














                                  SURVEY CONTROL DATA
                                
                             STATE=MD
                             [MARCH 20, 2026 21:46]
                    PROGRAM = datasheet95, VERSION = 8.12.5.20
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN9928 ***********************************************************************
 DN9928  DESIGNATION -  01 ANNEX
 DN9928  PID         -  DN9928
 DN9928  STATE/COUNTY-  MD/PRINCE GEORGES
 DN9928  COUNTRY     -  US
 DN9928  USGS QUAD   -  BOWIE (2016)
 DN9928
 DN9928                         *CURRENT SURVEY CONTROL
 DN9928  ______________________________________________________________________
 DN9928* NAD 83(1986) POSITION- 38 57 12.6    (N) 076 43 02.1    (W)   HD_HELD2
 DN9928* NAVD 88 ORTHO HEIGHT -    38.545 (meters)      126.46  (feet) ADJUSTED
 DN9928  ______________________________________________________________________
 DN9928  GEOID HEIGHT    -        -32.779 (meters)                     GEOID18
 DN9928  DYNAMIC HEIGHT  -         38.524 (meters)      126.39  (feet) COMP
 DN9928  MODELED GRAVITY -    980,080.0   (mgal)                       NAVD 88
 DN9928
 DN9928  VERT ORDER      -  SECOND    CLASS I
 DN9928
 DN9928.The horizontal coordinates were established by autonomous hand held GPS
 DN9928.observations and have an estimated accuracy of +/- 10 meters.
 DN9928
 DN9928.The orthometric height was determined by differential leveling and
 DN9928.adjusted by the NATIONAL GEODETIC SURVEY
 DN9928.in November 2012.
 DN9928
 DN9928.No vertical observational check was made to the station.
 DN9928
 DN9928.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN9928.GEOID18 height accuracy estimate available here.
 DN9928
 DN9928.Click photographs - Photos may exist for this station.
 DN9928
 DN9928.The dynamic height is computed by dividing the NAVD 88
 DN9928.geopotential number by the normal gravity value computed on the
 DN9928.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN9928.degrees latitude (g = 980.6199 gals.).
 DN9928
 DN9928.The modeled gravity was interpolated from observed gravity values.
 DN9928
 DN9928;                    North         East    Units  Estimated Accuracy
 DN9928;SPC MD       -   142,882.      424,508.      MT  (+/- 10 meters HH2 GPS)
 DN9928
 DN9928_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5119813018(NAD 83)
 DN9928
 DN9928                          SUPERSEDED SURVEY CONTROL
 DN9928
 DN9928.No superseded survey control is available for this station.
 DN9928
 DN9928_MARKER: DD = SURVEY DISK
 DN9928_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN9928_STAMPING: VIKA INC. 1998 01 ANNEX
 DN9928_MARK LOGO: VIKA
 DN9928_PROJECTION: FLUSH
 DN9928_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN9928+STABILITY: SURFACE MOTION
 DN9928
 DN9928  HISTORY     - Date     Condition        Report By
 DN9928  HISTORY     - 1998     MONUMENTED       NONE
 DN9928  HISTORY     - 20120628 GOOD             MDSHA
 DN9928
 DN9928                          STATION DESCRIPTION
 DN9928
 DN9928'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2012 (DCS)
 DN9928'THE MARK IS LOCATED ABOUT 9.1 MI (14.6 KM) WEST-NORTHWEST OF SOUTH
 DN9928'RIVER, 9.0 MI (14.5 KM) SOUTH OF ODENTON AND 7.9 MI (12.7 KM) EAST OF
 DN9928'LANHAM.  OWNERSHIP--MARYLAND STATE HIGHWAY ADMINISTRATION.
 DN9928'
 DN9928'TO REACH FROM THE INTERSECTION OF U.S. ROUTE 301 NORTHBOUND AND
 DN9928'GOVERNORS BRIDGE ROAD PROCEED NORTH 0.34 MI (0.5 KM) TO THE MARK ON
 DN9928'THE LEFT.
 DN9928'
 DN9928'IT IS 24 FT (7.3 M) NORTH OF THE NORTHWEST CORNER OF A DROP INLET,
 DN9928'40.3 FT (12.3 M) WEST OF THE CENTERLINE OF THE NORTHBOUND LANES OF US
 DN9928'301, 124.5 FT (37.9 M) SOUTH OF THE SOUTH EDGE OF THE CONCRETE PIER OF
 DN9928'THE US 50 EXIT RAMP TO NORTHBOUND US 301, 39.1 FT (11.9 M) EAST OF THE
 DN9928'CENTERLINE OF US 301 SOUTHBOUND LANES, 4.0 FT (1.2 M) EAST OF A
 DN9928'CARSONITE WITNESS POST.
 DN9928'
 DN9928'NOTE-IT IS A 2 INCH (5 CM) COPPER DISK SET IN A 4-IN (10 CM) SQUARE
 DN9928'CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP4252 ***********************************************************************
 DP4252  DESIGNATION -  024
 DP4252  PID         -  DP4252
 DP4252  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP4252  COUNTRY     -  US
 DP4252  USGS QUAD   -  SOUTH RIVER (2016)
 DP4252
 DP4252                         *CURRENT SURVEY CONTROL
 DP4252  ______________________________________________________________________
 DP4252* NAD 83(1986) POSITION- 38 53 25.81   (N) 076 33 42.98   (W)   HD_HELD1
 DP4252* NAVD 88 ORTHO HEIGHT -     6.914 (meters)       22.68  (feet) ADJUSTED
 DP4252  ______________________________________________________________________
 DP4252  GEOID HEIGHT    -        -33.331 (meters)                     GEOID18
 DP4252  DYNAMIC HEIGHT  -          6.910 (meters)       22.67  (feet) COMP
 DP4252  MODELED GRAVITY -    980,063.1   (mgal)                       NAVD 88
 DP4252
 DP4252  VERT ORDER      -  FIRST     CLASS II
 DP4252
 DP4252.The horizontal coordinates were determined by differentially corrected
 DP4252.hand held GPS observations or other comparable positioning techniques
 DP4252.and have an estimated accuracy of +/- 3 meters.
 DP4252
 DP4252.The orthometric height was determined by differential leveling and
 DP4252.adjusted by the NATIONAL GEODETIC SURVEY
 DP4252.in November 2014.
 DP4252
 DP4252.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP4252.GEOID18 height accuracy estimate available here.
 DP4252
 DP4252.Click photographs - Photos may exist for this station.
 DP4252
 DP4252.The dynamic height is computed by dividing the NAVD 88
 DP4252.geopotential number by the normal gravity value computed on the
 DP4252.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP4252.degrees latitude (g = 980.6199 gals.).
 DP4252
 DP4252.The modeled gravity was interpolated from observed gravity values.
 DP4252
 DP4252;                    North         East    Units  Estimated Accuracy
 DP4252;SPC MD       -   135,942.2     438,004.0     MT  (+/- 3 meters HH1 GPS) 
 DP4252
 DP4252_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6453705785(NAD 83)
 DP4252
 DP4252                          SUPERSEDED SURVEY CONTROL
 DP4252
 DP4252  NAVD 88 (11/04/14)    7.005  (m)           22.98   (f) SUPERSEDED  1 2
 DP4252  NAVD 88 (08/27/14)    7.005  (m)           22.98   (f) SUPERSEDED  1 2
 DP4252
 DP4252.Superseded values are not recommended for survey control.
 DP4252
 DP4252.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DP4252.See file dsdata.pdf to determine how the superseded data were derived.
 DP4252
 DP4252_MARKER: DD = SURVEY DISK
 DP4252_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DP4252_STAMPING: 024
 DP4252_MARK LOGO: SMENRC
 DP4252_PROJECTION: FLUSH
 DP4252_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DP4252+STABILITY: SURFACE MOTION
 DP4252_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP4252+SATELLITE: SATELLITE OBSERVATIONS - June 24, 2014
 DP4252
 DP4252  HISTORY     - Date     Condition        Report By
 DP4252  HISTORY     - 2008     MONUMENTED       SMENRC
 DP4252  HISTORY     - 20140624 GOOD             NGS
 DP4252
 DP4252                          STATION DESCRIPTION
 DP4252
 DP4252'DESCRIBED BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 DP4252'THE STATION IS LOCATED ABOUT 12.7 KM (7.9 MI) NORTH OF DEALE, 11.4 KM
 DP4252'(7.1 MI) SOUTH-SOUTHWEST OF ANNAPOLIS AND 1.4 KM (0.9 MI) SOUTH OF
 DP4252'SOUTH RIVER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DP4252'
 DP4252'NOTE-MUST CONTACT THE SECURITY DEPARTMENT AT THE SMITHSONIAN
 DP4252'ENVIRONMENTAL RESEARCH CENTER (SERC) AT 443-482-2298 FOR PERMISSION TO
 DP4252'ENTER THIS FEDERAL PROPERTY.
 DP4252'
 DP4252'TO REACH FROM THE INTERSECTION OF MD-214 (CENTRAL AVE) AND MD-468
 DP4252'(MUDDY CREEK ROAD), GO 1.4 MI (2.3 KM) SOUTH ALONG OLD MUDDY CREEK
 DP4252'ROAD, ON YOUR LEFT, THENCE 0.5 MI (0.8 KM) ON OLD MUDDY CREEK ROAD TO
 DP4252'A T-JUNCTION ROAD RIGHT AND STATION TO YOUR RIGHT.  THE STATION IN ON
 DP4252'THE LEFT, IN THE TOP OF A 12-CM (5 INCH) ROUND CONCRETE POST.
 DP4252'
 DP4252'IT IS 16.00 M (52.5 FT) SOUTH OF THE CENTERLINE OF THE ROAD, 10.00 M
 DP4252'(32.8 FT) WEST OF 2.09 M (6.9 FT) CIRCUMFERENCE MAPLE TREE, 3.40 M
 DP4252'(11.2 FT) EAST OF THE CENTERLINE OF THE ROAD AND 0.4 FT (12 CM)
 DP4252'NORTHWEST OF A ORANGE CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP4259 ***********************************************************************
 DP4259  DESIGNATION -  028
 DP4259  PID         -  DP4259
 DP4259  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP4259  COUNTRY     -  US
 DP4259  USGS QUAD   -  SOUTH RIVER (2016)
 DP4259
 DP4259                         *CURRENT SURVEY CONTROL
 DP4259  ______________________________________________________________________
 DP4259* NAD 83(2011) POSITION- 38 53 10.01287(N) 076 32 30.87980(W)   ADJUSTED
 DP4259* NAD 83(2011) ELLIP HT-   -32.157 (meters)        (01/30/26)   ADJUSTED
 DP4259* NAD 83(2011) EPOCH   -  2010.00
 DP4259* NAVD 88 ORTHO HEIGHT -     1.219 (meters)        4.00  (feet) ADJUSTED
 DP4259  ______________________________________________________________________
 DP4259  GEOID HEIGHT    -        -33.385 (meters)                     GEOID18
 DP4259  NAD 83(2011) X  -  1,156,978.792 (meters)                     COMP
 DP4259  NAD 83(2011) Y  - -4,834,740.580 (meters)                     COMP
 DP4259  NAD 83(2011) Z  -  3,982,463.549 (meters)                     COMP
 DP4259  LAPLACE CORR    -         -4.31  (seconds)                    DEFLEC18
 DP4259  DYNAMIC HEIGHT  -          1.219 (meters)        4.00  (feet) COMP
 DP4259  MODELED GRAVITY -    980,062.6   (mgal)                       NAVD 88
 DP4259
 DP4259  VERT ORDER      -  FIRST     CLASS II
 DP4259
 DP4259  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP4259  Standards:
 DP4259         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP4259            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP4259  -------------------------------------------------------------------
 DP4259  NETWORK    0.63   1.53           0.28   0.23   0.78     -0.22480587
 DP4259  -------------------------------------------------------------------
 DP4259  Click here for local accuracies and other accuracy information.
 DP4259
 DP4259.The horizontal coordinates were established by GPS observations
 DP4259.and adjusted by the MD DOT HIGHWAY ADMIN in January 2026.
 DP4259
 DP4259.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DP4259.frame has been affixed to the stable North American tectonic plate 
 DP4259
 DP4259.The horizontal coordinates are valid at the epoch date displayed above
 DP4259.which is a decimal equivalence of Year/Month/Day.
 DP4259
 DP4259.The orthometric height was determined by differential leveling and
 DP4259.adjusted by the NATIONAL GEODETIC SURVEY
 DP4259.in November 2014.
 DP4259
 DP4259.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP4259.GEOID18 height accuracy estimate available here.
 DP4259
 DP4259.Click photographs - Photos may exist for this station.
 DP4259
 DP4259.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP4259
 DP4259.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP4259
 DP4259.The ellipsoidal height was determined by GPS observations
 DP4259.and is referenced to NAD 83.
 DP4259
 DP4259.The dynamic height is computed by dividing the NAVD 88
 DP4259.geopotential number by the normal gravity value computed on the
 DP4259.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP4259.degrees latitude (g = 980.6199 gals.).
 DP4259
 DP4259.The modeled gravity was interpolated from observed gravity values.
 DP4259
 DP4259. The following values were computed from the NAD 83(2011) position.
 DP4259
 DP4259;                    North         East     Units Scale Factor Converg.
 DP4259;SPC MD       -   135,463.641   439,743.973   MT  0.99994986   +0 17 15.0
 DP4259;SPC MD       -   444,433.63  1,442,726.68   sFT  0.99994986   +0 17 15.0
 DP4259;UTM  18      - 4,305,268.555   366,265.990   MT  0.99982023   -0 58 05.2
 DP4259
 DP4259!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP4259!SPC MD       -   1.00000505  x   0.99994986  =   0.99995491
 DP4259!UTM  18      -   1.00000505  x   0.99982023  =   0.99982527
 DP4259
 DP4259_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6626505268(NAD 83)
 DP4259
 DP4259                          SUPERSEDED SURVEY CONTROL
 DP4259
 DP4259  NAVD 88 (11/04/14)    1.310  (m)            4.30   (f) SUPERSEDED  1 2
 DP4259  NAVD 88 (08/27/14)    1.310  (m)            4.30   (f) SUPERSEDED  1 2
 DP4259
 DP4259.Superseded values are not recommended for survey control.
 DP4259
 DP4259.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DP4259.See file dsdata.pdf to determine how the superseded data were derived.
 DP4259
 DP4259_MARKER: DD = SURVEY DISK
 DP4259_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 DP4259_SP_SET: PIER FOOTER
 DP4259_STAMPING: 028
 DP4259_MARK LOGO: SMENRC
 DP4259_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP4259_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP4259_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP4259+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2025
 DP4259
 DP4259  HISTORY     - Date     Condition        Report By
 DP4259  HISTORY     - 2008     MONUMENTED       SMENRC
 DP4259  HISTORY     - 20140618 GOOD             NGS
 DP4259  HISTORY     - 20180626 GOOD             MDDNR
 DP4259  HISTORY     - 20250320 GOOD             MDSHA
 DP4259
 DP4259                          STATION DESCRIPTION
 DP4259
 DP4259'DESCRIBED BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 DP4259'THE STATION IS LOCATED ABOUT 12.2 KM (7.6 MI) NORTH OF DEALE, 11.1 KM
 DP4259'(6.9 MI) SOUTH-SOUTHWEST OF ANNAPOLIS AND 2.5 KM (1.6 MI) SOUTHEAST OF
 DP4259'SOUTH RIVER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DP4259'
 DP4259'NOTE-MUST CONTACT THE SECURITY DEPARTMENT AT THE SMITHSONIAN
 DP4259'ENVIRONMENTAL RESEARCH CENTER (SERC) AT 443-482-2298 FOR PERMISSION TO
 DP4259'ENTER THIS FEDERAL PROPERTY.
 DP4259'
 DP4259'TO REACH FROM THE INTERSECTION OF MD-214 (CENTRAL AVE) AND MD-468
 DP4259'(MUDDY CREEK ROAD), GO 1.0 MI (1.6 KM) SOUTH ALONG MD-468 TO CONTEES
 DP4259'WHARF ROAD, ON YOUR LEFT, THENCE 1.1 MI (1.8 KM) EAST ON CONTEES WHARF
 DP4259'ROAD TO SERC PROPERTY.  TURN LEFT, HEADING TOWARD THE REED EDUCATION
 DP4259'CENTER FOR 0.5 MI (0.8 KM) TO STATION SET IN THE CONCRETE FOOTER FOR
 DP4259'THE SMITHSONIAN PIER.
 DP4259'
 DP4259'IT IS 18.86 M (61.9 FT) SOUTHEAST OF 2.34 M (7.7 FT) CIRCUMFERENCE BOX
 DP4259'ELDER TREE, 5.97 M (19.6 FT) EAST OF HITCHING POST AND 1.94 M (6.4 FT)
 DP4259'WEST OF A WATER VALVE - CROCKER FIRE DEPARTMENT.
 DP4259
 DP4259                          STATION RECOVERY (2018)
 DP4259
 DP4259'RECOVERY NOTE BY MD DEPT OF NAT RES 2018 (LCW)
 DP4259'RECOVERED SMITHSONIAN ENVIRONMENTAL RESEARCH CENTER DISC PROJECTING
 DP4259'ABOUT 1 CM (0.5 INCH) ABOVE A CONCRETE PAD NORTH OF THE CONCRETE
 DP4259'RETAINING WALL AT THE SHORE END OF THE PIER AT THE FACILITY.  IT IS
 DP4259'SET IN THE NORTHEAST CORNER OF THE CONCRETE PAD, 1.27 M (4.2 FT)
 DP4259'WEST-SOUTHWEST OF THE EAST FACE OF A RETAINING WALL, 3.77 M (12.4 FT)
 DP4259'NORTH-NORTHEAST OF THE INTERSECTION OF THE EAST SIDE OF THE PIER AND
 DP4259'THE SOUTH SIDE OF THE RETAINING WALL, 22.63 M (74.2 FT)
 DP4259'SOUTH-SOUTHWEST OF THE SOUTHEAST CORNER OF A CONCRETE TANK SUPPORT
 DP4259'SLAB AT BUILDING 220, 1.85 M (6.1 FT) SOUTHWEST OF A CHROME SIAMESE
 DP4259'FIRE STANDPIPE AND 1.43 M (4.7 FT) SOUTHWEST OF THE NORTHEAST CORNER
 DP4259'OF THE RETAINING WALL.
 DP4259
 DP4259                          STATION RECOVERY (2025)
 DP4259
 DP4259'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DP4259'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8516 ***********************************************************************
 AI8516  DESIGNATION -  02FA
 AI8516  PID         -  AI8516
 AI8516  STATE/COUNTY-  MD/HOWARD
 AI8516  COUNTRY     -  US
 AI8516  USGS QUAD   -  WOODBINE (2016)
 AI8516
 AI8516                         *CURRENT SURVEY CONTROL
 AI8516  ______________________________________________________________________
 AI8516* NAD 83(2011) POSITION- 39 21 53.44081(N) 077 06 04.04566(W)   ADJUSTED
 AI8516* NAD 83(2011) ELLIP HT-   187.848 (meters)        (06/27/12)   ADJUSTED
 AI8516* NAD 83(2011) EPOCH   -  2010.00
 AI8516* NAVD 88 ORTHO HEIGHT -   219.7   (meters)      721.    (feet) GPS OBS
 AI8516  ______________________________________________________________________
 AI8516  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8516  GEOID HEIGHT    -        -31.884 (meters)                     GEOID99
 AI8516  GEOID HEIGHT    -        -31.886 (meters)                     GEOID18
 AI8516  NAD 83(2011) X  -  1,102,288.344 (meters)                     COMP
 AI8516  NAD 83(2011) Y  - -4,813,277.472 (meters)                     COMP
 AI8516  NAD 83(2011) Z  -  4,023,832.842 (meters)                     COMP
 AI8516  LAPLACE CORR    -          0.56  (seconds)                    DEFLEC18
 AI8516
 AI8516  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8516  Standards:
 AI8516         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8516            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8516  -------------------------------------------------------------------
 AI8516  NETWORK    1.34   1.61           0.61   0.46   0.82     -0.05591241
 AI8516  -------------------------------------------------------------------
 AI8516  Click here for local accuracies and other accuracy information.
 AI8516
 AI8516.The horizontal coordinates were established by GPS observations
 AI8516.and adjusted by the National Geodetic Survey in June 2012.
 AI8516
 AI8516.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8516.been affixed to the stable North American tectonic plate. See 
 AI8516.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8516
 AI8516.The horizontal coordinates are valid at the epoch date displayed above
 AI8516.which is a decimal equivalence of Year/Month/Day.
 AI8516
 AI8516.The orthometric height was determined by GPS observations and a
 AI8516.high-resolution geoid model.
 AI8516
 AI8516.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8516.GEOID18 height accuracy estimate available here.
 AI8516
 AI8516.Click photographs - Photos may exist for this station.
 AI8516
 AI8516.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8516
 AI8516.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8516
 AI8516.The ellipsoidal height was determined by GPS observations
 AI8516.and is referenced to NAD 83.
 AI8516
 AI8516. The following values were computed from the NAD 83(2011) position.
 AI8516
 AI8516;                    North         East     Units Scale Factor Converg.
 AI8516;SPC MD       -   188,514.328   391,285.297   MT  0.99998621   -0 03 48.5
 AI8516;SPC MD       -   618,484.09  1,283,741.85   sFT  0.99998621   -0 03 48.5
 AI8516;UTM  18      - 4,359,370.649   318,990.053   MT  1.00000343   -1 19 58.8
 AI8516
 AI8516!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8516!SPC MD       -   0.99997053  x   0.99998621  =   0.99995674
 AI8516!UTM  18      -   0.99997053  x   1.00000343  =   0.99997396
 AI8516
 AI8516_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1899059370(NAD 83)
 AI8516
 AI8516                          SUPERSEDED SURVEY CONTROL
 AI8516
 AI8516  NAD 83(2007)-  39 21 53.44082(N)    077 06 04.04621(W) AD(2002.00) 0
 AI8516  ELLIP H (02/10/07)  187.878  (m)                       GP(2002.00)    
 AI8516  ELLIP H (08/30/02)  187.881  (m)                       GP(       ) 4 2
 AI8516  NAD 83(1991)-  39 21 53.44054(N)    077 06 04.04628(W) AD(       ) 1
 AI8516  ELLIP H (11/16/00)  187.760  (m)                       GP(       ) 4 1
 AI8516
 AI8516.Superseded values are not recommended for survey control.
 AI8516
 AI8516.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8516.See file dsdata.pdf to determine how the superseded data were derived.
 AI8516
 AI8516_MARKER: DD = SURVEY DISK
 AI8516_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8516_STAMPING: 02FA
 AI8516_MARK LOGO: MD-027
 AI8516_PROJECTION: FLUSH
 AI8516_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8516_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8516+STABILITY: SURFACE MOTION
 AI8516_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8516+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2022
 AI8516
 AI8516  HISTORY     - Date     Condition        Report By
 AI8516  HISTORY     - 1997     MONUMENTED       MD-027
 AI8516  HISTORY     - 20000915 GOOD             MD-027
 AI8516  HISTORY     - 20220915 GOOD             MDSHA
 AI8516
 AI8516                          STATION DESCRIPTION
 AI8516
 AI8516'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8516'DESCRIPTION BY HOWARD COUNTY 2000.  THE STATION IS LOCATED SOUTH
 AI8516'OF WATERSVILLE , ABOUT 3  MILES EAST OF MOUNT AIRY.  TO REACH THE
 AI8516'STATION FROM  THE BALTIMORE OHIO  RAILROAD STATION AT
 AI8516'WATERSVILLE   GO   SOUTHEAST  0.3 MILES  ALONG WATERSVILLE ROAD,
 AI8516'THE MARK IS ON   THE   WEST SIDE OF WATERSVILLE ROAD, ACOSS THE
 AI8516'STREET FROM THE     ENTRANCE TO NUMBER 309 WATERSVILE ROAD, 21.8
 AI8516'FEET WEST OF THE     CENTERLINE OF ROAD, 52.3 FEET TO POLE C AND P 133
 AI8516'1/2 ACROSS THE STREET,     19.5 FEET SOUTH OF POLE P AND E 22201 AND
 AI8516'11.2 FEET FROM THE EDGE   OF THE   ROAD.  THE STATION IS A STANDARD
 AI8516'HOWARD COUNTY SURVEY   DISC SET   ON CONCRETE BASE, FLUSH WITH
 AI8516'THE GROUND.
 AI8516'
 AI8516
 AI8516                          STATION RECOVERY (2022)
 AI8516
 AI8516'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 AI8516'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP4255 ***********************************************************************
 DP4255  DESIGNATION -  049
 DP4255  PID         -  DP4255
 DP4255  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP4255  COUNTRY     -  US
 DP4255  USGS QUAD   -  SOUTH RIVER (2016)
 DP4255
 DP4255                         *CURRENT SURVEY CONTROL
 DP4255  ______________________________________________________________________
 DP4255* NAD 83(1986) POSITION- 38 53 16.64   (N) 076 33 13.31   (W)   HD_HELD1
 DP4255* NAVD 88 ORTHO HEIGHT -    13.613 (meters)       44.66  (feet) ADJUSTED
 DP4255  ______________________________________________________________________
 DP4255  GEOID HEIGHT    -        -33.355 (meters)                     GEOID18
 DP4255  DYNAMIC HEIGHT  -         13.605 (meters)       44.64  (feet) COMP
 DP4255  MODELED GRAVITY -    980,062.8   (mgal)                       NAVD 88
 DP4255
 DP4255  VERT ORDER      -  FIRST     CLASS II
 DP4255
 DP4255.The horizontal coordinates were determined by differentially corrected
 DP4255.hand held GPS observations or other comparable positioning techniques
 DP4255.and have an estimated accuracy of +/- 3 meters.
 DP4255
 DP4255.The orthometric height was determined by differential leveling and
 DP4255.adjusted by the NATIONAL GEODETIC SURVEY
 DP4255.in November 2014.
 DP4255
 DP4255.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP4255.GEOID18 height accuracy estimate available here.
 DP4255
 DP4255.Click photographs - Photos may exist for this station.
 DP4255
 DP4255.The dynamic height is computed by dividing the NAVD 88
 DP4255.geopotential number by the normal gravity value computed on the
 DP4255.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP4255.degrees latitude (g = 980.6199 gals.).
 DP4255
 DP4255.The modeled gravity was interpolated from observed gravity values.
 DP4255
 DP4255;                    North         East    Units  Estimated Accuracy
 DP4255;SPC MD       -   135,662.9     438,720.4     MT  (+/- 3 meters HH1 GPS) 
 DP4255
 DP4255_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6524705490(NAD 83)
 DP4255
 DP4255                          SUPERSEDED SURVEY CONTROL
 DP4255
 DP4255  NAVD 88 (11/04/14)   13.703  (m)           44.96   (f) SUPERSEDED  1 2
 DP4255  NAVD 88 (08/27/14)   13.703  (m)           44.96   (f) SUPERSEDED  1 2
 DP4255
 DP4255.Superseded values are not recommended for survey control.
 DP4255
 DP4255.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DP4255.See file dsdata.pdf to determine how the superseded data were derived.
 DP4255
 DP4255_MARKER: DD = SURVEY DISK
 DP4255_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DP4255_SP_SET: PORCH
 DP4255_STAMPING: 049
 DP4255_MARK LOGO: SMENRC
 DP4255_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP4255_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DP4255_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP4255+SATELLITE: SATELLITE OBSERVATIONS - June 22, 2014
 DP4255
 DP4255  HISTORY     - Date     Condition        Report By
 DP4255  HISTORY     - 2008     MONUMENTED       SMENRC
 DP4255  HISTORY     - 20140622 GOOD             NGS
 DP4255
 DP4255                          STATION DESCRIPTION
 DP4255
 DP4255'DESCRIBED BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 DP4255'THE STATION IS LOCATED ABOUT 12.4 KM (7.7 MI) NORTH OF DEALE, 11.3 KM
 DP4255'(7.0 MI) SOUTH-SOUTHWEST OF ANNAPOLIS AND 1.8 KM (1.1 MI)
 DP4255'SOUTH-SOUTHEAST OF SOUTH RIVER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DP4255'
 DP4255'NOTE-MUST CONTACT THE SECURITY DEPARTMENT AT THE SMITHSONIAN
 DP4255'ENVIRONMENTAL RESEARCH CENTER (SERC) AT 443-482-2298 FOR PERMISSION TO
 DP4255'ENTER THIS FEDERAL PROPERTY.
 DP4255'
 DP4255'TO REACH FROM THE INTERSECTION OF MD-214 (CENTRAL AVE) AND MD-468
 DP4255'(MUDDY CREEK ROAD), GO 1.0 MI (1.6 KM) SOUTH ALONG MD-468 TO CONTEES
 DP4255'WHARF ROAD, ON YOUR LEFT, THENCE 1.1 MI (1.8 KM) ON CONTEES WHARF ROAD
 DP4255'TO SERC PROPERTY.  CONTINUE TOWARD THE CHARLES MATHIAS LABORATORY.
 DP4255'THE MARK IS SET IN THE SOUTHEAST PORCH ON SERC BUILDING 145 (NEW
 DP4255'DOMINION ADMINISTRATION BUILDING).
 DP4255'
 DP4255'IT IS 14.71 M (48.3 FT) EAST OF THE NORTHEAST BRINK CORNER OF MATHIAS
 DP4255'LABORATORY, 12.00 M (39.4 FT) SOUTH OF A FIRE HYDRANT - AMERICAN VALVE
 DP4255'AND HYDRANT AND 9.41 M (30.9 FT) NORTH OF A FIRE HYDRANT - MUELLER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6589 ***********************************************************************
 DL6589  DESIGNATION -  06EA
 DL6589  PID         -  DL6589
 DL6589  STATE/COUNTY-  MD/HOWARD
 DL6589  COUNTRY     -  US
 DL6589  USGS QUAD   -  DAMASCUS (2016)
 DL6589
 DL6589                         *CURRENT SURVEY CONTROL
 DL6589  ______________________________________________________________________
 DL6589* NAD 83(1986) POSITION- 39 19 46.49   (N) 077 09 26.44   (W)   HD_HELD1
 DL6589* NAVD 88 ORTHO HEIGHT -   239.373 (meters)      785.34  (feet) ADJUSTED
 DL6589  ______________________________________________________________________
 DL6589  GEOID HEIGHT    -        -31.864 (meters)                     GEOID18
 DL6589  DYNAMIC HEIGHT  -        239.248 (meters)      784.93  (feet) COMP
 DL6589  MODELED GRAVITY -    980,095.8   (mgal)                       NAVD 88
 DL6589
 DL6589  VERT ORDER      -  SECOND    CLASS I
 DL6589
 DL6589.The horizontal coordinates were determined by differentially corrected
 DL6589.hand held GPS observations or other comparable positioning techniques
 DL6589.and have an estimated accuracy of +/- 3 meters.
 DL6589
 DL6589.The orthometric height was determined by differential leveling and
 DL6589.adjusted by the NATIONAL GEODETIC SURVEY
 DL6589.in March 2010.
 DL6589
 DL6589.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6589.GEOID18 height accuracy estimate available here.
 DL6589
 DL6589.Click photographs - Photos may exist for this station.
 DL6589
 DL6589.The dynamic height is computed by dividing the NAVD 88
 DL6589.geopotential number by the normal gravity value computed on the
 DL6589.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6589.degrees latitude (g = 980.6199 gals.).
 DL6589
 DL6589.The modeled gravity was interpolated from observed gravity values.
 DL6589
 DL6589;                    North         East    Units  Estimated Accuracy
 DL6589;SPC MD       -   184,606.2     386,433.5     MT  (+/- 3 meters HH1 GPS) 
 DL6589
 DL6589_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1405255570(NAD 83)
 DL6589
 DL6589                          SUPERSEDED SURVEY CONTROL
 DL6589
 DL6589.No superseded survey control is available for this station.
 DL6589
 DL6589_MARKER: DD = SURVEY DISK
 DL6589_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6589_STAMPING: 06EA
 DL6589_MARK LOGO: MD-027
 DL6589_PROJECTION: FLUSH
 DL6589_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6589_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6589+STABILITY: SURFACE MOTION
 DL6589
 DL6589  HISTORY     - Date     Condition        Report By
 DL6589  HISTORY     - 1998     MONUMENTED       MD-027
 DL6589  HISTORY     - 20070530 GOOD             MDSHA
 DL6589
 DL6589                          STATION DESCRIPTION
 DL6589
 DL6589'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6589'THE STATION IS LOCATED ABOUT 3.3 MI (5.3 KM) SOUTH OF MOUNT AIRY, 2.6
 DL6589'MI (4.2 KM) NORTHEAST OF FRIENDSHIP AND 2.3 MI (3.7 KM) EAST-NORTHEAST
 DL6589'OF CLAGGETTSVILLE AT THE INTERSECTION OF WINDSOR FOREST DRIVE AND LONG
 DL6589'CHURCH ROAD.
 DL6589'
 DL6589'IT IS 19.3 FT (5.9 M) WEST OF THE CENTERLINE OF LONG CORNER ROAD, 30.7
 DL6589'FT (9.4 M) SOUTH OF THE CENTERLINE OF WINDSOR FOREST ROAD, 21.0 FT
 DL6589'(6.4 M) SOUTHEAST OF C AND P POLE NUMBER 23, 38.0 FT (11.6 M)
 DL6589'WEST-SOUTHWEST OF A POWER POLE, 11.5 FT (3.5 M) SOUTH OF A STREET SIGN
 DL6589'AND SET IN THE TOP OF AN 8-IN (20 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8500 ***********************************************************************
 AI8500  DESIGNATION -  06HA
 AI8500  PID         -  AI8500
 AI8500  STATE/COUNTY-  MD/HOWARD
 AI8500  COUNTRY     -  US
 AI8500  USGS QUAD   -  DAMASCUS (2016)
 AI8500
 AI8500                         *CURRENT SURVEY CONTROL
 AI8500  ______________________________________________________________________
 AI8500* NAD 83(2011) POSITION- 39 19 20.23014(N) 077 09 24.91796(W)   ADJUSTED
 AI8500* NAD 83(2011) ELLIP HT-   207.612 (meters)        (06/27/12)   ADJUSTED
 AI8500* NAD 83(2011) EPOCH   -  2010.00
 AI8500* NAVD 88 ORTHO HEIGHT -   239.5   (meters)      786.    (feet) GPS OBS
 AI8500  ______________________________________________________________________
 AI8500  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8500  GEOID HEIGHT    -        -31.850 (meters)                     GEOID99
 AI8500  GEOID HEIGHT    -        -31.856 (meters)                     GEOID18
 AI8500  NAD 83(2011) X  -  1,098,269.636 (meters)                     COMP
 AI8500  NAD 83(2011) Y  - -4,817,284.176 (meters)                     COMP
 AI8500  NAD 83(2011) Z  -  4,020,191.191 (meters)                     COMP
 AI8500  LAPLACE CORR    -          1.71  (seconds)                    DEFLEC18
 AI8500
 AI8500  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8500  Standards:
 AI8500         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8500            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8500  -------------------------------------------------------------------
 AI8500  NETWORK    1.34   1.57           0.61   0.46   0.80     -0.10229117
 AI8500  -------------------------------------------------------------------
 AI8500  Click here for local accuracies and other accuracy information.
 AI8500
 AI8500.The horizontal coordinates were established by GPS observations
 AI8500.and adjusted by the National Geodetic Survey in June 2012.
 AI8500
 AI8500.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8500.been affixed to the stable North American tectonic plate. See 
 AI8500.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8500
 AI8500.The horizontal coordinates are valid at the epoch date displayed above
 AI8500.which is a decimal equivalence of Year/Month/Day.
 AI8500
 AI8500.The orthometric height was determined by GPS observations and a
 AI8500.high-resolution geoid model.
 AI8500
 AI8500.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8500.GEOID18 height accuracy estimate available here.
 AI8500
 AI8500.Click photographs - Photos may exist for this station.
 AI8500
 AI8500.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8500
 AI8500.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8500
 AI8500.The ellipsoidal height was determined by GPS observations
 AI8500.and is referenced to NAD 83.
 AI8500
 AI8500. The following values were computed from the NAD 83(2011) position.
 AI8500
 AI8500;                    North         East     Units Scale Factor Converg.
 AI8500;SPC MD       -   183,796.277   386,468.600   MT  0.99998015   -0 05 54.6
 AI8500;SPC MD       -   603,004.95  1,267,939.07   sFT  0.99998015   -0 05 54.6
 AI8500;UTM  18      - 4,354,760.295   314,069.885   MT  1.00002566   -1 22 01.9
 AI8500
 AI8500!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8500!SPC MD       -   0.99996743  x   0.99998015  =   0.99994758
 AI8500!UTM  18      -   0.99996743  x   1.00002566  =   0.99999309
 AI8500
 AI8500_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1406954760(NAD 83)
 AI8500
 AI8500                          SUPERSEDED SURVEY CONTROL
 AI8500
 AI8500  NAD 83(2007)-  39 19 20.23025(N)    077 09 24.91852(W) AD(2002.00) 0
 AI8500  ELLIP H (02/10/07)  207.643  (m)                       GP(2002.00)    
 AI8500  ELLIP H (08/30/02)  207.641  (m)                       GP(       ) 4 2
 AI8500  NAD 83(1991)-  39 19 20.23016(N)    077 09 24.91865(W) AD(       ) 1
 AI8500  ELLIP H (11/16/00)  207.524  (m)                       GP(       ) 4 1
 AI8500
 AI8500.Superseded values are not recommended for survey control.
 AI8500
 AI8500.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8500.See file dsdata.pdf to determine how the superseded data were derived.
 AI8500
 AI8500_MARKER: DD = SURVEY DISK
 AI8500_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8500_STAMPING: 09/92 06HA
 AI8500_MARK LOGO: MD-027
 AI8500_PROJECTION: FLUSH
 AI8500_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8500_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8500+STABILITY: SURFACE MOTION
 AI8500_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8500+SATELLITE: SATELLITE OBSERVATIONS - July 22, 2016
 AI8500
 AI8500  HISTORY     - Date     Condition        Report By
 AI8500  HISTORY     - 1992     MONUMENTED       MD-027
 AI8500  HISTORY     - 20000915 GOOD             MD-027
 AI8500  HISTORY     - 20160722 GOOD             BASE9
 AI8500
 AI8500                          STATION DESCRIPTION
 AI8500
 AI8500'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8500'DESCRIPTION BY HOWARD COUNTY 2000    THE STATION IS LOCATED ABOUT
 AI8500'3 MILES NORTH OF DAMASCUS, 3 MILES  SOUTH OF MT. AIRY  AND 10.5
 AI8500'MILES   WSW OF SYKESVILLE.    TO REACH THE STATION FROM THE BRIDGE
 AI8500'OF  LONG  CORNER ROAD OVER  THE PATAPSCO RIVER GO NORTH ALONG
 AI8500'LONG   CORNER ROAD FOR ONE  MILE TO ONTERSECTION WITH NEW CUT
 AI8500'ROAD,   CONTINUE  NORTH 150 FEET  ALONG LONG CORNER ROAD TO THE
 AI8500'MARK ON   THE RIGHT.   THE STATION IS 3.8 FEET FROM THE EAST EDGE OF
 AI8500'ROAD OF   LONG CORNER  ROAD,  127.2 FEET NORTH OF SYSTEM POLE
 AI8500'NUMBER IE229   (25A),  52.2 FEET  TO A G AND E ELECTRIC BOX  ACROSS
 AI8500'THE
 AI8500'STREET AND 98 FEET   SOUTHEAST OF  C AND P POLE NUMBER 36 ACROSS
 AI8500'THE  STREET.    THE STATION   IS A STANDARD HOWARD COUNTY ALUMINUM
 AI8500'DISC  SET ON  CONCRETE   BASE. FLUSH WITH THE GROUND
 AI8500'
 AI8500
 AI8500                          STATION RECOVERY (2016)
 AI8500
 AI8500'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (RLS)
 AI8500'MARK IS 5.92 M (19.4 FT) WEST OF A BOARD FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8501 ***********************************************************************
 AI8501  DESIGNATION -  08FB
 AI8501  PID         -  AI8501
 AI8501  STATE/COUNTY-  MD/HOWARD
 AI8501  COUNTRY     -  US
 AI8501  USGS QUAD   -  WOODBINE (2016)
 AI8501
 AI8501                         *CURRENT SURVEY CONTROL
 AI8501  ______________________________________________________________________
 AI8501* NAD 83(2011) POSITION- 39 20 06.98207(N) 077 00 49.75148(W)   ADJUSTED
 AI8501* NAD 83(2011) ELLIP HT-   159.189 (meters)        (06/27/12)   ADJUSTED
 AI8501* NAD 83(2011) EPOCH   -  2010.00
 AI8501* NAVD 88 ORTHO HEIGHT -   191.1   (meters)      627.    (feet) GPS OBS
 AI8501  ______________________________________________________________________
 AI8501  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8501  GEOID HEIGHT    -        -31.877 (meters)                     GEOID99
 AI8501  GEOID HEIGHT    -        -31.890 (meters)                     GEOID18
 AI8501  NAD 83(2011) X  -  1,110,084.073 (meters)                     COMP
 AI8501  NAD 83(2011) Y  - -4,813,599.195 (meters)                     COMP
 AI8501  NAD 83(2011) Z  -  4,021,275.798 (meters)                     COMP
 AI8501  LAPLACE CORR    -         -1.64  (seconds)                    DEFLEC18
 AI8501
 AI8501  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8501  Standards:
 AI8501         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8501            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8501  -------------------------------------------------------------------
 AI8501  NETWORK    1.17   1.37           0.54   0.39   0.70     -0.14249739
 AI8501  -------------------------------------------------------------------
 AI8501  Click here for local accuracies and other accuracy information.
 AI8501
 AI8501.The horizontal coordinates were established by GPS observations
 AI8501.and adjusted by the National Geodetic Survey in June 2012.
 AI8501
 AI8501.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8501.been affixed to the stable North American tectonic plate. See 
 AI8501.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8501
 AI8501.The horizontal coordinates are valid at the epoch date displayed above
 AI8501.which is a decimal equivalence of Year/Month/Day.
 AI8501
 AI8501.The orthometric height was determined by GPS observations and a
 AI8501.high-resolution geoid model.
 AI8501
 AI8501.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8501.GEOID18 height accuracy estimate available here.
 AI8501
 AI8501.Click photographs - Photos may exist for this station.
 AI8501
 AI8501.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8501
 AI8501.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8501
 AI8501.The ellipsoidal height was determined by GPS observations
 AI8501.and is referenced to NAD 83.
 AI8501
 AI8501. The following values were computed from the NAD 83(2011) position.
 AI8501
 AI8501;                    North         East     Units Scale Factor Converg.
 AI8501;SPC MD       -   185,226.510   398,808.527   MT  0.99998194   -0 00 31.2
 AI8501;SPC MD       -   607,697.31  1,308,424.31   sFT  0.99998194   -0 00 31.2
 AI8501;UTM  18      - 4,355,917.038   326,438.658   MT  0.99997091   -1 16 36.5
 AI8501
 AI8501!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8501!SPC MD       -   0.99997503  x   0.99998194  =   0.99995697
 AI8501!UTM  18      -   0.99997503  x   0.99997091  =   0.99994594
 AI8501
 AI8501_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2643855917(NAD 83)
 AI8501
 AI8501                          SUPERSEDED SURVEY CONTROL
 AI8501
 AI8501  NAD 83(2007)-  39 20 06.98215(N)    077 00 49.75218(W) AD(2002.00) 0
 AI8501  ELLIP H (02/10/07)  159.216  (m)                       GP(2002.00)    
 AI8501  ELLIP H (08/30/02)  159.213  (m)                       GP(       ) 4 2
 AI8501  NAD 83(1991)-  39 20 06.98194(N)    077 00 49.75236(W) AD(       ) 1
 AI8501  ELLIP H (11/16/00)  159.107  (m)                       GP(       ) 4 1
 AI8501
 AI8501.Superseded values are not recommended for survey control.
 AI8501
 AI8501.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8501.See file dsdata.pdf to determine how the superseded data were derived.
 AI8501
 AI8501_MARKER: DD = SURVEY DISK
 AI8501_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8501_STAMPING: 08FB
 AI8501_MARK LOGO: MD-027
 AI8501_PROJECTION: FLUSH
 AI8501_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8501_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8501+STABILITY: SURFACE MOTION
 AI8501_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8501+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8501
 AI8501  HISTORY     - Date     Condition        Report By
 AI8501  HISTORY     - 1993     MONUMENTED       MD-027
 AI8501  HISTORY     - 20000915 GOOD             MD-027
 AI8501
 AI8501                          STATION DESCRIPTION
 AI8501
 AI8501'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8501'DESCRIPTION BY HOWARD COUNTY,  2000    THE STATION IS LOCATED
 AI8501'NORTH OF COOKSVILLE ABOUT 8 MILES EAST OF   MT.  AIRY AND   3MILES
 AI8501'SSW OF SYKESVILLE .     TO REACH THE STATION  FROM THE EAST
 AI8501'INTERSECTION OF  STATE   HIGHWAY 99 AND STATE HIGHWAY 97 , GO  255
 AI8501'FEET SOUTH ALONG   HIGHWAY 97 TO THE MARK ON THE LEFT (EAST).    THE
 AI8501'STATION IS AT THE  EDGE OF AN  EMPTY SITE ACROSS  THE STREET
 AI8501'FROM     HOUSES NUMBER  1276 AND 1320 OF SAID STATE HIGHWAY 97. IT IS
 AI8501'154.5    FEET EAST OF THE  CENTERLINE OF ROUTE 97, 83.4 FEET
 AI8501'NORTHWEST  OF    POLE G AND E 272936, 41.6  FEET TO A  165 INCHES
 AI8501'MAPLE
 AI8501'TREE AND 35.2  FEET    TO POLE C AND P 79 1/2   ACROSS THE STREET.
 AI8501'THE  STATION IS A  STANDARD   HOWARD COUNTY SURVEY DISC SET ON A
 AI8501'CONCRETE BASE ,  FLUSH WITH   THE  GROUND.
 AI8501'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0454 ***********************************************************************
 HV0454  DESIGNATION -  1
 HV0454  PID         -  HV0454
 HV0454  STATE/COUNTY-  MD/DORCHESTER
 HV0454  COUNTRY     -  US
 HV0454  USGS QUAD   -  HONGA (2016)
 HV0454
 HV0454                         *CURRENT SURVEY CONTROL
 HV0454  ______________________________________________________________________
 HV0454* NAD 83(1986) POSITION- 38 20 52.     (N) 076 13 39.     (W)   SCALED
 HV0454* NAVD 88 ORTHO HEIGHT -     1.026 (meters)        3.37  (feet) ADJUSTED
 HV0454  ______________________________________________________________________
 HV0454  GEOID HEIGHT    -        -35.072 (meters)                     GEOID18
 HV0454  DYNAMIC HEIGHT  -          1.026 (meters)        3.37  (feet) COMP
 HV0454  MODELED GRAVITY -    980,001.1   (mgal)                       NAVD 88
 HV0454
 HV0454  VERT ORDER      -  FIRST     CLASS II
 HV0454
 HV0454.The horizontal coordinates were scaled from a map and have
 HV0454.an estimated accuracy of +/- 6 seconds.
 HV0454
 HV0454.The orthometric height was determined by differential leveling and
 HV0454.adjusted by the NATIONAL GEODETIC SURVEY
 HV0454.in June 1991.
 HV0454
 HV0454.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0454.GEOID18 height accuracy estimate available here.
 HV0454
 HV0454.Click photographs - Photos may exist for this station.
 HV0454
 HV0454.The dynamic height is computed by dividing the NAVD 88
 HV0454.geopotential number by the normal gravity value computed on the
 HV0454.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0454.degrees latitude (g = 980.6199 gals.).
 HV0454
 HV0454.The modeled gravity was interpolated from observed gravity values.
 HV0454
 HV0454;                    North         East    Units  Estimated Accuracy
 HV0454;SPC MD       -    75,890.      467,530.      MT  (+/- 180 meters Scaled)
 HV0454
 HV0454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH927451(NAD 83)
 HV0454
 HV0454                          SUPERSEDED SURVEY CONTROL
 HV0454
 HV0454  NGVD 29 (11/26/84)    1.266  (m)            4.15   (f) ADJUSTED    1 2
 HV0454
 HV0454.Superseded values are not recommended for survey control.
 HV0454
 HV0454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0454.See file dsdata.pdf to determine how the superseded data were derived.
 HV0454
 HV0454_MARKER: DD = SURVEY DISK
 HV0454_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0454_MARK LOGO: USACE
 HV0454_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0454+STABILITY: SURFACE MOTION
 HV0454
 HV0454  HISTORY     - Date     Condition        Report By
 HV0454  HISTORY     - UNK      MONUMENTED       USACE
 HV0454  HISTORY     - 1971     GOOD             NGS
 HV0454  HISTORY     - 20060326 MARK NOT FOUND   USPSQD
 HV0454
 HV0454                          STATION DESCRIPTION
 HV0454
 HV0454'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0454'1.2 MI NW FROM FISHING CREEK.
 HV0454'ABOUT 1.2 MILES NORTHWEST ALONG HOOPER ISLAND ROAD FROM THE POST
 HV0454'OFFICE AT FISHING CREEK, ON UPPER HOOPER ISLAND, 10 FEET EAST
 HV0454'OF THE CENTER LINE OF THE ROAD, 28.1 FEET SOUTH OF THE SOUTHEAST
 HV0454'CORNER OF THE WOODEN BRIDGE OVER FISHING CREEK, 13.9 FEET NORTH
 HV0454'OF THE NORTHWEST CORNER OF THE CONCRETE FOUNDATION FOR THE DRAWBRIDGE
 HV0454'GATE, ABOUT LEVEL WITH THE ROAD, AND SET IN THE TOP OF A CONCRETE
 HV0454'POST PROJECTING 2 INCHES.  NOTE-- STATE HIGHWAY 335 ENDS AT THE
 HV0454'SOUTH END OF THE BRIDGE.
 HV0454
 HV0454                          STATION RECOVERY (2006)
 HV0454
 HV0454'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 HV0454'REFERENCED WOODEN BRIDGE DOES NOT EXIST.  ALL ABUTMENTS, FOUNDATIONS
 HV0454'AND BRIDGE ACCESS HAVE BEEN REMOVED.  ALL WERE REPLACED IN 1992 BY A
 HV0454'NEW, HIGH CONCRETE FIXED BRIDGE JUST WEST OF OLD BRIDGE LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7297 ***********************************************************************
 HV7297  DESIGNATION -  1
 HV7297  PID         -  HV7297
 HV7297  STATE/COUNTY-  MD/CALVERT
 HV7297  COUNTRY     -  US
 HV7297  USGS QUAD   -  NORTH BEACH (2016)
 HV7297
 HV7297                         *CURRENT SURVEY CONTROL
 HV7297  ______________________________________________________________________
 HV7297* NAD 83(1993) POSITION- 38 39 17.04892(N) 076 31 38.69575(W)   ADJUSTED
 HV7297* NAVD 88 ORTHO HEIGHT -    27.    (meters)       89.    (feet) SCALED
 HV7297  ______________________________________________________________________
 HV7297  GEOID HEIGHT    -        -33.776 (meters)                     GEOID18
 HV7297  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV7297  HORZ ORDER      -  SECOND
 HV7297
 HV7297.The horizontal coordinates were established by classical geodetic methods
 HV7297.and adjusted by the National Geodetic Survey in November 1994.
 HV7297
 HV7297.The orthometric height was scaled from a topographic map.
 HV7297
 HV7297.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7297.GEOID18 height accuracy estimate available here.
 HV7297
 HV7297.Click photographs - Photos may exist for this station.
 HV7297
 HV7297.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7297
 HV7297. The following values were computed from the NAD 83(1993) position.
 HV7297
 HV7297;                    North         East     Units Scale Factor Converg.
 HV7297;SPC MD       -   109,785.999   441,134.566   MT  0.99995725   +0 17 47.8
 HV7297;SPC MD       -   360,189.57  1,447,288.99   sFT  0.99995725   +0 17 47.8
 HV7297;UTM  18      - 4,279,570.068   367,094.545   MT  0.99981752   -0 57 15.1
 HV7297
 HV7297!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7297!SPC MD       -   1.00000110  x   0.99995725  =   0.99995835
 HV7297!UTM  18      -   1.00000110  x   0.99981752  =   0.99981862
 HV7297
 HV7297:                Primary Azimuth Mark                     Grid Az
 HV7297:SPC MD       -  SHARPS ISLAND LIGHTHOUSE                 097 09 07.6
 HV7297:UTM  18      -  SHARPS ISLAND LIGHTHOUSE                 098 24 10.5
 HV7297
 HV7297_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6709479570(NAD 83)
 HV7297
 HV7297|---------------------------------------------------------------------|
 HV7297| PID    Reference Object                     Distance      Geod. Az  |
 HV7297|                                                           dddmmss.s |
 HV7297| HV7259 BEACON D                            APPROX. 7.3 KM 0182824.8 |
 HV7297| HV7258 BEACON E                            APPROX. 5.4 KM 0242252.6 |
 HV7297| HV7256 BEACON 2                            APPROX. 3.5 KM 0285504.5 |
 HV7297| HV6142 SHARPS ISLAND LIGHTHOUSE            APPROX.13.3 KM 0972655.4 |
 HV7297| HV6144 BEACON F                            APPROX. 5.0 KM 1273803.9 |
 HV7297| HV7255 BEACON 3                            APPROX. 3.3 KM 1354513.0 |
 HV7297| HV7289 BM 8                                 68.452 METERS 25731     |
 HV7297| HV7267 BROWNE BASE SOUTH                    29.924 METERS 29259     |
 HV7297| HV7294 1 RM 1                               54.470 METERS 31401     |
 HV7297| HV7268 WAVE 1944                            36.259 METERS 31410     |
 HV7297| HV7292 6                                   337.322 METERS 34532     |
 HV7297| HV7284 TRAVERSE STAKE 12 1944              264.969 METERS 34532     |
 HV7297| HV7285 TRAVERSE STAKE 9 1944               175.774 METERS 34532     |
 HV7297| HV7266 TRAVERSE STAKE 7                    123.744 METERS 34533     |
 HV7297| HV7269 TRAVERSE STAKE 6 1944                93.752 METERS 34533     |
 HV7297| HV7291 TRAVERSE STAKE 15 1944              366.411 METERS 34533     |
 HV7297|---------------------------------------------------------------------|
 HV7297
 HV7297                          SUPERSEDED SURVEY CONTROL
 HV7297
 HV7297  NAD 83(1986)-  38 39 17.04668(N)    076 31 38.70945(W) AD(       ) 2
 HV7297  NAD 27      -  38 39 16.60700(N)    076 31 39.87100(W) AD(       ) 2
 HV7297
 HV7297.Superseded values are not recommended for survey control.
 HV7297
 HV7297.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7297.See file dsdata.pdf to determine how the superseded data were derived.
 HV7297
 HV7297_MARKER: DB = BENCH MARK DISK
 HV7297_SETTING: 0 = UNSPECIFIED SETTING
 HV7297_STAMPING: NO 1 1944
 HV7297_MARK LOGO: CGS
 HV7297
 HV7297  HISTORY     - Date     Condition        Report By
 HV7297  HISTORY     - 1944     MONUMENTED       CGS
 HV7297  HISTORY     - 1960     GOOD             CGS
 HV7297  HISTORY     - 1960     SEE DESCRIPTION  CGS
 HV7297
 HV7297                          STATION DESCRIPTION
 HV7297
 HV7297'DESCRIBED BY COAST AND GEODETIC SURVEY 1944 (TBR)
 HV7297'STATION IS A STANDARD BRONZE BENCH MARK STAMPED NO 1 1944.  IT IS
 HV7297'ON SE CORNER OF CONCRETE WINCH MOUNT FOR INCLINED RAILWAY AT NAVAL
 HV7297'RESEARCH LABORATORY, CHESAPEAKE BEACH.
 HV7297'
 HV7297'REFERENCE MARK 1 IS A STANDARD DISK SET IN TILE COPING ON E FACE
 HV7297'OF ROOF OF BUILDING 1, NAVAL RESEARCH LABORATORY, CHESAPEAKE BEACH.
 HV7297'
 HV7297'HALF-TIDE LEVEL (APPROXIMATE SEA LEVEL) ELEVATION 100.20 FEET.
 HV7297'
 HV7297'HEIGHT OF LIGHT ABOVE STATION MARK 1.5 METERS.
 HV7297
 HV7297                          STATION RECOVERY (1960)
 HV7297
 HV7297'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (WFD)
 HV7297'THE MARK WAS RECOVERED IN GOOD CONDITION.  THE DISTANCE TO WAVE
 HV7297'1944 WAS VERIFIED.  NO ATTEMPT WAS MADE TO MEASURE TO THE
 HV7297'REFERENCE MARK, WAVE NO. 1 1944, WHICH IS ON THE ROOF OF BUILDING
 HV7297'NO. 4.
 HV7297'
 HV7297'THIS MARK IS SCHEDULED TO BE DESTROYED BY NEW CONSTRUCTION, SO A
 HV7297'NEW STATION, BENCH MARK NO 8 1960, WAS ESTABLISHED NEARBY TO
 HV7297'PROVIDE CONTROL IN THIS AREA.
 HV7297
 HV7297                          STATION RECOVERY (1960)
 HV7297
 HV7297'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7297'STATION DESTROYED.  OFFICIALS AT THE NAVY BASE SAID STATION WAS
 HV7297'REMOVED DUE TO CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6319 ***********************************************************************
 DG6319  DESIGNATION -  1
 DG6319  PID         -  DG6319
 DG6319  STATE/COUNTY-  MD/TALBOT
 DG6319  COUNTRY     -  US
 DG6319  USGS QUAD   -  EASTON (2016)
 DG6319
 DG6319                         *CURRENT SURVEY CONTROL
 DG6319  ______________________________________________________________________
 DG6319* NAD 83(1986) POSITION- 38 46 04.8    (N) 076 05 38.9    (W)   HD_HELD2
 DG6319* NAVD 88 ORTHO HEIGHT -     1.025 (meters)        3.36  (feet) ADJUSTED
 DG6319  ______________________________________________________________________
 DG6319  GEOID HEIGHT    -        -34.648 (meters)                     GEOID18
 DG6319  DYNAMIC HEIGHT  -          1.024 (meters)        3.36  (feet) COMP
 DG6319  MODELED GRAVITY -    980,036.3   (mgal)                       NAVD 88
 DG6319
 DG6319  VERT ORDER      -  SECOND    CLASS I
 DG6319
 DG6319.The horizontal coordinates were established by autonomous hand held GPS
 DG6319.observations and have an estimated accuracy of +/- 10 meters.
 DG6319
 DG6319.The orthometric height was determined by differential leveling and
 DG6319.adjusted by the NATIONAL GEODETIC SURVEY
 DG6319.in September 2004.
 DG6319
 DG6319.No vertical observational check was made to the station.
 DG6319
 DG6319.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6319.GEOID18 height accuracy estimate available here.
 DG6319
 DG6319.Click photographs - Photos may exist for this station.
 DG6319
 DG6319.The dynamic height is computed by dividing the NAVD 88
 DG6319.geopotential number by the normal gravity value computed on the
 DG6319.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6319.degrees latitude (g = 980.6199 gals.).
 DG6319
 DG6319.The modeled gravity was interpolated from observed gravity values.
 DG6319
 DG6319;                    North         East    Units  Estimated Accuracy
 DG6319;SPC MD       -   122,643.      478,722.      MT  (+/- 10 meters HH2 GPS)
 DG6319
 DG6319_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0494691600(NAD 83)
 DG6319
 DG6319                          SUPERSEDED SURVEY CONTROL
 DG6319
 DG6319.No superseded survey control is available for this station.
 DG6319
 DG6319_MARKER: DD = SURVEY DISK
 DG6319_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6319_STAMPING: BM 1 1999
 DG6319_MARK LOGO: USACE
 DG6319_PROJECTION: FLUSH
 DG6319_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6319_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6319+STABILITY: SURFACE MOTION
 DG6319_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6319+SATELLITE: SATELLITE OBSERVATIONS - August 18, 2000
 DG6319
 DG6319  HISTORY     - Date     Condition        Report By
 DG6319  HISTORY     - 1999     MONUMENTED       USACE
 DG6319  HISTORY     - 20000818 GOOD             MDSHA
 DG6319  HISTORY     - 20061129 MARK NOT FOUND   USPSQD
 DG6319
 DG6319                          STATION DESCRIPTION
 DG6319
 DG6319'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 DG6319'THE MARK IS LOCATED ABOUT 4.5 MI (7.24 KM) EAST-NORTHEAST OF NEWCOMB,
 DG6319'4.0 MI (6.44 KM) SOUTHEAST OF UNIONVILLE AND 1.0 MI (1.61 KM)
 DG6319'WEST-SOUTHWEST OF EASTON.  TO REACH THE MARK FROM THE POST OFFICE IN
 DG6319'EASTON, GO WEST ALONG DOVER STREET FOR 0.14 MILES (0.23 KM) TO
 DG6319'WASHINGTON STREET.  TURN LEFT AND GO SOUTH ALONG WASHINGTON STREET FOR
 DG6319'0.12 MILES (0.19 KM) TO PORT STREET.  TURN RIGHT AND GO WEST ALONG
 DG6319'STATE HIGHWAY 334 (PORT STREET) FOR 0.6 MILES (1.0 KM) TO STATE
 DG6319'HIGHWAY 322.  CONTINUE WEST ALONG STATE HIGHWAY 334 FOR 0.42 MILES
 DG6319'(0.68 KM) TO THE MARK ON THE LEFT.  IT IS 73.3 FEET (22.3 M) SOUTH OF
 DG6319'THE CENTER LINE OF THE PORT STREET, 9.0 FT (2.7 M) EAST OF THE EAST
 DG6319'EDGE OF A MACADAM PARKING LOT, 29.3 FEET (8.9 M) NORTHEAST OF A
 DG6319'CARSONITE WITNESS POST, 30.0 FEET (9.1 M) NORTHEAST OF POWER POLE
 DG6319'NUMBER BW-10-158 AND 90.6 FEET (27.6 M) NORTHEAST OF THE NORTHEAST
 DG6319'CORNER OF BUILDING NUMBER 956 (PEP-UP FUEL).  IT IS A USE DISK SET IN
 DG6319'THE TOP OF A MASS OF CONCRETE FLUSH WITH THE GROUND AND ABOUT LEVEL
 DG6319'WITH THE PARKING LOT.
 DG6319
 DG6319                          STATION RECOVERY (2006)
 DG6319
 DG6319'RECOVERY NOTE BY US POWER SQUADRON 2006 (CPS)
 DG6319'ONSTRUTION HAS BEEN DONE IN THIS AREA. DESPITE GPS, METAL DETECTOR,
 DG6319'AND MEASUREMENTS, NO TRACE WAS FOUNDC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2148 ***********************************************************************
 HU2148  DESIGNATION -  1 KEM
 HU2148  PID         -  HU2148
 HU2148  STATE/COUNTY-  MD/WICOMICO
 HU2148  COUNTRY     -  US
 HU2148  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2148
 HU2148                         *CURRENT SURVEY CONTROL
 HU2148  ______________________________________________________________________
 HU2148* NAD 83(1986) POSITION- 38 25 41.8    (N) 075 47 20.6    (W)   HD_HELD2
 HU2148* NAVD 88 ORTHO HEIGHT -     5.392 (meters)       17.69  (feet) ADJUSTED
 HU2148  ______________________________________________________________________
 HU2148  GEOID HEIGHT    -        -35.588 (meters)                     GEOID18
 HU2148  DYNAMIC HEIGHT  -          5.388 (meters)       17.68  (feet) COMP
 HU2148  MODELED GRAVITY -    980,012.3   (mgal)                       NAVD 88
 HU2148
 HU2148  VERT ORDER      -  SECOND    CLASS I
 HU2148
 HU2148.The horizontal coordinates were established by autonomous hand held GPS
 HU2148.observations and have an estimated accuracy of +/- 10 meters.
 HU2148
 HU2148.The orthometric height was determined by differential leveling and
 HU2148.adjusted by the NATIONAL GEODETIC SURVEY
 HU2148.in June 1991.
 HU2148
 HU2148.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2148.GEOID18 height accuracy estimate available here.
 HU2148
 HU2148.Click photographs - Photos may exist for this station.
 HU2148
 HU2148.The dynamic height is computed by dividing the NAVD 88
 HU2148.geopotential number by the normal gravity value computed on the
 HU2148.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2148.degrees latitude (g = 980.6199 gals.).
 HU2148
 HU2148.The modeled gravity was interpolated from observed gravity values.
 HU2148
 HU2148;                    North         East    Units  Estimated Accuracy
 HU2148;SPC MD       -    85,243.      505,734.      MT  (+/- 10 meters HH2 GPS)
 HU2148
 HU2148_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3112753629(NAD 83)
 HU2148
 HU2148                          SUPERSEDED SURVEY CONTROL
 HU2148
 HU2148  NGVD 29 (06/12/91)    5.637  (m)           18.49   (f) ADJUSTED    2 1
 HU2148
 HU2148.Superseded values are not recommended for survey control.
 HU2148
 HU2148.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2148.See file dsdata.pdf to determine how the superseded data were derived.
 HU2148
 HU2148_MARKER: DB = BENCH MARK DISK
 HU2148_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2148_STAMPING: 1 KEM 1977
 HU2148_MARK LOGO: USGS
 HU2148_PROJECTION: FLUSH
 HU2148_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2148_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2148+STABILITY: SURFACE MOTION
 HU2148_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2148+SATELLITE: SATELLITE OBSERVATIONS - June 07, 2017
 HU2148
 HU2148  HISTORY     - Date     Condition        Report By
 HU2148  HISTORY     - 1977     MONUMENTED       USGS
 HU2148  HISTORY     - 19900307 GOOD             NGS
 HU2148  HISTORY     - 20040624 GOOD             GEOCAC
 HU2148  HISTORY     - 20170607 GOOD             PROFLN
 HU2148
 HU2148                          STATION DESCRIPTION
 HU2148
 HU2148'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2148'4.3 KM (2.67 MI) SOUTHWESTERLY ALONG ATHOL ROAD FROM THE JUNCTION OF
 HU2148'BRIDGE STREET IS MARDELA SPRINGS, 7.8 M (25.59 FT) EAST OF THE CENTER
 HU2148'OF THE ROAD, 2.7 M (8.86 FT) SOUTH OF THE NORTHWEST CORNER OF THE MT.
 HU2148'PLEASANT UNITED METHODIST CHURCH, 2.0 M (6.56 FT) NORTH OF THE CENTER
 HU2148'OF THE FRONT ENTRANCE, 0.7 M (2.30 FT) WEST OF THE WEST FACE OF THE
 HU2148'CHURCH, LEVEL WITH THE ROAD, AND IN A CONCRETE MONUMENT THAT IS FLUSH
 HU2148'WITH THE GROUND SURFACE.
 HU2148
 HU2148                          STATION RECOVERY (2004)
 HU2148
 HU2148'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2148'RECOVERED IN GOOD CONDITION.
 HU2148
 HU2148                          STATION RECOVERY (2017)
 HU2148
 HU2148'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2148'THE MARK IS ON THE LEFT SIDE OF THE STEPS AS YOU FACE THE CHURCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7294 ***********************************************************************
 HV7294  DESIGNATION -  1 RM 1
 HV7294  PID         -  HV7294
 HV7294  STATE/COUNTY-  MD/CALVERT
 HV7294  COUNTRY     -  US
 HV7294  USGS QUAD   -  NORTH BEACH (2016)
 HV7294
 HV7294                         *CURRENT SURVEY CONTROL
 HV7294  ______________________________________________________________________
 HV7294* NAD 83(1993) POSITION- 38 39 18.27641(N) 076 31 40.31573(W)   ADJUSTED
 HV7294* NAVD 88 ORTHO HEIGHT -    31.    (meters)      102.    (feet) SCALED
 HV7294  ______________________________________________________________________
 HV7294  GEOID HEIGHT    -        -33.774 (meters)                     GEOID18
 HV7294  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV7294  HORZ ORDER      -  THIRD
 HV7294
 HV7294.The horizontal coordinates were established by classical geodetic methods
 HV7294.and adjusted by the National Geodetic Survey in November 1994.
 HV7294
 HV7294.The orthometric height was scaled from a topographic map.
 HV7294
 HV7294.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7294.GEOID18 height accuracy estimate available here.
 HV7294
 HV7294.Click photographs - Photos may exist for this station.
 HV7294
 HV7294.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7294
 HV7294. The following values were computed from the NAD 83(1993) position.
 HV7294
 HV7294;                    North         East     Units Scale Factor Converg.
 HV7294;SPC MD       -   109,823.645   441,095.203   MT  0.99995723   +0 17 46.8
 HV7294;SPC MD       -   360,313.08  1,447,159.85   sFT  0.99995723   +0 17 46.8
 HV7294;UTM  18      - 4,279,608.559   367,056.018   MT  0.99981765   -0 57 16.2
 HV7294
 HV7294!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7294!SPC MD       -   1.00000047  x   0.99995723  =   0.99995770
 HV7294!UTM  18      -   1.00000047  x   0.99981765  =   0.99981812
 HV7294
 HV7294_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6705679608(NAD 83)
 HV7294
 HV7294                          SUPERSEDED SURVEY CONTROL
 HV7294
 HV7294  NAD 83(1986)-  38 39 18.27410(N)    076 31 40.32937(W) AD(       ) 3
 HV7294  NAD 27      -  38 39 17.83400(N)    076 31 41.49100(W) AD(       ) 3
 HV7294
 HV7294.Superseded values are not recommended for survey control.
 HV7294
 HV7294.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7294.See file dsdata.pdf to determine how the superseded data were derived.
 HV7294
 HV7294_MARKER: DR = REFERENCE MARK DISK
 HV7294_SETTING: 0 = UNSPECIFIED SETTING
 HV7294_MARK LOGO: CGS
 HV7294
 HV7294  HISTORY     - Date     Condition        Report By
 HV7294  HISTORY     - 1944     MONUMENTED       CGS
 HV7294  HISTORY     - 1960     SEE DESCRIPTION  CGS
 HV7294
 HV7294                          STATION DESCRIPTION
 HV7294
 HV7294'DESCRIBED BY COAST AND GEODETIC SURVEY 1944 (TBR)
 HV7294'REFERENCE MARK 1 IS A STANDARD DISK SET IN TILE COPING ON E FACE
 HV7294'OF ROOF OF BUILDING 1, NAVAL RESEARCH LABORATORY, CHESAPEAKE BEACH.
 HV7294
 HV7294                          STATION RECOVERY (1960)
 HV7294
 HV7294'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7294'STATION DESTROYED.  BUILDING NO. 1 HAS A NEW ROOF.  THE OLD ROOF
 HV7294'WAS REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4037 ***********************************************************************
 AE4037  DESIGNATION -  1 SKS
 AE4037  PID         -  AE4037
 AE4037  STATE/COUNTY-  MD/BALTIMORE
 AE4037  COUNTRY     -  US
 AE4037  USGS QUAD   -  MIDDLE RIVER (2016)
 AE4037
 AE4037                         *CURRENT SURVEY CONTROL
 AE4037  ______________________________________________________________________
 AE4037* NAD 83(1986) POSITION- 39 18 52.1    (N) 076 27 00.3    (W)   HD_HELD2
 AE4037* NAVD 88 ORTHO HEIGHT -    11.307 (meters)       37.10  (feet) ADJUSTED
 AE4037  ______________________________________________________________________
 AE4037  GEOID HEIGHT    -        -32.999 (meters)                     GEOID18
 AE4037  DYNAMIC HEIGHT  -         11.301 (meters)       37.08  (feet) COMP
 AE4037  MODELED GRAVITY -    980,106.5   (mgal)                       NAVD 88
 AE4037
 AE4037  VERT ORDER      -  THIRD
 AE4037
 AE4037.The horizontal coordinates were established by autonomous hand held GPS
 AE4037.observations and have an estimated accuracy of +/- 10 meters.
 AE4037
 AE4037.The orthometric height was determined by differential leveling and
 AE4037.adjusted by the NATIONAL GEODETIC SURVEY
 AE4037.in February 1998.
 AE4037
 AE4037.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4037.GEOID18 height accuracy estimate available here.
 AE4037
 AE4037.Click photographs - Photos may exist for this station.
 AE4037
 AE4037.The dynamic height is computed by dividing the NAVD 88
 AE4037.geopotential number by the normal gravity value computed on the
 AE4037.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4037.degrees latitude (g = 980.6199 gals.).
 AE4037
 AE4037.The modeled gravity was interpolated from observed gravity values.
 AE4037
 AE4037;                    North         East    Units  Estimated Accuracy
 AE4037;SPC MD       -   183,060.      447,424.      MT  (+/- 10 meters HH2 GPS)
 AE4037
 AE4037_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7498952677(NAD 83)
 AE4037
 AE4037                          SUPERSEDED SURVEY CONTROL
 AE4037
 AE4037.No superseded survey control is available for this station.
 AE4037
 AE4037_MARKER: DD = SURVEY DISK
 AE4037_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AE4037_SP_SET: SIDEWALK
 AE4037_STAMPING: 38 1 SKS 1966
 AE4037_MARK LOGO: USGS
 AE4037_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE4037_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AE4037_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4037+SATELLITE: SATELLITE OBSERVATIONS - April 14, 2010
 AE4037
 AE4037  HISTORY     - Date     Condition        Report By
 AE4037  HISTORY     - 1966     MONUMENTED       USGS
 AE4037  HISTORY     - 19950223 GOOD             MCCRON
 AE4037  HISTORY     - 20100414 GOOD             MD-005
 AE4037
 AE4037                          STATION DESCRIPTION
 AE4037
 AE4037'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4037'STATION IS LOCATED ABOUT 1.5 MI (2.4 KM) EAST OF ESSEX IN MIDDLESEX.
 AE4037'TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO ROUTE 702
 AE4037'(SOUTHEAST BLVD) .  FROM THE ROUTE 702 OVERPASS OVER EASTERN BLVD GO
 AE4037'SOUTH ON ROUTE 702 FOR 0.3 MI (0.5 KM) TO EASTERN AVENUE.  TURN LEFT
 AE4037'ON EASTERN AVENUE AND GO EAST FOR 0.2 MI (0.3 KM) TO BACK RIVER NECK
 AE4037'ROAD AND STATION ON THE RIGHT APPROX. 200 FEET SOUTHEAST FROM THE
 AE4037'INTERSECTION AND AT A PEDESTRIAN WALKWAY LEADING TO THE MARS ESTATE
 AE4037'ELEMENTARY SCHOOL. STATION MARK IS SET FLUSH IN A CONCRETE WALK.  IT
 AE4037'IS 23.60 FT (7.19 M) SOUTHWEST FROM THE FACE OF CURB OF BACK RIVER
 AE4037'NECK ROAD, 4 FT (1.2 M) NORTHWEST FROM THE CENTERLINE OF THE CONCRETE
 AE4037'WALK, 1 FT (0.3 M) SOUTHEAST OF THE NORTHWEST CONCRETE PILLAR.
 AE4037
 AE4037                          STATION RECOVERY (2010)
 AE4037
 AE4037'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2010 (ATA)
 AE4037'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2010 (ATA).
 AE4037'ADDITIONAL INFORMATION FOR THE STATION FOLLOWS - THE STATION IS ON THE
 AE4037'SOUTHWEST SIDE OF BACK RIVER NECK ROAD ABOUT 250 FEET SOUTHEAST OF OLD
 AE4037'EASTERN AVENUE. IT IS LOCATED IN THE CONCRETE SIDEWALK LEADING TO THE
 AE4037'MARS ESTATES ELEMENTARY SCHOOL.
 AE4037'THE MARK IS 23.6 FEET SOUTHWEST OF THE CURB FOR BACK RIVER NECK ROAD
 AE4037'AND 4.0 FEET NORTHWEST OF THE CENTER OF THE SIDEWALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0017 ***********************************************************************
 JV0017  DESIGNATION -  1 W
 JV0017  PID         -  JV0017
 JV0017  STATE/COUNTY-  MD/HARFORD
 JV0017  COUNTRY     -  US
 JV0017  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0017
 JV0017                         *CURRENT SURVEY CONTROL
 JV0017  ______________________________________________________________________
 JV0017* NAD 83(1986) POSITION- 39 33 02.62   (N) 076 05 49.22   (W)   HD_HELD1
 JV0017* NAVD 88 ORTHO HEIGHT -    15.459 (meters)       50.72  (feet) ADJUSTED
 JV0017  ______________________________________________________________________
 JV0017  GEOID HEIGHT    -        -33.138 (meters)                     GEOID18
 JV0017  DYNAMIC HEIGHT  -         15.451 (meters)       50.69  (feet) COMP
 JV0017  MODELED GRAVITY -    980,127.7   (mgal)                       NAVD 88
 JV0017
 JV0017  VERT ORDER      -  FIRST     CLASS I
 JV0017
 JV0017.The horizontal coordinates were determined by differentially corrected
 JV0017.hand held GPS observations or other comparable positioning techniques
 JV0017.and have an estimated accuracy of +/- 3 meters.
 JV0017
 JV0017.The orthometric height was determined by differential leveling and
 JV0017.adjusted by the NATIONAL GEODETIC SURVEY
 JV0017.in June 1991.
 JV0017
 JV0017.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0017.GEOID18 height accuracy estimate available here.
 JV0017
 JV0017.Click photographs - Photos may exist for this station.
 JV0017
 JV0017.The dynamic height is computed by dividing the NAVD 88
 JV0017.geopotential number by the normal gravity value computed on the
 JV0017.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0017.degrees latitude (g = 980.6199 gals.).
 JV0017
 JV0017.The modeled gravity was interpolated from observed gravity values.
 JV0017
 JV0017;                    North         East    Units  Estimated Accuracy
 JV0017;SPC MD       -   209,530.9     477,613.4     MT  (+/- 3 meters HH1 GPS) 
 JV0017
 JV0017_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0574878468(NAD 83)
 JV0017
 JV0017                          SUPERSEDED SURVEY CONTROL
 JV0017
 JV0017  NGVD 29 (11/26/84)   15.703  (m)           51.52   (f) ADJUSTED    1 1
 JV0017
 JV0017.Superseded values are not recommended for survey control.
 JV0017
 JV0017.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0017.See file dsdata.pdf to determine how the superseded data were derived.
 JV0017
 JV0017_MARKER: DB = BENCH MARK DISK
 JV0017_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JV0017_SP_SET: WINGWALL
 JV0017_STAMPING: 52 NO 1 W 1926
 JV0017_MARK LOGO: USGS
 JV0017_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0017_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0017+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2002
 JV0017
 JV0017  HISTORY     - Date     Condition        Report By
 JV0017  HISTORY     - 1926     MONUMENTED       USGS
 JV0017  HISTORY     - 1971     GOOD             NGS
 JV0017  HISTORY     - 1979     GOOD             NGS
 JV0017  HISTORY     - 19891102 GOOD             NGS
 JV0017  HISTORY     - 19970419 POOR             USPSQD
 JV0017  HISTORY     - 20020309 GOOD             USPSQD
 JV0017
 JV0017                          STATION DESCRIPTION
 JV0017
 JV0017'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0017'AT HAVRE DE GRACE.
 JV0017'AT HAVRE DE GRACE, ABOUT 0.35 MILE SOUTHWEST ALONG THE
 JV0017'PENNSYLVANIA RAILROAD FROM THE SOUTHWEST END OF THE RAILROAD
 JV0017'BRIDGE OVER THE SUSQUEHANNA RIVER, 17 FEET SOUTHEAST OF THE
 JV0017'SOUTHEAST RAIL, SET IN THE TOP OF THE SOUTHEAST STONE WING WALL
 JV0017'OF THE NORTHEAST STONE ABUTMENT OF THE OVERPASS FOR JUNIATA
 JV0017'STREET, AND ABOUT 1 1/2 FEET BELOW THE LEVEL OF THE TRACK.
 JV0017
 JV0017                          STATION RECOVERY (1979)
 JV0017
 JV0017'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0017'RECOVERED IN GOOD CONDITION.
 JV0017
 JV0017                          STATION RECOVERY (1989)
 JV0017
 JV0017'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0017'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN HAVRE DE
 JV0017'GRACE, AT THE INTERSECTION OF THE AMTRAK RAILROAD AND JUNIATA STREET,
 JV0017'IN TOP OF AND 0.4 M (1.3 FT) NORTHWEST OF THE SOUTHEAST END OF THE
 JV0017'SOUTHEAST WINGWALL OF THE RAILROAD OVERPASS OF THE STREET, 12.8 M
 JV0017'(42.0 FT) EAST OF THE CENTERLINE OF THE STREET, 8.0 M (26.2 FT) ABOVE
 JV0017'THE LEVEL OF THE STREET, 5.2 M (17.1 FT) SOUTHEAST OF THE NEAR RAIL,
 JV0017'AND 0.5 M (1.6 FT) BELOW THE LEVEL OF THE TRACK.  NOTE--THE ORIGINAL
 JV0017'DESCRIPTION STATES THE STAMPING IS S 2 NO 1 1926, BUT IT WAS READ AS
 JV0017'52 NO 1 1926 AT THIS TIME.
 JV0017
 JV0017                          STATION RECOVERY (1997)
 JV0017
 JV0017'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0017'MARK RECOVERED IN POOR CONDITION.
 JV0017
 JV0017                          STATION RECOVERY (2002)
 JV0017
 JV0017'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV0017'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2857 ***********************************************************************
 JV2857  DESIGNATION -  1 WO
 JV2857  PID         -  JV2857
 JV2857  STATE/COUNTY-  MD/MONTGOMERY
 JV2857  COUNTRY     -  US
 JV2857  USGS QUAD   -  ROCKVILLE (2016)
 JV2857
 JV2857                         *CURRENT SURVEY CONTROL
 JV2857  ______________________________________________________________________
 JV2857* NAD 83(1986) POSITION- 39 05 09.     (N) 077 11 56.     (W)   SCALED
 JV2857* NAVD 88 ORTHO HEIGHT -   137.53  (+/-2cm)      451.2   (feet) VERTCON3
 JV2857  ______________________________________________________________________
 JV2857  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV2857  VERT ORDER      -  ? (See Below)
 JV2857
 JV2857.The horizontal coordinates were scaled from a map and have
 JV2857.an estimated accuracy of +/- 6 seconds.
 JV2857
 JV2857.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2857.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2857
 JV2857.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2857.GEOID18 height accuracy estimate available here.
 JV2857
 JV2857.The vertical order pertains to the NGVD 29 superseded value.
 JV2857
 JV2857.Click photographs - Photos may exist for this station.
 JV2857
 JV2857;                    North         East    Units  Estimated Accuracy
 JV2857;SPC MD       -   157,550.      382,790.      MT  (+/- 180 meters Scaled)
 JV2857
 JV2857_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ098286(NAD 83)
 JV2857
 JV2857                          SUPERSEDED SURVEY CONTROL
 JV2857
 JV2857  NGVD 29 (11/26/84)  137.747  (m)          451.92   (f) ADJUSTED       
 JV2857
 JV2857.Superseded values are not recommended for survey control.
 JV2857
 JV2857.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2857.See file dsdata.pdf to determine how the superseded data were derived.
 JV2857
 JV2857_MARKER: DD = SURVEY DISK
 JV2857_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV2857_SP_SET: CULVERT
 JV2857_STAMPING: 1 WO 1944 452
 JV2857_MARK LOGO: USGS
 JV2857_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2857
 JV2857  HISTORY     - Date     Condition        Report By
 JV2857  HISTORY     - 1944     MONUMENTED       USGS
 JV2857  HISTORY     - 1965     GOOD             WSSC
 JV2857
 JV2857                          STATION DESCRIPTION
 JV2857
 JV2857'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2857'2.8 MI W FROM ROCKVILLE.
 JV2857'2.75 MI. W. ALONG STATE HWY. 28 FROM THE COURTHOUSE AT ROCKVILLE,
 JV2857'0.15 MI. N.W. OF THE JUNCTION WITH SHADY GROVE ROAD 60 FT. S.E.
 JV2857'OF A WHITE HOUSE, 6 FT. N. OF PEPCO POLE 612 212, IN TOP OF S.E.
 JV2857'END OF S.W. HEAD WALL OF CONCRETE CULVERT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0521 ***********************************************************************
 HU0521  DESIGNATION -  10
 HU0521  PID         -  HU0521
 HU0521  STATE/COUNTY-  MD/WORCESTER
 HU0521  COUNTRY     -  US
 HU0521  USGS QUAD   -  POCOMOKE CITY (2016)
 HU0521
 HU0521                         *CURRENT SURVEY CONTROL
 HU0521  ______________________________________________________________________
 HU0521* NAD 83(1986) POSITION- 38 00 33.     (N) 075 32 51.     (W)   SCALED
 HU0521* NAVD 88 ORTHO HEIGHT -     2.540 (meters)        8.33  (feet) ADJUSTED
 HU0521  ______________________________________________________________________
 HU0521  GEOID HEIGHT    -        -36.371 (meters)                     GEOID18
 HU0521  DYNAMIC HEIGHT  -          2.539 (meters)        8.33  (feet) COMP
 HU0521  MODELED GRAVITY -    979,967.0   (mgal)                       NAVD 88
 HU0521
 HU0521  VERT ORDER      -  FIRST     CLASS I
 HU0521
 HU0521.The horizontal coordinates were scaled from a map and have
 HU0521.an estimated accuracy of +/- 6 seconds.
 HU0521
 HU0521.The orthometric height was determined by differential leveling and
 HU0521.adjusted by the NATIONAL GEODETIC SURVEY
 HU0521.in June 1991.
 HU0521
 HU0521.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0521.GEOID18 height accuracy estimate available here.
 HU0521
 HU0521.Click photographs - Photos may exist for this station.
 HU0521
 HU0521.The dynamic height is computed by dividing the NAVD 88
 HU0521.geopotential number by the normal gravity value computed on the
 HU0521.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0521.degrees latitude (g = 980.6199 gals.).
 HU0521
 HU0521.The modeled gravity was interpolated from observed gravity values.
 HU0521
 HU0521;                    North         East    Units  Estimated Accuracy
 HU0521;SPC MD       -    39,030.      527,560.      MT  (+/- 180 meters Scaled)
 HU0521
 HU0521_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH519069(NAD 83)
 HU0521
 HU0521                          SUPERSEDED SURVEY CONTROL
 HU0521
 HU0521  NGVD 29 (11/26/84)    2.791  (m)            9.16   (f) ADJUSTED    1 1
 HU0521
 HU0521.Superseded values are not recommended for survey control.
 HU0521
 HU0521.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0521.See file dsdata.pdf to determine how the superseded data were derived.
 HU0521
 HU0521_MARKER: DB = BENCH MARK DISK
 HU0521_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU0521_SP_SET: CULVERT HEADWALL
 HU0521_STAMPING: 10
 HU0521_MARK LOGO: USGS
 HU0521_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0521+STABILITY: SURFACE MOTION
 HU0521
 HU0521  HISTORY     - Date     Condition        Report By
 HU0521  HISTORY     - UNK      MONUMENTED       USGS
 HU0521  HISTORY     - 1972     POOR             NGS
 HU0521
 HU0521                          STATION DESCRIPTION
 HU0521
 HU0521'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0521'4.6 MI S FROM POCOMOKE CITY.
 HU0521'ABOUT 4.6 MILES SOUTH ALONG THE PENN CENTRAL RAILROAD FROM THE
 HU0521'CROSSING OF CLARKE AVENUE AT POCOMOKE CITY, 0.2 MILE SOUTH OF
 HU0521'MILEPOST 35, SET ON THE TOP OF THE SOUTH END OF THE 29 FOOT LONG
 HU0521'WEST CONCRETE HEADWALL FOR 5 -36-INCH PIPE CULVERT FOR WAGRAM CREEK
 HU0521'UNDER THE TRACK, 30 FEET WEST OF THE WEST RAIL OF THE TRACK AND 5
 HU0521'FEET BELOW THE LEVEL OF THE TRACK, 2 FEET WEST-SOUTHWEST OF A METAL
 HU0521'WITNESS POST.  NOTE-- THE DISK IS BATTERED.  STAMPING NO LONGER
 HU0521'LEDGIBLE.  THE HEADWALL FOR THE CULVERT HAS SOME CRACKS IN IT.
 HU0521'MARK SHOULD PROBABLY BE USED WITH CAUTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3561 ***********************************************************************
 JU3561  DESIGNATION -  10
 JU3561  PID         -  JU3561
 JU3561  STATE/COUNTY-  MD/CECIL
 JU3561  COUNTRY     -  US
 JU3561  USGS QUAD   -  EARLEVILLE (2016)
 JU3561
 JU3561                         *CURRENT SURVEY CONTROL
 JU3561  ______________________________________________________________________
 JU3561* NAD 83(1991) POSITION- 39 26 52.36683(N) 075 58 34.78513(W)   ADJUSTED
 JU3561* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JU3561  ______________________________________________________________________
 JU3561  GEOID HEIGHT    -        -33.371 (meters)                     GEOID18
 JU3561  LAPLACE CORR    -         -0.73  (seconds)                    DEFLEC18
 JU3561  HORZ ORDER      -  THIRD
 JU3561
 JU3561.The horizontal coordinates were established by classical geodetic methods
 JU3561.and adjusted by the National Geodetic Survey in January 1992.
 JU3561
 JU3561.The orthometric height was scaled from a topographic map.
 JU3561
 JU3561.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3561.GEOID18 height accuracy estimate available here.
 JU3561
 JU3561.Click photographs - Photos may exist for this station.
 JU3561
 JU3561.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3561
 JU3561. The following values were computed from the NAD 83(1991) position.
 JU3561
 JU3561;                    North         East     Units Scale Factor Converg.
 JU3561;SPC MD       -   198,222.288   488,113.272   MT  0.99999963   +0 38 33.0
 JU3561;SPC MD       -   650,334.29  1,601,418.29   sFT  0.99999963   +0 38 33.0
 JU3561;UTM  18      - 4,366,934.981   415,992.725   MT  0.99968689   -0 37 13.3
 JU3561
 JU3561!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3561!SPC MD       -   1.00000496  x   0.99999963  =   1.00000459
 JU3561!UTM  18      -   1.00000496  x   0.99968689  =   0.99969185
 JU3561
 JU3561:                Primary Azimuth Mark                     Grid Az
 JU3561:SPC MD       -  CHRYSTAL                                 186 37 46.8
 JU3561:UTM  18      -  CHRYSTAL                                 187 53 33.1
 JU3561
 JU3561_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1599266934(NAD 83)
 JU3561
 JU3561|---------------------------------------------------------------------|
 JU3561| PID    Reference Object                     Distance      Geod. Az  |
 JU3561|                                                           dddmmss.s |
 JU3561| JU3574 CHRYSTAL                            448.238 METERS 1871619.8 |
 JU3561|---------------------------------------------------------------------|
 JU3561
 JU3561                          SUPERSEDED SURVEY CONTROL
 JU3561
 JU3561  NAD 83(1986)-  39 26 52.35917(N)    075 58 34.79144(W) AD(       ) 3
 JU3561  NAD 27      -  39 26 51.96300(N)    075 58 36.00300(W) AD(       ) 3
 JU3561
 JU3561.Superseded values are not recommended for survey control.
 JU3561
 JU3561.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3561.See file dsdata.pdf to determine how the superseded data were derived.
 JU3561
 JU3561_MARKER: DD = SURVEY DISK
 JU3561_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3561_STAMPING: NO. 10
 JU3561_MARK LOGO: USACE
 JU3561_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3561+STABILITY: SURFACE MOTION
 JU3561
 JU3561  HISTORY     - Date     Condition        Report By
 JU3561  HISTORY     - 1937     MONUMENTED       USACE
 JU3561  HISTORY     - 1938     GOOD             CGS
 JU3561
 JU3561                          STATION DESCRIPTION
 JU3561
 JU3561'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3561'LOCATED ON THE E SIDE OF ELK RIVER AT WHITE CRYSTAL BEACH AT
 JU3561'THE RUINS OF REYBOLDS WHARF.  THE STATION IS MARKED BY A STANDARD
 JU3561'U.S.E.D. DISK (STAMPED NO.10) SET ATOP A 6-INCH SQUARE CONCRETE
 JU3561'POST AND PROJECTS 6 INCHES ABOVE GROUND.
 JU3561
 JU3561                          STATION RECOVERY (1938)
 JU3561
 JU3561'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JU3561'STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.  THE
 JU3561'PRESENT DESCRIPTION IS ADEQUATE.  NO REFERENCE MARKS WERE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2186 ***********************************************************************
 HU2186  DESIGNATION -  10 KEM
 HU2186  PID         -  HU2186
 HU2186  STATE/COUNTY-  MD/WICOMICO
 HU2186  COUNTRY     -  US
 HU2186  USGS QUAD   -  WETIPQUIN (2016)
 HU2186
 HU2186                         *CURRENT SURVEY CONTROL
 HU2186  ______________________________________________________________________
 HU2186* NAD 83(1986) POSITION- 38 19 47.0    (N) 075 48 41.2    (W)   HD_HELD2
 HU2186* NAVD 88 ORTHO HEIGHT -     2.006 (meters)        6.58  (feet) ADJUSTED
 HU2186  ______________________________________________________________________
 HU2186  GEOID HEIGHT    -        -35.728 (meters)                     GEOID18
 HU2186  DYNAMIC HEIGHT  -          2.005 (meters)        6.58  (feet) COMP
 HU2186  MODELED GRAVITY -    979,999.1   (mgal)                       NAVD 88
 HU2186
 HU2186  VERT ORDER      -  SECOND    CLASS I
 HU2186
 HU2186.The horizontal coordinates were established by autonomous hand held GPS
 HU2186.observations and have an estimated accuracy of +/- 10 meters.
 HU2186
 HU2186.The orthometric height was determined by differential leveling and
 HU2186.adjusted by the NATIONAL GEODETIC SURVEY
 HU2186.in June 1991.
 HU2186
 HU2186.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2186.GEOID18 height accuracy estimate available here.
 HU2186
 HU2186.Click photographs - Photos may exist for this station.
 HU2186
 HU2186.The dynamic height is computed by dividing the NAVD 88
 HU2186.geopotential number by the normal gravity value computed on the
 HU2186.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2186.degrees latitude (g = 980.6199 gals.).
 HU2186
 HU2186.The modeled gravity was interpolated from observed gravity values.
 HU2186
 HU2186;                    North         East    Units  Estimated Accuracy
 HU2186;SPC MD       -    74,279.      503,921.      MT  (+/- 10 meters HH2 GPS)
 HU2186
 HU2186_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2907642710(NAD 83)
 HU2186
 HU2186                          SUPERSEDED SURVEY CONTROL
 HU2186
 HU2186  NGVD 29 (06/12/91)    2.260  (m)            7.41   (f) ADJUSTED    2 1
 HU2186
 HU2186.Superseded values are not recommended for survey control.
 HU2186
 HU2186.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2186.See file dsdata.pdf to determine how the superseded data were derived.
 HU2186
 HU2186_MARKER: DB = BENCH MARK DISK
 HU2186_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2186_STAMPING: 10 KEM 1977
 HU2186_MARK LOGO: USGS
 HU2186_PROJECTION: FLUSH
 HU2186_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2186_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2186+STABILITY: SURFACE MOTION
 HU2186_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2186+SATELLITE: SATELLITE OBSERVATIONS - May 15, 2019
 HU2186
 HU2186  HISTORY     - Date     Condition        Report By
 HU2186  HISTORY     - 1977     MONUMENTED       USGS
 HU2186  HISTORY     - 19900308 GOOD             NGS
 HU2186  HISTORY     - 20170330 GOOD             PROFLN
 HU2186  HISTORY     - 20190515 GOOD             PROFLN
 HU2186
 HU2186                          STATION DESCRIPTION
 HU2186
 HU2186'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2186'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM ITS JUNCTION
 HU2186'WITH CHERRY WALK ROAD IN QUANTICO, THENCE 7.7 KM (4.78 MI)
 HU2186'SOUTHWESTERLY ALONG STATE HIGHWAY 349, 19.4 M (63.65 FT) SOUTHEAST OF
 HU2186'AND LEVEL WITH THE CENTERLINE OF THE HIGHWAY, 6.7 M (21.98 FT)
 HU2186'SOUTHWEST OF THE CENTER OF THE WETIPGUIN ROAD, 0.6 M (1.97 FT)
 HU2186'SOUTHWEST OF UTILITY POLE NUMBER Y 279, AND IN A CONCRETE MONUMENT
 HU2186'THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2186
 HU2186                          STATION RECOVERY (2017)
 HU2186
 HU2186'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2186'RECOVERED IN GOOD CONDITION.
 HU2186
 HU2186                          STATION RECOVERY (2019)
 HU2186
 HU2186'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2186'THE POLE NUMBER IS ALSO 712 59 206.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1186 ***********************************************************************
 JV1186  DESIGNATION -  10 PRR
 JV1186  PID         -  JV1186
 JV1186  STATE/COUNTY-  MD/BALTIMORE
 JV1186  COUNTRY     -  US
 JV1186  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1186
 JV1186                         *CURRENT SURVEY CONTROL
 JV1186  ______________________________________________________________________
 JV1186* NAD 83(1986) POSITION- 39 23 53.     (N) 076 38 44.     (W)   SCALED
 JV1186* NAVD 88 ORTHO HEIGHT -    82.019 (meters)      269.09  (feet) ADJUSTED
 JV1186  ______________________________________________________________________
 JV1186  GEOID HEIGHT    -        -32.483 (meters)                     GEOID18
 JV1186  DYNAMIC HEIGHT  -         81.975 (meters)      268.95  (feet) COMP
 JV1186  MODELED GRAVITY -    980,099.6   (mgal)                       NAVD 88
 JV1186
 JV1186  VERT ORDER      -  SECOND    CLASS 0
 JV1186
 JV1186.The horizontal coordinates were scaled from a map and have
 JV1186.an estimated accuracy of +/- 6 seconds.
 JV1186
 JV1186.The orthometric height was determined by differential leveling and
 JV1186.adjusted by the NATIONAL GEODETIC SURVEY
 JV1186.in June 1991.
 JV1186
 JV1186.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1186.GEOID18 height accuracy estimate available here.
 JV1186
 JV1186.Click photographs - Photos may exist for this station.
 JV1186
 JV1186.The dynamic height is computed by dividing the NAVD 88
 JV1186.geopotential number by the normal gravity value computed on the
 JV1186.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1186.degrees latitude (g = 980.6199 gals.).
 JV1186
 JV1186.The modeled gravity was interpolated from observed gravity values.
 JV1186
 JV1186;                    North         East    Units  Estimated Accuracy
 JV1186;SPC MD       -   192,260.      430,530.      MT  (+/- 180 meters Scaled)
 JV1186
 JV1186_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ583622(NAD 83)
 JV1186
 JV1186                          SUPERSEDED SURVEY CONTROL
 JV1186
 JV1186  NGVD 29 (11/26/84)   82.244  (m)          269.83   (f) ADJUSTED    2 0
 JV1186
 JV1186.Superseded values are not recommended for survey control.
 JV1186
 JV1186.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1186.See file dsdata.pdf to determine how the superseded data were derived.
 JV1186
 JV1186_MARKER: Z = SEE DESCRIPTION
 JV1186_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1186_SP_SET: OVERPASS
 JV1186_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1186
 JV1186  HISTORY     - Date     Condition        Report By
 JV1186  HISTORY     - UNK      MONUMENTED       PRR
 JV1186  HISTORY     - 1942     GOOD             CGS
 JV1186
 JV1186                          STATION DESCRIPTION
 JV1186
 JV1186'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1186'AT RUXTON.
 JV1186'AT RUXTON, BALTIMORE COUNTY, 240 FEET SOUTH OF THE PENNSYLVANIA
 JV1186'RAILROAD STATION, AND ON THE TOP OF THE WEST ABUTMENT OF AN
 JV1186'OVERPASS.  A CHISELED SHELF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2788 ***********************************************************************
 HU2788  DESIGNATION -  10 WDK
 HU2788  PID         -  HU2788
 HU2788  STATE/COUNTY-  MD/WORCESTER
 HU2788  COUNTRY     -  US
 HU2788  USGS QUAD   -  BERLIN (2016)
 HU2788
 HU2788                         *CURRENT SURVEY CONTROL
 HU2788  ______________________________________________________________________
 HU2788* NAD 83(1986) POSITION- 38 22 19.5    (N) 075 09 48.9    (W)   HD_HELD2
 HU2788* NAVD 88 ORTHO HEIGHT -     4.668 (meters)       15.31  (feet) ADJUSTED
 HU2788  ______________________________________________________________________
 HU2788  GEOID HEIGHT    -        -35.982 (meters)                     GEOID18
 HU2788  DYNAMIC HEIGHT  -          4.665 (meters)       15.31  (feet) COMP
 HU2788  MODELED GRAVITY -    980,011.8   (mgal)                       NAVD 88
 HU2788
 HU2788  VERT ORDER      -  SECOND    CLASS I
 HU2788
 HU2788.The horizontal coordinates were established by autonomous hand held GPS
 HU2788.observations and have an estimated accuracy of +/- 10 meters.
 HU2788
 HU2788.The orthometric height was determined by differential leveling and
 HU2788.adjusted by the NATIONAL GEODETIC SURVEY
 HU2788.in November 1994.
 HU2788
 HU2788.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2788.GEOID18 height accuracy estimate available here.
 HU2788
 HU2788.Click photographs - Photos may exist for this station.
 HU2788
 HU2788.The dynamic height is computed by dividing the NAVD 88
 HU2788.geopotential number by the normal gravity value computed on the
 HU2788.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2788.degrees latitude (g = 980.6199 gals.).
 HU2788
 HU2788.The modeled gravity was interpolated from observed gravity values.
 HU2788
 HU2788;                    North         East    Units  Estimated Accuracy
 HU2788;SPC MD       -    79,918.      560,466.      MT  (+/- 10 meters HH2 GPS)
 HU2788
 HU2788_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8571047112(NAD 83)
 HU2788
 HU2788                          SUPERSEDED SURVEY CONTROL
 HU2788
 HU2788  NGVD 29 (02/25/92)    4.911  (m)           16.11   (f) ADJUSTED    2 1
 HU2788
 HU2788.Superseded values are not recommended for survey control.
 HU2788
 HU2788.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2788.See file dsdata.pdf to determine how the superseded data were derived.
 HU2788
 HU2788_MARKER: DD = SURVEY DISK
 HU2788_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2788_STAMPING: 10 WDK 1963
 HU2788_MARK LOGO: USGS
 HU2788_PROJECTION: PROJECTING 9 CENTIMETERS
 HU2788_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2788_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2788+STABILITY: SURFACE MOTION
 HU2788_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2788+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2013
 HU2788
 HU2788  HISTORY     - Date     Condition        Report By
 HU2788  HISTORY     - 1963     MONUMENTED       USGS
 HU2788  HISTORY     - 19910514 GOOD             MDSHA
 HU2788  HISTORY     - 20020306 GOOD             USPSQD
 HU2788  HISTORY     - 20031229 GOOD             USPSQD
 HU2788  HISTORY     - 20051220 GOOD             USPSQD
 HU2788  HISTORY     - 20070716 GOOD             MDSHA
 HU2788  HISTORY     - 20130227 GOOD             ARCSHE
 HU2788
 HU2788                          STATION DESCRIPTION
 HU2788
 HU2788'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2788'THE MARK IS LOCATED ABOUT 5.06 MI (8.14 KM) WEST OF OCEAN CITY, 4.45
 HU2788'MI (7.16 KM) NORTHEAST OF BERLIN AND ON ROAD RIGHT-OF-WAY.  TO REACH
 HU2788'FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113, GO EAST ON U.S.
 HU2788'HIGHWAY 50 FOR 2.55 MI (4.10 KM) TO A ROAD LEFT.  TURN LEFT AND GO
 HU2788'NORTH ON STATE ROUTE 589 FOR 1.86 MI (2.99 KM) TO THE MARK ON THE
 HU2788'RIGHT.  IT IS 79.9 FT (24.4 M) SOUTH OF A METAL TRAFFIC SIGNAL POLE,
 HU2788'74.8 FT (22.8 M) SOUTHEAST OF A LIGHT POLE, 46.4 FT (14.1 M)
 HU2788'SOUTHWEST OF THE SOUTHWEST CORNER OF A ONE STORY HOUSE, 29.3 FT (8.9
 HU2788'M) EAST OF THE CENTER LINE OF ROUTE 589, 1.7 FT (0.5 M) WEST OF A
 HU2788'METAL WITNESS POST AND SET IN THE TOP OF A 0.7 FT (0.2 M) SQUARE
 HU2788'CONCRETE POST PROJECTING 0.3 FT (0.1 M) .
 HU2788
 HU2788                          STATION RECOVERY (2002)
 HU2788
 HU2788'RECOVERY NOTE BY US POWER SQUADRON 2002 (RBD)
 HU2788'RECOVERED IN GOOD CONDITION.
 HU2788
 HU2788                          STATION RECOVERY (2003)
 HU2788
 HU2788'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU2788'RECOVERED IN GOOD CONDITION.
 HU2788
 HU2788                          STATION RECOVERY (2005)
 HU2788
 HU2788'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU2788'RECOVERED IN GOOD CONDITION.
 HU2788
 HU2788                          STATION RECOVERY (2007)
 HU2788
 HU2788'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 HU2788'RECOVERED IN GOOD CONDITION
 HU2788
 HU2788                          STATION RECOVERY (2013)
 HU2788
 HU2788'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU2788'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9248 ***********************************************************************
 DP9248  DESIGNATION -  1001
 DP9248  PID         -  DP9248
 DP9248  STATE/COUNTY-  MD/WORCESTER
 DP9248  COUNTRY     -  US
 DP9248  USGS QUAD   -  OCEAN CITY (2016)
 DP9248
 DP9248                         *CURRENT SURVEY CONTROL
 DP9248  ______________________________________________________________________
 DP9248* NAD 83(1986) POSITION- 38 16 23.     (N) 075 07 14.     (W)   SCALED
 DP9248* NAVD 88 ORTHO HEIGHT -     2.450 (meters)        8.04  (feet) ADJUSTED
 DP9248  ______________________________________________________________________
 DP9248  GEOID HEIGHT    -        -36.123 (meters)                     GEOID18
 DP9248  DYNAMIC HEIGHT  -          2.448 (meters)        8.03  (feet) COMP
 DP9248  MODELED GRAVITY -    980,001.2   (mgal)                       NAVD 88
 DP9248
 DP9248  VERT ORDER      -  SECOND    CLASS II
 DP9248
 DP9248.The horizontal coordinates were scaled from a map and have
 DP9248.an estimated accuracy of +/- 6 seconds.
 DP9248
 DP9248.The orthometric height was determined by differential leveling and
 DP9248.adjusted by the NATIONAL GEODETIC SURVEY
 DP9248.in July 2016.
 DP9248
 DP9248.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9248.GEOID18 height accuracy estimate available here.
 DP9248
 DP9248.Click photographs - Photos may exist for this station.
 DP9248
 DP9248.The dynamic height is computed by dividing the NAVD 88
 DP9248.geopotential number by the normal gravity value computed on the
 DP9248.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9248.degrees latitude (g = 980.6199 gals.).
 DP9248
 DP9248.The modeled gravity was interpolated from observed gravity values.
 DP9248
 DP9248;                    North         East    Units  Estimated Accuracy
 DP9248;SPC MD       -    69,010.      564,450.      MT  (+/- 180 meters Scaled)
 DP9248
 DP9248_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH894361(NAD 83)
 DP9248
 DP9248                          SUPERSEDED SURVEY CONTROL
 DP9248
 DP9248.No superseded survey control is available for this station.
 DP9248
 DP9248_MARKER: DJ = TIDAL STATION DISK
 DP9248_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9248_STAMPING: 1001
 DP9248_MARK LOGO: USACE
 DP9248_PROJECTION: FLUSH
 DP9248_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9248_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9248_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP9248+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9248
 DP9248  HISTORY     - Date     Condition        Report By
 DP9248  HISTORY     - UNK      MONUMENTED       USACE
 DP9248  HISTORY     - 20150227 GOOD             NPS
 DP9248
 DP9248                          STATION DESCRIPTION
 DP9248
 DP9248'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9248'THE STATION IS LOCATED ABOUT 8.2 MI (13.2 KM) SOUTH-SOUTHEAST OF OCEAN
 DP9248'PINES, 6.3 MI (10.1 KM) EAST-SOUTHEAST OF BERLIN AND 4.8 MI (7.7 KM)
 DP9248'SOUTH-SOUTHWEST OF OCEAN CITY.
 DP9248'
 DP9248'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY.  CONTINUE ON
 DP9248'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9248'SHELL ROAD.
 DP9248'
 DP9248'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9248'NATIONAL SEASHORE.
 DP9248'
 DP9248'THE STATION IS NORTHEAST OF KM 6.0 AND SET ON THE SOUTH SIDE OF A DUNE
 DP9248'26.6 M (87.3 FT) NORTHEAST OF KILOMETER POST 6.0 AND 16 CM (6 INCHES)
 DP9248'SOUTHEAST OF ORANGE CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1151 ***********************************************************************
 JW1151  DESIGNATION -  101 BC
 JW1151  PID         -  JW1151
 JW1151  STATE/COUNTY-  MD/GARRETT
 JW1151  COUNTRY     -  US
 JW1151  USGS QUAD   -  KITZMILLER (2016)
 JW1151
 JW1151                         *CURRENT SURVEY CONTROL
 JW1151  ______________________________________________________________________
 JW1151* NAD 83(1986) POSITION- 39 28 18.     (N) 079 10 05.     (W)   SCALED
 JW1151* NAVD 88 ORTHO HEIGHT -   840.600 (meters)     2757.87  (feet) ADJUSTED
 JW1151  ______________________________________________________________________
 JW1151  GEOID HEIGHT    -        -31.559 (meters)                     GEOID18
 JW1151  DYNAMIC HEIGHT  -        840.016 (meters)     2755.95  (feet) COMP
 JW1151  MODELED GRAVITY -    979,902.8   (mgal)                       NAVD 88
 JW1151
 JW1151  VERT ORDER      -  FIRST     CLASS II
 JW1151
 JW1151.The horizontal coordinates were scaled from a map and have
 JW1151.an estimated accuracy of +/- 6 seconds.
 JW1151
 JW1151.The orthometric height was determined by differential leveling and
 JW1151.adjusted by the NATIONAL GEODETIC SURVEY
 JW1151.in June 1991.
 JW1151
 JW1151.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1151.GEOID18 height accuracy estimate available here.
 JW1151
 JW1151.Click photographs - Photos may exist for this station.
 JW1151
 JW1151.The dynamic height is computed by dividing the NAVD 88
 JW1151.geopotential number by the normal gravity value computed on the
 JW1151.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1151.degrees latitude (g = 980.6199 gals.).
 JW1151
 JW1151.The modeled gravity was interpolated from observed gravity values.
 JW1151
 JW1151;                    North         East    Units  Estimated Accuracy
 JW1151;SPC MD       -   202,580.      213,460.      MT  (+/- 180 meters Scaled)
 JW1151
 JW1151_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD575707(NAD 83)
 JW1151
 JW1151                          SUPERSEDED SURVEY CONTROL
 JW1151
 JW1151.No superseded survey control is available for this station.
 JW1151
 JW1151_MARKER: DD = SURVEY DISK
 JW1151_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1151_STAMPING: 101 BC 2758 1946
 JW1151_MARK LOGO: USGS
 JW1151_PROJECTION: PROJECTING 10 CENTIMETERS
 JW1151_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1151+STABILITY: SURFACE MOTION
 JW1151
 JW1151  HISTORY     - Date     Condition        Report By
 JW1151  HISTORY     - 1946     MONUMENTED       USGS
 JW1151  HISTORY     - 1983     GOOD             NGS
 JW1151
 JW1151                          STATION DESCRIPTION
 JW1151
 JW1151'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1151'13.0 KM (8.05 MI) WEST FROM LUKE.
 JW1151'13.0 KM (8.05 MI) WEST ALONG STATE HIGHWAY 135 FROM THE POST OFFICE IN
 JW1151'LUKE TO THE MARK ON THE LEFT, AT THE JUNCTION OF A PAVED ROAD LEADING
 JW1151'SOUTH, 10.21 METERS (33.5 FT) SOUTH OF THE CENTERLINE OF THE HIGHWAY,
 JW1151'42.7 METERS (140.0 FT) NORTHEAST OF THE NORTHEAST CORNER OF A SINGLE
 JW1151'STORY FRAME HOUSE, 10.21 METERS (33.5 FT) WEST OF THE CENTER OF THE
 JW1151'PAVED ROAD, 0.61 METER (2.0 FT) NORTHWEST OF THE SOUTH LEG OF A WOODEN
 JW1151'SIGN FOR THE JUVENILE SERVICE BACK BONE MOUNTAIN CENTER.
 JW1151'THE MARK IS 0.18 M BELOW HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0721 ***********************************************************************
 JV0721  DESIGNATION -  101 BORR
 JV0721  PID         -  JV0721
 JV0721  STATE/COUNTY-  MD/BALTIMORE
 JV0721  COUNTRY     -  US
 JV0721  USGS QUAD   -  RELAY (2016)
 JV0721
 JV0721                         *CURRENT SURVEY CONTROL
 JV0721  ______________________________________________________________________
 JV0721* NAD 83(1986) POSITION- 39 13 54.     (N) 076 44 07.     (W)   SCALED
 JV0721* NAVD 88 ORTHO HEIGHT -    21.404 (meters)       70.22  (feet) ADJUSTED
 JV0721  ______________________________________________________________________
 JV0721  GEOID HEIGHT    -        -32.433 (meters)                     GEOID18
 JV0721  DYNAMIC HEIGHT  -         21.393 (meters)       70.19  (feet) COMP
 JV0721  MODELED GRAVITY -    980,097.3   (mgal)                       NAVD 88
 JV0721
 JV0721  VERT ORDER      -  FIRST     CLASS II
 JV0721
 JV0721.The horizontal coordinates were scaled from a map and have
 JV0721.an estimated accuracy of +/- 6 seconds.
 JV0721
 JV0721.The orthometric height was determined by differential leveling and
 JV0721.adjusted by the NATIONAL GEODETIC SURVEY
 JV0721.in June 1991.
 JV0721
 JV0721.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0721.GEOID18 height accuracy estimate available here.
 JV0721
 JV0721.Click photographs - Photos may exist for this station.
 JV0721
 JV0721.The dynamic height is computed by dividing the NAVD 88
 JV0721.geopotential number by the normal gravity value computed on the
 JV0721.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0721.degrees latitude (g = 980.6199 gals.).
 JV0721
 JV0721.The modeled gravity was interpolated from observed gravity values.
 JV0721
 JV0721;                    North         East    Units  Estimated Accuracy
 JV0721;SPC MD       -   173,760.      422,860.      MT  (+/- 180 meters Scaled)
 JV0721
 JV0721_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ502439(NAD 83)
 JV0721
 JV0721                          SUPERSEDED SURVEY CONTROL
 JV0721
 JV0721  NGVD 29 (11/26/84)   21.629  (m)           70.96   (f) ADJUSTED    1 2
 JV0721
 JV0721.Superseded values are not recommended for survey control.
 JV0721
 JV0721.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0721.See file dsdata.pdf to determine how the superseded data were derived.
 JV0721
 JV0721_MARKER: B = BOLT
 JV0721_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0721_SP_SET: BRIDGE COPING
 JV0721_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0721
 JV0721  HISTORY     - Date     Condition        Report By
 JV0721  HISTORY     - 1903     MONUMENTED       BORR
 JV0721  HISTORY     - 1941     GOOD             CGS
 JV0721
 JV0721                          STATION DESCRIPTION
 JV0721
 JV0721'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0721'4.2 MI SE FROM ELLICOTT CITY.
 JV0721'IN BALTIMORE COUNTY, ABOUT 4.2 MILES SOUTHEAST ALONG THE
 JV0721'BALTIMORE AND OHIO RAILROAD FROM ELLICOTT CITY, HOWARD COUNTY,
 JV0721'AT BRIDGE 10 OVER AN OLD ROAD LEADING TO THE ABANDONED STATION AT
 JV0721'VINEYARD, IN THE TOP OF THE EAST END OF THE SOUTH COPING, AND
 JV0721'13.8 FEET SOUTH OF THE SOUTH RAIL OF THE EAST-BOUND TRACK.  A
 JV0721'COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1411 ***********************************************************************
 HV1411  DESIGNATION -  1017 WSSC
 HV1411  PID         -  HV1411
 HV1411  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1411  COUNTRY     -  US
 HV1411  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1411
 HV1411                         *CURRENT SURVEY CONTROL
 HV1411  ______________________________________________________________________
 HV1411* NAD 83(1986) POSITION- 38 57 50.     (N) 076 59 24.     (W)   SCALED
 HV1411* NAVD 88 ORTHO HEIGHT -    43.79  (+/-2cm)      143.7   (feet) VERTCON3
 HV1411  ______________________________________________________________________
 HV1411  GEOID HEIGHT    -        -32.047 (meters)                     GEOID18
 HV1411  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1411
 HV1411.The horizontal coordinates were scaled from a map and have
 HV1411.an estimated accuracy of +/- 6 seconds.
 HV1411
 HV1411.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1411.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1411
 HV1411.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1411.GEOID18 height accuracy estimate available here.
 HV1411
 HV1411.The vertical order pertains to the NGVD 29 superseded value.
 HV1411
 HV1411.Click photographs - Photos may exist for this station.
 HV1411
 HV1411;                    North         East    Units  Estimated Accuracy
 HV1411;SPC MD       -   144,000.      400,870.      MT  (+/- 180 meters Scaled)
 HV1411
 HV1411_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ275146(NAD 83)
 HV1411
 HV1411                          SUPERSEDED SURVEY CONTROL
 HV1411
 HV1411  NGVD 29 (11/26/84)   44.012  (m)          144.40   (f) ADJUSTED    2 0
 HV1411
 HV1411.Superseded values are not recommended for survey control.
 HV1411
 HV1411.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1411.See file dsdata.pdf to determine how the superseded data were derived.
 HV1411
 HV1411_MARKER: Z = SEE DESCRIPTION
 HV1411_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1411_SP_SET: CULVERT
 HV1411_STAMPING: WSSC 1017
 HV1411_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1411
 HV1411  HISTORY     - Date     Condition        Report By
 HV1411  HISTORY     - UNK      MONUMENTED       WSSC
 HV1411  HISTORY     - 1939     GOOD             WSSC
 HV1411
 HV1411                          STATION DESCRIPTION
 HV1411
 HV1411'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1411'0.2 MI N FROM CHILLUM.
 HV1411'ON RIGGS ROAD, 0.2 MILE NORTHEAST OF THE INTERSECTION OF CHILLUM
 HV1411'ROAD, 0.2 MILE SOUTHWEST OF RAY ROAD, ON THE SOUTH SIDE OF
 HV1411'RIGGS ROAD, AND IN THE HEADWALL OF A CONCRETE CULVERT. LAG
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4947 ***********************************************************************
 HV4947  DESIGNATION -  101=HALL
 HV4947  PID         -  HV4947
 HV4947  STATE/COUNTY-  MD/CHARLES
 HV4947  COUNTRY     -  US
 HV4947  USGS QUAD   -  MOUNT VERNON (2019)
 HV4947
 HV4947                         *CURRENT SURVEY CONTROL
 HV4947  ______________________________________________________________________
 HV4947* NAD 83(1993) POSITION- 38 41 10.09543(N) 077 05 59.05301(W)   ADJUSTED
 HV4947* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV4947  ______________________________________________________________________
 HV4947  GEOID HEIGHT    -        -32.412 (meters)                     GEOID18
 HV4947  LAPLACE CORR    -         -1.76  (seconds)                    DEFLEC18
 HV4947  HORZ ORDER      -  THIRD
 HV4947
 HV4947.The horizontal coordinates were established by classical geodetic methods
 HV4947.and adjusted by the National Geodetic Survey in November 1994.
 HV4947
 HV4947.The orthometric height was scaled from a topographic map.
 HV4947
 HV4947.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4947.GEOID18 height accuracy estimate available here.
 HV4947
 HV4947.Click photographs - Photos may exist for this station.
 HV4947
 HV4947.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4947
 HV4947. The following values were computed from the NAD 83(1993) position.
 HV4947
 HV4947;                    North         East     Units Scale Factor Converg.
 HV4947;SPC MD       -   113,170.003   391,322.496   MT  0.99995530   -0 03 45.4
 HV4947;SPC MD       -   371,291.92  1,283,863.89   sFT  0.99995530   -0 03 45.4
 HV4947;SPC VA N     - 2,114,089.163 3,621,822.895   MT  0.99994910   +0 52 26.1
 HV4947;SPC VA N     - 6,935,974.20 11,882,597.28   sFT  0.99994910   +0 52 26.1
 HV4947;UTM  18      - 4,284,040.105   317,370.533   MT  1.00001074   -1 18 46.1
 HV4947
 HV4947!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4947!SPC MD       -   1.00000482  x   0.99995530  =   0.99996012
 HV4947!SPC VA N     -   1.00000482  x   0.99994910  =   0.99995392
 HV4947!UTM  18      -   1.00000482  x   1.00001074  =   1.00001556
 HV4947
 HV4947:                Primary Azimuth Mark                     Grid Az
 HV4947:SPC MD       -  BRYAN 2                                  069 24 15.8
 HV4947:SPC VA N     -  BRYAN 2                                  068 28 04.3
 HV4947:UTM  18      -  BRYAN 2                                  070 39 16.5
 HV4947
 HV4947_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1737084040(NAD 83)
 HV4947
 HV4947|---------------------------------------------------------------------|
 HV4947| PID    Reference Object                     Distance      Geod. Az  |
 HV4947|                                                           dddmmss.s |
 HV4947| HV4911 CONCRETE RNG POST S MT VERNON       APPROX. 1.6 KM 0125031.0 |
 HV4947| HV4921 MT VERNON DOCK VANE ON CUPOLA       APPROX. 2.3 KM 0260613.6 |
 HV4947| HV4932 VANE ON MANSION W SHERIDAN PT       APPROX. 4.0 KM 0452644.2 |
 HV4947| HV4928 SHERIDAN PT WHITE HOUSE CHIM        APPROX. 4.2 KM 0491320.9 |
 HV4947| HV4916 FORT HUNT YELLOW WATER TANK         APPROX. 5.5 KM 0524142.0 |
 HV4947| HV4956 FT WASHINGTON HIGH WATER TANK       APPROX. 7.2 KM 0623326.4 |
 HV4947| HV4957 FT WASHINGTON LOW WATER TANK        APPROX. 7.2 KM 0623844.8 |
 HV4947| HV4946 BRYAN 2                             APPROX. 2.9 KM 0692030.4 |
 HV4947| HV4969 RANGE POST N OF MARSHALL DOCK       204.754 METERS 07632     |
 HV4947| DC6322 HALL RM                              14.520 METERS 18653     |
 HV4947| DC6323 101 RM                                3.340 METERS 27333     |
 HV4947| HV4914 DOGUE CR CONCRETE SEWER POST        APPROX. 1.9 KM 2771014.3 |
 HV4947|---------------------------------------------------------------------|
 HV4947
 HV4947                          SUPERSEDED SURVEY CONTROL
 HV4947
 HV4947  NAD 83(1991)-  38 41 10.09332(N)    077 05 59.05599(W) AD(       ) 3
 HV4947  NAD 83(1986)-  38 41 10.09410(N)    077 05 59.06810(W) AD(       ) 3
 HV4947  NAD 27      -  38 41 09.67300(N)    077 06 00.14900(W) AD(       ) 3
 HV4947
 HV4947.Superseded values are not recommended for survey control.
 HV4947
 HV4947.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4947.See file dsdata.pdf to determine how the superseded data were derived.
 HV4947
 HV4947_MARKER: DD = SURVEY DISK
 HV4947_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV4947_STAMPING: U.S.E.D. STATION 101
 HV4947_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4947
 HV4947  HISTORY     - Date     Condition        Report By
 HV4947  HISTORY     - 1928     MONUMENTED       USACE
 HV4947  HISTORY     - 1938     GOOD             CGS
 HV4947  HISTORY     - 1959     GOOD             CGS
 HV4947  HISTORY     - 1959     GOOD             CGS
 HV4947
 HV4947                          STATION DESCRIPTION
 HV4947
 HV4947'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1928 (CP)
 HV4947'STATION IS ON THE E SHORE OF POTOMAC RIVER AT N INSHORE END OF THE
 HV4947'DOCK AT MARSHALL HALL ON THE EDGE OF EARTH FILL AND IS THE
 HV4947'U.S.E.D. MARK NO.101.  MARK IS A BRASS DISK SET IN TOP OF AN
 HV4947'IRREGULAR BLOCK OF CONCRETE STAMPED U.S.E.D. STATION 101, WITH A
 HV4947'SMALL HOLE IN THE CENTER OF THE DISK.
 HV4947'
 HV4947'REFERENCE MARK IS A STANDARD BRONZE DISK SET IN CONCRETE.
 HV4947'
 HV4947'REFERENCE MARK (NO NUMBER) IS SE OF STATION CLOSE TO FENCE LINE
 HV4947'LEADING UP STAIRS TO MARSHALL HALL GROUNDS, PROJECTS SEVERAL
 HV4947'INCHES ABOVE THE SURFACE STAMPED HALL 1928.
 HV4947'
 HV4947'A PRECISE LEVEL BENCH MARK ON TOP OF THE BANK CLOSE TO THE N END
 HV4947'OF THE DANCE HALL WAS USED AS ANOTHER REFERENCE MARK.
 HV4947'
 HV4947'A THIRD REFERENCE MARK IS A BLOCK OF CONCRETE ITS TOP FLUSH WITH
 HV4947'THE SURFACE WITH AN IRON PIPE IN ITS CENTER, PROBABLY A
 HV4947'U.S. ENGINEERS REFERENCE MARK.
 HV4947'
 HV4947'HEIGHT OF SIGNAL ABOVE STATION MARK - 3.0 METERS.
 HV4947
 HV4947                          STATION RECOVERY (1938)
 HV4947
 HV4947'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV4947'STATION MARK AND REFERENCE MARK (NO NUMBER) RECOVERED.  THE BENCH
 HV4947'MARK USED AS A REFERENCE MARK IS STILL IN EXISTENCE BUT MINUS THE
 HV4947'BRONZE DISK.  THIS MARK IS TIDAL BENCH MARK NO.3, MARSHALL HALL,
 HV4947'AND IS DESCRIBED IN THE RECORDS OF THE DIVISION OF TIDES AND
 HV4947'CURRENTS.  REFERENCE MARK (U.S.E.) HAS BEEN WASHED OUT.
 HV4947
 HV4947                          STATION RECOVERY (1959)
 HV4947
 HV4947'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (RST)
 HV4947'STATION RECOVERED IN FAIR CONDITION.  U.S.C. AND G.S. REFERENCE
 HV4947'MARK FOUND IN GOOD CONDITION.  THE OTHER REFERENCE MARK AND BENCH
 HV4947'MARK WERE NOT FOUND AFTER A SEARCH OF AN HOUR OR MORE.  THE
 HV4947'RECOVERY NOTE BY T.M.P. JR. IN 1938 IS COMPLETE AND ADEQUATE.
 HV4947
 HV4947                          STATION RECOVERY (1959)
 HV4947
 HV4947'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV4947'STATION AND REFERENCE MARK (NO NUMBER) WERE RECOVERED.  STATION IS
 HV4947'BEING UNDERWASHED BY THE RIVER.  COMPLETE DESCRIPTION FOLLOWS--
 HV4947'
 HV4947'STATION IS ON THE EAST SHORE OF THE POTOMAC RIVER AT THE WEST
 HV4947'INSHORE END OF THE SMALL BOAT PIER AT MARSHALL HALL, MARYLAND,
 HV4947'ABOUT 5 FEET SOUTH OF CONCRETE RETAINING WALL AND 1 FOOT WEST OF
 HV4947'PIER.  STATION IS USED MARK NO 101 AND IS STAMPED USED STATION
 HV4947'101.  STATION IS NOW PROJECTING ABOUT 1 FOOT ABOVE GROUND DUE TO
 HV4947'BEING UNDERWASHED.
 HV4947'
 HV4947'REFERENCE MARK (NO NUMBER), STAMPED HALL, 1928, WAS FOUND IN
 HV4947'GOOD CONDITION.  IT IS SE OF THE STATION, CLOSE TO WALKWAY LEADING
 HV4947'UP BANK TO MARSHALL HALL GROUNDS, ABOUT 7 FEET SOUTH OF WALKWAY
 HV4947'AND 7 FEET NORTH OF EARTH BANK.
 HV4947'
 HV4947'A PRECISE LEVEL B.M. USED AS A R.M. HAS BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1412 ***********************************************************************
 HV1412  DESIGNATION -  1022 WSSC
 HV1412  PID         -  HV1412
 HV1412  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1412  COUNTRY     -  US
 HV1412  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1412
 HV1412                         *CURRENT SURVEY CONTROL
 HV1412  ______________________________________________________________________
 HV1412* NAD 83(1986) POSITION- 38 57 59.     (N) 076 59 16.     (W)   SCALED
 HV1412* NAVD 88 ORTHO HEIGHT -    46.95  (+/-2cm)      154.0   (feet) VERTCON3
 HV1412  ______________________________________________________________________
 HV1412  GEOID HEIGHT    -        -32.049 (meters)                     GEOID18
 HV1412  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1412
 HV1412.The horizontal coordinates were scaled from a map and have
 HV1412.an estimated accuracy of +/- 6 seconds.
 HV1412
 HV1412.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1412.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1412
 HV1412.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1412.GEOID18 height accuracy estimate available here.
 HV1412
 HV1412.The vertical order pertains to the NGVD 29 superseded value.
 HV1412
 HV1412.Click photographs - Photos may exist for this station.
 HV1412
 HV1412;                    North         East    Units  Estimated Accuracy
 HV1412;SPC MD       -   144,280.      401,060.      MT  (+/- 180 meters Scaled)
 HV1412
 HV1412_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ277149(NAD 83)
 HV1412
 HV1412                          SUPERSEDED SURVEY CONTROL
 HV1412
 HV1412  NGVD 29 (11/26/84)   47.173  (m)          154.77   (f) ADJUSTED    2 0
 HV1412
 HV1412.Superseded values are not recommended for survey control.
 HV1412
 HV1412.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1412.See file dsdata.pdf to determine how the superseded data were derived.
 HV1412
 HV1412_MARKER: Z = SEE DESCRIPTION
 HV1412_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1412_STAMPING: WSSC 1022
 HV1412_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1412+STABILITY: SURFACE MOTION
 HV1412
 HV1412  HISTORY     - Date     Condition        Report By
 HV1412  HISTORY     - UNK      MONUMENTED       WSSC
 HV1412  HISTORY     - 1939     GOOD             WSSC
 HV1412
 HV1412                          STATION DESCRIPTION
 HV1412
 HV1412'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1412'0.5 MI NE FROM CHILLUM.
 HV1412'ON RIGGS ROAD, ABOUT 200 FEET NORTHEAST OF RAY ROAD, 3
 HV1412'FEET NORTH OF AN OAK ON THE NORTHWEST SIDE OF RIGGS ROAD, AND
 HV1412'IN A CONCRETE POST. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2697 ***********************************************************************
 JV2697  DESIGNATION -  1027 WSSC
 JV2697  PID         -  JV2697
 JV2697  STATE/COUNTY-  MD/MONTGOMERY
 JV2697  COUNTRY     -  US
 JV2697  USGS QUAD   -  KENSINGTON (2016)
 JV2697
 JV2697                         *CURRENT SURVEY CONTROL
 JV2697  ______________________________________________________________________
 JV2697* NAD 83(1986) POSITION- 39 01 43.     (N) 077 04 17.     (W)   SCALED
 JV2697* NAVD 88 ORTHO HEIGHT -    90.287 (meters)      296.22  (feet) ADJUSTED
 JV2697  ______________________________________________________________________
 JV2697  GEOID HEIGHT    -        -31.880 (meters)                     GEOID18
 JV2697  DYNAMIC HEIGHT  -         90.238 (meters)      296.06  (feet) COMP
 JV2697  MODELED GRAVITY -    980,089.3   (mgal)                       NAVD 88
 JV2697
 JV2697  VERT ORDER      -  SECOND    CLASS 0
 JV2697
 JV2697.The horizontal coordinates were scaled from a map and have
 JV2697.an estimated accuracy of +/- 6 seconds.
 JV2697
 JV2697.The orthometric height was determined by differential leveling and
 JV2697.adjusted by the NATIONAL GEODETIC SURVEY
 JV2697.in June 1991.
 JV2697
 JV2697.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2697.GEOID18 height accuracy estimate available here.
 JV2697
 JV2697.Click photographs - Photos may exist for this station.
 JV2697
 JV2697.The dynamic height is computed by dividing the NAVD 88
 JV2697.geopotential number by the normal gravity value computed on the
 JV2697.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2697.degrees latitude (g = 980.6199 gals.).
 JV2697
 JV2697.The modeled gravity was interpolated from observed gravity values.
 JV2697
 JV2697;                    North         East    Units  Estimated Accuracy
 JV2697;SPC MD       -   151,190.      393,820.      MT  (+/- 180 meters Scaled)
 JV2697
 JV2697_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ206219(NAD 83)
 JV2697
 JV2697                          SUPERSEDED SURVEY CONTROL
 JV2697
 JV2697  NGVD 29 (11/26/84)   90.505  (m)          296.93   (f) ADJUSTED    2 0
 JV2697
 JV2697.Superseded values are not recommended for survey control.
 JV2697
 JV2697.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2697.See file dsdata.pdf to determine how the superseded data were derived.
 JV2697
 JV2697_MARKER: Z = SEE DESCRIPTION
 JV2697_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2697_SP_SET: CONCRETE WALK
 JV2697_STAMPING: WSSC 1027
 JV2697_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2697
 JV2697  HISTORY     - Date     Condition        Report By
 JV2697  HISTORY     - UNK      MONUMENTED       WSSC
 JV2697  HISTORY     - 1951     GOOD             CGS
 JV2697  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2697
 JV2697                          STATION DESCRIPTION
 JV2697
 JV2697'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2697'AT KENSINGTON.
 JV2697'AT KENSINGTON, MONTGOMERY COUNTY, IN THE SOUTH ANGLE OF THE
 JV2697'INTERSECTION OF ST. PAUL STREET AND OBERON STREET (FORMERLY ELM
 JV2697'AVENUE), AT THE HOUSE NUMBERED 31 ST. PAUL STREET, ON THE LEFT
 JV2697'SIDE (WHEN ENTERING) OF THE CONCRETE WALK LEADING TO THE FRONT
 JV2697'STEPS, AND JUST AT THE OUTWARD EDGE OF THE BOTTOM STEP.  (THE
 JV2697'STEP OVERHANGS THE BENCH MARK SLIGHTLY.)  A WASHINGTON SUBURBAN
 JV2697'SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED WSSC 1027 AND
 JV2697'SET IN THE CONCRETE WALK.
 JV2697
 JV2697                          STATION RECOVERY (1987)
 JV2697
 JV2697'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2697'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2167 ***********************************************************************
 JV2167  DESIGNATION -  1033
 JV2167  PID         -  JV2167
 JV2167  STATE/COUNTY-  MD/MONTGOMERY
 JV2167  COUNTRY     -  US
 JV2167  USGS QUAD   -  KENSINGTON (2016)
 JV2167
 JV2167                         *CURRENT SURVEY CONTROL
 JV2167  ______________________________________________________________________
 JV2167* NAD 83(1986) POSITION- 39 01 54.     (N) 077 04 57.     (W)   SCALED
 JV2167* NAVD 88 ORTHO HEIGHT -    85.623 (meters)      280.91  (feet) ADJUSTED
 JV2167  ______________________________________________________________________
 JV2167  GEOID HEIGHT    -        -31.861 (meters)                     GEOID18
 JV2167  DYNAMIC HEIGHT  -         85.577 (meters)      280.76  (feet) COMP
 JV2167  MODELED GRAVITY -    980,091.0   (mgal)                       NAVD 88
 JV2167
 JV2167  VERT ORDER      -  FIRST     CLASS II
 JV2167
 JV2167.The horizontal coordinates were scaled from a map and have
 JV2167.an estimated accuracy of +/- 6 seconds.
 JV2167
 JV2167.The orthometric height was determined by differential leveling and
 JV2167.adjusted by the NATIONAL GEODETIC SURVEY
 JV2167.in June 1991.
 JV2167
 JV2167.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2167.GEOID18 height accuracy estimate available here.
 JV2167
 JV2167.Click photographs - Photos may exist for this station.
 JV2167
 JV2167.The dynamic height is computed by dividing the NAVD 88
 JV2167.geopotential number by the normal gravity value computed on the
 JV2167.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2167.degrees latitude (g = 980.6199 gals.).
 JV2167
 JV2167.The modeled gravity was interpolated from observed gravity values.
 JV2167
 JV2167;                    North         East    Units  Estimated Accuracy
 JV2167;SPC MD       -   151,530.      392,860.      MT  (+/- 180 meters Scaled)
 JV2167
 JV2167_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ197223(NAD 83)
 JV2167
 JV2167                          SUPERSEDED SURVEY CONTROL
 JV2167
 JV2167  NGVD 29 (11/26/84)   85.843  (m)          281.64   (f) ADJUSTED    1 2
 JV2167
 JV2167.Superseded values are not recommended for survey control.
 JV2167
 JV2167.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2167.See file dsdata.pdf to determine how the superseded data were derived.
 JV2167
 JV2167_MARKER: B = BOLT
 JV2167_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV2167+WITH SETTING: PAVEMENT
 JV2167_SP_SET: SIGNAL BASE
 JV2167_STAMPING: WSSC 1033
 JV2167_MARK LOGO: WSSC
 JV2167_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2167+STABILITY: SURFACE MOTION
 JV2167
 JV2167  HISTORY     - Date     Condition        Report By
 JV2167  HISTORY     - UNK      MONUMENTED       WSSC
 JV2167  HISTORY     - 1951     GOOD             CGS
 JV2167
 JV2167                          STATION DESCRIPTION
 JV2167
 JV2167'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2167'0.8 MI NW FROM KENSINGTON.
 JV2167'0.8 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2167'THE STATION AT KENSINGTON, AT SIGNAL W 11+35, IN THE NORTHEAST
 JV2167'CORNER OF THE CONCRETE BASE, 9 FEET SOUTHWEST OF THE CENTER LINE
 JV2167'OF THE SOUTH-BOUND TRACK, AND 8 INCHES ABOVE THE LEVEL OF THE
 JV2167'RAILS.  A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD COPPER
 JV2167'BOLT AND WASHER.  RECOVERED BY MEANS OF DESCRIPTION ON PAGE 1 OF
 JV2167'SILVER SPRING, MARYLAND, TO HARPERS FERRY, WEST VIRGINIA (49 MD.).
 JV2167'SIGNAL NUMBER IS E 11+35 INSTEAD OF W 11+35 AS STATED IN DESCRIPTION
 JV2167'REFERRED TO ABOVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1110 ***********************************************************************
 HV1110  DESIGNATION -  1039
 HV1110  PID         -  HV1110
 HV1110  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1110  COUNTRY     -  US
 HV1110  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1110
 HV1110                         *CURRENT SURVEY CONTROL
 HV1110  ______________________________________________________________________
 HV1110* NAD 83(1986) POSITION- 38 48 48.     (N) 076 52 14.     (W)   SCALED
 HV1110* NAVD 88 ORTHO HEIGHT -    83.678 (meters)      274.53  (feet) ADJUSTED
 HV1110  ______________________________________________________________________
 HV1110  GEOID HEIGHT    -        -32.552 (meters)                     GEOID18
 HV1110  DYNAMIC HEIGHT  -         83.631 (meters)      274.38  (feet) COMP
 HV1110  MODELED GRAVITY -    980,068.9   (mgal)                       NAVD 88
 HV1110
 HV1110  VERT ORDER      -  SECOND    CLASS 0
 HV1110
 HV1110.The horizontal coordinates were scaled from a map and have
 HV1110.an estimated accuracy of +/- 6 seconds.
 HV1110
 HV1110.The orthometric height was determined by differential leveling and
 HV1110.adjusted by the NATIONAL GEODETIC SURVEY
 HV1110.in June 1991.
 HV1110
 HV1110.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1110.GEOID18 height accuracy estimate available here.
 HV1110
 HV1110.Click photographs - Photos may exist for this station.
 HV1110
 HV1110.The dynamic height is computed by dividing the NAVD 88
 HV1110.geopotential number by the normal gravity value computed on the
 HV1110.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1110.degrees latitude (g = 980.6199 gals.).
 HV1110
 HV1110.The modeled gravity was interpolated from observed gravity values.
 HV1110
 HV1110;                    North         East    Units  Estimated Accuracy
 HV1110;SPC MD       -   127,290.      411,240.      MT  (+/- 180 meters Scaled)
 HV1110
 HV1110_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH375977(NAD 83)
 HV1110
 HV1110                          SUPERSEDED SURVEY CONTROL
 HV1110
 HV1110  NGVD 29 (05/01/89)   83.919  (m)          275.32   (f) ADJUSTED    2 0
 HV1110  NGVD 29 (??/??/87)   83.946  (m)          275.41   (f) SUPERSEDED  2 0
 HV1110
 HV1110.Superseded values are not recommended for survey control.
 HV1110
 HV1110.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1110.See file dsdata.pdf to determine how the superseded data were derived.
 HV1110
 HV1110_MARKER: DD = SURVEY DISK
 HV1110_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1110_STAMPING: 1039
 HV1110_MARK LOGO: USACE
 HV1110_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1110+STABILITY: SURFACE MOTION
 HV1110
 HV1110  HISTORY     - Date     Condition        Report By
 HV1110  HISTORY     - UNK      MONUMENTED       USACE
 HV1110  HISTORY     - 1942     GOOD             CGS
 HV1110
 HV1110                          STATION DESCRIPTION
 HV1110
 HV1110'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1110'0.9 MI W FROM MEADOWS.
 HV1110'0.9 MILE WEST ALONG THE CAMP SPRINGS ROAD FROM MEADOWS, 54.3
 HV1110'FEET NORTHEAST ACROSS THE ROAD FROM POWER POLE 89023, 34 FEET
 HV1110'NORTHEAST OF THE CENTER OF THE JUNCTION OF A FARM ROAD LEADING
 HV1110'SOUTH, 19.5 FEET NORTH OF THE CENTERLINE OF THE MAIN ROAD, 15.5
 HV1110'FEET EAST OF A TELEPHONE POLE, IN THE WOODS ON THE NORTH SIDE
 HV1110'OF THE ROAD, AND ABOUT 3 FEET HIGHER THAN THE PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2775 ***********************************************************************
 JV2775  DESIGNATION -  1043 WSSC
 JV2775  PID         -  JV2775
 JV2775  STATE/COUNTY-  MD/MONTGOMERY
 JV2775  COUNTRY     -  US
 JV2775  USGS QUAD   -  KENSINGTON (2016)
 JV2775
 JV2775                         *CURRENT SURVEY CONTROL
 JV2775  ______________________________________________________________________
 JV2775* NAD 83(1986) POSITION- 39 02 17.     (N) 077 03 03.     (W)   SCALED
 JV2775* NAVD 88 ORTHO HEIGHT -   133.85  (+/-2cm)      439.1   (feet) VERTCON3
 JV2775  ______________________________________________________________________
 JV2775  GEOID HEIGHT    -        -31.905 (meters)                     GEOID18
 JV2775  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2775
 JV2775.The horizontal coordinates were scaled from a map and have
 JV2775.an estimated accuracy of +/- 6 seconds.
 JV2775
 JV2775.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2775.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2775
 JV2775.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2775.GEOID18 height accuracy estimate available here.
 JV2775
 JV2775.The vertical order pertains to the NGVD 29 superseded value.
 JV2775
 JV2775.Click photographs - Photos may exist for this station.
 JV2775
 JV2775;                    North         East    Units  Estimated Accuracy
 JV2775;SPC MD       -   152,230.      395,600.      MT  (+/- 180 meters Scaled)
 JV2775
 JV2775_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ225230(NAD 83)
 JV2775
 JV2775                          SUPERSEDED SURVEY CONTROL
 JV2775
 JV2775  NGVD 29 (11/26/84)  134.069  (m)          439.86   (f) ADJUSTED    2 0
 JV2775
 JV2775.Superseded values are not recommended for survey control.
 JV2775
 JV2775.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2775.See file dsdata.pdf to determine how the superseded data were derived.
 JV2775
 JV2775_MARKER: Z = SEE DESCRIPTION
 JV2775_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2775_SP_SET: BUILDING
 JV2775_STAMPING: WSSC 1043
 JV2775_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2775
 JV2775  HISTORY     - Date     Condition        Report By
 JV2775  HISTORY     - UNK      MONUMENTED       WSSC
 JV2775  HISTORY     - 1939     GOOD             WSSC
 JV2775
 JV2775                          STATION DESCRIPTION
 JV2775
 JV2775'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2775'0.2 MI S FROM WHEATON.
 JV2775'ON GEORGIA AVENUE (STATE HIGHWAY 97), ON THE EAST SIDE OF THE
 JV2775'HIGHWAY, AT A FRAME HOUSE, AND IN THE SOUTHWEST CORNER (CORNER
 JV2775'BOARD). LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3533 ***********************************************************************
 JV3533  DESIGNATION -  1044
 JV3533  PID         -  JV3533
 JV3533  STATE/COUNTY-  MD/FREDERICK
 JV3533  COUNTRY     -  US
 JV3533  USGS QUAD   -  MYERSVILLE (2016)
 JV3533
 JV3533                         *CURRENT SURVEY CONTROL
 JV3533  ______________________________________________________________________
 JV3533* NAD 83(1986) POSITION- 39 34 28.     (N) 077 33 06.     (W)   SCALED
 JV3533* NAVD 88 ORTHO HEIGHT -   318.028 (meters)     1043.40  (feet) ADJUSTED
 JV3533  ______________________________________________________________________
 JV3533  GEOID HEIGHT    -        -33.308 (meters)                     GEOID18
 JV3533  DYNAMIC HEIGHT  -        317.845 (meters)     1042.80  (feet) COMP
 JV3533  MODELED GRAVITY -    980,043.0   (mgal)                       NAVD 88
 JV3533
 JV3533  VERT ORDER      -  SECOND    CLASS 0
 JV3533
 JV3533.The horizontal coordinates were scaled from a map and have
 JV3533.an estimated accuracy of +/- 6 seconds.
 JV3533
 JV3533.The orthometric height was determined by differential leveling and
 JV3533.adjusted by the NATIONAL GEODETIC SURVEY
 JV3533.in June 1991.
 JV3533
 JV3533.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3533.GEOID18 height accuracy estimate available here.
 JV3533
 JV3533.Click photographs - Photos may exist for this station.
 JV3533
 JV3533.The dynamic height is computed by dividing the NAVD 88
 JV3533.geopotential number by the normal gravity value computed on the
 JV3533.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3533.degrees latitude (g = 980.6199 gals.).
 JV3533
 JV3533.The modeled gravity was interpolated from observed gravity values.
 JV3533
 JV3533;                    North         East    Units  Estimated Accuracy
 JV3533;SPC MD       -   211,920.      352,600.      MT  (+/- 180 meters Scaled)
 JV3533
 JV3533_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ808836(NAD 83)
 JV3533
 JV3533                          SUPERSEDED SURVEY CONTROL
 JV3533
 JV3533  NGVD 29 (11/26/84)  318.221  (m)         1044.03   (f) ADJUSTED    2 0
 JV3533
 JV3533.Superseded values are not recommended for survey control.
 JV3533
 JV3533.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3533.See file dsdata.pdf to determine how the superseded data were derived.
 JV3533
 JV3533_MARKER: DD = SURVEY DISK
 JV3533_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV3533_SP_SET: CURB
 JV3533_STAMPING: 1044 MD
 JV3533_MARK LOGO: USGS
 JV3533_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3533
 JV3533  HISTORY     - Date     Condition        Report By
 JV3533  HISTORY     - 1908     MONUMENTED       USGS
 JV3533  HISTORY     - 1942     GOOD             CGS
 JV3533  HISTORY     - 20100904 MARK NOT FOUND   GEOCAC
 JV3533
 JV3533                          STATION DESCRIPTION
 JV3533
 JV3533'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3533'AT WOLFSVILLE.
 JV3533'AT WOLFSVILLE, FREDERICK COUNTY, ON STATE HIGHWAY 17, 60.6
 JV3533'FEET NORTH OF THE NORTHEAST CORNER OF A TWO-SOTRY WHITE STUCCO
 JV3533'HOUSE, AT A DIRT-ROAD INTERSECTION, 35.2 FEET SOUTHWEST OF THE
 JV3533'CENTER LINE OF THE HIGHWAY, 23.6 FEET WEST OF THE CENTER OF THE
 JV3533'INTERSECTION, 36.8 FEET SOUTH OF A 22-INCH PINE TREE IN THE
 JV3533'SOUTHEAST FACE OF THE NORTHWEST CURBSTONE, AND ABOUT 1 FOOT
 JV3533'ABOVE THE GROUND.  A UNITED STATES GEOLOGICAL SURVEY STANDARD
 JV3533'DISK, STAMPED 1044 MD AND SET VERTICALLY.  NOTE-- THIS BENCH MARK
 JV3533'HAS BEEN BEATEN BADLY.
 JV3533
 JV3533                          STATION RECOVERY (2010)
 JV3533
 JV3533'RECOVERY NOTE BY GEOCACHING 2010 (DPB)
 JV3533'MARK WAS REPORTED AS DESTROYED IN 1974. SEE  JV3534  1044 USGS RESET
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3534 ***********************************************************************
 JV3534  DESIGNATION -  1044 RESET
 JV3534  PID         -  JV3534
 JV3534  STATE/COUNTY-  MD/FREDERICK
 JV3534  COUNTRY     -  US
 JV3534  USGS QUAD   -  MYERSVILLE (2016)
 JV3534
 JV3534                         *CURRENT SURVEY CONTROL
 JV3534  ______________________________________________________________________
 JV3534* NAD 83(1986) POSITION- 39 34 26.67   (N) 077 33 04.29   (W)   HD_HELD1
 JV3534* NAVD 88 ORTHO HEIGHT -   317.11  (+/-2cm)     1040.4   (feet) VERTCON3
 JV3534  ______________________________________________________________________
 JV3534  GEOID HEIGHT    -        -33.305 (meters)                     GEOID18
 JV3534  VERT ORDER      -  THIRD (See Below)
 JV3534
 JV3534.The horizontal coordinates were determined by differentially corrected
 JV3534.hand held GPS observations or other comparable positioning techniques
 JV3534.and have an estimated accuracy of +/- 3 meters.
 JV3534
 JV3534.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3534.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3534
 JV3534.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3534.GEOID18 height accuracy estimate available here.
 JV3534
 JV3534.The vertical order pertains to the NGVD 29 superseded value.
 JV3534
 JV3534.Click photographs - Photos may exist for this station.
 JV3534
 JV3534;                    North         East    Units  Estimated Accuracy
 JV3534;SPC MD       -   211,882.3     352,639.6     MT  (+/- 3 meters HH1 GPS) 
 JV3534
 JV3534_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8087083594(NAD 83)
 JV3534
 JV3534                          SUPERSEDED SURVEY CONTROL
 JV3534
 JV3534  NGVD 29 (??/??/??)  317.31   (m)         1041.0    (f) RESET       3  
 JV3534
 JV3534.Superseded values are not recommended for survey control.
 JV3534
 JV3534.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3534.See file dsdata.pdf to determine how the superseded data were derived.
 JV3534
 JV3534_MARKER: DV = VERTICAL CONTROL DISK
 JV3534_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV3534_SP_SET: STEP
 JV3534_STAMPING: 1044 USGS REST 1974
 JV3534_MARK LOGO: NGS
 JV3534_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3534_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3534+SATELLITE: SATELLITE OBSERVATIONS - April 22, 2020
 JV3534
 JV3534  HISTORY     - Date     Condition        Report By
 JV3534  HISTORY     - 1974     MONUMENTED       NGS
 JV3534  HISTORY     - 20100904 GOOD             GEOCAC
 JV3534  HISTORY     - 20200422 GOOD             WSRR
 JV3534
 JV3534                          STATION DESCRIPTION
 JV3534
 JV3534'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
 JV3534'IN WOLFSVILLE.
 JV3534'THE MARK IS LOCATED ABOUT 12 MILES NORTHWEST OF FREDERICK, 10
 JV3534'MILES EAST-SOUTHEAST OF HAGERSTOWN AND IN THE SMALL TOWN OF
 JV3534'WOLFSVILLE.  IT IS 150 FEET SOUTH-SOUTHEAST OF THE INTERSECTION OF
 JV3534'STATE HIGHWAY 153 AND WOLFSVILLE ROAD WHICH IS THE MAIN CROSSROADS
 JV3534'IN THE SMALL TOWN OF WOLFSVILLE.  IT IS A STANDARD BENCH MARK
 JV3534'DISK STAMPED 1044 USGS RESET 1974, CEMENTED IN A DRILL HOLE IN
 JV3534'THE CONCRETE STEPS FOR THE MOST NORTHWEST ENTRANCE FOR THE SALEM
 JV3534'UNITED METHODISTS CHURCH.  IT IS 42 FEET EAST OF THE CENTER OF
 JV3534'STATE HIGHWAY 153, 18 FEET SOUTHEAST OF A 48-INCH MAPLE TREE,
 JV3534'2.5 FEET NORTHWEST OF THE CENTER OF THE ENTRANCE TO THE CHURCH
 JV3534'AND 0.5 FOOT SOUTH OF THE NORTH EDGE OF THE STEP.
 JV3534
 JV3534                          STATION RECOVERY (2010)
 JV3534
 JV3534'RECOVERY NOTE BY GEOCACHING 2010 (DPB)
 JV3534'N 39 34.444   W  77 33.070
 JV3534
 JV3534                          STATION RECOVERY (2020)
 JV3534
 JV3534'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV3534'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1109 ***********************************************************************
 HV1109  DESIGNATION -  1045
 HV1109  PID         -  HV1109
 HV1109  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1109  COUNTRY     -  US
 HV1109  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1109
 HV1109                         *CURRENT SURVEY CONTROL
 HV1109  ______________________________________________________________________
 HV1109* NAD 83(1986) POSITION- 38 48 51.     (N) 076 51 37.     (W)   SCALED
 HV1109* NAVD 88 ORTHO HEIGHT -    85.592 (meters)      280.81  (feet) ADJUSTED
 HV1109  ______________________________________________________________________
 HV1109  GEOID HEIGHT    -        -32.579 (meters)                     GEOID18
 HV1109  DYNAMIC HEIGHT  -         85.544 (meters)      280.66  (feet) COMP
 HV1109  MODELED GRAVITY -    980,069.1   (mgal)                       NAVD 88
 HV1109
 HV1109  VERT ORDER      -  SECOND    CLASS 0
 HV1109
 HV1109.The horizontal coordinates were scaled from a map and have
 HV1109.an estimated accuracy of +/- 6 seconds.
 HV1109
 HV1109.The orthometric height was determined by differential leveling and
 HV1109.adjusted by the NATIONAL GEODETIC SURVEY
 HV1109.in June 1991.
 HV1109
 HV1109.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1109.GEOID18 height accuracy estimate available here.
 HV1109
 HV1109.Click photographs - Photos may exist for this station.
 HV1109
 HV1109.The dynamic height is computed by dividing the NAVD 88
 HV1109.geopotential number by the normal gravity value computed on the
 HV1109.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1109.degrees latitude (g = 980.6199 gals.).
 HV1109
 HV1109.The modeled gravity was interpolated from observed gravity values.
 HV1109
 HV1109;                    North         East    Units  Estimated Accuracy
 HV1109;SPC MD       -   127,390.      412,140.      MT  (+/- 180 meters Scaled)
 HV1109
 HV1109_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH384977(NAD 83)
 HV1109
 HV1109                          SUPERSEDED SURVEY CONTROL
 HV1109
 HV1109  NGVD 29 (05/01/89)   85.833  (m)          281.60   (f) ADJUSTED    2 0
 HV1109  NGVD 29 (??/??/87)   85.861  (m)          281.70   (f) SUPERSEDED  2 0
 HV1109
 HV1109.Superseded values are not recommended for survey control.
 HV1109
 HV1109.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1109.See file dsdata.pdf to determine how the superseded data were derived.
 HV1109
 HV1109_MARKER: DD = SURVEY DISK
 HV1109_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1109_STAMPING: 1045
 HV1109_MARK LOGO: USACE
 HV1109_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1109+STABILITY: SURFACE MOTION
 HV1109
 HV1109  HISTORY     - Date     Condition        Report By
 HV1109  HISTORY     - UNK      MONUMENTED       USACE
 HV1109  HISTORY     - 1942     GOOD             CGS
 HV1109
 HV1109                          STATION DESCRIPTION
 HV1109
 HV1109'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1109'0.3 MI W FROM MEADOWS.
 HV1109'0.3 MILE WEST ALONG THE CAMP SPRINGS ROAD FROM MEADOWS, 170 FEET
 HV1109'EAST OF A TWO-STORY WHITE HOUSE ON THE NORTH SIDE OF THE ROAD,
 HV1109'53.7 FEET NORTHEAST OF POWER POLE 89006, 34.8 FEET EAST OF A
 HV1109'TELEPHONE POLE, 18 FEET NORTH OF THE CENTERLINE OF THE ROAD,
 HV1109'3 FEET NORTH OF A FENCE LINE, AND ABOUT 2 FEET HIGHER THAN THE
 HV1109'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1105 ***********************************************************************
 HV1105  DESIGNATION -  1048
 HV1105  PID         -  HV1105
 HV1105  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1105  COUNTRY     -  US
 HV1105  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1105
 HV1105                         *CURRENT SURVEY CONTROL
 HV1105  ______________________________________________________________________
 HV1105* NAD 83(1986) POSITION- 38 49 27.     (N) 076 51 31.     (W)   SCALED
 HV1105* NAVD 88 ORTHO HEIGHT -    80.987 (meters)      265.70  (feet) ADJUSTED
 HV1105  ______________________________________________________________________
 HV1105  GEOID HEIGHT    -        -32.565 (meters)                     GEOID18
 HV1105  DYNAMIC HEIGHT  -         80.942 (meters)      265.56  (feet) COMP
 HV1105  MODELED GRAVITY -    980,070.3   (mgal)                       NAVD 88
 HV1105
 HV1105  VERT ORDER      -  SECOND    CLASS 0
 HV1105
 HV1105.The horizontal coordinates were scaled from a map and have
 HV1105.an estimated accuracy of +/- 6 seconds.
 HV1105
 HV1105.The orthometric height was determined by differential leveling and
 HV1105.adjusted by the NATIONAL GEODETIC SURVEY
 HV1105.in June 1991.
 HV1105
 HV1105.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1105.GEOID18 height accuracy estimate available here.
 HV1105
 HV1105.Click photographs - Photos may exist for this station.
 HV1105
 HV1105.The dynamic height is computed by dividing the NAVD 88
 HV1105.geopotential number by the normal gravity value computed on the
 HV1105.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1105.degrees latitude (g = 980.6199 gals.).
 HV1105
 HV1105.The modeled gravity was interpolated from observed gravity values.
 HV1105
 HV1105;                    North         East    Units  Estimated Accuracy
 HV1105;SPC MD       -   128,500.      412,280.      MT  (+/- 180 meters Scaled)
 HV1105
 HV1105_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH386989(NAD 83)
 HV1105
 HV1105                          SUPERSEDED SURVEY CONTROL
 HV1105
 HV1105  NGVD 29 (05/01/89)   81.228  (m)          266.50   (f) ADJUSTED    2 0
 HV1105  NGVD 29 (??/??/87)   81.258  (m)          266.59   (f) SUPERSEDED  2 0
 HV1105
 HV1105.Superseded values are not recommended for survey control.
 HV1105
 HV1105.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1105.See file dsdata.pdf to determine how the superseded data were derived.
 HV1105
 HV1105_MARKER: DD = SURVEY DISK
 HV1105_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1105_STAMPING: 1048
 HV1105_MARK LOGO: USACE
 HV1105_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1105+STABILITY: SURFACE MOTION
 HV1105
 HV1105  HISTORY     - Date     Condition        Report By
 HV1105  HISTORY     - UNK      MONUMENTED       USACE
 HV1105  HISTORY     - 1942     GOOD             CGS
 HV1105  HISTORY     - 1971     MARK NOT FOUND   USACE
 HV1105
 HV1105                          STATION DESCRIPTION
 HV1105
 HV1105'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1105'0.9 MI S FROM FORESTVILLE.
 HV1105'0.9 MILE SOUTH ALONG STATE HIGHWAY 4 FROM THE FIRE STATION AT
 HV1105'FORESTVILLE, 66.5 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE
 HV1105'GILBERT CONCRETE-BLOCK SERVICE STATION, 29.5 FEET SOUTHEAST OF THE
 HV1105'CENTERLINE OF A NARROW DIRT ROAD LEADING SOUTHWEST, 14.8 FEET
 HV1105'WEST OF THE CENTERLINE OF THE HIGHWAY.  5.4 FEET EAST OF A CABLE
 HV1105'POLE, AND ABOUT 6 INCHES LOWER THAN THE PAVEMENT.
 HV1105
 HV1105                          STATION RECOVERY (1971)
 HV1105
 HV1105'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1971
 HV1105'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1104 ***********************************************************************
 HV1104  DESIGNATION -  1050
 HV1104  PID         -  HV1104
 HV1104  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1104  COUNTRY     -  US
 HV1104  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1104
 HV1104                         *CURRENT SURVEY CONTROL
 HV1104  ______________________________________________________________________
 HV1104* NAD 83(1986) POSITION- 38 49 42.     (N) 076 51 32.     (W)   SCALED
 HV1104* NAVD 88 ORTHO HEIGHT -    80.356 (meters)      263.63  (feet) ADJUSTED
 HV1104  ______________________________________________________________________
 HV1104  GEOID HEIGHT    -        -32.557 (meters)                     GEOID18
 HV1104  DYNAMIC HEIGHT  -         80.312 (meters)      263.49  (feet) COMP
 HV1104  MODELED GRAVITY -    980,070.7   (mgal)                       NAVD 88
 HV1104
 HV1104  VERT ORDER      -  SECOND    CLASS 0
 HV1104
 HV1104.The horizontal coordinates were scaled from a map and have
 HV1104.an estimated accuracy of +/- 6 seconds.
 HV1104
 HV1104.The orthometric height was determined by differential leveling and
 HV1104.adjusted by the NATIONAL GEODETIC SURVEY
 HV1104.in June 1991.
 HV1104
 HV1104.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1104.GEOID18 height accuracy estimate available here.
 HV1104
 HV1104.Click photographs - Photos may exist for this station.
 HV1104
 HV1104.The dynamic height is computed by dividing the NAVD 88
 HV1104.geopotential number by the normal gravity value computed on the
 HV1104.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1104.degrees latitude (g = 980.6199 gals.).
 HV1104
 HV1104.The modeled gravity was interpolated from observed gravity values.
 HV1104
 HV1104;                    North         East    Units  Estimated Accuracy
 HV1104;SPC MD       -   128,960.      412,250.      MT  (+/- 180 meters Scaled)
 HV1104
 HV1104_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH386993(NAD 83)
 HV1104
 HV1104                          SUPERSEDED SURVEY CONTROL
 HV1104
 HV1104  NGVD 29 (05/01/89)   80.598  (m)          264.43   (f) ADJUSTED    2 0
 HV1104  NGVD 29 (??/??/87)   80.628  (m)          264.53   (f) SUPERSEDED  2 0
 HV1104
 HV1104.Superseded values are not recommended for survey control.
 HV1104
 HV1104.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1104.See file dsdata.pdf to determine how the superseded data were derived.
 HV1104
 HV1104_MARKER: DD = SURVEY DISK
 HV1104_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1104_STAMPING: 1050
 HV1104_MARK LOGO: USACE
 HV1104_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1104+STABILITY: SURFACE MOTION
 HV1104
 HV1104  HISTORY     - Date     Condition        Report By
 HV1104  HISTORY     - UNK      MONUMENTED       USACE
 HV1104  HISTORY     - 1942     GOOD             CGS
 HV1104  HISTORY     - 1971     MARK NOT FOUND   USACE
 HV1104
 HV1104                          STATION DESCRIPTION
 HV1104
 HV1104'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1104'0.6 MI S FROM FORESTVILLE.
 HV1104'0.65 MILE SOUTH ALONG STATE HIGHWAY 4 FROM THE FIRE STATION AT
 HV1104'FORESTVILLE, 175 FEET NORTHWEST ACROSS THE HIGHWAY FROM THE
 HV1104'NORTHWEST CORNER OF A SMALL WOODED AREA, 88.5 FEET SOUTHWEST
 HV1104'ACROSS THE HIGHWAY FROM THREE LARGE SIGNBOARDS, 34 FEET DIRECTLY
 HV1104'WEST OF POWER POLE 87161, 19.4 FEET WEST OF THE CENTERLINE OF
 HV1104'THE HIGHWAY, AND 4 FEET SOUTH OF A CABLE POLE.
 HV1104
 HV1104                          STATION RECOVERY (1971)
 HV1104
 HV1104'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1971
 HV1104'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1432 ***********************************************************************
 HV1432  DESIGNATION -  1050 WSSC
 HV1432  PID         -  HV1432
 HV1432  STATE/COUNTY-  MD/MONTGOMERY
 HV1432  COUNTRY     -  US
 HV1432  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1432
 HV1432                         *CURRENT SURVEY CONTROL
 HV1432  ______________________________________________________________________
 HV1432* NAD 83(1986) POSITION- 38 58 44.     (N) 076 59 32.     (W)   SCALED
 HV1432* NAVD 88 ORTHO HEIGHT -    48.56  (+/-2cm)      159.3   (feet) VERTCON3
 HV1432  ______________________________________________________________________
 HV1432  GEOID HEIGHT    -        -32.034 (meters)                     GEOID18
 HV1432  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1432
 HV1432.The horizontal coordinates were scaled from a map and have
 HV1432.an estimated accuracy of +/- 6 seconds.
 HV1432
 HV1432.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1432.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1432
 HV1432.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1432.GEOID18 height accuracy estimate available here.
 HV1432
 HV1432.The vertical order pertains to the NGVD 29 superseded value.
 HV1432
 HV1432.Click photographs - Photos may exist for this station.
 HV1432
 HV1432;                    North         East    Units  Estimated Accuracy
 HV1432;SPC MD       -   145,660.      400,670.      MT  (+/- 180 meters Scaled)
 HV1432
 HV1432_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ274163(NAD 83)
 HV1432
 HV1432                          SUPERSEDED SURVEY CONTROL
 HV1432
 HV1432  NGVD 29 (11/26/84)   48.773  (m)          160.02   (f) ADJUSTED    2 0
 HV1432
 HV1432.Superseded values are not recommended for survey control.
 HV1432
 HV1432.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1432.See file dsdata.pdf to determine how the superseded data were derived.
 HV1432
 HV1432_MARKER: Z = SEE DESCRIPTION
 HV1432_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1432_SP_SET: PROPERTY STONE
 HV1432_STAMPING: WSSC 1050
 HV1432_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1432
 HV1432  HISTORY     - Date     Condition        Report By
 HV1432  HISTORY     - UNK      MONUMENTED       WSSC
 HV1432  HISTORY     - 1939     GOOD             WSSC
 HV1432
 HV1432                          STATION DESCRIPTION
 HV1432
 HV1432'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1432'IN TAKOMA PARK.
 HV1432'AT THE INTERSECTION OF NEW HAMPSHIRE AVENUE AND LARCH AVENUE,
 HV1432'ON THE WEST SIDE OF NEW HAMPSHIRE AVENUE, AND IN THE CENTER OF
 HV1432'A PROPERTY STONE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1209 ***********************************************************************
 JV1209  DESIGNATION -  1053 C OF B
 JV1209  PID         -  JV1209
 JV1209  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1209  COUNTRY     -  US
 JV1209  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1209
 JV1209                         *CURRENT SURVEY CONTROL
 JV1209  ______________________________________________________________________
 JV1209* NAD 83(1986) POSITION- 39 19 35.     (N) 076 38 16.     (W)   SCALED
 JV1209* NAVD 88 ORTHO HEIGHT -    41.962 (meters)      137.67  (feet) ADJUSTED
 JV1209  ______________________________________________________________________
 JV1209  GEOID HEIGHT    -        -32.583 (meters)                     GEOID18
 JV1209  DYNAMIC HEIGHT  -         41.940 (meters)      137.60  (feet) COMP
 JV1209  MODELED GRAVITY -    980,103.9   (mgal)                       NAVD 88
 JV1209
 JV1209  VERT ORDER      -  SECOND    CLASS 0
 JV1209
 JV1209.The horizontal coordinates were scaled from a map and have
 JV1209.an estimated accuracy of +/- 6 seconds.
 JV1209
 JV1209.The orthometric height was determined by differential leveling and
 JV1209.adjusted by the NATIONAL GEODETIC SURVEY
 JV1209.in June 1991.
 JV1209
 JV1209.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1209.GEOID18 height accuracy estimate available here.
 JV1209
 JV1209.Click photographs - Photos may exist for this station.
 JV1209
 JV1209.The dynamic height is computed by dividing the NAVD 88
 JV1209.geopotential number by the normal gravity value computed on the
 JV1209.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1209.degrees latitude (g = 980.6199 gals.).
 JV1209
 JV1209.The modeled gravity was interpolated from observed gravity values.
 JV1209
 JV1209;                    North         East    Units  Estimated Accuracy
 JV1209;SPC MD       -   184,300.      431,230.      MT  (+/- 180 meters Scaled)
 JV1209
 JV1209_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ588542(NAD 83)
 JV1209
 JV1209                          SUPERSEDED SURVEY CONTROL
 JV1209
 JV1209  NGVD 29 (11/26/84)   42.194  (m)          138.43   (f) ADJUSTED    2 0
 JV1209
 JV1209.Superseded values are not recommended for survey control.
 JV1209
 JV1209.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1209.See file dsdata.pdf to determine how the superseded data were derived.
 JV1209
 JV1209_MARKER: Q = CHISELED SQUARE
 JV1209_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1209_SP_SET: COPING
 JV1209_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1209
 JV1209  HISTORY     - Date     Condition        Report By
 JV1209  HISTORY     - UNK      MONUMENTED       MD0050
 JV1209  HISTORY     - 1935     GOOD             CGS
 JV1209
 JV1209                          STATION DESCRIPTION
 JV1209
 JV1209'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1209'AT BALTIMORE.
 JV1209'AT BALTIMORE, WEST OF JONES FALLS, OPPOSITE THE CLIPPER MILLS,
 JV1209'NEAR A FOOT BRIDGE LEADING TO AN N.C.R.R. UNDERPASS, ON THE TOP
 JV1209'OF THE COPING OF THE EAST RETAINING WALL, AND 22 FEET FROM THE
 JV1209'SOUTH END.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0727 ***********************************************************************
 JV0727  DESIGNATION -  106 A
 JV0727  PID         -  JV0727
 JV0727  STATE/COUNTY-  MD/HOWARD
 JV0727  COUNTRY     -  US
 JV0727  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0727
 JV0727                         *CURRENT SURVEY CONTROL
 JV0727  ______________________________________________________________________
 JV0727* NAD 83(1986) POSITION- 39 16 21.     (N) 076 47 28.     (W)   SCALED
 JV0727* NAVD 88 ORTHO HEIGHT -    44.901 (meters)      147.31  (feet) ADJUSTED
 JV0727  ______________________________________________________________________
 JV0727  GEOID HEIGHT    -        -32.242 (meters)                     GEOID18
 JV0727  DYNAMIC HEIGHT  -         44.877 (meters)      147.23  (feet) COMP
 JV0727  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV0727
 JV0727  VERT ORDER      -  FIRST     CLASS II
 JV0727
 JV0727.The horizontal coordinates were scaled from a map and have
 JV0727.an estimated accuracy of +/- 6 seconds.
 JV0727
 JV0727.The orthometric height was determined by differential leveling and
 JV0727.adjusted by the NATIONAL GEODETIC SURVEY
 JV0727.in June 1991.
 JV0727
 JV0727.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0727.GEOID18 height accuracy estimate available here.
 JV0727
 JV0727.Click photographs - Photos may exist for this station.
 JV0727
 JV0727.The dynamic height is computed by dividing the NAVD 88
 JV0727.geopotential number by the normal gravity value computed on the
 JV0727.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0727.degrees latitude (g = 980.6199 gals.).
 JV0727
 JV0727.The modeled gravity was interpolated from observed gravity values.
 JV0727
 JV0727;                    North         East    Units  Estimated Accuracy
 JV0727;SPC MD       -   178,280.      418,030.      MT  (+/- 180 meters Scaled)
 JV0727
 JV0727_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ454485(NAD 83)
 JV0727
 JV0727                          SUPERSEDED SURVEY CONTROL
 JV0727
 JV0727  NGVD 29 (11/26/84)   45.121  (m)          148.03   (f) ADJUSTED    1 2
 JV0727
 JV0727.Superseded values are not recommended for survey control.
 JV0727
 JV0727.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0727.See file dsdata.pdf to determine how the superseded data were derived.
 JV0727
 JV0727_MARKER: B = BOLT
 JV0727_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0727_SP_SET: GRANITE ARCH CULVERT
 JV0727_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0727_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0727_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0727+SATELLITE: SATELLITE OBSERVATIONS - May 01, 1998
 JV0727
 JV0727  HISTORY     - Date     Condition        Report By
 JV0727  HISTORY     - 1903     MONUMENTED       BORR
 JV0727  HISTORY     - 1941     GOOD             CGS
 JV0727  HISTORY     - 1941     GOOD             CGS
 JV0727  HISTORY     - 19960201 GOOD             MCCRON
 JV0727  HISTORY     - 19980501 GOOD             MDSHA
 JV0727
 JV0727                          STATION DESCRIPTION
 JV0727
 JV0727'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0727'0.4 MI N FROM ELLICOTT CITY.
 JV0727'ABOUT 0.4 MILE NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV0727'ELLICOTT CITY, HOWARD COUNTY, ABOUT 700 FEET SOUTH OF THE OLD
 JV0727'TELEPHONE STATION AT OELLA, ABOUT 650 FEET SOUTH OF THE SOUTHWEST
 JV0727'END OF A BRIDGE OVER PATAPSCO RIVER LEADING TO A WOOLEN GOODS
 JV0727'FACTORY, 40 FEET NORTH OF A POINT DIRECTLY BENEATH A
 JV0727'POWER-TRANSMISSION LINE CROSSING THE RIVER, AT AN ARCH CULVERT,
 JV0727'IN THE CENTER OF THE TOP OF THE EAST GRANITE COPING, 6.5 FEET
 JV0727'EAST OF THE EAST RAIL, AND ABOUT 2.8 FEET LOWER THAN THE TOP OF
 JV0727'A RAIL.  A COPPER BOLT.
 JV0727
 JV0727                          STATION RECOVERY (1941)
 JV0727
 JV0727'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941
 JV0727'RECOVERED IN GOOD CONDITION.
 JV0727
 JV0727                          STATION RECOVERY (1996)
 JV0727
 JV0727'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 JV0727'RECOVERED AS DESCRIBED.
 JV0727
 JV0727                          STATION RECOVERY (1998)
 JV0727
 JV0727'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV0727'THE STATION IS LOCATED ABOUT 3.6 MI (5.79 KM) NORTH-NORTHEAST OF
 JV0727'JONESTOWN, 3.1 MI (4.99 KM) WEST OF CATONSVILLE AND 0.5 MI (0.8 KM)
 JV0727'NORTHEAST OF ELLICOTT CITY.
 JV0727'
 JV0727'TO REACH GO NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV0727'RAILROAD STATION IN ELLICOTT CITY FOR 0.4 MILES (0.6 KM) TO A LARGE
 JV0727'ARCHED CULVERT.
 JV0727'
 JV0727'IT IS IN THE CENTER OF THE TOP OF THE EAST GRANITE COPING, 16.8 FEET
 JV0727'(5.1 M) EAST OF THE EAST RAIL, 54.0 FEET (16.5 M) SOUTH 0F MCI FIBER
 JV0727'OPTIC CABLE MARKER NUMBER 01314, 40 FEET (12.2 M) NORTH OF A POINT
 JV0727'DIRECTLY BENEATH A POWER TRANSMISSION LINE CROSSING THE RIVER, ABOUT
 JV0727'3.0 FEET (0.9 M) LOWER THAN THE TOP OF THE RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2782 ***********************************************************************
 JV2782  DESIGNATION -  1064 WSSC
 JV2782  PID         -  JV2782
 JV2782  STATE/COUNTY-  MD/MONTGOMERY
 JV2782  COUNTRY     -  US
 JV2782  USGS QUAD   -  KENSINGTON (2016)
 JV2782
 JV2782                         *CURRENT SURVEY CONTROL
 JV2782  ______________________________________________________________________
 JV2782* NAD 83(1986) POSITION- 39 01 14.     (N) 077 02 40.     (W)   SCALED
 JV2782* NAVD 88 ORTHO HEIGHT -   110.18  (+/-2cm)      361.5   (feet) VERTCON3
 JV2782  ______________________________________________________________________
 JV2782  GEOID HEIGHT    -        -31.927 (meters)                     GEOID18
 JV2782  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2782
 JV2782.The horizontal coordinates were scaled from a map and have
 JV2782.an estimated accuracy of +/- 6 seconds.
 JV2782
 JV2782.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2782.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2782
 JV2782.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2782.GEOID18 height accuracy estimate available here.
 JV2782
 JV2782.The vertical order pertains to the NGVD 29 superseded value.
 JV2782
 JV2782.Click photographs - Photos may exist for this station.
 JV2782
 JV2782;                    North         East    Units  Estimated Accuracy
 JV2782;SPC MD       -   150,290.      396,150.      MT  (+/- 180 meters Scaled)
 JV2782
 JV2782_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ230210(NAD 83)
 JV2782
 JV2782                          SUPERSEDED SURVEY CONTROL
 JV2782
 JV2782  NGVD 29 (11/26/84)  110.391  (m)          362.17   (f) ADJUSTED    2 0
 JV2782
 JV2782.Superseded values are not recommended for survey control.
 JV2782
 JV2782.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2782.See file dsdata.pdf to determine how the superseded data were derived.
 JV2782
 JV2782_MARKER: Z = SEE DESCRIPTION
 JV2782_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2782_SP_SET: CULVERT
 JV2782_STAMPING: WSSC 1064
 JV2782_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2782
 JV2782  HISTORY     - Date     Condition        Report By
 JV2782  HISTORY     - UNK      MONUMENTED       WSSC
 JV2782  HISTORY     - 1939     GOOD             WSSC
 JV2782
 JV2782                          STATION DESCRIPTION
 JV2782
 JV2782'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2782'1.6 MI S FROM WHEATON.
 JV2782'ON GEORGIA AVENUE (STATE HIGHWAY 97), 0.4 MILE NORTH OF THE
 JV2782'INTERSECTION OF FOREST GLEN ROAD, AT A CULVERT UNDER THE HIGHWAY,
 JV2782'AND IN THE TOP OF THE EAST CONCRETE HEADWALL. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2336 ***********************************************************************
 HV2336  DESIGNATION -  1068 WSSC
 HV2336  PID         -  HV2336
 HV2336  STATE/COUNTY-  MD/MONTGOMERY
 HV2336  COUNTRY     -  US
 HV2336  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2336
 HV2336                         *CURRENT SURVEY CONTROL
 HV2336  ______________________________________________________________________
 HV2336* NAD 83(1986) POSITION- 38 58 59.     (N) 077 00 56.     (W)   SCALED
 HV2336* NAVD 88 ORTHO HEIGHT -    74.781 (meters)      245.34  (feet) ADJUSTED
 HV2336  ______________________________________________________________________
 HV2336  GEOID HEIGHT    -        -31.995 (meters)                     GEOID18
 HV2336  DYNAMIC HEIGHT  -         74.741 (meters)      245.21  (feet) COMP
 HV2336  MODELED GRAVITY -    980,089.7   (mgal)                       NAVD 88
 HV2336
 HV2336  VERT ORDER      -  SECOND    CLASS 0
 HV2336
 HV2336.The horizontal coordinates were scaled from a map and have
 HV2336.an estimated accuracy of +/- 6 seconds.
 HV2336
 HV2336.The orthometric height was determined by differential leveling and
 HV2336.adjusted by the NATIONAL GEODETIC SURVEY
 HV2336.in June 1991.
 HV2336
 HV2336.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2336.GEOID18 height accuracy estimate available here.
 HV2336
 HV2336.Click photographs - Photos may exist for this station.
 HV2336
 HV2336.The dynamic height is computed by dividing the NAVD 88
 HV2336.geopotential number by the normal gravity value computed on the
 HV2336.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2336.degrees latitude (g = 980.6199 gals.).
 HV2336
 HV2336.The modeled gravity was interpolated from observed gravity values.
 HV2336
 HV2336;                    North         East    Units  Estimated Accuracy
 HV2336;SPC MD       -   146,130.      398,650.      MT  (+/- 180 meters Scaled)
 HV2336
 HV2336_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ254168(NAD 83)
 HV2336
 HV2336                          SUPERSEDED SURVEY CONTROL
 HV2336
 HV2336  NGVD 29 (11/26/84)   74.992  (m)          246.04   (f) ADJUSTED    2 0
 HV2336
 HV2336.Superseded values are not recommended for survey control.
 HV2336
 HV2336.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2336.See file dsdata.pdf to determine how the superseded data were derived.
 HV2336
 HV2336_MARKER: Z = SEE DESCRIPTION
 HV2336_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2336_SP_SET: STEP
 HV2336_STAMPING: WSSC 1068
 HV2336_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2336
 HV2336  HISTORY     - Date     Condition        Report By
 HV2336  HISTORY     - UNK      MONUMENTED       WSSC
 HV2336  HISTORY     - 1951     GOOD             CGS
 HV2336
 HV2336                          STATION DESCRIPTION
 HV2336
 HV2336'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2336'IN TAKOMA PARK.
 HV2336'IN TAKOMA PARK, MONTGOMERY COUNTY, NEAR THE INTERSECTON OF PINEY
 HV2336'BRANCH ROAD AND PHILADELPHIA AVENUE, ON THE NORTHEAST SIDE
 HV2336'OF PHILADELPHIA AVENUE, IN FRONT OF THE HOUSE SOUTHEAST OF
 HV2336'PINEY BRANCH ROAD, AND ON THE NORTHWEST END OF THE BOTTOM ONE OF A
 HV2336'FLIGHT OF CONCRETE STEPS LEADING UP TO THE FRAME HOUSE.  A
 HV2336'WASHINGTON SUBURBAN SANITARY DISTRICT LAG SCREW AND WASHER,
 HV2336'STAMPED WSSC 1068.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0728 ***********************************************************************
 JV0728  DESIGNATION -  107
 JV0728  PID         -  JV0728
 JV0728  STATE/COUNTY-  MD/HOWARD
 JV0728  COUNTRY     -  US
 JV0728  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0728
 JV0728                         *CURRENT SURVEY CONTROL
 JV0728  ______________________________________________________________________
 JV0728* NAD 83(1986) POSITION- 39 17 06.     (N) 076 47 09.     (W)   SCALED
 JV0728* NAVD 88 ORTHO HEIGHT -    51.069 (meters)      167.55  (feet) ADJUSTED
 JV0728  ______________________________________________________________________
 JV0728  GEOID HEIGHT    -        -32.235 (meters)                     GEOID18
 JV0728  DYNAMIC HEIGHT  -         51.043 (meters)      167.46  (feet) COMP
 JV0728  MODELED GRAVITY -    980,112.2   (mgal)                       NAVD 88
 JV0728
 JV0728  VERT ORDER      -  SECOND    CLASS I
 JV0728
 JV0728.The horizontal coordinates were scaled from a map and have
 JV0728.an estimated accuracy of +/- 6 seconds.
 JV0728
 JV0728.The orthometric height was determined by differential leveling and
 JV0728.adjusted by the NATIONAL GEODETIC SURVEY
 JV0728.in March 2010.
 JV0728
 JV0728.No vertical observational check was made to the station.
 JV0728
 JV0728.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0728.GEOID18 height accuracy estimate available here.
 JV0728
 JV0728.Click photographs - Photos may exist for this station.
 JV0728
 JV0728.The dynamic height is computed by dividing the NAVD 88
 JV0728.geopotential number by the normal gravity value computed on the
 JV0728.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0728.degrees latitude (g = 980.6199 gals.).
 JV0728
 JV0728.The modeled gravity was interpolated from observed gravity values.
 JV0728
 JV0728;                    North         East    Units  Estimated Accuracy
 JV0728;SPC MD       -   179,670.      418,480.      MT  (+/- 180 meters Scaled)
 JV0728
 JV0728_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ459499(NAD 83)
 JV0728
 JV0728                          SUPERSEDED SURVEY CONTROL
 JV0728
 JV0728  NAVD 88 (06/15/91)   51.089  (m)          167.61   (f) SUPERSEDED  1 2
 JV0728  NGVD 29 (11/26/84)   51.309  (m)          168.34   (f) ADJUSTED    1 2
 JV0728
 JV0728.Superseded values are not recommended for survey control.
 JV0728
 JV0728.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0728.See file dsdata.pdf to determine how the superseded data were derived.
 JV0728
 JV0728_MARKER: B = BOLT
 JV0728_SETTING: 66 = SET IN ROCK OUTCROP
 JV0728_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0728_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV0728+STABILITY: POSITION/ELEVATION WELL
 JV0728_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0728+SATELLITE: SATELLITE OBSERVATIONS - May 20, 1998
 JV0728
 JV0728  HISTORY     - Date     Condition        Report By
 JV0728  HISTORY     - 1903     MONUMENTED       BORR
 JV0728  HISTORY     - 1941     GOOD             CGS
 JV0728  HISTORY     - 19980520 GOOD             MDSHA
 JV0728
 JV0728                          STATION DESCRIPTION
 JV0728
 JV0728'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0728'1.1 MI N FROM ELLICOTT CITY.
 JV0728'ABOUT 1.1 MILES NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV0728'ELLICOTT CITY, HOWARD COUNTY, 65.4 FEET SOUTH OF THE TENTH POLE
 JV0728'NORTH OF MILEPOST 16, JUST SOUTH OF THE MOUTH OF A SMALL CANYON,
 JV0728'10.6 FEET WEST OF THE WEST RAIL OF THE EAST-BOUND TRACK, IN THE
 JV0728'TOP OF A ROCK OUTCROP, AND ABOUT 2 FEET HIGHER THAN THE TOP OF
 JV0728'THE RAIL.  A COPPER BOLT.
 JV0728
 JV0728                          STATION RECOVERY (1998)
 JV0728
 JV0728'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV0728'THE STATION IS LOCATED ABOUT 4.0 MI (6.44 KM) EAST OF PINE ORCHARD,
 JV0728'3.0 MI (4.83 KM) WEST-NORTHWEST OF CATONSVILLE AND 1.4 MI (2.25 KM)
 JV0728'NORTH-NORTHEAST OF ELLICOTT CITY.
 JV0728'
 JV0728'TO REACH GO NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV0728'RAILROAD STATION IN ELLICOTT CITY FOR 1.1 MILES (1.8 KM) TO A POINT
 JV0728'JUST SOUTH OF THE MOUTH OF A SMALL CANYON.
 JV0728'
 JV0728'IT IS 10.6 FEET (3.2 M) WEST OF THE WEST RAIL, 80.5 FEET (24.5 M)
 JV0728'NORTH OF POLE NUMBER 13-40, 64.5 FEET (19.7 M) SOUTH OF A POLE WITH NO
 JV0728'NUMBERS, 50.0 FEET (15.2 M) WEST OF A FIBERGLASS WITNESS POST LOCATED
 JV0728'AT THE TOP OF THE WEST BANK OF THE PATAPSCO RIVER, 85.0 FEET (25.9 M)
 JV0728'SOUTHWEST OF METAL MILE MARKER 14, SET IN THE TOP OF A ROCK OUTCROP
 JV0728'THAT PROJECTS FROM THE SIDE OF THE HILL AND 1 FOOT (0.3 M) HIGHER THAN
 JV0728'THE TOP OF THE RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0731 ***********************************************************************
 JV0731  DESIGNATION -  108 BORR
 JV0731  PID         -  JV0731
 JV0731  STATE/COUNTY-  MD/HOWARD
 JV0731  COUNTRY     -  US
 JV0731  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0731
 JV0731                         *CURRENT SURVEY CONTROL
 JV0731  ______________________________________________________________________
 JV0731* NAD 83(1986) POSITION- 39 17 42.     (N) 076 46 46.     (W)   SCALED
 JV0731* NAVD 88 ORTHO HEIGHT -    56.928 (meters)      186.77  (feet) ADJUSTED
 JV0731  ______________________________________________________________________
 JV0731  GEOID HEIGHT    -        -32.234 (meters)                     GEOID18
 JV0731  DYNAMIC HEIGHT  -         56.898 (meters)      186.67  (feet) COMP
 JV0731  MODELED GRAVITY -    980,112.5   (mgal)                       NAVD 88
 JV0731
 JV0731  VERT ORDER      -  FIRST     CLASS II
 JV0731
 JV0731.The horizontal coordinates were scaled from a map and have
 JV0731.an estimated accuracy of +/- 6 seconds.
 JV0731
 JV0731.The orthometric height was determined by differential leveling and
 JV0731.adjusted by the NATIONAL GEODETIC SURVEY
 JV0731.in June 1991.
 JV0731
 JV0731.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0731.GEOID18 height accuracy estimate available here.
 JV0731
 JV0731.Click photographs - Photos may exist for this station.
 JV0731
 JV0731.The dynamic height is computed by dividing the NAVD 88
 JV0731.geopotential number by the normal gravity value computed on the
 JV0731.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0731.degrees latitude (g = 980.6199 gals.).
 JV0731
 JV0731.The modeled gravity was interpolated from observed gravity values.
 JV0731
 JV0731;                    North         East    Units  Estimated Accuracy
 JV0731;SPC MD       -   180,780.      419,030.      MT  (+/- 180 meters Scaled)
 JV0731
 JV0731_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ465510(NAD 83)
 JV0731
 JV0731                          SUPERSEDED SURVEY CONTROL
 JV0731
 JV0731  NGVD 29 (11/26/84)   57.147  (m)          187.49   (f) ADJUSTED    1 2
 JV0731
 JV0731.Superseded values are not recommended for survey control.
 JV0731
 JV0731.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0731.See file dsdata.pdf to determine how the superseded data were derived.
 JV0731
 JV0731_MARKER: B = BOLT
 JV0731_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0731_SP_SET: DAM WINGWALL
 JV0731_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0731
 JV0731  HISTORY     - Date     Condition        Report By
 JV0731  HISTORY     - 1903     MONUMENTED       BORR
 JV0731  HISTORY     - 1941     GOOD             CGS
 JV0731
 JV0731                          STATION DESCRIPTION
 JV0731
 JV0731'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0731'2.2 MI N FROM ELLICOTT CITY.
 JV0731'ABOUT 2.2 MILES NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV0731'ELLICOTT CITY, HOWARD COUNTY, ABOUT 1-1/2 MILES SOUTH OF
 JV0731'HOLLOFIELD, AT UNION DAM, ABOUT 205 PACES NORTHEAST OF THE SOUTH
 JV0731'ENTRANCE TO THE DAM TUNNEL, 84.0 FEET NORTHEAST OF THE WEST END
 JV0731'OF THE NEW CONCRETE DAM, IN THE TOP OF THE WEST MASONRY WING
 JV0731'WALL OF THE OLD DAM, AND 3.0 FEET NORTH OF THE SOUTHEAST CORNER
 JV0731'OF THE WING WALL.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1442 ***********************************************************************
 HV1442  DESIGNATION -  1081 WSSC
 HV1442  PID         -  HV1442
 HV1442  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1442  COUNTRY     -  US
 HV1442  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1442
 HV1442                         *CURRENT SURVEY CONTROL
 HV1442  ______________________________________________________________________
 HV1442* NAD 83(1986) POSITION- 38 59 57.     (N) 076 56 06.     (W)   SCALED
 HV1442* NAVD 88 ORTHO HEIGHT -    22.55  (+/-2cm)       74.0   (feet) VERTCON3
 HV1442  ______________________________________________________________________
 HV1442  GEOID HEIGHT    -        -32.124 (meters)                     GEOID18
 HV1442  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1442
 HV1442.The horizontal coordinates were scaled from a map and have
 HV1442.an estimated accuracy of +/- 6 seconds.
 HV1442
 HV1442.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1442.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1442
 HV1442.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1442.GEOID18 height accuracy estimate available here.
 HV1442
 HV1442.The vertical order pertains to the NGVD 29 superseded value.
 HV1442
 HV1442.Click photographs - Photos may exist for this station.
 HV1442
 HV1442;                    North         East    Units  Estimated Accuracy
 HV1442;SPC MD       -   147,920.      405,630.      MT  (+/- 180 meters Scaled)
 HV1442
 HV1442_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ324184(NAD 83)
 HV1442
 HV1442                          SUPERSEDED SURVEY CONTROL
 HV1442
 HV1442  NGVD 29 (11/26/84)   22.777  (m)           74.73   (f) ADJUSTED    2 0
 HV1442
 HV1442.Superseded values are not recommended for survey control.
 HV1442
 HV1442.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1442.See file dsdata.pdf to determine how the superseded data were derived.
 HV1442
 HV1442_MARKER: Z = SEE DESCRIPTION
 HV1442_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1442_SP_SET: CULVERT
 HV1442_STAMPING: WSSC 1081
 HV1442_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1442
 HV1442  HISTORY     - Date     Condition        Report By
 HV1442  HISTORY     - UNK      MONUMENTED       WSSC
 HV1442  HISTORY     - 1951     GOOD             CGS
 HV1442  HISTORY     - 20031021 MARK NOT FOUND   URS
 HV1442
 HV1442                          STATION DESCRIPTION
 HV1442
 HV1442'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1442'0.2 MI W FROM BRANCHVILLE.
 HV1442'ABOUT 1/4 MILE WEST ALONG METZROTT ROAD FROM THE JUNCTION OF
 HV1442'U.S. HIGHWAY 1 AT BRANCHVILLE, PRINCE GEORGES COUNTY, AT A
 HV1442'CULVERT, AND IN THE TOP OF THE NORTH HEADWALL.  A WASHINGTON
 HV1442'SUBURBAN SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED WSSC
 HV1442'1081.
 HV1442
 HV1442                          STATION RECOVERY (2003)
 HV1442
 HV1442'RECOVERY NOTE BY URS COMPANY 2003
 HV1442'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3775 ***********************************************************************
 JV3775  DESIGNATION -  1082 WSSC
 JV3775  PID         -  JV3775
 JV3775  STATE/COUNTY-  MD/PRINCE GEORGES
 JV3775  COUNTRY     -  US
 JV3775  USGS QUAD   -  BELTSVILLE (2016)
 JV3775
 JV3775                         *CURRENT SURVEY CONTROL
 JV3775  ______________________________________________________________________
 JV3775* NAD 83(1986) POSITION- 39 00 02.     (N) 076 56 26.     (W)   SCALED
 JV3775* NAVD 88 ORTHO HEIGHT -    25.911 (meters)       85.01  (feet) ADJUSTED
 JV3775  ______________________________________________________________________
 JV3775  GEOID HEIGHT    -        -32.111 (meters)                     GEOID18
 JV3775  DYNAMIC HEIGHT  -         25.897 (meters)       84.96  (feet) COMP
 JV3775  MODELED GRAVITY -    980,108.8   (mgal)                       NAVD 88
 JV3775
 JV3775  VERT ORDER      -  SECOND    CLASS 0
 JV3775
 JV3775.The horizontal coordinates were scaled from a map and have
 JV3775.an estimated accuracy of +/- 6 seconds.
 JV3775
 JV3775.The orthometric height was determined by differential leveling and
 JV3775.adjusted by the NATIONAL GEODETIC SURVEY
 JV3775.in June 1991.
 JV3775
 JV3775.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3775.GEOID18 height accuracy estimate available here.
 JV3775
 JV3775.Click photographs - Photos may exist for this station.
 JV3775
 JV3775.The dynamic height is computed by dividing the NAVD 88
 JV3775.geopotential number by the normal gravity value computed on the
 JV3775.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3775.degrees latitude (g = 980.6199 gals.).
 JV3775
 JV3775.The modeled gravity was interpolated from observed gravity values.
 JV3775
 JV3775;                    North         East    Units  Estimated Accuracy
 JV3775;SPC MD       -   148,070.      405,150.      MT  (+/- 180 meters Scaled)
 JV3775
 JV3775_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ319186(NAD 83)
 JV3775
 JV3775                          SUPERSEDED SURVEY CONTROL
 JV3775
 JV3775  NGVD 29 (11/26/84)   26.139  (m)           85.76   (f) ADJUSTED    2 0
 JV3775
 JV3775.Superseded values are not recommended for survey control.
 JV3775
 JV3775.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3775.See file dsdata.pdf to determine how the superseded data were derived.
 JV3775
 JV3775_MARKER: Z = SEE DESCRIPTION
 JV3775_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV3775_SP_SET: CHIMNEY
 JV3775_STAMPING: 1082 WSSD
 JV3775_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3775
 JV3775  HISTORY     - Date     Condition        Report By
 JV3775  HISTORY     - UNK      MONUMENTED       WSSC
 JV3775  HISTORY     - 1971     GOOD             NGS
 JV3775
 JV3775                          STATION DESCRIPTION
 JV3775
 JV3775'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV3775'AT COLLEGE PARK.
 JV3775'AT COLLEGE PARK, AT THE SUBDIVISION OF BRANCHVILLE, ABOUT 1.3
 JV3775'MILES SOUTH ALONG U.S. HIGHWAY 1 FROM THE INTERSTATE HIGHWAY 495
 JV3775'(CAPITOL BELTWAY) INTERCHANGE, THENCE 0.6 MILE WEST ALONG
 JV3775'METZROTT ROAD, AT THE LAST HOUSE ON THE NORTH SIDE OF THE ROAD
 JV3775'BEFORE REACHING THE INTERSECTION OF UNIVERSITY BOULEVARD, SET
 JV3775'VERTICALLY IN THE EAST FACE OF THE BRICK CHIMNEY ON THE EAST
 JV3775'SIDE OF THE HOUSE, AND ABOUT 1 FOOT ABOVE THE SURFACE OF THE
 JV3775'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1426 ***********************************************************************
 JV1426  DESIGNATION -  1089 WSSC
 JV1426  PID         -  JV1426
 JV1426  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1426  COUNTRY     -  US
 JV1426  USGS QUAD   -  BELTSVILLE (2016)
 JV1426
 JV1426                         *CURRENT SURVEY CONTROL
 JV1426  ______________________________________________________________________
 JV1426* NAD 83(1986) POSITION- 39 00 12.     (N) 076 58 25.     (W)   SCALED
 JV1426* NAVD 88 ORTHO HEIGHT -    41.314 (meters)      135.54  (feet) ADJUSTED
 JV1426  ______________________________________________________________________
 JV1426  GEOID HEIGHT    -        -32.050 (meters)                     GEOID18
 JV1426  DYNAMIC HEIGHT  -         41.293 (meters)      135.48  (feet) COMP
 JV1426  MODELED GRAVITY -    980,100.0   (mgal)                       NAVD 88
 JV1426
 JV1426  VERT ORDER      -  SECOND    CLASS 0
 JV1426
 JV1426.The horizontal coordinates were scaled from a map and have
 JV1426.an estimated accuracy of +/- 6 seconds.
 JV1426
 JV1426.The orthometric height was determined by differential leveling and
 JV1426.adjusted by the NATIONAL GEODETIC SURVEY
 JV1426.in June 1991.
 JV1426
 JV1426.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1426.GEOID18 height accuracy estimate available here.
 JV1426
 JV1426.Click photographs - Photos may exist for this station.
 JV1426
 JV1426.The dynamic height is computed by dividing the NAVD 88
 JV1426.geopotential number by the normal gravity value computed on the
 JV1426.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1426.degrees latitude (g = 980.6199 gals.).
 JV1426
 JV1426.The modeled gravity was interpolated from observed gravity values.
 JV1426
 JV1426;                    North         East    Units  Estimated Accuracy
 JV1426;SPC MD       -   148,380.      402,290.      MT  (+/- 180 meters Scaled)
 JV1426
 JV1426_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ291189(NAD 83)
 JV1426
 JV1426                          SUPERSEDED SURVEY CONTROL
 JV1426
 JV1426  NGVD 29 (11/26/84)   41.541  (m)          136.29   (f) ADJUSTED    2 0
 JV1426
 JV1426.Superseded values are not recommended for survey control.
 JV1426
 JV1426.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1426.See file dsdata.pdf to determine how the superseded data were derived.
 JV1426
 JV1426_MARKER: Z = SEE DESCRIPTION
 JV1426_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1426_SP_SET: BRIDGE
 JV1426_STAMPING: WSSC 1089
 JV1426_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1426
 JV1426  HISTORY     - Date     Condition        Report By
 JV1426  HISTORY     - UNK      MONUMENTED       WSSC
 JV1426  HISTORY     - 1951     GOOD             CGS
 JV1426
 JV1426                          STATION DESCRIPTION
 JV1426
 JV1426'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1426'0.1 MI W FROM ADELPHI.
 JV1426'ABOUT 0.1 MILE WEST ALONG METZROTT ROAD FROM THE JUNCTION OF
 JV1426'RIGGS ROAD AT ADELPHI, PRINCE GEORGES COUNTY, AT A BRIDGE OVER
 JV1426'A SMALL STREAM, AND ON THE NORTHWEST WING WALL.  A WASHINGTON
 JV1426'SUBURBAN SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED WSSC 1089.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0394 ***********************************************************************
 HV0394  DESIGNATION -  109
 HV0394  PID         -  HV0394
 HV0394  STATE/COUNTY-  MD/ST MARYS
 HV0394  COUNTRY     -  US
 HV0394  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV0394
 HV0394                         *CURRENT SURVEY CONTROL
 HV0394  ______________________________________________________________________
 HV0394* NAD 83(1986) POSITION- 38 12 21.     (N) 076 25 35.     (W)   SCALED
 HV0394* NAVD 88 ORTHO HEIGHT -    32.929 (meters)      108.03  (feet) ADJUSTED
 HV0394  ______________________________________________________________________
 HV0394  GEOID HEIGHT    -        -34.731 (meters)                     GEOID18
 HV0394  DYNAMIC HEIGHT  -         32.908 (meters)      107.97  (feet) COMP
 HV0394  MODELED GRAVITY -    979,997.9   (mgal)                       NAVD 88
 HV0394
 HV0394  VERT ORDER      -  FIRST     CLASS II
 HV0394
 HV0394.The horizontal coordinates were scaled from a map and have
 HV0394.an estimated accuracy of +/- 6 seconds.
 HV0394
 HV0394.The orthometric height was determined by differential leveling and
 HV0394.adjusted by the NATIONAL GEODETIC SURVEY
 HV0394.in June 1991.
 HV0394
 HV0394.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0394.GEOID18 height accuracy estimate available here.
 HV0394
 HV0394.Click photographs - Photos may exist for this station.
 HV0394
 HV0394.The dynamic height is computed by dividing the NAVD 88
 HV0394.geopotential number by the normal gravity value computed on the
 HV0394.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0394.degrees latitude (g = 980.6199 gals.).
 HV0394
 HV0394.The modeled gravity was interpolated from observed gravity values.
 HV0394
 HV0394;                    North         East    Units  Estimated Accuracy
 HV0394;SPC MD       -    60,010.      450,240.      MT  (+/- 180 meters Scaled)
 HV0394
 HV0394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH751296(NAD 83)
 HV0394
 HV0394                          SUPERSEDED SURVEY CONTROL
 HV0394
 HV0394  NGVD 29 (11/26/84)   33.220  (m)          108.99   (f) ADJUSTED    1 2
 HV0394
 HV0394.Superseded values are not recommended for survey control.
 HV0394
 HV0394.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0394.See file dsdata.pdf to determine how the superseded data were derived.
 HV0394
 HV0394_MARKER: DD = SURVEY DISK
 HV0394_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV0394_MARK LOGO: CGS+SS
 HV0394_PROJECTION: FLUSH
 HV0394_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0394
 HV0394  HISTORY     - Date     Condition        Report By
 HV0394  HISTORY     - 1934     MONUMENTED       MDGS
 HV0394  HISTORY     - 1941     GOOD             CGS
 HV0394  HISTORY     - 19910103 MARK NOT FOUND   NGS
 HV0394
 HV0394                          STATION DESCRIPTION
 HV0394
 HV0394'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0394'1.1 MI SE FROM PARK HALL.
 HV0394'ABOUT 1.1 MILES SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0394'OFFICE AT PARK HALL, SAINT MARYS COUNTY, 45 FEET NORTH OF THE
 HV0394'CENTER LINE OF THE HIGHWAY, IN LINE WITH THE POINT OF TANGENCY
 HV0394'OF A CURVE TO THE SOUTH, AND ABOUT 1 FOOT HIGHER THAN THE
 HV0394'HIGHWAY.  A STATE SURVEY STANDARD DISK, SET IN THE TOP OF A
 HV0394'CONCRETE POST ABOUT FLUSH WITH THE GROUND.
 HV0394
 HV0394                          STATION RECOVERY (1991)
 HV0394
 HV0394'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV0394'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1814 ***********************************************************************
 HV1814  DESIGNATION -  109
 HV1814  PID         -  HV1814
 HV1814  STATE/COUNTY-  MD/MONTGOMERY
 HV1814  COUNTRY     -  US
 HV1814  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1814
 HV1814                         *CURRENT SURVEY CONTROL
 HV1814  ______________________________________________________________________
 HV1814* NAD 83(1986) POSITION- 38 56 40.9    (N) 077 06 57.4    (W)   HD_HELD2
 HV1814* NAVD 88 ORTHO HEIGHT -    50.578 (meters)      165.94  (feet) ADJUSTED
 HV1814  ______________________________________________________________________
 HV1814  GEOID HEIGHT    -        -31.900 (meters)                     GEOID18
 HV1814  DYNAMIC HEIGHT  -         50.551 (meters)      165.85  (feet) COMP
 HV1814  MODELED GRAVITY -    980,093.1   (mgal)                       NAVD 88
 HV1814
 HV1814  VERT ORDER      -  FIRST     CLASS II
 HV1814
 HV1814.The horizontal coordinates were established by autonomous hand held GPS
 HV1814.observations and have an estimated accuracy of +/- 10 meters.
 HV1814
 HV1814.The orthometric height was determined by differential leveling and
 HV1814.adjusted by the NATIONAL GEODETIC SURVEY
 HV1814.in June 1991.
 HV1814
 HV1814.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1814.GEOID18 height accuracy estimate available here.
 HV1814
 HV1814.Click photographs - Photos may exist for this station.
 HV1814
 HV1814.The dynamic height is computed by dividing the NAVD 88
 HV1814.geopotential number by the normal gravity value computed on the
 HV1814.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1814.degrees latitude (g = 980.6199 gals.).
 HV1814
 HV1814.The modeled gravity was interpolated from observed gravity values.
 HV1814
 HV1814;                    North         East    Units  Estimated Accuracy
 HV1814;SPC MD       -   141,873.      389,949.      MT  (+/- 10 meters HH2 GPS)
 HV1814
 HV1814_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1662512768(NAD 83)
 HV1814
 HV1814                          SUPERSEDED SURVEY CONTROL
 HV1814
 HV1814  NGVD 29 (11/26/84)   50.796  (m)          166.65   (f) ADJUSTED    1 2
 HV1814
 HV1814.Superseded values are not recommended for survey control.
 HV1814
 HV1814.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1814.See file dsdata.pdf to determine how the superseded data were derived.
 HV1814
 HV1814_MARKER: Q = CHISELED SQUARE
 HV1814_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1814_SP_SET: BRIDGE
 HV1814_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1814_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1814+SATELLITE: SATELLITE OBSERVATIONS - November 05, 2005
 HV1814
 HV1814  HISTORY     - Date     Condition        Report By
 HV1814  HISTORY     - UNK      MONUMENTED       WSSC
 HV1814  HISTORY     - 1933     GOOD             CGS
 HV1814  HISTORY     - 1953     GOOD             CGS
 HV1814  HISTORY     - 20051105 GOOD             GEOCAC
 HV1814
 HV1814                          STATION DESCRIPTION
 HV1814
 HV1814'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1814'AT BROOKMONT.
 HV1814'AT BROOKMONT, MONTGOMERY COUNTY, ON THE GEORGETOWN BRANCH OF THE
 HV1814'BALTIMORE AND OHIO RAILRAOD, 270 FEET NORTH OF THE NORTH PORTAL OF
 HV1814'DALECARLIA TUNNEL, 40 FEET WEST OF THE INTAKE LOCKS OF DALECARLIA
 HV1814'RESERVOIR, AT STEEL BRIDGE NO. 14, ON THE NORTHEAST END OF THE
 HV1814'SOUTHEAST RETAINING WALL, 9.5 FEET EAST OF THE CENTERLINE OF
 HV1814'THE TRACK, AND ABOUT 1 FOOT BELOW THE TOP OF THE RAIL.  A
 HV1814'CHISELED SQUARE.
 HV1814
 HV1814                          STATION RECOVERY (1953)
 HV1814
 HV1814'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953
 HV1814'RECOVERED IN GOOD CONDITION.
 HV1814
 HV1814                          STATION RECOVERY (2005)
 HV1814
 HV1814'RECOVERY NOTE BY GEOCACHING 2005 (TAK)
 HV1814'THE RAILROAD BRIDGE IS NOW A BIKE PATH BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1425 ***********************************************************************
 JV1425  DESIGNATION -  1090 WSSC
 JV1425  PID         -  JV1425
 JV1425  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1425  COUNTRY     -  US
 JV1425  USGS QUAD   -  BELTSVILLE (2016)
 JV1425
 JV1425                         *CURRENT SURVEY CONTROL
 JV1425  ______________________________________________________________________
 JV1425* NAD 83(1986) POSITION- 39 00 14.     (N) 076 58 43.     (W)   SCALED
 JV1425* NAVD 88 ORTHO HEIGHT -    45.431 (meters)      149.05  (feet) ADJUSTED
 JV1425  ______________________________________________________________________
 JV1425  GEOID HEIGHT    -        -32.042 (meters)                     GEOID18
 JV1425  DYNAMIC HEIGHT  -         45.407 (meters)      148.97  (feet) COMP
 JV1425  MODELED GRAVITY -    980,098.4   (mgal)                       NAVD 88
 JV1425
 JV1425  VERT ORDER      -  SECOND    CLASS 0
 JV1425
 JV1425.The horizontal coordinates were scaled from a map and have
 JV1425.an estimated accuracy of +/- 6 seconds.
 JV1425
 JV1425.The orthometric height was determined by differential leveling and
 JV1425.adjusted by the NATIONAL GEODETIC SURVEY
 JV1425.in June 1991.
 JV1425
 JV1425.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1425.GEOID18 height accuracy estimate available here.
 JV1425
 JV1425.Click photographs - Photos may exist for this station.
 JV1425
 JV1425.The dynamic height is computed by dividing the NAVD 88
 JV1425.geopotential number by the normal gravity value computed on the
 JV1425.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1425.degrees latitude (g = 980.6199 gals.).
 JV1425
 JV1425.The modeled gravity was interpolated from observed gravity values.
 JV1425
 JV1425;                    North         East    Units  Estimated Accuracy
 JV1425;SPC MD       -   148,440.      401,850.      MT  (+/- 180 meters Scaled)
 JV1425
 JV1425_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ286190(NAD 83)
 JV1425
 JV1425                          SUPERSEDED SURVEY CONTROL
 JV1425
 JV1425  NGVD 29 (11/26/84)   45.658  (m)          149.80   (f) ADJUSTED    2 0
 JV1425
 JV1425.Superseded values are not recommended for survey control.
 JV1425
 JV1425.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1425.See file dsdata.pdf to determine how the superseded data were derived.
 JV1425
 JV1425_MARKER: Z = SEE DESCRIPTION
 JV1425_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1425_SP_SET: BRIDGE
 JV1425_STAMPING: WSSC 1090
 JV1425_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1425
 JV1425  HISTORY     - Date     Condition        Report By
 JV1425  HISTORY     - UNK      MONUMENTED       WSSC
 JV1425  HISTORY     - 1951     GOOD             CGS
 JV1425
 JV1425                          STATION DESCRIPTION
 JV1425
 JV1425'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1425'0.4 MI W FROM ADELPHI.
 JV1425'ABOUT 0.4 MILE WEST ALONG METZROTT ROAD FROM THE JUNCTION OF
 JV1425'RIGGS ROAD AT ADELPHI, PRINCE GEORGES COUNTY, AT A BRIDGE OVER
 JV1425'A SMALL STREAM, AND ON THE SOUTHWEST WING WALL.  A WASHINGTON
 JV1425'SUBURBAN SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED WSSC 1090.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1185 ***********************************************************************
 JV1185  DESIGNATION -  11
 JV1185  PID         -  JV1185
 JV1185  STATE/COUNTY-  MD/BALTIMORE
 JV1185  COUNTRY     -  US
 JV1185  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1185
 JV1185                         *CURRENT SURVEY CONTROL
 JV1185  ______________________________________________________________________
 JV1185* NAD 83(1986) POSITION- 39 24 29.     (N) 076 38 43.     (W)   SCALED
 JV1185* NAVD 88 ORTHO HEIGHT -    86.375 (meters)      283.38  (feet) ADJUSTED
 JV1185  ______________________________________________________________________
 JV1185  GEOID HEIGHT    -        -32.473 (meters)                     GEOID18
 JV1185  DYNAMIC HEIGHT  -         86.330 (meters)      283.23  (feet) COMP
 JV1185  MODELED GRAVITY -    980,100.0   (mgal)                       NAVD 88
 JV1185
 JV1185  VERT ORDER      -  SECOND    CLASS 0
 JV1185
 JV1185.The horizontal coordinates were scaled from a map and have
 JV1185.an estimated accuracy of +/- 6 seconds.
 JV1185
 JV1185.The orthometric height was determined by differential leveling and
 JV1185.adjusted by the NATIONAL GEODETIC SURVEY
 JV1185.in June 1991.
 JV1185
 JV1185.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1185.GEOID18 height accuracy estimate available here.
 JV1185
 JV1185.Click photographs - Photos may exist for this station.
 JV1185
 JV1185.The dynamic height is computed by dividing the NAVD 88
 JV1185.geopotential number by the normal gravity value computed on the
 JV1185.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1185.degrees latitude (g = 980.6199 gals.).
 JV1185
 JV1185.The modeled gravity was interpolated from observed gravity values.
 JV1185
 JV1185;                    North         East    Units  Estimated Accuracy
 JV1185;SPC MD       -   193,370.      430,550.      MT  (+/- 180 meters Scaled)
 JV1185
 JV1185_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ583633(NAD 83)
 JV1185
 JV1185                          SUPERSEDED SURVEY CONTROL
 JV1185
 JV1185  NGVD 29 (11/26/84)   86.600  (m)          284.12   (f) ADJUSTED    2 0
 JV1185
 JV1185.Superseded values are not recommended for survey control.
 JV1185
 JV1185.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1185.See file dsdata.pdf to determine how the superseded data were derived.
 JV1185
 JV1185_MARKER: B = BOLT
 JV1185_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1185_SP_SET: CULVERT
 JV1185_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1185+STABILITY: SURFACE MOTION
 JV1185
 JV1185  HISTORY     - Date     Condition        Report By
 JV1185  HISTORY     - UNK      MONUMENTED       PRR
 JV1185  HISTORY     - 1942     GOOD             CGS
 JV1185  HISTORY     - 20110315 GOOD             JARICE
 JV1185  HISTORY     - 20241205 GOOD             MDSHA
 JV1185
 JV1185                          STATION DESCRIPTION
 JV1185
 JV1185'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1185'AT RIDERWOOD.
 JV1185'AT RIDERWOOD, BALTIMORE COUNTY, ABOUT 300 FEET SOUTH OF THE
 JV1185'PENNSYLVANIA RAILROAD STATION, 114 FEET NORTH OF MILEPOST 9, IN
 JV1185'THE CENTER OF THE TOP OF THE EAST END OF A CULVERT, AND 12 FEET
 JV1185'EAST OF THE CENTERLINE OF THE EAST TRACK.  A COPPER BOLT.
 JV1185
 JV1185                          STATION RECOVERY (2011)
 JV1185
 JV1185'RECOVERY NOTE BY J A RICE INC 2011 (SMD)
 JV1185'RECOVERED IN GOOD CONDITION.
 JV1185
 JV1185                          STATION RECOVERY (2024)
 JV1185
 JV1185'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 JV1185'THE MARK IS 17.8 FT (5.4 M) SOUTH OF THE NORTH END OF THE CONCRETE
 JV1185'HEADWALL, 15.6 FT (4.8 M) NORTH OF THE SOUTH END OF THE CONCRETE
 JV1185'HEADWALL, 6.0 FT (1.8 M) NORTH-NORTHWEST OF UTILITY POLE G AND E
 JV1185'503503.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3590 ***********************************************************************
 JU3590  DESIGNATION -  11
 JU3590  PID         -  JU3590
 JU3590  STATE/COUNTY-  MD/CECIL
 JU3590  COUNTRY     -  US
 JU3590  USGS QUAD   -  EARLEVILLE (2016)
 JU3590
 JU3590                         *CURRENT SURVEY CONTROL
 JU3590  ______________________________________________________________________
 JU3590* NAD 83(1991) POSITION- 39 26 17.45696(N) 075 58 45.55652(W)   ADJUSTED
 JU3590* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3590  ______________________________________________________________________
 JU3590  GEOID HEIGHT    -        -33.380 (meters)                     GEOID18
 JU3590  LAPLACE CORR    -         -0.96  (seconds)                    DEFLEC18
 JU3590  HORZ ORDER      -  THIRD
 JU3590
 JU3590.The horizontal coordinates were established by classical geodetic methods
 JU3590.and adjusted by the National Geodetic Survey in January 1992.
 JU3590
 JU3590.The orthometric height was scaled from a topographic map.
 JU3590
 JU3590.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3590.GEOID18 height accuracy estimate available here.
 JU3590
 JU3590.Click photographs - Photos may exist for this station.
 JU3590
 JU3590.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3590
 JU3590. The following values were computed from the NAD 83(1991) position.
 JU3590
 JU3590;                    North         East     Units Scale Factor Converg.
 JU3590;SPC MD       -   197,142.853   487,867.776   MT  0.99999795   +0 38 26.2
 JU3590;SPC MD       -   646,792.84  1,600,612.86   sFT  0.99999795   +0 38 26.2
 JU3590;UTM  18      - 4,365,861.553   415,723.584   MT  0.99968745   -0 37 19.7
 JU3590
 JU3590!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3590!SPC MD       -   1.00000512  x   0.99999795  =   1.00000307
 JU3590!UTM  18      -   1.00000512  x   0.99968745  =   0.99969257
 JU3590
 JU3590:                Primary Azimuth Mark                     Grid Az
 JU3590:SPC MD       -  TURKEY POINT RESET                       295 20 23.5
 JU3590:UTM  18      -  TURKEY POINT RESET                       296 36 09.4
 JU3590
 JU3590_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1572365861(NAD 83)
 JU3590
 JU3590|---------------------------------------------------------------------|
 JU3590| PID    Reference Object                     Distance      Geod. Az  |
 JU3590|                                                           dddmmss.s |
 JU3590| JV4850 TURKEY POINT RESET                  APPROX. 2.9 KM 2955849.7 |
 JU3590|---------------------------------------------------------------------|
 JU3590
 JU3590                          SUPERSEDED SURVEY CONTROL
 JU3590
 JU3590  NAD 83(1986)-  39 26 17.44931(N)    075 58 45.56282(W) AD(       ) 3
 JU3590  NAD 27      -  39 26 17.05500(N)    075 58 46.77400(W) AD(       ) 3
 JU3590
 JU3590.Superseded values are not recommended for survey control.
 JU3590
 JU3590.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3590.See file dsdata.pdf to determine how the superseded data were derived.
 JU3590
 JU3590_MARKER: DD = SURVEY DISK
 JU3590_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3590_STAMPING: NO. 11
 JU3590_MARK LOGO: USACE
 JU3590_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3590+STABILITY: SURFACE MOTION
 JU3590
 JU3590  HISTORY     - Date     Condition        Report By
 JU3590  HISTORY     - 1937     MONUMENTED       USACE
 JU3590  HISTORY     - 1938     GOOD             CGS
 JU3590
 JU3590                          STATION DESCRIPTION
 JU3590
 JU3590'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3590'LOCATED ON THE S SIDE OF ELK RIVER AND ON THE SAND POINT ON THE
 JU3590'W SIDE OF THE MOUTH OF PEARCE CREEK.  IT IS ABOUT 80 METERS
 JU3590'FROM THE EXTREME TIP OF THE POINT AND 12.9 METERS INSHORE FROM
 JU3590'ELK RIVER.  IT IS MARKED BY A STANDARD U.S.E.D. DISK SET ATOP
 JU3590'A 6-INCH SQUARE CONCRETE POST AND IS STAMPED NO.11.  IT
 JU3590'PROJECTS 4 INCHES ABOVE GROUND.
 JU3590
 JU3590                          STATION RECOVERY (1938)
 JU3590
 JU3590'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JU3590'STATION WAS RECOVERED IN GOOD CONDITION.  THE
 JU3590'PRESENT DESCRIPTION IS ADEQUATE.  NO REFERENCE MARKS WERE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2182 ***********************************************************************
 HU2182  DESIGNATION -  11 KEM
 HU2182  PID         -  HU2182
 HU2182  STATE/COUNTY-  MD/WICOMICO
 HU2182  COUNTRY     -  US
 HU2182  USGS QUAD   -  WETIPQUIN (2016)
 HU2182
 HU2182                         *CURRENT SURVEY CONTROL
 HU2182  ______________________________________________________________________
 HU2182* NAD 83(1986) POSITION- 38 18 53.0    (N) 075 49 33.4    (W)   HD_HELD2
 HU2182* NAVD 88 ORTHO HEIGHT -     2.134 (meters)        7.00  (feet) ADJUSTED
 HU2182  ______________________________________________________________________
 HU2182  GEOID HEIGHT    -        -35.744 (meters)                     GEOID18
 HU2182  DYNAMIC HEIGHT  -          2.133 (meters)        7.00  (feet) COMP
 HU2182  MODELED GRAVITY -    979,996.3   (mgal)                       NAVD 88
 HU2182
 HU2182  VERT ORDER      -  SECOND    CLASS I
 HU2182
 HU2182.The horizontal coordinates were established by autonomous hand held GPS
 HU2182.observations and have an estimated accuracy of +/- 10 meters.
 HU2182
 HU2182.The orthometric height was determined by differential leveling and
 HU2182.adjusted by the NATIONAL GEODETIC SURVEY
 HU2182.in June 1991.
 HU2182
 HU2182.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2182.GEOID18 height accuracy estimate available here.
 HU2182
 HU2182.Click photographs - Photos may exist for this station.
 HU2182
 HU2182.The dynamic height is computed by dividing the NAVD 88
 HU2182.geopotential number by the normal gravity value computed on the
 HU2182.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2182.degrees latitude (g = 980.6199 gals.).
 HU2182
 HU2182.The modeled gravity was interpolated from observed gravity values.
 HU2182
 HU2182;                    North         East    Units  Estimated Accuracy
 HU2182;SPC MD       -    72,597.      502,675.      MT  (+/- 10 meters HH2 GPS)
 HU2182
 HU2182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2779441057(NAD 83)
 HU2182
 HU2182                          SUPERSEDED SURVEY CONTROL
 HU2182
 HU2182  NGVD 29 (06/12/91)    2.388  (m)            7.83   (f) ADJUSTED    2 1
 HU2182
 HU2182.Superseded values are not recommended for survey control.
 HU2182
 HU2182.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2182.See file dsdata.pdf to determine how the superseded data were derived.
 HU2182
 HU2182_MARKER: DB = BENCH MARK DISK
 HU2182_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2182_STAMPING: 11 KEM 1977
 HU2182_MARK LOGO: USGS
 HU2182_PROJECTION: RECESSED 21 CENTIMETERS
 HU2182_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2182_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2182+STABILITY: SURFACE MOTION
 HU2182_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2182+SATELLITE: SATELLITE OBSERVATIONS - 2017
 HU2182
 HU2182  HISTORY     - Date     Condition        Report By
 HU2182  HISTORY     - 1977     MONUMENTED       USGS
 HU2182  HISTORY     - 19900308 GOOD             NGS
 HU2182  HISTORY     - 2017     SEE DESCRIPTION  PROFLN
 HU2182
 HU2182                          STATION DESCRIPTION
 HU2182
 HU2182'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2182'6.2 KM (3.85 MI) NORTHEASTERLY ALONG STATE HIGHWAY 349 FROM ITS
 HU2182'JUNCTION WITH TEXAS ROAD IN BIVALE, 15.6 M (51.18 FT) NORTHWEST OF
 HU2182'AND LEVEL WITH THE CENTERLINE OF THE HIGHWAY, 8.0 M (26.25 FT) NORTH
 HU2182'OF THE CENTER OF SPRY LARMORE ROAD, 0.6 M (1.97 FT) SOUTHEAST OF
 HU2182'UTILITY POLE NUMBER Y 316, AND IN A CONCRETE MONUMENT THAT IS FLUSH
 HU2182'WITH THE GROUND SURFACE.
 HU2182
 HU2182                          STATION RECOVERY (2017)
 HU2182
 HU2182'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2182'RECOVERED PRETTY MUCH AS DESCRIBED.  THE POST IS LEANING A BIT TO THE
 HU2182'NORTHEAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4038 ***********************************************************************
 AE4038  DESIGNATION -  11 SKS
 AE4038  PID         -  AE4038
 AE4038  STATE/COUNTY-  MD/BALTIMORE
 AE4038  COUNTRY     -  US
 AE4038  USGS QUAD   -  MIDDLE RIVER (2016)
 AE4038
 AE4038                         *CURRENT SURVEY CONTROL
 AE4038  ______________________________________________________________________
 AE4038* NAD 83(1986) POSITION- 39 18 03.5    (N) 076 26 16.7    (W)   HD_HELD2
 AE4038* NAVD 88 ORTHO HEIGHT -     6.052 (meters)       19.86  (feet) ADJUSTED
 AE4038  ______________________________________________________________________
 AE4038  GEOID HEIGHT    -        -33.019 (meters)                     GEOID18
 AE4038  DYNAMIC HEIGHT  -          6.049 (meters)       19.85  (feet) COMP
 AE4038  MODELED GRAVITY -    980,108.4   (mgal)                       NAVD 88
 AE4038
 AE4038  VERT ORDER      -  THIRD
 AE4038
 AE4038.The horizontal coordinates were established by autonomous hand held GPS
 AE4038.observations and have an estimated accuracy of +/- 10 meters.
 AE4038
 AE4038.The orthometric height was determined by differential leveling and
 AE4038.adjusted by the NATIONAL GEODETIC SURVEY
 AE4038.in February 1998.
 AE4038
 AE4038.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4038.GEOID18 height accuracy estimate available here.
 AE4038
 AE4038.Click photographs - Photos may exist for this station.
 AE4038
 AE4038.The dynamic height is computed by dividing the NAVD 88
 AE4038.geopotential number by the normal gravity value computed on the
 AE4038.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4038.degrees latitude (g = 980.6199 gals.).
 AE4038
 AE4038.The modeled gravity was interpolated from observed gravity values.
 AE4038
 AE4038;                    North         East    Units  Estimated Accuracy
 AE4038;SPC MD       -   181,568.      448,478.      MT  (+/- 10 meters HH2 GPS)
 AE4038
 AE4038_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7601051162(NAD 83)
 AE4038
 AE4038                          SUPERSEDED SURVEY CONTROL
 AE4038
 AE4038.No superseded survey control is available for this station.
 AE4038
 AE4038_MARKER: DD = SURVEY DISK
 AE4038_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AE4038_SP_SET: INLET
 AE4038_STAMPING: 21 11 SKS 1966
 AE4038_MARK LOGO: USGS
 AE4038_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE4038_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4038+STABILITY: SURFACE MOTION
 AE4038_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4038+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2010
 AE4038
 AE4038  HISTORY     - Date     Condition        Report By
 AE4038  HISTORY     - 1966     MONUMENTED       USGS
 AE4038  HISTORY     - 19950223 GOOD             MCCRON
 AE4038  HISTORY     - 20100224 GOOD             MD-005
 AE4038
 AE4038                          STATION DESCRIPTION
 AE4038
 AE4038'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4038'STATION IS LOCATED ABOUT 2.1 MI (3.4 KM) SOUTHEAST OF ESSEX. TO REACH
 AE4038'STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO ROUTE 702 (SOUTHEAST
 AE4038'BLVD) .  FROM THE ROUTE 702 OVERPASS OVER EASTERN BLVD GO SOUTH ON
 AE4038'ROUTE 702 FOR 1.6 MI (2.6 KM) TO HYDE PARK ROAD.  TURN LEFT ON HYDE
 AE4038'PARK ROAD AND GO NORTHEAST FOR 0.1 MI (0.2 KM) TO BACK RIVER NECK ROAD
 AE4038'AND STATION ON THE LEFT. STATION MARK IS SET IN TOP OF CONCRETE STORM
 AE4038'DRAIN INLET.  IT IS 43.6 FT (13.3 M) SOUTHWEST OF THE CENTERLINE OF
 AE4038'BACK RIVER NECK ROAD, 43.0 FT (13.1 M) NORTHWEST OF THE CENTERLINE OF
 AE4038'HYDE PARK ROAD, 40.3 FT (12.3 M) WEST OF THE CENTERLINE OF A WATER
 AE4038'VALVE MANHOLE.
 AE4038
 AE4038                          STATION RECOVERY (2010)
 AE4038
 AE4038'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2010 (ATA)
 AE4038'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2010 (ATA).
 AE4038'THE STATION IS LOCATED AT THE WEST CORNER OF THE INTERSECTION OF BACK
 AE4038'RIVER NECK ROAD AND MARLYN AVENUE (A.K.A. HYDE PARK ROAD). IT IS 40.3
 AE4038'FEET NORTHWEST OF A WATER VALVE, 14.7 FEET SOUTHWEST OF A STORM DRAIN
 AE4038'MANHOLE AND 44.8 FEET NORTH OF ANOTHER STORM DRAIN MANHOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1363 ***********************************************************************
 HV1363  DESIGNATION -  1103 WSSC
 HV1363  PID         -  HV1363
 HV1363  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1363  COUNTRY     -  US
 HV1363  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1363
 HV1363                         *CURRENT SURVEY CONTROL
 HV1363  ______________________________________________________________________
 HV1363* NAD 83(1986) POSITION- 38 56 40.     (N) 076 58 30.     (W)   SCALED
 HV1363* NAVD 88 ORTHO HEIGHT -    18.17  (+/-2cm)       59.6   (feet) VERTCON3
 HV1363  ______________________________________________________________________
 HV1363  GEOID HEIGHT    -        -32.093 (meters)                     GEOID18
 HV1363  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1363
 HV1363.The horizontal coordinates were scaled from a map and have
 HV1363.an estimated accuracy of +/- 6 seconds.
 HV1363
 HV1363.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1363.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1363
 HV1363.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1363.GEOID18 height accuracy estimate available here.
 HV1363
 HV1363.The vertical order pertains to the NGVD 29 superseded value.
 HV1363
 HV1363.Click photographs - Photos may exist for this station.
 HV1363
 HV1363;                    North         East    Units  Estimated Accuracy
 HV1363;SPC MD       -   141,840.      402,170.      MT  (+/- 180 meters Scaled)
 HV1363
 HV1363_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ288124(NAD 83)
 HV1363
 HV1363                          SUPERSEDED SURVEY CONTROL
 HV1363
 HV1363  NGVD 29 (11/26/84)   18.394  (m)           60.35   (f) ADJUSTED    2 0
 HV1363
 HV1363.Superseded values are not recommended for survey control.
 HV1363
 HV1363.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1363.See file dsdata.pdf to determine how the superseded data were derived.
 HV1363
 HV1363_MARKER: Z = SEE DESCRIPTION
 HV1363_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1363_SP_SET: BOUNDARY STONE
 HV1363_STAMPING: WSSC 1103
 HV1363_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1363
 HV1363  HISTORY     - Date     Condition        Report By
 HV1363  HISTORY     - UNK      MONUMENTED       WSSC
 HV1363  HISTORY     - 1944     GOOD             WSSC
 HV1363
 HV1363                          STATION DESCRIPTION
 HV1363
 HV1363'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1363'AT NORTH WOODRIDGE.
 HV1363'ON EASTERN AVENUE, 0.2 MILE SOUTHEAST OF QUEENS CHAPEL ROAD,
 HV1363'AT MD.-D.C. BOUNDARY STONE 5, AND IN THE NORTHWEST SIDE OF
 HV1363'THE STONE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1365 ***********************************************************************
 HV1365  DESIGNATION -  1104 WSSC
 HV1365  PID         -  HV1365
 HV1365  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1365  COUNTRY     -  US
 HV1365  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1365
 HV1365                         *CURRENT SURVEY CONTROL
 HV1365  ______________________________________________________________________
 HV1365* NAD 83(1986) POSITION- 38 56 47.     (N) 076 58 39.     (W)   SCALED
 HV1365* NAVD 88 ORTHO HEIGHT -    26.22  (+/-2cm)       86.0   (feet) VERTCON3
 HV1365  ______________________________________________________________________
 HV1365  GEOID HEIGHT    -        -32.085 (meters)                     GEOID18
 HV1365  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1365
 HV1365.The horizontal coordinates were scaled from a map and have
 HV1365.an estimated accuracy of +/- 6 seconds.
 HV1365
 HV1365.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1365.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1365
 HV1365.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1365.GEOID18 height accuracy estimate available here.
 HV1365
 HV1365.The vertical order pertains to the NGVD 29 superseded value.
 HV1365
 HV1365.Click photographs - Photos may exist for this station.
 HV1365
 HV1365;                    North         East    Units  Estimated Accuracy
 HV1365;SPC MD       -   142,060.      401,950.      MT  (+/- 180 meters Scaled)
 HV1365
 HV1365_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ286126(NAD 83)
 HV1365
 HV1365                          SUPERSEDED SURVEY CONTROL
 HV1365
 HV1365  NGVD 29 (11/26/84)   26.443  (m)           86.76   (f) ADJUSTED    2 0
 HV1365
 HV1365.Superseded values are not recommended for survey control.
 HV1365
 HV1365.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1365.See file dsdata.pdf to determine how the superseded data were derived.
 HV1365
 HV1365_MARKER: Z = SEE DESCRIPTION
 HV1365_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1365_SP_SET: BRICK HOUSE
 HV1365_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1365
 HV1365  HISTORY     - Date     Condition        Report By
 HV1365  HISTORY     - UNK      MONUMENTED       WSSC
 HV1365  HISTORY     - 1944     GOOD             WSSC
 HV1365
 HV1365                          STATION DESCRIPTION
 HV1365
 HV1365'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1365'AT NORTH WOODRIDGE.
 HV1365'ON LA SALLE ROAD, 140 FEET NORTH OF QUEENS CHAPEL ROAD, ABOUT
 HV1365'100 FEET NORTHEAST OF THE MD.-D.C. LINE, ON THE NORTH SIDE OF
 HV1365'LA SALLE ROAD, AND AT THE SOUTHEAST CORNER OF A BRICK HOUSE.
 HV1365'NOTE-- ORIGINAL DESCRIPTION STATES THAT THIS MARK IS ON THE
 HV1365'SOUTH SIDE OF LA SALLE ROAD, AND AT THE NORTHEAST CORNER OF THE
 HV1365'BRICK HOUSE.  SKETCH FURNISHED CONTRADICTS THIS.  NOTE-- THE
 HV1365'CHARACTER OF THIS MARK IS UNKNOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1369 ***********************************************************************
 HV1369  DESIGNATION -  1105 WSSC
 HV1369  PID         -  HV1369
 HV1369  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1369  COUNTRY     -  US
 HV1369  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1369
 HV1369                         *CURRENT SURVEY CONTROL
 HV1369  ______________________________________________________________________
 HV1369* NAD 83(1986) POSITION- 38 57 14.     (N) 076 58 44.     (W)   SCALED
 HV1369* NAVD 88 ORTHO HEIGHT -    26.13  (+/-2cm)       85.7   (feet) VERTCON3
 HV1369  ______________________________________________________________________
 HV1369  GEOID HEIGHT    -        -32.074 (meters)                     GEOID18
 HV1369  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1369
 HV1369.The horizontal coordinates were scaled from a map and have
 HV1369.an estimated accuracy of +/- 6 seconds.
 HV1369
 HV1369.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1369.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1369
 HV1369.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1369.GEOID18 height accuracy estimate available here.
 HV1369
 HV1369.The vertical order pertains to the NGVD 29 superseded value.
 HV1369
 HV1369.Click photographs - Photos may exist for this station.
 HV1369
 HV1369;                    North         East    Units  Estimated Accuracy
 HV1369;SPC MD       -   142,890.      401,830.      MT  (+/- 180 meters Scaled)
 HV1369
 HV1369_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ285135(NAD 83)
 HV1369
 HV1369                          SUPERSEDED SURVEY CONTROL
 HV1369
 HV1369  NGVD 29 (11/26/84)   26.355  (m)           86.47   (f) ADJUSTED    2 0
 HV1369
 HV1369.Superseded values are not recommended for survey control.
 HV1369
 HV1369.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1369.See file dsdata.pdf to determine how the superseded data were derived.
 HV1369
 HV1369_MARKER: B = BOLT
 HV1369_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1369_SP_SET: CHIMNEY
 HV1369_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1369
 HV1369  HISTORY     - Date     Condition        Report By
 HV1369  HISTORY     - UNK      MONUMENTED       WSSC
 HV1369  HISTORY     - 1944     GOOD             WSSC
 HV1369
 HV1369                          STATION DESCRIPTION
 HV1369
 HV1369'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1369'AT AVONDALE.
 HV1369'ON CHILLUM ROAD, ABOUT 900 FEET SOUTHEAST OF A BRIDGE OVER A
 HV1369'SMALL STREAM, ABOUT 100 FEET WEST OF THE JUNCTION OF LA SALLE
 HV1369'ROAD, ON THE NORTH SIDE OF CHILLUM ROAD, ON THE SOUTHEAST SIDE
 HV1369'OF A BROWN BRICK HOUSE, AND IN THE FACE OF THE CHIMNEY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3237 ***********************************************************************
 JV3237  DESIGNATION -  1105+27
 JV3237  PID         -  JV3237
 JV3237  STATE/COUNTY-  MD/WASHINGTON
 JV3237  COUNTRY     -  US
 JV3237  USGS QUAD   -  FUNKSTOWN (2017)
 JV3237
 JV3237                         *CURRENT SURVEY CONTROL
 JV3237  ______________________________________________________________________
 JV3237* NAD 83(1986) POSITION- 39 36 10.     (N) 077 43 31.     (W)   SCALED
 JV3237* NAVD 88 ORTHO HEIGHT -   148.495 (meters)      487.19  (feet) ADJUSTED
 JV3237  ______________________________________________________________________
 JV3237  GEOID HEIGHT    -        -34.090 (meters)                     GEOID18
 JV3237  DYNAMIC HEIGHT  -        148.408 (meters)      486.90  (feet) COMP
 JV3237  MODELED GRAVITY -    980,035.1   (mgal)                       NAVD 88
 JV3237
 JV3237  VERT ORDER      -  FIRST     CLASS II
 JV3237
 JV3237.The horizontal coordinates were scaled from a map and have
 JV3237.an estimated accuracy of +/- 6 seconds.
 JV3237
 JV3237.The orthometric height was determined by differential leveling and
 JV3237.adjusted by the NATIONAL GEODETIC SURVEY
 JV3237.in June 1991.
 JV3237
 JV3237.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3237.GEOID18 height accuracy estimate available here.
 JV3237
 JV3237.Click photographs - Photos may exist for this station.
 JV3237
 JV3237.The dynamic height is computed by dividing the NAVD 88
 JV3237.geopotential number by the normal gravity value computed on the
 JV3237.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3237.degrees latitude (g = 980.6199 gals.).
 JV3237
 JV3237.The modeled gravity was interpolated from observed gravity values.
 JV3237
 JV3237;                    North         East    Units  Estimated Accuracy
 JV3237;SPC MD       -   215,170.      337,710.      MT  (+/- 180 meters Scaled)
 JV3237
 JV3237_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ660872(NAD 83)
 JV3237
 JV3237                          SUPERSEDED SURVEY CONTROL
 JV3237
 JV3237  NGVD 29 (11/26/84)  148.699  (m)          487.86   (f) ADJUSTED    1 2
 JV3237
 JV3237.Superseded values are not recommended for survey control.
 JV3237
 JV3237.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3237.See file dsdata.pdf to determine how the superseded data were derived.
 JV3237
 JV3237_MARKER: Q = CHISELED SQUARE
 JV3237_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV3237_SP_SET: CULVERT
 JV3237_MARK LOGO: BORR
 JV3237_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3237
 JV3237  HISTORY     - Date     Condition        Report By
 JV3237  HISTORY     - UNK      MONUMENTED       BORR
 JV3237  HISTORY     - 1934     GOOD             CGS
 JV3237
 JV3237                          STATION DESCRIPTION
 JV3237
 JV3237'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JV3237'3.6 MI S FROM HAGERSTOWN.
 JV3237'3.6 MILES SOUTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV3237'THE PASSENGER STATION AT HAGERSTOWN, WASHINGTON COUNTY, 22-1/2
 JV3237'POLES NORTH OF A ROAD CROSSING AT FIERY SIDING, 35 FEET NORTH OF
 JV3237'MILEPOST H 3 W 21, AT A STONE BOX CULVERT, AND ON THE SOUTH END
 JV3237'OF THE EAST HEADWALL.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1268 ***********************************************************************
 HV1268  DESIGNATION -  1109 WSSC
 HV1268  PID         -  HV1268
 HV1268  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1268  COUNTRY     -  US
 HV1268  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1268
 HV1268                         *CURRENT SURVEY CONTROL
 HV1268  ______________________________________________________________________
 HV1268* NAD 83(1986) POSITION- 38 56 05.     (N) 076 57 20.     (W)   SCALED
 HV1268* NAVD 88 ORTHO HEIGHT -    10.290 (meters)       33.76  (feet) ADJUSTED
 HV1268  ______________________________________________________________________
 HV1268  GEOID HEIGHT    -        -32.153 (meters)                     GEOID18
 HV1268  DYNAMIC HEIGHT  -         10.285 (meters)       33.74  (feet) COMP
 HV1268  MODELED GRAVITY -    980,103.9   (mgal)                       NAVD 88
 HV1268
 HV1268  VERT ORDER      -  FIRST     CLASS I
 HV1268
 HV1268.The horizontal coordinates were scaled from a map and have
 HV1268.an estimated accuracy of +/- 6 seconds.
 HV1268
 HV1268.The orthometric height was determined by differential leveling and
 HV1268.adjusted by the NATIONAL GEODETIC SURVEY
 HV1268.in June 1991.
 HV1268
 HV1268.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1268.GEOID18 height accuracy estimate available here.
 HV1268
 HV1268.Click photographs - Photos may exist for this station.
 HV1268
 HV1268.The dynamic height is computed by dividing the NAVD 88
 HV1268.geopotential number by the normal gravity value computed on the
 HV1268.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1268.degrees latitude (g = 980.6199 gals.).
 HV1268
 HV1268.The modeled gravity was interpolated from observed gravity values.
 HV1268
 HV1268;                    North         East    Units  Estimated Accuracy
 HV1268;SPC MD       -   140,760.      403,850.      MT  (+/- 180 meters Scaled)
 HV1268
 HV1268_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ305113(NAD 83)
 HV1268
 HV1268                          SUPERSEDED SURVEY CONTROL
 HV1268
 HV1268  NGVD 29 (11/26/84)   10.522  (m)           34.52   (f) ADJUSTED    1 1
 HV1268
 HV1268.Superseded values are not recommended for survey control.
 HV1268
 HV1268.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1268.See file dsdata.pdf to determine how the superseded data were derived.
 HV1268
 HV1268_MARKER: Z = SEE DESCRIPTION
 HV1268_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1268_SP_SET: CULVERT
 HV1268_STAMPING: 1109 WSSC
 HV1268_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1268
 HV1268  HISTORY     - Date     Condition        Report By
 HV1268  HISTORY     - UNK      MONUMENTED       WSSC
 HV1268  HISTORY     - 1971     GOOD             NGS
 HV1268
 HV1268                          STATION DESCRIPTION
 HV1268
 HV1268'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1268'AT MOUNT RAINIER.
 HV1268'AT MOUNT RAINIER, ABOUT 0.15 MILE SOUTHEAST ALONG 38TH STREET
 HV1268'FROM THE INTERSECTION OF U.S. HIGHWAY 1, THENCE 0.2 MILE
 HV1268'SOUTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD, SET IN THE TOP
 HV1268'OF THE NORTH END OF THE WEST CONCRETE HEADWALL OF A CULVERT UNDER
 HV1268'THE TRACKS, 40 FEET NORTHWEST OF THE NORTHWEST RAIL OF THE
 HV1268'NORTHWEST TRACK, 65 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE
 HV1268'CITY GARAGE BUILDING, AND ABOUT 18 FEET BELOW THE LEVEL OF THE
 HV1268'TRACKS. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1265 ***********************************************************************
 HV1265  DESIGNATION -  1110 WSSC
 HV1265  PID         -  HV1265
 HV1265  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1265  COUNTRY     -  US
 HV1265  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1265
 HV1265                         *CURRENT SURVEY CONTROL
 HV1265  ______________________________________________________________________
 HV1265* NAD 83(1986) POSITION- 38 56 15.     (N) 076 57 11.     (W)   SCALED
 HV1265* NAVD 88 ORTHO HEIGHT -    15.511 (meters)       50.89  (feet) ADJUSTED
 HV1265  ______________________________________________________________________
 HV1265  GEOID HEIGHT    -        -32.155 (meters)                     GEOID18
 HV1265  DYNAMIC HEIGHT  -         15.502 (meters)       50.86  (feet) COMP
 HV1265  MODELED GRAVITY -    980,103.8   (mgal)                       NAVD 88
 HV1265
 HV1265  VERT ORDER      -  FIRST     CLASS II
 HV1265
 HV1265.The horizontal coordinates were scaled from a map and have
 HV1265.an estimated accuracy of +/- 6 seconds.
 HV1265
 HV1265.The orthometric height was determined by differential leveling and
 HV1265.adjusted by the NATIONAL GEODETIC SURVEY
 HV1265.in June 1991.
 HV1265
 HV1265.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1265.GEOID18 height accuracy estimate available here.
 HV1265
 HV1265.Click photographs - Photos may exist for this station.
 HV1265
 HV1265.The dynamic height is computed by dividing the NAVD 88
 HV1265.geopotential number by the normal gravity value computed on the
 HV1265.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1265.degrees latitude (g = 980.6199 gals.).
 HV1265
 HV1265.The modeled gravity was interpolated from observed gravity values.
 HV1265
 HV1265;                    North         East    Units  Estimated Accuracy
 HV1265;SPC MD       -   141,070.      404,070.      MT  (+/- 180 meters Scaled)
 HV1265
 HV1265_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ307116(NAD 83)
 HV1265
 HV1265                          SUPERSEDED SURVEY CONTROL
 HV1265
 HV1265  NGVD 29 (11/26/84)   15.739  (m)           51.64   (f) ADJUSTED    1 2
 HV1265
 HV1265.Superseded values are not recommended for survey control.
 HV1265
 HV1265.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1265.See file dsdata.pdf to determine how the superseded data were derived.
 HV1265
 HV1265_MARKER: Z = SEE DESCRIPTION
 HV1265_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1265_SP_SET: PIER
 HV1265_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1265
 HV1265  HISTORY     - Date     Condition        Report By
 HV1265  HISTORY     - UNK      MONUMENTED       WSSC
 HV1265  HISTORY     - 1942     GOOD             CGS
 HV1265  HISTORY     - 1971     GOOD             WSSC
 HV1265
 HV1265                          STATION DESCRIPTION
 HV1265
 HV1265'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1265'AT COTTAGE CITY.
 HV1265'AT COTTAGE CITY, PRINCE GEORGES COUNTY, ON THE BALTIMORE AND OHIO
 HV1265'RAILROAD, AT THE BARNEY STREET OVERPASS, IN THE SOUTHEAST CORNER
 HV1265'OF THE SOUTHMOST CONCRETE BASE OF THE STEEL PIER ON THE WEST SIDE
 HV1265'OF THE TRACK, 4 FEET WEST OF THE WEST RAIL, AND ABOUT 2 FEET
 HV1265'HIGHER THAN THE TOP OF THE RAIL.  A WASHINGTON SUBURBAN SANITARY
 HV1265'DISTRICT COPPER LAG SCREW AND WASHER.
 HV1265
 HV1265                          STATION RECOVERY (1971)
 HV1265
 HV1265'RECOVERY NOTE BY WASH SUBURB SAN COMM 1971
 HV1265'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1264 ***********************************************************************
 HV1264  DESIGNATION -  1112 WSSC
 HV1264  PID         -  HV1264
 HV1264  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1264  COUNTRY     -  US
 HV1264  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1264
 HV1264                         *CURRENT SURVEY CONTROL
 HV1264  ______________________________________________________________________
 HV1264* NAD 83(1986) POSITION- 38 56 29.     (N) 076 56 59.     (W)   SCALED
 HV1264* NAVD 88 ORTHO HEIGHT -    12.284 (meters)       40.30  (feet) ADJUSTED
 HV1264  ______________________________________________________________________
 HV1264  GEOID HEIGHT    -        -32.157 (meters)                     GEOID18
 HV1264  DYNAMIC HEIGHT  -         12.277 (meters)       40.28  (feet) COMP
 HV1264  MODELED GRAVITY -    980,103.7   (mgal)                       NAVD 88
 HV1264
 HV1264  VERT ORDER      -  FIRST     CLASS II
 HV1264
 HV1264.The horizontal coordinates were scaled from a map and have
 HV1264.an estimated accuracy of +/- 6 seconds.
 HV1264
 HV1264.The orthometric height was determined by differential leveling and
 HV1264.adjusted by the NATIONAL GEODETIC SURVEY
 HV1264.in June 1991.
 HV1264
 HV1264.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1264.GEOID18 height accuracy estimate available here.
 HV1264
 HV1264.Click photographs - Photos may exist for this station.
 HV1264
 HV1264.The dynamic height is computed by dividing the NAVD 88
 HV1264.geopotential number by the normal gravity value computed on the
 HV1264.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1264.degrees latitude (g = 980.6199 gals.).
 HV1264
 HV1264.The modeled gravity was interpolated from observed gravity values.
 HV1264
 HV1264;                    North         East    Units  Estimated Accuracy
 HV1264;SPC MD       -   141,500.      404,360.      MT  (+/- 180 meters Scaled)
 HV1264
 HV1264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ310120(NAD 83)
 HV1264
 HV1264                          SUPERSEDED SURVEY CONTROL
 HV1264
 HV1264  NGVD 29 (11/26/84)   12.512  (m)           41.05   (f) ADJUSTED    1 2
 HV1264
 HV1264.Superseded values are not recommended for survey control.
 HV1264
 HV1264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1264.See file dsdata.pdf to determine how the superseded data were derived.
 HV1264
 HV1264_MARKER: Z = SEE DESCRIPTION
 HV1264_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1264_SP_SET: CONC BATTERY WELL
 HV1264_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1264
 HV1264  HISTORY     - Date     Condition        Report By
 HV1264  HISTORY     - UNK      MONUMENTED       WSSC
 HV1264  HISTORY     - 1942     GOOD             CGS
 HV1264  HISTORY     - 1971     MARK NOT FOUND   WSSC
 HV1264
 HV1264                          STATION DESCRIPTION
 HV1264
 HV1264'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1264'AT COTTAGE CITY.
 HV1264'AT COTTAGE CITY, PRINCE GEORGES COUNTY, ON THE BALTIMORE AND OHIO
 HV1264'RAILROAD, AT SIGNAL E 34-2, IN THE TOP OF THE EAST SIDE OF THE
 HV1264'CONCRETE BATTERY WELL, 12 FEET EAST OF THE EAST RAIL, AND LEVEL
 HV1264'WITH THE BASE OF THE RAIL.  A WASHINGTON SUBURBAN SANITARY
 HV1264'DISTRICT COPPE LAG SCREW AND WASHER.
 HV1264
 HV1264                          STATION RECOVERY (1971)
 HV1264
 HV1264'RECOVERY NOTE BY WASH SUBURB SAN COMM 1971
 HV1264'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1263 ***********************************************************************
 HV1263  DESIGNATION -  1113 WSSC
 HV1263  PID         -  HV1263
 HV1263  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1263  COUNTRY     -  US
 HV1263  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1263
 HV1263                         *CURRENT SURVEY CONTROL
 HV1263  ______________________________________________________________________
 HV1263* NAD 83(1986) POSITION- 38 56 42.     (N) 076 56 46.     (W)   SCALED
 HV1263* NAVD 88 ORTHO HEIGHT -    11.292 (meters)       37.05  (feet) ADJUSTED
 HV1263  ______________________________________________________________________
 HV1263  GEOID HEIGHT    -        -32.161 (meters)                     GEOID18
 HV1263  DYNAMIC HEIGHT  -         11.286 (meters)       37.03  (feet) COMP
 HV1263  MODELED GRAVITY -    980,103.6   (mgal)                       NAVD 88
 HV1263
 HV1263  VERT ORDER      -  FIRST     CLASS I
 HV1263
 HV1263.The horizontal coordinates were scaled from a map and have
 HV1263.an estimated accuracy of +/- 6 seconds.
 HV1263
 HV1263.The orthometric height was determined by differential leveling and
 HV1263.adjusted by the NATIONAL GEODETIC SURVEY
 HV1263.in June 1991.
 HV1263
 HV1263.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1263.GEOID18 height accuracy estimate available here.
 HV1263
 HV1263.Click photographs - Photos may exist for this station.
 HV1263
 HV1263.The dynamic height is computed by dividing the NAVD 88
 HV1263.geopotential number by the normal gravity value computed on the
 HV1263.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1263.degrees latitude (g = 980.6199 gals.).
 HV1263
 HV1263.The modeled gravity was interpolated from observed gravity values.
 HV1263
 HV1263;                    North         East    Units  Estimated Accuracy
 HV1263;SPC MD       -   141,900.      404,670.      MT  (+/- 180 meters Scaled)
 HV1263
 HV1263_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ313124(NAD 83)
 HV1263
 HV1263                          SUPERSEDED SURVEY CONTROL
 HV1263
 HV1263  NGVD 29 (11/26/84)   11.521  (m)           37.80   (f) ADJUSTED    1 1
 HV1263
 HV1263.Superseded values are not recommended for survey control.
 HV1263
 HV1263.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1263.See file dsdata.pdf to determine how the superseded data were derived.
 HV1263
 HV1263_MARKER: Z = SEE DESCRIPTION
 HV1263_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1263_SP_SET: BRIDGE CURBING
 HV1263_STAMPING: 1113 WSSC
 HV1263_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1263
 HV1263  HISTORY     - Date     Condition        Report By
 HV1263  HISTORY     - UNK      MONUMENTED       WSSC
 HV1263  HISTORY     - 1971     GOOD             NGS
 HV1263
 HV1263                          STATION DESCRIPTION
 HV1263
 HV1263'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1263'0.6 MI SW FROM HYATTSVILLE.
 HV1263'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 1 FROM THE JUNCTION
 HV1263'OF ALTERNATE U.S. HIGHWAY 1 AT HYATTSVILLE, SET IN THE TOP AND
 HV1263'0.5 FOOT SOUTHWEST OF THE NORTHEAST CORNER OF THE SOUTHEAST
 HV1263'CURBING ON THE BALTIMORE AND OHIO RAILROAD BRIDGE OVER THE
 HV1263'NORTHWEST BRANCH OF THE ANACOSTIA RIVER, 5 FEET SOUTHEAST OF THE
 HV1263'SOUTHEAST RAIL OF THE SOUTHEAST TRACK, AND ABOUT 1 FOOT BELOW THE
 HV1263'LEVEL OF THE TRACK. LAG SCREW AND WASHER. NOTE-- THIS MARK IS ALSO
 HV1263'0.9 MI NE ALONG U S HWY 1 FROM THE POST OFFICE AT MOUNT RAINIER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1259 ***********************************************************************
 HV1259  DESIGNATION -  1116 WSSC
 HV1259  PID         -  HV1259
 HV1259  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1259  COUNTRY     -  US
 HV1259  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1259
 HV1259                         *CURRENT SURVEY CONTROL
 HV1259  ______________________________________________________________________
 HV1259* NAD 83(1986) POSITION- 38 57 28.     (N) 076 56 14.     (W)   SCALED
 HV1259* NAVD 88 ORTHO HEIGHT -    17.207 (meters)       56.45  (feet) ADJUSTED
 HV1259  ______________________________________________________________________
 HV1259  GEOID HEIGHT    -        -32.164 (meters)                     GEOID18
 HV1259  DYNAMIC HEIGHT  -         17.198 (meters)       56.42  (feet) COMP
 HV1259  MODELED GRAVITY -    980,103.8   (mgal)                       NAVD 88
 HV1259
 HV1259  VERT ORDER      -  FIRST     CLASS I
 HV1259
 HV1259.The horizontal coordinates were scaled from a map and have
 HV1259.an estimated accuracy of +/- 6 seconds.
 HV1259
 HV1259.The orthometric height was determined by differential leveling and
 HV1259.adjusted by the NATIONAL GEODETIC SURVEY
 HV1259.in June 1991.
 HV1259
 HV1259.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1259.GEOID18 height accuracy estimate available here.
 HV1259
 HV1259.Click photographs - Photos may exist for this station.
 HV1259
 HV1259.The dynamic height is computed by dividing the NAVD 88
 HV1259.geopotential number by the normal gravity value computed on the
 HV1259.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1259.degrees latitude (g = 980.6199 gals.).
 HV1259
 HV1259.The modeled gravity was interpolated from observed gravity values.
 HV1259
 HV1259;                    North         East    Units  Estimated Accuracy
 HV1259;SPC MD       -   143,320.      405,440.      MT  (+/- 180 meters Scaled)
 HV1259
 HV1259_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ321138(NAD 83)
 HV1259
 HV1259                          SUPERSEDED SURVEY CONTROL
 HV1259
 HV1259  NGVD 29 (11/26/84)   17.439  (m)           57.21   (f) ADJUSTED    1 1
 HV1259
 HV1259.Superseded values are not recommended for survey control.
 HV1259
 HV1259.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1259.See file dsdata.pdf to determine how the superseded data were derived.
 HV1259
 HV1259_MARKER: Z = SEE DESCRIPTION
 HV1259_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1259_SP_SET: STEPS
 HV1259_STAMPING: 1116 WSSC
 HV1259_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1259
 HV1259  HISTORY     - Date     Condition        Report By
 HV1259  HISTORY     - UNK      MONUMENTED       WSSC
 HV1259  HISTORY     - 1971     GOOD             NGS
 HV1259
 HV1259                          STATION DESCRIPTION
 HV1259
 HV1259'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1259'AT RIVERDALE.
 HV1259'AT RIVERDALE, ABOUT 0.1 MILE EAST ALONG MADISON AVENUE FROM THE
 HV1259'INTERSECTION OF U.S. HIGHWAY 1, SET IN THE TOP OF THE EAST
 HV1259'END OF THE STEP AT THE NORTHEAST ENTRANCE TO THE POTOMAC POWER
 HV1259'AND ELECTRIC COMPANY STORAGE BUILDING (FORMERLY USED AS AN
 HV1259'OFFICE BUILDING FOR THE COMPANY), 48 1/2 FEET SOUTHWEST OF THE
 HV1259'END OF MADISON STREET, AND ABOUT 1 FOOT ABOVE THE LEVEL OF THE
 HV1259'GROUND. LAG SCREW AND WASHER. NOTE-- THIS MARK IS ALSO 0.6 MI N
 HV1259'ALONG U.S.HWY 1 FROM THE JUNCTION OF ALTERNATE U S HWY 1 AT
 HV1259'HYATTSVILLE, THENCE 0.1 MILE EAST ALONG MADISON AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1257 ***********************************************************************
 HV1257  DESIGNATION -  1117 WSSC
 HV1257  PID         -  HV1257
 HV1257  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1257  COUNTRY     -  US
 HV1257  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1257
 HV1257                         *CURRENT SURVEY CONTROL
 HV1257  ______________________________________________________________________
 HV1257* NAD 83(1986) POSITION- 38 57 44.8    (N) 076 56 07.3    (W)   HD_HELD2
 HV1257* NAVD 88 ORTHO HEIGHT -    18.233 (meters)       59.82  (feet) ADJUSTED
 HV1257  ______________________________________________________________________
 HV1257  GEOID HEIGHT    -        -32.162 (meters)                     GEOID18
 HV1257  DYNAMIC HEIGHT  -         18.223 (meters)       59.79  (feet) COMP
 HV1257  MODELED GRAVITY -    980,104.1   (mgal)                       NAVD 88
 HV1257
 HV1257  VERT ORDER      -  FIRST     CLASS I
 HV1257
 HV1257.The horizontal coordinates were established by autonomous hand held GPS
 HV1257.observations and have an estimated accuracy of +/- 10 meters.
 HV1257
 HV1257.The orthometric height was determined by differential leveling and
 HV1257.adjusted by the NATIONAL GEODETIC SURVEY
 HV1257.in June 1991.
 HV1257
 HV1257.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1257.GEOID18 height accuracy estimate available here.
 HV1257
 HV1257.Click photographs - Photos may exist for this station.
 HV1257
 HV1257.The dynamic height is computed by dividing the NAVD 88
 HV1257.geopotential number by the normal gravity value computed on the
 HV1257.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1257.degrees latitude (g = 980.6199 gals.).
 HV1257
 HV1257.The modeled gravity was interpolated from observed gravity values.
 HV1257
 HV1257;                    North         East    Units  Estimated Accuracy
 HV1257;SPC MD       -   143,839.      405,602.      MT  (+/- 10 meters HH2 GPS)
 HV1257
 HV1257_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3231814390(NAD 83)
 HV1257
 HV1257                          SUPERSEDED SURVEY CONTROL
 HV1257
 HV1257  NGVD 29 (11/26/84)   18.464  (m)           60.58   (f) ADJUSTED    1 1
 HV1257
 HV1257.Superseded values are not recommended for survey control.
 HV1257
 HV1257.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1257.See file dsdata.pdf to determine how the superseded data were derived.
 HV1257
 HV1257_MARKER: Z = SEE DESCRIPTION
 HV1257_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1257_SP_SET: BUILDING
 HV1257_STAMPING: 117 WSSC
 HV1257_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1257_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1257+SATELLITE: SATELLITE OBSERVATIONS - August 08, 2010
 HV1257
 HV1257  HISTORY     - Date     Condition        Report By
 HV1257  HISTORY     - UNK      MONUMENTED       WSSC
 HV1257  HISTORY     - 1971     GOOD             NGS
 HV1257  HISTORY     - 20050115 GOOD             GEOCAC
 HV1257  HISTORY     - 20100808 GOOD             GEOCAC
 HV1257
 HV1257                          STATION DESCRIPTION
 HV1257
 HV1257'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1257'AT RIVERDALE.
 HV1257'AT RIVERDALE, ABOUT 0.2 MILE EAST ALONG QUEENSBURY ROAD FROM THE
 HV1257'INTERSECTION OF U.S. HIGHWAY 1, SET VERTICALLY IN THE NORTH
 HV1257'WALL AND 8 INCHES WEST OF THE NORTHEAST CORNER OF A BRICK
 HV1257'BUILDING, 42 FEET SOUTH OF THE CENTER LINE OF THE ROAD, 32
 HV1257'FEET WEST OF THE WEST RAIL OF THE WEST TRACK, AND ABOUT 1 1/2
 HV1257'FEET ABOVE THE LEVEL OF THE GROUND. LAG SCREW AND WASHER.
 HV1257
 HV1257                          STATION RECOVERY (2005)
 HV1257
 HV1257'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV1257'FOUND AS DESCRIBED IN FACADE OF USED BOOK SHOP AT 4701 QUEENSBURY
 HV1257'ROAD, ON THE SOUTH SIDE OF QUEENSBURY BETWEEN RHODE ISLAND AVENUE AND
 HV1257'THE RAILROAD TRACKS.
 HV1257
 HV1257                          STATION RECOVERY (2010)
 HV1257
 HV1257'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 HV1257'RECOVERED IN GOOD CONDITION. SCREW AND WASHER HAS BEEN PAINTED OVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1253 ***********************************************************************
 HV1253  DESIGNATION -  1118
 HV1253  PID         -  HV1253
 HV1253  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1253  COUNTRY     -  US
 HV1253  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1253
 HV1253                         *CURRENT SURVEY CONTROL
 HV1253  ______________________________________________________________________
 HV1253* NAD 83(1986) POSITION- 38 58 09.     (N) 076 55 56.     (W)   SCALED
 HV1253* NAVD 88 ORTHO HEIGHT -    16.860 (meters)       55.31  (feet) POSTED
 HV1253  ______________________________________________________________________
 HV1253  GEOID HEIGHT    -        -32.160 (meters)                     GEOID18
 HV1253  DYNAMIC HEIGHT  -         16.85  (meters)       55.3   (feet) COMP
 HV1253  MODELED GRAVITY -    980,104.6   (mgal)                       NAVD 88
 HV1253
 HV1253  VERT ORDER      -  * POSTED, SEE BELOW
 HV1253
 HV1253.The horizontal coordinates were scaled from a map and have
 HV1253.an estimated accuracy of +/- 6 seconds.
 HV1253
 HV1253.The orthometric height was determined by differential leveling
 HV1253.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV1253
 HV1253.* This is a POSTED BENCH MARK height.
 HV1253
 HV1253.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1253.GEOID18 height accuracy estimate available here.
 HV1253
 HV1253.Click photographs - Photos may exist for this station.
 HV1253
 HV1253.The dynamic height is computed by dividing the NAVD 88
 HV1253.geopotential number by the normal gravity value computed on the
 HV1253.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1253.degrees latitude (g = 980.6199 gals.).
 HV1253
 HV1253.The modeled gravity was interpolated from observed gravity values.
 HV1253
 HV1253;                    North         East    Units  Estimated Accuracy
 HV1253;SPC MD       -   144,590.      405,870.      MT  (+/- 180 meters Scaled)
 HV1253
 HV1253_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ326151(NAD 83)
 HV1253
 HV1253                          SUPERSEDED SURVEY CONTROL
 HV1253
 HV1253  NGVD 29 (11/26/84)   17.086  (m)           56.06   (f) ADJUSTED    1 2
 HV1253
 HV1253.Superseded values are not recommended for survey control.
 HV1253
 HV1253.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1253.See file dsdata.pdf to determine how the superseded data were derived.
 HV1253
 HV1253_MARKER: Z = SEE DESCRIPTION
 HV1253_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV1253+WITH SETTING: PAVEMENT
 HV1253_SP_SET: SIGNAL BASE
 HV1253_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1253+STABILITY: SURFACE MOTION
 HV1253
 HV1253  HISTORY     - Date     Condition        Report By
 HV1253  HISTORY     - UNK      MONUMENTED       WSSC
 HV1253  HISTORY     - 1942     GOOD             CGS
 HV1253  HISTORY     - 1971     MARK NOT FOUND   WSSC
 HV1253
 HV1253                          STATION DESCRIPTION
 HV1253
 HV1253'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1253'0.6 MI S FROM COLLEGE PARK.
 HV1253'0.6 MILE SOUTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 HV1253'STATION AT COLLEGE PARK, PRINCE GEORGES COUNTY, AT SIGNAL W
 HV1253'32-1, IN THE NORTHWEST CORNER OF THE CONCRETE BASE, 7 FEET
 HV1253'WEST OF THE WEST RAIL, AND ABOUT 1 FOOT LOWER THAN THE BASE
 HV1253'OF THE RAIL.  A WASHINGTON SUBURBAN SANITARY DISTRICT COPPER
 HV1253'LAG SCREW AND WASHER.
 HV1253
 HV1253                          STATION RECOVERY (1971)
 HV1253
 HV1253'RECOVERY NOTE BY WASH SUBURB SAN COMM 1971
 HV1253'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6230 ***********************************************************************
 JV6230  DESIGNATION -  112 SKS
 JV6230  PID         -  JV6230
 JV6230  STATE/COUNTY-  MD/HARFORD
 JV6230  COUNTRY     -  US
 JV6230  USGS QUAD   -  BEL AIR (2016)
 JV6230
 JV6230                         *CURRENT SURVEY CONTROL
 JV6230  ______________________________________________________________________
 JV6230* NAD 83(1986) POSITION- 39 37 00.     (N) 076 15 30.     (W)   SCALED
 JV6230* NAVD 88 ORTHO HEIGHT -    85.999 (meters)      282.15  (feet) ADJUSTED
 JV6230  ______________________________________________________________________
 JV6230  GEOID HEIGHT    -        -32.816 (meters)                     GEOID18
 JV6230  DYNAMIC HEIGHT  -         85.956 (meters)      282.01  (feet) COMP
 JV6230  MODELED GRAVITY -    980,131.9   (mgal)                       NAVD 88
 JV6230
 JV6230  VERT ORDER      -  FIRST     CLASS II
 JV6230
 JV6230.The horizontal coordinates were scaled from a map and have
 JV6230.an estimated accuracy of +/- 6 seconds.
 JV6230
 JV6230.The orthometric height was determined by differential leveling and
 JV6230.adjusted by the NATIONAL GEODETIC SURVEY
 JV6230.in June 1991.
 JV6230
 JV6230.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6230.GEOID18 height accuracy estimate available here.
 JV6230
 JV6230.Click photographs - Photos may exist for this station.
 JV6230
 JV6230.The dynamic height is computed by dividing the NAVD 88
 JV6230.geopotential number by the normal gravity value computed on the
 JV6230.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6230.degrees latitude (g = 980.6199 gals.).
 JV6230
 JV6230.The modeled gravity was interpolated from observed gravity values.
 JV6230
 JV6230;                    North         East    Units  Estimated Accuracy
 JV6230;SPC MD       -   216,730.      463,690.      MT  (+/- 180 meters Scaled)
 JV6230
 JV6230_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ919859(NAD 83)
 JV6230
 JV6230                          SUPERSEDED SURVEY CONTROL
 JV6230
 JV6230.No superseded survey control is available for this station.
 JV6230
 JV6230_MARKER: DB = BENCH MARK DISK
 JV6230_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6230_SP_SET: HEADWALL
 JV6230_STAMPING: 283 112 SKS 1953
 JV6230_MARK LOGO: USGS
 JV6230_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6230_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6230+STABILITY: SURFACE MOTION
 JV6230_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6230+SATELLITE: SATELLITE OBSERVATIONS - October 27, 1989
 JV6230
 JV6230  HISTORY     - Date     Condition        Report By
 JV6230  HISTORY     - 1953     MONUMENTED       USGS
 JV6230  HISTORY     - 19891027 GOOD             NGS
 JV6230  HISTORY     - 19980711 GOOD             USPSQD
 JV6230
 JV6230                          STATION DESCRIPTION
 JV6230
 JV6230'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6230'2.5 KM (1.55 MI) SOUTHERLY ALONG STATE HIGHWAY 136 FROM ITS JUNCTION
 JV6230'WITH U.S. HIGHWAY 1 IN POPLAR GROVE, IN TOP OF THE CENTER OF THE
 JV6230'NORTH CONCRETE HEADWALL OF A PIPE CULVERT, 8.3 M (27.2 FT) NORTHWEST
 JV6230'OF THE CENTERLINE OF THE HIGHWAY, 6.5 M (21.3 FT) NORTHEAST OF THE
 JV6230'CENTER OF TRAPPE ROAD, AND 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE
 JV6230'HIGHWAY.
 JV6230
 JV6230                          STATION RECOVERY (1998)
 JV6230
 JV6230'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6230'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1354 ***********************************************************************
 HV1354  DESIGNATION -  1148 WSSC
 HV1354  PID         -  HV1354
 HV1354  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1354  COUNTRY     -  US
 HV1354  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1354
 HV1354                         *CURRENT SURVEY CONTROL
 HV1354  ______________________________________________________________________
 HV1354* NAD 83(1986) POSITION- 38 56 13.     (N) 076 56 49.     (W)   SCALED
 HV1354* NAVD 88 ORTHO HEIGHT -     6.22  (+/-2cm)       20.4   (feet) VERTCON3
 HV1354  ______________________________________________________________________
 HV1354  GEOID HEIGHT    -        -32.172 (meters)                     GEOID18
 HV1354  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1354
 HV1354.The horizontal coordinates were scaled from a map and have
 HV1354.an estimated accuracy of +/- 6 seconds.
 HV1354
 HV1354.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1354.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1354
 HV1354.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1354.GEOID18 height accuracy estimate available here.
 HV1354
 HV1354.The vertical order pertains to the NGVD 29 superseded value.
 HV1354
 HV1354.Click photographs - Photos may exist for this station.
 HV1354
 HV1354;                    North         East    Units  Estimated Accuracy
 HV1354;SPC MD       -   141,010.      404,600.      MT  (+/- 180 meters Scaled)
 HV1354
 HV1354_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ312115(NAD 83)
 HV1354
 HV1354                          SUPERSEDED SURVEY CONTROL
 HV1354
 HV1354  NGVD 29 (11/26/84)    6.455  (m)           21.18   (f) ADJUSTED    2 0
 HV1354
 HV1354.Superseded values are not recommended for survey control.
 HV1354
 HV1354.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1354.See file dsdata.pdf to determine how the superseded data were derived.
 HV1354
 HV1354_MARKER: Z = SEE DESCRIPTION
 HV1354_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1354_SP_SET: BUILDING
 HV1354_STAMPING: WSSC 1148
 HV1354_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1354
 HV1354  HISTORY     - Date     Condition        Report By
 HV1354  HISTORY     - UNK      MONUMENTED       WSSC
 HV1354  HISTORY     - 1944     GOOD             WSSC
 HV1354
 HV1354                          STATION DESCRIPTION
 HV1354
 HV1354'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1354'AT COTTAGE CITY.
 HV1354'IN THE NORTHWEST CORNER OF THE INTERSECTION OF BLADENSBURG ROAD
 HV1354'AND FORTY-SECOND AVENUE, AT THE CALED PRODUCTS CO. BRICK
 HV1354'BUILDING, AND IN THE SOUTH CORNER OF THE BUILDING. LAG SCREW
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1352 ***********************************************************************
 HV1352  DESIGNATION -  1149 WSSC
 HV1352  PID         -  HV1352
 HV1352  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1352  COUNTRY     -  US
 HV1352  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1352
 HV1352                         *CURRENT SURVEY CONTROL
 HV1352  ______________________________________________________________________
 HV1352* NAD 83(1986) POSITION- 38 56 22.     (N) 076 56 31.     (W)   SCALED
 HV1352* NAVD 88 ORTHO HEIGHT -     2.42  (+/-2cm)        7.9   (feet) VERTCON3
 HV1352  ______________________________________________________________________
 HV1352  GEOID HEIGHT    -        -32.180 (meters)                     GEOID18
 HV1352  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1352
 HV1352.The horizontal coordinates were scaled from a map and have
 HV1352.an estimated accuracy of +/- 6 seconds.
 HV1352
 HV1352.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1352.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1352
 HV1352.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1352.GEOID18 height accuracy estimate available here.
 HV1352
 HV1352.The vertical order pertains to the NGVD 29 superseded value.
 HV1352
 HV1352.Click photographs - Photos may exist for this station.
 HV1352
 HV1352;                    North         East    Units  Estimated Accuracy
 HV1352;SPC MD       -   141,290.      405,030.      MT  (+/- 180 meters Scaled)
 HV1352
 HV1352_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ316118(NAD 83)
 HV1352
 HV1352                          SUPERSEDED SURVEY CONTROL
 HV1352
 HV1352  NGVD 29 (11/26/84)    2.646  (m)            8.68   (f) ADJUSTED    2 0
 HV1352
 HV1352.Superseded values are not recommended for survey control.
 HV1352
 HV1352.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1352.See file dsdata.pdf to determine how the superseded data were derived.
 HV1352
 HV1352_MARKER: Z = SEE DESCRIPTION
 HV1352_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1352_SP_SET: MEMORIAL MONUMENT
 HV1352_STAMPING: WSSC 1149
 HV1352_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1352
 HV1352  HISTORY     - Date     Condition        Report By
 HV1352  HISTORY     - UNK      MONUMENTED       WSSC
 HV1352  HISTORY     - 1944     GOOD             WSSC
 HV1352
 HV1352                          STATION DESCRIPTION
 HV1352
 HV1352'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1352'AT BLADENSBURG.
 HV1352'ON DEFENSE HIGHWAY, 100 FEET EAST OF THE OLD WASHINGTON-BALTIMORE
 HV1352'BOULEVARD, AT THE PEACE CROSS MEMORIAL MONUMENT, AND IN THE
 HV1352'SOUTH SIDE OF THE MONUMENT. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0188 ***********************************************************************
 JV0188  DESIGNATION -  116 SKS
 JV0188  PID         -  JV0188
 JV0188  STATE/COUNTY-  MD/HARFORD
 JV0188  COUNTRY     -  US
 JV0188  USGS QUAD   -  BEL AIR (2016)
 JV0188
 JV0188                         *CURRENT SURVEY CONTROL
 JV0188  ______________________________________________________________________
 JV0188* NAD 83(1986) POSITION- 39 33 18.     (N) 076 17 13.     (W)   SCALED
 JV0188* NAVD 88 ORTHO HEIGHT -   121.250 (meters)      397.80  (feet) ADJUSTED
 JV0188  ______________________________________________________________________
 JV0188  GEOID HEIGHT    -        -32.846 (meters)                     GEOID18
 JV0188  DYNAMIC HEIGHT  -        121.189 (meters)      397.60  (feet) COMP
 JV0188  MODELED GRAVITY -    980,123.3   (mgal)                       NAVD 88
 JV0188
 JV0188  VERT ORDER      -  SECOND    CLASS 0
 JV0188
 JV0188.The horizontal coordinates were scaled from a map and have
 JV0188.an estimated accuracy of +/- 6 seconds.
 JV0188
 JV0188.The orthometric height was determined by differential leveling and
 JV0188.adjusted by the NATIONAL GEODETIC SURVEY
 JV0188.in June 1991.
 JV0188
 JV0188.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0188.GEOID18 height accuracy estimate available here.
 JV0188
 JV0188.Click photographs - Photos may exist for this station.
 JV0188
 JV0188.The dynamic height is computed by dividing the NAVD 88
 JV0188.geopotential number by the normal gravity value computed on the
 JV0188.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0188.degrees latitude (g = 980.6199 gals.).
 JV0188
 JV0188.The modeled gravity was interpolated from observed gravity values.
 JV0188
 JV0188;                    North         East    Units  Estimated Accuracy
 JV0188;SPC MD       -   209,860.      461,290.      MT  (+/- 180 meters Scaled)
 JV0188
 JV0188_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ894791(NAD 83)
 JV0188
 JV0188                          SUPERSEDED SURVEY CONTROL
 JV0188
 JV0188  NGVD 29 (11/26/84)  121.485  (m)          398.57   (f) ADJUSTED    2 0
 JV0188
 JV0188.Superseded values are not recommended for survey control.
 JV0188
 JV0188.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0188.See file dsdata.pdf to determine how the superseded data were derived.
 JV0188
 JV0188_MARKER: DD = SURVEY DISK
 JV0188_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0188_STAMPING: 116 SKS 399 1953
 JV0188_MARK LOGO: USGS
 JV0188_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0188+STABILITY: SURFACE MOTION
 JV0188
 JV0188  HISTORY     - Date     Condition        Report By
 JV0188  HISTORY     - 1953     MONUMENTED       USGS
 JV0188  HISTORY     - 1960     GOOD             CGS
 JV0188  HISTORY     - 19971001 GOOD             USPSQD
 JV0188  HISTORY     - 19990828 MARK NOT FOUND   USPSQD
 JV0188  HISTORY     - 19991226 MARK NOT FOUND   USPSQD
 JV0188
 JV0188                          STATION DESCRIPTION
 JV0188
 JV0188'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0188'3.6 MI NE FROM BEL AIR.
 JV0188'ABOUT 3.6 MILES NORTHEAST ALONG STATE HIGHWAY 22 FROM THE
 JV0188'COURTHOUSE AT BEL AIR, AT FULFORD, AT THE INTERSECTION OF STATE
 JV0188'HIGHWAY 154 (THOMAS RUN ROAD) LEADING NORTH AND SCHUCKS CORNERS
 JV0188'ROAD LEADING SOUTH AND SOUTHEAST, 56 FEET NORTHWEST OF THE CENTER
 JV0188'OF THE INTERSECTION, 56 FEET NORTH OF THE CENTER LINE OF STATE
 JV0188'HIGHWAY 22 (CHURCHVILLE ROAD), 25 1/2 FEET WEST OF THE CENTER
 JV0188'LINE OF STATE HIGHWAY 154, 19 1/2 FEET EAST OF POWER LINE POLE
 JV0188'51130, 11 FEET NORTH-NORTHEAST OF MEDICAL HALL HISTORICAL SIGN
 JV0188'POST, 1 1/2 FEET SOUTH OF A FENCE LINE LEADING WEST, 11 1/2
 JV0188'FEET WEST OF FENCE CORNER, 2 FEET WEST OF A STEEL WITNESS POST,
 JV0188'ABOUT LEVEL WITH HIGHWAY 22, AND SET IN TOP OF A CONCRETE POST
 JV0188'PROJECTING 5 INCHES.  NOTE-- THIS MARK CAN BE REACHED BY GOING ABOUT
 JV0188'0.7 MILE NORTH ALONG STATE HIGHWAY 136 FROM THE INTERSECTION OF
 JV0188'STATE HIGHWAY 543 AT CRESSWELL, THENCE ABOUT 3.05 MILES NORTHWEST
 JV0188'ALONG SCHUCKS CORNERS ROAD.
 JV0188
 JV0188                          STATION RECOVERY (1997)
 JV0188
 JV0188'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0188'RECOVERED IN GOOD CONDITION.
 JV0188
 JV0188                          STATION RECOVERY (1999)
 JV0188
 JV0188'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV0188'MARK NOT FOUND.
 JV0188
 JV0188                          STATION RECOVERY (1999)
 JV0188
 JV0188'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV0188'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6321 ***********************************************************************
 JV6321  DESIGNATION -  116 SKS AZ MK
 JV6321  PID         -  JV6321
 JV6321  STATE/COUNTY-  MD/HARFORD
 JV6321  COUNTRY     -  US
 JV6321  USGS QUAD   -  BEL AIR (2016)
 JV6321
 JV6321                         *CURRENT SURVEY CONTROL
 JV6321  ______________________________________________________________________
 JV6321* NAD 83(2011) POSITION- 39 33 18.09898(N) 076 16 56.95842(W)   ADJUSTED
 JV6321* NAD 83(2011) ELLIP HT-    80.120 (meters)        (06/27/12)   ADJUSTED
 JV6321* NAD 83(2011) EPOCH   -  2010.00
 JV6321* NAVD 88 ORTHO HEIGHT -   113.030 (meters)      370.83  (feet) ADJUSTED
 JV6321  ______________________________________________________________________
 JV6321  GEOID HEIGHT    -        -32.853 (meters)                     GEOID18
 JV6321  NAD 83(2011) X  -  1,167,743.050 (meters)                     COMP
 JV6321  NAD 83(2011) Y  - -4,783,919.706 (meters)                     COMP
 JV6321  NAD 83(2011) Z  -  4,040,066.883 (meters)                     COMP
 JV6321  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 JV6321  DYNAMIC HEIGHT  -        112.973 (meters)      370.65  (feet) COMP
 JV6321  MODELED GRAVITY -    980,123.7   (mgal)                       NAVD 88
 JV6321
 JV6321  VERT ORDER      -  FIRST     CLASS II
 JV6321
 JV6321  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6321  Standards:
 JV6321         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6321            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6321  -------------------------------------------------------------------
 JV6321  NETWORK    2.14   5.04           0.92   0.75   2.57      0.50258101
 JV6321  -------------------------------------------------------------------
 JV6321  Click here for local accuracies and other accuracy information.
 JV6321
 JV6321.The horizontal coordinates were established by GPS observations
 JV6321.and adjusted by the National Geodetic Survey in June 2012.
 JV6321
 JV6321.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6321.been affixed to the stable North American tectonic plate. See 
 JV6321.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6321
 JV6321.The horizontal coordinates are valid at the epoch date displayed above
 JV6321.which is a decimal equivalence of Year/Month/Day.
 JV6321
 JV6321.The orthometric height was determined by differential leveling and
 JV6321.adjusted by the NATIONAL GEODETIC SURVEY
 JV6321.in June 1991.
 JV6321
 JV6321.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6321.GEOID18 height accuracy estimate available here.
 JV6321
 JV6321.Click photographs - Photos may exist for this station.
 JV6321
 JV6321.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6321
 JV6321.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6321
 JV6321.The ellipsoidal height was determined by GPS observations
 JV6321.and is referenced to NAD 83.
 JV6321
 JV6321.The dynamic height is computed by dividing the NAVD 88
 JV6321.geopotential number by the normal gravity value computed on the
 JV6321.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6321.degrees latitude (g = 980.6199 gals.).
 JV6321
 JV6321.The modeled gravity was interpolated from observed gravity values.
 JV6321
 JV6321. The following values were computed from the NAD 83(2011) position.
 JV6321
 JV6321;                    North         East     Units Scale Factor Converg.
 JV6321;SPC MD       -   209,866.807   461,667.530   MT  1.00002006   +0 27 01.2
 JV6321;SPC MD       -   688,538.02  1,514,654.22   sFT  1.00002006   +0 27 01.2
 JV6321;UTM  18      - 4,379,156.879   389,818.149   MT  0.99974947   -0 49 00.5
 JV6321
 JV6321!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6321!SPC MD       -   0.99998743  x   1.00002006  =   1.00000749
 JV6321!UTM  18      -   0.99998743  x   0.99974947  =   0.99973690
 JV6321
 JV6321_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8981879156(NAD 83)
 JV6321
 JV6321|---------------------------------------------------------------------|
 JV6321| PID    Reference Object                     Distance      Geod. Az  |
 JV6321|                                                           dddmmss.s |
 JV6321| JV0189 116 SKS RESET                       365.725 METERS 27319     |
 JV6321|---------------------------------------------------------------------|
 JV6321
 JV6321                          SUPERSEDED SURVEY CONTROL
 JV6321
 JV6321  NAD 83(2007)-  39 33 18.09910(N)    076 16 56.95918(W) AD(2002.00) 0
 JV6321  ELLIP H (02/10/07)   80.137  (m)                       GP(2002.00)    
 JV6321  ELLIP H (09/18/02)   80.155  (m)                       GP(       ) 4 2
 JV6321  NAD 83(1991)-  39 33 18.09870(N)    076 16 56.95880(W) AD(       ) 1
 JV6321  ELLIP H (01/27/92)   80.138  (m)                       GP(       ) 4 1
 JV6321  NAD 83(1986)-  39 33 18.09182(N)    076 16 56.96595(W) AD(       ) 1
 JV6321  NGVD 29             113.26   (m)          371.6    (f) LEVELING    3  
 JV6321
 JV6321.Superseded values are not recommended for survey control.
 JV6321
 JV6321.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6321.See file dsdata.pdf to determine how the superseded data were derived.
 JV6321
 JV6321_MARKER: DZ = AZIMUTH MARK DISK
 JV6321_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6321_STAMPING: 41 116 SKS 1989
 JV6321_MARK LOGO: MD-025
 JV6321_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6321_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6321+STABILITY: SURFACE MOTION
 JV6321_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6321+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6321
 JV6321  HISTORY     - Date     Condition        Report By
 JV6321  HISTORY     - 1989     MONUMENTED       RDA
 JV6321  HISTORY     - 19990828 GOOD             USPSQD
 JV6321  HISTORY     - 19991226 GOOD             USPSQD
 JV6321
 JV6321                          STATION DESCRIPTION
 JV6321
 JV6321'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6321'THE STATION IS LOCATED IN EASTERN HARFORD COUNTY, MARYLAND ABOUT 3
 JV6321'MILES NORTHEAST OF BEL AIR.  TO REACH THE STATION FROM THE
 JV6321'INTERSECTION OF STATE HIGHWAY 24 AND STATE HIGHWAY 22 PROCEED
 JV6321'NORTHEAST ALONG HIGHWAY 22 4.25 MILES TO ITS INTERSECTION WITH THOMAS
 JV6321'RUN ROAD AND THE STATION ON THE LEFT SIDE OF THE ROAD ON THE
 JV6321'NORTHWEST CORNER OF THE INTERSECTION.  TO REACH THE AZIMUTH MARK FROM
 JV6321'THE STATION PROCEED NORTHEAST ALONG HIGHWAY 22 0.2 MILES TO THE MARK
 JV6321'ON THE RIGHT.  THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET
 JV6321'IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 41 176 SKS 1989.  THE
 JV6321'MARK IS 67.9 FEET NORTHWEST OF C AND P OF MARYLAND TELEPHONE POLE
 JV6321'NUMBER 116, 4.2 FEET NORTHEAST OF THE NORTHEAST CORNER OF ELECTRIC
 JV6321'FENCE, 45.1 FEET SOUTHWEST FROM THE CENTERLINE OF HIGHWAY 22.
 JV6321
 JV6321                          STATION RECOVERY (1999)
 JV6321
 JV6321'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6321'RECOVERED IN GOOD CONDITION.
 JV6321
 JV6321                          STATION RECOVERY (1999)
 JV6321
 JV6321'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6321'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0189 ***********************************************************************
 JV0189  DESIGNATION -  116 SKS RESET
 JV0189  PID         -  JV0189
 JV0189  STATE/COUNTY-  MD/HARFORD
 JV0189  COUNTRY     -  US
 JV0189  USGS QUAD   -  BEL AIR (2016)
 JV0189
 JV0189                         *CURRENT SURVEY CONTROL
 JV0189  ______________________________________________________________________
 JV0189* NAD 83(2011) POSITION- 39 33 18.78385(N) 076 17 12.25197(W)   ADJUSTED
 JV0189* NAD 83(2011) ELLIP HT-    88.347 (meters)        (06/27/12)   ADJUSTED
 JV0189* NAD 83(2011) EPOCH   -  2010.00
 JV0189* NAVD 88 ORTHO HEIGHT -   121.235 (meters)      397.75  (feet) ADJUSTED
 JV0189  ______________________________________________________________________
 JV0189  GEOID HEIGHT    -        -32.846 (meters)                     GEOID18
 JV0189  NAD 83(2011) X  -  1,167,386.657 (meters)                     COMP
 JV0189  NAD 83(2011) Y  - -4,783,999.370 (meters)                     COMP
 JV0189  NAD 83(2011) Z  -  4,040,088.408 (meters)                     COMP
 JV0189  LAPLACE CORR    -         -3.49  (seconds)                    DEFLEC18
 JV0189  DYNAMIC HEIGHT  -        121.174 (meters)      397.55  (feet) COMP
 JV0189  MODELED GRAVITY -    980,123.3   (mgal)                       NAVD 88
 JV0189
 JV0189  VERT ORDER      -  FIRST     CLASS II
 JV0189
 JV0189  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0189  Standards:
 JV0189         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0189            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0189  -------------------------------------------------------------------
 JV0189  NETWORK    1.72   4.37           0.69   0.67   2.23      0.45747889
 JV0189  -------------------------------------------------------------------
 JV0189  Click here for local accuracies and other accuracy information.
 JV0189
 JV0189.The horizontal coordinates were established by GPS observations
 JV0189.and adjusted by the National Geodetic Survey in June 2012.
 JV0189
 JV0189.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0189.been affixed to the stable North American tectonic plate. See 
 JV0189.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0189
 JV0189.The horizontal coordinates are valid at the epoch date displayed above
 JV0189.which is a decimal equivalence of Year/Month/Day.
 JV0189
 JV0189.The orthometric height was determined by differential leveling and
 JV0189.adjusted by the NATIONAL GEODETIC SURVEY
 JV0189.in June 1991.
 JV0189
 JV0189.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0189.GEOID18 height accuracy estimate available here.
 JV0189
 JV0189.Click photographs - Photos may exist for this station.
 JV0189
 JV0189.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0189
 JV0189.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0189
 JV0189.The ellipsoidal height was determined by GPS observations
 JV0189.and is referenced to NAD 83.
 JV0189
 JV0189.The dynamic height is computed by dividing the NAVD 88
 JV0189.geopotential number by the normal gravity value computed on the
 JV0189.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0189.degrees latitude (g = 980.6199 gals.).
 JV0189
 JV0189.The modeled gravity was interpolated from observed gravity values.
 JV0189
 JV0189. The following values were computed from the NAD 83(2011) position.
 JV0189
 JV0189;                    North         East     Units Scale Factor Converg.
 JV0189;SPC MD       -   209,885.067   461,302.254   MT  1.00002010   +0 26 51.6
 JV0189;SPC MD       -   688,597.92  1,513,455.81   sFT  1.00002010   +0 26 51.6
 JV0189;UTM  18      - 4,379,183.206   389,453.465   MT  0.99975046   -0 49 10.2
 JV0189
 JV0189!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0189!SPC MD       -   0.99998614  x   1.00002010  =   1.00000624
 JV0189!UTM  18      -   0.99998614  x   0.99975046  =   0.99973660
 JV0189
 JV0189_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8945379183(NAD 83)
 JV0189
 JV0189|---------------------------------------------------------------------|
 JV0189| PID    Reference Object                     Distance      Geod. Az  |
 JV0189|                                                           dddmmss.s |
 JV0189| JV6321 116 SKS AZ MK                       365.725 METERS 09319     |
 JV0189|---------------------------------------------------------------------|
 JV0189
 JV0189                          SUPERSEDED SURVEY CONTROL
 JV0189
 JV0189  NAD 83(2007)-  39 33 18.78397(N)    076 17 12.25274(W) AD(2002.00) 0
 JV0189  ELLIP H (02/10/07)   88.365  (m)                       GP(2002.00)    
 JV0189  ELLIP H (09/18/02)   88.383  (m)                       GP(       ) 4 2
 JV0189  NAD 83(1991)-  39 33 18.78359(N)    076 17 12.25233(W) AD(       ) 1
 JV0189  ELLIP H (01/27/92)   88.365  (m)                       GP(       ) 4 1
 JV0189  NAD 83(1986)-  39 33 18.77668(N)    076 17 12.25947(W) AD(       ) 1
 JV0189  NGVD 29 (??/??/??)  121.47   (m)          398.5    (f) RESET       3  
 JV0189  NGVD 29             121.47   (m)          398.5    (f) LEVELING    3  
 JV0189
 JV0189.Superseded values are not recommended for survey control.
 JV0189
 JV0189.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0189.See file dsdata.pdf to determine how the superseded data were derived.
 JV0189
 JV0189_MARKER: DD = SURVEY DISK
 JV0189_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0189_STAMPING: 116 SKS USGS RESET 1966
 JV0189_MARK LOGO: MDSRC
 JV0189_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV0189_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0189+STABILITY: SURFACE MOTION
 JV0189_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0189+SATELLITE: SATELLITE OBSERVATIONS - September 04, 1989
 JV0189
 JV0189  HISTORY     - Date     Condition        Report By
 JV0189  HISTORY     - 1966     MONUMENTED       MDSRC
 JV0189  HISTORY     - 1971     GOOD             NGS
 JV0189  HISTORY     - 19890904 GOOD             RDA
 JV0189  HISTORY     - 19991226 GOOD             USPSQD
 JV0189
 JV0189                          STATION DESCRIPTION
 JV0189
 JV0189'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0189'3.6 MI NE FROM BEL AIR.
 JV0189'ABOUT 3.6 MI NE ALONG STATE HIGHWAY 22 FROM THE COURTHOUSE AT
 JV0189'BEL AIR TO THE INTERSECTION OF THOMAS RUN ROAD.  DUE TO RECONSTRUCTION
 JV0189'OF THE INTERSECTION FOR COMMUNITY COLLEGE, THE STATION IS 56.3
 JV0189'FT N OF THE CENTERLINE OF MD 22, 55.0 FT W OF THE CENTERLINE OF
 JV0189'THOMAS RUN ROAD, 2.8 FT NW OF G AND E POLE 51130, AND 19.1 FT
 JV0189'N OF THE NW CORNER OF THE CONCRETE BASE OF LIGHT POLE.  STATION
 JV0189'IS 8 IN BELOW THE SURFACE.
 JV0189
 JV0189                          STATION RECOVERY (1989)
 JV0189
 JV0189'RECOVERY NOTE BY RINKER DETWILER AND ASSOCIATES 1989
 JV0189'THE STATION IS LOCATED IN EASTERN HARFORD COUNTY, MARYLAND ABOUT 3
 JV0189'MILES NORTHEAST OF BEL AIR.  TO REACH THE STATION FROM THE
 JV0189'INTERSECTION OF STATE HIGHWAY 24 AND STATE HIGHWAY 22 PROCEED
 JV0189'NORTHEAST ALONG HIGHWAY 22 4.25 MILES TO ITS INTERSECTION WITH THOMAS
 JV0189'RUN ROAD AND THE STATION ON THE LEFT SIDE OF THE ROAD ON THE
 JV0189'NORTHWEST CORNER OF THE INTERSECTION.  THE STATION IS A STANDARD
 JV0189'SURVEY DISC SET IN CONCRETE ABOUT 6 INCHES BELOW GROUND STAMPED 116
 JV0189'SKS RESET 1966.  THE STATION IS 66.0 FEET NORTHWEST OF THE CENTERLINE
 JV0189'OF THOMAS RUN ROAD, 3.5 FEET NORTH OF G AND E POWER POLE NUMBER
 JV0189'51130, 53.4 FEET NORTHEAST OF THE CENTERLINE OF HIGHWAY 22.
 JV0189
 JV0189                          STATION RECOVERY (1999)
 JV0189
 JV0189'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV0189'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1223 ***********************************************************************
 JV1223  DESIGNATION -  1160 C OF B
 JV1223  PID         -  JV1223
 JV1223  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1223  COUNTRY     -  US
 JV1223  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1223
 JV1223                         *CURRENT SURVEY CONTROL
 JV1223  ______________________________________________________________________
 JV1223* NAD 83(1986) POSITION- 39 17 48.     (N) 076 37 18.     (W)   SCALED
 JV1223* NAVD 88 ORTHO HEIGHT -    36.953 (meters)      121.24  (feet) ADJUSTED
 JV1223  ______________________________________________________________________
 JV1223  GEOID HEIGHT    -        -32.686 (meters)                     GEOID18
 JV1223  DYNAMIC HEIGHT  -         36.934 (meters)      121.17  (feet) COMP
 JV1223  MODELED GRAVITY -    980,104.6   (mgal)                       NAVD 88
 JV1223
 JV1223  VERT ORDER      -  SECOND    CLASS 0
 JV1223
 JV1223.The horizontal coordinates were scaled from a map and have
 JV1223.an estimated accuracy of +/- 6 seconds.
 JV1223
 JV1223.The orthometric height was determined by differential leveling and
 JV1223.adjusted by the NATIONAL GEODETIC SURVEY
 JV1223.in June 1991.
 JV1223
 JV1223.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1223.GEOID18 height accuracy estimate available here.
 JV1223
 JV1223.Click photographs - Photos may exist for this station.
 JV1223
 JV1223.The dynamic height is computed by dividing the NAVD 88
 JV1223.geopotential number by the normal gravity value computed on the
 JV1223.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1223.degrees latitude (g = 980.6199 gals.).
 JV1223
 JV1223.The modeled gravity was interpolated from observed gravity values.
 JV1223
 JV1223;                    North         East    Units  Estimated Accuracy
 JV1223;SPC MD       -   181,010.      432,640.      MT  (+/- 180 meters Scaled)
 JV1223
 JV1223_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ601509(NAD 83)
 JV1223
 JV1223                          SUPERSEDED SURVEY CONTROL
 JV1223
 JV1223  NGVD 29 (11/26/84)   37.189  (m)          122.01   (f) ADJUSTED    2 0
 JV1223
 JV1223.Superseded values are not recommended for survey control.
 JV1223
 JV1223.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1223.See file dsdata.pdf to determine how the superseded data were derived.
 JV1223
 JV1223_MARKER: Q = CHISELED SQUARE
 JV1223_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1223_SP_SET: RETAINING WALL
 JV1223_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1223
 JV1223  HISTORY     - Date     Condition        Report By
 JV1223  HISTORY     - UNK      MONUMENTED       MD0050
 JV1223  HISTORY     - 1935     GOOD             CGS
 JV1223  HISTORY     - 1966     GOOD             CGS
 JV1223  HISTORY     - 20070207 MARK NOT FOUND   GEOCAC
 JV1223
 JV1223                          STATION DESCRIPTION
 JV1223
 JV1223'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1223'AT BALTIMORE.
 JV1223'AT BALTIMORE, AT THE NORTHEAST CORNER OF THE INTERSECTION OF
 JV1223'MONUMENT AND EUTAW STREETS, AT A GRANITE RETAINING WALL SUPPORTING
 JV1223'AN IRON RAILING FOR AN AREAWAY OF A BUILDING, ON THE TOP OF
 JV1223'THE SOUTH END, 0.1 FOOT FROM THE SOUTH END, AND 0.1 FOOT FROM
 JV1223'THE WEST EDGE.  A CHISELED SQUARE.
 JV1223
 JV1223                          STATION RECOVERY (1966)
 JV1223
 JV1223'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV1223'RECOVERED IN GOOD CONDITION.
 JV1223
 JV1223                          STATION RECOVERY (2007)
 JV1223
 JV1223'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JV1223'THE DESCRIBED LOCATION IS NOW OCCUPIED BY A PAVED PARKING LOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2649 ***********************************************************************
 JV2649  DESIGNATION -  1162
 JV2649  PID         -  JV2649
 JV2649  STATE/COUNTY-  MD/MONTGOMERY
 JV2649  COUNTRY     -  US
 JV2649  USGS QUAD   -  SANDY SPRING (2016)
 JV2649
 JV2649                         *CURRENT SURVEY CONTROL
 JV2649  ______________________________________________________________________
 JV2649* NAD 83(1986) POSITION- 39 13 16.88   (N) 077 03 36.78   (W)   HD_HELD1
 JV2649* NAVD 88 ORTHO HEIGHT -   158.19  (+/-2cm)      519.0   (feet) VERTCON3
 JV2649  ______________________________________________________________________
 JV2649  GEOID HEIGHT    -        -31.832 (meters)                     GEOID18
 JV2649  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2649
 JV2649.The horizontal coordinates were determined by differentially corrected
 JV2649.hand held GPS observations or other comparable positioning techniques
 JV2649.and have an estimated accuracy of +/- 3 meters.
 JV2649
 JV2649.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2649.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2649
 JV2649.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2649.GEOID18 height accuracy estimate available here.
 JV2649
 JV2649.The vertical order pertains to the NGVD 29 superseded value.
 JV2649
 JV2649.Click photographs - Photos may exist for this station.
 JV2649
 JV2649;                    North         East    Units  Estimated Accuracy
 JV2649;SPC MD       -   172,581.3     394,800.1     MT  (+/- 3 meters HH1 GPS) 
 JV2649
 JV2649_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2215143363(NAD 83)
 JV2649
 JV2649                          SUPERSEDED SURVEY CONTROL
 JV2649
 JV2649  NGVD 29 (11/26/84)  158.395  (m)          519.67   (f) ADJUSTED    2 0
 JV2649
 JV2649.Superseded values are not recommended for survey control.
 JV2649
 JV2649.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2649.See file dsdata.pdf to determine how the superseded data were derived.
 JV2649
 JV2649_MARKER: B = BOLT
 JV2649_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV2649_SP_SET: STEP
 JV2649_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2649
 JV2649  HISTORY     - Date     Condition        Report By
 JV2649  HISTORY     - UNK      MONUMENTED       WSSC
 JV2649  HISTORY     - 1944     GOOD             WSSC
 JV2649  HISTORY     - 20100608 GOOD             NGS
 JV2649
 JV2649                          STATION DESCRIPTION
 JV2649
 JV2649'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2649'AT SUNSHINE.
 JV2649'AT MT. CARMEL METHODIST CHURCH, AT THE ENTRANCE, AND IN THE NORTH
 JV2649'END OF THE BOTTOM STEP.
 JV2649
 JV2649                          STATION RECOVERY (2010)
 JV2649
 JV2649'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV2649'THERE IS A LETTER B STAMPED IN THE TOP OF THE BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4329 ***********************************************************************
 DS4329  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4329  DESIGNATION -  117AZ
 DS4329  PID         -  DS4329
 DS4329  STATE/COUNTY-  MD/ANNE ARUNDEL
 DS4329  COUNTRY     -  US
 DS4329  USGS QUAD   -  GIBSON ISLAND (2017)
 DS4329
 DS4329                         *CURRENT SURVEY CONTROL
 DS4329  ______________________________________________________________________
 DS4329* NAD 83(2011) POSITION- 39 00 58.09510(N) 076 24 04.66914(W)   ADJUSTED
 DS4329* NAD 83(2011) ELLIP HT-   -28.587 (meters)        (01/30/26)   ADJUSTED
 DS4329* NAD 83(2011) EPOCH   -  2010.00
 DS4329* NAVD 88 ORTHO HEIGHT -     4.84  (meters)       15.9   (feet) GPS OBS
 DS4329  ______________________________________________________________________
 DS4329  GEOID HEIGHT    -        -33.421 (meters)                     GEOID18
 DS4329  NAD 83(2011) X  -  1,166,707.723 (meters)                     COMP
 DS4329  NAD 83(2011) Y  - -4,823,069.412 (meters)                     COMP
 DS4329  NAD 83(2011) Z  -  3,993,691.138 (meters)                     COMP
 DS4329  LAPLACE CORR    -         -2.20  (seconds)                    DEFLEC18
 DS4329
 DS4329  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4329  Standards:
 DS4329         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4329            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4329  -------------------------------------------------------------------
 DS4329  NETWORK    0.80   2.04           0.35   0.30   1.04     -0.11746743
 DS4329  -------------------------------------------------------------------
 DS4329  Click here for local accuracies and other accuracy information.
 DS4329
 DS4329.The horizontal coordinates were established by GPS observations
 DS4329.and adjusted by the MD DOT HIGHWAY ADMIN in January 2026.
 DS4329
 DS4329.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4329.frame has been affixed to the stable North American tectonic plate 
 DS4329
 DS4329.The horizontal coordinates are valid at the epoch date displayed above
 DS4329.which is a decimal equivalence of Year/Month/Day.
 DS4329
 DS4329.The orthometric height was determined by GPS observations and a
 DS4329.high-resolution geoid model using precise GPS observation and
 DS4329.processing techniques.
 DS4329
 DS4329.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4329.GEOID18 height accuracy estimate available here.
 DS4329
 DS4329.Click photographs - Photos may exist for this station.
 DS4329
 DS4329.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4329
 DS4329.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4329
 DS4329.The ellipsoidal height was determined by GPS observations
 DS4329.and is referenced to NAD 83.
 DS4329
 DS4329. The following values were computed from the NAD 83(2011) position.
 DS4329
 DS4329;                    North         East     Units Scale Factor Converg.
 DS4329;SPC MD       -   149,967.663   451,848.889   MT  0.99995284   +0 22 32.8
 DS4329;SPC MD       -   492,018.91  1,482,440.90   sFT  0.99995284   +0 22 32.8
 DS4329;UTM  18      - 4,319,501.425   378,684.268   MT  0.99978122   -0 52 56.2
 DS4329
 DS4329!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4329!SPC MD       -   1.00000449  x   0.99995284  =   0.99995732
 DS4329!UTM  18      -   1.00000449  x   0.99978122  =   0.99978570
 DS4329
 DS4329_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7868419501(NAD 83)
 DS4329
 DS4329                          SUPERSEDED SURVEY CONTROL
 DS4329
 DS4329.No superseded survey control is available for this station.
 DS4329
 DS4329_MARKER: DD = SURVEY DISK
 DS4329_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS4329_STAMPING: SPSP50
 DS4329_MARK LOGO: MDSHA
 DS4329_PROJECTION: PROJECTING 20 CENTIMETERS
 DS4329_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS4329_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4329+SATELLITE: SATELLITE OBSERVATIONS - March 13, 2025
 DS4329
 DS4329  HISTORY     - Date     Condition        Report By
 DS4329  HISTORY     - 19620101 MONUMENTED       MDSHA
 DS4329  HISTORY     - 20250313 GOOD             MDSHA
 DS4329
 DS4329                          STATION DESCRIPTION
 DS4329
 DS4329'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4329'THE MARK IS LOCATED ABOUT 5.2 MI (8.4 KM) WEST-NORTHWEST OF
 DS4329'STEVENSVILLE, 4.9 MI (7.9 KM) WEST-SOUTHWEST OF LOVE POINT AND 4.2 MI
 DS4329'(6.8 KM) SOUTH-SOUTHEAST OF GIBSON ISLAND.
 DS4329'
 DS4329'TO REACH THE MARK FROM THE INTERSECTION OF CAPE SAINT CLAIRE ROAD AND
 DS4329'EAST COLLEGE PARKWAY PROCEED SOUTH ON EAST COLLEGE PARKWAY FOR 0.24 KM
 DS4329'(0.15 MI) TO THE INTERSECTION WITH OLD CAPE SAINT CLAIRE ROAD.  TURN
 DS4329'RIGHT TO CONTINUE ON EAST COLLEGE PARKWAY AND PROCEED FOR 3.6 KM (2.2
 DS4329'MI) TO THE INTERSECTION WITH OCEANIC DRIVE.  CONTINUE SOUTH ON EAST
 DS4329'COLLEGE PARKWAY/SOUTH BEACH ROAD FOR 0.75 KM (0.47 MI) TO THE MARK ON
 DS4329'THE RIGHT.
 DS4329'
 DS4329'THE MARK IS 115.5 FT (35.2 M) SOUTHEAST OF A UTILITY POLE NUMBERED BGE
 DS4329'208965, 40 FT (12.2 M) WEST-SOUTHWEST OF THE CENTERLINE OF SOUTH BEACH
 DS4329'ROAD, 33.0 FT (10.1 M) OF, 1.8 FT (0.5 M) WEST-SOUTHWEST OF A THREE
 DS4329'FOOT TALL YELLOW METAL PIPE AND SET IN THE TOP OF A 6-IN (15 CM)
 DS4329'SQUARE CONCRETE POST.  MARK IS ALSO APPROXIMATELY 120 FT (36.6 M)
 DS4329'SOUTH OF THE EXTENDED CENTERLINE OF EAST BEACH ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0208 ***********************************************************************
 JV0208  DESIGNATION -  118 SKS
 JV0208  PID         -  JV0208
 JV0208  STATE/COUNTY-  MD/HARFORD
 JV0208  COUNTRY     -  US
 JV0208  USGS QUAD   -  BEL AIR (2016)
 JV0208
 JV0208                         *CURRENT SURVEY CONTROL
 JV0208  ______________________________________________________________________
 JV0208* NAD 83(1986) POSITION- 39 33 00.     (N) 076 20 14.     (W)   SCALED
 JV0208* NAVD 88 ORTHO HEIGHT -    95.905 (meters)      314.65  (feet) ADJUSTED
 JV0208  ______________________________________________________________________
 JV0208  GEOID HEIGHT    -        -32.763 (meters)                     GEOID18
 JV0208  DYNAMIC HEIGHT  -         95.857 (meters)      314.49  (feet) COMP
 JV0208  MODELED GRAVITY -    980,120.1   (mgal)                       NAVD 88
 JV0208
 JV0208  VERT ORDER      -  SECOND    CLASS 0
 JV0208
 JV0208.The horizontal coordinates were scaled from a map and have
 JV0208.an estimated accuracy of +/- 6 seconds.
 JV0208
 JV0208.The orthometric height was determined by differential leveling and
 JV0208.adjusted by the NATIONAL GEODETIC SURVEY
 JV0208.in June 1991.
 JV0208
 JV0208.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0208.GEOID18 height accuracy estimate available here.
 JV0208
 JV0208.Click photographs - Photos may exist for this station.
 JV0208
 JV0208.The dynamic height is computed by dividing the NAVD 88
 JV0208.geopotential number by the normal gravity value computed on the
 JV0208.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0208.degrees latitude (g = 980.6199 gals.).
 JV0208
 JV0208.The modeled gravity was interpolated from observed gravity values.
 JV0208
 JV0208;                    North         East    Units  Estimated Accuracy
 JV0208;SPC MD       -   209,270.      456,970.      MT  (+/- 180 meters Scaled)
 JV0208
 JV0208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ851786(NAD 83)
 JV0208
 JV0208                          SUPERSEDED SURVEY CONTROL
 JV0208
 JV0208  NGVD 29 (11/26/84)   96.151  (m)          315.46   (f) ADJUSTED    2 0
 JV0208
 JV0208.Superseded values are not recommended for survey control.
 JV0208
 JV0208.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0208.See file dsdata.pdf to determine how the superseded data were derived.
 JV0208
 JV0208_MARKER: DD = SURVEY DISK
 JV0208_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0208_STAMPING: 118 SKS 315 1953
 JV0208_MARK LOGO: USGS
 JV0208_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0208+STABILITY: SURFACE MOTION
 JV0208_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0208+SATELLITE: SATELLITE OBSERVATIONS - April 13, 2002
 JV0208
 JV0208  HISTORY     - Date     Condition        Report By
 JV0208  HISTORY     - 1953     MONUMENTED       USGS
 JV0208  HISTORY     - 1960     GOOD             CGS
 JV0208  HISTORY     - 20020413 GOOD             USPSQD
 JV0208
 JV0208                          STATION DESCRIPTION
 JV0208
 JV0208'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0208'1.6 MI NE FROM BEL AIR.
 JV0208'ABOUT 0.8 MILE NORTHEAST ALONG U.S. HIGHWAY 1 FROM THE POST
 JV0208'OFFICE AT BEL AIR, THENCE ABOUT 0.75 MILE EAST ALONG MOORES
 JV0208'MILL ROAD, 20 FEET NORTHEAST OF THE CENTER LINE OF EAST END OF
 JV0208'MOORES MILL ROAD AND JUNCTION OF HEIGHE ROAD LEADING EAST-SOUTHEAST,
 JV0208'18 FEET NORTHEAST OF CENTER LINE OF HEIGHE ROAD, 8 FEET SOUTH OF
 JV0208'THE SOUTH CORNER OF A TWO-CAR GARAGE, 35 FEET EAST OF THE CENTER
 JV0208'LINE OF A BLACK TOP ROAD (DRIVE) LEADING NORTH TO A LARGE TWO-STORY
 JV0208'STONE HOUSE, 2 1/2 FEET SOUTH-SOUTHEAST OF STONE CURBING AND
 JV0208'ABOUT 1 FOOT BELOW CURBING, 1 FOOT BELOW THE LEVEL OF THE ROAD,
 JV0208'AND SET IN TOP OF A CONCRETE POST PROJECTING 5 INCHES ABOVE
 JV0208'THE GROUND.
 JV0208
 JV0208                          STATION RECOVERY (2002)
 JV0208
 JV0208'RECOVERY NOTE BY US POWER SQUADRON 2002 (KC)
 JV0208'TAKE OUT, 20 FEET NORTHEAST OF THE CENTER LINE.....OF HEIGHE ROAD.
 JV0208'REPLACE WITH, TURN LEFT ON SOUTHAMPTON ROAD. STONE HOUSE IS .15 MILE
 JV0208'ON THE LEFT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0571 ***********************************************************************
 JV0571  DESIGNATION -  1181 C OF B
 JV0571  PID         -  JV0571
 JV0571  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0571  COUNTRY     -  US
 JV0571  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0571
 JV0571                         *CURRENT SURVEY CONTROL
 JV0571  ______________________________________________________________________
 JV0571* NAD 83(1986) POSITION- 39 16 07.2    (N) 076 35 33.5    (W)   HD_HELD2
 JV0571* NAVD 88 ORTHO HEIGHT -     9.104 (meters)       29.87  (feet) ADJUSTED
 JV0571  ______________________________________________________________________
 JV0571  GEOID HEIGHT    -        -32.814 (meters)                     GEOID18
 JV0571  DYNAMIC HEIGHT  -          9.099 (meters)       29.85  (feet) COMP
 JV0571  MODELED GRAVITY -    980,100.8   (mgal)                       NAVD 88
 JV0571
 JV0571  VERT ORDER      -  FIRST     CLASS I
 JV0571
 JV0571.The horizontal coordinates were established by autonomous hand held GPS
 JV0571.observations and have an estimated accuracy of +/- 10 meters.
 JV0571
 JV0571.The orthometric height was determined by differential leveling and
 JV0571.adjusted by the NATIONAL GEODETIC SURVEY
 JV0571.in June 1991.
 JV0571
 JV0571.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0571.GEOID18 height accuracy estimate available here.
 JV0571
 JV0571.Click photographs - Photos may exist for this station.
 JV0571
 JV0571.The dynamic height is computed by dividing the NAVD 88
 JV0571.geopotential number by the normal gravity value computed on the
 JV0571.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0571.degrees latitude (g = 980.6199 gals.).
 JV0571
 JV0571.The modeled gravity was interpolated from observed gravity values.
 JV0571
 JV0571;                    North         East    Units  Estimated Accuracy
 JV0571;SPC MD       -   177,910.      435,153.      MT  (+/- 10 meters HH2 GPS)
 JV0571
 JV0571_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6261047800(NAD 83)
 JV0571
 JV0571                          SUPERSEDED SURVEY CONTROL
 JV0571
 JV0571  NGVD 29 (11/26/84)    9.344  (m)           30.66   (f) ADJUSTED    1 1
 JV0571
 JV0571.Superseded values are not recommended for survey control.
 JV0571
 JV0571.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0571.See file dsdata.pdf to determine how the superseded data were derived.
 JV0571
 JV0571_MARKER: Q = CHISELED SQUARE
 JV0571_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0571_SP_SET: STEP
 JV0571_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0571_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0571+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV0571
 JV0571  HISTORY     - Date     Condition        Report By
 JV0571  HISTORY     - UNK      MONUMENTED       MD0050
 JV0571  HISTORY     - 1971     GOOD             NGS
 JV0571  HISTORY     - 1976     GOOD             NGS
 JV0571  HISTORY     - 20040714 GOOD             GEOCAC
 JV0571  HISTORY     - 20110315 GOOD             GEOCAC
 JV0571
 JV0571                          STATION DESCRIPTION
 JV0571
 JV0571'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0571'AT BALTIMORE.
 JV0571'AT BALTIMORE, NEAR THE INTERSECTION OF FORT AVENUE AND TOWSON
 JV0571'STREET, AT THE FORT AVENUE ENTRANCE TO THE CATHOLIC CHURCH OF
 JV0571'OUR LADY OF GOOD COUNSEL, AND IS A 1/2-INCH CHISELED SQUARE
 JV0571'IN THE TOP OF THE NORTHWEST END OF THE TOP STEP AT THE ENTRANCE.
 JV0571
 JV0571                          STATION RECOVERY (1976)
 JV0571
 JV0571'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
 JV0571'RECOVERED IN GOOD CONDITION.
 JV0571
 JV0571                          STATION RECOVERY (2004)
 JV0571
 JV0571'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV0571'RECOVERED IN GOOD CONDITION.
 JV0571
 JV0571                          STATION RECOVERY (2011)
 JV0571
 JV0571'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV0571'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2657 ***********************************************************************
 JV2657  DESIGNATION -  1194
 JV2657  PID         -  JV2657
 JV2657  STATE/COUNTY-  MD/HOWARD
 JV2657  COUNTRY     -  US
 JV2657  USGS QUAD   -  WOODBINE (2016)
 JV2657
 JV2657                         *CURRENT SURVEY CONTROL
 JV2657  ______________________________________________________________________
 JV2657* NAD 83(1986) POSITION- 39 15 28.2    (N) 077 03 11.8    (W)   HD_HELD2
 JV2657* NAVD 88 ORTHO HEIGHT -   117.97  (+/-2cm)      387.0   (feet) VERTCON3
 JV2657  ______________________________________________________________________
 JV2657  GEOID HEIGHT    -        -31.845 (meters)                     GEOID18
 JV2657  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2657
 JV2657.The horizontal coordinates were established by autonomous hand held GPS
 JV2657.observations and have an estimated accuracy of +/- 10 meters.
 JV2657
 JV2657.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2657.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2657
 JV2657.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2657.GEOID18 height accuracy estimate available here.
 JV2657
 JV2657.The vertical order pertains to the NGVD 29 superseded value.
 JV2657
 JV2657.Click photographs - Photos may exist for this station.
 JV2657
 JV2657;                    North         East    Units  Estimated Accuracy
 JV2657;SPC MD       -   176,631.      395,402.      MT  (+/- 10 meters HH2 GPS)
 JV2657
 JV2657_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2284247398(NAD 83)
 JV2657
 JV2657                          SUPERSEDED SURVEY CONTROL
 JV2657
 JV2657  NGVD 29 (11/26/84)  118.167  (m)          387.69   (f) ADJUSTED    2 0
 JV2657
 JV2657.Superseded values are not recommended for survey control.
 JV2657
 JV2657.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2657.See file dsdata.pdf to determine how the superseded data were derived.
 JV2657
 JV2657_MARKER: B = BOLT
 JV2657_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2657_SP_SET: BRIDGE
 JV2657_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2657
 JV2657  HISTORY     - Date     Condition        Report By
 JV2657  HISTORY     - UNK      MONUMENTED       WSSC
 JV2657  HISTORY     - 1944     GOOD             WSSC
 JV2657  HISTORY     - 20220131 GOOD             PROFLN
 JV2657
 JV2657                          STATION DESCRIPTION
 JV2657
 JV2657'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2657'AT ROXBURY MILLS.
 JV2657'ON THE SUNSHINE-COOKSVILLE ROAD (STATE HIGHWAY 97), AT THE BRIDGE
 JV2657'OVER CATTAIL CREEK, AND IN THE TOP OF THE NORTHWEST WING WALL.
 JV2657
 JV2657                          STATION RECOVERY (2022)
 JV2657
 JV2657'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2022 (JRO)
 JV2657'THE MARK CAN BE REACHED TO THE WEST OFF RT 97 BY EITHER BRANCH OF
 JV2657'ROXBURY MILL ROAD, WHICH IS BROKEN BY THE ABANDONED BRIDGE IN WHICH
 JV2657'THIS MARK IS SET.  THE WSSC SURVEY DEPARTMENT CAN PROVIDE A SKETCH OF
 JV2657'THIS MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1449 ***********************************************************************
 HV1449  DESIGNATION -  1195 WSSC
 HV1449  PID         -  HV1449
 HV1449  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1449  COUNTRY     -  US
 HV1449  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1449
 HV1449                         *CURRENT SURVEY CONTROL
 HV1449  ______________________________________________________________________
 HV1449* NAD 83(1986) POSITION- 38 58 43.     (N) 076 55 44.     (W)   SCALED
 HV1449* NAVD 88 ORTHO HEIGHT -    19.192 (meters)       62.97  (feet) ADJUSTED
 HV1449  ______________________________________________________________________
 HV1449  GEOID HEIGHT    -        -32.158 (meters)                     GEOID18
 HV1449  DYNAMIC HEIGHT  -         19.181 (meters)       62.93  (feet) COMP
 HV1449  MODELED GRAVITY -    980,105.4   (mgal)                       NAVD 88
 HV1449
 HV1449  VERT ORDER      -  SECOND    CLASS I
 HV1449
 HV1449.The horizontal coordinates were scaled from a map and have
 HV1449.an estimated accuracy of +/- 6 seconds.
 HV1449
 HV1449.The orthometric height was determined by differential leveling and
 HV1449.adjusted by the NATIONAL GEODETIC SURVEY
 HV1449.in June 1991.
 HV1449
 HV1449.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1449.GEOID18 height accuracy estimate available here.
 HV1449
 HV1449.Click photographs - Photos may exist for this station.
 HV1449
 HV1449.The dynamic height is computed by dividing the NAVD 88
 HV1449.geopotential number by the normal gravity value computed on the
 HV1449.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1449.degrees latitude (g = 980.6199 gals.).
 HV1449
 HV1449.The modeled gravity was interpolated from observed gravity values.
 HV1449
 HV1449;                    North         East    Units  Estimated Accuracy
 HV1449;SPC MD       -   145,630.      406,160.      MT  (+/- 180 meters Scaled)
 HV1449
 HV1449_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ329161(NAD 83)
 HV1449
 HV1449                          SUPERSEDED SURVEY CONTROL
 HV1449
 HV1449  NGVD 29 (11/26/84)   19.413  (m)           63.69   (f) ADJUSTED    2 1
 HV1449
 HV1449.Superseded values are not recommended for survey control.
 HV1449
 HV1449.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1449.See file dsdata.pdf to determine how the superseded data were derived.
 HV1449
 HV1449_MARKER: Z = SEE DESCRIPTION
 HV1449_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1449_SP_SET: CULVERT
 HV1449_STAMPING: WSSC BM 1195
 HV1449_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1449
 HV1449  HISTORY     - Date     Condition        Report By
 HV1449  HISTORY     - UNK      MONUMENTED       WSSC
 HV1449  HISTORY     - 1951     GOOD             CGS
 HV1449
 HV1449                          STATION DESCRIPTION
 HV1449
 HV1449'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1449'AT COLLEGE PARK.
 HV1449'AT COLLEGE PARK, PRINCE GEORGES COUNTY, ON CALVERT ROAD, AT THE
 HV1449'CROSSING OF THE CAPITAL TRANSIT COMPANY TRACKS, 87 YARDS SOUTH
 HV1449'OF THE CENTER LINE OF CALVERT ROAD, 5.6 FEET EAST OF THE EAST
 HV1449'RAIL OF THE NORTH-BOUND TRACK AND IN THE CENTER OF THE TOP OF THE
 HV1449'EAST HEADWALL OF A CULVERT.  A WASHINGTON SUBURBAN SANITARY
 HV1449'DISTRICT LAG SCREW AND WASHER, STAMPED WSSC B.M. 1195.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2276 ***********************************************************************
 HU2276  DESIGNATION -  12 KEM
 HU2276  PID         -  HU2276
 HU2276  STATE/COUNTY-  MD/WICOMICO
 HU2276  COUNTRY     -  US
 HU2276  USGS QUAD   -  WETIPQUIN (2016)
 HU2276
 HU2276                         *CURRENT SURVEY CONTROL
 HU2276  ______________________________________________________________________
 HU2276* NAD 83(1986) POSITION- 38 18 39.4    (N) 075 51 52.4    (W)   HD_HELD2
 HU2276* NAVD 88 ORTHO HEIGHT -     2.315 (meters)        7.60  (feet) ADJUSTED
 HU2276  ______________________________________________________________________
 HU2276  GEOID HEIGHT    -        -35.712 (meters)                     GEOID18
 HU2276  DYNAMIC HEIGHT  -          2.313 (meters)        7.59  (feet) COMP
 HU2276  MODELED GRAVITY -    979,995.4   (mgal)                       NAVD 88
 HU2276
 HU2276  VERT ORDER      -  SECOND    CLASS I
 HU2276
 HU2276.The horizontal coordinates were established by autonomous hand held GPS
 HU2276.observations and have an estimated accuracy of +/- 10 meters.
 HU2276
 HU2276.The orthometric height was determined by differential leveling and
 HU2276.adjusted by the NATIONAL GEODETIC SURVEY
 HU2276.in June 1991.
 HU2276
 HU2276.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2276.GEOID18 height accuracy estimate available here.
 HU2276
 HU2276.Click photographs - Photos may exist for this station.
 HU2276
 HU2276.The dynamic height is computed by dividing the NAVD 88
 HU2276.geopotential number by the normal gravity value computed on the
 HU2276.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2276.degrees latitude (g = 980.6199 gals.).
 HU2276
 HU2276.The modeled gravity was interpolated from observed gravity values.
 HU2276
 HU2276;                    North         East    Units  Estimated Accuracy
 HU2276;SPC MD       -    72,135.      499,304.      MT  (+/- 10 meters HH2 GPS)
 HU2276
 HU2276_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2441540669(NAD 83)
 HU2276
 HU2276                          SUPERSEDED SURVEY CONTROL
 HU2276
 HU2276  NGVD 29 (06/12/91)    2.569  (m)            8.43   (f) ADJUSTED    2 1
 HU2276
 HU2276.Superseded values are not recommended for survey control.
 HU2276
 HU2276.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2276.See file dsdata.pdf to determine how the superseded data were derived.
 HU2276
 HU2276_MARKER: DB = BENCH MARK DISK
 HU2276_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2276_STAMPING: 12 KEM 1977
 HU2276_MARK LOGO: USGS
 HU2276_PROJECTION: RECESSED 25 CENTIMETERS
 HU2276_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2276_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2276+STABILITY: SURFACE MOTION
 HU2276_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2276+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2019
 HU2276
 HU2276  HISTORY     - Date     Condition        Report By
 HU2276  HISTORY     - 1977     MONUMENTED       USGS
 HU2276  HISTORY     - 19900301 GOOD             NGS
 HU2276  HISTORY     - 20190514 GOOD             PROFLN
 HU2276
 HU2276                          STATION DESCRIPTION
 HU2276
 HU2276'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2276'2.3 KM (1.43 MI) NORTHEASTERLY ALONG STATE HIGHWAY 349 FROM ITS
 HU2276'JUNCTION WITH TEXAS ROAD IN BIVALVE, 23.5 M (77.10 FT) NORTH OF AND
 HU2276'LEVEL WITH THE HIGHWAY CENTERLINE, 0.5 M (1.64 FT) SOUTHWEST OF THE
 HU2276'SOUTHWEST CORNER OF THE ST. MARYS EPISCOPAL CHURCH, AND IN A
 HU2276'CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2276
 HU2276                          STATION RECOVERY (2019)
 HU2276
 HU2276'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2276'THE MARK IS UNDER A 10 INCH DIAMETER IRRIGATION VALVE BOX TO ASSIST
 HU2276'FINDING AND USING IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1184 ***********************************************************************
 JV1184  DESIGNATION -  12 PRR
 JV1184  PID         -  JV1184
 JV1184  STATE/COUNTY-  MD/BALTIMORE
 JV1184  COUNTRY     -  US
 JV1184  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1184
 JV1184                         *CURRENT SURVEY CONTROL
 JV1184  ______________________________________________________________________
 JV1184* NAD 83(1986) POSITION- 39 25 01.     (N) 076 38 22.     (W)   SCALED
 JV1184* NAVD 88 ORTHO HEIGHT -    88.534 (meters)      290.47  (feet) ADJUSTED
 JV1184  ______________________________________________________________________
 JV1184  GEOID HEIGHT    -        -32.475 (meters)                     GEOID18
 JV1184  DYNAMIC HEIGHT  -         88.487 (meters)      290.31  (feet) COMP
 JV1184  MODELED GRAVITY -    980,099.1   (mgal)                       NAVD 88
 JV1184
 JV1184  VERT ORDER      -  SECOND    CLASS 0
 JV1184
 JV1184.The horizontal coordinates were scaled from a map and have
 JV1184.an estimated accuracy of +/- 6 seconds.
 JV1184
 JV1184.The orthometric height was determined by differential leveling and
 JV1184.adjusted by the NATIONAL GEODETIC SURVEY
 JV1184.in June 1991.
 JV1184
 JV1184.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1184.GEOID18 height accuracy estimate available here.
 JV1184
 JV1184.Click photographs - Photos may exist for this station.
 JV1184
 JV1184.The dynamic height is computed by dividing the NAVD 88
 JV1184.geopotential number by the normal gravity value computed on the
 JV1184.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1184.degrees latitude (g = 980.6199 gals.).
 JV1184
 JV1184.The modeled gravity was interpolated from observed gravity values.
 JV1184
 JV1184;                    North         East    Units  Estimated Accuracy
 JV1184;SPC MD       -   194,360.      431,050.      MT  (+/- 180 meters Scaled)
 JV1184
 JV1184_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ588643(NAD 83)
 JV1184
 JV1184                          SUPERSEDED SURVEY CONTROL
 JV1184
 JV1184  NGVD 29 (11/26/84)   88.757  (m)          291.20   (f) ADJUSTED    2 0
 JV1184
 JV1184.Superseded values are not recommended for survey control.
 JV1184
 JV1184.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1184.See file dsdata.pdf to determine how the superseded data were derived.
 JV1184
 JV1184_MARKER: B = BOLT
 JV1184_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1184_SP_SET: BRIDGE
 JV1184_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1184
 JV1184  HISTORY     - Date     Condition        Report By
 JV1184  HISTORY     - UNK      MONUMENTED       PRR
 JV1184  HISTORY     - 1942     GOOD             CGS
 JV1184
 JV1184                          STATION DESCRIPTION
 JV1184
 JV1184'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1184'0.8 MI N FROM RIDERWOOD.
 JV1184'0.8 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV1184'AT RIDERWOOD, BALTIMORE COUNTY, AT BRIDGE 9.73 OVER ROLAND RUN,
 JV1184'AND IN THE TOP OF THE NORTHWEST WING WALL.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2780 ***********************************************************************
 HU2780  DESIGNATION -  12 WDK
 HU2780  PID         -  HU2780
 HU2780  STATE/COUNTY-  MD/WORCESTER
 HU2780  COUNTRY     -  US
 HU2780  USGS QUAD   -  BERLIN (2016)
 HU2780
 HU2780                         *CURRENT SURVEY CONTROL
 HU2780  ______________________________________________________________________
 HU2780* NAD 83(2011) POSITION- 38 20 19.95396(N) 075 07 46.48898(W)   ADJUSTED
 HU2780* NAD 83(2011) ELLIP HT-   -32.564 (meters)        (03/04/17)   ADJUSTED
 HU2780* NAD 83(2011) EPOCH   -  2010.00
 HU2780* NAVD 88 ORTHO HEIGHT -     3.461 (meters)       11.36  (feet) ADJUSTED
 HU2780  ______________________________________________________________________
 HU2780  GEOID HEIGHT    -        -36.037 (meters)                     GEOID18
 HU2780  NAD 83(2011) X  -  1,285,519.494 (meters)                     COMP
 HU2780  NAD 83(2011) Y  - -4,841,394.856 (meters)                     COMP
 HU2780  NAD 83(2011) Z  -  3,934,996.246 (meters)                     COMP
 HU2780  LAPLACE CORR    -         -0.67  (seconds)                    DEFLEC18
 HU2780  DYNAMIC HEIGHT  -          3.458 (meters)       11.35  (feet) COMP
 HU2780  MODELED GRAVITY -    980,008.4   (mgal)                       NAVD 88
 HU2780
 HU2780  VERT ORDER      -  SECOND    CLASS I
 HU2780
 HU2780  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2780  Standards:
 HU2780         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2780            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2780  -------------------------------------------------------------------
 HU2780  NETWORK    0.69   1.35           0.30   0.26   0.69     -0.04062845
 HU2780  -------------------------------------------------------------------
 HU2780  Click here for local accuracies and other accuracy information.
 HU2780
 HU2780.The horizontal coordinates were established by GPS observations
 HU2780.and adjusted by the ARCHER-SHEE LAND SURVEYING in March 2017.
 HU2780
 HU2780.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2780.been affixed to the stable North American tectonic plate. See 
 HU2780.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2780
 HU2780.The horizontal coordinates are valid at the epoch date displayed above
 HU2780.which is a decimal equivalence of Year/Month/Day.
 HU2780
 HU2780.The orthometric height was determined by differential leveling and
 HU2780.adjusted by the NATIONAL GEODETIC SURVEY
 HU2780.in November 1994.
 HU2780
 HU2780.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2780.GEOID18 height accuracy estimate available here.
 HU2780
 HU2780.Click photographs - Photos may exist for this station.
 HU2780
 HU2780.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2780
 HU2780.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2780
 HU2780.The ellipsoidal height was determined by GPS observations
 HU2780.and is referenced to NAD 83.
 HU2780
 HU2780.The dynamic height is computed by dividing the NAVD 88
 HU2780.geopotential number by the normal gravity value computed on the
 HU2780.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2780.degrees latitude (g = 980.6199 gals.).
 HU2780
 HU2780.The modeled gravity was interpolated from observed gravity values.
 HU2780
 HU2780. The following values were computed from the NAD 83(2011) position.
 HU2780
 HU2780;                    North         East     Units Scale Factor Converg.
 HU2780;SPC MD       -    76,293.354   563,512.202   MT  0.99999346   +1 10 26.2
 HU2780;SPC MD       -   250,305.78  1,848,789.62   sFT  0.99999346   +1 10 26.2
 HU2780;UTM  18      - 4,243,423.058   488,675.748   MT  0.99960158   -0 04 49.4
 HU2780
 HU2780!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2780!SPC MD       -   1.00000511  x   0.99999346  =   0.99999857
 HU2780!UTM  18      -   1.00000511  x   0.99960158  =   0.99960669
 HU2780
 HU2780_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8867543423(NAD 83)
 HU2780
 HU2780                          SUPERSEDED SURVEY CONTROL
 HU2780
 HU2780  NGVD 29 (02/25/92)    3.706  (m)           12.16   (f) ADJUSTED    2 1
 HU2780
 HU2780.Superseded values are not recommended for survey control.
 HU2780
 HU2780.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2780.See file dsdata.pdf to determine how the superseded data were derived.
 HU2780
 HU2780_MARKER: DD = SURVEY DISK
 HU2780_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU2780_SP_SET: BRIDGE
 HU2780_STAMPING: 12 WDK 1963
 HU2780_MARK LOGO: USGS
 HU2780_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2780_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2780_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2780+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2016
 HU2780
 HU2780  HISTORY     - Date     Condition        Report By
 HU2780  HISTORY     - 1963     MONUMENTED       USGS
 HU2780  HISTORY     - 19910514 GOOD             MDSHA
 HU2780  HISTORY     - 20020305 GOOD             USPSQD
 HU2780  HISTORY     - 20031228 GOOD             USPSQD
 HU2780  HISTORY     - 20040409 GOOD             MDSHA
 HU2780  HISTORY     - 20051220 GOOD             USPSQD
 HU2780  HISTORY     - 20070916 GOOD             GEOCAC
 HU2780  HISTORY     - 20101003 GOOD             NGS
 HU2780  HISTORY     - 20160220 GOOD             ARCSHE
 HU2780
 HU2780                          STATION DESCRIPTION
 HU2780
 HU2780'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2780'THE MARK IS LOCATED ABOUT 4.97 MI (8.00 KM) EAST OF BERLIN, 2.34 MI
 HU2780'(3.77 KM) WEST OF OCEAN CITY AND ON ROAD RIGHT-OF-WAY.  TO REACH FROM
 HU2780'THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN, GO EAST ON
 HU2780'U.S. HIGHWAY 50 FOR 4.78 MI (7.69 KM) TO THE HERRING CREEK BRIDGE
 HU2780'AND THE MARK ON THE RIGHT.  IT IS 44.6 FT (13.6 M) EAST OF THE CENTER
 HU2780'LINE OF THE CHANNEL, 22.8 FT (6.9 M) NORTH OF TELEPHONE POLE NUMBER
 HU2780'238, 21.4 FT (6.5 M) NORTH OF A BULKHEAD, 21.2 FT (6.5 M) SOUTH OF
 HU2780'THE CENTER LINE OF THE EASTBOUND LANES OF THE HIGHWAY AND SET IN A
 HU2780'DRILL HOLE IN THE SOUTHEAST CORNER OF THE BRIDGE.
 HU2780
 HU2780                          STATION RECOVERY (2002)
 HU2780
 HU2780'RECOVERY NOTE BY US POWER SQUADRON 2002 (PMF)
 HU2780'RECOVERED IN GOOD CONDITION.
 HU2780
 HU2780                          STATION RECOVERY (2003)
 HU2780
 HU2780'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU2780'RECOVERED IN GOOD CONDITION.
 HU2780
 HU2780                          STATION RECOVERY (2004)
 HU2780
 HU2780'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (MRA)
 HU2780'RECOVERED AS DESCRIBED.
 HU2780
 HU2780                          STATION RECOVERY (2005)
 HU2780
 HU2780'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU2780'RECOVERED IN GOOD CONDITION.
 HU2780
 HU2780                          STATION RECOVERY (2007)
 HU2780
 HU2780'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 HU2780'RECOVERED IN GOOD CONDITION.
 HU2780
 HU2780                          STATION RECOVERY (2010)
 HU2780
 HU2780'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HU2780'RECOVERED IN GOOD CONDITION.
 HU2780
 HU2780                          STATION RECOVERY (2016)
 HU2780
 HU2780'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MRA)
 HU2780'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1391 ***********************************************************************
 JV1391  DESIGNATION -  120
 JV1391  PID         -  JV1391
 JV1391  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1391  COUNTRY     -  US
 JV1391  USGS QUAD   -  LAUREL (2016)
 JV1391
 JV1391                         *CURRENT SURVEY CONTROL
 JV1391  ______________________________________________________________________
 JV1391* NAD 83(1986) POSITION- 39 00 27.     (N) 076 46 46.     (W)   SCALED
 JV1391* NAVD 88 ORTHO HEIGHT -    45.157 (meters)      148.15  (feet) ADJUSTED
 JV1391  ______________________________________________________________________
 JV1391  GEOID HEIGHT    -        -32.532 (meters)                     GEOID18
 JV1391  DYNAMIC HEIGHT  -         45.132 (meters)      148.07  (feet) COMP
 JV1391  MODELED GRAVITY -    980,085.8   (mgal)                       NAVD 88
 JV1391
 JV1391  VERT ORDER      -  FIRST     CLASS II
 JV1391
 JV1391.The horizontal coordinates were scaled from a map and have
 JV1391.an estimated accuracy of +/- 6 seconds.
 JV1391
 JV1391.The orthometric height was determined by differential leveling and
 JV1391.adjusted by the NATIONAL GEODETIC SURVEY
 JV1391.in June 1991.
 JV1391
 JV1391.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1391.GEOID18 height accuracy estimate available here.
 JV1391
 JV1391.Click photographs - Photos may exist for this station.
 JV1391
 JV1391.The dynamic height is computed by dividing the NAVD 88
 JV1391.geopotential number by the normal gravity value computed on the
 JV1391.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1391.degrees latitude (g = 980.6199 gals.).
 JV1391
 JV1391.The modeled gravity was interpolated from observed gravity values.
 JV1391
 JV1391;                    North         East    Units  Estimated Accuracy
 JV1391;SPC MD       -   148,860.      419,100.      MT  (+/- 180 meters Scaled)
 JV1391
 JV1391_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ459191(NAD 83)
 JV1391
 JV1391                          SUPERSEDED SURVEY CONTROL
 JV1391
 JV1391  NGVD 29 (11/26/84)   45.380  (m)          148.88   (f) ADJUSTED    1 2
 JV1391
 JV1391.Superseded values are not recommended for survey control.
 JV1391
 JV1391.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1391.See file dsdata.pdf to determine how the superseded data were derived.
 JV1391
 JV1391_MARKER: B = BOLT
 JV1391_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1391_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1391
 JV1391  HISTORY     - Date     Condition        Report By
 JV1391  HISTORY     - UNK      MONUMENTED       CGS
 JV1391  HISTORY     - 1941     GOOD             CGS
 JV1391  HISTORY     - 1942     GOOD             CGS
 JV1391
 JV1391                          STATION DESCRIPTION
 JV1391
 JV1391'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1391'AT BOWIE.
 JV1391'AT BOWIE, PRINCE GEORGES COUNTY, ON THE PENNSYLVANIA RAILROAD,
 JV1391'63 FEET NORTHEAST OF THE NORTHEAST LEG OF SEMAPHORE 120.54,
 JV1391'AT A Y BETWEEN THE MAIN TRACK AND A SPUR TRACK LEADING SOUTHEAST,
 JV1391'ABOUT 114 FEET NORTHEAST OF THE NORTH CORNER OF THE SWITCH
 JV1391'TOWER, AND 12 FEET SOUTHEAST OF THE SOUTHEAST RAIL OF THE MAIN
 JV1391'TRACK.  AN IRON BOLT, SET IN THE TOP OF A STONE POST MARKED
 JV1391'B M 120 AND PROJECTING ABOUT 2 1/2 FEET ABOVE GROUND.
 JV1391
 JV1391                          STATION RECOVERY (1942)
 JV1391
 JV1391'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV1391'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6553 ***********************************************************************
 HV6553  DESIGNATION -  12000 YARD F RNG TRIAL
 HV6553  PID         -  HV6553
 HV6553  STATE/COUNTY-  MD/ST MARYS
 HV6553  COUNTRY     -  US
 HV6553  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6553
 HV6553                         *CURRENT SURVEY CONTROL
 HV6553  ______________________________________________________________________
 HV6553* NAD 83(1993) POSITION- 38 06 10.53465(N) 076 23 30.85941(W)   ADJUSTED
 HV6553* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6553  ______________________________________________________________________
 HV6553  GEOID HEIGHT    -        -35.014 (meters)                     GEOID18
 HV6553  LAPLACE CORR    -         -6.01  (seconds)                    DEFLEC18
 HV6553  HORZ ORDER      -  THIRD
 HV6553
 HV6553.The horizontal coordinates were established by classical geodetic methods
 HV6553.and adjusted by the National Geodetic Survey in November 1994.
 HV6553
 HV6553.The orthometric height was scaled from a topographic map.
 HV6553
 HV6553.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6553.GEOID18 height accuracy estimate available here.
 HV6553
 HV6553.Click photographs - Photos may exist for this station.
 HV6553
 HV6553.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6553
 HV6553. The following values were computed from the NAD 83(1993) position.
 HV6553
 HV6553;                    North         East     Units Scale Factor Converg.
 HV6553;SPC MD       -    48,604.845   453,337.456   MT  1.00004013   +0 22 54.0
 HV6553;SPC MD       -   159,464.40  1,487,324.64   sFT  1.00004013   +0 22 54.0
 HV6553;SPC VA S     - 1,198,454.683 3,684,889.806   MT  1.00002771   +1 16 46.0
 HV6553;SPC VA S     - 3,931,930.07 12,089,509.31   sFT  1.00002771   +1 16 46.0
 HV6553;UTM  18      - 4,218,149.829   377,962.532   MT  0.99978342   -0 51 32.5
 HV6553
 HV6553!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6553!SPC MD       -   1.00000538  x   1.00004013  =   1.00004551
 HV6553!SPC VA S     -   1.00000538  x   1.00002771  =   1.00003309
 HV6553!UTM  18      -   1.00000538  x   0.99978342  =   0.99978880
 HV6553
 HV6553:                Primary Azimuth Mark                     Grid Az
 HV6553:SPC MD       -  ST GEORGE 5                              268 51 00.8
 HV6553:SPC VA S     -  ST GEORGE 5                              267 57 08.8
 HV6553:UTM  18      -  ST GEORGE 5                              270 05 27.3
 HV6553
 HV6553_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7796218149(NAD 83)
 HV6553
 HV6553|---------------------------------------------------------------------|
 HV6553| PID    Reference Object                     Distance      Geod. Az  |
 HV6553|                                                           dddmmss.s |
 HV6553| HV6549 ST GEORGE 5                         APPROX. 7.2 KM 2691354.8 |
 HV6553| HV6552 12000 YARD FRONT RANGE               59.878 METERS 29045     |
 HV6553|---------------------------------------------------------------------|
 HV6553
 HV6553                          SUPERSEDED SURVEY CONTROL
 HV6553
 HV6553  NAD 83(1991)-  38 06 10.53367(N)    076 23 30.86183(W) AD(       ) 3
 HV6553  NAD 83(1986)-  38 06 10.53510(N)    076 23 30.87607(W) AD(       ) 3
 HV6553  NAD 27      -  38 06 10.07800(N)    076 23 32.06600(W) AD(       ) 3
 HV6553  USSD        -  38 06 10.48200(N)    076 23 31.78600(W) AD(       ) 3
 HV6553
 HV6553.Superseded values are not recommended for survey control.
 HV6553
 HV6553.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6553.See file dsdata.pdf to determine how the superseded data were derived.
 HV6553
 HV6553_MARKER: DS = TRIANGULATION STATION DISK
 HV6553_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6553_STAMPING: 12 T
 HV6553_MARK LOGO: CGS
 HV6553_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6553
 HV6553  HISTORY     - Date     Condition        Report By
 HV6553  HISTORY     - 1919     MONUMENTED       CGS
 HV6553
 HV6553                          STATION DESCRIPTION
 HV6553
 HV6553'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6553'STATION IS ON NE SIDE OF POTOMAC RIVER, ON E SIDE OF ENTRANCE
 HV6553'TO CALVERT CREEK, ON LAND BELONGING TO WILLIAM CURLEY, ON
 HV6553'SLOPING GROUND COVERED WITH HEAVY SOD.  IT IS 3 FEET ABOVE
 HV6553'HIGH WATER, 10 METERS FROM A 2-FOOT BANK AT EDGE OF CREEK,
 HV6553'WHERE THERE WAS FORMERLY A FOOTBRIDGE, 21 METERS N OF A 1-FOOT
 HV6553'CEDAR STUMP IN THE SAND AT HIGH-WATER LINE AT ENTRANCE TO
 HV6553'CREEK, 9.24 METERS (30.3 FEET) W OF THE SW CORNER OF A
 HV6553'PAVILION, AND 13.80 METERS (45.3 FEET) SW OF NW CORNER OF
 HV6553'PAVILION.  THE STATION MARK IS A BRONZE TABLET (STAMPED 12
 HV6553'T), SET IN CONCRETE IN A TILE WHICH IS SURROUNDED WITH A MASS
 HV6553'OF CONCRETE.  A 12-INCH CEDAR TREE IS 44.18 METERS
 HV6553'(144.9 FEET) FROM THE STATION N 60 DEG 48 MIN W.  IT
 HV6553'IS THE NEAREST TO THE STATION AND MOST WESTERLY OF A CLUMP OF
 HV6553'FIVE TREES STANDING IN LOW GROUND ABOUT 5 METERS FROM THE
 HV6553'CREEK AND WELL INSIDE THE ENTRANCE.  A LARGE MULBERRY
 HV6553'TREE IS 19.5 METERS (64 FEET) FROM THE STATION S 42 DEG
 HV6553'23 MIN E.  STATION 12,000-YARD FRONT RANGE IS 59.88 METERS
 HV6553'(196.5 FEET) WNW FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6552 ***********************************************************************
 HV6552  DESIGNATION -  12000 YARD FRONT RANGE
 HV6552  PID         -  HV6552
 HV6552  STATE/COUNTY-  MD/ST MARYS
 HV6552  COUNTRY     -  US
 HV6552  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6552
 HV6552                         *CURRENT SURVEY CONTROL
 HV6552  ______________________________________________________________________
 HV6552* NAD 83(1993) POSITION- 38 06 11.22261(N) 076 23 33.15768(W)   ADJUSTED
 HV6552* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6552  ______________________________________________________________________
 HV6552  GEOID HEIGHT    -        -35.012 (meters)                     GEOID18
 HV6552  LAPLACE CORR    -         -6.02  (seconds)                    DEFLEC18
 HV6552  HORZ ORDER      -  SECOND
 HV6552
 HV6552.The horizontal coordinates were established by classical geodetic methods
 HV6552.and adjusted by the National Geodetic Survey in November 1994.
 HV6552
 HV6552.The orthometric height was scaled from a topographic map.
 HV6552
 HV6552.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6552.GEOID18 height accuracy estimate available here.
 HV6552
 HV6552.Click photographs - Photos may exist for this station.
 HV6552
 HV6552.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6552
 HV6552. The following values were computed from the NAD 83(1993) position.
 HV6552
 HV6552;                    North         East     Units Scale Factor Converg.
 HV6552;SPC MD       -    48,625.685   453,281.319   MT  1.00004008   +0 22 52.5
 HV6552;SPC MD       -   159,532.77  1,487,140.46   sFT  1.00004008   +0 22 52.5
 HV6552;SPC VA S     - 1,198,474.640 3,684,833.350   MT  1.00002775   +1 16 44.6
 HV6552;SPC VA S     - 3,931,995.55 12,089,324.08   sFT  1.00002775   +1 16 44.6
 HV6552;UTM  18      - 4,218,171.874   377,906.874   MT  0.99978359   -0 51 33.9
 HV6552
 HV6552!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6552!SPC MD       -   1.00000554  x   1.00004008  =   1.00004562
 HV6552!SPC VA S     -   1.00000554  x   1.00002775  =   1.00003329
 HV6552!UTM  18      -   1.00000554  x   0.99978359  =   0.99978913
 HV6552
 HV6552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7790618171(NAD 83)
 HV6552
 HV6552                          SUPERSEDED SURVEY CONTROL
 HV6552
 HV6552  NAD 83(1991)-  38 06 11.22163(N)    076 23 33.16010(W) AD(       ) 2
 HV6552  NAD 83(1986)-  38 06 11.22305(N)    076 23 33.17432(W) AD(       ) 2
 HV6552  NAD 27      -  38 06 10.76600(N)    076 23 34.36400(W) AD(       ) 2
 HV6552  USSD        -  38 06 11.17000(N)    076 23 34.08400(W) AD(       ) 3
 HV6552
 HV6552.Superseded values are not recommended for survey control.
 HV6552
 HV6552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6552.See file dsdata.pdf to determine how the superseded data were derived.
 HV6552
 HV6552_MARKER: DS = TRIANGULATION STATION DISK
 HV6552_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6552_MARK LOGO: CGS
 HV6552_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6552
 HV6552  HISTORY     - Date     Condition        Report By
 HV6552  HISTORY     - 1919     MONUMENTED       CGS
 HV6552  HISTORY     - 1959     GOOD             CGS
 HV6552  HISTORY     - 1960     GOOD             CGS
 HV6552
 HV6552                          STATION DESCRIPTION
 HV6552
 HV6552'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6552'STATION IS ON NE SIDE OF POTOMAC RIVER, ON SAND SPIT ON W SIDE
 HV6552'OF ENTRANCE TO CALVERT CREEK, NEAR THE CENTER AND HIGHEST PART
 HV6552'OF SPIT, 1.5 FEET ABOVE HIGH WATER, 26 METERS FROM POINT WHERE
 HV6552'THERE WAS FORMERLY A FOOTBRIDGE 20 METERS N OF HIGH-WATER LINE
 HV6552'JUST OUTSIDE THE ENTRANCE AT A POINT 27 METERS FROM END OF OLD
 HV6552'FOOTBRIDGE, AND IN LINE WITH GRAY POINT.  IT IS 24.5 METERS
 HV6552'(80 FEET) FROM HIGH-WATER LINE AT MARSHY POINT INSIDE THE CREEK
 HV6552'WHICH IS 20 METERS FROM END OF OLD FOOTBRIDGE.  THE MARSH
 HV6552'RE-ENTERS THE SPIT ON THE INSIDE TO A POINT ABOUT 10 METERS FROM
 HV6552'THE STATION IN A DIRECTION OPPOSITE FROM TANGENT TO GRAY
 HV6552'POINT.
 HV6552'
 HV6552'STATION MARK IS A BRONZE TABLET IN CONCRETE IN A TILE
 HV6552'SURROUNDED BY A MASS OF CONCRETE.  STATION 12,000-YARD FRONT
 HV6552'RANGE TRIAL IS 59.88 METERS (196.5 FEET) SOUTHEASTERLY FROM
 HV6552'THE STATION.
 HV6552
 HV6552                          STATION RECOVERY (1959)
 HV6552
 HV6552'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (GFW)
 HV6552'THE STATION WAS RECOVERED AS DESCRIBED.
 HV6552'
 HV6552'1.  THE STATION IS NOW ABOUT 70 FEET NORTH OF SHORE LINE AND
 HV6552'ABOUT 70 FEET SW OF SHORE LINE OF CALVERT CREEK.
 HV6552'
 HV6552'2.  THE WOODEN RANGE POLE AND SUPPORTS NO LONGER EXIST.
 HV6552
 HV6552                          STATION RECOVERY (1960)
 HV6552
 HV6552'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6552'STATION RECOVERED IN GOOD CONDITION.
 HV6552'
 HV6552'A NEW HYDRO SIGNAL BUILT OVER THE STATION IS IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6565 ***********************************************************************
 HV6565  DESIGNATION -  12000 YARD REAR RANGE
 HV6565  PID         -  HV6565
 HV6565  STATE/COUNTY-  MD/ST MARYS
 HV6565  COUNTRY     -  US
 HV6565  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6565
 HV6565                         *CURRENT SURVEY CONTROL
 HV6565  ______________________________________________________________________
 HV6565* NAD 83(1993) POSITION- 38 06 27.40871(N) 076 23 20.78857(W)   ADJUSTED
 HV6565* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6565  ______________________________________________________________________
 HV6565  GEOID HEIGHT    -        -35.017 (meters)                     GEOID18
 HV6565  LAPLACE CORR    -         -5.98  (seconds)                    DEFLEC18
 HV6565  HORZ ORDER      -  THIRD
 HV6565
 HV6565.The horizontal coordinates were established by classical geodetic methods
 HV6565.and adjusted by the National Geodetic Survey in November 1994.
 HV6565
 HV6565.The orthometric height was scaled from a topographic map.
 HV6565
 HV6565.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6565.GEOID18 height accuracy estimate available here.
 HV6565
 HV6565.Click photographs - Photos may exist for this station.
 HV6565
 HV6565.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6565
 HV6565. The following values were computed from the NAD 83(1993) position.
 HV6565
 HV6565;                    North         East     Units Scale Factor Converg.
 HV6565;SPC MD       -    49,126.769   453,579.342   MT  1.00003904   +0 23 00.3
 HV6565;SPC MD       -   161,176.74  1,488,118.22   sFT  1.00003904   +0 23 00.3
 HV6565;SPC VA S     - 1,198,980.327 3,685,123.482   MT  1.00002876   +1 16 52.2
 HV6565;SPC VA S     - 3,933,654.62 12,090,275.96   sFT  1.00002876   +1 16 52.2
 HV6565;UTM  18      - 4,218,666.260   378,215.598   MT  0.99978266   -0 51 26.6
 HV6565
 HV6565!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6565!SPC MD       -   1.00000554  x   1.00003904  =   1.00004458
 HV6565!SPC VA S     -   1.00000554  x   1.00002876  =   1.00003430
 HV6565!UTM  18      -   1.00000554  x   0.99978266  =   0.99978820
 HV6565
 HV6565_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7821518666(NAD 83)
 HV6565
 HV6565                          SUPERSEDED SURVEY CONTROL
 HV6565
 HV6565  NAD 83(1991)-  38 06 27.40779(N)    076 23 20.79090(W) AD(       ) 3
 HV6565  NAD 83(1986)-  38 06 27.40915(N)    076 23 20.80517(W) AD(       ) 3
 HV6565  NAD 27      -  38 06 26.95600(N)    076 23 21.98400(W) AD(       ) 3
 HV6565  USSD        -  38 06 27.35400(N)    076 23 21.72800(W) AD(       ) 3
 HV6565
 HV6565.Superseded values are not recommended for survey control.
 HV6565
 HV6565.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6565.See file dsdata.pdf to determine how the superseded data were derived.
 HV6565
 HV6565_MARKER: DS = TRIANGULATION STATION DISK
 HV6565_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6565_MARK LOGO: CGS
 HV6565_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6565
 HV6565  HISTORY     - Date     Condition        Report By
 HV6565  HISTORY     - 1919     MONUMENTED       CGS
 HV6565  HISTORY     - 1958     GOOD             CGS
 HV6565
 HV6565                          STATION DESCRIPTION
 HV6565
 HV6565'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6565'STATION IS AT THE HEAD OF CALVERT CREEK, ON LAND JUTTING OUT
 HV6565'BETWEEN THE TWO PRONGS OF THE CREEK, 3.2 METERS BACK FROM EDGE
 HV6565'OF AN 8-FOOT BANK, IN THE EDGE OF A GARDEN AND 65 METERS SW OF
 HV6565'THE HOUSE OF A MAN NAMED WAGGMAN.  THE BANK IS COVERED WITH A
 HV6565'HEAVY GROWTH OF UNDERBRUSH.  STATION IS 10.8 METERS (35.4 FEET)
 HV6565'S OF AN OLD PEAR TREE WHICH STANDS ALONE IN A GARDEN, 10 METERS
 HV6565'(33 FEET) NW OF A CHERRY TREE AT EDGE OF BANK, AND 45 METERS W
 HV6565'OF THE GARDEN FENCE.
 HV6565'
 HV6565'STATION AND REFERENCE MARKS ARE BRONZE TABLETS SET IN CONCRETE
 HV6565'IN TILES SURROUNDED BY MASSES OF CONCRETE.
 HV6565'
 HV6565'THE REFERENCE MARK IS IN THE YARD, 0.5 METERS FROM THE GARDEN
 HV6565'FENCE, 11 METERS FROM A 6-INCH WALNUT TREE WHICH IS IN LINE WITH
 HV6565'STATION 12,000-YARD FRONT RANGE, 20 METERS FROM HIGH WATER AND
 HV6565'21.69 METERS (71.2 FEET) FROM THE NEAREST CHIMNEY OF A FRAME
 HV6565'HOUSE WITH BRICK ENDS.  IT IS 46.13 METERS (151.3 FEET) FROM THE
 HV6565'STATION.
 HV6565'
 HV6565'AT THE REFERENCE MARK, THE DIRECTIONS TO THE STATION AND THE
 HV6565'CHIMNEY ARE, RESPECTIVELY, 87 DEG 46.7 MIN AND 197 DEG 26.0 MIN TO
 HV6565'THE RIGHT OF A LINE TO STATION 12,000-YARD FRONT RANGE.
 HV6565
 HV6565                          STATION RECOVERY (1958)
 HV6565
 HV6565'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6565'THE STATION AND ITS REFERENCE MARK WERE RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1438 ***********************************************************************
 HV1438  DESIGNATION -  1209 WSSC
 HV1438  PID         -  HV1438
 HV1438  STATE/COUNTY-  MD/MONTGOMERY
 HV1438  COUNTRY     -  US
 HV1438  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1438
 HV1438                         *CURRENT SURVEY CONTROL
 HV1438  ______________________________________________________________________
 HV1438* NAD 83(1986) POSITION- 38 59 28.     (N) 076 59 37.     (W)   SCALED
 HV1438* NAVD 88 ORTHO HEIGHT -    72.209 (meters)      236.91  (feet) ADJUSTED
 HV1438  ______________________________________________________________________
 HV1438  GEOID HEIGHT    -        -32.026 (meters)                     GEOID18
 HV1438  DYNAMIC HEIGHT  -         72.171 (meters)      236.78  (feet) COMP
 HV1438  MODELED GRAVITY -    980,095.3   (mgal)                       NAVD 88
 HV1438
 HV1438  VERT ORDER      -  SECOND    CLASS 0
 HV1438
 HV1438.The horizontal coordinates were scaled from a map and have
 HV1438.an estimated accuracy of +/- 6 seconds.
 HV1438
 HV1438.The orthometric height was determined by differential leveling and
 HV1438.adjusted by the NATIONAL GEODETIC SURVEY
 HV1438.in June 1991.
 HV1438
 HV1438.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1438.GEOID18 height accuracy estimate available here.
 HV1438
 HV1438.Click photographs - Photos may exist for this station.
 HV1438
 HV1438.The dynamic height is computed by dividing the NAVD 88
 HV1438.geopotential number by the normal gravity value computed on the
 HV1438.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1438.degrees latitude (g = 980.6199 gals.).
 HV1438
 HV1438.The modeled gravity was interpolated from observed gravity values.
 HV1438
 HV1438;                    North         East    Units  Estimated Accuracy
 HV1438;SPC MD       -   147,020.      400,550.      MT  (+/- 180 meters Scaled)
 HV1438
 HV1438_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ273176(NAD 83)
 HV1438
 HV1438                          SUPERSEDED SURVEY CONTROL
 HV1438
 HV1438  NGVD 29 (11/26/84)   72.427  (m)          237.62   (f) ADJUSTED    2 0
 HV1438
 HV1438.Superseded values are not recommended for survey control.
 HV1438
 HV1438.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1438.See file dsdata.pdf to determine how the superseded data were derived.
 HV1438
 HV1438_MARKER: Z = SEE DESCRIPTION
 HV1438_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1438_SP_SET: CONC BASE
 HV1438_STAMPING: WSSC 1209
 HV1438_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1438
 HV1438  HISTORY     - Date     Condition        Report By
 HV1438  HISTORY     - UNK      MONUMENTED       WSSC
 HV1438  HISTORY     - 1952     GOOD             CGS
 HV1438
 HV1438                          STATION DESCRIPTION
 HV1438
 HV1438'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV1438'NEAR BROWNS CORNER.
 HV1438'ABOUT 1200 FEET SOUTH ALONG CARROLL AVENUE FROM BROWNS CORNER,
 HV1438'MONTGOMERY COUNTY, ON THE WEST SIDE OF CARROLL CARROLL AVENUE,
 HV1438'AT THE NORTHERLY ONE OF TWO STEEL GATEPOSTS, AT THE ENTRANCE
 HV1438'TO THE CYNTHIA WARNER SCHOOL, IN THE CONCRETE BASE, 4 YARDS
 HV1438'FROM A FIRE HYDRANT, 1/2 FOOT FROM THE POST, AND NEAR THE EDGE
 HV1438'OF THE CONCRETE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0632 ***********************************************************************
 JV0632  DESIGNATION -  121
 JV0632  PID         -  JV0632
 JV0632  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0632  COUNTRY     -  US
 JV0632  USGS QUAD   -  RELAY (2016)
 JV0632
 JV0632                         *CURRENT SURVEY CONTROL
 JV0632  ______________________________________________________________________
 JV0632* NAD 83(1986) POSITION- 39 10 41.     (N) 076 44 51.     (W)   SCALED
 JV0632* NAVD 88 ORTHO HEIGHT -    36.495 (meters)      119.73  (feet) ADJUSTED
 JV0632  ______________________________________________________________________
 JV0632  GEOID HEIGHT    -        -32.467 (meters)                     GEOID18
 JV0632  DYNAMIC HEIGHT  -         36.476 (meters)      119.67  (feet) COMP
 JV0632  MODELED GRAVITY -    980,093.1   (mgal)                       NAVD 88
 JV0632
 JV0632  VERT ORDER      -  FIRST     CLASS II
 JV0632
 JV0632.The horizontal coordinates were scaled from a map and have
 JV0632.an estimated accuracy of +/- 6 seconds.
 JV0632
 JV0632.The orthometric height was determined by differential leveling and
 JV0632.adjusted by the NATIONAL GEODETIC SURVEY
 JV0632.in June 1991.
 JV0632
 JV0632.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0632.GEOID18 height accuracy estimate available here.
 JV0632
 JV0632.Click photographs - Photos may exist for this station.
 JV0632
 JV0632.The dynamic height is computed by dividing the NAVD 88
 JV0632.geopotential number by the normal gravity value computed on the
 JV0632.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0632.degrees latitude (g = 980.6199 gals.).
 JV0632
 JV0632.The modeled gravity was interpolated from observed gravity values.
 JV0632
 JV0632;                    North         East    Units  Estimated Accuracy
 JV0632;SPC MD       -   167,800.      421,820.      MT  (+/- 180 meters Scaled)
 JV0632
 JV0632_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ490379(NAD 83)
 JV0632
 JV0632                          SUPERSEDED SURVEY CONTROL
 JV0632
 JV0632  NGVD 29 (11/26/84)   36.706  (m)          120.43   (f) ADJUSTED    1 2
 JV0632
 JV0632.Superseded values are not recommended for survey control.
 JV0632
 JV0632.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0632.See file dsdata.pdf to determine how the superseded data were derived.
 JV0632
 JV0632_MARKER: DD = SURVEY DISK
 JV0632_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0632_SP_SET: FOUNDATION
 JV0632_STAMPING: 121 ADJ 1903
 JV0632_MARK LOGO: USGS
 JV0632_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0632
 JV0632  HISTORY     - Date     Condition        Report By
 JV0632  HISTORY     - 1905     MONUMENTED       USGS
 JV0632  HISTORY     - 1971     GOOD             NGS
 JV0632  HISTORY     - 1973     GOOD             MDDT
 JV0632
 JV0632                          STATION DESCRIPTION
 JV0632
 JV0632'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0632'AT DORSEY.
 JV0632'AT DORSEY, 87 1/2 FEET SOUTH OF THE SOUTH CORNER OF THE
 JV0632'BALTIMORE AND OHIO RAILROAD OVERPASS FOR STATE HIGHWAY 176,
 JV0632'SET VERTICALLY IN THE NORTH FACE OF THE CONCRETE AND STONE
 JV0632'FOUNDATION FOR A TWO-STORY FRAME HOUSE, 49 FEET SOUTHEAST OF
 JV0632'THE SOUTHEAST RAIL OF THE SOUTHEAST TRACK, AND ABOUT 4 INCHES
 JV0632'ABOVE THE SURFACE OF THE GROUND.
 JV0632
 JV0632                          STATION RECOVERY (1973)
 JV0632
 JV0632'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1973
 JV0632'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1392 ***********************************************************************
 JV1392  DESIGNATION -  121 A
 JV1392  PID         -  JV1392
 JV1392  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1392  COUNTRY     -  US
 JV1392  USGS QUAD   -  LAUREL (2016)
 JV1392
 JV1392                         *CURRENT SURVEY CONTROL
 JV1392  ______________________________________________________________________
 JV1392* NAD 83(1986) POSITION- 39 00 16.     (N) 076 47 06.     (W)   SCALED
 JV1392* NAVD 88 ORTHO HEIGHT -    43.152 (meters)      141.57  (feet) ADJUSTED
 JV1392  ______________________________________________________________________
 JV1392  GEOID HEIGHT    -        -32.519 (meters)                     GEOID18
 JV1392  DYNAMIC HEIGHT  -         43.129 (meters)      141.50  (feet) COMP
 JV1392  MODELED GRAVITY -    980,086.0   (mgal)                       NAVD 88
 JV1392
 JV1392  VERT ORDER      -  FIRST     CLASS II
 JV1392
 JV1392.The horizontal coordinates were scaled from a map and have
 JV1392.an estimated accuracy of +/- 6 seconds.
 JV1392
 JV1392.The orthometric height was determined by differential leveling and
 JV1392.adjusted by the NATIONAL GEODETIC SURVEY
 JV1392.in June 1991.
 JV1392
 JV1392.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1392.GEOID18 height accuracy estimate available here.
 JV1392
 JV1392.Click photographs - Photos may exist for this station.
 JV1392
 JV1392.The dynamic height is computed by dividing the NAVD 88
 JV1392.geopotential number by the normal gravity value computed on the
 JV1392.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1392.degrees latitude (g = 980.6199 gals.).
 JV1392
 JV1392.The modeled gravity was interpolated from observed gravity values.
 JV1392
 JV1392;                    North         East    Units  Estimated Accuracy
 JV1392;SPC MD       -   148,520.      418,620.      MT  (+/- 180 meters Scaled)
 JV1392
 JV1392_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ454187(NAD 83)
 JV1392
 JV1392                          SUPERSEDED SURVEY CONTROL
 JV1392
 JV1392  NGVD 29 (11/26/84)   43.376  (m)          142.31   (f) ADJUSTED    1 2
 JV1392
 JV1392.Superseded values are not recommended for survey control.
 JV1392
 JV1392.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1392.See file dsdata.pdf to determine how the superseded data were derived.
 JV1392
 JV1392_MARKER: Q = CHISELED SQUARE
 JV1392_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1392_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1392
 JV1392  HISTORY     - Date     Condition        Report By
 JV1392  HISTORY     - UNK      MONUMENTED       CGS
 JV1392  HISTORY     - 1941     GOOD             CGS
 JV1392  HISTORY     - 1956     GOOD             CGS
 JV1392
 JV1392                          STATION DESCRIPTION
 JV1392
 JV1392'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1392'AT BOWIE.
 JV1392'AT BOWIE, PRINCE GEORGES COUNTY, ABOUT 0.4 MILE SOUTHWEST OF
 JV1392'THE PENNSYLVANIA RAILROAD STATION, ABOUT 126 FEET SOUTHWEST OF
 JV1392'THE NORTHWESTERNMOST POWER-TRANSMISSION LINE POLE AT MILEAGE
 JV1392'120.88, ABOUT 113 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A
 JV1392'SMALL WHITE HOUSE, AND 25 FEET NORTHWEST OF THE NORTHWEST RAIL.
 JV1392'A CHISELED SQUARE, ON THE TOP OF A STONE POST MARKED B M 121 A
 JV1392'AND PROJECTING ABOUT 15 INCHES ABOVE GROUND.
 JV1392
 JV1392                          STATION RECOVERY (1956)
 JV1392
 JV1392'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956
 JV1392'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4801 ***********************************************************************
 AB4801  DESIGNATION -  122 RESET 1994
 AB4801  PID         -  AB4801
 AB4801  STATE/COUNTY-  MD/CARROLL
 AB4801  COUNTRY     -  US
 AB4801  USGS QUAD   -  LITTLESTOWN (2019)
 AB4801
 AB4801                         *CURRENT SURVEY CONTROL
 AB4801  ______________________________________________________________________
 AB4801* NAD 83(2011) POSITION- 39 42 03.38956(N) 077 01 54.93768(W)   ADJUSTED
 AB4801* NAD 83(2011) ELLIP HT-   157.374 (meters)        (06/27/12)   ADJUSTED
 AB4801* NAD 83(2011) EPOCH   -  2010.00
 AB4801* NAVD 88 ORTHO HEIGHT -   190.1   (meters)      624.    (feet) GPS OBS
 AB4801  ______________________________________________________________________
 AB4801  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4801  GEOID HEIGHT    -        -32.767 (meters)                     GEOID99
 AB4801  GEOID HEIGHT    -        -32.770 (meters)                     GEOID18
 AB4801  NAD 83(2011) X  -  1,102,765.022 (meters)                     COMP
 AB4801  NAD 83(2011) Y  - -4,788,772.980 (meters)                     COMP
 AB4801  NAD 83(2011) Z  -  4,052,594.017 (meters)                     COMP
 AB4801  LAPLACE CORR    -          5.06  (seconds)                    DEFLEC18
 AB4801
 AB4801  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4801  Standards:
 AB4801         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4801            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4801  -------------------------------------------------------------------
 AB4801  NETWORK    1.28   3.21           0.60   0.40   1.64     -0.06242248
 AB4801  -------------------------------------------------------------------
 AB4801  Click here for local accuracies and other accuracy information.
 AB4801
 AB4801.The horizontal coordinates were established by GPS observations
 AB4801.and adjusted by the National Geodetic Survey in June 2012.
 AB4801
 AB4801.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4801.been affixed to the stable North American tectonic plate. See 
 AB4801.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4801
 AB4801.The horizontal coordinates are valid at the epoch date displayed above
 AB4801.which is a decimal equivalence of Year/Month/Day.
 AB4801
 AB4801.The orthometric height was determined by GPS observations and a
 AB4801.high-resolution geoid model.
 AB4801
 AB4801.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4801.GEOID18 height accuracy estimate available here.
 AB4801
 AB4801.Click photographs - Photos may exist for this station.
 AB4801
 AB4801.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4801
 AB4801.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4801
 AB4801.The ellipsoidal height was determined by GPS observations
 AB4801.and is referenced to NAD 83.
 AB4801
 AB4801. The following values were computed from the NAD 83(2011) position.
 AB4801
 AB4801;                    North         East     Units Scale Factor Converg.
 AB4801;SPC MD       -   225,825.995   397,261.616   MT  1.00005354   -0 01 12.1
 AB4801;SPC MD       -   740,897.45  1,303,349.15   sFT  1.00005354   -0 01 12.1
 AB4801;UTM  18      - 4,396,539.162   325,794.243   MT  0.99997364   -1 17 53.8
 AB4801
 AB4801!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4801!SPC MD       -   0.99997531  x   1.00005354  =   1.00002885
 AB4801!UTM  18      -   0.99997531  x   0.99997364  =   0.99994895
 AB4801
 AB4801_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2579496539(NAD 83)
 AB4801
 AB4801                          SUPERSEDED SURVEY CONTROL
 AB4801
 AB4801  NAD 83(2007)-  39 42 03.38987(N)    077 01 54.93828(W) AD(2002.00) 0
 AB4801  ELLIP H (02/10/07)  157.391  (m)                       GP(2002.00)    
 AB4801  ELLIP H (08/30/02)  157.351  (m)                       GP(       ) 4 2
 AB4801  NAD 83(1991)-  39 42 03.38916(N)    077 01 54.93897(W) AD(       ) 1
 AB4801  ELLIP H (07/03/96)  157.309  (m)                       GP(       ) 1 1
 AB4801  NAVD 88 (07/03/96)  190.1    (m)  GEOID93  model used  GPS OBS        
 AB4801
 AB4801.Superseded values are not recommended for survey control.
 AB4801
 AB4801.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4801.See file dsdata.pdf to determine how the superseded data were derived.
 AB4801
 AB4801_MARKER: DD = SURVEY DISK
 AB4801_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4801_STAMPING: 122 RESET 1994
 AB4801_MARK LOGO: MD-013
 AB4801_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4801_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4801+STABILITY: SURFACE MOTION
 AB4801_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4801+SATELLITE: SATELLITE OBSERVATIONS - September 02, 2021
 AB4801
 AB4801  HISTORY     - Date     Condition        Report By
 AB4801  HISTORY     - 1994     MONUMENTED       MD-013
 AB4801  HISTORY     - 20210902 GOOD             MDSHA
 AB4801
 AB4801                          STATION DESCRIPTION
 AB4801
 AB4801'DESCRIBED BY CARROLL COUNTY MARYLAND 1994
 AB4801'STATION IS LOCATED ABOUT 9 MI (14.5 KM) NORTH OF THE CENTER OF
 AB4801'WESTMINSTER AND ABOUT 1.2 MI (1.9 KM) SOUTH OF THE PENNSYLVANIA STATE
 AB4801'LINE. TO REACH STATION FROM THE RAILROAD CROSSING AT MD ROUTE 97 (MAIN
 AB4801'STREET AND PENNSYLVANIA AVE.) IN WESTMINSTER, GO NORTH ON MD ROUTE 97
 AB4801'FOR 9.1 MI (14.6 KM) TO THE INTERSECTION WITH SILVER RUN VALLEY ROAD.
 AB4801'TURN RIGHT AND GO NORTH ON SILVER RUN VALLEY ROAD FOR 1.3 MI (2.1 KM)
 AB4801'TO THE INTERSECTION WITH TURKEYFOOT ROAD AND THE STATION ON THE LEFT.
 AB4801'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AB4801'SET FLUSH WITH THE GROUND. IT IS 22.0 FT (6.7 M) NORTH OF THE
 AB4801'CENTERLINE OF SILVER RUN VALLEY ROAD, 30.0 FT (9.1 M) WEST OF THE
 AB4801'CENTERLINE OF TURKEYFOOT ROAD, 65.0 FT (19.8 M) WEST OF POWER POLE
 AB4801'NO.364422 AND 4.5 FT (1.4 M) SOUTH OF THE CORNER OF A FENCE.
 AB4801
 AB4801                          STATION RECOVERY (2021)
 AB4801
 AB4801'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 AB4801'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1242 ***********************************************************************
 HV1242  DESIGNATION -  1222 WSSC
 HV1242  PID         -  HV1242
 HV1242  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1242  COUNTRY     -  US
 HV1242  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1242
 HV1242                         *CURRENT SURVEY CONTROL
 HV1242  ______________________________________________________________________
 HV1242* NAD 83(1986) POSITION- 38 53 29.     (N) 076 54 36.     (W)   SCALED
 HV1242* NAVD 88 ORTHO HEIGHT -    29.894 (meters)       98.08  (feet) ADJUSTED
 HV1242  ______________________________________________________________________
 HV1242  GEOID HEIGHT    -        -32.331 (meters)                     GEOID18
 HV1242  DYNAMIC HEIGHT  -         29.877 (meters)       98.02  (feet) COMP
 HV1242  MODELED GRAVITY -    980,081.8   (mgal)                       NAVD 88
 HV1242
 HV1242  VERT ORDER      -  FIRST     CLASS II
 HV1242
 HV1242.The horizontal coordinates were scaled from a map and have
 HV1242.an estimated accuracy of +/- 6 seconds.
 HV1242
 HV1242.The orthometric height was determined by differential leveling and
 HV1242.adjusted by the NATIONAL GEODETIC SURVEY
 HV1242.in June 1991.
 HV1242
 HV1242.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1242.GEOID18 height accuracy estimate available here.
 HV1242
 HV1242.Click photographs - Photos may exist for this station.
 HV1242
 HV1242.The dynamic height is computed by dividing the NAVD 88
 HV1242.geopotential number by the normal gravity value computed on the
 HV1242.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1242.degrees latitude (g = 980.6199 gals.).
 HV1242
 HV1242.The modeled gravity was interpolated from observed gravity values.
 HV1242
 HV1242;                    North         East    Units  Estimated Accuracy
 HV1242;SPC MD       -   135,950.      407,810.      MT  (+/- 180 meters Scaled)
 HV1242
 HV1242_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ343064(NAD 83)
 HV1242
 HV1242                          SUPERSEDED SURVEY CONTROL
 HV1242
 HV1242  NGVD 29 (11/26/84)   30.127  (m)           98.84   (f) ADJUSTED    1 2
 HV1242
 HV1242.Superseded values are not recommended for survey control.
 HV1242
 HV1242.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1242.See file dsdata.pdf to determine how the superseded data were derived.
 HV1242
 HV1242_MARKER: Z = SEE DESCRIPTION
 HV1242_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1242_SP_SET: STEPS
 HV1242_STAMPING: 1222
 HV1242_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1242
 HV1242  HISTORY     - Date     Condition        Report By
 HV1242  HISTORY     - UNK      MONUMENTED       WSSC
 HV1242  HISTORY     - 1929     GOOD             CGS
 HV1242  HISTORY     - 1952     GOOD             CGS
 HV1242
 HV1242                          STATION DESCRIPTION
 HV1242
 HV1242'DESCRIBED BY COAST AND GEODETIC SURVEY 1929
 HV1242'AT MARYLAND PARK.
 HV1242'AT MARYLAND PARK, PRINCE GEORGES COUNTY, AT THE HIGH SCHOOL,
 HV1242'ON THE NORTHWEST SIDE OF THE BUILDING, AT THE NORTHWEST SET
 HV1242'OF STEPS LEADING FROM THE STREET UP TO THE ENTRANCE, AND ON
 HV1242'THE SOUTHEAST END OF THE BOTTOM STEP.  A WASHINGTON SUBURBAN
 HV1242'SANITARY DISTRICT STANDARD BRASS SCREW AND WASHER, STAMPED 1222.
 HV1242
 HV1242                          STATION RECOVERY (1952)
 HV1242
 HV1242'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 HV1242'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1243 ***********************************************************************
 HV1243  DESIGNATION -  1225 WSSC
 HV1243  PID         -  HV1243
 HV1243  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1243  COUNTRY     -  US
 HV1243  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1243
 HV1243                         *CURRENT SURVEY CONTROL
 HV1243  ______________________________________________________________________
 HV1243* NAD 83(1986) POSITION- 38 53 21.     (N) 076 54 50.     (W)   SCALED
 HV1243* NAVD 88 ORTHO HEIGHT -    28.280 (meters)       92.78  (feet) ADJUSTED
 HV1243  ______________________________________________________________________
 HV1243  GEOID HEIGHT    -        -32.324 (meters)                     GEOID18
 HV1243  DYNAMIC HEIGHT  -         28.265 (meters)       92.73  (feet) COMP
 HV1243  MODELED GRAVITY -    980,081.7   (mgal)                       NAVD 88
 HV1243
 HV1243  VERT ORDER      -  FIRST     CLASS II
 HV1243
 HV1243.The horizontal coordinates were scaled from a map and have
 HV1243.an estimated accuracy of +/- 6 seconds.
 HV1243
 HV1243.The orthometric height was determined by differential leveling and
 HV1243.adjusted by the NATIONAL GEODETIC SURVEY
 HV1243.in June 1991.
 HV1243
 HV1243.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1243.GEOID18 height accuracy estimate available here.
 HV1243
 HV1243.Click photographs - Photos may exist for this station.
 HV1243
 HV1243.The dynamic height is computed by dividing the NAVD 88
 HV1243.geopotential number by the normal gravity value computed on the
 HV1243.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1243.degrees latitude (g = 980.6199 gals.).
 HV1243
 HV1243.The modeled gravity was interpolated from observed gravity values.
 HV1243
 HV1243;                    North         East    Units  Estimated Accuracy
 HV1243;SPC MD       -   135,710.      407,470.      MT  (+/- 180 meters Scaled)
 HV1243
 HV1243_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ340062(NAD 83)
 HV1243
 HV1243                          SUPERSEDED SURVEY CONTROL
 HV1243
 HV1243  NGVD 29 (11/26/84)   28.514  (m)           93.55   (f) ADJUSTED    1 2
 HV1243
 HV1243.Superseded values are not recommended for survey control.
 HV1243
 HV1243.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1243.See file dsdata.pdf to determine how the superseded data were derived.
 HV1243
 HV1243_MARKER: Q = CHISELED SQUARE
 HV1243_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1243_SP_SET: RETAINING WALL
 HV1243_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1243
 HV1243  HISTORY     - Date     Condition        Report By
 HV1243  HISTORY     - UNK      MONUMENTED       WSSC
 HV1243  HISTORY     - 1929     GOOD             CGS
 HV1243  HISTORY     - 1952     GOOD             CGS
 HV1243
 HV1243                          STATION DESCRIPTION
 HV1243
 HV1243'DESCRIBED BY COAST AND GEODETIC SURVEY 1929
 HV1243'0.4 MI NE FROM CAPITOL HEIGHTS.
 HV1243'0.4 MILE NORTHEAST OF CAPITOL HEIGHTS, PRINCE GEORGES COUNTY,
 HV1243'AT THE SOUTHEAST CORNER OF THE INTERSECTION OF SIXTY-FIRST
 HV1243'STREET AND SOUTHERN AVENUE, ON THE TOP OF THE CONCRETE RETAINING
 HV1243'WALL, AND AT THE CENTERLINE OF THE WALL.  A CHISELED SQUARE.
 HV1243
 HV1243                          STATION RECOVERY (1952)
 HV1243
 HV1243'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 HV1243'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1244 ***********************************************************************
 HV1244  DESIGNATION -  1226 WSSC
 HV1244  PID         -  HV1244
 HV1244  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1244  COUNTRY     -  US
 HV1244  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1244
 HV1244                         *CURRENT SURVEY CONTROL
 HV1244  ______________________________________________________________________
 HV1244* NAD 83(1986) POSITION- 38 53 12.     (N) 076 54 51.     (W)   SCALED
 HV1244* NAVD 88 ORTHO HEIGHT -    31.610 (meters)      103.71  (feet) ADJUSTED
 HV1244  ______________________________________________________________________
 HV1244  GEOID HEIGHT    -        -32.326 (meters)                     GEOID18
 HV1244  DYNAMIC HEIGHT  -         31.593 (meters)      103.65  (feet) COMP
 HV1244  MODELED GRAVITY -    980,080.8   (mgal)                       NAVD 88
 HV1244
 HV1244  VERT ORDER      -  FIRST     CLASS II
 HV1244
 HV1244.The horizontal coordinates were scaled from a map and have
 HV1244.an estimated accuracy of +/- 6 seconds.
 HV1244
 HV1244.The orthometric height was determined by differential leveling and
 HV1244.adjusted by the NATIONAL GEODETIC SURVEY
 HV1244.in June 1991.
 HV1244
 HV1244.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1244.GEOID18 height accuracy estimate available here.
 HV1244
 HV1244.Click photographs - Photos may exist for this station.
 HV1244
 HV1244.The dynamic height is computed by dividing the NAVD 88
 HV1244.geopotential number by the normal gravity value computed on the
 HV1244.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1244.degrees latitude (g = 980.6199 gals.).
 HV1244
 HV1244.The modeled gravity was interpolated from observed gravity values.
 HV1244
 HV1244;                    North         East    Units  Estimated Accuracy
 HV1244;SPC MD       -   135,430.      407,450.      MT  (+/- 180 meters Scaled)
 HV1244
 HV1244_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ339059(NAD 83)
 HV1244
 HV1244                          SUPERSEDED SURVEY CONTROL
 HV1244
 HV1244  NGVD 29 (11/26/84)   31.844  (m)          104.47   (f) ADJUSTED    1 2
 HV1244
 HV1244.Superseded values are not recommended for survey control.
 HV1244
 HV1244.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1244.See file dsdata.pdf to determine how the superseded data were derived.
 HV1244
 HV1244_MARKER: Q = CHISELED SQUARE
 HV1244_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1244_SP_SET: RETAINING WALL
 HV1244_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1244
 HV1244  HISTORY     - Date     Condition        Report By
 HV1244  HISTORY     - UNK      MONUMENTED       WSSC
 HV1244  HISTORY     - 1929     GOOD             CGS
 HV1244  HISTORY     - 1952     GOOD             CGS
 HV1244
 HV1244                          STATION DESCRIPTION
 HV1244
 HV1244'DESCRIBED BY COAST AND GEODETIC SURVEY 1929
 HV1244'AT CAPITOL HEIGHTS.
 HV1244'AT CAPITOL HEIGHTS, PRINCE GEORGES COUNTY, AT THE NORTHEAST
 HV1244'CORNER OF THE INTERSECTION OF SIXTY-FIRST STREET AND FRANKLIN
 HV1244'AVENUE (THIS IS THE THIRD STREET INTERSECTION ON SIXTY-FIRST
 HV1244'STREET NORTH OF THE BAPTIST CHURCH), ON THE TOP OF THE CONCRETE
 HV1244'RETAINING WALL, AND AT THE MIDDLE OF A CURVE IN THE WALL.  A
 HV1244'CHISELED SQUARE.
 HV1244
 HV1244                          STATION RECOVERY (1952)
 HV1244
 HV1244'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 HV1244'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1319 ***********************************************************************
 HV1319  DESIGNATION -  1227 WSSC
 HV1319  PID         -  HV1319
 HV1319  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1319  COUNTRY     -  US
 HV1319  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1319
 HV1319                         *CURRENT SURVEY CONTROL
 HV1319  ______________________________________________________________________
 HV1319* NAD 83(1986) POSITION- 38 53 05.     (N) 076 54 50.     (W)   SCALED
 HV1319* NAVD 88 ORTHO HEIGHT -    37.37  (+/-2cm)      122.6   (feet) VERTCON3
 HV1319  ______________________________________________________________________
 HV1319  GEOID HEIGHT    -        -32.330 (meters)                     GEOID18
 HV1319  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1319
 HV1319.The horizontal coordinates were scaled from a map and have
 HV1319.an estimated accuracy of +/- 6 seconds.
 HV1319
 HV1319.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1319.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1319
 HV1319.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1319.GEOID18 height accuracy estimate available here.
 HV1319
 HV1319.The vertical order pertains to the NGVD 29 superseded value.
 HV1319
 HV1319.Click photographs - Photos may exist for this station.
 HV1319
 HV1319;                    North         East    Units  Estimated Accuracy
 HV1319;SPC MD       -   135,210.      407,470.      MT  (+/- 180 meters Scaled)
 HV1319
 HV1319_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ339057(NAD 83)
 HV1319
 HV1319                          SUPERSEDED SURVEY CONTROL
 HV1319
 HV1319  NGVD 29 (11/26/84)   37.608  (m)          123.39   (f) ADJUSTED    2 0
 HV1319
 HV1319.Superseded values are not recommended for survey control.
 HV1319
 HV1319.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1319.See file dsdata.pdf to determine how the superseded data were derived.
 HV1319
 HV1319_MARKER: B = BOLT
 HV1319_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1319_SP_SET: STORE BUILDING
 HV1319_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1319
 HV1319  HISTORY     - Date     Condition        Report By
 HV1319  HISTORY     - 1944     MONUMENTED       WSSC
 HV1319
 HV1319                          STATION DESCRIPTION
 HV1319
 HV1319'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1319'AT CAPTIOL HEIGHTS.
 HV1319'AT THE NORTHWEST CORNER OF THE INTERSECTION OF CENTRAL AVENUE AND
 HV1319'SIXTY-FIRST STREET, AT A BRICK STORE BUILDING (SANITARY GROCERY
 HV1319'STORE), NEAR THE SOUTHEAST CORNER OF THE BUILDING, AND IN THE
 HV1319'SOUTH WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0198 ***********************************************************************
 JV0198  DESIGNATION -  123 SKS
 JV0198  PID         -  JV0198
 JV0198  STATE/COUNTY-  MD/HARFORD
 JV0198  COUNTRY     -  US
 JV0198  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0198
 JV0198                         *CURRENT SURVEY CONTROL
 JV0198  ______________________________________________________________________
 JV0198* NAD 83(1986) POSITION- 39 30 19.     (N) 076 23 13.     (W)   SCALED
 JV0198* NAVD 88 ORTHO HEIGHT -   131.941 (meters)      432.88  (feet) ADJUSTED
 JV0198  ______________________________________________________________________
 JV0198  GEOID HEIGHT    -        -32.773 (meters)                     GEOID18
 JV0198  DYNAMIC HEIGHT  -        131.873 (meters)      432.65  (feet) COMP
 JV0198  MODELED GRAVITY -    980,111.9   (mgal)                       NAVD 88
 JV0198
 JV0198  VERT ORDER      -  SECOND    CLASS 0
 JV0198
 JV0198.The horizontal coordinates were scaled from a map and have
 JV0198.an estimated accuracy of +/- 6 seconds.
 JV0198
 JV0198.The orthometric height was determined by differential leveling and
 JV0198.adjusted by the NATIONAL GEODETIC SURVEY
 JV0198.in June 1991.
 JV0198
 JV0198.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0198.GEOID18 height accuracy estimate available here.
 JV0198
 JV0198.Click photographs - Photos may exist for this station.
 JV0198
 JV0198.The dynamic height is computed by dividing the NAVD 88
 JV0198.geopotential number by the normal gravity value computed on the
 JV0198.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0198.degrees latitude (g = 980.6199 gals.).
 JV0198
 JV0198.The modeled gravity was interpolated from observed gravity values.
 JV0198
 JV0198;                    North         East    Units  Estimated Accuracy
 JV0198;SPC MD       -   204,280.      452,730.      MT  (+/- 180 meters Scaled)
 JV0198
 JV0198_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ807737(NAD 83)
 JV0198
 JV0198                          SUPERSEDED SURVEY CONTROL
 JV0198
 JV0198  NGVD 29 (11/26/84)  132.197  (m)          433.72   (f) ADJUSTED    2 0
 JV0198
 JV0198.Superseded values are not recommended for survey control.
 JV0198
 JV0198.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0198.See file dsdata.pdf to determine how the superseded data were derived.
 JV0198
 JV0198_MARKER: DD = SURVEY DISK
 JV0198_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0198_STAMPING: 434 123 SKS 1953
 JV0198_MARK LOGO: USGS
 JV0198_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0198+STABILITY: SURFACE MOTION
 JV0198
 JV0198  HISTORY     - Date     Condition        Report By
 JV0198  HISTORY     - 1953     MONUMENTED       USGS
 JV0198  HISTORY     - 1960     GOOD             CGS
 JV0198  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV0198  HISTORY     - 19891023 MARK NOT FOUND   NGS
 JV0198
 JV0198                          STATION DESCRIPTION
 JV0198
 JV0198'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0198'3.2 MI SW FROM BEL AIR.
 JV0198'ABOUT 2.75 MILES SOUTHWEST ALONG U.S. HIGHWAY 1 FROM THE COURTHOUSE
 JV0198'AT BEL AIR, THENCE ABOUT 0.4 MILE SOUTHWEST ALONG STATE HIGHWAY
 JV0198'147, 183 1/2 FEET NORTHWEST OF THE CENTER OF THE INTERSECTION OF
 JV0198'HIGHWAY 147 AND CONNOLLY ROAD, 15 FEET SOUTHWEST OF THE CENTER
 JV0198'LINE OF CONNOLLY ROAD, 72 FEET NORTHWEST OF THE NORTH CORNER OF
 JV0198'A MAROON COLORED HOUSE, 3 1/2 FEET NORTHWEST OF POWER LINE POLE 30,
 JV0198'ABOUT 2 FEET ABOVE THE LEVEL OF THE ROAD, AND SET IN TOP OF A
 JV0198'CONCRETE POST PROJECTING 2 INCHES.
 JV0198
 JV0198                          STATION RECOVERY (1987)
 JV0198
 JV0198'RECOVERY NOTE BY US POWER SQUADRON 1987 (RB)
 JV0198'MARK NOT FOUND.
 JV0198
 JV0198                          STATION RECOVERY (1989)
 JV0198
 JV0198'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0198'THERE IS NOW A DRIVEWAY AT THE DESCRIBED LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DO7232 ***********************************************************************
 DO7232  DESIGNATION -  124
 DO7232  PID         -  DO7232
 DO7232  STATE/COUNTY-  MD/QUEEN ANNES
 DO7232  COUNTRY     -  US
 DO7232  USGS QUAD   -  KENT ISLAND (2016)
 DO7232
 DO7232                         *CURRENT SURVEY CONTROL
 DO7232  ______________________________________________________________________
 DO7232* NAD 83(2011) POSITION- 38 58 37.02682(N) 076 19 27.78969(W)   ADJUSTED
 DO7232* NAD 83(2011) ELLIP HT-   -28.898 (meters)        (02/02/22)   ADJUSTED
 DO7232* NAD 83(2011) EPOCH   -  2010.00
 DO7232* NAVD 88 ORTHO HEIGHT -     4.677 (meters)       15.34  (feet) ADJUSTED
 DO7232  ______________________________________________________________________
 DO7232  GEOID HEIGHT    -        -33.583 (meters)                     GEOID18
 DO7232  NAD 83(2011) X  -  1,173,828.061 (meters)                     COMP
 DO7232  NAD 83(2011) Y  - -4,824,158.555 (meters)                     COMP
 DO7232  NAD 83(2011) Z  -  3,990,310.045 (meters)                     COMP
 DO7232  LAPLACE CORR    -         -2.62  (seconds)                    DEFLEC18
 DO7232  DYNAMIC HEIGHT  -          4.675 (meters)       15.34  (feet) COMP
 DO7232  MODELED GRAVITY -    980,081.0   (mgal)                       NAVD 88
 DO7232
 DO7232  VERT ORDER      -  SECOND    CLASS I
 DO7232
 DO7232  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DO7232  Standards:
 DO7232         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DO7232            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DO7232  -------------------------------------------------------------------
 DO7232  NETWORK    0.74   1.69           0.33   0.27   0.86     -0.14871896
 DO7232  -------------------------------------------------------------------
 DO7232  Click here for local accuracies and other accuracy information.
 DO7232
 DO7232.The horizontal coordinates were established by GPS observations
 DO7232.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DO7232
 DO7232.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DO7232.been affixed to the stable North American tectonic plate. See 
 DO7232.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DO7232
 DO7232.The horizontal coordinates are valid at the epoch date displayed above
 DO7232.which is a decimal equivalence of Year/Month/Day.
 DO7232
 DO7232.The orthometric height was determined by differential leveling and
 DO7232.adjusted by the NATIONAL GEODETIC SURVEY
 DO7232.in May 2013.
 DO7232
 DO7232.Significant digits in the geoid height do not necessarily reflect accuracy.
 DO7232.GEOID18 height accuracy estimate available here.
 DO7232
 DO7232.Click photographs - Photos may exist for this station.
 DO7232
 DO7232.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DO7232
 DO7232.The Laplace correction was computed from DEFLEC18 derived deflections.
 DO7232
 DO7232.The ellipsoidal height was determined by GPS observations
 DO7232.and is referenced to NAD 83.
 DO7232
 DO7232.The dynamic height is computed by dividing the NAVD 88
 DO7232.geopotential number by the normal gravity value computed on the
 DO7232.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DO7232.degrees latitude (g = 980.6199 gals.).
 DO7232
 DO7232.The modeled gravity was interpolated from observed gravity values.
 DO7232
 DO7232. The following values were computed from the NAD 83(2011) position.
 DO7232
 DO7232;                    North         East     Units Scale Factor Converg.
 DO7232;SPC MD       -   145,664.270   458,541.612   MT  0.99995140   +0 25 26.5
 DO7232;SPC MD       -   477,900.19  1,504,398.61   sFT  0.99995140   +0 25 26.5
 DO7232;UTM  18      - 4,315,052.982   385,279.739   MT  0.99976205   -0 49 59.3
 DO7232
 DO7232!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DO7232!SPC MD       -   1.00000453  x   0.99995140  =   0.99995593
 DO7232!UTM  18      -   1.00000453  x   0.99976205  =   0.99976658
 DO7232
 DO7232_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8527915052(NAD 83)
 DO7232
 DO7232                          SUPERSEDED SURVEY CONTROL
 DO7232
 DO7232.No superseded survey control is available for this station.
 DO7232
 DO7232_MARKER: DD = SURVEY DISK
 DO7232_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DO7232_STAMPING: 124
 DO7232_MARK LOGO: MD-035
 DO7232_PROJECTION: RECESSED 3 CENTIMETERS
 DO7232_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DO7232+STABILITY: SURFACE MOTION
 DO7232_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DO7232+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2021
 DO7232
 DO7232  HISTORY     - Date     Condition        Report By
 DO7232  HISTORY     - 20130311 MONUMENTED       ARCSHE
 DO7232  HISTORY     - 20210315 GOOD             MDSHA
 DO7232
 DO7232                          STATION DESCRIPTION
 DO7232
 DO7232'DESCRIBED BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 DO7232'THE STATION IS LOCATED ABOUT 14.6 MI (23.5 KM) WEST-SOUTHWEST OF
 DO7232'CENTREVILLE, 1.9 MI (3.1 KM) WEST OF CHESTER, 1.8 MI (2.9 KM)
 DO7232'SOUTHWEST OF CLOVERFIELDS AND IN THE TOWN OF STEVENSVILLE, MD.
 DO7232'OWNERSHIP--ROAD RIGHT-OF-WAY.
 DO7232'
 DO7232'TO REACH FROM THE US 50/MD 8 INTERCHANGE IN STEVENSVILLE, GO SOUTHWEST
 DO7232'ON MD ROUTE 8 FOR 0.17 MI (0.3 KM) TO A CROSSROADS.  TURN RIGHT AND GO
 DO7232'NORTHWEST ON PIER 1 ROAD FOR 0.10 MI (0.2 KM) TO THE MARK ON THE LEFT.
 DO7232'
 DO7232'IT IS 162.5 FT (49.5 M) WEST-NORTHWEST OF TELEPHONE PEDESTAL NUMBER 1,
 DO7232'148.8 FT (45.4 M) EAST-SOUTHEAST OF THE NORTHEAST CORNER OF A CHAIN
 DO7232'LINK FENCE AROUND THE AIRPORT, 37.5 FT (11.4 M) SOUTH-SOUTHWEST OF THE
 DO7232'CENTERLINE OF THE PIER 1 ROAD, 36.8 FT (11.2 M) NORTH-NORTHEAST OF A
 DO7232'FIBERGLASS WITNESS POST, 30.5 FT (9.3 M) WEST-NORTHWEST OF A
 DO7232'CONSTRUCTION ENTRANCE TO THE AIRPORT AND SET IN THE TOP OF A 8-IN
 DO7232'(20 CM) ROUND CONCRETE POST ABOUT LEVEL WITH THE ROAD.
 DO7232
 DO7232                          STATION RECOVERY (2021)
 DO7232
 DO7232'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DO7232'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1318 ***********************************************************************
 HV1318  DESIGNATION -  1241 WSSC
 HV1318  PID         -  HV1318
 HV1318  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1318  COUNTRY     -  US
 HV1318  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1318
 HV1318                         *CURRENT SURVEY CONTROL
 HV1318  ______________________________________________________________________
 HV1318* NAD 83(1986) POSITION- 38 53 07.     (N) 076 55 07.     (W)   SCALED
 HV1318* NAVD 88 ORTHO HEIGHT -    45.69  (+/-2cm)      149.9   (feet) VERTCON3
 HV1318  ______________________________________________________________________
 HV1318  GEOID HEIGHT    -        -32.317 (meters)                     GEOID18
 HV1318  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1318
 HV1318.The horizontal coordinates were scaled from a map and have
 HV1318.an estimated accuracy of +/- 6 seconds.
 HV1318
 HV1318.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1318.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1318
 HV1318.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1318.GEOID18 height accuracy estimate available here.
 HV1318
 HV1318.The vertical order pertains to the NGVD 29 superseded value.
 HV1318
 HV1318.Click photographs - Photos may exist for this station.
 HV1318
 HV1318;                    North         East    Units  Estimated Accuracy
 HV1318;SPC MD       -   135,270.      407,060.      MT  (+/- 180 meters Scaled)
 HV1318
 HV1318_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ335057(NAD 83)
 HV1318
 HV1318                          SUPERSEDED SURVEY CONTROL
 HV1318
 HV1318  NGVD 29 (11/26/84)   45.928  (m)          150.68   (f) ADJUSTED    2 0
 HV1318
 HV1318.Superseded values are not recommended for survey control.
 HV1318
 HV1318.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1318.See file dsdata.pdf to determine how the superseded data were derived.
 HV1318
 HV1318_MARKER: Z = SEE DESCRIPTION
 HV1318_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1318_SP_SET: BOUNDARY STONE
 HV1318_STAMPING: WSSC 1241
 HV1318_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1318
 HV1318  HISTORY     - Date     Condition        Report By
 HV1318  HISTORY     - 1944     MONUMENTED       WSSC
 HV1318
 HV1318                          STATION DESCRIPTION
 HV1318
 HV1318'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1318'AT CAPTIOL HEIGHTS.
 HV1318'AT THE MARYLAND-DISTRICT OF COLUMBIA LINE, AT THE INTERSECTION OF
 HV1318'CENTRAL AVENUE AND SOUTHERN AVENUE, ON THE NORTH SIDE OF CENTRAL
 HV1318'AVENUE, AND IN THE TOP OF A BOUNDARY STONE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DO7231 ***********************************************************************
 DO7231  DESIGNATION -  125
 DO7231  PID         -  DO7231
 DO7231  STATE/COUNTY-  MD/QUEEN ANNES
 DO7231  COUNTRY     -  US
 DO7231  USGS QUAD   -  KENT ISLAND (2016)
 DO7231
 DO7231                         *CURRENT SURVEY CONTROL
 DO7231  ______________________________________________________________________
 DO7231* NAD 83(2011) POSITION- 38 58 41.54585(N) 076 19 44.13966(W)   ADJUSTED
 DO7231* NAD 83(2011) ELLIP HT-   -28.973 (meters)        (02/02/22)   ADJUSTED
 DO7231* NAD 83(2011) EPOCH   -  2010.00
 DO7231* NAVD 88 ORTHO HEIGHT -     4.588 (meters)       15.05  (feet) ADJUSTED
 DO7231  ______________________________________________________________________
 DO7231  GEOID HEIGHT    -        -33.574 (meters)                     GEOID18
 DO7231  NAD 83(2011) X  -  1,173,424.930 (meters)                     COMP
 DO7231  NAD 83(2011) Y  - -4,824,166.356 (meters)                     COMP
 DO7231  NAD 83(2011) Z  -  3,990,418.331 (meters)                     COMP
 DO7231  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 DO7231  DYNAMIC HEIGHT  -          4.585 (meters)       15.04  (feet) COMP
 DO7231  MODELED GRAVITY -    980,081.2   (mgal)                       NAVD 88
 DO7231
 DO7231  VERT ORDER      -  SECOND    CLASS I
 DO7231
 DO7231  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DO7231  Standards:
 DO7231         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DO7231            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DO7231  -------------------------------------------------------------------
 DO7231  NETWORK    0.74   1.69           0.33   0.27   0.86     -0.13586374
 DO7231  -------------------------------------------------------------------
 DO7231  Click here for local accuracies and other accuracy information.
 DO7231
 DO7231.The horizontal coordinates were established by GPS observations
 DO7231.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DO7231
 DO7231.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DO7231.been affixed to the stable North American tectonic plate. See 
 DO7231.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DO7231
 DO7231.The horizontal coordinates are valid at the epoch date displayed above
 DO7231.which is a decimal equivalence of Year/Month/Day.
 DO7231
 DO7231.The orthometric height was determined by differential leveling and
 DO7231.adjusted by the NATIONAL GEODETIC SURVEY
 DO7231.in May 2013.
 DO7231
 DO7231.Significant digits in the geoid height do not necessarily reflect accuracy.
 DO7231.GEOID18 height accuracy estimate available here.
 DO7231
 DO7231.Click photographs - Photos may exist for this station.
 DO7231
 DO7231.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DO7231
 DO7231.The Laplace correction was computed from DEFLEC18 derived deflections.
 DO7231
 DO7231.The ellipsoidal height was determined by GPS observations
 DO7231.and is referenced to NAD 83.
 DO7231
 DO7231.The dynamic height is computed by dividing the NAVD 88
 DO7231.geopotential number by the normal gravity value computed on the
 DO7231.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DO7231.degrees latitude (g = 980.6199 gals.).
 DO7231
 DO7231.The modeled gravity was interpolated from observed gravity values.
 DO7231
 DO7231. The following values were computed from the NAD 83(2011) position.
 DO7231
 DO7231;                    North         East     Units Scale Factor Converg.
 DO7231;SPC MD       -   145,800.713   458,147.062   MT  0.99995144   +0 25 16.3
 DO7231;SPC MD       -   478,347.84  1,503,104.15   sFT  0.99995144   +0 25 16.3
 DO7231;UTM  18      - 4,315,198.021   384,888.352   MT  0.99976316   -0 50 09.7
 DO7231
 DO7231!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DO7231!SPC MD       -   1.00000455  x   0.99995144  =   0.99995599
 DO7231!UTM  18      -   1.00000455  x   0.99976316  =   0.99976770
 DO7231
 DO7231_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8488815198(NAD 83)
 DO7231
 DO7231                          SUPERSEDED SURVEY CONTROL
 DO7231
 DO7231.No superseded survey control is available for this station.
 DO7231
 DO7231_MARKER: DD = SURVEY DISK
 DO7231_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DO7231_STAMPING: 125
 DO7231_MARK LOGO: MD-035
 DO7231_PROJECTION: RECESSED 5 CENTIMETERS
 DO7231_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DO7231+STABILITY: SURFACE MOTION
 DO7231_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DO7231+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2021
 DO7231
 DO7231  HISTORY     - Date     Condition        Report By
 DO7231  HISTORY     - 2013     MONUMENTED       MD-035
 DO7231  HISTORY     - 20130311 GOOD             ARCSHE
 DO7231  HISTORY     - 20210315 GOOD             MDSHA
 DO7231
 DO7231                          STATION DESCRIPTION
 DO7231
 DO7231'DESCRIBED BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 DO7231'THE STATION IS LOCATED ABOUT 14.8 MI (23.8 KM) WEST-SOUTHWEST OF
 DO7231'CENTREVILLE, 2.1 MI (3.4 KM) WEST OF CHESTER, 1.9 MI (3.1 KM)
 DO7231'SOUTHWEST OF CLOVERFIELDS AND 0.8 MI (1.3 KM) WEST-SOUTHWEST OF
 DO7231'STEVENSVILLE.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DO7231'
 DO7231'TO REACH FROM THE US 50/MD 8 INTERCHANGE IN STEVENSVILLE, GO SOUTHWEST
 DO7231'ON MD ROUTE 8 FOR 0.17 MI (0.3 KM) TO A CROSSROADS.  TURN RIGHT AND GO
 DO7231'NORTHWEST ON PIER 1 ROAD FOR 0.36 MI (0.6 KM) TO THE MARK ON THE LEFT.
 DO7231'
 DO7231'IT IS 96.8 FT (29.5 M) NORTHWEST OF THE CENTERLINE OF THE ENTRANCE TO
 DO7231'THE PARKING LOT OF THE MARINA SERVICE DEPARTMENT, 93.2 FT (28.4 M)
 DO7231'WEST OF LIGHT POLE 26269-15663, 64.7 FT (19.7 M) WEST-NORTHWEST OF
 DO7231'POWER TRANSFORMER DPL 26265-15657, 22.4 FT (6.8 M) SOUTHWEST OF THE
 DO7231'CENTERLINE OF THE PIER 1 ROAD, 14.6 FT (4.5 M) NORTHEAST OF OF A
 DO7231'FIBERGLASS WITNESS POST AND SET IN THE TOP OF A 8-IN (20 CM) ROUND
 DO7231'CONCRETE POST ABOUT LEVEL WITH THE ROAD.
 DO7231
 DO7231                          STATION RECOVERY (2021)
 DO7231
 DO7231'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DO7231'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1261 ***********************************************************************
 HV1261  DESIGNATION -  1253 WSSC
 HV1261  PID         -  HV1261
 HV1261  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1261  COUNTRY     -  US
 HV1261  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1261
 HV1261                         *CURRENT SURVEY CONTROL
 HV1261  ______________________________________________________________________
 HV1261* NAD 83(1986) POSITION- 38 57 06.     (N) 076 56 30.     (W)   SCALED
 HV1261* NAVD 88 ORTHO HEIGHT -    15.370 (meters)       50.43  (feet) ADJUSTED
 HV1261  ______________________________________________________________________
 HV1261  GEOID HEIGHT    -        -32.162 (meters)                     GEOID18
 HV1261  DYNAMIC HEIGHT  -         15.362 (meters)       50.40  (feet) COMP
 HV1261  MODELED GRAVITY -    980,103.7   (mgal)                       NAVD 88
 HV1261
 HV1261  VERT ORDER      -  FIRST     CLASS I
 HV1261
 HV1261.The horizontal coordinates were scaled from a map and have
 HV1261.an estimated accuracy of +/- 6 seconds.
 HV1261
 HV1261.The orthometric height was determined by differential leveling and
 HV1261.adjusted by the NATIONAL GEODETIC SURVEY
 HV1261.in June 1991.
 HV1261
 HV1261.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1261.GEOID18 height accuracy estimate available here.
 HV1261
 HV1261.Click photographs - Photos may exist for this station.
 HV1261
 HV1261.The dynamic height is computed by dividing the NAVD 88
 HV1261.geopotential number by the normal gravity value computed on the
 HV1261.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1261.degrees latitude (g = 980.6199 gals.).
 HV1261
 HV1261.The modeled gravity was interpolated from observed gravity values.
 HV1261
 HV1261;                    North         East    Units  Estimated Accuracy
 HV1261;SPC MD       -   142,640.      405,060.      MT  (+/- 180 meters Scaled)
 HV1261
 HV1261_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ317132(NAD 83)
 HV1261
 HV1261                          SUPERSEDED SURVEY CONTROL
 HV1261
 HV1261  NGVD 29 (11/26/84)   15.603  (m)           51.19   (f) ADJUSTED    1 1
 HV1261
 HV1261.Superseded values are not recommended for survey control.
 HV1261
 HV1261.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1261.See file dsdata.pdf to determine how the superseded data were derived.
 HV1261
 HV1261_MARKER: Z = SEE DESCRIPTION
 HV1261_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1261_SP_SET: BUILDING
 HV1261_STAMPING: 1253 WSSC
 HV1261_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1261
 HV1261  HISTORY     - Date     Condition        Report By
 HV1261  HISTORY     - UNK      MONUMENTED       WSSC
 HV1261  HISTORY     - 1971     GOOD             NGS
 HV1261
 HV1261                          STATION DESCRIPTION
 HV1261
 HV1261'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1261'AT HYATTSVILLE.
 HV1261'AT HYATTSVILLE, ABOUT 0.05 MILE SOUTHWEST ALONG U.S. HIGHWAY
 HV1261'1 FROM THE JUNCTION OF ALTERNATE U.S. HIGHWAY 1, THENCE 129
 HV1261'FEET WEST ALONG FARRAGUT STREET, AT THE HYATTSVILLE RECREATION
 HV1261'CENTER, (FORMERLY THE FIRE DEPARTMENT), SET VERTICALLY ON THE
 HV1261'EAST WALL AND 2 FEET NORTH OF THE SOUTHEAST CORNER OF THE BUILDING,
 HV1261'33 FEET NORTH OF THE CENTER LINE OF THE STREET, AND ABOUT 2
 HV1261'FEET ABOVE THE LEVEL OF THE STREET. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0527 ***********************************************************************
 JV0527  DESIGNATION -  126
 JV0527  PID         -  JV0527
 JV0527  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0527  COUNTRY     -  US
 JV0527  USGS QUAD   -  GIBSON ISLAND (2017)
 JV0527
 JV0527                         *CURRENT SURVEY CONTROL
 JV0527  ______________________________________________________________________
 JV0527* NAD 83(1986) POSITION- 39 01 14.9    (N) 076 24 54.9    (W)   HD_HELD2
 JV0527* NAVD 88 ORTHO HEIGHT -     6.052 (meters)       19.86  (feet) ADJUSTED
 JV0527  ______________________________________________________________________
 JV0527  GEOID HEIGHT    -        -33.397 (meters)                     GEOID18
 JV0527  DYNAMIC HEIGHT  -          6.049 (meters)       19.85  (feet) COMP
 JV0527  MODELED GRAVITY -    980,077.8   (mgal)                       NAVD 88
 JV0527
 JV0527  VERT ORDER      -  FIRST     CLASS II
 JV0527
 JV0527.The horizontal coordinates were established by autonomous hand held GPS
 JV0527.observations and have an estimated accuracy of +/- 10 meters.
 JV0527
 JV0527.The orthometric height was determined by differential leveling and
 JV0527.adjusted by the NATIONAL GEODETIC SURVEY
 JV0527.in June 1991.
 JV0527
 JV0527.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0527.GEOID18 height accuracy estimate available here.
 JV0527
 JV0527.Click photographs - Photos may exist for this station.
 JV0527
 JV0527.The dynamic height is computed by dividing the NAVD 88
 JV0527.geopotential number by the normal gravity value computed on the
 JV0527.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0527.degrees latitude (g = 980.6199 gals.).
 JV0527
 JV0527.The modeled gravity was interpolated from observed gravity values.
 JV0527
 JV0527;                    North         East    Units  Estimated Accuracy
 JV0527;SPC MD       -   150,478.      450,637.      MT  (+/- 10 meters HH2 GPS)
 JV0527
 JV0527_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7748420038(NAD 83)
 JV0527
 JV0527                          SUPERSEDED SURVEY CONTROL
 JV0527
 JV0527  NGVD 29 (11/26/84)    6.295  (m)           20.65   (f) ADJUSTED    1 2
 JV0527
 JV0527.Superseded values are not recommended for survey control.
 JV0527
 JV0527.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0527.See file dsdata.pdf to determine how the superseded data were derived.
 JV0527
 JV0527_MARKER: DD = SURVEY DISK
 JV0527_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0527_STAMPING: SPSP 126
 JV0527_MARK LOGO: CGS+SS
 JV0527_PROJECTION: PROJECTING
 JV0527_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0527_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0527+STABILITY: SURFACE MOTION
 JV0527_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0527+SATELLITE: SATELLITE OBSERVATIONS - January 08, 2009
 JV0527
 JV0527  HISTORY     - Date     Condition        Report By
 JV0527  HISTORY     - 1934     MONUMENTED       MDGS
 JV0527  HISTORY     - 1971     GOOD             NGS
 JV0527  HISTORY     - 19911210 GOOD             MDSHA
 JV0527  HISTORY     - 20011111 GOOD             USPSQD
 JV0527  HISTORY     - 20031111 GOOD             URS
 JV0527  HISTORY     - 20051215 GOOD             USPSQD
 JV0527  HISTORY     - 20081117 GOOD             MDSHA
 JV0527  HISTORY     - 20090108 GOOD             USACE
 JV0527  HISTORY     - 20161123 GOOD             INDIV
 JV0527
 JV0527                          STATION DESCRIPTION
 JV0527
 JV0527'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0527'2.6 MI E FROM ST MARGARETS.
 JV0527'ABOUT 1.0 MILE NORTHEAST ALONG STATE HIGHWAY 179 FROM THE ST
 JV0527'MARGARETS EPISCOPAL CHURCH AND CEMETERY AT ST MARGARETS, THENCE
 JV0527'1.65 MILES EAST ALONG U.S. HIGHWAY 301 AND 50, AT THE JUNCTION
 JV0527'OF LOG INN ROAD LEADING NORTH, 198 FEET NORTH OF THE CENTER
 JV0527'LINE OF THE WESTBOUND LANE OF THE HIGHWAYS, 16 FEET EAST OF THE CENTER
 JV0527'LINE OF LOG INN ROAD, 84 1/2 FEET EAST OF AND ACROSS THE ROAD FROM
 JV0527'THE EAST CORNER OF A SHELL SERVICE STATION, 7 FEET NORTH OF A
 JV0527'36-INCH FORKED WILD CHERRY TREE, 3 1/2 FEET SOUTHWEST OF A POWER
 JV0527'LINE POLE, 1 1/2 FEET NORTH OF A 2 FOOT HIGH CREOSOTED POST,
 JV0527'3 1/2 FEET SOUTH OF A 2 FOOT HIGH CRESOTED POST, ABOUT LEVEL
 JV0527'WITH THE ROAD AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 JV0527'4 INCHES ABOVE THE LEVEL OF THE GROUND.
 JV0527
 JV0527                          STATION RECOVERY (1991)
 JV0527
 JV0527'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV0527'RECOVERED IN GOOD CONDITION.
 JV0527
 JV0527                          STATION RECOVERY (2001)
 JV0527
 JV0527'RECOVERY NOTE BY US POWER SQUADRON 2001 (HCS)
 JV0527'SHELL SERVICE STATION NO LONGER EXISTS, CHERRY TREE NO LONGER EXISTS.
 JV0527'MARK IS 2 FEET SOUTHWEST OF POWER LINE POLE, BGE 305828, AND 35 FEET
 JV0527'EAST OF POWER POLE, BGE 292034 LOCATED ON THE OTHER SIDE OF LOG INN
 JV0527'ROAD
 JV0527
 JV0527                          STATION RECOVERY (2003)
 JV0527
 JV0527'RECOVERY NOTE BY URS COMPANY 2003 (EN)
 JV0527'RECOVERED IN GOOD CONDITION.
 JV0527
 JV0527                          STATION RECOVERY (2005)
 JV0527
 JV0527'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV0527'RECOVERED IN GOOD CONDITION.
 JV0527
 JV0527                          STATION RECOVERY (2008)
 JV0527
 JV0527'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 JV0527'RECOVERED IN GOOD CONDITION.
 JV0527
 JV0527                          STATION RECOVERY (2009)
 JV0527
 JV0527'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2009 (MAD)
 JV0527'RECOVERED AS DESCRIBED
 JV0527
 JV0527                          STATION RECOVERY (2016)
 JV0527
 JV0527'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2016 (TG)
 JV0527'RECOVERY NOTE BY ANNE ARUNDEL COUNTY GOVERNMENT DPW-SURVEY SECTION
 JV0527'2017 (TG). RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0747 ***********************************************************************
 JV0747  DESIGNATION -  126 BORR
 JV0747  PID         -  JV0747
 JV0747  STATE/COUNTY-  MD/CARROLL
 JV0747  COUNTRY     -  US
 JV0747  USGS QUAD   -  SYKESVILLE (2016)
 JV0747
 JV0747                         *CURRENT SURVEY CONTROL
 JV0747  ______________________________________________________________________
 JV0747* NAD 83(1986) POSITION- 39 21 42.     (N) 076 59 12.     (W)   SCALED
 JV0747* NAVD 88 ORTHO HEIGHT -   125.950 (meters)      413.22  (feet) ADJUSTED
 JV0747  ______________________________________________________________________
 JV0747  GEOID HEIGHT    -        -31.925 (meters)                     GEOID18
 JV0747  DYNAMIC HEIGHT  -        125.885 (meters)      413.01  (feet) COMP
 JV0747  MODELED GRAVITY -    980,106.2   (mgal)                       NAVD 88
 JV0747
 JV0747  VERT ORDER      -  FIRST     CLASS II
 JV0747
 JV0747.The horizontal coordinates were scaled from a map and have
 JV0747.an estimated accuracy of +/- 6 seconds.
 JV0747
 JV0747.The orthometric height was determined by differential leveling and
 JV0747.adjusted by the NATIONAL GEODETIC SURVEY
 JV0747.in June 1991.
 JV0747
 JV0747.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0747.GEOID18 height accuracy estimate available here.
 JV0747
 JV0747.Click photographs - Photos may exist for this station.
 JV0747
 JV0747.The dynamic height is computed by dividing the NAVD 88
 JV0747.geopotential number by the normal gravity value computed on the
 JV0747.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0747.degrees latitude (g = 980.6199 gals.).
 JV0747
 JV0747.The modeled gravity was interpolated from observed gravity values.
 JV0747
 JV0747;                    North         East    Units  Estimated Accuracy
 JV0747;SPC MD       -   188,160.      401,150.      MT  (+/- 180 meters Scaled)
 JV0747
 JV0747_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ288587(NAD 83)
 JV0747
 JV0747                          SUPERSEDED SURVEY CONTROL
 JV0747
 JV0747  NGVD 29 (11/26/84)  126.161  (m)          413.91   (f) ADJUSTED    1 2
 JV0747
 JV0747.Superseded values are not recommended for survey control.
 JV0747
 JV0747.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0747.See file dsdata.pdf to determine how the superseded data were derived.
 JV0747
 JV0747_MARKER: B = BOLT
 JV0747_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0747_SP_SET: BRIDGE
 JV0747_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0747
 JV0747  HISTORY     - Date     Condition        Report By
 JV0747  HISTORY     - 1903     MONUMENTED       BORR
 JV0747  HISTORY     - 1941     GOOD             CGS
 JV0747
 JV0747                          STATION DESCRIPTION
 JV0747
 JV0747'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0747'0.9 MI W FROM SYKESVILLE.
 JV0747'ABOUT 0.9 MILE WEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0747'FROM THE STATION AT SKYESVILLE, CARROLL COUNTY, ABOUT 11 RAILS
 JV0747'WEST OF THE WEST END OF THE SYKESVILLE TUNNEL, AT BRIDGE 27 B,
 JV0747'IN THE CENTER OF THE TOP OF THE WEST ABUTMENT, AND 4.1 FEET SOUTH
 JV0747'OF THE SOUTH RAIL OF THE WESTBOUND TRACK.  AN IRON BOLT.
 JV0747'NOTE-- SINCE THE 1903 DESCRIPTION CALLS FOR A COPPER BOLT AT
 JV0747'THIS LOCATION, IT IS DOUBTFUL IF THIS IS THE SAME BENCH MARK AS
 JV0747'THE ONE USED IN 1903.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1212 ***********************************************************************
 JV1212  DESIGNATION -  1265 C OF B
 JV1212  PID         -  JV1212
 JV1212  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1212  COUNTRY     -  US
 JV1212  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1212
 JV1212                         *CURRENT SURVEY CONTROL
 JV1212  ______________________________________________________________________
 JV1212* NAD 83(1986) POSITION- 39 19 37.     (N) 076 37 46.     (W)   SCALED
 JV1212* NAVD 88 ORTHO HEIGHT -    66.388 (meters)      217.81  (feet) ADJUSTED
 JV1212  ______________________________________________________________________
 JV1212  GEOID HEIGHT    -        -32.608 (meters)                     GEOID18
 JV1212  DYNAMIC HEIGHT  -         66.353 (meters)      217.69  (feet) COMP
 JV1212  MODELED GRAVITY -    980,103.0   (mgal)                       NAVD 88
 JV1212
 JV1212  VERT ORDER      -  SECOND    CLASS 0
 JV1212
 JV1212.The horizontal coordinates were scaled from a map and have
 JV1212.an estimated accuracy of +/- 6 seconds.
 JV1212
 JV1212.The orthometric height was determined by differential leveling and
 JV1212.adjusted by the NATIONAL GEODETIC SURVEY
 JV1212.in June 1991.
 JV1212
 JV1212.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1212.GEOID18 height accuracy estimate available here.
 JV1212
 JV1212.Click photographs - Photos may exist for this station.
 JV1212
 JV1212.The dynamic height is computed by dividing the NAVD 88
 JV1212.geopotential number by the normal gravity value computed on the
 JV1212.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1212.degrees latitude (g = 980.6199 gals.).
 JV1212
 JV1212.The modeled gravity was interpolated from observed gravity values.
 JV1212
 JV1212;                    North         East    Units  Estimated Accuracy
 JV1212;SPC MD       -   184,370.      431,950.      MT  (+/- 180 meters Scaled)
 JV1212
 JV1212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ595543(NAD 83)
 JV1212
 JV1212                          SUPERSEDED SURVEY CONTROL
 JV1212
 JV1212  NGVD 29 (11/26/84)   66.621  (m)          218.57   (f) ADJUSTED    2 0
 JV1212
 JV1212.Superseded values are not recommended for survey control.
 JV1212
 JV1212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1212.See file dsdata.pdf to determine how the superseded data were derived.
 JV1212
 JV1212_MARKER: B = BOLT
 JV1212_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1212_SP_SET: DOOR STEP
 JV1212_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1212
 JV1212  HISTORY     - Date     Condition        Report By
 JV1212  HISTORY     - UNK      MONUMENTED       MD0050
 JV1212  HISTORY     - 1935     GOOD             CGS
 JV1212
 JV1212                          STATION DESCRIPTION
 JV1212
 JV1212'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1212'AT BALTIMORE.
 JV1212'AT BALTIMORE, AT HAMPDEN, AT THE SOUTHWEST CORNER OF THE
 JV1212'INTERSECTION OF THIRTY-THIRD STREET AND CHESTNUT AVENUE, AT A
 JV1212'CHURCH, IN THE TOP OF A DOORSTEP, 0.9 FOOT FROM THE EAST END, AND
 JV1212'0.5 FOOT FROM THE FRONT EDGE.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1219 ***********************************************************************
 JV1219  DESIGNATION -  1269 C OF B
 JV1219  PID         -  JV1219
 JV1219  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1219  COUNTRY     -  US
 JV1219  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1219
 JV1219                         *CURRENT SURVEY CONTROL
 JV1219  ______________________________________________________________________
 JV1219* NAD 83(1986) POSITION- 39 18 47.     (N) 076 37 07.     (W)   SCALED
 JV1219* NAVD 88 ORTHO HEIGHT -    33.322 (meters)      109.32  (feet) ADJUSTED
 JV1219  ______________________________________________________________________
 JV1219  GEOID HEIGHT    -        -32.666 (meters)                     GEOID18
 JV1219  DYNAMIC HEIGHT  -         33.305 (meters)      109.27  (feet) COMP
 JV1219  MODELED GRAVITY -    980,103.8   (mgal)                       NAVD 88
 JV1219
 JV1219  VERT ORDER      -  SECOND    CLASS 0
 JV1219
 JV1219.The horizontal coordinates were scaled from a map and have
 JV1219.an estimated accuracy of +/- 6 seconds.
 JV1219
 JV1219.The orthometric height was determined by differential leveling and
 JV1219.adjusted by the NATIONAL GEODETIC SURVEY
 JV1219.in June 1991.
 JV1219
 JV1219.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1219.GEOID18 height accuracy estimate available here.
 JV1219
 JV1219.Click photographs - Photos may exist for this station.
 JV1219
 JV1219.The dynamic height is computed by dividing the NAVD 88
 JV1219.geopotential number by the normal gravity value computed on the
 JV1219.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1219.degrees latitude (g = 980.6199 gals.).
 JV1219
 JV1219.The modeled gravity was interpolated from observed gravity values.
 JV1219
 JV1219;                    North         East    Units  Estimated Accuracy
 JV1219;SPC MD       -   182,830.      432,890.      MT  (+/- 180 meters Scaled)
 JV1219
 JV1219_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ604527(NAD 83)
 JV1219
 JV1219                          SUPERSEDED SURVEY CONTROL
 JV1219
 JV1219  NGVD 29 (11/26/84)   33.556  (m)          110.09   (f) ADJUSTED    2 0
 JV1219
 JV1219.Superseded values are not recommended for survey control.
 JV1219
 JV1219.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1219.See file dsdata.pdf to determine how the superseded data were derived.
 JV1219
 JV1219_MARKER: B = BOLT
 JV1219_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1219_SP_SET: DOORSILL
 JV1219_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1219
 JV1219  HISTORY     - Date     Condition        Report By
 JV1219  HISTORY     - UNK      MONUMENTED       MD0050
 JV1219  HISTORY     - 1935     GOOD             CGS
 JV1219
 JV1219                          STATION DESCRIPTION
 JV1219
 JV1219'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1219'AT BALTIMORE.
 JV1219'AT BALTIMORE, BETWEEN HUDSON ALLEY AND MARYLAND AVENUE, ON THE
 JV1219'SOUTH SIDE OF TWENTY-FIRCT STREET, AT ENGINE HOUSE 18, AND IN
 JV1219'THE TOP OF THE EAST END OF THE EAST DOORSILL.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1221 ***********************************************************************
 JV1221  DESIGNATION -  1272 C OF B
 JV1221  PID         -  JV1221
 JV1221  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1221  COUNTRY     -  US
 JV1221  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1221
 JV1221                         *CURRENT SURVEY CONTROL
 JV1221  ______________________________________________________________________
 JV1221* NAD 83(1986) POSITION- 39 18 31.     (N) 076 37 04.     (W)   SCALED
 JV1221* NAVD 88 ORTHO HEIGHT -    26.541 (meters)       87.08  (feet) ADJUSTED
 JV1221  ______________________________________________________________________
 JV1221  GEOID HEIGHT    -        -32.676 (meters)                     GEOID18
 JV1221  DYNAMIC HEIGHT  -         26.527 (meters)       87.03  (feet) COMP
 JV1221  MODELED GRAVITY -    980,104.2   (mgal)                       NAVD 88
 JV1221
 JV1221  VERT ORDER      -  SECOND    CLASS 0
 JV1221
 JV1221.The horizontal coordinates were scaled from a map and have
 JV1221.an estimated accuracy of +/- 6 seconds.
 JV1221
 JV1221.The orthometric height was determined by differential leveling and
 JV1221.adjusted by the NATIONAL GEODETIC SURVEY
 JV1221.in June 1991.
 JV1221
 JV1221.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1221.GEOID18 height accuracy estimate available here.
 JV1221
 JV1221.Click photographs - Photos may exist for this station.
 JV1221
 JV1221.The dynamic height is computed by dividing the NAVD 88
 JV1221.geopotential number by the normal gravity value computed on the
 JV1221.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1221.degrees latitude (g = 980.6199 gals.).
 JV1221
 JV1221.The modeled gravity was interpolated from observed gravity values.
 JV1221
 JV1221;                    North         East    Units  Estimated Accuracy
 JV1221;SPC MD       -   182,340.      432,970.      MT  (+/- 180 meters Scaled)
 JV1221
 JV1221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ605522(NAD 83)
 JV1221
 JV1221                          SUPERSEDED SURVEY CONTROL
 JV1221
 JV1221  NGVD 29 (11/26/84)   26.775  (m)           87.84   (f) ADJUSTED    2 0
 JV1221
 JV1221.Superseded values are not recommended for survey control.
 JV1221
 JV1221.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1221.See file dsdata.pdf to determine how the superseded data were derived.
 JV1221
 JV1221_MARKER: B = BOLT
 JV1221_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1221_SP_SET: COPING
 JV1221_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1221
 JV1221  HISTORY     - Date     Condition        Report By
 JV1221  HISTORY     - UNK      MONUMENTED       MD0050
 JV1221  HISTORY     - 1935     GOOD             CGS
 JV1221
 JV1221                          STATION DESCRIPTION
 JV1221
 JV1221'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1221'AT BALTIMORE.
 JV1221'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, AT THE NORTHWEST
 JV1221'CORNER OF THE MARYLAND AVENUE OVERPASS, IN THE TOP OF THE
 JV1221'COPING, 6.2 FEET FROM A WALL CORNER TURNING TOWARD FALLS ROAD,
 JV1221'AND 3 FEET NORTH OF THE SOUTH END OF STONE.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1222 ***********************************************************************
 JV1222  DESIGNATION -  1277 C OF B
 JV1222  PID         -  JV1222
 JV1222  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1222  COUNTRY     -  US
 JV1222  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1222
 JV1222                         *CURRENT SURVEY CONTROL
 JV1222  ______________________________________________________________________
 JV1222* NAD 83(1986) POSITION- 39 18 16.     (N) 076 37 07.     (W)   SCALED
 JV1222* NAVD 88 ORTHO HEIGHT -    27.238 (meters)       89.36  (feet) ADJUSTED
 JV1222  ______________________________________________________________________
 JV1222  GEOID HEIGHT    -        -32.681 (meters)                     GEOID18
 JV1222  DYNAMIC HEIGHT  -         27.224 (meters)       89.32  (feet) COMP
 JV1222  MODELED GRAVITY -    980,104.4   (mgal)                       NAVD 88
 JV1222
 JV1222  VERT ORDER      -  SECOND    CLASS 0
 JV1222
 JV1222.The horizontal coordinates were scaled from a map and have
 JV1222.an estimated accuracy of +/- 6 seconds.
 JV1222
 JV1222.The orthometric height was determined by differential leveling and
 JV1222.adjusted by the NATIONAL GEODETIC SURVEY
 JV1222.in June 1991.
 JV1222
 JV1222.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1222.GEOID18 height accuracy estimate available here.
 JV1222
 JV1222.Click photographs - Photos may exist for this station.
 JV1222
 JV1222.The dynamic height is computed by dividing the NAVD 88
 JV1222.geopotential number by the normal gravity value computed on the
 JV1222.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1222.degrees latitude (g = 980.6199 gals.).
 JV1222
 JV1222.The modeled gravity was interpolated from observed gravity values.
 JV1222
 JV1222;                    North         East    Units  Estimated Accuracy
 JV1222;SPC MD       -   181,870.      432,900.      MT  (+/- 180 meters Scaled)
 JV1222
 JV1222_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ604518(NAD 83)
 JV1222
 JV1222                          SUPERSEDED SURVEY CONTROL
 JV1222
 JV1222  NGVD 29 (11/26/84)   27.472  (m)           90.13   (f) ADJUSTED    2 0
 JV1222
 JV1222.Superseded values are not recommended for survey control.
 JV1222
 JV1222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1222.See file dsdata.pdf to determine how the superseded data were derived.
 JV1222
 JV1222_MARKER: B = BOLT
 JV1222_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1222_SP_SET: GRANITE STEP
 JV1222_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1222
 JV1222  HISTORY     - Date     Condition        Report By
 JV1222  HISTORY     - UNK      MONUMENTED       MD0050
 JV1222  HISTORY     - 1935     GOOD             CGS
 JV1222
 JV1222                          STATION DESCRIPTION
 JV1222
 JV1222'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1222'AT BALTIMORE.
 JV1222'AT BALTIMORE, AT THE SOUTHWEST CORNER OF THE INTERSECTION OF
 JV1222'CATHEDRAL AND PRESTON STREETS, AT THE EAST SIDE OF THE BRYN MAWR
 JV1222'SCHOOL, AND IN THE TOP GRANITE STEP.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2670 ***********************************************************************
 JV2670  DESIGNATION -  1282 WSSC
 JV2670  PID         -  JV2670
 JV2670  STATE/COUNTY-  MD/MONTGOMERY
 JV2670  COUNTRY     -  US
 JV2670  USGS QUAD   -  SANDY SPRING (2016)
 JV2670
 JV2670                         *CURRENT SURVEY CONTROL
 JV2670  ______________________________________________________________________
 JV2670* NAD 83(1986) POSITION- 39 08 55.     (N) 077 01 11.     (W)   SCALED
 JV2670* NAVD 88 ORTHO HEIGHT -   147.04  (+/-2cm)      482.4   (feet) VERTCON3
 JV2670  ______________________________________________________________________
 JV2670  GEOID HEIGHT    -        -31.905 (meters)                     GEOID18
 JV2670  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2670
 JV2670.The horizontal coordinates were scaled from a map and have
 JV2670.an estimated accuracy of +/- 6 seconds.
 JV2670
 JV2670.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2670.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2670
 JV2670.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2670.GEOID18 height accuracy estimate available here.
 JV2670
 JV2670.The vertical order pertains to the NGVD 29 superseded value.
 JV2670
 JV2670.Click photographs - Photos may exist for this station.
 JV2670
 JV2670;                    North         East    Units  Estimated Accuracy
 JV2670;SPC MD       -   164,500.      398,300.      MT  (+/- 180 meters Scaled)
 JV2670
 JV2670_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ254352(NAD 83)
 JV2670
 JV2670                          SUPERSEDED SURVEY CONTROL
 JV2670
 JV2670  NGVD 29 (11/26/84)  147.247  (m)          483.09   (f) ADJUSTED    2 0
 JV2670
 JV2670.Superseded values are not recommended for survey control.
 JV2670
 JV2670.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2670.See file dsdata.pdf to determine how the superseded data were derived.
 JV2670
 JV2670_MARKER: Z = SEE DESCRIPTION
 JV2670_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2670_SP_SET: STEP
 JV2670_STAMPING: WSSC 1282
 JV2670_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2670
 JV2670  HISTORY     - Date     Condition        Report By
 JV2670  HISTORY     - UNK      MONUMENTED       WSSC
 JV2670  HISTORY     - 1944     GOOD             WSSC
 JV2670  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2670  HISTORY     - 20011026 MARK NOT FOUND   USPSQD
 JV2670
 JV2670                          STATION DESCRIPTION
 JV2670
 JV2670'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2670'0.4 MI E FROM SANDY SPRING.
 JV2670'ON STATE HIGHWAY 108, AT SHERWOOD HIGH SCHOOL, AT THE FRONT
 JV2670'ENTRANCE, AND IN THE SOUTHWEST CORNER OF THE BOTTOM CONCRETE
 JV2670'STEP. LAG SCREW AND WASHER.
 JV2670
 JV2670                          STATION RECOVERY (1995)
 JV2670
 JV2670'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2670'MARK NOT FOUND.
 JV2670
 JV2670                          STATION RECOVERY (2001)
 JV2670
 JV2670'RECOVERY NOTE BY US POWER SQUADRON 2001 (BAS)
 JV2670'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2672 ***********************************************************************
 JV2672  DESIGNATION -  1283 WSSC
 JV2672  PID         -  JV2672
 JV2672  STATE/COUNTY-  MD/MONTGOMERY
 JV2672  COUNTRY     -  US
 JV2672  USGS QUAD   -  SANDY SPRING (2016)
 JV2672
 JV2672                         *CURRENT SURVEY CONTROL
 JV2672  ______________________________________________________________________
 JV2672* NAD 83(1986) POSITION- 39 08 58.     (N) 077 00 44.     (W)   SCALED
 JV2672* NAVD 88 ORTHO HEIGHT -   151.11  (+/-2cm)      495.8   (feet) VERTCON3
 JV2672  ______________________________________________________________________
 JV2672  GEOID HEIGHT    -        -31.918 (meters)                     GEOID18
 JV2672  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2672
 JV2672.The horizontal coordinates were scaled from a map and have
 JV2672.an estimated accuracy of +/- 6 seconds.
 JV2672
 JV2672.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2672.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2672
 JV2672.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2672.GEOID18 height accuracy estimate available here.
 JV2672
 JV2672.The vertical order pertains to the NGVD 29 superseded value.
 JV2672
 JV2672.Click photographs - Photos may exist for this station.
 JV2672
 JV2672;                    North         East    Units  Estimated Accuracy
 JV2672;SPC MD       -   164,600.      398,940.      MT  (+/- 180 meters Scaled)
 JV2672
 JV2672_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ261352(NAD 83)
 JV2672
 JV2672                          SUPERSEDED SURVEY CONTROL
 JV2672
 JV2672  NGVD 29 (11/26/84)  151.319  (m)          496.45   (f) ADJUSTED    2 0
 JV2672
 JV2672.Superseded values are not recommended for survey control.
 JV2672
 JV2672.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2672.See file dsdata.pdf to determine how the superseded data were derived.
 JV2672
 JV2672_MARKER: B = BOLT
 JV2672_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2672_SP_SET: BUILDING
 JV2672_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2672
 JV2672  HISTORY     - Date     Condition        Report By
 JV2672  HISTORY     - UNK      MONUMENTED       WSSC
 JV2672  HISTORY     - 1944     GOOD             WSSC
 JV2672  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2672
 JV2672                          STATION DESCRIPTION
 JV2672
 JV2672'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2672'AT ASHTON.
 JV2672'AT THE NORTHEAST CORNER OF THE MAIN INTERSECTION, IN FRONT
 JV2672'OF THE DERRICK MOTOR CO. PROPERTY, AT A SERVICE STATION, AND
 JV2672'IN THE SOUTHWEST CORNER OF THE STATION.
 JV2672
 JV2672                          STATION RECOVERY (1995)
 JV2672
 JV2672'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2672'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2673 ***********************************************************************
 JV2673  DESIGNATION -  1284 WSSC
 JV2673  PID         -  JV2673
 JV2673  STATE/COUNTY-  MD/MONTGOMERY
 JV2673  COUNTRY     -  US
 JV2673  USGS QUAD   -  SANDY SPRING (2016)
 JV2673
 JV2673                         *CURRENT SURVEY CONTROL
 JV2673  ______________________________________________________________________
 JV2673* NAD 83(1986) POSITION- 39 09 04.     (N) 077 00 25.     (W)   SCALED
 JV2673* NAVD 88 ORTHO HEIGHT -   133.22  (+/-2cm)      437.1   (feet) VERTCON3
 JV2673  ______________________________________________________________________
 JV2673  GEOID HEIGHT    -        -31.927 (meters)                     GEOID18
 JV2673  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2673
 JV2673.The horizontal coordinates were scaled from a map and have
 JV2673.an estimated accuracy of +/- 6 seconds.
 JV2673
 JV2673.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2673.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2673
 JV2673.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2673.GEOID18 height accuracy estimate available here.
 JV2673
 JV2673.The vertical order pertains to the NGVD 29 superseded value.
 JV2673
 JV2673.Click photographs - Photos may exist for this station.
 JV2673
 JV2673;                    North         East    Units  Estimated Accuracy
 JV2673;SPC MD       -   164,780.      399,400.      MT  (+/- 180 meters Scaled)
 JV2673
 JV2673_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ265354(NAD 83)
 JV2673
 JV2673                          SUPERSEDED SURVEY CONTROL
 JV2673
 JV2673  NGVD 29 (11/26/84)  133.434  (m)          437.77   (f) ADJUSTED    2 0
 JV2673
 JV2673.Superseded values are not recommended for survey control.
 JV2673
 JV2673.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2673.See file dsdata.pdf to determine how the superseded data were derived.
 JV2673
 JV2673_MARKER: B = BOLT
 JV2673_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2673_SP_SET: CULVERT
 JV2673_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2673
 JV2673  HISTORY     - Date     Condition        Report By
 JV2673  HISTORY     - UNK      MONUMENTED       WSSC
 JV2673  HISTORY     - 1944     GOOD             WSSC
 JV2673  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2673
 JV2673                          STATION DESCRIPTION
 JV2673
 JV2673'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2673'0.3 MI E FROM ASHTON.
 JV2673'ON THE CLARKSVILLE ROAD (U.S. HIGHWAY 29), AT THE FIRST STREAM
 JV2673'EAST OF TOWN, AT A CULVERT ON THE STREAM AND UNDER THE HIGHWAY,
 JV2673'AND IN THE TOP OF THE NORTH HEADWALL.
 JV2673
 JV2673                          STATION RECOVERY (1995)
 JV2673
 JV2673'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2673'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2674 ***********************************************************************
 JV2674  DESIGNATION -  1285 WSSC
 JV2674  PID         -  JV2674
 JV2674  STATE/COUNTY-  MD/MONTGOMERY
 JV2674  COUNTRY     -  US
 JV2674  USGS QUAD   -  SANDY SPRING (2016)
 JV2674
 JV2674                         *CURRENT SURVEY CONTROL
 JV2674  ______________________________________________________________________
 JV2674* NAD 83(1986) POSITION- 39 09 15.     (N) 077 00 11.     (W)   SCALED
 JV2674* NAVD 88 ORTHO HEIGHT -   134.86  (+/-2cm)      442.5   (feet) VERTCON3
 JV2674  ______________________________________________________________________
 JV2674  GEOID HEIGHT    -        -31.934 (meters)                     GEOID18
 JV2674  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2674
 JV2674.The horizontal coordinates were scaled from a map and have
 JV2674.an estimated accuracy of +/- 6 seconds.
 JV2674
 JV2674.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2674.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2674
 JV2674.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2674.GEOID18 height accuracy estimate available here.
 JV2674
 JV2674.The vertical order pertains to the NGVD 29 superseded value.
 JV2674
 JV2674.Click photographs - Photos may exist for this station.
 JV2674
 JV2674;                    North         East    Units  Estimated Accuracy
 JV2674;SPC MD       -   165,120.      399,740.      MT  (+/- 180 meters Scaled)
 JV2674
 JV2674_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ269357(NAD 83)
 JV2674
 JV2674                          SUPERSEDED SURVEY CONTROL
 JV2674
 JV2674  NGVD 29 (11/26/84)  135.069  (m)          443.14   (f) ADJUSTED    2 0
 JV2674
 JV2674.Superseded values are not recommended for survey control.
 JV2674
 JV2674.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2674.See file dsdata.pdf to determine how the superseded data were derived.
 JV2674
 JV2674_MARKER: B = BOLT
 JV2674_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2674_SP_SET: FOUNDATION
 JV2674_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2674
 JV2674  HISTORY     - Date     Condition        Report By
 JV2674  HISTORY     - UNK      MONUMENTED       WSSC
 JV2674  HISTORY     - 1944     GOOD             WSSC
 JV2674  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2674
 JV2674                          STATION DESCRIPTION
 JV2674
 JV2674'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2674'0.6 MI E FROM ASHTON.
 JV2674'ON THE CLARKSVILLE ROAD (U.S. HIGHWAY 29), ON THE SOUTH SIDE
 JV2674'OF THE HIGHWAY, AT THE EAST ONE OF TWO BRICK GATEPOSTS, AND IN
 JV2674'THE BACK OF THE CONCRETE FOUNDATION.
 JV2674
 JV2674                          STATION RECOVERY (1995)
 JV2674
 JV2674'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2674'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2675 ***********************************************************************
 JV2675  DESIGNATION -  1286 WSSC
 JV2675  PID         -  JV2675
 JV2675  STATE/COUNTY-  MD/MONTGOMERY
 JV2675  COUNTRY     -  US
 JV2675  USGS QUAD   -  CLARKSVILLE (2016)
 JV2675
 JV2675                         *CURRENT SURVEY CONTROL
 JV2675  ______________________________________________________________________
 JV2675* NAD 83(1986) POSITION- 39 09 21.     (N) 076 59 57.     (W)   SCALED
 JV2675* NAVD 88 ORTHO HEIGHT -   135.21  (+/-2cm)      443.6   (feet) VERTCON3
 JV2675  ______________________________________________________________________
 JV2675  GEOID HEIGHT    -        -31.941 (meters)                     GEOID18
 JV2675  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2675
 JV2675.The horizontal coordinates were scaled from a map and have
 JV2675.an estimated accuracy of +/- 6 seconds.
 JV2675
 JV2675.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2675.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2675
 JV2675.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2675.GEOID18 height accuracy estimate available here.
 JV2675
 JV2675.The vertical order pertains to the NGVD 29 superseded value.
 JV2675
 JV2675.Click photographs - Photos may exist for this station.
 JV2675
 JV2675;                    North         East    Units  Estimated Accuracy
 JV2675;SPC MD       -   165,310.      400,070.      MT  (+/- 180 meters Scaled)
 JV2675
 JV2675_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ272359(NAD 83)
 JV2675
 JV2675                          SUPERSEDED SURVEY CONTROL
 JV2675
 JV2675  NGVD 29 (11/26/84)  135.419  (m)          444.29   (f) ADJUSTED    2 0
 JV2675
 JV2675.Superseded values are not recommended for survey control.
 JV2675
 JV2675.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2675.See file dsdata.pdf to determine how the superseded data were derived.
 JV2675
 JV2675_MARKER: B = BOLT
 JV2675_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2675_SP_SET: TREE ROOT
 JV2675_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2675
 JV2675  HISTORY     - Date     Condition        Report By
 JV2675  HISTORY     - 1944     MONUMENTED       WSSC
 JV2675
 JV2675                          STATION DESCRIPTION
 JV2675
 JV2675'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2675'0.8 MI E FROM ASHTON.
 JV2675'ON THE CLARKSVILLE ROAD (US HWY 29), AT THE JUNCTION OF MINK HOLLOW
 JV2675'ROAD, 40 FT N OF THE CENTERLINE OF THE HWY, 20 FT E OF THE CENTERLINE
 JV2675'OF MINK HOLLOW ROAD, AND IN THE E ROOT OF A 36 INCH WHITE OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5985 ***********************************************************************
 JV5985  DESIGNATION -  12873 WSSC 1969
 JV5985  PID         -  JV5985
 JV5985  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5985  COUNTRY     -  US
 JV5985  USGS QUAD   -  BELTSVILLE (2016)
 JV5985
 JV5985                         *CURRENT SURVEY CONTROL
 JV5985  ______________________________________________________________________
 JV5985* NAD 83(1991) POSITION- 39 03 53.63520(N) 076 56 12.36687(W)   ADJUSTED
 JV5985* NAVD 88 ORTHO HEIGHT -    83.    (meters)      272.    (feet) SCALED
 JV5985  ______________________________________________________________________
 JV5985  GEOID HEIGHT    -        -32.084 (meters)                     GEOID18
 JV5985  LAPLACE CORR    -         -3.67  (seconds)                    DEFLEC18
 JV5985  HORZ ORDER      -  SECOND
 JV5985
 JV5985.The horizontal coordinates were established by classical geodetic methods
 JV5985.and adjusted by the National Geodetic Survey in January 1992.
 JV5985
 JV5985.The orthometric height was scaled from a topographic map.
 JV5985
 JV5985.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5985.GEOID18 height accuracy estimate available here.
 JV5985
 JV5985.Click photographs - Photos may exist for this station.
 JV5985
 JV5985.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5985
 JV5985. The following values were computed from the NAD 83(1991) position.
 JV5985
 JV5985;                    North         East     Units Scale Factor Converg.
 JV5985;SPC MD       -   155,212.566   405,472.258   MT  0.99995528   +0 02 22.9
 JV5985;SPC MD       -   509,226.56  1,330,286.90   sFT  0.99995528   +0 02 22.9
 JV5985;UTM  18      - 4,325,763.628   332,438.489   MT  0.99994573   -1 13 15.0
 JV5985
 JV5985!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5985!SPC MD       -   0.99999205  x   0.99995528  =   0.99994733
 JV5985!UTM  18      -   0.99999205  x   0.99994573  =   0.99993778
 JV5985
 JV5985_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3243825763(NAD 83)
 JV5985
 JV5985                          SUPERSEDED SURVEY CONTROL
 JV5985
 JV5985  NAD 83(1986)-  39 03 53.63426(N)    076 56 12.37720(W) AD(       ) 2
 JV5985  NAD 27      -  39 03 53.24195(N)    076 56 13.46881(W) AD(       ) 2
 JV5985
 JV5985.Superseded values are not recommended for survey control.
 JV5985
 JV5985.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5985.See file dsdata.pdf to determine how the superseded data were derived.
 JV5985
 JV5985_MARKER: I = METAL ROD
 JV5985_SETTING: 0 = UNSPECIFIED SETTING
 JV5985_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5985
 JV5985  HISTORY     - Date     Condition        Report By
 JV5985  HISTORY     - 1969     MONUMENTED       WSSC
 JV5985
 JV5985                          STATION DESCRIPTION
 JV5985
 JV5985'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5985'THE STATION IS ABOUT 3 MILES SOUTH OF BURTONSVILLE AND 2 MILES
 JV5985'NORTHWEST OF BELTSVILLE.
 JV5985'
 JV5985'THE STATION IS IN THE INTERSECTION OF FAIRLAND ROAD AND BRIGGS
 JV5985'CHANEY ROAD.
 JV5985'
 JV5985'THE STATION MARK IS A 1/2 INCH IRON PIPE WITH A BRASS SCREW
 JV5985'CENTER AND IS 9 INCHES BELOW THE SURFACE.  IT IS 57.29 FEET SOUTH
 JV5985'OF POLE NO. 319719, 45.22 FEET SOUTHWEST OF POLE NO. 319719, AND
 JV5985'49.97 FEET NORTHWEST OF THE SOUTHWEST CORNER OF HOUSE 3200.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0558 ***********************************************************************
 JV0558  DESIGNATION -  1288 C OF B
 JV0558  PID         -  JV0558
 JV0558  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0558  COUNTRY     -  US
 JV0558  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0558
 JV0558                         *CURRENT SURVEY CONTROL
 JV0558  ______________________________________________________________________
 JV0558* NAD 83(1986) POSITION- 39 18 01.     (N) 076 37 14.     (W)   SCALED
 JV0558* NAVD 88 ORTHO HEIGHT -    38.499 (meters)      126.31  (feet) ADJUSTED
 JV0558  ______________________________________________________________________
 JV0558  GEOID HEIGHT    -        -32.683 (meters)                     GEOID18
 JV0558  DYNAMIC HEIGHT  -         38.479 (meters)      126.24  (feet) COMP
 JV0558  MODELED GRAVITY -    980,104.5   (mgal)                       NAVD 88
 JV0558
 JV0558  VERT ORDER      -  FIRST     CLASS II
 JV0558
 JV0558.The horizontal coordinates were scaled from a map and have
 JV0558.an estimated accuracy of +/- 6 seconds.
 JV0558
 JV0558.The orthometric height was determined by differential leveling and
 JV0558.adjusted by the NATIONAL GEODETIC SURVEY
 JV0558.in June 1991.
 JV0558
 JV0558.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0558.GEOID18 height accuracy estimate available here.
 JV0558
 JV0558.Click photographs - Photos may exist for this station.
 JV0558
 JV0558.The dynamic height is computed by dividing the NAVD 88
 JV0558.geopotential number by the normal gravity value computed on the
 JV0558.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0558.degrees latitude (g = 980.6199 gals.).
 JV0558
 JV0558.The modeled gravity was interpolated from observed gravity values.
 JV0558
 JV0558;                    North         East    Units  Estimated Accuracy
 JV0558;SPC MD       -   181,410.      432,730.      MT  (+/- 180 meters Scaled)
 JV0558
 JV0558_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ602513(NAD 83)
 JV0558
 JV0558                          SUPERSEDED SURVEY CONTROL
 JV0558
 JV0558  NGVD 29 (11/26/84)   38.733  (m)          127.08   (f) ADJUSTED    1 2
 JV0558
 JV0558.Superseded values are not recommended for survey control.
 JV0558
 JV0558.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0558.See file dsdata.pdf to determine how the superseded data were derived.
 JV0558
 JV0558_MARKER: B = BOLT
 JV0558_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0558_SP_SET: STEP
 JV0558_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0558_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0558+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV0558
 JV0558  HISTORY     - Date     Condition        Report By
 JV0558  HISTORY     - UNK      MONUMENTED       MD0050
 JV0558  HISTORY     - 1933     GOOD             CGS
 JV0558  HISTORY     - 1935     GOOD             CGS
 JV0558  HISTORY     - 20110315 GOOD             GEOCAC
 JV0558
 JV0558                          STATION DESCRIPTION
 JV0558
 JV0558'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 JV0558'AT BALTIMORE.
 JV0558'AT BALTIMORE, AT THE OLD ARMORY OCCUPYING A SMALL SQUARE BOUNDED
 JV0558'ON THE WEST BY LINDEN STREET, ON THE NORTH BY BIDDLE AND RICHMOND
 JV0558'STREETS, ON THE EAST BY HOWARD STREET, AND ON THE SOUTH BY
 JV0558'ARMORY PLACE, AT THE MAIN ENTRANCE ON ARMORY PLACE, IN THE TOP
 JV0558'OF THE TOP STEP, 15 INCHES FROM THE EAST END, AND 4 INCHES FROM
 JV0558'THE SOUTH EDGE.  A COPPER BOLT.
 JV0558
 JV0558                          STATION RECOVERY (1935)
 JV0558
 JV0558'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JV0558'RECOVERED IN GOOD CONDITION.
 JV0558
 JV0558                          STATION RECOVERY (2011)
 JV0558
 JV0558'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV0558'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0801 ***********************************************************************
 JV0801  DESIGNATION -  1294 C OF B
 JV0801  PID         -  JV0801
 JV0801  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0801  COUNTRY     -  US
 JV0801  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0801
 JV0801                         *CURRENT SURVEY CONTROL
 JV0801  ______________________________________________________________________
 JV0801* NAD 83(1986) POSITION- 39 17 59.     (N) 076 38 36.     (W)   SCALED
 JV0801* NAVD 88 ORTHO HEIGHT -    53.706 (meters)      176.20  (feet) ADJUSTED
 JV0801  ______________________________________________________________________
 JV0801  GEOID HEIGHT    -        -32.615 (meters)                     GEOID18
 JV0801  DYNAMIC HEIGHT  -         53.677 (meters)      176.11  (feet) COMP
 JV0801  MODELED GRAVITY -    980,105.7   (mgal)                       NAVD 88
 JV0801
 JV0801  VERT ORDER      -  SECOND    CLASS 0
 JV0801
 JV0801.The horizontal coordinates were scaled from a map and have
 JV0801.an estimated accuracy of +/- 6 seconds.
 JV0801
 JV0801.The orthometric height was determined by differential leveling and
 JV0801.adjusted by the NATIONAL GEODETIC SURVEY
 JV0801.in June 1991.
 JV0801
 JV0801.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0801.GEOID18 height accuracy estimate available here.
 JV0801
 JV0801.Click photographs - Photos may exist for this station.
 JV0801
 JV0801.The dynamic height is computed by dividing the NAVD 88
 JV0801.geopotential number by the normal gravity value computed on the
 JV0801.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0801.degrees latitude (g = 980.6199 gals.).
 JV0801
 JV0801.The modeled gravity was interpolated from observed gravity values.
 JV0801
 JV0801;                    North         East    Units  Estimated Accuracy
 JV0801;SPC MD       -   181,340.      430,770.      MT  (+/- 180 meters Scaled)
 JV0801
 JV0801_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ582513(NAD 83)
 JV0801
 JV0801                          SUPERSEDED SURVEY CONTROL
 JV0801
 JV0801  NGVD 29 (11/26/84)   53.936  (m)          176.96   (f) ADJUSTED    2 0
 JV0801
 JV0801.Superseded values are not recommended for survey control.
 JV0801
 JV0801.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0801.See file dsdata.pdf to determine how the superseded data were derived.
 JV0801
 JV0801_MARKER: B = BOLT
 JV0801_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0801_SP_SET: STEP
 JV0801_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0801
 JV0801  HISTORY     - Date     Condition        Report By
 JV0801  HISTORY     - UNK      MONUMENTED       MD0050
 JV0801  HISTORY     - 1966     GOOD             MDSRC
 JV0801  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV0801
 JV0801                          STATION DESCRIPTION
 JV0801
 JV0801'DESCRIBED BY MD STATE ROADS COMM 1966
 JV0801'AT BALTIMORE.
 JV0801'AT BALTIMORE, AT THE NORTHWEST CORNER OF GILMOR AND MOSHER
 JV0801'STREETS, AT THE GILMORE STREET ENTRANCE TO SCHOOL 11, IN THE
 JV0801'TOP NORTH END OF THE FOURTH STEP, 0.4 FOOT FROM THE SIDE OF
 JV0801'THE STONE AND 0.6 FOOT FROM THE NORTH JAMB.  A COPPER BOLT.
 JV0801
 JV0801                          STATION RECOVERY (2003)
 JV0801
 JV0801'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0801'NOT FOUND.  NOTE-- AT THE NORTHWEST CORNER OF THE JUNCTION OF MOSHER
 JV0801'STREET AND GILMORE STREET IS THE SANDTOWN WINCHESTER NURSING HOME.
 JV0801'THERE ARE NO STEPS PRESENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8515 ***********************************************************************
 AI8515  DESIGNATION -  12IA
 AI8515  PID         -  AI8515
 AI8515  STATE/COUNTY-  MD/HOWARD
 AI8515  COUNTRY     -  US
 AI8515  USGS QUAD   -  DAMASCUS (2016)
 AI8515
 AI8515                         *CURRENT SURVEY CONTROL
 AI8515  ______________________________________________________________________
 AI8515* NAD 83(2011) POSITION- 39 17 08.00707(N) 077 07 45.79179(W)   ADJUSTED
 AI8515* NAD 83(2011) ELLIP HT-   140.104 (meters)        (06/27/12)   ADJUSTED
 AI8515* NAD 83(2011) EPOCH   -  2010.00
 AI8515* NAVD 88 ORTHO HEIGHT -   171.9   (meters)      564.    (feet) GPS OBS
 AI8515  ______________________________________________________________________
 AI8515  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8515  GEOID HEIGHT    -        -31.803 (meters)                     GEOID99
 AI8515  GEOID HEIGHT    -        -31.818 (meters)                     GEOID18
 AI8515  NAD 83(2011) X  -  1,101,148.313 (meters)                     COMP
 AI8515  NAD 83(2011) Y  - -4,819,222.993 (meters)                     COMP
 AI8515  NAD 83(2011) Z  -  4,016,993.062 (meters)                     COMP
 AI8515  LAPLACE CORR    -         -0.04  (seconds)                    DEFLEC18
 AI8515
 AI8515  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8515  Standards:
 AI8515         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8515            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8515  -------------------------------------------------------------------
 AI8515  NETWORK    1.50   1.71           0.66   0.55   0.87     -0.17676114
 AI8515  -------------------------------------------------------------------
 AI8515  Click here for local accuracies and other accuracy information.
 AI8515
 AI8515.The horizontal coordinates were established by GPS observations
 AI8515.and adjusted by the National Geodetic Survey in June 2012.
 AI8515
 AI8515.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8515.been affixed to the stable North American tectonic plate. See 
 AI8515.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8515
 AI8515.The horizontal coordinates are valid at the epoch date displayed above
 AI8515.which is a decimal equivalence of Year/Month/Day.
 AI8515
 AI8515.The orthometric height was determined by GPS observations and a
 AI8515.high-resolution geoid model.
 AI8515
 AI8515.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8515.GEOID18 height accuracy estimate available here.
 AI8515
 AI8515.Click photographs - Photos may exist for this station.
 AI8515
 AI8515.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8515
 AI8515.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8515
 AI8515.The ellipsoidal height was determined by GPS observations
 AI8515.and is referenced to NAD 83.
 AI8515
 AI8515. The following values were computed from the NAD 83(2011) position.
 AI8515
 AI8515;                    North         East     Units Scale Factor Converg.
 AI8515;SPC MD       -   179,714.989   388,837.174   MT  0.99997537   -0 04 52.3
 AI8515;SPC MD       -   589,614.93  1,275,709.96   sFT  0.99997537   -0 04 52.3
 AI8515;UTM  18      - 4,350,627.412   316,347.655   MT  1.00001530   -1 20 55.2
 AI8515
 AI8515!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8515!SPC MD       -   0.99997802  x   0.99997537  =   0.99995339
 AI8515!UTM  18      -   0.99997802  x   1.00001530  =   0.99999332
 AI8515
 AI8515_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1634750627(NAD 83)
 AI8515
 AI8515                          SUPERSEDED SURVEY CONTROL
 AI8515
 AI8515  NAD 83(2007)-  39 17 08.00722(N)    077 07 45.79239(W) AD(2002.00) 0
 AI8515  ELLIP H (02/10/07)  140.132  (m)                       GP(2002.00)    
 AI8515  ELLIP H (08/30/02)  140.132  (m)                       GP(       ) 4 2
 AI8515  NAD 83(1991)-  39 17 08.00711(N)    077 07 45.79254(W) AD(       ) 1
 AI8515  ELLIP H (11/16/00)  140.019  (m)                       GP(       ) 4 1
 AI8515
 AI8515.Superseded values are not recommended for survey control.
 AI8515
 AI8515.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8515.See file dsdata.pdf to determine how the superseded data were derived.
 AI8515
 AI8515_MARKER: DD = SURVEY DISK
 AI8515_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8515_STAMPING: 12IA
 AI8515_MARK LOGO: MD-027
 AI8515_PROJECTION: FLUSH
 AI8515_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8515_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8515+STABILITY: SURFACE MOTION
 AI8515_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8515+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8515
 AI8515  HISTORY     - Date     Condition        Report By
 AI8515  HISTORY     - 1992     MONUMENTED       MD-027
 AI8515  HISTORY     - 20000915 GOOD             MD-027
 AI8515
 AI8515                          STATION DESCRIPTION
 AI8515
 AI8515'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8515'DESCRIPTION BY HOWARD COUNTY 2000 .  THE STATION IS LOCATED 2
 AI8515'MILES SOUTHWEST OF FLORENCE,  5 MILES SSE OF MOUNT AIRY,  4 MILES
 AI8515'EST OF DAMASCUS, AND 10 MILES SW OF SYKESVILLE. TO REACH THE
 AI8515'STATION FROM THE BRIDGE OF WOODBINE ROAD (STATE HIGHWAY 94) OVER
 AI8515'THE PATAPSCO RIVER GO NORTHEAST  0.7 MILES ALONG ROUTE 94 TO
 AI8515'THE     STATION ON THE LEFT (WEST).. THE STATION IS 0.3 MILES NORTH OF
 AI8515'ANNAPOLIS MILL ROAD, 0.3 MILES SOUTH OF ASHLEY COURT, ACROSS THE
 AI8515'STRRET  FROM HOUSE NUMBER 3645 WOODBINE ROAD, 16 FEET WEST
 AI8515'FROM     CENTERLINE OF WOODBINE ROAD, 4.7 FEET SOUTH OF POLE P AND
 AI8515'E 47650,   65   FEET NOTH OF THE CENTERLINE  OF MACADAM ENTRY TO
 AI8515'HOUSE   NUMBER   3640 AND 36.5 FEET SOUTH FROM THE CENTERLINE
 AI8515'EXTENDED OF   THE   ENTRANCE TO HOUSE NUMBER 3645,. THE STATION IS
 AI8515'A STANDARD     HOWARD COUNTY SURVEY DISC SET ON CONCRETE BASE,
 AI8515'FLUSH WITH THE     GROUND.
 AI8515'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4878 ***********************************************************************
 JV4878  DESIGNATION -  13
 JV4878  PID         -  JV4878
 JV4878  STATE/COUNTY-  MD/CECIL
 JV4878  COUNTRY     -  US
 JV4878  USGS QUAD   -  SPESUTIE (2016)
 JV4878
 JV4878                         *CURRENT SURVEY CONTROL
 JV4878  ______________________________________________________________________
 JV4878* NAD 83(1991) POSITION- 39 25 23.07989(N) 076 00 09.17109(W)   ADJUSTED
 JV4878* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV4878  ______________________________________________________________________
 JV4878  GEOID HEIGHT    -        -33.379 (meters)                     GEOID18
 JV4878  LAPLACE CORR    -         -1.12  (seconds)                    DEFLEC18
 JV4878  HORZ ORDER      -  THIRD
 JV4878
 JV4878.The horizontal coordinates were established by classical geodetic methods
 JV4878.and adjusted by the National Geodetic Survey in January 1992.
 JV4878
 JV4878.The orthometric height was scaled from a topographic map.
 JV4878
 JV4878.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4878.GEOID18 height accuracy estimate available here.
 JV4878
 JV4878.Click photographs - Photos may exist for this station.
 JV4878
 JV4878.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4878
 JV4878. The following values were computed from the NAD 83(1991) position.
 JV4878
 JV4878;                    North         East     Units Scale Factor Converg.
 JV4878;SPC MD       -   195,443.873   485,886.686   MT  0.99999540   +0 37 33.7
 JV4878;SPC MD       -   641,218.77  1,594,113.24   sFT  0.99999540   +0 37 33.7
 JV4878;UTM  18      - 4,364,207.152   413,706.153   MT  0.99969168   -0 38 12.1
 JV4878
 JV4878!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4878!SPC MD       -   1.00000512  x   0.99999540  =   1.00000052
 JV4878!UTM  18      -   1.00000512  x   0.99969168  =   0.99969680
 JV4878
 JV4878_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1370664207(NAD 83)
 JV4878
 JV4878                          SUPERSEDED SURVEY CONTROL
 JV4878
 JV4878  NAD 83(1986)-  39 25 23.07228(N)    076 00 09.17748(W) AD(       ) 3
 JV4878  NAD 27      -  39 25 22.68000(N)    076 00 10.38300(W) AD(       ) 3
 JV4878
 JV4878.Superseded values are not recommended for survey control.
 JV4878
 JV4878.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4878.See file dsdata.pdf to determine how the superseded data were derived.
 JV4878
 JV4878_MARKER: DD = SURVEY DISK
 JV4878_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4878_STAMPING: NO. 13
 JV4878_MARK LOGO: USACE
 JV4878_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4878+STABILITY: SURFACE MOTION
 JV4878
 JV4878  HISTORY     - Date     Condition        Report By
 JV4878  HISTORY     - 1937     MONUMENTED       USACE
 JV4878  HISTORY     - 1938     GOOD             CGS
 JV4878  HISTORY     - 1973     MARK NOT FOUND   NGS
 JV4878
 JV4878                          STATION DESCRIPTION
 JV4878
 JV4878'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JV4878'LOCATED ON THE E SIDE OF CHESAPEAKE BAY ABOUT 600 METERS N OF THE
 JV4878'MOUTH OF POND CREEK AND ON POND NECK.  THE STATION IS IN A MEADOW
 JV4878'ON THE EDGE OF A 30-FOOT BLUFF AND OVERLOOKS THE BAY.  IT IS
 JV4878'MARKED BY A STANDARD U.S.E. DISK, STAMPED NO.13, SET ATOP A
 JV4878'6-INCH SQUARE CONCRETE POST AND PROJECTS 2 INCHES ABOVE
 JV4878'GROUND.  THE REFERENCE MARKS ARE STANDARD U.S.E. DISKS SET ATOP
 JV4878'CONCRETE POSTS.
 JV4878
 JV4878                          STATION RECOVERY (1938)
 JV4878
 JV4878'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JV4878'STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.  THE
 JV4878'REFERENCE MARKS WERE NOT FOUND.  IT IS DOUBTFUL IF ANY REFERENCE
 JV4878'MARKS ARE AT THIS STATION.  THE LAND INSHORE FROM THE STATION
 JV4878'IS NOW A CORNFIELD INSTEAD OF A MEADOW.
 JV4878
 JV4878                          STATION RECOVERY (1973)
 JV4878
 JV4878'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV4878'THE STATION WAS SEARCHED FOR BUT NOT FOUND.  IT IS BELIEVED ALL
 JV4878'MARKS WERE WASHED INTO THE CHESAPEAKE BAY.
 JV4878'
 JV4878'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4878'6 MILES WEST OF EARLESVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4851 ***********************************************************************
 JV4851  DESIGNATION -  13 A
 JV4851  PID         -  JV4851
 JV4851  STATE/COUNTY-  MD/CECIL
 JV4851  COUNTRY     -  US
 JV4851  USGS QUAD   -  SPESUTIE (2016)
 JV4851
 JV4851                         *CURRENT SURVEY CONTROL
 JV4851  ______________________________________________________________________
 JV4851* NAD 83(1991) POSITION- 39 24 22.91050(N) 076 01 20.05928(W)   ADJUSTED
 JV4851* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 JV4851  ______________________________________________________________________
 JV4851  GEOID HEIGHT    -        -33.372 (meters)                     GEOID18
 JV4851  LAPLACE CORR    -         -1.20  (seconds)                    DEFLEC18
 JV4851  HORZ ORDER      -  THIRD
 JV4851
 JV4851.The horizontal coordinates were established by classical geodetic methods
 JV4851.and adjusted by the National Geodetic Survey in January 1992.
 JV4851
 JV4851.The orthometric height was scaled from a topographic map.
 JV4851
 JV4851.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4851.GEOID18 height accuracy estimate available here.
 JV4851
 JV4851.Click photographs - Photos may exist for this station.
 JV4851
 JV4851.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4851
 JV4851. The following values were computed from the NAD 83(1991) position.
 JV4851
 JV4851;                    North         East     Units Scale Factor Converg.
 JV4851;SPC MD       -   193,570.033   484,211.098   MT  0.99999266   +0 36 49.2
 JV4851;SPC MD       -   635,071.02  1,588,615.91   sFT  0.99999266   +0 36 49.2
 JV4851;UTM  18      - 4,362,371.243   411,990.195   MT  0.99969537   -0 38 56.3
 JV4851
 JV4851!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4851!SPC MD       -   1.00000339  x   0.99999266  =   0.99999605
 JV4851!UTM  18      -   1.00000339  x   0.99969537  =   0.99969876
 JV4851
 JV4851_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1199062371(NAD 83)
 JV4851
 JV4851                          SUPERSEDED SURVEY CONTROL
 JV4851
 JV4851  NAD 83(1986)-  39 24 22.90298(N)    076 01 20.06580(W) AD(       ) 3
 JV4851  NAD 27      -  39 24 22.51500(N)    076 01 21.26600(W) AD(       ) 3
 JV4851
 JV4851.Superseded values are not recommended for survey control.
 JV4851
 JV4851.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4851.See file dsdata.pdf to determine how the superseded data were derived.
 JV4851
 JV4851_MARKER: DD = SURVEY DISK
 JV4851_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4851_STAMPING: 13A
 JV4851_MARK LOGO: USACE
 JV4851_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4851+STABILITY: SURFACE MOTION
 JV4851
 JV4851  HISTORY     - Date     Condition        Report By
 JV4851  HISTORY     - 1937     MONUMENTED       USACE
 JV4851
 JV4851                          STATION DESCRIPTION
 JV4851
 JV4851'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JV4851'LOCATED ON THE EASTERN SHORE OF CHESAPEAKE BAY, N OF THE MOUTH OF
 JV4851'SASSAFRAS RIVER AND ABOUT 1 MILE SW OF THE ENTRANCE TO POND
 JV4851'CREEK.  IT IS ABOUT 400 METERS SW OF A LOW AREA OF BRUSH AND SMALL
 JV4851'TREES.  THE STATION IS ON THE TOP OF A 50-FOOT BLUFF, 3.5 METERS
 JV4851'INSHORE FROM THE EDGE, AND IS IN A SMALL CLEARING.  THE STATION
 JV4851'IS MARKED BY A STANDARD U.S.E. DISK STAMPED 13A, SET ATOP A
 JV4851'6-INCH SQUARE CONCRETE POST.  THE REFERENCE MARKS ARE U.S.E.
 JV4851'DISKS SET ATOP CONCRETE POSTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2260 ***********************************************************************
 HU2260  DESIGNATION -  13 KEM
 HU2260  PID         -  HU2260
 HU2260  STATE/COUNTY-  MD/WICOMICO
 HU2260  COUNTRY     -  US
 HU2260  USGS QUAD   -  NANTICOKE (2016)
 HU2260
 HU2260                         *CURRENT SURVEY CONTROL
 HU2260  ______________________________________________________________________
 HU2260* NAD 83(1986) POSITION- 38 18 24.1    (N) 075 53 21.3    (W)   HD_HELD2
 HU2260* NAVD 88 ORTHO HEIGHT -     6.769 (meters)       22.21  (feet) ADJUSTED
 HU2260  ______________________________________________________________________
 HU2260  GEOID HEIGHT    -        -35.686 (meters)                     GEOID18
 HU2260  DYNAMIC HEIGHT  -          6.765 (meters)       22.19  (feet) COMP
 HU2260  MODELED GRAVITY -    979,995.6   (mgal)                       NAVD 88
 HU2260
 HU2260  VERT ORDER      -  SECOND    CLASS I
 HU2260
 HU2260.The horizontal coordinates were established by autonomous hand held GPS
 HU2260.observations and have an estimated accuracy of +/- 10 meters.
 HU2260
 HU2260.The orthometric height was determined by differential leveling and
 HU2260.adjusted by the NATIONAL GEODETIC SURVEY
 HU2260.in June 1991.
 HU2260
 HU2260.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2260.GEOID18 height accuracy estimate available here.
 HU2260
 HU2260.Click photographs - Photos may exist for this station.
 HU2260
 HU2260.The dynamic height is computed by dividing the NAVD 88
 HU2260.geopotential number by the normal gravity value computed on the
 HU2260.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2260.degrees latitude (g = 980.6199 gals.).
 HU2260
 HU2260.The modeled gravity was interpolated from observed gravity values.
 HU2260
 HU2260;                    North         East    Units  Estimated Accuracy
 HU2260;SPC MD       -    71,637.      497,150.      MT  (+/- 10 meters HH2 GPS)
 HU2260
 HU2260_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2225140218(NAD 83)
 HU2260
 HU2260                          SUPERSEDED SURVEY CONTROL
 HU2260
 HU2260  NGVD 29 (06/12/91)    7.023  (m)           23.04   (f) ADJUSTED    2 1
 HU2260
 HU2260.Superseded values are not recommended for survey control.
 HU2260
 HU2260.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2260.See file dsdata.pdf to determine how the superseded data were derived.
 HU2260
 HU2260_MARKER: DB = BENCH MARK DISK
 HU2260_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2260_STAMPING: 13 KEM 1977
 HU2260_MARK LOGO: USGS
 HU2260_PROJECTION: FLUSH
 HU2260_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2260_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2260+STABILITY: SURFACE MOTION
 HU2260_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2260+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2019
 HU2260
 HU2260  HISTORY     - Date     Condition        Report By
 HU2260  HISTORY     - 1977     MONUMENTED       USGS
 HU2260  HISTORY     - 19900301 GOOD             NGS
 HU2260  HISTORY     - 20190514 SEE DESCRIPTION  PROFLN
 HU2260
 HU2260                          STATION DESCRIPTION
 HU2260
 HU2260'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2260'IN BIVALVE, AT THE INTERSECTION OF STATE HIGHWAY 349 AND BIVALVE
 HU2260'WHARF ROAD, 27.4 M (89.89 FT) NORTH OF THE CENTER OF THE ROAD, 6.7 M
 HU2260'(21.98 FT) WEST OF THE EXTENDED CENTER OF THE HIGHWAY, 1.8 M (5.91
 HU2260'FT) ABOVE THE LEVEL OF THE ROAD, 1.2 M (3.94 FT) SOUTH OF THE SOUTH
 HU2260'FACE OF THE UNITED METHODIST CHURCH, 0.4 M (1.31 FT) WEST OF THE WEST
 HU2260'FACE OF THE FRONT PORCH OF THE CHURCH, AND IN A CONCRETE MONUMENT
 HU2260'THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2260
 HU2260                          STATION RECOVERY (2019)
 HU2260
 HU2260'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2260'THE MARK ITSELF IS IN GOOD CONDITION BUT IS 4 FT (1.2 M) BELOW A
 HU2260'WOODEN HANDICAP RAMP AND BEHIND AN ACCESS RAILING WHICH CAN BE REMOVED
 HU2260'BY HARDWARE ON THE BACK OR INNER SIDE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1182 ***********************************************************************
 JV1182  DESIGNATION -  13 PRR
 JV1182  PID         -  JV1182
 JV1182  STATE/COUNTY-  MD/BALTIMORE
 JV1182  COUNTRY     -  US
 JV1182  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1182
 JV1182                         *CURRENT SURVEY CONTROL
 JV1182  ______________________________________________________________________
 JV1182* NAD 83(1986) POSITION- 39 25 27.     (N) 076 37 46.     (W)   SCALED
 JV1182* NAVD 88 ORTHO HEIGHT -    99.984 (meters)      328.03  (feet) ADJUSTED
 JV1182  ______________________________________________________________________
 JV1182  GEOID HEIGHT    -        -32.486 (meters)                     GEOID18
 JV1182  DYNAMIC HEIGHT  -         99.931 (meters)      327.86  (feet) COMP
 JV1182  MODELED GRAVITY -    980,097.7   (mgal)                       NAVD 88
 JV1182
 JV1182  VERT ORDER      -  SECOND    CLASS 0
 JV1182
 JV1182.The horizontal coordinates were scaled from a map and have
 JV1182.an estimated accuracy of +/- 6 seconds.
 JV1182
 JV1182.The orthometric height was determined by differential leveling and
 JV1182.adjusted by the NATIONAL GEODETIC SURVEY
 JV1182.in June 1991.
 JV1182
 JV1182.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1182.GEOID18 height accuracy estimate available here.
 JV1182
 JV1182.Click photographs - Photos may exist for this station.
 JV1182
 JV1182.The dynamic height is computed by dividing the NAVD 88
 JV1182.geopotential number by the normal gravity value computed on the
 JV1182.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1182.degrees latitude (g = 980.6199 gals.).
 JV1182
 JV1182.The modeled gravity was interpolated from observed gravity values.
 JV1182
 JV1182;                    North         East    Units  Estimated Accuracy
 JV1182;SPC MD       -   195,160.      431,910.      MT  (+/- 180 meters Scaled)
 JV1182
 JV1182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ597651(NAD 83)
 JV1182
 JV1182                          SUPERSEDED SURVEY CONTROL
 JV1182
 JV1182  NGVD 29 (11/26/84)  100.205  (m)          328.76   (f) ADJUSTED    2 0
 JV1182
 JV1182.Superseded values are not recommended for survey control.
 JV1182
 JV1182.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1182.See file dsdata.pdf to determine how the superseded data were derived.
 JV1182
 JV1182_MARKER: B = BOLT
 JV1182_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1182_SP_SET: STEP
 JV1182_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1182
 JV1182  HISTORY     - Date     Condition        Report By
 JV1182  HISTORY     - UNK      MONUMENTED       PRR
 JV1182  HISTORY     - 1939     GOOD             CGS
 JV1182
 JV1182                          STATION DESCRIPTION
 JV1182
 JV1182'DESCRIBED BY COAST AND GEODETIC SURVEY 1939
 JV1182'AT LUTHERVILLE.
 JV1182'AT LUTHERVILLE, ALONG THE PENNSYLVANIA RAILROAD, AT THE STATION,
 JV1182'ON THE TOP OF THE SOUTHWEST END OF THE TOP CONCRETE STEP AT
 JV1182'ENTRANCE TO THE NORTH DOOR OF THE STATION BUILDING, 9.2 FEET
 JV1182'SOUTHWEST OF THE EAST CORNER OF THE STATION AND 40 FEET WEST OF
 JV1182'THE TRACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2822 ***********************************************************************
 JV2822  DESIGNATION -  13 WRA
 JV2822  PID         -  JV2822
 JV2822  STATE/COUNTY-  MD/MONTGOMERY
 JV2822  COUNTRY     -  US
 JV2822  USGS QUAD   -  ROCKVILLE (2016)
 JV2822
 JV2822                         *CURRENT SURVEY CONTROL
 JV2822  ______________________________________________________________________
 JV2822* NAD 83(1986) POSITION- 39 02 45.     (N) 077 13 02.     (W)   SCALED
 JV2822* NAVD 88 ORTHO HEIGHT -    77.620 (meters)      254.66  (feet) ADJUSTED
 JV2822  ______________________________________________________________________
 JV2822  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV2822  DYNAMIC HEIGHT  -         77.580 (meters)      254.53  (feet) COMP
 JV2822  MODELED GRAVITY -    980,110.5   (mgal)                       NAVD 88
 JV2822
 JV2822  VERT ORDER      -  SECOND    CLASS 0
 JV2822
 JV2822.The horizontal coordinates were scaled from a map and have
 JV2822.an estimated accuracy of +/- 6 seconds.
 JV2822
 JV2822.The orthometric height was determined by differential leveling and
 JV2822.adjusted by the NATIONAL GEODETIC SURVEY
 JV2822.in June 1991.
 JV2822
 JV2822.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2822.GEOID18 height accuracy estimate available here.
 JV2822
 JV2822.Click photographs - Photos may exist for this station.
 JV2822
 JV2822.The dynamic height is computed by dividing the NAVD 88
 JV2822.geopotential number by the normal gravity value computed on the
 JV2822.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2822.degrees latitude (g = 980.6199 gals.).
 JV2822
 JV2822.The modeled gravity was interpolated from observed gravity values.
 JV2822
 JV2822;                    North         East    Units  Estimated Accuracy
 JV2822;SPC MD       -   153,120.      381,200.      MT  (+/- 180 meters Scaled)
 JV2822
 JV2822_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ081242(NAD 83)
 JV2822
 JV2822                          SUPERSEDED SURVEY CONTROL
 JV2822
 JV2822  NGVD 29 (11/26/84)   77.848  (m)          255.41   (f) ADJUSTED    2 0
 JV2822
 JV2822.Superseded values are not recommended for survey control.
 JV2822
 JV2822.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2822.See file dsdata.pdf to determine how the superseded data were derived.
 JV2822
 JV2822_MARKER: Z = SEE DESCRIPTION
 JV2822_SETTING: 0 = UNSPECIFIED SETTING
 JV2822_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2822
 JV2822  HISTORY     - Date     Condition        Report By
 JV2822  HISTORY     - UNK      MONUMENTED       WRA
 JV2822  HISTORY     - 1965     GOOD             WSSC
 JV2822
 JV2822                          STATION DESCRIPTION
 JV2822
 JV2822'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2822'IN GLEN.
 JV2822'NO DESCRIPTION AVAILABLE - NEAR 3182 (WSSC) MARK TYPE UNSPECIFIED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0590 ***********************************************************************
 JV0590  DESIGNATION -  13.2 BORR
 JV0590  PID         -  JV0590
 JV0590  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0590  COUNTRY     -  US
 JV0590  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0590
 JV0590                         *CURRENT SURVEY CONTROL
 JV0590  ______________________________________________________________________
 JV0590* NAD 83(1986) POSITION- 39 16 34.     (N) 076 37 46.     (W)   SCALED
 JV0590* NAVD 88 ORTHO HEIGHT -     3.776 (meters)       12.39  (feet) ADJUSTED
 JV0590  ______________________________________________________________________
 JV0590  GEOID HEIGHT    -        -32.702 (meters)                     GEOID18
 JV0590  DYNAMIC HEIGHT  -          3.774 (meters)       12.38  (feet) COMP
 JV0590  MODELED GRAVITY -    980,103.6   (mgal)                       NAVD 88
 JV0590
 JV0590  VERT ORDER      -  FIRST     CLASS II
 JV0590
 JV0590.The horizontal coordinates were scaled from a map and have
 JV0590.an estimated accuracy of +/- 6 seconds.
 JV0590
 JV0590.The orthometric height was determined by differential leveling and
 JV0590.adjusted by the NATIONAL GEODETIC SURVEY
 JV0590.in June 1991.
 JV0590
 JV0590.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0590.GEOID18 height accuracy estimate available here.
 JV0590
 JV0590.Click photographs - Photos may exist for this station.
 JV0590
 JV0590.The dynamic height is computed by dividing the NAVD 88
 JV0590.geopotential number by the normal gravity value computed on the
 JV0590.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0590.degrees latitude (g = 980.6199 gals.).
 JV0590
 JV0590.The modeled gravity was interpolated from observed gravity values.
 JV0590
 JV0590;                    North         East    Units  Estimated Accuracy
 JV0590;SPC MD       -   178,720.      431,970.      MT  (+/- 180 meters Scaled)
 JV0590
 JV0590_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ594486(NAD 83)
 JV0590
 JV0590                          SUPERSEDED SURVEY CONTROL
 JV0590
 JV0590  NGVD 29 (11/26/84)    4.018  (m)           13.18   (f) ADJUSTED    1 2
 JV0590
 JV0590.Superseded values are not recommended for survey control.
 JV0590
 JV0590.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0590.See file dsdata.pdf to determine how the superseded data were derived.
 JV0590
 JV0590_MARKER: Z = SEE DESCRIPTION
 JV0590_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0590_SP_SET: FOUNDATION
 JV0590_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0590
 JV0590  HISTORY     - Date     Condition        Report By
 JV0590  HISTORY     - UNK      MONUMENTED       BORR
 JV0590  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0590
 JV0590                          STATION DESCRIPTION
 JV0590
 JV0590'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0590'AT BALTIMORE.
 JV0590'AT BALTIMORE, ON THE BALTIMORE AND OHIO RAILROAD, NEAR THE POINT
 JV0590'WHERE THE OLD WASHINGTON, BALTIMORE AND ANNAPOLIS ELECTRIC
 JV0590'RAILROAD CROSSES THE B. AND O. TRACKS, 50 FEET EAST OF THE
 JV0590'CENTER LINE OF THE NORTH-BOUND MAIN TRACK, IN THE CONCRETE
 JV0590'FOUNDATION OF THE SECOND STEEL PIER, AND ABOUT 2 FEET HIGHER
 JV0590'THAN THE TRACK.  A COPPER PLUG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0482 ***********************************************************************
 HU0482  DESIGNATION -  13.51
 HU0482  PID         -  HU0482
 HU0482  STATE/COUNTY-  MD/SOMERSET
 HU0482  COUNTRY     -  US
 HU0482  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0482
 HU0482                         *CURRENT SURVEY CONTROL
 HU0482  ______________________________________________________________________
 HU0482* NAD 83(1986) POSITION- 38 12 11.     (N) 075 41 26.     (W)   SCALED
 HU0482* NAVD 88 ORTHO HEIGHT -     3.722 (meters)       12.21  (feet) ADJUSTED
 HU0482  ______________________________________________________________________
 HU0482  GEOID HEIGHT    -        -36.004 (meters)                     GEOID18
 HU0482  DYNAMIC HEIGHT  -          3.719 (meters)       12.20  (feet) COMP
 HU0482  MODELED GRAVITY -    979,987.8   (mgal)                       NAVD 88
 HU0482
 HU0482  VERT ORDER      -  FIRST     CLASS II
 HU0482
 HU0482.The horizontal coordinates were scaled from a map and have
 HU0482.an estimated accuracy of +/- 6 seconds.
 HU0482
 HU0482.The orthometric height was determined by differential leveling and
 HU0482.adjusted by the NATIONAL GEODETIC SURVEY
 HU0482.in June 1991.
 HU0482
 HU0482.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0482.GEOID18 height accuracy estimate available here.
 HU0482
 HU0482.Click photographs - Photos may exist for this station.
 HU0482
 HU0482.The dynamic height is computed by dividing the NAVD 88
 HU0482.geopotential number by the normal gravity value computed on the
 HU0482.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0482.degrees latitude (g = 980.6199 gals.).
 HU0482
 HU0482.The modeled gravity was interpolated from observed gravity values.
 HU0482
 HU0482;                    North         East    Units  Estimated Accuracy
 HU0482;SPC MD       -    60,360.      514,690.      MT  (+/- 180 meters Scaled)
 HU0482
 HU0482_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH395285(NAD 83)
 HU0482
 HU0482                          SUPERSEDED SURVEY CONTROL
 HU0482
 HU0482  NGVD 29 (11/26/84)    3.977  (m)           13.05   (f) ADJUSTED    1 2
 HU0482
 HU0482.Superseded values are not recommended for survey control.
 HU0482
 HU0482.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0482.See file dsdata.pdf to determine how the superseded data were derived.
 HU0482
 HU0482_MARKER: Z = SEE DESCRIPTION
 HU0482_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0482_SP_SET: SUBWAY
 HU0482_MARK LOGO: PRR
 HU0482_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0482
 HU0482  HISTORY     - Date     Condition        Report By
 HU0482  HISTORY     - UNK      MONUMENTED       PRR
 HU0482  HISTORY     - 1963     MARK NOT FOUND   CGS
 HU0482  HISTORY     - 1972     MARK NOT FOUND   NGS
 HU0482
 HU0482                          STATION DESCRIPTION
 HU0482
 HU0482'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0482'AT PRINCESS ANNE.
 HU0482'AT PRINCESS ANNE, SOMERSET COUNTY, 880 FEET NORTH OF THE
 HU0482'PENNSYLVANIA RAILROAD STATION, 100 FEET SOUTHEAST OF THE PRINCESS
 HU0482'ANNE WATER WORKS.  THE MARK IS THE TOP OF THE SOUTHWEST CORNER OF
 HU0482'THE COPING ON THE WESTERN END OF SUBWAY 18.89.
 HU0482
 HU0482                          STATION RECOVERY (1972)
 HU0482
 HU0482'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0482'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1314 ***********************************************************************
 HV1314  DESIGNATION -  1305 WSSC
 HV1314  PID         -  HV1314
 HV1314  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1314  COUNTRY     -  US
 HV1314  USGS QUAD   -  ANACOSTIA (2016)
 HV1314
 HV1314                         *CURRENT SURVEY CONTROL
 HV1314  ______________________________________________________________________
 HV1314* NAD 83(1986) POSITION- 38 52 26.     (N) 076 56 01.     (W)   SCALED
 HV1314* NAVD 88 ORTHO HEIGHT -    86.49  (+/-2cm)      283.8   (feet) VERTCON3
 HV1314  ______________________________________________________________________
 HV1314  GEOID HEIGHT    -        -32.297 (meters)                     GEOID18
 HV1314  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1314
 HV1314.The horizontal coordinates were scaled from a map and have
 HV1314.an estimated accuracy of +/- 6 seconds.
 HV1314
 HV1314.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1314.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1314
 HV1314.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1314.GEOID18 height accuracy estimate available here.
 HV1314
 HV1314.The vertical order pertains to the NGVD 29 superseded value.
 HV1314
 HV1314.Click photographs - Photos may exist for this station.
 HV1314
 HV1314;                    North         East    Units  Estimated Accuracy
 HV1314;SPC MD       -   134,010.      405,760.      MT  (+/- 180 meters Scaled)
 HV1314
 HV1314_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ322045(NAD 83)
 HV1314
 HV1314                          SUPERSEDED SURVEY CONTROL
 HV1314
 HV1314  NGVD 29 (11/26/84)   86.729  (m)          284.54   (f) ADJUSTED    2 0
 HV1314
 HV1314.Superseded values are not recommended for survey control.
 HV1314
 HV1314.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1314.See file dsdata.pdf to determine how the superseded data were derived.
 HV1314
 HV1314_MARKER: B = BOLT
 HV1314_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1314_SP_SET: STEPS
 HV1314_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1314
 HV1314  HISTORY     - Date     Condition        Report By
 HV1314  HISTORY     - 1944     MONUMENTED       WSSC
 HV1314
 HV1314                          STATION DESCRIPTION
 HV1314
 HV1314'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1314'AT HUNTSVILLE.
 HV1314'AT THE MARYLAND-DISTRICT OF COLUMBIA LINE, AT THE INTERSECTION
 HV1314'OF SOUTHERN AVENUE AND BENNING-MARLBORO ROAD, ON THE SOUTH SIDE
 HV1314'OF SOUTHERN AVENUE, AT COHENS MEAT MARKET, AND IN THE EAST END
 HV1314'OF THE CONCRETE STEPS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1311 ***********************************************************************
 HV1311  DESIGNATION -  1307 WSSC
 HV1311  PID         -  HV1311
 HV1311  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1311  COUNTRY     -  US
 HV1311  USGS QUAD   -  ANACOSTIA (2016)
 HV1311
 HV1311                         *CURRENT SURVEY CONTROL
 HV1311  ______________________________________________________________________
 HV1311* NAD 83(1986) POSITION- 38 52 05.     (N) 076 56 22.     (W)   SCALED
 HV1311* NAVD 88 ORTHO HEIGHT -    92.05  (+/-2cm)      302.0   (feet) VERTCON3
 HV1311  ______________________________________________________________________
 HV1311  GEOID HEIGHT    -        -32.291 (meters)                     GEOID18
 HV1311  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1311
 HV1311.The horizontal coordinates were scaled from a map and have
 HV1311.an estimated accuracy of +/- 6 seconds.
 HV1311
 HV1311.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1311.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1311
 HV1311.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1311.GEOID18 height accuracy estimate available here.
 HV1311
 HV1311.The vertical order pertains to the NGVD 29 superseded value.
 HV1311
 HV1311.Click photographs - Photos may exist for this station.
 HV1311
 HV1311;                    North         East    Units  Estimated Accuracy
 HV1311;SPC MD       -   133,360.      405,260.      MT  (+/- 180 meters Scaled)
 HV1311
 HV1311_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ317039(NAD 83)
 HV1311
 HV1311                          SUPERSEDED SURVEY CONTROL
 HV1311
 HV1311  NGVD 29 (11/26/84)   92.293  (m)          302.80   (f) ADJUSTED    2 0
 HV1311
 HV1311.Superseded values are not recommended for survey control.
 HV1311
 HV1311.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1311.See file dsdata.pdf to determine how the superseded data were derived.
 HV1311
 HV1311_MARKER: B = BOLT
 HV1311_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1311_SP_SET: CONC PORCH OF HOUSE
 HV1311_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1311
 HV1311  HISTORY     - Date     Condition        Report By
 HV1311  HISTORY     - 1944     MONUMENTED       WSSC
 HV1311
 HV1311                          STATION DESCRIPTION
 HV1311
 HV1311'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1311'AT BOULEVARD HEIGHTS.
 HV1311'ON CLARK STREET, ABOUT 300 FEET EAST OF SOUTHERN AVENUE, 100 FEET
 HV1311'WEST OF BAKER STREET, AT A HOUSE ON THE NORTH SIDE OF THE STREET,
 HV1311'AND IN THE WEST END OF THE CONCRETE PORCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1313 ***********************************************************************
 HV1313  DESIGNATION -  1311 WSSC
 HV1313  PID         -  HV1313
 HV1313  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1313  COUNTRY     -  US
 HV1313  USGS QUAD   -  ANACOSTIA (2016)
 HV1313
 HV1313                         *CURRENT SURVEY CONTROL
 HV1313  ______________________________________________________________________
 HV1313* NAD 83(1986) POSITION- 38 52 20.     (N) 076 56 07.     (W)   SCALED
 HV1313* NAVD 88 ORTHO HEIGHT -    87.84  (+/-2cm)      288.2   (feet) VERTCON3
 HV1313  ______________________________________________________________________
 HV1313  GEOID HEIGHT    -        -32.295 (meters)                     GEOID18
 HV1313  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1313
 HV1313.The horizontal coordinates were scaled from a map and have
 HV1313.an estimated accuracy of +/- 6 seconds.
 HV1313
 HV1313.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1313.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1313
 HV1313.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1313.GEOID18 height accuracy estimate available here.
 HV1313
 HV1313.The vertical order pertains to the NGVD 29 superseded value.
 HV1313
 HV1313.Click photographs - Photos may exist for this station.
 HV1313
 HV1313;                    North         East    Units  Estimated Accuracy
 HV1313;SPC MD       -   133,820.      405,620.      MT  (+/- 180 meters Scaled)
 HV1313
 HV1313_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ321043(NAD 83)
 HV1313
 HV1313                          SUPERSEDED SURVEY CONTROL
 HV1313
 HV1313  NGVD 29 (11/26/84)   88.073  (m)          288.95   (f) ADJUSTED    2 0
 HV1313
 HV1313.Superseded values are not recommended for survey control.
 HV1313
 HV1313.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1313.See file dsdata.pdf to determine how the superseded data were derived.
 HV1313
 HV1313_MARKER: B = BOLT
 HV1313_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1313_SP_SET: BOUNDARY STONE
 HV1313_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1313
 HV1313  HISTORY     - Date     Condition        Report By
 HV1313  HISTORY     - 1944     MONUMENTED       WSSC
 HV1313
 HV1313                          STATION DESCRIPTION
 HV1313
 HV1313'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1313'AT BRADBURY HEIGHTS.
 HV1313'ON SOUTHERN AVENUE, AND IN THE SOUTHEAST SIDE OF BOUNDARY STONE
 HV1313'NO. 2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0671 ***********************************************************************
 JV0671  DESIGNATION -  1326 WSSC
 JV0671  PID         -  JV0671
 JV0671  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0671  COUNTRY     -  US
 JV0671  USGS QUAD   -  BELTSVILLE (2016)
 JV0671
 JV0671                         *CURRENT SURVEY CONTROL
 JV0671  ______________________________________________________________________
 JV0671* NAD 83(1986) POSITION- 39 02 41.     (N) 076 54 09.     (W)   SCALED
 JV0671* NAVD 88 ORTHO HEIGHT -    38.065 (meters)      124.88  (feet) ADJUSTED
 JV0671  ______________________________________________________________________
 JV0671  GEOID HEIGHT    -        -32.165 (meters)                     GEOID18
 JV0671  DYNAMIC HEIGHT  -         38.045 (meters)      124.82  (feet) COMP
 JV0671  MODELED GRAVITY -    980,103.7   (mgal)                       NAVD 88
 JV0671
 JV0671  VERT ORDER      -  FIRST     CLASS II
 JV0671
 JV0671.The horizontal coordinates were scaled from a map and have
 JV0671.an estimated accuracy of +/- 6 seconds.
 JV0671
 JV0671.The orthometric height was determined by differential leveling and
 JV0671.adjusted by the NATIONAL GEODETIC SURVEY
 JV0671.in June 1991.
 JV0671
 JV0671.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0671.GEOID18 height accuracy estimate available here.
 JV0671
 JV0671.Click photographs - Photos may exist for this station.
 JV0671
 JV0671.The dynamic height is computed by dividing the NAVD 88
 JV0671.geopotential number by the normal gravity value computed on the
 JV0671.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0671.degrees latitude (g = 980.6199 gals.).
 JV0671
 JV0671.The modeled gravity was interpolated from observed gravity values.
 JV0671
 JV0671;                    North         East    Units  Estimated Accuracy
 JV0671;SPC MD       -   152,980.      408,440.      MT  (+/- 180 meters Scaled)
 JV0671
 JV0671_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ353234(NAD 83)
 JV0671
 JV0671                          SUPERSEDED SURVEY CONTROL
 JV0671
 JV0671  NGVD 29 (11/26/84)   38.291  (m)          125.63   (f) ADJUSTED    1 2
 JV0671
 JV0671.Superseded values are not recommended for survey control.
 JV0671
 JV0671.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0671.See file dsdata.pdf to determine how the superseded data were derived.
 JV0671
 JV0671_MARKER: B = BOLT
 JV0671_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0671_SP_SET: BRIDGE RAILING
 JV0671_STAMPING: 1326 WSSC
 JV0671_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0671
 JV0671  HISTORY     - Date     Condition        Report By
 JV0671  HISTORY     - UNK      MONUMENTED       WSSC
 JV0671  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0671
 JV0671                          STATION DESCRIPTION
 JV0671
 JV0671'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0671'0.6 MI NE FROM BELTSVILLE.
 JV0671'0.6 MILE NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV0671'STATION AT BELTSVILLE, PRINCE GEORGES COUNTY, 0.4 MILE SOUTH
 JV0671'OF AMMENDALE, 80 FEET WEST OF THE SOUTH-BOUND TRACK, AT A
 JV0671'CONCRETE BRIDGE ON U.S. HIGHWAY 1, IN THE TOP OF THE SOUTH END
 JV0671'OF THE WEST BRIDGE RAILING, AND ABOUT 3 FEET LOWER THAN THE TOP
 JV0671'OF THE RAIL.  A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS
 JV0671'BOLT AND WASHER, STAMPED 1326 WSSC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1016 ***********************************************************************
 JV1016  DESIGNATION -  1334 WSSC
 JV1016  PID         -  JV1016
 JV1016  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1016  COUNTRY     -  US
 JV1016  USGS QUAD   -  BELTSVILLE (2016)
 JV1016
 JV1016                         *CURRENT SURVEY CONTROL
 JV1016  ______________________________________________________________________
 JV1016* NAD 83(1986) POSITION- 39 02 33.     (N) 076 54 28.     (W)   SCALED
 JV1016* NAVD 88 ORTHO HEIGHT -    51.34  (+/-2cm)      168.4   (feet) VERTCON3
 JV1016  ______________________________________________________________________
 JV1016  GEOID HEIGHT    -        -32.154 (meters)                     GEOID18
 JV1016  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1016
 JV1016.The horizontal coordinates were scaled from a map and have
 JV1016.an estimated accuracy of +/- 6 seconds.
 JV1016
 JV1016.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1016.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1016
 JV1016.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1016.GEOID18 height accuracy estimate available here.
 JV1016
 JV1016.The vertical order pertains to the NGVD 29 superseded value.
 JV1016
 JV1016.Click photographs - Photos may exist for this station.
 JV1016
 JV1016;                    North         East    Units  Estimated Accuracy
 JV1016;SPC MD       -   152,730.      407,980.      MT  (+/- 180 meters Scaled)
 JV1016
 JV1016_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ348232(NAD 83)
 JV1016
 JV1016                          SUPERSEDED SURVEY CONTROL
 JV1016
 JV1016  NGVD 29 (11/26/84)   51.559  (m)          169.16   (f) ADJUSTED    2 0
 JV1016
 JV1016.Superseded values are not recommended for survey control.
 JV1016
 JV1016.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1016.See file dsdata.pdf to determine how the superseded data were derived.
 JV1016
 JV1016_MARKER: DD = SURVEY DISK
 JV1016_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1016_SP_SET: PORCH
 JV1016_STAMPING: 1334
 JV1016_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1016
 JV1016  HISTORY     - Date     Condition        Report By
 JV1016  HISTORY     - UNK      MONUMENTED       WSSC
 JV1016  HISTORY     - 1939     GOOD             WSSC
 JV1016  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV1016
 JV1016                          STATION DESCRIPTION
 JV1016
 JV1016'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1016'0.5 MI N FROM BELTSVILLE.
 JV1016'ON ODEL ROAD, NEAR THE INTERSECTION OF RHODE ISLAND AVENUE
 JV1016'EXTENDED, AT A HOUSE ON THE SOUTH SIDE OF THE ROAD, AND IN THE
 JV1016'EAST END OF THE CONCRETE PORCH.
 JV1016
 JV1016                          STATION RECOVERY (1971)
 JV1016
 JV1016'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1016'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3537 ***********************************************************************
 JV3537  DESIGNATION -  1335
 JV3537  PID         -  JV3537
 JV3537  STATE/COUNTY-  MD/FREDERICK
 JV3537  COUNTRY     -  US
 JV3537  USGS QUAD   -  MYERSVILLE (2016)
 JV3537
 JV3537                         *CURRENT SURVEY CONTROL
 JV3537  ______________________________________________________________________
 JV3537* NAD 83(1986) POSITION- 39 36 32.     (N) 077 33 24.     (W)   SCALED
 JV3537* NAVD 88 ORTHO HEIGHT -   406.644 (meters)     1334.13  (feet) ADJUSTED
 JV3537  ______________________________________________________________________
 JV3537  GEOID HEIGHT    -        -33.427 (meters)                     GEOID18
 JV3537  DYNAMIC HEIGHT  -        406.400 (meters)     1333.33  (feet) COMP
 JV3537  MODELED GRAVITY -    980,014.3   (mgal)                       NAVD 88
 JV3537
 JV3537  VERT ORDER      -  SECOND    CLASS 0
 JV3537
 JV3537.The horizontal coordinates were scaled from a map and have
 JV3537.an estimated accuracy of +/- 6 seconds.
 JV3537
 JV3537.The orthometric height was determined by differential leveling and
 JV3537.adjusted by the NATIONAL GEODETIC SURVEY
 JV3537.in June 1991.
 JV3537
 JV3537.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3537.GEOID18 height accuracy estimate available here.
 JV3537
 JV3537.Click photographs - Photos may exist for this station.
 JV3537
 JV3537.The dynamic height is computed by dividing the NAVD 88
 JV3537.geopotential number by the normal gravity value computed on the
 JV3537.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3537.degrees latitude (g = 980.6199 gals.).
 JV3537
 JV3537.The modeled gravity was interpolated from observed gravity values.
 JV3537
 JV3537;                    North         East    Units  Estimated Accuracy
 JV3537;SPC MD       -   215,750.      352,190.      MT  (+/- 180 meters Scaled)
 JV3537
 JV3537_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ805874(NAD 83)
 JV3537
 JV3537                          SUPERSEDED SURVEY CONTROL
 JV3537
 JV3537  NGVD 29 (11/26/84)  406.825  (m)         1334.73   (f) ADJUSTED    2 0
 JV3537
 JV3537.Superseded values are not recommended for survey control.
 JV3537
 JV3537.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3537.See file dsdata.pdf to determine how the superseded data were derived.
 JV3537
 JV3537_MARKER: DD = SURVEY DISK
 JV3537_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3537_SP_SET: FOUNDATION
 JV3537_STAMPING: 1335 MD
 JV3537_MARK LOGO: USGS
 JV3537_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3537
 JV3537  HISTORY     - Date     Condition        Report By
 JV3537  HISTORY     - 1908     MONUMENTED       USGS
 JV3537  HISTORY     - 1942     GOOD             CGS
 JV3537  HISTORY     - 20080326 MARK NOT FOUND   GEOCAC
 JV3537
 JV3537                          STATION DESCRIPTION
 JV3537
 JV3537'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3537'2.6 MI NW FROM WOLFSVILLE.
 JV3537'2.6 MILES NORTHWEST ALONG STATE HIGHWAY 17 FROM THE ROAD INTERSECTION
 JV3537'AT WOLFSVILLE, FREDERICK COUNTY, AT THE SENSENBAUGH SCHOOLHOUSE
 JV3537'(USED IN 1942 AS A DWELLING HOUSE), 144 FEET WEST OF THE CENTER
 JV3537'LINE OF THE HIGHWAY, IN THE FACE OF THE FOUNDATION OF THE HOUSE
 JV3537'AT THE SOUTHEAST CORNER, AND 1.5 FEET ABOVE THE GROUND.  A UNITED
 JV3537'STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 1335 MD AND
 JV3537'SET VERTICALLY.
 JV3537
 JV3537                          STATION RECOVERY (2008)
 JV3537
 JV3537'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3537'NEIGHBORS THINK THE SCHOOLHOUSE WAS RAZED.  A ONE STORY DWELLING CAN
 JV3537'BE FOUND ABOUT 100 FEET SOUTH OF THE COORDINATES.  IT IS SIDED AND NO
 JV3537'MARK IS VISIBLE ALONG THE EXPOSED FOUNDATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0680 ***********************************************************************
 JV0680  DESIGNATION -  1357 WSSC
 JV0680  PID         -  JV0680
 JV0680  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0680  COUNTRY     -  US
 JV0680  USGS QUAD   -  BELTSVILLE (2016)
 JV0680
 JV0680                         *CURRENT SURVEY CONTROL
 JV0680  ______________________________________________________________________
 JV0680* NAD 83(1986) POSITION- 39 01 23.     (N) 076 54 24.     (W)   SCALED
 JV0680* NAVD 88 ORTHO HEIGHT -    28.829 (meters)       94.58  (feet) ADJUSTED
 JV0680  ______________________________________________________________________
 JV0680  GEOID HEIGHT    -        -32.170 (meters)                     GEOID18
 JV0680  DYNAMIC HEIGHT  -         28.814 (meters)       94.53  (feet) COMP
 JV0680  MODELED GRAVITY -    980,102.2   (mgal)                       NAVD 88
 JV0680
 JV0680  VERT ORDER      -  SECOND    CLASS 0
 JV0680
 JV0680.The horizontal coordinates were scaled from a map and have
 JV0680.an estimated accuracy of +/- 6 seconds.
 JV0680
 JV0680.The orthometric height was determined by differential leveling and
 JV0680.adjusted by the NATIONAL GEODETIC SURVEY
 JV0680.in June 1991.
 JV0680
 JV0680.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0680.GEOID18 height accuracy estimate available here.
 JV0680
 JV0680.Click photographs - Photos may exist for this station.
 JV0680
 JV0680.The dynamic height is computed by dividing the NAVD 88
 JV0680.geopotential number by the normal gravity value computed on the
 JV0680.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0680.degrees latitude (g = 980.6199 gals.).
 JV0680
 JV0680.The modeled gravity was interpolated from observed gravity values.
 JV0680
 JV0680;                    North         East    Units  Estimated Accuracy
 JV0680;SPC MD       -   150,570.      408,080.      MT  (+/- 180 meters Scaled)
 JV0680
 JV0680_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ349210(NAD 83)
 JV0680
 JV0680                          SUPERSEDED SURVEY CONTROL
 JV0680
 JV0680  NGVD 29 (??/??/92)   29.051  (m)           95.31   (f) ADJ UNCH    2 0
 JV0680
 JV0680.Superseded values are not recommended for survey control.
 JV0680
 JV0680.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0680.See file dsdata.pdf to determine how the superseded data were derived.
 JV0680
 JV0680_MARKER: B = BOLT
 JV0680_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0680_SP_SET: GRANITE MILEPOST
 JV0680_STAMPING: 1357 WSSC
 JV0680_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0680
 JV0680  HISTORY     - Date     Condition        Report By
 JV0680  HISTORY     - UNK      MONUMENTED       WSSC
 JV0680  HISTORY     - 1933     GOOD             CGS
 JV0680
 JV0680                          STATION DESCRIPTION
 JV0680
 JV0680'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 JV0680'0.9 MI S FROM BELTSVILLE.
 JV0680'ABOUT 0.9 MILE SOUTH ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0680'FROM BELTSVILLE, PRINCE GEORGES COUNTY, ABOUT 180 FEET NORTH
 JV0680'OF THE STATION AT SUNNYSIDE, IN THE NORTHWEST SIDE OF OLD
 JV0680'GRANITE MILEPOST BALTIMORE 28, 12 FEET WEST OF THE SOUTH-BOUND
 JV0680'TRACK, AND 2 FEET LOWER THAN THE RAIL.  A WASHINGTON SUBURBAN
 JV0680'SANITARY DISTRICT BOLT AND WASHER, STAMPED 1357 WSSC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0681 ***********************************************************************
 JV0681  DESIGNATION -  1357 WSSC RESET WSSC
 JV0681  PID         -  JV0681
 JV0681  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0681  COUNTRY     -  US
 JV0681  USGS QUAD   -  BELTSVILLE (2016)
 JV0681
 JV0681                         *CURRENT SURVEY CONTROL
 JV0681  ______________________________________________________________________
 JV0681* NAD 83(1986) POSITION- 39 01 24.6    (N) 076 54 25.1    (W)   HD_HELD2
 JV0681* NAVD 88 ORTHO HEIGHT -    28.83  (+/-2cm)       94.6   (feet) VERTCON3
 JV0681  ______________________________________________________________________
 JV0681  GEOID HEIGHT    -        -32.169 (meters)                     GEOID18
 JV0681  VERT ORDER      -  ? (See Below)
 JV0681
 JV0681.The horizontal coordinates were established by autonomous hand held GPS
 JV0681.observations and have an estimated accuracy of +/- 10 meters.
 JV0681
 JV0681.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV0681.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV0681
 JV0681.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0681.GEOID18 height accuracy estimate available here.
 JV0681
 JV0681.The vertical order pertains to the NGVD 29 superseded value.
 JV0681
 JV0681.Click photographs - Photos may exist for this station.
 JV0681
 JV0681;                    North         East    Units  Estimated Accuracy
 JV0681;SPC MD       -   150,619.      408,056.      MT  (+/- 10 meters HH2 GPS)
 JV0681
 JV0681_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3492021114(NAD 83)
 JV0681
 JV0681                          SUPERSEDED SURVEY CONTROL
 JV0681
 JV0681  NGVD 29 (11/26/84)   29.051  (m)           95.31   (f) ADJUSTED       
 JV0681
 JV0681.Superseded values are not recommended for survey control.
 JV0681
 JV0681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0681.See file dsdata.pdf to determine how the superseded data were derived.
 JV0681
 JV0681_MARKER: Z = SEE DESCRIPTION
 JV0681_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0681_SP_SET: MILEPOST
 JV0681_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0681
 JV0681  HISTORY     - Date     Condition        Report By
 JV0681  HISTORY     - UNK      MONUMENTED       WSSC
 JV0681  HISTORY     - 1971     GOOD             NGS
 JV0681  HISTORY     - 20070624 GOOD             GEOCAC
 JV0681
 JV0681                          STATION DESCRIPTION
 JV0681
 JV0681'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0681'0.9 MI S FROM BELTSVILLE.
 JV0681'ABOUT 0.1 MILE EAST ALONG STATE HIGHWAY 212 FROM THE INTERSECTION
 JV0681'OF U.S. HIGHWAY 1 AT BELTVILLE, THENCE 0.8 MILE SOUTH ALONG THE
 JV0681'BALTIMORE AND OHIO RAILROAD, 150 FEET NORTH OF THE CENTER OF
 JV0681'THE CROSSING OF THE RAILROAD AND SUNNYSIDE AVENUE, 21 FEET
 JV0681'EAST OF THE CENTER LINE OF THE EAST TRACK, ABOUT 4 FEET ABOVE
 JV0681'THE LEVEL OF THE TRACK, AND SET IN THE TOP OF A CONCRETE
 JV0681'MILEPOST WHICH IS NUMBERED BALTI. 28 WASH. 12.
 JV0681
 JV0681                          STATION RECOVERY (2007)
 JV0681
 JV0681'RECOVERY NOTE BY GEOCACHING 2007 (APC)
 JV0681'MILEPOST FOUND AT THE INDICATED LOCATION. NO MARKER WAS OBSERVED IN
 JV0681'THE TOP AS DESCRIBED IN 1971. ON THE SOUTHEAST FACE OF THE MILEPOST A
 JV0681'BOLT WITH A WASHER STAMPED 1357 WERE OBSERVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1342 ***********************************************************************
 HV1342  DESIGNATION -  1359 WSSC
 HV1342  PID         -  HV1342
 HV1342  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1342  COUNTRY     -  US
 HV1342  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1342
 HV1342                         *CURRENT SURVEY CONTROL
 HV1342  ______________________________________________________________________
 HV1342* NAD 83(1986) POSITION- 38 55 47.     (N) 076 55 53.     (W)   SCALED
 HV1342* NAVD 88 ORTHO HEIGHT -    21.23  (+/-2cm)       69.7   (feet) VERTCON3
 HV1342  ______________________________________________________________________
 HV1342  GEOID HEIGHT    -        -32.222 (meters)                     GEOID18
 HV1342  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1342
 HV1342.The horizontal coordinates were scaled from a map and have
 HV1342.an estimated accuracy of +/- 6 seconds.
 HV1342
 HV1342.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1342.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1342
 HV1342.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1342.GEOID18 height accuracy estimate available here.
 HV1342
 HV1342.The vertical order pertains to the NGVD 29 superseded value.
 HV1342
 HV1342.Click photographs - Photos may exist for this station.
 HV1342
 HV1342;                    North         East    Units  Estimated Accuracy
 HV1342;SPC MD       -   140,210.      405,950.      MT  (+/- 180 meters Scaled)
 HV1342
 HV1342_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ325107(NAD 83)
 HV1342
 HV1342                          SUPERSEDED SURVEY CONTROL
 HV1342
 HV1342  NGVD 29 (11/26/84)   21.461  (m)           70.41   (f) ADJUSTED    2 0
 HV1342
 HV1342.Superseded values are not recommended for survey control.
 HV1342
 HV1342.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1342.See file dsdata.pdf to determine how the superseded data were derived.
 HV1342
 HV1342_MARKER: B = BOLT
 HV1342_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1342_SP_SET: CULVERT
 HV1342_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1342
 HV1342  HISTORY     - Date     Condition        Report By
 HV1342  HISTORY     - UNK      MONUMENTED       WSSC
 HV1342  HISTORY     - 1944     GOOD             WSSC
 HV1342
 HV1342                          STATION DESCRIPTION
 HV1342
 HV1342'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1342'1.6 MI NE FROM MD DC LINE.
 HV1342'ON KENILWORTH AVENUE, 0.4 MILE SOUTH OF LANDOVER ROAD, ON THE
 HV1342'EAST SIDE OF THE ROAD, NEAR P.E.P. CO. POLE 85059, AT A CULVERT
 HV1342'UNDER THE ROAD, AND IN THE CENTER OF THE TOP OF THE EAST HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1342 ***********************************************************************
 JU1342  DESIGNATION -  136.285
 JU1342  PID         -  JU1342
 JU1342  STATE/COUNTY-  MD/CECIL
 JU1342  COUNTRY     -  US
 JU1342  USGS QUAD   -  EARLEVILLE (2016)
 JU1342
 JU1342                         *CURRENT SURVEY CONTROL
 JU1342  ______________________________________________________________________
 JU1342* NAD 83(1986) POSITION- 39 29 02.     (N) 075 58 55.     (W)   SCALED
 JU1342* NAVD 88 ORTHO HEIGHT -    41.214 (meters)      135.22  (feet) ADJUSTED
 JU1342  ______________________________________________________________________
 JU1342  GEOID HEIGHT    -        -33.321 (meters)                     GEOID18
 JU1342  DYNAMIC HEIGHT  -         41.193 (meters)      135.15  (feet) COMP
 JU1342  MODELED GRAVITY -    980,121.8   (mgal)                       NAVD 88
 JU1342
 JU1342  VERT ORDER      -  SECOND    CLASS I
 JU1342
 JU1342.The horizontal coordinates were scaled from a map and have
 JU1342.an estimated accuracy of +/- 6 seconds.
 JU1342
 JU1342.The orthometric height was determined by differential leveling and
 JU1342.adjusted by the NATIONAL GEODETIC SURVEY
 JU1342.in June 1991.
 JU1342
 JU1342.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1342.GEOID18 height accuracy estimate available here.
 JU1342
 JU1342.Click photographs - Photos may exist for this station.
 JU1342
 JU1342.The dynamic height is computed by dividing the NAVD 88
 JU1342.geopotential number by the normal gravity value computed on the
 JU1342.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1342.degrees latitude (g = 980.6199 gals.).
 JU1342
 JU1342.The modeled gravity was interpolated from observed gravity values.
 JU1342
 JU1342;                    North         East    Units  Estimated Accuracy
 JU1342;SPC MD       -   202,220.      487,590.      MT  (+/- 180 meters Scaled)
 JU1342
 JU1342_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ155709(NAD 83)
 JU1342
 JU1342                          SUPERSEDED SURVEY CONTROL
 JU1342
 JU1342  NGVD 29 (11/26/84)   41.445  (m)          135.97   (f) ADJUSTED    2 0
 JU1342
 JU1342.Superseded values are not recommended for survey control.
 JU1342
 JU1342.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1342.See file dsdata.pdf to determine how the superseded data were derived.
 JU1342
 JU1342_MARKER: DD = SURVEY DISK
 JU1342_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1342_STAMPING: BM 136.285 MD
 JU1342_MARK LOGO: NPS
 JU1342_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU1342_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1342+STABILITY: SURFACE MOTION
 JU1342_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1342+SATELLITE: SATELLITE OBSERVATIONS - February 06, 2001
 JU1342
 JU1342  HISTORY     - Date     Condition        Report By
 JU1342  HISTORY     - UNK      MONUMENTED       NPS
 JU1342  HISTORY     - 1964     GOOD             CGS
 JU1342  HISTORY     - 1990     GOOD             USPSQD
 JU1342  HISTORY     - 20010206 GOOD             MDSHA
 JU1342
 JU1342                          STATION DESCRIPTION
 JU1342
 JU1342'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1342'2.7 MI SW FROM ELK NECK.
 JU1342'ABOUT 2.7 MILES SOUTHWEST ALONG THE MACADAM ROAD FROM ELK NECK,
 JU1342'200 FEET NORTH OF A SIDE ROAD TO THE SOUTHEAST, 97 FEET WEST OF
 JU1342'THE CENTERLINE OF THE MAIN ROAD, 70 FEET NORTHWEST OF POWER LINE
 JU1342'POLE NO. 276 AND 1 FOOT EAST OF A METAL WITNESS POST AND SIGN.
 JU1342'IN THE DENSE WOODS, A NATIONAL PARK SERVICE BRONZE DISK SET IN THE
 JU1342'TOP OF A CONCRETE POST PROJECTING ABOUT 12 INCHES.
 JU1342
 JU1342                          STATION RECOVERY (1990)
 JU1342
 JU1342'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1342'RECOVERED IN GOOD CONDITION.
 JU1342
 JU1342                          STATION RECOVERY (2001)
 JU1342
 JU1342'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JU1342'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2131 ***********************************************************************
 JV2131  DESIGNATION -  137 BORR
 JV2131  PID         -  JV2131
 JV2131  STATE/COUNTY-  MD/FREDERICK
 JV2131  COUNTRY     -  US
 JV2131  USGS QUAD   -  DAMASCUS (2016)
 JV2131
 JV2131                         *CURRENT SURVEY CONTROL
 JV2131  ______________________________________________________________________
 JV2131* NAD 83(2011) POSITION- 39 21 55.23580(N) 077 10 50.31799(W)   ADJUSTED
 JV2131* NAD 83(2011) ELLIP HT-   168.176 (meters)        (06/27/12)   ADJUSTED
 JV2131* NAD 83(2011) EPOCH   -  2010.00
 JV2131* NAVD 88 ORTHO HEIGHT -   200.148 (meters)      656.65  (feet) ADJUSTED
 JV2131  ______________________________________________________________________
 JV2131  GEOID HEIGHT    -        -31.966 (meters)                     GEOID18
 JV2131  NAD 83(2011) X  -  1,095,595.833 (meters)                     COMP
 JV2131  NAD 83(2011) Y  - -4,814,753.622 (meters)                     COMP
 JV2131  NAD 83(2011) Z  -  4,023,863.163 (meters)                     COMP
 JV2131  LAPLACE CORR    -          3.87  (seconds)                    DEFLEC18
 JV2131  DYNAMIC HEIGHT  -        200.043 (meters)      656.31  (feet) COMP
 JV2131  MODELED GRAVITY -    980,095.9   (mgal)                       NAVD 88
 JV2131
 JV2131  VERT ORDER      -  FIRST     CLASS II
 JV2131
 JV2131  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV2131  Standards:
 JV2131         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV2131            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV2131  -------------------------------------------------------------------
 JV2131  NETWORK    1.62   1.86           0.70   0.62   0.95      0.12209355
 JV2131  -------------------------------------------------------------------
 JV2131  Click here for local accuracies and other accuracy information.
 JV2131
 JV2131.The horizontal coordinates were established by GPS observations
 JV2131.and adjusted by the National Geodetic Survey in June 2012.
 JV2131
 JV2131.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV2131.been affixed to the stable North American tectonic plate. See 
 JV2131.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV2131
 JV2131.The horizontal coordinates are valid at the epoch date displayed above
 JV2131.which is a decimal equivalence of Year/Month/Day.
 JV2131
 JV2131.The orthometric height was determined by differential leveling and
 JV2131.adjusted by the NATIONAL GEODETIC SURVEY
 JV2131.in June 1991.
 JV2131
 JV2131.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2131.GEOID18 height accuracy estimate available here.
 JV2131
 JV2131.Click photographs - Photos may exist for this station.
 JV2131
 JV2131.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV2131
 JV2131.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2131
 JV2131.The ellipsoidal height was determined by GPS observations
 JV2131.and is referenced to NAD 83.
 JV2131
 JV2131.The dynamic height is computed by dividing the NAVD 88
 JV2131.geopotential number by the normal gravity value computed on the
 JV2131.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2131.degrees latitude (g = 980.6199 gals.).
 JV2131
 JV2131.The modeled gravity was interpolated from observed gravity values.
 JV2131
 JV2131. The following values were computed from the NAD 83(2011) position.
 JV2131
 JV2131;                    North         East     Units Scale Factor Converg.
 JV2131;SPC MD       -   188,580.260   384,432.487   MT  0.99998629   -0 06 48.2
 JV2131;SPC MD       -   618,700.40  1,261,258.92   sFT  0.99998629   -0 06 48.2
 JV2131;UTM  18      - 4,359,588.437   312,140.163   MT  1.00003454   -1 23 00.6
 JV2131
 JV2131!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2131!SPC MD       -   0.99997362  x   0.99998629  =   0.99995991
 JV2131!UTM  18      -   0.99997362  x   1.00003454  =   1.00000815
 JV2131
 JV2131_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1214059588(NAD 83)
 JV2131
 JV2131                          SUPERSEDED SURVEY CONTROL
 JV2131
 JV2131  NAD 83(2007)-  39 21 55.23600(N)    077 10 50.31862(W) AD(2002.00) 0
 JV2131  ELLIP H (02/10/07)  168.197  (m)                       GP(2002.00)    
 JV2131  ELLIP H (08/30/02)  168.179  (m)                       GP(       ) 4 2
 JV2131  NAD 83(1991)-  39 21 55.23639(N)    077 10 50.31920(W) AD(       ) 1
 JV2131  ELLIP H (02/09/94)  168.138  (m)                       GP(       ) 4 1
 JV2131  NAVD 88             200.15   (m)          656.7    (f) LEVELING    3  
 JV2131  NGVD 29 (11/26/84)  200.348  (m)          657.31   (f) ADJUSTED    1 2
 JV2131
 JV2131.Superseded values are not recommended for survey control.
 JV2131
 JV2131.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2131.See file dsdata.pdf to determine how the superseded data were derived.
 JV2131
 JV2131_MARKER: B = BOLT
 JV2131_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2131_SP_SET: SET IN A LIGHT STRUCTURE
 JV2131_MARK LOGO: BORR
 JV2131_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV2131_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2131_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2131+SATELLITE: SATELLITE OBSERVATIONS - April 03, 1993
 JV2131
 JV2131  HISTORY     - Date     Condition        Report By
 JV2131  HISTORY     - 1903     MONUMENTED       BORR
 JV2131  HISTORY     - 1941     GOOD             CGS
 JV2131  HISTORY     - 1969     MARK NOT FOUND   CGS
 JV2131  HISTORY     - 19930403 GOOD             GREOMA
 JV2131  HISTORY     - 20011113 POOR             DMW
 JV2131
 JV2131                          STATION DESCRIPTION
 JV2131
 JV2131'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2131'1.8 MI W FROM MOUNT AIRY.
 JV2131'IN FREDERICK COUNTY, ABOUT 1.8 MILES WEST ALONG THE BALTIMORE
 JV2131'AND OHIO RAILROAD FROM THE STATION AT MOUNT AIRY, CARROLL COUNTY,
 JV2131'ABOUT 1/2 MILE WEST OF THE WEST END OF THE MT. AIRY TUNNEL,
 JV2131'ABOUT 0.1 MILE EAST OF MOUNT AIRY JUNCTION, AT CULVERT 29 E,
 JV2131'IN THE TOP OF THE SOUTH COPING, 0.9 FOOT WEST OF THE EAST
 JV2131'END, AND 11.3 FEET SOUTH OF THE SOUTH RAIL OF THE EAST-BOUND
 JV2131'TRACK.  A COPPER BOLT.
 JV2131
 JV2131                          STATION RECOVERY (1969)
 JV2131
 JV2131'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969
 JV2131'MARK NOT FOUND.
 JV2131
 JV2131                          STATION RECOVERY (1993)
 JV2131
 JV2131'RECOVERY NOTE BY GREENHORNE-OMARA 1993
 JV2131'RECOVERED IN GOOD CONDITION.
 JV2131
 JV2131                          STATION RECOVERY (2001)
 JV2131
 JV2131'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV2131'RECOVERY NOTE BY DMW 2001.
 JV2131'STATION RECOVERED BUT THE HEAD OF THE COPPER BOLT HAS BEEN SAWED OFF.
 JV2131'
 JV2131'ONLY THE STEM REMAINS. STATION ONLY GPS OBSERVABLE DURING WINTER
 JV2131'CONDITIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1445 ***********************************************************************
 HV1445  DESIGNATION -  1372 WSSC
 HV1445  PID         -  HV1445
 HV1445  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1445  COUNTRY     -  US
 HV1445  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1445
 HV1445                         *CURRENT SURVEY CONTROL
 HV1445  ______________________________________________________________________
 HV1445* NAD 83(1986) POSITION- 38 59 05.     (N) 076 57 51.     (W)   SCALED
 HV1445* NAVD 88 ORTHO HEIGHT -    20.791 (meters)       68.21  (feet) ADJUSTED
 HV1445  ______________________________________________________________________
 HV1445  GEOID HEIGHT    -        -32.078 (meters)                     GEOID18
 HV1445  DYNAMIC HEIGHT  -         20.780 (meters)       68.18  (feet) COMP
 HV1445  MODELED GRAVITY -    980,104.9   (mgal)                       NAVD 88
 HV1445
 HV1445  VERT ORDER      -  SECOND    CLASS I
 HV1445
 HV1445.The horizontal coordinates were scaled from a map and have
 HV1445.an estimated accuracy of +/- 6 seconds.
 HV1445
 HV1445.The orthometric height was determined by differential leveling and
 HV1445.adjusted by the NATIONAL GEODETIC SURVEY
 HV1445.in June 1991.
 HV1445
 HV1445.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1445.GEOID18 height accuracy estimate available here.
 HV1445
 HV1445.Click photographs - Photos may exist for this station.
 HV1445
 HV1445.The dynamic height is computed by dividing the NAVD 88
 HV1445.geopotential number by the normal gravity value computed on the
 HV1445.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1445.degrees latitude (g = 980.6199 gals.).
 HV1445
 HV1445.The modeled gravity was interpolated from observed gravity values.
 HV1445
 HV1445;                    North         East    Units  Estimated Accuracy
 HV1445;SPC MD       -   146,310.      403,110.      MT  (+/- 180 meters Scaled)
 HV1445
 HV1445_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ298169(NAD 83)
 HV1445
 HV1445                          SUPERSEDED SURVEY CONTROL
 HV1445
 HV1445  NGVD 29 (11/26/84)   21.013  (m)           68.94   (f) ADJUSTED    2 1
 HV1445
 HV1445.Superseded values are not recommended for survey control.
 HV1445
 HV1445.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1445.See file dsdata.pdf to determine how the superseded data were derived.
 HV1445
 HV1445_MARKER: Z = SEE DESCRIPTION
 HV1445_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1445_SP_SET: CURB
 HV1445_STAMPING: WSSC 1372
 HV1445_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1445
 HV1445  HISTORY     - Date     Condition        Report By
 HV1445  HISTORY     - UNK      MONUMENTED       WSSC
 HV1445  HISTORY     - 1952     GOOD             CGS
 HV1445
 HV1445                          STATION DESCRIPTION
 HV1445
 HV1445'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV1445'1.5 MI W FROM COLLEGE PARK.
 HV1445'ABOUT 1-1/2 MILES WEST OF COLLEGE PARK, PRINCE GEORGES COUNTY,
 HV1445'AT THE BRIDGE CARRYING UNIVERSITY LANE (STATE HIGHWAY 193) OVER
 HV1445'NORTHWEST BRANCH, 1.7 FEET EAST OF THE WEST END OF THE SOUTH
 HV1445'CURB, AND ON TOP OF THE CURB.  A WASHINGTON SUBURBAN SANITARY
 HV1445'DISTRICT LAG SCREW AND WASHER, STAMPED WSSC BM 1372.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1415 ***********************************************************************
 HV1415  DESIGNATION -  1374 WSSC
 HV1415  PID         -  HV1415
 HV1415  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1415  COUNTRY     -  US
 HV1415  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1415
 HV1415                         *CURRENT SURVEY CONTROL
 HV1415  ______________________________________________________________________
 HV1415* NAD 83(1986) POSITION- 38 59 00.     (N) 076 58 46.     (W)   SCALED
 HV1415* NAVD 88 ORTHO HEIGHT -    44.395 (meters)      145.65  (feet) ADJUSTED
 HV1415  ______________________________________________________________________
 HV1415  GEOID HEIGHT    -        -32.053 (meters)                     GEOID18
 HV1415  DYNAMIC HEIGHT  -         44.371 (meters)      145.57  (feet) COMP
 HV1415  MODELED GRAVITY -    980,102.0   (mgal)                       NAVD 88
 HV1415
 HV1415  VERT ORDER      -  SECOND    CLASS 0
 HV1415
 HV1415.The horizontal coordinates were scaled from a map and have
 HV1415.an estimated accuracy of +/- 6 seconds.
 HV1415
 HV1415.The orthometric height was determined by differential leveling and
 HV1415.adjusted by the NATIONAL GEODETIC SURVEY
 HV1415.in June 1991.
 HV1415
 HV1415.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1415.GEOID18 height accuracy estimate available here.
 HV1415
 HV1415.Click photographs - Photos may exist for this station.
 HV1415
 HV1415.The dynamic height is computed by dividing the NAVD 88
 HV1415.geopotential number by the normal gravity value computed on the
 HV1415.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1415.degrees latitude (g = 980.6199 gals.).
 HV1415
 HV1415.The modeled gravity was interpolated from observed gravity values.
 HV1415
 HV1415;                    North         East    Units  Estimated Accuracy
 HV1415;SPC MD       -   146,160.      401,780.      MT  (+/- 180 meters Scaled)
 HV1415
 HV1415_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ285167(NAD 83)
 HV1415
 HV1415                          SUPERSEDED SURVEY CONTROL
 HV1415
 HV1415  NGVD 29 (11/26/84)   44.615  (m)          146.37   (f) ADJUSTED    2 0
 HV1415
 HV1415.Superseded values are not recommended for survey control.
 HV1415
 HV1415.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1415.See file dsdata.pdf to determine how the superseded data were derived.
 HV1415
 HV1415_MARKER: Z = SEE DESCRIPTION
 HV1415_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1415_SP_SET: CULVERT
 HV1415_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1415
 HV1415  HISTORY     - Date     Condition        Report By
 HV1415  HISTORY     - UNK      MONUMENTED       WSSC
 HV1415  HISTORY     - 1951     GOOD             CGS
 HV1415
 HV1415                          STATION DESCRIPTION
 HV1415
 HV1415'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1415'2.5 MI W FROM COLLEGE PARK.
 HV1415'ABOUT 2-1/2 MILES WEST OF COLLEGE PARK, PRINCE GEORGES COUNTY,
 HV1415'IN THE SOUTHWEST ANGLE OF THE INTERSECTION OF UNIVERSITY LANE
 HV1415'(STATE HIGHWAY 193) AND RIGGS ROAD (STATE HIGHWAY 212), WEST
 HV1415'OF RIGGS ROAD, ON THE SOUTHWEST SIDE OF UNIVERSITY LANE, AND IN
 HV1415'THE MIDDLE OF THE TOP OF THE SOUTHWEST HEAD WALL OF A CULVERT
 HV1415'UNDER UNIVERSITY LANE.  A WASHINGTON SUBURBAN SANITARY
 HV1415'DISTRICT LAG SCREW AND WASHER, FROM WHICH THE HEAD OF THE LAG
 HV1415'SCREW AND THE WASHER HAVE BEEN REMOVED.  THE 1951 LEVELING WAS
 HV1415'RUN TO THE HIGHEST POINT OF THE REMAINING PORTION OF THE LAG
 HV1415'SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8503 ***********************************************************************
 AI8503  DESIGNATION -  13IC
 AI8503  PID         -  AI8503
 AI8503  STATE/COUNTY-  MD/HOWARD
 AI8503  COUNTRY     -  US
 AI8503  USGS QUAD   -  WOODBINE (2016)
 AI8503
 AI8503                         *CURRENT SURVEY CONTROL
 AI8503  ______________________________________________________________________
 AI8503* NAD 83(2011) POSITION- 39 17 36.95927(N) 077 04 10.49487(W)   ADJUSTED
 AI8503* NAD 83(2011) ELLIP HT-   134.549 (meters)        (06/27/12)   ADJUSTED
 AI8503* NAD 83(2011) EPOCH   -  2010.00
 AI8503* NAVD 88 ORTHO HEIGHT -   166.4   (meters)      546.    (feet) GPS OBS
 AI8503  ______________________________________________________________________
 AI8503  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8503  GEOID HEIGHT    -        -31.824 (meters)                     GEOID99
 AI8503  GEOID HEIGHT    -        -31.839 (meters)                     GEOID18
 AI8503  NAD 83(2011) X  -  1,106,050.482 (meters)                     COMP
 AI8503  NAD 83(2011) Y  - -4,817,515.741 (meters)                     COMP
 AI8503  NAD 83(2011) Z  -  4,017,680.595 (meters)                     COMP
 AI8503  LAPLACE CORR    -         -1.24  (seconds)                    DEFLEC18
 AI8503
 AI8503  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8503  Standards:
 AI8503         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8503            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8503  -------------------------------------------------------------------
 AI8503  NETWORK    0.92   1.20           0.42   0.32   0.61     -0.04502488
 AI8503  -------------------------------------------------------------------
 AI8503  Click here for local accuracies and other accuracy information.
 AI8503
 AI8503.The horizontal coordinates were established by GPS observations
 AI8503.and adjusted by the National Geodetic Survey in June 2012.
 AI8503
 AI8503.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8503.been affixed to the stable North American tectonic plate. See 
 AI8503.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8503
 AI8503.The horizontal coordinates are valid at the epoch date displayed above
 AI8503.which is a decimal equivalence of Year/Month/Day.
 AI8503
 AI8503.The orthometric height was determined by GPS observations and a
 AI8503.high-resolution geoid model.
 AI8503
 AI8503.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8503.GEOID18 height accuracy estimate available here.
 AI8503
 AI8503.Click photographs - Photos may exist for this station.
 AI8503
 AI8503.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8503
 AI8503.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8503
 AI8503.The ellipsoidal height was determined by GPS observations
 AI8503.and is referenced to NAD 83.
 AI8503
 AI8503. The following values were computed from the NAD 83(2011) position.
 AI8503
 AI8503;                    North         East     Units Scale Factor Converg.
 AI8503;SPC MD       -   180,602.206   393,997.502   MT  0.99997638   -0 02 37.2
 AI8503;SPC MD       -   592,525.74  1,292,640.14   sFT  0.99997638   -0 02 37.2
 AI8503;UTM  18      - 4,351,400.295   321,526.489   MT  0.99999220   -1 18 39.6
 AI8503
 AI8503!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8503!SPC MD       -   0.99997889  x   0.99997638  =   0.99995527
 AI8503!UTM  18      -   0.99997889  x   0.99999220  =   0.99997109
 AI8503
 AI8503_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2152651400(NAD 83)
 AI8503
 AI8503                          SUPERSEDED SURVEY CONTROL
 AI8503
 AI8503  NAD 83(2007)-  39 17 36.95933(N)    077 04 10.49552(W) AD(2002.00) 0
 AI8503  ELLIP H (02/10/07)  134.577  (m)                       GP(2002.00)    
 AI8503  ELLIP H (08/30/02)  134.577  (m)                       GP(       ) 4 2
 AI8503  NAD 83(1991)-  39 17 36.95914(N)    077 04 10.49573(W) AD(       ) 1
 AI8503  ELLIP H (11/16/00)  134.467  (m)                       GP(       ) 4 1
 AI8503
 AI8503.Superseded values are not recommended for survey control.
 AI8503
 AI8503.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8503.See file dsdata.pdf to determine how the superseded data were derived.
 AI8503
 AI8503_MARKER: DD = SURVEY DISK
 AI8503_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8503_STAMPING: 13IC
 AI8503_MARK LOGO: MD-027
 AI8503_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8503_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8503+STABILITY: SURFACE MOTION
 AI8503_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8503+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8503
 AI8503  HISTORY     - Date     Condition        Report By
 AI8503  HISTORY     - 1998     MONUMENTED       MD-027
 AI8503  HISTORY     - 20000915 GOOD             MD-027
 AI8503
 AI8503                          STATION DESCRIPTION
 AI8503
 AI8503'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8503'DESCRIPTION BY HOWARD COUNTY 2000    THE STATION IS IN THE LOCALITY
 AI8503'OF DAISY ABOUT  3.6 MILES SOUTHEAST  OF LISBON, 2.4 MILES
 AI8503'SOUTHWEST    OF COOKSVILLE AND 4.2 MILES  NORTHEAST OF DAMASCUS.
 AI8503'TO REACH  THE   STATION FROM THE POST OFFICE AT LISBON GO 0.5 MILES
 AI8503'EAST  ALONG   STATE HIGHWAY 144 TO DAISY  ROAD, TURN RIGHT AND GO
 AI8503'SOUTH  ALONG   DAISY ROAD FOR 3 MILES TO INTERSECTION WITH ED
 AI8503'WARFIELD  ROAD.   TURN RIGHT AND GO WEST ALONG ED WARFIELD ROAD
 AI8503'FOR 250  FEET TO   THE MARK ON YOUR LEFT (SOUTH)    THE STATION IS ON
 AI8503'TOP OF A  BANK  35.5   FEET SOUTH OF THE CENTERLINE  OF ED WARFIELD
 AI8503'ROAD,  ACROSS THE   STREET FROM HOUSE NUMBER  16032 .  1.6 FEET
 AI8503'WEST OF  POLE G AND E 370969   AND 47 FEET EAST OF A C AND P ELECTRIC
 AI8503'BOX.
 AI8503'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1102 ***********************************************************************
 HU1102  DESIGNATION -  14
 HU1102  PID         -  HU1102
 HU1102  STATE/COUNTY-  MD/DORCHESTER
 HU1102  COUNTRY     -  US
 HU1102  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU1102
 HU1102                         *CURRENT SURVEY CONTROL
 HU1102  ______________________________________________________________________
 HU1102* NAD 83(1986) POSITION- 38 28 54.2    (N) 075 49 30.5    (W)   HD_HELD2
 HU1102* NAVD 88 ORTHO HEIGHT -     3.659 (meters)       12.00  (feet) ADJUSTED
 HU1102  ______________________________________________________________________
 HU1102  GEOID HEIGHT    -        -35.491 (meters)                     GEOID18
 HU1102  DYNAMIC HEIGHT  -          3.657 (meters)       12.00  (feet) COMP
 HU1102  MODELED GRAVITY -    980,015.3   (mgal)                       NAVD 88
 HU1102
 HU1102  VERT ORDER      -  SECOND    CLASS I
 HU1102
 HU1102.The horizontal coordinates were established by autonomous hand held GPS
 HU1102.observations and have an estimated accuracy of +/- 10 meters.
 HU1102
 HU1102.The orthometric height was determined by differential leveling and
 HU1102.adjusted by the NATIONAL GEODETIC SURVEY
 HU1102.in May 2002.
 HU1102
 HU1102.No vertical observational check was made to the station.
 HU1102
 HU1102.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1102.GEOID18 height accuracy estimate available here.
 HU1102
 HU1102.Click photographs - Photos may exist for this station.
 HU1102
 HU1102.The dynamic height is computed by dividing the NAVD 88
 HU1102.geopotential number by the normal gravity value computed on the
 HU1102.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1102.degrees latitude (g = 980.6199 gals.).
 HU1102
 HU1102.The modeled gravity was interpolated from observed gravity values.
 HU1102
 HU1102;                    North         East    Units  Estimated Accuracy
 HU1102;SPC MD       -    91,134.      502,507.      MT  (+/- 10 meters HH2 GPS)
 HU1102
 HU1102_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2803059587(NAD 83)
 HU1102
 HU1102                          SUPERSEDED SURVEY CONTROL
 HU1102
 HU1102  NAVD 88 (06/15/91)    3.670  (m)           12.04   (f) SUPERSEDED  2 0
 HU1102  NGVD 29 (11/26/84)    3.911  (m)           12.83   (f) ADJUSTED    2 0
 HU1102
 HU1102.Superseded values are not recommended for survey control.
 HU1102
 HU1102.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1102.See file dsdata.pdf to determine how the superseded data were derived.
 HU1102
 HU1102_MARKER: DB = BENCH MARK DISK
 HU1102_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HU1102_SP_SET: BUILDING
 HU1102_STAMPING: MD BALTO 14
 HU1102_MARK LOGO: USGS
 HU1102_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1102+STABILITY: SURFACE MOTION
 HU1102_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU1102+SATELLITE: SATELLITE OBSERVATIONS - April 30, 2015
 HU1102
 HU1102  HISTORY     - Date     Condition        Report By
 HU1102  HISTORY     - 1900     MONUMENTED       USGS
 HU1102  HISTORY     - 19910423 GOOD             MDSHA
 HU1102  HISTORY     - 20150430 GOOD             PROFLN
 HU1102
 HU1102                          STATION DESCRIPTION
 HU1102
 HU1102'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (RGP)
 HU1102'TO REACH FROM THE POST OFFICE IN VIENNA, GO SOUTHWEST ON MARKET STREET
 HU1102'FOR 0.05 MI (0.08 KM) TO AN INTERSECTION.  TURN LEFT AND GO SOUTHEAST
 HU1102'FOR 0.17 MI (0.27 KM) TO A BRICK BUILDING AND THE MARK ON THE RIGHT.
 HU1102'THE MARK IS 94.4 FT (28.8 M) SOUTH OF POWERLINE POLE NUMBER
 HU1102'40416-97434, 53.8 FT (16.4 M) NORTHWEST OF THE PROJECTED CENTERLINE OF
 HU1102'WATER STREET, 49.0 FT (14.9 M) SOUTHWEST OF THE CENTERLINE OF CHURCH
 HU1102'STREET, 1.2 FT (0.4 M) SOUTHWEST OF THE NORTH CORNER OF THE BRICK
 HU1102'BUILDING, AND SET VERTICALLY IN A DRILL HOLE IN THE BUILDING. THE MARK
 HU1102'IS LOCATED IN VIENNA ON LAND OWNED BY NANTICOKE MANOR. PHONE -
 HU1102'410-376-3530.
 HU1102
 HU1102                          STATION RECOVERY (2015)
 HU1102
 HU1102'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2015 (JRO)
 HU1102'THE MARK IS IN THE RIGHT SIDE WALL - FACING THE HOUSE - OF A TWO-STORY
 HU1102'BRICK HOUSE WITH LARGE FRONT PORCH, UNDER THICK BRANCHES OF A LARGE
 HU1102'TREE THAT I RECALL AS A HOLLY.  NO ONE CAME TO THE DOOR TO TALK TO ON
 HU1102'THE DAY OF RECOVERY ALTHOUGH THE FRONT DOOR WAS OPEN AND A CAR IN THE
 HU1102'DRIVEWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4847 ***********************************************************************
 JV4847  DESIGNATION -  14
 JV4847  PID         -  JV4847
 JV4847  STATE/COUNTY-  MD/CECIL
 JV4847  COUNTRY     -  US
 JV4847  USGS QUAD   -  SPESUTIE (2016)
 JV4847
 JV4847                         *CURRENT SURVEY CONTROL
 JV4847  ______________________________________________________________________
 JV4847* NAD 83(1991) POSITION- 39 24 09.90835(N) 076 02 01.16915(W)   ADJUSTED
 JV4847* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4847  ______________________________________________________________________
 JV4847  GEOID HEIGHT    -        -33.366 (meters)                     GEOID18
 JV4847  LAPLACE CORR    -         -1.01  (seconds)                    DEFLEC18
 JV4847  HORZ ORDER      -  THIRD
 JV4847
 JV4847.The horizontal coordinates were established by classical geodetic methods
 JV4847.and adjusted by the National Geodetic Survey in January 1992.
 JV4847
 JV4847.The orthometric height was scaled from a topographic map.
 JV4847
 JV4847.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4847.GEOID18 height accuracy estimate available here.
 JV4847
 JV4847.Click photographs - Photos may exist for this station.
 JV4847
 JV4847.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4847
 JV4847. The following values were computed from the NAD 83(1991) position.
 JV4847
 JV4847;                    North         East     Units Scale Factor Converg.
 JV4847;SPC MD       -   193,158.602   483,231.866   MT  0.99999208   +0 36 23.4
 JV4847;SPC MD       -   633,721.18  1,585,403.21   sFT  0.99999208   +0 36 23.4
 JV4847;UTM  18      - 4,361,981.606   411,002.428   MT  0.99969752   -0 39 22.2
 JV4847
 JV4847!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4847!SPC MD       -   1.00000527  x   0.99999208  =   0.99999735
 JV4847!UTM  18      -   1.00000527  x   0.99969752  =   0.99970279
 JV4847
 JV4847:                Primary Azimuth Mark                     Grid Az
 JV4847:SPC MD       -  TURKEY POINT RESET                       021 18 35.2
 JV4847:UTM  18      -  TURKEY POINT RESET                       022 34 20.8
 JV4847
 JV4847_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1100261981(NAD 83)
 JV4847
 JV4847|---------------------------------------------------------------------|
 JV4847| PID    Reference Object                     Distance      Geod. Az  |
 JV4847|                                                           dddmmss.s |
 JV4847| JV4850 TURKEY POINT RESET                  APPROX. 5.6 KM 0215458.6 |
 JV4847| JV4878 13                                  APPROX. 3.5 KM 0495304.2 |
 JV4847| CA9851 14 RM 2                              22.860 METERS 15510     |
 JV4847| CA9850 14 RM 1                               9.144 METERS 15510     |
 JV4847| JV4890 GROVE NECK CHAN S FRONT RNG LT      APPROX. 5.6 KM 2293123.9 |
 JV4847| JV4871 N 2                                 APPROX. 7.0 KM 2980113.0 |
 JV4847|---------------------------------------------------------------------|
 JV4847
 JV4847                          SUPERSEDED SURVEY CONTROL
 JV4847
 JV4847  NAD 83(1986)-  39 24 09.90091(N)    076 02 01.17570(W) AD(       ) 3
 JV4847  NAD 27      -  39 24 09.51200(N)    076 02 02.37100(W) AD(       ) 3
 JV4847
 JV4847.Superseded values are not recommended for survey control.
 JV4847
 JV4847.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4847.See file dsdata.pdf to determine how the superseded data were derived.
 JV4847
 JV4847_MARKER: DD = SURVEY DISK
 JV4847_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4847_STAMPING: 14
 JV4847_MARK LOGO: USACE
 JV4847_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4847+STABILITY: SURFACE MOTION
 JV4847
 JV4847  HISTORY     - Date     Condition        Report By
 JV4847  HISTORY     - 1937     MONUMENTED       USACE
 JV4847  HISTORY     - 1938     GOOD             CGS
 JV4847  HISTORY     - 1939     GOOD             CGS
 JV4847  HISTORY     - 1973     MARK NOT FOUND   NGS
 JV4847
 JV4847                          STATION DESCRIPTION
 JV4847
 JV4847'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JV4847'ON THE E SIDE OF CHESAPEAKE BAY, ON GROVE POINT, ON AN 80-FOOT
 JV4847'BLUFF.  STATION IS ABOUT 2 METERS INSHORE FROM TOP OF BLUFF
 JV4847'WHICH OVERLOOKS THE BAY.
 JV4847'
 JV4847'STATION MARK IS A STANDARD U.S.E. DISK CEMENTED IN TOP OF A
 JV4847'6-INCH-SQUARE CONCRETE POST PROJECTING 1 FOOT, STAMPED 14.
 JV4847'
 JV4847'REFERENCE MARK 1 IS A STANDARD U.S.E. DISK CEMENTED IN TOP OF A
 JV4847'6-INCH CONCRETE POST SET FLUSH WITH GROUND AND STAMPED NO 1 1937
 JV4847'14.  DISTANT FROM STATION 9.1 METERS.
 JV4847'
 JV4847'REFERENCE MARK 2 IS SIMILAR TO REFERENCE MARK 1.  IT IS
 JV4847'STAMPED NO 2 1937 14.  DISTANT FROM STATION 22.8 METERS.
 JV4847'
 JV4847'THE TWO REFERENCE MARKS ARE SET INSHORE FROM STATION ON LINE
 JV4847'WITH TRIANGULATION STATION 1 (U.S.E.).
 JV4847
 JV4847                          STATION RECOVERY (1939)
 JV4847
 JV4847'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4847'STATION RECOVERED IN GOOD CONDITION.
 JV4847'
 JV4847'STATION IS LOCATED ON THE EASTERN SHORE OF CHESAPEAKE BAY ABOUT
 JV4847'9 MILES W OF CECILTON, MARYLAND, 1-1/2 MILES N OF THE ENTRANCE
 JV4847'TO SASSAFRAS RIVER ON GROVE NECK.
 JV4847'
 JV4847'STATION IS AT THE W EDGE OF HEAVY WOODS AT THE END OF A
 JV4847'WOODS TRAIL ABOUT 1-1/2 METERS E OF THE TOP OF A 50-FOOT BLUFF
 JV4847'23.4 FEET SW OF A NAIL IN A 24-INCH RED OAK, 45.2 FEET W OF A NAIL
 JV4847'IN A 24-INCH POPLAR, AND 50.5 FEET NW OF A NAIL IN A 24-INCH RED
 JV4847'OAK.  MARK IS A STANDARD U.S.E. DISK ATOP A 6-INCH SQUARE
 JV4847'CONCRETE POST, PROJECTING 6 INCHES ABOVE THE SURFACE OF THE
 JV4847'GROUND.
 JV4847'
 JV4847'THIS MARK WILL PROBABLY NOT LAST LONG AS THE BLUFF IS WASHING
 JV4847'RAPIDLY.
 JV4847'
 JV4847'REFERENCE MARK NO.1 IS 30.0 FEET SE OF STATION.
 JV4847'
 JV4847'REFERENCE MARK NO.2 IS 75.0 FEET SE OF STATION IN LINE WITH
 JV4847'REFERENCE MARK NO.1 AND THE STATION MARK.
 JV4847'
 JV4847'BOTH REFERENCE MARKS ARE STANDARD U.S.E. REFERENCE DISKS ATOP
 JV4847'CONCRETE POSTS.
 JV4847'
 JV4847'TO REACH THE STATION FROM CECILTON, MARYLAND, FOLLOW CONCRETE
 JV4847'ROAD W APPROXIMATELY 9 MILES.  TURN RIGHT AND FOLLOW SIGNS TO BLUE
 JV4847'BONNET COTTAGE.  STATION IS APPROXIMATELY 50 METERS N ALONG TOP
 JV4847'OF BLUFF FROM THE BLUE BONNET COTTAGE.
 JV4847
 JV4847                          STATION RECOVERY (1973)
 JV4847
 JV4847'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV4847'THE STATION WAS SEARCHED FOR BUT NOT FOUND.  IT IS BELIEVED ALL
 JV4847'MARKS WERE DESTROYED.
 JV4847'
 JV4847'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4847'1/2 MILE NORTHEAST OF GROVE POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7824 ***********************************************************************
 DR7824  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7824  DESIGNATION -  14
 DR7824  PID         -  DR7824
 DR7824  STATE/COUNTY-  MD/QUEEN ANNES
 DR7824  COUNTRY     -  US
 DR7824  USGS QUAD   -  QUEENSTOWN (2016)
 DR7824
 DR7824                         *CURRENT SURVEY CONTROL
 DR7824  ______________________________________________________________________
 DR7824* NAD 83(2011) POSITION- 38 59 48.91832(N) 076 07 39.86978(W)   ADJUSTED
 DR7824* NAD 83(2011) ELLIP HT-   -16.213 (meters)        (02/02/22)   ADJUSTED
 DR7824* NAD 83(2011) EPOCH   -  2010.00
 DR7824* NAVD 88 ORTHO HEIGHT -    17.66  (meters)       57.9   (feet) GPS OBS
 DR7824  ______________________________________________________________________
 DR7824  GEOID HEIGHT    -        -33.875 (meters)                     GEOID18
 DR7824  NAD 83(2011) X  -  1,190,046.028 (meters)                     COMP
 DR7824  NAD 83(2011) Y  - -4,818,756.938 (meters)                     COMP
 DR7824  NAD 83(2011) Z  -  3,992,041.238 (meters)                     COMP
 DR7824  LAPLACE CORR    -         -4.19  (seconds)                    DEFLEC18
 DR7824
 DR7824  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7824  Standards:
 DR7824         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7824            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7824  -------------------------------------------------------------------
 DR7824  NETWORK    0.77   1.76           0.34   0.28   0.90     -0.13833716
 DR7824  -------------------------------------------------------------------
 DR7824  Click here for local accuracies and other accuracy information.
 DR7824
 DR7824.The horizontal coordinates were established by GPS observations
 DR7824.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7824
 DR7824.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7824.been affixed to the stable North American tectonic plate. See 
 DR7824.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7824
 DR7824.The horizontal coordinates are valid at the epoch date displayed above
 DR7824.which is a decimal equivalence of Year/Month/Day.
 DR7824
 DR7824.The orthometric height was determined by GPS observations and a
 DR7824.high-resolution geoid model using precise GPS observation and
 DR7824.processing techniques.
 DR7824
 DR7824.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7824.GEOID18 height accuracy estimate available here.
 DR7824
 DR7824.Click photographs - Photos may exist for this station.
 DR7824
 DR7824.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7824
 DR7824.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7824
 DR7824.The ellipsoidal height was determined by GPS observations
 DR7824.and is referenced to NAD 83.
 DR7824
 DR7824. The following values were computed from the NAD 83(2011) position.
 DR7824
 DR7824;                    North         East     Units Scale Factor Converg.
 DR7824;SPC MD       -   148,025.477   475,559.111   MT  0.99995207   +0 32 50.9
 DR7824;SPC MD       -   485,646.92  1,560,230.18   sFT  0.99995207   +0 32 50.9
 DR7824;UTM  18      - 4,317,039.829   402,341.319   MT  0.99971743   -0 42 35.0
 DR7824
 DR7824!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7824!SPC MD       -   1.00000254  x   0.99995207  =   0.99995461
 DR7824!UTM  18      -   1.00000254  x   0.99971743  =   0.99971997
 DR7824
 DR7824_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0234117039(NAD 83)
 DR7824
 DR7824                          SUPERSEDED SURVEY CONTROL
 DR7824
 DR7824.No superseded survey control is available for this station.
 DR7824
 DR7824_MARKER: DD = SURVEY DISK
 DR7824_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7824_STAMPING: 14
 DR7824_MARK LOGO: MD-035
 DR7824_PROJECTION: FLUSH
 DR7824_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7824+STABILITY: SURFACE MOTION
 DR7824_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7824+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7824
 DR7824  HISTORY     - Date     Condition        Report By
 DR7824  HISTORY     - UNK      MONUMENTED       MD-035
 DR7824  HISTORY     - 20210309 GOOD             MDSHA
 DR7824
 DR7824                          STATION DESCRIPTION
 DR7824
 DR7824'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7824'THE MARK IS LOCATED ABOUT 4.6 MI (7.4 KM) NORTHWEST OF WYE MILLS, 5.2
 DR7824'MI (8.4 KM) NORTHEAST OF GRASONVILLE AND 4.5 MI (7.2 KM) SOUTHWEST OF
 DR7824'CENTERVILLE.
 DR7824'
 DR7824'TO REACH FROM THE JUNCTION OF MD 213 AND US 301, GO WEST ON US 301 FOR
 DR7824'3.24 MI (5.21 KM) TO THE INTERSECTION OF CHERRY LANE ON THE RIGHT AND
 DR7824'WARRINGTON FARM LANE ON THE LEFT.  MAKE A U-TURN AND GO NORTHEAST ON
 DR7824'US 301 FOR 0.07 MI (0.11 KM) TO THE MARK ON THE RIGHT.
 DR7824'
 DR7824'THE MARK IS 300 FT (91.4 M) NORTHEAST OF THE CENTERLINE OF WARRINGTON
 DR7824'FARM LANE, 299.5 FT (91.3 M) SOUTHWEST OF THE SOUTHEAST END OF A
 DR7824'CONCRETE HEADWALL, 45.6 FT (13.9 M) SOUTHEAST OF OF THE CENTERLINE OF
 DR7824'THE EASTERN MOST LANE OF US 301 NORTHBOUND, 16.8 FT (5.1 M) NORTHWEST
 DR7824'OF A FIBERGLASS WITNESS POST AND SET IN THE TOP OF A 12-IN (30 CM)
 DR7824'ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0048 ***********************************************************************
 JV0048  DESIGNATION -  14 A PRR
 JV0048  PID         -  JV0048
 JV0048  STATE/COUNTY-  MD/CECIL
 JV0048  COUNTRY     -  US
 JV0048  USGS QUAD   -  CONOWINGO DAM (2016)
 JV0048
 JV0048                         *CURRENT SURVEY CONTROL
 JV0048  ______________________________________________________________________
 JV0048* NAD 83(1986) POSITION- 39 43 02.     (N) 076 13 28.     (W)   SCALED
 JV0048* NAVD 88 ORTHO HEIGHT -    36.328 (meters)      119.19  (feet) ADJUSTED
 JV0048  ______________________________________________________________________
 JV0048  GEOID HEIGHT    -        -32.924 (meters)                     GEOID18
 JV0048  DYNAMIC HEIGHT  -         36.310 (meters)      119.13  (feet) COMP
 JV0048  MODELED GRAVITY -    980,132.9   (mgal)                       NAVD 88
 JV0048
 JV0048  VERT ORDER      -  FIRST     CLASS II
 JV0048
 JV0048.The horizontal coordinates were scaled from a map and have
 JV0048.an estimated accuracy of +/- 6 seconds.
 JV0048
 JV0048.The orthometric height was determined by differential leveling and
 JV0048.adjusted by the NATIONAL GEODETIC SURVEY
 JV0048.in June 1991.
 JV0048
 JV0048.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0048.GEOID18 height accuracy estimate available here.
 JV0048
 JV0048.Click photographs - Photos may exist for this station.
 JV0048
 JV0048.The dynamic height is computed by dividing the NAVD 88
 JV0048.geopotential number by the normal gravity value computed on the
 JV0048.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0048.degrees latitude (g = 980.6199 gals.).
 JV0048
 JV0048.The modeled gravity was interpolated from observed gravity values.
 JV0048
 JV0048;                    North         East    Units  Estimated Accuracy
 JV0048;SPC MD       -   227,920.      466,500.      MT  (+/- 180 meters Scaled)
 JV0048
 JV0048_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ950970(NAD 83)
 JV0048
 JV0048                          SUPERSEDED SURVEY CONTROL
 JV0048
 JV0048  NGVD 29 (11/26/84)   36.581  (m)          120.02   (f) ADJUSTED    1 2
 JV0048
 JV0048.Superseded values are not recommended for survey control.
 JV0048
 JV0048.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0048.See file dsdata.pdf to determine how the superseded data were derived.
 JV0048
 JV0048_MARKER: B = BOLT
 JV0048_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0048_SP_SET: BRIDGE
 JV0048_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0048
 JV0048  HISTORY     - Date     Condition        Report By
 JV0048  HISTORY     - UNK      MONUMENTED       PRR
 JV0048  HISTORY     - 1955     GOOD             CGS
 JV0048  HISTORY     - 20120316 GOOD             CCDES
 JV0048
 JV0048                          STATION DESCRIPTION
 JV0048
 JV0048'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0048'4.6 MI NW FROM CONOWINGO DAM.
 JV0048'ABOUT 4.55 MILES NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV0048'THE STATION AT CONOWINGO DAM, ABOUT 0.45 MILE SOUTH OF MILE POST
 JV0048'15, ABOUT 205 YARDS SOUTH OF SOUTH END OF THE CENTER ONE OF THREE
 JV0048'TUNNELS, ABOUT 0.25 MILE SOUTH OF THE PENNSYLVANIA-MARYLAND STATE
 JV0048'LINE, A COPPER BOLT IN THE TOP OF NORTH END OF WEST HEAD WALL OF
 JV0048'A 15-FOOT SKEW CONCRETE ARCH BRIDGE FOR A SMALL CREEK, 19 1/2
 JV0048'FEET WEST OF WEST RAIL AND ABOUT 1 FOOT BELOW LEVEL OF TRACK.
 JV0048
 JV0048                          STATION RECOVERY (2012)
 JV0048
 JV0048'RECOVERY NOTE BY CECIL COUNTY DEPARTMENT OF 2012 (JEH)
 JV0048'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2263 ***********************************************************************
 HU2263  DESIGNATION -  14 KEM
 HU2263  PID         -  HU2263
 HU2263  STATE/COUNTY-  MD/WICOMICO
 HU2263  COUNTRY     -  US
 HU2263  USGS QUAD   -  NANTICOKE (2016)
 HU2263
 HU2263                         *CURRENT SURVEY CONTROL
 HU2263  ______________________________________________________________________
 HU2263* NAD 83(1986) POSITION- 38 16 44.5    (N) 075 53 57.5    (W)   HD_HELD2
 HU2263* NAVD 88 ORTHO HEIGHT -     2.615 (meters)        8.58  (feet) ADJUSTED
 HU2263  ______________________________________________________________________
 HU2263  GEOID HEIGHT    -        -35.712 (meters)                     GEOID18
 HU2263  DYNAMIC HEIGHT  -          2.613 (meters)        8.57  (feet) COMP
 HU2263  MODELED GRAVITY -    979,992.3   (mgal)                       NAVD 88
 HU2263
 HU2263  VERT ORDER      -  SECOND    CLASS I
 HU2263
 HU2263.The horizontal coordinates were established by autonomous hand held GPS
 HU2263.observations and have an estimated accuracy of +/- 10 meters.
 HU2263
 HU2263.The orthometric height was determined by differential leveling and
 HU2263.adjusted by the NATIONAL GEODETIC SURVEY
 HU2263.in June 1991.
 HU2263
 HU2263.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2263.GEOID18 height accuracy estimate available here.
 HU2263
 HU2263.Click photographs - Photos may exist for this station.
 HU2263
 HU2263.The dynamic height is computed by dividing the NAVD 88
 HU2263.geopotential number by the normal gravity value computed on the
 HU2263.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2263.degrees latitude (g = 980.6199 gals.).
 HU2263
 HU2263.The modeled gravity was interpolated from observed gravity values.
 HU2263
 HU2263;                    North         East    Units  Estimated Accuracy
 HU2263;SPC MD       -    68,556.      496,307.      MT  (+/- 10 meters HH2 GPS)
 HU2263
 HU2263_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2134237156(NAD 83)
 HU2263
 HU2263                          SUPERSEDED SURVEY CONTROL
 HU2263
 HU2263  NGVD 29 (06/12/91)    2.869  (m)            9.41   (f) ADJUSTED    2 1
 HU2263
 HU2263.Superseded values are not recommended for survey control.
 HU2263
 HU2263.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2263.See file dsdata.pdf to determine how the superseded data were derived.
 HU2263
 HU2263_MARKER: DB = BENCH MARK DISK
 HU2263_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2263_STAMPING: 14 KEM 1977
 HU2263_MARK LOGO: USGS
 HU2263_PROJECTION: RECESSED 13 CENTIMETERS
 HU2263_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2263_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2263+STABILITY: SURFACE MOTION
 HU2263_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2263+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2019
 HU2263
 HU2263  HISTORY     - Date     Condition        Report By
 HU2263  HISTORY     - 1977     MONUMENTED       USGS
 HU2263  HISTORY     - 19900301 GOOD             NGS
 HU2263  HISTORY     - 20190514 GOOD             PROFLN
 HU2263
 HU2263                          STATION DESCRIPTION
 HU2263
 HU2263'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2263'1.1 KM (0.68 MI) NORTHERLY ALONG STATE HIGHWAY 349 FROM THE POST
 HU2263'OFFICE IN NANTICOKE, 18.0 M (59.05 FT) NORTHWEST OF THE CENTERLINE OF
 HU2263'THE HIGHWAY, 2.9 M (9.51 FT) SOUTHWEST OF THE CENTER OF A DRIVEWAY,
 HU2263'0.8 M (2.62 FT) EAST OF UTILITY POLE NUMBER 38223 90065, AND IN A
 HU2263'CONCRETE MONUMENT THAT IS 0.1 M (0.33 FT) BELOW THE GROUND SURFACE.
 HU2263
 HU2263                          STATION RECOVERY (2019)
 HU2263
 HU2263'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2263'THE MARK IS AT THE ENTRANCE TO CHATEAU FERREE, 20704 NANTICOKE ROAD OR
 HU2263'SR 349, AT THE SOUTHWEST END OF A BIG CURVE IN THE HIGHWAY.  IT IS
 HU2263'56.5 FT (17.2 M) NORTHWEST OF POLE 32828 69006 WITH BOX AND
 HU2263'STREETLIGHT, 44 FT (13.4 M) WEST-NORTHWEST TOWARD POLE 38223 90065
 HU2263'WHICH MUST BE IN A DIFFERENT SPOT THAN IN 1990, 26.5 FT (8.1 M) EAST
 HU2263'OF A TRIPLE-TRUNK 36 INCH MAPLE, 8.5 FT (2.6 M) NORTH OF A GUY WIRE, 5
 HU2263'FT (1.5 M) EAST-SOUTHEAST OF POLE 38223 90065.  THE MARK WAS PLACED
 HU2263'UNDER A RECTANGULAR VALVE BOX TO AID RECOVERY AND USE.  THE LOGO CAP
 HU2263'IS RECESSED 0.4 FT (12 CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1181 ***********************************************************************
 JV1181  DESIGNATION -  14 PRR
 JV1181  PID         -  JV1181
 JV1181  STATE/COUNTY-  MD/BALTIMORE
 JV1181  COUNTRY     -  US
 JV1181  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1181
 JV1181                         *CURRENT SURVEY CONTROL
 JV1181  ______________________________________________________________________
 JV1181* NAD 83(1986) POSITION- 39 25 29.0    (N) 076 37 40.9    (W)   HD_HELD2
 JV1181* NAVD 88 ORTHO HEIGHT -   108.969 (meters)      357.51  (feet) ADJUSTED
 JV1181  ______________________________________________________________________
 JV1181  GEOID HEIGHT    -        -32.488 (meters)                     GEOID18
 JV1181  DYNAMIC HEIGHT  -        108.911 (meters)      357.32  (feet) COMP
 JV1181  MODELED GRAVITY -    980,098.3   (mgal)                       NAVD 88
 JV1181
 JV1181  VERT ORDER      -  SECOND    CLASS 0
 JV1181
 JV1181.The horizontal coordinates were established by autonomous hand held GPS
 JV1181.observations and have an estimated accuracy of +/- 10 meters.
 JV1181
 JV1181.The orthometric height was determined by differential leveling and
 JV1181.adjusted by the NATIONAL GEODETIC SURVEY
 JV1181.in June 1991.
 JV1181
 JV1181.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1181.GEOID18 height accuracy estimate available here.
 JV1181
 JV1181.Click photographs - Photos may exist for this station.
 JV1181
 JV1181.The dynamic height is computed by dividing the NAVD 88
 JV1181.geopotential number by the normal gravity value computed on the
 JV1181.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1181.degrees latitude (g = 980.6199 gals.).
 JV1181
 JV1181.The modeled gravity was interpolated from observed gravity values.
 JV1181
 JV1181;                    North         East    Units  Estimated Accuracy
 JV1181;SPC MD       -   195,222.      432,029.      MT  (+/- 10 meters HH2 GPS)
 JV1181
 JV1181_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5986965174(NAD 83)
 JV1181
 JV1181                          SUPERSEDED SURVEY CONTROL
 JV1181
 JV1181  NGVD 29 (11/26/84)  109.186  (m)          358.22   (f) ADJUSTED    2 0
 JV1181
 JV1181.Superseded values are not recommended for survey control.
 JV1181
 JV1181.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1181.See file dsdata.pdf to determine how the superseded data were derived.
 JV1181
 JV1181_MARKER: B = BOLT
 JV1181_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1181_SP_SET: CULVERT
 JV1181_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1181
 JV1181  HISTORY     - Date     Condition        Report By
 JV1181  HISTORY     - UNK      MONUMENTED       PRR
 JV1181  HISTORY     - 1939     GOOD             CGS
 JV1181
 JV1181                          STATION DESCRIPTION
 JV1181
 JV1181'DESCRIBED BY COAST AND GEODETIC SURVEY 1939
 JV1181'0.7 MI N FROM LUTHERVILLE.
 JV1181'0.7 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV1181'AT LUTHERVILLE, BALTIMORE COUNTY, ABOUT 810 FEET NORTH OF MILEPOST
 JV1181'11, IN THE TOP OF THE WEST END OF A CULVERT, AND 24 FEET WEST OF
 JV1181'THE CENTERLINE OF THE WEST TRACK.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0499 ***********************************************************************
 JV0499  DESIGNATION -  14 W RESET
 JV0499  PID         -  JV0499
 JV0499  STATE/COUNTY-  MD/BALTIMORE
 JV0499  COUNTRY     -  US
 JV0499  USGS QUAD   -  MIDDLE RIVER (2016)
 JV0499
 JV0499                         *CURRENT SURVEY CONTROL
 JV0499  ______________________________________________________________________
 JV0499* NAD 83(1986) POSITION- 39 20 13.     (N) 076 28 43.     (W)   SCALED
 JV0499* NAVD 88 ORTHO HEIGHT -    12.64  (meters)       41.5   (feet) RESET
 JV0499  ______________________________________________________________________
 JV0499  GEOID HEIGHT    -        -32.936 (meters)                     GEOID18
 JV0499  VERT ORDER      -  THIRD
 JV0499
 JV0499.The horizontal coordinates were scaled from a map and have
 JV0499.an estimated accuracy of +/- 6 seconds.
 JV0499
 JV0499.The orthometric height was computed from unverified reset data.
 JV0499
 JV0499.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0499.GEOID18 height accuracy estimate available here.
 JV0499
 JV0499.Click photographs - Photos may exist for this station.
 JV0499
 JV0499;                    North         East    Units  Estimated Accuracy
 JV0499;SPC MD       -   185,540.      444,950.      MT  (+/- 180 meters Scaled)
 JV0499
 JV0499_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ725552(NAD 83)
 JV0499
 JV0499                          SUPERSEDED SURVEY CONTROL
 JV0499
 JV0499  NGVD 29 (??/??/??)   12.88   (m)           42.3    (f) RESET       3  
 JV0499
 JV0499.Superseded values are not recommended for survey control.
 JV0499
 JV0499.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0499.See file dsdata.pdf to determine how the superseded data were derived.
 JV0499
 JV0499_MARKER: DD = SURVEY DISK
 JV0499_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0499_STAMPING: NO 14 W USGS RESET 1966
 JV0499_MARK LOGO: USGS
 JV0499_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0499+STABILITY: SURFACE MOTION
 JV0499
 JV0499  HISTORY     - Date     Condition        Report By
 JV0499  HISTORY     - 1966     MONUMENTED       CGS
 JV0499
 JV0499                          STATION DESCRIPTION
 JV0499
 JV0499'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 JV0499'AT ROSSVILLE.
 JV0499'AT ROSSVILLE ON THE BALTIMORE AND OHIO RAILROAD, 100 FEET EAST
 JV0499'OF THE CENTERLINE OF THE RAILROAD BRIDGE OVER RACE ROAD, 21.5
 JV0499'FEET NORTH OF THE NORTH TRACK OF THE MAIN LINE, 3 FEET EAST OF
 JV0499'TELEPHONE POLE 91 B AND 1.0 FOOT WEST OF STEEL WITNESS POST.  A
 JV0499'STANDARD DISK SET FLUSH IN THE TOP OF A CONCRETE MONUMENT ABOUT
 JV0499'10 INCHES IN DIAMETER AND FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2135 ***********************************************************************
 JV2135  DESIGNATION -  140 BORR
 JV2135  PID         -  JV2135
 JV2135  STATE/COUNTY-  MD/FREDERICK
 JV2135  COUNTRY     -  US
 JV2135  USGS QUAD   -  DAMASCUS (2016)
 JV2135
 JV2135                         *CURRENT SURVEY CONTROL
 JV2135  ______________________________________________________________________
 JV2135* NAD 83(1986) POSITION- 39 22 27.     (N) 077 13 56.     (W)   SCALED
 JV2135* NAVD 88 ORTHO HEIGHT -   160.837 (meters)      527.68  (feet) ADJUSTED
 JV2135  ______________________________________________________________________
 JV2135  GEOID HEIGHT    -        -32.110 (meters)                     GEOID18
 JV2135  DYNAMIC HEIGHT  -        160.753 (meters)      527.40  (feet) COMP
 JV2135  MODELED GRAVITY -    980,098.4   (mgal)                       NAVD 88
 JV2135
 JV2135  VERT ORDER      -  FIRST     CLASS II
 JV2135
 JV2135.The horizontal coordinates were scaled from a map and have
 JV2135.an estimated accuracy of +/- 6 seconds.
 JV2135
 JV2135.The orthometric height was determined by differential leveling and
 JV2135.adjusted by the NATIONAL GEODETIC SURVEY
 JV2135.in June 1991.
 JV2135
 JV2135.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2135.GEOID18 height accuracy estimate available here.
 JV2135
 JV2135.Click photographs - Photos may exist for this station.
 JV2135
 JV2135.The dynamic height is computed by dividing the NAVD 88
 JV2135.geopotential number by the normal gravity value computed on the
 JV2135.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2135.degrees latitude (g = 980.6199 gals.).
 JV2135
 JV2135.The modeled gravity was interpolated from observed gravity values.
 JV2135
 JV2135;                    North         East    Units  Estimated Accuracy
 JV2135;SPC MD       -   189,570.      379,990.      MT  (+/- 180 meters Scaled)
 JV2135
 JV2135_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ077606(NAD 83)
 JV2135
 JV2135                          SUPERSEDED SURVEY CONTROL
 JV2135
 JV2135  NGVD 29 (11/26/84)  161.042  (m)          528.35   (f) ADJUSTED    1 2
 JV2135
 JV2135.Superseded values are not recommended for survey control.
 JV2135
 JV2135.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2135.See file dsdata.pdf to determine how the superseded data were derived.
 JV2135
 JV2135_MARKER: B = BOLT
 JV2135_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2135_SP_SET: BRIDGE
 JV2135_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2135
 JV2135  HISTORY     - Date     Condition        Report By
 JV2135  HISTORY     - 1903     MONUMENTED       BORR
 JV2135  HISTORY     - 1941     GOOD             CGS
 JV2135
 JV2135                          STATION DESCRIPTION
 JV2135
 JV2135'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2135'4.8 MI W FROM MOUNT AIRY.
 JV2135'IN FREDERICK COUNTY, ABOUT 4.8 MILES WEST ALONG THE BALTIMORE
 JV2135'AND OHIO RAILROAD FROM THE STATION AT MOUNT AIRY, CARROLL
 JV2135'COUNTY, ABOUT 300 FEET WEST OF THE STATION AT BARTHOLOW, AT
 JV2135'BRIDGE 30, IN THE TOP OF THE SOUTH COPING, 1.0 FOOT EAST OF THE
 JV2135'WEST END, 1/2 FOOT FROM THE NORTH EDGE, 12.2 FEET NORTH OF
 JV2135'THE NORTH RAIL OF THE WEST-BOUND TRACK, AND ABOUT 4.2 FEET
 JV2135'LOWER THAN THE TOP OF THE RAIL.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1215 ***********************************************************************
 HV1215  DESIGNATION -  1438 WSSC
 HV1215  PID         -  HV1215
 HV1215  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1215  COUNTRY     -  US
 HV1215  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1215
 HV1215                         *CURRENT SURVEY CONTROL
 HV1215  ______________________________________________________________________
 HV1215* NAD 83(1986) POSITION- 38 53 15.     (N) 076 53 09.     (W)   SCALED
 HV1215* NAVD 88 ORTHO HEIGHT -    56.31  (+/-2cm)      184.7   (feet) VERTCON3
 HV1215  ______________________________________________________________________
 HV1215  GEOID HEIGHT    -        -32.395 (meters)                     GEOID18
 HV1215  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1215
 HV1215.The horizontal coordinates were scaled from a map and have
 HV1215.an estimated accuracy of +/- 6 seconds.
 HV1215
 HV1215.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1215.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1215
 HV1215.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1215.GEOID18 height accuracy estimate available here.
 HV1215
 HV1215.The vertical order pertains to the NGVD 29 superseded value.
 HV1215
 HV1215.Click photographs - Photos may exist for this station.
 HV1215
 HV1215;                    North         East    Units  Estimated Accuracy
 HV1215;SPC MD       -   135,520.      409,910.      MT  (+/- 180 meters Scaled)
 HV1215
 HV1215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ364059(NAD 83)
 HV1215
 HV1215                          SUPERSEDED SURVEY CONTROL
 HV1215
 HV1215  NGVD 29 (11/26/84)   56.556  (m)          185.55   (f) ADJUSTED    2 0
 HV1215
 HV1215.Superseded values are not recommended for survey control.
 HV1215
 HV1215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1215.See file dsdata.pdf to determine how the superseded data were derived.
 HV1215
 HV1215_MARKER: B = BOLT
 HV1215_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1215_SP_SET: STEPS
 HV1215_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1215
 HV1215  HISTORY     - Date     Condition        Report By
 HV1215  HISTORY     - UNK      MONUMENTED       WSSC
 HV1215  HISTORY     - 1944     GOOD             WSSC
 HV1215  HISTORY     - 1978     MARK NOT FOUND   NGS
 HV1215
 HV1215                          STATION DESCRIPTION
 HV1215
 HV1215'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1215'1 MI E FROM SEAT PLEASANT.
 HV1215'ON CENTRAL AVENUE, 0.4 MILE WEST OF WALKERS MILL ROAD, ON THE
 HV1215'NORTH SIDE OF THE AVENUE, AT A BUNGALOW, AND IN THE BOTTOM OF THE
 HV1215'FRONT CONCRETE STEPS.
 HV1215
 HV1215                          STATION RECOVERY (1978)
 HV1215
 HV1215'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
 HV1215'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1421 ***********************************************************************
 JV1421  DESIGNATION -  1440 WSSC
 JV1421  PID         -  JV1421
 JV1421  STATE/COUNTY-  MD/MONTGOMERY
 JV1421  COUNTRY     -  US
 JV1421  USGS QUAD   -  BELTSVILLE (2016)
 JV1421
 JV1421                         *CURRENT SURVEY CONTROL
 JV1421  ______________________________________________________________________
 JV1421* NAD 83(1986) POSITION- 39 00 03.     (N) 076 59 07.     (W)   SCALED
 JV1421* NAVD 88 ORTHO HEIGHT -    43.345 (meters)      142.21  (feet) ADJUSTED
 JV1421  ______________________________________________________________________
 JV1421  GEOID HEIGHT    -        -32.033 (meters)                     GEOID18
 JV1421  DYNAMIC HEIGHT  -         43.322 (meters)      142.13  (feet) COMP
 JV1421  MODELED GRAVITY -    980,096.8   (mgal)                       NAVD 88
 JV1421
 JV1421  VERT ORDER      -  SECOND    CLASS 0
 JV1421
 JV1421.The horizontal coordinates were scaled from a map and have
 JV1421.an estimated accuracy of +/- 6 seconds.
 JV1421
 JV1421.The orthometric height was determined by differential leveling and
 JV1421.adjusted by the NATIONAL GEODETIC SURVEY
 JV1421.in June 1991.
 JV1421
 JV1421.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1421.GEOID18 height accuracy estimate available here.
 JV1421
 JV1421.Click photographs - Photos may exist for this station.
 JV1421
 JV1421.The dynamic height is computed by dividing the NAVD 88
 JV1421.geopotential number by the normal gravity value computed on the
 JV1421.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1421.degrees latitude (g = 980.6199 gals.).
 JV1421
 JV1421.The modeled gravity was interpolated from observed gravity values.
 JV1421
 JV1421;                    North         East    Units  Estimated Accuracy
 JV1421;SPC MD       -   148,100.      401,280.      MT  (+/- 180 meters Scaled)
 JV1421
 JV1421_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ280187(NAD 83)
 JV1421
 JV1421                          SUPERSEDED SURVEY CONTROL
 JV1421
 JV1421  NGVD 29 (11/26/84)   43.562  (m)          142.92   (f) ADJUSTED    2 0
 JV1421
 JV1421.Superseded values are not recommended for survey control.
 JV1421
 JV1421.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1421.See file dsdata.pdf to determine how the superseded data were derived.
 JV1421
 JV1421_MARKER: Z = SEE DESCRIPTION
 JV1421_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1421_SP_SET: CULVERT
 JV1421_STAMPING: WSSC 1440
 JV1421_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1421
 JV1421  HISTORY     - Date     Condition        Report By
 JV1421  HISTORY     - UNK      MONUMENTED       WSSC
 JV1421  HISTORY     - 1951     GOOD             CGS
 JV1421  HISTORY     - 1958     GOOD             CGS
 JV1421
 JV1421                          STATION DESCRIPTION
 JV1421
 JV1421'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1421'NEAR CLIFTON PARK VILLAGE.
 JV1421'SOUTHEAST OF CLIFTON PARK VILLAGE, MONTGOMERY COUNTY, ON THE
 JV1421'SOUTH SIDE OF STATE HIGHWAY 320 AT A POINT ABOUT 0.2 MILE WEST OF
 JV1421'THE JUNCTION OF NEW HAMPSHIRE AVENUE, AT THE FIRST CULVERT WEST
 JV1421'OF THE BRIDGECARRYING STATE HIGHWAY 320 OVER NORTHWEST
 JV1421'BRANCH, AND ON THE EAST END OF THE SOUTH HEAD WALL.  A WASHINGTON
 JV1421'SUBURBAN SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED
 JV1421'WSSC 1440.
 JV1421
 JV1421                          STATION RECOVERY (1958)
 JV1421
 JV1421'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV1421'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1420 ***********************************************************************
 JV1420  DESIGNATION -  1441 WSSC
 JV1420  PID         -  JV1420
 JV1420  STATE/COUNTY-  MD/MONTGOMERY
 JV1420  COUNTRY     -  US
 JV1420  USGS QUAD   -  BELTSVILLE (2016)
 JV1420
 JV1420                         *CURRENT SURVEY CONTROL
 JV1420  ______________________________________________________________________
 JV1420* NAD 83(1986) POSITION- 39 00 03.     (N) 076 59 21.     (W)   SCALED
 JV1420* NAVD 88 ORTHO HEIGHT -    52.624 (meters)      172.65  (feet) ADJUSTED
 JV1420  ______________________________________________________________________
 JV1420  GEOID HEIGHT    -        -32.027 (meters)                     GEOID18
 JV1420  DYNAMIC HEIGHT  -         52.595 (meters)      172.56  (feet) COMP
 JV1420  MODELED GRAVITY -    980,095.5   (mgal)                       NAVD 88
 JV1420
 JV1420  VERT ORDER      -  SECOND    CLASS 0
 JV1420
 JV1420.The horizontal coordinates were scaled from a map and have
 JV1420.an estimated accuracy of +/- 6 seconds.
 JV1420
 JV1420.The orthometric height was determined by differential leveling and
 JV1420.adjusted by the NATIONAL GEODETIC SURVEY
 JV1420.in June 1991.
 JV1420
 JV1420.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1420.GEOID18 height accuracy estimate available here.
 JV1420
 JV1420.Click photographs - Photos may exist for this station.
 JV1420
 JV1420.The dynamic height is computed by dividing the NAVD 88
 JV1420.geopotential number by the normal gravity value computed on the
 JV1420.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1420.degrees latitude (g = 980.6199 gals.).
 JV1420
 JV1420.The modeled gravity was interpolated from observed gravity values.
 JV1420
 JV1420;                    North         East    Units  Estimated Accuracy
 JV1420;SPC MD       -   148,100.      400,940.      MT  (+/- 180 meters Scaled)
 JV1420
 JV1420_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ277187(NAD 83)
 JV1420
 JV1420                          SUPERSEDED SURVEY CONTROL
 JV1420
 JV1420  NGVD 29 (11/26/84)   52.838  (m)          173.35   (f) ADJUSTED    2 0
 JV1420
 JV1420.Superseded values are not recommended for survey control.
 JV1420
 JV1420.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1420.See file dsdata.pdf to determine how the superseded data were derived.
 JV1420
 JV1420_MARKER: Z = SEE DESCRIPTION
 JV1420_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1420_SP_SET: CULVERT
 JV1420_STAMPING: WSSC 1441
 JV1420_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1420
 JV1420  HISTORY     - Date     Condition        Report By
 JV1420  HISTORY     - UNK      MONUMENTED       WSSC
 JV1420  HISTORY     - 1951     GOOD             CGS
 JV1420  HISTORY     - 1958     GOOD             CGS
 JV1420
 JV1420                          STATION DESCRIPTION
 JV1420
 JV1420'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1420'NEAR CLIFTON PARK VILLAGE.
 JV1420'SOUTHEAST OF CLIFTON PARK VILLAGE, MONTGOMERY COUNTY, ON THE
 JV1420'SOUTH SIDE OF STATE HIGHWAY 320 AT A POINT ABOUT 0.4 MILE WEST OF
 JV1420'THE JUNCTION OF NEW HAMPSHIRE AVENUE, AT THE SECOND CULVERT WEST
 JV1420'OF THE BRIDGE CARRYING STATE HIGHWAY 320 OVER NORTHWEST BRANCH,
 JV1420'AND ON THE EAST END OF THE SOUTH HEAD WALL.  A WASHINGTON
 JV1420'SUBURBAN SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED WSSC
 JV1420'1441.
 JV1420
 JV1420                          STATION RECOVERY (1958)
 JV1420
 JV1420'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV1420'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1350 ***********************************************************************
 HV1350  DESIGNATION -  1456 WSSC
 HV1350  PID         -  HV1350
 HV1350  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1350  COUNTRY     -  US
 HV1350  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1350
 HV1350                         *CURRENT SURVEY CONTROL
 HV1350  ______________________________________________________________________
 HV1350* NAD 83(1986) POSITION- 38 55 58.     (N) 076 56 11.     (W)   SCALED
 HV1350* NAVD 88 ORTHO HEIGHT -     3.87  (+/-2cm)       12.7   (feet) VERTCON3
 HV1350  ______________________________________________________________________
 HV1350  GEOID HEIGHT    -        -32.205 (meters)                     GEOID18
 HV1350  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1350
 HV1350.The horizontal coordinates were scaled from a map and have
 HV1350.an estimated accuracy of +/- 6 seconds.
 HV1350
 HV1350.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1350.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1350
 HV1350.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1350.GEOID18 height accuracy estimate available here.
 HV1350
 HV1350.The vertical order pertains to the NGVD 29 superseded value.
 HV1350
 HV1350.Click photographs - Photos may exist for this station.
 HV1350
 HV1350;                    North         East    Units  Estimated Accuracy
 HV1350;SPC MD       -   140,550.      405,520.      MT  (+/- 180 meters Scaled)
 HV1350
 HV1350_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ321110(NAD 83)
 HV1350
 HV1350                          SUPERSEDED SURVEY CONTROL
 HV1350
 HV1350  NGVD 29 (11/26/84)    4.105  (m)           13.47   (f) ADJUSTED    2 0
 HV1350
 HV1350.Superseded values are not recommended for survey control.
 HV1350
 HV1350.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1350.See file dsdata.pdf to determine how the superseded data were derived.
 HV1350
 HV1350_MARKER: Z = SEE DESCRIPTION
 HV1350_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1350_SP_SET: CULVERT
 HV1350_STAMPING: WSSC 1456
 HV1350_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1350
 HV1350  HISTORY     - Date     Condition        Report By
 HV1350  HISTORY     - UNK      MONUMENTED       WSSC
 HV1350  HISTORY     - 1944     GOOD             WSSC
 HV1350
 HV1350                          STATION DESCRIPTION
 HV1350
 HV1350'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1350'0.5 MI S FROM BLADENSBURG.
 HV1350'ABOUT 1/2 MILE SOUTH OF DEFENCE HIGHWAY, ON THE BALTIMORE AND
 HV1350'OHIO RAILROAD (SHEPHERDS BRANCH), AT A 6-FOOT CONCRETE PIPE
 HV1350'CULVERT UNDER THE TRACK, AND IN THE TOP OF THE NORTHEAST HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1351 ***********************************************************************
 HV1351  DESIGNATION -  1457 WSSC
 HV1351  PID         -  HV1351
 HV1351  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1351  COUNTRY     -  US
 HV1351  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1351
 HV1351                         *CURRENT SURVEY CONTROL
 HV1351  ______________________________________________________________________
 HV1351* NAD 83(1986) POSITION- 38 56 12.     (N) 076 56 18.     (W)   SCALED
 HV1351* NAVD 88 ORTHO HEIGHT -     1.62  (+/-2cm)        5.3   (feet) VERTCON3
 HV1351  ______________________________________________________________________
 HV1351  GEOID HEIGHT    -        -32.194 (meters)                     GEOID18
 HV1351  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1351
 HV1351.The horizontal coordinates were scaled from a map and have
 HV1351.an estimated accuracy of +/- 6 seconds.
 HV1351
 HV1351.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1351.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1351
 HV1351.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1351.GEOID18 height accuracy estimate available here.
 HV1351
 HV1351.The vertical order pertains to the NGVD 29 superseded value.
 HV1351
 HV1351.Click photographs - Photos may exist for this station.
 HV1351
 HV1351;                    North         East    Units  Estimated Accuracy
 HV1351;SPC MD       -   140,980.      405,350.      MT  (+/- 180 meters Scaled)
 HV1351
 HV1351_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ319115(NAD 83)
 HV1351
 HV1351                          SUPERSEDED SURVEY CONTROL
 HV1351
 HV1351  NGVD 29 (11/26/84)    1.847  (m)            6.06   (f) ADJUSTED    2 0
 HV1351
 HV1351.Superseded values are not recommended for survey control.
 HV1351
 HV1351.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1351.See file dsdata.pdf to determine how the superseded data were derived.
 HV1351
 HV1351_MARKER: B = BOLT
 HV1351_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1351_SP_SET: OAK TREE ROOT
 HV1351_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1351
 HV1351  HISTORY     - Date     Condition        Report By
 HV1351  HISTORY     - UNK      MONUMENTED       WSSC
 HV1351  HISTORY     - 1944     GOOD             WSSC
 HV1351
 HV1351                          STATION DESCRIPTION
 HV1351
 HV1351'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1351'AT BLADENSBURG.
 HV1351'ON THE BALTIMORE AND OHIO RAILROAD (SHEPHERDS BRANCH), ABOUT
 HV1351'900 FEET SOUTH OF DEFENSE HIGHWAY, 65 FEET EAST OF THE TRACK,
 HV1351'AT 30-INCH TWIN OAK TREES IN THE FENCE LINE, AND IN THE NORTHWEST
 HV1351'ROOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2698 ***********************************************************************
 JV2698  DESIGNATION -  1458 WSSC
 JV2698  PID         -  JV2698
 JV2698  STATE/COUNTY-  MD/MONTGOMERY
 JV2698  COUNTRY     -  US
 JV2698  USGS QUAD   -  KENSINGTON (2016)
 JV2698
 JV2698                         *CURRENT SURVEY CONTROL
 JV2698  ______________________________________________________________________
 JV2698* NAD 83(1986) POSITION- 39 01 47.     (N) 077 04 34.     (W)   SCALED
 JV2698* NAVD 88 ORTHO HEIGHT -    92.40  (+/-2cm)      303.1   (feet) VERTCON3
 JV2698  ______________________________________________________________________
 JV2698  GEOID HEIGHT    -        -31.872 (meters)                     GEOID18
 JV2698  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2698
 JV2698.The horizontal coordinates were scaled from a map and have
 JV2698.an estimated accuracy of +/- 6 seconds.
 JV2698
 JV2698.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2698.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2698
 JV2698.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2698.GEOID18 height accuracy estimate available here.
 JV2698
 JV2698.The vertical order pertains to the NGVD 29 superseded value.
 JV2698
 JV2698.Click photographs - Photos may exist for this station.
 JV2698
 JV2698;                    North         East    Units  Estimated Accuracy
 JV2698;SPC MD       -   151,310.      393,410.      MT  (+/- 180 meters Scaled)
 JV2698
 JV2698_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ202221(NAD 83)
 JV2698
 JV2698                          SUPERSEDED SURVEY CONTROL
 JV2698
 JV2698  NGVD 29 (11/26/84)   92.622  (m)          303.88   (f) ADJUSTED    2 0
 JV2698
 JV2698.Superseded values are not recommended for survey control.
 JV2698
 JV2698.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2698.See file dsdata.pdf to determine how the superseded data were derived.
 JV2698
 JV2698_MARKER: B = BOLT
 JV2698_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2698_SP_SET: FOUNDATION
 JV2698_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2698
 JV2698  HISTORY     - Date     Condition        Report By
 JV2698  HISTORY     - UNK      MONUMENTED       WSSC
 JV2698  HISTORY     - 1944     GOOD             CGS
 JV2698  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV2698
 JV2698                          STATION DESCRIPTION
 JV2698
 JV2698'DESCRIBED BY COAST AND GEODETIC SURVEY 1944
 JV2698'AT KENSINGTON.
 JV2698'AT THE INTERSECTION OF CONNECTICUT AVENUE AND HOWARD AVENUE, AT
 JV2698'A STANDARD OIL SERVICE STATION, AND IN THE WEST CORNER OF THE
 JV2698'BRICK FOUNDATION.
 JV2698
 JV2698                          STATION RECOVERY (1951)
 JV2698
 JV2698'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV2698'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0623 ***********************************************************************
 HV0623  DESIGNATION -  1464
 HV0623  PID         -  HV0623
 HV0623  STATE/COUNTY-  MD/CHARLES
 HV0623  COUNTRY     -  US
 HV0623  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV0623
 HV0623                         *CURRENT SURVEY CONTROL
 HV0623  ______________________________________________________________________
 HV0623* NAD 83(1986) POSITION- 38 21 49.     (N) 076 58 51.     (W)   SCALED
 HV0623* NAVD 88 ORTHO HEIGHT -    14.605 (meters)       47.92  (feet) ADJUSTED
 HV0623  ______________________________________________________________________
 HV0623  GEOID HEIGHT    -        -33.417 (meters)                     GEOID18
 HV0623  DYNAMIC HEIGHT  -         14.596 (meters)       47.89  (feet) COMP
 HV0623  MODELED GRAVITY -    980,005.8   (mgal)                       NAVD 88
 HV0623
 HV0623  VERT ORDER      -  FIRST     CLASS II
 HV0623
 HV0623.The horizontal coordinates were scaled from a map and have
 HV0623.an estimated accuracy of +/- 6 seconds.
 HV0623
 HV0623.The orthometric height was determined by differential leveling and
 HV0623.adjusted by the NATIONAL GEODETIC SURVEY
 HV0623.in June 1991.
 HV0623
 HV0623.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0623.GEOID18 height accuracy estimate available here.
 HV0623
 HV0623.Click photographs - Photos may exist for this station.
 HV0623
 HV0623.The dynamic height is computed by dividing the NAVD 88
 HV0623.geopotential number by the normal gravity value computed on the
 HV0623.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0623.degrees latitude (g = 980.6199 gals.).
 HV0623
 HV0623.The modeled gravity was interpolated from observed gravity values.
 HV0623
 HV0623;                    North         East    Units  Estimated Accuracy
 HV0623;SPC MD       -    77,360.      401,680.      MT  (+/- 180 meters Scaled)
 HV0623
 HV0623_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH269480(NAD 83)
 HV0623
 HV0623                          SUPERSEDED SURVEY CONTROL
 HV0623
 HV0623  NGVD 29 (11/26/84)   14.849  (m)           48.72   (f) ADJUSTED    1 2
 HV0623
 HV0623.Superseded values are not recommended for survey control.
 HV0623
 HV0623.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0623.See file dsdata.pdf to determine how the superseded data were derived.
 HV0623
 HV0623_MARKER: DD = SURVEY DISK
 HV0623_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0623_SP_SET: BRIDGE ABUTMENT
 HV0623_STAMPING: USED PBM 1943 STA NO 1464
 HV0623_MARK LOGO: USACE
 HV0623_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0623
 HV0623  HISTORY     - Date     Condition        Report By
 HV0623  HISTORY     - 1943     MONUMENTED       DOD
 HV0623  HISTORY     - 1971     GOOD             NGS
 HV0623
 HV0623                          STATION DESCRIPTION
 HV0623
 HV0623'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0623'2.2 MI SW FROM NEWBURG.
 HV0623'ABOUT 0.2 MILE NORTHWEST ALONG STATE HIGHWAY 257 FROM THE POST
 HV0623'OFFICE AT NEWBURG, THENCE 1.95 MILES SOUTHWEST ALONG U.S. HIGHWAY
 HV0623'301, 0.1 MILE WEST OF THE TOLL GATE FOR THE HARRY W. NICE MEMORIAL
 HV0623'BRIDGE, AT THE SOUTHEAST CORNER AND ON THE SOUTH END OF THE EAST
 HV0623'ABUTMENT OF THE HIGHWAY BRIDGE OVER THE POTOMAC RIVER, 12 FEET
 HV0623'SOUTH OF THE CENTER LINE OF THE HIGHWAY AND 6 INCHES ABOVE THE
 HV0623'LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8890 ***********************************************************************
 HV8890  DESIGNATION -  1464 RESET
 HV8890  PID         -  HV8890
 HV8890  STATE/COUNTY-  MD/CHARLES
 HV8890  COUNTRY     -  US
 HV8890  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV8890
 HV8890                         *CURRENT SURVEY CONTROL
 HV8890  ______________________________________________________________________
 HV8890* NAD 83(1986) POSITION- 38 21 49.44   (N) 076 58 50.44   (W)   HD_HELD1
 HV8890* NAVD 88 ORTHO HEIGHT -    15.27  (meters)       50.1   (feet) RESET
 HV8890  ______________________________________________________________________
 HV8890  GEOID HEIGHT    -        -33.417 (meters)                     GEOID18
 HV8890  VERT ORDER      -  THIRD
 HV8890
 HV8890.The horizontal coordinates were determined by differentially corrected
 HV8890.hand held GPS observations or other comparable positioning techniques
 HV8890.and have an estimated accuracy of +/- 3 meters.
 HV8890
 HV8890.The orthometric height was computed from unverified reset data.
 HV8890
 HV8890.No vertical observational check was made to the station.
 HV8890
 HV8890.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8890.GEOID18 height accuracy estimate available here.
 HV8890
 HV8890.Click photographs - Photos may exist for this station.
 HV8890
 HV8890;                    North         East    Units  Estimated Accuracy
 HV8890;SPC MD       -    77,377.6     401,688.7     MT  (+/- 3 meters HH1 GPS) 
 HV8890
 HV8890_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2695648030(NAD 83)
 HV8890
 HV8890                          SUPERSEDED SURVEY CONTROL
 HV8890
 HV8890  NGVD 29 (11/18/05)   15.51   (m)           50.9    (f) RESET       3  
 HV8890
 HV8890.Superseded values are not recommended for survey control.
 HV8890
 HV8890.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8890.See file dsdata.pdf to determine how the superseded data were derived.
 HV8890
 HV8890_MARKER: DV = VERTICAL CONTROL DISK
 HV8890_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV8890_SP_SET: BRIDGE ABUTMENT
 HV8890_STAMPING: 1464 USE RESET 1986
 HV8890_MARK LOGO: NGS
 HV8890_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8890
 HV8890  HISTORY     - Date     Condition        Report By
 HV8890  HISTORY     - 1986     MONUMENTED       NGS
 HV8890
 HV8890                          STATION DESCRIPTION
 HV8890
 HV8890'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 HV8890'3.5 KM (2.15 MI) SW FROM NEWBURG.
 HV8890'LOCATED AT THE EAST END OF THE U.S. HIGHWAY 301 BRIDGE OVER THE
 HV8890'POTOMAC RIVER, ON THE SOUTH PARAPET WALL OVER THE EAST ABUTMENT, 4.1
 HV8890'M (13.5 FT) SOUTH FROM THE CENTER OF THE HIGHWAY, 4.2 M (13.8 FT)
 HV8890'NORTH FROM THE CENTER OF THE TOP STEP OF A SET OF STEPS LEADING DOWN
 HV8890'BELOW THE BRIDGE, 1.7 M (5.6 FT) WEST FROM THE EAST END OF THE SOUTH
 HV8890'PARAPET WALL AND 0.4 M (1.3 FT) EAST FROM THE FIRST EXPANSION JOINT
 HV8890'FROM THE EAST END OF THE BRIDGE.
 HV8890'THE MARK IS 1.0 M ABOVE U.S. HIGHWAY 301.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1435 ***********************************************************************
 JV1435  DESIGNATION -  1475 WSSC
 JV1435  PID         -  JV1435
 JV1435  STATE/COUNTY-  MD/MONTGOMERY
 JV1435  COUNTRY     -  US
 JV1435  USGS QUAD   -  BELTSVILLE (2016)
 JV1435
 JV1435                         *CURRENT SURVEY CONTROL
 JV1435  ______________________________________________________________________
 JV1435* NAD 83(1986) POSITION- 39 02 21.     (N) 076 59 54.     (W)   SCALED
 JV1435* NAVD 88 ORTHO HEIGHT -   104.783 (meters)      343.78  (feet) ADJUSTED
 JV1435  ______________________________________________________________________
 JV1435  GEOID HEIGHT    -        -31.990 (meters)                     GEOID18
 JV1435  DYNAMIC HEIGHT  -        104.727 (meters)      343.59  (feet) COMP
 JV1435  MODELED GRAVITY -    980,089.4   (mgal)                       NAVD 88
 JV1435
 JV1435  VERT ORDER      -  SECOND    CLASS 0
 JV1435
 JV1435.The horizontal coordinates were scaled from a map and have
 JV1435.an estimated accuracy of +/- 6 seconds.
 JV1435
 JV1435.The orthometric height was determined by differential leveling and
 JV1435.adjusted by the NATIONAL GEODETIC SURVEY
 JV1435.in June 1991.
 JV1435
 JV1435.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1435.GEOID18 height accuracy estimate available here.
 JV1435
 JV1435.Click photographs - Photos may exist for this station.
 JV1435
 JV1435.The dynamic height is computed by dividing the NAVD 88
 JV1435.geopotential number by the normal gravity value computed on the
 JV1435.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1435.degrees latitude (g = 980.6199 gals.).
 JV1435
 JV1435.The modeled gravity was interpolated from observed gravity values.
 JV1435
 JV1435;                    North         East    Units  Estimated Accuracy
 JV1435;SPC MD       -   152,350.      400,140.      MT  (+/- 180 meters Scaled)
 JV1435
 JV1435_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ270230(NAD 83)
 JV1435
 JV1435                          SUPERSEDED SURVEY CONTROL
 JV1435
 JV1435  NGVD 29 (11/26/84)  104.992  (m)          344.46   (f) ADJUSTED    2 0
 JV1435
 JV1435.Superseded values are not recommended for survey control.
 JV1435
 JV1435.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1435.See file dsdata.pdf to determine how the superseded data were derived.
 JV1435
 JV1435_MARKER: Z = SEE DESCRIPTION
 JV1435_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1435_SP_SET: CULVERT
 JV1435_STAMPING: WSSC 1475
 JV1435_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1435
 JV1435  HISTORY     - Date     Condition        Report By
 JV1435  HISTORY     - UNK      MONUMENTED       WSSC
 JV1435  HISTORY     - 1952     GOOD             CGS
 JV1435
 JV1435                          STATION DESCRIPTION
 JV1435
 JV1435'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV1435'0.5 MI SW FROM WHITEOAK.
 JV1435'0.5 MILE SOUTHWEST ALONG COLESVILLE ROAD (U.S. HIGHWAY 29) FROM
 JV1435'THE JUNCTION OF NEW HAMPSHIRE AVENUE (STATE HIGHWAY 320) AT
 JV1435'WHITEOAK, MONTGOMERY COUNTY, 0.6 MILE NORTHEAST OF BURNT MILLS,
 JV1435'ABOUT 500 FEET SOUTHWEST OF THE TOP OF A HILL, AND IN THE
 JV1435'MIDDLE OF THE TOP OF THE NORTHWEST HEAD WALL OF A CULVERT.  A
 JV1435'WASHINGTON SUBURBAN SANITARY DISTRICT BRASS LAG SCREW AND
 JV1435'WASHER, STAMPED WSSC 1475.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2141 ***********************************************************************
 JV2141  DESIGNATION -  148 BORR
 JV2141  PID         -  JV2141
 JV2141  STATE/COUNTY-  MD/FREDERICK
 JV2141  COUNTRY     -  US
 JV2141  USGS QUAD   -  URBANA (2016)
 JV2141
 JV2141                         *CURRENT SURVEY CONTROL
 JV2141  ______________________________________________________________________
 JV2141* NAD 83(1986) POSITION- 39 21 59.     (N) 077 20 01.     (W)   SCALED
 JV2141* NAVD 88 ORTHO HEIGHT -   100.238 (meters)      328.86  (feet) ADJUSTED
 JV2141  ______________________________________________________________________
 JV2141  GEOID HEIGHT    -        -32.395 (meters)                     GEOID18
 JV2141  DYNAMIC HEIGHT  -        100.185 (meters)      328.69  (feet) COMP
 JV2141  MODELED GRAVITY -    980,091.6   (mgal)                       NAVD 88
 JV2141
 JV2141  VERT ORDER      -  SECOND    CLASS 0
 JV2141
 JV2141.The horizontal coordinates were scaled from a map and have
 JV2141.an estimated accuracy of +/- 6 seconds.
 JV2141
 JV2141.The orthometric height was determined by differential leveling and
 JV2141.adjusted by the NATIONAL GEODETIC SURVEY
 JV2141.in June 1991.
 JV2141
 JV2141.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2141.GEOID18 height accuracy estimate available here.
 JV2141
 JV2141.Click photographs - Photos may exist for this station.
 JV2141
 JV2141.The dynamic height is computed by dividing the NAVD 88
 JV2141.geopotential number by the normal gravity value computed on the
 JV2141.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2141.degrees latitude (g = 980.6199 gals.).
 JV2141
 JV2141.The modeled gravity was interpolated from observed gravity values.
 JV2141
 JV2141;                    North         East    Units  Estimated Accuracy
 JV2141;SPC MD       -   188,730.      371,250.      MT  (+/- 180 meters Scaled)
 JV2141
 JV2141_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ989600(NAD 83)
 JV2141
 JV2141                          SUPERSEDED SURVEY CONTROL
 JV2141
 JV2141  NGVD 29 (11/26/84)  100.455  (m)          329.58   (f) ADJUSTED    2 0
 JV2141
 JV2141.Superseded values are not recommended for survey control.
 JV2141
 JV2141.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2141.See file dsdata.pdf to determine how the superseded data were derived.
 JV2141
 JV2141_MARKER: B = BOLT
 JV2141_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2141_SP_SET: BRIDGE
 JV2141_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2141
 JV2141  HISTORY     - Date     Condition        Report By
 JV2141  HISTORY     - 1903     MONUMENTED       BORR
 JV2141  HISTORY     - 1941     GOOD             CGS
 JV2141
 JV2141                          STATION DESCRIPTION
 JV2141
 JV2141'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2141'0.8 MI W FROM IJAMSVILLE.
 JV2141'ABOUT 3/4 MILE WEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2141'THE STATION AT IJAMSVILLE, FREDERICK COUNTY, AT A BRIDGE, IN
 JV2141'THE TOP OF THE EAST STONE BRIDGE SEAT, 4 INCHES NORTH OF THE
 JV2141'CENTER LINE BETWEEN THE TRACKS, AND ABOUT 3 FEET LOWER THAN THE
 JV2141'TRACK.  A COPPER BOLT.  NOTE-- THE ELEVATION OF THIS BENCH MARK
 JV2141'IS DERIVED FROM SECOND-ORDER LEVELING IN MAY 1935 BY ONE OF OUR
 JV2141'FIELD PARTIES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1445 ***********************************************************************
 JV1445  DESIGNATION -  1481 WSSC
 JV1445  PID         -  JV1445
 JV1445  STATE/COUNTY-  MD/MONTGOMERY
 JV1445  COUNTRY     -  US
 JV1445  USGS QUAD   -  BELTSVILLE (2016)
 JV1445
 JV1445                         *CURRENT SURVEY CONTROL
 JV1445  ______________________________________________________________________
 JV1445* NAD 83(1986) POSITION- 39 03 48.     (N) 076 57 56.     (W)   SCALED
 JV1445* NAVD 88 ORTHO HEIGHT -   116.392 (meters)      381.86  (feet) ADJUSTED
 JV1445  ______________________________________________________________________
 JV1445  GEOID HEIGHT    -        -32.032 (meters)                     GEOID18
 JV1445  DYNAMIC HEIGHT  -        116.330 (meters)      381.66  (feet) COMP
 JV1445  MODELED GRAVITY -    980,089.1   (mgal)                       NAVD 88
 JV1445
 JV1445  VERT ORDER      -  SECOND    CLASS 0
 JV1445
 JV1445.The horizontal coordinates were scaled from a map and have
 JV1445.an estimated accuracy of +/- 6 seconds.
 JV1445
 JV1445.The orthometric height was determined by differential leveling and
 JV1445.adjusted by the NATIONAL GEODETIC SURVEY
 JV1445.in June 1991.
 JV1445
 JV1445.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1445.GEOID18 height accuracy estimate available here.
 JV1445
 JV1445.Click photographs - Photos may exist for this station.
 JV1445
 JV1445.The dynamic height is computed by dividing the NAVD 88
 JV1445.geopotential number by the normal gravity value computed on the
 JV1445.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1445.degrees latitude (g = 980.6199 gals.).
 JV1445
 JV1445.The modeled gravity was interpolated from observed gravity values.
 JV1445
 JV1445;                    North         East    Units  Estimated Accuracy
 JV1445;SPC MD       -   155,040.      402,980.      MT  (+/- 180 meters Scaled)
 JV1445
 JV1445_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ299256(NAD 83)
 JV1445
 JV1445                          SUPERSEDED SURVEY CONTROL
 JV1445
 JV1445  NGVD 29 (11/26/84)  116.611  (m)          382.58   (f) ADJUSTED    2 0
 JV1445
 JV1445.Superseded values are not recommended for survey control.
 JV1445
 JV1445.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1445.See file dsdata.pdf to determine how the superseded data were derived.
 JV1445
 JV1445_MARKER: Z = SEE DESCRIPTION
 JV1445_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1445_SP_SET: CULVERT
 JV1445_STAMPING: WSSC 1481
 JV1445_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1445
 JV1445  HISTORY     - Date     Condition        Report By
 JV1445  HISTORY     - UNK      MONUMENTED       WSSC
 JV1445  HISTORY     - 1951     GOOD             CGS
 JV1445
 JV1445                          STATION DESCRIPTION
 JV1445
 JV1445'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1445'1 MI SW FROM FAIRLAND.
 JV1445'1.0 MILE SOUTHWEST ALONG COLUMBIA ROAD (STATE HIGHWAY 196) FROM
 JV1445'THE JUNCTION OF FAIRLAND ROAD AT FAIRLAND, MONTGOMERY COUNTY, AT
 JV1445'THE JUNCTION OF BELTSVILLE ROAD, IN THE SOUTH ANGLE, AND IN THE
 JV1445'CENTER OF THE TOP OF THE HEAD WALL AT THE SOUTHEAST END OF A
 JV1445'CULVERT.  A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS LAG SCREW
 JV1445'AND WASHER, STAMPED WSSC 1481.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1449 ***********************************************************************
 JV1449  DESIGNATION -  1482 WSSC
 JV1449  PID         -  JV1449
 JV1449  STATE/COUNTY-  MD/MONTGOMERY
 JV1449  COUNTRY     -  US
 JV1449  USGS QUAD   -  BELTSVILLE (2016)
 JV1449
 JV1449                         *CURRENT SURVEY CONTROL
 JV1449  ______________________________________________________________________
 JV1449* NAD 83(1986) POSITION- 39 04 15.     (N) 076 57 39.     (W)   SCALED
 JV1449* NAVD 88 ORTHO HEIGHT -   116.760 (meters)      383.07  (feet) ADJUSTED
 JV1449  ______________________________________________________________________
 JV1449  GEOID HEIGHT    -        -32.037 (meters)                     GEOID18
 JV1449  DYNAMIC HEIGHT  -        116.697 (meters)      382.86  (feet) COMP
 JV1449  MODELED GRAVITY -    980,087.7   (mgal)                       NAVD 88
 JV1449
 JV1449  VERT ORDER      -  SECOND    CLASS 0
 JV1449
 JV1449.The horizontal coordinates were scaled from a map and have
 JV1449.an estimated accuracy of +/- 6 seconds.
 JV1449
 JV1449.The orthometric height was determined by differential leveling and
 JV1449.adjusted by the NATIONAL GEODETIC SURVEY
 JV1449.in June 1991.
 JV1449
 JV1449.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1449.GEOID18 height accuracy estimate available here.
 JV1449
 JV1449.Click photographs - Photos may exist for this station.
 JV1449
 JV1449.The dynamic height is computed by dividing the NAVD 88
 JV1449.geopotential number by the normal gravity value computed on the
 JV1449.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1449.degrees latitude (g = 980.6199 gals.).
 JV1449
 JV1449.The modeled gravity was interpolated from observed gravity values.
 JV1449
 JV1449;                    North         East    Units  Estimated Accuracy
 JV1449;SPC MD       -   155,870.      403,390.      MT  (+/- 180 meters Scaled)
 JV1449
 JV1449_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ303264(NAD 83)
 JV1449
 JV1449                          SUPERSEDED SURVEY CONTROL
 JV1449
 JV1449  NGVD 29 (11/26/84)  116.973  (m)          383.77   (f) ADJUSTED    2 0
 JV1449
 JV1449.Superseded values are not recommended for survey control.
 JV1449
 JV1449.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1449.See file dsdata.pdf to determine how the superseded data were derived.
 JV1449
 JV1449_MARKER: Z = SEE DESCRIPTION
 JV1449_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1449_SP_SET: CULVERT
 JV1449_STAMPING: WSSC 1482
 JV1449_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1449
 JV1449  HISTORY     - Date     Condition        Report By
 JV1449  HISTORY     - UNK      MONUMENTED       WSSC
 JV1449  HISTORY     - 1952     GOOD             CGS
 JV1449
 JV1449                          STATION DESCRIPTION
 JV1449
 JV1449'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV1449'0.5 MI S FROM FAIRLAND.
 JV1449'0.4 MILE SOUTHWEST ALONG COLUMBIA ROAD (STATE HIGHWAY 196) FROM
 JV1449'THE JUNCTION OF FAIRLAND ROAD AT FAIRLAND, MONTGOMERY COUNTY,
 JV1449'ABOUT 18 YARDS SOUTHWEST OF THE FAIRLAND 30 MILE LIMIT SIGN, AND
 JV1449'IN THE MIDDLE OF THE TOP OF THE SOUTHEAST HEAD WALL OF A CULVERT.
 JV1449'A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS LAG SCREW AND
 JV1449'WASHER, STAMPED WSSC 1482.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2746 ***********************************************************************
 JV2746  DESIGNATION -  1485 WSSC
 JV2746  PID         -  JV2746
 JV2746  STATE/COUNTY-  MD/MONTGOMERY
 JV2746  COUNTRY     -  US
 JV2746  USGS QUAD   -  KENSINGTON (2016)
 JV2746
 JV2746                         *CURRENT SURVEY CONTROL
 JV2746  ______________________________________________________________________
 JV2746* NAD 83(1986) POSITION- 39 01 48.     (N) 077 01 19.     (W)   SCALED
 JV2746* NAVD 88 ORTHO HEIGHT -   110.50  (+/-2cm)      362.5   (feet) VERTCON3
 JV2746  ______________________________________________________________________
 JV2746  GEOID HEIGHT    -        -31.957 (meters)                     GEOID18
 JV2746  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2746
 JV2746.The horizontal coordinates were scaled from a map and have
 JV2746.an estimated accuracy of +/- 6 seconds.
 JV2746
 JV2746.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2746.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2746
 JV2746.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2746.GEOID18 height accuracy estimate available here.
 JV2746
 JV2746.The vertical order pertains to the NGVD 29 superseded value.
 JV2746
 JV2746.Click photographs - Photos may exist for this station.
 JV2746
 JV2746;                    North         East    Units  Estimated Accuracy
 JV2746;SPC MD       -   151,340.      398,100.      MT  (+/- 180 meters Scaled)
 JV2746
 JV2746_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ249220(NAD 83)
 JV2746
 JV2746                          SUPERSEDED SURVEY CONTROL
 JV2746
 JV2746  NGVD 29 (11/26/84)  110.720  (m)          363.25   (f) ADJUSTED    2 0
 JV2746
 JV2746.Superseded values are not recommended for survey control.
 JV2746
 JV2746.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2746.See file dsdata.pdf to determine how the superseded data were derived.
 JV2746
 JV2746_MARKER: B = BOLT
 JV2746_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2746_SP_SET: STEP
 JV2746_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2746
 JV2746  HISTORY     - Date     Condition        Report By
 JV2746  HISTORY     - UNK      MONUMENTED       WSSC
 JV2746  HISTORY     - 1939     GOOD             WSSC
 JV2746  HISTORY     - 1951     GOOD             CGS
 JV2746
 JV2746                          STATION DESCRIPTION
 JV2746
 JV2746'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2746'0.9 MI NW FROM FOUR CORNERS.
 JV2746'ON OLD BLADENSBURG ROAD, AT A HOUSE WITH A SEMI-CIRCULAR DRIVE
 JV2746'ON THE WEST SIDE OF THE ROAD, AND IN THE FACE OF THE BOTTOM
 JV2746'CONCRETE STEP.  NOTE-- IT WAS REPORTED IN 1951 THAT QUITE
 JV2746'EVIDENTLY SETTLEMENT HAS OCCURRED.
 JV2746
 JV2746                          STATION RECOVERY (1951)
 JV2746
 JV2746'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV2746'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2743 ***********************************************************************
 JV2743  DESIGNATION -  1486 WSSC
 JV2743  PID         -  JV2743
 JV2743  STATE/COUNTY-  MD/MONTGOMERY
 JV2743  COUNTRY     -  US
 JV2743  USGS QUAD   -  KENSINGTON (2016)
 JV2743
 JV2743                         *CURRENT SURVEY CONTROL
 JV2743  ______________________________________________________________________
 JV2743* NAD 83(1986) POSITION- 39 02 11.     (N) 077 01 52.     (W)   SCALED
 JV2743* NAVD 88 ORTHO HEIGHT -   103.313 (meters)      338.95  (feet) ADJUSTED
 JV2743  ______________________________________________________________________
 JV2743  GEOID HEIGHT    -        -31.938 (meters)                     GEOID18
 JV2743  DYNAMIC HEIGHT  -        103.257 (meters)      338.77  (feet) COMP
 JV2743  MODELED GRAVITY -    980,085.2   (mgal)                       NAVD 88
 JV2743
 JV2743  VERT ORDER      -  SECOND    CLASS 0
 JV2743
 JV2743.The horizontal coordinates were scaled from a map and have
 JV2743.an estimated accuracy of +/- 6 seconds.
 JV2743
 JV2743.The orthometric height was determined by differential leveling and
 JV2743.adjusted by the NATIONAL GEODETIC SURVEY
 JV2743.in June 1991.
 JV2743
 JV2743.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2743.GEOID18 height accuracy estimate available here.
 JV2743
 JV2743.Click photographs - Photos may exist for this station.
 JV2743
 JV2743.The dynamic height is computed by dividing the NAVD 88
 JV2743.geopotential number by the normal gravity value computed on the
 JV2743.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2743.degrees latitude (g = 980.6199 gals.).
 JV2743
 JV2743.The modeled gravity was interpolated from observed gravity values.
 JV2743
 JV2743;                    North         East    Units  Estimated Accuracy
 JV2743;SPC MD       -   152,050.      397,310.      MT  (+/- 180 meters Scaled)
 JV2743
 JV2743_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ242227(NAD 83)
 JV2743
 JV2743                          SUPERSEDED SURVEY CONTROL
 JV2743
 JV2743  NGVD 29 (11/26/84)  103.537  (m)          339.69   (f) ADJUSTED    2 0
 JV2743
 JV2743.Superseded values are not recommended for survey control.
 JV2743
 JV2743.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2743.See file dsdata.pdf to determine how the superseded data were derived.
 JV2743
 JV2743_MARKER: Z = SEE DESCRIPTION
 JV2743_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2743_SP_SET: BRIDGE
 JV2743_STAMPING: WSSC 1486
 JV2743_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2743
 JV2743  HISTORY     - Date     Condition        Report By
 JV2743  HISTORY     - UNK      MONUMENTED       WSSC
 JV2743  HISTORY     - 1952     GOOD             CGS
 JV2743
 JV2743                          STATION DESCRIPTION
 JV2743
 JV2743'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV2743'1.7 MI NW FROM FOUR CORNERS.
 JV2743'ABOUT 1.7 MILES NORTHWEST ALONG OLD BLADENSBURG ROAD (STATE
 JV2743'HIGHWAY 193) FROM THE JUNCTION OF COLESVILLE ROAD (U.S. HIGHWAY
 JV2743'29) AT FOUR CORNERS, MONTGOMERY COUNTY, 1.3 MILES EAST OF WHEATON,
 JV2743'AT THE BRIDGE OVER SLIGO BRANCH, AND IN THE TOP OF THE SOUTHWEST
 JV2743'WING-WALL.  A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS LAG
 JV2743'SCREW AND WASHER STAMPED WSSC 1486.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2747 ***********************************************************************
 JV2747  DESIGNATION -  1487 WSSC
 JV2747  PID         -  JV2747
 JV2747  STATE/COUNTY-  MD/MONTGOMERY
 JV2747  COUNTRY     -  US
 JV2747  USGS QUAD   -  KENSINGTON (2016)
 JV2747
 JV2747                         *CURRENT SURVEY CONTROL
 JV2747  ______________________________________________________________________
 JV2747* NAD 83(1986) POSITION- 39 01 26.     (N) 077 01 02.     (W)   SCALED
 JV2747* NAVD 88 ORTHO HEIGHT -   110.507 (meters)      362.56  (feet) ADJUSTED
 JV2747  ______________________________________________________________________
 JV2747  GEOID HEIGHT    -        -31.968 (meters)                     GEOID18
 JV2747  DYNAMIC HEIGHT  -        110.447 (meters)      362.36  (feet) COMP
 JV2747  MODELED GRAVITY -    980,085.9   (mgal)                       NAVD 88
 JV2747
 JV2747  VERT ORDER      -  SECOND    CLASS 0
 JV2747
 JV2747.The horizontal coordinates were scaled from a map and have
 JV2747.an estimated accuracy of +/- 6 seconds.
 JV2747
 JV2747.The orthometric height was determined by differential leveling and
 JV2747.adjusted by the NATIONAL GEODETIC SURVEY
 JV2747.in June 1991.
 JV2747
 JV2747.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2747.GEOID18 height accuracy estimate available here.
 JV2747
 JV2747.Click photographs - Photos may exist for this station.
 JV2747
 JV2747.The dynamic height is computed by dividing the NAVD 88
 JV2747.geopotential number by the normal gravity value computed on the
 JV2747.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2747.degrees latitude (g = 980.6199 gals.).
 JV2747
 JV2747.The modeled gravity was interpolated from observed gravity values.
 JV2747
 JV2747;                    North         East    Units  Estimated Accuracy
 JV2747;SPC MD       -   150,660.      398,510.      MT  (+/- 180 meters Scaled)
 JV2747
 JV2747_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ253213(NAD 83)
 JV2747
 JV2747                          SUPERSEDED SURVEY CONTROL
 JV2747
 JV2747  NGVD 29 (11/26/84)  110.724  (m)          363.27   (f) ADJUSTED    2 0
 JV2747
 JV2747.Superseded values are not recommended for survey control.
 JV2747
 JV2747.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2747.See file dsdata.pdf to determine how the superseded data were derived.
 JV2747
 JV2747_MARKER: Z = SEE DESCRIPTION
 JV2747_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2747_SP_SET: LIGHT
 JV2747_STAMPING: WSSC 1487
 JV2747_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2747
 JV2747  HISTORY     - Date     Condition        Report By
 JV2747  HISTORY     - UNK      MONUMENTED       WSSC
 JV2747  HISTORY     - 1952     GOOD             CGS
 JV2747
 JV2747                          STATION DESCRIPTION
 JV2747
 JV2747'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV2747'0.3 MI NW FROM FOUR CORNERS.
 JV2747'ABOUT 0.3 MILE NORTHWEST ALONG OLD BLADENSBURG ROAD (U.S. HIGHWAY
 JV2747'29) AT FOUR CORNERS, MONTGOMERY COUNTY, AT THE ALEXANDER SCHOOL
 JV2747'(STREET NUMBER 10315), BETWEEN THE WALK AND THE DRIVEWAY,
 JV2747'AND IN THE WEST CORNER OF A SQUARE CONCRETE LIGHT BASE.  A
 JV2747'WASHINGTON SANITARY DISTRICT BRASS LAG SCREW AND WASHER,
 JV2747'STAMPED WSSC 1487.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1180 ***********************************************************************
 JV1180  DESIGNATION -  15
 JV1180  PID         -  JV1180
 JV1180  STATE/COUNTY-  MD/BALTIMORE
 JV1180  COUNTRY     -  US
 JV1180  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1180
 JV1180                         *CURRENT SURVEY CONTROL
 JV1180  ______________________________________________________________________
 JV1180* NAD 83(1986) POSITION- 39 26 56.6    (N) 076 38 06.5    (W)   HD_HELD2
 JV1180* NAVD 88 ORTHO HEIGHT -   111.762 (meters)      366.67  (feet) ADJUSTED
 JV1180  ______________________________________________________________________
 JV1180  GEOID HEIGHT    -        -32.438 (meters)                     GEOID18
 JV1180  DYNAMIC HEIGHT  -        111.703 (meters)      366.48  (feet) COMP
 JV1180  MODELED GRAVITY -    980,099.4   (mgal)                       NAVD 88
 JV1180
 JV1180  VERT ORDER      -  SECOND    CLASS 0
 JV1180
 JV1180.The horizontal coordinates were established by autonomous hand held GPS
 JV1180.observations and have an estimated accuracy of +/- 10 meters.
 JV1180
 JV1180.The orthometric height was determined by differential leveling and
 JV1180.adjusted by the NATIONAL GEODETIC SURVEY
 JV1180.in June 1991.
 JV1180
 JV1180.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1180.GEOID18 height accuracy estimate available here.
 JV1180
 JV1180.Click photographs - Photos may exist for this station.
 JV1180
 JV1180.The dynamic height is computed by dividing the NAVD 88
 JV1180.geopotential number by the normal gravity value computed on the
 JV1180.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1180.degrees latitude (g = 980.6199 gals.).
 JV1180
 JV1180.The modeled gravity was interpolated from observed gravity values.
 JV1180
 JV1180;                    North         East    Units  Estimated Accuracy
 JV1180;SPC MD       -   197,922.      431,406.      MT  (+/- 10 meters HH2 GPS)
 JV1180
 JV1180_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5930667886(NAD 83)
 JV1180
 JV1180                          SUPERSEDED SURVEY CONTROL
 JV1180
 JV1180  NGVD 29 (11/26/84)  111.980  (m)          367.39   (f) ADJUSTED    2 0
 JV1180
 JV1180.Superseded values are not recommended for survey control.
 JV1180
 JV1180.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1180.See file dsdata.pdf to determine how the superseded data were derived.
 JV1180
 JV1180_MARKER: B = BOLT
 JV1180_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV1180_SP_SET: BRIDGE ABUTMENT
 JV1180_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1180_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1180+SATELLITE: SATELLITE OBSERVATIONS - November 12, 2022
 JV1180
 JV1180  HISTORY     - Date     Condition        Report By
 JV1180  HISTORY     - UNK      MONUMENTED       PRR
 JV1180  HISTORY     - 1942     GOOD             CGS
 JV1180  HISTORY     - 20221112 GOOD             WTBALL
 JV1180
 JV1180                          STATION DESCRIPTION
 JV1180
 JV1180'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1180'0.6 MI S FROM PADONIA.
 JV1180'0.6 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV1180'AT PADONIA, BALTIMORE COUNTY, 0.4 MILE NORTH OF MILEPOST 12, IN
 JV1180'THE TOP OF THE NORTHEAST WING OF BRIDGE 12.32, AND 12 FEET EAST
 JV1180'OF THE CENTERLINE OF THE EAST TRACK.  A COPPER BOLT.
 JV1180
 JV1180                          STATION RECOVERY (2022)
 JV1180
 JV1180'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2022 (JMB)
 JV1180'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7830 ***********************************************************************
 DR7830  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7830  DESIGNATION -  15
 DR7830  PID         -  DR7830
 DR7830  STATE/COUNTY-  MD/QUEEN ANNES
 DR7830  COUNTRY     -  US
 DR7830  USGS QUAD   -  CENTREVILLE (2017)
 DR7830
 DR7830                         *CURRENT SURVEY CONTROL
 DR7830  ______________________________________________________________________
 DR7830* NAD 83(2011) POSITION- 39 03 36.47750(N) 076 03 10.31355(W)   ADJUSTED
 DR7830* NAD 83(2011) ELLIP HT-   -16.905 (meters)        (02/02/22)   ADJUSTED
 DR7830* NAD 83(2011) EPOCH   -  2010.00
 DR7830* NAVD 88 ORTHO HEIGHT -    16.88  (meters)       55.4   (feet) GPS OBS
 DR7830  ______________________________________________________________________
 DR7830  GEOID HEIGHT    -        -33.785 (meters)                     GEOID18
 DR7830  NAD 83(2011) X  -  1,195,277.177 (meters)                     COMP
 DR7830  NAD 83(2011) Y  - -4,812,908.463 (meters)                     COMP
 DR7830  NAD 83(2011) Z  -  3,997,492.149 (meters)                     COMP
 DR7830  LAPLACE CORR    -         -3.76  (seconds)                    DEFLEC18
 DR7830
 DR7830  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7830  Standards:
 DR7830         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7830            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7830  -------------------------------------------------------------------
 DR7830  NETWORK    0.83   1.86           0.37   0.30   0.95     -0.15734061
 DR7830  -------------------------------------------------------------------
 DR7830  Click here for local accuracies and other accuracy information.
 DR7830
 DR7830.The horizontal coordinates were established by GPS observations
 DR7830.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7830
 DR7830.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7830.been affixed to the stable North American tectonic plate. See 
 DR7830.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7830
 DR7830.The horizontal coordinates are valid at the epoch date displayed above
 DR7830.which is a decimal equivalence of Year/Month/Day.
 DR7830
 DR7830.The orthometric height was determined by GPS observations and a
 DR7830.high-resolution geoid model using precise GPS observation and
 DR7830.processing techniques.
 DR7830
 DR7830.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7830.GEOID18 height accuracy estimate available here.
 DR7830
 DR7830.Click photographs - Photos may exist for this station.
 DR7830
 DR7830.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7830
 DR7830.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7830
 DR7830.The ellipsoidal height was determined by GPS observations
 DR7830.and is referenced to NAD 83.
 DR7830
 DR7830. The following values were computed from the NAD 83(2011) position.
 DR7830
 DR7830;                    North         East     Units Scale Factor Converg.
 DR7830;SPC MD       -   155,106.828   481,972.258   MT  0.99995501   +0 35 40.0
 DR7830;SPC MD       -   508,879.65  1,581,270.65   sFT  0.99995501   +0 35 40.0
 DR7830;UTM  18      - 4,323,977.034   408,906.736   MT  0.99970217   -0 39 48.6
 DR7830
 DR7830!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7830!SPC MD       -   1.00000265  x   0.99995501  =   0.99995766
 DR7830!UTM  18      -   1.00000265  x   0.99970217  =   0.99970482
 DR7830
 DR7830_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0890623977(NAD 83)
 DR7830
 DR7830                          SUPERSEDED SURVEY CONTROL
 DR7830
 DR7830.No superseded survey control is available for this station.
 DR7830
 DR7830_MARKER: DD = SURVEY DISK
 DR7830_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7830_STAMPING: 15
 DR7830_MARK LOGO: MD-035
 DR7830_PROJECTION: RECESSED 9 CENTIMETERS
 DR7830_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7830+STABILITY: SURFACE MOTION
 DR7830_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7830+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 DR7830
 DR7830  HISTORY     - Date     Condition        Report By
 DR7830  HISTORY     - UNK      MONUMENTED       MD-035
 DR7830  HISTORY     - 20210309 GOOD             MDSHA
 DR7830  HISTORY     - 20250731 GOOD             PROFLN
 DR7830
 DR7830                          STATION DESCRIPTION
 DR7830
 DR7830'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7830'THE MARK IS LOCATED ABOUT 1.4 MI (2.3 KM) NORTHEAST OF CENTREVILLE,
 DR7830'6.7 MILES SOUTHWEST OF CHURCH HILL AND 6.4 MI (10.3 KM) NORTHWEST OF
 DR7830'RUTHSBURG.
 DR7830'
 DR7830'TO REACH FROM THE JUNCTION OF MD 305 AND MD 213, GO NORTH ON MD 213
 DR7830'FOR 0.8 MI (12.42 KM) TO THE INTERSECTION OF SPANIARD NECT ROAD AND
 DR7830'THE MARK ON THE LEFT IN THE WEST ANGLE OF THE INTERSECTION.
 DR7830'
 DR7830'THE MARK IS 193.9 FT (59.1 M) NORTHEAST OF A UTILITY POLE WITH NO
 DR7830'NUMBER, 42.2 FT (12.9 M) SOUTHWEST OF THE CENTERLINE OF SPANIARD NECK
 DR7830'ROAD, 41.5 FT (12.6 M) NORTHWEST OF THE CENTERLINE OF STATE ROUTE 212,
 DR7830'13.7 FT (4.2 M) WEST OF THE SOUTHWEST END OF A 18 INCH (46 CM)
 DR7830'CORRUGATED METAL PIPE CULVERT, 13.6 FT (4.1 M) NORTHWEST OF A C AND P
 DR7830'UTILITY POLE NUMBERED 642 AND SET IN THE TOP OF A 12-IN (30 CM) ROUND
 DR7830'CONCRETE MONUMENT.
 DR7830
 DR7830                          STATION RECOVERY (2025)
 DR7830
 DR7830'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR7830'PLACED UNDER A 6 INCH (15 CM) DIAMETER VALVE BOX.  THE MARK IS 13 FT
 DR7830'(4.0 M) WEST-NORTHWEST OF OVERHEAD POWER LINES, 5.5 FT (1.7 M)
 DR7830'SOUTH-SOUTHWEST OF THE CENTERLINE EXTENDED OF EAST-BOUND WEXFORD DRIVE
 DR7830'(ENTRANCE TO NORTH BROOK), 1 FT (0.3 M) HIGHER THAN THE HIGHWAY AND
 DR7830'SPANIARD NECK ROAD, AT THE EDGE OF A PLOWED FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2273 ***********************************************************************
 HU2273  DESIGNATION -  15 KEM
 HU2273  PID         -  HU2273
 HU2273  STATE/COUNTY-  MD/WICOMICO
 HU2273  COUNTRY     -  US
 HU2273  USGS QUAD   -  NANTICOKE (2016)
 HU2273
 HU2273                         *CURRENT SURVEY CONTROL
 HU2273  ______________________________________________________________________
 HU2273* NAD 83(1986) POSITION- 38 17 23.4    (N) 075 52 41.1    (W)   HD_HELD2
 HU2273* NAVD 88 ORTHO HEIGHT -     2.402 (meters)        7.88  (feet) ADJUSTED
 HU2273  ______________________________________________________________________
 HU2273  GEOID HEIGHT    -        -35.727 (meters)                     GEOID18
 HU2273  DYNAMIC HEIGHT  -          2.401 (meters)        7.88  (feet) COMP
 HU2273  MODELED GRAVITY -    979,992.5   (mgal)                       NAVD 88
 HU2273
 HU2273  VERT ORDER      -  SECOND    CLASS I
 HU2273
 HU2273.The horizontal coordinates were established by autonomous hand held GPS
 HU2273.observations and have an estimated accuracy of +/- 10 meters.
 HU2273
 HU2273.The orthometric height was determined by differential leveling and
 HU2273.adjusted by the NATIONAL GEODETIC SURVEY
 HU2273.in June 1991.
 HU2273
 HU2273.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2273.GEOID18 height accuracy estimate available here.
 HU2273
 HU2273.Click photographs - Photos may exist for this station.
 HU2273
 HU2273.The dynamic height is computed by dividing the NAVD 88
 HU2273.geopotential number by the normal gravity value computed on the
 HU2273.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2273.degrees latitude (g = 980.6199 gals.).
 HU2273
 HU2273.The modeled gravity was interpolated from observed gravity values.
 HU2273
 HU2273;                    North         East    Units  Estimated Accuracy
 HU2273;SPC MD       -    69,777.      498,149.      MT  (+/- 10 meters HH2 GPS)
 HU2273
 HU2273_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2321038338(NAD 83)
 HU2273
 HU2273                          SUPERSEDED SURVEY CONTROL
 HU2273
 HU2273  NGVD 29 (06/12/91)    2.656  (m)            8.71   (f) ADJUSTED    2 1
 HU2273
 HU2273.Superseded values are not recommended for survey control.
 HU2273
 HU2273.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2273.See file dsdata.pdf to determine how the superseded data were derived.
 HU2273
 HU2273_MARKER: DB = BENCH MARK DISK
 HU2273_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2273_STAMPING: 15 KEM 1977
 HU2273_MARK LOGO: USGS
 HU2273_PROJECTION: FLUSH
 HU2273_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2273_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2273+STABILITY: SURFACE MOTION
 HU2273_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2273+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2019
 HU2273
 HU2273  HISTORY     - Date     Condition        Report By
 HU2273  HISTORY     - 1977     MONUMENTED       USGS
 HU2273  HISTORY     - 19900301 GOOD             NGS
 HU2273  HISTORY     - 20190514 GOOD             PROFLN
 HU2273
 HU2273                          STATION DESCRIPTION
 HU2273
 HU2273'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2273'1.8 KM (1.12 MI) NORTHEASTERLY ALONG STATE HIGHWAY 349 FROM ITS
 HU2273'JUNCTION WITH TEXAS ROAD IN BIVALVE, THENCE 2.5 KM (1.55 MI)
 HU2273'SOUTHERLY ALONG JESTERVILLE ROAD, 18.3 M (60.04 FT) SOUTHEAST OF THE
 HU2273'SOUTHEAST CORNER OF A HOUSE, 8.5 M (27.89 FT) WEST OF AND LEVEL WITH
 HU2273'THE ROAD CENTER, 4.0 M (13.12 FT) NORTH OF THE CENTER OF A DRIVEWAY,
 HU2273'0.4 M (1.31 FT) EAST OF UTILITY POLE NUMBER 38841 90458, AND IN A
 HU2273'CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2273
 HU2273                          STATION RECOVERY (2019)
 HU2273
 HU2273'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2273'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5879 ***********************************************************************
 JV5879  DESIGNATION -  150 METERS 1966
 JV5879  PID         -  JV5879
 JV5879  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5879  COUNTRY     -  US
 JV5879  USGS QUAD   -  LAUREL (2016)
 JV5879
 JV5879                         *CURRENT SURVEY CONTROL
 JV5879  ______________________________________________________________________
 JV5879* NAD 83(1991) POSITION- 39 01 45.51797(N) 076 49 25.75924(W)   ADJUSTED
 JV5879* NAVD 88 ORTHO HEIGHT -    47.02  (+/-2cm)      154.3   (feet) VERTCON3
 JV5879  ______________________________________________________________________
 JV5879  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 JV5879  LAPLACE CORR    -         -5.28  (seconds)                    DEFLEC18
 JV5879  HORZ ORDER      -  FIRST
 JV5879  VERT ORDER      -  THIRD ? (See Below)
 JV5879
 JV5879.The horizontal coordinates were established by classical geodetic methods
 JV5879.and adjusted by the National Geodetic Survey in January 1992.
 JV5879
 JV5879.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5879.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5879
 JV5879.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5879.GEOID18 height accuracy estimate available here.
 JV5879
 JV5879.The vertical order pertains to the NGVD 29 superseded value.
 JV5879
 JV5879.Click photographs - Photos may exist for this station.
 JV5879
 JV5879.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5879
 JV5879. The following values were computed from the NAD 83(1991) position.
 JV5879
 JV5879;                    North         East     Units Scale Factor Converg.
 JV5879;SPC MD       -   151,274.707   415,254.647   MT  0.99995343   +0 06 38.1
 JV5879;SPC MD       -   496,307.10  1,362,381.29   sFT  0.99995343   +0 06 38.1
 JV5879;UTM  18      - 4,321,611.746   342,131.654   MT  0.99990688   -1 08 55.4
 JV5879
 JV5879!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5879!SPC MD       -   0.99999770  x   0.99995343  =   0.99995113
 JV5879!UTM  18      -   0.99999770  x   0.99990688  =   0.99990458
 JV5879
 JV5879:                Primary Azimuth Mark                     Grid Az
 JV5879:SPC MD       -  1800 METERS 1966                         150 24 29.6
 JV5879:UTM  18      -  1800 METERS 1966                         151 40 03.1
 JV5879
 JV5879_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4213121611(NAD 83)
 JV5879
 JV5879|---------------------------------------------------------------------|
 JV5879| PID    Reference Object                     Distance      Geod. Az  |
 JV5879|                                                           dddmmss.s |
 JV5879| JV5863 1800 METERS 1966                    APPROX. 1.6 KM 1503107.7 |
 JV5879| JV5876 ASTRO PIER 1966                     209.724 METERS 21721     |
 JV5879| JV5875 SAT TRACK STA 002                   240.355 METERS 21812     |
 JV5879|---------------------------------------------------------------------|
 JV5879
 JV5879                          SUPERSEDED SURVEY CONTROL
 JV5879
 JV5879  NAD 83(1986)-  39 01 45.51613(N)    076 49 25.77023(W) AD(       ) 1
 JV5879  NAD 27      -  39 01 45.12160(N)    076 49 26.87448(W) AD(       ) 1
 JV5879  NGVD 29              47.24   (m)          155.0    (f) LEVELING    3  
 JV5879
 JV5879.Superseded values are not recommended for survey control.
 JV5879
 JV5879.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5879.See file dsdata.pdf to determine how the superseded data were derived.
 JV5879
 JV5879_MARKER: Z = SEE DESCRIPTION
 JV5879_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5879_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5879+STABILITY: SURFACE MOTION
 JV5879
 JV5879  HISTORY     - Date     Condition        Report By
 JV5879  HISTORY     - 1966     MONUMENTED       CGS
 JV5879  HISTORY     - 1979     GOOD             NGS
 JV5879
 JV5879                          STATION DESCRIPTION
 JV5879
 JV5879'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV5879'THE STATION IS LOCATED ABOUT 3-1/2 MILES NORTHWEST OF BOWIE,
 JV5879'MARYLAND, 3-1/2 MILES EAST OF BELTSVILLE, MARYLAND, 3 MILES
 JV5879'SOUTHEAST OF LAUREL, MARYLAND AND 0.05 MILE NORTH OF THE NORTHWEST
 JV5879'CORNER OF THE NORTH-SOUTH RUNWAY OF THE BELTSVILLE AGRICULTURE
 JV5879'RESEARCH CENTER AIRPORT.
 JV5879'
 JV5879'TO REACH THE STATION FROM THE TRAFFIC LIGHT AT THE INTERSECTION
 JV5879'OF U.S. HIGHWAY 1 AND POWDER MILL RD AT BELTSVILLE, MARYLAND, GO
 JV5879'EAST ON POWDER MILL RD FOR 0.45 MILE TO THE JUNCTION OF EDMONSTON
 JV5879'ROAD AND THE ENTRANCE TO THE AGRICULTURAL RESEARCH CENTER.
 JV5879'CONTINUE EAST ON POWDER MILL RD, ENTERING THE AGRICULTURAL RESEARCH
 JV5879'CENTER FOR 2.8 MILES TO THE INTERSECTION OF POWDER MILL RD AND
 JV5879'THE BALTIMORE-WASHINGTON PARKWAY (BELTSVILLE EXIT).
 JV5879'CONTINUE EAST ON POWDER MILL RD, UNDER THE PARKWAY FOR 0.3
 JV5879'MILE TO THE JUNCTION OF S.C.S. ROAD AND SIGNS ARC AIRPORT AND C
 JV5879'AND GS SATELLITE TRI.  CONTINUE EAST ON POWDER MILL RD FOR
 JV5879'0.35 MILE TO THE JUNCTION OF SPRINGFIELD RD AND SIGNS ARC
 JV5879'AIRPORT AND C AND GS SATELLITE TRI.  TURN RIGHT AND GO
 JV5879'SOUTHERLY ON SPRINGFIELD RD FOR 0.75 MILE TO A GATE ON THE
 JV5879'LEFT, ENTRANCE TO THE ARC AIRPORT.  TURN LEFT, PASS
 JV5879'THROUGH THE GATE AND GO SOUTHEAST ON A BLACK TOP ROAD FOR 0.15
 JV5879'MILE TO THE NORTH EDGE OF THE EAST-WEST RUNWAY OF THE AIRPORT.
 JV5879'TURN LEFT AND GO EAST ON THE NORTH EDGE OF THE RUNWAY FOR
 JV5879'0.55 MILE TO THE WEST EDGE OF THE NORTH-SOUTH RUNWAY.  TURN
 JV5879'LEFT AND GO NORTH ON THE WEST EDGE OF THE NORTH-SOUTH RUNWAY FOR
 JV5879'0.1 MILE TO THE NORTH END OF THE RUNWAY.  CONTINUE NORTH ON
 JV5879'A TRACK ROAD FOR 0.05 MILE TO THE STATION ON THE LEFT.
 JV5879'
 JV5879'THE STATION IS THE CENTER OF AN IRREGULAR SHAPED METAL TRIBRACH,
 JV5879'BOLTED TO THE TOP OF A ROUND METAL PLATE THAT IS CEMENTED TO
 JV5879'THE TOP OF A CYLINDRICAL CONCRETE MONUMENT 18 INCHES IN DIAMETER
 JV5879'AND PROJECTING 3.5 FEET ABOVE THE SURFACE OF THE GROUND.  IT
 JV5879'IS STAMPED 150 METERS.
 JV5879
 JV5879                          STATION RECOVERY (1979)
 JV5879
 JV5879'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (CGG)
 JV5879'THE STATION MARK WAS RECOVERED AS DESCRIBED BY L.G. BURDINE IN 1966
 JV5879'AND FOUND IN GOOD CONDITION.
 JV5879'
 JV5879'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5879'3 MILES SOUTHEAST OF LAUREL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1020 ***********************************************************************
 JV1020  DESIGNATION -  1513
 JV1020  PID         -  JV1020
 JV1020  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1020  COUNTRY     -  US
 JV1020  USGS QUAD   -  BELTSVILLE (2016)
 JV1020
 JV1020                         *CURRENT SURVEY CONTROL
 JV1020  ______________________________________________________________________
 JV1020* NAD 83(1986) POSITION- 39 03 24.     (N) 076 55 21.     (W)   SCALED
 JV1020* NAVD 88 ORTHO HEIGHT -    79.346 (meters)      260.32  (feet) ADJUSTED
 JV1020  ______________________________________________________________________
 JV1020  GEOID HEIGHT    -        -32.115 (meters)                     GEOID18
 JV1020  DYNAMIC HEIGHT  -         79.304 (meters)      260.18  (feet) COMP
 JV1020  MODELED GRAVITY -    980,097.8   (mgal)                       NAVD 88
 JV1020
 JV1020  VERT ORDER      -  SECOND    CLASS I
 JV1020
 JV1020.The horizontal coordinates were scaled from a map and have
 JV1020.an estimated accuracy of +/- 6 seconds.
 JV1020
 JV1020.The orthometric height was determined by differential leveling and
 JV1020.adjusted by the NATIONAL GEODETIC SURVEY
 JV1020.in June 1991.
 JV1020
 JV1020.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1020.GEOID18 height accuracy estimate available here.
 JV1020
 JV1020.Click photographs - Photos may exist for this station.
 JV1020
 JV1020.The dynamic height is computed by dividing the NAVD 88
 JV1020.geopotential number by the normal gravity value computed on the
 JV1020.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1020.degrees latitude (g = 980.6199 gals.).
 JV1020
 JV1020.The modeled gravity was interpolated from observed gravity values.
 JV1020
 JV1020;                    North         East    Units  Estimated Accuracy
 JV1020;SPC MD       -   154,300.      406,710.      MT  (+/- 180 meters Scaled)
 JV1020
 JV1020_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ336248(NAD 83)
 JV1020
 JV1020                          SUPERSEDED SURVEY CONTROL
 JV1020
 JV1020  NGVD 29 (11/26/84)   79.559  (m)          261.02   (f) ADJUSTED    2 0
 JV1020
 JV1020.Superseded values are not recommended for survey control.
 JV1020
 JV1020.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1020.See file dsdata.pdf to determine how the superseded data were derived.
 JV1020
 JV1020_MARKER: Z = SEE DESCRIPTION
 JV1020_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1020_STAMPING: WSSC 1513
 JV1020_MARK LOGO: WSSC
 JV1020_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1020_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1020_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1020+SATELLITE: SATELLITE OBSERVATIONS - January 30, 2002
 JV1020
 JV1020  HISTORY     - Date     Condition        Report By
 JV1020  HISTORY     - UNK      MONUMENTED       WSSC
 JV1020  HISTORY     - 1951     GOOD             CGS
 JV1020  HISTORY     - 20020130 GOOD             MDSHA
 JV1020
 JV1020                          STATION DESCRIPTION
 JV1020
 JV1020'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1020'1.8 MI NW FROM BELTSVILLE.
 JV1020'1-3/4 MILES NORTHWEST ALONG STATE HIGHWAY 212 AND MONTGOMERY
 JV1020'ROAD, FROM BELTSVILLE, PRINCE GEORGES COUNTY, IN THE SOUTHWEST
 JV1020'ANGLE OF THE T INTERSECTION OF BIGLOW ROAD AND MONTGOMERY ROAD
 JV1020'(OLD GUNPOWDER ROAD), 28.6 FEET WESTWARD FROM A NAIL IN THE SOUTH
 JV1020'SIDE OF A. AND C.B.P. CO. POLE NO. 319676, 20.3 FEET
 JV1020'NORTHWESTWARD FROM A 22-INCH OAK TREE, 15.4 FEET SOUTHWARD FROM
 JV1020'AN 18-INCH OAK TREE, AND10.7 FEET NORTHEASTWARD FROM A NAIL IN A
 JV1020'ROOT OF A 20-INCH OAK TREE.  A WASHINGTON SUBURBAN SANITARY
 JV1020'DISTRICT LAG SCREW AND WASHER SET IN THE TOP OF AN IRON PIPE
 JV1020'ABOUT FLUSH WITH THE SURFACE OF THE GROUND.
 JV1020
 JV1020                          STATION RECOVERY (2002)
 JV1020
 JV1020'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV1020'THE STATION WAS RECOVERED IN GOOD CONDITION.  0.1 MI (0.16 KM) SOUTH
 JV1020'ALONG U.S.HIGHWAY 1 FROM THE RAILROAD DEPOT AT BELTSVILLE, TO THE
 JV1020'INTERSECTION OF POWDER MILL ROAD, THENCE 1.45 MI (2.33 KM) WEST TO THE
 JV1020'INTERSECTION WITH OLD GUN POWDER ROAD AND THENCE 0.4 MI (0.64 KM)
 JV1020'NORTH ALONG OLD GUN POWDER TO THE STATION ON THE LEFT, IN THE
 JV1020'SOUTHWEST ANGLE OF A T-INTERSECTION WITH DENIM ROAD.  THE STATION IS A
 JV1020'WSSC LAG SCREW AND WASHER SET IN THE TOP OF A 2 INCH (5 CM) METAL PIPE
 JV1020'DRIVEN INTO THE GROUND, 58.2 FT (17.7 M) NORTHWEST OF THE CENTER LINE
 JV1020'OF OLD GUN POWDER ROAD, 48.0 FT (14.6 M) SOUTHWEST OF THE CENTER OF
 JV1020'DENIM ROAD, 29.3 FT (8.9 M) WEST OF POWER POLE NUMBER 252368,  15.5 FT
 JV1020'(4.7 M) SOUTH OF A 15 INCH (38 CM) OAK TREE WITH BLAZE, 64.2 FT (19.6
 JV1020'M) WEST OF THE JUNCTION OF THE TWO ROADS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1414 ***********************************************************************
 HV1414  DESIGNATION -  1526 WSSC
 HV1414  PID         -  HV1414
 HV1414  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1414  COUNTRY     -  US
 HV1414  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1414
 HV1414                         *CURRENT SURVEY CONTROL
 HV1414  ______________________________________________________________________
 HV1414* NAD 83(1986) POSITION- 38 58 33.     (N) 076 58 41.     (W)   SCALED
 HV1414* NAVD 88 ORTHO HEIGHT -    39.01  (+/-2cm)      128.0   (feet) VERTCON3
 HV1414  ______________________________________________________________________
 HV1414  GEOID HEIGHT    -        -32.060 (meters)                     GEOID18
 HV1414  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1414
 HV1414.The horizontal coordinates were scaled from a map and have
 HV1414.an estimated accuracy of +/- 6 seconds.
 HV1414
 HV1414.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1414.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1414
 HV1414.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1414.GEOID18 height accuracy estimate available here.
 HV1414
 HV1414.The vertical order pertains to the NGVD 29 superseded value.
 HV1414
 HV1414.Click photographs - Photos may exist for this station.
 HV1414
 HV1414;                    North         East    Units  Estimated Accuracy
 HV1414;SPC MD       -   145,320.      401,900.      MT  (+/- 180 meters Scaled)
 HV1414
 HV1414_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ286159(NAD 83)
 HV1414
 HV1414                          SUPERSEDED SURVEY CONTROL
 HV1414
 HV1414  NGVD 29 (11/26/84)   39.225  (m)          128.69   (f) ADJUSTED    2 0
 HV1414
 HV1414.Superseded values are not recommended for survey control.
 HV1414
 HV1414.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1414.See file dsdata.pdf to determine how the superseded data were derived.
 HV1414
 HV1414_MARKER: Z = SEE DESCRIPTION
 HV1414_SETTING: 0 = UNSPECIFIED SETTING
 HV1414_STAMPING: WSSC 1526
 HV1414_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1414
 HV1414  HISTORY     - Date     Condition        Report By
 HV1414  HISTORY     - UNK      MONUMENTED       WSSC
 HV1414  HISTORY     - 1939     GOOD             WSSC
 HV1414  HISTORY     - 1952     MARK NOT FOUND   CGS
 HV1414
 HV1414                          STATION DESCRIPTION
 HV1414
 HV1414'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1414'0.5 MI N FROM CHILLUM MANOR.
 HV1414'ON RIGGS ROAD, ABOUT 1/4 MILE NORTH OF THE INTERSECTION OF
 HV1414'EAST-WEST HIGHWAY, 150 FEET NORTH OF OLD RIGGS SCHOOL, ON THE
 HV1414'EAST SIDE OF THE ROAD, AT A SHARP BEND ON TOP OF A HILL, AND
 HV1414'NEAR THREE 8-INCH CEDAR TREES. LAG SCREW AND WASHER.
 HV1414
 HV1414                          STATION RECOVERY (1952)
 HV1414
 HV1414'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 HV1414'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1413 ***********************************************************************
 HV1413  DESIGNATION -  1527 WSSC
 HV1413  PID         -  HV1413
 HV1413  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1413  COUNTRY     -  US
 HV1413  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1413
 HV1413                         *CURRENT SURVEY CONTROL
 HV1413  ______________________________________________________________________
 HV1413* NAD 83(1986) POSITION- 38 58 09.     (N) 076 59 05.     (W)   SCALED
 HV1413* NAVD 88 ORTHO HEIGHT -    32.06  (+/-2cm)      105.2   (feet) VERTCON3
 HV1413  ______________________________________________________________________
 HV1413  GEOID HEIGHT    -        -32.053 (meters)                     GEOID18
 HV1413  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1413
 HV1413.The horizontal coordinates were scaled from a map and have
 HV1413.an estimated accuracy of +/- 6 seconds.
 HV1413
 HV1413.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1413.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1413
 HV1413.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1413.GEOID18 height accuracy estimate available here.
 HV1413
 HV1413.The vertical order pertains to the NGVD 29 superseded value.
 HV1413
 HV1413.Click photographs - Photos may exist for this station.
 HV1413
 HV1413;                    North         East    Units  Estimated Accuracy
 HV1413;SPC MD       -   144,580.      401,320.      MT  (+/- 180 meters Scaled)
 HV1413
 HV1413_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ280152(NAD 83)
 HV1413
 HV1413                          SUPERSEDED SURVEY CONTROL
 HV1413
 HV1413  NGVD 29 (11/26/84)   32.278  (m)          105.90   (f) ADJUSTED    2 0
 HV1413
 HV1413.Superseded values are not recommended for survey control.
 HV1413
 HV1413.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1413.See file dsdata.pdf to determine how the superseded data were derived.
 HV1413
 HV1413_MARKER: Z = SEE DESCRIPTION
 HV1413_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1413_SP_SET: STEP
 HV1413_STAMPING: WSSC 1527
 HV1413_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1413
 HV1413  HISTORY     - Date     Condition        Report By
 HV1413  HISTORY     - UNK      MONUMENTED       WSSC
 HV1413  HISTORY     - 1939     GOOD             WSSC
 HV1413
 HV1413                          STATION DESCRIPTION
 HV1413
 HV1413'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1413'AT CHILLUM MANOR.
 HV1413'ON RIGGS ROAD, NEAR THE JUNCTION OF SARGENT ROAD, 75 FEET WEST
 HV1413'OF SARGENT ROAD, ON THE NORTH SIDE OF RIGGS ROAD, AT A HOUSE,
 HV1413'AND IN THE WEST END OF THE CONCRETE STEP IN FRONT OF THE
 HV1413'HOUSE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1416 ***********************************************************************
 HV1416  DESIGNATION -  1528 WSSC
 HV1416  PID         -  HV1416
 HV1416  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1416  COUNTRY     -  US
 HV1416  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1416
 HV1416                         *CURRENT SURVEY CONTROL
 HV1416  ______________________________________________________________________
 HV1416* NAD 83(1986) POSITION- 38 59 32.     (N) 076 58 20.     (W)   SCALED
 HV1416* NAVD 88 ORTHO HEIGHT -    26.263 (meters)       86.16  (feet) ADJUSTED
 HV1416  ______________________________________________________________________
 HV1416  GEOID HEIGHT    -        -32.060 (meters)                     GEOID18
 HV1416  DYNAMIC HEIGHT  -         26.249 (meters)       86.12  (feet) COMP
 HV1416  MODELED GRAVITY -    980,101.9   (mgal)                       NAVD 88
 HV1416
 HV1416  VERT ORDER      -  SECOND    CLASS 0
 HV1416
 HV1416.The horizontal coordinates were scaled from a map and have
 HV1416.an estimated accuracy of +/- 6 seconds.
 HV1416
 HV1416.The orthometric height was determined by differential leveling and
 HV1416.adjusted by the NATIONAL GEODETIC SURVEY
 HV1416.in June 1991.
 HV1416
 HV1416.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1416.GEOID18 height accuracy estimate available here.
 HV1416
 HV1416.Click photographs - Photos may exist for this station.
 HV1416
 HV1416.The dynamic height is computed by dividing the NAVD 88
 HV1416.geopotential number by the normal gravity value computed on the
 HV1416.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1416.degrees latitude (g = 980.6199 gals.).
 HV1416
 HV1416.The modeled gravity was interpolated from observed gravity values.
 HV1416
 HV1416;                    North         East    Units  Estimated Accuracy
 HV1416;SPC MD       -   147,140.      402,410.      MT  (+/- 180 meters Scaled)
 HV1416
 HV1416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ291177(NAD 83)
 HV1416
 HV1416                          SUPERSEDED SURVEY CONTROL
 HV1416
 HV1416  NGVD 29 (11/26/84)   26.491  (m)           86.91   (f) ADJUSTED    2 0
 HV1416
 HV1416.Superseded values are not recommended for survey control.
 HV1416
 HV1416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1416.See file dsdata.pdf to determine how the superseded data were derived.
 HV1416
 HV1416_MARKER: Z = SEE DESCRIPTION
 HV1416_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1416_SP_SET: BRIDGE
 HV1416_STAMPING: WSSC 1528
 HV1416_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1416
 HV1416  HISTORY     - Date     Condition        Report By
 HV1416  HISTORY     - UNK      MONUMENTED       WSSC
 HV1416  HISTORY     - 1951     GOOD             CGS
 HV1416
 HV1416                          STATION DESCRIPTION
 HV1416
 HV1416'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1416'0.9 MI S FROM ADELPHI.
 HV1416'ABOUT 0.9 MILE SOUTHWARD ALONG RIGGS ROAD (STATE HIGHWAY 212)
 HV1416'FROM THE JUNCTION OF MT. PISGAH ROAD AT ADELPHI, PRINCE
 HV1416'GEORGES COUNTY, AT RIGGS MILL, AT THE BRIDGE CARRYING RIGGS
 HV1416'ROAD OVER NORTHWEST BRANCH AT THE SOUTH END OF THE EAST PARAPET
 HV1416'WALL, 6.4 FEET NORTH OF THE END OF THE WALL, AND ON A LEDGE
 HV1416'ON THE OUTSIDE OF THE WALL.  A WASHINGTON SUBURBAN SANITARY
 HV1416'DISTRICT LAG SCREW AND WASHER, STAMPED WSSC 1528.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1417 ***********************************************************************
 HV1417  DESIGNATION -  1529 WSSC
 HV1417  PID         -  HV1417
 HV1417  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1417  COUNTRY     -  US
 HV1417  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1417
 HV1417                         *CURRENT SURVEY CONTROL
 HV1417  ______________________________________________________________________
 HV1417* NAD 83(1986) POSITION- 38 59 52.     (N) 076 58 24.     (W)   SCALED
 HV1417* NAVD 88 ORTHO HEIGHT -    50.797 (meters)      166.66  (feet) ADJUSTED
 HV1417  ______________________________________________________________________
 HV1417  GEOID HEIGHT    -        -32.054 (meters)                     GEOID18
 HV1417  DYNAMIC HEIGHT  -         50.770 (meters)      166.57  (feet) COMP
 HV1417  MODELED GRAVITY -    980,100.5   (mgal)                       NAVD 88
 HV1417
 HV1417  VERT ORDER      -  SECOND    CLASS 0
 HV1417
 HV1417.The horizontal coordinates were scaled from a map and have
 HV1417.an estimated accuracy of +/- 6 seconds.
 HV1417
 HV1417.The orthometric height was determined by differential leveling and
 HV1417.adjusted by the NATIONAL GEODETIC SURVEY
 HV1417.in June 1991.
 HV1417
 HV1417.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1417.GEOID18 height accuracy estimate available here.
 HV1417
 HV1417.Click photographs - Photos may exist for this station.
 HV1417
 HV1417.The dynamic height is computed by dividing the NAVD 88
 HV1417.geopotential number by the normal gravity value computed on the
 HV1417.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1417.degrees latitude (g = 980.6199 gals.).
 HV1417
 HV1417.The modeled gravity was interpolated from observed gravity values.
 HV1417
 HV1417;                    North         East    Units  Estimated Accuracy
 HV1417;SPC MD       -   147,760.      402,310.      MT  (+/- 180 meters Scaled)
 HV1417
 HV1417_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ291183(NAD 83)
 HV1417
 HV1417                          SUPERSEDED SURVEY CONTROL
 HV1417
 HV1417  NGVD 29 (11/26/84)   51.024  (m)          167.40   (f) ADJUSTED    2 0
 HV1417
 HV1417.Superseded values are not recommended for survey control.
 HV1417
 HV1417.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1417.See file dsdata.pdf to determine how the superseded data were derived.
 HV1417
 HV1417_MARKER: Z = SEE DESCRIPTION
 HV1417_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1417_STAMPING: WSSC 1529
 HV1417_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1417
 HV1417  HISTORY     - Date     Condition        Report By
 HV1417  HISTORY     - UNK      MONUMENTED       WSSC
 HV1417  HISTORY     - 1951     GOOD             CGS
 HV1417
 HV1417                          STATION DESCRIPTION
 HV1417
 HV1417'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1417'0.5 MI S FROM ADELPHI.
 HV1417'ABOUT 1/2 MILE SOUTH ALONG RIGGS ROAD, STATE HIGHWAY 212, FROM
 HV1417'THE JUNCTION OF MR. PISGAH ROAD AT ADELPHI, PRINCE GEORGES
 HV1417'COUNTY, 0.4 MILE NORTH OF RIGGS MILL, AT THE END OF A CURVE
 HV1417'SOUTH OF A DIRT ROAD LEADING WESTERLY, ON THE BANK AT THE EDGE
 HV1417'OF THE BRUSH ON THE WEST SIDE OF RIGGS ROAD, 4.8 FEET SE OF A
 HV1417'10-INCH PINE, 16.5 FEET NORTHWEST OF PEP CO. POLE 89553, 47.8 FEET
 HV1417'NORTHWEST ACROSS RIGGS ROAD FROM C AND P TEL. POLE 3387, AND
 HV1417'23.6 FEET WEST OF THE CENTER LINE OF THE ROAD.  A WASHINGTON
 HV1417'SUBURBAN SANITARY DISTRICT BRASS LAG SCREW AND WASHER SET IN
 HV1417'THE TOP OF A 2-INCH IRON PIPE PROJECTING ABOUT 2 INCHES ABOVE
 HV1417'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0426 ***********************************************************************
 JW0426  DESIGNATION -  153 A=RV 1313
 JW0426  PID         -  JW0426
 JW0426  STATE/COUNTY-  MD/ALLEGANY
 JW0426  COUNTRY     -  US
 JW0426  USGS QUAD   -  CUMBERLAND (2016)
 JW0426
 JW0426                         *CURRENT SURVEY CONTROL
 JW0426  ______________________________________________________________________
 JW0426* NAD 83(1986) POSITION- 39 38 59.     (N) 078 45 28.     (W)   SCALED
 JW0426* NAVD 88 ORTHO HEIGHT -   194.932 (meters)      639.54  (feet) ADJUSTED
 JW0426  ______________________________________________________________________
 JW0426  GEOID HEIGHT    -        -32.731 (meters)                     GEOID18
 JW0426  DYNAMIC HEIGHT  -        194.819 (meters)      639.17  (feet) COMP
 JW0426  MODELED GRAVITY -    980,045.3   (mgal)                       NAVD 88
 JW0426
 JW0426  VERT ORDER      -  SECOND    CLASS 0
 JW0426
 JW0426.The horizontal coordinates were scaled from a map and have
 JW0426.an estimated accuracy of +/- 6 seconds.
 JW0426
 JW0426.The orthometric height was determined by differential leveling and
 JW0426.adjusted by the NATIONAL GEODETIC SURVEY
 JW0426.in June 1991.
 JW0426
 JW0426.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0426.GEOID18 height accuracy estimate available here.
 JW0426
 JW0426.Click photographs - Photos may exist for this station.
 JW0426
 JW0426.The dynamic height is computed by dividing the NAVD 88
 JW0426.geopotential number by the normal gravity value computed on the
 JW0426.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0426.degrees latitude (g = 980.6199 gals.).
 JW0426
 JW0426.The modeled gravity was interpolated from observed gravity values.
 JW0426
 JW0426;                    North         East    Units  Estimated Accuracy
 JW0426;SPC MD       -   221,590.      249,140.      MT  (+/- 180 meters Scaled)
 JW0426
 JW0426_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD923912(NAD 83)
 JW0426
 JW0426                          SUPERSEDED SURVEY CONTROL
 JW0426
 JW0426  NGVD 29 (??/??/92)  195.127  (m)          640.18   (f) ADJ UNCH    2 0
 JW0426
 JW0426.Superseded values are not recommended for survey control.
 JW0426
 JW0426.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0426.See file dsdata.pdf to determine how the superseded data were derived.
 JW0426
 JW0426_MARKER: R = RIVET
 JW0426_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0426_SP_SET: BUILDING
 JW0426_MARK LOGO: BORR
 JW0426_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0426
 JW0426  HISTORY     - Date     Condition        Report By
 JW0426  HISTORY     - UNK      MONUMENTED       BORR
 JW0426  HISTORY     - 1935     GOOD             CGS
 JW0426  HISTORY     - 1970     GOOD             MDDT
 JW0426  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0426
 JW0426                          STATION DESCRIPTION
 JW0426
 JW0426'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0426'AT CUMBERLAND.
 JW0426'AT CUMBERLAND, ALLEGANY COUNTY, ON THE BALTIMORE AND OHIO
 JW0426'RAILROAD, AT THE SOUTHEAST CORNER OF THE QUEEN CITY HOTEL, IN THE
 JW0426'TOP OF THE CONCRETE RETAINING WALL OF THE STAIRWAY, 30 FEET WEST
 JW0426'OF THE SOUTHEAST CORNER, 25 FEET SOUTH OF THE SOUTH SIDE, ABOUT
 JW0426'50 FEET NORTH OF THE CENTER LINE OF THE NORTH MAIN TRACK, AND 0.5
 JW0426'FOOT EAST OF THE IRON RAILING CORNER POST.  A COPPER RIVET.
 JW0426
 JW0426                          STATION RECOVERY (1970)
 JW0426
 JW0426'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1970
 JW0426'RECOVERED IN GOOD CONDITION.
 JW0426
 JW0426                          STATION RECOVERY (1983)
 JW0426
 JW0426'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0426'NOT RECOVERED, CONSIDER DESTROYED, THE HOTEL HAS BEEN TORN DOWN AND
 JW0426'NEW POST OFFICE HAS BEEN BUILT AT THIS LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2150 ***********************************************************************
 JV2150  DESIGNATION -  153 BORR
 JV2150  PID         -  JV2150
 JV2150  STATE/COUNTY-  MD/FREDERICK
 JV2150  COUNTRY     -  US
 JV2150  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2150
 JV2150                         *CURRENT SURVEY CONTROL
 JV2150  ______________________________________________________________________
 JV2150* NAD 83(1986) POSITION- 39 22 09.     (N) 077 24 03.     (W)   SCALED
 JV2150* NAVD 88 ORTHO HEIGHT -    76.649 (meters)      251.47  (feet) ADJUSTED
 JV2150  ______________________________________________________________________
 JV2150  GEOID HEIGHT    -        -32.603 (meters)                     GEOID18
 JV2150  DYNAMIC HEIGHT  -         76.608 (meters)      251.34  (feet) COMP
 JV2150  MODELED GRAVITY -    980,087.3   (mgal)                       NAVD 88
 JV2150
 JV2150  VERT ORDER      -  SECOND    CLASS 0
 JV2150
 JV2150.The horizontal coordinates were scaled from a map and have
 JV2150.an estimated accuracy of +/- 6 seconds.
 JV2150
 JV2150.The orthometric height was determined by differential leveling and
 JV2150.adjusted by the NATIONAL GEODETIC SURVEY
 JV2150.in June 1991.
 JV2150
 JV2150.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2150.GEOID18 height accuracy estimate available here.
 JV2150
 JV2150.Click photographs - Photos may exist for this station.
 JV2150
 JV2150.The dynamic height is computed by dividing the NAVD 88
 JV2150.geopotential number by the normal gravity value computed on the
 JV2150.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2150.degrees latitude (g = 980.6199 gals.).
 JV2150
 JV2150.The modeled gravity was interpolated from observed gravity values.
 JV2150
 JV2150;                    North         East    Units  Estimated Accuracy
 JV2150;SPC MD       -   189,070.      365,460.      MT  (+/- 180 meters Scaled)
 JV2150
 JV2150_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ931604(NAD 83)
 JV2150
 JV2150                          SUPERSEDED SURVEY CONTROL
 JV2150
 JV2150  NGVD 29 (11/26/84)   76.870  (m)          252.20   (f) ADJUSTED    2 0
 JV2150
 JV2150.Superseded values are not recommended for survey control.
 JV2150
 JV2150.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2150.See file dsdata.pdf to determine how the superseded data were derived.
 JV2150
 JV2150_MARKER: B = BOLT
 JV2150_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2150_SP_SET: CULVERT
 JV2150_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2150_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2150+SATELLITE: SATELLITE OBSERVATIONS - September 10, 2002
 JV2150
 JV2150  HISTORY     - Date     Condition        Report By
 JV2150  HISTORY     - 1903     MONUMENTED       BORR
 JV2150  HISTORY     - 1941     GOOD             CGS
 JV2150  HISTORY     - 20020910 GOOD             POWELL
 JV2150
 JV2150                          STATION DESCRIPTION
 JV2150
 JV2150'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2150'1 MI W FROM FREDERICK JUNCTION.
 JV2150'ABOUT 1 MILE WEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2150'STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, ABOUT 50 FEET
 JV2150'WEST OF POLE 58+36, AT A CONCRETE CULVERT, IN THE TOP OF THE
 JV2150'SOUTH COPING, 12 INCHES FROM THE WEST END, 6 INCHES FROM THE
 JV2150'SOUTH SIDE, AND ABOUT 6 FEET LOWER THAN THE TRACK.  A COPPER
 JV2150'BOLT.  NOTE-- THE ELEVATION OF THIS BENCH MARK IS DERIVED FROM
 JV2150'FIRST-ORDER LEVELING IN MAY 1935 BY ONE OF OUR FIELD PARTIES.
 JV2150
 JV2150                          STATION RECOVERY (2002)
 JV2150
 JV2150'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV2150'MARK IS 70 FEET +/- EAST OF POLE 54+40 ON THE SOUTH SIDE OF THE
 JV2150'RAILROAD TRACKS AND 400 FEET +/- WEST OF I-270 BRIDGE EMBUCKMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1428 ***********************************************************************
 JV1428  DESIGNATION -  1530 WSSC
 JV1428  PID         -  JV1428
 JV1428  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1428  COUNTRY     -  US
 JV1428  USGS QUAD   -  BELTSVILLE (2016)
 JV1428
 JV1428                         *CURRENT SURVEY CONTROL
 JV1428  ______________________________________________________________________
 JV1428* NAD 83(1986) POSITION- 39 00 11.     (N) 076 58 20.     (W)   SCALED
 JV1428* NAVD 88 ORTHO HEIGHT -    52.842 (meters)      173.37  (feet) ADJUSTED
 JV1428  ______________________________________________________________________
 JV1428  GEOID HEIGHT    -        -32.052 (meters)                     GEOID18
 JV1428  DYNAMIC HEIGHT  -         52.814 (meters)      173.27  (feet) COMP
 JV1428  MODELED GRAVITY -    980,100.5   (mgal)                       NAVD 88
 JV1428
 JV1428  VERT ORDER      -  SECOND    CLASS 0
 JV1428
 JV1428.The horizontal coordinates were scaled from a map and have
 JV1428.an estimated accuracy of +/- 6 seconds.
 JV1428
 JV1428.The orthometric height was determined by differential leveling and
 JV1428.adjusted by the NATIONAL GEODETIC SURVEY
 JV1428.in June 1991.
 JV1428
 JV1428.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1428.GEOID18 height accuracy estimate available here.
 JV1428
 JV1428.Click photographs - Photos may exist for this station.
 JV1428
 JV1428.The dynamic height is computed by dividing the NAVD 88
 JV1428.geopotential number by the normal gravity value computed on the
 JV1428.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1428.degrees latitude (g = 980.6199 gals.).
 JV1428
 JV1428.The modeled gravity was interpolated from observed gravity values.
 JV1428
 JV1428;                    North         East    Units  Estimated Accuracy
 JV1428;SPC MD       -   148,350.      402,410.      MT  (+/- 180 meters Scaled)
 JV1428
 JV1428_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ292189(NAD 83)
 JV1428
 JV1428                          SUPERSEDED SURVEY CONTROL
 JV1428
 JV1428  NGVD 29 (11/26/84)   53.069  (m)          174.11   (f) ADJUSTED    2 0
 JV1428
 JV1428.Superseded values are not recommended for survey control.
 JV1428
 JV1428.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1428.See file dsdata.pdf to determine how the superseded data were derived.
 JV1428
 JV1428_MARKER: Z = SEE DESCRIPTION
 JV1428_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1428_STAMPING: WSSC 1530
 JV1428_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1428
 JV1428  HISTORY     - Date     Condition        Report By
 JV1428  HISTORY     - UNK      MONUMENTED       WSSC
 JV1428  HISTORY     - 1951     GOOD             CGS
 JV1428  HISTORY     - 1952     GOOD             CGS
 JV1428
 JV1428                          STATION DESCRIPTION
 JV1428
 JV1428'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1428'AT ADELPHI.
 JV1428'AT ADELPHI, PRINCE GEORGES COUNTY, IN THE SOUTHWEST ANGLE OF
 JV1428'RIGGS AND METZROTT ROADS, 5.5 FEET WEST OF THE WEST EDGE OF THE
 JV1428'WEST CONCRETE SHOULDER OF RIGGS ROAD, 1.9 FEET FROM THE
 JV1428'NORTHEAST CORNER OF A STONE CORNER POST, 8.0 FEET FROM A
 JV1428'12-INCH CEDAR TREE, 5.7 FEET FROM A 6-INCH CEDAR TREE, AND ABOUT
 JV1428'6 INCHES BELOW THE SURFACE OF THE GROUND.  A WASHINGTON SUBURBAN
 JV1428'SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED WSSC 1530 AND
 JV1428'SET IN THE TOP OF AN IRON PIPE.
 JV1428
 JV1428                          STATION RECOVERY (1952)
 JV1428
 JV1428'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 JV1428'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1429 ***********************************************************************
 JV1429  DESIGNATION -  1531 WSSC
 JV1429  PID         -  JV1429
 JV1429  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1429  COUNTRY     -  US
 JV1429  USGS QUAD   -  BELTSVILLE (2016)
 JV1429
 JV1429                         *CURRENT SURVEY CONTROL
 JV1429  ______________________________________________________________________
 JV1429* NAD 83(1986) POSITION- 39 00 16.     (N) 076 58 15.     (W)   SCALED
 JV1429* NAVD 88 ORTHO HEIGHT -    51.01  (+/-2cm)      167.4   (feet) VERTCON3
 JV1429  ______________________________________________________________________
 JV1429  GEOID HEIGHT    -        -32.054 (meters)                     GEOID18
 JV1429  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1429
 JV1429.The horizontal coordinates were scaled from a map and have
 JV1429.an estimated accuracy of +/- 6 seconds.
 JV1429
 JV1429.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1429.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1429
 JV1429.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1429.GEOID18 height accuracy estimate available here.
 JV1429
 JV1429.The vertical order pertains to the NGVD 29 superseded value.
 JV1429
 JV1429.Click photographs - Photos may exist for this station.
 JV1429
 JV1429;                    North         East    Units  Estimated Accuracy
 JV1429;SPC MD       -   148,500.      402,530.      MT  (+/- 180 meters Scaled)
 JV1429
 JV1429_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ293191(NAD 83)
 JV1429
 JV1429                          SUPERSEDED SURVEY CONTROL
 JV1429
 JV1429  NGVD 29 (11/26/84)   51.233  (m)          168.09   (f) ADJUSTED    2 0
 JV1429
 JV1429.Superseded values are not recommended for survey control.
 JV1429
 JV1429.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1429.See file dsdata.pdf to determine how the superseded data were derived.
 JV1429
 JV1429_MARKER: Z = SEE DESCRIPTION
 JV1429_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1429_STAMPING: WSSC 1531
 JV1429_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1429
 JV1429  HISTORY     - Date     Condition        Report By
 JV1429  HISTORY     - UNK      MONUMENTED       WSSC
 JV1429  HISTORY     - 1939     GOOD             WSSC
 JV1429  HISTORY     - 1952     MARK NOT FOUND   CGS
 JV1429
 JV1429                          STATION DESCRIPTION
 JV1429
 JV1429'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1429'0.2 MI N FROM ADELPHI.
 JV1429'ON RIGGS ROAD, 0.1 MILE NORTH OF THE INTERSECTION OF METZROTT
 JV1429'ROAD, AT THE SOUTHEAST CORNER OF THE JUNCTION OF PISGAH CHURCH
 JV1429'ROAD, 49.8 FEET EAST ACROSS RIGGS ROAD FROM A POWER POLE, AND
 JV1429'58.7 FEET NORTH OF A TELEPHONE POLE.
 JV1429
 JV1429                          STATION RECOVERY (1952)
 JV1429
 JV1429'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 JV1429'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0655 ***********************************************************************
 JV0655  DESIGNATION -  156
 JV0655  PID         -  JV0655
 JV0655  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0655  COUNTRY     -  US
 JV0655  USGS QUAD   -  LAUREL (2016)
 JV0655
 JV0655                         *CURRENT SURVEY CONTROL
 JV0655  ______________________________________________________________________
 JV0655* NAD 83(1986) POSITION- 39 06 14.28   (N) 076 50 37.62   (W)   HD_HELD1
 JV0655* NAVD 88 ORTHO HEIGHT -    47.127 (meters)      154.62  (feet) ADJUSTED
 JV0655  ______________________________________________________________________
 JV0655  GEOID HEIGHT    -        -32.261 (meters)                     GEOID18
 JV0655  DYNAMIC HEIGHT  -         47.102 (meters)      154.53  (feet) COMP
 JV0655  MODELED GRAVITY -    980,098.3   (mgal)                       NAVD 88
 JV0655
 JV0655  VERT ORDER      -  FIRST     CLASS II
 JV0655
 JV0655.The horizontal coordinates were determined by differentially corrected
 JV0655.hand held GPS observations or other comparable positioning techniques
 JV0655.and have an estimated accuracy of +/- 3 meters.
 JV0655
 JV0655.The orthometric height was determined by differential leveling and
 JV0655.adjusted by the NATIONAL GEODETIC SURVEY
 JV0655.in June 1991.
 JV0655
 JV0655.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0655.GEOID18 height accuracy estimate available here.
 JV0655
 JV0655.Click photographs - Photos may exist for this station.
 JV0655
 JV0655.The dynamic height is computed by dividing the NAVD 88
 JV0655.geopotential number by the normal gravity value computed on the
 JV0655.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0655.degrees latitude (g = 980.6199 gals.).
 JV0655
 JV0655.The modeled gravity was interpolated from observed gravity values.
 JV0655
 JV0655;                    North         East    Units  Estimated Accuracy
 JV0655;SPC MD       -   159,559.3     413,512.1     MT  (+/- 3 meters HH1 GPS) 
 JV0655
 JV0655_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4057129932(NAD 83)
 JV0655
 JV0655                          SUPERSEDED SURVEY CONTROL
 JV0655
 JV0655  NGVD 29 (11/26/84)   47.346  (m)          155.33   (f) ADJUSTED    1 2
 JV0655
 JV0655.Superseded values are not recommended for survey control.
 JV0655
 JV0655.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0655.See file dsdata.pdf to determine how the superseded data were derived.
 JV0655
 JV0655_MARKER: DB = BENCH MARK DISK
 JV0655_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0655_SP_SET: BUILDING
 JV0655_STAMPING: 156 ADJ 1903
 JV0655_MARK LOGO: USGS
 JV0655_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0655
 JV0655  HISTORY     - Date     Condition        Report By
 JV0655  HISTORY     - 1904     MONUMENTED       USGS
 JV0655  HISTORY     - 1956     MARK NOT FOUND   DOD
 JV0655  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0655  HISTORY     - 19950709 GOOD             USPSQD
 JV0655  HISTORY     - 20030612 POOR             GEOCAC
 JV0655  HISTORY     - 20081230 POOR             NGS
 JV0655  HISTORY     - 20200801 POOR             PROFLN
 JV0655
 JV0655                          STATION DESCRIPTION
 JV0655
 JV0655'DESCRIBED BY US DEPARTMENT OF DEFENSE 1956
 JV0655'AT LAUREL.
 JV0655'AT LAUREL, PRINCE GEORGES COUNTY, AT THE SOUTHWEST CORNER OF THE
 JV0655'INTERSECTION OF MAIN AND WASHINGTON STREETS, 25 FEET WEST
 JV0655'OF THE CENTER LINE OF WASHINGTON STREET, AT THE NORTHEAST
 JV0655'CORNER OF A BRICK BUILDING, IN THE WALL, AND 18 INCHES ABOVE
 JV0655'THE SIDEWALK.  A UNITED STATES GEOLOGICAL SURVEY STANDARD
 JV0655'DISK, STAMPED 156 ADJ 1903 AND SET VERTICALLY.
 JV0655
 JV0655                          STATION RECOVERY (1971)
 JV0655
 JV0655'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0655'MARK NOT FOUND.
 JV0655
 JV0655                          STATION RECOVERY (1995)
 JV0655
 JV0655'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0655'RECOVERED IN GOOD CONDITION.
 JV0655
 JV0655                          STATION RECOVERY (2003)
 JV0655
 JV0655'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV0655'APPROXIMATELY 50 PERCENT OF THE DISK IS BROKEN OFF AND MISSING.
 JV0655
 JV0655                          STATION RECOVERY (2008)
 JV0655
 JV0655'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV0655'MARK IS BROKEN IN HALF AS NOTED IN 2003 RECOVERY.  REMAINDER APPEARS
 JV0655'STABLE
 JV0655
 JV0655                          STATION RECOVERY (2020)
 JV0655
 JV0655'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV0655'RECOVERED DAMAGED AS REPORTED BUT USABLE.  THE DIAGONAL UPPER LEFT
 JV0655'HALF OF THE DISK IS MISSING FROM ABOUT 210 DEGREES OR 7 O'CLOCK AROUND
 JV0655'TO ABOUT 30 DEGREES OR 2 O'CLOCK.  THE MIDDLE LINE IS VISIBLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2155 ***********************************************************************
 JV2155  DESIGNATION -  156 A BORR
 JV2155  PID         -  JV2155
 JV2155  STATE/COUNTY-  MD/FREDERICK
 JV2155  COUNTRY     -  US
 JV2155  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2155
 JV2155                         *CURRENT SURVEY CONTROL
 JV2155  ______________________________________________________________________
 JV2155* NAD 83(1986) POSITION- 39 19 52.     (N) 077 26 58.     (W)   SCALED
 JV2155* NAVD 88 ORTHO HEIGHT -    85.809 (meters)      281.52  (feet) ADJUSTED
 JV2155  ______________________________________________________________________
 JV2155  GEOID HEIGHT    -        -32.634 (meters)                     GEOID18
 JV2155  DYNAMIC HEIGHT  -         85.763 (meters)      281.37  (feet) COMP
 JV2155  MODELED GRAVITY -    980,084.9   (mgal)                       NAVD 88
 JV2155
 JV2155  VERT ORDER      -  FIRST     CLASS II
 JV2155
 JV2155.The horizontal coordinates were scaled from a map and have
 JV2155.an estimated accuracy of +/- 6 seconds.
 JV2155
 JV2155.The orthometric height was determined by differential leveling and
 JV2155.adjusted by the NATIONAL GEODETIC SURVEY
 JV2155.in June 1991.
 JV2155
 JV2155.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2155.GEOID18 height accuracy estimate available here.
 JV2155
 JV2155.Click photographs - Photos may exist for this station.
 JV2155
 JV2155.The dynamic height is computed by dividing the NAVD 88
 JV2155.geopotential number by the normal gravity value computed on the
 JV2155.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2155.degrees latitude (g = 980.6199 gals.).
 JV2155
 JV2155.The modeled gravity was interpolated from observed gravity values.
 JV2155
 JV2155;                    North         East    Units  Estimated Accuracy
 JV2155;SPC MD       -   184,860.      361,250.      MT  (+/- 180 meters Scaled)
 JV2155
 JV2155_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ888563(NAD 83)
 JV2155
 JV2155                          SUPERSEDED SURVEY CONTROL
 JV2155
 JV2155  NGVD 29 (11/26/84)   86.031  (m)          282.25   (f) ADJUSTED    1 2
 JV2155
 JV2155.Superseded values are not recommended for survey control.
 JV2155
 JV2155.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2155.See file dsdata.pdf to determine how the superseded data were derived.
 JV2155
 JV2155_MARKER: B = BOLT
 JV2155_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2155_SP_SET: CULVERT
 JV2155_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2155_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2155+SATELLITE: SATELLITE OBSERVATIONS - June 20, 2010
 JV2155
 JV2155  HISTORY     - Date     Condition        Report By
 JV2155  HISTORY     - 1903     MONUMENTED       BORR
 JV2155  HISTORY     - 1941     GOOD             CGS
 JV2155  HISTORY     - 1970     GOOD             MDDT
 JV2155  HISTORY     - 20100620 GOOD             GEOCAC
 JV2155
 JV2155                          STATION DESCRIPTION
 JV2155
 JV2155'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2155'4.3 MI SW FROM FREDERICK JUNCTION.
 JV2155'ABOUT 4.3 MILES SOUTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2155'FROM THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, AT
 JV2155'BUCKEYSTOWN, 54.4 FEET NORTHWEST OF THE FIFTEENTH POLE SOUTHWEST
 JV2155'OF MILEPOST 62, ABOUT 138 FEET SOUTH OF A ROAD CROSSING, 19.2
 JV2155'FEET SOUTHEAST OF THE SOUTHWEST CORNER OF A HOUSE, AT A STONE
 JV2155'CULVERT, IN THE TOP OF THE NORTH COPING, 1.2 FEET EAST OF THE
 JV2155'WEST END, 11 FEET WEST OF THE WEST RAIL OF THE WEST-BOUND TRACK,
 JV2155'AND ABOUT 3 FEET LOWER THAN THE TOP OF THE RAIL.  A COPPER BOLT.
 JV2155
 JV2155                          STATION RECOVERY (1970)
 JV2155
 JV2155'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1970
 JV2155'RECOVERED IN GOOD CONDITION.
 JV2155
 JV2155                          STATION RECOVERY (2010)
 JV2155
 JV2155'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2155'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1345 ***********************************************************************
 HV1345  DESIGNATION -  1562 WSSC
 HV1345  PID         -  HV1345
 HV1345  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1345  COUNTRY     -  US
 HV1345  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1345
 HV1345                         *CURRENT SURVEY CONTROL
 HV1345  ______________________________________________________________________
 HV1345* NAD 83(1986) POSITION- 38 55 57.     (N) 076 56 10.     (W)   SCALED
 HV1345* NAVD 88 ORTHO HEIGHT -     7.64  (+/-2cm)       25.1   (feet) VERTCON3
 HV1345  ______________________________________________________________________
 HV1345  GEOID HEIGHT    -        -32.206 (meters)                     GEOID18
 HV1345  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1345
 HV1345.The horizontal coordinates were scaled from a map and have
 HV1345.an estimated accuracy of +/- 6 seconds.
 HV1345
 HV1345.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1345.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1345
 HV1345.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1345.GEOID18 height accuracy estimate available here.
 HV1345
 HV1345.The vertical order pertains to the NGVD 29 superseded value.
 HV1345
 HV1345.Click photographs - Photos may exist for this station.
 HV1345
 HV1345;                    North         East    Units  Estimated Accuracy
 HV1345;SPC MD       -   140,520.      405,540.      MT  (+/- 180 meters Scaled)
 HV1345
 HV1345_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ321110(NAD 83)
 HV1345
 HV1345                          SUPERSEDED SURVEY CONTROL
 HV1345
 HV1345  NGVD 29 (11/26/84)    7.868  (m)           25.81   (f) ADJUSTED    2 0
 HV1345
 HV1345.Superseded values are not recommended for survey control.
 HV1345
 HV1345.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1345.See file dsdata.pdf to determine how the superseded data were derived.
 HV1345
 HV1345_MARKER: DD = SURVEY DISK
 HV1345_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1345_STAMPING: 1562
 HV1345_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1345
 HV1345  HISTORY     - Date     Condition        Report By
 HV1345  HISTORY     - UNK      MONUMENTED       WSSC
 HV1345  HISTORY     - 1944     GOOD             WSSC
 HV1345
 HV1345                          STATION DESCRIPTION
 HV1345
 HV1345'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1345'0.8 MI S FROM BLADENSBURG.
 HV1345'ON THE BALTIMORE AND OHIO RAILROAD, ABOUT 1/2 MILE SOUTH OF
 HV1345'DEFENSE HIGHWAY, 0.4 MILE NORTHWEST OF THE KENILWORTH ROAD
 HV1345'CROSSING, AT THE PARKERS LANE CROSSING, ON THE WEST SIDE OF THE
 HV1345'TRACK, AND NORTH OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1180 ***********************************************************************
 HV1180  DESIGNATION -  1575 WSSC
 HV1180  PID         -  HV1180
 HV1180  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1180  COUNTRY     -  US
 HV1180  USGS QUAD   -  LANHAM (2016)
 HV1180
 HV1180                         *CURRENT SURVEY CONTROL
 HV1180  ______________________________________________________________________
 HV1180* NAD 83(1986) POSITION- 38 57 49.     (N) 076 51 27.     (W)   SCALED
 HV1180* NAVD 88 ORTHO HEIGHT -    52.75  (+/-2cm)      173.1   (feet) VERTCON3
 HV1180  ______________________________________________________________________
 HV1180  GEOID HEIGHT    -        -32.364 (meters)                     GEOID18
 HV1180  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1180
 HV1180.The horizontal coordinates were scaled from a map and have
 HV1180.an estimated accuracy of +/- 6 seconds.
 HV1180
 HV1180.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1180.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1180
 HV1180.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1180.GEOID18 height accuracy estimate available here.
 HV1180
 HV1180.The vertical order pertains to the NGVD 29 superseded value.
 HV1180
 HV1180.Click photographs - Photos may exist for this station.
 HV1180
 HV1180;                    North         East    Units  Estimated Accuracy
 HV1180;SPC MD       -   143,980.      412,350.      MT  (+/- 180 meters Scaled)
 HV1180
 HV1180_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ390143(NAD 83)
 HV1180
 HV1180                          SUPERSEDED SURVEY CONTROL
 HV1180
 HV1180  NGVD 29 (11/26/84)   52.980  (m)          173.82   (f) ADJUSTED    2 0
 HV1180
 HV1180.Superseded values are not recommended for survey control.
 HV1180
 HV1180.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1180.See file dsdata.pdf to determine how the superseded data were derived.
 HV1180
 HV1180_MARKER: Z = SEE DESCRIPTION
 HV1180_SETTING: 0 = UNSPECIFIED SETTING
 HV1180_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1180
 HV1180  HISTORY     - Date     Condition        Report By
 HV1180  HISTORY     - 1944     MONUMENTED       WSSC
 HV1180  HISTORY     - 1944     GOOD             WSSC
 HV1180
 HV1180                          STATION DESCRIPTION
 HV1180
 HV1180'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1180'AT LANHAM.
 HV1180'NO DESCRIPTION AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7437 ***********************************************************************
 HV7437  DESIGNATION -  15771 WSSC 1970
 HV7437  PID         -  HV7437
 HV7437  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7437  COUNTRY     -  US
 HV7437  USGS QUAD   -  PISCATAWAY (2016)
 HV7437
 HV7437                         *CURRENT SURVEY CONTROL
 HV7437  ______________________________________________________________________
 HV7437* NAD 83(1991) POSITION- 38 40 23.60961(N) 076 52 33.79266(W)   ADJUSTED
 HV7437* NAVD 88 ORTHO HEIGHT -    65.1   (meters)      214.    (feet) VERTCON3
 HV7437  ______________________________________________________________________
 HV7437  GEOID HEIGHT    -        -32.883 (meters)                     GEOID18
 HV7437  LAPLACE CORR    -         -5.72  (seconds)                    DEFLEC18
 HV7437  HORZ ORDER      -  SECOND
 HV7437
 HV7437.The horizontal coordinates were established by classical geodetic methods
 HV7437.and adjusted by the National Geodetic Survey in January 1992.
 HV7437
 HV7437.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7437.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7437
 HV7437.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7437.GEOID18 height accuracy estimate available here.
 HV7437
 HV7437.Click photographs - Photos may exist for this station.
 HV7437
 HV7437.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7437
 HV7437. The following values were computed from the NAD 83(1991) position.
 HV7437
 HV7437;                    North         East     Units Scale Factor Converg.
 HV7437;SPC MD       -   111,739.214   410,785.773   MT  0.99995607   +0 04 40.1
 HV7437;SPC MD       -   366,597.74  1,347,719.66   sFT  0.99995607   +0 04 40.1
 HV7437;UTM  18      - 4,282,184.950   336,798.208   MT  0.99992800   -1 10 21.2
 HV7437
 HV7437!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7437!SPC MD       -   0.99999495  x   0.99995607  =   0.99995102
 HV7437!UTM  18      -   0.99999495  x   0.99992800  =   0.99992295
 HV7437
 HV7437_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3679882184(NAD 83)
 HV7437
 HV7437|---------------------------------------------------------------------|
 HV7437| PID    Reference Object                     Distance      Geod. Az  |
 HV7437|                                                           dddmmss.s |
 HV7437| HV7436 15770 WSSC 1970                     392.651 METERS 00848     |
 HV7437| HV7439 17442 WSSC 1970                     330.089 METERS 18631     |
 HV7437|---------------------------------------------------------------------|
 HV7437
 HV7437                          SUPERSEDED SURVEY CONTROL
 HV7437
 HV7437  NAD 83(1986)-  38 40 23.60859(N)    076 52 33.80766(W) AD(       ) 2
 HV7437  NAD 27      -  38 40 23.19008(N)    076 52 34.91085(W) AD(       ) 2
 HV7437  NGVD 29 (07/19/86)   65.3    (m)          214.     (f) VERT ANG       
 HV7437
 HV7437.Superseded values are not recommended for survey control.
 HV7437
 HV7437.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7437.See file dsdata.pdf to determine how the superseded data were derived.
 HV7437
 HV7437_MARKER: Z = SEE DESCRIPTION
 HV7437_SETTING: 0 = UNSPECIFIED SETTING
 HV7437_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7437
 HV7437  HISTORY     - Date     Condition        Report By
 HV7437  HISTORY     - 1969     MONUMENTED       WSSC
 HV7437
 HV7437                          STATION DESCRIPTION
 HV7437
 HV7437'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7437'THE STATION IS LOCATED ON ROUTE 301, .6 MILES SOUTH OF CEDARVILLE
 HV7437'ROAD.
 HV7437'
 HV7437'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 301 AND
 HV7437'ROUTE 381, GO SOUTH ON ROUTE 301 FOR 2.3 MILES TO CEDARVILLE
 HV7437'ROAD.  CONTINUE SOUTH ON ROUTE 301 FOR .6 MILES TO THE STATION
 HV7437'IN THE CENTERLINE OF A GRASS MEDIAN STRIP.
 HV7437'
 HV7437'THE STATION MARK IS AN IRON PIPE WITH A BRASS SCREW CENTER AND
 HV7437'IS .3 FEET BELOW THE SURFACE.  IT IS 31.65 FEET EAST OF THE EDGE
 HV7437'OF THE SOUTHBOUND LANE OF ROUTE 301, 18.11 FEET WEST OF THE
 HV7437'NORTHBOUND LANE OF ROUTE 301, 79.55 FEET NORTH OF AN X CUT IN
 HV7437'THE NORTHWEST CORNER OF A CONCRETE HEADWALL AND 79.20 FEET NORTH
 HV7437'OF AN X CUT IN THE NORTHEAST CORNER OF A CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2157 ***********************************************************************
 JV2157  DESIGNATION -  158 BORR
 JV2157  PID         -  JV2157
 JV2157  STATE/COUNTY-  MD/FREDERICK
 JV2157  COUNTRY     -  US
 JV2157  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2157
 JV2157                         *CURRENT SURVEY CONTROL
 JV2157  ______________________________________________________________________
 JV2157* NAD 83(1986) POSITION- 39 18 54.     (N) 077 28 16.     (W)   SCALED
 JV2157* NAVD 88 ORTHO HEIGHT -    94.393 (meters)      309.69  (feet) ADJUSTED
 JV2157  ______________________________________________________________________
 JV2157  GEOID HEIGHT    -        -32.651 (meters)                     GEOID18
 JV2157  DYNAMIC HEIGHT  -         94.342 (meters)      309.52  (feet) COMP
 JV2157  MODELED GRAVITY -    980,082.4   (mgal)                       NAVD 88
 JV2157
 JV2157  VERT ORDER      -  FIRST     CLASS II
 JV2157
 JV2157.The horizontal coordinates were scaled from a map and have
 JV2157.an estimated accuracy of +/- 6 seconds.
 JV2157
 JV2157.The orthometric height was determined by differential leveling and
 JV2157.adjusted by the NATIONAL GEODETIC SURVEY
 JV2157.in June 1991.
 JV2157
 JV2157.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2157.GEOID18 height accuracy estimate available here.
 JV2157
 JV2157.Click photographs - Photos may exist for this station.
 JV2157
 JV2157.The dynamic height is computed by dividing the NAVD 88
 JV2157.geopotential number by the normal gravity value computed on the
 JV2157.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2157.degrees latitude (g = 980.6199 gals.).
 JV2157
 JV2157.The modeled gravity was interpolated from observed gravity values.
 JV2157
 JV2157;                    North         East    Units  Estimated Accuracy
 JV2157;SPC MD       -   183,080.      359,370.      MT  (+/- 180 meters Scaled)
 JV2157
 JV2157_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ869546(NAD 83)
 JV2157
 JV2157                          SUPERSEDED SURVEY CONTROL
 JV2157
 JV2157  NGVD 29 (11/26/84)   94.614  (m)          310.41   (f) ADJUSTED    1 2
 JV2157
 JV2157.Superseded values are not recommended for survey control.
 JV2157
 JV2157.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2157.See file dsdata.pdf to determine how the superseded data were derived.
 JV2157
 JV2157_MARKER: Z = SEE DESCRIPTION
 JV2157_SETTING: 0 = UNSPECIFIED SETTING
 JV2157_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2157
 JV2157  HISTORY     - Date     Condition        Report By
 JV2157  HISTORY     - 1903     MONUMENTED       BORR
 JV2157  HISTORY     - 1934     GOOD             CGS
 JV2157
 JV2157                          STATION DESCRIPTION
 JV2157
 JV2157'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JV2157'5.9 MI SW FROM FREDERICK JUNCTION.
 JV2157'ABOUT 5.9 MILES SOUTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2157'FROM FREDERICK JUNCTION, FREDERICK COUNTY, ABOUT 1/4 MILE EAST OF
 JV2157'ADAMSTOWN, 99 FEET SOUTHWEST OF MILEPOST 64, 57.0 FEET WEST OF
 JV2157'THE FIRST POLE SOUTHWEST OF MILEPOST 64, AND ABOUT 0.2 FOOT LOWER
 JV2157'THAN THE TOP OF THE RAIL.  THE TOP OF A VERTICAL SECTION OF RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1413 ***********************************************************************
 JV1413  DESIGNATION -  1582 WSSC
 JV1413  PID         -  JV1413
 JV1413  STATE/COUNTY-  MD/MONTGOMERY
 JV1413  COUNTRY     -  US
 JV1413  USGS QUAD   -  BELTSVILLE (2016)
 JV1413
 JV1413                         *CURRENT SURVEY CONTROL
 JV1413  ______________________________________________________________________
 JV1413* NAD 83(1986) POSITION- 39 01 32.     (N) 076 58 50.     (W)   SCALED
 JV1413* NAVD 88 ORTHO HEIGHT -    98.44  (+/-2cm)      323.0   (feet) VERTCON3
 JV1413  ______________________________________________________________________
 JV1413  GEOID HEIGHT    -        -32.025 (meters)                     GEOID18
 JV1413  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1413
 JV1413.The horizontal coordinates were scaled from a map and have
 JV1413.an estimated accuracy of +/- 6 seconds.
 JV1413
 JV1413.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1413.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1413
 JV1413.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1413.GEOID18 height accuracy estimate available here.
 JV1413
 JV1413.The vertical order pertains to the NGVD 29 superseded value.
 JV1413
 JV1413.Click photographs - Photos may exist for this station.
 JV1413
 JV1413;                    North         East    Units  Estimated Accuracy
 JV1413;SPC MD       -   150,840.      401,680.      MT  (+/- 180 meters Scaled)
 JV1413
 JV1413_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ285214(NAD 83)
 JV1413
 JV1413                          SUPERSEDED SURVEY CONTROL
 JV1413
 JV1413  NGVD 29 (11/26/84)   98.654  (m)          323.67   (f) ADJUSTED    2 0
 JV1413
 JV1413.Superseded values are not recommended for survey control.
 JV1413
 JV1413.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1413.See file dsdata.pdf to determine how the superseded data were derived.
 JV1413
 JV1413_MARKER: DD = SURVEY DISK
 JV1413_SETTING: 0 = UNSPECIFIED SETTING
 JV1413_STAMPING: 1582
 JV1413_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1413
 JV1413  HISTORY     - Date     Condition        Report By
 JV1413  HISTORY     - UNK      MONUMENTED       WSSC
 JV1413  HISTORY     - 1939     GOOD             WSSC
 JV1413  HISTORY     - 1952     MARK NOT FOUND   CGS
 JV1413
 JV1413                          STATION DESCRIPTION
 JV1413
 JV1413'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1413'AT HILLANDALE.
 JV1413'ON THE HILLANDALE-AVENEL ROAD (STATE HIGHWAY 320), AT THE
 JV1413'SOUTHEAST CORNER OF THE INTERSECTION OF OAKLAWN DRIVE, ON THE
 JV1413'EAST PROPERTY LINE, 79 FEET SOUTH OF PEP CO. POLE 720095, AND
 JV1413'10.1 FEET SOUTH OF A PROPERTY STONE.
 JV1413
 JV1413                          STATION RECOVERY (1952)
 JV1413
 JV1413'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 JV1413'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1412 ***********************************************************************
 JV1412  DESIGNATION -  1584 WSSC
 JV1412  PID         -  JV1412
 JV1412  STATE/COUNTY-  MD/MONTGOMERY
 JV1412  COUNTRY     -  US
 JV1412  USGS QUAD   -  BELTSVILLE (2016)
 JV1412
 JV1412                         *CURRENT SURVEY CONTROL
 JV1412  ______________________________________________________________________
 JV1412* NAD 83(1986) POSITION- 39 01 43.     (N) 076 59 01.     (W)   SCALED
 JV1412* NAVD 88 ORTHO HEIGHT -   111.72  (+/-2cm)      366.5   (feet) VERTCON3
 JV1412  ______________________________________________________________________
 JV1412  GEOID HEIGHT    -        -32.018 (meters)                     GEOID18
 JV1412  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1412
 JV1412.The horizontal coordinates were scaled from a map and have
 JV1412.an estimated accuracy of +/- 6 seconds.
 JV1412
 JV1412.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1412.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1412
 JV1412.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1412.GEOID18 height accuracy estimate available here.
 JV1412
 JV1412.The vertical order pertains to the NGVD 29 superseded value.
 JV1412
 JV1412.Click photographs - Photos may exist for this station.
 JV1412
 JV1412;                    North         East    Units  Estimated Accuracy
 JV1412;SPC MD       -   151,180.      401,420.      MT  (+/- 180 meters Scaled)
 JV1412
 JV1412_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ282218(NAD 83)
 JV1412
 JV1412                          SUPERSEDED SURVEY CONTROL
 JV1412
 JV1412  NGVD 29 (11/26/84)  111.931  (m)          367.23   (f) ADJUSTED    2 0
 JV1412
 JV1412.Superseded values are not recommended for survey control.
 JV1412
 JV1412.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1412.See file dsdata.pdf to determine how the superseded data were derived.
 JV1412
 JV1412_MARKER: DD = SURVEY DISK
 JV1412_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1412_STAMPING: 1584
 JV1412_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1412
 JV1412  HISTORY     - Date     Condition        Report By
 JV1412  HISTORY     - UNK      MONUMENTED       WSSC
 JV1412  HISTORY     - 1952     GOOD             CGS
 JV1412
 JV1412                          STATION DESCRIPTION
 JV1412
 JV1412'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV1412'AT HILLANDALE.
 JV1412'AT HILLANDALE, MONTGOMERY COUNTY, AT THE NORTHERN LIMITS, ON
 JV1412'THE SOUTHWEST SIDE OF NEW HAMPSHIRE AVENUE (STATE HIGHWAY 320),
 JV1412'7.0 FEET SOUTHEAST OF A FENCE CORNER, 38.1 FEET NORTH OF A 12-INCH
 JV1412'PINE TREE, 35.3 FEET NORTHEAST OF A STONE IN A FENCE LINE, AND
 JV1412'16.2 FEET SOUTHEAST OF A PIPE.  A WASHINGTON SUBURBAN SANITARY
 JV1412'DISTRICT BRONZE DISK, STAMPED 1584, AND FASTENED ON THE TOP OF
 JV1412'AN IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1414 ***********************************************************************
 JV1414  DESIGNATION -  1585 WSSC
 JV1414  PID         -  JV1414
 JV1414  STATE/COUNTY-  MD/MONTGOMERY
 JV1414  COUNTRY     -  US
 JV1414  USGS QUAD   -  BELTSVILLE (2016)
 JV1414
 JV1414                         *CURRENT SURVEY CONTROL
 JV1414  ______________________________________________________________________
 JV1414* NAD 83(1986) POSITION- 39 01 20.     (N) 076 58 39.     (W)   SCALED
 JV1414* NAVD 88 ORTHO HEIGHT -    93.610 (meters)      307.12  (feet) ADJUSTED
 JV1414  ______________________________________________________________________
 JV1414  GEOID HEIGHT    -        -32.032 (meters)                     GEOID18
 JV1414  DYNAMIC HEIGHT  -         93.560 (meters)      306.95  (feet) COMP
 JV1414  MODELED GRAVITY -    980,095.8   (mgal)                       NAVD 88
 JV1414
 JV1414  VERT ORDER      -  SECOND    CLASS 0
 JV1414
 JV1414.The horizontal coordinates were scaled from a map and have
 JV1414.an estimated accuracy of +/- 6 seconds.
 JV1414
 JV1414.The orthometric height was determined by differential leveling and
 JV1414.adjusted by the NATIONAL GEODETIC SURVEY
 JV1414.in June 1991.
 JV1414
 JV1414.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1414.GEOID18 height accuracy estimate available here.
 JV1414
 JV1414.Click photographs - Photos may exist for this station.
 JV1414
 JV1414.The dynamic height is computed by dividing the NAVD 88
 JV1414.geopotential number by the normal gravity value computed on the
 JV1414.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1414.degrees latitude (g = 980.6199 gals.).
 JV1414
 JV1414.The modeled gravity was interpolated from observed gravity values.
 JV1414
 JV1414;                    North         East    Units  Estimated Accuracy
 JV1414;SPC MD       -   150,470.      401,950.      MT  (+/- 180 meters Scaled)
 JV1414
 JV1414_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ288211(NAD 83)
 JV1414
 JV1414                          SUPERSEDED SURVEY CONTROL
 JV1414
 JV1414  NGVD 29 (11/26/84)   93.833  (m)          307.85   (f) ADJUSTED    2 0
 JV1414
 JV1414.Superseded values are not recommended for survey control.
 JV1414
 JV1414.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1414.See file dsdata.pdf to determine how the superseded data were derived.
 JV1414
 JV1414_MARKER: DD = SURVEY DISK
 JV1414_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1414_STAMPING: 1585
 JV1414_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1414
 JV1414  HISTORY     - Date     Condition        Report By
 JV1414  HISTORY     - UNK      MONUMENTED       WSSC
 JV1414  HISTORY     - 1951     GOOD             CGS
 JV1414
 JV1414                          STATION DESCRIPTION
 JV1414
 JV1414'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1414'AT HILLANDALE.
 JV1414'AT HILLANDALE, MONTGOMERY COUNTY, AT THE INTERSECTION OF NEW
 JV1414'HAMPSHIRE AVENUE (STATE HIGHWAY 320), POWDER MILL ROAD AND
 JV1414'GREENACRES DRIVE, IN THE NORTH ANGLE, ABOUT 100 FEET NORTH OF THE
 JV1414'INTERSECTION, 38.5 FEET FROM THE NEAR CORNER OF THE NEAR STONE
 JV1414'GATEPOST, AND 19.0 FEET FROM P.E.P. CO. POLE 720087.  A WASHINGTON
 JV1414'SUBURBAN SANITARY DISTRICT BRONZE DISK, STAMPED 1585, AND
 JV1414'FASTENED TO THE TOP OF AN IRON POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1424 ***********************************************************************
 JV1424  DESIGNATION -  1586 WSSC
 JV1424  PID         -  JV1424
 JV1424  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1424  COUNTRY     -  US
 JV1424  USGS QUAD   -  BELTSVILLE (2016)
 JV1424
 JV1424                         *CURRENT SURVEY CONTROL
 JV1424  ______________________________________________________________________
 JV1424* NAD 83(1986) POSITION- 39 00 15.     (N) 076 58 51.     (W)   SCALED
 JV1424* NAVD 88 ORTHO HEIGHT -    61.509 (meters)      201.80  (feet) ADJUSTED
 JV1424  ______________________________________________________________________
 JV1424  GEOID HEIGHT    -        -32.038 (meters)                     GEOID18
 JV1424  DYNAMIC HEIGHT  -         61.477 (meters)      201.70  (feet) COMP
 JV1424  MODELED GRAVITY -    980,097.7   (mgal)                       NAVD 88
 JV1424
 JV1424  VERT ORDER      -  SECOND    CLASS 0
 JV1424
 JV1424.The horizontal coordinates were scaled from a map and have
 JV1424.an estimated accuracy of +/- 6 seconds.
 JV1424
 JV1424.The orthometric height was determined by differential leveling and
 JV1424.adjusted by the NATIONAL GEODETIC SURVEY
 JV1424.in June 1991.
 JV1424
 JV1424.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1424.GEOID18 height accuracy estimate available here.
 JV1424
 JV1424.Click photographs - Photos may exist for this station.
 JV1424
 JV1424.The dynamic height is computed by dividing the NAVD 88
 JV1424.geopotential number by the normal gravity value computed on the
 JV1424.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1424.degrees latitude (g = 980.6199 gals.).
 JV1424
 JV1424.The modeled gravity was interpolated from observed gravity values.
 JV1424
 JV1424;                    North         East    Units  Estimated Accuracy
 JV1424;SPC MD       -   148,470.      401,660.      MT  (+/- 180 meters Scaled)
 JV1424
 JV1424_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ284191(NAD 83)
 JV1424
 JV1424                          SUPERSEDED SURVEY CONTROL
 JV1424
 JV1424  NGVD 29 (11/26/84)   61.731  (m)          202.53   (f) ADJUSTED    2 0
 JV1424
 JV1424.Superseded values are not recommended for survey control.
 JV1424
 JV1424.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1424.See file dsdata.pdf to determine how the superseded data were derived.
 JV1424
 JV1424_MARKER: DD = SURVEY DISK
 JV1424_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1424_STAMPING: 1586
 JV1424_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1424
 JV1424  HISTORY     - Date     Condition        Report By
 JV1424  HISTORY     - UNK      MONUMENTED       WSSC
 JV1424  HISTORY     - 1951     GOOD             CGS
 JV1424
 JV1424                          STATION DESCRIPTION
 JV1424
 JV1424'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1424'AT NORTHWEST PARK.
 JV1424'AT NORTHWEST PARK, PRINCE GEORGES COUNTY, SOUTH OF METZROTT
 JV1424'ROAD, EAST OF PRIVATE ROAD HEADING TO HOLY TRINITY MISSIONARY
 JV1424'CENCALE, 57.0 FEET FROM THE CENTER OF A 10-INCH (1951) APPLE
 JV1424'TREE, 37.8 FEET FROM THE CENTER OF A 20-INCH (1951) OAK TREE,
 JV1424'AND 35.4 FEET FROM THE CENTER OF A 4-INCH (1951) CEDAR TREE.
 JV1424'A WASHINGTON SUBURBAN SANITARY DISTRICT BRONZE DISK, STAMPED
 JV1424'1586 AND SET IN THE TOP OF A 2-INCH IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2159 ***********************************************************************
 JV2159  DESIGNATION -  159 BORR
 JV2159  PID         -  JV2159
 JV2159  STATE/COUNTY-  MD/FREDERICK
 JV2159  COUNTRY     -  US
 JV2159  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2159
 JV2159                         *CURRENT SURVEY CONTROL
 JV2159  ______________________________________________________________________
 JV2159* NAD 83(1986) POSITION- 39 18 16.     (N) 077 29 06.     (W)   SCALED
 JV2159* NAVD 88 ORTHO HEIGHT -    86.838 (meters)      284.90  (feet) ADJUSTED
 JV2159  ______________________________________________________________________
 JV2159  GEOID HEIGHT    -        -32.662 (meters)                     GEOID18
 JV2159  DYNAMIC HEIGHT  -         86.791 (meters)      284.75  (feet) COMP
 JV2159  MODELED GRAVITY -    980,081.6   (mgal)                       NAVD 88
 JV2159
 JV2159  VERT ORDER      -  FIRST     CLASS II
 JV2159
 JV2159.The horizontal coordinates were scaled from a map and have
 JV2159.an estimated accuracy of +/- 6 seconds.
 JV2159
 JV2159.The orthometric height was determined by differential leveling and
 JV2159.adjusted by the NATIONAL GEODETIC SURVEY
 JV2159.in June 1991.
 JV2159
 JV2159.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2159.GEOID18 height accuracy estimate available here.
 JV2159
 JV2159.Click photographs - Photos may exist for this station.
 JV2159
 JV2159.The dynamic height is computed by dividing the NAVD 88
 JV2159.geopotential number by the normal gravity value computed on the
 JV2159.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2159.degrees latitude (g = 980.6199 gals.).
 JV2159
 JV2159.The modeled gravity was interpolated from observed gravity values.
 JV2159
 JV2159;                    North         East    Units  Estimated Accuracy
 JV2159;SPC MD       -   181,920.      358,170.      MT  (+/- 180 meters Scaled)
 JV2159
 JV2159_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ857535(NAD 83)
 JV2159
 JV2159                          SUPERSEDED SURVEY CONTROL
 JV2159
 JV2159  NGVD 29 (11/26/84)   87.060  (m)          285.63   (f) ADJUSTED    1 2
 JV2159
 JV2159.Superseded values are not recommended for survey control.
 JV2159
 JV2159.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2159.See file dsdata.pdf to determine how the superseded data were derived.
 JV2159
 JV2159_MARKER: B = BOLT
 JV2159_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2159_SP_SET: BRIDGE
 JV2159_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2159_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2159+SATELLITE: SATELLITE OBSERVATIONS - June 20, 2010
 JV2159
 JV2159  HISTORY     - Date     Condition        Report By
 JV2159  HISTORY     - 1903     MONUMENTED       BORR
 JV2159  HISTORY     - 1941     GOOD             CGS
 JV2159  HISTORY     - 20100620 GOOD             GEOCAC
 JV2159
 JV2159                          STATION DESCRIPTION
 JV2159
 JV2159'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2159'0.1 MI E FROM DOUB.
 JV2159'ABOUT 0.1 MILE EAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2159'THE STATION AT DOUB, FREDERICK COUNTY, ABOUT 318 FEET WEST OF
 JV2159'MILEPOST 65, AT BRIDGE 36 A, IN THE CENTER OF THE TOP OF THE
 JV2159'NORTH COPING, 7.8 FEET NORTH OF THE NORTH RAIL OF THE EAST-BOUND
 JV2159'TRACK, AND ABOUT 1.5 FEET LOWER THAN THE TRACK.  A COPPER BOLT.
 JV2159
 JV2159                          STATION RECOVERY (2010)
 JV2159
 JV2159'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2159'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7411 ***********************************************************************
 HV7411  DESIGNATION -  15922 WSSC 1970
 HV7411  PID         -  HV7411
 HV7411  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7411  COUNTRY     -  US
 HV7411  USGS QUAD   -  BRANDYWINE (2016)
 HV7411
 HV7411                         *CURRENT SURVEY CONTROL
 HV7411  ______________________________________________________________________
 HV7411* NAD 83(1991) POSITION- 38 44 03.44911(N) 076 49 27.54153(W)   ADJUSTED
 HV7411* NAVD 88 ORTHO HEIGHT -    71.2   (meters)      234.    (feet) VERTCON3
 HV7411  ______________________________________________________________________
 HV7411  GEOID HEIGHT    -        -32.873 (meters)                     GEOID18
 HV7411  LAPLACE CORR    -         -6.04  (seconds)                    DEFLEC18
 HV7411  HORZ ORDER      -  SECOND
 HV7411
 HV7411.The horizontal coordinates were established by classical geodetic methods
 HV7411.and adjusted by the National Geodetic Survey in January 1992.
 HV7411
 HV7411.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7411.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7411
 HV7411.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7411.GEOID18 height accuracy estimate available here.
 HV7411
 HV7411.Click photographs - Photos may exist for this station.
 HV7411
 HV7411.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7411
 HV7411. The following values were computed from the NAD 83(1991) position.
 HV7411
 HV7411;                    North         East     Units Scale Factor Converg.
 HV7411;SPC MD       -   118,525.266   415,274.805   MT  0.99995288   +0 06 37.0
 HV7411;SPC MD       -   388,861.64  1,362,447.42   sFT  0.99995288   +0 06 37.0
 HV7411;UTM  18      - 4,288,871.126   341,434.182   MT  0.99990962   -1 08 30.2
 HV7411
 HV7411!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7411!SPC MD       -   0.99999399  x   0.99995288  =   0.99994687
 HV7411!UTM  18      -   0.99999399  x   0.99990962  =   0.99990361
 HV7411
 HV7411_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4143488871(NAD 83)
 HV7411
 HV7411                          SUPERSEDED SURVEY CONTROL
 HV7411
 HV7411  NAD 83(1986)-  38 44 03.44670(N)    076 49 27.55610(W) AD(       ) 2
 HV7411  NAD 27      -  38 44 03.03223(N)    076 49 28.66343(W) AD(       ) 2
 HV7411  NGVD 29 (07/19/86)   71.4    (m)          234.     (f) VERT ANG       
 HV7411
 HV7411.Superseded values are not recommended for survey control.
 HV7411
 HV7411.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7411.See file dsdata.pdf to determine how the superseded data were derived.
 HV7411
 HV7411_MARKER: Z = SEE DESCRIPTION
 HV7411_SETTING: 0 = UNSPECIFIED SETTING
 HV7411_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7411
 HV7411  HISTORY     - Date     Condition        Report By
 HV7411  HISTORY     - 1969     MONUMENTED       WSSC
 HV7411
 HV7411                          STATION DESCRIPTION
 HV7411
 HV7411'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7411'THE STATION IS LOCATED ON THE EAST SIDE OF ROUTE 301 AT THE
 HV7411'INTERSECTION OF SURRATTS ROAD.
 HV7411'
 HV7411'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 301 AND
 HV7411'SURRATTS ROAD, TURN RIGHT ON GRAVEL ROAD OPPOSITE SURRATTS
 HV7411'ROAD.  GO EAST ON GRAVEL ROAD TO PENN. R.R. TRACKS.  CROSS
 HV7411'R.R. TRACKS FOR 50 FEET TO STATION IN CENTERLINE OF GRAVEL AT
 HV7411'PRIVATE CEMETERY.
 HV7411'
 HV7411'THE STATION MARK IS AN IRON PIPE WITH A BRASS SCREW CENTER AND
 HV7411'IS .5 FEET BELOW THE SURFACE.  IT IS 49.24 FEET SOUTHEAST OF
 HV7411'THE SOUTHEAST CORNER OF AN OLD R.R. STATION, 63.31 FEET SOUTHWEST
 HV7411'OF A 20-INCH MAPLE, 27.67 FEET WEST OF A 28-INCH OAK AND 48.50
 HV7411'FEET NORTHWEST OF A 30-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2681 ***********************************************************************
 JV2681  DESIGNATION -  1593 WSSC
 JV2681  PID         -  JV2681
 JV2681  STATE/COUNTY-  MD/MONTGOMERY
 JV2681  COUNTRY     -  US
 JV2681  USGS QUAD   -  KENSINGTON (2016)
 JV2681
 JV2681                         *CURRENT SURVEY CONTROL
 JV2681  ______________________________________________________________________
 JV2681* NAD 83(1986) POSITION- 39 03 58.     (N) 077 01 37.     (W)   SCALED
 JV2681* NAVD 88 ORTHO HEIGHT -    88.075 (meters)      288.96  (feet) ADJUSTED
 JV2681  ______________________________________________________________________
 JV2681  GEOID HEIGHT    -        -31.932 (meters)                     GEOID18
 JV2681  DYNAMIC HEIGHT  -         88.027 (meters)      288.80  (feet) COMP
 JV2681  MODELED GRAVITY -    980,083.3   (mgal)                       NAVD 88
 JV2681
 JV2681  VERT ORDER      -  SECOND    CLASS 0
 JV2681
 JV2681.The horizontal coordinates were scaled from a map and have
 JV2681.an estimated accuracy of +/- 6 seconds.
 JV2681
 JV2681.The orthometric height was determined by differential leveling and
 JV2681.adjusted by the NATIONAL GEODETIC SURVEY
 JV2681.in June 1991.
 JV2681
 JV2681.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2681.GEOID18 height accuracy estimate available here.
 JV2681
 JV2681.Click photographs - Photos may exist for this station.
 JV2681
 JV2681.The dynamic height is computed by dividing the NAVD 88
 JV2681.geopotential number by the normal gravity value computed on the
 JV2681.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2681.degrees latitude (g = 980.6199 gals.).
 JV2681
 JV2681.The modeled gravity was interpolated from observed gravity values.
 JV2681
 JV2681;                    North         East    Units  Estimated Accuracy
 JV2681;SPC MD       -   155,350.      397,670.      MT  (+/- 180 meters Scaled)
 JV2681
 JV2681_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ246260(NAD 83)
 JV2681
 JV2681                          SUPERSEDED SURVEY CONTROL
 JV2681
 JV2681  NGVD 29 (11/26/84)   88.288  (m)          289.66   (f) ADJUSTED    2 0
 JV2681
 JV2681.Superseded values are not recommended for survey control.
 JV2681
 JV2681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2681.See file dsdata.pdf to determine how the superseded data were derived.
 JV2681
 JV2681_MARKER: DD = SURVEY DISK
 JV2681_SETTING: 0 = UNSPECIFIED SETTING
 JV2681_SP_SET: IRON PIPE
 JV2681_STAMPING: 1593
 JV2681_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2681
 JV2681  HISTORY     - Date     Condition        Report By
 JV2681  HISTORY     - UNK      MONUMENTED       WSSC
 JV2681  HISTORY     - 1951     GOOD             CGS
 JV2681  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2681
 JV2681                          STATION DESCRIPTION
 JV2681
 JV2681'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2681'1.4 MI NE FROM GLENMONT.
 JV2681'1.4 MILES NORTHEAST ALONG STATE HIGHWAY 183 FROM THE JUNCTION
 JV2681'WITH STATE HIGHWAY 97 AT GLENMONT, MONTGOMERY COUNTY, 0.1 MILE
 JV2681'NORTHEAST OF THE BRIDGE OVER NORTHWEST BRANCH, 26.6 FEET NORTHWEST
 JV2681'OF THE CENTER LINE OF THE HIGHWAY, 47 FEET SOUTHEAST OF A LARGE
 JV2681'WALNUT TREE, 41.2 FEET SOUTHEAST OF P.E.P. CO. POLE NO. 78833,
 JV2681'23-1/2 FEET FROM C AND P B C POLE NO. 38, IN A GRASSY AREA, AND
 JV2681'ABOUT FLUSH WITH THE GROUND SURFACE.  A WASHINGTON SUBURBAN
 JV2681'SANITARY DISTRICT BRONZE DISK, STAMPED 1593 AND SET IN THE TOP
 JV2681'OF A 2-INCH IRON PIPE.
 JV2681
 JV2681                          STATION RECOVERY (1995)
 JV2681
 JV2681'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2681'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3986 ***********************************************************************
 JV3986  DESIGNATION -  1595 WSSC
 JV3986  PID         -  JV3986
 JV3986  STATE/COUNTY-  MD/MONTGOMERY
 JV3986  COUNTRY     -  US
 JV3986  USGS QUAD   -  BELTSVILLE (2016)
 JV3986
 JV3986                         *CURRENT SURVEY CONTROL
 JV3986  ______________________________________________________________________
 JV3986* NAD 83(1986) POSITION- 39 04 32.     (N) 076 59 52.     (W)   SCALED
 JV3986* NAVD 88 ORTHO HEIGHT -   115.957 (meters)      380.44  (feet) ADJUSTED
 JV3986  ______________________________________________________________________
 JV3986  GEOID HEIGHT    -        -31.974 (meters)                     GEOID18
 JV3986  DYNAMIC HEIGHT  -        115.894 (meters)      380.23  (feet) COMP
 JV3986  MODELED GRAVITY -    980,084.6   (mgal)                       NAVD 88
 JV3986
 JV3986  VERT ORDER      -  SECOND    CLASS 0
 JV3986
 JV3986.The horizontal coordinates were scaled from a map and have
 JV3986.an estimated accuracy of +/- 6 seconds.
 JV3986
 JV3986.The orthometric height was determined by differential leveling and
 JV3986.adjusted by the NATIONAL GEODETIC SURVEY
 JV3986.in June 1991.
 JV3986
 JV3986.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3986.GEOID18 height accuracy estimate available here.
 JV3986
 JV3986.Click photographs - Photos may exist for this station.
 JV3986
 JV3986.The dynamic height is computed by dividing the NAVD 88
 JV3986.geopotential number by the normal gravity value computed on the
 JV3986.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3986.degrees latitude (g = 980.6199 gals.).
 JV3986
 JV3986.The modeled gravity was interpolated from observed gravity values.
 JV3986
 JV3986;                    North         East    Units  Estimated Accuracy
 JV3986;SPC MD       -   156,390.      400,190.      MT  (+/- 180 meters Scaled)
 JV3986
 JV3986_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ271270(NAD 83)
 JV3986
 JV3986                          SUPERSEDED SURVEY CONTROL
 JV3986
 JV3986  NGVD 29 (11/26/84)  116.170  (m)          381.13   (f) ADJUSTED    2 0
 JV3986
 JV3986.Superseded values are not recommended for survey control.
 JV3986
 JV3986.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3986.See file dsdata.pdf to determine how the superseded data were derived.
 JV3986
 JV3986_MARKER: DD = SURVEY DISK
 JV3986_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV3986_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3986
 JV3986  HISTORY     - Date     Condition        Report By
 JV3986  HISTORY     - 1951     MONUMENTED       WSSC
 JV3986
 JV3986                          STATION DESCRIPTION
 JV3986
 JV3986'DESCRIBED BY WASH SUBURB SAN COMM 1951
 JV3986'0.25 MI E FROM COLESVILLE.
 JV3986'0.25 MILE EAST ALONG THE COLESVILLE-FAIRLAND ROAD FROM US HWY 29
 JV3986'AND ST HWY 183 AT COLESVILLE, MONTGOMERY CO., 112 FT W OF A CULVERT
 JV3986', 18 FT N OF THE CENTERLINE OF THE ROAD, 27.4 FT FROM THE EASTERN
 JV3986'ONE OF A ROW OF THREE TREES, 15.4 FT FROM THE WESTERN ONE OF THE
 JV3986'ROW OF THREE TREES, 4.2 FT FROM THE MIDDLE TREE, AND (IN 1951)
 JV3986'ABOUT 4 INCHES BELOW THE SURFACE OF THE GROUND. A WASHINGTON
 JV3986'SUBURBAN SANITARY DISTRICT BRONZE DISK, STAMPED 1595 AND SET IN
 JV3986'THE TOP OF A 2 INCH IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1069 ***********************************************************************
 JV1069  DESIGNATION -  1596 A WSSC
 JV1069  PID         -  JV1069
 JV1069  STATE/COUNTY-  MD/HOWARD
 JV1069  COUNTRY     -  US
 JV1069  USGS QUAD   -  CLARKSVILLE (2016)
 JV1069
 JV1069                         *CURRENT SURVEY CONTROL
 JV1069  ______________________________________________________________________
 JV1069* NAD 83(1986) POSITION- 39 10 04.     (N) 076 58 08.     (W)   SCALED
 JV1069* NAVD 88 ORTHO HEIGHT -   126.90  (+/-2cm)      416.3   (feet) VERTCON3
 JV1069  ______________________________________________________________________
 JV1069  GEOID HEIGHT    -        -31.991 (meters)                     GEOID18
 JV1069  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1069
 JV1069.The horizontal coordinates were scaled from a map and have
 JV1069.an estimated accuracy of +/- 6 seconds.
 JV1069
 JV1069.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1069.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1069
 JV1069.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1069.GEOID18 height accuracy estimate available here.
 JV1069
 JV1069.The vertical order pertains to the NGVD 29 superseded value.
 JV1069
 JV1069.Click photographs - Photos may exist for this station.
 JV1069
 JV1069;                    North         East    Units  Estimated Accuracy
 JV1069;SPC MD       -   166,630.      402,690.      MT  (+/- 180 meters Scaled)
 JV1069
 JV1069_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ299372(NAD 83)
 JV1069
 JV1069                          SUPERSEDED SURVEY CONTROL
 JV1069
 JV1069  NGVD 29 (11/26/84)  127.118  (m)          417.05   (f) ADJUSTED    2 0
 JV1069
 JV1069.Superseded values are not recommended for survey control.
 JV1069
 JV1069.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1069.See file dsdata.pdf to determine how the superseded data were derived.
 JV1069
 JV1069_MARKER: Z = SEE DESCRIPTION
 JV1069_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1069_SP_SET: TREE
 JV1069_STAMPING: WSSC 1596 A
 JV1069_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1069
 JV1069  HISTORY     - Date     Condition        Report By
 JV1069  HISTORY     - UNK      MONUMENTED       WSSC
 JV1069  HISTORY     - 1939     GOOD             WSSC
 JV1069
 JV1069                          STATION DESCRIPTION
 JV1069
 JV1069'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1069'3 MI E FROM ASHTON.
 JV1069'ON THE HIGHLAND ROAD (U.S. HIGHWAY 29), 0.5 MILE NORTH OF
 JV1069'PATUXENT RIVER, ABOUT 300 FEET SOUTH OF THE TOP OF A HILL, ON
 JV1069'THE EAST SIDE OF THE HIGHWAY, AND IN THE NORTHWEST ROOT OF AN
 JV1069'8-INCH PINE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1070 ***********************************************************************
 JV1070  DESIGNATION -  1596 B WSSC
 JV1070  PID         -  JV1070
 JV1070  STATE/COUNTY-  MD/HOWARD
 JV1070  COUNTRY     -  US
 JV1070  USGS QUAD   -  CLARKSVILLE (2016)
 JV1070
 JV1070                         *CURRENT SURVEY CONTROL
 JV1070  ______________________________________________________________________
 JV1070* NAD 83(1986) POSITION- 39 10 29.     (N) 076 57 41.     (W)   SCALED
 JV1070* NAVD 88 ORTHO HEIGHT -   156.75  (+/-2cm)      514.3   (feet) VERTCON3
 JV1070  ______________________________________________________________________
 JV1070  GEOID HEIGHT    -        -32.000 (meters)                     GEOID18
 JV1070  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1070
 JV1070.The horizontal coordinates were scaled from a map and have
 JV1070.an estimated accuracy of +/- 6 seconds.
 JV1070
 JV1070.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1070.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1070
 JV1070.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1070.GEOID18 height accuracy estimate available here.
 JV1070
 JV1070.The vertical order pertains to the NGVD 29 superseded value.
 JV1070
 JV1070.Click photographs - Photos may exist for this station.
 JV1070
 JV1070;                    North         East    Units  Estimated Accuracy
 JV1070;SPC MD       -   167,400.      403,340.      MT  (+/- 180 meters Scaled)
 JV1070
 JV1070_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ305379(NAD 83)
 JV1070
 JV1070                          SUPERSEDED SURVEY CONTROL
 JV1070
 JV1070  NGVD 29 (11/26/84)  156.965  (m)          514.98   (f) ADJUSTED    2 0
 JV1070
 JV1070.Superseded values are not recommended for survey control.
 JV1070
 JV1070.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1070.See file dsdata.pdf to determine how the superseded data were derived.
 JV1070
 JV1070_MARKER: Z = SEE DESCRIPTION
 JV1070_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1070_SP_SET: TREE
 JV1070_STAMPING: WSSC 1596 B
 JV1070_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1070
 JV1070  HISTORY     - Date     Condition        Report By
 JV1070  HISTORY     - UNK      MONUMENTED       WSSC
 JV1070  HISTORY     - 1939     GOOD             WSSC
 JV1070
 JV1070                          STATION DESCRIPTION
 JV1070
 JV1070'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1070'0.3 MI S FROM HIGHLAND.
 JV1070'ON THE ASHTON ROAD (U.S. HIGHWAY 29), ON THE EAST SIDE OF THE
 JV1070'ROAD, AT AN 8-INCH HICKORY TREE AT THE EDGE OF A WOODS, AND IN
 JV1070'THE WEST SIDE OF THE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1068 ***********************************************************************
 JV1068  DESIGNATION -  1596 WSSC
 JV1068  PID         -  JV1068
 JV1068  STATE/COUNTY-  MD/HOWARD
 JV1068  COUNTRY     -  US
 JV1068  USGS QUAD   -  CLARKSVILLE (2016)
 JV1068
 JV1068                         *CURRENT SURVEY CONTROL
 JV1068  ______________________________________________________________________
 JV1068* NAD 83(1986) POSITION- 39 09 45.04   (N) 076 58 25.18   (W)   HD_HELD1
 JV1068* NAVD 88 ORTHO HEIGHT -    91.37  (+/-2cm)      299.8   (feet) VERTCON3
 JV1068  ______________________________________________________________________
 JV1068  GEOID HEIGHT    -        -31.985 (meters)                     GEOID18
 JV1068  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1068
 JV1068.The horizontal coordinates were determined by differentially corrected
 JV1068.hand held GPS observations or other comparable positioning techniques
 JV1068.and have an estimated accuracy of +/- 3 meters.
 JV1068
 JV1068.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1068.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1068
 JV1068.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1068.GEOID18 height accuracy estimate available here.
 JV1068
 JV1068.The vertical order pertains to the NGVD 29 superseded value.
 JV1068
 JV1068.Click photographs - Photos may exist for this station.
 JV1068
 JV1068;                    North         East    Units  Estimated Accuracy
 JV1068;SPC MD       -   166,047.3     402,276.3     MT  (+/- 3 meters HH1 GPS) 
 JV1068
 JV1068_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2948136665(NAD 83)
 JV1068
 JV1068                          SUPERSEDED SURVEY CONTROL
 JV1068
 JV1068  NGVD 29 (11/26/84)   91.583  (m)          300.47   (f) ADJUSTED    2 0
 JV1068
 JV1068.Superseded values are not recommended for survey control.
 JV1068
 JV1068.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1068.See file dsdata.pdf to determine how the superseded data were derived.
 JV1068
 JV1068_MARKER: DB = BENCH MARK DISK
 JV1068_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1068_SP_SET: BRIDGE
 JV1068_STAMPING: 1596
 JV1068_MARK LOGO: WSSC
 JV1068_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1068_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1068+SATELLITE: SATELLITE OBSERVATIONS - August 11, 2014
 JV1068
 JV1068  HISTORY     - Date     Condition        Report By
 JV1068  HISTORY     - UNK      MONUMENTED       WSSC
 JV1068  HISTORY     - 1939     GOOD             WSSC
 JV1068  HISTORY     - 1987     GOOD             LOCSUR
 JV1068  HISTORY     - 20041006 GOOD             GEOCAC
 JV1068  HISTORY     - 20140811 GOOD             BASE9
 JV1068
 JV1068                          STATION DESCRIPTION
 JV1068
 JV1068'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1068'2.5 MI E FROM ASHTON.
 JV1068'ON THE HIGHLAND ROAD (U.S. HIGHWAY 29), AT SNELL BRIDGE OVER
 JV1068'PATUXENT RIVER, AND IN THE TOP OF THE NORTHEAST CORNER OF THE
 JV1068'NORTH PARAPET WALL.
 JV1068
 JV1068                          STATION RECOVERY (1987)
 JV1068
 JV1068'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1987 (JRD)
 JV1068'RECOVERED IN GOOD CONDITION.
 JV1068
 JV1068                          STATION RECOVERY (2004)
 JV1068
 JV1068'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV1068'FOUND THREE FEET SOUTH OF THE NORTH END OF THE PARAPET WALL ON THE
 JV1068'WEST SIDE OF THE BRIDGE.
 JV1068
 JV1068                          STATION RECOVERY (2014)
 JV1068
 JV1068'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 JV1068'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8499 ***********************************************************************
 AI8499  DESIGNATION -  15FA
 AI8499  PID         -  AI8499
 AI8499  STATE/COUNTY-  MD/HOWARD
 AI8499  COUNTRY     -  US
 AI8499  USGS QUAD   -  SYKESVILLE (2016)
 AI8499
 AI8499                         *CURRENT SURVEY CONTROL
 AI8499  ______________________________________________________________________
 AI8499* NAD 83(2011) POSITION- 39 18 10.41895(N) 076 57 10.87466(W)   ADJUSTED
 AI8499* NAD 83(2011) ELLIP HT-   116.230 (meters)        (06/27/12)   ADJUSTED
 AI8499* NAD 83(2011) EPOCH   -  2010.00
 AI8499* NAVD 88 ORTHO HEIGHT -   148.2   (meters)      486.    (feet) GPS OBS
 AI8499  ______________________________________________________________________
 AI8499  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8499  GEOID HEIGHT    -        -31.937 (meters)                     GEOID99
 AI8499  GEOID HEIGHT    -        -31.956 (meters)                     GEOID18
 AI8499  NAD 83(2011) X  -  1,115,698.085 (meters)                     COMP
 AI8499  NAD 83(2011) Y  - -4,814,605.156 (meters)                     COMP
 AI8499  NAD 83(2011) Z  -  4,018,467.531 (meters)                     COMP
 AI8499  LAPLACE CORR    -         -2.81  (seconds)                    DEFLEC18
 AI8499
 AI8499  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8499  Standards:
 AI8499         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8499            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8499  -------------------------------------------------------------------
 AI8499  NETWORK    1.09   1.27           0.49   0.39   0.65      0.04047020
 AI8499  -------------------------------------------------------------------
 AI8499  Click here for local accuracies and other accuracy information.
 AI8499
 AI8499.The horizontal coordinates were established by GPS observations
 AI8499.and adjusted by the National Geodetic Survey in June 2012.
 AI8499
 AI8499.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8499.been affixed to the stable North American tectonic plate. See 
 AI8499.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8499
 AI8499.The horizontal coordinates are valid at the epoch date displayed above
 AI8499.which is a decimal equivalence of Year/Month/Day.
 AI8499
 AI8499.The orthometric height was determined by GPS observations and a
 AI8499.high-resolution geoid model.
 AI8499
 AI8499.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8499.GEOID18 height accuracy estimate available here.
 AI8499
 AI8499.Click photographs - Photos may exist for this station.
 AI8499
 AI8499.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8499
 AI8499.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8499
 AI8499.The ellipsoidal height was determined by GPS observations
 AI8499.and is referenced to NAD 83.
 AI8499
 AI8499. The following values were computed from the NAD 83(2011) position.
 AI8499
 AI8499;                    North         East     Units Scale Factor Converg.
 AI8499;SPC MD       -   181,632.808   404,052.145   MT  0.99997757   +0 01 46.1
 AI8499;SPC MD       -   595,906.97  1,325,627.75   sFT  0.99997757   +0 01 46.1
 AI8499;UTM  18      - 4,352,208.299   331,601.398   MT  0.99994917   -1 14 14.5
 AI8499
 AI8499!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8499!SPC MD       -   0.99998176  x   0.99997757  =   0.99995934
 AI8499!UTM  18      -   0.99998176  x   0.99994917  =   0.99993094
 AI8499
 AI8499_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3160152208(NAD 83)
 AI8499
 AI8499                          SUPERSEDED SURVEY CONTROL
 AI8499
 AI8499  NAD 83(2007)-  39 18 10.41901(N)    076 57 10.87547(W) AD(2002.00) 0
 AI8499  ELLIP H (02/10/07)  116.260  (m)                       GP(2002.00)    
 AI8499  ELLIP H (08/30/02)  116.262  (m)                       GP(       ) 4 2
 AI8499  NAD 83(1991)-  39 18 10.41863(N)    076 57 10.87555(W) AD(       ) 1
 AI8499  ELLIP H (11/16/00)  116.176  (m)                       GP(       ) 4 1
 AI8499
 AI8499.Superseded values are not recommended for survey control.
 AI8499
 AI8499.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8499.See file dsdata.pdf to determine how the superseded data were derived.
 AI8499
 AI8499_MARKER: DD = SURVEY DISK
 AI8499_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8499_STAMPING: 15FA
 AI8499_MARK LOGO: MD-027
 AI8499_PROJECTION: FLUSH
 AI8499_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8499_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8499+STABILITY: SURFACE MOTION
 AI8499_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8499+SATELLITE: SATELLITE OBSERVATIONS - June 04, 2016
 AI8499
 AI8499  HISTORY     - Date     Condition        Report By
 AI8499  HISTORY     - 1992     MONUMENTED       MD-027
 AI8499  HISTORY     - 20000915 GOOD             MD-027
 AI8499  HISTORY     - 20020907 GOOD             WR
 AI8499  HISTORY     - 20160604 GOOD             USPSQD
 AI8499
 AI8499                          STATION DESCRIPTION
 AI8499
 AI8499'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8499'DESCRIPTION BY HOWARD COUNTY , 2000   THE STATION IS LOCATED AT
 AI8499'WEST FRIENDSHIP IN THE MEDIAN OF STATE  HIGHWAY 32, IT IS  22.8 FEET
 AI8499'NNE FROM A TRAFFIC SIGNAL POLE, 6.5 FEET TO  THE WEST EDGE OF ROAD
 AI8499'OF THE NORTHBOUND  LANE OF STATE HIGHWAY  32, AND  29 FEET EAST OF
 AI8499'THE EAST EDGE OF ROAD OF THE SOUTHBOUND  LANE OF SAID HIGHWAY
 AI8499'32.     THE STATION IS A STANDARD HOWARD COUNTY SURVEY DISC SET ON
 AI8499'A    CONCRETE BASE, FLUSH WITH THE GROUND.
 AI8499'
 AI8499
 AI8499                          STATION RECOVERY (2002)
 AI8499
 AI8499'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (JFU)
 AI8499'RECOVERED IN GOOD CONDITION.
 AI8499
 AI8499                          STATION RECOVERY (2016)
 AI8499
 AI8499'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 AI8499'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1258 ***********************************************************************
 HV1258  DESIGNATION -  16
 HV1258  PID         -  HV1258
 HV1258  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1258  COUNTRY     -  US
 HV1258  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1258
 HV1258                         *CURRENT SURVEY CONTROL
 HV1258  ______________________________________________________________________
 HV1258* NAD 83(1986) POSITION- 38 57 37.     (N) 076 56 10.     (W)   SCALED
 HV1258* NAVD 88 ORTHO HEIGHT -    17.979 (meters)       58.99  (feet) POSTED
 HV1258  ______________________________________________________________________
 HV1258  GEOID HEIGHT    -        -32.163 (meters)                     GEOID18
 HV1258  DYNAMIC HEIGHT  -         17.97  (meters)       59.0   (feet) COMP
 HV1258  MODELED GRAVITY -    980,104.0   (mgal)                       NAVD 88
 HV1258
 HV1258  VERT ORDER      -  * POSTED, SEE BELOW
 HV1258
 HV1258.The horizontal coordinates were scaled from a map and have
 HV1258.an estimated accuracy of +/- 6 seconds.
 HV1258
 HV1258.The orthometric height was determined by differential leveling
 HV1258.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV1258
 HV1258.* This is a POSTED BENCH MARK height.
 HV1258
 HV1258.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1258.GEOID18 height accuracy estimate available here.
 HV1258
 HV1258.Click photographs - Photos may exist for this station.
 HV1258
 HV1258.The dynamic height is computed by dividing the NAVD 88
 HV1258.geopotential number by the normal gravity value computed on the
 HV1258.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1258.degrees latitude (g = 980.6199 gals.).
 HV1258
 HV1258.The modeled gravity was interpolated from observed gravity values.
 HV1258
 HV1258;                    North         East    Units  Estimated Accuracy
 HV1258;SPC MD       -   143,600.      405,540.      MT  (+/- 180 meters Scaled)
 HV1258
 HV1258_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ322141(NAD 83)
 HV1258
 HV1258                          SUPERSEDED SURVEY CONTROL
 HV1258
 HV1258  NGVD 29 (11/26/84)   18.211  (m)           59.75   (f) ADJUSTED    1 2
 HV1258
 HV1258.Superseded values are not recommended for survey control.
 HV1258
 HV1258.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1258.See file dsdata.pdf to determine how the superseded data were derived.
 HV1258
 HV1258_MARKER: Q = CHISELED SQUARE
 HV1258_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV1258_SP_SET: COPING
 HV1258_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1258
 HV1258  HISTORY     - Date     Condition        Report By
 HV1258  HISTORY     - UNK      MONUMENTED       WSSC
 HV1258  HISTORY     - 1942     GOOD             CGS
 HV1258  HISTORY     - 1971     MARK NOT FOUND   WSSC
 HV1258
 HV1258                          STATION DESCRIPTION
 HV1258
 HV1258'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1258'AT RIVERDALE.
 HV1258'AT RIVERDALE, PRINCE GEORGES COUNTY, ON THE BALTIMORE AND OHIO
 HV1258'RAILROAD, 0.15 MILE SOUTH OF THE STATION, AT THE CROSSING OF
 HV1258'WASHINGTON STREET, 100 FEET WEST OF THE WEST RAIL OF THE SOUTH-BOUND
 HV1258'MAIN TRACK, 85 FEET SOUTH OF THE CENTER LINE OF THE STREET,
 HV1258'60 FEET WEST OF THE WEST RAIL OF THE STREET-CAR TRACK, AT THE
 HV1258'NORTH END OF SOME CONCRETE STEPS, AND ON THE COPING.  A CHISELED
 HV1258'SQUARE.
 HV1258
 HV1258                          STATION RECOVERY (1971)
 HV1258
 HV1258'RECOVERY NOTE BY WASH SUBURB SAN COMM 1971
 HV1258'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7082 ***********************************************************************
 HV7082  DESIGNATION -  16
 HV7082  PID         -  HV7082
 HV7082  STATE/COUNTY-  MD/CHARLES
 HV7082  COUNTRY     -  US
 HV7082  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7082
 HV7082                         *CURRENT SURVEY CONTROL
 HV7082  ______________________________________________________________________
 HV7082* NAD 83(1993) POSITION- 38 16 30.44471(N) 076 52 48.83008(W)   ADJUSTED
 HV7082* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV7082  ______________________________________________________________________
 HV7082  GEOID HEIGHT    -        -33.659 (meters)                     GEOID18
 HV7082  LAPLACE CORR    -         -1.57  (seconds)                    DEFLEC18
 HV7082  HORZ ORDER      -  SECOND
 HV7082
 HV7082.The horizontal coordinates were established by classical geodetic methods
 HV7082.and adjusted by the National Geodetic Survey in November 1994.
 HV7082
 HV7082.The orthometric height was scaled from a topographic map.
 HV7082
 HV7082.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7082.GEOID18 height accuracy estimate available here.
 HV7082
 HV7082.Click photographs - Photos may exist for this station.
 HV7082
 HV7082.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7082
 HV7082. The following values were computed from the NAD 83(1993) position.
 HV7082
 HV7082;                    North         East     Units Scale Factor Converg.
 HV7082;SPC MD       -    67,548.388   410,480.264   MT  1.00000442   +0 04 30.6
 HV7082;SPC MD       -   221,615.00  1,346,717.33   sFT  1.00000442   +0 04 30.6
 HV7082;SPC VA N     - 2,068,787.645 3,641,723.030   MT  0.99996613   +1 00 39.3
 HV7082;SPC VA N     - 6,787,347.47 11,947,886.31   sFT  0.99996613   +1 00 39.3
 HV7082;UTM  18      - 4,238,013.218   335,532.477   MT  0.99993314   -1 09 53.8
 HV7082
 HV7082!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7082!SPC MD       -   1.00000485  x   1.00000442  =   1.00000927
 HV7082!SPC VA N     -   1.00000485  x   0.99996613  =   0.99997098
 HV7082!UTM  18      -   1.00000485  x   0.99993314  =   0.99993799
 HV7082
 HV7082_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3553238013(NAD 83)
 HV7082
 HV7082                          SUPERSEDED SURVEY CONTROL
 HV7082
 HV7082  NAD 83(1991)-  38 16 30.44418(N)    076 52 48.83569(W) AD(       ) 2
 HV7082  NAD 83(1986)-  38 16 30.44484(N)    076 52 48.84556(W) AD(       ) 2
 HV7082  NAD 27      -  38 16 29.98400(N)    076 52 49.95700(W) AD(       ) 2
 HV7082
 HV7082.Superseded values are not recommended for survey control.
 HV7082
 HV7082.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7082.See file dsdata.pdf to determine how the superseded data were derived.
 HV7082
 HV7082_MARKER: DS = TRIANGULATION STATION DISK
 HV7082_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7082_MARK LOGO: USN
 HV7082_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7082
 HV7082  HISTORY     - Date     Condition        Report By
 HV7082  HISTORY     - 1954     MONUMENTED       USN
 HV7082  HISTORY     - 1960     GOOD             CGS
 HV7082
 HV7082                          STATION DESCRIPTION
 HV7082
 HV7082'DESCRIBED BY US NAVY 1954 (DAJ)
 HV7082'STATION IS LOCATED ABOUT 7 MILES SOUTHEAST OF THE POTOMAC RIVER
 HV7082'BRIDGE, 3 MILES SOUTHEAST OF TOMPKINSVILLE, MARYLAND, 2 MILES
 HV7082'NORTHEAST OF COLONIAL BEACH, VIRGINIA, AND ON THE NORTHEAST BANK
 HV7082'OF THE POTOMAC RIVER.  IT IS 121 FEET SOUTHWEST OF THE SOUTHWEST
 HV7082'CORNER OF A HOUSE AND 31 FEET NORTH OF A RETAINING WALL.  THE
 HV7082'MARK IS A 6 INCH TERRA COTTA CONCRETE FILLED PIPE, PROJECTING 3
 HV7082'INCHES WITH A STANDARD BUREAU OF ORDNANCE TRIANGULATION DISK ATOP
 HV7082'WHICH IS NOT STAMPED.
 HV7082'
 HV7082'A TRAVERSE CONNECTION WAS MADE FROM STATION CRAIN (USE) TO 16 (B
 HV7082'OF O).  THE DISTANCE IS 11.881 METERS OR 38.98 FEET.
 HV7082'
 HV7082'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND
 HV7082'STATE HIGHWAY 3, 2 MILES NORTH OF THE POTOMAC RIVER BRIDGE, GO
 HV7082'SOUTHEAST ON HIGHWAY 3 FOR 2.2 MILES TO THE INTERSECTION OF STATE
 HV7082'HIGHWAY 229.  CONTINUE ON HIGHWAY 3 FOR 3.4 MILES TO
 HV7082'TOMPKINSVILLE.  CONTINUE ON HIGHWAY 3 FOR 2.0 MILES TO A SIDE
 HV7082'ROAD.  TURN RIGHT AND GO SOUTH FOR 0.5 MILE TO A SIDE ROAD LEFT,
 HV7082'TURN LEFT (SOUTHEAST) FOR 1.2 MILES TO A HOUSE AND THE STATION AS
 HV7082'DESCRIBED.
 HV7082
 HV7082                          STATION RECOVERY (1960)
 HV7082
 HV7082'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV7082'STATION RECOVERED AS DESCRIBED.  THE PUBLISHED DESCRIPTION IS
 HV7082'ADEQUATE WITH THE FOLLOWING CORRECTIONS--
 HV7082'
 HV7082'STATE HIGHWAY 3 IS NOW STATE HIGHWAY 259.
 HV7082'
 HV7082'STATE HIGHWAY 229 IS NOW MORGANTOWN ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1177 ***********************************************************************
 JV1177  DESIGNATION -  16 PRR
 JV1177  PID         -  JV1177
 JV1177  STATE/COUNTY-  MD/BALTIMORE
 JV1177  COUNTRY     -  US
 JV1177  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1177
 JV1177                         *CURRENT SURVEY CONTROL
 JV1177  ______________________________________________________________________
 JV1177* NAD 83(1986) POSITION- 39 27 51.     (N) 076 38 37.     (W)   SCALED
 JV1177* NAVD 88 ORTHO HEIGHT -   100.255 (meters)      328.92  (feet) ADJUSTED
 JV1177  ______________________________________________________________________
 JV1177  GEOID HEIGHT    -        -32.406 (meters)                     GEOID18
 JV1177  DYNAMIC HEIGHT  -        100.202 (meters)      328.75  (feet) COMP
 JV1177  MODELED GRAVITY -    980,100.4   (mgal)                       NAVD 88
 JV1177
 JV1177  VERT ORDER      -  SECOND    CLASS 0
 JV1177
 JV1177.The horizontal coordinates were scaled from a map and have
 JV1177.an estimated accuracy of +/- 6 seconds.
 JV1177
 JV1177.The orthometric height was determined by differential leveling and
 JV1177.adjusted by the NATIONAL GEODETIC SURVEY
 JV1177.in June 1991.
 JV1177
 JV1177.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1177.GEOID18 height accuracy estimate available here.
 JV1177
 JV1177.Click photographs - Photos may exist for this station.
 JV1177
 JV1177.The dynamic height is computed by dividing the NAVD 88
 JV1177.geopotential number by the normal gravity value computed on the
 JV1177.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1177.degrees latitude (g = 980.6199 gals.).
 JV1177
 JV1177.The modeled gravity was interpolated from observed gravity values.
 JV1177
 JV1177;                    North         East    Units  Estimated Accuracy
 JV1177;SPC MD       -   199,600.      430,670.      MT  (+/- 180 meters Scaled)
 JV1177
 JV1177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ586695(NAD 83)
 JV1177
 JV1177                          SUPERSEDED SURVEY CONTROL
 JV1177
 JV1177  NGVD 29 (11/26/84)  100.478  (m)          329.65   (f) ADJUSTED    2 0
 JV1177
 JV1177.Superseded values are not recommended for survey control.
 JV1177
 JV1177.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1177.See file dsdata.pdf to determine how the superseded data were derived.
 JV1177
 JV1177_MARKER: B = BOLT
 JV1177_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1177_SP_SET: STEP
 JV1177_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1177
 JV1177  HISTORY     - Date     Condition        Report By
 JV1177  HISTORY     - UNK      MONUMENTED       PRR
 JV1177  HISTORY     - 1935     GOOD             CGS
 JV1177
 JV1177                          STATION DESCRIPTION
 JV1177
 JV1177'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1177'AT TEXAS.
 JV1177'SET IN STEP OF MIDDLE DOOR OF STATION AT TEXAS, 57 FEET NORTH OF
 JV1177'CENTER OF TEXAS ROAD.  33 FEET EAST OF CENTERLINE OF EAST TRACK
 JV1177'OF PENNSYLVANIA RAILROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1178 ***********************************************************************
 JV1178  DESIGNATION -  16 PRR RESET 1959
 JV1178  PID         -  JV1178
 JV1178  STATE/COUNTY-  MD/BALTIMORE
 JV1178  COUNTRY     -  US
 JV1178  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1178
 JV1178                         *CURRENT SURVEY CONTROL
 JV1178  ______________________________________________________________________
 JV1178* NAD 83(1986) POSITION- 39 27 51.     (N) 076 38 37.     (W)   SCALED
 JV1178* NAVD 88 ORTHO HEIGHT -   100.77  (meters)      330.6   (feet) RESET
 JV1178  ______________________________________________________________________
 JV1178  GEOID HEIGHT    -        -32.406 (meters)                     GEOID18
 JV1178  VERT ORDER      -  THIRD
 JV1178
 JV1178.The horizontal coordinates were scaled from a map and have
 JV1178.an estimated accuracy of +/- 6 seconds.
 JV1178
 JV1178.The orthometric height was computed from unverified reset data.
 JV1178
 JV1178.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1178.GEOID18 height accuracy estimate available here.
 JV1178
 JV1178.Click photographs - Photos may exist for this station.
 JV1178
 JV1178;                    North         East    Units  Estimated Accuracy
 JV1178;SPC MD       -   199,600.      430,670.      MT  (+/- 180 meters Scaled)
 JV1178
 JV1178_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ586695(NAD 83)
 JV1178
 JV1178                          SUPERSEDED SURVEY CONTROL
 JV1178
 JV1178  NGVD 29 (??/??/??)  100.99   (m)          331.3    (f) RESET       3  
 JV1178
 JV1178.Superseded values are not recommended for survey control.
 JV1178
 JV1178.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1178.See file dsdata.pdf to determine how the superseded data were derived.
 JV1178
 JV1178_MARKER: DB = BENCH MARK DISK
 JV1178_SETTING: 66 = SET IN ROCK OUTCROP
 JV1178_STAMPING: 16 PRR RESET 1959
 JV1178_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV1178+STABILITY: POSITION/ELEVATION WELL
 JV1178
 JV1178  HISTORY     - Date     Condition        Report By
 JV1178  HISTORY     - 1959     MONUMENTED       CGS
 JV1178
 JV1178                          STATION DESCRIPTION
 JV1178
 JV1178'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1178'IN TEXAS.
 JV1178'AT TEXAS, BALTIMORE COUNTY, NEAR INTERSECTION OF CHURCH LANE AND
 JV1178'PENNSYLVANIA RAILROAD TRACKS, ON EAST EDGE OF RAILROAD RIGHT-OF-WAY,
 JV1178'73 FEET SOUTH OF CENTER LINE OF CHURCH LANE, AND 10 FEET EAST
 JV1178'OF CENTER LINE OF EAST TRACK.  A STANDARD DISK SET IN DRILL HOLE
 JV1178'IN ROCK OUTCROP AND STAMPED 16 PRR RESET 1959.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0423 ***********************************************************************
 JV0423  DESIGNATION -  16 W
 JV0423  PID         -  JV0423
 JV0423  STATE/COUNTY-  MD/BALTIMORE
 JV0423  COUNTRY     -  US
 JV0423  USGS QUAD   -  WHITE MARSH (2016)
 JV0423
 JV0423                         *CURRENT SURVEY CONTROL
 JV0423  ______________________________________________________________________
 JV0423* NAD 83(1986) POSITION- 39 24 43.     (N) 076 23 35.     (W)   SCALED
 JV0423* NAVD 88 ORTHO HEIGHT -    19.120 (meters)       62.73  (feet) ADJUSTED
 JV0423  ______________________________________________________________________
 JV0423  GEOID HEIGHT    -        -32.981 (meters)                     GEOID18
 JV0423  DYNAMIC HEIGHT  -         19.110 (meters)       62.70  (feet) COMP
 JV0423  MODELED GRAVITY -    980,105.8   (mgal)                       NAVD 88
 JV0423
 JV0423  VERT ORDER      -  FIRST     CLASS I
 JV0423
 JV0423.The horizontal coordinates were scaled from a map and have
 JV0423.an estimated accuracy of +/- 6 seconds.
 JV0423
 JV0423.The orthometric height was determined by differential leveling and
 JV0423.adjusted by the NATIONAL GEODETIC SURVEY
 JV0423.in June 1991.
 JV0423
 JV0423.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0423.GEOID18 height accuracy estimate available here.
 JV0423
 JV0423.Click photographs - Photos may exist for this station.
 JV0423
 JV0423.The dynamic height is computed by dividing the NAVD 88
 JV0423.geopotential number by the normal gravity value computed on the
 JV0423.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0423.degrees latitude (g = 980.6199 gals.).
 JV0423
 JV0423.The modeled gravity was interpolated from observed gravity values.
 JV0423
 JV0423;                    North         East    Units  Estimated Accuracy
 JV0423;SPC MD       -   193,910.      452,270.      MT  (+/- 180 meters Scaled)
 JV0423
 JV0423_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ800634(NAD 83)
 JV0423
 JV0423                          SUPERSEDED SURVEY CONTROL
 JV0423
 JV0423  NGVD 29 (11/26/84)   19.365  (m)           63.53   (f) ADJUSTED    1 1
 JV0423
 JV0423.Superseded values are not recommended for survey control.
 JV0423
 JV0423.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0423.See file dsdata.pdf to determine how the superseded data were derived.
 JV0423
 JV0423_MARKER: DD = SURVEY DISK
 JV0423_SETTING: 66 = SET IN ROCK OUTCROP
 JV0423_STAMPING: NO 16 W 1926 63.596
 JV0423_MARK LOGO: USGS
 JV0423_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV0423+STABILITY: POSITION/ELEVATION WELL
 JV0423
 JV0423  HISTORY     - Date     Condition        Report By
 JV0423  HISTORY     - 1926     MONUMENTED       USGS
 JV0423  HISTORY     - 1971     GOOD             NGS
 JV0423
 JV0423                          STATION DESCRIPTION
 JV0423
 JV0423'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0423'4 MI W FROM JOPPA.
 JV0423'ABOUT 3.15 MILES WEST ALONG STATE HIGHWAY 7 FROM THE TRINITY
 JV0423'LUTHERAN CHURCH AND CEMETERY AT JOPPA, THENCE 0.5 MILE SOUTHEAST
 JV0423'ALONG JONES ROAD, THENCE 0.3 MILE SOUTHWEST ALONG THE BALTIMORE
 JV0423'AND OHIO RAILROAD, 92 FEET NORTHEAST OF THE NORTHEAST END OF THE
 JV0423'RAILROAD BRIDGE OVER THE GUNPOWDER FALLS, 36 FEET SOUTHEAST OF
 JV0423'THE SOUTHEAST RAIL, SET IN THE TOP OF A 1- X 2-FOOT ROCK OUTCROP
 JV0423'PROJECTING 2 INCHES, 13 1/2 FEET WEST OF THE 2ND TELEPHONE POLE
 JV0423'NORTHEAST OF THE BRIDGE, AND ABOUT 2 FEET BELOW THE LEVEL OF
 JV0423'THE TRACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7881 ***********************************************************************
 DH7881  DESIGNATION -  16 WDK RESET
 DH7881  PID         -  DH7881
 DH7881  STATE/COUNTY-  MD/WORCESTER
 DH7881  COUNTRY     -  US
 DH7881  USGS QUAD   -  PUBLIC LANDING (2016)
 DH7881
 DH7881                         *CURRENT SURVEY CONTROL
 DH7881  ______________________________________________________________________
 DH7881* NAD 83(1986) POSITION- 38 09 45.9    (N) 075 18 35.1    (W)   HD_HELD2
 DH7881* NAVD 88 ORTHO HEIGHT -     7.559 (meters)       24.80  (feet) ADJUSTED
 DH7881  ______________________________________________________________________
 DH7881  GEOID HEIGHT    -        -36.256 (meters)                     GEOID18
 DH7881  DYNAMIC HEIGHT  -          7.554 (meters)       24.78  (feet) COMP
 DH7881  MODELED GRAVITY -    979,984.3   (mgal)                       NAVD 88
 DH7881
 DH7881  VERT ORDER      -  SECOND    CLASS I
 DH7881
 DH7881.The horizontal coordinates were established by autonomous hand held GPS
 DH7881.observations and have an estimated accuracy of +/- 10 meters.
 DH7881
 DH7881.The orthometric height was determined by differential leveling and
 DH7881.adjusted by the NATIONAL GEODETIC SURVEY
 DH7881.in June 2006.
 DH7881
 DH7881.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7881.GEOID18 height accuracy estimate available here.
 DH7881
 DH7881.Click photographs - Photos may exist for this station.
 DH7881
 DH7881.The dynamic height is computed by dividing the NAVD 88
 DH7881.geopotential number by the normal gravity value computed on the
 DH7881.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7881.degrees latitude (g = 980.6199 gals.).
 DH7881
 DH7881.The modeled gravity was interpolated from observed gravity values.
 DH7881
 DH7881;                    North         East    Units  Estimated Accuracy
 DH7881;SPC MD       -    56,439.      548,126.      MT  (+/- 10 meters HH2 GPS)
 DH7881
 DH7881_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7286423918(NAD 83)
 DH7881
 DH7881                          SUPERSEDED SURVEY CONTROL
 DH7881
 DH7881.No superseded survey control is available for this station.
 DH7881
 DH7881_MARKER: DB = BENCH MARK DISK
 DH7881_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DH7881_STAMPING: 16 W.D.K 1963 RESET 1965
 DH7881_MARK LOGO: USGS
 DH7881_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH7881_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DH7881+STABILITY: SURFACE MOTION
 DH7881_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7881+SATELLITE: SATELLITE OBSERVATIONS - December 17, 2003
 DH7881
 DH7881  HISTORY     - Date     Condition        Report By
 DH7881  HISTORY     - 1965     MONUMENTED       USGS
 DH7881  HISTORY     - 20031217 GOOD             MDSHA
 DH7881
 DH7881                          STATION DESCRIPTION
 DH7881
 DH7881'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 DH7881'THE STATION IS LOCATED IN THE TOWN OF SPENCE. TO REACH THE STATION
 DH7881'FROM THE COURTHOUSE IN SNOW HILL, GO NORTHEAST ALONG BUSINESS U.S.113
 DH7881'FOR 0.15 MI (0.24 KM) TO STATE HIGHWAY 365. TURN RIGHT AND GO
 DH7881'SOUTHEAST ALONG STATE HIGHWAY 365 FOR 1.0 MI (1.61 KM) TO U.S.113.
 DH7881'CONTINUE SOUTHEAST ALONG STATE HIGHWAY 365 FOR 3.6 MI (5.79 KM) TO
 DH7881'TAYLOR ROAD AND THE STATION ON THE LEFT. THE STATION IS A STANDARD
 DH7881'USGS DISK SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES.  IT
 DH7881'IS 162.5 FT (49.5 M) NORTHEAST OF THE CENTER LINE OF STATE HIGHWAY
 DH7881'365, 24.2 FT (7.4 M) NORTHWEST OF THE CENTER OF TAYLOR ROAD, 24.0 FT
 DH7881'(7.3 M) EAST OF POWER POLE 55128-85723, 61.0 FT (18.6 M) NORTH AND
 DH7881'ACROSS THE ROAD FROM THE NORTHWEST CORNER OF A 1 1/2 STORY FRAME HOUSE
 DH7881'AND ABOUT 4 FT (1.2 M) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1532 ***********************************************************************
 HV1532  DESIGNATION -  16.508
 HV1532  PID         -  HV1532
 HV1532  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1532  COUNTRY     -  US
 HV1532  USGS QUAD   -  SOUTH RIVER (2016)
 HV1532
 HV1532                         *CURRENT SURVEY CONTROL
 HV1532  ______________________________________________________________________
 HV1532* NAD 83(1986) POSITION- 38 57 15.     (N) 076 33 13.     (W)   SCALED
 HV1532* NAVD 88 ORTHO HEIGHT -     4.481 (meters)       14.70  (feet) ADJUSTED
 HV1532  ______________________________________________________________________
 HV1532  GEOID HEIGHT    -        -33.244 (meters)                     GEOID18
 HV1532  DYNAMIC HEIGHT  -          4.478 (meters)       14.69  (feet) COMP
 HV1532  MODELED GRAVITY -    980,068.8   (mgal)                       NAVD 88
 HV1532
 HV1532  VERT ORDER      -  FIRST     CLASS I
 HV1532
 HV1532.The horizontal coordinates were scaled from a map and have
 HV1532.an estimated accuracy of +/- 6 seconds.
 HV1532
 HV1532.The orthometric height was determined by differential leveling and
 HV1532.adjusted by the NATIONAL GEODETIC SURVEY
 HV1532.in June 1991.
 HV1532
 HV1532.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1532.GEOID18 height accuracy estimate available here.
 HV1532
 HV1532.Click photographs - Photos may exist for this station.
 HV1532
 HV1532.The dynamic height is computed by dividing the NAVD 88
 HV1532.geopotential number by the normal gravity value computed on the
 HV1532.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1532.degrees latitude (g = 980.6199 gals.).
 HV1532
 HV1532.The modeled gravity was interpolated from observed gravity values.
 HV1532
 HV1532;                    North         East    Units  Estimated Accuracy
 HV1532;SPC MD       -   143,010.      438,690.      MT  (+/- 180 meters Scaled)
 HV1532
 HV1532_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ653128(NAD 83)
 HV1532
 HV1532                          SUPERSEDED SURVEY CONTROL
 HV1532
 HV1532  NGVD 29 (11/26/84)    4.723  (m)           15.50   (f) ADJUSTED    1 1
 HV1532
 HV1532.Superseded values are not recommended for survey control.
 HV1532
 HV1532.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1532.See file dsdata.pdf to determine how the superseded data were derived.
 HV1532
 HV1532_MARKER: B = BOLT
 HV1532_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1532_SP_SET: BRIDGE ABUTMENT
 HV1532_MARK LOGO: USGS
 HV1532_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1532
 HV1532  HISTORY     - Date     Condition        Report By
 HV1532  HISTORY     - UNK      MONUMENTED       USGS
 HV1532  HISTORY     - 1971     GOOD             NGS
 HV1532  HISTORY     - 1989     MARK NOT FOUND   USPSQD
 HV1532
 HV1532                          STATION DESCRIPTION
 HV1532
 HV1532'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1532'AT EDGEWATER.
 HV1532'AT EDGEWATER, AT THE NORTHEAST END OF THE STATE HIGHWAY 2
 HV1532'BRIDGE OVER THE SOUTH RIVER, SET IN THE TOP AND 2.0 FEET
 HV1532'SOUTHEAST OF THE NORTHWEST END OF THE NORTHEAST CONCRETE
 HV1532'ABUTMENT OF THE BRIDGE, 20 1/2 FEET NORTHWEST OF THE CENTER
 HV1532'LINE OF THE HIGHWAY, 2.2 FEET WEST OF THE NORTH CORNER OF THE
 HV1532'CONCRETE FOUNDATION FOR THE NORTHWEST LAMP POST ON THE BRIDGE,
 HV1532'5.2 FEET WEST OF BENCH MARK RV 1 (MSHD), AND ABOUT 1 FOOT
 HV1532'ABOVE THE LEVEL OF THE HIGHWAY.  NOTE-- THE TOP PART OF THE
 HV1532'CONCRETE IS GONE FROM THE NORTHWEST SIDE OF THE BOLT.
 HV1532
 HV1532                          STATION RECOVERY (1989)
 HV1532
 HV1532'RECOVERY NOTE BY US POWER SQUADRON 1989 (HS)
 HV1532'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1531 ***********************************************************************
 HV1531  DESIGNATION -  16.550
 HV1531  PID         -  HV1531
 HV1531  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1531  COUNTRY     -  US
 HV1531  USGS QUAD   -  SOUTH RIVER (2016)
 HV1531
 HV1531                         *CURRENT SURVEY CONTROL
 HV1531  ______________________________________________________________________
 HV1531* NAD 83(1986) POSITION- 38 56 56.     (N) 076 33 27.     (W)   SCALED
 HV1531* NAVD 88 ORTHO HEIGHT -     4.475 (meters)       14.68  (feet) ADJUSTED
 HV1531  ______________________________________________________________________
 HV1531  GEOID HEIGHT    -        -33.243 (meters)                     GEOID18
 HV1531  DYNAMIC HEIGHT  -          4.472 (meters)       14.67  (feet) COMP
 HV1531  MODELED GRAVITY -    980,068.4   (mgal)                       NAVD 88
 HV1531
 HV1531  VERT ORDER      -  FIRST     CLASS I
 HV1531
 HV1531.The horizontal coordinates were scaled from a map and have
 HV1531.an estimated accuracy of +/- 6 seconds.
 HV1531
 HV1531.The orthometric height was determined by differential leveling and
 HV1531.adjusted by the NATIONAL GEODETIC SURVEY
 HV1531.in June 1991.
 HV1531
 HV1531.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1531.GEOID18 height accuracy estimate available here.
 HV1531
 HV1531.Click photographs - Photos may exist for this station.
 HV1531
 HV1531.The dynamic height is computed by dividing the NAVD 88
 HV1531.geopotential number by the normal gravity value computed on the
 HV1531.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1531.degrees latitude (g = 980.6199 gals.).
 HV1531
 HV1531.The modeled gravity was interpolated from observed gravity values.
 HV1531
 HV1531;                    North         East    Units  Estimated Accuracy
 HV1531;SPC MD       -   142,430.      438,360.      MT  (+/- 180 meters Scaled)
 HV1531
 HV1531_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ650122(NAD 83)
 HV1531
 HV1531                          SUPERSEDED SURVEY CONTROL
 HV1531
 HV1531  NGVD 29 (11/26/84)    4.717  (m)           15.48   (f) ADJUSTED    1 1
 HV1531
 HV1531.Superseded values are not recommended for survey control.
 HV1531
 HV1531.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1531.See file dsdata.pdf to determine how the superseded data were derived.
 HV1531
 HV1531_MARKER: B = BOLT
 HV1531_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1531_SP_SET: BRIDGE ABUTMENT
 HV1531_MARK LOGO: USGS
 HV1531_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1531
 HV1531  HISTORY     - Date     Condition        Report By
 HV1531  HISTORY     - UNK      MONUMENTED       USGS
 HV1531  HISTORY     - 1971     GOOD             NGS
 HV1531  HISTORY     - 20000217 MARK NOT FOUND   USPSQD
 HV1531
 HV1531                          STATION DESCRIPTION
 HV1531
 HV1531'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1531'0.4 MI SW FROM EDGEWATER.
 HV1531'ABOUT 0.45 MILE SOUTHWEST ALONG STATE HIGHWAY 2 FROM THE
 HV1531'NORTHEAST END OF THE HIGHWAY BRIDGE OVER THE SOUTH RIVER AT
 HV1531'EDGEWATER, AT THE SOUTHWEST END OF THE BRIDGE, SET IN THE TOP
 HV1531'AND 2.1 FEET NORTHWEST OF THE SOUTHEAST END OF THE SOUTHWEST
 HV1531'CONCRETE ABUTMENT OF THE BRIDGE, 19 FEET SOUTHEAST OF THE
 HV1531'CENTER LINE OF THE HIGHWAY, 2.3 FEET EAST OF THE SOUTH CORNER
 HV1531'OF THE CONCRETE FOUNDATION FOR THE SOUTHEAST LAMP POST ON
 HV1531'THE BRIDGE, 34.9 FEET SOUTHEAST AND ACROSS THE HIGHWAY FROM
 HV1531'RV 2 (MSHD), AND ABOUT 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
 HV1531
 HV1531                          STATION RECOVERY (2000)
 HV1531
 HV1531'RECOVERY NOTE BY US POWER SQUADRON 2000
 HV1531'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1297 ***********************************************************************
 HV1297  DESIGNATION -  1600 WSSC
 HV1297  PID         -  HV1297
 HV1297  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1297  COUNTRY     -  US
 HV1297  USGS QUAD   -  LANHAM (2016)
 HV1297
 HV1297                         *CURRENT SURVEY CONTROL
 HV1297  ______________________________________________________________________
 HV1297* NAD 83(1986) POSITION- 38 59 26.     (N) 076 49 38.     (W)   SCALED
 HV1297* NAVD 88 ORTHO HEIGHT -    45.56  (+/-2cm)      149.5   (feet) VERTCON3
 HV1297  ______________________________________________________________________
 HV1297  GEOID HEIGHT    -        -32.412 (meters)                     GEOID18
 HV1297  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1297
 HV1297.The horizontal coordinates were scaled from a map and have
 HV1297.an estimated accuracy of +/- 6 seconds.
 HV1297
 HV1297.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1297.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1297
 HV1297.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1297.GEOID18 height accuracy estimate available here.
 HV1297
 HV1297.The vertical order pertains to the NGVD 29 superseded value.
 HV1297
 HV1297.Click photographs - Photos may exist for this station.
 HV1297
 HV1297;                    North         East    Units  Estimated Accuracy
 HV1297;SPC MD       -   146,970.      414,970.      MT  (+/- 180 meters Scaled)
 HV1297
 HV1297_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ417173(NAD 83)
 HV1297
 HV1297                          SUPERSEDED SURVEY CONTROL
 HV1297
 HV1297  NGVD 29 (11/26/84)   45.779  (m)          150.19   (f) ADJUSTED    2 0
 HV1297
 HV1297.Superseded values are not recommended for survey control.
 HV1297
 HV1297.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1297.See file dsdata.pdf to determine how the superseded data were derived.
 HV1297
 HV1297_MARKER: DD = SURVEY DISK
 HV1297_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1297_STAMPING: 1600
 HV1297_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1297
 HV1297  HISTORY     - Date     Condition        Report By
 HV1297  HISTORY     - UNK      MONUMENTED       WSSC
 HV1297  HISTORY     - 1944     GOOD             WSSC
 HV1297
 HV1297                          STATION DESCRIPTION
 HV1297
 HV1297'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1297'0.5 MI NW FROM GLENN DALE.
 HV1297'ON THE BRANCHVILLE-GLENN DALE ROAD, SOUTH OF A FARM-ROAD INTERSECTION,
 HV1297'NEAR THE NORTH LINE OF THE GASCH PROPERTY, AND ON THE EAST SIDE
 HV1297'OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6517 ***********************************************************************
 HV6517  DESIGNATION -  16000 YARD F RNG TRIAL
 HV6517  PID         -  HV6517
 HV6517  STATE/COUNTY-  MD/ST MARYS
 HV6517  COUNTRY     -  US
 HV6517  USGS QUAD   -  POINT LOOKOUT (2016)
 HV6517
 HV6517                         *CURRENT SURVEY CONTROL
 HV6517  ______________________________________________________________________
 HV6517* NAD 83(1993) POSITION- 38 04 21.75658(N) 076 22 08.82499(W)   ADJUSTED
 HV6517* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6517  ______________________________________________________________________
 HV6517  GEOID HEIGHT    -        -35.128 (meters)                     GEOID18
 HV6517  LAPLACE CORR    -         -6.17  (seconds)                    DEFLEC18
 HV6517  HORZ ORDER      -  THIRD
 HV6517
 HV6517.The horizontal coordinates were established by classical geodetic methods
 HV6517.and adjusted by the National Geodetic Survey in November 1994.
 HV6517
 HV6517.The orthometric height was scaled from a topographic map.
 HV6517
 HV6517.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6517.GEOID18 height accuracy estimate available here.
 HV6517
 HV6517.Click photographs - Photos may exist for this station.
 HV6517
 HV6517.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6517
 HV6517. The following values were computed from the NAD 83(1993) position.
 HV6517
 HV6517;                    North         East     Units Scale Factor Converg.
 HV6517;SPC MD       -    45,264.408   455,359.337   MT  1.00004731   +0 23 45.5
 HV6517;SPC MD       -   148,504.98  1,493,958.09   sFT  1.00004731   +0 23 45.5
 HV6517;SPC VA S     - 1,195,146.392 3,686,963.725   MT  1.00002107   +1 17 35.8
 HV6517;SPC VA S     - 3,921,076.12 12,096,313.49   sFT  1.00002107   +1 17 35.8
 HV6517;UTM  18      - 4,214,767.293   379,911.108   MT  0.99977761   -0 50 39.8
 HV6517
 HV6517!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6517!SPC MD       -   1.00000556  x   1.00004731  =   1.00005287
 HV6517!SPC VA S     -   1.00000556  x   1.00002107  =   1.00002663
 HV6517!UTM  18      -   1.00000556  x   0.99977761  =   0.99978317
 HV6517
 HV6517:                Primary Azimuth Mark                     Grid Az
 HV6517:SPC MD       -  ST GEORGE 5                              289 05 18.0
 HV6517:SPC VA S     -  ST GEORGE 5                              288 11 27.7
 HV6517:UTM  18      -  ST GEORGE 5                              290 19 43.3
 HV6517
 HV6517_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7991114767(NAD 83)
 HV6517
 HV6517|---------------------------------------------------------------------|
 HV6517| PID    Reference Object                     Distance      Geod. Az  |
 HV6517|                                                           dddmmss.s |
 HV6517| HV6516 16000 YARD REAR RANGE               APPROX. 0.6 KM 0315249.5 |
 HV6517| HV6518 16000 YARD FRONT RANGE               36.722 METERS 15728     |
 HV6517| HV6549 ST GEORGE 5                         APPROX. 9.8 KM 2892903.5 |
 HV6517|---------------------------------------------------------------------|
 HV6517
 HV6517                          SUPERSEDED SURVEY CONTROL
 HV6517
 HV6517  NAD 83(1991)-  38 04 21.75555(N)    076 22 08.82734(W) AD(       ) 3
 HV6517  NAD 83(1986)-  38 04 21.75731(N)    076 22 08.84179(W) AD(       ) 3
 HV6517  NAD 27      -  38 04 21.30500(N)    076 22 10.02300(W) AD(       ) 3
 HV6517  USSD        -  38 04 21.68600(N)    076 22 09.75000(W) AD(       ) 3
 HV6517
 HV6517.Superseded values are not recommended for survey control.
 HV6517
 HV6517.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6517.See file dsdata.pdf to determine how the superseded data were derived.
 HV6517
 HV6517_MARKER: DS = TRIANGULATION STATION DISK
 HV6517_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6517_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6517
 HV6517  HISTORY     - Date     Condition        Report By
 HV6517  HISTORY     - 1919     MONUMENTED       CGS
 HV6517
 HV6517                          STATION DESCRIPTION
 HV6517
 HV6517'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6517'STATION IS ON NE SHORE OF POTOMAC RIVER, 48 METERS SE OF PRESENT
 HV6517'(1919) ENTRANCE TO POTTER CREEK WHICH IS ABOUT 400 METERS SE
 HV6517'OF ENTRANCE SHOWN ON CHART.  STATION IS IN EDGE OF MARSH, AT
 HV6517'NE EDGE OF A PINE WOODS WHICH STRETCHES NE FROM HALL HOUSE.  IT
 HV6517'IS 8 METERS FROM HIGH-WATER LINE, AND 19 METERS NW OF SOLID
 HV6517'GROUND NEAR BEACH.
 HV6517'
 HV6517'STATION AND REFERENCE MARKS ARE BRONZE TABLETS (BUREAU OF
 HV6517'ORDNANCE) IN CONCRETE IN TILES AS DESCRIBED IN NOTES 6B AND 13B.
 HV6517'
 HV6517'REFERENCE MARK, ON WHICH THE ARROW POINTS AWAY FROM THE
 HV6517'STATION, IS ON LEVEL GROUND, 5 METERS FROM EDGE OF SWAMP,
 HV6517'17 METERS FROM THE BANK ALONG SHORE, IN THE EDGE OF THE WOODS, AND
 HV6517'27.98 METERS (91.8 FEET) FROM THE STATION, IN AZIMUTH 325 DEG 10
 HV6517'MIN.  STATION 16,000-YARD FRONT RANGE IS 36.72 METERS (120.5
 HV6517'FEET) SSE FROM THE STATION.  THE CUPOLA OF FRANK SMITHS BARN IS
 HV6517'ABOUT 500 METERS FROM THE STATION IN AZIMUTH 182 DEG 37
 HV6517'MIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6518 ***********************************************************************
 HV6518  DESIGNATION -  16000 YARD FRONT RANGE
 HV6518  PID         -  HV6518
 HV6518  STATE/COUNTY-  MD/ST MARYS
 HV6518  COUNTRY     -  US
 HV6518  USGS QUAD   -  POINT LOOKOUT (2016)
 HV6518
 HV6518                         *CURRENT SURVEY CONTROL
 HV6518  ______________________________________________________________________
 HV6518* NAD 83(1993) POSITION- 38 04 20.65650(N) 076 22 08.24762(W)   ADJUSTED
 HV6518* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6518  ______________________________________________________________________
 HV6518  GEOID HEIGHT    -        -35.129 (meters)                     GEOID18
 HV6518  LAPLACE CORR    -         -6.17  (seconds)                    DEFLEC18
 HV6518  HORZ ORDER      -  SECOND
 HV6518
 HV6518.The horizontal coordinates were established by classical geodetic methods
 HV6518.and adjusted by the National Geodetic Survey in November 1994.
 HV6518
 HV6518.The orthometric height was scaled from a topographic map.
 HV6518
 HV6518.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6518.GEOID18 height accuracy estimate available here.
 HV6518
 HV6518.Click photographs - Photos may exist for this station.
 HV6518
 HV6518.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6518
 HV6518. The following values were computed from the NAD 83(1993) position.
 HV6518
 HV6518;                    North         East     Units Scale Factor Converg.
 HV6518;SPC MD       -    45,230.586   455,373.644   MT  1.00004738   +0 23 45.8
 HV6518;SPC MD       -   148,394.01  1,494,005.03   sFT  1.00004738   +0 23 45.8
 HV6518;SPC VA S     - 1,195,112.799 3,686,978.561   MT  1.00002101   +1 17 36.2
 HV6518;SPC VA S     - 3,920,965.91 12,096,362.16   sFT  1.00002101   +1 17 36.2
 HV6518;UTM  18      - 4,214,733.178   379,924.677   MT  0.99977757   -0 50 39.4
 HV6518
 HV6518!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6518!SPC MD       -   1.00000556  x   1.00004738  =   1.00005294
 HV6518!SPC VA S     -   1.00000556  x   1.00002101  =   1.00002657
 HV6518!UTM  18      -   1.00000556  x   0.99977757  =   0.99978313
 HV6518
 HV6518_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7992414733(NAD 83)
 HV6518
 HV6518                          SUPERSEDED SURVEY CONTROL
 HV6518
 HV6518  NAD 83(1991)-  38 04 20.65547(N)    076 22 08.24996(W) AD(       ) 2
 HV6518  NAD 83(1986)-  38 04 20.65723(N)    076 22 08.26441(W) AD(       ) 2
 HV6518  NAD 27      -  38 04 20.20600(N)    076 22 09.44600(W) AD(       ) 2
 HV6518  USSD        -  38 04 20.58700(N)    076 22 09.17300(W) AD(       ) 3
 HV6518
 HV6518.Superseded values are not recommended for survey control.
 HV6518
 HV6518.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6518.See file dsdata.pdf to determine how the superseded data were derived.
 HV6518
 HV6518_MARKER: DS = TRIANGULATION STATION DISK
 HV6518_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6518_MARK LOGO: CGS
 HV6518_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6518
 HV6518  HISTORY     - Date     Condition        Report By
 HV6518  HISTORY     - 1919     MONUMENTED       CGS
 HV6518
 HV6518                          STATION DESCRIPTION
 HV6518
 HV6518'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6518'STATION IS ON THE EASTERN SIDE OF POTOMAC RIVER, ABOUT 3 MILES
 HV6518'ABOVE POINT LOOKOUT, ON LEVEL GROUND IN THE EDGE OF THE WOODS,
 HV6518'ABOUT 1 MILE NW OF THE HALL HOUSE, AND ABOUT 500 METERS S OF
 HV6518'FRANK SMITHS HOUSE.  IT IS ABOUT 85 METERS S OF ENTRANCE OF
 HV6518'POTTER CREEK, 19 METERS S OF EDGE OF MARSH AND 9 METERS FROM
 HV6518'EDGE OF BANK 3 FEET HIGH ALONG SHORE.  A CUT THROUGH THE
 HV6518'UNDERGROWTH AND SCRUB TREES MARKS THE LOCATION.
 HV6518'
 HV6518'STATION IS MARKED BY A BRONZE TABLET, STAMPED FRONT RANGE
 HV6518'16,000, IN CONCRETE IN A TILE SURROUNDED BY A MASS OF
 HV6518'CONCRETE.  STATION 16,000 YARD FRONT RANGE TRIAL IS 36.72 METERS
 HV6518'(120.5 FEET) NNW FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6516 ***********************************************************************
 HV6516  DESIGNATION -  16000 YARD REAR RANGE
 HV6516  PID         -  HV6516
 HV6516  STATE/COUNTY-  MD/ST MARYS
 HV6516  COUNTRY     -  US
 HV6516  USGS QUAD   -  POINT LOOKOUT (2016)
 HV6516
 HV6516                         *CURRENT SURVEY CONTROL
 HV6516  ______________________________________________________________________
 HV6516* NAD 83(1993) POSITION- 38 04 36.90911(N) 076 21 56.90231(W)   ADJUSTED
 HV6516* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6516  ______________________________________________________________________
 HV6516  GEOID HEIGHT    -        -35.133 (meters)                     GEOID18
 HV6516  LAPLACE CORR    -         -6.15  (seconds)                    DEFLEC18
 HV6516  HORZ ORDER      -  THIRD
 HV6516
 HV6516.The horizontal coordinates were established by classical geodetic methods
 HV6516.and adjusted by the National Geodetic Survey in November 1994.
 HV6516
 HV6516.The orthometric height was scaled from a topographic map.
 HV6516
 HV6516.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6516.GEOID18 height accuracy estimate available here.
 HV6516
 HV6516.Click photographs - Photos may exist for this station.
 HV6516
 HV6516.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6516
 HV6516. The following values were computed from the NAD 83(1993) position.
 HV6516
 HV6516;                    North         East     Units Scale Factor Converg.
 HV6516;SPC MD       -    45,733.627   455,646.699   MT  1.00004629   +0 23 53.0
 HV6516;SPC MD       -   150,044.41  1,494,900.88   sFT  1.00004629   +0 23 53.0
 HV6516;SPC VA S     - 1,195,620.041 3,687,243.697   MT  1.00002198   +1 17 43.1
 HV6516;SPC VA S     - 3,922,630.08 12,097,232.03   sFT  1.00002198   +1 17 43.1
 HV6516;UTM  18      - 4,215,230.056   380,208.480   MT  0.99977674   -0 50 32.7
 HV6516
 HV6516!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6516!SPC MD       -   1.00000540  x   1.00004629  =   1.00005169
 HV6516!SPC VA S     -   1.00000540  x   1.00002198  =   1.00002738
 HV6516!UTM  18      -   1.00000540  x   0.99977674  =   0.99978214
 HV6516
 HV6516_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8020815230(NAD 83)
 HV6516
 HV6516                          SUPERSEDED SURVEY CONTROL
 HV6516
 HV6516  NAD 83(1991)-  38 04 36.90816(N)    076 21 56.90463(W) AD(       ) 3
 HV6516  NAD 83(1986)-  38 04 36.90985(N)    076 21 56.91912(W) AD(       ) 3
 HV6516  NAD 27      -  38 04 36.44800(N)    076 21 58.05600(W) AD(       ) 3
 HV6516  USSD        -  38 04 36.82800(N)    076 21 57.79100(W) AD(       ) 3
 HV6516
 HV6516.Superseded values are not recommended for survey control.
 HV6516
 HV6516.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6516.See file dsdata.pdf to determine how the superseded data were derived.
 HV6516
 HV6516_MARKER: DS = TRIANGULATION STATION DISK
 HV6516_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6516_MARK LOGO: CGS
 HV6516_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6516
 HV6516  HISTORY     - Date     Condition        Report By
 HV6516  HISTORY     - 1919     MONUMENTED       CGS
 HV6516  HISTORY     - 1952     GOOD             CGS
 HV6516  HISTORY     - 1954     GOOD             CGS
 HV6516  HISTORY     - 1955     MARK NOT FOUND   CGS
 HV6516  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6516
 HV6516                          STATION DESCRIPTION
 HV6516
 HV6516'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6516'STATION IS ON N SIDE OF POTTER CREEK, ON FRANK SMITHS PLACE,
 HV6516'450 METERS E OF AN OLD HOUSE, IN AN OLD PASTURE, 10 METERS (33
 HV6516'FEET) N OF N FENCE LINE, A PRIVATE ROAD RUNNING E FROM HOUSE,
 HV6516'11.2 METERS (37 FEET) W OF THE W FENCE LINE OF THIS SAME ROAD
 HV6516'AFTER IT TURNS N TO A BARN, AND 17 METERS (56 FEET) FROM GATE
 HV6516'AT CORNER WHERE ROAD TURNS.
 HV6516'
 HV6516'STATION AND REFERENCE MARKS ARE BRONZE TABLETS SET IN CONCRETE
 HV6516'IN TILES SURROUNDED BY MASSES OF CONCRETE.
 HV6516'
 HV6516'THE REFERENCE MARK IS IN THE CORNER OF THE ROAD, ABOUT 2 METERS
 HV6516'W AND 2 METERS N OF THE GATE.  AND 15.34 METERS (50.3 FEET)
 HV6516'FROM STATION IN BEARING S 35 DEG E (MAGNETIC).
 HV6516
 HV6516                          STATION RECOVERY (1952)
 HV6516
 HV6516'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (EHK)
 HV6516'THE STATION AND REFERENCE MARK 1 WERE RECOVERED AS DESCRIBED
 HV6516'AND FOUND IN GOOD CONDITION.
 HV6516
 HV6516                          STATION RECOVERY (1954)
 HV6516
 HV6516'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (RJF)
 HV6516'STATION AND REFERENCE MARK RECOVERED AS DESCRIBED AND IN GOOD
 HV6516'CONDITION.
 HV6516
 HV6516                          STATION RECOVERY (1955)
 HV6516
 HV6516'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (KSU)
 HV6516'STATION DESTROYED BY CULTIVATION OF THE FIELD IN WHICH IT WAS
 HV6516'LOCATED.  THE REFERENCE MARK WAS FOUND AS DESCRIBED LEANING TO
 HV6516'THE NW.  RECOMMEND THE STATION BE CONSIDERED LOST.
 HV6516
 HV6516                          STATION RECOVERY (1960)
 HV6516
 HV6516'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6516'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  THE OWNER OF THE
 HV6516'PROPERTY STATED THAT THE STATION MARK WAS DESTROYED ABOUT FIVE
 HV6516'YEARS AGO DURING CULTIVATION OF THE FIELD.  THE REFERENCE MARK
 HV6516'COULD NOT BE FOUND AND IS BELIEVED TO HAVE ALSO BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2699 ***********************************************************************
 JV2699  DESIGNATION -  1605
 JV2699  PID         -  JV2699
 JV2699  STATE/COUNTY-  MD/MONTGOMERY
 JV2699  COUNTRY     -  US
 JV2699  USGS QUAD   -  ROCKVILLE (2016)
 JV2699
 JV2699                         *CURRENT SURVEY CONTROL
 JV2699  ______________________________________________________________________
 JV2699* NAD 83(1986) POSITION- 39 04 54.     (N) 077 08 53.     (W)   SCALED
 JV2699* NAVD 88 ORTHO HEIGHT -   130.78  (+/-2cm)      429.1   (feet) VERTCON3
 JV2699  ______________________________________________________________________
 JV2699  GEOID HEIGHT    -        -31.729 (meters)                     GEOID18
 JV2699  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2699
 JV2699.The horizontal coordinates were scaled from a map and have
 JV2699.an estimated accuracy of +/- 6 seconds.
 JV2699
 JV2699.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2699.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2699
 JV2699.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2699.GEOID18 height accuracy estimate available here.
 JV2699
 JV2699.The vertical order pertains to the NGVD 29 superseded value.
 JV2699
 JV2699.Click photographs - Photos may exist for this station.
 JV2699
 JV2699;                    North         East    Units  Estimated Accuracy
 JV2699;SPC MD       -   157,080.      387,190.      MT  (+/- 180 meters Scaled)
 JV2699
 JV2699_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ142280(NAD 83)
 JV2699
 JV2699                          SUPERSEDED SURVEY CONTROL
 JV2699
 JV2699  NGVD 29 (11/26/84)  130.996  (m)          429.78   (f) ADJUSTED    2 0
 JV2699
 JV2699.Superseded values are not recommended for survey control.
 JV2699
 JV2699.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2699.See file dsdata.pdf to determine how the superseded data were derived.
 JV2699
 JV2699_MARKER: DD = SURVEY DISK
 JV2699_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2699_SP_SET: CONCRETE WALK
 JV2699_STAMPING: 1605
 JV2699_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2699
 JV2699  HISTORY     - Date     Condition        Report By
 JV2699  HISTORY     - UNK      MONUMENTED       WSSC
 JV2699  HISTORY     - 1939     GOOD             WSSC
 JV2699  HISTORY     - 20020125 MARK NOT FOUND   MDSHA
 JV2699
 JV2699                          STATION DESCRIPTION
 JV2699
 JV2699'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2699'AT ROCKVILLE.
 JV2699'AT ROCKVILLE HIGH SCHOOL, IN THE EAST WALL, 7 FEET SOUTH OF THE
 JV2699'STEPS AT THE ENTRANCE, AND 1.5 FEET ABOVE THE CONCRETE WALK.
 JV2699
 JV2699                          STATION RECOVERY (2002)
 JV2699
 JV2699'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV2699'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0679 ***********************************************************************
 HV0679  DESIGNATION -  161.0
 HV0679  PID         -  HV0679
 HV0679  STATE/COUNTY-  MD/ST MARYS
 HV0679  COUNTRY     -  US
 HV0679  USGS QUAD   -  MECHANICSVILLE (2016)
 HV0679
 HV0679                         *CURRENT SURVEY CONTROL
 HV0679  ______________________________________________________________________
 HV0679* NAD 83(1986) POSITION- 38 25 44.     (N) 076 43 25.     (W)   SCALED
 HV0679* NAVD 88 ORTHO HEIGHT -    48.789 (meters)      160.07  (feet) ADJUSTED
 HV0679  ______________________________________________________________________
 HV0679  GEOID HEIGHT    -        -33.696 (meters)                     GEOID18
 HV0679  DYNAMIC HEIGHT  -         48.759 (meters)      159.97  (feet) COMP
 HV0679  MODELED GRAVITY -    980,020.8   (mgal)                       NAVD 88
 HV0679
 HV0679  VERT ORDER      -  FIRST     CLASS II
 HV0679
 HV0679.The horizontal coordinates were scaled from a map and have
 HV0679.an estimated accuracy of +/- 6 seconds.
 HV0679
 HV0679.The orthometric height was determined by differential leveling and
 HV0679.adjusted by the NATIONAL GEODETIC SURVEY
 HV0679.in June 1991.
 HV0679
 HV0679.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0679.GEOID18 height accuracy estimate available here.
 HV0679
 HV0679.Click photographs - Photos may exist for this station.
 HV0679
 HV0679.The dynamic height is computed by dividing the NAVD 88
 HV0679.geopotential number by the normal gravity value computed on the
 HV0679.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0679.degrees latitude (g = 980.6199 gals.).
 HV0679
 HV0679.The modeled gravity was interpolated from observed gravity values.
 HV0679
 HV0679;                    North         East    Units  Estimated Accuracy
 HV0679;SPC MD       -    84,650.      424,130.      MT  (+/- 180 meters Scaled)
 HV0679
 HV0679_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH495548(NAD 83)
 HV0679
 HV0679                          SUPERSEDED SURVEY CONTROL
 HV0679
 HV0679  NGVD 29 (11/26/84)   49.054  (m)          160.94   (f) ADJUSTED    1 2
 HV0679
 HV0679.Superseded values are not recommended for survey control.
 HV0679
 HV0679.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0679.See file dsdata.pdf to determine how the superseded data were derived.
 HV0679
 HV0679_MARKER: Q = CHISELED SQUARE
 HV0679_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0679_SP_SET: CULVERT
 HV0679_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0679
 HV0679  HISTORY     - Date     Condition        Report By
 HV0679  HISTORY     - UNK      MONUMENTED       USGS
 HV0679  HISTORY     - 1941     GOOD             CGS
 HV0679  HISTORY     - 20020423 MARK NOT FOUND   MDDNR
 HV0679
 HV0679                          STATION DESCRIPTION
 HV0679
 HV0679'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0679'1.5 MI SE FROM MECHANICSVILLE.
 HV0679'ABOUT 1.5 MILES SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0679'OFFICE AT MECHANICSVILLE, SAINT MARYS COUNTY, 42 FEET NORTHWEST
 HV0679'OF THE FOURTH POLE EAST OF THE JUNCTION OF A ROAD LEADING SOUTH,
 HV0679'AT AN 18-INCH CONCRETE CULVERT, ON THE CENTER OF THE TOP OF THE WEST
 HV0679'HEAD WALL, AND 15 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY.
 HV0679'A CHISELED SQUARE, MARKED 161.0.
 HV0679
 HV0679                          STATION RECOVERY (2002)
 HV0679
 HV0679'RECOVERY NOTE BY MD DEPT OF NAT RES 2002 (DDD)
 HV0679'THE CULVERT APPEARS TO HAVE BEEN REPLACED AROUND 1996
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2166 ***********************************************************************
 JV2166  DESIGNATION -  1611 WSSC
 JV2166  PID         -  JV2166
 JV2166  STATE/COUNTY-  MD/MONTGOMERY
 JV2166  COUNTRY     -  US
 JV2166  USGS QUAD   -  KENSINGTON (2016)
 JV2166
 JV2166                         *CURRENT SURVEY CONTROL
 JV2166  ______________________________________________________________________
 JV2166* NAD 83(1986) POSITION- 39 01 44.     (N) 077 04 33.     (W)   SCALED
 JV2166* NAVD 88 ORTHO HEIGHT -    93.048 (meters)      305.27  (feet) ADJUSTED
 JV2166  ______________________________________________________________________
 JV2166  GEOID HEIGHT    -        -31.873 (meters)                     GEOID18
 JV2166  DYNAMIC HEIGHT  -         92.998 (meters)      305.11  (feet) COMP
 JV2166  MODELED GRAVITY -    980,089.9   (mgal)                       NAVD 88
 JV2166
 JV2166  VERT ORDER      -  SECOND    CLASS 0
 JV2166
 JV2166.The horizontal coordinates were scaled from a map and have
 JV2166.an estimated accuracy of +/- 6 seconds.
 JV2166
 JV2166.The orthometric height was determined by differential leveling and
 JV2166.adjusted by the NATIONAL GEODETIC SURVEY
 JV2166.in June 1991.
 JV2166
 JV2166.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2166.GEOID18 height accuracy estimate available here.
 JV2166
 JV2166.Click photographs - Photos may exist for this station.
 JV2166
 JV2166.The dynamic height is computed by dividing the NAVD 88
 JV2166.geopotential number by the normal gravity value computed on the
 JV2166.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2166.degrees latitude (g = 980.6199 gals.).
 JV2166
 JV2166.The modeled gravity was interpolated from observed gravity values.
 JV2166
 JV2166;                    North         East    Units  Estimated Accuracy
 JV2166;SPC MD       -   151,220.      393,430.      MT  (+/- 180 meters Scaled)
 JV2166
 JV2166_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ203220(NAD 83)
 JV2166
 JV2166                          SUPERSEDED SURVEY CONTROL
 JV2166
 JV2166  NGVD 29 (11/26/84)   93.267  (m)          305.99   (f) ADJUSTED    2 0
 JV2166
 JV2166.Superseded values are not recommended for survey control.
 JV2166
 JV2166.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2166.See file dsdata.pdf to determine how the superseded data were derived.
 JV2166
 JV2166_MARKER: Z = SEE DESCRIPTION
 JV2166_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2166_SP_SET: PIER
 JV2166_STAMPING: WSSC 1611
 JV2166_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2166
 JV2166  HISTORY     - Date     Condition        Report By
 JV2166  HISTORY     - UNK      MONUMENTED       WSSC
 JV2166  HISTORY     - 1951     GOOD             CGS
 JV2166  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2166
 JV2166                          STATION DESCRIPTION
 JV2166
 JV2166'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2166'0.3 MI NW FROM KENSINGTON.
 JV2166'ABOUT 0.3 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2166'FROM THE STATION AT KENSINGTON, MONTGOMERY COUNTY, AT THE OVERHEAD
 JV2166'CROSSING OF STATE HIGHWAY 193, ON THE SOUTHEAST END OF THE F
 JV2166'FOOTING OF THE SOUTHWEST PIER, AND ABOUT 5 FEET HIGHER THAN THE
 JV2166'TRACK.  A WASHINGTON SURBURBAN SANITARY DISTRICT STANDARD LAG
 JV2166'SCREW AND WASHER, STAMPED WSSC 1611.
 JV2166
 JV2166                          STATION RECOVERY (1987)
 JV2166
 JV2166'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2166'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1214 ***********************************************************************
 HV1214  DESIGNATION -  1620 WSSC
 HV1214  PID         -  HV1214
 HV1214  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1214  COUNTRY     -  US
 HV1214  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1214
 HV1214                         *CURRENT SURVEY CONTROL
 HV1214  ______________________________________________________________________
 HV1214* NAD 83(1986) POSITION- 38 53 15.     (N) 076 53 05.     (W)   SCALED
 HV1214* NAVD 88 ORTHO HEIGHT -    56.16  (+/-2cm)      184.3   (feet) VERTCON3
 HV1214  ______________________________________________________________________
 HV1214  GEOID HEIGHT    -        -32.397 (meters)                     GEOID18
 HV1214  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1214
 HV1214.The horizontal coordinates were scaled from a map and have
 HV1214.an estimated accuracy of +/- 6 seconds.
 HV1214
 HV1214.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1214.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1214
 HV1214.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1214.GEOID18 height accuracy estimate available here.
 HV1214
 HV1214.The vertical order pertains to the NGVD 29 superseded value.
 HV1214
 HV1214.Click photographs - Photos may exist for this station.
 HV1214
 HV1214;                    North         East    Units  Estimated Accuracy
 HV1214;SPC MD       -   135,520.      410,000.      MT  (+/- 180 meters Scaled)
 HV1214
 HV1214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ365059(NAD 83)
 HV1214
 HV1214                          SUPERSEDED SURVEY CONTROL
 HV1214
 HV1214  NGVD 29 (11/26/84)   56.406  (m)          185.06   (f) ADJUSTED    2 0
 HV1214
 HV1214.Superseded values are not recommended for survey control.
 HV1214
 HV1214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1214.See file dsdata.pdf to determine how the superseded data were derived.
 HV1214
 HV1214_MARKER: DD = SURVEY DISK
 HV1214_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1214_STAMPING: 1620
 HV1214_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1214
 HV1214  HISTORY     - Date     Condition        Report By
 HV1214  HISTORY     - UNK      MONUMENTED       WSSC
 HV1214  HISTORY     - 1944     GOOD             WSSC
 HV1214  HISTORY     - 1978     MARK NOT FOUND   NGS
 HV1214
 HV1214                          STATION DESCRIPTION
 HV1214
 HV1214'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1214'1 MI E FROM SEAT PLEASANT.
 HV1214'ON CENTRAL AVENUE, 0.3 MILE WEST OF THE JUNCTION OF WALKERS MILL
 HV1214'ROAD, 0.15 MILE EAST OF A ROAD LEADING TO BROOKS STATION ON THE
 HV1214'OLD CHESAPEAKE BEACH RAILROAD, ON THE NORTH SIDE OF THE ROAD,
 HV1214'64 FEET NORTH ACROSS THE ROAD FROM THE END OF A GUARDRAIL,
 HV1214'NEAR A HOUSE, 47.4 FEET EAST OF THE SOUTHEAST CORNER OF THE PORCH,
 HV1214'26.7 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE HOUSE, AND
 HV1214'JUST EAST OF THE YARD FENCE.
 HV1214
 HV1214                          STATION RECOVERY (1978)
 HV1214
 HV1214'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
 HV1214'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2316 ***********************************************************************
 HV2316  DESIGNATION -  1622
 HV2316  PID         -  HV2316
 HV2316  STATE/COUNTY-  MD/MONTGOMERY
 HV2316  COUNTRY     -  US
 HV2316  USGS QUAD   -  FALLS CHURCH (2019)
 HV2316
 HV2316                         *CURRENT SURVEY CONTROL
 HV2316  ______________________________________________________________________
 HV2316* NAD 83(1986) POSITION- 38 58 29.     (N) 077 09 43.     (W)   SCALED
 HV2316* NAVD 88 ORTHO HEIGHT -    48.027 (meters)      157.57  (feet) ADJUSTED
 HV2316  ______________________________________________________________________
 HV2316  GEOID HEIGHT    -        -31.811 (meters)                     GEOID18
 HV2316  DYNAMIC HEIGHT  -         48.001 (meters)      157.48  (feet) COMP
 HV2316  MODELED GRAVITY -    980,095.7   (mgal)                       NAVD 88
 HV2316
 HV2316  VERT ORDER      -  SECOND    CLASS 0
 HV2316
 HV2316.The horizontal coordinates were scaled from a map and have
 HV2316.an estimated accuracy of +/- 6 seconds.
 HV2316
 HV2316.The orthometric height was determined by differential leveling and
 HV2316.adjusted by the NATIONAL GEODETIC SURVEY
 HV2316.in June 1991.
 HV2316
 HV2316.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2316.GEOID18 height accuracy estimate available here.
 HV2316
 HV2316.Click photographs - Photos may exist for this station.
 HV2316
 HV2316.The dynamic height is computed by dividing the NAVD 88
 HV2316.geopotential number by the normal gravity value computed on the
 HV2316.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2316.degrees latitude (g = 980.6199 gals.).
 HV2316
 HV2316.The modeled gravity was interpolated from observed gravity values.
 HV2316
 HV2316;                    North         East    Units  Estimated Accuracy
 HV2316;SPC MD       -   145,210.      385,970.      MT  (+/- 180 meters Scaled)
 HV2316
 HV2316_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ127161(NAD 83)
 HV2316
 HV2316                          SUPERSEDED SURVEY CONTROL
 HV2316
 HV2316  NGVD 29 (11/26/84)   48.265  (m)          158.35   (f) ADJUSTED    2 0
 HV2316
 HV2316.Superseded values are not recommended for survey control.
 HV2316
 HV2316.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2316.See file dsdata.pdf to determine how the superseded data were derived.
 HV2316
 HV2316_MARKER: DD = SURVEY DISK
 HV2316_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2316_SP_SET: BUILDING
 HV2316_STAMPING: 1622
 HV2316_MARK LOGO: WSSC
 HV2316_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2316
 HV2316  HISTORY     - Date     Condition        Report By
 HV2316  HISTORY     - UNK      MONUMENTED       WSSC
 HV2316  HISTORY     - 1960     GOOD             CGS
 HV2316
 HV2316                          STATION DESCRIPTION
 HV2316
 HV2316'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 HV2316'AT CABIN JOHN.
 HV2316'AT CABIN JOHN, SET VERTICALLY IN THE SOUTH BRICK FACE AND AT THE
 HV2316'SOUTHEAST CORNER OF THE CABIN JOHN FIRE STATION, 1.8 FEET WEST OF
 HV2316'THE SOUTHEAST CORNER OF THE BUILDING, AND 1.2 FEET ABOVE THE
 HV2316'LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1433 ***********************************************************************
 HV1433  DESIGNATION -  1624 WSSC
 HV1433  PID         -  HV1433
 HV1433  STATE/COUNTY-  MD/MONTGOMERY
 HV1433  COUNTRY     -  US
 HV1433  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1433
 HV1433                         *CURRENT SURVEY CONTROL
 HV1433  ______________________________________________________________________
 HV1433* NAD 83(1986) POSITION- 38 59 05.     (N) 076 59 55.     (W)   SCALED
 HV1433* NAVD 88 ORTHO HEIGHT -    64.37  (+/-2cm)      211.2   (feet) VERTCON3
 HV1433  ______________________________________________________________________
 HV1433  GEOID HEIGHT    -        -32.021 (meters)                     GEOID18
 HV1433  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1433
 HV1433.The horizontal coordinates were scaled from a map and have
 HV1433.an estimated accuracy of +/- 6 seconds.
 HV1433
 HV1433.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1433.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1433
 HV1433.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1433.GEOID18 height accuracy estimate available here.
 HV1433
 HV1433.The vertical order pertains to the NGVD 29 superseded value.
 HV1433
 HV1433.Click photographs - Photos may exist for this station.
 HV1433
 HV1433;                    North         East    Units  Estimated Accuracy
 HV1433;SPC MD       -   146,310.      400,120.      MT  (+/- 180 meters Scaled)
 HV1433
 HV1433_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ268169(NAD 83)
 HV1433
 HV1433                          SUPERSEDED SURVEY CONTROL
 HV1433
 HV1433  NGVD 29 (11/26/84)   64.582  (m)          211.88   (f) ADJUSTED    2 0
 HV1433
 HV1433.Superseded values are not recommended for survey control.
 HV1433
 HV1433.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1433.See file dsdata.pdf to determine how the superseded data were derived.
 HV1433
 HV1433_MARKER: DD = SURVEY DISK
 HV1433_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1433_STAMPING: 1624
 HV1433_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1433
 HV1433  HISTORY     - Date     Condition        Report By
 HV1433  HISTORY     - UNK      MONUMENTED       WSSC
 HV1433  HISTORY     - 1952     GOOD             CGS
 HV1433
 HV1433                          STATION DESCRIPTION
 HV1433
 HV1433'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV1433'AT TAKOMA PARK.
 HV1433'AT TAKOMA PARK, MONTGOMERY COUNTY, AT THE INTERSECTION OF CARROLL
 HV1433'AVENUE AND FLOWER AVENUE, ON THE SANITARIUM GROUNDS IN THE WEST
 HV1433'ANGLE OF THE INTERSECTION, 3.27 FEET FROM THE CORNER AT THE
 HV1433'NORTHWEST END OF THE WALL ALONG FLOWER AVENUE, 11.70 FEET FROM THE
 HV1433'EDGE OF THE WALK LEADING ACROSS THE GROUNDS, AND 25-1/2 FEET
 HV1433'SOUTHEAST OF A 14-INCH OAK.  A WASHINGTON SUBURBAN SANITARY
 HV1433'DISTRICT BRONZE DISK, STAMPED 1624 AND FASTENED TO THE TOP OF AN
 HV1433'IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1208 ***********************************************************************
 HV1208  DESIGNATION -  1626 WSSC
 HV1208  PID         -  HV1208
 HV1208  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1208  COUNTRY     -  US
 HV1208  USGS QUAD   -  LANHAM (2016)
 HV1208
 HV1208                         *CURRENT SURVEY CONTROL
 HV1208  ______________________________________________________________________
 HV1208* NAD 83(1986) POSITION- 38 53 27.     (N) 076 51 05.     (W)   SCALED
 HV1208* NAVD 88 ORTHO HEIGHT -    35.876 (meters)      117.70  (feet) ADJUSTED
 HV1208  ______________________________________________________________________
 HV1208  GEOID HEIGHT    -        -32.482 (meters)                     GEOID18
 HV1208  DYNAMIC HEIGHT  -         35.856 (meters)      117.64  (feet) COMP
 HV1208  MODELED GRAVITY -    980,079.8   (mgal)                       NAVD 88
 HV1208
 HV1208  VERT ORDER      -  SECOND    CLASS 0
 HV1208
 HV1208.The horizontal coordinates were scaled from a map and have
 HV1208.an estimated accuracy of +/- 6 seconds.
 HV1208
 HV1208.The orthometric height was determined by differential leveling and
 HV1208.adjusted by the NATIONAL GEODETIC SURVEY
 HV1208.in June 1991.
 HV1208
 HV1208.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1208.GEOID18 height accuracy estimate available here.
 HV1208
 HV1208.Click photographs - Photos may exist for this station.
 HV1208
 HV1208.The dynamic height is computed by dividing the NAVD 88
 HV1208.geopotential number by the normal gravity value computed on the
 HV1208.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1208.degrees latitude (g = 980.6199 gals.).
 HV1208
 HV1208.The modeled gravity was interpolated from observed gravity values.
 HV1208
 HV1208;                    North         East    Units  Estimated Accuracy
 HV1208;SPC MD       -   135,900.      412,890.      MT  (+/- 180 meters Scaled)
 HV1208
 HV1208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ394062(NAD 83)
 HV1208
 HV1208                          SUPERSEDED SURVEY CONTROL
 HV1208
 HV1208  NGVD 29 (11/26/84)   36.119  (m)          118.50   (f) ADJUSTED    2 0
 HV1208
 HV1208.Superseded values are not recommended for survey control.
 HV1208
 HV1208.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1208.See file dsdata.pdf to determine how the superseded data were derived.
 HV1208
 HV1208_MARKER: DD = SURVEY DISK
 HV1208_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1208_SP_SET: BRIDGE
 HV1208_STAMPING: 1626
 HV1208_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1208
 HV1208  HISTORY     - Date     Condition        Report By
 HV1208  HISTORY     - UNK      MONUMENTED       WSSC
 HV1208  HISTORY     - 1958     GOOD             CGS
 HV1208
 HV1208                          STATION DESCRIPTION
 HV1208
 HV1208'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1208'1.3 MI W FROM LARGO.
 HV1208'ABOUT 1.3 MILES WEST ALONG STATE HIGHWAY 214 (CENTRAL AVENUE)
 HV1208'FROM THE INTERSECTION OF STATE HIGHWAY 202 AT LARGO, NEAR THE
 HV1208'INTERSECTION OF BRIGHTSEAT ROAD LEADING NORTH, ON THE TOP OF THE
 HV1208'NORTHEAST CONCRETE WING WALL OF A BRIDGE OVER A SMALL STREAM,
 HV1208'17.2 FEET NORTH OF THE CENTER LINE OF THE AVENUE, 91 YARDS
 HV1208'WEST OF THE CENTER LINE OF BRIGHTSEAT ROAD, AND ABOUT 3 1/2 FEET
 HV1208'LOWER THAN THE AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2341 ***********************************************************************
 HV2341  DESIGNATION -  1629 WSSC
 HV2341  PID         -  HV2341
 HV2341  STATE/COUNTY-  MD/MONTGOMERY
 HV2341  COUNTRY     -  US
 HV2341  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2341
 HV2341                         *CURRENT SURVEY CONTROL
 HV2341  ______________________________________________________________________
 HV2341* NAD 83(1986) POSITION- 38 58 49.95   (N) 077 00 59.85   (W)   HD_HELD1
 HV2341* NAVD 88 ORTHO HEIGHT -    77.421 (meters)      254.01  (feet) ADJUSTED
 HV2341  ______________________________________________________________________
 HV2341  GEOID HEIGHT    -        -31.995 (meters)                     GEOID18
 HV2341  DYNAMIC HEIGHT  -         77.379 (meters)      253.87  (feet) COMP
 HV2341  MODELED GRAVITY -    980,090.5   (mgal)                       NAVD 88
 HV2341
 HV2341  VERT ORDER      -  SECOND    CLASS 0
 HV2341
 HV2341.The horizontal coordinates were determined by differentially corrected
 HV2341.hand held GPS observations or other comparable positioning techniques
 HV2341.and have an estimated accuracy of +/- 3 meters.
 HV2341
 HV2341.The orthometric height was determined by differential leveling and
 HV2341.adjusted by the NATIONAL GEODETIC SURVEY
 HV2341.in June 1991.
 HV2341
 HV2341.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2341.GEOID18 height accuracy estimate available here.
 HV2341
 HV2341.Click photographs - Photos may exist for this station.
 HV2341
 HV2341.The dynamic height is computed by dividing the NAVD 88
 HV2341.geopotential number by the normal gravity value computed on the
 HV2341.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2341.degrees latitude (g = 980.6199 gals.).
 HV2341
 HV2341.The modeled gravity was interpolated from observed gravity values.
 HV2341
 HV2341;                    North         East    Units  Estimated Accuracy
 HV2341;SPC MD       -   145,846.3     398,559.5     MT  (+/- 3 meters HH1 GPS) 
 HV2341
 HV2341_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2532116551(NAD 83)
 HV2341
 HV2341                          SUPERSEDED SURVEY CONTROL
 HV2341
 HV2341  NGVD 29 (11/26/84)   77.635  (m)          254.71   (f) ADJUSTED    2 0
 HV2341
 HV2341.Superseded values are not recommended for survey control.
 HV2341
 HV2341.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2341.See file dsdata.pdf to determine how the superseded data were derived.
 HV2341
 HV2341_MARKER: DD = SURVEY DISK
 HV2341_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2341_SP_SET: BRIDGE WALL
 HV2341_STAMPING: 1629
 HV2341_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2341_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2341+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2004
 HV2341
 HV2341  HISTORY     - Date     Condition        Report By
 HV2341  HISTORY     - UNK      MONUMENTED       WSSC
 HV2341  HISTORY     - 1951     GOOD             CGS
 HV2341  HISTORY     - 20040320 GOOD             GEOCAC
 HV2341
 HV2341                          STATION DESCRIPTION
 HV2341
 HV2341'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2341'AT TAKOMA PARK.
 HV2341'AT TAKOMA PARK, MONTGOMERY COUNTY, 0.2 MILE NORTHEAST ALONG PINEY
 HV2341'BRANCH ROAD FROM THE DISTRICT LINE, ON THE SOUTHEAST SIDE OF
 HV2341'PINEY BRANCH ROAD, ABOUT 20 FEET SOUTH OF A SMALL STREAM, AND
 HV2341'ON A LEDGE OUTSIDE THE PARAPET WALL OR RAILING OF A CONCRETE
 HV2341'BRIDGE.  A WASHINGTON SUBURBAN SANITARY DISTRICY BRONZE DISK,
 HV2341'STAMPED 1629.
 HV2341
 HV2341                          STATION RECOVERY (2004)
 HV2341
 HV2341'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV2341'STATION LOCATED ON THE CONCRETE BASE OUTSIDE OF THE RAILING IN THE
 HV2341'FIFTH SECTION FROM THE SOUTHWEST END OF THE BRIDGE, AND APPROXIMATELY
 HV2341'36 FEET SOUTH OF PEPCO POLE ..417-1878 (FIRST DIGITS COVERED OVER).
 HV2341'THE DISK IS LOCATED DIRECTLY ACROSS THE STREET FROM AND ABOUT 25 FEET
 HV2341'SOUTHEAST OF A FIRE HYDRANT. THE BRIDGE IS STRUCTURE 15197R0.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7492 ***********************************************************************
 HV7492  DESIGNATION -  16291 WSSC 1970
 HV7492  PID         -  HV7492
 HV7492  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7492  COUNTRY     -  US
 HV7492  USGS QUAD   -  LANHAM (2016)
 HV7492
 HV7492                         *CURRENT SURVEY CONTROL
 HV7492  ______________________________________________________________________
 HV7492* NAD 83(1991) POSITION- 38 59 26.75132(N) 076 50 55.36183(W)   ADJUSTED
 HV7492* NAVD 88 ORTHO HEIGHT -    63.4   (meters)      208.    (feet) VERTCON3
 HV7492  ______________________________________________________________________
 HV7492  GEOID HEIGHT    -        -32.351 (meters)                     GEOID18
 HV7492  LAPLACE CORR    -         -5.31  (seconds)                    DEFLEC18
 HV7492  HORZ ORDER      -  SECOND
 HV7492
 HV7492.The horizontal coordinates were established by classical geodetic methods
 HV7492.and adjusted by the National Geodetic Survey in January 1992.
 HV7492
 HV7492.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7492.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7492
 HV7492.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7492.GEOID18 height accuracy estimate available here.
 HV7492
 HV7492.Click photographs - Photos may exist for this station.
 HV7492
 HV7492.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7492
 HV7492. The following values were computed from the NAD 83(1991) position.
 HV7492
 HV7492;                    North         East     Units Scale Factor Converg.
 HV7492;SPC MD       -   146,991.808   413,106.635   MT  0.99995185   +0 05 41.8
 HV7492;SPC MD       -   482,255.62  1,355,334.02   sFT  0.99995185   +0 05 41.8
 HV7492;UTM  18      - 4,317,377.246   339,890.161   MT  0.99991566   -1 09 48.4
 HV7492
 HV7492!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7492!SPC MD       -   0.99999513  x   0.99995185  =   0.99994698
 HV7492!UTM  18      -   0.99999513  x   0.99991566  =   0.99991079
 HV7492
 HV7492_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3989017377(NAD 83)
 HV7492
 HV7492                          SUPERSEDED SURVEY CONTROL
 HV7492
 HV7492  NAD 83(1986)-  38 59 26.74966(N)    076 50 55.37294(W) AD(       ) 2
 HV7492  NAD 27      -  38 59 26.35329(N)    076 50 56.47434(W) AD(       ) 2
 HV7492  NGVD 29 (07/19/86)   63.6    (m)          209.     (f) VERT ANG       
 HV7492
 HV7492.Superseded values are not recommended for survey control.
 HV7492
 HV7492.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7492.See file dsdata.pdf to determine how the superseded data were derived.
 HV7492
 HV7492_MARKER: Z = SEE DESCRIPTION
 HV7492_SETTING: 0 = UNSPECIFIED SETTING
 HV7492_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7492
 HV7492  HISTORY     - Date     Condition        Report By
 HV7492  HISTORY     - 1969     MONUMENTED       WSSC
 HV7492
 HV7492                          STATION DESCRIPTION
 HV7492
 HV7492'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7492'THE STATION IS LOCATED IN THE CENTER OF ROUTE 193, EAST OF
 HV7492'GREENBELT AND NORTH OF SEABROOK ACRES, .4 MILES EAST OF CIPRIANO
 HV7492'ROAD.
 HV7492'
 HV7492'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 193 AND
 HV7492'CIPRIANO ROAD, GO EAST ON ROUTE 193 FOR .40 MILES TO THE STATION
 HV7492'ON THE LEFT.
 HV7492'
 HV7492'THE STATION MARK IS AN IRON PIPE WITH A BRASS SCREW IN THE
 HV7492'CENTER.  IT IS OPPOSITE HOUSE NO. 9003, 64.08 FEET NORTHEAST OF
 HV7492'THE CENTER OF A WATER MANHOLE, 60.64 FEET NORTHWEST OF A POLE,
 HV7492'44.69 FEET NORTHWEST OF THE NORTHWEST CORNER OF A CONCRETE
 HV7492'HEADWALL ON THE WEST SIDE OF DRIVE, AND 55.38 FEET NORTHWEST OF
 HV7492'THE NORTHWEST CORNER OF A CONCRETE HEADWALL ON THE EAST
 HV7492'SIDE OF DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2160 ***********************************************************************
 JV2160  DESIGNATION -  163 BORR
 JV2160  PID         -  JV2160
 JV2160  STATE/COUNTY-  MD/FREDERICK
 JV2160  COUNTRY     -  US
 JV2160  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2160
 JV2160                         *CURRENT SURVEY CONTROL
 JV2160  ______________________________________________________________________
 JV2160* NAD 83(1986) POSITION- 39 18 29.     (N) 077 28 48.     (W)   SCALED
 JV2160* NAVD 88 ORTHO HEIGHT -    86.660 (meters)      284.32  (feet) ADJUSTED
 JV2160  ______________________________________________________________________
 JV2160  GEOID HEIGHT    -        -32.657 (meters)                     GEOID18
 JV2160  DYNAMIC HEIGHT  -         86.613 (meters)      284.16  (feet) COMP
 JV2160  MODELED GRAVITY -    980,081.8   (mgal)                       NAVD 88
 JV2160
 JV2160  VERT ORDER      -  FIRST     CLASS II
 JV2160
 JV2160.The horizontal coordinates were scaled from a map and have
 JV2160.an estimated accuracy of +/- 6 seconds.
 JV2160
 JV2160.The orthometric height was determined by differential leveling and
 JV2160.adjusted by the NATIONAL GEODETIC SURVEY
 JV2160.in June 1991.
 JV2160
 JV2160.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2160.GEOID18 height accuracy estimate available here.
 JV2160
 JV2160.Click photographs - Photos may exist for this station.
 JV2160
 JV2160.The dynamic height is computed by dividing the NAVD 88
 JV2160.geopotential number by the normal gravity value computed on the
 JV2160.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2160.degrees latitude (g = 980.6199 gals.).
 JV2160
 JV2160.The modeled gravity was interpolated from observed gravity values.
 JV2160
 JV2160;                    North         East    Units  Estimated Accuracy
 JV2160;SPC MD       -   182,310.      358,600.      MT  (+/- 180 meters Scaled)
 JV2160
 JV2160_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ861538(NAD 83)
 JV2160
 JV2160                          SUPERSEDED SURVEY CONTROL
 JV2160
 JV2160  NGVD 29 (11/26/84)   86.881  (m)          285.04   (f) ADJUSTED    1 2
 JV2160
 JV2160.Superseded values are not recommended for survey control.
 JV2160
 JV2160.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2160.See file dsdata.pdf to determine how the superseded data were derived.
 JV2160
 JV2160_MARKER: B = BOLT
 JV2160_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2160_SP_SET: CULVERT
 JV2160_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2160
 JV2160  HISTORY     - Date     Condition        Report By
 JV2160  HISTORY     - 1903     MONUMENTED       BORR
 JV2160  HISTORY     - 1941     GOOD             CGS
 JV2160
 JV2160                          STATION DESCRIPTION
 JV2160
 JV2160'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2160'0.3 MI W FROM DOUB.
 JV2160'ABOUT 0.3 MILE WEST OF THE BALTIMORE AND OHIO RAILROAD STATION AT
 JV2160'DOUB, FREDERICK COUNTY, ON THE ADAMSTOWN CUT-OFF, ABOUT 0.1 MILE
 JV2160'WEST OF A ROAD UNDERPASS, IN THE TOP OF THE NORTH COPING OF A
 JV2160'STONE CULVERT, 1.8 FEET WEST OF THE EAST END, 1 FOOT FROM THE
 JV2160'NORTH SIDE, 12.0 FEET NORTH OF THE NORTH RAIL, AND ABOUT 3 FEET
 JV2160'LOWER THAN THE TOP OF THE RAIL.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3985 ***********************************************************************
 JV3985  DESIGNATION -  1632 WSSC
 JV3985  PID         -  JV3985
 JV3985  STATE/COUNTY-  MD/MONTGOMERY
 JV3985  COUNTRY     -  US
 JV3985  USGS QUAD   -  BELTSVILLE (2016)
 JV3985
 JV3985                         *CURRENT SURVEY CONTROL
 JV3985  ______________________________________________________________________
 JV3985* NAD 83(1986) POSITION- 39 04 32.     (N) 076 59 45.     (W)   SCALED
 JV3985* NAVD 88 ORTHO HEIGHT -   126.49  (+/-2cm)      415.0   (feet) VERTCON3
 JV3985  ______________________________________________________________________
 JV3985  GEOID HEIGHT    -        -31.977 (meters)                     GEOID18
 JV3985  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV3985
 JV3985.The horizontal coordinates were scaled from a map and have
 JV3985.an estimated accuracy of +/- 6 seconds.
 JV3985
 JV3985.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3985.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3985
 JV3985.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3985.GEOID18 height accuracy estimate available here.
 JV3985
 JV3985.The vertical order pertains to the NGVD 29 superseded value.
 JV3985
 JV3985.Click photographs - Photos may exist for this station.
 JV3985
 JV3985;                    North         East    Units  Estimated Accuracy
 JV3985;SPC MD       -   156,390.      400,360.      MT  (+/- 180 meters Scaled)
 JV3985
 JV3985_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ273270(NAD 83)
 JV3985
 JV3985                          SUPERSEDED SURVEY CONTROL
 JV3985
 JV3985  NGVD 29 (11/26/84)  126.701  (m)          415.68   (f) ADJUSTED    2 0
 JV3985
 JV3985.Superseded values are not recommended for survey control.
 JV3985
 JV3985.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3985.See file dsdata.pdf to determine how the superseded data were derived.
 JV3985
 JV3985_MARKER: DD = SURVEY DISK
 JV3985_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV3985_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3985
 JV3985  HISTORY     - Date     Condition        Report By
 JV3985  HISTORY     - UNK      MONUMENTED       WSSC
 JV3985  HISTORY     - 1952     MARK NOT FOUND   CGS
 JV3985
 JV3985                          STATION DESCRIPTION
 JV3985
 JV3985'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV3985'0.5 MI E FROM COLESVILLE.
 JV3985'AT COLESVILLE GARDENS, ON FAIRLAND ROAD, AT A SCHOOLHOUSE, 12 FT
 JV3985'E OF THE CENTERLINE OF A DRIVE TO THE SCHOOL, AND 2 FT W OF THE
 JV3985'E LINE OF THE BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR4177 ***********************************************************************
 DR4177  DESIGNATION -  16328 RESET
 DR4177  PID         -  DR4177
 DR4177  STATE/COUNTY-  MD/PRINCE GEORGES
 DR4177  COUNTRY     -  US
 DR4177  USGS QUAD   -  UPPER MARLBORO (2016)
 DR4177
 DR4177                         *CURRENT SURVEY CONTROL
 DR4177  ______________________________________________________________________
 DR4177* NAD 83(1986) POSITION- 38 49 17.09   (N) 076 50 57.22   (W)   HD_HELD1
 DR4177* NAVD 88 ORTHO HEIGHT -    63.256 (meters)      207.53  (feet) ADJUSTED
 DR4177  ______________________________________________________________________
 DR4177  GEOID HEIGHT    -        -32.597 (meters)                     GEOID18
 DR4177  DYNAMIC HEIGHT  -         63.221 (meters)      207.42  (feet) COMP
 DR4177  MODELED GRAVITY -    980,070.3   (mgal)                       NAVD 88
 DR4177
 DR4177  VERT ORDER      -  FIRST     CLASS II
 DR4177
 DR4177.The horizontal coordinates were determined by differentially corrected
 DR4177.hand held GPS observations or other comparable positioning techniques
 DR4177.and have an estimated accuracy of +/- 3 meters.
 DR4177
 DR4177.The orthometric height was determined by differential leveling and
 DR4177.adjusted by the NATIONAL GEODETIC SURVEY
 DR4177.in August 2020.
 DR4177
 DR4177.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR4177.GEOID18 height accuracy estimate available here.
 DR4177
 DR4177.Click photographs - Photos may exist for this station.
 DR4177
 DR4177.The dynamic height is computed by dividing the NAVD 88
 DR4177.geopotential number by the normal gravity value computed on the
 DR4177.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR4177.degrees latitude (g = 980.6199 gals.).
 DR4177
 DR4177.The modeled gravity was interpolated from observed gravity values.
 DR4177
 DR4177;                    North         East    Units  Estimated Accuracy
 DR4177;SPC MD       -   128,192.5     413,093.0     MT  (+/- 3 meters HH1 GPS) 
 DR4177
 DR4177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3946498583(NAD 83)
 DR4177
 DR4177                          SUPERSEDED SURVEY CONTROL
 DR4177
 DR4177.No superseded survey control is available for this station.
 DR4177
 DR4177_MARKER: DD = SURVEY DISK
 DR4177_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR4177_STAMPING: 5261 RESET 16328
 DR4177_MARK LOGO: WSSC
 DR4177_PROJECTION: RECESSED 15 CENTIMETERS
 DR4177_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR4177+STABILITY: SURFACE MOTION
 DR4177_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR4177+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 DR4177
 DR4177  HISTORY     - Date     Condition        Report By
 DR4177  HISTORY     - UNK      MONUMENTED       WSSC
 DR4177  HISTORY     - 20191028 GOOD             MDSHA
 DR4177
 DR4177                          STATION DESCRIPTION
 DR4177
 DR4177'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 DR4177'THE MARK IS LOCATED ABOUT 5.4 MI (8.7 KM) WEST OF UPPER MARLBORO, 5.2
 DR4177'MI (8.4 KM) SOUTHEAST OF CORAL HILLS AND 3.3 MI (5.3 KM) SOUTHEAST OF
 DR4177'DISTRICT HEIGHTS.
 DR4177'
 DR4177'TO REACH FROM I-495 AND MD ROUTE 4, GO SOUTHEAST ON MD ROUTE 4 FOR 1.6
 DR4177'MI (2.6 KM) TO THE MARK ON THE LEFT IN THE MEDIAN, JUST PRIOR TO DOWER
 DR4177'HOUSE ROAD.
 DR4177'
 DR4177'IT IS 245.1 FT (74.7 M) NORTHWEST OF THE CENTERLINE OF DOWER HOUSE
 DR4177'ROAD, 187.7 FT (57.2 M) NORTHWEST OF A TRAFFIC LIGHT POLE, 55.5 FT
 DR4177'(16.9 M) NORTHEAST OF THE NORTHEAST EDGE OF MD ROUTE 4 SOUTHBOUND
 DR4177'ROADWAY TURNING LANE, 30.9 FT (9.4 M) SOUTHWEST OF THE SOUTHWEST EDGE
 DR4177'OF MD ROUTE 4 NORTHBOUND ROADWAY SHOULDER, 17.0 FT (5.2 M) NORTHEAST
 DR4177'OF A DRAINAGE INLET AND SET IN THE TOP OF A 10-IN (25 CM) ROUND
 DR4177'CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1440 ***********************************************************************
 HV1440  DESIGNATION -  1636 WSSC
 HV1440  PID         -  HV1440
 HV1440  STATE/COUNTY-  MD/MONTGOMERY
 HV1440  COUNTRY     -  US
 HV1440  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1440
 HV1440                         *CURRENT SURVEY CONTROL
 HV1440  ______________________________________________________________________
 HV1440* NAD 83(1986) POSITION- 38 59 49.     (N) 076 59 37.     (W)   SCALED
 HV1440* NAVD 88 ORTHO HEIGHT -    74.76  (+/-2cm)      245.3   (feet) VERTCON3
 HV1440  ______________________________________________________________________
 HV1440  GEOID HEIGHT    -        -32.022 (meters)                     GEOID18
 HV1440  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1440
 HV1440.The horizontal coordinates were scaled from a map and have
 HV1440.an estimated accuracy of +/- 6 seconds.
 HV1440
 HV1440.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1440.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1440
 HV1440.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1440.GEOID18 height accuracy estimate available here.
 HV1440
 HV1440.The vertical order pertains to the NGVD 29 superseded value.
 HV1440
 HV1440.Click photographs - Photos may exist for this station.
 HV1440
 HV1440;                    North         East    Units  Estimated Accuracy
 HV1440;SPC MD       -   147,670.      400,550.      MT  (+/- 180 meters Scaled)
 HV1440
 HV1440_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ273183(NAD 83)
 HV1440
 HV1440                          SUPERSEDED SURVEY CONTROL
 HV1440
 HV1440  NGVD 29 (11/26/84)   74.975  (m)          245.98   (f) ADJUSTED    2 0
 HV1440
 HV1440.Superseded values are not recommended for survey control.
 HV1440
 HV1440.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1440.See file dsdata.pdf to determine how the superseded data were derived.
 HV1440
 HV1440_MARKER: DD = SURVEY DISK
 HV1440_SETTING: 0 = UNSPECIFIED SETTING
 HV1440_STAMPING: 1636
 HV1440_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1440
 HV1440  HISTORY     - Date     Condition        Report By
 HV1440  HISTORY     - UNK      MONUMENTED       WSSC
 HV1440  HISTORY     - 1939     GOOD             WSSC
 HV1440  HISTORY     - 1951     MARK NOT FOUND   CGS
 HV1440
 HV1440                          STATION DESCRIPTION
 HV1440
 HV1440'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1440'0.2 MI S FROM SEEK CORNERS.
 HV1440'ON UNIVERSITY BOULEVARD, AT THE JUNCTION OF A PRIVATE ROAD
 HV1440'LEADING EAST, 87.6 FEET SOUTH ACROSS THE PRIVATE ROAD FROM A
 HV1440'10-INCH MAPLE TREE, 29.3 FEET SOUTH ACROSS THE PRIVATE ROAD
 HV1440'FROM A 12-INCH LOCUST TREE, ON THE SOUTH SIDE OF THE PRIVATE
 HV1440'ROAD, ON THE EAST SIDE OF UNIVERSITY BOULEVARD, AND 5.9 FEET WEST
 HV1440'OF A 30-INCH MAPLE TREE.
 HV1440
 HV1440                          STATION RECOVERY (1951)
 HV1440
 HV1440'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 HV1440'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7525 ***********************************************************************
 HV7525  DESIGNATION -  16364 WSSC 1970
 HV7525  PID         -  HV7525
 HV7525  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7525  COUNTRY     -  US
 HV7525  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7525
 HV7525                         *CURRENT SURVEY CONTROL
 HV7525  ______________________________________________________________________
 HV7525* NAD 83(1993) POSITION- 38 51 11.18707(N) 076 46 10.85180(W)   ADJUSTED
 HV7525* NAVD 88 ORTHO HEIGHT -    48.9   (meters)      160.    (feet) VERTCON3
 HV7525  ______________________________________________________________________
 HV7525  GEOID HEIGHT    -        -32.786 (meters)                     GEOID18
 HV7525  LAPLACE CORR    -         -5.89  (seconds)                    DEFLEC18
 HV7525  HORZ ORDER      -  SECOND
 HV7525
 HV7525.The horizontal coordinates were established by classical geodetic methods
 HV7525.and adjusted by the National Geodetic Survey in November 1994.
 HV7525
 HV7525.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7525.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7525
 HV7525.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7525.GEOID18 height accuracy estimate available here.
 HV7525
 HV7525.Click photographs - Photos may exist for this station.
 HV7525
 HV7525.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7525
 HV7525. The following values were computed from the NAD 83(1993) position.
 HV7525
 HV7525;                    North         East     Units Scale Factor Converg.
 HV7525;SPC MD       -   131,725.101   419,991.867   MT  0.99994993   +0 08 40.4
 HV7525;SPC MD       -   432,168.10  1,377,923.32   sFT  0.99994993   +0 08 40.4
 HV7525;UTM  18      - 4,301,963.944   346,438.614   MT  0.99989038   -1 06 37.4
 HV7525
 HV7525!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7525!SPC MD       -   0.99999746  x   0.99994993  =   0.99994739
 HV7525!UTM  18      -   0.99999746  x   0.99989038  =   0.99988784
 HV7525
 HV7525_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4643801963(NAD 83)
 HV7525
 HV7525|---------------------------------------------------------------------|
 HV7525| PID    Reference Object                     Distance      Geod. Az  |
 HV7525|                                                           dddmmss.s |
 HV7525| HV7524 17497 WSSC 1970                     160.986 METERS 17927     |
 HV7525|---------------------------------------------------------------------|
 HV7525
 HV7525                          SUPERSEDED SURVEY CONTROL
 HV7525
 HV7525  NAD 83(1991)-  38 51 11.18685(N)    076 46 10.85184(W) AD(       ) 2
 HV7525  NAD 83(1986)-  38 51 11.18409(N)    076 46 10.86447(W) AD(       ) 2
 HV7525  NAD 27      -  38 51 10.77850(N)    076 46 11.97501(W) AD(       ) 2
 HV7525  NGVD 29 (07/19/86)   49.2    (m)          161.     (f) VERT ANG       
 HV7525
 HV7525.Superseded values are not recommended for survey control.
 HV7525
 HV7525.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7525.See file dsdata.pdf to determine how the superseded data were derived.
 HV7525
 HV7525_MARKER: Z = SEE DESCRIPTION
 HV7525_SETTING: 0 = UNSPECIFIED SETTING
 HV7525_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7525
 HV7525  HISTORY     - Date     Condition        Report By
 HV7525  HISTORY     - 1969     MONUMENTED       WSSC
 HV7525
 HV7525                          STATION DESCRIPTION
 HV7525
 HV7525'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7525'THE STATION IS LOCATED ON OLD ROUTE 202, 2.2 MILES SOUTHEAST OF
 HV7525'THE UNIVERSITY OF MARYLAND TOBACCO EXPERIMENTAL FARM, 1200 FEET
 HV7525'EAST OF TOWN FARM DRIVE AND 50 FEET NORTH OF NEW ROUTE 202.
 HV7525'
 HV7525'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 202 AND
 HV7525'ROUTE 214 (CENTRAL AVENUE), GO SOUTHEAST ON ROUTE 202 FOR 3.3
 HV7525'MILES TO TOWN FARM DRIVE ON THE LEFT.  TURN LEFT ON TOWN FARM
 HV7525'DRIVE AND GO NORTH FOR 100 FEET TO OLD ROUTE 202.  TURN RIGHT
 HV7525'ON OLD ROUTE 202 AND GO EAST FOR 1200 FEET TO THE STATION ON
 HV7525'THE RIGHT.
 HV7525'
 HV7525'THE STATION MARK IS AN IRON PIPE WITH A BRASS SCREW CENTER AND
 HV7525'IS .5 FEET BELOW THE SURFACE.  IT IS 41.86 FEET SOUTHWEST OF A
 HV7525'4-INCH LOCUST, 27.80 FEET SOUTHWEST OF A P.K. NAIL IN THE
 HV7525'CENTERLINE OF OLD ROUTE 202, 26.48 FEET SOUTHEAST OF A P.K. NAIL
 HV7525'ON THE CENTERLINE OF OLD ROUTE 202 AND 8.43 FEET SOUTH OF A
 HV7525'P.K. NAIL IN THE SOUTH EDGE OF OLD ROUTE 202.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1287 ***********************************************************************
 HV1287  DESIGNATION -  1637 WSSC
 HV1287  PID         -  HV1287
 HV1287  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1287  COUNTRY     -  US
 HV1287  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1287
 HV1287                         *CURRENT SURVEY CONTROL
 HV1287  ______________________________________________________________________
 HV1287* NAD 83(1986) POSITION- 38 59 39.     (N) 076 52 44.     (W)   SCALED
 HV1287* NAVD 88 ORTHO HEIGHT -    54.33  (+/-2cm)      178.2   (feet) VERTCON3
 HV1287  ______________________________________________________________________
 HV1287  GEOID HEIGHT    -        -32.268 (meters)                     GEOID18
 HV1287  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1287
 HV1287.The horizontal coordinates were scaled from a map and have
 HV1287.an estimated accuracy of +/- 6 seconds.
 HV1287
 HV1287.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1287.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1287
 HV1287.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1287.GEOID18 height accuracy estimate available here.
 HV1287
 HV1287.The vertical order pertains to the NGVD 29 superseded value.
 HV1287
 HV1287.Click photographs - Photos may exist for this station.
 HV1287
 HV1287;                    North         East    Units  Estimated Accuracy
 HV1287;SPC MD       -   147,370.      410,490.      MT  (+/- 180 meters Scaled)
 HV1287
 HV1287_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ372178(NAD 83)
 HV1287
 HV1287                          SUPERSEDED SURVEY CONTROL
 HV1287
 HV1287  NGVD 29 (11/26/84)   54.552  (m)          178.98   (f) ADJUSTED    2 0
 HV1287
 HV1287.Superseded values are not recommended for survey control.
 HV1287
 HV1287.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1287.See file dsdata.pdf to determine how the superseded data were derived.
 HV1287
 HV1287_MARKER: DD = SURVEY DISK
 HV1287_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1287_STAMPING: 1637
 HV1287_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1287
 HV1287  HISTORY     - Date     Condition        Report By
 HV1287  HISTORY     - UNK      MONUMENTED       WSSC
 HV1287  HISTORY     - 1944     GOOD             WSSC
 HV1287
 HV1287                          STATION DESCRIPTION
 HV1287
 HV1287'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1287'1.2 MI E FROM BERWYN HEIGHTS.
 HV1287'ON GREENBELT ROAD, ABOUT 350 FEET EAST OF THE ROAD FORK TO
 HV1287'GREENBELT, ON THE SOUTH SIDE OF THE ROAD, IN A FIELD, AND 6 FEET
 HV1287'WEST OF THE FENCE ON THE EAST SIDE OF THE FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1301 ***********************************************************************
 HV1301  DESIGNATION -  1638 WSSC
 HV1301  PID         -  HV1301
 HV1301  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1301  COUNTRY     -  US
 HV1301  USGS QUAD   -  LANHAM (2016)
 HV1301
 HV1301                         *CURRENT SURVEY CONTROL
 HV1301  ______________________________________________________________________
 HV1301* NAD 83(1986) POSITION- 38 53 23.     (N) 076 51 34.     (W)   SCALED
 HV1301* NAVD 88 ORTHO HEIGHT -    48.305 (meters)      158.48  (feet) ADJUSTED
 HV1301  ______________________________________________________________________
 HV1301  GEOID HEIGHT    -        -32.461 (meters)                     GEOID18
 HV1301  DYNAMIC HEIGHT  -         48.278 (meters)      158.39  (feet) COMP
 HV1301  MODELED GRAVITY -    980,079.5   (mgal)                       NAVD 88
 HV1301
 HV1301  VERT ORDER      -  SECOND    CLASS 0
 HV1301
 HV1301.The horizontal coordinates were scaled from a map and have
 HV1301.an estimated accuracy of +/- 6 seconds.
 HV1301
 HV1301.The orthometric height was determined by differential leveling and
 HV1301.adjusted by the NATIONAL GEODETIC SURVEY
 HV1301.in June 1991.
 HV1301
 HV1301.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1301.GEOID18 height accuracy estimate available here.
 HV1301
 HV1301.Click photographs - Photos may exist for this station.
 HV1301
 HV1301.The dynamic height is computed by dividing the NAVD 88
 HV1301.geopotential number by the normal gravity value computed on the
 HV1301.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1301.degrees latitude (g = 980.6199 gals.).
 HV1301
 HV1301.The modeled gravity was interpolated from observed gravity values.
 HV1301
 HV1301;                    North         East    Units  Estimated Accuracy
 HV1301;SPC MD       -   135,770.      412,190.      MT  (+/- 180 meters Scaled)
 HV1301
 HV1301_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ387061(NAD 83)
 HV1301
 HV1301                          SUPERSEDED SURVEY CONTROL
 HV1301
 HV1301  NGVD 29 (11/26/84)   48.545  (m)          159.27   (f) ADJUSTED    2 0
 HV1301
 HV1301.Superseded values are not recommended for survey control.
 HV1301
 HV1301.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1301.See file dsdata.pdf to determine how the superseded data were derived.
 HV1301
 HV1301_MARKER: DD = SURVEY DISK
 HV1301_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1301_SP_SET: CHURCH BUILDING
 HV1301_STAMPING: 1638
 HV1301_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1301
 HV1301  HISTORY     - Date     Condition        Report By
 HV1301  HISTORY     - UNK      MONUMENTED       WSSC
 HV1301  HISTORY     - 1958     GOOD             CGS
 HV1301
 HV1301                          STATION DESCRIPTION
 HV1301
 HV1301'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1301'1.8 MI W FROM LARGO.
 HV1301'ABOUT 1.8 MILES WEST ALONG STATE HIGHWAY 214 FROM THE JUNCTION
 HV1301'OF STATE HIGHWAY 202 AT LARGO, (GLENDALE AVENUE), SET VERTICALLY
 HV1301'IN THE WEST BRICK FACE OF A CHURCH, 3.1 FEET SOUTH OF THE
 HV1301'NORTHWEST CORNER OF THE BUILDING AND 1.0 FOOT ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7243 ***********************************************************************
 HV7243  DESIGNATION -  16384 WSSC 1970
 HV7243  PID         -  HV7243
 HV7243  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7243  COUNTRY     -  US
 HV7243  USGS QUAD   -  BOWIE (2016)
 HV7243
 HV7243                         *CURRENT SURVEY CONTROL
 HV7243  ______________________________________________________________________
 HV7243* NAD 83(1991) POSITION- 38 59 09.60786(N) 076 42 35.98210(W)   ADJUSTED
 HV7243* NAVD 88 ORTHO HEIGHT -    12.0   (meters)       39.    (feet) VERTCON3
 HV7243  ______________________________________________________________________
 HV7243  GEOID HEIGHT    -        -32.757 (meters)                     GEOID18
 HV7243  LAPLACE CORR    -         -5.62  (seconds)                    DEFLEC18
 HV7243  HORZ ORDER      -  SECOND
 HV7243
 HV7243.The horizontal coordinates were established by classical geodetic methods
 HV7243.and adjusted by the National Geodetic Survey in January 1992.
 HV7243
 HV7243.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7243.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7243
 HV7243.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7243.GEOID18 height accuracy estimate available here.
 HV7243
 HV7243.Click photographs - Photos may exist for this station.
 HV7243
 HV7243.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7243
 HV7243. The following values were computed from the NAD 83(1991) position.
 HV7243
 HV7243;                    North         East     Units Scale Factor Converg.
 HV7243;SPC MD       -   146,492.220   425,125.781   MT  0.99995169   +0 10 55.3
 HV7243;SPC MD       -   480,616.56  1,394,766.83   sFT  0.99995169   +0 10 55.3
 HV7243;UTM  18      - 4,316,613.906   351,894.728   MT  0.99987010   -1 04 33.6
 HV7243
 HV7243!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7243!SPC MD       -   1.00000326  x   0.99995169  =   0.99995495
 HV7243!UTM  18      -   1.00000326  x   0.99987010  =   0.99987336
 HV7243
 HV7243:                Primary Azimuth Mark                     Grid Az
 HV7243:SPC MD       -  WHITE MARSH RESET                        246 55 13.5
 HV7243:UTM  18      -  WHITE MARSH RESET                        248 10 42.4
 HV7243
 HV7243_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5189416613(NAD 83)
 HV7243
 HV7243|---------------------------------------------------------------------|
 HV7243| PID    Reference Object                     Distance      Geod. Az  |
 HV7243|                                                           dddmmss.s |
 HV7243| HV9583 WHITE MARSH RESET                   APPROX. 0.8 KM 2470608.8 |
 HV7243| HV7245 16385 WSSC 1970                     251.362 METERS 28926     |
 HV7243|---------------------------------------------------------------------|
 HV7243
 HV7243                          SUPERSEDED SURVEY CONTROL
 HV7243
 HV7243  NAD 83(1986)-  38 59 09.60526(N)    076 42 35.99307(W) AD(       ) 2
 HV7243  NAD 27      -  38 59 09.20799(N)    076 42 37.11028(W) AD(       ) 2
 HV7243  NGVD 29 (07/19/86)   12.2    (m)           40.     (f) VERT ANG       
 HV7243
 HV7243.Superseded values are not recommended for survey control.
 HV7243
 HV7243.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7243.See file dsdata.pdf to determine how the superseded data were derived.
 HV7243
 HV7243_MARKER: DD = SURVEY DISK
 HV7243_SETTING: 0 = UNSPECIFIED SETTING
 HV7243_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7243
 HV7243  HISTORY     - Date     Condition        Report By
 HV7243  HISTORY     - 1969     MONUMENTED       WSSC
 HV7243  HISTORY     - 20020123 MARK NOT FOUND   USPSQD
 HV7243
 HV7243                          STATION DESCRIPTION
 HV7243
 HV7243'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7243'THE STATION IS LOCATED 2.0 MILES SOUTHEAST OF BOWIE RACE TRACK, 5
 HV7243'MILES SOUTHWEST OF THE PRINCE GEORGES COUNTY LINE.
 HV7243'
 HV7243'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 301 AND ROUTE
 HV7243'450, GO SOUTHWEST ON ROUTE 450 FOR 300 FEET TO THE STATION ON THE
 HV7243'RIGHT.
 HV7243'
 HV7243'THE STATION MARK IS A CONCRETE MONUMENT WITH A BRONZE DISK STAMPED
 HV7243'MBCS MARSH, 1962 AND IS .2 FEET ABOVE THE SURFACE.  IT IS 58.52
 HV7243'FEET NORTHEAST OF POLE NO. 374646, 9.30 FEET OFF THE EDGE OF THE
 HV7243'MACADAM, 48.85 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A
 HV7243'CONCRETE HEADWALL AND 12.97 FEET SOUTHWEST OF THE SECOND GUARD
 HV7243'RAIL POST FROM THE END.
 HV7243
 HV7243                          STATION RECOVERY (2002)
 HV7243
 HV7243'RECOVERY NOTE BY US POWER SQUADRON 2002 (WAY)
 HV7243'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7245 ***********************************************************************
 HV7245  DESIGNATION -  16385 WSSC 1970
 HV7245  PID         -  HV7245
 HV7245  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7245  COUNTRY     -  US
 HV7245  USGS QUAD   -  BOWIE (2016)
 HV7245
 HV7245                         *CURRENT SURVEY CONTROL
 HV7245  ______________________________________________________________________
 HV7245* NAD 83(1991) POSITION- 38 59 12.31859(N) 076 42 45.83170(W)   ADJUSTED
 HV7245* NAVD 88 ORTHO HEIGHT -    15.9   (meters)       52.    (feet) VERTCON3
 HV7245  ______________________________________________________________________
 HV7245  GEOID HEIGHT    -        -32.748 (meters)                     GEOID18
 HV7245  LAPLACE CORR    -         -5.66  (seconds)                    DEFLEC18
 HV7245  HORZ ORDER      -  SECOND
 HV7245
 HV7245.The horizontal coordinates were established by classical geodetic methods
 HV7245.and adjusted by the National Geodetic Survey in January 1992.
 HV7245
 HV7245.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7245.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7245
 HV7245.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7245.GEOID18 height accuracy estimate available here.
 HV7245
 HV7245.Click photographs - Photos may exist for this station.
 HV7245
 HV7245.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7245
 HV7245. The following values were computed from the NAD 83(1991) position.
 HV7245
 HV7245;                    North         East     Units Scale Factor Converg.
 HV7245;SPC MD       -   146,575.058   424,888.474   MT  0.99995172   +0 10 49.1
 HV7245;SPC MD       -   480,888.34  1,393,988.27   sFT  0.99995172   +0 10 49.1
 HV7245;UTM  18      - 4,316,701.927   351,659.316   MT  0.99987096   -1 04 39.9
 HV7245
 HV7245!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7245!SPC MD       -   1.00000265  x   0.99995172  =   0.99995437
 HV7245!UTM  18      -   1.00000265  x   0.99987096  =   0.99987361
 HV7245
 HV7245_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5165916701(NAD 83)
 HV7245
 HV7245                          SUPERSEDED SURVEY CONTROL
 HV7245
 HV7245  NAD 83(1986)-  38 59 12.31601(N)    076 42 45.84267(W) AD(       ) 2
 HV7245  NAD 27      -  38 59 11.91878(N)    076 42 46.95957(W) AD(       ) 2
 HV7245  NGVD 29 (07/19/86)   16.1    (m)           53.     (f) VERT ANG       
 HV7245
 HV7245.Superseded values are not recommended for survey control.
 HV7245
 HV7245.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7245.See file dsdata.pdf to determine how the superseded data were derived.
 HV7245
 HV7245_MARKER: DD = SURVEY DISK
 HV7245_SETTING: 0 = UNSPECIFIED SETTING
 HV7245_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7245
 HV7245  HISTORY     - Date     Condition        Report By
 HV7245  HISTORY     - 1969     MONUMENTED       WSSC
 HV7245  HISTORY     - 20020123 MARK NOT FOUND   USPSQD
 HV7245
 HV7245                          STATION DESCRIPTION
 HV7245
 HV7245'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7245'THE STATION IS LOCATED 2.0 MILES SOUTHEAST OF BOWIE RACE TRACK, .6
 HV7245'MILES SOUTHWEST OF THE PRINCE GEORGES COUNTY LINE.
 HV7245'
 HV7245'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 301 AND ROUTE
 HV7245'450, GO SOUTHWEST ON ROUTE 450 FOR 800 FEET TO THE STATION ON THE
 HV7245'RIGHT.
 HV7245'
 HV7245'THE STATION MARK IS A CONCRETE MONUMENT WITH A BRONZE DISK STAMPED
 HV7245'M.B.C.S. MARSH AZ.MK. AND IS .2 FEET ABOVE THE SURFACE.  IT IS
 HV7245'21.10 FEET NORTHWEST OF A POLE, 9.16 FEET NORTHWEST OF AN IRON
 HV7245'GUARD RAIL POST AND 4.21 FEET NORTHEAST OF AN IRON GUARD RAIL.
 HV7245
 HV7245                          STATION RECOVERY (2002)
 HV7245
 HV7245'RECOVERY NOTE BY US POWER SQUADRON 2002 (WAY)
 HV7245'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1416 ***********************************************************************
 JV1416  DESIGNATION -  1639 WSSC
 JV1416  PID         -  JV1416
 JV1416  STATE/COUNTY-  MD/MONTGOMERY
 JV1416  COUNTRY     -  US
 JV1416  USGS QUAD   -  BELTSVILLE (2016)
 JV1416
 JV1416                         *CURRENT SURVEY CONTROL
 JV1416  ______________________________________________________________________
 JV1416* NAD 83(1986) POSITION- 39 00 50.     (N) 076 58 44.     (W)   SCALED
 JV1416* NAVD 88 ORTHO HEIGHT -    92.55  (+/-2cm)      303.6   (feet) VERTCON3
 JV1416  ______________________________________________________________________
 JV1416  GEOID HEIGHT    -        -32.035 (meters)                     GEOID18
 JV1416  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1416
 JV1416.The horizontal coordinates were scaled from a map and have
 JV1416.an estimated accuracy of +/- 6 seconds.
 JV1416
 JV1416.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1416.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1416
 JV1416.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1416.GEOID18 height accuracy estimate available here.
 JV1416
 JV1416.The vertical order pertains to the NGVD 29 superseded value.
 JV1416
 JV1416.Click photographs - Photos may exist for this station.
 JV1416
 JV1416;                    North         East    Units  Estimated Accuracy
 JV1416;SPC MD       -   149,550.      401,830.      MT  (+/- 180 meters Scaled)
 JV1416
 JV1416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ286201(NAD 83)
 JV1416
 JV1416                          SUPERSEDED SURVEY CONTROL
 JV1416
 JV1416  NGVD 29 (11/26/84)   92.764  (m)          304.34   (f) ADJUSTED    2 0
 JV1416
 JV1416.Superseded values are not recommended for survey control.
 JV1416
 JV1416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1416.See file dsdata.pdf to determine how the superseded data were derived.
 JV1416
 JV1416_MARKER: DD = SURVEY DISK
 JV1416_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1416_STAMPING: 1639
 JV1416_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1416
 JV1416  HISTORY     - Date     Condition        Report By
 JV1416  HISTORY     - UNK      MONUMENTED       WSSC
 JV1416  HISTORY     - 1939     MARK NOT FOUND   WSSC
 JV1416  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1416
 JV1416                          STATION DESCRIPTION
 JV1416
 JV1416'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1416'AT OAKVIEW.
 JV1416'ON AN OLD ROAD PARALLELING NEW HAMPSHIRE AVENUE, AT THE JUNCTION OF
 JV1416'A GRAVEL ROAD LEADING WEST, ABOUT 100 FEET NORTH OF HUB 8626,
 JV1416'AND IN LINE WITH A ROW OF TREES ON THE NORTH SIDE OF THE GRAVEL
 JV1416'ROAD AND A LINE OF POLES ON THE WEST SIDE OF THE MAIN ROAD.
 JV1416
 JV1416                          STATION RECOVERY (1951)
 JV1416
 JV1416'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV1416'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0675 ***********************************************************************
 HV0675  DESIGNATION -  164.1 USGS
 HV0675  PID         -  HV0675
 HV0675  STATE/COUNTY-  MD/ST MARYS
 HV0675  COUNTRY     -  US
 HV0675  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0675
 HV0675                         *CURRENT SURVEY CONTROL
 HV0675  ______________________________________________________________________
 HV0675* NAD 83(1986) POSITION- 38 26 59.     (N) 076 45 15.     (W)   SCALED
 HV0675* NAVD 88 ORTHO HEIGHT -    49.703 (meters)      163.07  (feet) ADJUSTED
 HV0675  ______________________________________________________________________
 HV0675  GEOID HEIGHT    -        -33.634 (meters)                     GEOID18
 HV0675  DYNAMIC HEIGHT  -         49.673 (meters)      162.97  (feet) COMP
 HV0675  MODELED GRAVITY -    980,016.7   (mgal)                       NAVD 88
 HV0675
 HV0675  VERT ORDER      -  FIRST     CLASS II
 HV0675
 HV0675.The horizontal coordinates were scaled from a map and have
 HV0675.an estimated accuracy of +/- 6 seconds.
 HV0675
 HV0675.The orthometric height was determined by differential leveling and
 HV0675.adjusted by the NATIONAL GEODETIC SURVEY
 HV0675.in June 1991.
 HV0675
 HV0675.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0675.GEOID18 height accuracy estimate available here.
 HV0675
 HV0675.Click photographs - Photos may exist for this station.
 HV0675
 HV0675.The dynamic height is computed by dividing the NAVD 88
 HV0675.geopotential number by the normal gravity value computed on the
 HV0675.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0675.degrees latitude (g = 980.6199 gals.).
 HV0675
 HV0675.The modeled gravity was interpolated from observed gravity values.
 HV0675
 HV0675;                    North         East    Units  Estimated Accuracy
 HV0675;SPC MD       -    86,950.      421,460.      MT  (+/- 180 meters Scaled)
 HV0675
 HV0675_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH469571(NAD 83)
 HV0675
 HV0675                          SUPERSEDED SURVEY CONTROL
 HV0675
 HV0675  NGVD 29 (11/26/84)   49.969  (m)          163.94   (f) ADJUSTED    1 2
 HV0675
 HV0675.Superseded values are not recommended for survey control.
 HV0675
 HV0675.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0675.See file dsdata.pdf to determine how the superseded data were derived.
 HV0675
 HV0675_MARKER: X = CHISELED CROSS
 HV0675_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0675_SP_SET: CULVERT
 HV0675_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0675
 HV0675  HISTORY     - Date     Condition        Report By
 HV0675  HISTORY     - UNK      MONUMENTED       USGS
 HV0675  HISTORY     - 1941     GOOD             CGS
 HV0675  HISTORY     - 1942     GOOD             CGS
 HV0675
 HV0675                          STATION DESCRIPTION
 HV0675
 HV0675'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0675'0.9 MI NW FROM MECHANICSVILLE.
 HV0675'ABOUT 1.4 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0675'OFFICE AT MECHANICSVILLE, SAINT MARYS COUNTY, ABOUT 0.2 MILE
 HV0675'NORTH OF A ROAD LEADING WEST TO A LARGE BARN, 9.5 FEET EAST OF
 HV0675'THE EAST RAIL OF THE WASHINGTON, BRANDYWINE AND POINT LOOKOUT
 HV0675'RAILROAD, AT A 12-INCH CONCRETE CULVERT, ON THE CENTER OF THE
 HV0675'TOP OF THE WEST HEAD WALL, AND 15 FEET WEST OF THE CENTER LINE
 HV0675'OF THE HIGHWAY.  A CHISELED SQUARE, MARKED 164.1.  NOTE-- .9 MI
 HV0675'NW ALONG ST HIGHWAY 5 FROM THE POST OFFICE AT MECHANICSVILLE,
 HV0675'INSTEAD OF 1.4 MI.  NOTE-- .1 MI N OF A ROAD LEADING W TO A LARGE
 HV0675'BARN, INSTEAD OF .2 MI.  NOTE-- 9 FT E OF THE E RAIL OF THE
 HV0675'WASHINGTON, BRANDYWINE, AND POINT LOOKOUT RR, INSTEAD OF 9.5 FT.
 HV0675'NOTE-- THE SQUARE IS PAINTED USBM 164.1 INSTEAD OF 164.1.
 HV0675
 HV0675                          STATION RECOVERY (1942)
 HV0675
 HV0675'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0675'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2331 ***********************************************************************
 HV2331  DESIGNATION -  1640
 HV2331  PID         -  HV2331
 HV2331  STATE/COUNTY-  MD/MONTGOMERY
 HV2331  COUNTRY     -  US
 HV2331  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2331
 HV2331                         *CURRENT SURVEY CONTROL
 HV2331  ______________________________________________________________________
 HV2331* NAD 83(1986) POSITION- 38 59 29.     (N) 077 00 37.     (W)   SCALED
 HV2331* NAVD 88 ORTHO HEIGHT -    86.878 (meters)      285.03  (feet) ADJUSTED
 HV2331  ______________________________________________________________________
 HV2331  GEOID HEIGHT    -        -31.999 (meters)                     GEOID18
 HV2331  DYNAMIC HEIGHT  -         86.831 (meters)      284.88  (feet) COMP
 HV2331  MODELED GRAVITY -    980,088.2   (mgal)                       NAVD 88
 HV2331
 HV2331  VERT ORDER      -  SECOND    CLASS 0
 HV2331
 HV2331.The horizontal coordinates were scaled from a map and have
 HV2331.an estimated accuracy of +/- 6 seconds.
 HV2331
 HV2331.The orthometric height was determined by differential leveling and
 HV2331.adjusted by the NATIONAL GEODETIC SURVEY
 HV2331.in June 1991.
 HV2331
 HV2331.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2331.GEOID18 height accuracy estimate available here.
 HV2331
 HV2331.Click photographs - Photos may exist for this station.
 HV2331
 HV2331.The dynamic height is computed by dividing the NAVD 88
 HV2331.geopotential number by the normal gravity value computed on the
 HV2331.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2331.degrees latitude (g = 980.6199 gals.).
 HV2331
 HV2331.The modeled gravity was interpolated from observed gravity values.
 HV2331
 HV2331;                    North         East    Units  Estimated Accuracy
 HV2331;SPC MD       -   147,050.      399,110.      MT  (+/- 180 meters Scaled)
 HV2331
 HV2331_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ258177(NAD 83)
 HV2331
 HV2331                          SUPERSEDED SURVEY CONTROL
 HV2331
 HV2331  NGVD 29 (11/26/84)   87.090  (m)          285.73   (f) ADJUSTED    2 0
 HV2331
 HV2331.Superseded values are not recommended for survey control.
 HV2331
 HV2331.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2331.See file dsdata.pdf to determine how the superseded data were derived.
 HV2331
 HV2331_MARKER: DD = SURVEY DISK
 HV2331_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2331_STAMPING: 1640
 HV2331_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2331
 HV2331  HISTORY     - Date     Condition        Report By
 HV2331  HISTORY     - UNK      MONUMENTED       WSSC
 HV2331  HISTORY     - 1951     GOOD             CGS
 HV2331  HISTORY     - 19900406 MARK NOT FOUND   NGS
 HV2331
 HV2331                          STATION DESCRIPTION
 HV2331
 HV2331'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2331'0.9 MI E FROM SILVER SPRING.
 HV2331'ABOUT 0.9 MILE EAST ALONG STATE HIGHWAY 320 (SLIGO AVENUE) FROM
 HV2331'ITS JUNCTION WITH STATE HIGHWAY 97 (GEORGIA AVENUE) AT SILVER
 HV2331'SPRINGS, MONTGOMERY COUNTY, AT THE TRIANGLE IN THE INTERSECTION
 HV2331'OF SLIGO AVENUE AND PINEY BRANCH ROAD, NEARLY IN THE CENTER OF
 HV2331'THE TRIANGLE, AND 8.83 FEET WEST OF THE NORTH CORNER OF A CATCH
 HV2331'BASIN ON THE SOUTHEAST SIDE OF THE TRIANGLE.  A WASHINGTON
 HV2331'SUBURBAN SANITARY DISTRICT BRONZE DISK, STAMPED 1640 AND SET
 HV2331'ABOUT FLUSH WITH THE GROUND IN THE TOP OF A 2-INCH IRON PIPE.
 HV2331
 HV2331                          STATION RECOVERY (1990)
 HV2331
 HV2331'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV2331'A THOROUGH SEARCH OF THE DESCRIBED AREA REVEALED NO EVIDENCE OF THE
 HV2331'MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1198 ***********************************************************************
 HV1198  DESIGNATION -  1641 WSSC
 HV1198  PID         -  HV1198
 HV1198  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1198  COUNTRY     -  US
 HV1198  USGS QUAD   -  LANHAM (2016)
 HV1198
 HV1198                         *CURRENT SURVEY CONTROL
 HV1198  ______________________________________________________________________
 HV1198* NAD 83(1986) POSITION- 38 54 45.     (N) 076 50 17.     (W)   SCALED
 HV1198* NAVD 88 ORTHO HEIGHT -    54.90  (+/-2cm)      180.1   (feet) VERTCON3
 HV1198  ______________________________________________________________________
 HV1198  GEOID HEIGHT    -        -32.487 (meters)                     GEOID18
 HV1198  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1198
 HV1198.The horizontal coordinates were scaled from a map and have
 HV1198.an estimated accuracy of +/- 6 seconds.
 HV1198
 HV1198.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1198.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1198
 HV1198.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1198.GEOID18 height accuracy estimate available here.
 HV1198
 HV1198.The vertical order pertains to the NGVD 29 superseded value.
 HV1198
 HV1198.Click photographs - Photos may exist for this station.
 HV1198
 HV1198;                    North         East    Units  Estimated Accuracy
 HV1198;SPC MD       -   138,310.      414,050.      MT  (+/- 180 meters Scaled)
 HV1198
 HV1198_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ406086(NAD 83)
 HV1198
 HV1198                          SUPERSEDED SURVEY CONTROL
 HV1198
 HV1198  NGVD 29 (11/26/84)   55.141  (m)          180.91   (f) ADJUSTED    2 0
 HV1198
 HV1198.Superseded values are not recommended for survey control.
 HV1198
 HV1198.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1198.See file dsdata.pdf to determine how the superseded data were derived.
 HV1198
 HV1198_MARKER: DD = SURVEY DISK
 HV1198_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1198_STAMPING: 1641
 HV1198_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1198
 HV1198  HISTORY     - Date     Condition        Report By
 HV1198  HISTORY     - UNK      MONUMENTED       WSSC
 HV1198  HISTORY     - 1944     GOOD             WSSC
 HV1198
 HV1198                          STATION DESCRIPTION
 HV1198
 HV1198'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1198'1.1 MI SE FROM BRIGHTSEAT.
 HV1198'ON THE OLD LANDOVER-MARLBORO PIKE, ABOUT 1 MILE NORTHWEST OF
 HV1198'LARGO, AT THE NORTHEAST CORNER OF THE JUNCTION OF A COUNTY
 HV1198'ROAD LEADING NORTH, 20 FEET NORTH OF THE CONCRETE ROAD, AND
 HV1198'20 FEET EAST OF THE COUNTY ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2164 ***********************************************************************
 JV2164  DESIGNATION -  1642 WSSC
 JV2164  PID         -  JV2164
 JV2164  STATE/COUNTY-  MD/MONTGOMERY
 JV2164  COUNTRY     -  US
 JV2164  USGS QUAD   -  KENSINGTON (2016)
 JV2164
 JV2164                         *CURRENT SURVEY CONTROL
 JV2164  ______________________________________________________________________
 JV2164* NAD 83(1986) POSITION- 39 01 39.     (N) 077 04 20.     (W)   SCALED
 JV2164* NAVD 88 ORTHO HEIGHT -    93.292 (meters)      306.08  (feet) ADJUSTED
 JV2164  ______________________________________________________________________
 JV2164  GEOID HEIGHT    -        -31.880 (meters)                     GEOID18
 JV2164  DYNAMIC HEIGHT  -         93.242 (meters)      305.91  (feet) COMP
 JV2164  MODELED GRAVITY -    980,089.3   (mgal)                       NAVD 88
 JV2164
 JV2164  VERT ORDER      -  SECOND    CLASS 0
 JV2164
 JV2164.The horizontal coordinates were scaled from a map and have
 JV2164.an estimated accuracy of +/- 6 seconds.
 JV2164
 JV2164.The orthometric height was determined by differential leveling and
 JV2164.adjusted by the NATIONAL GEODETIC SURVEY
 JV2164.in June 1991.
 JV2164
 JV2164.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2164.GEOID18 height accuracy estimate available here.
 JV2164
 JV2164.Click photographs - Photos may exist for this station.
 JV2164
 JV2164.The dynamic height is computed by dividing the NAVD 88
 JV2164.geopotential number by the normal gravity value computed on the
 JV2164.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2164.degrees latitude (g = 980.6199 gals.).
 JV2164
 JV2164.The modeled gravity was interpolated from observed gravity values.
 JV2164
 JV2164;                    North         East    Units  Estimated Accuracy
 JV2164;SPC MD       -   151,060.      393,750.      MT  (+/- 180 meters Scaled)
 JV2164
 JV2164_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ206218(NAD 83)
 JV2164
 JV2164                          SUPERSEDED SURVEY CONTROL
 JV2164
 JV2164  NGVD 29 (11/26/84)   93.510  (m)          306.79   (f) ADJUSTED    2 0
 JV2164
 JV2164.Superseded values are not recommended for survey control.
 JV2164
 JV2164.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2164.See file dsdata.pdf to determine how the superseded data were derived.
 JV2164
 JV2164_MARKER: DD = SURVEY DISK
 JV2164_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV2164_STAMPING: 1642
 JV2164_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2164
 JV2164  HISTORY     - Date     Condition        Report By
 JV2164  HISTORY     - UNK      MONUMENTED       WSSC
 JV2164  HISTORY     - 1951     GOOD             CGS
 JV2164  HISTORY     - 1987     GOOD             USPSQD
 JV2164
 JV2164                          STATION DESCRIPTION
 JV2164
 JV2164'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2164'AT KENSINGTON.
 JV2164'AT KENSINGTON, MONTGOMERY COUNTY, IN THE NORTH ANGLE OF THE
 JV2164'INTERSECTION OF ST. PAUL STREET AND STATE HIGHWAY 192, IN THE
 JV2164'YARD OF A HOUSE FACING ON ST. PAUL STREET, 54 FEET NORTHWEST OF
 JV2164'THE CENTER LINE OF ST. PAUL STREET, 45 FEET NORTHEAST OF THE
 JV2164'CENTER LINE OF STATE HIGHWAY 192, 25.4 FEET SOUTHWEST OF A TREE,
 JV2164'14.5 FEET NORTHWEST OF A TREE, AND FLUSH WITH THE SURFACE OF
 JV2164'THE GROUND.  A WASHINGTON SURBURBAN SANITARY DISTRICT STANDARD
 JV2164'DISK, STAMPED 1642 AND SET IN THE TOP OF AN IRON PIPE.
 JV2164
 JV2164                          STATION RECOVERY (1987)
 JV2164
 JV2164'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2164'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7249 ***********************************************************************
 HV7249  DESIGNATION -  16422 WSSC 1970
 HV7249  PID         -  HV7249
 HV7249  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7249  COUNTRY     -  US
 HV7249  USGS QUAD   -  BOWIE (2016)
 HV7249
 HV7249                         *CURRENT SURVEY CONTROL
 HV7249  ______________________________________________________________________
 HV7249* NAD 83(1991) POSITION- 38 53 57.72608(N) 076 43 15.55281(W)   ADJUSTED
 HV7249* NAVD 88 ORTHO HEIGHT -    44.6   (meters)      146.    (feet) VERTCON3
 HV7249  ______________________________________________________________________
 HV7249  GEOID HEIGHT    -        -32.853 (meters)                     GEOID18
 HV7249  LAPLACE CORR    -         -5.89  (seconds)                    DEFLEC18
 HV7249  HORZ ORDER      -  SECOND
 HV7249
 HV7249.The horizontal coordinates were established by classical geodetic methods
 HV7249.and adjusted by the National Geodetic Survey in January 1992.
 HV7249
 HV7249.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7249.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7249
 HV7249.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7249.GEOID18 height accuracy estimate available here.
 HV7249
 HV7249.Click photographs - Photos may exist for this station.
 HV7249
 HV7249.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7249
 HV7249. The following values were computed from the NAD 83(1991) position.
 HV7249
 HV7249;                    North         East     Units Scale Factor Converg.
 HV7249;SPC MD       -   136,872.170   424,202.852   MT  0.99994993   +0 10 30.4
 HV7249;SPC MD       -   449,054.78  1,391,738.86   sFT  0.99994993   +0 10 30.4
 HV7249;UTM  18      - 4,307,017.171   350,761.071   MT  0.99987426   -1 04 51.2
 HV7249
 HV7249!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7249!SPC MD       -   0.99999816  x   0.99994993  =   0.99994809
 HV7249!UTM  18      -   0.99999816  x   0.99987426  =   0.99987242
 HV7249
 HV7249_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5076107017(NAD 83)
 HV7249
 HV7249                          SUPERSEDED SURVEY CONTROL
 HV7249
 HV7249  NAD 83(1986)-  38 53 57.72248(N)    076 43 15.56457(W) AD(       ) 2
 HV7249  NAD 27      -  38 53 57.31992(N)    076 43 16.68034(W) AD(       ) 2
 HV7249  NGVD 29 (07/19/86)   44.8    (m)          147.     (f) VERT ANG       
 HV7249
 HV7249.Superseded values are not recommended for survey control.
 HV7249
 HV7249.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7249.See file dsdata.pdf to determine how the superseded data were derived.
 HV7249
 HV7249_MARKER: DD = SURVEY DISK
 HV7249_SETTING: 0 = UNSPECIFIED SETTING
 HV7249_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7249
 HV7249  HISTORY     - Date     Condition        Report By
 HV7249  HISTORY     - 1969     MONUMENTED       WSSC
 HV7249
 HV7249                          STATION DESCRIPTION
 HV7249
 HV7249'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7249'THE STATION IS LOCATED ON THE WEST SIDE OF ROUTE 301 (SOUTHBOUND
 HV7249'LANE) AT THE NORTHWEST CORNER OF THE BRIDGE OVER ROUTE 214
 HV7249'(CENTRAL AVENUE).
 HV7249'
 HV7249'THE STATION MARK IS A BRASS DISK IN A CONCRETE WALK MARKED KID
 HV7249'1964 MD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7244 ***********************************************************************
 HV7244  DESIGNATION -  16423 WSSC 1970
 HV7244  PID         -  HV7244
 HV7244  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7244  COUNTRY     -  US
 HV7244  USGS QUAD   -  BOWIE (2016)
 HV7244
 HV7244                         *CURRENT SURVEY CONTROL
 HV7244  ______________________________________________________________________
 HV7244* NAD 83(1991) POSITION- 38 53 51.17417(N) 076 42 45.07004(W)   ADJUSTED
 HV7244* NAVD 88 ORTHO HEIGHT -    36.8   (meters)      121.    (feet) VERTCON3
 HV7244  ______________________________________________________________________
 HV7244  GEOID HEIGHT    -        -32.882 (meters)                     GEOID18
 HV7244  LAPLACE CORR    -         -6.05  (seconds)                    DEFLEC18
 HV7244  HORZ ORDER      -  SECOND
 HV7244
 HV7244.The horizontal coordinates were established by classical geodetic methods
 HV7244.and adjusted by the National Geodetic Survey in January 1992.
 HV7244
 HV7244.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7244.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7244
 HV7244.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7244.GEOID18 height accuracy estimate available here.
 HV7244
 HV7244.Click photographs - Photos may exist for this station.
 HV7244
 HV7244.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7244
 HV7244. The following values were computed from the NAD 83(1991) position.
 HV7244
 HV7244;                    North         East     Units Scale Factor Converg.
 HV7244;SPC MD       -   136,672.419   424,937.989   MT  0.99994992   +0 10 49.6
 HV7244;SPC MD       -   448,399.43  1,394,150.72   sFT  0.99994992   +0 10 49.6
 HV7244;UTM  18      - 4,306,801.370   351,491.597   MT  0.99987158   -1 04 31.9
 HV7244
 HV7244!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7244!SPC MD       -   0.99999939  x   0.99994992  =   0.99994931
 HV7244!UTM  18      -   0.99999939  x   0.99987158  =   0.99987097
 HV7244
 HV7244_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5149106801(NAD 83)
 HV7244
 HV7244                          SUPERSEDED SURVEY CONTROL
 HV7244
 HV7244  NAD 83(1986)-  38 53 51.17046(N)    076 42 45.08183(W) AD(       ) 2
 HV7244  NAD 27      -  38 53 50.76780(N)    076 42 46.19856(W) AD(       ) 2
 HV7244  NGVD 29 (07/19/86)   37.0    (m)          121.     (f) VERT ANG       
 HV7244
 HV7244.Superseded values are not recommended for survey control.
 HV7244
 HV7244.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7244.See file dsdata.pdf to determine how the superseded data were derived.
 HV7244
 HV7244_MARKER: DD = SURVEY DISK
 HV7244_SETTING: 0 = UNSPECIFIED SETTING
 HV7244_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7244
 HV7244  HISTORY     - Date     Condition        Report By
 HV7244  HISTORY     - 1969     MONUMENTED       WSSC
 HV7244  HISTORY     - 20020123 MARK NOT FOUND   USPSQD
 HV7244
 HV7244                          STATION DESCRIPTION
 HV7244
 HV7244'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7244'THE STATION IS LOCATED IN THE CENTERLINE OF ROUTE 214 (CENTRAL
 HV7244'AVENUE), .40 MILES EAST OF THE NORTHBOUND LANE OF ROUTE 301.
 HV7244'
 HV7244'THE STATION MARK IS A BRASS DISK STAMPED KID AZIMUTH MARKER.
 HV7244'STATION IS IN THE CENTERLINE OF A CONCRETE SPILLWAY.
 HV7244
 HV7244                          STATION RECOVERY (2002)
 HV7244
 HV7244'RECOVERY NOTE BY US POWER SQUADRON 2002 (WAY)
 HV7244'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7247 ***********************************************************************
 HV7247  DESIGNATION -  16426 WSSC 1970
 HV7247  PID         -  HV7247
 HV7247  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7247  COUNTRY     -  US
 HV7247  USGS QUAD   -  BOWIE (2016)
 HV7247
 HV7247                         *CURRENT SURVEY CONTROL
 HV7247  ______________________________________________________________________
 HV7247* NAD 83(1991) POSITION- 38 57 15.20705(N) 076 43 03.13031(W)   ADJUSTED
 HV7247* NAVD 88 ORTHO HEIGHT -    44.8   (meters)      147.    (feet) VERTCON3
 HV7247  ______________________________________________________________________
 HV7247  GEOID HEIGHT    -        -32.777 (meters)                     GEOID18
 HV7247  LAPLACE CORR    -         -6.05  (seconds)                    DEFLEC18
 HV7247  HORZ ORDER      -  SECOND
 HV7247
 HV7247.The horizontal coordinates were established by classical geodetic methods
 HV7247.and adjusted by the National Geodetic Survey in January 1992.
 HV7247
 HV7247.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7247.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7247
 HV7247.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7247.GEOID18 height accuracy estimate available here.
 HV7247
 HV7247.Click photographs - Photos may exist for this station.
 HV7247
 HV7247.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7247
 HV7247. The following values were computed from the NAD 83(1991) position.
 HV7247
 HV7247;                    North         East     Units Scale Factor Converg.
 HV7247;SPC MD       -   142,962.528   424,483.338   MT  0.99995078   +0 10 38.2
 HV7247;SPC MD       -   469,036.23  1,392,659.08   sFT  0.99995078   +0 10 38.2
 HV7247;UTM  18      - 4,313,099.446   351,175.026   MT  0.99987274   -1 04 48.0
 HV7247
 HV7247!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7247!SPC MD       -   0.99999812  x   0.99995078  =   0.99994890
 HV7247!UTM  18      -   0.99999812  x   0.99987274  =   0.99987086
 HV7247
 HV7247_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5117513099(NAD 83)
 HV7247
 HV7247                          SUPERSEDED SURVEY CONTROL
 HV7247
 HV7247  NAD 83(1986)-  38 57 15.20435(N)    076 43 03.14166(W) AD(       ) 2
 HV7247  NAD 27      -  38 57 14.80518(N)    076 43 04.25806(W) AD(       ) 2
 HV7247  NGVD 29 (07/19/86)   45.0    (m)          148.     (f) VERT ANG       
 HV7247
 HV7247.Superseded values are not recommended for survey control.
 HV7247
 HV7247.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7247.See file dsdata.pdf to determine how the superseded data were derived.
 HV7247
 HV7247_MARKER: DD = SURVEY DISK
 HV7247_SETTING: 0 = UNSPECIFIED SETTING
 HV7247_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7247
 HV7247  HISTORY     - Date     Condition        Report By
 HV7247  HISTORY     - 1969     MONUMENTED       WSSC
 HV7247
 HV7247                          STATION DESCRIPTION
 HV7247
 HV7247'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7247'THE STATION IS LOCATED ON THE SOUTH SIDE OF ROUTE 50 (JOHN HANSON
 HV7247'HIGHWAY) AT THE SOUTHWEST CORNER OF THE BRIDGE OVER ROUTE 301.
 HV7247'
 HV7247'THE STATION MARK IS A BRASS DISK MARKED RIPS 1962.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7252 ***********************************************************************
 HV7252  DESIGNATION -  16427 WSSC 1970
 HV7252  PID         -  HV7252
 HV7252  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7252  COUNTRY     -  US
 HV7252  USGS QUAD   -  BOWIE (2016)
 HV7252
 HV7252                         *CURRENT SURVEY CONTROL
 HV7252  ______________________________________________________________________
 HV7252* NAD 83(1991) POSITION- 38 57 09.98079(N) 076 44 24.62194(W)   ADJUSTED
 HV7252* NAVD 88 ORTHO HEIGHT -    56.4   (meters)      185.    (feet) VERTCON3
 HV7252  ______________________________________________________________________
 HV7252  GEOID HEIGHT    -        -32.710 (meters)                     GEOID18
 HV7252  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 HV7252  HORZ ORDER      -  SECOND
 HV7252
 HV7252.The horizontal coordinates were established by classical geodetic methods
 HV7252.and adjusted by the National Geodetic Survey in January 1992.
 HV7252
 HV7252.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7252.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7252
 HV7252.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7252.GEOID18 height accuracy estimate available here.
 HV7252
 HV7252.Click photographs - Photos may exist for this station.
 HV7252
 HV7252.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7252
 HV7252. The following values were computed from the NAD 83(1991) position.
 HV7252
 HV7252;                    North         East     Units Scale Factor Converg.
 HV7252;SPC MD       -   142,795.545   422,521.715   MT  0.99995075   +0 09 47.1
 HV7252;SPC MD       -   468,488.38  1,386,223.33   sFT  0.99995075   +0 09 47.1
 HV7252;UTM  18      - 4,312,975.554   349,210.357   MT  0.99987998   -1 05 39.2
 HV7252
 HV7252!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7252!SPC MD       -   0.99999629  x   0.99995075  =   0.99994704
 HV7252!UTM  18      -   0.99999629  x   0.99987998  =   0.99987627
 HV7252
 HV7252:                Primary Azimuth Mark                     Grid Az
 HV7252:SPC MD       -  WORTH                                    034 24 49.0
 HV7252:UTM  18      -  WORTH                                    035 40 15.3
 HV7252
 HV7252_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4921012975(NAD 83)
 HV7252
 HV7252|---------------------------------------------------------------------|
 HV7252| PID    Reference Object                     Distance      Geod. Az  |
 HV7252|                                                           dddmmss.s |
 HV7252| HV7238 WORTH                               APPROX. 0.9 KM 0343436.1 |
 HV7252| HV7240 BOWIE BELAIR WSSC TANK              APPROX. 2.3 KM 3564521.1 |
 HV7252|---------------------------------------------------------------------|
 HV7252
 HV7252                          SUPERSEDED SURVEY CONTROL
 HV7252
 HV7252  NAD 83(1986)-  38 57 09.97824(N)    076 44 24.63330(W) AD(       ) 2
 HV7252  NAD 27      -  38 57 09.57891(N)    076 44 25.74713(W) AD(       ) 2
 HV7252  NGVD 29 (07/19/86)   56.6    (m)          186.     (f) VERT ANG       
 HV7252
 HV7252.Superseded values are not recommended for survey control.
 HV7252
 HV7252.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7252.See file dsdata.pdf to determine how the superseded data were derived.
 HV7252
 HV7252_MARKER: DD = SURVEY DISK
 HV7252_SETTING: 0 = UNSPECIFIED SETTING
 HV7252_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7252
 HV7252  HISTORY     - Date     Condition        Report By
 HV7252  HISTORY     - 1969     MONUMENTED       WSSC
 HV7252
 HV7252                          STATION DESCRIPTION
 HV7252
 HV7252'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7252'*THE STATION IS LOCATED ON THE WEST SIDE OF ROUTE 197 ON THE
 HV7252'SOUTHWEST CORNER OF THE BRIDGE OVER ROUTE 50 (JOHN HANSON HIGHWAY).
 HV7252'
 HV7252'THE STATION MARK IS A BRASS DISK STAMPED BERLIN 1962.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1411 ***********************************************************************
 JV1411  DESIGNATION -  1643 WSSC
 JV1411  PID         -  JV1411
 JV1411  STATE/COUNTY-  MD/MONTGOMERY
 JV1411  COUNTRY     -  US
 JV1411  USGS QUAD   -  BELTSVILLE (2016)
 JV1411
 JV1411                         *CURRENT SURVEY CONTROL
 JV1411  ______________________________________________________________________
 JV1411* NAD 83(1986) POSITION- 39 02 08.     (N) 076 59 20.     (W)   SCALED
 JV1411* NAVD 88 ORTHO HEIGHT -   115.25  (+/-2cm)      378.1   (feet) VERTCON3
 JV1411  ______________________________________________________________________
 JV1411  GEOID HEIGHT    -        -32.006 (meters)                     GEOID18
 JV1411  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1411
 JV1411.The horizontal coordinates were scaled from a map and have
 JV1411.an estimated accuracy of +/- 6 seconds.
 JV1411
 JV1411.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1411.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1411
 JV1411.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1411.GEOID18 height accuracy estimate available here.
 JV1411
 JV1411.The vertical order pertains to the NGVD 29 superseded value.
 JV1411
 JV1411.Click photographs - Photos may exist for this station.
 JV1411
 JV1411;                    North         East    Units  Estimated Accuracy
 JV1411;SPC MD       -   151,950.      400,960.      MT  (+/- 180 meters Scaled)
 JV1411
 JV1411_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ278226(NAD 83)
 JV1411
 JV1411                          SUPERSEDED SURVEY CONTROL
 JV1411
 JV1411  NGVD 29 (11/26/84)  115.470  (m)          378.84   (f) ADJUSTED    2 0
 JV1411
 JV1411.Superseded values are not recommended for survey control.
 JV1411
 JV1411.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1411.See file dsdata.pdf to determine how the superseded data were derived.
 JV1411
 JV1411_MARKER: DD = SURVEY DISK
 JV1411_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1411_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1411
 JV1411  HISTORY     - Date     Condition        Report By
 JV1411  HISTORY     - UNK      MONUMENTED       WSSC
 JV1411  HISTORY     - 1952     MARK NOT FOUND   CGS
 JV1411
 JV1411                          STATION DESCRIPTION
 JV1411
 JV1411'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV1411'AT WHITEOAK.
 JV1411'0.3 MILE SOUTH ALONG NEW HAMPSHIRE AVENUE (STATE HIGHWAY 320)
 JV1411'FROM THE JUNCTION OF COLESVILLE ROAD (U.S. HIGHWAY 29), AT
 JV1411'WHITEOAK, MONTGOMERY COUNTY, AT A ROAD INTERSECTION, IN THE
 JV1411'SOUTHEAST ANGLE, ABOUT 50 FEET SOUTH OF THE ROAD TO BURNT MILLS
 JV1411'HILLS, 84.1 FEET SOUTHEAST ACROSS THE AVENUE FROM C AND P TELEPHONE
 JV1411'POLE 12 G, 119.1 FEET NORTH OF C AND P TELEPHONE POLE 13, AND
 JV1411'31.3 FEET SOUTH OF C AND P TELEPHONE POLE 12.  A WASHINGTON
 JV1411'SUBURBAN SANITARY DISTRICT BRONZE DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7479 ***********************************************************************
 HV7479  DESIGNATION -  16430 WSSC 1970
 HV7479  PID         -  HV7479
 HV7479  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7479  COUNTRY     -  US
 HV7479  USGS QUAD   -  LANHAM (2016)
 HV7479
 HV7479                         *CURRENT SURVEY CONTROL
 HV7479  ______________________________________________________________________
 HV7479* NAD 83(1991) POSITION- 38 56 42.10080(N) 076 46 12.45540(W)   ADJUSTED
 HV7479* NAVD 88 ORTHO HEIGHT -    54.1   (meters)      177.    (feet) VERTCON3
 HV7479  ______________________________________________________________________
 HV7479  GEOID HEIGHT    -        -32.633 (meters)                     GEOID18
 HV7479  LAPLACE CORR    -         -5.58  (seconds)                    DEFLEC18
 HV7479  HORZ ORDER      -  SECOND
 HV7479
 HV7479.The horizontal coordinates were established by classical geodetic methods
 HV7479.and adjusted by the National Geodetic Survey in January 1992.
 HV7479
 HV7479.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7479.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7479
 HV7479.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7479.GEOID18 height accuracy estimate available here.
 HV7479
 HV7479.Click photographs - Photos may exist for this station.
 HV7479
 HV7479.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7479
 HV7479. The following values were computed from the NAD 83(1991) position.
 HV7479
 HV7479;                    North         East     Units Scale Factor Converg.
 HV7479;SPC MD       -   141,928.881   419,927.508   MT  0.99995058   +0 08 39.4
 HV7479;SPC MD       -   465,645.00  1,377,712.17   sFT  0.99995058   +0 08 39.4
 HV7479;UTM  18      - 4,312,166.071   346,597.931   MT  0.99988977   -1 06 46.3
 HV7479
 HV7479!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7479!SPC MD       -   0.99999664  x   0.99995058  =   0.99994722
 HV7479!UTM  18      -   0.99999664  x   0.99988977  =   0.99988641
 HV7479
 HV7479:                Primary Azimuth Mark                     Grid Az
 HV7479:SPC MD       -  CHURCH                                   168 30 09.9
 HV7479:UTM  18      -  CHURCH                                   169 45 35.6
 HV7479
 HV7479_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4659712166(NAD 83)
 HV7479
 HV7479|---------------------------------------------------------------------|
 HV7479| PID    Reference Object                     Distance      Geod. Az  |
 HV7479|                                                           dddmmss.s |
 HV7479| HV7461 CHURCH                              APPROX. 1.8 KM 1683849.3 |
 HV7479| HV7481 17495 WSSC 1970                     413.589 METERS 2681938.4 |
 HV7479|---------------------------------------------------------------------|
 HV7479
 HV7479                          SUPERSEDED SURVEY CONTROL
 HV7479
 HV7479  NAD 83(1986)-  38 56 42.09825(N)    076 46 12.46693(W) AD(       ) 2
 HV7479  NAD 27      -  38 56 41.69855(N)    076 46 13.57752(W) AD(       ) 2
 HV7479  NGVD 29 (07/19/86)   54.3    (m)          178.     (f) VERT ANG       
 HV7479
 HV7479.Superseded values are not recommended for survey control.
 HV7479
 HV7479.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7479.See file dsdata.pdf to determine how the superseded data were derived.
 HV7479
 HV7479_MARKER: DD = SURVEY DISK
 HV7479_SETTING: 0 = UNSPECIFIED SETTING
 HV7479_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7479
 HV7479  HISTORY     - Date     Condition        Report By
 HV7479  HISTORY     - 1969     MONUMENTED       WSSC
 HV7479  HISTORY     - 19960911 MARK NOT FOUND   USPSQD
 HV7479
 HV7479                          STATION DESCRIPTION
 HV7479
 HV7479'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7479'THE STATION IS LOCATED ON THE SOUTHWEST CORNER OF THE BRIDGE
 HV7479'ON CHURCH ROAD, OVER ROUTE 50 (JOHN HANSON HIGHWAY) IN A CONCRETE
 HV7479'WALK.
 HV7479'
 HV7479'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 214 (CENTRAL
 HV7479'AVENUE) AND CHURCH ROAD, GO NORTH ON CHURCH ROAD FOR 3.0 MILES
 HV7479'TO THE BRIDGE OVER ROUTE 50 AND THE STATION IS ON THE LEFT.
 HV7479'
 HV7479'THE STATION MARK IS A BRASS DISK STAMPED MBCS DEACON AZ. MARK 1963.
 HV7479
 HV7479                          STATION RECOVERY (1996)
 HV7479
 HV7479'RECOVERY NOTE BY US POWER SQUADRON 1996
 HV7479'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7248 ***********************************************************************
 HV7248  DESIGNATION -  16438 WSSC 1970
 HV7248  PID         -  HV7248
 HV7248  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7248  COUNTRY     -  US
 HV7248  USGS QUAD   -  BOWIE (2016)
 HV7248
 HV7248                         *CURRENT SURVEY CONTROL
 HV7248  ______________________________________________________________________
 HV7248* NAD 83(1991) POSITION- 38 53 55.22063(N) 076 43 05.55179(W)   ADJUSTED
 HV7248* NAVD 88 ORTHO HEIGHT -    39.1   (meters)      128.    (feet) VERTCON3
 HV7248  ______________________________________________________________________
 HV7248  GEOID HEIGHT    -        -32.862 (meters)                     GEOID18
 HV7248  LAPLACE CORR    -         -5.93  (seconds)                    DEFLEC18
 HV7248  HORZ ORDER      -  SECOND
 HV7248
 HV7248.The horizontal coordinates were established by classical geodetic methods
 HV7248.and adjusted by the National Geodetic Survey in January 1992.
 HV7248
 HV7248.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7248.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7248
 HV7248.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7248.GEOID18 height accuracy estimate available here.
 HV7248
 HV7248.Click photographs - Photos may exist for this station.
 HV7248
 HV7248.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7248
 HV7248. The following values were computed from the NAD 83(1991) position.
 HV7248
 HV7248;                    North         East     Units Scale Factor Converg.
 HV7248;SPC MD       -   136,795.654   424,444.071   MT  0.99994993   +0 10 36.7
 HV7248;SPC MD       -   448,803.74  1,392,530.26   sFT  0.99994993   +0 10 36.7
 HV7248;UTM  18      - 4,306,935.392   351,000.537   MT  0.99987338   -1 04 44.9
 HV7248
 HV7248!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7248!SPC MD       -   0.99999903  x   0.99994993  =   0.99994896
 HV7248!UTM  18      -   0.99999903  x   0.99987338  =   0.99987241
 HV7248
 HV7248:                Primary Azimuth Mark                     Grid Az
 HV7248:SPC MD       -  HARRISON 2                               182 46 33.8
 HV7248:UTM  18      -  HARRISON 2                               184 01 55.4
 HV7248
 HV7248_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5100006935(NAD 83)
 HV7248
 HV7248|---------------------------------------------------------------------|
 HV7248| PID    Reference Object                     Distance      Geod. Az  |
 HV7248|                                                           dddmmss.s |
 HV7248| HV7237 HARRISON 2                          APPROX. 1.0 KM 1825710.5 |
 HV7248| HV7249 16422 WSSC 1970                     253.077 METERS 28747     |
 HV7248|---------------------------------------------------------------------|
 HV7248
 HV7248                          SUPERSEDED SURVEY CONTROL
 HV7248
 HV7248  NAD 83(1986)-  38 53 55.21698(N)    076 43 05.56356(W) AD(       ) 2
 HV7248  NAD 27      -  38 53 54.81439(N)    076 43 06.67964(W) AD(       ) 2
 HV7248  NGVD 29 (07/19/86)   39.3    (m)          129.     (f) VERT ANG       
 HV7248
 HV7248.Superseded values are not recommended for survey control.
 HV7248
 HV7248.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7248.See file dsdata.pdf to determine how the superseded data were derived.
 HV7248
 HV7248_MARKER: B = BOLT
 HV7248_SETTING: 0 = UNSPECIFIED SETTING
 HV7248_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7248
 HV7248  HISTORY     - Date     Condition        Report By
 HV7248  HISTORY     - 1969     MONUMENTED       WSSC
 HV7248
 HV7248                          STATION DESCRIPTION
 HV7248
 HV7248'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7248'THE STATION IS LOCATED ON THE NORTH SIDE OF ROUTE 214 (CENTRAL
 HV7248'AVENUE) ON THE NORTHWEST CORNER OF THE BRIDGE OVER ROUTE 301 IN
 HV7248'THE NORTHBOUND LANE.
 HV7248'
 HV7248'THE STATION MARK IS A BRASS BOLT SET FLUSH WITH THE WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2327 ***********************************************************************
 HV2327  DESIGNATION -  1645 WSSC
 HV2327  PID         -  HV2327
 HV2327  STATE/COUNTY-  MD/MONTGOMERY
 HV2327  COUNTRY     -  US
 HV2327  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2327
 HV2327                         *CURRENT SURVEY CONTROL
 HV2327  ______________________________________________________________________
 HV2327* NAD 83(1986) POSITION- 38 59 54.     (N) 077 00 13.     (W)   SCALED
 HV2327* NAVD 88 ORTHO HEIGHT -    83.771 (meters)      274.84  (feet) ADJUSTED
 HV2327  ______________________________________________________________________
 HV2327  GEOID HEIGHT    -        -32.005 (meters)                     GEOID18
 HV2327  DYNAMIC HEIGHT  -         83.726 (meters)      274.69  (feet) COMP
 HV2327  MODELED GRAVITY -    980,090.0   (mgal)                       NAVD 88
 HV2327
 HV2327  VERT ORDER      -  SECOND    CLASS 0
 HV2327
 HV2327.The horizontal coordinates were scaled from a map and have
 HV2327.an estimated accuracy of +/- 6 seconds.
 HV2327
 HV2327.The orthometric height was determined by differential leveling and
 HV2327.adjusted by the NATIONAL GEODETIC SURVEY
 HV2327.in June 1991.
 HV2327
 HV2327.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2327.GEOID18 height accuracy estimate available here.
 HV2327
 HV2327.Click photographs - Photos may exist for this station.
 HV2327
 HV2327.The dynamic height is computed by dividing the NAVD 88
 HV2327.geopotential number by the normal gravity value computed on the
 HV2327.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2327.degrees latitude (g = 980.6199 gals.).
 HV2327
 HV2327.The modeled gravity was interpolated from observed gravity values.
 HV2327
 HV2327;                    North         East    Units  Estimated Accuracy
 HV2327;SPC MD       -   147,820.      399,690.      MT  (+/- 180 meters Scaled)
 HV2327
 HV2327_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ264185(NAD 83)
 HV2327
 HV2327                          SUPERSEDED SURVEY CONTROL
 HV2327
 HV2327  NGVD 29 (11/26/84)   83.989  (m)          275.55   (f) ADJUSTED    2 0
 HV2327
 HV2327.Superseded values are not recommended for survey control.
 HV2327
 HV2327.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2327.See file dsdata.pdf to determine how the superseded data were derived.
 HV2327
 HV2327_MARKER: DD = SURVEY DISK
 HV2327_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2327_STAMPING: 1645
 HV2327_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2327
 HV2327  HISTORY     - Date     Condition        Report By
 HV2327  HISTORY     - UNK      MONUMENTED       WSSC
 HV2327  HISTORY     - 1951     GOOD             CGS
 HV2327
 HV2327                          STATION DESCRIPTION
 HV2327
 HV2327'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2327'1.5 MI E FROM SILVER SPRING.
 HV2327'ABOUT 1.5 MILES EASTWARD ALONG STATE HIGHWAY 320 FROM THE JUNCTION
 HV2327'WITH STATE HIGHWAY 97 AT SILVER SPRING, MONTGOMERY COUNTY, AT THE
 HV2327'INTERSECTION OF STATE HIGHWAY 320 AND FLOWER AVENUE (STATE
 HV2327'HIGHWAY 194), IN THE NORTHEAST ANGLE OF THE INTERSECTION, IN FRONT
 HV2327'OF A WHELAN DRUG STORE, IN THE GUTTER ON THE EAST SIDE OF FLOWER
 HV2327'AVENUE, 5.8 FEET FROM THE CORNER OF A CATCH BASIN, AND AGAINST THE
 HV2327'FACE OF THE CURB.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV2327'BRONZE DISK, STAMPED 1645 AND SET IN THE TOP OF A 2-INCH IRON
 HV2327'PIPE, WITH THE CONCRETE CURB AND GUTTER CAST AROUND IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2783 ***********************************************************************
 JV2783  DESIGNATION -  1646 WSSC
 JV2783  PID         -  JV2783
 JV2783  STATE/COUNTY-  MD/MONTGOMERY
 JV2783  COUNTRY     -  US
 JV2783  USGS QUAD   -  KENSINGTON (2016)
 JV2783
 JV2783                         *CURRENT SURVEY CONTROL
 JV2783  ______________________________________________________________________
 JV2783* NAD 83(1986) POSITION- 39 01 05.     (N) 077 02 39.     (W)   SCALED
 JV2783* NAVD 88 ORTHO HEIGHT -   112.84  (+/-2cm)      370.2   (feet) VERTCON3
 JV2783  ______________________________________________________________________
 JV2783  GEOID HEIGHT    -        -31.929 (meters)                     GEOID18
 JV2783  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2783
 JV2783.The horizontal coordinates were scaled from a map and have
 JV2783.an estimated accuracy of +/- 6 seconds.
 JV2783
 JV2783.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2783.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2783
 JV2783.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2783.GEOID18 height accuracy estimate available here.
 JV2783
 JV2783.The vertical order pertains to the NGVD 29 superseded value.
 JV2783
 JV2783.Click photographs - Photos may exist for this station.
 JV2783
 JV2783;                    North         East    Units  Estimated Accuracy
 JV2783;SPC MD       -   150,010.      396,180.      MT  (+/- 180 meters Scaled)
 JV2783
 JV2783_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ230207(NAD 83)
 JV2783
 JV2783                          SUPERSEDED SURVEY CONTROL
 JV2783
 JV2783  NGVD 29 (11/26/84)  113.053  (m)          370.91   (f) ADJUSTED    2 0
 JV2783
 JV2783.Superseded values are not recommended for survey control.
 JV2783
 JV2783.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2783.See file dsdata.pdf to determine how the superseded data were derived.
 JV2783
 JV2783_MARKER: DD = SURVEY DISK
 JV2783_SETTING: 0 = UNSPECIFIED SETTING
 JV2783_SP_SET: IRON PIPE
 JV2783_STAMPING: 1646
 JV2783_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2783
 JV2783  HISTORY     - Date     Condition        Report By
 JV2783  HISTORY     - UNK      MONUMENTED       WSSC
 JV2783  HISTORY     - 1939     GOOD             WSSC
 JV2783
 JV2783                          STATION DESCRIPTION
 JV2783
 JV2783'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2783'1.8 MI S FROM WHEATON.
 JV2783'ON GEORGIA AVENUE (STATE HIGHWAY 97), 0.2 MILE NORTH OF THE
 JV2783'INTERSECTION OF FOREST GLEN ROAD, AT THE JUNCTION OF A PRIVATE
 JV2783'ROAD LEADING WEST TO GREEN ACRES SCHOOL, 102.8 FEET WEST OF THE
 JV2783'CENTERLINE OF GEORGIA AVENUE, AND 9.1 FEET SOUTH OF THE CENTERLINE
 JV2783'OF THE PRIVATE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1091 ***********************************************************************
 JV1091  DESIGNATION -  1647
 JV1091  PID         -  JV1091
 JV1091  STATE/COUNTY-  MD/HOWARD
 JV1091  COUNTRY     -  US
 JV1091  USGS QUAD   -  CLARKSVILLE (2016)
 JV1091
 JV1091                         *CURRENT SURVEY CONTROL
 JV1091  ______________________________________________________________________
 JV1091* NAD 83(1986) POSITION- 39 11 34.7    (N) 076 58 30.9    (W)   HD_HELD2
 JV1091* NAVD 88 ORTHO HEIGHT -   162.48  (+/-2cm)      533.1   (feet) VERTCON3
 JV1091  ______________________________________________________________________
 JV1091  GEOID HEIGHT    -        -31.968 (meters)                     GEOID18
 JV1091  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1091
 JV1091.The horizontal coordinates were established by autonomous hand held GPS
 JV1091.observations and have an estimated accuracy of +/- 10 meters.
 JV1091
 JV1091.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1091.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1091
 JV1091.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1091.GEOID18 height accuracy estimate available here.
 JV1091
 JV1091.The vertical order pertains to the NGVD 29 superseded value.
 JV1091
 JV1091.Click photographs - Photos may exist for this station.
 JV1091
 JV1091;                    North         East    Units  Estimated Accuracy
 JV1091;SPC MD       -   169,429.      402,138.      MT  (+/- 10 meters HH2 GPS)
 JV1091
 JV1091_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2941840049(NAD 83)
 JV1091
 JV1091                          SUPERSEDED SURVEY CONTROL
 JV1091
 JV1091  NGVD 29 (11/26/84)  162.700  (m)          533.79   (f) ADJUSTED    2 0
 JV1091
 JV1091.Superseded values are not recommended for survey control.
 JV1091
 JV1091.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1091.See file dsdata.pdf to determine how the superseded data were derived.
 JV1091
 JV1091_MARKER: DD = SURVEY DISK
 JV1091_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1091_SP_SET: IRON PIPE
 JV1091_STAMPING: 1647
 JV1091_PROJECTION: RECESSED 3 CENTIMETERS
 JV1091_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1091+STABILITY: SURFACE MOTION
 JV1091
 JV1091  HISTORY     - Date     Condition        Report By
 JV1091  HISTORY     - UNK      MONUMENTED       WSSC
 JV1091  HISTORY     - 1939     GOOD             WSSC
 JV1091  HISTORY     - 20201113 GOOD             PROFLN
 JV1091
 JV1091                          STATION DESCRIPTION
 JV1091
 JV1091'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1091'1.4 MI NW FROM HIGHLAND.
 JV1091'ABOUT 1.4 MILES NORTHWEST ALONG THE HIGHLAND-DAYTON ROAD FROM THE
 JV1091'INTERSECTION OF THE ASHTON-CLARKSVILLE ROAD AT HIGHLAND, HOWARD
 JV1091'COUNTY, AT THE JUNCTION OF THE MINK HOLLOW ROAD, IN THE LAWN
 JV1091'OF THE ARTHUR PICKETT FARM, 40 FEET NORTHEAST OF THE CENTER LINE
 JV1091'OF THE HIGHLAND-DAYTON ROAD, 14.5 FEET NORTHWEST OF THE CENTER
 JV1091'LINE OF A PRIVATE DRIVE, AND 26.1 FEET WEST OF A 30-INCH LOCUST
 JV1091'TREE.  A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK,
 JV1091'STAMPED 1647 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1091
 JV1091                          STATION RECOVERY (2020)
 JV1091
 JV1091'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV1091'THE MARK IS ABOUT 75 FT (22.9 M) NORTHWEST ALONG HIGHLAND RD (HWY 216)
 JV1091'FROM THE JUNCTION OF MINK HOLLOW ROAD.  IT IS 52 FT (15.8 M) SOUTHEAST
 JV1091'OF A MAILBOX - HI-LAND FARM - 49 FT (14.9 M) SOUTH-SOUTHWEST OF A BIG
 JV1091'HORSE STATUE, 42.5 FT (13.0 M) NORTHEAST OF HIGHLAND ROAD, 15.5 FT
 JV1091'(4.7 M) NORTHWEST OF AN ASPHALT DRIVEWAY, 0.1 FT (3 CM) BELOW GROUND
 JV1091'AND BELOW THE 6 INCH (15 CM) TOP OF A VALVE BOX PLACED AROUND THE MARK
 JV1091'THIS DATE.  IT IS ABOUT 0.5 FT (15 CM) LOWER THAN THE ROAD AND
 JV1091'DRIVEWAY.  THE CONCRETE POST APPEARED TO BE LEANING SLIGHTLY BUT WAS
 JV1091'ROCK SOLID.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5979 ***********************************************************************
 JV5979  DESIGNATION -  16470 WSSC 1969
 JV5979  PID         -  JV5979
 JV5979  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5979  COUNTRY     -  US
 JV5979  USGS QUAD   -  BELTSVILLE (2016)
 JV5979
 JV5979                         *CURRENT SURVEY CONTROL
 JV5979  ______________________________________________________________________
 JV5979* NAD 83(1991) POSITION- 39 04 31.94001(N) 076 55 16.12223(W)   ADJUSTED
 JV5979* NAVD 88 ORTHO HEIGHT -    96.8   (meters)      318.    (feet) VERTCON3
 JV5979  ______________________________________________________________________
 JV5979  GEOID HEIGHT    -        -32.107 (meters)                     GEOID18
 JV5979  LAPLACE CORR    -         -3.75  (seconds)                    DEFLEC18
 JV5979  HORZ ORDER      -  SECOND
 JV5979
 JV5979.The horizontal coordinates were established by classical geodetic methods
 JV5979.and adjusted by the National Geodetic Survey in January 1992.
 JV5979
 JV5979.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5979.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5979
 JV5979.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5979.GEOID18 height accuracy estimate available here.
 JV5979
 JV5979.Click photographs - Photos may exist for this station.
 JV5979
 JV5979.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5979
 JV5979. The following values were computed from the NAD 83(1991) position.
 JV5979
 JV5979;                    North         East     Units Scale Factor Converg.
 JV5979;SPC MD       -   156,394.809   406,823.349   MT  0.99995591   +0 02 58.2
 JV5979;SPC MD       -   513,105.30  1,334,719.60   sFT  0.99995591   +0 02 58.2
 JV5979;UTM  18      - 4,326,915.846   333,815.244   MT  0.99994007   -1 12 40.5
 JV5979
 JV5979!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5979!SPC MD       -   0.99998985  x   0.99995591  =   0.99994576
 JV5979!UTM  18      -   0.99998985  x   0.99994007  =   0.99992992
 JV5979
 JV5979_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3381526915(NAD 83)
 JV5979
 JV5979                          SUPERSEDED SURVEY CONTROL
 JV5979
 JV5979  NAD 83(1986)-  39 04 31.93895(N)    076 55 16.13246(W) AD(       ) 2
 JV5979  NAD 27      -  39 04 31.54722(N)    076 55 17.22583(W) AD(       ) 2
 JV5979  NGVD 29 (07/19/86)   97.0    (m)          318.     (f) VERT ANG       
 JV5979
 JV5979.Superseded values are not recommended for survey control.
 JV5979
 JV5979.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5979.See file dsdata.pdf to determine how the superseded data were derived.
 JV5979
 JV5979_MARKER: S = SPIKE
 JV5979_SETTING: 0 = UNSPECIFIED SETTING
 JV5979_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5979
 JV5979  HISTORY     - Date     Condition        Report By
 JV5979  HISTORY     - 1969     MONUMENTED       WSSC
 JV5979
 JV5979                          STATION DESCRIPTION
 JV5979
 JV5979'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5979'THE STATION IS ABOUT 1-1/2 MILES NORTHEAST OF CALVERTON AND
 JV5979'2-1/2 MILES SOUTHEAST OF BURTONSVILLE.
 JV5979'
 JV5979'THE STATION IS LOCATED IN THE CENTERLINE OF GREENCASTLE ROAD
 JV5979'ABOUT 25 FEET SOUTH OF GUNPOWDER ROAD.
 JV5979'
 JV5979'THE STATION MARK IS A RAILROAD SPIKE FLUSH WITH THE SURFACE.  IT
 JV5979'IS 47.41 FEET SOUTHEAST OF AN 18-INCH PINE, 54.93 FEET NORTHEAST
 JV5979'OF A POWER LINE POLE, 51.18 FEET NORTH OF G AND E POLE 299340,
 JV5979'AND 20.02 FEET NORTHWEST OF THE CENTERLINE OF A WATER VALVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1220 ***********************************************************************
 HV1220  DESIGNATION -  1648 WSSC
 HV1220  PID         -  HV1220
 HV1220  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1220  COUNTRY     -  US
 HV1220  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1220
 HV1220                         *CURRENT SURVEY CONTROL
 HV1220  ______________________________________________________________________
 HV1220* NAD 83(1986) POSITION- 38 53 10.     (N) 076 54 14.     (W)   SCALED
 HV1220* NAVD 88 ORTHO HEIGHT -    44.67  (+/-2cm)      146.6   (feet) VERTCON3
 HV1220  ______________________________________________________________________
 HV1220  GEOID HEIGHT    -        -32.352 (meters)                     GEOID18
 HV1220  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1220
 HV1220.The horizontal coordinates were scaled from a map and have
 HV1220.an estimated accuracy of +/- 6 seconds.
 HV1220
 HV1220.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1220.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1220
 HV1220.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1220.GEOID18 height accuracy estimate available here.
 HV1220
 HV1220.The vertical order pertains to the NGVD 29 superseded value.
 HV1220
 HV1220.Click photographs - Photos may exist for this station.
 HV1220
 HV1220;                    North         East    Units  Estimated Accuracy
 HV1220;SPC MD       -   135,370.      408,340.      MT  (+/- 180 meters Scaled)
 HV1220
 HV1220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ348058(NAD 83)
 HV1220
 HV1220                          SUPERSEDED SURVEY CONTROL
 HV1220
 HV1220  NGVD 29 (11/26/84)   44.908  (m)          147.34   (f) ADJUSTED    2 0
 HV1220
 HV1220.Superseded values are not recommended for survey control.
 HV1220
 HV1220.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1220.See file dsdata.pdf to determine how the superseded data were derived.
 HV1220
 HV1220_MARKER: DD = SURVEY DISK
 HV1220_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1220_STAMPING: 1648
 HV1220_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1220
 HV1220  HISTORY     - Date     Condition        Report By
 HV1220  HISTORY     - UNK      MONUMENTED       WSSC
 HV1220  HISTORY     - 1944     GOOD             WSSC
 HV1220
 HV1220                          STATION DESCRIPTION
 HV1220
 HV1220'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1220'AT SEAT PLEASANT.
 HV1220'ON CENTRAL AVENUE, ABOUT 100 FEET WEST OF THE INTERSECTION OF
 HV1220'ROLLINS AVENUE, ON THE NORTH SIDE OF THE ROAD, ON THE WEST SIDE
 HV1220'OF A BRICK BUNGALOW, 33.7 FEET SOUTHWEST OF THE NORTHWEST CORNER
 HV1220'OF THE HOUSE, 3 FEET EAST OF THE FENCE, AND IN THE LAWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0669 ***********************************************************************
 HV0669  DESIGNATION -  165.1 USGS
 HV0669  PID         -  HV0669
 HV0669  STATE/COUNTY-  MD/ST MARYS
 HV0669  COUNTRY     -  US
 HV0669  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0669
 HV0669                         *CURRENT SURVEY CONTROL
 HV0669  ______________________________________________________________________
 HV0669* NAD 83(1986) POSITION- 38 29 12.     (N) 076 46 44.     (W)   SCALED
 HV0669* NAVD 88 ORTHO HEIGHT -    50.020 (meters)      164.11  (feet) ADJUSTED
 HV0669  ______________________________________________________________________
 HV0669  GEOID HEIGHT    -        -33.547 (meters)                     GEOID18
 HV0669  DYNAMIC HEIGHT  -         49.989 (meters)      164.01  (feet) COMP
 HV0669  MODELED GRAVITY -    980,018.1   (mgal)                       NAVD 88
 HV0669
 HV0669  VERT ORDER      -  FIRST     CLASS II
 HV0669
 HV0669.The horizontal coordinates were scaled from a map and have
 HV0669.an estimated accuracy of +/- 6 seconds.
 HV0669
 HV0669.The orthometric height was determined by differential leveling and
 HV0669.adjusted by the NATIONAL GEODETIC SURVEY
 HV0669.in June 1991.
 HV0669
 HV0669.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0669.GEOID18 height accuracy estimate available here.
 HV0669
 HV0669.Click photographs - Photos may exist for this station.
 HV0669
 HV0669.The dynamic height is computed by dividing the NAVD 88
 HV0669.geopotential number by the normal gravity value computed on the
 HV0669.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0669.degrees latitude (g = 980.6199 gals.).
 HV0669
 HV0669.The modeled gravity was interpolated from observed gravity values.
 HV0669
 HV0669;                    North         East    Units  Estimated Accuracy
 HV0669;SPC MD       -    91,050.      419,290.      MT  (+/- 180 meters Scaled)
 HV0669
 HV0669_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH448613(NAD 83)
 HV0669
 HV0669                          SUPERSEDED SURVEY CONTROL
 HV0669
 HV0669  NGVD 29 (11/26/84)   50.285  (m)          164.98   (f) ADJUSTED    1 2
 HV0669
 HV0669.Superseded values are not recommended for survey control.
 HV0669
 HV0669.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0669.See file dsdata.pdf to determine how the superseded data were derived.
 HV0669
 HV0669_MARKER: X = CHISELED CROSS
 HV0669_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0669_SP_SET: CULVERT
 HV0669_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0669
 HV0669  HISTORY     - Date     Condition        Report By
 HV0669  HISTORY     - UNK      MONUMENTED       USGS
 HV0669  HISTORY     - 1941     GOOD             CGS
 HV0669  HISTORY     - 1942     GOOD             CGS
 HV0669
 HV0669                          STATION DESCRIPTION
 HV0669
 HV0669'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0669'4.8 MI NW FROM MECHANICSVILLE.
 HV0669'ABOUT 4.8 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0669'OFFICE AT MECHANICSVILLE, SAINT MARYS COUNTY, ON THE OUTSIDE
 HV0669'OF A SOUTH-TO-NORTHEAST CURVE, 69 FEET SOUTHWEST OF
 HV0669'POWER-TRANSMISSION LINE POLE 92, 40.4 FEET WEST OF A CORNER
 HV0669'WIRE GATEPOST EAST OF THE HIGHWAY, 25 FEET SOUTHWEST OF A CORNER
 HV0669'FENCE POST WEST OF THE HIGHWAY, OPPOSITE BENCH MARK P 40, DESCRIBED
 HV0669'ABOVE, ON THE CENTER OF THE TOP OF A 12-INCH CONCRETE CULVERT,
 HV0669'AND 14.6 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY.
 HV0669'A CHISELED SQUARE, MARKED 165.1.  NOTE-- 4.1 MI NW ALONG STATE
 HV0669'HIGHWAY 5, INSTEAD OF 4.8 MI.  NOTE-- 15.5 FT NW OF THE CENTERLINE
 HV0669'OF THE HIGHWAY, INSTEAD OF 14.6 FT.
 HV0669
 HV0669                          STATION RECOVERY (1942)
 HV0669
 HV0669'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0669'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1203 ***********************************************************************
 HV1203  DESIGNATION -  1650 WSSC
 HV1203  PID         -  HV1203
 HV1203  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1203  COUNTRY     -  US
 HV1203  USGS QUAD   -  LANHAM (2016)
 HV1203
 HV1203                         *CURRENT SURVEY CONTROL
 HV1203  ______________________________________________________________________
 HV1203* NAD 83(1986) POSITION- 38 53 49.     (N) 076 49 56.     (W)   SCALED
 HV1203* NAVD 88 ORTHO HEIGHT -    53.08  (+/-2cm)      174.1   (feet) VERTCON3
 HV1203  ______________________________________________________________________
 HV1203  GEOID HEIGHT    -        -32.525 (meters)                     GEOID18
 HV1203  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1203
 HV1203.The horizontal coordinates were scaled from a map and have
 HV1203.an estimated accuracy of +/- 6 seconds.
 HV1203
 HV1203.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1203.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1203
 HV1203.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1203.GEOID18 height accuracy estimate available here.
 HV1203
 HV1203.The vertical order pertains to the NGVD 29 superseded value.
 HV1203
 HV1203.Click photographs - Photos may exist for this station.
 HV1203
 HV1203;                    North         East    Units  Estimated Accuracy
 HV1203;SPC MD       -   136,580.      414,550.      MT  (+/- 180 meters Scaled)
 HV1203
 HV1203_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ411069(NAD 83)
 HV1203
 HV1203                          SUPERSEDED SURVEY CONTROL
 HV1203
 HV1203  NGVD 29 (11/26/84)   53.331  (m)          174.97   (f) ADJUSTED    2 0
 HV1203
 HV1203.Superseded values are not recommended for survey control.
 HV1203
 HV1203.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1203.See file dsdata.pdf to determine how the superseded data were derived.
 HV1203
 HV1203_MARKER: DD = SURVEY DISK
 HV1203_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1203_STAMPING: 1650
 HV1203_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1203
 HV1203  HISTORY     - Date     Condition        Report By
 HV1203  HISTORY     - UNK      MONUMENTED       WSSC
 HV1203  HISTORY     - 1944     GOOD             WSSC
 HV1203  HISTORY     - 20040303 MARK NOT FOUND   URS
 HV1203
 HV1203                          STATION DESCRIPTION
 HV1203
 HV1203'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1203'0.1 MI SW FROM LARGO.
 HV1203'ON CENTRAL AVENUE, 0.1 MILE SOUTHWEST OF THE INTERSECTION OF
 HV1203'MARLBORO PIKE, 72 FEET EAST OF THE JUNCTION OF A DRIVE LEADING
 HV1203'SOUTH TO THE D.A. DIXON HOUSE, 25.4 FEET NORTH OF THE CENTERLINE
 HV1203'OF THE ROAD, AND BETWEEN THREE LOCUST TREES AND A WILD CHERRY TREE.
 HV1203
 HV1203                          STATION RECOVERY (2004)
 HV1203
 HV1203'RECOVERY NOTE BY URS COMPANY 2004
 HV1203'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1453 ***********************************************************************
 JV1453  DESIGNATION -  1651 WSSC
 JV1453  PID         -  JV1453
 JV1453  STATE/COUNTY-  MD/MONTGOMERY
 JV1453  COUNTRY     -  US
 JV1453  USGS QUAD   -  BELTSVILLE (2016)
 JV1453
 JV1453                         *CURRENT SURVEY CONTROL
 JV1453  ______________________________________________________________________
 JV1453* NAD 83(1986) POSITION- 39 05 53.     (N) 076 56 41.     (W)   SCALED
 JV1453* NAVD 88 ORTHO HEIGHT -   148.32  (+/-2cm)      486.6   (feet) VERTCON3
 JV1453  ______________________________________________________________________
 JV1453  GEOID HEIGHT    -        -32.050 (meters)                     GEOID18
 JV1453  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1453
 JV1453.The horizontal coordinates were scaled from a map and have
 JV1453.an estimated accuracy of +/- 6 seconds.
 JV1453
 JV1453.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1453.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1453
 JV1453.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1453.GEOID18 height accuracy estimate available here.
 JV1453
 JV1453.The vertical order pertains to the NGVD 29 superseded value.
 JV1453
 JV1453.Click photographs - Photos may exist for this station.
 JV1453
 JV1453;                    North         East    Units  Estimated Accuracy
 JV1453;SPC MD       -   158,890.      404,780.      MT  (+/- 180 meters Scaled)
 JV1453
 JV1453_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ318294(NAD 83)
 JV1453
 JV1453                          SUPERSEDED SURVEY CONTROL
 JV1453
 JV1453  NGVD 29 (11/26/84)  148.530  (m)          487.30   (f) ADJUSTED    2 0
 JV1453
 JV1453.Superseded values are not recommended for survey control.
 JV1453
 JV1453.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1453.See file dsdata.pdf to determine how the superseded data were derived.
 JV1453
 JV1453_MARKER: DD = SURVEY DISK
 JV1453_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1453_STAMPING: 1651
 JV1453_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1453
 JV1453  HISTORY     - Date     Condition        Report By
 JV1453  HISTORY     - UNK      MONUMENTED       WSSC
 JV1453  HISTORY     - 1939     GOOD             WSSC
 JV1453
 JV1453                          STATION DESCRIPTION
 JV1453
 JV1453'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1453'1.7 MI N FROM FAIRLAND.
 JV1453'ON COLUMBIA ROAD, AT THE JUNCTION OF A DIRT ROAD LEADING EAST,
 JV1453'ON THE WEST SIDE OF COLUMBIA ROAD, AND ON THE SOUTH SIDE OF A
 JV1453'DRIVE TO A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2685 ***********************************************************************
 JV2685  DESIGNATION -  1653 WSSC
 JV2685  PID         -  JV2685
 JV2685  STATE/COUNTY-  MD/MONTGOMERY
 JV2685  COUNTRY     -  US
 JV2685  USGS QUAD   -  KENSINGTON (2016)
 JV2685
 JV2685                         *CURRENT SURVEY CONTROL
 JV2685  ______________________________________________________________________
 JV2685* NAD 83(1986) POSITION- 39 03 29.     (N) 077 03 01.     (W)   SCALED
 JV2685* NAVD 88 ORTHO HEIGHT -   135.79  (+/-2cm)      445.5   (feet) VERTCON3
 JV2685  ______________________________________________________________________
 JV2685  GEOID HEIGHT    -        -31.894 (meters)                     GEOID18
 JV2685  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2685
 JV2685.The horizontal coordinates were scaled from a map and have
 JV2685.an estimated accuracy of +/- 6 seconds.
 JV2685
 JV2685.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2685.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2685
 JV2685.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2685.GEOID18 height accuracy estimate available here.
 JV2685
 JV2685.The vertical order pertains to the NGVD 29 superseded value.
 JV2685
 JV2685.Click photographs - Photos may exist for this station.
 JV2685
 JV2685;                    North         East    Units  Estimated Accuracy
 JV2685;SPC MD       -   154,450.      395,650.      MT  (+/- 180 meters Scaled)
 JV2685
 JV2685_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ226252(NAD 83)
 JV2685
 JV2685                          SUPERSEDED SURVEY CONTROL
 JV2685
 JV2685  NGVD 29 (11/26/84)  136.008  (m)          446.22   (f) ADJUSTED    2 0
 JV2685
 JV2685.Superseded values are not recommended for survey control.
 JV2685
 JV2685.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2685.See file dsdata.pdf to determine how the superseded data were derived.
 JV2685
 JV2685_MARKER: DD = SURVEY DISK
 JV2685_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV2685_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2685
 JV2685  HISTORY     - Date     Condition        Report By
 JV2685  HISTORY     - UNK      MONUMENTED       WSSC
 JV2685  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV2685  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2685
 JV2685                          STATION DESCRIPTION
 JV2685
 JV2685'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2685'AT GLENMONT.
 JV2685'AT THE SE CORNER OF THE INTERSECTION OF GLENMONT RD (STATE HIGHWAY
 JV2685'183) AND GEORGIA AVE. (STATE HIGHWAY 97), 45.5 FT E OF GEORGIA AVE.
 JV2685'AND 40 FT S OF THE CENTERLINE OF GLENMONT RD.
 JV2685
 JV2685                          STATION RECOVERY (1987)
 JV2685
 JV2685'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2685'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1418 ***********************************************************************
 JV1418  DESIGNATION -  1654 WSSC
 JV1418  PID         -  JV1418
 JV1418  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1418  COUNTRY     -  US
 JV1418  USGS QUAD   -  BELTSVILLE (2016)
 JV1418
 JV1418                         *CURRENT SURVEY CONTROL
 JV1418  ______________________________________________________________________
 JV1418* NAD 83(1986) POSITION- 39 00 38.     (N) 076 58 37.     (W)   SCALED
 JV1418* NAVD 88 ORTHO HEIGHT -    82.09  (+/-2cm)      269.3   (feet) VERTCON3
 JV1418  ______________________________________________________________________
 JV1418  GEOID HEIGHT    -        -32.040 (meters)                     GEOID18
 JV1418  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1418
 JV1418.The horizontal coordinates were scaled from a map and have
 JV1418.an estimated accuracy of +/- 6 seconds.
 JV1418
 JV1418.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1418.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1418
 JV1418.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1418.GEOID18 height accuracy estimate available here.
 JV1418
 JV1418.The vertical order pertains to the NGVD 29 superseded value.
 JV1418
 JV1418.Click photographs - Photos may exist for this station.
 JV1418
 JV1418;                    North         East    Units  Estimated Accuracy
 JV1418;SPC MD       -   149,180.      402,000.      MT  (+/- 180 meters Scaled)
 JV1418
 JV1418_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ288198(NAD 83)
 JV1418
 JV1418                          SUPERSEDED SURVEY CONTROL
 JV1418
 JV1418  NGVD 29 (11/26/84)   82.302  (m)          270.02   (f) ADJUSTED    2 0
 JV1418
 JV1418.Superseded values are not recommended for survey control.
 JV1418
 JV1418.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1418.See file dsdata.pdf to determine how the superseded data were derived.
 JV1418
 JV1418_MARKER: DD = SURVEY DISK
 JV1418_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1418_STAMPING: 1654
 JV1418_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1418
 JV1418  HISTORY     - Date     Condition        Report By
 JV1418  HISTORY     - UNK      MONUMENTED       WSSC
 JV1418  HISTORY     - 1939     GOOD             WSSC
 JV1418
 JV1418                          STATION DESCRIPTION
 JV1418
 JV1418'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1418'0.5 MI S FROM OAKVIEW.
 JV1418'ON PISGAH CHURCH ROAD, ABOUT 250 FEET SOUTH OF THE PRINCE
 JV1418'GEORGES-MONTGOMERY COUNTY LINE, AND ABOUT 125 FEET NORTH OF THE
 JV1418'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1432 ***********************************************************************
 JV1432  DESIGNATION -  1656 WSSC
 JV1432  PID         -  JV1432
 JV1432  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1432  COUNTRY     -  US
 JV1432  USGS QUAD   -  BELTSVILLE (2016)
 JV1432
 JV1432                         *CURRENT SURVEY CONTROL
 JV1432  ______________________________________________________________________
 JV1432* NAD 83(1986) POSITION- 39 00 07.     (N) 076 57 57.     (W)   SCALED
 JV1432* NAVD 88 ORTHO HEIGHT -    55.16  (+/-2cm)      181.0   (feet) VERTCON3
 JV1432  ______________________________________________________________________
 JV1432  GEOID HEIGHT    -        -32.063 (meters)                     GEOID18
 JV1432  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1432
 JV1432.The horizontal coordinates were scaled from a map and have
 JV1432.an estimated accuracy of +/- 6 seconds.
 JV1432
 JV1432.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1432.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1432
 JV1432.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1432.GEOID18 height accuracy estimate available here.
 JV1432
 JV1432.The vertical order pertains to the NGVD 29 superseded value.
 JV1432
 JV1432.Click photographs - Photos may exist for this station.
 JV1432
 JV1432;                    North         East    Units  Estimated Accuracy
 JV1432;SPC MD       -   148,220.      402,960.      MT  (+/- 180 meters Scaled)
 JV1432
 JV1432_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ297188(NAD 83)
 JV1432
 JV1432                          SUPERSEDED SURVEY CONTROL
 JV1432
 JV1432  NGVD 29 (11/26/84)   55.380  (m)          181.69   (f) ADJUSTED    2 0
 JV1432
 JV1432.Superseded values are not recommended for survey control.
 JV1432
 JV1432.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1432.See file dsdata.pdf to determine how the superseded data were derived.
 JV1432
 JV1432_MARKER: DD = SURVEY DISK
 JV1432_SETTING: 0 = UNSPECIFIED SETTING
 JV1432_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1432
 JV1432  HISTORY     - Date     Condition        Report By
 JV1432  HISTORY     - UNK      MONUMENTED       WSSC
 JV1432  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1432
 JV1432                          STATION DESCRIPTION
 JV1432
 JV1432'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1432'0.3 MI E FROM ADELPHI.
 JV1432'SEARCHED FOR BY MEANS OF PHOTOSTAT COPY OF ORIGINAL W.S.S.D.
 JV1432'DESCRIPTION BUT NOT RECOVERED.  ORIGINAL DESCRIPTION WAS NOT
 JV1432'VERY COMPLETE, EXTENSIVE CHANGES HAVE BEEN MADE, AND NOT MUCH
 JV1432'CHANCE OF RECOVERING THIS MARK NOW (EVEN IF IT IS STILL IN
 JV1432'PLACE) WITHOUT A MINE DETECTOR OR SOME SIMILAR DEVICE.
 JV1432'ORIGINAL DESCRIPTION-- ON METZROTT ROAD, 50 FEET WEST OF
 JV1432'ADELPHI ROAD, JUST SOUTH OF THE SOUTH PROPERTY LINE OF THE
 JV1432'HEITMULLER PROPERTY, BETWEEN TWO CEDAR TREES, AND ON THE
 JV1432'SOUTH SIDE OF METZROTT ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7417 ***********************************************************************
 HV7417  DESIGNATION -  16562 WSSC 1970
 HV7417  PID         -  HV7417
 HV7417  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7417  COUNTRY     -  US
 HV7417  USGS QUAD   -  BRANDYWINE (2016)
 HV7417
 HV7417                         *CURRENT SURVEY CONTROL
 HV7417  ______________________________________________________________________
 HV7417* NAD 83(1993) POSITION- 38 41 46.12394(N) 076 52 19.91879(W)   ADJUSTED
 HV7417* NAVD 88 ORTHO HEIGHT -    78.9   (meters)      259.    (feet) VERTCON3
 HV7417  ______________________________________________________________________
 HV7417  GEOID HEIGHT    -        -32.829 (meters)                     GEOID18
 HV7417  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 HV7417  HORZ ORDER      -  SECOND
 HV7417
 HV7417.The horizontal coordinates were established by classical geodetic methods
 HV7417.and adjusted by the National Geodetic Survey in November 1994.
 HV7417
 HV7417.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7417.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7417
 HV7417.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7417.GEOID18 height accuracy estimate available here.
 HV7417
 HV7417.Click photographs - Photos may exist for this station.
 HV7417
 HV7417.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7417
 HV7417. The following values were computed from the NAD 83(1993) position.
 HV7417
 HV7417;                    North         East     Units Scale Factor Converg.
 HV7417;SPC MD       -   114,283.970   411,117.571   MT  0.99995474   +0 04 48.8
 HV7417;SPC MD       -   374,946.66  1,348,808.23   sFT  0.99995474   +0 04 48.8
 HV7417;UTM  18      - 4,284,721.786   337,185.459   MT  0.99992644   -1 10 14.7
 HV7417
 HV7417!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7417!SPC MD       -   0.99999278  x   0.99995474  =   0.99994752
 HV7417!UTM  18      -   0.99999278  x   0.99992644  =   0.99991922
 HV7417
 HV7417_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3718584721(NAD 83)
 HV7417
 HV7417                          SUPERSEDED SURVEY CONTROL
 HV7417
 HV7417  NAD 83(1991)-  38 41 46.12362(N)    076 52 19.91897(W) AD(       ) 2
 HV7417  NAD 83(1986)-  38 41 46.12223(N)    076 52 19.93365(W) AD(       ) 2
 HV7417  NAD 27      -  38 41 45.70535(N)    076 52 21.03654(W) AD(       ) 2
 HV7417  NGVD 29 (07/19/86)   79.1    (m)          260.     (f) VERT ANG       
 HV7417
 HV7417.Superseded values are not recommended for survey control.
 HV7417
 HV7417.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7417.See file dsdata.pdf to determine how the superseded data were derived.
 HV7417
 HV7417_MARKER: DD = SURVEY DISK
 HV7417_SETTING: 0 = UNSPECIFIED SETTING
 HV7417_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7417_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7417+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2004
 HV7417
 HV7417  HISTORY     - Date     Condition        Report By
 HV7417  HISTORY     - 1969     MONUMENTED       WSSC
 HV7417  HISTORY     - 20040726 GOOD             GEOCAC
 HV7417
 HV7417                          STATION DESCRIPTION
 HV7417
 HV7417'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7417'THE STATION IS LOCATED AT T.B. ON BRIDGE ON ROUTE 301 SOUTH
 HV7417'OVER ROUTE 5.
 HV7417'
 HV7417'THE REACH THE STATION FROM THE INTERSECTION OF ROUTE 381 AND
 HV7417'ROUTE 5, GO SOUTH ON ROUTE 5 FOR .4 MILES TO BRIDGE OVER ROUTE 5.
 HV7417'
 HV7417'THE STATION MARK IS A BRASS DISK STAMPED TB 1960 ON ROUTE 301
 HV7417'AT THE NORTHEAST CORNER OF BRIDGE OVER ROUTE 5.
 HV7417
 HV7417                          STATION RECOVERY (2004)
 HV7417
 HV7417'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV7417'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7438 ***********************************************************************
 HV7438  DESIGNATION -  16563 WSSC 1970
 HV7438  PID         -  HV7438
 HV7438  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7438  COUNTRY     -  US
 HV7438  USGS QUAD   -  PISCATAWAY (2016)
 HV7438
 HV7438                         *CURRENT SURVEY CONTROL
 HV7438  ______________________________________________________________________
 HV7438* NAD 83(1993) POSITION- 38 42 07.20339(N) 076 52 35.23316(W)   ADJUSTED
 HV7438* NAVD 88 ORTHO HEIGHT -    73.4   (meters)      241.    (feet) VERTCON3
 HV7438  ______________________________________________________________________
 HV7438  GEOID HEIGHT    -        -32.800 (meters)                     GEOID18
 HV7438  LAPLACE CORR    -         -5.67  (seconds)                    DEFLEC18
 HV7438  HORZ ORDER      -  SECOND
 HV7438
 HV7438.The horizontal coordinates were established by classical geodetic methods
 HV7438.and adjusted by the National Geodetic Survey in November 1994.
 HV7438
 HV7438.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7438.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7438
 HV7438.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7438.GEOID18 height accuracy estimate available here.
 HV7438
 HV7438.Click photographs - Photos may exist for this station.
 HV7438
 HV7438.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7438
 HV7438. The following values were computed from the NAD 83(1993) position.
 HV7438
 HV7438;                    North         East     Units Scale Factor Converg.
 HV7438;SPC MD       -   114,933.437   410,746.630   MT  0.99995443   +0 04 39.2
 HV7438;SPC MD       -   377,077.45  1,347,591.24   sFT  0.99995443   +0 04 39.2
 HV7438;UTM  18      - 4,285,379.179   336,828.795   MT  0.99992787   -1 10 24.8
 HV7438
 HV7438!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7438!SPC MD       -   0.99999363  x   0.99995443  =   0.99994806
 HV7438!UTM  18      -   0.99999363  x   0.99992787  =   0.99992150
 HV7438
 HV7438:                Primary Azimuth Mark                     Grid Az
 HV7438:SPC MD       -  GWYNN                                    077 56 08.8
 HV7438:UTM  18      -  GWYNN                                    079 11 12.8
 HV7438
 HV7438_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3682885379(NAD 83)
 HV7438
 HV7438|---------------------------------------------------------------------|
 HV7438| PID    Reference Object                     Distance      Geod. Az  |
 HV7438|                                                           dddmmss.s |
 HV7438| HV0831 GWYNN                               438.242 METERS 0780048.0 |
 HV7438|---------------------------------------------------------------------|
 HV7438
 HV7438                          SUPERSEDED SURVEY CONTROL
 HV7438
 HV7438  NAD 83(1991)-  38 42 07.20305(N)    076 52 35.23338(W) AD(       ) 2
 HV7438  NAD 83(1986)-  38 42 07.20170(N)    076 52 35.24796(W) AD(       ) 2
 HV7438  NAD 27      -  38 42 06.78525(N)    076 52 36.35019(W) AD(       ) 2
 HV7438  NGVD 29 (07/19/86)   73.6    (m)          241.     (f) VERT ANG       
 HV7438
 HV7438.Superseded values are not recommended for survey control.
 HV7438
 HV7438.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7438.See file dsdata.pdf to determine how the superseded data were derived.
 HV7438
 HV7438_MARKER: U = CONCRETE POST
 HV7438_SETTING: 0 = UNSPECIFIED SETTING
 HV7438_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7438
 HV7438  HISTORY     - Date     Condition        Report By
 HV7438  HISTORY     - 1969     MONUMENTED       WSSC
 HV7438
 HV7438                          STATION DESCRIPTION
 HV7438
 HV7438'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7438'THS STATION IS LOCATED AT TB, ON THE WEST SIDE OF ROUTE 5 IN AN
 HV7438'ISLAND AT THE INTERSECTION OF BRANDYWINE ROAD AND ROUTE 381 AND
 HV7438'3.50 MILES NORTH OF THE CENTERLINE OF ROUTE 381.
 HV7438'
 HV7438'THE STATION MARK IS A CONCRETE MONUMENT (BRASS DISK GONE) AND
 HV7438'IS .2 FEET ABOVE THE SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1447 ***********************************************************************
 JV1447  DESIGNATION -  1657 WSSC
 JV1447  PID         -  JV1447
 JV1447  STATE/COUNTY-  MD/MONTGOMERY
 JV1447  COUNTRY     -  US
 JV1447  USGS QUAD   -  BELTSVILLE (2016)
 JV1447
 JV1447                         *CURRENT SURVEY CONTROL
 JV1447  ______________________________________________________________________
 JV1447* NAD 83(1986) POSITION- 39 03 53.     (N) 076 57 53.     (W)   SCALED
 JV1447* NAVD 88 ORTHO HEIGHT -   110.727 (meters)      363.28  (feet) ADJUSTED
 JV1447  ______________________________________________________________________
 JV1447  GEOID HEIGHT    -        -32.033 (meters)                     GEOID18
 JV1447  DYNAMIC HEIGHT  -        110.667 (meters)      363.08  (feet) COMP
 JV1447  MODELED GRAVITY -    980,088.8   (mgal)                       NAVD 88
 JV1447
 JV1447  VERT ORDER      -  SECOND    CLASS 0
 JV1447
 JV1447.The horizontal coordinates were scaled from a map and have
 JV1447.an estimated accuracy of +/- 6 seconds.
 JV1447
 JV1447.The orthometric height was determined by differential leveling and
 JV1447.adjusted by the NATIONAL GEODETIC SURVEY
 JV1447.in June 1991.
 JV1447
 JV1447.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1447.GEOID18 height accuracy estimate available here.
 JV1447
 JV1447.Click photographs - Photos may exist for this station.
 JV1447
 JV1447.The dynamic height is computed by dividing the NAVD 88
 JV1447.geopotential number by the normal gravity value computed on the
 JV1447.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1447.degrees latitude (g = 980.6199 gals.).
 JV1447
 JV1447.The modeled gravity was interpolated from observed gravity values.
 JV1447
 JV1447;                    North         East    Units  Estimated Accuracy
 JV1447;SPC MD       -   155,190.      403,050.      MT  (+/- 180 meters Scaled)
 JV1447
 JV1447_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ300257(NAD 83)
 JV1447
 JV1447                          SUPERSEDED SURVEY CONTROL
 JV1447
 JV1447  NGVD 29 (11/26/84)  110.945  (m)          363.99   (f) ADJUSTED    2 0
 JV1447
 JV1447.Superseded values are not recommended for survey control.
 JV1447
 JV1447.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1447.See file dsdata.pdf to determine how the superseded data were derived.
 JV1447
 JV1447_MARKER: DD = SURVEY DISK
 JV1447_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1447_STAMPING: 1657
 JV1447_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1447
 JV1447  HISTORY     - Date     Condition        Report By
 JV1447  HISTORY     - UNK      MONUMENTED       WSSC
 JV1447  HISTORY     - 1952     GOOD             CGS
 JV1447
 JV1447                          STATION DESCRIPTION
 JV1447
 JV1447'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV1447'0.9 MI SW FROM FAIRLAND.
 JV1447'0.9 MILE SOUTHWEST ALONG COLUMBIA ROAD (STATE HIGHWAY 196) FROM
 JV1447'THE JUNCTION OF FAIRLAND ROAD AT FAIRLAND, MONTGOMERY COUNTY, AT
 JV1447'ST. MARKS EPISCOPAL CHURCH, IN FRONT OF THE RECREATION HALL, 82.8
 JV1447'FEET WESTERLY FROM THE NORTHERN ONE OF THE TWO WEST CORNERS OF
 JV1447'THE CHURCH BUILDING, 86.8 FEET WEST OF THE NORTH CORNER OF THE
 JV1447'RECREATION HALL, 58.3 FEET NORTHWEST OF THE WEST CORNER, 49.6
 JV1447'FEET WEST OF THE NORTH CORNER OF THE SOUTHWEST STEPS, 35.0 FEET
 JV1447'FROM A 30-INCH OAK TREE, 25.2 FEET FROM A POLE, AND 11.0 FEET FROM
 JV1447'A 10-INCH LOCUST TREE.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV1447'BRONZE DISK, STAMPED 1657, AND FASTENED TO THE TOP OF AN IRON
 JV1447'PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1420 ***********************************************************************
 HV1420  DESIGNATION -  1659 WSSC
 HV1420  PID         -  HV1420
 HV1420  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1420  COUNTRY     -  US
 HV1420  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1420
 HV1420                         *CURRENT SURVEY CONTROL
 HV1420  ______________________________________________________________________
 HV1420* NAD 83(1986) POSITION- 38 58 32.     (N) 076 59 10.     (W)   SCALED
 HV1420* NAVD 88 ORTHO HEIGHT -    35.964 (meters)      117.99  (feet) ADJUSTED
 HV1420  ______________________________________________________________________
 HV1420  GEOID HEIGHT    -        -32.046 (meters)                     GEOID18
 HV1420  DYNAMIC HEIGHT  -         35.945 (meters)      117.93  (feet) COMP
 HV1420  MODELED GRAVITY -    980,102.6   (mgal)                       NAVD 88
 HV1420
 HV1420  VERT ORDER      -  SECOND    CLASS 0
 HV1420
 HV1420.The horizontal coordinates were scaled from a map and have
 HV1420.an estimated accuracy of +/- 6 seconds.
 HV1420
 HV1420.The orthometric height was determined by differential leveling and
 HV1420.adjusted by the NATIONAL GEODETIC SURVEY
 HV1420.in June 1991.
 HV1420
 HV1420.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1420.GEOID18 height accuracy estimate available here.
 HV1420
 HV1420.Click photographs - Photos may exist for this station.
 HV1420
 HV1420.The dynamic height is computed by dividing the NAVD 88
 HV1420.geopotential number by the normal gravity value computed on the
 HV1420.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1420.degrees latitude (g = 980.6199 gals.).
 HV1420
 HV1420.The modeled gravity was interpolated from observed gravity values.
 HV1420
 HV1420;                    North         East    Units  Estimated Accuracy
 HV1420;SPC MD       -   145,290.      401,200.      MT  (+/- 180 meters Scaled)
 HV1420
 HV1420_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ279159(NAD 83)
 HV1420
 HV1420                          SUPERSEDED SURVEY CONTROL
 HV1420
 HV1420  NGVD 29 (11/26/84)   36.182  (m)          118.71   (f) ADJUSTED    2 0
 HV1420
 HV1420.Superseded values are not recommended for survey control.
 HV1420
 HV1420.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1420.See file dsdata.pdf to determine how the superseded data were derived.
 HV1420
 HV1420_MARKER: DD = SURVEY DISK
 HV1420_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1420_SP_SET: TOWER LEG FOOTING
 HV1420_STAMPING: WSSC 1659
 HV1420_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1420
 HV1420  HISTORY     - Date     Condition        Report By
 HV1420  HISTORY     - UNK      MONUMENTED       WSSC
 HV1420  HISTORY     - 1951     GOOD             CGS
 HV1420
 HV1420                          STATION DESCRIPTION
 HV1420
 HV1420'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1420'0.4 MI E FROM TAKOMA PARK.
 HV1420'IN PRINCE GEORGES COUNTY, EAST OF TAKOMA PARK, 0.4 MILE EAST
 HV1420'ALONG EAST-WEST HIGHWAY (STATE HIGHWAY 410) FROM ITS
 HV1420'INTERSECTION WITH NEW HAMPSHIRE AVENUE (STATE HIGHWAY 650), ABOUT
 HV1420'100 YARDS NORTH OF EAST-WEST HIGHWAY, AT TRANSMISSION-LINE
 HV1420'TOWER NO. 118, AND ON THE EAST CORNER OF THE MOST EASTERLY
 HV1420'OF THE FOUR FOOTINGS FOR THE TOWER LEGS.  A WASHINGTON SUBURBAN
 HV1420'SANITARY DISTRICT BRONZE DISK, STAMPED 1659.  NOTE-- TOWER HAS
 HV1420'PEPCO PAINTED ON WESTERLY LEG AND 118 PAINTED ON SOUTHERLY LEG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2686 ***********************************************************************
 JV2686  DESIGNATION -  1664 WSSC
 JV2686  PID         -  JV2686
 JV2686  STATE/COUNTY-  MD/MONTGOMERY
 JV2686  COUNTRY     -  US
 JV2686  USGS QUAD   -  KENSINGTON (2016)
 JV2686
 JV2686                         *CURRENT SURVEY CONTROL
 JV2686  ______________________________________________________________________
 JV2686* NAD 83(1986) POSITION- 39 03 19.     (N) 077 03 02.     (W)   SCALED
 JV2686* NAVD 88 ORTHO HEIGHT -   137.650 (meters)      451.61  (feet) ADJUSTED
 JV2686  ______________________________________________________________________
 JV2686  GEOID HEIGHT    -        -31.895 (meters)                     GEOID18
 JV2686  DYNAMIC HEIGHT  -        137.576 (meters)      451.36  (feet) COMP
 JV2686  MODELED GRAVITY -    980,087.6   (mgal)                       NAVD 88
 JV2686
 JV2686  VERT ORDER      -  SECOND    CLASS 0
 JV2686
 JV2686.The horizontal coordinates were scaled from a map and have
 JV2686.an estimated accuracy of +/- 6 seconds.
 JV2686
 JV2686.The orthometric height was determined by differential leveling and
 JV2686.adjusted by the NATIONAL GEODETIC SURVEY
 JV2686.in June 1991.
 JV2686
 JV2686.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2686.GEOID18 height accuracy estimate available here.
 JV2686
 JV2686.Click photographs - Photos may exist for this station.
 JV2686
 JV2686.The dynamic height is computed by dividing the NAVD 88
 JV2686.geopotential number by the normal gravity value computed on the
 JV2686.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2686.degrees latitude (g = 980.6199 gals.).
 JV2686
 JV2686.The modeled gravity was interpolated from observed gravity values.
 JV2686
 JV2686;                    North         East    Units  Estimated Accuracy
 JV2686;SPC MD       -   154,140.      395,620.      MT  (+/- 180 meters Scaled)
 JV2686
 JV2686_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ225249(NAD 83)
 JV2686
 JV2686                          SUPERSEDED SURVEY CONTROL
 JV2686
 JV2686  NGVD 29 (11/26/84)  137.871  (m)          452.33   (f) ADJUSTED    2 0
 JV2686
 JV2686.Superseded values are not recommended for survey control.
 JV2686
 JV2686.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2686.See file dsdata.pdf to determine how the superseded data were derived.
 JV2686
 JV2686_MARKER: DD = SURVEY DISK
 JV2686_SETTING: 0 = UNSPECIFIED SETTING
 JV2686_SP_SET: IRON PIPE
 JV2686_STAMPING: 1664
 JV2686_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2686
 JV2686  HISTORY     - Date     Condition        Report By
 JV2686  HISTORY     - UNK      MONUMENTED       WSSC
 JV2686  HISTORY     - 1967     GOOD             MDSRC
 JV2686  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2686
 JV2686                          STATION DESCRIPTION
 JV2686
 JV2686'DESCRIBED BY MD STATE ROADS COMM 1967
 JV2686'0.4 MI S FROM GLENMONT.
 JV2686'AT GLENMONT, JCT. OF MASON AND GEORGIA AVENUE, MONTGOMERY COUNTY,
 JV2686'ABOUT 0.2 MILES SOUTH ALONG STATE HIGHWAY 97, FROM THE JUNCTION
 JV2686'OF STATE HIGHWAY 183, AT GLENMONT SCHOOL, ON THE WEST SIDE OF
 JV2686'STATE HIGHWAY 97, - 26.8 FEET FROM FLAGPOLE, 64.6 FEET FROM THE
 JV2686'SOUTHEAST CORNER OF THE SCHOOL BUILDING, 35 FT NORTH OF THE C/L
 JV2686'OF MASON STREET, AND ABOUT FLUSH WITH THE GROUND SURFACE.  A
 JV2686'WASHINGTON SUBURBAN SANITARY DISTRICT BRONZE DISK, STAMPED 1664,
 JV2686'AND SET IN THE TOP OF A 2-INCH IRON PIPE.
 JV2686
 JV2686                          STATION RECOVERY (1995)
 JV2686
 JV2686'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2686'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2764 ***********************************************************************
 JV2764  DESIGNATION -  1665
 JV2764  PID         -  JV2764
 JV2764  STATE/COUNTY-  MD/MONTGOMERY
 JV2764  COUNTRY     -  US
 JV2764  USGS QUAD   -  KENSINGTON (2016)
 JV2764
 JV2764                         *CURRENT SURVEY CONTROL
 JV2764  ______________________________________________________________________
 JV2764* NAD 83(1986) POSITION- 39 01 49.86   (N) 077 00 18.34   (W)   HD_HELD1
 JV2764* NAVD 88 ORTHO HEIGHT -    68.141 (meters)      223.56  (feet) ADJUSTED
 JV2764  ______________________________________________________________________
 JV2764  GEOID HEIGHT    -        -31.984 (meters)                     GEOID18
 JV2764  DYNAMIC HEIGHT  -         68.104 (meters)      223.44  (feet) COMP
 JV2764  MODELED GRAVITY -    980,087.0   (mgal)                       NAVD 88
 JV2764
 JV2764  VERT ORDER      -  SECOND    CLASS 0
 JV2764
 JV2764.The horizontal coordinates were determined by differentially corrected
 JV2764.hand held GPS observations or other comparable positioning techniques
 JV2764.and have an estimated accuracy of +/- 3 meters.
 JV2764
 JV2764.The orthometric height was determined by differential leveling and
 JV2764.adjusted by the NATIONAL GEODETIC SURVEY
 JV2764.in June 1991.
 JV2764
 JV2764.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2764.GEOID18 height accuracy estimate available here.
 JV2764
 JV2764.Click photographs - Photos may exist for this station.
 JV2764
 JV2764.The dynamic height is computed by dividing the NAVD 88
 JV2764.geopotential number by the normal gravity value computed on the
 JV2764.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2764.degrees latitude (g = 980.6199 gals.).
 JV2764
 JV2764.The modeled gravity was interpolated from observed gravity values.
 JV2764
 JV2764;                    North         East    Units  Estimated Accuracy
 JV2764;SPC MD       -   151,393.9     399,558.9     MT  (+/- 3 meters HH1 GPS) 
 JV2764
 JV2764_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2644222075(NAD 83)
 JV2764
 JV2764                          SUPERSEDED SURVEY CONTROL
 JV2764
 JV2764  NGVD 29 (11/26/84)   68.355  (m)          224.26   (f) ADJUSTED    2 0
 JV2764
 JV2764.Superseded values are not recommended for survey control.
 JV2764
 JV2764.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2764.See file dsdata.pdf to determine how the superseded data were derived.
 JV2764
 JV2764_MARKER: DB = BENCH MARK DISK
 JV2764_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV2764_SP_SET: RETAINING WALL
 JV2764_STAMPING: 1665
 JV2764_MARK LOGO: WSSC
 JV2764_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2764+STABILITY: SURFACE MOTION
 JV2764_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2764+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2009
 JV2764
 JV2764  HISTORY     - Date     Condition        Report By
 JV2764  HISTORY     - UNK      MONUMENTED       WSSC
 JV2764  HISTORY     - 1952     GOOD             CGS
 JV2764  HISTORY     - 20090316 GOOD             NGS
 JV2764
 JV2764                          STATION DESCRIPTION
 JV2764
 JV2764'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV2764'AT BURNT MILLS.
 JV2764'AT BURNT MILLS, MONTGOMERY COUNTY, AT THE FILTRATION PLANT,
 JV2764'ON THE NORTH SIDE OF THE LOW LIFT STATION, AND IN THE NORTHWEST
 JV2764'CORNER OF THE AEROMIX TANK.  A WASHINGTON SUBURBAN SANITARY
 JV2764'DISTRICT BRONZE DISK, STAMPED 1665.
 JV2764
 JV2764                          STATION RECOVERY (2009)
 JV2764
 JV2764'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV2764'THE AEROMIX TANK WAS REMOVED MANY YEARS AGO.  THE STRUCTURE IN WHICH
 JV2764'THE MARK IS SET IS NOW JUST A RETAINING WALL.  THE MARK IS SET AT THE
 JV2764'ELBOW OF THE RETAINING WALL, WHICH IS 5.66 M NORTH OF THE NORTH SIDE
 JV2764'OF THE BUILDING, 8.66 M SE OF THE BACK EDGE OF THE SIDEWALK ALONG RT
 JV2764'29,  12.62 M SW OF THE CENTER LINE OF THE ENTRANCE TO THE PARKING LOT
 JV2764'BEHIND THE BUILDING, AND 1.09 M ABOVE GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1444 ***********************************************************************
 HV1444  DESIGNATION -  1666 WSSC
 HV1444  PID         -  HV1444
 HV1444  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1444  COUNTRY     -  US
 HV1444  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1444
 HV1444                         *CURRENT SURVEY CONTROL
 HV1444  ______________________________________________________________________
 HV1444* NAD 83(1986) POSITION- 38 59 55.     (N) 076 55 41.     (W)   SCALED
 HV1444* NAVD 88 ORTHO HEIGHT -    26.044 (meters)       85.45  (feet) ADJUSTED
 HV1444  ______________________________________________________________________
 HV1444  GEOID HEIGHT    -        -32.141 (meters)                     GEOID18
 HV1444  DYNAMIC HEIGHT  -         26.030 (meters)       85.40  (feet) COMP
 HV1444  MODELED GRAVITY -    980,108.0   (mgal)                       NAVD 88
 HV1444
 HV1444  VERT ORDER      -  FIRST     CLASS I
 HV1444
 HV1444.The horizontal coordinates were scaled from a map and have
 HV1444.an estimated accuracy of +/- 6 seconds.
 HV1444
 HV1444.The orthometric height was determined by differential leveling and
 HV1444.adjusted by the NATIONAL GEODETIC SURVEY
 HV1444.in June 1991.
 HV1444
 HV1444.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1444.GEOID18 height accuracy estimate available here.
 HV1444
 HV1444.Click photographs - Photos may exist for this station.
 HV1444
 HV1444.The dynamic height is computed by dividing the NAVD 88
 HV1444.geopotential number by the normal gravity value computed on the
 HV1444.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1444.degrees latitude (g = 980.6199 gals.).
 HV1444
 HV1444.The modeled gravity was interpolated from observed gravity values.
 HV1444
 HV1444;                    North         East    Units  Estimated Accuracy
 HV1444;SPC MD       -   147,850.      406,230.      MT  (+/- 180 meters Scaled)
 HV1444
 HV1444_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ330183(NAD 83)
 HV1444
 HV1444                          SUPERSEDED SURVEY CONTROL
 HV1444
 HV1444  NGVD 29 (11/26/84)   26.272  (m)           86.19   (f) ADJUSTED    1 1
 HV1444
 HV1444.Superseded values are not recommended for survey control.
 HV1444
 HV1444.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1444.See file dsdata.pdf to determine how the superseded data were derived.
 HV1444
 HV1444_MARKER: DD = SURVEY DISK
 HV1444_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1444_SP_SET: SCHOOL BUILDING
 HV1444_STAMPING: BM NO 1666
 HV1444_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1444
 HV1444  HISTORY     - Date     Condition        Report By
 HV1444  HISTORY     - UNK      MONUMENTED       WSSC
 HV1444  HISTORY     - 1971     GOOD             NGS
 HV1444  HISTORY     - 20031021 MARK NOT FOUND   URS
 HV1444
 HV1444                          STATION DESCRIPTION
 HV1444
 HV1444'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1444'AT COLLEGE PARK.
 HV1444'AT COLLEGE PARK, ABOUT 1.3 MILES SOUTH ALONG U.S. HIGHWAY 1 FROM
 HV1444'THE INTERSTATE 495 (CAPITOL BELTWAY) INTERCHANGE, THENCE 0.2
 HV1444'MILE EAST ALONG BRANCHVILLE ROAD, AT THE SUBURB OF BRANCHVILLE,
 HV1444'SET VERTICALLY IN THE EAST FACE OF THE BERWYN PUBLIC SCHOOL
 HV1444'BUILDING, 9.9 FEET WEST OF THE SOUTHEAST CORNER OF THE EAST WING
 HV1444'OF THE BUILDING, 1.2 FEET SOUTH OF THE SOUTHWEST CORNER OF THE
 HV1444'WING, 38 1/2 FEET NORTH OF THE EAST ENTRANCE TO THE BUILDING,
 HV1444'AND ABOUT 1/2 FOOT ABOVE THE SURFACE OF THE GROUND.
 HV1444
 HV1444                          STATION RECOVERY (2003)
 HV1444
 HV1444'RECOVERY NOTE BY URS COMPANY 2003
 HV1444'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7404 ***********************************************************************
 HV7404  DESIGNATION -  16672 WSSC 1970
 HV7404  PID         -  HV7404
 HV7404  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7404  COUNTRY     -  US
 HV7404  USGS QUAD   -  BRANDYWINE (2016)
 HV7404
 HV7404                         *CURRENT SURVEY CONTROL
 HV7404  ______________________________________________________________________
 HV7404* NAD 83(1993) POSITION- 38 44 36.41541(N) 076 46 54.14924(W)   ADJUSTED
 HV7404* NAVD 88 ORTHO HEIGHT -    64.1   (meters)      210.    (feet) VERTCON3
 HV7404  ______________________________________________________________________
 HV7404  GEOID HEIGHT    -        -32.987 (meters)                     GEOID18
 HV7404  LAPLACE CORR    -         -6.07  (seconds)                    DEFLEC18
 HV7404  HORZ ORDER      -  SECOND
 HV7404
 HV7404.The horizontal coordinates were established by classical geodetic methods
 HV7404.and adjusted by the National Geodetic Survey in November 1994.
 HV7404
 HV7404.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7404.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7404
 HV7404.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7404.GEOID18 height accuracy estimate available here.
 HV7404
 HV7404.Click photographs - Photos may exist for this station.
 HV7404
 HV7404.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7404
 HV7404. The following values were computed from the NAD 83(1993) position.
 HV7404
 HV7404;                    North         East     Units Scale Factor Converg.
 HV7404;SPC MD       -   119,549.766   418,977.018   MT  0.99995250   +0 08 13.2
 HV7404;SPC MD       -   392,222.86  1,374,593.77   sFT  0.99995250   +0 08 13.2
 HV7404;UTM  18      - 4,289,814.432   345,157.711   MT  0.99989525   -1 06 55.0
 HV7404
 HV7404!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7404!SPC MD       -   0.99999512  x   0.99995250  =   0.99994763
 HV7404!UTM  18      -   0.99999512  x   0.99989525  =   0.99989038
 HV7404
 HV7404_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4515789814(NAD 83)
 HV7404
 HV7404                          SUPERSEDED SURVEY CONTROL
 HV7404
 HV7404  NAD 83(1991)-  38 44 36.41533(N)    076 46 54.14941(W) AD(       ) 2
 HV7404  NAD 83(1986)-  38 44 36.41262(N)    076 46 54.16367(W) AD(       ) 2
 HV7404  NAD 27      -  38 44 35.99888(N)    076 46 55.27404(W) AD(       ) 2
 HV7404  NGVD 29 (07/19/86)   64.3    (m)          211.     (f) VERT ANG       
 HV7404
 HV7404.Superseded values are not recommended for survey control.
 HV7404
 HV7404.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7404.See file dsdata.pdf to determine how the superseded data were derived.
 HV7404
 HV7404_MARKER: N = NAIL
 HV7404_SETTING: 0 = UNSPECIFIED SETTING
 HV7404_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7404
 HV7404  HISTORY     - Date     Condition        Report By
 HV7404  HISTORY     - 1969     MONUMENTED       WSSC
 HV7404
 HV7404                          STATION DESCRIPTION
 HV7404
 HV7404'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7404'THE STATION IS LOCATED 2.0 MILES NORTHEAST OF CHELTENHAM AND
 HV7404'.4 MILES EAST OF THE PENNSYLVANIA RAILROAD.
 HV7404'
 HV7404'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 301 AND
 HV7404'FRANK TIPPETT ROAD AT CHELTENHAM, GO NORTH ON ROUTE 301 FOR .2
 HV7404'MILES TO OLD INDIAN HEAD ROAD ON THE RIGHT.  GO RIGHT FOR .4
 HV7404'MILES TO THE PENNSYLVANIA RAILROAD AND CONTINUE NORTHEAST ON
 HV7404'OLD INDIAN HEAD ROAD FOR .4 MILES TO VAN BRADY ROAD.  CONTINUE
 HV7404'ON OLD INDIAN HEAD ROAD FOR 1.2 MILES TO DULEY STATION ROAD.  GO
 HV7404'EAST ON DULEY STATION ROAD FOR 7. MILES TO THE STATION ON THE
 HV7404'LEFT AT THE PEPCO POWER LINE.
 HV7404'
 HV7404'THE STATION MARK IS AN IRON PIPE WITH A P.K. NAIL CENTER AND
 HV7404'IS .6 FEET BELOW THE SURFACE.  IT IS 6.20 FEET NORTH OF THE NORTH
 HV7404'EDGE OF THE MACADAM OF DULEY STATION ROAD, 16.41 FEET WEST OF
 HV7404'POLE NO. 834672.  75.43 FEET SOUTH OF AN X CUT IN THE SOUTHEAST
 HV7404'TOWER LEG, 89.75 FEET SOUTHEAST OF THE SOUTHWEST TOWER LEG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2348 ***********************************************************************
 HV2348  DESIGNATION -  1669
 HV2348  PID         -  HV2348
 HV2348  STATE/COUNTY-  MD/MONTGOMERY
 HV2348  COUNTRY     -  US
 HV2348  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2348
 HV2348                         *CURRENT SURVEY CONTROL
 HV2348  ______________________________________________________________________
 HV2348* NAD 83(1986) POSITION- 38 58 59.05   (N) 077 00 01.61   (W)   HD_HELD1
 HV2348* NAVD 88 ORTHO HEIGHT -    55.645 (meters)      182.56  (feet) ADJUSTED
 HV2348  ______________________________________________________________________
 HV2348  GEOID HEIGHT    -        -32.019 (meters)                     GEOID18
 HV2348  DYNAMIC HEIGHT  -         55.616 (meters)      182.47  (feet) COMP
 HV2348  MODELED GRAVITY -    980,095.3   (mgal)                       NAVD 88
 HV2348
 HV2348  VERT ORDER      -  SECOND    CLASS 0
 HV2348
 HV2348.The horizontal coordinates were determined by differentially corrected
 HV2348.hand held GPS observations or other comparable positioning techniques
 HV2348.and have an estimated accuracy of +/- 3 meters.
 HV2348
 HV2348.The orthometric height was determined by differential leveling and
 HV2348.adjusted by the NATIONAL GEODETIC SURVEY
 HV2348.in June 1991.
 HV2348
 HV2348.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2348.GEOID18 height accuracy estimate available here.
 HV2348
 HV2348.Click photographs - Photos may exist for this station.
 HV2348
 HV2348.The dynamic height is computed by dividing the NAVD 88
 HV2348.geopotential number by the normal gravity value computed on the
 HV2348.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2348.degrees latitude (g = 980.6199 gals.).
 HV2348
 HV2348.The modeled gravity was interpolated from observed gravity values.
 HV2348
 HV2348;                    North         East    Units  Estimated Accuracy
 HV2348;SPC MD       -   146,126.7     399,961.3     MT  (+/- 3 meters HH1 GPS) 
 HV2348
 HV2348_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2672916801(NAD 83)
 HV2348
 HV2348                          SUPERSEDED SURVEY CONTROL
 HV2348
 HV2348  NGVD 29 (11/26/84)   55.860  (m)          183.27   (f) ADJUSTED    2 0
 HV2348
 HV2348.Superseded values are not recommended for survey control.
 HV2348
 HV2348.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2348.See file dsdata.pdf to determine how the superseded data were derived.
 HV2348
 HV2348_MARKER: DB = BENCH MARK DISK
 HV2348_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2348_SP_SET: BRIDGE
 HV2348_STAMPING: 1669
 HV2348_MARK LOGO: WSSC
 HV2348_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2348_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2348+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2012
 HV2348
 HV2348  HISTORY     - Date     Condition        Report By
 HV2348  HISTORY     - UNK      MONUMENTED       WSSC
 HV2348  HISTORY     - 1952     GOOD             CGS
 HV2348  HISTORY     - 20080503 GOOD             NGS
 HV2348  HISTORY     - 20121204 GOOD             GEOCAC
 HV2348
 HV2348                          STATION DESCRIPTION
 HV2348
 HV2348'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV2348'AT TAKOMA PARK.
 HV2348'AT TAKOMA PARK, MONTGOMERY COUNTY, AT THE CARROLL AVENUE BRIDGE
 HV2348'OVER SLIGO BRANCH, ABOUT 28-1/2 FEET NORTHEAST OF THE SOUTHWEST
 HV2348'END OF THE SOUTHEAST PARAPET WALL, AND BETWEEN THE SIDEWALK AND
 HV2348'THE RAILING.  A WASHINGTON SUBURBAN SANITARY DISTRICT LAG
 HV2348'SCREW AND WASHER, STAMPED WSSC 1669 AND SET IN THE CONCRETE.
 HV2348
 HV2348                          STATION RECOVERY (2008)
 HV2348
 HV2348'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 HV2348'RECOVERED IN GOOD CONDITION.
 HV2348
 HV2348                          STATION RECOVERY (2012)
 HV2348
 HV2348'RECOVERY NOTE BY GEOCACHING 2012 (APC)
 HV2348'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1380 ***********************************************************************
 JV1380  DESIGNATION -  167
 JV1380  PID         -  JV1380
 JV1380  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1380  COUNTRY     -  US
 JV1380  USGS QUAD   -  ODENTON (2016)
 JV1380
 JV1380                         *CURRENT SURVEY CONTROL
 JV1380  ______________________________________________________________________
 JV1380* NAD 83(1986) POSITION- 39 04 48.3    (N) 076 42 41.0    (W)   HD_HELD2
 JV1380* NAVD 88 ORTHO HEIGHT -    51.701 (meters)      169.62  (feet) ADJUSTED
 JV1380  ______________________________________________________________________
 JV1380  GEOID HEIGHT    -        -32.649 (meters)                     GEOID18
 JV1380  DYNAMIC HEIGHT  -         51.673 (meters)      169.53  (feet) COMP
 JV1380  MODELED GRAVITY -    980,083.5   (mgal)                       NAVD 88
 JV1380
 JV1380  VERT ORDER      -  FIRST     CLASS II
 JV1380
 JV1380.The horizontal coordinates were established by autonomous hand held GPS
 JV1380.observations and have an estimated accuracy of +/- 10 meters.
 JV1380
 JV1380.The orthometric height was determined by differential leveling and
 JV1380.adjusted by the NATIONAL GEODETIC SURVEY
 JV1380.in June 1991.
 JV1380
 JV1380.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1380.GEOID18 height accuracy estimate available here.
 JV1380
 JV1380.Click photographs - Photos may exist for this station.
 JV1380
 JV1380.The dynamic height is computed by dividing the NAVD 88
 JV1380.geopotential number by the normal gravity value computed on the
 JV1380.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1380.degrees latitude (g = 980.6199 gals.).
 JV1380
 JV1380.The modeled gravity was interpolated from observed gravity values.
 JV1380
 JV1380;                    North         East    Units  Estimated Accuracy
 JV1380;SPC MD       -   156,936.      424,972.      MT  (+/- 10 meters HH2 GPS)
 JV1380
 JV1380_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5197027057(NAD 83)
 JV1380
 JV1380                          SUPERSEDED SURVEY CONTROL
 JV1380
 JV1380  NGVD 29 (11/26/84)   51.927  (m)          170.36   (f) ADJUSTED    1 2
 JV1380
 JV1380.Superseded values are not recommended for survey control.
 JV1380
 JV1380.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1380.See file dsdata.pdf to determine how the superseded data were derived.
 JV1380
 JV1380_MARKER: B = BOLT
 JV1380_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1380_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1380+STABILITY: SURFACE MOTION
 JV1380
 JV1380  HISTORY     - Date     Condition        Report By
 JV1380  HISTORY     - 1941     MONUMENTED       CGS
 JV1380  HISTORY     - 1942     GOOD             CGS
 JV1380
 JV1380                          STATION DESCRIPTION
 JV1380
 JV1380'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1380'0.5 MI SW FROM ODENTON.
 JV1380'ABOUT 0.5 MILE SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV1380'STATION AT ODENTON, ANNE ARUNDEL COUNTY, 47 FEET WEST OF THE
 JV1380'NORTHERNMOST POWER-TRANSMISSION LINE TOWER, AT MILEAGE 114.22,
 JV1380'ABOUT 78 YARDS SOUTH OF A GATE IN A FENCE LEADING WEST, AND 38
 JV1380'FEET NORTHWEST OF THE NORTHWEST RAIL OF THE NORTHWEST TRACK.  AN
 JV1380'IRON BOLT, SET IN THE TOP OF A CONCRETE POST MARKED U S 167.
 JV1380
 JV1380                          STATION RECOVERY (1942)
 JV1380
 JV1380'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV1380'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1410 ***********************************************************************
 HV1410  DESIGNATION -  1670 WSSC
 HV1410  PID         -  HV1410
 HV1410  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1410  COUNTRY     -  US
 HV1410  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1410
 HV1410                         *CURRENT SURVEY CONTROL
 HV1410  ______________________________________________________________________
 HV1410* NAD 83(1986) POSITION- 38 57 42.8    (N) 076 59 47.5    (W)   HD_HELD2
 HV1410* NAVD 88 ORTHO HEIGHT -    55.08  (+/-2cm)      180.7   (feet) VERTCON3
 HV1410  ______________________________________________________________________
 HV1410  GEOID HEIGHT    -        -32.037 (meters)                     GEOID18
 HV1410  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1410
 HV1410.The horizontal coordinates were established by autonomous hand held GPS
 HV1410.observations and have an estimated accuracy of +/- 10 meters.
 HV1410
 HV1410.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1410.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1410
 HV1410.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1410.GEOID18 height accuracy estimate available here.
 HV1410
 HV1410.The vertical order pertains to the NGVD 29 superseded value.
 HV1410
 HV1410.Click photographs - Photos may exist for this station.
 HV1410
 HV1410;                    North         East    Units  Estimated Accuracy
 HV1410;SPC MD       -   143,776.      400,301.      MT  (+/- 10 meters HH2 GPS)
 HV1410
 HV1410_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2701714442(NAD 83)
 HV1410
 HV1410                          SUPERSEDED SURVEY CONTROL
 HV1410
 HV1410  NGVD 29 (11/26/84)   55.297  (m)          181.42   (f) ADJUSTED    2 0
 HV1410
 HV1410.Superseded values are not recommended for survey control.
 HV1410
 HV1410.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1410.See file dsdata.pdf to determine how the superseded data were derived.
 HV1410
 HV1410_MARKER: DD = SURVEY DISK
 HV1410_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1410_SP_SET: CHIMNEY
 HV1410_STAMPING: 1670
 HV1410_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1410_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1410+SATELLITE: SATELLITE OBSERVATIONS - March 18, 2004
 HV1410
 HV1410  HISTORY     - Date     Condition        Report By
 HV1410  HISTORY     - UNK      MONUMENTED       WSSC
 HV1410  HISTORY     - 1939     GOOD             WSSC
 HV1410  HISTORY     - 20040318 GOOD             GEOCAC
 HV1410
 HV1410                          STATION DESCRIPTION
 HV1410
 HV1410'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1410'0.6 MI NE FROM CHILLUM STATION.
 HV1410'ON RIGGS ROAD, JUST NORTH OF THE MARYLAND-D.C. LINE, AT THE
 HV1410'FOURTH HOUSE NORTH OF THE LINE, AND IN THE CHIMNEY ON THE WEST
 HV1410'SIDE OF THE HOUSE.
 HV1410
 HV1410                          STATION RECOVERY (2004)
 HV1410
 HV1410'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV1410'THE HOUSE MENTIONED IN THE 1939 DESCRIPTION IS 5806 RIGGS ROAD, AT THE
 HV1410'CORNER OF BERKSHIRE DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2340 ***********************************************************************
 HV2340  DESIGNATION -  1671 WSSC
 HV2340  PID         -  HV2340
 HV2340  STATE/COUNTY-  MD/MONTGOMERY
 HV2340  COUNTRY     -  US
 HV2340  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2340
 HV2340                         *CURRENT SURVEY CONTROL
 HV2340  ______________________________________________________________________
 HV2340* NAD 83(1986) POSITION- 38 58 45.     (N) 077 00 34.     (W)   SCALED
 HV2340* NAVD 88 ORTHO HEIGHT -    78.746 (meters)      258.35  (feet) ADJUSTED
 HV2340  ______________________________________________________________________
 HV2340  GEOID HEIGHT    -        -32.007 (meters)                     GEOID18
 HV2340  DYNAMIC HEIGHT  -         78.704 (meters)      258.21  (feet) COMP
 HV2340  MODELED GRAVITY -    980,093.3   (mgal)                       NAVD 88
 HV2340
 HV2340  VERT ORDER      -  FIRST     CLASS II
 HV2340
 HV2340.The horizontal coordinates were scaled from a map and have
 HV2340.an estimated accuracy of +/- 6 seconds.
 HV2340
 HV2340.The orthometric height was determined by differential leveling and
 HV2340.adjusted by the NATIONAL GEODETIC SURVEY
 HV2340.in June 1991.
 HV2340
 HV2340.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2340.GEOID18 height accuracy estimate available here.
 HV2340
 HV2340.Click photographs - Photos may exist for this station.
 HV2340
 HV2340.The dynamic height is computed by dividing the NAVD 88
 HV2340.geopotential number by the normal gravity value computed on the
 HV2340.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2340.degrees latitude (g = 980.6199 gals.).
 HV2340
 HV2340.The modeled gravity was interpolated from observed gravity values.
 HV2340
 HV2340;                    North         East    Units  Estimated Accuracy
 HV2340;SPC MD       -   145,690.      399,180.      MT  (+/- 180 meters Scaled)
 HV2340
 HV2340_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ259163(NAD 83)
 HV2340
 HV2340                          SUPERSEDED SURVEY CONTROL
 HV2340
 HV2340  NGVD 29 (11/26/84)   78.957  (m)          259.04   (f) ADJUSTED    1 2
 HV2340
 HV2340.Superseded values are not recommended for survey control.
 HV2340
 HV2340.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2340.See file dsdata.pdf to determine how the superseded data were derived.
 HV2340
 HV2340_MARKER: DD = SURVEY DISK
 HV2340_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2340_STAMPING: 1671
 HV2340_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2340
 HV2340  HISTORY     - Date     Condition        Report By
 HV2340  HISTORY     - UNK      MONUMENTED       WSSC
 HV2340  HISTORY     - 1951     GOOD             CGS
 HV2340
 HV2340                          STATION DESCRIPTION
 HV2340
 HV2340'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2340'IN TAKOMA PARK.
 HV2340'AT THE NORTHWEST CORNER OF THE INTERSECTION OF PARK AVENUE AND
 HV2340'WILLOW AVENUE, 35 FEET NORTH OF THE CENTERLINE OF WILLOW AVENUE,
 HV2340'IN THE PARKING, AND IN A LINE OF TREES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2334 ***********************************************************************
 HV2334  DESIGNATION -  1672
 HV2334  PID         -  HV2334
 HV2334  STATE/COUNTY-  MD/MONTGOMERY
 HV2334  COUNTRY     -  US
 HV2334  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2334
 HV2334                         *CURRENT SURVEY CONTROL
 HV2334  ______________________________________________________________________
 HV2334* NAD 83(1986) POSITION- 38 59 24.3    (N) 077 01 22.7    (W)   HD_HELD2
 HV2334* NAVD 88 ORTHO HEIGHT -   105.898 (meters)      347.43  (feet) ADJUSTED
 HV2334  ______________________________________________________________________
 HV2334  GEOID HEIGHT    -        -31.980 (meters)                     GEOID18
 HV2334  DYNAMIC HEIGHT  -        105.841 (meters)      347.25  (feet) COMP
 HV2334  MODELED GRAVITY -    980,086.4   (mgal)                       NAVD 88
 HV2334
 HV2334  VERT ORDER      -  SECOND    CLASS 0
 HV2334
 HV2334.The horizontal coordinates were established by autonomous hand held GPS
 HV2334.observations and have an estimated accuracy of +/- 10 meters.
 HV2334
 HV2334.The orthometric height was determined by differential leveling and
 HV2334.adjusted by the NATIONAL GEODETIC SURVEY
 HV2334.in June 1991.
 HV2334
 HV2334.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2334.GEOID18 height accuracy estimate available here.
 HV2334
 HV2334.Click photographs - Photos may exist for this station.
 HV2334
 HV2334.The dynamic height is computed by dividing the NAVD 88
 HV2334.geopotential number by the normal gravity value computed on the
 HV2334.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2334.degrees latitude (g = 980.6199 gals.).
 HV2334
 HV2334.The modeled gravity was interpolated from observed gravity values.
 HV2334
 HV2334;                    North         East    Units  Estimated Accuracy
 HV2334;SPC MD       -   146,906.      398,010.      MT  (+/- 10 meters HH2 GPS)
 HV2334
 HV2334_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2479517622(NAD 83)
 HV2334
 HV2334                          SUPERSEDED SURVEY CONTROL
 HV2334
 HV2334  NGVD 29 (11/26/84)  106.110  (m)          348.13   (f) ADJUSTED    2 0
 HV2334
 HV2334.Superseded values are not recommended for survey control.
 HV2334
 HV2334.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2334.See file dsdata.pdf to determine how the superseded data were derived.
 HV2334
 HV2334_MARKER: DB = BENCH MARK DISK
 HV2334_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2334_STAMPING: 1672
 HV2334_MARK LOGO: WSSC
 HV2334_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2334
 HV2334  HISTORY     - Date     Condition        Report By
 HV2334  HISTORY     - UNK      MONUMENTED       WSSC
 HV2334  HISTORY     - 1951     GOOD             CGS
 HV2334  HISTORY     - 20040320 GOOD             GEOCAC
 HV2334
 HV2334                          STATION DESCRIPTION
 HV2334
 HV2334'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2334'0.2 MI E FROM SILVER SPRING.
 HV2334'ABOUT 0.2 MILE EAST ALONG SLIGO AVENUE FROM THE BALTIMORE AND
 HV2334'OHIO RAILROAD STATION AT SILVER SPRING, MONTGOMERY COUNTY, IN THE
 HV2334'SOUTHWEST ANGLE OF THE INTERSECTION OF SLIGO AVENUE AND WOODBURY
 HV2334'DRIVE, ABOUT 25 FEET SOUTH OF SLIGO AVENUE, BETWEEN THE SIDEWALK
 HV2334'AND CURB ON THE WEST SIDE OF WOODBURY DRIVE, 69.1 FEET NORTHWEST
 HV2334'OF THE SOUTHWEST CORNER OF THE HOUSE IN THE SOUTHEAST ANGLE OF
 HV2334'THE INTERSECTION, 64.9 FEET WEST OF THE NORTHWEST CORNER OF THE
 HV2334'FRONT PORCH OF THE SAME HOUSE, 60.7 FEET NORTHEAST OF THE
 HV2334'NORTHEAST CORNER OF THE SIDE PORCH OF THE HOUSE IN THE
 HV2334'SOUTHWEST ANGLE OF THE INTERSECTION, 58.4 FEET EAST OF THE
 HV2334'NORTHEAST CORNER OF THE SAME HOUSE, AND ABOUT FLUSH WITH
 HV2334'THE GROUND SURFACE.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV2334'BRONZE DISK, STAMPED 1672 AND SET IN THE TOP OF A 2-INCH IRON
 HV2334'PIPE.
 HV2334
 HV2334                          STATION RECOVERY (2004)
 HV2334
 HV2334'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV2334'LOCATED IN THE GRASSY STRIP BETWEEN THE CURB AND SIDEWALK IN FRONT OF
 HV2334'RESIDENCE AT 833 WOODBURY DRIVE. STATION IS APPROXIMATELY 5.8 FEET
 HV2334'NORTH OF A TREE, APPROXIMATELY 3.8 FEET EAST OF THE EAST EDGE OF THE
 HV2334'SIDEWALK, APPROXIMATELY 3.2 FEET WEST OF THE WEST EDGE OF THE CURB,
 HV2334'AND APPROXIMATELY 18.3 FEET NORTH OF THE EXTENDED CENTERLINE OF THE
 HV2334'WALKWAY LEADING TO THE FRONT DOOR OF THE HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2786 ***********************************************************************
 JV2786  DESIGNATION -  1673
 JV2786  PID         -  JV2786
 JV2786  STATE/COUNTY-  MD/MONTGOMERY
 JV2786  COUNTRY     -  US
 JV2786  USGS QUAD   -  KENSINGTON (2016)
 JV2786
 JV2786                         *CURRENT SURVEY CONTROL
 JV2786  ______________________________________________________________________
 JV2786* NAD 83(1986) POSITION- 39 00 32.     (N) 077 02 40.     (W)   SCALED
 JV2786* NAVD 88 ORTHO HEIGHT -   116.287 (meters)      381.52  (feet) ADJUSTED
 JV2786  ______________________________________________________________________
 JV2786  GEOID HEIGHT    -        -31.935 (meters)                     GEOID18
 JV2786  DYNAMIC HEIGHT  -        116.224 (meters)      381.31  (feet) COMP
 JV2786  MODELED GRAVITY -    980,086.0   (mgal)                       NAVD 88
 JV2786
 JV2786  VERT ORDER      -  SECOND    CLASS 0
 JV2786
 JV2786.The horizontal coordinates were scaled from a map and have
 JV2786.an estimated accuracy of +/- 6 seconds.
 JV2786
 JV2786.The orthometric height was determined by differential leveling and
 JV2786.adjusted by the NATIONAL GEODETIC SURVEY
 JV2786.in June 1991.
 JV2786
 JV2786.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2786.GEOID18 height accuracy estimate available here.
 JV2786
 JV2786.Click photographs - Photos may exist for this station.
 JV2786
 JV2786.The dynamic height is computed by dividing the NAVD 88
 JV2786.geopotential number by the normal gravity value computed on the
 JV2786.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2786.degrees latitude (g = 980.6199 gals.).
 JV2786
 JV2786.The modeled gravity was interpolated from observed gravity values.
 JV2786
 JV2786;                    North         East    Units  Estimated Accuracy
 JV2786;SPC MD       -   148,990.      396,150.      MT  (+/- 180 meters Scaled)
 JV2786
 JV2786_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ229197(NAD 83)
 JV2786
 JV2786                          SUPERSEDED SURVEY CONTROL
 JV2786
 JV2786  NGVD 29 (11/26/84)  116.504  (m)          382.23   (f) ADJUSTED    2 0
 JV2786
 JV2786.Superseded values are not recommended for survey control.
 JV2786
 JV2786.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2786.See file dsdata.pdf to determine how the superseded data were derived.
 JV2786
 JV2786_MARKER: DD = SURVEY DISK
 JV2786_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2786_SP_SET: BUILDING
 JV2786_STAMPING: 1673
 JV2786_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2786_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2786+SATELLITE: SATELLITE OBSERVATIONS - June 10, 2006
 JV2786
 JV2786  HISTORY     - Date     Condition        Report By
 JV2786  HISTORY     - UNK      MONUMENTED       WSSC
 JV2786  HISTORY     - 1958     GOOD             CGS
 JV2786  HISTORY     - 1987     GOOD             USPSQD
 JV2786  HISTORY     - 20060610 GOOD             GEOCAC
 JV2786
 JV2786                          STATION DESCRIPTION
 JV2786
 JV2786'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2786'AT MONTGOMERY HILLS.
 JV2786'AT MONTGOMERY HILLS, AT THE MONTGOMERY HILLS JUNIOR HIGH SCHOOL,
 JV2786'SET VERTICALLY IN THE NORTH BRICK WALL AND NEAR THE NORTHEAST
 JV2786'CORNER OF THE GYMNASIUM BUILDING, (OLD BUILDING PORTION WITH
 JV2786'LETTERS MCMXXXVI ON TOP OF BUILDING) 18.7 FEET WEST OF THE
 JV2786'NORTHEAST CORNER OF THE BUILDING AND 4.1 FEET ABOVE THE LEVEL
 JV2786'OF THE GROUND.
 JV2786
 JV2786                          STATION RECOVERY (1987)
 JV2786
 JV2786'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2786'RECOVERED IN GOOD CONDITION.
 JV2786
 JV2786                          STATION RECOVERY (2006)
 JV2786
 JV2786'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JV2786'STATION DISK IS LARGELY HIDDEN BEHIND THREE-INCH GAS PIPE THAT RUNS
 JV2786'ALONG SURFACE. STATION MAY NOT BE ACCESSIBLE FOR USE.
 JV2786'
 JV2786'LOCATION IS AS DESCRIBED, EXCEPT STATION IS ABOUT 5.5 FEET ABOVE
 JV2786'ASPHALT SURFACE.
 JV2786'
 JV2786'FORMER JUNIOR HIGH SCHOOL IS NOW YESHIVA OF GREATER WASHINGTON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2595 ***********************************************************************
 JV2595  DESIGNATION -  1674 WSSC
 JV2595  PID         -  JV2595
 JV2595  STATE/COUNTY-  MD/MONTGOMERY
 JV2595  COUNTRY     -  US
 JV2595  USGS QUAD   -  GAITHERSBURG (2016)
 JV2595
 JV2595                         *CURRENT SURVEY CONTROL
 JV2595  ______________________________________________________________________
 JV2595* NAD 83(1986) POSITION- 39 12 47.     (N) 077 08 35.     (W)   SCALED
 JV2595* NAVD 88 ORTHO HEIGHT -   185.23  (+/-2cm)      607.7   (feet) VERTCON3
 JV2595  ______________________________________________________________________
 JV2595  GEOID HEIGHT    -        -31.768 (meters)                     GEOID18
 JV2595  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2595
 JV2595.The horizontal coordinates were scaled from a map and have
 JV2595.an estimated accuracy of +/- 6 seconds.
 JV2595
 JV2595.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2595.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2595
 JV2595.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2595.GEOID18 height accuracy estimate available here.
 JV2595
 JV2595.The vertical order pertains to the NGVD 29 superseded value.
 JV2595
 JV2595.Click photographs - Photos may exist for this station.
 JV2595
 JV2595;                    North         East    Units  Estimated Accuracy
 JV2595;SPC MD       -   171,670.      387,650.      MT  (+/- 180 meters Scaled)
 JV2595
 JV2595_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ149426(NAD 83)
 JV2595
 JV2595                          SUPERSEDED SURVEY CONTROL
 JV2595
 JV2595  NGVD 29 (11/26/84)  185.432  (m)          608.37   (f) ADJUSTED    2 0
 JV2595
 JV2595.Superseded values are not recommended for survey control.
 JV2595
 JV2595.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2595.See file dsdata.pdf to determine how the superseded data were derived.
 JV2595
 JV2595_MARKER: DD = SURVEY DISK
 JV2595_SETTING: 0 = UNSPECIFIED SETTING
 JV2595_SP_SET: IRON PIPE
 JV2595_STAMPING: 1674
 JV2595_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2595
 JV2595  HISTORY     - Date     Condition        Report By
 JV2595  HISTORY     - UNK      MONUMENTED       WSSC
 JV2595  HISTORY     - 1946     GOOD             WSSC
 JV2595
 JV2595                          STATION DESCRIPTION
 JV2595
 JV2595'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2595'AT LAYTONSVILLE.
 JV2595'AT LAYTONSVILLE, MONTGOMERY COUNTY, ABOUT 300 FEET NORTH OF THE
 JV2595'INTERSECTION OF STATE HIGHWAYS 108 AND 124, NEAR THE METHODIST
 JV2595'CHURCH AND CEMETERY, 76.5 FEET WEST OF THE CENTER LINE OF
 JV2595'STATE HIGHWAY 108, 62.6 FEET NORTH-NORTHWEST OF THE SOUTHWEST
 JV2595'CORNER OF THE CHURCH, 21.7 FEET NORTHWEST OF THE NORTHWEST CORNER,
 JV2595'AND 24.1 FEET WEST OF A 6-INCH LOCUST TREE.  A WASHINGTON SUBURBAN
 JV2595'SANITARY DISTRICT STANDARD DISK, STAMPED 1674 AND SET IN THE
 JV2595'TOP OF A CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2772 ***********************************************************************
 JV2772  DESIGNATION -  1674 WSSC RESET 1958
 JV2772  PID         -  JV2772
 JV2772  STATE/COUNTY-  MD/MONTGOMERY
 JV2772  COUNTRY     -  US
 JV2772  USGS QUAD   -  GAITHERSBURG (2016)
 JV2772
 JV2772                         *CURRENT SURVEY CONTROL
 JV2772  ______________________________________________________________________
 JV2772* NAD 83(1986) POSITION- 39 12 47.     (N) 077 08 35.     (W)   SCALED
 JV2772* NAVD 88 ORTHO HEIGHT -   184.99  (+/-2cm)      606.9   (feet) VERTCON3
 JV2772  ______________________________________________________________________
 JV2772  GEOID HEIGHT    -        -31.768 (meters)                     GEOID18
 JV2772  VERT ORDER      -  THIRD (See Below)
 JV2772
 JV2772.The horizontal coordinates were scaled from a map and have
 JV2772.an estimated accuracy of +/- 6 seconds.
 JV2772
 JV2772.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2772.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2772
 JV2772.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2772.GEOID18 height accuracy estimate available here.
 JV2772
 JV2772.The vertical order pertains to the NGVD 29 superseded value.
 JV2772
 JV2772.Click photographs - Photos may exist for this station.
 JV2772
 JV2772;                    North         East    Units  Estimated Accuracy
 JV2772;SPC MD       -   171,670.      387,650.      MT  (+/- 180 meters Scaled)
 JV2772
 JV2772_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ149426(NAD 83)
 JV2772
 JV2772                          SUPERSEDED SURVEY CONTROL
 JV2772
 JV2772  NGVD 29 (??/??/??)  185.20   (m)          607.6    (f) RESET       3  
 JV2772
 JV2772.Superseded values are not recommended for survey control.
 JV2772
 JV2772.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2772.See file dsdata.pdf to determine how the superseded data were derived.
 JV2772
 JV2772_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION
 JV2772_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV2772_STAMPING: 1674 RESET 1958
 JV2772_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2772
 JV2772  HISTORY     - Date     Condition        Report By
 JV2772  HISTORY     - 1958     MONUMENTED       WSSC
 JV2772
 JV2772                          STATION DESCRIPTION
 JV2772
 JV2772'DESCRIBED BY WASH SUBURB SAN COMM 1958
 JV2772'AT LAYTONSVILLE.
 JV2772'IN COMPLIANCE WITH REQUEST MADE BY REVEREND JAMES C. HASKIN,
 JV2772'BENCH MARK 1674 (W.S.S.D.) WAS RELOCATED ON 12 MAY 1958.  THE
 JV2772'ORIGINAL MARK WAS LOWERED 0.232 METER AND RELOCATED AT THE
 JV2772'APPROXIMATE ORIGINAL LOCATION SITE.  THE MARK IS SITUATED 77.60
 JV2772'FEET WEST-SOUTHWEST OF CENTER LINE OF STATE HIGHWAY 108, 73.03
 JV2772'FEET NORTHEAST OF NORTHEAST CORNER OF ST. PAULS METHODIST
 JV2772'CHURCH AND 70.24 FEET SOUTH-SOUTHEAST OF THE SOUTHERN MOST
 JV2772'GATE POST OF ENTRANCE INTO CEMETERY.  A CONCRETE COLLAR WAS
 JV2772'POURED AROUND THE UPPER PORTION OF THE PIPE AS REINFORCEMENT.
 JV2772'THE PIPE AND DISK IS FLUSH WITH CONCRETE SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1433 ***********************************************************************
 JV1433  DESIGNATION -  1675 WSSC
 JV1433  PID         -  JV1433
 JV1433  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1433  COUNTRY     -  US
 JV1433  USGS QUAD   -  BELTSVILLE (2016)
 JV1433
 JV1433                         *CURRENT SURVEY CONTROL
 JV1433  ______________________________________________________________________
 JV1433* NAD 83(1986) POSITION- 39 00 12.     (N) 076 57 36.     (W)   SCALED
 JV1433* NAVD 88 ORTHO HEIGHT -    57.742 (meters)      189.44  (feet) ADJUSTED
 JV1433  ______________________________________________________________________
 JV1433  GEOID HEIGHT    -        -32.072 (meters)                     GEOID18
 JV1433  DYNAMIC HEIGHT  -         57.712 (meters)      189.34  (feet) COMP
 JV1433  MODELED GRAVITY -    980,103.8   (mgal)                       NAVD 88
 JV1433
 JV1433  VERT ORDER      -  SECOND    CLASS 0
 JV1433
 JV1433.The horizontal coordinates were scaled from a map and have
 JV1433.an estimated accuracy of +/- 6 seconds.
 JV1433
 JV1433.The orthometric height was determined by differential leveling and
 JV1433.adjusted by the NATIONAL GEODETIC SURVEY
 JV1433.in June 1991.
 JV1433
 JV1433.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1433.GEOID18 height accuracy estimate available here.
 JV1433
 JV1433.Click photographs - Photos may exist for this station.
 JV1433
 JV1433.The dynamic height is computed by dividing the NAVD 88
 JV1433.geopotential number by the normal gravity value computed on the
 JV1433.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1433.degrees latitude (g = 980.6199 gals.).
 JV1433
 JV1433.The modeled gravity was interpolated from observed gravity values.
 JV1433
 JV1433;                    North         East    Units  Estimated Accuracy
 JV1433;SPC MD       -   148,380.      403,470.      MT  (+/- 180 meters Scaled)
 JV1433
 JV1433_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ302189(NAD 83)
 JV1433
 JV1433                          SUPERSEDED SURVEY CONTROL
 JV1433
 JV1433  NGVD 29 (11/26/84)   57.960  (m)          190.16   (f) ADJUSTED    2 0
 JV1433
 JV1433.Superseded values are not recommended for survey control.
 JV1433
 JV1433.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1433.See file dsdata.pdf to determine how the superseded data were derived.
 JV1433
 JV1433_MARKER: DD = SURVEY DISK
 JV1433_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1433_STAMPING: 1675
 JV1433_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1433
 JV1433  HISTORY     - Date     Condition        Report By
 JV1433  HISTORY     - UNK      MONUMENTED       WSSC
 JV1433  HISTORY     - 1951     GOOD             CGS
 JV1433
 JV1433                          STATION DESCRIPTION
 JV1433
 JV1433'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1433'0.6 MI E FROM ADELPHI.
 JV1433'ABOUT 0.6 MILE EAST ALONG METZROTT ROAD FROM THE INTERSECTION
 JV1433'OF RIGGS ROAD AT ADELPHI, PRINCE GEORGES COUNTY, ON THE CENTER
 JV1433'LINE OF THE POWER TRANSMISSION LINE RIGHT-OF-WAY, 75 FEET
 JV1433'NORTH OF METZROTT ROAD, AT TOWER 104, 16.4 FEET SOUTHEAST OF A
 JV1433'CROSS IN THE SOUTHWEST ANCHOR BOLT, AND 16.0 FEET SOUTHWEST OF A
 JV1433'CROSS IN THE SOUTHEAST ANCHOR BOLT.  A WASHINGTON SUBURBAN
 JV1433'SANITARY DISTRICT BRONZE DISK, STAMPED 1675 AND FASTENED TO THE
 JV1433'TOP OF AN IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1440 ***********************************************************************
 JV1440  DESIGNATION -  1677
 JV1440  PID         -  JV1440
 JV1440  STATE/COUNTY-  MD/MONTGOMERY
 JV1440  COUNTRY     -  US
 JV1440  USGS QUAD   -  BELTSVILLE (2016)
 JV1440
 JV1440                         *CURRENT SURVEY CONTROL
 JV1440  ______________________________________________________________________
 JV1440* NAD 83(1986) POSITION- 39 03 00.7    (N) 076 58 42.5    (W)   HD_HELD2
 JV1440* NAVD 88 ORTHO HEIGHT -    82.775 (meters)      271.57  (feet) ADJUSTED
 JV1440  ______________________________________________________________________
 JV1440  GEOID HEIGHT    -        -32.017 (meters)                     GEOID18
 JV1440  DYNAMIC HEIGHT  -         82.730 (meters)      271.42  (feet) COMP
 JV1440  MODELED GRAVITY -    980,090.4   (mgal)                       NAVD 88
 JV1440
 JV1440  VERT ORDER      -  SECOND    CLASS 0
 JV1440
 JV1440.The horizontal coordinates were established by autonomous hand held GPS
 JV1440.observations and have an estimated accuracy of +/- 10 meters.
 JV1440
 JV1440.The orthometric height was determined by differential leveling and
 JV1440.adjusted by the NATIONAL GEODETIC SURVEY
 JV1440.in June 1991.
 JV1440
 JV1440.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1440.GEOID18 height accuracy estimate available here.
 JV1440
 JV1440.Click photographs - Photos may exist for this station.
 JV1440
 JV1440.The dynamic height is computed by dividing the NAVD 88
 JV1440.geopotential number by the normal gravity value computed on the
 JV1440.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1440.degrees latitude (g = 980.6199 gals.).
 JV1440
 JV1440.The modeled gravity was interpolated from observed gravity values.
 JV1440
 JV1440;                    North         East    Units  Estimated Accuracy
 JV1440;SPC MD       -   153,579.      401,863.      MT  (+/- 10 meters HH2 GPS)
 JV1440
 JV1440_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2879424209(NAD 83)
 JV1440
 JV1440                          SUPERSEDED SURVEY CONTROL
 JV1440
 JV1440  NGVD 29 (11/26/84)   82.994  (m)          272.29   (f) ADJUSTED    2 0
 JV1440
 JV1440.Superseded values are not recommended for survey control.
 JV1440
 JV1440.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1440.See file dsdata.pdf to determine how the superseded data were derived.
 JV1440
 JV1440_MARKER: DB = BENCH MARK DISK
 JV1440_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1440_SP_SET: BRIDGE
 JV1440_STAMPING: 1677
 JV1440_MARK LOGO: WSSC
 JV1440_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1440_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1440+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2006
 JV1440
 JV1440  HISTORY     - Date     Condition        Report By
 JV1440  HISTORY     - UNK      MONUMENTED       WSSC
 JV1440  HISTORY     - 1952     GOOD             CGS
 JV1440  HISTORY     - 20060311 GOOD             NGS
 JV1440
 JV1440                          STATION DESCRIPTION
 JV1440
 JV1440'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV1440'0.9 MI NE FROM WHITEOAK.
 JV1440'0.9 MILE NORTHEAST ALONG COLUMBIA ROAD (STATE HIGHWAY 196) FROM
 JV1440'THE JUNCTION OF COLESVILLE ROAD (U.S. HIGHWAY 29) AT WHITEOAK,
 JV1440'MONTGOMERY COUNTY, AT THE SOUTHWEST END OF THE BRIDGE OVER PAINT
 JV1440'BRANCH, AND IN THE TOP OF THE NORTHWEST END OF THE ABUTMENT AT
 JV1440'THE JUNCTION OF THE WING WALL.  A WASHINGTON SUBURBAN SANITARY
 JV1440'DISTRICT BRONZE DISK STAMPED 1677.
 JV1440
 JV1440                          STATION RECOVERY (2006)
 JV1440
 JV1440'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV1440'MARK RECOVERED IN GOOD CONDITION.  ROAD NAME HAS BEEN CHANGED TO OLD
 JV1440'COLUMBIA PIKE.  BRIDGE IS NOW A PEDESTRIAN WALKWAY OVER PAINT BRANCH
 JV1440'AND IS NO LONGER ACCESSIBLE FOR VEHICLE TRAFFIC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1221 ***********************************************************************
 HV1221  DESIGNATION -  1679 WSSC
 HV1221  PID         -  HV1221
 HV1221  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1221  COUNTRY     -  US
 HV1221  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1221
 HV1221                         *CURRENT SURVEY CONTROL
 HV1221  ______________________________________________________________________
 HV1221* NAD 83(1986) POSITION- 38 53 04.     (N) 076 54 48.     (W)   SCALED
 HV1221* NAVD 88 ORTHO HEIGHT -    40.754 (meters)      133.71  (feet) ADJUSTED
 HV1221  ______________________________________________________________________
 HV1221  GEOID HEIGHT    -        -32.331 (meters)                     GEOID18
 HV1221  DYNAMIC HEIGHT  -         40.731 (meters)      133.63  (feet) COMP
 HV1221  MODELED GRAVITY -    980,079.9   (mgal)                       NAVD 88
 HV1221
 HV1221  VERT ORDER      -  SECOND    CLASS 0
 HV1221
 HV1221.The horizontal coordinates were scaled from a map and have
 HV1221.an estimated accuracy of +/- 6 seconds.
 HV1221
 HV1221.The orthometric height was determined by differential leveling and
 HV1221.adjusted by the NATIONAL GEODETIC SURVEY
 HV1221.in June 1991.
 HV1221
 HV1221.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1221.GEOID18 height accuracy estimate available here.
 HV1221
 HV1221.Click photographs - Photos may exist for this station.
 HV1221
 HV1221.The dynamic height is computed by dividing the NAVD 88
 HV1221.geopotential number by the normal gravity value computed on the
 HV1221.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1221.degrees latitude (g = 980.6199 gals.).
 HV1221
 HV1221.The modeled gravity was interpolated from observed gravity values.
 HV1221
 HV1221;                    North         East    Units  Estimated Accuracy
 HV1221;SPC MD       -   135,180.      407,520.      MT  (+/- 180 meters Scaled)
 HV1221
 HV1221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ340056(NAD 83)
 HV1221
 HV1221                          SUPERSEDED SURVEY CONTROL
 HV1221
 HV1221  NGVD 29 (11/26/84)   41.007  (m)          134.54   (f) ADJUSTED    2 0
 HV1221
 HV1221.Superseded values are not recommended for survey control.
 HV1221
 HV1221.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1221.See file dsdata.pdf to determine how the superseded data were derived.
 HV1221
 HV1221_MARKER: DD = SURVEY DISK
 HV1221_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1221_SP_SET: SCHOOL BUILDING
 HV1221_STAMPING: 1679
 HV1221_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1221
 HV1221  HISTORY     - Date     Condition        Report By
 HV1221  HISTORY     - UNK      MONUMENTED       WSSC
 HV1221  HISTORY     - 1944     GOOD             WSSC
 HV1221
 HV1221                          STATION DESCRIPTION
 HV1221
 HV1221'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1221'AT CAPITOL HEIGHTS.
 HV1221'AT THE SOUTHEAST CORNER OF THE INTERSECTION OF CENTRAL AVENUE
 HV1221'AND SIXTY-FIRST STREET, AT CAPITOL HEIGHTS SCHOOL, IN THE EAST
 HV1221'WALL OF AN OFFSET IN THE FRONT OF THE BUILDING, 1 FOOT SOUTH
 HV1221'OF THE NORTHEAST CORNER OF THE OFFSET, AND 1.5 FEET ABOVE THE
 HV1221'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2349 ***********************************************************************
 HV2349  DESIGNATION -  1683 WSSC
 HV2349  PID         -  HV2349
 HV2349  STATE/COUNTY-  MD/MONTGOMERY
 HV2349  COUNTRY     -  US
 HV2349  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2349
 HV2349                         *CURRENT SURVEY CONTROL
 HV2349  ______________________________________________________________________
 HV2349* NAD 83(1986) POSITION- 38 58 41.     (N) 077 00 11.     (W)   SCALED
 HV2349* NAVD 88 ORTHO HEIGHT -    84.99  (+/-2cm)      278.8   (feet) VERTCON3
 HV2349  ______________________________________________________________________
 HV2349  GEOID HEIGHT    -        -32.018 (meters)                     GEOID18
 HV2349  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV2349
 HV2349.The horizontal coordinates were scaled from a map and have
 HV2349.an estimated accuracy of +/- 6 seconds.
 HV2349
 HV2349.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2349.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2349
 HV2349.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2349.GEOID18 height accuracy estimate available here.
 HV2349
 HV2349.The vertical order pertains to the NGVD 29 superseded value.
 HV2349
 HV2349.Click photographs - Photos may exist for this station.
 HV2349
 HV2349;                    North         East    Units  Estimated Accuracy
 HV2349;SPC MD       -   145,570.      399,740.      MT  (+/- 180 meters Scaled)
 HV2349
 HV2349_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ264162(NAD 83)
 HV2349
 HV2349                          SUPERSEDED SURVEY CONTROL
 HV2349
 HV2349  NGVD 29 (11/26/84)   85.211  (m)          279.56   (f) ADJUSTED    2 0
 HV2349
 HV2349.Superseded values are not recommended for survey control.
 HV2349
 HV2349.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2349.See file dsdata.pdf to determine how the superseded data were derived.
 HV2349
 HV2349_MARKER: DD = SURVEY DISK
 HV2349_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2349_STAMPING: 1683
 HV2349_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2349
 HV2349  HISTORY     - Date     Condition        Report By
 HV2349  HISTORY     - UNK      MONUMENTED       WSSC
 HV2349  HISTORY     - 1952     GOOD             CGS
 HV2349
 HV2349                          STATION DESCRIPTION
 HV2349
 HV2349'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV2349'AT TAKOMA PARK.
 HV2349'IN TAKOMA PARK, MONTGOMERY COUNTY, AT 317 ETHAN ALLAN AVENUE
 HV2349'(STATE HIGHWAY 410), IN THE AREA BETWEEN THE WALK AND THE
 HV2349'CURB, 35.97 FEET NORTH OF THE EAST CORNER OF THE HOUSE, 32.17
 HV2349'FEET NORTHEAST OF THE NORTH CORNER OF THE PORCH, AND 30-1/2
 HV2349'FEET WEST ACROSS THE AVENUE FROM A POLE.  A WASHINGTON SUBURBAN
 HV2349'SANITARY DISTRICT BRONZE DISK, STAMPED 1683 AND FASTENED TO THE
 HV2349'TOP OF AN IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2337 ***********************************************************************
 HV2337  DESIGNATION -  1684 WSSC
 HV2337  PID         -  HV2337
 HV2337  STATE/COUNTY-  MD/MONTGOMERY
 HV2337  COUNTRY     -  US
 HV2337  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2337
 HV2337                         *CURRENT SURVEY CONTROL
 HV2337  ______________________________________________________________________
 HV2337* NAD 83(1986) POSITION- 38 59 07.     (N) 077 01 09.     (W)   SCALED
 HV2337* NAVD 88 ORTHO HEIGHT -    96.73  (+/-2cm)      317.4   (feet) VERTCON3
 HV2337  ______________________________________________________________________
 HV2337  GEOID HEIGHT    -        -31.989 (meters)                     GEOID18
 HV2337  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV2337
 HV2337.The horizontal coordinates were scaled from a map and have
 HV2337.an estimated accuracy of +/- 6 seconds.
 HV2337
 HV2337.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2337.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2337
 HV2337.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2337.GEOID18 height accuracy estimate available here.
 HV2337
 HV2337.The vertical order pertains to the NGVD 29 superseded value.
 HV2337
 HV2337.Click photographs - Photos may exist for this station.
 HV2337
 HV2337;                    North         East    Units  Estimated Accuracy
 HV2337;SPC MD       -   146,370.      398,340.      MT  (+/- 180 meters Scaled)
 HV2337
 HV2337_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ251170(NAD 83)
 HV2337
 HV2337                          SUPERSEDED SURVEY CONTROL
 HV2337
 HV2337  NGVD 29 (11/26/84)   96.942  (m)          318.05   (f) ADJUSTED    2 0
 HV2337
 HV2337.Superseded values are not recommended for survey control.
 HV2337
 HV2337.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2337.See file dsdata.pdf to determine how the superseded data were derived.
 HV2337
 HV2337_MARKER: DD = SURVEY DISK
 HV2337_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2337_STAMPING: 1684
 HV2337_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2337
 HV2337  HISTORY     - Date     Condition        Report By
 HV2337  HISTORY     - UNK      MONUMENTED       WSSC
 HV2337  HISTORY     - 1951     GOOD             CGS
 HV2337
 HV2337                          STATION DESCRIPTION
 HV2337
 HV2337'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2337'IN TAKOMA PARK.
 HV2337'IN THE WEST CORNER OF THE INTERSECTION OF PHILADELPHIA AVENUE
 HV2337'AND TAKOMA AVENUE, 40 FEET SOUTHWEST OF THE CENTERLINE OF
 HV2337'PHILADELPHIA AVENUE, ON THE NORTHWEST SIDE OF TAKOMA AVENUE,
 HV2337'AND IN THE PARKING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1290 ***********************************************************************
 HV1290  DESIGNATION -  1685 WSSC
 HV1290  PID         -  HV1290
 HV1290  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1290  COUNTRY     -  US
 HV1290  USGS QUAD   -  LANHAM (2016)
 HV1290
 HV1290                         *CURRENT SURVEY CONTROL
 HV1290  ______________________________________________________________________
 HV1290* NAD 83(1986) POSITION- 38 59 28.     (N) 076 51 28.     (W)   SCALED
 HV1290* NAVD 88 ORTHO HEIGHT -    61.86  (+/-2cm)      203.0   (feet) VERTCON3
 HV1290  ______________________________________________________________________
 HV1290  GEOID HEIGHT    -        -32.326 (meters)                     GEOID18
 HV1290  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1290
 HV1290.The horizontal coordinates were scaled from a map and have
 HV1290.an estimated accuracy of +/- 6 seconds.
 HV1290
 HV1290.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1290.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1290
 HV1290.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1290.GEOID18 height accuracy estimate available here.
 HV1290
 HV1290.The vertical order pertains to the NGVD 29 superseded value.
 HV1290
 HV1290.Click photographs - Photos may exist for this station.
 HV1290
 HV1290;                    North         East    Units  Estimated Accuracy
 HV1290;SPC MD       -   147,030.      412,320.      MT  (+/- 180 meters Scaled)
 HV1290
 HV1290_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ391174(NAD 83)
 HV1290
 HV1290                          SUPERSEDED SURVEY CONTROL
 HV1290
 HV1290  NGVD 29 (11/26/84)   62.080  (m)          203.67   (f) ADJUSTED    2 0
 HV1290
 HV1290.Superseded values are not recommended for survey control.
 HV1290
 HV1290.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1290.See file dsdata.pdf to determine how the superseded data were derived.
 HV1290
 HV1290_MARKER: DD = SURVEY DISK
 HV1290_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1290_STAMPING: 1685
 HV1290_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1290
 HV1290  HISTORY     - Date     Condition        Report By
 HV1290  HISTORY     - UNK      MONUMENTED       WSSC
 HV1290  HISTORY     - 1944     GOOD             WSSC
 HV1290
 HV1290                          STATION DESCRIPTION
 HV1290
 HV1290'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1290'2.4 MI W FROM GLENN DALE.
 HV1290'ON THE BRANCHVILLE-GLENN DALE ROAD, AT THE ROAD LEADING TO THE
 HV1290'CIPRIANO FARM, ON THE SOUTH SIDE OF THE MAIN ROAD, ON THE WEST
 HV1290'SIDE OF THE FARM ROAD, AND 12 FEET NORTH OF A FENCE LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2742 ***********************************************************************
 JV2742  DESIGNATION -  1686 WSSC
 JV2742  PID         -  JV2742
 JV2742  STATE/COUNTY-  MD/MONTGOMERY
 JV2742  COUNTRY     -  US
 JV2742  USGS QUAD   -  KENSINGTON (2016)
 JV2742
 JV2742                         *CURRENT SURVEY CONTROL
 JV2742  ______________________________________________________________________
 JV2742* NAD 83(1986) POSITION- 39 02 10.     (N) 077 02 11.     (W)   SCALED
 JV2742* NAVD 88 ORTHO HEIGHT -   117.719 (meters)      386.22  (feet) ADJUSTED
 JV2742  ______________________________________________________________________
 JV2742  GEOID HEIGHT    -        -31.930 (meters)                     GEOID18
 JV2742  DYNAMIC HEIGHT  -        117.656 (meters)      386.01  (feet) COMP
 JV2742  MODELED GRAVITY -    980,085.5   (mgal)                       NAVD 88
 JV2742
 JV2742  VERT ORDER      -  SECOND    CLASS 0
 JV2742
 JV2742.The horizontal coordinates were scaled from a map and have
 JV2742.an estimated accuracy of +/- 6 seconds.
 JV2742
 JV2742.The orthometric height was determined by differential leveling and
 JV2742.adjusted by the NATIONAL GEODETIC SURVEY
 JV2742.in June 1991.
 JV2742
 JV2742.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2742.GEOID18 height accuracy estimate available here.
 JV2742
 JV2742.Click photographs - Photos may exist for this station.
 JV2742
 JV2742.The dynamic height is computed by dividing the NAVD 88
 JV2742.geopotential number by the normal gravity value computed on the
 JV2742.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2742.degrees latitude (g = 980.6199 gals.).
 JV2742
 JV2742.The modeled gravity was interpolated from observed gravity values.
 JV2742
 JV2742;                    North         East    Units  Estimated Accuracy
 JV2742;SPC MD       -   152,020.      396,850.      MT  (+/- 180 meters Scaled)
 JV2742
 JV2742_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ237227(NAD 83)
 JV2742
 JV2742                          SUPERSEDED SURVEY CONTROL
 JV2742
 JV2742  NGVD 29 (11/26/84)  117.948  (m)          386.97   (f) ADJUSTED    2 0
 JV2742
 JV2742.Superseded values are not recommended for survey control.
 JV2742
 JV2742.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2742.See file dsdata.pdf to determine how the superseded data were derived.
 JV2742
 JV2742_MARKER: DD = SURVEY DISK
 JV2742_SETTING: 0 = UNSPECIFIED SETTING
 JV2742_SP_SET: IRON PIPE
 JV2742_STAMPING: 1686
 JV2742_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2742
 JV2742  HISTORY     - Date     Condition        Report By
 JV2742  HISTORY     - UNK      MONUMENTED       WSSC
 JV2742  HISTORY     - 1952     GOOD             CGS
 JV2742  HISTORY     - 1956     MARK NOT FOUND   USGS
 JV2742
 JV2742                          STATION DESCRIPTION
 JV2742
 JV2742'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV2742'1 MI E FROM WHEATON.
 JV2742'ABOUT 1.0 MILE EAST ALONG STATE HIGHWAY 193 FROM THE
 JV2742'INTERSECTION OF GEORGIA AVENUE (STATE HIGHWAY 97) AT WHEATON,
 JV2742'MONTGOMERY COUNTY, AT THE JUNCTION OF CHESTNUT RIDGE ROAD, IN
 JV2742'THE SOUTHWEST ANGLE, 39.6 FEET WEST ACROSS THE SIDE ROAD FROM
 JV2742'A SMALL TREE (THE ONE NEAREST THE CORNER), 47.4 FEET WEST ACROSS
 JV2742'THE SIDE ROAD FROM A TWIN 6-INCH OAK TREE, 36.0 FEET EAST OF
 JV2742'AN 8-INCH LOCUST STUMP, AND 6.7 FEET SOUTHEAST OF THE SOUTHEAST
 JV2742'CORNER OF A CONCRETE PILLAR.  A WASHINGTON SUBURBAN SANITARY
 JV2742'DISTRICT BRONZE DISK, STAMPED 1686, AND FASTENED TO THE TOP OF AN
 JV2742'IRON PIPE.
 JV2742
 JV2742                          STATION RECOVERY (1956)
 JV2742
 JV2742'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956
 JV2742'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1430 ***********************************************************************
 HV1430  DESIGNATION -  1690 WSSC
 HV1430  PID         -  HV1430
 HV1430  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1430  COUNTRY     -  US
 HV1430  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1430
 HV1430                         *CURRENT SURVEY CONTROL
 HV1430  ______________________________________________________________________
 HV1430* NAD 83(1986) POSITION- 38 59 10.     (N) 076 59 03.     (W)   SCALED
 HV1430* NAVD 88 ORTHO HEIGHT -    53.56  (+/-2cm)      175.7   (feet) VERTCON3
 HV1430  ______________________________________________________________________
 HV1430  GEOID HEIGHT    -        -32.043 (meters)                     GEOID18
 HV1430  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1430
 HV1430.The horizontal coordinates were scaled from a map and have
 HV1430.an estimated accuracy of +/- 6 seconds.
 HV1430
 HV1430.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1430.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1430
 HV1430.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1430.GEOID18 height accuracy estimate available here.
 HV1430
 HV1430.The vertical order pertains to the NGVD 29 superseded value.
 HV1430
 HV1430.Click photographs - Photos may exist for this station.
 HV1430
 HV1430;                    North         East    Units  Estimated Accuracy
 HV1430;SPC MD       -   146,470.      401,370.      MT  (+/- 180 meters Scaled)
 HV1430
 HV1430_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ281171(NAD 83)
 HV1430
 HV1430                          SUPERSEDED SURVEY CONTROL
 HV1430
 HV1430  NGVD 29 (11/26/84)   53.779  (m)          176.44   (f) ADJUSTED    2 0
 HV1430
 HV1430.Superseded values are not recommended for survey control.
 HV1430
 HV1430.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1430.See file dsdata.pdf to determine how the superseded data were derived.
 HV1430
 HV1430_MARKER: DD = SURVEY DISK
 HV1430_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1430_STAMPING: 1690
 HV1430_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1430
 HV1430  HISTORY     - Date     Condition        Report By
 HV1430  HISTORY     - UNK      MONUMENTED       WSSC
 HV1430  HISTORY     - 1939     GOOD             WSSC
 HV1430  HISTORY     - 20041227 MARK NOT FOUND   GEOCAC
 HV1430
 HV1430                          STATION DESCRIPTION
 HV1430
 HV1430'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1430'0.6 MI SE FROM BROWNS CORNER.
 HV1430'ON UNIVERSITY BOULEVARD, 0.3 MILE NORTHWEST OF RIGGS ROAD, ON
 HV1430'THE SOUTH SIDE OF THE ROAD, BETWEEN TWO OAK TREES, AND 17.5
 HV1430'FEET SOUTH OF THE SOUTH END OF A CULVERT.
 HV1430
 HV1430                          STATION RECOVERY (2004)
 HV1430
 HV1430'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV1430'AREA EXTENSIVELY DEVELOPED SINCE LAST RECOVERY IN 1939. RIGGS ROAD
 HV1430'UNDOUBTEDLY WIDENED SINCE THEN. NO CULVERT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1188 ***********************************************************************
 HV1188  DESIGNATION -  1692 WSSC
 HV1188  PID         -  HV1188
 HV1188  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1188  COUNTRY     -  US
 HV1188  USGS QUAD   -  LANHAM (2016)
 HV1188
 HV1188                         *CURRENT SURVEY CONTROL
 HV1188  ______________________________________________________________________
 HV1188* NAD 83(1986) POSITION- 38 56 10.     (N) 076 51 24.     (W)   SCALED
 HV1188* NAVD 88 ORTHO HEIGHT -    60.38  (+/-2cm)      198.1   (feet) VERTCON3
 HV1188  ______________________________________________________________________
 HV1188  GEOID HEIGHT    -        -32.405 (meters)                     GEOID18
 HV1188  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1188
 HV1188.The horizontal coordinates were scaled from a map and have
 HV1188.an estimated accuracy of +/- 6 seconds.
 HV1188
 HV1188.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1188.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1188
 HV1188.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1188.GEOID18 height accuracy estimate available here.
 HV1188
 HV1188.The vertical order pertains to the NGVD 29 superseded value.
 HV1188
 HV1188.Click photographs - Photos may exist for this station.
 HV1188
 HV1188;                    North         East    Units  Estimated Accuracy
 HV1188;SPC MD       -   140,920.      412,430.      MT  (+/- 180 meters Scaled)
 HV1188
 HV1188_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ390113(NAD 83)
 HV1188
 HV1188                          SUPERSEDED SURVEY CONTROL
 HV1188
 HV1188  NGVD 29 (11/26/84)   60.612  (m)          198.86   (f) ADJUSTED    2 0
 HV1188
 HV1188.Superseded values are not recommended for survey control.
 HV1188
 HV1188.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1188.See file dsdata.pdf to determine how the superseded data were derived.
 HV1188
 HV1188_MARKER: DD = SURVEY DISK
 HV1188_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1188_STAMPING: 1692
 HV1188_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1188
 HV1188  HISTORY     - Date     Condition        Report By
 HV1188  HISTORY     - UNK      MONUMENTED       WSSC
 HV1188  HISTORY     - 1944     GOOD             WSSC
 HV1188
 HV1188                          STATION DESCRIPTION
 HV1188
 HV1188'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1188'AT ARDMORE.
 HV1188'IN FRONT OF ADMORE UNION EVANGELICAL CHURCH, 32.7 FEET SOUTHWEST
 HV1188'OF THE NORTHWEST CORNER, AND 27.5 FEET NORTHWEST OF THE
 HV1188'SOUTHWEST CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1435 ***********************************************************************
 HV1435  DESIGNATION -  1697 WSSC
 HV1435  PID         -  HV1435
 HV1435  STATE/COUNTY-  MD/MONTGOMERY
 HV1435  COUNTRY     -  US
 HV1435  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1435
 HV1435                         *CURRENT SURVEY CONTROL
 HV1435  ______________________________________________________________________
 HV1435* NAD 83(1986) POSITION- 38 59 11.     (N) 076 59 48.     (W)   SCALED
 HV1435* NAVD 88 ORTHO HEIGHT -    58.40  (+/-2cm)      191.6   (feet) VERTCON3
 HV1435  ______________________________________________________________________
 HV1435  GEOID HEIGHT    -        -32.023 (meters)                     GEOID18
 HV1435  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1435
 HV1435.The horizontal coordinates were scaled from a map and have
 HV1435.an estimated accuracy of +/- 6 seconds.
 HV1435
 HV1435.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1435.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1435
 HV1435.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1435.GEOID18 height accuracy estimate available here.
 HV1435
 HV1435.The vertical order pertains to the NGVD 29 superseded value.
 HV1435
 HV1435.Click photographs - Photos may exist for this station.
 HV1435
 HV1435;                    North         East    Units  Estimated Accuracy
 HV1435;SPC MD       -   146,500.      400,290.      MT  (+/- 180 meters Scaled)
 HV1435
 HV1435_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ270171(NAD 83)
 HV1435
 HV1435                          SUPERSEDED SURVEY CONTROL
 HV1435
 HV1435  NGVD 29 (11/26/84)   58.612  (m)          192.30   (f) ADJUSTED    2 0
 HV1435
 HV1435.Superseded values are not recommended for survey control.
 HV1435
 HV1435.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1435.See file dsdata.pdf to determine how the superseded data were derived.
 HV1435
 HV1435_MARKER: DD = SURVEY DISK
 HV1435_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1435_STAMPING: 1697
 HV1435_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1435
 HV1435  HISTORY     - Date     Condition        Report By
 HV1435  HISTORY     - UNK      MONUMENTED       WSSC
 HV1435  HISTORY     - 1952     GOOD             CGS
 HV1435
 HV1435                          STATION DESCRIPTION
 HV1435
 HV1435'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV1435'AT TAKOMA PARK.
 HV1435'AT TAKOMA PARK, MONTGOMERY COUNTY, IN THE NORTH ANGLE OF THE
 HV1435'INTERSECTION OF CARROLL AVENUE AND GARLAND AVENUE, IN THE END
 HV1435'OF THE PARKING ALONG GARLAND AVENUE, 54.2 FEET SOUTH OF THE SOUTH
 HV1435'CORNER OF A HOUSE, 33.9 FEET NORTH OF THE CENTER OF A MANHOLE
 HV1435'IN THE INTERSECTION, 2.4 FEET NORTHEAST OF THE CURB ON GARLAND
 HV1435'AVENUE, 1.75 FEET SOUTHWEST OF THE EDGE OF THE WALK ALONG
 HV1435'CARROLL AVENUE.  A WASHINGTON SURBURBAN SANITARY DISTRICT BRONZE
 HV1435'DISK, STAMPED 1697 AND FASTENED TO THE TOP OF AN IRON PIPE, AND
 HV1435'3.5 FEET NORTHWEST OF THE EDGE OF THE WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1019 ***********************************************************************
 JV1019  DESIGNATION -  1698
 JV1019  PID         -  JV1019
 JV1019  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1019  COUNTRY     -  US
 JV1019  USGS QUAD   -  BELTSVILLE (2016)
 JV1019
 JV1019                         *CURRENT SURVEY CONTROL
 JV1019  ______________________________________________________________________
 JV1019* NAD 83(1986) POSITION- 39 03 02.     (N) 076 55 22.     (W)   SCALED
 JV1019* NAVD 88 ORTHO HEIGHT -    69.917 (meters)      229.39  (feet) ADJUSTED
 JV1019  ______________________________________________________________________
 JV1019  GEOID HEIGHT    -        -32.118 (meters)                     GEOID18
 JV1019  DYNAMIC HEIGHT  -         69.880 (meters)      229.26  (feet) COMP
 JV1019  MODELED GRAVITY -    980,099.4   (mgal)                       NAVD 88
 JV1019
 JV1019  VERT ORDER      -  SECOND    CLASS 0
 JV1019
 JV1019.The horizontal coordinates were scaled from a map and have
 JV1019.an estimated accuracy of +/- 6 seconds.
 JV1019
 JV1019.The orthometric height was determined by differential leveling and
 JV1019.adjusted by the NATIONAL GEODETIC SURVEY
 JV1019.in June 1991.
 JV1019
 JV1019.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1019.GEOID18 height accuracy estimate available here.
 JV1019
 JV1019.Click photographs - Photos may exist for this station.
 JV1019
 JV1019.The dynamic height is computed by dividing the NAVD 88
 JV1019.geopotential number by the normal gravity value computed on the
 JV1019.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1019.degrees latitude (g = 980.6199 gals.).
 JV1019
 JV1019.The modeled gravity was interpolated from observed gravity values.
 JV1019
 JV1019;                    North         East    Units  Estimated Accuracy
 JV1019;SPC MD       -   153,620.      406,680.      MT  (+/- 180 meters Scaled)
 JV1019
 JV1019_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ336241(NAD 83)
 JV1019
 JV1019                          SUPERSEDED SURVEY CONTROL
 JV1019
 JV1019  NGVD 29 (11/26/84)   70.134  (m)          230.10   (f) ADJUSTED    2 0
 JV1019
 JV1019.Superseded values are not recommended for survey control.
 JV1019
 JV1019.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1019.See file dsdata.pdf to determine how the superseded data were derived.
 JV1019
 JV1019_MARKER: DD = SURVEY DISK
 JV1019_SETTING: 0 = UNSPECIFIED SETTING
 JV1019_SP_SET: IRON PIPE
 JV1019_STAMPING: 1698
 JV1019_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1019
 JV1019  HISTORY     - Date     Condition        Report By
 JV1019  HISTORY     - UNK      MONUMENTED       WSSC
 JV1019  HISTORY     - 1951     GOOD             CGS
 JV1019  HISTORY     - 20020130 MARK NOT FOUND   MDSHA
 JV1019
 JV1019                          STATION DESCRIPTION
 JV1019
 JV1019'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1019'1.3 MI NW FROM BELTSVILLE.
 JV1019'ABOUT 1-1/3 MILES NORTHWEST ALONG STATE HIGHWAY 212 FROM ITS
 JV1019'INTERSECTION WITH U.S. HIGHWAY 1 AT BELTSVILLE, PRINCE GEORGES
 JV1019'COUNTY, AT THE JUNCTION OF A ROAD LEADING NORTHWARD IN THE
 JV1019'SOUTH FENCE LINE OF STATE HIGHWAY 212, AND 5.7 FEET WESTWARD
 JV1019'FROM A. AND C.B.P. CO. POLE NO. 319693.  A WASHINGTON, SUBURBAN
 JV1019'SANITARY DISTRICT STANDARD DISK, STAMPED 1698 AND SET IN THE
 JV1019'TOP OF A 2-INCH IRON PIPE PROJECTING IN INCH ABOVE GROUND.
 JV1019
 JV1019                          STATION RECOVERY (2002)
 JV1019
 JV1019'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV1019'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2328 ***********************************************************************
 HV2328  DESIGNATION -  1699
 HV2328  PID         -  HV2328
 HV2328  STATE/COUNTY-  MD/MONTGOMERY
 HV2328  COUNTRY     -  US
 HV2328  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2328
 HV2328                         *CURRENT SURVEY CONTROL
 HV2328  ______________________________________________________________________
 HV2328* NAD 83(1986) POSITION- 38 59 44.3    (N) 077 00 22.0    (W)   HD_HELD2
 HV2328* NAVD 88 ORTHO HEIGHT -    61.678 (meters)      202.36  (feet) ADJUSTED
 HV2328  ______________________________________________________________________
 HV2328  GEOID HEIGHT    -        -32.003 (meters)                     GEOID18
 HV2328  DYNAMIC HEIGHT  -         61.645 (meters)      202.25  (feet) COMP
 HV2328  MODELED GRAVITY -    980,089.3   (mgal)                       NAVD 88
 HV2328
 HV2328  VERT ORDER      -  FIRST     CLASS II
 HV2328
 HV2328.The horizontal coordinates were established by autonomous hand held GPS
 HV2328.observations and have an estimated accuracy of +/- 10 meters.
 HV2328
 HV2328.The orthometric height was determined by differential leveling and
 HV2328.adjusted by the NATIONAL GEODETIC SURVEY
 HV2328.in June 1991.
 HV2328
 HV2328.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2328.GEOID18 height accuracy estimate available here.
 HV2328
 HV2328.Click photographs - Photos may exist for this station.
 HV2328
 HV2328.The dynamic height is computed by dividing the NAVD 88
 HV2328.geopotential number by the normal gravity value computed on the
 HV2328.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2328.degrees latitude (g = 980.6199 gals.).
 HV2328
 HV2328.The modeled gravity was interpolated from observed gravity values.
 HV2328
 HV2328;                    North         East    Units  Estimated Accuracy
 HV2328;SPC MD       -   147,522.      399,471.      MT  (+/- 10 meters HH2 GPS)
 HV2328
 HV2328_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2626918206(NAD 83)
 HV2328
 HV2328                          SUPERSEDED SURVEY CONTROL
 HV2328
 HV2328  NGVD 29 (11/26/84)   61.892  (m)          203.06   (f) ADJUSTED    1 2
 HV2328
 HV2328.Superseded values are not recommended for survey control.
 HV2328
 HV2328.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2328.See file dsdata.pdf to determine how the superseded data were derived.
 HV2328
 HV2328_MARKER: DD = SURVEY DISK
 HV2328_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV2328_SP_SET: ABUTMENT
 HV2328_STAMPING: 1699
 HV2328_MARK LOGO: WSSC
 HV2328_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2328_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2328+SATELLITE: SATELLITE OBSERVATIONS - April 06, 1990
 HV2328
 HV2328  HISTORY     - Date     Condition        Report By
 HV2328  HISTORY     - UNK      MONUMENTED       WSSC
 HV2328  HISTORY     - 1951     GOOD             CGS
 HV2328  HISTORY     - 19900406 GOOD             NGS
 HV2328  HISTORY     - 20110606 GOOD             MDSHA
 HV2328
 HV2328                          STATION DESCRIPTION
 HV2328
 HV2328'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2328'1.3 MI E FROM SILVER SPRING.
 HV2328'ABOUT 1.3 MILES EASTWARD ALONG STATE HIGHWAY 320 FROM ITS JUNCTION
 HV2328'WITH STATE HIGHWAY 97 AT SILVER SPRING, MONTGOMERY COUNTY, AT
 HV2328'THE BRIDGE OVER SLIGO BRANCH, AT THE MOST EASTERLY CORNER OF THE
 HV2328'BRIDGE, AND AT THE ANGLE WHERE THE WING WALL JOINS THE SOUTHEAST
 HV2328'END OF THE NORTHEAST ABUTMENT.  A WASHINGTON SUBURBAN SANITARY
 HV2328'DISTRICT BRONZE DISK, STAMPED 1699 AND SET IN THE TOP OF THE
 HV2328'CONCRETE.
 HV2328
 HV2328                          STATION RECOVERY (1990)
 HV2328
 HV2328'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV2328'1.4 KM (0.87 MI) EASTERLY ALONG SLIGO AVENUE FROM THE JUNCTION OF
 HV2328'GEORGIA AVENUE IN SILVER SPRING, THENCE 0.6 KM (0.37 MI)
 HV2328'NORTHEASTERLY ALONG PINEY BRANCH ROAD (STATE HIGHWAY 320), IN TOP OF
 HV2328'AND 0.2 M (0.66 FT) NORTHWEST OF THE SOUTHEAST END OF THE NORTHWEST
 HV2328'CONCRETE ABUTMENT OF A BRIDGE SPANNING SLIGO CREEK, 8.2 M (26.90 FT)
 HV2328'SOUTHEAST OF AND LEVEL WITH THE ROAD CENTERLINE.
 HV2328
 HV2328                          STATION RECOVERY (2011)
 HV2328
 HV2328'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2011 (JMR)
 HV2328'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0031 ***********************************************************************
 JV0031  DESIGNATION -  17
 JV0031  PID         -  JV0031
 JV0031  STATE/COUNTY-  MD/CECIL
 JV0031  COUNTRY     -  US
 JV0031  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0031
 JV0031                         *CURRENT SURVEY CONTROL
 JV0031  ______________________________________________________________________
 JV0031* NAD 83(1986) POSITION- 39 36 15.     (N) 076 06 54.     (W)   SCALED
 JV0031* NAVD 88 ORTHO HEIGHT -     4.816 (meters)       15.80  (feet) ADJUSTED
 JV0031  ______________________________________________________________________
 JV0031  GEOID HEIGHT    -        -33.022 (meters)                     GEOID18
 JV0031  DYNAMIC HEIGHT  -          4.814 (meters)       15.79  (feet) COMP
 JV0031  MODELED GRAVITY -    980,134.1   (mgal)                       NAVD 88
 JV0031
 JV0031  VERT ORDER      -  FIRST     CLASS II
 JV0031
 JV0031.The horizontal coordinates were scaled from a map and have
 JV0031.an estimated accuracy of +/- 6 seconds.
 JV0031
 JV0031.The orthometric height was determined by differential leveling and
 JV0031.adjusted by the NATIONAL GEODETIC SURVEY
 JV0031.in June 1991.
 JV0031
 JV0031.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0031.GEOID18 height accuracy estimate available here.
 JV0031
 JV0031.Click photographs - Photos may exist for this station.
 JV0031
 JV0031.The dynamic height is computed by dividing the NAVD 88
 JV0031.geopotential number by the normal gravity value computed on the
 JV0031.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0031.degrees latitude (g = 980.6199 gals.).
 JV0031
 JV0031.The modeled gravity was interpolated from observed gravity values.
 JV0031
 JV0031;                    North         East    Units  Estimated Accuracy
 JV0031;SPC MD       -   215,450.      476,010.      MT  (+/- 180 meters Scaled)
 JV0031
 JV0031_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ042844(NAD 83)
 JV0031
 JV0031                          SUPERSEDED SURVEY CONTROL
 JV0031
 JV0031  NGVD 29 (11/26/84)    5.077  (m)           16.66   (f) ADJUSTED    1 2
 JV0031
 JV0031.Superseded values are not recommended for survey control.
 JV0031
 JV0031.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0031.See file dsdata.pdf to determine how the superseded data were derived.
 JV0031
 JV0031_MARKER: DD = SURVEY DISK
 JV0031_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0031_SP_SET: BUILDING
 JV0031_MARK LOGO: USGS
 JV0031_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0031
 JV0031  HISTORY     - Date     Condition        Report By
 JV0031  HISTORY     - 1899     MONUMENTED       USGS
 JV0031  HISTORY     - 1955     GOOD             CGS
 JV0031  HISTORY     - 1979     GOOD             NGS
 JV0031  HISTORY     - 20110920 MARK NOT FOUND   MD-015
 JV0031
 JV0031                          STATION DESCRIPTION
 JV0031
 JV0031'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0031'AT PORT DEPOSIT.
 JV0031'AT PORT DEPOSIT, ABOUT 0.2 MILE SOUTHEAST ALONG THE PENNSYLVANIA
 JV0031'RAILROAD FROM THE STATION, THENCE ABOUT 0.05 MILE NORTHEAST ALONG
 JV0031'A STREET LEADING TO POST OFFICE, A CROSS ON THE END OF SHANK OF
 JV0031'ALUMINUM DISK WHICH IS IN THE VERTICAL NORTHWEST FACE OF STONE
 JV0031'MASONRY BASEMENT OF A 3-STORY BRICK BUILDING HOUSING THE POST
 JV0031'OFFICE, STORE AND COBURN APARTMENTS, 11 1/2 FEET SOUTHWEST OF
 JV0031'SOUTHWEST CURB OF U.S. HIGHWAY 222, 5.4 FEET SOUTHWEST OF NORTH
 JV0031'CORNER OF STONE PORCH OF BUILDING, 7.2 FEET SOUTHEAST OF
 JV0031'SOUTHEAST CURB OF A STREET LEADING SOUTHWEST TO WILEY
 JV0031'MANUFACTURING COMPANY, AND 1.8 FEET ABOVE LEVEL OF SIDE WALK.
 JV0031
 JV0031                          STATION RECOVERY (1979)
 JV0031
 JV0031'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0031'NOTE, MARK WAS FOUND TO BE IN GOOD CONDITION BUT NOT ABLE TO BE
 JV0031'LEVELED TO, DUE TO CONSTRUCTION.
 JV0031
 JV0031                          STATION RECOVERY (2011)
 JV0031
 JV0031'RECOVERY NOTE BY CECIL COUNTY MARYLAND 2011 (JEH)
 JV0031'MARK NOT FOUND. 1955 DESCRIPTION INDICATES MARK IN FACE OF STRUCTURE
 JV0031'
 JV0031'HOUSING COBURN APARTMENTS. BUILDING HOUSING COBURN APARTMENTS WAS
 JV0031'DESTROYED BY FIRE MANY YEARS AGO. MARK BELIEVED TO BE DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0484 ***********************************************************************
 HU0484  DESIGNATION -  17
 HU0484  PID         -  HU0484
 HU0484  STATE/COUNTY-  MD/SOMERSET
 HU0484  COUNTRY     -  US
 HU0484  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0484
 HU0484                         *CURRENT SURVEY CONTROL
 HU0484  ______________________________________________________________________
 HU0484* NAD 83(1986) POSITION- 38 12 12.8    (N) 075 41 35.4    (W)   HD_HELD2
 HU0484* NAVD 88 ORTHO HEIGHT -     5.208 (meters)       17.09  (feet) ADJUSTED
 HU0484  ______________________________________________________________________
 HU0484  GEOID HEIGHT    -        -36.001 (meters)                     GEOID18
 HU0484  DYNAMIC HEIGHT  -          5.205 (meters)       17.08  (feet) COMP
 HU0484  MODELED GRAVITY -    979,987.8   (mgal)                       NAVD 88
 HU0484
 HU0484  VERT ORDER      -  FIRST     CLASS I
 HU0484
 HU0484.The horizontal coordinates were established by autonomous hand held GPS
 HU0484.observations and have an estimated accuracy of +/- 10 meters.
 HU0484
 HU0484.The orthometric height was determined by differential leveling and
 HU0484.adjusted by the NATIONAL GEODETIC SURVEY
 HU0484.in June 1991.
 HU0484
 HU0484.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0484.GEOID18 height accuracy estimate available here.
 HU0484
 HU0484.Click photographs - Photos may exist for this station.
 HU0484
 HU0484.The dynamic height is computed by dividing the NAVD 88
 HU0484.geopotential number by the normal gravity value computed on the
 HU0484.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0484.degrees latitude (g = 980.6199 gals.).
 HU0484
 HU0484.The modeled gravity was interpolated from observed gravity values.
 HU0484
 HU0484;                    North         East    Units  Estimated Accuracy
 HU0484;SPC MD       -    60,417.      514,463.      MT  (+/- 10 meters HH2 GPS)
 HU0484
 HU0484_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3931028627(NAD 83)
 HU0484
 HU0484                          SUPERSEDED SURVEY CONTROL
 HU0484
 HU0484  NGVD 29 (11/26/84)    5.464  (m)           17.93   (f) ADJUSTED    1 1
 HU0484
 HU0484.Superseded values are not recommended for survey control.
 HU0484
 HU0484.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0484.See file dsdata.pdf to determine how the superseded data were derived.
 HU0484
 HU0484_MARKER: DB = BENCH MARK DISK
 HU0484_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0484_SP_SET: BUILDING
 HU0484_STAMPING: 17 BALTO 1900 MARYLAND
 HU0484_MARK LOGO: USGS
 HU0484_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0484_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0484+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2008
 HU0484
 HU0484  HISTORY     - Date     Condition        Report By
 HU0484  HISTORY     - 1900     MONUMENTED       USGS
 HU0484  HISTORY     - 1972     GOOD             NGS
 HU0484  HISTORY     - 20050711 GOOD             USPSQD
 HU0484  HISTORY     - 20080217 GOOD             GEOCAC
 HU0484
 HU0484                          STATION DESCRIPTION
 HU0484
 HU0484'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0484'AT PRINCESS ANNE.
 HU0484'AT PRINCESS ANNE, ABOUT 84 YARDS SOUTH ALONG SOMERSET AVENUE FROM
 HU0484'THE JUNCTION OF STATE HIGHWAY 363, ALONG THE EAST SIDE OF SOMERSET
 HU0484'AVENUE, BETWEEN PRINCE WILLIAMS STREET AND WASHINGTON STREET,
 HU0484'SET VERTICALLY IN THE WEST BRICK FACE OF A BRICK BUILDING OCCUPIED
 HU0484'BY THE JONES AND JONES LAW OFFICE AS OF THIS DATE, 13.6 FEET NORTH
 HU0484'OF THE SOUTHWEST CORNER OF THE BUILDING, 13.6 FEET SOUTH OF THE
 HU0484'NORTHWEST CORNER OF THE BUILDING, 8.4 FEET EAST OF THE EAST CURB
 HU0484'OF SOMERSET AVENUE AND 1 FOOT ABOVE THE LEVEL OF THE SIDEWALK.
 HU0484
 HU0484                          STATION RECOVERY (2005)
 HU0484
 HU0484'RECOVERY NOTE BY US POWER SQUADRON 2005 (KW)
 HU0484'STREET ADDRESS IS 11739 SOMERSET AVENUE IN PRINCESS ANNE, MD.  LAW
 HU0484'OFFICE IS CURRENTLY OCCUPIED BY TONY BRUCE.
 HU0484
 HU0484                          STATION RECOVERY (2008)
 HU0484
 HU0484'RECOVERY NOTE BY GEOCACHING 2008 (TAK)
 HU0484'IN PRINCESS ANNE, MARYLAND, ON THE EAST SIDE OF SOMERSET AVENUE
 HU0484'BETWEEN PRINCE WILLIAM STREET AND WASHINGTON STREET IN THE CENTER OF
 HU0484'THE RED BRICK BUILDING WITH TWO DOORWAYS LABELED 11739 AND 11741. THE
 HU0484'MARK IS SET VERTICALLY ON THE WEST BRICK FACE OF THE BUILDING, 2.5
 HU0484'FEET BELOW THE TOP SURFACE OF THE RED STONE WINDOWSILL, ONE FOOT ABOVE
 HU0484'THE LEVEL OF THE SIDEWALK, AND 13.6 FEET FROM EITHER SIDE OF THE
 HU0484'BUILDING.
 HU0484'
 HU0484'THE MARK IS A USGS BENCH MARK DISK STAMPED MARYLAND 17 BALTO 1900.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4900 ***********************************************************************
 JV4900  DESIGNATION -  17
 JV4900  PID         -  JV4900
 JV4900  STATE/COUNTY-  MD/KENT
 JV4900  COUNTRY     -  US
 JV4900  USGS QUAD   -  HANESVILLE (2016)
 JV4900
 JV4900                         *CURRENT SURVEY CONTROL
 JV4900  ______________________________________________________________________
 JV4900* NAD 83(1991) POSITION- 39 19 54.93032(N) 076 10 13.40182(W)   ADJUSTED
 JV4900* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4900  ______________________________________________________________________
 JV4900  GEOID HEIGHT    -        -33.291 (meters)                     GEOID18
 JV4900  LAPLACE CORR    -         -0.91  (seconds)                    DEFLEC18
 JV4900  HORZ ORDER      -  THIRD
 JV4900
 JV4900.The horizontal coordinates were established by classical geodetic methods
 JV4900.and adjusted by the National Geodetic Survey in January 1992.
 JV4900
 JV4900.The orthometric height was scaled from a topographic map.
 JV4900
 JV4900.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4900.GEOID18 height accuracy estimate available here.
 JV4900
 JV4900.Click photographs - Photos may exist for this station.
 JV4900
 JV4900.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4900
 JV4900. The following values were computed from the NAD 83(1991) position.
 JV4900
 JV4900;                    North         East     Units Scale Factor Converg.
 JV4900;SPC MD       -   185,179.771   471,526.891   MT  0.99998148   +0 31 14.5
 JV4900;SPC MD       -   607,543.97  1,547,001.14   sFT  0.99998148   +0 31 14.5
 JV4900;UTM  18      - 4,354,264.764   399,127.750   MT  0.99972528   -0 44 30.7
 JV4900
 JV4900!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4900!SPC MD       -   1.00000526  x   0.99998148  =   0.99998674
 JV4900!UTM  18      -   1.00000526  x   0.99972528  =   0.99973054
 JV4900
 JV4900:                Primary Azimuth Mark                     Grid Az
 JV4900:SPC MD       -  R 2                                      291 17 15.7
 JV4900:UTM  18      -  R 2                                      292 33 00.9
 JV4900
 JV4900_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9912754264(NAD 83)
 JV4900
 JV4900|---------------------------------------------------------------------|
 JV4900| PID    Reference Object                     Distance      Geod. Az  |
 JV4900|                                                           dddmmss.s |
 JV4900| JV4919 R 2                                 APPROX. 5.3 KM 2914830.2 |
 JV4900|---------------------------------------------------------------------|
 JV4900
 JV4900                          SUPERSEDED SURVEY CONTROL
 JV4900
 JV4900  NAD 83(1986)-  39 19 54.92350(N)    076 10 13.40927(W) AD(       ) 3
 JV4900  NAD 27      -  39 19 54.53700(N)    076 10 14.57900(W) AD(       ) 3
 JV4900
 JV4900.Superseded values are not recommended for survey control.
 JV4900
 JV4900.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4900.See file dsdata.pdf to determine how the superseded data were derived.
 JV4900
 JV4900_MARKER: DD = SURVEY DISK
 JV4900_SETTING: 0 = UNSPECIFIED SETTING
 JV4900_MARK LOGO: USACE
 JV4900
 JV4900  HISTORY     - Date     Condition        Report By
 JV4900  HISTORY     - UNK      MONUMENTED
 JV4900  HISTORY     - 1938     GOOD             CGS
 JV4900  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV4900
 JV4900                          STATION DESCRIPTION
 JV4900
 JV4900'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JV4900'STATION RECOVERED IN GOOD CONDITION.
 JV4900
 JV4900                          STATION RECOVERY (1961)
 JV4900
 JV4900'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV4900'NO PREVIOUS DESCRIPTION OF THIS STATION.  IT WAS RECOVERED IN
 JV4900'1938 HOWEVER, NO DESCRIPTION WAS WRITTEN.  RECOMMEND THIS STATION
 JV4900'BE CONSIDERED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0551 ***********************************************************************
 JV0551  DESIGNATION -  17 15
 JV0551  PID         -  JV0551
 JV0551  STATE/COUNTY-  MD/KENT
 JV0551  COUNTRY     -  US
 JV0551  USGS QUAD   -  BETTERTON (2017)
 JV0551
 JV0551                         *CURRENT SURVEY CONTROL
 JV0551  ______________________________________________________________________
 JV0551* NAD 83(1986) POSITION- 39 22 22.     (N) 076 03 55.     (W)   SCALED
 JV0551* NAVD 88 ORTHO HEIGHT -     3.196 (meters)       10.49  (feet) ADJUSTED
 JV0551  ______________________________________________________________________
 JV0551  GEOID HEIGHT    -        -33.344 (meters)                     GEOID18
 JV0551  DYNAMIC HEIGHT  -          3.194 (meters)       10.48  (feet) COMP
 JV0551  MODELED GRAVITY -    980,117.5   (mgal)                       NAVD 88
 JV0551
 JV0551  VERT ORDER      -  SECOND    CLASS 0
 JV0551
 JV0551.The horizontal coordinates were scaled from a map and have
 JV0551.an estimated accuracy of +/- 6 seconds.
 JV0551
 JV0551.The orthometric height was determined by differential leveling and
 JV0551.adjusted by the NATIONAL GEODETIC SURVEY
 JV0551.in June 1991.
 JV0551
 JV0551.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0551.GEOID18 height accuracy estimate available here.
 JV0551
 JV0551.Click photographs - Photos may exist for this station.
 JV0551
 JV0551.The dynamic height is computed by dividing the NAVD 88
 JV0551.geopotential number by the normal gravity value computed on the
 JV0551.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0551.degrees latitude (g = 980.6199 gals.).
 JV0551
 JV0551.The modeled gravity was interpolated from observed gravity values.
 JV0551
 JV0551;                    North         East    Units  Estimated Accuracy
 JV0551;SPC MD       -   189,800.      480,540.      MT  (+/- 180 meters Scaled)
 JV0551
 JV0551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ082586(NAD 83)
 JV0551
 JV0551                          SUPERSEDED SURVEY CONTROL
 JV0551
 JV0551  NGVD 29 (11/26/84)    3.439  (m)           11.28   (f) ADJUSTED    2 0
 JV0551
 JV0551.Superseded values are not recommended for survey control.
 JV0551
 JV0551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0551.See file dsdata.pdf to determine how the superseded data were derived.
 JV0551
 JV0551_MARKER: Q = CHISELED SQUARE
 JV0551_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0551_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0551+STABILITY: SURFACE MOTION
 JV0551
 JV0551  HISTORY     - Date     Condition        Report By
 JV0551  HISTORY     - UNK      MONUMENTED       CGS
 JV0551  HISTORY     - 1943     GOOD             CGS
 JV0551  HISTORY     - 1964     GOOD             CGS
 JV0551  HISTORY     - 20011027 MARK NOT FOUND   USPSQD
 JV0551  HISTORY     - 20040102 MARK NOT FOUND   USPSQD
 JV0551
 JV0551                          STATION DESCRIPTION
 JV0551
 JV0551'DESCRIBED BY COAST AND GEODETIC SURVEY 1943
 JV0551'AT BETTERTON.
 JV0551'AT BETTERTON, KENT COUNTY, ON THE LONGER AND THE WEST ONE OF
 JV0551'THE TWO PIERS, 200 YARDS OUT FROM THE SHORE, ON THE SOUTHEAST
 JV0551'CORNER OF THE ERICSSON LINE PIER (NOW ABANDONED), ON THE TOP
 JV0551'OF A CONCRETE POST ABOUT 18 INCHES IN DIAMETER, AND 3 FEET ABOVE
 JV0551'THE FLOOR OF THE WHARF.  A CHISELED SQUARE.
 JV0551
 JV0551                          STATION RECOVERY (1964)
 JV0551
 JV0551'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JV0551'RECOVERED IN GOOD CONDITION.
 JV0551
 JV0551                          STATION RECOVERY (2001)
 JV0551
 JV0551'RECOVERY NOTE BY US POWER SQUADRON 2001 (TC)
 JV0551'MARK NOT FOUND.
 JV0551
 JV0551                          STATION RECOVERY (2004)
 JV0551
 JV0551'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 JV0551'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7022 ***********************************************************************
 JV7022  DESIGNATION -  17 42 015
 JV7022  PID         -  JV7022
 JV7022  STATE/COUNTY-  MD/HOWARD
 JV7022  COUNTRY     -  US
 JV7022  USGS QUAD   -  LAUREL (2016)
 JV7022
 JV7022                         *CURRENT SURVEY CONTROL
 JV7022  ______________________________________________________________________
 JV7022* NAD 83(2011) POSITION- 39 06 57.73104(N) 076 49 54.98263(W)   ADJUSTED
 JV7022* NAD 83(2011) ELLIP HT-    40.722 (meters)        (06/27/12)   ADJUSTED
 JV7022* NAD 83(2011) EPOCH   -  2010.00
 JV7022* NAVD 88 ORTHO HEIGHT -    73.0   (meters)      240.    (feet) GPS OBS
 JV7022  ______________________________________________________________________
 JV7022  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7022  GEOID HEIGHT    -        -32.265 (meters)                     GEOID99
 JV7022  GEOID HEIGHT    -        -32.280 (meters)                     GEOID18
 JV7022  NAD 83(2011) X  -  1,128,844.304 (meters)                     COMP
 JV7022  NAD 83(2011) Y  - -4,824,949.016 (meters)                     COMP
 JV7022  NAD 83(2011) Z  -  4,002,345.665 (meters)                     COMP
 JV7022  LAPLACE CORR    -         -5.08  (seconds)                    DEFLEC18
 JV7022
 JV7022  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7022  Standards:
 JV7022         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7022            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7022  -------------------------------------------------------------------
 JV7022  NETWORK    1.12   1.35           0.48   0.43   0.69     -0.10672691
 JV7022  -------------------------------------------------------------------
 JV7022  Click here for local accuracies and other accuracy information.
 JV7022
 JV7022.The horizontal coordinates were established by GPS observations
 JV7022.and adjusted by the National Geodetic Survey in June 2012.
 JV7022
 JV7022.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7022.been affixed to the stable North American tectonic plate. See 
 JV7022.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7022
 JV7022.The horizontal coordinates are valid at the epoch date displayed above
 JV7022.which is a decimal equivalence of Year/Month/Day.
 JV7022
 JV7022.The orthometric height was determined by GPS observations and a
 JV7022.high-resolution geoid model.
 JV7022
 JV7022.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7022.GEOID18 height accuracy estimate available here.
 JV7022
 JV7022.Click photographs - Photos may exist for this station.
 JV7022
 JV7022.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7022
 JV7022.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7022
 JV7022.The ellipsoidal height was determined by GPS observations
 JV7022.and is referenced to NAD 83.
 JV7022
 JV7022. The following values were computed from the NAD 83(2011) position.
 JV7022
 JV7022;                    North         East     Units Scale Factor Converg.
 JV7022;SPC MD       -   160,900.973   414,534.048   MT  0.99995861   +0 06 19.7
 JV7022;SPC MD       -   527,889.28  1,360,017.12   sFT  0.99995861   +0 06 19.7
 JV7022;UTM  18      - 4,331,251.071   341,622.995   MT  0.99990886   -1 09 21.6
 JV7022
 JV7022!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7022!SPC MD       -   0.99999361  x   0.99995861  =   0.99995222
 JV7022!UTM  18      -   0.99999361  x   0.99990886  =   0.99990247
 JV7022
 JV7022_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4162231251(NAD 83)
 JV7022
 JV7022                          SUPERSEDED SURVEY CONTROL
 JV7022
 JV7022  NAD 83(2007)-  39 06 57.73146(N)    076 49 54.98378(W) AD(2002.00) 0
 JV7022  ELLIP H (02/10/07)   40.745  (m)                       GP(2002.00)    
 JV7022  ELLIP H (08/30/02)   40.728  (m)                       GP(       ) 4 2
 JV7022  NAD 83(1991)-  39 06 57.73183(N)    076 49 54.98336(W) AD(       ) 1
 JV7022  ELLIP H (02/23/93)   40.678  (m)                       GP(       ) 4 2
 JV7022  NGVD 29 (02/23/93)   73.2    (m)  GEOID90  model used  GPS OBS        
 JV7022
 JV7022.Superseded values are not recommended for survey control.
 JV7022
 JV7022.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7022.See file dsdata.pdf to determine how the superseded data were derived.
 JV7022
 JV7022_MARKER: DD = SURVEY DISK
 JV7022_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7022_STAMPING: 1742015
 JV7022_MARK LOGO: MD-027
 JV7022_PROJECTION: FLUSH
 JV7022_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7022_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7022+STABILITY: SURFACE MOTION
 JV7022_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7022+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7022
 JV7022  HISTORY     - Date     Condition        Report By
 JV7022  HISTORY     - 1981     MONUMENTED       MD-027
 JV7022  HISTORY     - 19901125 GOOD             MD-027
 JV7022  HISTORY     - 19970428 GOOD             DMW
 JV7022  HISTORY     - 20000915 GOOD             MD-027
 JV7022  HISTORY     - 20030828 MARK NOT FOUND   INDIV
 JV7022
 JV7022                          STATION DESCRIPTION
 JV7022
 JV7022'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7022'THE STATION IS LOCATED ABOUT 7.7 MI (12.4 KM) WEST OF ODENTON, 6.7 MI
 JV7022'(10.8 KM) NORTH OF BELTSVILLE AND IN THE CITY OF LAUREL.
 JV7022'TO REACH THE STATION FROM THE INTERSECTION OF US ROUTE 1 AND STATE
 JV7022'ROUTE 32 GO 1.7 MI (2.7 KM) SOUTH ON US ROUTE 1 TO THE STATION ON THE
 JV7022'RIGHT SIDE OF THE ROAD JUST AFTER PASSING INTERSECTION WITH WHISKEY
 JV7022'BOTTOM ROAD.
 JV7022'THE STATION IS ABOUT 100. FT (30.5 M) SOUTH OF THE CENTER LINE OF
 JV7022'WHISKEY BOTTOM ROAD ON THE WEST SIDE OF US ROUTE 1, 43.3 FT (13.2 M)
 JV7022'NORTH OF THE LIGHT POLE AT THE ENTRANCE OF TURF MOTEL. 56.7 FT
 JV7022'(17.3 M) NORTH WEST OF A FIRE HYDRANT, 25. FT (7.6 M) EAST OF THE
 JV7022'EDGE OF THE PARKING LOT OF SAID MOTEL.
 JV7022'THE STATION MARK IS A STANDARD HOWARD COUNTY CONTROL DISC,SET ON A
 JV7022'ROUND CONCRETE MONUMENT 0.75 FT (0.23 M) IN DIAMETER , THE DISC LIES
 JV7022'0.3 FT (0.1 M) BELOW THE SURROUNDING GROUND.  THE DISC IS STAMPED
 JV7022'HOWARD COUNTY CONTROL 1742015 OCT 1981.
 JV7022'OWNERSHIP--INTERSTATE ROAD RIGHT OF WAY
 JV7022'COMMENT--NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV7022'INCLUDED IN THIS GPS SURVEY PROJECT.
 JV7022
 JV7022                          STATION RECOVERY (1997)
 JV7022
 JV7022'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV7022'RECOVERED AS DESCRIBED.
 JV7022
 JV7022                          STATION RECOVERY (2000)
 JV7022
 JV7022'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7022'HOWARD COUNTY RECOVERY 2000 FOUND AS DESCRIBED IN GOOD
 JV7022'CONDITION.
 JV7022'
 JV7022
 JV7022                          STATION RECOVERY (2003)
 JV7022
 JV7022'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003
 JV7022'MARK WAS ON US ROUTE 1.  ROAD WIDENING WORK HAS COMPLETELY DESTROYED
 JV7022'MARK AND VICINITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1422 ***********************************************************************
 HV1422  DESIGNATION -  1703 WSSC
 HV1422  PID         -  HV1422
 HV1422  STATE/COUNTY-  MD/MONTGOMERY
 HV1422  COUNTRY     -  US
 HV1422  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1422
 HV1422                         *CURRENT SURVEY CONTROL
 HV1422  ______________________________________________________________________
 HV1422* NAD 83(1986) POSITION- 38 58 30.     (N) 076 59 42.     (W)   SCALED
 HV1422* NAVD 88 ORTHO HEIGHT -    59.51  (+/-2cm)      195.2   (feet) VERTCON3
 HV1422  ______________________________________________________________________
 HV1422  GEOID HEIGHT    -        -32.032 (meters)                     GEOID18
 HV1422  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1422
 HV1422.The horizontal coordinates were scaled from a map and have
 HV1422.an estimated accuracy of +/- 6 seconds.
 HV1422
 HV1422.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1422.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1422
 HV1422.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1422.GEOID18 height accuracy estimate available here.
 HV1422
 HV1422.The vertical order pertains to the NGVD 29 superseded value.
 HV1422
 HV1422.Click photographs - Photos may exist for this station.
 HV1422
 HV1422;                    North         East    Units  Estimated Accuracy
 HV1422;SPC MD       -   145,230.      400,430.      MT  (+/- 180 meters Scaled)
 HV1422
 HV1422_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ271158(NAD 83)
 HV1422
 HV1422                          SUPERSEDED SURVEY CONTROL
 HV1422
 HV1422  NGVD 29 (11/26/84)   59.730  (m)          195.96   (f) ADJUSTED    2 0
 HV1422
 HV1422.Superseded values are not recommended for survey control.
 HV1422
 HV1422.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1422.See file dsdata.pdf to determine how the superseded data were derived.
 HV1422
 HV1422_MARKER: DD = SURVEY DISK
 HV1422_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1422_STAMPING: 1703
 HV1422_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1422
 HV1422  HISTORY     - Date     Condition        Report By
 HV1422  HISTORY     - UNK      MONUMENTED       WSSC
 HV1422  HISTORY     - 1939     GOOD             WSSC
 HV1422  HISTORY     - 1952     MARK NOT FOUND   CGS
 HV1422
 HV1422                          STATION DESCRIPTION
 HV1422
 HV1422'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1422'AT TAKOMA PARK.
 HV1422'AT THE EAST EDGE OF TAKOMA PARK, ON EAST-WEST HIGHWAY, AT THE
 HV1422'INTERSECTION OF NEW HAMPSHIRE AVENUE, AT THE SOUTHEAST CORNER OF
 HV1422'A HOUSE, AND IN THE LAWN.
 HV1422
 HV1422                          STATION RECOVERY (1952)
 HV1422
 HV1422'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 HV1422'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1291 ***********************************************************************
 HV1291  DESIGNATION -  1706 WSSC
 HV1291  PID         -  HV1291
 HV1291  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1291  COUNTRY     -  US
 HV1291  USGS QUAD   -  LANHAM (2016)
 HV1291
 HV1291                         *CURRENT SURVEY CONTROL
 HV1291  ______________________________________________________________________
 HV1291* NAD 83(1986) POSITION- 38 59 28.     (N) 076 51 20.     (W)   SCALED
 HV1291* NAVD 88 ORTHO HEIGHT -    60.79  (+/-2cm)      199.4   (feet) VERTCON3
 HV1291  ______________________________________________________________________
 HV1291  GEOID HEIGHT    -        -32.332 (meters)                     GEOID18
 HV1291  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1291
 HV1291.The horizontal coordinates were scaled from a map and have
 HV1291.an estimated accuracy of +/- 6 seconds.
 HV1291
 HV1291.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1291.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1291
 HV1291.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1291.GEOID18 height accuracy estimate available here.
 HV1291
 HV1291.The vertical order pertains to the NGVD 29 superseded value.
 HV1291
 HV1291.Click photographs - Photos may exist for this station.
 HV1291
 HV1291;                    North         East    Units  Estimated Accuracy
 HV1291;SPC MD       -   147,030.      412,510.      MT  (+/- 180 meters Scaled)
 HV1291
 HV1291_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ392174(NAD 83)
 HV1291
 HV1291                          SUPERSEDED SURVEY CONTROL
 HV1291
 HV1291  NGVD 29 (11/26/84)   61.012  (m)          200.17   (f) ADJUSTED    2 0
 HV1291
 HV1291.Superseded values are not recommended for survey control.
 HV1291
 HV1291.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1291.See file dsdata.pdf to determine how the superseded data were derived.
 HV1291
 HV1291_MARKER: DD = SURVEY DISK
 HV1291_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1291_STAMPING: 1706
 HV1291_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1291
 HV1291  HISTORY     - Date     Condition        Report By
 HV1291  HISTORY     - UNK      MONUMENTED       WSSC
 HV1291  HISTORY     - 1944     GOOD             WSSC
 HV1291
 HV1291                          STATION DESCRIPTION
 HV1291
 HV1291'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1291'2.2 MI W FROM GLENN DALE.
 HV1291'ON THE BRANCHVILLE-GLENN DLAE ROAD, OPPOSITE A COUNTY ROAD
 HV1291'LEADING SOUTH AND A CIPRIANO SHORT CUT TO LANHAM SIGN, ON THE
 HV1291'NORTH SIDE OF THE MAIN ROAD, ON THE WEST SIDE OF AN OVERGROWN
 HV1291'FENCE LINE, AND NEAR TWO CHERRY TREES AND AN OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4253 ***********************************************************************
 JV4253  DESIGNATION -  17060 WSSC 1969
 JV4253  PID         -  JV4253
 JV4253  STATE/COUNTY-  MD/MONTGOMERY
 JV4253  COUNTRY     -  US
 JV4253  USGS QUAD   -  SANDY SPRING (2016)
 JV4253
 JV4253                         *CURRENT SURVEY CONTROL
 JV4253  ______________________________________________________________________
 JV4253* NAD 83(1991) POSITION- 39 08 56.34154(N) 077 01 05.42104(W)   ADJUSTED
 JV4253* NAVD 88 ORTHO HEIGHT -   143.9   (meters)      472.    (feet) VERTCON3
 JV4253  ______________________________________________________________________
 JV4253  GEOID HEIGHT    -        -31.908 (meters)                     GEOID18
 JV4253  LAPLACE CORR    -         -3.56  (seconds)                    DEFLEC18
 JV4253  HORZ ORDER      -  SECOND
 JV4253
 JV4253.The horizontal coordinates were established by classical geodetic methods
 JV4253.and adjusted by the National Geodetic Survey in January 1992.
 JV4253
 JV4253.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4253.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4253
 JV4253.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4253.GEOID18 height accuracy estimate available here.
 JV4253
 JV4253.Click photographs - Photos may exist for this station.
 JV4253
 JV4253.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4253
 JV4253. The following values were computed from the NAD 83(1991) position.
 JV4253
 JV4253;                    North         East     Units Scale Factor Converg.
 JV4253;SPC MD       -   164,545.354   398,429.148   MT  0.99996118   -0 00 41.1
 JV4253;SPC MD       -   539,845.88  1,307,179.63   sFT  0.99996118   -0 00 41.1
 JV4253;UTM  18      - 4,335,249.265   325,602.585   MT  0.99997451   -1 16 28.1
 JV4253
 JV4253!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4253!SPC MD       -   0.99998243  x   0.99996118  =   0.99994361
 JV4253!UTM  18      -   0.99998243  x   0.99997451  =   0.99995694
 JV4253
 JV4253_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2560235249(NAD 83)
 JV4253
 JV4253                          SUPERSEDED SURVEY CONTROL
 JV4253
 JV4253  NAD 83(1986)-  39 08 56.34111(N)    077 01 05.43086(W) AD(       ) 2
 JV4253  NAD 27      -  39 08 55.95412(N)    077 01 06.51221(W) AD(       ) 2
 JV4253  NGVD 29 (07/19/86)  144.1    (m)          473.     (f) VERT ANG       
 JV4253
 JV4253.Superseded values are not recommended for survey control.
 JV4253
 JV4253.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4253.See file dsdata.pdf to determine how the superseded data were derived.
 JV4253
 JV4253_MARKER: I = METAL ROD
 JV4253_SETTING: 0 = UNSPECIFIED SETTING
 JV4253_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4253
 JV4253  HISTORY     - Date     Condition        Report By
 JV4253  HISTORY     - 1969     MONUMENTED       WSSC
 JV4253  HISTORY     - 19950323 MARK NOT FOUND   USPSQD
 JV4253  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV4253
 JV4253                          STATION DESCRIPTION
 JV4253
 JV4253'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4253'THE STATION IS ABOUT 1/2 MILE WEST OF ASHTON AND 1-1/2 MILES
 JV4253'NORTH OF NORWOOD.
 JV4253'
 JV4253'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 108 AND
 JV4253'NEW HAMPSHIRE AVE. GO SOUTHWEST ON ROUTE 108 FOR .5 MILE TO
 JV4253'SHERWOOD HIGH SCHOOL AND THE STATION IS ON THE LEFT.
 JV4253'
 JV4253'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4253'AND IS FLUSH WITH THE GROUND.  IT IS 27.37 FEET SOUTHEAST OF A
 JV4253'POWER LINE POLE AND IS 26.0 FEET SOUTH OF THE SOUTH EDGE OF THE
 JV4253'ROAD.
 JV4253
 JV4253                          STATION RECOVERY (1995)
 JV4253
 JV4253'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4253'MARK NOT FOUND.
 JV4253
 JV4253                          STATION RECOVERY (1995)
 JV4253
 JV4253'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4253'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4514 ***********************************************************************
 JV4514  DESIGNATION -  17061 WSSC 1969
 JV4514  PID         -  JV4514
 JV4514  STATE/COUNTY-  MD/MONTGOMERY
 JV4514  COUNTRY     -  US
 JV4514  USGS QUAD   -  SENECA (2016)
 JV4514
 JV4514                         *CURRENT SURVEY CONTROL
 JV4514  ______________________________________________________________________
 JV4514* NAD 83(1993) POSITION- 39 06 42.54538(N) 077 18 03.82885(W)   ADJUSTED
 JV4514* NAVD 88 ORTHO HEIGHT -   129.6   (meters)      425.    (feet) VERTCON3
 JV4514  ______________________________________________________________________
 JV4514  GEOID HEIGHT    -        -31.823 (meters)                     GEOID18
 JV4514  LAPLACE CORR    -          3.38  (seconds)                    DEFLEC18
 JV4514  HORZ ORDER      -  SECOND
 JV4514
 JV4514.The horizontal coordinates were established by classical geodetic methods
 JV4514.and adjusted by the National Geodetic Survey in November 1994.
 JV4514
 JV4514.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4514.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4514
 JV4514.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4514.GEOID18 height accuracy estimate available here.
 JV4514
 JV4514.Click photographs - Photos may exist for this station.
 JV4514
 JV4514.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4514
 JV4514. The following values were computed from the NAD 83(1993) position.
 JV4514
 JV4514;                    North         East     Units Scale Factor Converg.
 JV4514;SPC MD       -   160,462.250   373,962.177   MT  0.99995831   -0 11 20.2
 JV4514;SPC MD       -   526,449.90  1,226,907.58   sFT  0.99995831   -0 11 20.2
 JV4514;UTM  18      - 4,331,706.246   301,049.834   MT  1.00008739   -1 27 07.4
 JV4514
 JV4514!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4514!SPC MD       -   0.99998466  x   0.99995831  =   0.99994297
 JV4514!UTM  18      -   0.99998466  x   1.00008739  =   1.00007205
 JV4514
 JV4514_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0104931706(NAD 83)
 JV4514
 JV4514                          SUPERSEDED SURVEY CONTROL
 JV4514
 JV4514  NAD 83(1991)-  39 06 42.54461(N)    077 18 03.82902(W) AD(       ) 2
 JV4514  NAD 83(1986)-  39 06 42.54506(N)    077 18 03.83938(W) AD(       ) 2
 JV4514  NAD 27      -  39 06 42.15752(N)    077 18 04.89028(W) AD(       ) 2
 JV4514  NGVD 29 (07/19/86)  129.8    (m)          426.     (f) VERT ANG       
 JV4514
 JV4514.Superseded values are not recommended for survey control.
 JV4514
 JV4514.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4514.See file dsdata.pdf to determine how the superseded data were derived.
 JV4514
 JV4514_MARKER: I = METAL ROD
 JV4514_SETTING: 0 = UNSPECIFIED SETTING
 JV4514_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4514
 JV4514  HISTORY     - Date     Condition        Report By
 JV4514  HISTORY     - 1969     MONUMENTED       WSSC
 JV4514
 JV4514                          STATION DESCRIPTION
 JV4514
 JV4514'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4514'THE STATION IS ABOUT 1 MILE NORTHWEST OF DARNESTOWN AND 3 MILES
 JV4514'SOUTHEAST OF DAWSONVILLE.
 JV4514'
 JV4514'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 118 AND
 JV4514'ROUTE 28, GO NORTH ON ROUTE 118 FOR .15 MILES TO THE STATION
 JV4514'ON THE RIGHT.
 JV4514'
 JV4514'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4514'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 85.11 FEET NORTHWEST
 JV4514'OF POWER LINE POLE NO. 641339, 26.46 FEET NORTHEAST OF A POWER
 JV4514'LINE POLE, 52.31 FEET NORTHEAST OF POWER LINE POLE NO. 3, 9.5
 JV4514'FEET NORTH OF A CORNER OF A FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4508 ***********************************************************************
 JV4508  DESIGNATION -  17063 WSSC 1969
 JV4508  PID         -  JV4508
 JV4508  STATE/COUNTY-  MD/MONTGOMERY
 JV4508  COUNTRY     -  US
 JV4508  USGS QUAD   -  SENECA (2016)
 JV4508
 JV4508                         *CURRENT SURVEY CONTROL
 JV4508  ______________________________________________________________________
 JV4508* NAD 83(1993) POSITION- 39 06 45.79809(N) 077 16 02.03122(W)   ADJUSTED
 JV4508* NAVD 88 ORTHO HEIGHT -   130.7   (meters)      429.    (feet) VERTCON3
 JV4508  ______________________________________________________________________
 JV4508  GEOID HEIGHT    -        -31.772 (meters)                     GEOID18
 JV4508  LAPLACE CORR    -          2.46  (seconds)                    DEFLEC18
 JV4508  HORZ ORDER      -  SECOND
 JV4508
 JV4508.The horizontal coordinates were established by classical geodetic methods
 JV4508.and adjusted by the National Geodetic Survey in November 1994.
 JV4508
 JV4508.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4508.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4508
 JV4508.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4508.GEOID18 height accuracy estimate available here.
 JV4508
 JV4508.Click photographs - Photos may exist for this station.
 JV4508
 JV4508.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4508
 JV4508. The following values were computed from the NAD 83(1993) position.
 JV4508
 JV4508;                    North         East     Units Scale Factor Converg.
 JV4508;SPC MD       -   160,553.446   376,888.519   MT  0.99995837   -0 10 03.8
 JV4508;SPC MD       -   526,749.10  1,236,508.42   sFT  0.99995837   -0 10 03.8
 JV4508;UTM  18      - 4,331,732.918   303,977.832   MT  1.00007315   -1 25 50.6
 JV4508
 JV4508!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4508!SPC MD       -   0.99998448  x   0.99995837  =   0.99994285
 JV4508!UTM  18      -   0.99998448  x   1.00007315  =   1.00005763
 JV4508
 JV4508:                Primary Azimuth Mark                     Grid Az
 JV4508:SPC MD       -  ATHEY                                    241 13 31.6
 JV4508:UTM  18      -  ATHEY                                    242 29 18.4
 JV4508
 JV4508_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0397731732(NAD 83)
 JV4508
 JV4508|---------------------------------------------------------------------|
 JV4508| PID    Reference Object                     Distance      Geod. Az  |
 JV4508|                                                           dddmmss.s |
 JV4508| JV4507 17064 WSSC 1969                     288.069 METERS 16049     |
 JV4508| JV2900 ATHEY                               APPROX. 2.2 KM 2410327.8 |
 JV4508|---------------------------------------------------------------------|
 JV4508
 JV4508                          SUPERSEDED SURVEY CONTROL
 JV4508
 JV4508  NAD 83(1991)-  39 06 45.79717(N)    077 16 02.03139(W) AD(       ) 2
 JV4508  NAD 83(1986)-  39 06 45.79765(N)    077 16 02.04175(W) AD(       ) 2
 JV4508  NAD 27      -  39 06 45.40982(N)    077 16 03.09648(W) AD(       ) 2
 JV4508  NGVD 29 (07/19/86)  130.9    (m)          429.     (f) VERT ANG       
 JV4508
 JV4508.Superseded values are not recommended for survey control.
 JV4508
 JV4508.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4508.See file dsdata.pdf to determine how the superseded data were derived.
 JV4508
 JV4508_MARKER: I = METAL ROD
 JV4508_SETTING: 0 = UNSPECIFIED SETTING
 JV4508_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4508
 JV4508  HISTORY     - Date     Condition        Report By
 JV4508  HISTORY     - 1969     MONUMENTED       WSSC
 JV4508
 JV4508                          STATION DESCRIPTION
 JV4508
 JV4508'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4508'THE STATION IS ABOUT 1-1/2 MILES SOUTHEAST OF DARNSTOWN AND 3
 JV4508'MILES NORTH OF TRAVILAH.
 JV4508'
 JV4508'TO REACH THE STATION FROM ROUTE 28 AND JONES LANE, GO SOUTH
 JV4508'ON JONES LANE FOR 500 FEET TO THE STATION ON THE RIGHT.
 JV4508'
 JV4508'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4508'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 34.18 FEET NORTH OF
 JV4508'POWER LINE POLE 613543, 80.23 FEET NORTHEAST OF THE NORTHEAST
 JV4508'CORNER OF HOUSE 15712, 58.63 FEET SOUTHEAST OF THE SOUTHEAST
 JV4508'CORNER OF HOUSE 15708 AND IS 19.80 FEET WEST OF THE WEST EDGE
 JV4508'OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4507 ***********************************************************************
 JV4507  DESIGNATION -  17064 WSSC 1969
 JV4507  PID         -  JV4507
 JV4507  STATE/COUNTY-  MD/MONTGOMERY
 JV4507  COUNTRY     -  US
 JV4507  USGS QUAD   -  SENECA (2016)
 JV4507
 JV4507                         *CURRENT SURVEY CONTROL
 JV4507  ______________________________________________________________________
 JV4507* NAD 83(1993) POSITION- 39 06 36.97556(N) 077 15 58.09114(W)   ADJUSTED
 JV4507* NAVD 88 ORTHO HEIGHT -   132.6   (meters)      435.    (feet) VERTCON3
 JV4507  ______________________________________________________________________
 JV4507  GEOID HEIGHT    -        -31.769 (meters)                     GEOID18
 JV4507  LAPLACE CORR    -          2.35  (seconds)                    DEFLEC18
 JV4507  HORZ ORDER      -  SECOND
 JV4507
 JV4507.The horizontal coordinates were established by classical geodetic methods
 JV4507.and adjusted by the National Geodetic Survey in November 1994.
 JV4507
 JV4507.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4507.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4507
 JV4507.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4507.GEOID18 height accuracy estimate available here.
 JV4507
 JV4507.Click photographs - Photos may exist for this station.
 JV4507
 JV4507.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4507
 JV4507. The following values were computed from the NAD 83(1993) position.
 JV4507
 JV4507;                    North         East     Units Scale Factor Converg.
 JV4507;SPC MD       -   160,281.111   376,982.381   MT  0.99995820   -0 10 01.3
 JV4507;SPC MD       -   525,855.61  1,236,816.36   sFT  0.99995820   -0 10 01.3
 JV4507;UTM  18      - 4,331,458.549   304,065.678   MT  1.00007273   -1 25 47.9
 JV4507
 JV4507!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4507!SPC MD       -   0.99998418  x   0.99995820  =   0.99994238
 JV4507!UTM  18      -   0.99998418  x   1.00007273  =   1.00005691
 JV4507
 JV4507_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0406531458(NAD 83)
 JV4507
 JV4507                          SUPERSEDED SURVEY CONTROL
 JV4507
 JV4507  NAD 83(1991)-  39 06 36.97464(N)    077 15 58.09132(W) AD(       ) 2
 JV4507  NAD 83(1986)-  39 06 36.97511(N)    077 15 58.10167(W) AD(       ) 2
 JV4507  NAD 27      -  39 06 36.58714(N)    077 15 59.15658(W) AD(       ) 2
 JV4507  NGVD 29 (07/19/86)  132.8    (m)          436.     (f) VERT ANG       
 JV4507
 JV4507.Superseded values are not recommended for survey control.
 JV4507
 JV4507.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4507.See file dsdata.pdf to determine how the superseded data were derived.
 JV4507
 JV4507_MARKER: I = METAL ROD
 JV4507_SETTING: 0 = UNSPECIFIED SETTING
 JV4507_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4507
 JV4507  HISTORY     - Date     Condition        Report By
 JV4507  HISTORY     - 1969     MONUMENTED       WSSC
 JV4507
 JV4507                          STATION DESCRIPTION
 JV4507
 JV4507'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4507'THE STATION IS ABOUT 1-1/2 MILES SOUTHEAST OF DARNESTOWN AND
 JV4507'3 MILES NORTH OF TRAVILAH.
 JV4507'
 JV4507'THE STATION IS ON THE WEST SIDE OF JONES LAND AND IS 200 FEET
 JV4507'NORTH OF SCARLET OAK DRIVE.
 JV4507'
 JV4507'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4507'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 7.20 FEET
 JV4507'SOUTH OF POWER LINE POLE NO. 613547, 9.80 FEET NORTHWEST OF
 JV4507'THE CENTER OF A FIRE HYDRANT, 70.64 FEET SOUTHEAST OF THE
 JV4507'SOUTHEAST CORNER OF THE GARAGE ON HOUSE 15606 AND IS 79.88
 JV4507'FEET SOUTHEAST OF THE NORTHEAST CORNER OF THE GARAGE ON
 JV4507'HOUSE 15606.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4468 ***********************************************************************
 JV4468  DESIGNATION -  17065 WSSC 1969
 JV4468  PID         -  JV4468
 JV4468  STATE/COUNTY-  MD/MONTGOMERY
 JV4468  COUNTRY     -  US
 JV4468  USGS QUAD   -  GERMANTOWN (2016)
 JV4468
 JV4468                         *CURRENT SURVEY CONTROL
 JV4468  ______________________________________________________________________
 JV4468* NAD 83(1993) POSITION- 39 08 25.62496(N) 077 16 56.03858(W)   ADJUSTED
 JV4468* NAVD 88 ORTHO HEIGHT -   117.2   (meters)      385.    (feet) VERTCON3
 JV4468  ______________________________________________________________________
 JV4468  GEOID HEIGHT    -        -31.825 (meters)                     GEOID18
 JV4468  LAPLACE CORR    -          2.81  (seconds)                    DEFLEC18
 JV4468  HORZ ORDER      -  SECOND
 JV4468
 JV4468.The horizontal coordinates were established by classical geodetic methods
 JV4468.and adjusted by the National Geodetic Survey in November 1994.
 JV4468
 JV4468.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4468.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4468
 JV4468.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4468.GEOID18 height accuracy estimate available here.
 JV4468
 JV4468.Click photographs - Photos may exist for this station.
 JV4468
 JV4468.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4468
 JV4468. The following values were computed from the NAD 83(1993) position.
 JV4468
 JV4468;                    North         East     Units Scale Factor Converg.
 JV4468;SPC MD       -   163,635.702   375,600.588   MT  0.99996049   -0 10 37.7
 JV4468;SPC MD       -   536,861.47  1,232,282.93   sFT  0.99996049   -0 10 37.7
 JV4468;UTM  18      - 4,334,843.187   302,758.035   MT  1.00007905   -1 26 27.8
 JV4468
 JV4468!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4468!SPC MD       -   0.99998661  x   0.99996049  =   0.99994710
 JV4468!UTM  18      -   0.99998661  x   1.00007905  =   1.00006566
 JV4468
 JV4468:                Primary Azimuth Mark                     Grid Az
 JV4468:SPC MD       -  ATHEY                                    188 38 59.2
 JV4468:UTM  18      -  ATHEY                                    189 54 49.3
 JV4468
 JV4468_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0275834843(NAD 83)
 JV4468
 JV4468|---------------------------------------------------------------------|
 JV4468| PID    Reference Object                     Distance      Geod. Az  |
 JV4468|                                                           dddmmss.s |
 JV4468| JV2900 ATHEY                               APPROX. 4.2 KM 1882821.5 |
 JV4468|---------------------------------------------------------------------|
 JV4468
 JV4468                          SUPERSEDED SURVEY CONTROL
 JV4468
 JV4468  NAD 83(1991)-  39 08 25.62410(N)    077 16 56.03854(W) AD(       ) 2
 JV4468  NAD 83(1986)-  39 08 25.62458(N)    077 16 56.04894(W) AD(       ) 2
 JV4468  NAD 27      -  39 08 25.23839(N)    077 16 57.10150(W) AD(       ) 2
 JV4468  NGVD 29 (07/19/86)  117.4    (m)          385.     (f) VERT ANG       
 JV4468
 JV4468.Superseded values are not recommended for survey control.
 JV4468
 JV4468.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4468.See file dsdata.pdf to determine how the superseded data were derived.
 JV4468
 JV4468_MARKER: I = METAL ROD
 JV4468_SETTING: 0 = UNSPECIFIED SETTING
 JV4468_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4468
 JV4468  HISTORY     - Date     Condition        Report By
 JV4468  HISTORY     - 1969     MONUMENTED       WSSC
 JV4468
 JV4468                          STATION DESCRIPTION
 JV4468
 JV4468'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4468'THE STATION IS ABOUT 1-1/2 MILES SOUTH OF OLD GERMANTOWN AND
 JV4468'1/2 MILE EAST OF BROWNSTOWN.
 JV4468'
 JV4468'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 118 AND
 JV4468'RIFFLE FORD ROAD, GO SOUTHEAST ON RIFFLE FORD ROAD FOR .4 MILES
 JV4468'TO THE STATION ON THE RIGHT.
 JV4468'
 JV4468'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4468'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 4 FEET SOUTH OF
 JV4468'THE CREST OF A SLOPE AND 46.88 FEET NORTHEAST OF THE NORTHWEST
 JV4468'CORNER, 26.43 FEET NORTHEAST OF THE NORTHEAST CORNER AND 45.99
 JV4468'FEET NORTHEAST OF THE SOUTHEAST CORNER OF A WHITE HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4469 ***********************************************************************
 JV4469  DESIGNATION -  17066 WSSC 1969
 JV4469  PID         -  JV4469
 JV4469  STATE/COUNTY-  MD/MONTGOMERY
 JV4469  COUNTRY     -  US
 JV4469  USGS QUAD   -  GERMANTOWN (2016)
 JV4469
 JV4469                         *CURRENT SURVEY CONTROL
 JV4469  ______________________________________________________________________
 JV4469* NAD 83(1993) POSITION- 39 08 45.96342(N) 077 17 22.23421(W)   ADJUSTED
 JV4469* NAVD 88 ORTHO HEIGHT -   131.6   (meters)      432.    (feet) VERTCON3
 JV4469  ______________________________________________________________________
 JV4469  GEOID HEIGHT    -        -31.841 (meters)                     GEOID18
 JV4469  LAPLACE CORR    -          2.94  (seconds)                    DEFLEC18
 JV4469  HORZ ORDER      -  SECOND
 JV4469
 JV4469.The horizontal coordinates were established by classical geodetic methods
 JV4469.and adjusted by the National Geodetic Survey in November 1994.
 JV4469
 JV4469.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4469.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4469
 JV4469.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4469.GEOID18 height accuracy estimate available here.
 JV4469
 JV4469.Click photographs - Photos may exist for this station.
 JV4469
 JV4469.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4469
 JV4469. The following values were computed from the NAD 83(1993) position.
 JV4469
 JV4469;                    North         East     Units Scale Factor Converg.
 JV4469;SPC MD       -   164,264.850   374,973.510   MT  0.99996095   -0 10 54.1
 JV4469;SPC MD       -   538,925.60  1,230,225.59   sFT  0.99996095   -0 10 54.1
 JV4469;UTM  18      - 4,335,486.091   302,144.915   MT  1.00008204   -1 26 45.0
 JV4469
 JV4469!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4469!SPC MD       -   0.99998435  x   0.99996095  =   0.99994530
 JV4469!UTM  18      -   0.99998435  x   1.00008204  =   1.00006639
 JV4469
 JV4469_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0214435486(NAD 83)
 JV4469
 JV4469                          SUPERSEDED SURVEY CONTROL
 JV4469
 JV4469  NAD 83(1991)-  39 08 45.96260(N)    077 17 22.23414(W) AD(       ) 2
 JV4469  NAD 83(1986)-  39 08 45.96306(N)    077 17 22.24454(W) AD(       ) 2
 JV4469  NAD 27      -  39 08 45.57726(N)    077 17 23.29617(W) AD(       ) 2
 JV4469  NGVD 29 (07/19/86)  131.8    (m)          432.     (f) VERT ANG       
 JV4469
 JV4469.Superseded values are not recommended for survey control.
 JV4469
 JV4469.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4469.See file dsdata.pdf to determine how the superseded data were derived.
 JV4469
 JV4469_MARKER: I = METAL ROD
 JV4469_SETTING: 0 = UNSPECIFIED SETTING
 JV4469_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4469
 JV4469  HISTORY     - Date     Condition        Report By
 JV4469  HISTORY     - 1969     MONUMENTED       WSSC
 JV4469
 JV4469                          STATION DESCRIPTION
 JV4469
 JV4469'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4469'THE STATION IS ABOUT 1-1/2 MILES SOUTH OF OLD GERMANTOWN AND
 JV4469'1/2 MILE NORTH OF BROWNSTOWN.
 JV4469'
 JV4469'THE STATION IS LOCATED ON THE WEST SIDE OF RIFFLE FORD ROAD
 JV4469'AT THE GERMANTOWN BAPTIST CHURCH.
 JV4469'
 JV4469'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4469'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 8.90 FEET
 JV4469'SOUTHWEST OF C AND P POLE NO. 3, 37.20 FEET NORTHWEST OF
 JV4469'PEPCO POLE NO. 639872, AND 53.66 FEET SOUTHEAST OF THE
 JV4469'SOUTHEAST CORNER OF A CONCRETE SLAB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4530 ***********************************************************************
 JV4530  DESIGNATION -  17067 WSSC 1969
 JV4530  PID         -  JV4530
 JV4530  STATE/COUNTY-  MD/MONTGOMERY
 JV4530  COUNTRY     -  US
 JV4530  USGS QUAD   -  STERLING (2019)
 JV4530
 JV4530                         *CURRENT SURVEY CONTROL
 JV4530  ______________________________________________________________________
 JV4530* NAD 83(1993) POSITION- 39 05 37.90760(N) 077 25 04.64956(W)   ADJUSTED
 JV4530* NAVD 88 ORTHO HEIGHT -    79.6   (meters)      261.    (feet) VERTCON3
 JV4530  ______________________________________________________________________
 JV4530  GEOID HEIGHT    -        -32.059 (meters)                     GEOID18
 JV4530  LAPLACE CORR    -          4.44  (seconds)                    DEFLEC18
 JV4530  HORZ ORDER      -  SECOND
 JV4530
 JV4530.The horizontal coordinates were established by classical geodetic methods
 JV4530.and adjusted by the National Geodetic Survey in November 1994.
 JV4530
 JV4530.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4530.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4530
 JV4530.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4530.GEOID18 height accuracy estimate available here.
 JV4530
 JV4530.Click photographs - Photos may exist for this station.
 JV4530
 JV4530.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4530
 JV4530. The following values were computed from the NAD 83(1993) position.
 JV4530
 JV4530;                    North         East     Units Scale Factor Converg.
 JV4530;SPC MD       -   158,508.858   363,843.347   MT  0.99995707   -0 15 44.4
 JV4530;SPC MD       -   520,041.14  1,193,709.38   sFT  0.99995707   -0 15 44.4
 JV4530;UTM  18      - 4,329,976.105   290,888.830   MT  1.00013846   -1 31 31.1
 JV4530
 JV4530!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4530!SPC MD       -   0.99999254  x   0.99995707  =   0.99994961
 JV4530!UTM  18      -   0.99999254  x   1.00013846  =   1.00013100
 JV4530
 JV4530:                Primary Azimuth Mark                     Grid Az
 JV4530:SPC MD       -  AUXIER                                   255 56 54.7
 JV4530:UTM  18      -  AUXIER                                   257 12 41.4
 JV4530
 JV4530_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9088829976(NAD 83)
 JV4530
 JV4530|---------------------------------------------------------------------|
 JV4530| PID    Reference Object                     Distance      Geod. Az  |
 JV4530|                                                           dddmmss.s |
 JV4530| JV4524 AUXIER                              APPROX. 1.7 KM 2554110.3 |
 JV4530|---------------------------------------------------------------------|
 JV4530
 JV4530                          SUPERSEDED SURVEY CONTROL
 JV4530
 JV4530  NAD 83(1991)-  39 05 37.90773(N)    077 25 04.65071(W) AD(       ) 2
 JV4530  NAD 83(1986)-  39 05 37.90731(N)    077 25 04.65993(W) AD(       ) 2
 JV4530  NAD 27      -  39 05 37.52081(N)    077 25 05.69897(W) AD(       ) 2
 JV4530  NGVD 29 (07/19/86)   79.8    (m)          262.     (f) VERT ANG       
 JV4530
 JV4530.Superseded values are not recommended for survey control.
 JV4530
 JV4530.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4530.See file dsdata.pdf to determine how the superseded data were derived.
 JV4530
 JV4530_MARKER: I = METAL ROD
 JV4530_SETTING: 0 = UNSPECIFIED SETTING
 JV4530_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4530
 JV4530  HISTORY     - Date     Condition        Report By
 JV4530  HISTORY     - 1969     MONUMENTED       WSSC
 JV4530
 JV4530                          STATION DESCRIPTION
 JV4530
 JV4530'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4530'THE STATION IS ABOUT 3-3/4 MILES SOUTH OF POOLESVILLE, 1-1/2
 JV4530'MILES NORTH OF THE POTOMAC RIVER.
 JV4530'
 JV4530'TO REACH THE STATION FROM THE INTERSECTION OF RIVER ROAD AND
 JV4530'WILLARD ROAD, GO NORTH ON WILLARD ROAD FOR .6 MILE TO THE
 JV4530'STATION ON THE RIGHT.
 JV4530'
 JV4530'THE STATION MARK IS A CONCRETE MONUMENT WITH A IRON ROD
 JV4530'CENTER.  IT IS 53.04 FEET NORTHEAST OF POWER LINE POLE 651667,
 JV4530'65.21 FEET SOUTHEAST OF A 30-INCH CEDAR TREE, 22.60 FEET SOUTHWEST
 JV4530'OF A 18-INCH LOCUST TREE, 17.13 FEET NORTHWEST OF A 24-INCH
 JV4530'TWIN LOCUST TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4529 ***********************************************************************
 JV4529  DESIGNATION -  17068 WSSC 1969
 JV4529  PID         -  JV4529
 JV4529  STATE/COUNTY-  MD/MONTGOMERY
 JV4529  COUNTRY     -  US
 JV4529  USGS QUAD   -  STERLING (2019)
 JV4529
 JV4529                         *CURRENT SURVEY CONTROL
 JV4529  ______________________________________________________________________
 JV4529* NAD 83(1993) POSITION- 39 06 10.39319(N) 077 25 04.10832(W)   ADJUSTED
 JV4529* NAVD 88 ORTHO HEIGHT -    86.5   (meters)      284.    (feet) VERTCON3
 JV4529  ______________________________________________________________________
 JV4529  GEOID HEIGHT    -        -32.070 (meters)                     GEOID18
 JV4529  LAPLACE CORR    -          4.51  (seconds)                    DEFLEC18
 JV4529  HORZ ORDER      -  SECOND
 JV4529
 JV4529.The horizontal coordinates were established by classical geodetic methods
 JV4529.and adjusted by the National Geodetic Survey in November 1994.
 JV4529
 JV4529.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4529.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4529
 JV4529.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4529.GEOID18 height accuracy estimate available here.
 JV4529
 JV4529.Click photographs - Photos may exist for this station.
 JV4529
 JV4529.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4529
 JV4529. The following values were computed from the NAD 83(1993) position.
 JV4529
 JV4529;                    North         East     Units Scale Factor Converg.
 JV4529;SPC MD       -   159,510.541   363,860.938   MT  0.99995768   -0 15 44.0
 JV4529;SPC MD       -   523,327.50  1,193,767.09   sFT  0.99995768   -0 15 44.0
 JV4529;UTM  18      - 4,330,977.338   290,928.504   MT  1.00013825   -1 31 31.8
 JV4529
 JV4529!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4529!SPC MD       -   0.99999146  x   0.99995768  =   0.99994914
 JV4529!UTM  18      -   0.99999146  x   1.00013825  =   1.00012971
 JV4529
 JV4529_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9092830977(NAD 83)
 JV4529
 JV4529                          SUPERSEDED SURVEY CONTROL
 JV4529
 JV4529  NAD 83(1991)-  39 06 10.39332(N)    077 25 04.10936(W) AD(       ) 2
 JV4529  NAD 83(1986)-  39 06 10.39290(N)    077 25 04.11870(W) AD(       ) 2
 JV4529  NAD 27      -  39 06 10.00688(N)    077 25 05.15744(W) AD(       ) 2
 JV4529  NGVD 29 (07/19/86)   86.7    (m)          284.     (f) VERT ANG       
 JV4529
 JV4529.Superseded values are not recommended for survey control.
 JV4529
 JV4529.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4529.See file dsdata.pdf to determine how the superseded data were derived.
 JV4529
 JV4529_MARKER: I = METAL ROD
 JV4529_SETTING: 0 = UNSPECIFIED SETTING
 JV4529_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4529
 JV4529  HISTORY     - Date     Condition        Report By
 JV4529  HISTORY     - 1969     MONUMENTED       WSSC
 JV4529
 JV4529                          STATION DESCRIPTION
 JV4529
 JV4529'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4529'THE STATION IS ABOUT 3-1/4 MILES SOUTH OF POOLEVILLE 2 MILES
 JV4529'NORTH OF THE POTOMAC RIVER.
 JV4529'
 JV4529'TO REACH THE STATION FROM THE INTERSECTION OF RIVER ROAD AND
 JV4529'WILLARD ROAD, GO NORTH ON WILLARD ROAD FOR 1.1 MILES TO THE
 JV4529'STATION ON THE RIGHT.
 JV4529'
 JV4529'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4529'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 46.74 FEET
 JV4529'NORTHEAST OF POWER LINE POLE 651683, 49.90 FEET EAST OF A
 JV4529'12-INCH LOCUST TREE, 92.48 FEET SOUTHEAST OF POWER LINE
 JV4529'POLE 651684, AND 27.24 FEET WEST OF A 18-INCH CEDAR TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4528 ***********************************************************************
 JV4528  DESIGNATION -  17069 WSSC 1969
 JV4528  PID         -  JV4528
 JV4528  STATE/COUNTY-  MD/MONTGOMERY
 JV4528  COUNTRY     -  US
 JV4528  USGS QUAD   -  STERLING (2019)
 JV4528
 JV4528                         *CURRENT SURVEY CONTROL
 JV4528  ______________________________________________________________________
 JV4528* NAD 83(1993) POSITION- 39 05 54.34779(N) 077 24 21.22818(W)   ADJUSTED
 JV4528* NAVD 88 ORTHO HEIGHT -    84.7   (meters)      278.    (feet) VERTCON3
 JV4528  ______________________________________________________________________
 JV4528  GEOID HEIGHT    -        -32.036 (meters)                     GEOID18
 JV4528  LAPLACE CORR    -          4.58  (seconds)                    DEFLEC18
 JV4528  HORZ ORDER      -  SECOND
 JV4528
 JV4528.The horizontal coordinates were established by classical geodetic methods
 JV4528.and adjusted by the National Geodetic Survey in November 1994.
 JV4528
 JV4528.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4528.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4528
 JV4528.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4528.GEOID18 height accuracy estimate available here.
 JV4528
 JV4528.Click photographs - Photos may exist for this station.
 JV4528
 JV4528.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4528
 JV4528. The following values were computed from the NAD 83(1993) position.
 JV4528
 JV4528;                    North         East     Units Scale Factor Converg.
 JV4528;SPC MD       -   159,011.108   364,889.008   MT  0.99995737   -0 15 17.1
 JV4528;SPC MD       -   521,688.94  1,197,140.02   sFT  0.99995737   -0 15 17.1
 JV4528;UTM  18      - 4,330,455.270   291,945.496   MT  1.00013303   -1 31 04.2
 JV4528
 JV4528!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4528!SPC MD       -   0.99999174  x   0.99995737  =   0.99994911
 JV4528!UTM  18      -   0.99999174  x   1.00013303  =   1.00012477
 JV4528
 JV4528:                Primary Azimuth Mark                     Grid Az
 JV4528:SPC MD       -  AUXIER                                   251 14 26.2
 JV4528:UTM  18      -  AUXIER                                   252 30 13.3
 JV4528
 JV4528_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9194530455(NAD 83)
 JV4528
 JV4528|---------------------------------------------------------------------|
 JV4528| PID    Reference Object                     Distance      Geod. Az  |
 JV4528|                                                           dddmmss.s |
 JV4528| JV4526 17070 WSSC 1969                     462.002 METERS 0591054.0 |
 JV4528| JV4524 AUXIER                              APPROX. 2.8 KM 2505909.1 |
 JV4528|---------------------------------------------------------------------|
 JV4528
 JV4528                          SUPERSEDED SURVEY CONTROL
 JV4528
 JV4528  NAD 83(1991)-  39 05 54.34783(N)    077 24 21.22928(W) AD(       ) 2
 JV4528  NAD 83(1986)-  39 05 54.34750(N)    077 24 21.23855(W) AD(       ) 2
 JV4528  NAD 27      -  39 05 53.96100(N)    077 24 22.27881(W) AD(       ) 2
 JV4528  NGVD 29 (07/19/86)   84.9    (m)          279.     (f) VERT ANG       
 JV4528
 JV4528.Superseded values are not recommended for survey control.
 JV4528
 JV4528.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4528.See file dsdata.pdf to determine how the superseded data were derived.
 JV4528
 JV4528_MARKER: I = METAL ROD
 JV4528_SETTING: 0 = UNSPECIFIED SETTING
 JV4528_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4528
 JV4528  HISTORY     - Date     Condition        Report By
 JV4528  HISTORY     - 1969     MONUMENTED       WSSC
 JV4528
 JV4528                          STATION DESCRIPTION
 JV4528
 JV4528'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4528'THE STATION IS ABOUT 3-1/2 MILES SOUTHEAST OF POOLESVILLE AND
 JV4528'IS 2 MILES NORTH OF THE POTOMAC RIVER.
 JV4528'
 JV4528'TO REACH THE STATION FROM THE INTERSECTION OF HUGHS ROAD AND
 JV4528'SUGARLAND ROAD, GO SOUTH ON HUGHS ROAD FOR .25 MILE TO THE
 JV4528'STATION ON THE LEFT.
 JV4528'
 JV4528'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4528'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 22.33 FEET SOUTH
 JV4528'OF POWER LINE POLE 4, 18.69 FEET NORTHWEST OF A 7-INCH CEDAR
 JV4528'TREE, 60.73 FEET NORTHEAST OF A FENCE POST, 56.26 FEET
 JV4528'SOUTHEAST OF A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4526 ***********************************************************************
 JV4526  DESIGNATION -  17070 WSSC 1969
 JV4526  PID         -  JV4526
 JV4526  STATE/COUNTY-  MD/MONTGOMERY
 JV4526  COUNTRY     -  US
 JV4526  USGS QUAD   -  STERLING (2019)
 JV4526
 JV4526                         *CURRENT SURVEY CONTROL
 JV4526  ______________________________________________________________________
 JV4526* NAD 83(1993) POSITION- 39 06 02.02276(N) 077 24 04.71609(W)   ADJUSTED
 JV4526* NAVD 88 ORTHO HEIGHT -    83.8   (meters)      275.    (feet) VERTCON3
 JV4526  ______________________________________________________________________
 JV4526  GEOID HEIGHT    -        -32.028 (meters)                     GEOID18
 JV4526  LAPLACE CORR    -          4.60  (seconds)                    DEFLEC18
 JV4526  HORZ ORDER      -  SECOND
 JV4526
 JV4526.The horizontal coordinates were established by classical geodetic methods
 JV4526.and adjusted by the National Geodetic Survey in November 1994.
 JV4526
 JV4526.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4526.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4526
 JV4526.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4526.GEOID18 height accuracy estimate available here.
 JV4526
 JV4526.Click photographs - Photos may exist for this station.
 JV4526
 JV4526.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4526
 JV4526. The following values were computed from the NAD 83(1993) position.
 JV4526
 JV4526;                    North         East     Units Scale Factor Converg.
 JV4526;SPC MD       -   159,246.024   365,286.805   MT  0.99995752   -0 15 06.8
 JV4526;SPC MD       -   522,459.66  1,198,445.13   sFT  0.99995752   -0 15 06.8
 JV4526;UTM  18      - 4,330,681.399   292,348.445   MT  1.00013096   -1 30 54.0
 JV4526
 JV4526!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4526!SPC MD       -   0.99999188  x   0.99995752  =   0.99994940
 JV4526!UTM  18      -   0.99999188  x   1.00013096  =   1.00012284
 JV4526
 JV4526_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9234830681(NAD 83)
 JV4526
 JV4526                          SUPERSEDED SURVEY CONTROL
 JV4526
 JV4526  NAD 83(1991)-  39 06 02.02276(N)    077 24 04.71716(W) AD(       ) 2
 JV4526  NAD 83(1986)-  39 06 02.02248(N)    077 24 04.72646(W) AD(       ) 2
 JV4526  NAD 27      -  39 06 01.63600(N)    077 24 05.76717(W) AD(       ) 2
 JV4526  NGVD 29 (07/19/86)   84.0    (m)          276.     (f) VERT ANG       
 JV4526
 JV4526.Superseded values are not recommended for survey control.
 JV4526
 JV4526.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4526.See file dsdata.pdf to determine how the superseded data were derived.
 JV4526
 JV4526_MARKER: I = METAL ROD
 JV4526_SETTING: 0 = UNSPECIFIED SETTING
 JV4526_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4526
 JV4526  HISTORY     - Date     Condition        Report By
 JV4526  HISTORY     - 1969     MONUMENTED       WSSC
 JV4526
 JV4526                          STATION DESCRIPTION
 JV4526
 JV4526'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4526'THE STATION IS ABOUT 3-1/2 MILES SOUTHEAST OF POOLESVILLE, AND
 JV4526'IS 2 MILES NORTH OF THE POTOMAC RIVER.
 JV4526'
 JV4526'TO REACH THE STATION FROM THE INTERSECTION OF HUGHS ROAD AND
 JV4526'SUGARLAND ROAD, GO EAST ON SUGARLAND ROAD FOR .3 MILE TO THE
 JV4526'STATION ON THE RIGHT.
 JV4526'
 JV4526'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4526'AND IS 3 INCHES ABOVE THE SURFACE.  IT IS 31.85 FEET SOUTHEAST
 JV4526'OF POWER LINE POLE M-78, 4.83 FEET SOUTHWEST OF POWER LINE POLE
 JV4526'632823, 71.16 SOUTHWEST OF A 48-INCH TWIN WALNUT TREE, 9.29 FEET
 JV4526'SOUTHEAST OF A 6-INCH SCYAMORE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4527 ***********************************************************************
 JV4527  DESIGNATION -  17071 WSSC 1969
 JV4527  PID         -  JV4527
 JV4527  STATE/COUNTY-  MD/MONTGOMERY
 JV4527  COUNTRY     -  US
 JV4527  USGS QUAD   -  STERLING (2019)
 JV4527
 JV4527                         *CURRENT SURVEY CONTROL
 JV4527  ______________________________________________________________________
 JV4527* NAD 83(1993) POSITION- 39 05 06.85349(N) 077 24 19.82915(W)   ADJUSTED
 JV4527* NAVD 88 ORTHO HEIGHT -    80.8   (meters)      265.    (feet) VERTCON3
 JV4527  ______________________________________________________________________
 JV4527  GEOID HEIGHT    -        -32.019 (meters)                     GEOID18
 JV4527  LAPLACE CORR    -          4.38  (seconds)                    DEFLEC18
 JV4527  HORZ ORDER      -  SECOND
 JV4527
 JV4527.The horizontal coordinates were established by classical geodetic methods
 JV4527.and adjusted by the National Geodetic Survey in November 1994.
 JV4527
 JV4527.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4527.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4527
 JV4527.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4527.GEOID18 height accuracy estimate available here.
 JV4527
 JV4527.Click photographs - Photos may exist for this station.
 JV4527
 JV4527.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4527
 JV4527. The following values were computed from the NAD 83(1993) position.
 JV4527
 JV4527;                    North         East     Units Scale Factor Converg.
 JV4527;SPC MD       -   157,546.401   364,916.119   MT  0.99995651   -0 15 16.2
 JV4527;SPC MD       -   516,883.48  1,197,228.97   sFT  0.99995651   -0 15 16.2
 JV4527;UTM  18      - 4,328,990.064   291,940.317   MT  1.00013305   -1 31 01.8
 JV4527
 JV4527!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4527!SPC MD       -   0.99999235  x   0.99995651  =   0.99994886
 JV4527!UTM  18      -   0.99999235  x   1.00013305  =   1.00012540
 JV4527
 JV4527:                Primary Azimuth Mark                     Grid Az
 JV4527:SPC MD       -  AUXIER                                   281 26 37.2
 JV4527:UTM  18      -  AUXIER                                   282 42 22.8
 JV4527
 JV4527_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9194028990(NAD 83)
 JV4527
 JV4527|---------------------------------------------------------------------|
 JV4527| PID    Reference Object                     Distance      Geod. Az  |
 JV4527|                                                           dddmmss.s |
 JV4527| JV4525 17072 WSSC 1969                     433.631 METERS 0974532.8 |
 JV4527| JV4524 AUXIER                              APPROX. 2.8 KM 2811121.0 |
 JV4527|---------------------------------------------------------------------|
 JV4527
 JV4527                          SUPERSEDED SURVEY CONTROL
 JV4527
 JV4527  NAD 83(1991)-  39 05 06.85353(N)    077 24 19.83041(W) AD(       ) 2
 JV4527  NAD 83(1986)-  39 05 06.85321(N)    077 24 19.83953(W) AD(       ) 2
 JV4527  NAD 27      -  39 05 06.46598(N)    077 24 20.88027(W) AD(       ) 2
 JV4527  NGVD 29 (07/19/86)   81.0    (m)          266.     (f) VERT ANG       
 JV4527
 JV4527.Superseded values are not recommended for survey control.
 JV4527
 JV4527.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4527.See file dsdata.pdf to determine how the superseded data were derived.
 JV4527
 JV4527_MARKER: I = METAL ROD
 JV4527_SETTING: 0 = UNSPECIFIED SETTING
 JV4527_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4527
 JV4527  HISTORY     - Date     Condition        Report By
 JV4527  HISTORY     - 1969     MONUMENTED       WSSC
 JV4527
 JV4527                          STATION DESCRIPTION
 JV4527
 JV4527'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4527'THE STATION IS ABOUT 4-1/2 MILES SOUTHEAST OF POOLESVILLE AND 1
 JV4527'MILE NORTH OF THE POTOMAC RIVER.
 JV4527'
 JV4527'TO REACH THE STATION FROM THE INTERSECTION OF HUGHS ROAD AND
 JV4527'RIVER ROAD, GO EAST ON RIVER ROAD FOR .15 MILE AND THE
 JV4527'STATION IS ON THE RIGHT.
 JV4527'
 JV4527'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4527'CENTER AND IS 4 INCHES ABOVE THE SURFACE.  IT IS 39.14 FEET
 JV4527'NORTHWEST OF POWER LINE POLE 646377, 14.73 FEET SOUTHEAST OF
 JV4527'A X CUT IN A STEEL GUARD RAIL BEAM, 5.02 FEET SOUTH OF A X CUT
 JV4527'IN A STEEL GUARD RAIL, 15.03 FEET SOUTHWEST OF A X CUT IN
 JV4527'A STEEL GUARD RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4525 ***********************************************************************
 JV4525  DESIGNATION -  17072 WSSC 1969
 JV4525  PID         -  JV4525
 JV4525  STATE/COUNTY-  MD/MONTGOMERY
 JV4525  COUNTRY     -  US
 JV4525  USGS QUAD   -  STERLING (2019)
 JV4525
 JV4525                         *CURRENT SURVEY CONTROL
 JV4525  ______________________________________________________________________
 JV4525* NAD 83(1993) POSITION- 39 05 04.95468(N) 077 24 01.95206(W)   ADJUSTED
 JV4525* NAVD 88 ORTHO HEIGHT -    75.6   (meters)      248.    (feet) VERTCON3
 JV4525  ______________________________________________________________________
 JV4525  GEOID HEIGHT    -        -32.007 (meters)                     GEOID18
 JV4525  LAPLACE CORR    -          4.38  (seconds)                    DEFLEC18
 JV4525  HORZ ORDER      -  SECOND
 JV4525
 JV4525.The horizontal coordinates were established by classical geodetic methods
 JV4525.and adjusted by the National Geodetic Survey in November 1994.
 JV4525
 JV4525.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4525.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4525
 JV4525.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4525.GEOID18 height accuracy estimate available here.
 JV4525
 JV4525.Click photographs - Photos may exist for this station.
 JV4525
 JV4525.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4525
 JV4525. The following values were computed from the NAD 83(1993) position.
 JV4525
 JV4525;                    North         East     Units Scale Factor Converg.
 JV4525;SPC MD       -   157,485.952   365,345.497   MT  0.99995648   -0 15 05.0
 JV4525;SPC MD       -   516,685.16  1,198,637.68   sFT  0.99995648   -0 15 05.0
 JV4525;UTM  18      - 4,328,920.155   292,368.334   MT  1.00013086   -1 30 50.4
 JV4525
 JV4525!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4525!SPC MD       -   0.99999316  x   0.99995648  =   0.99994964
 JV4525!UTM  18      -   0.99999316  x   1.00013086  =   1.00012402
 JV4525
 JV4525_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9236828920(NAD 83)
 JV4525
 JV4525                          SUPERSEDED SURVEY CONTROL
 JV4525
 JV4525  NAD 83(1991)-  39 05 04.95468(N)    077 24 01.95333(W) AD(       ) 2
 JV4525  NAD 83(1986)-  39 05 04.95441(N)    077 24 01.96245(W) AD(       ) 2
 JV4525  NAD 27      -  39 05 04.56704(N)    077 24 03.00377(W) AD(       ) 2
 JV4525  NGVD 29 (07/19/86)   75.8    (m)          249.     (f) VERT ANG       
 JV4525
 JV4525.Superseded values are not recommended for survey control.
 JV4525
 JV4525.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4525.See file dsdata.pdf to determine how the superseded data were derived.
 JV4525
 JV4525_MARKER: B = BOLT
 JV4525_SETTING: 0 = UNSPECIFIED SETTING
 JV4525_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4525
 JV4525  HISTORY     - Date     Condition        Report By
 JV4525  HISTORY     - 1969     MONUMENTED       WSSC
 JV4525
 JV4525                          STATION DESCRIPTION
 JV4525
 JV4525'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4525'THE STATION IS ABOUT 4-1/2 MILES SOUTHEAST OF POOLESVILLE AND
 JV4525'1 MILE NORTH OF THE POTOMAC RIVER.
 JV4525'
 JV4525'TO REACH THE STATION FROM THE INTERSECTION OF RIVER ROAD AND
 JV4525'HUGHS ROAD, GO EAST ON RIVER ROAD FOR .45 MILE TO THE
 JV4525'STATION ON THE RIGHT.
 JV4525'
 JV4525'THE STATION IS A BRASS BOLT IN THE CENTER OF A CONCRETE
 JV4525'HEADWALL.  IT IS ON THE WEST SIDE OF A BLUESTONE DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4449 ***********************************************************************
 JV4449  DESIGNATION -  17073 WSSC 1969
 JV4449  PID         -  JV4449
 JV4449  STATE/COUNTY-  MD/MONTGOMERY
 JV4449  COUNTRY     -  US
 JV4449  USGS QUAD   -  GAITHERSBURG (2016)
 JV4449
 JV4449                         *CURRENT SURVEY CONTROL
 JV4449  ______________________________________________________________________
 JV4449* NAD 83(1993) POSITION- 39 11 43.65426(N) 077 14 39.44751(W)   ADJUSTED
 JV4449* NAVD 88 ORTHO HEIGHT -   174.2   (meters)      572.    (feet) VERTCON3
 JV4449  ______________________________________________________________________
 JV4449  GEOID HEIGHT    -        -31.818 (meters)                     GEOID18
 JV4449  LAPLACE CORR    -          2.36  (seconds)                    DEFLEC18
 JV4449  HORZ ORDER      -  SECOND
 JV4449
 JV4449.The horizontal coordinates were established by classical geodetic methods
 JV4449.and adjusted by the National Geodetic Survey in November 1994.
 JV4449
 JV4449.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4449.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4449
 JV4449.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4449.GEOID18 height accuracy estimate available here.
 JV4449
 JV4449.Click photographs - Photos may exist for this station.
 JV4449
 JV4449.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4449
 JV4449. The following values were computed from the NAD 83(1993) position.
 JV4449
 JV4449;                    North         East     Units Scale Factor Converg.
 JV4449;SPC MD       -   169,732.926   378,897.054   MT  0.99996537   -0 09 12.0
 JV4449;SPC MD       -   556,865.44  1,243,098.08   sFT  0.99996537   -0 09 12.0
 JV4449;UTM  18      - 4,340,866.818   306,188.641   MT  1.00006253   -1 25 07.5
 JV4449
 JV4449!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4449!SPC MD       -   0.99997766  x   0.99996537  =   0.99994303
 JV4449!UTM  18      -   0.99997766  x   1.00006253  =   1.00004019
 JV4449
 JV4449:                Primary Azimuth Mark                     Grid Az
 JV4449:SPC MD       -  BRINK                                    016 24 07.9
 JV4449:UTM  18      -  BRINK                                    017 40 03.4
 JV4449
 JV4449_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0618840866(NAD 83)
 JV4449
 JV4449|---------------------------------------------------------------------|
 JV4449| PID    Reference Object                     Distance      Geod. Az  |
 JV4449|                                                           dddmmss.s |
 JV4449| JV4419 BRINK                               APPROX. 2.0 KM 0161455.9 |
 JV4449| JV4370 GAITHERSBURG WASHINGTONIAN TK       APPROX.10.3 KM 1543114.8 |
 JV4449| JV4450 17074 WSSC 1969                     447.637 METERS 2390233.3 |
 JV4449|---------------------------------------------------------------------|
 JV4449
 JV4449                          SUPERSEDED SURVEY CONTROL
 JV4449
 JV4449  NAD 83(1991)-  39 11 43.65362(N)    077 14 39.44736(W) AD(       ) 2
 JV4449  NAD 83(1986)-  39 11 43.65372(N)    077 14 39.45777(W) AD(       ) 2
 JV4449  NAD 27      -  39 11 43.27092(N)    077 14 40.51387(W) AD(       ) 2
 JV4449  NGVD 29 (07/19/86)  174.4    (m)          572.     (f) VERT ANG       
 JV4449
 JV4449.Superseded values are not recommended for survey control.
 JV4449
 JV4449.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4449.See file dsdata.pdf to determine how the superseded data were derived.
 JV4449
 JV4449_MARKER: I = METAL ROD
 JV4449_SETTING: 0 = UNSPECIFIED SETTING
 JV4449_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4449
 JV4449  HISTORY     - Date     Condition        Report By
 JV4449  HISTORY     - 1969     MONUMENTED       WSSC
 JV4449
 JV4449                          STATION DESCRIPTION
 JV4449
 JV4449'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4449'THE STATION IS ABOUT 1 MILE NORTHWEST OF MIDDLEBROOK AND 1 MILE
 JV4449'SOUTH OF BRINK.
 JV4449'
 JV4449'THE STATION IS LOCATED IN A GRASS ISLAND IN THE INTERSECTION
 JV4449'OF ROUTE 355 AND ROUTE 118.
 JV4449'
 JV4449'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4449'CENTER AND PROJECTS .5 FEET ABOVE THE SURFACE.  IT IS 83.16 FEET
 JV4449'NORTHWEST OF C AND P POLE NO. 848 AND 43.00 FEET NORTHWEST OF
 JV4449'PEPCO POLE NO. 610738.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4450 ***********************************************************************
 JV4450  DESIGNATION -  17074 WSSC 1969
 JV4450  PID         -  JV4450
 JV4450  STATE/COUNTY-  MD/MONTGOMERY
 JV4450  COUNTRY     -  US
 JV4450  USGS QUAD   -  GAITHERSBURG (2016)
 JV4450
 JV4450                         *CURRENT SURVEY CONTROL
 JV4450  ______________________________________________________________________
 JV4450* NAD 83(1993) POSITION- 39 11 36.18719(N) 077 14 55.44398(W)   ADJUSTED
 JV4450* NAVD 88 ORTHO HEIGHT -   170.5   (meters)      559.    (feet) VERTCON3
 JV4450  ______________________________________________________________________
 JV4450  GEOID HEIGHT    -        -31.822 (meters)                     GEOID18
 JV4450  LAPLACE CORR    -          2.54  (seconds)                    DEFLEC18
 JV4450  HORZ ORDER      -  SECOND
 JV4450
 JV4450.The horizontal coordinates were established by classical geodetic methods
 JV4450.and adjusted by the National Geodetic Survey in November 1994.
 JV4450
 JV4450.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4450.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4450
 JV4450.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4450.GEOID18 height accuracy estimate available here.
 JV4450
 JV4450.Click photographs - Photos may exist for this station.
 JV4450
 JV4450.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4450
 JV4450. The following values were computed from the NAD 83(1993) position.
 JV4450
 JV4450;                    North         East     Units Scale Factor Converg.
 JV4450;SPC MD       -   169,503.697   378,512.581   MT  0.99996517   -0 09 22.0
 JV4450;SPC MD       -   556,113.38  1,241,836.69   sFT  0.99996517   -0 09 22.0
 JV4450;UTM  18      - 4,340,646.114   305,799.161   MT  1.00006439   -1 25 17.4
 JV4450
 JV4450!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4450!SPC MD       -   0.99997824  x   0.99996517  =   0.99994341
 JV4450!UTM  18      -   0.99997824  x   1.00006439  =   1.00004263
 JV4450
 JV4450:                Primary Azimuth Mark                     Grid Az
 JV4450:SPC MD       -  17073 WSSC 1969                          059 11 45.2
 JV4450:UTM  18      -  17073 WSSC 1969                          060 27 40.6
 JV4450
 JV4450_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0579940646(NAD 83)
 JV4450
 JV4450|---------------------------------------------------------------------|
 JV4450| PID    Reference Object                     Distance      Geod. Az  |
 JV4450|                                                           dddmmss.s |
 JV4450| JV4449 17073 WSSC 1969                     447.637 METERS 0590223.2 |
 JV4450|---------------------------------------------------------------------|
 JV4450
 JV4450                          SUPERSEDED SURVEY CONTROL
 JV4450
 JV4450  NAD 83(1991)-  39 11 36.18655(N)    077 14 55.44382(W) AD(       ) 2
 JV4450  NAD 83(1986)-  39 11 36.18664(N)    077 14 55.45424(W) AD(       ) 2
 JV4450  NAD 27      -  39 11 35.80364(N)    077 14 56.50979(W) AD(       ) 2
 JV4450  NGVD 29 (07/19/86)  170.7    (m)          560.     (f) VERT ANG       
 JV4450
 JV4450.Superseded values are not recommended for survey control.
 JV4450
 JV4450.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4450.See file dsdata.pdf to determine how the superseded data were derived.
 JV4450
 JV4450_MARKER: I = METAL ROD
 JV4450_SETTING: 0 = UNSPECIFIED SETTING
 JV4450_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4450
 JV4450  HISTORY     - Date     Condition        Report By
 JV4450  HISTORY     - 1969     MONUMENTED       WSSC
 JV4450
 JV4450                          STATION DESCRIPTION
 JV4450
 JV4450'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4450'THE STATION IS ABOUT 1 MILE SOUTH OF BRINK AND 1 MILE NORTHWEST
 JV4450'OF MIDDLEBROOK.
 JV4450'
 JV4450'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 355 AND
 JV4450'ROUTE 118, GO WEST ON ROUTE 118 FOR .3 MILES TO A WHITE STUCCO
 JV4450'HOUSE AND THE STATION IS ON THE RIGHT.
 JV4450'
 JV4450'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4450'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 75.79 FEET EAST OF
 JV4450'C AND P POLE NO. 11, 77.00 FEET WEST OF C AND P POLE NO. 10,
 JV4450'AND 88.93 FEET NORTHEAST OF PEPCO POLE NO. 610740.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4465 ***********************************************************************
 JV4465  DESIGNATION -  17075 WSSC 1969
 JV4465  PID         -  JV4465
 JV4465  STATE/COUNTY-  MD/MONTGOMERY
 JV4465  COUNTRY     -  US
 JV4465  USGS QUAD   -  GERMANTOWN (2016)
 JV4465
 JV4465                         *CURRENT SURVEY CONTROL
 JV4465  ______________________________________________________________________
 JV4465* NAD 83(1993) POSITION- 39 13 07.53474(N) 077 15 07.85919(W)   ADJUSTED
 JV4465* NAVD 88 ORTHO HEIGHT -   168.8   (meters)      554.    (feet) VERTCON3
 JV4465  ______________________________________________________________________
 JV4465  GEOID HEIGHT    -        -31.852 (meters)                     GEOID18
 JV4465  LAPLACE CORR    -          3.19  (seconds)                    DEFLEC18
 JV4465  HORZ ORDER      -  SECOND
 JV4465
 JV4465.The horizontal coordinates were established by classical geodetic methods
 JV4465.and adjusted by the National Geodetic Survey in November 1994.
 JV4465
 JV4465.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4465.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4465
 JV4465.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4465.GEOID18 height accuracy estimate available here.
 JV4465
 JV4465.Click photographs - Photos may exist for this station.
 JV4465
 JV4465.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4465
 JV4465. The following values were computed from the NAD 83(1993) position.
 JV4465
 JV4465;                    North         East     Units Scale Factor Converg.
 JV4465;SPC MD       -   172,321.451   378,222.444   MT  0.99996772   -0 09 29.8
 JV4465;SPC MD       -   565,357.96  1,240,884.80   sFT  0.99996772   -0 09 29.8
 JV4465;UTM  18      - 4,343,469.868   305,571.317   MT  1.00006548   -1 25 28.1
 JV4465
 JV4465!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4465!SPC MD       -   0.99997851  x   0.99996772  =   0.99994624
 JV4465!UTM  18      -   0.99997851  x   1.00006548  =   1.00004399
 JV4465
 JV4465_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0557143469(NAD 83)
 JV4465
 JV4465                          SUPERSEDED SURVEY CONTROL
 JV4465
 JV4465  NAD 83(1991)-  39 13 07.53409(N)    077 15 07.85910(W) AD(       ) 2
 JV4465  NAD 83(1986)-  39 13 07.53420(N)    077 15 07.86953(W) AD(       ) 2
 JV4465  NAD 27      -  39 13 07.15273(N)    077 15 08.92444(W) AD(       ) 2
 JV4465  NGVD 29 (07/19/86)  169.0    (m)          554.     (f) VERT ANG       
 JV4465
 JV4465.Superseded values are not recommended for survey control.
 JV4465
 JV4465.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4465.See file dsdata.pdf to determine how the superseded data were derived.
 JV4465
 JV4465_MARKER: B = BOLT
 JV4465_SETTING: 0 = UNSPECIFIED SETTING
 JV4465_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4465
 JV4465  HISTORY     - Date     Condition        Report By
 JV4465  HISTORY     - 1969     MONUMENTED       WSSC
 JV4465
 JV4465                          STATION DESCRIPTION
 JV4465
 JV4465'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4465'THE STATION IS ABOUT 2 MILES SOUTHEAST OF CLARKSBURG AND 3
 JV4465'MILES NORTHEAST OF GERMANTOWN.
 JV4465'
 JV4465'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 355 AND
 JV4465'OLD BALTIMORE ROAD, GO NORTHWEST ON ROUTE 355 FOR .2 MILES TO
 JV4465'A SIDE ROAD RIGHT (GREENRIDGE DRIVE).  TURN RIGHT AND GO 800
 JV4465'FEET TO THE INTERSECTION OF MEADOW LANE AND THE STATION IS ON
 JV4465'THE LEFT.
 JV4465'
 JV4465'THE STATION MARK IS A BRASS BOLT IN THE CENTERLINE OF A
 JV4465'CONCRETE HEADWALL ON THE NORTHWEST CORNER OF GREENRIDGE DRIVE
 JV4465'AND MEADOW LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4466 ***********************************************************************
 JV4466  DESIGNATION -  17076 WSSC 1969
 JV4466  PID         -  JV4466
 JV4466  STATE/COUNTY-  MD/MONTGOMERY
 JV4466  COUNTRY     -  US
 JV4466  USGS QUAD   -  GERMANTOWN (2016)
 JV4466
 JV4466                         *CURRENT SURVEY CONTROL
 JV4466  ______________________________________________________________________
 JV4466* NAD 83(1993) POSITION- 39 13 05.78331(N) 077 15 14.62946(W)   ADJUSTED
 JV4466* NAVD 88 ORTHO HEIGHT -   169.7   (meters)      557.    (feet) VERTCON3
 JV4466  ______________________________________________________________________
 JV4466  GEOID HEIGHT    -        -31.855 (meters)                     GEOID18
 JV4466  LAPLACE CORR    -          3.24  (seconds)                    DEFLEC18
 JV4466  HORZ ORDER      -  SECOND
 JV4466
 JV4466.The horizontal coordinates were established by classical geodetic methods
 JV4466.and adjusted by the National Geodetic Survey in November 1994.
 JV4466
 JV4466.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4466.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4466
 JV4466.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4466.GEOID18 height accuracy estimate available here.
 JV4466
 JV4466.Click photographs - Photos may exist for this station.
 JV4466
 JV4466.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4466
 JV4466. The following values were computed from the NAD 83(1993) position.
 JV4466
 JV4466;                    North         East     Units Scale Factor Converg.
 JV4466;SPC MD       -   172,267.891   378,059.890   MT  0.99996767   -0 09 34.1
 JV4466;SPC MD       -   565,182.24  1,240,351.49   sFT  0.99996767   -0 09 34.1
 JV4466;UTM  18      - 4,343,419.908   305,407.603   MT  1.00006626   -1 25 32.3
 JV4466
 JV4466!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4466!SPC MD       -   0.99997837  x   0.99996767  =   0.99994604
 JV4466!UTM  18      -   0.99997837  x   1.00006626  =   1.00004463
 JV4466
 JV4466:                Primary Azimuth Mark                     Grid Az
 JV4466:SPC MD       -  BRINK                                    114 51 56.3
 JV4466:UTM  18      -  BRINK                                    116 07 54.5
 JV4466
 JV4466_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0540743419(NAD 83)
 JV4466
 JV4466|---------------------------------------------------------------------|
 JV4466| PID    Reference Object                     Distance      Geod. Az  |
 JV4466|                                                           dddmmss.s |
 JV4466| JV4465 17075 WSSC 1969                     171.156 METERS 07136     |
 JV4466| JV4419 BRINK                               APPROX. 1.5 KM 1144222.2 |
 JV4466|---------------------------------------------------------------------|
 JV4466
 JV4466                          SUPERSEDED SURVEY CONTROL
 JV4466
 JV4466  NAD 83(1991)-  39 13 05.78266(N)    077 15 14.62937(W) AD(       ) 2
 JV4466  NAD 83(1986)-  39 13 05.78277(N)    077 15 14.63980(W) AD(       ) 2
 JV4466  NAD 27      -  39 13 05.40129(N)    077 15 15.69450(W) AD(       ) 2
 JV4466  NGVD 29 (07/19/86)  169.9    (m)          557.     (f) VERT ANG       
 JV4466
 JV4466.Superseded values are not recommended for survey control.
 JV4466
 JV4466.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4466.See file dsdata.pdf to determine how the superseded data were derived.
 JV4466
 JV4466_MARKER: I = METAL ROD
 JV4466_SETTING: 0 = UNSPECIFIED SETTING
 JV4466_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4466
 JV4466  HISTORY     - Date     Condition        Report By
 JV4466  HISTORY     - 1969     MONUMENTED       WSSC
 JV4466
 JV4466                          STATION DESCRIPTION
 JV4466
 JV4466'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4466'THE STATION IS ABOUT 2 MILES SOUTHEAST OF CLARKSBURG AND 3
 JV4466'MILES NORTHEAST OF GERMANTOWN.
 JV4466'
 JV4466'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 355 AND
 JV4466'OLD BALTIMORE ROAD, GO NORTHWEST ON ROUTE 355 FOR .2 MILES TO A
 JV4466'SIDE ROAD RIGHT (GREENRIDGE DRIVE).  TURN RIGHT AND GO EAST FOR
 JV4466'200 FEET TO THE STATION ON THE LEFT.
 JV4466'
 JV4466'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4466'CENTER AND PROJECTS 2 INCHES ABOVE THE SURFACE.  IT IS 72.93
 JV4466'FEET NORTH OF POLE NO. 45164, 7.04 FEET WEST OF POLE NO. F-45166,
 JV4466'AND 54.92 FEET SOUTH OF THE SOUTHEAST CORNER OF A BRICK HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4447 ***********************************************************************
 JV4447  DESIGNATION -  17077 WSSC 1969
 JV4447  PID         -  JV4447
 JV4447  STATE/COUNTY-  MD/MONTGOMERY
 JV4447  COUNTRY     -  US
 JV4447  USGS QUAD   -  GAITHERSBURG (2016)
 JV4447
 JV4447                         *CURRENT SURVEY CONTROL
 JV4447  ______________________________________________________________________
 JV4447* NAD 83(1993) POSITION- 39 13 43.96936(N) 077 14 12.00736(W)   ADJUSTED
 JV4447* NAVD 88 ORTHO HEIGHT -   206.0   (meters)      676.    (feet) VERTCON3
 JV4447  ______________________________________________________________________
 JV4447  GEOID HEIGHT    -        -31.840 (meters)                     GEOID18
 JV4447  LAPLACE CORR    -          2.56  (seconds)                    DEFLEC18
 JV4447  HORZ ORDER      -  SECOND
 JV4447
 JV4447.The horizontal coordinates were established by classical geodetic methods
 JV4447.and adjusted by the National Geodetic Survey in November 1994.
 JV4447
 JV4447.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4447.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4447
 JV4447.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4447.GEOID18 height accuracy estimate available here.
 JV4447
 JV4447.Click photographs - Photos may exist for this station.
 JV4447
 JV4447.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4447
 JV4447. The following values were computed from the NAD 83(1993) position.
 JV4447
 JV4447;                    North         East     Units Scale Factor Converg.
 JV4447;SPC MD       -   173,441.425   379,565.117   MT  0.99996879   -0 08 54.7
 JV4447;SPC MD       -   569,032.41  1,245,289.89   sFT  0.99996879   -0 08 54.7
 JV4447;UTM  18      - 4,344,559.999   306,938.541   MT  1.00005895   -1 24 53.8
 JV4447
 JV4447!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4447!SPC MD       -   0.99997268  x   0.99996879  =   0.99994147
 JV4447!UTM  18      -   0.99997268  x   1.00005895  =   1.00003163
 JV4447
 JV4447:                Primary Azimuth Mark                     Grid Az
 JV4447:SPC MD       -  BRINK                                    183 31 16.7
 JV4447:UTM  18      -  BRINK                                    184 47 15.8
 JV4447
 JV4447_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0693844559(NAD 83)
 JV4447
 JV4447|---------------------------------------------------------------------|
 JV4447| PID    Reference Object                     Distance      Geod. Az  |
 JV4447|                                                           dddmmss.s |
 JV4447| JV4419 BRINK                               APPROX. 1.8 KM 1832222.0 |
 JV4447| JV4448 17078 WSSC 1969                     401.771 METERS 3530509.7 |
 JV4447|---------------------------------------------------------------------|
 JV4447
 JV4447                          SUPERSEDED SURVEY CONTROL
 JV4447
 JV4447  NAD 83(1991)-  39 13 43.96875(N)    077 14 12.00731(W) AD(       ) 2
 JV4447  NAD 83(1986)-  39 13 43.96886(N)    077 14 12.01772(W) AD(       ) 2
 JV4447  NAD 27      -  39 13 43.58783(N)    077 14 13.07429(W) AD(       ) 2
 JV4447  NGVD 29 (07/19/86)  206.2    (m)          677.     (f) VERT ANG       
 JV4447
 JV4447.Superseded values are not recommended for survey control.
 JV4447
 JV4447.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4447.See file dsdata.pdf to determine how the superseded data were derived.
 JV4447
 JV4447_MARKER: I = METAL ROD
 JV4447_SETTING: 0 = UNSPECIFIED SETTING
 JV4447_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4447
 JV4447  HISTORY     - Date     Condition        Report By
 JV4447  HISTORY     - 1969     MONUMENTED       WSSC
 JV4447
 JV4447                          STATION DESCRIPTION
 JV4447
 JV4447'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4447'THE STATION IS ABOUT 1-1/2 MILES NORTH OF BRINK AND 1-1/2 MILES
 JV4447'SOUTH OF CEDAR GROVE.
 JV4447'
 JV4447'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 27 AND
 JV4447'JOHNSON ROAD, GO SOUTH ON JOHNSON ROAD FOR .3 MILES TO THE
 JV4447'STATION ON THE LEFT.
 JV4447'
 JV4447'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4447'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 6.55 FEET NORTHWEST
 JV4447'OF POLE NO. 2773, 95.16 FEET SOUTHWEST OF THE SOUTHWEST CORNER
 JV4447'OF HOUSE 60A, 60.11 FEET SOUTH OF A LIGHT POST, AND 21.9 FEET
 JV4447'EAST OF THE EAST EDGE OF ROUTE 27.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4448 ***********************************************************************
 JV4448  DESIGNATION -  17078 WSSC 1969
 JV4448  PID         -  JV4448
 JV4448  STATE/COUNTY-  MD/MONTGOMERY
 JV4448  COUNTRY     -  US
 JV4448  USGS QUAD   -  GAITHERSBURG (2016)
 JV4448
 JV4448                         *CURRENT SURVEY CONTROL
 JV4448  ______________________________________________________________________
 JV4448* NAD 83(1993) POSITION- 39 13 56.90269(N) 077 14 14.02391(W)   ADJUSTED
 JV4448* NAVD 88 ORTHO HEIGHT -   190.5   (meters)      625.    (feet) VERTCON3
 JV4448  ______________________________________________________________________
 JV4448  GEOID HEIGHT    -        -31.844 (meters)                     GEOID18
 JV4448  LAPLACE CORR    -          2.65  (seconds)                    DEFLEC18
 JV4448  HORZ ORDER      -  SECOND
 JV4448
 JV4448.The horizontal coordinates were established by classical geodetic methods
 JV4448.and adjusted by the National Geodetic Survey in November 1994.
 JV4448
 JV4448.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4448.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4448
 JV4448.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4448.GEOID18 height accuracy estimate available here.
 JV4448
 JV4448.Click photographs - Photos may exist for this station.
 JV4448
 JV4448.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4448
 JV4448. The following values were computed from the NAD 83(1993) position.
 JV4448
 JV4448;                    North         East     Units Scale Factor Converg.
 JV4448;SPC MD       -   173,840.386   379,517.788   MT  0.99996918   -0 08 56.0
 JV4448;SPC MD       -   570,341.33  1,245,134.61   sFT  0.99996918   -0 08 56.0
 JV4448;UTM  18      - 4,344,959.944   306,900.038   MT  1.00005913   -1 24 55.5
 JV4448
 JV4448!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4448!SPC MD       -   0.99997511  x   0.99996918  =   0.99994429
 JV4448!UTM  18      -   0.99997511  x   1.00005913  =   1.00003424
 JV4448
 JV4448:                Primary Azimuth Mark                     Grid Az
 JV4448:SPC MD       -  17077 WSSC 1969                          173 14 04.4
 JV4448:UTM  18      -  17077 WSSC 1969                          174 30 03.9
 JV4448
 JV4448_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0690044959(NAD 83)
 JV4448
 JV4448|---------------------------------------------------------------------|
 JV4448| PID    Reference Object                     Distance      Geod. Az  |
 JV4448|                                                           dddmmss.s |
 JV4448| JV4447 17077 WSSC 1969                     401.771 METERS 1730508.4 |
 JV4448|---------------------------------------------------------------------|
 JV4448
 JV4448                          SUPERSEDED SURVEY CONTROL
 JV4448
 JV4448  NAD 83(1991)-  39 13 56.90207(N)    077 14 14.02388(W) AD(       ) 2
 JV4448  NAD 83(1986)-  39 13 56.90218(N)    077 14 14.03429(W) AD(       ) 2
 JV4448  NAD 27      -  39 13 56.52135(N)    077 14 15.09077(W) AD(       ) 2
 JV4448  NGVD 29 (07/19/86)  190.7    (m)          626.     (f) VERT ANG       
 JV4448
 JV4448.Superseded values are not recommended for survey control.
 JV4448
 JV4448.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4448.See file dsdata.pdf to determine how the superseded data were derived.
 JV4448
 JV4448_MARKER: I = METAL ROD
 JV4448_SETTING: 0 = UNSPECIFIED SETTING
 JV4448_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4448
 JV4448  HISTORY     - Date     Condition        Report By
 JV4448  HISTORY     - 1969     MONUMENTED       WSSC
 JV4448  HISTORY     - 20050723 MARK NOT FOUND   GEOCAC
 JV4448
 JV4448                          STATION DESCRIPTION
 JV4448
 JV4448'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4448'THE STATION IS ABOUT 1-1/2 MILES NORTH OF BRINK AND 1-1/2 MILES
 JV4448'SOUTH OF CEDAR GROVE.
 JV4448'
 JV4448'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 27 AND
 JV4448'JOHNSON ROAD, GO SOUTHEAST ON ROUTE 27 FOR .1 MILES TO THE
 JV4448'STATION ON THE LEFT.
 JV4448'
 JV4448'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4448'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS ON THE TOP OF A CUT
 JV4448'BANK AND IS 26.00 FEET SOUTHWEST OF A NAIL IN THE TOP OF A FENCE
 JV4448'POST, 38.00 FEET NORTH OF POLE NO. 2779, 78.81 FEET SOUTHEAST
 JV4448'OF A NAIL IN THE TOP OF A FENCE POST, AND 81.85 FEET NORTHEAST
 JV4448'OF A NAIL IN THE TOP OF A FENCE POST.
 JV4448
 JV4448                          STATION RECOVERY (2005)
 JV4448
 JV4448'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 JV4448'DID NOT OBSERVE THE FENCE POSTS CITED IN THE 1969 DESCRIPTION. MARK
 JV4448'MAY HAVE BEEN LOST IN LANDSCAPING AND GRADING FOR CHURCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5983 ***********************************************************************
 JV5983  DESIGNATION -  17079 WSSC 1969
 JV5983  PID         -  JV5983
 JV5983  STATE/COUNTY-  MD/MONTGOMERY
 JV5983  COUNTRY     -  US
 JV5983  USGS QUAD   -  BELTSVILLE (2016)
 JV5983
 JV5983                         *CURRENT SURVEY CONTROL
 JV5983  ______________________________________________________________________
 JV5983* NAD 83(1991) POSITION- 39 06 42.55623(N) 076 55 56.36367(W)   ADJUSTED
 JV5983* NAVD 88 ORTHO HEIGHT -   150.3   (meters)      493.    (feet) VERTCON3
 JV5983  ______________________________________________________________________
 JV5983  GEOID HEIGHT    -        -32.066 (meters)                     GEOID18
 JV5983  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 JV5983  HORZ ORDER      -  SECOND
 JV5983
 JV5983.The horizontal coordinates were established by classical geodetic methods
 JV5983.and adjusted by the National Geodetic Survey in January 1992.
 JV5983
 JV5983.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5983.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5983
 JV5983.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5983.GEOID18 height accuracy estimate available here.
 JV5983
 JV5983.Click photographs - Photos may exist for this station.
 JV5983
 JV5983.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5983
 JV5983. The following values were computed from the NAD 83(1991) position.
 JV5983
 JV5983;                    North         East     Units Scale Factor Converg.
 JV5983;SPC MD       -   160,421.819   405,853.111   MT  0.99995831   +0 02 32.9
 JV5983;SPC MD       -   526,317.25  1,331,536.42   sFT  0.99995831   +0 02 32.9
 JV5983;UTM  18      - 4,330,963.175   332,933.894   MT  0.99994368   -1 13 09.3
 JV5983
 JV5983!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5983!SPC MD       -   0.99998145  x   0.99995831  =   0.99993976
 JV5983!UTM  18      -   0.99998145  x   0.99994368  =   0.99992513
 JV5983
 JV5983:                Primary Azimuth Mark                     Grid Az
 JV5983:SPC MD       -  BURT RM 3                                023 33 23.4
 JV5983:UTM  18      -  BURT RM 3                                024 49 05.6
 JV5983
 JV5983_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3293330963(NAD 83)
 JV5983
 JV5983|---------------------------------------------------------------------|
 JV5983| PID    Reference Object                     Distance      Geod. Az  |
 JV5983|                                                           dddmmss.s |
 JV5983| JV5933 BURT RM 3                           APPROX. 1.2 KM 0233556.3 |
 JV5983|---------------------------------------------------------------------|
 JV5983
 JV5983                          SUPERSEDED SURVEY CONTROL
 JV5983
 JV5983  NAD 83(1986)-  39 06 42.55559(N)    076 55 56.37353(W) AD(       ) 2
 JV5983  NAD 27      -  39 06 42.16592(N)    076 55 57.46516(W) AD(       ) 2
 JV5983  NGVD 29 (07/19/86)  150.5    (m)          494.     (f) VERT ANG       
 JV5983
 JV5983.Superseded values are not recommended for survey control.
 JV5983
 JV5983.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5983.See file dsdata.pdf to determine how the superseded data were derived.
 JV5983
 JV5983_MARKER: I = METAL ROD
 JV5983_SETTING: 0 = UNSPECIFIED SETTING
 JV5983_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5983
 JV5983  HISTORY     - Date     Condition        Report By
 JV5983  HISTORY     - 1969     MONUMENTED       WSSC
 JV5983
 JV5983                          STATION DESCRIPTION
 JV5983
 JV5983'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5983'THE STATION IS ABOUT 1-1/2 MILES WEST OF THE MONTGOMERY AND
 JV5983'PRINCE GEORGES COUNTY LINE IN THE TOWN OF BURTONSVILLE.
 JV5983'
 JV5983'THE STATION IS IN THE GRASS ISLAND IN THE CENTERLINE OF
 JV5983'ROUTE 29 ABOUT 100 FEET NORTH OF ROUTE 198.
 JV5983'
 JV5983'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5983'CENTER AND IS 1 INCH BELOW THE SURFACE.  IT IS 6.80 FEET EAST OF
 JV5983'THE EAST EDGE OF THE SOUTHBOUND LANE, 2.25 FEET WEST OF THE
 JV5983'WEST EDGE OF THE NORTH BOUND LANE, 63.30 FEET NORTHEAST OF
 JV5983'THE NORTHWEST CORNER OF A METAL COVER AND 91.40 FEET NORTHWEST
 JV5983'OF THE NORTHWEST CORNER OF THE END OF THE CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5999 ***********************************************************************
 JV5999  DESIGNATION -  17081
 JV5999  PID         -  JV5999
 JV5999  STATE/COUNTY-  MD/MONTGOMERY
 JV5999  COUNTRY     -  US
 JV5999  USGS QUAD   -  BELTSVILLE (2016)
 JV5999
 JV5999                         *CURRENT SURVEY CONTROL
 JV5999  ______________________________________________________________________
 JV5999* NAD 83(1991) POSITION- 39 06 47.16926(N) 076 57 45.65338(W)   ADJUSTED
 JV5999* NAVD 88 ORTHO HEIGHT -   152.9   (meters)      502.    (feet) VERTCON3
 JV5999  ______________________________________________________________________
 JV5999  GEOID HEIGHT    -        -32.014 (meters)                     GEOID18
 JV5999  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 JV5999  HORZ ORDER      -  SECOND
 JV5999
 JV5999.The horizontal coordinates were established by classical geodetic methods
 JV5999.and adjusted by the National Geodetic Survey in January 1992.
 JV5999
 JV5999.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5999.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5999
 JV5999.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5999.GEOID18 height accuracy estimate available here.
 JV5999
 JV5999.Click photographs - Photos may exist for this station.
 JV5999
 JV5999.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5999
 JV5999. The following values were computed from the NAD 83(1991) position.
 JV5999
 JV5999;                    North         East     Units Scale Factor Converg.
 JV5999;SPC MD       -   160,562.561   403,227.481   MT  0.99995840   +0 01 24.3
 JV5999;SPC MD       -   526,779.00  1,322,922.16   sFT  0.99995840   +0 01 24.3
 JV5999;UTM  18      - 4,331,161.699   330,312.024   MT  0.99995455   -1 14 18.5
 JV5999
 JV5999!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5999!SPC MD       -   0.99998103  x   0.99995840  =   0.99993944
 JV5999!UTM  18      -   0.99998103  x   0.99995455  =   0.99993559
 JV5999
 JV5999:                Primary Azimuth Mark                     Grid Az
 JV5999:SPC MD       -  BURT RM 3                                073 21 25.5
 JV5999:UTM  18      -  BURT RM 3                                074 37 08.3
 JV5999
 JV5999_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3031231161(NAD 83)
 JV5999
 JV5999|---------------------------------------------------------------------|
 JV5999| PID    Reference Object                     Distance      Geod. Az  |
 JV5999|                                                           dddmmss.s |
 JV5999| JV5997 17082 WSSC 1969                     340.112 METERS 02029     |
 JV5999| JV5933 BURT RM 3                           APPROX. 3.2 KM 0732249.8 |
 JV5999|---------------------------------------------------------------------|
 JV5999
 JV5999                          SUPERSEDED SURVEY CONTROL
 JV5999
 JV5999  NAD 83(1986)-  39 06 47.16881(N)    076 57 45.66323(W) AD(       ) 2
 JV5999  NAD 27      -  39 06 46.77963(N)    076 57 46.75137(W) AD(       ) 2
 JV5999  NGVD 29 (07/19/86)  153.1    (m)          502.     (f) VERT ANG       
 JV5999
 JV5999.Superseded values are not recommended for survey control.
 JV5999
 JV5999.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5999.See file dsdata.pdf to determine how the superseded data were derived.
 JV5999
 JV5999_MARKER: I = METAL ROD
 JV5999_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JV5999_PROJECTION: RECESSED 8 CENTIMETERS
 JV5999_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5999
 JV5999  HISTORY     - Date     Condition        Report By
 JV5999  HISTORY     - 1969     MONUMENTED       WSSC
 JV5999  HISTORY     - 20190531 GOOD             NGS
 JV5999
 JV5999                          STATION DESCRIPTION
 JV5999
 JV5999'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5999'THE STATION IS ABOUT 1-1/2 MILES WEST OF BURTONSVILLE AND
 JV5999'1/2 MILE EAST OF SPENCERVILLE.
 JV5999'
 JV5999'THE STATION IS ON THE WEST SIDE OF PEACH ORCHARD ROAD AT THE
 JV5999'ENTRANCE TO THE METHODIST CAMP GROUNDS.
 JV5999'
 JV5999'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5999'CENTER AND IS 3 INCHES BELOW THE SURFACE.  IT IS 96.22 FEET
 JV5999'SOUTHEAST OF THE NORTHEAST CORNER AND 62.85 FEET SOUTHEAST OF THE
 JV5999'SOUTHEAST CORNER OF HOUSE 15618, 12.85 FEET NORTH OF THE
 JV5999'CENTER OF A MANHOLE AND 11.5 FEET WEST OF THE EDGE OF THE ROAD.
 JV5999
 JV5999                          STATION RECOVERY (2019)
 JV5999
 JV5999'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV5999'THE STATION IS 10.0 FT (3.0 M) WEST OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5997 ***********************************************************************
 JV5997  DESIGNATION -  17082 WSSC 1969
 JV5997  PID         -  JV5997
 JV5997  STATE/COUNTY-  MD/MONTGOMERY
 JV5997  COUNTRY     -  US
 JV5997  USGS QUAD   -  BELTSVILLE (2016)
 JV5997
 JV5997                         *CURRENT SURVEY CONTROL
 JV5997  ______________________________________________________________________
 JV5997* NAD 83(1991) POSITION- 39 06 57.50055(N) 076 57 40.69831(W)   ADJUSTED
 JV5997* NAVD 88 ORTHO HEIGHT -   148.6   (meters)      488.    (feet) VERTCON3
 JV5997  ______________________________________________________________________
 JV5997  GEOID HEIGHT    -        -32.016 (meters)                     GEOID18
 JV5997  LAPLACE CORR    -         -3.49  (seconds)                    DEFLEC18
 JV5997  HORZ ORDER      -  SECOND
 JV5997
 JV5997.The horizontal coordinates were established by classical geodetic methods
 JV5997.and adjusted by the National Geodetic Survey in January 1992.
 JV5997
 JV5997.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5997.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5997
 JV5997.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5997.GEOID18 height accuracy estimate available here.
 JV5997
 JV5997.Click photographs - Photos may exist for this station.
 JV5997
 JV5997.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5997
 JV5997. The following values were computed from the NAD 83(1991) position.
 JV5997
 JV5997;                    North         East     Units Scale Factor Converg.
 JV5997;SPC MD       -   160,881.196   403,346.384   MT  0.99995861   +0 01 27.4
 JV5997;SPC MD       -   527,824.39  1,323,312.26   sFT  0.99995861   +0 01 27.4
 JV5997;UTM  18      - 4,331,477.637   330,437.915   MT  0.99995403   -1 14 15.6
 JV5997
 JV5997!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5997!SPC MD       -   0.99998171  x   0.99995861  =   0.99994032
 JV5997!UTM  18      -   0.99998171  x   0.99995403  =   0.99993574
 JV5997
 JV5997_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3043731477(NAD 83)
 JV5997
 JV5997                          SUPERSEDED SURVEY CONTROL
 JV5997
 JV5997  NAD 83(1986)-  39 06 57.50009(N)    076 57 40.70813(W) AD(       ) 2
 JV5997  NAD 27      -  39 06 57.11104(N)    076 57 41.79636(W) AD(       ) 2
 JV5997  NGVD 29 (07/19/86)  148.8    (m)          488.     (f) VERT ANG       
 JV5997
 JV5997.Superseded values are not recommended for survey control.
 JV5997
 JV5997.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5997.See file dsdata.pdf to determine how the superseded data were derived.
 JV5997
 JV5997_MARKER: I = METAL ROD
 JV5997_SETTING: 0 = UNSPECIFIED SETTING
 JV5997_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5997
 JV5997  HISTORY     - Date     Condition        Report By
 JV5997  HISTORY     - 1969     MONUMENTED       WSSC
 JV5997
 JV5997                          STATION DESCRIPTION
 JV5997
 JV5997'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5997'THE STATION IS ABOUT 1/2 MILE EAST OF SPENCERVILLE AND 1-1/2
 JV5997'MILES WEST OF BURTONSVILLE.
 JV5997'
 JV5997'THE STATION IS ON THE EAST SIDE OF A FARM ROAD ABOUT 25 FEET
 JV5997'NORTH OF ROUTE 198 (SPENCERVILLE ROAD) AND ABOUT 225 FEET EAST
 JV5997'OF PEACH ORCHARD ROAD.
 JV5997'
 JV5997'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5997'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 53.63 FEET NORTH
 JV5997'OF C AND P POLE 62, 34.20 FEET EAST OF A POWER LINE POLE,
 JV5997'9.41 FEET SOUTHWEST OF POLE 62 AND 25.03 FEET WEST OF A NAIL
 JV5997'IN THE TOP OF A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5988 ***********************************************************************
 JV5988  DESIGNATION -  17083 WSSC 1969
 JV5988  PID         -  JV5988
 JV5988  STATE/COUNTY-  MD/MONTGOMERY
 JV5988  COUNTRY     -  US
 JV5988  USGS QUAD   -  BELTSVILLE (2016)
 JV5988
 JV5988                         *CURRENT SURVEY CONTROL
 JV5988  ______________________________________________________________________
 JV5988* NAD 83(1991) POSITION- 39 05 43.40964(N) 076 56 16.41101(W)   ADJUSTED
 JV5988* NAVD 88 ORTHO HEIGHT -   134.2   (meters)      440.    (feet) VERTCON3
 JV5988  ______________________________________________________________________
 JV5988  GEOID HEIGHT    -        -32.064 (meters)                     GEOID18
 JV5988  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 JV5988  HORZ ORDER      -  SECOND
 JV5988
 JV5988.The horizontal coordinates were established by classical geodetic methods
 JV5988.and adjusted by the National Geodetic Survey in January 1992.
 JV5988
 JV5988.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5988.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5988
 JV5988.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5988.GEOID18 height accuracy estimate available here.
 JV5988
 JV5988.Click photographs - Photos may exist for this station.
 JV5988
 JV5988.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5988
 JV5988. The following values were computed from the NAD 83(1991) position.
 JV5988
 JV5988;                    North         East     Units Scale Factor Converg.
 JV5988;SPC MD       -   158,597.581   405,372.735   MT  0.99995717   +0 02 20.3
 JV5988;SPC MD       -   520,332.23  1,329,960.38   sFT  0.99995717   +0 02 20.3
 JV5988;UTM  18      - 4,329,149.978   332,413.479   MT  0.99994583   -1 13 20.4
 JV5988
 JV5988!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5988!SPC MD       -   0.99998398  x   0.99995717  =   0.99994115
 JV5988!UTM  18      -   0.99998398  x   0.99994583  =   0.99992981
 JV5988
 JV5988:                Primary Azimuth Mark                     Grid Az
 JV5988:SPC MD       -  CASTLE                                   199 09 28.6
 JV5988:UTM  18      -  CASTLE                                   200 25 09.3
 JV5988
 JV5988_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3241329149(NAD 83)
 JV5988
 JV5988|---------------------------------------------------------------------|
 JV5988| PID    Reference Object                     Distance      Geod. Az  |
 JV5988|                                                           dddmmss.s |
 JV5988| JV5984 17084 WSSC 1969                     410.097 METERS 1135821.3 |
 JV5988| JV5957 CASTLE                              APPROX. 1.1 KM 1991148.9 |
 JV5988|---------------------------------------------------------------------|
 JV5988
 JV5988                          SUPERSEDED SURVEY CONTROL
 JV5988
 JV5988  NAD 83(1986)-  39 05 43.40875(N)    076 56 16.42109(W) AD(       ) 2
 JV5988  NAD 27      -  39 05 43.01816(N)    076 56 17.51254(W) AD(       ) 2
 JV5988  NGVD 29 (07/19/86)  134.4    (m)          441.     (f) VERT ANG       
 JV5988
 JV5988.Superseded values are not recommended for survey control.
 JV5988
 JV5988.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5988.See file dsdata.pdf to determine how the superseded data were derived.
 JV5988
 JV5988_MARKER: I = METAL ROD
 JV5988_SETTING: 0 = UNSPECIFIED SETTING
 JV5988_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5988
 JV5988  HISTORY     - Date     Condition        Report By
 JV5988  HISTORY     - 1969     MONUMENTED       WSSC
 JV5988
 JV5988                          STATION DESCRIPTION
 JV5988
 JV5988'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5988'THE STATION IS ABOUT 1 MILE SOUTH OF BURTONSVILLE AND 1-1/2
 JV5988'MILES NORTHEAST OF FAIRLAND HEIGHTS.
 JV5988'
 JV5988'THE STATION IS ON THE SOUTHWEST CORNER OF ROUTE 29 AND
 JV5988'GREENCASTLE ROAD.
 JV5988'
 JV5988'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5988'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 34.64 FEET
 JV5988'NORTHWEST OF THE CENTERLINE OF A CONCRETE MONUMENT, 38.60 FEET
 JV5988'SOUTHWEST OF A TELEPHONE MARKER AND 6.66 FEET NORTHEAST OF
 JV5988'A GUARD RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5984 ***********************************************************************
 JV5984  DESIGNATION -  17084 WSSC 1969
 JV5984  PID         -  JV5984
 JV5984  STATE/COUNTY-  MD/MONTGOMERY
 JV5984  COUNTRY     -  US
 JV5984  USGS QUAD   -  BELTSVILLE (2016)
 JV5984
 JV5984                         *CURRENT SURVEY CONTROL
 JV5984  ______________________________________________________________________
 JV5984* NAD 83(1991) POSITION- 39 05 38.00623(N) 076 56 00.81778(W)   ADJUSTED
 JV5984* NAVD 88 ORTHO HEIGHT -   128.6   (meters)      422.    (feet) VERTCON3
 JV5984  ______________________________________________________________________
 JV5984  GEOID HEIGHT    -        -32.072 (meters)                     GEOID18
 JV5984  LAPLACE CORR    -         -3.51  (seconds)                    DEFLEC18
 JV5984  HORZ ORDER      -  SECOND
 JV5984
 JV5984.The horizontal coordinates were established by classical geodetic methods
 JV5984.and adjusted by the National Geodetic Survey in January 1992.
 JV5984
 JV5984.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5984.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5984
 JV5984.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5984.GEOID18 height accuracy estimate available here.
 JV5984
 JV5984.Click photographs - Photos may exist for this station.
 JV5984
 JV5984.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5984
 JV5984. The following values were computed from the NAD 83(1991) position.
 JV5984
 JV5984;                    North         East     Units Scale Factor Converg.
 JV5984;SPC MD       -   158,431.221   405,747.554   MT  0.99995707   +0 02 30.1
 JV5984;SPC MD       -   519,786.43  1,331,190.10   sFT  0.99995707   +0 02 30.1
 JV5984;UTM  18      - 4,328,975.410   332,784.540   MT  0.99994430   -1 13 10.5
 JV5984
 JV5984!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5984!SPC MD       -   0.99998486  x   0.99995707  =   0.99994193
 JV5984!UTM  18      -   0.99998486  x   0.99994430  =   0.99992916
 JV5984
 JV5984_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3278428975(NAD 83)
 JV5984
 JV5984                          SUPERSEDED SURVEY CONTROL
 JV5984
 JV5984  NAD 83(1986)-  39 05 38.00531(N)    076 56 00.82787(W) AD(       ) 2
 JV5984  NAD 27      -  39 05 37.61463(N)    076 56 01.91981(W) AD(       ) 2
 JV5984  NGVD 29 (07/19/86)  128.8    (m)          423.     (f) VERT ANG       
 JV5984
 JV5984.Superseded values are not recommended for survey control.
 JV5984
 JV5984.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5984.See file dsdata.pdf to determine how the superseded data were derived.
 JV5984
 JV5984_MARKER: I = METAL ROD
 JV5984_SETTING: 0 = UNSPECIFIED SETTING
 JV5984_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5984
 JV5984  HISTORY     - Date     Condition        Report By
 JV5984  HISTORY     - 1969     MONUMENTED       WSSC
 JV5984
 JV5984                          STATION DESCRIPTION
 JV5984
 JV5984'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5984'THE STATION IS ABOUT 1 MILE SOUTH OF BURTONSVILLE AND 1-1/2
 JV5984'MILES NORTHEAST OF FAIRLAND HEIGHTS.
 JV5984'
 JV5984'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 29 AND
 JV5984'GREENCASTLE ROAD, GO EAST ON GREENCASTLE ROAD FOR .25 MILE TO
 JV5984'THE STATION ON THE LEFT.
 JV5984'
 JV5984'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5984'CENTER AND IS 3 INCHES BELOW THE SURFACE.  IT IS 95.53 FEET
 JV5984'NORTHWEST OF G AND E POLE 160694, 16.0 FEET SOUTHEAST OF A
 JV5984'CORNER FENCE POST, 31.81 FEET SOUTHWEST OF THE SOUTHWEST
 JV5984'CORNER OF A WHITE FRAME HOUSE AND 10.22 FEET NORTH OF THE NORTH
 JV5984'EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5977 ***********************************************************************
 JV5977  DESIGNATION -  17085 WSSC 1969
 JV5977  PID         -  JV5977
 JV5977  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5977  COUNTRY     -  US
 JV5977  USGS QUAD   -  BELTSVILLE (2016)
 JV5977
 JV5977                         *CURRENT SURVEY CONTROL
 JV5977  ______________________________________________________________________
 JV5977* NAD 83(1991) POSITION- 39 05 31.89815(N) 076 54 51.76595(W)   ADJUSTED
 JV5977* NAVD 88 ORTHO HEIGHT -   123.0   (meters)      404.    (feet) VERTCON3
 JV5977  ______________________________________________________________________
 JV5977  GEOID HEIGHT    -        -32.109 (meters)                     GEOID18
 JV5977  LAPLACE CORR    -         -3.82  (seconds)                    DEFLEC18
 JV5977  HORZ ORDER      -  SECOND
 JV5977
 JV5977.The horizontal coordinates were established by classical geodetic methods
 JV5977.and adjusted by the National Geodetic Survey in January 1992.
 JV5977
 JV5977.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5977.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5977
 JV5977.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5977.GEOID18 height accuracy estimate available here.
 JV5977
 JV5977.Click photographs - Photos may exist for this station.
 JV5977
 JV5977.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5977
 JV5977. The following values were computed from the NAD 83(1991) position.
 JV5977
 JV5977;                    North         East     Units Scale Factor Converg.
 JV5977;SPC MD       -   158,244.249   407,407.047   MT  0.99995696   +0 03 13.5
 JV5977;SPC MD       -   519,173.01  1,336,634.62   sFT  0.99995696   +0 03 13.5
 JV5977;UTM  18      - 4,328,751.961   334,439.489   MT  0.99993752   -1 12 26.7
 JV5977
 JV5977!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5977!SPC MD       -   0.99998574  x   0.99995696  =   0.99994270
 JV5977!UTM  18      -   0.99998574  x   0.99993752  =   0.99992326
 JV5977
 JV5977:                Primary Azimuth Mark                     Grid Az
 JV5977:SPC MD       -  CASTLE                                   253 52 54.5
 JV5977:UTM  18      -  CASTLE                                   255 08 34.7
 JV5977
 JV5977_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3443928751(NAD 83)
 JV5977
 JV5977|---------------------------------------------------------------------|
 JV5977| PID    Reference Object                     Distance      Geod. Az  |
 JV5977|                                                           dddmmss.s |
 JV5977| JV5957 CASTLE                              APPROX. 2.5 KM 2535608.0 |
 JV5977|---------------------------------------------------------------------|
 JV5977
 JV5977                          SUPERSEDED SURVEY CONTROL
 JV5977
 JV5977  NAD 83(1986)-  39 05 31.89714(N)    076 54 51.77603(W) AD(       ) 2
 JV5977  NAD 27      -  39 05 31.50628(N)    076 54 52.87018(W) AD(       ) 2
 JV5977  NGVD 29 (07/19/86)  123.2    (m)          404.     (f) VERT ANG       
 JV5977
 JV5977.Superseded values are not recommended for survey control.
 JV5977
 JV5977.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5977.See file dsdata.pdf to determine how the superseded data were derived.
 JV5977
 JV5977_MARKER: I = METAL ROD
 JV5977_SETTING: 0 = UNSPECIFIED SETTING
 JV5977_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5977
 JV5977  HISTORY     - Date     Condition        Report By
 JV5977  HISTORY     - 1969     MONUMENTED       WSSC
 JV5977
 JV5977                          STATION DESCRIPTION
 JV5977
 JV5977'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5977'THE STATION IS ABOUT 1 MILE SOUTH OF BURTONSVILLE AND 2-1/2
 JV5977'MILES NORTHEAST OF CALVERTON.
 JV5977'
 JV5977'TO REACH THE STATION FROM THE INTERSECTION OF GUNPOWDER ROAD
 JV5977'AND VAN DUSEN ROAD, GO NORTH ON GUNPOWDER ROAD FOR .85 MILES
 JV5977'TO THE STATION ON THE LEFT.
 JV5977'
 JV5977'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5977'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 9.29 FEET
 JV5977'SOUTHWEST OF C AND P POLE NO. P-20, 96.90 FEET NORTHWEST OF
 JV5977'G AND E POLE NO. 319614, 78.80 FEET SOUTHEAST OF A 30-INCH OAK
 JV5977'AND 17.8 FEET WEST OF THE WEST EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5978 ***********************************************************************
 JV5978  DESIGNATION -  17086 WSSC 1969
 JV5978  PID         -  JV5978
 JV5978  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5978  COUNTRY     -  US
 JV5978  USGS QUAD   -  BELTSVILLE (2016)
 JV5978
 JV5978                         *CURRENT SURVEY CONTROL
 JV5978  ______________________________________________________________________
 JV5978* NAD 83(1991) POSITION- 39 05 09.48085(N) 076 55 00.60728(W)   ADJUSTED
 JV5978* NAVD 88 ORTHO HEIGHT -   111.7   (meters)      366.    (feet) VERTCON3
 JV5978  ______________________________________________________________________
 JV5978  GEOID HEIGHT    -        -32.108 (meters)                     GEOID18
 JV5978  LAPLACE CORR    -         -3.76  (seconds)                    DEFLEC18
 JV5978  HORZ ORDER      -  SECOND
 JV5978
 JV5978.The horizontal coordinates were established by classical geodetic methods
 JV5978.and adjusted by the National Geodetic Survey in January 1992.
 JV5978
 JV5978.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5978.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5978
 JV5978.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5978.GEOID18 height accuracy estimate available here.
 JV5978
 JV5978.Click photographs - Photos may exist for this station.
 JV5978
 JV5978.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5978
 JV5978. The following values were computed from the NAD 83(1991) position.
 JV5978
 JV5978;                    North         East     Units Scale Factor Converg.
 JV5978;SPC MD       -   157,552.776   407,195.215   MT  0.99995656   +0 03 07.9
 JV5978;SPC MD       -   516,904.40  1,335,939.63   sFT  0.99995656   +0 03 07.9
 JV5978;UTM  18      - 4,328,065.330   334,212.494   MT  0.99993844   -1 12 31.7
 JV5978
 JV5978!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5978!SPC MD       -   0.99998751  x   0.99995656  =   0.99994407
 JV5978!UTM  18      -   0.99998751  x   0.99993844  =   0.99992595
 JV5978
 JV5978_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3421228065(NAD 83)
 JV5978
 JV5978                          SUPERSEDED SURVEY CONTROL
 JV5978
 JV5978  NAD 83(1986)-  39 05 09.47985(N)    076 55 00.61742(W) AD(       ) 2
 JV5978  NAD 27      -  39 05 09.08866(N)    076 55 01.71133(W) AD(       ) 2
 JV5978  NGVD 29 (07/19/86)  111.9    (m)          367.     (f) VERT ANG       
 JV5978
 JV5978.Superseded values are not recommended for survey control.
 JV5978
 JV5978.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5978.See file dsdata.pdf to determine how the superseded data were derived.
 JV5978
 JV5978_MARKER: I = METAL ROD
 JV5978_SETTING: 0 = UNSPECIFIED SETTING
 JV5978_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5978
 JV5978  HISTORY     - Date     Condition        Report By
 JV5978  HISTORY     - 1969     MONUMENTED       WSSC
 JV5978
 JV5978                          STATION DESCRIPTION
 JV5978
 JV5978'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5978'THE STATION IS ABOUT 1 MILE SOUTH OF BURTONSVILLE AND 2-1/2
 JV5978'MILES NORTHEAST OF CALVERTON.
 JV5978'
 JV5978'TO REACH THE STATION FROM THE INTERSECTION OF GUNPOWDER ROAD
 JV5978'AND VAN DUSEN ROAD, GO NORTH ON GUNPOWDER ROAD FOR .4 MILE TO
 JV5978'THE ENTRANCE TO THE GUNPOWDER COUNTRY CLUB AND THE STATION IS
 JV5978'ON THE LEFT.
 JV5978'
 JV5978'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5978'CENTER AND IS 1 INCH BELOW THE SURFACE.  IT IS 73.03 FEET
 JV5978'NORTHWEST OF C AND P POLE 32, 63.00 FEET SOUTHEAST OF A
 JV5978'10-INCH LOCUST, 16.45 FEET SOUTH OF THE CENTER OF A MANHOLE
 JV5978'AND 14.7 FEET WEST OF THE WEST EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4443 ***********************************************************************
 JV4443  DESIGNATION -  17087 WSSC 1969
 JV4443  PID         -  JV4443
 JV4443  STATE/COUNTY-  MD/MONTGOMERY
 JV4443  COUNTRY     -  US
 JV4443  USGS QUAD   -  GAITHERSBURG (2016)
 JV4443
 JV4443                         *CURRENT SURVEY CONTROL
 JV4443  ______________________________________________________________________
 JV4443* NAD 83(1993) POSITION- 39 13 58.75544(N) 077 12 18.03768(W)   ADJUSTED
 JV4443* NAVD 88 ORTHO HEIGHT -   187.3   (meters)      615.    (feet) VERTCON3
 JV4443  ______________________________________________________________________
 JV4443  GEOID HEIGHT    -        -31.810 (meters)                     GEOID18
 JV4443  LAPLACE CORR    -          1.49  (seconds)                    DEFLEC18
 JV4443  HORZ ORDER      -  SECOND
 JV4443
 JV4443.The horizontal coordinates were established by classical geodetic methods
 JV4443.and adjusted by the National Geodetic Survey in November 1994.
 JV4443
 JV4443.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4443.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4443
 JV4443.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4443.GEOID18 height accuracy estimate available here.
 JV4443
 JV4443.Click photographs - Photos may exist for this station.
 JV4443
 JV4443.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4443
 JV4443. The following values were computed from the NAD 83(1993) position.
 JV4443
 JV4443;                    North         East     Units Scale Factor Converg.
 JV4443;SPC MD       -   173,890.783   382,299.630   MT  0.99996923   -0 07 43.2
 JV4443;SPC MD       -   570,506.68  1,254,261.37   sFT  0.99996923   -0 07 43.2
 JV4443;UTM  18      - 4,344,948.844   309,682.547   MT  1.00004600   -1 23 42.1
 JV4443
 JV4443!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4443!SPC MD       -   0.99997561  x   0.99996923  =   0.99994484
 JV4443!UTM  18      -   0.99997561  x   1.00004600  =   1.00002161
 JV4443
 JV4443:                Primary Azimuth Mark                     Grid Az
 JV4443:SPC MD       -  CEDAR HEIGHTS                            318 50 53.5
 JV4443:UTM  18      -  CEDAR HEIGHTS                            320 06 52.4
 JV4443
 JV4443_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0968244948(NAD 83)
 JV4443
 JV4443|---------------------------------------------------------------------|
 JV4443| PID    Reference Object                     Distance      Geod. Az  |
 JV4443|                                                           dddmmss.s |
 JV4443| JV4444 17088 WSSC 1969                     293.696 METERS 19202     |
 JV4443| JV4220 CEDAR HEIGHTS                       APPROX. 3.0 KM 3184310.3 |
 JV4443|---------------------------------------------------------------------|
 JV4443
 JV4443                          SUPERSEDED SURVEY CONTROL
 JV4443
 JV4443  NAD 83(1991)-  39 13 58.75506(N)    077 12 18.03750(W) AD(       ) 2
 JV4443  NAD 83(1986)-  39 13 58.75516(N)    077 12 18.04796(W) AD(       ) 2
 JV4443  NAD 27      -  39 13 58.37431(N)    077 12 19.10896(W) AD(       ) 2
 JV4443  NGVD 29 (07/19/86)  187.5    (m)          615.     (f) VERT ANG       
 JV4443
 JV4443.Superseded values are not recommended for survey control.
 JV4443
 JV4443.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4443.See file dsdata.pdf to determine how the superseded data were derived.
 JV4443
 JV4443_MARKER: I = METAL ROD
 JV4443_SETTING: 0 = UNSPECIFIED SETTING
 JV4443_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4443
 JV4443  HISTORY     - Date     Condition        Report By
 JV4443  HISTORY     - 1969     MONUMENTED       WSSC
 JV4443
 JV4443                          STATION DESCRIPTION
 JV4443
 JV4443'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4443'THE STATION IS ABOUT 2 MILES SOUTHEAST OF CEDAR GROVE AND 2
 JV4443'MILES NORTHWEST OF GOSHEN.
 JV4443'
 JV4443'THE STATION IS LOCATED ON THE WEST SIDE OF WATKINS ROAD
 JV4443'ABOUT 150 FEET NORTH OF WILDCAT ROAD.
 JV4443'
 JV4443'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4443'CENTER AND IS 1-INCH BELOW THE SURFACE.  IT IS 18.94 FEET EAST
 JV4443'OF G AND E POLE NO. 8751, 91.90 FEET NORTHEAST OF THE
 JV4443'NORTHEAST CORNER OF A HOUSE, AND 74.84 FEET NORTHWEST OF
 JV4443'POLE NO. 50.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4444 ***********************************************************************
 JV4444  DESIGNATION -  17088 WSSC 1969
 JV4444  PID         -  JV4444
 JV4444  STATE/COUNTY-  MD/MONTGOMERY
 JV4444  COUNTRY     -  US
 JV4444  USGS QUAD   -  GAITHERSBURG (2016)
 JV4444
 JV4444                         *CURRENT SURVEY CONTROL
 JV4444  ______________________________________________________________________
 JV4444* NAD 83(1993) POSITION- 39 13 49.44098(N) 077 12 20.58965(W)   ADJUSTED
 JV4444* NAVD 88 ORTHO HEIGHT -   190.7   (meters)      626.    (feet) VERTCON3
 JV4444  ______________________________________________________________________
 JV4444  GEOID HEIGHT    -        -31.809 (meters)                     GEOID18
 JV4444  LAPLACE CORR    -          1.49  (seconds)                    DEFLEC18
 JV4444  HORZ ORDER      -  SECOND
 JV4444
 JV4444.The horizontal coordinates were established by classical geodetic methods
 JV4444.and adjusted by the National Geodetic Survey in November 1994.
 JV4444
 JV4444.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4444.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4444
 JV4444.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4444.GEOID18 height accuracy estimate available here.
 JV4444
 JV4444.Click photographs - Photos may exist for this station.
 JV4444
 JV4444.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4444
 JV4444. The following values were computed from the NAD 83(1993) position.
 JV4444
 JV4444;                    North         East     Units Scale Factor Converg.
 JV4444;SPC MD       -   173,603.683   382,237.779   MT  0.99996895   -0 07 44.8
 JV4444;SPC MD       -   569,564.75  1,254,058.45   sFT  0.99996895   -0 07 44.8
 JV4444;UTM  18      - 4,344,663.159   309,614.361   MT  1.00004632   -1 23 43.5
 JV4444
 JV4444!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4444!SPC MD       -   0.99997507  x   0.99996895  =   0.99994402
 JV4444!UTM  18      -   0.99997507  x   1.00004632  =   1.00002139
 JV4444
 JV4444:                Primary Azimuth Mark                     Grid Az
 JV4444:SPC MD       -  CEDAR HEIGHTS WSSC TANK                  323 15 46.2
 JV4444:UTM  18      -  CEDAR HEIGHTS WSSC TANK                  324 31 44.9
 JV4444
 JV4444_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0961444663(NAD 83)
 JV4444
 JV4444|---------------------------------------------------------------------|
 JV4444| PID    Reference Object                     Distance      Geod. Az  |
 JV4444|                                                           dddmmss.s |
 JV4444| JV4443 17087 WSSC 1969                     293.696 METERS 01202     |
 JV4444| JV4221 CEDAR HEIGHTS WSSC TANK             APPROX. 3.2 KM 3230801.4 |
 JV4444|---------------------------------------------------------------------|
 JV4444
 JV4444                          SUPERSEDED SURVEY CONTROL
 JV4444
 JV4444  NAD 83(1991)-  39 13 49.44060(N)    077 12 20.58945(W) AD(       ) 2
 JV4444  NAD 83(1986)-  39 13 49.44063(N)    077 12 20.59991(W) AD(       ) 2
 JV4444  NAD 27      -  39 13 49.05986(N)    077 12 21.66093(W) AD(       ) 2
 JV4444  NGVD 29 (07/19/86)  190.9    (m)          626.     (f) VERT ANG       
 JV4444
 JV4444.Superseded values are not recommended for survey control.
 JV4444
 JV4444.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4444.See file dsdata.pdf to determine how the superseded data were derived.
 JV4444
 JV4444_MARKER: I = METAL ROD
 JV4444_SETTING: 0 = UNSPECIFIED SETTING
 JV4444_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4444
 JV4444  HISTORY     - Date     Condition        Report By
 JV4444  HISTORY     - 1969     MONUMENTED       WSSC
 JV4444
 JV4444                          STATION DESCRIPTION
 JV4444
 JV4444'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4444'THE STATION IS ABOUT 2 MILES SOUTHEAST OF CEDAR GROVE AND 2
 JV4444'MILES NORTHWEST OF GOSHEN.
 JV4444'
 JV4444'THE STATION IS LOCATED ON THE SOUTHWEST SIDE OF WILDCAT ROAD
 JV4444'ABOUT 900 FEET SOUTHWEST OF WATKINS ROAD.
 JV4444'
 JV4444'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4444'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 31.24 FEET
 JV4444'SOUTH OF A POWER POLE, 24.89 FEET WEST OF A FENCE POST, AND
 JV4444'107.20 FEET NORTHEAST OF THE NORTHWEST CORNER OF A BRICK HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4318 ***********************************************************************
 JV4318  DESIGNATION -  17089 WSSC 1969
 JV4318  PID         -  JV4318
 JV4318  STATE/COUNTY-  MD/MONTGOMERY
 JV4318  COUNTRY     -  US
 JV4318  USGS QUAD   -  KENSINGTON (2016)
 JV4318
 JV4318                         *CURRENT SURVEY CONTROL
 JV4318  ______________________________________________________________________
 JV4318* NAD 83(1991) POSITION- 39 00 57.32158(N) 077 00 19.84628(W)   ADJUSTED
 JV4318* NAVD 88 ORTHO HEIGHT -   102.8   (meters)      337.    (feet) VERTCON3
 JV4318  ______________________________________________________________________
 JV4318  GEOID HEIGHT    -        -31.991 (meters)                     GEOID18
 JV4318  LAPLACE CORR    -         -3.06  (seconds)                    DEFLEC18
 JV4318  HORZ ORDER      -  SECOND
 JV4318
 JV4318.The horizontal coordinates were established by classical geodetic methods
 JV4318.and adjusted by the National Geodetic Survey in January 1992.
 JV4318
 JV4318.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4318.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4318
 JV4318.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4318.GEOID18 height accuracy estimate available here.
 JV4318
 JV4318.Click photographs - Photos may exist for this station.
 JV4318
 JV4318.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4318
 JV4318. The following values were computed from the NAD 83(1991) position.
 JV4318
 JV4318;                    North         East     Units Scale Factor Converg.
 JV4318;SPC MD       -   149,773.803   399,522.571   MT  0.99995283   -0 00 12.5
 JV4318;SPC MD       -   491,382.89  1,310,766.97   sFT  0.99995283   -0 00 12.5
 JV4318;UTM  18      - 4,320,456.983   326,370.621   MT  0.99997123   -1 15 46.3
 JV4318
 JV4318!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4318!SPC MD       -   0.99998889  x   0.99995283  =   0.99994172
 JV4318!UTM  18      -   0.99998889  x   0.99997123  =   0.99996012
 JV4318
 JV4318:                Primary Azimuth Mark                     Grid Az
 JV4318:SPC MD       -  CHATEAU                                  087 57 07.8
 JV4318:UTM  18      -  CHATEAU                                  089 12 41.6
 JV4318
 JV4318_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2637020456(NAD 83)
 JV4318
 JV4318|---------------------------------------------------------------------|
 JV4318| PID    Reference Object                     Distance      Geod. Az  |
 JV4318|                                                           dddmmss.s |
 JV4318| JV5953 CHATEAU                             APPROX. 2.7 KM 0875655.3 |
 JV4318| JV5952 HILLANDALE GOOD SHEPHERD CH         APPROX. 2.4 KM 0943343.5 |
 JV4318|---------------------------------------------------------------------|
 JV4318
 JV4318                          SUPERSEDED SURVEY CONTROL
 JV4318
 JV4318  NAD 83(1986)-  39 00 57.32098(N)    077 00 19.85688(W) AD(       ) 2
 JV4318  NAD 27      -  39 00 56.92675(N)    077 00 20.94035(W) AD(       ) 2
 JV4318  NGVD 29 (07/19/86)  103.0    (m)          338.     (f) VERT ANG       
 JV4318
 JV4318.Superseded values are not recommended for survey control.
 JV4318
 JV4318.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4318.See file dsdata.pdf to determine how the superseded data were derived.
 JV4318
 JV4318_MARKER: I = METAL ROD
 JV4318_SETTING: 0 = UNSPECIFIED SETTING
 JV4318_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4318
 JV4318  HISTORY     - Date     Condition        Report By
 JV4318  HISTORY     - 1969     MONUMENTED       WSSC
 JV4318
 JV4318                          STATION DESCRIPTION
 JV4318
 JV4318'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4318'THE STATION IS ABOUT 2 MILES NORTHEAST OF SILVER SPRING AND
 JV4318'IS 3 MILES SOUTHEAST OF WHEATON.
 JV4318'
 JV4318'THE STATION IS LOCATED IN THE GRASS ISLAND IN THE CENTERLINE
 JV4318'OF UNIVERSITY BOULEVARD (ROUTE 193) ABOUT 150 FEET NORTHWEST OF
 JV4318'ROUTE 495.
 JV4318'
 JV4318'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4318'CENTER AND IS 2 INCHES BELOW THE GROUND.  IT IS 54.65 FEET
 JV4318'SOUTHWEST OF PEPCO POLE 748039, 47.45 NORTHWEST OF THE CENTER
 JV4318'OF A S.R.C. MANHOLE AND 6.1 FEET NORTHEAST OF THE
 JV4318'SOUTHBOUND LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4319 ***********************************************************************
 JV4319  DESIGNATION -  17090 WSSC 1969
 JV4319  PID         -  JV4319
 JV4319  STATE/COUNTY-  MD/MONTGOMERY
 JV4319  COUNTRY     -  US
 JV4319  USGS QUAD   -  KENSINGTON (2016)
 JV4319
 JV4319                         *CURRENT SURVEY CONTROL
 JV4319  ______________________________________________________________________
 JV4319* NAD 83(1991) POSITION- 39 00 59.63256(N) 077 00 57.32267(W)   ADJUSTED
 JV4319* NAVD 88 ORTHO HEIGHT -   105.5   (meters)      346.    (feet) VERTCON3
 JV4319  ______________________________________________________________________
 JV4319  GEOID HEIGHT    -        -31.975 (meters)                     GEOID18
 JV4319  LAPLACE CORR    -         -3.03  (seconds)                    DEFLEC18
 JV4319  HORZ ORDER      -  SECOND
 JV4319
 JV4319.The horizontal coordinates were established by classical geodetic methods
 JV4319.and adjusted by the National Geodetic Survey in January 1992.
 JV4319
 JV4319.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4319.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4319
 JV4319.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4319.GEOID18 height accuracy estimate available here.
 JV4319
 JV4319.Click photographs - Photos may exist for this station.
 JV4319
 JV4319.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4319
 JV4319. The following values were computed from the NAD 83(1991) position.
 JV4319
 JV4319;                    North         East     Units Scale Factor Converg.
 JV4319;SPC MD       -   149,845.171   398,621.038   MT  0.99995286   -0 00 36.0
 JV4319;SPC MD       -   491,617.03  1,307,809.19   sFT  0.99995286   -0 00 36.0
 JV4319;UTM  18      - 4,320,548.151   325,470.856   MT  0.99997508   -1 16 10.0
 JV4319
 JV4319!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4319!SPC MD       -   0.99998847  x   0.99995286  =   0.99994133
 JV4319!UTM  18      -   0.99998847  x   0.99997508  =   0.99996355
 JV4319
 JV4319:                Primary Azimuth Mark                     Grid Az
 JV4319:SPC MD       -  17089 WSSC 1969                          094 31 34.5
 JV4319:UTM  18      -  17089 WSSC 1969                          095 47 08.5
 JV4319
 JV4319_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2547020548(NAD 83)
 JV4319
 JV4319|---------------------------------------------------------------------|
 JV4319| PID    Reference Object                     Distance      Geod. Az  |
 JV4319|                                                           dddmmss.s |
 JV4319| JV4291 SILVER SPR METH CH SPIRE            449.274 METERS 0405522.4 |
 JV4319| JV4318 17089 WSSC 1969                     APPROX. 0.9 KM 0943058.5 |
 JV4319| HV4485 SILVER SPR RAD STA WGAY FM MST      APPROX. 3.0 KM 1972051.9 |
 JV4319| JV4289 SILVER SPR RAD STA WQMR MAST        APPROX. 1.2 KM 2574137.3 |
 JV4319|---------------------------------------------------------------------|
 JV4319
 JV4319                          SUPERSEDED SURVEY CONTROL
 JV4319
 JV4319  NAD 83(1986)-  39 00 59.63199(N)    077 00 57.33324(W) AD(       ) 2
 JV4319  NAD 27      -  39 00 59.23776(N)    077 00 58.41572(W) AD(       ) 2
 JV4319  NGVD 29 (07/19/86)  105.7    (m)          347.     (f) VERT ANG       
 JV4319
 JV4319.Superseded values are not recommended for survey control.
 JV4319
 JV4319.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4319.See file dsdata.pdf to determine how the superseded data were derived.
 JV4319
 JV4319_MARKER: I = METAL ROD
 JV4319_SETTING: 0 = UNSPECIFIED SETTING
 JV4319_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4319
 JV4319  HISTORY     - Date     Condition        Report By
 JV4319  HISTORY     - 1969     MONUMENTED       WSSC
 JV4319
 JV4319                          STATION DESCRIPTION
 JV4319
 JV4319'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4319'THE STATION IS ABOUT 2 MILES NORTHEAST OF SILVER SPRING AND
 JV4319'3 MILES SOUTHEAST OF WHEATON.
 JV4319'
 JV4319'THE STATION IS LOCATED ON THE NORTH SIDE OF COLESVILLE ROAD
 JV4319'(ROUTE 29) ABOUT 150 FEET WEST OF ROUTE 495.
 JV4319'
 JV4319'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4319'CENNTER AND IS 2 INCHES BELOW THE GROUND.  IT IS 98.70 FEET
 JV4319'NORTHWEST OF THE NORTHWEST CORNER OF A CONCRETE SLAB AND 2.1
 JV4319'FEET NORTHEAST OF THE NORTHEAST EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4479 ***********************************************************************
 JV4479  DESIGNATION -  17091 WSSC 1969
 JV4479  PID         -  JV4479
 JV4479  STATE/COUNTY-  MD/MONTGOMERY
 JV4479  COUNTRY     -  US
 JV4479  USGS QUAD   -  GERMANTOWN (2016)
 JV4479
 JV4479                         *CURRENT SURVEY CONTROL
 JV4479  ______________________________________________________________________
 JV4479* NAD 83(1993) POSITION- 39 13 25.91535(N) 077 20 43.54593(W)   ADJUSTED
 JV4479* NAVD 88 ORTHO HEIGHT -   178.3   (meters)      585.    (feet) VERTCON3
 JV4479  ______________________________________________________________________
 JV4479  GEOID HEIGHT    -        -32.056 (meters)                     GEOID18
 JV4479  LAPLACE CORR    -          5.39  (seconds)                    DEFLEC18
 JV4479  HORZ ORDER      -  SECOND
 JV4479
 JV4479.The horizontal coordinates were established by classical geodetic methods
 JV4479.and adjusted by the National Geodetic Survey in November 1994.
 JV4479
 JV4479.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4479.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4479
 JV4479.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4479.GEOID18 height accuracy estimate available here.
 JV4479
 JV4479.Click photographs - Photos may exist for this station.
 JV4479
 JV4479.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4479
 JV4479. The following values were computed from the NAD 83(1993) position.
 JV4479
 JV4479;                    North         East     Units Scale Factor Converg.
 JV4479;SPC MD       -   172,914.622   370,172.231   MT  0.99996826   -0 13 00.5
 JV4479;SPC MD       -   567,304.06  1,214,473.39   sFT  0.99996826   -0 13 00.5
 JV4479;UTM  18      - 4,344,240.918   297,535.242   MT  1.00010475   -1 29 01.1
 JV4479
 JV4479!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4479!SPC MD       -   0.99997705  x   0.99996826  =   0.99994532
 JV4479!UTM  18      -   0.99997705  x   1.00010475  =   1.00008180
 JV4479
 JV4479:                Primary Azimuth Mark                     Grid Az
 JV4479:SPC MD       -  COMUS RESET                              333 50 04.0
 JV4479:UTM  18      -  COMUS RESET                              335 06 04.6
 JV4479
 JV4479_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9753544240(NAD 83)
 JV4479
 JV4479|---------------------------------------------------------------------|
 JV4479| PID    Reference Object                     Distance      Geod. Az  |
 JV4479|                                                           dddmmss.s |
 JV4479| JV4478 17092 WSSC 1969                     APPROX. 0.6 KM 1451505.4 |
 JV4479| JV4462 COMUS RESET                         APPROX. 2.1 KM 3333703.5 |
 JV4479|---------------------------------------------------------------------|
 JV4479
 JV4479                          SUPERSEDED SURVEY CONTROL
 JV4479
 JV4479  NAD 83(1991)-  39 13 25.91502(N)    077 20 43.54586(W) AD(       ) 2
 JV4479  NAD 83(1986)-  39 13 25.91502(N)    077 20 43.55645(W) AD(       ) 2
 JV4479  NAD 27      -  39 13 25.53402(N)    077 20 44.60089(W) AD(       ) 2
 JV4479  NGVD 29 (07/19/86)  178.5    (m)          586.     (f) VERT ANG       
 JV4479
 JV4479.Superseded values are not recommended for survey control.
 JV4479
 JV4479.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4479.See file dsdata.pdf to determine how the superseded data were derived.
 JV4479
 JV4479_MARKER: I = METAL ROD
 JV4479_SETTING: 0 = UNSPECIFIED SETTING
 JV4479_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4479
 JV4479  HISTORY     - Date     Condition        Report By
 JV4479  HISTORY     - 1969     MONUMENTED       WSSC
 JV4479
 JV4479                          STATION DESCRIPTION
 JV4479
 JV4479'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4479'THE STATION IS ABOUT 1-1/2 MILES SOUTH OF COMUS AND 1/2 MILE
 JV4479'NORTHWEST OF SLIDELL.
 JV4479'
 JV4479'TO REACH THE STATION FROM THE INTERSECTION OF RIDGE ROAD AND
 JV4479'OLD BALTIMORE ROAD, GO NORTH ON RIDGE ROAD FOR .35 MILES TO THE
 JV4479'STATION ON THE RIGHT.
 JV4479'
 JV4479'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4479'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 52.86 FEET NORTH
 JV4479'OF POLE NO. 14852, 71.73 FEET SOUTHWEST OF THE NORTHWEST
 JV4479'CORNER OF A BARN AND 40.48 FEET WEST OF THE SOUTHWEST CORNER
 JV4479'OF A SHED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4478 ***********************************************************************
 JV4478  DESIGNATION -  17092 WSSC 1969
 JV4478  PID         -  JV4478
 JV4478  STATE/COUNTY-  MD/MONTGOMERY
 JV4478  COUNTRY     -  US
 JV4478  USGS QUAD   -  GERMANTOWN (2016)
 JV4478
 JV4478                         *CURRENT SURVEY CONTROL
 JV4478  ______________________________________________________________________
 JV4478* NAD 83(1993) POSITION- 39 13 11.05823(N) 077 20 30.29673(W)   ADJUSTED
 JV4478* NAVD 88 ORTHO HEIGHT -   169.2   (meters)      555.    (feet) VERTCON3
 JV4478  ______________________________________________________________________
 JV4478  GEOID HEIGHT    -        -32.038 (meters)                     GEOID18
 JV4478  LAPLACE CORR    -          5.10  (seconds)                    DEFLEC18
 JV4478  HORZ ORDER      -  SECOND
 JV4478
 JV4478.The horizontal coordinates were established by classical geodetic methods
 JV4478.and adjusted by the National Geodetic Survey in November 1994.
 JV4478
 JV4478.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4478.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4478
 JV4478.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4478.GEOID18 height accuracy estimate available here.
 JV4478
 JV4478.Click photographs - Photos may exist for this station.
 JV4478
 JV4478.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4478
 JV4478. The following values were computed from the NAD 83(1993) position.
 JV4478
 JV4478;                    North         East     Units Scale Factor Converg.
 JV4478;SPC MD       -   172,455.268   370,488.311   MT  0.99996782   -0 12 52.2
 JV4478;SPC MD       -   565,796.99  1,215,510.40   sFT  0.99996782   -0 12 52.2
 JV4478;UTM  18      - 4,343,774.625   297,841.131   MT  1.00010323   -1 28 52.2
 JV4478
 JV4478!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4478!SPC MD       -   0.99997848  x   0.99996782  =   0.99994630
 JV4478!UTM  18      -   0.99997848  x   1.00010323  =   1.00008171
 JV4478
 JV4478_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9784143774(NAD 83)
 JV4478
 JV4478                          SUPERSEDED SURVEY CONTROL
 JV4478
 JV4478  NAD 83(1991)-  39 13 11.05789(N)    077 20 30.29668(W) AD(       ) 2
 JV4478  NAD 83(1986)-  39 13 11.05790(N)    077 20 30.30726(W) AD(       ) 2
 JV4478  NAD 27      -  39 13 10.67666(N)    077 20 31.35217(W) AD(       ) 2
 JV4478  NGVD 29 (07/19/86)  169.4    (m)          556.     (f) VERT ANG       
 JV4478
 JV4478.Superseded values are not recommended for survey control.
 JV4478
 JV4478.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4478.See file dsdata.pdf to determine how the superseded data were derived.
 JV4478
 JV4478_MARKER: I = METAL ROD
 JV4478_SETTING: 0 = UNSPECIFIED SETTING
 JV4478_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4478
 JV4478  HISTORY     - Date     Condition        Report By
 JV4478  HISTORY     - 1969     MONUMENTED       WSSC
 JV4478
 JV4478                          STATION DESCRIPTION
 JV4478
 JV4478'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4478'THE STATION IS ABOUT 1/2 MILE WEST OF SLIDELL AND 2 MILES
 JV4478'SOUTH OF COMUS.
 JV4478'
 JV4478'TO REACH THE STATION FROM THE INTERSECTION OF RIDGE ROAD AND
 JV4478'OLD BALTIMORE ROAD, GO EAST ON OLD BALTIMORE ROAD FOR .45 MILES
 JV4478'TO THE STATION ON THE RIGHT.
 JV4478'
 JV4478'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4478'AND IS FLUSH WITH THE SURFACE.  IT IS 34.62 FEET WEST OF POLE
 JV4478'NO. M-10, 14.82 FEET NORTHEAST OF A 12-INCH HOLLY, 12.90 FEET
 JV4478'NORTHWEST OF A 24-INCH SPRUCE AND 33.80 FEET SOUTH OF A NAIL IN
 JV4478'THE TOP OF A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4477 ***********************************************************************
 JV4477  DESIGNATION -  17093 WSSC 1969
 JV4477  PID         -  JV4477
 JV4477  STATE/COUNTY-  MD/MONTGOMERY
 JV4477  COUNTRY     -  US
 JV4477  USGS QUAD   -  GERMANTOWN (2016)
 JV4477
 JV4477                         *CURRENT SURVEY CONTROL
 JV4477  ______________________________________________________________________
 JV4477* NAD 83(1993) POSITION- 39 14 38.03200(N) 077 20 00.31013(W)   ADJUSTED
 JV4477* NAVD 88 ORTHO HEIGHT -   177.1   (meters)      581.    (feet) VERTCON3
 JV4477  ______________________________________________________________________
 JV4477  GEOID HEIGHT    -        -32.066 (meters)                     GEOID18
 JV4477  LAPLACE CORR    -          5.39  (seconds)                    DEFLEC18
 JV4477  HORZ ORDER      -  SECOND
 JV4477
 JV4477.The horizontal coordinates were established by classical geodetic methods
 JV4477.and adjusted by the National Geodetic Survey in November 1994.
 JV4477
 JV4477.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4477.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4477
 JV4477.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4477.GEOID18 height accuracy estimate available here.
 JV4477
 JV4477.Click photographs - Photos may exist for this station.
 JV4477
 JV4477.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4477
 JV4477. The following values were computed from the NAD 83(1993) position.
 JV4477
 JV4477;                    North         East     Units Scale Factor Converg.
 JV4477;SPC MD       -   175,134.679   371,217.406   MT  0.99997044   -0 12 33.4
 JV4477;SPC MD       -   574,587.69  1,217,902.44   sFT  0.99997044   -0 12 33.4
 JV4477;UTM  18      - 4,346,437.611   298,629.400   MT  1.00009931   -1 28 36.0
 JV4477
 JV4477!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4477!SPC MD       -   0.99997724  x   0.99997044  =   0.99994769
 JV4477!UTM  18      -   0.99997724  x   1.00009931  =   1.00007655
 JV4477
 JV4477:                Primary Azimuth Mark                     Grid Az
 JV4477:SPC MD       -  COMUS RESET                              260 40 21.8
 JV4477:UTM  18      -  COMUS RESET                              261 56 24.4
 JV4477
 JV4477_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9862946437(NAD 83)
 JV4477
 JV4477|---------------------------------------------------------------------|
 JV4477| PID    Reference Object                     Distance      Geod. Az  |
 JV4477|                                                           dddmmss.s |
 JV4477| JV4462 COMUS RESET                         APPROX. 2.0 KM 2602748.4 |
 JV4477|---------------------------------------------------------------------|
 JV4477
 JV4477                          SUPERSEDED SURVEY CONTROL
 JV4477
 JV4477  NAD 83(1991)-  39 14 38.03164(N)    077 20 00.30997(W) AD(       ) 2
 JV4477  NAD 83(1986)-  39 14 38.03166(N)    077 20 00.32064(W) AD(       ) 2
 JV4477  NAD 27      -  39 14 37.65166(N)    077 20 01.36626(W) AD(       ) 2
 JV4477  NGVD 29 (07/19/86)  177.3    (m)          582.     (f) VERT ANG       
 JV4477
 JV4477.Superseded values are not recommended for survey control.
 JV4477
 JV4477.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4477.See file dsdata.pdf to determine how the superseded data were derived.
 JV4477
 JV4477_MARKER: I = METAL ROD
 JV4477_SETTING: 0 = UNSPECIFIED SETTING
 JV4477_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4477
 JV4477  HISTORY     - Date     Condition        Report By
 JV4477  HISTORY     - 1969     MONUMENTED       WSSC
 JV4477
 JV4477                          STATION DESCRIPTION
 JV4477
 JV4477'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4477'THE STATION IS ABOUT 1 MILE SOUTHEAST OF COMUS AND 1-1/2
 JV4477'MILES NORTH OF SLIDELL.
 JV4477'
 JV4477'TO REACH THE STATION FROM THE INERSECTION OF RIDGE ROAD AND
 JV4477'COMUS ROAD, GO WEST ON COMUS ROAD FOR .5 MILES TO THE
 JV4477'STATION ON THE RIGHT.
 JV4477'
 JV4477'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4477'AND IS FLUSH WITH THE SURFACE.  IT IS OPPOSITE THE ENTRANCE TO
 JV4477'THE W.D. CARTER FARM AND IS 17.85 FEET EAST OF A POWER POLE,
 JV4477'79.36 FEET WEST OF A POWER POLE, 78.43 FEET SOUTHEAST OF A
 JV4477'POWER POLE, AND 18.7 FEET NORTH OF THE NORTH EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4475 ***********************************************************************
 JV4475  DESIGNATION -  17094 WSSC 1969
 JV4475  PID         -  JV4475
 JV4475  STATE/COUNTY-  MD/MONTGOMERY
 JV4475  COUNTRY     -  US
 JV4475  USGS QUAD   -  GERMANTOWN (2016)
 JV4475
 JV4475                         *CURRENT SURVEY CONTROL
 JV4475  ______________________________________________________________________
 JV4475* NAD 83(1993) POSITION- 39 14 32.08207(N) 077 19 34.50996(W)   ADJUSTED
 JV4475* NAVD 88 ORTHO HEIGHT -   185.8   (meters)      610.    (feet) VERTCON3
 JV4475  ______________________________________________________________________
 JV4475  GEOID HEIGHT    -        -32.043 (meters)                     GEOID18
 JV4475  LAPLACE CORR    -          5.15  (seconds)                    DEFLEC18
 JV4475  HORZ ORDER      -  SECOND
 JV4475
 JV4475.The horizontal coordinates were established by classical geodetic methods
 JV4475.and adjusted by the National Geodetic Survey in November 1994.
 JV4475
 JV4475.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4475.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4475
 JV4475.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4475.GEOID18 height accuracy estimate available here.
 JV4475
 JV4475.Click photographs - Photos may exist for this station.
 JV4475
 JV4475.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4475
 JV4475. The following values were computed from the NAD 83(1993) position.
 JV4475
 JV4475;                    North         East     Units Scale Factor Converg.
 JV4475;SPC MD       -   174,948.961   371,835.417   MT  0.99997025   -0 12 17.2
 JV4475;SPC MD       -   573,978.38  1,219,930.03   sFT  0.99997025   -0 12 17.2
 JV4475;UTM  18      - 4,346,238.244   299,243.231   MT  1.00009627   -1 28 19.5
 JV4475
 JV4475!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4475!SPC MD       -   0.99997588  x   0.99997025  =   0.99994613
 JV4475!UTM  18      -   0.99997588  x   1.00009627  =   1.00007214
 JV4475
 JV4475_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9924346238(NAD 83)
 JV4475
 JV4475                          SUPERSEDED SURVEY CONTROL
 JV4475
 JV4475  NAD 83(1991)-  39 14 32.08168(N)    077 19 34.50980(W) AD(       ) 2
 JV4475  NAD 83(1986)-  39 14 32.08172(N)    077 19 34.52046(W) AD(       ) 2
 JV4475  NAD 27      -  39 14 31.70159(N)    077 19 35.56691(W) AD(       ) 2
 JV4475  NGVD 29 (07/19/86)  186.0    (m)          610.     (f) VERT ANG       
 JV4475
 JV4475.Superseded values are not recommended for survey control.
 JV4475
 JV4475.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4475.See file dsdata.pdf to determine how the superseded data were derived.
 JV4475
 JV4475_MARKER: I = METAL ROD
 JV4475_SETTING: 0 = UNSPECIFIED SETTING
 JV4475_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4475
 JV4475  HISTORY     - Date     Condition        Report By
 JV4475  HISTORY     - 1969     MONUMENTED       WSSC
 JV4475
 JV4475                          STATION DESCRIPTION
 JV4475
 JV4475'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4475'THE STATION IS ABOUT 1-1/2 MILES SOUTHEAST OF COMUS AND 1-1/2
 JV4475'MILES NORTH OF SLIDELL.
 JV4475'
 JV4475'THE STATION IS LOCATED ON THE SOUTHEAST CORNER OF COMUS ROAD
 JV4475'AND RIDGE ROAD.
 JV4475'
 JV4475'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4475'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 59.29 FEET
 JV4475'SOUTHEAST OF POLE NO. M-30, 47.35 FEET NORTHWEST OF THE
 JV4475'NORTHWEST CORNER OF A HOUSE AND 80.95 FEET EAST OF A 36-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4484 ***********************************************************************
 JV4484  DESIGNATION -  17095 WSSC 1969
 JV4484  PID         -  JV4484
 JV4484  STATE/COUNTY-  MD/MONTGOMERY
 JV4484  COUNTRY     -  US
 JV4484  USGS QUAD   -  GERMANTOWN (2016)
 JV4484
 JV4484                         *CURRENT SURVEY CONTROL
 JV4484  ______________________________________________________________________
 JV4484* NAD 83(1993) POSITION- 39 13 14.10791(N) 077 22 15.32706(W)   ADJUSTED
 JV4484* NAVD 88 ORTHO HEIGHT -   148.9   (meters)      489.    (feet) VERTCON3
 JV4484  ______________________________________________________________________
 JV4484  GEOID HEIGHT    -        -32.123 (meters)                     GEOID18
 JV4484  LAPLACE CORR    -          5.80  (seconds)                    DEFLEC18
 JV4484  HORZ ORDER      -  SECOND
 JV4484
 JV4484.The horizontal coordinates were established by classical geodetic methods
 JV4484.and adjusted by the National Geodetic Survey in November 1994.
 JV4484
 JV4484.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4484.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4484
 JV4484.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4484.GEOID18 height accuracy estimate available here.
 JV4484
 JV4484.Click photographs - Photos may exist for this station.
 JV4484
 JV4484.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4484
 JV4484. The following values were computed from the NAD 83(1993) position.
 JV4484
 JV4484;                    North         East     Units Scale Factor Converg.
 JV4484;SPC MD       -   172,559.147   367,969.296   MT  0.99996791   -0 13 58.1
 JV4484;SPC MD       -   566,137.80  1,207,245.93   sFT  0.99996791   -0 13 58.1
 JV4484;UTM  18      - 4,343,934.190   295,324.671   MT  1.00011584   -1 29 58.8
 JV4484
 JV4484!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4484!SPC MD       -   0.99998168  x   0.99996791  =   0.99994959
 JV4484!UTM  18      -   0.99998168  x   1.00011584  =   1.00009752
 JV4484
 JV4484:                Primary Azimuth Mark                     Grid Az
 JV4484:SPC MD       -  COMUS RESET                              029 27 53.1
 JV4484:UTM  18      -  COMUS RESET                              030 43 53.8
 JV4484
 JV4484_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9532443934(NAD 83)
 JV4484
 JV4484|---------------------------------------------------------------------|
 JV4484| PID    Reference Object                     Distance      Geod. Az  |
 JV4484|                                                           dddmmss.s |
 JV4484| JV4462 COMUS RESET                         APPROX. 2.6 KM 0291355.0 |
 JV4484| JV4485 17096                               312.715 METERS 27339     |
 JV4484|---------------------------------------------------------------------|
 JV4484
 JV4484                          SUPERSEDED SURVEY CONTROL
 JV4484
 JV4484  NAD 83(1991)-  39 13 14.10788(N)    077 22 15.32692(W) AD(       ) 2
 JV4484  NAD 83(1986)-  39 13 14.10781(N)    077 22 15.33750(W) AD(       ) 2
 JV4484  NAD 27      -  39 13 13.72682(N)    077 22 16.37910(W) AD(       ) 2
 JV4484  NGVD 29 (07/19/86)  149.1    (m)          489.     (f) VERT ANG       
 JV4484
 JV4484.Superseded values are not recommended for survey control.
 JV4484
 JV4484.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4484.See file dsdata.pdf to determine how the superseded data were derived.
 JV4484
 JV4484_MARKER: I = METAL ROD
 JV4484_SETTING: 0 = UNSPECIFIED SETTING
 JV4484_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4484
 JV4484  HISTORY     - Date     Condition        Report By
 JV4484  HISTORY     - 1969     MONUMENTED       WSSC
 JV4484
 JV4484                          STATION DESCRIPTION
 JV4484
 JV4484'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4484'THE STATION IS ABOUT 2 MILES SOUTH OF COMUS AND 1-1/2 MILES
 JV4484'WEST OF SLIDELL.
 JV4484'
 JV4484'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 117 AND
 JV4484'ROUTE 109, GO EAST ON ROUTE 117 FOR .25 MILES TO THE STATION ON
 JV4484'THE RIGHT.
 JV4484'
 JV4484'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4484'CENTER AND PROJECTS 2 INCHES ABOVE THE SURFACE.  IT IS AT THE
 JV4484'BOTTOM OF A BANK AND OPPOSITE A DRIVE LEADING TO THE CONOY
 JV4484'RESIDENCE.  IT IS 6.60 FEET WEST OF A POWER POLE, 95.87 FEET
 JV4484'EAST OF A POWER POLE, AND 86.21 FEET SOUTHEAST OF POLE NO. 13986.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4485 ***********************************************************************
 JV4485  DESIGNATION -  17096
 JV4485  PID         -  JV4485
 JV4485  STATE/COUNTY-  MD/MONTGOMERY
 JV4485  COUNTRY     -  US
 JV4485  USGS QUAD   -  GERMANTOWN (2016)
 JV4485
 JV4485                         *CURRENT SURVEY CONTROL
 JV4485  ______________________________________________________________________
 JV4485* NAD 83(1991) POSITION- 39 13 14.75465(N) 077 22 28.33671(W)   ADJUSTED
 JV4485* NAVD 88 ORTHO HEIGHT -   171.8   (meters)      564.    (feet) VERTCON3
 JV4485  ______________________________________________________________________
 JV4485  GEOID HEIGHT    -        -32.134 (meters)                     GEOID18
 JV4485  LAPLACE CORR    -          5.91  (seconds)                    DEFLEC18
 JV4485  HORZ ORDER      -  SECOND
 JV4485
 JV4485.The horizontal coordinates were established by classical geodetic methods
 JV4485.and adjusted by the National Geodetic Survey in January 1992.
 JV4485
 JV4485.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4485.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4485
 JV4485.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4485.GEOID18 height accuracy estimate available here.
 JV4485
 JV4485.Click photographs - Photos may exist for this station.
 JV4485
 JV4485.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4485
 JV4485. The following values were computed from the NAD 83(1991) position.
 JV4485
 JV4485;                    North         East     Units Scale Factor Converg.
 JV4485;SPC MD       -   172,580.365   367,657.315   MT  0.99996793   -0 14 06.3
 JV4485;SPC MD       -   566,207.41  1,206,222.37   sFT  0.99996793   -0 14 06.3
 JV4485;UTM  18      - 4,343,962.305   295,013.189   MT  1.00011741   -1 30 07.1
 JV4485
 JV4485!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4485!SPC MD       -   0.99997809  x   0.99996793  =   0.99994602
 JV4485!UTM  18      -   0.99997809  x   1.00011741  =   1.00009549
 JV4485
 JV4485_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9501343962(NAD 83)
 JV4485
 JV4485                          SUPERSEDED SURVEY CONTROL
 JV4485
 JV4485  NAD 83(1986)-  39 13 14.75457(N)    077 22 28.34727(W) AD(       ) 2
 JV4485  NAD 27      -  39 13 14.37360(N)    077 22 29.38845(W) AD(       ) 2
 JV4485  NGVD 29 (07/19/86)  172.0    (m)          564.     (f) VERT ANG       
 JV4485
 JV4485.Superseded values are not recommended for survey control.
 JV4485
 JV4485.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4485.See file dsdata.pdf to determine how the superseded data were derived.
 JV4485
 JV4485_MARKER: K = CLAY TILE PIPE
 JV4485_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV4485_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4485_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4485+SATELLITE: SATELLITE OBSERVATIONS - July 24, 2011
 JV4485
 JV4485  HISTORY     - Date     Condition        Report By
 JV4485  HISTORY     - 1969     MONUMENTED       WSSC
 JV4485  HISTORY     - 20110724 GOOD             GEOCAC
 JV4485  HISTORY     - 20131230 GOOD             BASE9
 JV4485
 JV4485                          STATION DESCRIPTION
 JV4485
 JV4485'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4485'THE STATION IS ABOUT 2 MILES SOUTH OF COMUS AND 1-1/2 MILES
 JV4485'WEST OF SLIDELL.
 JV4485'
 JV4485'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 117 AND
 JV4485'ROUTE 109, GO EAST ON ROUTE 117 FOR .1 MILE TO THE STATION ON
 JV4485'THE LEFT.
 JV4485'
 JV4485'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4485'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS ABOUT 50 FEET WEST
 JV4485'OF THE ENTRANCE TO THE BARNESVILLE BAPTIST CHURCH, 80.61 FEET
 JV4485'WEST OF POLE NO. 2, 40.14 FEET NORTH OF A POWER POLE, AND 29.68
 JV4485'FEET SOUTH OF THE SOUTHEAST CORNER OF A BRICK SIGN BASE.
 JV4485
 JV4485                          STATION RECOVERY (2011)
 JV4485
 JV4485'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JV4485'RECOVERED AS DESCRIBED.
 JV4485
 JV4485                          STATION RECOVERY (2013)
 JV4485
 JV4485'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV4485'MARK IS LOCATED 0.91 M (3.0 FT) WEST-SOUTHWEST OF A WSSC WITNESS POST,
 JV4485'3.30 M (10.8 FT) NORTH OF THE NORTH EDGE OF BARNESVILLE ROAD AND 9.57
 JV4485'M (31.4 FT) SOUTH-SOUTHEAST OF A BRICK SIGN FOR THE BARNESVILLE
 JV4485'BAPTIST CHURCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4588 ***********************************************************************
 JV4588  DESIGNATION -  17097 WSSC 1969
 JV4588  PID         -  JV4588
 JV4588  STATE/COUNTY-  MD/MONTGOMERY
 JV4588  COUNTRY     -  US
 JV4588  USGS QUAD   -  URBANA (2016)
 JV4588
 JV4588                         *CURRENT SURVEY CONTROL
 JV4588  ______________________________________________________________________
 JV4588* NAD 83(1993) POSITION- 39 17 09.95902(N) 077 16 53.90544(W)   ADJUSTED
 JV4588* NAVD 88 ORTHO HEIGHT -   201.6   (meters)      661.    (feet) VERTCON3
 JV4588  ______________________________________________________________________
 JV4588  GEOID HEIGHT    -        -32.024 (meters)                     GEOID18
 JV4588  LAPLACE CORR    -          5.20  (seconds)                    DEFLEC18
 JV4588  HORZ ORDER      -  SECOND
 JV4588
 JV4588.The horizontal coordinates were established by classical geodetic methods
 JV4588.and adjusted by the National Geodetic Survey in November 1994.
 JV4588
 JV4588.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4588.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4588
 JV4588.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4588.GEOID18 height accuracy estimate available here.
 JV4588
 JV4588.Click photographs - Photos may exist for this station.
 JV4588
 JV4588.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4588
 JV4588. The following values were computed from the NAD 83(1993) position.
 JV4588
 JV4588;                    North         East     Units Scale Factor Converg.
 JV4588;SPC MD       -   179,804.755   375,701.698   MT  0.99997543   -0 10 36.4
 JV4588;SPC MD       -   589,909.43  1,232,614.65   sFT  0.99997543   -0 10 36.4
 JV4588;UTM  18      - 4,351,007.844   303,216.459   MT  1.00007681   -1 26 42.7
 JV4588
 JV4588!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4588!SPC MD       -   0.99997340  x   0.99997543  =   0.99994883
 JV4588!UTM  18      -   0.99997340  x   1.00007681  =   1.00005020
 JV4588
 JV4588:                Primary Azimuth Mark                     Grid Az
 JV4588:SPC MD       -  17098 WSSC 1969                          123 38 27.6
 JV4588:UTM  18      -  17098 WSSC 1969                          124 54 33.9
 JV4588
 JV4588_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0321651007(NAD 83)
 JV4588
 JV4588|---------------------------------------------------------------------|
 JV4588| PID    Reference Object                     Distance      Geod. Az  |
 JV4588|                                                           dddmmss.s |
 JV4588| JV4223 DAMASCUS MUN TANK                   APPROX. 6.4 KM 0893517.6 |
 JV4588| JV4227 DAMASCUS METH CH SPIRE              APPROX. 7.0 KM 0901308.9 |
 JV4588| JV4587 17098 WSSC 1969                     APPROX. 0.7 KM 1232751.2 |
 JV4588| JV4589 17503 WSSC 1969                     155.234 METERS 22525     |
 JV4588|---------------------------------------------------------------------|
 JV4588
 JV4588                          SUPERSEDED SURVEY CONTROL
 JV4588
 JV4588  NAD 83(1991)-  39 17 09.95833(N)    077 16 53.90535(W) AD(       ) 2
 JV4588  NAD 83(1986)-  39 17 09.95854(N)    077 16 53.91596(W) AD(       ) 2
 JV4588  NAD 27      -  39 17 09.58011(N)    077 16 54.96710(W) AD(       ) 2
 JV4588  NGVD 29 (07/19/86)  201.8    (m)          662.     (f) VERT ANG       
 JV4588
 JV4588.Superseded values are not recommended for survey control.
 JV4588
 JV4588.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4588.See file dsdata.pdf to determine how the superseded data were derived.
 JV4588
 JV4588_MARKER: I = METAL ROD
 JV4588_SETTING: 0 = UNSPECIFIED SETTING
 JV4588_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4588
 JV4588  HISTORY     - Date     Condition        Report By
 JV4588  HISTORY     - 1969     MONUMENTED       WSSC
 JV4588
 JV4588                          STATION DESCRIPTION
 JV4588
 JV4588'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4588'THE STATION IS ABOUT 1 MILE WEST OF LEWISDALE AND 1-3/4 MILES
 JV4588'EAST OF HYATTSTOWN.
 JV4588'
 JV4588'TO REACH THE STATION FROM THE INTERSECTION OF RUDALE DRIVE AND
 JV4588'BERRYBELL ROAD GO SOUTH ON RUDALE DRIVE FOR .1 MILE TO THE
 JV4588'STATION ON THE LEFT.
 JV4588'
 JV4588'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4588'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 24.98 FEET
 JV4588'SOUTH OF POWER LINE POLE 56888, 62.98 FEET SOUTHEAST OF
 JV4588'POWER LINE POLE 56892, 92.99 FEET SOUTHWEST OF THE SOUTHWEST
 JV4588'CORNER OF A HOUSE AND 18.5 FEET EAST OF THE EAST EDGE OF THE
 JV4588'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4587 ***********************************************************************
 JV4587  DESIGNATION -  17098 WSSC 1969
 JV4587  PID         -  JV4587
 JV4587  STATE/COUNTY-  MD/MONTGOMERY
 JV4587  COUNTRY     -  US
 JV4587  USGS QUAD   -  URBANA (2016)
 JV4587
 JV4587                         *CURRENT SURVEY CONTROL
 JV4587  ______________________________________________________________________
 JV4587* NAD 83(1993) POSITION- 39 16 56.84195(N) 077 16 28.37212(W)   ADJUSTED
 JV4587* NAVD 88 ORTHO HEIGHT -   169.7   (meters)      557.    (feet) VERTCON3
 JV4587  ______________________________________________________________________
 JV4587  GEOID HEIGHT    -        -31.998 (meters)                     GEOID18
 JV4587  LAPLACE CORR    -          4.93  (seconds)                    DEFLEC18
 JV4587  HORZ ORDER      -  SECOND
 JV4587
 JV4587.The horizontal coordinates were established by classical geodetic methods
 JV4587.and adjusted by the National Geodetic Survey in November 1994.
 JV4587
 JV4587.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4587.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4587
 JV4587.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4587.GEOID18 height accuracy estimate available here.
 JV4587
 JV4587.Click photographs - Photos may exist for this station.
 JV4587
 JV4587.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4587
 JV4587. The following values were computed from the NAD 83(1993) position.
 JV4587
 JV4587;                    North         East     Units Scale Factor Converg.
 JV4587;SPC MD       -   179,398.384   376,312.387   MT  0.99997498   -0 10 20.3
 JV4587;SPC MD       -   588,576.20  1,234,618.22   sFT  0.99997498   -0 10 20.3
 JV4587;UTM  18      - 4,350,588.012   303,818.064   MT  1.00007390   -1 26 26.1
 JV4587
 JV4587!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4587!SPC MD       -   0.99997840  x   0.99997498  =   0.99995338
 JV4587!UTM  18      -   0.99997840  x   1.00007390  =   1.00005229
 JV4587
 JV4587:                Primary Azimuth Mark                     Grid Az
 JV4587:SPC MD       -  17097 WSSC 1969                          303 38 27.7
 JV4587:UTM  18      -  17097 WSSC 1969                          304 54 33.5
 JV4587
 JV4587_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0381850588(NAD 83)
 JV4587
 JV4587|---------------------------------------------------------------------|
 JV4587| PID    Reference Object                     Distance      Geod. Az  |
 JV4587|                                                           dddmmss.s |
 JV4587| JV4588 17097 WSSC 1969                     APPROX. 0.7 KM 3032807.4 |
 JV4587|---------------------------------------------------------------------|
 JV4587
 JV4587                          SUPERSEDED SURVEY CONTROL
 JV4587
 JV4587  NAD 83(1991)-  39 16 56.84127(N)    077 16 28.37203(W) AD(       ) 2
 JV4587  NAD 83(1986)-  39 16 56.84147(N)    077 16 28.38268(W) AD(       ) 2
 JV4587  NAD 27      -  39 16 56.46293(N)    077 16 29.43458(W) AD(       ) 2
 JV4587  NGVD 29 (07/19/86)  169.9    (m)          557.     (f) VERT ANG       
 JV4587
 JV4587.Superseded values are not recommended for survey control.
 JV4587
 JV4587.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4587.See file dsdata.pdf to determine how the superseded data were derived.
 JV4587
 JV4587_MARKER: I = METAL ROD
 JV4587_SETTING: 0 = UNSPECIFIED SETTING
 JV4587_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4587
 JV4587  HISTORY     - Date     Condition        Report By
 JV4587  HISTORY     - 1969     MONUMENTED       WSSC
 JV4587
 JV4587                          STATION DESCRIPTION
 JV4587
 JV4587'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4587'THE STATION IS ABOUT 3/4 MILE SOUTHWEST OF LEWISDALE, AND 2-1/4
 JV4587'MILES EAST OF HYATTSTOWN.
 JV4587'
 JV4587'TO REACH THE STATION FROM THE INTERSECTION OF BEALL ROAD AND
 JV4587'BERRY BELL ROAD, GO SOUTH ON BEALL ROAD FOR .3 MILE TO THE
 JV4587'STATION ON THE LEFT.
 JV4587'
 JV4587'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4587'CENTER AND IS 1-INCH BELOW THE SURFACE.  IT IS 13.55 FEET SOUTH
 JV4587'OF POWER LINE POLE 15, 31.58 FEET SOUTHEAST OF A POWER LINE
 JV4587'POLE, 29.18 FEET NORTH OF A 15-INCH LOCUST TREE, 76.00 FEET
 JV4587'SOUTHWEST OF THE SOUTHWEST CORNER OF A CINDER BLOCK BUILDING
 JV4587'AND 13.50 FEET EAST OF THE CENTER OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4585 ***********************************************************************
 JV4585  DESIGNATION -  17099 WSSC 1969
 JV4585  PID         -  JV4585
 JV4585  STATE/COUNTY-  MD/MONTGOMERY
 JV4585  COUNTRY     -  US
 JV4585  USGS QUAD   -  URBANA (2016)
 JV4585
 JV4585                         *CURRENT SURVEY CONTROL
 JV4585  ______________________________________________________________________
 JV4585* NAD 83(1993) POSITION- 39 18 51.42014(N) 077 15 12.50391(W)   ADJUSTED
 JV4585* NAVD 88 ORTHO HEIGHT -   200.6   (meters)      658.    (feet) VERTCON3
 JV4585  ______________________________________________________________________
 JV4585  GEOID HEIGHT    -        -32.013 (meters)                     GEOID18
 JV4585  LAPLACE CORR    -          4.92  (seconds)                    DEFLEC18
 JV4585  HORZ ORDER      -  SECOND
 JV4585
 JV4585.The horizontal coordinates were established by classical geodetic methods
 JV4585.and adjusted by the National Geodetic Survey in November 1994.
 JV4585
 JV4585.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4585.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4585
 JV4585.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4585.GEOID18 height accuracy estimate available here.
 JV4585
 JV4585.Click photographs - Photos may exist for this station.
 JV4585
 JV4585.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4585
 JV4585. The following values were computed from the NAD 83(1993) position.
 JV4585
 JV4585;                    North         East     Units Scale Factor Converg.
 JV4585;SPC MD       -   182,926.532   378,140.473   MT  0.99997907   -0 09 32.7
 JV4585;SPC MD       -   600,151.46  1,240,615.87   sFT  0.99997907   -0 09 32.7
 JV4585;UTM  18      - 4,354,075.142   305,723.994   MT  1.00006474   -1 25 41.5
 JV4585
 JV4585!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4585!SPC MD       -   0.99997355  x   0.99997907  =   0.99995262
 JV4585!UTM  18      -   0.99997355  x   1.00006474  =   1.00003829
 JV4585
 JV4585:                Primary Azimuth Mark                     Grid Az
 JV4585:SPC MD       -  MONROVIA ATT MICROWAVE                   328 49 40.2
 JV4585:UTM  18      -  MONROVIA ATT MICROWAVE                   330 05 49.0
 JV4585
 JV4585_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0572354075(NAD 83)
 JV4585
 JV4585|---------------------------------------------------------------------|
 JV4585| PID    Reference Object                     Distance      Geod. Az  |
 JV4585|                                                           dddmmss.s |
 JV4585| JV4583 MONROVIA ATT MICROWAVE              APPROX. 4.5 KM 3284007.5 |
 JV4585|---------------------------------------------------------------------|
 JV4585
 JV4585                          SUPERSEDED SURVEY CONTROL
 JV4585
 JV4585  NAD 83(1991)-  39 18 51.41946(N)    077 15 12.50388(W) AD(       ) 2
 JV4585  NAD 83(1986)-  39 18 51.41967(N)    077 15 12.51446(W) AD(       ) 2
 JV4585  NAD 27      -  39 18 51.04259(N)    077 15 13.56904(W) AD(       ) 2
 JV4585  NGVD 29 (07/19/86)  200.8    (m)          659.     (f) VERT ANG       
 JV4585
 JV4585.Superseded values are not recommended for survey control.
 JV4585
 JV4585.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4585.See file dsdata.pdf to determine how the superseded data were derived.
 JV4585
 JV4585_MARKER: I = METAL ROD
 JV4585_SETTING: 0 = UNSPECIFIED SETTING
 JV4585_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4585
 JV4585  HISTORY     - Date     Condition        Report By
 JV4585  HISTORY     - 1969     MONUMENTED       WSSC
 JV4585
 JV4585                          STATION DESCRIPTION
 JV4585
 JV4585'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4585'THE STATION IS ABOUT 2 MILES NORTH OF LEWISDALE, 4 MILES
 JV4585'NORTHEAST OF HYATTSTOWN AND IS ON THE FREDERICK COUNTY AND
 JV4585'MONTGOMERY COUNTY LINES.
 JV4585'
 JV4585'TO REACH THE STATION FROM THE INTERSECTION OF LEWISDALE ROAD
 JV4585'AND ROUTE 123, GO NORTH ON LEWISDALE ROAD FOR 1.2 MILES TO
 JV4585'BARNES ROAD ON THE LEFT.  GO LEFT FOR .8 MILES TO THE STATION
 JV4585'ON THE RIGHT.
 JV4585'
 JV4585'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4585'AND IS FLUSH WITH THE SURFACE.  IT IS 69.13 FEET NORTHEAST OF
 JV4585'A POWER LINE POLE, 19.75 FEET SOUTHWEST OF A 6-INCH HICKORY
 JV4585'TREE, 30.28 FEET SOUTHWEST OF AN 8-INCH OAK TREE AND IS 38.78
 JV4585'FEET WEST OF A 30-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1202 ***********************************************************************
 HV1202  DESIGNATION -  1710 WSSC
 HV1202  PID         -  HV1202
 HV1202  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1202  COUNTRY     -  US
 HV1202  USGS QUAD   -  LANHAM (2016)
 HV1202
 HV1202                         *CURRENT SURVEY CONTROL
 HV1202  ______________________________________________________________________
 HV1202* NAD 83(1986) POSITION- 38 53 50.     (N) 076 49 54.     (W)   SCALED
 HV1202* NAVD 88 ORTHO HEIGHT -    51.255 (meters)      168.16  (feet) ADJUSTED
 HV1202  ______________________________________________________________________
 HV1202  GEOID HEIGHT    -        -32.526 (meters)                     GEOID18
 HV1202  DYNAMIC HEIGHT  -         51.227 (meters)      168.07  (feet) COMP
 HV1202  MODELED GRAVITY -    980,080.9   (mgal)                       NAVD 88
 HV1202
 HV1202  VERT ORDER      -  SECOND    CLASS 0
 HV1202
 HV1202.The horizontal coordinates were scaled from a map and have
 HV1202.an estimated accuracy of +/- 6 seconds.
 HV1202
 HV1202.The orthometric height was determined by differential leveling and
 HV1202.adjusted by the NATIONAL GEODETIC SURVEY
 HV1202.in June 1991.
 HV1202
 HV1202.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1202.GEOID18 height accuracy estimate available here.
 HV1202
 HV1202.Click photographs - Photos may exist for this station.
 HV1202
 HV1202.The dynamic height is computed by dividing the NAVD 88
 HV1202.geopotential number by the normal gravity value computed on the
 HV1202.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1202.degrees latitude (g = 980.6199 gals.).
 HV1202
 HV1202.The modeled gravity was interpolated from observed gravity values.
 HV1202
 HV1202;                    North         East    Units  Estimated Accuracy
 HV1202;SPC MD       -   136,610.      414,600.      MT  (+/- 180 meters Scaled)
 HV1202
 HV1202_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ411069(NAD 83)
 HV1202
 HV1202                          SUPERSEDED SURVEY CONTROL
 HV1202
 HV1202  NGVD 29 (11/26/84)   51.509  (m)          168.99   (f) ADJUSTED    2 0
 HV1202
 HV1202.Superseded values are not recommended for survey control.
 HV1202
 HV1202.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1202.See file dsdata.pdf to determine how the superseded data were derived.
 HV1202
 HV1202_MARKER: DD = SURVEY DISK
 HV1202_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1202_STAMPING: 1710
 HV1202_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1202
 HV1202  HISTORY     - Date     Condition        Report By
 HV1202  HISTORY     - UNK      MONUMENTED       WSSC
 HV1202  HISTORY     - 1944     GOOD             WSSC
 HV1202  HISTORY     - 1957     MARK NOT FOUND   USGS
 HV1202  HISTORY     - 20040303 MARK NOT FOUND   URS
 HV1202
 HV1202                          STATION DESCRIPTION
 HV1202
 HV1202'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1202'AT LARGO.
 HV1202'AT LARGO, PRINCE GEORGES COUNTY, 47 FEET SOUTHEAST OF THE CENTER
 HV1202'OF INTERSECTION OF STATE HIGHWAYS 202 AND 214, 14.3 FEET
 HV1202'NORTH-NORTHWEST OF THE NORTHWEST CORNER OF A CONCRETE SIDEWALK
 HV1202'LEADING WEST FROM A HOUSE, 36.5 FEET NORTHWEST OF THE NORTHWEST
 HV1202'BRICK PILLAR AT THE CORNER OF THE PORCH, AND 12.9 FEET
 HV1202'SOUTH-SOUTHEAST OF THE MOST NORTHWESTERLY MAPLE TREE IN THE
 HV1202'YARD.  A WASHINGTON SUBURBAN SANITARY DISTRICT DISK, STAMPED
 HV1202'1710 AND FASTENED ON THE TOP OF AN IRON PIPE ABOUT FLUSH WITH THE
 HV1202'GROUND.
 HV1202
 HV1202                          STATION RECOVERY (1957)
 HV1202
 HV1202'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV1202'MARK NOT FOUND.
 HV1202
 HV1202                          STATION RECOVERY (2004)
 HV1202
 HV1202'RECOVERY NOTE BY URS COMPANY 2004
 HV1202'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4586 ***********************************************************************
 JV4586  DESIGNATION -  17100 WSSC 1969
 JV4586  PID         -  JV4586
 JV4586  STATE/COUNTY-  MD/MONTGOMERY
 JV4586  COUNTRY     -  US
 JV4586  USGS QUAD   -  URBANA (2016)
 JV4586
 JV4586                         *CURRENT SURVEY CONTROL
 JV4586  ______________________________________________________________________
 JV4586* NAD 83(1993) POSITION- 39 17 50.26078(N) 077 16 22.89414(W)   ADJUSTED
 JV4586* NAVD 88 ORTHO HEIGHT -   190.4   (meters)      625.    (feet) VERTCON3
 JV4586  ______________________________________________________________________
 JV4586  GEOID HEIGHT    -        -32.027 (meters)                     GEOID18
 JV4586  LAPLACE CORR    -          5.11  (seconds)                    DEFLEC18
 JV4586  HORZ ORDER      -  SECOND
 JV4586
 JV4586.The horizontal coordinates were established by classical geodetic methods
 JV4586.and adjusted by the National Geodetic Survey in November 1994.
 JV4586
 JV4586.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4586.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4586
 JV4586.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4586.GEOID18 height accuracy estimate available here.
 JV4586
 JV4586.Click photographs - Photos may exist for this station.
 JV4586
 JV4586.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4586
 JV4586. The following values were computed from the NAD 83(1993) position.
 JV4586
 JV4586;                    North         East     Units Scale Factor Converg.
 JV4586;SPC MD       -   181,045.336   376,448.601   MT  0.99997685   -0 10 16.9
 JV4586;SPC MD       -   593,979.57  1,235,065.12   sFT  0.99997685   -0 10 16.9
 JV4586;UTM  18      - 4,352,231.705   303,990.720   MT  1.00007307   -1 26 24.2
 JV4586
 JV4586!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4586!SPC MD       -   0.99997515  x   0.99997685  =   0.99995200
 JV4586!UTM  18      -   0.99997515  x   1.00007307  =   1.00004822
 JV4586
 JV4586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0399052231(NAD 83)
 JV4586
 JV4586                          SUPERSEDED SURVEY CONTROL
 JV4586
 JV4586  NAD 83(1991)-  39 17 50.26002(N)    077 16 22.89399(W) AD(       ) 2
 JV4586  NAD 83(1986)-  39 17 50.26001(N)    077 16 22.90427(W) AD(       ) 2
 JV4586  NAD 27      -  39 17 49.88166(N)    077 16 23.95607(W) AD(       ) 2
 JV4586  NGVD 29 (07/19/86)  190.6    (m)          625.     (f) VERT ANG       
 JV4586
 JV4586.Superseded values are not recommended for survey control.
 JV4586
 JV4586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4586.See file dsdata.pdf to determine how the superseded data were derived.
 JV4586
 JV4586_MARKER: I = METAL ROD
 JV4586_SETTING: 0 = UNSPECIFIED SETTING
 JV4586_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4586
 JV4586  HISTORY     - Date     Condition        Report By
 JV4586  HISTORY     - 1969     MONUMENTED       WSSC
 JV4586
 JV4586                          STATION DESCRIPTION
 JV4586
 JV4586'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4586'THE STATION IS ABOUT 1 MILE NORTHWEST OF LEWISDALE AND 2-1/2
 JV4586'MILES NORTHEAST OF HYATTSTOWN.
 JV4586'
 JV4586'TO REACH THE STATION FROM THE INTERSECTION OF LEWISDALE ROAD
 JV4586'AND PRICES DISTILLERY ROAD, GO NORTH ON PRICES DISTILLERY ROAD
 JV4586'FOR .65 MILES TO THE STATION ON THE LEFT.
 JV4586'
 JV4586'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4586'CENTER AND IS 1-INCH BELOW THE SURFACE.  IT IS 39.23 FEET WEST
 JV4586'OF POWER LINE POLE NO. 14, 71.55 FEET NORTH OF THE NORTHEAST
 JV4586'CORNER OF A HOUSE AND 76.23 FEET NORTHEAST OF THE NORTHWEST
 JV4586'CORNER OF A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4237 ***********************************************************************
 JV4237  DESIGNATION -  17101 WSSC 1969
 JV4237  PID         -  JV4237
 JV4237  STATE/COUNTY-  MD/MONTGOMERY
 JV4237  COUNTRY     -  US
 JV4237  USGS QUAD   -  DAMASCUS (2016)
 JV4237
 JV4237                         *CURRENT SURVEY CONTROL
 JV4237  ______________________________________________________________________
 JV4237* NAD 83(1993) POSITION- 39 17 50.23849(N) 077 13 39.38528(W)   ADJUSTED
 JV4237* NAVD 88 ORTHO HEIGHT -   237.9   (meters)      781.    (feet) VERTCON3
 JV4237  ______________________________________________________________________
 JV4237  GEOID HEIGHT    -        -31.918 (meters)                     GEOID18
 JV4237  LAPLACE CORR    -          4.09  (seconds)                    DEFLEC18
 JV4237  HORZ ORDER      -  SECOND
 JV4237
 JV4237.The horizontal coordinates were established by classical geodetic methods
 JV4237.and adjusted by the National Geodetic Survey in November 1994.
 JV4237
 JV4237.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4237.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4237
 JV4237.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4237.GEOID18 height accuracy estimate available here.
 JV4237
 JV4237.Click photographs - Photos may exist for this station.
 JV4237
 JV4237.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4237
 JV4237. The following values were computed from the NAD 83(1993) position.
 JV4237
 JV4237;                    North         East     Units Scale Factor Converg.
 JV4237;SPC MD       -   181,033.905   380,366.471   MT  0.99997685   -0 08 34.3
 JV4237;SPC MD       -   593,942.07  1,247,919.00   sFT  0.99997685   -0 08 34.3
 JV4237;UTM  18      - 4,352,133.532   307,907.717   MT  1.00005435   -1 24 40.6
 JV4237
 JV4237!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4237!SPC MD       -   0.99996768  x   0.99997685  =   0.99994454
 JV4237!UTM  18      -   0.99996768  x   1.00005435  =   1.00002203
 JV4237
 JV4237_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0790752133(NAD 83)
 JV4237
 JV4237                          SUPERSEDED SURVEY CONTROL
 JV4237
 JV4237  NAD 83(1991)-  39 17 50.23786(N)    077 13 39.38570(W) AD(       ) 2
 JV4237  NAD 83(1986)-  39 17 50.23806(N)    077 13 39.39603(W) AD(       ) 2
 JV4237  NAD 27      -  39 17 49.86048(N)    077 13 40.45366(W) AD(       ) 2
 JV4237  NGVD 29 (07/19/86)  238.1    (m)          781.     (f) VERT ANG       
 JV4237
 JV4237.Superseded values are not recommended for survey control.
 JV4237
 JV4237.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4237.See file dsdata.pdf to determine how the superseded data were derived.
 JV4237
 JV4237_MARKER: I = METAL ROD
 JV4237_SETTING: 0 = UNSPECIFIED SETTING
 JV4237_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4237
 JV4237  HISTORY     - Date     Condition        Report By
 JV4237  HISTORY     - 1969     MONUMENTED       WSSC
 JV4237
 JV4237                          STATION DESCRIPTION
 JV4237
 JV4237'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4237'THE STATION IS ABOUT 1-1/2 MILES NORTHWEST OF DAMASCUS AND
 JV4237'1 MILE SOUTHEAST OF BROWNINGSVILLE.
 JV4237'
 JV4237'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 122 AND
 JV4237'ROUTE 27 IN DAMASCUS, GO WEST ON ROUTE 122 FOR 1.5 MILES TO THE
 JV4237'HIGHEST POINT IN THE IMMEDIATE VICINITY AND THE STATION IS ON
 JV4237'THE LEFT.
 JV4237'
 JV4237'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4237'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 74.11 FEET
 JV4237'NORTHWEST OF THE NORTHWEST CORNER OF HOUSE 10910, 10.44 FEET
 JV4237'EAST OF A POWER LINE POLE, 35.52 FEET SOUTH OF C AND P POLE NO.
 JV4237'12, AND 86.60 FEET WEST OF THE NORTHWEST CORNER OF A BRICK
 JV4237'PILLAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4236 ***********************************************************************
 JV4236  DESIGNATION -  17102 WSSC 1969
 JV4236  PID         -  JV4236
 JV4236  STATE/COUNTY-  MD/MONTGOMERY
 JV4236  COUNTRY     -  US
 JV4236  USGS QUAD   -  DAMASCUS (2016)
 JV4236
 JV4236                         *CURRENT SURVEY CONTROL
 JV4236  ______________________________________________________________________
 JV4236* NAD 83(1993) POSITION- 39 18 27.45258(N) 077 11 51.97105(W)   ADJUSTED
 JV4236* NAVD 88 ORTHO HEIGHT -   235.2   (meters)      772.    (feet) VERTCON3
 JV4236  ______________________________________________________________________
 JV4236  GEOID HEIGHT    -        -31.882 (meters)                     GEOID18
 JV4236  LAPLACE CORR    -          2.96  (seconds)                    DEFLEC18
 JV4236  HORZ ORDER      -  SECOND
 JV4236
 JV4236.The horizontal coordinates were established by classical geodetic methods
 JV4236.and adjusted by the National Geodetic Survey in November 1994.
 JV4236
 JV4236.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4236.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4236
 JV4236.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4236.GEOID18 height accuracy estimate available here.
 JV4236
 JV4236.Click photographs - Photos may exist for this station.
 JV4236
 JV4236.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4236
 JV4236. The following values were computed from the NAD 83(1993) position.
 JV4236
 JV4236;                    North         East     Units Scale Factor Converg.
 JV4236;SPC MD       -   182,175.534   382,942.737   MT  0.99997819   -0 07 26.9
 JV4236;SPC MD       -   597,687.56  1,256,371.30   sFT  0.99997819   -0 07 26.9
 JV4236;UTM  18      - 4,353,217.927   310,508.808   MT  1.00004213   -1 23 33.6
 JV4236
 JV4236!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4236!SPC MD       -   0.99996810  x   0.99997819  =   0.99994629
 JV4236!UTM  18      -   0.99996810  x   1.00004213  =   1.00001023
 JV4236
 JV4236_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1050853217(NAD 83)
 JV4236
 JV4236                          SUPERSEDED SURVEY CONTROL
 JV4236
 JV4236  NAD 83(1991)-  39 18 27.45207(N)    077 11 51.97155(W) AD(       ) 2
 JV4236  NAD 83(1986)-  39 18 27.45225(N)    077 11 51.98186(W) AD(       ) 2
 JV4236  NAD 27      -  39 18 27.07522(N)    077 11 53.04291(W) AD(       ) 2
 JV4236  NGVD 29 (07/19/86)  235.4    (m)          772.     (f) VERT ANG       
 JV4236
 JV4236.Superseded values are not recommended for survey control.
 JV4236
 JV4236.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4236.See file dsdata.pdf to determine how the superseded data were derived.
 JV4236
 JV4236_MARKER: I = METAL ROD
 JV4236_SETTING: 0 = UNSPECIFIED SETTING
 JV4236_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4236_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4236+SATELLITE: SATELLITE OBSERVATIONS - November 02, 2003
 JV4236
 JV4236  HISTORY     - Date     Condition        Report By
 JV4236  HISTORY     - 1969     MONUMENTED       WSSC
 JV4236  HISTORY     - 20031102 GOOD             USPSQD
 JV4236
 JV4236                          STATION DESCRIPTION
 JV4236
 JV4236'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4236'THE STATION IS ABOUT 1-1/2 MILES NORTH OF DAMASCUS AND 1/2
 JV4236'MILE SOUTH OF CLAGGETTSVILLE.
 JV4236'
 JV4236'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 27 AND
 JV4236'ROUTE 108 IN DAMASCUS, GO NORTH ON ROUTE 27 FOR 1.6 MILES TO
 JV4236'HURLEYS STORE AND THE STATION IS ON THE LEFT.
 JV4236'
 JV4236'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4236'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 45.50 FEET
 JV4236'NORTH OF POLE NO. F-2844, 52.45 FEET SOUTHWEST OF A POWER
 JV4236'LINE POLE, 49.96 FEET WEST OF POLE NO. 67, AND 48.37 FEET
 JV4236'SOUTHEAST OF THE NORTHEAST CORNER OF THE PORCH ON HOUSE 27504.
 JV4236
 JV4236                          STATION RECOVERY (2003)
 JV4236
 JV4236'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4236'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4516 ***********************************************************************
 JV4516  DESIGNATION -  17103 WSSC 1969
 JV4516  PID         -  JV4516
 JV4516  STATE/COUNTY-  MD/MONTGOMERY
 JV4516  COUNTRY     -  US
 JV4516  USGS QUAD   -  SENECA (2016)
 JV4516
 JV4516                         *CURRENT SURVEY CONTROL
 JV4516  ______________________________________________________________________
 JV4516* NAD 83(1993) POSITION- 39 06 23.41973(N) 077 20 58.93380(W)   ADJUSTED
 JV4516* NAVD 88 ORTHO HEIGHT -   105.6   (meters)      346.    (feet) VERTCON3
 JV4516  ______________________________________________________________________
 JV4516  GEOID HEIGHT    -        -31.919 (meters)                     GEOID18
 JV4516  LAPLACE CORR    -          4.17  (seconds)                    DEFLEC18
 JV4516  HORZ ORDER      -  SECOND
 JV4516
 JV4516.The horizontal coordinates were established by classical geodetic methods
 JV4516.and adjusted by the National Geodetic Survey in November 1994.
 JV4516
 JV4516.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4516.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4516
 JV4516.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4516.GEOID18 height accuracy estimate available here.
 JV4516
 JV4516.Click photographs - Photos may exist for this station.
 JV4516
 JV4516.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4516
 JV4516. The following values were computed from the NAD 83(1993) position.
 JV4516
 JV4516;                    North         East     Units Scale Factor Converg.
 JV4516;SPC MD       -   159,887.473   369,753.229   MT  0.99995793   -0 13 10.1
 JV4516;SPC MD       -   524,564.15  1,213,098.72   sFT  0.99995793   -0 13 10.1
 JV4516;UTM  18      - 4,331,224.322   296,828.649   MT  1.00010830   -1 28 57.4
 JV4516
 JV4516!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4516!SPC MD       -   0.99998844  x   0.99995793  =   0.99994637
 JV4516!UTM  18      -   0.99998844  x   1.00010830  =   1.00009674
 JV4516
 JV4516:                Primary Azimuth Mark                     Grid Az
 JV4516:SPC MD       -  DAWSONVILLE                              350 27 22.7
 JV4516:UTM  18      -  DAWSONVILLE                              351 43 10.0
 JV4516
 JV4516_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9682831224(NAD 83)
 JV4516
 JV4516|---------------------------------------------------------------------|
 JV4516| PID    Reference Object                     Distance      Geod. Az  |
 JV4516|                                                           dddmmss.s |
 JV4516| JV4453 DAWSONVILLE                         APPROX. 2.3 KM 3501412.6 |
 JV4516|---------------------------------------------------------------------|
 JV4516
 JV4516                          SUPERSEDED SURVEY CONTROL
 JV4516
 JV4516  NAD 83(1991)-  39 06 23.41947(N)    077 20 58.93445(W) AD(       ) 2
 JV4516  NAD 83(1986)-  39 06 23.41938(N)    077 20 58.94437(W) AD(       ) 2
 JV4516  NAD 27      -  39 06 23.03241(N)    077 20 59.99065(W) AD(       ) 2
 JV4516  NGVD 29 (07/19/86)  105.8    (m)          347.     (f) VERT ANG       
 JV4516
 JV4516.Superseded values are not recommended for survey control.
 JV4516
 JV4516.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4516.See file dsdata.pdf to determine how the superseded data were derived.
 JV4516
 JV4516_MARKER: I = METAL ROD
 JV4516_SETTING: 0 = UNSPECIFIED SETTING
 JV4516_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4516
 JV4516  HISTORY     - Date     Condition        Report By
 JV4516  HISTORY     - 1969     MONUMENTED       WSSC
 JV4516
 JV4516                          STATION DESCRIPTION
 JV4516
 JV4516'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4516'THE STATION IS ABOUT 3 MILES WEST OF DARNSTOWN 1-1/2 MILES
 JV4516'SOUTH OF DAWSONVILLE.
 JV4516'
 JV4516'THE STATION IS LOCATED ON THE SOUTH SIDE OF MONTEVIDEO ROAD
 JV4516'900 FEET EAST OF SUGARLAND ROAD.
 JV4516'
 JV4516'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4516'AND IS FLUSH WITH THE SURFACE.  IT IS 8.73 FEET SOUTHWEST OF
 JV4516'POWER LINE POLE M-36, 43.94 FEET SOUTHEAST OF POWER LINE POLE
 JV4516'M-3587, 56.82 FEET SOUTHEAST OF A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4517 ***********************************************************************
 JV4517  DESIGNATION -  17104 WSSC 1969
 JV4517  PID         -  JV4517
 JV4517  STATE/COUNTY-  MD/MONTGOMERY
 JV4517  COUNTRY     -  US
 JV4517  USGS QUAD   -  SENECA (2016)
 JV4517
 JV4517                         *CURRENT SURVEY CONTROL
 JV4517  ______________________________________________________________________
 JV4517* NAD 83(1993) POSITION- 39 06 07.46909(N) 077 22 17.97140(W)   ADJUSTED
 JV4517* NAVD 88 ORTHO HEIGHT -    94.5   (meters)      310.    (feet) VERTCON3
 JV4517  ______________________________________________________________________
 JV4517  GEOID HEIGHT    -        -31.962 (meters)                     GEOID18
 JV4517  LAPLACE CORR    -          4.23  (seconds)                    DEFLEC18
 JV4517  HORZ ORDER      -  SECOND
 JV4517
 JV4517.The horizontal coordinates were established by classical geodetic methods
 JV4517.and adjusted by the National Geodetic Survey in November 1994.
 JV4517
 JV4517.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4517.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4517
 JV4517.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4517.GEOID18 height accuracy estimate available here.
 JV4517
 JV4517.Click photographs - Photos may exist for this station.
 JV4517
 JV4517.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4517
 JV4517. The following values were computed from the NAD 83(1993) position.
 JV4517
 JV4517;                    North         East     Units Scale Factor Converg.
 JV4517;SPC MD       -   159,403.111   367,852.303   MT  0.99995762   -0 13 59.8
 JV4517;SPC MD       -   522,975.04  1,206,862.10   sFT  0.99995762   -0 13 59.8
 JV4517;UTM  18      - 4,330,781.913   294,917.210   MT  1.00011791   -1 29 46.8
 JV4517
 JV4517!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4517!SPC MD       -   0.99999019  x   0.99995762  =   0.99994781
 JV4517!UTM  18      -   0.99999019  x   1.00011791  =   1.00010810
 JV4517
 JV4517_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9491730781(NAD 83)
 JV4517
 JV4517                          SUPERSEDED SURVEY CONTROL
 JV4517
 JV4517  NAD 83(1991)-  39 06 07.46896(N)    077 22 17.97210(W) AD(       ) 2
 JV4517  NAD 83(1986)-  39 06 07.46877(N)    077 22 17.98199(W) AD(       ) 2
 JV4517  NAD 27      -  39 06 07.08193(N)    077 22 19.02590(W) AD(       ) 2
 JV4517  NGVD 29 (07/19/86)   94.7    (m)          311.     (f) VERT ANG       
 JV4517
 JV4517.Superseded values are not recommended for survey control.
 JV4517
 JV4517.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4517.See file dsdata.pdf to determine how the superseded data were derived.
 JV4517
 JV4517_MARKER: I = METAL ROD
 JV4517_SETTING: 0 = UNSPECIFIED SETTING
 JV4517_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4517
 JV4517  HISTORY     - Date     Condition        Report By
 JV4517  HISTORY     - 1969     MONUMENTED       WSSC
 JV4517
 JV4517                          STATION DESCRIPTION
 JV4517
 JV4517'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4517'THE STATION IS ABOUT 4-1/4 MILES WEST OF DARNSTOWN AND 1-1/2
 JV4517'MILES SOUTH OF DAWSONVILLE.
 JV4517'
 JV4517'THE STATION IS LOCATED ON THE SOUTHEAST CORNER OF SUGARLAND
 JV4517'ROAD AND REDDICK ROAD.
 JV4517'
 JV4517'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4517'AND IS FLUSH WITH THE SURFACE.  IT IS 5.93 FEET SOUTHWEST OF
 JV4517'POWER LINE POLE 622910, 4.65 FEET NORTH OF A NAIL IN A FENCE
 JV4517'POST, 63.28 FEET EAST OF A NAIL IN A FENCE POST, 40.37 FEET
 JV4517'SOUTHWEST OF A NAIL IN A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6007 ***********************************************************************
 JV6007  DESIGNATION -  17105 WSSC 1969
 JV6007  PID         -  JV6007
 JV6007  STATE/COUNTY-  MD/MONTGOMERY
 JV6007  COUNTRY     -  US
 JV6007  USGS QUAD   -  BELTSVILLE (2016)
 JV6007
 JV6007                         *CURRENT SURVEY CONTROL
 JV6007  ______________________________________________________________________
 JV6007* NAD 83(1991) POSITION- 39 04 03.66549(N) 076 59 09.56083(W)   ADJUSTED
 JV6007* NAVD 88 ORTHO HEIGHT -   119.8   (meters)      393.    (feet) VERTCON3
 JV6007  ______________________________________________________________________
 JV6007  GEOID HEIGHT    -        -31.997 (meters)                     GEOID18
 JV6007  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 JV6007  HORZ ORDER      -  SECOND
 JV6007
 JV6007.The horizontal coordinates were established by classical geodetic methods
 JV6007.and adjusted by the National Geodetic Survey in January 1992.
 JV6007
 JV6007.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6007.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6007
 JV6007.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6007.GEOID18 height accuracy estimate available here.
 JV6007
 JV6007.Click photographs - Photos may exist for this station.
 JV6007
 JV6007.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6007
 JV6007. The following values were computed from the NAD 83(1991) position.
 JV6007
 JV6007;                    North         East     Units Scale Factor Converg.
 JV6007;SPC MD       -   155,520.064   401,212.501   MT  0.99995544   +0 00 31.7
 JV6007;SPC MD       -   510,235.41  1,316,311.35   sFT  0.99995544   +0 00 31.7
 JV6007;UTM  18      - 4,326,164.768   328,186.531   MT  0.99996350   -1 15 07.0
 JV6007
 JV6007!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6007!SPC MD       -   0.99998623  x   0.99995544  =   0.99994167
 JV6007!UTM  18      -   0.99998623  x   0.99996350  =   0.99994973
 JV6007
 JV6007:                Primary Azimuth Mark                     Grid Az
 JV6007:SPC MD       -  ELDORADO                                 189 17 01.6
 JV6007:UTM  18      -  ELDORADO                                 190 32 40.3
 JV6007
 JV6007_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2818626164(NAD 83)
 JV6007
 JV6007|---------------------------------------------------------------------|
 JV6007| PID    Reference Object                     Distance      Geod. Az  |
 JV6007|                                                           dddmmss.s |
 JV6007| JV5946 ELDORADO                            APPROX. 3.1 KM 1891733.3 |
 JV6007|---------------------------------------------------------------------|
 JV6007
 JV6007                          SUPERSEDED SURVEY CONTROL
 JV6007
 JV6007  NAD 83(1986)-  39 04 03.66475(N)    076 59 09.57111(W) AD(       ) 2
 JV6007  NAD 27      -  39 04 03.27319(N)    076 59 10.65609(W) AD(       ) 2
 JV6007  NGVD 29 (07/19/86)  120.0    (m)          394.     (f) VERT ANG       
 JV6007
 JV6007.Superseded values are not recommended for survey control.
 JV6007
 JV6007.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6007.See file dsdata.pdf to determine how the superseded data were derived.
 JV6007
 JV6007_MARKER: I = METAL ROD
 JV6007_SETTING: 0 = UNSPECIFIED SETTING
 JV6007_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6007
 JV6007  HISTORY     - Date     Condition        Report By
 JV6007  HISTORY     - 1969     MONUMENTED       WSSC
 JV6007  HISTORY     - 20061223 MARK NOT FOUND   INDIV
 JV6007
 JV6007                          STATION DESCRIPTION
 JV6007
 JV6007'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6007'THE STATION IS ABOUT 2-1/2 MILES WEST OF CALVERTON AND 1-1/2
 JV6007'MILES SOUTHWEST OF FAIRLAND.
 JV6007'
 JV6007'THE STATION IS LOCATED IN THE CENTERLINE OF TAMARACK ROAD, 50
 JV6007'FEET SOUTH OF EAST RANDOLPH ROAD.
 JV6007'
 JV6007'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV6007'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 37.09 FEET SOUTHEAST
 JV6007'OF POLE NO. M-8939, 25.00 FEET EAST OF THE CENTER OF A FIRE
 JV6007'HYDRANT, 84.18 FEET NORTHEAST OF THE SOUTHEAST CORNER OF HOUSE
 JV6007'12814 AND 9.95 FEET WEST OF THE CENTERLINE OF A GAS BOX.
 JV6007
 JV6007                          STATION RECOVERY (2006)
 JV6007
 JV6007'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2006 (EJG)
 JV6007'MARK FOUND IN GOOD CONDITION
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6005 ***********************************************************************
 JV6005  DESIGNATION -  17106 WSSC 1969
 JV6005  PID         -  JV6005
 JV6005  STATE/COUNTY-  MD/MONTGOMERY
 JV6005  COUNTRY     -  US
 JV6005  USGS QUAD   -  BELTSVILLE (2016)
 JV6005
 JV6005                         *CURRENT SURVEY CONTROL
 JV6005  ______________________________________________________________________
 JV6005* NAD 83(1991) POSITION- 39 04 16.10690(N) 076 58 47.21978(W)   ADJUSTED
 JV6005* NAVD 88 ORTHO HEIGHT -   114.3   (meters)      375.    (feet) VERTCON3
 JV6005  ______________________________________________________________________
 JV6005  GEOID HEIGHT    -        -32.006 (meters)                     GEOID18
 JV6005  LAPLACE CORR    -         -3.21  (seconds)                    DEFLEC18
 JV6005  HORZ ORDER      -  SECOND
 JV6005
 JV6005.The horizontal coordinates were established by classical geodetic methods
 JV6005.and adjusted by the National Geodetic Survey in January 1992.
 JV6005
 JV6005.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6005.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6005
 JV6005.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6005.GEOID18 height accuracy estimate available here.
 JV6005
 JV6005.Click photographs - Photos may exist for this station.
 JV6005
 JV6005.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6005
 JV6005. The following values were computed from the NAD 83(1991) position.
 JV6005
 JV6005;                    North         East     Units Scale Factor Converg.
 JV6005;SPC MD       -   155,903.816   401,749.470   MT  0.99995564   +0 00 45.7
 JV6005;SPC MD       -   511,494.44  1,318,073.05   sFT  0.99995564   +0 00 45.7
 JV6005;UTM  18      - 4,326,536.614   328,731.817   MT  0.99996119   -1 14 53.3
 JV6005
 JV6005!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6005!SPC MD       -   0.99998709  x   0.99995564  =   0.99994273
 JV6005!UTM  18      -   0.99998709  x   0.99996119  =   0.99994828
 JV6005
 JV6005_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2873126536(NAD 83)
 JV6005
 JV6005                          SUPERSEDED SURVEY CONTROL
 JV6005
 JV6005  NAD 83(1986)-  39 04 16.10614(N)    076 58 47.23004(W) AD(       ) 2
 JV6005  NAD 27      -  39 04 15.71472(N)    076 58 48.31568(W) AD(       ) 2
 JV6005  NGVD 29 (07/19/86)  114.5    (m)          376.     (f) VERT ANG       
 JV6005
 JV6005.Superseded values are not recommended for survey control.
 JV6005
 JV6005.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6005.See file dsdata.pdf to determine how the superseded data were derived.
 JV6005
 JV6005_MARKER: I = METAL ROD
 JV6005_SETTING: 0 = UNSPECIFIED SETTING
 JV6005_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6005
 JV6005  HISTORY     - Date     Condition        Report By
 JV6005  HISTORY     - 1969     MONUMENTED       WSSC
 JV6005  HISTORY     - 20061223 MARK NOT FOUND   INDIV
 JV6005
 JV6005                          STATION DESCRIPTION
 JV6005
 JV6005'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6005'THE STATION IS ABOUT 2-1/2 MILES WEST OF CALVERTON AND 1-1/2
 JV6005'MILES SOUTHWEST OF FAIRLAND.
 JV6005'
 JV6005'TO REACH THE STATION FROM THE INTERSECTION OF TAMARACK ROAD
 JV6005'AND EAST RANDOLPH ROAD, GO NORTHWEST ON TAMARACK ROAD FOR .42
 JV6005'MILES TO A CURVE IN THE ROAD AND THE STATION IS ON THE LEFT.
 JV6005'
 JV6005'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV6005'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 6.06 FEET WEST
 JV6005'OF THE CENTER OF A FIRE HYDRANT, 84.56 FEET NORTH OF C AND P
 JV6005'POLE NO. 12642 AND 52.42 FEET SOUTHEAST OF THE SOUTHEAST CORNER
 JV6005'OF A BRICK WALL ON HOUSE 13108.
 JV6005
 JV6005                          STATION RECOVERY (2006)
 JV6005
 JV6005'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2006 (EJG)
 JV6005'MARK NOT FOUND
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5998 ***********************************************************************
 JV5998  DESIGNATION -  17107 WSSC 1969
 JV5998  PID         -  JV5998
 JV5998  STATE/COUNTY-  MD/MONTGOMERY
 JV5998  COUNTRY     -  US
 JV5998  USGS QUAD   -  BELTSVILLE (2016)
 JV5998
 JV5998                         *CURRENT SURVEY CONTROL
 JV5998  ______________________________________________________________________
 JV5998* NAD 83(1991) POSITION- 39 03 45.93688(N) 076 57 45.35910(W)   ADJUSTED
 JV5998* NAVD 88 ORTHO HEIGHT -   116.8   (meters)      383.    (feet) VERTCON3
 JV5998  ______________________________________________________________________
 JV5998  GEOID HEIGHT    -        -32.038 (meters)                     GEOID18
 JV5998  LAPLACE CORR    -         -3.27  (seconds)                    DEFLEC18
 JV5998  HORZ ORDER      -  SECOND
 JV5998
 JV5998.The horizontal coordinates were established by classical geodetic methods
 JV5998.and adjusted by the National Geodetic Survey in January 1992.
 JV5998
 JV5998.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5998.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5998
 JV5998.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5998.GEOID18 height accuracy estimate available here.
 JV5998
 JV5998.Click photographs - Photos may exist for this station.
 JV5998
 JV5998.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5998
 JV5998. The following values were computed from the NAD 83(1991) position.
 JV5998
 JV5998;                    North         East     Units Scale Factor Converg.
 JV5998;SPC MD       -   154,973.944   403,236.840   MT  0.99995516   +0 01 24.5
 JV5998;SPC MD       -   508,443.68  1,322,952.87   sFT  0.99995516   +0 01 24.5
 JV5998;UTM  18      - 4,325,574.241   330,198.372   MT  0.99995503   -1 14 13.4
 JV5998
 JV5998!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5998!SPC MD       -   0.99998670  x   0.99995516  =   0.99994186
 JV5998!UTM  18      -   0.99998670  x   0.99995503  =   0.99994173
 JV5998
 JV5998:                Primary Azimuth Mark                     Grid Az
 JV5998:SPC MD       -  ELDORADO                                 225 12 58.2
 JV5998:UTM  18      -  ELDORADO                                 226 28 36.1
 JV5998
 JV5998_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3019825574(NAD 83)
 JV5998
 JV5998|---------------------------------------------------------------------|
 JV5998| PID    Reference Object                     Distance      Geod. Az  |
 JV5998|                                                           dddmmss.s |
 JV5998| JV5996 17108 WSSC 1969                     280.022 METERS 03154     |
 JV5998| JV5946 ELDORADO                            APPROX. 3.6 KM 2251422.7 |
 JV5998| JV4292 COLESVILLE METH CH SPIRE            APPROX. 4.0 KM 2870252.5 |
 JV5998|---------------------------------------------------------------------|
 JV5998
 JV5998                          SUPERSEDED SURVEY CONTROL
 JV5998
 JV5998  NAD 83(1986)-  39 03 45.93606(N)    076 57 45.36939(W) AD(       ) 2
 JV5998  NAD 27      -  39 03 45.54385(N)    076 57 46.45713(W) AD(       ) 2
 JV5998  NGVD 29 (07/19/86)  117.0    (m)          384.     (f) VERT ANG       
 JV5998
 JV5998.Superseded values are not recommended for survey control.
 JV5998
 JV5998.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5998.See file dsdata.pdf to determine how the superseded data were derived.
 JV5998
 JV5998_MARKER: I = METAL ROD
 JV5998_SETTING: 0 = UNSPECIFIED SETTING
 JV5998_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5998
 JV5998  HISTORY     - Date     Condition        Report By
 JV5998  HISTORY     - 1969     MONUMENTED       WSSC
 JV5998
 JV5998                          STATION DESCRIPTION
 JV5998
 JV5998'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5998'THE STATION IS ABOUT 1-1/2 MILES SOUTH OF FAIRLAND AND 2 MILES
 JV5998'NORTHEAST OF WHITE OAK.
 JV5998'
 JV5998'THE STATION IS LOCATED IN THE CENTERLINE OF ROUTE 29 ABOUT
 JV5998'100 FEET NORTH OF COLESVILLE-BELTSVILLE ROAD.
 JV5998'
 JV5998'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5998'AND IS FLUSH WITH THE SURFACE.  IT IS IN THE GRASS MEDIAN AND
 JV5998'IS 9.04 FEET SOUTHEAST OF THE NORTHEAST CORNER OF A CONCRETE
 JV5998'SPILLWAY, 14.56 FEET NORTHEAST OF THE NORTHEAST CORNER OF A
 JV5998'CONCRETE HEADWALL, AND 13.68 FEET NORTHWEST OF THE NORTHWEST
 JV5998'CORNER OF A CONCRETE BASE FOR A LIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5996 ***********************************************************************
 JV5996  DESIGNATION -  17108 WSSC 1969
 JV5996  PID         -  JV5996
 JV5996  STATE/COUNTY-  MD/MONTGOMERY
 JV5996  COUNTRY     -  US
 JV5996  USGS QUAD   -  BELTSVILLE (2016)
 JV5996
 JV5996                         *CURRENT SURVEY CONTROL
 JV5996  ______________________________________________________________________
 JV5996* NAD 83(1991) POSITION- 39 03 53.64609(N) 076 57 39.20445(W)   ADJUSTED
 JV5996* NAVD 88 ORTHO HEIGHT -   118.5   (meters)      389.    (feet) VERTCON3
 JV5996  ______________________________________________________________________
 JV5996  GEOID HEIGHT    -        -32.040 (meters)                     GEOID18
 JV5996  LAPLACE CORR    -         -3.30  (seconds)                    DEFLEC18
 JV5996  HORZ ORDER      -  SECOND
 JV5996
 JV5996.The horizontal coordinates were established by classical geodetic methods
 JV5996.and adjusted by the National Geodetic Survey in January 1992.
 JV5996
 JV5996.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5996.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5996
 JV5996.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5996.GEOID18 height accuracy estimate available here.
 JV5996
 JV5996.Click photographs - Photos may exist for this station.
 JV5996
 JV5996.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5996
 JV5996. The following values were computed from the NAD 83(1991) position.
 JV5996
 JV5996;                    North         East     Units Scale Factor Converg.
 JV5996;SPC MD       -   155,211.732   403,384.699   MT  0.99995528   +0 01 28.4
 JV5996;SPC MD       -   509,223.82  1,323,437.97   sFT  0.99995528   +0 01 28.4
 JV5996;UTM  18      - 4,325,808.718   330,351.427   MT  0.99995439   -1 14 09.8
 JV5996
 JV5996!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5996!SPC MD       -   0.99998644  x   0.99995528  =   0.99994172
 JV5996!UTM  18      -   0.99998644  x   0.99995439  =   0.99994083
 JV5996
 JV5996:                Primary Azimuth Mark                     Grid Az
 JV5996:SPC MD       -  BELTSVILLE DA RSCH CTR N TANK            113 26 08.0
 JV5996:UTM  18      -  BELTSVILLE DA RSCH CTR N TANK            114 41 46.2
 JV5996
 JV5996_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3035125808(NAD 83)
 JV5996
 JV5996|---------------------------------------------------------------------|
 JV5996| PID    Reference Object                     Distance      Geod. Az  |
 JV5996|                                                           dddmmss.s |
 JV5996| JV5937 BELTSVILLE DA RSCH CTR N TANK       APPROX. 8.0 KM 1132736.4 |
 JV5996| JV5998 17107 WSSC 1969                     280.022 METERS 21154     |
 JV5996|---------------------------------------------------------------------|
 JV5996
 JV5996                          SUPERSEDED SURVEY CONTROL
 JV5996
 JV5996  NAD 83(1986)-  39 03 53.64525(N)    076 57 39.21473(W) AD(       ) 2
 JV5996  NAD 27      -  39 03 53.25299(N)    076 57 40.30267(W) AD(       ) 2
 JV5996  NGVD 29 (07/19/86)  118.7    (m)          389.     (f) VERT ANG       
 JV5996
 JV5996.Superseded values are not recommended for survey control.
 JV5996
 JV5996.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5996.See file dsdata.pdf to determine how the superseded data were derived.
 JV5996
 JV5996_MARKER: I = METAL ROD
 JV5996_SETTING: 0 = UNSPECIFIED SETTING
 JV5996_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5996
 JV5996  HISTORY     - Date     Condition        Report By
 JV5996  HISTORY     - 1969     MONUMENTED       WSSC
 JV5996
 JV5996                          STATION DESCRIPTION
 JV5996
 JV5996'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5996'THE STATION IS ABOUT 1 MILE SOUTH OF FAIRLAND AND 2-1/2 MILES
 JV5996'NORTHEAST OF WHITE OAK.
 JV5996'
 JV5996'THE STATION IS ON THE EAST SIDE ROUTE 29 AT THE INTERSECTION
 JV5996'WITH SHANDALE ROAD.
 JV5996'
 JV5996'THE MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 JV5996'IS 2 INCHES BELOW THE SURFACE.  IT IS IN THE GRASS STRIP BETWEEN
 JV5996'THE NORTHBOUND LANE OF ROUTE 29 AND THE SERVICE DRIVE LEADING TO
 JV5996'CALVERTON SUBDIVISION AND IS 25.68 FEET NORTHWEST OF PEPCO POLE
 JV5996'747021, 58.03 FEET WEST OF THE NORTHWEST CORNER OF A CONCRETE
 JV5996'WALK, 25.4 FEET WEST OF THE WEST EDGE OF THE SERVICE DRIVE AND
 JV5996'28.3 FEET EAST OF EAST EDGE OF ROUTE 29.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6009 ***********************************************************************
 JV6009  DESIGNATION -  17109 WSSC 1969
 JV6009  PID         -  JV6009
 JV6009  STATE/COUNTY-  MD/MONTGOMERY
 JV6009  COUNTRY     -  US
 JV6009  USGS QUAD   -  BELTSVILLE (2016)
 JV6009
 JV6009                         *CURRENT SURVEY CONTROL
 JV6009  ______________________________________________________________________
 JV6009* NAD 83(1991) POSITION- 39 03 20.32775(N) 076 59 39.20291(W)   ADJUSTED
 JV6009* NAVD 88 ORTHO HEIGHT -   125.7   (meters)      412.    (feet) VERTCON3
 JV6009  ______________________________________________________________________
 JV6009  GEOID HEIGHT    -        -31.989 (meters)                     GEOID18
 JV6009  LAPLACE CORR    -         -3.11  (seconds)                    DEFLEC18
 JV6009  HORZ ORDER      -  SECOND
 JV6009
 JV6009.The horizontal coordinates were established by classical geodetic methods
 JV6009.and adjusted by the National Geodetic Survey in January 1992.
 JV6009
 JV6009.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6009.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6009
 JV6009.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6009.GEOID18 height accuracy estimate available here.
 JV6009
 JV6009.Click photographs - Photos may exist for this station.
 JV6009
 JV6009.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6009
 JV6009. The following values were computed from the NAD 83(1991) position.
 JV6009
 JV6009;                    North         East     Units Scale Factor Converg.
 JV6009;SPC MD       -   154,183.599   400,500.023   MT  0.99995476   +0 00 13.1
 JV6009;SPC MD       -   505,850.69  1,313,973.83   sFT  0.99995476   +0 00 13.1
 JV6009;UTM  18      - 4,324,844.288   327,444.816   MT  0.99996664   -1 15 24.6
 JV6009
 JV6009!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6009!SPC MD       -   0.99998530  x   0.99995476  =   0.99994006
 JV6009!UTM  18      -   0.99998530  x   0.99996664  =   0.99995194
 JV6009
 JV6009:                Primary Azimuth Mark                     Grid Az
 JV6009:SPC MD       -  ELDORADO                                 172 53 06.4
 JV6009:UTM  18      -  ELDORADO                                 174 08 44.1
 JV6009
 JV6009_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2744424844(NAD 83)
 JV6009
 JV6009|---------------------------------------------------------------------|
 JV6009| PID    Reference Object                     Distance      Geod. Az  |
 JV6009|                                                           dddmmss.s |
 JV6009| JV6008 17110                               300.012 METERS 01057     |
 JV6009| JV5946 ELDORADO                            APPROX. 1.7 KM 1725319.5 |
 JV6009|---------------------------------------------------------------------|
 JV6009
 JV6009                          SUPERSEDED SURVEY CONTROL
 JV6009
 JV6009  NAD 83(1986)-  39 03 20.32703(N)    076 59 39.21328(W) AD(       ) 2
 JV6009  NAD 27      -  39 03 19.93490(N)    076 59 40.29747(W) AD(       ) 2
 JV6009  NGVD 29 (07/19/86)  125.9    (m)          413.     (f) VERT ANG       
 JV6009
 JV6009.Superseded values are not recommended for survey control.
 JV6009
 JV6009.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6009.See file dsdata.pdf to determine how the superseded data were derived.
 JV6009
 JV6009_MARKER: I = METAL ROD
 JV6009_SETTING: 0 = UNSPECIFIED SETTING
 JV6009_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6009
 JV6009  HISTORY     - Date     Condition        Report By
 JV6009  HISTORY     - 1969     MONUMENTED       WSSC
 JV6009  HISTORY     - 20061223 MARK NOT FOUND   INDIV
 JV6009
 JV6009                          STATION DESCRIPTION
 JV6009
 JV6009'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6009'THE STATION IS ABOUT 1 MILE NORTH OF WHITE OAK AND 1/4 MILE
 JV6009'SOUTH OF EAST SPRINGBROOK.
 JV6009'
 JV6009'THE STATION IS LOCATED ON THE NORTH SIDE OF JACKSON ROAD AT
 JV6009'THE INTERSECTION OF KERWOOD ROAD.
 JV6009'
 JV6009'THE MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND IS
 JV6009'3 INCHES BELOW THE SURFACE.  IT IS 44.40 FEET WEST OF POLE
 JV6009'76976, 22.35 FEET NORTH OF THE CENTER OF A GAS VALVE, 6.35
 JV6009'FEET EAST OF A NAIL IN THE TOP OF A POST AND JUST EAST OF THE
 JV6009'DRIVE LEADING TO WHITE OAK JUNIOR HIGH SCHOOL.
 JV6009
 JV6009                          STATION RECOVERY (2006)
 JV6009
 JV6009'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2006 (EJG)
 JV6009'MARK NOT FOUND
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1193 ***********************************************************************
 HV1193  DESIGNATION -  1711 WSSC
 HV1193  PID         -  HV1193
 HV1193  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1193  COUNTRY     -  US
 HV1193  USGS QUAD   -  LANHAM (2016)
 HV1193
 HV1193                         *CURRENT SURVEY CONTROL
 HV1193  ______________________________________________________________________
 HV1193* NAD 83(1986) POSITION- 38 55 06.     (N) 076 51 31.     (W)   SCALED
 HV1193* NAVD 88 ORTHO HEIGHT -    52.14  (+/-2cm)      171.1   (feet) VERTCON3
 HV1193  ______________________________________________________________________
 HV1193  GEOID HEIGHT    -        -32.424 (meters)                     GEOID18
 HV1193  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1193
 HV1193.The horizontal coordinates were scaled from a map and have
 HV1193.an estimated accuracy of +/- 6 seconds.
 HV1193
 HV1193.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1193.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1193
 HV1193.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1193.GEOID18 height accuracy estimate available here.
 HV1193
 HV1193.The vertical order pertains to the NGVD 29 superseded value.
 HV1193
 HV1193.Click photographs - Photos may exist for this station.
 HV1193
 HV1193;                    North         East    Units  Estimated Accuracy
 HV1193;SPC MD       -   138,950.      412,260.      MT  (+/- 180 meters Scaled)
 HV1193
 HV1193_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ388093(NAD 83)
 HV1193
 HV1193                          SUPERSEDED SURVEY CONTROL
 HV1193
 HV1193  NGVD 29 (11/26/84)   52.382  (m)          171.86   (f) ADJUSTED    2 0
 HV1193
 HV1193.Superseded values are not recommended for survey control.
 HV1193
 HV1193.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1193.See file dsdata.pdf to determine how the superseded data were derived.
 HV1193
 HV1193_MARKER: DD = SURVEY DISK
 HV1193_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1193_STAMPING: 1711
 HV1193_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1193
 HV1193  HISTORY     - Date     Condition        Report By
 HV1193  HISTORY     - UNK      MONUMENTED       WSSC
 HV1193  HISTORY     - 1944     GOOD             WSSC
 HV1193
 HV1193                          STATION DESCRIPTION
 HV1193
 HV1193'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1193'0.3 MI NW FROM BRIGHTSEAT.
 HV1193'ON THE OLD LANDOVER-MARLBORO PIKE, 300 FEET EAST OF THE ROAD
 HV1193'LEADING NORTH TO ARDMORE, 36.5 FEET NORTH OF THE CENTERLINE OF
 HV1193'THE ROAD, AT THE BOTTOM OF A BANK, AND NEAR TWO 30-INCH OAK TREES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6008 ***********************************************************************
 JV6008  DESIGNATION -  17110
 JV6008  PID         -  JV6008
 JV6008  STATE/COUNTY-  MD/MONTGOMERY
 JV6008  COUNTRY     -  US
 JV6008  USGS QUAD   -  BELTSVILLE (2016)
 JV6008
 JV6008                         *CURRENT SURVEY CONTROL
 JV6008  ______________________________________________________________________
 JV6008* NAD 83(1991) POSITION- 39 03 29.87917(N) 076 59 36.83182(W)   ADJUSTED
 JV6008* NAVD 88 ORTHO HEIGHT -   108.4   (meters)      356.    (feet) VERTCON3
 JV6008  ______________________________________________________________________
 JV6008  GEOID HEIGHT    -        -31.989 (meters)                     GEOID18
 JV6008  LAPLACE CORR    -         -3.14  (seconds)                    DEFLEC18
 JV6008  HORZ ORDER      -  SECOND
 JV6008
 JV6008.The horizontal coordinates were established by classical geodetic methods
 JV6008.and adjusted by the National Geodetic Survey in January 1992.
 JV6008
 JV6008.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6008.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6008
 JV6008.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6008.GEOID18 height accuracy estimate available here.
 JV6008
 JV6008.Click photographs - Photos may exist for this station.
 JV6008
 JV6008.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6008
 JV6008. The following values were computed from the NAD 83(1991) position.
 JV6008
 JV6008;                    North         East     Units Scale Factor Converg.
 JV6008;SPC MD       -   154,478.136   400,557.010   MT  0.99995490   +0 00 14.5
 JV6008;SPC MD       -   506,817.02  1,314,160.79   sFT  0.99995490   +0 00 14.5
 JV6008;UTM  18      - 4,325,137.503   327,508.269   MT  0.99996637   -1 15 23.3
 JV6008
 JV6008!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6008!SPC MD       -   0.99998801  x   0.99995490  =   0.99994291
 JV6008!UTM  18      -   0.99998801  x   0.99996637  =   0.99995438
 JV6008
 JV6008_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2750825137(NAD 83)
 JV6008
 JV6008                          SUPERSEDED SURVEY CONTROL
 JV6008
 JV6008  NAD 83(1986)-  39 03 29.87845(N)    076 59 36.84218(W) AD(       ) 2
 JV6008  NAD 27      -  39 03 29.48645(N)    076 59 37.92639(W) AD(       ) 2
 JV6008  NGVD 29 (07/19/86)  108.6    (m)          356.     (f) VERT ANG       
 JV6008
 JV6008.Superseded values are not recommended for survey control.
 JV6008
 JV6008.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6008.See file dsdata.pdf to determine how the superseded data were derived.
 JV6008
 JV6008_MARKER: B = BOLT
 JV6008_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6008_SP_SET: SPILLWAY
 JV6008_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6008_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6008+SATELLITE: SATELLITE OBSERVATIONS - April 19, 2006
 JV6008
 JV6008  HISTORY     - Date     Condition        Report By
 JV6008  HISTORY     - 1969     MONUMENTED       WSSC
 JV6008  HISTORY     - 20040103 GOOD             GEOCAC
 JV6008  HISTORY     - 20050405 GOOD             USPSQD
 JV6008  HISTORY     - 20060419 GOOD             NGS
 JV6008  HISTORY     - 20061223 MARK NOT FOUND   INDIV
 JV6008
 JV6008                          STATION DESCRIPTION
 JV6008
 JV6008'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6008'THE STATION IS ABOUT 1 MILE NORTH OF WHITE OAK AND 1/4 MILE SOUTH
 JV6008'OF EAST SPRINGBROOK.
 JV6008'
 JV6008'TO REACH THE STATION FROM THE INTERSECTION OF LIMA DRIVE AND
 JV6008'BRANTFORD DRIVE, GO .1 MILE NORTH OF LIME DRIVE TO HOUSE 12310
 JV6008'AND THE STATION IS ON THE RIGHT.
 JV6008'
 JV6008'THE STATION MARK IS A BRASS BOLT SET IN THE LOW POINT OF A
 JV6008'CONCRETE SPILLWAY.
 JV6008
 JV6008                          STATION RECOVERY (2004)
 JV6008
 JV6008'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV6008'FOUND AS DESCRIBED APPROXIMATELY OPPOSITE SOLE BASEMENT WINDOW IN
 JV6008'RESIDENCE AT 12310 LIMA DRIVE AND IN A JOINT IN THE CONCRETE SPILLWAY.
 JV6008'
 JV6008
 JV6008                          STATION RECOVERY (2005)
 JV6008
 JV6008'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6008'RECOVERED IN GOOD CONDITION.
 JV6008
 JV6008                          STATION RECOVERY (2006)
 JV6008
 JV6008'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV6008'MARK IS NOT SUITABLE FOR GPS.  A VERY LARGE TREE OVERHANGS THE
 JV6008'STATION.
 JV6008
 JV6008                          STATION RECOVERY (2006)
 JV6008
 JV6008'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2006 (EJG)
 JV6008'MARK FOUND IN GOOD CONDITION
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4531 ***********************************************************************
 JV4531  DESIGNATION -  17111 WSSC 1969
 JV4531  PID         -  JV4531
 JV4531  STATE/COUNTY-  MD/MONTGOMERY
 JV4531  COUNTRY     -  US
 JV4531  USGS QUAD   -  STERLING (2019)
 JV4531
 JV4531                         *CURRENT SURVEY CONTROL
 JV4531  ______________________________________________________________________
 JV4531* NAD 83(1993) POSITION- 39 07 10.03418(N) 077 29 13.57061(W)   ADJUSTED
 JV4531* NAVD 88 ORTHO HEIGHT -    70.9   (meters)      233.    (feet) VERTCON3
 JV4531  ______________________________________________________________________
 JV4531  GEOID HEIGHT    -        -32.277 (meters)                     GEOID18
 JV4531  LAPLACE CORR    -          5.07  (seconds)                    DEFLEC18
 JV4531  HORZ ORDER      -  SECOND
 JV4531
 JV4531.The horizontal coordinates were established by classical geodetic methods
 JV4531.and adjusted by the National Geodetic Survey in November 1994.
 JV4531
 JV4531.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4531.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4531
 JV4531.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4531.GEOID18 height accuracy estimate available here.
 JV4531
 JV4531.Click photographs - Photos may exist for this station.
 JV4531
 JV4531.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4531
 JV4531. The following values were computed from the NAD 83(1993) position.
 JV4531
 JV4531;                    North         East     Units Scale Factor Converg.
 JV4531;SPC MD       -   161,379.368   357,876.998   MT  0.99995886   -0 18 20.6
 JV4531;SPC MD       -   529,458.81  1,174,134.78   sFT  0.99995886   -0 18 20.6
 JV4531;UTM  18      - 4,332,978.068   284,986.073   MT  1.00016928   -1 34 11.3
 JV4531
 JV4531!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4531!SPC MD       -   0.99999394  x   0.99995886  =   0.99995280
 JV4531!UTM  18      -   0.99999394  x   1.00016928  =   1.00016322
 JV4531
 JV4531:                Primary Azimuth Mark                     Grid Az
 JV4531:SPC MD       -  ELMER                                    015 14 06.6
 JV4531:UTM  18      -  ELMER                                    016 29 57.3
 JV4531
 JV4531_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8498632978(NAD 83)
 JV4531
 JV4531|---------------------------------------------------------------------|
 JV4531| PID    Reference Object                     Distance      Geod. Az  |
 JV4531|                                                           dddmmss.s |
 JV4531| JV4545 ELMER                               APPROX. 0.9 KM 0145546.0 |
 JV4531|---------------------------------------------------------------------|
 JV4531
 JV4531                          SUPERSEDED SURVEY CONTROL
 JV4531
 JV4531  NAD 83(1991)-  39 07 10.03512(N)    077 29 13.57164(W) AD(       ) 2
 JV4531  NAD 83(1986)-  39 07 10.03368(N)    077 29 13.58090(W) AD(       ) 2
 JV4531  NAD 27      -  39 07 09.65052(N)    077 29 14.61142(W) AD(       ) 2
 JV4531  NGVD 29 (07/19/86)   71.1    (m)          233.     (f) VERT ANG       
 JV4531
 JV4531.Superseded values are not recommended for survey control.
 JV4531
 JV4531.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4531.See file dsdata.pdf to determine how the superseded data were derived.
 JV4531
 JV4531_MARKER: I = METAL ROD
 JV4531_SETTING: 0 = UNSPECIFIED SETTING
 JV4531_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4531
 JV4531  HISTORY     - Date     Condition        Report By
 JV4531  HISTORY     - 1969     MONUMENTED       WSSC
 JV4531
 JV4531                          STATION DESCRIPTION
 JV4531
 JV4531'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4531'THE STATION IS ABOUT 1/2 MILE SOUTH OF ELMER AND 1/2 MILE NORTH
 JV4531'OF THE POTOMAC RIVER.
 JV4531'
 JV4531'TO REACH THE STATION FROM THE INTERSECTION OF ELMER SCHOOL ROAD
 JV4531'AND WHITES FERRY ROAD (ROUTE 107) GO SOUTH ON ELMER SCHOOL ROAD
 JV4531'FOR 3.25 MILES TO A DIRT ROAD, LEFT (RIVER ROAD) CONTINUE AHEAD
 JV4531'FOR .1 MILE TO A SHARP CURVE IN THE ROAD AND THE STATION IS ON
 JV4531'THE LEFT.
 JV4531'
 JV4531'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4531'AND IS FLUSH WITH THE SURFACE.  IT IS 41.15 FEET WEST OF A NAIL
 JV4531'IN THE TOP OF A FENCE POST, 47.58 FEET NORTH OF POWER LINE POLE
 JV4531'115, 73.97 FEET NORTHWEST OF A 15 INCH TWIN WALNUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4570 ***********************************************************************
 JV4570  DESIGNATION -  17112 WSSC 1969
 JV4570  PID         -  JV4570
 JV4570  STATE/COUNTY-  MD/MONTGOMERY
 JV4570  COUNTRY     -  US
 JV4570  USGS QUAD   -  POOLESVILLE (2016)
 JV4570
 JV4570                         *CURRENT SURVEY CONTROL
 JV4570  ______________________________________________________________________
 JV4570* NAD 83(1993) POSITION- 39 07 58.13503(N) 077 26 52.50479(W)   ADJUSTED
 JV4570* NAVD 88 ORTHO HEIGHT -    98.5   (meters)      323.    (feet) VERTCON3
 JV4570  ______________________________________________________________________
 JV4570  GEOID HEIGHT    -        -32.192 (meters)                     GEOID18
 JV4570  LAPLACE CORR    -          5.70  (seconds)                    DEFLEC18
 JV4570  HORZ ORDER      -  SECOND
 JV4570
 JV4570.The horizontal coordinates were established by classical geodetic methods
 JV4570.and adjusted by the National Geodetic Survey in November 1994.
 JV4570
 JV4570.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4570.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4570
 JV4570.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4570.GEOID18 height accuracy estimate available here.
 JV4570
 JV4570.Click photographs - Photos may exist for this station.
 JV4570
 JV4570.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4570
 JV4570. The following values were computed from the NAD 83(1993) position.
 JV4570
 JV4570;                    North         East     Units Scale Factor Converg.
 JV4570;SPC MD       -   162,845.284   361,272.829   MT  0.99995988   -0 16 52.1
 JV4570;SPC MD       -   534,268.24  1,185,275.94   sFT  0.99995988   -0 16 52.1
 JV4570;UTM  18      - 4,334,368.984   288,414.108   MT  1.00015127   -1 32 43.8
 JV4570
 JV4570!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4570!SPC MD       -   0.99998960  x   0.99995988  =   0.99994948
 JV4570!UTM  18      -   0.99998960  x   1.00015127  =   1.00014087
 JV4570
 JV4570_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8841434368(NAD 83)
 JV4570
 JV4570                          SUPERSEDED SURVEY CONTROL
 JV4570
 JV4570  NAD 83(1991)-  39 07 58.13558(N)    077 26 52.50561(W) AD(       ) 2
 JV4570  NAD 83(1986)-  39 07 58.13458(N)    077 26 52.51510(W) AD(       ) 2
 JV4570  NAD 27      -  39 07 57.75120(N)    077 26 53.54954(W) AD(       ) 2
 JV4570  NGVD 29 (07/19/86)   98.7    (m)          324.     (f) VERT ANG       
 JV4570
 JV4570.Superseded values are not recommended for survey control.
 JV4570
 JV4570.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4570.See file dsdata.pdf to determine how the superseded data were derived.
 JV4570
 JV4570_MARKER: I = METAL ROD
 JV4570_SETTING: 0 = UNSPECIFIED SETTING
 JV4570_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4570
 JV4570  HISTORY     - Date     Condition        Report By
 JV4570  HISTORY     - 1969     MONUMENTED       WSSC
 JV4570
 JV4570                          STATION DESCRIPTION
 JV4570
 JV4570'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4570'THE STATION IS ABOUT 2 MILES SOUTHWEST OF POOLESVILLE AND 2 MILES
 JV4570'EAST OF ELMER.
 JV4570'
 JV4570'THE STATION IS LOCATED AT THE INTERSECTION OF EDWARDS FERRY
 JV4570'ROAD AND WESTERLY ROAD.
 JV4570'
 JV4570'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4570'AND IS 3 INCHES BELOW THE SURFACE.  IT IS ON THE NORTHEAST CORNER
 JV4570'OF THE INTERSECTION AND IS 61.61 FEET NORTHEAST OF A POWER LINE
 JV4570'POLE, 9.68 FEET NORTHEAST OF POWER LINE POLE NO 23058, 15.67
 JV4570'FEET SOUTHEAST OF A NAIL IN A FENCE POST AND 40.22 FEET WEST OF
 JV4570'A NAIL IN A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4340 ***********************************************************************
 JV4340  DESIGNATION -  17113 WSSC 1969
 JV4340  PID         -  JV4340
 JV4340  STATE/COUNTY-  MD/MONTGOMERY
 JV4340  COUNTRY     -  US
 JV4340  USGS QUAD   -  KENSINGTON (2016)
 JV4340
 JV4340                         *CURRENT SURVEY CONTROL
 JV4340  ______________________________________________________________________
 JV4340* NAD 83(1993) POSITION- 39 00 56.43192(N) 077 07 10.23916(W)   ADJUSTED
 JV4340* NAVD 88 ORTHO HEIGHT -   108.6   (meters)      356.    (feet) VERTCON3
 JV4340  ______________________________________________________________________
 JV4340  GEOID HEIGHT    -        -31.810 (meters)                     GEOID18
 JV4340  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 JV4340  HORZ ORDER      -  SECOND
 JV4340
 JV4340.The horizontal coordinates were established by classical geodetic methods
 JV4340.and adjusted by the National Geodetic Survey in November 1994.
 JV4340
 JV4340.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4340.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4340
 JV4340.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4340.GEOID18 height accuracy estimate available here.
 JV4340
 JV4340.Click photographs - Photos may exist for this station.
 JV4340
 JV4340.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4340
 JV4340. The following values were computed from the NAD 83(1993) position.
 JV4340
 JV4340;                    North         East     Units Scale Factor Converg.
 JV4340;SPC MD       -   149,753.129   389,649.978   MT  0.99995282   -0 04 30.0
 JV4340;SPC MD       -   491,315.06  1,278,376.64   sFT  0.99995282   -0 04 30.0
 JV4340;UTM  18      - 4,320,653.334   316,499.566   MT  1.00001464   -1 20 04.8
 JV4340
 JV4340!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4340!SPC MD       -   0.99998796  x   0.99995282  =   0.99994078
 JV4340!UTM  18      -   0.99998796  x   1.00001464  =   1.00000260
 JV4340
 JV4340:                Primary Azimuth Mark                     Grid Az
 JV4340:SPC MD       -  FERNWOOD RM 3                            255 04 38.2
 JV4340:UTM  18      -  FERNWOOD RM 3                            256 20 13.0
 JV4340
 JV4340_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1649920653(NAD 83)
 JV4340
 JV4340|---------------------------------------------------------------------|
 JV4340| PID    Reference Object                     Distance      Geod. Az  |
 JV4340|                                                           dddmmss.s |
 JV4340| JV4363 FERNWOOD RM 3                       APPROX. 1.3 KM 2550008.2 |
 JV4340| JV4343 BETHESDA RAD STA WMAL CEN TWR       APPROX. 2.1 KM 2713345.4 |
 JV4340| JV4355 BETHESDA RAD STA WMAL N TWR         APPROX. 2.1 KM 2734630.0 |
 JV4340| JV4341 17114 WSSC 1969                     467.202 METERS 3402442.3 |
 JV4340|---------------------------------------------------------------------|
 JV4340
 JV4340                          SUPERSEDED SURVEY CONTROL
 JV4340
 JV4340  NAD 83(1991)-  39 00 56.43138(N)    077 07 10.24011(W) AD(       ) 2
 JV4340  NAD 83(1986)-  39 00 56.43121(N)    077 07 10.24989(W) AD(       ) 2
 JV4340  NAD 27      -  39 00 56.03723(N)    077 07 11.32047(W) AD(       ) 2
 JV4340  NGVD 29 (07/19/86)  108.8    (m)          357.     (f) VERT ANG       
 JV4340
 JV4340.Superseded values are not recommended for survey control.
 JV4340
 JV4340.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4340.See file dsdata.pdf to determine how the superseded data were derived.
 JV4340
 JV4340_MARKER: I = METAL ROD
 JV4340_SETTING: 0 = UNSPECIFIED SETTING
 JV4340_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4340
 JV4340  HISTORY     - Date     Condition        Report By
 JV4340  HISTORY     - 1969     MONUMENTED       WSSC
 JV4340
 JV4340                          STATION DESCRIPTION
 JV4340
 JV4340'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4340'THE STATION IS ABOUT 1 MILE SOUTHWEST OF NORTH BETHESDA
 JV4340'GROVE AND 4 MILES SOUTHWEST OF WHEATON.
 JV4340'
 JV4340'THE STATION IS LOCATED IN THE CENTER OF ROUTE 495 (CAPITAL
 JV4340'BELTWAY) AT THE WEST END OF THE BRIDGE OVER OLD GEORGETOWN ROAD.
 JV4340'
 JV4340'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4340'AND IS FLUSH WITH THE GROUND.  IT IS 13.44 FEET SOUTHWEST
 JV4340'OF THE SOUTHWEST CORNER OF THE BRIDGE ON THE WESTBOUND LAND
 JV4340'OF ROUTE 495 AND 14.02 FEET NORTHWEST OF THE NORTHWEST
 JV4340'CORNER OF THE BRIDGE ON THE EASTBOUND LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4341 ***********************************************************************
 JV4341  DESIGNATION -  17114 WSSC 1969
 JV4341  PID         -  JV4341
 JV4341  STATE/COUNTY-  MD/MONTGOMERY
 JV4341  COUNTRY     -  US
 JV4341  USGS QUAD   -  KENSINGTON (2016)
 JV4341
 JV4341                         *CURRENT SURVEY CONTROL
 JV4341  ______________________________________________________________________
 JV4341* NAD 83(1993) POSITION- 39 01 10.70540(N) 077 07 16.75029(W)   ADJUSTED
 JV4341* NAVD 88 ORTHO HEIGHT -   108.2   (meters)      355.    (feet) VERTCON3
 JV4341  ______________________________________________________________________
 JV4341  GEOID HEIGHT    -        -31.804 (meters)                     GEOID18
 JV4341  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 JV4341  HORZ ORDER      -  SECOND
 JV4341
 JV4341.The horizontal coordinates were established by classical geodetic methods
 JV4341.and adjusted by the National Geodetic Survey in November 1994.
 JV4341
 JV4341.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4341.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4341
 JV4341.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4341.GEOID18 height accuracy estimate available here.
 JV4341
 JV4341.Click photographs - Photos may exist for this station.
 JV4341
 JV4341.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4341
 JV4341. The following values were computed from the NAD 83(1993) position.
 JV4341
 JV4341;                    North         East     Units Scale Factor Converg.
 JV4341;SPC MD       -   150,193.477   389,493.929   MT  0.99995299   -0 04 34.1
 JV4341;SPC MD       -   492,759.77  1,277,864.67   sFT  0.99995299   -0 04 34.1
 JV4341;UTM  18      - 4,321,097.033   316,353.225   MT  1.00001530   -1 20 09.3
 JV4341
 JV4341!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4341!SPC MD       -   0.99998802  x   0.99995299  =   0.99994101
 JV4341!UTM  18      -   0.99998802  x   1.00001530  =   1.00000332
 JV4341
 JV4341_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1635321097(NAD 83)
 JV4341
 JV4341                          SUPERSEDED SURVEY CONTROL
 JV4341
 JV4341  NAD 83(1991)-  39 01 10.70488(N)    077 07 16.75122(W) AD(       ) 2
 JV4341  NAD 83(1986)-  39 01 10.70471(N)    077 07 16.76101(W) AD(       ) 2
 JV4341  NAD 27      -  39 01 10.31095(N)    077 07 17.83134(W) AD(       ) 2
 JV4341  NGVD 29 (07/19/86)  108.4    (m)          356.     (f) VERT ANG       
 JV4341
 JV4341.Superseded values are not recommended for survey control.
 JV4341
 JV4341.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4341.See file dsdata.pdf to determine how the superseded data were derived.
 JV4341
 JV4341_MARKER: I = METAL ROD
 JV4341_SETTING: 0 = UNSPECIFIED SETTING
 JV4341_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4341
 JV4341  HISTORY     - Date     Condition        Report By
 JV4341  HISTORY     - 1969     MONUMENTED       WSSC
 JV4341
 JV4341                          STATION DESCRIPTION
 JV4341
 JV4341'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4341'THE STATION IS ABOUT 1 MILE SOUTHWEST OF NORTH BETHESDA
 JV4341'GROVE AND 4 MILES SOUTHWEST OF WHEATON.
 JV4341'
 JV4341'THE STATION IS LOCATED AT THE NORTHWEST CORNER OF OLD
 JV4341'GEORGETOWN ROAD AND LONE OAK DRIVE.
 JV4341'
 JV4341'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4341'AND IS FLUSH WITH THE GROUND.  IT IS 13.55 FEET SOUTH OF A
 JV4341'POWER LINE POLE, 11.54 FEET WEST OF THE CENTER OF A FIRE
 JV4341'HYDRANT, 11.30 FEET NORTHWEST OF THE CENTER OF A WATER VALVE
 JV4341'AND 2.4 FEET EAST OF THE EAST EDGE OF THE CONCRETE WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4339 ***********************************************************************
 JV4339  DESIGNATION -  17115 WSSC 1969
 JV4339  PID         -  JV4339
 JV4339  STATE/COUNTY-  MD/MONTGOMERY
 JV4339  COUNTRY     -  US
 JV4339  USGS QUAD   -  KENSINGTON (2016)
 JV4339
 JV4339                         *CURRENT SURVEY CONTROL
 JV4339  ______________________________________________________________________
 JV4339* NAD 83(1993) POSITION- 39 00 38.33610(N) 077 06 55.17958(W)   ADJUSTED
 JV4339* NAVD 88 ORTHO HEIGHT -   107.1   (meters)      351.    (feet) VERTCON3
 JV4339  ______________________________________________________________________
 JV4339  GEOID HEIGHT    -        -31.822 (meters)                     GEOID18
 JV4339  LAPLACE CORR    -         -3.10  (seconds)                    DEFLEC18
 JV4339  HORZ ORDER      -  SECOND
 JV4339
 JV4339.The horizontal coordinates were established by classical geodetic methods
 JV4339.and adjusted by the National Geodetic Survey in November 1994.
 JV4339
 JV4339.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4339.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4339
 JV4339.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4339.GEOID18 height accuracy estimate available here.
 JV4339
 JV4339.Click photographs - Photos may exist for this station.
 JV4339
 JV4339.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4339
 JV4339. The following values were computed from the NAD 83(1993) position.
 JV4339
 JV4339;                    North         East     Units Scale Factor Converg.
 JV4339;SPC MD       -   149,194.657   390,011.553   MT  0.99995261   -0 04 20.6
 JV4339;SPC MD       -   489,482.80  1,279,562.90   sFT  0.99995261   -0 04 20.6
 JV4339;UTM  18      - 4,320,087.014   316,848.798   MT  1.00001306   -1 19 54.8
 JV4339
 JV4339!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4339!SPC MD       -   0.99998819  x   0.99995261  =   0.99994080
 JV4339!UTM  18      -   0.99998819  x   1.00001306  =   1.00000125
 JV4339
 JV4339_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1684820087(NAD 83)
 JV4339
 JV4339                          SUPERSEDED SURVEY CONTROL
 JV4339
 JV4339  NAD 83(1991)-  39 00 38.33556(N)    077 06 55.18054(W) AD(       ) 2
 JV4339  NAD 83(1986)-  39 00 38.33539(N)    077 06 55.19033(W) AD(       ) 2
 JV4339  NAD 27      -  39 00 37.94110(N)    077 06 56.26144(W) AD(       ) 2
 JV4339  NGVD 29 (07/19/86)  107.3    (m)          352.     (f) VERT ANG       
 JV4339
 JV4339.Superseded values are not recommended for survey control.
 JV4339
 JV4339.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4339.See file dsdata.pdf to determine how the superseded data were derived.
 JV4339
 JV4339_MARKER: B = BOLT
 JV4339_SETTING: 0 = UNSPECIFIED SETTING
 JV4339_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4339
 JV4339  HISTORY     - Date     Condition        Report By
 JV4339  HISTORY     - 1969     MONUMENTED       WSSC
 JV4339
 JV4339                          STATION DESCRIPTION
 JV4339
 JV4339'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4339'THE STATION IS ABOUT 1 MILE SOUTHWEST OF NORTH BETHESDA
 JV4339'GROVE AND 4 MILES SOUTHWEST OF WHEATON.
 JV4339'
 JV4339'THE STATION IS LOCATED IN THE CENTER OF A CONCRETE ISLAND IN
 JV4339'THE CENTERLINE OF OLD GEORGETOWN ROAD 150 FEET NORTH OF
 JV4339'BEECH AVENUE.
 JV4339'
 JV4339'THE STATION MARK IS A BRASS BOLT AND IS ABOUT 9.0 FEET SOUTH
 JV4339'OF THE SOUTH EDGE OF THE CONCRETE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4432 ***********************************************************************
 JV4432  DESIGNATION -  17116 WSSC 1969
 JV4432  PID         -  JV4432
 JV4432  STATE/COUNTY-  MD/MONTGOMERY
 JV4432  COUNTRY     -  US
 JV4432  USGS QUAD   -  GAITHERSBURG (2016)
 JV4432
 JV4432                         *CURRENT SURVEY CONTROL
 JV4432  ______________________________________________________________________
 JV4432* NAD 83(1993) POSITION- 39 09 12.35011(N) 077 09 12.34261(W)   ADJUSTED
 JV4432* NAVD 88 ORTHO HEIGHT -   168.5   (meters)      553.    (feet) VERTCON3
 JV4432  ______________________________________________________________________
 JV4432  GEOID HEIGHT    -        -31.738 (meters)                     GEOID18
 JV4432  LAPLACE CORR    -         -0.59  (seconds)                    DEFLEC18
 JV4432  HORZ ORDER      -  SECOND
 JV4432
 JV4432.The horizontal coordinates were established by classical geodetic methods
 JV4432.and adjusted by the National Geodetic Survey in November 1994.
 JV4432
 JV4432.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4432.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4432
 JV4432.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4432.GEOID18 height accuracy estimate available here.
 JV4432
 JV4432.Click photographs - Photos may exist for this station.
 JV4432
 JV4432.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4432
 JV4432. The following values were computed from the NAD 83(1993) position.
 JV4432
 JV4432;                    North         East     Units Scale Factor Converg.
 JV4432;SPC MD       -   165,050.003   386,738.309   MT  0.99996156   -0 05 46.7
 JV4432;SPC MD       -   541,501.55  1,268,823.94   sFT  0.99996156   -0 05 46.7
 JV4432;UTM  18      - 4,336,011.590   313,925.262   MT  1.00002634   -1 21 36.2
 JV4432
 JV4432!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4432!SPC MD       -   0.99997854  x   0.99996156  =   0.99994011
 JV4432!UTM  18      -   0.99997854  x   1.00002634  =   1.00000488
 JV4432
 JV4432:                Primary Azimuth Mark                     Grid Az
 JV4432:SPC MD       -  17117 WSSC 1969                          089 22 25.9
 JV4432:UTM  18      -  17117 WSSC 1969                          090 38 15.4
 JV4432
 JV4432_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1392536011(NAD 83)
 JV4432
 JV4432|---------------------------------------------------------------------|
 JV4432| PID    Reference Object                     Distance      Geod. Az  |
 JV4432|                                                           dddmmss.s |
 JV4432| JV4251 MT ZION PEPCO MICROWAVE             APPROX. 5.9 KM 0464741.8 |
 JV4432| JV4430 17117 WSSC 1969                     APPROX. 1.4 KM 0891639.2 |
 JV4432| JV4248 OLNEY WSSC TANK                     APPROX. 7.7 KM 0943635.8 |
 JV4432|---------------------------------------------------------------------|
 JV4432
 JV4432                          SUPERSEDED SURVEY CONTROL
 JV4432
 JV4432  NAD 83(1991)-  39 09 12.35000(N)    077 09 12.34247(W) AD(       ) 2
 JV4432  NAD 83(1986)-  39 09 12.34979(N)    077 09 12.35234(W) AD(       ) 2
 JV4432  NAD 27      -  39 09 11.96352(N)    077 09 13.41855(W) AD(       ) 2
 JV4432  NGVD 29 (07/19/86)  168.7    (m)          553.     (f) VERT ANG       
 JV4432
 JV4432.Superseded values are not recommended for survey control.
 JV4432
 JV4432.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4432.See file dsdata.pdf to determine how the superseded data were derived.
 JV4432
 JV4432_MARKER: I = METAL ROD
 JV4432_SETTING: 0 = UNSPECIFIED SETTING
 JV4432_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4432
 JV4432  HISTORY     - Date     Condition        Report By
 JV4432  HISTORY     - 1969     MONUMENTED       WSSC
 JV4432
 JV4432                          STATION DESCRIPTION
 JV4432
 JV4432'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4432'THE STATION IS ABOUT 1 MILE NORTHWEST OF REDLAND AND 2 MILES
 JV4432'NORTHEAST OF WASHINGTON GROVE.
 JV4432'
 JV4432'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 115
 JV4432'(MUNCASTER MILL ROAD) AND MUNCASTER ROAD IN REDLAND, GO
 JV4432'NORTHWEST ON ROUTE 115 FOR .9 MILES TO A DIRT DRIVE LEADING TO
 JV4432'HOUSE 7504 AND THE STATION IS ON THE LEFT.
 JV4432'
 JV4432'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4432'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 87.90 FEET
 JV4432'NORTHWEST OF THE NORTHWEST CORNER OF HOUSE 7504, 86.24 FEET
 JV4432'EAST OF PEPCO POLE NO. 641739, 91.91 FEET SOUTHEAST OF PEPCO
 JV4432'POLE NO. 612677, 28.52 FEET WEST OF A 24-INCH TREE, AND 11.8
 JV4432'FEET SOUTH OF THE SOUTH EDGE OF MUNCASTER MILL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4430 ***********************************************************************
 JV4430  DESIGNATION -  17117 WSSC 1969
 JV4430  PID         -  JV4430
 JV4430  STATE/COUNTY-  MD/MONTGOMERY
 JV4430  COUNTRY     -  US
 JV4430  USGS QUAD   -  GAITHERSBURG (2016)
 JV4430
 JV4430                         *CURRENT SURVEY CONTROL
 JV4430  ______________________________________________________________________
 JV4430* NAD 83(1993) POSITION- 39 09 12.90347(N) 077 08 15.58999(W)   ADJUSTED
 JV4430* NAVD 88 ORTHO HEIGHT -   143.3   (meters)      470.    (feet) VERTCON3
 JV4430  ______________________________________________________________________
 JV4430  GEOID HEIGHT    -        -31.745 (meters)                     GEOID18
 JV4430  LAPLACE CORR    -         -1.19  (seconds)                    DEFLEC18
 JV4430  HORZ ORDER      -  SECOND
 JV4430
 JV4430.The horizontal coordinates were established by classical geodetic methods
 JV4430.and adjusted by the National Geodetic Survey in November 1994.
 JV4430
 JV4430.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4430.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4430
 JV4430.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4430.GEOID18 height accuracy estimate available here.
 JV4430
 JV4430.Click photographs - Photos may exist for this station.
 JV4430
 JV4430.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4430
 JV4430. The following values were computed from the NAD 83(1993) position.
 JV4430
 JV4430;                    North         East     Units Scale Factor Converg.
 JV4430;SPC MD       -   165,064.894   388,100.958   MT  0.99996157   -0 05 11.0
 JV4430;SPC MD       -   541,550.41  1,273,294.56   sFT  0.99996157   -0 05 11.0
 JV4430;UTM  18      - 4,335,996.425   315,287.992   MT  1.00002012   -1 21 00.4
 JV4430
 JV4430!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4430!SPC MD       -   0.99998250  x   0.99996157  =   0.99994407
 JV4430!UTM  18      -   0.99998250  x   1.00002012  =   1.00000262
 JV4430
 JV4430:                Primary Azimuth Mark                     Grid Az
 JV4430:SPC MD       -  FLINT HILL                               101 31 36.8
 JV4430:UTM  18      -  FLINT HILL                               102 47 26.2
 JV4430
 JV4430_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1528735996(NAD 83)
 JV4430
 JV4430|---------------------------------------------------------------------|
 JV4430| PID    Reference Object                     Distance      Geod. Az  |
 JV4430|                                                           dddmmss.s |
 JV4430| JV4244 FLINT HILL                          APPROX. 2.0 KM 1012625.8 |
 JV4430|---------------------------------------------------------------------|
 JV4430
 JV4430                          SUPERSEDED SURVEY CONTROL
 JV4430
 JV4430  NAD 83(1991)-  39 09 12.90338(N)    077 08 15.58985(W) AD(       ) 2
 JV4430  NAD 83(1986)-  39 09 12.90315(N)    077 08 15.59971(W) AD(       ) 2
 JV4430  NAD 27      -  39 09 12.51663(N)    077 08 16.66758(W) AD(       ) 2
 JV4430  NGVD 29 (07/19/86)  143.5    (m)          471.     (f) VERT ANG       
 JV4430
 JV4430.Superseded values are not recommended for survey control.
 JV4430
 JV4430.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4430.See file dsdata.pdf to determine how the superseded data were derived.
 JV4430
 JV4430_MARKER: I = METAL ROD
 JV4430_SETTING: 0 = UNSPECIFIED SETTING
 JV4430_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4430
 JV4430  HISTORY     - Date     Condition        Report By
 JV4430  HISTORY     - 1969     MONUMENTED       WSSC
 JV4430
 JV4430                          STATION DESCRIPTION
 JV4430
 JV4430'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4430'THE STATION IS ABOUT 1 MILE NORTHEAST OF REDLAND AND 2-1/2
 JV4430'MILES NORTHEAST OF WASHINGTON GROVE.
 JV4430'
 JV4430'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 115
 JV4430'(MUNCASTER MILL ROAD) AND MUNCASTER ROAD IN REDLAND, GO
 JV4430'NORTHEAST ON MUNCASTER ROAD FOR .65 MILES TO THE STATION ON THE
 JV4430'LEFT.
 JV4430'
 JV4430'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4430'CENTER AND IS 3 INCHES BELOW THE SURFACE.  IT IS ON THE NORTH
 JV4430'SIDE OF A DIRT DRIVE AND BETWEEN A WOOD FENCE AND THE ROAD
 JV4430'AND 91.78 FEET NORTHEAST OF C AND P POLE NO 17, 73.28 FEET
 JV4430'SOUTHEAST OF THE NORTHEAST CORNER, AND 64.72 FEET EAST OF THE
 JV4430'CORNER OF THE PORCH ON HOUSE 18110.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4265 ***********************************************************************
 JV4265  DESIGNATION -  17118 WSSC 1969
 JV4265  PID         -  JV4265
 JV4265  STATE/COUNTY-  MD/MONTGOMERY
 JV4265  COUNTRY     -  US
 JV4265  USGS QUAD   -  SANDY SPRING (2016)
 JV4265
 JV4265                         *CURRENT SURVEY CONTROL
 JV4265  ______________________________________________________________________
 JV4265* NAD 83(1993) POSITION- 39 08 10.64234(N) 077 07 13.91712(W)   ADJUSTED
 JV4265* NAVD 88 ORTHO HEIGHT -   133.0   (meters)      436.    (feet) VERTCON3
 JV4265  ______________________________________________________________________
 JV4265  GEOID HEIGHT    -        -31.756 (meters)                     GEOID18
 JV4265  LAPLACE CORR    -         -1.81  (seconds)                    DEFLEC18
 JV4265  HORZ ORDER      -  SECOND
 JV4265
 JV4265.The horizontal coordinates were established by classical geodetic methods
 JV4265.and adjusted by the National Geodetic Survey in November 1994.
 JV4265
 JV4265.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4265.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4265
 JV4265.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4265.GEOID18 height accuracy estimate available here.
 JV4265
 JV4265.Click photographs - Photos may exist for this station.
 JV4265
 JV4265.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4265
 JV4265. The following values were computed from the NAD 83(1993) position.
 JV4265
 JV4265;                    North         East     Units Scale Factor Converg.
 JV4265;SPC MD       -   163,142.843   389,579.179   MT  0.99996015   -0 04 32.3
 JV4265;SPC MD       -   535,244.48  1,278,144.36   sFT  0.99996015   -0 04 32.3
 JV4265;UTM  18      - 4,334,042.138   316,723.554   MT  1.00001361   -1 20 19.6
 JV4265
 JV4265!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4265!SPC MD       -   0.99998412  x   0.99996015  =   0.99994427
 JV4265!UTM  18      -   0.99998412  x   1.00001361  =   0.99999773
 JV4265
 JV4265_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1672334042(NAD 83)
 JV4265
 JV4265                          SUPERSEDED SURVEY CONTROL
 JV4265
 JV4265  NAD 83(1991)-  39 08 10.64226(N)    077 07 13.91696(W) AD(       ) 2
 JV4265  NAD 83(1986)-  39 08 10.64200(N)    077 07 13.92686(W) AD(       ) 2
 JV4265  NAD 27      -  39 08 10.25444(N)    077 07 14.99668(W) AD(       ) 2
 JV4265  NGVD 29 (07/19/86)  133.2    (m)          437.     (f) VERT ANG       
 JV4265
 JV4265.Superseded values are not recommended for survey control.
 JV4265
 JV4265.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4265.See file dsdata.pdf to determine how the superseded data were derived.
 JV4265
 JV4265_MARKER: I = METAL ROD
 JV4265_SETTING: 0 = UNSPECIFIED SETTING
 JV4265_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4265
 JV4265  HISTORY     - Date     Condition        Report By
 JV4265  HISTORY     - 1969     MONUMENTED       WSSC
 JV4265
 JV4265                          STATION DESCRIPTION
 JV4265
 JV4265'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4265'THE STATION IS ABOUT 3 MILES SOUTHWEST OF OLNEY AND 3 MILES
 JV4265'NORTHWEST OF NORBECK.
 JV4265'
 JV4265'TO REACH THE STATION FROM THE INTERSECTION OF BOWIE MILL ROAD
 JV4265'AND MUNCASTER MILL ROAD GO NORTH ON BOWIE MILL ROAD TO THE
 JV4265'STATION ON THE LEFT.
 JV4265'
 JV4265'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4265'CENTER.  IT IS 41.39 FEET WEST OF C AND P POLE 69, 32.90 FEET
 JV4265'SOUTHEAST OF A NAIL IN THE TOP OF A FENCE POST, 9.13 FEET SOUTH
 JV4265'OF A NAIL IN THE SOUTHWEST SIDE OF A FENCE POST AND 8.37 FEET
 JV4265'SOUTHWEST OF A NAIL IN THE TOP OF A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4342 ***********************************************************************
 JV4342  DESIGNATION -  17119 WSSC 1969
 JV4342  PID         -  JV4342
 JV4342  STATE/COUNTY-  MD/MONTGOMERY
 JV4342  COUNTRY     -  US
 JV4342  USGS QUAD   -  KENSINGTON (2016)
 JV4342
 JV4342                         *CURRENT SURVEY CONTROL
 JV4342  ______________________________________________________________________
 JV4342* NAD 83(1993) POSITION- 39 07 07.26662(N) 077 07 16.80163(W)   ADJUSTED
 JV4342* NAVD 88 ORTHO HEIGHT -   133.0   (meters)      436.    (feet) VERTCON3
 JV4342  ______________________________________________________________________
 JV4342  GEOID HEIGHT    -        -31.753 (meters)                     GEOID18
 JV4342  LAPLACE CORR    -         -2.12  (seconds)                    DEFLEC18
 JV4342  HORZ ORDER      -  SECOND
 JV4342
 JV4342.The horizontal coordinates were established by classical geodetic methods
 JV4342.and adjusted by the National Geodetic Survey in November 1994.
 JV4342
 JV4342.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4342.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4342
 JV4342.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4342.GEOID18 height accuracy estimate available here.
 JV4342
 JV4342.Click photographs - Photos may exist for this station.
 JV4342
 JV4342.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4342
 JV4342. The following values were computed from the NAD 83(1993) position.
 JV4342
 JV4342;                    North         East     Units Scale Factor Converg.
 JV4342;SPC MD       -   161,188.616   389,507.308   MT  0.99995881   -0 04 34.2
 JV4342;SPC MD       -   528,832.98  1,277,908.56   sFT  0.99995881   -0 04 34.2
 JV4342;UTM  18      - 4,332,089.864   316,608.624   MT  1.00001413   -1 20 19.6
 JV4342
 JV4342!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4342!SPC MD       -   0.99998412  x   0.99995881  =   0.99994293
 JV4342!UTM  18      -   0.99998412  x   1.00001413  =   0.99999825
 JV4342
 JV4342:                Primary Azimuth Mark                     Grid Az
 JV4342:SPC MD       -  FLINT HILL                               008 54 20.6
 JV4342:UTM  18      -  FLINT HILL                               010 10 06.0
 JV4342
 JV4342_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1660832089(NAD 83)
 JV4342
 JV4342|---------------------------------------------------------------------|
 JV4342| PID    Reference Object                     Distance      Geod. Az  |
 JV4342|                                                           dddmmss.s |
 JV4342| JV4244 FLINT HILL                          APPROX. 3.5 KM 0084946.4 |
 JV4342| JV4248 OLNEY WSSC TANK                     APPROX. 5.9 KM 0562457.8 |
 JV4342|---------------------------------------------------------------------|
 JV4342
 JV4342                          SUPERSEDED SURVEY CONTROL
 JV4342
 JV4342  NAD 83(1991)-  39 07 07.26654(N)    077 07 16.80146(W) AD(       ) 2
 JV4342  NAD 83(1986)-  39 07 07.26627(N)    077 07 16.81139(W) AD(       ) 2
 JV4342  NAD 27      -  39 07 06.87759(N)    077 07 17.88141(W) AD(       ) 2
 JV4342  NGVD 29 (07/19/86)  133.2    (m)          437.     (f) VERT ANG       
 JV4342
 JV4342.Superseded values are not recommended for survey control.
 JV4342
 JV4342.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4342.See file dsdata.pdf to determine how the superseded data were derived.
 JV4342
 JV4342_MARKER: I = METAL ROD
 JV4342_SETTING: 0 = UNSPECIFIED SETTING
 JV4342_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4342
 JV4342  HISTORY     - Date     Condition        Report By
 JV4342  HISTORY     - 1969     MONUMENTED       WSSC
 JV4342
 JV4342                          STATION DESCRIPTION
 JV4342
 JV4342'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4342'THE STATION IS ABOUT 2-1/2 MILES NORTHWEST OF NORBECK AND 3
 JV4342'MILES NORTH OF ROCKVILLE.
 JV4342'
 JV4342'TO REACH THE STATION FROM THE INTERSECTION OF AVERY ROAD AND
 JV4342'NEEDWOOD LAKE DRIVE GO WEST ON NEEDWOOD LAKE DRIVE FOR .1 MILE
 JV4342'AND THE STATION IS ON THE LEFT.
 JV4342'
 JV4342'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4342'AND IS 2 INCHES BELOW THE GROUND.  IT IS 58.90 FEET SOUTHWEST
 JV4342'OF POWER LINE POLE 748194, 40.64 FEET NORTHWEST OF A 4-INCH PINE
 JV4342'AND 22.10 FEET SOUTH OF THE SOUTH EDGE OF THE WESTBOUND LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2682 ***********************************************************************
 JV2682  DESIGNATION -  1712 WSSC
 JV2682  PID         -  JV2682
 JV2682  STATE/COUNTY-  MD/MONTGOMERY
 JV2682  COUNTRY     -  US
 JV2682  USGS QUAD   -  KENSINGTON (2016)
 JV2682
 JV2682                         *CURRENT SURVEY CONTROL
 JV2682  ______________________________________________________________________
 JV2682* NAD 83(1986) POSITION- 39 03 52.     (N) 077 01 42.     (W)   SCALED
 JV2682* NAVD 88 ORTHO HEIGHT -    83.008 (meters)      272.34  (feet) ADJUSTED
 JV2682  ______________________________________________________________________
 JV2682  GEOID HEIGHT    -        -31.931 (meters)                     GEOID18
 JV2682  DYNAMIC HEIGHT  -         82.962 (meters)      272.18  (feet) COMP
 JV2682  MODELED GRAVITY -    980,083.6   (mgal)                       NAVD 88
 JV2682
 JV2682  VERT ORDER      -  SECOND    CLASS 0
 JV2682
 JV2682.The horizontal coordinates were scaled from a map and have
 JV2682.an estimated accuracy of +/- 6 seconds.
 JV2682
 JV2682.The orthometric height was determined by differential leveling and
 JV2682.adjusted by the NATIONAL GEODETIC SURVEY
 JV2682.in June 1991.
 JV2682
 JV2682.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2682.GEOID18 height accuracy estimate available here.
 JV2682
 JV2682.Click photographs - Photos may exist for this station.
 JV2682
 JV2682.The dynamic height is computed by dividing the NAVD 88
 JV2682.geopotential number by the normal gravity value computed on the
 JV2682.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2682.degrees latitude (g = 980.6199 gals.).
 JV2682
 JV2682.The modeled gravity was interpolated from observed gravity values.
 JV2682
 JV2682;                    North         East    Units  Estimated Accuracy
 JV2682;SPC MD       -   155,160.      397,550.      MT  (+/- 180 meters Scaled)
 JV2682
 JV2682_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ245258(NAD 83)
 JV2682
 JV2682                          SUPERSEDED SURVEY CONTROL
 JV2682
 JV2682  NGVD 29 (11/26/84)   83.221  (m)          273.03   (f) ADJUSTED    2 0
 JV2682
 JV2682.Superseded values are not recommended for survey control.
 JV2682
 JV2682.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2682.See file dsdata.pdf to determine how the superseded data were derived.
 JV2682
 JV2682_MARKER: DD = SURVEY DISK
 JV2682_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2682_SP_SET: BRIDGE
 JV2682_STAMPING: 1712
 JV2682_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2682_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2682+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV2682
 JV2682  HISTORY     - Date     Condition        Report By
 JV2682  HISTORY     - UNK      MONUMENTED       WSSC
 JV2682  HISTORY     - 1951     GOOD             CGS
 JV2682  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2682  HISTORY     - 20011025 GOOD             USPSQD
 JV2682  HISTORY     - 20050405 GOOD             USPSQD
 JV2682
 JV2682                          STATION DESCRIPTION
 JV2682
 JV2682'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2682'1.3 MI NE FROM GLENMONT.
 JV2682'1.3 MILES NORTHEAST ALONG STATE HIGHWAY 183 FROM THE JUNCTION
 JV2682'WITH STATE HIGHWAY 97 AT GLENMONT, MONTGOMERY COUNTY, AT THE
 JV2682'BRIDGE OVER NORTHWEST BRANCH, AT THE EAST CORNER OF THE BRIDGE
 JV2682'AND IN THE TOP OF THE WING WALL.  A WASHINGTON SUBURBAN SANITARY
 JV2682'DISTRICT BRONZE DISK, STAMPED 1712.
 JV2682
 JV2682                          STATION RECOVERY (1995)
 JV2682
 JV2682'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2682'MARK NOT FOUND.
 JV2682
 JV2682                          STATION RECOVERY (2001)
 JV2682
 JV2682'RECOVERY NOTE BY US POWER SQUADRON 2001 (BAS)
 JV2682'MARK STAMPED RESET 1996
 JV2682'
 JV2682
 JV2682                          STATION RECOVERY (2005)
 JV2682
 JV2682'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV2682'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4435 ***********************************************************************
 JV4435  DESIGNATION -  17120 WSSC 1969
 JV4435  PID         -  JV4435
 JV4435  STATE/COUNTY-  MD/MONTGOMERY
 JV4435  COUNTRY     -  US
 JV4435  USGS QUAD   -  GAITHERSBURG (2016)
 JV4435
 JV4435                         *CURRENT SURVEY CONTROL
 JV4435  ______________________________________________________________________
 JV4435* NAD 83(1993) POSITION- 39 09 22.68505(N) 077 10 41.69321(W)   ADJUSTED
 JV4435* NAVD 88 ORTHO HEIGHT -   145.2   (meters)      476.    (feet) VERTCON3
 JV4435  ______________________________________________________________________
 JV4435  GEOID HEIGHT    -        -31.741 (meters)                     GEOID18
 JV4435  LAPLACE CORR    -          0.60  (seconds)                    DEFLEC18
 JV4435  HORZ ORDER      -  SECOND
 JV4435
 JV4435.The horizontal coordinates were established by classical geodetic methods
 JV4435.and adjusted by the National Geodetic Survey in November 1994.
 JV4435
 JV4435.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4435.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4435
 JV4435.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4435.GEOID18 height accuracy estimate available here.
 JV4435
 JV4435.Click photographs - Photos may exist for this station.
 JV4435
 JV4435.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4435
 JV4435. The following values were computed from the NAD 83(1993) position.
 JV4435
 JV4435;                    North         East     Units Scale Factor Converg.
 JV4435;SPC MD       -   165,372.601   384,593.635   MT  0.99996180   -0 06 42.7
 JV4435;SPC MD       -   542,559.94  1,261,787.62   sFT  0.99996180   -0 06 42.7
 JV4435;UTM  18      - 4,336,381.440   311,788.076   MT  1.00003619   -1 22 33.0
 JV4435
 JV4435!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4435!SPC MD       -   0.99998220  x   0.99996180  =   0.99994400
 JV4435!UTM  18      -   0.99998220  x   1.00003619  =   1.00001839
 JV4435
 JV4435:                Primary Azimuth Mark                     Grid Az
 JV4435:SPC MD       -  GAITHERSBURG                             208 42 17.0
 JV4435:UTM  18      -  GAITHERSBURG                             209 58 07.3
 JV4435
 JV4435_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1178836381(NAD 83)
 JV4435
 JV4435|---------------------------------------------------------------------|
 JV4435| PID    Reference Object                     Distance      Geod. Az  |
 JV4435|                                                           dddmmss.s |
 JV4435| JV4433 17121 WSSC 1969                     235.521 METERS 11329     |
 JV4435| JV2608 GAITHERSBURG                        APPROX. 1.9 KM 2083534.3 |
 JV4435|---------------------------------------------------------------------|
 JV4435
 JV4435                          SUPERSEDED SURVEY CONTROL
 JV4435
 JV4435  NAD 83(1991)-  39 09 22.68463(N)    077 10 41.69342(W) AD(       ) 2
 JV4435  NAD 83(1986)-  39 09 22.68450(N)    077 10 41.70347(W) AD(       ) 2
 JV4435  NAD 27      -  39 09 22.29833(N)    077 10 42.76734(W) AD(       ) 2
 JV4435  NGVD 29 (07/19/86)  145.4    (m)          477.     (f) VERT ANG       
 JV4435
 JV4435.Superseded values are not recommended for survey control.
 JV4435
 JV4435.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4435.See file dsdata.pdf to determine how the superseded data were derived.
 JV4435
 JV4435_MARKER: I = METAL ROD
 JV4435_SETTING: 0 = UNSPECIFIED SETTING
 JV4435_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4435
 JV4435  HISTORY     - Date     Condition        Report By
 JV4435  HISTORY     - 1969     MONUMENTED       WSSC
 JV4435
 JV4435                          STATION DESCRIPTION
 JV4435
 JV4435'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4435'THE STATION IS ABOUT 1 MILE NORTH OF GAITHERSBURG AND 2 MILES
 JV4435'WEST OF REDLAND.
 JV4435'
 JV4435'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 124 AND
 JV4435'EMORY GROVE ROAD, GO NORTHWEST ON EMORY GROVE ROAD FOR .85
 JV4435'MILES TO A CURVE IN THE ROAD AND THE STATION IS ON THE RIGHT.
 JV4435'
 JV4435'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4435'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS ON THE TOP OF A
 JV4435'CUT BANK AND IS 29.80 FEET WEST OF POWER POLE NO. 620792, 65.14
 JV4435'FEET NORTHWEST OF POLE NO. 629785, 51.39 FEET SOUTHEAST OF A
 JV4435'15-INCH LOCUST, 87.48 FEET SOUTHWEST OF THE SOUTHWEST CORNER
 JV4435'OF A STUCCO HOME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4433 ***********************************************************************
 JV4433  DESIGNATION -  17121 WSSC 1969
 JV4433  PID         -  JV4433
 JV4433  STATE/COUNTY-  MD/MONTGOMERY
 JV4433  COUNTRY     -  US
 JV4433  USGS QUAD   -  GAITHERSBURG (2016)
 JV4433
 JV4433                         *CURRENT SURVEY CONTROL
 JV4433  ______________________________________________________________________
 JV4433* NAD 83(1993) POSITION- 39 09 19.64172(N) 077 10 32.69638(W)   ADJUSTED
 JV4433* NAVD 88 ORTHO HEIGHT -   145.8   (meters)      478.    (feet) VERTCON3
 JV4433  ______________________________________________________________________
 JV4433  GEOID HEIGHT    -        -31.739 (meters)                     GEOID18
 JV4433  LAPLACE CORR    -          0.52  (seconds)                    DEFLEC18
 JV4433  HORZ ORDER      -  SECOND
 JV4433
 JV4433.The horizontal coordinates were established by classical geodetic methods
 JV4433.and adjusted by the National Geodetic Survey in November 1994.
 JV4433
 JV4433.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4433.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4433
 JV4433.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4433.GEOID18 height accuracy estimate available here.
 JV4433
 JV4433.Click photographs - Photos may exist for this station.
 JV4433
 JV4433.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4433
 JV4433. The following values were computed from the NAD 83(1993) position.
 JV4433
 JV4433;                    North         East     Units Scale Factor Converg.
 JV4433;SPC MD       -   165,278.334   384,809.458   MT  0.99996173   -0 06 37.1
 JV4433;SPC MD       -   542,250.67  1,262,495.70   sFT  0.99996173   -0 06 37.1
 JV4433;UTM  18      - 4,336,282.429   312,001.783   MT  1.00003520   -1 22 27.2
 JV4433
 JV4433!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4433!SPC MD       -   0.99998211  x   0.99996173  =   0.99994384
 JV4433!UTM  18      -   0.99998211  x   1.00003520  =   1.00001731
 JV4433
 JV4433_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1200136282(NAD 83)
 JV4433
 JV4433                          SUPERSEDED SURVEY CONTROL
 JV4433
 JV4433  NAD 83(1991)-  39 09 19.64130(N)    077 10 32.69659(W) AD(       ) 2
 JV4433  NAD 83(1986)-  39 09 19.64116(N)    077 10 32.70664(W) AD(       ) 2
 JV4433  NAD 27      -  39 09 19.25492(N)    077 10 33.77080(W) AD(       ) 2
 JV4433  NGVD 29 (07/19/86)  146.0    (m)          479.     (f) VERT ANG       
 JV4433
 JV4433.Superseded values are not recommended for survey control.
 JV4433
 JV4433.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4433.See file dsdata.pdf to determine how the superseded data were derived.
 JV4433
 JV4433_MARKER: I = METAL ROD
 JV4433_SETTING: 0 = UNSPECIFIED SETTING
 JV4433_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4433
 JV4433  HISTORY     - Date     Condition        Report By
 JV4433  HISTORY     - 1969     MONUMENTED       WSSC
 JV4433
 JV4433                          STATION DESCRIPTION
 JV4433
 JV4433'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4433'THE STATION IS ABOUT 1 MILE NORTH OF GAITHERSBURG AND 2 MILES
 JV4433'WEST OF REDLAND.
 JV4433'
 JV4433'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 124 AND
 JV4433'EMORY GROVE ROAD, GO NORTHWEST ON EMORY GROVE ROAD FOR .65 MILES
 JV4433'TO A BARN AND THE STATION IS ON THE RIGHT.
 JV4433'
 JV4433'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4433'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 59.00 FEET NORTHEAST
 JV4433'OF PEPCO POLE NO. 620788, 82.35 FEET NORTHWEST OF PEPCO POLE
 JV4433'NO. 620787, 30.80 FEET SOUTHEAST OF THE SOUTHWEST CORNER OF A
 JV4433'BARN, 36.45 FEET SOUTHWEST OF THE SOUTHEAST CORNER OF A BARN
 JV4433'AND 21.0 FEET NORTH OF THE NORTH EDGE OF EMORY GROVE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4322 ***********************************************************************
 JV4322  DESIGNATION -  17122 WSSC 1969
 JV4322  PID         -  JV4322
 JV4322  STATE/COUNTY-  MD/MONTGOMERY
 JV4322  COUNTRY     -  US
 JV4322  USGS QUAD   -  KENSINGTON (2016)
 JV4322
 JV4322                         *CURRENT SURVEY CONTROL
 JV4322  ______________________________________________________________________
 JV4322* NAD 83(1993) POSITION- 39 00 11.64090(N) 077 02 08.55923(W)   NO CHECK
 JV4322* NAVD 88 ORTHO HEIGHT -   110.7   (meters)      363.    (feet) VERTCON3
 JV4322  ______________________________________________________________________
 JV4322  GEOID HEIGHT    -        -31.953 (meters)                     GEOID18
 JV4322  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 JV4322  HORZ ORDER      -  SECOND
 JV4322
 JV4322.The horizontal coordinates were established by classical geodetic methods
 JV4322.and adjusted by the National Geodetic Survey in November 1994.
 JV4322
 JV4322.No horizontal observational check was made to the station.
 JV4322
 JV4322.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4322.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4322
 JV4322.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4322.GEOID18 height accuracy estimate available here.
 JV4322
 JV4322.Click photographs - Photos may exist for this station.
 JV4322
 JV4322.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4322
 JV4322. The following values were computed from the NAD 83(1993) position.
 JV4322
 JV4322;                    North         East     Units Scale Factor Converg.
 JV4322;SPC MD       -   148,365.774   396,906.782   MT  0.99995231   -0 01 20.7
 JV4322;SPC MD       -   486,763.38  1,302,185.00   sFT  0.99995231   -0 01 20.7
 JV4322;UTM  18      - 4,319,106.747   323,724.456   MT  0.99998263   -1 16 53.5
 JV4322
 JV4322!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4322!SPC MD       -   0.99998765  x   0.99995231  =   0.99993996
 JV4322!UTM  18      -   0.99998765  x   0.99998263  =   0.99997028
 JV4322
 JV4322:                Primary Azimuth Mark                     Grid Az
 JV4322:SPC MD       -  GEORGIAN                                 152 19 08.9
 JV4322:UTM  18      -  GEORGIAN                                 153 34 41.7
 JV4322
 JV4322_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2372419106(NAD 83)
 JV4322
 JV4322|---------------------------------------------------------------------|
 JV4322| PID    Reference Object                     Distance      Geod. Az  |
 JV4322|                                                           dddmmss.s |
 JV4322| HV4472 GEORGIAN                            APPROX. 0.7 KM 1521748.2 |
 JV4322| JV4324 17123 WSSC 1969                     300.398 METERS 32002     |
 JV4322|---------------------------------------------------------------------|
 JV4322
 JV4322                          SUPERSEDED SURVEY CONTROL
 JV4322
 JV4322  NAD 83(1991)-  39 00 11.64063(N)    077 02 08.55960(W) AD(       ) 2
 JV4322  NAD 83(1986)-  39 00 11.64012(N)    077 02 08.56985(W) AD(       ) 2
 JV4322  NAD 27      -  39 00 11.24507(N)    077 02 09.64961(W) AD(       ) 2
 JV4322  NGVD 29 (07/19/86)  110.9    (m)          364.     (f) VERT ANG       
 JV4322
 JV4322.Superseded values are not recommended for survey control.
 JV4322
 JV4322.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4322.See file dsdata.pdf to determine how the superseded data were derived.
 JV4322
 JV4322_MARKER: B = BOLT
 JV4322_SETTING: 0 = UNSPECIFIED SETTING
 JV4322_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4322
 JV4322  HISTORY     - Date     Condition        Report By
 JV4322  HISTORY     - 1969     MONUMENTED       WSSC
 JV4322
 JV4322                          STATION DESCRIPTION
 JV4322
 JV4322'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4322'THE STATION IS ABOUT 3 MILES SOUTH OF WHEATON AND 1/2 MILE
 JV4322'NORTH OF SILVER SPRING.
 JV4322'
 JV4322'THE STATION IS LOCATED ON THE SOUTHEAST CORNER OF GEORGIA
 JV4322'AVENUE (ROUTE 97) AND WOODSIDE PARKWAY.
 JV4322'
 JV4322'THE STATION MARK IS A BRASS BOLT IN A CONCRETE WALK AT THE
 JV4322'BACK EDGE OF THE CURB.  IT IS 32.20 FEET NORTHWEST OF PEPCO
 JV4322'POLE 75120 AND 42.0 FEET SOUTH OF THE CENTERLINE OF WOODSIDE
 JV4322'PARKWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4324 ***********************************************************************
 JV4324  DESIGNATION -  17123 WSSC 1969
 JV4324  PID         -  JV4324
 JV4324  STATE/COUNTY-  MD/MONTGOMERY
 JV4324  COUNTRY     -  US
 JV4324  USGS QUAD   -  KENSINGTON (2016)
 JV4324
 JV4324                         *CURRENT SURVEY CONTROL
 JV4324  ______________________________________________________________________
 JV4324* NAD 83(1993) POSITION- 39 00 19.10751(N) 077 02 16.57754(W)   ADJUSTED
 JV4324* NAVD 88 ORTHO HEIGHT -   116.6   (meters)      383.    (feet) VERTCON3
 JV4324  ______________________________________________________________________
 JV4324  GEOID HEIGHT    -        -31.948 (meters)                     GEOID18
 JV4324  LAPLACE CORR    -         -2.88  (seconds)                    DEFLEC18
 JV4324  HORZ ORDER      -  SECOND
 JV4324
 JV4324.The horizontal coordinates were established by classical geodetic methods
 JV4324.and adjusted by the National Geodetic Survey in November 1994.
 JV4324
 JV4324.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4324.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4324
 JV4324.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4324.GEOID18 height accuracy estimate available here.
 JV4324
 JV4324.Click photographs - Photos may exist for this station.
 JV4324
 JV4324.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4324
 JV4324. The following values were computed from the NAD 83(1993) position.
 JV4324
 JV4324;                    North         East     Units Scale Factor Converg.
 JV4324;SPC MD       -   148,596.093   396,713.952   MT  0.99995239   -0 01 25.7
 JV4324;SPC MD       -   487,519.02  1,301,552.36   sFT  0.99995239   -0 01 25.7
 JV4324;UTM  18      - 4,319,341.256   323,536.728   MT  0.99998344   -1 16 58.8
 JV4324
 JV4324!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4324!SPC MD       -   0.99998672  x   0.99995239  =   0.99993911
 JV4324!UTM  18      -   0.99998672  x   0.99998344  =   0.99997016
 JV4324
 JV4324_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2353619341(NAD 83)
 JV4324
 JV4324                          SUPERSEDED SURVEY CONTROL
 JV4324
 JV4324  NAD 83(1991)-  39 00 19.10724(N)    077 02 16.57792(W) AD(       ) 2
 JV4324  NAD 83(1986)-  39 00 19.10673(N)    077 02 16.58816(W) AD(       ) 2
 JV4324  NAD 27      -  39 00 18.71180(N)    077 02 17.66765(W) AD(       ) 2
 JV4324  NGVD 29 (07/19/86)  116.8    (m)          383.     (f) VERT ANG       
 JV4324
 JV4324.Superseded values are not recommended for survey control.
 JV4324
 JV4324.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4324.See file dsdata.pdf to determine how the superseded data were derived.
 JV4324
 JV4324_MARKER: B = BOLT
 JV4324_SETTING: 0 = UNSPECIFIED SETTING
 JV4324_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4324
 JV4324  HISTORY     - Date     Condition        Report By
 JV4324  HISTORY     - 1969     MONUMENTED       WSSC
 JV4324
 JV4324                          STATION DESCRIPTION
 JV4324
 JV4324'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4324'THE STATION IS ABOUT 3 MILES SOUTH OF WHEATON AND 1/2 MILE
 JV4324'NORTH OF SILVER SPRING.
 JV4324'
 JV4324'THE STATION IS LOCATED ON THE NORTHEAST CORNER OF GEORGIA
 JV4324'AVENUE (ROUTE 97) AND GRACE CHURCH ROAD.
 JV4324'
 JV4324'THE STATION MARK IS A BRASS BOLT IN THE CENTERLINE OF A CONCRETE
 JV4324'WALK AND IS 9.0 FEET NORTHWEST OF PEPCO POLE 75128 AND 58.6
 JV4324'NORTH OF THE CENTERLINE OF GRACE CHURCH ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4320 ***********************************************************************
 JV4320  DESIGNATION -  17125 WSSC 1969
 JV4320  PID         -  JV4320
 JV4320  STATE/COUNTY-  MD/MONTGOMERY
 JV4320  COUNTRY     -  US
 JV4320  USGS QUAD   -  KENSINGTON (2016)
 JV4320
 JV4320                         *CURRENT SURVEY CONTROL
 JV4320  ______________________________________________________________________
 JV4320* NAD 83(1991) POSITION- 39 03 48.33388(N) 077 01 08.02928(W)   ADJUSTED
 JV4320* NAVD 88 ORTHO HEIGHT -   102.4   (meters)      336.    (feet) VERTCON3
 JV4320  ______________________________________________________________________
 JV4320  GEOID HEIGHT    -        -31.946 (meters)                     GEOID18
 JV4320  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 JV4320  HORZ ORDER      -  SECOND
 JV4320
 JV4320.The horizontal coordinates were established by classical geodetic methods
 JV4320.and adjusted by the National Geodetic Survey in January 1992.
 JV4320
 JV4320.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4320.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4320
 JV4320.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4320.GEOID18 height accuracy estimate available here.
 JV4320
 JV4320.Click photographs - Photos may exist for this station.
 JV4320
 JV4320.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4320
 JV4320. The following values were computed from the NAD 83(1991) position.
 JV4320
 JV4320;                    North         East     Units Scale Factor Converg.
 JV4320;SPC MD       -   155,047.365   398,364.555   MT  0.99995519   -0 00 42.7
 JV4320;SPC MD       -   508,684.56  1,306,967.71   sFT  0.99995519   -0 00 42.7
 JV4320;UTM  18      - 4,325,754.839   325,328.833   MT  0.99997569   -1 16 21.3
 JV4320
 JV4320!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4320!SPC MD       -   0.99998895  x   0.99995519  =   0.99994414
 JV4320!UTM  18      -   0.99998895  x   0.99997569  =   0.99996464
 JV4320
 JV4320_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2532825754(NAD 83)
 JV4320
 JV4320                          SUPERSEDED SURVEY CONTROL
 JV4320
 JV4320  NAD 83(1986)-  39 03 48.33325(N)    077 01 08.03937(W) AD(       ) 2
 JV4320  NAD 27      -  39 03 47.94182(N)    077 01 09.12087(W) AD(       ) 2
 JV4320  NGVD 29 (07/19/86)  102.6    (m)          337.     (f) VERT ANG       
 JV4320
 JV4320.Superseded values are not recommended for survey control.
 JV4320
 JV4320.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4320.See file dsdata.pdf to determine how the superseded data were derived.
 JV4320
 JV4320_MARKER: I = METAL ROD
 JV4320_SETTING: 0 = UNSPECIFIED SETTING
 JV4320_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4320
 JV4320  HISTORY     - Date     Condition        Report By
 JV4320  HISTORY     - 1969     MONUMENTED       WSSC
 JV4320  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV4320
 JV4320                          STATION DESCRIPTION
 JV4320
 JV4320'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4320'THE STATION IS ABOUT 1-3/4 MILES EAST OF GLENMONT AND 1 MILE
 JV4320'SOUTHWEST OF COLESVILLE.
 JV4320'
 JV4320'THE STATION IS LOCATED ON THE WEST SIDE OF ELDRID PLACE AT
 JV4320'THE INTERSECTION OF ELDRID ROAD.
 JV4320'
 JV4320'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4320'CENTER AND IS 3 INCHES BELOW THE GROUND.  IT IS 60.32 FEET SOUTH
 JV4320'OF C AND P POLE M-10672, 62.18 FEET NORTH OF C AND P POLE M-10673,
 JV4320'78.55 FEET SOUTHEAST OF THE NORTHEAST CORNER AND 62.00
 JV4320'FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE MOST EASTERLY
 JV4320'PART OF HOUSE 12722.
 JV4320
 JV4320                          STATION RECOVERY (1995)
 JV4320
 JV4320'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4320'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4557 ***********************************************************************
 JV4557  DESIGNATION -  17126 WSSC 1969
 JV4557  PID         -  JV4557
 JV4557  STATE/COUNTY-  MD/MONTGOMERY
 JV4557  COUNTRY     -  US
 JV4557  USGS QUAD   -  POOLESVILLE (2016)
 JV4557
 JV4557                         *CURRENT SURVEY CONTROL
 JV4557  ______________________________________________________________________
 JV4557* NAD 83(1991) POSITION- 39 11 13.00492(N) 077 24 18.11218(W)   ADJUSTED
 JV4557* NAVD 88 ORTHO HEIGHT -   165.1   (meters)      542.    (feet) VERTCON3
 JV4557  ______________________________________________________________________
 JV4557  GEOID HEIGHT    -        -32.153 (meters)                     GEOID18
 JV4557  LAPLACE CORR    -          5.88  (seconds)                    DEFLEC18
 JV4557  HORZ ORDER      -  SECOND
 JV4557
 JV4557.The horizontal coordinates were established by classical geodetic methods
 JV4557.and adjusted by the National Geodetic Survey in January 1992.
 JV4557
 JV4557.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4557.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4557
 JV4557.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4557.GEOID18 height accuracy estimate available here.
 JV4557
 JV4557.Click photographs - Photos may exist for this station.
 JV4557
 JV4557.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4557
 JV4557. The following values were computed from the NAD 83(1991) position.
 JV4557
 JV4557;                    North         East     Units Scale Factor Converg.
 JV4557;SPC MD       -   168,837.166   365,007.478   MT  0.99996456   -0 15 15.2
 JV4557;SPC MD       -   553,926.60  1,197,528.70   sFT  0.99996456   -0 15 15.2
 JV4557;UTM  18      - 4,340,278.004   292,280.838   MT  1.00013130   -1 31 12.6
 JV4557
 JV4557!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4557!SPC MD       -   0.99997914  x   0.99996456  =   0.99994370
 JV4557!UTM  18      -   0.99997914  x   1.00013130  =   1.00011044
 JV4557
 JV4557:                Primary Azimuth Mark                     Grid Az
 JV4557:SPC MD       -  HEAP                                     073 04 13.8
 JV4557:UTM  18      -  HEAP                                     074 20 11.2
 JV4557
 JV4557_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9228040278(NAD 83)
 JV4557
 JV4557|---------------------------------------------------------------------|
 JV4557| PID    Reference Object                     Distance      Geod. Az  |
 JV4557|                                                           dddmmss.s |
 JV4557| JV4463 HEAP                                APPROX. 2.9 KM 0724858.6 |
 JV4557|---------------------------------------------------------------------|
 JV4557
 JV4557                          SUPERSEDED SURVEY CONTROL
 JV4557
 JV4557  NAD 83(1986)-  39 11 13.00448(N)    077 24 18.12259(W) AD(       ) 2
 JV4557  NAD 27      -  39 11 12.62248(N)    077 24 19.16063(W) AD(       ) 2
 JV4557  NGVD 29 (07/19/86)  165.3    (m)          542.     (f) VERT ANG       
 JV4557
 JV4557.Superseded values are not recommended for survey control.
 JV4557
 JV4557.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4557.See file dsdata.pdf to determine how the superseded data were derived.
 JV4557
 JV4557_MARKER: I = METAL ROD
 JV4557_SETTING: 0 = UNSPECIFIED SETTING
 JV4557_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4557
 JV4557  HISTORY     - Date     Condition        Report By
 JV4557  HISTORY     - 1969     MONUMENTED       WSSC
 JV4557
 JV4557                          STATION DESCRIPTION
 JV4557
 JV4557'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4557'*THE STATION IS ABOUT 1 MILE NORTHEAST OF BEALLSVILLE AND
 JV4557'2-1/4 MILES SOUTHWEST OF BARNESVILLE.
 JV4557'
 JV4557'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 28 AND
 JV4557'ROUTE 109, GO NORTHEAST ON ROUTE 109 FOR 1.2 MILES TO THE
 JV4557'STATION ON THE LEFT.
 JV4557'
 JV4557'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4557'CENTER AND IS 3 INCHES BELOW THE SURFACE.  IT IS 30.83 FEET
 JV4557'SOUTHWEST OF POWER LINE POLE NO. 102, 42.55 FEET SOUTHWEST OF
 JV4557'POWER LINE POLE NO. 102, 37.51 FEET WEST OF A NAIL IN THE
 JV4557'TOP OF A FENCE POST AND IS 8.0 FEET WEST OF THE EDGE OF
 JV4557'THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4549 ***********************************************************************
 JV4549  DESIGNATION -  17128 WSSC 1969
 JV4549  PID         -  JV4549
 JV4549  STATE/COUNTY-  MD/MONTGOMERY
 JV4549  COUNTRY     -  US
 JV4549  USGS QUAD   -  POOLESVILLE (2016)
 JV4549
 JV4549                         *CURRENT SURVEY CONTROL
 JV4549  ______________________________________________________________________
 JV4549* NAD 83(1991) POSITION- 39 12 25.05919(N) 077 23 03.75185(W)   ADJUSTED
 JV4549* NAVD 88 ORTHO HEIGHT -   160.8   (meters)      528.    (feet) VERTCON3
 JV4549  ______________________________________________________________________
 JV4549  GEOID HEIGHT    -        -32.132 (meters)                     GEOID18
 JV4549  LAPLACE CORR    -          5.70  (seconds)                    DEFLEC18
 JV4549  HORZ ORDER      -  SECOND
 JV4549
 JV4549.The horizontal coordinates were established by classical geodetic methods
 JV4549.and adjusted by the National Geodetic Survey in January 1992.
 JV4549
 JV4549.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4549.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4549
 JV4549.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4549.GEOID18 height accuracy estimate available here.
 JV4549
 JV4549.Click photographs - Photos may exist for this station.
 JV4549
 JV4549.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4549
 JV4549. The following values were computed from the NAD 83(1991) position.
 JV4549
 JV4549;                    North         East     Units Scale Factor Converg.
 JV4549;SPC MD       -   171,051.413   366,801.360   MT  0.99996651   -0 14 28.5
 JV4549;SPC MD       -   561,191.18  1,203,414.13   sFT  0.99996651   -0 14 28.5
 JV4549;UTM  18      - 4,342,452.419   294,123.509   MT  1.00012191   -1 30 27.9
 JV4549
 JV4549!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4549!SPC MD       -   0.99997981  x   0.99996651  =   0.99994632
 JV4549!UTM  18      -   0.99997981  x   1.00012191  =   1.00010172
 JV4549
 JV4549:                Primary Azimuth Mark                     Grid Az
 JV4549:SPC MD       -  HEAP                                     145 31 28.3
 JV4549:UTM  18      -  HEAP                                     146 47 27.7
 JV4549
 JV4549_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9412342452(NAD 83)
 JV4549
 JV4549|---------------------------------------------------------------------|
 JV4549| PID    Reference Object                     Distance      Geod. Az  |
 JV4549|                                                           dddmmss.s |
 JV4549| JV4548 17129 WSSC 1969                     349.652 METERS 03407     |
 JV4549| JV4463 HEAP                                APPROX. 1.7 KM 1451659.8 |
 JV4549|---------------------------------------------------------------------|
 JV4549
 JV4549                          SUPERSEDED SURVEY CONTROL
 JV4549
 JV4549  NAD 83(1986)-  39 12 25.05886(N)    077 23 03.76240(W) AD(       ) 2
 JV4549  NAD 27      -  39 12 24.67768(N)    077 23 04.80244(W) AD(       ) 2
 JV4549  NGVD 29 (07/19/86)  161.0    (m)          528.     (f) VERT ANG       
 JV4549
 JV4549.Superseded values are not recommended for survey control.
 JV4549
 JV4549.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4549.See file dsdata.pdf to determine how the superseded data were derived.
 JV4549
 JV4549_MARKER: I = METAL ROD
 JV4549_SETTING: 0 = UNSPECIFIED SETTING
 JV4549_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4549
 JV4549  HISTORY     - Date     Condition        Report By
 JV4549  HISTORY     - 1969     MONUMENTED       WSSC
 JV4549  HISTORY     - 19950718 GOOD             USPSQD
 JV4549
 JV4549                          STATION DESCRIPTION
 JV4549
 JV4549'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4549'THE STATION IS ABOUT 2-1/2 MILES NORTHEAST OF BEALLSVILLE AND
 JV4549'1/4 MILE SOUTHWEST OF BARNSVILLE.
 JV4549'
 JV4549'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 109 AND
 JV4549'THE B AND O RAILROAD GO SOUTHWEST ON ROUTE 109 FOR .25 MILE
 JV4549'TO THE STATION ON THE LEFT.
 JV4549'
 JV4549'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4549'CENTER AND IS 3 INCHES BELOW THE SURFACE.  IT IS 67.21 FEET
 JV4549'SOUTH OF POWER LINE POLE 167, 32.39 FEET NORTH OF POWER LINE
 JV4549'POLE 166, 77.20 FEET SOUTHEAST OF A POWER LINE POLE, 49.53 FEET
 JV4549'EAST OF A 24-INCH CHERRY TREE AND IS 8 FEET EAST OF THE
 JV4549'EAST EDGE OF THE ROAD.
 JV4549
 JV4549                          STATION RECOVERY (1995)
 JV4549
 JV4549'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4549'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4548 ***********************************************************************
 JV4548  DESIGNATION -  17129 WSSC 1969
 JV4548  PID         -  JV4548
 JV4548  STATE/COUNTY-  MD/MONTGOMERY
 JV4548  COUNTRY     -  US
 JV4548  USGS QUAD   -  POOLESVILLE (2016)
 JV4548
 JV4548                         *CURRENT SURVEY CONTROL
 JV4548  ______________________________________________________________________
 JV4548* NAD 83(1991) POSITION- 39 12 34.44558(N) 077 22 55.57715(W)   ADJUSTED
 JV4548* NAVD 88 ORTHO HEIGHT -   150.1   (meters)      492.    (feet) VERTCON3
 JV4548  ______________________________________________________________________
 JV4548  GEOID HEIGHT    -        -32.131 (meters)                     GEOID18
 JV4548  LAPLACE CORR    -          5.71  (seconds)                    DEFLEC18
 JV4548  HORZ ORDER      -  SECOND
 JV4548
 JV4548.The horizontal coordinates were established by classical geodetic methods
 JV4548.and adjusted by the National Geodetic Survey in January 1992.
 JV4548
 JV4548.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4548.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4548
 JV4548.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4548.GEOID18 height accuracy estimate available here.
 JV4548
 JV4548.Click photographs - Photos may exist for this station.
 JV4548
 JV4548.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4548
 JV4548. The following values were computed from the NAD 83(1991) position.
 JV4548
 JV4548;                    North         East     Units Scale Factor Converg.
 JV4548;SPC MD       -   171,340.042   366,998.696   MT  0.99996677   -0 14 23.4
 JV4548;SPC MD       -   562,138.12  1,204,061.56   sFT  0.99996677   -0 14 23.4
 JV4548;UTM  18      - 4,342,736.659   294,327.208   MT  1.00012088   -1 30 23.0
 JV4548
 JV4548!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4548!SPC MD       -   0.99998149  x   0.99996677  =   0.99994826
 JV4548!UTM  18      -   0.99998149  x   1.00012088  =   1.00010237
 JV4548
 JV4548_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9432742736(NAD 83)
 JV4548
 JV4548                          SUPERSEDED SURVEY CONTROL
 JV4548
 JV4548  NAD 83(1986)-  39 12 34.44526(N)    077 22 55.58772(W) AD(       ) 2
 JV4548  NAD 27      -  39 12 34.06420(N)    077 22 56.62798(W) AD(       ) 2
 JV4548  NGVD 29 (07/19/86)  150.3    (m)          493.     (f) VERT ANG       
 JV4548
 JV4548.Superseded values are not recommended for survey control.
 JV4548
 JV4548.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4548.See file dsdata.pdf to determine how the superseded data were derived.
 JV4548
 JV4548_MARKER: B = BOLT
 JV4548_SETTING: 0 = UNSPECIFIED SETTING
 JV4548_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4548
 JV4548  HISTORY     - Date     Condition        Report By
 JV4548  HISTORY     - 1969     MONUMENTED       WSSC
 JV4548  HISTORY     - 19950804 GOOD             USPSQD
 JV4548
 JV4548                          STATION DESCRIPTION
 JV4548
 JV4548'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4548'THE STATION IS ABOUT 2-1/2 MILES NORTHEAST OF BEALLSVILLE 1/4
 JV4548'MILE SOUTHWEST OF BARNSVILLE.
 JV4548'
 JV4548'THE STATION IS LOCATED ON THE SOUTH SIDE OF THE BALTIMORE AND
 JV4548'OHIO RAILROAD BRIDGE OVER ROUTE 109.
 JV4548'
 JV4548'THE STATION MARK IS A BRASS BOLT SET IN THE WOOD PLATFORM.  IT
 JV4548'IS 11.0 FEET EAST OF THE WEST END OF THE WOOD PLATFORM, 4.6
 JV4548'FEET SOUTH OF THE NEAR EDGE OF THE SOUTH TRACK.
 JV4548
 JV4548                          STATION RECOVERY (1995)
 JV4548
 JV4548'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4548'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1418 ***********************************************************************
 HV1418  DESIGNATION -  1713 WSSC
 HV1418  PID         -  HV1418
 HV1418  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1418  COUNTRY     -  US
 HV1418  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1418
 HV1418                         *CURRENT SURVEY CONTROL
 HV1418  ______________________________________________________________________
 HV1418* NAD 83(1986) POSITION- 38 58 26.7    (N) 076 58 59.5    (W)   HD_HELD2
 HV1418* NAVD 88 ORTHO HEIGHT -    21.639 (meters)       70.99  (feet) ADJUSTED
 HV1418  ______________________________________________________________________
 HV1418  GEOID HEIGHT    -        -32.052 (meters)                     GEOID18
 HV1418  DYNAMIC HEIGHT  -         21.628 (meters)       70.96  (feet) COMP
 HV1418  MODELED GRAVITY -    980,103.6   (mgal)                       NAVD 88
 HV1418
 HV1418  VERT ORDER      -  SECOND    CLASS 0
 HV1418
 HV1418.The horizontal coordinates were established by autonomous hand held GPS
 HV1418.observations and have an estimated accuracy of +/- 10 meters.
 HV1418
 HV1418.The orthometric height was determined by differential leveling and
 HV1418.adjusted by the NATIONAL GEODETIC SURVEY
 HV1418.in June 1991.
 HV1418
 HV1418.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1418.GEOID18 height accuracy estimate available here.
 HV1418
 HV1418.Click photographs - Photos may exist for this station.
 HV1418
 HV1418.The dynamic height is computed by dividing the NAVD 88
 HV1418.geopotential number by the normal gravity value computed on the
 HV1418.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1418.degrees latitude (g = 980.6199 gals.).
 HV1418
 HV1418.The modeled gravity was interpolated from observed gravity values.
 HV1418
 HV1418;                    North         East    Units  Estimated Accuracy
 HV1418;SPC MD       -   145,129.      401,456.      MT  (+/- 10 meters HH2 GPS)
 HV1418
 HV1418_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2820115771(NAD 83)
 HV1418
 HV1418                          SUPERSEDED SURVEY CONTROL
 HV1418
 HV1418  NGVD 29 (11/26/84)   21.860  (m)           71.72   (f) ADJUSTED    2 0
 HV1418
 HV1418.Superseded values are not recommended for survey control.
 HV1418
 HV1418.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1418.See file dsdata.pdf to determine how the superseded data were derived.
 HV1418
 HV1418_MARKER: DD = SURVEY DISK
 HV1418_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1418_SP_SET: ABUTMENT
 HV1418_STAMPING: 1713
 HV1418_MARK LOGO: WSSC
 HV1418_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1418
 HV1418  HISTORY     - Date     Condition        Report By
 HV1418  HISTORY     - UNK      MONUMENTED       WSSC
 HV1418  HISTORY     - 1951     GOOD             CGS
 HV1418  HISTORY     - 20040318 GOOD             GEOCAC
 HV1418  HISTORY     - 20121224 GOOD             GEOCAC
 HV1418
 HV1418                          STATION DESCRIPTION
 HV1418
 HV1418'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1418'0.6 MI E FROM TAKOMA PARK.
 HV1418'IN PRINCE GEORGES COUNTY, EAST OF TAKOMA PARK, 0.6 MILE SOUTHEAST
 HV1418'ALONG EAST-WEST HIGHWAY (STATE HIGHWAY 410) FROM ITS
 HV1418'INTERSECTION WITH NEW HAMPSHIRE AVENUE (STATE HIGHWAY 650), AT
 HV1418'THE BRIDGE OVER SLIGO BRANCH, AND ON THE SOUTHWEST END OF THE
 HV1418'NORTHWEST ABUTMENT.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV1418'BRONZE DISK, STAMPED 1713.  NOTE-- OUTSIDE OF THE PARAPET WALL
 HV1418'OR RAILING AT ANGLE FORMED BY THE WING WALL AND THE ABUTMENT.
 HV1418
 HV1418                          STATION RECOVERY (2004)
 HV1418
 HV1418'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV1418'RECOVERED IN GOOD CONDITION.
 HV1418
 HV1418                          STATION RECOVERY (2012)
 HV1418
 HV1418'RECOVERY NOTE BY GEOCACHING 2012 (APC)
 HV1418'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4400 ***********************************************************************
 JV4400  DESIGNATION -  17130 WSSC 1969
 JV4400  PID         -  JV4400
 JV4400  STATE/COUNTY-  MD/MONTGOMERY
 JV4400  COUNTRY     -  US
 JV4400  USGS QUAD   -  ROCKVILLE (2016)
 JV4400
 JV4400                         *CURRENT SURVEY CONTROL
 JV4400  ______________________________________________________________________
 JV4400* NAD 83(1993) POSITION- 39 04 24.40600(N) 077 12 05.84996(W)   ADJUSTED
 JV4400* NAVD 88 ORTHO HEIGHT -   127.7   (meters)      419.    (feet) VERTCON3
 JV4400  ______________________________________________________________________
 JV4400  GEOID HEIGHT    -        -31.701 (meters)                     GEOID18
 JV4400  LAPLACE CORR    -         -0.25  (seconds)                    DEFLEC18
 JV4400  HORZ ORDER      -  SECOND
 JV4400
 JV4400.The horizontal coordinates were established by classical geodetic methods
 JV4400.and adjusted by the National Geodetic Survey in November 1994.
 JV4400
 JV4400.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4400.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4400
 JV4400.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4400.GEOID18 height accuracy estimate available here.
 JV4400
 JV4400.Click photographs - Photos may exist for this station.
 JV4400
 JV4400.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4400
 JV4400. The following values were computed from the NAD 83(1993) position.
 JV4400
 JV4400;                    North         East     Units Scale Factor Converg.
 JV4400;SPC MD       -   156,178.806   382,552.809   MT  0.99995578   -0 07 35.6
 JV4400;SPC MD       -   512,396.63  1,255,092.01   sFT  0.99995578   -0 07 35.6
 JV4400;UTM  18      - 4,327,234.096   309,544.949   MT  1.00004666   -1 23 17.3
 JV4400
 JV4400!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4400!SPC MD       -   0.99998494  x   0.99995578  =   0.99994072
 JV4400!UTM  18      -   0.99998494  x   1.00004666  =   1.00003160
 JV4400
 JV4400:                Primary Azimuth Mark                     Grid Az
 JV4400:SPC MD       -  HUNTING HILL 2                           014 05 48.0
 JV4400:UTM  18      -  HUNTING HILL 2                           015 21 29.7
 JV4400
 JV4400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0954427234(NAD 83)
 JV4400
 JV4400|---------------------------------------------------------------------|
 JV4400| PID    Reference Object                     Distance      Geod. Az  |
 JV4400|                                                           dddmmss.s |
 JV4400| JV4373 HUNTING HILL 2                      APPROX. 1.3 KM 0135812.4 |
 JV4400| JV4364 POTOMAC RADIO STA WGMS NE MAST      APPROX. 5.0 KM 1445724.1 |
 JV4400| JV4365 POTOMAC RADIO STA WGMS SE MAST      APPROX. 5.1 KM 1452742.3 |
 JV4400|---------------------------------------------------------------------|
 JV4400
 JV4400                          SUPERSEDED SURVEY CONTROL
 JV4400
 JV4400  NAD 83(1991)-  39 04 24.40558(N)    077 12 05.85065(W) AD(       ) 2
 JV4400  NAD 83(1986)-  39 04 24.40562(N)    077 12 05.86050(W) AD(       ) 2
 JV4400  NAD 27      -  39 04 24.01530(N)    077 12 06.92241(W) AD(       ) 2
 JV4400  NGVD 29 (07/19/86)  127.9    (m)          420.     (f) VERT ANG       
 JV4400
 JV4400.Superseded values are not recommended for survey control.
 JV4400
 JV4400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4400.See file dsdata.pdf to determine how the superseded data were derived.
 JV4400
 JV4400_MARKER: I = METAL ROD
 JV4400_SETTING: 0 = UNSPECIFIED SETTING
 JV4400_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4400
 JV4400  HISTORY     - Date     Condition        Report By
 JV4400  HISTORY     - 1969     MONUMENTED       WSSC
 JV4400  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV4400
 JV4400                          STATION DESCRIPTION
 JV4400
 JV4400'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4400'THE STATION IS ABOUT 1-1/2 MILES SOUTHEAST OF HUNTING HILL
 JV4400'AND 3 MILES SOUTHWEST OF ROCKVILLE.
 JV4400'
 JV4400'THE STATION IS LOCATED ON THE NORTHEAST CORNER OF SUNSET
 JV4400'DRIVE AND RIDGE DRIVE IN THE GLEN HILL SUBDIVISION.
 JV4400'
 JV4400'THE MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 JV4400'IS 3 INCHES BELOW THE SURFACE.  IT IS 11.03 FEET WEST OF PEPCO
 JV4400'POLE NO. 641765, 34.82 FEET EAST OF THE CENTERLINE OF A WATER
 JV4400'VALVE, AND 9.38 FEET SOUTHEAST OF A NAIL IN THE TOP OF THE POST.
 JV4400
 JV4400                          STATION RECOVERY (2000)
 JV4400
 JV4400'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV4400'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4398 ***********************************************************************
 JV4398  DESIGNATION -  17131 WSSC 1969
 JV4398  PID         -  JV4398
 JV4398  STATE/COUNTY-  MD/MONTGOMERY
 JV4398  COUNTRY     -  US
 JV4398  USGS QUAD   -  ROCKVILLE (2016)
 JV4398
 JV4398                         *CURRENT SURVEY CONTROL
 JV4398  ______________________________________________________________________
 JV4398* NAD 83(1993) POSITION- 39 04 01.31942(N) 077 11 55.39791(W)   ADJUSTED
 JV4398* NAVD 88 ORTHO HEIGHT -   117.3   (meters)      385.    (feet) VERTCON3
 JV4398  ______________________________________________________________________
 JV4398  GEOID HEIGHT    -        -31.702 (meters)                     GEOID18
 JV4398  LAPLACE CORR    -         -0.47  (seconds)                    DEFLEC18
 JV4398  HORZ ORDER      -  SECOND
 JV4398
 JV4398.The horizontal coordinates were established by classical geodetic methods
 JV4398.and adjusted by the National Geodetic Survey in November 1994.
 JV4398
 JV4398.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4398.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4398
 JV4398.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4398.GEOID18 height accuracy estimate available here.
 JV4398
 JV4398.Click photographs - Photos may exist for this station.
 JV4398
 JV4398.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4398
 JV4398. The following values were computed from the NAD 83(1993) position.
 JV4398
 JV4398;                    North         East     Units Scale Factor Converg.
 JV4398;SPC MD       -   155,466.344   382,802.494   MT  0.99995540   -0 07 29.0
 JV4398;SPC MD       -   510,059.16  1,255,911.18   sFT  0.99995540   -0 07 29.0
 JV4398;UTM  18      - 4,326,516.246   309,778.910   MT  1.00004556   -1 23 10.0
 JV4398
 JV4398!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4398!SPC MD       -   0.99998657  x   0.99995540  =   0.99994197
 JV4398!UTM  18      -   0.99998657  x   1.00004556  =   1.00003213
 JV4398
 JV4398:                Primary Azimuth Mark                     Grid Az
 JV4398:SPC MD       -  17130 WSSC 1969                          340 41 12.5
 JV4398:UTM  18      -  17130 WSSC 1969                          341 56 53.5
 JV4398
 JV4398_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0977826516(NAD 83)
 JV4398
 JV4398|---------------------------------------------------------------------|
 JV4398| PID    Reference Object                     Distance      Geod. Az  |
 JV4398|                                                           dddmmss.s |
 JV4398| JV4364 POTOMAC RADIO STA WGMS NE MAST      APPROX. 4.3 KM 1421326.7 |
 JV4398| JV4365 POTOMAC RADIO STA WGMS SE MAST      APPROX. 4.4 KM 1425321.1 |
 JV4398| JV4400 17130 WSSC 1969                     APPROX. 0.8 KM 3403343.5 |
 JV4398|---------------------------------------------------------------------|
 JV4398
 JV4398                          SUPERSEDED SURVEY CONTROL
 JV4398
 JV4398  NAD 83(1991)-  39 04 01.31899(N)    077 11 55.39862(W) AD(       ) 2
 JV4398  NAD 83(1986)-  39 04 01.31903(N)    077 11 55.40848(W) AD(       ) 2
 JV4398  NAD 27      -  39 04 00.92853(N)    077 11 56.47048(W) AD(       ) 2
 JV4398  NGVD 29 (07/19/86)  117.5    (m)          385.     (f) VERT ANG       
 JV4398
 JV4398.Superseded values are not recommended for survey control.
 JV4398
 JV4398.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4398.See file dsdata.pdf to determine how the superseded data were derived.
 JV4398
 JV4398_MARKER: I = METAL ROD
 JV4398_SETTING: 0 = UNSPECIFIED SETTING
 JV4398_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4398
 JV4398  HISTORY     - Date     Condition        Report By
 JV4398  HISTORY     - 1969     MONUMENTED       WSSC
 JV4398  HISTORY     - 20001106 GOOD             USPSQD
 JV4398
 JV4398                          STATION DESCRIPTION
 JV4398
 JV4398'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4398'THE STATION IS ABOUT 1-1/2 MILES SOUTHEAST OF HUNTING HILL
 JV4398'AND 3 MILES SOUTHEAST OF ROCKVILLE.
 JV4398'
 JV4398'THE STATION IS LOCATED ON THE SOUTH SIDE OF WATTS BRANCH ROAD
 JV4398'AT THE INTERSECTION OF VALLEY DRIVE IN THE SUBDIVISION OF
 JV4398'GLEN HILLS.
 JV4398'
 JV4398'THE MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4398'AND IS 1-INCH BELOW THE SURFACE.  IT IS 10.05 FEET EAST OF
 JV4398'PEPCO POLE NO. 629205, 75.21 FEET NORTHEAST OF THE NORTHEAST
 JV4398'CORNER OF A BRICK HOUSE, AND 18.6 FEET SOUTH OF THE SOUTH
 JV4398'EDGE OF WATTS BRANCH ROAD.
 JV4398
 JV4398                          STATION RECOVERY (2000)
 JV4398
 JV4398'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV4398'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4403 ***********************************************************************
 JV4403  DESIGNATION -  17132 WSSC 1969
 JV4403  PID         -  JV4403
 JV4403  STATE/COUNTY-  MD/MONTGOMERY
 JV4403  COUNTRY     -  US
 JV4403  USGS QUAD   -  ROCKVILLE (2016)
 JV4403
 JV4403                         *CURRENT SURVEY CONTROL
 JV4403  ______________________________________________________________________
 JV4403* NAD 83(1993) POSITION- 39 04 19.72272(N) 077 13 29.85920(W)   ADJUSTED
 JV4403* NAVD 88 ORTHO HEIGHT -   124.7   (meters)      409.    (feet) VERTCON3
 JV4403  ______________________________________________________________________
 JV4403  GEOID HEIGHT    -        -31.706 (meters)                     GEOID18
 JV4403  LAPLACE CORR    -          1.10  (seconds)                    DEFLEC18
 JV4403  HORZ ORDER      -  SECOND
 JV4403
 JV4403.The horizontal coordinates were established by classical geodetic methods
 JV4403.and adjusted by the National Geodetic Survey in November 1994.
 JV4403
 JV4403.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4403.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4403
 JV4403.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4403.GEOID18 height accuracy estimate available here.
 JV4403
 JV4403.Click photographs - Photos may exist for this station.
 JV4403
 JV4403.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4403
 JV4403. The following values were computed from the NAD 83(1993) position.
 JV4403
 JV4403;                    North         East     Units Scale Factor Converg.
 JV4403;SPC MD       -   156,039.108   380,533.135   MT  0.99995570   -0 08 28.3
 JV4403;SPC MD       -   511,938.31  1,248,465.79   sFT  0.99995570   -0 08 28.3
 JV4403;UTM  18      - 4,327,138.891   307,522.495   MT  1.00005620   -1 24 10.2
 JV4403
 JV4403!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4403!SPC MD       -   0.99998541  x   0.99995570  =   0.99994111
 JV4403!UTM  18      -   0.99998541  x   1.00005620  =   1.00004161
 JV4403
 JV4403:                Primary Azimuth Mark                     Grid Az
 JV4403:SPC MD       -  ROCKVILLE HUNTING HILL TANK              059 07 52.8
 JV4403:UTM  18      -  ROCKVILLE HUNTING HILL TANK              060 23 34.7
 JV4403
 JV4403_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0752227138(NAD 83)
 JV4403
 JV4403|---------------------------------------------------------------------|
 JV4403| PID    Reference Object                     Distance      Geod. Az  |
 JV4403|                                                           dddmmss.s |
 JV4403| JV4372 ROCKVILLE HUNTING HILL TANK         APPROX. 2.7 KM 0585924.5 |
 JV4403| JV4404 17133 WSSC 1969                     346.665 METERS 20547     |
 JV4403|---------------------------------------------------------------------|
 JV4403
 JV4403                          SUPERSEDED SURVEY CONTROL
 JV4403
 JV4403  NAD 83(1991)-  39 04 19.72222(N)    077 13 29.85978(W) AD(       ) 2
 JV4403  NAD 83(1986)-  39 04 19.72235(N)    077 13 29.86971(W) AD(       ) 2
 JV4403  NAD 27      -  39 04 19.33179(N)    077 13 30.92943(W) AD(       ) 2
 JV4403  NGVD 29 (07/19/86)  124.9    (m)          410.     (f) VERT ANG       
 JV4403
 JV4403.Superseded values are not recommended for survey control.
 JV4403
 JV4403.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4403.See file dsdata.pdf to determine how the superseded data were derived.
 JV4403
 JV4403_MARKER: I = METAL ROD
 JV4403_SETTING: 0 = UNSPECIFIED SETTING
 JV4403_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4403
 JV4403  HISTORY     - Date     Condition        Report By
 JV4403  HISTORY     - 1969     MONUMENTED       WSSC
 JV4403  HISTORY     - 20001106 GOOD             USPSQD
 JV4403
 JV4403                          STATION DESCRIPTION
 JV4403
 JV4403'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4403'THE STATION IS ABOUT 2 MILES SOUTHWEST OF HUNTING HILL AND
 JV4403'ABOUT 1 MILE WEST OF GLEN HILLS.
 JV4403'
 JV4403'TO REACH THE STATION FROM THE INTERSECTION OF TRAVILAH
 JV4403'ROAD AND PINEY MEETINGHOUSE ROAD, GO SOUTH ON PINEY
 JV4403'MEETINGHOUSE ROAD FOR 1.1 MILES TO THE JUNCTION OF BOSWELL
 JV4403'LANE AND THE STATION IS ON THE RIGHT.
 JV4403'
 JV4403'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4403'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS BETWEEN A WIRE
 JV4403'FENCE AND A WOODED AREA AND IS 70.89 FEET SOUTH OF A POWER
 JV4403'POLE, 19.35 FEET EAST OF A 6-INCH OAK, AND 46.86 FEET NORTH
 JV4403'OF A 10-INCH OAK.
 JV4403
 JV4403                          STATION RECOVERY (2000)
 JV4403
 JV4403'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV4403'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4404 ***********************************************************************
 JV4404  DESIGNATION -  17133 WSSC 1969
 JV4404  PID         -  JV4404
 JV4404  STATE/COUNTY-  MD/MONTGOMERY
 JV4404  COUNTRY     -  US
 JV4404  USGS QUAD   -  ROCKVILLE (2016)
 JV4404
 JV4404                         *CURRENT SURVEY CONTROL
 JV4404  ______________________________________________________________________
 JV4404* NAD 83(1993) POSITION- 39 04 09.60069(N) 077 13 36.13267(W)   ADJUSTED
 JV4404* NAVD 88 ORTHO HEIGHT -   124.3   (meters)      408.    (feet) VERTCON3
 JV4404  ______________________________________________________________________
 JV4404  GEOID HEIGHT    -        -31.707 (meters)                     GEOID18
 JV4404  LAPLACE CORR    -          1.13  (seconds)                    DEFLEC18
 JV4404  HORZ ORDER      -  SECOND
 JV4404
 JV4404.The horizontal coordinates were established by classical geodetic methods
 JV4404.and adjusted by the National Geodetic Survey in November 1994.
 JV4404
 JV4404.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4404.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4404
 JV4404.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4404.GEOID18 height accuracy estimate available here.
 JV4404
 JV4404.Click photographs - Photos may exist for this station.
 JV4404
 JV4404.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4404
 JV4404. The following values were computed from the NAD 83(1993) position.
 JV4404
 JV4404;                    North         East     Units Scale Factor Converg.
 JV4404;SPC MD       -   155,727.352   380,381.562   MT  0.99995554   -0 08 32.2
 JV4404;SPC MD       -   510,915.49  1,247,968.51   sFT  0.99995554   -0 08 32.2
 JV4404;UTM  18      - 4,326,830.517   307,364.079   MT  1.00005695   -1 24 13.8
 JV4404
 JV4404!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4404!SPC MD       -   0.99998548  x   0.99995554  =   0.99994102
 JV4404!UTM  18      -   0.99998548  x   1.00005695  =   1.00004243
 JV4404
 JV4404_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0736426830(NAD 83)
 JV4404
 JV4404                          SUPERSEDED SURVEY CONTROL
 JV4404
 JV4404  NAD 83(1991)-  39 04 09.60018(N)    077 13 36.13325(W) AD(       ) 2
 JV4404  NAD 83(1986)-  39 04 09.60030(N)    077 13 36.14314(W) AD(       ) 2
 JV4404  NAD 27      -  39 04 09.20963(N)    077 13 37.20278(W) AD(       ) 2
 JV4404  NGVD 29 (07/19/86)  124.5    (m)          408.     (f) VERT ANG       
 JV4404
 JV4404.Superseded values are not recommended for survey control.
 JV4404
 JV4404.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4404.See file dsdata.pdf to determine how the superseded data were derived.
 JV4404
 JV4404_MARKER: I = METAL ROD
 JV4404_SETTING: 0 = UNSPECIFIED SETTING
 JV4404_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4404
 JV4404  HISTORY     - Date     Condition        Report By
 JV4404  HISTORY     - 1969     MONUMENTED       WSSC
 JV4404  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV4404
 JV4404                          STATION DESCRIPTION
 JV4404
 JV4404'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4404'THE STATION IS ABOUT 2 MILES SOUTHWEST OF HUNTING HILL AND
 JV4404'ABOUT 1 MILE WEST OF GLEN HILLS.
 JV4404'
 JV4404'TO REACH THE STATION FROM THE INTERSECTION OF BOSWELL LANE
 JV4404'AND PINEY MEETINGHOUSE ROAD, GO SOUTHWEST ON PINEY MEETINGHOUSE
 JV4404'ROAD FOR .25 MILES TO THE STATION ON THE RIGHT.
 JV4404'
 JV4404'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4404'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 21.32 FEET SOUTH
 JV4404'OF A POLE, 40.67 FEET NORTH OF A 12-INCH OAK, 8.84 FEET OF
 JV4404'AN 8-INCH OAK.
 JV4404
 JV4404                          STATION RECOVERY (2000)
 JV4404
 JV4404'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV4404'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4397 ***********************************************************************
 JV4397  DESIGNATION -  17134 WSSC 1969
 JV4397  PID         -  JV4397
 JV4397  STATE/COUNTY-  MD/MONTGOMERY
 JV4397  COUNTRY     -  US
 JV4397  USGS QUAD   -  ROCKVILLE (2016)
 JV4397
 JV4397                         *CURRENT SURVEY CONTROL
 JV4397  ______________________________________________________________________
 JV4397* NAD 83(1993) POSITION- 39 03 31.28975(N) 077 10 39.83364(W)   ADJUSTED
 JV4397* NAVD 88 ORTHO HEIGHT -   133.8   (meters)      439.    (feet) VERTCON3
 JV4397  ______________________________________________________________________
 JV4397  GEOID HEIGHT    -        -31.713 (meters)                     GEOID18
 JV4397  LAPLACE CORR    -         -1.23  (seconds)                    DEFLEC18
 JV4397  HORZ ORDER      -  SECOND
 JV4397
 JV4397.The horizontal coordinates were established by classical geodetic methods
 JV4397.and adjusted by the National Geodetic Survey in November 1994.
 JV4397
 JV4397.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4397.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4397
 JV4397.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4397.GEOID18 height accuracy estimate available here.
 JV4397
 JV4397.Click photographs - Photos may exist for this station.
 JV4397
 JV4397.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4397
 JV4397. The following values were computed from the NAD 83(1993) position.
 JV4397
 JV4397;                    North         East     Units Scale Factor Converg.
 JV4397;SPC MD       -   154,536.588   384,617.184   MT  0.99995493   -0 06 41.6
 JV4397;SPC MD       -   507,008.79  1,261,864.88   sFT  0.99995493   -0 06 41.6
 JV4397;UTM  18      - 4,325,546.688   311,572.850   MT  1.00003720   -1 22 21.5
 JV4397
 JV4397!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4397!SPC MD       -   0.99998399  x   0.99995493  =   0.99993892
 JV4397!UTM  18      -   0.99998399  x   1.00003720  =   1.00002119
 JV4397
 JV4397:                Primary Azimuth Mark                     Grid Az
 JV4397:SPC MD       -  HUNTING HILL 2                           328 34 01.9
 JV4397:UTM  18      -  HUNTING HILL 2                           329 49 41.8
 JV4397
 JV4397_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1157225546(NAD 83)
 JV4397
 JV4397|---------------------------------------------------------------------|
 JV4397| PID    Reference Object                     Distance      Geod. Az  |
 JV4397|                                                           dddmmss.s |
 JV4397| JV4396 17135 WSSC 1969                     329.029 METERS 09251     |
 JV4397| JV4373 HUNTING HILL 2                      APPROX. 3.4 KM 3282720.3 |
 JV4397|---------------------------------------------------------------------|
 JV4397
 JV4397                          SUPERSEDED SURVEY CONTROL
 JV4397
 JV4397  NAD 83(1991)-  39 03 31.28930(N)    077 10 39.83437(W) AD(       ) 2
 JV4397  NAD 83(1986)-  39 03 31.28931(N)    077 10 39.84423(W) AD(       ) 2
 JV4397  NAD 27      -  39 03 30.89761(N)    077 10 40.90932(W) AD(       ) 2
 JV4397  NGVD 29 (07/19/86)  134.0    (m)          440.     (f) VERT ANG       
 JV4397
 JV4397.Superseded values are not recommended for survey control.
 JV4397
 JV4397.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4397.See file dsdata.pdf to determine how the superseded data were derived.
 JV4397
 JV4397_MARKER: I = METAL ROD
 JV4397_SETTING: 0 = UNSPECIFIED SETTING
 JV4397_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4397
 JV4397  HISTORY     - Date     Condition        Report By
 JV4397  HISTORY     - 1969     MONUMENTED       WSSC
 JV4397  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV4397
 JV4397                          STATION DESCRIPTION
 JV4397
 JV4397'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4397'THE STATION IS ABOUT 2 MILES SOUTHWEST OF ROCKVILLE AND 1
 JV4397'MILE NORTH OF BEVERLY FARMS.
 JV4397'
 JV4397'THE STATION IS LOCATED ON THE SOUTHEAST CORNER OF ROUTE 189
 JV4397'(FALLS ROAD) AND CHILHAM PLACE AT THE MONTGOMERY SQUARE
 JV4397'SUBDIVISION.
 JV4397'
 JV4397'THE MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4397'AND IS FLUSH WITH THE SURFACE.  IT IS 27.75 FEET WEST OF C AND
 JV4397'P POLE NO. M-16189, 16.50 FEET NORTHEAST OF POLE NO. 612535,
 JV4397'AND 80.34 FEET NORTHWEST OF THE SOUTHWEST CORNER OF HOUSE 2508.
 JV4397
 JV4397                          STATION RECOVERY (2000)
 JV4397
 JV4397'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV4397'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4396 ***********************************************************************
 JV4396  DESIGNATION -  17135 WSSC 1969
 JV4396  PID         -  JV4396
 JV4396  STATE/COUNTY-  MD/MONTGOMERY
 JV4396  COUNTRY     -  US
 JV4396  USGS QUAD   -  ROCKVILLE (2016)
 JV4396
 JV4396                         *CURRENT SURVEY CONTROL
 JV4396  ______________________________________________________________________
 JV4396* NAD 83(1993) POSITION- 39 03 30.75905(N) 077 10 26.16555(W)   ADJUSTED
 JV4396* NAVD 88 ORTHO HEIGHT -   125.4   (meters)      411.    (feet) VERTCON3
 JV4396  ______________________________________________________________________
 JV4396  GEOID HEIGHT    -        -31.715 (meters)                     GEOID18
 JV4396  LAPLACE CORR    -         -1.42  (seconds)                    DEFLEC18
 JV4396  HORZ ORDER      -  SECOND
 JV4396
 JV4396.The horizontal coordinates were established by classical geodetic methods
 JV4396.and adjusted by the National Geodetic Survey in November 1994.
 JV4396
 JV4396.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4396.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4396
 JV4396.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4396.GEOID18 height accuracy estimate available here.
 JV4396
 JV4396.Click photographs - Photos may exist for this station.
 JV4396
 JV4396.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4396
 JV4396. The following values were computed from the NAD 83(1993) position.
 JV4396
 JV4396;                    North         East     Units Scale Factor Converg.
 JV4396;SPC MD       -   154,519.590   384,945.760   MT  0.99995492   -0 06 33.0
 JV4396;SPC MD       -   506,953.02  1,262,942.88   sFT  0.99995492   -0 06 33.0
 JV4396;UTM  18      - 4,325,522.461   311,900.998   MT  1.00003568   -1 22 12.8
 JV4396
 JV4396!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4396!SPC MD       -   0.99998531  x   0.99995492  =   0.99994023
 JV4396!UTM  18      -   0.99998531  x   1.00003568  =   1.00002098
 JV4396
 JV4396_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1190025522(NAD 83)
 JV4396
 JV4396                          SUPERSEDED SURVEY CONTROL
 JV4396
 JV4396  NAD 83(1991)-  39 03 30.75860(N)    077 10 26.16628(W) AD(       ) 2
 JV4396  NAD 83(1986)-  39 03 30.75861(N)    077 10 26.17614(W) AD(       ) 2
 JV4396  NAD 27      -  39 03 30.36689(N)    077 10 27.24166(W) AD(       ) 2
 JV4396  NGVD 29 (07/19/86)  125.6    (m)          412.     (f) VERT ANG       
 JV4396
 JV4396.Superseded values are not recommended for survey control.
 JV4396
 JV4396.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4396.See file dsdata.pdf to determine how the superseded data were derived.
 JV4396
 JV4396_MARKER: I = METAL ROD
 JV4396_SETTING: 0 = UNSPECIFIED SETTING
 JV4396_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4396
 JV4396  HISTORY     - Date     Condition        Report By
 JV4396  HISTORY     - 1969     MONUMENTED       WSSC
 JV4396  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV4396
 JV4396                          STATION DESCRIPTION
 JV4396
 JV4396'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4396'THE STATION IS ABOUT 2 MILES SOUTHWEST OF ROCKVILLE AND 1 MILE
 JV4396'NORTH OF BEVERLY FARMS IN THE SUBDIVISION OF MONTGOMERY SQUARE.
 JV4396'
 JV4396'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 189 (FALLS
 JV4396'ROAD) AND CHILHAM PLACE, GO EAST ON CHILHAM PLACE FOR .4 MILES
 JV4396'TO THE STATION ON THE RIGHT.
 JV4396'
 JV4396'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4396'AND IS 1-INCH BELOW THE SURFACE.  IT IS 9.69 FEET EAST OF POLE
 JV4396'NO. M-12081, 14.06 FEET WEST OF THE CENTERLINE OF A MANHOLE,
 JV4396'41.54 FEET NORTHWEST OF THE NORTHWEST CORNER OF HOUSE 2400,
 JV4396'AND 51.09 FEET NORTHEAST OF THE NORTHEAST CORNER OF HOUSE 2408.
 JV4396
 JV4396                          STATION RECOVERY (2000)
 JV4396
 JV4396'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV4396'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4571 ***********************************************************************
 JV4571  DESIGNATION -  17136 WSSC 1969
 JV4571  PID         -  JV4571
 JV4571  STATE/COUNTY-  MD/MONTGOMERY
 JV4571  COUNTRY     -  US
 JV4571  USGS QUAD   -  POOLESVILLE (2016)
 JV4571
 JV4571                         *CURRENT SURVEY CONTROL
 JV4571  ______________________________________________________________________
 JV4571* NAD 83(1993) POSITION- 39 11 39.75498(N) 077 27 04.83367(W)   ADJUSTED
 JV4571* NAVD 88 ORTHO HEIGHT -   123.0   (meters)      404.    (feet) VERTCON3
 JV4571  ______________________________________________________________________
 JV4571  GEOID HEIGHT    -        -32.322 (meters)                     GEOID18
 JV4571  LAPLACE CORR    -          6.54  (seconds)                    DEFLEC18
 JV4571  HORZ ORDER      -  SECOND
 JV4571
 JV4571.The horizontal coordinates were established by classical geodetic methods
 JV4571.and adjusted by the National Geodetic Survey in November 1994.
 JV4571
 JV4571.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4571.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4571
 JV4571.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4571.GEOID18 height accuracy estimate available here.
 JV4571
 JV4571.Click photographs - Photos may exist for this station.
 JV4571
 JV4571.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4571
 JV4571. The following values were computed from the NAD 83(1993) position.
 JV4571
 JV4571;                    North         East     Units Scale Factor Converg.
 JV4571;SPC MD       -   169,680.830   361,010.520   MT  0.99996527   -0 16 59.8
 JV4571;SPC MD       -   556,694.52  1,184,415.35   sFT  0.99996527   -0 16 59.8
 JV4571;UTM  18      - 4,341,209.949   288,302.796   MT  1.00015184   -1 32 59.0
 JV4571
 JV4571!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4571!SPC MD       -   0.99998578  x   0.99996527  =   0.99995105
 JV4571!UTM  18      -   0.99998578  x   1.00015184  =   1.00013761
 JV4571
 JV4571:                Primary Azimuth Mark                     Grid Az
 JV4571:SPC MD       -  IRON STONE RIDGE 2                       149 06 30.4
 JV4571:UTM  18      -  IRON STONE RIDGE 2                       150 22 29.6
 JV4571
 JV4571_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8830241209(NAD 83)
 JV4571
 JV4571|---------------------------------------------------------------------|
 JV4571| PID    Reference Object                     Distance      Geod. Az  |
 JV4571|                                                           dddmmss.s |
 JV4571| JV4540 IRON STONE RIDGE 2                  APPROX. 1.6 KM 1484930.6 |
 JV4571| JV4572 17137 WSSC 1969                     171.632 METERS 26111     |
 JV4571| JV4542 DICKERSON PEPCO W STACK             APPROX. 2.0 KM 3261141.2 |
 JV4571| JV4541 DICKERSON PEPCO E STACK             APPROX. 2.0 KM 3274832.4 |
 JV4571|---------------------------------------------------------------------|
 JV4571
 JV4571                          SUPERSEDED SURVEY CONTROL
 JV4571
 JV4571  NAD 83(1991)-  39 11 39.75550(N)    077 27 04.83369(W) AD(       ) 2
 JV4571  NAD 83(1986)-  39 11 39.75457(N)    077 27 04.84422(W) AD(       ) 2
 JV4571  NAD 27      -  39 11 39.37343(N)    077 27 05.87734(W) AD(       ) 2
 JV4571  NGVD 29 (07/19/86)  123.2    (m)          404.     (f) VERT ANG       
 JV4571
 JV4571.Superseded values are not recommended for survey control.
 JV4571
 JV4571.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4571.See file dsdata.pdf to determine how the superseded data were derived.
 JV4571
 JV4571_MARKER: I = METAL ROD
 JV4571_SETTING: 0 = UNSPECIFIED SETTING
 JV4571_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4571
 JV4571  HISTORY     - Date     Condition        Report By
 JV4571  HISTORY     - 1969     MONUMENTED       WSSC
 JV4571  HISTORY     - 19950804 MARK NOT FOUND   USPSQD
 JV4571
 JV4571                          STATION DESCRIPTION
 JV4571
 JV4571'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4571'THE STATION IS ABOUT 2-1/2 MILES NORTHEAST OF MARTINSBURG, 2-1/4
 JV4571'MILES NORTHWEST OF BEALLSVILLE.
 JV4571'
 JV4571'TO REACH THE STATION FROM THE INTERSECTION OF WASCHE ROAD AND
 JV4571'MARTINSBURG ROAD, TO SOUTHWEST ON MARTINSBURG ROAD FOR .1 MILE
 JV4571'TO THE STATION ON THE RIGHT.
 JV4571'
 JV4571'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4571'THAT PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 11.9 FEET WEST OF
 JV4571'THE EDGE OF THE ROAD, 67.65 FEET SOUTH OF A 8-INCH TRIPLE ASH,
 JV4571'22.04 FEET SOUTHEAST OF A NAIL IN A FENCE POST, 84.02 FEET NORTH
 JV4571'OF POWER LINE POLE NUMBERED 32.
 JV4571
 JV4571                          STATION RECOVERY (1995)
 JV4571
 JV4571'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4571'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4572 ***********************************************************************
 JV4572  DESIGNATION -  17137 WSSC 1969
 JV4572  PID         -  JV4572
 JV4572  STATE/COUNTY-  MD/MONTGOMERY
 JV4572  COUNTRY     -  US
 JV4572  USGS QUAD   -  POOLESVILLE (2016)
 JV4572
 JV4572                         *CURRENT SURVEY CONTROL
 JV4572  ______________________________________________________________________
 JV4572* NAD 83(1993) POSITION- 39 11 38.90242(N) 077 27 11.90151(W)   ADJUSTED
 JV4572* NAVD 88 ORTHO HEIGHT -   110.2   (meters)      362.    (feet) VERTCON3
 JV4572  ______________________________________________________________________
 JV4572  GEOID HEIGHT    -        -32.328 (meters)                     GEOID18
 JV4572  LAPLACE CORR    -          6.53  (seconds)                    DEFLEC18
 JV4572  HORZ ORDER      -  SECOND
 JV4572
 JV4572.The horizontal coordinates were established by classical geodetic methods
 JV4572.and adjusted by the National Geodetic Survey in November 1994.
 JV4572
 JV4572.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4572.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4572
 JV4572.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4572.GEOID18 height accuracy estimate available here.
 JV4572
 JV4572.Click photographs - Photos may exist for this station.
 JV4572
 JV4572.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4572
 JV4572. The following values were computed from the NAD 83(1993) position.
 JV4572
 JV4572;                    North         East     Units Scale Factor Converg.
 JV4572;SPC MD       -   169,655.380   360,840.791   MT  0.99996524   -0 17 04.2
 JV4572;SPC MD       -   556,611.03  1,183,858.50   sFT  0.99996524   -0 17 04.2
 JV4572;UTM  18      - 4,341,188.252   288,132.514   MT  1.00015273   -1 33 03.4
 JV4572
 JV4572!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4572!SPC MD       -   0.99998778  x   0.99996524  =   0.99995303
 JV4572!UTM  18      -   0.99998778  x   1.00015273  =   1.00014051
 JV4572
 JV4572_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8813241188(NAD 83)
 JV4572
 JV4572                          SUPERSEDED SURVEY CONTROL
 JV4572
 JV4572  NAD 83(1991)-  39 11 38.90296(N)    077 27 11.90153(W) AD(       ) 2
 JV4572  NAD 83(1986)-  39 11 38.90201(N)    077 27 11.91208(W) AD(       ) 2
 JV4572  NAD 27      -  39 11 38.52069(N)    077 27 12.94495(W) AD(       ) 2
 JV4572  NGVD 29 (07/19/86)  110.4    (m)          362.     (f) VERT ANG       
 JV4572
 JV4572.Superseded values are not recommended for survey control.
 JV4572
 JV4572.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4572.See file dsdata.pdf to determine how the superseded data were derived.
 JV4572
 JV4572_MARKER: I = METAL ROD
 JV4572_SETTING: 0 = UNSPECIFIED SETTING
 JV4572_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4572
 JV4572  HISTORY     - Date     Condition        Report By
 JV4572  HISTORY     - 1969     MONUMENTED       WSSC
 JV4572  HISTORY     - 19950804 MARK NOT FOUND   USPSQD
 JV4572
 JV4572                          STATION DESCRIPTION
 JV4572
 JV4572'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4572'THE STATION IS ABOUT 2-1/2 MILE NORTHEAST OF MARTINSBURG, 2-1/4
 JV4572'MILES NORTHWEST OF BEALLSVILLE.
 JV4572'
 JV4572'TO REACH THE STATION FROM THE INTERSECTION OF WASCHE ROAD AND
 JV4572'MARTINSBURG ROAD GO SOUTHWEST ON MARTINSBURG ROAD FOR .2 MILE
 JV4572'TO THE STATION ON THE LEFT.
 JV4572'
 JV4572'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4572'FLUSH WITH THE SURFACE.  IT IS 38.55 FEET EAST OF POWER LINE POLE
 JV4572'34, 14.40 FEET SOUTHWEST OF A 15-INCH WILLOW TREE, 5.34 FEET
 JV4572'NORTHWEST OF THE SOUTHWEST CORNER OF A STONE POST.
 JV4572
 JV4572                          STATION RECOVERY (1995)
 JV4572
 JV4572'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4572'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4573 ***********************************************************************
 JV4573  DESIGNATION -  17138 WSSC 1969
 JV4573  PID         -  JV4573
 JV4573  STATE/COUNTY-  MD/MONTGOMERY
 JV4573  COUNTRY     -  US
 JV4573  USGS QUAD   -  POOLESVILLE (2016)
 JV4573
 JV4573                         *CURRENT SURVEY CONTROL
 JV4573  ______________________________________________________________________
 JV4573* NAD 83(1993) POSITION- 39 10 51.20467(N) 077 27 58.13914(W)   ADJUSTED
 JV4573* NAVD 88 ORTHO HEIGHT -   108.2   (meters)      355.    (feet) VERTCON3
 JV4573  ______________________________________________________________________
 JV4573  GEOID HEIGHT    -        -32.340 (meters)                     GEOID18
 JV4573  LAPLACE CORR    -          6.16  (seconds)                    DEFLEC18
 JV4573  HORZ ORDER      -  SECOND
 JV4573
 JV4573.The horizontal coordinates were established by classical geodetic methods
 JV4573.and adjusted by the National Geodetic Survey in November 1994.
 JV4573
 JV4573.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4573.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4573
 JV4573.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4573.GEOID18 height accuracy estimate available here.
 JV4573
 JV4573.Click photographs - Photos may exist for this station.
 JV4573
 JV4573.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4573
 JV4573. The following values were computed from the NAD 83(1993) position.
 JV4573
 JV4573;                    North         East     Units Scale Factor Converg.
 JV4573;SPC MD       -   168,190.105   359,723.769   MT  0.99996399   -0 17 33.3
 JV4573;SPC MD       -   551,803.70  1,180,193.73   sFT  0.99996399   -0 17 33.3
 JV4573;UTM  18      - 4,339,747.745   286,983.165   MT  1.00015875   -1 33 31.1
 JV4573
 JV4573!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4573!SPC MD       -   0.99998810  x   0.99996399  =   0.99995209
 JV4573!UTM  18      -   0.99998810  x   1.00015875  =   1.00014685
 JV4573
 JV4573:                Primary Azimuth Mark                     Grid Az
 JV4573:SPC MD       -  IRON STONE RIDGE 2                       087 51 29.9
 JV4573:UTM  18      -  IRON STONE RIDGE 2                       089 07 27.7
 JV4573
 JV4573_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8698339747(NAD 83)
 JV4573
 JV4573|---------------------------------------------------------------------|
 JV4573| PID    Reference Object                     Distance      Geod. Az  |
 JV4573|                                                           dddmmss.s |
 JV4573| JV4542 DICKERSON PEPCO W STACK             APPROX. 3.2 KM 0030316.7 |
 JV4573| JV4541 DICKERSON PEPCO E STACK             APPROX. 3.2 KM 0032812.6 |
 JV4573| JV4540 IRON STONE RIDGE 2                  APPROX. 2.1 KM 0873356.6 |
 JV4573|---------------------------------------------------------------------|
 JV4573
 JV4573                          SUPERSEDED SURVEY CONTROL
 JV4573
 JV4573  NAD 83(1991)-  39 10 51.20529(N)    077 27 58.13930(W) AD(       ) 2
 JV4573  NAD 83(1986)-  39 10 51.20423(N)    077 27 58.14968(W) AD(       ) 2
 JV4573  NAD 27      -  39 10 50.82326(N)    077 27 59.18051(W) AD(       ) 2
 JV4573  NGVD 29 (07/19/86)  108.4    (m)          356.     (f) VERT ANG       
 JV4573
 JV4573.Superseded values are not recommended for survey control.
 JV4573
 JV4573.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4573.See file dsdata.pdf to determine how the superseded data were derived.
 JV4573
 JV4573_MARKER: I = METAL ROD
 JV4573_SETTING: 0 = UNSPECIFIED SETTING
 JV4573_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4573
 JV4573  HISTORY     - Date     Condition        Report By
 JV4573  HISTORY     - 1969     MONUMENTED       WSSC
 JV4573
 JV4573                          STATION DESCRIPTION
 JV4573
 JV4573'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4573'THE STATION IS ABOUT 1-1/4 MILES NORTHEAST OF MARTINSBURG, 3
 JV4573'MILES WEST OF BEALLSVILLE.
 JV4573'
 JV4573'TO REACH THE STATION FROM THE INTERSECTION OF MARTINSBURG ROAD
 JV4573'AND ROUTE 107, GO NORTH ON MARTINSBURG ROAD FOR 1.5 MILES TO THE
 JV4573'STATION ON THE RIGHT.
 JV4573'
 JV4573'THE STATION IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 JV4573'IS FLUSH WITH THE SURFACE.  IT IS 59.80 FEET EAST OF A POWER
 JV4573'LINE POLE, 30.65 FEET SOUTHEAST OF A POWER LINE POLE NO. 20,
 JV4573'35.95 FEET SOUTHEAST OF A NAIL IN A FENCE POST AND 18.68 FEET
 JV4573'SOUTHWEST OF A NAIL IN A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4561 ***********************************************************************
 JV4561  DESIGNATION -  17139 WSSC 1969
 JV4561  PID         -  JV4561
 JV4561  STATE/COUNTY-  MD/MONTGOMERY
 JV4561  COUNTRY     -  US
 JV4561  USGS QUAD   -  POOLESVILLE (2016)
 JV4561
 JV4561                         *CURRENT SURVEY CONTROL
 JV4561  ______________________________________________________________________
 JV4561* NAD 83(1993) POSITION- 39 10 26.18090(N) 077 24 57.09213(W)   ADJUSTED
 JV4561* NAVD 88 ORTHO HEIGHT -   152.9   (meters)      502.    (feet) VERTCON3
 JV4561  ______________________________________________________________________
 JV4561  GEOID HEIGHT    -        -32.163 (meters)                     GEOID18
 JV4561  LAPLACE CORR    -          5.94  (seconds)                    DEFLEC18
 JV4561  HORZ ORDER      -  SECOND
 JV4561
 JV4561.The horizontal coordinates were established by classical geodetic methods
 JV4561.and adjusted by the National Geodetic Survey in November 1994.
 JV4561
 JV4561.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4561.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4561
 JV4561.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4561.GEOID18 height accuracy estimate available here.
 JV4561
 JV4561.Click photographs - Photos may exist for this station.
 JV4561
 JV4561.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4561
 JV4561. The following values were computed from the NAD 83(1993) position.
 JV4561
 JV4561;                    North         East     Units Scale Factor Converg.
 JV4561;SPC MD       -   167,397.453   364,065.446   MT  0.99996335   -0 15 39.6
 JV4561;SPC MD       -   549,203.14  1,194,438.05   sFT  0.99996335   -0 15 39.6
 JV4561;UTM  18      - 4,338,859.210   291,307.067   MT  1.00013629   -1 31 35.7
 JV4561
 JV4561!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4561!SPC MD       -   0.99998106  x   0.99996335  =   0.99994441
 JV4561!UTM  18      -   0.99998106  x   1.00013629  =   1.00011735
 JV4561
 JV4561_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9130738859(NAD 83)
 JV4561
 JV4561                          SUPERSEDED SURVEY CONTROL
 JV4561
 JV4561  NAD 83(1991)-  39 10 26.18120(N)    077 24 57.09237(W) AD(       ) 2
 JV4561  NAD 83(1986)-  39 10 26.18054(N)    077 24 57.10260(W) AD(       ) 2
 JV4561  NAD 27      -  39 10 25.79860(N)    077 24 58.13930(W) AD(       ) 2
 JV4561  NGVD 29 (07/19/86)  153.1    (m)          502.     (f) VERT ANG       
 JV4561
 JV4561.Superseded values are not recommended for survey control.
 JV4561
 JV4561.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4561.See file dsdata.pdf to determine how the superseded data were derived.
 JV4561
 JV4561_MARKER: I = METAL ROD
 JV4561_SETTING: 0 = UNSPECIFIED SETTING
 JV4561_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4561
 JV4561  HISTORY     - Date     Condition        Report By
 JV4561  HISTORY     - 1969     MONUMENTED       WSSC
 JV4561  HISTORY     - 19950718 MARK NOT FOUND   USPSQD
 JV4561
 JV4561                          STATION DESCRIPTION
 JV4561
 JV4561'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4561'THE STATION IS ABOUT 1-1/2 MILES NORTH OF POOLESVILLE, 1/2 MILE
 JV4561'SOUTH OF BEALLSVILLE.
 JV4561'
 JV4561'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 109 AND
 JV4561'ROUTE 28, GO SOUTHWEST FOR .5 MILE TO THE STATION ON THE LEFT.
 JV4561'
 JV4561'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4561'THAT IS 2 INCHES BELOW THE SURFACE.  IT IS 42.98 FEET NORTHWEST
 JV4561'OF POWER LINE POLE 58, 75.60 FEET SOUTHWEST OF A POWER LINE POLE,
 JV4561'20.15 FEET SOUTHEAST OF A 12-INCH OAK, 24.50 FEET NORTHEAST OF A
 JV4561'12-INCH TWIN OAK.
 JV4561
 JV4561                          STATION RECOVERY (1995)
 JV4561
 JV4561'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4561'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1026 ***********************************************************************
 JV1026  DESIGNATION -  1714 WSSC
 JV1026  PID         -  JV1026
 JV1026  STATE/COUNTY-  MD/MONTGOMERY
 JV1026  COUNTRY     -  US
 JV1026  USGS QUAD   -  BELTSVILLE (2016)
 JV1026
 JV1026                         *CURRENT SURVEY CONTROL
 JV1026  ______________________________________________________________________
 JV1026* NAD 83(1986) POSITION- 39 04 29.9    (N) 076 57 28.6    (W)   HD_HELD2
 JV1026* NAVD 88 ORTHO HEIGHT -   125.66  (+/-2cm)      412.3   (feet) VERTCON3
 JV1026  ______________________________________________________________________
 JV1026  GEOID HEIGHT    -        -32.040 (meters)                     GEOID18
 JV1026  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1026
 JV1026.The horizontal coordinates were established by autonomous hand held GPS
 JV1026.observations and have an estimated accuracy of +/- 10 meters.
 JV1026
 JV1026.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1026.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1026
 JV1026.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1026.GEOID18 height accuracy estimate available here.
 JV1026
 JV1026.The vertical order pertains to the NGVD 29 superseded value.
 JV1026
 JV1026.Click photographs - Photos may exist for this station.
 JV1026
 JV1026;                    North         East    Units  Estimated Accuracy
 JV1026;SPC MD       -   156,330.      403,639.      MT  (+/- 10 meters HH2 GPS)
 JV1026
 JV1026_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3063026920(NAD 83)
 JV1026
 JV1026                          SUPERSEDED SURVEY CONTROL
 JV1026
 JV1026  NGVD 29 (11/26/84)  125.867  (m)          412.95   (f) ADJUSTED    2 0
 JV1026
 JV1026.Superseded values are not recommended for survey control.
 JV1026
 JV1026.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1026.See file dsdata.pdf to determine how the superseded data were derived.
 JV1026
 JV1026_MARKER: DD = SURVEY DISK
 JV1026_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1026_SP_SET: FOUNDATION
 JV1026_STAMPING: 1714
 JV1026_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1026_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1026+SATELLITE: SATELLITE OBSERVATIONS - September 18, 2011
 JV1026
 JV1026  HISTORY     - Date     Condition        Report By
 JV1026  HISTORY     - UNK      MONUMENTED       WSSC
 JV1026  HISTORY     - 1939     GOOD             WSSC
 JV1026  HISTORY     - 20040103 GOOD             GEOCAC
 JV1026  HISTORY     - 20110918 GOOD             NGS
 JV1026
 JV1026                          STATION DESCRIPTION
 JV1026
 JV1026'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1026'AT FAIRLAND.
 JV1026'AT THE INTERSECTION OF THE FAIRLAND-BELTSVILLE ROAD AND COLUMBIA
 JV1026'ROAD, ON THE EAST SIDE OF COLUMBIA ROAD, AT A BRICK SCHOOL
 JV1026'BUILDING, AND IN THE SOUTHWEST CORNER OF THE CONCRETE FOUNDATION.
 JV1026
 JV1026                          STATION RECOVERY (2004)
 JV1026
 JV1026'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV1026'STATION DISK IS LOCATED IN A CONCRETE STEP AT THE NORTHWEST ENTRANCE
 JV1026'TO THE FORMER SCHOOL, NOW KNOWN AS FAIRLAND CENTER. THE ENTRANCE FACES
 JV1026'OLD COLUMBIA PIKE AND IS LOCATED BETWEEN THE OLD RED BRICK AND NEWER
 JV1026'TAN BRICK SECTIONS OF THE BUILDING. THE STATION DISK IS MOUNTED
 JV1026'HORIZONTALLY IN THE NORTH CORNER OF THE STEP.
 JV1026
 JV1026                          STATION RECOVERY (2011)
 JV1026
 JV1026'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 JV1026'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4562 ***********************************************************************
 JV4562  DESIGNATION -  17140 WSSC 1969
 JV4562  PID         -  JV4562
 JV4562  STATE/COUNTY-  MD/MONTGOMERY
 JV4562  COUNTRY     -  US
 JV4562  USGS QUAD   -  POOLESVILLE (2016)
 JV4562
 JV4562                         *CURRENT SURVEY CONTROL
 JV4562  ______________________________________________________________________
 JV4562* NAD 83(1993) POSITION- 39 10 16.75994(N) 077 24 59.00115(W)   ADJUSTED
 JV4562* NAVD 88 ORTHO HEIGHT -   146.6   (meters)      481.    (feet) VERTCON3
 JV4562  ______________________________________________________________________
 JV4562  GEOID HEIGHT    -        -32.160 (meters)                     GEOID18
 JV4562  LAPLACE CORR    -          5.92  (seconds)                    DEFLEC18
 JV4562  HORZ ORDER      -  SECOND
 JV4562
 JV4562.The horizontal coordinates were established by classical geodetic methods
 JV4562.and adjusted by the National Geodetic Survey in November 1994.
 JV4562
 JV4562.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4562.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4562
 JV4562.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4562.GEOID18 height accuracy estimate available here.
 JV4562
 JV4562.Click photographs - Photos may exist for this station.
 JV4562
 JV4562.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4562
 JV4562. The following values were computed from the NAD 83(1993) position.
 JV4562
 JV4562;                    North         East     Units Scale Factor Converg.
 JV4562;SPC MD       -   167,107.146   364,018.299   MT  0.99996311   -0 15 40.8
 JV4562;SPC MD       -   548,250.69  1,194,283.37   sFT  0.99996311   -0 15 40.8
 JV4562;UTM  18      - 4,338,569.966   291,253.511   MT  1.00013657   -1 31 36.6
 JV4562
 JV4562!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4562!SPC MD       -   0.99998205  x   0.99996311  =   0.99994516
 JV4562!UTM  18      -   0.99998205  x   1.00013657  =   1.00011861
 JV4562
 JV4562:                Primary Azimuth Mark                     Grid Az
 JV4562:SPC MD       -  IRON STONE RIDGE 2                       298 15 08.9
 JV4562:UTM  18      -  IRON STONE RIDGE 2                       299 31 04.7
 JV4562
 JV4562_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9125338569(NAD 83)
 JV4562
 JV4562|---------------------------------------------------------------------|
 JV4562| PID    Reference Object                     Distance      Geod. Az  |
 JV4562|                                                           dddmmss.s |
 JV4562| JV4561 17139 WSSC 1969                     294.120 METERS 00858     |
 JV4562| JV4540 IRON STONE RIDGE 2                  APPROX. 2.5 KM 2975928.1 |
 JV4562|---------------------------------------------------------------------|
 JV4562
 JV4562                          SUPERSEDED SURVEY CONTROL
 JV4562
 JV4562  NAD 83(1991)-  39 10 16.76025(N)    077 24 59.00141(W) AD(       ) 2
 JV4562  NAD 83(1986)-  39 10 16.75958(N)    077 24 59.01161(W) AD(       ) 2
 JV4562  NAD 27      -  39 10 16.37750(N)    077 25 00.04831(W) AD(       ) 2
 JV4562  NGVD 29 (07/19/86)  146.8    (m)          482.     (f) VERT ANG       
 JV4562
 JV4562.Superseded values are not recommended for survey control.
 JV4562
 JV4562.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4562.See file dsdata.pdf to determine how the superseded data were derived.
 JV4562
 JV4562_MARKER: I = METAL ROD
 JV4562_SETTING: 0 = UNSPECIFIED SETTING
 JV4562_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4562
 JV4562  HISTORY     - Date     Condition        Report By
 JV4562  HISTORY     - 1969     MONUMENTED       WSSC
 JV4562  HISTORY     - 19950718 MARK NOT FOUND   USPSQD
 JV4562
 JV4562                          STATION DESCRIPTION
 JV4562
 JV4562'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4562'THE STATION IS ABOUT 1-1/2 MILES NORTH OF POOLESVILLE, 1/2
 JV4562'MILE SOUTH OF BEALLSVILLE.
 JV4562'
 JV4562'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 109 AND
 JV4562'ROUTE 28, GO .7 MILE SOUTHWEST OF ROUTE 109 TO THE STATION ON
 JV4562'THE LEFT.
 JV4562'
 JV4562'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4562'FLUSH WITH THE SURFACE.  IT IS 49.04 FEET SOUTHEAST OF A POWER
 JV4562'LINE POLE, 57.58 FEET SOUTH OF POWER LINE POLE 53, 99.64 FEET
 JV4562'NORTH OF POWER LINE POLE 52, AND 5.4 FEET EAST OF THE EDGE OF
 JV4562'THE ROAD.
 JV4562
 JV4562                          STATION RECOVERY (1995)
 JV4562
 JV4562'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4562'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4493 ***********************************************************************
 HV4493  DESIGNATION -  17141 WSSC 1969
 HV4493  PID         -  HV4493
 HV4493  STATE/COUNTY-  MD/MONTGOMERY
 HV4493  COUNTRY     -  US
 HV4493  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4493
 HV4493                         *CURRENT SURVEY CONTROL
 HV4493  ______________________________________________________________________
 HV4493* NAD 83(1993) POSITION- 38 57 24.58534(N) 077 05 30.71298(W)   ADJUSTED
 HV4493* NAVD 88 ORTHO HEIGHT -    87.3   (meters)      286.    (feet) VERTCON3
 HV4493  ______________________________________________________________________
 HV4493  GEOID HEIGHT    -        -31.911 (meters)                     GEOID18
 HV4493  LAPLACE CORR    -         -2.31  (seconds)                    DEFLEC18
 HV4493  HORZ ORDER      -  SECOND
 HV4493
 HV4493.The horizontal coordinates were established by classical geodetic methods
 HV4493.and adjusted by the National Geodetic Survey in November 1994.
 HV4493
 HV4493.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4493.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4493
 HV4493.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4493.GEOID18 height accuracy estimate available here.
 HV4493
 HV4493.Click photographs - Photos may exist for this station.
 HV4493
 HV4493.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4493
 HV4493. The following values were computed from the NAD 83(1993) position.
 HV4493
 HV4493;                    North         East     Units Scale Factor Converg.
 HV4493;SPC MD       -   143,217.844   392,037.649   MT  0.99995084   -0 03 27.6
 HV4493;SPC MD       -   469,873.88  1,286,210.19   sFT  0.99995084   -0 03 27.6
 HV4493;UTM  18      - 4,314,066.792   318,743.221   MT  1.00000456   -1 18 56.1
 HV4493
 HV4493!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4493!SPC MD       -   0.99999131  x   0.99995084  =   0.99994215
 HV4493!UTM  18      -   0.99999131  x   1.00000456  =   0.99999587
 HV4493
 HV4493:                Primary Azimuth Mark                     Grid Az
 HV4493:SPC MD       -  KENWOOD                                  314 39 19.1
 HV4493:UTM  18      -  KENWOOD                                  315 54 47.6
 HV4493
 HV4493_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1874314066(NAD 83)
 HV4493
 HV4493|---------------------------------------------------------------------|
 HV4493| PID    Reference Object                     Distance      Geod. Az  |
 HV4493|                                                           dddmmss.s |
 HV4493| HV4481 WASHINGTON TV STA WTTG TOWER        APPROX. 0.8 KM 0943734.3 |
 HV4493| HV4464 KENWOOD                             APPROX. 1.1 KM 3143551.5 |
 HV4493| HV4105 BETHESDA RAD STA WJMD MAST          APPROX. 2.9 KM 3181750.1 |
 HV4493|---------------------------------------------------------------------|
 HV4493
 HV4493                          SUPERSEDED SURVEY CONTROL
 HV4493
 HV4493  NAD 83(1991)-  38 57 24.58472(N)    077 05 30.71423(W) AD(       ) 2
 HV4493  NAD 83(1986)-  38 57 24.58433(N)    077 05 30.72415(W) AD(       ) 2
 HV4493  NAD 27      -  38 57 24.18645(N)    077 05 31.79706(W) AD(       ) 2
 HV4493  NGVD 29 (07/19/86)   87.5    (m)          287.     (f) VERT ANG       
 HV4493
 HV4493.Superseded values are not recommended for survey control.
 HV4493
 HV4493.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4493.See file dsdata.pdf to determine how the superseded data were derived.
 HV4493
 HV4493_MARKER: B = BOLT
 HV4493_SETTING: 0 = UNSPECIFIED SETTING
 HV4493_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4493
 HV4493  HISTORY     - Date     Condition        Report By
 HV4493  HISTORY     - 1969     MONUMENTED       WSSC
 HV4493  HISTORY     - 20020311 MARK NOT FOUND   USPSQD
 HV4493
 HV4493                          STATION DESCRIPTION
 HV4493
 HV4493'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4493'THE STATION IS ABOUT 3 MILES EAST OF GLEN ECHO AND 2 MILES
 HV4493'SOUTH OF BETHESDA.
 HV4493'
 HV4493'THE STATION IS ON THE SOUTHEAST CORNER OF RIVER ROAD (ROUTE 190)
 HV4493'AND BROOKDALE ROAD.
 HV4493'
 HV4493'THE STATION MARK IS A BRASS BOLT IN THE SOUTHWEST CORNER OF A
 HV4493'CONCRETE CATCH BASIN 40.0 FEET EAST OF THE CENTERLINE OF
 HV4493'BROOKDALE ROAD.
 HV4493
 HV4493                          STATION RECOVERY (2002)
 HV4493
 HV4493'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV4493'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4472 ***********************************************************************
 JV4472  DESIGNATION -  17142 WSSC 1969
 JV4472  PID         -  JV4472
 JV4472  STATE/COUNTY-  MD/MONTGOMERY
 JV4472  COUNTRY     -  US
 JV4472  USGS QUAD   -  GERMANTOWN (2016)
 JV4472
 JV4472                         *CURRENT SURVEY CONTROL
 JV4472  ______________________________________________________________________
 JV4472* NAD 83(1991) POSITION- 39 08 52.38509(N) 077 19 09.91069(W)   ADJUSTED
 JV4472* NAVD 88 ORTHO HEIGHT -   128.3   (meters)      421.    (feet) VERTCON3
 JV4472  ______________________________________________________________________
 JV4472  GEOID HEIGHT    -        -31.898 (meters)                     GEOID18
 JV4472  LAPLACE CORR    -          4.28  (seconds)                    DEFLEC18
 JV4472  HORZ ORDER      -  SECOND
 JV4472
 JV4472.The horizontal coordinates were established by classical geodetic methods
 JV4472.and adjusted by the National Geodetic Survey in January 1992.
 JV4472
 JV4472.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4472.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4472
 JV4472.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4472.GEOID18 height accuracy estimate available here.
 JV4472
 JV4472.Click photographs - Photos may exist for this station.
 JV4472
 JV4472.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4472
 JV4472. The following values were computed from the NAD 83(1991) position.
 JV4472
 JV4472;                    North         East     Units Scale Factor Converg.
 JV4472;SPC MD       -   164,471.498   372,388.648   MT  0.99996109   -0 12 01.7
 JV4472;SPC MD       -   539,603.57  1,221,745.09   sFT  0.99996109   -0 12 01.7
 JV4472;UTM  18      - 4,335,749.753   299,564.913   MT  1.00009469   -1 27 53.3
 JV4472
 JV4472!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4472!SPC MD       -   0.99998488  x   0.99996109  =   0.99994597
 JV4472!UTM  18      -   0.99998488  x   1.00009469  =   1.00007957
 JV4472
 JV4472:                Primary Azimuth Mark                     Grid Az
 JV4472:SPC MD       -  KING                                     077 38 05.0
 JV4472:UTM  18      -  KING                                     078 53 56.6
 JV4472
 JV4472_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9956435749(NAD 83)
 JV4472
 JV4472|---------------------------------------------------------------------|
 JV4472| PID    Reference Object                     Distance      Geod. Az  |
 JV4472|                                                           dddmmss.s |
 JV4472| JV4460 KING                                APPROX. 2.3 KM 0772603.3 |
 JV4472| JV4461 BROWNSTOWN PEPCO MICROWAVE          APPROX. 2.5 KM 1164604.8 |
 JV4472| JV4473 17143                               362.818 METERS 25318     |
 JV4472|---------------------------------------------------------------------|
 JV4472
 JV4472                          SUPERSEDED SURVEY CONTROL
 JV4472
 JV4472  NAD 83(1986)-  39 08 52.38487(N)    077 19 09.92083(W) AD(       ) 2
 JV4472  NAD 27      -  39 08 51.99976(N)    077 19 10.96846(W) AD(       ) 2
 JV4472  NGVD 29 (07/19/86)  128.5    (m)          422.     (f) VERT ANG       
 JV4472
 JV4472.Superseded values are not recommended for survey control.
 JV4472
 JV4472.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4472.See file dsdata.pdf to determine how the superseded data were derived.
 JV4472
 JV4472_MARKER: I = METAL ROD
 JV4472_SETTING: 0 = UNSPECIFIED SETTING
 JV4472_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4472
 JV4472  HISTORY     - Date     Condition        Report By
 JV4472  HISTORY     - 1969     MONUMENTED       WSSC
 JV4472
 JV4472                          STATION DESCRIPTION
 JV4472
 JV4472'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4472'THE STATION IS ABOUT 2 MILES NORTHEAST OF DAWSONVILLE AND 2-1/2
 JV4472'MILES SOUTHWEST OF OLD GERMANTOWN.
 JV4472'
 JV4472'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 117 AND
 JV4472'SCHAEFFER ROAD, GO SOUTHWEST ON SCHAEFFER ROAD FOR 2.5 MILES
 JV4472'TO THE STATION ON THE RIGHT.
 JV4472'
 JV4472'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4472'AND IS FLUSH WITH THE SURFACE.  IT IS OPPOSITE A GRAY HOUSE AND
 JV4472'IS 50.48 FEET NORTH OF A C AND P POLE NO. 59, 32.36 FEET WEST
 JV4472'OF POLE NO. 623632, AND 28.87 FEET SOUTH OF A 24-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4473 ***********************************************************************
 JV4473  DESIGNATION -  17143
 JV4473  PID         -  JV4473
 JV4473  STATE/COUNTY-  MD/MONTGOMERY
 JV4473  COUNTRY     -  US
 JV4473  USGS QUAD   -  GERMANTOWN (2016)
 JV4473
 JV4473                         *CURRENT SURVEY CONTROL
 JV4473  ______________________________________________________________________
 JV4473* NAD 83(1991) POSITION- 39 08 49.00490(N) 077 19 24.38296(W)   ADJUSTED
 JV4473* NAVD 88 ORTHO HEIGHT -   119.4   (meters)      392.    (feet) VERTCON3
 JV4473  ______________________________________________________________________
 JV4473  GEOID HEIGHT    -        -31.907 (meters)                     GEOID18
 JV4473  LAPLACE CORR    -          4.32  (seconds)                    DEFLEC18
 JV4473  HORZ ORDER      -  SECOND
 JV4473
 JV4473.The horizontal coordinates were established by classical geodetic methods
 JV4473.and adjusted by the National Geodetic Survey in January 1992.
 JV4473
 JV4473.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4473.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4473
 JV4473.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4473.GEOID18 height accuracy estimate available here.
 JV4473
 JV4473.Click photographs - Photos may exist for this station.
 JV4473
 JV4473.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4473
 JV4473. The following values were computed from the NAD 83(1991) position.
 JV4473
 JV4473;                    North         East     Units Scale Factor Converg.
 JV4473;SPC MD       -   164,368.487   372,040.776   MT  0.99996102   -0 12 10.8
 JV4473;SPC MD       -   539,265.61  1,220,603.78   sFT  0.99996102   -0 12 10.8
 JV4473;UTM  18      - 4,335,654.430   299,214.805   MT  1.00009642   -1 28 02.3
 JV4473
 JV4473!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4473!SPC MD       -   0.99998628  x   0.99996102  =   0.99994730
 JV4473!UTM  18      -   0.99998628  x   1.00009642  =   1.00008269
 JV4473
 JV4473_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9921435654(NAD 83)
 JV4473
 JV4473                          SUPERSEDED SURVEY CONTROL
 JV4473
 JV4473  NAD 83(1986)-  39 08 49.00467(N)    077 19 24.39310(W) AD(       ) 2
 JV4473  NAD 27      -  39 08 48.61954(N)    077 19 25.44028(W) AD(       ) 2
 JV4473  NGVD 29 (07/19/86)  119.6    (m)          392.     (f) VERT ANG       
 JV4473
 JV4473.Superseded values are not recommended for survey control.
 JV4473
 JV4473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4473.See file dsdata.pdf to determine how the superseded data were derived.
 JV4473
 JV4473
 JV4473  HISTORY     - Date     Condition        Report By
 JV4473  HISTORY     - 1969     MONUMENTED       WSSC
 JV4473  HISTORY     - 20190528 MARK NOT FOUND   NGS
 JV4473
 JV4473                          STATION DESCRIPTION
 JV4473
 JV4473'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4473'THE STATION IS ABOUT 2 MILES NORTHEAST OF DAWSONVILLE AND 2-1/2
 JV4473'MILES SOUTHWEST OF OLD GERMANTOWN.
 JV4473'
 JV4473'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 117 AND
 JV4473'SCHAEFFER ROAD, GO SOUTHWEST ON SCHAEFFER ROAD FOR 2.75 MILES TO
 JV4473'A SHARP CURVE IN THE ROAD AND THE STATION IS ON THE LEFT.
 JV4473'
 JV4473'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4473'AND IS FLUSH WITH THE SURFACE.  IT IS 44.98 FEET SOUTHEAST OF
 JV4473'POLE NO. 623636, 65.38 FEET SOUTHWEST OF A TWIN 6-INCH LOCUST,
 JV4473'AND 11.37 FEET NORTH OF A NAIL IN THE TOP OF A FENCE POST.
 JV4473
 JV4473                          STATION RECOVERY (2019)
 JV4473
 JV4473'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV4473'UNABLE TO LOCATE FROM THE DIRECTIONS GIVEN IN THE ORIGINAL TEXT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4391 ***********************************************************************
 JV4391  DESIGNATION -  17144 WSSC 1969
 JV4391  PID         -  JV4391
 JV4391  STATE/COUNTY-  MD/MONTGOMERY
 JV4391  COUNTRY     -  US
 JV4391  USGS QUAD   -  ROCKVILLE (2016)
 JV4391
 JV4391                         *CURRENT SURVEY CONTROL
 JV4391  ______________________________________________________________________
 JV4391* NAD 83(1993) POSITION- 39 05 40.15889(N) 077 08 28.34892(W)   ADJUSTED
 JV4391* NAVD 88 ORTHO HEIGHT -   132.9   (meters)      436.    (feet) VERTCON3
 JV4391  ______________________________________________________________________
 JV4391  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 JV4391  LAPLACE CORR    -         -2.05  (seconds)                    DEFLEC18
 JV4391  HORZ ORDER      -  SECOND
 JV4391
 JV4391.The horizontal coordinates were established by classical geodetic methods
 JV4391.and adjusted by the National Geodetic Survey in November 1994.
 JV4391
 JV4391.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4391.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4391
 JV4391.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4391.GEOID18 height accuracy estimate available here.
 JV4391
 JV4391.Click photographs - Photos may exist for this station.
 JV4391
 JV4391.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4391
 JV4391. The following values were computed from the NAD 83(1993) position.
 JV4391
 JV4391;                    North         East     Units Scale Factor Converg.
 JV4391;SPC MD       -   158,504.958   387,784.471   MT  0.99995711   -0 05 19.1
 JV4391;SPC MD       -   520,028.35  1,272,256.22   sFT  0.99995711   -0 05 19.1
 JV4391;UTM  18      - 4,329,444.651   314,826.977   MT  1.00002222   -1 21 02.3
 JV4391
 JV4391!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4391!SPC MD       -   0.99998413  x   0.99995711  =   0.99994124
 JV4391!UTM  18      -   0.99998413  x   1.00002222  =   1.00000635
 JV4391
 JV4391:                Primary Azimuth Mark                     Grid Az
 JV4391:SPC MD       -  LAWN                                     066 33 12.8
 JV4391:UTM  18      -  LAWN                                     067 48 56.0
 JV4391
 JV4391_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1482629444(NAD 83)
 JV4391
 JV4391|---------------------------------------------------------------------|
 JV4391| PID    Reference Object                     Distance      Geod. Az  |
 JV4391|                                                           dddmmss.s |
 JV4391| JV4362 LAWN                                APPROX. 0.7 KM 0662753.7 |
 JV4391| JV4344 ROCKVILLE E MUN TANK                APPROX. 1.4 KM 1760603.2 |
 JV4391| JV4393 17145 WSSC 1969                     277.365 METERS 22507     |
 JV4391|---------------------------------------------------------------------|
 JV4391
 JV4391                          SUPERSEDED SURVEY CONTROL
 JV4391
 JV4391  NAD 83(1991)-  39 05 40.15858(N)    077 08 28.34941(W) AD(       ) 2
 JV4391  NAD 83(1986)-  39 05 40.15849(N)    077 08 28.35919(W) AD(       ) 2
 JV4391  NAD 27      -  39 05 39.76890(N)    077 08 29.42610(W) AD(       ) 2
 JV4391  NGVD 29 (07/19/86)  133.1    (m)          437.     (f) VERT ANG       
 JV4391
 JV4391.Superseded values are not recommended for survey control.
 JV4391
 JV4391.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4391.See file dsdata.pdf to determine how the superseded data were derived.
 JV4391
 JV4391_MARKER: I = METAL ROD
 JV4391_SETTING: 0 = UNSPECIFIED SETTING
 JV4391_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4391
 JV4391  HISTORY     - Date     Condition        Report By
 JV4391  HISTORY     - 1969     MONUMENTED       WSSC
 JV4391
 JV4391                          STATION DESCRIPTION
 JV4391
 JV4391'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4391'THE STATION IS ABOUT 1 MILE NORTHWEST OF ROCKVILLE AND 2 MILES
 JV4391'SOUTHEAST OF DERWOOD.
 JV4391'
 JV4391'THE STATION IS LOCATED IN THE BEANTOWN SECTION OF ROCKVILLE
 JV4391'ON THE SOUTH SIDE OF SOUTH LAWN LANE ABOUT 150 FEET NORTHWEST OF
 JV4391'LOFTSRAND LANE AT A SHARP CURVE IN THE ROAD.
 JV4391'
 JV4391'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4391'AND IS 54.23 FEET SOUTH OF PEPCO POLE NO. 612974, 32.98 FEET
 JV4391'NORTH OF THE NORTHWEST CORNER OF A BRICK BUILDING, 82.13 FEET
 JV4391'NORTHWEST OF THE NORTHEAST CORNER OF A LOADING DOCK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4393 ***********************************************************************
 JV4393  DESIGNATION -  17145 WSSC 1969
 JV4393  PID         -  JV4393
 JV4393  STATE/COUNTY-  MD/MONTGOMERY
 JV4393  COUNTRY     -  US
 JV4393  USGS QUAD   -  ROCKVILLE (2016)
 JV4393
 JV4393                         *CURRENT SURVEY CONTROL
 JV4393  ______________________________________________________________________
 JV4393* NAD 83(1993) POSITION- 39 05 33.81264(N) 077 08 36.52774(W)   ADJUSTED
 JV4393* NAVD 88 ORTHO HEIGHT -   129.3   (meters)      424.    (feet) VERTCON3
 JV4393  ______________________________________________________________________
 JV4393  GEOID HEIGHT    -        -31.732 (meters)                     GEOID18
 JV4393  LAPLACE CORR    -         -1.98  (seconds)                    DEFLEC18
 JV4393  HORZ ORDER      -  SECOND
 JV4393
 JV4393.The horizontal coordinates were established by classical geodetic methods
 JV4393.and adjusted by the National Geodetic Survey in November 1994.
 JV4393
 JV4393.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4393.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4393
 JV4393.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4393.GEOID18 height accuracy estimate available here.
 JV4393
 JV4393.Click photographs - Photos may exist for this station.
 JV4393
 JV4393.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4393
 JV4393. The following values were computed from the NAD 83(1993) position.
 JV4393
 JV4393;                    North         East     Units Scale Factor Converg.
 JV4393;SPC MD       -   158,309.567   387,587.628   MT  0.99995699   -0 05 24.2
 JV4393;SPC MD       -   519,387.30  1,271,610.41   sFT  0.99995699   -0 05 24.2
 JV4393;UTM  18      - 4,329,253.630   314,625.866   MT  1.00002314   -1 21 07.3
 JV4393
 JV4393!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4393!SPC MD       -   0.99998470  x   0.99995699  =   0.99994169
 JV4393!UTM  18      -   0.99998470  x   1.00002314  =   1.00000783
 JV4393
 JV4393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1462529253(NAD 83)
 JV4393
 JV4393                          SUPERSEDED SURVEY CONTROL
 JV4393
 JV4393  NAD 83(1991)-  39 05 33.81233(N)    077 08 36.52823(W) AD(       ) 2
 JV4393  NAD 83(1986)-  39 05 33.81225(N)    077 08 36.53802(W) AD(       ) 2
 JV4393  NAD 27      -  39 05 33.42254(N)    077 08 37.60464(W) AD(       ) 2
 JV4393  NGVD 29 (07/19/86)  129.5    (m)          425.     (f) VERT ANG       
 JV4393
 JV4393.Superseded values are not recommended for survey control.
 JV4393
 JV4393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4393.See file dsdata.pdf to determine how the superseded data were derived.
 JV4393
 JV4393_MARKER: I = METAL ROD
 JV4393_SETTING: 0 = UNSPECIFIED SETTING
 JV4393_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4393
 JV4393  HISTORY     - Date     Condition        Report By
 JV4393  HISTORY     - 1969     MONUMENTED       WSSC
 JV4393
 JV4393                          STATION DESCRIPTION
 JV4393
 JV4393'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4393'THE STATION IS ABOUT 1 MILE NORTHWEST OF ROCKVILLE AND 2 MILES
 JV4393'SOUTHEAST OF DERWOOD.
 JV4393'
 JV4393'THE STATION IS LOCATED IN THE BEANTOWN SECTION OF ROCKVILLE AND
 JV4393'ON THE EAST SIDE OF NORTH HORNERS LANE ABOUT 75 FEET NORTH OF
 JV4393'LINCOLN AVENUE.
 JV4393'
 JV4393'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4393'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 37.19 FEET SOUTH OF
 JV4393'PEPCO POLE NO. 69381, 60.42 FEET NORTHWEST OF PEPCO POLE
 JV4393'NO. 69380, AND IS 1.6 FEET EAST OF THE EAST EDGE OF THE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4438 ***********************************************************************
 JV4438  DESIGNATION -  17148 WSSC 1969
 JV4438  PID         -  JV4438
 JV4438  STATE/COUNTY-  MD/MONTGOMERY
 JV4438  COUNTRY     -  US
 JV4438  USGS QUAD   -  GAITHERSBURG (2016)
 JV4438
 JV4438                         *CURRENT SURVEY CONTROL
 JV4438  ______________________________________________________________________
 JV4438* NAD 83(1993) POSITION- 39 13 12.17812(N) 077 11 17.51824(W)   ADJUSTED
 JV4438* NAVD 88 ORTHO HEIGHT -   148.8   (meters)      488.    (feet) VERTCON3
 JV4438  ______________________________________________________________________
 JV4438  GEOID HEIGHT    -        -31.791 (meters)                     GEOID18
 JV4438  LAPLACE CORR    -          1.18  (seconds)                    DEFLEC18
 JV4438  HORZ ORDER      -  SECOND
 JV4438
 JV4438.The horizontal coordinates were established by classical geodetic methods
 JV4438.and adjusted by the National Geodetic Survey in November 1994.
 JV4438
 JV4438.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4438.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4438
 JV4438.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4438.GEOID18 height accuracy estimate available here.
 JV4438
 JV4438.Click photographs - Photos may exist for this station.
 JV4438
 JV4438.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4438
 JV4438. The following values were computed from the NAD 83(1993) position.
 JV4438
 JV4438;                    North         East     Units Scale Factor Converg.
 JV4438;SPC MD       -   172,451.315   383,748.105   MT  0.99996785   -0 07 05.2
 JV4438;SPC MD       -   565,784.02  1,259,013.57   sFT  0.99996785   -0 07 05.2
 JV4438;UTM  18      - 4,343,477.613   311,098.967   MT  1.00003938   -1 23 02.4
 JV4438
 JV4438!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4438!SPC MD       -   0.99998164  x   0.99996785  =   0.99994949
 JV4438!UTM  18      -   0.99998164  x   1.00003938  =   1.00002102
 JV4438
 JV4438:                Primary Azimuth Mark                     Grid Az
 JV4438:SPC MD       -  17506 WSSC 1969                          190 38 08.9
 JV4438:UTM  18      -  17506 WSSC 1969                          191 54 06.1
 JV4438
 JV4438_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1109843477(NAD 83)
 JV4438
 JV4438|---------------------------------------------------------------------|
 JV4438| PID    Reference Object                     Distance      Geod. Az  |
 JV4438|                                                           dddmmss.s |
 JV4438| JV4439 17506 WSSC 1969                     APPROX. 0.8 KM 1903103.7 |
 JV4438| JV4455 GERMANTOWN AEC TANK                 APPROX. 7.5 KM 2314707.1 |
 JV4438|---------------------------------------------------------------------|
 JV4438
 JV4438                          SUPERSEDED SURVEY CONTROL
 JV4438
 JV4438  NAD 83(1991)-  39 13 12.17793(N)    077 11 17.51835(W) AD(       ) 2
 JV4438  NAD 83(1986)-  39 13 12.17778(N)    077 11 17.52838(W) AD(       ) 2
 JV4438  NAD 27      -  39 13 11.79562(N)    077 11 18.59044(W) AD(       ) 2
 JV4438  NGVD 29 (07/19/86)  149.0    (m)          489.     (f) VERT ANG       
 JV4438
 JV4438.Superseded values are not recommended for survey control.
 JV4438
 JV4438.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4438.See file dsdata.pdf to determine how the superseded data were derived.
 JV4438
 JV4438_MARKER: I = METAL ROD
 JV4438_SETTING: 0 = UNSPECIFIED SETTING
 JV4438_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4438
 JV4438  HISTORY     - Date     Condition        Report By
 JV4438  HISTORY     - 1969     MONUMENTED       WSSC
 JV4438
 JV4438                          STATION DESCRIPTION
 JV4438
 JV4438'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4438'THE STATION IS ABOUT 2-1/2 MILES WEST OF LAYTONSVILLE AND 1/2
 JV4438'MILE NORTH OF GOSHEN.
 JV4438'
 JV4438'TO REACH THE STATION FROM THE INTERSECTION OF GOSHEN SCHOOL
 JV4438'ROAD AND BLUNT ROAD, GO NORTHEAST ON GOSHEN SCHOOL ROAD FOR .4
 JV4438'MILE TO THE STATION ON THE LEFT.
 JV4438'
 JV4438'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4438'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 19.45 FEET NORTH OF
 JV4438'POLE 10, 36.35 FEET NORTHWEST OF C AND P POLE 10, 18.75 FEET
 JV4438'SOUTHEAST OF A 12-INCH CEDAR TREE, AND 12.57 FEET SOUTH OF A
 JV4438'10-INCH LOCUST TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4440 ***********************************************************************
 JV4440  DESIGNATION -  17149 WSSC 1969
 JV4440  PID         -  JV4440
 JV4440  STATE/COUNTY-  MD/MONTGOMERY
 JV4440  COUNTRY     -  US
 JV4440  USGS QUAD   -  GAITHERSBURG (2016)
 JV4440
 JV4440                         *CURRENT SURVEY CONTROL
 JV4440  ______________________________________________________________________
 JV4440* NAD 83(1993) POSITION- 39 12 05.73126(N) 077 11 30.36768(W)   ADJUSTED
 JV4440* NAVD 88 ORTHO HEIGHT -   128.2   (meters)      421.    (feet) VERTCON3
 JV4440  ______________________________________________________________________
 JV4440  GEOID HEIGHT    -        -31.779 (meters)                     GEOID18
 JV4440  LAPLACE CORR    -          1.28  (seconds)                    DEFLEC18
 JV4440  HORZ ORDER      -  SECOND
 JV4440
 JV4440.The horizontal coordinates were established by classical geodetic methods
 JV4440.and adjusted by the National Geodetic Survey in November 1994.
 JV4440
 JV4440.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4440.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4440
 JV4440.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4440.GEOID18 height accuracy estimate available here.
 JV4440
 JV4440.Click photographs - Photos may exist for this station.
 JV4440
 JV4440.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4440
 JV4440. The following values were computed from the NAD 83(1993) position.
 JV4440
 JV4440;                    North         East     Units Scale Factor Converg.
 JV4440;SPC MD       -   170,402.890   383,435.577   MT  0.99996597   -0 07 13.3
 JV4440;SPC MD       -   559,063.48  1,257,988.22   sFT  0.99996597   -0 07 13.3
 JV4440;UTM  18      - 4,341,436.442   310,741.244   MT  1.00004105   -1 23 08.6
 JV4440
 JV4440!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4440!SPC MD       -   0.99998487  x   0.99996597  =   0.99995084
 JV4440!UTM  18      -   0.99998487  x   1.00004105  =   1.00002592
 JV4440
 JV4440_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1074141436(NAD 83)
 JV4440
 JV4440                          SUPERSEDED SURVEY CONTROL
 JV4440
 JV4440  NAD 83(1991)-  39 12 05.73107(N)    077 11 30.36777(W) AD(       ) 2
 JV4440  NAD 83(1986)-  39 12 05.73091(N)    077 11 30.37775(W) AD(       ) 2
 JV4440  NAD 27      -  39 12 05.34787(N)    077 11 31.43999(W) AD(       ) 2
 JV4440  NGVD 29 (07/19/86)  128.4    (m)          421.     (f) VERT ANG       
 JV4440
 JV4440.Superseded values are not recommended for survey control.
 JV4440
 JV4440.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4440.See file dsdata.pdf to determine how the superseded data were derived.
 JV4440
 JV4440_MARKER: I = METAL ROD
 JV4440_SETTING: 0 = UNSPECIFIED SETTING
 JV4440_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4440
 JV4440  HISTORY     - Date     Condition        Report By
 JV4440  HISTORY     - 1969     MONUMENTED       WSSC
 JV4440
 JV4440                          STATION DESCRIPTION
 JV4440
 JV4440'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4440'THE STATION IS ABOUT 1/2 MILE SOUTHWEST OF GOSHEN AND 3
 JV4440'MILES SOUTHEAST OF BRINK.
 JV4440'
 JV4440'TO REACH THE STATION FROM THE INTERSECTION OF BRINK ROAD AND
 JV4440'GOSHEN ROAD, GO WEST ON BRINK ROAD FOR .3 MILES TO THE STATION
 JV4440'ON THE LEFT.
 JV4440'
 JV4440'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4440'CENTER AND IS 3 INCHES BELOW THE SURFACE.  IT IS 85.98 FEET
 JV4440'EAST OF POLE NO. 648849, 74.80 FEET WEST OF POLE NO. 644613,
 JV4440'38.03 FEET NORTHWEST OF A HUB TACK IN THE TOP OF A FENCE POST
 JV4440'AND 21.2 FEET SOUTH OF THE CENTERLINE OF BRINK ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2700 ***********************************************************************
 JV2700  DESIGNATION -  1715
 JV2700  PID         -  JV2700
 JV2700  STATE/COUNTY-  MD/MONTGOMERY
 JV2700  COUNTRY     -  US
 JV2700  USGS QUAD   -  ROCKVILLE (2016)
 JV2700
 JV2700                         *CURRENT SURVEY CONTROL
 JV2700  ______________________________________________________________________
 JV2700* NAD 83(1986) POSITION- 39 04 47.61   (N) 077 08 36.08   (W)   HD_HELD1
 JV2700* NAVD 88 ORTHO HEIGHT -   132.24  (+/-2cm)      433.9   (feet) VERTCON3
 JV2700  ______________________________________________________________________
 JV2700  GEOID HEIGHT    -        -31.735 (meters)                     GEOID18
 JV2700  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2700
 JV2700.The horizontal coordinates were determined by differentially corrected
 JV2700.hand held GPS observations or other comparable positioning techniques
 JV2700.and have an estimated accuracy of +/- 3 meters.
 JV2700
 JV2700.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2700.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2700
 JV2700.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2700.GEOID18 height accuracy estimate available here.
 JV2700
 JV2700.The vertical order pertains to the NGVD 29 superseded value.
 JV2700
 JV2700.Click photographs - Photos may exist for this station.
 JV2700
 JV2700;                    North         East    Units  Estimated Accuracy
 JV2700;SPC MD       -   156,884.8     387,596.2     MT  (+/- 3 meters HH1 GPS) 
 JV2700
 JV2700_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1460327828(NAD 83)
 JV2700
 JV2700                          SUPERSEDED SURVEY CONTROL
 JV2700
 JV2700  NGVD 29 (11/26/84)  132.457  (m)          434.57   (f) ADJUSTED    2 0
 JV2700
 JV2700.Superseded values are not recommended for survey control.
 JV2700
 JV2700.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2700.See file dsdata.pdf to determine how the superseded data were derived.
 JV2700
 JV2700_MARKER: DD = SURVEY DISK
 JV2700_SETTING: 0 = UNSPECIFIED SETTING
 JV2700_SP_SET: IRON PIPE
 JV2700_STAMPING: 1715
 JV2700_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2700
 JV2700  HISTORY     - Date     Condition        Report By
 JV2700  HISTORY     - UNK      MONUMENTED       WSSC
 JV2700  HISTORY     - 1939     GOOD             WSSC
 JV2700  HISTORY     - 20020125 MARK NOT FOUND   MDSHA
 JV2700
 JV2700                          STATION DESCRIPTION
 JV2700
 JV2700'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2700'AT ROCKVILLE.
 JV2700'ON ROCKVILLE PIKE, ABOUT 300 FEET SOUTHEAST OF THE CITY LIMITS,
 JV2700'NEAR THE JUNCTION OF A STREET, ON THE WEST SIDE OF THE ROAD, 74.6
 JV2700'FEET NORTHWEST ACROSS THE HIGHWAY FROM A 10-INCH MAPLE TREE, 49
 JV2700'FEET SOUTHEAST OF TELEPHONE POLE 384, 48.6 FEET WEST ACROSS THE
 JV2700'HIGHWAY FROM ANOTHER POLE, 14.7 FEET NORTHEAST OF A GUY POLE,
 JV2700'AND UNDER A WATER-METER COVER.
 JV2700
 JV2700                          STATION RECOVERY (2002)
 JV2700
 JV2700'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV2700'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4429 ***********************************************************************
 JV4429  DESIGNATION -  17150 WSSC 1969
 JV4429  PID         -  JV4429
 JV4429  STATE/COUNTY-  MD/MONTGOMERY
 JV4429  COUNTRY     -  US
 JV4429  USGS QUAD   -  GAITHERSBURG (2016)
 JV4429
 JV4429                         *CURRENT SURVEY CONTROL
 JV4429  ______________________________________________________________________
 JV4429* NAD 83(1993) POSITION- 39 13 31.51555(N) 077 08 09.23103(W)   ADJUSTED
 JV4429* NAVD 88 ORTHO HEIGHT -   176.0   (meters)      577.    (feet) VERTCON3
 JV4429  ______________________________________________________________________
 JV4429  GEOID HEIGHT    -        -31.776 (meters)                     GEOID18
 JV4429  LAPLACE CORR    -         -0.36  (seconds)                    DEFLEC18
 JV4429  HORZ ORDER      -  SECOND
 JV4429
 JV4429.The horizontal coordinates were established by classical geodetic methods
 JV4429.and adjusted by the National Geodetic Survey in November 1994.
 JV4429
 JV4429.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4429.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4429
 JV4429.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4429.GEOID18 height accuracy estimate available here.
 JV4429
 JV4429.Click photographs - Photos may exist for this station.
 JV4429
 JV4429.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4429
 JV4429. The following values were computed from the NAD 83(1993) position.
 JV4429
 JV4429;                    North         East     Units Scale Factor Converg.
 JV4429;SPC MD       -   173,039.621   388,265.508   MT  0.99996842   -0 05 07.1
 JV4429;SPC MD       -   567,714.16  1,273,834.42   sFT  0.99996842   -0 05 07.1
 JV4429;UTM  18      - 4,343,966.011   315,628.539   MT  1.00001856   -1 21 03.8
 JV4429
 JV4429!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4429!SPC MD       -   0.99997737  x   0.99996842  =   0.99994579
 JV4429!UTM  18      -   0.99997737  x   1.00001856  =   0.99999593
 JV4429
 JV4429:                Primary Azimuth Mark                     Grid Az
 JV4429:SPC MD       -  LAYTON                                   201 32 50.9
 JV4429:UTM  18      -  LAYTON                                   202 48 47.6
 JV4429
 JV4429_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1562843966(NAD 83)
 JV4429
 JV4429|---------------------------------------------------------------------|
 JV4429| PID    Reference Object                     Distance      Geod. Az  |
 JV4429|                                                           dddmmss.s |
 JV4429| JV4425 LAYTON                              APPROX. 1.6 KM 2012743.8 |
 JV4429|---------------------------------------------------------------------|
 JV4429
 JV4429                          SUPERSEDED SURVEY CONTROL
 JV4429
 JV4429  NAD 83(1991)-  39 13 31.51547(N)    077 08 09.23117(W) AD(       ) 2
 JV4429  NAD 83(1986)-  39 13 31.51531(N)    077 08 09.24117(W) AD(       ) 2
 JV4429  NAD 27      -  39 13 31.13301(N)    077 08 10.30915(W) AD(       ) 2
 JV4429  NGVD 29 (07/19/86)  176.2    (m)          578.     (f) VERT ANG       
 JV4429
 JV4429.Superseded values are not recommended for survey control.
 JV4429
 JV4429.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4429.See file dsdata.pdf to determine how the superseded data were derived.
 JV4429
 JV4429_MARKER: I = METAL ROD
 JV4429_SETTING: 0 = UNSPECIFIED SETTING
 JV4429_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4429
 JV4429  HISTORY     - Date     Condition        Report By
 JV4429  HISTORY     - 1969     MONUMENTED       WSSC
 JV4429
 JV4429                          STATION DESCRIPTION
 JV4429
 JV4429'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4429'THE STATION IS ABOUT 1 MILE NORTHEAST OF LAYTONSVILLE AND
 JV4429'2 MILES SOUTH OF ETCHISON.
 JV4429'
 JV4429'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 108 AND
 JV4429'ROUTE 420 IN LAYTONSVILLE, GO NORTH ON ROUTE 108 FOR .9 MILES
 JV4429'TO A SIDE ROAD RIGHT (GRIFFITH ROAD).  TURN RIGHT AND GO EAST
 JV4429'ON GRIFFITH ROAD FOR .4 MILES AND THE STATION IS ON THE RIGHT.
 JV4429'
 JV4429'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4429'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 26.27 FEET
 JV4429'WEST OF C AND P POLE NO. 12, 48.58 FEET SOUTHWEST OF PEPCO
 JV4429'POLE NO. 623398, AND 62.67 FEET SOUTHEAST OF THE SOUTHEAST
 JV4429'CORNER OF A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4428 ***********************************************************************
 JV4428  DESIGNATION -  17151 WSSC 1969
 JV4428  PID         -  JV4428
 JV4428  STATE/COUNTY-  MD/MONTGOMERY
 JV4428  COUNTRY     -  US
 JV4428  USGS QUAD   -  GAITHERSBURG (2016)
 JV4428
 JV4428                         *CURRENT SURVEY CONTROL
 JV4428  ______________________________________________________________________
 JV4428* NAD 83(1993) POSITION- 39 13 33.59258(N) 077 07 46.83057(W)   ADJUSTED
 JV4428* NAVD 88 ORTHO HEIGHT -   158.9   (meters)      521.    (feet) VERTCON3
 JV4428  ______________________________________________________________________
 JV4428  GEOID HEIGHT    -        -31.778 (meters)                     GEOID18
 JV4428  LAPLACE CORR    -         -0.62  (seconds)                    DEFLEC18
 JV4428  HORZ ORDER      -  SECOND
 JV4428
 JV4428.The horizontal coordinates were established by classical geodetic methods
 JV4428.and adjusted by the National Geodetic Survey in November 1994.
 JV4428
 JV4428.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4428.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4428
 JV4428.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4428.GEOID18 height accuracy estimate available here.
 JV4428
 JV4428.Click photographs - Photos may exist for this station.
 JV4428
 JV4428.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4428
 JV4428. The following values were computed from the NAD 83(1993) position.
 JV4428
 JV4428;                    North         East     Units Scale Factor Converg.
 JV4428;SPC MD       -   173,102.891   388,802.887   MT  0.99996848   -0 04 53.0
 JV4428;SPC MD       -   567,921.73  1,275,597.47   sFT  0.99996848   -0 04 53.0
 JV4428;UTM  18      - 4,344,017.397   316,167.210   MT  1.00001612   -1 20 49.7
 JV4428
 JV4428!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4428!SPC MD       -   0.99998006  x   0.99996848  =   0.99994854
 JV4428!UTM  18      -   0.99998006  x   1.00001612  =   0.99999618
 JV4428
 JV4428_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1616744017(NAD 83)
 JV4428
 JV4428                          SUPERSEDED SURVEY CONTROL
 JV4428
 JV4428  NAD 83(1991)-  39 13 33.59251(N)    077 07 46.83072(W) AD(       ) 2
 JV4428  NAD 83(1986)-  39 13 33.59236(N)    077 07 46.84071(W) AD(       ) 2
 JV4428  NAD 27      -  39 13 33.21006(N)    077 07 47.90939(W) AD(       ) 2
 JV4428  NGVD 29 (07/19/86)  159.1    (m)          522.     (f) VERT ANG       
 JV4428
 JV4428.Superseded values are not recommended for survey control.
 JV4428
 JV4428.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4428.See file dsdata.pdf to determine how the superseded data were derived.
 JV4428
 JV4428_MARKER: I = METAL ROD
 JV4428_SETTING: 0 = UNSPECIFIED SETTING
 JV4428_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4428
 JV4428  HISTORY     - Date     Condition        Report By
 JV4428  HISTORY     - 1969     MONUMENTED       WSSC
 JV4428
 JV4428                          STATION DESCRIPTION
 JV4428
 JV4428'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4428'THE STATION IS ABOUT 1 MILE NORTHEAST OF LAYTONSVILLE AND
 JV4428'2 MILES SOUTH OF ETCHISON.
 JV4428'
 JV4428'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 420
 JV4428'AND ROUTE 108 IN THE TOWN OF LAYTONSVILLE, GO NORTH ON
 JV4428'ROUTE 108 FOR .9 MILES TO A SIDE ROAD RIGHT (GRIFFITH
 JV4428'ROAD).  TURN RIGHT AND GO EAST ON GRIFFITH ROAD FOR .8 MILES
 JV4428'TO THE STATION ON THE RIGHT.
 JV4428'
 JV4428'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4428'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 28.10 FEET
 JV4428'EAST OF POLE 22, 44.98 FEET SOUTHEAST OF PEPCO POLE NO. 623405,
 JV4428'AND 62.84 FEET WEST OF A 30-INCH ASH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4232 ***********************************************************************
 JV4232  DESIGNATION -  17152 WSSC 1969
 JV4232  PID         -  JV4232
 JV4232  STATE/COUNTY-  MD/MONTGOMERY
 JV4232  COUNTRY     -  US
 JV4232  USGS QUAD   -  DAMASCUS (2016)
 JV4232
 JV4232                         *CURRENT SURVEY CONTROL
 JV4232  ______________________________________________________________________
 JV4232* NAD 83(1993) POSITION- 39 17 00.53208(N) 077 10 41.93829(W)   ADJUSTED
 JV4232* NAVD 88 ORTHO HEIGHT -   228.2   (meters)      749.    (feet) VERTCON3
 JV4232  ______________________________________________________________________
 JV4232  GEOID HEIGHT    -        -31.830 (meters)                     GEOID18
 JV4232  LAPLACE CORR    -          1.21  (seconds)                    DEFLEC18
 JV4232  HORZ ORDER      -  SECOND
 JV4232
 JV4232.The horizontal coordinates were established by classical geodetic methods
 JV4232.and adjusted by the National Geodetic Survey in November 1994.
 JV4232
 JV4232.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4232.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4232
 JV4232.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4232.GEOID18 height accuracy estimate available here.
 JV4232
 JV4232.Click photographs - Photos may exist for this station.
 JV4232
 JV4232.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4232
 JV4232. The following values were computed from the NAD 83(1993) position.
 JV4232
 JV4232;                    North         East     Units Scale Factor Converg.
 JV4232;SPC MD       -   179,491.587   384,615.330   MT  0.99997511   -0 06 42.9
 JV4232;SPC MD       -   588,881.98  1,261,858.80   sFT  0.99997511   -0 06 42.9
 JV4232;UTM  18      - 4,350,497.453   312,121.692   MT  1.00003463   -1 22 46.6
 JV4232
 JV4232!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4232!SPC MD       -   0.99996919  x   0.99997511  =   0.99994430
 JV4232!UTM  18      -   0.99996919  x   1.00003463  =   1.00000382
 JV4232
 JV4232_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1212150497(NAD 83)
 JV4232
 JV4232                          SUPERSEDED SURVEY CONTROL
 JV4232
 JV4232  NAD 83(1991)-  39 17 00.53173(N)    077 10 41.93944(W) AD(       ) 2
 JV4232  NAD 83(1986)-  39 17 00.53195(N)    077 10 41.94966(W) AD(       ) 2
 JV4232  NAD 27      -  39 17 00.15351(N)    077 10 43.01260(W) AD(       ) 2
 JV4232  NGVD 29 (07/19/86)  228.4    (m)          749.     (f) VERT ANG       
 JV4232
 JV4232.Superseded values are not recommended for survey control.
 JV4232
 JV4232.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4232.See file dsdata.pdf to determine how the superseded data were derived.
 JV4232
 JV4232_MARKER: I = METAL ROD
 JV4232_SETTING: 0 = UNSPECIFIED SETTING
 JV4232_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4232
 JV4232  HISTORY     - Date     Condition        Report By
 JV4232  HISTORY     - 1969     MONUMENTED       WSSC
 JV4232
 JV4232                          STATION DESCRIPTION
 JV4232
 JV4232'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4232'THE STATION IS ABOUT 1-1/2 MILES EAST OF DAMASCUS AND 2-1/2
 JV4232'MILES NORTHWEST OF ETCHISON.
 JV4232'
 JV4232'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 108 AND
 JV4232'MULLINIX MILL ROAD, GO NORTHWEST ON ROUTE 108 FOR .2 MILES TO
 JV4232'A ONE STORY HOUSE AND THE STATION IS ON THE LEFT.
 JV4232'
 JV4232'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4232'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 80.14 FEET SOUTHEAST
 JV4232'OF P AND E POLE NO. 4286, 69.49 FEET NORTHEAST OF THE NORTHWEST
 JV4232'CORNER, AND 75.20 FEET NORTH OF THE NORTHEAST CORNER OF HOUSE
 JV4232'8640.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4234 ***********************************************************************
 JV4234  DESIGNATION -  17153 WSSC 1969
 JV4234  PID         -  JV4234
 JV4234  STATE/COUNTY-  MD/MONTGOMERY
 JV4234  COUNTRY     -  US
 JV4234  USGS QUAD   -  DAMASCUS (2016)
 JV4234
 JV4234                         *CURRENT SURVEY CONTROL
 JV4234  ______________________________________________________________________
 JV4234* NAD 83(1993) POSITION- 39 17 04.11006(N) 077 10 54.50089(W)   ADJUSTED
 JV4234* NAVD 88 ORTHO HEIGHT -   234.2   (meters)      768.    (feet) VERTCON3
 JV4234  ______________________________________________________________________
 JV4234  GEOID HEIGHT    -        -31.833 (meters)                     GEOID18
 JV4234  LAPLACE CORR    -          1.38  (seconds)                    DEFLEC18
 JV4234  HORZ ORDER      -  SECOND
 JV4234
 JV4234.The horizontal coordinates were established by classical geodetic methods
 JV4234.and adjusted by the National Geodetic Survey in November 1994.
 JV4234
 JV4234.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4234.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4234
 JV4234.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4234.GEOID18 height accuracy estimate available here.
 JV4234
 JV4234.Click photographs - Photos may exist for this station.
 JV4234
 JV4234.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4234
 JV4234. The following values were computed from the NAD 83(1993) position.
 JV4234
 JV4234;                    North         East     Units Scale Factor Converg.
 JV4234;SPC MD       -   179,602.520   384,314.475   MT  0.99997523   -0 06 50.8
 JV4234;SPC MD       -   589,245.93  1,260,871.74   sFT  0.99997523   -0 06 50.8
 JV4234;UTM  18      - 4,350,615.022   311,823.348   MT  1.00003601   -1 22 54.7
 JV4234
 JV4234!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4234!SPC MD       -   0.99996825  x   0.99997523  =   0.99994348
 JV4234!UTM  18      -   0.99996825  x   1.00003601  =   1.00000426
 JV4234
 JV4234_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1182350615(NAD 83)
 JV4234
 JV4234                          SUPERSEDED SURVEY CONTROL
 JV4234
 JV4234  NAD 83(1991)-  39 17 04.10969(N)    077 10 54.50207(W) AD(       ) 2
 JV4234  NAD 83(1986)-  39 17 04.10990(N)    077 10 54.51228(W) AD(       ) 2
 JV4234  NAD 27      -  39 17 03.73153(N)    077 10 55.57483(W) AD(       ) 2
 JV4234  NGVD 29 (07/19/86)  234.4    (m)          769.     (f) VERT ANG       
 JV4234
 JV4234.Superseded values are not recommended for survey control.
 JV4234
 JV4234.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4234.See file dsdata.pdf to determine how the superseded data were derived.
 JV4234
 JV4234_MARKER: I = METAL ROD
 JV4234_SETTING: 0 = UNSPECIFIED SETTING
 JV4234_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4234
 JV4234  HISTORY     - Date     Condition        Report By
 JV4234  HISTORY     - 1969     MONUMENTED       WSSC
 JV4234
 JV4234                          STATION DESCRIPTION
 JV4234
 JV4234'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4234'THE STATION IS ABOUT 1-1/2 MILES EAST OF DAMASCUS AND 2-1/2
 JV4234'MILES NORTHWEST OF ETCHISON.
 JV4234'
 JV4234'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 108 AND
 JV4234'MULLINIX MILL ROAD, GO NORTHWEST ON ROUTE 108 FOR .55 MILES TO
 JV4234'THE INTERSECTION OF CORNER DRIVE AND THE STATION IS ON THE
 JV4234'RIGHT.
 JV4234'
 JV4234'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4234'AND IS FLUSH WITH THE SURFACE.  IT IS ON THE NORTHEAST CORNER
 JV4234'OF CORNER DRIVE AND ROUTE 108 AND IS 19.86 FEET NORTH OF THE
 JV4234'NORTHWEST CORNER OF A CONCRETE HEADWALL, 47.87 FEET NORTHEAST
 JV4234'OF THE NORTHEAST CORNER OF A CONCRETE HEADWALL, 80.32 FEET
 JV4234'NORTHEAST OF P AND E POLE NO. F-44413, AND 9.1 FEET EAST OF THE
 JV4234'EDGE OF CORNER DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4496 ***********************************************************************
 HV4496  DESIGNATION -  17154 WSSC 1969
 HV4496  PID         -  HV4496
 HV4496  STATE/COUNTY-  MD/MONTGOMERY
 HV4496  COUNTRY     -  US
 HV4496  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4496
 HV4496                         *CURRENT SURVEY CONTROL
 HV4496  ______________________________________________________________________
 HV4496* NAD 83(1993) POSITION- 38 57 07.89432(N) 077 07 15.41385(W)   ADJUSTED
 HV4496* NAVD 88 ORTHO HEIGHT -    84.2   (meters)      276.    (feet) VERTCON3
 HV4496  ______________________________________________________________________
 HV4496  GEOID HEIGHT    -        -31.885 (meters)                     GEOID18
 HV4496  LAPLACE CORR    -         -2.09  (seconds)                    DEFLEC18
 HV4496  HORZ ORDER      -  SECOND
 HV4496
 HV4496.The horizontal coordinates were established by classical geodetic methods
 HV4496.and adjusted by the National Geodetic Survey in November 1994.
 HV4496
 HV4496.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4496.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4496
 HV4496.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4496.GEOID18 height accuracy estimate available here.
 HV4496
 HV4496.Click photographs - Photos may exist for this station.
 HV4496
 HV4496.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4496
 HV4496. The following values were computed from the NAD 83(1993) position.
 HV4496
 HV4496;                    North         East     Units Scale Factor Converg.
 HV4496;SPC MD       -   142,706.101   389,516.157   MT  0.99995073   -0 04 33.3
 HV4496;SPC MD       -   468,194.93  1,277,937.59   sFT  0.99995073   -0 04 33.3
 HV4496;UTM  18      - 4,313,610.498   316,210.952   MT  1.00001595   -1 20 01.5
 HV4496
 HV4496!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4496!SPC MD       -   0.99999180  x   0.99995073  =   0.99994253
 HV4496!UTM  18      -   0.99999180  x   1.00001595  =   1.00000775
 HV4496
 HV4496:                Primary Azimuth Mark                     Grid Az
 HV4496:SPC MD       -  MAP AMS 1952                             186 56 36.1
 HV4496:UTM  18      -  MAP AMS 1952                             188 12 04.3
 HV4496
 HV4496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1621013610(NAD 83)
 HV4496
 HV4496|---------------------------------------------------------------------|
 HV4496| PID    Reference Object                     Distance      Geod. Az  |
 HV4496|                                                           dddmmss.s |
 HV4496| HV4477 MAP AMS 1952                        466.106 METERS 1865202.8 |
 HV4496|---------------------------------------------------------------------|
 HV4496
 HV4496                          SUPERSEDED SURVEY CONTROL
 HV4496
 HV4496  NAD 83(1991)-  38 57 07.89345(N)    077 07 15.41553(W) AD(       ) 2
 HV4496  NAD 83(1986)-  38 57 07.89326(N)    077 07 15.42529(W) AD(       ) 2
 HV4496  NAD 27      -  38 57 07.49551(N)    077 07 16.49659(W) AD(       ) 2
 HV4496  NGVD 29 (07/19/86)   84.4    (m)          277.     (f) VERT ANG       
 HV4496
 HV4496.Superseded values are not recommended for survey control.
 HV4496
 HV4496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4496.See file dsdata.pdf to determine how the superseded data were derived.
 HV4496
 HV4496_MARKER: I = METAL ROD
 HV4496_SETTING: 0 = UNSPECIFIED SETTING
 HV4496_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4496
 HV4496  HISTORY     - Date     Condition        Report By
 HV4496  HISTORY     - 1969     MONUMENTED       WSSC
 HV4496  HISTORY     - 19950709 MARK NOT FOUND   USPSQD
 HV4496
 HV4496                          STATION DESCRIPTION
 HV4496
 HV4496'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4496'THE STATION IS ABOUT 2-1/2 MILES SOUTHWEST OF CHEVY CHASE AND
 HV4496'2 MILES SOUTH OF GLEN ECHO.
 HV4496'
 HV4496'TO REACH THE STATION FROM THE ENTRANCE TO THE ARMY MAP SERVICE
 HV4496'AND SANGAMORE ROAD, GO NORTH ON SANGAMORE ROAD FOR .25 MILE TO
 HV4496'OVERLEA ROAD AND THE STATION IS ON THE LEFT.
 HV4496'
 HV4496'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV4496'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 14.42 FEET
 HV4496'SOUTH OF THE CENTER OF A FIRE HYDRANT, 66.20 FEET NORTH OF A
 HV4496'POWER LINE POLE AND 47.33 FEET SOUTHWEST OF THE CENTER OF A
 HV4496'MANHOLE.
 HV4496
 HV4496                          STATION RECOVERY (1995)
 HV4496
 HV4496'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4496'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4497 ***********************************************************************
 HV4497  DESIGNATION -  17155 WSSC 1969
 HV4497  PID         -  HV4497
 HV4497  STATE/COUNTY-  MD/MONTGOMERY
 HV4497  COUNTRY     -  US
 HV4497  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4497
 HV4497                         *CURRENT SURVEY CONTROL
 HV4497  ______________________________________________________________________
 HV4497* NAD 83(1993) POSITION- 38 57 28.60548(N) 077 07 20.03738(W)   ADJUSTED
 HV4497* NAVD 88 ORTHO HEIGHT -    97.1   (meters)      319.    (feet) VERTCON3
 HV4497  ______________________________________________________________________
 HV4497  GEOID HEIGHT    -        -31.875 (meters)                     GEOID18
 HV4497  LAPLACE CORR    -         -2.11  (seconds)                    DEFLEC18
 HV4497  HORZ ORDER      -  SECOND
 HV4497
 HV4497.The horizontal coordinates were established by classical geodetic methods
 HV4497.and adjusted by the National Geodetic Survey in November 1994.
 HV4497
 HV4497.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4497.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4497
 HV4497.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4497.GEOID18 height accuracy estimate available here.
 HV4497
 HV4497.Click photographs - Photos may exist for this station.
 HV4497
 HV4497.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4497
 HV4497. The following values were computed from the NAD 83(1993) position.
 HV4497
 HV4497;                    North         East     Units Scale Factor Converg.
 HV4497;SPC MD       -   143,344.895   389,405.687   MT  0.99995087   -0 04 36.2
 HV4497;SPC MD       -   470,290.71  1,277,575.16   sFT  0.99995087   -0 04 36.2
 HV4497;UTM  18      - 4,314,251.605   316,114.526   MT  1.00001638   -1 20 05.0
 HV4497
 HV4497!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4497!SPC MD       -   0.99998977  x   0.99995087  =   0.99994064
 HV4497!UTM  18      -   0.99998977  x   1.00001638  =   1.00000615
 HV4497
 HV4497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1611414251(NAD 83)
 HV4497
 HV4497                          SUPERSEDED SURVEY CONTROL
 HV4497
 HV4497  NAD 83(1991)-  38 57 28.60461(N)    077 07 20.03906(W) AD(       ) 2
 HV4497  NAD 83(1986)-  38 57 28.60443(N)    077 07 20.04879(W) AD(       ) 2
 HV4497  NAD 27      -  38 57 28.20699(N)    077 07 21.11992(W) AD(       ) 2
 HV4497  NGVD 29 (07/19/86)   97.3    (m)          319.     (f) VERT ANG       
 HV4497
 HV4497.Superseded values are not recommended for survey control.
 HV4497
 HV4497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4497.See file dsdata.pdf to determine how the superseded data were derived.
 HV4497
 HV4497_MARKER: I = METAL ROD
 HV4497_SETTING: 0 = UNSPECIFIED SETTING
 HV4497_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4497
 HV4497  HISTORY     - Date     Condition        Report By
 HV4497  HISTORY     - 1969     MONUMENTED       WSSC
 HV4497  HISTORY     - 19950709 GOOD             USPSQD
 HV4497
 HV4497                          STATION DESCRIPTION
 HV4497
 HV4497'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4497'THE STATION IS ABOUT 2-1/2 MILES SOUTHWEST OF CHEVY CHASE AND
 HV4497'2 MILES SOUTH OF GLEN ECHO.
 HV4497'
 HV4497'THE STATION IS LOCATED ON THE WEST SIDE OF SANGAMORE ROAD 75
 HV4497'FEET SOUTH OF MADAWASKA ROAD.
 HV4497'
 HV4497'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4497'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 93.75 FEET SOUTH OF THE
 HV4497'CENTER OF A FIRE HYDRANT, 68.93 FEET SOUTH OF THE CENTER OF A
 HV4497'WATER VALVE AND 6.62 FEET WEST OF THE WEST EDGE OF THE CURB.
 HV4497
 HV4497                          STATION RECOVERY (1995)
 HV4497
 HV4497'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4497'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4441 ***********************************************************************
 JV4441  DESIGNATION -  17156 WSSC 1969
 JV4441  PID         -  JV4441
 JV4441  STATE/COUNTY-  MD/MONTGOMERY
 JV4441  COUNTRY     -  US
 JV4441  USGS QUAD   -  GAITHERSBURG (2016)
 JV4441
 JV4441                         *CURRENT SURVEY CONTROL
 JV4441  ______________________________________________________________________
 JV4441* NAD 83(1993) POSITION- 39 14 55.05597(N) 077 11 34.09424(W)   ADJUSTED
 JV4441* NAVD 88 ORTHO HEIGHT -   189.2   (meters)      621.    (feet) VERTCON3
 JV4441  ______________________________________________________________________
 JV4441  GEOID HEIGHT    -        -31.813 (meters)                     GEOID18
 JV4441  LAPLACE CORR    -          1.33  (seconds)                    DEFLEC18
 JV4441  HORZ ORDER      -  SECOND
 JV4441
 JV4441.The horizontal coordinates were established by classical geodetic methods
 JV4441.and adjusted by the National Geodetic Survey in November 1994.
 JV4441
 JV4441.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4441.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4441
 JV4441.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4441.GEOID18 height accuracy estimate available here.
 JV4441
 JV4441.Click photographs - Photos may exist for this station.
 JV4441
 JV4441.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4441
 JV4441. The following values were computed from the NAD 83(1993) position.
 JV4441
 JV4441;                    North         East     Units Scale Factor Converg.
 JV4441;SPC MD       -   175,624.678   383,357.191   MT  0.99997097   -0 07 15.6
 JV4441;SPC MD       -   576,195.30  1,257,731.05   sFT  0.99997097   -0 07 15.6
 JV4441;UTM  18      - 4,346,659.065   310,778.256   MT  1.00004087   -1 23 16.0
 JV4441
 JV4441!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4441!SPC MD       -   0.99997531  x   0.99997097  =   0.99994628
 JV4441!UTM  18      -   0.99997531  x   1.00004087  =   1.00001618
 JV4441
 JV4441:                Primary Azimuth Mark                     Grid Az
 JV4441:SPC MD       -  MCDANIEL                                 000 57 24.3
 JV4441:UTM  18      -  MCDANIEL                                 002 13 24.7
 JV4441
 JV4441_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1077846659(NAD 83)
 JV4441
 JV4441|---------------------------------------------------------------------|
 JV4441| PID    Reference Object                     Distance      Geod. Az  |
 JV4441|                                                           dddmmss.s |
 JV4441| JV4228 MCDANIEL                            APPROX. 3.3 KM 0005008.7 |
 JV4441| JV4235 17157 WSSC 1969                     343.338 METERS 32304     |
 JV4441|---------------------------------------------------------------------|
 JV4441
 JV4441                          SUPERSEDED SURVEY CONTROL
 JV4441
 JV4441  NAD 83(1991)-  39 14 55.05565(N)    077 11 34.09447(W) AD(       ) 2
 JV4441  NAD 83(1986)-  39 14 55.05580(N)    077 11 34.10482(W) AD(       ) 2
 JV4441  NAD 27      -  39 14 54.67549(N)    077 11 35.16636(W) AD(       ) 2
 JV4441  NGVD 29 (07/19/86)  189.4    (m)          621.     (f) VERT ANG       
 JV4441
 JV4441.Superseded values are not recommended for survey control.
 JV4441
 JV4441.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4441.See file dsdata.pdf to determine how the superseded data were derived.
 JV4441
 JV4441_MARKER: I = METAL ROD
 JV4441_SETTING: 0 = UNSPECIFIED SETTING
 JV4441_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4441
 JV4441  HISTORY     - Date     Condition        Report By
 JV4441  HISTORY     - 1969     MONUMENTED       WSSC
 JV4441
 JV4441                          STATION DESCRIPTION
 JV4441
 JV4441'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4441'THE STATION IS ABOUT 2-1/2 MILES SOUTHEAST OF DAMASCUS AND
 JV4441'2-1/2 MILES WEST OF ETCHISON.
 JV4441'
 JV4441'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 124 AND
 JV4441'ROUTE 108 IN DAMASCUS, GO SOUTH ON ROUTE 124 FOR 3.15 MILES TO
 JV4441'A ONE STORY HOUSE AND THE STATION IS ON THE RIGHT.
 JV4441'
 JV4441'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4441'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS ABOUT 150 FEET
 JV4441'WEST OF WOODFIELD SCHOOL ROAD AND 19.71 FEET EAST OF A POWER
 JV4441'POLE, 35.20 FEET NORTH OF C AND P POLE NO. 118, 62.65 FEET
 JV4441'SOUTHWEST OF THE SOUTHEAST CORNER AND 64.12 FEET SOUTHEAST OF
 JV4441'THE SOUTHWEST CORNER OF A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4235 ***********************************************************************
 JV4235  DESIGNATION -  17157 WSSC 1969
 JV4235  PID         -  JV4235
 JV4235  STATE/COUNTY-  MD/MONTGOMERY
 JV4235  COUNTRY     -  US
 JV4235  USGS QUAD   -  DAMASCUS (2016)
 JV4235
 JV4235                         *CURRENT SURVEY CONTROL
 JV4235  ______________________________________________________________________
 JV4235* NAD 83(1993) POSITION- 39 15 03.95524(N) 077 11 42.69810(W)   ADJUSTED
 JV4235* NAVD 88 ORTHO HEIGHT -   187.6   (meters)      615.    (feet) VERTCON3
 JV4235  ______________________________________________________________________
 JV4235  GEOID HEIGHT    -        -31.817 (meters)                     GEOID18
 JV4235  LAPLACE CORR    -          1.43  (seconds)                    DEFLEC18
 JV4235  HORZ ORDER      -  SECOND
 JV4235
 JV4235.The horizontal coordinates were established by classical geodetic methods
 JV4235.and adjusted by the National Geodetic Survey in November 1994.
 JV4235
 JV4235.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4235.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4235
 JV4235.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4235.GEOID18 height accuracy estimate available here.
 JV4235
 JV4235.Click photographs - Photos may exist for this station.
 JV4235
 JV4235.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4235
 JV4235. The following values were computed from the NAD 83(1993) position.
 JV4235
 JV4235;                    North         East     Units Scale Factor Converg.
 JV4235;SPC MD       -   175,899.552   383,151.477   MT  0.99997125   -0 07 21.0
 JV4235;SPC MD       -   577,097.11  1,257,056.14   sFT  0.99997125   -0 07 21.0
 JV4235;UTM  18      - 4,346,938.439   310,578.655   MT  1.00004180   -1 23 21.7
 JV4235
 JV4235!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4235!SPC MD       -   0.99997556  x   0.99997125  =   0.99994681
 JV4235!UTM  18      -   0.99997556  x   1.00004180  =   1.00001736
 JV4235
 JV4235_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1057846938(NAD 83)
 JV4235
 JV4235                          SUPERSEDED SURVEY CONTROL
 JV4235
 JV4235  NAD 83(1991)-  39 15 03.95489(N)    077 11 42.69836(W) AD(       ) 2
 JV4235  NAD 83(1986)-  39 15 03.95505(N)    077 11 42.70871(W) AD(       ) 2
 JV4235  NAD 27      -  39 15 03.57487(N)    077 11 43.76996(W) AD(       ) 2
 JV4235  NGVD 29 (07/19/86)  187.8    (m)          616.     (f) VERT ANG       
 JV4235
 JV4235.Superseded values are not recommended for survey control.
 JV4235
 JV4235.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4235.See file dsdata.pdf to determine how the superseded data were derived.
 JV4235
 JV4235_MARKER: I = METAL ROD
 JV4235_SETTING: 0 = UNSPECIFIED SETTING
 JV4235_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4235
 JV4235  HISTORY     - Date     Condition        Report By
 JV4235  HISTORY     - 1969     MONUMENTED       WSSC
 JV4235
 JV4235                          STATION DESCRIPTION
 JV4235
 JV4235'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4235'THE STATION IS ABOUT 2-1/2 MILES SOUTHEAST OF DAMASCUS AND
 JV4235'2-1/2 MILES WEST OF ETCHISON.
 JV4235'
 JV4235'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 124 AND
 JV4235'ROUTE 108 IN DAMASCUS, GO SOUTH ON ROUTE 124 FOR 2.8 MILES
 JV4235'TO THE STATION ON THE LEFT.
 JV4235'
 JV4235'THE STATION MARK IS CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4235'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 54.66 FEET SOUTHEAST
 JV4235'OF THE SOUTHWEST CORNER OF HOUSE 311, 53.48 FEET SOUTHWEST OF
 JV4235'THE SOUTHEAST CORNER OF HOUSE 311, 30.00 FEET EAST OF THE
 JV4235'CENTER OF A FIRE HYDRANT AND 43.80 FEET WEST OF A POWER POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4233 ***********************************************************************
 JV4233  DESIGNATION -  17158 WSSC 1969
 JV4233  PID         -  JV4233
 JV4233  STATE/COUNTY-  MD/MONTGOMERY
 JV4233  COUNTRY     -  US
 JV4233  USGS QUAD   -  DAMASCUS (2016)
 JV4233
 JV4233                         *CURRENT SURVEY CONTROL
 JV4233  ______________________________________________________________________
 JV4233* NAD 83(1993) POSITION- 39 16 01.60781(N) 077 10 44.02138(W)   ADJUSTED
 JV4233* NAVD 88 ORTHO HEIGHT -   197.8   (meters)      649.    (feet) VERTCON3
 JV4233  ______________________________________________________________________
 JV4233  GEOID HEIGHT    -        -31.817 (meters)                     GEOID18
 JV4233  LAPLACE CORR    -          1.25  (seconds)                    DEFLEC18
 JV4233  HORZ ORDER      -  SECOND
 JV4233
 JV4233.The horizontal coordinates were established by classical geodetic methods
 JV4233.and adjusted by the National Geodetic Survey in November 1994.
 JV4233
 JV4233.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4233.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4233
 JV4233.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4233.GEOID18 height accuracy estimate available here.
 JV4233
 JV4233.Click photographs - Photos may exist for this station.
 JV4233
 JV4233.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4233
 JV4233. The following values were computed from the NAD 83(1993) position.
 JV4233
 JV4233;                    North         East     Units Scale Factor Converg.
 JV4233;SPC MD       -   177,674.564   384,561.846   MT  0.99997312   -0 06 44.2
 JV4233;SPC MD       -   582,920.63  1,261,683.32   sFT  0.99997312   -0 06 44.2
 JV4233;UTM  18      - 4,348,681.947   312,028.024   MT  1.00003507   -1 22 46.2
 JV4233
 JV4233!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4233!SPC MD       -   0.99997396  x   0.99997312  =   0.99994708
 JV4233!UTM  18      -   0.99997396  x   1.00003507  =   1.00000903
 JV4233
 JV4233_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1202848681(NAD 83)
 JV4233
 JV4233                          SUPERSEDED SURVEY CONTROL
 JV4233
 JV4233  NAD 83(1991)-  39 16 01.60759(N)    077 10 44.02185(W) AD(       ) 2
 JV4233  NAD 83(1986)-  39 16 01.60774(N)    077 10 44.03217(W) AD(       ) 2
 JV4233  NAD 27      -  39 16 01.22836(N)    077 10 45.09517(W) AD(       ) 2
 JV4233  NGVD 29 (07/19/86)  198.0    (m)          650.     (f) VERT ANG       
 JV4233
 JV4233.Superseded values are not recommended for survey control.
 JV4233
 JV4233.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4233.See file dsdata.pdf to determine how the superseded data were derived.
 JV4233
 JV4233_MARKER: I = METAL ROD
 JV4233_SETTING: 0 = UNSPECIFIED SETTING
 JV4233_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4233
 JV4233  HISTORY     - Date     Condition        Report By
 JV4233  HISTORY     - 1969     MONUMENTED       WSSC
 JV4233
 JV4233                          STATION DESCRIPTION
 JV4233
 JV4233'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4233'THE STATION IS ABOUT 2 MILES SOUTHEAST OF DAMASCUS AND 2
 JV4233'MILES NORTHWEST OF ETCHISON.
 JV4233'
 JV4233'THE STATION IS LOCATED ON THE SOUTHEAST CORNER OF THE
 JV4233'INTERSECTION OF HAWKINS CREAMERY ROAD AND WOODFIELD SCHOOL
 JV4233'ROAD. IT IS ON THE TOP OF A HILL AND IN FRONT OF A BRICK HOUSE.
 JV4233'
 JV4233'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4233'CENTER AND IS 3 INCHES BELOW THE SURFACE.  IT IS 15.17 FEET
 JV4233'SOUTHWEST OF POLE NO. 38, 24.5 FEET SOUTH OF THE SOUTH EDGE OF
 JV4233'HAWKINS CREAMERY ROAD, AND 97.45 FEET NORTHWEST OF THE SOUTHWEST
 JV4233'CORNER OF A BRICK HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4492 ***********************************************************************
 HV4492  DESIGNATION -  17159 WSSC 1969
 HV4492  PID         -  HV4492
 HV4492  STATE/COUNTY-  MD/MONTGOMERY
 HV4492  COUNTRY     -  US
 HV4492  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4492
 HV4492                         *CURRENT SURVEY CONTROL
 HV4492  ______________________________________________________________________
 HV4492* NAD 83(1993) POSITION- 38 59 23.95820(N) 077 04 37.26224(W)   ADJUSTED
 HV4492* NAVD 88 ORTHO HEIGHT -    90.0   (meters)      295.    (feet) VERTCON3
 HV4492  ______________________________________________________________________
 HV4492  GEOID HEIGHT    -        -31.902 (meters)                     GEOID18
 HV4492  LAPLACE CORR    -         -3.17  (seconds)                    DEFLEC18
 HV4492  HORZ ORDER      -  SECOND
 HV4492
 HV4492.The horizontal coordinates were established by classical geodetic methods
 HV4492.and adjusted by the National Geodetic Survey in November 1994.
 HV4492
 HV4492.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4492.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4492
 HV4492.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4492.GEOID18 height accuracy estimate available here.
 HV4492
 HV4492.Click photographs - Photos may exist for this station.
 HV4492
 HV4492.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4492
 HV4492. The following values were computed from the NAD 83(1993) position.
 HV4492
 HV4492;                    North         East     Units Scale Factor Converg.
 HV4492;SPC MD       -   146,897.633   393,327.651   MT  0.99995183   -0 02 54.0
 HV4492;SPC MD       -   481,946.65  1,290,442.47   sFT  0.99995183   -0 02 54.0
 HV4492;UTM  18      - 4,317,717.547   320,113.793   MT  0.99999847   -1 18 25.8
 HV4492
 HV4492!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4492!SPC MD       -   0.99999089  x   0.99995183  =   0.99994272
 HV4492!UTM  18      -   0.99999089  x   0.99999847  =   0.99998936
 HV4492
 HV4492:                Primary Azimuth Mark                     Grid Az
 HV4492:SPC MD       -  MEDICAL CENTER                           311 06 42.0
 HV4492:UTM  18      -  MEDICAL CENTER                           312 22 13.8
 HV4492
 HV4492_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2011317717(NAD 83)
 HV4492
 HV4492|---------------------------------------------------------------------|
 HV4492| PID    Reference Object                     Distance      Geod. Az  |
 HV4492|                                                           dddmmss.s |
 HV4492| HV4491 17160 WSSC 1969                     218.191 METERS 17943     |
 HV4492| JV4314 MEDICAL CENTER                      APPROX. 2.0 KM 3110348.0 |
 HV4492| JV4269 BETHESDA NAVAL MED CTR BCN          APPROX. 2.0 KM 3111805.0 |
 HV4492|---------------------------------------------------------------------|
 HV4492
 HV4492                          SUPERSEDED SURVEY CONTROL
 HV4492
 HV4492  NAD 83(1991)-  38 59 23.95766(N)    077 04 37.26315(W) AD(       ) 2
 HV4492  NAD 83(1986)-  38 59 23.95735(N)    077 04 37.27309(W) AD(       ) 2
 HV4492  NAD 27      -  38 59 23.56212(N)    077 04 38.34861(W) AD(       ) 2
 HV4492  NGVD 29 (07/19/86)   90.2    (m)          296.     (f) VERT ANG       
 HV4492
 HV4492.Superseded values are not recommended for survey control.
 HV4492
 HV4492.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4492.See file dsdata.pdf to determine how the superseded data were derived.
 HV4492
 HV4492_MARKER: I = METAL ROD
 HV4492_SETTING: 0 = UNSPECIFIED SETTING
 HV4492_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4492
 HV4492  HISTORY     - Date     Condition        Report By
 HV4492  HISTORY     - 1969     MONUMENTED       WSSC
 HV4492  HISTORY     - 19950804 MARK NOT FOUND   USPSQD
 HV4492  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV4492
 HV4492                          STATION DESCRIPTION
 HV4492
 HV4492'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4492'THE STATION IS ABOUT 2 MILES EAST OF BETHESDA AND 1-1/2 MILE
 HV4492'NORTH OF CHEVY CHASE.
 HV4492'
 HV4492'TO REACH THE STATION FROM THE INTERSECTION OF CONNECTICUT
 HV4492'AVENUE (ROUTE 193) AND EAST WEST HIGHWAY (ROUTE 410) GO NORTH
 HV4492'ON CONNECTICUT AVENUE FOR .15 MILE TO THE STATION ON THE RIGHT.
 HV4492'
 HV4492'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4492'AND IS 1 INCH BELOW THE SURFACE.  IT IS 29.92 FEET NORTH OF PEPCO
 HV4492'POLE 6213, 38.58 FEET WEST OF THE SOUTHWEST CORNER AND 47.18 FEET
 HV4492'SOUTHWEST OF THE NORTHWEST CORNER OF THE PORCH TO THE WOMENS
 HV4492'CLUB OF CHEVY CHASE.
 HV4492
 HV4492                          STATION RECOVERY (1995)
 HV4492
 HV4492'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4492'MARK NOT FOUND.
 HV4492
 HV4492                          STATION RECOVERY (2000)
 HV4492
 HV4492'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV4492'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2744 ***********************************************************************
 JV2744  DESIGNATION -  1716 WSSC
 JV2744  PID         -  JV2744
 JV2744  STATE/COUNTY-  MD/MONTGOMERY
 JV2744  COUNTRY     -  US
 JV2744  USGS QUAD   -  KENSINGTON (2016)
 JV2744
 JV2744                         *CURRENT SURVEY CONTROL
 JV2744  ______________________________________________________________________
 JV2744* NAD 83(1986) POSITION- 39 02 07.     (N) 077 01 24.     (W)   SCALED
 JV2744* NAVD 88 ORTHO HEIGHT -   116.183 (meters)      381.18  (feet) ADJUSTED
 JV2744  ______________________________________________________________________
 JV2744  GEOID HEIGHT    -        -31.952 (meters)                     GEOID18
 JV2744  DYNAMIC HEIGHT  -        116.120 (meters)      380.97  (feet) COMP
 JV2744  MODELED GRAVITY -    980,085.1   (mgal)                       NAVD 88
 JV2744
 JV2744  VERT ORDER      -  SECOND    CLASS 0
 JV2744
 JV2744.The horizontal coordinates were scaled from a map and have
 JV2744.an estimated accuracy of +/- 6 seconds.
 JV2744
 JV2744.The orthometric height was determined by differential leveling and
 JV2744.adjusted by the NATIONAL GEODETIC SURVEY
 JV2744.in June 1991.
 JV2744
 JV2744.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2744.GEOID18 height accuracy estimate available here.
 JV2744
 JV2744.Click photographs - Photos may exist for this station.
 JV2744
 JV2744.The dynamic height is computed by dividing the NAVD 88
 JV2744.geopotential number by the normal gravity value computed on the
 JV2744.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2744.degrees latitude (g = 980.6199 gals.).
 JV2744
 JV2744.The modeled gravity was interpolated from observed gravity values.
 JV2744
 JV2744;                    North         East    Units  Estimated Accuracy
 JV2744;SPC MD       -   151,920.      397,980.      MT  (+/- 180 meters Scaled)
 JV2744
 JV2744_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ248226(NAD 83)
 JV2744
 JV2744                          SUPERSEDED SURVEY CONTROL
 JV2744
 JV2744  NGVD 29 (11/26/84)  116.405  (m)          381.91   (f) ADJUSTED    2 0
 JV2744
 JV2744.Superseded values are not recommended for survey control.
 JV2744
 JV2744.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2744.See file dsdata.pdf to determine how the superseded data were derived.
 JV2744
 JV2744_MARKER: DD = SURVEY DISK
 JV2744_SETTING: 0 = UNSPECIFIED SETTING
 JV2744_SP_SET: IRON PIPE
 JV2744_STAMPING: 1716
 JV2744_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2744
 JV2744  HISTORY     - Date     Condition        Report By
 JV2744  HISTORY     - UNK      MONUMENTED       WSSC
 JV2744  HISTORY     - 1952     GOOD             CGS
 JV2744
 JV2744                          STATION DESCRIPTION
 JV2744
 JV2744'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV2744'1.4 MI NW FROM FOUR CORNERS.
 JV2744'ABOUT 1.4 MILES NORTHWEST ALONG OLD BLADENSBURG ROAD (STATE
 JV2744'HIGHWAY 193) FROM THE INTERSECTION OF COLESVILLE ROAD (U.S.
 JV2744'HIGHWAY 29) AT FOUR CORNERS, MONTGOMERY COUNTY, AT THE JUNCTION
 JV2744'OF KEMPS MILL ROAD, AT A GATE TO A DRIVEWAY, 15.2 FEET SOUTHEAST
 JV2744'OF THE NORTHWEST GATEPOST, 12.2 FEET NORTHEAST OF A PROPERTY
 JV2744'STONE, 5.6 FEET FROM THE SOUTHEAST END OF A WALL, AND 1.75 FEET
 JV2744'OUT FROM THE WALL.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV2744'BRONZE DISK, STAMPED 1716, AND FASTENED TO THE TOP OF AN IRON
 JV2744'PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4491 ***********************************************************************
 HV4491  DESIGNATION -  17160 WSSC 1969
 HV4491  PID         -  HV4491
 HV4491  STATE/COUNTY-  MD/MONTGOMERY
 HV4491  COUNTRY     -  US
 HV4491  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4491
 HV4491                         *CURRENT SURVEY CONTROL
 HV4491  ______________________________________________________________________
 HV4491* NAD 83(1993) POSITION- 38 59 16.88279(N) 077 04 37.21693(W)   ADJUSTED
 HV4491* NAVD 88 ORTHO HEIGHT -    93.3   (meters)      306.    (feet) VERTCON3
 HV4491  ______________________________________________________________________
 HV4491  GEOID HEIGHT    -        -31.904 (meters)                     GEOID18
 HV4491  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 HV4491  HORZ ORDER      -  SECOND
 HV4491
 HV4491.The horizontal coordinates were established by classical geodetic methods
 HV4491.and adjusted by the National Geodetic Survey in November 1994.
 HV4491
 HV4491.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4491.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4491
 HV4491.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4491.GEOID18 height accuracy estimate available here.
 HV4491
 HV4491.Click photographs - Photos may exist for this station.
 HV4491
 HV4491.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4491
 HV4491. The following values were computed from the NAD 83(1993) position.
 HV4491
 HV4491;                    North         East     Units Scale Factor Converg.
 HV4491;SPC MD       -   146,679.454   393,328.558   MT  0.99995176   -0 02 54.0
 HV4491;SPC MD       -   481,230.84  1,290,445.44   sFT  0.99995176   -0 02 54.0
 HV4491;UTM  18      - 4,317,499.390   320,109.906   MT  0.99999848   -1 18 25.6
 HV4491
 HV4491!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4491!SPC MD       -   0.99999037  x   0.99995176  =   0.99994213
 HV4491!UTM  18      -   0.99999037  x   0.99999848  =   0.99998885
 HV4491
 HV4491_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2010917499(NAD 83)
 HV4491
 HV4491                          SUPERSEDED SURVEY CONTROL
 HV4491
 HV4491  NAD 83(1991)-  38 59 16.88225(N)    077 04 37.21785(W) AD(       ) 2
 HV4491  NAD 83(1986)-  38 59 16.88195(N)    077 04 37.22780(W) AD(       ) 2
 HV4491  NAD 27      -  38 59 16.48656(N)    077 04 38.30332(W) AD(       ) 2
 HV4491  NGVD 29 (07/19/86)   93.5    (m)          307.     (f) VERT ANG       
 HV4491
 HV4491.Superseded values are not recommended for survey control.
 HV4491
 HV4491.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4491.See file dsdata.pdf to determine how the superseded data were derived.
 HV4491
 HV4491_MARKER: I = METAL ROD
 HV4491_SETTING: 0 = UNSPECIFIED SETTING
 HV4491_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4491
 HV4491  HISTORY     - Date     Condition        Report By
 HV4491  HISTORY     - 1969     MONUMENTED       WSSC
 HV4491  HISTORY     - 19950804 MARK NOT FOUND   USPSQD
 HV4491  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV4491
 HV4491                          STATION DESCRIPTION
 HV4491
 HV4491'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4491'THE STATION IS ABOUT 2 MILES EAST OF BETHESDA AND 1-1/2 MILES
 HV4491'NORTH OF CHEVY CHASE.
 HV4491'
 HV4491'THE STATION IS LOCATED IN THE GRASS ISLAND AT THE NORTHEAST
 HV4491'CORNER OF CONNECTICUT AVENUE (ROUTE 193) AND EAST-WEST HIGHWAY
 HV4491'(ROUTE 410).
 HV4491'
 HV4491'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4491'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 8.45 FEET SOUTH OF
 HV4491'PEPCO POLE 6208, 5.05 FEET NORTH OF THE NORTHWEST CORNER OF A
 HV4491'CONCRETE LIGHT POLE BASE AND 31.00 FEET NORTHWEST OF THE
 HV4491'INTERSECTION OF CURBS.
 HV4491
 HV4491                          STATION RECOVERY (1995)
 HV4491
 HV4491'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4491'MARK NOT FOUND.
 HV4491
 HV4491                          STATION RECOVERY (2000)
 HV4491
 HV4491'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV4491'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4337 ***********************************************************************
 JV4337  DESIGNATION -  17161 WSSC 1969
 JV4337  PID         -  JV4337
 JV4337  STATE/COUNTY-  MD/MONTGOMERY
 JV4337  COUNTRY     -  US
 JV4337  USGS QUAD   -  KENSINGTON (2016)
 JV4337
 JV4337                         *CURRENT SURVEY CONTROL
 JV4337  ______________________________________________________________________
 JV4337* NAD 83(1993) POSITION- 39 01 54.85628(N) 077 06 19.99018(W)   ADJUSTED
 JV4337* NAVD 88 ORTHO HEIGHT -    99.3   (meters)      326.    (feet) VERTCON3
 JV4337  ______________________________________________________________________
 JV4337  GEOID HEIGHT    -        -31.820 (meters)                     GEOID18
 JV4337  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 JV4337  HORZ ORDER      -  SECOND
 JV4337
 JV4337.The horizontal coordinates were established by classical geodetic methods
 JV4337.and adjusted by the National Geodetic Survey in November 1994.
 JV4337
 JV4337.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4337.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4337
 JV4337.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4337.GEOID18 height accuracy estimate available here.
 JV4337
 JV4337.Click photographs - Photos may exist for this station.
 JV4337
 JV4337.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4337
 JV4337. The following values were computed from the NAD 83(1993) position.
 JV4337
 JV4337;                    North         East     Units Scale Factor Converg.
 JV4337;SPC MD       -   151,553.230   390,860.872   MT  0.99995355   -0 03 58.5
 JV4337;SPC MD       -   497,220.89  1,282,349.38   sFT  0.99995355   -0 03 58.5
 JV4337;UTM  18      - 4,322,426.479   317,749.819   MT  1.00000900   -1 19 34.8
 JV4337
 JV4337!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4337!SPC MD       -   0.99998942  x   0.99995355  =   0.99994297
 JV4337!UTM  18      -   0.99998942  x   1.00000900  =   0.99999842
 JV4337
 JV4337:                Primary Azimuth Mark                     Grid Az
 JV4337:SPC MD       -  MEDICAL CENTER                           163 59 04.8
 JV4337:UTM  18      -  MEDICAL CENTER                           165 14 41.1
 JV4337
 JV4337_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1774922426(NAD 83)
 JV4337
 JV4337|---------------------------------------------------------------------|
 JV4337| PID    Reference Object                     Distance      Geod. Az  |
 JV4337|                                                           dddmmss.s |
 JV4337| JV4336 17162 WSSC 1969                     373.981 METERS 02016     |
 JV4337| JV4269 BETHESDA NAVAL MED CTR BCN          APPROX. 3.5 KM 1634406.8 |
 JV4337| JV4314 MEDICAL CENTER                      APPROX. 3.5 KM 1635506.3 |
 JV4337|---------------------------------------------------------------------|
 JV4337
 JV4337                          SUPERSEDED SURVEY CONTROL
 JV4337
 JV4337  NAD 83(1991)-  39 01 54.85577(N)    077 06 19.99094(W) AD(       ) 2
 JV4337  NAD 83(1986)-  39 01 54.85557(N)    077 06 20.00085(W) AD(       ) 2
 JV4337  NAD 27      -  39 01 54.46241(N)    077 06 21.07262(W) AD(       ) 2
 JV4337  NGVD 29 (07/19/86)   99.5    (m)          326.     (f) VERT ANG       
 JV4337
 JV4337.Superseded values are not recommended for survey control.
 JV4337
 JV4337.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4337.See file dsdata.pdf to determine how the superseded data were derived.
 JV4337
 JV4337_MARKER: I = METAL ROD
 JV4337_SETTING: 0 = UNSPECIFIED SETTING
 JV4337_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4337
 JV4337  HISTORY     - Date     Condition        Report By
 JV4337  HISTORY     - 1969     MONUMENTED       WSSC
 JV4337
 JV4337                          STATION DESCRIPTION
 JV4337
 JV4337'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4337'THE STATION IS ABOUT 3 MILES WEST OF WHEATON AND 2 MILE SOUTHEAST
 JV4337'OF ROCKVILLE.
 JV4337'
 JV4337'TO REACH THE STATION THE INTERSECTION OF ROCKVILLE PIKE (ROUTE
 JV4337'355) AND STRATHMORE AVENUE, GO SOUTHEAST ON ROCKVILLE PIKE FOR
 JV4337'.2 MILE TO THE ENTRANCE TO SAINT ANGELA HALL AND THE STATION IS
 JV4337'ON THE LEFT.
 JV4337'
 JV4337'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4337'AND IS 1 INCH BELOW THE GROUND.  IT IS 30.86 FEET NORTH OF PEPCO
 JV4337'POLE 64452, 73.44 FEET SOUTH ON THE SOUTHWEST CORNER OF A BRICK
 JV4337'PILLAR AND 30.37 FEET SOUTHWEST OF THE NORTHWEST CORNER OF A
 JV4337'BRICK PILLAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4336 ***********************************************************************
 JV4336  DESIGNATION -  17162 WSSC 1969
 JV4336  PID         -  JV4336
 JV4336  STATE/COUNTY-  MD/MONTGOMERY
 JV4336  COUNTRY     -  US
 JV4336  USGS QUAD   -  KENSINGTON (2016)
 JV4336
 JV4336                         *CURRENT SURVEY CONTROL
 JV4336  ______________________________________________________________________
 JV4336* NAD 83(1993) POSITION- 39 02 06.23242(N) 077 06 14.60268(W)   ADJUSTED
 JV4336* NAVD 88 ORTHO HEIGHT -    92.1   (meters)      302.    (feet) VERTCON3
 JV4336  ______________________________________________________________________
 JV4336  GEOID HEIGHT    -        -31.820 (meters)                     GEOID18
 JV4336  LAPLACE CORR    -         -3.44  (seconds)                    DEFLEC18
 JV4336  HORZ ORDER      -  SECOND
 JV4336
 JV4336.The horizontal coordinates were established by classical geodetic methods
 JV4336.and adjusted by the National Geodetic Survey in November 1994.
 JV4336
 JV4336.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4336.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4336
 JV4336.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4336.GEOID18 height accuracy estimate available here.
 JV4336
 JV4336.Click photographs - Photos may exist for this station.
 JV4336
 JV4336.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4336
 JV4336. The following values were computed from the NAD 83(1993) position.
 JV4336
 JV4336;                    North         East     Units Scale Factor Converg.
 JV4336;SPC MD       -   151,903.880   390,990.847   MT  0.99995370   -0 03 55.1
 JV4336;SPC MD       -   498,371.31  1,282,775.80   sFT  0.99995370   -0 03 55.1
 JV4336;UTM  18      - 4,322,774.205   317,887.481   MT  1.00000839   -1 19 31.8
 JV4336
 JV4336!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4336!SPC MD       -   0.99999055  x   0.99995370  =   0.99994425
 JV4336!UTM  18      -   0.99999055  x   1.00000839  =   0.99999894
 JV4336
 JV4336_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1788722774(NAD 83)
 JV4336
 JV4336                          SUPERSEDED SURVEY CONTROL
 JV4336
 JV4336  NAD 83(1991)-  39 02 06.23190(N)    077 06 14.60344(W) AD(       ) 2
 JV4336  NAD 83(1986)-  39 02 06.23170(N)    077 06 14.61334(W) AD(       ) 2
 JV4336  NAD 27      -  39 02 05.83871(N)    077 06 15.68526(W) AD(       ) 2
 JV4336  NGVD 29 (07/19/86)   92.3    (m)          303.     (f) VERT ANG       
 JV4336
 JV4336.Superseded values are not recommended for survey control.
 JV4336
 JV4336.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4336.See file dsdata.pdf to determine how the superseded data were derived.
 JV4336
 JV4336_MARKER: I = METAL ROD
 JV4336_SETTING: 0 = UNSPECIFIED SETTING
 JV4336_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4336
 JV4336  HISTORY     - Date     Condition        Report By
 JV4336  HISTORY     - 1969     MONUMENTED       WSSC
 JV4336
 JV4336                          STATION DESCRIPTION
 JV4336
 JV4336'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4336'THE STATION IS ABOUT 3 MILES WEST OF WHEATON AND 2 MILES SOUTHEAST
 JV4336'OF ROCKVILLE.
 JV4336'
 JV4336'THE STATION IS LOCATED ON THE EAST SIDE OF JOLLY WAY ABOUT 125
 JV4336'FEET NORTH OF STRATHMORE AVENUE.
 JV4336'
 JV4336'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4336'AND IS 2 INCHES BELOW THE GROUND.  IT IS 78.40 FEET SOUTH OF
 JV4336'PEPCO 654127, 41.26 FEET NORTHEAST OF PEPCO POLE 644900, 38.05
 JV4336'FEET WEST OF THE NORTHWEST CORNER AND 51.53 FEET NORTHWEST OF
 JV4336'THE SOUTHWEST CORNER OF HOUSE 10901.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4494 ***********************************************************************
 HV4494  DESIGNATION -  17163 WSSC 1969
 HV4494  PID         -  HV4494
 HV4494  STATE/COUNTY-  MD/MONTGOMERY
 HV4494  COUNTRY     -  US
 HV4494  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4494
 HV4494                         *CURRENT SURVEY CONTROL
 HV4494  ______________________________________________________________________
 HV4494* NAD 83(1993) POSITION- 38 59 37.86131(N) 077 05 46.97137(W)   ADJUSTED
 HV4494* NAVD 88 ORTHO HEIGHT -    99.1   (meters)      325.    (feet) VERTCON3
 HV4494  ______________________________________________________________________
 HV4494  GEOID HEIGHT    -        -31.868 (meters)                     GEOID18
 HV4494  LAPLACE CORR    -         -3.08  (seconds)                    DEFLEC18
 HV4494  HORZ ORDER      -  SECOND
 HV4494
 HV4494.The horizontal coordinates were established by classical geodetic methods
 HV4494.and adjusted by the National Geodetic Survey in November 1994.
 HV4494
 HV4494.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4494.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4494
 HV4494.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4494.GEOID18 height accuracy estimate available here.
 HV4494
 HV4494.Click photographs - Photos may exist for this station.
 HV4494
 HV4494.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4494
 HV4494. The following values were computed from the NAD 83(1993) position.
 HV4494
 HV4494;                    North         East     Units Scale Factor Converg.
 HV4494;SPC MD       -   147,327.944   391,650.546   MT  0.99995196   -0 03 37.8
 HV4494;SPC MD       -   483,358.43  1,284,940.17   sFT  0.99995196   -0 03 37.8
 HV4494;UTM  18      - 4,318,184.624   318,446.463   MT  1.00000589   -1 19 10.1
 HV4494
 HV4494!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4494!SPC MD       -   0.99998945  x   0.99995196  =   0.99994141
 HV4494!UTM  18      -   0.99998945  x   1.00000589  =   0.99999534
 HV4494
 HV4494:                Primary Azimuth Mark                     Grid Az
 HV4494:SPC MD       -  MEDICAL CENTER                           010 47 17.2
 HV4494:UTM  18      -  MEDICAL CENTER                           012 02 49.5
 HV4494
 HV4494_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1844618184(NAD 83)
 HV4494
 HV4494|---------------------------------------------------------------------|
 HV4494| PID    Reference Object                     Distance      Geod. Az  |
 HV4494|                                                           dddmmss.s |
 HV4494| JV4314 MEDICAL CENTER                      APPROX. 0.9 KM 0104339.4 |
 HV4494| JV4269 BETHESDA NAVAL MED CTR BCN          APPROX. 0.9 KM 0112438.2 |
 HV4494| HV4495 17164 WSSC 1969                     325.917 METERS 35351     |
 HV4494|---------------------------------------------------------------------|
 HV4494
 HV4494                          SUPERSEDED SURVEY CONTROL
 HV4494
 HV4494  NAD 83(1991)-  38 59 37.86079(N)    077 05 46.97225(W) AD(       ) 2
 HV4494  NAD 83(1986)-  38 59 37.86059(N)    077 05 46.98224(W) AD(       ) 2
 HV4494  NAD 27      -  38 59 37.46536(N)    077 05 48.05515(W) AD(       ) 2
 HV4494  NGVD 29 (07/19/86)   99.3    (m)          326.     (f) VERT ANG       
 HV4494
 HV4494.Superseded values are not recommended for survey control.
 HV4494
 HV4494.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4494.See file dsdata.pdf to determine how the superseded data were derived.
 HV4494
 HV4494_MARKER: B = BOLT
 HV4494_SETTING: 0 = UNSPECIFIED SETTING
 HV4494_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4494
 HV4494  HISTORY     - Date     Condition        Report By
 HV4494  HISTORY     - 1969     MONUMENTED       WSSC
 HV4494  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV4494
 HV4494                          STATION DESCRIPTION
 HV4494
 HV4494'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4494'THE STATION IS ABOUT 3 MILES WEST OF SILVER SPRING AND 1 MILE
 HV4494'EAST OF BETHESDA.
 HV4494'
 HV4494'THE STATION IS LOCATED ON THE WEST SIDE OF ROUTE 355 (ROCKVILLE
 HV4494'PIKE) ABOUT 100 FEET NORTH OF CHESTNUT STREET AT THE ENTRANCE
 HV4494'TO GOVERNORS HOUSE MOTEL.
 HV4494'
 HV4494'THE STATION MARK IS A BRASS BOLT IN THE CONCRETE CURB.  IT IS
 HV4494'13.8 FEET NORTHEAST OF PEPCO POLE 633742 AND 34.5 FEET NORTH ON
 HV4494'THE DRIVE LEADING TO GOVERNORS HOUSE MOTEL.
 HV4494
 HV4494                          STATION RECOVERY (2000)
 HV4494
 HV4494'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV4494'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4495 ***********************************************************************
 HV4495  DESIGNATION -  17164 WSSC 1969
 HV4495  PID         -  HV4495
 HV4495  STATE/COUNTY-  MD/MONTGOMERY
 HV4495  COUNTRY     -  US
 HV4495  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4495
 HV4495                         *CURRENT SURVEY CONTROL
 HV4495  ______________________________________________________________________
 HV4495* NAD 83(1993) POSITION- 38 59 48.36922(N) 077 05 48.42310(W)   ADJUSTED
 HV4495* NAVD 88 ORTHO HEIGHT -    96.4   (meters)      316.    (feet) VERTCON3
 HV4495  ______________________________________________________________________
 HV4495  GEOID HEIGHT    -        -31.865 (meters)                     GEOID18
 HV4495  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 HV4495  HORZ ORDER      -  SECOND
 HV4495
 HV4495.The horizontal coordinates were established by classical geodetic methods
 HV4495.and adjusted by the National Geodetic Survey in November 1994.
 HV4495
 HV4495.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4495.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4495
 HV4495.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4495.GEOID18 height accuracy estimate available here.
 HV4495
 HV4495.Click photographs - Photos may exist for this station.
 HV4495
 HV4495.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4495
 HV4495. The following values were computed from the NAD 83(1993) position.
 HV4495
 HV4495;                    North         East     Units Scale Factor Converg.
 HV4495;SPC MD       -   147,652.004   391,615.955   MT  0.99995207   -0 03 38.7
 HV4495;SPC MD       -   484,421.62  1,284,826.68   sFT  0.99995207   -0 03 38.7
 HV4495;UTM  18      - 4,318,509.383   318,418.999   MT  1.00000601   -1 19 11.3
 HV4495
 HV4495!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4495!SPC MD       -   0.99998988  x   0.99995207  =   0.99994195
 HV4495!UTM  18      -   0.99998988  x   1.00000601  =   0.99999589
 HV4495
 HV4495_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1841818509(NAD 83)
 HV4495
 HV4495                          SUPERSEDED SURVEY CONTROL
 HV4495
 HV4495  NAD 83(1991)-  38 59 48.36870(N)    077 05 48.42397(W) AD(       ) 2
 HV4495  NAD 83(1986)-  38 59 48.36851(N)    077 05 48.43395(W) AD(       ) 2
 HV4495  NAD 27      -  38 59 47.97343(N)    077 05 49.50681(W) AD(       ) 2
 HV4495  NGVD 29 (07/19/86)   96.6    (m)          317.     (f) VERT ANG       
 HV4495
 HV4495.Superseded values are not recommended for survey control.
 HV4495
 HV4495.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4495.See file dsdata.pdf to determine how the superseded data were derived.
 HV4495
 HV4495_MARKER: I = METAL ROD
 HV4495_SETTING: 0 = UNSPECIFIED SETTING
 HV4495_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4495
 HV4495  HISTORY     - Date     Condition        Report By
 HV4495  HISTORY     - 1969     MONUMENTED       WSSC
 HV4495  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV4495
 HV4495                          STATION DESCRIPTION
 HV4495
 HV4495'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4495'THE STATION IS ABOUT 3 MILES WEST OF SILVER SPRING AND 1 MILE
 HV4495'EAST OF BETHESDA.
 HV4495'
 HV4495'THE STATION IS LOCATED ON THE SOUTHWEST CORNER OF ROUTE 355
 HV4495'(ROCKVILLE PIKE) AND CENTER DRIVE.
 HV4495'
 HV4495'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4495'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 5.40 FEET SOUTH OF C
 HV4495'AND P POLE M-115, 27.90 FEET NORTHEAST OF THE NORTHWEST CORNER
 HV4495'AND 27.80 FEET NORTH OF THE NORTHEAST CORNER OF A TRAFFIC LIGHT
 HV4495'POLE BASE.
 HV4495
 HV4495                          STATION RECOVERY (2000)
 HV4495
 HV4495'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV4495'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4483 ***********************************************************************
 JV4483  DESIGNATION -  17165 WSSC 1969
 JV4483  PID         -  JV4483
 JV4483  STATE/COUNTY-  MD/MONTGOMERY
 JV4483  COUNTRY     -  US
 JV4483  USGS QUAD   -  GERMANTOWN (2016)
 JV4483
 JV4483                         *CURRENT SURVEY CONTROL
 JV4483  ______________________________________________________________________
 JV4483* NAD 83(1991) POSITION- 39 09 14.74517(N) 077 22 03.49105(W)   ADJUSTED
 JV4483* NAVD 88 ORTHO HEIGHT -   123.6   (meters)      406.    (feet) VERTCON3
 JV4483  ______________________________________________________________________
 JV4483  GEOID HEIGHT    -        -32.010 (meters)                     GEOID18
 JV4483  LAPLACE CORR    -          4.47  (seconds)                    DEFLEC18
 JV4483  HORZ ORDER      -  SECOND
 JV4483
 JV4483.The horizontal coordinates were established by classical geodetic methods
 JV4483.and adjusted by the National Geodetic Survey in January 1992.
 JV4483
 JV4483.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4483.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4483
 JV4483.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4483.GEOID18 height accuracy estimate available here.
 JV4483
 JV4483.Click photographs - Photos may exist for this station.
 JV4483
 JV4483.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4483
 JV4483. The following values were computed from the NAD 83(1991) position.
 JV4483
 JV4483;                    North         East     Units Scale Factor Converg.
 JV4483;SPC MD       -   165,176.701   368,223.480   MT  0.99996161   -0 13 50.7
 JV4483;SPC MD       -   541,917.23  1,208,079.87   sFT  0.99996161   -0 13 50.7
 JV4483;UTM  18      - 4,336,546.816   295,415.726   MT  1.00011539   -1 29 43.7
 JV4483
 JV4483!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4483!SPC MD       -   0.99998563  x   0.99996161  =   0.99994724
 JV4483!UTM  18      -   0.99998563  x   1.00011539  =   1.00010102
 JV4483
 JV4483:                Primary Azimuth Mark                     Grid Az
 JV4483:SPC MD       -  MOORE                                    310 15 35.8
 JV4483:UTM  18      -  MOORE                                    311 31 28.8
 JV4483
 JV4483_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9541536546(NAD 83)
 JV4483
 JV4483|---------------------------------------------------------------------|
 JV4483| PID    Reference Object                     Distance      Geod. Az  |
 JV4483|                                                           dddmmss.s |
 JV4483| JV4539 MOORE                               APPROX. 2.3 KM 3100145.1 |
 JV4483|---------------------------------------------------------------------|
 JV4483
 JV4483                          SUPERSEDED SURVEY CONTROL
 JV4483
 JV4483  NAD 83(1986)-  39 09 14.74485(N)    077 22 03.50120(W) AD(       ) 2
 JV4483  NAD 27      -  39 09 14.36072(N)    077 22 04.54437(W) AD(       ) 2
 JV4483  NGVD 29 (07/19/86)  123.8    (m)          406.     (f) VERT ANG       
 JV4483
 JV4483.Superseded values are not recommended for survey control.
 JV4483
 JV4483.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4483.See file dsdata.pdf to determine how the superseded data were derived.
 JV4483
 JV4483_MARKER: I = METAL ROD
 JV4483_SETTING: 0 = UNSPECIFIED SETTING
 JV4483_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4483
 JV4483  HISTORY     - Date     Condition        Report By
 JV4483  HISTORY     - 1969     MONUMENTED       WSSC
 JV4483
 JV4483                          STATION DESCRIPTION
 JV4483
 JV4483'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4483'THE STATION IS ABOUT 2 MILES NORTHWEST OF DAWSONVILLE AND 2-1/2
 JV4483'MILES NORTHEAST OF POOLESVILLE.
 JV4483'
 JV4483'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 28 AND
 JV4483'ROUTE 117, GO NORTHWEST ON ROUTE 28 FOR .5 MILES TO THE STATION
 JV4483'ON THE LEFT.
 JV4483'
 JV4483'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4483'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 22.72 FEET SOUTHEAST
 JV4483'OF C AND P POLE NO. 483, 5.03 FEET NORTHEAST OF A NAIL IN THE
 JV4483'TOP OF A FENCE POST, AND 6.7 FEET SOUTH OF THE EDGE OF ROUTE 28.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4480 ***********************************************************************
 JV4480  DESIGNATION -  17166 WSSC 1969
 JV4480  PID         -  JV4480
 JV4480  STATE/COUNTY-  MD/MONTGOMERY
 JV4480  COUNTRY     -  US
 JV4480  USGS QUAD   -  GERMANTOWN (2016)
 JV4480
 JV4480                         *CURRENT SURVEY CONTROL
 JV4480  ______________________________________________________________________
 JV4480* NAD 83(1991) POSITION- 39 08 50.72320(N) 077 21 33.72556(W)   ADJUSTED
 JV4480* NAVD 88 ORTHO HEIGHT -   112.6   (meters)      369.    (feet) VERTCON3
 JV4480  ______________________________________________________________________
 JV4480  GEOID HEIGHT    -        -31.984 (meters)                     GEOID18
 JV4480  LAPLACE CORR    -          4.20  (seconds)                    DEFLEC18
 JV4480  HORZ ORDER      -  SECOND
 JV4480
 JV4480.The horizontal coordinates were established by classical geodetic methods
 JV4480.and adjusted by the National Geodetic Survey in January 1992.
 JV4480
 JV4480.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4480.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4480
 JV4480.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4480.GEOID18 height accuracy estimate available here.
 JV4480
 JV4480.Click photographs - Photos may exist for this station.
 JV4480
 JV4480.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4480
 JV4480. The following values were computed from the NAD 83(1991) position.
 JV4480
 JV4480;                    North         East     Units Scale Factor Converg.
 JV4480;SPC MD       -   164,433.089   368,935.219   MT  0.99996105   -0 13 32.0
 JV4480;SPC MD       -   539,477.56  1,210,414.96   sFT  0.99996105   -0 13 32.0
 JV4480;UTM  18      - 4,335,787.562   296,110.986   MT  1.00011189   -1 29 24.1
 JV4480
 JV4480!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4480!SPC MD       -   0.99998735  x   0.99996105  =   0.99994840
 JV4480!UTM  18      -   0.99998735  x   1.00011189  =   1.00009924
 JV4480
 JV4480_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9611035787(NAD 83)
 JV4480
 JV4480                          SUPERSEDED SURVEY CONTROL
 JV4480
 JV4480  NAD 83(1986)-  39 08 50.72292(N)    077 21 33.73565(W) AD(       ) 2
 JV4480  NAD 27      -  39 08 50.33831(N)    077 21 34.77994(W) AD(       ) 2
 JV4480  NGVD 29 (07/19/86)  112.8    (m)          370.     (f) VERT ANG       
 JV4480
 JV4480.Superseded values are not recommended for survey control.
 JV4480
 JV4480.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4480.See file dsdata.pdf to determine how the superseded data were derived.
 JV4480
 JV4480_MARKER: I = METAL ROD
 JV4480_SETTING: 0 = UNSPECIFIED SETTING
 JV4480_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4480
 JV4480  HISTORY     - Date     Condition        Report By
 JV4480  HISTORY     - 1969     MONUMENTED       WSSC
 JV4480
 JV4480                          STATION DESCRIPTION
 JV4480
 JV4480'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4480'THE STATION IS ABOUT 2 MILES NORTHWEST OF DAWSONVILLE AND 2-1/2
 JV4480'MILES NORTHEAST OF POOLESVILLE.
 JV4480'
 JV4480'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 28 AND
 JV4480'ROUTE 117, GO SOUTHEAST ON ROUTE 28 FOR .2 MILES TO THE STATION
 JV4480'ON THE RIGHT.
 JV4480'
 JV4480'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4480'AND IS FLUSH WITH THE SURFACE.  IT IS ON THE SOUTHWEST CORNER
 JV4480'OF ROUTE 28 AND A DRIVE LEADING TO A FARM AND IS 61.45 FEET
 JV4480'SOUTH OF C AND P POLE NO. 460, 58.22 FEET SOUTHEAST OF A NAIL
 JV4480'IN A FENCE POST, 6.91 FEET NORTH OF A 15-INCH WALNUT, AND 75.13
 JV4480'FEET NORTH OF A 15-INCH WALNUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4482 ***********************************************************************
 JV4482  DESIGNATION -  17167 WSSC 1969
 JV4482  PID         -  JV4482
 JV4482  STATE/COUNTY-  MD/MONTGOMERY
 JV4482  COUNTRY     -  US
 JV4482  USGS QUAD   -  GERMANTOWN (2016)
 JV4482
 JV4482                         *CURRENT SURVEY CONTROL
 JV4482  ______________________________________________________________________
 JV4482* NAD 83(1991) POSITION- 39 10 17.28130(N) 077 22 02.30975(W)   ADJUSTED
 JV4482* NAVD 88 ORTHO HEIGHT -   154.8   (meters)      508.    (feet) VERTCON3
 JV4482  ______________________________________________________________________
 JV4482  GEOID HEIGHT    -        -32.029 (meters)                     GEOID18
 JV4482  LAPLACE CORR    -          4.48  (seconds)                    DEFLEC18
 JV4482  HORZ ORDER      -  SECOND
 JV4482
 JV4482.The horizontal coordinates were established by classical geodetic methods
 JV4482.and adjusted by the National Geodetic Survey in January 1992.
 JV4482
 JV4482.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4482.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4482
 JV4482.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4482.GEOID18 height accuracy estimate available here.
 JV4482
 JV4482.Click photographs - Photos may exist for this station.
 JV4482
 JV4482.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4482
 JV4482. The following values were computed from the NAD 83(1991) position.
 JV4482
 JV4482;                    North         East     Units Scale Factor Converg.
 JV4482;SPC MD       -   167,105.018   368,259.602   MT  0.99996313   -0 13 49.9
 JV4482;SPC MD       -   548,243.71  1,208,198.38   sFT  0.99996313   -0 13 49.9
 JV4482;UTM  18      - 4,338,474.161   295,494.422   MT  1.00011499   -1 29 44.9
 JV4482
 JV4482!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4482!SPC MD       -   0.99998074  x   0.99996313  =   0.99994387
 JV4482!UTM  18      -   0.99998074  x   1.00011499  =   1.00009573
 JV4482
 JV4482:                Primary Azimuth Mark                     Grid Az
 JV4482:SPC MD       -  MOORE                                    256 01 43.7
 JV4482:UTM  18      -  MOORE                                    257 17 38.7
 JV4482
 JV4482_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9549438474(NAD 83)
 JV4482
 JV4482|---------------------------------------------------------------------|
 JV4482| PID    Reference Object                     Distance      Geod. Az  |
 JV4482|                                                           dddmmss.s |
 JV4482| JV4461 BROWNSTOWN PEPCO MICROWAVE          APPROX. 7.4 KM 1202425.8 |
 JV4482| JV4539 MOORE                               APPROX. 1.8 KM 2554753.8 |
 JV4482|---------------------------------------------------------------------|
 JV4482
 JV4482                          SUPERSEDED SURVEY CONTROL
 JV4482
 JV4482  NAD 83(1986)-  39 10 17.28097(N)    077 22 02.32004(W) AD(       ) 2
 JV4482  NAD 27      -  39 10 16.89787(N)    077 22 03.36266(W) AD(       ) 2
 JV4482  NGVD 29 (07/19/86)  155.0    (m)          509.     (f) VERT ANG       
 JV4482
 JV4482.Superseded values are not recommended for survey control.
 JV4482
 JV4482.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4482.See file dsdata.pdf to determine how the superseded data were derived.
 JV4482
 JV4482_MARKER: I = METAL ROD
 JV4482_SETTING: 0 = UNSPECIFIED SETTING
 JV4482_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4482
 JV4482  HISTORY     - Date     Condition        Report By
 JV4482  HISTORY     - 1969     MONUMENTED       WSSC
 JV4482
 JV4482                          STATION DESCRIPTION
 JV4482
 JV4482'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4482'THE STATION IS ABOUT 3 MILES NORTHWEST OF DAWSONVILLE AND 3 MILES
 JV4482'SOUTHWEST OF BOYDS.
 JV4482'
 JV4482'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 117 AND
 JV4482'MOORE ROAD, GO WEST ON MOORE ROAD FOR .4 MILES TO A CURVE IN
 JV4482'THE ROAD AND A TRACK ROAD ON THE LEFT.  TURN LEFT AND GO SOUTHWEST
 JV4482'ON THE TRACK ROAD FOR .2 MILES TO THE HIGHEST POINT IN THE
 JV4482'IMMEDIATE VICINITY AND TWO PEPCO POWER LINE TOWERS.
 JV4482'
 JV4482'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4482'AND PROJECTS 4 INCHES ABOVE THE SURFACE.  IT IS IN THE CENTERLINE
 JV4482'OF PEPCO POWER LINE TOWER NO. 355-S AND IS 17.43 FEET SOUTHEAST
 JV4482'OF THE NORTHWEST LEG, 18.22 FEET SOUTHWEST OF THE NORTHWEST LEG,
 JV4482'AND 23.43 FEET NORTHEAST OF THE SOUTHWEST LEG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4481 ***********************************************************************
 JV4481  DESIGNATION -  17168 WSSC 1969
 JV4481  PID         -  JV4481
 JV4481  STATE/COUNTY-  MD/MONTGOMERY
 JV4481  COUNTRY     -  US
 JV4481  USGS QUAD   -  GERMANTOWN (2016)
 JV4481
 JV4481                         *CURRENT SURVEY CONTROL
 JV4481  ______________________________________________________________________
 JV4481* NAD 83(1991) POSITION- 39 10 03.67552(N) 077 21 35.42051(W)   ADJUSTED
 JV4481* NAVD 88 ORTHO HEIGHT -   120.7   (meters)      396.    (feet) VERTCON3
 JV4481  ______________________________________________________________________
 JV4481  GEOID HEIGHT    -        -32.007 (meters)                     GEOID18
 JV4481  LAPLACE CORR    -          4.32  (seconds)                    DEFLEC18
 JV4481  HORZ ORDER      -  SECOND
 JV4481
 JV4481.The horizontal coordinates were established by classical geodetic methods
 JV4481.and adjusted by the National Geodetic Survey in January 1992.
 JV4481
 JV4481.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4481.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4481
 JV4481.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4481.GEOID18 height accuracy estimate available here.
 JV4481
 JV4481.Click photographs - Photos may exist for this station.
 JV4481
 JV4481.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4481
 JV4481. The following values were computed from the NAD 83(1991) position.
 JV4481
 JV4481;                    North         East     Units Scale Factor Converg.
 JV4481;SPC MD       -   166,682.884   368,903.387   MT  0.99996279   -0 13 33.1
 JV4481;SPC MD       -   546,858.76  1,210,310.53   sFT  0.99996279   -0 13 33.1
 JV4481;UTM  18      - 4,338,037.849   296,128.825   MT  1.00011180   -1 29 27.5
 JV4481
 JV4481!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4481!SPC MD       -   0.99998609  x   0.99996279  =   0.99994888
 JV4481!UTM  18      -   0.99998609  x   1.00011180  =   1.00009788
 JV4481
 JV4481:                Primary Azimuth Mark                     Grid Az
 JV4481:SPC MD       -  17167 WSSC 1969                          303 15 11.3
 JV4481:UTM  18      -  17167 WSSC 1969                          304 31 05.7
 JV4481
 JV4481_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9612838037(NAD 83)
 JV4481
 JV4481|---------------------------------------------------------------------|
 JV4481| PID    Reference Object                     Distance      Geod. Az  |
 JV4481|                                                           dddmmss.s |
 JV4481| JV4482 17167 WSSC 1969                     APPROX. 0.8 KM 3030138.2 |
 JV4481|---------------------------------------------------------------------|
 JV4481
 JV4481                          SUPERSEDED SURVEY CONTROL
 JV4481
 JV4481  NAD 83(1986)-  39 10 03.67524(N)    077 21 35.43079(W) AD(       ) 2
 JV4481  NAD 27      -  39 10 03.29189(N)    077 21 36.47432(W) AD(       ) 2
 JV4481  NGVD 29 (07/19/86)  120.9    (m)          397.     (f) VERT ANG       
 JV4481
 JV4481.Superseded values are not recommended for survey control.
 JV4481
 JV4481.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4481.See file dsdata.pdf to determine how the superseded data were derived.
 JV4481
 JV4481_MARKER: I = METAL ROD
 JV4481_SETTING: 0 = UNSPECIFIED SETTING
 JV4481_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4481
 JV4481  HISTORY     - Date     Condition        Report By
 JV4481  HISTORY     - 1969     MONUMENTED       WSSC
 JV4481
 JV4481                          STATION DESCRIPTION
 JV4481
 JV4481'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4481'THE STATION IS ABOUT 3 MILES NORTHWEST OF DAWSONVILLE AND 3
 JV4481'MILES SOUTHWEST OF BOYDS.
 JV4481'
 JV4481'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 117 AND
 JV4481'MOORE ROAD, GO SOUTH ON ROUTE 117 FOR .3 MILES TO THE ENTRANCE
 JV4481'TO FRIEND ARDWISE FARM AND THE STATION IS ON THE LEFT.
 JV4481'
 JV4481'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4481'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 66.85 FEET SOUTH OF
 JV4481'C AND P POLE NO. 45, 83.90 FEET NORTH OF A POWER POLE, AND 73.10
 JV4481'FEET SOUTHEAST OF A POWER POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4335 ***********************************************************************
 JV4335  DESIGNATION -  17170 WSSC 1969
 JV4335  PID         -  JV4335
 JV4335  STATE/COUNTY-  MD/MONTGOMERY
 JV4335  COUNTRY     -  US
 JV4335  USGS QUAD   -  KENSINGTON (2016)
 JV4335
 JV4335                         *CURRENT SURVEY CONTROL
 JV4335  ______________________________________________________________________
 JV4335* NAD 83(1991) POSITION- 39 05 54.98021(N) 077 06 11.80075(W)   ADJUSTED
 JV4335* NAVD 88 ORTHO HEIGHT -   126.8   (meters)      416.    (feet) VERTCON3
 JV4335  ______________________________________________________________________
 JV4335  GEOID HEIGHT    -        -31.779 (meters)                     GEOID18
 JV4335  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC18
 JV4335  HORZ ORDER      -  SECOND
 JV4335
 JV4335.The horizontal coordinates were established by classical geodetic methods
 JV4335.and adjusted by the National Geodetic Survey in January 1992.
 JV4335
 JV4335.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4335.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4335
 JV4335.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4335.GEOID18 height accuracy estimate available here.
 JV4335
 JV4335.Click photographs - Photos may exist for this station.
 JV4335
 JV4335.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4335
 JV4335. The following values were computed from the NAD 83(1991) position.
 JV4335
 JV4335;                    North         East     Units Scale Factor Converg.
 JV4335;SPC MD       -   158,957.606   391,066.213   MT  0.99995739   -0 03 53.4
 JV4335;SPC MD       -   521,513.41  1,283,023.07   sFT  0.99995739   -0 03 53.4
 JV4335;UTM  18      - 4,329,824.934   318,118.082   MT  1.00000735   -1 19 36.5
 JV4335
 JV4335!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4335!SPC MD       -   0.99998509  x   0.99995739  =   0.99994248
 JV4335!UTM  18      -   0.99998509  x   1.00000735  =   0.99999244
 JV4335
 JV4335:                Primary Azimuth Mark                     Grid Az
 JV4335:SPC MD       -  NORBECK                                  059 55 48.5
 JV4335:UTM  18      -  NORBECK                                  061 11 31.6
 JV4335
 JV4335_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1811829824(NAD 83)
 JV4335
 JV4335|---------------------------------------------------------------------|
 JV4335| PID    Reference Object                     Distance      Geod. Az  |
 JV4335|                                                           dddmmss.s |
 JV4335| JV4312 NORBECK                             APPROX. 2.2 KM 0595155.1 |
 JV4335| JV4344 ROCKVILLE E MUN TANK                APPROX. 3.7 KM 2401515.8 |
 JV4335|---------------------------------------------------------------------|
 JV4335
 JV4335                          SUPERSEDED SURVEY CONTROL
 JV4335
 JV4335  NAD 83(1986)-  39 05 54.97995(N)    077 06 11.81075(W) AD(       ) 2
 JV4335  NAD 27      -  39 05 54.59054(N)    077 06 12.88247(W) AD(       ) 2
 JV4335  NGVD 29 (07/19/86)  127.0    (m)          417.     (f) VERT ANG       
 JV4335
 JV4335.Superseded values are not recommended for survey control.
 JV4335
 JV4335.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4335.See file dsdata.pdf to determine how the superseded data were derived.
 JV4335
 JV4335_MARKER: I = METAL ROD
 JV4335_SETTING: 0 = UNSPECIFIED SETTING
 JV4335_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4335
 JV4335  HISTORY     - Date     Condition        Report By
 JV4335  HISTORY     - 1969     MONUMENTED       WSSC
 JV4335
 JV4335                          STATION DESCRIPTION
 JV4335
 JV4335'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4335'THE STATION IS ABOUT 1-3/4 MILES SOUTHWEST OF NORBECK AND 3
 JV4335'MILES NORTHEAST OF ROCKVILLE.
 JV4335'
 JV4335'TO REACH THE STATION FROM THE INTERSECTION OF BEL PRE ROAD AND
 JV4335'NORBECK ROAD, GO WEST ON NORBECK ROAD FOR .30 MILES TO THE STATION
 JV4335'ON THE RIGHT.
 JV4335'
 JV4335'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4335'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 58.73 FEET SOUTHEAST
 JV4335'OF THE SOUTHWEST CORNER OF THE PORCH, 49.36 FEET SOUTHEAST OF
 JV4335'THE SOUTHEAST CORNER OF THE PORCH AND 50.49 FEET SOUTHWEST OF
 JV4335'THE SOUTHEAST CORNER OF HOUSE 5121.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4338 ***********************************************************************
 JV4338  DESIGNATION -  17171 WSSC 1969
 JV4338  PID         -  JV4338
 JV4338  STATE/COUNTY-  MD/MONTGOMERY
 JV4338  COUNTRY     -  US
 JV4338  USGS QUAD   -  KENSINGTON (2016)
 JV4338
 JV4338                         *CURRENT SURVEY CONTROL
 JV4338  ______________________________________________________________________
 JV4338* NAD 83(1993) POSITION- 39 05 46.63008(N) 077 06 35.44297(W)   ADJUSTED
 JV4338* NAVD 88 ORTHO HEIGHT -   111.3   (meters)      365.    (feet) VERTCON3
 JV4338  ______________________________________________________________________
 JV4338  GEOID HEIGHT    -        -31.771 (meters)                     GEOID18
 JV4338  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 JV4338  HORZ ORDER      -  SECOND
 JV4338
 JV4338.The horizontal coordinates were established by classical geodetic methods
 JV4338.and adjusted by the National Geodetic Survey in November 1994.
 JV4338
 JV4338.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4338.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4338
 JV4338.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4338.GEOID18 height accuracy estimate available here.
 JV4338
 JV4338.Click photographs - Photos may exist for this station.
 JV4338
 JV4338.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4338
 JV4338. The following values were computed from the NAD 83(1993) position.
 JV4338
 JV4338;                    North         East     Units Scale Factor Converg.
 JV4338;SPC MD       -   158,700.778   390,497.818   MT  0.99995723   -0 04 08.2
 JV4338;SPC MD       -   520,670.80  1,281,158.26   sFT  0.99995723   -0 04 08.2
 JV4338;UTM  18      - 4,329,580.674   317,544.139   MT  1.00000992   -1 19 51.2
 JV4338
 JV4338!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4338!SPC MD       -   0.99998752  x   0.99995723  =   0.99994476
 JV4338!UTM  18      -   0.99998752  x   1.00000992  =   0.99999744
 JV4338
 JV4338_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1754429580(NAD 83)
 JV4338
 JV4338                          SUPERSEDED SURVEY CONTROL
 JV4338
 JV4338  NAD 83(1991)-  39 05 46.63007(N)    077 06 35.44297(W) AD(       ) 2
 JV4338  NAD 83(1986)-  39 05 46.62983(N)    077 06 35.45297(W) AD(       ) 2
 JV4338  NAD 27      -  39 05 46.24039(N)    077 06 36.52400(W) AD(       ) 2
 JV4338  NGVD 29 (07/19/86)  111.5    (m)          366.     (f) VERT ANG       
 JV4338
 JV4338.Superseded values are not recommended for survey control.
 JV4338
 JV4338.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4338.See file dsdata.pdf to determine how the superseded data were derived.
 JV4338
 JV4338_MARKER: I = METAL ROD
 JV4338_SETTING: 0 = UNSPECIFIED SETTING
 JV4338_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4338
 JV4338  HISTORY     - Date     Condition        Report By
 JV4338  HISTORY     - 1969     MONUMENTED       WSSC
 JV4338
 JV4338                          STATION DESCRIPTION
 JV4338
 JV4338'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4338'THE STATION IS ABOUT 1-3/4 MILES SOUTHWEST OF NORBECK AND IS 3
 JV4338'MILES NORTHEAST OF ROCKVILLE.
 JV4338'
 JV4338'THE STATION IS LOCATED ON THE NORTHEAST CORNER OF NORBECK ROAD
 JV4338'AND BAUER DRIVE.
 JV4338'
 JV4338'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4338'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 38.73 FEET SOUTH OF
 JV4338'PEPCO POLE 747837, 30.46 FEET SOUTHEAST OF CENTERLINE OF A MANHOLE,
 JV4338'36.48 FEET SOUTHWEST ON THE NORTHWEST CORNER OF A CONCRETE CATCH
 JV4338'BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4260 ***********************************************************************
 JV4260  DESIGNATION -  17172
 JV4260  PID         -  JV4260
 JV4260  STATE/COUNTY-  MD/MONTGOMERY
 JV4260  COUNTRY     -  US
 JV4260  USGS QUAD   -  SANDY SPRING (2016)
 JV4260
 JV4260                         *CURRENT SURVEY CONTROL
 JV4260  ______________________________________________________________________
 JV4260* NAD 83(1991) POSITION- 39 09 41.51172(N) 077 04 48.26510(W)   ADJUSTED
 JV4260* NAVD 88 ORTHO HEIGHT -   147.7   (meters)      485.    (feet) VERTCON3
 JV4260  ______________________________________________________________________
 JV4260  GEOID HEIGHT    -        -31.800 (meters)                     GEOID18
 JV4260  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 JV4260  HORZ ORDER      -  SECOND
 JV4260
 JV4260.The horizontal coordinates were established by classical geodetic methods
 JV4260.and adjusted by the National Geodetic Survey in January 1992.
 JV4260
 JV4260.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4260.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4260
 JV4260.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4260.GEOID18 height accuracy estimate available here.
 JV4260
 JV4260.Click photographs - Photos may exist for this station.
 JV4260
 JV4260.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4260
 JV4260. The following values were computed from the NAD 83(1991) position.
 JV4260
 JV4260;                    North         East     Units Scale Factor Converg.
 JV4260;SPC MD       -   165,941.159   393,079.570   MT  0.99996225   -0 03 00.9
 JV4260;SPC MD       -   544,425.29  1,289,628.56   sFT  0.99996225   -0 03 00.9
 JV4260;UTM  18      - 4,336,762.715   320,284.953   MT  0.99999769   -1 18 50.2
 JV4260
 JV4260!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4260!SPC MD       -   0.99998182  x   0.99996225  =   0.99994407
 JV4260!UTM  18      -   0.99998182  x   0.99999769  =   0.99997951
 JV4260
 JV4260_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2028436762(NAD 83)
 JV4260
 JV4260                          SUPERSEDED SURVEY CONTROL
 JV4260
 JV4260  NAD 83(1986)-  39 09 41.51137(N)    077 04 48.27489(W) AD(       ) 2
 JV4260  NAD 27      -  39 09 41.12521(N)    077 04 49.34935(W) AD(       ) 2
 JV4260  NGVD 29 (07/19/86)  147.9    (m)          485.     (f) VERT ANG       
 JV4260
 JV4260.Superseded values are not recommended for survey control.
 JV4260
 JV4260.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4260.See file dsdata.pdf to determine how the superseded data were derived.
 JV4260
 JV4260_MARKER: DD = SURVEY DISK
 JV4260_SETTING: 0 = UNSPECIFIED SETTING
 JV4260
 JV4260  HISTORY     - Date     Condition        Report By
 JV4260  HISTORY     - 1969     MONUMENTED       WSSC
 JV4260  HISTORY     - 19950323 MARK NOT FOUND   USPSQD
 JV4260
 JV4260                          STATION DESCRIPTION
 JV4260
 JV4260'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4260'THE STATION IS ABOUT 1.0 MILE NORTHWEST OF OLNEY AND 3.2 MILES
 JV4260'SOUTHEAST OF CLAYSVILLE, .1 MILE EAST OF BOWIE MILL ROAD.
 JV4260'
 JV4260'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 97 AND ROUTE
 JV4260'108 AT OLNEY, GO NORTHWEST ON ROUTE 108 FOR 1.0 MILE TO A
 JV4260'CONCRETE HEADWALL ON THE LEFT.
 JV4260'
 JV4260'THE STATION MARK IS A STANDARD DISK SET FLUSH IN THE TOP OF A
 JV4260'CONCRETE HEADWALL ON THE SOUTH SIDE OF ROUTE 108, STAMPED OLNEY
 JV4260'AZIMUTH MARK.
 JV4260
 JV4260                          STATION RECOVERY (1995)
 JV4260
 JV4260'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4260'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4261 ***********************************************************************
 JV4261  DESIGNATION -  17173
 JV4261  PID         -  JV4261
 JV4261  STATE/COUNTY-  MD/MONTGOMERY
 JV4261  COUNTRY     -  US
 JV4261  USGS QUAD   -  SANDY SPRING (2016)
 JV4261
 JV4261                         *CURRENT SURVEY CONTROL
 JV4261  ______________________________________________________________________
 JV4261* NAD 83(1991) POSITION- 39 09 56.13144(N) 077 05 02.50855(W)   ADJUSTED
 JV4261* NAVD 88 ORTHO HEIGHT -   151.9   (meters)      498.    (feet) VERTCON3
 JV4261  ______________________________________________________________________
 JV4261  GEOID HEIGHT    -        -31.795 (meters)                     GEOID18
 JV4261  LAPLACE CORR    -         -2.29  (seconds)                    DEFLEC18
 JV4261  HORZ ORDER      -  SECOND
 JV4261
 JV4261.The horizontal coordinates were established by classical geodetic methods
 JV4261.and adjusted by the National Geodetic Survey in January 1992.
 JV4261
 JV4261.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4261.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4261
 JV4261.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4261.GEOID18 height accuracy estimate available here.
 JV4261
 JV4261.Click photographs - Photos may exist for this station.
 JV4261
 JV4261.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4261
 JV4261. The following values were computed from the NAD 83(1991) position.
 JV4261
 JV4261;                    North         East     Units Scale Factor Converg.
 JV4261;SPC MD       -   166,392.299   392,738.040   MT  0.99996260   -0 03 09.9
 JV4261;SPC MD       -   545,905.40  1,288,508.05   sFT  0.99996260   -0 03 09.9
 JV4261;UTM  18      - 4,337,221.294   319,953.444   MT  0.99999916   -1 18 59.6
 JV4261
 JV4261!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4261!SPC MD       -   0.99998116  x   0.99996260  =   0.99994376
 JV4261!UTM  18      -   0.99998116  x   0.99999916  =   0.99998032
 JV4261
 JV4261:                Primary Azimuth Mark                     Grid Az
 JV4261:SPC MD       -  OLNEY                                    143 10 29.3
 JV4261:UTM  18      -  OLNEY                                    144 26 19.0
 JV4261
 JV4261_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1995337221(NAD 83)
 JV4261
 JV4261|---------------------------------------------------------------------|
 JV4261| PID    Reference Object                     Distance      Geod. Az  |
 JV4261|                                                           dddmmss.s |
 JV4261| JV4248 OLNEY WSSC TANK                     APPROX. 2.6 KM 1400130.0 |
 JV4261| JV4247 OLNEY                               APPROX. 2.4 KM 1430719.4 |
 JV4261|---------------------------------------------------------------------|
 JV4261
 JV4261                          SUPERSEDED SURVEY CONTROL
 JV4261
 JV4261  NAD 83(1986)-  39 09 56.13110(N)    077 05 02.51833(W) AD(       ) 2
 JV4261  NAD 27      -  39 09 55.74517(N)    077 05 03.59234(W) AD(       ) 2
 JV4261  NGVD 29 (07/19/86)  152.1    (m)          499.     (f) VERT ANG       
 JV4261
 JV4261.Superseded values are not recommended for survey control.
 JV4261
 JV4261.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4261.See file dsdata.pdf to determine how the superseded data were derived.
 JV4261
 JV4261_MARKER: I = METAL ROD
 JV4261_SETTING: 0 = UNSPECIFIED SETTING
 JV4261
 JV4261  HISTORY     - Date     Condition        Report By
 JV4261  HISTORY     - 1969     MONUMENTED       WSSC
 JV4261  HISTORY     - 19950323 MARK NOT FOUND   USPSQD
 JV4261
 JV4261                          STATION DESCRIPTION
 JV4261
 JV4261'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4261'THE STATION IS ABOUT 1-1/2 MILES NORTHWEST OF OLNEY AND 1-3/4
 JV4261'MILES SOUTHWEST OF BROOKEVILLE.
 JV4261'
 JV4261'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 108 AND
 JV4261'BOWIE MILL ROAD, GO NORTHWEST ON ROUTE 108 FOR .25 MILES TO THE
 JV4261'STATION ON THE LEFT.
 JV4261'
 JV4261'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4261'AND IS SET FLUSH WITH GROUND.  IT IS 75 FEET NORTHWEST OF THE
 JV4261'ENTRANCE TO OLNEY MILL SUBDIVISION, 22.42 FEET NORTHWEST OF POWER
 JV4261'LINE POLE NO. TR 5441, 52.30 FEET SOUTHWEST OF THE SOUTHEAST
 JV4261'CORNER OF A STONE BUILDING, 51.27 FEET SOUTHEAST OF THE SOUTHWEST
 JV4261'CORNER OF A STONE BUILDING AND IS 22.0 FEET NORTH OF THE NORTH
 JV4261'EDGE OF ROUTE 108.
 JV4261
 JV4261                          STATION RECOVERY (1995)
 JV4261
 JV4261'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4261'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4331 ***********************************************************************
 JV4331  DESIGNATION -  17174 WSSC 1969
 JV4331  PID         -  JV4331
 JV4331  STATE/COUNTY-  MD/MONTGOMERY
 JV4331  COUNTRY     -  US
 JV4331  USGS QUAD   -  KENSINGTON (2016)
 JV4331
 JV4331                         *CURRENT SURVEY CONTROL
 JV4331  ______________________________________________________________________
 JV4331* NAD 83(1993) POSITION- 39 03 13.43249(N) 077 04 40.60326(W)   ADJUSTED
 JV4331* NAVD 88 ORTHO HEIGHT -   101.2   (meters)      332.    (feet) VERTCON3
 JV4331  ______________________________________________________________________
 JV4331  GEOID HEIGHT    -        -31.850 (meters)                     GEOID18
 JV4331  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 JV4331  HORZ ORDER      -  SECOND
 JV4331
 JV4331.The horizontal coordinates were established by classical geodetic methods
 JV4331.and adjusted by the National Geodetic Survey in November 1994.
 JV4331
 JV4331.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4331.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4331
 JV4331.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4331.GEOID18 height accuracy estimate available here.
 JV4331
 JV4331.Click photographs - Photos may exist for this station.
 JV4331
 JV4331.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4331
 JV4331. The following values were computed from the NAD 83(1993) position.
 JV4331
 JV4331;                    North         East     Units Scale Factor Converg.
 JV4331;SPC MD       -   153,973.838   393,253.291   MT  0.99995465   -0 02 56.1
 JV4331;SPC MD       -   505,162.50  1,290,198.51   sFT  0.99995465   -0 02 56.1
 JV4331;UTM  18      - 4,324,793.995   320,195.023   MT  0.99999810   -1 18 34.4
 JV4331
 JV4331!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4331!SPC MD       -   0.99998912  x   0.99995465  =   0.99994377
 JV4331!UTM  18      -   0.99998912  x   0.99999810  =   0.99998722
 JV4331
 JV4331:                Primary Azimuth Mark                     Grid Az
 JV4331:SPC MD       -  PLAZA                                    129 54 22.1
 JV4331:UTM  18      -  PLAZA                                    131 10 00.4
 JV4331
 JV4331_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2019524793(NAD 83)
 JV4331
 JV4331|---------------------------------------------------------------------|
 JV4331| PID    Reference Object                     Distance      Geod. Az  |
 JV4331|                                                           dddmmss.s |
 JV4331| JV4307 PLAZA                               APPROX. 2.5 KM 1295126.0 |
 JV4331| JV4332 17175 WSSC 1969                     346.104 METERS 30248     |
 JV4331|---------------------------------------------------------------------|
 JV4331
 JV4331                          SUPERSEDED SURVEY CONTROL
 JV4331
 JV4331  NAD 83(1991)-  39 03 13.43229(N)    077 04 40.60336(W) AD(       ) 2
 JV4331  NAD 83(1986)-  39 03 13.43194(N)    077 04 40.61347(W) AD(       ) 2
 JV4331  NAD 27      -  39 03 13.03903(N)    077 04 41.68848(W) AD(       ) 2
 JV4331  NGVD 29 (07/19/86)  101.4    (m)          333.     (f) VERT ANG       
 JV4331
 JV4331.Superseded values are not recommended for survey control.
 JV4331
 JV4331.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4331.See file dsdata.pdf to determine how the superseded data were derived.
 JV4331
 JV4331_MARKER: I = METAL ROD
 JV4331_SETTING: 0 = UNSPECIFIED SETTING
 JV4331_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4331
 JV4331  HISTORY     - Date     Condition        Report By
 JV4331  HISTORY     - 1969     MONUMENTED       WSSC
 JV4331
 JV4331                          STATION DESCRIPTION
 JV4331
 JV4331'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4331'THE STATION IS ABOUT 1-1/2 MILES NORTHWEST OF WHEATON AND 1-1/2
 JV4331'MILES WEST OF GLENMONT.
 JV4331'
 JV4331'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 586 (VIERS
 JV4331'MILL ROAD) AND RANDOLPH ROAD, GO SOUTHEAST ON ROUTE 586 FOR .4
 JV4331'MILE TO ATHERTON DRIVE AND THE STATION IS ON THE LEFT.
 JV4331'
 JV4331'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4331'AND IS 2 INCHES BELOW THE SURFACE.  IT IS IN THE GRASS STRIP
 JV4331'BETWEEN THE WESTBOUND LANE OF ROUTE 586 AND THE SERVICE DRIVE,
 JV4331'AND IS 33.50 FEET WEST OF PEPCO POLE 742274, 28.80 FEET SOUTH
 JV4331'OF THE SOUTHWEST CORNER OF A CONCRETE CATCH BASIN AND 28.56 FEET
 JV4331'SOUTH OF THE SOUTHEAST CORNER OF A CONCRETE CATCH BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4332 ***********************************************************************
 JV4332  DESIGNATION -  17175 WSSC 1969
 JV4332  PID         -  JV4332
 JV4332  STATE/COUNTY-  MD/MONTGOMERY
 JV4332  COUNTRY     -  US
 JV4332  USGS QUAD   -  KENSINGTON (2016)
 JV4332
 JV4332                         *CURRENT SURVEY CONTROL
 JV4332  ______________________________________________________________________
 JV4332* NAD 83(1993) POSITION- 39 03 19.51229(N) 077 04 52.70266(W)   ADJUSTED
 JV4332* NAVD 88 ORTHO HEIGHT -   114.5   (meters)      376.    (feet) VERTCON3
 JV4332  ______________________________________________________________________
 JV4332  GEOID HEIGHT    -        -31.843 (meters)                     GEOID18
 JV4332  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 JV4332  HORZ ORDER      -  SECOND
 JV4332
 JV4332.The horizontal coordinates were established by classical geodetic methods
 JV4332.and adjusted by the National Geodetic Survey in November 1994.
 JV4332
 JV4332.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4332.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4332
 JV4332.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4332.GEOID18 height accuracy estimate available here.
 JV4332
 JV4332.Click photographs - Photos may exist for this station.
 JV4332
 JV4332.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4332
 JV4332. The following values were computed from the NAD 83(1993) position.
 JV4332
 JV4332;                    North         East     Units Scale Factor Converg.
 JV4332;SPC MD       -   154,161.571   392,962.545   MT  0.99995475   -0 03 03.7
 JV4332;SPC MD       -   505,778.42  1,289,244.62   sFT  0.99995475   -0 03 03.7
 JV4332;UTM  18      - 4,324,988.089   319,908.466   MT  0.99999937   -1 18 42.2
 JV4332
 JV4332!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4332!SPC MD       -   0.99998703  x   0.99995475  =   0.99994179
 JV4332!UTM  18      -   0.99998703  x   0.99999937  =   0.99998640
 JV4332
 JV4332:                Primary Azimuth Mark                     Grid Az
 JV4332:SPC MD       -  WHEATON RAD STA WMDO TOWER               125 37 11.8
 JV4332:UTM  18      -  WHEATON RAD STA WMDO TOWER               126 52 50.3
 JV4332
 JV4332_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1990824988(NAD 83)
 JV4332
 JV4332|---------------------------------------------------------------------|
 JV4332| PID    Reference Object                     Distance      Geod. Az  |
 JV4332|                                                           dddmmss.s |
 JV4332| JV4331 17174 WSSC 1969                     346.104 METERS 12248     |
 JV4332| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 2.8 KM 1253408.1 |
 JV4332|---------------------------------------------------------------------|
 JV4332
 JV4332                          SUPERSEDED SURVEY CONTROL
 JV4332
 JV4332  NAD 83(1991)-  39 03 19.51210(N)    077 04 52.70277(W) AD(       ) 2
 JV4332  NAD 83(1986)-  39 03 19.51179(N)    077 04 52.71296(W) AD(       ) 2
 JV4332  NAD 27      -  39 03 19.11897(N)    077 04 53.78770(W) AD(       ) 2
 JV4332  NGVD 29 (07/19/86)  114.7    (m)          376.     (f) VERT ANG       
 JV4332
 JV4332.Superseded values are not recommended for survey control.
 JV4332
 JV4332.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4332.See file dsdata.pdf to determine how the superseded data were derived.
 JV4332
 JV4332_MARKER: I = METAL ROD
 JV4332_SETTING: 0 = UNSPECIFIED SETTING
 JV4332_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4332
 JV4332  HISTORY     - Date     Condition        Report By
 JV4332  HISTORY     - 1969     MONUMENTED       WSSC
 JV4332  HISTORY     - 20120713 MARK NOT FOUND   MDSHA
 JV4332
 JV4332                          STATION DESCRIPTION
 JV4332
 JV4332'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4332'THE STATION IS ABOUT 1-1/2 MILES NORTHWEST OF WHEATON AND 1-1/2
 JV4332'MILES WEST OF GLENMONT.
 JV4332'
 JV4332'THE STATION IS LOCATED IN THE GRASS ISLAND IN THE CENTERLINE
 JV4332'OF VIERS MILL ROAD (ROUTE 586) ABOUT 600 FEET SOUTHEAST OF
 JV4332'RANDOLPH ROAD.
 JV4332'
 JV4332'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4332'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 44.50 FEET NORTHEAST OF
 JV4332'PEPCO POLE 729905, 45.80 FEET SOUTHWEST OF THE SOUTHWEST CORNER
 JV4332'OF A CONCRETE CATCH BASIN, 47.45 FEET SOUTHWEST OF THE SOUTHEAST
 JV4332'CORNER OF A CONCRETE CATCH BASIN, AND OPPOSITE HOUSE 12132.
 JV4332
 JV4332                          STATION RECOVERY (2012)
 JV4332
 JV4332'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2012 (JMR)
 JV4332'MARK NOT FOUND
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4323 ***********************************************************************
 JV4323  DESIGNATION -  17176 WSSC 1969
 JV4323  PID         -  JV4323
 JV4323  STATE/COUNTY-  MD/MONTGOMERY
 JV4323  COUNTRY     -  US
 JV4323  USGS QUAD   -  KENSINGTON (2016)
 JV4323
 JV4323                         *CURRENT SURVEY CONTROL
 JV4323  ______________________________________________________________________
 JV4323* NAD 83(1993) POSITION- 39 02 49.59327(N) 077 02 09.89289(W)   ADJUSTED
 JV4323* NAVD 88 ORTHO HEIGHT -   132.4   (meters)      434.    (feet) VERTCON3
 JV4323  ______________________________________________________________________
 JV4323  GEOID HEIGHT    -        -31.923 (meters)                     GEOID18
 JV4323  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 JV4323  HORZ ORDER      -  SECOND
 JV4323
 JV4323.The horizontal coordinates were established by classical geodetic methods
 JV4323.and adjusted by the National Geodetic Survey in November 1994.
 JV4323
 JV4323.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4323.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4323
 JV4323.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4323.GEOID18 height accuracy estimate available here.
 JV4323
 JV4323.Click photographs - Photos may exist for this station.
 JV4323
 JV4323.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4323
 JV4323. The following values were computed from the NAD 83(1993) position.
 JV4323
 JV4323;                    North         East     Units Scale Factor Converg.
 JV4323;SPC MD       -   153,236.457   396,876.618   MT  0.99995430   -0 01 21.5
 JV4323;SPC MD       -   502,743.28  1,302,086.04   sFT  0.99995430   -0 01 21.5
 JV4323;UTM  18      - 4,323,977.058   323,801.382   MT  0.99998229   -1 16 58.7
 JV4323
 JV4323!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4323!SPC MD       -   0.99998424  x   0.99995430  =   0.99993854
 JV4323!UTM  18      -   0.99998424  x   0.99998229  =   0.99996653
 JV4323
 JV4323:                Primary Azimuth Mark                     Grid Az
 JV4323:SPC MD       -  PLAZA                                    243 08 40.2
 JV4323:UTM  18      -  PLAZA                                    244 24 17.4
 JV4323
 JV4323_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2380123977(NAD 83)
 JV4323
 JV4323|---------------------------------------------------------------------|
 JV4323| PID    Reference Object                     Distance      Geod. Az  |
 JV4323|                                                           dddmmss.s |
 JV4323| JV4306 WHEATON RAD STA WTOP CEN TOWER      APPROX. 1.0 KM 2364346.8 |
 JV4323| JV4307 PLAZA                               APPROX. 1.9 KM 2430718.7 |
 JV4323| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 1.8 KM 2462243.0 |
 JV4323|---------------------------------------------------------------------|
 JV4323
 JV4323                          SUPERSEDED SURVEY CONTROL
 JV4323
 JV4323  NAD 83(1991)-  39 02 49.59303(N)    077 02 09.89298(W) AD(       ) 2
 JV4323  NAD 83(1986)-  39 02 49.59255(N)    077 02 09.90306(W) AD(       ) 2
 JV4323  NAD 27      -  39 02 49.19913(N)    077 02 10.98279(W) AD(       ) 2
 JV4323  NGVD 29 (07/19/86)  132.6    (m)          435.     (f) VERT ANG       
 JV4323
 JV4323.Superseded values are not recommended for survey control.
 JV4323
 JV4323.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4323.See file dsdata.pdf to determine how the superseded data were derived.
 JV4323
 JV4323_MARKER: I = METAL ROD
 JV4323_SETTING: 0 = UNSPECIFIED SETTING
 JV4323_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4323
 JV4323  HISTORY     - Date     Condition        Report By
 JV4323  HISTORY     - 1969     MONUMENTED       WSSC
 JV4323
 JV4323                          STATION DESCRIPTION
 JV4323
 JV4323'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4323'THE STATION IS ABOUT 1-1/4 MILES NORTHEAST OF WHEATON AND 1 MILE
 JV4323'SOUTHEAST OF GLENMONT.
 JV4323'
 JV4323'TO REACH THE STATION FROM THE INTERSECTION OF KEMP MILL ROAD AND
 JV4323'ARCOLA AVENUE GO WEST ON ARCOLA AVENUE FOR .25 MILE TO THE
 JV4323'STATION ON THE RIGHT.
 JV4323'
 JV4323'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4323'AND IS 3 INCHES BELOW THE GROUND.  IT IS 17.14 FEET EAST OF
 JV4323'PEPCO POLE 737439, 20.93 FEET WEST OF A WATER METER, 43.28 FEET
 JV4323'SOUTHWEST OF THE SOUTHWEST CORNER OF HOUSE 1713 AND IS 49.73
 JV4323'FEET SOUTHEAST OF THE SOUTHEAST CORNER OF HOUSE 1717.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4327 ***********************************************************************
 JV4327  DESIGNATION -  17177 WSSC 1969
 JV4327  PID         -  JV4327
 JV4327  STATE/COUNTY-  MD/MONTGOMERY
 JV4327  COUNTRY     -  US
 JV4327  USGS QUAD   -  KENSINGTON (2016)
 JV4327
 JV4327                         *CURRENT SURVEY CONTROL
 JV4327  ______________________________________________________________________
 JV4327* NAD 83(1993) POSITION- 39 02 09.38845(N) 077 03 48.04233(W)   ADJUSTED
 JV4327* NAVD 88 ORTHO HEIGHT -   121.8   (meters)      400.    (feet) VERTCON3
 JV4327  ______________________________________________________________________
 JV4327  GEOID HEIGHT    -        -31.887 (meters)                     GEOID18
 JV4327  LAPLACE CORR    -         -2.92  (seconds)                    DEFLEC18
 JV4327  HORZ ORDER      -  SECOND
 JV4327
 JV4327.The horizontal coordinates were established by classical geodetic methods
 JV4327.and adjusted by the National Geodetic Survey in November 1994.
 JV4327
 JV4327.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4327.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4327
 JV4327.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4327.GEOID18 height accuracy estimate available here.
 JV4327
 JV4327.Click photographs - Photos may exist for this station.
 JV4327
 JV4327.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4327
 JV4327. The following values were computed from the NAD 83(1993) position.
 JV4327
 JV4327;                    North         East     Units Scale Factor Converg.
 JV4327;SPC MD       -   151,997.969   394,515.674   MT  0.99995374   -0 02 23.1
 JV4327;SPC MD       -   498,680.00  1,294,340.17   sFT  0.99995374   -0 02 23.1
 JV4327;UTM  18      - 4,322,790.755   321,413.690   MT  0.99999272   -1 17 59.5
 JV4327
 JV4327!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4327!SPC MD       -   0.99998590  x   0.99995374  =   0.99993964
 JV4327!UTM  18      -   0.99998590  x   0.99999272  =   0.99997862
 JV4327
 JV4327:                Primary Azimuth Mark                     Grid Az
 JV4327:SPC MD       -  PLAZA                                    060 13 18.2
 JV4327:UTM  18      -  PLAZA                                    061 28 54.6
 JV4327
 JV4327_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2141322790(NAD 83)
 JV4327
 JV4327|---------------------------------------------------------------------|
 JV4327| PID    Reference Object                     Distance      Geod. Az  |
 JV4327|                                                           dddmmss.s |
 JV4327| JV4307 PLAZA                               APPROX. 0.8 KM 0601055.1 |
 JV4327|---------------------------------------------------------------------|
 JV4327
 JV4327                          SUPERSEDED SURVEY CONTROL
 JV4327
 JV4327  NAD 83(1991)-  39 02 09.38824(N)    077 03 48.04243(W) AD(       ) 2
 JV4327  NAD 83(1986)-  39 02 09.38783(N)    077 03 48.05256(W) AD(       ) 2
 JV4327  NAD 27      -  39 02 08.99383(N)    077 03 49.12914(W) AD(       ) 2
 JV4327  NGVD 29 (07/19/86)  122.0    (m)          400.     (f) VERT ANG       
 JV4327
 JV4327.Superseded values are not recommended for survey control.
 JV4327
 JV4327.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4327.See file dsdata.pdf to determine how the superseded data were derived.
 JV4327
 JV4327_MARKER: I = METAL ROD
 JV4327_SETTING: 0 = UNSPECIFIED SETTING
 JV4327_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4327
 JV4327  HISTORY     - Date     Condition        Report By
 JV4327  HISTORY     - 1969     MONUMENTED       WSSC
 JV4327
 JV4327                          STATION DESCRIPTION
 JV4327
 JV4327'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4327'THE STATION IS ABOUT 1/2 MILE SOUTHWEST OF WHEATON AND 3/4 MILES
 JV4327'NORTHEAST OF KENSINGTON.
 JV4327'
 JV4327'TO REACH THE STATION FROM THE INTERSECTION OF UNIVERSITY
 JV4327'BOULEVARD (ROUTE 193) AND VIERS MILL ROAD (ROUTE 586), GO
 JV4327'SOUTHWEST ON UNIVERSITY BOULEVARD FOR .3 MILES TO THE STATION
 JV4327'ON THE LEFT.
 JV4327'
 JV4327'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4327'AND IS 2 INCHES BELOW THE GROUND.  IT IS 81.75 FEET SOUTHEAST OF
 JV4327'PEPCO POLE NO. 724058, 76.97 FEET SOUTHWEST OF PEPCO POLE
 JV4327'NO. 724057 AND IS 18.10 FEET SOUTHEAST OF THE SOUTHWEST CORNER
 JV4327'OF A CONCRETE SLAB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4329 ***********************************************************************
 JV4329  DESIGNATION -  17178 WSSC 1969
 JV4329  PID         -  JV4329
 JV4329  STATE/COUNTY-  MD/MONTGOMERY
 JV4329  COUNTRY     -  US
 JV4329  USGS QUAD   -  KENSINGTON (2016)
 JV4329
 JV4329                         *CURRENT SURVEY CONTROL
 JV4329  ______________________________________________________________________
 JV4329* NAD 83(1993) POSITION- 39 02 06.02689(N) 077 04 08.34506(W)   ADJUSTED
 JV4329* NAVD 88 ORTHO HEIGHT -    99.6   (meters)      327.    (feet) VERTCON3
 JV4329  ______________________________________________________________________
 JV4329  GEOID HEIGHT    -        -31.879 (meters)                     GEOID18
 JV4329  LAPLACE CORR    -         -2.92  (seconds)                    DEFLEC18
 JV4329  HORZ ORDER      -  SECOND
 JV4329
 JV4329.The horizontal coordinates were established by classical geodetic methods
 JV4329.and adjusted by the National Geodetic Survey in November 1994.
 JV4329
 JV4329.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4329.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4329
 JV4329.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4329.GEOID18 height accuracy estimate available here.
 JV4329
 JV4329.Click photographs - Photos may exist for this station.
 JV4329
 JV4329.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4329
 JV4329. The following values were computed from the NAD 83(1993) position.
 JV4329
 JV4329;                    North         East     Units Scale Factor Converg.
 JV4329;SPC MD       -   151,894.664   394,027.323   MT  0.99995370   -0 02 35.9
 JV4329;SPC MD       -   498,341.08  1,292,737.98   sFT  0.99995370   -0 02 35.9
 JV4329;UTM  18      - 4,322,698.211   320,923.166   MT  0.99999488   -1 18 12.2
 JV4329
 JV4329!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4329!SPC MD       -   0.99998938  x   0.99995370  =   0.99994308
 JV4329!UTM  18      -   0.99998938  x   0.99999488  =   0.99998426
 JV4329
 JV4329:                Primary Azimuth Mark                     Grid Az
 JV4329:SPC MD       -  17177 WSSC 1969                          078 03 21.2
 JV4329:UTM  18      -  17177 WSSC 1969                          079 18 57.5
 JV4329
 JV4329_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2092322698(NAD 83)
 JV4329
 JV4329|---------------------------------------------------------------------|
 JV4329| PID    Reference Object                     Distance      Geod. Az  |
 JV4329|                                                           dddmmss.s |
 JV4329| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 1.4 KM 0623840.5 |
 JV4329| JV4327 17177 WSSC 1969                     499.181 METERS 0780045.3 |
 JV4329|---------------------------------------------------------------------|
 JV4329
 JV4329                          SUPERSEDED SURVEY CONTROL
 JV4329
 JV4329  NAD 83(1991)-  39 02 06.02667(N)    077 04 08.34516(W) AD(       ) 2
 JV4329  NAD 83(1986)-  39 02 06.02629(N)    077 04 08.35528(W) AD(       ) 2
 JV4329  NAD 27      -  39 02 05.63224(N)    077 04 09.43123(W) AD(       ) 2
 JV4329  NGVD 29 (07/19/86)   99.8    (m)          327.     (f) VERT ANG       
 JV4329
 JV4329.Superseded values are not recommended for survey control.
 JV4329
 JV4329.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4329.See file dsdata.pdf to determine how the superseded data were derived.
 JV4329
 JV4329_MARKER: Z = SEE DESCRIPTION
 JV4329_SETTING: 0 = UNSPECIFIED SETTING
 JV4329_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4329
 JV4329  HISTORY     - Date     Condition        Report By
 JV4329  HISTORY     - 1969     MONUMENTED       WSSC
 JV4329
 JV4329                          STATION DESCRIPTION
 JV4329
 JV4329'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4329'THE STATION IS ABOUT 1 MILE SOUTHWEST OF WHEATON AND 1/2 MILE
 JV4329'NORTHEAST OF KENSINGTON.
 JV4329'
 JV4329'THE STATION IS LOCATED ON THE SOUTHEAST SIDE OF UNIVERSITY
 JV4329'BOULEVARD (ROUTE 193) AT THE INTERSECTION OF ST. PAUL STREET.
 JV4329'
 JV4329'THE STATION MARK IS A BRASS SCREW IN A CONCRETE WALK AND IS
 JV4329'47.10 FEET EAST OF PEPCO POLE 728671, 59.52 FEET NORTHEAST OF
 JV4329'THE NORTHWEST CORNER AND 47.48 FEET NORTH OF THE NORTHEAST
 JV4329'CORNER OF HOUSE 3404.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4328 ***********************************************************************
 JV4328  DESIGNATION -  17179 WSSC 1969
 JV4328  PID         -  JV4328
 JV4328  STATE/COUNTY-  MD/MONTGOMERY
 JV4328  COUNTRY     -  US
 JV4328  USGS QUAD   -  KENSINGTON (2016)
 JV4328
 JV4328                         *CURRENT SURVEY CONTROL
 JV4328  ______________________________________________________________________
 JV4328* NAD 83(1993) POSITION- 39 03 44.88856(N) 077 03 56.12907(W)   ADJUSTED
 JV4328* NAVD 88 ORTHO HEIGHT -   118.9   (meters)      390.    (feet) VERTCON3
 JV4328  ______________________________________________________________________
 JV4328  GEOID HEIGHT    -        -31.864 (meters)                     GEOID18
 JV4328  LAPLACE CORR    -         -3.29  (seconds)                    DEFLEC18
 JV4328  HORZ ORDER      -  SECOND
 JV4328
 JV4328.The horizontal coordinates were established by classical geodetic methods
 JV4328.and adjusted by the National Geodetic Survey in November 1994.
 JV4328
 JV4328.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4328.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4328
 JV4328.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4328.GEOID18 height accuracy estimate available here.
 JV4328
 JV4328.Click photographs - Photos may exist for this station.
 JV4328
 JV4328.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4328
 JV4328. The following values were computed from the NAD 83(1993) position.
 JV4328
 JV4328;                    North         East     Units Scale Factor Converg.
 JV4328;SPC MD       -   154,942.994   394,323.307   MT  0.99995514   -0 02 28.2
 JV4328;SPC MD       -   508,342.14  1,293,709.05   sFT  0.99995514   -0 02 28.2
 JV4328;UTM  18      - 4,325,739.412   321,286.148   MT  0.99999328   -1 18 07.2
 JV4328
 JV4328!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4328!SPC MD       -   0.99998635  x   0.99995514  =   0.99994149
 JV4328!UTM  18      -   0.99998635  x   0.99999328  =   0.99997963
 JV4328
 JV4328:                Primary Azimuth Mark                     Grid Az
 JV4328:SPC MD       -  PLAZA                                    161 47 42.1
 JV4328:UTM  18      -  PLAZA                                    163 03 21.1
 JV4328
 JV4328_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2128625739(NAD 83)
 JV4328
 JV4328|---------------------------------------------------------------------|
 JV4328| PID    Reference Object                     Distance      Geod. Az  |
 JV4328|                                                           dddmmss.s |
 JV4328| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 2.6 KM 1590254.6 |
 JV4328| JV4307 PLAZA                               APPROX. 2.7 KM 1614513.9 |
 JV4328|---------------------------------------------------------------------|
 JV4328
 JV4328                          SUPERSEDED SURVEY CONTROL
 JV4328
 JV4328  NAD 83(1991)-  39 03 44.88834(N)    077 03 56.12915(W) AD(       ) 2
 JV4328  NAD 83(1986)-  39 03 44.88792(N)    077 03 56.13917(W) AD(       ) 2
 JV4328  NAD 27      -  39 03 44.49541(N)    077 03 57.21542(W) AD(       ) 2
 JV4328  NGVD 29 (07/19/86)  119.1    (m)          391.     (f) VERT ANG       
 JV4328
 JV4328.Superseded values are not recommended for survey control.
 JV4328
 JV4328.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4328.See file dsdata.pdf to determine how the superseded data were derived.
 JV4328
 JV4328_MARKER: I = METAL ROD
 JV4328_SETTING: 0 = UNSPECIFIED SETTING
 JV4328_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4328
 JV4328  HISTORY     - Date     Condition        Report By
 JV4328  HISTORY     - 1969     MONUMENTED       WSSC
 JV4328
 JV4328                          STATION DESCRIPTION
 JV4328
 JV4328'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4328'THE STATION IS ABOUT 1 MILE WEST OF GLENMONT AND 1-1/2 MILE
 JV4328'SOUTHEAST OF ASPEN HILL.
 JV4328'
 JV4328'THE STATION IS LOCATED ON THE SOUTHEAST SIDE OF DALEWOOD DRIVE
 JV4328'100 FEET SOUTHWEST OF BLUEHILL ROAD AT WHEATON HIGH SCHOOL.
 JV4328'
 JV4328'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4328'AND IS 3 INCHES BELOW THE GROUND.  IT IS 68.85 FEET NORTH OF
 JV4328'PEPCO POLE 738331, 73.75 FEET EAST OF THE SOUTHEAST CORNER OF
 JV4328'HOUSE 12614.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2343 ***********************************************************************
 HV2343  DESIGNATION -  1718 WSSC
 HV2343  PID         -  HV2343
 HV2343  STATE/COUNTY-  MD/MONTGOMERY
 HV2343  COUNTRY     -  US
 HV2343  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2343
 HV2343                         *CURRENT SURVEY CONTROL
 HV2343  ______________________________________________________________________
 HV2343* NAD 83(1986) POSITION- 38 58 33.     (N) 077 00 33.     (W)   SCALED
 HV2343* NAVD 88 ORTHO HEIGHT -    87.526 (meters)      287.16  (feet) ADJUSTED
 HV2343  ______________________________________________________________________
 HV2343  GEOID HEIGHT    -        -32.010 (meters)                     GEOID18
 HV2343  DYNAMIC HEIGHT  -         87.480 (meters)      287.01  (feet) COMP
 HV2343  MODELED GRAVITY -    980,094.9   (mgal)                       NAVD 88
 HV2343
 HV2343  VERT ORDER      -  SECOND    CLASS 0
 HV2343
 HV2343.The horizontal coordinates were scaled from a map and have
 HV2343.an estimated accuracy of +/- 6 seconds.
 HV2343
 HV2343.The orthometric height was determined by differential leveling and
 HV2343.adjusted by the NATIONAL GEODETIC SURVEY
 HV2343.in June 1991.
 HV2343
 HV2343.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2343.GEOID18 height accuracy estimate available here.
 HV2343
 HV2343.Click photographs - Photos may exist for this station.
 HV2343
 HV2343.The dynamic height is computed by dividing the NAVD 88
 HV2343.geopotential number by the normal gravity value computed on the
 HV2343.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2343.degrees latitude (g = 980.6199 gals.).
 HV2343
 HV2343.The modeled gravity was interpolated from observed gravity values.
 HV2343
 HV2343;                    North         East    Units  Estimated Accuracy
 HV2343;SPC MD       -   145,320.      399,210.      MT  (+/- 180 meters Scaled)
 HV2343
 HV2343_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ259160(NAD 83)
 HV2343
 HV2343                          SUPERSEDED SURVEY CONTROL
 HV2343
 HV2343  NGVD 29 (11/26/84)   87.741  (m)          287.86   (f) ADJUSTED    2 0
 HV2343
 HV2343.Superseded values are not recommended for survey control.
 HV2343
 HV2343.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2343.See file dsdata.pdf to determine how the superseded data were derived.
 HV2343
 HV2343_MARKER: DD = SURVEY DISK
 HV2343_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2343_STAMPING: 1718
 HV2343_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2343
 HV2343  HISTORY     - Date     Condition        Report By
 HV2343  HISTORY     - UNK      MONUMENTED       WSSC
 HV2343  HISTORY     - 1951     GOOD             CGS
 HV2343
 HV2343                          STATION DESCRIPTION
 HV2343
 HV2343'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2343'AT TAKOMA PARK.
 HV2343'AT TAKOMA PARK, MONTGOMERY COUNTY, AT THE INTERSECTION OF CARROLL
 HV2343'AVENUE AND PARK AVENUE, IN THE PARKING BETWEEN THE SIDEWALK
 HV2343'AND CURB ON THE WEST SIDE OF PARK AVENUE, 69.56 FEET FROM A STONE
 HV2343'PROPERTY-CORNER MARKER LOCATED IN THE SIDEWALK AT THE POINT
 HV2343'FORMED BY THE SIDEWALK ON THE EAST SIDE OF PARK AVENUE AND THE
 HV2343'SIDEWALK ON THE NORTHWEST SIDE OF CARROLL AVENUE, 41.22
 HV2343'FEET FROM THE SOUTHEAST CORNER OF THE FRONT PORCH OF A HOUSE,
 HV2343'AND 39.29 FEET SOUTH OF THE CENTER OF A FIRE HYDRANT ON THE WEST
 HV2343'SIDE OF PARK AVENUE.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV2343'BRONZE DISK, STAMPED 1718 AND SET IN THE TOP OF AN IRON PIPE
 HV2343'ABOUT FLUSH WITH THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4509 ***********************************************************************
 JV4509  DESIGNATION -  17180 WSSC 1969
 JV4509  PID         -  JV4509
 JV4509  STATE/COUNTY-  MD/MONTGOMERY
 JV4509  COUNTRY     -  US
 JV4509  USGS QUAD   -  SENECA (2016)
 JV4509
 JV4509                         *CURRENT SURVEY CONTROL
 JV4509  ______________________________________________________________________
 JV4509* NAD 83(1993) POSITION- 39 05 25.62203(N) 077 16 03.10962(W)   ADJUSTED
 JV4509* NAVD 88 ORTHO HEIGHT -   110.3   (meters)      362.    (feet) VERTCON3
 JV4509  ______________________________________________________________________
 JV4509  GEOID HEIGHT    -        -31.756 (meters)                     GEOID18
 JV4509  LAPLACE CORR    -          2.24  (seconds)                    DEFLEC18
 JV4509  HORZ ORDER      -  SECOND
 JV4509
 JV4509.The horizontal coordinates were established by classical geodetic methods
 JV4509.and adjusted by the National Geodetic Survey in November 1994.
 JV4509
 JV4509.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4509.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4509
 JV4509.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4509.GEOID18 height accuracy estimate available here.
 JV4509
 JV4509.Click photographs - Photos may exist for this station.
 JV4509
 JV4509.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4509
 JV4509. The following values were computed from the NAD 83(1993) position.
 JV4509
 JV4509;                    North         East     Units Scale Factor Converg.
 JV4509;SPC MD       -   158,081.154   376,855.367   MT  0.99995684   -0 10 04.5
 JV4509;SPC MD       -   518,637.92  1,236,399.65   sFT  0.99995684   -0 10 04.5
 JV4509;UTM  18      - 4,329,261.671   303,890.198   MT  1.00007358   -1 25 48.9
 JV4509
 JV4509!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4509!SPC MD       -   0.99998768  x   0.99995684  =   0.99994452
 JV4509!UTM  18      -   0.99998768  x   1.00007358  =   1.00006126
 JV4509
 JV4509:                Primary Azimuth Mark                     Grid Az
 JV4509:SPC MD       -  POLO                                     186 22 34.1
 JV4509:UTM  18      -  POLO                                     187 38 18.5
 JV4509
 JV4509_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0389029261(NAD 83)
 JV4509
 JV4509|---------------------------------------------------------------------|
 JV4509| PID    Reference Object                     Distance      Geod. Az  |
 JV4509|                                                           dddmmss.s |
 JV4509| JV4506 17181 WSSC 1969                     449.384 METERS 0813902.2 |
 JV4509| JV4503 POLO                                APPROX. 1.8 KM 1861229.6 |
 JV4509|---------------------------------------------------------------------|
 JV4509
 JV4509                          SUPERSEDED SURVEY CONTROL
 JV4509
 JV4509  NAD 83(1991)-  39 05 25.62138(N)    077 16 03.11015(W) AD(       ) 2
 JV4509  NAD 83(1986)-  39 05 25.62165(N)    077 16 03.12029(W) AD(       ) 2
 JV4509  NAD 27      -  39 05 25.23247(N)    077 16 04.17514(W) AD(       ) 2
 JV4509  NGVD 29 (07/19/86)  110.5    (m)          363.     (f) VERT ANG       
 JV4509
 JV4509.Superseded values are not recommended for survey control.
 JV4509
 JV4509.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4509.See file dsdata.pdf to determine how the superseded data were derived.
 JV4509
 JV4509_MARKER: I = METAL ROD
 JV4509_SETTING: 0 = UNSPECIFIED SETTING
 JV4509_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4509
 JV4509  HISTORY     - Date     Condition        Report By
 JV4509  HISTORY     - 1969     MONUMENTED       WSSC
 JV4509
 JV4509                          STATION DESCRIPTION
 JV4509
 JV4509'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4509'THE STATION IS ABOUT 1-1/2 MILES NORTHWEST OF TRAVILAH AND 1-1/2
 JV4509'MILES SOUTHEAST OF DARNSTOWN.
 JV4509'
 JV4509'THE STATION IS LOCATED ON THE SOUTHWEST CORNER OF TURKEY FOOT
 JV4509'ROAD AND JONES LANE.
 JV4509'
 JV4509'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4509'AND PROJECTS 2 INCHES ABOVE THE SURFACE.  IT IS 73.18 FEET EAST
 JV4509'OF POWER LINE POLE 2546, 21.50 FEET NORTH OF POWER LINE POLE M-47,
 JV4509'82.81 FEET SOUTHWEST OF THE NORTHWEST CORNER OF A RED BARN, 65.36
 JV4509'FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A RED BARN AND IS
 JV4509'22.40 FEET WEST OF THE CENETERLINE OF JONES LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4506 ***********************************************************************
 JV4506  DESIGNATION -  17181 WSSC 1969
 JV4506  PID         -  JV4506
 JV4506  STATE/COUNTY-  MD/MONTGOMERY
 JV4506  COUNTRY     -  US
 JV4506  USGS QUAD   -  SENECA (2016)
 JV4506
 JV4506                         *CURRENT SURVEY CONTROL
 JV4506  ______________________________________________________________________
 JV4506* NAD 83(1993) POSITION- 39 05 27.73766(N) 077 15 44.60842(W)   ADJUSTED
 JV4506* NAVD 88 ORTHO HEIGHT -   105.3   (meters)      345.    (feet) VERTCON3
 JV4506  ______________________________________________________________________
 JV4506  GEOID HEIGHT    -        -31.751 (meters)                     GEOID18
 JV4506  LAPLACE CORR    -          2.14  (seconds)                    DEFLEC18
 JV4506  HORZ ORDER      -  SECOND
 JV4506
 JV4506.The horizontal coordinates were established by classical geodetic methods
 JV4506.and adjusted by the National Geodetic Survey in November 1994.
 JV4506
 JV4506.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4506.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4506
 JV4506.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4506.GEOID18 height accuracy estimate available here.
 JV4506
 JV4506.Click photographs - Photos may exist for this station.
 JV4506
 JV4506.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4506
 JV4506. The following values were computed from the NAD 83(1993) position.
 JV4506
 JV4506;                    North         East     Units Scale Factor Converg.
 JV4506;SPC MD       -   158,145.103   377,300.158   MT  0.99995688   -0 09 52.9
 JV4506;SPC MD       -   518,847.73  1,237,858.94   sFT  0.99995688   -0 09 52.9
 JV4506;UTM  18      - 4,329,315.812   304,336.342   MT  1.00007142   -1 25 37.2
 JV4506
 JV4506!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4506!SPC MD       -   0.99998846  x   0.99995688  =   0.99994534
 JV4506!UTM  18      -   0.99998846  x   1.00007142  =   1.00005988
 JV4506
 JV4506_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0433629315(NAD 83)
 JV4506
 JV4506                          SUPERSEDED SURVEY CONTROL
 JV4506
 JV4506  NAD 83(1991)-  39 05 27.73699(N)    077 15 44.60895(W) AD(       ) 2
 JV4506  NAD 83(1986)-  39 05 27.73727(N)    077 15 44.61909(W) AD(       ) 2
 JV4506  NAD 27      -  39 05 27.34808(N)    077 15 45.67457(W) AD(       ) 2
 JV4506  NGVD 29 (07/19/86)  105.5    (m)          346.     (f) VERT ANG       
 JV4506
 JV4506.Superseded values are not recommended for survey control.
 JV4506
 JV4506.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4506.See file dsdata.pdf to determine how the superseded data were derived.
 JV4506
 JV4506_MARKER: I = METAL ROD
 JV4506_SETTING: 0 = UNSPECIFIED SETTING
 JV4506_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4506
 JV4506  HISTORY     - Date     Condition        Report By
 JV4506  HISTORY     - 1969     MONUMENTED       WSSC
 JV4506
 JV4506                          STATION DESCRIPTION
 JV4506
 JV4506'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4506'THE STATION IS ABOUT 1-1/2 MILES NORTHWEST OF TRAVILAH AND 1-1/2
 JV4506'MILES SOUTHEAST OF DARNSTOWN.
 JV4506'
 JV4506'TO REACH THE STATION FROM THE INTERSECTION OF JONES LANE AND
 JV4506'TURKEY FOOT ROAD, GO NORTH ON JONES LANE FOR .05 MILE TO A DUAL
 JV4506'DRIVE ON THE RIGHT.  GO EAST ON THE SOUTH DRIVE FOR .3 MILE TO
 JV4506'AN INTERSECTION OF WIRE FENCES AND THE STATION IS ON THE RIGHT.
 JV4506'IT IS ABOUT 100 FEET WEST OF THE CREST OF THE HILL.
 JV4506'
 JV4506'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4506'AND IS .2 OF A FOOT BELOW THE SURFACE AND 13.12 FEET SOUTH OF
 JV4506'THE CENTERLINE OF THE ROAD AND 9.84 FEET NORTH OF THE FENCE
 JV4506'INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4564 ***********************************************************************
 JV4564  DESIGNATION -  17182 WSSC 1969
 JV4564  PID         -  JV4564
 JV4564  STATE/COUNTY-  MD/MONTGOMERY
 JV4564  COUNTRY     -  US
 JV4564  USGS QUAD   -  POOLESVILLE (2016)
 JV4564
 JV4564                         *CURRENT SURVEY CONTROL
 JV4564  ______________________________________________________________________
 JV4564* NAD 83(1993) POSITION- 39 07 47.08322(N) 077 25 26.42064(W)   ADJUSTED
 JV4564* NAVD 88 ORTHO HEIGHT -   119.0   (meters)      390.    (feet) VERTCON3
 JV4564  ______________________________________________________________________
 JV4564  GEOID HEIGHT    -        -32.120 (meters)                     GEOID18
 JV4564  LAPLACE CORR    -          5.02  (seconds)                    DEFLEC18
 JV4564  HORZ ORDER      -  SECOND
 JV4564
 JV4564.The horizontal coordinates were established by classical geodetic methods
 JV4564.and adjusted by the National Geodetic Survey in November 1994.
 JV4564
 JV4564.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4564.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4564
 JV4564.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4564.GEOID18 height accuracy estimate available here.
 JV4564
 JV4564.Click photographs - Photos may exist for this station.
 JV4564
 JV4564.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4564
 JV4564. The following values were computed from the NAD 83(1993) position.
 JV4564
 JV4564;                    North         East     Units Scale Factor Converg.
 JV4564;SPC MD       -   162,494.609   363,338.694   MT  0.99995964   -0 15 58.0
 JV4564;SPC MD       -   533,117.73  1,192,053.70   sFT  0.99995964   -0 15 58.0
 JV4564;UTM  18      - 4,333,972.739   290,472.117   MT  1.00014060   -1 31 49.1
 JV4564
 JV4564!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4564!SPC MD       -   0.99998637  x   0.99995964  =   0.99994601
 JV4564!UTM  18      -   0.99998637  x   1.00014060  =   1.00012697
 JV4564
 JV4564:                Primary Azimuth Mark                     Grid Az
 JV4564:SPC MD       -  POOLESVILLE 2                            023 15 03.0
 JV4564:UTM  18      -  POOLESVILLE 2                            024 30 54.1
 JV4564
 JV4564_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9047233972(NAD 83)
 JV4564
 JV4564|---------------------------------------------------------------------|
 JV4564| PID    Reference Object                     Distance      Geod. Az  |
 JV4564|                                                           dddmmss.s |
 JV4564| JV4543 POOLESVILLE 2                       APPROX. 1.0 KM 0225905.0 |
 JV4564| JV4565 17183 WSSC 1969                     315.237 METERS 18320     |
 JV4564|---------------------------------------------------------------------|
 JV4564
 JV4564                          SUPERSEDED SURVEY CONTROL
 JV4564
 JV4564  NAD 83(1991)-  39 07 47.08349(N)    077 25 26.42133(W) AD(       ) 2
 JV4564  NAD 83(1986)-  39 07 47.08278(N)    077 25 26.43098(W) AD(       ) 2
 JV4564  NAD 27      -  39 07 46.69868(N)    077 25 27.46811(W) AD(       ) 2
 JV4564  NGVD 29 (07/19/86)  119.2    (m)          391.     (f) VERT ANG       
 JV4564
 JV4564.Superseded values are not recommended for survey control.
 JV4564
 JV4564.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4564.See file dsdata.pdf to determine how the superseded data were derived.
 JV4564
 JV4564_MARKER: I = METAL ROD
 JV4564_SETTING: 0 = UNSPECIFIED SETTING
 JV4564_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4564
 JV4564  HISTORY     - Date     Condition        Report By
 JV4564  HISTORY     - 1969     MONUMENTED       WSSC
 JV4564
 JV4564                          STATION DESCRIPTION
 JV4564
 JV4564'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4564'THE STATION IS ABOUT 1-1/4 MILES SOUTHWEST OF POOLESVILLE, 3-1/4
 JV4564'SOUTHEAST OF ELMER.
 JV4564'
 JV4564'TO REACH THE STATION FROM THE INTERSECTION OF WILLARD ROAD AND
 JV4564'WESTERLY ROAD, GO SOUTH ON WILLARD ROAD FOR .7 MILE TO THE
 JV4564'STATION ON THE RIGHT.
 JV4564'
 JV4564'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4564'THAT IS FLUSH WITH THE SURFACE.  IT IS 36.03 FEET WEST OF POWER
 JV4564'LINE POLE 33, 25.94 FEET NORTHWEST OF A POWER LINE POLE, 47.60
 JV4564'FEET NORTHWEST OF A 48-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4565 ***********************************************************************
 JV4565  DESIGNATION -  17183 WSSC 1969
 JV4565  PID         -  JV4565
 JV4565  STATE/COUNTY-  MD/MONTGOMERY
 JV4565  COUNTRY     -  US
 JV4565  USGS QUAD   -  POOLESVILLE (2016)
 JV4565
 JV4565                         *CURRENT SURVEY CONTROL
 JV4565  ______________________________________________________________________
 JV4565* NAD 83(1993) POSITION- 39 07 36.87827(N) 077 25 27.18369(W)   ADJUSTED
 JV4565* NAVD 88 ORTHO HEIGHT -   109.8   (meters)      360.    (feet) VERTCON3
 JV4565  ______________________________________________________________________
 JV4565  GEOID HEIGHT    -        -32.116 (meters)                     GEOID18
 JV4565  LAPLACE CORR    -          4.96  (seconds)                    DEFLEC18
 JV4565  HORZ ORDER      -  SECOND
 JV4565
 JV4565.The horizontal coordinates were established by classical geodetic methods
 JV4565.and adjusted by the National Geodetic Survey in November 1994.
 JV4565
 JV4565.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4565.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4565
 JV4565.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4565.GEOID18 height accuracy estimate available here.
 JV4565
 JV4565.Click photographs - Photos may exist for this station.
 JV4565
 JV4565.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4565
 JV4565. The following values were computed from the NAD 83(1993) position.
 JV4565
 JV4565;                    North         East     Units Scale Factor Converg.
 JV4565;SPC MD       -   162,180.007   363,318.905   MT  0.99995942   -0 15 58.5
 JV4565;SPC MD       -   532,085.57  1,191,988.77   sFT  0.99995942   -0 15 58.5
 JV4565;UTM  18      - 4,333,658.593   290,445.387   MT  1.00014074   -1 31 49.2
 JV4565
 JV4565!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4565!SPC MD       -   0.99998781  x   0.99995942  =   0.99994723
 JV4565!UTM  18      -   0.99998781  x   1.00014074  =   1.00012855
 JV4565
 JV4565_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9044533658(NAD 83)
 JV4565
 JV4565                          SUPERSEDED SURVEY CONTROL
 JV4565
 JV4565  NAD 83(1991)-  39 07 36.87855(N)    077 25 27.18443(W) AD(       ) 2
 JV4565  NAD 83(1986)-  39 07 36.87783(N)    077 25 27.19403(W) AD(       ) 2
 JV4565  NAD 27      -  39 07 36.49359(N)    077 25 28.23124(W) AD(       ) 2
 JV4565  NGVD 29 (07/19/86)  110.0    (m)          361.     (f) VERT ANG       
 JV4565
 JV4565.Superseded values are not recommended for survey control.
 JV4565
 JV4565.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4565.See file dsdata.pdf to determine how the superseded data were derived.
 JV4565
 JV4565_MARKER: I = METAL ROD
 JV4565_SETTING: 0 = UNSPECIFIED SETTING
 JV4565_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4565_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4565+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2003
 JV4565
 JV4565  HISTORY     - Date     Condition        Report By
 JV4565  HISTORY     - 1969     MONUMENTED       WSSC
 JV4565  HISTORY     - 20030605 GOOD             DEWDAV
 JV4565
 JV4565                          STATION DESCRIPTION
 JV4565
 JV4565'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4565'THE STATION IS ABOUT 1-1/4 MILES SOUTHWEST OF POOLESVILLE,
 JV4565'3-1/4 MILES SOUTHEAST OF ELMER.
 JV4565'
 JV4565'TO REACH THE STATION FROMTHE INTERSECTION OF WILLARD ROAD
 JV4565'AND WESTERLY ROAD GO SOUTH ON WILLARD ROAD FOR .9 MILE TO THE
 JV4565'ENTRANCE OF THE RIVER ROAD COUNTRY CLUB AND THE STATION IS
 JV4565'ON THE LEFT.
 JV4565'
 JV4565'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4565'THAT IS 3 INCHES BELOW THE SURFACE.  IT IS 64.95 FEET EAST OF
 JV4565'A POWER LINE POLE, 23.32 FEET NORTHEAST OF POWER LINE POLE
 JV4565'12789, 7.74 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A BRICK
 JV4565'POST.
 JV4565
 JV4565                          STATION RECOVERY (2003)
 JV4565
 JV4565'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (CSW)
 JV4565'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4563 ***********************************************************************
 JV4563  DESIGNATION -  17184 WSSC 1969
 JV4563  PID         -  JV4563
 JV4563  STATE/COUNTY-  MD/MONTGOMERY
 JV4563  COUNTRY     -  US
 JV4563  USGS QUAD   -  POOLESVILLE (2016)
 JV4563
 JV4563                         *CURRENT SURVEY CONTROL
 JV4563  ______________________________________________________________________
 JV4563* NAD 83(1993) POSITION- 39 08 38.94822(N) 077 25 02.93238(W)   ADJUSTED
 JV4563* NAVD 88 ORTHO HEIGHT -   125.2   (meters)      411.    (feet) VERTCON3
 JV4563  ______________________________________________________________________
 JV4563  GEOID HEIGHT    -        -32.123 (meters)                     GEOID18
 JV4563  LAPLACE CORR    -          5.24  (seconds)                    DEFLEC18
 JV4563  HORZ ORDER      -  SECOND
 JV4563
 JV4563.The horizontal coordinates were established by classical geodetic methods
 JV4563.and adjusted by the National Geodetic Survey in November 1994.
 JV4563
 JV4563.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4563.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4563
 JV4563.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4563.GEOID18 height accuracy estimate available here.
 JV4563
 JV4563.Click photographs - Photos may exist for this station.
 JV4563
 JV4563.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4563
 JV4563. The following values were computed from the NAD 83(1993) position.
 JV4563
 JV4563;                    North         East     Units Scale Factor Converg.
 JV4563;SPC MD       -   164,091.360   363,910.142   MT  0.99996079   -0 15 43.3
 JV4563;SPC MD       -   538,356.40  1,193,928.52   sFT  0.99996079   -0 15 43.3
 JV4563;UTM  18      - 4,335,556.775   291,078.767   MT  1.00013747   -1 31 35.9
 JV4563
 JV4563!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4563!SPC MD       -   0.99998540  x   0.99996079  =   0.99994619
 JV4563!UTM  18      -   0.99998540  x   1.00013747  =   1.00012287
 JV4563
 JV4563:                Primary Azimuth Mark                     Grid Az
 JV4563:SPC MD       -  POOLESVILLE 2                            194 49 02.7
 JV4563:UTM  18      -  POOLESVILLE 2                            196 04 55.3
 JV4563
 JV4563_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9107835556(NAD 83)
 JV4563
 JV4563|---------------------------------------------------------------------|
 JV4563| PID    Reference Object                     Distance      Geod. Az  |
 JV4563|                                                           dddmmss.s |
 JV4563| JV4560 17185 WSSC 1969                     APPROX. 0.6 KM 0163851.7 |
 JV4563| JV4543 POOLESVILLE 2                       APPROX. 0.7 KM 1943319.4 |
 JV4563|---------------------------------------------------------------------|
 JV4563
 JV4563                          SUPERSEDED SURVEY CONTROL
 JV4563
 JV4563  NAD 83(1991)-  39 08 38.94844(N)    077 25 02.93288(W) AD(       ) 2
 JV4563  NAD 83(1986)-  39 08 38.94779(N)    077 25 02.94273(W) AD(       ) 2
 JV4563  NAD 27      -  39 08 38.56433(N)    077 25 03.98014(W) AD(       ) 2
 JV4563  NGVD 29 (07/19/86)  125.4    (m)          411.     (f) VERT ANG       
 JV4563
 JV4563.Superseded values are not recommended for survey control.
 JV4563
 JV4563.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4563.See file dsdata.pdf to determine how the superseded data were derived.
 JV4563
 JV4563_MARKER: I = METAL ROD
 JV4563_SETTING: 0 = UNSPECIFIED SETTING
 JV4563_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4563
 JV4563  HISTORY     - Date     Condition        Report By
 JV4563  HISTORY     - 1969     MONUMENTED       WSSC
 JV4563
 JV4563                          STATION DESCRIPTION
 JV4563
 JV4563'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4563'*THE STATION IS ABOUT 2-1/2 MILES SOUTH OF BEALLSVILLE, 3-1/2
 JV4563'MILES SOUTHEAST OF MARTINSBURG IN THE TOWN OF POOLESVILLE.
 JV4563'
 JV4563'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 107 AND
 JV4563'ELGIN DRIVE, GO SOUTH ON ELGIN DRIVE FOR .1 MILE TO WOTTON
 JV4563'DRIVE AND THE STATION IS ON THE SOUTH SIDE OF WOTTON DIRVE.
 JV4563'
 JV4563'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4563'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 93.13 FEET
 JV4563'WEST OF POWER LINE POLE NO. 5, 19.10 FEET EAST OF POWER LINE
 JV4563'POLE NO. 4, AND 47.74 FEET SOUTHEAST OF A 48-INCH ASH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4560 ***********************************************************************
 JV4560  DESIGNATION -  17185 WSSC 1969
 JV4560  PID         -  JV4560
 JV4560  STATE/COUNTY-  MD/MONTGOMERY
 JV4560  COUNTRY     -  US
 JV4560  USGS QUAD   -  POOLESVILLE (2016)
 JV4560
 JV4560                         *CURRENT SURVEY CONTROL
 JV4560  ______________________________________________________________________
 JV4560* NAD 83(1993) POSITION- 39 08 56.36007(N) 077 24 56.24581(W)   ADJUSTED
 JV4560* NAVD 88 ORTHO HEIGHT -   124.3   (meters)      408.    (feet) VERTCON3
 JV4560  ______________________________________________________________________
 JV4560  GEOID HEIGHT    -        -32.124 (meters)                     GEOID18
 JV4560  LAPLACE CORR    -          5.35  (seconds)                    DEFLEC18
 JV4560  HORZ ORDER      -  SECOND
 JV4560
 JV4560.The horizontal coordinates were established by classical geodetic methods
 JV4560.and adjusted by the National Geodetic Survey in November 1994.
 JV4560
 JV4560.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4560.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4560
 JV4560.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4560.GEOID18 height accuracy estimate available here.
 JV4560
 JV4560.Click photographs - Photos may exist for this station.
 JV4560
 JV4560.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4560
 JV4560. The following values were computed from the NAD 83(1993) position.
 JV4560
 JV4560;                    North         East     Units Scale Factor Converg.
 JV4560;SPC MD       -   164,627.555   364,073.150   MT  0.99996118   -0 15 39.1
 JV4560;SPC MD       -   540,115.57  1,194,463.33   sFT  0.99996118   -0 15 39.1
 JV4560;UTM  18      - 4,336,089.335   291,253.601   MT  1.00013657   -1 31 32.3
 JV4560
 JV4560!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4560!SPC MD       -   0.99998554  x   0.99996118  =   0.99994672
 JV4560!UTM  18      -   0.99998554  x   1.00013657  =   1.00012211
 JV4560
 JV4560_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9125336089(NAD 83)
 JV4560
 JV4560                          SUPERSEDED SURVEY CONTROL
 JV4560
 JV4560  NAD 83(1991)-  39 08 56.36027(N)    077 24 56.24625(W) AD(       ) 2
 JV4560  NAD 83(1986)-  39 08 56.35963(N)    077 24 56.25616(W) AD(       ) 2
 JV4560  NAD 27      -  39 08 55.97640(N)    077 24 57.29363(W) AD(       ) 2
 JV4560  NGVD 29 (07/19/86)  124.5    (m)          408.     (f) VERT ANG       
 JV4560
 JV4560.Superseded values are not recommended for survey control.
 JV4560
 JV4560.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4560.See file dsdata.pdf to determine how the superseded data were derived.
 JV4560
 JV4560_MARKER: I = METAL ROD
 JV4560_SETTING: 0 = UNSPECIFIED SETTING
 JV4560_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4560
 JV4560  HISTORY     - Date     Condition        Report By
 JV4560  HISTORY     - 1969     MONUMENTED       WSSC
 JV4560
 JV4560                          STATION DESCRIPTION
 JV4560
 JV4560'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4560'THE STATION IS ABOUT 1/4 MILE NORTH OF POOLESVILLE, 3-1/2 MILES
 JV4560'EAST OF MARTINSBURG.
 JV4560'
 JV4560'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 107 AND
 JV4560'ROUTE 109, GO NORTH ON ROUTE 109 FOR .25 MILE TO STATION ON
 JV4560'THE RIGHT.
 JV4560'
 JV4560'THE STATION MARK IS CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4560'THAT IS 3 INCHES BELOW THE SURFACE.  IT IS 42.56 FEET EAST OF
 JV4560'A POWER LINE POLE, 9.00 FEET SOUTHWEST OF THE
 JV4560'NORTHWEST CORNER OF A BRICK POST, 39.24 WEST OF THE NORTHWEST
 JV4560'CORNER OF A PORCH, 59.45 FEET NORTH WEST OF THE SOUTHWEST CORNER
 JV4560'OF A PORCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4552 ***********************************************************************
 JV4552  DESIGNATION -  17186 WSSC 1969
 JV4552  PID         -  JV4552
 JV4552  STATE/COUNTY-  MD/MONTGOMERY
 JV4552  COUNTRY     -  US
 JV4552  USGS QUAD   -  POOLESVILLE (2016)
 JV4552
 JV4552                         *CURRENT SURVEY CONTROL
 JV4552  ______________________________________________________________________
 JV4552* NAD 83(1993) POSITION- 39 09 01.90681(N) 077 23 46.09757(W)   ADJUSTED
 JV4552* NAVD 88 ORTHO HEIGHT -   114.2   (meters)      375.    (feet) VERTCON3
 JV4552  ______________________________________________________________________
 JV4552  GEOID HEIGHT    -        -32.075 (meters)                     GEOID18
 JV4552  LAPLACE CORR    -          4.86  (seconds)                    DEFLEC18
 JV4552  HORZ ORDER      -  SECOND
 JV4552
 JV4552.The horizontal coordinates were established by classical geodetic methods
 JV4552.and adjusted by the National Geodetic Survey in November 1994.
 JV4552
 JV4552.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4552.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4552
 JV4552.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4552.GEOID18 height accuracy estimate available here.
 JV4552
 JV4552.Click photographs - Photos may exist for this station.
 JV4552
 JV4552.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4552
 JV4552. The following values were computed from the NAD 83(1993) position.
 JV4552
 JV4552;                    North         East     Units Scale Factor Converg.
 JV4552;SPC MD       -   164,791.110   365,758.233   MT  0.99996131   -0 14 55.1
 JV4552;SPC MD       -   540,652.17  1,199,991.80   sFT  0.99996131   -0 14 55.1
 JV4552;UTM  18      - 4,336,215.679   292,942.173   MT  1.00012792   -1 30 48.1
 JV4552
 JV4552!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4552!SPC MD       -   0.99998712  x   0.99996131  =   0.99994843
 JV4552!UTM  18      -   0.99998712  x   1.00012792  =   1.00011504
 JV4552
 JV4552:                Primary Azimuth Mark                     Grid Az
 JV4552:SPC MD       -  POOLESVILLE 2                            235 32 55.2
 JV4552:UTM  18      -  POOLESVILLE 2                            236 48 48.2
 JV4552
 JV4552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9294236215(NAD 83)
 JV4552
 JV4552|---------------------------------------------------------------------|
 JV4552| PID    Reference Object                     Distance      Geod. Az  |
 JV4552|                                                           dddmmss.s |
 JV4552| JV4543 POOLESVILLE 2                       APPROX. 2.5 KM 2351800.1 |
 JV4552| JV4555 17187 WSSC 1969                     373.664 METERS 26231     |
 JV4552|---------------------------------------------------------------------|
 JV4552
 JV4552                          SUPERSEDED SURVEY CONTROL
 JV4552
 JV4552  NAD 83(1991)-  39 09 01.90685(N)    077 23 46.09799(W) AD(       ) 2
 JV4552  NAD 83(1986)-  39 09 01.90637(N)    077 23 46.10793(W) AD(       ) 2
 JV4552  NAD 27      -  39 09 01.52286(N)    077 23 47.14758(W) AD(       ) 2
 JV4552  NGVD 29 (07/19/86)  114.4    (m)          375.     (f) VERT ANG       
 JV4552
 JV4552.Superseded values are not recommended for survey control.
 JV4552
 JV4552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4552.See file dsdata.pdf to determine how the superseded data were derived.
 JV4552
 JV4552_MARKER: I = METAL ROD
 JV4552_SETTING: 0 = UNSPECIFIED SETTING
 JV4552_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4552
 JV4552  HISTORY     - Date     Condition        Report By
 JV4552  HISTORY     - 1969     MONUMENTED       WSSC
 JV4552
 JV4552                          STATION DESCRIPTION
 JV4552
 JV4552'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4552'THE STATION IS ABOUT 1-1/4 MILES NORTHEAST OF POOLESVILLE,
 JV4552'2-1/4 MILES SOUTHEAST OF BEALLSVILLE.
 JV4552'
 JV4552'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 107 AND
 JV4552'ROUTE 109, GO EAST ON ROUTE 107 FOR .5 MILE TO A SIDE ROAD
 JV4552'ON THE LEFT (CATTAIL ROAD), TURN LEFT AND GO 1 MILE TO THE
 JV4552'STATION ON THE LEFT.
 JV4552'
 JV4552'THE STAITON MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4552'CENTER.  IT IS 49.93 FEET NORTHWEST OF POWER LINE POLE 60,
 JV4552'25.20 FEET SOUTHEAST OF A 24-INCH CHERRY TREE, 35.13 FEET
 JV4552'SOUTHWEST OF A 8-INCH ASH, 29.80 FEET NORTH OF A NAIL IN A
 JV4552'FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4555 ***********************************************************************
 JV4555  DESIGNATION -  17187 WSSC 1969
 JV4555  PID         -  JV4555
 JV4555  STATE/COUNTY-  MD/MONTGOMERY
 JV4555  COUNTRY     -  US
 JV4555  USGS QUAD   -  POOLESVILLE (2016)
 JV4555
 JV4555                         *CURRENT SURVEY CONTROL
 JV4555  ______________________________________________________________________
 JV4555* NAD 83(1993) POSITION- 39 09 00.32743(N) 077 24 01.52642(W)   ADJUSTED
 JV4555* NAVD 88 ORTHO HEIGHT -   111.3   (meters)      365.    (feet) VERTCON3
 JV4555  ______________________________________________________________________
 JV4555  GEOID HEIGHT    -        -32.086 (meters)                     GEOID18
 JV4555  LAPLACE CORR    -          4.93  (seconds)                    DEFLEC18
 JV4555  HORZ ORDER      -  SECOND
 JV4555
 JV4555.The horizontal coordinates were established by classical geodetic methods
 JV4555.and adjusted by the National Geodetic Survey in November 1994.
 JV4555
 JV4555.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4555.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4555
 JV4555.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4555.GEOID18 height accuracy estimate available here.
 JV4555
 JV4555.Click photographs - Photos may exist for this station.
 JV4555
 JV4555.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4555
 JV4555. The following values were computed from the NAD 83(1993) position.
 JV4555
 JV4555;                    North         East     Units Scale Factor Converg.
 JV4555;SPC MD       -   164,744.023   365,387.563   MT  0.99996128   -0 15 04.8
 JV4555;SPC MD       -   540,497.68  1,198,775.70   sFT  0.99996128   -0 15 04.8
 JV4555;UTM  18      - 4,336,176.778   292,570.491   MT  1.00012982   -1 30 57.8
 JV4555
 JV4555!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4555!SPC MD       -   0.99998757  x   0.99996128  =   0.99994885
 JV4555!UTM  18      -   0.99998757  x   1.00012982  =   1.00011739
 JV4555
 JV4555_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9257036176(NAD 83)
 JV4555
 JV4555                          SUPERSEDED SURVEY CONTROL
 JV4555
 JV4555  NAD 83(1991)-  39 09 00.32750(N)    077 24 01.52684(W) AD(       ) 2
 JV4555  NAD 83(1986)-  39 09 00.32699(N)    077 24 01.53678(W) AD(       ) 2
 JV4555  NAD 27      -  39 08 59.94354(N)    077 24 02.57595(W) AD(       ) 2
 JV4555  NGVD 29 (07/19/86)  111.5    (m)          366.     (f) VERT ANG       
 JV4555
 JV4555.Superseded values are not recommended for survey control.
 JV4555
 JV4555.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4555.See file dsdata.pdf to determine how the superseded data were derived.
 JV4555
 JV4555_MARKER: I = METAL ROD
 JV4555_SETTING: 0 = UNSPECIFIED SETTING
 JV4555_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4555
 JV4555  HISTORY     - Date     Condition        Report By
 JV4555  HISTORY     - 1969     MONUMENTED       WSSC
 JV4555
 JV4555                          STATION DESCRIPTION
 JV4555
 JV4555'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4555'THE STATION IS ABOUT 1-1/4 MILES NORTHEAST OF POOLESVILLE, 2-1/4
 JV4555'MILES SOUTHEAST OF BEALLSVILLE.
 JV4555'
 JV4555'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 107 AND
 JV4555'ROUTE 109, GO EAST ON ROUTE 107 FOR .5 MILE TO A SIDE ROAD ON
 JV4555'THE LEFT (CATTAIL ROAD).  TURN LEFT AND GO .8 MILE TO THE
 JV4555'STATION ON THE RIGHT.
 JV4555'
 JV4555'THE STATION MARK IS A CONCRETE MONUMENT WITH A IRON ROD CENTER
 JV4555'THAT IS 3 INCHES BELOW THE SURFACE.  IT IS 11.99 FEET NORTH OF
 JV4555'POWER LINE POLE 570, 5.99 FEET SOUTHWEST OF A NAIL IN A FENCE
 JV4555'POST, 49.53 FEET SOUTHEAST OF A NAIL IN A FENCE POST, 82.33
 JV4555'FEET SOUTHEAST OF A NAIL IN A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4556 ***********************************************************************
 JV4556  DESIGNATION -  17188 WSSC 1969
 JV4556  PID         -  JV4556
 JV4556  STATE/COUNTY-  MD/MONTGOMERY
 JV4556  COUNTRY     -  US
 JV4556  USGS QUAD   -  POOLESVILLE (2016)
 JV4556
 JV4556                         *CURRENT SURVEY CONTROL
 JV4556  ______________________________________________________________________
 JV4556* NAD 83(1993) POSITION- 39 08 02.56253(N) 077 24 09.01145(W)   ADJUSTED
 JV4556* NAVD 88 ORTHO HEIGHT -   106.3   (meters)      349.    (feet) VERTCON3
 JV4556  ______________________________________________________________________
 JV4556  GEOID HEIGHT    -        -32.072 (meters)                     GEOID18
 JV4556  LAPLACE CORR    -          4.73  (seconds)                    DEFLEC18
 JV4556  HORZ ORDER      -  SECOND
 JV4556
 JV4556.The horizontal coordinates were established by classical geodetic methods
 JV4556.and adjusted by the National Geodetic Survey in November 1994.
 JV4556
 JV4556.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4556.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4556
 JV4556.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4556.GEOID18 height accuracy estimate available here.
 JV4556
 JV4556.Click photographs - Photos may exist for this station.
 JV4556
 JV4556.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4556
 JV4556. The following values were computed from the NAD 83(1993) position.
 JV4556
 JV4556;                    North         East     Units Scale Factor Converg.
 JV4556;SPC MD       -   162,963.525   365,199.987   MT  0.99995998   -0 15 09.4
 JV4556;SPC MD       -   534,656.16  1,198,160.29   sFT  0.99995998   -0 15 09.4
 JV4556;UTM  18      - 4,334,400.551   292,343.631   MT  1.00013098   -1 31 00.7
 JV4556
 JV4556!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4556!SPC MD       -   0.99998836  x   0.99995998  =   0.99994834
 JV4556!UTM  18      -   0.99998836  x   1.00013098  =   1.00011933
 JV4556
 JV4556:                Primary Azimuth Mark                     Grid Az
 JV4556:SPC MD       -  POOLESVILLE 2                            286 24 15.1
 JV4556:UTM  18      -  POOLESVILLE 2                            287 40 06.4
 JV4556
 JV4556_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9234334400(NAD 83)
 JV4556
 JV4556|---------------------------------------------------------------------|
 JV4556| PID    Reference Object                     Distance      Geod. Az  |
 JV4556|                                                           dddmmss.s |
 JV4556| JV4554 17189 WSSC 1969                     391.093 METERS 10829     |
 JV4556| JV4543 POOLESVILLE 2                       APPROX. 1.5 KM 2860905.7 |
 JV4556|---------------------------------------------------------------------|
 JV4556
 JV4556                          SUPERSEDED SURVEY CONTROL
 JV4556
 JV4556  NAD 83(1991)-  39 08 02.56263(N)    077 24 09.01209(W) AD(       ) 2
 JV4556  NAD 83(1986)-  39 08 02.56210(N)    077 24 09.02181(W) AD(       ) 2
 JV4556  NAD 27      -  39 08 02.17782(N)    077 24 10.06126(W) AD(       ) 2
 JV4556  NGVD 29 (07/19/86)  106.5    (m)          349.     (f) VERT ANG       
 JV4556
 JV4556.Superseded values are not recommended for survey control.
 JV4556
 JV4556.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4556.See file dsdata.pdf to determine how the superseded data were derived.
 JV4556
 JV4556_MARKER: I = METAL ROD
 JV4556_SETTING: 0 = UNSPECIFIED SETTING
 JV4556_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4556
 JV4556  HISTORY     - Date     Condition        Report By
 JV4556  HISTORY     - 1969     MONUMENTED       WSSC
 JV4556
 JV4556                          STATION DESCRIPTION
 JV4556
 JV4556'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4556'THE STATION IS ABOUT 1-1/4 MILES SOUTHEAST OF POOLESVILLE,
 JV4556'4-1/2 MILES EAST OF ELMER.
 JV4556'
 JV4556'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 107 AND
 JV4556'ROUTE 109, GO EAST ON ROUTE 107 FOR 1.2 MILES TO BUDD ROAD AND
 JV4556'THE STATION IS ON THE RIGHT.
 JV4556'
 JV4556'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4556'THAT IS 2 INCHES BELOW THE SURFACE.  IT IS 55.86 FEET SOUTHWEST
 JV4556'OF POWER LINE POLE M-21, 70.52 FEET SOUTHWEST OF A POWER LINE
 JV4556'POLE, 13.16 FEET NORTH OF A 4-INCH CEDAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4554 ***********************************************************************
 JV4554  DESIGNATION -  17189 WSSC 1969
 JV4554  PID         -  JV4554
 JV4554  STATE/COUNTY-  MD/MONTGOMERY
 JV4554  COUNTRY     -  US
 JV4554  USGS QUAD   -  POOLESVILLE (2016)
 JV4554
 JV4554                         *CURRENT SURVEY CONTROL
 JV4554  ______________________________________________________________________
 JV4554* NAD 83(1993) POSITION- 39 07 58.54317(N) 077 23 53.56731(W)   ADJUSTED
 JV4554* NAVD 88 ORTHO HEIGHT -   101.6   (meters)      333.    (feet) VERTCON3
 JV4554  ______________________________________________________________________
 JV4554  GEOID HEIGHT    -        -32.060 (meters)                     GEOID18
 JV4554  LAPLACE CORR    -          4.70  (seconds)                    DEFLEC18
 JV4554  HORZ ORDER      -  SECOND
 JV4554
 JV4554.The horizontal coordinates were established by classical geodetic methods
 JV4554.and adjusted by the National Geodetic Survey in November 1994.
 JV4554
 JV4554.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4554.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4554
 JV4554.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4554.GEOID18 height accuracy estimate available here.
 JV4554
 JV4554.Click photographs - Photos may exist for this station.
 JV4554
 JV4554.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4554
 JV4554. The following values were computed from the NAD 83(1993) position.
 JV4554
 JV4554;                    North         East     Units Scale Factor Converg.
 JV4554;SPC MD       -   162,837.954   365,570.357   MT  0.99995989   -0 14 59.8
 JV4554;SPC MD       -   534,244.19  1,199,375.41   sFT  0.99995989   -0 14 59.8
 JV4554;UTM  18      - 4,334,266.817   292,711.202   MT  1.00012911   -1 30 50.8
 JV4554
 JV4554!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4554!SPC MD       -   0.99998909  x   0.99995989  =   0.99994898
 JV4554!UTM  18      -   0.99998909  x   1.00012911  =   1.00011820
 JV4554
 JV4554_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9271134266(NAD 83)
 JV4554
 JV4554                          SUPERSEDED SURVEY CONTROL
 JV4554
 JV4554  NAD 83(1991)-  39 07 58.54323(N)    077 23 53.56797(W) AD(       ) 2
 JV4554  NAD 83(1986)-  39 07 58.54274(N)    077 23 53.57768(W) AD(       ) 2
 JV4554  NAD 27      -  39 07 58.15832(N)    077 23 54.61765(W) AD(       ) 2
 JV4554  NGVD 29 (07/19/86)  101.8    (m)          334.     (f) VERT ANG       
 JV4554
 JV4554.Superseded values are not recommended for survey control.
 JV4554
 JV4554.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4554.See file dsdata.pdf to determine how the superseded data were derived.
 JV4554
 JV4554_MARKER: I = METAL ROD
 JV4554_SETTING: 0 = UNSPECIFIED SETTING
 JV4554_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4554
 JV4554  HISTORY     - Date     Condition        Report By
 JV4554  HISTORY     - 1969     MONUMENTED       WSSC
 JV4554
 JV4554                          STATION DESCRIPTION
 JV4554
 JV4554'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4554'THE STATION IS ABOUT 1-1/4 MILE SOUTHEAST OF POOLESVILLE,
 JV4554'4-1/2 MILES EAST OF ELMER.
 JV4554'
 JV4554'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 107 AND
 JV4554'ROUTE 109, GO EAST ON ROUTE 107 FOR 1.2 MILES TO A SIDE ROAD
 JV4554'RIGHT (BUDD ROAD), CONTINUE EAST FOR .25 MILE TO STATION ON
 JV4554'THE RIGHT.
 JV4554'
 JV4554'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4554'THAT IS FLUSH WITH THE SURFACE.  IT IS 57.05 FEET SOUTHWEST OF
 JV4554'A POWER LINE POLE, 44.53 FEET SOUTHWEST OF POWER POLE 27, 64.21
 JV4554'FEET SOUTHEAST OF A NAIL IN THE TOP OF A FENCE POST, 16.5 FEET
 JV4554'SOUTH OF THE EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4333 ***********************************************************************
 JV4333  DESIGNATION -  17192 WSSC 1969
 JV4333  PID         -  JV4333
 JV4333  STATE/COUNTY-  MD/MONTGOMERY
 JV4333  COUNTRY     -  US
 JV4333  USGS QUAD   -  KENSINGTON (2016)
 JV4333
 JV4333                         *CURRENT SURVEY CONTROL
 JV4333  ______________________________________________________________________
 JV4333* NAD 83(1993) POSITION- 39 04 39.53223(N) 077 05 28.97336(W)   ADJUSTED
 JV4333* NAVD 88 ORTHO HEIGHT -   119.0   (meters)      390.    (feet) VERTCON3
 JV4333  ______________________________________________________________________
 JV4333  GEOID HEIGHT    -        -31.809 (meters)                     GEOID18
 JV4333  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 JV4333  HORZ ORDER      -  SECOND
 JV4333
 JV4333.The horizontal coordinates were established by classical geodetic methods
 JV4333.and adjusted by the National Geodetic Survey in November 1994.
 JV4333
 JV4333.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4333.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4333
 JV4333.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4333.GEOID18 height accuracy estimate available here.
 JV4333
 JV4333.Click photographs - Photos may exist for this station.
 JV4333
 JV4333.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4333
 JV4333. The following values were computed from the NAD 83(1993) position.
 JV4333
 JV4333;                    North         East     Units Scale Factor Converg.
 JV4333;SPC MD       -   156,629.939   392,092.959   MT  0.99995603   -0 03 26.5
 JV4333;SPC MD       -   513,876.72  1,286,391.65   sFT  0.99995603   -0 03 26.5
 JV4333;UTM  18      - 4,327,475.109   319,093.374   MT  1.00000299   -1 19 07.3
 JV4333
 JV4333!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4333!SPC MD       -   0.99998632  x   0.99995603  =   0.99994235
 JV4333!UTM  18      -   0.99998632  x   1.00000299  =   0.99998931
 JV4333
 JV4333:                Primary Azimuth Mark                     Grid Az
 JV4333:SPC MD       -  PAVILION                                 221 32 22.1
 JV4333:UTM  18      -  PAVILION                                 222 48 02.9
 JV4333
 JV4333_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1909327475(NAD 83)
 JV4333
 JV4333|---------------------------------------------------------------------|
 JV4333| PID    Reference Object                     Distance      Geod. Az  |
 JV4333|                                                           dddmmss.s |
 JV4333| JV4334 17193 WSSC 1969                     432.299 METERS 2191932.6 |
 JV4333| JV4316 PAVILION                            APPROX. 3.5 KM 2212855.6 |
 JV4333|---------------------------------------------------------------------|
 JV4333
 JV4333                          SUPERSEDED SURVEY CONTROL
 JV4333
 JV4333  NAD 83(1991)-  39 04 39.53195(N)    077 05 28.97400(W) AD(       ) 2
 JV4333  NAD 83(1986)-  39 04 39.53167(N)    077 05 28.98375(W) AD(       ) 2
 JV4333  NAD 27      -  39 04 39.14028(N)    077 05 30.05713(W) AD(       ) 2
 JV4333  NGVD 29 (07/19/86)  119.2    (m)          391.     (f) VERT ANG       
 JV4333
 JV4333.Superseded values are not recommended for survey control.
 JV4333
 JV4333.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4333.See file dsdata.pdf to determine how the superseded data were derived.
 JV4333
 JV4333_MARKER: I = METAL ROD
 JV4333_SETTING: 0 = UNSPECIFIED SETTING
 JV4333_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4333
 JV4333  HISTORY     - Date     Condition        Report By
 JV4333  HISTORY     - 1969     MONUMENTED       WSSC
 JV4333
 JV4333                          STATION DESCRIPTION
 JV4333
 JV4333'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4333'THE STATION IS ABOUT 1 MILE WEST OF ASPEN HILL AND 2 MILES
 JV4333'NORTHEAST OF ROCKVILLE.
 JV4333'
 JV4333'THE STATION IS LOCATED IN THE SOUTHEAST CORNER OF ASPEN
 JV4333'HILL ROAD AND JUSTICE ROAD.
 JV4333'
 JV4333'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4333'CENTER AND IS 1-INCH BELOW THE SURFACE. IT IS 46.13 FEET SOUTHEAST
 JV4333'OF PEPCO POLE NO. 739264, 15.35 FEET EAST OF PEPCO POLE NO. 724847
 JV4333'AND 39.65 FEET NORTH OF THE NORTHWEST CORNER OF HOUSE 13505.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4334 ***********************************************************************
 JV4334  DESIGNATION -  17193 WSSC 1969
 JV4334  PID         -  JV4334
 JV4334  STATE/COUNTY-  MD/MONTGOMERY
 JV4334  COUNTRY     -  US
 JV4334  USGS QUAD   -  KENSINGTON (2016)
 JV4334
 JV4334                         *CURRENT SURVEY CONTROL
 JV4334  ______________________________________________________________________
 JV4334* NAD 83(1993) POSITION- 39 04 28.68808(N) 077 05 40.37052(W)   ADJUSTED
 JV4334* NAVD 88 ORTHO HEIGHT -   110.7   (meters)      363.    (feet) VERTCON3
 JV4334  ______________________________________________________________________
 JV4334  GEOID HEIGHT    -        -31.806 (meters)                     GEOID18
 JV4334  LAPLACE CORR    -         -3.14  (seconds)                    DEFLEC18
 JV4334  HORZ ORDER      -  SECOND
 JV4334
 JV4334.The horizontal coordinates were established by classical geodetic methods
 JV4334.and adjusted by the National Geodetic Survey in November 1994.
 JV4334
 JV4334.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4334.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4334
 JV4334.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4334.GEOID18 height accuracy estimate available here.
 JV4334
 JV4334.Click photographs - Photos may exist for this station.
 JV4334
 JV4334.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4334
 JV4334. The following values were computed from the NAD 83(1993) position.
 JV4334
 JV4334;                    North         East     Units Scale Factor Converg.
 JV4334;SPC MD       -   156,295.820   391,818.676   MT  0.99995585   -0 03 33.6
 JV4334;SPC MD       -   512,780.54  1,285,491.77   sFT  0.99995585   -0 03 33.6
 JV4334;UTM  18      - 4,327,147.094   318,811.790   MT  1.00000425   -1 19 14.2
 JV4334
 JV4334!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4334!SPC MD       -   0.99998763  x   0.99995585  =   0.99994348
 JV4334!UTM  18      -   0.99998763  x   1.00000425  =   0.99999188
 JV4334
 JV4334_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1881127147(NAD 83)
 JV4334
 JV4334                          SUPERSEDED SURVEY CONTROL
 JV4334
 JV4334  NAD 83(1991)-  39 04 28.68781(N)    077 05 40.37116(W) AD(       ) 2
 JV4334  NAD 83(1986)-  39 04 28.68753(N)    077 05 40.38092(W) AD(       ) 2
 JV4334  NAD 27      -  39 04 28.29600(N)    077 05 41.45397(W) AD(       ) 2
 JV4334  NGVD 29 (07/19/86)  110.9    (m)          364.     (f) VERT ANG       
 JV4334
 JV4334.Superseded values are not recommended for survey control.
 JV4334
 JV4334.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4334.See file dsdata.pdf to determine how the superseded data were derived.
 JV4334
 JV4334_MARKER: I = METAL ROD
 JV4334_SETTING: 0 = UNSPECIFIED SETTING
 JV4334_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4334
 JV4334  HISTORY     - Date     Condition        Report By
 JV4334  HISTORY     - 1969     MONUMENTED       WSSC
 JV4334
 JV4334                          STATION DESCRIPTION
 JV4334
 JV4334'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4334'THE STATION IS ABOUT 1 MILE WEST OF ASPEN HILL AND 2 MILES
 JV4334'NORTHEAST OF ROCKVILLE.
 JV4334'
 JV4334'THE STATION IS LOCATED AT THE NORTHWEST CORNER OF ASPEN HILL
 JV4334'ROAD AND ORIENTAL STREET.
 JV4334'
 JV4334'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4334'AND IS FLUSH WITH THE GROUND.  IT IS 31.32 FEET NORTHEAST OF THE
 JV4334'NORTHEAST CORNER OF A CONCRETE CATCH BASIN, 6.22 FEET SOUTHEAST
 JV4334'OF THE CENTER OF A MANHOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4390 ***********************************************************************
 JV4390  DESIGNATION -  17194 WSSC 1969
 JV4390  PID         -  JV4390
 JV4390  STATE/COUNTY-  MD/MONTGOMERY
 JV4390  COUNTRY     -  US
 JV4390  USGS QUAD   -  ROCKVILLE (2016)
 JV4390
 JV4390                         *CURRENT SURVEY CONTROL
 JV4390  ______________________________________________________________________
 JV4390* NAD 83(1993) POSITION- 39 04 29.30985(N) 077 08 05.45161(W)   ADJUSTED
 JV4390* NAVD 88 ORTHO HEIGHT -   136.2   (meters)      447.    (feet) VERTCON3
 JV4390  ______________________________________________________________________
 JV4390  GEOID HEIGHT    -        -31.747 (meters)                     GEOID18
 JV4390  LAPLACE CORR    -         -2.34  (seconds)                    DEFLEC18
 JV4390  HORZ ORDER      -  SECOND
 JV4390
 JV4390.The horizontal coordinates were established by classical geodetic methods
 JV4390.and adjusted by the National Geodetic Survey in November 1994.
 JV4390
 JV4390.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4390.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4390
 JV4390.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4390.GEOID18 height accuracy estimate available here.
 JV4390
 JV4390.Click photographs - Photos may exist for this station.
 JV4390
 JV4390.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4390
 JV4390. The following values were computed from the NAD 83(1993) position.
 JV4390
 JV4390;                    North         East     Units Scale Factor Converg.
 JV4390;SPC MD       -   156,319.375   388,331.461   MT  0.99995586   -0 05 04.7
 JV4390;SPC MD       -   512,857.82  1,274,050.80   sFT  0.99995586   -0 05 04.7
 JV4390;UTM  18      - 4,327,247.412   315,325.743   MT  1.00001995   -1 20 45.8
 JV4390
 JV4390!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4390!SPC MD       -   0.99998362  x   0.99995586  =   0.99993948
 JV4390!UTM  18      -   0.99998362  x   1.00001995  =   1.00000357
 JV4390
 JV4390:                Primary Azimuth Mark                     Grid Az
 JV4390:SPC MD       -  PAVILION                                 148 36 29.4
 JV4390:UTM  18      -  PAVILION                                 149 52 10.5
 JV4390
 JV4390_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1532527247(NAD 83)
 JV4390
 JV4390|---------------------------------------------------------------------|
 JV4390| PID    Reference Object                     Distance      Geod. Az  |
 JV4390|                                                           dddmmss.s |
 JV4390| JV4316 PAVILION                            APPROX. 2.7 KM 1483124.7 |
 JV4390|---------------------------------------------------------------------|
 JV4390
 JV4390                          SUPERSEDED SURVEY CONTROL
 JV4390
 JV4390  NAD 83(1991)-  39 04 29.30959(N)    077 08 05.45224(W) AD(       ) 2
 JV4390  NAD 83(1986)-  39 04 29.30936(N)    077 08 05.46201(W) AD(       ) 2
 JV4390  NAD 27      -  39 04 28.91810(N)    077 08 06.53049(W) AD(       ) 2
 JV4390  NGVD 29 (07/19/86)  136.4    (m)          448.     (f) VERT ANG       
 JV4390
 JV4390.Superseded values are not recommended for survey control.
 JV4390
 JV4390.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4390.See file dsdata.pdf to determine how the superseded data were derived.
 JV4390
 JV4390_MARKER: B = BOLT
 JV4390_SETTING: 0 = UNSPECIFIED SETTING
 JV4390_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4390
 JV4390  HISTORY     - Date     Condition        Report By
 JV4390  HISTORY     - 1969     MONUMENTED       WSSC
 JV4390
 JV4390                          STATION DESCRIPTION
 JV4390
 JV4390'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4390'THE STATION IS ABOUT 3 MILES EAST OF GLEN HILLS AND 1 MILE
 JV4390'NORTH OF ROLLINS PARK.
 JV4390'
 JV4390'THE STATION IS LOCATED IN THE ROCKCREST SECTION OF
 JV4390'ROCKVILLE AND IS ON THE NORTH SIDE OF THE EDMONSTON ROAD BRIDGE
 JV4390'OVER THE B AND O RAILROAD, ABOUT 200 FEET EAST OF ROUTE 355
 JV4390'(ROCKVILLE PIKE).
 JV4390'
 JV4390'THE MARK IS A BRASS BOLT SET FLUSH IN THE CENTERLINE OF THE
 JV4390'WOODEN WALK, 32.0 FEET WEST OF THE EAST END OF THE BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4392 ***********************************************************************
 JV4392  DESIGNATION -  17195 WSSC 1969
 JV4392  PID         -  JV4392
 JV4392  STATE/COUNTY-  MD/MONTGOMERY
 JV4392  COUNTRY     -  US
 JV4392  USGS QUAD   -  ROCKVILLE (2016)
 JV4392
 JV4392                         *CURRENT SURVEY CONTROL
 JV4392  ______________________________________________________________________
 JV4392* NAD 83(1993) POSITION- 39 04 50.53567(N) 077 08 32.43841(W)   ADJUSTED
 JV4392* NAVD 88 ORTHO HEIGHT -   138.5   (meters)      454.    (feet) VERTCON3
 JV4392  ______________________________________________________________________
 JV4392  GEOID HEIGHT    -        -31.736 (meters)                     GEOID18
 JV4392  LAPLACE CORR    -         -2.14  (seconds)                    DEFLEC18
 JV4392  HORZ ORDER      -  SECOND
 JV4392
 JV4392.The horizontal coordinates were established by classical geodetic methods
 JV4392.and adjusted by the National Geodetic Survey in November 1994.
 JV4392
 JV4392.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4392.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4392
 JV4392.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4392.GEOID18 height accuracy estimate available here.
 JV4392
 JV4392.Click photographs - Photos may exist for this station.
 JV4392
 JV4392.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4392
 JV4392. The following values were computed from the NAD 83(1993) position.
 JV4392
 JV4392;                    North         East     Units Scale Factor Converg.
 JV4392;SPC MD       -   156,974.893   387,683.815   MT  0.99995622   -0 05 21.6
 JV4392;SPC MD       -   515,008.46  1,271,925.98   sFT  0.99995622   -0 05 21.6
 JV4392;UTM  18      - 4,327,917.073   314,692.644   MT  1.00002284   -1 21 03.4
 JV4392
 JV4392!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4392!SPC MD       -   0.99998325  x   0.99995622  =   0.99993947
 JV4392!UTM  18      -   0.99998325  x   1.00002284  =   1.00000609
 JV4392
 JV4392_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1469227917(NAD 83)
 JV4392
 JV4392                          SUPERSEDED SURVEY CONTROL
 JV4392
 JV4392  NAD 83(1991)-  39 04 50.53541(N)    077 08 32.43904(W) AD(       ) 2
 JV4392  NAD 83(1986)-  39 04 50.53520(N)    077 08 32.44879(W) AD(       ) 2
 JV4392  NAD 27      -  39 04 50.14429(N)    077 08 33.51635(W) AD(       ) 2
 JV4392  NGVD 29 (07/19/86)  138.7    (m)          455.     (f) VERT ANG       
 JV4392
 JV4392.Superseded values are not recommended for survey control.
 JV4392
 JV4392.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4392.See file dsdata.pdf to determine how the superseded data were derived.
 JV4392
 JV4392_MARKER: B = BOLT
 JV4392_SETTING: 0 = UNSPECIFIED SETTING
 JV4392_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4392
 JV4392  HISTORY     - Date     Condition        Report By
 JV4392  HISTORY     - 1969     MONUMENTED       WSSC
 JV4392
 JV4392                          STATION DESCRIPTION
 JV4392
 JV4392'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4392'THE STATION IS ABOUT 3 MILES EAST OF GLEN HILLS AND 1 MILE
 JV4392'NORTH OF ROLLINS PARK.
 JV4392'
 JV4392'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 355
 JV4392'(ROCKVILLE PIKE) AND ROUTE 586 (VIERS MILL ROAD), GO SOUTHEAST
 JV4392'ON ROUTE 586 FOR .25 MILES TO THE B AND O RAILROAD BRIDGE AND
 JV4392'THE STATION IS ON THE RIGHT.
 JV4392'
 JV4392'THE STATION MARK IS A BRASS BOLT SET FLUSH IN THE CONCRETE CURB
 JV4392'ON THE SOUTHWEST SIDE OF ROUTE 586 ABOUT 75 FEET SOUTHWEST
 JV4392'OF THE BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4259 ***********************************************************************
 JV4259  DESIGNATION -  17196 WSSC 1969
 JV4259  PID         -  JV4259
 JV4259  STATE/COUNTY-  MD/MONTGOMERY
 JV4259  COUNTRY     -  US
 JV4259  USGS QUAD   -  SANDY SPRING (2016)
 JV4259
 JV4259                         *CURRENT SURVEY CONTROL
 JV4259  ______________________________________________________________________
 JV4259* NAD 83(1991) POSITION- 39 11 25.55134(N) 077 03 56.82657(W)   ADJUSTED
 JV4259* NAVD 88 ORTHO HEIGHT -   144.6   (meters)      474.    (feet) VERTCON3
 JV4259  ______________________________________________________________________
 JV4259  GEOID HEIGHT    -        -31.822 (meters)                     GEOID18
 JV4259  LAPLACE CORR    -         -2.82  (seconds)                    DEFLEC18
 JV4259  HORZ ORDER      -  SECOND
 JV4259
 JV4259.The horizontal coordinates were established by classical geodetic methods
 JV4259.and adjusted by the National Geodetic Survey in January 1992.
 JV4259
 JV4259.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4259.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4259
 JV4259.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4259.GEOID18 height accuracy estimate available here.
 JV4259
 JV4259.Click photographs - Photos may exist for this station.
 JV4259
 JV4259.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4259
 JV4259. The following values were computed from the NAD 83(1991) position.
 JV4259
 JV4259;                    North         East     Units Scale Factor Converg.
 JV4259;SPC MD       -   169,148.487   394,316.776   MT  0.99996489   -0 02 28.6
 JV4259;SPC MD       -   554,947.99  1,293,687.62   sFT  0.99996489   -0 02 28.6
 JV4259;UTM  18      - 4,339,942.069   321,592.652   MT  0.99999192   -1 18 20.6
 JV4259
 JV4259!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4259!SPC MD       -   0.99998231  x   0.99996489  =   0.99994720
 JV4259!UTM  18      -   0.99998231  x   0.99999192  =   0.99997423
 JV4259
 JV4259_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2159239942(NAD 83)
 JV4259
 JV4259                          SUPERSEDED SURVEY CONTROL
 JV4259
 JV4259  NAD 83(1986)-  39 11 25.55108(N)    077 03 56.83634(W) AD(       ) 2
 JV4259  NAD 27      -  39 11 25.16650(N)    077 03 57.91202(W) AD(       ) 2
 JV4259  NGVD 29 (07/19/86)  144.8    (m)          475.     (f) VERT ANG       
 JV4259
 JV4259.Superseded values are not recommended for survey control.
 JV4259
 JV4259.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4259.See file dsdata.pdf to determine how the superseded data were derived.
 JV4259
 JV4259_MARKER: I = METAL ROD
 JV4259_SETTING: 0 = UNSPECIFIED SETTING
 JV4259_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4259
 JV4259  HISTORY     - Date     Condition        Report By
 JV4259  HISTORY     - 1969     MONUMENTED       WSSC
 JV4259
 JV4259                          STATION DESCRIPTION
 JV4259
 JV4259'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4259'THE STATION IS ABOUT 3/4 MILE NORTH OF BROOKVILLE AND 2 MILES
 JV4259'SOUTH OF SUNSHINE.
 JV4259'
 JV4259'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 97 AND
 JV4259'GREGG ROAD GO SOUTH ON ROUTE 97 FOR .6 MILE TO THE STATION ON
 JV4259'THE RIGHT.
 JV4259'
 JV4259'THE STATION IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 JV4259'IS 2 INCHES BELOW THE SURFACE.  IT IS 60.73 FEET SOUTH OF POWER
 JV4259'LINE POLE 720274, 86.28 FEET SOUTHEAST OF THE SOUTHEAST CORNER
 JV4259'OF HOUSE 20310, 99.26 FEET NORTHEAST OF THE NORTHEAST CORNER
 JV4259'OF HOUSE 20310, 50.71 FEET NORTHWEST OF A CORNER OF FENCE POST
 JV4259'AND 9.2 FEET WEST OF THE WEST EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4263 ***********************************************************************
 JV4263  DESIGNATION -  17197 WSSC 1969
 JV4263  PID         -  JV4263
 JV4263  STATE/COUNTY-  MD/MONTGOMERY
 JV4263  COUNTRY     -  US
 JV4263  USGS QUAD   -  SANDY SPRING (2016)
 JV4263
 JV4263                         *CURRENT SURVEY CONTROL
 JV4263  ______________________________________________________________________
 JV4263* NAD 83(1991) POSITION- 39 12 05.22535(N) 077 05 53.61233(W)   ADJUSTED
 JV4263* NAVD 88 ORTHO HEIGHT -   164.4   (meters)      539.    (feet) VERTCON3
 JV4263  ______________________________________________________________________
 JV4263  GEOID HEIGHT    -        -31.786 (meters)                     GEOID18
 JV4263  LAPLACE CORR    -         -1.73  (seconds)                    DEFLEC18
 JV4263  HORZ ORDER      -  SECOND
 JV4263
 JV4263.The horizontal coordinates were established by classical geodetic methods
 JV4263.and adjusted by the National Geodetic Survey in January 1992.
 JV4263
 JV4263.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4263.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4263
 JV4263.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4263.GEOID18 height accuracy estimate available here.
 JV4263
 JV4263.Click photographs - Photos may exist for this station.
 JV4263
 JV4263.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4263
 JV4263. The following values were computed from the NAD 83(1991) position.
 JV4263
 JV4263;                    North         East     Units Scale Factor Converg.
 JV4263;SPC MD       -   170,374.455   391,515.537   MT  0.99996596   -0 03 41.9
 JV4263;SPC MD       -   558,970.19  1,284,497.22   sFT  0.99996596   -0 03 41.9
 JV4263;UTM  18      - 4,341,229.606   318,819.063   MT  1.00000420   -1 19 35.6
 JV4263
 JV4263!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4263!SPC MD       -   0.99997919  x   0.99996596  =   0.99994515
 JV4263!UTM  18      -   0.99997919  x   1.00000420  =   0.99998339
 JV4263
 JV4263:                Primary Azimuth Mark                     Grid Az
 JV4263:SPC MD       -  REDDY                                    112 12 34.0
 JV4263:UTM  18      -  REDDY                                    113 28 27.7
 JV4263
 JV4263_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1881941229(NAD 83)
 JV4263
 JV4263|---------------------------------------------------------------------|
 JV4263| PID    Reference Object                     Distance      Geod. Az  |
 JV4263|                                                           dddmmss.s |
 JV4263| JV4246 REDDY                               APPROX. 2.7 KM 1120852.1 |
 JV4263|---------------------------------------------------------------------|
 JV4263
 JV4263                          SUPERSEDED SURVEY CONTROL
 JV4263
 JV4263  NAD 83(1986)-  39 12 05.22513(N)    077 05 53.62209(W) AD(       ) 2
 JV4263  NAD 27      -  39 12 04.84115(N)    077 05 54.69369(W) AD(       ) 2
 JV4263  NGVD 29 (07/19/86)  164.6    (m)          540.     (f) VERT ANG       
 JV4263
 JV4263.Superseded values are not recommended for survey control.
 JV4263
 JV4263.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4263.See file dsdata.pdf to determine how the superseded data were derived.
 JV4263
 JV4263_MARKER: I = METAL ROD
 JV4263_SETTING: 0 = UNSPECIFIED SETTING
 JV4263_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4263
 JV4263  HISTORY     - Date     Condition        Report By
 JV4263  HISTORY     - 1969     MONUMENTED       WSSC
 JV4263  HISTORY     - 19950323 MARK NOT FOUND   USPSQD
 JV4263
 JV4263                          STATION DESCRIPTION
 JV4263
 JV4263'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4263'THE STATION IS ABOUT 1 MILE NORTH OF MOUNT ZION AND 1-1/2 MILES
 JV4263'NORTHEAST OF CLAYSVILLE.
 JV4263'
 JV4263'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 582 AND
 JV4263'RIGGS ROAD GO SOUTH OF ROUTE 582 FOR .05 MILES TO THE STATION
 JV4263'ON THE LEFT.
 JV4263'
 JV4263'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4263'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 45.60 FEET SOUTH OF
 JV4263'POWER LINE POLE 123, 62.57 FEET SOUTHEAST OF PEPCO POLE 626812,
 JV4263'95.55 FEET EAST OF THE NORTHEAST CORNER OF A PORCH ON HOUSE
 JV4263'21014, 94.41 FEET EAST OF THE SOUTHEAST CORNER OF THE PORCH ON
 JV4263'HOUSE 21014 AND 13.0 FEET EAST OF THE EAST EDGE OF THE ROAD.
 JV4263
 JV4263                          STATION RECOVERY (1995)
 JV4263
 JV4263'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4263'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4262 ***********************************************************************
 JV4262  DESIGNATION -  17198 WSSC 1969
 JV4262  PID         -  JV4262
 JV4262  STATE/COUNTY-  MD/MONTGOMERY
 JV4262  COUNTRY     -  US
 JV4262  USGS QUAD   -  SANDY SPRING (2016)
 JV4262
 JV4262                         *CURRENT SURVEY CONTROL
 JV4262  ______________________________________________________________________
 JV4262* NAD 83(1991) POSITION- 39 12 24.60299(N) 077 05 19.70531(W)   ADJUSTED
 JV4262* NAVD 88 ORTHO HEIGHT -   161.5   (meters)      530.    (feet) VERTCON3
 JV4262  ______________________________________________________________________
 JV4262  GEOID HEIGHT    -        -31.796 (meters)                     GEOID18
 JV4262  LAPLACE CORR    -         -1.90  (seconds)                    DEFLEC18
 JV4262  HORZ ORDER      -  SECOND
 JV4262
 JV4262.The horizontal coordinates were established by classical geodetic methods
 JV4262.and adjusted by the National Geodetic Survey in January 1992.
 JV4262
 JV4262.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4262.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4262
 JV4262.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4262.GEOID18 height accuracy estimate available here.
 JV4262
 JV4262.Click photographs - Photos may exist for this station.
 JV4262
 JV4262.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4262
 JV4262. The following values were computed from the NAD 83(1991) position.
 JV4262
 JV4262;                    North         East     Units Scale Factor Converg.
 JV4262;SPC MD       -   170,971.183   392,329.672   MT  0.99996650   -0 03 20.7
 JV4262;SPC MD       -   560,927.96  1,287,168.27   sFT  0.99996650   -0 03 20.7
 JV4262;UTM  18      - 4,341,808.237   319,646.203   MT  1.00000052   -1 19 14.6
 JV4262
 JV4262!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4262!SPC MD       -   0.99997965  x   0.99996650  =   0.99994615
 JV4262!UTM  18      -   0.99997965  x   1.00000052  =   0.99998017
 JV4262
 JV4262:                Primary Azimuth Mark                     Grid Az
 JV4262:SPC MD       -  17197 WSSC 1969                          233 45 36.6
 JV4262:UTM  18      -  17197 WSSC 1969                          235 01 30.5
 JV4262
 JV4262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1964641808(NAD 83)
 JV4262
 JV4262|---------------------------------------------------------------------|
 JV4262| PID    Reference Object                     Distance      Geod. Az  |
 JV4262|                                                           dddmmss.s |
 JV4262| JV4251 MT ZION PEPCO MICROWAVE             APPROX. 2.3 KM 2140250.5 |
 JV4262| JV4263 17197 WSSC 1969                     APPROX. 1.0 KM 2334215.9 |
 JV4262|---------------------------------------------------------------------|
 JV4262
 JV4262                          SUPERSEDED SURVEY CONTROL
 JV4262
 JV4262  NAD 83(1986)-  39 12 24.60277(N)    077 05 19.71506(W) AD(       ) 2
 JV4262  NAD 27      -  39 12 24.21912(N)    077 05 20.78764(W) AD(       ) 2
 JV4262  NGVD 29 (07/19/86)  161.7    (m)          531.     (f) VERT ANG       
 JV4262
 JV4262.Superseded values are not recommended for survey control.
 JV4262
 JV4262.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4262.See file dsdata.pdf to determine how the superseded data were derived.
 JV4262
 JV4262_MARKER: I = METAL ROD
 JV4262_SETTING: 0 = UNSPECIFIED SETTING
 JV4262_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4262
 JV4262  HISTORY     - Date     Condition        Report By
 JV4262  HISTORY     - 1969     MONUMENTED       WSSC
 JV4262
 JV4262                          STATION DESCRIPTION
 JV4262
 JV4262'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4262'THE STATION IS ABOUT 1-1/2 MILES NORTHEAST OF MOUNT ZION AND
 JV4262'2-1/4 MILES NORTHEAST OF CLAYSVILLE.
 JV4262'
 JV4262'TO REACH THE STATION FROM THE INTERSECTION OF GREGG ROAD AND
 JV4262'ROUTE 582, GO NORTHEAST ON GREGG ROAD FOR .2 MILE TO THE
 JV4262'ENTRANCE TO SCHEIBLE FRAM AND THE STATION IS ON THE LEFT.
 JV4262'
 JV4262'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4262'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 31.78 FEET EAST OF
 JV4262'POWER LINE POLE 627217, 52.53 FEET SOUTHEAST OF THE TOP OF A
 JV4262'FENCE POST, AND 8.11 FEET NORTHEAST OF A PK NAIL SET IN THE TOP
 JV4262'OF A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4567 ***********************************************************************
 JV4567  DESIGNATION -  17199 WSSC 1969
 JV4567  PID         -  JV4567
 JV4567  STATE/COUNTY-  MD/MONTGOMERY
 JV4567  COUNTRY     -  US
 JV4567  USGS QUAD   -  POOLESVILLE (2016)
 JV4567
 JV4567                         *CURRENT SURVEY CONTROL
 JV4567  ______________________________________________________________________
 JV4567* NAD 83(1993) POSITION- 39 13 50.48049(N) 077 25 49.56571(W)   ADJUSTED
 JV4567* NAVD 88 ORTHO HEIGHT -   119.7   (meters)      393.    (feet) VERTCON3
 JV4567  ______________________________________________________________________
 JV4567  GEOID HEIGHT    -        -32.344 (meters)                     GEOID18
 JV4567  LAPLACE CORR    -          6.77  (seconds)                    DEFLEC18
 JV4567  HORZ ORDER      -  SECOND
 JV4567
 JV4567.The horizontal coordinates were established by classical geodetic methods
 JV4567.and adjusted by the National Geodetic Survey in November 1994.
 JV4567
 JV4567.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4567.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4567
 JV4567.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4567.GEOID18 height accuracy estimate available here.
 JV4567
 JV4567.Click photographs - Photos may exist for this station.
 JV4567
 JV4567.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4567
 JV4567. The following values were computed from the NAD 83(1993) position.
 JV4567
 JV4567;                    North         East     Units Scale Factor Converg.
 JV4567;SPC MD       -   173,703.342   362,835.643   MT  0.99996899   -0 16 12.6
 JV4567;SPC MD       -   569,891.71  1,190,403.27   sFT  0.99996899   -0 16 12.6
 JV4567;UTM  18      - 4,345,191.838   290,216.759   MT  1.00014191   -1 32 15.6
 JV4567
 JV4567!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4567!SPC MD       -   0.99998630  x   0.99996899  =   0.99995529
 JV4567!UTM  18      -   0.99998630  x   1.00014191  =   1.00012820
 JV4567
 JV4567:                Primary Azimuth Mark                     Grid Az
 JV4567:SPC MD       -  SCHOLLS HILL 3                           109 55 18.3
 JV4567:UTM  18      -  SCHOLLS HILL 3                           111 11 21.3
 JV4567
 JV4567_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9021645191(NAD 83)
 JV4567
 JV4567|---------------------------------------------------------------------|
 JV4567| PID    Reference Object                     Distance      Geod. Az  |
 JV4567|                                                           dddmmss.s |
 JV4567| JV3862 SCHOLLS HILL 3                      APPROX. 1.2 KM 1093905.7 |
 JV4567|---------------------------------------------------------------------|
 JV4567
 JV4567                          SUPERSEDED SURVEY CONTROL
 JV4567
 JV4567  NAD 83(1991)-  39 13 50.48050(N)    077 25 49.56570(W) AD(       ) 2
 JV4567  NAD 83(1986)-  39 13 50.48000(N)    077 25 49.57660(W) AD(       ) 2
 JV4567  NAD 27      -  39 13 50.10027(N)    077 25 50.61081(W) AD(       ) 2
 JV4567  NGVD 29 (07/19/86)  119.9    (m)          393.     (f) VERT ANG       
 JV4567
 JV4567.Superseded values are not recommended for survey control.
 JV4567
 JV4567.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4567.See file dsdata.pdf to determine how the superseded data were derived.
 JV4567
 JV4567_MARKER: I = METAL ROD
 JV4567_SETTING: 0 = UNSPECIFIED SETTING
 JV4567_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4567
 JV4567  HISTORY     - Date     Condition        Report By
 JV4567  HISTORY     - 1969     MONUMENTED       WSSC
 JV4567
 JV4567                          STATION DESCRIPTION
 JV4567
 JV4567'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4567'THE STATION IS ABOUT 1 MILE NORTHWEST OF DICKERSON, .1 MILE
 JV4567'SOUTHEAST OF THE MONTGOMERY AND FREDERICK COUNTY LINE.
 JV4567'
 JV4567'TO REACH THE STATION FROM DICKERSON SCHOOL ROAD AND ROUTE 28
 JV4567'GO NORTHWEST .8 MILE TO A DIRT FARM ROAD AND THE STATION IS ON
 JV4567'THE RIGHT.
 JV4567'
 JV4567'THE STATION MARK IS A CONCRETE MONUMENT WITH A IRON ROD CENTER.  IT
 JV4567'IS FLUSH WITH THE SURFACE AND IS 90.80 FEET SOUTHWEST OF POWER
 JV4567'LINE POLE 16965, 30.79 FEET NORTH OF A POWER LINE POLE, 7.28
 JV4567'FEET EAST OF THE EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1187 ***********************************************************************
 HV1187  DESIGNATION -  1720 WSSC
 HV1187  PID         -  HV1187
 HV1187  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1187  COUNTRY     -  US
 HV1187  USGS QUAD   -  LANHAM (2016)
 HV1187
 HV1187                         *CURRENT SURVEY CONTROL
 HV1187  ______________________________________________________________________
 HV1187* NAD 83(1986) POSITION- 38 56 11.     (N) 076 51 18.     (W)   SCALED
 HV1187* NAVD 88 ORTHO HEIGHT -    60.93  (+/-2cm)      199.9   (feet) VERTCON3
 HV1187  ______________________________________________________________________
 HV1187  GEOID HEIGHT    -        -32.409 (meters)                     GEOID18
 HV1187  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1187
 HV1187.The horizontal coordinates were scaled from a map and have
 HV1187.an estimated accuracy of +/- 6 seconds.
 HV1187
 HV1187.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1187.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1187
 HV1187.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1187.GEOID18 height accuracy estimate available here.
 HV1187
 HV1187.The vertical order pertains to the NGVD 29 superseded value.
 HV1187
 HV1187.Click photographs - Photos may exist for this station.
 HV1187
 HV1187;                    North         East    Units  Estimated Accuracy
 HV1187;SPC MD       -   140,960.      412,570.      MT  (+/- 180 meters Scaled)
 HV1187
 HV1187_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ392113(NAD 83)
 HV1187
 HV1187                          SUPERSEDED SURVEY CONTROL
 HV1187
 HV1187  NGVD 29 (11/26/84)   61.162  (m)          200.66   (f) ADJUSTED    2 0
 HV1187
 HV1187.Superseded values are not recommended for survey control.
 HV1187
 HV1187.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1187.See file dsdata.pdf to determine how the superseded data were derived.
 HV1187
 HV1187_MARKER: DD = SURVEY DISK
 HV1187_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1187_STAMPING: 1720
 HV1187_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1187
 HV1187  HISTORY     - Date     Condition        Report By
 HV1187  HISTORY     - UNK      MONUMENTED       WSSC
 HV1187  HISTORY     - 1944     GOOD             WSSC
 HV1187
 HV1187                          STATION DESCRIPTION
 HV1187
 HV1187'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1187'AT ARDMORE.
 HV1187'AT THE INTERSECTION OF ARDWICK ROAD AND JEFFERSON AVENUE, 136
 HV1187'FEET NORTH OF THE NORTH PROPERTY LINE OF ARDWICK ROAD, ON
 HV1187'THE WEST PROPERTY LINE OF JEFFERSON AVENUE, AND SOUTH OF ST.
 HV1187'GEORGES HALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4566 ***********************************************************************
 JV4566  DESIGNATION -  17200 WSSC 1969
 JV4566  PID         -  JV4566
 JV4566  STATE/COUNTY-  MD/MONTGOMERY
 JV4566  COUNTRY     -  US
 JV4566  USGS QUAD   -  POOLESVILLE (2016)
 JV4566
 JV4566                         *CURRENT SURVEY CONTROL
 JV4566  ______________________________________________________________________
 JV4566* NAD 83(1991) POSITION- 39 13 29.40552(N) 077 25 41.10280(W)   ADJUSTED
 JV4566* NAVD 88 ORTHO HEIGHT -   114.7   (meters)      376.    (feet) VERTCON3
 JV4566  ______________________________________________________________________
 JV4566  GEOID HEIGHT    -        -32.321 (meters)                     GEOID18
 JV4566  LAPLACE CORR    -          6.66  (seconds)                    DEFLEC18
 JV4566  HORZ ORDER      -  SECOND
 JV4566
 JV4566.The horizontal coordinates were established by classical geodetic methods
 JV4566.and adjusted by the National Geodetic Survey in January 1992.
 JV4566
 JV4566.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4566.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4566
 JV4566.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4566.GEOID18 height accuracy estimate available here.
 JV4566
 JV4566.Click photographs - Photos may exist for this station.
 JV4566
 JV4566.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4566
 JV4566. The following values were computed from the NAD 83(1991) position.
 JV4566
 JV4566;                    North         East     Units Scale Factor Converg.
 JV4566;SPC MD       -   173,052.488   363,035.566   MT  0.99996836   -0 16 07.2
 JV4566;SPC MD       -   567,756.37  1,191,059.19   sFT  0.99996836   -0 16 07.2
 JV4566;UTM  18      - 4,344,536.607   290,402.269   MT  1.00014095   -1 32 09.6
 JV4566
 JV4566!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4566!SPC MD       -   0.99998708  x   0.99996836  =   0.99995544
 JV4566!UTM  18      -   0.99998708  x   1.00014095  =   1.00012803
 JV4566
 JV4566_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9040244536(NAD 83)
 JV4566
 JV4566                          SUPERSEDED SURVEY CONTROL
 JV4566
 JV4566  NAD 83(1986)-  39 13 29.40504(N)    077 25 41.11364(W) AD(       ) 2
 JV4566  NAD 27      -  39 13 29.02497(N)    077 25 42.14821(W) AD(       ) 2
 JV4566  NGVD 29 (07/19/86)  114.9    (m)          377.     (f) VERT ANG       
 JV4566
 JV4566.Superseded values are not recommended for survey control.
 JV4566
 JV4566.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4566.See file dsdata.pdf to determine how the superseded data were derived.
 JV4566
 JV4566_MARKER: I = METAL ROD
 JV4566_SETTING: 0 = UNSPECIFIED SETTING
 JV4566_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4566
 JV4566  HISTORY     - Date     Condition        Report By
 JV4566  HISTORY     - 1969     MONUMENTED       WSSC
 JV4566
 JV4566                          STATION DESCRIPTION
 JV4566
 JV4566'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4566'THE STATION IS ABOUT 1/2 MILE NORTHWEST OF DICKERSON AND 1/2
 JV4566'MILE SOUTHWEST OF THE MONTGOMERY AND FREDERICK COUNTY LINES.
 JV4566'
 JV4566'TO REACH THE STATION FROM THE INTERSECTION OF DICKERSON SCHOOL
 JV4566'ROAD AND ROUTE 28, GO NORTHWEST FOR .5 MILES TO A ROAD LEFT
 JV4566'(MOUTH OR MONOCACY ROAD) TO THE LEFT FOR .1 MILE TO THE STATION
 JV4566'ON THE LEFT.
 JV4566'
 JV4566'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4566'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 65.63 FEET SOUTHWEST
 JV4566'OF POWER LINE POLE NO. 2, 69.47 FEET EAST OF POWER LINE POLE
 JV4566'NO. 32845, 31.73 FEET NORTHWEST OF A NAIL IN A FENCE POST AND
 JV4566'4.37 FEET NORTH OF A NAIL IN A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4550 ***********************************************************************
 JV4550  DESIGNATION -  17201 WSSC 1969
 JV4550  PID         -  JV4550
 JV4550  STATE/COUNTY-  MD/MONTGOMERY
 JV4550  COUNTRY     -  US
 JV4550  USGS QUAD   -  POOLESVILLE (2016)
 JV4550
 JV4550                         *CURRENT SURVEY CONTROL
 JV4550  ______________________________________________________________________
 JV4550* NAD 83(1991) POSITION- 39 13 48.13032(N) 077 23 14.59293(W)   ADJUSTED
 JV4550* NAVD 88 ORTHO HEIGHT -   146.5   (meters)      481.    (feet) VERTCON3
 JV4550  ______________________________________________________________________
 JV4550  GEOID HEIGHT    -        -32.198 (meters)                     GEOID18
 JV4550  LAPLACE CORR    -          6.38  (seconds)                    DEFLEC18
 JV4550  HORZ ORDER      -  SECOND
 JV4550
 JV4550.The horizontal coordinates were established by classical geodetic methods
 JV4550.and adjusted by the National Geodetic Survey in January 1992.
 JV4550
 JV4550.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4550.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4550
 JV4550.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4550.GEOID18 height accuracy estimate available here.
 JV4550
 JV4550.Click photographs - Photos may exist for this station.
 JV4550
 JV4550.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4550
 JV4550. The following values were computed from the NAD 83(1991) position.
 JV4550
 JV4550;                    North         East     Units Scale Factor Converg.
 JV4550;SPC MD       -   173,614.220   366,552.136   MT  0.99996892   -0 14 35.3
 JV4550;SPC MD       -   569,599.32  1,202,596.47   sFT  0.99996892   -0 14 35.3
 JV4550;UTM  18      - 4,345,020.507   293,930.979   MT  1.00012288   -1 30 37.4
 JV4550
 JV4550!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4550!SPC MD       -   0.99998207  x   0.99996892  =   0.99995099
 JV4550!UTM  18      -   0.99998207  x   1.00012288  =   1.00010494
 JV4550
 JV4550:                Primary Azimuth Mark                     Grid Az
 JV4550:SPC MD       -  SCHOLLS HILL 3                           263 04 45.4
 JV4550:UTM  18      -  SCHOLLS HILL 3                           264 20 47.5
 JV4550
 JV4550_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9393045020(NAD 83)
 JV4550
 JV4550|---------------------------------------------------------------------|
 JV4550| PID    Reference Object                     Distance      Geod. Az  |
 JV4550|                                                           dddmmss.s |
 JV4550| JV4542 DICKERSON PEPCO W STACK             APPROX. 7.0 KM 2505350.7 |
 JV4550| JV3862 SCHOLLS HILL 3                      APPROX. 2.6 KM 2625010.1 |
 JV4550|---------------------------------------------------------------------|
 JV4550
 JV4550                          SUPERSEDED SURVEY CONTROL
 JV4550
 JV4550  NAD 83(1986)-  39 13 48.13010(N)    077 23 14.60378(W) AD(       ) 2
 JV4550  NAD 27      -  39 13 47.75002(N)    077 23 15.64285(W) AD(       ) 2
 JV4550  NGVD 29 (07/19/86)  146.7    (m)          481.     (f) VERT ANG       
 JV4550
 JV4550.Superseded values are not recommended for survey control.
 JV4550
 JV4550.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4550.See file dsdata.pdf to determine how the superseded data were derived.
 JV4550
 JV4550_MARKER: I = METAL ROD
 JV4550_SETTING: 0 = UNSPECIFIED SETTING
 JV4550_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4550
 JV4550  HISTORY     - Date     Condition        Report By
 JV4550  HISTORY     - 1969     MONUMENTED       WSSC
 JV4550
 JV4550                          STATION DESCRIPTION
 JV4550
 JV4550'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4550'THE STATION IS ABOUT 1-3/4 MILES NORTHWEST OF BARNSVILLE AND
 JV4550'2-1/4 MILES NORTHEAST OF DICKERSON.
 JV4550'
 JV4550'TO REACH THE STATION FROM THE INTERSECTION OF HARRIS ROAD AND
 JV4550'BARNSVILLE ROAD GO NORTHEAST ON HARRIS ROAD FOR .8 MILE TO A
 JV4550'WHITE HOUSE ON THE LEFT AND THE STATION IS ON THE RIGHT.
 JV4550'
 JV4550'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4550'AND IS 4 INCHES BELOW THE SURFACE.  IT IS 33.36 FEET SOUTHEAST OF
 JV4550'POWER LINE POLE 12, 31.98 FEET EAST OF A TACK IN THE TOP OF A
 JV4550'FENCE POST, 8.24 FEET NORTHWEST OF A CORNER OF A FENCE POST
 JV4550'AND IS 27.21 FEET SOUTHWEST OF A CORNER OF A FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4551 ***********************************************************************
 JV4551  DESIGNATION -  17202 WSSC 1969
 JV4551  PID         -  JV4551
 JV4551  STATE/COUNTY-  MD/MONTGOMERY
 JV4551  COUNTRY     -  US
 JV4551  USGS QUAD   -  POOLESVILLE (2016)
 JV4551
 JV4551                         *CURRENT SURVEY CONTROL
 JV4551  ______________________________________________________________________
 JV4551* NAD 83(1991) POSITION- 39 13 25.93928(N) 077 23 32.43753(W)   ADJUSTED
 JV4551* NAVD 88 ORTHO HEIGHT -   138.5   (meters)      454.    (feet) VERTCON3
 JV4551  ______________________________________________________________________
 JV4551  GEOID HEIGHT    -        -32.199 (meters)                     GEOID18
 JV4551  LAPLACE CORR    -          6.38  (seconds)                    DEFLEC18
 JV4551  HORZ ORDER      -  SECOND
 JV4551
 JV4551.The horizontal coordinates were established by classical geodetic methods
 JV4551.and adjusted by the National Geodetic Survey in January 1992.
 JV4551
 JV4551.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4551.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4551
 JV4551.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4551.GEOID18 height accuracy estimate available here.
 JV4551
 JV4551.Click photographs - Photos may exist for this station.
 JV4551
 JV4551.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4551
 JV4551. The following values were computed from the NAD 83(1991) position.
 JV4551
 JV4551;                    North         East     Units Scale Factor Converg.
 JV4551;SPC MD       -   172,931.730   366,121.213   MT  0.99996826   -0 14 46.5
 JV4551;SPC MD       -   567,360.18  1,201,182.68   sFT  0.99996826   -0 14 46.5
 JV4551;UTM  18      - 4,344,347.608   293,484.999   MT  1.00012515   -1 30 48.0
 JV4551
 JV4551!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4551!SPC MD       -   0.99998332  x   0.99996826  =   0.99995158
 JV4551!UTM  18      -   0.99998332  x   1.00012515  =   1.00010847
 JV4551
 JV4551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9348444347(NAD 83)
 JV4551
 JV4551                          SUPERSEDED SURVEY CONTROL
 JV4551
 JV4551  NAD 83(1986)-  39 13 25.93903(N)    077 23 32.44831(W) AD(       ) 2
 JV4551  NAD 27      -  39 13 25.55861(N)    077 23 33.48679(W) AD(       ) 2
 JV4551  NGVD 29 (07/19/86)  138.7    (m)          455.     (f) VERT ANG       
 JV4551
 JV4551.Superseded values are not recommended for survey control.
 JV4551
 JV4551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4551.See file dsdata.pdf to determine how the superseded data were derived.
 JV4551
 JV4551_MARKER: I = METAL ROD
 JV4551_SETTING: 0 = UNSPECIFIED SETTING
 JV4551_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4551
 JV4551  HISTORY     - Date     Condition        Report By
 JV4551  HISTORY     - 1969     MONUMENTED       WSSC
 JV4551
 JV4551                          STATION DESCRIPTION
 JV4551
 JV4551'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4551'THE STATION IS ABOUT 1 MILE WEST OF BARNESVILLE AND 1-3/4 MILES
 JV4551'EAST OF DICKERSON.
 JV4551'
 JV4551'TO REACH THE STATION FROM BARNESVILLE ROAD AND ROUTE 109, GO
 JV4551'NORTHWEST ON BARNESVILLE ROAD FOR .9 MILES TO THE STATION ON
 JV4551'THE RIGHT.
 JV4551'
 JV4551'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4551'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 73.63 FEET EAST OF
 JV4551'POWER LINE POLE NO. M-2382, 14.05 FEET SOUTHWEST OF A NAIL IN
 JV4551'THE TOP OF A GUARD RAIL, 48.00 FEET SOUTHEAST OF THE EAST CORNER
 JV4551'OF A CONCRETE CATCH BASIN, AND IS 82.90 FEET SOUTHEAST OF THE
 JV4551'SOUTHEAST CORNER OF A CONCRETE CATCH BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4553 ***********************************************************************
 JV4553  DESIGNATION -  17203 WSSC 1969
 JV4553  PID         -  JV4553
 JV4553  STATE/COUNTY-  MD/MONTGOMERY
 JV4553  COUNTRY     -  US
 JV4553  USGS QUAD   -  POOLESVILLE (2016)
 JV4553
 JV4553                         *CURRENT SURVEY CONTROL
 JV4553  ______________________________________________________________________
 JV4553* NAD 83(1993) POSITION- 39 14 47.24637(N) 077 23 53.12109(W)   ADJUSTED
 JV4553* NAVD 88 ORTHO HEIGHT -   158.4   (meters)      520.    (feet) VERTCON3
 JV4553  ______________________________________________________________________
 JV4553  GEOID HEIGHT    -        -32.272 (meters)                     GEOID18
 JV4553  LAPLACE CORR    -          6.22  (seconds)                    DEFLEC18
 JV4553  HORZ ORDER      -  SECOND
 JV4553
 JV4553.The horizontal coordinates were established by classical geodetic methods
 JV4553.and adjusted by the National Geodetic Survey in November 1994.
 JV4553
 JV4553.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4553.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4553
 JV4553.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4553.GEOID18 height accuracy estimate available here.
 JV4553
 JV4553.Click photographs - Photos may exist for this station.
 JV4553
 JV4553.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4553
 JV4553. The following values were computed from the NAD 83(1993) position.
 JV4553
 JV4553;                    North         East     Units Scale Factor Converg.
 JV4553;SPC MD       -   175,441.197   365,636.034   MT  0.99997073   -0 14 59.5
 JV4553;SPC MD       -   575,593.33  1,199,590.89   sFT  0.99997073   -0 14 59.5
 JV4553;UTM  18      - 4,346,867.589   293,055.379   MT  1.00012734   -1 31 03.7
 JV4553
 JV4553!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4553!SPC MD       -   0.99998021  x   0.99997073  =   0.99995094
 JV4553!UTM  18      -   0.99998021  x   1.00012734  =   1.00010755
 JV4553
 JV4553_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9305546867(NAD 83)
 JV4553
 JV4553                          SUPERSEDED SURVEY CONTROL
 JV4553
 JV4553  NAD 83(1991)-  39 14 47.24637(N)    077 23 53.12108(W) AD(       ) 2
 JV4553  NAD 83(1986)-  39 14 47.24607(N)    077 23 53.13212(W) AD(       ) 2
 JV4553  NAD 27      -  39 14 46.86683(N)    077 23 54.17004(W) AD(       ) 2
 JV4553  NGVD 29 (07/19/86)  158.6    (m)          520.     (f) VERT ANG       
 JV4553
 JV4553.Superseded values are not recommended for survey control.
 JV4553
 JV4553.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4553.See file dsdata.pdf to determine how the superseded data were derived.
 JV4553
 JV4553_MARKER: I = METAL ROD
 JV4553_SETTING: 0 = UNSPECIFIED SETTING
 JV4553_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4553
 JV4553  HISTORY     - Date     Condition        Report By
 JV4553  HISTORY     - 1969     MONUMENTED       WSSC
 JV4553
 JV4553                          STATION DESCRIPTION
 JV4553
 JV4553'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4553'THE STATION IS ABOUT 2 MILES NORTHWEST OF BARNESVILLE AND 2-1/2
 JV4553'MILES NORTHEAST OF DICKERSON.
 JV4553'
 JV4553'TO REACH THE STATION FROM THE INTERSECTION OF MOUNT EPHRAIM
 JV4553'ROAD AND HARRIS ROAD GO NORTHEAST ON MOUNT EPHRAIM ROAD FOR 200
 JV4553'FEET TO THE STATION ON THE LEFT.
 JV4553'
 JV4553'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4553'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 4.72 FEET EAST OF
 JV4553'NORTHEAST CORNER OF A CONCRETE POST, 56.75 FEET SOUTH OF AN
 JV4553'18-INCH LOCUST TREE, 64.46 FEET SOUTHWEST OF POWER LINE POLE
 JV4553'393, 99.44 FEET NORTHWEST OF POWER LINE POLE 392.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4569 ***********************************************************************
 JV4569  DESIGNATION -  17204 WSSC 1969
 JV4569  PID         -  JV4569
 JV4569  STATE/COUNTY-  MD/MONTGOMERY
 JV4569  COUNTRY     -  US
 JV4569  USGS QUAD   -  POOLESVILLE (2016)
 JV4569
 JV4569                         *CURRENT SURVEY CONTROL
 JV4569  ______________________________________________________________________
 JV4569* NAD 83(1991) POSITION- 39 12 22.18244(N) 077 26 08.17485(W)   ADJUSTED
 JV4569* NAVD 88 ORTHO HEIGHT -   111.3   (meters)      365.    (feet) VERTCON3
 JV4569  ______________________________________________________________________
 JV4569  GEOID HEIGHT    -        -32.299 (meters)                     GEOID18
 JV4569  LAPLACE CORR    -          6.47  (seconds)                    DEFLEC18
 JV4569  HORZ ORDER      -  SECOND
 JV4569
 JV4569.The horizontal coordinates were established by classical geodetic methods
 JV4569.and adjusted by the National Geodetic Survey in January 1992.
 JV4569
 JV4569.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4569.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4569
 JV4569.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4569.GEOID18 height accuracy estimate available here.
 JV4569
 JV4569.Click photographs - Photos may exist for this station.
 JV4569
 JV4569.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4569
 JV4569. The following values were computed from the NAD 83(1991) position.
 JV4569
 JV4569;                    North         East     Units Scale Factor Converg.
 JV4569;SPC MD       -   170,982.573   362,376.337   MT  0.99996643   -0 16 24.2
 JV4569;SPC MD       -   560,965.32  1,188,896.37   sFT  0.99996643   -0 16 24.2
 JV4569;UTM  18      - 4,342,481.415   289,697.307   MT  1.00014460   -1 32 24.5
 JV4569
 JV4569!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4569!SPC MD       -   0.99998761  x   0.99996643  =   0.99995404
 JV4569!UTM  18      -   0.99998761  x   1.00014460  =   1.00013221
 JV4569
 JV4569:                Primary Azimuth Mark                     Grid Az
 JV4569:SPC MD       -  SCHOLLS HILL 3                           034 13 57.9
 JV4569:UTM  18      -  SCHOLLS HILL 3                           035 29 58.2
 JV4569
 JV4569_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8969742481(NAD 83)
 JV4569
 JV4569|---------------------------------------------------------------------|
 JV4569| PID    Reference Object                     Distance      Geod. Az  |
 JV4569|                                                           dddmmss.s |
 JV4569| JV3862 SCHOLLS HILL 3                      APPROX. 2.8 KM 0335733.7 |
 JV4569| JV4568 17205 WSSC 1969                     414.808 METERS 0441736.7 |
 JV4569|---------------------------------------------------------------------|
 JV4569
 JV4569                          SUPERSEDED SURVEY CONTROL
 JV4569
 JV4569  NAD 83(1986)-  39 12 22.18189(N)    077 26 08.18546(W) AD(       ) 2
 JV4569  NAD 27      -  39 12 21.80093(N)    077 26 09.21948(W) AD(       ) 2
 JV4569  NGVD 29 (07/19/86)  111.5    (m)          366.     (f) VERT ANG       
 JV4569
 JV4569.Superseded values are not recommended for survey control.
 JV4569
 JV4569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4569.See file dsdata.pdf to determine how the superseded data were derived.
 JV4569
 JV4569_MARKER: I = METAL ROD
 JV4569_SETTING: 0 = UNSPECIFIED SETTING
 JV4569_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4569
 JV4569  HISTORY     - Date     Condition        Report By
 JV4569  HISTORY     - 1969     MONUMENTED       WSSC
 JV4569  HISTORY     - 19950804 GOOD             USPSQD
 JV4569
 JV4569                          STATION DESCRIPTION
 JV4569
 JV4569'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4569'THE STATION IS ABOUT 1 MILE SOUTHWEST OF DICKERSON, 2-1/4 MILES
 JV4569'NORTHWEST OF BEALLSVILLE.
 JV4569'
 JV4569'TO REACH THE STATION FROM ROUTE 109 AND ROUTE 28 IN BEALLSVILLE,
 JV4569'GO NORTHWEST 2.2 MILES ON ROUTE 28 TO MARTINSBURG ROAD AND THE
 JV4569'STATION IS ON THE LEFT.
 JV4569'
 JV4569'THE STATION MARK IS A CONCRETE MONUMENT WITH A IRON ROD CENTER
 JV4569'THAT IS FLUSH WITH THE SURFACE.  IT IS 92.04 FEET SOUTHWEST OF
 JV4569'POWER LINE POLE 45, 49.54 SOUTH OF A POWER LINE POLE, 9.04 FEET
 JV4569'NORTHWEST OF A 12-INCH TWIN LOCUST, 15.58 FEET EAST OF A 6-INCH
 JV4569'LOCUST.
 JV4569
 JV4569                          STATION RECOVERY (1995)
 JV4569
 JV4569'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4569'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4568 ***********************************************************************
 JV4568  DESIGNATION -  17205 WSSC 1969
 JV4568  PID         -  JV4568
 JV4568  STATE/COUNTY-  MD/MONTGOMERY
 JV4568  COUNTRY     -  US
 JV4568  USGS QUAD   -  POOLESVILLE (2016)
 JV4568
 JV4568                         *CURRENT SURVEY CONTROL
 JV4568  ______________________________________________________________________
 JV4568* NAD 83(1991) POSITION- 39 12 31.81003(N) 077 25 56.10103(W)   ADJUSTED
 JV4568* NAVD 88 ORTHO HEIGHT -    84.7   (meters)      278.    (feet) VERTCON3
 JV4568  ______________________________________________________________________
 JV4568  GEOID HEIGHT    -        -32.295 (meters)                     GEOID18
 JV4568  LAPLACE CORR    -          6.50  (seconds)                    DEFLEC18
 JV4568  HORZ ORDER      -  SECOND
 JV4568
 JV4568.The horizontal coordinates were established by classical geodetic methods
 JV4568.and adjusted by the National Geodetic Survey in January 1992.
 JV4568
 JV4568.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4568.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4568
 JV4568.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4568.GEOID18 height accuracy estimate available here.
 JV4568
 JV4568.Click photographs - Photos may exist for this station.
 JV4568
 JV4568.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4568
 JV4568. The following values were computed from the NAD 83(1991) position.
 JV4568
 JV4568;                    North         East     Units Scale Factor Converg.
 JV4568;SPC MD       -   171,278.086   362,667.415   MT  0.99996670   -0 16 16.7
 JV4568;SPC MD       -   561,934.85  1,189,851.34   sFT  0.99996670   -0 16 16.7
 JV4568;UTM  18      - 4,342,770.472   289,994.901   MT  1.00014305   -1 32 17.2
 JV4568
 JV4568!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4568!SPC MD       -   0.99999178  x   0.99996670  =   0.99995848
 JV4568!UTM  18      -   0.99999178  x   1.00014305  =   1.00013483
 JV4568
 JV4568_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8999442770(NAD 83)
 JV4568
 JV4568                          SUPERSEDED SURVEY CONTROL
 JV4568
 JV4568  NAD 83(1986)-  39 12 31.80949(N)    077 25 56.11168(W) AD(       ) 2
 JV4568  NAD 27      -  39 12 31.42866(N)    077 25 57.14607(W) AD(       ) 2
 JV4568  NGVD 29 (07/19/86)   84.9    (m)          279.     (f) VERT ANG       
 JV4568
 JV4568.Superseded values are not recommended for survey control.
 JV4568
 JV4568.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4568.See file dsdata.pdf to determine how the superseded data were derived.
 JV4568
 JV4568_MARKER: I = METAL ROD
 JV4568_SETTING: 0 = UNSPECIFIED SETTING
 JV4568_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4568
 JV4568  HISTORY     - Date     Condition        Report By
 JV4568  HISTORY     - 1969     MONUMENTED       WSSC
 JV4568
 JV4568                          STATION DESCRIPTION
 JV4568
 JV4568'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4568'THE STATION IS ABOUT 1 MILE SOUTHWEST OF DICKERSON, 2-1/4 MILES
 JV4568'NORTHWEST OF BEALLSILLE.
 JV4568'
 JV4568'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 109 AND
 JV4568'ROUTE 28 IN BEALLSVILLE, GO NORTHWEST 2.2 MILES ON ROUTE 28 TO
 JV4568'MARTINSBURG ROAD, GO RIGHT OF MARTINSBURG ROAD FOR .3 MILE TO THE
 JV4568'LITTLE MONOCACY RIVER AND THE STATION IS ON THE RIGHT.
 JV4568'
 JV4568'THE STATION MARK IS A CONCRETE MONUMENT WITH A IRON ROD CENTER
 JV4568'2 INCHES BELOW THE SURFACE.  IT IS 87.26 FEET SOUTHEAST OF
 JV4568'POWER LINE POLE 23, 66.90 FEET SOUTH OF POWER LINE POLE 289,
 JV4568'17.10 FEET NORTHEAST OF THE NORTHEAST CORNER OF A CONCRETE
 JV4568'HEADWALL, 7.85 FEET EAST OF THE EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4559 ***********************************************************************
 JV4559  DESIGNATION -  17206 WSSC 1969
 JV4559  PID         -  JV4559
 JV4559  STATE/COUNTY-  MD/MONTGOMERY
 JV4559  COUNTRY     -  US
 JV4559  USGS QUAD   -  POOLESVILLE (2016)
 JV4559
 JV4559                         *CURRENT SURVEY CONTROL
 JV4559  ______________________________________________________________________
 JV4559* NAD 83(1991) POSITION- 39 12 21.84830(N) 077 24 40.95999(W)   ADJUSTED
 JV4559* NAVD 88 ORTHO HEIGHT -   142.0   (meters)      466.    (feet) VERTCON3
 JV4559  ______________________________________________________________________
 JV4559  GEOID HEIGHT    -        -32.216 (meters)                     GEOID18
 JV4559  LAPLACE CORR    -          6.70  (seconds)                    DEFLEC18
 JV4559  HORZ ORDER      -  SECOND
 JV4559
 JV4559.The horizontal coordinates were established by classical geodetic methods
 JV4559.and adjusted by the National Geodetic Survey in January 1992.
 JV4559
 JV4559.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4559.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4559
 JV4559.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4559.GEOID18 height accuracy estimate available here.
 JV4559
 JV4559.Click photographs - Photos may exist for this station.
 JV4559
 JV4559.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4559
 JV4559. The following values were computed from the NAD 83(1991) position.
 JV4559
 JV4559;                    North         East     Units Scale Factor Converg.
 JV4559;SPC MD       -   170,962.562   364,468.735   MT  0.99996642   -0 15 29.5
 JV4559;SPC MD       -   560,899.67  1,195,761.17   sFT  0.99996642   -0 15 29.5
 JV4559;UTM  18      - 4,342,415.144   291,789.114   MT  1.00013381   -1 31 29.3
 JV4559
 JV4559!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4559!SPC MD       -   0.99998278  x   0.99996642  =   0.99994920
 JV4559!UTM  18      -   0.99998278  x   1.00013381  =   1.00011658
 JV4559
 JV4559_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9178942415(NAD 83)
 JV4559
 JV4559                          SUPERSEDED SURVEY CONTROL
 JV4559
 JV4559  NAD 83(1986)-  39 12 21.84791(N)    077 24 40.97059(W) AD(       ) 2
 JV4559  NAD 27      -  39 12 21.46624(N)    077 24 42.00708(W) AD(       ) 2
 JV4559  NGVD 29 (07/19/86)  142.2    (m)          467.     (f) VERT ANG       
 JV4559
 JV4559.Superseded values are not recommended for survey control.
 JV4559
 JV4559.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4559.See file dsdata.pdf to determine how the superseded data were derived.
 JV4559
 JV4559_MARKER: I = METAL ROD
 JV4559_SETTING: 0 = UNSPECIFIED SETTING
 JV4559_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4559
 JV4559  HISTORY     - Date     Condition        Report By
 JV4559  HISTORY     - 1969     MONUMENTED       WSSC
 JV4559
 JV4559                          STATION DESCRIPTION
 JV4559
 JV4559'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4559'THE STATION IS ABOUT 1-1/2 MILES SOUTHEAST OF DICKERSON, 1-1/2
 JV4559'MILES NORTHWEST OF BEALLSVILLE.
 JV4559'
 JV4559'TO REACH THE STATION FROM ROUTE 28 AND BIG WOODS ROAD, GO
 JV4559'SOUTHEAST ON BIG WOODS ROAD FOR 1.4 MILES TO A SHARP CURVE IN
 JV4559'THE ROAD AND THE STATION IS ON THE LEFT.
 JV4559'
 JV4559'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4559'AND IS FLUSH WITH THE SURFACE.  IT IS 38.99 FEET SOUTHEAST OF A
 JV4559'3-INCH CHERRY TREE, 45.67 FEET NORTH OF POWER LINE POLE 32998,
 JV4559'47.34 FEET SOUTHWEST OF THE NORTHWEST CORNER OF A HOUSE AND 38.68
 JV4559'FEET WEST OF THE SOUTHWEST CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4467 ***********************************************************************
 JV4467  DESIGNATION -  17208 WSSC 1969
 JV4467  PID         -  JV4467
 JV4467  STATE/COUNTY-  MD/MONTGOMERY
 JV4467  COUNTRY     -  US
 JV4467  USGS QUAD   -  GERMANTOWN (2016)
 JV4467
 JV4467                         *CURRENT SURVEY CONTROL
 JV4467  ______________________________________________________________________
 JV4467* NAD 83(1991) POSITION- 39 10 44.31648(N) 077 16 23.03064(W)   ADJUSTED
 JV4467* NAVD 88 ORTHO HEIGHT -   149.4   (meters)      490.    (feet) VERTCON3
 JV4467  ______________________________________________________________________
 JV4467  GEOID HEIGHT    -        -31.846 (meters)                     GEOID18
 JV4467  LAPLACE CORR    -          3.11  (seconds)                    DEFLEC18
 JV4467  HORZ ORDER      -  SECOND
 JV4467
 JV4467.The horizontal coordinates were established by classical geodetic methods
 JV4467.and adjusted by the National Geodetic Survey in January 1992.
 JV4467
 JV4467.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4467.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4467
 JV4467.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4467.GEOID18 height accuracy estimate available here.
 JV4467
 JV4467.Click photographs - Photos may exist for this station.
 JV4467
 JV4467.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4467
 JV4467. The following values were computed from the NAD 83(1991) position.
 JV4467
 JV4467;                    North         East     Units Scale Factor Converg.
 JV4467;SPC MD       -   167,910.146   376,406.040   MT  0.99996381   -0 10 17.0
 JV4467;SPC MD       -   550,885.20  1,234,925.48   sFT  0.99996381   -0 10 17.0
 JV4467;UTM  18      - 4,339,099.303   303,657.721   MT  1.00007469   -1 26 11.2
 JV4467
 JV4467!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4467!SPC MD       -   0.99998156  x   0.99996381  =   0.99994537
 JV4467!UTM  18      -   0.99998156  x   1.00007469  =   1.00005625
 JV4467
 JV4467:                Primary Azimuth Mark                     Grid Az
 JV4467:SPC MD       -  SCHOOL RM 3                              204 20 03.0
 JV4467:UTM  18      -  SCHOOL RM 3                              205 35 57.2
 JV4467
 JV4467_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0365739099(NAD 83)
 JV4467
 JV4467|---------------------------------------------------------------------|
 JV4467| PID    Reference Object                     Distance      Geod. Az  |
 JV4467|                                                           dddmmss.s |
 JV4467| JV4455 GERMANTOWN AEC TANK                 APPROX. 1.5 KM 0924419.4 |
 JV4467| JV4454 GERMANTOWN ATT MICROWAVE            APPROX. 1.4 KM 0994118.3 |
 JV4467| JV4458 SCHOOL RM 3                         APPROX. 1.1 KM 2040946.0 |
 JV4467|---------------------------------------------------------------------|
 JV4467
 JV4467                          SUPERSEDED SURVEY CONTROL
 JV4467
 JV4467  NAD 83(1986)-  39 10 44.31598(N)    077 16 23.04106(W) AD(       ) 2
 JV4467  NAD 27      -  39 10 43.93209(N)    077 16 24.09381(W) AD(       ) 2
 JV4467  NGVD 29 (07/19/86)  149.6    (m)          491.     (f) VERT ANG       
 JV4467
 JV4467.Superseded values are not recommended for survey control.
 JV4467
 JV4467.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4467.See file dsdata.pdf to determine how the superseded data were derived.
 JV4467
 JV4467_MARKER: I = METAL ROD
 JV4467_SETTING: 0 = UNSPECIFIED SETTING
 JV4467_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4467
 JV4467  HISTORY     - Date     Condition        Report By
 JV4467  HISTORY     - 1969     MONUMENTED       WSSC
 JV4467
 JV4467                          STATION DESCRIPTION
 JV4467
 JV4467'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4467'THE STATION IS ABOUT 1/4 MILE NORTH OF GERMANTOWN AND 2-1/2
 JV4467'MILES EAST OF BOYDS.
 JV4467'
 JV4467'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 120 AND
 JV4467'118 IN THE TOWN OF GERMANTOWN, GO NORTHWEST ON ROUTE 120 FOR
 JV4467'.45 MILES TO THE JUNCTION OF WATERS ROAD AND THE STATION IS
 JV4467'ON THE RIGHT.
 JV4467'
 JV4467'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4467'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 40.12 FEET EAST OF
 JV4467'POLE NO. F-46832, 22.07 FEET NORTH OF POLE NO. 29811, 54.94
 JV4467'FEET SOUTHWEST OF THE SOUTHWEST CORNER OF HOUSE 5, AND 64.74
 JV4467'FEET NORTHWEST OF THE NORTHWEST CORNER OF HOUSE 4.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6010 ***********************************************************************
 JV6010  DESIGNATION -  17209 WSSC 1969
 JV6010  PID         -  JV6010
 JV6010  STATE/COUNTY-  MD/MONTGOMERY
 JV6010  COUNTRY     -  US
 JV6010  USGS QUAD   -  BELTSVILLE (2016)
 JV6010
 JV6010                         *CURRENT SURVEY CONTROL
 JV6010  ______________________________________________________________________
 JV6010* NAD 83(1991) POSITION- 39 06 26.49137(N) 076 59 42.24789(W)   ADJUSTED
 JV6010* NAVD 88 ORTHO HEIGHT -   163.3   (meters)      536.    (feet) VERTCON3
 JV6010  ______________________________________________________________________
 JV6010  GEOID HEIGHT    -        -31.962 (meters)                     GEOID18
 JV6010  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 JV6010  HORZ ORDER      -  SECOND
 JV6010
 JV6010.The horizontal coordinates were established by classical geodetic methods
 JV6010.and adjusted by the National Geodetic Survey in January 1992.
 JV6010
 JV6010.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6010.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6010
 JV6010.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6010.GEOID18 height accuracy estimate available here.
 JV6010
 JV6010.Click photographs - Photos may exist for this station.
 JV6010
 JV6010.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6010
 JV6010. The following values were computed from the NAD 83(1991) position.
 JV6010
 JV6010;                    North         East     Units Scale Factor Converg.
 JV6010;SPC MD       -   159,924.270   400,426.503   MT  0.99995799   +0 00 11.1
 JV6010;SPC MD       -   524,684.88  1,313,732.62   sFT  0.99995799   +0 00 11.1
 JV6010;UTM  18      - 4,330,585.245   327,497.663   MT  0.99996641   -1 15 31.5
 JV6010
 JV6010!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6010!SPC MD       -   0.99997940  x   0.99995799  =   0.99993739
 JV6010!UTM  18      -   0.99997940  x   0.99996641  =   0.99994581
 JV6010
 JV6010:                Primary Azimuth Mark                     Grid Az
 JV6010:SPC MD       -  SPENCER                                  027 36 17.6
 JV6010:UTM  18      -  SPENCER                                  028 52 00.2
 JV6010
 JV6010_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2749730585(NAD 83)
 JV6010
 JV6010|---------------------------------------------------------------------|
 JV6010| PID    Reference Object                     Distance      Geod. Az  |
 JV6010|                                                           dddmmss.s |
 JV6010| JV5947 SPENCER                             APPROX. 1.7 KM 0273628.7 |
 JV6010| JV6011 17210 WSSC 1969                     299.198 METERS 29805     |
 JV6010|---------------------------------------------------------------------|
 JV6010
 JV6010                          SUPERSEDED SURVEY CONTROL
 JV6010
 JV6010  NAD 83(1986)-  39 06 26.49079(N)    076 59 42.25782(W) AD(       ) 2
 JV6010  NAD 27      -  39 06 26.10123(N)    076 59 43.34185(W) AD(       ) 2
 JV6010  NGVD 29 (07/19/86)  163.5    (m)          536.     (f) VERT ANG       
 JV6010
 JV6010.Superseded values are not recommended for survey control.
 JV6010
 JV6010.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6010.See file dsdata.pdf to determine how the superseded data were derived.
 JV6010
 JV6010_MARKER: I = METAL ROD
 JV6010_SETTING: 0 = UNSPECIFIED SETTING
 JV6010_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6010
 JV6010  HISTORY     - Date     Condition        Report By
 JV6010  HISTORY     - 1969     MONUMENTED       WSSC
 JV6010
 JV6010                          STATION DESCRIPTION
 JV6010
 JV6010'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6010'THE STATION IS ABOUT 1 MILE SOUTHWEST OF SPENCERVILLE AND IN
 JV6010'THE TOWN OF CLOVERLY.
 JV6010'
 JV6010'THE STATION IS LOCATED ON THE NORTH SIDE OF BRIGGS CHANEY
 JV6010'ROAD ON CLOVERLY ELEMENTARY SCHOOL PROPERTY.
 JV6010'
 JV6010'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV6010'AND IS FLUSH WITH THE SURFACE.  IT IS 51.25 FEET NORTHWEST OF
 JV6010'PEPCO POLE 723200, 23.79 FEET SOUTHWEST OF A 6-INCH ASH, 44.47
 JV6010'FEET WEST OF THE WEST END OF A CONCRETE WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1302 ***********************************************************************
 HV1302  DESIGNATION -  1721 WSSC
 HV1302  PID         -  HV1302
 HV1302  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1302  COUNTRY     -  US
 HV1302  USGS QUAD   -  LANHAM (2016)
 HV1302
 HV1302                         *CURRENT SURVEY CONTROL
 HV1302  ______________________________________________________________________
 HV1302* NAD 83(1986) POSITION- 38 53 23.     (N) 076 51 46.     (W)   SCALED
 HV1302* NAVD 88 ORTHO HEIGHT -    54.74  (+/-2cm)      179.6   (feet) VERTCON3
 HV1302  ______________________________________________________________________
 HV1302  GEOID HEIGHT    -        -32.452 (meters)                     GEOID18
 HV1302  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1302
 HV1302.The horizontal coordinates were scaled from a map and have
 HV1302.an estimated accuracy of +/- 6 seconds.
 HV1302
 HV1302.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1302.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1302
 HV1302.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1302.GEOID18 height accuracy estimate available here.
 HV1302
 HV1302.The vertical order pertains to the NGVD 29 superseded value.
 HV1302
 HV1302.Click photographs - Photos may exist for this station.
 HV1302
 HV1302;                    North         East    Units  Estimated Accuracy
 HV1302;SPC MD       -   135,770.      411,910.      MT  (+/- 180 meters Scaled)
 HV1302
 HV1302_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ384061(NAD 83)
 HV1302
 HV1302                          SUPERSEDED SURVEY CONTROL
 HV1302
 HV1302  NGVD 29 (11/26/84)   54.982  (m)          180.39   (f) ADJUSTED    2 0
 HV1302
 HV1302.Superseded values are not recommended for survey control.
 HV1302
 HV1302.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1302.See file dsdata.pdf to determine how the superseded data were derived.
 HV1302
 HV1302_MARKER: DD = SURVEY DISK
 HV1302_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1302_STAMPING: 1721
 HV1302_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1302
 HV1302  HISTORY     - Date     Condition        Report By
 HV1302  HISTORY     - 1944     MONUMENTED       WSSC
 HV1302
 HV1302                          STATION DESCRIPTION
 HV1302
 HV1302'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1302'AT RANDOLPH VILLAGE.
 HV1302'IN THE SOUTHEAST CORNER OF THE INTERSECTION OF CENTRAL AVENUE
 HV1302'AND RITCHIE ROAD, 38.1 FEET EAST OF THE CENTERLINE OF RITCHIE ROAD,
 HV1302'AND 23.2 FEET SOUTH OF THE CENTERLINE OF CENTRAL AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6011 ***********************************************************************
 JV6011  DESIGNATION -  17210 WSSC 1969
 JV6011  PID         -  JV6011
 JV6011  STATE/COUNTY-  MD/MONTGOMERY
 JV6011  COUNTRY     -  US
 JV6011  USGS QUAD   -  BELTSVILLE (2016)
 JV6011
 JV6011                         *CURRENT SURVEY CONTROL
 JV6011  ______________________________________________________________________
 JV6011* NAD 83(1991) POSITION- 39 06 31.05783(N) 076 59 53.23527(W)   ADJUSTED
 JV6011* NAVD 88 ORTHO HEIGHT -   160.7   (meters)      527.    (feet) VERTCON3
 JV6011  ______________________________________________________________________
 JV6011  GEOID HEIGHT    -        -31.957 (meters)                     GEOID18
 JV6011  LAPLACE CORR    -         -2.94  (seconds)                    DEFLEC18
 JV6011  HORZ ORDER      -  SECOND
 JV6011
 JV6011.The horizontal coordinates were established by classical geodetic methods
 JV6011.and adjusted by the National Geodetic Survey in January 1992.
 JV6011
 JV6011.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6011.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6011
 JV6011.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6011.GEOID18 height accuracy estimate available here.
 JV6011
 JV6011.Click photographs - Photos may exist for this station.
 JV6011
 JV6011.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6011
 JV6011. The following values were computed from the NAD 83(1991) position.
 JV6011
 JV6011;                    North         East     Units Scale Factor Converg.
 JV6011;SPC MD       -   160,065.076   400,162.523   MT  0.99995808   +0 00 04.2
 JV6011;SPC MD       -   525,146.84  1,312,866.54   sFT  0.99995808   +0 00 04.2
 JV6011;UTM  18      - 4,330,731.831   327,236.845   MT  0.99996752   -1 15 38.6
 JV6011
 JV6011!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6011!SPC MD       -   0.99997980  x   0.99995808  =   0.99993788
 JV6011!UTM  18      -   0.99997980  x   0.99996752  =   0.99994732
 JV6011
 JV6011_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2723630731(NAD 83)
 JV6011
 JV6011                          SUPERSEDED SURVEY CONTROL
 JV6011
 JV6011  NAD 83(1986)-  39 06 31.05725(N)    076 59 53.24519(W) AD(       ) 2
 JV6011  NAD 27      -  39 06 30.66777(N)    076 59 54.32887(W) AD(       ) 2
 JV6011  NGVD 29 (07/19/86)  160.9    (m)          528.     (f) VERT ANG       
 JV6011
 JV6011.Superseded values are not recommended for survey control.
 JV6011
 JV6011.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6011.See file dsdata.pdf to determine how the superseded data were derived.
 JV6011
 JV6011_MARKER: I = METAL ROD
 JV6011_SETTING: 0 = UNSPECIFIED SETTING
 JV6011_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6011
 JV6011  HISTORY     - Date     Condition        Report By
 JV6011  HISTORY     - 1970     MONUMENTED       WSSC
 JV6011
 JV6011                          STATION DESCRIPTION
 JV6011
 JV6011'DESCRIBED BY WASH SUBURB SAN COMM 1970
 JV6011'THE STATION IS ABOUT 1 MILE SOUTHWEST OF SPENCERVILLE AND IN
 JV6011'IN THE TOWN OF CLOVERLY.
 JV6011'
 JV6011'THE STATION IS ON THE WEST SIDE OF NEW HAMPSHIRE AVENUE
 JV6011'(ROUTE 650) AT BRIGGS CHANEY ROAD.
 JV6011'
 JV6011'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV6011'AND IS FLUSH WITH THE SURFACE.  IT IS 7.06 FEET SOUTHWEST OF PEPCO
 JV6011'POLE 72227, 93.43 FEET NORTHWEST OF C AND P POLE 1, 61.13 FEET
 JV6011'NORTHWEST OF C AND P POLE 30 AND 14.0 FEET WEST OF THE WEST
 JV6011'EDGE OF NEW HAMPSHIRE AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4513 ***********************************************************************
 JV4513  DESIGNATION -  17211 WSSC 1969
 JV4513  PID         -  JV4513
 JV4513  STATE/COUNTY-  MD/MONTGOMERY
 JV4513  COUNTRY     -  US
 JV4513  USGS QUAD   -  SENECA (2016)
 JV4513
 JV4513                         *CURRENT SURVEY CONTROL
 JV4513  ______________________________________________________________________
 JV4513* NAD 83(1993) POSITION- 39 05 10.84226(N) 077 18 00.91309(W)   ADJUSTED
 JV4513* NAVD 88 ORTHO HEIGHT -   119.5   (meters)      392.    (feet) VERTCON3
 JV4513  ______________________________________________________________________
 JV4513  GEOID HEIGHT    -        -31.797 (meters)                     GEOID18
 JV4513  LAPLACE CORR    -          2.98  (seconds)                    DEFLEC18
 JV4513  HORZ ORDER      -  SECOND
 JV4513
 JV4513.The horizontal coordinates were established by classical geodetic methods
 JV4513.and adjusted by the National Geodetic Survey in November 1994.
 JV4513
 JV4513.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4513.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4513
 JV4513.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4513.GEOID18 height accuracy estimate available here.
 JV4513
 JV4513.Click photographs - Photos may exist for this station.
 JV4513
 JV4513.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4513
 JV4513. The following values were computed from the NAD 83(1993) position.
 JV4513
 JV4513;                    North         East     Units Scale Factor Converg.
 JV4513;SPC MD       -   157,634.200   374,022.924   MT  0.99995658   -0 11 18.4
 JV4513;SPC MD       -   517,171.54  1,227,106.88   sFT  0.99995658   -0 11 18.4
 JV4513;UTM  18      - 4,328,877.176   301,048.245   MT  1.00008740   -1 27 02.8
 JV4513
 JV4513!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4513!SPC MD       -   0.99998624  x   0.99995658  =   0.99994282
 JV4513!UTM  18      -   0.99998624  x   1.00008740  =   1.00007364
 JV4513
 JV4513:                Primary Azimuth Mark                     Grid Az
 JV4513:SPC MD       -  SENECA RM 3                              222 33 20.4
 JV4513:UTM  18      -  SENECA RM 3                              223 49 04.8
 JV4513
 JV4513_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0104828877(NAD 83)
 JV4513
 JV4513|---------------------------------------------------------------------|
 JV4513| PID    Reference Object                     Distance      Geod. Az  |
 JV4513|                                                           dddmmss.s |
 JV4513| JV4500 SENECA RM 3                         APPROX. 1.1 KM 2222202.0 |
 JV4513| JV4515 17212 WSSC 1969                     275.507 METERS 30338     |
 JV4513|---------------------------------------------------------------------|
 JV4513
 JV4513                          SUPERSEDED SURVEY CONTROL
 JV4513
 JV4513  NAD 83(1991)-  39 05 10.84160(N)    077 18 00.91386(W) AD(       ) 2
 JV4513  NAD 83(1986)-  39 05 10.84187(N)    077 18 00.92424(W) AD(       ) 2
 JV4513  NAD 27      -  39 05 10.45269(N)    077 18 01.97589(W) AD(       ) 2
 JV4513  NGVD 29 (07/19/86)  119.7    (m)          393.     (f) VERT ANG       
 JV4513
 JV4513.Superseded values are not recommended for survey control.
 JV4513
 JV4513.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4513.See file dsdata.pdf to determine how the superseded data were derived.
 JV4513
 JV4513_MARKER: I = METAL ROD
 JV4513_SETTING: 0 = UNSPECIFIED SETTING
 JV4513_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4513
 JV4513  HISTORY     - Date     Condition        Report By
 JV4513  HISTORY     - 1969     MONUMENTED       WSSC
 JV4513
 JV4513                          STATION DESCRIPTION
 JV4513
 JV4513'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4513'THE STATION IS ABOUT 1-1/4 MILES SOUTHWEST OF DARNSTOWN AND
 JV4513'2-1/2 MILES NORTHWEST OF TRAVILAH.
 JV4513'
 JV4513'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 112 AND
 JV4513'ESWORTHY ROAD GO EAST ON ESWORTHY ROAD FOR .2 MILE TO THE STATION
 JV4513'ON THE RIGHT.
 JV4513'
 JV4513'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4513'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 73.18 FEET SOUTHWEST
 JV4513'OF THE SOUTHWEST CORNER OF A CONCRETE PORCH ON HOUSE 14051,
 JV4513'36.78 FEET NORTH OF A NAIL IN THE TOP OF A FENCE POST, 42.98
 JV4513'FEET EAST OF A 5-INCH CEDAR TREE, 55.60 FEET NORTHEAST OF A
 JV4513'NAIL IN THE TOP OF A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4515 ***********************************************************************
 JV4515  DESIGNATION -  17212 WSSC 1969
 JV4515  PID         -  JV4515
 JV4515  STATE/COUNTY-  MD/MONTGOMERY
 JV4515  COUNTRY     -  US
 JV4515  USGS QUAD   -  SENECA (2016)
 JV4515
 JV4515                         *CURRENT SURVEY CONTROL
 JV4515  ______________________________________________________________________
 JV4515* NAD 83(1993) POSITION- 39 05 15.79149(N) 077 18 10.45684(W)   ADJUSTED
 JV4515* NAVD 88 ORTHO HEIGHT -   121.2   (meters)      398.    (feet) VERTCON3
 JV4515  ______________________________________________________________________
 JV4515  GEOID HEIGHT    -        -31.802 (meters)                     GEOID18
 JV4515  LAPLACE CORR    -          3.15  (seconds)                    DEFLEC18
 JV4515  HORZ ORDER      -  SECOND
 JV4515
 JV4515.The horizontal coordinates were established by classical geodetic methods
 JV4515.and adjusted by the National Geodetic Survey in November 1994.
 JV4515
 JV4515.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4515.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4515
 JV4515.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4515.GEOID18 height accuracy estimate available here.
 JV4515
 JV4515.Click photographs - Photos may exist for this station.
 JV4515
 JV4515.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4515
 JV4515. The following values were computed from the NAD 83(1993) position.
 JV4515
 JV4515;                    North         East     Units Scale Factor Converg.
 JV4515;SPC MD       -   157,787.575   373,794.071   MT  0.99995667   -0 11 24.4
 JV4515;SPC MD       -   517,674.74  1,226,356.05   sFT  0.99995667   -0 11 24.4
 JV4515;UTM  18      - 4,329,035.577   300,822.796   MT  1.00008851   -1 27 08.9
 JV4515
 JV4515!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4515!SPC MD       -   0.99998598  x   0.99995667  =   0.99994265
 JV4515!UTM  18      -   0.99998598  x   1.00008851  =   1.00007449
 JV4515
 JV4515_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0082229035(NAD 83)
 JV4515
 JV4515                          SUPERSEDED SURVEY CONTROL
 JV4515
 JV4515  NAD 83(1991)-  39 05 15.79085(N)    077 18 10.45760(W) AD(       ) 2
 JV4515  NAD 83(1986)-  39 05 15.79111(N)    077 18 10.46798(W) AD(       ) 2
 JV4515  NAD 27      -  39 05 15.40203(N)    077 18 11.51931(W) AD(       ) 2
 JV4515  NGVD 29 (07/19/86)  121.4    (m)          398.     (f) VERT ANG       
 JV4515
 JV4515.Superseded values are not recommended for survey control.
 JV4515
 JV4515.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4515.See file dsdata.pdf to determine how the superseded data were derived.
 JV4515
 JV4515_MARKER: I = METAL ROD
 JV4515_SETTING: 0 = UNSPECIFIED SETTING
 JV4515_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4515
 JV4515  HISTORY     - Date     Condition        Report By
 JV4515  HISTORY     - 1969     MONUMENTED       WSSC
 JV4515
 JV4515                          STATION DESCRIPTION
 JV4515
 JV4515'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4515'*THE STATION IS ABOUT 1-1/4 MILE SOUTHWEST OF DARNSTOWN AND
 JV4515'2-1/2 MILES NORTHWEST OF TRAVILAH.
 JV4515'
 JV4515'THE STATION IS LOCATED ON THE EAST SIDE OF ROUTE 112 AT THE
 JV4515'INTERSECTION OF ESWORTHY ROAD.
 JV4515'
 JV4515'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4515'AND IS 4 INCHES BELOW THE SURFACE.  IT IS IN THE CENTER OF A
 JV4515'GRASS ISLAND AND IS 8.69 FEET EAST OF POWER LINE POLE 613376,
 JV4515'48.94 FEET NORTHEAST OF POWER LINE POLE 45, 17.82 FEET EAST OF
 JV4515'THE EAST EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4510 ***********************************************************************
 JV4510  DESIGNATION -  17213 WSSC 1969
 JV4510  PID         -  JV4510
 JV4510  STATE/COUNTY-  MD/MONTGOMERY
 JV4510  COUNTRY     -  US
 JV4510  USGS QUAD   -  SENECA (2016)
 JV4510
 JV4510                         *CURRENT SURVEY CONTROL
 JV4510  ______________________________________________________________________
 JV4510* NAD 83(1993) POSITION- 39 03 41.96662(N) 077 16 49.75648(W)   ADJUSTED
 JV4510* NAVD 88 ORTHO HEIGHT -   104.4   (meters)      343.    (feet) VERTCON3
 JV4510  ______________________________________________________________________
 JV4510  GEOID HEIGHT    -        -31.752 (meters)                     GEOID18
 JV4510  LAPLACE CORR    -          2.42  (seconds)                    DEFLEC18
 JV4510  HORZ ORDER      -  SECOND
 JV4510
 JV4510.The horizontal coordinates were established by classical geodetic methods
 JV4510.and adjusted by the National Geodetic Survey in November 1994.
 JV4510
 JV4510.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4510.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4510
 JV4510.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4510.GEOID18 height accuracy estimate available here.
 JV4510
 JV4510.Click photographs - Photos may exist for this station.
 JV4510
 JV4510.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4510
 JV4510. The following values were computed from the NAD 83(1993) position.
 JV4510
 JV4510;                    North         East     Units Scale Factor Converg.
 JV4510;SPC MD       -   154,888.145   375,724.571   MT  0.99995509   -0 10 33.8
 JV4510;SPC MD       -   508,162.19  1,232,689.70   sFT  0.99995509   -0 10 33.8
 JV4510;UTM  18      - 4,326,093.958   302,689.214   MT  1.00007940   -1 26 15.1
 JV4510
 JV4510!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4510!SPC MD       -   0.99998861  x   0.99995509  =   0.99994370
 JV4510!UTM  18      -   0.99998861  x   1.00007940  =   1.00006801
 JV4510
 JV4510:                Primary Azimuth Mark                     Grid Az
 JV4510:SPC MD       -  SENECA RM 3                              307 27 33.7
 JV4510:UTM  18      -  SENECA RM 3                              308 43 15.0
 JV4510
 JV4510_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0268926093(NAD 83)
 JV4510
 JV4510|---------------------------------------------------------------------|
 JV4510| PID    Reference Object                     Distance      Geod. Az  |
 JV4510|                                                           dddmmss.s |
 JV4510| JV4511 17214 WSSC 1969                     163.406 METERS 23315     |
 JV4510| JV4500 SENECA RM 3                         APPROX. 3.1 KM 3071659.9 |
 JV4510|---------------------------------------------------------------------|
 JV4510
 JV4510                          SUPERSEDED SURVEY CONTROL
 JV4510
 JV4510  NAD 83(1991)-  39 03 41.96584(N)    077 16 49.75751(W) AD(       ) 2
 JV4510  NAD 83(1986)-  39 03 41.96619(N)    077 16 49.76774(W) AD(       ) 2
 JV4510  NAD 27      -  39 03 41.57549(N)    077 16 50.82205(W) AD(       ) 2
 JV4510  NGVD 29 (07/19/86)  104.6    (m)          343.     (f) VERT ANG       
 JV4510
 JV4510.Superseded values are not recommended for survey control.
 JV4510
 JV4510.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4510.See file dsdata.pdf to determine how the superseded data were derived.
 JV4510
 JV4510_MARKER: I = METAL ROD
 JV4510_SETTING: 0 = UNSPECIFIED SETTING
 JV4510_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4510
 JV4510  HISTORY     - Date     Condition        Report By
 JV4510  HISTORY     - 1969     MONUMENTED       WSSC
 JV4510
 JV4510                          STATION DESCRIPTION
 JV4510
 JV4510'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4510'*THE STATION IS ABOUT 1-1/4 MILE SOUTHWEST OF TRAVILAH AND 3
 JV4510'MILES SOUTHEAST OF DARNSTOWN.
 JV4510'
 JV4510'TO REACH THE STATION FROM RIVER ROAD (ROUTE 190) AND TRAVILAH
 JV4510'ROAD, GO NORTHEAST ON TRAVILAH ROAD FOR 650 FEET TO THE STATION
 JV4510'ON A HIGH BANK ON THE RIGHT.
 JV4510'
 JV4510'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4510'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 63.94 FEET NORTH OF
 JV4510'POWER LINE POLE 129, 43.23 FEET SOUTH OF A 12-INCH CEDAR TREE,
 JV4510'20.51 FEET SOUTHWEST OF A TACK IN THE TOP OF A FENCE POST,
 JV4510'19.48 FEET NORTHWEST OF A TACK IN THE TOP OF A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4511 ***********************************************************************
 JV4511  DESIGNATION -  17214 WSSC 1969
 JV4511  PID         -  JV4511
 JV4511  STATE/COUNTY-  MD/MONTGOMERY
 JV4511  COUNTRY     -  US
 JV4511  USGS QUAD   -  SENECA (2016)
 JV4511
 JV4511                         *CURRENT SURVEY CONTROL
 JV4511  ______________________________________________________________________
 JV4511* NAD 83(1993) POSITION- 39 03 38.79607(N) 077 16 55.20220(W)   ADJUSTED
 JV4511* NAVD 88 ORTHO HEIGHT -    99.2   (meters)      325.    (feet) VERTCON3
 JV4511  ______________________________________________________________________
 JV4511  GEOID HEIGHT    -        -31.754 (meters)                     GEOID18
 JV4511  LAPLACE CORR    -          2.47  (seconds)                    DEFLEC18
 JV4511  HORZ ORDER      -  SECOND
 JV4511
 JV4511.The horizontal coordinates were established by classical geodetic methods
 JV4511.and adjusted by the National Geodetic Survey in November 1994.
 JV4511
 JV4511.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4511.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4511
 JV4511.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4511.GEOID18 height accuracy estimate available here.
 JV4511
 JV4511.Click photographs - Photos may exist for this station.
 JV4511
 JV4511.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4511
 JV4511. The following values were computed from the NAD 83(1993) position.
 JV4511
 JV4511;                    North         East     Units Scale Factor Converg.
 JV4511;SPC MD       -   154,790.780   375,593.350   MT  0.99995504   -0 10 37.2
 JV4511;SPC MD       -   507,842.75  1,232,259.18   sFT  0.99995504   -0 10 37.2
 JV4511;UTM  18      - 4,325,999.494   302,555.864   MT  1.00008005   -1 26 18.4
 JV4511
 JV4511!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4511!SPC MD       -   0.99998942  x   0.99995504  =   0.99994446
 JV4511!UTM  18      -   0.99998942  x   1.00008005  =   1.00006947
 JV4511
 JV4511_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0255525999(NAD 83)
 JV4511
 JV4511                          SUPERSEDED SURVEY CONTROL
 JV4511
 JV4511  NAD 83(1991)-  39 03 38.79530(N)    077 16 55.20324(W) AD(       ) 2
 JV4511  NAD 83(1986)-  39 03 38.79564(N)    077 16 55.21346(W) AD(       ) 2
 JV4511  NAD 27      -  39 03 38.40491(N)    077 16 56.26762(W) AD(       ) 2
 JV4511  NGVD 29 (07/19/86)   99.4    (m)          326.     (f) VERT ANG       
 JV4511
 JV4511.Superseded values are not recommended for survey control.
 JV4511
 JV4511.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4511.See file dsdata.pdf to determine how the superseded data were derived.
 JV4511
 JV4511_MARKER: I = METAL ROD
 JV4511_SETTING: 0 = UNSPECIFIED SETTING
 JV4511_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4511_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4511+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV4511
 JV4511  HISTORY     - Date     Condition        Report By
 JV4511  HISTORY     - 1969     MONUMENTED       WSSC
 JV4511  HISTORY     - 20031222 GOOD             DEWDAV
 JV4511  HISTORY     - 20050405 GOOD             USPSQD
 JV4511
 JV4511                          STATION DESCRIPTION
 JV4511
 JV4511'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4511'THE STATION IS ABOUT 1-1/4 MILES SOUTHWEST OF TRAVILAH AND 3
 JV4511'MILES SOUTHEAST OF DARNSTOWN.
 JV4511'
 JV4511'THE STATION IS LOCATED ON THE NORTHEAST CORNER OF RIVER ROAD
 JV4511'(ROUTE 190) AND TRAVILAH ROAD.
 JV4511'
 JV4511'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4511'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 80.65 FEET NORTH OF
 JV4511'POWER LINE POLE M-129, 7.96 FEET SOUTH OF POWER LINE POLE 128
 JV4511'1/2, 19.08 SOUTHWEST OF A NAIL AND DISK IN THE TOP OF A FENCE
 JV4511'POST AND IS 48.22 FEET EAST OF A X CUT IN THE CENTER OF A
 JV4511'CONCRETE HEADWALL.
 JV4511
 JV4511                          STATION RECOVERY (2003)
 JV4511
 JV4511'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (KEC)
 JV4511'RECOVERED IN GOOD CONDITION.
 JV4511
 JV4511                          STATION RECOVERY (2005)
 JV4511
 JV4511'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV4511'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4231 ***********************************************************************
 JV4231  DESIGNATION -  17215 WSSC 1969
 JV4231  PID         -  JV4231
 JV4231  STATE/COUNTY-  MD/MONTGOMERY
 JV4231  COUNTRY     -  US
 JV4231  USGS QUAD   -  DAMASCUS (2016)
 JV4231
 JV4231                         *CURRENT SURVEY CONTROL
 JV4231  ______________________________________________________________________
 JV4231* NAD 83(1993) POSITION- 39 15 11.89696(N) 077 08 18.34685(W)   ADJUSTED
 JV4231* NAVD 88 ORTHO HEIGHT -   194.9   (meters)      639.    (feet) VERTCON3
 JV4231  ______________________________________________________________________
 JV4231  GEOID HEIGHT    -        -31.792 (meters)                     GEOID18
 JV4231  LAPLACE CORR    -          0.04  (seconds)                    DEFLEC18
 JV4231  HORZ ORDER      -  SECOND
 JV4231
 JV4231.The horizontal coordinates were established by classical geodetic methods
 JV4231.and adjusted by the National Geodetic Survey in November 1994.
 JV4231
 JV4231.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4231.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4231
 JV4231.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4231.GEOID18 height accuracy estimate available here.
 JV4231
 JV4231.Click photographs - Photos may exist for this station.
 JV4231
 JV4231.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4231
 JV4231. The following values were computed from the NAD 83(1993) position.
 JV4231
 JV4231;                    North         East     Units Scale Factor Converg.
 JV4231;SPC MD       -   176,135.506   388,051.554   MT  0.99997150   -0 05 12.8
 JV4231;SPC MD       -   577,871.24  1,273,132.47   sFT  0.99997150   -0 05 12.8
 JV4231;UTM  18      - 4,347,066.019   315,483.040   MT  1.00001922   -1 21 12.5
 JV4231
 JV4231!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4231!SPC MD       -   0.99997441  x   0.99997150  =   0.99994591
 JV4231!UTM  18      -   0.99997441  x   1.00001922  =   0.99999363
 JV4231
 JV4231_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1548347066(NAD 83)
 JV4231
 JV4231                          SUPERSEDED SURVEY CONTROL
 JV4231
 JV4231  NAD 83(1991)-  39 15 11.89685(N)    077 08 18.34724(W) AD(       ) 2
 JV4231  NAD 83(1986)-  39 15 11.89693(N)    077 08 18.35740(W) AD(       ) 2
 JV4231  NAD 27      -  39 15 11.51645(N)    077 08 19.42494(W) AD(       ) 2
 JV4231  NGVD 29 (07/19/86)  195.1    (m)          640.     (f) VERT ANG       
 JV4231
 JV4231.Superseded values are not recommended for survey control.
 JV4231
 JV4231.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4231.See file dsdata.pdf to determine how the superseded data were derived.
 JV4231
 JV4231_MARKER: I = METAL ROD
 JV4231_SETTING: 0 = UNSPECIFIED SETTING
 JV4231_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4231
 JV4231  HISTORY     - Date     Condition        Report By
 JV4231  HISTORY     - 1969     MONUMENTED       WSSC
 JV4231
 JV4231                          STATION DESCRIPTION
 JV4231
 JV4231'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4231'THE STATION IS ABOUT 3 MILES EAST OF WOODFIELD AND 3 MILES
 JV4231'NORTH OF LAYTONSVILLE.
 JV4231'
 JV4231'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 116 AND
 JV4231'HIPSLEY MILL ROAD, GO NORTH ON HIPSLEY MILL ROAD FOR .1 MILES
 JV4231'TO THE STATION ON THE LEFT.
 JV4231'
 JV4231'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4231'CENTER AND PROJECTS 3 INCHES ABOVE THE SURFACE.  IT IS 15.20
 JV4231'FEET SOUTH OF POLE NO. F-33901, 20.34 FEET NORTH OF A 30-INCH
 JV4231'TWIN OAK, AND 5.72 FEET SOUTHWEST OF A 10-INCH HICKORY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4254 ***********************************************************************
 JV4254  DESIGNATION -  17216 WSSC 1969
 JV4254  PID         -  JV4254
 JV4254  STATE/COUNTY-  MD/MONTGOMERY
 JV4254  COUNTRY     -  US
 JV4254  USGS QUAD   -  SANDY SPRING (2016)
 JV4254
 JV4254                         *CURRENT SURVEY CONTROL
 JV4254  ______________________________________________________________________
 JV4254* NAD 83(1991) POSITION- 39 12 16.77887(N) 077 01 54.08665(W)   ADJUSTED
 JV4254* NAVD 88 ORTHO HEIGHT -   135.6   (meters)      445.    (feet) VERTCON3
 JV4254  ______________________________________________________________________
 JV4254  GEOID HEIGHT    -        -31.873 (meters)                     GEOID18
 JV4254  LAPLACE CORR    -         -3.05  (seconds)                    DEFLEC18
 JV4254  HORZ ORDER      -  SECOND
 JV4254
 JV4254.The horizontal coordinates were established by classical geodetic methods
 JV4254.and adjusted by the National Geodetic Survey in January 1992.
 JV4254
 JV4254.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4254.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4254
 JV4254.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4254.GEOID18 height accuracy estimate available here.
 JV4254
 JV4254.Click photographs - Photos may exist for this station.
 JV4254
 JV4254.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4254
 JV4254. The following values were computed from the NAD 83(1991) position.
 JV4254
 JV4254;                    North         East     Units Scale Factor Converg.
 JV4254;SPC MD       -   170,726.649   397,262.764   MT  0.99996628   -0 01 11.6
 JV4254;SPC MD       -   560,125.68  1,303,352.92   sFT  0.99996628   -0 01 11.6
 JV4254;UTM  18      - 4,341,454.863   324,572.810   MT  0.99997894   -1 17 04.4
 JV4254
 JV4254!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4254!SPC MD       -   0.99998373  x   0.99996628  =   0.99995001
 JV4254!UTM  18      -   0.99998373  x   0.99997894  =   0.99996267
 JV4254
 JV4254_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2457241454(NAD 83)
 JV4254
 JV4254|---------------------------------------------------------------------|
 JV4254| PID    Reference Object                     Distance      Geod. Az  |
 JV4254|                                                           dddmmss.s |
 JV4254| JV6588 TRIADEL RESET                       395.510 METERS 09031     |
 JV4254| JV7046 TRIADEL AZ MK                        86.970 METERS 30427     |
 JV4254|---------------------------------------------------------------------|
 JV4254
 JV4254                          SUPERSEDED SURVEY CONTROL
 JV4254
 JV4254  NAD 83(1986)-  39 12 16.77858(N)    077 01 54.09713(W) AD(       ) 2
 JV4254  NAD 27      -  39 12 16.39437(N)    077 01 55.17746(W) AD(       ) 2
 JV4254  NGVD 29 (07/19/86)  135.8    (m)          446.     (f) VERT ANG       
 JV4254
 JV4254.Superseded values are not recommended for survey control.
 JV4254
 JV4254.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4254.See file dsdata.pdf to determine how the superseded data were derived.
 JV4254
 JV4254_MARKER: I = METAL ROD
 JV4254_SETTING: 0 = UNSPECIFIED SETTING
 JV4254_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4254
 JV4254  HISTORY     - Date     Condition        Report By
 JV4254  HISTORY     - 1969     MONUMENTED       WSSC
 JV4254
 JV4254                          STATION DESCRIPTION
 JV4254
 JV4254'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4254'THE STATION IS ABOUT 3/4 MILE NORTH OF BRIGHTON AND 2 MILES
 JV4254'SOUTHEAST OF SUNSHINE.
 JV4254'
 JV4254'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 116 AND
 JV4254'EDMONSTON ROAD GO SOUTHWEST ON ROUTE 116 FOR .25 MILE TO THE
 JV4254'STATION ON THE LEFT.
 JV4254'
 JV4254'THE STATION IS MARKED BY A CONCRETE MONUMENT WITH AN IRON ROD
 JV4254'CENTER AND IS 1 INCH BELOW THE SURFACE.  IT IS 42.55 FEET WEST
 JV4254'OF POWER LINE POLE M-457, 8.80 FEET NORTHEAST OF AN 8-INCH OAK
 JV4254'TREE, 29.96 FEET SOUTHEAST OF A 60-INCH OAK TREE, 40.05 FEET
 JV4254'SOUTHWEST OF A 60-INCH ASH AND IS 9.55 FEET SOUTH OF THE SOUTH
 JV4254'EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4431 ***********************************************************************
 JV4431  DESIGNATION -  17217 WSSC 1969
 JV4431  PID         -  JV4431
 JV4431  STATE/COUNTY-  MD/MONTGOMERY
 JV4431  COUNTRY     -  US
 JV4431  USGS QUAD   -  GAITHERSBURG (2016)
 JV4431
 JV4431                         *CURRENT SURVEY CONTROL
 JV4431  ______________________________________________________________________
 JV4431* NAD 83(1991) POSITION- 39 11 05.19467(N) 077 09 02.92596(W)   ADJUSTED
 JV4431* NAVD 88 ORTHO HEIGHT -   175.2   (meters)      575.    (feet) VERTCON3
 JV4431  ______________________________________________________________________
 JV4431  GEOID HEIGHT    -        -31.753 (meters)                     GEOID18
 JV4431  LAPLACE CORR    -         -0.15  (seconds)                    DEFLEC18
 JV4431  HORZ ORDER      -  SECOND
 JV4431
 JV4431.The horizontal coordinates were established by classical geodetic methods
 JV4431.and adjusted by the National Geodetic Survey in January 1992.
 JV4431
 JV4431.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4431.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4431
 JV4431.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4431.GEOID18 height accuracy estimate available here.
 JV4431
 JV4431.Click photographs - Photos may exist for this station.
 JV4431
 JV4431.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4431
 JV4431. The following values were computed from the NAD 83(1991) position.
 JV4431
 JV4431;                    North         East     Units Scale Factor Converg.
 JV4431;SPC MD       -   168,529.453   386,970.150   MT  0.99996435   -0 05 40.8
 JV4431;SPC MD       -   552,917.05  1,269,584.57   sFT  0.99996435   -0 05 40.8
 JV4431;UTM  18      - 4,339,485.296   314,233.833   MT  1.00002492   -1 21 33.6
 JV4431
 JV4431!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4431!SPC MD       -   0.99997750  x   0.99996435  =   0.99994185
 JV4431!UTM  18      -   0.99997750  x   1.00002492  =   1.00000241
 JV4431
 JV4431_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1423339485(NAD 83)
 JV4431
 JV4431                          SUPERSEDED SURVEY CONTROL
 JV4431
 JV4431  NAD 83(1986)-  39 11 05.19449(N)    077 09 02.93596(W) AD(       ) 2
 JV4431  NAD 27      -  39 11 04.80997(N)    077 09 04.00214(W) AD(       ) 2
 JV4431  NGVD 29 (07/19/86)  175.4    (m)          575.     (f) VERT ANG       
 JV4431
 JV4431.Superseded values are not recommended for survey control.
 JV4431
 JV4431.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4431.See file dsdata.pdf to determine how the superseded data were derived.
 JV4431
 JV4431_MARKER: I = METAL ROD
 JV4431_SETTING: 0 = UNSPECIFIED SETTING
 JV4431_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4431
 JV4431  HISTORY     - Date     Condition        Report By
 JV4431  HISTORY     - 1969     MONUMENTED       WSSC
 JV4431
 JV4431                          STATION DESCRIPTION
 JV4431
 JV4431'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4431'THE STATION IS ABOUT 3 MILES NORTH OF REDLAND AND 1-1/2 MILES
 JV4431'WEST OF CLAYSVILLE.
 JV4431'
 JV4431'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 115 AND
 JV4431'ROUTE 124, GO NORTH ON ROUTE 124 FOR 2 MILES TO A ONE STORY
 JV4431'WHITE HOUSE AND THE STATION IS ON THE LEFT.
 JV4431'
 JV4431'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4431'AND IS 2 INCHES BELOW THE SURFACE.  IT IS ABOUT 200 FEET SOUTH OF
 JV4431'PEPCO POWER LINE, 34.33 FEET NORTH OF PEPCO POLE NO. 69708,
 JV4431'40.17 FEET NORTHWEST OF C AND P POLE NO. 159, 52.72 FEET
 JV4431'SOUTHEAST OF THE NORTHEAST CORNER OF A WHITE HOUSE AND IS AT
 JV4431'THE SOUTH END OF A HEDGE ROW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4878 ***********************************************************************
 HV4878  DESIGNATION -  17218 WSSC 1969
 HV4878  PID         -  HV4878
 HV4878  STATE/COUNTY-  MD/MONTGOMERY
 HV4878  COUNTRY     -  US
 HV4878  USGS QUAD   -  FALLS CHURCH (2019)
 HV4878
 HV4878                         *CURRENT SURVEY CONTROL
 HV4878  ______________________________________________________________________
 HV4878* NAD 83(1993) POSITION- 38 58 40.56391(N) 077 07 49.45113(W)   ADJUSTED
 HV4878* NAVD 88 ORTHO HEIGHT -   101.6   (meters)      333.    (feet) VERTCON3
 HV4878  ______________________________________________________________________
 HV4878  GEOID HEIGHT    -        -31.838 (meters)                     GEOID18
 HV4878  LAPLACE CORR    -         -1.93  (seconds)                    DEFLEC18
 HV4878  HORZ ORDER      -  SECOND
 HV4878
 HV4878.The horizontal coordinates were established by classical geodetic methods
 HV4878.and adjusted by the National Geodetic Survey in November 1994.
 HV4878
 HV4878.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4878.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4878
 HV4878.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4878.GEOID18 height accuracy estimate available here.
 HV4878
 HV4878.Click photographs - Photos may exist for this station.
 HV4878
 HV4878.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4878
 HV4878. The following values were computed from the NAD 83(1993) position.
 HV4878
 HV4878;                    North         East     Units Scale Factor Converg.
 HV4878;SPC MD       -   145,564.780   388,700.694   MT  0.99995143   -0 04 54.6
 HV4878;SPC MD       -   477,573.78  1,275,262.19   sFT  0.99995143   -0 04 54.6
 HV4878;UTM  18      - 4,316,486.585   315,458.407   MT  1.00001936   -1 20 25.6
 HV4878
 HV4878!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4878!SPC MD       -   0.99998906  x   0.99995143  =   0.99994049
 HV4878!UTM  18      -   0.99998906  x   1.00001936  =   1.00000842
 HV4878
 HV4878:                Primary Azimuth Mark                     Grid Az
 HV4878:SPC MD       -  17219 WSSC 1969                          313 35 10.0
 HV4878:UTM  18      -  17219 WSSC 1969                          314 50 41.0
 HV4878
 HV4878_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1545816486(NAD 83)
 HV4878
 HV4878|---------------------------------------------------------------------|
 HV4878| PID    Reference Object                     Distance      Geod. Az  |
 HV4878|                                                           dddmmss.s |
 HV4878| HV4877 17500 WSSC 1969                     111.999 METERS 12409     |
 HV4878| HV4463 BETHESDA TV STA WDCA MAST           APPROX. 2.7 KM 1250452.1 |
 HV4878| HV4879 17219 WSSC 1969                     APPROX. 0.9 KM 3133015.4 |
 HV4878|---------------------------------------------------------------------|
 HV4878
 HV4878                          SUPERSEDED SURVEY CONTROL
 HV4878
 HV4878  NAD 83(1991)-  38 58 40.56325(N)    077 07 49.45230(W) AD(       ) 2
 HV4878  NAD 83(1986)-  38 58 40.56312(N)    077 07 49.46209(W) AD(       ) 2
 HV4878  NAD 27      -  38 58 40.16808(N)    077 07 50.53147(W) AD(       ) 2
 HV4878  NGVD 29 (07/19/86)  101.8    (m)          334.     (f) VERT ANG       
 HV4878
 HV4878.Superseded values are not recommended for survey control.
 HV4878
 HV4878.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4878.See file dsdata.pdf to determine how the superseded data were derived.
 HV4878
 HV4878_MARKER: I = METAL ROD
 HV4878_SETTING: 0 = UNSPECIFIED SETTING
 HV4878_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4878
 HV4878  HISTORY     - Date     Condition        Report By
 HV4878  HISTORY     - 1969     MONUMENTED       WSSC
 HV4878  HISTORY     - 20020310 MARK NOT FOUND   USPSQD
 HV4878
 HV4878                          STATION DESCRIPTION
 HV4878
 HV4878'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4878'THE STATION IS ABOUT 1-1/2 MILES NORTHEAST OF CABIN JOHN AND
 HV4878'1 MILE NORTH OF GLEN ECHO HEIGHTS.
 HV4878'
 HV4878'TO REACH THE STATION FROM THE INTERSECTION OF BRAEBURN PARKWAY
 HV4878'AND RIVER ROAD (ROUTE 190), GO EAST ON RIVER ROAD FOR .25 MILE
 HV4878'TO THE STATION ON THE LEFT.
 HV4878'
 HV4878'THE STATION MARK IS A CONCRETE MONUMENT WITH A IRON ROD CENTER
 HV4878'AND IS 1 INCH BELOW THE SURFACE.  IT IS ON THE TOP OF A HIGH CUT
 HV4878'BANK AND IS 9.28 FEET SOUTH OF POLE 611536, 17.02 FEET NORTH OF
 HV4878'A 6-INCH TREE, 40.85 FEET WEST OF A 3-INCH MAPLE.
 HV4878
 HV4878                          STATION RECOVERY (2002)
 HV4878
 HV4878'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV4878'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4879 ***********************************************************************
 HV4879  DESIGNATION -  17219 WSSC 1969
 HV4879  PID         -  HV4879
 HV4879  STATE/COUNTY-  MD/MONTGOMERY
 HV4879  COUNTRY     -  US
 HV4879  USGS QUAD   -  FALLS CHURCH (2019)
 HV4879
 HV4879                         *CURRENT SURVEY CONTROL
 HV4879  ______________________________________________________________________
 HV4879* NAD 83(1993) POSITION- 38 59 00.06207(N) 077 08 15.77362(W)   ADJUSTED
 HV4879* NAVD 88 ORTHO HEIGHT -    87.3   (meters)      286.    (feet) VERTCON3
 HV4879  ______________________________________________________________________
 HV4879  GEOID HEIGHT    -        -31.824 (meters)                     GEOID18
 HV4879  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 HV4879  HORZ ORDER      -  SECOND
 HV4879
 HV4879.The horizontal coordinates were established by classical geodetic methods
 HV4879.and adjusted by the National Geodetic Survey in November 1994.
 HV4879
 HV4879.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4879.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4879
 HV4879.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4879.GEOID18 height accuracy estimate available here.
 HV4879
 HV4879.Click photographs - Photos may exist for this station.
 HV4879
 HV4879.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4879
 HV4879. The following values were computed from the NAD 83(1993) position.
 HV4879
 HV4879;                    North         East     Units Scale Factor Converg.
 HV4879;SPC MD       -   146,166.956   388,068.041   MT  0.99995160   -0 05 11.2
 HV4879;SPC MD       -   479,549.42  1,273,186.56   sFT  0.99995160   -0 05 11.2
 HV4879;UTM  18      - 4,317,102.556   314,839.091   MT  1.00002218   -1 20 42.7
 HV4879
 HV4879!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4879!SPC MD       -   0.99999130  x   0.99995160  =   0.99994290
 HV4879!UTM  18      -   0.99999130  x   1.00002218  =   1.00001348
 HV4879
 HV4879_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1483917102(NAD 83)
 HV4879
 HV4879                          SUPERSEDED SURVEY CONTROL
 HV4879
 HV4879  NAD 83(1991)-  38 59 00.06142(N)    077 08 15.77478(W) AD(       ) 2
 HV4879  NAD 83(1986)-  38 59 00.06131(N)    077 08 15.78454(W) AD(       ) 2
 HV4879  NAD 27      -  38 58 59.66591(N)    077 08 16.85389(W) AD(       ) 2
 HV4879  NGVD 29 (07/19/86)   87.5    (m)          287.     (f) VERT ANG       
 HV4879
 HV4879.Superseded values are not recommended for survey control.
 HV4879
 HV4879.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4879.See file dsdata.pdf to determine how the superseded data were derived.
 HV4879
 HV4879_MARKER: I = METAL ROD
 HV4879_SETTING: 0 = UNSPECIFIED SETTING
 HV4879_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4879
 HV4879  HISTORY     - Date     Condition        Report By
 HV4879  HISTORY     - 1969     MONUMENTED       WSSC
 HV4879
 HV4879                          STATION DESCRIPTION
 HV4879
 HV4879'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4879'THE STATION IS ABOUT 1-1/2 MILES NORTHWEST OF GLEN ECHO HEIGHTS
 HV4879'AND 1-1/2 MILES NORTHEAST OF CABIN JOHN.
 HV4879'
 HV4879'THE STATION IS LOCATED IN THE GRASS ISLAND ON THE SOUTHEAST
 HV4879'CORNER OF RIVER ROAD (ROUTE 190) AND WILSON LANE.
 HV4879'
 HV4879'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4879'AND IS FLUSH WITH THE SURFACE.  IT IS 14.80 FEET WEST OF POLE
 HV4879'622806, 23.68 FEET SOUTH OF THE SOUTH EDGE OF THE CONCRETE CURB,
 HV4879'AND 9.63 FEET EAST OF THE EAST EDGE OF THE CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4401 ***********************************************************************
 JV4401  DESIGNATION -  17220 WSSC 1969
 JV4401  PID         -  JV4401
 JV4401  STATE/COUNTY-  MD/MONTGOMERY
 JV4401  COUNTRY     -  US
 JV4401  USGS QUAD   -  ROCKVILLE (2016)
 JV4401
 JV4401                         *CURRENT SURVEY CONTROL
 JV4401  ______________________________________________________________________
 JV4401* NAD 83(1993) POSITION- 39 06 55.90855(N) 077 12 59.04205(W)   ADJUSTED
 JV4401* NAVD 88 ORTHO HEIGHT -   128.6   (meters)      422.    (feet) VERTCON3
 JV4401  ______________________________________________________________________
 JV4401  GEOID HEIGHT    -        -31.728 (meters)                     GEOID18
 JV4401  LAPLACE CORR    -          1.31  (seconds)                    DEFLEC18
 JV4401  HORZ ORDER      -  SECOND
 JV4401
 JV4401.The horizontal coordinates were established by classical geodetic methods
 JV4401.and adjusted by the National Geodetic Survey in November 1994.
 JV4401
 JV4401.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4401.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4401
 JV4401.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4401.GEOID18 height accuracy estimate available here.
 JV4401
 JV4401.Click photographs - Photos may exist for this station.
 JV4401
 JV4401.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4401
 JV4401. The following values were computed from the NAD 83(1993) position.
 JV4401
 JV4401;                    North         East     Units Scale Factor Converg.
 JV4401;SPC MD       -   160,853.576   381,285.313   MT  0.99995858   -0 08 09.0
 JV4401;SPC MD       -   527,733.77  1,250,933.56   sFT  0.99995858   -0 08 09.0
 JV4401;UTM  18      - 4,331,936.087   308,380.631   MT  1.00005213   -1 23 55.4
 JV4401
 JV4401!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4401!SPC MD       -   0.99998480  x   0.99995858  =   0.99994338
 JV4401!UTM  18      -   0.99998480  x   1.00005213  =   1.00003693
 JV4401
 JV4401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0838031936(NAD 83)
 JV4401
 JV4401                          SUPERSEDED SURVEY CONTROL
 JV4401
 JV4401  NAD 83(1991)-  39 06 55.90815(N)    077 12 59.04247(W) AD(       ) 2
 JV4401  NAD 83(1986)-  39 06 55.90822(N)    077 12 59.05243(W) AD(       ) 2
 JV4401  NAD 27      -  39 06 55.52024(N)    077 13 00.11243(W) AD(       ) 2
 JV4401  NGVD 29 (07/19/86)  128.8    (m)          423.     (f) VERT ANG       
 JV4401
 JV4401.Superseded values are not recommended for survey control.
 JV4401
 JV4401.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4401.See file dsdata.pdf to determine how the superseded data were derived.
 JV4401
 JV4401_MARKER: I = METAL ROD
 JV4401_SETTING: 0 = UNSPECIFIED SETTING
 JV4401_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4401
 JV4401  HISTORY     - Date     Condition        Report By
 JV4401  HISTORY     - 1969     MONUMENTED       WSSC
 JV4401
 JV4401                          STATION DESCRIPTION
 JV4401
 JV4401'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4401'THE STATION IS ABOUT 2-1/2 MILES SOUTH OF GAITHERSBURG AND 3-1/2
 JV4401'MILES SOUTHWEST OF WASHINGTON GROVE.
 JV4401'
 JV4401'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 355 AND
 JV4401'DIAMOND AVENUE IN GAITHERSBURG, GO SOUTH ON DIAMOND AVENUE FOR .2
 JV4401'MILES TO THE JUNCTION OF WATER STREET.  TURN LEFT AND GO SOUTHWEST
 JV4401'FOR 1.95 MILES TO THE STATION ON THE RIGHT.
 JV4401'
 JV4401'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4401'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 36.17 FEET WEST OF A
 JV4401'REFERENCE MONUMENT, 52.87 FEET SOUTHWEST OF THE SOUTHEAST CORNER
 JV4401'OF A WIRE FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4445 ***********************************************************************
 JV4445  DESIGNATION -  17221 WSSC 1969
 JV4445  PID         -  JV4445
 JV4445  STATE/COUNTY-  MD/MONTGOMERY
 JV4445  COUNTRY     -  US
 JV4445  USGS QUAD   -  GAITHERSBURG (2016)
 JV4445
 JV4445                         *CURRENT SURVEY CONTROL
 JV4445  ______________________________________________________________________
 JV4445* NAD 83(1993) POSITION- 39 07 51.85268(N) 077 12 23.89368(W)   ADJUSTED
 JV4445* NAVD 88 ORTHO HEIGHT -   136.1   (meters)      447.    (feet) VERTCON3
 JV4445  ______________________________________________________________________
 JV4445  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 JV4445  LAPLACE CORR    -          1.18  (seconds)                    DEFLEC18
 JV4445  HORZ ORDER      -  SECOND
 JV4445
 JV4445.The horizontal coordinates were established by classical geodetic methods
 JV4445.and adjusted by the National Geodetic Survey in November 1994.
 JV4445
 JV4445.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4445.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4445
 JV4445.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4445.GEOID18 height accuracy estimate available here.
 JV4445
 JV4445.Click photographs - Photos may exist for this station.
 JV4445
 JV4445.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4445
 JV4445. The following values were computed from the NAD 83(1993) position.
 JV4445
 JV4445;                    North         East     Units Scale Factor Converg.
 JV4445;SPC MD       -   162,576.766   382,133.575   MT  0.99995974   -0 07 46.9
 JV4445;SPC MD       -   533,387.27  1,253,716.57   sFT  0.99995974   -0 07 46.9
 JV4445;UTM  18      - 4,333,640.314   309,266.753   MT  1.00004796   -1 23 34.9
 JV4445
 JV4445!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4445!SPC MD       -   0.99998363  x   0.99995974  =   0.99994337
 JV4445!UTM  18      -   0.99998363  x   1.00004796  =   1.00003159
 JV4445
 JV4445:                Primary Azimuth Mark                     Grid Az
 JV4445:SPC MD       -  WASHINGTONIAN RM 2 1969                  160 34 16.4
 JV4445:UTM  18      -  WASHINGTONIAN RM 2 1969                  161 50 04.4
 JV4445
 JV4445_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0926633640(NAD 83)
 JV4445
 JV4445|---------------------------------------------------------------------|
 JV4445| PID    Reference Object                     Distance      Geod. Az  |
 JV4445|                                                           dddmmss.s |
 JV4445| JV4399 WASHINGTONIAN RM 2 1969             APPROX. 1.9 KM 1602629.5 |
 JV4445| JV4446 17222 WSSC 1969                     406.924 METERS 3371503.0 |
 JV4445|---------------------------------------------------------------------|
 JV4445
 JV4445                          SUPERSEDED SURVEY CONTROL
 JV4445
 JV4445  NAD 83(1991)-  39 07 51.85225(N)    077 12 23.89405(W) AD(       ) 2
 JV4445  NAD 83(1986)-  39 07 51.85233(N)    077 12 23.90400(W) AD(       ) 2
 JV4445  NAD 27      -  39 07 51.46512(N)    077 12 24.96496(W) AD(       ) 2
 JV4445  NGVD 29 (07/19/86)  136.3    (m)          447.     (f) VERT ANG       
 JV4445
 JV4445.Superseded values are not recommended for survey control.
 JV4445
 JV4445.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4445.See file dsdata.pdf to determine how the superseded data were derived.
 JV4445
 JV4445_MARKER: B = BOLT
 JV4445_SETTING: 0 = UNSPECIFIED SETTING
 JV4445_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4445
 JV4445  HISTORY     - Date     Condition        Report By
 JV4445  HISTORY     - 1969     MONUMENTED       WSSC
 JV4445
 JV4445                          STATION DESCRIPTION
 JV4445
 JV4445'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4445'THE STATION IS ABOUT 1 MILE SOUTH OF GAITHERSBURG, AND 1-1/2
 JV4445'MILES SOUTHWEST OF WASHINGTON GROVE.
 JV4445'
 JV4445'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 355 AND
 JV4445'DIAMOND AVENUE GO SOUTH ON DIAMOND AVENUE FOR .2 MILE TO THE
 JV4445'JUNCTION OF WATER STREET, TURN LEFT AND GO SOUTHWEST FOR .65
 JV4445'MILE TO THE BRIDGE OVER ROUTE 70S AND THE STATION IS ON THE LEFT.
 JV4445'
 JV4445'THE STATION MARK IS A BRASS BOLT SET FLUSH IN THE CONCRETE
 JV4445'WALK ON THE SOUTHEAST CORNER OF THE BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4446 ***********************************************************************
 JV4446  DESIGNATION -  17222 WSSC 1969
 JV4446  PID         -  JV4446
 JV4446  STATE/COUNTY-  MD/MONTGOMERY
 JV4446  COUNTRY     -  US
 JV4446  USGS QUAD   -  GAITHERSBURG (2016)
 JV4446
 JV4446                         *CURRENT SURVEY CONTROL
 JV4446  ______________________________________________________________________
 JV4446* NAD 83(1993) POSITION- 39 08 04.02150(N) 077 12 30.44548(W)   ADJUSTED
 JV4446* NAVD 88 ORTHO HEIGHT -   139.9   (meters)      459.    (feet) VERTCON3
 JV4446  ______________________________________________________________________
 JV4446  GEOID HEIGHT    -        -31.737 (meters)                     GEOID18
 JV4446  LAPLACE CORR    -          1.22  (seconds)                    DEFLEC18
 JV4446  HORZ ORDER      -  SECOND
 JV4446
 JV4446.The horizontal coordinates were established by classical geodetic methods
 JV4446.and adjusted by the National Geodetic Survey in November 1994.
 JV4446
 JV4446.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4446.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4446
 JV4446.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4446.GEOID18 height accuracy estimate available here.
 JV4446
 JV4446.Click photographs - Photos may exist for this station.
 JV4446
 JV4446.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4446
 JV4446. The following values were computed from the NAD 83(1993) position.
 JV4446
 JV4446;                    North         East     Units Scale Factor Converg.
 JV4446;SPC MD       -   162,952.374   381,977.075   MT  0.99996001   -0 07 51.0
 JV4446;SPC MD       -   534,619.58  1,253,203.12   sFT  0.99996001   -0 07 51.0
 JV4446;UTM  18      - 4,334,019.315   309,118.559   MT  1.00004865   -1 23 39.4
 JV4446
 JV4446!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4446!SPC MD       -   0.99998303  x   0.99996001  =   0.99994304
 JV4446!UTM  18      -   0.99998303  x   1.00004865  =   1.00003168
 JV4446
 JV4446_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0911834019(NAD 83)
 JV4446
 JV4446                          SUPERSEDED SURVEY CONTROL
 JV4446
 JV4446  NAD 83(1991)-  39 08 04.02108(N)    077 12 30.44584(W) AD(       ) 2
 JV4446  NAD 83(1986)-  39 08 04.02116(N)    077 12 30.45579(W) AD(       ) 2
 JV4446  NAD 27      -  39 08 03.63415(N)    077 12 31.51651(W) AD(       ) 2
 JV4446  NGVD 29 (07/19/86)  140.1    (m)          460.     (f) VERT ANG       
 JV4446
 JV4446.Superseded values are not recommended for survey control.
 JV4446
 JV4446.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4446.See file dsdata.pdf to determine how the superseded data were derived.
 JV4446
 JV4446_MARKER: I = METAL ROD
 JV4446_SETTING: 0 = UNSPECIFIED SETTING
 JV4446_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4446
 JV4446  HISTORY     - Date     Condition        Report By
 JV4446  HISTORY     - 1969     MONUMENTED       WSSC
 JV4446
 JV4446                          STATION DESCRIPTION
 JV4446
 JV4446'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4446'THE STATION IS ABOUT 1 MILE SOUTH OF GAITHERSBURG, AND 1-1/2
 JV4446'MILES SOUTHWEST OF WASHINGTON GROVE.
 JV4446'
 JV4446'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 355 AND
 JV4446'DIAMOND AVENUE, GO SOUTH ON DIAMOND AVENUE FOR .2 MILE TO THE
 JV4446'JUNCTION OF WATER STREET, TURN LEFT AND GO SOUTHWEST FOR .25
 JV4446'MILE TO A SIDE ROAD RIGHT (LONDONBERRY VILLAGE), TURN RIGHT AND
 JV4446'GO .1 MILE TO A T-ROAD, TURN LEFT AND GO .1 MILE TO A SIDE ROAD
 JV4446'RIGHT (TRAFALGAR SQUARE), TURN RIGHT AND GO .1 MILE TO DOWNING
 JV4446'STREET, TURN LEFT AND GO .05 MILE TO THE END OF THE STREET AND
 JV4446'TO THE STATION.
 JV4446'
 JV4446'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4446'AND IS FLUSH WITH THE SURFACE.  IT IS 20.42 FEET SOUTH OF PEPCO
 JV4446'POLE NO. 651199 AND 65.18 FEET NORTHWEST OF THE NORTHWEST CORNER
 JV4446'OF BUILDING 17001.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4405 ***********************************************************************
 JV4405  DESIGNATION -  17223 WSSC 1969
 JV4405  PID         -  JV4405
 JV4405  STATE/COUNTY-  MD/MONTGOMERY
 JV4405  COUNTRY     -  US
 JV4405  USGS QUAD   -  ROCKVILLE (2016)
 JV4405
 JV4405                         *CURRENT SURVEY CONTROL
 JV4405  ______________________________________________________________________
 JV4405* NAD 83(1993) POSITION- 39 05 53.80555(N) 077 13 39.41282(W)   ADJUSTED
 JV4405* NAVD 88 ORTHO HEIGHT -   126.7   (meters)      416.    (feet) VERTCON3
 JV4405  ______________________________________________________________________
 JV4405  GEOID HEIGHT    -        -31.724 (meters)                     GEOID18
 JV4405  LAPLACE CORR    -          1.56  (seconds)                    DEFLEC18
 JV4405  HORZ ORDER      -  SECOND
 JV4405
 JV4405.The horizontal coordinates were established by classical geodetic methods
 JV4405.and adjusted by the National Geodetic Survey in November 1994.
 JV4405
 JV4405.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4405.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4405
 JV4405.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4405.GEOID18 height accuracy estimate available here.
 JV4405
 JV4405.Click photographs - Photos may exist for this station.
 JV4405
 JV4405.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4405
 JV4405. The following values were computed from the NAD 83(1993) position.
 JV4405
 JV4405;                    North         East     Units Scale Factor Converg.
 JV4405;SPC MD       -   158,940.876   380,310.725   MT  0.99995736   -0 08 34.3
 JV4405;SPC MD       -   521,458.52  1,247,736.10   sFT  0.99995736   -0 08 34.3
 JV4405;UTM  18      - 4,330,045.145   307,364.034   MT  1.00005694   -1 24 19.0
 JV4405
 JV4405!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4405!SPC MD       -   0.99998510  x   0.99995736  =   0.99994246
 JV4405!UTM  18      -   0.99998510  x   1.00005694  =   1.00004204
 JV4405
 JV4405:                Primary Azimuth Mark                     Grid Az
 JV4405:SPC MD       -  17224 WSSC 1969                          044 57 13.4
 JV4405:UTM  18      -  17224 WSSC 1969                          046 12 58.1
 JV4405
 JV4405_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0736430045(NAD 83)
 JV4405
 JV4405|---------------------------------------------------------------------|
 JV4405| PID    Reference Object                     Distance      Geod. Az  |
 JV4405|                                                           dddmmss.s |
 JV4405| JV4366 GAITHERSBURG NIKE RADAR S DOME      APPROX. 0.9 KM 0284821.1 |
 JV4405| JV4402 17224 WSSC 1969                     420.466 METERS 0444839.1 |
 JV4405| JV4461 BROWNSTOWN PEPCO MICROWAVE          APPROX. 7.2 KM 3073419.0 |
 JV4405|---------------------------------------------------------------------|
 JV4405
 JV4405                          SUPERSEDED SURVEY CONTROL
 JV4405
 JV4405  NAD 83(1991)-  39 05 53.80504(N)    077 13 39.41298(W) AD(       ) 2
 JV4405  NAD 83(1986)-  39 05 53.80516(N)    077 13 39.42327(W) AD(       ) 2
 JV4405  NAD 27      -  39 05 53.41604(N)    077 13 40.48177(W) AD(       ) 2
 JV4405  NGVD 29 (07/19/86)  126.9    (m)          416.     (f) VERT ANG       
 JV4405
 JV4405.Superseded values are not recommended for survey control.
 JV4405
 JV4405.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4405.See file dsdata.pdf to determine how the superseded data were derived.
 JV4405
 JV4405_MARKER: I = METAL ROD
 JV4405_SETTING: 0 = UNSPECIFIED SETTING
 JV4405_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4405
 JV4405  HISTORY     - Date     Condition        Report By
 JV4405  HISTORY     - 1969     MONUMENTED       WSSC
 JV4405
 JV4405                          STATION DESCRIPTION
 JV4405
 JV4405'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4405'THE STATION IS ABOUT 1 MILE WEST OF HUNTING HILL AND 3 MILES
 JV4405'NORTHEAST OF TRAVILAH.
 JV4405'
 JV4405'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 28 AND
 JV4405'DUFIEF MILL ROAD, GO SOUTHWEST ON DUFIEF MILL ROAD FOR .45 MILES
 JV4405'TO THE STATION ON THE LEFT.
 JV4405'
 JV4405'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4405'AND IS 1-INCH BELOW THE SURFACE.  IT IS BETWEEN THE TOP OF A CUT
 JV4405'BANK AND A WIRE FENCE AND 58.07 FEET SOUTH OF PEPCO POLE
 JV4405'NO. 612431, 10.76 FEET NORTHWEST OF THE CORNER OF A FENCE POST,
 JV4405'AND 44.40 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4402 ***********************************************************************
 JV4402  DESIGNATION -  17224 WSSC 1969
 JV4402  PID         -  JV4402
 JV4402  STATE/COUNTY-  MD/MONTGOMERY
 JV4402  COUNTRY     -  US
 JV4402  USGS QUAD   -  ROCKVILLE (2016)
 JV4402
 JV4402                         *CURRENT SURVEY CONTROL
 JV4402  ______________________________________________________________________
 JV4402* NAD 83(1993) POSITION- 39 06 03.47826(N) 077 13 27.08041(W)   ADJUSTED
 JV4402* NAVD 88 ORTHO HEIGHT -   122.2   (meters)      401.    (feet) VERTCON3
 JV4402  ______________________________________________________________________
 JV4402  GEOID HEIGHT    -        -31.723 (meters)                     GEOID18
 JV4402  LAPLACE CORR    -          1.47  (seconds)                    DEFLEC18
 JV4402  HORZ ORDER      -  SECOND
 JV4402
 JV4402.The horizontal coordinates were established by classical geodetic methods
 JV4402.and adjusted by the National Geodetic Survey in November 1994.
 JV4402
 JV4402.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4402.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4402
 JV4402.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4402.GEOID18 height accuracy estimate available here.
 JV4402
 JV4402.Click photographs - Photos may exist for this station.
 JV4402
 JV4402.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4402
 JV4402. The following values were computed from the NAD 83(1993) position.
 JV4402
 JV4402;                    North         East     Units Scale Factor Converg.
 JV4402;SPC MD       -   159,238.418   380,607.787   MT  0.99995755   -0 08 26.6
 JV4402;SPC MD       -   522,434.71  1,248,710.71   sFT  0.99995755   -0 08 26.6
 JV4402;UTM  18      - 4,330,336.098   307,667.609   MT  1.00005551   -1 24 11.5
 JV4402
 JV4402!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4402!SPC MD       -   0.99998581  x   0.99995755  =   0.99994336
 JV4402!UTM  18      -   0.99998581  x   1.00005551  =   1.00004132
 JV4402
 JV4402:                Primary Azimuth Mark                     Grid Az
 JV4402:SPC MD       -  KENTLANDS                                317 47 43.4
 JV4402:UTM  18      -  KENTLANDS                                319 03 28.3
 JV4402
 JV4402_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0766730336(NAD 83)
 JV4402
 JV4402|---------------------------------------------------------------------|
 JV4402| PID    Reference Object                     Distance      Geod. Az  |
 JV4402|                                                           dddmmss.s |
 JV4402| JV4405 17223 WSSC 1969                     420.466 METERS 2244846.9 |
 JV4402| JV4461 BROWNSTOWN PEPCO MICROWAVE          APPROX. 7.2 KM 3041605.7 |
 JV4402| JV4383 KENTLANDS                           APPROX. 3.0 KM 3173916.8 |
 JV4402|---------------------------------------------------------------------|
 JV4402
 JV4402                          SUPERSEDED SURVEY CONTROL
 JV4402
 JV4402  NAD 83(1991)-  39 06 03.47775(N)    077 13 27.08056(W) AD(       ) 2
 JV4402  NAD 83(1986)-  39 06 03.47787(N)    077 13 27.09084(W) AD(       ) 2
 JV4402  NAD 27      -  39 06 03.08852(N)    077 13 28.14997(W) AD(       ) 2
 JV4402  NGVD 29 (07/19/86)  122.4    (m)          402.     (f) VERT ANG       
 JV4402
 JV4402.Superseded values are not recommended for survey control.
 JV4402
 JV4402.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4402.See file dsdata.pdf to determine how the superseded data were derived.
 JV4402
 JV4402_MARKER: I = METAL ROD
 JV4402_SETTING: 0 = UNSPECIFIED SETTING
 JV4402_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4402
 JV4402  HISTORY     - Date     Condition        Report By
 JV4402  HISTORY     - 1969     MONUMENTED       WSSC
 JV4402
 JV4402                          STATION DESCRIPTION
 JV4402
 JV4402'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4402'THE STATION IS ABOUT 1 MILE WEST OF HUNTING HILL AND 3 MILES
 JV4402'NORTHEAST OF TRAVILAH.
 JV4402'
 JV4402'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 28 AND
 JV4402'DUFIEF MILL ROAD, GO SOUTHWEST ON DUFIEF MILL ROAD FOR .15 MILES
 JV4402'TO THE STATION ON THE LEFT.
 JV4402'
 JV4402'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4402'AND IS FLUSH WITH THE SURFACE.  IT IS ON THE TOP OF A CUT BANK
 JV4402'AND 8.16 FEET SOUTHWEST OF POLE NO. 612474, 45.03 FEET WEST OF
 JV4402'THE NORTHWEST CORNER OF A HOUSE, AND 28.0 FEET EAST OF THE EAST
 JV4402'EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4436 ***********************************************************************
 JV4436  DESIGNATION -  17225 WSSC 1969
 JV4436  PID         -  JV4436
 JV4436  STATE/COUNTY-  MD/MONTGOMERY
 JV4436  COUNTRY     -  US
 JV4436  USGS QUAD   -  GAITHERSBURG (2016)
 JV4436
 JV4436                         *CURRENT SURVEY CONTROL
 JV4436  ______________________________________________________________________
 JV4436* NAD 83(1993) POSITION- 39 07 35.58670(N) 077 10 56.53669(W)   ADJUSTED
 JV4436* NAVD 88 ORTHO HEIGHT -   157.0   (meters)      515.    (feet) VERTCON3
 JV4436  ______________________________________________________________________
 JV4436  GEOID HEIGHT    -        -31.720 (meters)                     GEOID18
 JV4436  LAPLACE CORR    -          0.31  (seconds)                    DEFLEC18
 JV4436  HORZ ORDER      -  SECOND
 JV4436
 JV4436.The horizontal coordinates were established by classical geodetic methods
 JV4436.and adjusted by the National Geodetic Survey in November 1994.
 JV4436
 JV4436.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4436.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4436
 JV4436.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4436.GEOID18 height accuracy estimate available here.
 JV4436
 JV4436.Click photographs - Photos may exist for this station.
 JV4436
 JV4436.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4436
 JV4436. The following values were computed from the NAD 83(1993) position.
 JV4436
 JV4436;                    North         East     Units Scale Factor Converg.
 JV4436;SPC MD       -   162,070.701   384,230.661   MT  0.99995940   -0 06 52.1
 JV4436;SPC MD       -   531,726.96  1,260,596.76   sFT  0.99995940   -0 06 52.1
 JV4436;UTM  18      - 4,333,088.095   311,352.348   MT  1.00003822   -1 22 39.2
 JV4436
 JV4436!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4436!SPC MD       -   0.99998035  x   0.99995940  =   0.99993975
 JV4436!UTM  18      -   0.99998035  x   1.00003822  =   1.00001857
 JV4436
 JV4436:                Primary Azimuth Mark                     Grid Az
 JV4436:SPC MD       -  WASHINGTONIAN                            228 13 38.9
 JV4436:UTM  18      -  WASHINGTONIAN                            229 29 26.0
 JV4436
 JV4436_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1135233088(NAD 83)
 JV4436
 JV4436|---------------------------------------------------------------------|
 JV4436| PID    Reference Object                     Distance      Geod. Az  |
 JV4436|                                                           dddmmss.s |
 JV4436| JV4378 WASHINGTONIAN                       APPROX. 2.0 KM 2280646.8 |
 JV4436|---------------------------------------------------------------------|
 JV4436
 JV4436                          SUPERSEDED SURVEY CONTROL
 JV4436
 JV4436  NAD 83(1991)-  39 07 35.58623(N)    077 10 56.53710(W) AD(       ) 2
 JV4436  NAD 83(1986)-  39 07 35.58624(N)    077 10 56.54699(W) AD(       ) 2
 JV4436  NAD 27      -  39 07 35.19864(N)    077 10 57.61072(W) AD(       ) 2
 JV4436  NGVD 29 (07/19/86)  157.2    (m)          516.     (f) VERT ANG       
 JV4436
 JV4436.Superseded values are not recommended for survey control.
 JV4436
 JV4436.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4436.See file dsdata.pdf to determine how the superseded data were derived.
 JV4436
 JV4436_MARKER: B = BOLT
 JV4436_SETTING: 0 = UNSPECIFIED SETTING
 JV4436_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4436
 JV4436  HISTORY     - Date     Condition        Report By
 JV4436  HISTORY     - 1969     MONUMENTED       WSSC
 JV4436
 JV4436                          STATION DESCRIPTION
 JV4436
 JV4436'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4436'THE STATION IS ABOUT 1 MILE SOUTHEAST OF GAITHERSBURG AND 1 MILE
 JV4436'SOUTH OF WASHINGTON GROVE.
 JV4436'
 JV4436'THE STATION IS LOCATED ON THE WEST SIDE OF WESTLAND STREET ABOUT
 JV4436'200 FEET NORTH OF ROUTE 355.
 JV4436'
 JV4436'THE MARK IS A BRASS BOLT SET FLUSH WITH THE CONCRETE WALK AND
 JV4436'IS 52.9 FEET NORTHWEST OF A FIRE HYDRANT AND 18.00 FEET NORTH
 JV4436'OF THE ENTRANCE TO THE WALNUT HILL SHOPPING CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4434 ***********************************************************************
 JV4434  DESIGNATION -  17226 WSSC 1969
 JV4434  PID         -  JV4434
 JV4434  STATE/COUNTY-  MD/MONTGOMERY
 JV4434  COUNTRY     -  US
 JV4434  USGS QUAD   -  GAITHERSBURG (2016)
 JV4434
 JV4434                         *CURRENT SURVEY CONTROL
 JV4434  ______________________________________________________________________
 JV4434* NAD 83(1993) POSITION- 39 07 48.91531(N) 077 10 40.73570(W)   ADJUSTED
 JV4434* NAVD 88 ORTHO HEIGHT -   156.7   (meters)      514.    (feet) VERTCON3
 JV4434  ______________________________________________________________________
 JV4434  GEOID HEIGHT    -        -31.723 (meters)                     GEOID18
 JV4434  LAPLACE CORR    -          0.11  (seconds)                    DEFLEC18
 JV4434  HORZ ORDER      -  SECOND
 JV4434
 JV4434.The horizontal coordinates were established by classical geodetic methods
 JV4434.and adjusted by the National Geodetic Survey in November 1994.
 JV4434
 JV4434.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4434.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4434
 JV4434.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4434.GEOID18 height accuracy estimate available here.
 JV4434
 JV4434.Click photographs - Photos may exist for this station.
 JV4434
 JV4434.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4434
 JV4434. The following values were computed from the NAD 83(1993) position.
 JV4434
 JV4434;                    North         East     Units Scale Factor Converg.
 JV4434;SPC MD       -   162,480.967   384,610.986   MT  0.99995968   -0 06 42.1
 JV4434;SPC MD       -   533,072.97  1,261,844.54   sFT  0.99995968   -0 06 42.1
 JV4434;UTM  18      - 4,333,489.908   311,741.654   MT  1.00003641   -1 22 29.6
 JV4434
 JV4434!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4434!SPC MD       -   0.99998039  x   0.99995968  =   0.99994007
 JV4434!UTM  18      -   0.99998039  x   1.00003641  =   1.00001680
 JV4434
 JV4434_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1174133489(NAD 83)
 JV4434
 JV4434                          SUPERSEDED SURVEY CONTROL
 JV4434
 JV4434  NAD 83(1991)-  39 07 48.91483(N)    077 10 40.73611(W) AD(       ) 2
 JV4434  NAD 83(1986)-  39 07 48.91484(N)    077 10 40.74599(W) AD(       ) 2
 JV4434  NAD 27      -  39 07 48.52739(N)    077 10 41.81015(W) AD(       ) 2
 JV4434  NGVD 29 (07/19/86)  156.9    (m)          515.     (f) VERT ANG       
 JV4434
 JV4434.Superseded values are not recommended for survey control.
 JV4434
 JV4434.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4434.See file dsdata.pdf to determine how the superseded data were derived.
 JV4434
 JV4434_MARKER: I = METAL ROD
 JV4434_SETTING: 0 = UNSPECIFIED SETTING
 JV4434_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4434
 JV4434  HISTORY     - Date     Condition        Report By
 JV4434  HISTORY     - 1969     MONUMENTED       WSSC
 JV4434
 JV4434                          STATION DESCRIPTION
 JV4434
 JV4434'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4434'THE STATION IS ABOUT 1 MILE SOUTHEAST OF GAITHERSBURG AND 1 MILE
 JV4434'SOUTH OF WASHINGTON GROVE.
 JV4434'
 JV4434'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 355 AND
 JV4434'WESTLAND STREET, GO NORTH ON WESTLAND STREET FOR .4 MILES TO A
 JV4434'T-ROAD (CHESTNUT STREET).  THE STATION IS LOCATED ON THE SOUTHEAST
 JV4434'CORNER OF THE INTERSECTION.
 JV4434'
 JV4434'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4434'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 44.82 FEET SOUTH OF
 JV4434'PEPCO POLE NO. 651279, 8.70 FEET WEST OF THE SOUTHWEST CORNER OF
 JV4434'A CONCRETE CATCH BASIN, AND 83.34 FEET NORTHWEST OF THE SOUTHWEST
 JV4434'CORNER OF HOUSE 16645.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4394 ***********************************************************************
 JV4394  DESIGNATION -  17227 WSSC 1969
 JV4394  PID         -  JV4394
 JV4394  STATE/COUNTY-  MD/MONTGOMERY
 JV4394  COUNTRY     -  US
 JV4394  USGS QUAD   -  ROCKVILLE (2016)
 JV4394
 JV4394                         *CURRENT SURVEY CONTROL
 JV4394  ______________________________________________________________________
 JV4394* NAD 83(1993) POSITION- 39 06 52.66211(N) 077 09 51.11998(W)   ADJUSTED
 JV4394* NAVD 88 ORTHO HEIGHT -   154.3   (meters)      506.    (feet) VERTCON3
 JV4394  ______________________________________________________________________
 JV4394  GEOID HEIGHT    -        -31.717 (meters)                     GEOID18
 JV4394  LAPLACE CORR    -         -0.94  (seconds)                    DEFLEC18
 JV4394  HORZ ORDER      -  SECOND
 JV4394
 JV4394.The horizontal coordinates were established by classical geodetic methods
 JV4394.and adjusted by the National Geodetic Survey in November 1994.
 JV4394
 JV4394.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4394.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4394
 JV4394.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4394.GEOID18 height accuracy estimate available here.
 JV4394
 JV4394.Click photographs - Photos may exist for this station.
 JV4394
 JV4394.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4394
 JV4394. The following values were computed from the NAD 83(1993) position.
 JV4394
 JV4394;                    North         East     Units Scale Factor Converg.
 JV4394;SPC MD       -   160,744.055   385,799.521   MT  0.99995851   -0 06 11.0
 JV4394;SPC MD       -   527,374.45  1,265,743.93   sFT  0.99995851   -0 06 11.0
 JV4394;UTM  18      - 4,331,727.091   312,891.704   MT  1.00003109   -1 21 56.6
 JV4394
 JV4394!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4394!SPC MD       -   0.99998077  x   0.99995851  =   0.99993928
 JV4394!UTM  18      -   0.99998077  x   1.00003109  =   1.00001186
 JV4394
 JV4394:                Primary Azimuth Mark                     Grid Az
 JV4394:SPC MD       -  WASHINGTONIAN                            270 30 46.0
 JV4394:UTM  18      -  WASHINGTONIAN                            271 46 31.6
 JV4394
 JV4394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1289131727(NAD 83)
 JV4394
 JV4394|---------------------------------------------------------------------|
 JV4394| PID    Reference Object                     Distance      Geod. Az  |
 JV4394|                                                           dddmmss.s |
 JV4394| JV4395 17228 WSSC 1969                     439.626 METERS 2424116.7 |
 JV4394| JV4378 WASHINGTONIAN                       APPROX. 3.0 KM 2702435.0 |
 JV4394|---------------------------------------------------------------------|
 JV4394
 JV4394                          SUPERSEDED SURVEY CONTROL
 JV4394
 JV4394  NAD 83(1991)-  39 06 52.66161(N)    077 09 51.12043(W) AD(       ) 2
 JV4394  NAD 83(1986)-  39 06 52.66162(N)    077 09 51.13031(W) AD(       ) 2
 JV4394  NAD 27      -  39 06 52.27302(N)    077 09 52.19702(W) AD(       ) 2
 JV4394  NGVD 29 (07/19/86)  154.5    (m)          507.     (f) VERT ANG       
 JV4394
 JV4394.Superseded values are not recommended for survey control.
 JV4394
 JV4394.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4394.See file dsdata.pdf to determine how the superseded data were derived.
 JV4394
 JV4394_MARKER: I = METAL ROD
 JV4394_SETTING: 0 = UNSPECIFIED SETTING
 JV4394_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4394
 JV4394  HISTORY     - Date     Condition        Report By
 JV4394  HISTORY     - 1969     MONUMENTED       WSSC
 JV4394
 JV4394                          STATION DESCRIPTION
 JV4394
 JV4394'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4394'THE STATION IS ABOUT 1/2 MILE WEST OF DERWOOD AND 3 MILES
 JV4394'NORTHWEST OF HUNTING HILL.
 JV4394'
 JV4394'THE STATION IS LOCATED ON THE NORTH SIDE OF ROUTE 355 AT THE
 JV4394'INTERSECTION OF FIELDS ROAD.
 JV4394'
 JV4394'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4394'AND 2 INCHES BELOW THE SURFACE.  IT IS IN FRONT OF THE SCOTT GAS
 JV4394'STATION AND IS 17.76 FEET EAST OF PEPCO POLE NO. 614173, 16.00
 JV4394'FEET WEST OF A WATER VALVE MANHOLE, 91.87 FEET SOUTHEAST OF THE
 JV4394'SOUTHWEST CORNER OF THE GAS STATION, AND 6.3 FEET NORTH OF THE
 JV4394'NORTH EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4395 ***********************************************************************
 JV4395  DESIGNATION -  17228 WSSC 1969
 JV4395  PID         -  JV4395
 JV4395  STATE/COUNTY-  MD/MONTGOMERY
 JV4395  COUNTRY     -  US
 JV4395  USGS QUAD   -  ROCKVILLE (2016)
 JV4395
 JV4395                         *CURRENT SURVEY CONTROL
 JV4395  ______________________________________________________________________
 JV4395* NAD 83(1993) POSITION- 39 06 46.12069(N) 077 10 07.37898(W)   ADJUSTED
 JV4395* NAVD 88 ORTHO HEIGHT -   144.6   (meters)      474.    (feet) VERTCON3
 JV4395  ______________________________________________________________________
 JV4395  GEOID HEIGHT    -        -31.715 (meters)                     GEOID18
 JV4395  LAPLACE CORR    -         -0.72  (seconds)                    DEFLEC18
 JV4395  HORZ ORDER      -  SECOND
 JV4395
 JV4395.The horizontal coordinates were established by classical geodetic methods
 JV4395.and adjusted by the National Geodetic Survey in November 1994.
 JV4395
 JV4395.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4395.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4395
 JV4395.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4395.GEOID18 height accuracy estimate available here.
 JV4395
 JV4395.Click photographs - Photos may exist for this station.
 JV4395
 JV4395.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4395
 JV4395. The following values were computed from the NAD 83(1993) position.
 JV4395
 JV4395;                    North         East     Units Scale Factor Converg.
 JV4395;SPC MD       -   160,543.050   385,408.559   MT  0.99995838   -0 06 21.2
 JV4395;SPC MD       -   526,714.99  1,264,461.25   sFT  0.99995838   -0 06 21.2
 JV4395;UTM  18      - 4,331,534.736   312,496.378   MT  1.00003292   -1 22 06.7
 JV4395
 JV4395!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4395!SPC MD       -   0.99998229  x   0.99995838  =   0.99994067
 JV4395!UTM  18      -   0.99998229  x   1.00003292  =   1.00001521
 JV4395
 JV4395:                Primary Azimuth Mark                     Grid Az
 JV4395:SPC MD       -  17227 WSSC 1969                          062 47 27.6
 JV4395:UTM  18      -  17227 WSSC 1969                          064 03 13.1
 JV4395
 JV4395_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1249631534(NAD 83)
 JV4395
 JV4395|---------------------------------------------------------------------|
 JV4395| PID    Reference Object                     Distance      Geod. Az  |
 JV4395|                                                           dddmmss.s |
 JV4395| JV4394 17227 WSSC 1969                     439.626 METERS 0624106.4 |
 JV4395| JV4377 ROCKVILLE W MUN TANK                APPROX. 2.9 KM 1653448.7 |
 JV4395|---------------------------------------------------------------------|
 JV4395
 JV4395                          SUPERSEDED SURVEY CONTROL
 JV4395
 JV4395  NAD 83(1991)-  39 06 46.12020(N)    077 10 07.37945(W) AD(       ) 2
 JV4395  NAD 83(1986)-  39 06 46.12021(N)    077 10 07.38932(W) AD(       ) 2
 JV4395  NAD 27      -  39 06 45.73141(N)    077 10 08.45624(W) AD(       ) 2
 JV4395  NGVD 29 (07/19/86)  144.8    (m)          475.     (f) VERT ANG       
 JV4395
 JV4395.Superseded values are not recommended for survey control.
 JV4395
 JV4395.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4395.See file dsdata.pdf to determine how the superseded data were derived.
 JV4395
 JV4395_MARKER: I = METAL ROD
 JV4395_SETTING: 0 = UNSPECIFIED SETTING
 JV4395_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4395
 JV4395  HISTORY     - Date     Condition        Report By
 JV4395  HISTORY     - 1969     MONUMENTED       WSSC
 JV4395
 JV4395                          STATION DESCRIPTION
 JV4395
 JV4395'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4395'THE STATION IS ABOUT 1/2 MILE WEST OF DERWOOD AND 3 MILES
 JV4395'NORTHWEST OF HUNTING HILL.
 JV4395'
 JV4395'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 355 AND
 JV4395'FIELDS ROAD, GO SOUTH ON FIELDS ROAD FOR .3 MILES TO SOME FARM
 JV4395'BUILDINGS AND THE STATION IS ON THE RIGHT.
 JV4395'
 JV4395'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4395'AND IS FLUSH WITH THE SURFACE.  IT IS 12.35 FEET NORTH OF PEPCO
 JV4395'POLE NO. 636596, 37.07 FEET NORTHEAST OF THE NORTHEAST CORNER OF
 JV4395'A CINDER BLOCK BUILDING, 74.92 FEET SOUTHEAST OF THE NORTHEAST
 JV4395'CORNER OF A WHITE BARN, AND 34.47 FEET SOUTHEAST OF THE SOUTHEAST
 JV4395'CORNER OF A CINDER BLOCK ADDITION TO THE WHITE BARN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1039 ***********************************************************************
 JV1039  DESIGNATION -  1723 WSSC
 JV1039  PID         -  JV1039
 JV1039  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1039  COUNTRY     -  US
 JV1039  USGS QUAD   -  BELTSVILLE (2016)
 JV1039
 JV1039                         *CURRENT SURVEY CONTROL
 JV1039  ______________________________________________________________________
 JV1039* NAD 83(1986) POSITION- 39 05 58.     (N) 076 53 27.     (W)   SCALED
 JV1039* NAVD 88 ORTHO HEIGHT -   111.315 (meters)      365.21  (feet) ADJUSTED
 JV1039  ______________________________________________________________________
 JV1039  GEOID HEIGHT    -        -32.153 (meters)                     GEOID18
 JV1039  DYNAMIC HEIGHT  -        111.255 (meters)      365.01  (feet) COMP
 JV1039  MODELED GRAVITY -    980,091.7   (mgal)                       NAVD 88
 JV1039
 JV1039  VERT ORDER      -  SECOND    CLASS 0
 JV1039
 JV1039.The horizontal coordinates were scaled from a map and have
 JV1039.an estimated accuracy of +/- 6 seconds.
 JV1039
 JV1039.The orthometric height was determined by differential leveling and
 JV1039.adjusted by the NATIONAL GEODETIC SURVEY
 JV1039.in June 1991.
 JV1039
 JV1039.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1039.GEOID18 height accuracy estimate available here.
 JV1039
 JV1039.Click photographs - Photos may exist for this station.
 JV1039
 JV1039.The dynamic height is computed by dividing the NAVD 88
 JV1039.geopotential number by the normal gravity value computed on the
 JV1039.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1039.degrees latitude (g = 980.6199 gals.).
 JV1039
 JV1039.The modeled gravity was interpolated from observed gravity values.
 JV1039
 JV1039;                    North         East    Units  Estimated Accuracy
 JV1039;SPC MD       -   159,050.      409,440.      MT  (+/- 180 meters Scaled)
 JV1039
 JV1039_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ364295(NAD 83)
 JV1039
 JV1039                          SUPERSEDED SURVEY CONTROL
 JV1039
 JV1039  NGVD 29 (11/26/84)  111.527  (m)          365.90   (f) ADJUSTED    2 0
 JV1039
 JV1039.Superseded values are not recommended for survey control.
 JV1039
 JV1039.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1039.See file dsdata.pdf to determine how the superseded data were derived.
 JV1039
 JV1039_MARKER: DD = SURVEY DISK
 JV1039_SETTING: 0 = UNSPECIFIED SETTING
 JV1039_SP_SET: IRON PIPE
 JV1039_STAMPING: 1723
 JV1039_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1039
 JV1039  HISTORY     - Date     Condition        Report By
 JV1039  HISTORY     - UNK      MONUMENTED       WSSC
 JV1039  HISTORY     - 1939     GOOD             WSSC
 JV1039
 JV1039                          STATION DESCRIPTION
 JV1039
 JV1039'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1039'0.1 MI W FROM WILLIS SCHOOL.
 JV1039'ON SANDY SPRING ROAD, 0.1 MILE WEST OF WILLIS SCHOOL, AT THE
 JV1039'JUNCTION OF A PRIVATE DRIVE SOUTH TO A HOUSE, 56.3 FEET SOUTH OF
 JV1039'THE CENTERLINE OF SANDY SPRING ROAD, 27 FEET WEST OF THE DRIVE,
 JV1039'56.3 FEET SOUTHWEST ACROSS THE PRIVATE DRIVE FROM A POLE, AND
 JV1039'17.2 FEET NORTH OF A WALNUT TREE (THE NORTH TREE IN A ROW OF
 JV1039'TREES).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4442 ***********************************************************************
 JV4442  DESIGNATION -  17231 WSSC 1969
 JV4442  PID         -  JV4442
 JV4442  STATE/COUNTY-  MD/MONTGOMERY
 JV4442  COUNTRY     -  US
 JV4442  USGS QUAD   -  GAITHERSBURG (2016)
 JV4442
 JV4442                         *CURRENT SURVEY CONTROL
 JV4442  ______________________________________________________________________
 JV4442* NAD 83(1993) POSITION- 39 10 54.95714(N) 077 11 55.02420(W)   ADJUSTED
 JV4442* NAVD 88 ORTHO HEIGHT -   128.9   (meters)      423.    (feet) VERTCON3
 JV4442  ______________________________________________________________________
 JV4442  GEOID HEIGHT    -        -31.770 (meters)                     GEOID18
 JV4442  LAPLACE CORR    -          1.37  (seconds)                    DEFLEC18
 JV4442  HORZ ORDER      -  SECOND
 JV4442
 JV4442.The horizontal coordinates were established by classical geodetic methods
 JV4442.and adjusted by the National Geodetic Survey in November 1994.
 JV4442
 JV4442.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4442.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4442
 JV4442.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4442.GEOID18 height accuracy estimate available here.
 JV4442
 JV4442.Click photographs - Photos may exist for this station.
 JV4442
 JV4442.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4442
 JV4442. The following values were computed from the NAD 83(1993) position.
 JV4442
 JV4442;                    North         East     Units Scale Factor Converg.
 JV4442;SPC MD       -   168,221.658   382,839.230   MT  0.99996409   -0 07 28.8
 JV4442;SPC MD       -   551,907.22  1,256,031.71   sFT  0.99996409   -0 07 28.8
 JV4442;UTM  18      - 4,339,268.739   310,096.835   MT  1.00004406   -1 23 22.1
 JV4442
 JV4442!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4442!SPC MD       -   0.99998476  x   0.99996409  =   0.99994885
 JV4442!UTM  18      -   0.99998476  x   1.00004406  =   1.00002882
 JV4442
 JV4442:                Primary Azimuth Mark                     Grid Az
 JV4442:SPC MD       -  WATKINS                                  284 22 00.0
 JV4442:UTM  18      -  WATKINS                                  285 37 53.3
 JV4442
 JV4442_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1009639268(NAD 83)
 JV4442
 JV4442|---------------------------------------------------------------------|
 JV4442| PID    Reference Object                     Distance      Geod. Az  |
 JV4442|                                                           dddmmss.s |
 JV4442| JV4455 GERMANTOWN AEC TANK                 APPROX. 5.0 KM 2652649.5 |
 JV4442| JV4412 WATKINS                             APPROX. 1.1 KM 2841431.2 |
 JV4442|---------------------------------------------------------------------|
 JV4442
 JV4442                          SUPERSEDED SURVEY CONTROL
 JV4442
 JV4442  NAD 83(1991)-  39 10 54.95696(N)    077 11 55.02446(W) AD(       ) 2
 JV4442  NAD 83(1986)-  39 10 54.95674(N)    077 11 55.03460(W) AD(       ) 2
 JV4442  NAD 27      -  39 10 54.57207(N)    077 11 56.09552(W) AD(       ) 2
 JV4442  NGVD 29 (07/19/86)  129.1    (m)          424.     (f) VERT ANG       
 JV4442
 JV4442.Superseded values are not recommended for survey control.
 JV4442
 JV4442.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4442.See file dsdata.pdf to determine how the superseded data were derived.
 JV4442
 JV4442_MARKER: I = METAL ROD
 JV4442_SETTING: 0 = UNSPECIFIED SETTING
 JV4442_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4442
 JV4442  HISTORY     - Date     Condition        Report By
 JV4442  HISTORY     - 1969     MONUMENTED       WSSC
 JV4442
 JV4442                          STATION DESCRIPTION
 JV4442
 JV4442'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4442'THE STATION IS ABOUT 3 MILES NORTH OF GAITHERSBURG, 2-1/2 MILES
 JV4442'EAST OF MIDDLEBROOK, AND ON THE MONTGOMERY VILLAGE GOLF COURSE.
 JV4442'
 JV4442'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 124 AND
 JV4442'ROUTE 114 (GOSHEN ROAD) GO NORTH ON ROUTE 114 FOR 2.65 MILES TO
 JV4442'A DIRT ROAD LEFT (STEWARD TOWN ROAD), TURN LEFT AND GO WEST FOR
 JV4442'.7 MILE TO A TRACK ROAD RIGHT, TURN RIGHT AND GO NORTH FOR .5
 JV4442'MILE TO A SET OF POWER LINE TOWERS.
 JV4442'
 JV4442'THE STATION IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 JV4442'IS 1 INCH BELOW THE SURFACE.  IT IS 13.74 FEET SOUTH OF THE
 JV4442'SOUTHEAST LEG, AND 15.56 FEET NORTH OF THE NORTHEAST LEG OF
 JV4442'TOWER 97-N.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4437 ***********************************************************************
 JV4437  DESIGNATION -  17232 WSSC 1969
 JV4437  PID         -  JV4437
 JV4437  STATE/COUNTY-  MD/MONTGOMERY
 JV4437  COUNTRY     -  US
 JV4437  USGS QUAD   -  GAITHERSBURG (2016)
 JV4437
 JV4437                         *CURRENT SURVEY CONTROL
 JV4437  ______________________________________________________________________
 JV4437* NAD 83(1993) POSITION- 39 11 02.76964(N) 077 11 16.74539(W)   ADJUSTED
 JV4437* NAVD 88 ORTHO HEIGHT -   145.3   (meters)      477.    (feet) VERTCON3
 JV4437  ______________________________________________________________________
 JV4437  GEOID HEIGHT    -        -31.764 (meters)                     GEOID18
 JV4437  LAPLACE CORR    -          1.21  (seconds)                    DEFLEC18
 JV4437  HORZ ORDER      -  SECOND
 JV4437
 JV4437.The horizontal coordinates were established by classical geodetic methods
 JV4437.and adjusted by the National Geodetic Survey in November 1994.
 JV4437
 JV4437.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4437.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4437
 JV4437.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4437.GEOID18 height accuracy estimate available here.
 JV4437
 JV4437.Click photographs - Photos may exist for this station.
 JV4437
 JV4437.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4437
 JV4437. The following values were computed from the NAD 83(1993) position.
 JV4437
 JV4437;                    North         East     Units Scale Factor Converg.
 JV4437;SPC MD       -   168,460.630   383,758.426   MT  0.99996429   -0 07 04.7
 JV4437;SPC MD       -   552,691.25  1,259,047.44   sFT  0.99996429   -0 07 04.7
 JV4437;UTM  18      - 4,339,487.381   311,021.154   MT  1.00003975   -1 22 58.1
 JV4437
 JV4437!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4437!SPC MD       -   0.99998219  x   0.99996429  =   0.99994648
 JV4437!UTM  18      -   0.99998219  x   1.00003975  =   1.00002194
 JV4437
 JV4437:                Primary Azimuth Mark                     Grid Az
 JV4437:SPC MD       -  17231 WSSC 1969                          255 25 36.8
 JV4437:UTM  18      -  17231 WSSC 1969                          256 41 30.2
 JV4437
 JV4437_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1102139487(NAD 83)
 JV4437
 JV4437|---------------------------------------------------------------------|
 JV4437| PID    Reference Object                     Distance      Geod. Az  |
 JV4437|                                                           dddmmss.s |
 JV4437| JV4442 17231 WSSC 1969                     APPROX. 0.9 KM 2551832.1 |
 JV4437| JV4455 GERMANTOWN AEC TANK                 APPROX. 5.9 KM 2635014.0 |
 JV4437|---------------------------------------------------------------------|
 JV4437
 JV4437                          SUPERSEDED SURVEY CONTROL
 JV4437
 JV4437  NAD 83(1991)-  39 11 02.76945(N)    077 11 16.74566(W) AD(       ) 2
 JV4437  NAD 83(1986)-  39 11 02.76925(N)    077 11 16.75588(W) AD(       ) 2
 JV4437  NAD 27      -  39 11 02.38439(N)    077 11 17.81773(W) AD(       ) 2
 JV4437  NGVD 29 (07/19/86)  145.5    (m)          477.     (f) VERT ANG       
 JV4437
 JV4437.Superseded values are not recommended for survey control.
 JV4437
 JV4437.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4437.See file dsdata.pdf to determine how the superseded data were derived.
 JV4437
 JV4437_MARKER: I = METAL ROD
 JV4437_SETTING: 0 = UNSPECIFIED SETTING
 JV4437_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4437
 JV4437  HISTORY     - Date     Condition        Report By
 JV4437  HISTORY     - 1969     MONUMENTED       WSSC
 JV4437
 JV4437                          STATION DESCRIPTION
 JV4437
 JV4437'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4437'THE STATION IS ABOUT 3 MILES NORTH OF GAITHERSBURG AND 2-1/2
 JV4437'MILES EAST OF MIDDLEBROOK.
 JV4437'
 JV4437'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 124 AND
 JV4437'ROUTE 114 (GOSHEN ROAD) GO NORTH ON ROUTE 114 FOR 3.15 MILES TO
 JV4437'A PEPCO POWER LINE AND THE STATION IS ON THE LEFT.
 JV4437'
 JV4437'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4437'AND IS 1 INCH BELOW THE SURFACE.  IT IS 18.85 FEET SOUTHEAST OF
 JV4437'THE NORTHEAST TOWER LEG, 10.80 FEET NORTHEAST OF THE SOUTHEAST
 JV4437'TOWER LEG, AND 50 FEET WEST OF THE WEST EDGE OF ROUTE 114.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4476 ***********************************************************************
 JV4476  DESIGNATION -  17233 WSSC 1969
 JV4476  PID         -  JV4476
 JV4476  STATE/COUNTY-  MD/MONTGOMERY
 JV4476  COUNTRY     -  US
 JV4476  USGS QUAD   -  GERMANTOWN (2016)
 JV4476
 JV4476                         *CURRENT SURVEY CONTROL
 JV4476  ______________________________________________________________________
 JV4476* NAD 83(1993) POSITION- 39 11 57.66532(N) 077 19 50.17763(W)   ADJUSTED
 JV4476* NAVD 88 ORTHO HEIGHT -   159.9   (meters)      525.    (feet) VERTCON3
 JV4476  ______________________________________________________________________
 JV4476  GEOID HEIGHT    -        -31.978 (meters)                     GEOID18
 JV4476  LAPLACE CORR    -          4.48  (seconds)                    DEFLEC18
 JV4476  HORZ ORDER      -  SECOND
 JV4476
 JV4476.The horizontal coordinates were established by classical geodetic methods
 JV4476.and adjusted by the National Geodetic Survey in November 1994.
 JV4476
 JV4476.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4476.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4476
 JV4476.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4476.GEOID18 height accuracy estimate available here.
 JV4476
 JV4476.Click photographs - Photos may exist for this station.
 JV4476
 JV4476.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4476
 JV4476. The following values were computed from the NAD 83(1993) position.
 JV4476
 JV4476;                    North         East     Units Scale Factor Converg.
 JV4476;SPC MD       -   170,188.468   371,442.465   MT  0.99996575   -0 12 27.0
 JV4476;SPC MD       -   558,360.00  1,218,640.82   sFT  0.99996575   -0 12 27.0
 JV4476;UTM  18      - 4,341,486.985   298,745.077   MT  1.00009874   -1 28 24.5
 JV4476
 JV4476!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4476!SPC MD       -   0.99997993  x   0.99996575  =   0.99994568
 JV4476!UTM  18      -   0.99997993  x   1.00009874  =   1.00007867
 JV4476
 JV4476:                Primary Azimuth Mark                     Grid Az
 JV4476:SPC MD       -  WILBER                                   060 20 55.3
 JV4476:UTM  18      -  WILBER                                   061 36 52.8
 JV4476
 JV4476_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9874541486(NAD 83)
 JV4476
 JV4476|---------------------------------------------------------------------|
 JV4476| PID    Reference Object                     Distance      Geod. Az  |
 JV4476|                                                           dddmmss.s |
 JV4476| JV4459 WILBER                              APPROX. 3.3 KM 0600828.3 |
 JV4476|---------------------------------------------------------------------|
 JV4476
 JV4476                          SUPERSEDED SURVEY CONTROL
 JV4476
 JV4476  NAD 83(1991)-  39 11 57.66448(N)    077 19 50.17657(W) AD(       ) 2
 JV4476  NAD 83(1986)-  39 11 57.66469(N)    077 19 50.18772(W) AD(       ) 2
 JV4476  NAD 27      -  39 11 57.28232(N)    077 19 51.23146(W) AD(       ) 2
 JV4476  NGVD 29 (07/19/86)  160.1    (m)          525.     (f) VERT ANG       
 JV4476
 JV4476.Superseded values are not recommended for survey control.
 JV4476
 JV4476.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4476.See file dsdata.pdf to determine how the superseded data were derived.
 JV4476
 JV4476_MARKER: I = METAL ROD
 JV4476_SETTING: 0 = UNSPECIFIED SETTING
 JV4476_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4476
 JV4476  HISTORY     - Date     Condition        Report By
 JV4476  HISTORY     - 1969     MONUMENTED       WSSC
 JV4476
 JV4476                          STATION DESCRIPTION
 JV4476
 JV4476'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4476'THE STATION IS ABOUT 1 MILE NORTHWEST OF BLOCKTOWN AND 1 MILE
 JV4476'SOUTH OF SLIDELL.
 JV4476'
 JV4476'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 117 AND
 JV4476'SLIDELL ROAD, GO NORTHWEST ON ROUTE 117 FOR .8 MILES TO THE
 JV4476'STATION ON THE RIGHT.
 JV4476'
 JV4476'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4476'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 66.75 FEET EAST OF POLE
 JV4476'NO. M-7 1/2, 64.78 FEET WEST OF AN 18-INCH LOCUST, AND 42.22
 JV4476'FEET NORTH OF A 60-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4474 ***********************************************************************
 JV4474  DESIGNATION -  17234 WSSC 1969
 JV4474  PID         -  JV4474
 JV4474  STATE/COUNTY-  MD/MONTGOMERY
 JV4474  COUNTRY     -  US
 JV4474  USGS QUAD   -  GERMANTOWN (2016)
 JV4474
 JV4474                         *CURRENT SURVEY CONTROL
 JV4474  ______________________________________________________________________
 JV4474* NAD 83(1993) POSITION- 39 11 41.03998(N) 077 19 33.58394(W)   ADJUSTED
 JV4474* NAVD 88 ORTHO HEIGHT -   156.5   (meters)      513.    (feet) VERTCON3
 JV4474  ______________________________________________________________________
 JV4474  GEOID HEIGHT    -        -31.962 (meters)                     GEOID18
 JV4474  LAPLACE CORR    -          4.28  (seconds)                    DEFLEC18
 JV4474  HORZ ORDER      -  SECOND
 JV4474
 JV4474.The horizontal coordinates were established by classical geodetic methods
 JV4474.and adjusted by the National Geodetic Survey in November 1994.
 JV4474
 JV4474.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4474.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4474
 JV4474.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4474.GEOID18 height accuracy estimate available here.
 JV4474
 JV4474.Click photographs - Photos may exist for this station.
 JV4474
 JV4474.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4474
 JV4474. The following values were computed from the NAD 83(1993) position.
 JV4474
 JV4474;                    North         East     Units Scale Factor Converg.
 JV4474;SPC MD       -   169,674.354   371,838.787   MT  0.99996530   -0 12 16.6
 JV4474;SPC MD       -   556,673.28  1,219,941.09   sFT  0.99996530   -0 12 16.6
 JV4474;UTM  18      - 4,340,964.172   299,129.996   MT  1.00009684   -1 28 13.5
 JV4474
 JV4474!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4474!SPC MD       -   0.99998046  x   0.99996530  =   0.99994576
 JV4474!UTM  18      -   0.99998046  x   1.00009684  =   1.00007730
 JV4474
 JV4474:                Primary Azimuth Mark                     Grid Az
 JV4474:SPC MD       -  17233 WSSC 1969                          322 22 19.1
 JV4474:UTM  18      -  17233 WSSC 1969                          323 38 16.0
 JV4474
 JV4474_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9912940964(NAD 83)
 JV4474
 JV4474|---------------------------------------------------------------------|
 JV4474| PID    Reference Object                     Distance      Geod. Az  |
 JV4474|                                                           dddmmss.s |
 JV4474| JV4461 BROWNSTOWN PEPCO MICROWAVE          APPROX. 6.9 KM 1555901.9 |
 JV4474| JV4476 17233 WSSC 1969                     APPROX. 0.6 KM 3221002.5 |
 JV4474|---------------------------------------------------------------------|
 JV4474
 JV4474                          SUPERSEDED SURVEY CONTROL
 JV4474
 JV4474  NAD 83(1991)-  39 11 41.03912(N)    077 19 33.58292(W) AD(       ) 2
 JV4474  NAD 83(1986)-  39 11 41.03933(N)    077 19 33.59404(W) AD(       ) 2
 JV4474  NAD 27      -  39 11 40.65704(N)    077 19 34.63714(W) AD(       ) 2
 JV4474  NGVD 29 (07/19/86)  156.7    (m)          514.     (f) VERT ANG       
 JV4474
 JV4474.Superseded values are not recommended for survey control.
 JV4474
 JV4474.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4474.See file dsdata.pdf to determine how the superseded data were derived.
 JV4474
 JV4474_MARKER: I = METAL ROD
 JV4474_SETTING: 0 = UNSPECIFIED SETTING
 JV4474_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4474
 JV4474  HISTORY     - Date     Condition        Report By
 JV4474  HISTORY     - 1969     MONUMENTED       WSSC
 JV4474
 JV4474                          STATION DESCRIPTION
 JV4474
 JV4474'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4474'THE STATION IS ABOUT 2 MILES SOUTH OF SLIDELL AND 1 MILE NORTHWEST
 JV4474'OF BOYDS AND IN THE TOWN OF BLOCKTOWN.
 JV4474'
 JV4474'THE STATION IS LOCATED ON THE SOUTH SIDE OF ROUTE 117 ABOUT 200
 JV4474'FEET EAST OF SLIDELL ROAD.
 JV4474'
 JV4474'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4474'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 47.92 FEET SOUTH OF
 JV4474'C AND P POLE NO. 147, 62.09 FEET EAST OF POLE NO. F-3822, 77.61
 JV4474'FEET NORTH OF POLE NO. 30.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4470 ***********************************************************************
 JV4470  DESIGNATION -  17235 WSSC 1969
 JV4470  PID         -  JV4470
 JV4470  STATE/COUNTY-  MD/MONTGOMERY
 JV4470  COUNTRY     -  US
 JV4470  USGS QUAD   -  GERMANTOWN (2016)
 JV4470
 JV4470                         *CURRENT SURVEY CONTROL
 JV4470  ______________________________________________________________________
 JV4470* NAD 83(1993) POSITION- 39 10 58.99072(N) 077 18 27.10365(W)   ADJUSTED
 JV4470* NAVD 88 ORTHO HEIGHT -   126.1   (meters)      414.    (feet) VERTCON3
 JV4470  ______________________________________________________________________
 JV4470  GEOID HEIGHT    -        -31.911 (meters)                     GEOID18
 JV4470  LAPLACE CORR    -          3.73  (seconds)                    DEFLEC18
 JV4470  HORZ ORDER      -  SECOND
 JV4470
 JV4470.The horizontal coordinates were established by classical geodetic methods
 JV4470.and adjusted by the National Geodetic Survey in November 1994.
 JV4470
 JV4470.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4470.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4470
 JV4470.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4470.GEOID18 height accuracy estimate available here.
 JV4470
 JV4470.Click photographs - Photos may exist for this station.
 JV4470
 JV4470.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4470
 JV4470. The following values were computed from the NAD 83(1993) position.
 JV4470
 JV4470;                    North         East     Units Scale Factor Converg.
 JV4470;SPC MD       -   168,372.130   373,429.668   MT  0.99996419   -0 11 34.9
 JV4470;SPC MD       -   552,400.90  1,225,160.50   sFT  0.99996419   -0 11 34.9
 JV4470;UTM  18      - 4,339,626.956   300,691.926   MT  1.00008914   -1 27 30.2
 JV4470
 JV4470!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4470!SPC MD       -   0.99998522  x   0.99996419  =   0.99994941
 JV4470!UTM  18      -   0.99998522  x   1.00008914  =   1.00007436
 JV4470
 JV4470:                Primary Azimuth Mark                     Grid Az
 JV4470:SPC MD       -  WILBER                                   014 00 18.0
 JV4470:UTM  18      -  WILBER                                   015 16 13.3
 JV4470
 JV4470_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0069139626(NAD 83)
 JV4470
 JV4470|---------------------------------------------------------------------|
 JV4470| PID    Reference Object                     Distance      Geod. Az  |
 JV4470|                                                           dddmmss.s |
 JV4470| JV4459 WILBER                              APPROX. 3.5 KM 0134843.1 |
 JV4470| JV4471 17236                               465.660 METERS 2805331.0 |
 JV4470|---------------------------------------------------------------------|
 JV4470
 JV4470                          SUPERSEDED SURVEY CONTROL
 JV4470
 JV4470  NAD 83(1991)-  39 10 58.98978(N)    077 18 27.10272(W) AD(       ) 2
 JV4470  NAD 83(1986)-  39 10 58.99005(N)    077 18 27.11378(W) AD(       ) 2
 JV4470  NAD 27      -  39 10 58.60689(N)    077 18 28.16229(W) AD(       ) 2
 JV4470  NGVD 29 (07/19/86)  126.3    (m)          414.     (f) VERT ANG       
 JV4470
 JV4470.Superseded values are not recommended for survey control.
 JV4470
 JV4470.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4470.See file dsdata.pdf to determine how the superseded data were derived.
 JV4470
 JV4470_MARKER: I = METAL ROD
 JV4470_SETTING: 0 = UNSPECIFIED SETTING
 JV4470_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4470
 JV4470  HISTORY     - Date     Condition        Report By
 JV4470  HISTORY     - 1969     MONUMENTED       WSSC
 JV4470
 JV4470                          STATION DESCRIPTION
 JV4470
 JV4470'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4470'THE STATION IS ABOUT 1/2 MILE EAST OF BOYDS AND 2 MILES NORTHWEST
 JV4470'OF OLD GERMANTOWN.
 JV4470'
 JV4470'TO REACH THE STATION FROM THE UNDERPASS ON ROUTE 117 IN BOYDS,
 JV4470'GO SOUTHEAST ON ROUTE 117 FOR .3 MILES TO THE ENTRANCE TO
 JV4470'GROVES CEMENT COMPANY ON THE LEFT.  TURN LEFT AND GO NORTH FOR
 JV4470'200 FEET TO THE B AND O RAILROAD TRACKS AND THE STATION AS
 JV4470'DESCRIBED.
 JV4470'
 JV4470'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4470'AND IS FLUSH WITH THE SURFACE.  IT IS LOCATED BETWEEN THE SIDE
 JV4470'TRACK LEADING INTO GROVES CEMENT COMPANY AND THE EAST BOUND
 JV4470'TRACK.  IT IS 62.55 FEET SOUTHEAST OF POLE NO. M-2832, 78.06
 JV4470'FEET SOUTHWEST OF POLE NO. M-2831, 13.91 FEET SOUTH OF P.K. NAIL
 JV4470'IN A RAILROAD TIE, AND IS 23.76 FEET SOUTHEAST OF A P.K. NAIL IN
 JV4470'A RAILROAD TIE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4471 ***********************************************************************
 JV4471  DESIGNATION -  17236
 JV4471  PID         -  JV4471
 JV4471  STATE/COUNTY-  MD/MONTGOMERY
 JV4471  COUNTRY     -  US
 JV4471  USGS QUAD   -  GERMANTOWN (2016)
 JV4471
 JV4471                         *CURRENT SURVEY CONTROL
 JV4471  ______________________________________________________________________
 JV4471* NAD 83(1993) POSITION- 39 11 01.84353(N) 077 18 46.15624(W)   ADJUSTED
 JV4471* NAVD 88 ORTHO HEIGHT -   128.2   (meters)      421.    (feet) VERTCON3
 JV4471  ______________________________________________________________________
 JV4471  GEOID HEIGHT    -        -31.922 (meters)                     GEOID18
 JV4471  LAPLACE CORR    -          3.81  (seconds)                    DEFLEC18
 JV4471  HORZ ORDER      -  SECOND
 JV4471
 JV4471.The horizontal coordinates were established by classical geodetic methods
 JV4471.and adjusted by the National Geodetic Survey in November 1994.
 JV4471
 JV4471.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4471.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4471
 JV4471.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4471.GEOID18 height accuracy estimate available here.
 JV4471
 JV4471.Click photographs - Photos may exist for this station.
 JV4471
 JV4471.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4471
 JV4471. The following values were computed from the NAD 83(1993) position.
 JV4471
 JV4471;                    North         East     Units Scale Factor Converg.
 JV4471;SPC MD       -   168,461.657   372,972.711   MT  0.99996426   -0 11 46.8
 JV4471;SPC MD       -   552,694.62  1,223,661.30   sFT  0.99996426   -0 11 46.8
 JV4471;UTM  18      - 4,339,726.565   300,237.001   MT  1.00009137   -1 27 42.3
 JV4471
 JV4471!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4471!SPC MD       -   0.99998490  x   0.99996426  =   0.99994916
 JV4471!UTM  18      -   0.99998490  x   1.00009137  =   1.00007626
 JV4471
 JV4471:                Primary Azimuth Mark                     Grid Az
 JV4471:SPC MD       -  17235 WSSC 1969                          101 05 05.8
 JV4471:UTM  18      -  17235 WSSC 1969                          102 21 01.3
 JV4471
 JV4471_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0023739726(NAD 83)
 JV4471
 JV4471|---------------------------------------------------------------------|
 JV4471| PID    Reference Object                     Distance      Geod. Az  |
 JV4471|                                                           dddmmss.s |
 JV4471| JV4470 17235 WSSC 1969                     465.660 METERS 1005319.0 |
 JV4471|---------------------------------------------------------------------|
 JV4471
 JV4471                          SUPERSEDED SURVEY CONTROL
 JV4471
 JV4471  NAD 83(1991)-  39 11 01.84261(N)    077 18 46.15530(W) AD(       ) 2
 JV4471  NAD 83(1986)-  39 11 01.84286(N)    077 18 46.16636(W) AD(       ) 2
 JV4471  NAD 27      -  39 11 01.45976(N)    077 18 47.21427(W) AD(       ) 2
 JV4471  NGVD 29 (07/19/86)  128.4    (m)          421.     (f) VERT ANG       
 JV4471
 JV4471.Superseded values are not recommended for survey control.
 JV4471
 JV4471.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4471.See file dsdata.pdf to determine how the superseded data were derived.
 JV4471
 JV4471_MARKER: B = BOLT
 JV4471_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV4471_SP_SET: BRIDGE
 JV4471_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV4471_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4471+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2010
 JV4471
 JV4471  HISTORY     - Date     Condition        Report By
 JV4471  HISTORY     - 1969     MONUMENTED       WSSC
 JV4471  HISTORY     - 20100605 GOOD             GEOCAC
 JV4471
 JV4471                          STATION DESCRIPTION
 JV4471
 JV4471'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4471'THE STATION IS ABOUT 1 MILE SOUTHEAST OF BLOCKTOWN AND IN THE
 JV4471'TOWN OF BOYDS.
 JV4471'
 JV4471'THE STATION IS LOCATED ON THE SOUTH SIDE OF THE B AND O BRIDGE
 JV4471'OVER ROUTE 117.
 JV4471'
 JV4471'THE STATION MARK IS A BRASS BOLT SET FLUSH IN THE CENTERLINE
 JV4471'OF A CONCRETE SLAB.
 JV4471
 JV4471                          STATION RECOVERY (2010)
 JV4471
 JV4471'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV4471'RECOVERED IN GOOD CONDITION.
 JV4471'
 JV4471'STATION IS ABOUT 40FT NW OF CGS STATION T 34 (PID JV2214), 21FT ESE OF
 JV4471'END OF OLD STATION PLATFORM ON SOUTH SIDE OF RAILROAD, ABOUT 15.5FT N
 JV4471'OF SW END OF BRIDGE RAILING, 7.5FT SSW OF S RAIL OF EB TRACK, 2FT
 JV4471'UNDER TOP LEVEL OF EB RAILS.
 JV4471'
 JV4471'BOLT IS IN FLOOR OF BRIDGE, ABOUT 4IN UNDER LEVEL OF BALLAST. DUE TO
 JV4471'PROXIMITY OF STATION TO ACTIVE RAILROAD, CAUTION MUST BE TAKEN TO
 JV4471'CONTACT THE RAILROAD BEFORE OCCUPYING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5971 ***********************************************************************
 JV5971  DESIGNATION -  17238 WSSC 1969
 JV5971  PID         -  JV5971
 JV5971  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5971  COUNTRY     -  US
 JV5971  USGS QUAD   -  BELTSVILLE (2016)
 JV5971
 JV5971                         *CURRENT SURVEY CONTROL
 JV5971  ______________________________________________________________________
 JV5971* NAD 83(1991) POSITION- 39 07 10.30476(N) 076 53 45.82509(W)   ADJUSTED
 JV5971* NAVD 88 ORTHO HEIGHT -   121.3   (meters)      398.    (feet) VERTCON3
 JV5971  ______________________________________________________________________
 JV5971  GEOID HEIGHT    -        -32.134 (meters)                     GEOID18
 JV5971  LAPLACE CORR    -         -3.93  (seconds)                    DEFLEC18
 JV5971  HORZ ORDER      -  SECOND
 JV5971
 JV5971.The horizontal coordinates were established by classical geodetic methods
 JV5971.and adjusted by the National Geodetic Survey in January 1992.
 JV5971
 JV5971.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5971.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5971
 JV5971.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5971.GEOID18 height accuracy estimate available here.
 JV5971
 JV5971.Click photographs - Photos may exist for this station.
 JV5971
 JV5971.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5971
 JV5971. The following values were computed from the NAD 83(1991) position.
 JV5971
 JV5971;                    North         East     Units Scale Factor Converg.
 JV5971;SPC MD       -   161,280.447   408,988.190   MT  0.99995887   +0 03 54.8
 JV5971;SPC MD       -   529,134.27  1,341,822.09   sFT  0.99995887   +0 03 54.8
 JV5971;UTM  18      - 4,331,752.542   336,087.052   MT  0.99993083   -1 11 47.6
 JV5971
 JV5971!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5971!SPC MD       -   0.99998601  x   0.99995887  =   0.99994488
 JV5971!UTM  18      -   0.99998601  x   0.99993083  =   0.99991684
 JV5971
 JV5971:                Primary Azimuth Mark                     Grid Az
 JV5971:SPC MD       -  BROOKLYN                                 223 54 24.4
 JV5971:UTM  18      -  BROOKLYN                                 225 10 06.8
 JV5971
 JV5971_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3608731752(NAD 83)
 JV5971
 JV5971|---------------------------------------------------------------------|
 JV5971| PID    Reference Object                     Distance      Geod. Az  |
 JV5971|                                                           dddmmss.s |
 JV5971| JV5940 BROOKLYN                            APPROX. 0.7 KM 2235819.2 |
 JV5971| JV5974 17239 WSSC 1969                     172.359 METERS 33114     |
 JV5971|---------------------------------------------------------------------|
 JV5971
 JV5971                          SUPERSEDED SURVEY CONTROL
 JV5971
 JV5971  NAD 83(1986)-  39 07 10.30373(N)    076 53 45.83467(W) AD(       ) 2
 JV5971  NAD 27      -  39 07 09.91437(N)    076 53 46.93102(W) AD(       ) 2
 JV5971  NGVD 29 (07/19/86)  121.5    (m)          399.     (f) VERT ANG       
 JV5971
 JV5971.Superseded values are not recommended for survey control.
 JV5971
 JV5971.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5971.See file dsdata.pdf to determine how the superseded data were derived.
 JV5971
 JV5971_MARKER: I = METAL ROD
 JV5971_SETTING: 0 = UNSPECIFIED SETTING
 JV5971_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5971
 JV5971  HISTORY     - Date     Condition        Report By
 JV5971  HISTORY     - 1969     MONUMENTED       WSSC
 JV5971  HISTORY     - 19950709 MARK NOT FOUND   USPSQD
 JV5971
 JV5971                          STATION DESCRIPTION
 JV5971
 JV5971'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5971'THE STATION IS ABOUT 2-1/2 MILES NORTHEAST OF BURTONSVILLE AND
 JV5971'3 MILES NORTHWEST OF LAUREL.
 JV5971'
 JV5971'THE STATION IS LOCATED ON THE NORTH SIDE OF BROOKLYN BRIDGE
 JV5971'ROAD AT THE INTERSECTION OF JULIE LANE.
 JV5971'
 JV5971'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5971'AND IS 1 INCH BELOW THE SURFACE.  IT IS 8.69 FEET SOUTH OF G AND E
 JV5971'POLE 49896, 72.05 FEET WEST OF THE NORTHWEST CORNER OF HOUSE
 JV5971'16007 AND 44.67 FEET NORTHEAST OF THE NORTHEAST CORNER OF A
 JV5971'HEADWALL.
 JV5971
 JV5971                          STATION RECOVERY (1995)
 JV5971
 JV5971'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5971'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5974 ***********************************************************************
 JV5974  DESIGNATION -  17239 WSSC 1969
 JV5974  PID         -  JV5974
 JV5974  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5974  COUNTRY     -  US
 JV5974  USGS QUAD   -  BELTSVILLE (2016)
 JV5974
 JV5974                         *CURRENT SURVEY CONTROL
 JV5974  ______________________________________________________________________
 JV5974* NAD 83(1991) POSITION- 39 07 15.20410(N) 076 53 49.27803(W)   ADJUSTED
 JV5974* NAVD 88 ORTHO HEIGHT -   122.1   (meters)      401.    (feet) VERTCON3
 JV5974  ______________________________________________________________________
 JV5974  GEOID HEIGHT    -        -32.132 (meters)                     GEOID18
 JV5974  LAPLACE CORR    -         -3.89  (seconds)                    DEFLEC18
 JV5974  HORZ ORDER      -  SECOND
 JV5974
 JV5974.The horizontal coordinates were established by classical geodetic methods
 JV5974.and adjusted by the National Geodetic Survey in January 1992.
 JV5974
 JV5974.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5974.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5974
 JV5974.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5974.GEOID18 height accuracy estimate available here.
 JV5974
 JV5974.Click photographs - Photos may exist for this station.
 JV5974
 JV5974.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5974
 JV5974. The following values were computed from the NAD 83(1991) position.
 JV5974
 JV5974;                    North         East     Units Scale Factor Converg.
 JV5974;SPC MD       -   161,431.434   408,905.075   MT  0.99995897   +0 03 52.7
 JV5974;SPC MD       -   529,629.63  1,341,549.40   sFT  0.99995897   +0 03 52.7
 JV5974;UTM  18      - 4,331,905.318   336,007.285   MT  0.99993115   -1 11 50.0
 JV5974
 JV5974!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5974!SPC MD       -   0.99998589  x   0.99995897  =   0.99994486
 JV5974!UTM  18      -   0.99998589  x   0.99993115  =   0.99991704
 JV5974
 JV5974_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3600731905(NAD 83)
 JV5974
 JV5974                          SUPERSEDED SURVEY CONTROL
 JV5974
 JV5974  NAD 83(1986)-  39 07 15.20309(N)    076 53 49.28759(W) AD(       ) 2
 JV5974  NAD 27      -  39 07 14.81380(N)    076 53 50.38381(W) AD(       ) 2
 JV5974  NGVD 29 (07/19/86)  122.3    (m)          401.     (f) VERT ANG       
 JV5974
 JV5974.Superseded values are not recommended for survey control.
 JV5974
 JV5974.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5974.See file dsdata.pdf to determine how the superseded data were derived.
 JV5974
 JV5974_MARKER: I = METAL ROD
 JV5974_SETTING: 0 = UNSPECIFIED SETTING
 JV5974_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5974
 JV5974  HISTORY     - Date     Condition        Report By
 JV5974  HISTORY     - 1969     MONUMENTED       WSSC
 JV5974
 JV5974                          STATION DESCRIPTION
 JV5974
 JV5974'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5974'THE STATION IS ABOUT 2-1/2 MILES NORTHEAST OF BURTONSVILLE AND
 JV5974'IS 3 MILES NORTHWEST OF LAUREL.
 JV5974'
 JV5974'THE STATION IS ON THE NORTHEAST SIDE OF JULIE LANE ABOUT 400
 JV5974'FEET NORTHWEST OF BROOKLYN BRIDGE ROAD.
 JV5974'
 JV5974'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5974'AND PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 28.40 FEET SOUTHEAST
 JV5974'OF THE CENTER OF A FIRE HYDRANT, 9.25 FEET SOUTHEAST OF G AND E
 JV5974'POLE 249564, 49.99 FEET SOUTHEAST OF THE SOUTHWEST CORNER OF A
 JV5974'GARAGE AND 27.62 FEET NORTHWEST OF A 30-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4489 ***********************************************************************
 HV4489  DESIGNATION -  17242 WSSC 1970
 HV4489  PID         -  HV4489
 HV4489  STATE/COUNTY-  MD/MONTGOMERY
 HV4489  COUNTRY     -  US
 HV4489  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4489
 HV4489                         *CURRENT SURVEY CONTROL
 HV4489  ______________________________________________________________________
 HV4489* NAD 83(1991) POSITION- 38 58 06.92147(N) 077 00 04.24166(W)   ADJUSTED
 HV4489* NAVD 88 ORTHO HEIGHT -    64.8   (meters)      213.    (feet) VERTCON3
 HV4489  ______________________________________________________________________
 HV4489  GEOID HEIGHT    -        -32.026 (meters)                     GEOID18
 HV4489  LAPLACE CORR    -         -2.99  (seconds)                    DEFLEC18
 HV4489  HORZ ORDER      -  SECOND
 HV4489
 HV4489.The horizontal coordinates were established by classical geodetic methods
 HV4489.and adjusted by the National Geodetic Survey in January 1992.
 HV4489
 HV4489.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4489.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4489
 HV4489.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4489.GEOID18 height accuracy estimate available here.
 HV4489
 HV4489.Click photographs - Photos may exist for this station.
 HV4489
 HV4489.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4489
 HV4489. The following values were computed from the NAD 83(1991) position.
 HV4489
 HV4489;                    North         East     Units Scale Factor Converg.
 HV4489;SPC MD       -   144,519.312   399,897.893   MT  0.99995115   -0 00 02.7
 HV4489;SPC MD       -   474,143.78  1,311,998.34   sFT  0.99995115   -0 00 02.7
 HV4489;UTM  18      - 4,315,195.417   326,630.429   MT  0.99997012   -1 15 31.8
 HV4489
 HV4489!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4489!SPC MD       -   0.99999486  x   0.99995115  =   0.99994601
 HV4489!UTM  18      -   0.99999486  x   0.99997012  =   0.99996498
 HV4489
 HV4489:                Primary Azimuth Mark                     Grid Az
 HV4489:SPC MD       -  CAROLE                                   045 37 43.7
 HV4489:UTM  18      -  CAROLE                                   046 53 12.8
 HV4489
 HV4489_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2663015195(NAD 83)
 HV4489
 HV4489|---------------------------------------------------------------------|
 HV4489| PID    Reference Object                     Distance      Geod. Az  |
 HV4489|                                                           dddmmss.s |
 HV4489| HV7757 CAROLE                              APPROX. 2.3 KM 0453741.0 |
 HV4489| HV7748 TAKOMA PARK PEPCO MICROWAVE         275.194 METERS 07205     |
 HV4489| HV4490 17241 WSSC 1970                     293.227 METERS 22318     |
 HV4489|---------------------------------------------------------------------|
 HV4489
 HV4489                          SUPERSEDED SURVEY CONTROL
 HV4489
 HV4489  NAD 83(1986)-  38 58 06.92089(N)    077 00 04.25267(W) AD(       ) 2
 HV4489  NAD 27      -  38 58 06.52323(N)    077 00 05.33702(W) AD(       ) 2
 HV4489  NGVD 29 (07/19/86)   65.0    (m)          213.     (f) VERT ANG       
 HV4489
 HV4489.Superseded values are not recommended for survey control.
 HV4489
 HV4489.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4489.See file dsdata.pdf to determine how the superseded data were derived.
 HV4489
 HV4489_MARKER: I = METAL ROD
 HV4489_SETTING: 0 = UNSPECIFIED SETTING
 HV4489_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4489
 HV4489  HISTORY     - Date     Condition        Report By
 HV4489  HISTORY     - 1969     MONUMENTED       WSSC
 HV4489
 HV4489                          STATION DESCRIPTION
 HV4489
 HV4489'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4489'THE STATION IS ABOUT 1 MILE SOUTH OF TAKOMA PARK AND 2 MILES
 HV4489'NORTHWEST OF AVONDALE AT THE MARYLAND AND DISTRICT OF COLUMBIA
 HV4489'LINE.
 HV4489'
 HV4489'THE STATION IS LOCATED ON THE NORTHWEST CORNER OF EASTERN AVENUE
 HV4489'AND SLIGO MILL ROAD.
 HV4489'
 HV4489'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4489'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 18.41 FEET EAST OF
 HV4489'PEPCO POLE 529937, 5.67 FEET SOUTHEAST OF A MARYLAND AND DISTRICT
 HV4489'OF COLUMBIA STONE AND 31.43 WEST OF A MARYLAND AND DISTRICT OF
 HV4489'COLUMBIA STONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8132 ***********************************************************************
 HV8132  DESIGNATION -  17243 WSSC 1970
 HV8132  PID         -  HV8132
 HV8132  STATE/COUNTY-  MD/MONTGOMERY
 HV8132  COUNTRY     -  US
 HV8132  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8132
 HV8132                         *CURRENT SURVEY CONTROL
 HV8132  ______________________________________________________________________
 HV8132* NAD 83(1991) POSITION- 38 59 31.04766(N) 076 59 31.60623(W)   ADJUSTED
 HV8132* NAVD 88 ORTHO HEIGHT -    66.8   (meters)      219.    (feet) VERTCON3
 HV8132  ______________________________________________________________________
 HV8132  GEOID HEIGHT    -        -32.027 (meters)                     GEOID18
 HV8132  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 HV8132  HORZ ORDER      -  SECOND
 HV8132
 HV8132.The horizontal coordinates were established by classical geodetic methods
 HV8132.and adjusted by the National Geodetic Survey in January 1992.
 HV8132
 HV8132.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8132.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8132
 HV8132.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8132.GEOID18 height accuracy estimate available here.
 HV8132
 HV8132.Click photographs - Photos may exist for this station.
 HV8132
 HV8132.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8132
 HV8132. The following values were computed from the NAD 83(1991) position.
 HV8132
 HV8132;                    North         East     Units Scale Factor Converg.
 HV8132;SPC MD       -   147,113.459   400,683.281   MT  0.99995190   +0 00 17.8
 HV8132;SPC MD       -   482,654.74  1,314,575.06   sFT  0.99995190   +0 00 17.8
 HV8132;UTM  18      - 4,317,771.733   327,472.613   MT  0.99996653   -1 15 13.6
 HV8132
 HV8132!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8132!SPC MD       -   0.99999455  x   0.99995190  =   0.99994645
 HV8132!UTM  18      -   0.99999455  x   0.99996653  =   0.99996108
 HV8132
 HV8132:                Primary Azimuth Mark                     Grid Az
 HV8132:SPC MD       -  CAROLE                                   141 07 25.8
 HV8132:UTM  18      -  CAROLE                                   142 22 57.2
 HV8132
 HV8132_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2747217771(NAD 83)
 HV8132
 HV8132|---------------------------------------------------------------------|
 HV8132| PID    Reference Object                     Distance      Geod. Az  |
 HV8132|                                                           dddmmss.s |
 HV8132| HV7757 CAROLE                              APPROX. 1.3 KM 1410743.6 |
 HV8132|---------------------------------------------------------------------|
 HV8132
 HV8132                          SUPERSEDED SURVEY CONTROL
 HV8132
 HV8132  NAD 83(1986)-  38 59 31.04703(N)    076 59 31.61700(W) AD(       ) 2
 HV8132  NAD 27      -  38 59 30.65107(N)    076 59 32.70183(W) AD(       ) 2
 HV8132  NGVD 29 (07/19/86)   67.0    (m)          220.     (f) VERT ANG       
 HV8132
 HV8132.Superseded values are not recommended for survey control.
 HV8132
 HV8132.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8132.See file dsdata.pdf to determine how the superseded data were derived.
 HV8132
 HV8132_MARKER: I = METAL ROD
 HV8132_SETTING: 0 = UNSPECIFIED SETTING
 HV8132_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8132
 HV8132  HISTORY     - Date     Condition        Report By
 HV8132  HISTORY     - 1969     MONUMENTED       WSSC
 HV8132
 HV8132                          STATION DESCRIPTION
 HV8132
 HV8132'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8132'THE STATION IS IN LANGLEY PARK ON THE PRINCE GEORGES COUNTY LINE.
 HV8132'
 HV8132'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 650 (NEW
 HV8132'HAMPSHIRE AVENUE) AND ROUTE 193 (UNIVERSITY BOULEVARD), GO WEST
 HV8132'ON ROUTE 193 FOR .5 MILES TO LOCKNEY AVENUE.  TURN LEFT ON
 HV8132'LOCKNEY AVENUE AND GO TO THE INTERSECTION OF MERRIMACK
 HV8132'DRIVE.  PROCEED 200 FEET SOUTH ON LOCKNEY AVENUE TO THE STATION
 HV8132'ON THE RIGHT.
 HV8132'
 HV8132'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8132'AND IS 3 INCHES BELOW THE SURFACE.  IT IS 18.68 FEET NORTHEAST
 HV8132'OF PEPCO POLE NO. 732577, 40.22 FEET WEST OF THE SOUTHEAST
 HV8132'CORNER OF HOUSE NO. 8128, 17.30 FEET SOUTHWEST OF THE SOUTH EDGE
 HV8132'OF A CONCRETE WALK AND 2.60 FEET EAST OF THE BACK OF A 2 FOOT
 HV8132'CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6006 ***********************************************************************
 JV6006  DESIGNATION -  17244 WSSC 1969
 JV6006  PID         -  JV6006
 JV6006  STATE/COUNTY-  MD/MONTGOMERY
 JV6006  COUNTRY     -  US
 JV6006  USGS QUAD   -  BELTSVILLE (2016)
 JV6006
 JV6006                         *CURRENT SURVEY CONTROL
 JV6006  ______________________________________________________________________
 JV6006* NAD 83(1991) POSITION- 39 00 23.90989(N) 076 58 49.86484(W)   ADJUSTED
 JV6006* NAVD 88 ORTHO HEIGHT -    66.2   (meters)      217.    (feet) VERTCON3
 JV6006  ______________________________________________________________________
 JV6006  GEOID HEIGHT    -        -32.037 (meters)                     GEOID18
 JV6006  LAPLACE CORR    -         -3.10  (seconds)                    DEFLEC18
 JV6006  HORZ ORDER      -  SECOND
 JV6006
 JV6006.The horizontal coordinates were established by classical geodetic methods
 JV6006.and adjusted by the National Geodetic Survey in January 1992.
 JV6006
 JV6006.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6006.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6006
 JV6006.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6006.GEOID18 height accuracy estimate available here.
 JV6006
 JV6006.Click photographs - Photos may exist for this station.
 JV6006
 JV6006.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6006
 JV6006. The following values were computed from the NAD 83(1991) position.
 JV6006
 JV6006;                    North         East     Units Scale Factor Converg.
 JV6006;SPC MD       -   148,743.678   401,687.417   MT  0.99995245   +0 00 44.0
 JV6006;SPC MD       -   488,003.22  1,317,869.47   sFT  0.99995245   +0 00 44.0
 JV6006;UTM  18      - 4,319,379.517   328,512.336   MT  0.99996212   -1 14 48.7
 JV6006
 JV6006!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6006!SPC MD       -   0.99999464  x   0.99995245  =   0.99994709
 JV6006!UTM  18      -   0.99999464  x   0.99996212  =   0.99995676
 JV6006
 JV6006:                Primary Azimuth Mark                     Grid Az
 JV6006:SPC MD       -  CAROLE                                   183 54 36.9
 JV6006:UTM  18      -  CAROLE                                   185 10 09.6
 JV6006
 JV6006_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2851219379(NAD 83)
 JV6006
 JV6006|---------------------------------------------------------------------|
 JV6006| PID    Reference Object                     Distance      Geod. Az  |
 JV6006|                                                           dddmmss.s |
 JV6006| JV5952 HILLANDALE GOOD SHEPHERD CH         APPROX. 0.9 KM 0161001.3 |
 JV6006| HV7757 CAROLE                              APPROX. 2.7 KM 1835520.9 |
 JV6006|---------------------------------------------------------------------|
 JV6006
 JV6006                          SUPERSEDED SURVEY CONTROL
 JV6006
 JV6006  NAD 83(1986)-  39 00 23.90920(N)    076 58 49.87548(W) AD(       ) 2
 JV6006  NAD 27      -  39 00 23.51398(N)    076 58 50.96154(W) AD(       ) 2
 JV6006  NGVD 29 (07/19/86)   66.4    (m)          218.     (f) VERT ANG       
 JV6006
 JV6006.Superseded values are not recommended for survey control.
 JV6006
 JV6006.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6006.See file dsdata.pdf to determine how the superseded data were derived.
 JV6006
 JV6006_MARKER: I = METAL ROD
 JV6006_SETTING: 0 = UNSPECIFIED SETTING
 JV6006_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6006
 JV6006  HISTORY     - Date     Condition        Report By
 JV6006  HISTORY     - 1969     MONUMENTED       WSSC
 JV6006
 JV6006                          STATION DESCRIPTION
 JV6006
 JV6006'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6006'THE STATION IS ABOUT 2-1/2 MILES SOUTH OF WHITE OAK AND 3 MILES
 JV6006'WEST OF COLLEGE PARK.
 JV6006'
 JV6006'THE STATION IS LOCATED ON THE NORTHWEST CORNER OF NORTHAMPTON
 JV6006'DRIVE AND NEW HAMPSHIRE AVENUE (ROUTE 650).
 JV6006'
 JV6006'THE MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND IS
 JV6006'FLUSH WITH THE SURFACE.  IT IS 19.63 FEET NORTH OF POLE 746176,
 JV6006'20.35 FEET SOUTH OF THE SOUTHEAST CORNER OF A CONCRETE CATCH
 JV6006'BASIN AND 5.0 FEET WEST OF THE WEST EDGE OF THE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6003 ***********************************************************************
 JV6003  DESIGNATION -  17245 WSSC 1969
 JV6003  PID         -  JV6003
 JV6003  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6003  COUNTRY     -  US
 JV6003  USGS QUAD   -  BELTSVILLE (2016)
 JV6003
 JV6003                         *CURRENT SURVEY CONTROL
 JV6003  ______________________________________________________________________
 JV6003* NAD 83(1991) POSITION- 39 00 33.47374(N) 076 58 33.26216(W)   ADJUSTED
 JV6003* NAVD 88 ORTHO HEIGHT -    72.1   (meters)      237.    (feet) VERTCON3
 JV6003  ______________________________________________________________________
 JV6003  GEOID HEIGHT    -        -32.043 (meters)                     GEOID18
 JV6003  LAPLACE CORR    -         -3.11  (seconds)                    DEFLEC18
 JV6003  HORZ ORDER      -  SECOND
 JV6003
 JV6003.The horizontal coordinates were established by classical geodetic methods
 JV6003.and adjusted by the National Geodetic Survey in January 1992.
 JV6003
 JV6003.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6003.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6003
 JV6003.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6003.GEOID18 height accuracy estimate available here.
 JV6003
 JV6003.Click photographs - Photos may exist for this station.
 JV6003
 JV6003.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6003
 JV6003. The following values were computed from the NAD 83(1991) position.
 JV6003
 JV6003;                    North         East     Units Scale Factor Converg.
 JV6003;SPC MD       -   149,038.686   402,086.791   MT  0.99995255   +0 00 54.4
 JV6003;SPC MD       -   488,971.09  1,319,179.75   sFT  0.99995255   +0 00 54.4
 JV6003;UTM  18      - 4,319,665.680   328,918.100   MT  0.99996041   -1 14 38.5
 JV6003
 JV6003!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6003!SPC MD       -   0.99999372  x   0.99995255  =   0.99994627
 JV6003!UTM  18      -   0.99999372  x   0.99996041  =   0.99995413
 JV6003
 JV6003:                Primary Azimuth Mark                     Grid Az
 JV6003:SPC MD       -  CHATEAU                                  007 46 45.3
 JV6003:UTM  18      -  CHATEAU                                  009 02 18.2
 JV6003
 JV6003_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2891819665(NAD 83)
 JV6003
 JV6003|---------------------------------------------------------------------|
 JV6003| PID    Reference Object                     Distance      Geod. Az  |
 JV6003|                                                           dddmmss.s |
 JV6003| JV5953 CHATEAU                             APPROX. 0.8 KM 0074739.7 |
 JV6003| JV6004 17246 WSSC 1969                     234.256 METERS 33005     |
 JV6003|---------------------------------------------------------------------|
 JV6003
 JV6003                          SUPERSEDED SURVEY CONTROL
 JV6003
 JV6003  NAD 83(1986)-  39 00 33.47297(N)    076 58 33.27288(W) AD(       ) 2
 JV6003  NAD 27      -  39 00 33.07834(N)    076 58 34.35961(W) AD(       ) 2
 JV6003  NGVD 29 (07/19/86)   72.3    (m)          237.     (f) VERT ANG       
 JV6003
 JV6003.Superseded values are not recommended for survey control.
 JV6003
 JV6003.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6003.See file dsdata.pdf to determine how the superseded data were derived.
 JV6003
 JV6003_MARKER: I = METAL ROD
 JV6003_SETTING: 0 = UNSPECIFIED SETTING
 JV6003_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6003
 JV6003  HISTORY     - Date     Condition        Report By
 JV6003  HISTORY     - 1969     MONUMENTED       WSSC
 JV6003
 JV6003                          STATION DESCRIPTION
 JV6003
 JV6003'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6003'THE STATION IS ABOUT 2-1/2 MILES WEST OF COLLEGE PARK AND IN
 JV6003'THE TOWN OF ADELPHI.
 JV6003'
 JV6003'TO REACH THE STATION FROM THE INTERSECTION OF ADELPHI ROAD
 JV6003'AND MT. PISGAH ROAD GO SOUTHEAST ON ADELPHI ROAD FOR .2 MILE
 JV6003'TO THE STATION ON THE RIGHT.
 JV6003'
 JV6003'THE MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 JV6003'IS 3 INCHES BELOW THE SURFACE.  IT IS IN A SMALL DIRT AREA
 JV6003'SURROUNDED BY 3 CONCRETE WALKS AND THE SOUTHEAST CORNER OF
 JV6003'THE PARKING LOT.  IT IS 65.41 FEET NORTHEAST OF THE NORTHWEST
 JV6003'CORNER OF BUILDING 9406, 31.49 FEET NORTHWEST OF THE ANGLE
 JV6003'POINT IN BUILDING 9404 AND 4.4 FEET SOUTHEAST OF THE
 JV6003'SOUTHEAST CORNER OF THE PARKING LOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6004 ***********************************************************************
 JV6004  DESIGNATION -  17246 WSSC 1969
 JV6004  PID         -  JV6004
 JV6004  STATE/COUNTY-  MD/MONTGOMERY
 JV6004  COUNTRY     -  US
 JV6004  USGS QUAD   -  BELTSVILLE (2016)
 JV6004
 JV6004                         *CURRENT SURVEY CONTROL
 JV6004  ______________________________________________________________________
 JV6004* NAD 83(1991) POSITION- 39 00 40.05843(N) 076 58 38.11708(W)   ADJUSTED
 JV6004* NAVD 88 ORTHO HEIGHT -    80.6   (meters)      264.    (feet) VERTCON3
 JV6004  ______________________________________________________________________
 JV6004  GEOID HEIGHT    -        -32.040 (meters)                     GEOID18
 JV6004  LAPLACE CORR    -         -3.12  (seconds)                    DEFLEC18
 JV6004  HORZ ORDER      -  SECOND
 JV6004
 JV6004.The horizontal coordinates were established by classical geodetic methods
 JV6004.and adjusted by the National Geodetic Survey in January 1992.
 JV6004
 JV6004.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6004.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6004
 JV6004.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6004.GEOID18 height accuracy estimate available here.
 JV6004
 JV6004.Click photographs - Photos may exist for this station.
 JV6004
 JV6004.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6004
 JV6004. The following values were computed from the NAD 83(1991) position.
 JV6004
 JV6004;                    North         East     Units Scale Factor Converg.
 JV6004;SPC MD       -   149,241.703   401,969.938   MT  0.99995263   +0 00 51.4
 JV6004;SPC MD       -   489,637.15  1,318,796.37   sFT  0.99995263   +0 00 51.4
 JV6004;UTM  18      - 4,319,871.218   328,805.735   MT  0.99996089   -1 14 41.7
 JV6004
 JV6004!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6004!SPC MD       -   0.99999238  x   0.99995263  =   0.99994501
 JV6004!UTM  18      -   0.99999238  x   0.99996089  =   0.99995327
 JV6004
 JV6004_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2880519871(NAD 83)
 JV6004
 JV6004                          SUPERSEDED SURVEY CONTROL
 JV6004
 JV6004  NAD 83(1986)-  39 00 40.05768(N)    076 58 38.12779(W) AD(       ) 2
 JV6004  NAD 27      -  39 00 39.66315(N)    076 58 39.21437(W) AD(       ) 2
 JV6004  NGVD 29 (07/19/86)   80.8    (m)          265.     (f) VERT ANG       
 JV6004
 JV6004.Superseded values are not recommended for survey control.
 JV6004
 JV6004.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6004.See file dsdata.pdf to determine how the superseded data were derived.
 JV6004
 JV6004_MARKER: I = METAL ROD
 JV6004_SETTING: 0 = UNSPECIFIED SETTING
 JV6004_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6004
 JV6004  HISTORY     - Date     Condition        Report By
 JV6004  HISTORY     - 1969     MONUMENTED       WSSC
 JV6004
 JV6004                          STATION DESCRIPTION
 JV6004
 JV6004'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6004'THE STATION IS ABOUT 2-1/2 MILES WEST OF COLLEGE PARK AND IN
 JV6004'THE TOWN OF ADELPHI.
 JV6004'
 JV6004'THE STATION IS LOCATED ON THE NORTHEAST CORNER OF ADELPHI ROAD
 JV6004'AND MT. PISGAH ROAD.
 JV6004'
 JV6004'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV6004'AND IS 1-INCH BELOW THE SURFACE.  IT IS 65.33 FEET SOUTH OF
 JV6004'C AND P POLE NO. P-14287, 62.88 FEET NORTH OF PEPCO POLE 725107
 JV6004'AND IS 3.9 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE CONCRETE
 JV6004'WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6001 ***********************************************************************
 JV6001  DESIGNATION -  17247 WSSC 1969
 JV6001  PID         -  JV6001
 JV6001  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6001  COUNTRY     -  US
 JV6001  USGS QUAD   -  BELTSVILLE (2016)
 JV6001
 JV6001                         *CURRENT SURVEY CONTROL
 JV6001  ______________________________________________________________________
 JV6001* NAD 83(1991) POSITION- 39 01 06.66572(N) 076 57 51.49561(W)   ADJUSTED
 JV6001* NAVD 88 ORTHO HEIGHT -    81.6   (meters)      268.    (feet) VERTCON3
 JV6001  ______________________________________________________________________
 JV6001  GEOID HEIGHT    -        -32.057 (meters)                     GEOID18
 JV6001  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 JV6001  HORZ ORDER      -  SECOND
 JV6001
 JV6001.The horizontal coordinates were established by classical geodetic methods
 JV6001.and adjusted by the National Geodetic Survey in January 1992.
 JV6001
 JV6001.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6001.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6001
 JV6001.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6001.GEOID18 height accuracy estimate available here.
 JV6001
 JV6001.Click photographs - Photos may exist for this station.
 JV6001
 JV6001.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6001
 JV6001. The following values were computed from the NAD 83(1991) position.
 JV6001
 JV6001;                    North         East     Units Scale Factor Converg.
 JV6001;SPC MD       -   150,062.531   403,091.235   MT  0.99995294   +0 01 20.7
 JV6001;SPC MD       -   492,330.15  1,322,475.16   sFT  0.99995294   +0 01 20.7
 JV6001;UTM  18      - 4,320,667.210   329,944.808   MT  0.99995610   -1 14 13.1
 JV6001
 JV6001!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6001!SPC MD       -   0.99999223  x   0.99995294  =   0.99994517
 JV6001!UTM  18      -   0.99999223  x   0.99995610  =   0.99994833
 JV6001
 JV6001:                Primary Azimuth Mark                     Grid Az
 JV6001:SPC MD       -  CHATEAU                                  257 46 41.4
 JV6001:UTM  18      -  CHATEAU                                  259 02 15.2
 JV6001
 JV6001_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2994420667(NAD 83)
 JV6001
 JV6001|---------------------------------------------------------------------|
 JV6001| PID    Reference Object                     Distance      Geod. Az  |
 JV6001|                                                           dddmmss.s |
 JV6001| JV5953 CHATEAU                             APPROX. 0.9 KM 2574802.1 |
 JV6001| JV6002 17362 WSSC 1969                      90.044 METERS 35931     |
 JV6001|---------------------------------------------------------------------|
 JV6001
 JV6001                          SUPERSEDED SURVEY CONTROL
 JV6001
 JV6001  NAD 83(1986)-  39 01 06.66495(N)    076 57 51.50620(W) AD(       ) 2
 JV6001  NAD 27      -  39 01 06.27079(N)    076 57 52.59430(W) AD(       ) 2
 JV6001  NGVD 29 (07/19/86)   81.8    (m)          268.     (f) VERT ANG       
 JV6001
 JV6001.Superseded values are not recommended for survey control.
 JV6001
 JV6001.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6001.See file dsdata.pdf to determine how the superseded data were derived.
 JV6001
 JV6001_MARKER: B = BOLT
 JV6001_SETTING: 0 = UNSPECIFIED SETTING
 JV6001_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6001
 JV6001  HISTORY     - Date     Condition        Report By
 JV6001  HISTORY     - 1969     MONUMENTED       WSSC
 JV6001
 JV6001                          STATION DESCRIPTION
 JV6001
 JV6001'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6001'THE STATION IS ABOUT 2 MILES SOUTHEAST OF WHITE OAK AND
 JV6001'1-1/2 MILES NORTH OF ADELPHI.
 JV6001'
 JV6001'THE STATION IS IN THE CENTER OF THE CONCRETE WALK ON RIGGS
 JV6001'ROAD (ROUE 212) BRIDGE OVER THE CAPITAL BELTWAY (ROUTE 495).
 JV6001'
 JV6001'THS STATION MARK IS A BRASS BOLT SET FLUSH IN THE CONCRETE
 JV6001'WALK AND IS ON THE WEST SIDE OF THE BRIDGE, 8.3 FEET NORTH OF
 JV6001'THE SOUTHWEST END OF THE BRIDGE AND 2.6 FEET WEST OF THE WEST
 JV6001'EDGE OF THE WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5993 ***********************************************************************
 JV5993  DESIGNATION -  17248 WSSC 1969
 JV5993  PID         -  JV5993
 JV5993  STATE/COUNTY-  MD/MONTGOMERY
 JV5993  COUNTRY     -  US
 JV5993  USGS QUAD   -  BELTSVILLE (2016)
 JV5993
 JV5993                         *CURRENT SURVEY CONTROL
 JV5993  ______________________________________________________________________
 JV5993* NAD 83(1991) POSITION- 39 02 44.73314(N) 076 57 06.20577(W)   ADJUSTED
 JV5993* NAVD 88 ORTHO HEIGHT -    92.1   (meters)      302.    (feet) VERTCON3
 JV5993  ______________________________________________________________________
 JV5993  GEOID HEIGHT    -        -32.065 (meters)                     GEOID18
 JV5993  LAPLACE CORR    -         -3.57  (seconds)                    DEFLEC18
 JV5993  HORZ ORDER      -  SECOND
 JV5993
 JV5993.The horizontal coordinates were established by classical geodetic methods
 JV5993.and adjusted by the National Geodetic Survey in January 1992.
 JV5993
 JV5993.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5993.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5993
 JV5993.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5993.GEOID18 height accuracy estimate available here.
 JV5993
 JV5993.Click photographs - Photos may exist for this station.
 JV5993
 JV5993.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5993
 JV5993. The following values were computed from the NAD 83(1991) position.
 JV5993
 JV5993;                    North         East     Units Scale Factor Converg.
 JV5993;SPC MD       -   153,087.075   404,179.105   MT  0.99995423   +0 01 49.1
 JV5993;SPC MD       -   502,253.18  1,326,044.28   sFT  0.99995423   +0 01 49.1
 JV5993;UTM  18      - 4,323,667.107   331,098.907   MT  0.99995128   -1 13 47.1
 JV5993
 JV5993!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5993!SPC MD       -   0.99999058  x   0.99995423  =   0.99994481
 JV5993!UTM  18      -   0.99999058  x   0.99995128  =   0.99994186
 JV5993
 JV5993:                Primary Azimuth Mark                     Grid Az
 JV5993:SPC MD       -  ELDORADO                                 259 54 08.9
 JV5993:UTM  18      -  ELDORADO                                 261 09 45.1
 JV5993
 JV5993_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3109823667(NAD 83)
 JV5993
 JV5993|---------------------------------------------------------------------|
 JV5993| PID    Reference Object                     Distance      Geod. Az  |
 JV5993|                                                           dddmmss.s |
 JV5993| JV5946 ELDORADO                            APPROX. 3.5 KM 2595558.0 |
 JV5993| JV5994 17249 WSSC 1969                     351.279 METERS 35126     |
 JV5993|---------------------------------------------------------------------|
 JV5993
 JV5993                          SUPERSEDED SURVEY CONTROL
 JV5993
 JV5993  NAD 83(1986)-  39 02 44.73224(N)    076 57 06.21613(W) AD(       ) 2
 JV5993  NAD 27      -  39 02 44.33924(N)    076 57 07.30533(W) AD(       ) 2
 JV5993  NGVD 29 (07/19/86)   92.3    (m)          303.     (f) VERT ANG       
 JV5993
 JV5993.Superseded values are not recommended for survey control.
 JV5993
 JV5993.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5993.See file dsdata.pdf to determine how the superseded data were derived.
 JV5993
 JV5993_MARKER: I = METAL ROD
 JV5993_SETTING: 0 = UNSPECIFIED SETTING
 JV5993_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5993
 JV5993  HISTORY     - Date     Condition        Report By
 JV5993  HISTORY     - 1969     MONUMENTED       WSSC
 JV5993
 JV5993                          STATION DESCRIPTION
 JV5993
 JV5993'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5993'THE STATION IS ABOUT 1 MILE NORTHWEST OF POWDER MILL ESTATES
 JV5993'AND 2 MILES EAST OF WHITE OAK.
 JV5993'
 JV5993'TO REACH THE STATION FROM THE INTERSECTION OF POWDER MILL
 JV5993'ROAD (ROUTE 212) AND CHERRY HILL ROAD GO NORTH FOR .5 MILE ON
 JV5993'CHERRY HILL ROAD TO THE STATION ON THE RIGHT.
 JV5993'
 JV5993'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5993'AND IS FLUSH WITH THE SURFACE.  IT IS 8.45 FEET SOUTHEAST OF THE
 JV5993'CENTER OF A FIRE HYDRANT, 4.75 FEET NORTHWEST OF PEPCO POLE
 JV5993'814369, AND 16.25 FEET EAST OF THE EAST EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5994 ***********************************************************************
 JV5994  DESIGNATION -  17249 WSSC 1969
 JV5994  PID         -  JV5994
 JV5994  STATE/COUNTY-  MD/MONTGOMERY
 JV5994  COUNTRY     -  US
 JV5994  USGS QUAD   -  BELTSVILLE (2016)
 JV5994
 JV5994                         *CURRENT SURVEY CONTROL
 JV5994  ______________________________________________________________________
 JV5994* NAD 83(1991) POSITION- 39 02 55.99742(N) 076 57 08.37988(W)   ADJUSTED
 JV5994* NAVD 88 ORTHO HEIGHT -    91.5   (meters)      300.    (feet) VERTCON3
 JV5994  ______________________________________________________________________
 JV5994  GEOID HEIGHT    -        -32.062 (meters)                     GEOID18
 JV5994  LAPLACE CORR    -         -3.59  (seconds)                    DEFLEC18
 JV5994  HORZ ORDER      -  SECOND
 JV5994
 JV5994.The horizontal coordinates were established by classical geodetic methods
 JV5994.and adjusted by the National Geodetic Survey in January 1992.
 JV5994
 JV5994.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5994.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5994
 JV5994.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5994.GEOID18 height accuracy estimate available here.
 JV5994
 JV5994.Click photographs - Photos may exist for this station.
 JV5994
 JV5994.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5994
 JV5994. The following values were computed from the NAD 83(1991) position.
 JV5994
 JV5994;                    North         East     Units Scale Factor Converg.
 JV5994;SPC MD       -   153,434.398   404,126.644   MT  0.99995440   +0 01 47.7
 JV5994;SPC MD       -   503,392.69  1,325,872.16   sFT  0.99995440   +0 01 47.7
 JV5994;UTM  18      - 4,324,015.499   331,054.098   MT  0.99995146   -1 13 48.8
 JV5994
 JV5994!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5994!SPC MD       -   0.99999068  x   0.99995440  =   0.99994508
 JV5994!UTM  18      -   0.99999068  x   0.99995146  =   0.99994214
 JV5994
 JV5994_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3105424015(NAD 83)
 JV5994
 JV5994                          SUPERSEDED SURVEY CONTROL
 JV5994
 JV5994  NAD 83(1986)-  39 02 55.99652(N)    076 57 08.39021(W) AD(       ) 2
 JV5994  NAD 27      -  39 02 55.60369(N)    076 57 09.47930(W) AD(       ) 2
 JV5994  NGVD 29 (07/19/86)   91.7    (m)          301.     (f) VERT ANG       
 JV5994
 JV5994.Superseded values are not recommended for survey control.
 JV5994
 JV5994.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5994.See file dsdata.pdf to determine how the superseded data were derived.
 JV5994
 JV5994_MARKER: I = METAL ROD
 JV5994_SETTING: 0 = UNSPECIFIED SETTING
 JV5994_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5994
 JV5994  HISTORY     - Date     Condition        Report By
 JV5994  HISTORY     - 1969     MONUMENTED       WSSC
 JV5994
 JV5994                          STATION DESCRIPTION
 JV5994
 JV5994'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5994'THE STATION IS ABOUT 1 MILE NORTHWEST OF POWDER MILL ESTATES
 JV5994'AND 2 MILES EAST OF WHITE OAK.
 JV5994'
 JV5994'TO REACH THE STATION FROM THE INTERSECTION OF POWDER MILL ROAD
 JV5994'(ROUTE 212) AND CHERRY HILL ROAD, GO NORTH ON CHERRY HILL ROAD
 JV5994'FOR .7 MILE TO THE STATION ON THE LEFT.
 JV5994'
 JV5994'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5994'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 9.21 FEET SOUTHWEST
 JV5994'OF PEPCO POLE 828513, 64.14 FEET SOUTHEAST OF PEPCO POLE 824779,
 JV5994'67.59 FEET NORTHEAST OF THE NORTHWEST CORNER AND 80.80 FEET
 JV5994'NORTHEAST OF THE SOUTHEAST CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1346 ***********************************************************************
 HV1346  DESIGNATION -  1725 WSSC
 HV1346  PID         -  HV1346
 HV1346  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1346  COUNTRY     -  US
 HV1346  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1346
 HV1346                         *CURRENT SURVEY CONTROL
 HV1346  ______________________________________________________________________
 HV1346* NAD 83(1986) POSITION- 38 55 53.     (N) 076 56 12.     (W)   SCALED
 HV1346* NAVD 88 ORTHO HEIGHT -     5.50  (+/-2cm)       18.0   (feet) VERTCON3
 HV1346  ______________________________________________________________________
 HV1346  GEOID HEIGHT    -        -32.207 (meters)                     GEOID18
 HV1346  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1346
 HV1346.The horizontal coordinates were scaled from a map and have
 HV1346.an estimated accuracy of +/- 6 seconds.
 HV1346
 HV1346.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1346.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1346
 HV1346.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1346.GEOID18 height accuracy estimate available here.
 HV1346
 HV1346.The vertical order pertains to the NGVD 29 superseded value.
 HV1346
 HV1346.Click photographs - Photos may exist for this station.
 HV1346
 HV1346;                    North         East    Units  Estimated Accuracy
 HV1346;SPC MD       -   140,390.      405,490.      MT  (+/- 180 meters Scaled)
 HV1346
 HV1346_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ321109(NAD 83)
 HV1346
 HV1346                          SUPERSEDED SURVEY CONTROL
 HV1346
 HV1346  NGVD 29 (11/26/84)    5.729  (m)           18.80   (f) ADJUSTED    2 0
 HV1346
 HV1346.Superseded values are not recommended for survey control.
 HV1346
 HV1346.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1346.See file dsdata.pdf to determine how the superseded data were derived.
 HV1346
 HV1346_MARKER: DD = SURVEY DISK
 HV1346_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1346_SP_SET: RETAINING WALL OF BUILDING
 HV1346_STAMPING: 1725
 HV1346_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1346
 HV1346  HISTORY     - Date     Condition        Report By
 HV1346  HISTORY     - UNK      MONUMENTED       WSSC
 HV1346  HISTORY     - 1944     GOOD             WSSC
 HV1346
 HV1346                          STATION DESCRIPTION
 HV1346
 HV1346'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1346'0.8 MI S FROM BLADENSBURG.
 HV1346'AT THE BLADENSBURG SEWAGE DISPOSAL PLANT, AT THE SOUTHWEST
 HV1346'CORNER OF SLUDGE BUILDING, AND IN THE TOP OF A RETAINING WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5989 ***********************************************************************
 JV5989  DESIGNATION -  17251 WSSC 1969
 JV5989  PID         -  JV5989
 JV5989  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5989  COUNTRY     -  US
 JV5989  USGS QUAD   -  BELTSVILLE (2016)
 JV5989
 JV5989                         *CURRENT SURVEY CONTROL
 JV5989  ______________________________________________________________________
 JV5989* NAD 83(1991) POSITION- 39 03 20.08765(N) 076 56 31.79057(W)   ADJUSTED
 JV5989* NAVD 88 ORTHO HEIGHT -    76.3   (meters)      250.    (feet) VERTCON3
 JV5989  ______________________________________________________________________
 JV5989  GEOID HEIGHT    -        -32.078 (meters)                     GEOID18
 JV5989  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 JV5989  HORZ ORDER      -  SECOND
 JV5989
 JV5989.The horizontal coordinates were established by classical geodetic methods
 JV5989.and adjusted by the National Geodetic Survey in January 1992.
 JV5989
 JV5989.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5989.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5989
 JV5989.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5989.GEOID18 height accuracy estimate available here.
 JV5989
 JV5989.Click photographs - Photos may exist for this station.
 JV5989
 JV5989.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5989
 JV5989. The following values were computed from the NAD 83(1991) position.
 JV5989
 JV5989;                    North         East     Units Scale Factor Converg.
 JV5989;SPC MD       -   154,177.765   405,005.972   MT  0.99995476   +0 02 10.7
 JV5989;SPC MD       -   505,831.55  1,328,757.09   sFT  0.99995476   +0 02 10.7
 JV5989;UTM  18      - 4,324,739.343   331,949.557   MT  0.99994775   -1 13 26.4
 JV5989
 JV5989!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5989!SPC MD       -   0.99999306  x   0.99995476  =   0.99994782
 JV5989!UTM  18      -   0.99999306  x   0.99994775  =   0.99994081
 JV5989
 JV5989:                Primary Azimuth Mark                     Grid Az
 JV5989:SPC MD       -  LIBRARY                                  154 08 47.5
 JV5989:UTM  18      -  LIBRARY                                  155 24 24.6
 JV5989
 JV5989_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3194924739(NAD 83)
 JV5989
 JV5989|---------------------------------------------------------------------|
 JV5989| PID    Reference Object                     Distance      Geod. Az  |
 JV5989|                                                           dddmmss.s |
 JV5989| JV5965 LIBRARY                             APPROX. 4.0 KM 1541058.2 |
 JV5989| JV5991 17252 WSSC 1969                     207.583 METERS 29330     |
 JV5989|---------------------------------------------------------------------|
 JV5989
 JV5989                          SUPERSEDED SURVEY CONTROL
 JV5989
 JV5989  NAD 83(1986)-  39 03 20.08668(N)    076 56 31.80100(W) AD(       ) 2
 JV5989  NAD 27      -  39 03 19.69436(N)    076 56 32.89184(W) AD(       ) 2
 JV5989  NGVD 29 (07/19/86)   76.5    (m)          251.     (f) VERT ANG       
 JV5989
 JV5989.Superseded values are not recommended for survey control.
 JV5989
 JV5989.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5989.See file dsdata.pdf to determine how the superseded data were derived.
 JV5989
 JV5989_MARKER: I = METAL ROD
 JV5989_SETTING: 0 = UNSPECIFIED SETTING
 JV5989_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5989
 JV5989  HISTORY     - Date     Condition        Report By
 JV5989  HISTORY     - 1969     MONUMENTED       WSSC
 JV5989
 JV5989                          STATION DESCRIPTION
 JV5989
 JV5989'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5989'THE STATION IS ON THE PRINCE GEORGES AND MONTGOMERY COUNTY
 JV5989'LINES AND IN THE SUBDIVISION OF CALVERTON.
 JV5989'
 JV5989'THE STATION IS ON THE SOUTH SIDE OF BELTSVILLE ROAD ABOUT 130
 JV5989'FEET EAST OF CALVERTON BOULEVARD.
 JV5989'
 JV5989'THE MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND IS
 JV5989'2 INCHES BELOW THE SURFACE.  IT IS IN THE GROUND IN BETWEEN THE
 JV5989'ROAD AND THE WALK AND IS 52.80 FEET SOUTHEAST OF C AND P POLE
 JV5989'NO. 10655, 58.20 FEET NORTHEAST OF THE NORTHWEST CORNER AND 45.59
 JV5989'FEET NORTHWEST OF THE NORTHEAST CORNER OF HOUSE 3110 AND IS
 JV5989'2.5 FEET SOUTH OF THE SOUTH EDGE OF THE CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5991 ***********************************************************************
 JV5991  DESIGNATION -  17252 WSSC 1969
 JV5991  PID         -  JV5991
 JV5991  STATE/COUNTY-  MD/MONTGOMERY
 JV5991  COUNTRY     -  US
 JV5991  USGS QUAD   -  BELTSVILLE (2016)
 JV5991
 JV5991                         *CURRENT SURVEY CONTROL
 JV5991  ______________________________________________________________________
 JV5991* NAD 83(1991) POSITION- 39 03 22.77218(N) 076 56 39.70779(W)   ADJUSTED
 JV5991* NAVD 88 ORTHO HEIGHT -    77.3   (meters)      254.    (feet) VERTCON3
 JV5991  ______________________________________________________________________
 JV5991  GEOID HEIGHT    -        -32.074 (meters)                     GEOID18
 JV5991  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 JV5991  HORZ ORDER      -  SECOND
 JV5991
 JV5991.The horizontal coordinates were established by classical geodetic methods
 JV5991.and adjusted by the National Geodetic Survey in January 1992.
 JV5991
 JV5991.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5991.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5991
 JV5991.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5991.GEOID18 height accuracy estimate available here.
 JV5991
 JV5991.Click photographs - Photos may exist for this station.
 JV5991
 JV5991.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5991
 JV5991. The following values were computed from the NAD 83(1991) position.
 JV5991
 JV5991;                    North         East     Units Scale Factor Converg.
 JV5991;SPC MD       -   154,260.429   404,815.568   MT  0.99995480   +0 02 05.7
 JV5991;SPC MD       -   506,102.76  1,328,132.41   sFT  0.99995480   +0 02 05.7
 JV5991;UTM  18      - 4,324,826.174   331,761.018   MT  0.99994853   -1 13 31.4
 JV5991
 JV5991!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5991!SPC MD       -   0.99999291  x   0.99995480  =   0.99994771
 JV5991!UTM  18      -   0.99999291  x   0.99994853  =   0.99994144
 JV5991
 JV5991_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3176124826(NAD 83)
 JV5991
 JV5991                          SUPERSEDED SURVEY CONTROL
 JV5991
 JV5991  NAD 83(1986)-  39 03 22.77122(N)    076 56 39.71821(W) AD(       ) 2
 JV5991  NAD 27      -  39 03 22.37895(N)    076 56 40.80880(W) AD(       ) 2
 JV5991  NGVD 29 (07/19/86)   77.5    (m)          254.     (f) VERT ANG       
 JV5991
 JV5991.Superseded values are not recommended for survey control.
 JV5991
 JV5991.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5991.See file dsdata.pdf to determine how the superseded data were derived.
 JV5991
 JV5991_MARKER: I = METAL ROD
 JV5991_SETTING: 0 = UNSPECIFIED SETTING
 JV5991_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5991
 JV5991  HISTORY     - Date     Condition        Report By
 JV5991  HISTORY     - 1969     MONUMENTED       WSSC
 JV5991
 JV5991                          STATION DESCRIPTION
 JV5991
 JV5991'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5991'THE STATION IS ON THE PRINCE GEORGES AND MONTGOMERY COUNTY
 JV5991'LINES AND IS THE SUBDIVISION OF CALVERTON.
 JV5991'
 JV5991'THE STATION IS ON THE NORTHWEST CORNER OF CALVERTON BOULEVARD
 JV5991'AND GALAWAY DRIVE.
 JV5991'
 JV5991'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5991'AND IS 2 INCHES BELOW THE SURFACE.  IT IS BETWEEN THE WALK AND
 JV5991'THE CURB AND IS 79.12 FEET SOUTHEAST OF THE SOUTHEAST CORNER
 JV5991'OF HOUSE 1220, 11.58 FEET SOUTH OF THE SOUTHWEST CORNER OF A
 JV5991'CONCRETE CATCH BASIN AND 1.7 FEET EAST OF THE EAST EDGE OF THE
 JV5991'WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6000 ***********************************************************************
 JV6000  DESIGNATION -  17253 WSSC 1969
 JV6000  PID         -  JV6000
 JV6000  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6000  COUNTRY     -  US
 JV6000  USGS QUAD   -  BELTSVILLE (2016)
 JV6000
 JV6000                         *CURRENT SURVEY CONTROL
 JV6000  ______________________________________________________________________
 JV6000* NAD 83(1991) POSITION- 39 01 39.40675(N) 076 57 48.74270(W)   ADJUSTED
 JV6000* NAVD 88 ORTHO HEIGHT -    80.7   (meters)      265.    (feet) VERTCON3
 JV6000  ______________________________________________________________________
 JV6000  GEOID HEIGHT    -        -32.053 (meters)                     GEOID18
 JV6000  LAPLACE CORR    -         -3.50  (seconds)                    DEFLEC18
 JV6000  HORZ ORDER      -  SECOND
 JV6000
 JV6000.The horizontal coordinates were established by classical geodetic methods
 JV6000.and adjusted by the National Geodetic Survey in January 1992.
 JV6000
 JV6000.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6000.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6000
 JV6000.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6000.GEOID18 height accuracy estimate available here.
 JV6000
 JV6000.Click photographs - Photos may exist for this station.
 JV6000
 JV6000.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6000
 JV6000. The following values were computed from the NAD 83(1991) position.
 JV6000
 JV6000;                    North         East     Units Scale Factor Converg.
 JV6000;SPC MD       -   151,072.170   403,157.055   MT  0.99995335   +0 01 22.4
 JV6000;SPC MD       -   495,642.61  1,322,691.10   sFT  0.99995335   +0 01 22.4
 JV6000;UTM  18      - 4,321,675.161   330,032.804   MT  0.99995573   -1 14 12.2
 JV6000
 JV6000!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6000!SPC MD       -   0.99999237  x   0.99995335  =   0.99994572
 JV6000!UTM  18      -   0.99999237  x   0.99995573  =   0.99994810
 JV6000
 JV6000:                Primary Azimuth Mark                     Grid Az
 JV6000:SPC MD       -  LIBRARY                                  098 12 30.6
 JV6000:UTM  18      -  LIBRARY                                  099 28 05.2
 JV6000
 JV6000_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3003221675(NAD 83)
 JV6000
 JV6000|---------------------------------------------------------------------|
 JV6000| PID    Reference Object                     Distance      Geod. Az  |
 JV6000|                                                           dddmmss.s |
 JV6000| JV5995 17254 WSSC 1969                     311.234 METERS 07048     |
 JV6000| JV5868 BELTSVILLE DA RSCH CTR S TANK       APPROX. 9.0 KM 0973026.7 |
 JV6000| JV5965 LIBRARY                             APPROX. 3.6 KM 0981353.0 |
 JV6000|---------------------------------------------------------------------|
 JV6000
 JV6000                          SUPERSEDED SURVEY CONTROL
 JV6000
 JV6000  NAD 83(1986)-  39 01 39.40591(N)    076 57 48.75337(W) AD(       ) 2
 JV6000  NAD 27      -  39 01 39.01207(N)    076 57 49.84184(W) AD(       ) 2
 JV6000  NGVD 29 (07/19/86)   80.9    (m)          265.     (f) VERT ANG       
 JV6000
 JV6000.Superseded values are not recommended for survey control.
 JV6000
 JV6000.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6000.See file dsdata.pdf to determine how the superseded data were derived.
 JV6000
 JV6000_MARKER: I = METAL ROD
 JV6000_SETTING: 0 = UNSPECIFIED SETTING
 JV6000_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6000
 JV6000  HISTORY     - Date     Condition        Report By
 JV6000  HISTORY     - 1969     MONUMENTED       WSSC
 JV6000
 JV6000                          STATION DESCRIPTION
 JV6000
 JV6000'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6000'THE STATION IS ABOUT 2 MILES SOUTHEAST OF WHITE OAK AND 1 MILE
 JV6000'EAST OF HILLANDALE.
 JV6000'
 JV6000'TO REACH THE STATION FROM THE INTERSECTION OF POWDER MILL ROAD
 JV6000'AND RIGGS ROAD (ROUE 212), GO NORTHEAST ON RIGGS ROAD FOR .2 MILE
 JV6000'TO THE U.S. NAVY RESERVE CENTER ON THE LEFT.  THE STATION IS
 JV6000'BETWEEN THE NORTHEAST CORNER OF THE BUILDING AND CONCRETE WALK.
 JV6000'
 JV6000'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV6000'AND IS FLUSH WITH THE SURFACE.  IT IS 20.09 FEET NORTHEAST
 JV6000'OF THE NORTHEAST CORNER OF THE BUILDING AND 3.0 FEET SOUTHWEST
 JV6000'OF THE SOUTHWEST EDGE OF THE WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5995 ***********************************************************************
 JV5995  DESIGNATION -  17254 WSSC 1969
 JV5995  PID         -  JV5995
 JV5995  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5995  COUNTRY     -  US
 JV5995  USGS QUAD   -  BELTSVILLE (2016)
 JV5995
 JV5995                         *CURRENT SURVEY CONTROL
 JV5995  ______________________________________________________________________
 JV5995* NAD 83(1991) POSITION- 39 01 42.72492(N) 076 57 36.52269(W)   ADJUSTED
 JV5995* NAVD 88 ORTHO HEIGHT -    75.9   (meters)      249.    (feet) VERTCON3
 JV5995  ______________________________________________________________________
 JV5995  GEOID HEIGHT    -        -32.059 (meters)                     GEOID18
 JV5995  LAPLACE CORR    -         -3.50  (seconds)                    DEFLEC18
 JV5995  HORZ ORDER      -  SECOND
 JV5995
 JV5995.The horizontal coordinates were established by classical geodetic methods
 JV5995.and adjusted by the National Geodetic Survey in January 1992.
 JV5995
 JV5995.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5995.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5995
 JV5995.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5995.GEOID18 height accuracy estimate available here.
 JV5995
 JV5995.Click photographs - Photos may exist for this station.
 JV5995
 JV5995.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5995
 JV5995. The following values were computed from the NAD 83(1991) position.
 JV5995
 JV5995;                    North         East     Units Scale Factor Converg.
 JV5995;SPC MD       -   151,174.613   403,450.931   MT  0.99995339   +0 01 30.1
 JV5995;SPC MD       -   495,978.71  1,323,655.26   sFT  0.99995339   +0 01 30.1
 JV5995;UTM  18      - 4,321,771.119   330,328.861   MT  0.99995449   -1 14 04.6
 JV5995
 JV5995!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5995!SPC MD       -   0.99999312  x   0.99995339  =   0.99994651
 JV5995!UTM  18      -   0.99999312  x   0.99995449  =   0.99994761
 JV5995
 JV5995_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3032821771(NAD 83)
 JV5995
 JV5995                          SUPERSEDED SURVEY CONTROL
 JV5995
 JV5995  NAD 83(1986)-  39 01 42.72406(N)    076 57 36.53334(W) AD(       ) 2
 JV5995  NAD 27      -  39 01 42.33027(N)    076 57 37.62220(W) AD(       ) 2
 JV5995  NGVD 29 (07/19/86)   76.1    (m)          250.     (f) VERT ANG       
 JV5995
 JV5995.Superseded values are not recommended for survey control.
 JV5995
 JV5995.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5995.See file dsdata.pdf to determine how the superseded data were derived.
 JV5995
 JV5995_MARKER: I = METAL ROD
 JV5995_SETTING: 0 = UNSPECIFIED SETTING
 JV5995_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5995
 JV5995  HISTORY     - Date     Condition        Report By
 JV5995  HISTORY     - 1969     MONUMENTED       WSSC
 JV5995
 JV5995                          STATION DESCRIPTION
 JV5995
 JV5995'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5995'THE STATION IS ABOUT 2 MILES SOUTHEAST OF WHITE OAK AND 1
 JV5995'MILE EAST OF HILLANDALE.
 JV5995'
 JV5995'THE STATION IS ON THE SOUTH SIDE OF KNOLLWOOD DRIVE ABOUT 50
 JV5995'FEET EAST OF RIGGS ROAD (ROUTE 212).
 JV5995'
 JV5995'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5995'AND IS 1-INCH BELOW THE SURFACE.  IT IS 15.31 FEET EAST OF THE
 JV5995'CENTER OF A MANHOLE, 83.34 FEET NORTHWEST OF THE NORTHWEST CORNER
 JV5995'OF HOUSE 2845, AND 5.4 FEET SOUTH OF THE SOUTH EDGE OF KNOLLWOOD
 JV5995'DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5982 ***********************************************************************
 JV5982  DESIGNATION -  17256 WSSC 1969
 JV5982  PID         -  JV5982
 JV5982  STATE/COUNTY-  MD/MONTGOMERY
 JV5982  COUNTRY     -  US
 JV5982  USGS QUAD   -  BELTSVILLE (2016)
 JV5982
 JV5982                         *CURRENT SURVEY CONTROL
 JV5982  ______________________________________________________________________
 JV5982* NAD 83(1991) POSITION- 39 04 35.43704(N) 076 55 43.72224(W)   ADJUSTED
 JV5982* NAVD 88 ORTHO HEIGHT -    83.1   (meters)      273.    (feet) VERTCON3
 JV5982  ______________________________________________________________________
 JV5982  GEOID HEIGHT    -        -32.092 (meters)                     GEOID18
 JV5982  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 JV5982  HORZ ORDER      -  SECOND
 JV5982
 JV5982.The horizontal coordinates were established by classical geodetic methods
 JV5982.and adjusted by the National Geodetic Survey in January 1992.
 JV5982
 JV5982.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5982.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5982
 JV5982.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5982.GEOID18 height accuracy estimate available here.
 JV5982
 JV5982.Click photographs - Photos may exist for this station.
 JV5982
 JV5982.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5982
 JV5982. The following values were computed from the NAD 83(1991) position.
 JV5982
 JV5982;                    North         East     Units Scale Factor Converg.
 JV5982;SPC MD       -   156,502.101   406,159.865   MT  0.99995596   +0 02 40.8
 JV5982;SPC MD       -   513,457.31  1,332,542.82   sFT  0.99995596   +0 02 40.8
 JV5982;UTM  18      - 4,327,037.709   333,154.291   MT  0.99994278   -1 12 58.0
 JV5982
 JV5982!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5982!SPC MD       -   0.99999200  x   0.99995596  =   0.99994796
 JV5982!UTM  18      -   0.99999200  x   0.99994278  =   0.99993478
 JV5982
 JV5982:                Primary Azimuth Mark                     Grid Az
 JV5982:SPC MD       -  POWDER RESET                             154 22 59.3
 JV5982:UTM  18      -  POWDER RESET                             155 38 38.1
 JV5982
 JV5982_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3315427037(NAD 83)
 JV5982
 JV5982|---------------------------------------------------------------------|
 JV5982| PID    Reference Object                     Distance      Geod. Az  |
 JV5982|                                                           dddmmss.s |
 JV5982| JV6900 POWDER RESET                        APPROX. 1.5 KM 1542540.1 |
 JV5982|---------------------------------------------------------------------|
 JV5982
 JV5982                          SUPERSEDED SURVEY CONTROL
 JV5982
 JV5982  NAD 83(1986)-  39 04 35.43603(N)    076 55 43.73245(W) AD(       ) 2
 JV5982  NAD 27      -  39 04 35.04436(N)    076 55 44.82495(W) AD(       ) 2
 JV5982  NGVD 29 (07/19/86)   83.3    (m)          273.     (f) VERT ANG       
 JV5982
 JV5982.Superseded values are not recommended for survey control.
 JV5982
 JV5982.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5982.See file dsdata.pdf to determine how the superseded data were derived.
 JV5982
 JV5982_MARKER: I = METAL ROD
 JV5982_SETTING: 0 = UNSPECIFIED SETTING
 JV5982_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5982
 JV5982  HISTORY     - Date     Condition        Report By
 JV5982  HISTORY     - 1969     MONUMENTED       WSSC
 JV5982
 JV5982                          STATION DESCRIPTION
 JV5982
 JV5982'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5982'THE STATION IS ABOUT 1-1/2 MILES NORTH OF CALVERTON AND
 JV5982'2-1/2 MILES SOUTH OF BURTONSVILLE.
 JV5982'
 JV5982'TO REACH THE STATION FROM THE INTERSECTION OF GUN POWDER
 JV5982'ROAD AND GREENCASTLE ROAD, GO WEST ON GREENCASTLE ROAD FOR .45
 JV5982'MILES TO A SHARP CURVE AND THE STATION IS ON THE LEFT.
 JV5982'
 JV5982'THE STATION MARK IS A CONCRETE MONUMENT WTH AN IRON ROD CENTER
 JV5982'AND PROJECTS 1-INCH ABOVE THE SURFACE.  IT IS 10.80 FEET SOUTHEAST
 JV5982'OF C AND P POLE NO. 74 1/2, 64.35 FEET SOUTH OF A 6-INCH
 JV5982'PINE, 31.42 FEET NORTHEAST OF A 15-INCH OAK AND 12.4 FEET SOUTH
 JV5982'OF THE SOUTH EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5987 ***********************************************************************
 JV5987  DESIGNATION -  17257 WSSC 1969
 JV5987  PID         -  JV5987
 JV5987  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5987  COUNTRY     -  US
 JV5987  USGS QUAD   -  BELTSVILLE (2016)
 JV5987
 JV5987                         *CURRENT SURVEY CONTROL
 JV5987  ______________________________________________________________________
 JV5987* NAD 83(1991) POSITION- 39 03 54.39689(N) 076 56 13.01621(W)   ADJUSTED
 JV5987* NAVD 88 ORTHO HEIGHT -    85.2   (meters)      280.    (feet) VERTCON3
 JV5987  ______________________________________________________________________
 JV5987  GEOID HEIGHT    -        -32.083 (meters)                     GEOID18
 JV5987  LAPLACE CORR    -         -3.66  (seconds)                    DEFLEC18
 JV5987  HORZ ORDER      -  SECOND
 JV5987
 JV5987.The horizontal coordinates were established by classical geodetic methods
 JV5987.and adjusted by the National Geodetic Survey in January 1992.
 JV5987
 JV5987.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5987.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5987
 JV5987.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5987.GEOID18 height accuracy estimate available here.
 JV5987
 JV5987.Click photographs - Photos may exist for this station.
 JV5987
 JV5987.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5987
 JV5987. The following values were computed from the NAD 83(1991) position.
 JV5987
 JV5987;                    North         East     Units Scale Factor Converg.
 JV5987;SPC MD       -   155,236.043   405,456.632   MT  0.99995529   +0 02 22.5
 JV5987;SPC MD       -   509,303.58  1,330,235.63   sFT  0.99995529   +0 02 22.5
 JV5987;UTM  18      - 4,325,787.443   332,423.383   MT  0.99994579   -1 13 15.4
 JV5987
 JV5987!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5987!SPC MD       -   0.99999167  x   0.99995529  =   0.99994696
 JV5987!UTM  18      -   0.99999167  x   0.99994579  =   0.99993746
 JV5987
 JV5987:                Primary Azimuth Mark                     Grid Az
 JV5987:SPC MD       -  POWDER RESET                             094 41 23.7
 JV5987:UTM  18      -  POWDER RESET                             095 57 01.6
 JV5987
 JV5987_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3242325787(NAD 83)
 JV5987
 JV5987|---------------------------------------------------------------------|
 JV5987| PID    Reference Object                     Distance      Geod. Az  |
 JV5987|                                                           dddmmss.s |
 JV5987| JV6900 POWDER RESET                        APPROX. 1.4 KM 0944346.2 |
 JV5987| JV5985 12873 WSSC 1969                      28.203 METERS 14624     |
 JV5987|---------------------------------------------------------------------|
 JV5987
 JV5987                          SUPERSEDED SURVEY CONTROL
 JV5987
 JV5987  NAD 83(1986)-  39 03 54.39594(N)    076 56 13.02654(W) AD(       ) 2
 JV5987  NAD 27      -  39 03 54.00364(N)    076 56 14.11813(W) AD(       ) 2
 JV5987  NGVD 29 (07/19/86)   85.4    (m)          280.     (f) VERT ANG       
 JV5987
 JV5987.Superseded values are not recommended for survey control.
 JV5987
 JV5987.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5987.See file dsdata.pdf to determine how the superseded data were derived.
 JV5987
 JV5987_MARKER: I = METAL ROD
 JV5987_SETTING: 0 = UNSPECIFIED SETTING
 JV5987_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5987
 JV5987  HISTORY     - Date     Condition        Report By
 JV5987  HISTORY     - 1969     MONUMENTED       WSSC
 JV5987
 JV5987                          STATION DESCRIPTION
 JV5987
 JV5987'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5987'THE STATION IS ABOUT 3 MILES SOUTH OF BURTONSVILLE AND 2 MILES
 JV5987'NORTHWEST OF BELTSVILLE.
 JV5987'
 JV5987'THE STATION IS ON THE NORTHWEST CORNER OF FAIRLAND ROAD AND
 JV5987'BRIGGS CHANEY ROAD.
 JV5987'
 JV5987'THE MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND IS
 JV5987'FLUSH WITH THE SURFACE.  IT IS 35.85 FEET NORTH OF POLE A.C. AND
 JV5987'P.B.C. 319719, 66.26 FEET NORTHWEST OF POLE A.C. AND P.B.C. 319720
 JV5987'AND 78.85 SOUTHWEST OF THE NORTHWEST CORNER OF HOUSE 3600.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4258 ***********************************************************************
 JV4258  DESIGNATION -  17259 WSSC 1969
 JV4258  PID         -  JV4258
 JV4258  STATE/COUNTY-  MD/MONTGOMERY
 JV4258  COUNTRY     -  US
 JV4258  USGS QUAD   -  SANDY SPRING (2016)
 JV4258
 JV4258                         *CURRENT SURVEY CONTROL
 JV4258  ______________________________________________________________________
 JV4258* NAD 83(1991) POSITION- 39 13 18.55841(N) 077 03 36.72628(W)   ADJUSTED
 JV4258* NAVD 88 ORTHO HEIGHT -   158.0   (meters)      518.    (feet) VERTCON3
 JV4258  ______________________________________________________________________
 JV4258  GEOID HEIGHT    -        -31.832 (meters)                     GEOID18
 JV4258  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 JV4258  HORZ ORDER      -  SECOND
 JV4258
 JV4258.The horizontal coordinates were established by classical geodetic methods
 JV4258.and adjusted by the National Geodetic Survey in January 1992.
 JV4258
 JV4258.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4258.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4258
 JV4258.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4258.GEOID18 height accuracy estimate available here.
 JV4258
 JV4258.Click photographs - Photos may exist for this station.
 JV4258
 JV4258.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4258
 JV4258. The following values were computed from the NAD 83(1991) position.
 JV4258
 JV4258;                    North         East     Units Scale Factor Converg.
 JV4258;SPC MD       -   172,633.031   394,801.429   MT  0.99996804   -0 02 16.0
 JV4258;SPC MD       -   566,380.20  1,295,277.69   sFT  0.99996804   -0 02 16.0
 JV4258;UTM  18      - 4,343,415.150   322,154.118   MT  0.99998946   -1 18 11.0
 JV4258
 JV4258!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4258!SPC MD       -   0.99998021  x   0.99996804  =   0.99994825
 JV4258!UTM  18      -   0.99998021  x   0.99998946  =   0.99996967
 JV4258
 JV4258_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2215443415(NAD 83)
 JV4258
 JV4258                          SUPERSEDED SURVEY CONTROL
 JV4258
 JV4258  NAD 83(1986)-  39 13 18.55813(N)    077 03 36.73611(W) AD(       ) 2
 JV4258  NAD 27      -  39 13 18.17502(N)    077 03 37.81214(W) AD(       ) 2
 JV4258  NGVD 29 (07/19/86)  158.2    (m)          519.     (f) VERT ANG       
 JV4258
 JV4258.Superseded values are not recommended for survey control.
 JV4258
 JV4258.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4258.See file dsdata.pdf to determine how the superseded data were derived.
 JV4258
 JV4258_MARKER: DD = SURVEY DISK
 JV4258_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV4258_SP_SET: 0.3 M WIDE ROAD CURB
 JV4258_MARK LOGO: WSSC
 JV4258_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV4258_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4258_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4258+SATELLITE: SATELLITE OBSERVATIONS - May 12, 2009
 JV4258
 JV4258  HISTORY     - Date     Condition        Report By
 JV4258  HISTORY     - 1969     MONUMENTED       WSSC
 JV4258  HISTORY     - 1969     GOOD             WSSC
 JV4258  HISTORY     - 19821117 GOOD             NGS
 JV4258  HISTORY     - 20090512 GOOD             JMTMD
 JV4258  HISTORY     - 20101120 MARK NOT FOUND   GEOCAC
 JV4258
 JV4258                          STATION DESCRIPTION
 JV4258
 JV4258'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4258'THE STATION IS LOCATED AT THE INTERSECTION OF ROUTE 650 AND
 JV4258'ROUTE 97 IN THE TOWN OF SUNSHINE, ON CHURCH PROPERTY AT THE
 JV4258'SOUTHWEST CORNER OF THE INTERSECTION.
 JV4258'
 JV4258'THE STATION MARK IS A STANDARD DISK STAMPED UNITY AZIMUTH MARK
 JV4258'IN THE TOP OF A CONCRETE WALL ON THE NORTH SIDE OF THE CHURCH
 JV4258'PROPERTY, 250 FEET WEST OF THE INTERSECTION.
 JV4258
 JV4258                          STATION RECOVERY (1969)
 JV4258
 JV4258'RECOVERY NOTE BY WASH SUBURB SAN COMM 1969
 JV4258'RECOVERED IN GOOD CONDITION.
 JV4258
 JV4258                          STATION RECOVERY (1982)
 JV4258
 JV4258'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1982
 JV4258'THE MARKER IS LOCATED ABOUT 15.7 KM (9.75 MI) SOUTHEAST OF DAMASCUS,
 JV4258'4.8 KM (3.00 MI) NORTH OF BROOKEVILLE, AND IN THE SMALL VILLAGE OF
 JV4258'SUNSHINE.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV4258'TO REACH FROM THE POST OFFICE IN DAMASCUS, GO SOUTHEAST ON STATE
 JV4258'HIGHWAY 108 (DAMASCUS ROAD) FOR 7.25 KM (4.50 MI) TO A SIDE ROAD RIGHT
 JV4258'WHERE STATE HIGHWAY 108 CURVES SOUTH.  CONTINUE STRAIGHT AHEAD AND GO
 JV4258'SOUTHEAST ON STATE HIGHWAY 650 (DAMASCUS ROAD) FOR 8.4 KM (5.20 MI) TO
 JV4258'THE MARKER ON THE RIGHT, JUST NORTHEAST OF THE MT. CARMEL METHODIST
 JV4258'CHURCH.
 JV4258'THE DISK IS SET IN A DRILL HOLE IN THE CURB WHICH PROJECTS ABOUT 0.1 M
 JV4258'(0.3 FT) ABOVE THE ROAD.  IT IS 13.85 M (45.4 FT) SOUTHWEST OF A
 JV4258'POWERLINE POLE NUMBERED 105496, 7.05 M (23.1 FT) SOUTHEAST OF A
 JV4258'POWERLINE POLE NUMBERED 326481, 5.95 M (19.5 FT) WEST-SOUTHWEST OF THE
 JV4258'CENTER OF STATE HIGHWAY 650 (DAMASCUS ROAD) AND 46.8 M (153.5 FT)
 JV4258'NORTHWEST OF THE CENTER OF STATE HIGHWAY 97 (GEORGIA AVENUE).
 JV4258
 JV4258                          STATION RECOVERY (2009)
 JV4258
 JV4258'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 JV4258'GOOD SITE FOR GPS (X,Y,Z, NOT CHECKED)
 JV4258
 JV4258                          STATION RECOVERY (2010)
 JV4258
 JV4258'RECOVERY NOTE BY GEOCACHING 2010 (KH)
 JV4258'NOT RECOVERED, NOT FOUND. AT THE STATION SITE STATE HIGHWAY 650 (NEW
 JV4258'HAMPSHIRE AVE) WAS RECENTLY RENEWED. NOW THERE ARE TWO LANES GOING
 JV4258'SOUTH-EAST. BEFORE THE RECONSTRUCTION IT WAS ONLY ONE LANE GOING
 JV4258'SOUTH-EAST WITH A SHOULDER. THE CURBS WERE TOTALLY RENEWED, NOW HIGHER
 JV4258'THAN BEFORE. FOUND ONLY SURVEY WITNESS POST LAYING NEARBY ON THE
 JV4258'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1443 ***********************************************************************
 HV1443  DESIGNATION -  1726 WSSC
 HV1443  PID         -  HV1443
 HV1443  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1443  COUNTRY     -  US
 HV1443  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1443
 HV1443                         *CURRENT SURVEY CONTROL
 HV1443  ______________________________________________________________________
 HV1443* NAD 83(1986) POSITION- 38 59 55.     (N) 076 55 54.     (W)   SCALED
 HV1443* NAVD 88 ORTHO HEIGHT -    32.870 (meters)      107.84  (feet) ADJUSTED
 HV1443  ______________________________________________________________________
 HV1443  GEOID HEIGHT    -        -32.132 (meters)                     GEOID18
 HV1443  DYNAMIC HEIGHT  -         32.853 (meters)      107.79  (feet) COMP
 HV1443  MODELED GRAVITY -    980,109.1   (mgal)                       NAVD 88
 HV1443
 HV1443  VERT ORDER      -  SECOND    CLASS 0
 HV1443
 HV1443.The horizontal coordinates were scaled from a map and have
 HV1443.an estimated accuracy of +/- 6 seconds.
 HV1443
 HV1443.The orthometric height was determined by differential leveling and
 HV1443.adjusted by the NATIONAL GEODETIC SURVEY
 HV1443.in June 1991.
 HV1443
 HV1443.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1443.GEOID18 height accuracy estimate available here.
 HV1443
 HV1443.Click photographs - Photos may exist for this station.
 HV1443
 HV1443.The dynamic height is computed by dividing the NAVD 88
 HV1443.geopotential number by the normal gravity value computed on the
 HV1443.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1443.degrees latitude (g = 980.6199 gals.).
 HV1443
 HV1443.The modeled gravity was interpolated from observed gravity values.
 HV1443
 HV1443;                    North         East    Units  Estimated Accuracy
 HV1443;SPC MD       -   147,850.      405,920.      MT  (+/- 180 meters Scaled)
 HV1443
 HV1443_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ327183(NAD 83)
 HV1443
 HV1443                          SUPERSEDED SURVEY CONTROL
 HV1443
 HV1443  NGVD 29 (11/26/84)   33.087  (m)          108.55   (f) ADJUSTED    2 0
 HV1443
 HV1443.Superseded values are not recommended for survey control.
 HV1443
 HV1443.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1443.See file dsdata.pdf to determine how the superseded data were derived.
 HV1443
 HV1443_MARKER: DD = SURVEY DISK
 HV1443_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1443_STAMPING: 1726
 HV1443_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1443
 HV1443  HISTORY     - Date     Condition        Report By
 HV1443  HISTORY     - UNK      MONUMENTED       WSSC
 HV1443  HISTORY     - 1951     GOOD             CGS
 HV1443
 HV1443                          STATION DESCRIPTION
 HV1443
 HV1443'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1443'AT BRANCHVILLE.
 HV1443'AT BRANCHVILLE, PRINCE GEORGES COUNTY, OPPOSITE THE JUNCTION
 HV1443'OF U.S. HIGHWAY 1 AND BRANCHVILLE ROAD, 28.5 FEET WEST OF THE
 HV1443'HIGHWAY, 84.5 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A HOUSE,
 HV1443'51.4 FEET NORTHEAST OF THE NORTHEAST CORNER OF ANOTHER HOUSE,
 HV1443'13.1 FEET FROM A 14-INCH CATALPA TREE, 110 FEET FROM A 10-INCH
 HV1443'WALNUT TREE, AND 6 FEET NORTH OF A FENCE.  A WASHINGTON SUBURBAN
 HV1443'SANITARY DISTRICT BRONZE DISK, STAMPED 1726 AND FASTENED TO THE
 HV1443'TOP OF AN IRON PIPE ABOUT 1 INCH UNDER GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4256 ***********************************************************************
 JV4256  DESIGNATION -  17260 WSSC 1969
 JV4256  PID         -  JV4256
 JV4256  STATE/COUNTY-  MD/MONTGOMERY
 JV4256  COUNTRY     -  US
 JV4256  USGS QUAD   -  SANDY SPRING (2016)
 JV4256
 JV4256                         *CURRENT SURVEY CONTROL
 JV4256  ______________________________________________________________________
 JV4256* NAD 83(1991) POSITION- 39 11 29.75112(N) 077 02 38.55974(W)   ADJUSTED
 JV4256* NAVD 88 ORTHO HEIGHT -   119.3   (meters)      391.    (feet) VERTCON3
 JV4256  ______________________________________________________________________
 JV4256  GEOID HEIGHT    -        -31.856 (meters)                     GEOID18
 JV4256  LAPLACE CORR    -         -3.03  (seconds)                    DEFLEC18
 JV4256  HORZ ORDER      -  SECOND
 JV4256
 JV4256.The horizontal coordinates were established by classical geodetic methods
 JV4256.and adjusted by the National Geodetic Survey in January 1992.
 JV4256
 JV4256.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4256.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4256
 JV4256.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4256.GEOID18 height accuracy estimate available here.
 JV4256
 JV4256.Click photographs - Photos may exist for this station.
 JV4256
 JV4256.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4256
 JV4256. The following values were computed from the NAD 83(1991) position.
 JV4256
 JV4256;                    North         East     Units Scale Factor Converg.
 JV4256;SPC MD       -   169,276.868   396,195.039   MT  0.99996500   -0 01 39.5
 JV4256;SPC MD       -   555,369.19  1,299,849.89   sFT  0.99996500   -0 01 39.5
 JV4256;UTM  18      - 4,340,028.975   323,473.334   MT  0.99998370   -1 17 31.2
 JV4256
 JV4256!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4256!SPC MD       -   0.99998628  x   0.99996500  =   0.99995128
 JV4256!UTM  18      -   0.99998628  x   0.99998370  =   0.99996998
 JV4256
 JV4256:                Primary Azimuth Mark                     Grid Az
 JV4256:SPC MD       -  TRIADEL RESET                            045 20 11.6
 JV4256:UTM  18      -  TRIADEL RESET                            046 36 03.3
 JV4256
 JV4256_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2347340028(NAD 83)
 JV4256
 JV4256|---------------------------------------------------------------------|
 JV4256| PID    Reference Object                     Distance      Geod. Az  |
 JV4256|                                                           dddmmss.s |
 JV4256| JV6588 TRIADEL RESET                       APPROX. 2.1 KM 0451832.1 |
 JV4256| JV4257 17261 WSSC 1969                     406.948 METERS 2081528.1 |
 JV4256|---------------------------------------------------------------------|
 JV4256
 JV4256                          SUPERSEDED SURVEY CONTROL
 JV4256
 JV4256  NAD 83(1986)-  39 11 29.75085(N)    077 02 38.56952(W) AD(       ) 2
 JV4256  NAD 27      -  39 11 29.36599(N)    077 02 39.64833(W) AD(       ) 2
 JV4256  NGVD 29 (07/19/86)  119.5    (m)          392.     (f) VERT ANG       
 JV4256
 JV4256.Superseded values are not recommended for survey control.
 JV4256
 JV4256.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4256.See file dsdata.pdf to determine how the superseded data were derived.
 JV4256
 JV4256_MARKER: I = METAL ROD
 JV4256_SETTING: 0 = UNSPECIFIED SETTING
 JV4256_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4256
 JV4256  HISTORY     - Date     Condition        Report By
 JV4256  HISTORY     - 1969     MONUMENTED       WSSC
 JV4256
 JV4256                          STATION DESCRIPTION
 JV4256
 JV4256'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4256'THE STATION IS ABOUT 1 MILE WEST OF BRIGHTON AND 1-1/4 MILE
 JV4256'NORTHEAST OF BROOKVILLE.
 JV4256'
 JV4256'TO REACH THE STATION FROM THE INTRSECTION OF BROOKVILLE ROAD
 JV4256'AND ROUTE 116, GO SOUTHWEST ON BROOKVILLE ROAD FOR 1.10 MILES TO
 JV4256'THE STATION ON THE LEFT.
 JV4256'
 JV4256'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4256'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 23.93 FEET
 JV4256'SOUTHEAST OF POWER LINE POLE 137889, 8.97 FEET WEST OF POWER
 JV4256'LINE POLE M-4045, 66.62 FEET NORTH OF 60-INCH TWIN ASH AND IS 6
 JV4256'FEET SOUTHEAST OF THE SOUTHEAST EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4257 ***********************************************************************
 JV4257  DESIGNATION -  17261 WSSC 1969
 JV4257  PID         -  JV4257
 JV4257  STATE/COUNTY-  MD/MONTGOMERY
 JV4257  COUNTRY     -  US
 JV4257  USGS QUAD   -  SANDY SPRING (2016)
 JV4257
 JV4257                         *CURRENT SURVEY CONTROL
 JV4257  ______________________________________________________________________
 JV4257* NAD 83(1991) POSITION- 39 11 18.12763(N) 077 02 46.58781(W)   ADJUSTED
 JV4257* NAVD 88 ORTHO HEIGHT -   116.9   (meters)      384.    (feet) VERTCON3
 JV4257  ______________________________________________________________________
 JV4257  GEOID HEIGHT    -        -31.852 (meters)                     GEOID18
 JV4257  LAPLACE CORR    -         -3.10  (seconds)                    DEFLEC18
 JV4257  HORZ ORDER      -  SECOND
 JV4257
 JV4257.The horizontal coordinates were established by classical geodetic methods
 JV4257.and adjusted by the National Geodetic Survey in January 1992.
 JV4257
 JV4257.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4257.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4257
 JV4257.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4257.GEOID18 height accuracy estimate available here.
 JV4257
 JV4257.Click photographs - Photos may exist for this station.
 JV4257
 JV4257.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4257
 JV4257. The following values were computed from the NAD 83(1991) position.
 JV4257
 JV4257;                    North         East     Units Scale Factor Converg.
 JV4257;SPC MD       -   168,918.523   396,002.208   MT  0.99996469   -0 01 44.6
 JV4257;SPC MD       -   554,193.52  1,299,217.24   sFT  0.99996469   -0 01 44.6
 JV4257;UTM  18      - 4,339,674.966   323,272.639   MT  0.99998458   -1 17 35.9
 JV4257
 JV4257!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4257!SPC MD       -   0.99998666  x   0.99996469  =   0.99995135
 JV4257!UTM  18      -   0.99998666  x   0.99998458  =   0.99997124
 JV4257
 JV4257_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2327239674(NAD 83)
 JV4257
 JV4257                          SUPERSEDED SURVEY CONTROL
 JV4257
 JV4257  NAD 83(1986)-  39 11 18.12736(N)    077 02 46.59760(W) AD(       ) 2
 JV4257  NAD 27      -  39 11 17.74233(N)    077 02 47.67617(W) AD(       ) 2
 JV4257  NGVD 29 (07/19/86)  117.1    (m)          384.     (f) VERT ANG       
 JV4257
 JV4257.Superseded values are not recommended for survey control.
 JV4257
 JV4257.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4257.See file dsdata.pdf to determine how the superseded data were derived.
 JV4257
 JV4257_MARKER: I = METAL ROD
 JV4257_SETTING: 0 = UNSPECIFIED SETTING
 JV4257_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4257
 JV4257  HISTORY     - Date     Condition        Report By
 JV4257  HISTORY     - 1969     MONUMENTED       WSSC
 JV4257
 JV4257                          STATION DESCRIPTION
 JV4257
 JV4257'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4257'THE STATION IS ABOUT 1 MILE NORTHEAST OF BROOKVILLE AND 1 MILE
 JV4257'WEST OF BRIGHTON.
 JV4257'
 JV4257'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 116 AND
 JV4257'BROOKVILLE ROAD, GO SOUTHWEST ON BROOKVILLE ROAD FOR 1.35 MILES
 JV4257'TO THE STATION ON THE RIGHT.
 JV4257'
 JV4257'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV4257'AND IS 1 INCH BELOW THE SURFACE.  IT IS 16.62 FEET EAST OF A
 JV4257'28-INCH OAK, 14.24 FEET WEST OF A 40-INCH OAK, 63.07 FEET
 JV4257'SOUTHWEST OF A 12-INCH WALNUT, 56.34 FEET WEST OF A 15-INCH CHERRY
 JV4257'AND IS 7.6 FEET NORTHWEST OF THE NORTHWEST EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1217 ***********************************************************************
 HV1217  DESIGNATION -  1729 WSSC
 HV1217  PID         -  HV1217
 HV1217  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1217  COUNTRY     -  US
 HV1217  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1217
 HV1217                         *CURRENT SURVEY CONTROL
 HV1217  ______________________________________________________________________
 HV1217* NAD 83(1986) POSITION- 38 53 12.     (N) 076 53 54.     (W)   SCALED
 HV1217* NAVD 88 ORTHO HEIGHT -    52.06  (+/-2cm)      170.8   (feet) VERTCON3
 HV1217  ______________________________________________________________________
 HV1217  GEOID HEIGHT    -        -32.365 (meters)                     GEOID18
 HV1217  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1217
 HV1217.The horizontal coordinates were scaled from a map and have
 HV1217.an estimated accuracy of +/- 6 seconds.
 HV1217
 HV1217.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1217.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1217
 HV1217.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1217.GEOID18 height accuracy estimate available here.
 HV1217
 HV1217.The vertical order pertains to the NGVD 29 superseded value.
 HV1217
 HV1217.Click photographs - Photos may exist for this station.
 HV1217
 HV1217;                    North         East    Units  Estimated Accuracy
 HV1217;SPC MD       -   135,430.      408,820.      MT  (+/- 180 meters Scaled)
 HV1217
 HV1217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ353059(NAD 83)
 HV1217
 HV1217                          SUPERSEDED SURVEY CONTROL
 HV1217
 HV1217  NGVD 29 (11/26/84)   52.298  (m)          171.58   (f) ADJUSTED    2 0
 HV1217
 HV1217.Superseded values are not recommended for survey control.
 HV1217
 HV1217.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1217.See file dsdata.pdf to determine how the superseded data were derived.
 HV1217
 HV1217_MARKER: DD = SURVEY DISK
 HV1217_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1217_SP_SET: BRIDGE ABUTMENT
 HV1217_STAMPING: 1729
 HV1217_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1217
 HV1217  HISTORY     - Date     Condition        Report By
 HV1217  HISTORY     - UNK      MONUMENTED       WSSC
 HV1217  HISTORY     - 1944     GOOD             WSSC
 HV1217
 HV1217                          STATION DESCRIPTION
 HV1217
 HV1217'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1217'0.3 MI E FROM SEAT PLEASANT.
 HV1217'ON CENTRAL AVENUE, AT THE BRIDGE OVER THE OLD CHESAPEAKE BEACH
 HV1217'RAILROAD, IN THE SOUTH END OF THE WEST ABUTMENT, AND ON THE SOUTH
 HV1217'SIDE OF THE AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1381 ***********************************************************************
 JV1381  DESIGNATION -  173
 JV1381  PID         -  JV1381
 JV1381  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1381  COUNTRY     -  US
 JV1381  USGS QUAD   -  ODENTON (2016)
 JV1381
 JV1381                         *CURRENT SURVEY CONTROL
 JV1381  ______________________________________________________________________
 JV1381* NAD 83(1986) POSITION- 39 04 30.     (N) 076 43 05.     (W)   SCALED
 JV1381* NAVD 88 ORTHO HEIGHT -    48.474 (meters)      159.04  (feet) ADJUSTED
 JV1381  ______________________________________________________________________
 JV1381  GEOID HEIGHT    -        -32.634 (meters)                     GEOID18
 JV1381  DYNAMIC HEIGHT  -         48.448 (meters)      158.95  (feet) COMP
 JV1381  MODELED GRAVITY -    980,083.8   (mgal)                       NAVD 88
 JV1381
 JV1381  VERT ORDER      -  FIRST     CLASS II
 JV1381
 JV1381.The horizontal coordinates were scaled from a map and have
 JV1381.an estimated accuracy of +/- 6 seconds.
 JV1381
 JV1381.The orthometric height was determined by differential leveling and
 JV1381.adjusted by the NATIONAL GEODETIC SURVEY
 JV1381.in June 1991.
 JV1381
 JV1381.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1381.GEOID18 height accuracy estimate available here.
 JV1381
 JV1381.Click photographs - Photos may exist for this station.
 JV1381
 JV1381.The dynamic height is computed by dividing the NAVD 88
 JV1381.geopotential number by the normal gravity value computed on the
 JV1381.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1381.degrees latitude (g = 980.6199 gals.).
 JV1381
 JV1381.The modeled gravity was interpolated from observed gravity values.
 JV1381
 JV1381;                    North         East    Units  Estimated Accuracy
 JV1381;SPC MD       -   156,370.      424,400.      MT  (+/- 180 meters Scaled)
 JV1381
 JV1381_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ513265(NAD 83)
 JV1381
 JV1381                          SUPERSEDED SURVEY CONTROL
 JV1381
 JV1381  NGVD 29 (11/26/84)   48.700  (m)          159.78   (f) ADJUSTED    1 2
 JV1381
 JV1381.Superseded values are not recommended for survey control.
 JV1381
 JV1381.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1381.See file dsdata.pdf to determine how the superseded data were derived.
 JV1381
 JV1381_MARKER: B = BOLT
 JV1381_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1381_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1381+STABILITY: SURFACE MOTION
 JV1381
 JV1381  HISTORY     - Date     Condition        Report By
 JV1381  HISTORY     - 1941     MONUMENTED       CGS
 JV1381
 JV1381                          STATION DESCRIPTION
 JV1381
 JV1381'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1381'1 MI SW FROM ODENTON.
 JV1381'ABOUT 1.0 MILE SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1381'THE STATION AT ODENTON, ANNE ARUNDEL COUNTY, 88 FEET NORTHEAST
 JV1381'OF THE NORTHERNMOST POWER-TRANSMISSION LINE TOWER, AT MILEAGE
 JV1381'114.78, 50 FEET NORTHWEST OF THE NORTHWEST RAIL OF THE NORTHWEST
 JV1381'TRACK, AND 5.5 FEET NORTH OF A 10-INCH PINE TREE.  AN IRON
 JV1381'BOLT, SET IN THE TOP OF A CONCRETE POST MARKED U S 173.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0673 ***********************************************************************
 HV0673  DESIGNATION -  173.3 USGS
 HV0673  PID         -  HV0673
 HV0673  STATE/COUNTY-  MD/ST MARYS
 HV0673  COUNTRY     -  US
 HV0673  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0673
 HV0673                         *CURRENT SURVEY CONTROL
 HV0673  ______________________________________________________________________
 HV0673* NAD 83(1986) POSITION- 38 27 49.     (N) 076 46 04.     (W)   SCALED
 HV0673* NAVD 88 ORTHO HEIGHT -    52.527 (meters)      172.33  (feet) ADJUSTED
 HV0673  ______________________________________________________________________
 HV0673  GEOID HEIGHT    -        -33.597 (meters)                     GEOID18
 HV0673  DYNAMIC HEIGHT  -         52.495 (meters)      172.23  (feet) COMP
 HV0673  MODELED GRAVITY -    980,016.4   (mgal)                       NAVD 88
 HV0673
 HV0673  VERT ORDER      -  FIRST     CLASS II
 HV0673
 HV0673.The horizontal coordinates were scaled from a map and have
 HV0673.an estimated accuracy of +/- 6 seconds.
 HV0673
 HV0673.The orthometric height was determined by differential leveling and
 HV0673.adjusted by the NATIONAL GEODETIC SURVEY
 HV0673.in June 1991.
 HV0673
 HV0673.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0673.GEOID18 height accuracy estimate available here.
 HV0673
 HV0673.Click photographs - Photos may exist for this station.
 HV0673
 HV0673.The dynamic height is computed by dividing the NAVD 88
 HV0673.geopotential number by the normal gravity value computed on the
 HV0673.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0673.degrees latitude (g = 980.6199 gals.).
 HV0673
 HV0673.The modeled gravity was interpolated from observed gravity values.
 HV0673
 HV0673;                    North         East    Units  Estimated Accuracy
 HV0673;SPC MD       -    88,490.      420,270.      MT  (+/- 180 meters Scaled)
 HV0673
 HV0673_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH457587(NAD 83)
 HV0673
 HV0673                          SUPERSEDED SURVEY CONTROL
 HV0673
 HV0673  NGVD 29 (11/26/84)   52.793  (m)          173.21   (f) ADJUSTED    1 2
 HV0673
 HV0673.Superseded values are not recommended for survey control.
 HV0673
 HV0673.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0673.See file dsdata.pdf to determine how the superseded data were derived.
 HV0673
 HV0673_MARKER: X = CHISELED CROSS
 HV0673_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0673_SP_SET: CULVERT
 HV0673_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0673
 HV0673  HISTORY     - Date     Condition        Report By
 HV0673  HISTORY     - UNK      MONUMENTED       USGS
 HV0673  HISTORY     - 1941     GOOD             CGS
 HV0673  HISTORY     - 1942     GOOD             CGS
 HV0673
 HV0673                          STATION DESCRIPTION
 HV0673
 HV0673'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0673'3 MI NW FROM MECHANICSVILLE.
 HV0673'ABOUT 3.0 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0673'OFFICE AT MECHANISVILLE, SAINT MARYS COUNTY, 32 FEET NORTHWEST
 HV0673'OF THE THIRD POLE NORTHWEST OF A SMALL STONE HOUSE SOUTHWEST OF
 HV0673'THE HIGHWAY, AT A 12-INCH CONCRETE CULVERT, ON THE CENTER OF
 HV0673'THE TOP OF THE SOUTHWEST HEAD WALL, AND 15 FEET SOUTHWEST OF THE
 HV0673'CENTER LINE OF THE HIGHWAY.  A CHISELED SQUARE, MARKED 173.3.
 HV0673'NOTE-- 2.2 MI NW ALONG STATE HIGHWAY 5 FROM THE POST OFFICE
 HV0673'AT MECHANICSVILLE, INSTEAD OF 3.0 MI.  NOTE-- 33 FT NW OF THE
 HV0673'THIRD POLE NW OF A SMALL STONE HOUSE, SW OF THE HIGHWAY INSTEAD
 HV0673'OF 32 FT.  NOTE-- THE SQUARE IS PAINTED BM 173.3 INSTEAD OF 173.3.
 HV0673
 HV0673                          STATION RECOVERY (1942)
 HV0673
 HV0673'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0673'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1000 ***********************************************************************
 HV1000  DESIGNATION -  173.62 USGS
 HV1000  PID         -  HV1000
 HV1000  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1000  COUNTRY     -  US
 HV1000  USGS QUAD   -  LANHAM (2016)
 HV1000
 HV1000                         *CURRENT SURVEY CONTROL
 HV1000  ______________________________________________________________________
 HV1000* NAD 83(1986) POSITION- 38 57 49.     (N) 076 51 29.     (W)   SCALED
 HV1000* NAVD 88 ORTHO HEIGHT -    52.700 (meters)      172.90  (feet) ADJUSTED
 HV1000  ______________________________________________________________________
 HV1000  GEOID HEIGHT    -        -32.362 (meters)                     GEOID18
 HV1000  DYNAMIC HEIGHT  -         52.672 (meters)      172.81  (feet) COMP
 HV1000  MODELED GRAVITY -    980,089.5   (mgal)                       NAVD 88
 HV1000
 HV1000  VERT ORDER      -  FIRST     CLASS II
 HV1000
 HV1000.The horizontal coordinates were scaled from a map and have
 HV1000.an estimated accuracy of +/- 6 seconds.
 HV1000
 HV1000.The orthometric height was determined by differential leveling and
 HV1000.adjusted by the NATIONAL GEODETIC SURVEY
 HV1000.in June 1991.
 HV1000
 HV1000.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1000.GEOID18 height accuracy estimate available here.
 HV1000
 HV1000.Click photographs - Photos may exist for this station.
 HV1000
 HV1000.The dynamic height is computed by dividing the NAVD 88
 HV1000.geopotential number by the normal gravity value computed on the
 HV1000.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1000.degrees latitude (g = 980.6199 gals.).
 HV1000
 HV1000.The modeled gravity was interpolated from observed gravity values.
 HV1000
 HV1000;                    North         East    Units  Estimated Accuracy
 HV1000;SPC MD       -   143,980.      412,300.      MT  (+/- 180 meters Scaled)
 HV1000
 HV1000_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ390143(NAD 83)
 HV1000
 HV1000                          SUPERSEDED SURVEY CONTROL
 HV1000
 HV1000  NGVD 29 (11/26/84)   52.922  (m)          173.63   (f) ADJUSTED    1 2
 HV1000
 HV1000.Superseded values are not recommended for survey control.
 HV1000
 HV1000.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1000.See file dsdata.pdf to determine how the superseded data were derived.
 HV1000
 HV1000_MARKER: Q = CHISELED SQUARE
 HV1000_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1000_SP_SET: ABUTMENT
 HV1000_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1000
 HV1000  HISTORY     - Date     Condition        Report By
 HV1000  HISTORY     - UNK      MONUMENTED       USGS
 HV1000  HISTORY     - 1941     GOOD             CGS
 HV1000  HISTORY     - 1943     GOOD             CGS
 HV1000
 HV1000                          STATION DESCRIPTION
 HV1000
 HV1000'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV1000'AT LANHAM.
 HV1000'AT LANHAM, PRINCE GEORGES COUNTY, ON U.S. HIGHWAY 50, 60 FEET
 HV1000'SOUTH OF POWER-TRANSMISSION LINE POLE 125-72, AT THE BRIDGE
 HV1000'OVER THE PENNSYLVANIA RAILROAD TRACK, ON THE TOP OF THE NORTH
 HV1000'CORNER OF THE EAST CONCRETE ABUTMENT, 17 FEET NORTH OF THE
 HV1000'CENTER LINE OF THE HIGHWAY, 1 FOOT NORTHEAST OF THE EAST END
 HV1000'OF THE GUARD FENCE, AND ABOUT 28 FEET HIGHER THAN THE TRACK.
 HV1000'A CHISELED SQUARE.
 HV1000
 HV1000                          STATION RECOVERY (1943)
 HV1000
 HV1000'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 HV1000'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1353 ***********************************************************************
 HV1353  DESIGNATION -  1730 WSSC
 HV1353  PID         -  HV1353
 HV1353  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1353  COUNTRY     -  US
 HV1353  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1353
 HV1353                         *CURRENT SURVEY CONTROL
 HV1353  ______________________________________________________________________
 HV1353* NAD 83(1986) POSITION- 38 56 28.     (N) 076 56 30.     (W)   SCALED
 HV1353* NAVD 88 ORTHO HEIGHT -     3.50  (+/-2cm)       11.5   (feet) VERTCON3
 HV1353  ______________________________________________________________________
 HV1353  GEOID HEIGHT    -        -32.179 (meters)                     GEOID18
 HV1353  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1353
 HV1353.The horizontal coordinates were scaled from a map and have
 HV1353.an estimated accuracy of +/- 6 seconds.
 HV1353
 HV1353.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1353.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1353
 HV1353.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1353.GEOID18 height accuracy estimate available here.
 HV1353
 HV1353.The vertical order pertains to the NGVD 29 superseded value.
 HV1353
 HV1353.Click photographs - Photos may exist for this station.
 HV1353
 HV1353;                    North         East    Units  Estimated Accuracy
 HV1353;SPC MD       -   141,470.      405,060.      MT  (+/- 180 meters Scaled)
 HV1353
 HV1353_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ317120(NAD 83)
 HV1353
 HV1353                          SUPERSEDED SURVEY CONTROL
 HV1353
 HV1353  NGVD 29 (11/26/84)    3.726  (m)           12.22   (f) ADJUSTED    2 0
 HV1353
 HV1353.Superseded values are not recommended for survey control.
 HV1353
 HV1353.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1353.See file dsdata.pdf to determine how the superseded data were derived.
 HV1353
 HV1353_MARKER: DD = SURVEY DISK
 HV1353_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1353_STAMPING: 1730
 HV1353_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1353
 HV1353  HISTORY     - Date     Condition        Report By
 HV1353  HISTORY     - UNK      MONUMENTED       WSSC
 HV1353  HISTORY     - 1944     GOOD             WSSC
 HV1353
 HV1353                          STATION DESCRIPTION
 HV1353
 HV1353'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1353'AT BLADENSBURG.
 HV1353'ON BALTIMORE AVENUE, 0.2 MILE SOUTH OF A BRIDGE OVER NORTHEAST
 HV1353'BRANCH, ON THE EAST SIDE OF THE AVENUE, AND IN THE PARKING IN
 HV1353'FRONT OF THE Q AND S LAUNDRY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2753 ***********************************************************************
 JV2753  DESIGNATION -  1733 WSSC
 JV2753  PID         -  JV2753
 JV2753  STATE/COUNTY-  MD/MONTGOMERY
 JV2753  COUNTRY     -  US
 JV2753  USGS QUAD   -  KENSINGTON (2016)
 JV2753
 JV2753                         *CURRENT SURVEY CONTROL
 JV2753  ______________________________________________________________________
 JV2753* NAD 83(1986) POSITION- 39 00 27.     (N) 077 01 13.     (W)   SCALED
 JV2753* NAVD 88 ORTHO HEIGHT -    73.119 (meters)      239.89  (feet) ADJUSTED
 JV2753  ______________________________________________________________________
 JV2753  GEOID HEIGHT    -        -31.974 (meters)                     GEOID18
 JV2753  DYNAMIC HEIGHT  -         73.080 (meters)      239.76  (feet) COMP
 JV2753  MODELED GRAVITY -    980,085.8   (mgal)                       NAVD 88
 JV2753
 JV2753  VERT ORDER      -  SECOND    CLASS 0
 JV2753
 JV2753.The horizontal coordinates were scaled from a map and have
 JV2753.an estimated accuracy of +/- 6 seconds.
 JV2753
 JV2753.The orthometric height was determined by differential leveling and
 JV2753.adjusted by the NATIONAL GEODETIC SURVEY
 JV2753.in June 1991.
 JV2753
 JV2753.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2753.GEOID18 height accuracy estimate available here.
 JV2753
 JV2753.Click photographs - Photos may exist for this station.
 JV2753
 JV2753.The dynamic height is computed by dividing the NAVD 88
 JV2753.geopotential number by the normal gravity value computed on the
 JV2753.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2753.degrees latitude (g = 980.6199 gals.).
 JV2753
 JV2753.The modeled gravity was interpolated from observed gravity values.
 JV2753
 JV2753;                    North         East    Units  Estimated Accuracy
 JV2753;SPC MD       -   148,840.      398,240.      MT  (+/- 180 meters Scaled)
 JV2753
 JV2753_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ250195(NAD 83)
 JV2753
 JV2753                          SUPERSEDED SURVEY CONTROL
 JV2753
 JV2753  NGVD 29 (11/26/84)   73.333  (m)          240.59   (f) ADJUSTED    2 0
 JV2753
 JV2753.Superseded values are not recommended for survey control.
 JV2753
 JV2753.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2753.See file dsdata.pdf to determine how the superseded data were derived.
 JV2753
 JV2753_MARKER: DD = SURVEY DISK
 JV2753_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2753_SP_SET: BRIDGE
 JV2753_STAMPING: 1733
 JV2753_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2753
 JV2753  HISTORY     - Date     Condition        Report By
 JV2753  HISTORY     - UNK      MONUMENTED       WSSC
 JV2753  HISTORY     - 1951     GOOD             CGS
 JV2753
 JV2753                          STATION DESCRIPTION
 JV2753
 JV2753'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2753'AT SEVEN OAKS.
 JV2753'AT SEVEN OAKS, MONTGOMERY COUNTY, NEAR THE INTERSECTION OF
 JV2753'COLESVILLE ROAD (U.S. HIGHWAY 29) AT SLIGO CREEK PARKWAY, AT
 JV2753'THE HIGHWAY BRIDGE OVER SLIGO CREEK, IN THE SOUTHEAST END OF THE
 JV2753'SOUTHWEST ABUTMENT, AND AT THE JUNCTION OF THE WINGWALL.  A
 JV2753'WASHINGTON SUBURBAN SANITARY DISTRICT BRONZE DISK, STAMPED 1733.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7242 ***********************************************************************
 HV7242  DESIGNATION -  17333 WSSC 1970
 HV7242  PID         -  HV7242
 HV7242  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7242  COUNTRY     -  US
 HV7242  USGS QUAD   -  BOWIE (2016)
 HV7242
 HV7242                         *CURRENT SURVEY CONTROL
 HV7242  ______________________________________________________________________
 HV7242* NAD 83(1991) POSITION- 38 55 41.33434(N) 076 42 34.91079(W)   ADJUSTED
 HV7242* NAVD 88 ORTHO HEIGHT -    36.2   (meters)      119.    (feet) VERTCON3
 HV7242  ______________________________________________________________________
 HV7242  GEOID HEIGHT    -        -32.842 (meters)                     GEOID18
 HV7242  LAPLACE CORR    -         -6.06  (seconds)                    DEFLEC18
 HV7242  HORZ ORDER      -  SECOND
 HV7242
 HV7242.The horizontal coordinates were established by classical geodetic methods
 HV7242.and adjusted by the National Geodetic Survey in January 1992.
 HV7242
 HV7242.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7242.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7242
 HV7242.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7242.GEOID18 height accuracy estimate available here.
 HV7242
 HV7242.Click photographs - Photos may exist for this station.
 HV7242
 HV7242.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7242
 HV7242. The following values were computed from the NAD 83(1991) position.
 HV7242
 HV7242;                    North         East     Units Scale Factor Converg.
 HV7242;SPC MD       -   140,070.035   425,171.987   MT  0.99995026   +0 10 55.9
 HV7242;SPC MD       -   459,546.44  1,394,918.43   sFT  0.99995026   +0 10 55.9
 HV7242;UTM  18      - 4,310,192.771   351,800.007   MT  0.99987045   -1 04 28.1
 HV7242
 HV7242!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7242!SPC MD       -   0.99999948  x   0.99995026  =   0.99994974
 HV7242!UTM  18      -   0.99999948  x   0.99987045  =   0.99986993
 HV7242
 HV7242:                Primary Azimuth Mark                     Grid Az
 HV7242:SPC MD       -  ANNE                                     157 25 04.7
 HV7242:UTM  18      -  ANNE                                     158 40 28.7
 HV7242
 HV7242_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5180010192(NAD 83)
 HV7242
 HV7242|---------------------------------------------------------------------|
 HV7242| PID    Reference Object                     Distance      Geod. Az  |
 HV7242|                                                           dddmmss.s |
 HV7242| HV7239 ANNE                                APPROX. 1.3 KM 1573600.6 |
 HV7242|---------------------------------------------------------------------|
 HV7242
 HV7242                          SUPERSEDED SURVEY CONTROL
 HV7242
 HV7242  NAD 83(1986)-  38 55 41.33088(N)    076 42 34.92199(W) AD(       ) 2
 HV7242  NAD 27      -  38 55 40.92984(N)    076 42 36.03912(W) AD(       ) 2
 HV7242  NGVD 29 (07/19/86)   36.4    (m)          119.     (f) VERT ANG       
 HV7242
 HV7242.Superseded values are not recommended for survey control.
 HV7242
 HV7242.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7242.See file dsdata.pdf to determine how the superseded data were derived.
 HV7242
 HV7242_MARKER: B = BOLT
 HV7242_SETTING: 0 = UNSPECIFIED SETTING
 HV7242_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7242
 HV7242  HISTORY     - Date     Condition        Report By
 HV7242  HISTORY     - 1969     MONUMENTED       WSSC
 HV7242
 HV7242                          STATION DESCRIPTION
 HV7242
 HV7242'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7242'THE STATION IS ABOUT 1.5 MILES SOUTHEAST OF THE INTERSECTION OF
 HV7242'ROUTE 50 (JOHN HANSON HIGHWAY) AND ROUTE 301.
 HV7242'
 HV7242'TO REACH THE STATION, GO SOUTH ON ROUTE 301, FROM THE
 HV7242'INTERSECTION OF ROUTE 50 FOR 1 MILE TO THE INTERSECTION OF MILL
 HV7242'BRANCH ROAD.  GO .6 MILES SOUTHEAST ON MILL BRANCH ROAD TO THE
 HV7242'STATION ON THE LEFT.
 HV7242'
 HV7242'THE STATION MARK IS A BRASS BOLT IN THE SOUTH END OF A CONCRETE
 HV7242'HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7246 ***********************************************************************
 HV7246  DESIGNATION -  17334 WSSC 1970
 HV7246  PID         -  HV7246
 HV7246  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7246  COUNTRY     -  US
 HV7246  USGS QUAD   -  BOWIE (2016)
 HV7246
 HV7246                         *CURRENT SURVEY CONTROL
 HV7246  ______________________________________________________________________
 HV7246* NAD 83(1991) POSITION- 38 55 57.12289(N) 076 42 51.17315(W)   ADJUSTED
 HV7246* NAVD 88 ORTHO HEIGHT -    29.0   (meters)       95.    (feet) VERTCON3
 HV7246  ______________________________________________________________________
 HV7246  GEOID HEIGHT    -        -32.821 (meters)                     GEOID18
 HV7246  LAPLACE CORR    -         -6.04  (seconds)                    DEFLEC18
 HV7246  HORZ ORDER      -  SECOND
 HV7246
 HV7246.The horizontal coordinates were established by classical geodetic methods
 HV7246.and adjusted by the National Geodetic Survey in January 1992.
 HV7246
 HV7246.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7246.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7246
 HV7246.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7246.GEOID18 height accuracy estimate available here.
 HV7246
 HV7246.Click photographs - Photos may exist for this station.
 HV7246
 HV7246.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7246
 HV7246. The following values were computed from the NAD 83(1991) position.
 HV7246
 HV7246;                    North         East     Units Scale Factor Converg.
 HV7246;SPC MD       -   140,555.648   424,778.769   MT  0.99995034   +0 10 45.7
 HV7246;SPC MD       -   461,139.66  1,393,628.34   sFT  0.99995034   +0 10 45.7
 HV7246;UTM  18      - 4,310,686.852   351,417.565   MT  0.99987185   -1 04 38.7
 HV7246
 HV7246!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7246!SPC MD       -   1.00000061  x   0.99995034  =   0.99995095
 HV7246!UTM  18      -   1.00000061  x   0.99987185  =   0.99987246
 HV7246
 HV7246_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5141710686(NAD 83)
 HV7246
 HV7246                          SUPERSEDED SURVEY CONTROL
 HV7246
 HV7246  NAD 83(1986)-  38 55 57.11947(N)    076 42 51.18428(W) AD(       ) 2
 HV7246  NAD 27      -  38 55 56.71868(N)    076 42 52.30088(W) AD(       ) 2
 HV7246  NGVD 29 (07/19/86)   29.2    (m)           96.     (f) VERT ANG       
 HV7246
 HV7246.Superseded values are not recommended for survey control.
 HV7246
 HV7246.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7246.See file dsdata.pdf to determine how the superseded data were derived.
 HV7246
 HV7246_MARKER: I = METAL ROD
 HV7246_SETTING: 0 = UNSPECIFIED SETTING
 HV7246_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7246
 HV7246  HISTORY     - Date     Condition        Report By
 HV7246  HISTORY     - 1969     MONUMENTED       WSSC
 HV7246
 HV7246                          STATION DESCRIPTION
 HV7246
 HV7246'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7246'THE STATION IS ABOUT 1.5 MILES SOUTHEAST OF THE INTERSECTION OF
 HV7246'ROUTE 50 (JOHN HANSON HIGHWAY) AND ROUTE 301.
 HV7246'
 HV7246'TO REACH THE STATION, GO SOUTH ON ROUTE 301 FROM THE INTERSECTION
 HV7246'OF ROUTE 50 FOR 1 MILE TO THE INTERSECTION OF MILL BRANCH ROAD. GO
 HV7246'.25 MILES TO THE STATION ON THE RIGHT.
 HV7246'
 HV7246'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7246'AND IS 1.0 FOOT BELOW THE SURFACE.  IT IS 84.36 FEET NORTHEAST OF
 HV7246'A NAIL IN THE TOP OF A FENCE POST, 68.52 FEET WEST OF THE CORNER
 HV7246'OF THE FENCE POST, AND 67.53 FEET SOUTHWEST OF AN X CUT IN A GUARD
 HV7246'RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7498 ***********************************************************************
 HV7498  DESIGNATION -  17335 WSSC 1970
 HV7498  PID         -  HV7498
 HV7498  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7498  COUNTRY     -  US
 HV7498  USGS QUAD   -  LANHAM (2016)
 HV7498
 HV7498                         *CURRENT SURVEY CONTROL
 HV7498  ______________________________________________________________________
 HV7498* NAD 83(1991) POSITION- 38 57 21.39198(N) 076 52 20.11119(W)   ADJUSTED
 HV7498* NAVD 88 ORTHO HEIGHT -    57.8   (meters)      190.    (feet) VERTCON3
 HV7498  ______________________________________________________________________
 HV7498  GEOID HEIGHT    -        -32.335 (meters)                     GEOID18
 HV7498  LAPLACE CORR    -         -5.22  (seconds)                    DEFLEC18
 HV7498  HORZ ORDER      -  SECOND
 HV7498
 HV7498.The horizontal coordinates were established by classical geodetic methods
 HV7498.and adjusted by the National Geodetic Survey in January 1992.
 HV7498
 HV7498.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7498.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7498
 HV7498.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7498.GEOID18 height accuracy estimate available here.
 HV7498
 HV7498.Click photographs - Photos may exist for this station.
 HV7498
 HV7498.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7498
 HV7498. The following values were computed from the NAD 83(1991) position.
 HV7498
 HV7498;                    North         East     Units Scale Factor Converg.
 HV7498;SPC MD       -   143,123.115   411,072.565   MT  0.99995082   +0 04 48.6
 HV7498;SPC MD       -   469,563.09  1,348,660.57   sFT  0.99995082   +0 04 48.6
 HV7498;UTM  18      - 4,313,554.263   337,771.714   MT  0.99992408   -1 10 38.6
 HV7498
 HV7498!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7498!SPC MD       -   0.99999601  x   0.99995082  =   0.99994683
 HV7498!UTM  18      -   0.99999601  x   0.99992408  =   0.99992009
 HV7498
 HV7498:                Primary Azimuth Mark                     Grid Az
 HV7498:SPC MD       -  ABBOTT                                   134 08 47.9
 HV7498:UTM  18      -  ABBOTT                                   135 24 15.1
 HV7498
 HV7498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3777113554(NAD 83)
 HV7498
 HV7498|---------------------------------------------------------------------|
 HV7498| PID    Reference Object                     Distance      Geod. Az  |
 HV7498|                                                           dddmmss.s |
 HV7498| HV7496 17336 WSSC 1970                     480.346 METERS 0541327.8 |
 HV7498| HV1126 ABBOTT                              APPROX. 2.1 KM 1341336.5 |
 HV7498| HV7471 NEW CARROLLTON EPIS CH SPIRE        153.171 METERS 21321     |
 HV7498| HV7826 NEW CARROLLTON FIRST BAP CH         APPROX. 0.6 KM 3104553.8 |
 HV7498|---------------------------------------------------------------------|
 HV7498
 HV7498                          SUPERSEDED SURVEY CONTROL
 HV7498
 HV7498  NAD 83(1986)-  38 57 21.39040(N)    076 52 20.12255(W) AD(       ) 2
 HV7498  NAD 27      -  38 57 20.99262(N)    076 52 21.22203(W) AD(       ) 2
 HV7498  NGVD 29 (07/19/86)   58.0    (m)          190.     (f) VERT ANG       
 HV7498
 HV7498.Superseded values are not recommended for survey control.
 HV7498
 HV7498.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7498.See file dsdata.pdf to determine how the superseded data were derived.
 HV7498
 HV7498_MARKER: I = METAL ROD
 HV7498_SETTING: 0 = UNSPECIFIED SETTING
 HV7498_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7498
 HV7498  HISTORY     - Date     Condition        Report By
 HV7498  HISTORY     - 1969     MONUMENTED       WSSC
 HV7498
 HV7498                          STATION DESCRIPTION
 HV7498
 HV7498'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7498'THE STATION IS AT NEW CARROLLTON ON ROUTE 450 (LANHAM-SEVERN
 HV7498'ROAD).
 HV7498'
 HV7498'TO REACH THE STATION FROM ROUTE 495 (CAPITAL BELTWAY), GO
 HV7498'SOUTHWEST ON ROUTE 450 FOR .4 MILES TO THE STATION ON THE LEFT.
 HV7498'
 HV7498'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7498'AND IS 9 INCHES BELOW THE SURFACE.  IT IS BETWEEN THE EASTBOUND
 HV7498'LANE AND MACADAM PARKING LOT, 42.24 FEET EAST OF THE SOUTHEAST
 HV7498'CORNER OF A CONCRETE SIGNAL BASE, 11.33 FEET SOUTHEAST OF A PK
 HV7498'NAIL IN THE CURB, 20.51 FEET SOUTHWEST OF A PK NAIL IN THE CURB
 HV7498'AND 17.12 FEET NORTH OF THE PARKING LOT CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7496 ***********************************************************************
 HV7496  DESIGNATION -  17336 WSSC 1970
 HV7496  PID         -  HV7496
 HV7496  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7496  COUNTRY     -  US
 HV7496  USGS QUAD   -  LANHAM (2016)
 HV7496
 HV7496                         *CURRENT SURVEY CONTROL
 HV7496  ______________________________________________________________________
 HV7496* NAD 83(1991) POSITION- 38 57 30.49802(N) 076 52 03.92514(W)   ADJUSTED
 HV7496* NAVD 88 ORTHO HEIGHT -    36.7   (meters)      120.    (feet) VERTCON3
 HV7496  ______________________________________________________________________
 HV7496  GEOID HEIGHT    -        -32.344 (meters)                     GEOID18
 HV7496  LAPLACE CORR    -         -5.18  (seconds)                    DEFLEC18
 HV7496  HORZ ORDER      -  SECOND
 HV7496
 HV7496.The horizontal coordinates were established by classical geodetic methods
 HV7496.and adjusted by the National Geodetic Survey in January 1992.
 HV7496
 HV7496.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7496.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7496
 HV7496.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7496.GEOID18 height accuracy estimate available here.
 HV7496
 HV7496.Click photographs - Photos may exist for this station.
 HV7496
 HV7496.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7496
 HV7496. The following values were computed from the NAD 83(1991) position.
 HV7496
 HV7496;                    North         East     Units Scale Factor Converg.
 HV7496;SPC MD       -   143,404.463   411,461.864   MT  0.99995089   +0 04 58.8
 HV7496;SPC MD       -   470,486.14  1,349,937.80   sFT  0.99995089   +0 04 58.8
 HV7496;UTM  18      - 4,313,826.991   338,167.082   MT  0.99992250   -1 10 28.6
 HV7496
 HV7496!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7496!SPC MD       -   0.99999932  x   0.99995089  =   0.99995021
 HV7496!UTM  18      -   0.99999932  x   0.99992250  =   0.99992182
 HV7496
 HV7496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3816713826(NAD 83)
 HV7496
 HV7496                          SUPERSEDED SURVEY CONTROL
 HV7496
 HV7496  NAD 83(1986)-  38 57 30.49642(N)    076 52 03.93647(W) AD(       ) 2
 HV7496  NAD 27      -  38 57 30.09865(N)    076 52 05.03633(W) AD(       ) 2
 HV7496  NGVD 29 (07/19/86)   36.9    (m)          121.     (f) VERT ANG       
 HV7496
 HV7496.Superseded values are not recommended for survey control.
 HV7496
 HV7496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7496.See file dsdata.pdf to determine how the superseded data were derived.
 HV7496
 HV7496_MARKER: I = METAL ROD
 HV7496_SETTING: 0 = UNSPECIFIED SETTING
 HV7496_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7496
 HV7496  HISTORY     - Date     Condition        Report By
 HV7496  HISTORY     - 1969     MONUMENTED       WSSC
 HV7496
 HV7496                          STATION DESCRIPTION
 HV7496
 HV7496'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7496'THE STATION IS AT NEW CARROLLTON ON ROUTE 450 (LANHAM-SEVERN
 HV7496'ROAD).
 HV7496'
 HV7496'TO REACH THE STATION FROM ROUTE 495 (CAPITAL BELTWAY), GO
 HV7496'SOUTHWEST ON ROUTE 450 FOR .07 MILES TO THE STATION ON THE LEFT.
 HV7496'
 HV7496'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7496'AND IS 7 INCHES BELOW THE SURFACE.  IT IS 23.28 FEET NORTHEAST
 HV7496'OF THE CENTER OF A BELL MANHOLE, 35.87 FEET NORTHEAST OF THE
 HV7496'CORNER OF A FENCE POST, 46.90 FEET WEST OF A LIGHT POST WITH AN X
 HV7496'CUT IN THE BASE, AND 89.89 FEET NORTHWEST OF PEPCO POLE NO.
 HV7496'866305.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7497 ***********************************************************************
 HV7497  DESIGNATION -  17337 WSSC 1970
 HV7497  PID         -  HV7497
 HV7497  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7497  COUNTRY     -  US
 HV7497  USGS QUAD   -  LANHAM (2016)
 HV7497
 HV7497                         *CURRENT SURVEY CONTROL
 HV7497  ______________________________________________________________________
 HV7497* NAD 83(1991) POSITION- 38 56 35.06032(N) 076 52 17.51428(W)   ADJUSTED
 HV7497* NAVD 88 ORTHO HEIGHT -    29.2   (meters)       96.    (feet) VERTCON3
 HV7497  ______________________________________________________________________
 HV7497  GEOID HEIGHT    -        -32.356 (meters)                     GEOID18
 HV7497  LAPLACE CORR    -         -5.07  (seconds)                    DEFLEC18
 HV7497  HORZ ORDER      -  SECOND
 HV7497
 HV7497.The horizontal coordinates were established by classical geodetic methods
 HV7497.and adjusted by the National Geodetic Survey in January 1992.
 HV7497
 HV7497.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7497.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7497
 HV7497.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7497.GEOID18 height accuracy estimate available here.
 HV7497
 HV7497.Click photographs - Photos may exist for this station.
 HV7497
 HV7497.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7497
 HV7497. The following values were computed from the NAD 83(1991) position.
 HV7497
 HV7497;                    North         East     Units Scale Factor Converg.
 HV7497;SPC MD       -   141,694.529   411,137.101   MT  0.99995053   +0 04 50.3
 HV7497;SPC MD       -   464,876.13  1,348,872.31   sFT  0.99995053   +0 04 50.3
 HV7497;UTM  18      - 4,312,124.642   337,804.884   MT  0.99992394   -1 10 35.8
 HV7497
 HV7497!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7497!SPC MD       -   1.00000050  x   0.99995053  =   0.99995103
 HV7497!UTM  18      -   1.00000050  x   0.99992394  =   0.99992444
 HV7497
 HV7497:                Primary Azimuth Mark                     Grid Az
 HV7497:SPC MD       -  ABBOTT                                   090 47 48.1
 HV7497:UTM  18      -  ABBOTT                                   092 03 14.2
 HV7497
 HV7497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3780412124(NAD 83)
 HV7497
 HV7497|---------------------------------------------------------------------|
 HV7497| PID    Reference Object                     Distance      Geod. Az  |
 HV7497|                                                           dddmmss.s |
 HV7497| HV1126 ABBOTT                              APPROX. 1.4 KM 0905238.4 |
 HV7497| HV7864 17338 WSSC 1970                     444.132 METERS 2801651.0 |
 HV7497|---------------------------------------------------------------------|
 HV7497
 HV7497                          SUPERSEDED SURVEY CONTROL
 HV7497
 HV7497  NAD 83(1986)-  38 56 35.05873(N)    076 52 17.52577(W) AD(       ) 2
 HV7497  NAD 27      -  38 56 34.65936(N)    076 52 18.62488(W) AD(       ) 2
 HV7497  NGVD 29 (07/19/86)   29.4    (m)           96.     (f) VERT ANG       
 HV7497
 HV7497.Superseded values are not recommended for survey control.
 HV7497
 HV7497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7497.See file dsdata.pdf to determine how the superseded data were derived.
 HV7497
 HV7497_MARKER: B = BOLT
 HV7497_SETTING: 0 = UNSPECIFIED SETTING
 HV7497_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7497
 HV7497  HISTORY     - Date     Condition        Report By
 HV7497  HISTORY     - 1969     MONUMENTED       WSSC
 HV7497
 HV7497                          STATION DESCRIPTION
 HV7497
 HV7497'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7497'THE STATION IS .2 MILES SOUTHEAST OF ROUTE 50 (JOHN HANSON
 HV7497'HIGHWAY), .7 MILES NORTHWEST OF ROUTE 704 (GEORGE PALMER
 HV7497'HIGHWAY) AND .7 MILES WEST OF ROUTE 495 (CAPITAL BELTWAY).
 HV7497'
 HV7497'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 704 AND
 HV7497'ARDWICK-ARDMORE ROAD, GO NORTHWEST ON ARDWICK-ARDMORE ROAD FOR .7
 HV7497'MILES TO ADAMS DRIVE.  TURN LEFT ON ADAMS DRIVE AND THE STATION
 HV7497'IS ON THE LEFT.
 HV7497'
 HV7497'THE STATION MARK IS A BRASS BOLT IN THE CONCRETE CURB OPPOSITE
 HV7497'THE CITIZENS BANK AT THE SOUTHEAST CORNER OF ADAMS DRIVE AND
 HV7497'ARDWICK-ARDMORE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7864 ***********************************************************************
 HV7864  DESIGNATION -  17338 WSSC 1970
 HV7864  PID         -  HV7864
 HV7864  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7864  COUNTRY     -  US
 HV7864  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7864
 HV7864                         *CURRENT SURVEY CONTROL
 HV7864  ______________________________________________________________________
 HV7864* NAD 83(1991) POSITION- 38 56 37.63037(N) 076 52 35.66073(W)   ADJUSTED
 HV7864* NAVD 88 ORTHO HEIGHT -    35.1   (meters)      115.    (feet) VERTCON3
 HV7864  ______________________________________________________________________
 HV7864  GEOID HEIGHT    -        -32.342 (meters)                     GEOID18
 HV7864  LAPLACE CORR    -         -5.12  (seconds)                    DEFLEC18
 HV7864  HORZ ORDER      -  SECOND
 HV7864
 HV7864.The horizontal coordinates were established by classical geodetic methods
 HV7864.and adjusted by the National Geodetic Survey in January 1992.
 HV7864
 HV7864.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7864.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7864
 HV7864.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7864.GEOID18 height accuracy estimate available here.
 HV7864
 HV7864.Click photographs - Photos may exist for this station.
 HV7864
 HV7864.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7864
 HV7864. The following values were computed from the NAD 83(1991) position.
 HV7864
 HV7864;                    North         East     Units Scale Factor Converg.
 HV7864;SPC MD       -   141,773.175   410,700.010   MT  0.99995055   +0 04 38.9
 HV7864;SPC MD       -   465,134.16  1,347,438.28   sFT  0.99995055   +0 04 38.9
 HV7864;UTM  18      - 4,312,212.858   337,369.635   MT  0.99992569   -1 10 47.3
 HV7864
 HV7864!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7864!SPC MD       -   0.99999957  x   0.99995055  =   0.99995012
 HV7864!UTM  18      -   0.99999957  x   0.99992569  =   0.99992526
 HV7864
 HV7864_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3736912212(NAD 83)
 HV7864
 HV7864                          SUPERSEDED SURVEY CONTROL
 HV7864
 HV7864  NAD 83(1986)-  38 56 37.62882(N)    076 52 35.67221(W) AD(       ) 2
 HV7864  NAD 27      -  38 56 37.22952(N)    076 52 36.77075(W) AD(       ) 2
 HV7864  NGVD 29 (07/19/86)   35.3    (m)          116.     (f) VERT ANG       
 HV7864
 HV7864.Superseded values are not recommended for survey control.
 HV7864
 HV7864.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7864.See file dsdata.pdf to determine how the superseded data were derived.
 HV7864
 HV7864_MARKER: I = METAL ROD
 HV7864_SETTING: 0 = UNSPECIFIED SETTING
 HV7864_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7864
 HV7864  HISTORY     - Date     Condition        Report By
 HV7864  HISTORY     - 1969     MONUMENTED       WSSC
 HV7864
 HV7864                          STATION DESCRIPTION
 HV7864
 HV7864'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7864'THE STATION IS .8 MILE WEST OF THE INTERSECTION OF ROUTE 495
 HV7864'(CAPITAL BELTWAY) AND ROUTE 50 (JOHN HANSON HIGHWAY) AND 1.4
 HV7864'MILES NORTHEAST OF THE INTERSECTION OF ROUTE 202 (LANDOVER ROAD)
 HV7864'AND ROUTE 50.
 HV7864'
 HV7864'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 202 AND
 HV7864'ROUTE 50, GO NORTHEAST ON ROUTE 50 FOR 1.4 MILES TO THE
 HV7864'PENNSYLVANIA RAILROAD BRIDGE AND THE STATION IS ON THE LEFT.
 HV7864'
 HV7864'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7864'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 7.22 FEET EAST OF THE
 HV7864'NORTHEAST CORNER OF THE BRIDGE, 3.79 FEET SOUTH OF A CUT NAIL IN
 HV7864'A CONCRETE CURB, AND 10.49 FEET SOUTHWEST OF A CUT NAIL IN A
 HV7864'CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7488 ***********************************************************************
 HV7488  DESIGNATION -  17339 WSSC 1970
 HV7488  PID         -  HV7488
 HV7488  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7488  COUNTRY     -  US
 HV7488  USGS QUAD   -  LANHAM (2016)
 HV7488
 HV7488                         *CURRENT SURVEY CONTROL
 HV7488  ______________________________________________________________________
 HV7488* NAD 83(1991) POSITION- 38 57 54.14312(N) 076 50 35.08560(W)   ADJUSTED
 HV7488* NAVD 88 ORTHO HEIGHT -    52.6   (meters)      173.    (feet) VERTCON3
 HV7488  ______________________________________________________________________
 HV7488  GEOID HEIGHT    -        -32.401 (meters)                     GEOID18
 HV7488  LAPLACE CORR    -         -5.30  (seconds)                    DEFLEC18
 HV7488  HORZ ORDER      -  SECOND
 HV7488
 HV7488.The horizontal coordinates were established by classical geodetic methods
 HV7488.and adjusted by the National Geodetic Survey in January 1992.
 HV7488
 HV7488.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7488.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7488
 HV7488.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7488.GEOID18 height accuracy estimate available here.
 HV7488
 HV7488.Click photographs - Photos may exist for this station.
 HV7488
 HV7488.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7488
 HV7488. The following values were computed from the NAD 83(1991) position.
 HV7488
 HV7488;                    North         East     Units Scale Factor Converg.
 HV7488;SPC MD       -   144,136.968   413,599.488   MT  0.99995106   +0 05 54.6
 HV7488;SPC MD       -   472,889.37  1,356,950.99   sFT  0.99995106   +0 05 54.6
 HV7488;UTM  18      - 4,314,512.378   340,320.198   MT  0.99991397   -1 09 33.3
 HV7488
 HV7488!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7488!SPC MD       -   0.99999684  x   0.99995106  =   0.99994790
 HV7488!UTM  18      -   0.99999684  x   0.99991397  =   0.99991081
 HV7488
 HV7488:                Primary Azimuth Mark                     Grid Az
 HV7488:SPC MD       -  ABBOTT                                   202 47 33.4
 HV7488:UTM  18      -  ABBOTT                                   204 03 01.3
 HV7488
 HV7488_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4032014512(NAD 83)
 HV7488
 HV7488|---------------------------------------------------------------------|
 HV7488| PID    Reference Object                     Distance      Geod. Az  |
 HV7488|                                                           dddmmss.s |
 HV7488| HV1126 ABBOTT                              APPROX. 2.7 KM 2025328.0 |
 HV7488| HV7489 17340 WSSC 1970                     245.001 METERS 28421     |
 HV7488|---------------------------------------------------------------------|
 HV7488
 HV7488                          SUPERSEDED SURVEY CONTROL
 HV7488
 HV7488  NAD 83(1986)-  38 57 54.14134(N)    076 50 35.09686(W) AD(       ) 2
 HV7488  NAD 27      -  38 57 53.74307(N)    076 50 36.19905(W) AD(       ) 2
 HV7488  NGVD 29 (07/19/86)   52.8    (m)          173.     (f) VERT ANG       
 HV7488
 HV7488.Superseded values are not recommended for survey control.
 HV7488
 HV7488.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7488.See file dsdata.pdf to determine how the superseded data were derived.
 HV7488
 HV7488_MARKER: B = BOLT
 HV7488_SETTING: 0 = UNSPECIFIED SETTING
 HV7488_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7488
 HV7488  HISTORY     - Date     Condition        Report By
 HV7488  HISTORY     - 1969     MONUMENTED       WSSC
 HV7488
 HV7488                          STATION DESCRIPTION
 HV7488
 HV7488'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7488'THE STATION IS SOUTH OF SEABROOK ON THE NORTH SIDE OF ROUTE 450
 HV7488'(LANHAM-SEVERN ROAD), 1.3 MILES NORTHEAST OF THE INTERSECTION
 HV7488'OF ROUTE 450 AND ROUTE 495 (CAPITAL BELTWAY).
 HV7488'
 HV7488'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 495 AND
 HV7488'ROUTE 450, GO NORTHEAST ON ROUTE 450 ACROSS THE PENNSYLVANIA
 HV7488'RAILROAD BRIDGE, 1.3 MILES FROM ROUTE 495 TO THE STATION ON THE
 HV7488'LEFT.
 HV7488'
 HV7488'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CURB, NORTHEAST
 HV7488'OF G AND E POLE NO. 332358, STATION IS SOUTH OF THE ENTERPRISE
 HV7488'INN AND ON THE NORTH SIDE OF ROUTE 450.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1434 ***********************************************************************
 JV1434  DESIGNATION -  1734 WSSC
 JV1434  PID         -  JV1434
 JV1434  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1434  COUNTRY     -  US
 JV1434  USGS QUAD   -  BELTSVILLE (2016)
 JV1434
 JV1434                         *CURRENT SURVEY CONTROL
 JV1434  ______________________________________________________________________
 JV1434* NAD 83(1986) POSITION- 39 00 04.     (N) 076 56 52.     (W)   SCALED
 JV1434* NAVD 88 ORTHO HEIGHT -    45.050 (meters)      147.80  (feet) ADJUSTED
 JV1434  ______________________________________________________________________
 JV1434  GEOID HEIGHT    -        -32.096 (meters)                     GEOID18
 JV1434  DYNAMIC HEIGHT  -         45.026 (meters)      147.72  (feet) COMP
 JV1434  MODELED GRAVITY -    980,107.1   (mgal)                       NAVD 88
 JV1434
 JV1434  VERT ORDER      -  SECOND    CLASS 0
 JV1434
 JV1434.The horizontal coordinates were scaled from a map and have
 JV1434.an estimated accuracy of +/- 6 seconds.
 JV1434
 JV1434.The orthometric height was determined by differential leveling and
 JV1434.adjusted by the NATIONAL GEODETIC SURVEY
 JV1434.in June 1991.
 JV1434
 JV1434.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1434.GEOID18 height accuracy estimate available here.
 JV1434
 JV1434.Click photographs - Photos may exist for this station.
 JV1434
 JV1434.The dynamic height is computed by dividing the NAVD 88
 JV1434.geopotential number by the normal gravity value computed on the
 JV1434.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1434.degrees latitude (g = 980.6199 gals.).
 JV1434
 JV1434.The modeled gravity was interpolated from observed gravity values.
 JV1434
 JV1434;                    North         East    Units  Estimated Accuracy
 JV1434;SPC MD       -   148,130.      404,520.      MT  (+/- 180 meters Scaled)
 JV1434
 JV1434_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ313187(NAD 83)
 JV1434
 JV1434                          SUPERSEDED SURVEY CONTROL
 JV1434
 JV1434  NGVD 29 (11/26/84)   45.267  (m)          148.51   (f) ADJUSTED    2 0
 JV1434
 JV1434.Superseded values are not recommended for survey control.
 JV1434
 JV1434.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1434.See file dsdata.pdf to determine how the superseded data were derived.
 JV1434
 JV1434_MARKER: DD = SURVEY DISK
 JV1434_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1434_STAMPING: 1734
 JV1434_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1434
 JV1434  HISTORY     - Date     Condition        Report By
 JV1434  HISTORY     - UNK      MONUMENTED       WSSC
 JV1434  HISTORY     - 1951     GOOD             CGS
 JV1434
 JV1434                          STATION DESCRIPTION
 JV1434
 JV1434'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1434'1.3 MI E FROM ADELPHI.
 JV1434'ABOUT 1.3 MILES EAST ALONG METZROTT ROAD FROM THE INTERSECTION
 JV1434'OF RIGGS ROAD AT ADELPHI, PRINCE GEORGES COUNTY, ABOUT 0.9 MILE
 JV1434'WEST OF THE JUNCTION OF U.S. HIGHWAY 1 AT BRANCHVILLE, IN A LAWN
 JV1434'ON THE SOUTH SIDE OF THE ROAD, 97.4 FEET SOUTH ACROSS THE ROAD
 JV1434'FROM THE SOUTHWEST CORNER OF A HOUSE (PORCH), 53.0 FEET
 JV1434'SOUTHWEST ACROSS THE ROAD FROM A POLE, 87.3 FEET EAST OF AN
 JV1434'18 IN OAK ON THE NEXT LAWN WEST, 85.4 FEET WESTERLY FROM THE
 JV1434'NORTHWEST CORNER OF THE HOUSE ON THE NEXT LOT EAST, AND 3 FEET
 JV1434'SOUTH OF A PRIVET HEDGE.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV1434'BRONZE DISK, STAMPED 1734, AND FASTENED TO THE TOP OF AN IRON
 JV1434'PIPE PROJECTING ABOUT 2 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7489 ***********************************************************************
 HV7489  DESIGNATION -  17340 WSSC 1970
 HV7489  PID         -  HV7489
 HV7489  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7489  COUNTRY     -  US
 HV7489  USGS QUAD   -  LANHAM (2016)
 HV7489
 HV7489                         *CURRENT SURVEY CONTROL
 HV7489  ______________________________________________________________________
 HV7489* NAD 83(1991) POSITION- 38 57 56.11298(N) 076 50 44.94458(W)   ADJUSTED
 HV7489* NAVD 88 ORTHO HEIGHT -    48.6   (meters)      159.    (feet) VERTCON3
 HV7489  ______________________________________________________________________
 HV7489  GEOID HEIGHT    -        -32.393 (meters)                     GEOID18
 HV7489  LAPLACE CORR    -         -5.27  (seconds)                    DEFLEC18
 HV7489  HORZ ORDER      -  SECOND
 HV7489
 HV7489.The horizontal coordinates were established by classical geodetic methods
 HV7489.and adjusted by the National Geodetic Survey in January 1992.
 HV7489
 HV7489.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7489.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7489
 HV7489.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7489.GEOID18 height accuracy estimate available here.
 HV7489
 HV7489.Click photographs - Photos may exist for this station.
 HV7489
 HV7489.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7489
 HV7489. The following values were computed from the NAD 83(1991) position.
 HV7489
 HV7489;                    North         East     Units Scale Factor Converg.
 HV7489;SPC MD       -   144,197.306   413,362.045   MT  0.99995107   +0 05 48.4
 HV7489;SPC MD       -   473,087.33  1,356,171.98   sFT  0.99995107   +0 05 48.4
 HV7489;UTM  18      - 4,314,577.911   340,084.146   MT  0.99991490   -1 09 39.6
 HV7489
 HV7489!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7489!SPC MD       -   0.99999746  x   0.99995107  =   0.99994853
 HV7489!UTM  18      -   0.99999746  x   0.99991490  =   0.99991236
 HV7489
 HV7489_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4008414577(NAD 83)
 HV7489
 HV7489                          SUPERSEDED SURVEY CONTROL
 HV7489
 HV7489  NAD 83(1986)-  38 57 56.11121(N)    076 50 44.95583(W) AD(       ) 2
 HV7489  NAD 27      -  38 57 55.71298(N)    076 50 46.05770(W) AD(       ) 2
 HV7489  NGVD 29 (07/19/86)   48.8    (m)          160.     (f) VERT ANG       
 HV7489
 HV7489.Superseded values are not recommended for survey control.
 HV7489
 HV7489.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7489.See file dsdata.pdf to determine how the superseded data were derived.
 HV7489
 HV7489_MARKER: B = BOLT
 HV7489_SETTING: 0 = UNSPECIFIED SETTING
 HV7489_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7489
 HV7489  HISTORY     - Date     Condition        Report By
 HV7489  HISTORY     - 1969     MONUMENTED       WSSC
 HV7489
 HV7489                          STATION DESCRIPTION
 HV7489
 HV7489'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7489'THE STATION IS SOUTH OF SEABROOK ON THE NORTH SIDE OF ROUTE 450
 HV7489'(LANHAM-SEVERN ROAD), 1.2 MILES NORTHEAST OF THE INTERSECTION
 HV7489'OF ROUTE 450 AND ROUTE 495 (CAPITAL BELTWAY).
 HV7489'
 HV7489'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 495 AND
 HV7489'ROUTE 450, GO NORTHEAST ON ROUTE 450 ACROSS THE PENNSYLVANIA
 HV7489'RAILROAD BRIDGE, 1.2 MILES FROM ROUTE 495 TO THE STATION ON THE
 HV7489'LEFT.
 HV7489'
 HV7489'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CURB AT THE WEST
 HV7489'END OF AN ATLANTIC GAS STATION ON THE NORTH SIDE OF ROUTE 450.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7495 ***********************************************************************
 HV7495  DESIGNATION -  17341 WSSC 1970
 HV7495  PID         -  HV7495
 HV7495  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7495  COUNTRY     -  US
 HV7495  USGS QUAD   -  LANHAM (2016)
 HV7495
 HV7495                         *CURRENT SURVEY CONTROL
 HV7495  ______________________________________________________________________
 HV7495* NAD 83(1991) POSITION- 38 55 01.82571(N) 076 51 11.10187(W)   ADJUSTED
 HV7495* NAVD 88 ORTHO HEIGHT -    59.8   (meters)      196.    (feet) VERTCON3
 HV7495  ______________________________________________________________________
 HV7495  GEOID HEIGHT    -        -32.440 (meters)                     GEOID18
 HV7495  LAPLACE CORR    -         -4.99  (seconds)                    DEFLEC18
 HV7495  HORZ ORDER      -  SECOND
 HV7495
 HV7495.The horizontal coordinates were established by classical geodetic methods
 HV7495.and adjusted by the National Geodetic Survey in January 1992.
 HV7495
 HV7495.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7495.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7495
 HV7495.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7495.GEOID18 height accuracy estimate available here.
 HV7495
 HV7495.Click photographs - Photos may exist for this station.
 HV7495
 HV7495.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7495
 HV7495. The following values were computed from the NAD 83(1991) position.
 HV7495
 HV7495;                    North         East     Units Scale Factor Converg.
 HV7495;SPC MD       -   138,821.987   412,741.001   MT  0.99995011   +0 05 32.0
 HV7495;SPC MD       -   455,451.80  1,354,134.43   sFT  0.99995011   +0 05 32.0
 HV7495;UTM  18      - 4,309,217.695   339,345.343   MT  0.99991782   -1 09 51.7
 HV7495
 HV7495!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7495!SPC MD       -   0.99999571  x   0.99995011  =   0.99994582
 HV7495!UTM  18      -   0.99999571  x   0.99991782  =   0.99991353
 HV7495
 HV7495:                Primary Azimuth Mark                     Grid Az
 HV7495:SPC MD       -  ABBOTT                                   356 27 56.4
 HV7495:UTM  18      -  ABBOTT                                   357 43 20.1
 HV7495
 HV7495_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3934509217(NAD 83)
 HV7495
 HV7495|---------------------------------------------------------------------|
 HV7495| PID    Reference Object                     Distance      Geod. Az  |
 HV7495|                                                           dddmmss.s |
 HV7495| HV7493 17342 WSSC 1970                     266.198 METERS 08538     |
 HV7495| HV1126 ABBOTT                              APPROX. 2.9 KM 3563328.4 |
 HV7495|---------------------------------------------------------------------|
 HV7495
 HV7495                          SUPERSEDED SURVEY CONTROL
 HV7495
 HV7495  NAD 83(1986)-  38 55 01.82400(N)    076 51 11.11368(W) AD(       ) 2
 HV7495  NAD 27      -  38 55 01.42313(N)    076 51 12.21508(W) AD(       ) 2
 HV7495  NGVD 29 (07/19/86)   60.0    (m)          197.     (f) VERT ANG       
 HV7495
 HV7495.Superseded values are not recommended for survey control.
 HV7495
 HV7495.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7495.See file dsdata.pdf to determine how the superseded data were derived.
 HV7495
 HV7495_MARKER: I = METAL ROD
 HV7495_SETTING: 0 = UNSPECIFIED SETTING
 HV7495_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7495
 HV7495  HISTORY     - Date     Condition        Report By
 HV7495  HISTORY     - 1969     MONUMENTED       WSSC
 HV7495
 HV7495                          STATION DESCRIPTION
 HV7495
 HV7495'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7495'THE STATION IS AT THE CENTERLINE OF ROUTE 202 (LANDOVER ROAD) ON
 HV7495'THE WEST SIDE OF ROUTE 495 (CAPITAL BELTWAY), SOUTH OF GLENARDEN
 HV7495'AND EAST OF BRIGHTSEAT.
 HV7495'
 HV7495'TO REACH THE STATION FROM THE CENTERLINE OF ROUTE 495 (CAPITAL
 HV7495'BELTWAY), GO WEST ON ROUTE 202 FOR 300 FT + OR -.  THE STATION IS IN
 HV7495'THE CENTER OF THE ISLAND ON THE LEFT.
 HV7495'
 HV7495'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7495'AND IS 2 INCHES BELOW THE SURFACE.  REFERENCES ARE PK NAILS IN
 HV7495'A CONCRETE CURB.  IT IS 9.82 FEET SOUTHEAST OF A PK NAIL, 8.24
 HV7495'FEET SOUTHWEST OF A PK NAIL, 11.51 FEET NORTHEAST OF A PK NAIL,
 HV7495'AND 8.40 FEET NORTHWEST OF A PK NAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7493 ***********************************************************************
 HV7493  DESIGNATION -  17342 WSSC 1970
 HV7493  PID         -  HV7493
 HV7493  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7493  COUNTRY     -  US
 HV7493  USGS QUAD   -  LANHAM (2016)
 HV7493
 HV7493                         *CURRENT SURVEY CONTROL
 HV7493  ______________________________________________________________________
 HV7493* NAD 83(1991) POSITION- 38 55 02.48233(N) 076 51 00.08414(W)   ADJUSTED
 HV7493* NAVD 88 ORTHO HEIGHT -    54.6   (meters)      179.    (feet) VERTCON3
 HV7493  ______________________________________________________________________
 HV7493  GEOID HEIGHT    -        -32.448 (meters)                     GEOID18
 HV7493  LAPLACE CORR    -         -5.04  (seconds)                    DEFLEC18
 HV7493  HORZ ORDER      -  SECOND
 HV7493
 HV7493.The horizontal coordinates were established by classical geodetic methods
 HV7493.and adjusted by the National Geodetic Survey in January 1992.
 HV7493
 HV7493.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7493.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7493
 HV7493.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7493.GEOID18 height accuracy estimate available here.
 HV7493
 HV7493.Click photographs - Photos may exist for this station.
 HV7493
 HV7493.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7493
 HV7493. The following values were computed from the NAD 83(1991) position.
 HV7493
 HV7493;                    North         East     Units Scale Factor Converg.
 HV7493;SPC MD       -   138,842.666   413,006.381   MT  0.99995011   +0 05 38.9
 HV7493;SPC MD       -   455,519.65  1,355,005.10   sFT  0.99995011   +0 05 38.9
 HV7493;UTM  18      - 4,309,232.549   339,611.104   MT  0.99991677   -1 09 44.7
 HV7493
 HV7493!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7493!SPC MD       -   0.99999653  x   0.99995011  =   0.99994664
 HV7493!UTM  18      -   0.99999653  x   0.99991677  =   0.99991330
 HV7493
 HV7493_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3961109232(NAD 83)
 HV7493
 HV7493                          SUPERSEDED SURVEY CONTROL
 HV7493
 HV7493  NAD 83(1986)-  38 55 02.48060(N)    076 51 00.09595(W) AD(       ) 2
 HV7493  NAD 27      -  38 55 02.07973(N)    076 51 01.19768(W) AD(       ) 2
 HV7493  NGVD 29 (07/19/86)   54.8    (m)          180.     (f) VERT ANG       
 HV7493
 HV7493.Superseded values are not recommended for survey control.
 HV7493
 HV7493.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7493.See file dsdata.pdf to determine how the superseded data were derived.
 HV7493
 HV7493_MARKER: I = METAL ROD
 HV7493_SETTING: 0 = UNSPECIFIED SETTING
 HV7493_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7493
 HV7493  HISTORY     - Date     Condition        Report By
 HV7493  HISTORY     - 1969     MONUMENTED       WSSC
 HV7493
 HV7493                          STATION DESCRIPTION
 HV7493
 HV7493'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7493'THE STATION IS AT THE CENTERLINE OF ROUTE 202 (LANDOVER ROAD) ON
 HV7493'THE EAST SIDE OF ROUTE 495 (CAPITAL BELTWAY), SOUTH OF GLENARDEN
 HV7493'AND EAST OF BRIGHTSEAT.
 HV7493'
 HV7493'TO REACH THE STATION FROM THE CENTERLINE OF ROUTE 495, GO EAST
 HV7493'ON ROUTE 202 FOR 400 FEET AND THE STATION IS ON THE LEFT IN THE
 HV7493'CENTER OF THE ISLAND.
 HV7493'
 HV7493'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7493'IN THE CENTERLINE AND IS 4 INCHES BELOW THE SURFACE.  REFERENCES
 HV7493'ARE PK NAILS IN TOP OF CONCRETE CURBS.  IT IS 9.36 FEET NORTHEAST
 HV7493'OF A PK NAIL, 20.66 FEET NORTHWEST OF A PK NAIL, 16.43 FEET
 HV7493'SOUTHWEST OF A PK NAIL AND 8.06 FEET SOUTHEAST OF A PK NAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4987 ***********************************************************************
 HV4987  DESIGNATION -  17343 WSSC 1970
 HV4987  PID         -  HV4987
 HV4987  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4987  COUNTRY     -  US
 HV4987  USGS QUAD   -  MOUNT VERNON (2019)
 HV4987
 HV4987                         *CURRENT SURVEY CONTROL
 HV4987  ______________________________________________________________________
 HV4987* NAD 83(1993) POSITION- 38 39 59.01525(N) 077 01 57.24216(W)   ADJUSTED
 HV4987* NAVD 88 ORTHO HEIGHT -    56.8   (meters)      186.    (feet) VERTCON3
 HV4987  ______________________________________________________________________
 HV4987  GEOID HEIGHT    -        -32.521 (meters)                     GEOID18
 HV4987  LAPLACE CORR    -         -2.73  (seconds)                    DEFLEC18
 HV4987  HORZ ORDER      -  SECOND
 HV4987
 HV4987.The horizontal coordinates were established by classical geodetic methods
 HV4987.and adjusted by the National Geodetic Survey in November 1994.
 HV4987
 HV4987.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4987.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4987
 HV4987.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4987.GEOID18 height accuracy estimate available here.
 HV4987
 HV4987.Click photographs - Photos may exist for this station.
 HV4987
 HV4987.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4987
 HV4987. The following values were computed from the NAD 83(1993) position.
 HV4987
 HV4987;                    North         East     Units Scale Factor Converg.
 HV4987;SPC MD       -   110,974.042   397,165.738   MT  0.99995649   -0 01 13.6
 HV4987;SPC MD       -   364,087.34  1,303,034.59   sFT  0.99995649   -0 01 13.6
 HV4987;UTM  18      - 4,281,717.099   323,164.723   MT  0.99998509   -1 16 12.9
 HV4987
 HV4987!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4987!SPC MD       -   0.99999620  x   0.99995649  =   0.99995269
 HV4987!UTM  18      -   0.99999620  x   0.99998509  =   0.99998129
 HV4987
 HV4987:                Primary Azimuth Mark                     Grid Az
 HV4987:SPC MD       -  ACCOKEEK                                 045 31 46.9
 HV4987:UTM  18      -  ACCOKEEK                                 046 46 46.2
 HV4987
 HV4987_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2316481717(NAD 83)
 HV4987
 HV4987|---------------------------------------------------------------------|
 HV4987| PID    Reference Object                     Distance      Geod. Az  |
 HV4987|                                                           dddmmss.s |
 HV4987| HV4978 ACCOKEEK                            APPROX. 0.7 KM 0453033.3 |
 HV4987| HV4989 17344 WSSC 1970                     APPROX. 0.6 KM 1841730.7 |
 HV4987|---------------------------------------------------------------------|
 HV4987
 HV4987                          SUPERSEDED SURVEY CONTROL
 HV4987
 HV4987  NAD 83(1991)-  38 39 59.01368(N)    077 01 57.24360(W) AD(       ) 2
 HV4987  NAD 83(1986)-  38 39 59.01441(N)    077 01 57.25732(W) AD(       ) 2
 HV4987  NAD 27      -  38 39 58.59822(N)    077 01 58.34320(W) AD(       ) 2
 HV4987  NGVD 29 (07/19/86)   57.0    (m)          187.     (f) VERT ANG       
 HV4987
 HV4987.Superseded values are not recommended for survey control.
 HV4987
 HV4987.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4987.See file dsdata.pdf to determine how the superseded data were derived.
 HV4987
 HV4987_MARKER: I = METAL ROD
 HV4987_SETTING: 0 = UNSPECIFIED SETTING
 HV4987_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4987
 HV4987  HISTORY     - Date     Condition        Report By
 HV4987  HISTORY     - 1969     MONUMENTED       WSSC
 HV4987
 HV4987                          STATION DESCRIPTION
 HV4987
 HV4987'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4987'THE STATION IS SOUTHWEST OF ACCOKEEK ON THE WEST SIDE OF
 HV4987'LIVINGSTON ROAD, 1.15 MILES EAST OF THE INTERSECTION OF
 HV4987'LIVINGSTON ROAD AND ROUTE 210 (INDIAN HEAD HIGHWAY).
 HV4987'
 HV4987'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 210, GO
 HV4987'SOUTHWEST ON LIVINGSTON ROAD FOR 1.15 MILES TO THE STATION ON
 HV4987'THE RIGHT.  ABOUT 100 FT + OR - NORTHEAST OF ACCOKEEK ROAD.
 HV4987'
 HV4987'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4987'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 27 FEET NORTHWEST OF
 HV4987'THE NORTHWEST EDGE OF LIVINGSTON ROAD, 58.14 FEET EAST OF C AND
 HV4987'P POLE NO. 8608, 44.90 FEET SOUTHEAST OF THE FACE OF A 10-INCH
 HV4987'HOLLY, 71.18 FEET WEST OF A CUT NAIL IN THE LEFT SIDE OF C AND P
 HV4987'POLE NO. 8607, 87.65 FEET WEST OF A POLE, AND 98.64 FEET
 HV4987'NORTHEAST OF A YELLOW LINE MARKER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4989 ***********************************************************************
 HV4989  DESIGNATION -  17344 WSSC 1970
 HV4989  PID         -  HV4989
 HV4989  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4989  COUNTRY     -  US
 HV4989  USGS QUAD   -  MOUNT VERNON (2019)
 HV4989
 HV4989                         *CURRENT SURVEY CONTROL
 HV4989  ______________________________________________________________________
 HV4989* NAD 83(1993) POSITION- 38 39 41.00450(N) 077 01 58.96609(W)   ADJUSTED
 HV4989* NAVD 88 ORTHO HEIGHT -    53.9   (meters)      177.    (feet) VERTCON3
 HV4989  ______________________________________________________________________
 HV4989  GEOID HEIGHT    -        -32.531 (meters)                     GEOID18
 HV4989  LAPLACE CORR    -         -2.82  (seconds)                    DEFLEC18
 HV4989  HORZ ORDER      -  SECOND
 HV4989
 HV4989.The horizontal coordinates were established by classical geodetic methods
 HV4989.and adjusted by the National Geodetic Survey in November 1994.
 HV4989
 HV4989.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4989.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4989
 HV4989.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4989.GEOID18 height accuracy estimate available here.
 HV4989
 HV4989.Click photographs - Photos may exist for this station.
 HV4989
 HV4989.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4989
 HV4989. The following values were computed from the NAD 83(1993) position.
 HV4989
 HV4989;                    North         East     Units Scale Factor Converg.
 HV4989;SPC MD       -   110,418.704   397,123.862   MT  0.99995681   -0 01 14.7
 HV4989;SPC MD       -   362,265.36  1,302,897.20   sFT  0.99995681   -0 01 14.7
 HV4989;UTM  18      - 4,281,162.791   323,110.743   MT  0.99998533   -1 16 13.5
 HV4989
 HV4989!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4989!SPC MD       -   0.99999665  x   0.99995681  =   0.99995346
 HV4989!UTM  18      -   0.99999665  x   0.99998533  =   0.99998198
 HV4989
 HV4989_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2311081162(NAD 83)
 HV4989
 HV4989                          SUPERSEDED SURVEY CONTROL
 HV4989
 HV4989  NAD 83(1991)-  38 39 41.00292(N)    077 01 58.96754(W) AD(       ) 2
 HV4989  NAD 83(1986)-  38 39 41.00366(N)    077 01 58.98135(W) AD(       ) 2
 HV4989  NAD 27      -  38 39 40.58719(N)    077 02 00.06730(W) AD(       ) 2
 HV4989  NGVD 29 (07/19/86)   54.1    (m)          177.     (f) VERT ANG       
 HV4989
 HV4989.Superseded values are not recommended for survey control.
 HV4989
 HV4989.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4989.See file dsdata.pdf to determine how the superseded data were derived.
 HV4989
 HV4989_MARKER: I = METAL ROD
 HV4989_SETTING: 0 = UNSPECIFIED SETTING
 HV4989_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4989
 HV4989  HISTORY     - Date     Condition        Report By
 HV4989  HISTORY     - 1969     MONUMENTED       WSSC
 HV4989
 HV4989                          STATION DESCRIPTION
 HV4989
 HV4989'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4989'THE STATION IS SOUTHWEST OF ACCOKEEK ON THE EAST SIDE OF
 HV4989'LIVINGSTON ROAD, 1.45 MILES WEST OF THE INTERSECTION OF
 HV4989'LIVINGSTON ROAD AND ROUTE 210 (INDIAN HEAD HIGHWAY).
 HV4989'
 HV4989'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 210, GO
 HV4989'SOUTHWEST ON LIVINGSTON ROAD FOR 1.45 MILES TO THE INTERSECTION
 HV4989'OF TERESA DRIVE ON THE LEFT.  GO SOUTH FOR 200 FT + OR - TO THE
 HV4989'STATION ON THE LEFT.
 HV4989'
 HV4989'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4989'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 57.03 FEET SOUTHWEST
 HV4989'OF THE SOUTHWEST CORNER OF HOUSE NO. 825, 80.41 FEET SOUTH OF
 HV4989'THE SOUTHEAST CORNER OF THE SAME HOUSE, 18.83 FEET SOUTHWEST OF
 HV4989'A METAL FENCE POST AT THE CORNER OF THE FENCE, 49.51 FEET
 HV4989'SOUTHEAST OF A POLE ON THE WEST SIDE OF LIVINGSTON ROAD, AND
 HV4989'58.96 FEET NORTHEAST OF A TREE ON THE WEST SIDE OF LIVINGSTON
 HV4989'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7357 ***********************************************************************
 HV7357  DESIGNATION -  17345 WSSC 1970
 HV7357  PID         -  HV7357
 HV7357  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7357  COUNTRY     -  US
 HV7357  USGS QUAD   -  BENEDICT (2016)
 HV7357
 HV7357                         *CURRENT SURVEY CONTROL
 HV7357  ______________________________________________________________________
 HV7357* NAD 83(1993) POSITION- 38 34 20.54172(N) 076 43 25.27520(W)   ADJUSTED
 HV7357* NAVD 88 ORTHO HEIGHT -    53.4   (meters)      175.    (feet) VERTCON3
 HV7357  ______________________________________________________________________
 HV7357  GEOID HEIGHT    -        -33.494 (meters)                     GEOID18
 HV7357  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 HV7357  HORZ ORDER      -  SECOND
 HV7357
 HV7357.The horizontal coordinates were established by classical geodetic methods
 HV7357.and adjusted by the National Geodetic Survey in November 1994.
 HV7357
 HV7357.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7357.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7357
 HV7357.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7357.GEOID18 height accuracy estimate available here.
 HV7357
 HV7357.Click photographs - Photos may exist for this station.
 HV7357
 HV7357.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7357
 HV7357. The following values were computed from the NAD 83(1993) position.
 HV7357
 HV7357;                    North         East     Units Scale Factor Converg.
 HV7357;SPC MD       -   100,573.354   424,078.453   MT  0.99996379   +0 10 24.3
 HV7357;SPC MD       -   329,964.41  1,391,330.72   sFT  0.99996379   +0 10 24.3
 HV7357;UTM  18      - 4,270,732.580   349,843.533   MT  0.99987766   -1 04 29.7
 HV7357
 HV7357!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7357!SPC MD       -   0.99999687  x   0.99996379  =   0.99996066
 HV7357!UTM  18      -   0.99999687  x   0.99987766  =   0.99987453
 HV7357
 HV7357:                Primary Azimuth Mark                     Grid Az
 HV7357:SPC MD       -  17346 WSSC 1970                          200 16 10.1
 HV7357:UTM  18      -  17346 WSSC 1970                          201 31 04.1
 HV7357
 HV7357_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4984370732(NAD 83)
 HV7357
 HV7357|---------------------------------------------------------------------|
 HV7357| PID    Reference Object                     Distance      Geod. Az  |
 HV7357|                                                           dddmmss.s |
 HV7357| HV7358 17531 WSSC 1970                     170.364 METERS 19423     |
 HV7357| HV7359 17346 WSSC 1970                     APPROX. 0.6 KM 2002634.4 |
 HV7357|---------------------------------------------------------------------|
 HV7357
 HV7357                          SUPERSEDED SURVEY CONTROL
 HV7357
 HV7357  NAD 83(1991)-  38 34 20.54174(N)    076 43 25.27640(W) AD(       ) 2
 HV7357  NAD 83(1986)-  38 34 20.54055(N)    076 43 25.29098(W) AD(       ) 2
 HV7357  NAD 27      -  38 34 20.10896(N)    076 43 26.41827(W) AD(       ) 2
 HV7357  NGVD 29 (07/19/86)   53.7    (m)          176.     (f) VERT ANG       
 HV7357
 HV7357.Superseded values are not recommended for survey control.
 HV7357
 HV7357.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7357.See file dsdata.pdf to determine how the superseded data were derived.
 HV7357
 HV7357_MARKER: I = METAL ROD
 HV7357_SETTING: 0 = UNSPECIFIED SETTING
 HV7357_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7357
 HV7357  HISTORY     - Date     Condition        Report By
 HV7357  HISTORY     - 1969     MONUMENTED       WSSC
 HV7357
 HV7357                          STATION DESCRIPTION
 HV7357
 HV7357'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7357'THE STATION IS .9 MILES SOUTH OF AQUASCO AND 1.35 MILES NORTHEAST
 HV7357'OF THE PRINCE GEORGES AND CHARLES COUNTY LINES, ON THE WEST SIDE
 HV7357'OF ROUTE 381.
 HV7357'
 HV7357'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 233, GO SOUTH
 HV7357'ON ROUTE 381 FOR .9 MILES TO THE STATION ON THE RIGHT.  THE
 HV7357'STATION IS AT THE NORTHWEST CORNER OF ROUTE 381 AND JOHN WESLEY
 HV7357'CHURCH ROAD.
 HV7357'
 HV7357'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7357'AND IS 1 FOOT BELOW THE SURFACE.  IT IS 82.46 FEET SOUTHEAST OF A
 HV7357'TREE, 11.55 FEET EAST OF A STREET SIGN, 2.85 FEET EAST OF A
 HV7357'WITNESS POST, 74.38 FEET NORTHEAST OF A POLE, AND 10.7 FEET WEST
 HV7357'OF THE WEST EDGE OF ROUTE 381.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7359 ***********************************************************************
 HV7359  DESIGNATION -  17346 WSSC 1970
 HV7359  PID         -  HV7359
 HV7359  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7359  COUNTRY     -  US
 HV7359  USGS QUAD   -  BENEDICT (2016)
 HV7359
 HV7359                         *CURRENT SURVEY CONTROL
 HV7359  ______________________________________________________________________
 HV7359* NAD 83(1993) POSITION- 38 34 03.74151(N) 076 43 33.25162(W)   ADJUSTED
 HV7359* NAVD 88 ORTHO HEIGHT -    47.1   (meters)      155.    (feet) VERTCON3
 HV7359  ______________________________________________________________________
 HV7359  GEOID HEIGHT    -        -33.499 (meters)                     GEOID18
 HV7359  LAPLACE CORR    -         -3.31  (seconds)                    DEFLEC18
 HV7359  HORZ ORDER      -  SECOND
 HV7359
 HV7359.The horizontal coordinates were established by classical geodetic methods
 HV7359.and adjusted by the National Geodetic Survey in November 1994.
 HV7359
 HV7359.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7359.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7359
 HV7359.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7359.GEOID18 height accuracy estimate available here.
 HV7359
 HV7359.Click photographs - Photos may exist for this station.
 HV7359
 HV7359.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7359
 HV7359. The following values were computed from the NAD 83(1993) position.
 HV7359
 HV7359;                    North         East     Units Scale Factor Converg.
 HV7359;SPC MD       -   100,054.753   423,886.930   MT  0.99996422   +0 10 19.3
 HV7359;SPC MD       -   328,262.97  1,390,702.37   sFT  0.99996422   +0 10 19.3
 HV7359;UTM  18      - 4,270,218.318   349,640.775   MT  0.99987841   -1 04 34.3
 HV7359
 HV7359!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7359!SPC MD       -   0.99999786  x   0.99996422  =   0.99996208
 HV7359!UTM  18      -   0.99999786  x   0.99987841  =   0.99987627
 HV7359
 HV7359_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4964070218(NAD 83)
 HV7359
 HV7359                          SUPERSEDED SURVEY CONTROL
 HV7359
 HV7359  NAD 83(1991)-  38 34 03.74153(N)    076 43 33.25284(W) AD(       ) 2
 HV7359  NAD 83(1986)-  38 34 03.74033(N)    076 43 33.26738(W) AD(       ) 2
 HV7359  NAD 27      -  38 34 03.30859(N)    076 43 34.39483(W) AD(       ) 2
 HV7359  NGVD 29 (07/19/86)   47.4    (m)          156.     (f) VERT ANG       
 HV7359
 HV7359.Superseded values are not recommended for survey control.
 HV7359
 HV7359.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7359.See file dsdata.pdf to determine how the superseded data were derived.
 HV7359
 HV7359_MARKER: B = BOLT
 HV7359_SETTING: 0 = UNSPECIFIED SETTING
 HV7359_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7359
 HV7359  HISTORY     - Date     Condition        Report By
 HV7359  HISTORY     - 1969     MONUMENTED       WSSC
 HV7359
 HV7359                          STATION DESCRIPTION
 HV7359
 HV7359'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7359'THE STATION IS 1.3 MILES SOUTH OF AQUASCO AND .95 MILES NORTHEAST
 HV7359'OF THE PRINCE GEORGES AND CHARLES COUNTY LINES ON THE EAST SIDE OF
 HV7359'ROUTE 381 AT THE INTERSECTION OF JOHN WESLEY CHURCH ROAD.
 HV7359'
 HV7359'TO REACH THE STATION FROM ROUTE 233, GO SOUTH ON ROUTE 381 FOR
 HV7359'1.30 MILES TO THE STATION ON THE LEFT.
 HV7359'
 HV7359'THE STATION MARK IS A BRASS BOLT AT THE SOUTH END OF A CONCRETE
 HV7359'SPILLWAY, 12.3 FEET EAST OF THE EAST SIDE OF ROUTE 381, AND 37.1
 HV7359'FEET SOUTHWEST OF A POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5980 ***********************************************************************
 JV5980  DESIGNATION -  17347 WSSC 1970
 JV5980  PID         -  JV5980
 JV5980  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5980  COUNTRY     -  US
 JV5980  USGS QUAD   -  BELTSVILLE (2016)
 JV5980
 JV5980                         *CURRENT SURVEY CONTROL
 JV5980  ______________________________________________________________________
 JV5980* NAD 83(1991) POSITION- 39 00 42.52656(N) 076 55 18.29839(W)   ADJUSTED
 JV5980* NAVD 88 ORTHO HEIGHT -    39.1   (meters)      128.    (feet) VERTCON3
 JV5980  ______________________________________________________________________
 JV5980  GEOID HEIGHT    -        -32.144 (meters)                     GEOID18
 JV5980  LAPLACE CORR    -         -4.41  (seconds)                    DEFLEC18
 JV5980  HORZ ORDER      -  SECOND
 JV5980
 JV5980.The horizontal coordinates were established by classical geodetic methods
 JV5980.and adjusted by the National Geodetic Survey in January 1992.
 JV5980
 JV5980.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5980.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5980
 JV5980.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5980.GEOID18 height accuracy estimate available here.
 JV5980
 JV5980.Click photographs - Photos may exist for this station.
 JV5980
 JV5980.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5980
 JV5980. The following values were computed from the NAD 83(1991) position.
 JV5980
 JV5980;                    North         East     Units Scale Factor Converg.
 JV5980;SPC MD       -   149,320.470   406,777.106   MT  0.99995266   +0 02 56.8
 JV5980;SPC MD       -   489,895.58  1,334,567.89   sFT  0.99995266   +0 02 56.8
 JV5980;UTM  18      - 4,319,844.331   333,613.465   MT  0.99994090   -1 12 35.9
 JV5980
 JV5980!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5980!SPC MD       -   0.99999891  x   0.99995266  =   0.99995157
 JV5980!UTM  18      -   0.99999891  x   0.99994090  =   0.99993981
 JV5980
 JV5980:                Primary Azimuth Mark                     Grid Az
 JV5980:SPC MD       -  BOXWOOD                                  091 28 32.8
 JV5980:UTM  18      -  BOXWOOD                                  092 44 05.5
 JV5980
 JV5980_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3361319844(NAD 83)
 JV5980
 JV5980|---------------------------------------------------------------------|
 JV5980| PID    Reference Object                     Distance      Geod. Az  |
 JV5980|                                                           dddmmss.s |
 JV5980| JV5935 BOXWOOD                             APPROX. 3.2 KM 0913129.6 |
 JV5980| JV5981 17348 WSSC 1970                     280.725 METERS 19942     |
 JV5980|---------------------------------------------------------------------|
 JV5980
 JV5980                          SUPERSEDED SURVEY CONTROL
 JV5980
 JV5980  NAD 83(1986)-  39 00 42.52542(N)    076 55 18.30919(W) AD(       ) 2
 JV5980  NAD 27      -  39 00 42.13034(N)    076 55 19.40260(W) AD(       ) 2
 JV5980  NGVD 29 (07/19/86)   39.3    (m)          129.     (f) VERT ANG       
 JV5980
 JV5980.Superseded values are not recommended for survey control.
 JV5980
 JV5980.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5980.See file dsdata.pdf to determine how the superseded data were derived.
 JV5980
 JV5980_MARKER: I = METAL ROD
 JV5980_SETTING: 0 = UNSPECIFIED SETTING
 JV5980_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5980
 JV5980  HISTORY     - Date     Condition        Report By
 JV5980  HISTORY     - 1969     MONUMENTED       WSSC
 JV5980
 JV5980                          STATION DESCRIPTION
 JV5980
 JV5980'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5980'THE STATION IS IN THE TOWN OF HOLLYWOOD AT THE SOUTH CORNER OF
 JV5980'THE INTERSECTION OF RHODE ISLAND AVENUE AND LACKAWANNA STREET,
 JV5980'.5 MILES SOUTHEAST OF THE INTERSECTION OF ROUTE 1 (BALTIMORE
 JV5980'AVENUE) AND ROUTE 495 (CAPITAL BELTWAY).
 JV5980'
 JV5980'TO REACH THE STATION FROM THE INTERSECTION OF RHODE ISLAND
 JV5980'AVENUE AND ROUTE 495, GO SOUTH ON RHODE ISLAND AVENUE FOR .45
 JV5980'MILES TO THE STATION ON THE LEFT.
 JV5980'
 JV5980'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5980'CENTER.  IT IS 69.73 FEET SOUTH OF THE CORNER OF A METAL FENCE
 JV5980'POST, 51.21 FEET SOUTHEAST OF A POLE, 28.35 FEET SOUTHWEST OF
 JV5980'THE SOUTHWEST CORNER OF HOUSE NO. 9611 AND 49.06 FEET SOUTHWEST
 JV5980'OF THE NORTHWEST CORNER OF THE PORCH OF THE SAME HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5981 ***********************************************************************
 JV5981  DESIGNATION -  17348 WSSC 1970
 JV5981  PID         -  JV5981
 JV5981  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5981  COUNTRY     -  US
 JV5981  USGS QUAD   -  BELTSVILLE (2016)
 JV5981
 JV5981                         *CURRENT SURVEY CONTROL
 JV5981  ______________________________________________________________________
 JV5981* NAD 83(1991) POSITION- 39 00 33.95587(N) 076 55 22.23100(W)   ADJUSTED
 JV5981* NAVD 88 ORTHO HEIGHT -    36.9   (meters)      121.    (feet) VERTCON3
 JV5981  ______________________________________________________________________
 JV5981  GEOID HEIGHT    -        -32.143 (meters)                     GEOID18
 JV5981  LAPLACE CORR    -         -4.41  (seconds)                    DEFLEC18
 JV5981  HORZ ORDER      -  SECOND
 JV5981
 JV5981.The horizontal coordinates were established by classical geodetic methods
 JV5981.and adjusted by the National Geodetic Survey in January 1992.
 JV5981
 JV5981.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5981.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5981
 JV5981.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5981.GEOID18 height accuracy estimate available here.
 JV5981
 JV5981.Click photographs - Photos may exist for this station.
 JV5981
 JV5981.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5981
 JV5981. The following values were computed from the NAD 83(1991) position.
 JV5981
 JV5981;                    North         East     Units Scale Factor Converg.
 JV5981;SPC MD       -   149,056.102   406,682.720   MT  0.99995256   +0 02 54.3
 JV5981;SPC MD       -   489,028.23  1,334,258.22   sFT  0.99995256   +0 02 54.3
 JV5981;UTM  18      - 4,319,582.103   333,513.293   MT  0.99994131   -1 12 38.2
 JV5981
 JV5981!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5981!SPC MD       -   0.99999926  x   0.99995256  =   0.99995182
 JV5981!UTM  18      -   0.99999926  x   0.99994131  =   0.99994057
 JV5981
 JV5981_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3351319582(NAD 83)
 JV5981
 JV5981                          SUPERSEDED SURVEY CONTROL
 JV5981
 JV5981  NAD 83(1986)-  39 00 33.95475(N)    076 55 22.24183(W) AD(       ) 2
 JV5981  NAD 27      -  39 00 33.55953(N)    076 55 23.33511(W) AD(       ) 2
 JV5981  NGVD 29 (07/19/86)   37.1    (m)          122.     (f) VERT ANG       
 JV5981
 JV5981.Superseded values are not recommended for survey control.
 JV5981
 JV5981.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5981.See file dsdata.pdf to determine how the superseded data were derived.
 JV5981
 JV5981_MARKER: I = METAL ROD
 JV5981_SETTING: 0 = UNSPECIFIED SETTING
 JV5981_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5981
 JV5981  HISTORY     - Date     Condition        Report By
 JV5981  HISTORY     - 1969     MONUMENTED       WSSC
 JV5981
 JV5981                          STATION DESCRIPTION
 JV5981
 JV5981'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5981'THE STATION IS IN THE TOWN OF HOLLYWOOD ON THE WEST SIDE OF
 JV5981'RHODE ISLAND AVENUE, .65 MILES SOUTH OF THE INTERSECTION OF
 JV5981'RHODE ISLAND AVENUE AND ROUTE 495 (CAPITAL BELTWAY).
 JV5981'
 JV5981'TO REACH THE STATION FROM THE INTERSECTION OF RHODE ISLAND
 JV5981'AVENUE AND ROUTE 495, GO SOUTHWEST ON RHODE ISLAND AVENUE FOR
 JV5981'.65 MILES TO THE STATION ON THE RIGHT.
 JV5981'
 JV5981'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5981'CENTER.  IT IS EAST OF HOUSE NO. 9526, 24.17 FEET EAST OF THE
 JV5981'SOUTHWEST CORNER OF THE PORCH, 23.56 FEET EAST OF THE NORTHEAST
 JV5981'CORNER OF THE PORCH, 38.38 FEET SOUTHWEST OF PEPCO POLE NO. 85266,
 JV5981'AND 36.20 FEET NORTH OF PEPCO POLE NO. 835617.  THE MONUMENT IS 4
 JV5981'INCHES BELOW THE SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5973 ***********************************************************************
 JV5973  DESIGNATION -  17349 WSSC 1970
 JV5973  PID         -  JV5973
 JV5973  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5973  COUNTRY     -  US
 JV5973  USGS QUAD   -  BELTSVILLE (2016)
 JV5973
 JV5973                         *CURRENT SURVEY CONTROL
 JV5973  ______________________________________________________________________
 JV5973* NAD 83(1991) POSITION- 39 00 03.29757(N) 076 53 48.41052(W)   ADJUSTED
 JV5973* NAVD 88 ORTHO HEIGHT -    46.5   (meters)      153.    (feet) VERTCON3
 JV5973  ______________________________________________________________________
 JV5973  GEOID HEIGHT    -        -32.214 (meters)                     GEOID18
 JV5973  LAPLACE CORR    -         -4.86  (seconds)                    DEFLEC18
 JV5973  HORZ ORDER      -  SECOND
 JV5973
 JV5973.The horizontal coordinates were established by classical geodetic methods
 JV5973.and adjusted by the National Geodetic Survey in January 1992.
 JV5973
 JV5973.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5973.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5973
 JV5973.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5973.GEOID18 height accuracy estimate available here.
 JV5973
 JV5973.Click photographs - Photos may exist for this station.
 JV5973
 JV5973.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5973
 JV5973. The following values were computed from the NAD 83(1991) position.
 JV5973
 JV5973;                    North         East     Units Scale Factor Converg.
 JV5973;SPC MD       -   148,112.947   408,940.972   MT  0.99995222   +0 03 53.2
 JV5973;SPC MD       -   485,933.89  1,341,667.17   sFT  0.99995222   +0 03 53.2
 JV5973;UTM  18      - 4,318,589.578   335,750.245   MT  0.99993220   -1 11 38.3
 JV5973
 JV5973!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5973!SPC MD       -   0.99999776  x   0.99995222  =   0.99994998
 JV5973!UTM  18      -   0.99999776  x   0.99993220  =   0.99992996
 JV5973
 JV5973:                Primary Azimuth Mark                     Grid Az
 JV5973:SPC MD       -  BOXWOOD                                  043 24 06.2
 JV5973:UTM  18      -  BOXWOOD                                  044 39 37.7
 JV5973
 JV5973_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3575018589(NAD 83)
 JV5973
 JV5973|---------------------------------------------------------------------|
 JV5973| PID    Reference Object                     Distance      Geod. Az  |
 JV5973|                                                           dddmmss.s |
 JV5973| JV5935 BOXWOOD                             APPROX. 1.5 KM 0432759.4 |
 JV5973|---------------------------------------------------------------------|
 JV5973
 JV5973                          SUPERSEDED SURVEY CONTROL
 JV5973
 JV5973  NAD 83(1986)-  39 00 03.29629(N)    076 53 48.42146(W) AD(       ) 2
 JV5973  NAD 27      -  39 00 02.90048(N)    076 53 49.51776(W) AD(       ) 2
 JV5973  NGVD 29 (07/19/86)   46.7    (m)          153.     (f) VERT ANG       
 JV5973
 JV5973.Superseded values are not recommended for survey control.
 JV5973
 JV5973.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5973.See file dsdata.pdf to determine how the superseded data were derived.
 JV5973
 JV5973_MARKER: B = BOLT
 JV5973_SETTING: 0 = UNSPECIFIED SETTING
 JV5973_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5973
 JV5973  HISTORY     - Date     Condition        Report By
 JV5973  HISTORY     - 1969     MONUMENTED       WSSC
 JV5973
 JV5973                          STATION DESCRIPTION
 JV5973
 JV5973'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5973'THE STATION IS AT GREENBELT IN THE MEDIAN STRIP OF KENILWORTH
 JV5973'AVENUE, 900 FEET SOUTHWEST OF THE CENTERLINE OF THE INTERSECTION
 JV5973'OF KENILWORTH AVENUE AND ROUTE 495 (CAPITAL BELTWAY).
 JV5973'
 JV5973'THE STATION MARK IS A BRASS BOLT IN THE NORTHWEST CORNER OF A
 JV5973'CONCRETE CATCH BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5970 ***********************************************************************
 JV5970  DESIGNATION -  17350 WSSC 1970
 JV5970  PID         -  JV5970
 JV5970  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5970  COUNTRY     -  US
 JV5970  USGS QUAD   -  BELTSVILLE (2016)
 JV5970
 JV5970                         *CURRENT SURVEY CONTROL
 JV5970  ______________________________________________________________________
 JV5970* NAD 83(1991) POSITION- 39 00 23.45239(N) 076 53 33.30715(W)   ADJUSTED
 JV5970* NAVD 88 ORTHO HEIGHT -    31.7   (meters)      104.    (feet) VERTCON3
 JV5970  ______________________________________________________________________
 JV5970  GEOID HEIGHT    -        -32.219 (meters)                     GEOID18
 JV5970  LAPLACE CORR    -         -4.88  (seconds)                    DEFLEC18
 JV5970  HORZ ORDER      -  SECOND
 JV5970
 JV5970.The horizontal coordinates were established by classical geodetic methods
 JV5970.and adjusted by the National Geodetic Survey in January 1992.
 JV5970
 JV5970.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5970.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5970
 JV5970.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5970.GEOID18 height accuracy estimate available here.
 JV5970
 JV5970.Click photographs - Photos may exist for this station.
 JV5970
 JV5970.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5970
 JV5970. The following values were computed from the NAD 83(1991) position.
 JV5970
 JV5970;                    North         East     Units Scale Factor Converg.
 JV5970;SPC MD       -   148,734.864   409,303.650   MT  0.99995244   +0 04 02.7
 JV5970;SPC MD       -   487,974.30  1,342,857.06   sFT  0.99995244   +0 04 02.7
 JV5970;UTM  18      - 4,319,203.364   336,126.489   MT  0.99993068   -1 11 29.3
 JV5970
 JV5970!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5970!SPC MD       -   1.00000009  x   0.99995244  =   0.99995253
 JV5970!UTM  18      -   1.00000009  x   0.99993068  =   0.99993077
 JV5970
 JV5970_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3612619203(NAD 83)
 JV5970
 JV5970                          SUPERSEDED SURVEY CONTROL
 JV5970
 JV5970  NAD 83(1986)-  39 00 23.45109(N)    076 53 33.31802(W) AD(       ) 2
 JV5970  NAD 27      -  39 00 23.05550(N)    076 53 34.41462(W) AD(       ) 2
 JV5970  NGVD 29 (07/19/86)   31.9    (m)          105.     (f) VERT ANG       
 JV5970
 JV5970.Superseded values are not recommended for survey control.
 JV5970
 JV5970.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5970.See file dsdata.pdf to determine how the superseded data were derived.
 JV5970
 JV5970_MARKER: B = BOLT
 JV5970_SETTING: 0 = UNSPECIFIED SETTING
 JV5970_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5970
 JV5970  HISTORY     - Date     Condition        Report By
 JV5970  HISTORY     - 1969     MONUMENTED       WSSC
 JV5970
 JV5970                          STATION DESCRIPTION
 JV5970
 JV5970'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5970'THE STATION IS ABOUT 1/2 MILE WEST OF GREENBELT AND 2 MILES
 JV5970'EAST OF COLLEGE PARK.
 JV5970'
 JV5970'THE STATION IS IN THE CENTERLINE OF KENILWORTH AVENUE ON THE
 JV5970'NORTH SIDE OF THE INTERSECTION OF CRESCENT ROAD.
 JV5970'
 JV5970'THE STATION MARK IS A BRASS BOLT SET FLUSH IN THE CENTER OF A
 JV5970'CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7491 ***********************************************************************
 HV7491  DESIGNATION -  17351 WSSC 1970
 HV7491  PID         -  HV7491
 HV7491  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7491  COUNTRY     -  US
 HV7491  USGS QUAD   -  LANHAM (2016)
 HV7491
 HV7491                         *CURRENT SURVEY CONTROL
 HV7491  ______________________________________________________________________
 HV7491* NAD 83(1993) POSITION- 38 53 32.20244(N) 076 50 48.12091(W)   ADJUSTED
 HV7491* NAVD 88 ORTHO HEIGHT -    35.3   (meters)      116.    (feet) VERTCON3
 HV7491  ______________________________________________________________________
 HV7491  GEOID HEIGHT    -        -32.492 (meters)                     GEOID18
 HV7491  LAPLACE CORR    -         -5.28  (seconds)                    DEFLEC18
 HV7491  HORZ ORDER      -  SECOND
 HV7491
 HV7491.The horizontal coordinates were established by classical geodetic methods
 HV7491.and adjusted by the National Geodetic Survey in November 1994.
 HV7491
 HV7491.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7491.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7491
 HV7491.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7491.GEOID18 height accuracy estimate available here.
 HV7491
 HV7491.Click photographs - Photos may exist for this station.
 HV7491
 HV7491.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7491
 HV7491. The following values were computed from the NAD 83(1993) position.
 HV7491
 HV7491;                    North         East     Units Scale Factor Converg.
 HV7491;SPC MD       -   136,059.315   413,299.246   MT  0.99994989   +0 05 46.4
 HV7491;SPC MD       -   446,387.94  1,355,965.94   sFT  0.99994989   +0 05 46.4
 HV7491;UTM  18      - 4,306,443.541   339,842.869   MT  0.99991586   -1 09 35.0
 HV7491
 HV7491!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7491!SPC MD       -   0.99999957  x   0.99994989  =   0.99994946
 HV7491!UTM  18      -   0.99999957  x   0.99991586  =   0.99991543
 HV7491
 HV7491:                Primary Azimuth Mark                     Grid Az
 HV7491:SPC MD       -  BEANE                                    055 39 16.6
 HV7491:UTM  18      -  BEANE                                    056 54 38.0
 HV7491
 HV7491_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3984206443(NAD 83)
 HV7491
 HV7491|---------------------------------------------------------------------|
 HV7491| PID    Reference Object                     Distance      Geod. Az  |
 HV7491|                                                           dddmmss.s |
 HV7491| HV7470 BEANE                               APPROX. 1.6 KM 0554503.0 |
 HV7491| HV7490 17352 WSSC 1970                      78.614 METERS 06917     |
 HV7491|---------------------------------------------------------------------|
 HV7491
 HV7491                          SUPERSEDED SURVEY CONTROL
 HV7491
 HV7491  NAD 83(1991)-  38 53 32.20211(N)    076 50 48.12094(W) AD(       ) 2
 HV7491  NAD 83(1986)-  38 53 32.20036(N)    076 50 48.13302(W) AD(       ) 2
 HV7491  NAD 27      -  38 53 31.79824(N)    076 50 49.23516(W) AD(       ) 2
 HV7491  NGVD 29 (07/19/86)   35.5    (m)          116.     (f) VERT ANG       
 HV7491
 HV7491.Superseded values are not recommended for survey control.
 HV7491
 HV7491.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7491.See file dsdata.pdf to determine how the superseded data were derived.
 HV7491
 HV7491_MARKER: B = BOLT
 HV7491_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV7491+WITH SETTING: PAVEMENT
 HV7491_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7491+STABILITY: SURFACE MOTION
 HV7491
 HV7491  HISTORY     - Date     Condition        Report By
 HV7491  HISTORY     - 1969     MONUMENTED       WSSC
 HV7491
 HV7491                          STATION DESCRIPTION
 HV7491
 HV7491'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7491'THE STATION IS LOCATED IN THE MEDIAN STRIP OF ROUTE 214 (CENTRAL
 HV7491'AVENUE), 125 FEET EAST OF THE CENTERLINE OF THE INTERSECTION
 HV7491'OF ROUTE 214 AND ROUTE 495 (CAPITAL BELTWAY).
 HV7491'
 HV7491'THE STATION MARK IS A BRASS BOLT IN THE CENTER OF A CONCRETE
 HV7491'SLAB.  IT IS 4.19 FEET EAST OF THE FACE OF A CONCRETE BRIDGE
 HV7491'PILLAR, 7.2 FEET SOUTH OF THE BACK EDGE OF THE WESTBOUND LANE
 HV7491'CURB AND 7.4 FEET NORTH OF THE EASTBOUND LANE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7490 ***********************************************************************
 HV7490  DESIGNATION -  17352 WSSC 1970
 HV7490  PID         -  HV7490
 HV7490  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7490  COUNTRY     -  US
 HV7490  USGS QUAD   -  LANHAM (2016)
 HV7490
 HV7490                         *CURRENT SURVEY CONTROL
 HV7490  ______________________________________________________________________
 HV7490* NAD 83(1993) POSITION- 38 53 33.10459(N) 076 50 45.06989(W)   ADJUSTED
 HV7490* NAVD 88 ORTHO HEIGHT -    35.3   (meters)      116.    (feet) VERTCON3
 HV7490  ______________________________________________________________________
 HV7490  GEOID HEIGHT    -        -32.494 (meters)                     GEOID18
 HV7490  LAPLACE CORR    -         -5.28  (seconds)                    DEFLEC18
 HV7490  HORZ ORDER      -  SECOND
 HV7490
 HV7490.The horizontal coordinates were established by classical geodetic methods
 HV7490.and adjusted by the National Geodetic Survey in November 1994.
 HV7490
 HV7490.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7490.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7490
 HV7490.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7490.GEOID18 height accuracy estimate available here.
 HV7490
 HV7490.Click photographs - Photos may exist for this station.
 HV7490
 HV7490.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7490
 HV7490. The following values were computed from the NAD 83(1993) position.
 HV7490
 HV7490;                    North         East     Units Scale Factor Converg.
 HV7490;SPC MD       -   136,087.257   413,372.722   MT  0.99994989   +0 05 48.3
 HV7490;SPC MD       -   446,479.61  1,356,207.01   sFT  0.99994989   +0 05 48.3
 HV7490;UTM  18      - 4,306,469.864   339,916.938   MT  0.99991557   -1 09 33.1
 HV7490
 HV7490!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7490!SPC MD       -   0.99999957  x   0.99994989  =   0.99994946
 HV7490!UTM  18      -   0.99999957  x   0.99991557  =   0.99991514
 HV7490
 HV7490_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3991606469(NAD 83)
 HV7490
 HV7490                          SUPERSEDED SURVEY CONTROL
 HV7490
 HV7490  NAD 83(1991)-  38 53 33.10426(N)    076 50 45.06992(W) AD(       ) 2
 HV7490  NAD 83(1986)-  38 53 33.10250(N)    076 50 45.08200(W) AD(       ) 2
 HV7490  NAD 27      -  38 53 32.70040(N)    076 50 46.18423(W) AD(       ) 2
 HV7490  NGVD 29 (07/19/86)   35.5    (m)          116.     (f) VERT ANG       
 HV7490
 HV7490.Superseded values are not recommended for survey control.
 HV7490
 HV7490.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7490.See file dsdata.pdf to determine how the superseded data were derived.
 HV7490
 HV7490_MARKER: I = METAL ROD
 HV7490_SETTING: 0 = UNSPECIFIED SETTING
 HV7490_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7490
 HV7490  HISTORY     - Date     Condition        Report By
 HV7490  HISTORY     - 1969     MONUMENTED       WSSC
 HV7490
 HV7490                          STATION DESCRIPTION
 HV7490
 HV7490'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7490'THE STATION IS LOCATED IN THE MEDIAN STRIP OF ROUTE 214 (CENTRAL
 HV7490'AVENUE), 375 FEET EAST OF THE CENTERLINE OF THE INTERSECTION OF
 HV7490'ROUTE 214 AND ROUTE 495 (CAPITAL BELTWAY).
 HV7490'
 HV7490'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7490'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 35.90 FEET SOUTH OF
 HV7490'THE SOUTHWEST CORNER OF A CATCH BASIN, ON THE NORTH SIDE OF THE
 HV7490'ROAD, 54.92 FEET SOUTHWEST OF A PK NAIL IN THE CURB ON THE NORTH
 HV7490'SIDE OF THE ROAD, 44.62 FEET NORTHEAST OF A PK NAIL IN THE CURB
 HV7490'ON THE SOUTH SIDE OF THE ROAD, 64.40 FEET NORTHWEST OF A PK NAIL
 HV7490'IN THE CURB ON THE SOUTH SIDE OF THE ROAD, 7.6 FEET SOUTH OF
 HV7490'THE WESTBOUND LANE CURB AND 6.9 FEET NORTH OF THE EASTBOUND
 HV7490'LANE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7531 ***********************************************************************
 HV7531  DESIGNATION -  17353 WSSC 1970
 HV7531  PID         -  HV7531
 HV7531  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7531  COUNTRY     -  US
 HV7531  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7531
 HV7531                         *CURRENT SURVEY CONTROL
 HV7531  ______________________________________________________________________
 HV7531* NAD 83(1993) POSITION- 38 51 02.93170(N) 076 48 00.18965(W)   ADJUSTED
 HV7531* NAVD 88 ORTHO HEIGHT -    30.0   (meters)       98.    (feet) VERTCON3
 HV7531  ______________________________________________________________________
 HV7531  GEOID HEIGHT    -        -32.696 (meters)                     GEOID18
 HV7531  LAPLACE CORR    -         -6.15  (seconds)                    DEFLEC18
 HV7531  HORZ ORDER      -  SECOND
 HV7531
 HV7531.The horizontal coordinates were established by classical geodetic methods
 HV7531.and adjusted by the National Geodetic Survey in November 1994.
 HV7531
 HV7531.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7531.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7531
 HV7531.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7531.GEOID18 height accuracy estimate available here.
 HV7531
 HV7531.Click photographs - Photos may exist for this station.
 HV7531
 HV7531.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7531
 HV7531. The following values were computed from the NAD 83(1993) position.
 HV7531
 HV7531;                    North         East     Units Scale Factor Converg.
 HV7531;SPC MD       -   131,464.332   417,356.148   MT  0.99994994   +0 07 31.8
 HV7531;SPC MD       -   431,312.56  1,369,275.96   sFT  0.99994994   +0 07 31.8
 HV7531;UTM  18      - 4,301,760.972   343,797.960   MT  0.99990045   -1 07 45.8
 HV7531
 HV7531!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7531!SPC MD       -   1.00000042  x   0.99994994  =   0.99995036
 HV7531!UTM  18      -   1.00000042  x   0.99990045  =   0.99990087
 HV7531
 HV7531_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4379701760(NAD 83)
 HV7531
 HV7531                          SUPERSEDED SURVEY CONTROL
 HV7531
 HV7531  NAD 83(1991)-  38 51 02.93144(N)    076 48 00.18967(W) AD(       ) 2
 HV7531  NAD 83(1986)-  38 51 02.92900(N)    076 48 00.20233(W) AD(       ) 2
 HV7531  NAD 27      -  38 51 02.52324(N)    076 48 01.30941(W) AD(       ) 2
 HV7531  NGVD 29 (07/19/86)   30.3    (m)           99.     (f) VERT ANG       
 HV7531
 HV7531.Superseded values are not recommended for survey control.
 HV7531
 HV7531.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7531.See file dsdata.pdf to determine how the superseded data were derived.
 HV7531
 HV7531_MARKER: I = METAL ROD
 HV7531_SETTING: 0 = UNSPECIFIED SETTING
 HV7531_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7531
 HV7531  HISTORY     - Date     Condition        Report By
 HV7531  HISTORY     - 1969     MONUMENTED       WSSC
 HV7531  HISTORY     - 20120124 MARK NOT FOUND   JARICE
 HV7531
 HV7531                          STATION DESCRIPTION
 HV7531
 HV7531'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7531'THE STATION IS LOCATED ABOUT 3.0 MILES NORTHWEST OF UPPER
 HV7531'MARLBORO ON BROWN STATION ROAD.
 HV7531'
 HV7531'TO REACH THE STATION FROM THE INTERSECTION OF BROWN STATION
 HV7531'ROAD AND ROUTE 408 (MARLBORO PIKE), GO NORTHWEST ON BROWN STATION
 HV7531'ROAD FOR 3.10 MILES TO THE STATION ON THE LEFT.  THE STATION IS
 HV7531'1000 FEET SOUTHEAST OF BROWN STATION ROAD.
 HV7531'
 HV7531'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7531'AND IS 4 INCHES BELOW THE SURFACE.  IT IS 51.79 FEET SOUTHEAST OF
 HV7531'AN X CUT IN THE WEST END OF A CONCRETE HEADWALL, 51.33 FEET
 HV7531'SOUTHWEST OF AN X CUT IN THE EAST END OF A CONCRETE HEADWALL,
 HV7531'12.83 FEET NORTHEAST OF AN X CUT IN THE WEST END OF A CONCRETE
 HV7531'HEADWALL, 11.27 FEET NORTHWEST OF AN X CUT IN THE EAST END OF
 HV7531'THE CONCRETE HEADWALL AND 11.4 FEET SOUTHWEST OF THE EDGE OF
 HV7531'BROWN STATION ROAD.
 HV7531
 HV7531                          STATION RECOVERY (2012)
 HV7531
 HV7531'RECOVERY NOTE BY J A RICE INC 2012 (JWB)
 HV7531'COORDINATES FOR THIS POINT NOW FALL ON TOP OF A NEW STORM DRAIN INLET
 HV7531'ADDED WHEN ROAD WAS WIDENED IN THE RECENT PAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7529 ***********************************************************************
 HV7529  DESIGNATION -  17354 WSSC 1970
 HV7529  PID         -  HV7529
 HV7529  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7529  COUNTRY     -  US
 HV7529  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7529
 HV7529                         *CURRENT SURVEY CONTROL
 HV7529  ______________________________________________________________________
 HV7529* NAD 83(1993) POSITION- 38 50 58.63563(N) 076 47 52.59678(W)   ADJUSTED
 HV7529* NAVD 88 ORTHO HEIGHT -    37.6   (meters)      123.    (feet) VERTCON3
 HV7529  ______________________________________________________________________
 HV7529  GEOID HEIGHT    -        -32.705 (meters)                     GEOID18
 HV7529  LAPLACE CORR    -         -6.14  (seconds)                    DEFLEC18
 HV7529  HORZ ORDER      -  SECOND
 HV7529
 HV7529.The horizontal coordinates were established by classical geodetic methods
 HV7529.and adjusted by the National Geodetic Survey in November 1994.
 HV7529
 HV7529.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7529.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7529
 HV7529.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7529.GEOID18 height accuracy estimate available here.
 HV7529
 HV7529.Click photographs - Photos may exist for this station.
 HV7529
 HV7529.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7529
 HV7529. The following values were computed from the NAD 83(1993) position.
 HV7529
 HV7529;                    North         East     Units Scale Factor Converg.
 HV7529;SPC MD       -   131,332.265   417,539.521   MT  0.99994995   +0 07 36.5
 HV7529;SPC MD       -   430,879.27  1,369,877.58   sFT  0.99994995   +0 07 36.5
 HV7529;UTM  18      - 4,301,624.928   343,978.388   MT  0.99989976   -1 07 40.9
 HV7529
 HV7529!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7529!SPC MD       -   0.99999923  x   0.99994995  =   0.99994918
 HV7529!UTM  18      -   0.99999923  x   0.99989976  =   0.99989899
 HV7529
 HV7529_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4397801624(NAD 83)
 HV7529
 HV7529|---------------------------------------------------------------------|
 HV7529| PID    Reference Object                     Distance      Geod. Az  |
 HV7529|                                                           dddmmss.s |
 HV7529| HV7531 17353 WSSC 1970                     225.992 METERS 30553     |
 HV7529| HV7530 17493 WSSC 1970                     392.673 METERS 34338     |
 HV7529|---------------------------------------------------------------------|
 HV7529
 HV7529                          SUPERSEDED SURVEY CONTROL
 HV7529
 HV7529  NAD 83(1991)-  38 50 58.63536(N)    076 47 52.59680(W) AD(       ) 2
 HV7529  NAD 83(1986)-  38 50 58.63290(N)    076 47 52.60948(W) AD(       ) 2
 HV7529  NAD 27      -  38 50 58.22708(N)    076 47 53.71681(W) AD(       ) 2
 HV7529  NGVD 29 (07/19/86)   37.9    (m)          124.     (f) VERT ANG       
 HV7529
 HV7529.Superseded values are not recommended for survey control.
 HV7529
 HV7529.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7529.See file dsdata.pdf to determine how the superseded data were derived.
 HV7529
 HV7529_MARKER: I = METAL ROD
 HV7529_SETTING: 0 = UNSPECIFIED SETTING
 HV7529_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7529
 HV7529  HISTORY     - Date     Condition        Report By
 HV7529  HISTORY     - 1969     MONUMENTED       WSSC
 HV7529
 HV7529                          STATION DESCRIPTION
 HV7529
 HV7529'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7529'THE STATION IS LOCATED ABOUT 2.9 MILES NORTHWEST OF UPPER
 HV7529'MARLBORO ON BROWN STATION ROAD.
 HV7529'
 HV7529'TO REACH THE STATION FROM THE INTERSECTION OF BROWN STATION
 HV7529'ROAD AND ROUTE 408 (MARLBORO PIKE), GO NORTHWEST ON BROWN STATION
 HV7529'ROAD FOR 3.0 MILES TO THE STATION ON THE LEFT.  THE STATION IS
 HV7529'1500 FEET SOUTHEAST OF BROWN ROAD.
 HV7529'
 HV7529'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7529'AND IS 2 INCHES BELOW THE SURFACE.  IT IS ON THE EASTERLY EDGE
 HV7529'OF A POWER LINE RIGHT OF WAY AND ON THE EAST SIDE OF TOWER
 HV7529'NO. 373-E, 68.07 FEET EAST OF THE SOUTHWEST TOWER LEG, 43.17
 HV7529'FEET EAST OF THE SOUTHEAST TOWER LEG, 64.32 FEET EAST OF THE
 HV7529'NORTHEAST TOWER LEG, 79.48 FEET SOUTHWEST OF POLE NO. 4188 AND
 HV7529'52.68 FEET WEST OF A 12-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7526 ***********************************************************************
 HV7526  DESIGNATION -  17355 WSSC 1970
 HV7526  PID         -  HV7526
 HV7526  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7526  COUNTRY     -  US
 HV7526  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7526
 HV7526                         *CURRENT SURVEY CONTROL
 HV7526  ______________________________________________________________________
 HV7526* NAD 83(1993) POSITION- 38 49 48.35899(N) 076 46 15.49723(W)   ADJUSTED
 HV7526* NAVD 88 ORTHO HEIGHT -    17.6   (meters)       58.    (feet) VERTCON3
 HV7526  ______________________________________________________________________
 HV7526  GEOID HEIGHT    -        -32.829 (meters)                     GEOID18
 HV7526  LAPLACE CORR    -         -6.16  (seconds)                    DEFLEC18
 HV7526  HORZ ORDER      -  SECOND
 HV7526
 HV7526.The horizontal coordinates were established by classical geodetic methods
 HV7526.and adjusted by the National Geodetic Survey in November 1994.
 HV7526
 HV7526.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7526.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7526
 HV7526.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7526.GEOID18 height accuracy estimate available here.
 HV7526
 HV7526.Click photographs - Photos may exist for this station.
 HV7526
 HV7526.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7526
 HV7526. The following values were computed from the NAD 83(1993) position.
 HV7526
 HV7526;                    North         East     Units Scale Factor Converg.
 HV7526;SPC MD       -   129,170.802   419,886.268   MT  0.99995016   +0 08 37.5
 HV7526;SPC MD       -   423,787.87  1,377,576.86   sFT  0.99995016   +0 08 37.5
 HV7526;UTM  18      - 4,299,412.721   346,277.120   MT  0.99989099   -1 06 38.3
 HV7526
 HV7526!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7526!SPC MD       -   1.00000240  x   0.99995016  =   0.99995256
 HV7526!UTM  18      -   1.00000240  x   0.99989099  =   0.99989339
 HV7526
 HV7526_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4627799412(NAD 83)
 HV7526
 HV7526                          SUPERSEDED SURVEY CONTROL
 HV7526
 HV7526  NAD 83(1991)-  38 49 48.35878(N)    076 46 15.49720(W) AD(       ) 2
 HV7526  NAD 83(1986)-  38 49 48.35604(N)    076 46 15.51024(W) AD(       ) 2
 HV7526  NAD 27      -  38 49 47.94900(N)    076 46 16.62060(W) AD(       ) 2
 HV7526  NGVD 29 (07/19/86)   17.8    (m)           58.     (f) VERT ANG       
 HV7526
 HV7526.Superseded values are not recommended for survey control.
 HV7526
 HV7526.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7526.See file dsdata.pdf to determine how the superseded data were derived.
 HV7526
 HV7526_MARKER: I = METAL ROD
 HV7526_SETTING: 0 = UNSPECIFIED SETTING
 HV7526_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7526
 HV7526  HISTORY     - Date     Condition        Report By
 HV7526  HISTORY     - 1969     MONUMENTED       WSSC
 HV7526
 HV7526                          STATION DESCRIPTION
 HV7526
 HV7526'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7526'THE STATION IS LOCATED ABOUT .90 MILES NORTHWEST OF UPPER
 HV7526'MARLBORO ON BROWN STATION ROAD.
 HV7526'
 HV7526'TO REACH THE STATION FROM THE INTERSECTION OF BROWN STATION
 HV7526'ROAD AND ROUTE 408 (MARLBORO PIKE), GO NORTHWEST ON BROWN STATION
 HV7526'ROAD FOR .90 MILES TO THE STATION ON THE LEFT.  THE STATION IS
 HV7526'ABOUT 1900 FEET SOUTH OF BROOKE ROAD.
 HV7526'
 HV7526'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7526'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 26.9 FEET WEST OF THE
 HV7526'WEST EDGE OF BROWN STATION ROAD, 89.97 FEET SOUTHWEST OF PEPCO
 HV7526'POLE NO. 849492, 86.12 FEET NORTHWEST OF PEPCO POLE NO. 849491
 HV7526'AND 86.35 FEET SOUTHWEST OF AN X CUT IN THE WEST END OF A
 HV7526'HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7527 ***********************************************************************
 HV7527  DESIGNATION -  17356 WSSC 1970
 HV7527  PID         -  HV7527
 HV7527  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7527  COUNTRY     -  US
 HV7527  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7527
 HV7527                         *CURRENT SURVEY CONTROL
 HV7527  ______________________________________________________________________
 HV7527* NAD 83(1993) POSITION- 38 50 01.22769(N) 076 46 18.23922(W)   ADJUSTED
 HV7527* NAVD 88 ORTHO HEIGHT -    10.2   (meters)       33.    (feet) VERTCON3
 HV7527  ______________________________________________________________________
 HV7527  GEOID HEIGHT    -        -32.820 (meters)                     GEOID18
 HV7527  LAPLACE CORR    -         -6.11  (seconds)                    DEFLEC18
 HV7527  HORZ ORDER      -  SECOND
 HV7527
 HV7527.The horizontal coordinates were established by classical geodetic methods
 HV7527.and adjusted by the National Geodetic Survey in November 1994.
 HV7527
 HV7527.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7527.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7527
 HV7527.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7527.GEOID18 height accuracy estimate available here.
 HV7527
 HV7527.Click photographs - Photos may exist for this station.
 HV7527
 HV7527.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7527
 HV7527. The following values were computed from the NAD 83(1993) position.
 HV7527
 HV7527;                    North         East     Units Scale Factor Converg.
 HV7527;SPC MD       -   129,567.444   419,819.141   MT  0.99995012   +0 08 35.8
 HV7527;SPC MD       -   425,089.19  1,377,356.63   sFT  0.99995012   +0 08 35.8
 HV7527;UTM  18      - 4,299,810.714   346,218.696   MT  0.99989121   -1 06 40.3
 HV7527
 HV7527!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7527!SPC MD       -   1.00000356  x   0.99995012  =   0.99995368
 HV7527!UTM  18      -   1.00000356  x   0.99989121  =   0.99989477
 HV7527
 HV7527:                Primary Azimuth Mark                     Grid Az
 HV7527:SPC MD       -  17355 WSSC 1970                          170 23 40.0
 HV7527:UTM  18      -  17355 WSSC 1970                          171 38 56.1
 HV7527
 HV7527_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4621899810(NAD 83)
 HV7527
 HV7527|---------------------------------------------------------------------|
 HV7527| PID    Reference Object                     Distance      Geod. Az  |
 HV7527|                                                           dddmmss.s |
 HV7527| HV7526 17355 WSSC 1970                     402.302 METERS 1703215.8 |
 HV7527| HV7528 17494 WSSC 1970                     170.568 METERS 33954     |
 HV7527|---------------------------------------------------------------------|
 HV7527
 HV7527                          SUPERSEDED SURVEY CONTROL
 HV7527
 HV7527  NAD 83(1991)-  38 50 01.22747(N)    076 46 18.23919(W) AD(       ) 2
 HV7527  NAD 83(1986)-  38 50 01.22475(N)    076 46 18.25217(W) AD(       ) 2
 HV7527  NAD 27      -  38 50 00.81790(N)    076 46 19.36244(W) AD(       ) 2
 HV7527  NGVD 29 (07/19/86)   10.4    (m)           34.     (f) VERT ANG       
 HV7527
 HV7527.Superseded values are not recommended for survey control.
 HV7527
 HV7527.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7527.See file dsdata.pdf to determine how the superseded data were derived.
 HV7527
 HV7527_MARKER: I = METAL ROD
 HV7527_SETTING: 0 = UNSPECIFIED SETTING
 HV7527_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7527
 HV7527  HISTORY     - Date     Condition        Report By
 HV7527  HISTORY     - 1969     MONUMENTED       WSSC
 HV7527  HISTORY     - 20071116 GOOD             PB
 HV7527
 HV7527                          STATION DESCRIPTION
 HV7527
 HV7527'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7527'THE STATION IS LOCATED ABOUT 1.2 MILES NORTHWEST OF UPPER
 HV7527'MARLBORO ON BROWN STATION ROAD.
 HV7527'
 HV7527'TO REACH THE STATION FROM THE INTERSECTION OF BROWN STATION
 HV7527'ROAD AND ROUTE 408 (MARLBORO PIKE), GO NORTHWEST ON BROWN STATION
 HV7527'ROAD FOR 1.2 MILES TO THE STATION ON THE RIGHT.  THE STATION IS
 HV7527'ABOUT 650 FEET SOUTHWEST OF BROOKE ROAD.
 HV7527'
 HV7527'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7527'AND IS 4 INCHES BELOW THE SURFACE.  IT IS 93.19 FEET SOUTH OF C
 HV7527'AND P POLE NO. P-9247, 104.65 FEET NORTH OF C AND P POLE NO. 9246,
 HV7527'12.01 FEET SOUTHEAST OF AN X CUT IN THE I BEAM OF A GUARD RAIL,
 HV7527'2.83 FEET EAST OF AN X CUT IN THE I BEAM OF A GUARD RAIL AND
 HV7527'13.40 FEET NORTHEAST OF AN X CUT IN THE I BEAM OF A GUARD RAIL.
 HV7527
 HV7527                          STATION RECOVERY (2007)
 HV7527
 HV7527'RECOVERY NOTE BY PBS&J 2007
 HV7527'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7448 ***********************************************************************
 HV7448  DESIGNATION -  17357 WSSC 1970
 HV7448  PID         -  HV7448
 HV7448  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7448  COUNTRY     -  US
 HV7448  USGS QUAD   -  PISCATAWAY (2016)
 HV7448
 HV7448                         *CURRENT SURVEY CONTROL
 HV7448  ______________________________________________________________________
 HV7448* NAD 83(1993) POSITION- 38 40 25.03269(N) 076 58 18.80383(W)   ADJUSTED
 HV7448* NAVD 88 ORTHO HEIGHT -    61.8   (meters)      203.    (feet) VERTCON3
 HV7448  ______________________________________________________________________
 HV7448  GEOID HEIGHT    -        -32.618 (meters)                     GEOID18
 HV7448  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 HV7448  HORZ ORDER      -  SECOND
 HV7448
 HV7448.The horizontal coordinates were established by classical geodetic methods
 HV7448.and adjusted by the National Geodetic Survey in November 1994.
 HV7448
 HV7448.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7448.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7448
 HV7448.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7448.GEOID18 height accuracy estimate available here.
 HV7448
 HV7448.Click photographs - Photos may exist for this station.
 HV7448
 HV7448.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7448
 HV7448. The following values were computed from the NAD 83(1993) position.
 HV7448
 HV7448;                    North         East     Units Scale Factor Converg.
 HV7448;SPC MD       -   111,776.149   402,446.112   MT  0.99995604   +0 01 03.5
 HV7448;SPC MD       -   366,718.92  1,320,358.62   sFT  0.99995604   +0 01 03.5
 HV7448;UTM  18      - 4,282,403.839   328,461.430   MT  0.99996237   -1 13 57.0
 HV7448
 HV7448!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7448!SPC MD       -   0.99999543  x   0.99995604  =   0.99995147
 HV7448!UTM  18      -   0.99999543  x   0.99996237  =   0.99995780
 HV7448
 HV7448_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2846182403(NAD 83)
 HV7448
 HV7448                          SUPERSEDED SURVEY CONTROL
 HV7448
 HV7448  NAD 83(1991)-  38 40 25.03121(N)    076 58 18.80479(W) AD(       ) 2
 HV7448  NAD 83(1986)-  38 40 25.03121(N)    076 58 18.81858(W) AD(       ) 2
 HV7448  NAD 27      -  38 40 24.61447(N)    076 58 19.91099(W) AD(       ) 2
 HV7448  NGVD 29 (07/19/86)   62.0    (m)          203.     (f) VERT ANG       
 HV7448
 HV7448.Superseded values are not recommended for survey control.
 HV7448
 HV7448.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7448.See file dsdata.pdf to determine how the superseded data were derived.
 HV7448
 HV7448_MARKER: I = METAL ROD
 HV7448_SETTING: 0 = UNSPECIFIED SETTING
 HV7448_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7448
 HV7448  HISTORY     - Date     Condition        Report By
 HV7448  HISTORY     - 1969     MONUMENTED       WSSC
 HV7448
 HV7448                          STATION DESCRIPTION
 HV7448
 HV7448'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7448'THE STATION IS LOCATED AT THE NORTHEAST CORNER OF THE INTERSECTION
 HV7448'OF ROUTE 373 (TB-ACCOKEEK ROAD) AND BERRY ROAD, 1.1 MILES EAST
 HV7448'OF THE INTERSECTION OF ROUTE 373 AND BEALLE HILL ROAD, EAST OF
 HV7448'SHARPERVILLE.
 HV7448'
 HV7448'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7448'CENTER.  IT IS 50.39 FEET EAST OF AN 18-INCH CEDAR, 37.27 FEET
 HV7448'NORTHEAST OF A 14-INCH CEDAR, 25.29 FEET SOUTHWEST OF A 60-INCH
 HV7448'OAK.
 HV7448'
 HV7448'(NOTE--OWNER GAVE PERMISSION TO SET STATION ON PROPERTY.)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7402 ***********************************************************************
 HV7402  DESIGNATION -  17358 WSSC 1970
 HV7402  PID         -  HV7402
 HV7402  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7402  COUNTRY     -  US
 HV7402  USGS QUAD   -  BRANDYWINE (2016)
 HV7402
 HV7402                         *CURRENT SURVEY CONTROL
 HV7402  ______________________________________________________________________
 HV7402* NAD 83(1993) POSITION- 38 38 56.67115(N) 076 46 13.34216(W)   ADJUSTED
 HV7402* NAVD 88 ORTHO HEIGHT -    63.0   (meters)      207.    (feet) VERTCON3
 HV7402  ______________________________________________________________________
 HV7402  GEOID HEIGHT    -        -33.248 (meters)                     GEOID18
 HV7402  LAPLACE CORR    -         -4.49  (seconds)                    DEFLEC18
 HV7402  HORZ ORDER      -  SECOND
 HV7402
 HV7402.The horizontal coordinates were established by classical geodetic methods
 HV7402.and adjusted by the National Geodetic Survey in November 1994.
 HV7402
 HV7402.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7402.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7402
 HV7402.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7402.GEOID18 height accuracy estimate available here.
 HV7402
 HV7402.Click photographs - Photos may exist for this station.
 HV7402
 HV7402.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7402
 HV7402. The following values were computed from the NAD 83(1993) position.
 HV7402
 HV7402;                    North         East     Units Scale Factor Converg.
 HV7402;SPC MD       -   109,076.327   419,988.792   MT  0.99995764   +0 08 38.8
 HV7402;SPC MD       -   357,861.25  1,377,913.23   sFT  0.99995764   +0 08 38.8
 HV7402;UTM  18      - 4,279,322.039   345,940.509   MT  0.99989228   -1 06 21.2
 HV7402
 HV7402!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7402!SPC MD       -   0.99999532  x   0.99995764  =   0.99995296
 HV7402!UTM  18      -   0.99999532  x   0.99989228  =   0.99988761
 HV7402
 HV7402:                Primary Azimuth Mark                     Grid Az
 HV7402:SPC MD       -  BADEN                                    355 53 01.9
 HV7402:UTM  18      -  BADEN                                    357 08 01.9
 HV7402
 HV7402_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4594079322(NAD 83)
 HV7402
 HV7402|---------------------------------------------------------------------|
 HV7402| PID    Reference Object                     Distance      Geod. Az  |
 HV7402|                                                           dddmmss.s |
 HV7402| HV7380 BADEN                               APPROX. 1.3 KM 3560140.7 |
 HV7402|---------------------------------------------------------------------|
 HV7402
 HV7402                          SUPERSEDED SURVEY CONTROL
 HV7402
 HV7402  NAD 83(1991)-  38 38 56.67048(N)    076 46 13.34279(W) AD(       ) 2
 HV7402  NAD 83(1986)-  38 38 56.66881(N)    076 46 13.35774(W) AD(       ) 2
 HV7402  NAD 27      -  38 38 56.24552(N)    076 46 14.47436(W) AD(       ) 2
 HV7402  NGVD 29 (07/19/86)   63.3    (m)          208.     (f) VERT ANG       
 HV7402
 HV7402.Superseded values are not recommended for survey control.
 HV7402
 HV7402.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7402.See file dsdata.pdf to determine how the superseded data were derived.
 HV7402
 HV7402_MARKER: I = METAL ROD
 HV7402_SETTING: 0 = UNSPECIFIED SETTING
 HV7402_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7402
 HV7402  HISTORY     - Date     Condition        Report By
 HV7402  HISTORY     - 1969     MONUMENTED       WSSC
 HV7402
 HV7402                          STATION DESCRIPTION
 HV7402
 HV7402'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7402'THE STATION IS LOCATED .8 SOUTHEAST OF BADEN AT THE INTERSECTION
 HV7402'OF ROUTE 381 AND HORSEHEAD ROAD.
 HV7402'
 HV7402'TO REACH THE STATION FROM BADEN, GO SOUTHEAST OF ROUTE 381
 HV7402'TO HORSEHEAD ROAD.  THE STATION IS ON THE LEFT SIDE OF ROUTE
 HV7402'381 AT THE NORTHEAST CORNER OF THE INTERSECTION.
 HV7402'
 HV7402'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7402'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 1.5 FEET WEST OF A
 HV7402'WITNESS POST, 49.00 FEET NORTHEAST OF C AND P POLE NO. 219,
 HV7402'53.12 FEET NORTHEAST OF AN 18-INCH OAK, 52.95 FEET NORTH OF
 HV7402'AN 18-INCH TWIN OAK, 51.86 FEET NORTH OF A 16-INCH OAK, AND
 HV7402'64.30 FEET NORTHWEST OF A 12-INCH LOCUST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7401 ***********************************************************************
 HV7401  DESIGNATION -  17359 WSSC 1970
 HV7401  PID         -  HV7401
 HV7401  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7401  COUNTRY     -  US
 HV7401  USGS QUAD   -  BRANDYWINE (2016)
 HV7401
 HV7401                         *CURRENT SURVEY CONTROL
 HV7401  ______________________________________________________________________
 HV7401* NAD 83(1993) POSITION- 38 38 34.64795(N) 076 45 54.98658(W)   ADJUSTED
 HV7401* NAVD 88 ORTHO HEIGHT -    61.9   (meters)      203.    (feet) VERTCON3
 HV7401  ______________________________________________________________________
 HV7401  GEOID HEIGHT    -        -33.273 (meters)                     GEOID18
 HV7401  LAPLACE CORR    -         -4.32  (seconds)                    DEFLEC18
 HV7401  HORZ ORDER      -  SECOND
 HV7401
 HV7401.The horizontal coordinates were established by classical geodetic methods
 HV7401.and adjusted by the National Geodetic Survey in November 1994.
 HV7401
 HV7401.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7401.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7401
 HV7401.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7401.GEOID18 height accuracy estimate available here.
 HV7401
 HV7401.Click photographs - Photos may exist for this station.
 HV7401
 HV7401.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7401
 HV7401. The following values were computed from the NAD 83(1993) position.
 HV7401
 HV7401;                    North         East     Units Scale Factor Converg.
 HV7401;SPC MD       -   108,398.385   420,434.380   MT  0.99995806   +0 08 50.4
 HV7401;SPC MD       -   355,637.03  1,379,375.13   sFT  0.99995806   +0 08 50.4
 HV7401;UTM  18      - 4,278,634.583   346,371.173   MT  0.99989065   -1 06 09.2
 HV7401
 HV7401!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7401!SPC MD       -   0.99999550  x   0.99995806  =   0.99995356
 HV7401!UTM  18      -   0.99999550  x   0.99989065  =   0.99988615
 HV7401
 HV7401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4637178634(NAD 83)
 HV7401
 HV7401                          SUPERSEDED SURVEY CONTROL
 HV7401
 HV7401  NAD 83(1991)-  38 38 34.64727(N)    076 45 54.98725(W) AD(       ) 2
 HV7401  NAD 83(1986)-  38 38 34.64559(N)    076 45 55.00221(W) AD(       ) 2
 HV7401  NAD 27      -  38 38 34.22175(N)    076 45 56.11979(W) AD(       ) 2
 HV7401  NGVD 29 (07/19/86)   62.2    (m)          204.     (f) VERT ANG       
 HV7401
 HV7401.Superseded values are not recommended for survey control.
 HV7401
 HV7401.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7401.See file dsdata.pdf to determine how the superseded data were derived.
 HV7401
 HV7401_MARKER: I = METAL ROD
 HV7401_SETTING: 0 = UNSPECIFIED SETTING
 HV7401_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7401
 HV7401  HISTORY     - Date     Condition        Report By
 HV7401  HISTORY     - 1969     MONUMENTED       WSSC
 HV7401
 HV7401                          STATION DESCRIPTION
 HV7401
 HV7401'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7401'THE STATION IS LOCATED 1.3 MILES SOUTHEAST OF BADEN AT THE
 HV7401'INTERSECTION OF ROUTE 381 AND OREM DRIVE.
 HV7401'
 HV7401'TO REACH THE STATION FROM BADEN, GO SOUTHEAST ON ROUTE 381
 HV7401'TO THE INTERSECTION OF OREM DRIVE, AND THE STATION IS ON
 HV7401'THE RIGHT.
 HV7401'
 HV7401'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7401'AND IS 10 INCHES BELOW THE SURFACE.  IT IS 11.42 FEET EAST OF
 HV7401'C AND P POLE NO. 236, 87.43 FEET WEST OF C AND P POLE NO. 237,
 HV7401'56.39 FEET SOUTHWEST OF A POLE, 55.50 FEET NORTH OF THE NORTHWEST
 HV7401'CORNER OF A MARKET, 39.66 FEET WEST OF THE SOUTHWEST CORNER OF
 HV7401'A GAS PUMP, AND 42.51 FEET WEST OF THE NORTHWEST CORNER OF
 HV7401'A GAS PUMP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1424 ***********************************************************************
 HV1424  DESIGNATION -  1736 WSSC
 HV1424  PID         -  HV1424
 HV1424  STATE/COUNTY-  MD/MONTGOMERY
 HV1424  COUNTRY     -  US
 HV1424  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1424
 HV1424                         *CURRENT SURVEY CONTROL
 HV1424  ______________________________________________________________________
 HV1424* NAD 83(1986) POSITION- 38 58 36.     (N) 076 59 54.     (W)   SCALED
 HV1424* NAVD 88 ORTHO HEIGHT -    75.49  (+/-2cm)      247.7   (feet) VERTCON3
 HV1424  ______________________________________________________________________
 HV1424  GEOID HEIGHT    -        -32.026 (meters)                     GEOID18
 HV1424  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1424
 HV1424.The horizontal coordinates were scaled from a map and have
 HV1424.an estimated accuracy of +/- 6 seconds.
 HV1424
 HV1424.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1424.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1424
 HV1424.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1424.GEOID18 height accuracy estimate available here.
 HV1424
 HV1424.The vertical order pertains to the NGVD 29 superseded value.
 HV1424
 HV1424.Click photographs - Photos may exist for this station.
 HV1424
 HV1424;                    North         East    Units  Estimated Accuracy
 HV1424;SPC MD       -   145,420.      400,140.      MT  (+/- 180 meters Scaled)
 HV1424
 HV1424_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ268160(NAD 83)
 HV1424
 HV1424                          SUPERSEDED SURVEY CONTROL
 HV1424
 HV1424  NGVD 29 (11/26/84)   75.705  (m)          248.38   (f) ADJUSTED    2 0
 HV1424
 HV1424.Superseded values are not recommended for survey control.
 HV1424
 HV1424.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1424.See file dsdata.pdf to determine how the superseded data were derived.
 HV1424
 HV1424_MARKER: DD = SURVEY DISK
 HV1424_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1424_STAMPING: 1736
 HV1424_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1424
 HV1424  HISTORY     - Date     Condition        Report By
 HV1424  HISTORY     - UNK      MONUMENTED       WSSC
 HV1424  HISTORY     - 1952     GOOD             CGS
 HV1424  HISTORY     - 1952     GOOD             CGS
 HV1424
 HV1424                          STATION DESCRIPTION
 HV1424
 HV1424'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV1424'AT TAKOMA PARK.
 HV1424'IN TAKOMA PARK, PRINCE GEORGES COUNTY, AT THE JUNCTION OF
 HV1424'EAST-WEST HIGHWAY (STATE HIGHWAY 410) AND PRINCE GEORGES AVENUE
 HV1424'IN THE SOUTH ANGLE SOUTHWEST OF THE CURB LINE OF THE HIGHWAY,
 HV1424'57.63 FEET NORTH OF THE WEST CORNER OF A HOUSE, 25.74 FEET
 HV1424'NORTHWEST OF THE NORTH CORNER OF THE PORCH, 2.7 FEET FROM THE
 HV1424'FACE OF THE CURB ON PRINCE GEORGES AVENUE, AND 0.9 FOOT
 HV1424'FROM THE EDGE OF THE SIDEWALK.  A WASHINGTON SUBURBAN SANITARY
 HV1424'DISTRICT BRONZE DISK, STAMPED 1736 AND FASTENED TO THE TOP OF
 HV1424'AN IRON PIPE.
 HV1424
 HV1424                          STATION RECOVERY (1952)
 HV1424
 HV1424'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 HV1424'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7480 ***********************************************************************
 HV7480  DESIGNATION -  17360 WSSC 1970
 HV7480  PID         -  HV7480
 HV7480  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7480  COUNTRY     -  US
 HV7480  USGS QUAD   -  LANHAM (2016)
 HV7480
 HV7480                         *CURRENT SURVEY CONTROL
 HV7480  ______________________________________________________________________
 HV7480* NAD 83(1991) POSITION- 38 55 30.12237(N) 076 46 14.87603(W)   ADJUSTED
 HV7480* NAVD 88 ORTHO HEIGHT -    43.7   (meters)      143.    (feet) VERTCON3
 HV7480  ______________________________________________________________________
 HV7480  GEOID HEIGHT    -        -32.660 (meters)                     GEOID18
 HV7480  LAPLACE CORR    -         -5.60  (seconds)                    DEFLEC18
 HV7480  HORZ ORDER      -  SECOND
 HV7480
 HV7480.The horizontal coordinates were established by classical geodetic methods
 HV7480.and adjusted by the National Geodetic Survey in January 1992.
 HV7480
 HV7480.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7480.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7480
 HV7480.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7480.GEOID18 height accuracy estimate available here.
 HV7480
 HV7480.Click photographs - Photos may exist for this station.
 HV7480
 HV7480.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7480
 HV7480. The following values were computed from the NAD 83(1991) position.
 HV7480
 HV7480;                    North         East     Units Scale Factor Converg.
 HV7480;SPC MD       -   139,709.232   419,874.791   MT  0.99995022   +0 08 37.9
 HV7480;SPC MD       -   458,362.71  1,377,539.21   sFT  0.99995022   +0 08 37.9
 HV7480;UTM  18      - 4,309,948.246   346,496.544   MT  0.99989016   -1 06 46.1
 HV7480
 HV7480!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7480!SPC MD       -   0.99999828  x   0.99995022  =   0.99994850
 HV7480!UTM  18      -   0.99999828  x   0.99989016  =   0.99988844
 HV7480
 HV7480:                Primary Azimuth Mark                     Grid Az
 HV7480:SPC MD       -  CHURCH                                   042 49 59.6
 HV7480:UTM  18      -  CHURCH                                   044 05 23.6
 HV7480
 HV7480_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4649609948(NAD 83)
 HV7480
 HV7480|---------------------------------------------------------------------|
 HV7480| PID    Reference Object                     Distance      Geod. Az  |
 HV7480|                                                           dddmmss.s |
 HV7480| HV7461 CHURCH                              APPROX. 0.6 KM 0425837.5 |
 HV7480| HV7476 17361 WSSC 1970                     340.679 METERS 10152     |
 HV7480|---------------------------------------------------------------------|
 HV7480
 HV7480                          SUPERSEDED SURVEY CONTROL
 HV7480
 HV7480  NAD 83(1986)-  38 55 30.11984(N)    076 46 14.88786(W) AD(       ) 2
 HV7480  NAD 27      -  38 55 29.71903(N)    076 46 15.99846(W) AD(       ) 2
 HV7480  NGVD 29 (07/19/86)   43.9    (m)          144.     (f) VERT ANG       
 HV7480
 HV7480.Superseded values are not recommended for survey control.
 HV7480
 HV7480.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7480.See file dsdata.pdf to determine how the superseded data were derived.
 HV7480
 HV7480_MARKER: I = METAL ROD
 HV7480_SETTING: 0 = UNSPECIFIED SETTING
 HV7480_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7480
 HV7480  HISTORY     - Date     Condition        Report By
 HV7480  HISTORY     - 1969     MONUMENTED       WSSC
 HV7480  HISTORY     - 19960911 MARK NOT FOUND   USPSQD
 HV7480
 HV7480                          STATION DESCRIPTION
 HV7480
 HV7480'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7480'THE STATION IS LOCATED ON THE SOUTH SIDE OF WOODMORE ROAD, 1.75
 HV7480'MILES NORTH OF ROUTE 214 (CENTRAL AVENUE) AND .75 MILES WEST
 HV7480'OF CHURCH ROAD.
 HV7480'
 HV7480'TO REACH THE STATION FROM ROUTE 214 AND CHURCH ROAD, GO
 HV7480'NORTH ON CHURCH ROAD FOR 1.6 MILES TO THE INTERSECTION OF WOODMORE
 HV7480'ROAD.  TURN LEFT ON WOODMORE ROAD AND GO 0.80 MILES TO THE
 HV7480'STATION ON THE LEFT.
 HV7480'
 HV7480'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7480'AND IS 2 INCHES BELOW THE SURFACE.  IT IS 34.11 FEET SOUTHWEST
 HV7480'OF A POLE, 10.65 FEET SOUTHWEST OF A G AND E POLE NO. 329731,
 HV7480'14.24 FEET NORTHWEST OF A TACK IN THE TOP OF A FENCE POST, AND
 HV7480'10.4 FEET SOUTH OF THE SOUTH EDGE OF WOODMORE ROAD.
 HV7480
 HV7480                          STATION RECOVERY (1996)
 HV7480
 HV7480'RECOVERY NOTE BY US POWER SQUADRON 1996
 HV7480'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7476 ***********************************************************************
 HV7476  DESIGNATION -  17361 WSSC 1970
 HV7476  PID         -  HV7476
 HV7476  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7476  COUNTRY     -  US
 HV7476  USGS QUAD   -  LANHAM (2016)
 HV7476
 HV7476                         *CURRENT SURVEY CONTROL
 HV7476  ______________________________________________________________________
 HV7476* NAD 83(1991) POSITION- 38 55 27.84897(N) 076 46 01.03584(W)   ADJUSTED
 HV7476* NAVD 88 ORTHO HEIGHT -    42.3   (meters)      139.    (feet) VERTCON3
 HV7476  ______________________________________________________________________
 HV7476  GEOID HEIGHT    -        -32.672 (meters)                     GEOID18
 HV7476  LAPLACE CORR    -         -5.65  (seconds)                    DEFLEC18
 HV7476  HORZ ORDER      -  SECOND
 HV7476
 HV7476.The horizontal coordinates were established by classical geodetic methods
 HV7476.and adjusted by the National Geodetic Survey in January 1992.
 HV7476
 HV7476.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7476.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7476
 HV7476.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7476.GEOID18 height accuracy estimate available here.
 HV7476
 HV7476.Click photographs - Photos may exist for this station.
 HV7476
 HV7476.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7476
 HV7476. The following values were computed from the NAD 83(1991) position.
 HV7476
 HV7476;                    North         East     Units Scale Factor Converg.
 HV7476;SPC MD       -   139,639.974   420,208.339   MT  0.99995021   +0 08 46.6
 HV7476;SPC MD       -   458,135.48  1,378,633.53   sFT  0.99995021   +0 08 46.6
 HV7476;UTM  18      - 4,309,871.695   346,828.473   MT  0.99988890   -1 06 37.4
 HV7476
 HV7476!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7476!SPC MD       -   0.99999850  x   0.99995021  =   0.99994871
 HV7476!UTM  18      -   0.99999850  x   0.99988890  =   0.99988740
 HV7476
 HV7476_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4682809871(NAD 83)
 HV7476
 HV7476                          SUPERSEDED SURVEY CONTROL
 HV7476
 HV7476  NAD 83(1986)-  38 55 27.84640(N)    076 46 01.04768(W) AD(       ) 2
 HV7476  NAD 27      -  38 55 27.44554(N)    076 46 02.15873(W) AD(       ) 2
 HV7476  NGVD 29 (07/19/86)   42.5    (m)          139.     (f) VERT ANG       
 HV7476
 HV7476.Superseded values are not recommended for survey control.
 HV7476
 HV7476.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7476.See file dsdata.pdf to determine how the superseded data were derived.
 HV7476
 HV7476_MARKER: I = METAL ROD
 HV7476_SETTING: 0 = UNSPECIFIED SETTING
 HV7476_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7476
 HV7476  HISTORY     - Date     Condition        Report By
 HV7476  HISTORY     - 1969     MONUMENTED       WSSC
 HV7476  HISTORY     - 19960911 MARK NOT FOUND   USPSQD
 HV7476
 HV7476                          STATION DESCRIPTION
 HV7476
 HV7476'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7476'THE STATION IS LOCATED ON THE SOUTH SIDE OF WOODMORE ROAD,
 HV7476'1.6 MILES NORTH OF ROUTE 214 (CENTRAL AVENUE) AND .5 MILES
 HV7476'WEST OF CHURCH ROAD.
 HV7476'
 HV7476'TO REACH THE STATION FROM ROUTE 214 AND CHURCH ROAD, GO NORTH
 HV7476'ON CHURCH ROAD FOR 1.6 MILES TO THE INTERSECTION OF WOODMORE
 HV7476'ROAD.  TURN LEFT ON WOODMORE ROAD AND GO .55 MILES TO THE STATION
 HV7476'ON THE LEFT.
 HV7476'
 HV7476'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7476'CENTER AND IS 1.0 FOOT BELOW THE SURFACE.  IT IS 83.59 FEET
 HV7476'SOUTHEAST OF C AND P POLE NO. 22331, 69.54 FEET EAST OF A POLE,
 HV7476'25.12 FEET SOUTHEAST OF A 12-INCH LOCUST, 26.44 FEET SOUTHWEST
 HV7476'OF A 6-INCH SYCAMORE, 44.08 FEET SOUTHWEST OF A 4-INCH GUM AND
 HV7476'3.6 FEET SOUTH OF THE SOUTH EDGE OF WOODMORE ROAD.
 HV7476
 HV7476                          STATION RECOVERY (1996)
 HV7476
 HV7476'RECOVERY NOTE BY US POWER SQUADRON 1996
 HV7476'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6002 ***********************************************************************
 JV6002  DESIGNATION -  17362 WSSC 1969
 JV6002  PID         -  JV6002
 JV6002  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6002  COUNTRY     -  US
 JV6002  USGS QUAD   -  BELTSVILLE (2016)
 JV6002
 JV6002                         *CURRENT SURVEY CONTROL
 JV6002  ______________________________________________________________________
 JV6002* NAD 83(1991) POSITION- 39 01 09.58553(N) 076 57 51.52755(W)   ADJUSTED
 JV6002* NAVD 88 ORTHO HEIGHT -    87.0   (meters)      285.    (feet) VERTCON3
 JV6002  ______________________________________________________________________
 JV6002  GEOID HEIGHT    -        -32.056 (meters)                     GEOID18
 JV6002  LAPLACE CORR    -         -3.41  (seconds)                    DEFLEC18
 JV6002  HORZ ORDER      -  SECOND
 JV6002
 JV6002.The horizontal coordinates were established by classical geodetic methods
 JV6002.and adjusted by the National Geodetic Survey in January 1992.
 JV6002
 JV6002.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6002.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6002
 JV6002.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6002.GEOID18 height accuracy estimate available here.
 JV6002
 JV6002.Click photographs - Photos may exist for this station.
 JV6002
 JV6002.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6002
 JV6002. The following values were computed from the NAD 83(1991) position.
 JV6002
 JV6002;                    North         East     Units Scale Factor Converg.
 JV6002;SPC MD       -   150,152.567   403,090.432   MT  0.99995298   +0 01 20.6
 JV6002;SPC MD       -   492,625.55  1,322,472.53   sFT  0.99995298   +0 01 20.6
 JV6002;UTM  18      - 4,320,757.242   329,945.983   MT  0.99995609   -1 14 13.2
 JV6002
 JV6002!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6002!SPC MD       -   0.99999138  x   0.99995298  =   0.99994436
 JV6002!UTM  18      -   0.99999138  x   0.99995609  =   0.99994747
 JV6002
 JV6002_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2994520757(NAD 83)
 JV6002
 JV6002                          SUPERSEDED SURVEY CONTROL
 JV6002
 JV6002  NAD 83(1986)-  39 01 09.58475(N)    076 57 51.53814(W) AD(       ) 2
 JV6002  NAD 27      -  39 01 09.19064(N)    076 57 52.62624(W) AD(       ) 2
 JV6002  NGVD 29 (07/19/86)   87.2    (m)          286.     (f) VERT ANG       
 JV6002
 JV6002.Superseded values are not recommended for survey control.
 JV6002
 JV6002.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6002.See file dsdata.pdf to determine how the superseded data were derived.
 JV6002
 JV6002_MARKER: DD = SURVEY DISK
 JV6002_SETTING: 0 = UNSPECIFIED SETTING
 JV6002_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6002
 JV6002  HISTORY     - Date     Condition        Report By
 JV6002  HISTORY     - 1969     MONUMENTED       WSSC
 JV6002
 JV6002                          STATION DESCRIPTION
 JV6002
 JV6002'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV6002'THE STATION IS LOCATED 1.3 MILES SOUTHEAST OF THE U.S. NAVAL
 JV6002'ORDANCE LABORATORY AND 3.0 MILES NORTHWEST OF COLLEGE PARK.
 JV6002'
 JV6002'TO REACH THE STATION FROM COLLEGE PARK JUNCTION OF U.S. 1 AND
 JV6002'MD. RTE. 193, PROCEED WEST ALONG MD. RTE. 193 (UNIVERSITY
 JV6002'BOULEVARD) FOR 3.3 MILES TO MD. RTE. 212 (RIGGS ROAD).  TURN
 JV6002'RIGHT AND GO NORTH ALONG 212 FOR 2.9 MILES TO THE MD RTE 212
 JV6002'(RIGGS ROAD ) BRIDGE OVER THE CAPITAL BELTWAY AND THE STATION
 JV6002'AS DESCRIBED.
 JV6002'
 JV6002'THE STATION MARK IS STANDARD DISK SET FLUSH IN THE CONCRETE
 JV6002'SIDEWALK STAMPED RIGGS 1965.  IT IS 16.0 FEET WEST OF THE
 JV6002'CENTERLINE OF RIGGS ROAD, AND 7.7 FEET SOUTH OF THE
 JV6002'NORTHWEST CORNER OF THE BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8068 ***********************************************************************
 HV8068  DESIGNATION -  17363 WSSC 1970
 HV8068  PID         -  HV8068
 HV8068  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8068  COUNTRY     -  US
 HV8068  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8068
 HV8068                         *CURRENT SURVEY CONTROL
 HV8068  ______________________________________________________________________
 HV8068* NAD 83(1991) POSITION- 38 59 32.56406(N) 076 57 27.71540(W)   ADJUSTED
 HV8068* NAVD 88 ORTHO HEIGHT -    47.4   (meters)      156.    (feet) VERTCON3
 HV8068  ______________________________________________________________________
 HV8068  GEOID HEIGHT    -        -32.083 (meters)                     GEOID18
 HV8068  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 HV8068  HORZ ORDER      -  SECOND
 HV8068
 HV8068.The horizontal coordinates were established by classical geodetic methods
 HV8068.and adjusted by the National Geodetic Survey in January 1992.
 HV8068
 HV8068.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8068.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8068
 HV8068.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8068.GEOID18 height accuracy estimate available here.
 HV8068
 HV8068.Click photographs - Photos may exist for this station.
 HV8068
 HV8068.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8068
 HV8068. The following values were computed from the NAD 83(1991) position.
 HV8068
 HV8068;                    North         East     Units Scale Factor Converg.
 HV8068;SPC MD       -   147,161.039   403,664.624   MT  0.99995191   +0 01 35.6
 HV8068;SPC MD       -   482,810.84  1,324,356.35   sFT  0.99995191   +0 01 35.6
 HV8068;UTM  18      - 4,317,753.812   330,454.307   MT  0.99995397   -1 13 55.6
 HV8068
 HV8068!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8068!SPC MD       -   0.99999760  x   0.99995191  =   0.99994951
 HV8068!UTM  18      -   0.99999760  x   0.99995397  =   0.99995157
 HV8068
 HV8068:                Primary Azimuth Mark                     Grid Az
 HV8068:SPC MD       -  COLLEGE                                  127 09 25.3
 HV8068:UTM  18      -  COLLEGE                                  128 24 56.5
 HV8068
 HV8068_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3045417753(NAD 83)
 HV8068
 HV8068|---------------------------------------------------------------------|
 HV8068| PID    Reference Object                     Distance      Geod. Az  |
 HV8068|                                                           dddmmss.s |
 HV8068| HV7745 COLLEGE PARK UNIV OF MD CHAPEL      APPROX. 1.7 KM 1213525.7 |
 HV8068| HV1447 COLLEGE                             APPROX. 1.4 KM 1271100.9 |
 HV8068| HV8070 17364 WSSC 1970                     236.444 METERS 31100     |
 HV8068|---------------------------------------------------------------------|
 HV8068
 HV8068                          SUPERSEDED SURVEY CONTROL
 HV8068
 HV8068  NAD 83(1986)-  38 59 32.56316(N)    076 57 27.72626(W) AD(       ) 2
 HV8068  NAD 27      -  38 59 32.16721(N)    076 57 28.81503(W) AD(       ) 2
 HV8068  NGVD 29 (07/19/86)   47.6    (m)          156.     (f) VERT ANG       
 HV8068
 HV8068.Superseded values are not recommended for survey control.
 HV8068
 HV8068.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8068.See file dsdata.pdf to determine how the superseded data were derived.
 HV8068
 HV8068_MARKER: I = METAL ROD
 HV8068_SETTING: 0 = UNSPECIFIED SETTING
 HV8068_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8068
 HV8068  HISTORY     - Date     Condition        Report By
 HV8068  HISTORY     - 1969     MONUMENTED       WSSC
 HV8068
 HV8068                          STATION DESCRIPTION
 HV8068
 HV8068'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8068'THE STATION IS LOCATED ON THE SOUTHWEST SIDE OF ADELPHI ROAD,
 HV8068'.4 MILES NORTH OF THE INTERSECTION OF ADELPHI ROAD AND ROUTE
 HV8068'193 (UNIVERSITY BOULEVARD), NORTHWEST OF THE UNIVERSITY OF
 HV8068'MARYLAND.
 HV8068'
 HV8068'TO REACH THE STATION FROM THE INTERSECTION OF 26TH PLACE AND
 HV8068'ADELPHI ROAD, GO SOUTHEAST ON ADELPHI ROAD FOR 750 FEET TO THE
 HV8068'STATION ON THE RIGHT.
 HV8068'
 HV8068'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8068'AND IS 7 INCHES BELOW THE SURFACE.  IT IS 62.22 FEET NORTHEAST
 HV8068'OF THE SOUTHEAST CORNER OF THE CARPORT OF HOUSE NO. 8314, 62.83
 HV8068'FEET SOUTHEAST OF THE NORTHEAST CORNER OF THE SAME HOUSE, 34.00
 HV8068'FEET SOUTH OF PEPCO POLE NO. 859022, AND 39.26 FEET
 HV8068'SOUTHWEST OF PEPCO POLE NO. 859023.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8070 ***********************************************************************
 HV8070  DESIGNATION -  17364 WSSC 1970
 HV8070  PID         -  HV8070
 HV8070  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8070  COUNTRY     -  US
 HV8070  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8070
 HV8070                         *CURRENT SURVEY CONTROL
 HV8070  ______________________________________________________________________
 HV8070* NAD 83(1991) POSITION- 38 59 37.59351(N) 076 57 35.13143(W)   ADJUSTED
 HV8070* NAVD 88 ORTHO HEIGHT -    50.4   (meters)      165.    (feet) VERTCON3
 HV8070  ______________________________________________________________________
 HV8070  GEOID HEIGHT    -        -32.079 (meters)                     GEOID18
 HV8070  LAPLACE CORR    -         -3.32  (seconds)                    DEFLEC18
 HV8070  HORZ ORDER      -  SECOND
 HV8070
 HV8070.The horizontal coordinates were established by classical geodetic methods
 HV8070.and adjusted by the National Geodetic Survey in January 1992.
 HV8070
 HV8070.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8070.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8070
 HV8070.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8070.GEOID18 height accuracy estimate available here.
 HV8070
 HV8070.Click photographs - Photos may exist for this station.
 HV8070
 HV8070.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8070
 HV8070. The following values were computed from the NAD 83(1991) position.
 HV8070
 HV8070;                    North         East     Units Scale Factor Converg.
 HV8070;SPC MD       -   147,316.047   403,486.094   MT  0.99995196   +0 01 30.9
 HV8070;SPC MD       -   483,319.40  1,323,770.63   sFT  0.99995196   +0 01 30.9
 HV8070;UTM  18      - 4,317,912.704   330,279.225   MT  0.99995470   -1 14 00.4
 HV8070
 HV8070!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8070!SPC MD       -   0.99999713  x   0.99995196  =   0.99994909
 HV8070!UTM  18      -   0.99999713  x   0.99995470  =   0.99995183
 HV8070
 HV8070_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3027917912(NAD 83)
 HV8070
 HV8070                          SUPERSEDED SURVEY CONTROL
 HV8070
 HV8070  NAD 83(1986)-  38 59 37.59262(N)    076 57 35.14227(W) AD(       ) 2
 HV8070  NAD 27      -  38 59 37.19675(N)    076 57 36.23081(W) AD(       ) 2
 HV8070  NGVD 29 (07/19/86)   50.6    (m)          166.     (f) VERT ANG       
 HV8070
 HV8070.Superseded values are not recommended for survey control.
 HV8070
 HV8070.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8070.See file dsdata.pdf to determine how the superseded data were derived.
 HV8070
 HV8070_MARKER: I = METAL ROD
 HV8070_SETTING: 0 = UNSPECIFIED SETTING
 HV8070_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8070
 HV8070  HISTORY     - Date     Condition        Report By
 HV8070  HISTORY     - 1969     MONUMENTED       WSSC
 HV8070
 HV8070                          STATION DESCRIPTION
 HV8070
 HV8070'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8070'*THE STATION IS LOCATED EAST OF LANGLEY PARK AND NORTHWEST OF
 HV8070'THE UNIVERSITY OF MARYLAND AT THE SOUTHWEST CORNER OF ADELPHI
 HV8070'ROAD AND 26TH PLACE, .6 MILES NORTHWEST OF ROUTE 193
 HV8070'(UNIVERSITY BOULEVARD).
 HV8070'
 HV8070'TO REACH THE STATION FROM ROUTE 193, GO .6 MILES NORTHEAST
 HV8070'ON ADELPHI ROAD TO THE STATION ON THE LEFT.  THE STATION IS ON
 HV8070'THE EAST SIDE OF 26TH PLACE.
 HV8070'
 HV8070'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV8070'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 19.22 FEET
 HV8070'EAST OF THE CENTERLINE OF A MANHOLE ON 26TH PLACE, 10.15 FEET
 HV8070'WEST OF THE ANGLE IN A CONCRETE HEADWALL, 57.03 FEET SOUTHWEST
 HV8070'OF PEPCO POLE NO. 838718, 14.62 FEET WEST OF THE SOUTHWEST
 HV8070'CORNER OF A PILLAR ON THE NORTH SIDE OF A CONCRETE DRIVE, AND
 HV8070'17.66 FEET NORTHWEST OF THE NORTH CORNER OF A PILLAR ON THE
 HV8070'SOUTH SIDE OF A CONCRETE DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8064 ***********************************************************************
 HV8064  DESIGNATION -  17365 WSSC 1970
 HV8064  PID         -  HV8064
 HV8064  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8064  COUNTRY     -  US
 HV8064  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8064
 HV8064                         *CURRENT SURVEY CONTROL
 HV8064  ______________________________________________________________________
 HV8064* NAD 83(1991) POSITION- 38 59 16.19714(N) 076 56 09.07185(W)   ADJUSTED
 HV8064* NAVD 88 ORTHO HEIGHT -    21.1   (meters)       69.    (feet) VERTCON3
 HV8064  ______________________________________________________________________
 HV8064  GEOID HEIGHT    -        -32.132 (meters)                     GEOID18
 HV8064  LAPLACE CORR    -         -4.53  (seconds)                    DEFLEC18
 HV8064  HORZ ORDER      -  SECOND
 HV8064
 HV8064.The horizontal coordinates were established by classical geodetic methods
 HV8064.and adjusted by the National Geodetic Survey in January 1992.
 HV8064
 HV8064.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8064.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8064
 HV8064.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8064.GEOID18 height accuracy estimate available here.
 HV8064
 HV8064.Click photographs - Photos may exist for this station.
 HV8064
 HV8064.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8064
 HV8064. The following values were computed from the NAD 83(1991) position.
 HV8064
 HV8064;                    North         East     Units Scale Factor Converg.
 HV8064;SPC MD       -   146,657.450   405,557.482   MT  0.99995175   +0 02 24.9
 HV8064;SPC MD       -   481,158.65  1,330,566.51   sFT  0.99995175   +0 02 24.9
 HV8064;UTM  18      - 4,317,208.770   332,335.644   MT  0.99994616   -1 13 05.6
 HV8064
 HV8064!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8064!SPC MD       -   1.00000173  x   0.99995175  =   0.99995348
 HV8064!UTM  18      -   1.00000173  x   0.99994616  =   0.99994789
 HV8064
 HV8064:                Primary Azimuth Mark                     Grid Az
 HV8064:SPC MD       -  COLLEGE                                  245 36 47.0
 HV8064:UTM  18      -  COLLEGE                                  246 52 17.5
 HV8064
 HV8064_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3233517208(NAD 83)
 HV8064
 HV8064|---------------------------------------------------------------------|
 HV8064| PID    Reference Object                     Distance      Geod. Az  |
 HV8064|                                                           dddmmss.s |
 HV8064| HV8065 17366 WSSC 1970                     301.554 METERS 20515     |
 HV8064| HV1447 COLLEGE                             APPROX. 0.8 KM 2453911.9 |
 HV8064|---------------------------------------------------------------------|
 HV8064
 HV8064                          SUPERSEDED SURVEY CONTROL
 HV8064
 HV8064  NAD 83(1986)-  38 59 16.19613(N)    076 56 09.08275(W) AD(       ) 2
 HV8064  NAD 27      -  38 59 15.79986(N)    076 56 10.17395(W) AD(       ) 2
 HV8064  NGVD 29 (07/19/86)   21.3    (m)           70.     (f) VERT ANG       
 HV8064
 HV8064.Superseded values are not recommended for survey control.
 HV8064
 HV8064.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8064.See file dsdata.pdf to determine how the superseded data were derived.
 HV8064
 HV8064_MARKER: I = METAL ROD
 HV8064_SETTING: 0 = UNSPECIFIED SETTING
 HV8064_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8064
 HV8064  HISTORY     - Date     Condition        Report By
 HV8064  HISTORY     - 1969     MONUMENTED       WSSC
 HV8064
 HV8064                          STATION DESCRIPTION
 HV8064
 HV8064'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8064'THE STATION IS LOCATED AT THE UNIVERSITY OF MARYLAND ON THE
 HV8064'WEST SIDE OF ROUTE 1 (BALTIMORE AVENUE).
 HV8064'
 HV8064'TO REACH THE STATION FROM THE INTERSECTION OF CAMPUS DRIVE,
 HV8064'GO SOUTH ON ROUTE 1 FOR 200 FEET TO THE STATION ON THE RIGHT.
 HV8064'
 HV8064'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV8064'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 9.54 FEET
 HV8064'WEST OF AN X CUT IN THE TOP OF A CONCRETE CURB, 39.41 FEET
 HV8064'SOUTHEAST OF THE SOUTHEAST COENER OF THE NORTHERNMOST CORNER OF
 HV8064'A BRICK PILLAR, 9.74 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF
 HV8064'THE 2ND BRICK PILLAR, 18.90 FEET NORTHEAST OF THE NORTHEAST
 HV8064'CORNER OF THE 3RD BRICK PILLAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8065 ***********************************************************************
 HV8065  DESIGNATION -  17366 WSSC 1970
 HV8065  PID         -  HV8065
 HV8065  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8065  COUNTRY     -  US
 HV8065  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8065
 HV8065                         *CURRENT SURVEY CONTROL
 HV8065  ______________________________________________________________________
 HV8065* NAD 83(1991) POSITION- 38 59 07.35268(N) 076 56 14.41664(W)   ADJUSTED
 HV8065* NAVD 88 ORTHO HEIGHT -    24.3   (meters)       80.    (feet) VERTCON3
 HV8065  ______________________________________________________________________
 HV8065  GEOID HEIGHT    -        -32.130 (meters)                     GEOID18
 HV8065  LAPLACE CORR    -         -4.51  (seconds)                    DEFLEC18
 HV8065  HORZ ORDER      -  SECOND
 HV8065
 HV8065.The horizontal coordinates were established by classical geodetic methods
 HV8065.and adjusted by the National Geodetic Survey in January 1992.
 HV8065
 HV8065.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8065.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8065
 HV8065.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8065.GEOID18 height accuracy estimate available here.
 HV8065
 HV8065.Click photographs - Photos may exist for this station.
 HV8065
 HV8065.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8065
 HV8065. The following values were computed from the NAD 83(1991) position.
 HV8065
 HV8065;                    North         East     Units Scale Factor Converg.
 HV8065;SPC MD       -   146,384.633   405,429.042   MT  0.99995167   +0 02 21.6
 HV8065;SPC MD       -   480,263.58  1,330,145.12   sFT  0.99995167   +0 02 21.6
 HV8065;UTM  18      - 4,316,938.840   332,201.244   MT  0.99994671   -1 13 08.8
 HV8065
 HV8065!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8065!SPC MD       -   1.00000123  x   0.99995167  =   0.99995290
 HV8065!UTM  18      -   1.00000123  x   0.99994671  =   0.99994794
 HV8065
 HV8065_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3220116938(NAD 83)
 HV8065
 HV8065                          SUPERSEDED SURVEY CONTROL
 HV8065
 HV8065  NAD 83(1986)-  38 59 07.35168(N)    076 56 14.42756(W) AD(       ) 2
 HV8065  NAD 27      -  38 59 06.95527(N)    076 56 15.51860(W) AD(       ) 2
 HV8065  NGVD 29 (07/19/86)   24.5    (m)           80.     (f) VERT ANG       
 HV8065
 HV8065.Superseded values are not recommended for survey control.
 HV8065
 HV8065.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8065.See file dsdata.pdf to determine how the superseded data were derived.
 HV8065
 HV8065_MARKER: I = METAL ROD
 HV8065_SETTING: 0 = UNSPECIFIED SETTING
 HV8065_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8065
 HV8065  HISTORY     - Date     Condition        Report By
 HV8065  HISTORY     - 1969     MONUMENTED       WSSC
 HV8065
 HV8065                          STATION DESCRIPTION
 HV8065
 HV8065'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8065'*THE STATION IS LOCATED AT THE UNIVERSITY OF MARYLAND ON THE
 HV8065'WEST SIDE OF ROUTE 1 (BALTIMORE AVENUE).
 HV8065'
 HV8065'TO REACH THE STATION FROM THE INTERSECTION OF CAMPUS DRIVE,
 HV8065'GO SOUTH ON ROUTE 1 FOR 800 FEET TO THE STATION ON THE RIGHT.
 HV8065'
 HV8065'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV8065'CENTER AND IS 2 INCHES BELOW THE SURFACE.  IT IS 60.27 FEET EAST
 HV8065'OF THE NORTHEAST CORNER OF ROSSBOROUGH INN, 25.08 FEET SOUTHEAST
 HV8065'OF THE NORTHEAST CORNER OF THE NORTHWEST PILLAR, 4.76 FEET
 HV8065'NORTHEAST OF THE NORTHEAST CORNER OF THE SOUTHWEST PILLAR, AND
 HV8065'8.33 FEET NORTHWEST OF THE NORTHEAST CORNER OF THE SOUTHEAST
 HV8065'PILLAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7620 ***********************************************************************
 HV7620  DESIGNATION -  17367 WSSC 1970
 HV7620  PID         -  HV7620
 HV7620  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7620  COUNTRY     -  US
 HV7620  USGS QUAD   -  ANACOSTIA (2016)
 HV7620
 HV7620                         *CURRENT SURVEY CONTROL
 HV7620  ______________________________________________________________________
 HV7620* NAD 83(1993) POSITION- 38 51 27.76007(N) 076 54 19.70198(W)   ADJUSTED
 HV7620* NAVD 88 ORTHO HEIGHT -    90.1   (meters)      296.    (feet) VERTCON3
 HV7620  ______________________________________________________________________
 HV7620  GEOID HEIGHT    -        -32.386 (meters)                     GEOID18
 HV7620  LAPLACE CORR    -         -4.71  (seconds)                    DEFLEC18
 HV7620  HORZ ORDER      -  SECOND
 HV7620
 HV7620.The horizontal coordinates were established by classical geodetic methods
 HV7620.and adjusted by the National Geodetic Survey in November 1994.
 HV7620
 HV7620.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7620.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7620
 HV7620.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7620.GEOID18 height accuracy estimate available here.
 HV7620
 HV7620.Click photographs - Photos may exist for this station.
 HV7620
 HV7620.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7620
 HV7620. The following values were computed from the NAD 83(1993) position.
 HV7620
 HV7620;                    North         East     Units Scale Factor Converg.
 HV7620;SPC MD       -   132,215.163   408,204.517   MT  0.99994990   +0 03 33.6
 HV7620;SPC MD       -   433,775.91  1,339,250.99   sFT  0.99994990   +0 03 33.6
 HV7620;UTM  18      - 4,302,712.030   334,665.256   MT  0.99993661   -1 11 44.7
 HV7620
 HV7620!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7620!SPC MD       -   0.99999095  x   0.99994990  =   0.99994085
 HV7620!UTM  18      -   0.99999095  x   0.99993661  =   0.99992756
 HV7620
 HV7620:                Primary Azimuth Mark                     Grid Az
 HV7620:SPC MD       -  CONCORD                                  344 54 15.3
 HV7620:UTM  18      -  CONCORD                                  346 09 33.6
 HV7620
 HV7620_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3466502712(NAD 83)
 HV7620
 HV7620|---------------------------------------------------------------------|
 HV7620| PID    Reference Object                     Distance      Geod. Az  |
 HV7620|                                                           dddmmss.s |
 HV7620| HV7621 17368 WSSC 1970                     157.070 METERS 30138     |
 HV7620| HV7595 CONCORD                             APPROX. 0.6 KM 3445748.9 |
 HV7620|---------------------------------------------------------------------|
 HV7620
 HV7620                          SUPERSEDED SURVEY CONTROL
 HV7620
 HV7620  NAD 83(1991)-  38 51 27.75912(N)    076 54 19.70247(W) AD(       ) 2
 HV7620  NAD 83(1986)-  38 51 27.75774(N)    076 54 19.71477(W) AD(       ) 2
 HV7620  NAD 27      -  38 51 27.35311(N)    076 54 20.81056(W) AD(       ) 2
 HV7620  NGVD 29 (07/19/86)   90.3    (m)          296.     (f) VERT ANG       
 HV7620
 HV7620.Superseded values are not recommended for survey control.
 HV7620
 HV7620.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7620.See file dsdata.pdf to determine how the superseded data were derived.
 HV7620
 HV7620_MARKER: I = METAL ROD
 HV7620_SETTING: 0 = UNSPECIFIED SETTING
 HV7620_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7620
 HV7620  HISTORY     - Date     Condition        Report By
 HV7620  HISTORY     - 1969     MONUMENTED       WSSC
 HV7620
 HV7620                          STATION DESCRIPTION
 HV7620
 HV7620'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7620'THE STATION IS IN THE TOWN OF DISTRICT HEIGHTS ON THE
 HV7620'NORTHEAST SIDE OF MARLBORO PIKE (ROUTE 4), 400 FEET NORTHWEST
 HV7620'OF ROUTE 458 (SILVER HILL ROAD).
 HV7620'
 HV7620'TO REACH THE STATION FROM THE INTERSECTION OF SILVER HILL
 HV7620'ROAD, GO NORTHWEST ON ROUTE 4 FOR 400 FEET TO THE STATION ON
 HV7620'THE RIGHT.
 HV7620'
 HV7620'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7620'CENTER AND IS 4 INCHES BELOW THE SURFACE.  IT IS 54.62 FEET
 HV7620'SOUTH OF THE SOUTHWEST CORNER OF A PORCH OF HOUSE NO. 5900,
 HV7620'63.93 FEET SOUTHWEST OF THE SOUTHEAST CORNER OF A PORCH, 56.46
 HV7620'FEET EAST OF POLE NO. 84759, AND 69.80 FEET WEST OF POLE NO.
 HV7620'84760.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7621 ***********************************************************************
 HV7621  DESIGNATION -  17368 WSSC 1970
 HV7621  PID         -  HV7621
 HV7621  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7621  COUNTRY     -  US
 HV7621  USGS QUAD   -  ANACOSTIA (2016)
 HV7621
 HV7621                         *CURRENT SURVEY CONTROL
 HV7621  ______________________________________________________________________
 HV7621* NAD 83(1993) POSITION- 38 51 30.43213(N) 076 54 25.24810(W)   ADJUSTED
 HV7621* NAVD 88 ORTHO HEIGHT -    87.4   (meters)      287.    (feet) VERTCON3
 HV7621  ______________________________________________________________________
 HV7621  GEOID HEIGHT    -        -32.381 (meters)                     GEOID18
 HV7621  LAPLACE CORR    -         -4.69  (seconds)                    DEFLEC18
 HV7621  HORZ ORDER      -  SECOND
 HV7621
 HV7621.The horizontal coordinates were established by classical geodetic methods
 HV7621.and adjusted by the National Geodetic Survey in November 1994.
 HV7621
 HV7621.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7621.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7621
 HV7621.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7621.GEOID18 height accuracy estimate available here.
 HV7621
 HV7621.Click photographs - Photos may exist for this station.
 HV7621
 HV7621.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7621
 HV7621. The following values were computed from the NAD 83(1993) position.
 HV7621
 HV7621;                    North         East     Units Scale Factor Converg.
 HV7621;SPC MD       -   132,297.420   408,070.717   MT  0.99994989   +0 03 30.1
 HV7621;SPC MD       -   434,045.79  1,338,812.01   sFT  0.99994989   +0 03 30.1
 HV7621;UTM  18      - 4,302,797.196   334,533.292   MT  0.99993715   -1 11 48.2
 HV7621
 HV7621!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7621!SPC MD       -   0.99999137  x   0.99994989  =   0.99994126
 HV7621!UTM  18      -   0.99999137  x   0.99993715  =   0.99992852
 HV7621
 HV7621_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3453302797(NAD 83)
 HV7621
 HV7621                          SUPERSEDED SURVEY CONTROL
 HV7621
 HV7621  NAD 83(1991)-  38 51 30.43117(N)    076 54 25.24859(W) AD(       ) 2
 HV7621  NAD 83(1986)-  38 51 30.42980(N)    076 54 25.26088(W) AD(       ) 2
 HV7621  NAD 27      -  38 51 30.02522(N)    076 54 26.35649(W) AD(       ) 2
 HV7621  NGVD 29 (07/19/86)   87.6    (m)          287.     (f) VERT ANG       
 HV7621
 HV7621.Superseded values are not recommended for survey control.
 HV7621
 HV7621.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7621.See file dsdata.pdf to determine how the superseded data were derived.
 HV7621
 HV7621_MARKER: I = METAL ROD
 HV7621_SETTING: 0 = UNSPECIFIED SETTING
 HV7621_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7621
 HV7621  HISTORY     - Date     Condition        Report By
 HV7621  HISTORY     - 1969     MONUMENTED       WSSC
 HV7621
 HV7621                          STATION DESCRIPTION
 HV7621
 HV7621'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7621'THE STATION IS IN THE TOWN OF DISTRICT HEIGHTS ON THE NORTHEAST
 HV7621'SIDE OF MARLBORO PIKE (ROUTE 4), 900 FEET NORTHWEST OF ROUTE 458
 HV7621'(SILVER HILL ROAD).
 HV7621'
 HV7621'TO REACH THE STATION FROM THE INTERSECTION OF SILVER HILL ROAD,
 HV7621'GO NORTHWEST ON ROUTE 4 TO THE INTERSECTION OF WEBER DRIVE TO
 HV7621'THE STATION ON THE RIGHT.
 HV7621'
 HV7621'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7621'AND IS .8 FEET BELOW THE SURFACE.  IT IS 1.8 FEET NORTH OF A
 HV7621'CONCRETE CURB IN BACK OF A CATCH BASIN, 5.14 FEET EAST OF A FIRE
 HV7621'HYDRANT, 91.23 FEET SOUTHEAST OF C AND P POLE NO. 1, 4.34 FEET
 HV7621'WEST OF PEPCO POLE NO. 84755, 88.54 FEET FROM THE NORTHEAST
 HV7621'CORNER OF THE WESTERNMOST PILLAR ON THE WEST SIDE OF WEBER DRIVE
 HV7621'ON THE SOUTH SIDE OF ROUTE 4, AND 86.00 FEET FROM THE NORTHWEST
 HV7621'CORNER OF THE EASTERNMOST PILLAR ON THE EAST SIDE OF WEBER
 HV7621'DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7412 ***********************************************************************
 HV7412  DESIGNATION -  17369 WSSC 1970
 HV7412  PID         -  HV7412
 HV7412  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7412  COUNTRY     -  US
 HV7412  USGS QUAD   -  BRANDYWINE (2016)
 HV7412
 HV7412                         *CURRENT SURVEY CONTROL
 HV7412  ______________________________________________________________________
 HV7412* NAD 83(1991) POSITION- 38 43 45.78365(N) 076 49 38.57591(W)   ADJUSTED
 HV7412* NAVD 88 ORTHO HEIGHT -    69.6   (meters)      228.    (feet) VERTCON3
 HV7412  ______________________________________________________________________
 HV7412  GEOID HEIGHT    -        -32.876 (meters)                     GEOID18
 HV7412  LAPLACE CORR    -         -6.04  (seconds)                    DEFLEC18
 HV7412  HORZ ORDER      -  SECOND
 HV7412
 HV7412.The horizontal coordinates were established by classical geodetic methods
 HV7412.and adjusted by the National Geodetic Survey in January 1992.
 HV7412
 HV7412.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7412.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7412
 HV7412.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7412.GEOID18 height accuracy estimate available here.
 HV7412
 HV7412.Click photographs - Photos may exist for this station.
 HV7412
 HV7412.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7412
 HV7412. The following values were computed from the NAD 83(1991) position.
 HV7412
 HV7412;                    North         East     Units Scale Factor Converg.
 HV7412;SPC MD       -   117,980.048   415,009.339   MT  0.99995310   +0 06 30.0
 HV7412;SPC MD       -   387,072.87  1,361,576.47   sFT  0.99995310   +0 06 30.0
 HV7412;UTM  18      - 4,288,331.861   341,156.879   MT  0.99991071   -1 08 36.7
 HV7412
 HV7412!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7412!SPC MD       -   0.99999424  x   0.99995310  =   0.99994734
 HV7412!UTM  18      -   0.99999424  x   0.99991071  =   0.99990495
 HV7412
 HV7412:                Primary Azimuth Mark                     Grid Az
 HV7412:SPC MD       -  CHELTENHAM 2 RM 5                        343 22 08.7
 HV7412:UTM  18      -  CHELTENHAM 2 RM 5                        344 37 15.4
 HV7412
 HV7412_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4115688331(NAD 83)
 HV7412
 HV7412|---------------------------------------------------------------------|
 HV7412| PID    Reference Object                     Distance      Geod. Az  |
 HV7412|                                                           dddmmss.s |
 HV7412| HV7381 CHELTENHAM REFORM SCHOOL TANK       APPROX. 1.3 KM 3024327.5 |
 HV7412| HV7384 CHELTENHAM 2 RM 5                   APPROX. 1.0 KM 3432838.7 |
 HV7412|---------------------------------------------------------------------|
 HV7412
 HV7412                          SUPERSEDED SURVEY CONTROL
 HV7412
 HV7412  NAD 83(1986)-  38 43 45.78126(N)    076 49 38.59054(W) AD(       ) 2
 HV7412  NAD 27      -  38 43 45.36659(N)    076 49 39.69775(W) AD(       ) 2
 HV7412  NGVD 29 (07/19/86)   69.8    (m)          229.     (f) VERT ANG       
 HV7412
 HV7412.Superseded values are not recommended for survey control.
 HV7412
 HV7412.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7412.See file dsdata.pdf to determine how the superseded data were derived.
 HV7412
 HV7412_MARKER: I = METAL ROD
 HV7412_SETTING: 0 = UNSPECIFIED SETTING
 HV7412_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7412
 HV7412  HISTORY     - Date     Condition        Report By
 HV7412  HISTORY     - 1969     MONUMENTED       WSSC
 HV7412
 HV7412                          STATION DESCRIPTION
 HV7412
 HV7412'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7412'THE STATION IS LOCATED ON THE EAST SIDE OF THE INTERSECTION OF
 HV7412'THE PENNSYLVANIA RAILROAD AND CHERRY TREE CROSSING ROAD, 2.5
 HV7412'MILES NORTH OF BRANDYWINE.
 HV7412'
 HV7412'TO REACH THE STATION FROM ROUTE 301 (ROBERT CRAIN HIGHWAY), GO
 HV7412'SOUTHEAST ON CHERRY TREE CROSSING ROAD TO THE PENNSYLVANIA
 HV7412'RAILROAD AND THE STATION IS ON THE LEFT.
 HV7412'
 HV7412'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7412'AND IS 4 INCHES BELOW THE SURFACE.  IT IS 65.59 FEET SOUTHEAST
 HV7412'OF PEPCO POLE NO. 820230, 61.46 FEET WEST OF PEPCO POLE NO. 820752,
 HV7412'13.27 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE WOODEN
 HV7412'PLATFORM ON THE TRACKS, 7.65 FEET EAST OF AN X CUT IN THE EAST
 HV7412'TRACK, AND 2.3 FEET WEST OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7522 ***********************************************************************
 HV7522  DESIGNATION -  17370 WSSC 1970
 HV7522  PID         -  HV7522
 HV7522  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7522  COUNTRY     -  US
 HV7522  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7522
 HV7522                         *CURRENT SURVEY CONTROL
 HV7522  ______________________________________________________________________
 HV7522* NAD 83(1993) POSITION- 38 48 26.32195(N) 076 45 58.70647(W)   ADJUSTED
 HV7522* NAVD 88 ORTHO HEIGHT -    52.4   (meters)      172.    (feet) VERTCON3
 HV7522  ______________________________________________________________________
 HV7522  GEOID HEIGHT    -        -32.890 (meters)                     GEOID18
 HV7522  LAPLACE CORR    -         -6.27  (seconds)                    DEFLEC18
 HV7522  HORZ ORDER      -  SECOND
 HV7522
 HV7522.The horizontal coordinates were established by classical geodetic methods
 HV7522.and adjusted by the National Geodetic Survey in November 1994.
 HV7522
 HV7522.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7522.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7522
 HV7522.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7522.GEOID18 height accuracy estimate available here.
 HV7522
 HV7522.Click photographs - Photos may exist for this station.
 HV7522
 HV7522.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7522
 HV7522. The following values were computed from the NAD 83(1993) position.
 HV7522
 HV7522;                    North         East     Units Scale Factor Converg.
 HV7522;SPC MD       -   126,642.213   420,297.721   MT  0.99995056   +0 08 48.0
 HV7522;SPC MD       -   415,491.99  1,378,926.77   sFT  0.99995056   +0 08 48.0
 HV7522;UTM  18      - 4,296,875.885   346,633.111   MT  0.99988965   -1 06 25.8
 HV7522
 HV7522!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7522!SPC MD       -   0.99999694  x   0.99995056  =   0.99994751
 HV7522!UTM  18      -   0.99999694  x   0.99988965  =   0.99988660
 HV7522
 HV7522_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4663396875(NAD 83)
 HV7522
 HV7522|---------------------------------------------------------------------|
 HV7522| PID    Reference Object                     Distance      Geod. Az  |
 HV7522|                                                           dddmmss.s |
 HV7522| HV7520 17371 WSSC 1970                     363.140 METERS 12934     |
 HV7522| HV7523 17496 WSSC 1970                     170.325 METERS 30751     |
 HV7522|---------------------------------------------------------------------|
 HV7522
 HV7522                          SUPERSEDED SURVEY CONTROL
 HV7522
 HV7522  NAD 83(1991)-  38 48 26.32167(N)    076 45 58.70657(W) AD(       ) 2
 HV7522  NAD 83(1986)-  38 48 26.31897(N)    076 45 58.71995(W) AD(       ) 2
 HV7522  NAD 27      -  38 48 25.90899(N)    076 45 59.83150(W) AD(       ) 2
 HV7522  NGVD 29 (07/19/86)   52.6    (m)          173.     (f) VERT ANG       
 HV7522
 HV7522.Superseded values are not recommended for survey control.
 HV7522
 HV7522.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7522.See file dsdata.pdf to determine how the superseded data were derived.
 HV7522
 HV7522_MARKER: I = METAL ROD
 HV7522_SETTING: 0 = UNSPECIFIED SETTING
 HV7522_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7522
 HV7522  HISTORY     - Date     Condition        Report By
 HV7522  HISTORY     - 1969     MONUMENTED       WSSC
 HV7522
 HV7522                          STATION DESCRIPTION
 HV7522
 HV7522'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7522'THE STATION IS LOCATED ABOUT 1 MILE SOUTHWEST OF UPPER MARLBORO
 HV7522'ON THE SOUTHEAST SIDE OF CROOM STATION ROAD.
 HV7522'
 HV7522'TO REACH THE STATION FROM ROUTE 301 (ROBERT CRAIN HIGHWAY), GO
 HV7522'NORTHWEST ON CROOM STATION ROAD FOR .80 MILES TO THE STATION ON
 HV7522'THE LEFT.
 HV7522'
 HV7522'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7522'AND IS 5 INCHES BELOW THE SURFACE.  REFERENCE POINTS ARE TACKS IN
 HV7522'THE CORNERS OF BARNS.  IT IS 93.28 FEET SOUTHWEST OF THE SOUTHEAST
 HV7522'CORNER OF A BARN ON THE NORTHEAST SIDE OF THE ROAD, 54.60 FEET
 HV7522'NORTHEAST OF THE SOUTHWEST CORNER OF A BARN ON THE SOUTHEAST SIDE
 HV7522'OF THE ROAD, 18.44 FEET NORTHEAST OF THE NORTHWEST CORNER OF THE
 HV7522'SAME BARN, 35.54 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE
 HV7522'SAME BARN, AND 97.07 FEET SOUTHWEST OF PEPCO POLE NO. 864730.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7520 ***********************************************************************
 HV7520  DESIGNATION -  17371 WSSC 1970
 HV7520  PID         -  HV7520
 HV7520  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7520  COUNTRY     -  US
 HV7520  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7520
 HV7520                         *CURRENT SURVEY CONTROL
 HV7520  ______________________________________________________________________
 HV7520* NAD 83(1993) POSITION- 38 48 18.82099(N) 076 45 47.10419(W)   ADJUSTED
 HV7520* NAVD 88 ORTHO HEIGHT -    49.5   (meters)      162.    (feet) VERTCON3
 HV7520  ______________________________________________________________________
 HV7520  GEOID HEIGHT    -        -32.904 (meters)                     GEOID18
 HV7520  LAPLACE CORR    -         -6.26  (seconds)                    DEFLEC18
 HV7520  HORZ ORDER      -  SECOND
 HV7520
 HV7520.The horizontal coordinates were established by classical geodetic methods
 HV7520.and adjusted by the National Geodetic Survey in November 1994.
 HV7520
 HV7520.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7520.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7520
 HV7520.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7520.GEOID18 height accuracy estimate available here.
 HV7520
 HV7520.Click photographs - Photos may exist for this station.
 HV7520
 HV7520.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7520
 HV7520. The following values were computed from the NAD 83(1993) position.
 HV7520
 HV7520;                    North         East     Units Scale Factor Converg.
 HV7520;SPC MD       -   126,411.643   420,578.246   MT  0.99995060   +0 08 55.3
 HV7520;SPC MD       -   414,735.53  1,379,847.13   sFT  0.99995060   +0 08 55.3
 HV7520;UTM  18      - 4,296,639.246   346,908.507   MT  0.99988861   -1 06 18.3
 HV7520
 HV7520!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7520!SPC MD       -   0.99999740  x   0.99995060  =   0.99994800
 HV7520!UTM  18      -   0.99999740  x   0.99988861  =   0.99988601
 HV7520
 HV7520_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4690896639(NAD 83)
 HV7520
 HV7520                          SUPERSEDED SURVEY CONTROL
 HV7520
 HV7520  NAD 83(1991)-  38 48 18.82071(N)    076 45 47.10429(W) AD(       ) 2
 HV7520  NAD 83(1986)-  38 48 18.81798(N)    076 45 47.11769(W) AD(       ) 2
 HV7520  NAD 27      -  38 48 18.40787(N)    076 45 48.22963(W) AD(       ) 2
 HV7520  NGVD 29 (07/19/86)   49.7    (m)          163.     (f) VERT ANG       
 HV7520
 HV7520.Superseded values are not recommended for survey control.
 HV7520
 HV7520.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7520.See file dsdata.pdf to determine how the superseded data were derived.
 HV7520
 HV7520_MARKER: I = METAL ROD
 HV7520_SETTING: 0 = UNSPECIFIED SETTING
 HV7520_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7520
 HV7520  HISTORY     - Date     Condition        Report By
 HV7520  HISTORY     - 1969     MONUMENTED       WSSC
 HV7520
 HV7520                          STATION DESCRIPTION
 HV7520
 HV7520'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7520'THE STATION IS LOCATED ABOUT 1 MILE SOUTHWEST OF UPPER MARLBORO
 HV7520'ON THE SOUTHEAST SIDE OF CROOM STATION ROAD.
 HV7520'
 HV7520'TO REACH THE STATION FROM ROUTE 301 (ROBERT CRAIN HIGHWAY), GO
 HV7520'NORTHWEST ON CROOM STATION ROAD FOR .55 MILES TO THE STATION ON
 HV7520'THE LEFT.
 HV7520'
 HV7520'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7520'AND IS 1-INCH BELOW THE SURFACE.  IT IS 36.80 FEET SOUTHEAST
 HV7520'OF THE NORTHEAST CORNER OF A PILLAR, 25.30 FEET SOUTHEAST OF A
 HV7520'15-INCH CEDAR, 30.12 FEET NORTHEAST OF THE NORTHWEST CORNER OF
 HV7520'A PILLAR, 6.53 FEET NORTHWEST OF THE SOUTHWEST CORNER OF A
 HV7520'SPILLWAY, 51.69 FEET SOUTHWEST OF PEPCO POLE NO. 820367 AND
 HV7520'69.87 FEET SOUTHWEST OF A 14-INCH CEDAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5901 ***********************************************************************
 JV5901  DESIGNATION -  17372 WSSC 1970
 JV5901  PID         -  JV5901
 JV5901  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5901  COUNTRY     -  US
 JV5901  USGS QUAD   -  LAUREL (2016)
 JV5901
 JV5901                         *CURRENT SURVEY CONTROL
 JV5901  ______________________________________________________________________
 JV5901* NAD 83(1991) POSITION- 39 01 03.68234(N) 076 47 02.55935(W)   ADJUSTED
 JV5901* NAVD 88 ORTHO HEIGHT -    55.4   (meters)      182.    (feet) VERTCON3
 JV5901  ______________________________________________________________________
 JV5901  GEOID HEIGHT    -        -32.507 (meters)                     GEOID18
 JV5901  LAPLACE CORR    -         -5.67  (seconds)                    DEFLEC18
 JV5901  HORZ ORDER      -  SECOND
 JV5901
 JV5901.The horizontal coordinates were established by classical geodetic methods
 JV5901.and adjusted by the National Geodetic Survey in January 1992.
 JV5901
 JV5901.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5901.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5901
 JV5901.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5901.GEOID18 height accuracy estimate available here.
 JV5901
 JV5901.Click photographs - Photos may exist for this station.
 JV5901
 JV5901.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5901
 JV5901. The following values were computed from the NAD 83(1991) position.
 JV5901
 JV5901;                    North         East     Units Scale Factor Converg.
 JV5901;SPC MD       -   149,992.051   418,701.912   MT  0.99995290   +0 08 07.9
 JV5901;SPC MD       -   492,098.92  1,373,691.19   sFT  0.99995290   +0 08 07.9
 JV5901;UTM  18      - 4,320,253.722   345,549.721   MT  0.99989374   -1 07 24.2
 JV5901
 JV5901!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5901!SPC MD       -   0.99999641  x   0.99995290  =   0.99994931
 JV5901!UTM  18      -   0.99999641  x   0.99989374  =   0.99989015
 JV5901
 JV5901:                Primary Azimuth Mark                     Grid Az
 JV5901:SPC MD       -  DUCK                                     243 13 48.3
 JV5901:UTM  18      -  DUCK                                     244 29 20.4
 JV5901
 JV5901_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4554920253(NAD 83)
 JV5901
 JV5901|---------------------------------------------------------------------|
 JV5901| PID    Reference Object                     Distance      Geod. Az  |
 JV5901|                                                           dddmmss.s |
 JV5901| JV5900 17373 WSSC 1970                     APPROX. 0.5 KM 1591842.3 |
 JV5901| JV5860 DUCK                                APPROX. 0.9 KM 2432156.2 |
 JV5901|---------------------------------------------------------------------|
 JV5901
 JV5901                          SUPERSEDED SURVEY CONTROL
 JV5901
 JV5901  NAD 83(1986)-  39 01 03.68025(N)    076 47 02.57037(W) AD(       ) 2
 JV5901  NAD 27      -  39 01 03.28481(N)    076 47 03.67972(W) AD(       ) 2
 JV5901  NGVD 29 (07/19/86)   55.6    (m)          182.     (f) VERT ANG       
 JV5901
 JV5901.Superseded values are not recommended for survey control.
 JV5901
 JV5901.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5901.See file dsdata.pdf to determine how the superseded data were derived.
 JV5901
 JV5901_MARKER: I = METAL ROD
 JV5901_SETTING: 0 = UNSPECIFIED SETTING
 JV5901_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5901
 JV5901  HISTORY     - Date     Condition        Report By
 JV5901  HISTORY     - 1969     MONUMENTED       WSSC
 JV5901  HISTORY     - 19950709 GOOD             USPSQD
 JV5901
 JV5901                          STATION DESCRIPTION
 JV5901
 JV5901'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5901'THE STATION IS LOCATED ABOUT .50 MILES NORTHWEST OF BOWIE ON THE
 JV5901'EAST SIDE OF ROUTE 197, 1 MILE SOUTH OF THE INTERSECTION OF
 JV5901'ROUTE 197 AND JERICO PARK ROAD.
 JV5901'
 JV5901'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 564 AND
 JV5901'ROUTE 197, GO NORTHWEST ON ROUTE 197 FOR .70 MILES TO THE STATION
 JV5901'ON THE RIGHT.
 JV5901'
 JV5901'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5901'AND IS 4 INCHES BELOW THE SURFACE.  IT IS 80.06 FEET SOUTHWEST
 JV5901'OF THE SOUTHWEST CORNER OF HOUSE NO. 370, 44.35 FEET SOUTH OF
 JV5901'THE FACE OF A 20-INCH CEDAR, 39.91 FEET EAST OF THE LEFT SIDE OF
 JV5901'AN 8-INCH TWIN GUM, 84.42 FEET NORTHEAST OF AN 8-INCH CHERRY, 7.7
 JV5901'FEET EAST OF THE EAST EDGE OF A MACADAM ROAD, AND 33.30 FEET
 JV5901'NORTH OF C AND P POLE NO. P-23.
 JV5901
 JV5901                          STATION RECOVERY (1995)
 JV5901
 JV5901'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5901'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5900 ***********************************************************************
 JV5900  DESIGNATION -  17373 WSSC 1970
 JV5900  PID         -  JV5900
 JV5900  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5900  COUNTRY     -  US
 JV5900  USGS QUAD   -  LAUREL (2016)
 JV5900
 JV5900                         *CURRENT SURVEY CONTROL
 JV5900  ______________________________________________________________________
 JV5900* NAD 83(1991) POSITION- 39 00 47.90853(N) 076 46 54.92413(W)   ADJUSTED
 JV5900* NAVD 88 ORTHO HEIGHT -    56.7   (meters)      186.    (feet) VERTCON3
 JV5900  ______________________________________________________________________
 JV5900  GEOID HEIGHT    -        -32.518 (meters)                     GEOID18
 JV5900  LAPLACE CORR    -         -5.67  (seconds)                    DEFLEC18
 JV5900  HORZ ORDER      -  SECOND
 JV5900
 JV5900.The horizontal coordinates were established by classical geodetic methods
 JV5900.and adjusted by the National Geodetic Survey in January 1992.
 JV5900
 JV5900.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5900.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5900
 JV5900.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5900.GEOID18 height accuracy estimate available here.
 JV5900
 JV5900.Click photographs - Photos may exist for this station.
 JV5900
 JV5900.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5900
 JV5900. The following values were computed from the NAD 83(1991) position.
 JV5900
 JV5900;                    North         East     Units Scale Factor Converg.
 JV5900;SPC MD       -   149,506.084   418,886.744   MT  0.99995272   +0 08 12.7
 JV5900;SPC MD       -   490,504.54  1,374,297.59   sFT  0.99995272   +0 08 12.7
 JV5900;UTM  18      - 4,319,763.840   345,723.822   MT  0.99989308   -1 07 19.0
 JV5900
 JV5900!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5900!SPC MD       -   0.99999621  x   0.99995272  =   0.99994893
 JV5900!UTM  18      -   0.99999621  x   0.99989308  =   0.99988929
 JV5900
 JV5900_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4572319763(NAD 83)
 JV5900
 JV5900                          SUPERSEDED SURVEY CONTROL
 JV5900
 JV5900  NAD 83(1986)-  39 00 47.90643(N)    076 46 54.93519(W) AD(       ) 2
 JV5900  NAD 27      -  39 00 47.51075(N)    076 46 56.04478(W) AD(       ) 2
 JV5900  NGVD 29 (07/19/86)   56.9    (m)          187.     (f) VERT ANG       
 JV5900
 JV5900.Superseded values are not recommended for survey control.
 JV5900
 JV5900.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5900.See file dsdata.pdf to determine how the superseded data were derived.
 JV5900
 JV5900_MARKER: I = METAL ROD
 JV5900_SETTING: 0 = UNSPECIFIED SETTING
 JV5900_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5900
 JV5900  HISTORY     - Date     Condition        Report By
 JV5900  HISTORY     - 1969     MONUMENTED       WSSC
 JV5900  HISTORY     - 19950709 MARK NOT FOUND   USPSQD
 JV5900
 JV5900                          STATION DESCRIPTION
 JV5900
 JV5900'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5900'THE STATION IS LOCATED IN THE TOWN OF BOWIE ON THE WEST SIDE OF
 JV5900'ROUTE 197, ABOUT 100 FEET SOUTH OF MAPLE AVENUE.
 JV5900'
 JV5900'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 564, GO
 JV5900'NORTHWEST ON ROUTE 197 FOR .40 MILES TO THE STATION ON THE LEFT.
 JV5900'
 JV5900'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5900'AND IS 1-INCH BELOW THE SURFACE.  IT IS 84.07 FEET SOUTH OF A
 JV5900'FIRE HYDRANT, 44.10 FEET SOUTHEAST OF C AND P POLE NO. 12, 45.78
 JV5900'FEET SOUTHWEST OF A 12-INCH OAK, 56.06 FEET WEST OF A 12-INCH OAK
 JV5900'AND 5.83 FEET NORTHWEST OF A BOLT IN THE ANGLE OF A CONCRETE
 JV5900'HEADWALL - ALSO BENCH MARK 2105.
 JV5900
 JV5900                          STATION RECOVERY (1995)
 JV5900
 JV5900'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5900'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7355 ***********************************************************************
 HV7355  DESIGNATION -  17374 WSSC 1970
 HV7355  PID         -  HV7355
 HV7355  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7355  COUNTRY     -  US
 HV7355  USGS QUAD   -  BENEDICT (2016)
 HV7355
 HV7355                         *CURRENT SURVEY CONTROL
 HV7355  ______________________________________________________________________
 HV7355* NAD 83(1993) POSITION- 38 33 12.76168(N) 076 41 27.87496(W)   ADJUSTED
 HV7355* NAVD 88 ORTHO HEIGHT -    22.2   (meters)       73.    (feet) VERTCON3
 HV7355  ______________________________________________________________________
 HV7355  GEOID HEIGHT    -        -33.593 (meters)                     GEOID18
 HV7355  LAPLACE CORR    -         -3.85  (seconds)                    DEFLEC18
 HV7355  HORZ ORDER      -  SECOND
 HV7355
 HV7355.The horizontal coordinates were established by classical geodetic methods
 HV7355.and adjusted by the National Geodetic Survey in November 1994.
 HV7355
 HV7355.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7355.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7355
 HV7355.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7355.GEOID18 height accuracy estimate available here.
 HV7355
 HV7355.Click photographs - Photos may exist for this station.
 HV7355
 HV7355.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7355
 HV7355. The following values were computed from the NAD 83(1993) position.
 HV7355
 HV7355;                    North         East     Units Scale Factor Converg.
 HV7355;SPC MD       -    98,492.530   426,927.322   MT  0.99996557   +0 11 38.0
 HV7355;SPC MD       -   323,137.58  1,400,677.39   sFT  0.99996557   +0 11 38.0
 HV7355;UTM  18      - 4,268,590.389   352,646.140   MT  0.99986739   -1 03 14.9
 HV7355
 HV7355!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7355!SPC MD       -   1.00000178  x   0.99996557  =   0.99996735
 HV7355!UTM  18      -   1.00000178  x   0.99986739  =   0.99986917
 HV7355
 HV7355:                Primary Azimuth Mark                     Grid Az
 HV7355:SPC MD       -  17375 WSSC 1970                          354 51 58.4
 HV7355:UTM  18      -  17375 WSSC 1970                          356 06 51.3
 HV7355
 HV7355_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5264668590(NAD 83)
 HV7355
 HV7355|---------------------------------------------------------------------|
 HV7355| PID    Reference Object                     Distance      Geod. Az  |
 HV7355|                                                           dddmmss.s |
 HV7355| HV7349 CHALK POINT PEPCO MICROWAVE         APPROX. 0.7 KM 0223804.2 |
 HV7355| HV7345 DOWELL 2                            298.339 METERS 30708     |
 HV7355| HV7356 17375 WSSC 1970                     APPROX. 1.0 KM 3550336.4 |
 HV7355|---------------------------------------------------------------------|
 HV7355
 HV7355                          SUPERSEDED SURVEY CONTROL
 HV7355
 HV7355  NAD 83(1991)-  38 33 12.76167(N)    076 41 27.87634(W) AD(       ) 2
 HV7355  NAD 83(1986)-  38 33 12.76066(N)    076 41 27.89068(W) AD(       ) 2
 HV7355  NAD 27      -  38 33 12.32661(N)    076 41 29.02472(W) AD(       ) 2
 HV7355  NGVD 29 (07/19/86)   22.5    (m)           74.     (f) VERT ANG       
 HV7355
 HV7355.Superseded values are not recommended for survey control.
 HV7355
 HV7355.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7355.See file dsdata.pdf to determine how the superseded data were derived.
 HV7355
 HV7355_MARKER: I = METAL ROD
 HV7355_SETTING: 0 = UNSPECIFIED SETTING
 HV7355_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7355
 HV7355  HISTORY     - Date     Condition        Report By
 HV7355  HISTORY     - 1969     MONUMENTED       WSSC
 HV7355
 HV7355                          STATION DESCRIPTION
 HV7355
 HV7355'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7355'THE STATION IS LOCATED ON THE EAST SIDE OF A SERVICE DRIVE TO
 HV7355'CHALK POINT POWER PLANT, .75 MILES SOUTH OF EAGLE HARBOR ROAD.
 HV7355'
 HV7355'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 381, GO
 HV7355'SOUTHEAST ON EAGLE HARBOR ROAD FOR ABOUT 2.0 MILES TO SERVICE
 HV7355'LEADING TO CHALK POINT POWER PLANT.  GO SOUTH ON SERVICE DRIVE FOR
 HV7355'.75 MILES TO THE STATION ON THE LEFT.
 HV7355'
 HV7355'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7355'AND IS 7 INCHES BELOW THE SURFACE.  IT IS 2.72 FEET WEST OF A
 HV7355'WITNESS POST, 13.02 FEET NORTHEAST OF AN X CUT IN AN I BEAM, 2.86
 HV7355'FEET EAST OF AN X CUT IN AN I BEAM, AND 12.67 FEET SOUTHEAST OF AN
 HV7355'X CUT IN AN I BEAM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7356 ***********************************************************************
 HV7356  DESIGNATION -  17375 WSSC 1970
 HV7356  PID         -  HV7356
 HV7356  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7356  COUNTRY     -  US
 HV7356  USGS QUAD   -  BENEDICT (2016)
 HV7356
 HV7356                         *CURRENT SURVEY CONTROL
 HV7356  ______________________________________________________________________
 HV7356* NAD 83(1993) POSITION- 38 33 43.58069(N) 076 41 31.26759(W)   ADJUSTED
 HV7356* NAVD 88 ORTHO HEIGHT -    31.0   (meters)      102.    (feet) VERTCON3
 HV7356  ______________________________________________________________________
 HV7356  GEOID HEIGHT    -        -33.576 (meters)                     GEOID18
 HV7356  LAPLACE CORR    -         -3.96  (seconds)                    DEFLEC18
 HV7356  HORZ ORDER      -  SECOND
 HV7356
 HV7356.The horizontal coordinates were established by classical geodetic methods
 HV7356.and adjusted by the National Geodetic Survey in November 1994.
 HV7356
 HV7356.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7356.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7356
 HV7356.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7356.GEOID18 height accuracy estimate available here.
 HV7356
 HV7356.Click photographs - Photos may exist for this station.
 HV7356
 HV7356.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7356
 HV7356. The following values were computed from the NAD 83(1993) position.
 HV7356
 HV7356;                    North         East     Units Scale Factor Converg.
 HV7356;SPC MD       -    99,442.527   426,841.972   MT  0.99996475   +0 11 35.9
 HV7356;SPC MD       -   326,254.36  1,400,397.37   sFT  0.99996475   +0 11 35.9
 HV7356;UTM  18      - 4,269,541.927   352,581.510   MT  0.99986763   -1 03 17.8
 HV7356
 HV7356!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7356!SPC MD       -   1.00000040  x   0.99996475  =   0.99996515
 HV7356!UTM  18      -   1.00000040  x   0.99986763  =   0.99986803
 HV7356
 HV7356:                Primary Azimuth Mark                     Grid Az
 HV7356:SPC MD       -  17374 WSSC 1970                          174 51 58.3
 HV7356:UTM  18      -  17374 WSSC 1970                          176 06 52.0
 HV7356
 HV7356_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5258169541(NAD 83)
 HV7356
 HV7356|---------------------------------------------------------------------|
 HV7356| PID    Reference Object                     Distance      Geod. Az  |
 HV7356|                                                           dddmmss.s |
 HV7356| HV7349 CHALK POINT PEPCO MICROWAVE         467.915 METERS 1315746.9 |
 HV7356| HV7355 17374 WSSC 1970                     APPROX. 1.0 KM 1750334.2 |
 HV7356|---------------------------------------------------------------------|
 HV7356
 HV7356                          SUPERSEDED SURVEY CONTROL
 HV7356
 HV7356  NAD 83(1991)-  38 33 43.58069(N)    076 41 31.26893(W) AD(       ) 2
 HV7356  NAD 83(1986)-  38 33 43.57967(N)    076 41 31.28335(W) AD(       ) 2
 HV7356  NAD 27      -  38 33 43.13508(N)    076 41 32.41588(W) AD(       ) 2
 HV7356  NGVD 29 (07/19/86)   31.3    (m)          103.     (f) VERT ANG       
 HV7356
 HV7356.Superseded values are not recommended for survey control.
 HV7356
 HV7356.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7356.See file dsdata.pdf to determine how the superseded data were derived.
 HV7356
 HV7356_MARKER: I = METAL ROD
 HV7356_SETTING: 0 = UNSPECIFIED SETTING
 HV7356_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7356
 HV7356  HISTORY     - Date     Condition        Report By
 HV7356  HISTORY     - 1969     MONUMENTED       WSSC
 HV7356
 HV7356                          STATION DESCRIPTION
 HV7356
 HV7356'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7356'THE STATION IS LOCATED ON THE EAST SIDE OF A SERVICE DRIVE TO
 HV7356'CHALK POINT POWER PLANT, .2 MILES SOUTH OF EAGLE HARBOR ROAD.
 HV7356'
 HV7356'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 381, GO
 HV7356'SOUTHEAST ON EAGLE HARBOR ROAD FOR ABOUT 2.0 MILES TO A SERVICE
 HV7356'DRIVE LEADING TO CHALK POINT POWER PLANT.  GO SOUTH ON SERVICE
 HV7356'DRIVE FOR .20 MILES TO THE STATION ON THE LEFT.
 HV7356'
 HV7356'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7356'AND IS 7 INCHES BELOW THE SURFACE.  IT IS 2.17 FEET WEST OF A
 HV7356'WITNESS POST, 12.61 FEET NORTHEAST OF AN X CUT IN AN I BEAM, 3.00
 HV7356'FEET EAST OF AN X CUT IN AN I BEAM, AND 13.17 FEET SOUTHEAST OF AN
 HV7356'X CUT IN AN I BEAM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7374 ***********************************************************************
 HV7374  DESIGNATION -  17376 WSSC 1970
 HV7374  PID         -  HV7374
 HV7374  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7374  COUNTRY     -  US
 HV7374  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7374
 HV7374                         *CURRENT SURVEY CONTROL
 HV7374  ______________________________________________________________________
 HV7374* NAD 83(1993) POSITION- 38 40 54.64630(N) 076 43 39.68116(W)   ADJUSTED
 HV7374* NAVD 88 ORTHO HEIGHT -    39.0   (meters)      128.    (feet) VERTCON3
 HV7374  ______________________________________________________________________
 HV7374  GEOID HEIGHT    -        -33.281 (meters)                     GEOID18
 HV7374  LAPLACE CORR    -         -4.32  (seconds)                    DEFLEC18
 HV7374  HORZ ORDER      -  SECOND
 HV7374
 HV7374.The horizontal coordinates were established by classical geodetic methods
 HV7374.and adjusted by the National Geodetic Survey in November 1994.
 HV7374
 HV7374.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7374.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7374
 HV7374.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7374.GEOID18 height accuracy estimate available here.
 HV7374
 HV7374.Click photographs - Photos may exist for this station.
 HV7374
 HV7374.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7374
 HV7374. The following values were computed from the NAD 83(1993) position.
 HV7374
 HV7374;                    North         East     Units Scale Factor Converg.
 HV7374;SPC MD       -   112,724.233   423,693.492   MT  0.99995555   +0 10 15.3
 HV7374;SPC MD       -   369,829.42  1,390,067.73   sFT  0.99995555   +0 10 15.3
 HV7374;UTM  18      - 4,282,887.974   349,723.665   MT  0.99987810   -1 04 48.0
 HV7374
 HV7374!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7374!SPC MD       -   0.99999910  x   0.99995555  =   0.99995465
 HV7374!UTM  18      -   0.99999910  x   0.99987810  =   0.99987720
 HV7374
 HV7374:                Primary Azimuth Mark                     Grid Az
 HV7374:SPC MD       -  EAGLE                                    116 16 11.6
 HV7374:UTM  18      -  EAGLE                                    117 31 14.9
 HV7374
 HV7374_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4972382887(NAD 83)
 HV7374
 HV7374|---------------------------------------------------------------------|
 HV7374| PID    Reference Object                     Distance      Geod. Az  |
 HV7374|                                                           dddmmss.s |
 HV7374| HV7372 17377 WSSC 1970                     341.187 METERS 00703     |
 HV7374| HV7364 EAGLE                               APPROX. 1.0 KM 1162626.9 |
 HV7374|---------------------------------------------------------------------|
 HV7374
 HV7374                          SUPERSEDED SURVEY CONTROL
 HV7374
 HV7374  NAD 83(1991)-  38 40 54.64555(N)    076 43 39.68155(W) AD(       ) 2
 HV7374  NAD 83(1986)-  38 40 54.64365(N)    076 43 39.69679(W) AD(       ) 2
 HV7374  NAD 27      -  38 40 54.22104(N)    076 43 40.81508(W) AD(       ) 2
 HV7374  NGVD 29 (07/19/86)   39.3    (m)          129.     (f) VERT ANG       
 HV7374
 HV7374.Superseded values are not recommended for survey control.
 HV7374
 HV7374.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7374.See file dsdata.pdf to determine how the superseded data were derived.
 HV7374
 HV7374_MARKER: I = METAL ROD
 HV7374_SETTING: 0 = UNSPECIFIED SETTING
 HV7374_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7374
 HV7374  HISTORY     - Date     Condition        Report By
 HV7374  HISTORY     - 1969     MONUMENTED       WSSC
 HV7374
 HV7374                          STATION DESCRIPTION
 HV7374
 HV7374'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7374'THE STATION IS LOCATED ABOUT 1.8 MILES WEST OF THE PATUXENT
 HV7374'RIVER, .5 MILES NORTHWEST OF BALD EAGLE SCHOOL ROAD ON THE WEST
 HV7374'SIDE OF ROUTE 382.
 HV7374'
 HV7374'TO REACH THE STATION FROM THE INTERSECTION OF BALD EAGLE SCHOOL
 HV7374'ROAD, GO NORTHWEST ON ROUTE 382 FOR .50 MILES TO THE STATION ON
 HV7374'THE LEFT.
 HV7374'
 HV7374'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7374'AND IS 5 INCHES BELOW THE SURFACE.  IT IS 4.32 FEET EAST OF POLE
 HV7374'NO. 10, 17.4 FEET WEST OF THE WEST EDGE OF ROUTE 382, 46.66 FEET
 HV7374'NORTHEAST OF THE NORTHWEST CORNER OF A HOUSE, 50.85 FEET NORTH OF
 HV7374'THE SOUTHEAST CORNER OF A HOUSE AND 67.12 FEET NORTH OF THE FACE
 HV7374'OF A 12-INCH MAPLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7372 ***********************************************************************
 HV7372  DESIGNATION -  17377 WSSC 1970
 HV7372  PID         -  HV7372
 HV7372  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7372  COUNTRY     -  US
 HV7372  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7372
 HV7372                         *CURRENT SURVEY CONTROL
 HV7372  ______________________________________________________________________
 HV7372* NAD 83(1993) POSITION- 38 41 05.62720(N) 076 43 37.94831(W)   ADJUSTED
 HV7372* NAVD 88 ORTHO HEIGHT -    35.4   (meters)      116.    (feet) VERTCON3
 HV7372  ______________________________________________________________________
 HV7372  GEOID HEIGHT    -        -33.276 (meters)                     GEOID18
 HV7372  LAPLACE CORR    -         -4.38  (seconds)                    DEFLEC18
 HV7372  HORZ ORDER      -  SECOND
 HV7372
 HV7372.The horizontal coordinates were established by classical geodetic methods
 HV7372.and adjusted by the National Geodetic Survey in November 1994.
 HV7372
 HV7372.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7372.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7372
 HV7372.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7372.GEOID18 height accuracy estimate available here.
 HV7372
 HV7372.Click photographs - Photos may exist for this station.
 HV7372
 HV7372.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7372
 HV7372. The following values were computed from the NAD 83(1993) position.
 HV7372
 HV7372;                    North         East     Units Scale Factor Converg.
 HV7372;SPC MD       -   113,062.948   423,734.362   MT  0.99995537   +0 10 16.4
 HV7372;SPC MD       -   370,940.69  1,390,201.82   sFT  0.99995537   +0 10 16.4
 HV7372;UTM  18      - 4,283,225.690   349,771.915   MT  0.99987792   -1 04 47.2
 HV7372
 HV7372!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7372!SPC MD       -   0.99999966  x   0.99995537  =   0.99995503
 HV7372!UTM  18      -   0.99999966  x   0.99987792  =   0.99987758
 HV7372
 HV7372_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4977183225(NAD 83)
 HV7372
 HV7372                          SUPERSEDED SURVEY CONTROL
 HV7372
 HV7372  NAD 83(1991)-  38 41 05.62644(N)    076 43 37.94866(W) AD(       ) 2
 HV7372  NAD 83(1986)-  38 41 05.62454(N)    076 43 37.96390(W) AD(       ) 2
 HV7372  NAD 27      -  38 41 05.20209(N)    076 43 39.08205(W) AD(       ) 2
 HV7372  NGVD 29 (07/19/86)   35.7    (m)          117.     (f) VERT ANG       
 HV7372
 HV7372.Superseded values are not recommended for survey control.
 HV7372
 HV7372.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7372.See file dsdata.pdf to determine how the superseded data were derived.
 HV7372
 HV7372_MARKER: I = METAL ROD
 HV7372_SETTING: 0 = UNSPECIFIED SETTING
 HV7372_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7372
 HV7372  HISTORY     - Date     Condition        Report By
 HV7372  HISTORY     - 1969     MONUMENTED       WSSC
 HV7372
 HV7372                          STATION DESCRIPTION
 HV7372
 HV7372'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7372'THE STATION IS LOCATED ABOUT 1.8 MILES WEST OF THE PATUXENT RIVER,
 HV7372'.60 MILES NORTHWEST OF BALD EAGLE SCHOOL ROAD ON THE EAST SIDE OF
 HV7372'ROUTE 382.
 HV7372'
 HV7372'TO REACH THE STATION FROM THE INTERSECTION OF BALD EAGLE SCHOOL
 HV7372'ROAD, GO NORTHWEST ON ROUTE 382 FOR .65 MILES TO THE STATION ON
 HV7372'THE RIGHT.
 HV7372'
 HV7372'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7372'AND IS 5 INCHES BELOW THE SURFACE.  IT IS 13.7 FEET EAST OF THE
 HV7372'EAST EDGE OF ROUTE 382, 33.67 FEET SOUTH OF A NAIL IN A FENCE
 HV7372'POST, 21.05 FEET SOUTHWEST OF A NAIL IN A FENCE POST, 16.34 FEET
 HV7372'WEST OF A 14-INCH LOCUST, 59.48 FEET NORTHWEST OF THE NORTHEAST
 HV7372'CORNER OF A HOUSE, 38.92 FEET NORTH OF THE NORTH CORNER OF A
 HV7372'HOUSE, AND 54.21 FEET NORTHEAST OF THE NORTHWEST CORNER OF A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4763 ***********************************************************************
 HV4763  DESIGNATION -  17378 WSSC 1970
 HV4763  PID         -  HV4763
 HV4763  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4763  COUNTRY     -  US
 HV4763  USGS QUAD   -  ALEXANDRIA (2019)
 HV4763
 HV4763                         *CURRENT SURVEY CONTROL
 HV4763  ______________________________________________________________________
 HV4763* NAD 83(1993) POSITION- 38 45 47.01160(N) 077 00 19.69635(W)   ADJUSTED
 HV4763* NAVD 88 ORTHO HEIGHT -    42.4   (meters)      139.    (feet) VERTCON3
 HV4763  ______________________________________________________________________
 HV4763  GEOID HEIGHT    -        -32.369 (meters)                     GEOID18
 HV4763  LAPLACE CORR    -         -2.95  (seconds)                    DEFLEC18
 HV4763  HORZ ORDER      -  SECOND
 HV4763
 HV4763.The horizontal coordinates were established by classical geodetic methods
 HV4763.and adjusted by the National Geodetic Survey in November 1994.
 HV4763
 HV4763.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4763.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4763
 HV4763.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4763.GEOID18 height accuracy estimate available here.
 HV4763
 HV4763.Click photographs - Photos may exist for this station.
 HV4763
 HV4763.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4763
 HV4763. The following values were computed from the NAD 83(1993) position.
 HV4763
 HV4763;                    North         East     Units Scale Factor Converg.
 HV4763;SPC MD       -   121,703.914   399,524.495   MT  0.99995177   -0 00 12.4
 HV4763;SPC MD       -   399,290.26  1,310,773.28   sFT  0.99995177   -0 00 12.4
 HV4763;UTM  18      - 4,292,393.182   325,757.273   MT  0.99997387   -1 15 21.4
 HV4763
 HV4763!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4763!SPC MD       -   0.99999843  x   0.99995177  =   0.99995020
 HV4763!UTM  18      -   0.99999843  x   0.99997387  =   0.99997230
 HV4763
 HV4763:                Primary Azimuth Mark                     Grid Az
 HV4763:SPC MD       -  FRIENDLY                                 115 34 09.2
 HV4763:UTM  18      -  FRIENDLY                                 116 49 18.2
 HV4763
 HV4763_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2575792393(NAD 83)
 HV4763
 HV4763|---------------------------------------------------------------------|
 HV4763| PID    Reference Object                     Distance      Geod. Az  |
 HV4763|                                                           dddmmss.s |
 HV4763| HV7586 FRIENDLY                            APPROX. 2.6 KM 1153356.8 |
 HV4763| HV4762 17379 WSSC 1970                     142.734 METERS 17210     |
 HV4763|---------------------------------------------------------------------|
 HV4763
 HV4763                          SUPERSEDED SURVEY CONTROL
 HV4763
 HV4763  NAD 83(1991)-  38 45 47.01036(N)    077 00 19.69719(W) AD(       ) 2
 HV4763  NAD 83(1986)-  38 45 47.01020(N)    077 00 19.71012(W) AD(       ) 2
 HV4763  NAD 27      -  38 45 46.60020(N)    077 00 20.79658(W) AD(       ) 2
 HV4763  NGVD 29 (07/19/86)   42.6    (m)          140.     (f) VERT ANG       
 HV4763
 HV4763.Superseded values are not recommended for survey control.
 HV4763
 HV4763.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4763.See file dsdata.pdf to determine how the superseded data were derived.
 HV4763
 HV4763_MARKER: I = METAL ROD
 HV4763_SETTING: 0 = UNSPECIFIED SETTING
 HV4763_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4763
 HV4763  HISTORY     - Date     Condition        Report By
 HV4763  HISTORY     - 1969     MONUMENTED       WSSC
 HV4763
 HV4763                          STATION DESCRIPTION
 HV4763
 HV4763'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4763'THE STATION IS LOCATED EAST OF THE POTOMAC RIVER AND ABOUT 1.0
 HV4763'MILES SOUTH OF BROOKE MANOR ON THE WEST SIDE OF OXON HILL ROAD.
 HV4763'
 HV4763'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 210 (INDIAN
 HV4763'HEAD HIGHWAY) AND OXON HILL ROAD, GO NORTHWEST ON OXON HILL
 HV4763'ROAD FOR .80 MILES TO THE STATION ON THE LEFT.  (EAST OF
 HV4763'O. A. DELVIGNE FLORISTS).
 HV4763'
 HV4763'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4763'AND IS 1-INCH BELOW THE SURFACE.  IT IS 12.41 FEET SOUTH OF A
 HV4763'POLE, 73.73 FEET NORTH OF THE CENTERLINE OF A CONCRETE MONUMENT,
 HV4763'14.51 FEET NORTHWEST OF A FIRE HYDRANT, 15.7 FEET WEST OF THE
 HV4763'WEST EDGE OF OXON HILL ROAD, AND 57.42 FEET WEST OF PEPCO POLE
 HV4763'NO. 813772.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4762 ***********************************************************************
 HV4762  DESIGNATION -  17379 WSSC 1970
 HV4762  PID         -  HV4762
 HV4762  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4762  COUNTRY     -  US
 HV4762  USGS QUAD   -  ALEXANDRIA (2019)
 HV4762
 HV4762                         *CURRENT SURVEY CONTROL
 HV4762  ______________________________________________________________________
 HV4762* NAD 83(1993) POSITION- 38 45 42.42605(N) 077 00 18.89061(W)   ADJUSTED
 HV4762* NAVD 88 ORTHO HEIGHT -    35.7   (meters)      117.    (feet) VERTCON3
 HV4762  ______________________________________________________________________
 HV4762  GEOID HEIGHT    -        -32.372 (meters)                     GEOID18
 HV4762  LAPLACE CORR    -         -2.92  (seconds)                    DEFLEC18
 HV4762  HORZ ORDER      -  SECOND
 HV4762
 HV4762.The horizontal coordinates were established by classical geodetic methods
 HV4762.and adjusted by the National Geodetic Survey in November 1994.
 HV4762
 HV4762.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4762.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4762
 HV4762.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4762.GEOID18 height accuracy estimate available here.
 HV4762
 HV4762.Click photographs - Photos may exist for this station.
 HV4762
 HV4762.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4762
 HV4762. The following values were computed from the NAD 83(1993) position.
 HV4762
 HV4762;                    North         East     Units Scale Factor Converg.
 HV4762;SPC MD       -   121,562.518   399,543.939   MT  0.99995182   -0 00 11.9
 HV4762;SPC MD       -   398,826.36  1,310,837.07   sFT  0.99995182   -0 00 11.9
 HV4762;UTM  18      - 4,292,251.392   325,773.622   MT  0.99997380   -1 15 20.8
 HV4762
 HV4762!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4762!SPC MD       -   0.99999948  x   0.99995182  =   0.99995130
 HV4762!UTM  18      -   0.99999948  x   0.99997380  =   0.99997328
 HV4762
 HV4762_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2577392251(NAD 83)
 HV4762
 HV4762                          SUPERSEDED SURVEY CONTROL
 HV4762
 HV4762  NAD 83(1991)-  38 45 42.42481(N)    077 00 18.89144(W) AD(       ) 2
 HV4762  NAD 83(1986)-  38 45 42.42465(N)    077 00 18.90438(W) AD(       ) 2
 HV4762  NAD 27      -  38 45 42.01457(N)    077 00 19.99091(W) AD(       ) 2
 HV4762  NGVD 29 (07/19/86)   35.9    (m)          118.     (f) VERT ANG       
 HV4762
 HV4762.Superseded values are not recommended for survey control.
 HV4762
 HV4762.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4762.See file dsdata.pdf to determine how the superseded data were derived.
 HV4762
 HV4762_MARKER: B = BOLT
 HV4762_SETTING: 0 = UNSPECIFIED SETTING
 HV4762_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4762
 HV4762  HISTORY     - Date     Condition        Report By
 HV4762  HISTORY     - 1969     MONUMENTED       WSSC
 HV4762
 HV4762                          STATION DESCRIPTION
 HV4762
 HV4762'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4762'THE STATION IS LOCATED EAST OF THE POTOMAC RIVER AND IS
 HV4762'ABOUT 1.1 MILE SOUTH OF BROOKE MANOR ON THE SOUTH SIDE OF OXON
 HV4762'HILL ROAD, 400 FEET WEST OF FORT FOOTE ROAD.
 HV4762'
 HV4762'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 210 (INDIAN
 HV4762'HEAD HIGHWAY) AND OXON HILL ROAD, GO NORTHWEST ON OXON HILL
 HV4762'ROAD FOR .70 MILES TO THE STATION ON THE LEFT.
 HV4762'
 HV4762'THE STATION MARK IS A BRASS BOLT IN A CONCRETE SPILLWAY AND
 HV4762'IS 41.00 FEET SOUTHEAST OF A POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7451 ***********************************************************************
 HV7451  DESIGNATION -  17380 WSSC 1970
 HV7451  PID         -  HV7451
 HV7451  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7451  COUNTRY     -  US
 HV7451  USGS QUAD   -  PISCATAWAY (2016)
 HV7451
 HV7451                         *CURRENT SURVEY CONTROL
 HV7451  ______________________________________________________________________
 HV7451* NAD 83(1993) POSITION- 38 44 29.49751(N) 076 58 36.23807(W)   ADJUSTED
 HV7451* NAVD 88 ORTHO HEIGHT -    70.4   (meters)      231.    (feet) VERTCON3
 HV7451  ______________________________________________________________________
 HV7451  GEOID HEIGHT    -        -32.456 (meters)                     GEOID18
 HV7451  LAPLACE CORR    -         -3.28  (seconds)                    DEFLEC18
 HV7451  HORZ ORDER      -  SECOND
 HV7451
 HV7451.The horizontal coordinates were established by classical geodetic methods
 HV7451.and adjusted by the National Geodetic Survey in November 1994.
 HV7451
 HV7451.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7451.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7451
 HV7451.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7451.GEOID18 height accuracy estimate available here.
 HV7451
 HV7451.Click photographs - Photos may exist for this station.
 HV7451
 HV7451.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7451
 HV7451. The following values were computed from the NAD 83(1993) position.
 HV7451
 HV7451;                    North         East     Units Scale Factor Converg.
 HV7451;SPC MD       -   119,314.023   402,022.771   MT  0.99995258   +0 00 52.6
 HV7451;SPC MD       -   391,449.42  1,318,969.71   sFT  0.99995258   +0 00 52.6
 HV7451;UTM  18      - 4,289,949.224   328,202.764   MT  0.99996345   -1 14 14.5
 HV7451
 HV7451!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7451!SPC MD       -   0.99999405  x   0.99995258  =   0.99994663
 HV7451!UTM  18      -   0.99999405  x   0.99996345  =   0.99995750
 HV7451
 HV7451:                Primary Azimuth Mark                     Grid Az
 HV7451:SPC MD       -  FRIENDLY                                 352 24 49.1
 HV7451:UTM  18      -  FRIENDLY                                 353 39 56.2
 HV7451
 HV7451_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2820289949(NAD 83)
 HV7451
 HV7451|---------------------------------------------------------------------|
 HV7451| PID    Reference Object                     Distance      Geod. Az  |
 HV7451|                                                           dddmmss.s |
 HV7451| HV7450 17381 WSSC 1970                     220.483 METERS 11254     |
 HV7451| HV7586 FRIENDLY                            APPROX. 1.3 KM 3522541.7 |
 HV7451|---------------------------------------------------------------------|
 HV7451
 HV7451                          SUPERSEDED SURVEY CONTROL
 HV7451
 HV7451  NAD 83(1991)-  38 44 29.49638(N)    076 58 36.23878(W) AD(       ) 2
 HV7451  NAD 83(1986)-  38 44 29.49595(N)    076 58 36.25207(W) AD(       ) 2
 HV7451  NAD 27      -  38 44 29.08424(N)    076 58 37.34241(W) AD(       ) 2
 HV7451  NGVD 29 (07/19/86)   70.6    (m)          232.     (f) VERT ANG       
 HV7451
 HV7451.Superseded values are not recommended for survey control.
 HV7451
 HV7451.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7451.See file dsdata.pdf to determine how the superseded data were derived.
 HV7451
 HV7451_MARKER: I = METAL ROD
 HV7451_SETTING: 0 = UNSPECIFIED SETTING
 HV7451_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7451
 HV7451  HISTORY     - Date     Condition        Report By
 HV7451  HISTORY     - 1969     MONUMENTED       WSSC
 HV7451
 HV7451                          STATION DESCRIPTION
 HV7451
 HV7451'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7451'THE STATION IS LOCATED ABOUT 1.8 MILES SOUTH OF FORT WASHINGTON
 HV7451'FOREST AND WEST OF OLD FORT ROAD, AT THE NORTHWEST CORNER OF
 HV7451'THORNTON DRIVE AND SEVEN OAKS DRIVE.
 HV7451'
 HV7451'TO REACH THE STATION FROM OLD FORT ROAD, GO WEST ON THORNTON
 HV7451'DRIVE FOR .20 MILES TO THE STATION ON THE RIGHT.
 HV7451'
 HV7451'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7451'CENTER AND IS .2 FEET BELOW THE SURFACE.  IT IS 74.83 FEET
 HV7451'SOUTHEAST OF THE NORTHEAST CORNER OF HOUSE NO. 5222, 56.55
 HV7451'FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE SAME HOUSE, 55.40
 HV7451'FEET NORTHEAST OF C AND P POLE NO. 9144, 46.77 FEET WEST OF THE
 HV7451'SOUTHWEST CORNER OF AN ANGLE AND IRON OF A CATCH BASIN AND
 HV7451'89.81 FEET NORTHWEST OF THE NEAR CORNER OF A CATCH BASIN ON
 HV7451'THE SOUTH SIDE OF THORNTON DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7450 ***********************************************************************
 HV7450  DESIGNATION -  17381 WSSC 1970
 HV7450  PID         -  HV7450
 HV7450  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7450  COUNTRY     -  US
 HV7450  USGS QUAD   -  PISCATAWAY (2016)
 HV7450
 HV7450                         *CURRENT SURVEY CONTROL
 HV7450  ______________________________________________________________________
 HV7450* NAD 83(1993) POSITION- 38 44 26.71567(N) 076 58 27.82776(W)   ADJUSTED
 HV7450* NAVD 88 ORTHO HEIGHT -    71.5   (meters)      235.    (feet) VERTCON3
 HV7450  ______________________________________________________________________
 HV7450  GEOID HEIGHT    -        -32.462 (meters)                     GEOID18
 HV7450  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 HV7450  HORZ ORDER      -  SECOND
 HV7450
 HV7450.The horizontal coordinates were established by classical geodetic methods
 HV7450.and adjusted by the National Geodetic Survey in November 1994.
 HV7450
 HV7450.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7450.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7450
 HV7450.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7450.GEOID18 height accuracy estimate available here.
 HV7450
 HV7450.Click photographs - Photos may exist for this station.
 HV7450
 HV7450.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7450
 HV7450. The following values were computed from the NAD 83(1993) position.
 HV7450
 HV7450;                    North         East     Units Scale Factor Converg.
 HV7450;SPC MD       -   119,228.300   402,225.896   MT  0.99995261   +0 00 57.9
 HV7450;SPC MD       -   391,168.18  1,319,636.13   sFT  0.99995261   +0 00 57.9
 HV7450;UTM  18      - 4,289,859.083   328,403.969   MT  0.99996260   -1 14 09.1
 HV7450
 HV7450!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7450!SPC MD       -   0.99999388  x   0.99995261  =   0.99994649
 HV7450!UTM  18      -   0.99999388  x   0.99996260  =   0.99995648
 HV7450
 HV7450_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2840389859(NAD 83)
 HV7450
 HV7450                          SUPERSEDED SURVEY CONTROL
 HV7450
 HV7450  NAD 83(1991)-  38 44 26.71455(N)    076 58 27.82847(W) AD(       ) 2
 HV7450  NAD 83(1986)-  38 44 26.71411(N)    076 58 27.84177(W) AD(       ) 2
 HV7450  NAD 27      -  38 44 26.30231(N)    076 58 28.93239(W) AD(       ) 2
 HV7450  NGVD 29 (07/19/86)   71.7    (m)          235.     (f) VERT ANG       
 HV7450
 HV7450.Superseded values are not recommended for survey control.
 HV7450
 HV7450.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7450.See file dsdata.pdf to determine how the superseded data were derived.
 HV7450
 HV7450_MARKER: B = BOLT
 HV7450_SETTING: 0 = UNSPECIFIED SETTING
 HV7450_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7450
 HV7450  HISTORY     - Date     Condition        Report By
 HV7450  HISTORY     - 1969     MONUMENTED       WSSC
 HV7450
 HV7450                          STATION DESCRIPTION
 HV7450
 HV7450'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7450'THE STATION IS LOCATED ABOUT 1.8 MILES SOUTH OF FORT WASHINGTON
 HV7450'FOREST, 300 FEET WEST OF OLD FORT ROAD.
 HV7450'
 HV7450'TO REACH THE STATION FROM OLD FORT ROAD, GO WEST ON THORNTON
 HV7450'DRIVE FOR 300 FEET TO THE STATION ON THE RIGHT.  IT IS AT THE
 HV7450'NORTHEAST CORNER OF THORNTON DRIVE AND MAYFIELD DRIVE.
 HV7450'
 HV7450'THE STATION MARK IS A BRASS BOLT IN A CONCRETE SLAB SOUTHEAST
 HV7450'OF HOUSE NO. 8424.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7376 ***********************************************************************
 HV7376  DESIGNATION -  17382 WSSC 1970
 HV7376  PID         -  HV7376
 HV7376  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7376  COUNTRY     -  US
 HV7376  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7376
 HV7376                         *CURRENT SURVEY CONTROL
 HV7376  ______________________________________________________________________
 HV7376* NAD 83(1993) POSITION- 38 44 33.95498(N) 076 44 19.43496(W)   ADJUSTED
 HV7376* NAVD 88 ORTHO HEIGHT -    37.4   (meters)      123.    (feet) VERTCON3
 HV7376  ______________________________________________________________________
 HV7376  GEOID HEIGHT    -        -33.121 (meters)                     GEOID18
 HV7376  LAPLACE CORR    -         -5.52  (seconds)                    DEFLEC18
 HV7376  HORZ ORDER      -  SECOND
 HV7376
 HV7376.The horizontal coordinates were established by classical geodetic methods
 HV7376.and adjusted by the National Geodetic Survey in November 1994.
 HV7376
 HV7376.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7376.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7376
 HV7376.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7376.GEOID18 height accuracy estimate available here.
 HV7376
 HV7376.Click photographs - Photos may exist for this station.
 HV7376
 HV7376.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7376
 HV7376. The following values were computed from the NAD 83(1993) position.
 HV7376
 HV7376;                    North         East     Units Scale Factor Converg.
 HV7376;SPC MD       -   119,483.713   422,713.325   MT  0.99995253   +0 09 50.3
 HV7376;SPC MD       -   392,006.15  1,386,851.97   sFT  0.99995253   +0 09 50.3
 HV7376;UTM  18      - 4,289,666.747   348,891.441   MT  0.99988118   -1 05 18.1
 HV7376
 HV7376!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7376!SPC MD       -   0.99999932  x   0.99995253  =   0.99995185
 HV7376!UTM  18      -   0.99999932  x   0.99988118  =   0.99988050
 HV7376
 HV7376:                Primary Azimuth Mark                     Grid Az
 HV7376:SPC MD       -  FENNO                                    115 51 03.3
 HV7376:UTM  18      -  FENNO                                    117 06 11.7
 HV7376
 HV7376_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4889189666(NAD 83)
 HV7376
 HV7376|---------------------------------------------------------------------|
 HV7376| PID    Reference Object                     Distance      Geod. Az  |
 HV7376|                                                           dddmmss.s |
 HV7376| HV7362 FENNO                               APPROX. 2.6 KM 1160053.6 |
 HV7376| HV7375 17383 WSSC 1970                     217.379 METERS 11918     |
 HV7376|---------------------------------------------------------------------|
 HV7376
 HV7376                          SUPERSEDED SURVEY CONTROL
 HV7376
 HV7376  NAD 83(1991)-  38 44 33.95463(N)    076 44 19.43493(W) AD(       ) 2
 HV7376  NAD 83(1986)-  38 44 33.95204(N)    076 44 19.44975(W) AD(       ) 2
 HV7376  NAD 27      -  38 44 33.53573(N)    076 44 20.56335(W) AD(       ) 2
 HV7376  NGVD 29 (07/19/86)   37.7    (m)          124.     (f) VERT ANG       
 HV7376
 HV7376.Superseded values are not recommended for survey control.
 HV7376
 HV7376.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7376.See file dsdata.pdf to determine how the superseded data were derived.
 HV7376
 HV7376_MARKER: I = METAL ROD
 HV7376_SETTING: 0 = UNSPECIFIED SETTING
 HV7376_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7376
 HV7376  HISTORY     - Date     Condition        Report By
 HV7376  HISTORY     - 1969     MONUMENTED       WSSC
 HV7376
 HV7376                          STATION DESCRIPTION
 HV7376
 HV7376'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7376'THE STATION IS LOCATED ABOUT 3.0 MILES WEST OF THE PATUXENT RIVER,
 HV7376'.90 MILES NORTH OF MATTAPONI CREEK ON THE NORTH SIDE OF ST. THOMAS
 HV7376'CHURCH ROAD AND 1.3 MILES EAST OF ROUTE 382.
 HV7376'
 HV7376'TO REACH THE STATION FROM THE INTERSECTION OF MATTAPONI ROAD, GO
 HV7376'.35 MILES EAST ON ST. THOMAS CHURCH ROAD TO THE STATION ON THE
 HV7376'LEFT NEAR HOUSE NO. 3447.
 HV7376'
 HV7376'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7376'AND IS .6 FEET BELOW THE SURFACE.  IT IS 9.4 FEET NORTH OF THE
 HV7376'NORTH EDGE OF ST. THOMAS CHURCH ROAD, 5.94 FEET EAST OF PEPCO POLE
 HV7376'NO. 848856, 40.73 FEET NORTHEAST OF A 4-INCH LOCUST, 40.00 FEET
 HV7376'NORTH OF A 4-INCH LOCUST, 48.12 FEET NORTHWEST OF 4-INCH LOCUST,
 HV7376'68.16 FEET NORTHWEST OF A 4-INCH LOCUST, AND 90.13 FEET SOUTH OF A
 HV7376'POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7375 ***********************************************************************
 HV7375  DESIGNATION -  17383 WSSC 1970
 HV7375  PID         -  HV7375
 HV7375  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7375  COUNTRY     -  US
 HV7375  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7375
 HV7375                         *CURRENT SURVEY CONTROL
 HV7375  ______________________________________________________________________
 HV7375* NAD 83(1993) POSITION- 38 44 30.50477(N) 076 44 11.58551(W)   ADJUSTED
 HV7375* NAVD 88 ORTHO HEIGHT -    30.4   (meters)      100.    (feet) VERTCON3
 HV7375  ______________________________________________________________________
 HV7375  GEOID HEIGHT    -        -33.129 (meters)                     GEOID18
 HV7375  LAPLACE CORR    -         -5.44  (seconds)                    DEFLEC18
 HV7375  HORZ ORDER      -  SECOND
 HV7375
 HV7375.The horizontal coordinates were established by classical geodetic methods
 HV7375.and adjusted by the National Geodetic Survey in November 1994.
 HV7375
 HV7375.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7375.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7375
 HV7375.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7375.GEOID18 height accuracy estimate available here.
 HV7375
 HV7375.Click photographs - Photos may exist for this station.
 HV7375
 HV7375.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7375
 HV7375. The following values were computed from the NAD 83(1993) position.
 HV7375
 HV7375;                    North         East     Units Scale Factor Converg.
 HV7375;SPC MD       -   119,377.872   422,903.184   MT  0.99995257   +0 09 55.3
 HV7375;SPC MD       -   391,658.90  1,387,474.86   sFT  0.99995257   +0 09 55.3
 HV7375;UTM  18      - 4,289,556.789   349,078.929   MT  0.99988049   -1 05 13.1
 HV7375
 HV7375!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7375!SPC MD       -   1.00000042  x   0.99995257  =   0.99995299
 HV7375!UTM  18      -   1.00000042  x   0.99988049  =   0.99988091
 HV7375
 HV7375_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4907889556(NAD 83)
 HV7375
 HV7375                          SUPERSEDED SURVEY CONTROL
 HV7375
 HV7375  NAD 83(1991)-  38 44 30.50441(N)    076 44 11.58548(W) AD(       ) 2
 HV7375  NAD 83(1986)-  38 44 30.50181(N)    076 44 11.60031(W) AD(       ) 2
 HV7375  NAD 27      -  38 44 30.08539(N)    076 44 12.71419(W) AD(       ) 2
 HV7375  NGVD 29 (07/19/86)   30.7    (m)          101.     (f) VERT ANG       
 HV7375
 HV7375.Superseded values are not recommended for survey control.
 HV7375
 HV7375.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7375.See file dsdata.pdf to determine how the superseded data were derived.
 HV7375
 HV7375_MARKER: I = METAL ROD
 HV7375_SETTING: 0 = UNSPECIFIED SETTING
 HV7375_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7375
 HV7375  HISTORY     - Date     Condition        Report By
 HV7375  HISTORY     - 1969     MONUMENTED       WSSC
 HV7375
 HV7375                          STATION DESCRIPTION
 HV7375
 HV7375'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7375'*THE STATION IS LOCATED ABOUT 2.8 MILES WEST OF THE PATUXENT
 HV7375'RIVER, .90 MILES NORTH OF MATTAPONI CREEK ON THE NORTH SIDE OF ST.
 HV7375'THOMAS CHURCH ROAD AND 1.4 MILES EAST OF ROUTE 382.
 HV7375'
 HV7375'TO REACH THE STATION FROM THE INTERSECTION OF MATTAPONI ROAD, GO
 HV7375'.50 MILES EAST ON ST. THOMAS CHURCH ROAD TO THE STATION ON THE RIGHT.
 HV7375'
 HV7375'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7375'AND IS .4 FEET BELOW THE SURFACE.  IT IS 7.6 FEET SOUTH OF THE
 HV7375'SOUTH EDGE OF ST. THOMAS CHURCH ROAD, 78.24 FEET EAST OF A 6-INCH
 HV7375'LOCUST, 5.35 FEET WEST OF A 4-INCH LOCUST, AND 46.38 FEET
 HV7375'SOUTHEAST OF A PROPERTY CORNER ON THE NORTH SIDE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7446 ***********************************************************************
 HV7446  DESIGNATION -  17384 WSSC 1970
 HV7446  PID         -  HV7446
 HV7446  STATE/COUNTY-  MD/CHARLES
 HV7446  COUNTRY     -  US
 HV7446  USGS QUAD   -  PISCATAWAY (2016)
 HV7446
 HV7446                         *CURRENT SURVEY CONTROL
 HV7446  ______________________________________________________________________
 HV7446* NAD 83(1993) POSITION- 38 38 48.13678(N) 076 56 14.64416(W)   ADJUSTED
 HV7446* NAVD 88 ORTHO HEIGHT -    66.2   (meters)      217.    (feet) VERTCON3
 HV7446  ______________________________________________________________________
 HV7446  GEOID HEIGHT    -        -32.777 (meters)                     GEOID18
 HV7446  LAPLACE CORR    -         -5.32  (seconds)                    DEFLEC18
 HV7446  HORZ ORDER      -  SECOND
 HV7446
 HV7446.The horizontal coordinates were established by classical geodetic methods
 HV7446.and adjusted by the National Geodetic Survey in November 1994.
 HV7446
 HV7446.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7446.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7446
 HV7446.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7446.GEOID18 height accuracy estimate available here.
 HV7446
 HV7446.Click photographs - Photos may exist for this station.
 HV7446
 HV7446.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7446
 HV7446. The following values were computed from the NAD 83(1993) position.
 HV7446
 HV7446;                    North         East     Units Scale Factor Converg.
 HV7446;SPC MD       -   108,789.903   405,449.346   MT  0.99995780   +0 02 21.4
 HV7446;SPC MD       -   356,921.54  1,330,211.73   sFT  0.99995780   +0 02 21.4
 HV7446;UTM  18      - 4,279,352.799   331,398.812   MT  0.99995006   -1 12 36.8
 HV7446
 HV7446!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7446!SPC MD       -   0.99999476  x   0.99995780  =   0.99995256
 HV7446!UTM  18      -   0.99999476  x   0.99995006  =   0.99994482
 HV7446
 HV7446:                Primary Azimuth Mark                     Grid Az
 HV7446:SPC MD       -  GREEN                                    049 36 07.9
 HV7446:UTM  18      -  GREEN                                    050 51 06.1
 HV7446
 HV7446_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3139879352(NAD 83)
 HV7446
 HV7446|---------------------------------------------------------------------|
 HV7446| PID    Reference Object                     Distance      Geod. Az  |
 HV7446|                                                           dddmmss.s |
 HV7446| HV7430 GREEN                               APPROX. 2.2 KM 0493829.3 |
 HV7446| HV7447 17385 WSSC 1970                     292.026 METERS 30656     |
 HV7446|---------------------------------------------------------------------|
 HV7446
 HV7446                          SUPERSEDED SURVEY CONTROL
 HV7446
 HV7446  NAD 83(1991)-  38 38 48.13625(N)    076 56 14.64425(W) AD(       ) 2
 HV7446  NAD 83(1986)-  38 38 48.13582(N)    076 56 14.65916(W) AD(       ) 2
 HV7446  NAD 27      -  38 38 47.71702(N)    076 56 15.75620(W) AD(       ) 2
 HV7446  NGVD 29 (07/19/86)   66.4    (m)          218.     (f) VERT ANG       
 HV7446
 HV7446.Superseded values are not recommended for survey control.
 HV7446
 HV7446.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7446.See file dsdata.pdf to determine how the superseded data were derived.
 HV7446
 HV7446_MARKER: I = METAL ROD
 HV7446_SETTING: 0 = UNSPECIFIED SETTING
 HV7446_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7446
 HV7446  HISTORY     - Date     Condition        Report By
 HV7446  HISTORY     - 1969     MONUMENTED       WSSC
 HV7446
 HV7446                          STATION DESCRIPTION
 HV7446
 HV7446'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7446'*THE STATION IS LOCATED ON THE SOUTH SIDE OF ROUTE 228 (BERRY
 HV7446'ROAD) ABOUT .50 MILES SOUTH OF MATTAWOMAN CREEK AND ABOUT 2.0
 HV7446'MILES NORTHWEST OF ROUTE 301 (ROBERT CRAIN HIGHWAY).
 HV7446'
 HV7446'TO REACH THE STATION FROM ROUTE 301, GO 2.0 MILES NORTHWEST
 HV7446'ON ROUTE 228 TO THE STATION ON THE LEFT.
 HV7446'
 HV7446'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7446'AND IS SET FLUSH WITH THE SURFACE.  IT IS 15.0 FEET SOUTH OF THE
 HV7446'SOUTH EDGE OF ROUTE 228, 53.52 FEET NORTHEAST OF THE NORTHEAST
 HV7446'CORNER OF THE PORCH ON HOUSE NO. 248, 44.79 FEET NORTHEAST OF
 HV7446'THE NORTHEAST CORNER OF A PORCH, 55.40 FEET NORTH OF THE
 HV7446'NORTHEAST CORNER OF A CONCRETE WALK, AND 11.11 FEET WEST OF
 HV7446'C AND P POLE NO. 49.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7447 ***********************************************************************
 HV7447  DESIGNATION -  17385 WSSC 1970
 HV7447  PID         -  HV7447
 HV7447  STATE/COUNTY-  MD/CHARLES
 HV7447  COUNTRY     -  US
 HV7447  USGS QUAD   -  PISCATAWAY (2016)
 HV7447
 HV7447                         *CURRENT SURVEY CONTROL
 HV7447  ______________________________________________________________________
 HV7447* NAD 83(1993) POSITION- 38 38 53.82756(N) 076 56 24.29698(W)   ADJUSTED
 HV7447* NAVD 88 ORTHO HEIGHT -    66.6   (meters)      219.    (feet) VERTCON3
 HV7447  ______________________________________________________________________
 HV7447  GEOID HEIGHT    -        -32.765 (meters)                     GEOID18
 HV7447  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 HV7447  HORZ ORDER      -  SECOND
 HV7447
 HV7447.The horizontal coordinates were established by classical geodetic methods
 HV7447.and adjusted by the National Geodetic Survey in November 1994.
 HV7447
 HV7447.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7447.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7447
 HV7447.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7447.GEOID18 height accuracy estimate available here.
 HV7447
 HV7447.Click photographs - Photos may exist for this station.
 HV7447
 HV7447.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7447
 HV7447. The following values were computed from the NAD 83(1993) position.
 HV7447
 HV7447;                    North         East     Units Scale Factor Converg.
 HV7447;SPC MD       -   108,965.218   405,215.815   MT  0.99995769   +0 02 15.4
 HV7447;SPC MD       -   357,496.72  1,329,445.55   sFT  0.99995769   +0 02 15.4
 HV7447;UTM  18      - 4,279,533.164   331,169.161   MT  0.99995102   -1 12 43.0
 HV7447
 HV7447!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7447!SPC MD       -   0.99999470  x   0.99995769  =   0.99995239
 HV7447!UTM  18      -   0.99999470  x   0.99995102  =   0.99994572
 HV7447
 HV7447_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3116979533(NAD 83)
 HV7447
 HV7447                          SUPERSEDED SURVEY CONTROL
 HV7447
 HV7447  NAD 83(1991)-  38 38 53.82702(N)    076 56 24.29709(W) AD(       ) 2
 HV7447  NAD 83(1986)-  38 38 53.82661(N)    076 56 24.31198(W) AD(       ) 2
 HV7447  NAD 27      -  38 38 53.40795(N)    076 56 25.40867(W) AD(       ) 2
 HV7447  NGVD 29 (07/19/86)   66.8    (m)          219.     (f) VERT ANG       
 HV7447
 HV7447.Superseded values are not recommended for survey control.
 HV7447
 HV7447.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7447.See file dsdata.pdf to determine how the superseded data were derived.
 HV7447
 HV7447_MARKER: B = BOLT
 HV7447_SETTING: 0 = UNSPECIFIED SETTING
 HV7447_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7447
 HV7447  HISTORY     - Date     Condition        Report By
 HV7447  HISTORY     - 1969     MONUMENTED       WSSC
 HV7447
 HV7447                          STATION DESCRIPTION
 HV7447
 HV7447'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7447'THE STATION IS LOCATED ON THE NORTH SIDE OF ROUTE 228 (BERRY
 HV7447'ROAD) ABOUT .50 MILES SOUTH OF MATTAWOMAN CREEK AND ABOUT 2.2
 HV7447'MILES NORTHWEST OF ROUTE 301 (ROBERT CRAIN HIGHWAY) AT THE
 HV7447'NORTHEAST CORNER OF THE ENTRANCE TO WESTWOOD ESTATES.
 HV7447'
 HV7447'TO REACH THE STATION FROM ROUTE 301, GO 2.2 MILES NORTHWEST
 HV7447'ON ROUTE 228 TO THE STATION ON THE RIGHT.
 HV7447'
 HV7447'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CURB AT THE
 HV7447'4TH SEAM IN THE CURB FROM THE EAST END.  IT IS 21.5 FEET
 HV7447'SOUTHWEST OF THE FACE OF CABLE MARKER NO. 54 AND 35.0 FEET
 HV7447'NORTHWEST OF THE SOUTH END OF THE CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7444 ***********************************************************************
 HV7444  DESIGNATION -  17386 WSSC 1970
 HV7444  PID         -  HV7444
 HV7444  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7444  COUNTRY     -  US
 HV7444  USGS QUAD   -  PISCATAWAY (2016)
 HV7444
 HV7444                         *CURRENT SURVEY CONTROL
 HV7444  ______________________________________________________________________
 HV7444* NAD 83(1993) POSITION- 38 39 49.21537(N) 076 55 32.17261(W)   ADJUSTED
 HV7444* NAVD 88 ORTHO HEIGHT -    64.5   (meters)      212.    (feet) VERTCON3
 HV7444  ______________________________________________________________________
 HV7444  GEOID HEIGHT    -        -32.762 (meters)                     GEOID18
 HV7444  LAPLACE CORR    -         -5.34  (seconds)                    DEFLEC18
 HV7444  HORZ ORDER      -  SECOND
 HV7444
 HV7444.The horizontal coordinates were established by classical geodetic methods
 HV7444.and adjusted by the National Geodetic Survey in November 1994.
 HV7444
 HV7444.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7444.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7444
 HV7444.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7444.GEOID18 height accuracy estimate available here.
 HV7444
 HV7444.Click photographs - Photos may exist for this station.
 HV7444
 HV7444.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7444
 HV7444. The following values were computed from the NAD 83(1993) position.
 HV7444
 HV7444;                    North         East     Units Scale Factor Converg.
 HV7444;SPC MD       -   110,674.000   406,474.819   MT  0.99995667   +0 02 48.1
 HV7444;SPC MD       -   363,102.95  1,333,576.14   sFT  0.99995667   +0 02 48.1
 HV7444;UTM  18      - 4,281,214.065   332,465.124   MT  0.99994565   -1 12 11.9
 HV7444
 HV7444!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7444!SPC MD       -   0.99999502  x   0.99995667  =   0.99995170
 HV7444!UTM  18      -   0.99999502  x   0.99994565  =   0.99994068
 HV7444
 HV7444_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3246581214(NAD 83)
 HV7444
 HV7444                          SUPERSEDED SURVEY CONTROL
 HV7444
 HV7444  NAD 83(1991)-  38 39 49.21493(N)    076 55 32.17292(W) AD(       ) 2
 HV7444  NAD 83(1986)-  38 39 49.21439(N)    076 55 32.18757(W) AD(       ) 2
 HV7444  NAD 27      -  38 39 48.79633(N)    076 55 33.28545(W) AD(       ) 2
 HV7444  NGVD 29 (07/19/86)   64.7    (m)          212.     (f) VERT ANG       
 HV7444
 HV7444.Superseded values are not recommended for survey control.
 HV7444
 HV7444.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7444.See file dsdata.pdf to determine how the superseded data were derived.
 HV7444
 HV7444_MARKER: I = METAL ROD
 HV7444_SETTING: 0 = UNSPECIFIED SETTING
 HV7444_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7444
 HV7444  HISTORY     - Date     Condition        Report By
 HV7444  HISTORY     - 1969     MONUMENTED       WSSC
 HV7444
 HV7444                          STATION DESCRIPTION
 HV7444
 HV7444'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7444'THE STATION IS LOCATED .70 MILES NORTHEAST OF MATTAWOMAN
 HV7444'CREEK, 2.2 MILES NORTHWEST OF ROUTE 301 (ROBERT CRAIN HIGHWAY)
 HV7444'ON THE NORTH SIDE OF GARDNER ROAD.
 HV7444'
 HV7444'TO REACH THE STATION FROM ROUTE 373 (TB-ACCOKEEK ROAD), GO
 HV7444'1.45 MILES SOUTHEAST ON GARDNER ROAD TO THE STATION ON THE LEFT.
 HV7444'
 HV7444'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7444'CENTER AND IS SET FLUSH WITH THE SURFACE.  IT IS 64.77 FEET
 HV7444'NORTHEAST OF C AND P POLE NO. 1, 46.32 FEET NORTHWEST OF C AND
 HV7444'P POLE NO. 51, 49.56 FEET WEST OF A 14-INCH OAK, AND 51.58 FEET
 HV7444'SOUTHWEST OF AN 18-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7410 ***********************************************************************
 HV7410  DESIGNATION -  17387 WSSC 1970
 HV7410  PID         -  HV7410
 HV7410  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7410  COUNTRY     -  US
 HV7410  USGS QUAD   -  BRANDYWINE (2016)
 HV7410
 HV7410                         *CURRENT SURVEY CONTROL
 HV7410  ______________________________________________________________________
 HV7410* NAD 83(1993) POSITION- 38 41 45.28013(N) 076 49 13.73577(W)   ADJUSTED
 HV7410* NAVD 88 ORTHO HEIGHT -    66.4   (meters)      218.    (feet) VERTCON3
 HV7410  ______________________________________________________________________
 HV7410  GEOID HEIGHT    -        -32.989 (meters)                     GEOID18
 HV7410  LAPLACE CORR    -         -6.04  (seconds)                    DEFLEC18
 HV7410  HORZ ORDER      -  SECOND
 HV7410
 HV7410.The horizontal coordinates were established by classical geodetic methods
 HV7410.and adjusted by the National Geodetic Survey in November 1994.
 HV7410
 HV7410.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7410.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7410
 HV7410.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7410.GEOID18 height accuracy estimate available here.
 HV7410
 HV7410.Click photographs - Photos may exist for this station.
 HV7410
 HV7410.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7410
 HV7410. The following values were computed from the NAD 83(1993) position.
 HV7410
 HV7410;                    North         East     Units Scale Factor Converg.
 HV7410;SPC MD       -   114,265.524   415,616.612   MT  0.99995475   +0 06 45.6
 HV7410;SPC MD       -   374,886.14  1,363,568.83   sFT  0.99995475   +0 06 45.6
 HV7410;UTM  18      - 4,284,605.124   341,682.857   MT  0.99990866   -1 08 18.2
 HV7410
 HV7410!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7410!SPC MD       -   0.99999476  x   0.99995475  =   0.99994951
 HV7410!UTM  18      -   0.99999476  x   0.99990866  =   0.99990342
 HV7410
 HV7410:                Primary Azimuth Mark                     Grid Az
 HV7410:SPC MD       -  GIBBONS                                  150 08 22.2
 HV7410:UTM  18      -  GIBBONS                                  151 23 26.0
 HV7410
 HV7410_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4168284605(NAD 83)
 HV7410
 HV7410|---------------------------------------------------------------------|
 HV7410| PID    Reference Object                     Distance      Geod. Az  |
 HV7410|                                                           dddmmss.s |
 HV7410| HV7409 17388 WSSC 1970                     268.080 METERS 08217     |
 HV7410| HV7388 GIBBONS                             APPROX. 1.2 KM 1501507.8 |
 HV7410|---------------------------------------------------------------------|
 HV7410
 HV7410                          SUPERSEDED SURVEY CONTROL
 HV7410
 HV7410  NAD 83(1991)-  38 41 45.27986(N)    076 49 13.73599(W) AD(       ) 2
 HV7410  NAD 83(1986)-  38 41 45.27822(N)    076 49 13.75091(W) AD(       ) 2
 HV7410  NAD 27      -  38 41 44.85967(N)    076 49 14.85923(W) AD(       ) 2
 HV7410  NGVD 29 (07/19/86)   66.6    (m)          219.     (f) VERT ANG       
 HV7410
 HV7410.Superseded values are not recommended for survey control.
 HV7410
 HV7410.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7410.See file dsdata.pdf to determine how the superseded data were derived.
 HV7410
 HV7410_MARKER: I = METAL ROD
 HV7410_SETTING: 0 = UNSPECIFIED SETTING
 HV7410_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7410
 HV7410  HISTORY     - Date     Condition        Report By
 HV7410  HISTORY     - 1969     MONUMENTED       WSSC
 HV7410
 HV7410                          STATION DESCRIPTION
 HV7410
 HV7410'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7410'THE STATION IS LOCATED ABOUT 1.5 MILES EAST OF BRANDYWINE ON
 HV7410'THE SOUTH SIDE OF BRANDYWINE-NORTH KEYS ROAD, .65 MILES WEST
 HV7410'OF GIBBONS CHURCH ROAD AND .6 MILES EAST OF ROUTE 381.
 HV7410'
 HV7410'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 381, GO
 HV7410'EAST ON BRANDYWINE-NORTH KEYS ROAD FOR .60 MILES TO THE
 HV7410'STATION ON THE RIGHT.
 HV7410'
 HV7410'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7410'CENTER AND IS .6 FEET BELOW THE SURFACE.  IT IS 46.01 FEET
 HV7410'WEST OF POLE NO. 1, 93.44 FEET EAST OF A POLE, 49.44 FEET
 HV7410'SOUTHEAST OF A 24-INCH OAK, 34.51 FEET SOUTH OF A 8-INCH
 HV7410'HICKORY, AND 41.23 FEET SOUTHWEST OF A 20-INCH BLACK OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7409 ***********************************************************************
 HV7409  DESIGNATION -  17388 WSSC 1970
 HV7409  PID         -  HV7409
 HV7409  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7409  COUNTRY     -  US
 HV7409  USGS QUAD   -  BRANDYWINE (2016)
 HV7409
 HV7409                         *CURRENT SURVEY CONTROL
 HV7409  ______________________________________________________________________
 HV7409* NAD 83(1993) POSITION- 38 41 46.44655(N) 076 49 02.74255(W)   ADJUSTED
 HV7409* NAVD 88 ORTHO HEIGHT -    64.8   (meters)      213.    (feet) VERTCON3
 HV7409  ______________________________________________________________________
 HV7409  GEOID HEIGHT    -        -32.998 (meters)                     GEOID18
 HV7409  LAPLACE CORR    -         -6.04  (seconds)                    DEFLEC18
 HV7409  HORZ ORDER      -  SECOND
 HV7409
 HV7409.The horizontal coordinates were established by classical geodetic methods
 HV7409.and adjusted by the National Geodetic Survey in November 1994.
 HV7409
 HV7409.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7409.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7409
 HV7409.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7409.GEOID18 height accuracy estimate available here.
 HV7409
 HV7409.Click photographs - Photos may exist for this station.
 HV7409
 HV7409.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7409
 HV7409. The following values were computed from the NAD 83(1993) position.
 HV7409
 HV7409;                    North         East     Units Scale Factor Converg.
 HV7409;SPC MD       -   114,302.017   415,882.185   MT  0.99995473   +0 06 52.5
 HV7409;SPC MD       -   375,005.87  1,364,440.14   sFT  0.99995473   +0 06 52.5
 HV7409;UTM  18      - 4,284,635.809   341,949.151   MT  0.99990762   -1 08 11.3
 HV7409
 HV7409!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7409!SPC MD       -   0.99999502  x   0.99995473  =   0.99994975
 HV7409!UTM  18      -   0.99999502  x   0.99990762  =   0.99990264
 HV7409
 HV7409_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4194984635(NAD 83)
 HV7409
 HV7409                          SUPERSEDED SURVEY CONTROL
 HV7409
 HV7409  NAD 83(1991)-  38 41 46.44627(N)    076 49 02.74278(W) AD(       ) 2
 HV7409  NAD 83(1986)-  38 41 46.44462(N)    076 49 02.75769(W) AD(       ) 2
 HV7409  NAD 27      -  38 41 46.02600(N)    076 49 03.86634(W) AD(       ) 2
 HV7409  NGVD 29 (07/19/86)   65.0    (m)          213.     (f) VERT ANG       
 HV7409
 HV7409.Superseded values are not recommended for survey control.
 HV7409
 HV7409.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7409.See file dsdata.pdf to determine how the superseded data were derived.
 HV7409
 HV7409_MARKER: I = METAL ROD
 HV7409_SETTING: 0 = UNSPECIFIED SETTING
 HV7409_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7409
 HV7409  HISTORY     - Date     Condition        Report By
 HV7409  HISTORY     - 1969     MONUMENTED       WSSC
 HV7409
 HV7409                          STATION DESCRIPTION
 HV7409
 HV7409'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7409'THE STATION IS LOCATED ABOUT 1.5 MILES EAST OF BRANDYWINE ON
 HV7409'THE SOUTH SIDE OF BRANDYWINE-NORTH KEYS ROAD, .50 MILES WEST
 HV7409'OF GIBBONS CHURCH ROAD AND .8 MILES EAST OF ROUTE 381.
 HV7409'
 HV7409'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 381, GO
 HV7409'EAST ON BRANDYWINE-NORTH KEYS ROAD FOR .80 MILES TO THE
 HV7409'STATION ON THE LEFT.
 HV7409'
 HV7409'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7409'CENTER AND IS .3 FEET BELOW THE SURFACE.  IT IS 13.04 FEET
 HV7409'WEST OF C AND P POLE NO. 15 ON THE NORTH SIDE OF THE ROAD,
 HV7409'37.85 FEET NORTHWEST OF C AND P POLE NO. 15 ON THE SOUTH SIDE
 HV7409'OF THE ROAD, 8.3 FEET NORTH OF THE NORTH EDGE OF A MACADAM ROAD,
 HV7409'22.08 FEET SOUTHWEST OF AN 18-INCH OAK, AND 44.08 FEET EAST
 HV7409'OF A POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7484 ***********************************************************************
 HV7484  DESIGNATION -  17389 WSSC 1970
 HV7484  PID         -  HV7484
 HV7484  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7484  COUNTRY     -  US
 HV7484  USGS QUAD   -  LANHAM (2016)
 HV7484
 HV7484                         *CURRENT SURVEY CONTROL
 HV7484  ______________________________________________________________________
 HV7484* NAD 83(1991) POSITION- 38 58 41.87335(N) 076 48 04.85357(W)   ADJUSTED
 HV7484* NAVD 88 ORTHO HEIGHT -    53.3   (meters)      175.    (feet) VERTCON3
 HV7484  ______________________________________________________________________
 HV7484  GEOID HEIGHT    -        -32.501 (meters)                     GEOID18
 HV7484  LAPLACE CORR    -         -5.53  (seconds)                    DEFLEC18
 HV7484  HORZ ORDER      -  SECOND
 HV7484
 HV7484.The horizontal coordinates were established by classical geodetic methods
 HV7484.and adjusted by the National Geodetic Survey in January 1992.
 HV7484
 HV7484.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7484.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7484
 HV7484.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7484.GEOID18 height accuracy estimate available here.
 HV7484
 HV7484.Click photographs - Photos may exist for this station.
 HV7484
 HV7484.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7484
 HV7484. The following values were computed from the NAD 83(1991) position.
 HV7484
 HV7484;                    North         East     Units Scale Factor Converg.
 HV7484;SPC MD       -   145,615.816   417,212.896   MT  0.99995144   +0 07 28.9
 HV7484;SPC MD       -   477,741.22  1,368,805.98   sFT  0.99995144   +0 07 28.9
 HV7484;UTM  18      - 4,315,911.485   343,965.039   MT  0.99989980   -1 07 60.0
 HV7484
 HV7484!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7484!SPC MD       -   0.99999674  x   0.99995144  =   0.99994818
 HV7484!UTM  18      -   0.99999674  x   0.99989980  =   0.99989654
 HV7484
 HV7484:                Primary Azimuth Mark                     Grid Az
 HV7484:SPC MD       -  HILLMEADE                                115 40 12.9
 HV7484:UTM  18      -  HILLMEADE                                116 55 41.8
 HV7484
 HV7484_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4396515911(NAD 83)
 HV7484
 HV7484|---------------------------------------------------------------------|
 HV7484| PID    Reference Object                     Distance      Geod. Az  |
 HV7484|                                                           dddmmss.s |
 HV7484| HV7463 HILLMEADE                           APPROX. 1.5 KM 1154741.8 |
 HV7484| HV7485 17390 WSSC 1970                     376.210 METERS 26623     |
 HV7484|---------------------------------------------------------------------|
 HV7484
 HV7484                          SUPERSEDED SURVEY CONTROL
 HV7484
 HV7484  NAD 83(1986)-  38 58 41.87126(N)    076 48 04.86486(W) AD(       ) 2
 HV7484  NAD 27      -  38 58 41.47354(N)    076 48 05.97183(W) AD(       ) 2
 HV7484  NGVD 29 (07/19/86)   53.5    (m)          176.     (f) VERT ANG       
 HV7484
 HV7484.Superseded values are not recommended for survey control.
 HV7484
 HV7484.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7484.See file dsdata.pdf to determine how the superseded data were derived.
 HV7484
 HV7484_MARKER: I = METAL ROD
 HV7484_SETTING: 0 = UNSPECIFIED SETTING
 HV7484_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7484
 HV7484  HISTORY     - Date     Condition        Report By
 HV7484  HISTORY     - 1969     MONUMENTED       WSSC
 HV7484  HISTORY     - 19960911 MARK NOT FOUND   USPSQD
 HV7484
 HV7484                          STATION DESCRIPTION
 HV7484
 HV7484'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7484'THE STATION IS LOCATED ON THE SOUTH SIDE OF DAISEY LANE, .5
 HV7484'MILES EAST OF ROUTE 193 (GLENN DALE ROAD) ABOUT 1.0 MILE
 HV7484'SOUTHEAST OF GLENN DALE, AND 1.60 MILES SOUTHWEST OF HIGH
 HV7484'BRIDGE.
 HV7484'
 HV7484'TO REACH THE STATION FROM ROUTE 193, GO EAST ON DAISEY LANE
 HV7484'FOR .50 MILES TO THE STATION ON THE RIGHT.
 HV7484'
 HV7484'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7484'CENTER AND IS .6 FEET BELOW THE SURFACE.  IT IS 4.6 FEET SOUTH OF
 HV7484'THE SOUTH EDGE OF DAISEY LANE, 22.40 FEET SOUTH OF C AND P
 HV7484'POLE NO. 7, 63.33 FEET EAST OF C AND P POLE NO. 12518, 28.97
 HV7484'FEET NORTH OF THE FACE OF A 12-INCH MAPLE, AND 70.09 FEET NORTH
 HV7484'OF THE NORTHEAST CORNER OF A HOUSE (DAISY BROTHERS CONSTRUCTION
 HV7484'COMPANY).
 HV7484
 HV7484                          STATION RECOVERY (1996)
 HV7484
 HV7484'RECOVERY NOTE BY US POWER SQUADRON 1996
 HV7484'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1245 ***********************************************************************
 HV1245  DESIGNATION -  1739 WSSC
 HV1245  PID         -  HV1245
 HV1245  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1245  COUNTRY     -  US
 HV1245  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1245
 HV1245                         *CURRENT SURVEY CONTROL
 HV1245  ______________________________________________________________________
 HV1245* NAD 83(1986) POSITION- 38 53 06.     (N) 076 54 51.     (W)   SCALED
 HV1245* NAVD 88 ORTHO HEIGHT -    35.188 (meters)      115.45  (feet) ADJUSTED
 HV1245  ______________________________________________________________________
 HV1245  GEOID HEIGHT    -        -32.329 (meters)                     GEOID18
 HV1245  DYNAMIC HEIGHT  -         35.168 (meters)      115.38  (feet) COMP
 HV1245  MODELED GRAVITY -    980,080.2   (mgal)                       NAVD 88
 HV1245
 HV1245  VERT ORDER      -  FIRST     CLASS II
 HV1245
 HV1245.The horizontal coordinates were scaled from a map and have
 HV1245.an estimated accuracy of +/- 6 seconds.
 HV1245
 HV1245.The orthometric height was determined by differential leveling and
 HV1245.adjusted by the NATIONAL GEODETIC SURVEY
 HV1245.in June 1991.
 HV1245
 HV1245.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1245.GEOID18 height accuracy estimate available here.
 HV1245
 HV1245.Click photographs - Photos may exist for this station.
 HV1245
 HV1245.The dynamic height is computed by dividing the NAVD 88
 HV1245.geopotential number by the normal gravity value computed on the
 HV1245.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1245.degrees latitude (g = 980.6199 gals.).
 HV1245
 HV1245.The modeled gravity was interpolated from observed gravity values.
 HV1245
 HV1245;                    North         East    Units  Estimated Accuracy
 HV1245;SPC MD       -   135,240.      407,450.      MT  (+/- 180 meters Scaled)
 HV1245
 HV1245_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ339057(NAD 83)
 HV1245
 HV1245                          SUPERSEDED SURVEY CONTROL
 HV1245
 HV1245  NGVD 29 (11/26/84)   35.422  (m)          116.21   (f) ADJUSTED    1 2
 HV1245
 HV1245.Superseded values are not recommended for survey control.
 HV1245
 HV1245.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1245.See file dsdata.pdf to determine how the superseded data were derived.
 HV1245
 HV1245_MARKER: DD = SURVEY DISK
 HV1245_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1245_STAMPING: 1739
 HV1245_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1245
 HV1245  HISTORY     - Date     Condition        Report By
 HV1245  HISTORY     - UNK      MONUMENTED       WSSC
 HV1245  HISTORY     - 1929     GOOD             CGS
 HV1245  HISTORY     - 1952     GOOD             CGS
 HV1245
 HV1245                          STATION DESCRIPTION
 HV1245
 HV1245'DESCRIBED BY COAST AND GEODETIC SURVEY 1929
 HV1245'AT CAPITOL HEIGHTS.
 HV1245'AT CAPITOL HEIGHTS, PRINCE GEORGES COUNTY, ON THE WEST SIDE OF
 HV1245'SIXTY-FIRST STREET, 50 YARDS NORTH OF CENTRAL AVENUE, AT THE
 HV1245'NEW (1952) BRICK BAPTIST CHURCH, IN THE NORTHEAST CORNER OF THE
 HV1245'LAWN, 14.2 FEET FROM THE NEAR CORNER OF THE CHURCH (UNDER THE
 HV1245'CORNER STONE MARKED 1910 1952), 15.1 FEET FROM THE NEAR CORNER
 HV1245'OF THE WHITE FRAME HOUSE NORTH OF THE CHURCH, 5.9 FEET WEST OF
 HV1245'THE WEST EDGE OF THE CONCRETE SIDEWALK, 5.6 FEET SOUTH OF THE
 HV1245'NORTH FACE OF A RETAINING WALL UNDER A STEEL FENCE, AND 4
 HV1245'INCHES UNDER GROUND.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV1245'STANDARD DISK, STAMPED 1739 AND FASTENED TO THE TOP OF AN IRON
 HV1245'PIPE.
 HV1245
 HV1245                          STATION RECOVERY (1952)
 HV1245
 HV1245'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 HV1245'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7485 ***********************************************************************
 HV7485  DESIGNATION -  17390 WSSC 1970
 HV7485  PID         -  HV7485
 HV7485  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7485  COUNTRY     -  US
 HV7485  USGS QUAD   -  LANHAM (2016)
 HV7485
 HV7485                         *CURRENT SURVEY CONTROL
 HV7485  ______________________________________________________________________
 HV7485* NAD 83(1991) POSITION- 38 58 41.10380(N) 076 48 20.45208(W)   ADJUSTED
 HV7485* NAVD 88 ORTHO HEIGHT -    59.5   (meters)      195.    (feet) VERTCON3
 HV7485  ______________________________________________________________________
 HV7485  GEOID HEIGHT    -        -32.489 (meters)                     GEOID18
 HV7485  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV7485  HORZ ORDER      -  SECOND
 HV7485
 HV7485.The horizontal coordinates were established by classical geodetic methods
 HV7485.and adjusted by the National Geodetic Survey in January 1992.
 HV7485
 HV7485.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7485.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7485
 HV7485.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7485.GEOID18 height accuracy estimate available here.
 HV7485
 HV7485.Click photographs - Photos may exist for this station.
 HV7485
 HV7485.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7485
 HV7485. The following values were computed from the NAD 83(1991) position.
 HV7485
 HV7485;                    North         East     Units Scale Factor Converg.
 HV7485;SPC MD       -   145,591.278   416,837.506   MT  0.99995144   +0 07 19.1
 HV7485;SPC MD       -   477,660.72  1,367,574.38   sFT  0.99995144   +0 07 19.1
 HV7485;UTM  18      - 4,315,895.196   343,589.219   MT  0.99990125   -1 08 09.8
 HV7485
 HV7485!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7485!SPC MD       -   0.99999577  x   0.99995144  =   0.99994721
 HV7485!UTM  18      -   0.99999577  x   0.99990125  =   0.99989702
 HV7485
 HV7485_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4358915895(NAD 83)
 HV7485
 HV7485                          SUPERSEDED SURVEY CONTROL
 HV7485
 HV7485  NAD 83(1986)-  38 58 41.10173(N)    076 48 20.46338(W) AD(       ) 2
 HV7485  NAD 27      -  38 58 40.70403(N)    076 48 21.56986(W) AD(       ) 2
 HV7485  NGVD 29 (07/19/86)   59.7    (m)          196.     (f) VERT ANG       
 HV7485
 HV7485.Superseded values are not recommended for survey control.
 HV7485
 HV7485.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7485.See file dsdata.pdf to determine how the superseded data were derived.
 HV7485
 HV7485_MARKER: I = METAL ROD
 HV7485_SETTING: 0 = UNSPECIFIED SETTING
 HV7485_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7485
 HV7485  HISTORY     - Date     Condition        Report By
 HV7485  HISTORY     - 1969     MONUMENTED       WSSC
 HV7485  HISTORY     - 19960911 MARK NOT FOUND   USPSQD
 HV7485
 HV7485                          STATION DESCRIPTION
 HV7485
 HV7485'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7485'THE STATION IS LOCATED ON THE NORTH SIDE OF DAISY LANE, .3 MILES
 HV7485'EAST OF ROUTE 193 (GLENN DALE ROAD) ABOUT 1.0 MILES SOUTHEAST
 HV7485'OF GLENN DALE AND 1.80 MILES SOUTHWEST OF HIGH BRIDGE.
 HV7485'
 HV7485'TO REACH THE STATION FROM ROUTE 193, GO EAST ON DAISY LANE FOR
 HV7485'ABOUT .30 MILES TO THE STATION ON THE LEFT.  IT IS 400 FEET EAST
 HV7485'OF BELL STATION ROAD.
 HV7485'
 HV7485'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7485'AND IS 1.0 FOOT BELOW THE SURFACE.  IT IS 7.07 FEET SOUTH OF THE
 HV7485'THIRD FENCE POST FROM THE END, 22.98 FEET SOUTHWEST FROM THE
 HV7485'CORNER OF THE FENCE, 71.17 FEET NORTHWEST OF A POLE ON THE SOUTH
 HV7485'SIDE OF THE ROAD, AND 3.57 FEET EAST OF A BOLT ON A WATER METER.
 HV7485
 HV7485                          STATION RECOVERY (1996)
 HV7485
 HV7485'RECOVERY NOTE BY US POWER SQUADRON 1996
 HV7485'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7477 ***********************************************************************
 HV7477  DESIGNATION -  17391 WSSC 1970
 HV7477  PID         -  HV7477
 HV7477  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7477  COUNTRY     -  US
 HV7477  USGS QUAD   -  LANHAM (2016)
 HV7477
 HV7477                         *CURRENT SURVEY CONTROL
 HV7477  ______________________________________________________________________
 HV7477* NAD 83(1991) POSITION- 38 58 15.13219(N) 076 46 01.21640(W)   ADJUSTED
 HV7477* NAVD 88 ORTHO HEIGHT -    52.0   (meters)      171.    (feet) VERTCON3
 HV7477  ______________________________________________________________________
 HV7477  GEOID HEIGHT    -        -32.608 (meters)                     GEOID18
 HV7477  LAPLACE CORR    -         -5.57  (seconds)                    DEFLEC18
 HV7477  HORZ ORDER      -  SECOND
 HV7477
 HV7477.The horizontal coordinates were established by classical geodetic methods
 HV7477.and adjusted by the National Geodetic Survey in January 1992.
 HV7477
 HV7477.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7477.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7477
 HV7477.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7477.GEOID18 height accuracy estimate available here.
 HV7477
 HV7477.Click photographs - Photos may exist for this station.
 HV7477
 HV7477.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7477
 HV7477. The following values were computed from the NAD 83(1991) position.
 HV7477
 HV7477;                    North         East     Units Scale Factor Converg.
 HV7477;SPC MD       -   144,798.264   420,190.824   MT  0.99995122   +0 08 46.4
 HV7477;SPC MD       -   475,058.97  1,378,576.06   sFT  0.99995122   +0 08 46.4
 HV7477;UTM  18      - 4,315,028.808   346,924.132   MT  0.99988854   -1 06 41.5
 HV7477
 HV7477!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7477!SPC MD       -   0.99999696  x   0.99995122  =   0.99994818
 HV7477!UTM  18      -   0.99999696  x   0.99988854  =   0.99988550
 HV7477
 HV7477:                Primary Azimuth Mark                     Grid Az
 HV7477:SPC MD       -  17392 WSSC 1970                          159 53 40.4
 HV7477:UTM  18      -  17392 WSSC 1970                          161 09 08.3
 HV7477
 HV7477_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4692415028(NAD 83)
 HV7477
 HV7477|---------------------------------------------------------------------|
 HV7477| PID    Reference Object                     Distance      Geod. Az  |
 HV7477|                                                           dddmmss.s |
 HV7477| HV7475 17392 WSSC 1970                     406.760 METERS 1600226.8 |
 HV7477| HV7478 17484 WSSC 1970                     302.204 METERS 22456     |
 HV7477|---------------------------------------------------------------------|
 HV7477
 HV7477                          SUPERSEDED SURVEY CONTROL
 HV7477
 HV7477  NAD 83(1986)-  38 58 15.12990(N)    076 46 01.22778(W) AD(       ) 2
 HV7477  NAD 27      -  38 58 14.73164(N)    076 46 02.33864(W) AD(       ) 2
 HV7477  NGVD 29 (07/19/86)   52.2    (m)          171.     (f) VERT ANG       
 HV7477
 HV7477.Superseded values are not recommended for survey control.
 HV7477
 HV7477.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7477.See file dsdata.pdf to determine how the superseded data were derived.
 HV7477
 HV7477_MARKER: B = BOLT
 HV7477_SETTING: 0 = UNSPECIFIED SETTING
 HV7477_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7477
 HV7477  HISTORY     - Date     Condition        Report By
 HV7477  HISTORY     - 1969     MONUMENTED       WSSC
 HV7477
 HV7477                          STATION DESCRIPTION
 HV7477
 HV7477'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7477'THE STATION IS LOCATED ABOUT 1.3 MILES SOUTH OF HIGH BRIDGE AND
 HV7477'.70 MILES WEST OF BELAIR ON THE SOUTH SIDE OF ROUTE 450, 600
 HV7477'FEET WEST OF ROUTE 197 (LAUREL-BOWIE ROAD) SOUTHEAST OF A C AND
 HV7477'P TELEPHONE COMPANY BUILDING.
 HV7477'
 HV7477'TO REACH THE STATION FROM ROUTE 197, GO WEST ON ROUTE 450 FOR
 HV7477'ABOUT 600 FEET WEST OF CHURCH ROAD TO THE STATION ON THE LEFT.
 HV7477'
 HV7477'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7475 ***********************************************************************
 HV7475  DESIGNATION -  17392 WSSC 1970
 HV7475  PID         -  HV7475
 HV7475  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7475  COUNTRY     -  US
 HV7475  USGS QUAD   -  LANHAM (2016)
 HV7475
 HV7475                         *CURRENT SURVEY CONTROL
 HV7475  ______________________________________________________________________
 HV7475* NAD 83(1991) POSITION- 38 58 02.73398(N) 076 45 55.44883(W)   ADJUSTED
 HV7475* NAVD 88 ORTHO HEIGHT -    50.8   (meters)      167.    (feet) VERTCON3
 HV7475  ______________________________________________________________________
 HV7475  GEOID HEIGHT    -        -32.617 (meters)                     GEOID18
 HV7475  LAPLACE CORR    -         -5.57  (seconds)                    DEFLEC18
 HV7475  HORZ ORDER      -  SECOND
 HV7475
 HV7475.The horizontal coordinates were established by classical geodetic methods
 HV7475.and adjusted by the National Geodetic Survey in January 1992.
 HV7475
 HV7475.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7475.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7475
 HV7475.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7475.GEOID18 height accuracy estimate available here.
 HV7475
 HV7475.Click photographs - Photos may exist for this station.
 HV7475
 HV7475.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7475
 HV7475. The following values were computed from the NAD 83(1991) position.
 HV7475
 HV7475;                    North         East     Units Scale Factor Converg.
 HV7475;SPC MD       -   144,416.310   420,330.641   MT  0.99995112   +0 08 50.1
 HV7475;SPC MD       -   473,805.84  1,379,034.78   sFT  0.99995112   +0 08 50.1
 HV7475;UTM  18      - 4,314,643.901   347,055.523   MT  0.99988804   -1 06 37.6
 HV7475
 HV7475!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7475!SPC MD       -   0.99999715  x   0.99995112  =   0.99994827
 HV7475!UTM  18      -   0.99999715  x   0.99988804  =   0.99988519
 HV7475
 HV7475_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4705514643(NAD 83)
 HV7475
 HV7475                          SUPERSEDED SURVEY CONTROL
 HV7475
 HV7475  NAD 83(1986)-  38 58 02.73168(N)    076 45 55.46024(W) AD(       ) 2
 HV7475  NAD 27      -  38 58 02.33324(N)    076 45 56.57128(W) AD(       ) 2
 HV7475  NGVD 29 (07/19/86)   51.0    (m)          167.     (f) VERT ANG       
 HV7475
 HV7475.Superseded values are not recommended for survey control.
 HV7475
 HV7475.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7475.See file dsdata.pdf to determine how the superseded data were derived.
 HV7475
 HV7475_MARKER: I = METAL ROD
 HV7475_SETTING: 0 = UNSPECIFIED SETTING
 HV7475_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7475
 HV7475  HISTORY     - Date     Condition        Report By
 HV7475  HISTORY     - 1969     MONUMENTED       WSSC
 HV7475  HISTORY     - 19960911 GOOD             USPSQD
 HV7475
 HV7475                          STATION DESCRIPTION
 HV7475
 HV7475'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7475'THE STATION IS LOCATED ABOUT 1.5 MILES SOUTH OF HIGH BRIDGE AND
 HV7475'.50 MILES WEST OF BELAIR ON THE EAST SIDE OF CHURCH ROAD, 250
 HV7475'FEET SOUTH OF ROUTE 450.
 HV7475'
 HV7475'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 450, GO
 HV7475'SOUTH ON CHURCH ROAD FOR 250 FEET TO THE STATION ON THE LEFT.
 HV7475'
 HV7475'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7475'AND IS .5 FEET BELOW THE SURFACE.  IT IS 41.49 FEET SOUTH OF C
 HV7475'AND P POLE NO. 5 1/2, 49.49 FEET NORTHEAST OF C AND P POLE
 HV7475'NO. 15040 (NAILS IN THE LEFT SIDE OF POLES), 10.23 FEET NORTH OF
 HV7475'A TACK IN A FENCE POST, AND 64.11 FEET NORTHWEST OF THE NEAR
 HV7475'CORNER OF THE J. R. DEAN RESIDENCE.
 HV7475
 HV7475                          STATION RECOVERY (1996)
 HV7475
 HV7475'RECOVERY NOTE BY US POWER SQUADRON 1996
 HV7475'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8066 ***********************************************************************
 HV8066  DESIGNATION -  17394 WSSC 1970
 HV8066  PID         -  HV8066
 HV8066  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8066  COUNTRY     -  US
 HV8066  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8066
 HV8066                         *CURRENT SURVEY CONTROL
 HV8066  ______________________________________________________________________
 HV8066* NAD 83(1993) POSITION- 38 56 40.71734(N) 076 56 27.69021(W)   ADJUSTED
 HV8066* NAVD 88 ORTHO HEIGHT -     7.4   (meters)       24.    (feet) VERTCON3
 HV8066  ______________________________________________________________________
 HV8066  GEOID HEIGHT    -        -32.175 (meters)                     GEOID18
 HV8066  LAPLACE CORR    -         -4.86  (seconds)                    DEFLEC18
 HV8066  HORZ ORDER      -  SECOND
 HV8066
 HV8066.The horizontal coordinates were established by classical geodetic methods
 HV8066.and adjusted by the National Geodetic Survey in November 1994.
 HV8066
 HV8066.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8066.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8066
 HV8066.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8066.GEOID18 height accuracy estimate available here.
 HV8066
 HV8066.Click photographs - Photos may exist for this station.
 HV8066
 HV8066.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8066
 HV8066. The following values were computed from the NAD 83(1993) position.
 HV8066
 HV8066;                    North         East     Units Scale Factor Converg.
 HV8066;SPC MD       -   141,862.782   405,112.512   MT  0.99995057   +0 02 13.3
 HV8066;SPC MD       -   465,428.14  1,329,106.63   sFT  0.99995057   +0 02 13.3
 HV8066;UTM  18      - 4,312,425.044   331,785.525   MT  0.99994844   -1 13 13.3
 HV8066
 HV8066!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8066!SPC MD       -   1.00000389  x   0.99995057  =   0.99995446
 HV8066!UTM  18      -   1.00000389  x   0.99994844  =   0.99995233
 HV8066
 HV8066:                Primary Azimuth Mark                     Grid Az
 HV8066:SPC MD       -  HALL                                     137 45 50.9
 HV8066:UTM  18      -  HALL                                     139 01 17.5
 HV8066
 HV8066_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3178512425(NAD 83)
 HV8066
 HV8066|---------------------------------------------------------------------|
 HV8066| PID    Reference Object                     Distance      Geod. Az  |
 HV8066|                                                           dddmmss.s |
 HV8066| HV7755 HALL                                APPROX. 2.2 KM 1374804.2 |
 HV8066| HV7744 HYATTSVILLE COUNTY RAD MAST         APPROX. 0.7 KM 3502708.7 |
 HV8066|---------------------------------------------------------------------|
 HV8066
 HV8066                          SUPERSEDED SURVEY CONTROL
 HV8066
 HV8066  NAD 83(1991)-  38 56 40.71705(N)    076 56 27.69042(W) AD(       ) 2
 HV8066  NAD 83(1986)-  38 56 40.71596(N)    076 56 27.70174(W) AD(       ) 2
 HV8066  NAD 27      -  38 56 40.31657(N)    076 56 28.79279(W) AD(       ) 2
 HV8066  NGVD 29 (07/19/86)    7.6    (m)           25.     (f) VERT ANG       
 HV8066
 HV8066.Superseded values are not recommended for survey control.
 HV8066
 HV8066.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8066.See file dsdata.pdf to determine how the superseded data were derived.
 HV8066
 HV8066_MARKER: I = METAL ROD
 HV8066_SETTING: 0 = UNSPECIFIED SETTING
 HV8066_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8066
 HV8066  HISTORY     - Date     Condition        Report By
 HV8066  HISTORY     - 1969     MONUMENTED       WSSC
 HV8066
 HV8066                          STATION DESCRIPTION
 HV8066
 HV8066'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8066'THE STATION IS LOCATED SOUTH OF HYATTSVILLE AND NORTHWEST OF
 HV8066'BLADENSBURG ON THE EAST SIDE OF ROUTE 1 (BALTIMORE AVENUE) AND
 HV8066'ON THE SOUTH SIDE OF THE NORTHEAST BRANCH OF THE ANACOSTIA RIVER.
 HV8066'
 HV8066'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 450 (AT
 HV8066'PEACE CROSS), GO NORTH ON ROUTE 1 FOR .40 MILES TO THE STATION
 HV8066'ON THE RIGHT.
 HV8066'
 HV8066'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8066'AND IS .7 FEET BELOW THE SURFACE.  IT IS 36.59 FEET SOUTH OF AN
 HV8066'X CUT IN THE SOUTH END OF A BRIDGE OVER THE NORTHEAST BRANCH OF
 HV8066'THE ANACOSTIA RIVER, 6.71 FEET EAST OF THE EAST EDGE OF A CONCRETE
 HV8066'WALK AND 68.32 FEET NORTH OF PEPCO POLE NO. 811663.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8063 ***********************************************************************
 HV8063  DESIGNATION -  17395 WSSC 1970
 HV8063  PID         -  HV8063
 HV8063  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8063  COUNTRY     -  US
 HV8063  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8063
 HV8063                         *CURRENT SURVEY CONTROL
 HV8063  ______________________________________________________________________
 HV8063* NAD 83(1993) POSITION- 38 56 58.12735(N) 076 56 06.32096(W)   ADJUSTED
 HV8063* NAVD 88 ORTHO HEIGHT -     7.5   (meters)       25.    (feet) VERTCON3
 HV8063  ______________________________________________________________________
 HV8063  GEOID HEIGHT    -        -32.182 (meters)                     GEOID18
 HV8063  LAPLACE CORR    -         -4.86  (seconds)                    DEFLEC18
 HV8063  HORZ ORDER      -  SECOND
 HV8063
 HV8063.The horizontal coordinates were established by classical geodetic methods
 HV8063.and adjusted by the National Geodetic Survey in November 1994.
 HV8063
 HV8063.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8063.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8063
 HV8063.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8063.GEOID18 height accuracy estimate available here.
 HV8063
 HV8063.Click photographs - Photos may exist for this station.
 HV8063
 HV8063.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8063
 HV8063. The following values were computed from the NAD 83(1993) position.
 HV8063
 HV8063;                    North         East     Units Scale Factor Converg.
 HV8063;SPC MD       -   142,399.983   405,626.711   MT  0.99995067   +0 02 26.7
 HV8063;SPC MD       -   467,190.61  1,330,793.63   sFT  0.99995067   +0 02 26.7
 HV8063;UTM  18      - 4,312,950.830   332,311.387   MT  0.99994626   -1 13 00.3
 HV8063
 HV8063!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8063!SPC MD       -   1.00000388  x   0.99995067  =   0.99995455
 HV8063!UTM  18      -   1.00000388  x   0.99994626  =   0.99995014
 HV8063
 HV8063_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3231112950(NAD 83)
 HV8063
 HV8063                          SUPERSEDED SURVEY CONTROL
 HV8063
 HV8063  NAD 83(1991)-  38 56 58.12705(N)    076 56 06.32117(W) AD(       ) 2
 HV8063  NAD 83(1986)-  38 56 58.12591(N)    076 56 06.33242(W) AD(       ) 2
 HV8063  NAD 27      -  38 56 57.72673(N)    076 56 07.42408(W) AD(       ) 2
 HV8063  NGVD 29 (07/19/86)    7.7    (m)           25.     (f) VERT ANG       
 HV8063
 HV8063.Superseded values are not recommended for survey control.
 HV8063
 HV8063.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8063.See file dsdata.pdf to determine how the superseded data were derived.
 HV8063
 HV8063_MARKER: I = METAL ROD
 HV8063_SETTING: 0 = UNSPECIFIED SETTING
 HV8063_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8063
 HV8063  HISTORY     - Date     Condition        Report By
 HV8063  HISTORY     - 1969     MONUMENTED       WSSC
 HV8063
 HV8063                          STATION DESCRIPTION
 HV8063
 HV8063'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8063'THE STATION IS LOCATED IN THE TOWN OF EDMONSTON ON THE SOUTH SIDE
 HV8063'OF DECATUR STREET AND ON THE WEST SIDE OF NORTHEAST BRANCH.
 HV8063'
 HV8063'TO REACH THE STATION FROM ROUTE 201, (KENILWORTH AVENUE), GO
 HV8063'WEST ON DECATUR STREET FOR .30 MILES TO THE STATION ON THE LEFT,
 HV8063'ABOUT 300 FEET EAST OF TAYLOR ROAD.
 HV8063'
 HV8063'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8063'AND IS .5 FEET BELOW THE SURFACE.  IT IS 16.46 FEET WEST OF AN
 HV8063'X CUT IN THE WEST END OF A BRIDGE OVER NORTHEAST BRANCH, 5.00
 HV8063'FEET SOUTH OF THE SOUTH EDGE OF A CONCRETE WALK AND 14.53 FEET
 HV8063'WEST OF PEPCO POLE NO. 85126.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8058 ***********************************************************************
 HV8058  DESIGNATION -  17396 WSSC 1970
 HV8058  PID         -  HV8058
 HV8058  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8058  COUNTRY     -  US
 HV8058  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8058
 HV8058                         *CURRENT SURVEY CONTROL
 HV8058  ______________________________________________________________________
 HV8058* NAD 83(1993) POSITION- 38 56 39.48920(N) 076 54 08.26549(W)   ADJUSTED
 HV8058* NAVD 88 ORTHO HEIGHT -    68.4   (meters)      224.    (feet) VERTCON3
 HV8058  ______________________________________________________________________
 HV8058  GEOID HEIGHT    -        -32.272 (meters)                     GEOID18
 HV8058  LAPLACE CORR    -         -5.02  (seconds)                    DEFLEC18
 HV8058  HORZ ORDER      -  SECOND
 HV8058
 HV8058.The horizontal coordinates were established by classical geodetic methods
 HV8058.and adjusted by the National Geodetic Survey in November 1994.
 HV8058
 HV8058.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8058.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8058
 HV8058.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8058.GEOID18 height accuracy estimate available here.
 HV8058
 HV8058.Click photographs - Photos may exist for this station.
 HV8058
 HV8058.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8058
 HV8058. The following values were computed from the NAD 83(1993) position.
 HV8058
 HV8058;                    North         East     Units Scale Factor Converg.
 HV8058;SPC MD       -   141,827.793   408,469.960   MT  0.99995056   +0 03 40.8
 HV8058;SPC MD       -   465,313.35  1,340,121.86   sFT  0.99995056   +0 03 40.8
 HV8058;UTM  18      - 4,312,316.392   335,141.366   MT  0.99993467   -1 11 45.5
 HV8058
 HV8058!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8058!SPC MD       -   0.99999434  x   0.99995056  =   0.99994490
 HV8058!UTM  18      -   0.99999434  x   0.99993467  =   0.99992901
 HV8058
 HV8058:                Primary Azimuth Mark                     Grid Az
 HV8058:SPC MD       -  HALL                                     228 46 22.4
 HV8058:UTM  18      -  HALL                                     230 01 48.7
 HV8058
 HV8058_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3514112316(NAD 83)
 HV8058
 HV8058|---------------------------------------------------------------------|
 HV8058| PID    Reference Object                     Distance      Geod. Az  |
 HV8058|                                                           dddmmss.s |
 HV8058| HV7755 HALL                                APPROX. 2.5 KM 2285003.2 |
 HV8058|---------------------------------------------------------------------|
 HV8058
 HV8058                          SUPERSEDED SURVEY CONTROL
 HV8058
 HV8058  NAD 83(1991)-  38 56 39.48887(N)    076 54 08.26572(W) AD(       ) 2
 HV8058  NAD 83(1986)-  38 56 39.48754(N)    076 54 08.27707(W) AD(       ) 2
 HV8058  NAD 27      -  38 56 39.08786(N)    076 54 09.37212(W) AD(       ) 2
 HV8058  NGVD 29 (07/19/86)   68.6    (m)          225.     (f) VERT ANG       
 HV8058
 HV8058.Superseded values are not recommended for survey control.
 HV8058
 HV8058.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8058.See file dsdata.pdf to determine how the superseded data were derived.
 HV8058
 HV8058_MARKER: I = METAL ROD
 HV8058_SETTING: 0 = UNSPECIFIED SETTING
 HV8058_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8058
 HV8058  HISTORY     - Date     Condition        Report By
 HV8058  HISTORY     - 1969     MONUMENTED       WSSC
 HV8058
 HV8058                          STATION DESCRIPTION
 HV8058
 HV8058'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8058'THE STATION IS LOCATED IN DEFENSE HEIGHTS ABOUT .30 MILES EAST
 HV8058'OF THE BALTIMORE WASHINGTON PARKWAY AT THE NORTHWEST CORNER OF
 HV8058'THE INTERSECTION OF 68TH AVENUE AND WEBSTER STREET.
 HV8058'
 HV8058'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 450, GO
 HV8058'NORTHWEST ON 68TH AVENUE FOR .20 MILES TO THE STATION ON THE LEFT.
 HV8058'
 HV8058'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8058'AND IS .6 FEET BELOW THE SURFACE.  IT IS 13.05 FEET NORTHEAST OF
 HV8058'THE CENTER OF A MANHOLE, 27.41 FEET SOUTH OF AN ANGLE OF A CHAIN
 HV8058'LINK FENCE, AND 14.26 FEET SOUTHEAST OF AN ANGLE OF A CHAIN LINK
 HV8058'FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8060 ***********************************************************************
 HV8060  DESIGNATION -  17397 WSSC 1970
 HV8060  PID         -  HV8060
 HV8060  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8060  COUNTRY     -  US
 HV8060  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8060
 HV8060                         *CURRENT SURVEY CONTROL
 HV8060  ______________________________________________________________________
 HV8060* NAD 83(1993) POSITION- 38 56 19.01690(N) 076 54 37.96255(W)   ADJUSTED
 HV8060* NAVD 88 ORTHO HEIGHT -    57.4   (meters)      188.    (feet) VERTCON3
 HV8060  ______________________________________________________________________
 HV8060  GEOID HEIGHT    -        -32.260 (meters)                     GEOID18
 HV8060  LAPLACE CORR    -         -4.94  (seconds)                    DEFLEC18
 HV8060  HORZ ORDER      -  SECOND
 HV8060
 HV8060.The horizontal coordinates were established by classical geodetic methods
 HV8060.and adjusted by the National Geodetic Survey in November 1994.
 HV8060
 HV8060.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8060.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8060
 HV8060.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8060.GEOID18 height accuracy estimate available here.
 HV8060
 HV8060.Click photographs - Photos may exist for this station.
 HV8060
 HV8060.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8060
 HV8060. The following values were computed from the NAD 83(1993) position.
 HV8060
 HV8060;                    North         East     Units Scale Factor Converg.
 HV8060;SPC MD       -   141,195.780   407,755.457   MT  0.99995045   +0 03 22.1
 HV8060;SPC MD       -   463,239.82  1,337,777.70   sFT  0.99995045   +0 03 22.1
 HV8060;UTM  18      - 4,311,700.217   334,413.179   MT  0.99993764   -1 12 03.7
 HV8060
 HV8060!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8060!SPC MD       -   0.99999606  x   0.99995045  =   0.99994651
 HV8060!UTM  18      -   0.99999606  x   0.99993764  =   0.99993370
 HV8060
 HV8060:                Primary Azimuth Mark                     Grid Az
 HV8060:SPC MD       -  17396 WSSC 1970                          048 30 20.4
 HV8060:UTM  18      -  17396 WSSC 1970                          049 45 46.2
 HV8060
 HV8060_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3441311700(NAD 83)
 HV8060
 HV8060|---------------------------------------------------------------------|
 HV8060| PID    Reference Object                     Distance      Geod. Az  |
 HV8060|                                                           dddmmss.s |
 HV8060| HV8058 17396 WSSC 1970                     APPROX. 1.0 KM 0483342.5 |
 HV8060| HV7753 ROGERS HEIGHTS STANDPIPE            APPROX. 1.0 KM 3104927.4 |
 HV8060|---------------------------------------------------------------------|
 HV8060
 HV8060                          SUPERSEDED SURVEY CONTROL
 HV8060
 HV8060  NAD 83(1991)-  38 56 19.01658(N)    076 54 37.96279(W) AD(       ) 2
 HV8060  NAD 83(1986)-  38 56 19.01531(N)    076 54 37.97420(W) AD(       ) 2
 HV8060  NAD 27      -  38 56 18.61523(N)    076 54 39.06819(W) AD(       ) 2
 HV8060  NGVD 29 (07/19/86)   57.6    (m)          189.     (f) VERT ANG       
 HV8060
 HV8060.Superseded values are not recommended for survey control.
 HV8060
 HV8060.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8060.See file dsdata.pdf to determine how the superseded data were derived.
 HV8060
 HV8060_MARKER: I = METAL ROD
 HV8060_SETTING: 0 = UNSPECIFIED SETTING
 HV8060_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8060
 HV8060  HISTORY     - Date     Condition        Report By
 HV8060  HISTORY     - 1969     MONUMENTED       WSSC
 HV8060
 HV8060                          STATION DESCRIPTION
 HV8060
 HV8060'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8060'THE STATION IS LOCATED .20 MILES EAST OF THE BALTIMORE-WASHINGTON
 HV8060'PARKWAY AND ABOUT .40 MILES NORTH OF CHEVERLY ON THE SOUTH SIDE
 HV8060'OF ROUTE 450.
 HV8060'
 HV8060'TO REACH THE STATION FROM THE INTERSECTION OF 62ND AVENUE, GO
 HV8060'EAST ON ROUTE 450 FOR 100 FEET TO THE STATION ON THE RIGHT.
 HV8060'
 HV8060'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8060'AND IS .5 FEET BELOW THE SURFACE.  IT IS 90.05 FEET EAST OF PEPCO
 HV8060'POLE NO. 85801, 49.48 FEET WEST OF PEPCO POLE NO. 865807, AND
 HV8060'7.83 FEET SOUTH OF P.C. OF CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8062 ***********************************************************************
 HV8062  DESIGNATION -  17398 WSSC 1970
 HV8062  PID         -  HV8062
 HV8062  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8062  COUNTRY     -  US
 HV8062  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8062
 HV8062                         *CURRENT SURVEY CONTROL
 HV8062  ______________________________________________________________________
 HV8062* NAD 83(1993) POSITION- 38 54 34.21780(N) 076 55 17.12632(W)   ADJUSTED
 HV8062* NAVD 88 ORTHO HEIGHT -    72.2   (meters)      237.    (feet) VERTCON3
 HV8062  ______________________________________________________________________
 HV8062  GEOID HEIGHT    -        -32.278 (meters)                     GEOID18
 HV8062  LAPLACE CORR    -         -4.70  (seconds)                    DEFLEC18
 HV8062  HORZ ORDER      -  SECOND
 HV8062
 HV8062.The horizontal coordinates were established by classical geodetic methods
 HV8062.and adjusted by the National Geodetic Survey in November 1994.
 HV8062
 HV8062.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8062.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8062
 HV8062.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8062.GEOID18 height accuracy estimate available here.
 HV8062
 HV8062.Click photographs - Photos may exist for this station.
 HV8062
 HV8062.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8062
 HV8062. The following values were computed from the NAD 83(1993) position.
 HV8062
 HV8062;                    North         East     Units Scale Factor Converg.
 HV8062;SPC MD       -   137,963.360   406,815.079   MT  0.99995002   +0 02 57.5
 HV8062;SPC MD       -   452,634.79  1,334,692.47   sFT  0.99995002   +0 02 57.5
 HV8062;UTM  18      - 4,308,489.234   333,402.139   MT  0.99994177   -1 12 25.6
 HV8062
 HV8062!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8062!SPC MD       -   0.99999374  x   0.99995002  =   0.99994376
 HV8062!UTM  18      -   0.99999374  x   0.99994177  =   0.99993551
 HV8062
 HV8062:                Primary Azimuth Mark                     Grid Az
 HV8062:SPC MD       -  HALL                                     354 58 10.7
 HV8062:UTM  18      -  HALL                                     356 13 33.8
 HV8062
 HV8062_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3340208489(NAD 83)
 HV8062
 HV8062|---------------------------------------------------------------------|
 HV8062| PID    Reference Object                     Distance      Geod. Az  |
 HV8062|                                                           dddmmss.s |
 HV8062| HV7768 SEAT PLEASANT POLICE RAD MAST       APPROX. 2.4 KM 1402155.6 |
 HV8062| HV8061 17399 WSSC 1970                     212.399 METERS 14119     |
 HV8062| HV7755 HALL                                APPROX. 2.3 KM 3550108.2 |
 HV8062|---------------------------------------------------------------------|
 HV8062
 HV8062                          SUPERSEDED SURVEY CONTROL
 HV8062
 HV8062  NAD 83(1991)-  38 54 34.21750(N)    076 55 17.12662(W) AD(       ) 2
 HV8062  NAD 83(1986)-  38 54 34.21630(N)    076 55 17.13840(W) AD(       ) 2
 HV8062  NAD 27      -  38 54 33.81472(N)    076 55 18.23211(W) AD(       ) 2
 HV8062  NGVD 29 (07/19/86)   72.4    (m)          238.     (f) VERT ANG       
 HV8062
 HV8062.Superseded values are not recommended for survey control.
 HV8062
 HV8062.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8062.See file dsdata.pdf to determine how the superseded data were derived.
 HV8062
 HV8062_MARKER: I = METAL ROD
 HV8062_SETTING: 0 = UNSPECIFIED SETTING
 HV8062_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8062
 HV8062  HISTORY     - Date     Condition        Report By
 HV8062  HISTORY     - 1969     MONUMENTED       WSSC
 HV8062
 HV8062                          STATION DESCRIPTION
 HV8062
 HV8062'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8062'THE STATION IS LOCATED IN CHAPEL OAKS ON THE SOUTH SIDE OF
 HV8062'ADDISON ROAD, .4 MILES NORTHWEST OF SHERIFF ROAD NEAR MARY MC LEOD
 HV8062'BETHUNE JR. HIGH SCHOOL, 50 FEET EAST OF REED STREET.
 HV8062'
 HV8062'TO REACH THE STATION FROM SHERIFF ROAD, GO NORTHWEST ON ADDISON
 HV8062'ROAD FOR .40 MILES TO THE STATION ON THE LEFT.
 HV8062'
 HV8062'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8062'AND IS .5 FEET BELOW THE SURFACE.  IT IS 40.89 FEET EAST OF PEPCO
 HV8062'POLE NO. 863820, 39.91 FEET SOUTH OF A POLE, 48.62 FEET NORTHWEST
 HV8062'OF THE NEAR CORNER OF THE TOP OF A CONCRETE STEP OF HOUSE NO. 5313
 HV8062'AND IS BETWEEN THE WALK AND CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8061 ***********************************************************************
 HV8061  DESIGNATION -  17399 WSSC 1970
 HV8061  PID         -  HV8061
 HV8061  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8061  COUNTRY     -  US
 HV8061  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8061
 HV8061                         *CURRENT SURVEY CONTROL
 HV8061  ______________________________________________________________________
 HV8061* NAD 83(1993) POSITION- 38 54 28.84049(N) 076 55 11.61750(W)   ADJUSTED
 HV8061* NAVD 88 ORTHO HEIGHT -    71.6   (meters)      235.    (feet) VERTCON3
 HV8061  ______________________________________________________________________
 HV8061  GEOID HEIGHT    -        -32.284 (meters)                     GEOID18
 HV8061  LAPLACE CORR    -         -4.72  (seconds)                    DEFLEC18
 HV8061  HORZ ORDER      -  SECOND
 HV8061
 HV8061.The horizontal coordinates were established by classical geodetic methods
 HV8061.and adjusted by the National Geodetic Survey in November 1994.
 HV8061
 HV8061.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8061.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8061
 HV8061.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8061.GEOID18 height accuracy estimate available here.
 HV8061
 HV8061.Click photographs - Photos may exist for this station.
 HV8061
 HV8061.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8061
 HV8061. The following values were computed from the NAD 83(1993) position.
 HV8061
 HV8061;                    North         East     Units Scale Factor Converg.
 HV8061;SPC MD       -   137,797.663   406,947.944   MT  0.99995001   +0 03 01.0
 HV8061;SPC MD       -   452,091.17  1,335,128.38   sFT  0.99995001   +0 03 01.0
 HV8061;UTM  18      - 4,308,320.665   333,531.338   MT  0.99994124   -1 12 22.0
 HV8061
 HV8061!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8061!SPC MD       -   0.99999384  x   0.99995001  =   0.99994385
 HV8061!UTM  18      -   0.99999384  x   0.99994124  =   0.99993508
 HV8061
 HV8061_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3353108320(NAD 83)
 HV8061
 HV8061                          SUPERSEDED SURVEY CONTROL
 HV8061
 HV8061  NAD 83(1991)-  38 54 28.84019(N)    076 55 11.61779(W) AD(       ) 2
 HV8061  NAD 83(1986)-  38 54 28.83898(N)    076 55 11.62959(W) AD(       ) 2
 HV8061  NAD 27      -  38 54 28.43730(N)    076 55 12.72350(W) AD(       ) 2
 HV8061  NGVD 29 (07/19/86)   71.8    (m)          236.     (f) VERT ANG       
 HV8061
 HV8061.Superseded values are not recommended for survey control.
 HV8061
 HV8061.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8061.See file dsdata.pdf to determine how the superseded data were derived.
 HV8061
 HV8061_MARKER: I = METAL ROD
 HV8061_SETTING: 0 = UNSPECIFIED SETTING
 HV8061_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8061
 HV8061  HISTORY     - Date     Condition        Report By
 HV8061  HISTORY     - 1969     MONUMENTED       WSSC
 HV8061
 HV8061                          STATION DESCRIPTION
 HV8061
 HV8061'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8061'THE STATION IS LOCATED IN CHAPEL OAKS ON THE SOUTH SIDE OF ADDISON
 HV8061'ROAD, 100 FEET WEST OF 54TH AVENUE, .25 MILES NORTHWEST OF SHERIFF
 HV8061'ROAD.
 HV8061'
 HV8061'TO REACH THE STATION FROM SHERIFF ROAD, GO NORTHWEST FOR .25
 HV8061'MILES ON ADDISON ROAD TO THE STATION ON THE LEFT.
 HV8061'
 HV8061'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8061'AND IS .2 FEET BELOW THE SURFACE.  IT IS OPPOSITE HOUSE NO. 5347,
 HV8061'12.84 FEET WEST OF POLE NO. 851829, 19.28 FEET NORTHWEST OF THE
 HV8061'NEAR CORNER OF THE EAST PILLAR, 19.16 FEET NORTHEAST OF A NEAR
 HV8061'CORNER OF A PILLAR ON THE WEST SIDE OF THE WALK, AND 30.76 FEET
 HV8061'NORTHEAST OF THE NEAR CORNER OF THE WEST PILLAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7630 ***********************************************************************
 HV7630  DESIGNATION -  17400 WSSC 1970
 HV7630  PID         -  HV7630
 HV7630  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7630  COUNTRY     -  US
 HV7630  USGS QUAD   -  ANACOSTIA (2016)
 HV7630
 HV7630                         *CURRENT SURVEY CONTROL
 HV7630  ______________________________________________________________________
 HV7630* NAD 83(1993) POSITION- 38 50 26.53118(N) 076 56 31.33580(W)   ADJUSTED
 HV7630* NAVD 88 ORTHO HEIGHT -    87.9   (meters)      288.    (feet) VERTCON3
 HV7630  ______________________________________________________________________
 HV7630  GEOID HEIGHT    -        -32.330 (meters)                     GEOID18
 HV7630  LAPLACE CORR    -         -4.05  (seconds)                    DEFLEC18
 HV7630  HORZ ORDER      -  SECOND
 HV7630
 HV7630.The horizontal coordinates were established by classical geodetic methods
 HV7630.and adjusted by the National Geodetic Survey in November 1994.
 HV7630
 HV7630.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7630.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7630
 HV7630.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7630.GEOID18 height accuracy estimate available here.
 HV7630
 HV7630.Click photographs - Photos may exist for this station.
 HV7630
 HV7630.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7630
 HV7630. The following values were computed from the NAD 83(1993) position.
 HV7630
 HV7630;                    North         East     Units Scale Factor Converg.
 HV7630;SPC MD       -   130,324.502   405,032.051   MT  0.99995003   +0 02 11.0
 HV7630;SPC MD       -   427,572.97  1,328,842.65   sFT  0.99995003   +0 02 11.0
 HV7630;UTM  18      - 4,300,891.310   331,452.169   MT  0.99994983   -1 13 05.7
 HV7630
 HV7630!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7630!SPC MD       -   0.99999129  x   0.99995003  =   0.99994132
 HV7630!UTM  18      -   0.99999129  x   0.99994983  =   0.99994112
 HV7630
 HV7630:                Primary Azimuth Mark                     Grid Az
 HV7630:SPC MD       -  HYDRO                                    061 39 43.0
 HV7630:UTM  18      -  HYDRO                                    062 54 59.7
 HV7630
 HV7630_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3145200891(NAD 83)
 HV7630
 HV7630|---------------------------------------------------------------------|
 HV7630| PID    Reference Object                     Distance      Geod. Az  |
 HV7630|                                                           dddmmss.s |
 HV7630| HV7617 SUITLAND US ARMY RELAY TOWER        APPROX. 0.6 KM 0474838.2 |
 HV7630| HV7613 HYDRO                               APPROX. 1.2 KM 0614154.0 |
 HV7630| HV7631 17401 WSSC 1970                     388.633 METERS 24810     |
 HV7630|---------------------------------------------------------------------|
 HV7630
 HV7630                          SUPERSEDED SURVEY CONTROL
 HV7630
 HV7630  NAD 83(1991)-  38 50 26.53046(N)    076 56 31.33635(W) AD(       ) 2
 HV7630  NAD 83(1986)-  38 50 26.52938(N)    076 56 31.34871(W) AD(       ) 2
 HV7630  NAD 27      -  38 50 26.12376(N)    076 56 32.44090(W) AD(       ) 2
 HV7630  NGVD 29 (07/19/86)   88.1    (m)          289.     (f) VERT ANG       
 HV7630
 HV7630.Superseded values are not recommended for survey control.
 HV7630
 HV7630.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7630.See file dsdata.pdf to determine how the superseded data were derived.
 HV7630
 HV7630_MARKER: B = BOLT
 HV7630_SETTING: 0 = UNSPECIFIED SETTING
 HV7630_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7630
 HV7630  HISTORY     - Date     Condition        Report By
 HV7630  HISTORY     - 1969     MONUMENTED       WSSC
 HV7630
 HV7630                          STATION DESCRIPTION
 HV7630
 HV7630'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7630'THE STATION IS LOCATED ABOUT 1.0 MILE SOUTHWEST OF SUITLAND ON THE
 HV7630'SOUTH SIDE OF SILVER HILL ROAD.
 HV7630'
 HV7630'TO REACH THE STATION FROM ROUTE 5 (BRANCH AVENUE), GO EAST ON
 HV7630'SILVER HILL ROAD (ROUTE 458) FOR .20 MILES TO THE STATION ON
 HV7630'THE RIGHT.
 HV7630'
 HV7630'THE STATION MARK IS A BRASS BOLT IN A CONCRETE ISLAND.  IT IS
 HV7630'12.69 FEET EAST OF THE WEST EDGE OF THE ISLAND, 4.10 FEET SOUTH
 HV7630'OF THE NORTH EDGE OF THE ISLAND, 13.97 FEET NORTHWEST OF THE
 HV7630'SOUTHEAST EDGE OF THE ISLAND AND THE R.P.S ARE X CUTS IN THE
 HV7630'CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7631 ***********************************************************************
 HV7631  DESIGNATION -  17401 WSSC 1970
 HV7631  PID         -  HV7631
 HV7631  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7631  COUNTRY     -  US
 HV7631  USGS QUAD   -  ANACOSTIA (2016)
 HV7631
 HV7631                         *CURRENT SURVEY CONTROL
 HV7631  ______________________________________________________________________
 HV7631* NAD 83(1993) POSITION- 38 50 21.84516(N) 076 56 46.29496(W)   ADJUSTED
 HV7631* NAVD 88 ORTHO HEIGHT -    88.3   (meters)      290.    (feet) VERTCON3
 HV7631  ______________________________________________________________________
 HV7631  GEOID HEIGHT    -        -32.324 (meters)                     GEOID18
 HV7631  LAPLACE CORR    -         -3.95  (seconds)                    DEFLEC18
 HV7631  HORZ ORDER      -  SECOND
 HV7631
 HV7631.The horizontal coordinates were established by classical geodetic methods
 HV7631.and adjusted by the National Geodetic Survey in November 1994.
 HV7631
 HV7631.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7631.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7631
 HV7631.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7631.GEOID18 height accuracy estimate available here.
 HV7631
 HV7631.Click photographs - Photos may exist for this station.
 HV7631
 HV7631.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7631
 HV7631. The following values were computed from the NAD 83(1993) position.
 HV7631
 HV7631;                    North         East     Units Scale Factor Converg.
 HV7631;SPC MD       -   130,179.787   404,671.388   MT  0.99995005   +0 02 01.6
 HV7631;SPC MD       -   427,098.18  1,327,659.38   sFT  0.99995005   +0 02 01.6
 HV7631;UTM  18      - 4,300,754.526   331,088.424   MT  0.99995134   -1 13 15.0
 HV7631
 HV7631!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7631!SPC MD       -   0.99999122  x   0.99995005  =   0.99994127
 HV7631!UTM  18      -   0.99999122  x   0.99995134  =   0.99994256
 HV7631
 HV7631:                Primary Azimuth Mark                     Grid Az
 HV7631:SPC MD       -  SUITLAND US ARMY RELAY TOWER             055 24 59.3
 HV7631:UTM  18      -  SUITLAND US ARMY RELAY TOWER             056 40 15.9
 HV7631
 HV7631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3108800754(NAD 83)
 HV7631
 HV7631|---------------------------------------------------------------------|
 HV7631| PID    Reference Object                     Distance      Geod. Az  |
 HV7631|                                                           dddmmss.s |
 HV7631| HV7617 SUITLAND US ARMY RELAY TOWER        APPROX. 1.0 KM 0552700.9 |
 HV7631| HV7630 17400 WSSC 1970                     388.633 METERS 06810     |
 HV7631|---------------------------------------------------------------------|
 HV7631
 HV7631                          SUPERSEDED SURVEY CONTROL
 HV7631
 HV7631  NAD 83(1991)-  38 50 21.84445(N)    076 56 46.29551(W) AD(       ) 2
 HV7631  NAD 83(1986)-  38 50 21.84340(N)    076 56 46.30789(W) AD(       ) 2
 HV7631  NAD 27      -  38 50 21.43773(N)    076 56 47.39962(W) AD(       ) 2
 HV7631  NGVD 29 (07/19/86)   88.5    (m)          290.     (f) VERT ANG       
 HV7631
 HV7631.Superseded values are not recommended for survey control.
 HV7631
 HV7631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7631.See file dsdata.pdf to determine how the superseded data were derived.
 HV7631
 HV7631_MARKER: Z = SEE DESCRIPTION
 HV7631_SETTING: 0 = UNSPECIFIED SETTING
 HV7631_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7631
 HV7631  HISTORY     - Date     Condition        Report By
 HV7631  HISTORY     - 1969     MONUMENTED       WSSC
 HV7631
 HV7631                          STATION DESCRIPTION
 HV7631
 HV7631'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7631'THE STATION IS LOCATED AT SILVER HILL AT THE SOUTHEAST CORNER
 HV7631'OF THE INTERSECTION OF ROUTE 5 (BRANCH AVENUE) AND ROUTE 458
 HV7631'(SILVER HILL ROAD).
 HV7631'
 HV7631'THE STATION MARK IS A BRASS SCREW IN THE CENTER OF A CONCRETE
 HV7631'WALK IN AN ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7937 ***********************************************************************
 HV7937  DESIGNATION -  17402
 HV7937  PID         -  HV7937
 HV7937  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7937  COUNTRY     -  US
 HV7937  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7937
 HV7937                         *CURRENT SURVEY CONTROL
 HV7937  ______________________________________________________________________
 HV7937* NAD 83(1993) POSITION- 38 53 15.34618(N) 076 53 53.49726(W)   ADJUSTED
 HV7937* NAVD 88 ORTHO HEIGHT -    54.4   (meters)      178.    (feet) VERTCON3
 HV7937  ______________________________________________________________________
 HV7937  GEOID HEIGHT    -        -32.364 (meters)                     GEOID18
 HV7937  LAPLACE CORR    -         -4.67  (seconds)                    DEFLEC18
 HV7937  HORZ ORDER      -  SECOND
 HV7937
 HV7937.The horizontal coordinates were established by classical geodetic methods
 HV7937.and adjusted by the National Geodetic Survey in November 1994.
 HV7937
 HV7937.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7937.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7937
 HV7937.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7937.GEOID18 height accuracy estimate available here.
 HV7937
 HV7937.Click photographs - Photos may exist for this station.
 HV7937
 HV7937.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7937
 HV7937. The following values were computed from the NAD 83(1993) position.
 HV7937
 HV7937;                    North         East     Units Scale Factor Converg.
 HV7937;SPC MD       -   135,533.302   408,832.607   MT  0.99994987   +0 03 50.0
 HV7937;SPC MD       -   444,662.17  1,341,311.64   sFT  0.99994987   +0 03 50.0
 HV7937;UTM  18      - 4,306,015.563   335,365.887   MT  0.99993377   -1 11 31.0
 HV7937
 HV7937!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7937!SPC MD       -   0.99999655  x   0.99994987  =   0.99994642
 HV7937!UTM  18      -   0.99999655  x   0.99993377  =   0.99993032
 HV7937
 HV7937:                Primary Azimuth Mark                     Grid Az
 HV7937:SPC MD       -  HILL 3                                   053 34 57.3
 HV7937:UTM  18      -  HILL 3                                   054 50 18.3
 HV7937
 HV7937_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3536506015(NAD 83)
 HV7937
 HV7937|---------------------------------------------------------------------|
 HV7937| PID    Reference Object                     Distance      Geod. Az  |
 HV7937|                                                           dddmmss.s |
 HV7937| HV7829 HILL 3                              APPROX. 1.9 KM 0533847.3 |
 HV7937| HV7936 17403 WSSC 1970                     123.371 METERS 06131     |
 HV7937| HV7768 SEAT PLEASANT POLICE RAD MAST       APPROX. 0.8 KM 3201844.8 |
 HV7937|---------------------------------------------------------------------|
 HV7937
 HV7937                          SUPERSEDED SURVEY CONTROL
 HV7937
 HV7937  NAD 83(1991)-  38 53 15.34577(N)    076 53 53.49745(W) AD(       ) 2
 HV7937  NAD 83(1986)-  38 53 15.34431(N)    076 53 53.50953(W) AD(       ) 2
 HV7937  NAD 27      -  38 53 14.94100(N)    076 53 54.60713(W) AD(       ) 2
 HV7937  NGVD 29 (07/19/86)   54.6    (m)          179.     (f) VERT ANG       
 HV7937
 HV7937.Superseded values are not recommended for survey control.
 HV7937
 HV7937.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7937.See file dsdata.pdf to determine how the superseded data were derived.
 HV7937
 HV7937_MARKER: I = METAL ROD
 HV7937_SETTING: 0 = UNSPECIFIED SETTING
 HV7937
 HV7937  HISTORY     - Date     Condition        Report By
 HV7937  HISTORY     - 1969     MONUMENTED       WSSC
 HV7937
 HV7937                          STATION DESCRIPTION
 HV7937
 HV7937'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7937'THE STATION IS LOCATED IN SEAT PLEASANT ON THE EAST SIDE OF
 HV7937'ADDISON ROAD, .05 MILES NORTH OF ROUTE 214 (CENTRAL AVENUE).
 HV7937'
 HV7937'TO REACH THE STATION FROM CENTRAL AVENUE, GO NORTH ON ADDISON
 HV7937'ROAD FOR .05 MILES TO THE STATION ON THE RIGHT.
 HV7937'
 HV7937'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7937'AND IS .3 FEET BELOW THE SURFACE.  IT IS 1.0 FOOT EAST OF THE
 HV7937'EAST EDGE OF A CONCRETE WALK, 1.7 FEET NORTHWEST OF THE CORNER OF
 HV7937'A CONCRETE WALK AND IS OPPOSITE THE 7-11 STORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7936 ***********************************************************************
 HV7936  DESIGNATION -  17403 WSSC 1970
 HV7936  PID         -  HV7936
 HV7936  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7936  COUNTRY     -  US
 HV7936  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7936
 HV7936                         *CURRENT SURVEY CONTROL
 HV7936  ______________________________________________________________________
 HV7936* NAD 83(1993) POSITION- 38 53 17.25458(N) 076 53 48.99821(W)   ADJUSTED
 HV7936* NAVD 88 ORTHO HEIGHT -    51.4   (meters)      169.    (feet) VERTCON3
 HV7936  ______________________________________________________________________
 HV7936  GEOID HEIGHT    -        -32.367 (meters)                     GEOID18
 HV7936  LAPLACE CORR    -         -4.67  (seconds)                    DEFLEC18
 HV7936  HORZ ORDER      -  SECOND
 HV7936
 HV7936.The horizontal coordinates were established by classical geodetic methods
 HV7936.and adjusted by the National Geodetic Survey in November 1994.
 HV7936
 HV7936.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7936.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7936
 HV7936.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7936.GEOID18 height accuracy estimate available here.
 HV7936
 HV7936.Click photographs - Photos may exist for this station.
 HV7936
 HV7936.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7936
 HV7936. The following values were computed from the NAD 83(1993) position.
 HV7936
 HV7936;                    North         East     Units Scale Factor Converg.
 HV7936;SPC MD       -   135,592.271   408,940.966   MT  0.99994987   +0 03 52.9
 HV7936;SPC MD       -   444,855.64  1,341,667.15   sFT  0.99994987   +0 03 52.9
 HV7936;UTM  18      - 4,306,072.141   335,475.511   MT  0.99993332   -1 11 28.2
 HV7936
 HV7936!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7936!SPC MD       -   0.99999702  x   0.99994987  =   0.99994689
 HV7936!UTM  18      -   0.99999702  x   0.99993332  =   0.99993034
 HV7936
 HV7936_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3547506072(NAD 83)
 HV7936
 HV7936                          SUPERSEDED SURVEY CONTROL
 HV7936
 HV7936  NAD 83(1991)-  38 53 17.25418(N)    076 53 48.99840(W) AD(       ) 2
 HV7936  NAD 83(1986)-  38 53 17.25271(N)    076 53 49.01047(W) AD(       ) 2
 HV7936  NAD 27      -  38 53 16.84944(N)    076 53 50.10821(W) AD(       ) 2
 HV7936  NGVD 29 (07/19/86)   51.6    (m)          169.     (f) VERT ANG       
 HV7936
 HV7936.Superseded values are not recommended for survey control.
 HV7936
 HV7936.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7936.See file dsdata.pdf to determine how the superseded data were derived.
 HV7936
 HV7936_MARKER: I = METAL ROD
 HV7936_SETTING: 0 = UNSPECIFIED SETTING
 HV7936_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7936
 HV7936  HISTORY     - Date     Condition        Report By
 HV7936  HISTORY     - 1969     MONUMENTED       WSSC
 HV7936
 HV7936                          STATION DESCRIPTION
 HV7936
 HV7936'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7936'*THE STATION IS LOCATED IN SEAT PLEASANT AT THE NORTHEAST OF
 HV7936'THE INTERSECTION OF A STREET AND 1ST STREET.
 HV7936'
 HV7936'TO REACH THE STATION FROM CENTRAL AVENUE (ROUTE 214), GO NORTH
 HV7936'ON ADDISON ROAD FOR .05 MILES TO A STREET.  THE GO EAST ON A
 HV7936'STREET FOR 375 FEET TO THE STATION ON THE LEFT.
 HV7936'
 HV7936'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7936'CENTER AND IS SET FLUSH WITH THE SURFACE.  IT IS 45.59 FEET
 HV7936'NORTHEAST OF POLE NO. 46650, 81.21 FEET WEST OF POLE NO.
 HV7936'846656, 55.56 FEET NORTHWEST OF THE CORNER OF A FENCE POST AND
 HV7936'51.92 FEET SOUTH OF THE SOUTHWEST CORNER OF HOUSE NO. 7000,
 HV7936'HOLD ON BRICK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7863 ***********************************************************************
 HV7863  DESIGNATION -  17404
 HV7863  PID         -  HV7863
 HV7863  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7863  COUNTRY     -  US
 HV7863  USGS QUAD   -  LANHAM (2016)
 HV7863
 HV7863                         *CURRENT SURVEY CONTROL
 HV7863  ______________________________________________________________________
 HV7863* NAD 83(1993) POSITION- 38 55 34.19421(N) 076 52 29.39472(W)   ADJUSTED
 HV7863* NAVD 88 ORTHO HEIGHT -    45.4   (meters)      149.    (feet) VERTCON3
 HV7863  ______________________________________________________________________
 HV7863  GEOID HEIGHT    -        -32.373 (meters)                     GEOID18
 HV7863  LAPLACE CORR    -         -4.81  (seconds)                    DEFLEC18
 HV7863  HORZ ORDER      -  SECOND
 HV7863
 HV7863.The horizontal coordinates were established by classical geodetic methods
 HV7863.and adjusted by the National Geodetic Survey in November 1994.
 HV7863
 HV7863.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7863.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7863
 HV7863.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7863.GEOID18 height accuracy estimate available here.
 HV7863
 HV7863.Click photographs - Photos may exist for this station.
 HV7863
 HV7863.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7863
 HV7863. The following values were computed from the NAD 83(1993) position.
 HV7863
 HV7863;                    North         East     Units Scale Factor Converg.
 HV7863;SPC MD       -   139,817.280   410,853.582   MT  0.99995023   +0 04 42.8
 HV7863;SPC MD       -   458,717.19  1,347,942.13   sFT  0.99995023   +0 04 42.8
 HV7863;UTM  18      - 4,310,254.113   337,480.260   MT  0.99992524   -1 10 41.7
 HV7863
 HV7863!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7863!SPC MD       -   0.99999796  x   0.99995023  =   0.99994819
 HV7863!UTM  18      -   0.99999796  x   0.99992524  =   0.99992320
 HV7863
 HV7863:                Primary Azimuth Mark                     Grid Az
 HV7863:SPC MD       -  17530 WSSC 1970                          204 24 56.1
 HV7863:UTM  18      -  17530 WSSC 1970                          205 40 20.6
 HV7863
 HV7863_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3748010254(NAD 83)
 HV7863
 HV7863|---------------------------------------------------------------------|
 HV7863| PID    Reference Object                     Distance      Geod. Az  |
 HV7863|                                                           dddmmss.s |
 HV7863| HV7919 17530 WSSC 1970                     APPROX. 0.6 KM 2042938.9 |
 HV7863| HV7768 SEAT PLEASANT POLICE RAD MAST       APPROX. 4.5 KM 2143421.0 |
 HV7863|---------------------------------------------------------------------|
 HV7863
 HV7863                          SUPERSEDED SURVEY CONTROL
 HV7863
 HV7863  NAD 83(1991)-  38 55 34.19380(N)    076 52 29.39494(W) AD(       ) 2
 HV7863  NAD 83(1986)-  38 55 34.19216(N)    076 52 29.40662(W) AD(       ) 2
 HV7863  NAD 27      -  38 55 33.79169(N)    076 52 30.50581(W) AD(       ) 2
 HV7863  NGVD 29 (07/19/86)   45.6    (m)          150.     (f) VERT ANG       
 HV7863
 HV7863.Superseded values are not recommended for survey control.
 HV7863
 HV7863.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7863.See file dsdata.pdf to determine how the superseded data were derived.
 HV7863
 HV7863_MARKER: B = BOLT
 HV7863_SETTING: 0 = UNSPECIFIED SETTING
 HV7863
 HV7863  HISTORY     - Date     Condition        Report By
 HV7863  HISTORY     - 1969     MONUMENTED       WSSC
 HV7863
 HV7863                          STATION DESCRIPTION
 HV7863
 HV7863'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7863'*THE STATION IS NORTH OF PALMER PARK AND EAST OF KENT VILLAGE
 HV7863'AT THE SOUTHWEST CORNER OF A BRIDGE ON THE SOUTH SIDE OF
 HV7863'LANDOVER ROAD (ROUTE 202) AND ON THE WEST SIDE OR GEORGE
 HV7863'PALMER HIGHWAY (ROUTE 704).
 HV7863'
 HV7863'THE STATION MARK IS A BRASS BOLT IN THE CENTER OF A CONCRETE
 HV7863'WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5972 ***********************************************************************
 JV5972  DESIGNATION -  17405 WSSC 1969
 JV5972  PID         -  JV5972
 JV5972  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5972  COUNTRY     -  US
 JV5972  USGS QUAD   -  BELTSVILLE (2016)
 JV5972
 JV5972                         *CURRENT SURVEY CONTROL
 JV5972  ______________________________________________________________________
 JV5972* NAD 83(1991) POSITION- 39 02 30.65698(N) 076 53 46.40207(W)   ADJUSTED
 JV5972* NAVD 88 ORTHO HEIGHT -    49.3   (meters)      162.    (feet) VERTCON3
 JV5972  ______________________________________________________________________
 JV5972  GEOID HEIGHT    -        -32.181 (meters)                     GEOID18
 JV5972  LAPLACE CORR    -         -4.52  (seconds)                    DEFLEC18
 JV5972  HORZ ORDER      -  SECOND
 JV5972
 JV5972.The horizontal coordinates were established by classical geodetic methods
 JV5972.and adjusted by the National Geodetic Survey in January 1992.
 JV5972
 JV5972.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5972.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5972
 JV5972.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5972.GEOID18 height accuracy estimate available here.
 JV5972
 JV5972.Click photographs - Photos may exist for this station.
 JV5972
 JV5972.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5972
 JV5972. The following values were computed from the NAD 83(1991) position.
 JV5972
 JV5972;                    North         East     Units Scale Factor Converg.
 JV5972;SPC MD       -   152,657.018   408,984.133   MT  0.99995403   +0 03 54.5
 JV5972;SPC MD       -   500,842.23  1,341,808.78   sFT  0.99995403   +0 03 54.5
 JV5972;UTM  18      - 4,323,131.507   335,893.256   MT  0.99993162   -1 11 40.8
 JV5972
 JV5972!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5972!SPC MD       -   0.99999732  x   0.99995403  =   0.99995135
 JV5972!UTM  18      -   0.99999732  x   0.99993162  =   0.99992894
 JV5972
 JV5972:                Primary Azimuth Mark                     Grid Az
 JV5972:SPC MD       -  LIBRARY                                  226 32 19.8
 JV5972:UTM  18      -  LIBRARY                                  227 47 55.1
 JV5972
 JV5972_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3589323131(NAD 83)
 JV5972
 JV5972|---------------------------------------------------------------------|
 JV5972| PID    Reference Object                     Distance      Geod. Az  |
 JV5972|                                                           dddmmss.s |
 JV5972| JV5937 BELTSVILLE DA RSCH CTR N TANK       APPROX. 1.9 KM 1095323.1 |
 JV5972| JV5868 BELTSVILLE DA RSCH CTR S TANK       APPROX. 4.1 KM 1320434.1 |
 JV5972| JV5975 17406 WSSC 1969                     349.850 METERS 21409     |
 JV5972| JV5965 LIBRARY                             APPROX. 3.1 KM 2263614.3 |
 JV5972|---------------------------------------------------------------------|
 JV5972
 JV5972                          SUPERSEDED SURVEY CONTROL
 JV5972
 JV5972  NAD 83(1986)-  39 02 30.65578(N)    076 53 46.41261(W) AD(       ) 2
 JV5972  NAD 27      -  39 02 30.26315(N)    076 53 47.50828(W) AD(       ) 2
 JV5972  NGVD 29 (07/19/86)   49.5    (m)          162.     (f) VERT ANG       
 JV5972
 JV5972.Superseded values are not recommended for survey control.
 JV5972
 JV5972.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5972.See file dsdata.pdf to determine how the superseded data were derived.
 JV5972
 JV5972_MARKER: B = BOLT
 JV5972_SETTING: 0 = UNSPECIFIED SETTING
 JV5972_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5972
 JV5972  HISTORY     - Date     Condition        Report By
 JV5972  HISTORY     - 1969     MONUMENTED       WSSC
 JV5972
 JV5972                          STATION DESCRIPTION
 JV5972
 JV5972'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5972'THE STATION IS LOCATED EAST OF BELTSVILLE AND SOUTHWEST OF
 JV5972'VANSVILLE, 300 FEET SOUTHEAST OF OLD BALTIMORE PIKE AND 750
 JV5972'FEET SOUTHWEST OF ODELL ROAD.
 JV5972'
 JV5972'TO REACH THE STATION FROM OLD BALTIMORE PIKE, GO SOUTHEAST
 JV5972'ON CORDWALL DRIVE FOR 300 FEET TO THE STATION ON THE RIGHT.
 JV5972'
 JV5972'THE STATION MARK IS A BRASS BOLT THE A CONCRETE CURB.  IT IS
 JV5972'74.02 FEET SOUTHEAST OF PEPCO POLE NO. 871582, 66.55 FEET EAST
 JV5972'OF A CORNER OF A HOUSE, 41.20 FEET NORTHEAST OF THE CORNER OF
 JV5972'THE SAME HOUSE, AND 50.16 FEET NORTH OF A CORNER OF A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5975 ***********************************************************************
 JV5975  DESIGNATION -  17406 WSSC 1969
 JV5975  PID         -  JV5975
 JV5975  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5975  COUNTRY     -  US
 JV5975  USGS QUAD   -  BELTSVILLE (2016)
 JV5975
 JV5975                         *CURRENT SURVEY CONTROL
 JV5975  ______________________________________________________________________
 JV5975* NAD 83(1991) POSITION- 39 02 21.26816(N) 076 53 54.56801(W)   ADJUSTED
 JV5975* NAVD 88 ORTHO HEIGHT -    34.5   (meters)      113.    (feet) VERTCON3
 JV5975  ______________________________________________________________________
 JV5975  GEOID HEIGHT    -        -32.178 (meters)                     GEOID18
 JV5975  LAPLACE CORR    -         -4.58  (seconds)                    DEFLEC18
 JV5975  HORZ ORDER      -  SECOND
 JV5975
 JV5975.The horizontal coordinates were established by classical geodetic methods
 JV5975.and adjusted by the National Geodetic Survey in January 1992.
 JV5975
 JV5975.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5975.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5975
 JV5975.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5975.GEOID18 height accuracy estimate available here.
 JV5975
 JV5975.Click photographs - Photos may exist for this station.
 JV5975
 JV5975.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5975
 JV5975. The following values were computed from the NAD 83(1991) position.
 JV5975
 JV5975;                    North         East     Units Scale Factor Converg.
 JV5975;SPC MD       -   152,367.280   408,788.084   MT  0.99995390   +0 03 49.4
 JV5975;SPC MD       -   499,891.65  1,341,165.57   sFT  0.99995390   +0 03 49.4
 JV5975;UTM  18      - 4,322,846.155   335,690.889   MT  0.99993244   -1 11 45.7
 JV5975
 JV5975!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5975!SPC MD       -   0.99999964  x   0.99995390  =   0.99995354
 JV5975!UTM  18      -   0.99999964  x   0.99993244  =   0.99993208
 JV5975
 JV5975_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3569022846(NAD 83)
 JV5975
 JV5975                          SUPERSEDED SURVEY CONTROL
 JV5975
 JV5975  NAD 83(1986)-  39 02 21.26697(N)    076 53 54.57858(W) AD(       ) 2
 JV5975  NAD 27      -  39 02 20.87417(N)    076 53 55.67394(W) AD(       ) 2
 JV5975  NGVD 29 (07/19/86)   34.7    (m)          114.     (f) VERT ANG       
 JV5975
 JV5975.Superseded values are not recommended for survey control.
 JV5975
 JV5975.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5975.See file dsdata.pdf to determine how the superseded data were derived.
 JV5975
 JV5975_MARKER: I = METAL ROD
 JV5975_SETTING: 0 = UNSPECIFIED SETTING
 JV5975_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5975
 JV5975  HISTORY     - Date     Condition        Report By
 JV5975  HISTORY     - 1969     MONUMENTED       WSSC
 JV5975
 JV5975                          STATION DESCRIPTION
 JV5975
 JV5975'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5975'THE STATION IS LOCATED EAST OF BELTSVILLE AND SOUTHWEST
 JV5975'OF VANSVILLE ON THE WEST SIDE OF EDMONSTON AVENUE, 500 FEET
 JV5975'SOUTH OF OLD BALTIMORE PIKE.
 JV5975'
 JV5975'TO REACH THE STATION FROM OLD BALTIMORE PIKE, GO 500 FEET
 JV5975'SOUTHEAST ON EDMONSTON AVENUE TO THE STATION ON THE RIGHT.
 JV5975'
 JV5975'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV5975'CENTER AND IS .3 FEET BELOW THE SURFACE.  IT IS 74.42 FEET
 JV5975'SOUTHWEST OF A POLE, 56.38 FEET NORTHEAST OF THE NORTHEAST
 JV5975'CORNER OF HOUSE NO. 11416, 45.24 FEET NORTHEAST OF THE
 JV5975'NORTHWEST CORNER OF HOUSE NO. 11412, 44.38 FEET NORTHWEST OF
 JV5975'THE NORTHEAST CORNER OF HOUSE NO. 11412, AND 45.99
 JV5975'FEET WEST OF PEPCO POLE NO. 826521.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7536 ***********************************************************************
 HV7536  DESIGNATION -  17407 WSSC 1970
 HV7536  PID         -  HV7536
 HV7536  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7536  COUNTRY     -  US
 HV7536  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7536
 HV7536                         *CURRENT SURVEY CONTROL
 HV7536  ______________________________________________________________________
 HV7536* NAD 83(1993) POSITION- 38 47 29.70404(N) 076 50 00.28571(W)   ADJUSTED
 HV7536* NAVD 88 ORTHO HEIGHT -    65.5   (meters)      215.    (feet) VERTCON3
 HV7536  ______________________________________________________________________
 HV7536  GEOID HEIGHT    -        -32.707 (meters)                     GEOID18
 HV7536  LAPLACE CORR    -         -6.05  (seconds)                    DEFLEC18
 HV7536  HORZ ORDER      -  SECOND
 HV7536
 HV7536.The horizontal coordinates were established by classical geodetic methods
 HV7536.and adjusted by the National Geodetic Survey in November 1994.
 HV7536
 HV7536.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7536.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7536
 HV7536.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7536.GEOID18 height accuracy estimate available here.
 HV7536
 HV7536.Click photographs - Photos may exist for this station.
 HV7536
 HV7536.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7536
 HV7536. The following values were computed from the NAD 83(1993) position.
 HV7536
 HV7536;                    North         East     Units Scale Factor Converg.
 HV7536;SPC MD       -   124,883.621   414,472.380   MT  0.99995092   +0 06 16.4
 HV7536;SPC MD       -   409,722.35  1,359,814.80   sFT  0.99995092   +0 06 16.4
 HV7536;UTM  18      - 4,295,245.243   340,770.982   MT  0.99991222   -1 08 55.9
 HV7536
 HV7536!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7536!SPC MD       -   0.99999486  x   0.99995092  =   0.99994578
 HV7536!UTM  18      -   0.99999486  x   0.99991222  =   0.99990708
 HV7536
 HV7536:                Primary Azimuth Mark                     Grid Az
 HV7536:SPC MD       -  MELLWOOD 3 RM 6                          011 44 42.3
 HV7536:UTM  18      -  MELLWOOD 3 RM 6                          012 59 54.6
 HV7536
 HV7536_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4077095245(NAD 83)
 HV7536
 HV7536|---------------------------------------------------------------------|
 HV7536| PID    Reference Object                     Distance      Geod. Az  |
 HV7536|                                                           dddmmss.s |
 HV7536| HV7511 MELLWOOD 3 RM 6                     APPROX. 2.5 KM 0115058.7 |
 HV7536| HV7537 17408 WSSC 1970                     111.860 METERS 30110     |
 HV7536|---------------------------------------------------------------------|
 HV7536
 HV7536                          SUPERSEDED SURVEY CONTROL
 HV7536
 HV7536  NAD 83(1991)-  38 47 29.70352(N)    076 50 00.28584(W) AD(       ) 2
 HV7536  NAD 83(1986)-  38 47 29.70154(N)    076 50 00.29930(W) AD(       ) 2
 HV7536  NAD 27      -  38 47 29.29179(N)    076 50 01.40370(W) AD(       ) 2
 HV7536  NGVD 29 (07/19/86)   65.7    (m)          216.     (f) VERT ANG       
 HV7536
 HV7536.Superseded values are not recommended for survey control.
 HV7536
 HV7536.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7536.See file dsdata.pdf to determine how the superseded data were derived.
 HV7536
 HV7536_MARKER: B = BOLT
 HV7536_SETTING: 0 = UNSPECIFIED SETTING
 HV7536_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7536
 HV7536  HISTORY     - Date     Condition        Report By
 HV7536  HISTORY     - 1969     MONUMENTED       WSSC
 HV7536
 HV7536                          STATION DESCRIPTION
 HV7536
 HV7536'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7536'THE STATION IS LOCATED ABOUT 1.3 MILES SOUTHWEST OF ROUTE 4
 HV7536'AND 750 FEET SOUTHEAST OF WOODYARD ROAD (ROUTE 223).
 HV7536'
 HV7536'TO REACH THE STATION FROM THE INTERSECTION OF LUKE COURT
 HV7536'AND DOWER HOUSE ROAD, GO EAST ON DOWER HOUSE ROAD FOR 75 FEET
 HV7536'TO THE STATION ON THE RIGHT.
 HV7536'
 HV7536'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CATCH BASIN,
 HV7536'NORTH OF HOUSE NO. 7107.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7537 ***********************************************************************
 HV7537  DESIGNATION -  17408 WSSC 1970
 HV7537  PID         -  HV7537
 HV7537  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7537  COUNTRY     -  US
 HV7537  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7537
 HV7537                         *CURRENT SURVEY CONTROL
 HV7537  ______________________________________________________________________
 HV7537* NAD 83(1993) POSITION- 38 47 31.58093(N) 076 50 04.25214(W)   ADJUSTED
 HV7537* NAVD 88 ORTHO HEIGHT -    64.6   (meters)      212.    (feet) VERTCON3
 HV7537  ______________________________________________________________________
 HV7537  GEOID HEIGHT    -        -32.702 (meters)                     GEOID18
 HV7537  LAPLACE CORR    -         -6.04  (seconds)                    DEFLEC18
 HV7537  HORZ ORDER      -  SECOND
 HV7537
 HV7537.The horizontal coordinates were established by classical geodetic methods
 HV7537.and adjusted by the National Geodetic Survey in November 1994.
 HV7537
 HV7537.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7537.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7537
 HV7537.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7537.GEOID18 height accuracy estimate available here.
 HV7537
 HV7537.Click photographs - Photos may exist for this station.
 HV7537
 HV7537.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7537
 HV7537. The following values were computed from the NAD 83(1993) position.
 HV7537
 HV7537;                    North         East     Units Scale Factor Converg.
 HV7537;SPC MD       -   124,941.321   414,376.557   MT  0.99995091   +0 06 13.9
 HV7537;SPC MD       -   409,911.65  1,359,500.42   sFT  0.99995091   +0 06 13.9
 HV7537;UTM  18      - 4,295,305.023   340,676.448   MT  0.99991259   -1 08 58.4
 HV7537
 HV7537!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7537!SPC MD       -   0.99999500  x   0.99995091  =   0.99994591
 HV7537!UTM  18      -   0.99999500  x   0.99991259  =   0.99990759
 HV7537
 HV7537_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4067695305(NAD 83)
 HV7537
 HV7537                          SUPERSEDED SURVEY CONTROL
 HV7537
 HV7537  NAD 83(1991)-  38 47 31.58041(N)    076 50 04.25226(W) AD(       ) 2
 HV7537  NAD 83(1986)-  38 47 31.57845(N)    076 50 04.26572(W) AD(       ) 2
 HV7537  NAD 27      -  38 47 31.16873(N)    076 50 05.36999(W) AD(       ) 2
 HV7537  NGVD 29 (07/19/86)   64.8    (m)          213.     (f) VERT ANG       
 HV7537
 HV7537.Superseded values are not recommended for survey control.
 HV7537
 HV7537.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7537.See file dsdata.pdf to determine how the superseded data were derived.
 HV7537
 HV7537_MARKER: B = BOLT
 HV7537_SETTING: 0 = UNSPECIFIED SETTING
 HV7537_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7537
 HV7537  HISTORY     - Date     Condition        Report By
 HV7537  HISTORY     - 1969     MONUMENTED       WSSC
 HV7537
 HV7537                          STATION DESCRIPTION
 HV7537
 HV7537'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7537'THE STATION IS LOCATED ABOUT 1.3 MILES SOUTHEAST OF ROUTE 4
 HV7537'AND 500 FEET EAST OF WOODYARD ROAD (ROUTE 223).
 HV7537'
 HV7537'TO REACH THE STATION FROM THE INTERSECTION OF ACTIUM DRIVE
 HV7537'AND DOWER HOUSE ROAD, GO WEST ON DOWER HOUSE ROAD FOR 50 FEET
 HV7537'TO THE STATION ON THE LEFT.
 HV7537'
 HV7537'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CATCH BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7540 ***********************************************************************
 HV7540  DESIGNATION -  17409
 HV7540  PID         -  HV7540
 HV7540  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7540  COUNTRY     -  US
 HV7540  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7540
 HV7540                         *CURRENT SURVEY CONTROL
 HV7540  ______________________________________________________________________
 HV7540* NAD 83(1993) POSITION- 38 49 09.11663(N) 076 50 35.03726(W)   ADJUSTED
 HV7540* NAVD 88 ORTHO HEIGHT -    77.8   (meters)      255.    (feet) VERTCON3
 HV7540  ______________________________________________________________________
 HV7540  GEOID HEIGHT    -        -32.619 (meters)                     GEOID18
 HV7540  LAPLACE CORR    -         -5.75  (seconds)                    DEFLEC18
 HV7540  HORZ ORDER      -  SECOND
 HV7540
 HV7540.The horizontal coordinates were established by classical geodetic methods
 HV7540.and adjusted by the National Geodetic Survey in November 1994.
 HV7540
 HV7540.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7540.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7540
 HV7540.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7540.GEOID18 height accuracy estimate available here.
 HV7540
 HV7540.Click photographs - Photos may exist for this station.
 HV7540
 HV7540.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7540
 HV7540. The following values were computed from the NAD 83(1993) position.
 HV7540
 HV7540;                    North         East     Units Scale Factor Converg.
 HV7540;SPC MD       -   127,947.526   413,628.483   MT  0.99995033   +0 05 54.6
 HV7540;SPC MD       -   419,774.51  1,357,046.11   sFT  0.99995033   +0 05 54.6
 HV7540;UTM  18      - 4,298,326.766   339,994.354   MT  0.99991527   -1 09 20.2
 HV7540
 HV7540!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7540!SPC MD       -   0.99999292  x   0.99995033  =   0.99994325
 HV7540!UTM  18      -   0.99999292  x   0.99991527  =   0.99990819
 HV7540
 HV7540:                Primary Azimuth Mark                     Grid Az
 HV7540:SPC MD       -  MELLWOOD 3 RM 6                          113 35 23.8
 HV7540:UTM  18      -  MELLWOOD 3 RM 6                          114 50 38.6
 HV7540
 HV7540_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3999498326(NAD 83)
 HV7540
 HV7540|---------------------------------------------------------------------|
 HV7540| PID    Reference Object                     Distance      Geod. Az  |
 HV7540|                                                           dddmmss.s |
 HV7540| HV7511 MELLWOOD 3 RM 6                     APPROX. 1.5 KM 1134118.4 |
 HV7540| HV7502 ANDREWS AFB E TANK                  APPROX. 0.7 KM 2335956.8 |
 HV7540| HV7542 17410                               379.970 METERS 29432     |
 HV7540|---------------------------------------------------------------------|
 HV7540
 HV7540                          SUPERSEDED SURVEY CONTROL
 HV7540
 HV7540  NAD 83(1991)-  38 49 09.11608(N)    076 50 35.03748(W) AD(       ) 2
 HV7540  NAD 83(1986)-  38 49 09.11420(N)    076 50 35.05050(W) AD(       ) 2
 HV7540  NAD 27      -  38 49 08.70601(N)    076 50 36.15342(W) AD(       ) 2
 HV7540  NGVD 29 (07/19/86)   78.0    (m)          256.     (f) VERT ANG       
 HV7540
 HV7540.Superseded values are not recommended for survey control.
 HV7540
 HV7540.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7540.See file dsdata.pdf to determine how the superseded data were derived.
 HV7540
 HV7540_MARKER: I = METAL ROD
 HV7540_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV7540_PROJECTION: RECESSED 3 CENTIMETERS
 HV7540_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7540_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7540+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 HV7540
 HV7540  HISTORY     - Date     Condition        Report By
 HV7540  HISTORY     - 1969     MONUMENTED       WSSC
 HV7540  HISTORY     - 20191028 GOOD             ARCSHE
 HV7540
 HV7540                          STATION DESCRIPTION
 HV7540
 HV7540'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7540'THE STATION IS LOCATED ON THE SOUTH SIDE OF A SERVICE DRIVE
 HV7540'AND THE NORTH SIDE OF ROUTE 4, ABOUT 1.9 MILES SOUTHEAST
 HV7540'OF ROUTE 495 (CAPITAL BELTWAY).
 HV7540'
 HV7540'TO REACH THE STATION FROM THE INTERSECTION OF DOWER HOUSE ROAD
 HV7540'AND THE SERVICE DRIVE, GO EAST ON THE SERVICE DRIVE FOR 1600
 HV7540'FEET TO THE STATION ON THE RIGHT, 150 FEET EAST OF MOORES WAY.
 HV7540'
 HV7540'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7540'AND IS .2 FEET BELOW THE SURFACE.  IT IS 17.6 FEET SOUTH OF THE
 HV7540'SOUTH EDGE OF A MACADAM ROAD, 57.07 FEET EAST OF POLE NO.
 HV7540'834926, 11.27 FEET SOUTHEAST OF AN X CUT IN AN I, BEAM, 14.15
 HV7540'FEET SOUTH OF AN X CUT IN AN I BEAM, AND 27.95 FEET SOUTHWEST
 HV7540'OF AN X CUT IN AN I BEAM.
 HV7540
 HV7540                          STATION RECOVERY (2019)
 HV7540
 HV7540'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HV7540'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1213 ***********************************************************************
 HV1213  DESIGNATION -  1741 WSSC
 HV1213  PID         -  HV1213
 HV1213  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1213  COUNTRY     -  US
 HV1213  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1213
 HV1213                         *CURRENT SURVEY CONTROL
 HV1213  ______________________________________________________________________
 HV1213* NAD 83(1986) POSITION- 38 53 17.     (N) 076 52 46.     (W)   SCALED
 HV1213* NAVD 88 ORTHO HEIGHT -    68.57  (+/-2cm)      225.0   (feet) VERTCON3
 HV1213  ______________________________________________________________________
 HV1213  GEOID HEIGHT    -        -32.410 (meters)                     GEOID18
 HV1213  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1213
 HV1213.The horizontal coordinates were scaled from a map and have
 HV1213.an estimated accuracy of +/- 6 seconds.
 HV1213
 HV1213.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1213.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1213
 HV1213.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1213.GEOID18 height accuracy estimate available here.
 HV1213
 HV1213.The vertical order pertains to the NGVD 29 superseded value.
 HV1213
 HV1213.Click photographs - Photos may exist for this station.
 HV1213
 HV1213;                    North         East    Units  Estimated Accuracy
 HV1213;SPC MD       -   135,590.      410,460.      MT  (+/- 180 meters Scaled)
 HV1213
 HV1213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ369060(NAD 83)
 HV1213
 HV1213                          SUPERSEDED SURVEY CONTROL
 HV1213
 HV1213  NGVD 29 (11/26/84)   68.812  (m)          225.76   (f) ADJUSTED    2 0
 HV1213
 HV1213.Superseded values are not recommended for survey control.
 HV1213
 HV1213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1213.See file dsdata.pdf to determine how the superseded data were derived.
 HV1213
 HV1213_MARKER: DD = SURVEY DISK
 HV1213_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1213_STAMPING: 1741
 HV1213_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1213
 HV1213  HISTORY     - Date     Condition        Report By
 HV1213  HISTORY     - UNK      MONUMENTED       WSSC
 HV1213  HISTORY     - 1944     GOOD             WSSC
 HV1213  HISTORY     - 1978     MARK NOT FOUND   NGS
 HV1213
 HV1213                          STATION DESCRIPTION
 HV1213
 HV1213'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1213'1.3 MI E FROM SEAT PLEASANT.
 HV1213'ON CENTRAL AVENUE, AT THE Y-JUNCTION OF WALKERS MILL ROAD, ON THE
 HV1213'SOUTH SIDE OF THE AVENUE, 73.2 FEET NORTHWEST OF A POLE, AND 34.1
 HV1213'FEET NORTHEAST OF AN 8-INCH WALNUT TREE.
 HV1213
 HV1213                          STATION RECOVERY (1978)
 HV1213
 HV1213'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
 HV1213'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7542 ***********************************************************************
 HV7542  DESIGNATION -  17410
 HV7542  PID         -  HV7542
 HV7542  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7542  COUNTRY     -  US
 HV7542  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7542
 HV7542                         *CURRENT SURVEY CONTROL
 HV7542  ______________________________________________________________________
 HV7542* NAD 83(1993) POSITION- 38 49 14.23226(N) 076 50 49.36658(W)   ADJUSTED
 HV7542* NAVD 88 ORTHO HEIGHT -    63.6   (meters)      209.    (feet) VERTCON3
 HV7542  ______________________________________________________________________
 HV7542  GEOID HEIGHT    -        -32.605 (meters)                     GEOID18
 HV7542  LAPLACE CORR    -         -5.68  (seconds)                    DEFLEC18
 HV7542  HORZ ORDER      -  SECOND
 HV7542
 HV7542.The horizontal coordinates were established by classical geodetic methods
 HV7542.and adjusted by the National Geodetic Survey in November 1994.
 HV7542
 HV7542.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7542.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7542
 HV7542.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7542.GEOID18 height accuracy estimate available here.
 HV7542
 HV7542.Click photographs - Photos may exist for this station.
 HV7542
 HV7542.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7542
 HV7542. The following values were computed from the NAD 83(1993) position.
 HV7542
 HV7542;                    North         East     Units Scale Factor Converg.
 HV7542;SPC MD       -   128,104.680   413,282.555   MT  0.99995031   +0 05 45.6
 HV7542;SPC MD       -   420,290.10  1,355,911.18   sFT  0.99995031   +0 05 45.6
 HV7542;UTM  18      - 4,298,491.448   339,651.961   MT  0.99991662   -1 09 29.3
 HV7542
 HV7542!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7542!SPC MD       -   0.99999514  x   0.99995031  =   0.99994545
 HV7542!UTM  18      -   0.99999514  x   0.99991662  =   0.99991176
 HV7542
 HV7542_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3965198491(NAD 83)
 HV7542
 HV7542                          SUPERSEDED SURVEY CONTROL
 HV7542
 HV7542  NAD 83(1991)-  38 49 14.23170(N)    076 50 49.36681(W) AD(       ) 2
 HV7542  NAD 83(1986)-  38 49 14.22985(N)    076 50 49.37980(W) AD(       ) 2
 HV7542  NAD 27      -  38 49 13.82176(N)    076 50 50.48224(W) AD(       ) 2
 HV7542  NGVD 29 (07/19/86)   63.8    (m)          209.     (f) VERT ANG       
 HV7542
 HV7542.Superseded values are not recommended for survey control.
 HV7542
 HV7542.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7542.See file dsdata.pdf to determine how the superseded data were derived.
 HV7542
 HV7542
 HV7542  HISTORY     - Date     Condition        Report By
 HV7542  HISTORY     - 1969     MONUMENTED       WSSC
 HV7542  HISTORY     - 20191028 MARK NOT FOUND   ARCSHE
 HV7542
 HV7542                          STATION DESCRIPTION
 HV7542
 HV7542'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7542'*THE STATION IS LOCATED ON THE SOUTH SIDE OF A SERVICE DRIVE
 HV7542'AND THE NORTH SIDE OF ROUTE 4, 1.7 MILES SOUTHEAST OF ROUTE 495
 HV7542'(CAPITAL BELTWAY).
 HV7542'
 HV7542'TO REACH THE STATION FROM THE INTERSECTION OF DOWER HOUSE ROAD
 HV7542'AND THE SERVICE DRIVE, GO EAST ON THE SERVICE DRIVE FOR 400
 HV7542'FEET TO THE STATION ON THE RIGHT.
 HV7542'
 HV7542'THE STATION MARK IS A BRASS BOLT IN THE CENTER OF A CONCRETE
 HV7542'SPILLWAY NEAR THE WEST END.
 HV7542
 HV7542                          STATION RECOVERY (2019)
 HV7542
 HV7542'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HV7542'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7539 ***********************************************************************
 HV7539  DESIGNATION -  17411 WSSC 1970
 HV7539  PID         -  HV7539
 HV7539  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7539  COUNTRY     -  US
 HV7539  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7539
 HV7539                         *CURRENT SURVEY CONTROL
 HV7539  ______________________________________________________________________
 HV7539* NAD 83(1993) POSITION- 38 50 45.45515(N) 076 50 28.94542(W)   ADJUSTED
 HV7539* NAVD 88 ORTHO HEIGHT -    73.3   (meters)      240.    (feet) VERTCON3
 HV7539  ______________________________________________________________________
 HV7539  GEOID HEIGHT    -        -32.576 (meters)                     GEOID18
 HV7539  LAPLACE CORR    -         -5.70  (seconds)                    DEFLEC18
 HV7539  HORZ ORDER      -  SECOND
 HV7539
 HV7539.The horizontal coordinates were established by classical geodetic methods
 HV7539.and adjusted by the National Geodetic Survey in November 1994.
 HV7539
 HV7539.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7539.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7539
 HV7539.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7539.GEOID18 height accuracy estimate available here.
 HV7539
 HV7539.Click photographs - Photos may exist for this station.
 HV7539
 HV7539.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7539
 HV7539. The following values were computed from the NAD 83(1993) position.
 HV7539
 HV7539;                    North         East     Units Scale Factor Converg.
 HV7539;SPC MD       -   130,918.394   413,770.273   MT  0.99994998   +0 05 58.4
 HV7539;SPC MD       -   429,521.43  1,357,511.30   sFT  0.99994998   +0 05 58.4
 HV7539;UTM  18      - 4,301,293.713   340,201.142   MT  0.99991445   -1 09 18.7
 HV7539
 HV7539!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7539!SPC MD       -   0.99999362  x   0.99994998  =   0.99994360
 HV7539!UTM  18      -   0.99999362  x   0.99991445  =   0.99990807
 HV7539
 HV7539_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4020101293(NAD 83)
 HV7539
 HV7539                          SUPERSEDED SURVEY CONTROL
 HV7539
 HV7539  NAD 83(1991)-  38 50 45.45461(N)    076 50 28.94577(W) AD(       ) 2
 HV7539  NAD 83(1986)-  38 50 45.45270(N)    076 50 28.95833(W) AD(       ) 2
 HV7539  NAD 27      -  38 50 45.04605(N)    076 50 30.06130(W) AD(       ) 2
 HV7539  NGVD 29 (07/19/86)   73.5    (m)          241.     (f) VERT ANG       
 HV7539
 HV7539.Superseded values are not recommended for survey control.
 HV7539
 HV7539.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7539.See file dsdata.pdf to determine how the superseded data were derived.
 HV7539
 HV7539_MARKER: B = BOLT
 HV7539_SETTING: 0 = UNSPECIFIED SETTING
 HV7539_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7539
 HV7539  HISTORY     - Date     Condition        Report By
 HV7539  HISTORY     - 1969     MONUMENTED       WSSC
 HV7539
 HV7539                          STATION DESCRIPTION
 HV7539
 HV7539'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7539'THE STATION IS LOCATED ON THE NORTH SIDE OF WESTPHALIA ROAD,
 HV7539'1.5 MILES EAST OF THE INTERSECTION OF ROUTE 4 AND ROUTE 495
 HV7539'(CAPTIAL BELTWAY).
 HV7539'
 HV7539'TO REACH THE STATION FROM D ARCY ROAD, GO EAST ON WESTPHALIA
 HV7539'ROAD FOR .30 MILES TO THE STATION ON THE LEFT.
 HV7539'
 HV7539'THE STATION MARK IS A BRASS BOLT IN THE CENTER OF A CONCRETE
 HV7539'HEADWALL, SOUTHWEST OF HOUSE NO. 9504.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7541 ***********************************************************************
 HV7541  DESIGNATION -  17412 WSSC 1970
 HV7541  PID         -  HV7541
 HV7541  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7541  COUNTRY     -  US
 HV7541  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7541
 HV7541                         *CURRENT SURVEY CONTROL
 HV7541  ______________________________________________________________________
 HV7541* NAD 83(1993) POSITION- 38 50 41.16106(N) 076 50 36.60026(W)   ADJUSTED
 HV7541* NAVD 88 ORTHO HEIGHT -    76.5   (meters)      251.    (feet) VERTCON3
 HV7541  ______________________________________________________________________
 HV7541  GEOID HEIGHT    -        -32.572 (meters)                     GEOID18
 HV7541  LAPLACE CORR    -         -5.65  (seconds)                    DEFLEC18
 HV7541  HORZ ORDER      -  SECOND
 HV7541
 HV7541.The horizontal coordinates were established by classical geodetic methods
 HV7541.and adjusted by the National Geodetic Survey in November 1994.
 HV7541
 HV7541.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7541.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7541
 HV7541.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7541.GEOID18 height accuracy estimate available here.
 HV7541
 HV7541.Click photographs - Photos may exist for this station.
 HV7541
 HV7541.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7541
 HV7541. The following values were computed from the NAD 83(1993) position.
 HV7541
 HV7541;                    North         East     Units Scale Factor Converg.
 HV7541;SPC MD       -   130,785.666   413,585.913   MT  0.99994999   +0 05 53.6
 HV7541;SPC MD       -   429,085.97  1,356,906.45   sFT  0.99994999   +0 05 53.6
 HV7541;UTM  18      - 4,301,165.058   340,013.927   MT  0.99991519   -1 09 23.4
 HV7541
 HV7541!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7541!SPC MD       -   0.99999312  x   0.99994999  =   0.99994311
 HV7541!UTM  18      -   0.99999312  x   0.99991519  =   0.99990831
 HV7541
 HV7541_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4001301165(NAD 83)
 HV7541
 HV7541|---------------------------------------------------------------------|
 HV7541| PID    Reference Object                     Distance      Geod. Az  |
 HV7541|                                                           dddmmss.s |
 HV7541| HV7539 17411 WSSC 1970                     227.179 METERS 05421     |
 HV7541| HV7538 17519 WSSC 1970                     327.742 METERS 05559     |
 HV7541|---------------------------------------------------------------------|
 HV7541
 HV7541                          SUPERSEDED SURVEY CONTROL
 HV7541
 HV7541  NAD 83(1991)-  38 50 41.16051(N)    076 50 36.60060(W) AD(       ) 2
 HV7541  NAD 83(1986)-  38 50 41.15863(N)    076 50 36.61318(W) AD(       ) 2
 HV7541  NAD 27      -  38 50 40.75193(N)    076 50 37.71593(W) AD(       ) 2
 HV7541  NGVD 29 (07/19/86)   76.7    (m)          252.     (f) VERT ANG       
 HV7541
 HV7541.Superseded values are not recommended for survey control.
 HV7541
 HV7541.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7541.See file dsdata.pdf to determine how the superseded data were derived.
 HV7541
 HV7541_MARKER: B = BOLT
 HV7541_SETTING: 0 = UNSPECIFIED SETTING
 HV7541_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7541
 HV7541  HISTORY     - Date     Condition        Report By
 HV7541  HISTORY     - 1969     MONUMENTED       WSSC
 HV7541
 HV7541                          STATION DESCRIPTION
 HV7541
 HV7541'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7541'THE STATION IS LOCATED ON THE SOUTH SIDE OF WESTPHALIA ROAD,
 HV7541'1.3 MILES EAST OF THE INTERSECTION OF ROUTE 4 AND ROUTE 495
 HV7541'(CAPTIAL BELTWAY).
 HV7541'
 HV7541'TO REACH THE STATION FROM D ARCY ROAD, GO EAST ON WESTPHALIA
 HV7541'ROAD FOR 800 FEET TO THE STATION ON THE RIGHT.
 HV7541'
 HV7541'THE STATION MARK IS A BRASS BOLT IN A CONCRETE HEADWALL,
 HV7541'NORTHWEST OF HOUSE NO. 1672.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7361 ***********************************************************************
 HV7361  DESIGNATION -  17413 WSSC 1970
 HV7361  PID         -  HV7361
 HV7361  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7361  COUNTRY     -  US
 HV7361  USGS QUAD   -  BENEDICT (2016)
 HV7361
 HV7361                         *CURRENT SURVEY CONTROL
 HV7361  ______________________________________________________________________
 HV7361* NAD 83(1993) POSITION- 38 36 30.05083(N) 076 43 37.96298(W)   ADJUSTED
 HV7361* NAVD 88 ORTHO HEIGHT -    59.1   (meters)      194.    (feet) VERTCON3
 HV7361  ______________________________________________________________________
 HV7361  GEOID HEIGHT    -        -33.421 (meters)                     GEOID18
 HV7361  LAPLACE CORR    -         -3.65  (seconds)                    DEFLEC18
 HV7361  HORZ ORDER      -  SECOND
 HV7361
 HV7361.The horizontal coordinates were established by classical geodetic methods
 HV7361.and adjusted by the National Geodetic Survey in November 1994.
 HV7361
 HV7361.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7361.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7361
 HV7361.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7361.GEOID18 height accuracy estimate available here.
 HV7361
 HV7361.Click photographs - Photos may exist for this station.
 HV7361
 HV7361.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7361
 HV7361. The following values were computed from the NAD 83(1993) position.
 HV7361
 HV7361;                    North         East     Units Scale Factor Converg.
 HV7361;SPC MD       -   104,565.735   423,759.398   MT  0.99996068   +0 10 16.4
 HV7361;SPC MD       -   343,062.75  1,390,283.96   sFT  0.99996068   +0 10 16.4
 HV7361;UTM  18      - 4,274,730.630   349,611.581   MT  0.99987852   -1 04 40.7
 HV7361
 HV7361!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7361!SPC MD       -   0.99999597  x   0.99996068  =   0.99995665
 HV7361!UTM  18      -   0.99999597  x   0.99987852  =   0.99987449
 HV7361
 HV7361:                Primary Azimuth Mark                     Grid Az
 HV7361:SPC MD       -  NAYLOR                                   318 14 43.9
 HV7361:UTM  18      -  NAYLOR                                   319 29 41.0
 HV7361
 HV7361_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4961174730(NAD 83)
 HV7361
 HV7361|---------------------------------------------------------------------|
 HV7361| PID    Reference Object                     Distance      Geod. Az  |
 HV7361|                                                           dddmmss.s |
 HV7361| HV7360 17414 WSSC 1970                     227.897 METERS 17903     |
 HV7361| HV7347 NAYLOR                              APPROX. 1.6 KM 3182500.3 |
 HV7361|---------------------------------------------------------------------|
 HV7361
 HV7361                          SUPERSEDED SURVEY CONTROL
 HV7361
 HV7361  NAD 83(1991)-  38 36 30.05045(N)    076 43 37.96388(W) AD(       ) 2
 HV7361  NAD 83(1986)-  38 36 30.04920(N)    076 43 37.97877(W) AD(       ) 2
 HV7361  NAD 27      -  38 36 29.62044(N)    076 43 39.10255(W) AD(       ) 2
 HV7361  NGVD 29 (07/19/86)   59.4    (m)          195.     (f) VERT ANG       
 HV7361
 HV7361.Superseded values are not recommended for survey control.
 HV7361
 HV7361.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7361.See file dsdata.pdf to determine how the superseded data were derived.
 HV7361
 HV7361_MARKER: I = METAL ROD
 HV7361_SETTING: 0 = UNSPECIFIED SETTING
 HV7361_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7361
 HV7361  HISTORY     - Date     Condition        Report By
 HV7361  HISTORY     - 1969     MONUMENTED       WSSC
 HV7361
 HV7361                          STATION DESCRIPTION
 HV7361
 HV7361'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7361'THE STATION IS LOCATED ABOUT 1.2 MILES SOUTH OF THE INTERSECITON
 HV7361'OF ROUTE 381 AND ROUTE 382, ON THE EAST SIDE OF ROUTE 381.
 HV7361'
 HV7361'TO REACH THE STATION FROM THE INTERSECTION OF ACQUASCO FARM ROAD
 HV7361'AND ROUTE 381, GO .10 MILES SOUTH ON ROUTE 381 TO THE STATION ON
 HV7361'THE LEFT.
 HV7361'
 HV7361'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7361'AND IS .2 FEET BELOW THE SURFACE.  IT IS 37.90 FEET SOUTH OF A
 HV7361'POLE, 81.90 FEET NORTH OF A POLE, 78.88 FEET WEST OF A 16-INCH
 HV7361'PINE, 33.20 FEET WEST OF A 12-INCH PINE, 95.54 FEET NORTHWEST OF A
 HV7361'36-INCH OAK, AND 63.13 FEET NORTHWEST OF A 20-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7360 ***********************************************************************
 HV7360  DESIGNATION -  17414 WSSC 1970
 HV7360  PID         -  HV7360
 HV7360  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7360  COUNTRY     -  US
 HV7360  USGS QUAD   -  BENEDICT (2016)
 HV7360
 HV7360                         *CURRENT SURVEY CONTROL
 HV7360  ______________________________________________________________________
 HV7360* NAD 83(1993) POSITION- 38 36 22.66113(N) 076 43 37.80669(W)   ADJUSTED
 HV7360* NAVD 88 ORTHO HEIGHT -    52.6   (meters)      173.    (feet) VERTCON3
 HV7360  ______________________________________________________________________
 HV7360  GEOID HEIGHT    -        -33.425 (meters)                     GEOID18
 HV7360  LAPLACE CORR    -         -3.63  (seconds)                    DEFLEC18
 HV7360  HORZ ORDER      -  SECOND
 HV7360
 HV7360.The horizontal coordinates were established by classical geodetic methods
 HV7360.and adjusted by the National Geodetic Survey in November 1994.
 HV7360
 HV7360.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7360.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7360
 HV7360.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7360.GEOID18 height accuracy estimate available here.
 HV7360
 HV7360.Click photographs - Photos may exist for this station.
 HV7360
 HV7360.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7360
 HV7360. The following values were computed from the NAD 83(1993) position.
 HV7360
 HV7360;                    North         East     Units Scale Factor Converg.
 HV7360;SPC MD       -   104,337.891   423,763.861   MT  0.99996085   +0 10 16.5
 HV7360;SPC MD       -   342,315.23  1,390,298.60   sFT  0.99996085   +0 10 16.5
 HV7360;UTM  18      - 4,274,502.761   349,611.075   MT  0.99987852   -1 04 40.4
 HV7360
 HV7360!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7360!SPC MD       -   0.99999699  x   0.99996085  =   0.99995784
 HV7360!UTM  18      -   0.99999699  x   0.99987852  =   0.99987551
 HV7360
 HV7360_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4961174502(NAD 83)
 HV7360
 HV7360                          SUPERSEDED SURVEY CONTROL
 HV7360
 HV7360  NAD 83(1991)-  38 36 22.66074(N)    076 43 37.80760(W) AD(       ) 2
 HV7360  NAD 83(1986)-  38 36 22.65950(N)    076 43 37.82248(W) AD(       ) 2
 HV7360  NAD 27      -  38 36 22.23061(N)    076 43 38.94642(W) AD(       ) 2
 HV7360  NGVD 29 (07/19/86)   52.9    (m)          174.     (f) VERT ANG       
 HV7360
 HV7360.Superseded values are not recommended for survey control.
 HV7360
 HV7360.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7360.See file dsdata.pdf to determine how the superseded data were derived.
 HV7360
 HV7360_MARKER: I = METAL ROD
 HV7360_SETTING: 0 = UNSPECIFIED SETTING
 HV7360_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7360
 HV7360  HISTORY     - Date     Condition        Report By
 HV7360  HISTORY     - 1969     MONUMENTED       WSSC
 HV7360
 HV7360                          STATION DESCRIPTION
 HV7360
 HV7360'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7360'THE STATION IS LOCATED ABOUT 1.5 MILES SOUTH OF THE INTERSECTION
 HV7360'OF ROUTE 381 AND ROUTE 381, ON THE WEST SIDE OF ROUTE 381.
 HV7360'
 HV7360'TO REACH THE STATION FROM THE INTERSECTION OF AQUASCO FARM ROAD
 HV7360'AND ROUTE 381, GO .25 MILES SOUTH ON ROUTE 381 TO THE STATION ON
 HV7360'THE RIGHT.
 HV7360'
 HV7360'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7360'AND IS SET FLUSH WITH THE SURFACE.  IT IS 58.45 FEET NORTH OF THE
 HV7360'NORTHEAST CORNER OF ADAMS FUNERAL HOME, 75.65 FEET NORTH OF THE
 HV7360'NORTHWEST CORNER OF ADAMS FUNERAL HOME, 49.94 FEET EAST OF POLE
 HV7360'NO. 2, 44.77 FEET WEST OF C AND P POLE NO. 30, AND 46.73 FEET
 HV7360'NORTHWEST OF THE FAR CORNER OF A CONCRETE WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7623 ***********************************************************************
 HV7623  DESIGNATION -  17415 WSSC 1970
 HV7623  PID         -  HV7623
 HV7623  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7623  COUNTRY     -  US
 HV7623  USGS QUAD   -  ANACOSTIA (2016)
 HV7623
 HV7623                         *CURRENT SURVEY CONTROL
 HV7623  ______________________________________________________________________
 HV7623* NAD 83(1993) POSITION- 38 46 59.38834(N) 076 54 38.16759(W)   ADJUSTED
 HV7623* NAVD 88 ORTHO HEIGHT -    75.5   (meters)      248.    (feet) VERTCON3
 HV7623  ______________________________________________________________________
 HV7623  GEOID HEIGHT    -        -32.508 (meters)                     GEOID18
 HV7623  LAPLACE CORR    -         -4.60  (seconds)                    DEFLEC18
 HV7623  HORZ ORDER      -  SECOND
 HV7623
 HV7623.The horizontal coordinates were established by classical geodetic methods
 HV7623.and adjusted by the National Geodetic Survey in November 1994.
 HV7623
 HV7623.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7623.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7623
 HV7623.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7623.GEOID18 height accuracy estimate available here.
 HV7623
 HV7623.Click photographs - Photos may exist for this station.
 HV7623
 HV7623.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7623
 HV7623. The following values were computed from the NAD 83(1993) position.
 HV7623
 HV7623;                    North         East     Units Scale Factor Converg.
 HV7623;SPC MD       -   123,939.435   407,767.418   MT  0.99995115   +0 03 22.0
 HV7623;SPC MD       -   406,624.63  1,337,816.94   sFT  0.99995115   +0 03 22.0
 HV7623;UTM  18      - 4,294,447.954   334,047.144   MT  0.99993914   -1 11 49.3
 HV7623
 HV7623!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7623!SPC MD       -   0.99999326  x   0.99995115  =   0.99994441
 HV7623!UTM  18      -   0.99999326  x   0.99993914  =   0.99993240
 HV7623
 HV7623:                Primary Azimuth Mark                     Grid Az
 HV7623:SPC MD       -  PAGETTS                                  326 08 42.9
 HV7623:UTM  18      -  PAGETTS                                  327 23 54.2
 HV7623
 HV7623_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3404794447(NAD 83)
 HV7623
 HV7623|---------------------------------------------------------------------|
 HV7623| PID    Reference Object                     Distance      Geod. Az  |
 HV7623|                                                           dddmmss.s |
 HV7623| HV7625 17416 WSSC 1970                     188.463 METERS 24830     |
 HV7623| HV7604 PAGETTS                             APPROX. 1.2 KM 3261204.9 |
 HV7623|---------------------------------------------------------------------|
 HV7623
 HV7623                          SUPERSEDED SURVEY CONTROL
 HV7623
 HV7623  NAD 83(1991)-  38 46 59.38754(N)    076 54 38.16800(W) AD(       ) 2
 HV7623  NAD 83(1986)-  38 46 59.38633(N)    076 54 38.18125(W) AD(       ) 2
 HV7623  NAD 27      -  38 46 58.97640(N)    076 54 39.27758(W) AD(       ) 2
 HV7623  NGVD 29 (07/19/86)   75.7    (m)          248.     (f) VERT ANG       
 HV7623
 HV7623.Superseded values are not recommended for survey control.
 HV7623
 HV7623.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7623.See file dsdata.pdf to determine how the superseded data were derived.
 HV7623
 HV7623_MARKER: I = METAL ROD
 HV7623_SETTING: 0 = UNSPECIFIED SETTING
 HV7623_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7623
 HV7623  HISTORY     - Date     Condition        Report By
 HV7623  HISTORY     - 1969     MONUMENTED       WSSC
 HV7623
 HV7623                          STATION DESCRIPTION
 HV7623
 HV7623'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7623'THE STATION IS LOCATED ON THE SOUTH SIDE OF KIRBY ROAD, SOUTH
 HV7623'OF CAMP SPRINGS, AND ABOUT .70 MILES WEST OF ROUTE 5 (BRANCH
 HV7623'AVENUE).
 HV7623'
 HV7623'TO REACH THE STATION FROM THE INTERSECTION OF RAMBLEWOOD
 HV7623'AVENUE, GO EAST ON KIRBY ROAD FOR 500 FEET TO THE STATION ON
 HV7623'THE RIGHT.
 HV7623'
 HV7623'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7623'AND IS .8 FEET BELOW THE SURFACE.  IT IS 42.62 FEET NORTHEAST
 HV7623'OF THE NORTHEAST CORNER OF HOUSE NO. 5603, 41.17 FEET NORTHWEST
 HV7623'OF THE NORTHWEST CORNER OF HOUSE NO. 5605, 64.39 FEET NORTHWEST
 HV7623'OF THE SOUTHWEST CORNER OF HOUSE NO. 5605, 88.32 FEET EAST OF
 HV7623'POLE NO. 862164, 71.40 FEET WEST OF POLE NO. 862165 AND 49.80
 HV7623'FEET SOUTH OF A POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7625 ***********************************************************************
 HV7625  DESIGNATION -  17416 WSSC 1970
 HV7625  PID         -  HV7625
 HV7625  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7625  COUNTRY     -  US
 HV7625  USGS QUAD   -  ANACOSTIA (2016)
 HV7625
 HV7625                         *CURRENT SURVEY CONTROL
 HV7625  ______________________________________________________________________
 HV7625* NAD 83(1993) POSITION- 38 46 57.14753(N) 076 54 45.43212(W)   ADJUSTED
 HV7625* NAVD 88 ORTHO HEIGHT -    73.8   (meters)      242.    (feet) VERTCON3
 HV7625  ______________________________________________________________________
 HV7625  GEOID HEIGHT    -        -32.504 (meters)                     GEOID18
 HV7625  LAPLACE CORR    -         -4.57  (seconds)                    DEFLEC18
 HV7625  HORZ ORDER      -  SECOND
 HV7625
 HV7625.The horizontal coordinates were established by classical geodetic methods
 HV7625.and adjusted by the National Geodetic Survey in November 1994.
 HV7625
 HV7625.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7625.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7625
 HV7625.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7625.GEOID18 height accuracy estimate available here.
 HV7625
 HV7625.Click photographs - Photos may exist for this station.
 HV7625
 HV7625.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7625
 HV7625. The following values were computed from the NAD 83(1993) position.
 HV7625
 HV7625;                    North         East     Units Scale Factor Converg.
 HV7625;SPC MD       -   123,870.170   407,592.155   MT  0.99995117   +0 03 17.4
 HV7625;SPC MD       -   406,397.38  1,337,241.93   sFT  0.99995117   +0 03 17.4
 HV7625;UTM  18      - 4,294,382.539   333,870.410   MT  0.99993986   -1 11 53.8
 HV7625
 HV7625!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7625!SPC MD       -   0.99999353  x   0.99995117  =   0.99994470
 HV7625!UTM  18      -   0.99999353  x   0.99993986  =   0.99993339
 HV7625
 HV7625_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3387094382(NAD 83)
 HV7625
 HV7625                          SUPERSEDED SURVEY CONTROL
 HV7625
 HV7625  NAD 83(1991)-  38 46 57.14672(N)    076 54 45.43253(W) AD(       ) 2
 HV7625  NAD 83(1986)-  38 46 57.14553(N)    076 54 45.44579(W) AD(       ) 2
 HV7625  NAD 27      -  38 46 56.73557(N)    076 54 46.54189(W) AD(       ) 2
 HV7625  NGVD 29 (07/19/86)   74.0    (m)          243.     (f) VERT ANG       
 HV7625
 HV7625.Superseded values are not recommended for survey control.
 HV7625
 HV7625.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7625.See file dsdata.pdf to determine how the superseded data were derived.
 HV7625
 HV7625_MARKER: I = METAL ROD
 HV7625_SETTING: 0 = UNSPECIFIED SETTING
 HV7625_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7625
 HV7625  HISTORY     - Date     Condition        Report By
 HV7625  HISTORY     - 1969     MONUMENTED       WSSC
 HV7625
 HV7625                          STATION DESCRIPTION
 HV7625
 HV7625'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7625'THE STATION IS LOCATED ON THE SOUTHEAST CORNER OF THE INTERSECTION
 HV7625'OF KIRBY ROAD AND RAMBLEWOOD AVENUE, SOUTH OF CAMP SPRINGS AND
 HV7625'ABOUT .90 MILES WEST OF ROUTE 5 (BRANCH AVENUE).
 HV7625'
 HV7625'TO REACH THE STATION FROM ROUTE 5, GO WEST ON KIRBY ROAD FOR
 HV7625'ABOUT .90 MILES TO THE STATION ON THE LEFT.
 HV7625'
 HV7625'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7625'AND IS .3 FEET BELOW THE SURFACE.  IT IS 1.03 FEET SOUTH OF THE
 HV7625'BACK EDGE OF A CURB AND 1.05 FEET EAST OF THE SOUTHEAST CORNER
 HV7625'OF A CATCH BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7628 ***********************************************************************
 HV7628  DESIGNATION -  17417 WSSC 1970
 HV7628  PID         -  HV7628
 HV7628  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7628  COUNTRY     -  US
 HV7628  USGS QUAD   -  ANACOSTIA (2016)
 HV7628
 HV7628                         *CURRENT SURVEY CONTROL
 HV7628  ______________________________________________________________________
 HV7628* NAD 83(1993) POSITION- 38 48 06.86431(N) 076 55 25.14101(W)   ADJUSTED
 HV7628* NAVD 88 ORTHO HEIGHT -    75.3   (meters)      247.    (feet) VERTCON3
 HV7628  ______________________________________________________________________
 HV7628  GEOID HEIGHT    -        -32.442 (meters)                     GEOID18
 HV7628  LAPLACE CORR    -         -4.13  (seconds)                    DEFLEC18
 HV7628  HORZ ORDER      -  SECOND
 HV7628
 HV7628.The horizontal coordinates were established by classical geodetic methods
 HV7628.and adjusted by the National Geodetic Survey in November 1994.
 HV7628
 HV7628.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7628.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7628
 HV7628.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7628.GEOID18 height accuracy estimate available here.
 HV7628
 HV7628.Click photographs - Photos may exist for this station.
 HV7628
 HV7628.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7628
 HV7628. The following values were computed from the NAD 83(1993) position.
 HV7628
 HV7628;                    North         East     Units Scale Factor Converg.
 HV7628;SPC MD       -   126,019.028   406,631.976   MT  0.99995068   +0 02 52.5
 HV7628;SPC MD       -   413,447.43  1,334,091.74   sFT  0.99995068   +0 02 52.5
 HV7628;UTM  18      - 4,296,551.866   332,957.472   MT  0.99994361   -1 12 20.5
 HV7628
 HV7628!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7628!SPC MD       -   0.99999328  x   0.99995068  =   0.99994396
 HV7628!UTM  18      -   0.99999328  x   0.99994361  =   0.99993689
 HV7628
 HV7628:                Primary Azimuth Mark                     Grid Az
 HV7628:SPC MD       -  PAGETTS                                  157 07 59.2
 HV7628:UTM  18      -  PAGETTS                                  158 23 12.2
 HV7628
 HV7628_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3295796551(NAD 83)
 HV7628
 HV7628|---------------------------------------------------------------------|
 HV7628| PID    Reference Object                     Distance      Geod. Az  |
 HV7628|                                                           dddmmss.s |
 HV7628| HV7604 PAGETTS                             APPROX. 1.1 KM 1571051.7 |
 HV7628| HV7629 17418 WSSC 1970                     APPROX. 0.5 KM 1970453.2 |
 HV7628| HV7612 CAMP SPRINGS BETHANY CH SPIRE       APPROX. 1.4 KM 2094801.4 |
 HV7628|---------------------------------------------------------------------|
 HV7628
 HV7628                          SUPERSEDED SURVEY CONTROL
 HV7628
 HV7628  NAD 83(1991)-  38 48 06.86347(N)    076 55 25.14154(W) AD(       ) 2
 HV7628  NAD 83(1986)-  38 48 06.86237(N)    076 55 25.15448(W) AD(       ) 2
 HV7628  NAD 27      -  38 48 06.45276(N)    076 55 26.24858(W) AD(       ) 2
 HV7628  NGVD 29 (07/19/86)   75.5    (m)          248.     (f) VERT ANG       
 HV7628
 HV7628.Superseded values are not recommended for survey control.
 HV7628
 HV7628.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7628.See file dsdata.pdf to determine how the superseded data were derived.
 HV7628
 HV7628_MARKER: I = METAL ROD
 HV7628_SETTING: 0 = UNSPECIFIED SETTING
 HV7628_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7628
 HV7628  HISTORY     - Date     Condition        Report By
 HV7628  HISTORY     - 1969     MONUMENTED       WSSC
 HV7628
 HV7628                          STATION DESCRIPTION
 HV7628
 HV7628'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7628'THE STATION IS LOCATED WEST OF ROUTE 5 (BRANCH AVENUE) AND .65
 HV7628'MILES NORTHEAST OF PADGETTS CORNER.
 HV7628'
 HV7628'TO REACH THE STATION FROM THE INTERSECTION OF MIDDLETON LANE
 HV7628'AND BRINKLEY ROAD, GO WEST ON BRINKLEY ROAD FOR 200 FEET TO THE
 HV7628'STATION ON THE LEFT.
 HV7628'
 HV7628'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7628'AND IS .1 FOOT BELOW THE SURFACE.  IT IS 30.83 FEET SOUTHEAST
 HV7628'OF A FIRE HYDRANT, 0.70 FEET SOUTH OF THE SOUTH EDGE OF A CONCRETE
 HV7628'WALK, 1.00 FOOT WEST OF A CURB AND IS AT THE WEST ENTRANCE OF
 HV7628'TANEY JR. HIGH SCHOOL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7629 ***********************************************************************
 HV7629  DESIGNATION -  17418 WSSC 1970
 HV7629  PID         -  HV7629
 HV7629  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7629  COUNTRY     -  US
 HV7629  USGS QUAD   -  ANACOSTIA (2016)
 HV7629
 HV7629                         *CURRENT SURVEY CONTROL
 HV7629  ______________________________________________________________________
 HV7629* NAD 83(1993) POSITION- 38 47 51.16065(N) 076 55 31.30734(W)   ADJUSTED
 HV7629* NAVD 88 ORTHO HEIGHT -    70.9   (meters)      233.    (feet) VERTCON3
 HV7629  ______________________________________________________________________
 HV7629  GEOID HEIGHT    -        -32.446 (meters)                     GEOID18
 HV7629  LAPLACE CORR    -         -4.13  (seconds)                    DEFLEC18
 HV7629  HORZ ORDER      -  SECOND
 HV7629
 HV7629.The horizontal coordinates were established by classical geodetic methods
 HV7629.and adjusted by the National Geodetic Survey in November 1994.
 HV7629
 HV7629.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7629.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7629
 HV7629.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7629.GEOID18 height accuracy estimate available here.
 HV7629
 HV7629.Click photographs - Photos may exist for this station.
 HV7629
 HV7629.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7629
 HV7629. The following values were computed from the NAD 83(1993) position.
 HV7629
 HV7629;                    North         East     Units Scale Factor Converg.
 HV7629;SPC MD       -   125,534.682   406,483.587   MT  0.99995078   +0 02 48.6
 HV7629;SPC MD       -   411,858.37  1,333,604.90   sFT  0.99995078   +0 02 48.6
 HV7629;UTM  18      - 4,296,070.886   332,798.524   MT  0.99994426   -1 12 24.0
 HV7629
 HV7629!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7629!SPC MD       -   0.99999397  x   0.99995078  =   0.99994475
 HV7629!UTM  18      -   0.99999397  x   0.99994426  =   0.99993823
 HV7629
 HV7629_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3279896070(NAD 83)
 HV7629
 HV7629                          SUPERSEDED SURVEY CONTROL
 HV7629
 HV7629  NAD 83(1991)-  38 47 51.15980(N)    076 55 31.30784(W) AD(       ) 2
 HV7629  NAD 83(1986)-  38 47 51.15872(N)    076 55 31.32085(W) AD(       ) 2
 HV7629  NAD 27      -  38 47 50.74889(N)    076 55 32.41491(W) AD(       ) 2
 HV7629  NGVD 29 (07/19/86)   71.1    (m)          233.     (f) VERT ANG       
 HV7629
 HV7629.Superseded values are not recommended for survey control.
 HV7629
 HV7629.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7629.See file dsdata.pdf to determine how the superseded data were derived.
 HV7629
 HV7629_MARKER: I = METAL ROD
 HV7629_SETTING: 0 = UNSPECIFIED SETTING
 HV7629_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7629
 HV7629  HISTORY     - Date     Condition        Report By
 HV7629  HISTORY     - 1969     MONUMENTED       WSSC
 HV7629
 HV7629                          STATION DESCRIPTION
 HV7629
 HV7629'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7629'THE STATION IS LOCATED WEST OF ROUTE 5 (BRANCH AVENUE) AND ABOUT
 HV7629'.30 MILES NORTHEAST OF PADGETTS CORNER.
 HV7629'
 HV7629'TO REACH THE STATION FROM THE INTERSECTION OF BRINKLEY ROAD
 HV7629'AND SUMMERHILL DRIVE, GO 1800 FEET SOUTH ON SUMMERHILL DRIVE TO
 HV7629'THE STATION ON THE LEFT.
 HV7629'
 HV7629'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7629'AND IS .3 FEET BELOW THE SURFACE.  IT IS 73.17 FEET EAST OF THE
 HV7629'NORTHEAST CORNER OF HOUSE NO. 6701, 73.32 FEET EAST OF THE
 HV7629'SOUTHEAST CORNER OF HOUSE NO. 6701, 86.24 FEET SOUTH OF A FIRE
 HV7629'HYDRANT, 15.50 FEET WEST OF THE CORNER OF A WIRE FENCE AND 0.80
 HV7629'FEET EAST OF THE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7622 ***********************************************************************
 HV7622  DESIGNATION -  17419 WSSC 1970
 HV7622  PID         -  HV7622
 HV7622  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7622  COUNTRY     -  US
 HV7622  USGS QUAD   -  ANACOSTIA (2016)
 HV7622
 HV7622                         *CURRENT SURVEY CONTROL
 HV7622  ______________________________________________________________________
 HV7622* NAD 83(1993) POSITION- 38 45 48.13320(N) 076 54 30.59042(W)   ADJUSTED
 HV7622* NAVD 88 ORTHO HEIGHT -    76.9   (meters)      252.    (feet) VERTCON3
 HV7622  ______________________________________________________________________
 HV7622  GEOID HEIGHT    -        -32.554 (meters)                     GEOID18
 HV7622  LAPLACE CORR    -         -4.74  (seconds)                    DEFLEC18
 HV7622  HORZ ORDER      -  SECOND
 HV7622
 HV7622.The horizontal coordinates were established by classical geodetic methods
 HV7622.and adjusted by the National Geodetic Survey in November 1994.
 HV7622
 HV7622.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7622.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7622
 HV7622.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7622.GEOID18 height accuracy estimate available here.
 HV7622
 HV7622.Click photographs - Photos may exist for this station.
 HV7622
 HV7622.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7622
 HV7622. The following values were computed from the NAD 83(1993) position.
 HV7622
 HV7622;                    North         East     Units Scale Factor Converg.
 HV7622;SPC MD       -   121,742.470   407,952.496   MT  0.99995176   +0 03 26.7
 HV7622;SPC MD       -   399,416.75  1,338,424.15   sFT  0.99995176   +0 03 26.7
 HV7622;UTM  18      - 4,292,247.495   334,184.138   MT  0.99993858   -1 11 42.7
 HV7622
 HV7622!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7622!SPC MD       -   0.99999305  x   0.99995176  =   0.99994481
 HV7622!UTM  18      -   0.99999305  x   0.99993858  =   0.99993163
 HV7622
 HV7622:                Primary Azimuth Mark                     Grid Az
 HV7622:SPC MD       -  PAGETTS                                  344 45 47.6
 HV7622:UTM  18      -  PAGETTS                                  346 00 57.0
 HV7622
 HV7622_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3418492247(NAD 83)
 HV7622
 HV7622|---------------------------------------------------------------------|
 HV7622| PID    Reference Object                     Distance      Geod. Az  |
 HV7622|                                                           dddmmss.s |
 HV7622| HV7600 CLINTON WSSC TANK                   APPROX. 0.6 KM 0591353.5 |
 HV7622| HV7604 PAGETTS                             APPROX. 3.4 KM 3444914.3 |
 HV7622|---------------------------------------------------------------------|
 HV7622
 HV7622                          SUPERSEDED SURVEY CONTROL
 HV7622
 HV7622  NAD 83(1991)-  38 45 48.13242(N)    076 54 30.59072(W) AD(       ) 2
 HV7622  NAD 83(1986)-  38 45 48.13118(N)    076 54 30.60429(W) AD(       ) 2
 HV7622  NAD 27      -  38 45 47.72014(N)    076 54 31.70124(W) AD(       ) 2
 HV7622  NGVD 29 (07/19/86)   77.1    (m)          253.     (f) VERT ANG       
 HV7622
 HV7622.Superseded values are not recommended for survey control.
 HV7622
 HV7622.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7622.See file dsdata.pdf to determine how the superseded data were derived.
 HV7622
 HV7622_MARKER: I = METAL ROD
 HV7622_SETTING: 0 = UNSPECIFIED SETTING
 HV7622_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7622
 HV7622  HISTORY     - Date     Condition        Report By
 HV7622  HISTORY     - 1969     MONUMENTED       WSSC
 HV7622
 HV7622                          STATION DESCRIPTION
 HV7622
 HV7622'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7622'THE STATION IS LOCATED ABOUT .50 MILES WEST OF CLINTON ON THE
 HV7622'NORTH SIDE OF ROUTE 223 (PISCATAWAY ROAD).
 HV7622'
 HV7622'TO REACH THE STATION FROM ROUTE 5 (BRANCH AVENUE), GO SOUTHWEST
 HV7622'ON ROUTE 223 FOR 1.25 MILES TO THE STATION ON THE RIGHT.
 HV7622'
 HV7622'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7622'AND IS .6 FEET BELOW THE SURFACE.  IT IS 37.66 FEET WEST OF A
 HV7622'FIRE HYDRANT, 33.00 FEET SOUTHEAST OF C AND P POLE NO. P-305,
 HV7622'61.87 FEET NORTH OF PEPCO POLE NO. 813116 AND 9.7 FEET NORTH OF
 HV7622'THE NORTH EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2785 ***********************************************************************
 JV2785  DESIGNATION -  1742 WSSC
 JV2785  PID         -  JV2785
 JV2785  STATE/COUNTY-  MD/MONTGOMERY
 JV2785  COUNTRY     -  US
 JV2785  USGS QUAD   -  KENSINGTON (2016)
 JV2785
 JV2785                         *CURRENT SURVEY CONTROL
 JV2785  ______________________________________________________________________
 JV2785* NAD 83(1986) POSITION- 39 00 34.     (N) 077 02 27.     (W)   SCALED
 JV2785* NAVD 88 ORTHO HEIGHT -   108.87  (+/-2cm)      357.2   (feet) VERTCON3
 JV2785  ______________________________________________________________________
 JV2785  GEOID HEIGHT    -        -31.940 (meters)                     GEOID18
 JV2785  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2785
 JV2785.The horizontal coordinates were scaled from a map and have
 JV2785.an estimated accuracy of +/- 6 seconds.
 JV2785
 JV2785.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2785.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2785
 JV2785.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2785.GEOID18 height accuracy estimate available here.
 JV2785
 JV2785.The vertical order pertains to the NGVD 29 superseded value.
 JV2785
 JV2785.Click photographs - Photos may exist for this station.
 JV2785
 JV2785;                    North         East    Units  Estimated Accuracy
 JV2785;SPC MD       -   149,060.      396,460.      MT  (+/- 180 meters Scaled)
 JV2785
 JV2785_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ232198(NAD 83)
 JV2785
 JV2785                          SUPERSEDED SURVEY CONTROL
 JV2785
 JV2785  NGVD 29 (11/26/84)  109.083  (m)          357.88   (f) ADJUSTED    2 0
 JV2785
 JV2785.Superseded values are not recommended for survey control.
 JV2785
 JV2785.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2785.See file dsdata.pdf to determine how the superseded data were derived.
 JV2785
 JV2785_MARKER: DD = SURVEY DISK
 JV2785_SETTING: 0 = UNSPECIFIED SETTING
 JV2785_STAMPING: 1742
 JV2785_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2785
 JV2785  HISTORY     - Date     Condition        Report By
 JV2785  HISTORY     - UNK      MONUMENTED       WSSC
 JV2785  HISTORY     - 1939     GOOD             WSSC
 JV2785
 JV2785                          STATION DESCRIPTION
 JV2785
 JV2785'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2785'AT MONTGOMERY HILLS.
 JV2785'ON GEORGIA AVENUE, IN THE SOUTHWEST CORNER OF THE INTERSECTION
 JV2785'OF SEMINARY ROAD, 57.7 FEET WEST OF THE CENTERLINE OF GEORGIA
 JV2785'AVENUE, AND IN THE PARKING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7627 ***********************************************************************
 HV7627  DESIGNATION -  17420 WSSC 1970
 HV7627  PID         -  HV7627
 HV7627  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7627  COUNTRY     -  US
 HV7627  USGS QUAD   -  ANACOSTIA (2016)
 HV7627
 HV7627                         *CURRENT SURVEY CONTROL
 HV7627  ______________________________________________________________________
 HV7627* NAD 83(1993) POSITION- 38 45 39.83230(N) 076 54 58.75054(W)   ADJUSTED
 HV7627* NAVD 88 ORTHO HEIGHT -    77.9   (meters)      256.    (feet) VERTCON3
 HV7627  ______________________________________________________________________
 HV7627  GEOID HEIGHT    -        -32.540 (meters)                     GEOID18
 HV7627  LAPLACE CORR    -         -4.56  (seconds)                    DEFLEC18
 HV7627  HORZ ORDER      -  SECOND
 HV7627
 HV7627.The horizontal coordinates were established by classical geodetic methods
 HV7627.and adjusted by the National Geodetic Survey in November 1994.
 HV7627
 HV7627.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7627.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7627
 HV7627.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7627.GEOID18 height accuracy estimate available here.
 HV7627
 HV7627.Click photographs - Photos may exist for this station.
 HV7627
 HV7627.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7627
 HV7627. The following values were computed from the NAD 83(1993) position.
 HV7627
 HV7627;                    North         East     Units Scale Factor Converg.
 HV7627;SPC MD       -   121,485.860   407,272.898   MT  0.99995184   +0 03 09.1
 HV7627;SPC MD       -   398,574.86  1,336,194.50   sFT  0.99995184   +0 03 09.1
 HV7627;UTM  18      - 4,292,005.806   333,499.102   MT  0.99994139   -1 12 00.1
 HV7627
 HV7627!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7627!SPC MD       -   0.99999289  x   0.99995184  =   0.99994473
 HV7627!UTM  18      -   0.99999289  x   0.99994139  =   0.99993428
 HV7627
 HV7627_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3349992005(NAD 83)
 HV7627
 HV7627                          SUPERSEDED SURVEY CONTROL
 HV7627
 HV7627  NAD 83(1991)-  38 45 39.83149(N)    076 54 58.75083(W) AD(       ) 2
 HV7627  NAD 83(1986)-  38 45 39.83033(N)    076 54 58.76444(W) AD(       ) 2
 HV7627  NAD 27      -  38 45 39.41921(N)    076 54 59.86053(W) AD(       ) 2
 HV7627  NGVD 29 (07/19/86)   78.1    (m)          256.     (f) VERT ANG       
 HV7627
 HV7627.Superseded values are not recommended for survey control.
 HV7627
 HV7627.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7627.See file dsdata.pdf to determine how the superseded data were derived.
 HV7627
 HV7627_MARKER: I = METAL ROD
 HV7627_SETTING: 0 = UNSPECIFIED SETTING
 HV7627_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7627
 HV7627  HISTORY     - Date     Condition        Report By
 HV7627  HISTORY     - 1969     MONUMENTED       WSSC
 HV7627
 HV7627                          STATION DESCRIPTION
 HV7627
 HV7627'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7627'THE STATION IS LOCATED ABOUT .90 MILES WEST OF CLINTON, 75 FEET
 HV7627'NORTH OF ROUTE 223 (PISCATAWAY ROAD).
 HV7627'
 HV7627'TO REACH THE STATION FROM ROUTE 223, GO NORTH ON GREENFIELD LANE
 HV7627'FOR 75 FEET TO THE STATION ON THE RIGHT.
 HV7627'
 HV7627'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7627'AND IS .2 FEET BELOW THE SURFACE.  IT IS 67.43 FEET EAST OF PEPCO
 HV7627'POLE NO. 863954, 64.14 FEET EAST OF C AND P POLE NO. 292, 50.87
 HV7627'FEET NORTHWEST OF C AND P POLE 15385, 56.20 FEET SOUTHWEST OF THE
 HV7627'SOUTHWEST CORNER OF HOUSE NO. 9214, AND 69.65 FEET SOUTHWEST OF
 HV7627'THE SOUTHEAST CORNER OF HOUSE NO. 9214.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7445 ***********************************************************************
 HV7445  DESIGNATION -  17421 WSSC 1970
 HV7445  PID         -  HV7445
 HV7445  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7445  COUNTRY     -  US
 HV7445  USGS QUAD   -  PISCATAWAY (2016)
 HV7445
 HV7445                         *CURRENT SURVEY CONTROL
 HV7445  ______________________________________________________________________
 HV7445* NAD 83(1993) POSITION- 38 43 05.14401(N) 076 56 00.93505(W)   ADJUSTED
 HV7445* NAVD 88 ORTHO HEIGHT -    69.6   (meters)      228.    (feet) VERTCON3
 HV7445  ______________________________________________________________________
 HV7445  GEOID HEIGHT    -        -32.603 (meters)                     GEOID18
 HV7445  LAPLACE CORR    -         -4.81  (seconds)                    DEFLEC18
 HV7445  HORZ ORDER      -  SECOND
 HV7445
 HV7445.The horizontal coordinates were established by classical geodetic methods
 HV7445.and adjusted by the National Geodetic Survey in November 1994.
 HV7445
 HV7445.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7445.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7445
 HV7445.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7445.GEOID18 height accuracy estimate available here.
 HV7445
 HV7445.Click photographs - Photos may exist for this station.
 HV7445
 HV7445.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7445
 HV7445. The following values were computed from the NAD 83(1993) position.
 HV7445
 HV7445;                    North         East     Units Scale Factor Converg.
 HV7445;SPC MD       -   116,714.846   405,775.082   MT  0.99995362   +0 02 30.0
 HV7445;SPC MD       -   382,921.96  1,331,280.41   sFT  0.99995362   +0 02 30.0
 HV7445;UTM  18      - 4,287,268.694   331,897.412   MT  0.99994799   -1 12 35.0
 HV7445
 HV7445!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7445!SPC MD       -   0.99999420  x   0.99995362  =   0.99994782
 HV7445!UTM  18      -   0.99999420  x   0.99994799  =   0.99994219
 HV7445
 HV7445_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3189787268(NAD 83)
 HV7445
 HV7445                          SUPERSEDED SURVEY CONTROL
 HV7445
 HV7445  NAD 83(1991)-  38 43 05.14307(N)    076 56 00.93563(W) AD(       ) 2
 HV7445  NAD 83(1986)-  38 43 05.14235(N)    076 56 00.94937(W) AD(       ) 2
 HV7445  NAD 27      -  38 43 04.72811(N)    076 56 02.04495(W) AD(       ) 2
 HV7445  NGVD 29 (07/19/86)   69.8    (m)          229.     (f) VERT ANG       
 HV7445
 HV7445.Superseded values are not recommended for survey control.
 HV7445
 HV7445.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7445.See file dsdata.pdf to determine how the superseded data were derived.
 HV7445
 HV7445_MARKER: I = METAL ROD
 HV7445_SETTING: 0 = UNSPECIFIED SETTING
 HV7445_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7445
 HV7445  HISTORY     - Date     Condition        Report By
 HV7445  HISTORY     - 1969     MONUMENTED       WSSC
 HV7445
 HV7445                          STATION DESCRIPTION
 HV7445
 HV7445'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7445'THE STATION IS LOCATED EAST OF FORT WASHINGTON FOREST AND ABOUT
 HV7445'2.3 MILES NORTHWEST OF DANVILLE ON THE SOUTHEAST SIDE OF THRIFT
 HV7445'ROAD, 1.2 MILES SOUTHWEST OF TIPPETT ROAD.
 HV7445'
 HV7445'TO REACH THE STATION FROM THE INTERSECTION OF TIPPETT ROAD, GO
 HV7445'SOUTHWEST ON THRIFT ROAD FOR 1.2 MILES TO THE STATION ON THE LEFT.
 HV7445'
 HV7445'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7445'AND IS SET FLUSH WITH THE SURFACE.  IT IS 47.26 FEET EAST OF PEPCO
 HV7445'POLE NO. 835516, 13.35 FEET NORTH OF AN 8-INCH PEAR, 61.45 FEET
 HV7445'WEST OF THE NORTHWEST CORNER OF A WHITE TWO STORY HOUSE, 44.21
 HV7445'FEET WEST OF THE SOUTHWEST CORNER OF A WHITE TWO STORY HOUSE,
 HV7445'45.70 FEET SOUTHEAST OF A 26-INCH SASSAFRAS, 20.25 FEET WEST OF
 HV7445'A 16-INCH CATAPLA, AND 23.28 FEET NORTHWEST OF A 14-INCH
 HV7445'CATAPLA.
 HV7445'
 HV7445'NOTE--USE CONCRETE FOUNDATIONS AND FACE OF ALL TREES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7441 ***********************************************************************
 HV7441  DESIGNATION -  17422 WSSC 1970
 HV7441  PID         -  HV7441
 HV7441  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7441  COUNTRY     -  US
 HV7441  USGS QUAD   -  PISCATAWAY (2016)
 HV7441
 HV7441                         *CURRENT SURVEY CONTROL
 HV7441  ______________________________________________________________________
 HV7441* NAD 83(1993) POSITION- 38 42 23.25283(N) 076 55 10.43560(W)   ADJUSTED
 HV7441* NAVD 88 ORTHO HEIGHT -    51.1   (meters)      168.    (feet) VERTCON3
 HV7441  ______________________________________________________________________
 HV7441  GEOID HEIGHT    -        -32.667 (meters)                     GEOID18
 HV7441  LAPLACE CORR    -         -5.03  (seconds)                    DEFLEC18
 HV7441  HORZ ORDER      -  SECOND
 HV7441
 HV7441.The horizontal coordinates were established by classical geodetic methods
 HV7441.and adjusted by the National Geodetic Survey in November 1994.
 HV7441
 HV7441.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7441.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7441
 HV7441.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7441.GEOID18 height accuracy estimate available here.
 HV7441
 HV7441.Click photographs - Photos may exist for this station.
 HV7441
 HV7441.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7441
 HV7441. The following values were computed from the NAD 83(1993) position.
 HV7441
 HV7441;                    North         East     Units Scale Factor Converg.
 HV7441;SPC MD       -   115,424.126   406,996.133   MT  0.99995419   +0 03 01.7
 HV7441;SPC MD       -   378,687.32  1,335,286.48   sFT  0.99995419   +0 03 01.7
 HV7441;UTM  18      - 4,285,951.629   333,089.977   MT  0.99994307   -1 12 02.3
 HV7441
 HV7441!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7441!SPC MD       -   0.99999711  x   0.99995419  =   0.99995130
 HV7441!UTM  18      -   0.99999711  x   0.99994307  =   0.99994018
 HV7441
 HV7441:                Primary Azimuth Mark                     Grid Az
 HV7441:SPC MD       -  PARKER                                   295 42 43.9
 HV7441:UTM  18      -  PARKER                                   296 57 47.9
 HV7441
 HV7441_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3308985951(NAD 83)
 HV7441
 HV7441|---------------------------------------------------------------------|
 HV7441| PID    Reference Object                     Distance      Geod. Az  |
 HV7441|                                                           dddmmss.s |
 HV7441| HV7426 PARKER                              APPROX. 3.3 KM 2954545.6 |
 HV7441|---------------------------------------------------------------------|
 HV7441
 HV7441                          SUPERSEDED SURVEY CONTROL
 HV7441
 HV7441  NAD 83(1991)-  38 42 23.25195(N)    076 55 10.43610(W) AD(       ) 2
 HV7441  NAD 83(1986)-  38 42 23.25109(N)    076 55 10.45002(W) AD(       ) 2
 HV7441  NAD 27      -  38 42 22.83594(N)    076 55 11.54751(W) AD(       ) 2
 HV7441  NGVD 29 (07/19/86)   51.3    (m)          168.     (f) VERT ANG       
 HV7441
 HV7441.Superseded values are not recommended for survey control.
 HV7441
 HV7441.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7441.See file dsdata.pdf to determine how the superseded data were derived.
 HV7441
 HV7441_MARKER: I = METAL ROD
 HV7441_SETTING: 0 = UNSPECIFIED SETTING
 HV7441_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7441
 HV7441  HISTORY     - Date     Condition        Report By
 HV7441  HISTORY     - 1969     MONUMENTED       WSSC
 HV7441
 HV7441                          STATION DESCRIPTION
 HV7441
 HV7441'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7441'THE STATION IS LOCATED ABOUT 2.3 MILES WEST OF TB AND ABOUT 1.5
 HV7441'MILES NORTH OF DANVILLE ON THE NORTH SIDE OF FLORAL PARK ROAD.
 HV7441'
 HV7441'TO REACH THE STATION FROM THE INTERSECTION OF BURROUGHS ROAD,
 HV7441'GO WEST ON FLORAL PARK ROAD FOR 275 FEET TO THE STATION ON THE
 HV7441'RIGHT.
 HV7441'
 HV7441'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7441'AND IS .3 FEET BELOW THE SURFACE.  IT IS 75.02 FEET NORTHWEST OF
 HV7441'A POLE, 9.30 FEET WEST OF A POLE, 63.26 FEET SOUTHEAST OF THE
 HV7441'NORTHEAST CORNER OF A GARAGE, 73.62 FEET EAST OF THE NORTHEAST
 HV7441'CORNER OF A HOUSE, AND 77.13 FEET EAST OF THE NORTHEAST CORNER
 HV7441'OF A STEP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7632 ***********************************************************************
 HV7632  DESIGNATION -  17423 WSSC 1970
 HV7632  PID         -  HV7632
 HV7632  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7632  COUNTRY     -  US
 HV7632  USGS QUAD   -  ANACOSTIA (2016)
 HV7632
 HV7632                         *CURRENT SURVEY CONTROL
 HV7632  ______________________________________________________________________
 HV7632* NAD 83(1993) POSITION- 38 48 28.61668(N) 076 57 22.00642(W)   ADJUSTED
 HV7632* NAVD 88 ORTHO HEIGHT -    74.5   (meters)      244.    (feet) VERTCON3
 HV7632  ______________________________________________________________________
 HV7632  GEOID HEIGHT    -        -32.364 (meters)                     GEOID18
 HV7632  LAPLACE CORR    -         -3.83  (seconds)                    DEFLEC18
 HV7632  HORZ ORDER      -  SECOND
 HV7632
 HV7632.The horizontal coordinates were established by classical geodetic methods
 HV7632.and adjusted by the National Geodetic Survey in November 1994.
 HV7632
 HV7632.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7632.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7632
 HV7632.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7632.GEOID18 height accuracy estimate available here.
 HV7632
 HV7632.Click photographs - Photos may exist for this station.
 HV7632
 HV7632.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7632
 HV7632. The following values were computed from the NAD 83(1993) position.
 HV7632
 HV7632;                    North         East     Units Scale Factor Converg.
 HV7632;SPC MD       -   126,687.907   403,811.849   MT  0.99995055   +0 01 39.2
 HV7632;SPC MD       -   415,641.91  1,324,839.37   sFT  0.99995055   +0 01 39.2
 HV7632;UTM  18      - 4,297,282.286   330,152.659   MT  0.99995525   -1 13 34.4
 HV7632
 HV7632!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7632!SPC MD       -   0.99999340  x   0.99995055  =   0.99994395
 HV7632!UTM  18      -   0.99999340  x   0.99995525  =   0.99994865
 HV7632
 HV7632:                Primary Azimuth Mark                     Grid Az
 HV7632:SPC MD       -  PHELPS                                   287 13 01.4
 HV7632:UTM  18      -  PHELPS                                   288 28 15.0
 HV7632
 HV7632_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3015297282(NAD 83)
 HV7632
 HV7632|---------------------------------------------------------------------|
 HV7632| PID    Reference Object                     Distance      Geod. Az  |
 HV7632|                                                           dddmmss.s |
 HV7632| HV1031 PHELPS                              APPROX. 1.4 KM 2871440.6 |
 HV7632|---------------------------------------------------------------------|
 HV7632
 HV7632                          SUPERSEDED SURVEY CONTROL
 HV7632
 HV7632  NAD 83(1991)-  38 48 28.61555(N)    076 57 22.00739(W) AD(       ) 2
 HV7632  NAD 83(1986)-  38 48 28.61485(N)    076 57 22.01973(W) AD(       ) 2
 HV7632  NAD 27      -  38 48 28.20695(N)    076 57 23.11019(W) AD(       ) 2
 HV7632  NGVD 29 (07/19/86)   74.7    (m)          245.     (f) VERT ANG       
 HV7632
 HV7632.Superseded values are not recommended for survey control.
 HV7632
 HV7632.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7632.See file dsdata.pdf to determine how the superseded data were derived.
 HV7632
 HV7632_MARKER: I = METAL ROD
 HV7632_SETTING: 0 = UNSPECIFIED SETTING
 HV7632_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7632
 HV7632  HISTORY     - Date     Condition        Report By
 HV7632  HISTORY     - 1969     MONUMENTED       WSSC
 HV7632
 HV7632                          STATION DESCRIPTION
 HV7632
 HV7632'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7632'THE STATION IS LOCATED WEST OF TEMPLE HILLS PARK ABOUT .80 MILES
 HV7632'NORTHEAST OF ROSECROFT RACEWAY, ON THE NORTHWEST SIDE OF FISHER
 HV7632'ROAD.
 HV7632'
 HV7632'TO REACH THE STATION FROM BRINKLEY ROAD, GO NORTHWEST ON FISHER
 HV7632'ROAD FOR 1200 FEET TO THE ENTRANCE TO HEATHER HILL APARTMENTS
 HV7632'AND THE STATION IS ON THE LEFT.
 HV7632'
 HV7632'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7632'AND IS .3 FEET BELOW THE SURFACE.  IT IS 86.45 FEET NORTHEAST
 HV7632'OF A POLE, 34.71 FEET SOUTH OF THE FACE OF A LIGHT POST, 26.14
 HV7632'FEET WEST OF THE FACE OF A LIGHT POST, 18.72 FEET SOUTHWEST OF
 HV7632'THE NORTHWEST CORNER OF A BRICK WALL, 21.41 FEET SOUTHWEST OF THE
 HV7632'CENTER OF A BRICK WALL, 26.6 FEET NORTH OF THE NORTH EDGE OF
 HV7632'THE ROAD, AND 61.10 FEET EAST OF A POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7633 ***********************************************************************
 HV7633  DESIGNATION -  17424 WSSC 1970
 HV7633  PID         -  HV7633
 HV7633  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7633  COUNTRY     -  US
 HV7633  USGS QUAD   -  ANACOSTIA (2016)
 HV7633
 HV7633                         *CURRENT SURVEY CONTROL
 HV7633  ______________________________________________________________________
 HV7633* NAD 83(1993) POSITION- 38 48 17.33641(N) 076 57 55.14483(W)   ADJUSTED
 HV7633* NAVD 88 ORTHO HEIGHT -    76.0   (meters)      249.    (feet) VERTCON3
 HV7633  ______________________________________________________________________
 HV7633  GEOID HEIGHT    -        -32.352 (meters)                     GEOID18
 HV7633  LAPLACE CORR    -         -3.73  (seconds)                    DEFLEC18
 HV7633  HORZ ORDER      -  SECOND
 HV7633
 HV7633.The horizontal coordinates were established by classical geodetic methods
 HV7633.and adjusted by the National Geodetic Survey in November 1994.
 HV7633
 HV7633.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7633.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7633
 HV7633.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7633.GEOID18 height accuracy estimate available here.
 HV7633
 HV7633.Click photographs - Photos may exist for this station.
 HV7633
 HV7633.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7633
 HV7633. The following values were computed from the NAD 83(1993) position.
 HV7633
 HV7633;                    North         East     Units Scale Factor Converg.
 HV7633;SPC MD       -   126,339.735   403,012.464   MT  0.99995061   +0 01 18.4
 HV7633;SPC MD       -   414,499.61  1,322,216.73   sFT  0.99995061   +0 01 18.4
 HV7633;UTM  18      - 4,296,951.686   329,345.842   MT  0.99995863   -1 13 54.8
 HV7633
 HV7633!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7633!SPC MD       -   0.99999314  x   0.99995061  =   0.99994375
 HV7633!UTM  18      -   0.99999314  x   0.99995863  =   0.99995177
 HV7633
 HV7633:                Primary Azimuth Mark                     Grid Az
 HV7633:SPC MD       -  17423 WSSC 1970                          066 27 52.1
 HV7633:UTM  18      -  17423 WSSC 1970                          067 43 05.3
 HV7633
 HV7633_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2934596951(NAD 83)
 HV7633
 HV7633|---------------------------------------------------------------------|
 HV7633| PID    Reference Object                     Distance      Geod. Az  |
 HV7633|                                                           dddmmss.s |
 HV7633| HV7632 17423 WSSC 1970                     APPROX. 0.9 KM 0662910.5 |
 HV7633|---------------------------------------------------------------------|
 HV7633
 HV7633                          SUPERSEDED SURVEY CONTROL
 HV7633
 HV7633  NAD 83(1991)-  38 48 17.33526(N)    076 57 55.14577(W) AD(       ) 2
 HV7633  NAD 83(1986)-  38 48 17.33463(N)    076 57 55.15814(W) AD(       ) 2
 HV7633  NAD 27      -  38 48 16.92649(N)    076 57 56.24766(W) AD(       ) 2
 HV7633  NGVD 29 (07/19/86)   76.3    (m)          250.     (f) VERT ANG       
 HV7633
 HV7633.Superseded values are not recommended for survey control.
 HV7633
 HV7633.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7633.See file dsdata.pdf to determine how the superseded data were derived.
 HV7633
 HV7633_MARKER: I = METAL ROD
 HV7633_SETTING: 0 = UNSPECIFIED SETTING
 HV7633_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7633
 HV7633  HISTORY     - Date     Condition        Report By
 HV7633  HISTORY     - 1969     MONUMENTED       WSSC
 HV7633
 HV7633                          STATION DESCRIPTION
 HV7633
 HV7633'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7633'THE STATION IS LOCATED .40 MILES EAST OF PHELPS CORNER ABOUT .60
 HV7633'MILES NORTHEAST OF ROSECROFT RACEWAY, ON THE SOUTH SIDE OF
 HV7633'BRINKLEY ROAD.
 HV7633'
 HV7633'TO REACH THE STATION FROM ST. BARNABAS ROAD, GO EAST ON BRINKLEY
 HV7633'ROAD FOR .40 MILES TO THE STATION ON THE RIGHT, NORTHEAST OF
 HV7633'HOUSE NO. 2423.
 HV7633'
 HV7633'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7633'AND IS .2 FEET BELOW THE SURFACE.  IT IS 57.15 FEET SOUTHEAST
 HV7633'OF A FIRE HYDRANT, 63.95 FEET SOUTHEAST OF A POLE, 13.4 FEET
 HV7633'SOUTH OF THE SOUTH EDGE OF THE ROAD, 2.47 FEET NORTH OF A CORNER
 HV7633'OF A PILLAR AT THE EAST END OF THE WALL, 8.20 FEET EAST OF A
 HV7633'CORNER OF A PILLAR, AT THE WEST END OF THE WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7634 ***********************************************************************
 HV7634  DESIGNATION -  17425 WSSC 1970
 HV7634  PID         -  HV7634
 HV7634  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7634  COUNTRY     -  US
 HV7634  USGS QUAD   -  ANACOSTIA (2016)
 HV7634
 HV7634                         *CURRENT SURVEY CONTROL
 HV7634  ______________________________________________________________________
 HV7634* NAD 83(1993) POSITION- 38 47 05.52357(N) 076 57 59.15595(W)   ADJUSTED
 HV7634* NAVD 88 ORTHO HEIGHT -    71.5   (meters)      235.    (feet) VERTCON3
 HV7634  ______________________________________________________________________
 HV7634  GEOID HEIGHT    -        -32.389 (meters)                     GEOID18
 HV7634  LAPLACE CORR    -         -3.22  (seconds)                    DEFLEC18
 HV7634  HORZ ORDER      -  SECOND
 HV7634
 HV7634.The horizontal coordinates were established by classical geodetic methods
 HV7634.and adjusted by the National Geodetic Survey in November 1994.
 HV7634
 HV7634.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7634.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7634
 HV7634.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7634.GEOID18 height accuracy estimate available here.
 HV7634
 HV7634.Click photographs - Photos may exist for this station.
 HV7634
 HV7634.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7634
 HV7634. The following values were computed from the NAD 83(1993) position.
 HV7634
 HV7634;                    North         East     Units Scale Factor Converg.
 HV7634;SPC MD       -   124,125.348   402,916.499   MT  0.99995110   +0 01 15.8
 HV7634;SPC MD       -   407,234.58  1,321,901.88   sFT  0.99995110   +0 01 15.8
 HV7634;UTM  18      - 4,294,739.909   329,201.461   MT  0.99995924   -1 13 55.4
 HV7634
 HV7634!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7634!SPC MD       -   0.99999387  x   0.99995110  =   0.99994497
 HV7634!UTM  18      -   0.99999387  x   0.99995924  =   0.99995311
 HV7634
 HV7634:                Primary Azimuth Mark                     Grid Az
 HV7634:SPC MD       -  PHELPS                                   352 16 42.0
 HV7634:UTM  18      -  PHELPS                                   353 31 53.2
 HV7634
 HV7634_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2920194739(NAD 83)
 HV7634
 HV7634|---------------------------------------------------------------------|
 HV7634| PID    Reference Object                     Distance      Geod. Az  |
 HV7634|                                                           dddmmss.s |
 HV7634| HV1031 PHELPS                              APPROX. 3.0 KM 3521757.8 |
 HV7634|---------------------------------------------------------------------|
 HV7634
 HV7634                          SUPERSEDED SURVEY CONTROL
 HV7634
 HV7634  NAD 83(1991)-  38 47 05.52241(N)    076 57 59.15682(W) AD(       ) 2
 HV7634  NAD 83(1986)-  38 47 05.52179(N)    076 57 59.16949(W) AD(       ) 2
 HV7634  NAD 27      -  38 47 05.11258(N)    076 58 00.25939(W) AD(       ) 2
 HV7634  NGVD 29 (07/19/86)   71.7    (m)          235.     (f) VERT ANG       
 HV7634
 HV7634.Superseded values are not recommended for survey control.
 HV7634
 HV7634.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7634.See file dsdata.pdf to determine how the superseded data were derived.
 HV7634
 HV7634_MARKER: I = METAL ROD
 HV7634_SETTING: 0 = UNSPECIFIED SETTING
 HV7634_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7634
 HV7634  HISTORY     - Date     Condition        Report By
 HV7634  HISTORY     - 1969     MONUMENTED       WSSC
 HV7634
 HV7634                          STATION DESCRIPTION
 HV7634
 HV7634'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7634'THE STATION IS LOCATED ABOUT .80 MILES WEST OF ROSECROFT RACEWAY
 HV7634'ON THE EAST SIDE OF BOCK ROAD, 1.3 MILES SOUTHEAST OF ST.
 HV7634'BARNABAS ROAD.
 HV7634'
 HV7634'TO REACH THE STATION FROM ST. BARNABAS ROAD, GO SOUTHEAST ON
 HV7634'BOCK ROAD FOR 1.3 MILES TO THE STATION ON THE LEFT.
 HV7634'
 HV7634'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7634'AND IS .6 FEET BELOW THE SURFACE.  IT IS 66.22 FEET SOUTHEAST
 HV7634'OF PEPCO POLE NO. 863002, 10.99 FEET EAST OF THE CENTER OF A
 HV7634'TELEPHONE MANHOLE, 34.09 FEET SOUTH OF THE CENTER OF A SEWER
 HV7634'MANHOLE, 9.00 FEET SOUTHWEST OF AN X CUT IN A CONCRETE WALK,
 HV7634'8.56 FEET NORTHWEST OF AN X CUT IN A CONCRETE WALK, AND 51.97
 HV7634'FEET WEST OF C AND P POLE NO. P-2119.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7637 ***********************************************************************
 HV7637  DESIGNATION -  17426 WSSC 1970
 HV7637  PID         -  HV7637
 HV7637  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7637  COUNTRY     -  US
 HV7637  USGS QUAD   -  ANACOSTIA (2016)
 HV7637
 HV7637                         *CURRENT SURVEY CONTROL
 HV7637  ______________________________________________________________________
 HV7637* NAD 83(1993) POSITION- 38 47 51.31051(N) 076 58 39.66092(W)   ADJUSTED
 HV7637* NAVD 88 ORTHO HEIGHT -    70.1   (meters)      230.    (feet) VERTCON3
 HV7637  ______________________________________________________________________
 HV7637  GEOID HEIGHT    -        -32.344 (meters)                     GEOID18
 HV7637  LAPLACE CORR    -         -3.56  (seconds)                    DEFLEC18
 HV7637  HORZ ORDER      -  SECOND
 HV7637
 HV7637.The horizontal coordinates were established by classical geodetic methods
 HV7637.and adjusted by the National Geodetic Survey in November 1994.
 HV7637
 HV7637.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7637.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7637
 HV7637.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7637.GEOID18 height accuracy estimate available here.
 HV7637
 HV7637.Click photographs - Photos may exist for this station.
 HV7637
 HV7637.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7637
 HV7637. The following values were computed from the NAD 83(1993) position.
 HV7637
 HV7637;                    North         East     Units Scale Factor Converg.
 HV7637;SPC MD       -   125,536.890   401,938.591   MT  0.99995078   +0 00 50.4
 HV7637;SPC MD       -   411,865.61  1,318,693.53   sFT  0.99995078   +0 00 50.4
 HV7637;UTM  18      - 4,296,172.518   328,254.650   MT  0.99996323   -1 14 22.1
 HV7637
 HV7637!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7637!SPC MD       -   0.99999407  x   0.99995078  =   0.99994485
 HV7637!UTM  18      -   0.99999407  x   0.99996323  =   0.99995730
 HV7637
 HV7637:                Primary Azimuth Mark                     Grid Az
 HV7637:SPC MD       -  17425 WSSC 1970                          145 17 09.6
 HV7637:UTM  18      -  17425 WSSC 1970                          146 32 22.1
 HV7637
 HV7637_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2825496172(NAD 83)
 HV7637
 HV7637|---------------------------------------------------------------------|
 HV7637| PID    Reference Object                     Distance      Geod. Az  |
 HV7637|                                                           dddmmss.s |
 HV7637| HV7634 17425 WSSC 1970                     APPROX. 1.7 KM 1451800.0 |
 HV7637| HV7618 TUCKER ROAD PEPCO MICROWAVE         APPROX. 3.2 KM 1490241.6 |
 HV7637|---------------------------------------------------------------------|
 HV7637
 HV7637                          SUPERSEDED SURVEY CONTROL
 HV7637
 HV7637  NAD 83(1991)-  38 47 51.30932(N)    076 58 39.66185(W) AD(       ) 2
 HV7637  NAD 83(1986)-  38 47 51.30880(N)    076 58 39.67433(W) AD(       ) 2
 HV7637  NAD 27      -  38 47 50.90062(N)    076 58 40.76245(W) AD(       ) 2
 HV7637  NGVD 29 (07/19/86)   70.4    (m)          231.     (f) VERT ANG       
 HV7637
 HV7637.Superseded values are not recommended for survey control.
 HV7637
 HV7637.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7637.See file dsdata.pdf to determine how the superseded data were derived.
 HV7637
 HV7637_MARKER: I = METAL ROD
 HV7637_SETTING: 0 = UNSPECIFIED SETTING
 HV7637_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7637
 HV7637  HISTORY     - Date     Condition        Report By
 HV7637  HISTORY     - 1969     MONUMENTED       WSSC
 HV7637
 HV7637                          STATION DESCRIPTION
 HV7637
 HV7637'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7637'THE STATION IS LOCATED .90 MILES WEST OF ROSECROFT RACEWAY ON
 HV7637'THE EAST SIDE OF BOCK ROAD, .3 MILES SOUTHEAST OF ST. BARNABAS
 HV7637'ROAD.
 HV7637'
 HV7637'TO REACH THE STATION FROM ST. BARNABAS ROAD, GO .30 MILES SOUTH
 HV7637'ON BOCK ROAD TO THE STATION ON THE LEFT.
 HV7637'
 HV7637'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7637'AND IS .2 FEET BELOW THE SURFACE.  IT IS 51.91 FEET EAST OF AN X
 HV7637'CUT IN A HEADWALL, 59.32 FEET FEET EAST OF A FIRE HYDRANT, 97.63
 HV7637'FEET SOUTH OF AN X CUT IN THE SOUTH RIM OF A SEWER MANHOLE, 54.95
 HV7637'FEET SOUTHWEST OF C AND P POLE NO. P-447, 36.83 FEET NORTHWEST
 HV7637'OF C AND P POLE NO. P-446, AND 1 FOOT EAST OF THE BACK OF A
 HV7637'CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7535 ***********************************************************************
 HV7535  DESIGNATION -  17427 WSSC 1970
 HV7535  PID         -  HV7535
 HV7535  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7535  COUNTRY     -  US
 HV7535  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7535
 HV7535                         *CURRENT SURVEY CONTROL
 HV7535  ______________________________________________________________________
 HV7535* NAD 83(1993) POSITION- 38 45 41.14181(N) 076 49 32.11295(W)   ADJUSTED
 HV7535* NAVD 88 ORTHO HEIGHT -    72.4   (meters)      238.    (feet) VERTCON3
 HV7535  ______________________________________________________________________
 HV7535  GEOID HEIGHT    -        -32.801 (meters)                     GEOID18
 HV7535  LAPLACE CORR    -         -5.92  (seconds)                    DEFLEC18
 HV7535  HORZ ORDER      -  SECOND
 HV7535
 HV7535.The horizontal coordinates were established by classical geodetic methods
 HV7535.and adjusted by the National Geodetic Survey in November 1994.
 HV7535
 HV7535.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7535.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7535
 HV7535.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7535.GEOID18 height accuracy estimate available here.
 HV7535
 HV7535.Click photographs - Photos may exist for this station.
 HV7535
 HV7535.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7535
 HV7535. The following values were computed from the NAD 83(1993) position.
 HV7535
 HV7535;                    North         East     Units Scale Factor Converg.
 HV7535;SPC MD       -   121,537.386   415,158.644   MT  0.99995183   +0 06 34.1
 HV7535;SPC MD       -   398,743.91  1,362,066.32   sFT  0.99995183   +0 06 34.1
 HV7535;UTM  18      - 4,291,884.937   341,383.882   MT  0.99990982   -1 08 35.5
 HV7535
 HV7535!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7535!SPC MD       -   0.99999379  x   0.99995183  =   0.99994562
 HV7535!UTM  18      -   0.99999379  x   0.99990982  =   0.99990361
 HV7535
 HV7535:                Primary Azimuth Mark                     Grid Az
 HV7535:SPC MD       -  ROSARY                                   342 28 06.7
 HV7535:UTM  18      -  ROSARY                                   343 43 16.3
 HV7535
 HV7535_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4138391884(NAD 83)
 HV7535
 HV7535|---------------------------------------------------------------------|
 HV7535| PID    Reference Object                     Distance      Geod. Az  |
 HV7535|                                                           dddmmss.s |
 HV7535| HV7534 17428 WSSC 1970                     407.361 METERS 0704937.0 |
 HV7535| HV7390 CHELTENHAM NAVAL RAD STA E TK       APPROX. 2.8 KM 2422823.2 |
 HV7535| HV7389 CHELTENHAM NAVAL RAD STA W TK       APPROX. 3.0 KM 2444833.3 |
 HV7535| HV7509 ROSARY                              APPROX. 1.4 KM 3423440.8 |
 HV7535|---------------------------------------------------------------------|
 HV7535
 HV7535                          SUPERSEDED SURVEY CONTROL
 HV7535
 HV7535  NAD 83(1991)-  38 45 41.14158(N)    076 49 32.11308(W) AD(       ) 2
 HV7535  NAD 83(1986)-  38 45 41.13934(N)    076 49 32.12708(W) AD(       ) 2
 HV7535  NAD 27      -  38 45 40.72789(N)    076 49 33.23334(W) AD(       ) 2
 HV7535  NGVD 29 (07/19/86)   72.6    (m)          238.     (f) VERT ANG       
 HV7535
 HV7535.Superseded values are not recommended for survey control.
 HV7535
 HV7535.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7535.See file dsdata.pdf to determine how the superseded data were derived.
 HV7535
 HV7535_MARKER: B = BOLT
 HV7535_SETTING: 0 = UNSPECIFIED SETTING
 HV7535_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7535
 HV7535  HISTORY     - Date     Condition        Report By
 HV7535  HISTORY     - 1969     MONUMENTED       WSSC
 HV7535
 HV7535                          STATION DESCRIPTION
 HV7535
 HV7535'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7535'THE STATION IS LOCATED ABOUT 2.0 MILES SOUTHEAST OF WOODYARD,
 HV7535'ABOUT .90 MILES WEST OF ROUTE 301 AND .30 MILES SOUTHWEST OF
 HV7535'ROSARYVILLE ROAD.
 HV7535'
 HV7535'TO REACH THE STATION FROM DALE DRIVE, GO 1.5 MILES WEST ON
 HV7535'TYRONE DRIVE TO THE STATION ON THE RIGHT.
 HV7535'
 HV7535'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CURB OPPOSITE
 HV7535'HOUSE NO. 10814 ON THE EAST SIDE OF A CONCRETE DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7534 ***********************************************************************
 HV7534  DESIGNATION -  17428 WSSC 1970
 HV7534  PID         -  HV7534
 HV7534  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7534  COUNTRY     -  US
 HV7534  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7534
 HV7534                         *CURRENT SURVEY CONTROL
 HV7534  ______________________________________________________________________
 HV7534* NAD 83(1993) POSITION- 38 45 45.48010(N) 076 49 16.17609(W)   ADJUSTED
 HV7534* NAVD 88 ORTHO HEIGHT -    72.0   (meters)      236.    (feet) VERTCON3
 HV7534  ______________________________________________________________________
 HV7534  GEOID HEIGHT    -        -32.812 (meters)                     GEOID18
 HV7534  LAPLACE CORR    -         -5.96  (seconds)                    DEFLEC18
 HV7534  HORZ ORDER      -  SECOND
 HV7534
 HV7534.The horizontal coordinates were established by classical geodetic methods
 HV7534.and adjusted by the National Geodetic Survey in November 1994.
 HV7534
 HV7534.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7534.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7534
 HV7534.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7534.GEOID18 height accuracy estimate available here.
 HV7534
 HV7534.Click photographs - Photos may exist for this station.
 HV7534
 HV7534.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7534
 HV7534. The following values were computed from the NAD 83(1993) position.
 HV7534
 HV7534;                    North         East     Units Scale Factor Converg.
 HV7534;SPC MD       -   121,671.901   415,543.134   MT  0.99995179   +0 06 44.1
 HV7534;SPC MD       -   399,185.23  1,363,327.77   sFT  0.99995179   +0 06 44.1
 HV7534;UTM  18      - 4,292,011.009   341,771.204   MT  0.99990831   -1 08 25.6
 HV7534
 HV7534!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7534!SPC MD       -   0.99999386  x   0.99995179  =   0.99994565
 HV7534!UTM  18      -   0.99999386  x   0.99990831  =   0.99990217
 HV7534
 HV7534:                Primary Azimuth Mark                     Grid Az
 HV7534:SPC MD       -  17427 WSSC 1970                          250 43 02.9
 HV7534:UTM  18      -  17427 WSSC 1970                          251 58 12.6
 HV7534
 HV7534_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4177192011(NAD 83)
 HV7534
 HV7534|---------------------------------------------------------------------|
 HV7534| PID    Reference Object                     Distance      Geod. Az  |
 HV7534|                                                           dddmmss.s |
 HV7534| HV7390 CHELTENHAM NAVAL RAD STA E TK       APPROX. 3.2 KM 2433302.0 |
 HV7534| HV7535 17427 WSSC 1970                     407.361 METERS 2504947.0 |
 HV7534|---------------------------------------------------------------------|
 HV7534
 HV7534                          SUPERSEDED SURVEY CONTROL
 HV7534
 HV7534  NAD 83(1991)-  38 45 45.47987(N)    076 49 16.17623(W) AD(       ) 2
 HV7534  NAD 83(1986)-  38 45 45.47759(N)    076 49 16.19021(W) AD(       ) 2
 HV7534  NAD 27      -  38 45 45.06665(N)    076 49 17.29592(W) AD(       ) 2
 HV7534  NGVD 29 (07/19/86)   72.2    (m)          237.     (f) VERT ANG       
 HV7534
 HV7534.Superseded values are not recommended for survey control.
 HV7534
 HV7534.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7534.See file dsdata.pdf to determine how the superseded data were derived.
 HV7534
 HV7534_MARKER: B = BOLT
 HV7534_SETTING: 0 = UNSPECIFIED SETTING
 HV7534_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7534
 HV7534  HISTORY     - Date     Condition        Report By
 HV7534  HISTORY     - 1969     MONUMENTED       WSSC
 HV7534
 HV7534                          STATION DESCRIPTION
 HV7534
 HV7534'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7534'THE STATION IS LOCATED ABOUT 2.0 MILES SOUTHEAST OF WOODYARD AND
 HV7534'.70 MILES WEST OF ROUTE 301.
 HV7534'
 HV7534'TO REACH THE STATION FROM ROSARYVILLE ROAD, GO WEST ON TYRONE
 HV7534'DRIVE FOR 100 FEET TO THE STATION ON THE LEFT.
 HV7534'
 HV7534'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8059 ***********************************************************************
 HV8059  DESIGNATION -  17429 WSSC 1970
 HV8059  PID         -  HV8059
 HV8059  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8059  COUNTRY     -  US
 HV8059  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8059
 HV8059                         *CURRENT SURVEY CONTROL
 HV8059  ______________________________________________________________________
 HV8059* NAD 83(1991) POSITION- 38 57 39.53980(N) 076 54 17.12296(W)   ADJUSTED
 HV8059* NAVD 88 ORTHO HEIGHT -    38.0   (meters)      125.    (feet) VERTCON3
 HV8059  ______________________________________________________________________
 HV8059  GEOID HEIGHT    -        -32.241 (meters)                     GEOID18
 HV8059  LAPLACE CORR    -         -4.91  (seconds)                    DEFLEC18
 HV8059  HORZ ORDER      -  SECOND
 HV8059
 HV8059.The horizontal coordinates were established by classical geodetic methods
 HV8059.and adjusted by the National Geodetic Survey in January 1992.
 HV8059
 HV8059.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8059.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8059
 HV8059.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8059.GEOID18 height accuracy estimate available here.
 HV8059
 HV8059.Click photographs - Photos may exist for this station.
 HV8059
 HV8059.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8059
 HV8059. The following values were computed from the NAD 83(1991) position.
 HV8059
 HV8059;                    North         East     Units Scale Factor Converg.
 HV8059;SPC MD       -   143,679.278   408,254.735   MT  0.99995095   +0 03 35.2
 HV8059;SPC MD       -   471,387.76  1,339,415.74   sFT  0.99995095   +0 03 35.2
 HV8059;UTM  18      - 4,314,172.126   334,966.829   MT  0.99993538   -1 11 52.7
 HV8059
 HV8059!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8059!SPC MD       -   0.99999910  x   0.99995095  =   0.99995005
 HV8059!UTM  18      -   0.99999910  x   0.99993538  =   0.99993448
 HV8059
 HV8059:                Primary Azimuth Mark                     Grid Az
 HV8059:SPC MD       -  REED                                     035 01 07.6
 HV8059:UTM  18      -  REED                                     036 16 35.5
 HV8059
 HV8059_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3496614172(NAD 83)
 HV8059
 HV8059|---------------------------------------------------------------------|
 HV8059| PID    Reference Object                     Distance      Geod. Az  |
 HV8059|                                                           dddmmss.s |
 HV8059| HV7758 REED                                APPROX. 1.4 KM 0350442.8 |
 HV8059| HV8057 17430 WSSC 1970                     269.276 METERS 10253     |
 HV8059|---------------------------------------------------------------------|
 HV8059
 HV8059                          SUPERSEDED SURVEY CONTROL
 HV8059
 HV8059  NAD 83(1986)-  38 57 39.53853(N)    076 54 17.13426(W) AD(       ) 2
 HV8059  NAD 27      -  38 57 39.14130(N)    076 54 18.22876(W) AD(       ) 2
 HV8059  NGVD 29 (07/19/86)   38.2    (m)          125.     (f) VERT ANG       
 HV8059
 HV8059.Superseded values are not recommended for survey control.
 HV8059
 HV8059.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8059.See file dsdata.pdf to determine how the superseded data were derived.
 HV8059
 HV8059_MARKER: I = METAL ROD
 HV8059_SETTING: 0 = UNSPECIFIED SETTING
 HV8059_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8059
 HV8059  HISTORY     - Date     Condition        Report By
 HV8059  HISTORY     - 1969     MONUMENTED       WSSC
 HV8059
 HV8059                          STATION DESCRIPTION
 HV8059
 HV8059'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8059'THE STATION IS LOCATED AT EAST PINES ON THE BALTIMORE-WASHINGTON
 HV8059'PARKWAY AT RIVERDALE ROAD.
 HV8059'
 HV8059'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8059'AND IS .6 FEET BELOW THE SURFACE.  IT IS 15.00 FEET WEST OF THE
 HV8059'NORTHBOUND LANE, 17.78 FEET NORTHEAST OF AN X CUT IN THE END OF A
 HV8059'CONCRETE BRIDGE, 3.18 FEET EAST OF AN X CUT IN THE SAME BRIDGE,
 HV8059'23.48 FEET SOUTHEAST OF AN X CUT IN THE SAME BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8057 ***********************************************************************
 HV8057  DESIGNATION -  17430 WSSC 1970
 HV8057  PID         -  HV8057
 HV8057  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8057  COUNTRY     -  US
 HV8057  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8057
 HV8057                         *CURRENT SURVEY CONTROL
 HV8057  ______________________________________________________________________
 HV8057* NAD 83(1991) POSITION- 38 57 37.59276(N) 076 54 06.22019(W)   ADJUSTED
 HV8057* NAVD 88 ORTHO HEIGHT -    46.1   (meters)      151.    (feet) VERTCON3
 HV8057  ______________________________________________________________________
 HV8057  GEOID HEIGHT    -        -32.250 (meters)                     GEOID18
 HV8057  LAPLACE CORR    -         -4.96  (seconds)                    DEFLEC18
 HV8057  HORZ ORDER      -  SECOND
 HV8057
 HV8057.The horizontal coordinates were established by classical geodetic methods
 HV8057.and adjusted by the National Geodetic Survey in January 1992.
 HV8057
 HV8057.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8057.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8057
 HV8057.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8057.GEOID18 height accuracy estimate available here.
 HV8057
 HV8057.Click photographs - Photos may exist for this station.
 HV8057
 HV8057.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8057
 HV8057. The following values were computed from the NAD 83(1991) position.
 HV8057
 HV8057;                    North         East     Units Scale Factor Converg.
 HV8057;SPC MD       -   143,619.518   408,517.283   MT  0.99995094   +0 03 42.0
 HV8057;SPC MD       -   471,191.70  1,340,277.12   sFT  0.99995094   +0 03 42.0
 HV8057;UTM  18      - 4,314,106.618   335,227.998   MT  0.99993432   -1 11 45.8
 HV8057
 HV8057!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8057!SPC MD       -   0.99999783  x   0.99995094  =   0.99994877
 HV8057!UTM  18      -   0.99999783  x   0.99993432  =   0.99993215
 HV8057
 HV8057:                Primary Azimuth Mark                     Grid Az
 HV8057:SPC MD       -  RIVERDALE FIRST BAP CH SPIRE             275 55 01.6
 HV8057:UTM  18      -  RIVERDALE FIRST BAP CH SPIRE             277 10 29.4
 HV8057
 HV8057_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3522714106(NAD 83)
 HV8057
 HV8057|---------------------------------------------------------------------|
 HV8057| PID    Reference Object                     Distance      Geod. Az  |
 HV8057|                                                           dddmmss.s |
 HV8057| HV7759 RIVERDALE FIRST BAP CH SPIRE        APPROX. 0.9 KM 2755843.6 |
 HV8057| HV8059 17429 WSSC 1970                     269.276 METERS 28253     |
 HV8057|---------------------------------------------------------------------|
 HV8057
 HV8057                          SUPERSEDED SURVEY CONTROL
 HV8057
 HV8057  NAD 83(1986)-  38 57 37.59147(N)    076 54 06.23150(W) AD(       ) 2
 HV8057  NAD 27      -  38 57 37.19420(N)    076 54 07.32652(W) AD(       ) 2
 HV8057  NGVD 29 (07/19/86)   46.3    (m)          152.     (f) VERT ANG       
 HV8057
 HV8057.Superseded values are not recommended for survey control.
 HV8057
 HV8057.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8057.See file dsdata.pdf to determine how the superseded data were derived.
 HV8057
 HV8057_MARKER: I = METAL ROD
 HV8057_SETTING: 0 = UNSPECIFIED SETTING
 HV8057_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8057
 HV8057  HISTORY     - Date     Condition        Report By
 HV8057  HISTORY     - 1969     MONUMENTED       WSSC
 HV8057
 HV8057                          STATION DESCRIPTION
 HV8057
 HV8057'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8057'THE STATION IS LOCATED AT EAST PINES ABOUT .20 MILES EAST OF THE
 HV8057'BALTIMORE-WASHINGTON PARKWAY AND .10 MILES SOUTH OF RIVERDALE
 HV8057'ROAD, ON 67TH AVENUE.
 HV8057'
 HV8057'TO REACH THE STATION FROM RIVERDALE ROAD, GO SOUTH ON 67TH
 HV8057'AVENUE FOR 500 FEET TO THE STATION ON THE LEFT.
 HV8057'
 HV8057'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8057'AND IS .5 FEET BELOW THE SURFACE.  IT IS 40.75 FEET EAST OF THE
 HV8057'CENTER OF A MANHOLE, 41.03 FEET EAST OF PEPCO POLE NO. 62382,
 HV8057'49.05 FEET SOUTHEAST OF A FIRE HYDRANT, 19.36 FEET SOUTH OF THE
 HV8057'CENTER OF A WATER MANHOLE AND 1.1 FEET EAST OF A CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7378 ***********************************************************************
 HV7378  DESIGNATION -  17431 WSSC 1970
 HV7378  PID         -  HV7378
 HV7378  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7378  COUNTRY     -  US
 HV7378  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7378
 HV7378                         *CURRENT SURVEY CONTROL
 HV7378  ______________________________________________________________________
 HV7378* NAD 83(1993) POSITION- 38 42 44.21888(N) 076 44 53.89867(W)   ADJUSTED
 HV7378* NAVD 88 ORTHO HEIGHT -    45.2   (meters)      148.    (feet) VERTCON3
 HV7378  ______________________________________________________________________
 HV7378  GEOID HEIGHT    -        -33.164 (meters)                     GEOID18
 HV7378  LAPLACE CORR    -         -5.12  (seconds)                    DEFLEC18
 HV7378  HORZ ORDER      -  SECOND
 HV7378
 HV7378.The horizontal coordinates were established by classical geodetic methods
 HV7378.and adjusted by the National Geodetic Survey in November 1994.
 HV7378
 HV7378.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7378.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7378
 HV7378.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7378.GEOID18 height accuracy estimate available here.
 HV7378
 HV7378.Click photographs - Photos may exist for this station.
 HV7378
 HV7378.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7378
 HV7378. The following values were computed from the NAD 83(1993) position.
 HV7378
 HV7378;                    North         East     Units Scale Factor Converg.
 HV7378;SPC MD       -   116,097.703   421,890.406   MT  0.99995390   +0 09 28.7
 HV7378;SPC MD       -   380,897.21  1,384,152.11   sFT  0.99995390   +0 09 28.7
 HV7378;UTM  18      - 4,286,299.762   347,994.801   MT  0.99988453   -1 05 37.0
 HV7378
 HV7378!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7378!SPC MD       -   0.99999811  x   0.99995390  =   0.99995201
 HV7378!UTM  18      -   0.99999811  x   0.99988453  =   0.99988264
 HV7378
 HV7378:                Primary Azimuth Mark                     Grid Az
 HV7378:SPC MD       -  ROLYAN                                   141 19 47.3
 HV7378:UTM  18      -  ROLYAN                                   142 34 53.0
 HV7378
 HV7378_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4799486299(NAD 83)
 HV7378
 HV7378|---------------------------------------------------------------------|
 HV7378| PID    Reference Object                     Distance      Geod. Az  |
 HV7378|                                                           dddmmss.s |
 HV7378| HV7377 17432 WSSC 1970                     239.624 METERS 08752     |
 HV7378| HV7366 ROLYAN                              APPROX. 1.0 KM 1412916.0 |
 HV7378|---------------------------------------------------------------------|
 HV7378
 HV7378                          SUPERSEDED SURVEY CONTROL
 HV7378
 HV7378  NAD 83(1991)-  38 42 44.21841(N)    076 44 53.89892(W) AD(       ) 2
 HV7378  NAD 83(1986)-  38 42 44.21617(N)    076 44 53.91371(W) AD(       ) 2
 HV7378  NAD 27      -  38 42 43.79707(N)    076 44 55.02899(W) AD(       ) 2
 HV7378  NGVD 29 (07/19/86)   45.5    (m)          149.     (f) VERT ANG       
 HV7378
 HV7378.Superseded values are not recommended for survey control.
 HV7378
 HV7378.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7378.See file dsdata.pdf to determine how the superseded data were derived.
 HV7378
 HV7378_MARKER: I = METAL ROD
 HV7378_SETTING: 0 = UNSPECIFIED SETTING
 HV7378_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7378
 HV7378  HISTORY     - Date     Condition        Report By
 HV7378  HISTORY     - 1969     MONUMENTED       WSSC
 HV7378
 HV7378                          STATION DESCRIPTION
 HV7378
 HV7378'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7378'THE STATION IS LOCATED AT NAYLOR, .40 MILES WEST OF ROUTE 382 ON
 HV7378'THE SOUTH SIDE OF NORTH-KEYS NAYLOR ROAD.
 HV7378'
 HV7378'TO REACH THE STATION FROM ROUTE 382, GO WEST ON NORTH-KEYS NAYLOR
 HV7378'ROAD FOR .40 MILES TO THE STATION ON THE LEFT.
 HV7378'
 HV7378'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7378'AND IS .8 FEET BELOW THE SURFACE.  IT IS 76.23 FEET SOUTH OF THE
 HV7378'SOUTHWEST CORNER OF A BARN, 45.91 FEET SOUTHWEST OF PEPCO POLE NO.
 HV7378'826919, 36.00 FEET WEST OF PEPCO POLE NO. 826888, 92.00 FEET
 HV7378'NORTHWEST OF A CORNER OF A GARAGE HOUSE NO. 2735, AND 89.83 FEET
 HV7378'NORTH OF A CORNER OF A HOUSE AND GARAGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7377 ***********************************************************************
 HV7377  DESIGNATION -  17432 WSSC 1970
 HV7377  PID         -  HV7377
 HV7377  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7377  COUNTRY     -  US
 HV7377  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7377
 HV7377                         *CURRENT SURVEY CONTROL
 HV7377  ______________________________________________________________________
 HV7377* NAD 83(1993) POSITION- 38 42 44.50840(N) 076 44 43.98734(W)   ADJUSTED
 HV7377* NAVD 88 ORTHO HEIGHT -    46.0   (meters)      151.    (feet) VERTCON3
 HV7377  ______________________________________________________________________
 HV7377  GEOID HEIGHT    -        -33.171 (meters)                     GEOID18
 HV7377  LAPLACE CORR    -         -5.09  (seconds)                    DEFLEC18
 HV7377  HORZ ORDER      -  SECOND
 HV7377
 HV7377.The horizontal coordinates were established by classical geodetic methods
 HV7377.and adjusted by the National Geodetic Survey in November 1994.
 HV7377
 HV7377.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7377.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7377
 HV7377.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7377.GEOID18 height accuracy estimate available here.
 HV7377
 HV7377.Click photographs - Photos may exist for this station.
 HV7377
 HV7377.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7377
 HV7377. The following values were computed from the NAD 83(1993) position.
 HV7377
 HV7377;                    North         East     Units Scale Factor Converg.
 HV7377;SPC MD       -   116,107.294   422,129.827   MT  0.99995390   +0 09 34.9
 HV7377;SPC MD       -   380,928.68  1,384,937.61   sFT  0.99995390   +0 09 34.9
 HV7377;UTM  18      - 4,286,304.120   348,234.358   MT  0.99988364   -1 05 30.8
 HV7377
 HV7377!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7377!SPC MD       -   0.99999798  x   0.99995390  =   0.99995188
 HV7377!UTM  18      -   0.99999798  x   0.99988364  =   0.99988162
 HV7377
 HV7377_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4823486304(NAD 83)
 HV7377
 HV7377                          SUPERSEDED SURVEY CONTROL
 HV7377
 HV7377  NAD 83(1991)-  38 42 44.50791(N)    076 44 43.98759(W) AD(       ) 2
 HV7377  NAD 83(1986)-  38 42 44.50566(N)    076 44 44.00239(W) AD(       ) 2
 HV7377  NAD 27      -  38 42 44.08649(N)    076 44 45.11797(W) AD(       ) 2
 HV7377  NGVD 29 (07/19/86)   46.3    (m)          152.     (f) VERT ANG       
 HV7377
 HV7377.Superseded values are not recommended for survey control.
 HV7377
 HV7377.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7377.See file dsdata.pdf to determine how the superseded data were derived.
 HV7377
 HV7377_MARKER: I = METAL ROD
 HV7377_SETTING: 0 = UNSPECIFIED SETTING
 HV7377_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7377
 HV7377  HISTORY     - Date     Condition        Report By
 HV7377  HISTORY     - 1969     MONUMENTED       WSSC
 HV7377
 HV7377                          STATION DESCRIPTION
 HV7377
 HV7377'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7377'THE STATION IS LOCATED AT NAYLOR, 4.2 MILES NORTHEAST OF BADEN AND
 HV7377'2.4 MILES WEST OF THE PATUXENT RIVER.
 HV7377'
 HV7377'TO REACH THE STATION GO TO THE INTERSECTION OF ROUTE 382 AND
 HV7377'NORTH-KEYS NAYLOR ROAD.  THE STATION IS AT THE SOUTHEAST CORNER OF
 HV7377'THE INTERSECTION AT THE TOP OF A BANK.
 HV7377'
 HV7377'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7377'AND IS .6 FEET BELOW THE SURFACE.  IT IS 70.43 FEET SOUTHEAST OF C
 HV7377'AND P POLE NO. 121, 70.63 FEET SOUTHWEST OF A CORNER OF THE
 HV7377'METHODIST CHURCH, 6.06 FEET NORTH OF PEPCO POLE NO. 820846, 9.20
 HV7377'FEET EAST OF THE SOUTH END OF A CONCRETE WALL, AND 8.53 FEET WEST
 HV7377'OF THE EAST END OF A CONCRETE WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7544 ***********************************************************************
 HV7544  DESIGNATION -  17433 WSSC 1970
 HV7544  PID         -  HV7544
 HV7544  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7544  COUNTRY     -  US
 HV7544  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7544
 HV7544                         *CURRENT SURVEY CONTROL
 HV7544  ______________________________________________________________________
 HV7544* NAD 83(1993) POSITION- 38 51 38.92060(N) 076 52 13.23911(W)   ADJUSTED
 HV7544* NAVD 88 ORTHO HEIGHT -    82.3   (meters)      270.    (feet) VERTCON3
 HV7544  ______________________________________________________________________
 HV7544  GEOID HEIGHT    -        -32.472 (meters)                     GEOID18
 HV7544  LAPLACE CORR    -         -5.09  (seconds)                    DEFLEC18
 HV7544  HORZ ORDER      -  SECOND
 HV7544
 HV7544.The horizontal coordinates were established by classical geodetic methods
 HV7544.and adjusted by the National Geodetic Survey in November 1994.
 HV7544
 HV7544.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7544.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7544
 HV7544.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7544.GEOID18 height accuracy estimate available here.
 HV7544
 HV7544.Click photographs - Photos may exist for this station.
 HV7544
 HV7544.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7544
 HV7544. The following values were computed from the NAD 83(1993) position.
 HV7544
 HV7544;                    North         East     Units Scale Factor Converg.
 HV7544;SPC MD       -   132,563.045   411,253.020   MT  0.99994988   +0 04 53.0
 HV7544;SPC MD       -   434,917.26  1,349,252.62   sFT  0.99994988   +0 04 53.0
 HV7544;UTM  18      - 4,302,993.049   337,720.589   MT  0.99992429   -1 10 25.6
 HV7544
 HV7544!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7544!SPC MD       -   0.99999219  x   0.99994988  =   0.99994207
 HV7544!UTM  18      -   0.99999219  x   0.99992429  =   0.99991648
 HV7544
 HV7544:                Primary Azimuth Mark                     Grid Az
 HV7544:SPC MD       -  SANSBURY                                 093 36 34.4
 HV7544:UTM  18      -  SANSBURY                                 094 51 53.0
 HV7544
 HV7544_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3772002993(NAD 83)
 HV7544
 HV7544|---------------------------------------------------------------------|
 HV7544| PID    Reference Object                     Distance      Geod. Az  |
 HV7544|                                                           dddmmss.s |
 HV7544| HV7508 SANSBURY                            APPROX. 2.2 KM 0934127.4 |
 HV7544| HV7543 17434 WSSC 1970                     249.066 METERS 09954     |
 HV7544|---------------------------------------------------------------------|
 HV7544
 HV7544                          SUPERSEDED SURVEY CONTROL
 HV7544
 HV7544  NAD 83(1991)-  38 51 38.91996(N)    076 52 13.23930(W) AD(       ) 2
 HV7544  NAD 83(1986)-  38 51 38.91831(N)    076 52 13.25179(W) AD(       ) 2
 HV7544  NAD 27      -  38 51 38.51351(N)    076 52 14.35164(W) AD(       ) 2
 HV7544  NGVD 29 (07/19/86)   82.5    (m)          271.     (f) VERT ANG       
 HV7544
 HV7544.Superseded values are not recommended for survey control.
 HV7544
 HV7544.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7544.See file dsdata.pdf to determine how the superseded data were derived.
 HV7544
 HV7544_MARKER: B = BOLT
 HV7544_SETTING: 0 = UNSPECIFIED SETTING
 HV7544_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7544
 HV7544  HISTORY     - Date     Condition        Report By
 HV7544  HISTORY     - 1969     MONUMENTED       WSSC
 HV7544
 HV7544                          STATION DESCRIPTION
 HV7544
 HV7544'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7544'THE STATION IS LOCATED ABOUT .20 MILES EAST OF DISTRICT HEIGHTS,
 HV7544'200 FEET EAST OF FORESTVILLE-RITCHIE ROAD, AND ABOUT 200 FEET
 HV7544'NORTH OF D ARCY ROAD.
 HV7544'
 HV7544'TO REACH THE STATION FROM OVERTON DRIVE, GO WEST ON DANIEL
 HV7544'DRIVE TO END.
 HV7544'
 HV7544'THE STATION MARK IS A BRASS BOLT IN A CONCRETE GUTTER AT A
 HV7544'CONCRETE DRIVE OF HOUSE NO. 7900.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7543 ***********************************************************************
 HV7543  DESIGNATION -  17434 WSSC 1970
 HV7543  PID         -  HV7543
 HV7543  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7543  COUNTRY     -  US
 HV7543  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7543
 HV7543                         *CURRENT SURVEY CONTROL
 HV7543  ______________________________________________________________________
 HV7543* NAD 83(1993) POSITION- 38 51 37.53253(N) 076 52 03.06242(W)   ADJUSTED
 HV7543* NAVD 88 ORTHO HEIGHT -    76.2   (meters)      250.    (feet) VERTCON3
 HV7543  ______________________________________________________________________
 HV7543  GEOID HEIGHT    -        -32.480 (meters)                     GEOID18
 HV7543  LAPLACE CORR    -         -5.12  (seconds)                    DEFLEC18
 HV7543  HORZ ORDER      -  SECOND
 HV7543
 HV7543.The horizontal coordinates were established by classical geodetic methods
 HV7543.and adjusted by the National Geodetic Survey in November 1994.
 HV7543
 HV7543.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7543.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7543
 HV7543.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7543.GEOID18 height accuracy estimate available here.
 HV7543
 HV7543.Click photographs - Photos may exist for this station.
 HV7543
 HV7543.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7543
 HV7543. The following values were computed from the NAD 83(1993) position.
 HV7543
 HV7543;                    North         East     Units Scale Factor Converg.
 HV7543;SPC MD       -   132,520.596   411,498.429   MT  0.99994988   +0 04 59.3
 HV7543;SPC MD       -   434,777.99  1,350,057.76   sFT  0.99994988   +0 04 59.3
 HV7543;UTM  18      - 4,302,945.235   337,965.003   MT  0.99992331   -1 10 19.1
 HV7543
 HV7543!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7543!SPC MD       -   0.99999315  x   0.99994988  =   0.99994303
 HV7543!UTM  18      -   0.99999315  x   0.99992331  =   0.99991646
 HV7543
 HV7543_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3796502945(NAD 83)
 HV7543
 HV7543                          SUPERSEDED SURVEY CONTROL
 HV7543
 HV7543  NAD 83(1991)-  38 51 37.53189(N)    076 52 03.06261(W) AD(       ) 2
 HV7543  NAD 83(1986)-  38 51 37.53022(N)    076 52 03.07509(W) AD(       ) 2
 HV7543  NAD 27      -  38 51 37.12539(N)    076 52 04.17527(W) AD(       ) 2
 HV7543  NGVD 29 (07/19/86)   76.4    (m)          251.     (f) VERT ANG       
 HV7543
 HV7543.Superseded values are not recommended for survey control.
 HV7543
 HV7543.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7543.See file dsdata.pdf to determine how the superseded data were derived.
 HV7543
 HV7543_MARKER: B = BOLT
 HV7543_SETTING: 0 = UNSPECIFIED SETTING
 HV7543_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7543
 HV7543  HISTORY     - Date     Condition        Report By
 HV7543  HISTORY     - 1969     MONUMENTED       WSSC
 HV7543
 HV7543                          STATION DESCRIPTION
 HV7543
 HV7543'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7543'THE STATION IS LOCATED ABOUT .30 MILES EAST OF DISTRICT HEIGHTS,
 HV7543'.15 MILES SOUTHEAST OF FORESTVILLE-RITCHIE ROAD, AND .20 MILES
 HV7543'NORTH OF D ARCY ROAD.
 HV7543'
 HV7543'THE STATION IS AT THE NORTHEAST CORNER OF DANIEL DRIVE AND
 HV7543'OVERTON DRIVE.
 HV7543'
 HV7543'THE STATION MARK IS A BRASS BOLT, SOUTHWEST OF HOUSE NO. 2010
 HV7543'IN THE TOP OF A CONCRETE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5907 ***********************************************************************
 JV5907  DESIGNATION -  17435 WSSC 1970
 JV5907  PID         -  JV5907
 JV5907  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5907  COUNTRY     -  US
 JV5907  USGS QUAD   -  LAUREL (2016)
 JV5907
 JV5907                         *CURRENT SURVEY CONTROL
 JV5907  ______________________________________________________________________
 JV5907* NAD 83(1991) POSITION- 39 06 06.98289(N) 076 51 45.30183(W)   ADJUSTED
 JV5907* NAVD 88 ORTHO HEIGHT -    70.2   (meters)      230.    (feet) VERTCON3
 JV5907  ______________________________________________________________________
 JV5907  GEOID HEIGHT    -        -32.216 (meters)                     GEOID18
 JV5907  LAPLACE CORR    -         -4.67  (seconds)                    DEFLEC18
 JV5907  HORZ ORDER      -  SECOND
 JV5907
 JV5907.The horizontal coordinates were established by classical geodetic methods
 JV5907.and adjusted by the National Geodetic Survey in January 1992.
 JV5907
 JV5907.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5907.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5907
 JV5907.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5907.GEOID18 height accuracy estimate available here.
 JV5907
 JV5907.Click photographs - Photos may exist for this station.
 JV5907
 JV5907.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5907
 JV5907. The following values were computed from the NAD 83(1991) position.
 JV5907
 JV5907;                    North         East     Units Scale Factor Converg.
 JV5907;SPC MD       -   159,331.624   411,886.259   MT  0.99995761   +0 05 10.5
 JV5907;SPC MD       -   522,740.50  1,351,330.17   sFT  0.99995761   +0 05 10.5
 JV5907;UTM  18      - 4,329,740.455   338,941.420   MT  0.99991941   -1 10 30.0
 JV5907
 JV5907!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5907!SPC MD       -   0.99999404  x   0.99995761  =   0.99995165
 JV5907!UTM  18      -   0.99999404  x   0.99991941  =   0.99991345
 JV5907
 JV5907:                Primary Azimuth Mark                     Grid Az
 JV5907:SPC MD       -  STEWARD                                  115 51 21.8
 JV5907:UTM  18      -  STEWARD                                  117 07 02.3
 JV5907
 JV5907_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3894129740(NAD 83)
 JV5907
 JV5907|---------------------------------------------------------------------|
 JV5907| PID    Reference Object                     Distance      Geod. Az  |
 JV5907|                                                           dddmmss.s |
 JV5907| JV5906 17436 WSSC 1970                     422.532 METERS 0993941.5 |
 JV5907| JV5871 STEWARD                             APPROX. 2.0 KM 1155632.3 |
 JV5907|---------------------------------------------------------------------|
 JV5907
 JV5907                          SUPERSEDED SURVEY CONTROL
 JV5907
 JV5907  NAD 83(1986)-  39 06 06.98149(N)    076 51 45.31171(W) AD(       ) 2
 JV5907  NAD 27      -  39 06 06.59115(N)    076 51 46.41198(W) AD(       ) 2
 JV5907  NGVD 29 (07/19/86)   70.4    (m)          231.     (f) VERT ANG       
 JV5907
 JV5907.Superseded values are not recommended for survey control.
 JV5907
 JV5907.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5907.See file dsdata.pdf to determine how the superseded data were derived.
 JV5907
 JV5907_MARKER: I = METAL ROD
 JV5907_SETTING: 0 = UNSPECIFIED SETTING
 JV5907_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5907
 JV5907  HISTORY     - Date     Condition        Report By
 JV5907  HISTORY     - 1969     MONUMENTED       WSSC
 JV5907  HISTORY     - 19920606 MARK NOT FOUND   USPSQD
 JV5907
 JV5907                          STATION DESCRIPTION
 JV5907
 JV5907'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5907'THE STATION IS LOCATED IN THE TOWN OF LAUREL ON THE SOUTHEAST
 JV5907'SIDE OF 10TH STREET, 200 FEET NORTH OF ROUTE 198.
 JV5907'
 JV5907'TO REACH THE STATION FROM ROUTE 198, GO NORTHEAST ON 10TH STREET
 JV5907'FOR 200 FEET TO THE STATION ON THE RIGHT.
 JV5907'
 JV5907'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5907'AND IS SET FLUSH WITH THE SURFACE.  IT IS 51.77 FEET NORTHWEST
 JV5907'OF A CORNER OF A PORCH ON HOUSE NO. 622, 41.77 FEET NORTH OF A
 JV5907'CORNER OF A PORCH ON THE SAME HOUSE, 71.17 FEET WEST OF A CORNER
 JV5907'ON HOUSE NO. 618, 49.41 FEET EAST OF A FIRE HYDRANT, AND 29.30
 JV5907'FEET SOUTHEAST OF C AND P POLE NO. 10.
 JV5907
 JV5907                          STATION RECOVERY (1992)
 JV5907
 JV5907'RECOVERY NOTE BY US POWER SQUADRON 1992 (CW)
 JV5907'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5906 ***********************************************************************
 JV5906  DESIGNATION -  17436 WSSC 1970
 JV5906  PID         -  JV5906
 JV5906  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5906  COUNTRY     -  US
 JV5906  USGS QUAD   -  LAUREL (2016)
 JV5906
 JV5906                         *CURRENT SURVEY CONTROL
 JV5906  ______________________________________________________________________
 JV5906* NAD 83(1991) POSITION- 39 06 04.68303(N) 076 51 27.96667(W)   ADJUSTED
 JV5906* NAVD 88 ORTHO HEIGHT -    55.4   (meters)      182.    (feet) VERTCON3
 JV5906  ______________________________________________________________________
 JV5906  GEOID HEIGHT    -        -32.228 (meters)                     GEOID18
 JV5906  LAPLACE CORR    -         -4.77  (seconds)                    DEFLEC18
 JV5906  HORZ ORDER      -  SECOND
 JV5906
 JV5906.The horizontal coordinates were established by classical geodetic methods
 JV5906.and adjusted by the National Geodetic Survey in January 1992.
 JV5906
 JV5906.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5906.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5906
 JV5906.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5906.GEOID18 height accuracy estimate available here.
 JV5906
 JV5906.Click photographs - Photos may exist for this station.
 JV5906
 JV5906.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5906
 JV5906. The following values were computed from the NAD 83(1991) position.
 JV5906
 JV5906;                    North         East     Units Scale Factor Converg.
 JV5906;SPC MD       -   159,261.342   412,302.887   MT  0.99995757   +0 05 21.4
 JV5906;SPC MD       -   522,509.92  1,352,697.06   sFT  0.99995757   +0 05 21.4
 JV5906;UTM  18      - 4,329,661.022   339,356.383   MT  0.99991776   -1 10 19.0
 JV5906
 JV5906!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5906!SPC MD       -   0.99999637  x   0.99995757  =   0.99995394
 JV5906!UTM  18      -   0.99999637  x   0.99991776  =   0.99991413
 JV5906
 JV5906_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3935629661(NAD 83)
 JV5906
 JV5906                          SUPERSEDED SURVEY CONTROL
 JV5906
 JV5906  NAD 83(1986)-  39 06 04.68158(N)    076 51 27.97655(W) AD(       ) 2
 JV5906  NAD 27      -  39 06 04.29121(N)    076 51 29.07736(W) AD(       ) 2
 JV5906  NGVD 29 (07/19/86)   55.6    (m)          182.     (f) VERT ANG       
 JV5906
 JV5906.Superseded values are not recommended for survey control.
 JV5906
 JV5906.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5906.See file dsdata.pdf to determine how the superseded data were derived.
 JV5906
 JV5906_MARKER: I = METAL ROD
 JV5906_SETTING: 0 = UNSPECIFIED SETTING
 JV5906_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5906
 JV5906  HISTORY     - Date     Condition        Report By
 JV5906  HISTORY     - 1969     MONUMENTED       WSSC
 JV5906  HISTORY     - 19920606 GOOD             USPSQD
 JV5906
 JV5906                          STATION DESCRIPTION
 JV5906
 JV5906'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5906'THE STATION IS LOCATED IN THE TOWN OF LAUREL AT THE SOUTHWEST
 JV5906'CORNER OF THE INTERSECTION OF 8TH STREET AND ROUTE 198.
 JV5906'
 JV5906'TO REACH THE STATION FROM ROUTE 198, GO SOUTH ON 8TH STREET FOR
 JV5906'150 FEET TO THE STATION ON THE RIGHT.
 JV5906'
 JV5906'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5906'AND IS SET FLUSH WITH THE SURFACE.  IT IS 40.86 FEET EAST OF A
 JV5906'CORNER ON APARTMENT BUILDING NO. 802, 44.15 FEET SOUTHEAST OF G
 JV5906'AND E POLE NO. 266087, 15.13 FEET NORTHWEST OF A PK NAIL IN THE
 JV5906'CURB, 12.36 FEET SOUTHWEST OF A PK NAIL IN THE CURB.
 JV5906
 JV5906                          STATION RECOVERY (1992)
 JV5906
 JV5906'RECOVERY NOTE BY US POWER SQUADRON 1992 (CW)
 JV5906'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5904 ***********************************************************************
 JV5904  DESIGNATION -  17437 WSSC 1970
 JV5904  PID         -  JV5904
 JV5904  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5904  COUNTRY     -  US
 JV5904  USGS QUAD   -  LAUREL (2016)
 JV5904
 JV5904                         *CURRENT SURVEY CONTROL
 JV5904  ______________________________________________________________________
 JV5904* NAD 83(1991) POSITION- 39 04 24.42117(N) 076 50 59.71116(W)   ADJUSTED
 JV5904* NAVD 88 ORTHO HEIGHT -    54.5   (meters)      179.    (feet) VERTCON3
 JV5904  ______________________________________________________________________
 JV5904  GEOID HEIGHT    -        -32.267 (meters)                     GEOID18
 JV5904  LAPLACE CORR    -         -5.19  (seconds)                    DEFLEC18
 JV5904  HORZ ORDER      -  SECOND
 JV5904
 JV5904.The horizontal coordinates were established by classical geodetic methods
 JV5904.and adjusted by the National Geodetic Survey in January 1992.
 JV5904
 JV5904.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5904.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5904
 JV5904.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5904.GEOID18 height accuracy estimate available here.
 JV5904
 JV5904.Click photographs - Photos may exist for this station.
 JV5904
 JV5904.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5904
 JV5904. The following values were computed from the NAD 83(1991) position.
 JV5904
 JV5904;                    North         East     Units Scale Factor Converg.
 JV5904;SPC MD       -   156,170.682   412,986.878   MT  0.99995578   +0 05 39.1
 JV5904;SPC MD       -   512,369.98  1,354,941.12   sFT  0.99995578   +0 05 39.1
 JV5904;UTM  18      - 4,326,556.185   339,972.178   MT  0.99991534   -1 09 58.6
 JV5904
 JV5904!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5904!SPC MD       -   0.99999652  x   0.99995578  =   0.99995230
 JV5904!UTM  18      -   0.99999652  x   0.99991534  =   0.99991186
 JV5904
 JV5904:                Primary Azimuth Mark                     Grid Az
 JV5904:SPC MD       -  STEWARD                                  017 11 14.1
 JV5904:UTM  18      -  STEWARD                                  018 26 51.8
 JV5904
 JV5904_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3997226556(NAD 83)
 JV5904
 JV5904|---------------------------------------------------------------------|
 JV5904| PID    Reference Object                     Distance      Geod. Az  |
 JV5904|                                                           dddmmss.s |
 JV5904| JV5871 STEWARD                             APPROX. 2.4 KM 0171653.2 |
 JV5904| JV5902 17438 WSSC 1970                     416.215 METERS 0853638.7 |
 JV5904|---------------------------------------------------------------------|
 JV5904
 JV5904                          SUPERSEDED SURVEY CONTROL
 JV5904
 JV5904  NAD 83(1986)-  39 04 24.41966(N)    076 50 59.72147(W) AD(       ) 2
 JV5904  NAD 27      -  39 04 24.02777(N)    076 51 00.82312(W) AD(       ) 2
 JV5904  NGVD 29 (07/19/86)   54.7    (m)          179.     (f) VERT ANG       
 JV5904
 JV5904.Superseded values are not recommended for survey control.
 JV5904
 JV5904.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5904.See file dsdata.pdf to determine how the superseded data were derived.
 JV5904
 JV5904_MARKER: N = NAIL
 JV5904_SETTING: 0 = UNSPECIFIED SETTING
 JV5904_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5904
 JV5904  HISTORY     - Date     Condition        Report By
 JV5904  HISTORY     - 1969     MONUMENTED       WSSC
 JV5904
 JV5904                          STATION DESCRIPTION
 JV5904
 JV5904'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5904'THE STATION IS LOCATED ON THE SOUTH SIDE OF CONTEE ROAD ABOUT
 JV5904'.70 MILES NORTHWEST OF MONTPELIER, 400 FEET WEST OF ROUTE 197.
 JV5904'
 JV5904'TO REACH THE STATION FROM ROUTE 197, GO WEST ON CONTEE ROAD FOR
 JV5904'400 FEET TO THE STATION ON THE LEFT.
 JV5904'
 JV5904'THE STATION MARK IS AN IRON PIPE WITH A PK NAIL IN THE CENTER.  IT
 JV5904'IS 67.84 FEET SOUTH OF G AND E POLE NO. 147643, 27.35 FEET NORTHWEST
 JV5904'OF AN X CUT IN THE TOP OF A BRICK WALL, 13.09 FEET NORTH OF AN X
 JV5904'CUT IN THE TOP OF A BRICK WALL, 19.91 FEET NORTHEAST OF AN X
 JV5904'CUT IN THE TOP OF A BRICK WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5902 ***********************************************************************
 JV5902  DESIGNATION -  17438 WSSC 1970
 JV5902  PID         -  JV5902
 JV5902  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5902  COUNTRY     -  US
 JV5902  USGS QUAD   -  LAUREL (2016)
 JV5902
 JV5902                         *CURRENT SURVEY CONTROL
 JV5902  ______________________________________________________________________
 JV5902* NAD 83(1991) POSITION- 39 04 25.45375(N) 076 50 42.44700(W)   ADJUSTED
 JV5902* NAVD 88 ORTHO HEIGHT -    45.0   (meters)      148.    (feet) VERTCON3
 JV5902  ______________________________________________________________________
 JV5902  GEOID HEIGHT    -        -32.280 (meters)                     GEOID18
 JV5902  LAPLACE CORR    -         -5.24  (seconds)                    DEFLEC18
 JV5902  HORZ ORDER      -  SECOND
 JV5902
 JV5902.The horizontal coordinates were established by classical geodetic methods
 JV5902.and adjusted by the National Geodetic Survey in January 1992.
 JV5902
 JV5902.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5902.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5902
 JV5902.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5902.GEOID18 height accuracy estimate available here.
 JV5902
 JV5902.Click photographs - Photos may exist for this station.
 JV5902
 JV5902.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5902
 JV5902. The following values were computed from the NAD 83(1991) position.
 JV5902
 JV5902;                    North         East     Units Scale Factor Converg.
 JV5902;SPC MD       -   156,203.216   413,401.801   MT  0.99995580   +0 05 49.9
 JV5902;SPC MD       -   512,476.72  1,356,302.41   sFT  0.99995580   +0 05 49.9
 JV5902;UTM  18      - 4,326,579.583   340,387.699   MT  0.99991370   -1 09 47.8
 JV5902
 JV5902!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5902!SPC MD       -   0.99999801  x   0.99995580  =   0.99995381
 JV5902!UTM  18      -   0.99999801  x   0.99991370  =   0.99991171
 JV5902
 JV5902_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4038726579(NAD 83)
 JV5902
 JV5902                          SUPERSEDED SURVEY CONTROL
 JV5902
 JV5902  NAD 83(1986)-  39 04 25.45220(N)    076 50 42.45730(W) AD(       ) 2
 JV5902  NAD 27      -  39 04 25.06034(N)    076 50 43.55950(W) AD(       ) 2
 JV5902  NGVD 29 (07/19/86)   45.2    (m)          148.     (f) VERT ANG       
 JV5902
 JV5902.Superseded values are not recommended for survey control.
 JV5902
 JV5902.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5902.See file dsdata.pdf to determine how the superseded data were derived.
 JV5902
 JV5902_MARKER: I = METAL ROD
 JV5902_SETTING: 0 = UNSPECIFIED SETTING
 JV5902_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5902
 JV5902  HISTORY     - Date     Condition        Report By
 JV5902  HISTORY     - 1969     MONUMENTED       WSSC
 JV5902
 JV5902                          STATION DESCRIPTION
 JV5902
 JV5902'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5902'THE STATION IS LOCATED .70 MILES NORTH OF MONTPELIER AND 500
 JV5902'FEET EAST OF ROUTE 197.
 JV5902'
 JV5902'TO REACH THE STATION FROM ROUTE 197, GO EAST ON THE ROAD LEADING
 JV5902'TO MISTLETOE (GARDEN APARTMENTS) FOR 500 FEET TO THE STATION ON
 JV5902'THE RIGHT.
 JV5902'
 JV5902'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5902'AND IS .2 FEET BELOW THE SURFACE.  IT IS 63.82 FEET SOUTHWEST
 JV5902'OF C AND P POLE NO. 3 (NAIL IN LEFT SIDE), 28.53 FEET NORTHEAST
 JV5902'OF THE NORTHWEST CORNER OF APARTMENT HOUSE NO. 13036, 40.34 FEET
 JV5902'NORTH OF THE CORNER OF APARTMENT HOUSE NO. 13036 AND 86.22 FEET
 JV5902'WEST OF THE CORNER OF THE SAME APARTMENT HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7414 ***********************************************************************
 HV7414  DESIGNATION -  17441 WSSC 1970
 HV7414  PID         -  HV7414
 HV7414  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7414  COUNTRY     -  US
 HV7414  USGS QUAD   -  BRANDYWINE (2016)
 HV7414
 HV7414                         *CURRENT SURVEY CONTROL
 HV7414  ______________________________________________________________________
 HV7414* NAD 83(1991) POSITION- 38 39 54.93980(N) 076 52 02.86272(W)   ADJUSTED
 HV7414* NAVD 88 ORTHO HEIGHT -    65.0   (meters)      213.    (feet) VERTCON3
 HV7414  ______________________________________________________________________
 HV7414  GEOID HEIGHT    -        -32.931 (meters)                     GEOID18
 HV7414  LAPLACE CORR    -         -5.66  (seconds)                    DEFLEC18
 HV7414  HORZ ORDER      -  SECOND
 HV7414
 HV7414.The horizontal coordinates were established by classical geodetic methods
 HV7414.and adjusted by the National Geodetic Survey in January 1992.
 HV7414
 HV7414.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7414.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7414
 HV7414.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7414.GEOID18 height accuracy estimate available here.
 HV7414
 HV7414.Click photographs - Photos may exist for this station.
 HV7414
 HV7414.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7414
 HV7414. The following values were computed from the NAD 83(1991) position.
 HV7414
 HV7414;                    North         East     Units Scale Factor Converg.
 HV7414;SPC MD       -   110,856.245   411,534.698   MT  0.99995656   +0 04 59.5
 HV7414;SPC MD       -   363,700.86  1,350,176.76   sFT  0.99995656   +0 04 59.5
 HV7414;UTM  18      - 4,281,285.877   337,527.666   MT  0.99992507   -1 10 01.2
 HV7414
 HV7414!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7414!SPC MD       -   0.99999497  x   0.99995656  =   0.99995153
 HV7414!UTM  18      -   0.99999497  x   0.99992507  =   0.99992004
 HV7414
 HV7414:                Primary Azimuth Mark                     Grid Az
 HV7414:SPC MD       -  SCHWIEN 2 RM 4                           252 29 35.3
 HV7414:UTM  18      -  SCHWIEN 2 RM 4                           253 44 36.0
 HV7414
 HV7414_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3752781285(NAD 83)
 HV7414
 HV7414|---------------------------------------------------------------------|
 HV7414| PID    Reference Object                     Distance      Geod. Az  |
 HV7414|                                                           dddmmss.s |
 HV7414| HV7396 SCHWIEN 2 RM 4                      APPROX. 0.6 KM 2523434.8 |
 HV7414| HV0837 SCHWIEN AZ MK                       101.189 METERS 25856     |
 HV7414|---------------------------------------------------------------------|
 HV7414
 HV7414                          SUPERSEDED SURVEY CONTROL
 HV7414
 HV7414  NAD 83(1986)-  38 39 54.93885(N)    076 52 02.87734(W) AD(       ) 2
 HV7414  NAD 27      -  38 39 54.51965(N)    076 52 03.98200(W) AD(       ) 2
 HV7414  NGVD 29 (07/19/86)   65.2    (m)          214.     (f) VERT ANG       
 HV7414
 HV7414.Superseded values are not recommended for survey control.
 HV7414
 HV7414.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7414.See file dsdata.pdf to determine how the superseded data were derived.
 HV7414
 HV7414_MARKER: I = METAL ROD
 HV7414_SETTING: 0 = UNSPECIFIED SETTING
 HV7414_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7414_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7414+SATELLITE: SATELLITE OBSERVATIONS - August 16, 2004
 HV7414
 HV7414  HISTORY     - Date     Condition        Report By
 HV7414  HISTORY     - 1969     MONUMENTED       WSSC
 HV7414  HISTORY     - 20040816 GOOD             GEOCAC
 HV7414
 HV7414                          STATION DESCRIPTION
 HV7414
 HV7414'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7414'THE STATION IS LOCATED ON THE NORTHEAST CORNER OF THE
 HV7414'INTERSECTION OF CEDARVILLE ROAD AND THE PENNSYLVANIA RAILROAD,
 HV7414'.5 MILES NORTHEAST OF THE PRINCE GEORGES AND CHARLES COUNTY
 HV7414'LINES AND .4 MILES EAST OF ROUE 301.
 HV7414'
 HV7414'TO REACH THE STATION FROM ROUTE 301, GO EAST ON CEDARVILLE
 HV7414'ROAD FOR .40 MILES TO THE STATION ON THE LEFT.
 HV7414'
 HV7414'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7414'AND IS .2 FEET BELOW THE SURFACE.  IT IS 40.80 FEET WEST OF THE
 HV7414'SOUTHWEST CORNER OF A PORCH, 61.48 FEET WEST OF THE SOUTHEAST
 HV7414'CORNER OF A PORCH, 83.50 FEET WEST OF A POLE, 89.20 FEET
 HV7414'NORTHWEST OF C AND P POLE NO. 9, 13.80 FEET EAST OF THE WEST
 HV7414'RAIL OF A TRACK, 68.34 FEET EAST OF A POLE, AND 88.78 FEET
 HV7414'NORTHEAST OF C AND P POLE NO. 8.
 HV7414
 HV7414                          STATION RECOVERY (2004)
 HV7414
 HV7414'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV7414'THERE IS NO LONGER A PORCH IN THE VICINITY OF THIS STATION.  THE MARK
 HV7414'LIES ABOUT NINE FEET NORTHEAST OF A METAL POLE THAT SUPPORTS A
 HV7414'RAILROAD CROSSING TRAFFIC SIGNAL, OTHERWISE AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7439 ***********************************************************************
 HV7439  DESIGNATION -  17442 WSSC 1970
 HV7439  PID         -  HV7439
 HV7439  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7439  COUNTRY     -  US
 HV7439  USGS QUAD   -  PISCATAWAY (2016)
 HV7439
 HV7439                         *CURRENT SURVEY CONTROL
 HV7439  ______________________________________________________________________
 HV7439* NAD 83(1991) POSITION- 38 40 12.97423(N) 076 52 35.34403(W)   ADJUSTED
 HV7439* NAVD 88 ORTHO HEIGHT -    62.3   (meters)      204.    (feet) VERTCON3
 HV7439  ______________________________________________________________________
 HV7439  GEOID HEIGHT    -        -32.890 (meters)                     GEOID18
 HV7439  LAPLACE CORR    -         -5.72  (seconds)                    DEFLEC18
 HV7439  HORZ ORDER      -  SECOND
 HV7439
 HV7439.The horizontal coordinates were established by classical geodetic methods
 HV7439.and adjusted by the National Geodetic Survey in January 1992.
 HV7439
 HV7439.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7439.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7439
 HV7439.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7439.GEOID18 height accuracy estimate available here.
 HV7439
 HV7439.Click photographs - Photos may exist for this station.
 HV7439
 HV7439.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7439
 HV7439. The following values were computed from the NAD 83(1991) position.
 HV7439
 HV7439;                    North         East     Units Scale Factor Converg.
 HV7439;SPC MD       -   111,411.227   410,748.717   MT  0.99995625   +0 04 39.1
 HV7439;SPC MD       -   365,521.67  1,347,598.08   sFT  0.99995625   +0 04 39.1
 HV7439;UTM  18      - 4,281,857.858   336,754.005   MT  0.99992818   -1 10 21.9
 HV7439
 HV7439!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7439!SPC MD       -   0.99999539  x   0.99995625  =   0.99995164
 HV7439!UTM  18      -   0.99999539  x   0.99992818  =   0.99992357
 HV7439
 HV7439:                Primary Azimuth Mark                     Grid Az
 HV7439:SPC MD       -  SCHWIEN 2 RM 4                           164 51 20.3
 HV7439:UTM  18      -  SCHWIEN 2 RM 4                           166 06 21.3
 HV7439
 HV7439_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3675481857(NAD 83)
 HV7439
 HV7439|---------------------------------------------------------------------|
 HV7439| PID    Reference Object                     Distance      Geod. Az  |
 HV7439|                                                           dddmmss.s |
 HV7439| HV7437 15771 WSSC 1970                     330.089 METERS 00631     |
 HV7439| HV7396 SCHWIEN 2 RM 4                      APPROX. 0.8 KM 1645559.4 |
 HV7439|---------------------------------------------------------------------|
 HV7439
 HV7439                          SUPERSEDED SURVEY CONTROL
 HV7439
 HV7439  NAD 83(1986)-  38 40 12.97322(N)    076 52 35.35907(W) AD(       ) 2
 HV7439  NAD 27      -  38 40 12.55455(N)    076 52 36.46233(W) AD(       ) 2
 HV7439  NGVD 29 (07/19/86)   62.5    (m)          205.     (f) VERT ANG       
 HV7439
 HV7439.Superseded values are not recommended for survey control.
 HV7439
 HV7439.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7439.See file dsdata.pdf to determine how the superseded data were derived.
 HV7439
 HV7439_MARKER: I = METAL ROD
 HV7439_SETTING: 0 = UNSPECIFIED SETTING
 HV7439_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7439_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7439+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2004
 HV7439
 HV7439  HISTORY     - Date     Condition        Report By
 HV7439  HISTORY     - 1969     MONUMENTED       WSSC
 HV7439  HISTORY     - 20040726 GOOD             GEOCAC
 HV7439
 HV7439                          STATION DESCRIPTION
 HV7439
 HV7439'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7439'THE STATION IS LOCATED 2.2 MILES SOUTH OF TB ON THE WEST SIDE OF
 HV7439'ROUTE 301.
 HV7439'
 HV7439'TO REACH THE STATION FROM THE INTERSECTION OF CEDARVILLE ROAD AND
 HV7439'ROUTE 301, GO NORTH ON ROUTE 301 FOR .45 MILES TO THE STATION ON
 HV7439'THE LEFT.
 HV7439'
 HV7439'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7439'AND IS SET FLUSH WITH THE SURFACE.  IT IS AT MARYLAND MOTOR COURT,
 HV7439'92.58 FEET SOUTHEAST OF THE CORNER OF A MOTOR UNIT, 88.64 FEET
 HV7439'SOUTHEAST OF A CORNER OF A MOTOR UNIT, 22.01 FEET SOUTHEAST OF
 HV7439'POLE NO. 3, 33,94 FEET NORTHWEST OF A CORNER AT THE WEST END OF
 HV7439'A CONCRETE HEADWALL, 31.03 FEET NORTHEAST OF THE FACE OF EAST
 HV7439'SIGN POST, AND 38.01 FEET NORTHEAST OF THE FACE OF WEST SIGN
 HV7439'POST.
 HV7439
 HV7439                          STATION RECOVERY (2004)
 HV7439
 HV7439'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV7439'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7440 ***********************************************************************
 HV7440  DESIGNATION -  17443 WSSC 1970
 HV7440  PID         -  HV7440
 HV7440  STATE/COUNTY-  MD/CHARLES
 HV7440  COUNTRY     -  US
 HV7440  USGS QUAD   -  PISCATAWAY (2016)
 HV7440
 HV7440                         *CURRENT SURVEY CONTROL
 HV7440  ______________________________________________________________________
 HV7440* NAD 83(1991) POSITION- 38 38 59.67027(N) 076 53 04.13259(W)   ADJUSTED
 HV7440* NAVD 88 ORTHO HEIGHT -    64.9   (meters)      213.    (feet) VERTCON3
 HV7440  ______________________________________________________________________
 HV7440  GEOID HEIGHT    -        -32.923 (meters)                     GEOID18
 HV7440  LAPLACE CORR    -         -5.68  (seconds)                    DEFLEC18
 HV7440  HORZ ORDER      -  SECOND
 HV7440
 HV7440.The horizontal coordinates were established by classical geodetic methods
 HV7440.and adjusted by the National Geodetic Survey in January 1992.
 HV7440
 HV7440.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7440.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7440
 HV7440.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7440.GEOID18 height accuracy estimate available here.
 HV7440
 HV7440.Click photographs - Photos may exist for this station.
 HV7440
 HV7440.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7440
 HV7440. The following values were computed from the NAD 83(1991) position.
 HV7440
 HV7440;                    North         East     Units Scale Factor Converg.
 HV7440;SPC MD       -   109,150.026   410,055.668   MT  0.99995758   +0 04 21.0
 HV7440;SPC MD       -   358,103.04  1,345,324.30   sFT  0.99995758   +0 04 21.0
 HV7440;UTM  18      - 4,279,612.376   336,011.813   MT  0.99993117   -1 10 38.0
 HV7440
 HV7440!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7440!SPC MD       -   0.99999499  x   0.99995758  =   0.99995257
 HV7440!UTM  18      -   0.99999499  x   0.99993117  =   0.99992616
 HV7440
 HV7440:                Primary Azimuth Mark                     Grid Az
 HV7440:SPC MD       -  SCHWIEN 2 RM 4                           030 25 04.5
 HV7440:UTM  18      -  SCHWIEN 2 RM 4                           031 40 03.5
 HV7440
 HV7440_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3601179612(NAD 83)
 HV7440
 HV7440|---------------------------------------------------------------------|
 HV7440| PID    Reference Object                     Distance      Geod. Az  |
 HV7440|                                                           dddmmss.s |
 HV7440| HV7396 SCHWIEN 2 RM 4                      APPROX. 1.8 KM 0302925.5 |
 HV7440| HV7431 WALDORF ST POLICE RAD MAST          425.081 METERS 0694422.1 |
 HV7440|---------------------------------------------------------------------|
 HV7440
 HV7440                          SUPERSEDED SURVEY CONTROL
 HV7440
 HV7440  NAD 83(1986)-  38 38 59.66929(N)    076 53 04.14783(W) AD(       ) 2
 HV7440  NAD 27      -  38 38 59.24893(N)    076 53 05.25163(W) AD(       ) 2
 HV7440  NGVD 29 (07/19/86)   65.1    (m)          214.     (f) VERT ANG       
 HV7440
 HV7440.Superseded values are not recommended for survey control.
 HV7440
 HV7440.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7440.See file dsdata.pdf to determine how the superseded data were derived.
 HV7440
 HV7440_MARKER: I = METAL ROD
 HV7440_SETTING: 0 = UNSPECIFIED SETTING
 HV7440_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7440
 HV7440  HISTORY     - Date     Condition        Report By
 HV7440  HISTORY     - 1969     MONUMENTED       WSSC
 HV7440  HISTORY     - 20040726 MARK NOT FOUND   GEOCAC
 HV7440
 HV7440                          STATION DESCRIPTION
 HV7440
 HV7440'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7440'THE STATION IS LOCATED 2.2 MILES NORTHEAST OF WALDORF ON THE
 HV7440'SOUTHEAST SIDE OF ROUTE 301.
 HV7440'
 HV7440'TO REACH THE STATION FROM THE INTERSECTION OF ACTON LANE AND
 HV7440'ROUTE 301, GO NORTHEAST ON ROUTE 301 FOR 1.05 MILES TO THE
 HV7440'STATION ON THE RIGHT.
 HV7440'
 HV7440'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7440'AND IS SET FLUSH WITH THE SURFACE.  IT IS IN AN ISLAND AT THE
 HV7440'ENTRANCE TO A SMALL SHOPPING CENTER, 12.60 FEET WEST OF A
 HV7440'TELEPHONE MARKER, 6.80 FEET EAST OF THE WEST CURB, 81.72 FEET
 HV7440'WEST OF THE SOUTHWEST CORNER OF A BUILDING, AND 64.58 FEET
 HV7440'NORTH OF A CORNER OF A SIGN POST.
 HV7440
 HV7440                          STATION RECOVERY (2004)
 HV7440
 HV7440'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV7440'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4984 ***********************************************************************
 HV4984  DESIGNATION -  17446 WSSC 1970
 HV4984  PID         -  HV4984
 HV4984  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4984  COUNTRY     -  US
 HV4984  USGS QUAD   -  MOUNT VERNON (2019)
 HV4984
 HV4984                         *CURRENT SURVEY CONTROL
 HV4984  ______________________________________________________________________
 HV4984* NAD 83(1993) POSITION- 38 43 26.46978(N) 077 00 32.74717(W)   ADJUSTED
 HV4984* NAVD 88 ORTHO HEIGHT -    14.0   (meters)       46.    (feet) VERTCON3
 HV4984  ______________________________________________________________________
 HV4984  GEOID HEIGHT    -        -32.443 (meters)                     GEOID18
 HV4984  LAPLACE CORR    -         -2.73  (seconds)                    DEFLEC18
 HV4984  HORZ ORDER      -  SECOND
 HV4984
 HV4984.The horizontal coordinates were established by classical geodetic methods
 HV4984.and adjusted by the National Geodetic Survey in November 1994.
 HV4984
 HV4984.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4984.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4984
 HV4984.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4984.GEOID18 height accuracy estimate available here.
 HV4984
 HV4984.Click photographs - Photos may exist for this station.
 HV4984
 HV4984.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4984
 HV4984. The following values were computed from the NAD 83(1993) position.
 HV4984
 HV4984;                    North         East     Units Scale Factor Converg.
 HV4984;SPC MD       -   117,370.359   399,208.993   MT  0.99995334   -0 00 20.6
 HV4984;SPC MD       -   385,072.59  1,309,738.17   sFT  0.99995334   -0 00 20.6
 HV4984;UTM  18      - 4,288,067.459   325,347.152   MT  0.99997564   -1 15 25.7
 HV4984
 HV4984!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4984!SPC MD       -   1.00000290  x   0.99995334  =   0.99995624
 HV4984!UTM  18      -   1.00000290  x   0.99997564  =   0.99997854
 HV4984
 HV4984:                Primary Azimuth Mark                     Grid Az
 HV4984:SPC MD       -  TREGO                                    198 34 28.2
 HV4984:UTM  18      -  TREGO                                    199 49 33.3
 HV4984
 HV4984_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2534788067(NAD 83)
 HV4984
 HV4984|---------------------------------------------------------------------|
 HV4984| PID    Reference Object                     Distance      Geod. Az  |
 HV4984|                                                           dddmmss.s |
 HV4984| HV4985 17447 WSSC 1970                     366.963 METERS 19715     |
 HV4984| HV4982 TREGO                               APPROX. 1.8 KM 1983407.6 |
 HV4984|---------------------------------------------------------------------|
 HV4984
 HV4984                          SUPERSEDED SURVEY CONTROL
 HV4984
 HV4984  NAD 83(1991)-  38 43 26.46831(N)    077 00 32.74844(W) AD(       ) 2
 HV4984  NAD 83(1986)-  38 43 26.46852(N)    077 00 32.76142(W) AD(       ) 2
 HV4984  NAD 27      -  38 43 26.05564(N)    077 00 33.84853(W) AD(       ) 2
 HV4984  NGVD 29 (07/19/86)   14.2    (m)           47.     (f) VERT ANG       
 HV4984
 HV4984.Superseded values are not recommended for survey control.
 HV4984
 HV4984.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4984.See file dsdata.pdf to determine how the superseded data were derived.
 HV4984
 HV4984_MARKER: I = METAL ROD
 HV4984_SETTING: 0 = UNSPECIFIED SETTING
 HV4984_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4984
 HV4984  HISTORY     - Date     Condition        Report By
 HV4984  HISTORY     - 1969     MONUMENTED       WSSC
 HV4984
 HV4984                          STATION DESCRIPTION
 HV4984
 HV4984'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4984'THE STATION IS LOCATED AT TANTALLON, 1500 FEET WEST OF FORT
 HV4984'WASHINGTON ROAD AND 550 FEET SOUTHWEST OF SWAN CREEK ROAD.
 HV4984'
 HV4984'TO REACH THE STATION FROM SWAN CREEK ROAD, GO SOUTHWEST ON
 HV4984'ARROW PARK DRIVE FOR 550 FEET TO THE STATION ON THE LEFT.
 HV4984'
 HV4984'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4984'AND IS .2 FEET BELOW THE SURFACE.  IT IS 74.30 FEET SOUTHEAST
 HV4984'OF THE CORNER OF THE BOTTOM STEP, 42.62 FEET SOUTHWEST OF POLE
 HV4984'NO. P-13315, 75.90 FEET SOUTHWEST OF THE CORNER OF THE BOTTOM
 HV4984'STEP, 4.61 FEET NORTHWEST OF A 1-INCH MAPLE, AND 35.55 FEET EAST
 HV4984'OF A FIRE HYDRANT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4985 ***********************************************************************
 HV4985  DESIGNATION -  17447 WSSC 1970
 HV4985  PID         -  HV4985
 HV4985  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4985  COUNTRY     -  US
 HV4985  USGS QUAD   -  MOUNT VERNON (2019)
 HV4985
 HV4985                         *CURRENT SURVEY CONTROL
 HV4985  ______________________________________________________________________
 HV4985* NAD 83(1993) POSITION- 38 43 15.10428(N) 077 00 37.25035(W)   ADJUSTED
 HV4985* NAVD 88 ORTHO HEIGHT -     8.3   (meters)       27.    (feet) VERTCON3
 HV4985  ______________________________________________________________________
 HV4985  GEOID HEIGHT    -        -32.447 (meters)                     GEOID18
 HV4985  LAPLACE CORR    -         -2.71  (seconds)                    DEFLEC18
 HV4985  HORZ ORDER      -  SECOND
 HV4985
 HV4985.The horizontal coordinates were established by classical geodetic methods
 HV4985.and adjusted by the National Geodetic Survey in November 1994.
 HV4985
 HV4985.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4985.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4985
 HV4985.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4985.GEOID18 height accuracy estimate available here.
 HV4985
 HV4985.Click photographs - Photos may exist for this station.
 HV4985
 HV4985.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4985
 HV4985. The following values were computed from the NAD 83(1993) position.
 HV4985
 HV4985;                    North         East     Units Scale Factor Converg.
 HV4985;SPC MD       -   117,019.918   399,100.180   MT  0.99995349   -0 00 23.4
 HV4985;SPC MD       -   383,922.85  1,309,381.17   sFT  0.99995349   -0 00 23.4
 HV4985;UTM  18      - 4,287,719.471   325,230.708   MT  0.99997614   -1 15 28.2
 HV4985
 HV4985!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4985!SPC MD       -   1.00000380  x   0.99995349  =   0.99995729
 HV4985!UTM  18      -   1.00000380  x   0.99997614  =   0.99997994
 HV4985
 HV4985_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2523087719(NAD 83)
 HV4985
 HV4985|---------------------------------------------------------------------|
 HV4985| PID    Reference Object                     Distance      Geod. Az  |
 HV4985|                                                           dddmmss.s |
 HV4985| HV4984 17446 WSSC 1970                     366.963 METERS 01715     |
 HV4985|---------------------------------------------------------------------|
 HV4985
 HV4985                          SUPERSEDED SURVEY CONTROL
 HV4985
 HV4985  NAD 83(1991)-  38 43 15.10281(N)    077 00 37.25161(W) AD(       ) 2
 HV4985  NAD 83(1986)-  38 43 15.10302(N)    077 00 37.26462(W) AD(       ) 2
 HV4985  NAD 27      -  38 43 14.69002(N)    077 00 38.35181(W) AD(       ) 2
 HV4985  NGVD 29 (07/19/86)    8.5    (m)           28.     (f) VERT ANG       
 HV4985
 HV4985.Superseded values are not recommended for survey control.
 HV4985
 HV4985.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4985.See file dsdata.pdf to determine how the superseded data were derived.
 HV4985
 HV4985_MARKER: I = METAL ROD
 HV4985_SETTING: 0 = UNSPECIFIED SETTING
 HV4985_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4985
 HV4985  HISTORY     - Date     Condition        Report By
 HV4985  HISTORY     - 1969     MONUMENTED       WSSC
 HV4985
 HV4985                          STATION DESCRIPTION
 HV4985
 HV4985'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4985'THE STATION IS LOCATED AT TANTALLON, 1600 FEET WEST OF FORT
 HV4985'WASHINGTON ROAD, 2400 FEET SOUTH OF SWAN CREEK ROAD.
 HV4985'
 HV4985'TO REACH THE STATION FROM ARROW PARK DRIVE, GO EAST ON TANTALLON
 HV4985'DRIVE FOR 325 FEET TO THE STATION ON THE LEFT.
 HV4985'
 HV4985'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV4985'AND IS .2 FEET BELOW THE SURFACE.  IT IS 84.98 FEET EAST OF POLE
 HV4985'NO. P-10129, 24.65 FEET WEST OF A 14-INCH MAPLE, 91.29 FEET WEST
 HV4985'OF A 14-INCH TWIN BEECH, 88.88 FEET NORTH OF AN 18 INCH POPLAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7453 ***********************************************************************
 HV7453  DESIGNATION -  17448 WSSC 1970
 HV7453  PID         -  HV7453
 HV7453  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7453  COUNTRY     -  US
 HV7453  USGS QUAD   -  PISCATAWAY (2016)
 HV7453
 HV7453                         *CURRENT SURVEY CONTROL
 HV7453  ______________________________________________________________________
 HV7453* NAD 83(1993) POSITION- 38 44 40.20615(N) 076 59 32.26240(W)   ADJUSTED
 HV7453* NAVD 88 ORTHO HEIGHT -    34.5   (meters)      113.    (feet) VERTCON3
 HV7453  ______________________________________________________________________
 HV7453  GEOID HEIGHT    -        -32.426 (meters)                     GEOID18
 HV7453  LAPLACE CORR    -         -2.72  (seconds)                    DEFLEC18
 HV7453  HORZ ORDER      -  SECOND
 HV7453
 HV7453.The horizontal coordinates were established by classical geodetic methods
 HV7453.and adjusted by the National Geodetic Survey in November 1994.
 HV7453
 HV7453.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7453.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7453
 HV7453.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7453.GEOID18 height accuracy estimate available here.
 HV7453
 HV7453.Click photographs - Photos may exist for this station.
 HV7453
 HV7453.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7453
 HV7453. The following values were computed from the NAD 83(1993) position.
 HV7453
 HV7453;                    North         East     Units Scale Factor Converg.
 HV7453;SPC MD       -   119,643.992   400,669.809   MT  0.99995246   +0 00 17.4
 HV7453;SPC MD       -   392,532.00  1,314,530.87   sFT  0.99995246   +0 00 17.4
 HV7453;UTM  18      - 4,290,308.682   326,857.316   MT  0.99996917   -1 14 49.9
 HV7453
 HV7453!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7453!SPC MD       -   0.99999968  x   0.99995246  =   0.99995214
 HV7453!UTM  18      -   0.99999968  x   0.99996917  =   0.99996885
 HV7453
 HV7453:                Primary Azimuth Mark                     Grid Az
 HV7453:SPC MD       -  TREGO                                    207 01 04.4
 HV7453:UTM  18      -  TREGO                                    208 16 11.7
 HV7453
 HV7453_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2685790308(NAD 83)
 HV7453
 HV7453|---------------------------------------------------------------------|
 HV7453| PID    Reference Object                     Distance      Geod. Az  |
 HV7453|                                                           dddmmss.s |
 HV7453| HV4982 TREGO                               APPROX. 4.5 KM 2070121.8 |
 HV7453|---------------------------------------------------------------------|
 HV7453
 HV7453                          SUPERSEDED SURVEY CONTROL
 HV7453
 HV7453  NAD 83(1991)-  38 44 40.20471(N)    076 59 32.26374(W) AD(       ) 2
 HV7453  NAD 83(1986)-  38 44 40.20478(N)    076 59 32.27643(W) AD(       ) 2
 HV7453  NAD 27      -  38 44 39.79286(N)    076 59 33.36500(W) AD(       ) 2
 HV7453  NGVD 29 (07/19/86)   34.7    (m)          114.     (f) VERT ANG       
 HV7453
 HV7453.Superseded values are not recommended for survey control.
 HV7453
 HV7453.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7453.See file dsdata.pdf to determine how the superseded data were derived.
 HV7453
 HV7453_MARKER: I = METAL ROD
 HV7453_SETTING: 0 = UNSPECIFIED SETTING
 HV7453_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7453_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7453+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2004
 HV7453
 HV7453  HISTORY     - Date     Condition        Report By
 HV7453  HISTORY     - 1969     MONUMENTED       WSSC
 HV7453  HISTORY     - 20040726 GOOD             GEOCAC
 HV7453
 HV7453                          STATION DESCRIPTION
 HV7453
 HV7453'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7453'THE STATION IS LOCATED EAST OF HARMONY HALL ON THE WEST SIDE OF
 HV7453'ROUTE 210 (INDIAN HEAD HIGHWAY) AT FORT WASHINGTON SHOPPING CENTER.
 HV7453'
 HV7453'TO REACH THE STATION FROM FORT WASHINGTON ROAD, GO NORTH ON
 HV7453'THE SERVICE DRIVE FOR 500 FEET TO THE STATION ON THE RIGHT.
 HV7453'
 HV7453'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7453'AND IS .2 FEET BELOW THE SURFACE.  IT IS 53.59 FEET WEST OF AN
 HV7453'X CUT IN THE BASE OF A LIGHT POST, 16.69 FEET SOUTH OF A PK NAIL
 HV7453'IN THE CURB, 6.98 FEET SOUTHEAST OF A PK NAIL IN THE CURB, AND
 HV7453'4.34 FEET NORTHEAST OF A PK NAIL IN THE CURB.
 HV7453
 HV7453                          STATION RECOVERY (2004)
 HV7453
 HV7453'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV7453'THE 1969 DESCRIPTION IS CORRECTED AS FOLLOWS,  STATION IS LOCATED 2.75
 HV7453'FEET (0.84 M) EAST OF THE EDGE OF THE CURB ON THE EAST SIDE OF THE
 HV7453'SERVICE ROAD, 7.0 FEET (2.13 M) SOUTH-SOUTHEAST OF A NAIL IN A CURB
 HV7453'JOINT, 7.25 FEET (2.21 M) WEST-NORTHWEST OF AN EIGHT-INCH TREE,
 HV7453'19.5 FEET (5.94 M) SOUTH-SOUTHWEST OF A TEN-INCH TREE STUMP, 53.5 FEET
 HV7453'(16.31 M) EAST OF A ROUND CONCRETE LIGHT-POLE BASE, ABOUT 119 FEET
 HV7453'(36.27 M) SOUTH OF THE EAST END OF A GUARDRAIL AT THE NORTH TERMINUS
 HV7453'OF THE SERVICE ROAD, AND THREE INCHES BELOW THE SURFACE.  THE TO REACH
 HV7453'INSTRUCTIONS ARE GOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7452 ***********************************************************************
 HV7452  DESIGNATION -  17449 WSSC 1970
 HV7452  PID         -  HV7452
 HV7452  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7452  COUNTRY     -  US
 HV7452  USGS QUAD   -  PISCATAWAY (2016)
 HV7452
 HV7452                         *CURRENT SURVEY CONTROL
 HV7452  ______________________________________________________________________
 HV7452* NAD 83(1993) POSITION- 38 43 04.52986(N) 076 59 23.06145(W)   ADJUSTED
 HV7452* NAVD 88 ORTHO HEIGHT -    47.0   (meters)      154.    (feet) VERTCON3
 HV7452  ______________________________________________________________________
 HV7452  GEOID HEIGHT    -        -32.484 (meters)                     GEOID18
 HV7452  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 HV7452  HORZ ORDER      -  SECOND
 HV7452
 HV7452.The horizontal coordinates were established by classical geodetic methods
 HV7452.and adjusted by the National Geodetic Survey in November 1994.
 HV7452
 HV7452.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7452.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7452
 HV7452.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7452.GEOID18 height accuracy estimate available here.
 HV7452
 HV7452.Click photographs - Photos may exist for this station.
 HV7452
 HV7452.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7452
 HV7452. The following values were computed from the NAD 83(1993) position.
 HV7452
 HV7452;                    North         East     Units Scale Factor Converg.
 HV7452;SPC MD       -   116,693.858   400,892.325   MT  0.99995363   +0 00 23.2
 HV7452;SPC MD       -   382,853.10  1,315,260.90   sFT  0.99995363   +0 00 23.2
 HV7452;UTM  18      - 4,287,354.344   327,015.339   MT  0.99996850   -1 14 41.5
 HV7452
 HV7452!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7452!SPC MD       -   0.99999773  x   0.99995363  =   0.99995136
 HV7452!UTM  18      -   0.99999773  x   0.99996850  =   0.99996623
 HV7452
 HV7452_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2701587354(NAD 83)
 HV7452
 HV7452                          SUPERSEDED SURVEY CONTROL
 HV7452
 HV7452  NAD 83(1991)-  38 43 04.52843(N)    076 59 23.06270(W) AD(       ) 2
 HV7452  NAD 83(1986)-  38 43 04.52847(N)    076 59 23.07571(W) AD(       ) 2
 HV7452  NAD 27      -  38 43 04.11499(N)    076 59 24.16575(W) AD(       ) 2
 HV7452  NGVD 29 (07/19/86)   47.2    (m)          155.     (f) VERT ANG       
 HV7452
 HV7452.Superseded values are not recommended for survey control.
 HV7452
 HV7452.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7452.See file dsdata.pdf to determine how the superseded data were derived.
 HV7452
 HV7452_MARKER: I = METAL ROD
 HV7452_SETTING: 0 = UNSPECIFIED SETTING
 HV7452_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7452
 HV7452  HISTORY     - Date     Condition        Report By
 HV7452  HISTORY     - 1969     MONUMENTED       WSSC
 HV7452
 HV7452                          STATION DESCRIPTION
 HV7452
 HV7452'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7452'THE STATION IS LOCATED ABOUT .50 MILES NORTHWEST OF FORT
 HV7452'WASHINGTON FOREST ON THE EAST SIDE OF INDIAN HEAD HIGHWAY, .4
 HV7452'MILES NORTH OF OLD FORT ROAD.
 HV7452'
 HV7452'TO REACH THE STATION FROM THE INTERSECTION OF OLD FORT ROAD,
 HV7452'GO NORTH ON INDIAN HEAD HIGHWAY FOR .4 MILES TO THE STATION ON
 HV7452'THE RIGHT.
 HV7452'
 HV7452'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7452'AND IS .8 FEET BELOW THE SURFACE.  IT IS A WITNESS POST, 2.58 FEET
 HV7452'EAST OF AN X CUT IN THE TOP OF AN I BEAM GUARD RAIL OF THE 16TH
 HV7452'POST FROM THE SOUTH END, 13.25 FEET NORTHEAST OF AN X CUT IN AN
 HV7452'I BEAM, AND 12.23 FEET SOUTHEAST OF AN X CUT IN AN I BEAM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4986 ***********************************************************************
 HV4986  DESIGNATION -  17450 WSSC 1970
 HV4986  PID         -  HV4986
 HV4986  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4986  COUNTRY     -  US
 HV4986  USGS QUAD   -  MOUNT VERNON (2019)
 HV4986
 HV4986                         *CURRENT SURVEY CONTROL
 HV4986  ______________________________________________________________________
 HV4986* NAD 83(1993) POSITION- 38 41 03.57682(N) 077 01 53.63701(W)   ADJUSTED
 HV4986* NAVD 88 ORTHO HEIGHT -    55.3   (meters)      181.    (feet) VERTCON3
 HV4986  ______________________________________________________________________
 HV4986  GEOID HEIGHT    -        -32.487 (meters)                     GEOID18
 HV4986  LAPLACE CORR    -         -2.55  (seconds)                    DEFLEC18
 HV4986  HORZ ORDER      -  SECOND
 HV4986
 HV4986.The horizontal coordinates were established by classical geodetic methods
 HV4986.and adjusted by the National Geodetic Survey in November 1994.
 HV4986
 HV4986.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4986.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4986
 HV4986.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4986.GEOID18 height accuracy estimate available here.
 HV4986
 HV4986.Click photographs - Photos may exist for this station.
 HV4986
 HV4986.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4986
 HV4986. The following values were computed from the NAD 83(1993) position.
 HV4986
 HV4986;                    North         East     Units Scale Factor Converg.
 HV4986;SPC MD       -   112,964.739   397,253.579   MT  0.99995540   -0 01 11.3
 HV4986;SPC MD       -   370,618.48  1,303,322.78   sFT  0.99995540   -0 01 11.3
 HV4986;UTM  18      - 4,283,705.463   323,295.975   MT  0.99998452   -1 16 12.4
 HV4986
 HV4986!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4986!SPC MD       -   0.99999641  x   0.99995540  =   0.99995181
 HV4986!UTM  18      -   0.99999641  x   0.99998452  =   0.99998093
 HV4986
 HV4986:                Primary Azimuth Mark                     Grid Az
 HV4986:SPC MD       -  FORT WASH ESTATES WSSC TANK              027 33 01.1
 HV4986:UTM  18      -  FORT WASH ESTATES WSSC TANK              028 48 02.2
 HV4986
 HV4986_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2329583705(NAD 83)
 HV4986
 HV4986|---------------------------------------------------------------------|
 HV4986| PID    Reference Object                     Distance      Geod. Az  |
 HV4986|                                                           dddmmss.s |
 HV4986| HV4981 FORT WASH ESTATES WSSC TANK         APPROX. 3.0 KM 0273149.8 |
 HV4986| HV4988 17542 WSSC 1970                     218.390 METERS 32829     |
 HV4986|---------------------------------------------------------------------|
 HV4986
 HV4986                          SUPERSEDED SURVEY CONTROL
 HV4986
 HV4986  NAD 83(1991)-  38 41 03.57531(N)    077 01 53.63814(W) AD(       ) 2
 HV4986  NAD 83(1986)-  38 41 03.57571(N)    077 01 53.65171(W) AD(       ) 2
 HV4986  NAD 27      -  38 41 03.16094(N)    077 01 54.73714(W) AD(       ) 2
 HV4986  NGVD 29 (07/19/86)   55.6    (m)          182.     (f) VERT ANG       
 HV4986
 HV4986.Superseded values are not recommended for survey control.
 HV4986
 HV4986.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4986.See file dsdata.pdf to determine how the superseded data were derived.
 HV4986
 HV4986_MARKER: I = METAL ROD
 HV4986_SETTING: 0 = UNSPECIFIED SETTING
 HV4986_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4986
 HV4986  HISTORY     - Date     Condition        Report By
 HV4986  HISTORY     - 1969     MONUMENTED       WSSC
 HV4986
 HV4986                          STATION DESCRIPTION
 HV4986
 HV4986'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4986'THE STATION IS LOCATED 1 MILES NORTH OF ACCOKEEK ON THE SOUTH
 HV4986'SIDE OF BRYANT POINT ROAD, .8 MILES NORTHWEST OF FARMINGTON ROAD.
 HV4986'
 HV4986'TO REACH THE STATION FROM FARMINGTON ROAD, GO NORTHWEST ON
 HV4986'BRYANT POINT ROAD FOR .80 MILES TO THE STATION ON THE LEFT.
 HV4986'
 HV4986'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV4986'CENTER AND IS .2 FEET BELOW THE SURFACE.  IT IS 70.02 FEET
 HV4986'SOUTHEAST OF POLE NO. 26, 87.75 FEET EAST OF A TACK IN A FENCE
 HV4986'POST, 53.58 FEET EAST OF A 12-INCH OAK, 21.70 FEET NORTH OF A
 HV4986'12-INCH OAK, AND 35.83 FEET WEST OF A 10-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7639 ***********************************************************************
 HV7639  DESIGNATION -  17451 WSSC 1970
 HV7639  PID         -  HV7639
 HV7639  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7639  COUNTRY     -  US
 HV7639  USGS QUAD   -  ANACOSTIA (2016)
 HV7639
 HV7639                         *CURRENT SURVEY CONTROL
 HV7639  ______________________________________________________________________
 HV7639* NAD 83(1993) POSITION- 38 46 53.27326(N) 076 59 34.46909(W)   ADJUSTED
 HV7639* NAVD 88 ORTHO HEIGHT -    46.7   (meters)      153.    (feet) VERTCON3
 HV7639  ______________________________________________________________________
 HV7639  GEOID HEIGHT    -        -32.351 (meters)                     GEOID18
 HV7639  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 HV7639  HORZ ORDER      -  SECOND
 HV7639
 HV7639.The horizontal coordinates were established by classical geodetic methods
 HV7639.and adjusted by the National Geodetic Survey in November 1994.
 HV7639
 HV7639.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7639.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7639
 HV7639.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7639.GEOID18 height accuracy estimate available here.
 HV7639
 HV7639.Click photographs - Photos may exist for this station.
 HV7639
 HV7639.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7639
 HV7639. The following values were computed from the NAD 83(1993) position.
 HV7639
 HV7639;                    North         East     Units Scale Factor Converg.
 HV7639;SPC MD       -   123,747.098   400,616.203   MT  0.99995120   +0 00 16.0
 HV7639;SPC MD       -   405,993.60  1,314,354.99   sFT  0.99995120   +0 00 16.0
 HV7639;UTM  18      - 4,294,412.050   326,893.412   MT  0.99996901   -1 14 54.9
 HV7639
 HV7639!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7639!SPC MD       -   0.99999774  x   0.99995120  =   0.99994894
 HV7639!UTM  18      -   0.99999774  x   0.99996901  =   0.99996675
 HV7639
 HV7639:                Primary Azimuth Mark                     Grid Az
 HV7639:SPC MD       -  TUCKER 2 RM 4                            110 17 31.9
 HV7639:UTM  18      -  TUCKER 2 RM 4                            111 32 42.8
 HV7639
 HV7639_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2689394412(NAD 83)
 HV7639
 HV7639|---------------------------------------------------------------------|
 HV7639| PID    Reference Object                     Distance      Geod. Az  |
 HV7639|                                                           dddmmss.s |
 HV7639| HV7589 TUCKER 2 RM 4                       APPROX. 1.7 KM 1101747.9 |
 HV7639| HV7640 17452 WSSC 1970                     132.470 METERS 19352     |
 HV7639|---------------------------------------------------------------------|
 HV7639
 HV7639                          SUPERSEDED SURVEY CONTROL
 HV7639
 HV7639  NAD 83(1991)-  38 46 53.27205(N)    076 59 34.46996(W) AD(       ) 2
 HV7639  NAD 83(1986)-  38 46 53.27166(N)    076 59 34.48268(W) AD(       ) 2
 HV7639  NAD 27      -  38 46 52.86244(N)    076 59 35.56969(W) AD(       ) 2
 HV7639  NGVD 29 (07/19/86)   47.0    (m)          154.     (f) VERT ANG       
 HV7639
 HV7639.Superseded values are not recommended for survey control.
 HV7639
 HV7639.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7639.See file dsdata.pdf to determine how the superseded data were derived.
 HV7639
 HV7639_MARKER: I = METAL ROD
 HV7639_SETTING: 0 = UNSPECIFIED SETTING
 HV7639_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7639
 HV7639  HISTORY     - Date     Condition        Report By
 HV7639  HISTORY     - 1969     MONUMENTED       WSSC
 HV7639
 HV7639                          STATION DESCRIPTION
 HV7639
 HV7639'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7639'THE STATION IS LOCATED ABOUT .25 MILES EAST OF ROUTE 210
 HV7639'(INDIAN HEAD HIGHWAY) AND 2.0 MILES SOUTHWEST OF ROSECROFT
 HV7639'RACEWAY, 200 FEET SOUTH OF LIVINGSTON ROAD.
 HV7639'
 HV7639'TO REACH THE STATION FROM LIVINGSTON ROAD, GO SOUTH ON CAREY
 HV7639'BRANCH DRIVE FOR 200 FEET TO THE STATION ON THE RIGHT.
 HV7639'
 HV7639'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7639'AND IS .2 FEET BELOW THE SURFACE.  IT IS 79.10 FEET SOUTHEAST OF
 HV7639'A FIRE HYDRANT, 67.65 FEET SOUTHWEST OF THE CENTER OF A MANHOLE,
 HV7639'43.28 FEET WEST OF POLE NO. 856130, 3.80 FEET WEST OF A CURB,
 HV7639'45.31 FEET NORTHEAST OF HOUSE NO. 7905, AND 79.87 FEET NORTHEAST
 HV7639'OF THE CORNER OF HOUSE NO. 7905.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7640 ***********************************************************************
 HV7640  DESIGNATION -  17452 WSSC 1970
 HV7640  PID         -  HV7640
 HV7640  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7640  COUNTRY     -  US
 HV7640  USGS QUAD   -  ANACOSTIA (2016)
 HV7640
 HV7640                         *CURRENT SURVEY CONTROL
 HV7640  ______________________________________________________________________
 HV7640* NAD 83(1993) POSITION- 38 46 49.10265(N) 076 59 35.78487(W)   ADJUSTED
 HV7640* NAVD 88 ORTHO HEIGHT -    46.7   (meters)      153.    (feet) VERTCON3
 HV7640  ______________________________________________________________________
 HV7640  GEOID HEIGHT    -        -32.353 (meters)                     GEOID18
 HV7640  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 HV7640  HORZ ORDER      -  SECOND
 HV7640
 HV7640.The horizontal coordinates were established by classical geodetic methods
 HV7640.and adjusted by the National Geodetic Survey in November 1994.
 HV7640
 HV7640.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7640.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7640
 HV7640.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7640.GEOID18 height accuracy estimate available here.
 HV7640
 HV7640.Click photographs - Photos may exist for this station.
 HV7640
 HV7640.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7640
 HV7640. The following values were computed from the NAD 83(1993) position.
 HV7640
 HV7640;                    North         East     Units Scale Factor Converg.
 HV7640;SPC MD       -   123,618.495   400,584.455   MT  0.99995123   +0 00 15.2
 HV7640;SPC MD       -   405,571.68  1,314,250.83   sFT  0.99995123   +0 00 15.2
 HV7640;UTM  18      - 4,294,284.169   326,858.860   MT  0.99996916   -1 14 55.6
 HV7640
 HV7640!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7640!SPC MD       -   0.99999774  x   0.99995123  =   0.99994897
 HV7640!UTM  18      -   0.99999774  x   0.99996916  =   0.99996690
 HV7640
 HV7640:                Primary Azimuth Mark                     Grid Az
 HV7640:SPC MD       -  TUCKER 2 RM 4                            105 46 00.5
 HV7640:UTM  18      -  TUCKER 2 RM 4                            107 01 11.3
 HV7640
 HV7640_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2685894284(NAD 83)
 HV7640
 HV7640|---------------------------------------------------------------------|
 HV7640| PID    Reference Object                     Distance      Geod. Az  |
 HV7640|                                                           dddmmss.s |
 HV7640| HV7639 17451 WSSC 1970                     132.470 METERS 01352     |
 HV7640| HV7589 TUCKER 2 RM 4                       APPROX. 1.7 KM 1054615.7 |
 HV7640|---------------------------------------------------------------------|
 HV7640
 HV7640                          SUPERSEDED SURVEY CONTROL
 HV7640
 HV7640  NAD 83(1991)-  38 46 49.10144(N)    076 59 35.78573(W) AD(       ) 2
 HV7640  NAD 83(1986)-  38 46 49.10108(N)    076 59 35.79846(W) AD(       ) 2
 HV7640  NAD 27      -  38 46 48.69160(N)    076 59 36.88556(W) AD(       ) 2
 HV7640  NGVD 29 (07/19/86)   47.0    (m)          154.     (f) VERT ANG       
 HV7640
 HV7640.Superseded values are not recommended for survey control.
 HV7640
 HV7640.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7640.See file dsdata.pdf to determine how the superseded data were derived.
 HV7640
 HV7640_MARKER: I = METAL ROD
 HV7640_SETTING: 0 = UNSPECIFIED SETTING
 HV7640_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7640
 HV7640  HISTORY     - Date     Condition        Report By
 HV7640  HISTORY     - 1969     MONUMENTED       WSSC
 HV7640
 HV7640                          STATION DESCRIPTION
 HV7640
 HV7640'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7640'THE STATION IS LOCATED ABOUT .25 MILES EAST OF ROUTE 210
 HV7640'(INDIAN HEAD HIGHWAY) AND 2.10 MILES SOUTHWEST OF ROSECROFT
 HV7640'RACEWAY, SOUTH OF LIVINGSTON ROAD.
 HV7640'
 HV7640'TO REACH THE STATION FROM LIVINGSTON ROAD, GO SOUTH ON CAREY
 HV7640'BRANCH DRIVE TO THE INTERSECTION OF CAREY BRANCH PLACE AND THE
 HV7640'STATION IS ON THE LEFT.
 HV7640'
 HV7640'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7640'AND IS .3 FEET BELOW THE SURFACE.  IT IS 46.10 FEET SOUTHWEST
 HV7640'OF HOUSE NO. 7914, 37.72 FEET WEST OF HOUSE NO. 8000, 4.80 FEET
 HV7640'SOUTH OF AN X CUT IN THE MANHOLE IN A CONCRETE DRIVE.  THE
 HV7640'STATION IS BETWEEN THE WALK AND THE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8071 ***********************************************************************
 HV8071  DESIGNATION -  17453 WSSC 1970
 HV8071  PID         -  HV8071
 HV8071  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8071  COUNTRY     -  US
 HV8071  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8071
 HV8071                         *CURRENT SURVEY CONTROL
 HV8071  ______________________________________________________________________
 HV8071* NAD 83(1993) POSITION- 38 57 30.24762(N) 076 59 12.22948(W)   ADJUSTED
 HV8071* NAVD 88 ORTHO HEIGHT -    36.7   (meters)      120.    (feet) VERTCON3
 HV8071  ______________________________________________________________________
 HV8071  GEOID HEIGHT    -        -32.056 (meters)                     GEOID18
 HV8071  LAPLACE CORR    -         -3.54  (seconds)                    DEFLEC18
 HV8071  HORZ ORDER      -  SECOND
 HV8071
 HV8071.The horizontal coordinates were established by classical geodetic methods
 HV8071.and adjusted by the National Geodetic Survey in November 1994.
 HV8071
 HV8071.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8071.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8071
 HV8071.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8071.GEOID18 height accuracy estimate available here.
 HV8071
 HV8071.Click photographs - Photos may exist for this station.
 HV8071
 HV8071.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8071
 HV8071. The following values were computed from the NAD 83(1993) position.
 HV8071
 HV8071;                    North         East     Units Scale Factor Converg.
 HV8071;SPC MD       -   143,388.523   401,150.113   MT  0.99995088   +0 00 30.0
 HV8071;SPC MD       -   470,433.85  1,316,106.66   sFT  0.99995088   +0 00 30.0
 HV8071;UTM  18      - 4,314,037.391   327,857.542   MT  0.99996490   -1 14 58.1
 HV8071
 HV8071!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8071!SPC MD       -   0.99999927  x   0.99995088  =   0.99995015
 HV8071!UTM  18      -   0.99999927  x   0.99996490  =   0.99996417
 HV8071
 HV8071:                Primary Azimuth Mark                     Grid Az
 HV8071:SPC MD       -  VERSAILLES                               130 48 18.8
 HV8071:UTM  18      -  VERSAILLES                               132 03 46.9
 HV8071
 HV8071_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2785714037(NAD 83)
 HV8071
 HV8071|---------------------------------------------------------------------|
 HV8071| PID    Reference Object                     Distance      Geod. Az  |
 HV8071|                                                           dddmmss.s |
 HV8071| HV7750 VERSAILLES                          APPROX. 1.7 KM 1304848.8 |
 HV8071|---------------------------------------------------------------------|
 HV8071
 HV8071                          SUPERSEDED SURVEY CONTROL
 HV8071
 HV8071  NAD 83(1991)-  38 57 30.24722(N)    076 59 12.22950(W) AD(       ) 2
 HV8071  NAD 83(1986)-  38 57 30.24653(N)    076 59 12.24055(W) AD(       ) 2
 HV8071  NAD 27      -  38 57 29.84820(N)    076 59 13.32595(W) AD(       ) 2
 HV8071  NGVD 29 (07/19/86)   36.9    (m)          121.     (f) VERT ANG       
 HV8071
 HV8071.Superseded values are not recommended for survey control.
 HV8071
 HV8071.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8071.See file dsdata.pdf to determine how the superseded data were derived.
 HV8071
 HV8071_MARKER: I = METAL ROD
 HV8071_SETTING: 0 = UNSPECIFIED SETTING
 HV8071_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8071
 HV8071  HISTORY     - Date     Condition        Report By
 HV8071  HISTORY     - 1969     MONUMENTED       WSSC
 HV8071
 HV8071                          STATION DESCRIPTION
 HV8071
 HV8071'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8071'THE STATION IS LOCATED IN CHILLUM AT THE NORTHEAST CORNER OF THE
 HV8071'INTERSECTION OF CHILLUM ROAD (ROUTE 501) AND SARGENT ROAD (ROUTE
 HV8071'211).
 HV8071'
 HV8071'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8071'AND IS .2 FEET BELOW THE SURFACE.  IT IS 53.43 FEET WEST OF C AND
 HV8071'P POLE NO. 33, 85.02 FEET SOUTHWEST OF AN X CUT IN A CATCH BASIN,
 HV8071'AND 8.59 FEET SOUTH OF AN X CUT IN A CONCRETE WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8133 ***********************************************************************
 HV8133  DESIGNATION -  17454 WSSC 1970
 HV8133  PID         -  HV8133
 HV8133  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8133  COUNTRY     -  US
 HV8133  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8133
 HV8133                         *CURRENT SURVEY CONTROL
 HV8133  ______________________________________________________________________
 HV8133* NAD 83(1993) POSITION- 38 57 40.03883(N) 076 59 32.47132(W)   ADJUSTED
 HV8133* NAVD 88 ORTHO HEIGHT -    45.2   (meters)      148.    (feet) VERTCON3
 HV8133  ______________________________________________________________________
 HV8133  GEOID HEIGHT    -        -32.044 (meters)                     GEOID18
 HV8133  LAPLACE CORR    -         -3.32  (seconds)                    DEFLEC18
 HV8133  HORZ ORDER      -  SECOND
 HV8133
 HV8133.The horizontal coordinates were established by classical geodetic methods
 HV8133.and adjusted by the National Geodetic Survey in November 1994.
 HV8133
 HV8133.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8133.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8133
 HV8133.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8133.GEOID18 height accuracy estimate available here.
 HV8133
 HV8133.Click photographs - Photos may exist for this station.
 HV8133
 HV8133.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8133
 HV8133. The following values were computed from the NAD 83(1993) position.
 HV8133
 HV8133;                    North         East     Units Scale Factor Converg.
 HV8133;SPC MD       -   143,690.388   400,662.749   MT  0.99995095   +0 00 17.3
 HV8133;SPC MD       -   471,424.21  1,314,507.70   sFT  0.99995095   +0 00 17.3
 HV8133;UTM  18      - 4,314,349.886   327,376.916   MT  0.99996694   -1 15 11.1
 HV8133
 HV8133!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8133!SPC MD       -   0.99999794  x   0.99995095  =   0.99994889
 HV8133!UTM  18      -   0.99999794  x   0.99996694  =   0.99996488
 HV8133
 HV8133_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2737614349(NAD 83)
 HV8133
 HV8133                          SUPERSEDED SURVEY CONTROL
 HV8133
 HV8133  NAD 83(1991)-  38 57 40.03842(N)    076 59 32.47135(W) AD(       ) 2
 HV8133  NAD 83(1986)-  38 57 40.03777(N)    076 59 32.48238(W) AD(       ) 2
 HV8133  NAD 27      -  38 57 39.63957(N)    076 59 33.56715(W) AD(       ) 2
 HV8133  NGVD 29 (07/19/86)   45.4    (m)          149.     (f) VERT ANG       
 HV8133
 HV8133.Superseded values are not recommended for survey control.
 HV8133
 HV8133.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8133.See file dsdata.pdf to determine how the superseded data were derived.
 HV8133
 HV8133_MARKER: I = METAL ROD
 HV8133_SETTING: 0 = UNSPECIFIED SETTING
 HV8133_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8133
 HV8133  HISTORY     - Date     Condition        Report By
 HV8133  HISTORY     - 1969     MONUMENTED       WSSC
 HV8133
 HV8133                          STATION DESCRIPTION
 HV8133
 HV8133'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8133'THE STATION IS LOCATED IN CHILLUM ON THE SOUTHWEST SIDE OF CHILLUM
 HV8133'ROAD (ROUTE 501), 600 FEET SOUTHEAST OF RIGGS ROAD.
 HV8133'
 HV8133'TO REACH THE STATION FROM RIGGS ROAD (ROUTE 212), GO SOUTHEAST ON
 HV8133'CHILLUM ROAD FOR 600 FEET TO THE STATION ON THE RIGHT.
 HV8133'
 HV8133'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 HV8133'IS .4 FEET BELOW THE SURFACE.  IT IS AT THE SOUTHWEST ENTRANCE TO
 HV8133'THE PARKER HOUSE APARTMENTS, 49.34 FEET SOUTHWEST OF PEPCO POLE
 HV8133'NO. 814207, AND 40.05 FEET NORTHWEST OF PEPCO POLE NO. 814208.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8067 ***********************************************************************
 HV8067  DESIGNATION -  17455 WSSC 1970
 HV8067  PID         -  HV8067
 HV8067  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8067  COUNTRY     -  US
 HV8067  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8067
 HV8067                         *CURRENT SURVEY CONTROL
 HV8067  ______________________________________________________________________
 HV8067* NAD 83(1993) POSITION- 38 57 38.68221(N) 076 57 23.28842(W)   ADJUSTED
 HV8067* NAVD 88 ORTHO HEIGHT -    44.4   (meters)      146.    (feet) VERTCON3
 HV8067  ______________________________________________________________________
 HV8067  GEOID HEIGHT    -        -32.113 (meters)                     GEOID18
 HV8067  LAPLACE CORR    -         -4.19  (seconds)                    DEFLEC18
 HV8067  HORZ ORDER      -  SECOND
 HV8067
 HV8067.The horizontal coordinates were established by classical geodetic methods
 HV8067.and adjusted by the National Geodetic Survey in November 1994.
 HV8067
 HV8067.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8067.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8067
 HV8067.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8067.GEOID18 height accuracy estimate available here.
 HV8067
 HV8067.Click photographs - Photos may exist for this station.
 HV8067
 HV8067.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8067
 HV8067. The following values were computed from the NAD 83(1993) position.
 HV8067
 HV8067;                    North         East     Units Scale Factor Converg.
 HV8067;SPC MD       -   143,649.427   403,772.831   MT  0.99995094   +0 01 38.4
 HV8067;SPC MD       -   471,289.83  1,324,711.36   sFT  0.99995094   +0 01 38.4
 HV8067;UTM  18      - 4,314,240.662   330,485.378   MT  0.99995384   -1 13 49.8
 HV8067
 HV8067!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8067!SPC MD       -   0.99999808  x   0.99995094  =   0.99994902
 HV8067!UTM  18      -   0.99999808  x   0.99995384  =   0.99995192
 HV8067
 HV8067:                Primary Azimuth Mark                     Grid Az
 HV8067:SPC MD       -  VERSAILLES                               224 33 56.1
 HV8067:UTM  18      -  VERSAILLES                               225 49 24.3
 HV8067
 HV8067_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3048514240(NAD 83)
 HV8067
 HV8067|---------------------------------------------------------------------|
 HV8067| PID    Reference Object                     Distance      Geod. Az  |
 HV8067|                                                           dddmmss.s |
 HV8067| HV7750 VERSAILLES                          APPROX. 1.9 KM 2243534.5 |
 HV8067| HV8069 17456 WSSC 1970                     172.385 METERS 22523     |
 HV8067|---------------------------------------------------------------------|
 HV8067
 HV8067                          SUPERSEDED SURVEY CONTROL
 HV8067
 HV8067  NAD 83(1991)-  38 57 38.68186(N)    076 57 23.28845(W) AD(       ) 2
 HV8067  NAD 83(1986)-  38 57 38.68101(N)    076 57 23.29948(W) AD(       ) 2
 HV8067  NAD 27      -  38 57 38.28290(N)    076 57 24.38833(W) AD(       ) 2
 HV8067  NGVD 29 (07/19/86)   44.6    (m)          146.     (f) VERT ANG       
 HV8067
 HV8067.Superseded values are not recommended for survey control.
 HV8067
 HV8067.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8067.See file dsdata.pdf to determine how the superseded data were derived.
 HV8067
 HV8067_MARKER: I = METAL ROD
 HV8067_SETTING: 0 = UNSPECIFIED SETTING
 HV8067_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8067
 HV8067  HISTORY     - Date     Condition        Report By
 HV8067  HISTORY     - 1969     MONUMENTED       WSSC
 HV8067
 HV8067                          STATION DESCRIPTION
 HV8067
 HV8067'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8067'THE STATION IS LOCATED AT QUEENS CHAPEL MANOR ON THE EAST SIDE OF
 HV8067'MANORWOOD DRIVE, 200 FEET NORTHWEST OF QUEENS CHAPEL ROAD (ROUTE
 HV8067'500).
 HV8067'
 HV8067'TO REACH THE STATION FROM QUEENS CHAPEL ROAD, GO NORTHWEST ON
 HV8067'MANORWOOD DRIVE FOR 200 FEET TO THE STATION ON THE RIGHT.
 HV8067'
 HV8067'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 HV8067'IS .8 FEET BELOW THE SURFACE.  IT IS 38.25 FEET WEST OF THE CORNER
 HV8067'OF HOUSE NO. 3600, 4.48 FEET WEST OF PEPCO POLE NO. 853716, 3.00
 HV8067'FEET NORTHEAST OF THE CURB, 15.41 FEET SOUTH OF THE CORNER OF A
 HV8067'BRICK WALL.  THE STATION IS AT THE INTERSECTION OF 36TH AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8069 ***********************************************************************
 HV8069  DESIGNATION -  17456 WSSC 1970
 HV8069  PID         -  HV8069
 HV8069  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8069  COUNTRY     -  US
 HV8069  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8069
 HV8069                         *CURRENT SURVEY CONTROL
 HV8069  ______________________________________________________________________
 HV8069* NAD 83(1993) POSITION- 38 57 34.75639(N) 076 57 28.38559(W)   ADJUSTED
 HV8069* NAVD 88 ORTHO HEIGHT -    33.1   (meters)      109.    (feet) VERTCON3
 HV8069  ______________________________________________________________________
 HV8069  GEOID HEIGHT    -        -32.112 (meters)                     GEOID18
 HV8069  LAPLACE CORR    -         -4.17  (seconds)                    DEFLEC18
 HV8069  HORZ ORDER      -  SECOND
 HV8069
 HV8069.The horizontal coordinates were established by classical geodetic methods
 HV8069.and adjusted by the National Geodetic Survey in November 1994.
 HV8069
 HV8069.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8069.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8069
 HV8069.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8069.GEOID18 height accuracy estimate available here.
 HV8069
 HV8069.Click photographs - Photos may exist for this station.
 HV8069
 HV8069.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8069
 HV8069. The following values were computed from the NAD 83(1993) position.
 HV8069
 HV8069;                    North         East     Units Scale Factor Converg.
 HV8069;SPC MD       -   143,528.313   403,650.173   MT  0.99995092   +0 01 35.2
 HV8069;SPC MD       -   470,892.47  1,324,308.94   sFT  0.99995092   +0 01 35.2
 HV8069;UTM  18      - 4,314,122.269   330,360.090   MT  0.99995437   -1 13 52.9
 HV8069
 HV8069!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8069!SPC MD       -   0.99999985  x   0.99995092  =   0.99995077
 HV8069!UTM  18      -   0.99999985  x   0.99995437  =   0.99995422
 HV8069
 HV8069_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3036014122(NAD 83)
 HV8069
 HV8069                          SUPERSEDED SURVEY CONTROL
 HV8069
 HV8069  NAD 83(1991)-  38 57 34.75604(N)    076 57 28.38562(W) AD(       ) 2
 HV8069  NAD 83(1986)-  38 57 34.75520(N)    076 57 28.39666(W) AD(       ) 2
 HV8069  NAD 27      -  38 57 34.35702(N)    076 57 29.48534(W) AD(       ) 2
 HV8069  NGVD 29 (07/19/86)   33.3    (m)          109.     (f) VERT ANG       
 HV8069
 HV8069.Superseded values are not recommended for survey control.
 HV8069
 HV8069.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8069.See file dsdata.pdf to determine how the superseded data were derived.
 HV8069
 HV8069_MARKER: I = METAL ROD
 HV8069_SETTING: 0 = UNSPECIFIED SETTING
 HV8069_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8069
 HV8069  HISTORY     - Date     Condition        Report By
 HV8069  HISTORY     - 1969     MONUMENTED       WSSC
 HV8069
 HV8069                          STATION DESCRIPTION
 HV8069
 HV8069'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV8069'THE STATION IS LOCATED IN WEST HYATTSVILLE, .6 MILES NORTHEAST OF
 HV8069'AGER ROAD AND .55 MILES SOUTHWEST OF EAST-WEST HIGHWAY.
 HV8069'
 HV8069'TO REACH THE STATION FROM THE INTERSECTION OF QUEENS CHAPEL ROAD
 HV8069'AND THE MARYLAND-D.C. LINE, GO NORTHEAST ON QUEENS CHAPEL ROAD FOR
 HV8069'1.2 MILES TO THE INTERSECTION OF QUEENS CHAPEL ROAD AND HAMILTON
 HV8069'STREET.  CONTINUE NORTHEAST ON QUEENS CHAPEL ROAD FOR .45 MILES
 HV8069'TO 36TH AVENUE.  TURN LEFT ON 36TH AVENUE TO THE INTERSECTION OF
 HV8069'MADISON PLACE AND THE STATION IS ON THE LEFT.
 HV8069'
 HV8069'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV8069'AND IS .5 FEET BELOW THE SURFACE.  IT IS ON THE SOUTH SIDE OF 36TH
 HV8069'AVENUE, 2.15 FEET BEHIND THE CONCRETE CURB, 6.64 FEET EAST OF THE
 HV8069'CENTERLINE OF THE A SEWER MANHOLE, 14.61 FEET WEST OF PEPCO POLE
 HV8069'NO. 853708, 46.16 FEET NORTHWEST OF THE NORTHWEST CORNER OF HOUSE
 HV8069'NO. 5801 AND 36.72 FEET NORTH OF THE NORTHEAST CORNER OF HOUSE
 HV8069'NO. 3545.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7642 ***********************************************************************
 HV7642  DESIGNATION -  17457 WSSC 1970
 HV7642  PID         -  HV7642
 HV7642  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7642  COUNTRY     -  US
 HV7642  USGS QUAD   -  ANACOSTIA (2016)
 HV7642
 HV7642                         *CURRENT SURVEY CONTROL
 HV7642  ______________________________________________________________________
 HV7642* NAD 83(1993) POSITION- 38 48 54.57404(N) 076 59 55.59608(W)   ADJUSTED
 HV7642* NAVD 88 ORTHO HEIGHT -    22.0   (meters)       72.    (feet) VERTCON3
 HV7642  ______________________________________________________________________
 HV7642  GEOID HEIGHT    -        -32.274 (meters)                     GEOID18
 HV7642  LAPLACE CORR    -         -3.03  (seconds)                    DEFLEC18
 HV7642  HORZ ORDER      -  SECOND
 HV7642
 HV7642.The horizontal coordinates were established by classical geodetic methods
 HV7642.and adjusted by the National Geodetic Survey in November 1994.
 HV7642
 HV7642.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7642.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7642
 HV7642.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7642.GEOID18 height accuracy estimate available here.
 HV7642
 HV7642.Click photographs - Photos may exist for this station.
 HV7642
 HV7642.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7642
 HV7642. The following values were computed from the NAD 83(1993) position.
 HV7642
 HV7642;                    North         East     Units Scale Factor Converg.
 HV7642;SPC MD       -   127,487.390   400,106.241   MT  0.99995041   +0 00 02.8
 HV7642;SPC MD       -   418,264.88  1,312,681.89   sFT  0.99995041   +0 00 02.8
 HV7642;UTM  18      - 4,298,162.674   326,465.385   MT  0.99997084   -1 15 11.4
 HV7642
 HV7642!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7642!SPC MD       -   1.00000161  x   0.99995041  =   0.99995202
 HV7642!UTM  18      -   1.00000161  x   0.99997084  =   0.99997245
 HV7642
 HV7642:                Primary Azimuth Mark                     Grid Az
 HV7642:SPC MD       -  WINGATE                                  310 26 36.1
 HV7642:UTM  18      -  WINGATE                                  311 41 50.3
 HV7642
 HV7642_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2646598162(NAD 83)
 HV7642
 HV7642|---------------------------------------------------------------------|
 HV7642| PID    Reference Object                     Distance      Geod. Az  |
 HV7642|                                                           dddmmss.s |
 HV7642| HV7609 FOREST HEIGHTS WSSC TANK            APPROX. 0.6 KM 1595846.0 |
 HV7642| HV7641 17458 WSSC 1970                     302.112 METERS 17824     |
 HV7642| HV4760 WINGATE                             APPROX. 1.3 KM 3102638.9 |
 HV7642|---------------------------------------------------------------------|
 HV7642
 HV7642                          SUPERSEDED SURVEY CONTROL
 HV7642
 HV7642  NAD 83(1991)-  38 48 54.57273(N)    076 59 55.59728(W) AD(       ) 2
 HV7642  NAD 83(1986)-  38 48 54.57237(N)    076 59 55.60915(W) AD(       ) 2
 HV7642  NAD 27      -  38 48 54.16903(N)    076 59 56.70143(W) AD(       ) 2
 HV7642  NGVD 29 (07/19/86)   22.3    (m)           73.     (f) VERT ANG       
 HV7642
 HV7642.Superseded values are not recommended for survey control.
 HV7642
 HV7642.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7642.See file dsdata.pdf to determine how the superseded data were derived.
 HV7642
 HV7642_MARKER: I = METAL ROD
 HV7642_SETTING: 0 = UNSPECIFIED SETTING
 HV7642_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7642
 HV7642  HISTORY     - Date     Condition        Report By
 HV7642  HISTORY     - 1969     MONUMENTED       WSSC
 HV7642
 HV7642                          STATION DESCRIPTION
 HV7642
 HV7642'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7642'THE STATION IS LOCATED AT FOREST HEIGHTS ON THE WEST SIDE OF ROUTE
 HV7642'210 (INDIAN HEAD HIGHWAY), 100 FEET SOUTH OF LIVINGSTON ROAD.
 HV7642'
 HV7642'TO REACH THE STATION FROM LIVINGSTON ROAD, GO SOUTH ON ROUTE 210
 HV7642'FOR 100 FEET TO THE STATION ON THE RIGHT.
 HV7642'
 HV7642'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7642'AND IS .2 FEET BELOW THE SURFACE.  IT IS 48.52 FEET SOUTH OF THE
 HV7642'SOUTHEAST CORNER OF A CONCRETE SIGN BASE, 54.89 FEET EAST OF PEPCO
 HV7642'POLE NO. 833715, 17.5 FEET WEST OF THE SOUTHBOUND LANE OF ROUTE
 HV7642'210, 14.32 FEET SOUTHEAST OF A PK NAIL IN THE CURB, AND 27.32
 HV7642'FEET NORTHEAST OF A PK NAIL IN THE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7641 ***********************************************************************
 HV7641  DESIGNATION -  17458 WSSC 1970
 HV7641  PID         -  HV7641
 HV7641  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7641  COUNTRY     -  US
 HV7641  USGS QUAD   -  ANACOSTIA (2016)
 HV7641
 HV7641                         *CURRENT SURVEY CONTROL
 HV7641  ______________________________________________________________________
 HV7641* NAD 83(1993) POSITION- 38 48 44.78068(N) 076 59 55.24723(W)   ADJUSTED
 HV7641* NAVD 88 ORTHO HEIGHT -    34.2   (meters)      112.    (feet) VERTCON3
 HV7641  ______________________________________________________________________
 HV7641  GEOID HEIGHT    -        -32.279 (meters)                     GEOID18
 HV7641  LAPLACE CORR    -         -3.00  (seconds)                    DEFLEC18
 HV7641  HORZ ORDER      -  SECOND
 HV7641
 HV7641.The horizontal coordinates were established by classical geodetic methods
 HV7641.and adjusted by the National Geodetic Survey in November 1994.
 HV7641
 HV7641.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7641.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7641
 HV7641.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7641.GEOID18 height accuracy estimate available here.
 HV7641
 HV7641.Click photographs - Photos may exist for this station.
 HV7641
 HV7641.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7641
 HV7641. The following values were computed from the NAD 83(1993) position.
 HV7641
 HV7641;                    North         East     Units Scale Factor Converg.
 HV7641;SPC MD       -   127,185.410   400,114.661   MT  0.99995046   +0 00 03.0
 HV7641;SPC MD       -   417,274.13  1,312,709.52   sFT  0.99995046   +0 00 03.0
 HV7641;UTM  18      - 4,297,860.577   326,467.195   MT  0.99997083   -1 15 10.9
 HV7641
 HV7641!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7641!SPC MD       -   0.99999969  x   0.99995046  =   0.99995015
 HV7641!UTM  18      -   0.99999969  x   0.99997083  =   0.99997052
 HV7641
 HV7641_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2646797860(NAD 83)
 HV7641
 HV7641                          SUPERSEDED SURVEY CONTROL
 HV7641
 HV7641  NAD 83(1991)-  38 48 44.77937(N)    076 59 55.24843(W) AD(       ) 2
 HV7641  NAD 83(1986)-  38 48 44.77901(N)    076 59 55.26036(W) AD(       ) 2
 HV7641  NAD 27      -  38 48 44.37552(N)    076 59 56.35296(W) AD(       ) 2
 HV7641  NGVD 29 (07/19/86)   34.5    (m)          113.     (f) VERT ANG       
 HV7641
 HV7641.Superseded values are not recommended for survey control.
 HV7641
 HV7641.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7641.See file dsdata.pdf to determine how the superseded data were derived.
 HV7641
 HV7641_MARKER: B = BOLT
 HV7641_SETTING: 0 = UNSPECIFIED SETTING
 HV7641_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7641
 HV7641  HISTORY     - Date     Condition        Report By
 HV7641  HISTORY     - 1969     MONUMENTED       WSSC
 HV7641
 HV7641                          STATION DESCRIPTION
 HV7641
 HV7641'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7641'THE STATION IS LOCATED ON THE EAST SIDE OF ROUTE 210 (INDIAN HEAD
 HV7641'HIGHWAY), .65 MILES NORTH OF ROUTE 495.
 HV7641'
 HV7641'TO REACH THE STATION FROM THE INTERSECTION OF 495 AND ROUTE 210, GO
 HV7641'NORTH ON ROUTE 210 FOR .65 MILES TO THE STATION ON THE RIGHT IN THE
 HV7641'CONCRETE SIGN BASE OF THE CAPITAL BELTWAY SIGN, 2 MILES SOUTH OF
 HV7641'LIVINGSTON ROAD.
 HV7641'
 HV7641'THE STATION MARK IS A BRASS BOLT AND COPPER WASHER STAMPED
 HV7641'W.S.S.C. BM 3511.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7638 ***********************************************************************
 HV7638  DESIGNATION -  17459 WSSC 1970
 HV7638  PID         -  HV7638
 HV7638  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7638  COUNTRY     -  US
 HV7638  USGS QUAD   -  ANACOSTIA (2016)
 HV7638
 HV7638                         *CURRENT SURVEY CONTROL
 HV7638  ______________________________________________________________________
 HV7638* NAD 83(1993) POSITION- 38 49 52.94434(N) 076 59 17.18408(W)   ADJUSTED
 HV7638* NAVD 88 ORTHO HEIGHT -    56.9   (meters)      187.    (feet) VERTCON3
 HV7638  ______________________________________________________________________
 HV7638  GEOID HEIGHT    -        -32.259 (meters)                     GEOID18
 HV7638  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 HV7638  HORZ ORDER      -  SECOND
 HV7638
 HV7638.The horizontal coordinates were established by classical geodetic methods
 HV7638.and adjusted by the National Geodetic Survey in November 1994.
 HV7638
 HV7638.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7638.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7638
 HV7638.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7638.GEOID18 height accuracy estimate available here.
 HV7638
 HV7638.Click photographs - Photos may exist for this station.
 HV7638
 HV7638.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7638
 HV7638. The following values were computed from the NAD 83(1993) position.
 HV7638
 HV7638;                    North         East     Units Scale Factor Converg.
 HV7638;SPC MD       -   129,287.314   401,032.664   MT  0.99995015   +0 00 26.9
 HV7638;SPC MD       -   424,170.13  1,315,721.33   sFT  0.99995015   +0 00 26.9
 HV7638;UTM  18      - 4,299,941.923   327,431.000   MT  0.99996672   -1 14 48.9
 HV7638
 HV7638!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7638!SPC MD       -   0.99999613  x   0.99995015  =   0.99994628
 HV7638!UTM  18      -   0.99999613  x   0.99996672  =   0.99996285
 HV7638
 HV7638:                Primary Azimuth Mark                     Grid Az
 HV7638:SPC MD       -  WINGATE                                  243 44 08.4
 HV7638:UTM  18      -  WINGATE                                  244 59 24.2
 HV7638
 HV7638_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2743199941(NAD 83)
 HV7638
 HV7638|---------------------------------------------------------------------|
 HV7638| PID    Reference Object                     Distance      Geod. Az  |
 HV7638|                                                           dddmmss.s |
 HV7638| HV7609 FOREST HEIGHTS WSSC TANK            APPROX. 2.4 KM 1973845.1 |
 HV7638| HV4760 WINGATE                             APPROX. 2.1 KM 2434435.3 |
 HV7638|---------------------------------------------------------------------|
 HV7638
 HV7638                          SUPERSEDED SURVEY CONTROL
 HV7638
 HV7638  NAD 83(1991)-  38 49 52.94306(N)    076 59 17.18533(W) AD(       ) 2
 HV7638  NAD 83(1986)-  38 49 52.94262(N)    076 59 17.19701(W) AD(       ) 2
 HV7638  NAD 27      -  38 49 52.53640(N)    076 59 18.28321(W) AD(       ) 2
 HV7638  NGVD 29 (07/19/86)   57.2    (m)          188.     (f) VERT ANG       
 HV7638
 HV7638.Superseded values are not recommended for survey control.
 HV7638
 HV7638.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7638.See file dsdata.pdf to determine how the superseded data were derived.
 HV7638
 HV7638_MARKER: I = METAL ROD
 HV7638_SETTING: 0 = UNSPECIFIED SETTING
 HV7638_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7638
 HV7638  HISTORY     - Date     Condition        Report By
 HV7638  HISTORY     - 1969     MONUMENTED       WSSC
 HV7638
 HV7638                          STATION DESCRIPTION
 HV7638
 HV7638'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7638'THE STATION IS LOCATED ON THE SOUTHEAST SIDE OF SOUTHERN AVENUE AT
 HV7638'THE PRINCE GEORGES AND DISTRICT OF COLUMBIA BOUNDARY LINE, 400 FEET
 HV7638'SOUTHWEST OF WHEELER ROAD.
 HV7638'
 HV7638'TO REACH THE STATION FROM WHEELER ROAD, GO SOUTHWEST ON SOUTHERN
 HV7638'AVENUE FOR 400 FEET TO THE STATION ON THE LEFT.
 HV7638'
 HV7638'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 HV7638'IS SET FLUSH WITH THE SURFACE.  IT IS 29.46 FEET SOUTH OF PEPCO
 HV7638'POLE NO. 538493, 44.60 FEET WEST OF A STONE PROPERTY MARKER, 22.51
 HV7638'FEET WEST OF C AND P POLE NO. P-6705, AND 0.55 FEET EAST OF THE
 HV7638'BACK EDGE OF A WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1197 ***********************************************************************
 HV1197  DESIGNATION -  1746 WSSC
 HV1197  PID         -  HV1197
 HV1197  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1197  COUNTRY     -  US
 HV1197  USGS QUAD   -  LANHAM (2016)
 HV1197
 HV1197                         *CURRENT SURVEY CONTROL
 HV1197  ______________________________________________________________________
 HV1197* NAD 83(1986) POSITION- 38 54 51.     (N) 076 50 27.     (W)   SCALED
 HV1197* NAVD 88 ORTHO HEIGHT -    47.41  (+/-2cm)      155.5   (feet) VERTCON3
 HV1197  ______________________________________________________________________
 HV1197  GEOID HEIGHT    -        -32.477 (meters)                     GEOID18
 HV1197  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1197
 HV1197.The horizontal coordinates were scaled from a map and have
 HV1197.an estimated accuracy of +/- 6 seconds.
 HV1197
 HV1197.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1197.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1197
 HV1197.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1197.GEOID18 height accuracy estimate available here.
 HV1197
 HV1197.The vertical order pertains to the NGVD 29 superseded value.
 HV1197
 HV1197.Click photographs - Photos may exist for this station.
 HV1197
 HV1197;                    North         East    Units  Estimated Accuracy
 HV1197;SPC MD       -   138,490.      413,800.      MT  (+/- 180 meters Scaled)
 HV1197
 HV1197_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ404088(NAD 83)
 HV1197
 HV1197                          SUPERSEDED SURVEY CONTROL
 HV1197
 HV1197  NGVD 29 (11/26/84)   47.650  (m)          156.33   (f) ADJUSTED    2 0
 HV1197
 HV1197.Superseded values are not recommended for survey control.
 HV1197
 HV1197.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1197.See file dsdata.pdf to determine how the superseded data were derived.
 HV1197
 HV1197_MARKER: DD = SURVEY DISK
 HV1197_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1197_SP_SET: BRIDGE ABUTMENT
 HV1197_STAMPING: 1746
 HV1197_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1197
 HV1197  HISTORY     - Date     Condition        Report By
 HV1197  HISTORY     - UNK      MONUMENTED       WSSC
 HV1197  HISTORY     - 1944     GOOD             WSSC
 HV1197
 HV1197                          STATION DESCRIPTION
 HV1197
 HV1197'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1197'0.9 MI E FROM BRIGHTSEAT.
 HV1197'ON THE OLD LANDOVER-MARLBORO PIKE, 1.2 MILES WEST OF LARGO, AT
 HV1197'THE NORTHEAST CORNER OF A BRIDGE, AND IN THE TOP OF THE
 HV1197'NORTHEAST WING WALL OF THE NORTH ABUTMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7635 ***********************************************************************
 HV7635  DESIGNATION -  17460 WSSC 1970
 HV7635  PID         -  HV7635
 HV7635  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7635  COUNTRY     -  US
 HV7635  USGS QUAD   -  ANACOSTIA (2016)
 HV7635
 HV7635                         *CURRENT SURVEY CONTROL
 HV7635  ______________________________________________________________________
 HV7635* NAD 83(1993) POSITION- 38 49 04.59433(N) 076 58 38.63169(W)   ADJUSTED
 HV7635* NAVD 88 ORTHO HEIGHT -    67.5   (meters)      221.    (feet) VERTCON3
 HV7635  ______________________________________________________________________
 HV7635  GEOID HEIGHT    -        -32.303 (meters)                     GEOID18
 HV7635  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 HV7635  HORZ ORDER      -  SECOND
 HV7635
 HV7635.The horizontal coordinates were established by classical geodetic methods
 HV7635.and adjusted by the National Geodetic Survey in November 1994.
 HV7635
 HV7635.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7635.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7635
 HV7635.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7635.GEOID18 height accuracy estimate available here.
 HV7635
 HV7635.Click photographs - Photos may exist for this station.
 HV7635
 HV7635.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7635
 HV7635. The following values were computed from the NAD 83(1993) position.
 HV7635
 HV7635;                    North         East     Units Scale Factor Converg.
 HV7635;SPC MD       -   127,796.609   401,962.867   MT  0.99995036   +0 00 51.1
 HV7635;SPC MD       -   419,279.37  1,318,773.17   sFT  0.99995036   +0 00 51.1
 HV7635;UTM  18      - 4,298,431.193   328,328.365   MT  0.99996292   -1 14 23.4
 HV7635
 HV7635!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7635!SPC MD       -   0.99999447  x   0.99995036  =   0.99994483
 HV7635!UTM  18      -   0.99999447  x   0.99996292  =   0.99995739
 HV7635
 HV7635:                Primary Azimuth Mark                     Grid Az
 HV7635:SPC MD       -  WINGATE                                  280 44 11.3
 HV7635:UTM  18      -  WINGATE                                  281 59 25.8
 HV7635
 HV7635_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2832898431(NAD 83)
 HV7635
 HV7635|---------------------------------------------------------------------|
 HV7635| PID    Reference Object                     Distance      Geod. Az  |
 HV7635|                                                           dddmmss.s |
 HV7635| HV4760 WINGATE                             APPROX. 2.9 KM 2804502.4 |
 HV7635| HV7636 17461 WSSC 1970                     129.882 METERS 35158     |
 HV7635|---------------------------------------------------------------------|
 HV7635
 HV7635                          SUPERSEDED SURVEY CONTROL
 HV7635
 HV7635  NAD 83(1991)-  38 49 04.59306(N)    076 58 38.63291(W) AD(       ) 2
 HV7635  NAD 83(1986)-  38 49 04.59254(N)    076 58 38.64476(W) AD(       ) 2
 HV7635  NAD 27      -  38 49 04.18542(N)    076 58 39.73249(W) AD(       ) 2
 HV7635  NGVD 29 (07/19/86)   67.8    (m)          222.     (f) VERT ANG       
 HV7635
 HV7635.Superseded values are not recommended for survey control.
 HV7635
 HV7635.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7635.See file dsdata.pdf to determine how the superseded data were derived.
 HV7635
 HV7635_MARKER: B = BOLT
 HV7635_SETTING: 0 = UNSPECIFIED SETTING
 HV7635_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7635
 HV7635  HISTORY     - Date     Condition        Report By
 HV7635  HISTORY     - 1969     MONUMENTED       WSSC
 HV7635
 HV7635                          STATION DESCRIPTION
 HV7635
 HV7635'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7635'THE STATION IS LOCATED IN BARNABY MANOR OAKS, ABOUT .05 MILES NORTH
 HV7635'OF OWENS ROAD.
 HV7635'
 HV7635'TO REACH THE STATION FROM THE INTERSECTION OF OWENS ROAD AND
 HV7635'MARTIN DRIVE, GO NORTH ON MARTIN DRIVE FOR .05 MILES TO THE STATION
 HV7635'ON THE RIGHT.
 HV7635'
 HV7635'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CURB AT THE
 HV7635'INTERSECTION OF KIRKLIN DRIVE.  IT IS 45.83 FEET SOUTH OF C AND P
 HV7635'POLE NO. P-4930.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7636 ***********************************************************************
 HV7636  DESIGNATION -  17461 WSSC 1970
 HV7636  PID         -  HV7636
 HV7636  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7636  COUNTRY     -  US
 HV7636  USGS QUAD   -  ANACOSTIA (2016)
 HV7636
 HV7636                         *CURRENT SURVEY CONTROL
 HV7636  ______________________________________________________________________
 HV7636* NAD 83(1993) POSITION- 38 49 08.76490(N) 076 58 39.38431(W)   ADJUSTED
 HV7636* NAVD 88 ORTHO HEIGHT -    53.6   (meters)      176.    (feet) VERTCON3
 HV7636  ______________________________________________________________________
 HV7636  GEOID HEIGHT    -        -32.300 (meters)                     GEOID18
 HV7636  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 HV7636  HORZ ORDER      -  SECOND
 HV7636
 HV7636.The horizontal coordinates were established by classical geodetic methods
 HV7636.and adjusted by the National Geodetic Survey in November 1994.
 HV7636
 HV7636.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7636.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7636
 HV7636.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7636.GEOID18 height accuracy estimate available here.
 HV7636
 HV7636.Click photographs - Photos may exist for this station.
 HV7636
 HV7636.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7636
 HV7636. The following values were computed from the NAD 83(1993) position.
 HV7636
 HV7636;                    North         East     Units Scale Factor Converg.
 HV7636;SPC MD       -   127,925.205   401,944.680   MT  0.99995034   +0 00 50.6
 HV7636;SPC MD       -   419,701.28  1,318,713.50   sFT  0.99995034   +0 00 50.6
 HV7636;UTM  18      - 4,298,560.157   328,312.996   MT  0.99996298   -1 14 24.0
 HV7636
 HV7636!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7636!SPC MD       -   0.99999665  x   0.99995034  =   0.99994699
 HV7636!UTM  18      -   0.99999665  x   0.99996298  =   0.99995963
 HV7636
 HV7636_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2831298560(NAD 83)
 HV7636
 HV7636                          SUPERSEDED SURVEY CONTROL
 HV7636
 HV7636  NAD 83(1991)-  38 49 08.76363(N)    076 58 39.38553(W) AD(       ) 2
 HV7636  NAD 83(1986)-  38 49 08.76311(N)    076 58 39.39737(W) AD(       ) 2
 HV7636  NAD 27      -  38 49 08.35605(N)    076 58 40.48502(W) AD(       ) 2
 HV7636  NGVD 29 (07/19/86)   53.9    (m)          177.     (f) VERT ANG       
 HV7636
 HV7636.Superseded values are not recommended for survey control.
 HV7636
 HV7636.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7636.See file dsdata.pdf to determine how the superseded data were derived.
 HV7636
 HV7636_MARKER: B = BOLT
 HV7636_SETTING: 0 = UNSPECIFIED SETTING
 HV7636_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7636
 HV7636  HISTORY     - Date     Condition        Report By
 HV7636  HISTORY     - 1969     MONUMENTED       WSSC
 HV7636
 HV7636                          STATION DESCRIPTION
 HV7636
 HV7636'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7636'THE STATION IS LOCATED IN BARNABY MANOR OAKS, ABOUT .10 MILES
 HV7636'NORTH OF OWENS ROAD.
 HV7636'
 HV7636'TO REACH THE STATION FROM THE INTERSECTION OF OWENS ROAD AND
 HV7636'MARTIN DRIVE, GO NORTH ON MARTIN DRIVE FOR .10 MILES TO THE STATION
 HV7636'ON THE RIGHT.
 HV7636'
 HV7636'THE STATION MARK IS A BRASS BOLT IN THE CONCRETE CURB OPPOSITE
 HV7636'HOUSE NO. 5410.  IT IS 19.23 FEET SOUTH OF C AND P POLE NO. P-4933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7251 ***********************************************************************
 HV7251  DESIGNATION -  17462 WSSC 1970
 HV7251  PID         -  HV7251
 HV7251  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7251  COUNTRY     -  US
 HV7251  USGS QUAD   -  BOWIE (2016)
 HV7251
 HV7251                         *CURRENT SURVEY CONTROL
 HV7251  ______________________________________________________________________
 HV7251* NAD 83(1991) POSITION- 38 59 47.40678(N) 076 44 12.64755(W)   ADJUSTED
 HV7251* NAVD 88 ORTHO HEIGHT -    43.0   (meters)      141.    (feet) VERTCON3
 HV7251  ______________________________________________________________________
 HV7251  GEOID HEIGHT    -        -32.667 (meters)                     GEOID18
 HV7251  LAPLACE CORR    -         -5.61  (seconds)                    DEFLEC18
 HV7251  HORZ ORDER      -  SECOND
 HV7251
 HV7251.The horizontal coordinates were established by classical geodetic methods
 HV7251.and adjusted by the National Geodetic Survey in January 1992.
 HV7251
 HV7251.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7251.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7251
 HV7251.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7251.GEOID18 height accuracy estimate available here.
 HV7251
 HV7251.Click photographs - Photos may exist for this station.
 HV7251
 HV7251.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7251
 HV7251. The following values were computed from the NAD 83(1991) position.
 HV7251
 HV7251;                    North         East     Units Scale Factor Converg.
 HV7251;SPC MD       -   147,650.738   422,796.036   MT  0.99995206   +0 09 54.6
 HV7251;SPC MD       -   484,417.46  1,387,123.33   sFT  0.99995206   +0 09 54.6
 HV7251;UTM  18      - 4,317,823.206   349,591.161   MT  0.99987857   -1 05 35.4
 HV7251
 HV7251!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7251!SPC MD       -   0.99999838  x   0.99995206  =   0.99995044
 HV7251!UTM  18      -   0.99999838  x   0.99987857  =   0.99987695
 HV7251
 HV7251:                Primary Azimuth Mark                     Grid Az
 HV7251:SPC MD       -  WHITE MARSH RESET                        132 56 45.9
 HV7251:UTM  18      -  WHITE MARSH RESET                        134 12 15.9
 HV7251
 HV7251_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4959117823(NAD 83)
 HV7251
 HV7251|---------------------------------------------------------------------|
 HV7251| PID    Reference Object                     Distance      Geod. Az  |
 HV7251|                                                           dddmmss.s |
 HV7251| HV9583 WHITE MARSH RESET                   APPROX. 2.2 KM 1330640.5 |
 HV7251| HV7250 17463 WSSC 1970                     134.519 METERS 14606     |
 HV7251|---------------------------------------------------------------------|
 HV7251
 HV7251                          SUPERSEDED SURVEY CONTROL
 HV7251
 HV7251  NAD 83(1986)-  38 59 47.40431(N)    076 44 12.65842(W) AD(       ) 2
 HV7251  NAD 27      -  38 59 47.00759(N)    076 44 13.77265(W) AD(       ) 2
 HV7251  NGVD 29 (07/19/86)   43.2    (m)          142.     (f) VERT ANG       
 HV7251
 HV7251.Superseded values are not recommended for survey control.
 HV7251
 HV7251.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7251.See file dsdata.pdf to determine how the superseded data were derived.
 HV7251
 HV7251_MARKER: B = BOLT
 HV7251_SETTING: 0 = UNSPECIFIED SETTING
 HV7251_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7251
 HV7251  HISTORY     - Date     Condition        Report By
 HV7251  HISTORY     - 1969     MONUMENTED       WSSC
 HV7251
 HV7251                          STATION DESCRIPTION
 HV7251
 HV7251'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7251'THE STATION IS LOCATED .5 MILES EAST OF BOWIE RACE TRACK AND 1.1
 HV7251'MILE NORTHWEST OF ROUTE 450.
 HV7251'
 HV7251'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 450 AND ROUTE
 HV7251'3, GO WEST ON ROUTE 450 FOR 1.2 MILES TO BOWIE RACE TRACK ROAD ON
 HV7251'THE RIGHT.  GO NORTHWEST ON BOWIE RACE TRACK ROAD FOR 1.2 MILES TO
 HV7251'OVAL LANE.  GO RIGHT ON OVAL LANE TO OLDEN COURT.
 HV7251'
 HV7251'THE STATION MARK IS A BRASS BOLT IN A CONCRETE GUTTER OPPOSITE
 HV7251'HOUSE NO. 4604 AT THE END OF THE COURT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7250 ***********************************************************************
 HV7250  DESIGNATION -  17463 WSSC 1970
 HV7250  PID         -  HV7250
 HV7250  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7250  COUNTRY     -  US
 HV7250  USGS QUAD   -  BOWIE (2016)
 HV7250
 HV7250                         *CURRENT SURVEY CONTROL
 HV7250  ______________________________________________________________________
 HV7250* NAD 83(1991) POSITION- 38 59 43.78628(N) 076 44 09.52950(W)   ADJUSTED
 HV7250* NAVD 88 ORTHO HEIGHT -    37.6   (meters)      123.    (feet) VERTCON3
 HV7250  ______________________________________________________________________
 HV7250  GEOID HEIGHT    -        -32.670 (meters)                     GEOID18
 HV7250  LAPLACE CORR    -         -5.61  (seconds)                    DEFLEC18
 HV7250  HORZ ORDER      -  SECOND
 HV7250
 HV7250.The horizontal coordinates were established by classical geodetic methods
 HV7250.and adjusted by the National Geodetic Survey in January 1992.
 HV7250
 HV7250.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7250.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7250
 HV7250.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7250.GEOID18 height accuracy estimate available here.
 HV7250
 HV7250.Click photographs - Photos may exist for this station.
 HV7250
 HV7250.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7250
 HV7250. The following values were computed from the NAD 83(1991) position.
 HV7250
 HV7250;                    North         East     Units Scale Factor Converg.
 HV7250;SPC MD       -   147,539.313   422,871.388   MT  0.99995202   +0 09 56.5
 HV7250;SPC MD       -   484,051.90  1,387,370.55   sFT  0.99995202   +0 09 56.5
 HV7250;UTM  18      - 4,317,710.162   349,664.043   MT  0.99987830   -1 05 33.3
 HV7250
 HV7250!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7250!SPC MD       -   0.99999923  x   0.99995202  =   0.99995125
 HV7250!UTM  18      -   0.99999923  x   0.99987830  =   0.99987753
 HV7250
 HV7250_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4966417710(NAD 83)
 HV7250
 HV7250                          SUPERSEDED SURVEY CONTROL
 HV7250
 HV7250  NAD 83(1986)-  38 59 43.78379(N)    076 44 09.54038(W) AD(       ) 2
 HV7250  NAD 27      -  38 59 43.38703(N)    076 44 10.65470(W) AD(       ) 2
 HV7250  NGVD 29 (07/19/86)   37.8    (m)          124.     (f) VERT ANG       
 HV7250
 HV7250.Superseded values are not recommended for survey control.
 HV7250
 HV7250.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7250.See file dsdata.pdf to determine how the superseded data were derived.
 HV7250
 HV7250_MARKER: I = METAL ROD
 HV7250_SETTING: 0 = UNSPECIFIED SETTING
 HV7250_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7250
 HV7250  HISTORY     - Date     Condition        Report By
 HV7250  HISTORY     - 1969     MONUMENTED       WSSC
 HV7250
 HV7250                          STATION DESCRIPTION
 HV7250
 HV7250'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7250'THE STATION IS LOCATED .6 MILES EAST OF BOWIE RACE TRACK AND 1.0
 HV7250'MILES NORTHWEST OF ROUTE 450.
 HV7250'
 HV7250'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 450 AND ROUTE
 HV7250'3, GO WEST ON ROUTE 450 FOR 1.2 MILES TO RACE TRACK ROAD ON THE
 HV7250'RIGHT.  GO NORTHWEST ON RACE TRACK ROAD FOR 1.2 MILES TO OVAL
 HV7250'LANE TO THE INTERSECTION OF OVALSTONE LANE.
 HV7250'
 HV7250'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7250'AND IS .3 FEET BELOW THE SURFACE.  IT IS 74.34 FEET SOUTHEAST OF A
 HV7250'FIRE HYDRANT, 64.56 FEET SOUTHEAST OF AN X CUT IN THE LIGHT BASE,
 HV7250'42.33 FEET NORTH OF THE NORTHWEST CORNER OF HOUSE NO. 13115 AND
 HV7250'60.63 FEET NORTHWEST OF THE NORTHEAST CORNER OF HOUSE NO. 13115.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7487 ***********************************************************************
 HV7487  DESIGNATION -  17464 WSSC 1970
 HV7487  PID         -  HV7487
 HV7487  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7487  COUNTRY     -  US
 HV7487  USGS QUAD   -  LANHAM (2016)
 HV7487
 HV7487                         *CURRENT SURVEY CONTROL
 HV7487  ______________________________________________________________________
 HV7487* NAD 83(1991) POSITION- 38 56 26.71831(N) 076 49 27.72502(W)   ADJUSTED
 HV7487* NAVD 88 ORTHO HEIGHT -    50.2   (meters)      165.    (feet) VERTCON3
 HV7487  ______________________________________________________________________
 HV7487  GEOID HEIGHT    -        -32.487 (meters)                     GEOID18
 HV7487  LAPLACE CORR    -         -5.35  (seconds)                    DEFLEC18
 HV7487  HORZ ORDER      -  SECOND
 HV7487
 HV7487.The horizontal coordinates were established by classical geodetic methods
 HV7487.and adjusted by the National Geodetic Survey in January 1992.
 HV7487
 HV7487.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7487.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7487
 HV7487.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7487.GEOID18 height accuracy estimate available here.
 HV7487
 HV7487.Click photographs - Photos may exist for this station.
 HV7487
 HV7487.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7487
 HV7487. The following values were computed from the NAD 83(1991) position.
 HV7487
 HV7487;                    North         East     Units Scale Factor Converg.
 HV7487;SPC MD       -   141,444.107   415,226.280   MT  0.99995049   +0 06 36.8
 HV7487;SPC MD       -   464,054.54  1,362,288.22   sFT  0.99995049   +0 06 36.8
 HV7487;UTM  18      - 4,311,784.575   341,887.443   MT  0.99990784   -1 08 48.8
 HV7487
 HV7487!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7487!SPC MD       -   0.99999723  x   0.99995049  =   0.99994772
 HV7487!UTM  18      -   0.99999723  x   0.99990784  =   0.99990507
 HV7487
 HV7487:                Primary Azimuth Mark                     Grid Az
 HV7487:SPC MD       -  WOODMORE                                 130 29 38.4
 HV7487:UTM  18      -  WOODMORE                                 131 45 04.0
 HV7487
 HV7487_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4188711784(NAD 83)
 HV7487
 HV7487|---------------------------------------------------------------------|
 HV7487| PID    Reference Object                     Distance      Geod. Az  |
 HV7487|                                                           dddmmss.s |
 HV7487| HV7468 WOODMORE                            APPROX. 2.1 KM 1303615.2 |
 HV7487| HV7486 17465 WSSC 1970                     250.916 METERS 16955     |
 HV7487|---------------------------------------------------------------------|
 HV7487
 HV7487                          SUPERSEDED SURVEY CONTROL
 HV7487
 HV7487  NAD 83(1986)-  38 56 26.71631(N)    076 49 27.73661(W) AD(       ) 2
 HV7487  NAD 27      -  38 56 26.31676(N)    076 49 28.84147(W) AD(       ) 2
 HV7487  NGVD 29 (07/19/86)   50.4    (m)          165.     (f) VERT ANG       
 HV7487
 HV7487.Superseded values are not recommended for survey control.
 HV7487
 HV7487.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7487.See file dsdata.pdf to determine how the superseded data were derived.
 HV7487
 HV7487_MARKER: I = METAL ROD
 HV7487_SETTING: 0 = UNSPECIFIED SETTING
 HV7487_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7487
 HV7487  HISTORY     - Date     Condition        Report By
 HV7487  HISTORY     - 1969     MONUMENTED       WSSC
 HV7487
 HV7487                          STATION DESCRIPTION
 HV7487
 HV7487'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7487'THE STATION IS LOCATED .5 MILES SOUTH OF ROUTE 50 (JOHN HANSON
 HV7487'HIGHWAY) AND EAST OF ARDMORE ON LOTTSFORD VISTA ROAD.
 HV7487'
 HV7487'TO REACH THE STATION FROM ROUTE 50, GO SOUTH ON LOTTSFORD VISTA
 HV7487'ROAD FOR .50 MILES TO THE STATION ON THE RIGHT.
 HV7487'
 HV7487'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7487'CENTER AND IS .9 FEET BELOW THE SURFACE.  IT IS 5.7 FEET WEST
 HV7487'OF THE EDGE OF THE ROAD, 31.79 FEET WEST OF A 15-INCH LOCUST,
 HV7487'19.86 FEET EAST OF G AND E POLE NO. 217376, AND 65.93 FEET
 HV7487'NORTHEAST OF A CORNER OF HOUSE NO. 3702.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7486 ***********************************************************************
 HV7486  DESIGNATION -  17465 WSSC 1970
 HV7486  PID         -  HV7486
 HV7486  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7486  COUNTRY     -  US
 HV7486  USGS QUAD   -  LANHAM (2016)
 HV7486
 HV7486                         *CURRENT SURVEY CONTROL
 HV7486  ______________________________________________________________________
 HV7486* NAD 83(1991) POSITION- 38 56 18.70736(N) 076 49 25.89995(W)   ADJUSTED
 HV7486* NAVD 88 ORTHO HEIGHT -    45.5   (meters)      149.    (feet) VERTCON3
 HV7486  ______________________________________________________________________
 HV7486  GEOID HEIGHT    -        -32.491 (meters)                     GEOID18
 HV7486  LAPLACE CORR    -         -5.34  (seconds)                    DEFLEC18
 HV7486  HORZ ORDER      -  SECOND
 HV7486
 HV7486.The horizontal coordinates were established by classical geodetic methods
 HV7486.and adjusted by the National Geodetic Survey in January 1992.
 HV7486
 HV7486.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7486.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7486
 HV7486.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7486.GEOID18 height accuracy estimate available here.
 HV7486
 HV7486.Click photographs - Photos may exist for this station.
 HV7486
 HV7486.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7486
 HV7486. The following values were computed from the NAD 83(1991) position.
 HV7486
 HV7486;                    North         East     Units Scale Factor Converg.
 HV7486;SPC MD       -   141,197.168   415,270.707   MT  0.99995045   +0 06 38.0
 HV7486;SPC MD       -   463,244.38  1,362,433.98   sFT  0.99995045   +0 06 38.0
 HV7486;UTM  18      - 4,311,536.732   341,926.440   MT  0.99990769   -1 08 47.4
 HV7486
 HV7486!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7486!SPC MD       -   0.99999797  x   0.99995045  =   0.99994842
 HV7486!UTM  18      -   0.99999797  x   0.99990769  =   0.99990566
 HV7486
 HV7486:                Primary Azimuth Mark                     Grid Az
 HV7486:SPC MD       -  GLENN DALE WSSC TANK                     025 13 18.5
 HV7486:UTM  18      -  GLENN DALE WSSC TANK                     026 28 43.9
 HV7486
 HV7486_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4192611536(NAD 83)
 HV7486
 HV7486|---------------------------------------------------------------------|
 HV7486| PID    Reference Object                     Distance      Geod. Az  |
 HV7486|                                                           dddmmss.s |
 HV7486| HV7467 GLENN DALE SANITORIUM TANK          APPROX. 3.1 KM 0244018.9 |
 HV7486| HV7465 GLENN DALE WSSC TANK                APPROX. 2.4 KM 0251956.5 |
 HV7486| HV7487 17464 WSSC 1970                     250.916 METERS 34955     |
 HV7486|---------------------------------------------------------------------|
 HV7486
 HV7486                          SUPERSEDED SURVEY CONTROL
 HV7486
 HV7486  NAD 83(1986)-  38 56 18.70537(N)    076 49 25.91157(W) AD(       ) 2
 HV7486  NAD 27      -  38 56 18.30579(N)    076 49 27.01648(W) AD(       ) 2
 HV7486  NGVD 29 (07/19/86)   45.7    (m)          150.     (f) VERT ANG       
 HV7486
 HV7486.Superseded values are not recommended for survey control.
 HV7486
 HV7486.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7486.See file dsdata.pdf to determine how the superseded data were derived.
 HV7486
 HV7486_MARKER: I = METAL ROD
 HV7486_SETTING: 0 = UNSPECIFIED SETTING
 HV7486_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7486
 HV7486  HISTORY     - Date     Condition        Report By
 HV7486  HISTORY     - 1969     MONUMENTED       WSSC
 HV7486
 HV7486                          STATION DESCRIPTION
 HV7486
 HV7486'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7486'THE STATION IS LOCATED .65 MILES SOUTH OF ROUTE 50 (JOHN
 HV7486'HANSON HIGHWAY) AND EAST OF ARDMORE ON LOTTSFORD VISTA ROAD.
 HV7486'
 HV7486'TO REACH THE STATION FROM ROUTE 50, GO SOUTH ON LOTTSFORD VISTA
 HV7486'ROAD FOR .65 MILES TO THE STATION ON THE LEFT.
 HV7486'
 HV7486'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7486'CENTER AND IS 1 FOOT BELOW THE SURFACE.  IT IS 4.5 FEET EAST
 HV7486'OF THE EDGE OF THE ROAD, 2.4 FEET WEST OF A WITNESS POST,
 HV7486'14.27 FEET SOUTHWEST OF A TACK IN A FENCE POST, 3.96 FEET
 HV7486'WEST OF A TACK IN A FENCE POST, AND 13.64 FEET NORTHWEST
 HV7486'OF A TACK IN THE FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7626 ***********************************************************************
 HV7626  DESIGNATION -  17466 WSSC 1970
 HV7626  PID         -  HV7626
 HV7626  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7626  COUNTRY     -  US
 HV7626  USGS QUAD   -  ANACOSTIA (2016)
 HV7626
 HV7626                         *CURRENT SURVEY CONTROL
 HV7626  ______________________________________________________________________
 HV7626* NAD 83(1993) POSITION- 38 50 12.01356(N) 076 54 48.06811(W)   ADJUSTED
 HV7626* NAVD 88 ORTHO HEIGHT -    70.6   (meters)      232.    (feet) VERTCON3
 HV7626  ______________________________________________________________________
 HV7626  GEOID HEIGHT    -        -32.403 (meters)                     GEOID18
 HV7626  LAPLACE CORR    -         -4.52  (seconds)                    DEFLEC18
 HV7626  HORZ ORDER      -  SECOND
 HV7626
 HV7626.The horizontal coordinates were established by classical geodetic methods
 HV7626.and adjusted by the National Geodetic Survey in November 1994.
 HV7626
 HV7626.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7626.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7626
 HV7626.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7626.GEOID18 height accuracy estimate available here.
 HV7626
 HV7626.Click photographs - Photos may exist for this station.
 HV7626
 HV7626.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7626
 HV7626. The following values were computed from the NAD 83(1993) position.
 HV7626
 HV7626;                    North         East     Units Scale Factor Converg.
 HV7626;SPC MD       -   129,878.820   407,522.832   MT  0.99995008   +0 03 15.8
 HV7626;SPC MD       -   426,110.76  1,337,014.49   sFT  0.99995008   +0 03 15.8
 HV7626;UTM  18      - 4,300,391.203   333,932.581   MT  0.99993961   -1 12 00.5
 HV7626
 HV7626!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7626!SPC MD       -   0.99999401  x   0.99995008  =   0.99994409
 HV7626!UTM  18      -   0.99999401  x   0.99993961  =   0.99993362
 HV7626
 HV7626:                Primary Azimuth Mark                     Grid Az
 HV7626:SPC MD       -  WOOD RM 5                                173 18 32.6
 HV7626:UTM  18      -  WOOD RM 5                                174 33 48.9
 HV7626
 HV7626_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3393200391(NAD 83)
 HV7626
 HV7626|---------------------------------------------------------------------|
 HV7626| PID    Reference Object                     Distance      Geod. Az  |
 HV7626|                                                           dddmmss.s |
 HV7626| HV7624 17467 WSSC 1970                     282.920 METERS 03248     |
 HV7626| HV1052 WOOD RM 5                           APPROX. 1.4 KM 1732148.4 |
 HV7626|---------------------------------------------------------------------|
 HV7626
 HV7626                          SUPERSEDED SURVEY CONTROL
 HV7626
 HV7626  NAD 83(1991)-  38 50 12.01276(N)    076 54 48.06862(W) AD(       ) 2
 HV7626  NAD 83(1986)-  38 50 12.01158(N)    076 54 48.08111(W) AD(       ) 2
 HV7626  NAD 27      -  38 50 11.60514(N)    076 54 49.17625(W) AD(       ) 2
 HV7626  NGVD 29 (07/19/86)   70.8    (m)          232.     (f) VERT ANG       
 HV7626
 HV7626.Superseded values are not recommended for survey control.
 HV7626
 HV7626.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7626.See file dsdata.pdf to determine how the superseded data were derived.
 HV7626
 HV7626_MARKER: I = METAL ROD
 HV7626_SETTING: 0 = UNSPECIFIED SETTING
 HV7626_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7626_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7626+SATELLITE: SATELLITE OBSERVATIONS - May 05, 2007
 HV7626
 HV7626  HISTORY     - Date     Condition        Report By
 HV7626  HISTORY     - 1969     MONUMENTED       WSSC
 HV7626  HISTORY     - 20070505 GOOD             INDIV
 HV7626
 HV7626                          STATION DESCRIPTION
 HV7626
 HV7626'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7626'THE STATION IS LOCATED ABOUT 1.0 MILES SOUTHEAST OF SUITLAND
 HV7626'AND .20 MILES NORTH OF SUITLAND PARKWAY.
 HV7626'
 HV7626'TO REACH THE STATION FROM SUITLAND ROAD (ROUTE 218), GO SOUTH
 HV7626'ON REGENCY PARKWAY FOR 1000 FEET TO THE STATION ON THE LEFT.
 HV7626'
 HV7626'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7626'CENTER AND IS .8 FEET BELOW THE SURFACE.  IT IS 78.74 FEET
 HV7626'NORTH OF A FIRE HYDRANT, 21.59 FEET SOUTHWEST OF AN X CUT IN
 HV7626'THE NORTHWEST CORNER OF A CATCH BASIN AND 18.02 FEET WEST
 HV7626'OF AN X CUT IN THE CORNER OF A CURB AT IMPERIAL GARDENS
 HV7626'APARTMENTS.
 HV7626
 HV7626                          STATION RECOVERY (2007)
 HV7626
 HV7626'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (WFA)
 HV7626'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7624 ***********************************************************************
 HV7624  DESIGNATION -  17467 WSSC 1970
 HV7624  PID         -  HV7624
 HV7624  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7624  COUNTRY     -  US
 HV7624  USGS QUAD   -  ANACOSTIA (2016)
 HV7624
 HV7624                         *CURRENT SURVEY CONTROL
 HV7624  ______________________________________________________________________
 HV7624* NAD 83(1993) POSITION- 38 50 19.72505(N) 076 54 41.71241(W)   ADJUSTED
 HV7624* NAVD 88 ORTHO HEIGHT -    72.4   (meters)      238.    (feet) VERTCON3
 HV7624  ______________________________________________________________________
 HV7624  GEOID HEIGHT    -        -32.403 (meters)                     GEOID18
 HV7624  LAPLACE CORR    -         -4.54  (seconds)                    DEFLEC18
 HV7624  HORZ ORDER      -  SECOND
 HV7624
 HV7624.The horizontal coordinates were established by classical geodetic methods
 HV7624.and adjusted by the National Geodetic Survey in November 1994.
 HV7624
 HV7624.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7624.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7624
 HV7624.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7624.GEOID18 height accuracy estimate available here.
 HV7624
 HV7624.Click photographs - Photos may exist for this station.
 HV7624
 HV7624.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7624
 HV7624. The following values were computed from the NAD 83(1993) position.
 HV7624
 HV7624;                    North         East     Units Scale Factor Converg.
 HV7624;SPC MD       -   130,116.753   407,675.881   MT  0.99995006   +0 03 19.8
 HV7624;SPC MD       -   426,891.38  1,337,516.62   sFT  0.99995006   +0 03 19.8
 HV7624;UTM  18      - 4,300,625.725   334,090.802   MT  0.99993896   -1 11 56.7
 HV7624
 HV7624!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7624!SPC MD       -   0.99999373  x   0.99995006  =   0.99994379
 HV7624!UTM  18      -   0.99999373  x   0.99993896  =   0.99993269
 HV7624
 HV7624_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3409000625(NAD 83)
 HV7624
 HV7624                          SUPERSEDED SURVEY CONTROL
 HV7624
 HV7624  NAD 83(1991)-  38 50 19.72425(N)    076 54 41.71293(W) AD(       ) 2
 HV7624  NAD 83(1986)-  38 50 19.72306(N)    076 54 41.72539(W) AD(       ) 2
 HV7624  NAD 27      -  38 50 19.31672(N)    076 54 42.82071(W) AD(       ) 2
 HV7624  NGVD 29 (07/19/86)   72.6    (m)          238.     (f) VERT ANG       
 HV7624
 HV7624.Superseded values are not recommended for survey control.
 HV7624
 HV7624.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7624.See file dsdata.pdf to determine how the superseded data were derived.
 HV7624
 HV7624_MARKER: I = METAL ROD
 HV7624_SETTING: 0 = UNSPECIFIED SETTING
 HV7624_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7624_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7624+SATELLITE: SATELLITE OBSERVATIONS - May 05, 2007
 HV7624
 HV7624  HISTORY     - Date     Condition        Report By
 HV7624  HISTORY     - 1969     MONUMENTED       WSSC
 HV7624  HISTORY     - 20070505 GOOD             INDIV
 HV7624
 HV7624                          STATION DESCRIPTION
 HV7624
 HV7624'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7624'THE STATION IS LOCATED ABOUT 1.0 MILE SOUTHEAST OF SUITLAND
 HV7624'ON THE SOUTH SIDE OF SUITLAND ROAD, .5 MILES NORTHWEST OF
 HV7624'SUITLAND PARKWAY.
 HV7624'
 HV7624'THE STATION IS AT THE SOUTHEAST CORNER OF THE INTERSECTION
 HV7624'OF REGENCE PARKWAY AND SUITLAND ROAD.
 HV7624'
 HV7624'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7624'CENTER AND IS .1 FOOT BELOW THE SURFACE.  IT IS 14.07 FEET
 HV7624'SOUTHWEST OF POLE NO. TR 2482, 57.80 FEET NORTHWEST OF THE
 HV7624'CORNER OF A BUILDING, AND 59.82 FEET NORTH OF AN X CUT
 HV7624'IN THE NORTH END OF A CATCH BASIN.
 HV7624
 HV7624                          STATION RECOVERY (2007)
 HV7624
 HV7624'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (WFA)
 HV7624'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7235 ***********************************************************************
 HV7235  DESIGNATION -  17468 WSSC 1970
 HV7235  PID         -  HV7235
 HV7235  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7235  COUNTRY     -  US
 HV7235  USGS QUAD   -  BRISTOL (2016)
 HV7235
 HV7235                         *CURRENT SURVEY CONTROL
 HV7235  ______________________________________________________________________
 HV7235* NAD 83(1993) POSITION- 38 49 29.18789(N) 076 44 58.84856(W)   ADJUSTED
 HV7235* NAVD 88 ORTHO HEIGHT -    41.8   (meters)      137.    (feet) VERTCON3
 HV7235  ______________________________________________________________________
 HV7235  GEOID HEIGHT    -        -32.908 (meters)                     GEOID18
 HV7235  LAPLACE CORR    -         -5.88  (seconds)                    DEFLEC18
 HV7235  HORZ ORDER      -  SECOND
 HV7235
 HV7235.The horizontal coordinates were established by classical geodetic methods
 HV7235.and adjusted by the National Geodetic Survey in November 1994.
 HV7235
 HV7235.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7235.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7235
 HV7235.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7235.GEOID18 height accuracy estimate available here.
 HV7235
 HV7235.Click photographs - Photos may exist for this station.
 HV7235
 HV7235.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7235
 HV7235. The following values were computed from the NAD 83(1993) position.
 HV7235
 HV7235;                    North         East     Units Scale Factor Converg.
 HV7235;SPC MD       -   128,584.514   421,736.581   MT  0.99995024   +0 09 25.6
 HV7235;SPC MD       -   421,864.36  1,383,647.43   sFT  0.99995024   +0 09 25.6
 HV7235;UTM  18      - 4,298,786.109   348,114.041   MT  0.99988408   -1 05 49.8
 HV7235
 HV7235!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7235!SPC MD       -   0.99999861  x   0.99995024  =   0.99994885
 HV7235!UTM  18      -   0.99999861  x   0.99988408  =   0.99988269
 HV7235
 HV7235:                Primary Azimuth Mark                     Grid Az
 HV7235:SPC MD       -  WYVILLE RM 4                             079 59 24.4
 HV7235:UTM  18      -  WYVILLE RM 4                             081 14 39.8
 HV7235
 HV7235_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4811498786(NAD 83)
 HV7235
 HV7235|---------------------------------------------------------------------|
 HV7235| PID    Reference Object                     Distance      Geod. Az  |
 HV7235|                                                           dddmmss.s |
 HV7235| HV0903 WYVILLE RM 4                        APPROX. 1.8 KM 0800850.0 |
 HV7235|---------------------------------------------------------------------|
 HV7235
 HV7235                          SUPERSEDED SURVEY CONTROL
 HV7235
 HV7235  NAD 83(1991)-  38 49 29.18777(N)    076 44 58.84853(W) AD(       ) 2
 HV7235  NAD 83(1986)-  38 49 29.18487(N)    076 44 58.86178(W) AD(       ) 2
 HV7235  NAD 27      -  38 49 28.77708(N)    076 44 59.97305(W) AD(       ) 2
 HV7235  NGVD 29 (07/19/86)   42.0    (m)          138.     (f) VERT ANG       
 HV7235
 HV7235.Superseded values are not recommended for survey control.
 HV7235
 HV7235.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7235.See file dsdata.pdf to determine how the superseded data were derived.
 HV7235
 HV7235_MARKER: Z = SEE DESCRIPTION
 HV7235_SETTING: 0 = UNSPECIFIED SETTING
 HV7235_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7235
 HV7235  HISTORY     - Date     Condition        Report By
 HV7235  HISTORY     - 1969     MONUMENTED       WSSC
 HV7235
 HV7235                          STATION DESCRIPTION
 HV7235
 HV7235'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7235'THE STATION IS LOCATED ON THE EAST SIDE OF ROUTE 202, 3000 FEET
 HV7235'NORTH OF ROUTE 408 (MAIN STREET), NORTHWEST OF UPPER MARLBORO.
 HV7235'
 HV7235'TO REACH THE STATION FROM ROUTE 408, GO NORTH ON ROUTE 202 TO ST.
 HV7235'MARYS CHURCH AND THE STATION IS ON THE RIGHT.
 HV7235'
 HV7235'THE STATION MARK IS A BRASS SCREW IN THE CONCRETE CURB, 8 FEET
 HV7235'FROM THE SOUTH END OF THE CURB AT THE SOUTHWEST END OF THE PARKING
 HV7235'LOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7233 ***********************************************************************
 HV7233  DESIGNATION -  17469 WSSC 1970
 HV7233  PID         -  HV7233
 HV7233  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7233  COUNTRY     -  US
 HV7233  USGS QUAD   -  BRISTOL (2016)
 HV7233
 HV7233                         *CURRENT SURVEY CONTROL
 HV7233  ______________________________________________________________________
 HV7233* NAD 83(1993) POSITION- 38 48 50.13370(N) 076 44 07.08471(W)   ADJUSTED
 HV7233* NAVD 88 ORTHO HEIGHT -    18.2   (meters)       60.    (feet) VERTCON3
 HV7233  ______________________________________________________________________
 HV7233  GEOID HEIGHT    -        -32.975 (meters)                     GEOID18
 HV7233  LAPLACE CORR    -         -5.84  (seconds)                    DEFLEC18
 HV7233  HORZ ORDER      -  SECOND
 HV7233
 HV7233.The horizontal coordinates were established by classical geodetic methods
 HV7233.and adjusted by the National Geodetic Survey in November 1994.
 HV7233
 HV7233.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7233.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7233
 HV7233.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7233.GEOID18 height accuracy estimate available here.
 HV7233
 HV7233.Click photographs - Photos may exist for this station.
 HV7233
 HV7233.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7233
 HV7233. The following values were computed from the NAD 83(1993) position.
 HV7233
 HV7233;                    North         East     Units Scale Factor Converg.
 HV7233;SPC MD       -   127,383.799   422,988.660   MT  0.99995043   +0 09 58.1
 HV7233;SPC MD       -   417,925.01  1,387,755.30   sFT  0.99995043   +0 09 58.1
 HV7233;UTM  18      - 4,297,558.362   349,339.456   MT  0.99987951   -1 05 16.4
 HV7233
 HV7233!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7233!SPC MD       -   1.00000232  x   0.99995043  =   0.99995275
 HV7233!UTM  18      -   1.00000232  x   0.99987951  =   0.99988183
 HV7233
 HV7233:                Primary Azimuth Mark                     Grid Az
 HV7233:SPC MD       -  17468 WSSC 1970                          313 48 01.2
 HV7233:UTM  18      -  17468 WSSC 1970                          315 03 15.7
 HV7233
 HV7233_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4933997558(NAD 83)
 HV7233
 HV7233|---------------------------------------------------------------------|
 HV7233| PID    Reference Object                     Distance      Geod. Az  |
 HV7233|                                                           dddmmss.s |
 HV7233| HV7230 UPPER MARLBORO RACE TRACK TANK      APPROX. 1.0 KM 2635441.0 |
 HV7233| HV7235 17468 WSSC 1970                     APPROX. 1.7 KM 3135759.3 |
 HV7233| HV7229 UPPER MARLBORO GEISK NIEMAN TK      APPROX. 0.9 KM 3181509.4 |
 HV7233|---------------------------------------------------------------------|
 HV7233
 HV7233                          SUPERSEDED SURVEY CONTROL
 HV7233
 HV7233  NAD 83(1991)-  38 48 50.13360(N)    076 44 07.08466(W) AD(       ) 2
 HV7233  NAD 83(1986)-  38 48 50.13054(N)    076 44 07.09808(W) AD(       ) 2
 HV7233  NAD 27      -  38 48 49.72040(N)    076 44 08.20781(W) AD(       ) 2
 HV7233  NGVD 29 (07/19/86)   18.4    (m)           60.     (f) VERT ANG       
 HV7233
 HV7233.Superseded values are not recommended for survey control.
 HV7233
 HV7233.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7233.See file dsdata.pdf to determine how the superseded data were derived.
 HV7233
 HV7233_MARKER: B = BOLT
 HV7233_SETTING: 0 = UNSPECIFIED SETTING
 HV7233_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7233
 HV7233  HISTORY     - Date     Condition        Report By
 HV7233  HISTORY     - 1969     MONUMENTED       WSSC
 HV7233
 HV7233                          STATION DESCRIPTION
 HV7233
 HV7233'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7233'THE STATION IS LOCATED EAST OF UPPER MARLBORO IN THE CENTER LINE
 HV7233'OF ROUTE 4, .2 MILES EAST OF ROUTE 301.
 HV7233'
 HV7233'TO REACH THE STATION FROM ROUTE 301, GO EAST ON ROUTE 4 FOR .20
 HV7233'MILES TO THE STATION ON THE LEFT.
 HV7233'
 HV7233'THE STATION MARK IS A BRASS BOLT IN THE CONCRETE SPILLWAY AT END.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2345 ***********************************************************************
 HV2345  DESIGNATION -  1747 WSSC
 HV2345  PID         -  HV2345
 HV2345  STATE/COUNTY-  MD/MONTGOMERY
 HV2345  COUNTRY     -  US
 HV2345  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2345
 HV2345                         *CURRENT SURVEY CONTROL
 HV2345  ______________________________________________________________________
 HV2345* NAD 83(1986) POSITION- 38 58 44.     (N) 077 00 19.     (W)   SCALED
 HV2345* NAVD 88 ORTHO HEIGHT -    84.96  (+/-2cm)      278.7   (feet) VERTCON3
 HV2345  ______________________________________________________________________
 HV2345  GEOID HEIGHT    -        -32.014 (meters)                     GEOID18
 HV2345  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV2345
 HV2345.The horizontal coordinates were scaled from a map and have
 HV2345.an estimated accuracy of +/- 6 seconds.
 HV2345
 HV2345.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2345.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2345
 HV2345.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2345.GEOID18 height accuracy estimate available here.
 HV2345
 HV2345.The vertical order pertains to the NGVD 29 superseded value.
 HV2345
 HV2345.Click photographs - Photos may exist for this station.
 HV2345
 HV2345;                    North         East    Units  Estimated Accuracy
 HV2345;SPC MD       -   145,660.      399,540.      MT  (+/- 180 meters Scaled)
 HV2345
 HV2345_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ263163(NAD 83)
 HV2345
 HV2345                          SUPERSEDED SURVEY CONTROL
 HV2345
 HV2345  NGVD 29 (11/26/84)   85.175  (m)          279.45   (f) ADJUSTED    2 0
 HV2345
 HV2345.Superseded values are not recommended for survey control.
 HV2345
 HV2345.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2345.See file dsdata.pdf to determine how the superseded data were derived.
 HV2345
 HV2345_MARKER: DD = SURVEY DISK
 HV2345_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2345_STAMPING: 1747
 HV2345_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2345
 HV2345  HISTORY     - Date     Condition        Report By
 HV2345  HISTORY     - UNK      MONUMENTED       WSSC
 HV2345  HISTORY     - 1952     GOOD             CGS
 HV2345
 HV2345                          STATION DESCRIPTION
 HV2345
 HV2345'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV2345'AT TAKOMA PARK.
 HV2345'AT TAKOMA PARK, MONTGOMERY COUNTY, AT THE JUNCTION OF CARROLL
 HV2345'AVENUE AND LEE AVENUE, IN THE LAWN AT THE NORTH QUARTER, 3.8
 HV2345'FEET FROM THE NEAR EDGE OF THE SIDEWALK ON LEE AVENUE, 2 FEET
 HV2345'IN FORM THE HEDGE LINE, 36.7 FEET FROM THE SOUTH CORNER OF THE
 HV2345'HOUSE AND 11.3 FEET FROM THE CENTER OF A TREE (BIG TRUNK NEW
 HV2345'BRANCHES EAST YEAR).  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV2345'STANDARD DISK, STAMPED 1747 AND FASTENED TO THE TOP OF A
 HV2345'2-INCH IRON PIPE ABOUT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7373 ***********************************************************************
 HV7373  DESIGNATION -  17470 WSSC 1970
 HV7373  PID         -  HV7373
 HV7373  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7373  COUNTRY     -  US
 HV7373  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7373
 HV7373                         *CURRENT SURVEY CONTROL
 HV7373  ______________________________________________________________________
 HV7373* NAD 83(1993) POSITION- 38 37 43.39069(N) 076 43 39.31725(W)   ADJUSTED
 HV7373* NAVD 88 ORTHO HEIGHT -    41.2   (meters)      135.    (feet) VERTCON3
 HV7373  ______________________________________________________________________
 HV7373  GEOID HEIGHT    -        -33.383 (meters)                     GEOID18
 HV7373  LAPLACE CORR    -         -3.88  (seconds)                    DEFLEC18
 HV7373  HORZ ORDER      -  SECOND
 HV7373
 HV7373.The horizontal coordinates were established by classical geodetic methods
 HV7373.and adjusted by the National Geodetic Survey in November 1994.
 HV7373
 HV7373.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7373.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7373
 HV7373.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7373.GEOID18 height accuracy estimate available here.
 HV7373
 HV7373.Click photographs - Photos may exist for this station.
 HV7373
 HV7373.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7373
 HV7373. The following values were computed from the NAD 83(1993) position.
 HV7373
 HV7373;                    North         East     Units Scale Factor Converg.
 HV7373;SPC MD       -   106,827.017   423,719.885   MT  0.99995910   +0 10 15.5
 HV7373;SPC MD       -   350,481.64  1,390,154.32   sFT  0.99995910   +0 10 15.5
 HV7373;UTM  18      - 4,276,992.051   349,621.383   MT  0.99987848   -1 04 43.3
 HV7373
 HV7373!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7373!SPC MD       -   0.99999877  x   0.99995910  =   0.99995787
 HV7373!UTM  18      -   0.99999877  x   0.99987848  =   0.99987725
 HV7373
 HV7373_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4962176992(NAD 83)
 HV7373
 HV7373                          SUPERSEDED SURVEY CONTROL
 HV7373
 HV7373  NAD 83(1991)-  38 37 43.39000(N)    076 43 39.31817(W) AD(       ) 2
 HV7373  NAD 83(1986)-  38 37 43.38849(N)    076 43 39.33331(W) AD(       ) 2
 HV7373  NAD 27      -  38 37 42.96179(N)    076 43 40.45515(W) AD(       ) 2
 HV7373  NGVD 29 (07/19/86)   41.5    (m)          136.     (f) VERT ANG       
 HV7373
 HV7373.Superseded values are not recommended for survey control.
 HV7373
 HV7373.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7373.See file dsdata.pdf to determine how the superseded data were derived.
 HV7373
 HV7373_MARKER: I = METAL ROD
 HV7373_SETTING: 0 = UNSPECIFIED SETTING
 HV7373_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7373
 HV7373  HISTORY     - Date     Condition        Report By
 HV7373  HISTORY     - 1969     MONUMENTED       WSSC
 HV7373
 HV7373                          STATION DESCRIPTION
 HV7373
 HV7373'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7373'THE STATION IS LOCATED ON THE EAST SIDE OF ROUTE 382, .90 MILES
 HV7373'NORTHEAST OF ROUTE 381.
 HV7373'
 HV7373'TO REACH THE STATION FROM ROUTE 381, GO NORTHEAST ON ROUTE 382 FOR
 HV7373'.90 MILES TO THE STATION ON THE RIGHT.
 HV7373'
 HV7373'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7373'AND IS .4 FEET BELOW THE SURFACE.  IT IS 15.81 FEET SOUTH OF A
 HV7373'POLE, 15.18 FEET WEST OF THE NORTHWEST CORNER OF A MOBIL STATION,
 HV7373'AND 19.47 FEET NORTHWEST OF A CORNER OF A MOBIL STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7403 ***********************************************************************
 HV7403  DESIGNATION -  17471 WSSC 1970
 HV7403  PID         -  HV7403
 HV7403  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7403  COUNTRY     -  US
 HV7403  USGS QUAD   -  BRANDYWINE (2016)
 HV7403
 HV7403                         *CURRENT SURVEY CONTROL
 HV7403  ______________________________________________________________________
 HV7403* NAD 83(1993) POSITION- 38 43 57.13862(N) 076 46 52.55569(W)   ADJUSTED
 HV7403* NAVD 88 ORTHO HEIGHT -    64.8   (meters)      213.    (feet) VERTCON3
 HV7403  ______________________________________________________________________
 HV7403  GEOID HEIGHT    -        -33.017 (meters)                     GEOID18
 HV7403  LAPLACE CORR    -         -6.14  (seconds)                    DEFLEC18
 HV7403  HORZ ORDER      -  SECOND
 HV7403
 HV7403.The horizontal coordinates were established by classical geodetic methods
 HV7403.and adjusted by the National Geodetic Survey in November 1994.
 HV7403
 HV7403.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7403.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7403
 HV7403.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7403.GEOID18 height accuracy estimate available here.
 HV7403
 HV7403.Click photographs - Photos may exist for this station.
 HV7403
 HV7403.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7403
 HV7403. The following values were computed from the NAD 83(1993) position.
 HV7403
 HV7403;                    North         East     Units Scale Factor Converg.
 HV7403;SPC MD       -   118,338.770   419,018.402   MT  0.99995296   +0 08 14.2
 HV7403;SPC MD       -   388,249.78  1,374,729.54   sFT  0.99995296   +0 08 14.2
 HV7403;UTM  18      - 4,288,602.891   345,172.621   MT  0.99989520   -1 06 53.0
 HV7403
 HV7403!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7403!SPC MD       -   0.99999502  x   0.99995296  =   0.99994798
 HV7403!UTM  18      -   0.99999502  x   0.99989520  =   0.99989022
 HV7403
 HV7403:                Primary Azimuth Mark                     Grid Az
 HV7403:SPC MD       -  W 36                                     157 11 20.9
 HV7403:UTM  18      -  W 36                                     158 26 28.1
 HV7403
 HV7403_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4517288602(NAD 83)
 HV7403
 HV7403|---------------------------------------------------------------------|
 HV7403| PID    Reference Object                     Distance      Geod. Az  |
 HV7403|                                                           dddmmss.s |
 HV7403| HV7379 W 36                                APPROX. 1.5 KM 1571935.1 |
 HV7403|---------------------------------------------------------------------|
 HV7403
 HV7403                          SUPERSEDED SURVEY CONTROL
 HV7403
 HV7403  NAD 83(1991)-  38 43 57.13854(N)    076 46 52.55590(W) AD(       ) 2
 HV7403  NAD 83(1986)-  38 43 57.13583(N)    076 46 52.57030(W) AD(       ) 2
 HV7403  NAD 27      -  38 43 56.72147(N)    076 46 53.68114(W) AD(       ) 2
 HV7403  NGVD 29 (07/19/86)   65.0    (m)          213.     (f) VERT ANG       
 HV7403
 HV7403.Superseded values are not recommended for survey control.
 HV7403
 HV7403.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7403.See file dsdata.pdf to determine how the superseded data were derived.
 HV7403
 HV7403_MARKER: I = METAL ROD
 HV7403_SETTING: 0 = UNSPECIFIED SETTING
 HV7403_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7403
 HV7403  HISTORY     - Date     Condition        Report By
 HV7403  HISTORY     - 1969     MONUMENTED       WSSC
 HV7403
 HV7403                          STATION DESCRIPTION
 HV7403
 HV7403'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7403'THE STATION IS LOCATED 3.0 MILES EAST OF ROUTE 301, .3 MILES
 HV7403'NORTH OF VAN BRADY ROAD ON PEPCO RIGHT OF WAY STATION 477+40.35.
 HV7403'
 HV7403'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 301 AND
 HV7403'OLD INDIAN HEAD ROAD, GO NORTHEAST ON OLD INDIAN HEAD ROAD
 HV7403'FOR .8 MILES TO THE ROAD ON THE RIGHT.  TURN RIGHT AND GO .2
 HV7403'MILES NORTHEAST TO VAN BRADY ROAD, GO SOUTHEAST ON VAN BRADY
 HV7403'ROAD FOR .7 MILES TO PEPCO RIGHT OF WAY.  CONTINUE SOUTHEAST
 HV7403'ON VAN BRADY ROAD FOR 1.4 MILES TO THE 2ND PEPCO RIGHT OF
 HV7403'WAY.  TURN LEFT AND PROCEED NORTH ALONG THE PEPCO RIGHT OF WAY
 HV7403'FOR .3 MILES TO TOWER NO. 423-E.
 HV7403'
 HV7403'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7403'CENTER AND IS .6 FEET BELOW THE SURFACE.  IT IS 40.33 FEET
 HV7403'SOUTH OF THE SOUTHEAST LEG OF TOWER NO. 423-E, 61.28 FEET
 HV7403'SOUTH OF THE SOUTHWEST LEG OF TOWER NO. 423-E, 71.96 FEET
 HV7403'SOUTHEAST OF THE SOUTHEAST LEG OF TOWER NO. 423-W, AND 87.12
 HV7403'SOUTHEAST OF THE SOUTHWEST LEG OF TOWER NO. 423-W.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7405 ***********************************************************************
 HV7405  DESIGNATION -  17472 WSSC 1970
 HV7405  PID         -  HV7405
 HV7405  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7405  COUNTRY     -  US
 HV7405  USGS QUAD   -  BRANDYWINE (2016)
 HV7405
 HV7405                         *CURRENT SURVEY CONTROL
 HV7405  ______________________________________________________________________
 HV7405* NAD 83(1993) POSITION- 38 43 15.87301(N) 076 47 56.64372(W)   ADJUSTED
 HV7405* NAVD 88 ORTHO HEIGHT -    68.5   (meters)      225.    (feet) VERTCON3
 HV7405  ______________________________________________________________________
 HV7405  GEOID HEIGHT    -        -32.989 (meters)                     GEOID18
 HV7405  LAPLACE CORR    -         -6.20  (seconds)                    DEFLEC18
 HV7405  HORZ ORDER      -  SECOND
 HV7405
 HV7405.The horizontal coordinates were established by classical geodetic methods
 HV7405.and adjusted by the National Geodetic Survey in November 1994.
 HV7405
 HV7405.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7405.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7405
 HV7405.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7405.GEOID18 height accuracy estimate available here.
 HV7405
 HV7405.Click photographs - Photos may exist for this station.
 HV7405
 HV7405.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7405
 HV7405. The following values were computed from the NAD 83(1993) position.
 HV7405
 HV7405;                    North         East     Units Scale Factor Converg.
 HV7405;SPC MD       -   117,062.801   417,473.347   MT  0.99995348   +0 07 34.0
 HV7405;SPC MD       -   384,063.54  1,369,660.47   sFT  0.99995348   +0 07 34.0
 HV7405;UTM  18      - 4,287,361.050   343,600.145   MT  0.99990122   -1 07 32.2
 HV7405
 HV7405!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7405!SPC MD       -   0.99999443  x   0.99995348  =   0.99994791
 HV7405!UTM  18      -   0.99999443  x   0.99990122  =   0.99989565
 HV7405
 HV7405:                Primary Azimuth Mark                     Grid Az
 HV7405:SPC MD       -  17473 WSSC 1970                          241 27 23.5
 HV7405:UTM  18      -  17473 WSSC 1970                          242 42 29.7
 HV7405
 HV7405_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4360087361(NAD 83)
 HV7405
 HV7405|---------------------------------------------------------------------|
 HV7405| PID    Reference Object                     Distance      Geod. Az  |
 HV7405|                                                           dddmmss.s |
 HV7405| HV7408 17473 WSSC 1970                     APPROX. 0.5 KM 2413457.5 |
 HV7405| HV7407 17522 WSSC 1970                     220.356 METERS 24649     |
 HV7405|---------------------------------------------------------------------|
 HV7405
 HV7405                          SUPERSEDED SURVEY CONTROL
 HV7405
 HV7405  NAD 83(1991)-  38 43 15.87297(N)    076 47 56.64396(W) AD(       ) 2
 HV7405  NAD 83(1986)-  38 43 15.87040(N)    076 47 56.65850(W) AD(       ) 2
 HV7405  NAD 27      -  38 43 15.45582(N)    076 47 57.76777(W) AD(       ) 2
 HV7405  NGVD 29 (07/19/86)   68.7    (m)          225.     (f) VERT ANG       
 HV7405
 HV7405.Superseded values are not recommended for survey control.
 HV7405
 HV7405.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7405.See file dsdata.pdf to determine how the superseded data were derived.
 HV7405
 HV7405_MARKER: I = METAL ROD
 HV7405_SETTING: 0 = UNSPECIFIED SETTING
 HV7405_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7405
 HV7405  HISTORY     - Date     Condition        Report By
 HV7405  HISTORY     - 1969     MONUMENTED       WSSC
 HV7405
 HV7405                          STATION DESCRIPTION
 HV7405
 HV7405'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7405'THE STATION IS LOCATED ABOUT .10 MILE NORTH OF CROSS ROAD
 HV7405'AND 1.7 MILES EAST OF THE PENNSYLVANIA RAILROAD.
 HV7405'
 HV7405'TO REACH THE STATION FROM CROSS ROAD, GO LEFT FOR 1400
 HV7405'FEET ON A GRAVEL ROAD NORTHEAST TO THE BOND RESIDENCE.  THE
 HV7405'GRAVEL ROAD IS 400 FEET NORTHEAST OF A PEPCO RIGHT OF WAY.  THE
 HV7405'STATION IS ON THE RIGHT SIDE OF THE GRAVEL ROAD.
 HV7405'
 HV7405'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7405'CENTER AND IS .4 FEET BELOW THE SURFACE.  IT IS 95.05 FEET
 HV7405'SOUTH OF POLE NO. 55, 72.01 FEET WEST OF THE SOUTHWEST
 HV7405'CORNER OF A HOUSE, 19.45 FEET WEST OF AN 8-INCH MIMOSA,
 HV7405'25.33 FEET EAST OF A 14-INCH LOCUST, AND 92.10 FEET NORTHWEST
 HV7405'OF THE NORTHWEST CORNER OF A POOL AND PATIO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7408 ***********************************************************************
 HV7408  DESIGNATION -  17473 WSSC 1970
 HV7408  PID         -  HV7408
 HV7408  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7408  COUNTRY     -  US
 HV7408  USGS QUAD   -  BRANDYWINE (2016)
 HV7408
 HV7408                         *CURRENT SURVEY CONTROL
 HV7408  ______________________________________________________________________
 HV7408* NAD 83(1993) POSITION- 38 43 07.56058(N) 076 48 16.25188(W)   ADJUSTED
 HV7408* NAVD 88 ORTHO HEIGHT -    69.2   (meters)      227.    (feet) VERTCON3
 HV7408  ______________________________________________________________________
 HV7408  GEOID HEIGHT    -        -32.978 (meters)                     GEOID18
 HV7408  LAPLACE CORR    -         -6.20  (seconds)                    DEFLEC18
 HV7408  HORZ ORDER      -  SECOND
 HV7408
 HV7408.The horizontal coordinates were established by classical geodetic methods
 HV7408.and adjusted by the National Geodetic Survey in November 1994.
 HV7408
 HV7408.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7408.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7408
 HV7408.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7408.GEOID18 height accuracy estimate available here.
 HV7408
 HV7408.Click photographs - Photos may exist for this station.
 HV7408
 HV7408.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7408
 HV7408. The following values were computed from the NAD 83(1993) position.
 HV7408
 HV7408;                    North         East     Units Scale Factor Converg.
 HV7408;SPC MD       -   116,805.462   417,000.243   MT  0.99995358   +0 07 21.7
 HV7408;SPC MD       -   383,219.25  1,368,108.30   sFT  0.99995358   +0 07 21.7
 HV7408;UTM  18      - 4,287,114.119   343,121.557   MT  0.99990307   -1 07 44.2
 HV7408
 HV7408!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7408!SPC MD       -   0.99999432  x   0.99995358  =   0.99994790
 HV7408!UTM  18      -   0.99999432  x   0.99990307  =   0.99989739
 HV7408
 HV7408:                Primary Azimuth Mark                     Grid Az
 HV7408:SPC MD       -  17472 WSSC 1970                          061 27 23.6
 HV7408:UTM  18      -  17472 WSSC 1970                          062 42 29.5
 HV7408
 HV7408_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4312187114(NAD 83)
 HV7408
 HV7408|---------------------------------------------------------------------|
 HV7408| PID    Reference Object                     Distance      Geod. Az  |
 HV7408|                                                           dddmmss.s |
 HV7408| HV7405 17472 WSSC 1970                     APPROX. 0.5 KM 0613445.3 |
 HV7408|---------------------------------------------------------------------|
 HV7408
 HV7408                          SUPERSEDED SURVEY CONTROL
 HV7408
 HV7408  NAD 83(1991)-  38 43 07.56055(N)    076 48 16.25213(W) AD(       ) 2
 HV7408  NAD 83(1986)-  38 43 07.55802(N)    076 48 16.26670(W) AD(       ) 2
 HV7408  NAD 27      -  38 43 07.14344(N)    076 48 17.37543(W) AD(       ) 2
 HV7408  NGVD 29 (07/19/86)   69.4    (m)          228.     (f) VERT ANG       
 HV7408
 HV7408.Superseded values are not recommended for survey control.
 HV7408
 HV7408.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7408.See file dsdata.pdf to determine how the superseded data were derived.
 HV7408
 HV7408_MARKER: I = METAL ROD
 HV7408_SETTING: 0 = UNSPECIFIED SETTING
 HV7408_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7408
 HV7408  HISTORY     - Date     Condition        Report By
 HV7408  HISTORY     - 1969     MONUMENTED       WSSC
 HV7408
 HV7408                          STATION DESCRIPTION
 HV7408
 HV7408'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7408'THE STATION IS LOCATED 100 FEET SOUTH OF CROSS ROAD AND ABOUT
 HV7408'1.50 MILES EAST OF THE PENNSYLVANIA RAILROAD.
 HV7408'
 HV7408'TO REACH THE STATION FROM THE INTERSECTION OF CROSS ROAD AND
 HV7408'ROUTE 301, GO SOUTHEAST FOR 1.9 MILES TO A PEPCO RIGHT OF
 HV7408'WAY.  TURN RIGHT AND GO .1 MILE TO THE FIRST SET OF PEPCO TOWERS
 HV7408'SOUTH OF CROSS ROAD.  TOWER NO. 759-E IS ON THE EAST SIDE OF THE
 HV7408'PEPCO RIGHT OF WAY.
 HV7408'
 HV7408'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7408'CENTER AND IS .3 FEET BELOW THE SURFACE.  REFERENCE POINTS ARE
 HV7408'ANGLE IRONS AT CONCRETE TOWER BASE.  THE STATION IS 17.79
 HV7408'FEET EAST OF THE NEAR LEG OF TOWER NO. 759-W, 45.71 FEET
 HV7408'NORTHEAST OF LEG OF TOWER NO. 759-W, 43.55 FEET NORTH OF LEG
 HV7408'OF TOWER NO. 759-W, 54.97 FEET WEST OF LEG OF TOWER NO. 759-E,
 HV7408'78.19 FEET NORTHWEST OF LEG OF TOWER NO. 759-E, AND 80.43 FEET
 HV7408'WEST OF LEG OF TOWER NO. 759-E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7406 ***********************************************************************
 HV7406  DESIGNATION -  17474 WSSC 1970
 HV7406  PID         -  HV7406
 HV7406  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7406  COUNTRY     -  US
 HV7406  USGS QUAD   -  BRANDYWINE (2016)
 HV7406
 HV7406                         *CURRENT SURVEY CONTROL
 HV7406  ______________________________________________________________________
 HV7406* NAD 83(1993) POSITION- 38 43 58.75728(N) 076 47 57.82456(W)   ADJUSTED
 HV7406* NAVD 88 ORTHO HEIGHT -    73.7   (meters)      242.    (feet) VERTCON3
 HV7406  ______________________________________________________________________
 HV7406  GEOID HEIGHT    -        -32.957 (meters)                     GEOID18
 HV7406  LAPLACE CORR    -         -6.18  (seconds)                    DEFLEC18
 HV7406  HORZ ORDER      -  SECOND
 HV7406
 HV7406.The horizontal coordinates were established by classical geodetic methods
 HV7406.and adjusted by the National Geodetic Survey in November 1994.
 HV7406
 HV7406.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7406.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7406
 HV7406.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7406.GEOID18 height accuracy estimate available here.
 HV7406
 HV7406.Click photographs - Photos may exist for this station.
 HV7406
 HV7406.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7406
 HV7406. The following values were computed from the NAD 83(1993) position.
 HV7406
 HV7406;                    North         East     Units Scale Factor Converg.
 HV7406;SPC MD       -   118,385.061   417,441.917   MT  0.99995294   +0 07 33.3
 HV7406;SPC MD       -   388,401.65  1,369,557.36   sFT  0.99995294   +0 07 33.3
 HV7406;UTM  18      - 4,288,683.612   343,597.610   MT  0.99990123   -1 07 33.9
 HV7406
 HV7406!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7406!SPC MD       -   0.99999361  x   0.99995294  =   0.99994655
 HV7406!UTM  18      -   0.99999361  x   0.99990123  =   0.99989484
 HV7406
 HV7406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4359788683(NAD 83)
 HV7406
 HV7406                          SUPERSEDED SURVEY CONTROL
 HV7406
 HV7406  NAD 83(1991)-  38 43 58.75723(N)    076 47 57.82476(W) AD(       ) 2
 HV7406  NAD 83(1986)-  38 43 58.75466(N)    076 47 57.83916(W) AD(       ) 2
 HV7406  NAD 27      -  38 43 58.34078(N)    076 47 58.94792(W) AD(       ) 2
 HV7406  NGVD 29 (07/19/86)   73.9    (m)          242.     (f) VERT ANG       
 HV7406
 HV7406.Superseded values are not recommended for survey control.
 HV7406
 HV7406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7406.See file dsdata.pdf to determine how the superseded data were derived.
 HV7406
 HV7406_MARKER: I = METAL ROD
 HV7406_SETTING: 0 = UNSPECIFIED SETTING
 HV7406_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7406
 HV7406  HISTORY     - Date     Condition        Report By
 HV7406  HISTORY     - 1969     MONUMENTED       WSSC
 HV7406
 HV7406                          STATION DESCRIPTION
 HV7406
 HV7406'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7406'THE STATION IS LOCATED ON THE SOUTH SIDE OF VAN BRADY ROAD,
 HV7406'.70 MILES SOUTHEAST OF OLD INDIAN HEAD ROAD.
 HV7406'
 HV7406'TO REACH THE STATION FROM OLD INDIAN HEAD ROAD, GO .70
 HV7406'MILES SOUTHEAST ON VAN BRADY ROAD TO A POWER LINE AND THE
 HV7406'STATION IS ON THE RIGHT.
 HV7406'
 HV7406'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7406'CENTER AND IS .3 FEET BELOW THE SURFACE.  REFERENCES ARE X CUTS
 HV7406'IN THE TOWER LEGS OF TOWER NO. 753-E.  IT IS 9.17 FEET
 HV7406'NORTHEAST OF THE WEST LEG, 29.36 FEET WEST OF THE EAST LEG,
 HV7406'46.11 FEET NORTHWEST OF THE SOUTHWEST LEG AND 18.65 FEET
 HV7406'SOUTH OF PEPCO POLE NO. 836612.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7234 ***********************************************************************
 HV7234  DESIGNATION -  17475 WSSC 1970
 HV7234  PID         -  HV7234
 HV7234  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7234  COUNTRY     -  US
 HV7234  USGS QUAD   -  BRISTOL (2016)
 HV7234
 HV7234                         *CURRENT SURVEY CONTROL
 HV7234  ______________________________________________________________________
 HV7234* NAD 83(1993) POSITION- 38 46 33.53565(N) 076 44 13.15187(W)   ADJUSTED
 HV7234* NAVD 88 ORTHO HEIGHT -    49.0   (meters)      161.    (feet) VERTCON3
 HV7234  ______________________________________________________________________
 HV7234  GEOID HEIGHT    -        -33.050 (meters)                     GEOID18
 HV7234  LAPLACE CORR    -         -5.96  (seconds)                    DEFLEC18
 HV7234  HORZ ORDER      -  SECOND
 HV7234
 HV7234.The horizontal coordinates were established by classical geodetic methods
 HV7234.and adjusted by the National Geodetic Survey in November 1994.
 HV7234
 HV7234.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7234.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7234
 HV7234.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7234.GEOID18 height accuracy estimate available here.
 HV7234
 HV7234.Click photographs - Photos may exist for this station.
 HV7234
 HV7234.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7234
 HV7234. The following values were computed from the NAD 83(1993) position.
 HV7234
 HV7234;                    North         East     Units Scale Factor Converg.
 HV7234;SPC MD       -   123,171.389   422,854.428   MT  0.99995136   +0 09 54.3
 HV7234;SPC MD       -   404,104.80  1,387,314.90   sFT  0.99995136   +0 09 54.3
 HV7234;UTM  18      - 4,293,350.194   349,113.117   MT  0.99988036   -1 05 16.9
 HV7234
 HV7234!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7234!SPC MD       -   0.99999751  x   0.99995136  =   0.99994887
 HV7234!UTM  18      -   0.99999751  x   0.99988036  =   0.99987787
 HV7234
 HV7234_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4911393350(NAD 83)
 HV7234
 HV7234                          SUPERSEDED SURVEY CONTROL
 HV7234
 HV7234  NAD 83(1991)-  38 46 33.53542(N)    076 44 13.15194(W) AD(       ) 2
 HV7234  NAD 83(1986)-  38 46 33.53241(N)    076 44 13.16582(W) AD(       ) 2
 HV7234  NAD 27      -  38 46 33.11968(N)    076 44 14.28002(W) AD(       ) 2
 HV7234  NGVD 29 (07/19/86)   49.2    (m)          161.     (f) VERT ANG       
 HV7234
 HV7234.Superseded values are not recommended for survey control.
 HV7234
 HV7234.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7234.See file dsdata.pdf to determine how the superseded data were derived.
 HV7234
 HV7234_MARKER: I = METAL ROD
 HV7234_SETTING: 0 = UNSPECIFIED SETTING
 HV7234_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7234
 HV7234  HISTORY     - Date     Condition        Report By
 HV7234  HISTORY     - 1969     MONUMENTED       WSSC
 HV7234
 HV7234                          STATION DESCRIPTION
 HV7234
 HV7234'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7234'THE STATION IS LOCATED ON THE NORTH SIDE OF MT. CALVERT ROAD,
 HV7234'ABOUT 1.2 MILES WEST OF THE PATUXENT RIVER AND ABOUT .80 MILES
 HV7234'SOUTHWEST OF CHEWS LAKE.
 HV7234'
 HV7234'TO REACH THE STATION FROM THE INTERSECTION OF MT. CALVERT ROAD AND
 HV7234'DUVALL ROAD, GO WEST ON MT. CALVERT ROAD FOR 400 FEET TO THE
 HV7234'STATION ON THE RIGHT AT THE APARTMENT COMPLEX.
 HV7234'
 HV7234'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7234'AND IS SET FLUSH WITH THE SURFACE.  IT IS 16.53 FEET SOUTHEAST OF
 HV7234'A FIRE HYDRANT, 34.42 FEET EAST OF THE CORNER OF APARTMENT NO. 1,
 HV7234'41.64 FEET EAST OF POLE NO. 541, AND 59.83 FEET WEST OF A POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7449 ***********************************************************************
 HV7449  DESIGNATION -  17476 WSSC 1970
 HV7449  PID         -  HV7449
 HV7449  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7449  COUNTRY     -  US
 HV7449  USGS QUAD   -  PISCATAWAY (2016)
 HV7449
 HV7449                         *CURRENT SURVEY CONTROL
 HV7449  ______________________________________________________________________
 HV7449* NAD 83(1993) POSITION- 38 40 11.74608(N) 076 58 23.27586(W)   ADJUSTED
 HV7449* NAVD 88 ORTHO HEIGHT -    64.7   (meters)      212.    (feet) VERTCON3
 HV7449  ______________________________________________________________________
 HV7449  GEOID HEIGHT    -        -32.624 (meters)                     GEOID18
 HV7449  LAPLACE CORR    -         -4.24  (seconds)                    DEFLEC18
 HV7449  HORZ ORDER      -  SECOND
 HV7449
 HV7449.The horizontal coordinates were established by classical geodetic methods
 HV7449.and adjusted by the National Geodetic Survey in November 1994.
 HV7449
 HV7449.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7449.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7449
 HV7449.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7449.GEOID18 height accuracy estimate available here.
 HV7449
 HV7449.Click photographs - Photos may exist for this station.
 HV7449
 HV7449.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7449
 HV7449. The following values were computed from the NAD 83(1993) position.
 HV7449
 HV7449;                    North         East     Units Scale Factor Converg.
 HV7449;SPC MD       -   111,366.430   402,338.135   MT  0.99995627   +0 01 00.7
 HV7449;SPC MD       -   365,374.70  1,320,004.36   sFT  0.99995627   +0 01 00.7
 HV7449;UTM  18      - 4,281,996.570   328,344.539   MT  0.99996286   -1 13 59.4
 HV7449
 HV7449!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7449!SPC MD       -   0.99999497  x   0.99995627  =   0.99995124
 HV7449!UTM  18      -   0.99999497  x   0.99996286  =   0.99995783
 HV7449
 HV7449:                Primary Azimuth Mark                     Grid Az
 HV7449:SPC MD       -  BEALLE RM 5                              267 13 17.7
 HV7449:UTM  18      -  BEALLE RM 5                              268 28 17.8
 HV7449
 HV7449_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2834481996(NAD 83)
 HV7449
 HV7449|---------------------------------------------------------------------|
 HV7449| PID    Reference Object                     Distance      Geod. Az  |
 HV7449|                                                           dddmmss.s |
 HV7449| HV7448 17357 WSSC 1970                     423.727 METERS 0144651.2 |
 HV7449| HV7435 BEALLE RM 5                         APPROX. 1.8 KM 2671418.4 |
 HV7449|---------------------------------------------------------------------|
 HV7449
 HV7449                          SUPERSEDED SURVEY CONTROL
 HV7449
 HV7449  NAD 83(1991)-  38 40 11.74459(N)    076 58 23.27680(W) AD(       ) 2
 HV7449  NAD 83(1986)-  38 40 11.74461(N)    076 58 23.29065(W) AD(       ) 2
 HV7449  NAD 27      -  38 40 11.32767(N)    076 58 24.38302(W) AD(       ) 2
 HV7449  NGVD 29 (07/19/86)   64.9    (m)          213.     (f) VERT ANG       
 HV7449
 HV7449.Superseded values are not recommended for survey control.
 HV7449
 HV7449.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7449.See file dsdata.pdf to determine how the superseded data were derived.
 HV7449
 HV7449_MARKER: I = METAL ROD
 HV7449_SETTING: 0 = UNSPECIFIED SETTING
 HV7449_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7449
 HV7449  HISTORY     - Date     Condition        Report By
 HV7449  HISTORY     - 1969     MONUMENTED       WSSC
 HV7449
 HV7449                          STATION DESCRIPTION
 HV7449
 HV7449'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7449'THE STATION IS LOCATED ABOUT 1.10 MILES EAST OF ACCOKEEK ACRES
 HV7449'ON THE EAST SIDE OF MIDDLETON ROAD, .25 MILES SOUTH OF ROUTE
 HV7449'373 (TB-ACCOKEEK ROAD).
 HV7449'
 HV7449'TO REACH THE STATION FROM ROUTE 373, GO SOUTH ON MIDDLETON
 HV7449'ROAD FOR .25 MILES TO THE STATION ON THE LEFT.
 HV7449'
 HV7449'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7449'AND IS .2 FEET BELOW THE SURFACE.  IT IS 9.0 FEET EAST OF THE
 HV7449'EAST SIDE OF MIDDLETON ROAD, 59.90 FEET SOUTHEAST OF A 10-INCH
 HV7449'CEDAR TREE, 30.72 FEET EAST OF A TACK IN THE TOP OF A FENCE POST,
 HV7449'AND 10.45 FEET WEST OF THE NORTHWEST CORNER OF A BARN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5905 ***********************************************************************
 JV5905  DESIGNATION -  17478
 JV5905  PID         -  JV5905
 JV5905  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5905  COUNTRY     -  US
 JV5905  USGS QUAD   -  LAUREL (2016)
 JV5905
 JV5905                         *CURRENT SURVEY CONTROL
 JV5905  ______________________________________________________________________
 JV5905* NAD 83(1991) POSITION- 39 03 15.68912(N) 076 51 00.32743(W)   ADJUSTED
 JV5905* NAVD 88 ORTHO HEIGHT -    63.3   (meters)      208.    (feet) VERTCON3
 JV5905  ______________________________________________________________________
 JV5905  GEOID HEIGHT    -        -32.283 (meters)                     GEOID18
 JV5905  LAPLACE CORR    -         -5.25  (seconds)                    DEFLEC18
 JV5905  HORZ ORDER      -  SECOND
 JV5905
 JV5905.The horizontal coordinates were established by classical geodetic methods
 JV5905.and adjusted by the National Geodetic Survey in January 1992.
 JV5905
 JV5905.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5905.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5905
 JV5905.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5905.GEOID18 height accuracy estimate available here.
 JV5905
 JV5905.Click photographs - Photos may exist for this station.
 JV5905
 JV5905.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5905
 JV5905. The following values were computed from the NAD 83(1991) position.
 JV5905
 JV5905;                    North         East     Units Scale Factor Converg.
 JV5905;SPC MD       -   154,051.198   412,975.546   MT  0.99995469   +0 05 38.7
 JV5905;SPC MD       -   505,416.31  1,354,903.94   sFT  0.99995469   +0 05 38.7
 JV5905;UTM  18      - 4,324,437.547   339,914.235   MT  0.99991557   -1 09 57.3
 JV5905
 JV5905!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5905!SPC MD       -   0.99999514  x   0.99995469  =   0.99994983
 JV5905!UTM  18      -   0.99999514  x   0.99991557  =   0.99991071
 JV5905
 JV5905_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3991424437(NAD 83)
 JV5905
 JV5905                          SUPERSEDED SURVEY CONTROL
 JV5905
 JV5905  NAD 83(1986)-  39 03 15.68753(N)    076 51 00.33790(W) AD(       ) 2
 JV5905  NAD 27      -  39 03 15.29433(N)    076 51 01.43916(W) AD(       ) 2
 JV5905  NGVD 29 (07/19/86)   63.5    (m)          208.     (f) VERT ANG       
 JV5905
 JV5905.Superseded values are not recommended for survey control.
 JV5905
 JV5905.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5905.See file dsdata.pdf to determine how the superseded data were derived.
 JV5905
 JV5905_MARKER: B = BOLT
 JV5905_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV5905_SP_SET: HEADWALL
 JV5905_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5905+STABILITY: SURFACE MOTION
 JV5905_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5905+SATELLITE: SATELLITE OBSERVATIONS - March 05, 2010
 JV5905
 JV5905  HISTORY     - Date     Condition        Report By
 JV5905  HISTORY     - 1969     MONUMENTED       WSSC
 JV5905  HISTORY     - 20100305 GOOD             NGS
 JV5905
 JV5905                          STATION DESCRIPTION
 JV5905
 JV5905'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5905'THE STATION IS LOCATED ON THE NORTH SIDE OF MUIRKIRK ROAD AT
 JV5905'THE MONTPELIER SUBSTATION (BALTIMORE GAS AND ELECTRIC), 700 FEET
 JV5905'NORTHWEST OF THE BALTIMORE-WASHINGTON PARKWAY.
 JV5905'
 JV5905'TO REACH THE STATION FROM THE INTERSECTION OF ODELL ROAD, GO
 JV5905'EAST ON MUIRKIRK ROAD FOR .20 MILES TO THE STATION ON THE LEFT.
 JV5905'
 JV5905'THE STATION MARK IS A BRASS BOLT IN A CONCRETE HEADWALL AT THE
 JV5905'WEST ENTRANCE TO THE SUBSTATION.
 JV5905
 JV5905                          STATION RECOVERY (2010)
 JV5905
 JV5905'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (D)
 JV5905'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5976 ***********************************************************************
 JV5976  DESIGNATION -  17479 WSSC 1969
 JV5976  PID         -  JV5976
 JV5976  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5976  COUNTRY     -  US
 JV5976  USGS QUAD   -  BELTSVILLE (2016)
 JV5976
 JV5976                         *CURRENT SURVEY CONTROL
 JV5976  ______________________________________________________________________
 JV5976* NAD 83(1991) POSITION- 39 05 08.86985(N) 076 54 01.00153(W)   ADJUSTED
 JV5976* NAVD 88 ORTHO HEIGHT -   109.6   (meters)      360.    (feet) VERTCON3
 JV5976  ______________________________________________________________________
 JV5976  GEOID HEIGHT    -        -32.142 (meters)                     GEOID18
 JV5976  LAPLACE CORR    -         -4.05  (seconds)                    DEFLEC18
 JV5976  HORZ ORDER      -  SECOND
 JV5976
 JV5976.The horizontal coordinates were established by classical geodetic methods
 JV5976.and adjusted by the National Geodetic Survey in January 1992.
 JV5976
 JV5976.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5976.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5976
 JV5976.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5976.GEOID18 height accuracy estimate available here.
 JV5976
 JV5976.Click photographs - Photos may exist for this station.
 JV5976
 JV5976.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5976
 JV5976. The following values were computed from the NAD 83(1991) position.
 JV5976
 JV5976;                    North         East     Units Scale Factor Converg.
 JV5976;SPC MD       -   157,535.370   408,627.722   MT  0.99995654   +0 03 45.3
 JV5976;SPC MD       -   516,847.29  1,340,639.45   sFT  0.99995654   +0 03 45.3
 JV5976;UTM  18      - 4,328,016.404   335,644.241   MT  0.99993262   -1 11 54.1
 JV5976
 JV5976!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5976!SPC MD       -   0.99998785  x   0.99995654  =   0.99994439
 JV5976!UTM  18      -   0.99998785  x   0.99993262  =   0.99992047
 JV5976
 JV5976:                Primary Azimuth Mark                     Grid Az
 JV5976:SPC MD       -  CASTLE                                   270 15 10.3
 JV5976:UTM  18      -  CASTLE                                   271 30 49.7
 JV5976
 JV5976_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3564428016(NAD 83)
 JV5976
 JV5976|---------------------------------------------------------------------|
 JV5976| PID    Reference Object                     Distance      Geod. Az  |
 JV5976|                                                           dddmmss.s |
 JV5976| JV5868 BELTSVILLE DA RSCH CTR S TANK       APPROX. 8.4 KM 1555824.4 |
 JV5976| JV5957 CASTLE                              APPROX. 3.6 KM 2701855.6 |
 JV5976| JV5967 LAUREL MINNICKS RAD MAST            APPROX. 1.5 KM 2993237.5 |
 JV5976|---------------------------------------------------------------------|
 JV5976
 JV5976                          SUPERSEDED SURVEY CONTROL
 JV5976
 JV5976  NAD 83(1986)-  39 05 08.86876(N)    076 54 01.01166(W) AD(       ) 2
 JV5976  NAD 27      -  39 05 08.47749(N)    076 54 02.10788(W) AD(       ) 2
 JV5976  NGVD 29 (07/19/86)  109.8    (m)          360.     (f) VERT ANG       
 JV5976
 JV5976.Superseded values are not recommended for survey control.
 JV5976
 JV5976.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5976.See file dsdata.pdf to determine how the superseded data were derived.
 JV5976
 JV5976_MARKER: I = METAL ROD
 JV5976_SETTING: 0 = UNSPECIFIED SETTING
 JV5976_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5976
 JV5976  HISTORY     - Date     Condition        Report By
 JV5976  HISTORY     - 1969     MONUMENTED       WSSC
 JV5976
 JV5976                          STATION DESCRIPTION
 JV5976
 JV5976'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5976'THE STATION IS ABOUT 3 MILES NORTH OF BELTSVILLE AND 2-1/2 MILES
 JV5976'SOUTHEAST OF BURTONSVILLE.
 JV5976'
 JV5976'TO REACH THE STATION FROM THE INTERSECTION OF GUNPOWDER ROAD
 JV5976'AND VAN DUSEN ROAD, GO EAST ON VAN DUSEN ROAD FOR 1.15 MILES
 JV5976'TO THE PEPCO POWER LINE.  TURN LEFT ON THE DIRT SERVICE ROAD
 JV5976'AND GO NORTH FOR .2 MILES TO THE FIRST SET OF TOWERS AND THE
 JV5976'STATION ON THE RIGHT.
 JV5976'
 JV5976'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5976'AND IS 2 INCHES DEEP.  IT IS 38.07 FEET NORTHEAST OF AN X CUT
 JV5976'IN THE NORTHWEST LEG, 26.66 FEET NORTHWEST OF AN X CUT IN THE
 JV5976'NORTHEAST LEG OF TOWER 206N AND IS ABOUT 1 FOOT SOUTH OF A
 JV5976'GREEN AND WHITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5969 ***********************************************************************
 JV5969  DESIGNATION -  17480 WSSC 1969
 JV5969  PID         -  JV5969
 JV5969  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5969  COUNTRY     -  US
 JV5969  USGS QUAD   -  BELTSVILLE (2016)
 JV5969
 JV5969                         *CURRENT SURVEY CONTROL
 JV5969  ______________________________________________________________________
 JV5969* NAD 83(1991) POSITION- 39 04 21.94488(N) 076 53 10.97165(W)   ADJUSTED
 JV5969* NAVD 88 ORTHO HEIGHT -    76.1   (meters)      250.    (feet) VERTCON3
 JV5969  ______________________________________________________________________
 JV5969  GEOID HEIGHT    -        -32.181 (meters)                     GEOID18
 JV5969  LAPLACE CORR    -         -4.12  (seconds)                    DEFLEC18
 JV5969  HORZ ORDER      -  SECOND
 JV5969
 JV5969.The horizontal coordinates were established by classical geodetic methods
 JV5969.and adjusted by the National Geodetic Survey in January 1992.
 JV5969
 JV5969.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5969.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5969
 JV5969.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5969.GEOID18 height accuracy estimate available here.
 JV5969
 JV5969.Click photographs - Photos may exist for this station.
 JV5969
 JV5969.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5969
 JV5969. The following values were computed from the NAD 83(1991) position.
 JV5969
 JV5969;                    North         East     Units Scale Factor Converg.
 JV5969;SPC MD       -   156,089.764   409,831.878   MT  0.99995574   +0 04 16.7
 JV5969;SPC MD       -   512,104.50  1,344,590.09   sFT  0.99995574   +0 04 16.7
 JV5969;UTM  18      - 4,326,544.693   336,816.268   MT  0.99992790   -1 11 21.3
 JV5969
 JV5969!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5969!SPC MD       -   0.99999311  x   0.99995574  =   0.99994885
 JV5969!UTM  18      -   0.99999311  x   0.99992790  =   0.99992101
 JV5969
 JV5969_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3681626544(NAD 83)
 JV5969
 JV5969                          SUPERSEDED SURVEY CONTROL
 JV5969
 JV5969  NAD 83(1986)-  39 04 21.94369(N)    076 53 10.98188(W) AD(       ) 2
 JV5969  NAD 27      -  39 04 21.55182(N)    076 53 12.07951(W) AD(       ) 2
 JV5969  NGVD 29 (07/19/86)   76.3    (m)          250.     (f) VERT ANG       
 JV5969
 JV5969.Superseded values are not recommended for survey control.
 JV5969
 JV5969.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5969.See file dsdata.pdf to determine how the superseded data were derived.
 JV5969
 JV5969_MARKER: I = METAL ROD
 JV5969_SETTING: 0 = UNSPECIFIED SETTING
 JV5969_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5969
 JV5969  HISTORY     - Date     Condition        Report By
 JV5969  HISTORY     - 1969     MONUMENTED       WSSC
 JV5969
 JV5969                          STATION DESCRIPTION
 JV5969
 JV5969'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5969'THE STATION IS ABOUT 1 MILE NORTH OF MUIRKIRK AND 4 MILES
 JV5969'SOUTHEAST OF BURTONSVILLE.
 JV5969'
 JV5969'TO REACH THE STATION FROM THE INTERSECTION OF MUIRKIRK ROAD
 JV5969'AND VIRGINIA MANOR ROAD, GO NORTHEAST ON VIRGINIA MANOR ROAD FOR
 JV5969'.65 MILES TO THE PEPCO POWER LINE AND THE STATION IS ON THE RIGHT.
 JV5969'
 JV5969'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 JV5969'AND IS 2 INCHES BELOW THE SURFACE.  IT IS ABOUT 100 FEET EAST OF
 JV5969'VIRGINIA MANOR ROAD AND NORTH OF THE FIRST SET OF TOWERS, 29.96
 JV5969'FEET NORTHEAST OF AN X CUT IN THE NORTHWEST LEG AND 32.94 FEET
 JV5969'NORTHWEST OF AN X CUT IN THE NORTHEAST LEG OF TOWER 212N.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7533 ***********************************************************************
 HV7533  DESIGNATION -  17481 WSSC 1970
 HV7533  PID         -  HV7533
 HV7533  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7533  COUNTRY     -  US
 HV7533  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7533
 HV7533                         *CURRENT SURVEY CONTROL
 HV7533  ______________________________________________________________________
 HV7533* NAD 83(1993) POSITION- 38 50 33.50219(N) 076 48 35.93492(W)   ADJUSTED
 HV7533* NAVD 88 ORTHO HEIGHT -    42.1   (meters)      138.    (feet) VERTCON3
 HV7533  ______________________________________________________________________
 HV7533  GEOID HEIGHT    -        -32.679 (meters)                     GEOID18
 HV7533  LAPLACE CORR    -         -6.10  (seconds)                    DEFLEC18
 HV7533  HORZ ORDER      -  SECOND
 HV7533
 HV7533.The horizontal coordinates were established by classical geodetic methods
 HV7533.and adjusted by the National Geodetic Survey in November 1994.
 HV7533
 HV7533.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7533.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7533
 HV7533.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7533.GEOID18 height accuracy estimate available here.
 HV7533
 HV7533.Click photographs - Photos may exist for this station.
 HV7533
 HV7533.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7533
 HV7533. The following values were computed from the NAD 83(1993) position.
 HV7533
 HV7533;                    North         East     Units Scale Factor Converg.
 HV7533;SPC MD       -   130,555.026   416,496.144   MT  0.99995001   +0 07 09.3
 HV7533;SPC MD       -   428,329.28  1,366,454.43   sFT  0.99995001   +0 07 09.3
 HV7533;UTM  18      - 4,300,870.760   342,918.292   MT  0.99990385   -1 08 07.5
 HV7533
 HV7533!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7533!SPC MD       -   0.99999852  x   0.99995001  =   0.99994853
 HV7533!UTM  18      -   0.99999852  x   0.99990385  =   0.99990237
 HV7533
 HV7533:                Primary Azimuth Mark                     Grid Az
 HV7533:SPC MD       -  BROCK                                    081 20 40.2
 HV7533:UTM  18      -  BROCK                                    082 35 57.0
 HV7533
 HV7533_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4291800870(NAD 83)
 HV7533
 HV7533|---------------------------------------------------------------------|
 HV7533| PID    Reference Object                     Distance      Geod. Az  |
 HV7533|                                                           dddmmss.s |
 HV7533| HV7515 BROCK                               APPROX. 3.8 KM 0812749.5 |
 HV7533| HV7532 17482 WSSC 1970                     333.065 METERS 14931     |
 HV7533|---------------------------------------------------------------------|
 HV7533
 HV7533                          SUPERSEDED SURVEY CONTROL
 HV7533
 HV7533  NAD 83(1991)-  38 50 33.50190(N)    076 48 35.93492(W) AD(       ) 2
 HV7533  NAD 83(1986)-  38 50 33.49958(N)    076 48 35.94773(W) AD(       ) 2
 HV7533  NAD 27      -  38 50 33.09336(N)    076 48 37.05368(W) AD(       ) 2
 HV7533  NGVD 29 (07/19/86)   42.4    (m)          139.     (f) VERT ANG       
 HV7533
 HV7533.Superseded values are not recommended for survey control.
 HV7533
 HV7533.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7533.See file dsdata.pdf to determine how the superseded data were derived.
 HV7533
 HV7533_MARKER: I = METAL ROD
 HV7533_SETTING: 0 = UNSPECIFIED SETTING
 HV7533_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7533
 HV7533  HISTORY     - Date     Condition        Report By
 HV7533  HISTORY     - 1969     MONUMENTED       WSSC
 HV7533
 HV7533                          STATION DESCRIPTION
 HV7533
 HV7533'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7533'THE STATION IS LOCATED ABOUT 3.0 MILES NORTHWEST OF UPPER
 HV7533'MARLBORO ON THE EAST SIDE OF RITCHIE-MARLBORO ROAD, .3 MILES
 HV7533'SOUTHEAST OF WESTPHALIA ROAD.
 HV7533'
 HV7533'TO REACH THE STATION FROM ROUTE 408 (MARLBORO PIKE), GO
 HV7533'NORTHWEST ON RITCHIE-MARLBORO ROAD FOR 2.1 MILES TO THE STATION
 HV7533'ON THE RIGHT.
 HV7533'
 HV7533'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7533'AND IS 7 INCHES BELOW THE SURFACE.  IT IS 3.5 FEET EAST OF THE
 HV7533'EAST EDGE OF RITCHIE MARLBORO ROAD, 53.35 FEET SOUTHEAST OF POLE
 HV7533'NO. P-55, 51.53 FEET NORTHEAST OF A 24-INCH OAK WITH A NAIL IN
 HV7533'THE LEFT SIDE, 41.84 FEET SOUTH OF PEPCO POLE NO. 834234, 66.63
 HV7533'FEET NORTHWEST OF A POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7532 ***********************************************************************
 HV7532  DESIGNATION -  17482 WSSC 1970
 HV7532  PID         -  HV7532
 HV7532  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7532  COUNTRY     -  US
 HV7532  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7532
 HV7532                         *CURRENT SURVEY CONTROL
 HV7532  ______________________________________________________________________
 HV7532* NAD 83(1993) POSITION- 38 50 24.19461(N) 076 48 28.92809(W)   ADJUSTED
 HV7532* NAVD 88 ORTHO HEIGHT -    28.0   (meters)       92.    (feet) VERTCON3
 HV7532  ______________________________________________________________________
 HV7532  GEOID HEIGHT    -        -32.690 (meters)                     GEOID18
 HV7532  LAPLACE CORR    -         -6.12  (seconds)                    DEFLEC18
 HV7532  HORZ ORDER      -  SECOND
 HV7532
 HV7532.The horizontal coordinates were established by classical geodetic methods
 HV7532.and adjusted by the National Geodetic Survey in November 1994.
 HV7532
 HV7532.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7532.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7532
 HV7532.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7532.GEOID18 height accuracy estimate available here.
 HV7532
 HV7532.Click photographs - Photos may exist for this station.
 HV7532
 HV7532.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7532
 HV7532. The following values were computed from the NAD 83(1993) position.
 HV7532
 HV7532;                    North         East     Units Scale Factor Converg.
 HV7532;SPC MD       -   130,268.378   416,665.717   MT  0.99995004   +0 07 13.7
 HV7532;SPC MD       -   427,388.84  1,367,010.77   sFT  0.99995004   +0 07 13.7
 HV7532;UTM  18      - 4,300,580.481   343,081.540   MT  0.99990322   -1 08 02.9
 HV7532
 HV7532!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7532!SPC MD       -   1.00000073  x   0.99995004  =   0.99995077
 HV7532!UTM  18      -   1.00000073  x   0.99990322  =   0.99990395
 HV7532
 HV7532_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4308100580(NAD 83)
 HV7532
 HV7532                          SUPERSEDED SURVEY CONTROL
 HV7532
 HV7532  NAD 83(1991)-  38 50 24.19433(N)    076 48 28.92808(W) AD(       ) 2
 HV7532  NAD 83(1986)-  38 50 24.19199(N)    076 48 28.94093(W) AD(       ) 2
 HV7532  NAD 27      -  38 50 23.78562(N)    076 48 30.04708(W) AD(       ) 2
 HV7532  NGVD 29 (07/19/86)   28.3    (m)           93.     (f) VERT ANG       
 HV7532
 HV7532.Superseded values are not recommended for survey control.
 HV7532
 HV7532.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7532.See file dsdata.pdf to determine how the superseded data were derived.
 HV7532
 HV7532_MARKER: I = METAL ROD
 HV7532_SETTING: 0 = UNSPECIFIED SETTING
 HV7532_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7532
 HV7532  HISTORY     - Date     Condition        Report By
 HV7532  HISTORY     - 1969     MONUMENTED       WSSC
 HV7532
 HV7532                          STATION DESCRIPTION
 HV7532
 HV7532'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7532'THE STATION IS LOCATED ABOUT 2.8 MILES NORTHWEST OF UPPER
 HV7532'MARLBORO ON EAST SIDE OF RITCHIE-MARLBORO ROAD, ON THE NORTH
 HV7532'SIDE OF CABIN BRANCH.
 HV7532'
 HV7532'TO REACH THE STATION FROM ROUTE 408 (MARLBORO PIKE), GO
 HV7532'NORTHWEST ON RITCHIE-MARLBORO ROAD FOR 1.9 MILES TO THE STATION
 HV7532'ON THE RIGHT.
 HV7532'
 HV7532'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7532'AND IS SET FLUSH WITH THE SURFACE.  IT IS 5.5 FEET EAST OF THE
 HV7532'EAST EDGE OF RITCHIE-MARLBORO ROAD, 63.31 FEET SOUTHWEST OF
 HV7532'PEPCO POLE NO. 824028, 30.88 FEET EAST OF AN X CUT ON THE NORTH
 HV7532'END OF A CONCRETE HEADWALL ON THE WEST SIDE OF THE ROAD, 38.14
 HV7532'FEET NORTHEAST FROM AN X CUT IN THE CENTERLINE OF THE SAME
 HV7532'HEADWALL AND 3.68 FEET NORTH FROM AN X CUT ON THE NORTH END OF
 HV7532'THE HEADWALL ON THE EAST SIDE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7478 ***********************************************************************
 HV7478  DESIGNATION -  17484 WSSC 1970
 HV7478  PID         -  HV7478
 HV7478  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7478  COUNTRY     -  US
 HV7478  USGS QUAD   -  LANHAM (2016)
 HV7478
 HV7478                         *CURRENT SURVEY CONTROL
 HV7478  ______________________________________________________________________
 HV7478* NAD 83(1991) POSITION- 38 58 08.19377(N) 076 46 10.08182(W)   ADJUSTED
 HV7478* NAVD 88 ORTHO HEIGHT -    54.6   (meters)      179.    (feet) VERTCON3
 HV7478  ______________________________________________________________________
 HV7478  GEOID HEIGHT    -        -32.604 (meters)                     GEOID18
 HV7478  LAPLACE CORR    -         -5.56  (seconds)                    DEFLEC18
 HV7478  HORZ ORDER      -  SECOND
 HV7478
 HV7478.The horizontal coordinates were established by classical geodetic methods
 HV7478.and adjusted by the National Geodetic Survey in January 1992.
 HV7478
 HV7478.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7478.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7478
 HV7478.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7478.GEOID18 height accuracy estimate available here.
 HV7478
 HV7478.Click photographs - Photos may exist for this station.
 HV7478
 HV7478.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7478
 HV7478. The following values were computed from the NAD 83(1991) position.
 HV7478
 HV7478;                    North         East     Units Scale Factor Converg.
 HV7478;SPC MD       -   144,583.770   419,977.960   MT  0.99995116   +0 08 40.9
 HV7478;SPC MD       -   474,355.25  1,377,877.69   sFT  0.99995116   +0 08 40.9
 HV7478;UTM  18      - 4,314,819.051   346,706.625   MT  0.99988936   -1 06 46.9
 HV7478
 HV7478!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7478!SPC MD       -   0.99999655  x   0.99995116  =   0.99994771
 HV7478!UTM  18      -   0.99999655  x   0.99988936  =   0.99988591
 HV7478
 HV7478:                Primary Azimuth Mark                     Grid Az
 HV7478:SPC MD       -  HILLMEADE                                285 10 51.0
 HV7478:UTM  18      -  HILLMEADE                                286 26 18.8
 HV7478
 HV7478_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4670614819(NAD 83)
 HV7478
 HV7478|---------------------------------------------------------------------|
 HV7478| PID    Reference Object                     Distance      Geod. Az  |
 HV7478|                                                           dddmmss.s |
 HV7478| HV7477 17391 WSSC 1970                     302.204 METERS 04456     |
 HV7478| HV7463 HILLMEADE                           APPROX. 1.5 KM 2851931.9 |
 HV7478|---------------------------------------------------------------------|
 HV7478
 HV7478                          SUPERSEDED SURVEY CONTROL
 HV7478
 HV7478  NAD 83(1986)-  38 58 08.19149(N)    076 46 10.09321(W) AD(       ) 2
 HV7478  NAD 27      -  38 58 07.79313(N)    076 46 11.20380(W) AD(       ) 2
 HV7478  NGVD 29 (07/19/86)   54.8    (m)          180.     (f) VERT ANG       
 HV7478
 HV7478.Superseded values are not recommended for survey control.
 HV7478
 HV7478.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7478.See file dsdata.pdf to determine how the superseded data were derived.
 HV7478
 HV7478_MARKER: I = METAL ROD
 HV7478_SETTING: 0 = UNSPECIFIED SETTING
 HV7478_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7478
 HV7478  HISTORY     - Date     Condition        Report By
 HV7478  HISTORY     - 1969     MONUMENTED       WSSC
 HV7478  HISTORY     - 19960911 MARK NOT FOUND   USPSQD
 HV7478
 HV7478                          STATION DESCRIPTION
 HV7478
 HV7478'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7478'THE STATION IS LOCATED WEST OF BELAIR, 800 FEET SOUTH OF ROUTE
 HV7478'450 AND 1200 FEET WEST OF CHURCH ROAD IN A PEPCO RIGHT OF WAY.
 HV7478'
 HV7478'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7478'AND IS SET FLUSH WITH THE SURFACE.  IT IS IN THE CENTER OF TOWER
 HV7478'NO. 284-E, 29.65 FEET SOUTHEAST OF THE NORTHWEST LEG, 25.41
 HV7478'FEET SOUTHWEST OF THE NORTHEAST LEG, 20.56 FEET NORTHEAST OF
 HV7478'THE SOUTHWEST LEG, AND 12,81 FEET NORTHWEST OF THE SOUTHEAST
 HV7478'LEG.  REFERENCES ARE X CUTS IN THE BASE OF THE LEGS.
 HV7478
 HV7478                          STATION RECOVERY (1996)
 HV7478
 HV7478'RECOVERY NOTE BY US POWER SQUADRON 1996
 HV7478'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7494 ***********************************************************************
 HV7494  DESIGNATION -  17485 WSSC 1970
 HV7494  PID         -  HV7494
 HV7494  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7494  COUNTRY     -  US
 HV7494  USGS QUAD   -  LANHAM (2016)
 HV7494
 HV7494                         *CURRENT SURVEY CONTROL
 HV7494  ______________________________________________________________________
 HV7494* NAD 83(1991) POSITION- 38 59 26.87391(N) 076 51 09.65277(W)   ADJUSTED
 HV7494* NAVD 88 ORTHO HEIGHT -    55.6   (meters)      182.    (feet) VERTCON3
 HV7494  ______________________________________________________________________
 HV7494  GEOID HEIGHT    -        -32.340 (meters)                     GEOID18
 HV7494  LAPLACE CORR    -         -5.23  (seconds)                    DEFLEC18
 HV7494  HORZ ORDER      -  SECOND
 HV7494
 HV7494.The horizontal coordinates were established by classical geodetic methods
 HV7494.and adjusted by the National Geodetic Survey in January 1992.
 HV7494
 HV7494.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7494.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7494
 HV7494.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7494.GEOID18 height accuracy estimate available here.
 HV7494
 HV7494.Click photographs - Photos may exist for this station.
 HV7494
 HV7494.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7494
 HV7494. The following values were computed from the NAD 83(1991) position.
 HV7494
 HV7494;                    North         East     Units Scale Factor Converg.
 HV7494;SPC MD       -   146,995.026   412,762.720   MT  0.99995186   +0 05 32.9
 HV7494;SPC MD       -   482,266.18  1,354,205.69   sFT  0.99995186   +0 05 32.9
 HV7494;UTM  18      - 4,317,388.016   339,546.411   MT  0.99991702   -1 09 57.4
 HV7494
 HV7494!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7494!SPC MD       -   0.99999635  x   0.99995186  =   0.99994821
 HV7494!UTM  18      -   0.99999635  x   0.99991702  =   0.99991337
 HV7494
 HV7494:                Primary Azimuth Mark                     Grid Az
 HV7494:SPC MD       -  NASA RM 3                                030 23 24.7
 HV7494:UTM  18      -  NASA RM 3                                031 38 55.0
 HV7494
 HV7494_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3954617388(NAD 83)
 HV7494
 HV7494|---------------------------------------------------------------------|
 HV7494| PID    Reference Object                     Distance      Geod. Az  |
 HV7494|                                                           dddmmss.s |
 HV7494| HV7473 NASA RM 3                           APPROX. 1.0 KM 0302857.6 |
 HV7494| HV7492 16291 WSSC 1970                     343.947 METERS 09038     |
 HV7494|---------------------------------------------------------------------|
 HV7494
 HV7494                          SUPERSEDED SURVEY CONTROL
 HV7494
 HV7494  NAD 83(1986)-  38 59 26.87228(N)    076 51 09.66388(W) AD(       ) 2
 HV7494  NAD 27      -  38 59 26.47591(N)    076 51 10.76482(W) AD(       ) 2
 HV7494  NGVD 29 (07/19/86)   55.8    (m)          183.     (f) VERT ANG       
 HV7494
 HV7494.Superseded values are not recommended for survey control.
 HV7494
 HV7494.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7494.See file dsdata.pdf to determine how the superseded data were derived.
 HV7494
 HV7494_MARKER: B = BOLT
 HV7494_SETTING: 0 = UNSPECIFIED SETTING
 HV7494_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7494
 HV7494  HISTORY     - Date     Condition        Report By
 HV7494  HISTORY     - 1969     MONUMENTED       WSSC
 HV7494
 HV7494                          STATION DESCRIPTION
 HV7494
 HV7494'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7494'THE STATION IS LOCATED EAST OF GREENBELT AND NORTH OF SEABROOK
 HV7494'ACRES ON THE SOUTH SIDE OF ROUTE 193, 600 FEET EAST OF CIPRIANO
 HV7494'ROAD.
 HV7494'
 HV7494'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 193 AND
 HV7494'CIPRIANO ROAD, GO EAST ON ROUTE 193 FOR 600 FEET TO THE STATION
 HV7494'ON THE RIGHT, OPPOSITE THE MAIN GATE TO GODDARD SPACE FLIGHT
 HV7494'CENTER (NASA).
 HV7494'
 HV7494'THE STATION MARK IS A BRASS BOLT IN A CONCRETE SPILLWAY.  IT IS
 HV7494'3.40 FEET SOUTH OF THE EDGE OF THE ROAD, 19.17 FEET WEST OF POLE
 HV7494'NO. P-9070, 41.79 FEET EAST OF THE NORTH CORNER OF A CONCRETE
 HV7494'HEADWALL AND 41.74 FEET EAST OF THE SOUTH CORNER OF A CONCRETE
 HV7494'HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5992 ***********************************************************************
 JV5992  DESIGNATION -  17486
 JV5992  PID         -  JV5992
 JV5992  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5992  COUNTRY     -  US
 JV5992  USGS QUAD   -  BELTSVILLE (2016)
 JV5992
 JV5992                         *CURRENT SURVEY CONTROL
 JV5992  ______________________________________________________________________
 JV5992* NAD 83(2011) POSITION- 39 02 32.23518(N) 076 56 44.87970(W)   ADJUSTED
 JV5992* NAD 83(2011) ELLIP HT-    62.462 (meters)        (06/27/12)   ADJUSTED
 JV5992* NAD 83(2011) EPOCH   -  2010.00
 JV5992* NAVD 88 ORTHO HEIGHT -    94.9   (meters)      311.    (feet) VERTCON3
 JV5992  ______________________________________________________________________
 JV5992  GEOID HEIGHT    -        -32.077 (meters)                     GEOID18
 JV5992  NAD 83(2011) X  -  1,120,423.375 (meters)                     COMP
 JV5992  NAD 83(2011) Y  - -4,832,227.134 (meters)                     COMP
 JV5992  NAD 83(2011) Z  -  3,996,003.658 (meters)                     COMP
 JV5992  LAPLACE CORR    -         -3.58  (seconds)                    DEFLEC18
 JV5992
 JV5992  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV5992  Standards:
 JV5992         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV5992            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV5992  -------------------------------------------------------------------
 JV5992  NETWORK    1.75   2.88           0.46   0.85   1.47      0.05145996
 JV5992  -------------------------------------------------------------------
 JV5992  Click here for local accuracies and other accuracy information.
 JV5992
 JV5992.The horizontal coordinates were established by GPS observations
 JV5992.and adjusted by the National Geodetic Survey in June 2012.
 JV5992
 JV5992.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV5992.been affixed to the stable North American tectonic plate. See 
 JV5992.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV5992
 JV5992.The horizontal coordinates are valid at the epoch date displayed above
 JV5992.which is a decimal equivalence of Year/Month/Day.
 JV5992
 JV5992.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5992.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5992
 JV5992.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5992.GEOID18 height accuracy estimate available here.
 JV5992
 JV5992.Click photographs - Photos may exist for this station.
 JV5992
 JV5992.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV5992
 JV5992.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5992
 JV5992.The ellipsoidal height was determined by GPS observations
 JV5992.and is referenced to NAD 83.
 JV5992
 JV5992. The following values were computed from the NAD 83(2011) position.
 JV5992
 JV5992;                    North         East     Units Scale Factor Converg.
 JV5992;SPC MD       -   152,701.970   404,692.146   MT  0.99995406   +0 02 02.5
 JV5992;SPC MD       -   500,989.71  1,327,727.48   sFT  0.99995406   +0 02 02.5
 JV5992;UTM  18      - 4,323,270.815   331,603.354   MT  0.99994918   -1 13 33.4
 JV5992
 JV5992!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5992!SPC MD       -   0.99999020  x   0.99995406  =   0.99994426
 JV5992!UTM  18      -   0.99999020  x   0.99994918  =   0.99993938
 JV5992
 JV5992:                Primary Azimuth Mark                     Grid Az
 JV5992:SPC MD       -  COLLEGE PARK UNIV OF MD CHAPEL           175 57 05.1
 JV5992:UTM  18      -  COLLEGE PARK UNIV OF MD CHAPEL           177 12 41.0
 JV5992
 JV5992_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3160323270(NAD 83)
 JV5992
 JV5992|---------------------------------------------------------------------|
 JV5992| PID    Reference Object                     Distance      Geod. Az  |
 JV5992|                                                           dddmmss.s |
 JV5992| JV5868 BELTSVILLE DA RSCH CTR S TANK       APPROX. 7.9 KM 1105225.9 |
 JV5992| JV5990 17487 WSSC 1970                     216.218 METERS 11151     |
 JV5992| HV7745 COLLEGE PARK UNIV OF MD CHAPEL      APPROX. 6.5 KM 1755907.6 |
 JV5992|---------------------------------------------------------------------|
 JV5992
 JV5992                          SUPERSEDED SURVEY CONTROL
 JV5992
 JV5992  NAD 83(2007)-  39 02 32.23541(N)    076 56 44.88050(W) AD(2002.00) 0
 JV5992  ELLIP H (02/10/07)   62.491  (m)                       GP(2002.00)    
 JV5992  ELLIP H (08/30/02)   62.504  (m)                       GP(       ) 4 2
 JV5992  NAD 83(1991)-  39 02 32.23498(N)    076 56 44.88070(W) AD(       ) 2
 JV5992  ELLIP H (01/27/92)   62.428  (m)                       GP(       ) 4 1
 JV5992  NAD 83(1986)-  39 02 32.23340(N)    076 56 44.89134(W) AD(       ) 2
 JV5992  NAD 27      -  39 02 31.84028(N)    076 56 45.98170(W) AD(       ) 2
 JV5992  NGVD 29 (07/19/86)   95.1    (m)          312.     (f) VERT ANG       
 JV5992
 JV5992.Superseded values are not recommended for survey control.
 JV5992
 JV5992.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5992.See file dsdata.pdf to determine how the superseded data were derived.
 JV5992
 JV5992_MARKER: DZ = AZIMUTH MARK DISK
 JV5992_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5992_STAMPING: SEL WSSD 1957
 JV5992_MARK LOGO: CGS
 JV5992_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV5992_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5992+STABILITY: SURFACE MOTION
 JV5992_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5992+SATELLITE: SATELLITE OBSERVATIONS - November 01, 2007
 JV5992
 JV5992  HISTORY     - Date     Condition        Report By
 JV5992  HISTORY     - 1969     MONUMENTED       WSSC
 JV5992  HISTORY     - 1969     GOOD             WSSC
 JV5992  HISTORY     - 19890504 GOOD
 JV5992  HISTORY     - 19901105 GOOD             WSSC
 JV5992  HISTORY     - 20071101 GOOD             NGS
 JV5992
 JV5992                          STATION DESCRIPTION
 JV5992
 JV5992'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5992'THE STATION IS LOCATED .3 MILES NORTHEAST OF THE INTERSECTION OF
 JV5992'POWDER MILL ROAD AND EAST RANDOLPH ROAD, 2.2 MILES SOUTHWEST OF
 JV5992'BELTSVILLE.
 JV5992'
 JV5992'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 1 AND ROUTE
 JV5992'495 (CAPITAL BELTWAY), GO SOUTH ON ROUTE 1 TO CHERRY HILL ROAD.  GO
 JV5992'RIGHT ON CHERRY HILL ROAD FOR 2.0 MILES TO THE INTERSECTION OF
 JV5992'POWDER MILL ROAD AND CHERRY HILL ROAD.  GO RIGHT ON POWDER MILL
 JV5992'ROAD FOR .3 MILES TO THE STATION ON THE LEFT, AT AMERICAN LEGION
 JV5992'POST NO. 28.
 JV5992'
 JV5992'THE STATION MARK IS A CONCRETE MONUMENT WITH A BRONZE DISK
 JV5992'STAMPED SEL WSSD, 1957 AZ. MK. AND IS 6 INCHES ABOVE THE
 JV5992'SURFACE.  IT IS 20.00 FEET NORTHEAST OF POLE NO. 851901, 11.22 FEET
 JV5992'NORTHEAST OF THE CENTERLINE OF A WATER MANHOLE AND 71.57 FEET
 JV5992'WEST OF THE CENTERLINE OF A FIRE HYDRANT.
 JV5992
 JV5992                          STATION RECOVERY (1969)
 JV5992
 JV5992'RECOVERY NOTE BY WASH SUBURB SAN COMM 1969
 JV5992'RECOVERED IN GOOD CONDITION.
 JV5992
 JV5992                          STATION RECOVERY (1989)
 JV5992
 JV5992'RECOVERED 1989
 JV5992'RECOVERED IN GOOD CONDITION.
 JV5992
 JV5992                          STATION RECOVERY (1990)
 JV5992
 JV5992'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV5992'THE STATION IS LICATED ABOUT 1.8 KM (1.1 MI) SW OF CALVERTON, 3.4 KM
 JV5992'(2.1 MI) WEST OF BELTSVILLE AND 5.5 KM (3.4 MI) NW OF THE UNIVERSITY
 JV5992'OF MARYLAND. TO REACH THE STATION FROM THE BRIDGE WHERE TRE 212
 JV5992'(POWDER MILL RD) CROSSES INTERSTATE RTE I95, GO SE ON RTE 212 1.6 KM
 JV5992'(1.0 MI) TO THE STATION ON THE RIGHT. STATION IS 11.0 M (36.1 FT) NW
 JV5992'OF CENTERLINE RTE 212. OWNERSHIP--STATE ROAD RIGHT-OF-WAY. THE
 JV5992'STATION MARK IS A STANDARD NGS AZIMUTH MARK DISK STAMPED SEL WSSD
 JV5992'1957 SET IN THE TOP OF A SQUARE CONCRETE MONUMENT .25 M (0.82 FT)
 JV5992'WIDE AND IT IS PROJECTING .1 M (0.3 FT) ABOVE THE GRASS. NO REFERENCE
 JV5992'MARKS WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH
 JV5992'MARKS FOR THIS STATION AT THIS TIME.
 JV5992
 JV5992                          STATION RECOVERY (2007)
 JV5992
 JV5992'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2007 (DRD)
 JV5992'MARK IS A USCGS AZIMUTH MARK DISK.  THIS STATION IS THE AZIMUTH MARK
 JV5992'FOR JV5982 SEL 2
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5990 ***********************************************************************
 JV5990  DESIGNATION -  17487 WSSC 1970
 JV5990  PID         -  JV5990
 JV5990  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5990  COUNTRY     -  US
 JV5990  USGS QUAD   -  BELTSVILLE (2016)
 JV5990
 JV5990                         *CURRENT SURVEY CONTROL
 JV5990  ______________________________________________________________________
 JV5990* NAD 83(1991) POSITION- 39 02 29.62596(N) 076 56 36.53549(W)   ADJUSTED
 JV5990* NAVD 88 ORTHO HEIGHT -    90.4   (meters)      297.    (feet) VERTCON3
 JV5990  ______________________________________________________________________
 JV5990  GEOID HEIGHT    -        -32.082 (meters)                     GEOID18
 JV5990  LAPLACE CORR    -         -3.59  (seconds)                    DEFLEC18
 JV5990  HORZ ORDER      -  SECOND
 JV5990
 JV5990.The horizontal coordinates were established by classical geodetic methods
 JV5990.and adjusted by the National Geodetic Survey in January 1992.
 JV5990
 JV5990.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5990.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5990
 JV5990.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5990.GEOID18 height accuracy estimate available here.
 JV5990
 JV5990.Click photographs - Photos may exist for this station.
 JV5990
 JV5990.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5990
 JV5990. The following values were computed from the NAD 83(1991) position.
 JV5990
 JV5990;                    North         East     Units Scale Factor Converg.
 JV5990;SPC MD       -   152,621.633   404,892.853   MT  0.99995402   +0 02 07.7
 JV5990;SPC MD       -   500,726.14  1,328,385.97   sFT  0.99995402   +0 02 07.7
 JV5990;UTM  18      - 4,323,186.085   331,802.245   MT  0.99994836   -1 13 28.0
 JV5990
 JV5990!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5990!SPC MD       -   0.99999085  x   0.99995402  =   0.99994487
 JV5990!UTM  18      -   0.99999085  x   0.99994836  =   0.99993921
 JV5990
 JV5990_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3180223186(NAD 83)
 JV5990
 JV5990                          SUPERSEDED SURVEY CONTROL
 JV5990
 JV5990  NAD 83(1986)-  39 02 29.62437(N)    076 56 36.54614(W) AD(       ) 2
 JV5990  NAD 27      -  39 02 29.23122(N)    076 56 37.63675(W) AD(       ) 2
 JV5990  NGVD 29 (07/19/86)   90.6    (m)          297.     (f) VERT ANG       
 JV5990
 JV5990.Superseded values are not recommended for survey control.
 JV5990
 JV5990.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5990.See file dsdata.pdf to determine how the superseded data were derived.
 JV5990
 JV5990_MARKER: B = BOLT
 JV5990_SETTING: 0 = UNSPECIFIED SETTING
 JV5990_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5990
 JV5990  HISTORY     - Date     Condition        Report By
 JV5990  HISTORY     - 1969     MONUMENTED       WSSC
 JV5990
 JV5990                          STATION DESCRIPTION
 JV5990
 JV5990'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV5990'THE STATION IS LOCATED WEST OF BELTSVILLE AND SOUTH OF CALVERTON,
 JV5990'BEHIND HIGH POINT HIGH SCHOOL.
 JV5990'
 JV5990'TO REACH THE STATION, GO TO THE BACK PARKING LOT OF HIGH POINT
 JV5990'HIGH SCHOOL.
 JV5990'
 JV5990'THE STATION MARK IS A BRASS BOLT IN A CONCRETE CURB AT THE
 JV5990'SOUTHEAST EDGE OF THE LOT.  IT IS 35.00 FEET WEST OF THE CENTER
 JV5990'OF A WATER MANHOLE, 30.79 FEET WEST OF THE CORNER OF A CONCRETE
 JV5990'WALK, AND 71.54 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE
 JV5990'GYMNASIUM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7482 ***********************************************************************
 HV7482  DESIGNATION -  17488 WSSC 1970
 HV7482  PID         -  HV7482
 HV7482  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7482  COUNTRY     -  US
 HV7482  USGS QUAD   -  LANHAM (2016)
 HV7482
 HV7482                         *CURRENT SURVEY CONTROL
 HV7482  ______________________________________________________________________
 HV7482* NAD 83(1993) POSITION- 38 54 24.05093(N) 076 47 50.51400(W)   ADJUSTED
 HV7482* NAVD 88 ORTHO HEIGHT -    42.8   (meters)      140.    (feet) VERTCON3
 HV7482  ______________________________________________________________________
 HV7482  GEOID HEIGHT    -        -32.611 (meters)                     GEOID18
 HV7482  LAPLACE CORR    -         -5.56  (seconds)                    DEFLEC18
 HV7482  HORZ ORDER      -  SECOND
 HV7482
 HV7482.The horizontal coordinates were established by classical geodetic methods
 HV7482.and adjusted by the National Geodetic Survey in November 1994.
 HV7482
 HV7482.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7482.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7482
 HV7482.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7482.GEOID18 height accuracy estimate available here.
 HV7482
 HV7482.Click photographs - Photos may exist for this station.
 HV7482
 HV7482.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7482
 HV7482. The following values were computed from the NAD 83(1993) position.
 HV7482
 HV7482;                    North         East     Units Scale Factor Converg.
 HV7482;SPC MD       -   137,666.432   417,575.682   MT  0.99994999   +0 07 37.9
 HV7482;SPC MD       -   451,660.62  1,369,996.22   sFT  0.99994999   +0 07 37.9
 HV7482;UTM  18      - 4,307,956.463   344,153.325   MT  0.99989908   -1 07 44.6
 HV7482
 HV7482!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7482!SPC MD       -   0.99999839  x   0.99994999  =   0.99994838
 HV7482!UTM  18      -   0.99999839  x   0.99989908  =   0.99989747
 HV7482
 HV7482:                Primary Azimuth Mark                     Grid Az
 HV7482:SPC MD       -  BEANE                                    256 38 30.2
 HV7482:UTM  18      -  BEANE                                    257 53 52.7
 HV7482
 HV7482_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4415307956(NAD 83)
 HV7482
 HV7482|---------------------------------------------------------------------|
 HV7482| PID    Reference Object                     Distance      Geod. Az  |
 HV7482|                                                           dddmmss.s |
 HV7482| HV7470 BEANE                               APPROX. 3.0 KM 2564608.1 |
 HV7482| HV7483 17489 WSSC 1970                     263.131 METERS 34231     |
 HV7482|---------------------------------------------------------------------|
 HV7482
 HV7482                          SUPERSEDED SURVEY CONTROL
 HV7482
 HV7482  NAD 83(1991)-  38 54 24.05065(N)    076 47 50.51406(W) AD(       ) 2
 HV7482  NAD 83(1986)-  38 54 24.04848(N)    076 47 50.52595(W) AD(       ) 2
 HV7482  NAD 27      -  38 54 23.64783(N)    076 47 51.63237(W) AD(       ) 2
 HV7482  NGVD 29 (07/19/86)   43.1    (m)          141.     (f) VERT ANG       
 HV7482
 HV7482.Superseded values are not recommended for survey control.
 HV7482
 HV7482.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7482.See file dsdata.pdf to determine how the superseded data were derived.
 HV7482
 HV7482_MARKER: DD = SURVEY DISK
 HV7482_SETTING: 0 = UNSPECIFIED SETTING
 HV7482_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7482
 HV7482  HISTORY     - Date     Condition        Report By
 HV7482  HISTORY     - 1969     MONUMENTED       WSSC
 HV7482
 HV7482                          STATION DESCRIPTION
 HV7482
 HV7482'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7482'THE STATION IS LOCATED ON THE EAST SIDE OF ROUTE 556 (ENTERPRISE
 HV7482'ROAD), 3000 FEET NORTH OF KOLBES CORNER.
 HV7482'
 HV7482'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 214 (CENTRAL
 HV7482'AVENUE), GO NORTH ON ROUTE 556 FOR 3000 FEET TO THE STATION ON
 HV7482'THE RIGHT.
 HV7482'
 HV7482'THE STATION MARK IS A CONCRETE MONUMENT WITH A BRASS DISK
 HV7482'STAMPED LEE, 1964.  IT IS 38.68 FEET EAST OF A 4-INCH GUM, 18.50
 HV7482'FEET EAST OF THE CENTER OF THE ROAD AND 19.29 FEET SOUTH OF POLE
 HV7482'NO. 836191.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7483 ***********************************************************************
 HV7483  DESIGNATION -  17489 WSSC 1970
 HV7483  PID         -  HV7483
 HV7483  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7483  COUNTRY     -  US
 HV7483  USGS QUAD   -  LANHAM (2016)
 HV7483
 HV7483                         *CURRENT SURVEY CONTROL
 HV7483  ______________________________________________________________________
 HV7483* NAD 83(1993) POSITION- 38 54 32.18959(N) 076 47 53.79534(W)   ADJUSTED
 HV7483* NAVD 88 ORTHO HEIGHT -    43.1   (meters)      141.    (feet) VERTCON3
 HV7483  ______________________________________________________________________
 HV7483  GEOID HEIGHT    -        -32.605 (meters)                     GEOID18
 HV7483  LAPLACE CORR    -         -5.54  (seconds)                    DEFLEC18
 HV7483  HORZ ORDER      -  SECOND
 HV7483
 HV7483.The horizontal coordinates were established by classical geodetic methods
 HV7483.and adjusted by the National Geodetic Survey in November 1994.
 HV7483
 HV7483.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7483.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7483
 HV7483.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7483.GEOID18 height accuracy estimate available here.
 HV7483
 HV7483.Click photographs - Photos may exist for this station.
 HV7483
 HV7483.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7483
 HV7483. The following values were computed from the NAD 83(1993) position.
 HV7483
 HV7483;                    North         East     Units Scale Factor Converg.
 HV7483;SPC MD       -   137,917.217   417,496.070   MT  0.99995001   +0 07 35.8
 HV7483;SPC MD       -   452,483.40  1,369,735.02   sFT  0.99995001   +0 07 35.8
 HV7483;UTM  18      - 4,308,208.920   344,079.233   MT  0.99989937   -1 07 46.9
 HV7483
 HV7483!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7483!SPC MD       -   0.99999835  x   0.99995001  =   0.99994836
 HV7483!UTM  18      -   0.99999835  x   0.99989937  =   0.99989772
 HV7483
 HV7483_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4407908208(NAD 83)
 HV7483
 HV7483                          SUPERSEDED SURVEY CONTROL
 HV7483
 HV7483  NAD 83(1991)-  38 54 32.18931(N)    076 47 53.79541(W) AD(       ) 2
 HV7483  NAD 83(1986)-  38 54 32.18715(N)    076 47 53.80727(W) AD(       ) 2
 HV7483  NAD 27      -  38 54 31.78616(N)    076 47 54.91383(W) AD(       ) 2
 HV7483  NGVD 29 (07/19/86)   43.4    (m)          142.     (f) VERT ANG       
 HV7483
 HV7483.Superseded values are not recommended for survey control.
 HV7483
 HV7483.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7483.See file dsdata.pdf to determine how the superseded data were derived.
 HV7483
 HV7483_MARKER: I = METAL ROD
 HV7483_SETTING: 0 = UNSPECIFIED SETTING
 HV7483_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7483
 HV7483  HISTORY     - Date     Condition        Report By
 HV7483  HISTORY     - 1969     MONUMENTED       WSSC
 HV7483
 HV7483                          STATION DESCRIPTION
 HV7483
 HV7483'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7483'THE STATION IS LOCATED ON THE WEST SIDE OF ROUTE 556 (ENTERPRISE
 HV7483'ROAD), 3700 FEET NORTH OF KOLBES CORNER.
 HV7483'
 HV7483'THE REACH THE STATION FROM THE INTERSECTION OF ROUTE 214 (CENTRAL
 HV7483'AVENUE), GO NORTH ON ROUTE 556 FOR 3700 FEET TO THE STATION ON THE
 HV7483'LEFT.
 HV7483'
 HV7483'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7483'AND IS SET FLUSH WITH THE SURFACE.  IT IS 83.33 FEET SOUTH OF A
 HV7483'24-INCH CEDAR, 23.16 FEET SOUTHEAST OF A 30-INCH CEDAR, 65.94 FEET
 HV7483'NORTH OF A 15-INCH CEDAR AND 16.50 FEET WEST OF THE CENTER OF THE
 HV7483'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7370 ***********************************************************************
 HV7370  DESIGNATION -  17490 WSSC 1970
 HV7370  PID         -  HV7370
 HV7370  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7370  COUNTRY     -  US
 HV7370  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7370
 HV7370                         *CURRENT SURVEY CONTROL
 HV7370  ______________________________________________________________________
 HV7370* NAD 83(1993) POSITION- 38 43 45.69678(N) 076 42 03.29123(W)   ADJUSTED
 HV7370* NAVD 88 ORTHO HEIGHT -     7.2   (meters)       24.    (feet) VERTCON3
 HV7370  ______________________________________________________________________
 HV7370  GEOID HEIGHT    -        -33.253 (meters)                     GEOID18
 HV7370  LAPLACE CORR    -         -4.87  (seconds)                    DEFLEC18
 HV7370  HORZ ORDER      -  SECOND
 HV7370
 HV7370.The horizontal coordinates were established by classical geodetic methods
 HV7370.and adjusted by the National Geodetic Survey in November 1994.
 HV7370
 HV7370.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7370.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7370
 HV7370.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7370.GEOID18 height accuracy estimate available here.
 HV7370
 HV7370.Click photographs - Photos may exist for this station.
 HV7370
 HV7370.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7370
 HV7370. The following values were computed from the NAD 83(1993) position.
 HV7370
 HV7370;                    North         East     Units Scale Factor Converg.
 HV7370;SPC MD       -   118,005.780   426,005.869   MT  0.99995310   +0 11 15.8
 HV7370;SPC MD       -   387,157.30  1,397,654.26   sFT  0.99995310   +0 11 15.8
 HV7370;UTM  18      - 4,288,117.334   352,150.648   MT  0.99986919   -1 03 51.7
 HV7370
 HV7370!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7370!SPC MD       -   1.00000409  x   0.99995310  =   0.99995719
 HV7370!UTM  18      -   1.00000409  x   0.99986919  =   0.99987328
 HV7370
 HV7370:                Primary Azimuth Mark                     Grid Az
 HV7370:SPC MD       -  FENNO                                    289 54 38.4
 HV7370:UTM  18      -  FENNO                                    291 09 45.9
 HV7370
 HV7370_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5215088117(NAD 83)
 HV7370
 HV7370|---------------------------------------------------------------------|
 HV7370| PID    Reference Object                     Distance      Geod. Az  |
 HV7370|                                                           dddmmss.s |
 HV7370| HV7369 17492 WSSC 1970                     324.174 METERS 05301     |
 HV7370| HV7362 FENNO                               APPROX. 1.0 KM 2900554.2 |
 HV7370| HV7371 17491 WSSC 1970                     APPROX. 0.5 KM 3490845.0 |
 HV7370|---------------------------------------------------------------------|
 HV7370
 HV7370                          SUPERSEDED SURVEY CONTROL
 HV7370
 HV7370  NAD 83(1991)-  38 43 45.69633(N)    076 42 03.29126(W) AD(       ) 2
 HV7370  NAD 83(1986)-  38 43 45.69350(N)    076 42 03.30622(W) AD(       ) 2
 HV7370  NAD 27      -  38 43 45.27548(N)    076 42 04.42463(W) AD(       ) 2
 HV7370  NGVD 29 (07/19/86)    7.5    (m)           25.     (f) VERT ANG       
 HV7370
 HV7370.Superseded values are not recommended for survey control.
 HV7370
 HV7370.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7370.See file dsdata.pdf to determine how the superseded data were derived.
 HV7370
 HV7370_MARKER: I = METAL ROD
 HV7370_SETTING: 0 = UNSPECIFIED SETTING
 HV7370_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7370
 HV7370  HISTORY     - Date     Condition        Report By
 HV7370  HISTORY     - 1969     MONUMENTED       WSSC
 HV7370
 HV7370                          STATION DESCRIPTION
 HV7370
 HV7370'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7370'THE STATION IS LOCATED ABOUT .50 MILES WEST OF THE PATUXENT RIVER
 HV7370'AND ABOUT 1.1 MILES NORTH OF NOTTINGHAM.
 HV7370'
 HV7370'TO REACH THE STATION FROM THE INTERSECTION OF FENNO ROAD AND
 HV7370'NOTTINGHAM ROAD, GO NORTHWEST ON FENNO ROAD FOR .90 MILES TO A
 HV7370'DIRT ROAD (TO FENNO FARM).  TURN RIGHT ON TO THE DIRT ROAD AND GO
 HV7370'.35 MILES TO A DIRT ROAD (TO MARKLE FARM).  TURN RIGHT AND FOLLOW
 HV7370'THE ROAD BETWEEN THE TWO BARNS FOR 1.05 MILES TO A FORK IN THE
 HV7370'ROAD.  GO TO THE RIGHT AT THE FORK AND GO ALONG THE WIRE FENCE FOR
 HV7370'.10 MILES TO THE STATION ON THE ELFT.
 HV7370'
 HV7370'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7370'AND IS 4 INCHES ABOVE THE SURFACE.  IT IS 49.80 FEET EAST OF A
 HV7370'20-INCH CEDAR, 7.27 FEET SOUTHEAST OF A FENCE POST AND 3.75 FEET
 HV7370'WEST OF A FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7371 ***********************************************************************
 HV7371  DESIGNATION -  17491 WSSC 1970
 HV7371  PID         -  HV7371
 HV7371  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7371  COUNTRY     -  US
 HV7371  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7371
 HV7371                         *CURRENT SURVEY CONTROL
 HV7371  ______________________________________________________________________
 HV7371* NAD 83(1993) POSITION- 38 44 01.73376(N) 076 42 07.21705(W)   ADJUSTED
 HV7371* NAVD 88 ORTHO HEIGHT -     7.8   (meters)       26.    (feet) VERTCON3
 HV7371  ______________________________________________________________________
 HV7371  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 HV7371  LAPLACE CORR    -         -5.01  (seconds)                    DEFLEC18
 HV7371  HORZ ORDER      -  SECOND
 HV7371
 HV7371.The horizontal coordinates were established by classical geodetic methods
 HV7371.and adjusted by the National Geodetic Survey in November 1994.
 HV7371
 HV7371.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7371.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7371
 HV7371.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7371.GEOID18 height accuracy estimate available here.
 HV7371
 HV7371.Click photographs - Photos may exist for this station.
 HV7371
 HV7371.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7371
 HV7371. The following values were computed from the NAD 83(1993) position.
 HV7371
 HV7371;                    North         East     Units Scale Factor Converg.
 HV7371;SPC MD       -   118,499.964   425,909.434   MT  0.99995290   +0 11 13.3
 HV7371;SPC MD       -   388,778.63  1,397,337.87   sFT  0.99995290   +0 11 13.3
 HV7371;UTM  18      - 4,288,613.466   352,065.042   MT  0.99986950   -1 03 54.5
 HV7371
 HV7371!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7371!SPC MD       -   1.00000399  x   0.99995290  =   0.99995689
 HV7371!UTM  18      -   1.00000399  x   0.99986950  =   0.99987349
 HV7371
 HV7371_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5206588613(NAD 83)
 HV7371
 HV7371                          SUPERSEDED SURVEY CONTROL
 HV7371
 HV7371  NAD 83(1991)-  38 44 01.73331(N)    076 42 07.21705(W) AD(       ) 2
 HV7371  NAD 83(1986)-  38 44 01.73048(N)    076 42 07.23197(W) AD(       ) 2
 HV7371  NAD 27      -  38 44 01.31275(N)    076 42 08.35007(W) AD(       ) 2
 HV7371  NGVD 29 (07/19/86)    8.1    (m)           27.     (f) VERT ANG       
 HV7371
 HV7371.Superseded values are not recommended for survey control.
 HV7371
 HV7371.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7371.See file dsdata.pdf to determine how the superseded data were derived.
 HV7371
 HV7371_MARKER: I = METAL ROD
 HV7371_SETTING: 0 = UNSPECIFIED SETTING
 HV7371_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7371
 HV7371  HISTORY     - Date     Condition        Report By
 HV7371  HISTORY     - 1969     MONUMENTED       WSSC
 HV7371
 HV7371                          STATION DESCRIPTION
 HV7371
 HV7371'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7371'THE STATION IS LOCATED ABOUT .30 MILES WEST OF THE PATUXENT RIVER
 HV7371'AND 1.65 MILES NORTH OF NOTTINGHAM.
 HV7371'
 HV7371'TO REACH THE STATION FROM THE INTERSECTION OF FENNO ROAD AND
 HV7371'NOTTINGHAM ROAD, GO NORTHWEST ON FENNO ROAD FOR .90 MILES TO A
 HV7371'DIRT ROAD ON THE RIGHT. (TO FENNO FARM).  TURN RIGHT ON DIRT ROAD
 HV7371'AND CONTINUE FOR .35 MILES TO A DIRT ROAD ON THE RIGHT (TO MARKLE
 HV7371'FARM).  TURN RIGHT AND FOLLOW THE ROAD BETWEEN THE TWO BARNS FOR
 HV7371'1.05 MILES TO A FORK IN THE ROAD.  GO TO THE LEFT FOR .25 MILES TO
 HV7371'A ROAD INTERSECTION.  THEN GO .07 MILES NORTH TO THE STATION ON
 HV7371'THE RIGHT.
 HV7371'
 HV7371'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7371'AND IS SET FLUSH WITH THE SURFACE.  IT IS STAMPED FENNO AZIMUTH
 HV7371'MARK (1970).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7369 ***********************************************************************
 HV7369  DESIGNATION -  17492 WSSC 1970
 HV7369  PID         -  HV7369
 HV7369  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7369  COUNTRY     -  US
 HV7369  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7369
 HV7369                         *CURRENT SURVEY CONTROL
 HV7369  ______________________________________________________________________
 HV7369* NAD 83(1993) POSITION- 38 43 52.02027(N) 076 41 52.56948(W)   ADJUSTED
 HV7369* NAVD 88 ORTHO HEIGHT -     2.4   (meters)        8.    (feet) VERTCON3
 HV7369  ______________________________________________________________________
 HV7369  GEOID HEIGHT    -        -33.257 (meters)                     GEOID18
 HV7369  LAPLACE CORR    -         -4.80  (seconds)                    DEFLEC18
 HV7369  HORZ ORDER      -  SECOND
 HV7369
 HV7369.The horizontal coordinates were established by classical geodetic methods
 HV7369.and adjusted by the National Geodetic Survey in November 1994.
 HV7369
 HV7369.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7369.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7369
 HV7369.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7369.GEOID18 height accuracy estimate available here.
 HV7369
 HV7369.Click photographs - Photos may exist for this station.
 HV7369
 HV7369.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7369
 HV7369. The following values were computed from the NAD 83(1993) position.
 HV7369
 HV7369;                    North         East     Units Scale Factor Converg.
 HV7369;SPC MD       -   118,201.615   426,264.186   MT  0.99995302   +0 11 22.5
 HV7369;SPC MD       -   387,799.80  1,398,501.75   sFT  0.99995302   +0 11 22.5
 HV7369;UTM  18      - 4,288,307.462   352,413.161   MT  0.99986823   -1 03 45.1
 HV7369
 HV7369!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7369!SPC MD       -   1.00000484  x   0.99995302  =   0.99995786
 HV7369!UTM  18      -   1.00000484  x   0.99986823  =   0.99987307
 HV7369
 HV7369_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5241388307(NAD 83)
 HV7369
 HV7369                          SUPERSEDED SURVEY CONTROL
 HV7369
 HV7369  NAD 83(1991)-  38 43 52.01981(N)    076 41 52.56950(W) AD(       ) 2
 HV7369  NAD 83(1986)-  38 43 52.01696(N)    076 41 52.58444(W) AD(       ) 2
 HV7369  NAD 27      -  38 43 51.59897(N)    076 41 53.70311(W) AD(       ) 2
 HV7369  NGVD 29 (07/19/86)    2.7    (m)            9.     (f) VERT ANG       
 HV7369
 HV7369.Superseded values are not recommended for survey control.
 HV7369
 HV7369.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7369.See file dsdata.pdf to determine how the superseded data were derived.
 HV7369
 HV7369_MARKER: I = METAL ROD
 HV7369_SETTING: 0 = UNSPECIFIED SETTING
 HV7369_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7369
 HV7369  HISTORY     - Date     Condition        Report By
 HV7369  HISTORY     - 1969     MONUMENTED       WSSC
 HV7369
 HV7369                          STATION DESCRIPTION
 HV7369
 HV7369'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7369'THE STATION IS LOCATED ON THE WEST SIDE OF THE PATUXENT RIVER
 HV7369'ABOUT 1.4 MILES NORTH OF NOTTINGHAM.
 HV7369'
 HV7369'TO REACH THE STATION FROM THE INTERSECTION OF NOTTINGHAM ROAD, GO
 HV7369'NORTHWEST ON FENNO ROAD FOR .90 MILES TO A DIRT ROAD ON THE RIGHT
 HV7369'(TO FENNO FARM).  TURN RIGHT ON DIRT ROAD AND CONTINUE FOR .35
 HV7369'MILES TO A DIRT ROAD ON THE RIGHT (TO MARKLE FARM).  TURN RIGHT
 HV7369'AND FOLLOW THE ROAD BETWEEN THE TWO BARNS FOR 1.05 MILES TO A
 HV7369'FORK IN THE ROAD.  GO TO THE LEFT FOR .25 MILES TO A ROAD AND TURN
 HV7369'RIGHT.  GO .30 MILES TO THE STATION ON THE LEFT.
 HV7369'
 HV7369'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7369'AND IS 6 INCHES ABOVE THE SURFACE, STAMPED NOTT 1945.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7530 ***********************************************************************
 HV7530  DESIGNATION -  17493 WSSC 1970
 HV7530  PID         -  HV7530
 HV7530  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7530  COUNTRY     -  US
 HV7530  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7530
 HV7530                         *CURRENT SURVEY CONTROL
 HV7530  ______________________________________________________________________
 HV7530* NAD 83(1993) POSITION- 38 51 10.85378(N) 076 47 57.18434(W)   ADJUSTED
 HV7530* NAVD 88 ORTHO HEIGHT -    34.7   (meters)      114.    (feet) VERTCON3
 HV7530  ______________________________________________________________________
 HV7530  GEOID HEIGHT    -        -32.695 (meters)                     GEOID18
 HV7530  LAPLACE CORR    -         -6.10  (seconds)                    DEFLEC18
 HV7530  HORZ ORDER      -  SECOND
 HV7530
 HV7530.The horizontal coordinates were established by classical geodetic methods
 HV7530.and adjusted by the National Geodetic Survey in November 1994.
 HV7530
 HV7530.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7530.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7530
 HV7530.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7530.GEOID18 height accuracy estimate available here.
 HV7530
 HV7530.Click photographs - Photos may exist for this station.
 HV7530
 HV7530.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7530
 HV7530. The following values were computed from the NAD 83(1993) position.
 HV7530
 HV7530;                    North         East     Units Scale Factor Converg.
 HV7530;SPC MD       -   131,708.770   417,428.075   MT  0.99994993   +0 07 33.7
 HV7530;SPC MD       -   432,114.52  1,369,511.94   sFT  0.99994993   +0 07 33.7
 HV7530;UTM  18      - 4,302,003.765   343,875.220   MT  0.99990016   -1 07 44.1
 HV7530
 HV7530!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7530!SPC MD       -   0.99999968  x   0.99994993  =   0.99994961
 HV7530!UTM  18      -   0.99999968  x   0.99990016  =   0.99989984
 HV7530
 HV7530:                Primary Azimuth Mark                     Grid Az
 HV7530:SPC MD       -  BROCK                                    101 56 38.9
 HV7530:UTM  18      -  BROCK                                    103 11 56.7
 HV7530
 HV7530_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4387502003(NAD 83)
 HV7530
 HV7530|---------------------------------------------------------------------|
 HV7530| PID    Reference Object                     Distance      Geod. Az  |
 HV7530|                                                           dddmmss.s |
 HV7530| HV7515 BROCK                               APPROX. 2.8 KM 1020412.6 |
 HV7530| HV7529 17354 WSSC 1970                     392.673 METERS 16338     |
 HV7530|---------------------------------------------------------------------|
 HV7530
 HV7530                          SUPERSEDED SURVEY CONTROL
 HV7530
 HV7530  NAD 83(1991)-  38 51 10.85352(N)    076 47 57.18437(W) AD(       ) 2
 HV7530  NAD 83(1986)-  38 51 10.85107(N)    076 47 57.19699(W) AD(       ) 2
 HV7530  NAD 27      -  38 51 10.44544(N)    076 47 58.30417(W) AD(       ) 2
 HV7530  NGVD 29 (07/19/86)   35.0    (m)          115.     (f) VERT ANG       
 HV7530
 HV7530.Superseded values are not recommended for survey control.
 HV7530
 HV7530.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7530.See file dsdata.pdf to determine how the superseded data were derived.
 HV7530
 HV7530_MARKER: I = METAL ROD
 HV7530_SETTING: 0 = UNSPECIFIED SETTING
 HV7530_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7530
 HV7530  HISTORY     - Date     Condition        Report By
 HV7530  HISTORY     - 1969     MONUMENTED       WSSC
 HV7530
 HV7530                          STATION DESCRIPTION
 HV7530
 HV7530'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7530'THE STATION IS LOCATED ABOUT 2.9 MILES NORTHWEST OF UPPER
 HV7530'MARLBORO, NORTH OF BROWN STATION ROAD ABOUT .20 MILES.
 HV7530'
 HV7530'TO REACH THE STATION FROM ROUTE 408 (MARLBORO PIKE), GO NORTHWEST
 HV7530'ON BROWN STATION ROAD FOR 3.0 MILES TO A POWER LINE RIGHT OF
 HV7530'WAY.  TAKE GRAVEL ROAD ON RIGHT UNTIL YOU REACH TOWER
 HV7530'NO. 372-W.  THE STATION IS NEAR THE CENTERLINE OF THE TOWER.
 HV7530'
 HV7530'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7530'AND IS .4 FEET ABOVE THE SURFACE.  IT IS 18.62 FEET SOUTHEAST OF
 HV7530'THE NORTHWEST LEG OF THE TOWER, 15.03 FEET SOUTHWEST OF THE
 HV7530'NORTHEAST TOWER LEG, 26.80 FEET NORTHEAST OF THE SOUTHWEST TOWER
 HV7530'LEG, AND 24.40 FEET NORTHWEST OF THE SOUTHEAST TOWER LEG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7528 ***********************************************************************
 HV7528  DESIGNATION -  17494 WSSC 1970
 HV7528  PID         -  HV7528
 HV7528  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7528  COUNTRY     -  US
 HV7528  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7528
 HV7528                         *CURRENT SURVEY CONTROL
 HV7528  ______________________________________________________________________
 HV7528* NAD 83(1993) POSITION- 38 50 06.42227(N) 076 46 20.66904(W)   ADJUSTED
 HV7528* NAVD 88 ORTHO HEIGHT -    11.7   (meters)       38.    (feet) VERTCON3
 HV7528  ______________________________________________________________________
 HV7528  GEOID HEIGHT    -        -32.815 (meters)                     GEOID18
 HV7528  LAPLACE CORR    -         -6.09  (seconds)                    DEFLEC18
 HV7528  HORZ ORDER      -  SECOND
 HV7528
 HV7528.The horizontal coordinates were established by classical geodetic methods
 HV7528.and adjusted by the National Geodetic Survey in November 1994.
 HV7528
 HV7528.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7528.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7528
 HV7528.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7528.GEOID18 height accuracy estimate available here.
 HV7528
 HV7528.Click photographs - Photos may exist for this station.
 HV7528
 HV7528.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7528
 HV7528. The following values were computed from the NAD 83(1993) position.
 HV7528
 HV7528;                    North         East     Units Scale Factor Converg.
 HV7528;SPC MD       -   129,727.474   419,760.140   MT  0.99995010   +0 08 34.2
 HV7528;SPC MD       -   425,614.22  1,377,163.06   sFT  0.99995010   +0 08 34.2
 HV7528;UTM  18      - 4,299,971.988   346,163.216   MT  0.99989142   -1 06 42.0
 HV7528
 HV7528!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7528!SPC MD       -   1.00000332  x   0.99995010  =   0.99995342
 HV7528!UTM  18      -   1.00000332  x   0.99989142  =   0.99989474
 HV7528
 HV7528:                Primary Azimuth Mark                     Grid Az
 HV7528:SPC MD       -  BROCK                                    017 53 25.0
 HV7528:UTM  18      -  BROCK                                    019 08 41.2
 HV7528
 HV7528_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4616399971(NAD 83)
 HV7528
 HV7528|---------------------------------------------------------------------|
 HV7528| PID    Reference Object                     Distance      Geod. Az  |
 HV7528|                                                           dddmmss.s |
 HV7528| HV7515 BROCK                               APPROX. 1.5 KM 0180159.2 |
 HV7528| HV7527 17356 WSSC 1970                     170.568 METERS 15954     |
 HV7528|---------------------------------------------------------------------|
 HV7528
 HV7528                          SUPERSEDED SURVEY CONTROL
 HV7528
 HV7528  NAD 83(1991)-  38 50 06.42205(N)    076 46 20.66902(W) AD(       ) 2
 HV7528  NAD 83(1986)-  38 50 06.41933(N)    076 46 20.68197(W) AD(       ) 2
 HV7528  NAD 27      -  38 50 06.01257(N)    076 46 21.79217(W) AD(       ) 2
 HV7528  NGVD 29 (07/19/86)   11.9    (m)           39.     (f) VERT ANG       
 HV7528
 HV7528.Superseded values are not recommended for survey control.
 HV7528
 HV7528.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7528.See file dsdata.pdf to determine how the superseded data were derived.
 HV7528
 HV7528_MARKER: I = METAL ROD
 HV7528_SETTING: 0 = UNSPECIFIED SETTING
 HV7528_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7528
 HV7528  HISTORY     - Date     Condition        Report By
 HV7528  HISTORY     - 1969     MONUMENTED       WSSC
 HV7528
 HV7528                          STATION DESCRIPTION
 HV7528
 HV7528'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7528'THE STATION IS LOCATED ABOUT 1.4 MILES NORTHWEST OF UPPER MARLBORO
 HV7528'ON THE WEST SIDE OF BROWN STATION ROAD.
 HV7528'
 HV7528'TO REACH THE STATION FROM THE INTERSECTION OF BROOKE ROAD AND
 HV7528'BROWN STATION ROAD, GO SOUTH ON BROWN STATION ROAD FOR 150 FEET TO
 HV7528'THE STATION ON THE RIGHT.
 HV7528'
 HV7528'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7528'AND IS 3 INCHES ABOVE THE SURFACE.  IT IS 86.48 FEET WEST OF POLE
 HV7528'NO. 860585, 51.55 FEET SOUTH OF A CONCRETE MONUMENT, 67.73
 HV7528'FEET NORTH OF THE WEST CORNER OF A HEADWALL AND 67.81 FEET NORTH
 HV7528'OF THE EAST CORNER OF A HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7481 ***********************************************************************
 HV7481  DESIGNATION -  17495 WSSC 1970
 HV7481  PID         -  HV7481
 HV7481  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7481  COUNTRY     -  US
 HV7481  USGS QUAD   -  LANHAM (2016)
 HV7481
 HV7481                         *CURRENT SURVEY CONTROL
 HV7481  ______________________________________________________________________
 HV7481* NAD 83(1991) POSITION- 38 56 41.70896(N) 076 46 29.62262(W)   ADJUSTED
 HV7481* NAVD 88 ORTHO HEIGHT -    49.8   (meters)      163.    (feet) VERTCON3
 HV7481  ______________________________________________________________________
 HV7481  GEOID HEIGHT    -        -32.620 (meters)                     GEOID18
 HV7481  LAPLACE CORR    -         -5.54  (seconds)                    DEFLEC18
 HV7481  HORZ ORDER      -  SECOND
 HV7481
 HV7481.The horizontal coordinates were established by classical geodetic methods
 HV7481.and adjusted by the National Geodetic Survey in January 1992.
 HV7481
 HV7481.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7481.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7481
 HV7481.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7481.GEOID18 height accuracy estimate available here.
 HV7481
 HV7481.Click photographs - Photos may exist for this station.
 HV7481
 HV7481.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7481
 HV7481. The following values were computed from the NAD 83(1991) position.
 HV7481
 HV7481;                    North         East     Units Scale Factor Converg.
 HV7481;SPC MD       -   141,915.768   419,514.147   MT  0.99995057   +0 08 28.6
 HV7481;SPC MD       -   465,601.98  1,376,356.00   sFT  0.99995057   +0 08 28.6
 HV7481;UTM  18      - 4,312,162.030   346,184.407   MT  0.99989134   -1 06 57.1
 HV7481
 HV7481!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7481!SPC MD       -   0.99999731  x   0.99995057  =   0.99994788
 HV7481!UTM  18      -   0.99999731  x   0.99989134  =   0.99988865
 HV7481
 HV7481_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4618412162(NAD 83)
 HV7481
 HV7481                          SUPERSEDED SURVEY CONTROL
 HV7481
 HV7481  NAD 83(1986)-  38 56 41.70645(N)    076 46 29.63415(W) AD(       ) 2
 HV7481  NAD 27      -  38 56 41.30676(N)    076 46 30.74419(W) AD(       ) 2
 HV7481  NGVD 29 (07/19/86)   50.0    (m)          164.     (f) VERT ANG       
 HV7481
 HV7481.Superseded values are not recommended for survey control.
 HV7481
 HV7481.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7481.See file dsdata.pdf to determine how the superseded data were derived.
 HV7481
 HV7481_MARKER: B = BOLT
 HV7481_SETTING: 0 = UNSPECIFIED SETTING
 HV7481_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7481
 HV7481  HISTORY     - Date     Condition        Report By
 HV7481  HISTORY     - 1969     MONUMENTED       WSSC
 HV7481
 HV7481                          STATION DESCRIPTION
 HV7481
 HV7481'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7481'THE STATION IS LOCATED ON ROUTE 50, 1.3 MILES WEST OF THE
 HV7481'PENNSYLVANIA RAILROAD AND 1.25 MILES EAST OF ENTERPRISE ROAD.
 HV7481'
 HV7481'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 495 AND ROUTE
 HV7481'50, GO EAST ON ROUTE 50 FOR 4.2 MILES TO THE STATION IN A GRASS
 HV7481'MEDIAN, 200 FEET SOUTH OF PEPCO TOWER LINES.
 HV7481'
 HV7481'THE STATION MARK IS A BRASS BOLT AND WASHER STAMPED W.S.S.C. BM
 HV7481'3437 IN THE CENTERLINE OF ROUTE 50, 500 FEET EAST OF PEPCO TOWER
 HV7481'LINE IN THE CENTER LINE OF A CONCRETE CATCH BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7523 ***********************************************************************
 HV7523  DESIGNATION -  17496 WSSC 1970
 HV7523  PID         -  HV7523
 HV7523  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7523  COUNTRY     -  US
 HV7523  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7523
 HV7523                         *CURRENT SURVEY CONTROL
 HV7523  ______________________________________________________________________
 HV7523* NAD 83(1993) POSITION- 38 48 29.71096(N) 076 46 04.28077(W)   ADJUSTED
 HV7523* NAVD 88 ORTHO HEIGHT -    55.6   (meters)      182.    (feet) VERTCON3
 HV7523  ______________________________________________________________________
 HV7523  GEOID HEIGHT    -        -32.883 (meters)                     GEOID18
 HV7523  LAPLACE CORR    -         -6.28  (seconds)                    DEFLEC18
 HV7523  HORZ ORDER      -  SECOND
 HV7523
 HV7523.The horizontal coordinates were established by classical geodetic methods
 HV7523.and adjusted by the National Geodetic Survey in November 1994.
 HV7523
 HV7523.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7523.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7523
 HV7523.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7523.GEOID18 height accuracy estimate available here.
 HV7523
 HV7523.Click photographs - Photos may exist for this station.
 HV7523
 HV7523.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7523
 HV7523. The following values were computed from the NAD 83(1993) position.
 HV7523
 HV7523;                    North         East     Units Scale Factor Converg.
 HV7523;SPC MD       -   126,746.370   420,162.965   MT  0.99995054   +0 08 44.5
 HV7523;SPC MD       -   415,833.72  1,378,484.66   sFT  0.99995054   +0 08 44.5
 HV7523;UTM  18      - 4,296,982.959   346,500.675   MT  0.99989015   -1 06 29.4
 HV7523
 HV7523!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7523!SPC MD       -   0.99999644  x   0.99995054  =   0.99994698
 HV7523!UTM  18      -   0.99999644  x   0.99989015  =   0.99988659
 HV7523
 HV7523:                Primary Azimuth Mark                     Grid Az
 HV7523:SPC MD       -  CLAGETT                                  227 48 57.8
 HV7523:UTM  18      -  CLAGETT                                  229 04 11.7
 HV7523
 HV7523_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4650096982(NAD 83)
 HV7523
 HV7523|---------------------------------------------------------------------|
 HV7523| PID    Reference Object                     Distance      Geod. Az  |
 HV7523|                                                           dddmmss.s |
 HV7523| HV7522 17370 WSSC 1970                     170.325 METERS 12751     |
 HV7523| HV7514 CLAGETT                             APPROX. 1.4 KM 2275742.3 |
 HV7523|---------------------------------------------------------------------|
 HV7523
 HV7523                          SUPERSEDED SURVEY CONTROL
 HV7523
 HV7523  NAD 83(1991)-  38 48 29.71067(N)    076 46 04.28087(W) AD(       ) 2
 HV7523  NAD 83(1986)-  38 48 29.70799(N)    076 46 04.29423(W) AD(       ) 2
 HV7523  NAD 27      -  38 48 29.29807(N)    076 46 05.40560(W) AD(       ) 2
 HV7523  NGVD 29 (07/19/86)   55.8    (m)          183.     (f) VERT ANG       
 HV7523
 HV7523.Superseded values are not recommended for survey control.
 HV7523
 HV7523.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7523.See file dsdata.pdf to determine how the superseded data were derived.
 HV7523
 HV7523_MARKER: I = METAL ROD
 HV7523_SETTING: 0 = UNSPECIFIED SETTING
 HV7523_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7523
 HV7523  HISTORY     - Date     Condition        Report By
 HV7523  HISTORY     - 1969     MONUMENTED       WSSC
 HV7523
 HV7523                          STATION DESCRIPTION
 HV7523
 HV7523'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7523'THE STATION IS LOCATED SOUTHWEST OF UPPER MARLBORO ON THE SOUTHEAST
 HV7523'SIDE OF OLD CRAIN HIGHWAY.
 HV7523'
 HV7523'TO REACH THE STATION FROM THE INTERSECTION OF CROOM STATION ROAD
 HV7523'AND OLD CRAIN HIGHWAY, GO SOUTHWEST ON OLD CRAIN HIGHWAY FOR 100
 HV7523'FEET TO THE STATION ON THE LEFT.
 HV7523'
 HV7523'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER AND
 HV7523'IS .2 FEET ABOVE THE SURFACE.  IT IS 80.02 FEET EAST OF POLE
 HV7523'NO. P-30, 30.20 FEET EAST OF THE CENTER OF THE ROAD, 19.38 FEET
 HV7523'SOUTH OF A 4-INCH LOCUST, AND 35.62 FEET NORTHEAST OF POLE
 HV7523'NO. 812613.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7524 ***********************************************************************
 HV7524  DESIGNATION -  17497 WSSC 1970
 HV7524  PID         -  HV7524
 HV7524  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7524  COUNTRY     -  US
 HV7524  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7524
 HV7524                         *CURRENT SURVEY CONTROL
 HV7524  ______________________________________________________________________
 HV7524* NAD 83(1993) POSITION- 38 51 05.96674(N) 076 46 10.78847(W)   ADJUSTED
 HV7524* NAVD 88 ORTHO HEIGHT -    47.5   (meters)      156.    (feet) VERTCON3
 HV7524  ______________________________________________________________________
 HV7524  GEOID HEIGHT    -        -32.789 (meters)                     GEOID18
 HV7524  LAPLACE CORR    -         -5.89  (seconds)                    DEFLEC18
 HV7524  HORZ ORDER      -  SECOND
 HV7524
 HV7524.The horizontal coordinates were established by classical geodetic methods
 HV7524.and adjusted by the National Geodetic Survey in November 1994.
 HV7524
 HV7524.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7524.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7524
 HV7524.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7524.GEOID18 height accuracy estimate available here.
 HV7524
 HV7524.Click photographs - Photos may exist for this station.
 HV7524
 HV7524.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7524
 HV7524. The following values were computed from the NAD 83(1993) position.
 HV7524
 HV7524;                    North         East     Units Scale Factor Converg.
 HV7524;SPC MD       -   131,564.135   419,993.800   MT  0.99994994   +0 08 40.4
 HV7524;SPC MD       -   431,640.00  1,377,929.66   sFT  0.99994994   +0 08 40.4
 HV7524;UTM  18      - 4,301,802.984   346,437.022   MT  0.99989039   -1 06 37.2
 HV7524
 HV7524!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7524!SPC MD       -   0.99999768  x   0.99994994  =   0.99994762
 HV7524!UTM  18      -   0.99999768  x   0.99989039  =   0.99988807
 HV7524
 HV7524:                Primary Azimuth Mark                     Grid Az
 HV7524:SPC MD       -  BROCK                                    154 03 05.0
 HV7524:UTM  18      -  BROCK                                    155 18 22.6
 HV7524
 HV7524_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4643701802(NAD 83)
 HV7524
 HV7524|---------------------------------------------------------------------|
 HV7524| PID    Reference Object                     Distance      Geod. Az  |
 HV7524|                                                           dddmmss.s |
 HV7524| HV7515 BROCK                               493.578 METERS 1541145.4 |
 HV7524| HV7525 16364 WSSC 1970                     160.986 METERS 35927     |
 HV7524|---------------------------------------------------------------------|
 HV7524
 HV7524                          SUPERSEDED SURVEY CONTROL
 HV7524
 HV7524  NAD 83(1991)-  38 51 05.96652(N)    076 46 10.78850(W) AD(       ) 2
 HV7524  NAD 83(1986)-  38 51 05.96376(N)    076 46 10.80116(W) AD(       ) 2
 HV7524  NAD 27      -  38 51 05.55809(N)    076 46 11.91169(W) AD(       ) 2
 HV7524  NGVD 29 (07/19/86)   47.8    (m)          157.     (f) VERT ANG       
 HV7524
 HV7524.Superseded values are not recommended for survey control.
 HV7524
 HV7524.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7524.See file dsdata.pdf to determine how the superseded data were derived.
 HV7524
 HV7524_MARKER: I = METAL ROD
 HV7524_SETTING: 0 = UNSPECIFIED SETTING
 HV7524_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7524
 HV7524  HISTORY     - Date     Condition        Report By
 HV7524  HISTORY     - 1969     MONUMENTED       WSSC
 HV7524
 HV7524                          STATION DESCRIPTION
 HV7524
 HV7524'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7524'THE STATION IS LOCATED NORTHWEST OF UPPER MARLBORO ON THE WEST
 HV7524'SIDE OF ROUTE 202 (LARGO-MARLBORO ROAD).
 HV7524'
 HV7524'TO REACH THE STATION FROM THE INTERSECTION OF BROCK DRIVE AND
 HV7524'ROUTE 202, GO NORTH ON ROUTE 202 FOR .45 MILES TO THE STATION ON
 HV7524'THE LEFT.
 HV7524'
 HV7524'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7524'AND IS MARKED BROCK AZIMUTH MARK.  IT IS 22.07 FEET EAST OF A
 HV7524'4-INCH LOCUST, 31.70 FEET WEST OF ROUTE 202, AND 104.42 FEET NORTH
 HV7524'OF POLE NO. 867239.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7521 ***********************************************************************
 HV7521  DESIGNATION -  17499 WSSC 1970
 HV7521  PID         -  HV7521
 HV7521  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7521  COUNTRY     -  US
 HV7521  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7521
 HV7521                         *CURRENT SURVEY CONTROL
 HV7521  ______________________________________________________________________
 HV7521* NAD 83(1993) POSITION- 38 45 23.33057(N) 076 45 48.99649(W)   ADJUSTED
 HV7521* NAVD 88 ORTHO HEIGHT -    65.4   (meters)      215.    (feet) VERTCON3
 HV7521  ______________________________________________________________________
 HV7521  GEOID HEIGHT    -        -33.010 (meters)                     GEOID18
 HV7521  LAPLACE CORR    -         -5.84  (seconds)                    DEFLEC18
 HV7521  HORZ ORDER      -  SECOND
 HV7521
 HV7521.The horizontal coordinates were established by classical geodetic methods
 HV7521.and adjusted by the National Geodetic Survey in November 1994.
 HV7521
 HV7521.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7521.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7521
 HV7521.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7521.GEOID18 height accuracy estimate available here.
 HV7521
 HV7521.Click photographs - Photos may exist for this station.
 HV7521
 HV7521.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7521
 HV7521. The following values were computed from the NAD 83(1993) position.
 HV7521
 HV7521;                    North         East     Units Scale Factor Converg.
 HV7521;SPC MD       -   121,000.301   420,546.602   MT  0.99995201   +0 08 54.1
 HV7521;SPC MD       -   396,981.82  1,379,743.31   sFT  0.99995201   +0 08 54.1
 HV7521;UTM  18      - 4,291,230.228   346,758.529   MT  0.99988918   -1 06 15.3
 HV7521
 HV7521!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7521!SPC MD       -   0.99999493  x   0.99995201  =   0.99994694
 HV7521!UTM  18      -   0.99999493  x   0.99988918  =   0.99988411
 HV7521
 HV7521_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4675891230(NAD 83)
 HV7521
 HV7521                          SUPERSEDED SURVEY CONTROL
 HV7521
 HV7521  NAD 83(1991)-  38 45 23.33035(N)    076 45 48.99664(W) AD(       ) 2
 HV7521  NAD 83(1986)-  38 45 23.32765(N)    076 45 49.01071(W) AD(       ) 2
 HV7521  NAD 27      -  38 45 22.91320(N)    076 45 50.12297(W) AD(       ) 2
 HV7521  NGVD 29 (07/19/86)   65.6    (m)          215.     (f) VERT ANG       
 HV7521
 HV7521.Superseded values are not recommended for survey control.
 HV7521
 HV7521.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7521.See file dsdata.pdf to determine how the superseded data were derived.
 HV7521
 HV7521_MARKER: I = METAL ROD
 HV7521_SETTING: 0 = UNSPECIFIED SETTING
 HV7521_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7521
 HV7521  HISTORY     - Date     Condition        Report By
 HV7521  HISTORY     - 1969     MONUMENTED       WSSC
 HV7521
 HV7521                          STATION DESCRIPTION
 HV7521
 HV7521'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7521'THE STATION IS LOCATED ABOUT .30 MILES NORTH OF CROOM ON THE
 HV7521'WEST SIDE OF CROOM ROAD (ROUTE 382).
 HV7521'
 HV7521'TO REACH THE STATION FROM THE INTERSECTION OF DULEY STATION ROAD
 HV7521'AND ROUTE 382, GO NORTH ON ROUTE 382 FOR .30 MILES TO THE STATION
 HV7521'ON THE LEFT.
 HV7521'
 HV7521'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7521'AND IS SET FLUSH WITH THE SURFACE.  IT IS 18.59 FEET SOUTH OF
 HV7521'PEPCO POLE NO. 820079, 10.10 FEET SOUTHWEST OF AN X CUT IN THE
 HV7521'NORTH END OF A HEADWALL, 2.82 FEET SOUTHWEST OF AN X CUT IN THE
 HV7521'SOUTH END OF A HEADWALL, 37.74 FEET WEST OF C AND P POLE NO. 80
 HV7521'AND 6.50 FEET NORTHEAST OF A 36-INCH WALNUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0042 ***********************************************************************
 JV0042  DESIGNATION -  175
 JV0042  PID         -  JV0042
 JV0042  STATE/COUNTY-  MD/CECIL
 JV0042  COUNTRY     -  US
 JV0042  USGS QUAD   -  CONOWINGO DAM (2016)
 JV0042
 JV0042                         *CURRENT SURVEY CONTROL
 JV0042  ______________________________________________________________________
 JV0042* NAD 83(1986) POSITION- 39 40 05.     (N) 076 10 13.     (W)   SCALED
 JV0042* NAVD 88 ORTHO HEIGHT -    53.15  (+/-2cm)      174.4   (feet) VERTCON3
 JV0042  ______________________________________________________________________
 JV0042  GEOID HEIGHT    -        -32.907 (meters)                     GEOID18
 JV0042  VERT ORDER      -  ? (See Below)
 JV0042
 JV0042.The horizontal coordinates were scaled from a map and have
 JV0042.an estimated accuracy of +/- 6 seconds.
 JV0042
 JV0042.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV0042.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV0042
 JV0042.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0042.GEOID18 height accuracy estimate available here.
 JV0042
 JV0042.The vertical order pertains to the NGVD 29 superseded value.
 JV0042
 JV0042.Click photographs - Photos may exist for this station.
 JV0042
 JV0042;                    North         East    Units  Estimated Accuracy
 JV0042;SPC MD       -   222,500.      471,200.      MT  (+/- 180 meters Scaled)
 JV0042
 JV0042_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ996915(NAD 83)
 JV0042
 JV0042                          SUPERSEDED SURVEY CONTROL
 JV0042
 JV0042  NGVD 29 (11/26/84)   53.410  (m)          175.23   (f) ADJUSTED       
 JV0042
 JV0042.Superseded values are not recommended for survey control.
 JV0042
 JV0042.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0042.See file dsdata.pdf to determine how the superseded data were derived.
 JV0042
 JV0042_MARKER: Z = SEE DESCRIPTION
 JV0042_SETTING: 0 = UNSPECIFIED SETTING
 JV0042
 JV0042  HISTORY     - Date     Condition        Report By
 JV0042  HISTORY     - UNK      MONUMENTED       USGS
 JV0042  HISTORY     - 1955     MARK NOT FOUND   CGS
 JV0042
 JV0042                          STATION DESCRIPTION
 JV0042
 JV0042'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0042'AT CONOWINGO DAM.
 JV0042'AT CONOWINGO DAM, CECIL COUNTY, AT CAMP 3 C.B., AND AT THE SOUTH
 JV0042'BASE MARK FOR THE CENTER LINE OF THE DAM.  A BRASS PLUG SET IN
 JV0042'THE TOP OF A CONCRETE POST.  IF THIS MARK IS ON THE SOUTH END OF
 JV0042'THE CENTER LINE OF THE DAM IT APPEARS THAT IT WOULD BE IN HARFORD
 JV0042'COUNTY AND ACROSS THE RIVER FROM THE LINE.  ITS ELEVATION WOULD
 JV0042'BE NEAR THE TOP OF THE RIVER BLUFF ON THE RIGHT BANK OF THE RIVER.
 JV0042'UNABLE TO LOCATE OR ACCOUNT FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4877 ***********************************************************************
 HV4877  DESIGNATION -  17500 WSSC 1969
 HV4877  PID         -  HV4877
 HV4877  STATE/COUNTY-  MD/MONTGOMERY
 HV4877  COUNTRY     -  US
 HV4877  USGS QUAD   -  FALLS CHURCH (2019)
 HV4877
 HV4877                         *CURRENT SURVEY CONTROL
 HV4877  ______________________________________________________________________
 HV4877* NAD 83(1993) POSITION- 38 58 38.52495(N) 077 07 45.60059(W)   ADJUSTED
 HV4877* NAVD 88 ORTHO HEIGHT -    96.1   (meters)      315.    (feet) VERTCON3
 HV4877  ______________________________________________________________________
 HV4877  GEOID HEIGHT    -        -31.840 (meters)                     GEOID18
 HV4877  LAPLACE CORR    -         -1.97  (seconds)                    DEFLEC18
 HV4877  HORZ ORDER      -  SECOND
 HV4877
 HV4877.The horizontal coordinates were established by classical geodetic methods
 HV4877.and adjusted by the National Geodetic Survey in November 1994.
 HV4877
 HV4877.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4877.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4877
 HV4877.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4877.GEOID18 height accuracy estimate available here.
 HV4877
 HV4877.Click photographs - Photos may exist for this station.
 HV4877
 HV4877.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4877
 HV4877. The following values were computed from the NAD 83(1993) position.
 HV4877
 HV4877;                    North         East     Units Scale Factor Converg.
 HV4877;SPC MD       -   145,501.775   388,793.284   MT  0.99995141   -0 04 52.2
 HV4877;SPC MD       -   477,367.07  1,275,565.97   sFT  0.99995141   -0 04 52.2
 HV4877;UTM  18      - 4,316,421.557   315,549.597   MT  1.00001895   -1 20 23.1
 HV4877
 HV4877!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4877!SPC MD       -   0.99998992  x   0.99995141  =   0.99994133
 HV4877!UTM  18      -   0.99998992  x   1.00001895  =   1.00000887
 HV4877
 HV4877:                Primary Azimuth Mark                     Grid Az
 HV4877:SPC MD       -  WHITTIER                                 000 58 22.1
 HV4877:UTM  18      -  WHITTIER                                 002 13 53.0
 HV4877
 HV4877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1554916421(NAD 83)
 HV4877
 HV4877|---------------------------------------------------------------------|
 HV4877| PID    Reference Object                     Distance      Geod. Az  |
 HV4877|                                                           dddmmss.s |
 HV4877| HV4875 WHITTIER                            APPROX. 0.6 KM 0005329.9 |
 HV4877| HV4463 BETHESDA TV STA WDCA MAST           APPROX. 2.6 KM 1250718.4 |
 HV4877| HV4878 17218 WSSC 1969                     111.999 METERS 30409     |
 HV4877|---------------------------------------------------------------------|
 HV4877
 HV4877                          SUPERSEDED SURVEY CONTROL
 HV4877
 HV4877  NAD 83(1991)-  38 58 38.52428(N)    077 07 45.60177(W) AD(       ) 2
 HV4877  NAD 83(1986)-  38 58 38.52415(N)    077 07 45.61156(W) AD(       ) 2
 HV4877  NAD 27      -  38 58 38.12915(N)    077 07 46.68100(W) AD(       ) 2
 HV4877  NGVD 29 (07/19/86)   96.3    (m)          316.     (f) VERT ANG       
 HV4877
 HV4877.Superseded values are not recommended for survey control.
 HV4877
 HV4877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4877.See file dsdata.pdf to determine how the superseded data were derived.
 HV4877
 HV4877_MARKER: I = METAL ROD
 HV4877_SETTING: 0 = UNSPECIFIED SETTING
 HV4877_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4877
 HV4877  HISTORY     - Date     Condition        Report By
 HV4877  HISTORY     - 1969     MONUMENTED       WSSC
 HV4877  HISTORY     - 20020310 MARK NOT FOUND   USPSQD
 HV4877
 HV4877                          STATION DESCRIPTION
 HV4877
 HV4877'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4877'THE STATION IS ABOUT 1-1/2 MILES NORTHEAST OF CABIN JOHN AND
 HV4877'1 MILE NORTH OF GLEN ECHO HEIGHTS.
 HV4877'
 HV4877'TO REACH THE STATION FROM THE INTERSECTION OF BRAEBURN PARKWAY
 HV4877'AND RIVER ROAD ROUTE 190, GO EAST ON RIVER ROAD FOR .30 MILE
 HV4877'TO THE STATION ON THE LEFT.
 HV4877'
 HV4877'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV4877'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 9.1 FEET SOUTHEAST
 HV4877'OF A 1-INCH TREE, 30.7 FEET NORTH OF A 4-INCH TREE, AND 2.7
 HV4877'FEET WEST OF A 2-INCH LOCUST.
 HV4877
 HV4877                          STATION RECOVERY (2002)
 HV4877
 HV4877'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV4877'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4512 ***********************************************************************
 JV4512  DESIGNATION -  17501 WSSC 1969
 JV4512  PID         -  JV4512
 JV4512  STATE/COUNTY-  MD/MONTGOMERY
 JV4512  COUNTRY     -  US
 JV4512  USGS QUAD   -  SENECA (2016)
 JV4512
 JV4512                         *CURRENT SURVEY CONTROL
 JV4512  ______________________________________________________________________
 JV4512* NAD 83(1993) POSITION- 39 06 49.60015(N) 077 17 59.84431(W)   ADJUSTED
 JV4512* NAVD 88 ORTHO HEIGHT -   126.1   (meters)      414.    (feet) VERTCON3
 JV4512  ______________________________________________________________________
 JV4512  GEOID HEIGHT    -        -31.823 (meters)                     GEOID18
 JV4512  LAPLACE CORR    -          3.33  (seconds)                    DEFLEC18
 JV4512  HORZ ORDER      -  SECOND
 JV4512
 JV4512.The horizontal coordinates were established by classical geodetic methods
 JV4512.and adjusted by the National Geodetic Survey in November 1994.
 JV4512
 JV4512.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4512.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4512
 JV4512.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4512.GEOID18 height accuracy estimate available here.
 JV4512
 JV4512.Click photographs - Photos may exist for this station.
 JV4512
 JV4512.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4512
 JV4512. The following values were computed from the NAD 83(1993) position.
 JV4512
 JV4512;                    North         East     Units Scale Factor Converg.
 JV4512;SPC MD       -   160,679.482   374,058.616   MT  0.99995845   -0 11 17.7
 JV4512;SPC MD       -   527,162.60  1,227,223.98   sFT  0.99995845   -0 11 17.7
 JV4512;UTM  18      - 4,331,921.327   301,151.051   MT  1.00008690   -1 27 05.2
 JV4512
 JV4512!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4512!SPC MD       -   0.99998521  x   0.99995845  =   0.99994366
 JV4512!UTM  18      -   0.99998521  x   1.00008690  =   1.00007211
 JV4512
 JV4512:                Primary Azimuth Mark                     Grid Az
 JV4512:SPC MD       -  ATHEY                                    142 14 35.7
 JV4512:UTM  18      -  ATHEY                                    143 30 23.2
 JV4512
 JV4512_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0115131921(NAD 83)
 JV4512
 JV4512|---------------------------------------------------------------------|
 JV4512| PID    Reference Object                     Distance      Geod. Az  |
 JV4512|                                                           dddmmss.s |
 JV4512| JV4461 BROWNSTOWN PEPCO MICROWAVE          APPROX. 2.7 KM 0121238.4 |
 JV4512| JV2900 ATHEY                               APPROX. 1.5 KM 1420318.0 |
 JV4512| JV4514 17061 WSSC 1969                     237.686 METERS 20345     |
 JV4512|---------------------------------------------------------------------|
 JV4512
 JV4512                          SUPERSEDED SURVEY CONTROL
 JV4512
 JV4512  NAD 83(1991)-  39 06 49.59938(N)    077 17 59.84446(W) AD(       ) 2
 JV4512  NAD 83(1986)-  39 06 49.59983(N)    077 17 59.85482(W) AD(       ) 2
 JV4512  NAD 27      -  39 06 49.21239(N)    077 18 00.90581(W) AD(       ) 2
 JV4512  NGVD 29 (07/19/86)  126.3    (m)          414.     (f) VERT ANG       
 JV4512
 JV4512.Superseded values are not recommended for survey control.
 JV4512
 JV4512.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4512.See file dsdata.pdf to determine how the superseded data were derived.
 JV4512
 JV4512_MARKER: I = METAL ROD
 JV4512_SETTING: 0 = UNSPECIFIED SETTING
 JV4512_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4512
 JV4512  HISTORY     - Date     Condition        Report By
 JV4512  HISTORY     - 1969     MONUMENTED       WSSC
 JV4512
 JV4512                          STATION DESCRIPTION
 JV4512
 JV4512'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4512'THE STATION IS ABOUT 1 MILE NORTHWEST OF DARNESTOWN AND 3 MILES
 JV4512'SOUTHEAST OF DAWSONVILLE.
 JV4512'
 JV4512'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 118 AND
 JV4512'ROUTE 28, GO NORTH ON ROUTE 118 FOR .35 MILES TO THE STATION
 JV4512'ON THE RIGHT.
 JV4512'
 JV4512'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4512'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 48.45 FEET SOUTH OF
 JV4512'POWER LINE POLE NO. 648414, 38.75 FEET NORTH OF POWER LINE POLE
 JV4512'NO. 624339 AND 13.02 FEET EAST OF THE EAST EDGE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4558 ***********************************************************************
 JV4558  DESIGNATION -  17502 WSSC 1969
 JV4558  PID         -  JV4558
 JV4558  STATE/COUNTY-  MD/MONTGOMERY
 JV4558  COUNTRY     -  US
 JV4558  USGS QUAD   -  POOLESVILLE (2016)
 JV4558
 JV4558                         *CURRENT SURVEY CONTROL
 JV4558  ______________________________________________________________________
 JV4558* NAD 83(1991) POSITION- 39 12 15.45050(N) 077 24 38.99856(W)   ADJUSTED
 JV4558* NAVD 88 ORTHO HEIGHT -   146.9   (meters)      482.    (feet) VERTCON3
 JV4558  ______________________________________________________________________
 JV4558  GEOID HEIGHT    -        -32.209 (meters)                     GEOID18
 JV4558  LAPLACE CORR    -          6.66  (seconds)                    DEFLEC18
 JV4558  HORZ ORDER      -  SECOND
 JV4558
 JV4558.The horizontal coordinates were established by classical geodetic methods
 JV4558.and adjusted by the National Geodetic Survey in January 1992.
 JV4558
 JV4558.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4558.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4558
 JV4558.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4558.GEOID18 height accuracy estimate available here.
 JV4558
 JV4558.Click photographs - Photos may exist for this station.
 JV4558
 JV4558.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4558
 JV4558. The following values were computed from the NAD 83(1991) position.
 JV4558
 JV4558;                    North         East     Units Scale Factor Converg.
 JV4558;SPC MD       -   170,765.059   364,514.906   MT  0.99996624   -0 15 28.3
 JV4558;SPC MD       -   560,251.70  1,195,912.65   sFT  0.99996624   -0 15 28.3
 JV4558;UTM  18      - 4,342,216.635   291,830.914   MT  1.00013360   -1 31 27.9
 JV4558
 JV4558!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4558!SPC MD       -   0.99998201  x   0.99996624  =   0.99994825
 JV4558!UTM  18      -   0.99998201  x   1.00013360  =   1.00011560
 JV4558
 JV4558:                Primary Azimuth Mark                     Grid Az
 JV4558:SPC MD       -  SCHOLLS HILL 3                           347 28 46.6
 JV4558:UTM  18      -  SCHOLLS HILL 3                           348 44 46.2
 JV4558
 JV4558_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9183042216(NAD 83)
 JV4558
 JV4558|---------------------------------------------------------------------|
 JV4558| PID    Reference Object                     Distance      Geod. Az  |
 JV4558|                                                           dddmmss.s |
 JV4558| JV4542 DICKERSON PEPCO W STACK             APPROX. 4.6 KM 2765452.5 |
 JV4558| JV4559 17206 WSSC 1969                     202.835 METERS 34635     |
 JV4558| JV3862 SCHOLLS HILL 3                      APPROX. 2.6 KM 3471318.3 |
 JV4558|---------------------------------------------------------------------|
 JV4558
 JV4558                          SUPERSEDED SURVEY CONTROL
 JV4558
 JV4558  NAD 83(1986)-  39 12 15.45012(N)    077 24 39.00914(W) AD(       ) 2
 JV4558  NAD 27      -  39 12 15.06835(N)    077 24 40.04566(W) AD(       ) 2
 JV4558  NGVD 29 (07/19/86)  147.1    (m)          483.     (f) VERT ANG       
 JV4558
 JV4558.Superseded values are not recommended for survey control.
 JV4558
 JV4558.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4558.See file dsdata.pdf to determine how the superseded data were derived.
 JV4558
 JV4558_MARKER: I = METAL ROD
 JV4558_SETTING: 0 = UNSPECIFIED SETTING
 JV4558_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4558
 JV4558  HISTORY     - Date     Condition        Report By
 JV4558  HISTORY     - 1969     MONUMENTED       WSSC
 JV4558
 JV4558                          STATION DESCRIPTION
 JV4558
 JV4558'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4558'THE STATION IS ABOUT 1-1/2 MILES SOUTHEAST OF DICKERSON, 1-1/2
 JV4558'MILES NORTHWEST OF BEALLSVILLE.
 JV4558'
 JV4558'TO REACH THE STATION FROM ROUTE 28 AND BIG WOODS ROAD GO
 JV4558'SOUTHEAST ON BIG WOODS ROAD FOR 1.5 MILES TO STATION ON THE LEFT.
 JV4558'
 JV4558'THE STATION MARK IS A CONCRETE MONUMENT WITH A IRON ROD
 JV4558'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 11.5 FEET EAST OF
 JV4558'THE EDGE OF THE ROAD, 32.2 FEET EAST OF POWER LINE POLE 24,
 JV4558'18.5 FEET SOUTH OF A 6-INCH LOCUST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4589 ***********************************************************************
 JV4589  DESIGNATION -  17503 WSSC 1969
 JV4589  PID         -  JV4589
 JV4589  STATE/COUNTY-  MD/MONTGOMERY
 JV4589  COUNTRY     -  US
 JV4589  USGS QUAD   -  URBANA (2016)
 JV4589
 JV4589                         *CURRENT SURVEY CONTROL
 JV4589  ______________________________________________________________________
 JV4589* NAD 83(1993) POSITION- 39 17 06.42578(N) 077 16 58.51890(W)   ADJUSTED
 JV4589* NAVD 88 ORTHO HEIGHT -   199.4   (meters)      654.    (feet) VERTCON3
 JV4589  ______________________________________________________________________
 JV4589  GEOID HEIGHT    -        -32.025 (meters)                     GEOID18
 JV4589  LAPLACE CORR    -          5.22  (seconds)                    DEFLEC18
 JV4589  HORZ ORDER      -  SECOND
 JV4589
 JV4589.The horizontal coordinates were established by classical geodetic methods
 JV4589.and adjusted by the National Geodetic Survey in November 1994.
 JV4589
 JV4589.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4589.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4589
 JV4589.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4589.GEOID18 height accuracy estimate available here.
 JV4589
 JV4589.Click photographs - Photos may exist for this station.
 JV4589
 JV4589.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4589
 JV4589. The following values were computed from the NAD 83(1993) position.
 JV4589
 JV4589;                    North         East     Units Scale Factor Converg.
 JV4589;SPC MD       -   179,696.138   375,590.799   MT  0.99997531   -0 10 39.3
 JV4589;SPC MD       -   589,553.08  1,232,250.81   sFT  0.99997531   -0 10 39.3
 JV4589;UTM  18      - 4,350,901.697   303,103.171   MT  1.00007736   -1 26 45.5
 JV4589
 JV4589!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4589!SPC MD       -   0.99997374  x   0.99997531  =   0.99994905
 JV4589!UTM  18      -   0.99997374  x   1.00007736  =   1.00005110
 JV4589
 JV4589:                Primary Azimuth Mark                     Grid Az
 JV4589:SPC MD       -  DALE RM 1                                080 03 48.3
 JV4589:UTM  18      -  DALE RM 1                                081 19 54.5
 JV4589
 JV4589_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0310350901(NAD 83)
 JV4589
 JV4589|---------------------------------------------------------------------|
 JV4589| PID    Reference Object                     Distance      Geod. Az  |
 JV4589|                                                           dddmmss.s |
 JV4589| JV4588 17097 WSSC 1969                     155.234 METERS 04525     |
 JV4589| JV4582 DALE RM 1                           APPROX. 1.9 KM 0795309.0 |
 JV4589|---------------------------------------------------------------------|
 JV4589
 JV4589                          SUPERSEDED SURVEY CONTROL
 JV4589
 JV4589  NAD 83(1991)-  39 17 06.42508(N)    077 16 58.51881(W) AD(       ) 2
 JV4589  NAD 83(1986)-  39 17 06.42531(N)    077 16 58.52940(W) AD(       ) 2
 JV4589  NAD 27      -  39 17 06.04680(N)    077 16 59.58041(W) AD(       ) 2
 JV4589  NGVD 29 (07/19/86)  199.6    (m)          655.     (f) VERT ANG       
 JV4589
 JV4589.Superseded values are not recommended for survey control.
 JV4589
 JV4589.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4589.See file dsdata.pdf to determine how the superseded data were derived.
 JV4589
 JV4589_MARKER: I = METAL ROD
 JV4589_SETTING: 0 = UNSPECIFIED SETTING
 JV4589_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4589
 JV4589  HISTORY     - Date     Condition        Report By
 JV4589  HISTORY     - 1969     MONUMENTED       WSSC
 JV4589
 JV4589                          STATION DESCRIPTION
 JV4589
 JV4589'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4589'THE STATION IS ABOUT 1 MILE WEST OF LEWISDALE AND 1-3/4 MILES
 JV4589'EAST OF HYATTSTOWN.
 JV4589'
 JV4589'TO REACH THE STATION FROM THE INTERSECTION OF RUDALE ROAD AND
 JV4589'BERRYBELL ROAD, GO SOUTH ON RUDALE ROAD FOR .2 MILE TO THE
 JV4589'STATION ON THE RIGHT.
 JV4589'
 JV4589'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4589'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 8.05 FEET NORTHEAST
 JV4589'OF POWER LINE POLE 56894, 68.38 FEET SOUTHEAST OF A 12-INCH
 JV4589'OAK TREE AND 73.75 FEET WEST OF A POWER LINE POLE 56890.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4439 ***********************************************************************
 JV4439  DESIGNATION -  17506 WSSC 1969
 JV4439  PID         -  JV4439
 JV4439  STATE/COUNTY-  MD/MONTGOMERY
 JV4439  COUNTRY     -  US
 JV4439  USGS QUAD   -  GAITHERSBURG (2016)
 JV4439
 JV4439                         *CURRENT SURVEY CONTROL
 JV4439  ______________________________________________________________________
 JV4439* NAD 83(1993) POSITION- 39 12 47.85874(N) 077 11 23.32221(W)   ADJUSTED
 JV4439* NAVD 88 ORTHO HEIGHT -   136.1   (meters)      447.    (feet) VERTCON3
 JV4439  ______________________________________________________________________
 JV4439  GEOID HEIGHT    -        -31.787 (meters)                     GEOID18
 JV4439  LAPLACE CORR    -          1.25  (seconds)                    DEFLEC18
 JV4439  HORZ ORDER      -  SECOND
 JV4439
 JV4439.The horizontal coordinates were established by classical geodetic methods
 JV4439.and adjusted by the National Geodetic Survey in November 1994.
 JV4439
 JV4439.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4439.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4439
 JV4439.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4439.GEOID18 height accuracy estimate available here.
 JV4439
 JV4439.Click photographs - Photos may exist for this station.
 JV4439
 JV4439.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4439
 JV4439. The following values were computed from the NAD 83(1993) position.
 JV4439
 JV4439;                    North         East     Units Scale Factor Converg.
 JV4439;SPC MD       -   171,701.649   383,607.324   MT  0.99996715   -0 07 08.9
 JV4439;SPC MD       -   563,324.49  1,258,551.70   sFT  0.99996715   -0 07 08.9
 JV4439;UTM  18      - 4,342,731.186   310,941.648   MT  1.00004012   -1 23 05.4
 JV4439
 JV4439!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4439!SPC MD       -   0.99998364  x   0.99996715  =   0.99995079
 JV4439!UTM  18      -   0.99998364  x   1.00004012  =   1.00002376
 JV4439
 JV4439:                Primary Azimuth Mark                     Grid Az
 JV4439:SPC MD       -  LAYTON                                   091 35 50.4
 JV4439:UTM  18      -  LAYTON                                   092 51 46.9
 JV4439
 JV4439_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1094142731(NAD 83)
 JV4439
 JV4439|---------------------------------------------------------------------|
 JV4439| PID    Reference Object                     Distance      Geod. Az  |
 JV4439|                                                           dddmmss.s |
 JV4439| JV4425 LAYTON                              APPROX. 4.1 KM 0912841.5 |
 JV4439|---------------------------------------------------------------------|
 JV4439
 JV4439                          SUPERSEDED SURVEY CONTROL
 JV4439
 JV4439  NAD 83(1991)-  39 12 47.85854(N)    077 11 23.32231(W) AD(       ) 2
 JV4439  NAD 83(1986)-  39 12 47.85839(N)    077 11 23.33233(W) AD(       ) 2
 JV4439  NAD 27      -  39 12 47.47582(N)    077 11 24.39439(W) AD(       ) 2
 JV4439  NGVD 29 (07/19/86)  136.3    (m)          447.     (f) VERT ANG       
 JV4439
 JV4439.Superseded values are not recommended for survey control.
 JV4439
 JV4439.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4439.See file dsdata.pdf to determine how the superseded data were derived.
 JV4439
 JV4439_MARKER: I = METAL ROD
 JV4439_SETTING: 0 = UNSPECIFIED SETTING
 JV4439_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4439
 JV4439  HISTORY     - Date     Condition        Report By
 JV4439  HISTORY     - 1969     MONUMENTED       WSSC
 JV4439
 JV4439                          STATION DESCRIPTION
 JV4439
 JV4439'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4439'THE STATION IS ABOUT 2-1/2 MILES WEST OF LAYTONSVILLE AND 1/2
 JV4439'MILE NORTH OF GOSHEN.
 JV4439'
 JV4439'TO REACH THE STATION FROM THE INTERSECTION OF BLUNT ROAD AND
 JV4439'GOSHEN ROAD GO SOUTHEAST ON BLUNT ROAD FOR .1 MILE TO THE
 JV4439'STATION ON THE LEFT.
 JV4439'
 JV4439'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4439'CENTER AND IS FLUSH WITH THE SURFACE.  IT IS 45.42 FEET WEST
 JV4439'OF PEPCO POLE 624, AND 25.35 FEET NORTH OF A 24-INCH LOCUST TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4330 ***********************************************************************
 JV4330  DESIGNATION -  17507 WSSC 1969
 JV4330  PID         -  JV4330
 JV4330  STATE/COUNTY-  MD/MONTGOMERY
 JV4330  COUNTRY     -  US
 JV4330  USGS QUAD   -  KENSINGTON (2016)
 JV4330
 JV4330                         *CURRENT SURVEY CONTROL
 JV4330  ______________________________________________________________________
 JV4330* NAD 83(1991) POSITION- 39 07 18.33352(N) 077 04 27.59079(W)   ADJUSTED
 JV4330* NAVD 88 ORTHO HEIGHT -   157.1   (meters)      515.    (feet) VERTCON3
 JV4330  ______________________________________________________________________
 JV4330  GEOID HEIGHT    -        -31.814 (meters)                     GEOID18
 JV4330  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 JV4330  HORZ ORDER      -  SECOND
 JV4330
 JV4330.The horizontal coordinates were established by classical geodetic methods
 JV4330.and adjusted by the National Geodetic Survey in January 1992.
 JV4330
 JV4330.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4330.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4330
 JV4330.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4330.GEOID18 height accuracy estimate available here.
 JV4330
 JV4330.Click photographs - Photos may exist for this station.
 JV4330
 JV4330.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4330
 JV4330. The following values were computed from the NAD 83(1991) position.
 JV4330
 JV4330;                    North         East     Units Scale Factor Converg.
 JV4330;SPC MD       -   161,525.530   393,572.307   MT  0.99995904   -0 02 47.9
 JV4330;SPC MD       -   529,938.34  1,291,245.14   sFT  0.99995904   -0 02 47.9
 JV4330;UTM  18      - 4,332,337.137   320,680.247   MT  0.99999595   -1 18 33.1
 JV4330
 JV4330!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4330!SPC MD       -   0.99998035  x   0.99995904  =   0.99993939
 JV4330!UTM  18      -   0.99998035  x   0.99999595  =   0.99997630
 JV4330
 JV4330:                Primary Azimuth Mark                     Grid Az
 JV4330:SPC MD       -  NORBECK                                  201 27 28.9
 JV4330:UTM  18      -  NORBECK                                  202 43 14.1
 JV4330
 JV4330_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2068032337(NAD 83)
 JV4330
 JV4330|---------------------------------------------------------------------|
 JV4330| PID    Reference Object                     Distance      Geod. Az  |
 JV4330|                                                           dddmmss.s |
 JV4330| JV4312 NORBECK                             APPROX. 1.6 KM 2012441.0 |
 JV4330|---------------------------------------------------------------------|
 JV4330
 JV4330                          SUPERSEDED SURVEY CONTROL
 JV4330
 JV4330  NAD 83(1986)-  39 07 18.33319(N)    077 04 27.60069(W) AD(       ) 2
 JV4330  NAD 27      -  39 07 17.94484(N)    077 04 28.67553(W) AD(       ) 2
 JV4330  NGVD 29 (07/19/86)  157.3    (m)          516.     (f) VERT ANG       
 JV4330
 JV4330.Superseded values are not recommended for survey control.
 JV4330
 JV4330.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4330.See file dsdata.pdf to determine how the superseded data were derived.
 JV4330
 JV4330_MARKER: I = METAL ROD
 JV4330_SETTING: 0 = UNSPECIFIED SETTING
 JV4330_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4330
 JV4330  HISTORY     - Date     Condition        Report By
 JV4330  HISTORY     - 1969     MONUMENTED       WSSC
 JV4330
 JV4330                          STATION DESCRIPTION
 JV4330
 JV4330'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4330'THE STATION IS ABOUT 1 MILE NORTH OF NORBECK AND 2-1/2 MILE WEST
 JV4330'OF NORWOOD.
 JV4330'
 JV4330'TO REACH THE STATION FROM THE INTERSECTION OF BACHELORS FOREST
 JV4330'ROAD AND ROUTE 97 (GEORGIA AVENUE), GO SOUTH ON ROUTE 97 FOR .1
 JV4330'MILE TO THE STATION ON THE RIGHT.
 JV4330'
 JV4330'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4330'CENTER AND IS 1.0 FOOT BELOW THE SURFACE.  IT IS 49.89 FEET
 JV4330'SOUTH OF POLE M-98, 77.82 FEET NORTH OF POLE M-98 1/2, 78.87
 JV4330'FEET NORTHWEST OF POLE TR 5562, AND 89.18 FEET SOUTHWEST OF POLE
 JV4330'TR 5561.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4264 ***********************************************************************
 JV4264  DESIGNATION -  17508 WSSC 1969
 JV4264  PID         -  JV4264
 JV4264  STATE/COUNTY-  MD/MONTGOMERY
 JV4264  COUNTRY     -  US
 JV4264  USGS QUAD   -  SANDY SPRING (2016)
 JV4264
 JV4264                         *CURRENT SURVEY CONTROL
 JV4264  ______________________________________________________________________
 JV4264* NAD 83(1991) POSITION- 39 12 56.75221(N) 077 06 55.65998(W)   ADJUSTED
 JV4264* NAVD 88 ORTHO HEIGHT -   167.7   (meters)      550.    (feet) VERTCON3
 JV4264  ______________________________________________________________________
 JV4264  GEOID HEIGHT    -        -31.780 (meters)                     GEOID18
 JV4264  LAPLACE CORR    -         -1.19  (seconds)                    DEFLEC18
 JV4264  HORZ ORDER      -  SECOND
 JV4264
 JV4264.The horizontal coordinates were established by classical geodetic methods
 JV4264.and adjusted by the National Geodetic Survey in January 1992.
 JV4264
 JV4264.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4264.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4264
 JV4264.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4264.GEOID18 height accuracy estimate available here.
 JV4264
 JV4264.Click photographs - Photos may exist for this station.
 JV4264
 JV4264.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4264
 JV4264. The following values were computed from the NAD 83(1991) position.
 JV4264
 JV4264;                    North         East     Units Scale Factor Converg.
 JV4264;SPC MD       -   171,965.167   390,028.796   MT  0.99996741   -0 04 20.9
 JV4264;SPC MD       -   564,189.05  1,279,619.47   sFT  0.99996741   -0 04 20.9
 JV4264;UTM  18      - 4,342,852.822   317,367.746   MT  1.00001070   -1 20 16.3
 JV4264
 JV4264!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4264!SPC MD       -   0.99997868  x   0.99996741  =   0.99994609
 JV4264!UTM  18      -   0.99997868  x   1.00001070  =   0.99998938
 JV4264
 JV4264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1736742852(NAD 83)
 JV4264
 JV4264                          SUPERSEDED SURVEY CONTROL
 JV4264
 JV4264  NAD 83(1986)-  39 12 56.75203(N)    077 06 55.66971(W) AD(       ) 2
 JV4264  NAD 27      -  39 12 56.36905(N)    077 06 56.73952(W) AD(       ) 2
 JV4264  NGVD 29 (07/19/86)  167.9    (m)          551.     (f) VERT ANG       
 JV4264
 JV4264.Superseded values are not recommended for survey control.
 JV4264
 JV4264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4264.See file dsdata.pdf to determine how the superseded data were derived.
 JV4264
 JV4264_MARKER: I = METAL ROD
 JV4264_SETTING: 0 = UNSPECIFIED SETTING
 JV4264_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4264
 JV4264  HISTORY     - Date     Condition        Report By
 JV4264  HISTORY     - 1969     MONUMENTED       WSSC
 JV4264
 JV4264                          STATION DESCRIPTION
 JV4264
 JV4264'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4264'THE STATION IS ABOUT 2-1/2 MILE WEST OF UNITY AND 1-1/2 MILES
 JV4264'NORTH OF CLAYSVILLE.
 JV4264'
 JV4264'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 420 AND
 JV4264'ROUTE 108, GO EAST ON ROUTE 108 FOR 1.5 MILES TO THE STATION
 JV4264'ON THE LEFT.
 JV4264'
 JV4264'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 JV4264'CENTER AND IS 1 INCH BELOW THE SURFACE.  IT IS 21.13 FEET
 JV4264'SOUTHEAST OF A 30-INCH OAK TREE, 44.01 FEET SOUTHEAST OF AN
 JV4264'18-INCH OAK TREE, 36.07 FEET SOUTH OF A 15-INCH TWIN OAK TREE,
 JV4264'63.86 FEET SOUTHWEST OF A 40-INCH OAK AND 75.52 FEET SOUTHWEST
 JV4264'OF A 15-INCH HICKORY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4325 ***********************************************************************
 JV4325  DESIGNATION -  17509 WSSC 1969
 JV4325  PID         -  JV4325
 JV4325  STATE/COUNTY-  MD/MONTGOMERY
 JV4325  COUNTRY     -  US
 JV4325  USGS QUAD   -  KENSINGTON (2016)
 JV4325
 JV4325                         *CURRENT SURVEY CONTROL
 JV4325  ______________________________________________________________________
 JV4325* NAD 83(1991) POSITION- 39 03 54.95082(N) 077 02 20.36732(W)   ADJUSTED
 JV4325* NAVD 88 ORTHO HEIGHT -   139.2   (meters)      457.    (feet) VERTCON3
 JV4325  ______________________________________________________________________
 JV4325  GEOID HEIGHT    -        -31.911 (meters)                     GEOID18
 JV4325  LAPLACE CORR    -         -3.56  (seconds)                    DEFLEC18
 JV4325  HORZ ORDER      -  SECOND
 JV4325
 JV4325.The horizontal coordinates were established by classical geodetic methods
 JV4325.and adjusted by the National Geodetic Survey in January 1992.
 JV4325
 JV4325.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4325.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4325
 JV4325.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4325.GEOID18 height accuracy estimate available here.
 JV4325
 JV4325.Click photographs - Photos may exist for this station.
 JV4325
 JV4325.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4325
 JV4325. The following values were computed from the NAD 83(1991) position.
 JV4325
 JV4325;                    North         East     Units Scale Factor Converg.
 JV4325;SPC MD       -   155,251.961   396,625.613   MT  0.99995530   -0 01 28.1
 JV4325;SPC MD       -   509,355.81  1,301,262.53   sFT  0.99995530   -0 01 28.1
 JV4325;UTM  18      - 4,325,997.653   323,594.771   MT  0.99998319   -1 17 07.1
 JV4325
 JV4325!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4325!SPC MD       -   0.99998317  x   0.99995530  =   0.99993847
 JV4325!UTM  18      -   0.99998317  x   0.99998319  =   0.99996636
 JV4325
 JV4325:                Primary Azimuth Mark                     Grid Az
 JV4325:SPC MD       -  GLENMONT RM 3                            249 10 50.4
 JV4325:UTM  18      -  GLENMONT RM 3                            250 26 29.4
 JV4325
 JV4325_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2359425997(NAD 83)
 JV4325
 JV4325|---------------------------------------------------------------------|
 JV4325| PID    Reference Object                     Distance      Geod. Az  |
 JV4325|                                                           dddmmss.s |
 JV4325| JV4292 COLESVILLE METH CH SPIRE            APPROX. 2.9 KM 0721052.7 |
 JV4325| JV4297 GLENMONT RM 3                       APPROX. 1.2 KM 2490922.3 |
 JV4325|---------------------------------------------------------------------|
 JV4325
 JV4325                          SUPERSEDED SURVEY CONTROL
 JV4325
 JV4325  NAD 83(1986)-  39 03 54.95027(N)    077 02 20.37738(W) AD(       ) 2
 JV4325  NAD 27      -  39 03 54.55835(N)    077 02 21.45680(W) AD(       ) 2
 JV4325  NGVD 29 (07/19/86)  139.4    (m)          457.     (f) VERT ANG       
 JV4325
 JV4325.Superseded values are not recommended for survey control.
 JV4325
 JV4325.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4325.See file dsdata.pdf to determine how the superseded data were derived.
 JV4325
 JV4325_MARKER: N = NAIL
 JV4325_SETTING: 0 = UNSPECIFIED SETTING
 JV4325_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4325
 JV4325  HISTORY     - Date     Condition        Report By
 JV4325  HISTORY     - 1969     MONUMENTED       WSSC
 JV4325
 JV4325                          STATION DESCRIPTION
 JV4325
 JV4325'DESCRIBED BY WASH SUBURB SAN COMM 1969
 JV4325'THE STATION IS ABOUT 1 MILE EAST OF GLENMONT AND 2 MILES
 JV4325'SOUTHWEST OF COLESVILLE AND ON THE ROOF OF JOHN F. KENNEDY HIGH
 JV4325'SCHOOL LOCATED AT 1901 RANDOLPH ROAD, GLENMONT.
 JV4325'
 JV4325'THE STATION MARK IS A PK NAIL FLUSH WITH THE ROOF AND IS 34.81
 JV4325'FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE RAISED SECTION,
 JV4325'33.06 FEET SOUTHEAST OF THE SOUTHWEST CORNER OF THE RAISED
 JV4325'SECTION, 3.91 FEET SOUTHWEST OF THE SOUTH CORNER OF THE BASE
 JV4325'OF THE METAL HATCH LEADING TO THE LADDER, AND 45.37 FEET EAST
 JV4325'OF THE SOUTHEAST CORNER OF THE BASE TO AN AIR VENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7538 ***********************************************************************
 HV7538  DESIGNATION -  17519 WSSC 1970
 HV7538  PID         -  HV7538
 HV7538  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7538  COUNTRY     -  US
 HV7538  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7538
 HV7538                         *CURRENT SURVEY CONTROL
 HV7538  ______________________________________________________________________
 HV7538* NAD 83(1993) POSITION- 38 50 47.10684(N) 076 50 25.33522(W)   ADJUSTED
 HV7538* NAVD 88 ORTHO HEIGHT -    80.6   (meters)      264.    (feet) VERTCON3
 HV7538  ______________________________________________________________________
 HV7538  GEOID HEIGHT    -        -32.578 (meters)                     GEOID18
 HV7538  LAPLACE CORR    -         -5.72  (seconds)                    DEFLEC18
 HV7538  HORZ ORDER      -  SECOND
 HV7538
 HV7538.The horizontal coordinates were established by classical geodetic methods
 HV7538.and adjusted by the National Geodetic Survey in November 1994.
 HV7538
 HV7538.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7538.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7538
 HV7538.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7538.GEOID18 height accuracy estimate available here.
 HV7538
 HV7538.Click photographs - Photos may exist for this station.
 HV7538
 HV7538.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7538
 HV7538. The following values were computed from the NAD 83(1993) position.
 HV7538
 HV7538;                    North         East     Units Scale Factor Converg.
 HV7538;SPC MD       -   130,969.476   413,857.239   MT  0.99994998   +0 06 00.7
 HV7538;SPC MD       -   429,689.02  1,357,796.62   sFT  0.99994998   +0 06 00.7
 HV7538;UTM  18      - 4,301,342.876   340,289.203   MT  0.99991410   -1 09 16.5
 HV7538
 HV7538!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7538!SPC MD       -   0.99999247  x   0.99994998  =   0.99994245
 HV7538!UTM  18      -   0.99999247  x   0.99991410  =   0.99990657
 HV7538
 HV7538:                Primary Azimuth Mark                     Grid Az
 HV7538:SPC MD       -  MELLWOOD 3 RM 6                          162 39 23.5
 HV7538:UTM  18      -  MELLWOOD 3 RM 6                          163 54 40.7
 HV7538
 HV7538_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4028901342(NAD 83)
 HV7538
 HV7538|---------------------------------------------------------------------|
 HV7538| PID    Reference Object                     Distance      Geod. Az  |
 HV7538|                                                           dddmmss.s |
 HV7538| HV7511 MELLWOOD 3 RM 6                     APPROX. 3.8 KM 1624524.2 |
 HV7538| HV7541 17412 WSSC 1970                     327.742 METERS 23559     |
 HV7538|---------------------------------------------------------------------|
 HV7538
 HV7538                          SUPERSEDED SURVEY CONTROL
 HV7538
 HV7538  NAD 83(1991)-  38 50 47.10630(N)    076 50 25.33557(W) AD(       ) 2
 HV7538  NAD 83(1986)-  38 50 47.10439(N)    076 50 25.34813(W) AD(       ) 2
 HV7538  NAD 27      -  38 50 46.69776(N)    076 50 26.45121(W) AD(       ) 2
 HV7538  NGVD 29 (07/19/86)   80.8    (m)          265.     (f) VERT ANG       
 HV7538
 HV7538.Superseded values are not recommended for survey control.
 HV7538
 HV7538.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7538.See file dsdata.pdf to determine how the superseded data were derived.
 HV7538
 HV7538_MARKER: I = METAL ROD
 HV7538_SETTING: 0 = UNSPECIFIED SETTING
 HV7538_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7538
 HV7538  HISTORY     - Date     Condition        Report By
 HV7538  HISTORY     - 1969     MONUMENTED       WSSC
 HV7538
 HV7538                          STATION DESCRIPTION
 HV7538
 HV7538'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7538'THE STATION IS LOCATED ABOUT 1.50 MILES NORTHEAST OF ROUTE 4
 HV7538'AND ROUTE 495 (CAPITAL BELTWAY), ON THE NORTH SIDE OF WESTPHALIA
 HV7538'ROAD.
 HV7538'
 HV7538'TO REACH THE STATION FROM THE INTERSECTION OF CASTLE DRIVE AND
 HV7538'WESTPHALIA ROAD, GO EAST ON WESTPHALIA ROAD FOR 200 FEET TO THE
 HV7538'STATION ON THE LEFT.
 HV7538'
 HV7538'THE STATION MARK IS AN IRON PIPE AND IS SET FLUSH WITH THE
 HV7538'SURFACE.  IT IS 30.50 FEET EAST OF THE NEAR CORNER OF A CONCRETE
 HV7538'HEADWALL AND 26.88 FEET SOUTH OF A NAIL IN THE LEFT SIDE OF
 HV7538'A 12-INCH OAK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7828 ***********************************************************************
 HV7828  DESIGNATION -  1752 WSSC
 HV7828  PID         -  HV7828
 HV7828  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7828  COUNTRY     -  US
 HV7828  USGS QUAD   -  LANHAM (2016)
 HV7828
 HV7828                         *CURRENT SURVEY CONTROL
 HV7828  ______________________________________________________________________
 HV7828* NAD 83(1986) POSITION- 38 55 01.     (N) 076 51 23.     (W)   SCALED
 HV7828* NAVD 88 ORTHO HEIGHT -    60.64  (+/-2cm)      198.9   (feet) VERTCON3
 HV7828  ______________________________________________________________________
 HV7828  GEOID HEIGHT    -        -32.432 (meters)                     GEOID18
 HV7828  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV7828
 HV7828.The horizontal coordinates were scaled from a map and have
 HV7828.an estimated accuracy of +/- 6 seconds.
 HV7828
 HV7828.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7828.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7828
 HV7828.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7828.GEOID18 height accuracy estimate available here.
 HV7828
 HV7828.The vertical order pertains to the NGVD 29 superseded value.
 HV7828
 HV7828.Click photographs - Photos may exist for this station.
 HV7828
 HV7828;                    North         East    Units  Estimated Accuracy
 HV7828;SPC MD       -   138,800.      412,450.      MT  (+/- 180 meters Scaled)
 HV7828
 HV7828_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ390091(NAD 83)
 HV7828
 HV7828                          SUPERSEDED SURVEY CONTROL
 HV7828
 HV7828  NGVD 29 (11/26/84)   60.886  (m)          199.76   (f) ADJUSTED    2 0
 HV7828
 HV7828.Superseded values are not recommended for survey control.
 HV7828
 HV7828.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7828.See file dsdata.pdf to determine how the superseded data were derived.
 HV7828
 HV7828_MARKER: DD = SURVEY DISK
 HV7828_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV7828_STAMPING: 1752
 HV7828_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7828
 HV7828  HISTORY     - Date     Condition        Report By
 HV7828  HISTORY     - UNK      MONUMENTED       WSSC
 HV7828
 HV7828                          STATION DESCRIPTION
 HV7828
 HV7828'DESCRIBED BY WASH SUBURB SAN COMM UNK
 HV7828'AT BRIGHTSEAT FROM BRIGHTSEAT.
 HV7828'ON THE OLD LANDOVER-MARLBORO PIKE, ON THE NORTH SIDE OF THE ROAD, IN
 HV7828'FRONT OF A HOUSE ON THE HOLMEAD FARM, 37 FEET SOUTHEAST OF THE
 HV7828'SOUTHWEST CORNER OF THE HOUSE, 35.9 FEET SOUTH OF THE SOUTHEAST
 HV7828'CORNER, AND 74.2 FEET SOUTHWEST OF THE WELL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7413 ***********************************************************************
 HV7413  DESIGNATION -  17520 WSSC 1970
 HV7413  PID         -  HV7413
 HV7413  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7413  COUNTRY     -  US
 HV7413  USGS QUAD   -  BRANDYWINE (2016)
 HV7413
 HV7413                         *CURRENT SURVEY CONTROL
 HV7413  ______________________________________________________________________
 HV7413* NAD 83(1993) POSITION- 38 43 52.13313(N) 076 51 20.16085(W)   ADJUSTED
 HV7413* NAVD 88 ORTHO HEIGHT -    65.6   (meters)      215.    (feet) VERTCON3
 HV7413  ______________________________________________________________________
 HV7413  GEOID HEIGHT    -        -32.785 (meters)                     GEOID18
 HV7413  LAPLACE CORR    -         -5.61  (seconds)                    DEFLEC18
 HV7413  HORZ ORDER      -  SECOND
 HV7413
 HV7413.The horizontal coordinates were established by classical geodetic methods
 HV7413.and adjusted by the National Geodetic Survey in November 1994.
 HV7413
 HV7413.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7413.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7413
 HV7413.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7413.GEOID18 height accuracy estimate available here.
 HV7413
 HV7413.Click photographs - Photos may exist for this station.
 HV7413
 HV7413.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7413
 HV7413. The following values were computed from the NAD 83(1993) position.
 HV7413
 HV7413;                    North         East     Units Scale Factor Converg.
 HV7413;SPC MD       -   118,171.572   412,555.437   MT  0.99995302   +0 05 26.3
 HV7413;SPC MD       -   387,701.23  1,353,525.63   sFT  0.99995302   +0 05 26.3
 HV7413;UTM  18      - 4,288,576.942   338,707.838   MT  0.99992036   -1 09 40.5
 HV7413
 HV7413!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7413!SPC MD       -   0.99999486  x   0.99995302  =   0.99994788
 HV7413!UTM  18      -   0.99999486  x   0.99992036  =   0.99991522
 HV7413
 HV7413:                Primary Azimuth Mark                     Grid Az
 HV7413:SPC MD       -  HARRIS                                   316 58 40.0
 HV7413:UTM  18      -  HARRIS                                   318 13 46.8
 HV7413
 HV7413_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3870788576(NAD 83)
 HV7413
 HV7413|---------------------------------------------------------------------|
 HV7413| PID    Reference Object                     Distance      Geod. Az  |
 HV7413|                                                           dddmmss.s |
 HV7413| HV7398 HARRIS                              APPROX. 2.1 KM 3170406.3 |
 HV7413|---------------------------------------------------------------------|
 HV7413
 HV7413                          SUPERSEDED SURVEY CONTROL
 HV7413
 HV7413  NAD 83(1991)-  38 43 52.13292(N)    076 51 20.16097(W) AD(       ) 2
 HV7413  NAD 83(1986)-  38 43 52.13092(N)    076 51 20.17530(W) AD(       ) 2
 HV7413  NAD 27      -  38 43 51.71665(N)    076 51 21.27918(W) AD(       ) 2
 HV7413  NGVD 29 (07/19/86)   65.8    (m)          216.     (f) VERT ANG       
 HV7413
 HV7413.Superseded values are not recommended for survey control.
 HV7413
 HV7413.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7413.See file dsdata.pdf to determine how the superseded data were derived.
 HV7413
 HV7413_MARKER: I = METAL ROD
 HV7413_SETTING: 0 = UNSPECIFIED SETTING
 HV7413_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7413
 HV7413  HISTORY     - Date     Condition        Report By
 HV7413  HISTORY     - 1969     MONUMENTED       WSSC
 HV7413
 HV7413                          STATION DESCRIPTION
 HV7413
 HV7413'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7413'THE STATION IS LOCATED ABOUT 2.50 MILES NORTH OF BRANDYWINE,
 HV7413'1.5 MILES WEST OF ROUTE 301.
 HV7413'
 HV7413'TO REACH THE STATION FROM THE INTERSECTION OF FRANK TIPPETT
 HV7413'ROAD AND SURRATTS ROAD, GO WEST ON SURRATTS ROAD FOR 1.40 MILES
 HV7413'TO A GRAVEL ROAD ON THE LEFT.  TURN LEFT AND GO .25 MILES ON
 HV7413'GRAVEL ROAD TO PEPCO TOWER NO. 1090-N ON THE LEFT.
 HV7413'
 HV7413'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7413'CENTER AND IS .3 FEET ABOVE THE SURFACE.  IT IS 24.78 FEET
 HV7413'SOUTHEAST OF THE NORTHWEST LEG, 27.31 FEET SOUTHWEST OF THE
 HV7413'NORTHEAST LEG, 15.25 FEET NORTHEAST OF THE SOUTHWEST LEG AND
 HV7413'19.14 FEET NORTHWEST OF THE SOUTHEAST LEG.  REFERENCES ARE X
 HV7413'CUTS IN ANGLE IRON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7416 ***********************************************************************
 HV7416  DESIGNATION -  17521 WSSC 1970
 HV7416  PID         -  HV7416
 HV7416  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7416  COUNTRY     -  US
 HV7416  USGS QUAD   -  BRANDYWINE (2016)
 HV7416
 HV7416                         *CURRENT SURVEY CONTROL
 HV7416  ______________________________________________________________________
 HV7416* NAD 83(1993) POSITION- 38 43 53.94670(N) 076 52 07.19586(W)   ADJUSTED
 HV7416* NAVD 88 ORTHO HEIGHT -    37.9   (meters)      124.    (feet) VERTCON3
 HV7416  ______________________________________________________________________
 HV7416  GEOID HEIGHT    -        -32.746 (meters)                     GEOID18
 HV7416  LAPLACE CORR    -         -5.56  (seconds)                    DEFLEC18
 HV7416  HORZ ORDER      -  SECOND
 HV7416
 HV7416.The horizontal coordinates were established by classical geodetic methods
 HV7416.and adjusted by the National Geodetic Survey in November 1994.
 HV7416
 HV7416.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7416.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7416
 HV7416.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7416.GEOID18 height accuracy estimate available here.
 HV7416
 HV7416.Click photographs - Photos may exist for this station.
 HV7416
 HV7416.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7416
 HV7416. The following values were computed from the NAD 83(1993) position.
 HV7416
 HV7416;                    North         East     Units Scale Factor Converg.
 HV7416;SPC MD       -   118,225.778   411,419.342   MT  0.99995300   +0 04 56.7
 HV7416;SPC MD       -   387,879.07  1,349,798.29   sFT  0.99995300   +0 04 56.7
 HV7416;UTM  18      - 4,288,655.953   337,573.234   MT  0.99992489   -1 10 09.9
 HV7416
 HV7416!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7416!SPC MD       -   0.99999920  x   0.99995300  =   0.99995220
 HV7416!UTM  18      -   0.99999920  x   0.99992489  =   0.99992409
 HV7416
 HV7416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3757388655(NAD 83)
 HV7416
 HV7416                          SUPERSEDED SURVEY CONTROL
 HV7416
 HV7416  NAD 83(1991)-  38 43 53.94643(N)    076 52 07.19598(W) AD(       ) 2
 HV7416  NAD 83(1986)-  38 43 53.94458(N)    076 52 07.21029(W) AD(       ) 2
 HV7416  NAD 27      -  38 43 53.53056(N)    076 52 08.31264(W) AD(       ) 2
 HV7416  NGVD 29 (07/19/86)   38.1    (m)          125.     (f) VERT ANG       
 HV7416
 HV7416.Superseded values are not recommended for survey control.
 HV7416
 HV7416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7416.See file dsdata.pdf to determine how the superseded data were derived.
 HV7416
 HV7416_MARKER: I = METAL ROD
 HV7416_SETTING: 0 = UNSPECIFIED SETTING
 HV7416_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7416
 HV7416  HISTORY     - Date     Condition        Report By
 HV7416  HISTORY     - 1969     MONUMENTED       WSSC
 HV7416
 HV7416                          STATION DESCRIPTION
 HV7416
 HV7416'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7416'THE STATION IS LOCATED 1.8 MILES NORTH OF T.B., 1.1 MILES
 HV7416'NORTHWEST OF ROUTE 301.
 HV7416'
 HV7416'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 381 AND
 HV7416'ROUTE 301, GO NORTH ON ROUTE 301 FOR 1.5 MILES TO DYSON
 HV7416'ROAD.  TURN LEFT ON DYSON ROAD AND GO .5 MILES TO LUSBY
 HV7416'LANE.  TURN RIGHT ON LUSBY LANE TO KNOLLWOOD PLACE, GO NORTH
 HV7416'ON KNOLLWOOD PLACE TO END.
 HV7416'
 HV7416'THE STATION MARK IS A CONCRETE MONUMENT WITH IRON ROD
 HV7416'CENTER AND IS SET FLUSH WITH THE SURFACE.  IT IS 9.72 FEET
 HV7416'SOUTHEAST OF A CABLE MARKER, 63.20 FEET NORTH OF THE
 HV7416'NORTHWEST CORNER OF A CONCRETE HEADWALL, 63.03 FEET NORTH OF THE
 HV7416'NORTHEAST CORNER OF A CONCRETE HEADWALL, 77.48 FEET NORTHWEST
 HV7416'OF THE NORTHWEST CORNER OF HOUSE NO. 11710, AND 95.58 FEET
 HV7416'NORTHWEST OF THE NORTHEAST CORNER OF THE SAME HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7407 ***********************************************************************
 HV7407  DESIGNATION -  17522 WSSC 1970
 HV7407  PID         -  HV7407
 HV7407  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7407  COUNTRY     -  US
 HV7407  USGS QUAD   -  BRANDYWINE (2016)
 HV7407
 HV7407                         *CURRENT SURVEY CONTROL
 HV7407  ______________________________________________________________________
 HV7407* NAD 83(1993) POSITION- 38 43 13.05967(N) 076 48 05.02881(W)   ADJUSTED
 HV7407* NAVD 88 ORTHO HEIGHT -    68.0   (meters)      223.    (feet) VERTCON3
 HV7407  ______________________________________________________________________
 HV7407  GEOID HEIGHT    -        -32.984 (meters)                     GEOID18
 HV7407  LAPLACE CORR    -         -6.20  (seconds)                    DEFLEC18
 HV7407  HORZ ORDER      -  SECOND
 HV7407
 HV7407.The horizontal coordinates were established by classical geodetic methods
 HV7407.and adjusted by the National Geodetic Survey in November 1994.
 HV7407
 HV7407.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7407.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7407
 HV7407.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7407.GEOID18 height accuracy estimate available here.
 HV7407
 HV7407.Click photographs - Photos may exist for this station.
 HV7407
 HV7407.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7407
 HV7407. The following values were computed from the NAD 83(1993) position.
 HV7407
 HV7407;                    North         East     Units Scale Factor Converg.
 HV7407;SPC MD       -   116,975.609   417,270.987   MT  0.99995351   +0 07 28.7
 HV7407;SPC MD       -   383,777.48  1,368,996.56   sFT  0.99995351   +0 07 28.7
 HV7407;UTM  18      - 4,287,278.304   343,395.938   MT  0.99990201   -1 07 37.3
 HV7407
 HV7407!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7407!SPC MD       -   0.99999451  x   0.99995351  =   0.99994802
 HV7407!UTM  18      -   0.99999451  x   0.99990201  =   0.99989652
 HV7407
 HV7407:                Primary Azimuth Mark                     Grid Az
 HV7407:SPC MD       -  W 36                                     090 44 48.8
 HV7407:UTM  18      -  W 36                                     091 59 54.8
 HV7407
 HV7407_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4339587278(NAD 83)
 HV7407
 HV7407|---------------------------------------------------------------------|
 HV7407| PID    Reference Object                     Distance      Geod. Az  |
 HV7407|                                                           dddmmss.s |
 HV7407| HV7405 17472 WSSC 1970                     220.356 METERS 06649     |
 HV7407| HV7379 W 36                                APPROX. 2.3 KM 0905217.5 |
 HV7407|---------------------------------------------------------------------|
 HV7407
 HV7407                          SUPERSEDED SURVEY CONTROL
 HV7407
 HV7407  NAD 83(1991)-  38 43 13.05963(N)    076 48 05.02906(W) AD(       ) 2
 HV7407  NAD 83(1986)-  38 43 13.05707(N)    076 48 05.04361(W) AD(       ) 2
 HV7407  NAD 27      -  38 43 12.64251(N)    076 48 06.15264(W) AD(       ) 2
 HV7407  NGVD 29 (07/19/86)   68.2    (m)          224.     (f) VERT ANG       
 HV7407
 HV7407.Superseded values are not recommended for survey control.
 HV7407
 HV7407.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7407.See file dsdata.pdf to determine how the superseded data were derived.
 HV7407
 HV7407_MARKER: I = METAL ROD
 HV7407_SETTING: 0 = UNSPECIFIED SETTING
 HV7407_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7407
 HV7407  HISTORY     - Date     Condition        Report By
 HV7407  HISTORY     - 1969     MONUMENTED       WSSC
 HV7407
 HV7407                          STATION DESCRIPTION
 HV7407
 HV7407'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7407'THE STATION IS LOCATED 600 FEET NORTHEAST OF CROSS ROAD AND
 HV7407'1.70 MILES EAST OF THE PENNSYLVANIA RAILROAD.
 HV7407'
 HV7407'TO REACH THE STATION FROM CROSS ROAD, GO NORTHEAST ON GRAVEL
 HV7407'ROAD LEADING TO BOND RESIDENCE FOR 600 FEET TO THE STATION ON
 HV7407'THE LEFT.
 HV7407'
 HV7407'THE STATION MARK IS AN IRON PIPE AND IS SET FLUSH WITH THE
 HV7407'SURFACE.  IT IS 14.84 FEET SOUTH OF A 3-INCH CEDAR, 68.46
 HV7407'FEET EAST OF THE CORNER OF A HOUSE AND 61.47 FEET EAST OF A
 HV7407'CORNER OF THE SAME HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7919 ***********************************************************************
 HV7919  DESIGNATION -  17530 WSSC 1970
 HV7919  PID         -  HV7919
 HV7919  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7919  COUNTRY     -  US
 HV7919  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7919
 HV7919                         *CURRENT SURVEY CONTROL
 HV7919  ______________________________________________________________________
 HV7919* NAD 83(1993) POSITION- 38 55 15.11941(N) 076 52 40.51940(W)   ADJUSTED
 HV7919* NAVD 88 ORTHO HEIGHT -    25.6   (meters)       84.    (feet) VERTCON3
 HV7919  ______________________________________________________________________
 HV7919  GEOID HEIGHT    -        -32.372 (meters)                     GEOID18
 HV7919  LAPLACE CORR    -         -4.83  (seconds)                    DEFLEC18
 HV7919  HORZ ORDER      -  SECOND
 HV7919
 HV7919.The horizontal coordinates were established by classical geodetic methods
 HV7919.and adjusted by the National Geodetic Survey in November 1994.
 HV7919
 HV7919.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7919.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7919
 HV7919.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7919.GEOID18 height accuracy estimate available here.
 HV7919
 HV7919.Click photographs - Photos may exist for this station.
 HV7919
 HV7919.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7919
 HV7919. The following values were computed from the NAD 83(1993) position.
 HV7919
 HV7919;                    North         East     Units Scale Factor Converg.
 HV7919;SPC MD       -   139,228.733   410,586.412   MT  0.99995016   +0 04 35.8
 HV7919;SPC MD       -   456,786.27  1,347,065.59   sFT  0.99995016   +0 04 35.8
 HV7919;UTM  18      - 4,309,671.582   337,200.253   MT  0.99992637   -1 10 48.2
 HV7919
 HV7919!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7919!SPC MD       -   1.00000107  x   0.99995016  =   0.99995123
 HV7919!UTM  18      -   1.00000107  x   0.99992637  =   0.99992744
 HV7919
 HV7919_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3720009671(NAD 83)
 HV7919
 HV7919                          SUPERSEDED SURVEY CONTROL
 HV7919
 HV7919  NAD 83(1991)-  38 55 15.11900(N)    076 52 40.51961(W) AD(       ) 2
 HV7919  NAD 83(1986)-  38 55 15.11739(N)    076 52 40.53134(W) AD(       ) 2
 HV7919  NAD 27      -  38 55 14.71663(N)    076 52 41.63021(W) AD(       ) 2
 HV7919  NGVD 29 (07/19/86)   25.8    (m)           85.     (f) VERT ANG       
 HV7919
 HV7919.Superseded values are not recommended for survey control.
 HV7919
 HV7919.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7919.See file dsdata.pdf to determine how the superseded data were derived.
 HV7919
 HV7919_MARKER: B = BOLT
 HV7919_SETTING: 0 = UNSPECIFIED SETTING
 HV7919_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7919
 HV7919  HISTORY     - Date     Condition        Report By
 HV7919  HISTORY     - 1969     MONUMENTED       WSSC
 HV7919
 HV7919                          STATION DESCRIPTION
 HV7919
 HV7919'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7919'THE STATION IS LOCATED IN PALMER PARK, IN THE CENTERLINE OF
 HV7919'GEORGE PALMER HIGHWAY (ROUTE 704).
 HV7919'
 HV7919'TO REACH THE STATION FROM THE INTERSECTION OF GREENLEAF ROAD
 HV7919'AND GEORGE PALMER HIGHWAY, GO NORTHEAST ON GEORGE PALMER HIGHWAY
 HV7919'FOR 50 FEET TO THE STATION ON THE LEFT.
 HV7919'
 HV7919'THE STATION MARK IS A BRASS BOLT IN THE CENTER OF A CONCRETE
 HV7919'ISLAND AT THE SOUTH END OF THE ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7358 ***********************************************************************
 HV7358  DESIGNATION -  17531 WSSC 1970
 HV7358  PID         -  HV7358
 HV7358  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7358  COUNTRY     -  US
 HV7358  USGS QUAD   -  BENEDICT (2016)
 HV7358
 HV7358                         *CURRENT SURVEY CONTROL
 HV7358  ______________________________________________________________________
 HV7358* NAD 83(1993) POSITION- 38 34 15.19006(N) 076 43 27.02395(W)   ADJUSTED
 HV7358* NAVD 88 ORTHO HEIGHT -    53.8   (meters)      177.    (feet) VERTCON3
 HV7358  ______________________________________________________________________
 HV7358  GEOID HEIGHT    -        -33.496 (meters)                     GEOID18
 HV7358  LAPLACE CORR    -         -3.35  (seconds)                    DEFLEC18
 HV7358  HORZ ORDER      -  SECOND
 HV7358
 HV7358.The horizontal coordinates were established by classical geodetic methods
 HV7358.and adjusted by the National Geodetic Survey in November 1994.
 HV7358
 HV7358.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7358.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7358
 HV7358.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7358.GEOID18 height accuracy estimate available here.
 HV7358
 HV7358.Click photographs - Photos may exist for this station.
 HV7358
 HV7358.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7358
 HV7358. The following values were computed from the NAD 83(1993) position.
 HV7358
 HV7358;                    North         East     Units Scale Factor Converg.
 HV7358;SPC MD       -   100,408.212   424,036.621   MT  0.99996393   +0 10 23.2
 HV7358;SPC MD       -   329,422.61  1,391,193.48   sFT  0.99996393   +0 10 23.2
 HV7358;UTM  18      - 4,270,568.403   349,798.117   MT  0.99987783   -1 04 30.7
 HV7358
 HV7358!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7358!SPC MD       -   0.99999681  x   0.99996393  =   0.99996074
 HV7358!UTM  18      -   0.99999681  x   0.99987783  =   0.99987464
 HV7358
 HV7358:                Primary Azimuth Mark                     Grid Az
 HV7358:SPC MD       -  AQUASCO                                  012 14 57.6
 HV7358:UTM  18      -  AQUASCO                                  013 29 51.5
 HV7358
 HV7358_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4979870568(NAD 83)
 HV7358
 HV7358|---------------------------------------------------------------------|
 HV7358| PID    Reference Object                     Distance      Geod. Az  |
 HV7358|                                                           dddmmss.s |
 HV7358| HV7351 AQUASCO                             APPROX. 0.8 KM 0122520.8 |
 HV7358| HV7357 17345 WSSC 1970                     170.364 METERS 01423     |
 HV7358|---------------------------------------------------------------------|
 HV7358
 HV7358                          SUPERSEDED SURVEY CONTROL
 HV7358
 HV7358  NAD 83(1991)-  38 34 15.19007(N)    076 43 27.02516(W) AD(       ) 2
 HV7358  NAD 83(1986)-  38 34 15.18889(N)    076 43 27.03972(W) AD(       ) 2
 HV7358  NAD 27      -  38 34 14.75723(N)    076 43 28.16709(W) AD(       ) 2
 HV7358  NGVD 29 (07/19/86)   54.1    (m)          177.     (f) VERT ANG       
 HV7358
 HV7358.Superseded values are not recommended for survey control.
 HV7358
 HV7358.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7358.See file dsdata.pdf to determine how the superseded data were derived.
 HV7358
 HV7358_MARKER: I = METAL ROD
 HV7358_SETTING: 0 = UNSPECIFIED SETTING
 HV7358_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7358
 HV7358  HISTORY     - Date     Condition        Report By
 HV7358  HISTORY     - 1969     MONUMENTED       WSSC
 HV7358
 HV7358                          STATION DESCRIPTION
 HV7358
 HV7358'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7358'THE STATION IS LOCATED SOUTH OF AQUASCO AND 1.25 MILES NORTHEAST
 HV7358'OF THE PRINCE GEORGES AND CHARLES COUNTY LINES.  IT IS ON THE EAST
 HV7358'SIDE OF ROUTE 381 AND .1 MILE SOUTHWEST OF JOHN WESLEY CHURCH ROAD.
 HV7358'
 HV7358'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 223 AND ROUTE
 HV7358'381, GO SOUTH ON ROUTE 381 FOR 1.0 MILE TO THE STATION ON THE LEFT.
 HV7358'
 HV7358'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD CENTER
 HV7358'AND IS .5 FEET ABOVE THE SURFACE.  IT IS 40.08 FEET NORTHEAST OF A
 HV7358'POLE, AND 19.38 FEET WEST OF A 4-INCH TWIN POPLAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2335 ***********************************************************************
 HV2335  DESIGNATION -  1754
 HV2335  PID         -  HV2335
 HV2335  STATE/COUNTY-  MD/MONTGOMERY
 HV2335  COUNTRY     -  US
 HV2335  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2335
 HV2335                         *CURRENT SURVEY CONTROL
 HV2335  ______________________________________________________________________
 HV2335* NAD 83(1986) POSITION- 38 59 17.64   (N) 077 00 44.82   (W)   HD_HELD1
 HV2335* NAVD 88 ORTHO HEIGHT -    88.800 (meters)      291.34  (feet) ADJUSTED
 HV2335  ______________________________________________________________________
 HV2335  GEOID HEIGHT    -        -31.997 (meters)                     GEOID18
 HV2335  DYNAMIC HEIGHT  -         88.752 (meters)      291.18  (feet) COMP
 HV2335  MODELED GRAVITY -    980,088.3   (mgal)                       NAVD 88
 HV2335
 HV2335  VERT ORDER      -  SECOND    CLASS 0
 HV2335
 HV2335.The horizontal coordinates were determined by differentially corrected
 HV2335.hand held GPS observations or other comparable positioning techniques
 HV2335.and have an estimated accuracy of +/- 3 meters.
 HV2335
 HV2335.The orthometric height was determined by differential leveling and
 HV2335.adjusted by the NATIONAL GEODETIC SURVEY
 HV2335.in June 1991.
 HV2335
 HV2335.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2335.GEOID18 height accuracy estimate available here.
 HV2335
 HV2335.Click photographs - Photos may exist for this station.
 HV2335
 HV2335.The dynamic height is computed by dividing the NAVD 88
 HV2335.geopotential number by the normal gravity value computed on the
 HV2335.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2335.degrees latitude (g = 980.6199 gals.).
 HV2335
 HV2335.The modeled gravity was interpolated from observed gravity values.
 HV2335
 HV2335;                    North         East    Units  Estimated Accuracy
 HV2335;SPC MD       -   146,700.1     398,921.4     MT  (+/- 3 meters HH1 GPS) 
 HV2335
 HV2335_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2570217397(NAD 83)
 HV2335
 HV2335                          SUPERSEDED SURVEY CONTROL
 HV2335
 HV2335  NGVD 29 (11/26/84)   89.013  (m)          292.04   (f) ADJUSTED    2 0
 HV2335
 HV2335.Superseded values are not recommended for survey control.
 HV2335
 HV2335.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2335.See file dsdata.pdf to determine how the superseded data were derived.
 HV2335
 HV2335_MARKER: DD = SURVEY DISK
 HV2335_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV2335_SP_SET: RETAINING WALL
 HV2335_STAMPING: 1754
 HV2335_MARK LOGO: WSSC
 HV2335_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2335+STABILITY: SURFACE MOTION
 HV2335_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2335+SATELLITE: SATELLITE OBSERVATIONS - July 29, 2014
 HV2335
 HV2335  HISTORY     - Date     Condition        Report By
 HV2335  HISTORY     - UNK      MONUMENTED       WSSC
 HV2335  HISTORY     - 1951     GOOD             CGS
 HV2335  HISTORY     - 20040320 GOOD             GEOCAC
 HV2335  HISTORY     - 20130104 GOOD             GEOCAC
 HV2335  HISTORY     - 20140729 GOOD             INDIV
 HV2335
 HV2335                          STATION DESCRIPTION
 HV2335
 HV2335'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2335'AT SILVER SPRING.
 HV2335'IN SILVER SPRING, MONTGOMERY COUNTY, AT THE INTERSECTION OF
 HV2335'PINEY BRANCH ROAD AND RITCHIE AVENUE, IN THE NORTH ANGLE OF
 HV2335'THE INTERSECTION, ON THE TOP OF A CONCRETE RETAINING WALL, AND
 HV2335'2 FEET NORTHWEST OF THE SOUTHEAST END OF THE WALL.  A WASHINGTON
 HV2335'SUBURBAN SANITARY DISTRICT BRONZE DISK, STAMPED 1754.
 HV2335
 HV2335                          STATION RECOVERY (2004)
 HV2335
 HV2335'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV2335'STATION LOCATED AS DESCRIBED AND APPROXIMATELY 6 FEET NORTHEAST OF A
 HV2335'FIRE HYDRANT AND APPROXIMATELY 9.5 FEET NORTHWEST OF PEPCO POLE
 HV2335'796420-3753.
 HV2335
 HV2335                          STATION RECOVERY (2013)
 HV2335
 HV2335'RECOVERY NOTE BY GEOCACHING 2013 (APC)
 HV2335'RECOVERED IN GOOD CONDITION.
 HV2335
 HV2335                          STATION RECOVERY (2014)
 HV2335
 HV2335'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 HV2335'RECOVERED AS DESCRIBED,DESCRIPTION IS ADEQUATE. THIS IS ALSO A WSSC
 HV2335'BENCHMARK (1754) THAT IS PAINTED AND VISIBLE ON THE TOP OF THE WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7443 ***********************************************************************
 HV7443  DESIGNATION -  17540 WSSC 1970
 HV7443  PID         -  HV7443
 HV7443  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7443  COUNTRY     -  US
 HV7443  USGS QUAD   -  PISCATAWAY (2016)
 HV7443
 HV7443                         *CURRENT SURVEY CONTROL
 HV7443  ______________________________________________________________________
 HV7443* NAD 83(1993) POSITION- 38 43 47.30891(N) 076 55 19.08114(W)   ADJUSTED
 HV7443* NAVD 88 ORTHO HEIGHT -    65.7   (meters)      216.    (feet) VERTCON3
 HV7443  ______________________________________________________________________
 HV7443  GEOID HEIGHT    -        -32.601 (meters)                     GEOID18
 HV7443  LAPLACE CORR    -         -4.90  (seconds)                    DEFLEC18
 HV7443  HORZ ORDER      -  SECOND
 HV7443
 HV7443.The horizontal coordinates were established by classical geodetic methods
 HV7443.and adjusted by the National Geodetic Survey in November 1994.
 HV7443
 HV7443.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7443.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7443
 HV7443.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7443.GEOID18 height accuracy estimate available here.
 HV7443
 HV7443.Click photographs - Photos may exist for this station.
 HV7443
 HV7443.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7443
 HV7443. The following values were computed from the NAD 83(1993) position.
 HV7443
 HV7443;                    North         East     Units Scale Factor Converg.
 HV7443;SPC MD       -   118,015.789   406,785.034   MT  0.99995308   +0 02 56.3
 HV7443;SPC MD       -   387,190.13  1,334,593.90   sFT  0.99995308   +0 02 56.3
 HV7443;UTM  18      - 4,288,547.258   332,935.531   MT  0.99994371   -1 12 09.9
 HV7443
 HV7443!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7443!SPC MD       -   0.99999481  x   0.99995308  =   0.99994789
 HV7443!UTM  18      -   0.99999481  x   0.99994371  =   0.99993852
 HV7443
 HV7443:                Primary Azimuth Mark                     Grid Az
 HV7443:SPC MD       -  HYDE                                     329 17 11.4
 HV7443:UTM  18      -  HYDE                                     330 32 17.6
 HV7443
 HV7443_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3293588547(NAD 83)
 HV7443
 HV7443|---------------------------------------------------------------------|
 HV7443| PID    Reference Object                     Distance      Geod. Az  |
 HV7443|                                                           dddmmss.s |
 HV7443| HV7442 17541 WSSC 1970                     176.700 METERS 12729     |
 HV7443| HV7429 HYDE                                APPROX. 1.2 KM 3292007.7 |
 HV7443|---------------------------------------------------------------------|
 HV7443
 HV7443                          SUPERSEDED SURVEY CONTROL
 HV7443
 HV7443  NAD 83(1991)-  38 43 47.30811(N)    076 55 19.08162(W) AD(       ) 2
 HV7443  NAD 83(1986)-  38 43 47.30713(N)    076 55 19.09537(W) AD(       ) 2
 HV7443  NAD 27      -  38 43 46.89354(N)    076 55 20.19133(W) AD(       ) 2
 HV7443  NGVD 29 (07/19/86)   65.9    (m)          216.     (f) VERT ANG       
 HV7443
 HV7443.Superseded values are not recommended for survey control.
 HV7443
 HV7443.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7443.See file dsdata.pdf to determine how the superseded data were derived.
 HV7443
 HV7443_MARKER: I = METAL ROD
 HV7443_SETTING: 0 = UNSPECIFIED SETTING
 HV7443_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7443
 HV7443  HISTORY     - Date     Condition        Report By
 HV7443  HISTORY     - 1969     MONUMENTED       WSSC
 HV7443
 HV7443                          STATION DESCRIPTION
 HV7443
 HV7443'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7443'THE STATION IS LOCATED ABOUT 1.40 MILES SOUTHEAST OF ROUTE 223
 HV7443'(PISCATAWAY ROAD) AND HYDE FIELD, ON THE SOUTHEAST CORNER OF
 HV7443'TIPPETT ROAD AND THRIFT ROAD.
 HV7443'
 HV7443'TO REACH THE STATION FROM ROUTE 223, GO SOUTHEAST ON TIPPETT
 HV7443'ROAD FOR 1.3 MILES TO THE STATION ON THE RIGHT.
 HV7443'
 HV7443'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7443'CENTER AND IS SET FLUSH WITH THE SURFACE.  IT IS 10.58 FEET
 HV7443'WEST OF POLE NO. 846347, 91.84 FEET NORTHWEST OF A 20-INCH
 HV7443'BIRCH, 79.62 FEET WEST OF A 12-INCH LOCUST, AND 64.12 FEET WEST
 HV7443'OF A PEPCO POLE NO. 835466.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7442 ***********************************************************************
 HV7442  DESIGNATION -  17541 WSSC 1970
 HV7442  PID         -  HV7442
 HV7442  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7442  COUNTRY     -  US
 HV7442  USGS QUAD   -  PISCATAWAY (2016)
 HV7442
 HV7442                         *CURRENT SURVEY CONTROL
 HV7442  ______________________________________________________________________
 HV7442* NAD 83(1993) POSITION- 38 43 43.82181(N) 076 55 13.27615(W)   ADJUSTED
 HV7442* NAVD 88 ORTHO HEIGHT -    64.9   (meters)      213.    (feet) VERTCON3
 HV7442  ______________________________________________________________________
 HV7442  GEOID HEIGHT    -        -32.608 (meters)                     GEOID18
 HV7442  LAPLACE CORR    -         -4.93  (seconds)                    DEFLEC18
 HV7442  HORZ ORDER      -  SECOND
 HV7442
 HV7442.The horizontal coordinates were established by classical geodetic methods
 HV7442.and adjusted by the National Geodetic Survey in November 1994.
 HV7442
 HV7442.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7442.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7442
 HV7442.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7442.GEOID18 height accuracy estimate available here.
 HV7442
 HV7442.Click photographs - Photos may exist for this station.
 HV7442
 HV7442.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7442
 HV7442. The following values were computed from the NAD 83(1993) position.
 HV7442
 HV7442;                    North         East     Units Scale Factor Converg.
 HV7442;SPC MD       -   117,908.386   406,925.335   MT  0.99995312   +0 02 60.0
 HV7442;SPC MD       -   386,837.76  1,335,054.20   sFT  0.99995312   +0 02 60.0
 HV7442;UTM  18      - 4,288,436.817   333,073.451   MT  0.99994314   -1 12 06.2
 HV7442
 HV7442!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7442!SPC MD       -   0.99999494  x   0.99995312  =   0.99994806
 HV7442!UTM  18      -   0.99999494  x   0.99994314  =   0.99993808
 HV7442
 HV7442_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3307388436(NAD 83)
 HV7442
 HV7442                          SUPERSEDED SURVEY CONTROL
 HV7442
 HV7442  NAD 83(1991)-  38 43 43.82103(N)    076 55 13.27662(W) AD(       ) 2
 HV7442  NAD 83(1986)-  38 43 43.82002(N)    076 55 13.29039(W) AD(       ) 2
 HV7442  NAD 27      -  38 43 43.40635(N)    076 55 14.38656(W) AD(       ) 2
 HV7442  NGVD 29 (07/19/86)   65.1    (m)          214.     (f) VERT ANG       
 HV7442
 HV7442.Superseded values are not recommended for survey control.
 HV7442
 HV7442.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7442.See file dsdata.pdf to determine how the superseded data were derived.
 HV7442
 HV7442_MARKER: I = METAL ROD
 HV7442_SETTING: 0 = UNSPECIFIED SETTING
 HV7442_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7442
 HV7442  HISTORY     - Date     Condition        Report By
 HV7442  HISTORY     - 1969     MONUMENTED       WSSC
 HV7442
 HV7442                          STATION DESCRIPTION
 HV7442
 HV7442'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7442'THE STATION IS LOCATED ABOUT 1.50 MILES SOUTHEAST OF ROUTE 223
 HV7442'(PISCATAWAY ROAD) AND HYDE FIELD, ON THE SOUTH SIDE OF TIPPETT ROAD.
 HV7442'
 HV7442'TO REACH THE STATION FROM THE INTERSECTION OF THRIFT ROAD AND
 HV7442'TIPPETT ROAD, GO SOUTHWEST ON TIPPETT ROAD FOR .10 MILES TO
 HV7442'THE STATION ON THE RIGHT.
 HV7442'
 HV7442'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV7442'CENTER AND IS .5 FEET BELOW THE SURFACE.  IT IS 60.73 FEET
 HV7442'SOUTH OF A 24-INCH LOCUST, 30.24 FEET NORTHWEST OF A 16-INCH
 HV7442'LOCUST, 16.11 FEET NORTH OF A FIRE HYDRANT, AND 8.40 FEET
 HV7442'NORTHWEST OF A VALVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4988 ***********************************************************************
 HV4988  DESIGNATION -  17542 WSSC 1970
 HV4988  PID         -  HV4988
 HV4988  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4988  COUNTRY     -  US
 HV4988  USGS QUAD   -  MOUNT VERNON (2019)
 HV4988
 HV4988                         *CURRENT SURVEY CONTROL
 HV4988  ______________________________________________________________________
 HV4988* NAD 83(1993) POSITION- 38 41 09.61411(N) 077 01 58.36113(W)   ADJUSTED
 HV4988* NAVD 88 ORTHO HEIGHT -    53.9   (meters)      177.    (feet) VERTCON3
 HV4988  ______________________________________________________________________
 HV4988  GEOID HEIGHT    -        -32.482 (meters)                     GEOID18
 HV4988  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 HV4988  HORZ ORDER      -  SECOND
 HV4988
 HV4988.The horizontal coordinates were established by classical geodetic methods
 HV4988.and adjusted by the National Geodetic Survey in November 1994.
 HV4988
 HV4988.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4988.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4988
 HV4988.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4988.GEOID18 height accuracy estimate available here.
 HV4988
 HV4988.Click photographs - Photos may exist for this station.
 HV4988
 HV4988.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4988
 HV4988. The following values were computed from the NAD 83(1993) position.
 HV4988
 HV4988;                    North         East     Units Scale Factor Converg.
 HV4988;SPC MD       -   113,150.936   397,139.472   MT  0.99995531   -0 01 14.3
 HV4988;SPC MD       -   371,229.36  1,302,948.42   sFT  0.99995531   -0 01 14.3
 HV4988;UTM  18      - 4,283,894.112   323,185.955   MT  0.99998500   -1 16 15.5
 HV4988
 HV4988!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4988!SPC MD       -   0.99999663  x   0.99995531  =   0.99995194
 HV4988!UTM  18      -   0.99999663  x   0.99998500  =   0.99998163
 HV4988
 HV4988_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2318583894(NAD 83)
 HV4988
 HV4988                          SUPERSEDED SURVEY CONTROL
 HV4988
 HV4988  NAD 83(1991)-  38 41 09.61259(N)    077 01 58.36227(W) AD(       ) 2
 HV4988  NAD 83(1986)-  38 41 09.61303(N)    077 01 58.37576(W) AD(       ) 2
 HV4988  NAD 27      -  38 41 09.19832(N)    077 01 59.46111(W) AD(       ) 2
 HV4988  NGVD 29 (07/19/86)   54.2    (m)          178.     (f) VERT ANG       
 HV4988
 HV4988.Superseded values are not recommended for survey control.
 HV4988
 HV4988.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4988.See file dsdata.pdf to determine how the superseded data were derived.
 HV4988
 HV4988_MARKER: I = METAL ROD
 HV4988_SETTING: 0 = UNSPECIFIED SETTING
 HV4988_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4988
 HV4988  HISTORY     - Date     Condition        Report By
 HV4988  HISTORY     - 1969     MONUMENTED       WSSC
 HV4988
 HV4988                          STATION DESCRIPTION
 HV4988
 HV4988'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4988'THE STATION IS LOCATED .7 MILE SOUTHEAST OF PISCATAWAY CREEK,
 HV4988'1.5 MILE NORTHWEST OF INDIAN HEAD HIGHWAY (ROUTE 210).
 HV4988'
 HV4988'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 210 AND
 HV4988'BRYAN POINT ROAD, GO NORTHWEST ON BRYAN POINT ROAD FOR 1.1 MILE
 HV4988'TO APPLE VALLEY ROAD.  PROCEED NORTHWEST ON BRYAN POINT ROAD FOR
 HV4988'.5 MILES TO THE ENTRANCE TO THE SMITH FARM ON THE RIGHT.  GO
 HV4988'NORTH ON FARM ROAD TO A GROUP OF THREE BARNS.
 HV4988'
 HV4988'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV4988'CENTER AND IS SET FLUSH WITH THE SURFACE.  IT IS 1.94 FEET
 HV4988'SOUTHWEST OF THE SOUTHWEST CORNER OF THE BARN NEAREST TO
 HV4988'BRYAN POINT ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4992 ***********************************************************************
 HV4992  DESIGNATION -  17543 WSSC 1970
 HV4992  PID         -  HV4992
 HV4992  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4992  COUNTRY     -  US
 HV4992  USGS QUAD   -  MOUNT VERNON (2019)
 HV4992
 HV4992                         *CURRENT SURVEY CONTROL
 HV4992  ______________________________________________________________________
 HV4992* NAD 83(1993) POSITION- 38 40 40.18662(N) 077 03 56.47685(W)   ADJUSTED
 HV4992* NAVD 88 ORTHO HEIGHT -    52.1   (meters)      171.    (feet) VERTCON3
 HV4992  ______________________________________________________________________
 HV4992  GEOID HEIGHT    -        -32.458 (meters)                     GEOID18
 HV4992  LAPLACE CORR    -         -1.84  (seconds)                    DEFLEC18
 HV4992  HORZ ORDER      -  SECOND
 HV4992
 HV4992.The horizontal coordinates were established by classical geodetic methods
 HV4992.and adjusted by the National Geodetic Survey in November 1994.
 HV4992
 HV4992.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4992.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4992
 HV4992.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4992.GEOID18 height accuracy estimate available here.
 HV4992
 HV4992.Click photographs - Photos may exist for this station.
 HV4992
 HV4992.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4992
 HV4992. The following values were computed from the NAD 83(1993) position.
 HV4992
 HV4992;                    North         East     Units Scale Factor Converg.
 HV4992;SPC MD       -   112,245.093   394,284.222   MT  0.99995579   -0 02 28.4
 HV4992;SPC MD       -   368,257.44  1,293,580.82   sFT  0.99995579   -0 02 28.4
 HV4992;UTM  18      - 4,283,050.751   320,311.518   MT  0.99999762   -1 17 28.6
 HV4992
 HV4992!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4992!SPC MD       -   0.99999691  x   0.99995579  =   0.99995270
 HV4992!UTM  18      -   0.99999691  x   0.99999762  =   0.99999453
 HV4992
 HV4992_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2031183050(NAD 83)
 HV4992
 HV4992                          SUPERSEDED SURVEY CONTROL
 HV4992
 HV4992  NAD 83(1991)-  38 40 40.18480(N)    077 03 56.47842(W) AD(       ) 2
 HV4992  NAD 83(1986)-  38 40 40.18595(N)    077 03 56.49123(W) AD(       ) 2
 HV4992  NAD 27      -  38 40 39.77100(N)    077 03 57.57270(W) AD(       ) 2
 HV4992  NGVD 29 (07/19/86)   52.4    (m)          172.     (f) VERT ANG       
 HV4992
 HV4992.Superseded values are not recommended for survey control.
 HV4992
 HV4992.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4992.See file dsdata.pdf to determine how the superseded data were derived.
 HV4992
 HV4992_MARKER: DD = SURVEY DISK
 HV4992_SETTING: 0 = UNSPECIFIED SETTING
 HV4992_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4992
 HV4992  HISTORY     - Date     Condition        Report By
 HV4992  HISTORY     - 1969     MONUMENTED       WSSC
 HV4992
 HV4992                          STATION DESCRIPTION
 HV4992
 HV4992'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4992'THE STATION IS LOCATED .8 MILES SOUTHWEST OF BRYAN POINT, .5
 HV4992'MILES SOUTHEAST OF THE POTOMAC RIVER ON OLD MARSHALL HALL ROAD.
 HV4992'
 HV4992'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 210 (INDIAN
 HV4992'HEAD HIGHWAY) AND ACCOKEEK ROAD, GO WEST ON ACCOKEEK ROAD FOR
 HV4992'2.2 MILES TO THE INTERSECTION OF OLD MARSHALL HALL ROAD.  TURN
 HV4992'RIGHT ON OLD MARSHALL HALL ROAD FOR 1.0 MILE TO NEW MARSHALL
 HV4992'HALL ROAD.  CONTINUE ON OLD MARSHALL HALL ROAD FOR 1.35 MILES
 HV4992'TO THE STATION ON THE LEFT.
 HV4992'
 HV4992'THE STATION MARK IS A CONCRETE MONUMENT WITH A BRASS DISK
 HV4992'STAMPED GARNER AZ MK 1970.  IT IS 50 FEET WEST OF OLD MARSHALL
 HV4992'HALL ROAD, 40.69 FEET WEST OF C AND P POLE NO. 51, 24.20 FEET
 HV4992'WEST OF THE END OF A WIRE FENCE AND 2.04 FEET NORTHWEST OF THE
 HV4992'FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4991 ***********************************************************************
 HV4991  DESIGNATION -  17544 WSSC 1970
 HV4991  PID         -  HV4991
 HV4991  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4991  COUNTRY     -  US
 HV4991  USGS QUAD   -  MOUNT VERNON (2019)
 HV4991
 HV4991                         *CURRENT SURVEY CONTROL
 HV4991  ______________________________________________________________________
 HV4991* NAD 83(1993) POSITION- 38 40 44.18427(N) 077 03 47.09108(W)   ADJUSTED
 HV4991* NAVD 88 ORTHO HEIGHT -    50.3   (meters)      165.    (feet) VERTCON3
 HV4991  ______________________________________________________________________
 HV4991  GEOID HEIGHT    -        -32.459 (meters)                     GEOID18
 HV4991  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 HV4991  HORZ ORDER      -  SECOND
 HV4991
 HV4991.The horizontal coordinates were established by classical geodetic methods
 HV4991.and adjusted by the National Geodetic Survey in November 1994.
 HV4991
 HV4991.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4991.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4991
 HV4991.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4991.GEOID18 height accuracy estimate available here.
 HV4991
 HV4991.Click photographs - Photos may exist for this station.
 HV4991
 HV4991.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4991
 HV4991. The following values were computed from the NAD 83(1993) position.
 HV4991
 HV4991;                    North         East     Units Scale Factor Converg.
 HV4991;SPC MD       -   112,368.199   394,511.167   MT  0.99995572   -0 02 22.5
 HV4991;SPC MD       -   368,661.33  1,294,325.39   sFT  0.99995572   -0 02 22.5
 HV4991;UTM  18      - 4,283,168.882   320,541.104   MT  0.99999660   -1 17 22.8
 HV4991
 HV4991!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4991!SPC MD       -   0.99999720  x   0.99995572  =   0.99995292
 HV4991!UTM  18      -   0.99999720  x   0.99999660  =   0.99999380
 HV4991
 HV4991_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2054183168(NAD 83)
 HV4991
 HV4991                          SUPERSEDED SURVEY CONTROL
 HV4991
 HV4991  NAD 83(1991)-  38 40 44.18249(N)    077 03 47.09267(W) AD(       ) 2
 HV4991  NAD 83(1986)-  38 40 44.18360(N)    077 03 47.10545(W) AD(       ) 2
 HV4991  NAD 27      -  38 40 43.76867(N)    077 03 48.18719(W) AD(       ) 2
 HV4991  NGVD 29 (07/19/86)   50.6    (m)          166.     (f) VERT ANG       
 HV4991
 HV4991.Superseded values are not recommended for survey control.
 HV4991
 HV4991.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4991.See file dsdata.pdf to determine how the superseded data were derived.
 HV4991
 HV4991_MARKER: I = METAL ROD
 HV4991_SETTING: 0 = UNSPECIFIED SETTING
 HV4991_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4991
 HV4991  HISTORY     - Date     Condition        Report By
 HV4991  HISTORY     - 1969     MONUMENTED       WSSC
 HV4991
 HV4991                          STATION DESCRIPTION
 HV4991
 HV4991'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4991'THE STATION IS LOCATED 1.0 MILE SOUTHWEST OF BRYAN POINT AND
 HV4991'.5 MILES SOUTHEAST OF THE POTOMAC RIVER ON OLD MARSHALL HALL ROAD.
 HV4991'
 HV4991'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 210 (INDIAN
 HV4991'HEAD HIGHWAY) AND ACCOKEEK ROAD, GO WEST ON ACCOKEEK ROAD FOR
 HV4991'2.2 MILES TO THE INTERSECTION OF OLD MARSHALL HALL ROAD.  TURN
 HV4991'RIGHT ON OLD MARSHALL HALL ROAD AND GO 1.0 MILE TO NEW MARSHALL
 HV4991'HALL ROAD, AND CONTINUE FOR 1.20 MILES NORTH TO THE STATION
 HV4991'ON THE LEFT.
 HV4991'
 HV4991'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV4991'CENTER AND IS SET FLUSH WITH THE SURFACE.  IT IS 19.71 FEET
 HV4991'WEST OF THE CENTERLINE OF OLD MARSHALL HALL ROAD, 63.40 FEET
 HV4991'SOUTH OF C AND P POLE NO. 49, 75.80 FEET NORTH OF A 6-INCH GUM,
 HV4991'39.06 FEET NORTHWEST OF A 12-INCH OAK, AND 34.75 FEET SOUTHEAST
 HV4991'OF A TELEPHONE CABLE MARKER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4990 ***********************************************************************
 HV4990  DESIGNATION -  17545 WSSC 1970
 HV4990  PID         -  HV4990
 HV4990  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4990  COUNTRY     -  US
 HV4990  USGS QUAD   -  MOUNT VERNON (2019)
 HV4990
 HV4990                         *CURRENT SURVEY CONTROL
 HV4990  ______________________________________________________________________
 HV4990* NAD 83(1993) POSITION- 38 40 39.94479(N) 077 03 40.81655(W)   ADJUSTED
 HV4990* NAVD 88 ORTHO HEIGHT -    50.7   (meters)      166.    (feet) VERTCON3
 HV4990  ______________________________________________________________________
 HV4990  GEOID HEIGHT    -        -32.463 (meters)                     GEOID18
 HV4990  LAPLACE CORR    -         -1.96  (seconds)                    DEFLEC18
 HV4990  HORZ ORDER      -  SECOND
 HV4990
 HV4990.The horizontal coordinates were established by classical geodetic methods
 HV4990.and adjusted by the National Geodetic Survey in November 1994.
 HV4990
 HV4990.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4990.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4990
 HV4990.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4990.GEOID18 height accuracy estimate available here.
 HV4990
 HV4990.Click photographs - Photos may exist for this station.
 HV4990
 HV4990.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4990
 HV4990. The following values were computed from the NAD 83(1993) position.
 HV4990
 HV4990;                    North         East     Units Scale Factor Converg.
 HV4990;SPC MD       -   112,237.373   394,662.735   MT  0.99995579   -0 02 18.6
 HV4990;SPC MD       -   368,232.11  1,294,822.66   sFT  0.99995579   -0 02 18.6
 HV4990;UTM  18      - 4,283,034.775   320,689.789   MT  0.99999595   -1 17 18.8
 HV4990
 HV4990!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4990!SPC MD       -   0.99999713  x   0.99995579  =   0.99995292
 HV4990!UTM  18      -   0.99999713  x   0.99999595  =   0.99999308
 HV4990
 HV4990_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2068983034(NAD 83)
 HV4990
 HV4990                          SUPERSEDED SURVEY CONTROL
 HV4990
 HV4990  NAD 83(1991)-  38 40 39.94302(N)    077 03 40.81811(W) AD(       ) 2
 HV4990  NAD 83(1986)-  38 40 39.94412(N)    077 03 40.83093(W) AD(       ) 2
 HV4990  NAD 27      -  38 40 39.52909(N)    077 03 41.91289(W) AD(       ) 2
 HV4990  NGVD 29 (07/19/86)   51.0    (m)          167.     (f) VERT ANG       
 HV4990
 HV4990.Superseded values are not recommended for survey control.
 HV4990
 HV4990.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4990.See file dsdata.pdf to determine how the superseded data were derived.
 HV4990
 HV4990_MARKER: I = METAL ROD
 HV4990_SETTING: 0 = UNSPECIFIED SETTING
 HV4990_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4990
 HV4990  HISTORY     - Date     Condition        Report By
 HV4990  HISTORY     - 1969     MONUMENTED       WSSC
 HV4990
 HV4990                          STATION DESCRIPTION
 HV4990
 HV4990'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV4990'THE STATION IS LOCATED 1.1 MILES SOUTHWEST OF BRYAN POINT, .50
 HV4990'MILES SOUTHEAST OF THE POTOMAC RIVER AND IS ON OLD MARSHALL
 HV4990'HALL ROAD.
 HV4990'
 HV4990'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 210 (INDIAN
 HV4990'HEAD HIGHWAY) AND ACCOKEEK ROAD, GO WEST ON ACCOKEEK ROAD FOR
 HV4990'2.2 MILES TO THE INTERSECTION OF OLD MARSHALL HALL ROAD.  TURN
 HV4990'RIGHT ON OLD MARSHALL HALL ROAD AND GO 1.0 MILES TO NEW
 HV4990'MARSHALL HALL ROAD.  CONTINUE NORTH ON OLD MARSHALL HALL ROAD
 HV4990'FOR 1.10 MILES TO THE STATION ON THE RIGHT.
 HV4990'
 HV4990'THE STATION MARK IS A CONCRETE MONUMENT WITH AN IRON ROD
 HV4990'CENTER AND IS SET FLUSH WITH THE SURFACE.  IT IS 600 FEET
 HV4990'SOUTHEAST OF OLD MARSHALL HALL ROAD, 18.53 FEET SOUTHEAST OF
 HV4990'AN 8-INCH PINE, 37.73 FEET WEST OF A 24-INCH OAK, 11.06 FEET
 HV4990'WEST OF A 5-INCH PINE, 16.90 FEET NORTHWEST OF A 6-INCH OAK,
 HV4990'AND 38.97 FEET NORTH OF AN 8-INCH PINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8047 ***********************************************************************
 HV8047  DESIGNATION -  1756 WSSC
 HV8047  PID         -  HV8047
 HV8047  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8047  COUNTRY     -  US
 HV8047  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8047
 HV8047                         *CURRENT SURVEY CONTROL
 HV8047  ______________________________________________________________________
 HV8047* NAD 83(1986) POSITION- 38 59 53.     (N) 076 55 12.     (W)   SCALED
 HV8047* NAVD 88 ORTHO HEIGHT -    19.191 (meters)       62.96  (feet) ADJUSTED
 HV8047  ______________________________________________________________________
 HV8047  GEOID HEIGHT    -        -32.160 (meters)                     GEOID18
 HV8047  DYNAMIC HEIGHT  -         19.181 (meters)       62.93  (feet) COMP
 HV8047  MODELED GRAVITY -    980,105.2   (mgal)                       NAVD 88
 HV8047
 HV8047  VERT ORDER      -  SECOND    CLASS 0
 HV8047
 HV8047.The horizontal coordinates were scaled from a map and have
 HV8047.an estimated accuracy of +/- 6 seconds.
 HV8047
 HV8047.The orthometric height was determined by differential leveling and
 HV8047.adjusted by the NATIONAL GEODETIC SURVEY
 HV8047.in June 1991.
 HV8047
 HV8047.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8047.GEOID18 height accuracy estimate available here.
 HV8047
 HV8047.Click photographs - Photos may exist for this station.
 HV8047
 HV8047.The dynamic height is computed by dividing the NAVD 88
 HV8047.geopotential number by the normal gravity value computed on the
 HV8047.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8047.degrees latitude (g = 980.6199 gals.).
 HV8047
 HV8047.The modeled gravity was interpolated from observed gravity values.
 HV8047
 HV8047;                    North         East    Units  Estimated Accuracy
 HV8047;SPC MD       -   147,790.      406,930.      MT  (+/- 180 meters Scaled)
 HV8047
 HV8047_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ337183(NAD 83)
 HV8047
 HV8047                          SUPERSEDED SURVEY CONTROL
 HV8047
 HV8047  NGVD 29 (11/26/84)   19.414  (m)           63.69   (f) ADJUSTED    2 0
 HV8047
 HV8047.Superseded values are not recommended for survey control.
 HV8047
 HV8047.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8047.See file dsdata.pdf to determine how the superseded data were derived.
 HV8047
 HV8047_MARKER: DD = SURVEY DISK
 HV8047_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV8047_STAMPING: 1756
 HV8047_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8047
 HV8047  HISTORY     - Date     Condition        Report By
 HV8047  HISTORY     - UNK      MONUMENTED       WSSC
 HV8047  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV8047
 HV8047                          STATION DESCRIPTION
 HV8047
 HV8047'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV8047'AT BRANCHVILLE.
 HV8047'AT BRANCHVILLE, PRINCE GEORGES COUNTY, 93.8 FEET NORTHEAST
 HV8047'ACROSS THE TRACKS FROM A FIRE HYDRANT, 75 FEET NORTH OF THE
 HV8047'BRANCHVILLE ROAD, 62.4 FEET SOUTH OF A POLE, 29.1 FEET NORTH OF
 HV8047'ANOTHER POLE, 40.4 FEET WEST OF A HIGH FENCE, AND 16.75 FEET
 HV8047'EAST OF THE EASTERN-MOST RAIL OF THE BALTIMORE AND OHIO
 HV8047'RAILROAD.  A WASHINGTON SUBURBAN SANITARY DISTRICT BRONZE DISK,
 HV8047'STAMPED 1756 AND SET IN THE TOP OF AN IRON PIPE A FEW INCHES
 HV8047'UNDER GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2751 ***********************************************************************
 JV2751  DESIGNATION -  1758 WSSC
 JV2751  PID         -  JV2751
 JV2751  STATE/COUNTY-  MD/MONTGOMERY
 JV2751  COUNTRY     -  US
 JV2751  USGS QUAD   -  KENSINGTON (2016)
 JV2751
 JV2751                         *CURRENT SURVEY CONTROL
 JV2751  ______________________________________________________________________
 JV2751* NAD 83(1986) POSITION- 39 00 09.     (N) 077 01 28.     (W)   SCALED
 JV2751* NAVD 88 ORTHO HEIGHT -    96.155 (meters)      315.47  (feet) ADJUSTED
 JV2751  ______________________________________________________________________
 JV2751  GEOID HEIGHT    -        -31.970 (meters)                     GEOID18
 JV2751  DYNAMIC HEIGHT  -         96.103 (meters)      315.30  (feet) COMP
 JV2751  MODELED GRAVITY -    980,085.6   (mgal)                       NAVD 88
 JV2751
 JV2751  VERT ORDER      -  SECOND    CLASS 0
 JV2751
 JV2751.The horizontal coordinates were scaled from a map and have
 JV2751.an estimated accuracy of +/- 6 seconds.
 JV2751
 JV2751.The orthometric height was determined by differential leveling and
 JV2751.adjusted by the NATIONAL GEODETIC SURVEY
 JV2751.in June 1991.
 JV2751
 JV2751.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2751.GEOID18 height accuracy estimate available here.
 JV2751
 JV2751.Click photographs - Photos may exist for this station.
 JV2751
 JV2751.The dynamic height is computed by dividing the NAVD 88
 JV2751.geopotential number by the normal gravity value computed on the
 JV2751.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2751.degrees latitude (g = 980.6199 gals.).
 JV2751
 JV2751.The modeled gravity was interpolated from observed gravity values.
 JV2751
 JV2751;                    North         East    Units  Estimated Accuracy
 JV2751;SPC MD       -   148,280.      397,880.      MT  (+/- 180 meters Scaled)
 JV2751
 JV2751_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ246190(NAD 83)
 JV2751
 JV2751                          SUPERSEDED SURVEY CONTROL
 JV2751
 JV2751  NGVD 29 (11/26/84)   96.365  (m)          316.16   (f) ADJUSTED    2 0
 JV2751
 JV2751.Superseded values are not recommended for survey control.
 JV2751
 JV2751.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2751.See file dsdata.pdf to determine how the superseded data were derived.
 JV2751
 JV2751_MARKER: DD = SURVEY DISK
 JV2751_SETTING: 0 = UNSPECIFIED SETTING
 JV2751_SP_SET: IRON PIPE
 JV2751_STAMPING: 1758
 JV2751_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2751
 JV2751  HISTORY     - Date     Condition        Report By
 JV2751  HISTORY     - UNK      MONUMENTED       WSSC
 JV2751  HISTORY     - 1951     GOOD             CGS
 JV2751  HISTORY     - 1956     MARK NOT FOUND   USGS
 JV2751
 JV2751                          STATION DESCRIPTION
 JV2751
 JV2751'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2751'AT SILVER SPRING.
 JV2751'AT SILVER SPRING, MONTGOMERY COUNTY, AT THE INTERSECTION OF
 JV2751'WOODSIDE PARKWAY AND COLESVILLE ROAD (U.S. HIGHWAY 29), IN
 JV2751'THE WEST ANGLE, IN FRONT OF HOUSE NUMBER 33 ON THE NORTHWEST
 JV2751'SIDE OF COLESVILLE ROAD, BETWEEN THE WALK AND THE STONE WALL,
 JV2751'509 FEET NORTHEAST OF THE BEGINNING OF THE CURVE IN THE WALL,
 JV2751'34.15 FEET FROM THE NEAREST EAST CORNER OF THE HOUSE, 19.4 FEET
 JV2751'SOUTH OF THE SOUTH SIDE OF POLE 723095, AND 1.6 FEET OUT
 JV2751'FROM THE FACE OF THE WALL.  A WASHINGTON SUBURBAN SANITARY
 JV2751'DISTRICT BRONZE DISK, STAMPED 1758, AND FASTENED TO THE TOP OF
 JV2751'AN IRON PIPE SLIGHTLY UNDERGROUND.
 JV2751
 JV2751                          STATION RECOVERY (1956)
 JV2751
 JV2751'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956
 JV2751'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2740 ***********************************************************************
 JV2740  DESIGNATION -  1760 WSSC
 JV2740  PID         -  JV2740
 JV2740  STATE/COUNTY-  MD/MONTGOMERY
 JV2740  COUNTRY     -  US
 JV2740  USGS QUAD   -  KENSINGTON (2016)
 JV2740
 JV2740                         *CURRENT SURVEY CONTROL
 JV2740  ______________________________________________________________________
 JV2740* NAD 83(1986) POSITION- 39 02 27.     (N) 077 02 56.     (W)   SCALED
 JV2740* NAVD 88 ORTHO HEIGHT -   128.765 (meters)      422.46  (feet) ADJUSTED
 JV2740  ______________________________________________________________________
 JV2740  GEOID HEIGHT    -        -31.906 (meters)                     GEOID18
 JV2740  DYNAMIC HEIGHT  -        128.695 (meters)      422.23  (feet) COMP
 JV2740  MODELED GRAVITY -    980,086.9   (mgal)                       NAVD 88
 JV2740
 JV2740  VERT ORDER      -  SECOND    CLASS 0
 JV2740
 JV2740.The horizontal coordinates were scaled from a map and have
 JV2740.an estimated accuracy of +/- 6 seconds.
 JV2740
 JV2740.The orthometric height was determined by differential leveling and
 JV2740.adjusted by the NATIONAL GEODETIC SURVEY
 JV2740.in June 1991.
 JV2740
 JV2740.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2740.GEOID18 height accuracy estimate available here.
 JV2740
 JV2740.Click photographs - Photos may exist for this station.
 JV2740
 JV2740.The dynamic height is computed by dividing the NAVD 88
 JV2740.geopotential number by the normal gravity value computed on the
 JV2740.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2740.degrees latitude (g = 980.6199 gals.).
 JV2740
 JV2740.The modeled gravity was interpolated from observed gravity values.
 JV2740
 JV2740;                    North         East    Units  Estimated Accuracy
 JV2740;SPC MD       -   152,540.      395,770.      MT  (+/- 180 meters Scaled)
 JV2740
 JV2740_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ226233(NAD 83)
 JV2740
 JV2740                          SUPERSEDED SURVEY CONTROL
 JV2740
 JV2740  NGVD 29 (11/26/84)  128.988  (m)          423.19   (f) ADJUSTED    2 0
 JV2740
 JV2740.Superseded values are not recommended for survey control.
 JV2740
 JV2740.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2740.See file dsdata.pdf to determine how the superseded data were derived.
 JV2740
 JV2740_MARKER: DD = SURVEY DISK
 JV2740_SETTING: 0 = UNSPECIFIED SETTING
 JV2740_SP_SET: IRON PIPE
 JV2740_STAMPING: 1760
 JV2740_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2740
 JV2740  HISTORY     - Date     Condition        Report By
 JV2740  HISTORY     - UNK      MONUMENTED       WSSC
 JV2740  HISTORY     - 1952     GOOD             CGS
 JV2740  HISTORY     - 1956     MARK NOT FOUND   USGS
 JV2740
 JV2740                          STATION DESCRIPTION
 JV2740
 JV2740'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV2740'0.2 MI E FROM WHEATON.
 JV2740'AT WHEATON, MONTGOMERY COUNTY, 0.2 MILE EAST ALONG STATE HIGHWAY
 JV2740'193 FROM THE INTERSECTION OF GEORGIA AVENUE (STATE HIGHWAY 97),
 JV2740'AT THE JUNCTION OF VERNOSIA PLACE, IN THE SOUTHEAST ANGLE, 60.0
 JV2740'FEET NORTHWEST OF THE NORTHWEST CORNER OF A PORCH, 63.0 FEET
 JV2740'NORTHWEST OF THE NORTHEAST CORNER OF THE PORCH, 4.4 FEET SOUTHEAST
 JV2740'OF A PIPE, AND 4.4 FEET WEST OF A 20-INCH OAK TREE.  A WASHINGTON
 JV2740'SUBURBAN SANITARY DISTRICT BRONZE DISK, STAMPED 1760, AND
 JV2740'FASTENED TO THE TOP OF AN IRON PIPE.
 JV2740
 JV2740                          STATION RECOVERY (1956)
 JV2740
 JV2740'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956
 JV2740'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1348 ***********************************************************************
 HV1348  DESIGNATION -  1761 WSSC
 HV1348  PID         -  HV1348
 HV1348  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1348  COUNTRY     -  US
 HV1348  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1348
 HV1348                         *CURRENT SURVEY CONTROL
 HV1348  ______________________________________________________________________
 HV1348* NAD 83(1986) POSITION- 38 56 00.     (N) 076 56 17.     (W)   SCALED
 HV1348* NAVD 88 ORTHO HEIGHT -     1.03  (+/-2cm)        3.4   (feet) VERTCON3
 HV1348  ______________________________________________________________________
 HV1348  GEOID HEIGHT    -        -32.200 (meters)                     GEOID18
 HV1348  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1348
 HV1348.The horizontal coordinates were scaled from a map and have
 HV1348.an estimated accuracy of +/- 6 seconds.
 HV1348
 HV1348.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1348.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1348
 HV1348.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1348.GEOID18 height accuracy estimate available here.
 HV1348
 HV1348.The vertical order pertains to the NGVD 29 superseded value.
 HV1348
 HV1348.Click photographs - Photos may exist for this station.
 HV1348
 HV1348;                    North         East    Units  Estimated Accuracy
 HV1348;SPC MD       -   140,610.      405,370.      MT  (+/- 180 meters Scaled)
 HV1348
 HV1348_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ320111(NAD 83)
 HV1348
 HV1348                          SUPERSEDED SURVEY CONTROL
 HV1348
 HV1348  NGVD 29 (11/26/84)    1.264  (m)            4.15   (f) ADJUSTED    2 0
 HV1348
 HV1348.Superseded values are not recommended for survey control.
 HV1348
 HV1348.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1348.See file dsdata.pdf to determine how the superseded data were derived.
 HV1348
 HV1348_MARKER: DD = SURVEY DISK
 HV1348_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1348_STAMPING: 1761
 HV1348_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1348
 HV1348  HISTORY     - Date     Condition        Report By
 HV1348  HISTORY     - UNK      MONUMENTED       WSSC
 HV1348  HISTORY     - 1944     GOOD             WSSC
 HV1348
 HV1348                          STATION DESCRIPTION
 HV1348
 HV1348'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1348'0.5 MI S FROM BLADENSBURG.
 HV1348'ABOUT 1/2 MILE SOUTH OF PEACE CROSS, ABOUT 1/2 MILE WEST OF
 HV1348'KENILWORTH AVENUE, 120 FEET EAST OF ANACOSTIA RIVER, ON THE
 HV1348'PROPERTY OF C.C. PARKER, AND ON THE SOUTH SIDE OF PARKERS LANE
 HV1348'EXTENDED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1417 ***********************************************************************
 JV1417  DESIGNATION -  1783 WSSC
 JV1417  PID         -  JV1417
 JV1417  STATE/COUNTY-  MD/MONTGOMERY
 JV1417  COUNTRY     -  US
 JV1417  USGS QUAD   -  BELTSVILLE (2016)
 JV1417
 JV1417                         *CURRENT SURVEY CONTROL
 JV1417  ______________________________________________________________________
 JV1417* NAD 83(1986) POSITION- 39 00 44.     (N) 076 58 47.     (W)   SCALED
 JV1417* NAVD 88 ORTHO HEIGHT -    82.157 (meters)      269.54  (feet) ADJUSTED
 JV1417  ______________________________________________________________________
 JV1417  GEOID HEIGHT    -        -32.035 (meters)                     GEOID18
 JV1417  DYNAMIC HEIGHT  -         82.114 (meters)      269.40  (feet) COMP
 JV1417  MODELED GRAVITY -    980,096.8   (mgal)                       NAVD 88
 JV1417
 JV1417  VERT ORDER      -  SECOND    CLASS 0
 JV1417
 JV1417.The horizontal coordinates were scaled from a map and have
 JV1417.an estimated accuracy of +/- 6 seconds.
 JV1417
 JV1417.The orthometric height was determined by differential leveling and
 JV1417.adjusted by the NATIONAL GEODETIC SURVEY
 JV1417.in June 1991.
 JV1417
 JV1417.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1417.GEOID18 height accuracy estimate available here.
 JV1417
 JV1417.Click photographs - Photos may exist for this station.
 JV1417
 JV1417.The dynamic height is computed by dividing the NAVD 88
 JV1417.geopotential number by the normal gravity value computed on the
 JV1417.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1417.degrees latitude (g = 980.6199 gals.).
 JV1417
 JV1417.The modeled gravity was interpolated from observed gravity values.
 JV1417
 JV1417;                    North         East    Units  Estimated Accuracy
 JV1417;SPC MD       -   149,360.      401,760.      MT  (+/- 180 meters Scaled)
 JV1417
 JV1417_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ285199(NAD 83)
 JV1417
 JV1417                          SUPERSEDED SURVEY CONTROL
 JV1417
 JV1417  NGVD 29 (11/26/84)   82.380  (m)          270.27   (f) ADJUSTED    2 0
 JV1417
 JV1417.Superseded values are not recommended for survey control.
 JV1417
 JV1417.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1417.See file dsdata.pdf to determine how the superseded data were derived.
 JV1417
 JV1417_MARKER: Z = SEE DESCRIPTION
 JV1417_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1417_SP_SET: CONCRETE
 JV1417_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1417
 JV1417  HISTORY     - Date     Condition        Report By
 JV1417  HISTORY     - UNK      MONUMENTED       WSSC
 JV1417  HISTORY     - 1951     GOOD             CGS
 JV1417
 JV1417                          STATION DESCRIPTION
 JV1417
 JV1417'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1417'0.6 MI N FROM NORTHWEST PARK.
 JV1417'0.55 MILE NORTH ALONG THE OLD ROUTE OF NEW HAMPSHIRE AVENUE
 JV1417'(STATE HIGHWAY 320) FROM THE INTERSECTION OF METZROTT ROAD AT
 JV1417'NORTHWEST PARK, PRINCE GEORGES COUNTY, ON THE WEST SIDE OF THE
 JV1417'OLD HIGHWAY WHICH IS WEST OF THE PRESENT HIGHWAY, AND STILL IN
 JV1417'USE, AND 79.3 FEET WEST ACROSS THE HIGHWAY FROM POLE 145.  A
 JV1417'BRASS LAG SCREW AND WASHER SET IN CONCRETE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1415 ***********************************************************************
 JV1415  DESIGNATION -  1785 WSSC
 JV1415  PID         -  JV1415
 JV1415  STATE/COUNTY-  MD/MONTGOMERY
 JV1415  COUNTRY     -  US
 JV1415  USGS QUAD   -  BELTSVILLE (2016)
 JV1415
 JV1415                         *CURRENT SURVEY CONTROL
 JV1415  ______________________________________________________________________
 JV1415* NAD 83(1986) POSITION- 39 00 59.     (N) 076 58 39.     (W)   SCALED
 JV1415* NAVD 88 ORTHO HEIGHT -    92.97  (+/-2cm)      305.0   (feet) VERTCON3
 JV1415  ______________________________________________________________________
 JV1415  GEOID HEIGHT    -        -32.036 (meters)                     GEOID18
 JV1415  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1415
 JV1415.The horizontal coordinates were scaled from a map and have
 JV1415.an estimated accuracy of +/- 6 seconds.
 JV1415
 JV1415.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1415.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1415
 JV1415.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1415.GEOID18 height accuracy estimate available here.
 JV1415
 JV1415.The vertical order pertains to the NGVD 29 superseded value.
 JV1415
 JV1415.Click photographs - Photos may exist for this station.
 JV1415
 JV1415;                    North         East    Units  Estimated Accuracy
 JV1415;SPC MD       -   149,830.      401,950.      MT  (+/- 180 meters Scaled)
 JV1415
 JV1415_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ287204(NAD 83)
 JV1415
 JV1415                          SUPERSEDED SURVEY CONTROL
 JV1415
 JV1415  NGVD 29 (11/26/84)   93.190  (m)          305.74   (f) ADJUSTED    2 0
 JV1415
 JV1415.Superseded values are not recommended for survey control.
 JV1415
 JV1415.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1415.See file dsdata.pdf to determine how the superseded data were derived.
 JV1415
 JV1415_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION
 JV1415_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1415_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1415+STABILITY: SURFACE MOTION
 JV1415
 JV1415  HISTORY     - Date     Condition        Report By
 JV1415  HISTORY     - UNK      MONUMENTED       WSSC
 JV1415  HISTORY     - 1939     GOOD             WSSC
 JV1415  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1415
 JV1415                          STATION DESCRIPTION
 JV1415
 JV1415'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1415'AT OAKVIEW.
 JV1415'ON AN OLD ROAD PARALLELING NEW HAMPSHIRE AVENUE, ABOUT 800 FEET
 JV1415'NORTH OF TRIANGULATION STATION PISGALI, ABOUT 500 FEET SOUTHWEST
 JV1415'OF A ROAD JUNCTION, 54.7 FEET EAST ACROSS THE ROAD FROM A POLE,
 JV1415'AND 29 FEET NORTH OF ANOTHER POLE.
 JV1415
 JV1415                          STATION RECOVERY (1951)
 JV1415
 JV1415'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV1415'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2680 ***********************************************************************
 JV2680  DESIGNATION -  1793 WSSC
 JV2680  PID         -  JV2680
 JV2680  STATE/COUNTY-  MD/MONTGOMERY
 JV2680  COUNTRY     -  US
 JV2680  USGS QUAD   -  KENSINGTON (2016)
 JV2680
 JV2680                         *CURRENT SURVEY CONTROL
 JV2680  ______________________________________________________________________
 JV2680* NAD 83(1986) POSITION- 39 04 04.     (N) 077 01 01.     (W)   SCALED
 JV2680* NAVD 88 ORTHO HEIGHT -   118.038 (meters)      387.26  (feet) ADJUSTED
 JV2680  ______________________________________________________________________
 JV2680  GEOID HEIGHT    -        -31.948 (meters)                     GEOID18
 JV2680  DYNAMIC HEIGHT  -        117.974 (meters)      387.05  (feet) COMP
 JV2680  MODELED GRAVITY -    980,081.6   (mgal)                       NAVD 88
 JV2680
 JV2680  VERT ORDER      -  SECOND    CLASS 0
 JV2680
 JV2680.The horizontal coordinates were scaled from a map and have
 JV2680.an estimated accuracy of +/- 6 seconds.
 JV2680
 JV2680.The orthometric height was determined by differential leveling and
 JV2680.adjusted by the NATIONAL GEODETIC SURVEY
 JV2680.in June 1991.
 JV2680
 JV2680.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2680.GEOID18 height accuracy estimate available here.
 JV2680
 JV2680.Click photographs - Photos may exist for this station.
 JV2680
 JV2680.The dynamic height is computed by dividing the NAVD 88
 JV2680.geopotential number by the normal gravity value computed on the
 JV2680.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2680.degrees latitude (g = 980.6199 gals.).
 JV2680
 JV2680.The modeled gravity was interpolated from observed gravity values.
 JV2680
 JV2680;                    North         East    Units  Estimated Accuracy
 JV2680;SPC MD       -   155,530.      398,530.      MT  (+/- 180 meters Scaled)
 JV2680
 JV2680_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ255262(NAD 83)
 JV2680
 JV2680                          SUPERSEDED SURVEY CONTROL
 JV2680
 JV2680  NGVD 29 (11/26/84)  118.250  (m)          387.96   (f) ADJUSTED    2 0
 JV2680
 JV2680.Superseded values are not recommended for survey control.
 JV2680
 JV2680.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2680.See file dsdata.pdf to determine how the superseded data were derived.
 JV2680
 JV2680_MARKER: Z = SEE DESCRIPTION
 JV2680_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2680_SP_SET: GATEPOST
 JV2680_STAMPING: WSSC 1793
 JV2680_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2680
 JV2680  HISTORY     - Date     Condition        Report By
 JV2680  HISTORY     - UNK      MONUMENTED       WSSC
 JV2680  HISTORY     - 1951     GOOD             CGS
 JV2680  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2680
 JV2680                          STATION DESCRIPTION
 JV2680
 JV2680'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2680'1 MI SW FROM COLESVILLE.
 JV2680'1.0 MILE SOUTHWEST ALONG STATE HIGHWAY 183 FROM THE JUNCTION
 JV2680'WITH U.S. HIGHWAY 29 AT COLESVILLE, MONTGOMERY COUNTY, ON THE
 JV2680'NORTHWEST SIDE OF THE HIGHWAY, AT THE ENTRANCE TO THE HOME OF
 JV2680'WALTER BROWN, AND IN THE SOUTHWEST SIDE OF THE NORTHEAST ONE
 JV2680'OF THE TWO GATEPOSTS NEAREST THE DRIVEWAY.  A WASHINGTON SUBURBAN
 JV2680'SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED WSSC 1793 AND
 JV2680'SET IN THE SIDE OF THE GATEPOST.
 JV2680
 JV2680                          STATION RECOVERY (1995)
 JV2680
 JV2680'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2680'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2616 ***********************************************************************
 JV2616  DESIGNATION -  1795 WSSC
 JV2616  PID         -  JV2616
 JV2616  STATE/COUNTY-  MD/MONTGOMERY
 JV2616  COUNTRY     -  US
 JV2616  USGS QUAD   -  KENSINGTON (2016)
 JV2616
 JV2616                         *CURRENT SURVEY CONTROL
 JV2616  ______________________________________________________________________
 JV2616* NAD 83(1986) POSITION- 39 07 26.     (N) 077 04 25.     (W)   SCALED
 JV2616* NAVD 88 ORTHO HEIGHT -   149.85  (+/-2cm)      491.6   (feet) VERTCON3
 JV2616  ______________________________________________________________________
 JV2616  GEOID HEIGHT    -        -31.815 (meters)                     GEOID18
 JV2616  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2616
 JV2616.The horizontal coordinates were scaled from a map and have
 JV2616.an estimated accuracy of +/- 6 seconds.
 JV2616
 JV2616.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2616.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2616
 JV2616.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2616.GEOID18 height accuracy estimate available here.
 JV2616
 JV2616.The vertical order pertains to the NGVD 29 superseded value.
 JV2616
 JV2616.Click photographs - Photos may exist for this station.
 JV2616
 JV2616;                    North         East    Units  Estimated Accuracy
 JV2616;SPC MD       -   161,760.      393,640.      MT  (+/- 180 meters Scaled)
 JV2616
 JV2616_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ207325(NAD 83)
 JV2616
 JV2616                          SUPERSEDED SURVEY CONTROL
 JV2616
 JV2616  NGVD 29 (11/26/84)  150.057  (m)          492.31   (f) ADJUSTED    2 0
 JV2616
 JV2616.Superseded values are not recommended for survey control.
 JV2616
 JV2616.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2616.See file dsdata.pdf to determine how the superseded data were derived.
 JV2616
 JV2616_MARKER: B = BOLT
 JV2616_SETTING: 0 = UNSPECIFIED SETTING
 JV2616_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2616
 JV2616  HISTORY     - Date     Condition        Report By
 JV2616  HISTORY     - UNK      MONUMENTED       WSSC
 JV2616  HISTORY     - 1944     GOOD             WSSC
 JV2616  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2616
 JV2616                          STATION DESCRIPTION
 JV2616
 JV2616'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2616'1 MI N FROM NORBECK.
 JV2616'ON GEORGIA AVENUE (STATE HIGHWAY 97), AT THE JUNCTION OF A ROAD
 JV2616'LEADING EAST TO SANDY SPRING, 35 FEET NORTH OF THE CENTERLINE
 JV2616'OF THE SANDY SPRING ROAD, 25.5 FEET EAST OF THE CENTERLINE OF THE
 JV2616'HIGHWAY, 71.5 FEET NORTHEAST ACROSS THE HIGHWAY FROM P.E.P. CO.
 JV2616'GUY POLE 75859G, 59.3 FEET NORTH OF P.E.P. CO. POLE 75854, AND
 JV2616'21.2 FEET NORTH OF A FENCE CORNER.
 JV2616
 JV2616                          STATION RECOVERY (1995)
 JV2616
 JV2616'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2616'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0302 ***********************************************************************
 JW0302  DESIGNATION -  18
 JW0302  PID         -  JW0302
 JW0302  STATE/COUNTY-  MD/ALLEGANY
 JW0302  COUNTRY     -  US
 JW0302  USGS QUAD   -  KEYSER (2016)
 JW0302
 JW0302                         *CURRENT SURVEY CONTROL
 JW0302  ______________________________________________________________________
 JW0302* NAD 83(1986) POSITION- 39 28 59.     (N) 078 56 30.     (W)   SCALED
 JW0302* NAVD 88 ORTHO HEIGHT -   230.372 (meters)      755.81  (feet) ADJUSTED
 JW0302  ______________________________________________________________________
 JW0302  GEOID HEIGHT    -        -32.343 (meters)                     GEOID18
 JW0302  DYNAMIC HEIGHT  -        230.228 (meters)      755.34  (feet) COMP
 JW0302  MODELED GRAVITY -    979,997.6   (mgal)                       NAVD 88
 JW0302
 JW0302  VERT ORDER      -  SECOND    CLASS 0
 JW0302
 JW0302.The horizontal coordinates were scaled from a map and have
 JW0302.an estimated accuracy of +/- 6 seconds.
 JW0302
 JW0302.The orthometric height was determined by differential leveling and
 JW0302.adjusted by the NATIONAL GEODETIC SURVEY
 JW0302.in June 1991.
 JW0302
 JW0302.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0302.GEOID18 height accuracy estimate available here.
 JW0302
 JW0302.Click photographs - Photos may exist for this station.
 JW0302
 JW0302.The dynamic height is computed by dividing the NAVD 88
 JW0302.geopotential number by the normal gravity value computed on the
 JW0302.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0302.degrees latitude (g = 980.6199 gals.).
 JW0302
 JW0302.The modeled gravity was interpolated from observed gravity values.
 JW0302
 JW0302;                    North         East    Units  Estimated Accuracy
 JW0302;SPC MD       -   203,410.      232,960.      MT  (+/- 180 meters Scaled)
 JW0302
 JW0302_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD770724(NAD 83)
 JW0302
 JW0302                          SUPERSEDED SURVEY CONTROL
 JW0302
 JW0302  NGVD 29 (??/??/92)  230.554  (m)          756.41   (f) ADJ UNCH    2 0
 JW0302
 JW0302.Superseded values are not recommended for survey control.
 JW0302
 JW0302.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0302.See file dsdata.pdf to determine how the superseded data were derived.
 JW0302
 JW0302_MARKER: B = BOLT
 JW0302_SETTING: 66 = SET IN ROCK OUTCROP
 JW0302_STAMPING: NO 18
 JW0302_MARK LOGO: BORR
 JW0302_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW0302+STABILITY: POSITION/ELEVATION WELL
 JW0302
 JW0302  HISTORY     - Date     Condition        Report By
 JW0302  HISTORY     - UNK      MONUMENTED       BORR
 JW0302  HISTORY     - 1935     GOOD             CGS
 JW0302  HISTORY     - 1935     GOOD             CGS
 JW0302
 JW0302                          STATION DESCRIPTION
 JW0302
 JW0302'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0302'4.8 MI N FROM KEYSER.
 JW0302'IN ALLEGANY COUNTY, MARYLAND, 4.8 MILES NORTH ALONG THE BALTIMORE
 JW0302'AND OHIO RAILROAD FROM THE STATION AT KEYSER, MINERAL COUNTY,
 JW0302'WEST VIRGINIA, 370 YARDS NORTH OF THE RAILROAD STOP AT DAWSON,
 JW0302'90 FEET NORTH OF THE FOURTH POLE NORTH OF POLE 196/35, AT A
 JW0302'ROAD TUNNEL UNDER THE TRACK, 10 FEET EAST OF THE CENTER LINE
 JW0302'OF THE EAST TRACK, 3 FEET SOUTH OF THE SOUTHEAST CORNER OF THE
 JW0302'CONCRETE ABUTMENT, IN THE TOP OF A BOULDER, AND ABOUT 1 FOOT
 JW0302'LOWER THAN THE TRACK.  A COPPER BOLT, STAMPED NO 18.
 JW0302
 JW0302                          STATION RECOVERY (1935)
 JW0302
 JW0302'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JW0302'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7821 ***********************************************************************
 DR7821  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7821  DESIGNATION -  18
 DR7821  PID         -  DR7821
 DR7821  STATE/COUNTY-  MD/QUEEN ANNES
 DR7821  COUNTRY     -  US
 DR7821  USGS QUAD   -  CENTREVILLE (2017)
 DR7821
 DR7821                         *CURRENT SURVEY CONTROL
 DR7821  ______________________________________________________________________
 DR7821* NAD 83(2011) POSITION- 39 00 03.59504(N) 076 03 36.54123(W)   ADJUSTED
 DR7821* NAD 83(2011) ELLIP HT-   -12.453 (meters)        (02/02/22)   ADJUSTED
 DR7821* NAD 83(2011) EPOCH   -  2010.00
 DR7821* NAVD 88 ORTHO HEIGHT -    21.56  (meters)       70.7   (feet) GPS OBS
 DR7821  ______________________________________________________________________
 DR7821  GEOID HEIGHT    -        -34.010 (meters)                     GEOID18
 DR7821  NAD 83(2011) X  -  1,195,661.928 (meters)                     COMP
 DR7821  NAD 83(2011) Y  - -4,817,076.104 (meters)                     COMP
 DR7821  NAD 83(2011) Z  -  3,992,395.341 (meters)                     COMP
 DR7821  LAPLACE CORR    -         -4.33  (seconds)                    DEFLEC18
 DR7821
 DR7821  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7821  Standards:
 DR7821         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7821            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7821  -------------------------------------------------------------------
 DR7821  NETWORK    0.75   1.71           0.33   0.28   0.87     -0.11628950
 DR7821  -------------------------------------------------------------------
 DR7821  Click here for local accuracies and other accuracy information.
 DR7821
 DR7821.The horizontal coordinates were established by GPS observations
 DR7821.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7821
 DR7821.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7821.been affixed to the stable North American tectonic plate. See 
 DR7821.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7821
 DR7821.The horizontal coordinates are valid at the epoch date displayed above
 DR7821.which is a decimal equivalence of Year/Month/Day.
 DR7821
 DR7821.The orthometric height was determined by GPS observations and a
 DR7821.high-resolution geoid model using precise GPS observation and
 DR7821.processing techniques.
 DR7821
 DR7821.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7821.GEOID18 height accuracy estimate available here.
 DR7821
 DR7821.Click photographs - Photos may exist for this station.
 DR7821
 DR7821.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7821
 DR7821.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7821
 DR7821.The ellipsoidal height was determined by GPS observations
 DR7821.and is referenced to NAD 83.
 DR7821
 DR7821. The following values were computed from the NAD 83(2011) position.
 DR7821
 DR7821;                    North         East     Units Scale Factor Converg.
 DR7821;SPC MD       -   148,536.139   481,409.324   MT  0.99995223   +0 35 23.6
 DR7821;SPC MD       -   487,322.32  1,579,423.76   sFT  0.99995223   +0 35 23.6
 DR7821;UTM  18      - 4,317,421.925   408,199.912   MT  0.99970377   -0 40 02.0
 DR7821
 DR7821!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7821!SPC MD       -   1.00000195  x   0.99995223  =   0.99995418
 DR7821!UTM  18      -   1.00000195  x   0.99970377  =   0.99970572
 DR7821
 DR7821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0819917421(NAD 83)
 DR7821
 DR7821                          SUPERSEDED SURVEY CONTROL
 DR7821
 DR7821.No superseded survey control is available for this station.
 DR7821
 DR7821_MARKER: DD = SURVEY DISK
 DR7821_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7821_STAMPING: 18
 DR7821_MARK LOGO: MD-035
 DR7821_PROJECTION: RECESSED 12 CENTIMETERS
 DR7821_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7821+STABILITY: SURFACE MOTION
 DR7821_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7821+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7821
 DR7821  HISTORY     - Date     Condition        Report By
 DR7821  HISTORY     - UNK      MONUMENTED       MD-035
 DR7821  HISTORY     - 20210309 GOOD             MDSHA
 DR7821
 DR7821                          STATION DESCRIPTION
 DR7821
 DR7821'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7821'THE MARK IS LOCATED ABOUT 3.3 MI (5.3 KM) NORTHEAST OF SCOTTOWN, 3.1
 DR7821'MI (5.0 KM) WEST-NORTHWEST OF STARR AND 2.8 MI (4.5 KM) SOUTH OF
 DR7821'CENTREVILLE.
 DR7821'
 DR7821'TO REACH FROM THE JUNCTION OF US 301 AND MD 213, GO SOUTH ON MD 213
 DR7821'FOR 1.01 MI (1.63 KM) TO A SIDE ROAD LEFT.  TURN LEFT AND GO EAST ON
 DR7821'MD 309 FOR 0.71 MI (1.14 KM) TO THE MARK ON THE RIGHT.
 DR7821'
 DR7821'THE MARK IS 81.2 FT (24.7 M) SOUTH OF CONNECTIVE UTILITY POLE NUMBERED
 DR7821'33911-16410 AND 15, 77.6 FT (23.7 M) EAST OF THE NORTH POST OF A FARM
 DR7821'CREDIT HELPING YOU GROW SIGN, 40.2 FT (12.3 M) SOUTH OF THE CENTERLINE
 DR7821'OF STATE ROUTE 309, 9.5 FT (2.9 M) NORTH OF A FOUR FOOT TALL ELECTRIC
 DR7821'FENCE LINE, 5.5 FT (1.7 M) WEST OF A FIBER OPTIC PEDESTAL NUMBERED 16
 DR7821'AND SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4591 ***********************************************************************
 JV4591  DESIGNATION -  18 5
 JV4591  PID         -  JV4591
 JV4591  STATE/COUNTY-  MD/FREDERICK
 JV4591  COUNTRY     -  US
 JV4591  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV4591
 JV4591                         *CURRENT SURVEY CONTROL
 JV4591  ______________________________________________________________________
 JV4591* NAD 83(1993) POSITION- 39 22 12.52483(N) 077 29 58.74404(W)   ADJUSTED
 JV4591* NAVD 88 ORTHO HEIGHT -   152.    (meters)      499.    (feet) SCALED
 JV4591  ______________________________________________________________________
 JV4591  GEOID HEIGHT    -        -32.794 (meters)                     GEOID18
 JV4591  LAPLACE CORR    -          3.17  (seconds)                    DEFLEC18
 JV4591  HORZ ORDER      -  THIRD
 JV4591
 JV4591.The horizontal coordinates were established by classical geodetic methods
 JV4591.and adjusted by the National Geodetic Survey in November 1994.
 JV4591
 JV4591.The orthometric height was scaled from a topographic map.
 JV4591
 JV4591.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4591.GEOID18 height accuracy estimate available here.
 JV4591
 JV4591.Click photographs - Photos may exist for this station.
 JV4591
 JV4591.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4591
 JV4591. The following values were computed from the NAD 83(1993) position.
 JV4591
 JV4591;                    North         East     Units Scale Factor Converg.
 JV4591;SPC MD       -   189,215.866   356,944.213   MT  0.99998701   -0 18 49.0
 JV4591;SPC MD       -   620,785.72  1,171,074.47   sFT  0.99998701   -0 18 49.0
 JV4591;SPC VA N     - 2,189,564.087 3,586,204.593   MT  1.00003463   +0 37 27.6
 JV4591;SPC VA N     - 7,183,594.84 11,765,739.57   sFT  1.00003463   +0 37 27.6
 JV4591;UTM  18      - 4,360,833.929   284,669.614   MT  1.00017093   -1 35 10.3
 JV4591
 JV4591!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4591!SPC MD       -   0.99998133  x   0.99998701  =   0.99996834
 JV4591!SPC VA N     -   0.99998133  x   1.00003463  =   1.00001596
 JV4591!UTM  18      -   0.99998133  x   1.00017093  =   1.00015226
 JV4591
 JV4591:                Primary Azimuth Mark                     Grid Az
 JV4591:SPC MD       -  18 6 AZ MK                               221 18 54.9
 JV4591:SPC VA N     -  18 6 AZ MK                               220 22 38.3
 JV4591:UTM  18      -  18 6 AZ MK                               222 35 16.2
 JV4591
 JV4591_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8466960833(NAD 83)
 JV4591
 JV4591|---------------------------------------------------------------------|
 JV4591| PID    Reference Object                     Distance      Geod. Az  |
 JV4591|                                                           dddmmss.s |
 JV4591| CJ9118 18 5 RM 1                            34.858 METERS 21831     |
 JV4591| CJ9120 18 6 AZ MK                                         2210005.9 |
 JV4591| CJ9119 18 5 RM 2                            15.830 METERS 33701     |
 JV4591|---------------------------------------------------------------------|
 JV4591
 JV4591                          SUPERSEDED SURVEY CONTROL
 JV4591
 JV4591  NAD 83(1991)-  39 22 12.52440(N)    077 29 58.74588(W) AD(       ) 3
 JV4591  NAD 83(1986)-  39 22 12.52515(N)    077 29 58.75670(W) AD(       ) 3
 JV4591  NAD 27      -  39 22 12.15900(N)    077 29 59.79300(W) AD(       ) 3
 JV4591
 JV4591.Superseded values are not recommended for survey control.
 JV4591
 JV4591.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4591.See file dsdata.pdf to determine how the superseded data were derived.
 JV4591
 JV4591_MARKER: DD = SURVEY DISK
 JV4591_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4591_MARK LOGO: CGS+SS
 JV4591_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4591+STABILITY: SURFACE MOTION
 JV4591
 JV4591  HISTORY     - Date     Condition        Report By
 JV4591  HISTORY     - 1934     MONUMENTED       MDGS
 JV4591  HISTORY     - 1943     GOOD             CGS
 JV4591  HISTORY     - 1960     GOOD             MDDT
 JV4591
 JV4591                          STATION DESCRIPTION
 JV4591
 JV4591'DESCRIBED BY MARYLAND GEODETIC SURVEY 1934
 JV4591'THIS TRAVERSE STATION IS LOCATED APPROXIMATELY 5 MILES SW OF
 JV4591'FREDERICK ON THE JEFFERSON PIKE, U.S. ROUTE 340, NEAR THE HOUSE OF
 JV4591'M.A. HAUPT, 40.0 FEET E OF STATE ROAD MARKER NO.49, AT TOP OF
 JV4591'HIGH BANK IN FENCE CORNER.
 JV4591'
 JV4591'SURFACE AND UNDERGROUND MARKS ARE BRONZE DISKS SET IN CONCRETE,
 JV4591'
 JV4591'REFERENCE MARK NO.1 - 18-INCH APPLE TREE.
 JV4591'
 JV4591'REFERENCE MARK NO.2 - SW CORNER OF SMALL BARN.
 JV4591'
 JV4591'REFERENCE MARK NO.3 - ANGLE OF CONCRETE HEADWALL OF CULVERT, NW
 JV4591'END.
 JV4591'
 JV4591'AZIMUTH MARK IS MONUMENT NO. 18-6 (MD.GEOD.S.).
 JV4591
 JV4591                          STATION RECOVERY (1943)
 JV4591
 JV4591'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4591'THE STATION IS LOCATED ABOUT 5 MILES SW OF FREDERICK ON
 JV4591'U.S. HIGHWAY 340 (JEFFERSON PIKE) NEAR THE HOME OF M.A. HAUPT.  IT
 JV4591'IS ON A HIGH BANK IN A FENCE CORNER, 33 FEET NW OF CENTER OF
 JV4591'HIGHWAY, 15 FEET W OF A FENCE CORNER, 8 FEET WNW OF THE N AND S
 JV4591'FENCE, 12 FEET SW OF THE E AND W FENCE, 20 FEET SW OF CENTER OF
 JV4591'A PRIVATE DRIVEWAY TO BARN, 22 FEET WNW OF INSIDE CORNER OF
 JV4591'CONCRETE HEADWALL, 45 FEET ESE OF 18-INCH APPLE TREE.  IT IS A
 JV4591'BRONZE U.S. COAST AND GEODETIC SURVEY AND STATE SURVEY DISK
 JV4591'SET IN AN 8- BY 8-INCH CONCRETE POST AND PROJECTS 4 INCHES.
 JV4591'IT IS NOT STAMPED.
 JV4591'
 JV4591'REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE.
 JV4591'
 JV4591'REFERENCE MARK NO.1 IS SW OF THE STATION, 31 FEET NE OF A
 JV4591'FENCE CORNER, 1 FOOT W OF THE N AND S FENCE AND 25 FEET NW OF
 JV4591'HIGHWAY ON A 10-FOOT EMBANKMENT.  IT IS STAMPED 18-5 NO.1 1943
 JV4591'AND PROJECTS 6 INCHES.
 JV4591'
 JV4591'REFERENCE MARK NO.2 IS NNW OF THE STATION, 2 FEET NW OF W
 JV4591'CORNER OF BARN, 36 FEET NNE OF AN 18-INCH APPLE TREE.  IT IS
 JV4591'STAMPED 18-5 NO.2 1943 AND PROJECTS 8 INCHES.
 JV4591'
 JV4591'THE AZIMUTH MARK IS 0.3 MILE SW OF THE STATION ON A HIGH BANK
 JV4591'IN EDGE OF WOODS.  IT IS 7 FEET SE OF A 24-INCH WHITE OAK TREE,
 JV4591'39 FEET SE OF CENTER OF U.S. HIGHWAY 340 AND ABOUT 100 YARDS
 JV4591'NE OF LOG CABIN INN.  IT IS A BRONZE U.S. COAST AND GEODETIC
 JV4591'SURVEY AND STATE SURVEY DISK SET IN A 6- BY 6-INCH CONCRETE
 JV4591'POST AND PROJECTS 6 INCHES.  IT IS NOT STAMPED.
 JV4591'
 JV4591'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 40
 JV4591'AND 340 IN THE W EDGE OF FREDERICK, GO SW ON U.S. HIGHWAY 340 FOR
 JV4591'5.35 MILES TO HOUSE OF MR. HAUPT, CONTINUE STRAIGHT AHEAD FOR
 JV4591'0.05 MILE TO A STEEL GATE AND DRIVEWAY LEADING TO BARN AND THE
 JV4591'STATION ON THE RIGHT.
 JV4591'
 JV4591'A 6-FOOT STAND WILL SEE AN 87-FOOT LIGHT AT STATION BART 1939.
 JV4591'
 JV4591'A 50-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT STATION CENTER.
 JV4591
 JV4591                          STATION RECOVERY (1960)
 JV4591
 JV4591'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 JV4591'STATION, REFERENCE MARKS AND AZIMUTH MARK WERE FOUND IN GOOD
 JV4591'CONDITION.  A NEW DESCRIPTION FOLLOWS--
 JV4591'
 JV4591'STATION IS LOCATED ABOUT 5 MILES SW OF FREDERICK, ON U.S. 340
 JV4591'NEAR THE HOME OF M.A. HAUPT, ON A 6-FOOT BANK AT A DIRT
 JV4591'DRIVEWAY TO A WOODEN FRAME GARAGE ON THE N SIDE OF 340.  IT IS 33
 JV4591'FEET NW OF CENTER LINE OF U.S. 340, 22.8 FEET SW OF CENTER LINE OF
 JV4591'DIRT DRIVEWAY, 31.0 FEET S OF THE SOUTHWEST CORNER OF THE WOODEN
 JV4591'GARAGE, 45.4 FEET SW OF THE SE CORNER OF THE SAME GARAGE, AND
 JV4591'16.0 FEET NW OF FENCE CORNER.  MARK IS A STANDARD BRONZE USC
 JV4591'AND GS DISK SET IN A SQUARE CONCRETE POST PROJECTING 6 INCHES
 JV4591'AND STAMPED 18-5
 JV4591'
 JV4591'R.M. 1 IS 114.6 FEET SW OF THE STATION, 1.0 FEET N OF FENCE
 JV4591'LINE AND 25.0 FEET N OF CENTER LINE OF U.S. 340.
 JV4591'
 JV4591'R.M. 2 IS NW OF THE STATION ON THE N SIDE OF THE GARAGE AND
 JV4591'NOT VISIBLE FROM THE STATION.  (A 8-FOOT ROD CAN BE SEEN.)
 JV4591'
 JV4591'AZIMUTH MARK IS 0.3 MILE SW FROM STATION ON S SIDE OF U.S. 340
 JV4591'ON A 5-FOOT BANK, 38.5 FEET SE OF THE CENTER LINE OF 340,
 JV4591'11.5 FEET E OF POLE AND 43.1 FEET NE OF THE NE CORNER OF A MOTEL
 JV4591'UNIT.
 JV4591'
 JV4591'TO REACH STATION FROM JUNCTION OF U.S. 40 AND 340 IN THE W EDGE
 JV4591'OF FREDERICK, PROCEED SW ON U.S. 340 FOR 5.35 MILES TO STATION ON
 JV4591'RIGHT (0.1 MILE SW OF ELMER DERR ROAD.)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2711 ***********************************************************************
 HU2711  DESIGNATION -  18 BALTO
 HU2711  PID         -  HU2711
 HU2711  STATE/COUNTY-  MD/CAROLINE
 HU2711  COUNTRY     -  US
 HU2711  USGS QUAD   -  PRESTON (2016)
 HU2711
 HU2711                         *CURRENT SURVEY CONTROL
 HU2711  ______________________________________________________________________
 HU2711* NAD 83(1986) POSITION- 38 42 04.     (N) 075 53 52.     (W)   SCALED
 HU2711* NAVD 88 ORTHO HEIGHT -     5.382 (meters)       17.66  (feet) ADJUSTED
 HU2711  ______________________________________________________________________
 HU2711  GEOID HEIGHT    -        -35.116 (meters)                     GEOID18
 HU2711  DYNAMIC HEIGHT  -          5.379 (meters)       17.65  (feet) COMP
 HU2711  MODELED GRAVITY -    980,026.1   (mgal)                       NAVD 88
 HU2711
 HU2711  VERT ORDER      -  SECOND    CLASS I
 HU2711
 HU2711.The horizontal coordinates were scaled from a map and have
 HU2711.an estimated accuracy of +/- 6 seconds.
 HU2711
 HU2711.The orthometric height was determined by differential leveling and
 HU2711.adjusted by the NATIONAL GEODETIC SURVEY
 HU2711.in August 1994.
 HU2711
 HU2711.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2711.GEOID18 height accuracy estimate available here.
 HU2711
 HU2711.Click photographs - Photos may exist for this station.
 HU2711
 HU2711.The dynamic height is computed by dividing the NAVD 88
 HU2711.geopotential number by the normal gravity value computed on the
 HU2711.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2711.degrees latitude (g = 980.6199 gals.).
 HU2711
 HU2711.The modeled gravity was interpolated from observed gravity values.
 HU2711
 HU2711;                    North         East    Units  Estimated Accuracy
 HU2711;SPC MD       -   115,410.      495,880.      MT  (+/- 180 meters Scaled)
 HU2711
 HU2711_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH219839(NAD 83)
 HU2711
 HU2711                          SUPERSEDED SURVEY CONTROL
 HU2711
 HU2711.No superseded survey control is available for this station.
 HU2711
 HU2711_MARKER: P = PIPE CAP
 HU2711_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HU2711_SP_SET: DRIVEN INTO GROUND
 HU2711_STAMPING: 18 BALTO
 HU2711_MARK LOGO: USGS
 HU2711_MAGNETIC: P = MARKER IS A STEEL PIPE
 HU2711_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2711_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2711+SATELLITE: SATELLITE OBSERVATIONS - December 30, 1990
 HU2711
 HU2711  HISTORY     - Date     Condition        Report By
 HU2711  HISTORY     - UNK      MONUMENTED       USGS
 HU2711  HISTORY     - 19901230 GOOD             NGS
 HU2711  HISTORY     - 20061207 MARK NOT FOUND   USPSQD
 HU2711
 HU2711                          STATION DESCRIPTION
 HU2711
 HU2711'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2711'THE MARK IS LOCATED ABOUT 2.45 MI (3.94 KM) SOUTHEAST OF PRESTON,
 HU2711'MARYLAND.
 HU2711'TO REACH FROM THE POST OFFICE IN PRESTON, GO SOUTHEAST ON STATE
 HU2711'HIGHWAY 331 FOR 0.19 MI (0.31 KM) TO A SIDE ROAD RIGHT.  TURN RIGHT
 HU2711'AND GO SOUTHWEST ON STATE HIGHWAY 817 FOR 0.05 MI (0.08 KM) TO A
 HU2711'T-INTERSECTION.  TURN LEFT AND GO SOUTHEAST ON STATE HIGHWAY 817 FOR
 HU2711'0.40 MI (0.64 KM) TO THE MARK ON THE RIGHT.
 HU2711'IT IS 31.1 FT (9.5 M) SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 14.2
 HU2711'FT (4.3 M) SOUTHWEST OF POWERLINE POLE NUMBERED 38413-05456, 45.6 FT
 HU2711'(13.9 M) WEST-NORTHWEST OF TELEPHONE POLE NUMBERED 463, 45.9 FT
 HU2711'(14.0 M) NORTH OF THE NORTH CORNER OF A 1-STORY HOUSE, 269.5 FT
 HU2711'(82.1 M) WEST-NORTHWEST OF A BRIDGE OVER HUNTING CREEK, SET ON THE
 HU2711'TOP OF A 0.25 FT (0.08 M) IRON PIPE PROJECTING 0.25 FT (0.08 M) AND
 HU2711'ABOUT 0.5 FT (0.2 M) HIGHER THAN THE ROAD.
 HU2711
 HU2711                          STATION RECOVERY (2006)
 HU2711
 HU2711'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 HU2711'POLE NUMBER 38413 05456 HAD BEEN REPLACED OR RENUMBERED. EXTENSIVE
 HU2711'PROBING AND METAL DETECTOR USE FAILED TO LOCATE THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7885 ***********************************************************************
 DH7885  DESIGNATION -  18 WDK RESET
 DH7885  PID         -  DH7885
 DH7885  STATE/COUNTY-  MD/WORCESTER
 DH7885  COUNTRY     -  US
 DH7885  USGS QUAD   -  PUBLIC LANDING (2016)
 DH7885
 DH7885                         *CURRENT SURVEY CONTROL
 DH7885  ______________________________________________________________________
 DH7885* NAD 83(1986) POSITION- 38 08 58.0    (N) 075 17 16.5    (W)   HD_HELD2
 DH7885* NAVD 88 ORTHO HEIGHT -     2.758 (meters)        9.05  (feet) ADJUSTED
 DH7885  ______________________________________________________________________
 DH7885  GEOID HEIGHT    -        -36.282 (meters)                     GEOID18
 DH7885  DYNAMIC HEIGHT  -          2.757 (meters)        9.05  (feet) COMP
 DH7885  MODELED GRAVITY -    979,983.5   (mgal)                       NAVD 88
 DH7885
 DH7885  VERT ORDER      -  SECOND    CLASS I
 DH7885
 DH7885.The horizontal coordinates were established by autonomous hand held GPS
 DH7885.observations and have an estimated accuracy of +/- 10 meters.
 DH7885
 DH7885.The orthometric height was determined by differential leveling and
 DH7885.adjusted by the NATIONAL GEODETIC SURVEY
 DH7885.in June 2006.
 DH7885
 DH7885.No vertical observational check was made to the station.
 DH7885
 DH7885.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7885.GEOID18 height accuracy estimate available here.
 DH7885
 DH7885.Click photographs - Photos may exist for this station.
 DH7885
 DH7885.The dynamic height is computed by dividing the NAVD 88
 DH7885.geopotential number by the normal gravity value computed on the
 DH7885.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7885.degrees latitude (g = 980.6199 gals.).
 DH7885
 DH7885.The modeled gravity was interpolated from observed gravity values.
 DH7885
 DH7885;                    North         East    Units  Estimated Accuracy
 DH7885;SPC MD       -    54,998.      550,066.      MT  (+/- 10 meters HH2 GPS)
 DH7885
 DH7885_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7477322435(NAD 83)
 DH7885
 DH7885                          SUPERSEDED SURVEY CONTROL
 DH7885
 DH7885.No superseded survey control is available for this station.
 DH7885
 DH7885_MARKER: DS = TRIANGULATION STATION DISK
 DH7885_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DH7885_SP_SET: BASE
 DH7885_STAMPING: 18 WDK 1963 RESET 1976
 DH7885_MARK LOGO: CGS
 DH7885_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH7885_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH7885_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DH7885+SATELLITE: SATELLITE OBSERVATIONS - December 17, 2003
 DH7885
 DH7885  HISTORY     - Date     Condition        Report By
 DH7885  HISTORY     - 1976     MONUMENTED       NGS
 DH7885  HISTORY     - 20031217 GOOD             MDSHA
 DH7885
 DH7885                          STATION DESCRIPTION
 DH7885
 DH7885'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 DH7885'THE STATION IS LOCATED IN THE TOWN OF PUBLIC LANDING. TO REACH THE
 DH7885'STATION FROM THE COURTHOUSE IN SNOW HILL, GO NORTHEAST ALONG BUSINESS
 DH7885'U.S. 113 FOR 0.15 MI (0.24 KM) TO STATE HIGHWAY 365. TURN RIGHT AND GO
 DH7885'SOUTHEAST ALONG STATE HIGHWAY 365 FOR 5.3 MI (8.53 KM) TO PUBLIC
 DH7885'LANDING. THE BENCH MARK IS SET IN A 2 FOOT SQUARE CONCRETE BASE OF AN
 DH7885'ABANDONED POLE, 153 FT (46.6 M) NORTHWEST OF THE CENTERLINE OF BAYSIDE
 DH7885'ROAD, 21.7 FT (6.6 M) SOUTHWEST OF THE CENTER LINE OF STATE HIGHWAY
 DH7885'365 AND 4.0 FT (1.2 M) EAST OF POWER POLE 163.  NOTE=VM NUMBER 3033
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5863 ***********************************************************************
 JV5863  DESIGNATION -  1800 METERS 1966
 JV5863  PID         -  JV5863
 JV5863  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5863  COUNTRY     -  US
 JV5863  USGS QUAD   -  LAUREL (2016)
 JV5863
 JV5863                         *CURRENT SURVEY CONTROL
 JV5863  ______________________________________________________________________
 JV5863* NAD 83(1991) POSITION- 39 00 58.93952(N) 076 48 52.00588(W)   ADJUSTED
 JV5863* NAVD 88 ORTHO HEIGHT -    50.13  (+/-2cm)      164.5   (feet) VERTCON3
 JV5863  ______________________________________________________________________
 JV5863  GEOID HEIGHT    -        -32.420 (meters)                     GEOID18
 JV5863  LAPLACE CORR    -         -5.44  (seconds)                    DEFLEC18
 JV5863  HORZ ORDER      -  FIRST
 JV5863  VERT ORDER      -  THIRD ? (See Below)
 JV5863
 JV5863.The horizontal coordinates were established by classical geodetic methods
 JV5863.and adjusted by the National Geodetic Survey in January 1992.
 JV5863
 JV5863.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5863.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5863
 JV5863.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5863.GEOID18 height accuracy estimate available here.
 JV5863
 JV5863.The vertical order pertains to the NGVD 29 superseded value.
 JV5863
 JV5863.Click photographs - Photos may exist for this station.
 JV5863
 JV5863.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5863
 JV5863. The following values were computed from the NAD 83(1991) position.
 JV5863
 JV5863;                    North         East     Units Scale Factor Converg.
 JV5863;SPC MD       -   149,840.011   416,069.395   MT  0.99995285   +0 06 59.3
 JV5863;SPC MD       -   491,600.10  1,365,054.34   sFT  0.99995285   +0 06 59.3
 JV5863;UTM  18      - 4,320,159.562   342,914.642   MT  0.99990385   -1 08 33.0
 JV5863
 JV5863!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5863!SPC MD       -   0.99999722  x   0.99995285  =   0.99995007
 JV5863!UTM  18      -   0.99999722  x   0.99990385  =   0.99990107
 JV5863
 JV5863:                Primary Azimuth Mark                     Grid Az
 JV5863:SPC MD       -  PRINCE                                   240 44 30.6
 JV5863:UTM  18      -  PRINCE                                   242 00 02.9
 JV5863
 JV5863_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4291420159(NAD 83)
 JV5863
 JV5863|---------------------------------------------------------------------|
 JV5863| PID    Reference Object                     Distance      Geod. Az  |
 JV5863|                                                           dddmmss.s |
 JV5863| JV5861 PRINCE                              442.875 METERS 2405129.9 |
 JV5863|---------------------------------------------------------------------|
 JV5863
 JV5863                          SUPERSEDED SURVEY CONTROL
 JV5863
 JV5863  NAD 83(1986)-  39 00 58.93757(N)    076 48 52.01695(W) AD(       ) 1
 JV5863  NAD 27      -  39 00 58.54233(N)    076 48 53.12249(W) AD(       ) 1
 JV5863  NGVD 29              50.35   (m)          165.2    (f) LEVELING    3  
 JV5863
 JV5863.Superseded values are not recommended for survey control.
 JV5863
 JV5863.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5863.See file dsdata.pdf to determine how the superseded data were derived.
 JV5863
 JV5863_MARKER: Z = SEE DESCRIPTION
 JV5863_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5863_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5863+STABILITY: SURFACE MOTION
 JV5863
 JV5863  HISTORY     - Date     Condition        Report By
 JV5863  HISTORY     - 1966     MONUMENTED       CGS
 JV5863  HISTORY     - 1979     GOOD             NGS
 JV5863
 JV5863                          STATION DESCRIPTION
 JV5863
 JV5863'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV5863'THE STATION IS LOCATED ABOUT 3-1/2 MILES NORTHWEST OF BOWIE,
 JV5863'MARYLAND, 3-1/2 MILES EAST OF BELTSVILLE, MARYLAND, 3 MILES
 JV5863'SOUTHEAST OF LAUREL, MARYLAND AND 0.2 MILES SOUTH OF THE SOUTH
 JV5863'EDGE OF THE NORTH-SOUTH RUNWAY OF THE BELTSVILLE AGRICULTURE
 JV5863'RESEARCH CENTER AIRPORT.
 JV5863'
 JV5863'TO REACH THE STATION FROM THE TRAFFIC LIGHT AT THE INTERSECTION
 JV5863'OF U.S. HIGHWAY 1 AND POWDER MILL RD AT BELTSVILLE, MARYLAND, GO
 JV5863'EAST ON POWDER MILL RD FOR 0.45 MILE TO THE JUNCTION OF EDMONSTON
 JV5863'ROAD AND THE ENTRANCE TO THE AGRICULTURAL RESEARCH CENTER.
 JV5863'CONTINUE EAST ON POWDER MILL RD, ENTERING THE AGRICULTURAL RESEARCH
 JV5863'CENTER FOR 2.8 MILES TO THE INTERSECTION OF POWDER MILL RD AND
 JV5863'THE BALTIMORE-WASHINGTON PARKWAY (BELTSVILLE EXIT).
 JV5863'CONTINUE EAST ON POWDER MILL RD, UNDER THE PARKWAY FOR 0.3
 JV5863'MILE TO THE JUNCTION OF S.C.S. ROAD AND SIGNS ARC AIRPORT AND C
 JV5863'AND GS SATELLITE TRI.  CONTINUE EAST ON POWDER MILL RD FOR
 JV5863'0.35 MILE TO THE JUNCTION OF SPRINGFIELD RD AND SIGN ARC
 JV5863'AIRPORT AND C AND GS SATELLITE TRI.  BEAR RIGHT AND GO
 JV5863'SOUTHERLY ON SPRINGFIELD RD FOR 0.75 MILE TO A GATE ON THE LEFT,
 JV5863'ENTRANCE TO THE ARC AIRPORT.  TURN LEFT, PASS THROUGH THE GATE AND
 JV5863'GO SOUTHEAST ON A BLACK-TOP ROAD FOR 0.15 MILE TO THE NORTH
 JV5863'EDGE OF THE EAST-WEST RUNWAY OF THE AIRPORT.  TURN LEFT AND
 JV5863'GO EAST ON THE NORTH EDGE OF THE RUNWAY FOR 0.55 MILE TO THE
 JV5863'WEST EDGE OF THE NORTH-SOUTH RUNWAY.  TURN RIGHT, CROSS THE
 JV5863'EAST-WEST RUNWAY AND CONTINUE SOUTH ON THE WEST EDGE OF THE
 JV5863'NORTH-SOUTH RUNWAY FOR 0.7 MILE TO A GRAVEL ROAD AT THE SOUTH
 JV5863'EDGE OF THE RUNWAY.  CONTINUE SOUTH ON THE GRAVEL ROAD FOR 0.05
 JV5863'MILE TO A FORK AND A GATE ON THE RIGHT.  BEAR RIGHT, PASS
 JV5863'THROUGH THE GATE AND GO SOUTHWEST ON A TRACK ROAD FOR 0.1
 JV5863'MILE.  THENCE TURN LEFT, LEAVE THE TRACK ROAD AND GO SOUTH ACROSS
 JV5863'PASTURE FOR 0.1 MILE TO THE STATION ON THE LEFT, 35.5 FEET
 JV5863'NORTH-NORTHWEST OF A 30-INCH OAK TREE.
 JV5863'
 JV5863'THE STATION IS THE CENTER OF AN IRREGULAR SHAPED METAL TRIBRACH,
 JV5863'BOLTED TO THE TOP OF A ROUND METAL PLATE THAT IS CEMENTED TO THE
 JV5863'TOP OF A CYLINDRICAL CONCRETE MONUMENT 18 INCHES IN DIAMETER AND
 JV5863'PROJECTING 4 FEET ABOVE THE SURFACE OF THE GROUND.  IT IS STAMPED
 JV5863'1800 METERS.
 JV5863
 JV5863                          STATION RECOVERY (1979)
 JV5863
 JV5863'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (CGG)
 JV5863'THE STATION MARK WAS RECOVERED AS PREVIOUSLY DESCRIBED BY
 JV5863'L.G. BURDINE IN 1966 AND IN GOOD CONDITION.
 JV5863'
 JV5863'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5863'3 MILES SOUTHEAST OF LAUREL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1018 ***********************************************************************
 JV1018  DESIGNATION -  1800 WSSC
 JV1018  PID         -  JV1018
 JV1018  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1018  COUNTRY     -  US
 JV1018  USGS QUAD   -  BELTSVILLE (2016)
 JV1018
 JV1018                         *CURRENT SURVEY CONTROL
 JV1018  ______________________________________________________________________
 JV1018* NAD 83(1986) POSITION- 39 02 49.     (N) 076 54 59.     (W)   SCALED
 JV1018* NAVD 88 ORTHO HEIGHT -    56.277 (meters)      184.64  (feet) ADJUSTED
 JV1018  ______________________________________________________________________
 JV1018  GEOID HEIGHT    -        -32.132 (meters)                     GEOID18
 JV1018  DYNAMIC HEIGHT  -         56.247 (meters)      184.54  (feet) COMP
 JV1018  MODELED GRAVITY -    980,101.3   (mgal)                       NAVD 88
 JV1018
 JV1018  VERT ORDER      -  SECOND    CLASS 0
 JV1018
 JV1018.The horizontal coordinates were scaled from a map and have
 JV1018.an estimated accuracy of +/- 6 seconds.
 JV1018
 JV1018.The orthometric height was determined by differential leveling and
 JV1018.adjusted by the NATIONAL GEODETIC SURVEY
 JV1018.in June 1991.
 JV1018
 JV1018.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1018.GEOID18 height accuracy estimate available here.
 JV1018
 JV1018.Click photographs - Photos may exist for this station.
 JV1018
 JV1018.The dynamic height is computed by dividing the NAVD 88
 JV1018.geopotential number by the normal gravity value computed on the
 JV1018.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1018.degrees latitude (g = 980.6199 gals.).
 JV1018
 JV1018.The modeled gravity was interpolated from observed gravity values.
 JV1018
 JV1018;                    North         East    Units  Estimated Accuracy
 JV1018;SPC MD       -   153,220.      407,240.      MT  (+/- 180 meters Scaled)
 JV1018
 JV1018_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ341237(NAD 83)
 JV1018
 JV1018                          SUPERSEDED SURVEY CONTROL
 JV1018
 JV1018  NGVD 29 (11/26/84)   56.499  (m)          185.36   (f) ADJUSTED    2 0
 JV1018
 JV1018.Superseded values are not recommended for survey control.
 JV1018
 JV1018.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1018.See file dsdata.pdf to determine how the superseded data were derived.
 JV1018
 JV1018_MARKER: Z = SEE DESCRIPTION
 JV1018_SETTING: 0 = UNSPECIFIED SETTING
 JV1018_SP_SET: IRON PIPE
 JV1018_STAMPING: WSSC 1800
 JV1018_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1018
 JV1018  HISTORY     - Date     Condition        Report By
 JV1018  HISTORY     - UNK      MONUMENTED       WSSC
 JV1018  HISTORY     - 1951     GOOD             CGS
 JV1018
 JV1018                          STATION DESCRIPTION
 JV1018
 JV1018'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1018'1 MI NW FROM BELTSVILLE.
 JV1018'1.0 MILE NORTHWEST ALONG STATE HIGHWAY 212 FROM ITS INTERSECTION
 JV1018'WITH U.S. HIGHWAY 1 AT BELTSVILLE, PRINCE GEORGES COUNTY, 26.8
 JV1018'FEET SOUTH OF THE SOUTH EDGE OF THE CONCRETE PAVEMENT, AND 3.8
 JV1018'FEET EAST OF A LINE OF PRIVET HEDGE.  A WASHINGTON SUBURBAN
 JV1018'SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED WSSC 1800 AND
 JV1018'SET IN THE TOP OF AN IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1050 ***********************************************************************
 JV1050  DESIGNATION -  1801 WSSC
 JV1050  PID         -  JV1050
 JV1050  STATE/COUNTY-  MD/MONTGOMERY
 JV1050  COUNTRY     -  US
 JV1050  USGS QUAD   -  BELTSVILLE (2016)
 JV1050
 JV1050                         *CURRENT SURVEY CONTROL
 JV1050  ______________________________________________________________________
 JV1050* NAD 83(1986) POSITION- 39 06 36.     (N) 076 56 55.     (W)   SCALED
 JV1050* NAVD 88 ORTHO HEIGHT -   146.06  (+/-2cm)      479.2   (feet) VERTCON3
 JV1050  ______________________________________________________________________
 JV1050  GEOID HEIGHT    -        -32.040 (meters)                     GEOID18
 JV1050  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1050
 JV1050.The horizontal coordinates were scaled from a map and have
 JV1050.an estimated accuracy of +/- 6 seconds.
 JV1050
 JV1050.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1050.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1050
 JV1050.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1050.GEOID18 height accuracy estimate available here.
 JV1050
 JV1050.The vertical order pertains to the NGVD 29 superseded value.
 JV1050
 JV1050.Click photographs - Photos may exist for this station.
 JV1050
 JV1050;                    North         East    Units  Estimated Accuracy
 JV1050;SPC MD       -   160,220.      404,450.      MT  (+/- 180 meters Scaled)
 JV1050
 JV1050_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ315307(NAD 83)
 JV1050
 JV1050                          SUPERSEDED SURVEY CONTROL
 JV1050
 JV1050  NGVD 29 (11/26/84)  146.262  (m)          479.86   (f) ADJUSTED    2 0
 JV1050
 JV1050.Superseded values are not recommended for survey control.
 JV1050
 JV1050.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1050.See file dsdata.pdf to determine how the superseded data were derived.
 JV1050
 JV1050_MARKER: B = BOLT
 JV1050_SETTING: 0 = UNSPECIFIED SETTING
 JV1050_SP_SET: IRON PIPE
 JV1050_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1050
 JV1050  HISTORY     - Date     Condition        Report By
 JV1050  HISTORY     - UNK      MONUMENTED       WSSC
 JV1050  HISTORY     - 1939     GOOD             WSSC
 JV1050
 JV1050                          STATION DESCRIPTION
 JV1050
 JV1050'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1050'0.8 MI NW FROM BURTONSVILLE.
 JV1050'ON SANDY SPRING ROAD, AT UNION CEMETERY, ON THE NORTH SIDE OF THE
 JV1050'ROAD, AND 5.5 FEET NORTHEAST OF A CONCRETE GATEPOST IN AN IRON
 JV1050'FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2643 ***********************************************************************
 JV2643  DESIGNATION -  1803 WSSC
 JV2643  PID         -  JV2643
 JV2643  STATE/COUNTY-  MD/MONTGOMERY
 JV2643  COUNTRY     -  US
 JV2643  USGS QUAD   -  SANDY SPRING (2016)
 JV2643
 JV2643                         *CURRENT SURVEY CONTROL
 JV2643  ______________________________________________________________________
 JV2643* NAD 83(1986) POSITION- 39 11 35.     (N) 077 01 08.     (W)   SCALED
 JV2643* NAVD 88 ORTHO HEIGHT -   147.62  (+/-2cm)      484.3   (feet) VERTCON3
 JV2643  ______________________________________________________________________
 JV2643  GEOID HEIGHT    -        -31.896 (meters)                     GEOID18
 JV2643  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2643
 JV2643.The horizontal coordinates were scaled from a map and have
 JV2643.an estimated accuracy of +/- 6 seconds.
 JV2643
 JV2643.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2643.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2643
 JV2643.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2643.GEOID18 height accuracy estimate available here.
 JV2643
 JV2643.The vertical order pertains to the NGVD 29 superseded value.
 JV2643
 JV2643.Click photographs - Photos may exist for this station.
 JV2643
 JV2643;                    North         East    Units  Estimated Accuracy
 JV2643;SPC MD       -   169,440.      398,370.      MT  (+/- 180 meters Scaled)
 JV2643
 JV2643_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ256401(NAD 83)
 JV2643
 JV2643                          SUPERSEDED SURVEY CONTROL
 JV2643
 JV2643  NGVD 29 (11/26/84)  147.838  (m)          485.03   (f) ADJUSTED    2 0
 JV2643
 JV2643.Superseded values are not recommended for survey control.
 JV2643
 JV2643.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2643.See file dsdata.pdf to determine how the superseded data were derived.
 JV2643
 JV2643_MARKER: B = BOLT
 JV2643_SETTING: 0 = UNSPECIFIED SETTING
 JV2643_SP_SET: IRON PIPE
 JV2643_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2643
 JV2643  HISTORY     - Date     Condition        Report By
 JV2643  HISTORY     - UNK      MONUMENTED       WSSC
 JV2643  HISTORY     - 1944     GOOD             WSSC
 JV2643
 JV2643                          STATION DESCRIPTION
 JV2643
 JV2643'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2643'AT BRIGHTON.
 JV2643'ON THE ASHTON-SUNSHINE ROAD, ABOUT 250 FEET WEST OF THE ROAD, ON
 JV2643'THE WEST SIDE OF THE BRIGHTON CHURCH, IN THE CHURCH LAWN, AND IN
 JV2643'LINE WITH THE WEST SIDE OF THE CHURCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1046 ***********************************************************************
 JV1046  DESIGNATION -  1805 WSSC
 JV1046  PID         -  JV1046
 JV1046  STATE/COUNTY-  MD/MONTGOMERY
 JV1046  COUNTRY     -  US
 JV1046  USGS QUAD   -  BELTSVILLE (2016)
 JV1046
 JV1046                         *CURRENT SURVEY CONTROL
 JV1046  ______________________________________________________________________
 JV1046* NAD 83(1986) POSITION- 39 06 29.     (N) 076 55 19.     (W)   SCALED
 JV1046* NAVD 88 ORTHO HEIGHT -   141.50  (+/-2cm)      464.2   (feet) VERTCON3
 JV1046  ______________________________________________________________________
 JV1046  GEOID HEIGHT    -        -32.086 (meters)                     GEOID18
 JV1046  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1046
 JV1046.The horizontal coordinates were scaled from a map and have
 JV1046.an estimated accuracy of +/- 6 seconds.
 JV1046
 JV1046.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1046.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1046
 JV1046.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1046.GEOID18 height accuracy estimate available here.
 JV1046
 JV1046.The vertical order pertains to the NGVD 29 superseded value.
 JV1046
 JV1046.Click photographs - Photos may exist for this station.
 JV1046
 JV1046;                    North         East    Units  Estimated Accuracy
 JV1046;SPC MD       -   160,010.      406,750.      MT  (+/- 180 meters Scaled)
 JV1046
 JV1046_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ338305(NAD 83)
 JV1046
 JV1046                          SUPERSEDED SURVEY CONTROL
 JV1046
 JV1046  NGVD 29 (11/26/84)  141.708  (m)          464.92   (f) ADJUSTED    2 0
 JV1046
 JV1046.Superseded values are not recommended for survey control.
 JV1046
 JV1046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1046.See file dsdata.pdf to determine how the superseded data were derived.
 JV1046
 JV1046_MARKER: B = BOLT
 JV1046_SETTING: 0 = UNSPECIFIED SETTING
 JV1046_SP_SET: IRON PIPE
 JV1046_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1046
 JV1046  HISTORY     - Date     Condition        Report By
 JV1046  HISTORY     - UNK      MONUMENTED       WSSC
 JV1046  HISTORY     - 1939     GOOD             WSSC
 JV1046
 JV1046                          STATION DESCRIPTION
 JV1046
 JV1046'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1046'0.8 MI E FROM BURTONSVILLE.
 JV1046'ON SANDY SPRING ROAD, ON THE WEST SIDE OF A ROAD LEADING SOUTH,
 JV1046'22.7 FEET SOUTH OF THE CENTERLINE OF THE MAIN ROAD, 52.5 FEET
 JV1046'WEST ACROSS THE SIDE ROAD FROM POLE 308495, 89.4 FEET EAST OF
 JV1046'POLE 308096, 43 FEET SOUTH ACROSS THE MAIN ROAD FROM TELEPHONE POLE
 JV1046'742, AND 8.7 FEET NORTH OF A TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1067 ***********************************************************************
 JV1067  DESIGNATION -  1806 WSSC
 JV1067  PID         -  JV1067
 JV1067  STATE/COUNTY-  MD/MONTGOMERY
 JV1067  COUNTRY     -  US
 JV1067  USGS QUAD   -  CLARKSVILLE (2016)
 JV1067
 JV1067                         *CURRENT SURVEY CONTROL
 JV1067  ______________________________________________________________________
 JV1067* NAD 83(1986) POSITION- 39 09 45.     (N) 076 58 26.     (W)   SCALED
 JV1067* NAVD 88 ORTHO HEIGHT -    91.01  (+/-2cm)      298.6   (feet) VERTCON3
 JV1067  ______________________________________________________________________
 JV1067  GEOID HEIGHT    -        -31.985 (meters)                     GEOID18
 JV1067  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1067
 JV1067.The horizontal coordinates were scaled from a map and have
 JV1067.an estimated accuracy of +/- 6 seconds.
 JV1067
 JV1067.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1067.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1067
 JV1067.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1067.GEOID18 height accuracy estimate available here.
 JV1067
 JV1067.The vertical order pertains to the NGVD 29 superseded value.
 JV1067
 JV1067.Click photographs - Photos may exist for this station.
 JV1067
 JV1067;                    North         East    Units  Estimated Accuracy
 JV1067;SPC MD       -   166,050.      402,260.      MT  (+/- 180 meters Scaled)
 JV1067
 JV1067_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ294366(NAD 83)
 JV1067
 JV1067                          SUPERSEDED SURVEY CONTROL
 JV1067
 JV1067  NGVD 29 (11/26/84)   91.222  (m)          299.28   (f) ADJUSTED    2 0
 JV1067
 JV1067.Superseded values are not recommended for survey control.
 JV1067
 JV1067.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1067.See file dsdata.pdf to determine how the superseded data were derived.
 JV1067
 JV1067_MARKER: B = BOLT
 JV1067_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1067_SP_SET: CONCRETE
 JV1067_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1067
 JV1067  HISTORY     - Date     Condition        Report By
 JV1067  HISTORY     - UNK      MONUMENTED       WSSC
 JV1067  HISTORY     - 1939     GOOD             WSSC
 JV1067
 JV1067                          STATION DESCRIPTION
 JV1067
 JV1067'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1067'2.5 MI E FROM ASHTON.
 JV1067'ON THE HIGHLAND ROAD (U.S. HIGHWAY 29), AT SNELL BRIDGE OVER THE
 JV1067'PATUXENT RIVER, 120 FEET NORTHWEST OF THE NORTHWEST CORNER OF A
 JV1067'PARAPET WALL, 55.3 FEET NORTHWEST OF A 5-INCH LOCUST TREE, 42.8
 JV1067'FEET WEST OF THE END OF THE GUARDRAIL, 21 FEET EAST OF AN 8-INCH
 JV1067'SYCAMORE TREE, AND 15.3 FEET SOUTHWEST OF THE CENTERLINE OF AN
 JV1067'OLD STATE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1035 ***********************************************************************
 JV1035  DESIGNATION -  1808 WSSC
 JV1035  PID         -  JV1035
 JV1035  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1035  COUNTRY     -  US
 JV1035  USGS QUAD   -  LAUREL (2016)
 JV1035
 JV1035                         *CURRENT SURVEY CONTROL
 JV1035  ______________________________________________________________________
 JV1035* NAD 83(1986) POSITION- 39 05 37.     (N) 076 52 21.     (W)   SCALED
 JV1035* NAVD 88 ORTHO HEIGHT -    78.29  (+/-2cm)      256.9   (feet) VERTCON3
 JV1035  ______________________________________________________________________
 JV1035  GEOID HEIGHT    -        -32.198 (meters)                     GEOID18
 JV1035  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1035
 JV1035.The horizontal coordinates were scaled from a map and have
 JV1035.an estimated accuracy of +/- 6 seconds.
 JV1035
 JV1035.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1035.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1035
 JV1035.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1035.GEOID18 height accuracy estimate available here.
 JV1035
 JV1035.The vertical order pertains to the NGVD 29 superseded value.
 JV1035
 JV1035.Click photographs - Photos may exist for this station.
 JV1035
 JV1035;                    North         East    Units  Estimated Accuracy
 JV1035;SPC MD       -   158,410.      411,030.      MT  (+/- 180 meters Scaled)
 JV1035
 JV1035_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ380288(NAD 83)
 JV1035
 JV1035                          SUPERSEDED SURVEY CONTROL
 JV1035
 JV1035  NGVD 29 (11/26/84)   78.510  (m)          257.58   (f) ADJUSTED    2 0
 JV1035
 JV1035.Superseded values are not recommended for survey control.
 JV1035
 JV1035.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1035.See file dsdata.pdf to determine how the superseded data were derived.
 JV1035
 JV1035_MARKER: B = BOLT
 JV1035_SETTING: 0 = UNSPECIFIED SETTING
 JV1035_SP_SET: IRON PIPE
 JV1035_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1035
 JV1035  HISTORY     - Date     Condition        Report By
 JV1035  HISTORY     - UNK      MONUMENTED       WSSC
 JV1035  HISTORY     - 1939     GOOD             WSSC
 JV1035
 JV1035                          STATION DESCRIPTION
 JV1035
 JV1035'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1035'1 MI SW FROM LAUREL.
 JV1035'ON CHERRY LANE, ABOUT 1 MILE WEST OF THE JUNCTION OF U.S. HIGHWAY
 JV1035'1, ON THE NORTH SIDE OF THE ROAD, AT THE ENTRANCE TO THE BROWN
 JV1035'RESIDENCE, 81.9 FEET NORTHWEST OF A 10-INCH CEDAR TREE, 54.5
 JV1035'FEET NORTHWEST OF A 14-INCH TRIPLE OAK TREE, 8.4 FEET SOUTH OF
 JV1035'A 14-INCH OAK TREE, AND 7.6 FEET EAST OF A 10-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1066 ***********************************************************************
 JV1066  DESIGNATION -  1809 A WSSC
 JV1066  PID         -  JV1066
 JV1066  STATE/COUNTY-  MD/MONTGOMERY
 JV1066  COUNTRY     -  US
 JV1066  USGS QUAD   -  CLARKSVILLE (2016)
 JV1066
 JV1066                         *CURRENT SURVEY CONTROL
 JV1066  ______________________________________________________________________
 JV1066* NAD 83(1986) POSITION- 39 09 37.     (N) 076 58 55.     (W)   SCALED
 JV1066* NAVD 88 ORTHO HEIGHT -   123.04  (+/-2cm)      403.7   (feet) VERTCON3
 JV1066  ______________________________________________________________________
 JV1066  GEOID HEIGHT    -        -31.971 (meters)                     GEOID18
 JV1066  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1066
 JV1066.The horizontal coordinates were scaled from a map and have
 JV1066.an estimated accuracy of +/- 6 seconds.
 JV1066
 JV1066.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1066.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1066
 JV1066.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1066.GEOID18 height accuracy estimate available here.
 JV1066
 JV1066.The vertical order pertains to the NGVD 29 superseded value.
 JV1066
 JV1066.Click photographs - Photos may exist for this station.
 JV1066
 JV1066;                    North         East    Units  Estimated Accuracy
 JV1066;SPC MD       -   165,800.      401,560.      MT  (+/- 180 meters Scaled)
 JV1066
 JV1066_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ287364(NAD 83)
 JV1066
 JV1066                          SUPERSEDED SURVEY CONTROL
 JV1066
 JV1066  NGVD 29 (11/26/84)  123.250  (m)          404.36   (f) ADJUSTED    2 0
 JV1066
 JV1066.Superseded values are not recommended for survey control.
 JV1066
 JV1066.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1066.See file dsdata.pdf to determine how the superseded data were derived.
 JV1066
 JV1066_MARKER: Z = SEE DESCRIPTION
 JV1066_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1066_SP_SET: TREE
 JV1066_STAMPING: WSSC 1809 A
 JV1066_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1066
 JV1066  HISTORY     - Date     Condition        Report By
 JV1066  HISTORY     - UNK      MONUMENTED       WSSC
 JV1066  HISTORY     - 1939     GOOD             WSSC
 JV1066
 JV1066                          STATION DESCRIPTION
 JV1066
 JV1066'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1066'2 MI E FROM ASHTON.
 JV1066'ON THE HIGHLAND ROAD (U.S. HIGHWAY 29), 0.4 MILE SOUTH OF
 JV1066'PATUXENT RIVER, AT THE TOP OF A HILL, ON THE SOUTH SIDE OF THE
 JV1066'ROAD, AND IN THE NORTHEAST SIDE OF AN 8-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1065 ***********************************************************************
 JV1065  DESIGNATION -  1809 WSSC
 JV1065  PID         -  JV1065
 JV1065  STATE/COUNTY-  MD/MONTGOMERY
 JV1065  COUNTRY     -  US
 JV1065  USGS QUAD   -  CLARKSVILLE (2016)
 JV1065
 JV1065                         *CURRENT SURVEY CONTROL
 JV1065  ______________________________________________________________________
 JV1065* NAD 83(1986) POSITION- 39 09 37.     (N) 076 59 14.     (W)   SCALED
 JV1065* NAVD 88 ORTHO HEIGHT -   131.33  (+/-2cm)      430.9   (feet) VERTCON3
 JV1065  ______________________________________________________________________
 JV1065  GEOID HEIGHT    -        -31.962 (meters)                     GEOID18
 JV1065  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1065
 JV1065.The horizontal coordinates were scaled from a map and have
 JV1065.an estimated accuracy of +/- 6 seconds.
 JV1065
 JV1065.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1065.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1065
 JV1065.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1065.GEOID18 height accuracy estimate available here.
 JV1065
 JV1065.The vertical order pertains to the NGVD 29 superseded value.
 JV1065
 JV1065.Click photographs - Photos may exist for this station.
 JV1065
 JV1065;                    North         East    Units  Estimated Accuracy
 JV1065;SPC MD       -   165,800.      401,100.      MT  (+/- 180 meters Scaled)
 JV1065
 JV1065_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ283364(NAD 83)
 JV1065
 JV1065                          SUPERSEDED SURVEY CONTROL
 JV1065
 JV1065  NGVD 29 (11/26/84)  131.542  (m)          431.57   (f) ADJUSTED    2 0
 JV1065
 JV1065.Superseded values are not recommended for survey control.
 JV1065
 JV1065.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1065.See file dsdata.pdf to determine how the superseded data were derived.
 JV1065
 JV1065_MARKER: B = BOLT
 JV1065_SETTING: 0 = UNSPECIFIED SETTING
 JV1065_SP_SET: IRON PIPE
 JV1065_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1065
 JV1065  HISTORY     - Date     Condition        Report By
 JV1065  HISTORY     - UNK      MONUMENTED       WSSC
 JV1065  HISTORY     - 1939     GOOD             WSSC
 JV1065
 JV1065                          STATION DESCRIPTION
 JV1065
 JV1065'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1065'1.7 MI E FROM ASHTON.
 JV1065'ON THE HIGHLAND ROAD (U.S. HIGHWAY 29), 0.8 MILE WEST OF SNELL
 JV1065'BRIDGE OVER PATUXENT RIVER, AT THE Y-JUNCTION OF A ROAD LEADING
 JV1065'SOUTH, IN THE CENTER OF THE Y, 18 FEET SOUTH OF THE CENTERLINE OF
 JV1065'THE HIGHWAY, 86 FEET WEST OF A POLE, 55.2 FEET EAST OF TELEPHONE
 JV1065'POLE 11400, AND 11.9 FEET WEST OF A 4-INCH CHERRY TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2636 ***********************************************************************
 JV2636  DESIGNATION -  1813 WSSC
 JV2636  PID         -  JV2636
 JV2636  STATE/COUNTY-  MD/MONTGOMERY
 JV2636  COUNTRY     -  US
 JV2636  USGS QUAD   -  SANDY SPRING (2016)
 JV2636
 JV2636                         *CURRENT SURVEY CONTROL
 JV2636  ______________________________________________________________________
 JV2636* NAD 83(1986) POSITION- 39 09 45.     (N) 077 00 53.     (W)   SCALED
 JV2636* NAVD 88 ORTHO HEIGHT -   141.21  (+/-2cm)      463.3   (feet) VERTCON3
 JV2636  ______________________________________________________________________
 JV2636  GEOID HEIGHT    -        -31.910 (meters)                     GEOID18
 JV2636  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2636
 JV2636.The horizontal coordinates were scaled from a map and have
 JV2636.an estimated accuracy of +/- 6 seconds.
 JV2636
 JV2636.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2636.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2636
 JV2636.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2636.GEOID18 height accuracy estimate available here.
 JV2636
 JV2636.The vertical order pertains to the NGVD 29 superseded value.
 JV2636
 JV2636.Click photographs - Photos may exist for this station.
 JV2636
 JV2636;                    North         East    Units  Estimated Accuracy
 JV2636;SPC MD       -   166,050.      398,730.      MT  (+/- 180 meters Scaled)
 JV2636
 JV2636_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ259367(NAD 83)
 JV2636
 JV2636                          SUPERSEDED SURVEY CONTROL
 JV2636
 JV2636  NGVD 29 (11/26/84)  141.420  (m)          463.98   (f) ADJUSTED    2 0
 JV2636
 JV2636.Superseded values are not recommended for survey control.
 JV2636
 JV2636.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2636.See file dsdata.pdf to determine how the superseded data were derived.
 JV2636
 JV2636_MARKER: B = BOLT
 JV2636_SETTING: 0 = UNSPECIFIED SETTING
 JV2636_SP_SET: IRON PIPE
 JV2636_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2636
 JV2636  HISTORY     - Date     Condition        Report By
 JV2636  HISTORY     - UNK      MONUMENTED       WSSC
 JV2636  HISTORY     - 1944     GOOD             WSSC
 JV2636  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2636
 JV2636                          STATION DESCRIPTION
 JV2636
 JV2636'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2636'1 MI N FROM ASHTON.
 JV2636'ON THE ASHTON-BRIGHTON ROAD (STATE HIGHWAY 116), 2.4 MILES
 JV2636'SOUTH OF BRIGHTON, ON THE EAST SIDE OF THE ROAD, ON THE SOUTH
 JV2636'LINE OF THE MAJOR DRAKE PROPERTY, 18.9 FEET EAST OF THE STONE
 JV2636'AT THE PROPERTY CORNER, 51.9 FEET EAST ACROSS THE ROAD FROM
 JV2636'TELEPHONE POLE 2801, AND 39.5 FEET NORTH OF THE NORTHWEST
 JV2636'CORNER OF A HOUSE.
 JV2636
 JV2636                          STATION RECOVERY (1995)
 JV2636
 JV2636'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2636'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2646 ***********************************************************************
 JV2646  DESIGNATION -  1818 WSSC
 JV2646  PID         -  JV2646
 JV2646  STATE/COUNTY-  MD/MONTGOMERY
 JV2646  COUNTRY     -  US
 JV2646  USGS QUAD   -  SANDY SPRING (2016)
 JV2646
 JV2646                         *CURRENT SURVEY CONTROL
 JV2646  ______________________________________________________________________
 JV2646* NAD 83(1986) POSITION- 39 12 32.     (N) 077 02 21.     (W)   SCALED
 JV2646* NAVD 88 ORTHO HEIGHT -   145.52  (+/-2cm)      477.4   (feet) VERTCON3
 JV2646  ______________________________________________________________________
 JV2646  GEOID HEIGHT    -        -31.861 (meters)                     GEOID18
 JV2646  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2646
 JV2646.The horizontal coordinates were scaled from a map and have
 JV2646.an estimated accuracy of +/- 6 seconds.
 JV2646
 JV2646.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2646.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2646
 JV2646.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2646.GEOID18 height accuracy estimate available here.
 JV2646
 JV2646.The vertical order pertains to the NGVD 29 superseded value.
 JV2646
 JV2646.Click photographs - Photos may exist for this station.
 JV2646
 JV2646;                    North         East    Units  Estimated Accuracy
 JV2646;SPC MD       -   171,200.      396,620.      MT  (+/- 180 meters Scaled)
 JV2646
 JV2646_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ239419(NAD 83)
 JV2646
 JV2646                          SUPERSEDED SURVEY CONTROL
 JV2646
 JV2646  NGVD 29 (11/26/84)  145.732  (m)          478.12   (f) ADJUSTED    2 0
 JV2646
 JV2646.Superseded values are not recommended for survey control.
 JV2646
 JV2646.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2646.See file dsdata.pdf to determine how the superseded data were derived.
 JV2646
 JV2646_MARKER: B = BOLT
 JV2646_SETTING: 0 = UNSPECIFIED SETTING
 JV2646_SP_SET: IRON PIPE
 JV2646_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2646
 JV2646  HISTORY     - Date     Condition        Report By
 JV2646  HISTORY     - UNK      MONUMENTED       WSSC
 JV2646  HISTORY     - 1944     GOOD             WSSC
 JV2646
 JV2646                          STATION DESCRIPTION
 JV2646
 JV2646'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2646'1.3 MI SE FROM SUNSHINE.
 JV2646'ON THE BRIGHTON-SUNSHINE ROAD, 1.5 MILES NORTH OF BRIGHTON, ON THE
 JV2646'EAST SIDE OF THE ROAD, AND ON THE NORTH SIDE OF THE ENTRANCE TO
 JV2646'THE FRED HAWKINS RESIDENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1024 ***********************************************************************
 JV1024  DESIGNATION -  1819 WSSC
 JV1024  PID         -  JV1024
 JV1024  STATE/COUNTY-  MD/MONTGOMERY
 JV1024  COUNTRY     -  US
 JV1024  USGS QUAD   -  BELTSVILLE (2016)
 JV1024
 JV1024                         *CURRENT SURVEY CONTROL
 JV1024  ______________________________________________________________________
 JV1024* NAD 83(1986) POSITION- 39 04 09.     (N) 076 57 08.     (W)   SCALED
 JV1024* NAVD 88 ORTHO HEIGHT -   111.06  (+/-2cm)      364.4   (feet) VERTCON3
 JV1024  ______________________________________________________________________
 JV1024  GEOID HEIGHT    -        -32.053 (meters)                     GEOID18
 JV1024  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1024
 JV1024.The horizontal coordinates were scaled from a map and have
 JV1024.an estimated accuracy of +/- 6 seconds.
 JV1024
 JV1024.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1024.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1024
 JV1024.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1024.GEOID18 height accuracy estimate available here.
 JV1024
 JV1024.The vertical order pertains to the NGVD 29 superseded value.
 JV1024
 JV1024.Click photographs - Photos may exist for this station.
 JV1024
 JV1024;                    North         East    Units  Estimated Accuracy
 JV1024;SPC MD       -   155,690.      404,140.      MT  (+/- 180 meters Scaled)
 JV1024
 JV1024_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ311262(NAD 83)
 JV1024
 JV1024                          SUPERSEDED SURVEY CONTROL
 JV1024
 JV1024  NGVD 29 (11/26/84)  111.271  (m)          365.06   (f) ADJUSTED    2 0
 JV1024
 JV1024.Superseded values are not recommended for survey control.
 JV1024
 JV1024.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1024.See file dsdata.pdf to determine how the superseded data were derived.
 JV1024
 JV1024_MARKER: Z = SEE DESCRIPTION
 JV1024_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1024_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1024
 JV1024  HISTORY     - Date     Condition        Report By
 JV1024  HISTORY     - UNK      MONUMENTED       WSSC
 JV1024  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1024  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1024
 JV1024                          STATION DESCRIPTION
 JV1024
 JV1024'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1024'0.7 MI SE FROM FAIRLAND.
 JV1024'THIS MARK WAS SEARCHED FOR BY MEANS OF A PHOTOSTAT COPY OF THE
 JV1024'ORIGINAL W.S.S.D. DESCRIPTION, WHICH SHOWS IT TO BE ON THE SOUTH
 JV1024'OR SOUTHWEST SIDE OF THE FAIRLAND-BELTSVILLE ROAD (BIGELOW ROAD)
 JV1024'AT A DISTANCE OF 0.7 MILE FROM FAIRLAND.  THE DETAILED REFERENCES
 JV1024'ARE TO TWO WALNUT TREES AND A FENCE BETWEEN AN APPLE ORCHARD AND
 JV1024'THE ROAD.  HOWEVER, SOME OF THE TREES SEEM TO HAVE BEEN REMOVED
 JV1024'AND WE COULD NOT SEEM TO FIND THE RIGHT PAIR TO INSURE RECOVERY
 JV1024'OF THE MARK.  IT MAY STILL BE IN PLACE BUT WE DID NOT FIND IT.
 JV1024
 JV1024                          STATION RECOVERY (1951)
 JV1024
 JV1024'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV1024'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0670 ***********************************************************************
 JV0670  DESIGNATION -  182
 JV0670  PID         -  JV0670
 JV0670  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0670  COUNTRY     -  US
 JV0670  USGS QUAD   -  BELTSVILLE (2016)
 JV0670
 JV0670                         *CURRENT SURVEY CONTROL
 JV0670  ______________________________________________________________________
 JV0670* NAD 83(1986) POSITION- 39 03 09.     (N) 076 54 09.     (W)   SCALED
 JV0670* NAVD 88 ORTHO HEIGHT -    55.225 (meters)      181.18  (feet) ADJUSTED
 JV0670  ______________________________________________________________________
 JV0670  GEOID HEIGHT    -        -32.160 (meters)                     GEOID18
 JV0670  DYNAMIC HEIGHT  -         55.196 (meters)      181.09  (feet) COMP
 JV0670  MODELED GRAVITY -    980,101.6   (mgal)                       NAVD 88
 JV0670
 JV0670  VERT ORDER      -  FIRST     CLASS I
 JV0670
 JV0670.The horizontal coordinates were scaled from a map and have
 JV0670.an estimated accuracy of +/- 6 seconds.
 JV0670
 JV0670.The orthometric height was determined by differential leveling and
 JV0670.adjusted by the NATIONAL GEODETIC SURVEY
 JV0670.in June 1991.
 JV0670
 JV0670.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0670.GEOID18 height accuracy estimate available here.
 JV0670
 JV0670.Click photographs - Photos may exist for this station.
 JV0670
 JV0670.The dynamic height is computed by dividing the NAVD 88
 JV0670.geopotential number by the normal gravity value computed on the
 JV0670.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0670.degrees latitude (g = 980.6199 gals.).
 JV0670
 JV0670.The modeled gravity was interpolated from observed gravity values.
 JV0670
 JV0670;                    North         East    Units  Estimated Accuracy
 JV0670;SPC MD       -   153,840.      408,440.      MT  (+/- 180 meters Scaled)
 JV0670
 JV0670_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ353243(NAD 83)
 JV0670
 JV0670                          SUPERSEDED SURVEY CONTROL
 JV0670
 JV0670  NGVD 29 (11/26/84)   55.450  (m)          181.92   (f) ADJUSTED    1 1
 JV0670
 JV0670.Superseded values are not recommended for survey control.
 JV0670
 JV0670.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0670.See file dsdata.pdf to determine how the superseded data were derived.
 JV0670
 JV0670_MARKER: DB = BENCH MARK DISK
 JV0670_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0670_SP_SET: BUILDING
 JV0670_STAMPING: 182 MARYLAND
 JV0670_MARK LOGO: USGS
 JV0670_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0670
 JV0670  HISTORY     - Date     Condition        Report By
 JV0670  HISTORY     - UNK      MONUMENTED       USGS
 JV0670  HISTORY     - 1971     GOOD             NGS
 JV0670
 JV0670                          STATION DESCRIPTION
 JV0670
 JV0670'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0670'1.5 MI NE FROM BELTSVILLE.
 JV0670'ABOUT 1.2 MILES NORTHEAST ALONG U.S. HIGHWAY 1 FROM THE
 JV0670'INTERSECTION OF STATE HIGHWAY 212 AT BELTSVILLE, THENCE 0.3
 JV0670'MILE NORTHWEST ALONG A PRIVATE PAVED ROAD TO THE AMMENDALE NORMAL
 JV0670'INSTITUTE, SET VERTICALLY IN THE SOUTHEAST FACE AND 0.7 FOOT
 JV0670'NORTHEAST OF THE SOUTH CORNER OF A LARGE BRICK AND STONE BUILDING
 JV0670'AT THE INSTITUTE, AND ABOUT 6 INCHES ABOVE THE LEVEL OF THE WALKWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1190 ***********************************************************************
 HV1190  DESIGNATION -  1821 WSSC
 HV1190  PID         -  HV1190
 HV1190  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1190  COUNTRY     -  US
 HV1190  USGS QUAD   -  LANHAM (2016)
 HV1190
 HV1190                         *CURRENT SURVEY CONTROL
 HV1190  ______________________________________________________________________
 HV1190* NAD 83(1986) POSITION- 38 55 45.     (N) 076 51 34.     (W)   SCALED
 HV1190* NAVD 88 ORTHO HEIGHT -    36.06  (+/-2cm)      118.3   (feet) VERTCON3
 HV1190  ______________________________________________________________________
 HV1190  GEOID HEIGHT    -        -32.407 (meters)                     GEOID18
 HV1190  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1190
 HV1190.The horizontal coordinates were scaled from a map and have
 HV1190.an estimated accuracy of +/- 6 seconds.
 HV1190
 HV1190.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1190.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1190
 HV1190.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1190.GEOID18 height accuracy estimate available here.
 HV1190
 HV1190.The vertical order pertains to the NGVD 29 superseded value.
 HV1190
 HV1190.Click photographs - Photos may exist for this station.
 HV1190
 HV1190;                    North         East    Units  Estimated Accuracy
 HV1190;SPC MD       -   140,150.      412,190.      MT  (+/- 180 meters Scaled)
 HV1190
 HV1190_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ388105(NAD 83)
 HV1190
 HV1190                          SUPERSEDED SURVEY CONTROL
 HV1190
 HV1190  NGVD 29 (11/26/84)   36.301  (m)          119.10   (f) ADJUSTED    2 0
 HV1190
 HV1190.Superseded values are not recommended for survey control.
 HV1190
 HV1190.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1190.See file dsdata.pdf to determine how the superseded data were derived.
 HV1190
 HV1190_MARKER: B = BOLT
 HV1190_SETTING: 0 = UNSPECIFIED SETTING
 HV1190_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1190
 HV1190  HISTORY     - Date     Condition        Report By
 HV1190  HISTORY     - UNK      MONUMENTED       WSSC
 HV1190  HISTORY     - 1944     GOOD             WSSC
 HV1190
 HV1190                          STATION DESCRIPTION
 HV1190
 HV1190'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1190'AT GLENARDEN.
 HV1190'AT THE FIRST BAPTIST CHURCH, IN THE CHURCHYARD, AND NEAR THE
 HV1190'SIDE FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1184 ***********************************************************************
 HV1184  DESIGNATION -  1824 WSSC
 HV1184  PID         -  HV1184
 HV1184  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1184  COUNTRY     -  US
 HV1184  USGS QUAD   -  LANHAM (2016)
 HV1184
 HV1184                         *CURRENT SURVEY CONTROL
 HV1184  ______________________________________________________________________
 HV1184* NAD 83(1986) POSITION- 38 57 03.     (N) 076 51 20.     (W)   SCALED
 HV1184* NAVD 88 ORTHO HEIGHT -    53.70  (+/-2cm)      176.2   (feet) VERTCON3
 HV1184  ______________________________________________________________________
 HV1184  GEOID HEIGHT    -        -32.387 (meters)                     GEOID18
 HV1184  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1184
 HV1184.The horizontal coordinates were scaled from a map and have
 HV1184.an estimated accuracy of +/- 6 seconds.
 HV1184
 HV1184.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1184.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1184
 HV1184.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1184.GEOID18 height accuracy estimate available here.
 HV1184
 HV1184.The vertical order pertains to the NGVD 29 superseded value.
 HV1184
 HV1184.Click photographs - Photos may exist for this station.
 HV1184
 HV1184;                    North         East    Units  Estimated Accuracy
 HV1184;SPC MD       -   142,560.      412,520.      MT  (+/- 180 meters Scaled)
 HV1184
 HV1184_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ392129(NAD 83)
 HV1184
 HV1184                          SUPERSEDED SURVEY CONTROL
 HV1184
 HV1184  NGVD 29 (11/26/84)   53.931  (m)          176.94   (f) ADJUSTED    2 0
 HV1184
 HV1184.Superseded values are not recommended for survey control.
 HV1184
 HV1184.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1184.See file dsdata.pdf to determine how the superseded data were derived.
 HV1184
 HV1184_MARKER: B = BOLT
 HV1184_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1184_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1184
 HV1184  HISTORY     - Date     Condition        Report By
 HV1184  HISTORY     - UNK      MONUMENTED       WSSC
 HV1184  HISTORY     - 1944     GOOD             WSSC
 HV1184
 HV1184                          STATION DESCRIPTION
 HV1184
 HV1184'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1184'0.8 MI N FROM ARDMORE.
 HV1184'ON THE LANHAM-ARDMORE ROAD, ON THE WEST SIDE OF THE ROAD, IN
 HV1184'THE LAWN OF THE CARLSON HOME, 34 FEET WEST OF THE FENCE, 33.5
 HV1184'FEET NORTHEAST OF AN 18-INCH TWIN OAK TREE, AND 13.9 FEET
 HV1184'NORTH OF ANOTHER TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1078 ***********************************************************************
 JV1078  DESIGNATION -  1831
 JV1078  PID         -  JV1078
 JV1078  STATE/COUNTY-  MD/HOWARD
 JV1078  COUNTRY     -  US
 JV1078  USGS QUAD   -  CLARKSVILLE (2016)
 JV1078
 JV1078                         *CURRENT SURVEY CONTROL
 JV1078  ______________________________________________________________________
 JV1078* NAD 83(1986) POSITION- 39 08 09.0    (N) 076 52 40.1    (W)   HD_HELD2
 JV1078* NAVD 88 ORTHO HEIGHT -   122.94  (+/-2cm)      403.3   (feet) VERTCON3
 JV1078  ______________________________________________________________________
 JV1078  GEOID HEIGHT    -        -32.164 (meters)                     GEOID18
 JV1078  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1078
 JV1078.The horizontal coordinates were established by autonomous hand held GPS
 JV1078.observations and have an estimated accuracy of +/- 10 meters.
 JV1078
 JV1078.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1078.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1078
 JV1078.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1078.GEOID18 height accuracy estimate available here.
 JV1078
 JV1078.The vertical order pertains to the NGVD 29 superseded value.
 JV1078
 JV1078.Click photographs - Photos may exist for this station.
 JV1078
 JV1078;                    North         East    Units  Estimated Accuracy
 JV1078;SPC MD       -   163,092.      410,565.      MT  (+/- 10 meters HH2 GPS)
 JV1078
 JV1078_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3770233529(NAD 83)
 JV1078
 JV1078                          SUPERSEDED SURVEY CONTROL
 JV1078
 JV1078  NGVD 29 (11/26/84)  123.156  (m)          404.05   (f) ADJUSTED    2 0
 JV1078
 JV1078.Superseded values are not recommended for survey control.
 JV1078
 JV1078.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1078.See file dsdata.pdf to determine how the superseded data were derived.
 JV1078
 JV1078_MARKER: DD = SURVEY DISK
 JV1078_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1078_SP_SET: IRON PIPE
 JV1078_STAMPING: 1831
 JV1078_MARK LOGO: WSSC
 JV1078_PROJECTION: RECESSED 18 CENTIMETERS
 JV1078_MAGNETIC: P = MARKER IS A STEEL PIPE
 JV1078_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1078
 JV1078  HISTORY     - Date     Condition        Report By
 JV1078  HISTORY     - UNK      MONUMENTED       WSSC
 JV1078  HISTORY     - 1939     GOOD             WSSC
 JV1078  HISTORY     - 1964     GOOD             CGS
 JV1078  HISTORY     - 20201028 GOOD             PROFLN
 JV1078
 JV1078                          STATION DESCRIPTION
 JV1078
 JV1078'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1078'2.3 MI NW FROM LAUREL.
 JV1078'IN HOWARD COUNTY, ABOUT 2.3 MILES NORTHWEST ALONG THE LAUREL-FULTON
 JV1078'ROAD FROM THE PATUXENT RIVER BRIDGE AT THE END OF MAIN STREET AT
 JV1078'LAUREL, PRINCE GEORGES COUNTY, ABOUT 1.2 MILES SOUTHEAST OF
 JV1078'SCAGGSVILLE, HOWARD COUNTY, ABOUT 0.1 MILE EAST OF HARDINS STORE,
 JV1078'IN LINE WITH THE EAST SIDE OF AN ELECTRICAL TRANSMISSION TOWER
 JV1078'NORTH OF THE ROAD, 97.9 FEET NORTHEAST OF THE NORTHWEST LEG OF A
 JV1078'TRANSMISSION TOWER SOUTH OF THE ROAD, 94.1 FEET NORTH OF THE
 JV1078'NORTHEAST LEG OF THE SAME TOWER, 109 FEET WEST OF A 16-INCH CEDAR
 JV1078'TREE SOUTH OF THE ROAD, 13.8 FEET EAST OF POWER TRANSMISSION LINE
 JV1078'POLE 3149.49, 19.1 FEET SOUTH OF THE CENTER LINE OF THE ROAD,
 JV1078'AND 4 FEET SOUTH OF THE RIGHT-OF-WAY FENCE.  A WASHINGTON SUBURBAN
 JV1078'SANITARY DISTRICT STANDARD DISK, STAMPED 1831 AND SET IN THE TOP
 JV1078'OF A CONCRETE-FILLED IRON PIPE.
 JV1078
 JV1078                          STATION RECOVERY (1964)
 JV1078
 JV1078'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JV1078'RECOVERED IN GOOD CONDITION.
 JV1078
 JV1078                          STATION RECOVERY (2020)
 JV1078
 JV1078'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV1078'THE MARK IS AT A LARGE POWER LINE CROSSING SCAGGSVILLE ROAD, 19.5 FT
 JV1078'(5.9 M) SOUTHWEST OF THE ROAD, 15 FT (4.6 M) SOUTHEAST OF THE WESTERLY
 JV1078'OF TWO TRANSMISSION LINES, 3 FT (0.9 M) NORTHEAST OF A CABLE FENCE AND
 JV1078'A WSSC WITNESS POST AT THE SOUTHWEST EDGE OF A GRAVEL AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1079 ***********************************************************************
 JV1079  DESIGNATION -  1831 A
 JV1079  PID         -  JV1079
 JV1079  STATE/COUNTY-  MD/HOWARD
 JV1079  COUNTRY     -  US
 JV1079  USGS QUAD   -  CLARKSVILLE (2016)
 JV1079
 JV1079                         *CURRENT SURVEY CONTROL
 JV1079  ______________________________________________________________________
 JV1079* NAD 83(1986) POSITION- 39 08 07.     (N) 076 52 41.     (W)   SCALED
 JV1079* NAVD 88 ORTHO HEIGHT -   123.49  (+/-2cm)      405.2   (feet) VERTCON3
 JV1079  ______________________________________________________________________
 JV1079  GEOID HEIGHT    -        -32.164 (meters)                     GEOID18
 JV1079  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1079
 JV1079.The horizontal coordinates were scaled from a map and have
 JV1079.an estimated accuracy of +/- 6 seconds.
 JV1079
 JV1079.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1079.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1079
 JV1079.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1079.GEOID18 height accuracy estimate available here.
 JV1079
 JV1079.The vertical order pertains to the NGVD 29 superseded value.
 JV1079
 JV1079.Click photographs - Photos may exist for this station.
 JV1079
 JV1079;                    North         East    Units  Estimated Accuracy
 JV1079;SPC MD       -   163,030.      410,540.      MT  (+/- 180 meters Scaled)
 JV1079
 JV1079_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ376334(NAD 83)
 JV1079
 JV1079                          SUPERSEDED SURVEY CONTROL
 JV1079
 JV1079  NGVD 29 (11/26/84)  123.701  (m)          405.84   (f) ADJUSTED    2 0
 JV1079
 JV1079.Superseded values are not recommended for survey control.
 JV1079
 JV1079.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1079.See file dsdata.pdf to determine how the superseded data were derived.
 JV1079
 JV1079_MARKER: X = CHISELED CROSS
 JV1079_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1079_SP_SET: TOWER
 JV1079_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1079
 JV1079  HISTORY     - Date     Condition        Report By
 JV1079  HISTORY     - UNK      MONUMENTED       WSSC
 JV1079  HISTORY     - 1939     GOOD             WSSC
 JV1079  HISTORY     - 1964     GOOD             CGS
 JV1079
 JV1079                          STATION DESCRIPTION
 JV1079
 JV1079'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1079'2.3 MI NW FROM LAUREL.
 JV1079'IN HOWARD COUNTY, ABOUT 2.3 MILES NORTHWEST ALONG THE LAUREL-FULTON
 JV1079'ROAD FROM THE PATUXENT RIVER BRIDGE AT THE END OF MAIN STREET AT
 JV1079'LAUREL, PRINCE GEORGES COUNTY, ABOUT 1.2 MILES SOUTHEAST OF
 JV1079'SCAGGSVILLE, HOWARD COUNTY, ABOUT 0.1 MILE EAST OF HARDINS STORE,
 JV1079'AT AN ELECTRICAL TRANSMISSION TOWER SOUTH OF THE ROAD, AND ON THE
 JV1079'ANCHOR BOLT AT THE SOUTHEAST CORNER.  A CHISELED CROSS.
 JV1079
 JV1079                          STATION RECOVERY (1964)
 JV1079
 JV1079'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JV1079'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1080 ***********************************************************************
 JV1080  DESIGNATION -  1831 B WSSC
 JV1080  PID         -  JV1080
 JV1080  STATE/COUNTY-  MD/HOWARD
 JV1080  COUNTRY     -  US
 JV1080  USGS QUAD   -  CLARKSVILLE (2016)
 JV1080
 JV1080                         *CURRENT SURVEY CONTROL
 JV1080  ______________________________________________________________________
 JV1080* NAD 83(1986) POSITION- 39 08 37.     (N) 076 53 29.     (W)   SCALED
 JV1080* NAVD 88 ORTHO HEIGHT -   122.26  (+/-2cm)      401.1   (feet) VERTCON3
 JV1080  ______________________________________________________________________
 JV1080  GEOID HEIGHT    -        -32.137 (meters)                     GEOID18
 JV1080  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1080
 JV1080.The horizontal coordinates were scaled from a map and have
 JV1080.an estimated accuracy of +/- 6 seconds.
 JV1080
 JV1080.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1080.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1080
 JV1080.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1080.GEOID18 height accuracy estimate available here.
 JV1080
 JV1080.The vertical order pertains to the NGVD 29 superseded value.
 JV1080
 JV1080.Click photographs - Photos may exist for this station.
 JV1080
 JV1080;                    North         East    Units  Estimated Accuracy
 JV1080;SPC MD       -   163,950.      409,390.      MT  (+/- 180 meters Scaled)
 JV1080
 JV1080_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ365344(NAD 83)
 JV1080
 JV1080                          SUPERSEDED SURVEY CONTROL
 JV1080
 JV1080  NGVD 29 (11/26/84)  122.475  (m)          401.82   (f) ADJUSTED    2 0
 JV1080
 JV1080.Superseded values are not recommended for survey control.
 JV1080
 JV1080.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1080.See file dsdata.pdf to determine how the superseded data were derived.
 JV1080
 JV1080_MARKER: Q = CHISELED SQUARE
 JV1080_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1080_SP_SET: CULVERT
 JV1080_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1080
 JV1080  HISTORY     - Date     Condition        Report By
 JV1080  HISTORY     - UNK      MONUMENTED       WSSC
 JV1080  HISTORY     - 1939     GOOD             WSSC
 JV1080
 JV1080                          STATION DESCRIPTION
 JV1080
 JV1080'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1080'0.3 MI E FROM SCAGGSVILLE.
 JV1080'ABOUT 0.3 MILE EAST ALONG THE LAUREL-FULTON ROAD FROM THE ROAD
 JV1080'INTERSECTION AT SCAGGSVILLE, HOWARD COUNTY, AT THE JUNCTION OF A
 JV1080'ROAD LEADING NORTH, AT A CONCRETE CULVERT UNDER THE MAIN ROAD,
 JV1080'AND ON THE CENTER OF THE TOP OF THE NORTH HEAD WALL.  A CHISELED
 JV1080'SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1037 ***********************************************************************
 JV1037  DESIGNATION -  1835 WSSC
 JV1037  PID         -  JV1037
 JV1037  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1037  COUNTRY     -  US
 JV1037  USGS QUAD   -  BELTSVILLE (2016)
 JV1037
 JV1037                         *CURRENT SURVEY CONTROL
 JV1037  ______________________________________________________________________
 JV1037* NAD 83(1986) POSITION- 39 06 00.     (N) 076 53 22.     (W)   SCALED
 JV1037* NAVD 88 ORTHO HEIGHT -   107.67  (+/-2cm)      353.2   (feet) VERTCON3
 JV1037  ______________________________________________________________________
 JV1037  GEOID HEIGHT    -        -32.156 (meters)                     GEOID18
 JV1037  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1037
 JV1037.The horizontal coordinates were scaled from a map and have
 JV1037.an estimated accuracy of +/- 6 seconds.
 JV1037
 JV1037.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1037.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1037
 JV1037.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1037.GEOID18 height accuracy estimate available here.
 JV1037
 JV1037.The vertical order pertains to the NGVD 29 superseded value.
 JV1037
 JV1037.Click photographs - Photos may exist for this station.
 JV1037
 JV1037;                    North         East    Units  Estimated Accuracy
 JV1037;SPC MD       -   159,110.      409,560.      MT  (+/- 180 meters Scaled)
 JV1037
 JV1037_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ366295(NAD 83)
 JV1037
 JV1037                          SUPERSEDED SURVEY CONTROL
 JV1037
 JV1037  NGVD 29 (11/26/84)  107.879  (m)          353.93   (f) ADJUSTED    2 0
 JV1037
 JV1037.Superseded values are not recommended for survey control.
 JV1037
 JV1037.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1037.See file dsdata.pdf to determine how the superseded data were derived.
 JV1037
 JV1037_MARKER: DD = SURVEY DISK
 JV1037_SETTING: 0 = UNSPECIFIED SETTING
 JV1037_SP_SET: IRON PIPE
 JV1037_STAMPING: 1835
 JV1037_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1037
 JV1037  HISTORY     - Date     Condition        Report By
 JV1037  HISTORY     - UNK      MONUMENTED       WSSC
 JV1037  HISTORY     - 1939     GOOD             WSSC
 JV1037
 JV1037                          STATION DESCRIPTION
 JV1037
 JV1037'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1037'AT WILLIS SCHOOL.
 JV1037'ON SANDY SPRING ROAD, NEAR THE JUNCTION OF CHERRY LANE, 103.4
 JV1037'FEET WEST OF THE NEAR CORNER OF THE FARMERS COMMUNITY CLUB
 JV1037'BUILDING, 35 FEET NORTH OF THE CENTERLINE OF THE ROAD, AND 2 FEET
 JV1037'EAST OF A WOODEN FENCE BETWEEN THE PUBLIC SCHOOL PROPERTY AND THE
 JV1037'FARMERS COMMUNITY CLUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2667 ***********************************************************************
 JV2667  DESIGNATION -  1836 WSSC
 JV2667  PID         -  JV2667
 JV2667  STATE/COUNTY-  MD/MONTGOMERY
 JV2667  COUNTRY     -  US
 JV2667  USGS QUAD   -  SANDY SPRING (2016)
 JV2667
 JV2667                         *CURRENT SURVEY CONTROL
 JV2667  ______________________________________________________________________
 JV2667* NAD 83(1986) POSITION- 39 08 40.     (N) 077 02 35.     (W)   SCALED
 JV2667* NAVD 88 ORTHO HEIGHT -   154.49  (+/-2cm)      506.9   (feet) VERTCON3
 JV2667  ______________________________________________________________________
 JV2667  GEOID HEIGHT    -        -31.863 (meters)                     GEOID18
 JV2667  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2667
 JV2667.The horizontal coordinates were scaled from a map and have
 JV2667.an estimated accuracy of +/- 6 seconds.
 JV2667
 JV2667.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2667.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2667
 JV2667.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2667.GEOID18 height accuracy estimate available here.
 JV2667
 JV2667.The vertical order pertains to the NGVD 29 superseded value.
 JV2667
 JV2667.Click photographs - Photos may exist for this station.
 JV2667
 JV2667;                    North         East    Units  Estimated Accuracy
 JV2667;SPC MD       -   164,040.      396,280.      MT  (+/- 180 meters Scaled)
 JV2667
 JV2667_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ234347(NAD 83)
 JV2667
 JV2667                          SUPERSEDED SURVEY CONTROL
 JV2667
 JV2667  NGVD 29 (11/26/84)  154.702  (m)          507.55   (f) ADJUSTED    2 0
 JV2667
 JV2667.Superseded values are not recommended for survey control.
 JV2667
 JV2667.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2667.See file dsdata.pdf to determine how the superseded data were derived.
 JV2667
 JV2667_MARKER: DD = SURVEY DISK
 JV2667_SETTING: 0 = UNSPECIFIED SETTING
 JV2667_SP_SET: IRON PIPE
 JV2667_STAMPING: 1836
 JV2667_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2667
 JV2667  HISTORY     - Date     Condition        Report By
 JV2667  HISTORY     - UNK      MONUMENTED       WSSC
 JV2667  HISTORY     - 1944     GOOD             WSSC
 JV2667  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2667
 JV2667                          STATION DESCRIPTION
 JV2667
 JV2667'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2667'1 MI W FROM SANDY SPRING.
 JV2667'ON STATE HIGHWAY 108, WEST OF THE JUNCTION OF THE NORWOOD ROAD
 JV2667'AND FRANCES LATTIE INN, ON THE WEST SIDE OF A PRIVATE DRIVE
 JV2667'LEADING SOUTH, AND ON THE SOUTH SIDE OF THE HIGHWAY.
 JV2667
 JV2667                          STATION RECOVERY (1995)
 JV2667
 JV2667'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2667'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2666 ***********************************************************************
 JV2666  DESIGNATION -  1840 WSSC
 JV2666  PID         -  JV2666
 JV2666  STATE/COUNTY-  MD/MONTGOMERY
 JV2666  COUNTRY     -  US
 JV2666  USGS QUAD   -  SANDY SPRING (2016)
 JV2666
 JV2666                         *CURRENT SURVEY CONTROL
 JV2666  ______________________________________________________________________
 JV2666* NAD 83(1986) POSITION- 39 09 12.     (N) 077 04 05.     (W)   SCALED
 JV2666* NAVD 88 ORTHO HEIGHT -   165.53  (+/-2cm)      543.1   (feet) VERTCON3
 JV2666  ______________________________________________________________________
 JV2666  GEOID HEIGHT    -        -31.817 (meters)                     GEOID18
 JV2666  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2666
 JV2666.The horizontal coordinates were scaled from a map and have
 JV2666.an estimated accuracy of +/- 6 seconds.
 JV2666
 JV2666.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2666.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2666
 JV2666.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2666.GEOID18 height accuracy estimate available here.
 JV2666
 JV2666.The vertical order pertains to the NGVD 29 superseded value.
 JV2666
 JV2666.Click photographs - Photos may exist for this station.
 JV2666
 JV2666;                    North         East    Units  Estimated Accuracy
 JV2666;SPC MD       -   165,030.      394,120.      MT  (+/- 180 meters Scaled)
 JV2666
 JV2666_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ213358(NAD 83)
 JV2666
 JV2666                          SUPERSEDED SURVEY CONTROL
 JV2666
 JV2666  NGVD 29 (11/26/84)  165.734  (m)          543.75   (f) ADJUSTED    2 0
 JV2666
 JV2666.Superseded values are not recommended for survey control.
 JV2666
 JV2666.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2666.See file dsdata.pdf to determine how the superseded data were derived.
 JV2666
 JV2666_MARKER: DD = SURVEY DISK
 JV2666_SETTING: 0 = UNSPECIFIED SETTING
 JV2666_SP_SET: IRON PIPE
 JV2666_STAMPING: 1840
 JV2666_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2666
 JV2666  HISTORY     - Date     Condition        Report By
 JV2666  HISTORY     - UNK      MONUMENTED       WSSC
 JV2666  HISTORY     - 1967     POOR             MDSRC
 JV2666  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2666
 JV2666                          STATION DESCRIPTION
 JV2666
 JV2666'DESCRIBED BY MD STATE ROADS COMM 1967
 JV2666'AT OLNEY.
 JV2666'ON STATE HIGHWAY 108, 400 FEET WEST OF THE INTERSECTION OF STATE
 JV2666'HIGHWAY 97, AND 23.8 FEET SOUTH OF THE CONCRETE HIGHWAY.  BRONZE
 JV2666'DISC IN IRON PIPE.  NOTE-- BEEN HIT BY GRADER - LEANING 20 DEG.
 JV2666
 JV2666                          STATION RECOVERY (1995)
 JV2666
 JV2666'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2666'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1344 ***********************************************************************
 HV1344  DESIGNATION -  1841 WSSC
 HV1344  PID         -  HV1344
 HV1344  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1344  COUNTRY     -  US
 HV1344  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1344
 HV1344                         *CURRENT SURVEY CONTROL
 HV1344  ______________________________________________________________________
 HV1344* NAD 83(1986) POSITION- 38 55 53.     (N) 076 56 08.     (W)   SCALED
 HV1344* NAVD 88 ORTHO HEIGHT -     7.95  (+/-2cm)       26.1   (feet) VERTCON3
 HV1344  ______________________________________________________________________
 HV1344  GEOID HEIGHT    -        -32.209 (meters)                     GEOID18
 HV1344  VERT ORDER      -  ? (See Below)
 HV1344
 HV1344.The horizontal coordinates were scaled from a map and have
 HV1344.an estimated accuracy of +/- 6 seconds.
 HV1344
 HV1344.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1344.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1344
 HV1344.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1344.GEOID18 height accuracy estimate available here.
 HV1344
 HV1344.The vertical order pertains to the NGVD 29 superseded value.
 HV1344
 HV1344.Click photographs - Photos may exist for this station.
 HV1344
 HV1344;                    North         East    Units  Estimated Accuracy
 HV1344;SPC MD       -   140,390.      405,590.      MT  (+/- 180 meters Scaled)
 HV1344
 HV1344_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ322109(NAD 83)
 HV1344
 HV1344                          SUPERSEDED SURVEY CONTROL
 HV1344
 HV1344  NGVD 29 (11/26/84)    8.186  (m)           26.86   (f) ADJUSTED       
 HV1344
 HV1344.Superseded values are not recommended for survey control.
 HV1344
 HV1344.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1344.See file dsdata.pdf to determine how the superseded data were derived.
 HV1344
 HV1344_MARKER: DD = SURVEY DISK
 HV1344_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1344_SP_SET: WALL OF FLUSH TANK
 HV1344_STAMPING: 1841
 HV1344_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1344
 HV1344  HISTORY     - Date     Condition        Report By
 HV1344  HISTORY     - UNK      MONUMENTED       WSSC
 HV1344  HISTORY     - 1944     GOOD             WSSC
 HV1344
 HV1344                          STATION DESCRIPTION
 HV1344
 HV1344'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1344'0.8 MI S FROM BLADENSBURG.
 HV1344'ON THE BALTIMORE AND OHIO RAILROAD FREIGHT LINE, 125 FEET WEST
 HV1344'OF THE TRACK, AT THE BLADENSBURG SEWAGE DISPOSAL PLANT, AND IN
 HV1344'THE EAST WALL OF THE NORTHEAST FLUSH TANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1219 ***********************************************************************
 HV1219  DESIGNATION -  1844
 HV1219  PID         -  HV1219
 HV1219  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1219  COUNTRY     -  US
 HV1219  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1219
 HV1219                         *CURRENT SURVEY CONTROL
 HV1219  ______________________________________________________________________
 HV1219* NAD 83(1986) POSITION- 38 53 09.     (N) 076 54 12.     (W)   SCALED
 HV1219* NAVD 88 ORTHO HEIGHT -    42.72  (+/-2cm)      140.2   (feet) VERTCON3
 HV1219  ______________________________________________________________________
 HV1219  GEOID HEIGHT    -        -32.354 (meters)                     GEOID18
 HV1219  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1219
 HV1219.The horizontal coordinates were scaled from a map and have
 HV1219.an estimated accuracy of +/- 6 seconds.
 HV1219
 HV1219.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1219.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1219
 HV1219.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1219.GEOID18 height accuracy estimate available here.
 HV1219
 HV1219.The vertical order pertains to the NGVD 29 superseded value.
 HV1219
 HV1219.Click photographs - Photos may exist for this station.
 HV1219
 HV1219;                    North         East    Units  Estimated Accuracy
 HV1219;SPC MD       -   135,340.      408,390.      MT  (+/- 180 meters Scaled)
 HV1219
 HV1219_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ349058(NAD 83)
 HV1219
 HV1219                          SUPERSEDED SURVEY CONTROL
 HV1219
 HV1219  NGVD 29 (11/26/84)   42.965  (m)          140.96   (f) ADJUSTED    2 0
 HV1219
 HV1219.Superseded values are not recommended for survey control.
 HV1219
 HV1219.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1219.See file dsdata.pdf to determine how the superseded data were derived.
 HV1219
 HV1219_MARKER: DD = SURVEY DISK
 HV1219_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1219_SP_SET: SCHOOL BUILDING
 HV1219_STAMPING: 1844
 HV1219_MARK LOGO: WSSC
 HV1219_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1219_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1219+SATELLITE: SATELLITE OBSERVATIONS - October 09, 2024
 HV1219
 HV1219  HISTORY     - Date     Condition        Report By
 HV1219  HISTORY     - UNK      MONUMENTED       WSSC
 HV1219  HISTORY     - 1944     GOOD             WSSC
 HV1219  HISTORY     - 19900118 GOOD             WSSC
 HV1219  HISTORY     - 20241009 GOOD             MDSHA
 HV1219
 HV1219                          STATION DESCRIPTION
 HV1219
 HV1219'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1219'AT SEAT PLEASANT.
 HV1219'ON CENTRAL AVENUE, JUST EAST OF THE INTERSECTION OF ROLLINS
 HV1219'AVENUE, AT LYNDON HILL SCHOOL, AT THE BASEMENT ENTRANCE AT THE
 HV1219'FRONT OF THE BUILDING, AND JUST WEST OF THE EAST DOOR.
 HV1219
 HV1219                          STATION RECOVERY (1990)
 HV1219
 HV1219'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 HV1219'RECOVERED IN GOOD CONDITION.
 HV1219
 HV1219                          STATION RECOVERY (2024)
 HV1219
 HV1219'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 HV1219'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1347 ***********************************************************************
 HV1347  DESIGNATION -  1846 WSSC
 HV1347  PID         -  HV1347
 HV1347  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1347  COUNTRY     -  US
 HV1347  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1347
 HV1347                         *CURRENT SURVEY CONTROL
 HV1347  ______________________________________________________________________
 HV1347* NAD 83(1986) POSITION- 38 55 57.     (N) 076 56 15.     (W)   SCALED
 HV1347* NAVD 88 ORTHO HEIGHT -     4.65  (+/-2cm)       15.3   (feet) VERTCON3
 HV1347  ______________________________________________________________________
 HV1347  GEOID HEIGHT    -        -32.203 (meters)                     GEOID18
 HV1347  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1347
 HV1347.The horizontal coordinates were scaled from a map and have
 HV1347.an estimated accuracy of +/- 6 seconds.
 HV1347
 HV1347.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1347.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1347
 HV1347.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1347.GEOID18 height accuracy estimate available here.
 HV1347
 HV1347.The vertical order pertains to the NGVD 29 superseded value.
 HV1347
 HV1347.Click photographs - Photos may exist for this station.
 HV1347
 HV1347;                    North         East    Units  Estimated Accuracy
 HV1347;SPC MD       -   140,520.      405,420.      MT  (+/- 180 meters Scaled)
 HV1347
 HV1347_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ320110(NAD 83)
 HV1347
 HV1347                          SUPERSEDED SURVEY CONTROL
 HV1347
 HV1347  NGVD 29 (11/26/84)    4.884  (m)           16.02   (f) ADJUSTED    2 0
 HV1347
 HV1347.Superseded values are not recommended for survey control.
 HV1347
 HV1347.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1347.See file dsdata.pdf to determine how the superseded data were derived.
 HV1347
 HV1347_MARKER: DD = SURVEY DISK
 HV1347_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1347_SP_SET: OUTLET VALVE
 HV1347_STAMPING: 1846
 HV1347_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1347
 HV1347  HISTORY     - Date     Condition        Report By
 HV1347  HISTORY     - UNK      MONUMENTED       WSSC
 HV1347  HISTORY     - 1944     GOOD             WSSC
 HV1347
 HV1347                          STATION DESCRIPTION
 HV1347
 HV1347'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1347'0.5 MI S FROM BLADENSBURG.
 HV1347'AT THE BLADENSBURG SEWAGE DISPOSAL PLANT, ON THE TOP OF THE WEST
 HV1347'DIKE, AND IN THE CENTER OF THE OUTLET VALVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1089 ***********************************************************************
 JV1089  DESIGNATION -  1847
 JV1089  PID         -  JV1089
 JV1089  STATE/COUNTY-  MD/HOWARD
 JV1089  COUNTRY     -  US
 JV1089  USGS QUAD   -  CLARKSVILLE (2016)
 JV1089
 JV1089                         *CURRENT SURVEY CONTROL
 JV1089  ______________________________________________________________________
 JV1089* NAD 83(1986) POSITION- 39 10 44.     (N) 076 57 27.     (W)   SCALED
 JV1089* NAVD 88 ORTHO HEIGHT -   159.278 (meters)      522.56  (feet) POSTED
 JV1089  ______________________________________________________________________
 JV1089  GEOID HEIGHT    -        -32.005 (meters)                     GEOID18
 JV1089  DYNAMIC HEIGHT  -        159.19  (meters)      522.3   (feet) COMP
 JV1089  MODELED GRAVITY -    980,085.6   (mgal)                       NAVD 88
 JV1089
 JV1089  VERT ORDER      -  * POSTED, SEE BELOW
 JV1089
 JV1089.The horizontal coordinates were scaled from a map and have
 JV1089.an estimated accuracy of +/- 6 seconds.
 JV1089
 JV1089.The orthometric height was determined by differential leveling
 JV1089.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV1089
 JV1089.* This is a POSTED BENCH MARK height.
 JV1089
 JV1089.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1089.GEOID18 height accuracy estimate available here.
 JV1089
 JV1089.Click photographs - Photos may exist for this station.
 JV1089
 JV1089.The dynamic height is computed by dividing the NAVD 88
 JV1089.geopotential number by the normal gravity value computed on the
 JV1089.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1089.degrees latitude (g = 980.6199 gals.).
 JV1089
 JV1089.The modeled gravity was interpolated from observed gravity values.
 JV1089
 JV1089;                    North         East    Units  Estimated Accuracy
 JV1089;SPC MD       -   167,870.      403,670.      MT  (+/- 180 meters Scaled)
 JV1089
 JV1089_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ309384(NAD 83)
 JV1089
 JV1089                          SUPERSEDED SURVEY CONTROL
 JV1089
 JV1089  NGVD 29 (11/26/84)  159.498  (m)          523.29   (f) ADJUSTED    2 0
 JV1089
 JV1089.Superseded values are not recommended for survey control.
 JV1089
 JV1089.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1089.See file dsdata.pdf to determine how the superseded data were derived.
 JV1089
 JV1089_MARKER: DD = SURVEY DISK
 JV1089_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1089_STAMPING: 1847
 JV1089_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1089
 JV1089  HISTORY     - Date     Condition        Report By
 JV1089  HISTORY     - UNK      MONUMENTED       WSSC
 JV1089  HISTORY     - 1942     GOOD             CGS
 JV1089  HISTORY     - 1965     MARK NOT FOUND   CGS
 JV1089
 JV1089                          STATION DESCRIPTION
 JV1089
 JV1089'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1089'AT HIGHLAND.
 JV1089'AT HIGHLAND, HOWARD COUNTY, ON THE HIGHLAND-DAYTON ROAD, AT THE
 JV1089'INTERSECTION OF THE ASHTON-CLARKSVILLE ROAD, 100 FEET WEST OF
 JV1089'THE ASHTON-CLARKSVILLE ROAD, 55.3 FEET SOUTH OF THE DAYTON ROAD,
 JV1089'AT THE GENERAL STORE, 3.6 FEET NORTHWEST OF THE NORTHWEST CORNER,
 JV1089'AND 54 FEET EAST OF A 24-INCH MAPLE TREE.  A WASHINGTON SUBURBAN
 JV1089'SANITARY DISTRICT STANDARD DISK, STAMPED 1847 AND SET IN THE
 JV1089'TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1089
 JV1089                          STATION RECOVERY (1965)
 JV1089
 JV1089'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 JV1089'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1090 ***********************************************************************
 JV1090  DESIGNATION -  1847 A
 JV1090  PID         -  JV1090
 JV1090  STATE/COUNTY-  MD/HOWARD
 JV1090  COUNTRY     -  US
 JV1090  USGS QUAD   -  CLARKSVILLE (2016)
 JV1090
 JV1090                         *CURRENT SURVEY CONTROL
 JV1090  ______________________________________________________________________
 JV1090* NAD 83(1986) POSITION- 39 11 07.     (N) 076 58 04.     (W)   SCALED
 JV1090* NAVD 88 ORTHO HEIGHT -   164.160 (meters)      538.58  (feet) POSTED
 JV1090  ______________________________________________________________________
 JV1090  GEOID HEIGHT    -        -31.984 (meters)                     GEOID18
 JV1090  DYNAMIC HEIGHT  -        164.07  (meters)      538.3   (feet) COMP
 JV1090  MODELED GRAVITY -    980,088.5   (mgal)                       NAVD 88
 JV1090
 JV1090  VERT ORDER      -  * POSTED, SEE BELOW
 JV1090
 JV1090.The horizontal coordinates were scaled from a map and have
 JV1090.an estimated accuracy of +/- 6 seconds.
 JV1090
 JV1090.The orthometric height was determined by differential leveling
 JV1090.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV1090
 JV1090.* This is a POSTED BENCH MARK height.
 JV1090
 JV1090.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1090.GEOID18 height accuracy estimate available here.
 JV1090
 JV1090.Click photographs - Photos may exist for this station.
 JV1090
 JV1090.The dynamic height is computed by dividing the NAVD 88
 JV1090.geopotential number by the normal gravity value computed on the
 JV1090.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1090.degrees latitude (g = 980.6199 gals.).
 JV1090
 JV1090.The modeled gravity was interpolated from observed gravity values.
 JV1090
 JV1090;                    North         East    Units  Estimated Accuracy
 JV1090;SPC MD       -   168,580.      402,780.      MT  (+/- 180 meters Scaled)
 JV1090
 JV1090_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ300391(NAD 83)
 JV1090
 JV1090                          SUPERSEDED SURVEY CONTROL
 JV1090
 JV1090  NGVD 29 (11/26/84)  164.378  (m)          539.30   (f) ADJUSTED    2 0
 JV1090
 JV1090.Superseded values are not recommended for survey control.
 JV1090
 JV1090.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1090.See file dsdata.pdf to determine how the superseded data were derived.
 JV1090
 JV1090_MARKER: Z = SEE DESCRIPTION
 JV1090_SETTING: 33 = WOODEN OBJECT (DRIVEN IN A PILE, POLE, TREE OR STUMP)
 JV1090_SP_SET: TREE
 JV1090_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1090
 JV1090  HISTORY     - Date     Condition        Report By
 JV1090  HISTORY     - UNK      MONUMENTED       WSSC
 JV1090  HISTORY     - 1939     GOOD             WSSC
 JV1090
 JV1090                          STATION DESCRIPTION
 JV1090
 JV1090'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1090'0.8 MI NW FROM HIGHLAND.
 JV1090'ABOUT 0.8 MILE NORTHWEST ALONG THE HIGHLAND-DAYTON ROAD FROM THE
 JV1090'INTERSECTION OF THE ASHTON-CLARKSVILLE ROAD AT HIGHLAND, HOWARD
 JV1090'COUNTY, IN A FIELD NORTHEAST OF THE ROAD, NEAR POWER-TRANSMISSION
 JV1090'LINE POLE 133761, AT A 15-INCH WALNUT TREE, AND IN THE NORTHEAST
 JV1090'ROOT.  A WASHINGTON SUBURBAN SANITARY DISTRICT COPPER LAG SCREW
 JV1090'AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1349 ***********************************************************************
 HV1349  DESIGNATION -  1848 WSSC
 HV1349  PID         -  HV1349
 HV1349  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1349  COUNTRY     -  US
 HV1349  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1349
 HV1349                         *CURRENT SURVEY CONTROL
 HV1349  ______________________________________________________________________
 HV1349* NAD 83(1986) POSITION- 38 55 58.     (N) 076 56 17.     (W)   SCALED
 HV1349* NAVD 88 ORTHO HEIGHT -     4.82  (+/-2cm)       15.8   (feet) VERTCON3
 HV1349  ______________________________________________________________________
 HV1349  GEOID HEIGHT    -        -32.201 (meters)                     GEOID18
 HV1349  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1349
 HV1349.The horizontal coordinates were scaled from a map and have
 HV1349.an estimated accuracy of +/- 6 seconds.
 HV1349
 HV1349.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1349.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1349
 HV1349.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1349.GEOID18 height accuracy estimate available here.
 HV1349
 HV1349.The vertical order pertains to the NGVD 29 superseded value.
 HV1349
 HV1349.Click photographs - Photos may exist for this station.
 HV1349
 HV1349;                    North         East    Units  Estimated Accuracy
 HV1349;SPC MD       -   140,550.      405,370.      MT  (+/- 180 meters Scaled)
 HV1349
 HV1349_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ320111(NAD 83)
 HV1349
 HV1349                          SUPERSEDED SURVEY CONTROL
 HV1349
 HV1349  NGVD 29 (11/26/84)    5.050  (m)           16.57   (f) ADJUSTED    2 0
 HV1349
 HV1349.Superseded values are not recommended for survey control.
 HV1349
 HV1349.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1349.See file dsdata.pdf to determine how the superseded data were derived.
 HV1349
 HV1349_MARKER: DD = SURVEY DISK
 HV1349_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1349_SP_SET: PLATFORM
 HV1349_STAMPING: 1848
 HV1349_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1349
 HV1349  HISTORY     - Date     Condition        Report By
 HV1349  HISTORY     - UNK      MONUMENTED       WSSC
 HV1349  HISTORY     - 1944     GOOD             WSSC
 HV1349
 HV1349                          STATION DESCRIPTION
 HV1349
 HV1349'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1349'0.5 MI S FROM BLADENSBURG.
 HV1349'AT THE BLADENSBURG SEWAGE DISPOSAL PLANT, 20 FEET SOUTH OF THE
 HV1349'PLANT OFFICE, AND IN THE SOUTHEAST CORNER OF THE EFFLUENT GATE
 HV1349'PLATFORM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1280 ***********************************************************************
 HV1280  DESIGNATION -  1849 WSSC
 HV1280  PID         -  HV1280
 HV1280  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1280  COUNTRY     -  US
 HV1280  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1280
 HV1280                         *CURRENT SURVEY CONTROL
 HV1280  ______________________________________________________________________
 HV1280* NAD 83(1986) POSITION- 38 59 54.     (N) 076 55 02.     (W)   SCALED
 HV1280* NAVD 88 ORTHO HEIGHT -    18.513 (meters)       60.74  (feet) ADJUSTED
 HV1280  ______________________________________________________________________
 HV1280  GEOID HEIGHT    -        -32.166 (meters)                     GEOID18
 HV1280  DYNAMIC HEIGHT  -         18.503 (meters)       60.71  (feet) COMP
 HV1280  MODELED GRAVITY -    980,104.3   (mgal)                       NAVD 88
 HV1280
 HV1280  VERT ORDER      -  FIRST     CLASS I
 HV1280
 HV1280.The horizontal coordinates were scaled from a map and have
 HV1280.an estimated accuracy of +/- 6 seconds.
 HV1280
 HV1280.The orthometric height was determined by differential leveling and
 HV1280.adjusted by the NATIONAL GEODETIC SURVEY
 HV1280.in June 1991.
 HV1280
 HV1280.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1280.GEOID18 height accuracy estimate available here.
 HV1280
 HV1280.Click photographs - Photos may exist for this station.
 HV1280
 HV1280.The dynamic height is computed by dividing the NAVD 88
 HV1280.geopotential number by the normal gravity value computed on the
 HV1280.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1280.degrees latitude (g = 980.6199 gals.).
 HV1280
 HV1280.The modeled gravity was interpolated from observed gravity values.
 HV1280
 HV1280;                    North         East    Units  Estimated Accuracy
 HV1280;SPC MD       -   147,820.      407,170.      MT  (+/- 180 meters Scaled)
 HV1280
 HV1280_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ339183(NAD 83)
 HV1280
 HV1280                          SUPERSEDED SURVEY CONTROL
 HV1280
 HV1280  NGVD 29 (11/26/84)   18.740  (m)           61.48   (f) ADJUSTED    1 1
 HV1280
 HV1280.Superseded values are not recommended for survey control.
 HV1280
 HV1280.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1280.See file dsdata.pdf to determine how the superseded data were derived.
 HV1280
 HV1280_MARKER: DD = SURVEY DISK
 HV1280_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1280_SP_SET: CULVERT
 HV1280_STAMPING: 1849
 HV1280_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1280
 HV1280  HISTORY     - Date     Condition        Report By
 HV1280  HISTORY     - UNK      MONUMENTED       WSSC
 HV1280  HISTORY     - 1971     GOOD             NGS
 HV1280
 HV1280                          STATION DESCRIPTION
 HV1280
 HV1280'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1280'AT COLLEGE PARK.
 HV1280'AT COLLEGE PARK, ABOUT 1.15 MILE SOUTHWEST ALONG U.S. HIGHWAY 1
 HV1280'FROM THE INTERSTATE HIGHWAY 495 (CAPITOL BELTWAY) INTERCHANGE,
 HV1280'THENCE 0.8 MILE EAST ALONG GREENBELT ROAD, SET IN THE WEST END
 HV1280'OF THE NORTH CONCRETE HEADWALL OF A CONCRETE CULVERT UNDER THE
 HV1280'ROAD, 2.0 FEET EAST OF THE WEST END OF THE HEADWALL, 78 FEET
 HV1280'NORTH OF THE CENTER LINE OF GREENBELT ROAD, 200 FEET SOUTH OF THE
 HV1280'CENTER LINE OF OLD BRANCHVILLE ROAD, AND ABOUT 12 FEET BELOW THE
 HV1280'LEVEL OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1317 ***********************************************************************
 HV1317  DESIGNATION -  1851 WSSC
 HV1317  PID         -  HV1317
 HV1317  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1317  COUNTRY     -  US
 HV1317  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1317
 HV1317                         *CURRENT SURVEY CONTROL
 HV1317  ______________________________________________________________________
 HV1317* NAD 83(1986) POSITION- 38 53 05.     (N) 076 54 54.     (W)   SCALED
 HV1317* NAVD 88 ORTHO HEIGHT -    33.08  (+/-2cm)      108.5   (feet) VERTCON3
 HV1317  ______________________________________________________________________
 HV1317  GEOID HEIGHT    -        -32.327 (meters)                     GEOID18
 HV1317  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1317
 HV1317.The horizontal coordinates were scaled from a map and have
 HV1317.an estimated accuracy of +/- 6 seconds.
 HV1317
 HV1317.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1317.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1317
 HV1317.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1317.GEOID18 height accuracy estimate available here.
 HV1317
 HV1317.The vertical order pertains to the NGVD 29 superseded value.
 HV1317
 HV1317.Click photographs - Photos may exist for this station.
 HV1317
 HV1317;                    North         East    Units  Estimated Accuracy
 HV1317;SPC MD       -   135,210.      407,380.      MT  (+/- 180 meters Scaled)
 HV1317
 HV1317_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ339057(NAD 83)
 HV1317
 HV1317                          SUPERSEDED SURVEY CONTROL
 HV1317
 HV1317  NGVD 29 (11/26/84)   33.316  (m)          109.30   (f) ADJUSTED    2 0
 HV1317
 HV1317.Superseded values are not recommended for survey control.
 HV1317
 HV1317.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1317.See file dsdata.pdf to determine how the superseded data were derived.
 HV1317
 HV1317_MARKER: DD = SURVEY DISK
 HV1317_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1317_SP_SET: BRIDGE ABUTMENT
 HV1317_STAMPING: 1851
 HV1317_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1317
 HV1317  HISTORY     - Date     Condition        Report By
 HV1317  HISTORY     - 1944     MONUMENTED       WSSC
 HV1317
 HV1317                          STATION DESCRIPTION
 HV1317
 HV1317'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1317'AT CAPTIOL HEIGHTS.  ON CENTRAL AVENUE, ABOUT 200 FT (61.0 M) EAST OF
 HV1317'CRYSTAL SPRING AVENUE, EAST OF THE STEMBLER AND FORD LUMBER CO.
 HV1317'PROPERTY, WEST OF A POST OFFICE AT A BRIDGE ON CENTRAL AVENUE AND IN
 HV1317'THE SOUTHEAST ANGLE OF THE SOUTH ABUTMENT.
 HV1317'
 HV1317'NOTE-CRYSTAL SPRING AVENUE IS ALSO 57TH AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2665 ***********************************************************************
 JV2665  DESIGNATION -  1856 WSSC
 JV2665  PID         -  JV2665
 JV2665  STATE/COUNTY-  MD/MONTGOMERY
 JV2665  COUNTRY     -  US
 JV2665  USGS QUAD   -  SANDY SPRING (2016)
 JV2665
 JV2665                         *CURRENT SURVEY CONTROL
 JV2665  ______________________________________________________________________
 JV2665* NAD 83(1986) POSITION- 39 09 58.     (N) 077 05 06.     (W)   SCALED
 JV2665* NAVD 88 ORTHO HEIGHT -   151.35  (+/-2cm)      496.6   (feet) VERTCON3
 JV2665  ______________________________________________________________________
 JV2665  GEOID HEIGHT    -        -31.794 (meters)                     GEOID18
 JV2665  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2665
 JV2665.The horizontal coordinates were scaled from a map and have
 JV2665.an estimated accuracy of +/- 6 seconds.
 JV2665
 JV2665.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2665.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2665
 JV2665.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2665.GEOID18 height accuracy estimate available here.
 JV2665
 JV2665.The vertical order pertains to the NGVD 29 superseded value.
 JV2665
 JV2665.Click photographs - Photos may exist for this station.
 JV2665
 JV2665;                    North         East    Units  Estimated Accuracy
 JV2665;SPC MD       -   166,450.      392,650.      MT  (+/- 180 meters Scaled)
 JV2665
 JV2665_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ198372(NAD 83)
 JV2665
 JV2665                          SUPERSEDED SURVEY CONTROL
 JV2665
 JV2665  NGVD 29 (11/26/84)  151.553  (m)          497.22   (f) ADJUSTED    2 0
 JV2665
 JV2665.Superseded values are not recommended for survey control.
 JV2665
 JV2665.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2665.See file dsdata.pdf to determine how the superseded data were derived.
 JV2665
 JV2665_MARKER: DD = SURVEY DISK
 JV2665_SETTING: 0 = UNSPECIFIED SETTING
 JV2665_SP_SET: IRON PIPE
 JV2665_STAMPING: 1856
 JV2665_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2665
 JV2665  HISTORY     - Date     Condition        Report By
 JV2665  HISTORY     - UNK      MONUMENTED       WSSC
 JV2665  HISTORY     - 1944     GOOD             WSSC
 JV2665
 JV2665                          STATION DESCRIPTION
 JV2665
 JV2665'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2665'1.3 MI NW FROM OLNEY.
 JV2665'ON STATE HIGHWAY 108, IN THE NORTHWEST CORNER OF A ROAD
 JV2665'INTERSECTION, 27.3 FEET NORTHEAST OF THE CENTERLINE OF THE
 JV2665'HIGHWAY, 18.6 FEET NORTHWEST OF THE GRAVEL ROAD AND 3.6 FEET
 JV2665'SOUTH OF A FENCE CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1072 ***********************************************************************
 JV1072  DESIGNATION -  1857
 JV1072  PID         -  JV1072
 JV1072  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1072  COUNTRY     -  US
 JV1072  USGS QUAD   -  LAUREL (2016)
 JV1072
 JV1072                         *CURRENT SURVEY CONTROL
 JV1072  ______________________________________________________________________
 JV1072* NAD 83(1986) POSITION- 39 06 23.     (N) 076 51 18.     (W)   SCALED
 JV1072* NAVD 88 ORTHO HEIGHT -    58.93  (+/-2cm)      193.3   (feet) VERTCON3
 JV1072  ______________________________________________________________________
 JV1072  GEOID HEIGHT    -        -32.231 (meters)                     GEOID18
 JV1072  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1072
 JV1072.The horizontal coordinates were scaled from a map and have
 JV1072.an estimated accuracy of +/- 6 seconds.
 JV1072
 JV1072.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1072.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1072
 JV1072.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1072.GEOID18 height accuracy estimate available here.
 JV1072
 JV1072.The vertical order pertains to the NGVD 29 superseded value.
 JV1072
 JV1072.Click photographs - Photos may exist for this station.
 JV1072
 JV1072;                    North         East    Units  Estimated Accuracy
 JV1072;SPC MD       -   159,830.      412,540.      MT  (+/- 180 meters Scaled)
 JV1072
 JV1072_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ396302(NAD 83)
 JV1072
 JV1072                          SUPERSEDED SURVEY CONTROL
 JV1072
 JV1072  NGVD 29 (11/26/84)   59.158  (m)          194.09   (f) ADJUSTED    2 0
 JV1072
 JV1072.Superseded values are not recommended for survey control.
 JV1072
 JV1072.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1072.See file dsdata.pdf to determine how the superseded data were derived.
 JV1072
 JV1072_STAMPING: 1857
 JV1072
 JV1072  HISTORY     - Date     Condition        Report By
 JV1072  HISTORY     - UNK      MONUMENTED       WSSC
 JV1072  HISTORY     - 1939     GOOD             WSSC
 JV1072  HISTORY     - 20200803 MARK NOT FOUND   PROFLN
 JV1072
 JV1072                          STATION DESCRIPTION
 JV1072
 JV1072'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1072'AT LAUREL.
 JV1072'AT LAUREL, PRINCE GEORGES COUNTY, ON MONTGOMERY AVENUE, AT THE
 JV1072'INTERSECTION OF SEVENTH STREET, 76 FEET WEST OF SEVENTH STREET,
 JV1072'46.7 FEET NORTH OF MONTGOMERY AVENUE, AT THE HIGH SCHOOL, IN THE
 JV1072'SOUTHEAST PORTION OF THE GROUNDS, 24 FEET WEST OF THE SOUTHEAST
 JV1072'DRIVE, 50.3 FEET WEST OF A 12-INCH MAPLE TREE, 30.9 FEET NORTHEAST
 JV1072'OF A 14-INCH SPRUCE TREE, AND 17.8 FEET NORTH OF ANOTHER 12-INCH
 JV1072'MAPLE TREE.  A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD
 JV1072'DISK, STAMPED 1857 AND SET IN THE TOP OF A CONCRETE-FILLED IRON
 JV1072'PIPE.
 JV1072
 JV1072                          STATION RECOVERY (2020)
 JV1072
 JV1072'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV1072'BELIEVED PAVED OVER IN THE PARKING LOT OF THE OLD HIGH SCHOOL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1094 ***********************************************************************
 JV1094  DESIGNATION -  1858 A WSSC
 JV1094  PID         -  JV1094
 JV1094  STATE/COUNTY-  MD/HOWARD
 JV1094  COUNTRY     -  US
 JV1094  USGS QUAD   -  CLARKSVILLE (2016)
 JV1094
 JV1094                         *CURRENT SURVEY CONTROL
 JV1094  ______________________________________________________________________
 JV1094* NAD 83(1986) POSITION- 39 12 17.     (N) 076 58 54.     (W)   SCALED
 JV1094* NAVD 88 ORTHO HEIGHT -   129.18  (+/-2cm)      423.8   (feet) VERTCON3
 JV1094  ______________________________________________________________________
 JV1094  GEOID HEIGHT    -        -31.953 (meters)                     GEOID18
 JV1094  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1094
 JV1094.The horizontal coordinates were scaled from a map and have
 JV1094.an estimated accuracy of +/- 6 seconds.
 JV1094
 JV1094.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1094.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1094
 JV1094.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1094.GEOID18 height accuracy estimate available here.
 JV1094
 JV1094.The vertical order pertains to the NGVD 29 superseded value.
 JV1094
 JV1094.Click photographs - Photos may exist for this station.
 JV1094
 JV1094;                    North         East    Units  Estimated Accuracy
 JV1094;SPC MD       -   170,730.      401,580.      MT  (+/- 180 meters Scaled)
 JV1094
 JV1094_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ288413(NAD 83)
 JV1094
 JV1094                          SUPERSEDED SURVEY CONTROL
 JV1094
 JV1094  NGVD 29 (11/26/84)  129.399  (m)          424.54   (f) ADJUSTED    2 0
 JV1094
 JV1094.Superseded values are not recommended for survey control.
 JV1094
 JV1094.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1094.See file dsdata.pdf to determine how the superseded data were derived.
 JV1094
 JV1094_MARKER: Q = CHISELED SQUARE
 JV1094_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1094_SP_SET: CULVERT
 JV1094_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1094
 JV1094  HISTORY     - Date     Condition        Report By
 JV1094  HISTORY     - UNK      MONUMENTED       WSSC
 JV1094  HISTORY     - 1939     GOOD             WSSC
 JV1094
 JV1094                          STATION DESCRIPTION
 JV1094
 JV1094'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1094'2.4 MI NW FROM HIGHLAND.
 JV1094'ABOUT 2.35 MILES NORTHWEST ALONG THE HIGHLAND-DAYTON ROAD FROM
 JV1094'THE INTERSECTION OF THE ASHTON-CLARKSVILLE ROAD AT HIGHLAND,
 JV1094'HOWARD COUNTY, AT THE JUNCTION OF THE GREEN BRIDGE ROAD, AT A
 JV1094'CONCRETE CULVERT UNDER THE MAIN ROAD, AND ON THE TOP OF THE
 JV1094'NORTHEAST HEAD WALL.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1095 ***********************************************************************
 JV1095  DESIGNATION -  1858 B WSSC
 JV1095  PID         -  JV1095
 JV1095  STATE/COUNTY-  MD/HOWARD
 JV1095  COUNTRY     -  US
 JV1095  USGS QUAD   -  CLARKSVILLE (2016)
 JV1095
 JV1095                         *CURRENT SURVEY CONTROL
 JV1095  ______________________________________________________________________
 JV1095* NAD 83(1986) POSITION- 39 12 37.     (N) 076 58 44.     (W)   SCALED
 JV1095* NAVD 88 ORTHO HEIGHT -   157.64  (+/-2cm)      517.2   (feet) VERTCON3
 JV1095  ______________________________________________________________________
 JV1095  GEOID HEIGHT    -        -31.955 (meters)                     GEOID18
 JV1095  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1095
 JV1095.The horizontal coordinates were scaled from a map and have
 JV1095.an estimated accuracy of +/- 6 seconds.
 JV1095
 JV1095.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1095.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1095
 JV1095.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1095.GEOID18 height accuracy estimate available here.
 JV1095
 JV1095.The vertical order pertains to the NGVD 29 superseded value.
 JV1095
 JV1095.Click photographs - Photos may exist for this station.
 JV1095
 JV1095;                    North         East    Units  Estimated Accuracy
 JV1095;SPC MD       -   171,350.      401,820.      MT  (+/- 180 meters Scaled)
 JV1095
 JV1095_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ291419(NAD 83)
 JV1095
 JV1095                          SUPERSEDED SURVEY CONTROL
 JV1095
 JV1095  NGVD 29 (11/26/84)  157.856  (m)          517.90   (f) ADJUSTED    2 0
 JV1095
 JV1095.Superseded values are not recommended for survey control.
 JV1095
 JV1095.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1095.See file dsdata.pdf to determine how the superseded data were derived.
 JV1095
 JV1095_MARKER: Z = SEE DESCRIPTION
 JV1095_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1095_SP_SET: TREE
 JV1095_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1095
 JV1095  HISTORY     - Date     Condition        Report By
 JV1095  HISTORY     - UNK      MONUMENTED       WSSC
 JV1095  HISTORY     - 1939     GOOD             WSSC
 JV1095
 JV1095                          STATION DESCRIPTION
 JV1095
 JV1095'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1095'2.6 MI NW FROM HIGHLAND.
 JV1095'ABOUT 2.65 MILES NORTHWEST ALONG THE HIGHLAND-DAYTON ROAD FROM
 JV1095'THE INTERSECTION OF THE ASHTON-CLARKSVILLE ROAD AT HIGHLAND,
 JV1095'HOWARD COUNTY, ABOUT 0.3 MILE NORTHWEST OF THE JUNCTION OF THE
 JV1095'GREEN BRIDGE ROAD, AT AN 8-INCH HICKORY TREE EAST OF THE ROAD,
 JV1095'AND IN THE SOUTH SIDE OF THE TREE.  A WASHINGTON SUBURBAN
 JV1095'SANITARY DISTRICT COPPER LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1093 ***********************************************************************
 JV1093  DESIGNATION -  1858 WSSC
 JV1093  PID         -  JV1093
 JV1093  STATE/COUNTY-  MD/HOWARD
 JV1093  COUNTRY     -  US
 JV1093  USGS QUAD   -  CLARKSVILLE (2016)
 JV1093
 JV1093                         *CURRENT SURVEY CONTROL
 JV1093  ______________________________________________________________________
 JV1093* NAD 83(1986) POSITION- 39 12 07.     (N) 076 58 53.     (W)   SCALED
 JV1093* NAVD 88 ORTHO HEIGHT -   150.33  (+/-2cm)      493.2   (feet) VERTCON3
 JV1093  ______________________________________________________________________
 JV1093  GEOID HEIGHT    -        -31.955 (meters)                     GEOID18
 JV1093  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1093
 JV1093.The horizontal coordinates were scaled from a map and have
 JV1093.an estimated accuracy of +/- 6 seconds.
 JV1093
 JV1093.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1093.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1093
 JV1093.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1093.GEOID18 height accuracy estimate available here.
 JV1093
 JV1093.The vertical order pertains to the NGVD 29 superseded value.
 JV1093
 JV1093.Click photographs - Photos may exist for this station.
 JV1093
 JV1093;                    North         East    Units  Estimated Accuracy
 JV1093;SPC MD       -   170,430.      401,610.      MT  (+/- 180 meters Scaled)
 JV1093
 JV1093_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ289410(NAD 83)
 JV1093
 JV1093                          SUPERSEDED SURVEY CONTROL
 JV1093
 JV1093  NGVD 29 (11/26/84)  150.546  (m)          493.92   (f) ADJUSTED    2 0
 JV1093
 JV1093.Superseded values are not recommended for survey control.
 JV1093
 JV1093.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1093.See file dsdata.pdf to determine how the superseded data were derived.
 JV1093
 JV1093_MARKER: DD = SURVEY DISK
 JV1093_SP_SET: IRON PIPE
 JV1093_STAMPING: 1858
 JV1093_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1093
 JV1093  HISTORY     - Date     Condition        Report By
 JV1093  HISTORY     - UNK      MONUMENTED       WSSC
 JV1093  HISTORY     - 1939     GOOD             WSSC
 JV1093  HISTORY     - 20210619 MARK NOT FOUND   PROFLN
 JV1093
 JV1093                          STATION DESCRIPTION
 JV1093
 JV1093'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1093'2.2 MI NW FROM HIGHLAND.
 JV1093'ABOUT 2.15 MILES NORTHWEST ALONG THE HIGHLAND-DAYTON ROAD FROM
 JV1093'THE INTERSECTION OF THE ASHTON-CLARKSVILLE ROAD AT HIGHLAND,
 JV1093'HOWARD COUNTY, ABOUT 0.15 MILE NORTHWEST OF NICHOLS CORNER, ON
 JV1093'CAMP MONTROSE PROPERTY, NORTHEAST OF THE ROAD, 14.2 FEET SOUTH
 JV1093'OF AN 18-INCH GUM TREE, AND 9.9 FEET NORTHEAST OF A 25-INCH
 JV1093'CHERRY TREE.  A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD
 JV1093'DISK, STAMPED 1858 AND SET IN THE TOP OF A CONCRETE-FILLED IRON
 JV1093'PIPE.
 JV1093
 JV1093                          STATION RECOVERY (2021)
 JV1093
 JV1093'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV1093'THERE ARE NO TREES LEFT FROM 1939 TO MEASURE FROM TODAY, NO INDICATION
 JV1093'OF CAMP MONTROSE PROPERTY.  NEITHER THE NATIONAL GEODETIC SURVEY
 JV1093'DESCRIPTION NOR THE WSSC BENCH MARK RECORD (SKETCH) LISTS OR SHOWS A
 JV1093'DISTANCE FROM HIGHLAND ROAD.  IT IS ESSENTIALLY IMPOSSIBLE TO LOCATE
 JV1093'THE MARK TODAY FROM THE AVAILABLE INFORMATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1098 ***********************************************************************
 JV1098  DESIGNATION -  1863 WSSC
 JV1098  PID         -  JV1098
 JV1098  STATE/COUNTY-  MD/HOWARD
 JV1098  COUNTRY     -  US
 JV1098  USGS QUAD   -  CLARKSVILLE (2016)
 JV1098
 JV1098                         *CURRENT SURVEY CONTROL
 JV1098  ______________________________________________________________________
 JV1098* NAD 83(1986) POSITION- 39 14 24.     (N) 076 59 15.     (W)   SCALED
 JV1098* NAVD 88 ORTHO HEIGHT -   176.93  (+/-2cm)      580.5   (feet) VERTCON3
 JV1098  ______________________________________________________________________
 JV1098  GEOID HEIGHT    -        -31.928 (meters)                     GEOID18
 JV1098  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1098
 JV1098.The horizontal coordinates were scaled from a map and have
 JV1098.an estimated accuracy of +/- 6 seconds.
 JV1098
 JV1098.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1098.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1098
 JV1098.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1098.GEOID18 height accuracy estimate available here.
 JV1098
 JV1098.The vertical order pertains to the NGVD 29 superseded value.
 JV1098
 JV1098.Click photographs - Photos may exist for this station.
 JV1098
 JV1098;                    North         East    Units  Estimated Accuracy
 JV1098;SPC MD       -   174,650.      401,080.      MT  (+/- 180 meters Scaled)
 JV1098
 JV1098_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ284452(NAD 83)
 JV1098
 JV1098                          SUPERSEDED SURVEY CONTROL
 JV1098
 JV1098  NGVD 29 (11/26/84)  177.145  (m)          581.18   (f) ADJUSTED    2 0
 JV1098
 JV1098.Superseded values are not recommended for survey control.
 JV1098
 JV1098.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1098.See file dsdata.pdf to determine how the superseded data were derived.
 JV1098
 JV1098_MARKER: DD = SURVEY DISK
 JV1098_SP_SET: IRON PIPE
 JV1098_STAMPING: 1863
 JV1098_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1098
 JV1098  HISTORY     - Date     Condition        Report By
 JV1098  HISTORY     - UNK      MONUMENTED       WSSC
 JV1098  HISTORY     - 1939     GOOD             WSSC
 JV1098  HISTORY     - 20210619 MARK NOT FOUND   PROFLN
 JV1098
 JV1098                          STATION DESCRIPTION
 JV1098
 JV1098'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1098'AT DAYTON.
 JV1098'AT DAYTON, HOWARD COUNTY, ON THE DAYTON-TRIADELPHIA ROAD, IN THE
 JV1098'LAWN AT THE REAR OF THE PUBLIC SCHOOL, 58.2 FEET SOUTHWEST OF THE
 JV1098'NORTHWEST CORNER OF THE BUILDING, 56.8 FEET NORTHWEST OF THE
 JV1098'SOUTHWEST CORNER, 29.0 FEET NORTH OF THE NORTHWEST CORNER OF THE
 JV1098'NORTH ONE OF TWO OUTDOOR TOILETS, AND 5 FEET EAST OF THE FENCE.
 JV1098'A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED
 JV1098'1863 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1098
 JV1098                          STATION RECOVERY (2021)
 JV1098
 JV1098'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV1098'THE SCHOOL WHERE THE MARK WAS LOCATED WAS AT THE NORTHWEST QUADRANT OF
 JV1098'THE INTERSECTION OF LINTHICUM ROAD, TEN OAKS ROAD AND GREEN BRIDGE
 JV1098'ROAD.  IT HAS BEEN REMOVED AND PRESUMABLY THE MARK WITH IT.  A LARGE
 JV1098'METAL BUILDING COVERS THE AREA WHERE THE MARK WAS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2593 ***********************************************************************
 JV2593  DESIGNATION -  1867 WSSC
 JV2593  PID         -  JV2593
 JV2593  STATE/COUNTY-  MD/MONTGOMERY
 JV2593  COUNTRY     -  US
 JV2593  USGS QUAD   -  DAMASCUS (2016)
 JV2593
 JV2593                         *CURRENT SURVEY CONTROL
 JV2593  ______________________________________________________________________
 JV2593* NAD 83(1986) POSITION- 39 15 04.     (N) 077 08 36.     (W)   SCALED
 JV2593* NAVD 88 ORTHO HEIGHT -   199.031 (meters)      652.99  (feet) ADJUSTED
 JV2593  ______________________________________________________________________
 JV2593  GEOID HEIGHT    -        -31.791 (meters)                     GEOID18
 JV2593  DYNAMIC HEIGHT  -        198.928 (meters)      652.65  (feet) COMP
 JV2593  MODELED GRAVITY -    980,103.6   (mgal)                       NAVD 88
 JV2593
 JV2593  VERT ORDER      -  SECOND    CLASS 0
 JV2593
 JV2593.The horizontal coordinates were scaled from a map and have
 JV2593.an estimated accuracy of +/- 6 seconds.
 JV2593
 JV2593.The orthometric height was determined by differential leveling and
 JV2593.adjusted by the NATIONAL GEODETIC SURVEY
 JV2593.in June 1991.
 JV2593
 JV2593.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2593.GEOID18 height accuracy estimate available here.
 JV2593
 JV2593.Click photographs - Photos may exist for this station.
 JV2593
 JV2593.The dynamic height is computed by dividing the NAVD 88
 JV2593.geopotential number by the normal gravity value computed on the
 JV2593.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2593.degrees latitude (g = 980.6199 gals.).
 JV2593
 JV2593.The modeled gravity was interpolated from observed gravity values.
 JV2593
 JV2593;                    North         East    Units  Estimated Accuracy
 JV2593;SPC MD       -   175,890.      387,630.      MT  (+/- 180 meters Scaled)
 JV2593
 JV2593_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ150468(NAD 83)
 JV2593
 JV2593                          SUPERSEDED SURVEY CONTROL
 JV2593
 JV2593  NGVD 29 (11/26/84)  199.242  (m)          653.68   (f) ADJUSTED    2 0
 JV2593
 JV2593.Superseded values are not recommended for survey control.
 JV2593
 JV2593.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2593.See file dsdata.pdf to determine how the superseded data were derived.
 JV2593
 JV2593_MARKER: DD = SURVEY DISK
 JV2593_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2593_SP_SET: FOUNDATION
 JV2593_STAMPING: 1867
 JV2593_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2593
 JV2593  HISTORY     - Date     Condition        Report By
 JV2593  HISTORY     - UNK      MONUMENTED       WSSC
 JV2593  HISTORY     - 1946     GOOD             WSSC
 JV2593
 JV2593                          STATION DESCRIPTION
 JV2593
 JV2593'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2593'0.3 MI S FROM ETCHISON.
 JV2593'ABOUT 0.3 MILE SOUTH ALONG THE ETCHISON-LAYTONSVILLE ROAD ( STATE
 JV2593'HIGHWAY 108) FROM THE GENERAL STORE AT ETCHISON, MONTGOMERY
 JV2593'COUNTY, AT THE MOUNT TABOR METHODIST CHURCH, 4 FEET WEST OF THE
 JV2593'SOUTHEAST CORNER OF THE BUILDING, IN THE SOUTH FACE OF THE
 JV2593'CONCRETE FOUNDATION, AND ABOUT 1-1/2 FEET ABOVE THE GROUND.  A
 JV2593'WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED 1867
 JV2593'AND SET VERTICALLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1100 ***********************************************************************
 JV1100  DESIGNATION -  1868 A WSSC
 JV1100  PID         -  JV1100
 JV1100  STATE/COUNTY-  MD/HOWARD
 JV1100  COUNTRY     -  US
 JV1100  USGS QUAD   -  SANDY SPRING (2016)
 JV1100
 JV1100                         *CURRENT SURVEY CONTROL
 JV1100  ______________________________________________________________________
 JV1100* NAD 83(1986) POSITION- 39 14 32.     (N) 077 00 10.     (W)   SCALED
 JV1100* NAVD 88 ORTHO HEIGHT -   144.39  (+/-2cm)      473.7   (feet) VERTCON3
 JV1100  ______________________________________________________________________
 JV1100  GEOID HEIGHT    -        -31.906 (meters)                     GEOID18
 JV1100  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1100
 JV1100.The horizontal coordinates were scaled from a map and have
 JV1100.an estimated accuracy of +/- 6 seconds.
 JV1100
 JV1100.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1100.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1100
 JV1100.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1100.GEOID18 height accuracy estimate available here.
 JV1100
 JV1100.The vertical order pertains to the NGVD 29 superseded value.
 JV1100
 JV1100.Click photographs - Photos may exist for this station.
 JV1100
 JV1100;                    North         East    Units  Estimated Accuracy
 JV1100;SPC MD       -   174,900.      399,760.      MT  (+/- 180 meters Scaled)
 JV1100
 JV1100_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ271455(NAD 83)
 JV1100
 JV1100                          SUPERSEDED SURVEY CONTROL
 JV1100
 JV1100  NGVD 29 (11/26/84)  144.599  (m)          474.41   (f) ADJUSTED    2 0
 JV1100
 JV1100.Superseded values are not recommended for survey control.
 JV1100
 JV1100.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1100.See file dsdata.pdf to determine how the superseded data were derived.
 JV1100
 JV1100_MARKER: Z = SEE DESCRIPTION
 JV1100_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1100_SP_SET: CULVERT
 JV1100_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1100
 JV1100  HISTORY     - Date     Condition        Report By
 JV1100  HISTORY     - 1934     MONUMENTED       WSSC
 JV1100
 JV1100                          STATION DESCRIPTION
 JV1100
 JV1100'DESCRIBED BY WASH SUBURB SAN COMM 1934
 JV1100'0.9 MI NW FROM DAYTON.
 JV1100'ABOUT 0.9 MILE NW ALONG THE DAYTON-GARY ROAD FROM THE MAIN ROAD
 JV1100'INTERSECTION AT DAYTON, HOWARD CO., AT THE CURVE IN THE ROAD
 JV1100'AT A CONCRETE CULVERT, IN THE TOP OF THE SOUTH HEAD WALL, AND AT
 JV1100'THE DATE "19-34".  THE HIGH POINT ON THE FIGURE 3.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1099 ***********************************************************************
 JV1099  DESIGNATION -  1868 WSSC
 JV1099  PID         -  JV1099
 JV1099  STATE/COUNTY-  MD/HOWARD
 JV1099  COUNTRY     -  US
 JV1099  USGS QUAD   -  CLARKSVILLE (2016)
 JV1099
 JV1099                         *CURRENT SURVEY CONTROL
 JV1099  ______________________________________________________________________
 JV1099* NAD 83(1986) POSITION- 39 14 27.     (N) 076 59 21.     (W)   SCALED
 JV1099* NAVD 88 ORTHO HEIGHT -   179.74  (+/-2cm)      589.7   (feet) VERTCON3
 JV1099  ______________________________________________________________________
 JV1099  GEOID HEIGHT    -        -31.925 (meters)                     GEOID18
 JV1099  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1099
 JV1099.The horizontal coordinates were scaled from a map and have
 JV1099.an estimated accuracy of +/- 6 seconds.
 JV1099
 JV1099.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1099.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1099
 JV1099.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1099.GEOID18 height accuracy estimate available here.
 JV1099
 JV1099.The vertical order pertains to the NGVD 29 superseded value.
 JV1099
 JV1099.Click photographs - Photos may exist for this station.
 JV1099
 JV1099;                    North         East    Units  Estimated Accuracy
 JV1099;SPC MD       -   174,740.      400,940.      MT  (+/- 180 meters Scaled)
 JV1099
 JV1099_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ283453(NAD 83)
 JV1099
 JV1099                          SUPERSEDED SURVEY CONTROL
 JV1099
 JV1099  NGVD 29 (11/26/84)  179.952  (m)          590.39   (f) ADJUSTED    2 0
 JV1099
 JV1099.Superseded values are not recommended for survey control.
 JV1099
 JV1099.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1099.See file dsdata.pdf to determine how the superseded data were derived.
 JV1099
 JV1099_MARKER: DD = SURVEY DISK
 JV1099_SP_SET: IRON PIPE
 JV1099_STAMPING: 1868
 JV1099_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1099
 JV1099  HISTORY     - Date     Condition        Report By
 JV1099  HISTORY     - UNK      MONUMENTED       WSSC
 JV1099  HISTORY     - 1939     GOOD             WSSC
 JV1099  HISTORY     - 20210619 MARK NOT FOUND   PROFLN
 JV1099
 JV1099                          STATION DESCRIPTION
 JV1099
 JV1099'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1099'AT DAYTON.
 JV1099'AT DAYTON, HOWARD COUNTY, ABOUT 0.2 MILE WEST ALONG THE
 JV1099'DAYTON-TRIADELPHIA ROAD FROM THE MAIN ROAD INTERSECTION, NEAR
 JV1099'THE JUNCTION OF A ROAD LEADING NORTH, NEAR A HOUSE SOUTH OF THE
 JV1099'ROAD, IN THE LAWN ON THE EAST SIDE OF THE PRIVATE DRIVE, 49.2
 JV1099'FEET NORTHEAST OF THE SOUTHEAST CORNER OF THE HOUSE, 33 FEET EAST
 JV1099'OF THE NORTHEAST CORNER, AND 41.6 FEET NORTH OF A TREE.  A
 JV1099'WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED
 JV1099'1868 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1099
 JV1099                          STATION RECOVERY (2021)
 JV1099
 JV1099'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV1099'THE HOUSE WHERE THE MARK WAS LOCATED IS STILL THERE, 4710 LINTHICUM
 JV1099'ROAD, AT THE V-JUNCTION WITH HOWARD ROAD AND THE TIES FROM THE HOUSE
 JV1099'CORNERS INTERSECT AT A DEFINITE SPOT, BUT PROBING AND SEARCHING WITH A
 JV1099'METAL DETECTOR DID NOT YIELD ANY SIGN OF THE MARK.  WSSC LISTED THIS
 JV1099'MARK AS DESTROYED IN 1972.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2769 ***********************************************************************
 JV2769  DESIGNATION -  1870 WSSC
 JV2769  PID         -  JV2769
 JV2769  STATE/COUNTY-  MD/MONTGOMERY
 JV2769  COUNTRY     -  US
 JV2769  USGS QUAD   -  SANDY SPRING (2016)
 JV2769
 JV2769                         *CURRENT SURVEY CONTROL
 JV2769  ______________________________________________________________________
 JV2769* NAD 83(1986) POSITION- 39 13 18.     (N) 077 05 08.     (W)   SCALED
 JV2769* NAVD 88 ORTHO HEIGHT -   152.15  (+/-2cm)      499.2   (feet) VERTCON3
 JV2769  ______________________________________________________________________
 JV2769  GEOID HEIGHT    -        -31.803 (meters)                     GEOID18
 JV2769  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2769
 JV2769.The horizontal coordinates were scaled from a map and have
 JV2769.an estimated accuracy of +/- 6 seconds.
 JV2769
 JV2769.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2769.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2769
 JV2769.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2769.GEOID18 height accuracy estimate available here.
 JV2769
 JV2769.The vertical order pertains to the NGVD 29 superseded value.
 JV2769
 JV2769.Click photographs - Photos may exist for this station.
 JV2769
 JV2769;                    North         East    Units  Estimated Accuracy
 JV2769;SPC MD       -   172,620.      392,610.      MT  (+/- 180 meters Scaled)
 JV2769
 JV2769_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ199434(NAD 83)
 JV2769
 JV2769                          SUPERSEDED SURVEY CONTROL
 JV2769
 JV2769  NGVD 29 (11/26/84)  152.347  (m)          499.83   (f) ADJUSTED    2 0
 JV2769
 JV2769.Superseded values are not recommended for survey control.
 JV2769
 JV2769.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2769.See file dsdata.pdf to determine how the superseded data were derived.
 JV2769
 JV2769_MARKER: DD = SURVEY DISK
 JV2769_SETTING: 0 = UNSPECIFIED SETTING
 JV2769_SP_SET: IRON PIPE
 JV2769_STAMPING: 1870
 JV2769_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2769
 JV2769  HISTORY     - Date     Condition        Report By
 JV2769  HISTORY     - UNK      MONUMENTED       WSSC
 JV2769  HISTORY     - 1939     GOOD             WSSC
 JV2769
 JV2769                          STATION DESCRIPTION
 JV2769
 JV2769'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2769'1 MI W FROM UNITY.
 JV2769'ON THE LAYTONSVILLE ROAD (STATE HIGHWAY 701), IN THE SOUTHEAST
 JV2769'CORNER OF THE INTERSECTION OF A GRAVEL ROAD LEADING SOUTH TO
 JV2769'MT. ZION, 40 FEET SOUTH OF THE LAYTONSVILLE ROAD, AND 20 FEET
 JV2769'EAST OF THE CENTERLINE OF THE GRAVEL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2766 ***********************************************************************
 JV2766  DESIGNATION -  1871
 JV2766  PID         -  JV2766
 JV2766  STATE/COUNTY-  MD/MONTGOMERY
 JV2766  COUNTRY     -  US
 JV2766  USGS QUAD   -  SANDY SPRING (2016)
 JV2766
 JV2766                         *CURRENT SURVEY CONTROL
 JV2766  ______________________________________________________________________
 JV2766* NAD 83(1986) POSITION- 39 13 18.     (N) 077 03 38.     (W)   SCALED
 JV2766* NAVD 88 ORTHO HEIGHT -   158.20  (+/-2cm)      519.0   (feet) VERTCON3
 JV2766  ______________________________________________________________________
 JV2766  GEOID HEIGHT    -        -31.831 (meters)                     GEOID18
 JV2766  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2766
 JV2766.The horizontal coordinates were scaled from a map and have
 JV2766.an estimated accuracy of +/- 6 seconds.
 JV2766
 JV2766.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2766.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2766
 JV2766.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2766.GEOID18 height accuracy estimate available here.
 JV2766
 JV2766.The vertical order pertains to the NGVD 29 superseded value.
 JV2766
 JV2766.Click photographs - Photos may exist for this station.
 JV2766
 JV2766;                    North         East    Units  Estimated Accuracy
 JV2766;SPC MD       -   172,620.      394,770.      MT  (+/- 180 meters Scaled)
 JV2766
 JV2766_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ221433(NAD 83)
 JV2766
 JV2766                          SUPERSEDED SURVEY CONTROL
 JV2766
 JV2766  NGVD 29 (11/26/84)  158.407  (m)          519.71   (f) ADJUSTED    2 0
 JV2766
 JV2766.Superseded values are not recommended for survey control.
 JV2766
 JV2766.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2766.See file dsdata.pdf to determine how the superseded data were derived.
 JV2766
 JV2766_MARKER: DD = SURVEY DISK
 JV2766_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV2766_STAMPING: 1871
 JV2766_MARK LOGO: WSSC
 JV2766_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2766+STABILITY: SURFACE MOTION
 JV2766_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2766+SATELLITE: SATELLITE OBSERVATIONS - January 17, 1990
 JV2766
 JV2766  HISTORY     - Date     Condition        Report By
 JV2766  HISTORY     - UNK      MONUMENTED       WSSC
 JV2766  HISTORY     - 1939     GOOD             WSSC
 JV2766  HISTORY     - 19900117 GOOD             WSSC
 JV2766
 JV2766                          STATION DESCRIPTION
 JV2766
 JV2766'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2766'AT SUNSHINE.
 JV2766'AT THE INTERSECTION OF STATE HIGHWAY 97 AND THE UNITY ROAD, 100
 JV2766'FEET WEST OF THE HIGHWAY, 20 FEET SOUTH OF THE CENTERLINE OF THE
 JV2766'UNITY ROAD, AND 76.8 FEET NORTH OF THE NORTHWEST CORNER OF
 JV2766'MT. CARMEL METHODIST CHURCH.
 JV2766
 JV2766                          STATION RECOVERY (1990)
 JV2766
 JV2766'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV2766'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6689 ***********************************************************************
 JV6689  DESIGNATION -  1871A
 JV6689  PID         -  JV6689
 JV6689  STATE/COUNTY-  MD/MONTGOMERY
 JV6689  COUNTRY     -  US
 JV6689  USGS QUAD   -  SANDY SPRING (2016)
 JV6689
 JV6689                         *CURRENT SURVEY CONTROL
 JV6689  ______________________________________________________________________
 JV6689* NAD 83(2011) POSITION- 39 13 18.52796(N) 077 03 37.62592(W)   ADJUSTED
 JV6689* NAD 83(2011) ELLIP HT-   126.017 (meters)        (06/27/12)   ADJUSTED
 JV6689* NAD 83(2011) EPOCH   -  2010.00
 JV6689* NAVD 88 ORTHO HEIGHT -   157.9   (meters)      518.    (feet) GPS OBS
 JV6689  ______________________________________________________________________
 JV6689  NAVD 88 orthometric height was determined with an earlier geoid model
 JV6689  GEOID HEIGHT    -        -31.831 (meters)                     GEOID18
 JV6689  NAD 83(2011) X  -  1,107,946.018 (meters)                     COMP
 JV6689  NAD 83(2011) Y  - -4,822,248.364 (meters)                     COMP
 JV6689  NAD 83(2011) Z  -  4,011,504.022 (meters)                     COMP
 JV6689  LAPLACE CORR    -         -2.49  (seconds)                    DEFLEC18
 JV6689
 JV6689  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6689  Standards:
 JV6689         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6689            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6689  -------------------------------------------------------------------
 JV6689  NETWORK    3.63   4.45           1.62   1.32   2.27      0.04524680
 JV6689  -------------------------------------------------------------------
 JV6689  Click here for local accuracies and other accuracy information.
 JV6689
 JV6689.The horizontal coordinates were established by GPS observations
 JV6689.and adjusted by the National Geodetic Survey in June 2012.
 JV6689
 JV6689.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6689.been affixed to the stable North American tectonic plate. See 
 JV6689.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6689
 JV6689.The horizontal coordinates are valid at the epoch date displayed above
 JV6689.which is a decimal equivalence of Year/Month/Day.
 JV6689
 JV6689.The orthometric height was determined by GPS observations and a
 JV6689.high-resolution geoid model.
 JV6689
 JV6689.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6689.GEOID18 height accuracy estimate available here.
 JV6689
 JV6689.Click photographs - Photos may exist for this station.
 JV6689
 JV6689.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6689
 JV6689.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6689
 JV6689.The ellipsoidal height was determined by GPS observations
 JV6689.and is referenced to NAD 83.
 JV6689
 JV6689. The following values were computed from the NAD 83(2011) position.
 JV6689
 JV6689;                    North         East     Units Scale Factor Converg.
 JV6689;SPC MD       -   172,632.106   394,779.848   MT  0.99996804   -0 02 16.6
 JV6689;SPC MD       -   566,377.17  1,295,206.88   sFT  0.99996804   -0 02 16.6
 JV6689;UTM  18      - 4,343,414.702   322,132.522   MT  0.99998955   -1 18 11.6
 JV6689
 JV6689!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6689!SPC MD       -   0.99998023  x   0.99996804  =   0.99994827
 JV6689!UTM  18      -   0.99998023  x   0.99998955  =   0.99996978
 JV6689
 JV6689_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2213243414(NAD 83)
 JV6689
 JV6689                          SUPERSEDED SURVEY CONTROL
 JV6689
 JV6689  NAD 83(2007)-  39 13 18.52748(N)    077 03 37.62866(W) AD(2002.00) 0
 JV6689  ELLIP H (02/10/07)  126.012  (m)                       GP(2002.00)    
 JV6689  ELLIP H (08/30/02)  126.013  (m)                       GP(       ) 4 2
 JV6689  NAD 83(1993)-  39 13 18.52842(N)    077 03 37.62800(W) AD(       ) 1
 JV6689  ELLIP H (11/14/94)  125.945  (m)                       GP(       ) 4 2
 JV6689  NAD 83(1991)-  39 13 18.52715(N)    077 03 37.62779(W) AD(       ) 1
 JV6689  ELLIP H (01/27/92)  125.928  (m)                       GP(       ) 4 1
 JV6689  NAD 83(1986)-  39 13 18.52707(N)    077 03 37.63830(W) AD(       ) 1
 JV6689  NGVD 29             158.03   (m)          518.5    (f) LEVELING    3  
 JV6689
 JV6689.Superseded values are not recommended for survey control.
 JV6689
 JV6689.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6689.See file dsdata.pdf to determine how the superseded data were derived.
 JV6689
 JV6689_MARKER: DD = SURVEY DISK
 JV6689_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6689_STAMPING: 1871A 19801
 JV6689_MARK LOGO: WSSC
 JV6689_PROJECTION: FLUSH
 JV6689_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6689_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6689+STABILITY: SURFACE MOTION
 JV6689_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6689+SATELLITE: SATELLITE OBSERVATIONS - November 07, 2019
 JV6689
 JV6689  HISTORY     - Date     Condition        Report By
 JV6689  HISTORY     - 1989     MONUMENTED       WSSC
 JV6689  HISTORY     - 19940323 GOOD             MSI
 JV6689  HISTORY     - 20011116 GOOD             DMW
 JV6689  HISTORY     - 20030821 GOOD             GEOCAC
 JV6689  HISTORY     - 20090512 GOOD             JMTMD
 JV6689  HISTORY     - 20170802 GOOD             NGS
 JV6689  HISTORY     - 20191107 GOOD             NGS
 JV6689
 JV6689                          STATION DESCRIPTION
 JV6689
 JV6689'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6689'THE STATION IS LOCATED ABOUT 7.3 KM (4.5 MI) EAST OF LAYTONSVILLE, 7.7
 JV6689'KM (4.8 MI) NORTH OF OLNEY AND 4.5 KM (2.8 MI) NW OF BRIGHTON. TO
 JV6689'RESCH THE STATION FROM THE INTERSECTION OF STATE RDS RTE 97 (GEORGIA
 JV6689'AVE) AND RTE 650 (NEW HAMPSHIRE AVE) GO NW ON RTE 650 61.0 M
 JV6689'(200.1 FT) TO A GRAVEL DRIVE, TURN LEFT AND GO SW ON A GRAVEL DRIVE
 JV6689'30 M (98.4 FT) TO THE STATION ON THE RIGHT.  THE STATION IS 1 M
 JV6689'(3.3 FT) NE OF A WIRE FENCE IN THE REAR OF MT. CARMEL METHODIST
 JV6689'CHURCH. OWNERSHIP--MT. CARMEL METHODIST CHURCH. THE STATION MARK IS A
 JV6689'STANDARK WSSC BRASS DISK STAMPED 1871A  19801 SET IN THE TOP OF A
 JV6689'ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH WITH THE
 JV6689'GRASS. IT IS 13.5 M (44.3 FT) WEST OF THE FACE OF A 0.15 M (0.49 FT)
 JV6689'PINE, 13.8 M (45.3 FT) NW OF THE FACE OF A 0.305 M (1.001 FT) MAPLE
 JV6689'AND 24.7 M (81.0 FT) NORTH OF THE NORTH CORNER OF THE CHURCH. NO
 JV6689'REFERENCES WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS
 JV6689'AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 JV6689
 JV6689                          STATION RECOVERY (1994)
 JV6689
 JV6689'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 JV6689'RECOVERED AS DESCRIBED BY MEASUREMENT SCIENCE, INC. (1994).
 JV6689
 JV6689                          STATION RECOVERY (2001)
 JV6689
 JV6689'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV6689'RECOVERY NOTE
 JV6689'STATION FOUND IN GOOD CONDITION 11/2001
 JV6689
 JV6689                          STATION RECOVERY (2003)
 JV6689
 JV6689'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV6689'WITNESS POST OBSERVED BETWEEN MARK AND WIRE FENCE.
 JV6689
 JV6689                          STATION RECOVERY (2009)
 JV6689
 JV6689'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 JV6689'GOOD SITE FOR GPS (X,Y,Z, NOT CHECKED)
 JV6689
 JV6689                          STATION RECOVERY (2017)
 JV6689
 JV6689'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV6689'RECOVERED IN GOOD CONDITION.
 JV6689
 JV6689                          STATION RECOVERY (2019)
 JV6689
 JV6689'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV6689'THE STATION IS LOCATED ABOUT 9.0 MI (14.5 KM) EAST-SOUTHEAST OF
 JV6689'DAMASCUS, 6.4 MI (10.3 KM) WEST OF CLARKSVILLE AND 5.3 MI (8.5 KM)
 JV6689'NORTH-NORTHWEST OF SANDY SPRING IN THE SOUTHWEST JUNCTION OF MD 650
 JV6689'AND MD 97.
 JV6689'
 JV6689'THE MARK IS 64 FT (19.5 M) SOUTH OF A GATE POST AT THE ENTRANCE OF A
 JV6689'GRAVEL DRIVE WAY TO THE CHURCH, 59 FT (18.0 M) WEST OF UTILITY POLE
 JV6689'NUMBER 326481 AND 2 FT (0.6 M) 6 INCHES (15 CM) EAST OF THE FENCE
 JV6689'LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2659 ***********************************************************************
 JV2659  DESIGNATION -  1876 A WSSC
 JV2659  PID         -  JV2659
 JV2659  STATE/COUNTY-  MD/HOWARD
 JV2659  COUNTRY     -  US
 JV2659  USGS QUAD   -  WOODBINE (2016)
 JV2659
 JV2659                         *CURRENT SURVEY CONTROL
 JV2659  ______________________________________________________________________
 JV2659* NAD 83(1986) POSITION- 39 15 19.     (N) 077 02 01.     (W)   SCALED
 JV2659* NAVD 88 ORTHO HEIGHT -   164.39  (+/-2cm)      539.3   (feet) VERTCON3
 JV2659  ______________________________________________________________________
 JV2659  GEOID HEIGHT    -        -31.863 (meters)                     GEOID18
 JV2659  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2659
 JV2659.The horizontal coordinates were scaled from a map and have
 JV2659.an estimated accuracy of +/- 6 seconds.
 JV2659
 JV2659.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2659.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2659
 JV2659.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2659.GEOID18 height accuracy estimate available here.
 JV2659
 JV2659.The vertical order pertains to the NGVD 29 superseded value.
 JV2659
 JV2659.Click photographs - Photos may exist for this station.
 JV2659
 JV2659;                    North         East    Units  Estimated Accuracy
 JV2659;SPC MD       -   176,350.      397,100.      MT  (+/- 180 meters Scaled)
 JV2659
 JV2659_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ245470(NAD 83)
 JV2659
 JV2659                          SUPERSEDED SURVEY CONTROL
 JV2659
 JV2659  NGVD 29 (11/26/84)  164.596  (m)          540.01   (f) ADJUSTED    2 0
 JV2659
 JV2659.Superseded values are not recommended for survey control.
 JV2659
 JV2659.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2659.See file dsdata.pdf to determine how the superseded data were derived.
 JV2659
 JV2659_MARKER: Z = SEE DESCRIPTION
 JV2659_SETTING: 0 = UNSPECIFIED SETTING
 JV2659_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2659
 JV2659  HISTORY     - Date     Condition        Report By
 JV2659  HISTORY     - UNK      MONUMENTED       WSSC
 JV2659  HISTORY     - 1944     GOOD             WSSC
 JV2659
 JV2659                          STATION DESCRIPTION
 JV2659
 JV2659'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2659'0.9 MI W FROM GARY.
 JV2659'ABOUT 0.9 MILE WEST ALONG THE GARY-ROXBURY MILLS ROAD FROM THE
 JV2659'JUNCTION OF THE GARY-TRIADELPHIA ROAD NEAR GARY, HOWARD COUNTY,
 JV2659'AT THE ENTRANCE TO THE BREATHEY FARM NORTH OF THE ROAD, AND AT THE
 JV2659'SOUTHWEST CORNER OF THE EASTERNMOST GATEPOST.  AN UNMARKED POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1061 ***********************************************************************
 JV1061  DESIGNATION -  1877 WSSC
 JV1061  PID         -  JV1061
 JV1061  STATE/COUNTY-  MD/MONTGOMERY
 JV1061  COUNTRY     -  US
 JV1061  USGS QUAD   -  CLARKSVILLE (2016)
 JV1061
 JV1061                         *CURRENT SURVEY CONTROL
 JV1061  ______________________________________________________________________
 JV1061* NAD 83(1986) POSITION- 39 08 07.     (N) 076 59 42.     (W)   SCALED
 JV1061* NAVD 88 ORTHO HEIGHT -   168.47  (+/-2cm)      552.7   (feet) VERTCON3
 JV1061  ______________________________________________________________________
 JV1061  GEOID HEIGHT    -        -31.953 (meters)                     GEOID18
 JV1061  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1061
 JV1061.The horizontal coordinates were scaled from a map and have
 JV1061.an estimated accuracy of +/- 6 seconds.
 JV1061
 JV1061.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1061.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1061
 JV1061.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1061.GEOID18 height accuracy estimate available here.
 JV1061
 JV1061.The vertical order pertains to the NGVD 29 superseded value.
 JV1061
 JV1061.Click photographs - Photos may exist for this station.
 JV1061
 JV1061;                    North         East    Units  Estimated Accuracy
 JV1061;SPC MD       -   163,020.      400,430.      MT  (+/- 180 meters Scaled)
 JV1061
 JV1061_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ275336(NAD 83)
 JV1061
 JV1061                          SUPERSEDED SURVEY CONTROL
 JV1061
 JV1061  NGVD 29 (11/26/84)  168.684  (m)          553.42   (f) ADJUSTED    2 0
 JV1061
 JV1061.Superseded values are not recommended for survey control.
 JV1061
 JV1061.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1061.See file dsdata.pdf to determine how the superseded data were derived.
 JV1061
 JV1061_MARKER: DD = SURVEY DISK
 JV1061_SETTING: 0 = UNSPECIFIED SETTING
 JV1061_SP_SET: IRON PIPE
 JV1061_STAMPING: 1877
 JV1061_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1061
 JV1061  HISTORY     - Date     Condition        Report By
 JV1061  HISTORY     - UNK      MONUMENTED       WSSC
 JV1061  HISTORY     - 1939     GOOD             WSSC
 JV1061  HISTORY     - 1967     GOOD             CGS
 JV1061
 JV1061                          STATION DESCRIPTION
 JV1061
 JV1061'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1061'AT EDNOR.
 JV1061'ON COLESVILLE ROAD, ABOUT 200 FEET SOUTH OF THE MAIN ROAD
 JV1061'INTERSECTION, 50.5 FEET WEST OF THE CENTERLINE OF THE ROAD, IN
 JV1061'THE LAWN OF A HOUSE, 35.8 FEET NORTHEAST OF THE NORTHEAST CORNER
 JV1061'OF THE HOUSE, 46.1 FEET NORTH OF THE NORTHEAST CORNER OF THE
 JV1061'PORCH, AND 12 FEET SOUTHWEST OF A 40-INCH OAK TREE.
 JV1061
 JV1061                          STATION RECOVERY (1967)
 JV1061
 JV1061'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JV1061'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1082 ***********************************************************************
 JV1082  DESIGNATION -  1878
 JV1082  PID         -  JV1082
 JV1082  STATE/COUNTY-  MD/HOWARD
 JV1082  COUNTRY     -  US
 JV1082  USGS QUAD   -  CLARKSVILLE (2016)
 JV1082
 JV1082                         *CURRENT SURVEY CONTROL
 JV1082  ______________________________________________________________________
 JV1082* NAD 83(1986) POSITION- 39 08 46.     (N) 076 54 16.     (W)   SCALED
 JV1082* NAVD 88 ORTHO HEIGHT -   131.585 (meters)      431.71  (feet) ADJUSTED
 JV1082  ______________________________________________________________________
 JV1082  GEOID HEIGHT    -        -32.112 (meters)                     GEOID18
 JV1082  DYNAMIC HEIGHT  -        131.514 (meters)      431.48  (feet) COMP
 JV1082  MODELED GRAVITY -    980,082.9   (mgal)                       NAVD 88
 JV1082
 JV1082  VERT ORDER      -  SECOND    CLASS 0
 JV1082
 JV1082.The horizontal coordinates were scaled from a map and have
 JV1082.an estimated accuracy of +/- 6 seconds.
 JV1082
 JV1082.The orthometric height was determined by differential leveling and
 JV1082.adjusted by the NATIONAL GEODETIC SURVEY
 JV1082.in June 1991.
 JV1082
 JV1082.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1082.GEOID18 height accuracy estimate available here.
 JV1082
 JV1082.Click photographs - Photos may exist for this station.
 JV1082
 JV1082.The dynamic height is computed by dividing the NAVD 88
 JV1082.geopotential number by the normal gravity value computed on the
 JV1082.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1082.degrees latitude (g = 980.6199 gals.).
 JV1082
 JV1082.The modeled gravity was interpolated from observed gravity values.
 JV1082
 JV1082;                    North         East    Units  Estimated Accuracy
 JV1082;SPC MD       -   164,230.      408,260.      MT  (+/- 180 meters Scaled)
 JV1082
 JV1082_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ354347(NAD 83)
 JV1082
 JV1082                          SUPERSEDED SURVEY CONTROL
 JV1082
 JV1082  NGVD 29 (11/26/84)  131.801  (m)          432.42   (f) ADJUSTED    2 0
 JV1082
 JV1082.Superseded values are not recommended for survey control.
 JV1082
 JV1082.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1082.See file dsdata.pdf to determine how the superseded data were derived.
 JV1082
 JV1082_STAMPING: 1878
 JV1082
 JV1082  HISTORY     - Date     Condition        Report By
 JV1082  HISTORY     - UNK      MONUMENTED       WSSC
 JV1082  HISTORY     - 1939     GOOD             WSSC
 JV1082  HISTORY     - 1966     GOOD             CGS
 JV1082  HISTORY     - 20201028 MARK NOT FOUND   PROFLN
 JV1082
 JV1082                          STATION DESCRIPTION
 JV1082
 JV1082'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1082'0.2 MI NW FROM SCAGGSVILLE.
 JV1082'ABOUT 0.25 MILE NORTHWEST ALONG THE LAUREL-FULTON ROAD FROM THE
 JV1082'INTERSECTION OF THE BURTONSVILLE-COLUMBIA PIKE AT SCAGGSVILLE,
 JV1082'HOWARD COUNTY, 124.5 FEET SOUTHWEST OF THE CENTER LINE OF THE
 JV1082'ROAD, NEAR A HOUSE, 49.5 FEET SOUTHWEST OF THE NORTHWEST CORNER
 JV1082'OF THE FRONT PORCH, 44.2 FEET WEST OF THE SOUTHWEST CORNER OF
 JV1082'THE HOUSE, AND 25.2 FEET NORTH OF THE NORTHEAST CORNER OF A SHED.
 JV1082'A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED
 JV1082'1878 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1082
 JV1082                          STATION RECOVERY (1966)
 JV1082
 JV1082'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV1082'RECOVERED IN GOOD CONDITION.
 JV1082
 JV1082                          STATION RECOVERY (2020)
 JV1082
 JV1082'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV1082'BELIEVED DESTROYED BY HIGHWAY CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2658 ***********************************************************************
 JV2658  DESIGNATION -  1879
 JV2658  PID         -  JV2658
 JV2658  STATE/COUNTY-  MD/HOWARD
 JV2658  COUNTRY     -  US
 JV2658  USGS QUAD   -  WOODBINE (2016)
 JV2658
 JV2658                         *CURRENT SURVEY CONTROL
 JV2658  ______________________________________________________________________
 JV2658* NAD 83(1986) POSITION- 39 15 21.     (N) 077 02 43.     (W)   SCALED
 JV2658* NAVD 88 ORTHO HEIGHT -   114.84  (+/-2cm)      376.8   (feet) VERTCON3
 JV2658  ______________________________________________________________________
 JV2658  GEOID HEIGHT    -        -31.852 (meters)                     GEOID18
 JV2658  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2658
 JV2658.The horizontal coordinates were scaled from a map and have
 JV2658.an estimated accuracy of +/- 6 seconds.
 JV2658
 JV2658.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2658.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2658
 JV2658.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2658.GEOID18 height accuracy estimate available here.
 JV2658
 JV2658.The vertical order pertains to the NGVD 29 superseded value.
 JV2658
 JV2658.Click photographs - Photos may exist for this station.
 JV2658
 JV2658;                    North         East    Units  Estimated Accuracy
 JV2658;SPC MD       -   176,410.      396,090.      MT  (+/- 180 meters Scaled)
 JV2658
 JV2658_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ235471(NAD 83)
 JV2658
 JV2658                          SUPERSEDED SURVEY CONTROL
 JV2658
 JV2658  NGVD 29 (11/26/84)  115.046  (m)          377.45   (f) ADJUSTED    2 0
 JV2658
 JV2658.Superseded values are not recommended for survey control.
 JV2658
 JV2658.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2658.See file dsdata.pdf to determine how the superseded data were derived.
 JV2658
 JV2658_MARKER: DD = SURVEY DISK
 JV2658_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV2658_STAMPING: 1879
 JV2658_MARK LOGO: WSSC
 JV2658_MAGNETIC: P = MARKER IS A STEEL PIPE
 JV2658_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2658
 JV2658  HISTORY     - Date     Condition        Report By
 JV2658  HISTORY     - UNK      MONUMENTED       WSSC
 JV2658  HISTORY     - 1944     GOOD             WSSC
 JV2658  HISTORY     - 20210619 MARK NOT FOUND   PROFLN
 JV2658  HISTORY     - 20220315 MARK NOT FOUND   PROFLN
 JV2658
 JV2658                          STATION DESCRIPTION
 JV2658
 JV2658'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2658'0.5 MI E FROM ROXBURY MILLS.
 JV2658'ABOUT 0.5 MILE EAST ALONG THE GARY-ROXBURY MILLS ROAD FROM THE
 JV2658'ROAD INTERSECTION AT ROXBURY MILLS, HOWARD COUNTY, NEAR THE
 JV2658'CROSSING OF CATTAIL CREEK, ABOUT 150 FEET SOUTHWEST OF A LOG CABIN
 JV2658'ON A HILL, 56 FEET NORTH OF THE CENTER LINE OF THE ROAD, ABOUT
 JV2658'20 FEET EAST OF THE EAST BRANCH OF CATTAIL CREEK, 8.3 FEET SOUTH
 JV2658'OF AN 18-INCH HICKORY TREE, AND 8.5 FEET NORTH OF AN 8-INCH ASH
 JV2658'TREE.  A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK,
 JV2658'STAMPED 1879 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV2658
 JV2658                          STATION RECOVERY (2021)
 JV2658
 JV2658'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV2658'NOT RECOVERED, MIGHT STILL BE THERE.  THE LOCATION OF THE MARK COULD
 JV2658'NOT BE DETERMINED FROM THE INFORMATION AVAILABLE, EITHER IN THE
 JV2658'NATIONAL GEODETIC SURVEY DESCRIPTION OR ON THE WSSC BENCH MARK RECORD.
 JV2658'A LIKELY LOCATION BASED ON THE SCALED POSITION APPEARS TO BE ON
 JV2658'PRIVATE PROPERTY BEHIND A LOCKED GATE.
 JV2658'
 JV2658'THE ROAD CALLED GARY-ROXBURY MILLS IN 1944 MAY BE KNOWN SIMPLY AS
 JV2658'ROXBURY ROAD TODAY, OR IT MAY BE A DIFFERENT ROAD.  PROXIMITY OF THAT
 JV2658'ROAD TO CATTAIL CREEK AND TO A LOG CABIN ON A HILL COULD NOT BE FOUND
 JV2658'TODAY.
 JV2658'
 JV2658'THE ROUTE OF THE LEVELING, PROCEEDING WESTERLY FROM 1892 WSSC AT THE
 JV2658'JUNCTION OF HOWARD ROAD AND TRIADELPHIA ROAD, MAY HAVE FOLLOWED
 JV2658'CATTAIL CREEK IN THIS AREA, SINCE THE MARK WEST OF THIS ONE, 1881
 JV2658'WSSC, IS AT THE BRIDGE CARRYING STATE ROUTE 97 OVER CATTAIL CREEK.
 JV2658'THE WSSC DESCRIPTION CALLS THIS MARK AS 56 FT (17.1 M) NORTH OF CENTER
 JV2658'OF A DIRT ROAD, WHICH THE SKETCH SHOWS CROSSING THE CREEK AT TWO
 JV2658'BRIDGES CLOSE TO EACH OTHER.  THE MARK IS SHOWN ON THE EAST SIDE OF
 JV2658'THE EAST BRANCH OF THE CREEK, WHICH IS CALLED A BRANCH IN THE WSSC
 JV2658'DESCRIPTION, 20 FT (6.1 M) EAST OF THE EAST BRANCH.  THIS ROUTE
 JV2658'APPEARS TO BE IN FOREST NOW AS SEEN IN AERIAL IMAGERY, A HIKE OF 0.35
 JV2658'MI (0.56 KM) CROSS COUNTRY WEST OF THE LOCKED GATE.
 JV2658
 JV2658                          STATION RECOVERY (2022)
 JV2658
 JV2658'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2022 (JRO)
 JV2658'NOT RECOVERED BUT THE GENERAL AREA WAS DETERMINED.  TAKE THE DRIVEWAY
 JV2658'OR FARM ROAD TO THE SOUTHEAST OFF GEORGIA AVENUE / HIGHWAY 97
 JV2658'APPROXIMATELY OPPOSITE THE SOUTHERLY BRANCH OF ROXBURY MILL ROAD.
 JV2658'FOLLOW THE DRIVEWAY AS IT BENDS EAST TO THE TWO-STORY HOUSE ON THE
 JV2658'RIGHT ABOUT 500 FT (152.4 M) IN.  GET PERMISSION FROM THE OWNER THERE
 JV2658'TO CONTINUE ON THE PROPERTY ABOUT ANOTHER 0.3 MI (0.5 KM) EASTERLY TO
 JV2658'WHERE THE DRIVEWAY KIND OF ENDS ON GRASS AT THE WOODS LINE.
 JV2658'
 JV2658'FROM THERE HIKE EASTERLY TO THE COORDINATES, CROSSING CATTAIL CREEK AT
 JV2658'ANY SPOT IT IS PASSABLE.  UPON REACHING THE COORDINATES, ONE SEES A
 JV2658'CONCRETE BRIDGE ABOUT 70 FT (21.3 M) TO THE SOUTHEAST FROM WHICH THE
 JV2658'OLD ANNAPOLIS ROAD CAN BE ESTIMATED.  INTERSECT THE ONLY TWO TIES THAT
 JV2658'POSSIBLY REMAIN VALID, SINCE THE TREES CALLED FOR ARE GONE AND THE
 JV2658'CABIN IS GONE.  INTERSECT THE 56 FT (17.1 M) NORTH FROM THE CENTER OF
 JV2658'THAT ROAD AND 20 FT (6.1 M) EAST FROM THE CENTER OF THE EAST (SMALLER)
 JV2658'BRANCH OF CATTAIL CREEK AND SEARCH.  UNFORTUNATELY THE STRANDS OF AN
 JV2658'OLD FENCE IN THE DIRT RUN ALONG PARALLEL TO THE CREEK AND RENDER A
 JV2658'METAL DETECTOR PRACTICALLY USELESS.  BUT THE CONCRETE-FILLED IRON PIPE
 JV2658'SHOULD BE EVIDENT.  ON TODAYS VISIT THE SEARCH FOR HOW TO ACCESS THE
 JV2658'PROPERTY AND REACH THE COORDINATES CONSUMED MOST OF THE AVAILABLE
 JV2658'TIME, SO THERE WAS NO TIME TO CUT THE THICK BRIARS AT THE SITE OF THE
 JV2658'MARK.  NO EVIDENCE OF THE LOG CABIN CALLED FOR ON A HILL WAS SEEN.
 JV2658'HERE AGAIN, THICK BRIARS IMPEDED MUCH OF A SEARCH FOR THE CABIN.
 JV2658'
 JV2658'THE PROPERTY OWNER WAS COOPERATIVE AND ENCOURAGING.  THE HOWARD COUNTY
 JV2658'HISTORICAL SOCIETY WAS CONSULTED AND DID RESEARCH BUT HAD NO
 JV2658'INFORMATION ABOUT THIS BRIDGE.  IT IS UNFORTUNATE THIS MARK WAS PLACED
 JV2658'IN A MONUMENT AND NOT REFERENCED TO THE BRIDGE, OR BETTER YET ACTUALLY
 JV2658'PLACED IN THE BRIDGE AS NEARBY WSSC MARK 1194 AT THE OLD ROXBURY
 JV2658'MILL SITE WAS.  WSSC SURVEY DEPARTMENT CAN PROVIDE A SKETCH OF THIS
 JV2658'MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1096 ***********************************************************************
 JV1096  DESIGNATION -  1880
 JV1096  PID         -  JV1096
 JV1096  STATE/COUNTY-  MD/HOWARD
 JV1096  COUNTRY     -  US
 JV1096  USGS QUAD   -  CLARKSVILLE (2016)
 JV1096
 JV1096                         *CURRENT SURVEY CONTROL
 JV1096  ______________________________________________________________________
 JV1096* NAD 83(1986) POSITION- 39 13 19.     (N) 076 58 29.     (W)   SCALED
 JV1096* NAVD 88 ORTHO HEIGHT -   180.08  (+/-2cm)      590.8   (feet) VERTCON3
 JV1096  ______________________________________________________________________
 JV1096  GEOID HEIGHT    -        -31.957 (meters)                     GEOID18
 JV1096  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1096
 JV1096.The horizontal coordinates were scaled from a map and have
 JV1096.an estimated accuracy of +/- 6 seconds.
 JV1096
 JV1096.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1096.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1096
 JV1096.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1096.GEOID18 height accuracy estimate available here.
 JV1096
 JV1096.The vertical order pertains to the NGVD 29 superseded value.
 JV1096
 JV1096.Click photographs - Photos may exist for this station.
 JV1096
 JV1096;                    North         East    Units  Estimated Accuracy
 JV1096;SPC MD       -   172,650.      402,180.      MT  (+/- 180 meters Scaled)
 JV1096
 JV1096_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ295432(NAD 83)
 JV1096
 JV1096                          SUPERSEDED SURVEY CONTROL
 JV1096
 JV1096  NGVD 29 (11/26/84)  180.294  (m)          591.51   (f) ADJUSTED    2 0
 JV1096
 JV1096.Superseded values are not recommended for survey control.
 JV1096
 JV1096.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1096.See file dsdata.pdf to determine how the superseded data were derived.
 JV1096
 JV1096_MARKER: DD = SURVEY DISK
 JV1096_SP_SET: IRON PIPE
 JV1096_STAMPING: 1880
 JV1096_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1096
 JV1096  HISTORY     - Date     Condition        Report By
 JV1096  HISTORY     - UNK      MONUMENTED       WSSC
 JV1096  HISTORY     - 1939     GOOD             WSSC
 JV1096  HISTORY     - 19990114 MARK NOT FOUND   MDSHA
 JV1096  HISTORY     - 20210619 MARK NOT FOUND   PROFLN
 JV1096
 JV1096                          STATION DESCRIPTION
 JV1096
 JV1096'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1096'1.3 MI SE FROM DAYTON.
 JV1096'ABOUT 1.3 MILES SOUTHEAST ALONG THE DAYTON-CLARKSVILLE ROAD FROM
 JV1096'DAYTON, HOWARD COUNTY, ABOUT 100 FEET NORTHWEST OF THE JUNCTION
 JV1096'OF THE HIGHLAND ROAD, 35 FEET SOUTH OF THE CENTER LINE OF THE
 JV1096'CONCRETE ROAD, 6.1 FEET EAST OF AN 8-INCH HICKORY TREE, AND 5
 JV1096'FEET WEST OF THE WEST EDGE OF A PRIVATE LANE.  A WASHINGTON
 JV1096'SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED 1880 AND SET
 JV1096'IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1096
 JV1096                          STATION RECOVERY (1999)
 JV1096
 JV1096'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV1096'NOT RECOVERED.
 JV1096
 JV1096                          STATION RECOVERY (2021)
 JV1096
 JV1096'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV1096'THERE IS NOTHING LEFT FROM 1939 TO MEASURE FROM - NO HICKORY TREE AND
 JV1096'LOCATIONS OF THE ROADS AND THE PRIVATE LANE ARE CHANGED, PER LOCAL
 JV1096'RESIDENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1097 ***********************************************************************
 JV1097  DESIGNATION -  1880 A
 JV1097  PID         -  JV1097
 JV1097  STATE/COUNTY-  MD/HOWARD
 JV1097  COUNTRY     -  US
 JV1097  USGS QUAD   -  CLARKSVILLE (2016)
 JV1097
 JV1097                         *CURRENT SURVEY CONTROL
 JV1097  ______________________________________________________________________
 JV1097* NAD 83(1986) POSITION- 39 13 54.8    (N) 076 58 38.1    (W)   HD_HELD2
 JV1097* NAVD 88 ORTHO HEIGHT -   150.647 (meters)      494.25  (feet) ADJUSTED
 JV1097  ______________________________________________________________________
 JV1097  GEOID HEIGHT    -        -31.948 (meters)                     GEOID18
 JV1097  DYNAMIC HEIGHT  -        150.566 (meters)      493.98  (feet) COMP
 JV1097  MODELED GRAVITY -    980,088.7   (mgal)                       NAVD 88
 JV1097
 JV1097  VERT ORDER      -  SECOND    CLASS I
 JV1097
 JV1097.The horizontal coordinates were established by autonomous hand held GPS
 JV1097.observations and have an estimated accuracy of +/- 10 meters.
 JV1097
 JV1097.The orthometric height was determined by differential leveling and
 JV1097.adjusted by the NATIONAL GEODETIC SURVEY
 JV1097.in March 2010.
 JV1097
 JV1097.No vertical observational check was made to the station.
 JV1097
 JV1097.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1097.GEOID18 height accuracy estimate available here.
 JV1097
 JV1097.Click photographs - Photos may exist for this station.
 JV1097
 JV1097.The dynamic height is computed by dividing the NAVD 88
 JV1097.geopotential number by the normal gravity value computed on the
 JV1097.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1097.degrees latitude (g = 980.6199 gals.).
 JV1097
 JV1097.The modeled gravity was interpolated from observed gravity values.
 JV1097
 JV1097;                    North         East    Units  Estimated Accuracy
 JV1097;SPC MD       -   173,749.      401,964.      MT  (+/- 10 meters HH2 GPS)
 JV1097
 JV1097_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2933944372(NAD 83)
 JV1097
 JV1097                          SUPERSEDED SURVEY CONTROL
 JV1097
 JV1097  NGVD 29 (11/26/84)  150.840  (m)          494.88   (f) ADJUSTED    2 0
 JV1097
 JV1097.Superseded values are not recommended for survey control.
 JV1097
 JV1097.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1097.See file dsdata.pdf to determine how the superseded data were derived.
 JV1097
 JV1097_MARKER: Q = CHISELED SQUARE
 JV1097_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1097_SP_SET: BOX CULVERT
 JV1097_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV1097_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1097+STABILITY: SURFACE MOTION
 JV1097_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1097+SATELLITE: SATELLITE OBSERVATIONS - April 25, 2007
 JV1097
 JV1097  HISTORY     - Date     Condition        Report By
 JV1097  HISTORY     - UNK      MONUMENTED       WSSC
 JV1097  HISTORY     - 1939     GOOD             WSSC
 JV1097  HISTORY     - 20070425 GOOD             MDSHA
 JV1097
 JV1097                          STATION DESCRIPTION
 JV1097
 JV1097'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1097'0.8 MI SE FROM DAYTON.
 JV1097'ABOUT 0.75 MILE SOUTHEAST ALONG THE DAYTON-CLARKSVILLE ROAD FROM
 JV1097'DAYTON, HOWARD COUNTY, AT A CONCRETE CULVERT UNDER THE ROAD, AND
 JV1097'ON THE TOP OF THE NORTHEAST WING WALL.  A CHISELED SQUARE.
 JV1097
 JV1097                          STATION RECOVERY (2007)
 JV1097
 JV1097'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV1097'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2656 ***********************************************************************
 JV2656  DESIGNATION -  1881 WSSC
 JV2656  PID         -  JV2656
 JV2656  STATE/COUNTY-  MD/HOWARD
 JV2656  COUNTRY     -  US
 JV2656  USGS QUAD   -  WOODBINE (2016)
 JV2656
 JV2656                         *CURRENT SURVEY CONTROL
 JV2656  ______________________________________________________________________
 JV2656* NAD 83(1986) POSITION- 39 15 21.7    (N) 077 03 04.6    (W)   HD_HELD2
 JV2656* NAVD 88 ORTHO HEIGHT -   117.19  (+/-2cm)      384.5   (feet) VERTCON3
 JV2656  ______________________________________________________________________
 JV2656  GEOID HEIGHT    -        -31.847 (meters)                     GEOID18
 JV2656  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2656
 JV2656.The horizontal coordinates were established by autonomous hand held GPS
 JV2656.observations and have an estimated accuracy of +/- 10 meters.
 JV2656
 JV2656.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2656.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2656
 JV2656.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2656.GEOID18 height accuracy estimate available here.
 JV2656
 JV2656.The vertical order pertains to the NGVD 29 superseded value.
 JV2656
 JV2656.Click photographs - Photos may exist for this station.
 JV2656
 JV2656;                    North         East    Units  Estimated Accuracy
 JV2656;SPC MD       -   176,430.      395,574.      MT  (+/- 10 meters HH2 GPS)
 JV2656
 JV2656_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2301047194(NAD 83)
 JV2656
 JV2656                          SUPERSEDED SURVEY CONTROL
 JV2656
 JV2656  NGVD 29 (11/26/84)  117.389  (m)          385.13   (f) ADJUSTED    2 0
 JV2656
 JV2656.Superseded values are not recommended for survey control.
 JV2656
 JV2656.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2656.See file dsdata.pdf to determine how the superseded data were derived.
 JV2656
 JV2656_MARKER: DD = SURVEY DISK
 JV2656_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2656_SP_SET: BRIDGE
 JV2656_STAMPING: 1881
 JV2656_MARK LOGO: WSSC
 JV2656_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2656_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2656+SATELLITE: SATELLITE OBSERVATIONS - June 19, 2021
 JV2656
 JV2656  HISTORY     - Date     Condition        Report By
 JV2656  HISTORY     - UNK      MONUMENTED       WSSC
 JV2656  HISTORY     - 1944     GOOD             WSSC
 JV2656  HISTORY     - 20030821 GOOD             GEOCAC
 JV2656  HISTORY     - 20050405 GOOD             USPSQD
 JV2656  HISTORY     - 20100608 GOOD             NGS
 JV2656  HISTORY     - 20210619 GOOD             PROFLN
 JV2656
 JV2656                          STATION DESCRIPTION
 JV2656
 JV2656'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2656'AT ROXBURY MILLS.
 JV2656'ON THE SUNSHINE-COOKSVILLE ROAD (STATE HIGHWAY 97), AT THE BRIDGE
 JV2656'OVER CATTAIL CREEK, AND IN THE TOP OF THE SOUTHWEST WING WALL.
 JV2656
 JV2656                          STATION RECOVERY (2003)
 JV2656
 JV2656'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV2656'LOCATION IS BRIDGE STRUCTURE 13037, AND THE DISK IS ACROSS THE HIGHWAY
 JV2656'FROM THE PAINTED NUMBER ON THE BRIDGE. THERE ARE TWO NARROW CONCRETE
 JV2656'BRIDGES IN THIS VICINITY. THIS ONE IS THE MORE SOUTHERLY AND LARGER OF
 JV2656'THE TWO AND NEAREST THE INTERSECTION OF ROXBURY MILL ROAD.
 JV2656
 JV2656                          STATION RECOVERY (2005)
 JV2656
 JV2656'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV2656'RECOVERED IN GOOD CONDITION.
 JV2656
 JV2656                          STATION RECOVERY (2010)
 JV2656
 JV2656'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV2656'RECOVERED IN GOOD CONDITION.
 JV2656
 JV2656                          STATION RECOVERY (2021)
 JV2656
 JV2656'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV2656'THE MARK IS IN THE SLOPING SECTION OF THE WING WALL, NOT AT THE TOP OF
 JV2656'THE WING WALL AS WOULD BE CUSTOMARY AND IS ONLY 2 INCHES (5 CM) IN
 JV2656'DIAMETER, EASY TO MISS.  IT IS 2.5 FT (0.8 M) SOUTHWEST ALONG THE WING
 JV2656'WALL FROM THE CORNER OF THE BRIDGE WALL, ABOUT 2 FT (0.6 M) OUTSIDE OR
 JV2656'NORTHWEST OF THE OUTSIDE OR NORTHWEST EDGE OF THE BRIDGE WALL, ABOUT 2
 JV2656'FT (0.6 M) BELOW RIGHT 97 AND 1 FT (0.3 M) BELOW THE TOP CORNER OF THE
 JV2656'WING WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2612 ***********************************************************************
 JV2612  DESIGNATION -  1885 WSSC
 JV2612  PID         -  JV2612
 JV2612  STATE/COUNTY-  MD/MONTGOMERY
 JV2612  COUNTRY     -  US
 JV2612  USGS QUAD   -  SANDY SPRING (2016)
 JV2612
 JV2612                         *CURRENT SURVEY CONTROL
 JV2612  ______________________________________________________________________
 JV2612* NAD 83(1986) POSITION- 39 09 09.     (N) 077 04 00.     (W)   SCALED
 JV2612* NAVD 88 ORTHO HEIGHT -   165.90  (+/-2cm)      544.3   (feet) VERTCON3
 JV2612  ______________________________________________________________________
 JV2612  GEOID HEIGHT    -        -31.819 (meters)                     GEOID18
 JV2612  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2612
 JV2612.The horizontal coordinates were scaled from a map and have
 JV2612.an estimated accuracy of +/- 6 seconds.
 JV2612
 JV2612.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2612.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2612
 JV2612.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2612.GEOID18 height accuracy estimate available here.
 JV2612
 JV2612.The vertical order pertains to the NGVD 29 superseded value.
 JV2612
 JV2612.Click photographs - Photos may exist for this station.
 JV2612
 JV2612;                    North         East    Units  Estimated Accuracy
 JV2612;SPC MD       -   164,940.      394,240.      MT  (+/- 180 meters Scaled)
 JV2612
 JV2612_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ214357(NAD 83)
 JV2612
 JV2612                          SUPERSEDED SURVEY CONTROL
 JV2612
 JV2612  NGVD 29 (11/26/84)  166.105  (m)          544.96   (f) ADJUSTED    2 0
 JV2612
 JV2612.Superseded values are not recommended for survey control.
 JV2612
 JV2612.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2612.See file dsdata.pdf to determine how the superseded data were derived.
 JV2612
 JV2612_MARKER: DD = SURVEY DISK
 JV2612_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2612_SP_SET: BUILDING
 JV2612_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2612
 JV2612  HISTORY     - Date     Condition        Report By
 JV2612  HISTORY     - UNK      MONUMENTED       WSSC
 JV2612  HISTORY     - 1967     GOOD             MDSRC
 JV2612  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2612
 JV2612                          STATION DESCRIPTION
 JV2612
 JV2612'DESCRIBED BY MD STATE ROADS COMM 1967
 JV2612'AT OLNEY.
 JV2612'AT THE SOUTHEAST CORNER OF THE INTERSECTION OF GEORGIA AVENUE
 JV2612'(STATE HIGHWAY 97) AND THE LAYTONVILLE ROAD, AT A D.G.S. STORE,
 JV2612'IN THE WEST WALL, 5 FEET NORTH OF THE SOUTHWEST CORNER, AND 1.5
 JV2612'FEET ABOVE THE GROUND.
 JV2612
 JV2612                          STATION RECOVERY (1995)
 JV2612
 JV2612'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2612'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4066 ***********************************************************************
 JV4066  DESIGNATION -  1885 WSSC RESET 1978
 JV4066  PID         -  JV4066
 JV4066  STATE/COUNTY-  MD/MONTGOMERY
 JV4066  COUNTRY     -  US
 JV4066  USGS QUAD   -  SANDY SPRING (2016)
 JV4066
 JV4066                         *CURRENT SURVEY CONTROL
 JV4066  ______________________________________________________________________
 JV4066* NAD 83(1986) POSITION- 39 09 09.     (N) 077 04 00.     (W)   SCALED
 JV4066* NAVD 88 ORTHO HEIGHT -   165.10  (+/-2cm)      541.7   (feet) VERTCON3
 JV4066  ______________________________________________________________________
 JV4066  GEOID HEIGHT    -        -31.819 (meters)                     GEOID18
 JV4066  VERT ORDER      -  THIRD (See Below)
 JV4066
 JV4066.The horizontal coordinates were scaled from a map and have
 JV4066.an estimated accuracy of +/- 6 seconds.
 JV4066
 JV4066.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4066.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4066
 JV4066.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4066.GEOID18 height accuracy estimate available here.
 JV4066
 JV4066.The vertical order pertains to the NGVD 29 superseded value.
 JV4066
 JV4066.Click photographs - Photos may exist for this station.
 JV4066
 JV4066;                    North         East    Units  Estimated Accuracy
 JV4066;SPC MD       -   164,940.      394,240.      MT  (+/- 180 meters Scaled)
 JV4066
 JV4066_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ214357(NAD 83)
 JV4066
 JV4066                          SUPERSEDED SURVEY CONTROL
 JV4066
 JV4066  NGVD 29 (??/??/??)  165.31   (m)          542.4    (f) RESET       3  
 JV4066
 JV4066.Superseded values are not recommended for survey control.
 JV4066
 JV4066.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4066.See file dsdata.pdf to determine how the superseded data were derived.
 JV4066
 JV4066_MARKER: DB = BENCH MARK DISK
 JV4066_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV4066_SP_SET: LANDING
 JV4066_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4066
 JV4066  HISTORY     - Date     Condition        Report By
 JV4066  HISTORY     - 1978     MONUMENTED       WSSC
 JV4066  HISTORY     - 19950323 MARK NOT FOUND   USPSQD
 JV4066  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV4066
 JV4066                          STATION DESCRIPTION
 JV4066
 JV4066'DESCRIBED BY WASH SUBURB SAN COMM 1978
 JV4066'AT OLNEY.
 JV4066'LOCATED 0.1 MILE SW OF THE INTERSECTION OF STATE HIGHWAY 108 AND 97,
 JV4066'IN THE N CORNER OF A CONCRETE LANDING ON THE N SIDE OF THE SANDY
 JV4066'SPRINGS NATIONAL BANK AND SAVINGS INSTITUTION, 78 FT SE OF THE
 JV4066'CENTER OF STATE HIGHWAY 97, 4.3 FT E OF THE N CORNER OF THE BANK,
 JV4066'1.9 FT NNE OF THE NE SIDE OF THE BANK, 1.9 FT SSW OF THE NE EDGE OF
 JV4066'THE CONCRETE LANDING AND 10.4 FT W OF THE DRIVE IN WINDOW BUILDING.
 JV4066
 JV4066                          STATION RECOVERY (1995)
 JV4066
 JV4066'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4066'MARK NOT FOUND.
 JV4066
 JV4066                          STATION RECOVERY (1995)
 JV4066
 JV4066'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4066'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1092 ***********************************************************************
 JV1092  DESIGNATION -  1887 WSSC
 JV1092  PID         -  JV1092
 JV1092  STATE/COUNTY-  MD/HOWARD
 JV1092  COUNTRY     -  US
 JV1092  USGS QUAD   -  CLARKSVILLE (2016)
 JV1092
 JV1092                         *CURRENT SURVEY CONTROL
 JV1092  ______________________________________________________________________
 JV1092* NAD 83(1986) POSITION- 39 12 01.     (N) 076 58 44.     (W)   SCALED
 JV1092* NAVD 88 ORTHO HEIGHT -   153.29  (+/-2cm)      502.9   (feet) VERTCON3
 JV1092  ______________________________________________________________________
 JV1092  GEOID HEIGHT    -        -31.960 (meters)                     GEOID18
 JV1092  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1092
 JV1092.The horizontal coordinates were scaled from a map and have
 JV1092.an estimated accuracy of +/- 6 seconds.
 JV1092
 JV1092.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1092.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1092
 JV1092.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1092.GEOID18 height accuracy estimate available here.
 JV1092
 JV1092.The vertical order pertains to the NGVD 29 superseded value.
 JV1092
 JV1092.Click photographs - Photos may exist for this station.
 JV1092
 JV1092;                    North         East    Units  Estimated Accuracy
 JV1092;SPC MD       -   170,240.      401,820.      MT  (+/- 180 meters Scaled)
 JV1092
 JV1092_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ291408(NAD 83)
 JV1092
 JV1092                          SUPERSEDED SURVEY CONTROL
 JV1092
 JV1092  NGVD 29 (11/26/84)  153.504  (m)          503.62   (f) ADJUSTED    2 0
 JV1092
 JV1092.Superseded values are not recommended for survey control.
 JV1092
 JV1092.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1092.See file dsdata.pdf to determine how the superseded data were derived.
 JV1092
 JV1092_MARKER: DD = SURVEY DISK
 JV1092_SP_SET: IRON PIPE
 JV1092_STAMPING: 1887
 JV1092_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1092
 JV1092  HISTORY     - Date     Condition        Report By
 JV1092  HISTORY     - UNK      MONUMENTED       WSSC
 JV1092  HISTORY     - 1939     GOOD             WSSC
 JV1092  HISTORY     - 20210619 MARK NOT FOUND   PROFLN
 JV1092
 JV1092                          STATION DESCRIPTION
 JV1092
 JV1092'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1092'2 MI NW FROM HIGHLAND.
 JV1092'ABOUT 2.0 MILES NORTHWEST ALONG THE HIGHLAND-DAYTON ROAD FROM THE
 JV1092'INTERSECTION OF THE ASHTON-CLARKSVILLE ROAD AT HIGHLAND, HOWARD
 JV1092'COUNTY, AT THE INTERSECTION OF THE BRIGHTON-CLARKSVILLE ROAD, ON
 JV1092'CAMP MONTROSE PROPERTY, NEAR A SWIMMING POOL, ABOUT 500 FEET
 JV1092'NORTHEAST OF THE HIGHLAND-DAYTON ROAD, 16 FEET NORTH OF THE
 JV1092'BRIGHTON-CLARKSVILLE ROAD, 8.7 FEET EAST OF A FENCE POST, AND
 JV1092'4.5 FEET WEST OF A 24-INCH WALNUT TREE.  A WASHINGTON SUBURBAN
 JV1092'SANITARY DISTRICT STANDARD DISK, STAMPED 1887 AND SET IN THE TOP
 JV1092'OF A CONCRETE-FILLED IRON PIPE.
 JV1092
 JV1092                          STATION RECOVERY (2021)
 JV1092
 JV1092'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV1092'THE INTERSECTION IS NOW HIGHLAND ROAD AND BRIGHTON DAM ROAD.  NO
 JV1092'EVIDENCE OF THE MARK WAS FOUND.  NONE OF TIES REFERRED TO IN 1939 WERE
 JV1092'FOUND TODAY - SWIMMING POOL, FENCE OR WALNUT TREE.  THE DISTANCE NORTH
 JV1092'OF BRIGHTON DAM ROAD PUTS THE MARK IN THE GRASS SHOULDER WHERE ROAD
 JV1092'GRADING LIKELY DESTROYED THE MARK.  THERE IS NOTHING TO INDICATE CAMP
 JV1092'MONTROSE PROPERTY TODAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2660 ***********************************************************************
 JV2660  DESIGNATION -  1889 WSSC
 JV2660  PID         -  JV2660
 JV2660  STATE/COUNTY-  MD/MONTGOMERY
 JV2660  COUNTRY     -  US
 JV2660  USGS QUAD   -  GAITHERSBURG (2016)
 JV2660
 JV2660                         *CURRENT SURVEY CONTROL
 JV2660  ______________________________________________________________________
 JV2660* NAD 83(1986) POSITION- 39 12 23.     (N) 077 08 27.     (W)   SCALED
 JV2660* NAVD 88 ORTHO HEIGHT -   183.15  (+/-2cm)      600.9   (feet) VERTCON3
 JV2660  ______________________________________________________________________
 JV2660  GEOID HEIGHT    -        -31.765 (meters)                     GEOID18
 JV2660  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2660
 JV2660.The horizontal coordinates were scaled from a map and have
 JV2660.an estimated accuracy of +/- 6 seconds.
 JV2660
 JV2660.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2660.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2660
 JV2660.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2660.GEOID18 height accuracy estimate available here.
 JV2660
 JV2660.The vertical order pertains to the NGVD 29 superseded value.
 JV2660
 JV2660.Click photographs - Photos may exist for this station.
 JV2660
 JV2660;                    North         East    Units  Estimated Accuracy
 JV2660;SPC MD       -   170,930.      387,840.      MT  (+/- 180 meters Scaled)
 JV2660
 JV2660_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ151418(NAD 83)
 JV2660
 JV2660                          SUPERSEDED SURVEY CONTROL
 JV2660
 JV2660  NGVD 29 (11/26/84)  183.349  (m)          601.54   (f) ADJUSTED    2 0
 JV2660
 JV2660.Superseded values are not recommended for survey control.
 JV2660
 JV2660.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2660.See file dsdata.pdf to determine how the superseded data were derived.
 JV2660
 JV2660_MARKER: DD = SURVEY DISK
 JV2660_SETTING: 0 = UNSPECIFIED SETTING
 JV2660_STAMPING: 1889
 JV2660_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2660
 JV2660  HISTORY     - Date     Condition        Report By
 JV2660  HISTORY     - UNK      MONUMENTED       WSSC
 JV2660  HISTORY     - 1944     GOOD             WSSC
 JV2660
 JV2660                          STATION DESCRIPTION
 JV2660
 JV2660'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2660'0.5 MI S FROM LAYONSVILLE.
 JV2660'ON STATE HIGHWAY 108, AT THE Y-JUNCTION OF THE GAITHERSBURG
 JV2660'ROAD, AT THE NORTH END OF THE TRIANGLE, AND IN FRONT OF A GARAGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1086 ***********************************************************************
 JV1086  DESIGNATION -  1890 WSSC
 JV1086  PID         -  JV1086
 JV1086  STATE/COUNTY-  MD/HOWARD
 JV1086  COUNTRY     -  US
 JV1086  USGS QUAD   -  CLARKSVILLE (2016)
 JV1086
 JV1086                         *CURRENT SURVEY CONTROL
 JV1086  ______________________________________________________________________
 JV1086* NAD 83(1986) POSITION- 39 09 58.     (N) 076 56 35.     (W)   SCALED
 JV1086* NAVD 88 ORTHO HEIGHT -   156.58  (+/-2cm)      513.7   (feet) VERTCON3
 JV1086  ______________________________________________________________________
 JV1086  GEOID HEIGHT    -        -32.034 (meters)                     GEOID18
 JV1086  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1086
 JV1086.The horizontal coordinates were scaled from a map and have
 JV1086.an estimated accuracy of +/- 6 seconds.
 JV1086
 JV1086.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1086.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1086
 JV1086.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1086.GEOID18 height accuracy estimate available here.
 JV1086
 JV1086.The vertical order pertains to the NGVD 29 superseded value.
 JV1086
 JV1086.Click photographs - Photos may exist for this station.
 JV1086
 JV1086;                    North         East    Units  Estimated Accuracy
 JV1086;SPC MD       -   166,450.      404,920.      MT  (+/- 180 meters Scaled)
 JV1086
 JV1086_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ321370(NAD 83)
 JV1086
 JV1086                          SUPERSEDED SURVEY CONTROL
 JV1086
 JV1086  NGVD 29 (11/26/84)  156.796  (m)          514.42   (f) ADJUSTED    2 0
 JV1086
 JV1086.Superseded values are not recommended for survey control.
 JV1086
 JV1086.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1086.See file dsdata.pdf to determine how the superseded data were derived.
 JV1086
 JV1086_MARKER: DD = SURVEY DISK
 JV1086_SP_SET: IRON PIPE
 JV1086_STAMPING: 1890
 JV1086_MARK LOGO: WSSC
 JV1086_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1086
 JV1086  HISTORY     - Date     Condition        Report By
 JV1086  HISTORY     - UNK      MONUMENTED       WSSC
 JV1086  HISTORY     - 1939     GOOD             WSSC
 JV1086  HISTORY     - 20210619 GOOD             PROFLN
 JV1086
 JV1086                          STATION DESCRIPTION
 JV1086
 JV1086'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1086'1.3 MI SE FROM HIGHLAND.
 JV1086'ABOUT 1.3 MILES SOUTHEAST ALONG THE LAUREL-HIGHLAND ROAD FROM
 JV1086'HIGHLAND, HOWARD COUNTY, NEAR THE INTERSECTION OF THE
 JV1086'CLARKSVILLE-EDNOR ROAD, ABOUT 22.0 FEET SOUTHWEST OF THE
 JV1086'LAUREL-HIGHLAND ROAD, ABOUT 200 FEET SOUTHEAST OF THE
 JV1086'CLARKSVILLE-EDNOR ROAD, IN THE NORTHEAST CORNER OF MT. ZION
 JV1086'CEMETERY, 51.7 FEET SOUTH OF A 24-INCH OAK TREE, 28.4 FEET
 JV1086'NORTHWEST OF ANOTHER 24-INCH OAK TREE, AND 6.2 FEET SOUTHWEST OF
 JV1086'A HEDGE.  A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK,
 JV1086'STAMPED 1890 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1086
 JV1086                          STATION RECOVERY (2021)
 JV1086
 JV1086'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV1086'THE MARK WAS RECOVERED WITH THE ASSISTANCE OF MARK BLOUGH AND TWO
 JV1086'OTHER MEMBERS OF THE MOUNT ZION UNITED METHODIST CHURCH.
 JV1086'
 JV1086'THE MARK IS ON THE NORTHEAST SIDE OF THE MOUNT ZION CEMETERY, AT THE
 JV1086'NORTHWEST END OF A TREE AND HEDGE ROW.  IT IS 246 FT (75.0 M)
 JV1086'SOUTHEAST OF A NW FENCE CORNER POST BY AN ENTRANCE WITH STONE GATE
 JV1086'POSTS, 41 FT (12.5 M) SOUTHWEST OF STATE RIGHT 216 WHICH IS ALSO
 JV1086'POSSIBLY CALLED SCAGGSVILLE ROAD HERE (THE DIMENSION THAT WAS 22.0 FT
 JV1086'(6.7 M) IN THE ORIGINAL DESCRIPTION), 7.5 FT (2.3 M) SOUTHWEST OF A
 JV1086'WSSC WITNESS POST, 6.5 FT (2.0 M) NORTHWEST OF THE NORTHWEST CORNER OF
 JV1086'THE MCGEE HEADSTONE, 4.5 FT (1.4 M) SOUTHWEST OF A NATIONAL GEODETIC
 JV1086'SURVEY WITNESS SIGN, 3 INCHES (8 CM) BELOW GROUND, UNDER A 6 INCH (15
 JV1086'CM) ROUND VALVE BOX PLACED THIS DATE, LID FLUSH WITH THE GROUND.
 JV1086'
 JV1086'THE MARK IS NOT BETWEEN THE WITNESS POSTS BUT OUTSIDE OR SOUTHWEST OF
 JV1086'BOTH OF THEM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2567 ***********************************************************************
 JV2567  DESIGNATION -  1892 WSSC
 JV2567  PID         -  JV2567
 JV2567  STATE/COUNTY-  MD/HOWARD
 JV2567  COUNTRY     -  US
 JV2567  USGS QUAD   -  WOODBINE (2016)
 JV2567
 JV2567                         *CURRENT SURVEY CONTROL
 JV2567  ______________________________________________________________________
 JV2567* NAD 83(1986) POSITION- 39 15 19.     (N) 077 00 52.     (W)   SCALED
 JV2567* NAVD 88 ORTHO HEIGHT -   169.31  (+/-2cm)      555.5   (feet) VERTCON3
 JV2567  ______________________________________________________________________
 JV2567  GEOID HEIGHT    -        -31.886 (meters)                     GEOID18
 JV2567  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2567
 JV2567.The horizontal coordinates were scaled from a map and have
 JV2567.an estimated accuracy of +/- 6 seconds.
 JV2567
 JV2567.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2567.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2567
 JV2567.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2567.GEOID18 height accuracy estimate available here.
 JV2567
 JV2567.The vertical order pertains to the NGVD 29 superseded value.
 JV2567
 JV2567.Click photographs - Photos may exist for this station.
 JV2567
 JV2567;                    North         East    Units  Estimated Accuracy
 JV2567;SPC MD       -   176,350.      398,750.      MT  (+/- 180 meters Scaled)
 JV2567
 JV2567_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ261470(NAD 83)
 JV2567
 JV2567                          SUPERSEDED SURVEY CONTROL
 JV2567
 JV2567  NGVD 29 (11/26/84)  169.522  (m)          556.17   (f) ADJUSTED    2 0
 JV2567
 JV2567.Superseded values are not recommended for survey control.
 JV2567
 JV2567.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2567.See file dsdata.pdf to determine how the superseded data were derived.
 JV2567
 JV2567_MARKER: DD = SURVEY DISK
 JV2567_SP_SET: IRON PIPE
 JV2567_STAMPING: 1892
 JV2567_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2567
 JV2567  HISTORY     - Date     Condition        Report By
 JV2567  HISTORY     - UNK      MONUMENTED       WSSC
 JV2567  HISTORY     - 1946     GOOD             WSSC
 JV2567  HISTORY     - 20210619 MARK NOT FOUND   PROFLN
 JV2567
 JV2567                          STATION DESCRIPTION
 JV2567
 JV2567'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2567'0.4 MI S FROM GARY.
 JV2567'ABOUT 0.4 MILE SOUTH ALONG THE GARY-TRIADELPHIA ROAD FROM GARY,
 JV2567'HOWARD COUNTY, ABOUT 200 FEET SOUTH OF THE JUNCTION OF A ROAD
 JV2567'LEADING EAST, ON THE SOUTH SIDE OF A LANE LEADING TO A FARMHOUSE,
 JV2567'40.2 FEET SOUTHEAST OF A POLE, 30.5 FEET NORTHWEST OF A 10-INCH
 JV2567'CEDAR TREE, 28.6 FEET NORTHEAST OF ANOTHER 10-INCH CEDAR TREE,
 JV2567'AND 24.8 FEET SOUTH OF AN 8-INCH CEDAR TREE.  A WASHINGTON
 JV2567'SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED 1892 AND SET
 JV2567'IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV2567
 JV2567                          STATION RECOVERY (2021)
 JV2567
 JV2567'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV2567'THE GENERAL AREA IS THE INTERSECTION OF HOWARD ROAD WITH TRIADELPHIA
 JV2567'ROAD.  THE INTERSECTION IS CONSIDERABLY REVISED FROM THE SITUATION
 JV2567'SHOWN ON THE WSSC BENCH MARK RECORD.  IT WAS IMPOSSIBLE TO DETERMINE
 JV2567'TODAY WHERE THE MARK MIGHT BE WITH THE CURRENT ROAD ALIGNMENTS.  THE
 JV2567'CURRENT CEDAR TREES ARE TOO SMALL TO BE THE ONES PRESENT IN 1939 AND
 JV2567'NOT IN THE SAME LOCATIONS PER THE WSSC SKETCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2676 ***********************************************************************
 JV2676  DESIGNATION -  1896
 JV2676  PID         -  JV2676
 JV2676  STATE/COUNTY-  MD/MONTGOMERY
 JV2676  COUNTRY     -  US
 JV2676  USGS QUAD   -  CLARKSVILLE (2016)
 JV2676
 JV2676                         *CURRENT SURVEY CONTROL
 JV2676  ______________________________________________________________________
 JV2676* NAD 83(1986) POSITION- 39 09 21.     (N) 076 59 57.     (W)   SCALED
 JV2676* NAVD 88 ORTHO HEIGHT -   135.27  (+/-2cm)      443.8   (feet) VERTCON3
 JV2676  ______________________________________________________________________
 JV2676  GEOID HEIGHT    -        -31.941 (meters)                     GEOID18
 JV2676  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2676
 JV2676.The horizontal coordinates were scaled from a map and have
 JV2676.an estimated accuracy of +/- 6 seconds.
 JV2676
 JV2676.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2676.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2676
 JV2676.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2676.GEOID18 height accuracy estimate available here.
 JV2676
 JV2676.The vertical order pertains to the NGVD 29 superseded value.
 JV2676
 JV2676.Click photographs - Photos may exist for this station.
 JV2676
 JV2676;                    North         East    Units  Estimated Accuracy
 JV2676;SPC MD       -   165,310.      400,070.      MT  (+/- 180 meters Scaled)
 JV2676
 JV2676_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ272359(NAD 83)
 JV2676
 JV2676                          SUPERSEDED SURVEY CONTROL
 JV2676
 JV2676  NGVD 29 (11/26/84)  135.482  (m)          444.49   (f) ADJUSTED    2 0
 JV2676
 JV2676.Superseded values are not recommended for survey control.
 JV2676
 JV2676.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2676.See file dsdata.pdf to determine how the superseded data were derived.
 JV2676
 JV2676_MARKER: DD = SURVEY DISK
 JV2676_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV2676_STAMPING: 1896
 JV2676_MARK LOGO: WSSC
 JV2676_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2676_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2676_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2676+SATELLITE: SATELLITE OBSERVATIONS - August 28, 2001
 JV2676
 JV2676  HISTORY     - Date     Condition        Report By
 JV2676  HISTORY     - 1944     MONUMENTED       WSSC
 JV2676  HISTORY     - 20010828 GOOD             MDSHA
 JV2676
 JV2676                          STATION DESCRIPTION
 JV2676
 JV2676'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2676'0.8 MI E FROM ASHTON.
 JV2676'ON THE CLARKSVILLE ROAD (US HWY 29), AT THE JUNCTION OF MINK HOLLOW
 JV2676'ROAD, 38.2 FT N OF THE CENTERLINE OF THE HWY, 39.6 FT E OF THE CENTER
 JV2676'LINE OF MINK HOLLOW ROAD, 17.9 FT NW OF A 36 INCH OAK TREE, 13.7 FT S
 JV2676'OF AN 18 INCH OAK TREE, 13 FT N OF A 12 INCH OAK TREE, AND 14.6 FT
 JV2676'NE OF A 30 INCH OAK TREE.
 JV2676
 JV2676                          STATION RECOVERY (2001)
 JV2676
 JV2676'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2676'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2644 ***********************************************************************
 JV2644  DESIGNATION -  1898 WSSC
 JV2644  PID         -  JV2644
 JV2644  STATE/COUNTY-  MD/MONTGOMERY
 JV2644  COUNTRY     -  US
 JV2644  USGS QUAD   -  SANDY SPRING (2016)
 JV2644
 JV2644                         *CURRENT SURVEY CONTROL
 JV2644  ______________________________________________________________________
 JV2644* NAD 83(1986) POSITION- 39 11 57.     (N) 077 01 27.     (W)   SCALED
 JV2644* NAVD 88 ORTHO HEIGHT -   139.44  (+/-2cm)      457.5   (feet) VERTCON3
 JV2644  ______________________________________________________________________
 JV2644  GEOID HEIGHT    -        -31.886 (meters)                     GEOID18
 JV2644  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2644
 JV2644.The horizontal coordinates were scaled from a map and have
 JV2644.an estimated accuracy of +/- 6 seconds.
 JV2644
 JV2644.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2644.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2644
 JV2644.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2644.GEOID18 height accuracy estimate available here.
 JV2644
 JV2644.The vertical order pertains to the NGVD 29 superseded value.
 JV2644
 JV2644.Click photographs - Photos may exist for this station.
 JV2644
 JV2644;                    North         East    Units  Estimated Accuracy
 JV2644;SPC MD       -   170,120.      397,910.      MT  (+/- 180 meters Scaled)
 JV2644
 JV2644_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ252408(NAD 83)
 JV2644
 JV2644                          SUPERSEDED SURVEY CONTROL
 JV2644
 JV2644  NGVD 29 (11/26/84)  139.658  (m)          458.19   (f) ADJUSTED    2 0
 JV2644
 JV2644.Superseded values are not recommended for survey control.
 JV2644
 JV2644.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2644.See file dsdata.pdf to determine how the superseded data were derived.
 JV2644
 JV2644_MARKER: DD = SURVEY DISK
 JV2644_SETTING: 0 = UNSPECIFIED SETTING
 JV2644_SP_SET: IRON PIPE
 JV2644_STAMPING: 1898
 JV2644_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2644
 JV2644  HISTORY     - Date     Condition        Report By
 JV2644  HISTORY     - UNK      MONUMENTED       WSSC
 JV2644  HISTORY     - 1944     GOOD             WSSC
 JV2644
 JV2644                          STATION DESCRIPTION
 JV2644
 JV2644'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2644'0.4 MI N FROM BRIGHTON.
 JV2644'ON THE BRIGHTON-SUNSHINE ROAD, 35 FEET NORTH OF THE JUNCTION
 JV2644'OF THE CLARKSVILLE ROAD, ON THE WEST SIDE OF THE SUNSHINE ROAD,
 JV2644'IN A GROUP OF LOCUST TREES, AND 1 FOOT NORTH OF A FENCE LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2577 ***********************************************************************
 JV2577  DESIGNATION -  1899 WSSC
 JV2577  PID         -  JV2577
 JV2577  STATE/COUNTY-  MD/HOWARD
 JV2577  COUNTRY     -  US
 JV2577  USGS QUAD   -  WOODBINE (2016)
 JV2577
 JV2577                         *CURRENT SURVEY CONTROL
 JV2577  ______________________________________________________________________
 JV2577* NAD 83(1986) POSITION- 39 17 29.     (N) 077 03 30.     (W)   SCALED
 JV2577* NAVD 88 ORTHO HEIGHT -   138.43  (+/-2cm)      454.2   (feet) VERTCON3
 JV2577  ______________________________________________________________________
 JV2577  GEOID HEIGHT    -        -31.846 (meters)                     GEOID18
 JV2577  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2577
 JV2577.The horizontal coordinates were scaled from a map and have
 JV2577.an estimated accuracy of +/- 6 seconds.
 JV2577
 JV2577.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2577.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2577
 JV2577.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2577.GEOID18 height accuracy estimate available here.
 JV2577
 JV2577.The vertical order pertains to the NGVD 29 superseded value.
 JV2577
 JV2577.Click photographs - Photos may exist for this station.
 JV2577
 JV2577;                    North         East    Units  Estimated Accuracy
 JV2577;SPC MD       -   180,360.      394,970.      MT  (+/- 180 meters Scaled)
 JV2577
 JV2577_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ224511(NAD 83)
 JV2577
 JV2577                          SUPERSEDED SURVEY CONTROL
 JV2577
 JV2577  NGVD 29 (11/26/84)  138.643  (m)          454.86   (f) ADJUSTED    2 0
 JV2577
 JV2577.Superseded values are not recommended for survey control.
 JV2577
 JV2577.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2577.See file dsdata.pdf to determine how the superseded data were derived.
 JV2577
 JV2577_MARKER: DD = SURVEY DISK
 JV2577_SETTING: 0 = UNSPECIFIED SETTING
 JV2577_SP_SET: IRON PIPE
 JV2577_STAMPING: 1899
 JV2577_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2577
 JV2577  HISTORY     - Date     Condition        Report By
 JV2577  HISTORY     - UNK      MONUMENTED       WSSC
 JV2577  HISTORY     - 1946     GOOD             WSSC
 JV2577
 JV2577                          STATION DESCRIPTION
 JV2577
 JV2577'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2577'0.6 MI E FROM DAISY.
 JV2577'ABOUT 0.6 MILE EAST ALONG THE OLD ABANDONED GLENWOOD-DAISY ROAD
 JV2577'FROM DAISY, HOWARD COUNTY, ABOUT 700 FEET SOUTH OF A BRIDGE OVER
 JV2577'CATTAIL CREEK, 25 FEET WEST OF THE CENTER LINE OF THE ROAD, 55.4
 JV2577'FEET SOUTHWEST OF A 24-INCH MAPLE TREE, 33.4 FEET SOUTHEAST OF
 JV2577'POLE 143077, 14.3 FEET NORTHWEST OF A 24-INCH OAK TREE, AND 9.7
 JV2577'FEET SOUTH OF AN 8-INCH OAK TREE.  A WASHINGTON SUBURBAN SANITARY
 JV2577'DISTRICT STANDARD DISK, STAMPED 1899 AND SET IN THE TOP OF A
 JV2577'CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0547 ***********************************************************************
 HU0547  DESIGNATION -  19
 HU0547  PID         -  HU0547
 HU0547  STATE/COUNTY-  MD/WICOMICO
 HU0547  COUNTRY     -  US
 HU0547  USGS QUAD   -  EDEN (2016)
 HU0547
 HU0547                         *CURRENT SURVEY CONTROL
 HU0547  ______________________________________________________________________
 HU0547* NAD 83(1986) POSITION- 38 22 18.     (N) 075 44 25.     (W)   SCALED
 HU0547* NAVD 88 ORTHO HEIGHT -     5.842 (meters)       19.17  (feet) ADJUSTED
 HU0547  ______________________________________________________________________
 HU0547  GEOID HEIGHT    -        -35.706 (meters)                     GEOID18
 HU0547  DYNAMIC HEIGHT  -          5.838 (meters)       19.15  (feet) COMP
 HU0547  MODELED GRAVITY -    980,007.0   (mgal)                       NAVD 88
 HU0547
 HU0547  VERT ORDER      -  FIRST     CLASS I
 HU0547
 HU0547.The horizontal coordinates were scaled from a map and have
 HU0547.an estimated accuracy of +/- 6 seconds.
 HU0547
 HU0547.The orthometric height was determined by differential leveling and
 HU0547.adjusted by the NATIONAL GEODETIC SURVEY
 HU0547.in June 1991.
 HU0547
 HU0547.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0547.GEOID18 height accuracy estimate available here.
 HU0547
 HU0547.Click photographs - Photos may exist for this station.
 HU0547
 HU0547.The dynamic height is computed by dividing the NAVD 88
 HU0547.geopotential number by the normal gravity value computed on the
 HU0547.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0547.degrees latitude (g = 980.6199 gals.).
 HU0547
 HU0547.The modeled gravity was interpolated from observed gravity values.
 HU0547
 HU0547;                    North         East    Units  Estimated Accuracy
 HU0547;SPC MD       -    79,020.      510,080.      MT  (+/- 180 meters Scaled)
 HU0547
 HU0547_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH353473(NAD 83)
 HU0547
 HU0547                          SUPERSEDED SURVEY CONTROL
 HU0547
 HU0547  NGVD 29 (11/26/84)    6.095  (m)           20.00   (f) ADJUSTED    1 1
 HU0547
 HU0547.Superseded values are not recommended for survey control.
 HU0547
 HU0547.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0547.See file dsdata.pdf to determine how the superseded data were derived.
 HU0547
 HU0547_MARKER: DD = SURVEY DISK
 HU0547_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HU0547_STAMPING: 19 BALTO
 HU0547_MARK LOGO: USGS
 HU0547_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0547_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0547+SATELLITE: SATELLITE OBSERVATIONS - March 06, 1990
 HU0547
 HU0547  HISTORY     - Date     Condition        Report By
 HU0547  HISTORY     - 1900     MONUMENTED       USGS
 HU0547  HISTORY     - 1963     GOOD             CGS
 HU0547  HISTORY     - 1968     GOOD             CGS
 HU0547  HISTORY     - 19900306 POOR             NGS
 HU0547  HISTORY     - 20050907 MARK NOT FOUND   GEOCAC
 HU0547
 HU0547                          STATION DESCRIPTION
 HU0547
 HU0547'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0547'AT QUANTICO.
 HU0547'AT QUANTICO, ALONG STATE HIGHWAY 347, AT THE ST. PHILLIPS
 HU0547'EPISCOPAL CHURCH, 55.8 FEET NORTHWEST OF NORTHWEST CORNER OF THE
 HU0547'CHURCH, 3 FEET SOUTH OF SOUTHWEST CORNER OF THE BOUNDS
 HU0547'TOMBSTONE, 18.5 FEET EAST OF CENTER LINE OF HIGHWAY, 4 FEET ABOVE
 HU0547'LEVEL OF HIGHWAY, AND IS DISK ON TOP OF A IRON POST PROJECTING
 HU0547'2 INCHES.
 HU0547
 HU0547                          STATION RECOVERY (1968)
 HU0547
 HU0547'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968
 HU0547'RECOVERED IN GOOD CONDITION.
 HU0547
 HU0547                          STATION RECOVERY (1990)
 HU0547
 HU0547'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0547'IN QUANTICO, AT THE ST. PHILLIPS EPISCOPAL CHURCH, 17.0 M (55.77 FT)
 HU0547'NORTHWEST OF THE NORTHWEST CORNER OF THE CHURCH, 5.6 M (18.37 FT)
 HU0547'EAST OF THE CENTER OF STATE HIGHWAY 347 (QUANTIC0 ROAD), 1.2 M (3.94
 HU0547'FT) ABOVE THE LEVEL OF THE ROAD, 0.9 M (2.95 FT) SOUTH OF THE BOUNDS
 HU0547'HEADSTONE, AND IS A DISK RIVETED TO A 3 1/2-INCH IRON PIPE THAT
 HU0547'PROJECTS 0.1 M (0.33 FT) ABOVE THE GROUND SURFACE.  NOTE--THE MARK
 HU0547'HAS BEEN HIT AND IS LEANING TO THE NORTH AT A 40 DEGREE ANGLE.
 HU0547
 HU0547                          STATION RECOVERY (2005)
 HU0547
 HU0547'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0547'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4901 ***********************************************************************
 JV4901  DESIGNATION -  19
 JV4901  PID         -  JV4901
 JV4901  STATE/COUNTY-  MD/KENT
 JV4901  COUNTRY     -  US
 JV4901  USGS QUAD   -  HANESVILLE (2016)
 JV4901
 JV4901                         *CURRENT SURVEY CONTROL
 JV4901  ______________________________________________________________________
 JV4901* NAD 83(1991) POSITION- 39 16 46.32940(N) 076 11 59.39207(W)   ADJUSTED
 JV4901* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV4901  ______________________________________________________________________
 JV4901  GEOID HEIGHT    -        -33.254 (meters)                     GEOID18
 JV4901  LAPLACE CORR    -         -1.60  (seconds)                    DEFLEC18
 JV4901  HORZ ORDER      -  THIRD
 JV4901
 JV4901.The horizontal coordinates were established by classical geodetic methods
 JV4901.and adjusted by the National Geodetic Survey in January 1992.
 JV4901
 JV4901.The orthometric height was scaled from a topographic map.
 JV4901
 JV4901.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4901.GEOID18 height accuracy estimate available here.
 JV4901
 JV4901.Click photographs - Photos may exist for this station.
 JV4901
 JV4901.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4901
 JV4901. The following values were computed from the NAD 83(1991) position.
 JV4901
 JV4901;                    North         East     Units Scale Factor Converg.
 JV4901;SPC MD       -   179,341.152   469,039.546   MT  0.99997462   +0 30 08.0
 JV4901;SPC MD       -   588,388.43  1,538,840.58   sFT  0.99997462   +0 30 08.0
 JV4901;UTM  18      - 4,348,483.796   396,513.046   MT  0.99973186   -0 45 34.9
 JV4901
 JV4901!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4901!SPC MD       -   1.00000400  x   0.99997462  =   0.99997862
 JV4901!UTM  18      -   1.00000400  x   0.99973186  =   0.99973586
 JV4901
 JV4901:                Primary Azimuth Mark                     Grid Az
 JV4901:SPC MD       -  ANDELOT                                  015 18 47.7
 JV4901:UTM  18      -  ANDELOT                                  016 34 30.6
 JV4901
 JV4901_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9651348483(NAD 83)
 JV4901
 JV4901|---------------------------------------------------------------------|
 JV4901| PID    Reference Object                     Distance      Geod. Az  |
 JV4901|                                                           dddmmss.s |
 JV4901| JV4914 ANDELOT                             APPROX. 4.5 KM 0154855.7 |
 JV4901| JV4902 STOOPS POINT TOWER 9                  4.543 METERS 11741     |
 JV4901| JV5347 POOLES ISLAND LIGHTHOUSE            APPROX. 5.9 KM 2815911.9 |
 JV4901| JV4920 SHAD BATTERY CHAN REAR RNG LT       APPROX. 5.1 KM 3323920.3 |
 JV4901| JV4917 UPPER CHESAPEAKE CHAN F RNG LT      APPROX. 5.4 KM 3464524.4 |
 JV4901| JV4916 UPPER CHESAPEAKE CHAN R RNG LT      APPROX. 6.5 KM 3515034.5 |
 JV4901|---------------------------------------------------------------------|
 JV4901
 JV4901                          SUPERSEDED SURVEY CONTROL
 JV4901
 JV4901  NAD 83(1986)-  39 16 46.32281(N)    076 11 59.40028(W) AD(       ) 3
 JV4901  NAD 27      -  39 16 45.92800(N)    076 12 00.57100(W) AD(       ) 3
 JV4901
 JV4901.Superseded values are not recommended for survey control.
 JV4901
 JV4901.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4901.See file dsdata.pdf to determine how the superseded data were derived.
 JV4901
 JV4901_MARKER: DD = SURVEY DISK
 JV4901_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4901_STAMPING: 19
 JV4901_MARK LOGO: USACE
 JV4901_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4901+STABILITY: SURFACE MOTION
 JV4901
 JV4901  HISTORY     - Date     Condition        Report By
 JV4901  HISTORY     - 1937     MONUMENTED       USACE
 JV4901  HISTORY     - 1939     GOOD             CGS
 JV4901  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV4901
 JV4901                          STATION DESCRIPTION
 JV4901
 JV4901'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4901'STATION MARK RECOVERED IN GOOD CONDITION.
 JV4901'
 JV4901'STATION IS ON THE E SIDE OF CHESAPEAKE BAY ABOUT 1 MILE SW OF
 JV4901'THE ENTRANCE TO WORTON CREEK, ABOUT 1/2 MILE N OF THE ENTRANCE
 JV4901'TO FAIRLEE CREEK, AND IN AN OPEN FIELD 60 METERS E OF A 40-FOOT
 JV4901'BLUFF ALONG THE SHORE OF THE BAY AND ABOUT 250 METERS S OF THE
 JV4901'EDGE OF THE BLUFF TO THE N.  IT IS 4.54 METERS W OF CENTER OF A
 JV4901'30-FOOT ARMY OBSERVATION TOWER (STOOPS POINT TOWER 9).
 JV4901'
 JV4901'STATION MARK IS A STANDARD U.S.E. DISK ATOP A 6-INCH SQUARE
 JV4901'CONCRETE POST PROJECTING 4 INCHES ABOVE THE SURFACE OF THE GROUND.
 JV4901'
 JV4901'TO REACH THE STATION FROM MELITOTA, MARYLAND, FOLLOW THE MAIN
 JV4901'ROAD TO HANDYS POINT W OUT OF MELITOTA, FOR 2.5 MILES.  TURN LEFT
 JV4901'ONTO PRIVATE LANE FOR 0.6 MILE.  TURN RIGHT AND FOLLOW LANE TO
 JV4901'LARGE, BRICK HOUSE.  STATION IS ABOUT 0.2 MILE NW OF THE HOUSE
 JV4901'ALONG THE W SIDE OF THE FIELD.
 JV4901
 JV4901                          STATION RECOVERY (1961)
 JV4901
 JV4901'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV4901'MEASUREMENTS FROM STOOPS POINT TOWER NO.9, 1918 PLACES THIS
 JV4901'STATION UNDER AN ASPHALT ROADWAY BESIDE THE TOWER.  STATION WAS
 JV4901'PROBABLY DESTROYED AS IT ORIGINALLY PROJECTED 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7023 ***********************************************************************
 JV7023  DESIGNATION -  19 38 002
 JV7023  PID         -  JV7023
 JV7023  STATE/COUNTY-  MD/HOWARD
 JV7023  COUNTRY     -  US
 JV7023  USGS QUAD   -  CLARKSVILLE (2016)
 JV7023
 JV7023                         *CURRENT SURVEY CONTROL
 JV7023  ______________________________________________________________________
 JV7023* NAD 83(2011) POSITION- 39 08 11.44883(N) 076 54 45.58281(W)   ADJUSTED
 JV7023* NAD 83(2011) ELLIP HT-    88.470 (meters)        (06/27/12)   ADJUSTED
 JV7023* NAD 83(2011) EPOCH   -  2010.00
 JV7023* NAVD 88 ORTHO HEIGHT -   120.6   (meters)      396.    (feet) GPS OBS
 JV7023  ______________________________________________________________________
 JV7023  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7023  GEOID HEIGHT    -        -32.079 (meters)                     GEOID99
 JV7023  GEOID HEIGHT    -        -32.100 (meters)                     GEOID18
 JV7023  NAD 83(2011) X  -  1,121,729.014 (meters)                     COMP
 JV7023  NAD 83(2011) Y  - -4,825,173.402 (meters)                     COMP
 JV7023  NAD 83(2011) Z  -  4,004,139.367 (meters)                     COMP
 JV7023  LAPLACE CORR    -         -3.51  (seconds)                    DEFLEC18
 JV7023
 JV7023  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7023  Standards:
 JV7023         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7023            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7023  -------------------------------------------------------------------
 JV7023  NETWORK    1.07   1.39           0.47   0.40   0.71      0.02282666
 JV7023  -------------------------------------------------------------------
 JV7023  Click here for local accuracies and other accuracy information.
 JV7023
 JV7023.The horizontal coordinates were established by GPS observations
 JV7023.and adjusted by the National Geodetic Survey in June 2012.
 JV7023
 JV7023.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7023.been affixed to the stable North American tectonic plate. See 
 JV7023.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7023
 JV7023.The horizontal coordinates are valid at the epoch date displayed above
 JV7023.which is a decimal equivalence of Year/Month/Day.
 JV7023
 JV7023.The orthometric height was determined by GPS observations and a
 JV7023.high-resolution geoid model.
 JV7023
 JV7023.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7023.GEOID18 height accuracy estimate available here.
 JV7023
 JV7023.Click photographs - Photos may exist for this station.
 JV7023
 JV7023.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7023
 JV7023.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7023
 JV7023.The ellipsoidal height was determined by GPS observations
 JV7023.and is referenced to NAD 83.
 JV7023
 JV7023. The following values were computed from the NAD 83(2011) position.
 JV7023
 JV7023;                    North         East     Units Scale Factor Converg.
 JV7023;SPC MD       -   163,164.446   407,550.925   MT  0.99996017   +0 03 17.3
 JV7023;SPC MD       -   535,315.35  1,337,106.66   sFT  0.99996017   +0 03 17.3
 JV7023;UTM  18      - 4,333,667.690   334,691.667   MT  0.99993649   -1 12 27.0
 JV7023
 JV7023!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7023!SPC MD       -   0.99998612  x   0.99996017  =   0.99994629
 JV7023!UTM  18      -   0.99998612  x   0.99993649  =   0.99992261
 JV7023
 JV7023_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3469133667(NAD 83)
 JV7023
 JV7023                          SUPERSEDED SURVEY CONTROL
 JV7023
 JV7023  NAD 83(2007)-  39 08 11.44895(N)    076 54 45.58373(W) AD(2002.00) 0
 JV7023  ELLIP H (02/10/07)   88.491  (m)                       GP(2002.00)    
 JV7023  ELLIP H (08/30/02)   88.471  (m)                       GP(       ) 4 2
 JV7023  NAD 83(1991)-  39 08 11.44931(N)    076 54 45.58306(W) AD(       ) 1
 JV7023  ELLIP H (02/23/93)   88.405  (m)                       GP(       ) 4 2
 JV7023  NGVD 29 (02/23/93)  120.8    (m)  GEOID90  model used  GPS OBS        
 JV7023
 JV7023.Superseded values are not recommended for survey control.
 JV7023
 JV7023.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7023.See file dsdata.pdf to determine how the superseded data were derived.
 JV7023
 JV7023_MARKER: DD = SURVEY DISK
 JV7023_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7023_STAMPING: 1938002 1974
 JV7023_MARK LOGO: MD-027
 JV7023_PROJECTION: FLUSH
 JV7023_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7023_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7023+STABILITY: SURFACE MOTION
 JV7023_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7023+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7023
 JV7023  HISTORY     - Date     Condition        Report By
 JV7023  HISTORY     - 1974     MONUMENTED       MD-027
 JV7023  HISTORY     - 19901125 GOOD             MD-027
 JV7023  HISTORY     - 19910115 GOOD
 JV7023  HISTORY     - 20000915 GOOD             MD-027
 JV7023
 JV7023                          STATION DESCRIPTION
 JV7023
 JV7023'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7023'THE STATION IS LOCATED ABOUT 6.9 KM (4.30 MI) NORTHWEST OF LAUREL AND
 JV7023'6.6 KM (4.10 MI) SOUTHWEST OF SIMPSONVILLE. OWNERSHIP U.S. HIGHWAY
 JV7023'RIGHT-OF-WAY.
 JV7023'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 216 AND
 JV7023'U.S. HIGHWAY 29 LOCATED IN SCAGSVILLE, GO SOUTH 1.4 KM (0.85 MI) ON
 JV7023'U.S. HIGHWAY 29 TO THE STATION ON THE RIGHT. 0.2 MI (0.3 KM) SOUTH OF
 JV7023'OLD COLUMBIA ROAD.
 JV7023'THE STATION LIES 274.5 M (900.6 FT) SOUTH OF CENTERLINE OF OLD
 JV7023'COLUMBIA ROAD, 9.8 M (32.2 FT) SOUTH FROM THE CENTERLINE OF
 JV7023'SOUTHBOUND U.S.29, 2.6 M (8.5 FT) EAST FROM A CROSS CUT IN THE END OF
 JV7023'THE GUARD RAIL AND 0.3 M (1.0 FT) EAST FROM A HOWARD COUNTY WITNESS
 JV7023'POST.
 JV7023'THE STATION IS A STANDARD HOWARD COUNTY SURVEY DISC, SET ON TOP OF A
 JV7023'20 CM ROUND CONCRETE MONUMENT, 6 CM RECESSED GFROM THE GROUND. IT IS
 JV7023'STAMPED 1938002 1974.
 JV7023'COMMENT--NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV7023'INCLUDED IN THIS GPS SURVEY PROJECT.
 JV7023
 JV7023                          STATION RECOVERY (1991)
 JV7023
 JV7023'RECOVERED 1991
 JV7023'RECOVERED IN GOOD CONDITION.
 JV7023
 JV7023                          STATION RECOVERY (2000)
 JV7023
 JV7023'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7023'RECOVERY BY HOWARD COUNTY 2000 FOUND AS DESCRIBED IN GOOD
 JV7023'CONDITION
 JV7023'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0236 ***********************************************************************
 HV0236  TIDAL BM    -  This is a Tidal Bench Mark.
 HV0236  DESIGNATION -  19 BALTO
 HV0236  PID         -  HV0236
 HV0236  STATE/COUNTY-  MD/DORCHESTER
 HV0236  COUNTRY     -  US
 HV0236  USGS QUAD   -  CAMBRIDGE (2016)
 HV0236
 HV0236                         *CURRENT SURVEY CONTROL
 HV0236  ______________________________________________________________________
 HV0236* NAD 83(1986) POSITION- 38 34 19.36   (N) 076 04 33.86   (W)   HD_HELD1
 HV0236* NAVD 88 ORTHO HEIGHT -     5.768 (meters)       18.92  (feet) ADJUSTED
 HV0236  ______________________________________________________________________
 HV0236  GEOID HEIGHT    -        -35.030 (meters)                     GEOID18
 HV0236  DYNAMIC HEIGHT  -          5.764 (meters)       18.91  (feet) COMP
 HV0236  MODELED GRAVITY -    980,017.8   (mgal)                       NAVD 88
 HV0236
 HV0236  VERT ORDER      -  FIRST     CLASS II
 HV0236
 HV0236.The horizontal coordinates were determined by differentially corrected
 HV0236.hand held GPS observations or other comparable positioning techniques
 HV0236.and have an estimated accuracy of +/- 3 meters.
 HV0236
 HV0236.The orthometric height was determined by differential leveling and
 HV0236.adjusted by the NATIONAL GEODETIC SURVEY
 HV0236.in June 1991.
 HV0236
 HV0236.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0236.GEOID18 height accuracy estimate available here.
 HV0236
 HV0236.This Tidal Bench Mark is designated as VM 417
 HV0236.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0236
 HV0236.This Tidal Bench Mark is designated as VM 13435
 HV0236.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0236
 HV0236.Click photographs - Photos may exist for this station.
 HV0236
 HV0236.The dynamic height is computed by dividing the NAVD 88
 HV0236.geopotential number by the normal gravity value computed on the
 HV0236.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0236.degrees latitude (g = 980.6199 gals.).
 HV0236
 HV0236.The modeled gravity was interpolated from observed gravity values.
 HV0236
 HV0236;                    North         East    Units  Estimated Accuracy
 HV0236;SPC MD       -   100,907.9     480,512.1     MT  (+/- 3 meters HH1 GPS) 
 HV0236
 HV0236_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0626169836(NAD 83)
 HV0236
 HV0236                          SUPERSEDED SURVEY CONTROL
 HV0236
 HV0236  NGVD 29 (11/26/84)    6.000  (m)           19.68   (f) ADJUSTED    1 2
 HV0236
 HV0236.Superseded values are not recommended for survey control.
 HV0236
 HV0236.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0236.See file dsdata.pdf to determine how the superseded data were derived.
 HV0236
 HV0236_MARKER: DB = BENCH MARK DISK
 HV0236_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0236_SP_SET: BUILDING FOUNDATION
 HV0236_STAMPING: BALTO MARYLAND
 HV0236_MARK LOGO: USGS
 HV0236_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV0236_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0236_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0236+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2015
 HV0236
 HV0236  HISTORY     - Date     Condition        Report By
 HV0236  HISTORY     - 1900     MONUMENTED       USGS
 HV0236  HISTORY     - 1971     GOOD             NGS
 HV0236  HISTORY     - 19950419 GOOD             NOS
 HV0236  HISTORY     - 20010207 GOOD             USPSQD
 HV0236  HISTORY     - 20050704 GOOD             USPSQD
 HV0236  HISTORY     - 20060916 GOOD             USPSQD
 HV0236  HISTORY     - 20070913 GOOD             GEOCAC
 HV0236  HISTORY     - 20090218 GOOD             CO-OPS
 HV0236  HISTORY     - 20090323 GOOD             GEOCAC
 HV0236  HISTORY     - 20120715 GOOD             GEOCAC
 HV0236  HISTORY     - 20150728 GOOD             RODCON
 HV0236
 HV0236                          STATION DESCRIPTION
 HV0236
 HV0236'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0236'AT CAMBRIDGE.
 HV0236'AT CAMBRIDGE, AT THE INTERSECTION OF HIGH STREET AND SPRING STREET,
 HV0236'SET VERTICALLY IN THE NORTHWEST FACE AND 0.7 FOOT NORTHEAST OF
 HV0236'THE WEST CORNER OF THE GRANITE FOUNDATION FOR THE DORCHESTER
 HV0236'COUNTY COURTHOUSE, 116 FEET NORTHEAST OF THE CENTER LINE OF
 HV0236'SPRING STREET, 95 FEET SOUTHEAST OF THE CENTER LINE OF HIGH
 HV0236'STREET, 1 FOOT ABOVE THE LEVEL OF A WALKWAY, AND ABOUT 3 FEET
 HV0236'ABOVE THE LEVEL OF HIGH STREET.
 HV0236
 HV0236                          STATION RECOVERY (1995)
 HV0236
 HV0236'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1995 (JRS)
 HV0236'THE BENCH MARK IS SET VERTICALLY IN THE NW FACE OF THE DORCHESTER
 HV0236'COUNTY COURTHOUSE LOCATED AT THE INTERSECTION OF HIGH AND SPRING
 HV0236'STREETS, 35.4 M (116.1 FT) NE OF THE CENTER LINE OF SPRING STREET,
 HV0236'29.0 M (95.1 FT) SE OF THE CENTER LINE OF HIGH STREET, 0.3 M (1.0 FT)
 HV0236'ABOVE THE LEVEL OF A WALKWAY, AND 0.2 M (0.7 FT) NE OF THE WEST CORNER
 HV0236'OF THE BUILDING.
 HV0236
 HV0236                          STATION RECOVERY (2001)
 HV0236
 HV0236'RECOVERY NOTE BY US POWER SQUADRON 2001 (ELW)
 HV0236'RECOVERED IN GOOD CONDITION.
 HV0236
 HV0236                          STATION RECOVERY (2005)
 HV0236
 HV0236'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 HV0236'SPRING STREET IS NOW NAMED COURT LANE.
 HV0236'THE ADDRESS IS 206 HIGH STREET AND THE BUILDING IS NAMED THE
 HV0236'DORCHESTER COUNTY CIRCUIT COURTHOUSE. IT IS A TAN PAINTED BRICK
 HV0236'BUILDINGS.
 HV0236
 HV0236                          STATION RECOVERY (2006)
 HV0236
 HV0236'RECOVERY NOTE BY US POWER SQUADRON 2006 (NLH)
 HV0236'RECOVERED IN GOOD CONDITION.
 HV0236
 HV0236                          STATION RECOVERY (2007)
 HV0236
 HV0236'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 HV0236'RECOVERED IN GOOD CONDITION.
 HV0236
 HV0236                          STATION RECOVERY (2009)
 HV0236
 HV0236'RECOVERY NOTE BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 HV0236'RECOVERED AS DESCRIBED.
 HV0236
 HV0236                          STATION RECOVERY (2009)
 HV0236
 HV0236'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 HV0236'RECOVERED IN GOOD CONDITION.
 HV0236
 HV0236                          STATION RECOVERY (2012)
 HV0236
 HV0236'RECOVERY NOTE BY GEOCACHING 2012 (MFM)
 HV0236'RECOVERED AS DESCRIBED.
 HV0236
 HV0236                          STATION RECOVERY (2015)
 HV0236
 HV0236'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 HV0236'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1552 ***********************************************************************
 JV1552  DESIGNATION -  19 PRR
 JV1552  PID         -  JV1552
 JV1552  STATE/COUNTY-  MD/BALTIMORE
 JV1552  COUNTRY     -  US
 JV1552  USGS QUAD   -  HEREFORD (2016)
 JV1552
 JV1552                         *CURRENT SURVEY CONTROL
 JV1552  ______________________________________________________________________
 JV1552* NAD 83(1986) POSITION- 39 30 30.     (N) 076 37 36.     (W)   SCALED
 JV1552* NAVD 88 ORTHO HEIGHT -    77.439 (meters)      254.06  (feet) ADJUSTED
 JV1552  ______________________________________________________________________
 JV1552  GEOID HEIGHT    -        -32.395 (meters)                     GEOID18
 JV1552  DYNAMIC HEIGHT  -         77.399 (meters)      253.93  (feet) COMP
 JV1552  MODELED GRAVITY -    980,115.2   (mgal)                       NAVD 88
 JV1552
 JV1552  VERT ORDER      -  SECOND    CLASS 0
 JV1552
 JV1552.The horizontal coordinates were scaled from a map and have
 JV1552.an estimated accuracy of +/- 6 seconds.
 JV1552
 JV1552.The orthometric height was determined by differential leveling and
 JV1552.adjusted by the NATIONAL GEODETIC SURVEY
 JV1552.in June 1991.
 JV1552
 JV1552.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1552.GEOID18 height accuracy estimate available here.
 JV1552
 JV1552.Click photographs - Photos may exist for this station.
 JV1552
 JV1552.The dynamic height is computed by dividing the NAVD 88
 JV1552.geopotential number by the normal gravity value computed on the
 JV1552.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1552.degrees latitude (g = 980.6199 gals.).
 JV1552
 JV1552.The modeled gravity was interpolated from observed gravity values.
 JV1552
 JV1552;                    North         East    Units  Estimated Accuracy
 JV1552;SPC MD       -   204,510.      432,110.      MT  (+/- 180 meters Scaled)
 JV1552
 JV1552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ601744(NAD 83)
 JV1552
 JV1552                          SUPERSEDED SURVEY CONTROL
 JV1552
 JV1552  NGVD 29 (11/26/84)   77.675  (m)          254.84   (f) ADJUSTED    2 0
 JV1552
 JV1552.Superseded values are not recommended for survey control.
 JV1552
 JV1552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1552.See file dsdata.pdf to determine how the superseded data were derived.
 JV1552
 JV1552_MARKER: B = BOLT
 JV1552_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1552_SP_SET: BRIDGE
 JV1552_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1552
 JV1552  HISTORY     - Date     Condition        Report By
 JV1552  HISTORY     - UNK      MONUMENTED       PRR
 JV1552  HISTORY     - 1942     GOOD             CGS
 JV1552
 JV1552                          STATION DESCRIPTION
 JV1552
 JV1552'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1552'1.1 MI N FROM ASHLAND.
 JV1552'1.1 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE FORMER
 JV1552'STATION AT ASHLAND, BALTIMORE COUNTY, ABOUT 990 FEET SOUTH OF
 JV1552'MILEPOST 17, 118 FEET NORTH OF A WATER STAND, IN THE TOP OF THE
 JV1552'SOUTHWEST CORNER OF BRIDGE 16.84, AND 9 FEET WEST OF THE
 JV1552'CENTERLINE OF THE WEST TRACK.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0252 ***********************************************************************
 HU0252  DESIGNATION -  19.50
 HU0252  PID         -  HU0252
 HU0252  STATE/COUNTY-  MD/WORCESTER
 HU0252  COUNTRY     -  US
 HU0252  USGS QUAD   -  SELBYVILLE (2016)
 HU0252
 HU0252                         *CURRENT SURVEY CONTROL
 HU0252  ______________________________________________________________________
 HU0252* NAD 83(1986) POSITION- 38 24 04.     (N) 075 12 57.     (W)   SCALED
 HU0252* NAVD 88 ORTHO HEIGHT -     5.355 (meters)       17.57  (feet) ADJUSTED
 HU0252  ______________________________________________________________________
 HU0252  GEOID HEIGHT    -        -35.928 (meters)                     GEOID18
 HU0252  DYNAMIC HEIGHT  -          5.351 (meters)       17.56  (feet) COMP
 HU0252  MODELED GRAVITY -    980,013.8   (mgal)                       NAVD 88
 HU0252
 HU0252  VERT ORDER      -  SECOND    CLASS 0
 HU0252
 HU0252.The horizontal coordinates were scaled from a map and have
 HU0252.an estimated accuracy of +/- 6 seconds.
 HU0252
 HU0252.The orthometric height was determined by differential leveling and
 HU0252.adjusted by the NATIONAL GEODETIC SURVEY
 HU0252.in June 1991.
 HU0252
 HU0252.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0252.GEOID18 height accuracy estimate available here.
 HU0252
 HU0252.Click photographs - Photos may exist for this station.
 HU0252
 HU0252.The dynamic height is computed by dividing the NAVD 88
 HU0252.geopotential number by the normal gravity value computed on the
 HU0252.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0252.degrees latitude (g = 980.6199 gals.).
 HU0252
 HU0252.The modeled gravity was interpolated from observed gravity values.
 HU0252
 HU0252;                    North         East    Units  Estimated Accuracy
 HU0252;SPC MD       -    83,050.      555,840.      MT  (+/- 180 meters Scaled)
 HU0252
 HU0252_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH811503(NAD 83)
 HU0252
 HU0252                          SUPERSEDED SURVEY CONTROL
 HU0252
 HU0252  NGVD 29 (02/25/92)    5.597  (m)           18.36   (f) ADJUSTED    2 0
 HU0252  NGVD 29 (??/??/87)    5.597  (m)           18.36   (f) SUPERSEDED  2 0
 HU0252
 HU0252.Superseded values are not recommended for survey control.
 HU0252
 HU0252.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0252.See file dsdata.pdf to determine how the superseded data were derived.
 HU0252
 HU0252_MARKER: B = BOLT
 HU0252_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU0252_SP_SET: BRIDGE
 HU0252_MARK LOGO: NONE
 HU0252_MAGNETIC: I = MARKER IS A STEEL ROD
 HU0252_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0252_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0252+SATELLITE: SATELLITE OBSERVATIONS - July 02, 1991
 HU0252
 HU0252  HISTORY     - Date     Condition        Report By
 HU0252  HISTORY     - UNK      MONUMENTED       PRR
 HU0252  HISTORY     - 1962     GOOD             CGS
 HU0252  HISTORY     - 1973     GOOD             MDDT
 HU0252  HISTORY     - 19910702 GOOD             MDSHA
 HU0252
 HU0252                          STATION DESCRIPTION
 HU0252
 HU0252'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0252'AT SHOWELL.
 HU0252'AT SHOWELL, WORCESTER COUNTY, 0.2 MILE NORTH ALONG THE PENNSYLVANIA
 HU0252'RAILROAD, ON RAILROAD BRIDGE 22-63, ON TOP OF THE NORTH END OF THE
 HU0252'EAST HEADWALL OF THE BRIDGE, 11.5 FEET EAST OF THE CENTERLINE OF
 HU0252'THE TRACK AND ABOUT 1.5 FEET LOWER THAN THE TRACK.  A COPPER BOLT.
 HU0252'NOTE-- IT WAS REPORTED IN MAY, 1942, THAT THE PENNSYLVANIA RAILROAD
 HU0252'STATION AT SHOWELL HAS BEEN TORN DOWN.
 HU0252
 HU0252                          STATION RECOVERY (1973)
 HU0252
 HU0252'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1973
 HU0252'RECOVERED IN GOOD CONDITION.
 HU0252
 HU0252                          STATION RECOVERY (1991)
 HU0252
 HU0252'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU0252'THE MARK IS LOCATED ABOUT 5.3 MI (8.5 KM) NORTH OF BERLIN, 6.53 KM
 HU0252'(4.06 MI) SOUTH OF SELBYVILLE DELAWARE, 0.4 KM (0.2 MI) NORTHWEST OF
 HU0252'THE SMALL COMMUNITY OF SHOWELL AND ON RAILROAD RIGHT-OF-WAY.  TO
 HU0252'REACH FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 IN BERLIN,
 HU0252'GO NORTH ON U.S. HIGHWAY 113 FOR 4.57 MI (7.35 KM) TO AN
 HU0252'INTERSECTION.  TURN LEFT AND GO WEST ON PITTS ROAD FOR 0.37 KM (0.23
 HU0252'MI) TO A ROAD RIGHT AND A RAILROAD CROSSING.  TURN RIGHT AND GO NORTH
 HU0252'FOR 0.28 KM (0.17 MI) TO THE END OF THE ROAD AND A HOUSE.  CONTINUE
 HU0252'NORTH ALONG THE RAILROAD FOR 0.1 KM (0.1 MI) TO THE BRIDGE OVER
 HU0252'MIDDLE BRANCH AND THE MARK.  IT IS 1272.0 FT (387.7 M) NORTH OF THE
 HU0252'CENTER LINE OF PITTS ROAD, 54.0 FT (16.5 M) SOUTHWEST OF POWERLINE
 HU0252'POLE NUMBER 57855, 8.8 FT (2.7 M) EAST OF THE EAST RAIL OF THE
 HU0252'RAILROAD, 6.1 FT (1.9 M) NORTH OF THE CENTER LINE OF THE BRIDGE AND
 HU0252'SET IN A DRILL HOLE IN THE NORTHEAST CORNER OF THE BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1042 ***********************************************************************
 JV1042  DESIGNATION -  1900 WSSC
 JV1042  PID         -  JV1042
 JV1042  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1042  COUNTRY     -  US
 JV1042  USGS QUAD   -  BELTSVILLE (2016)
 JV1042
 JV1042                         *CURRENT SURVEY CONTROL
 JV1042  ______________________________________________________________________
 JV1042* NAD 83(1986) POSITION- 39 06 03.     (N) 076 54 26.     (W)   SCALED
 JV1042* NAVD 88 ORTHO HEIGHT -   121.75  (+/-2cm)      399.4   (feet) VERTCON3
 JV1042  ______________________________________________________________________
 JV1042  GEOID HEIGHT    -        -32.118 (meters)                     GEOID18
 JV1042  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1042
 JV1042.The horizontal coordinates were scaled from a map and have
 JV1042.an estimated accuracy of +/- 6 seconds.
 JV1042
 JV1042.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1042.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1042
 JV1042.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1042.GEOID18 height accuracy estimate available here.
 JV1042
 JV1042.The vertical order pertains to the NGVD 29 superseded value.
 JV1042
 JV1042.Click photographs - Photos may exist for this station.
 JV1042
 JV1042;                    North         East    Units  Estimated Accuracy
 JV1042;SPC MD       -   159,200.      408,030.      MT  (+/- 180 meters Scaled)
 JV1042
 JV1042_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ350296(NAD 83)
 JV1042
 JV1042                          SUPERSEDED SURVEY CONTROL
 JV1042
 JV1042  NGVD 29 (11/26/84)  121.960  (m)          400.13   (f) ADJUSTED    2 0
 JV1042
 JV1042.Superseded values are not recommended for survey control.
 JV1042
 JV1042.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1042.See file dsdata.pdf to determine how the superseded data were derived.
 JV1042
 JV1042_MARKER: DD = SURVEY DISK
 JV1042_SETTING: 0 = UNSPECIFIED SETTING
 JV1042_SP_SET: IRON PIPE
 JV1042_STAMPING: 1900
 JV1042_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1042
 JV1042  HISTORY     - Date     Condition        Report By
 JV1042  HISTORY     - UNK      MONUMENTED       WSSC
 JV1042  HISTORY     - 1939     GOOD             WSSC
 JV1042
 JV1042                          STATION DESCRIPTION
 JV1042
 JV1042'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1042'1.7 MI SE FROM BURTONSVILLE.
 JV1042'ON SANDY SPRING ROAD, ABOUT 1 MILE WEST OF WILLIS SCHOOL, 0.2 MILE
 JV1042'EAST OF THE PRINCE GEORGES-MONTGOMERY COUNTY LINE, ON THE WEST
 JV1042'SIDE OF A DIRT ROAD LEADING SOUTH, AND 91 FEET SOUTH OF SANDY
 JV1042'SPRING ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1059 ***********************************************************************
 JV1059  DESIGNATION -  1901 WSSC
 JV1059  PID         -  JV1059
 JV1059  STATE/COUNTY-  MD/MONTGOMERY
 JV1059  COUNTRY     -  US
 JV1059  USGS QUAD   -  BELTSVILLE (2016)
 JV1059
 JV1059                         *CURRENT SURVEY CONTROL
 JV1059  ______________________________________________________________________
 JV1059* NAD 83(1986) POSITION- 39 07 19.     (N) 076 59 19.     (W)   SCALED
 JV1059* NAVD 88 ORTHO HEIGHT -   160.01  (+/-2cm)      525.0   (feet) VERTCON3
 JV1059  ______________________________________________________________________
 JV1059  GEOID HEIGHT    -        -31.967 (meters)                     GEOID18
 JV1059  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1059
 JV1059.The horizontal coordinates were scaled from a map and have
 JV1059.an estimated accuracy of +/- 6 seconds.
 JV1059
 JV1059.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1059.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1059
 JV1059.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1059.GEOID18 height accuracy estimate available here.
 JV1059
 JV1059.The vertical order pertains to the NGVD 29 superseded value.
 JV1059
 JV1059.Click photographs - Photos may exist for this station.
 JV1059
 JV1059;                    North         East    Units  Estimated Accuracy
 JV1059;SPC MD       -   161,540.      400,990.      MT  (+/- 180 meters Scaled)
 JV1059
 JV1059_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ280321(NAD 83)
 JV1059
 JV1059                          SUPERSEDED SURVEY CONTROL
 JV1059
 JV1059  NGVD 29 (11/26/84)  160.221  (m)          525.66   (f) ADJUSTED    2 0
 JV1059
 JV1059.Superseded values are not recommended for survey control.
 JV1059
 JV1059.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1059.See file dsdata.pdf to determine how the superseded data were derived.
 JV1059
 JV1059_MARKER: DD = SURVEY DISK
 JV1059_SETTING: 0 = UNSPECIFIED SETTING
 JV1059_SP_SET: IRON PIPE
 JV1059_STAMPING: 1901
 JV1059_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1059
 JV1059  HISTORY     - Date     Condition        Report By
 JV1059  HISTORY     - UNK      MONUMENTED       WSSC
 JV1059  HISTORY     - 1939     GOOD             WSSC
 JV1059
 JV1059                          STATION DESCRIPTION
 JV1059
 JV1059'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1059'IN BROWNS CORNER.
 JV1059'ABOUT 200 FEET SOUTH OF THE JUNCTION OF SANDY SPRING ROAD AND
 JV1059'COLESVILLE ROAD, 30 FEET WEST OF THE CENTERLINE OF THE ROAD, 70
 JV1059'FEET NORTHWEST ACROSS COLESVILLE ROAD FROM THE NORTHWEST CORNER
 JV1059'OF A CONCRETE-BLOCK BUILDING, 76.5 FEET NORTH OF THE NORTHWEST
 JV1059'CORNER OF A HOUSE, 25.3 FEET NORTHWEST OF A TREE, AND IN THE
 JV1059'FENCE LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2671 ***********************************************************************
 JV2671  DESIGNATION -  1902 WSSC
 JV2671  PID         -  JV2671
 JV2671  STATE/COUNTY-  MD/MONTGOMERY
 JV2671  COUNTRY     -  US
 JV2671  USGS QUAD   -  SANDY SPRING (2016)
 JV2671
 JV2671                         *CURRENT SURVEY CONTROL
 JV2671  ______________________________________________________________________
 JV2671* NAD 83(1986) POSITION- 39 08 54.     (N) 077 00 43.     (W)   SCALED
 JV2671* NAVD 88 ORTHO HEIGHT -   151.58  (+/-2cm)      497.3   (feet) VERTCON3
 JV2671  ______________________________________________________________________
 JV2671  GEOID HEIGHT    -        -31.919 (meters)                     GEOID18
 JV2671  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2671
 JV2671.The horizontal coordinates were scaled from a map and have
 JV2671.an estimated accuracy of +/- 6 seconds.
 JV2671
 JV2671.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2671.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2671
 JV2671.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2671.GEOID18 height accuracy estimate available here.
 JV2671
 JV2671.The vertical order pertains to the NGVD 29 superseded value.
 JV2671
 JV2671.Click photographs - Photos may exist for this station.
 JV2671
 JV2671;                    North         East    Units  Estimated Accuracy
 JV2671;SPC MD       -   164,470.      398,970.      MT  (+/- 180 meters Scaled)
 JV2671
 JV2671_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ261351(NAD 83)
 JV2671
 JV2671                          SUPERSEDED SURVEY CONTROL
 JV2671
 JV2671  NGVD 29 (11/26/84)  151.792  (m)          498.00   (f) ADJUSTED    2 0
 JV2671
 JV2671.Superseded values are not recommended for survey control.
 JV2671
 JV2671.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2671.See file dsdata.pdf to determine how the superseded data were derived.
 JV2671
 JV2671_MARKER: DD = SURVEY DISK
 JV2671_SETTING: 0 = UNSPECIFIED SETTING
 JV2671_SP_SET: IRON PIPE
 JV2671_STAMPING: 1902
 JV2671_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2671
 JV2671  HISTORY     - Date     Condition        Report By
 JV2671  HISTORY     - UNK      MONUMENTED       WSSC
 JV2671  HISTORY     - 1944     GOOD             WSSC
 JV2671  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2671
 JV2671                          STATION DESCRIPTION
 JV2671
 JV2671'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2671'AT ASHTON.
 JV2671'300 FEET SOUTH OF THE INTERSECTION OF STATE HIGHWAY 108 AND
 JV2671'STATE HIGHWAY 29, ON THE COLESVILLE ROAD, 68 FEET WEST OF THE
 JV2671'CENTERLINE OF THE ROAD, ON LINE BETWEEN THE METHODIST CHURCH
 JV2671'PROPERTY AND THE PROPERTY OF ROBERT CUFF, 50 FEET NORTHEAST OF
 JV2671'THE NORTHEAST CORNER OF THE CHURCH, AND 44.5 FEET EAST OF THE
 JV2671'SOUTHEAST CORNER OF THE HOUSE.
 JV2671
 JV2671                          STATION RECOVERY (1995)
 JV2671
 JV2671'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2671'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1340 ***********************************************************************
 HV1340  DESIGNATION -  1903 WSSC
 HV1340  PID         -  HV1340
 HV1340  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1340  COUNTRY     -  US
 HV1340  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1340
 HV1340                         *CURRENT SURVEY CONTROL
 HV1340  ______________________________________________________________________
 HV1340* NAD 83(1986) POSITION- 38 55 08.     (N) 076 55 52.     (W)   SCALED
 HV1340* NAVD 88 ORTHO HEIGHT -     3.10  (+/-2cm)       10.2   (feet) VERTCON3
 HV1340  ______________________________________________________________________
 HV1340  GEOID HEIGHT    -        -32.241 (meters)                     GEOID18
 HV1340  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1340
 HV1340.The horizontal coordinates were scaled from a map and have
 HV1340.an estimated accuracy of +/- 6 seconds.
 HV1340
 HV1340.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1340.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1340
 HV1340.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1340.GEOID18 height accuracy estimate available here.
 HV1340
 HV1340.The vertical order pertains to the NGVD 29 superseded value.
 HV1340
 HV1340.Click photographs - Photos may exist for this station.
 HV1340
 HV1340;                    North         East    Units  Estimated Accuracy
 HV1340;SPC MD       -   139,000.      405,970.      MT  (+/- 180 meters Scaled)
 HV1340
 HV1340_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ325095(NAD 83)
 HV1340
 HV1340                          SUPERSEDED SURVEY CONTROL
 HV1340
 HV1340  NGVD 29 (11/26/84)    3.338  (m)           10.95   (f) ADJUSTED    2 0
 HV1340
 HV1340.Superseded values are not recommended for survey control.
 HV1340
 HV1340.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1340.See file dsdata.pdf to determine how the superseded data were derived.
 HV1340
 HV1340_MARKER: DD = SURVEY DISK
 HV1340_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1340_STAMPING: 1903
 HV1340_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1340
 HV1340  HISTORY     - Date     Condition        Report By
 HV1340  HISTORY     - UNK      MONUMENTED       WSSC
 HV1340  HISTORY     - 1944     GOOD             WSSC
 HV1340
 HV1340                          STATION DESCRIPTION
 HV1340
 HV1340'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1340'0.7 MI NE FROM MD DC LINE.
 HV1340'AT THE INTERSECTION OF KENILWORTH AVENUE AND TUXEDO ROAD.
 HV1340'PROBABLY DESTROYED BY WORK DONE BY THE STATE ROAD COMMISSION
 HV1340'IN BUILDING THE KENILWORTH INTERCHANGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2640 ***********************************************************************
 JV2640  DESIGNATION -  1904 WSSC
 JV2640  PID         -  JV2640
 JV2640  STATE/COUNTY-  MD/MONTGOMERY
 JV2640  COUNTRY     -  US
 JV2640  USGS QUAD   -  SANDY SPRING (2016)
 JV2640
 JV2640                         *CURRENT SURVEY CONTROL
 JV2640  ______________________________________________________________________
 JV2640* NAD 83(1986) POSITION- 39 10 29.     (N) 077 01 25.     (W)   SCALED
 JV2640* NAVD 88 ORTHO HEIGHT -    97.03  (+/-2cm)      318.3   (feet) VERTCON3
 JV2640  ______________________________________________________________________
 JV2640  GEOID HEIGHT    -        -31.892 (meters)                     GEOID18
 JV2640  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2640
 JV2640.The horizontal coordinates were scaled from a map and have
 JV2640.an estimated accuracy of +/- 6 seconds.
 JV2640
 JV2640.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2640.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2640
 JV2640.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2640.GEOID18 height accuracy estimate available here.
 JV2640
 JV2640.The vertical order pertains to the NGVD 29 superseded value.
 JV2640
 JV2640.Click photographs - Photos may exist for this station.
 JV2640
 JV2640;                    North         East    Units  Estimated Accuracy
 JV2640;SPC MD       -   167,400.      397,960.      MT  (+/- 180 meters Scaled)
 JV2640
 JV2640_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ251381(NAD 83)
 JV2640
 JV2640                          SUPERSEDED SURVEY CONTROL
 JV2640
 JV2640  NGVD 29 (11/26/84)   97.243  (m)          319.04   (f) ADJUSTED    2 0
 JV2640
 JV2640.Superseded values are not recommended for survey control.
 JV2640
 JV2640.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2640.See file dsdata.pdf to determine how the superseded data were derived.
 JV2640
 JV2640_MARKER: DD = SURVEY DISK
 JV2640_SETTING: 0 = UNSPECIFIED SETTING
 JV2640_SP_SET: IRON PIPE
 JV2640_STAMPING: 1904
 JV2640_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2640
 JV2640  HISTORY     - Date     Condition        Report By
 JV2640  HISTORY     - UNK      MONUMENTED       WSSC
 JV2640  HISTORY     - 1944     GOOD             WSSC
 JV2640  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2640
 JV2640                          STATION DESCRIPTION
 JV2640
 JV2640'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2640'0.7 MI N FROM BRINKLOW.
 JV2640'ON THE ASHTON-BRIGHTON ROAD (STATE HIGHWAY 116), ABOUT 600 FEET
 JV2640'NORTH OF THE BRIDGE OVER HAWLINGS RIVER, OPPOSITE A ROAD LEADING
 JV2640'EAST TO HAVILAND MILL, 33.5 FEET WEST OF THE CENTERLINE OF THE
 JV2640'HIGHWAY, 28.2 FEET NORTHEAST OF A 40-INCH OAK TREE, 51 FEET
 JV2640'NORTHWEST OF AN 18-INCH OAK TREE, 27.2 FEET SOUTHWEST OF A 12-INCH
 JV2640'WALNUT TREE, AND 2 FEET NORTH OF A FENCE.
 JV2640
 JV2640                          STATION RECOVERY (1995)
 JV2640
 JV2640'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2640'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1062 ***********************************************************************
 JV1062  DESIGNATION -  1905
 JV1062  PID         -  JV1062
 JV1062  STATE/COUNTY-  MD/MONTGOMERY
 JV1062  COUNTRY     -  US
 JV1062  USGS QUAD   -  CLARKSVILLE (2016)
 JV1062
 JV1062                         *CURRENT SURVEY CONTROL
 JV1062  ______________________________________________________________________
 JV1062* NAD 83(1986) POSITION- 39 08 18.4    (N) 076 59 43.4    (W)   HD_HELD2
 JV1062* NAVD 88 ORTHO HEIGHT -   163.51  (+/-2cm)      536.4   (feet) VERTCON3
 JV1062  ______________________________________________________________________
 JV1062  GEOID HEIGHT    -        -31.951 (meters)                     GEOID18
 JV1062  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1062
 JV1062.The horizontal coordinates were established by autonomous hand held GPS
 JV1062.observations and have an estimated accuracy of +/- 10 meters.
 JV1062
 JV1062.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1062.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1062
 JV1062.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1062.GEOID18 height accuracy estimate available here.
 JV1062
 JV1062.The vertical order pertains to the NGVD 29 superseded value.
 JV1062
 JV1062.Click photographs - Photos may exist for this station.
 JV1062
 JV1062;                    North         East    Units  Estimated Accuracy
 JV1062;SPC MD       -   163,375.      400,399.      MT  (+/- 10 meters HH2 GPS)
 JV1062
 JV1062_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2754534035(NAD 83)
 JV1062
 JV1062                          SUPERSEDED SURVEY CONTROL
 JV1062
 JV1062  NGVD 29 (11/26/84)  163.721  (m)          537.14   (f) ADJUSTED    2 0
 JV1062
 JV1062.Superseded values are not recommended for survey control.
 JV1062
 JV1062.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1062.See file dsdata.pdf to determine how the superseded data were derived.
 JV1062
 JV1062_MARKER: DD = SURVEY DISK
 JV1062_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1062_STAMPING: 1905
 JV1062_MARK LOGO: WSSC
 JV1062_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1062_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1062_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1062+SATELLITE: SATELLITE OBSERVATIONS - December 29, 2006
 JV1062
 JV1062  HISTORY     - Date     Condition        Report By
 JV1062  HISTORY     - UNK      MONUMENTED       WSSC
 JV1062  HISTORY     - 1967     GOOD             MDSRC
 JV1062  HISTORY     - 20020125 GOOD             MDSHA
 JV1062  HISTORY     - 20041006 GOOD             GEOCAC
 JV1062  HISTORY     - 20061229 GOOD             NGS
 JV1062
 JV1062                          STATION DESCRIPTION
 JV1062
 JV1062'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1062'0.2 MI N FROM EDNOR.
 JV1062'ON COLESVILLE ROAD, AT THE JUNCTION OF A PRIVATE DRIVE TO THE
 JV1062'W.J. THOMAS RESIDENCE, 44 FT. EAST OF THE CENTERLINE OF COLESVILLE
 JV1062'RD., AND 21.5 FEET SOUTH OF THE PRIVATE DRIVE, 59.3 SOUTH OF A
 JV1062'POWER POLE NOT NUMBERED.
 JV1062
 JV1062                          STATION RECOVERY (2002)
 JV1062
 JV1062'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV1062'THE STATION WAS RECOVERED IN GOOD CONDITION, A NEW DESCRIPTION
 JV1062'FOLLOWS.  THE STATION IS LOCATED ABOUT 1.2 MI (1.93 KM) SOUTHEAST OF
 JV1062'ASTON AND 9.1 MI (14.65 KM) NORTHEAST OF ROCKVILLE.  TO REACH THE
 JV1062'STATION FROM THE INTERSECTION OF STATE HIGHWAY 650 AND STATE HIGHWAY
 JV1062'108 IN ASHTON, GO SOUTHEAST ALONG STATE HIGHWAY 650 FOR 1.2 MI (1.93
 JV1062'KM) TO THE SHRI MANGAL MANDIR TEMPLE ON THE RIGHT AND THE STATION ON
 JV1062'THE LEFT. NOTE=THE STATION IS ALSO 0.2 MI (0.32 KM) NORTH OF EDNOR
 JV1062'ROAD.  THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A 2 INCH (5
 JV1062'CM) ROUND METAL PIPE WHICH IS FLUSH WITH THE GROUND. IT IS 44.5 FT
 JV1062'(13.6 M) EAST OF THE CENTER LINE OF THE HIGHWAY, 21.5 FT (6.6 M) SOUTH
 JV1062'OF THE CENTER OF THE GRAVEL DRIVEWAY LEADING TO HOUSE NUMBER 17107,
 JV1062'39.0 FT (11.9 M) NORTHEAST OF A FIRE HYDRANT, 46.0 FT (14.0 M)
 JV1062'NORTHEAST OF TELEPHONE POLE NUMBER 368, AND 1.3 FT (0.4 M) WEST OF A
 JV1062'FIBERGLAS WITNESS POST.
 JV1062
 JV1062                          STATION RECOVERY (2004)
 JV1062
 JV1062'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV1062'RECOVERED IN GOOD CONDITION.
 JV1062
 JV1062                          STATION RECOVERY (2006)
 JV1062
 JV1062'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV1062'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1053 ***********************************************************************
 JV1053  DESIGNATION -  1906 WSSC
 JV1053  PID         -  JV1053
 JV1053  STATE/COUNTY-  MD/MONTGOMERY
 JV1053  COUNTRY     -  US
 JV1053  USGS QUAD   -  BELTSVILLE (2016)
 JV1053
 JV1053                         *CURRENT SURVEY CONTROL
 JV1053  ______________________________________________________________________
 JV1053* NAD 83(1986) POSITION- 39 06 58.     (N) 076 57 56.     (W)   SCALED
 JV1053* NAVD 88 ORTHO HEIGHT -   157.39  (+/-2cm)      516.4   (feet) VERTCON3
 JV1053  ______________________________________________________________________
 JV1053  GEOID HEIGHT    -        -32.008 (meters)                     GEOID18
 JV1053  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1053
 JV1053.The horizontal coordinates were scaled from a map and have
 JV1053.an estimated accuracy of +/- 6 seconds.
 JV1053
 JV1053.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1053.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1053
 JV1053.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1053.GEOID18 height accuracy estimate available here.
 JV1053
 JV1053.The vertical order pertains to the NGVD 29 superseded value.
 JV1053
 JV1053.Click photographs - Photos may exist for this station.
 JV1053
 JV1053;                    North         East    Units  Estimated Accuracy
 JV1053;SPC MD       -   160,900.      402,980.      MT  (+/- 180 meters Scaled)
 JV1053
 JV1053_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ300315(NAD 83)
 JV1053
 JV1053                          SUPERSEDED SURVEY CONTROL
 JV1053
 JV1053  NGVD 29 (11/26/84)  157.596  (m)          517.05   (f) ADJUSTED    2 0
 JV1053
 JV1053.Superseded values are not recommended for survey control.
 JV1053
 JV1053.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1053.See file dsdata.pdf to determine how the superseded data were derived.
 JV1053
 JV1053_MARKER: DD = SURVEY DISK
 JV1053_SETTING: 0 = UNSPECIFIED SETTING
 JV1053_SP_SET: IRON PIPE
 JV1053_STAMPING: 1906
 JV1053_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1053
 JV1053  HISTORY     - Date     Condition        Report By
 JV1053  HISTORY     - UNK      MONUMENTED       WSSC
 JV1053  HISTORY     - 1939     GOOD             WSSC
 JV1053
 JV1053                          STATION DESCRIPTION
 JV1053
 JV1053'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1053'AT SPENCERVILLE.
 JV1053'ON SANDY SPRING ROAD, AT THE POST OFFICE AND GENERAL STORE, NEAR
 JV1053'THE NORTHEAST CORNER OF THE BUILDING, AND IN THE LAWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1043 ***********************************************************************
 JV1043  DESIGNATION -  1907 WSSC
 JV1043  PID         -  JV1043
 JV1043  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1043  COUNTRY     -  US
 JV1043  USGS QUAD   -  BELTSVILLE (2016)
 JV1043
 JV1043                         *CURRENT SURVEY CONTROL
 JV1043  ______________________________________________________________________
 JV1043* NAD 83(1986) POSITION- 39 06 12.     (N) 076 54 32.     (W)   SCALED
 JV1043* NAVD 88 ORTHO HEIGHT -   121.26  (+/-2cm)      397.8   (feet) VERTCON3
 JV1043  ______________________________________________________________________
 JV1043  GEOID HEIGHT    -        -32.114 (meters)                     GEOID18
 JV1043  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1043
 JV1043.The horizontal coordinates were scaled from a map and have
 JV1043.an estimated accuracy of +/- 6 seconds.
 JV1043
 JV1043.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1043.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1043
 JV1043.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1043.GEOID18 height accuracy estimate available here.
 JV1043
 JV1043.The vertical order pertains to the NGVD 29 superseded value.
 JV1043
 JV1043.Click photographs - Photos may exist for this station.
 JV1043
 JV1043;                    North         East    Units  Estimated Accuracy
 JV1043;SPC MD       -   159,480.      407,880.      MT  (+/- 180 meters Scaled)
 JV1043
 JV1043_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ349299(NAD 83)
 JV1043
 JV1043                          SUPERSEDED SURVEY CONTROL
 JV1043
 JV1043  NGVD 29 (11/26/84)  121.466  (m)          398.51   (f) ADJUSTED    2 0
 JV1043
 JV1043.Superseded values are not recommended for survey control.
 JV1043
 JV1043.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1043.See file dsdata.pdf to determine how the superseded data were derived.
 JV1043
 JV1043_MARKER: DD = SURVEY DISK
 JV1043_SETTING: 0 = UNSPECIFIED SETTING
 JV1043_SP_SET: IRON PIPE
 JV1043_STAMPING: 1907
 JV1043_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1043
 JV1043  HISTORY     - Date     Condition        Report By
 JV1043  HISTORY     - UNK      MONUMENTED       WSSC
 JV1043  HISTORY     - 1939     GOOD             WSSC
 JV1043
 JV1043                          STATION DESCRIPTION
 JV1043
 JV1043'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1043'1.5 MI SE FROM BURTONSVILLE.
 JV1043'ON SANDY SPRING ROAD, AT THE MONTGOMERY-PRINCE GEORGES COUNTY
 JV1043'LINE, ON THE NORTHEAST SIDE OF THE ROAD, AND 2 FEET SOUTHWEST
 JV1043'OF A COUNTY-LINE MARKER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2634 ***********************************************************************
 JV2634  DESIGNATION -  1908 WSSC
 JV2634  PID         -  JV2634
 JV2634  STATE/COUNTY-  MD/MONTGOMERY
 JV2634  COUNTRY     -  US
 JV2634  USGS QUAD   -  SANDY SPRING (2016)
 JV2634
 JV2634                         *CURRENT SURVEY CONTROL
 JV2634  ______________________________________________________________________
 JV2634* NAD 83(1986) POSITION- 39 08 47.     (N) 077 00 26.     (W)   SCALED
 JV2634* NAVD 88 ORTHO HEIGHT -   156.31  (+/-2cm)      512.8   (feet) VERTCON3
 JV2634  ______________________________________________________________________
 JV2634  GEOID HEIGHT    -        -31.928 (meters)                     GEOID18
 JV2634  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2634
 JV2634.The horizontal coordinates were scaled from a map and have
 JV2634.an estimated accuracy of +/- 6 seconds.
 JV2634
 JV2634.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2634.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2634
 JV2634.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2634.GEOID18 height accuracy estimate available here.
 JV2634
 JV2634.The vertical order pertains to the NGVD 29 superseded value.
 JV2634
 JV2634.Click photographs - Photos may exist for this station.
 JV2634
 JV2634;                    North         East    Units  Estimated Accuracy
 JV2634;SPC MD       -   164,260.      399,380.      MT  (+/- 180 meters Scaled)
 JV2634
 JV2634_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ265349(NAD 83)
 JV2634
 JV2634                          SUPERSEDED SURVEY CONTROL
 JV2634
 JV2634  NGVD 29 (11/26/84)  156.521  (m)          513.52   (f) ADJUSTED    2 0
 JV2634
 JV2634.Superseded values are not recommended for survey control.
 JV2634
 JV2634.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2634.See file dsdata.pdf to determine how the superseded data were derived.
 JV2634
 JV2634_MARKER: DD = SURVEY DISK
 JV2634_SETTING: 0 = UNSPECIFIED SETTING
 JV2634_SP_SET: IRON PIPE
 JV2634_STAMPING: 1908
 JV2634_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2634
 JV2634  HISTORY     - Date     Condition        Report By
 JV2634  HISTORY     - UNK      MONUMENTED       WSSC
 JV2634  HISTORY     - 1944     GOOD             WSSC
 JV2634  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2634
 JV2634                          STATION DESCRIPTION
 JV2634
 JV2634'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2634'0.3 MI S FROM ASHTON.
 JV2634'ON COLESVILLE ROAD, AT SAM RICES POULTRY FARM, 52 FEET EAST OF
 JV2634'THE CENTERLINE OF THE ROAD, 81.1 FEET NORTH OF A 36-INCH POPLAR
 JV2634'TREE, AND 68.1 FEET NORTHEAST OF A 30-INCH MAPLE TREE.
 JV2634
 JV2634                          STATION RECOVERY (1995)
 JV2634
 JV2634'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2634'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2651 ***********************************************************************
 JV2651  DESIGNATION -  1909 A WSSC
 JV2651  PID         -  JV2651
 JV2651  STATE/COUNTY-  MD/MONTGOMERY
 JV2651  COUNTRY     -  US
 JV2651  USGS QUAD   -  SANDY SPRING (2016)
 JV2651
 JV2651                         *CURRENT SURVEY CONTROL
 JV2651  ______________________________________________________________________
 JV2651* NAD 83(1986) POSITION- 39 14 05.     (N) 077 03 22.     (W)   SCALED
 JV2651* NAVD 88 ORTHO HEIGHT -   131.04  (+/-2cm)      429.9   (feet) VERTCON3
 JV2651  ______________________________________________________________________
 JV2651  GEOID HEIGHT    -        -31.839 (meters)                     GEOID18
 JV2651  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2651
 JV2651.The horizontal coordinates were scaled from a map and have
 JV2651.an estimated accuracy of +/- 6 seconds.
 JV2651
 JV2651.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2651.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2651
 JV2651.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2651.GEOID18 height accuracy estimate available here.
 JV2651
 JV2651.The vertical order pertains to the NGVD 29 superseded value.
 JV2651
 JV2651.Click photographs - Photos may exist for this station.
 JV2651
 JV2651;                    North         East    Units  Estimated Accuracy
 JV2651;SPC MD       -   174,070.      395,160.      MT  (+/- 180 meters Scaled)
 JV2651
 JV2651_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ225448(NAD 83)
 JV2651
 JV2651                          SUPERSEDED SURVEY CONTROL
 JV2651
 JV2651  NGVD 29 (11/26/84)  131.244  (m)          430.59   (f) ADJUSTED    2 0
 JV2651
 JV2651.Superseded values are not recommended for survey control.
 JV2651
 JV2651.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2651.See file dsdata.pdf to determine how the superseded data were derived.
 JV2651
 JV2651_MARKER: Q = CHISELED SQUARE
 JV2651_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2651_SP_SET: CULVERT
 JV2651_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2651
 JV2651  HISTORY     - Date     Condition        Report By
 JV2651  HISTORY     - UNK      MONUMENTED       WSSC
 JV2651  HISTORY     - 1944     GOOD             WSSC
 JV2651  HISTORY     - 20030821 MARK NOT FOUND   GEOCAC
 JV2651
 JV2651                          STATION DESCRIPTION
 JV2651
 JV2651'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2651'0.8 MI N FROM SUNSHINE.
 JV2651'ON THE SUNSHINE-ROXBURY MILLS ROAD (STATE HIGHWAY 97), ON THE
 JV2651'WEST SIDE OF THE ROAD, AT A CONCRETE CULVERT UNDER THE ROAD, AND
 JV2651'ON THE TOP OF THE HEADWALL.
 JV2651
 JV2651                          STATION RECOVERY (2003)
 JV2651
 JV2651'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV2651'PROBABLE CULVERT IS LOCATED ABOUT 40 FEET SOUTH OF MAILBOX AT HOUSE
 JV2651'NUMBER 23110, BUT THE CULVERT AND HEADWALL WERE TOO OVERGROWN TO
 JV2651'INSPECT FOR THE CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2650 ***********************************************************************
 JV2650  DESIGNATION -  1909 WSSC
 JV2650  PID         -  JV2650
 JV2650  STATE/COUNTY-  MD/MONTGOMERY
 JV2650  COUNTRY     -  US
 JV2650  USGS QUAD   -  SANDY SPRING (2016)
 JV2650
 JV2650                         *CURRENT SURVEY CONTROL
 JV2650  ______________________________________________________________________
 JV2650* NAD 83(1986) POSITION- 39 13 44.     (N) 077 03 27.     (W)   SCALED
 JV2650* NAVD 88 ORTHO HEIGHT -   152.39  (+/-2cm)      500.0   (feet) VERTCON3
 JV2650  ______________________________________________________________________
 JV2650  GEOID HEIGHT    -        -31.836 (meters)                     GEOID18
 JV2650  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2650
 JV2650.The horizontal coordinates were scaled from a map and have
 JV2650.an estimated accuracy of +/- 6 seconds.
 JV2650
 JV2650.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2650.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2650
 JV2650.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2650.GEOID18 height accuracy estimate available here.
 JV2650
 JV2650.The vertical order pertains to the NGVD 29 superseded value.
 JV2650
 JV2650.Click photographs - Photos may exist for this station.
 JV2650
 JV2650;                    North         East    Units  Estimated Accuracy
 JV2650;SPC MD       -   173,420.      395,040.      MT  (+/- 180 meters Scaled)
 JV2650
 JV2650_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ224441(NAD 83)
 JV2650
 JV2650                          SUPERSEDED SURVEY CONTROL
 JV2650
 JV2650  NGVD 29 (11/26/84)  152.594  (m)          500.64   (f) ADJUSTED    2 0
 JV2650
 JV2650.Superseded values are not recommended for survey control.
 JV2650
 JV2650.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2650.See file dsdata.pdf to determine how the superseded data were derived.
 JV2650
 JV2650_MARKER: DD = SURVEY DISK
 JV2650_SETTING: 0 = UNSPECIFIED SETTING
 JV2650_SP_SET: IRON PIPE
 JV2650_STAMPING: 1909
 JV2650_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2650
 JV2650  HISTORY     - Date     Condition        Report By
 JV2650  HISTORY     - UNK      MONUMENTED       WSSC
 JV2650  HISTORY     - 1944     GOOD             WSSC
 JV2650
 JV2650                          STATION DESCRIPTION
 JV2650
 JV2650'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2650'0.4 MI N FROM SUNSHINE.
 JV2650'ON THE SUNSHINE-ROXBURY MILLS ROAD (STATE HIGHWAY 97), IN THE
 JV2650'NORTHEAST CORNER OF A ROAD INTERSECTION, IN THE LAWN OF A HOUSE,
 JV2650'AND 2 FEET NORTH OF THE FENCE LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1048 ***********************************************************************
 JV1048  DESIGNATION -  1910 WSSC
 JV1048  PID         -  JV1048
 JV1048  STATE/COUNTY-  MD/MONTGOMERY
 JV1048  COUNTRY     -  US
 JV1048  USGS QUAD   -  BELTSVILLE (2016)
 JV1048
 JV1048                         *CURRENT SURVEY CONTROL
 JV1048  ______________________________________________________________________
 JV1048* NAD 83(1986) POSITION- 39 06 35.     (N) 076 55 53.     (W)   SCALED
 JV1048* NAVD 88 ORTHO HEIGHT -   150.19  (+/-2cm)      492.7   (feet) VERTCON3
 JV1048  ______________________________________________________________________
 JV1048  GEOID HEIGHT    -        -32.068 (meters)                     GEOID18
 JV1048  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1048
 JV1048.The horizontal coordinates were scaled from a map and have
 JV1048.an estimated accuracy of +/- 6 seconds.
 JV1048
 JV1048.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1048.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1048
 JV1048.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1048.GEOID18 height accuracy estimate available here.
 JV1048
 JV1048.The vertical order pertains to the NGVD 29 superseded value.
 JV1048
 JV1048.Click photographs - Photos may exist for this station.
 JV1048
 JV1048;                    North         East    Units  Estimated Accuracy
 JV1048;SPC MD       -   160,190.      405,930.      MT  (+/- 180 meters Scaled)
 JV1048
 JV1048_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ330307(NAD 83)
 JV1048
 JV1048                          SUPERSEDED SURVEY CONTROL
 JV1048
 JV1048  NGVD 29 (11/26/84)  150.398  (m)          493.43   (f) ADJUSTED    2 0
 JV1048
 JV1048.Superseded values are not recommended for survey control.
 JV1048
 JV1048.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1048.See file dsdata.pdf to determine how the superseded data were derived.
 JV1048
 JV1048_MARKER: DD = SURVEY DISK
 JV1048_SETTING: 0 = UNSPECIFIED SETTING
 JV1048_SP_SET: IRON PIPE
 JV1048_STAMPING: 1910
 JV1048_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1048
 JV1048  HISTORY     - Date     Condition        Report By
 JV1048  HISTORY     - UNK      MONUMENTED       WSSC
 JV1048  HISTORY     - 1939     GOOD             WSSC
 JV1048
 JV1048                          STATION DESCRIPTION
 JV1048
 JV1048'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1048'AT BURTONSVILLE.
 JV1048'AT THE INTERSECTION OF SANDY SPRING ROAD AND COLUMBIA ROAD, 100 FEET
 JV1048'SOUTH OF THE INTERSECTION AND THE POST OFFICE, 106.5 FEET NORTH
 JV1048'OF THE NORTHEAST CORNER OF SEIBELS DAIRY PLANT, AND ON THE WEST
 JV1048'SIDE OF COLUMBIA ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2704 ***********************************************************************
 JV2704  DESIGNATION -  1912
 JV2704  PID         -  JV2704
 JV2704  STATE/COUNTY-  MD/MONTGOMERY
 JV2704  COUNTRY     -  US
 JV2704  USGS QUAD   -  KENSINGTON (2016)
 JV2704
 JV2704                         *CURRENT SURVEY CONTROL
 JV2704  ______________________________________________________________________
 JV2704* NAD 83(1986) POSITION- 39 04 58.     (N) 077 07 20.     (W)   SCALED
 JV2704* NAVD 88 ORTHO HEIGHT -   105.04  (+/-2cm)      344.6   (feet) VERTCON3
 JV2704  ______________________________________________________________________
 JV2704  GEOID HEIGHT    -        -31.760 (meters)                     GEOID18
 JV2704  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2704
 JV2704.The horizontal coordinates were scaled from a map and have
 JV2704.an estimated accuracy of +/- 6 seconds.
 JV2704
 JV2704.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2704.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2704
 JV2704.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2704.GEOID18 height accuracy estimate available here.
 JV2704
 JV2704.The vertical order pertains to the NGVD 29 superseded value.
 JV2704
 JV2704.Click photographs - Photos may exist for this station.
 JV2704
 JV2704;                    North         East    Units  Estimated Accuracy
 JV2704;SPC MD       -   157,200.      389,430.      MT  (+/- 180 meters Scaled)
 JV2704
 JV2704_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ164281(NAD 83)
 JV2704
 JV2704                          SUPERSEDED SURVEY CONTROL
 JV2704
 JV2704  NGVD 29 (11/26/84)  105.257  (m)          345.33   (f) ADJUSTED    2 0
 JV2704
 JV2704.Superseded values are not recommended for survey control.
 JV2704
 JV2704.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2704.See file dsdata.pdf to determine how the superseded data were derived.
 JV2704
 JV2704_MARKER: DD = SURVEY DISK
 JV2704_SETTING: 0 = UNSPECIFIED SETTING
 JV2704_STAMPING: 1912
 JV2704_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2704
 JV2704  HISTORY     - Date     Condition        Report By
 JV2704  HISTORY     - UNK      MONUMENTED       WSSC
 JV2704  HISTORY     - 1939     GOOD             WSSC
 JV2704  HISTORY     - 20020125 MARK NOT FOUND   MDSHA
 JV2704
 JV2704                          STATION DESCRIPTION
 JV2704
 JV2704'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2704'1.2 MI E FROM ROCKVILLE.
 JV2704'ON NORBECK ROAD, AT THE JUNCTION OF A DIRT ROAD LEADING SOUTH
 JV2704'TO VIERS MILL ROAD, AND ON THE NORTH SIDE OF NORBECK ROAD.
 JV2704
 JV2704                          STATION RECOVERY (2002)
 JV2704
 JV2704'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV2704'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2589 ***********************************************************************
 JV2589  DESIGNATION -  1913 WSSC
 JV2589  PID         -  JV2589
 JV2589  STATE/COUNTY-  MD/HOWARD
 JV2589  COUNTRY     -  US
 JV2589  USGS QUAD   -  WOODBINE (2016)
 JV2589
 JV2589                         *CURRENT SURVEY CONTROL
 JV2589  ______________________________________________________________________
 JV2589* NAD 83(1986) POSITION- 39 15 57.     (N) 077 06 53.     (W)   SCALED
 JV2589* NAVD 88 ORTHO HEIGHT -   132.69  (+/-2cm)      435.3   (feet) VERTCON3
 JV2589  ______________________________________________________________________
 JV2589  GEOID HEIGHT    -        -31.807 (meters)                     GEOID18
 JV2589  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2589
 JV2589.The horizontal coordinates were scaled from a map and have
 JV2589.an estimated accuracy of +/- 6 seconds.
 JV2589
 JV2589.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2589.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2589
 JV2589.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2589.GEOID18 height accuracy estimate available here.
 JV2589
 JV2589.The vertical order pertains to the NGVD 29 superseded value.
 JV2589
 JV2589.Click photographs - Photos may exist for this station.
 JV2589
 JV2589;                    North         East    Units  Estimated Accuracy
 JV2589;SPC MD       -   177,520.      390,100.      MT  (+/- 180 meters Scaled)
 JV2589
 JV2589_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ175484(NAD 83)
 JV2589
 JV2589                          SUPERSEDED SURVEY CONTROL
 JV2589
 JV2589  NGVD 29 (11/26/84)  132.887  (m)          435.98   (f) ADJUSTED    2 0
 JV2589
 JV2589.Superseded values are not recommended for survey control.
 JV2589
 JV2589.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2589.See file dsdata.pdf to determine how the superseded data were derived.
 JV2589
 JV2589_MARKER: DD = SURVEY DISK
 JV2589_SETTING: 0 = UNSPECIFIED SETTING
 JV2589_SP_SET: IRON PIPE
 JV2589_STAMPING: 1913
 JV2589_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2589
 JV2589  HISTORY     - Date     Condition        Report By
 JV2589  HISTORY     - UNK      MONUMENTED       WSSC
 JV2589  HISTORY     - 1946     GOOD             WSSC
 JV2589
 JV2589                          STATION DESCRIPTION
 JV2589
 JV2589'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2589'1 MI SW FROM HIPSLEYS MILL.
 JV2589'ABOUT 1 MILE SOUTHWEST ALONG THE DAISY-ETCHISON ROAD FROM
 JV2589'HIPSLYES MILL, HOWARD COUNTY, ABOUT 200 FEET NORTH OF PATUXENT
 JV2589'RIVER AT THE HOWARD-MONTGOMERY COUNTY LINE, 74.5 FEET NORTHEAST
 JV2589'OF A 40-INCH OAK TREE, 70.5 FEET WEST OF HUB 11074 AT A DIRT-ROAD
 JV2589'JUNCTION, 3397 FEET NORTHWEST OF ANOTHER 40-INCH OAK TREE, 23
 JV2589'FEET WEST OF THE CENTER LINE OF THE ROAD, AND 7.9 FEET EAST OF
 JV2589'A THIRD 40-INCH OAK TREE.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV2589'STANDARD DISK, STAMPED 1913 AND SET IN THE TOP OF A CONCRETE-FILLED
 JV2589'IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1033 ***********************************************************************
 JV1033  DESIGNATION -  1914 A WSSC
 JV1033  PID         -  JV1033
 JV1033  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1033  COUNTRY     -  US
 JV1033  USGS QUAD   -  LAUREL (2016)
 JV1033
 JV1033                         *CURRENT SURVEY CONTROL
 JV1033  ______________________________________________________________________
 JV1033* NAD 83(1986) POSITION- 39 05 31.     (N) 076 51 38.     (W)   SCALED
 JV1033* NAVD 88 ORTHO HEIGHT -    51.04  (+/-2cm)      167.5   (feet) VERTCON3
 JV1033  ______________________________________________________________________
 JV1033  GEOID HEIGHT    -        -32.228 (meters)                     GEOID18
 JV1033  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1033
 JV1033.The horizontal coordinates were scaled from a map and have
 JV1033.an estimated accuracy of +/- 6 seconds.
 JV1033
 JV1033.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1033.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1033
 JV1033.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1033.GEOID18 height accuracy estimate available here.
 JV1033
 JV1033.The vertical order pertains to the NGVD 29 superseded value.
 JV1033
 JV1033.Click photographs - Photos may exist for this station.
 JV1033
 JV1033;                    North         East    Units  Estimated Accuracy
 JV1033;SPC MD       -   158,220.      412,060.      MT  (+/- 180 meters Scaled)
 JV1033
 JV1033_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ390286(NAD 83)
 JV1033
 JV1033                          SUPERSEDED SURVEY CONTROL
 JV1033
 JV1033  NGVD 29 (11/26/84)   51.260  (m)          168.18   (f) ADJUSTED    2 0
 JV1033
 JV1033.Superseded values are not recommended for survey control.
 JV1033
 JV1033.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1033.See file dsdata.pdf to determine how the superseded data were derived.
 JV1033
 JV1033_MARKER: B = BOLT
 JV1033_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1033_SP_SET: TREE
 JV1033_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1033
 JV1033  HISTORY     - Date     Condition        Report By
 JV1033  HISTORY     - UNK      MONUMENTED       WSSC
 JV1033  HISTORY     - 1939     GOOD             WSSC
 JV1033
 JV1033                          STATION DESCRIPTION
 JV1033
 JV1033'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1033'1 MI S FROM LAUREL.
 JV1033'ON CHERRY LANE, 0.25 MILE WEST OF THE JUNCTION OF U.S. HIGHWAY
 JV1033'1, ON THE NORTH SIDE OF THE ROAD, AND IN THE SOUTHWEST ROOT OF
 JV1033'A 48-INCH POPLAR TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1032 ***********************************************************************
 JV1032  DESIGNATION -  1914 WSSC
 JV1032  PID         -  JV1032
 JV1032  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1032  COUNTRY     -  US
 JV1032  USGS QUAD   -  LAUREL (2016)
 JV1032
 JV1032                         *CURRENT SURVEY CONTROL
 JV1032  ______________________________________________________________________
 JV1032* NAD 83(1986) POSITION- 39 05 27.     (N) 076 51 27.     (W)   SCALED
 JV1032* NAVD 88 ORTHO HEIGHT -    50.831 (meters)      166.77  (feet) ADJUSTED
 JV1032  ______________________________________________________________________
 JV1032  GEOID HEIGHT    -        -32.236 (meters)                     GEOID18
 JV1032  DYNAMIC HEIGHT  -         50.804 (meters)      166.68  (feet) COMP
 JV1032  MODELED GRAVITY -    980,096.7   (mgal)                       NAVD 88
 JV1032
 JV1032  VERT ORDER      -  FIRST     CLASS I
 JV1032
 JV1032.The horizontal coordinates were scaled from a map and have
 JV1032.an estimated accuracy of +/- 6 seconds.
 JV1032
 JV1032.The orthometric height was determined by differential leveling and
 JV1032.adjusted by the NATIONAL GEODETIC SURVEY
 JV1032.in June 1991.
 JV1032
 JV1032.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1032.GEOID18 height accuracy estimate available here.
 JV1032
 JV1032.Click photographs - Photos may exist for this station.
 JV1032
 JV1032.The dynamic height is computed by dividing the NAVD 88
 JV1032.geopotential number by the normal gravity value computed on the
 JV1032.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1032.degrees latitude (g = 980.6199 gals.).
 JV1032
 JV1032.The modeled gravity was interpolated from observed gravity values.
 JV1032
 JV1032;                    North         East    Units  Estimated Accuracy
 JV1032;SPC MD       -   158,100.      412,330.      MT  (+/- 180 meters Scaled)
 JV1032
 JV1032_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ393284(NAD 83)
 JV1032
 JV1032                          SUPERSEDED SURVEY CONTROL
 JV1032
 JV1032  NGVD 29 (11/26/84)   51.059  (m)          167.52   (f) ADJUSTED    1 1
 JV1032
 JV1032.Superseded values are not recommended for survey control.
 JV1032
 JV1032.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1032.See file dsdata.pdf to determine how the superseded data were derived.
 JV1032
 JV1032_MARKER: DD = SURVEY DISK
 JV1032_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1032_SP_SET: BRIDGE
 JV1032_STAMPING: 1914
 JV1032_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1032
 JV1032  HISTORY     - Date     Condition        Report By
 JV1032  HISTORY     - UNK      MONUMENTED       WSSC
 JV1032  HISTORY     - 1939     GOOD             WSSC
 JV1032  HISTORY     - 1971     GOOD             NGS
 JV1032
 JV1032                          STATION DESCRIPTION
 JV1032
 JV1032'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1032'0.8 MI S FROM LAUREL.
 JV1032'ON U.S. HIGHWAY 1, ABOUT 400 FEET SOUTH OF THE INTERSECTION OF
 JV1032'CHERRY LANE, AT A BRIDGE OVER BEAR BRANCH, AND IN THE NORTHEAST
 JV1032'WING WALL.
 JV1032
 JV1032                          STATION RECOVERY (1971)
 JV1032
 JV1032'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1032'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1071 ***********************************************************************
 JV1071  DESIGNATION -  1917
 JV1071  PID         -  JV1071
 JV1071  STATE/COUNTY-  MD/HOWARD
 JV1071  COUNTRY     -  US
 JV1071  USGS QUAD   -  CLARKSVILLE (2016)
 JV1071
 JV1071                         *CURRENT SURVEY CONTROL
 JV1071  ______________________________________________________________________
 JV1071* NAD 83(1986) POSITION- 39 10 41.9    (N) 076 57 29.5    (W)   HD_HELD2
 JV1071* NAVD 88 ORTHO HEIGHT -   161.99  (+/-2cm)      531.5   (feet) VERTCON3
 JV1071  ______________________________________________________________________
 JV1071  GEOID HEIGHT    -        -32.004 (meters)                     GEOID18
 JV1071  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1071
 JV1071.The horizontal coordinates were established by autonomous hand held GPS
 JV1071.observations and have an estimated accuracy of +/- 10 meters.
 JV1071
 JV1071.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1071.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1071
 JV1071.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1071.GEOID18 height accuracy estimate available here.
 JV1071
 JV1071.The vertical order pertains to the NGVD 29 superseded value.
 JV1071
 JV1071.Click photographs - Photos may exist for this station.
 JV1071
 JV1071;                    North         East    Units  Estimated Accuracy
 JV1071;SPC MD       -   167,801.      403,612.      MT  (+/- 10 meters HH2 GPS)
 JV1071
 JV1071_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3085638390(NAD 83)
 JV1071
 JV1071                          SUPERSEDED SURVEY CONTROL
 JV1071
 JV1071  NGVD 29 (11/26/84)  162.203  (m)          532.16   (f) ADJUSTED    2 0
 JV1071
 JV1071.Superseded values are not recommended for survey control.
 JV1071
 JV1071.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1071.See file dsdata.pdf to determine how the superseded data were derived.
 JV1071
 JV1071_MARKER: DD = SURVEY DISK
 JV1071_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1071_STAMPING: 1917
 JV1071_MARK LOGO: WSSC
 JV1071_MAGNETIC: P = MARKER IS A STEEL PIPE
 JV1071_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1071
 JV1071  HISTORY     - Date     Condition        Report By
 JV1071  HISTORY     - UNK      MONUMENTED       WSSC
 JV1071  HISTORY     - 1939     GOOD             WSSC
 JV1071  HISTORY     - 20210619 GOOD             PROFLN
 JV1071
 JV1071                          STATION DESCRIPTION
 JV1071
 JV1071'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1071'AT HIGHLAND.
 JV1071'ON THE ASHTON ROAD (U.S. HIGHWAY 29), 300 FEET SOUTH OF THE MAIN
 JV1071'INTERSECTION, ACROSS THE ROAD FROM A CHURCH, 59.5 FEET EAST OF
 JV1071'THE CENTERLINE OF THE ROAD, 57.5 FEET SOUTHWEST OF THE SOUTHWEST
 JV1071'CORNER OF A HOUSE, 22.1 FEET SOUTH OF A 30-INCH GUM TREE, 16.4
 JV1071'FEET SOUTHWEST OF A 10-INCH MAPLE TREE, AND 2 FEET SOUTH OF A
 JV1071'FENCE.
 JV1071
 JV1071                          STATION RECOVERY (2021)
 JV1071
 JV1071'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV1071'THE MARK WAS RECOVERED WITH THE HELP OF THE BENCH MARK RECORD (SKETCH)
 JV1071'PREPARED BY WSSC.  STATEMENTS IN THE NATIONAL GEODETIC SURVEY
 JV1071'DESCRIPTION TO BEING ON U.S. HIGHWAY 29 AND ACROSS THE ROAD FROM A
 JV1071'CHURCH ARE NO LONGER VALID AND PROBABLY NEVER WERE.
 JV1071'
 JV1071'THE MARK SCALES ABOUT 330 FT (100.6 M) SOUTHWEST ALONG RIGHT 108 FROM
 JV1071'THE INTERSECTION OF RIGHT 108 AND RIGHT 216 IN HIGHLAND, IN THE RIGHT
 JV1071'FRONT YARD OF LOG HOUSE NUMBER 13475.  IT IS 58 FT (17.7 M) SOUTHEAST
 JV1071'OF RIGHT 108, 57.5 FT (17.5 M) WEST-NORTHWEST OF THE WESTERLY OR FRONT
 JV1071'RIGHT CORNER OF THE LOG HOUSE, 29 FT (8.8 M) SOUTHEAST OF A FENCE POST
 JV1071'AT AN ANGLE CORNER OF A BOARD FENCE, 21 FT (6.4 M) SOUTHWEST OF THE
 JV1071'FACE OF A 36 INCH (91 CM) GUM TREE, 2 FT (0.6 M) NORTHEAST OF THE
 JV1071'BOARD FENCE AND FLUSH WITH OR JUST SLIGHTLY BELOW SURROUNDING GRASS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0996 ***********************************************************************
 JV0996  DESIGNATION -  1920 WSSC
 JV0996  PID         -  JV0996
 JV0996  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0996  COUNTRY     -  US
 JV0996  USGS QUAD   -  BELTSVILLE (2016)
 JV0996
 JV0996                         *CURRENT SURVEY CONTROL
 JV0996  ______________________________________________________________________
 JV0996* NAD 83(1986) POSITION- 39 00 04.     (N) 076 58 55.     (W)   SCALED
 JV0996* NAVD 88 ORTHO HEIGHT -    37.087 (meters)      121.68  (feet) ADJUSTED
 JV0996  ______________________________________________________________________
 JV0996  GEOID HEIGHT    -        -32.039 (meters)                     GEOID18
 JV0996  DYNAMIC HEIGHT  -         37.068 (meters)      121.61  (feet) COMP
 JV0996  MODELED GRAVITY -    980,097.9   (mgal)                       NAVD 88
 JV0996
 JV0996  VERT ORDER      -  SECOND    CLASS 0
 JV0996
 JV0996.The horizontal coordinates were scaled from a map and have
 JV0996.an estimated accuracy of +/- 6 seconds.
 JV0996
 JV0996.The orthometric height was determined by differential leveling and
 JV0996.adjusted by the NATIONAL GEODETIC SURVEY
 JV0996.in June 1991.
 JV0996
 JV0996.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0996.GEOID18 height accuracy estimate available here.
 JV0996
 JV0996.Click photographs - Photos may exist for this station.
 JV0996
 JV0996.The dynamic height is computed by dividing the NAVD 88
 JV0996.geopotential number by the normal gravity value computed on the
 JV0996.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0996.degrees latitude (g = 980.6199 gals.).
 JV0996
 JV0996.The modeled gravity was interpolated from observed gravity values.
 JV0996
 JV0996;                    North         East    Units  Estimated Accuracy
 JV0996;SPC MD       -   148,130.      401,560.      MT  (+/- 180 meters Scaled)
 JV0996
 JV0996_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ283187(NAD 83)
 JV0996
 JV0996                          SUPERSEDED SURVEY CONTROL
 JV0996
 JV0996  NGVD 29 (11/26/84)   37.304  (m)          122.39   (f) ADJUSTED    2 0
 JV0996
 JV0996.Superseded values are not recommended for survey control.
 JV0996
 JV0996.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0996.See file dsdata.pdf to determine how the superseded data were derived.
 JV0996
 JV0996_MARKER: DD = SURVEY DISK
 JV0996_SETTING: 0 = UNSPECIFIED SETTING
 JV0996_STAMPING: 1920
 JV0996_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0996
 JV0996  HISTORY     - Date     Condition        Report By
 JV0996  HISTORY     - UNK      MONUMENTED       WSSC
 JV0996  HISTORY     - 1958     GOOD             CGS
 JV0996
 JV0996                          STATION DESCRIPTION
 JV0996
 JV0996'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0996'0.8 MI N FROM LANGLEY PARK.
 JV0996'ABOUT 0.75 MILES NORTH ALONG NEW HAMPSHIRE AVENUE FROM THE
 JV0996'CITIZENS NATIONAL BANK AT LANGLEY PARK, NEAR THE JUNCTION OF
 JV0996'STATE HIGHWAY 320, NEAR THE NORTH END OF THE EAST CONCRETE
 JV0996'HEADWALL OF A VERY LARGE CULVERT CARRYING NORTH WEST BRANCH CREEK
 JV0996'UNDER THE AVENUE, 46.7 FEET EAST OF THE CENTERLINE OF THE
 JV0996'NORTHBOUND LANE OF THE AVENUE, 8.2 FEET SOUTH OF THE NORTH END
 JV0996'OF THE HEADWALL AND ABOUT 12 FEET BELOW THE LEVEL OF THE AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2653 ***********************************************************************
 JV2653  DESIGNATION -  1922 A WSSC
 JV2653  PID         -  JV2653
 JV2653  STATE/COUNTY-  MD/HOWARD
 JV2653  COUNTRY     -  US
 JV2653  USGS QUAD   -  SANDY SPRING (2016)
 JV2653
 JV2653                         *CURRENT SURVEY CONTROL
 JV2653  ______________________________________________________________________
 JV2653* NAD 83(1986) POSITION- 39 14 33.     (N) 077 03 17.     (W)   SCALED
 JV2653* NAVD 88 ORTHO HEIGHT -   142.35  (+/-2cm)      467.0   (feet) VERTCON3
 JV2653  ______________________________________________________________________
 JV2653  GEOID HEIGHT    -        -31.842 (meters)                     GEOID18
 JV2653  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2653
 JV2653.The horizontal coordinates were scaled from a map and have
 JV2653.an estimated accuracy of +/- 6 seconds.
 JV2653
 JV2653.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2653.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2653
 JV2653.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2653.GEOID18 height accuracy estimate available here.
 JV2653
 JV2653.The vertical order pertains to the NGVD 29 superseded value.
 JV2653
 JV2653.Click photographs - Photos may exist for this station.
 JV2653
 JV2653;                    North         East    Units  Estimated Accuracy
 JV2653;SPC MD       -   174,930.      395,280.      MT  (+/- 180 meters Scaled)
 JV2653
 JV2653_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ226456(NAD 83)
 JV2653
 JV2653                          SUPERSEDED SURVEY CONTROL
 JV2653
 JV2653  NGVD 29 (11/26/84)  142.552  (m)          467.69   (f) ADJUSTED    2 0
 JV2653
 JV2653.Superseded values are not recommended for survey control.
 JV2653
 JV2653.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2653.See file dsdata.pdf to determine how the superseded data were derived.
 JV2653
 JV2653_MARKER: Q = CHISELED SQUARE
 JV2653_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2653_SP_SET: CULVERT
 JV2653_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2653
 JV2653  HISTORY     - Date     Condition        Report By
 JV2653  HISTORY     - UNK      MONUMENTED       WSSC
 JV2653  HISTORY     - 1944     GOOD             WSSC
 JV2653
 JV2653                          STATION DESCRIPTION
 JV2653
 JV2653'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2653'1.4 MI N FROM SUNSHINE.
 JV2653'ON THE SUNSHINE COOKSVILLE ROAD (STATE HIGHWAY 97), 0.3 MILE NORTH
 JV2653'OF PATUXENT RIVER, ON THE EAST SIDE OF THE ROAD, AT A CONCRETE
 JV2653'CULVERT UNDER THE ROAD, AND ON THE NORTH END OF THE EAST HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2654 ***********************************************************************
 JV2654  DESIGNATION -  1922 B WSSC
 JV2654  PID         -  JV2654
 JV2654  STATE/COUNTY-  MD/HOWARD
 JV2654  COUNTRY     -  US
 JV2654  USGS QUAD   -  SANDY SPRING (2016)
 JV2654
 JV2654                         *CURRENT SURVEY CONTROL
 JV2654  ______________________________________________________________________
 JV2654* NAD 83(1986) POSITION- 39 14 58.     (N) 077 03 21.     (W)   SCALED
 JV2654* NAVD 88 ORTHO HEIGHT -   150.68  (+/-2cm)      494.4   (feet) VERTCON3
 JV2654  ______________________________________________________________________
 JV2654  GEOID HEIGHT    -        -31.842 (meters)                     GEOID18
 JV2654  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2654
 JV2654.The horizontal coordinates were scaled from a map and have
 JV2654.an estimated accuracy of +/- 6 seconds.
 JV2654
 JV2654.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2654.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2654
 JV2654.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2654.GEOID18 height accuracy estimate available here.
 JV2654
 JV2654.The vertical order pertains to the NGVD 29 superseded value.
 JV2654
 JV2654.Click photographs - Photos may exist for this station.
 JV2654
 JV2654;                    North         East    Units  Estimated Accuracy
 JV2654;SPC MD       -   175,700.      395,180.      MT  (+/- 180 meters Scaled)
 JV2654
 JV2654_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ226464(NAD 83)
 JV2654
 JV2654                          SUPERSEDED SURVEY CONTROL
 JV2654
 JV2654  NGVD 29 (11/26/84)  150.885  (m)          495.03   (f) ADJUSTED    2 0
 JV2654
 JV2654.Superseded values are not recommended for survey control.
 JV2654
 JV2654.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2654.See file dsdata.pdf to determine how the superseded data were derived.
 JV2654
 JV2654_MARKER: Z = SEE DESCRIPTION
 JV2654_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2654_SP_SET: TREE
 JV2654_STAMPING: WSSC 1922B
 JV2654_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2654
 JV2654  HISTORY     - Date     Condition        Report By
 JV2654  HISTORY     - UNK      MONUMENTED       WSSC
 JV2654  HISTORY     - 1944     GOOD             WSSC
 JV2654
 JV2654                          STATION DESCRIPTION
 JV2654
 JV2654'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2654'2 MI N FROM SUNSHINE.
 JV2654'ON THE SUNSHINE-COOKSVILLE ROAD (STATE HIGHWAY 97), 0.5 MILE SOUTH
 JV2654'OF CATTAIL CREEK, ON THE WEST SIDE OF THE ROAD, IN THE WOODS,
 JV2654'AND IN THE EAST SIDE OF A 12-INCH OAK TREE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2655 ***********************************************************************
 JV2655  DESIGNATION -  1922 C WSSC
 JV2655  PID         -  JV2655
 JV2655  STATE/COUNTY-  MD/HOWARD
 JV2655  COUNTRY     -  US
 JV2655  USGS QUAD   -  WOODBINE (2016)
 JV2655
 JV2655                         *CURRENT SURVEY CONTROL
 JV2655  ______________________________________________________________________
 JV2655* NAD 83(1986) POSITION- 39 15 04.     (N) 077 03 20.     (W)   SCALED
 JV2655* NAVD 88 ORTHO HEIGHT -   138.58  (+/-2cm)      454.7   (feet) VERTCON3
 JV2655  ______________________________________________________________________
 JV2655  GEOID HEIGHT    -        -31.842 (meters)                     GEOID18
 JV2655  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2655
 JV2655.The horizontal coordinates were scaled from a map and have
 JV2655.an estimated accuracy of +/- 6 seconds.
 JV2655
 JV2655.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2655.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2655
 JV2655.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2655.GEOID18 height accuracy estimate available here.
 JV2655
 JV2655.The vertical order pertains to the NGVD 29 superseded value.
 JV2655
 JV2655.Click photographs - Photos may exist for this station.
 JV2655
 JV2655;                    North         East    Units  Estimated Accuracy
 JV2655;SPC MD       -   175,880.      395,210.      MT  (+/- 180 meters Scaled)
 JV2655
 JV2655_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ226466(NAD 83)
 JV2655
 JV2655                          SUPERSEDED SURVEY CONTROL
 JV2655
 JV2655  NGVD 29 (11/26/84)  138.783  (m)          455.32   (f) ADJUSTED    2 0
 JV2655
 JV2655.Superseded values are not recommended for survey control.
 JV2655
 JV2655.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2655.See file dsdata.pdf to determine how the superseded data were derived.
 JV2655
 JV2655_MARKER: Q = CHISELED SQUARE
 JV2655_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2655_SP_SET: CULVERT
 JV2655_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2655
 JV2655  HISTORY     - Date     Condition        Report By
 JV2655  HISTORY     - UNK      MONUMENTED       WSSC
 JV2655  HISTORY     - 1944     GOOD             WSSC
 JV2655
 JV2655                          STATION DESCRIPTION
 JV2655
 JV2655'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2655'2 MI N FROM SUNSHINE.
 JV2655'ON THE SUNSHINE-COOKSVILLE ROAD (STATE HIGHWAY 97), 0.4 MILE SOUTH
 JV2655'OF CATTAIL CREEK, ON THE WEST SIDE OF THE ROAD, AT A CONCRETE
 JV2655'CULVERT UNDER THE ROAD, AND ON THE NORTHWEST CORNER OF THE
 JV2655'HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2652 ***********************************************************************
 JV2652  DESIGNATION -  1922 WSSC
 JV2652  PID         -  JV2652
 JV2652  STATE/COUNTY-  MD/HOWARD
 JV2652  COUNTRY     -  US
 JV2652  USGS QUAD   -  SANDY SPRING (2016)
 JV2652
 JV2652                         *CURRENT SURVEY CONTROL
 JV2652  ______________________________________________________________________
 JV2652* NAD 83(1986) POSITION- 39 14 18.     (N) 077 03 21.     (W)   SCALED
 JV2652* NAVD 88 ORTHO HEIGHT -   116.32  (+/-2cm)      381.6   (feet) VERTCON3
 JV2652  ______________________________________________________________________
 JV2652  GEOID HEIGHT    -        -31.840 (meters)                     GEOID18
 JV2652  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2652
 JV2652.The horizontal coordinates were scaled from a map and have
 JV2652.an estimated accuracy of +/- 6 seconds.
 JV2652
 JV2652.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2652.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2652
 JV2652.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2652.GEOID18 height accuracy estimate available here.
 JV2652
 JV2652.The vertical order pertains to the NGVD 29 superseded value.
 JV2652
 JV2652.Click photographs - Photos may exist for this station.
 JV2652
 JV2652;                    North         East    Units  Estimated Accuracy
 JV2652;SPC MD       -   174,470.      395,180.      MT  (+/- 180 meters Scaled)
 JV2652
 JV2652_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ225452(NAD 83)
 JV2652
 JV2652                          SUPERSEDED SURVEY CONTROL
 JV2652
 JV2652  NGVD 29 (11/26/84)  116.518  (m)          382.28   (f) ADJUSTED    2 0
 JV2652
 JV2652.Superseded values are not recommended for survey control.
 JV2652
 JV2652.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2652.See file dsdata.pdf to determine how the superseded data were derived.
 JV2652
 JV2652_MARKER: DD = SURVEY DISK
 JV2652_SETTING: 65 = SET IN UNSPECIFIED ROCK OR BOULDER
 JV2652_SP_SET: UNSPECIFIED ROCK
 JV2652_STAMPING: 1922
 JV2652_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2652
 JV2652  HISTORY     - Date     Condition        Report By
 JV2652  HISTORY     - UNK      MONUMENTED       WSSC
 JV2652  HISTORY     - 1944     GOOD             WSSC
 JV2652
 JV2652                          STATION DESCRIPTION
 JV2652
 JV2652'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2652'1.1 MI N FROM SUNSHINE.
 JV2652'ON THE SUNSHINE-ROXBURY MILLS ROAD (STATE HIGHWAY 97), ABOUT
 JV2652'100 FEET NORTH OF PATUXENT RIVER, 100 FEET EAST OF THE CENTERLINE
 JV2652'OF THE ROAD, AND IN THE TOP OF A LARGE ROCK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1087 ***********************************************************************
 JV1087  DESIGNATION -  1923 WSSC
 JV1087  PID         -  JV1087
 JV1087  STATE/COUNTY-  MD/HOWARD
 JV1087  COUNTRY     -  US
 JV1087  USGS QUAD   -  CLARKSVILLE (2016)
 JV1087
 JV1087                         *CURRENT SURVEY CONTROL
 JV1087  ______________________________________________________________________
 JV1087* NAD 83(1986) POSITION- 39 10 01.     (N) 076 56 38.     (W)   SCALED
 JV1087* NAVD 88 ORTHO HEIGHT -   158.61  (+/-2cm)      520.4   (feet) VERTCON3
 JV1087  ______________________________________________________________________
 JV1087  GEOID HEIGHT    -        -32.033 (meters)                     GEOID18
 JV1087  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1087
 JV1087.The horizontal coordinates were scaled from a map and have
 JV1087.an estimated accuracy of +/- 6 seconds.
 JV1087
 JV1087.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1087.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1087
 JV1087.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1087.GEOID18 height accuracy estimate available here.
 JV1087
 JV1087.The vertical order pertains to the NGVD 29 superseded value.
 JV1087
 JV1087.Click photographs - Photos may exist for this station.
 JV1087
 JV1087;                    North         East    Units  Estimated Accuracy
 JV1087;SPC MD       -   166,540.      404,850.      MT  (+/- 180 meters Scaled)
 JV1087
 JV1087_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ320371(NAD 83)
 JV1087
 JV1087                          SUPERSEDED SURVEY CONTROL
 JV1087
 JV1087  NGVD 29 (11/26/84)  158.822  (m)          521.07   (f) ADJUSTED    2 0
 JV1087
 JV1087.Superseded values are not recommended for survey control.
 JV1087
 JV1087.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1087.See file dsdata.pdf to determine how the superseded data were derived.
 JV1087
 JV1087_MARKER: DD = SURVEY DISK
 JV1087_SETTING: 0 = UNSPECIFIED SETTING
 JV1087_SP_SET: IRON PIPE
 JV1087_STAMPING: 1923
 JV1087_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1087
 JV1087  HISTORY     - Date     Condition        Report By
 JV1087  HISTORY     - UNK      MONUMENTED       WSSC
 JV1087  HISTORY     - 1939     GOOD             WSSC
 JV1087  HISTORY     - 20041006 MARK NOT FOUND   GEOCAC
 JV1087
 JV1087                          STATION DESCRIPTION
 JV1087
 JV1087'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1087'1.2 MI SE FROM HIGHLAND.
 JV1087'ABOUT 1.2 MILES SOUTHEAST ALONG THE LAUREL-HIGHLAND ROAD FROM
 JV1087'HIGHLAND, HOWARD COUNTY, AT THE INTERSECTION OF THE
 JV1087'CLARKSVILLE-EDNOR ROAD, AT MT. ZION METHODIST CHURCH, 62 FEET
 JV1087'SOUTHEAST OF THE SOUTHEAST CORNER OF A SHED, 22 FEET NORTH OF
 JV1087'THE NORTHEAST CORNER OF THE CHURCH, 36.6 FEET SOUTHWEST OF A
 JV1087'20-INCH OAK TREE, AND 23 FEET NORTH OF ANOTHER 20-INCH OAK TREE.
 JV1087'A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED
 JV1087'1923 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1087
 JV1087                          STATION RECOVERY (2004)
 JV1087
 JV1087'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV1087'A NEW, LARGE CHURCH BUILDING WAS ERECTED ON THE SITE IN 1962, AND TWO
 JV1087'ADDITIONS TO THE BUILDING WERE ERECTED IN 1985 AND 2004.  THE AREA
 JV1087'NORTH OF THE NEW CHURCH COMPLEX IS A PAVED PARKING LOT.  THERE IS NO
 JV1087'SHED IN THE VICINITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1467 ***********************************************************************
 JV1467  DESIGNATION -  1926
 JV1467  PID         -  JV1467
 JV1467  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1467  COUNTRY     -  US
 JV1467  USGS QUAD   -  BELTSVILLE (2016)
 JV1467
 JV1467                         *CURRENT SURVEY CONTROL
 JV1467  ______________________________________________________________________
 JV1467* NAD 83(1986) POSITION- 39 02 44.     (N) 076 56 23.     (W)   SCALED
 JV1467* NAVD 88 ORTHO HEIGHT -    62.404 (meters)      204.74  (feet) ADJUSTED
 JV1467  ______________________________________________________________________
 JV1467  GEOID HEIGHT    -        -32.088 (meters)                     GEOID18
 JV1467  DYNAMIC HEIGHT  -         62.371 (meters)      204.63  (feet) COMP
 JV1467  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 JV1467
 JV1467  VERT ORDER      -  SECOND    CLASS 0
 JV1467
 JV1467.The horizontal coordinates were scaled from a map and have
 JV1467.an estimated accuracy of +/- 6 seconds.
 JV1467
 JV1467.The orthometric height was determined by differential leveling and
 JV1467.adjusted by the NATIONAL GEODETIC SURVEY
 JV1467.in June 1991.
 JV1467
 JV1467.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1467.GEOID18 height accuracy estimate available here.
 JV1467
 JV1467.Click photographs - Photos may exist for this station.
 JV1467
 JV1467.The dynamic height is computed by dividing the NAVD 88
 JV1467.geopotential number by the normal gravity value computed on the
 JV1467.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1467.degrees latitude (g = 980.6199 gals.).
 JV1467
 JV1467.The modeled gravity was interpolated from observed gravity values.
 JV1467
 JV1467;                    North         East    Units  Estimated Accuracy
 JV1467;SPC MD       -   153,070.      405,220.      MT  (+/- 180 meters Scaled)
 JV1467
 JV1467_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ321236(NAD 83)
 JV1467
 JV1467                          SUPERSEDED SURVEY CONTROL
 JV1467
 JV1467  NGVD 29 (11/26/84)   62.618  (m)          205.44   (f) ADJUSTED    2 0
 JV1467
 JV1467.Superseded values are not recommended for survey control.
 JV1467
 JV1467.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1467.See file dsdata.pdf to determine how the superseded data were derived.
 JV1467
 JV1467_MARKER: B = BOLT
 JV1467_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1467_SP_SET: CULVERT
 JV1467_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1467
 JV1467  HISTORY     - Date     Condition        Report By
 JV1467  HISTORY     - UNK      MONUMENTED       WSSC
 JV1467  HISTORY     - 1951     GOOD             CGS
 JV1467  HISTORY     - 20020130 MARK NOT FOUND   MDSHA
 JV1467
 JV1467                          STATION DESCRIPTION
 JV1467
 JV1467'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1467'0.7 MI NE FROM POWDER MILL ESTATES.
 JV1467'ABOUT 0.7 MILE NORTHEAST ALONG POWDER MILL ROAD (STATE HIGHWAY
 JV1467'212), FROM THE JUNCTION OF CHERRY HILL ROAD AT POWDER MILL
 JV1467'ESTATES, PRINCE GEORGES COUNTY, AT A LARGE CULVERT, 28.9 FEET
 JV1467'SOUTH OF THE ROAD, IN THE SOUTH HEADWALL, AND 1.8 FEET EAST OF
 JV1467'THE WEST END.
 JV1467
 JV1467                          STATION RECOVERY (2002)
 JV1467
 JV1467'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV1467'THE STATION WAS SEARCHED FOR AND NOT RECOVERED. A NEW BOX CULVERT WAS
 JV1467'BUILT AT THE DESCRIBED LOCATION IN 1969.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2639 ***********************************************************************
 JV2639  DESIGNATION -  1927
 JV2639  PID         -  JV2639
 JV2639  STATE/COUNTY-  MD/MONTGOMERY
 JV2639  COUNTRY     -  US
 JV2639  USGS QUAD   -  SANDY SPRING (2016)
 JV2639
 JV2639                         *CURRENT SURVEY CONTROL
 JV2639  ______________________________________________________________________
 JV2639* NAD 83(1986) POSITION- 39 10 28.50   (N) 077 01 17.83   (W)   HD_HELD1
 JV2639* NAVD 88 ORTHO HEIGHT -    95.63  (+/-2cm)      313.7   (feet) VERTCON3
 JV2639  ______________________________________________________________________
 JV2639  GEOID HEIGHT    -        -31.895 (meters)                     GEOID18
 JV2639  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2639
 JV2639.The horizontal coordinates were determined by differentially corrected
 JV2639.hand held GPS observations or other comparable positioning techniques
 JV2639.and have an estimated accuracy of +/- 3 meters.
 JV2639
 JV2639.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2639.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2639
 JV2639.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2639.GEOID18 height accuracy estimate available here.
 JV2639
 JV2639.The vertical order pertains to the NGVD 29 superseded value.
 JV2639
 JV2639.Click photographs - Photos may exist for this station.
 JV2639
 JV2639;                    North         East    Units  Estimated Accuracy
 JV2639;SPC MD       -   167,387.3     398,131.9     MT  (+/- 3 meters HH1 GPS) 
 JV2639
 JV2639_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2536838097(NAD 83)
 JV2639
 JV2639                          SUPERSEDED SURVEY CONTROL
 JV2639
 JV2639  NGVD 29 (11/26/84)   95.846  (m)          314.45   (f) ADJUSTED    2 0
 JV2639
 JV2639.Superseded values are not recommended for survey control.
 JV2639
 JV2639.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2639.See file dsdata.pdf to determine how the superseded data were derived.
 JV2639
 JV2639_MARKER: B = BOLT
 JV2639_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2639_SP_SET: BRIDGE
 JV2639_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2639_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2639+SATELLITE: SATELLITE OBSERVATIONS - December 30, 2008
 JV2639
 JV2639  HISTORY     - Date     Condition        Report By
 JV2639  HISTORY     - UNK      MONUMENTED       WSSC
 JV2639  HISTORY     - 1944     GOOD             WSSC
 JV2639  HISTORY     - 19950816 GOOD             USPSQD
 JV2639  HISTORY     - 20081230 GOOD             NGS
 JV2639
 JV2639                          STATION DESCRIPTION
 JV2639
 JV2639'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2639'0.6 MI N FROM BRINKLOW.
 JV2639'ON THE ASHTON-BRIGHTON ROAD (STATE HIGHWAY 116), AT THE
 JV2639'NORTHEAST CORNER OF THE BRIDGE OVER HAWLINGS RIVER, AND IN
 JV2639'THE TOP OF THE NORTH ABUTMENT.
 JV2639
 JV2639                          STATION RECOVERY (1995)
 JV2639
 JV2639'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2639'RECOVERED IN GOOD CONDITION.
 JV2639
 JV2639                          STATION RECOVERY (2008)
 JV2639
 JV2639'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV2639'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2601 ***********************************************************************
 JV2601  DESIGNATION -  1929 WSSC
 JV2601  PID         -  JV2601
 JV2601  STATE/COUNTY-  MD/MONTGOMERY
 JV2601  COUNTRY     -  US
 JV2601  USGS QUAD   -  GAITHERSBURG (2016)
 JV2601
 JV2601                         *CURRENT SURVEY CONTROL
 JV2601  ______________________________________________________________________
 JV2601* NAD 83(1986) POSITION- 39 10 18.     (N) 077 11 24.     (W)   SCALED
 JV2601* NAVD 88 ORTHO HEIGHT -   118.34  (+/-2cm)      388.3   (feet) VERTCON3
 JV2601  ______________________________________________________________________
 JV2601  GEOID HEIGHT    -        -31.757 (meters)                     GEOID18
 JV2601  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2601
 JV2601.The horizontal coordinates were scaled from a map and have
 JV2601.an estimated accuracy of +/- 6 seconds.
 JV2601
 JV2601.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2601.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2601
 JV2601.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2601.GEOID18 height accuracy estimate available here.
 JV2601
 JV2601.The vertical order pertains to the NGVD 29 superseded value.
 JV2601
 JV2601.Click photographs - Photos may exist for this station.
 JV2601
 JV2601;                    North         East    Units  Estimated Accuracy
 JV2601;SPC MD       -   167,080.      383,580.      MT  (+/- 180 meters Scaled)
 JV2601
 JV2601_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ108381(NAD 83)
 JV2601
 JV2601                          SUPERSEDED SURVEY CONTROL
 JV2601
 JV2601  NGVD 29 (11/26/84)  118.550  (m)          388.94   (f) ADJUSTED    2 0
 JV2601
 JV2601.Superseded values are not recommended for survey control.
 JV2601
 JV2601.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2601.See file dsdata.pdf to determine how the superseded data were derived.
 JV2601
 JV2601_MARKER: B = BOLT
 JV2601_SETTING: 0 = UNSPECIFIED SETTING
 JV2601_SP_SET: IRON PIPE
 JV2601_STAMPING: 1929
 JV2601_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2601
 JV2601  HISTORY     - Date     Condition        Report By
 JV2601  HISTORY     - UNK      MONUMENTED       WSSC
 JV2601  HISTORY     - 1946     GOOD             WSSC
 JV2601
 JV2601                          STATION DESCRIPTION
 JV2601
 JV2601'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2601'2 MI N FROM GAITHERSBURG.
 JV2601'ABOUT 2 MILES NORTH ALONG THE GOSHEN-GAITHERSBURG ROAD FROM
 JV2601'GAITHERSBURG, MONTGOMERY COUNTY, 65 FEET SOUTH OF CABIN BRANCH,
 JV2601'NEAR THE BRIDGE OVER THE STREAM, 60.5 FEET SOUTH OF THE SOUTHWEST
 JV2601'CORNER OF THE BRIDGE, 56.5 FEET SOUTHWEST OF THE SOUTHEAST CORNER,
 JV2601'38.4 FEET WEST OF A POLE, 17.8 FEET NORTH OF ANOTHER POLE, AND
 JV2601'18.6 FEET WEST OF THE CENTER LINE OF THE ROAD.  A WASHINGTON
 JV2601'SUBURBAN SANITARY DISTRICT BRASS BOLT AND WASHER, STAMPED 1929
 JV2601'AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2592 ***********************************************************************
 JV2592  DESIGNATION -  1931 WSSC
 JV2592  PID         -  JV2592
 JV2592  STATE/COUNTY-  MD/MONTGOMERY
 JV2592  COUNTRY     -  US
 JV2592  USGS QUAD   -  DAMASCUS (2016)
 JV2592
 JV2592                         *CURRENT SURVEY CONTROL
 JV2592  ______________________________________________________________________
 JV2592* NAD 83(1986) POSITION- 39 15 10.     (N) 077 08 20.     (W)   SCALED
 JV2592* NAVD 88 ORTHO HEIGHT -   192.247 (meters)      630.73  (feet) ADJUSTED
 JV2592  ______________________________________________________________________
 JV2592  GEOID HEIGHT    -        -31.792 (meters)                     GEOID18
 JV2592  DYNAMIC HEIGHT  -        192.148 (meters)      630.41  (feet) COMP
 JV2592  MODELED GRAVITY -    980,104.4   (mgal)                       NAVD 88
 JV2592
 JV2592  VERT ORDER      -  SECOND    CLASS 0
 JV2592
 JV2592.The horizontal coordinates were scaled from a map and have
 JV2592.an estimated accuracy of +/- 6 seconds.
 JV2592
 JV2592.The orthometric height was determined by differential leveling and
 JV2592.adjusted by the NATIONAL GEODETIC SURVEY
 JV2592.in June 1991.
 JV2592
 JV2592.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2592.GEOID18 height accuracy estimate available here.
 JV2592
 JV2592.Click photographs - Photos may exist for this station.
 JV2592
 JV2592.The dynamic height is computed by dividing the NAVD 88
 JV2592.geopotential number by the normal gravity value computed on the
 JV2592.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2592.degrees latitude (g = 980.6199 gals.).
 JV2592
 JV2592.The modeled gravity was interpolated from observed gravity values.
 JV2592
 JV2592;                    North         East    Units  Estimated Accuracy
 JV2592;SPC MD       -   176,080.      388,010.      MT  (+/- 180 meters Scaled)
 JV2592
 JV2592_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ154470(NAD 83)
 JV2592
 JV2592                          SUPERSEDED SURVEY CONTROL
 JV2592
 JV2592  NGVD 29 (11/26/84)  192.457  (m)          631.42   (f) ADJUSTED    2 0
 JV2592
 JV2592.Superseded values are not recommended for survey control.
 JV2592
 JV2592.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2592.See file dsdata.pdf to determine how the superseded data were derived.
 JV2592
 JV2592_MARKER: B = BOLT
 JV2592_SETTING: 0 = UNSPECIFIED SETTING
 JV2592_SP_SET: IRON PIPE
 JV2592_STAMPING: 1931
 JV2592_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2592
 JV2592  HISTORY     - Date     Condition        Report By
 JV2592  HISTORY     - UNK      MONUMENTED       WSSC
 JV2592  HISTORY     - 1946     GOOD             WSSC
 JV2592
 JV2592                          STATION DESCRIPTION
 JV2592
 JV2592'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2592'0.3 MI SE FROM ETCHISON.
 JV2592'ABOUT 0.3 MILE SOUTHEAST ALONG THE UNITY-ETCHISON ROAD FROM THE
 JV2592'GENERAL STORE AT ETCHISON, MONTGOMERY COUNTY, AT THE INTERSECTION
 JV2592'OF THE DAISY-ETCHISON ROAD, 65.8 FEET NORTHEAST OF THE CENTER
 JV2592'LINE OF THE UNITY-ETCHISON ROAD, 21.3 FEET NORTHWEST OF THE
 JV2592'CENTER LINE OF THE DAISY-ETCHISON ROAD, 58.1 FEET SOUTHWEST OF A
 JV2592'36-INCH OAK TREE, 17.4 FEET SOUTHEAST OF A 24-INCH OAK TREE, AND
 JV2592'8 FEET NORTHEAST OF AN 18-INCH OAK TREE.  A WASHINGTON SUBURBAN
 JV2592'SANITARY DISTRICT BRASS BOLT AND WASHER, STAMPED 1931 AND SET
 JV2592'IN THE TOP OF AN IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1294 ***********************************************************************
 HV1294  DESIGNATION -  1932 WSSC
 HV1294  PID         -  HV1294
 HV1294  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1294  COUNTRY     -  US
 HV1294  USGS QUAD   -  LANHAM (2016)
 HV1294
 HV1294                         *CURRENT SURVEY CONTROL
 HV1294  ______________________________________________________________________
 HV1294* NAD 83(1986) POSITION- 38 59 32.     (N) 076 50 34.     (W)   SCALED
 HV1294* NAVD 88 ORTHO HEIGHT -    54.59  (+/-2cm)      179.1   (feet) VERTCON3
 HV1294  ______________________________________________________________________
 HV1294  GEOID HEIGHT    -        -32.366 (meters)                     GEOID18
 HV1294  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1294
 HV1294.The horizontal coordinates were scaled from a map and have
 HV1294.an estimated accuracy of +/- 6 seconds.
 HV1294
 HV1294.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1294.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1294
 HV1294.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1294.GEOID18 height accuracy estimate available here.
 HV1294
 HV1294.The vertical order pertains to the NGVD 29 superseded value.
 HV1294
 HV1294.Click photographs - Photos may exist for this station.
 HV1294
 HV1294;                    North         East    Units  Estimated Accuracy
 HV1294;SPC MD       -   147,160.      413,620.      MT  (+/- 180 meters Scaled)
 HV1294
 HV1294_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ404175(NAD 83)
 HV1294
 HV1294                          SUPERSEDED SURVEY CONTROL
 HV1294
 HV1294  NGVD 29 (11/26/84)   54.813  (m)          179.83   (f) ADJUSTED    2 0
 HV1294
 HV1294.Superseded values are not recommended for survey control.
 HV1294
 HV1294.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1294.See file dsdata.pdf to determine how the superseded data were derived.
 HV1294
 HV1294_MARKER: B = BOLT
 HV1294_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1294_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1294
 HV1294  HISTORY     - Date     Condition        Report By
 HV1294  HISTORY     - UNK      MONUMENTED       WSSC
 HV1294  HISTORY     - 1944     GOOD             WSSC
 HV1294
 HV1294                          STATION DESCRIPTION
 HV1294
 HV1294'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1294'1.5 MI W FROM GLENN DALE.
 HV1294'ON THE BRANCHVILLE-GLENN DALE ROAD, 0.3 MILE WEST OF TELEGRAPH
 HV1294'ROAD, AT THE Y-JUNCTION OF THE BELTSVILLE ROAD, AND IN THE
 HV1294'TRIANGLE FORMED BY THE JUNCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2706 ***********************************************************************
 JV2706  DESIGNATION -  1941
 JV2706  PID         -  JV2706
 JV2706  STATE/COUNTY-  MD/MONTGOMERY
 JV2706  COUNTRY     -  US
 JV2706  USGS QUAD   -  ROCKVILLE (2016)
 JV2706
 JV2706                         *CURRENT SURVEY CONTROL
 JV2706  ______________________________________________________________________
 JV2706* NAD 83(1986) POSITION- 39 05 03.53   (N) 077 07 38.73   (W)   HD_HELD1
 JV2706* NAVD 88 ORTHO HEIGHT -    82.29  (+/-2cm)      270.0   (feet) VERTCON3
 JV2706  ______________________________________________________________________
 JV2706  GEOID HEIGHT    -        -31.752 (meters)                     GEOID18
 JV2706  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2706
 JV2706.The horizontal coordinates were determined by differentially corrected
 JV2706.hand held GPS observations or other comparable positioning techniques
 JV2706.and have an estimated accuracy of +/- 3 meters.
 JV2706
 JV2706.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2706.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2706
 JV2706.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2706.GEOID18 height accuracy estimate available here.
 JV2706
 JV2706.The vertical order pertains to the NGVD 29 superseded value.
 JV2706
 JV2706.Click photographs - Photos may exist for this station.
 JV2706
 JV2706;                    North         East    Units  Estimated Accuracy
 JV2706;SPC MD       -   157,373.7     388,975.2     MT  (+/- 3 meters HH1 GPS) 
 JV2706
 JV2706_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1599228287(NAD 83)
 JV2706
 JV2706                          SUPERSEDED SURVEY CONTROL
 JV2706
 JV2706  NGVD 29 (11/26/84)   82.505  (m)          270.69   (f) ADJUSTED    2 0
 JV2706
 JV2706.Superseded values are not recommended for survey control.
 JV2706
 JV2706.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2706.See file dsdata.pdf to determine how the superseded data were derived.
 JV2706
 JV2706_MARKER: B = BOLT
 JV2706_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2706_SP_SET: BRIDGE WINGWALL
 JV2706_STAMPING: WSSC 1941
 JV2706_MARK LOGO: NONE
 JV2706_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2706_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2706_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2706+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV2706
 JV2706  HISTORY     - Date     Condition        Report By
 JV2706  HISTORY     - UNK      MONUMENTED       WSSC
 JV2706  HISTORY     - 1939     GOOD             WSSC
 JV2706  HISTORY     - 1985     GOOD             USPSQD
 JV2706  HISTORY     - 20020125 GOOD             MDSHA
 JV2706  HISTORY     - 20050405 GOOD             USPSQD
 JV2706
 JV2706                          STATION DESCRIPTION
 JV2706
 JV2706'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2706'2 MI E FROM ROCKVILLE.
 JV2706'ON NORBECK ROAD, AT THE SOUTHWEST CORNER OF THE BRIDGE OVER ROCK
 JV2706'CREEK, AND IN THE TOP OF THE WING WALL.
 JV2706
 JV2706                          STATION RECOVERY (1985)
 JV2706
 JV2706'RECOVERY NOTE BY US POWER SQUADRON 1985
 JV2706'THE MARK IS ON BALTIMORE ROAD AT THE SOUTHWEST CORNER OF THE BRIDGE
 JV2706'OVER ROCK CREEK AND IN THE TOP THE WING WALL.
 JV2706
 JV2706                          STATION RECOVERY (2002)
 JV2706
 JV2706'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV2706'THE STATION WAS RECOVERED IN GOOD CONDITION, A NEW DESCRIPTION
 JV2706'FOLLOWS.  THE STATION IS LOCATED IN THE EAST SECTION OF ROCKVILLE. TO
 JV2706'REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 28 (NORBECK
 JV2706'ROAD) AND STATE HIGHWAY 586(VEIRS MILLS ROAD), GO NORTH ALONG NORBECK
 JV2706'ROAD FOR 0.35 MI (0.56 KM) TO BALTIMORE ROAD. TURN RIGHT AND GO EAST
 JV2706'THEN NORTH ALONG BALTIMORE ROAD FOR 1.5 MI (2.41 KM) TO THE BRIDGE
 JV2706'OVER ROCK CREEK AND THE STATION ON THE RIGHT.  THE STATION IS A WSSC
 JV2706'BOLT AND WASHER SET IN THE TOP OF THE SOUTHWEST WING WALL AND ABOUT
 JV2706'LEVEL WITH THE ROAD.
 JV2706
 JV2706                          STATION RECOVERY (2005)
 JV2706
 JV2706'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV2706'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1470 ***********************************************************************
 JV1470  DESIGNATION -  1942
 JV1470  PID         -  JV1470
 JV1470  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1470  COUNTRY     -  US
 JV1470  USGS QUAD   -  BELTSVILLE (2016)
 JV1470
 JV1470                         *CURRENT SURVEY CONTROL
 JV1470  ______________________________________________________________________
 JV1470* NAD 83(1986) POSITION- 39 03 04.     (N) 076 55 44.     (W)   SCALED
 JV1470* NAVD 88 ORTHO HEIGHT -    54.999 (meters)      180.44  (feet) ADJUSTED
 JV1470  ______________________________________________________________________
 JV1470  GEOID HEIGHT    -        -32.106 (meters)                     GEOID18
 JV1470  DYNAMIC HEIGHT  -         54.970 (meters)      180.35  (feet) COMP
 JV1470  MODELED GRAVITY -    980,098.3   (mgal)                       NAVD 88
 JV1470
 JV1470  VERT ORDER      -  SECOND    CLASS 0
 JV1470
 JV1470.The horizontal coordinates were scaled from a map and have
 JV1470.an estimated accuracy of +/- 6 seconds.
 JV1470
 JV1470.The orthometric height was determined by differential leveling and
 JV1470.adjusted by the NATIONAL GEODETIC SURVEY
 JV1470.in June 1991.
 JV1470
 JV1470.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1470.GEOID18 height accuracy estimate available here.
 JV1470
 JV1470.Click photographs - Photos may exist for this station.
 JV1470
 JV1470.The dynamic height is computed by dividing the NAVD 88
 JV1470.geopotential number by the normal gravity value computed on the
 JV1470.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1470.degrees latitude (g = 980.6199 gals.).
 JV1470
 JV1470.The modeled gravity was interpolated from observed gravity values.
 JV1470
 JV1470;                    North         East    Units  Estimated Accuracy
 JV1470;SPC MD       -   153,680.      406,160.      MT  (+/- 180 meters Scaled)
 JV1470
 JV1470_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ330242(NAD 83)
 JV1470
 JV1470                          SUPERSEDED SURVEY CONTROL
 JV1470
 JV1470  NGVD 29 (11/26/84)   55.217  (m)          181.16   (f) ADJUSTED    2 0
 JV1470
 JV1470.Superseded values are not recommended for survey control.
 JV1470
 JV1470.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1470.See file dsdata.pdf to determine how the superseded data were derived.
 JV1470
 JV1470_MARKER: Z = SEE DESCRIPTION
 JV1470_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1470_SP_SET: BRIDGE
 JV1470_STAMPING: WSSC BM 1942
 JV1470_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1470
 JV1470  HISTORY     - Date     Condition        Report By
 JV1470  HISTORY     - 1942     MONUMENTED       WSSC
 JV1470  HISTORY     - 1959     GOOD             CGS
 JV1470  HISTORY     - 20020130 MARK NOT FOUND   MDSHA
 JV1470
 JV1470                          STATION DESCRIPTION
 JV1470
 JV1470'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1470'1.6 MI NW FROM BELTSVILLE.
 JV1470'1.6 MILES NORTHWEST ALONG STATE HIGHWAY 212 FROM THE INTERSECTION
 JV1470'OF U.S. HIGHWAY 1 AT BELTSVILLE, AT THE BRIDGE OVER LITTLE POINT
 JV1470'BRANCH, AND ON THE TOP OF THE SOUTHWEST PARAPET.  A WASHINGTON
 JV1470'SUBURBAN SANITARY DISTRICT BRASS LAG SCREW AND WASHER STAMPED
 JV1470'WSSC BM 1942.
 JV1470
 JV1470                          STATION RECOVERY (2002)
 JV1470
 JV1470'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV1470'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2708 ***********************************************************************
 JV2708  DESIGNATION -  1943 WSSC
 JV2708  PID         -  JV2708
 JV2708  STATE/COUNTY-  MD/MONTGOMERY
 JV2708  COUNTRY     -  US
 JV2708  USGS QUAD   -  KENSINGTON (2016)
 JV2708
 JV2708                         *CURRENT SURVEY CONTROL
 JV2708  ______________________________________________________________________
 JV2708* NAD 83(1986) POSITION- 39 05 58.     (N) 077 05 59.     (W)   SCALED
 JV2708* NAVD 88 ORTHO HEIGHT -   127.47  (+/-2cm)      418.2   (feet) VERTCON3
 JV2708  ______________________________________________________________________
 JV2708  GEOID HEIGHT    -        -31.783 (meters)                     GEOID18
 JV2708  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2708
 JV2708.The horizontal coordinates were scaled from a map and have
 JV2708.an estimated accuracy of +/- 6 seconds.
 JV2708
 JV2708.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2708.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2708
 JV2708.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2708.GEOID18 height accuracy estimate available here.
 JV2708
 JV2708.The vertical order pertains to the NGVD 29 superseded value.
 JV2708
 JV2708.Click photographs - Photos may exist for this station.
 JV2708
 JV2708;                    North         East    Units  Estimated Accuracy
 JV2708;SPC MD       -   159,050.      391,370.      MT  (+/- 180 meters Scaled)
 JV2708
 JV2708_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ184299(NAD 83)
 JV2708
 JV2708                          SUPERSEDED SURVEY CONTROL
 JV2708
 JV2708  NGVD 29 (11/26/84)  127.687  (m)          418.92   (f) ADJUSTED    2 0
 JV2708
 JV2708.Superseded values are not recommended for survey control.
 JV2708
 JV2708.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2708.See file dsdata.pdf to determine how the superseded data were derived.
 JV2708
 JV2708_MARKER: B = BOLT
 JV2708_SETTING: 0 = UNSPECIFIED SETTING
 JV2708_SP_SET: IRON PIPE
 JV2708_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2708
 JV2708  HISTORY     - Date     Condition        Report By
 JV2708  HISTORY     - UNK      MONUMENTED       WSSC
 JV2708  HISTORY     - 1939     GOOD             WSSC
 JV2708
 JV2708                          STATION DESCRIPTION
 JV2708
 JV2708'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2708'1.2 MI W FROM NORBECK.
 JV2708'ON NORBECK ROAD, OPPOSITE THE JUNCTION OF A DIRT ROAD LEADING
 JV2708'SOUTH, AND 16 FEET NORTH OF THE CENTERLINE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2853 ***********************************************************************
 JV2853  DESIGNATION -  1944
 JV2853  PID         -  JV2853
 JV2853  STATE/COUNTY-  MD/MONTGOMERY
 JV2853  COUNTRY     -  US
 JV2853  USGS QUAD   -  ROCKVILLE (2016)
 JV2853
 JV2853                         *CURRENT SURVEY CONTROL
 JV2853  ______________________________________________________________________
 JV2853* NAD 83(1986) POSITION- 39 00 56.     (N) 077 12 45.     (W)   SCALED
 JV2853* NAVD 88 ORTHO HEIGHT -    96.379 (meters)      316.20  (feet) ADJUSTED
 JV2853  ______________________________________________________________________
 JV2853  GEOID HEIGHT    -        -31.717 (meters)                     GEOID18
 JV2853  DYNAMIC HEIGHT  -         96.329 (meters)      316.04  (feet) COMP
 JV2853  MODELED GRAVITY -    980,108.3   (mgal)                       NAVD 88
 JV2853
 JV2853  VERT ORDER      -  SECOND    CLASS I
 JV2853
 JV2853.The horizontal coordinates were scaled from a map and have
 JV2853.an estimated accuracy of +/- 6 seconds.
 JV2853
 JV2853.The orthometric height was determined by differential leveling and
 JV2853.adjusted by the NATIONAL GEODETIC SURVEY
 JV2853.in June 1991.
 JV2853
 JV2853.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2853.GEOID18 height accuracy estimate available here.
 JV2853
 JV2853.Click photographs - Photos may exist for this station.
 JV2853
 JV2853.The dynamic height is computed by dividing the NAVD 88
 JV2853.geopotential number by the normal gravity value computed on the
 JV2853.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2853.degrees latitude (g = 980.6199 gals.).
 JV2853
 JV2853.The modeled gravity was interpolated from observed gravity values.
 JV2853
 JV2853;                    North         East    Units  Estimated Accuracy
 JV2853;SPC MD       -   149,750.      381,600.      MT  (+/- 180 meters Scaled)
 JV2853
 JV2853_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ084208(NAD 83)
 JV2853
 JV2853                          SUPERSEDED SURVEY CONTROL
 JV2853
 JV2853  NGVD 29 (11/26/84)   96.611  (m)          316.96   (f) ADJUSTED    2 0
 JV2853
 JV2853.Superseded values are not recommended for survey control.
 JV2853
 JV2853.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2853.See file dsdata.pdf to determine how the superseded data were derived.
 JV2853
 JV2853_MARKER: B = BOLT
 JV2853_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2853_SP_SET: BRIDGE WINGWALL
 JV2853_STAMPING: 1944 WSSC
 JV2853_MARK LOGO: NONE
 JV2853_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2853_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2853_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2853+SATELLITE: SATELLITE OBSERVATIONS - August 17, 2001
 JV2853
 JV2853  HISTORY     - Date     Condition        Report By
 JV2853  HISTORY     - UNK      MONUMENTED       WSSC
 JV2853  HISTORY     - 1965     GOOD             WSSC
 JV2853  HISTORY     - 20010817 GOOD             MDSHA
 JV2853
 JV2853                          STATION DESCRIPTION
 JV2853
 JV2853'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2853'0.2 MI SW FROM POTOMAC.
 JV2853'0.25 MI. S.W. ALONG STATE HW. 189 (FALLS RAD) FROM ITS
 JV2853'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC IN THE
 JV2853'N.W. CORNER OF THE BRIDGE OVER ROCK RUN.
 JV2853
 JV2853                          STATION RECOVERY (2001)
 JV2853
 JV2853'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2853'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2703 ***********************************************************************
 JV2703  DESIGNATION -  1946
 JV2703  PID         -  JV2703
 JV2703  STATE/COUNTY-  MD/MONTGOMERY
 JV2703  COUNTRY     -  US
 JV2703  USGS QUAD   -  ROCKVILLE (2016)
 JV2703
 JV2703                         *CURRENT SURVEY CONTROL
 JV2703  ______________________________________________________________________
 JV2703* NAD 83(1986) POSITION- 39 05 03.     (N) 077 07 39.     (W)   SCALED
 JV2703* NAVD 88 ORTHO HEIGHT -   111.90  (+/-2cm)      367.1   (feet) VERTCON3
 JV2703  ______________________________________________________________________
 JV2703  GEOID HEIGHT    -        -31.752 (meters)                     GEOID18
 JV2703  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2703
 JV2703.The horizontal coordinates were scaled from a map and have
 JV2703.an estimated accuracy of +/- 6 seconds.
 JV2703
 JV2703.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2703.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2703
 JV2703.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2703.GEOID18 height accuracy estimate available here.
 JV2703
 JV2703.The vertical order pertains to the NGVD 29 superseded value.
 JV2703
 JV2703.Click photographs - Photos may exist for this station.
 JV2703
 JV2703;                    North         East    Units  Estimated Accuracy
 JV2703;SPC MD       -   157,360.      388,970.      MT  (+/- 180 meters Scaled)
 JV2703
 JV2703_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ159282(NAD 83)
 JV2703
 JV2703                          SUPERSEDED SURVEY CONTROL
 JV2703
 JV2703  NGVD 29 (11/26/84)  112.116  (m)          367.83   (f) ADJUSTED    2 0
 JV2703
 JV2703.Superseded values are not recommended for survey control.
 JV2703
 JV2703.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2703.See file dsdata.pdf to determine how the superseded data were derived.
 JV2703
 JV2703_MARKER: B = BOLT
 JV2703_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV2703+WITH SETTING: INTO GROUND
 JV2703_STAMPING: 1946 WSSC
 JV2703_MARK LOGO: NONE
 JV2703_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2703_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2703_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2703+SATELLITE: SATELLITE OBSERVATIONS - October 22, 2009
 JV2703
 JV2703  HISTORY     - Date     Condition        Report By
 JV2703  HISTORY     - UNK      MONUMENTED       WSSC
 JV2703  HISTORY     - 1939     GOOD             WSSC
 JV2703  HISTORY     - 20020125 GOOD             MDSHA
 JV2703  HISTORY     - 20091022 GOOD             NGS
 JV2703
 JV2703                          STATION DESCRIPTION
 JV2703
 JV2703'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2703'1 MI E FROM ROCKVILLE.
 JV2703'ON NORBECK ROAD, OPPOSITE THE ENTRANCE TO ST. MARYS CEMETERY, AT
 JV2703'THE JUNCTION OF AVERY ROAD, AND ON THE NORTH SIDE OF NORBECK
 JV2703'ROAD.
 JV2703
 JV2703                          STATION RECOVERY (2002)
 JV2703
 JV2703'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV2703'THE STATION IS LOCATED IN THE TOWN OF ROCKVILLE.  TO REACH THE STATION
 JV2703'FROM THE INTERSECTION OF STATE HIGHWAY 28 (NORBECK ROAD) AND STATE
 JV2703'HIGHWAY 586 (VEIRS MILLS ROAD), GO NORTH ALONG NORBECK ROAD FOR 0.35
 JV2703'MI (0.56 KM) TO BALTIMORE ROAD. TURN RIGHT AND GO EAST ALONG BALTIMORE
 JV2703'ROAD FOR 0.5 MI (0.8 KM) TO THE SAINT MARYS CEMETERY ON THE RIGHT AND
 JV2703'THE STATION ON THE LEFT.  THE STATION IS A BOLT AND WASHER SET IN THE
 JV2703'TOP OF A 2 INCH (5 CM) ROUND METAL PIPE WHICH IS RECESSED 2 INCH (5
 JV2703'CM) BELOW THE GROUND. IT IS 32.4 FT (9.9 M) NORTH OF THE CENTER LINE
 JV2703'OF THE ROAD, 2.8 FT (0.9 M) SOUTH OF A 36 INCH (91 CM) TALL STONE WALL
 JV2703'AND FIBERGLAS WITNESS POST, 11.5 FT (3.5 M) WEST OF POWER POLE NUMBER
 JV2703'783455-6755, 75.6 FT (23.0 M) EAST OF TELEPHONE POLE NUMBER 4268.
 JV2703
 JV2703                          STATION RECOVERY (2009)
 JV2703
 JV2703'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV2703'MARK IS RECESSED 13 CM (0.4 FT) AND IS 3.35 M (11.0 FT) M W OF A
 JV2703'UTILITY POLE DESIGNATED VZ2591.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2661 ***********************************************************************
 JV2661  DESIGNATION -  1947 WSSC
 JV2661  PID         -  JV2661
 JV2661  STATE/COUNTY-  MD/MONTGOMERY
 JV2661  COUNTRY     -  US
 JV2661  USGS QUAD   -  SANDY SPRING (2016)
 JV2661
 JV2661                         *CURRENT SURVEY CONTROL
 JV2661  ______________________________________________________________________
 JV2661* NAD 83(1986) POSITION- 39 11 38.     (N) 077 07 27.     (W)   SCALED
 JV2661* NAVD 88 ORTHO HEIGHT -   172.99  (+/-2cm)      567.6   (feet) VERTCON3
 JV2661  ______________________________________________________________________
 JV2661  GEOID HEIGHT    -        -31.765 (meters)                     GEOID18
 JV2661  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2661
 JV2661.The horizontal coordinates were scaled from a map and have
 JV2661.an estimated accuracy of +/- 6 seconds.
 JV2661
 JV2661.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2661.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2661
 JV2661.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2661.GEOID18 height accuracy estimate available here.
 JV2661
 JV2661.The vertical order pertains to the NGVD 29 superseded value.
 JV2661
 JV2661.Click photographs - Photos may exist for this station.
 JV2661
 JV2661;                    North         East    Units  Estimated Accuracy
 JV2661;SPC MD       -   169,540.      389,270.      MT  (+/- 180 meters Scaled)
 JV2661
 JV2661_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ165404(NAD 83)
 JV2661
 JV2661                          SUPERSEDED SURVEY CONTROL
 JV2661
 JV2661  NGVD 29 (11/26/84)  173.192  (m)          568.21   (f) ADJUSTED    2 0
 JV2661
 JV2661.Superseded values are not recommended for survey control.
 JV2661
 JV2661.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2661.See file dsdata.pdf to determine how the superseded data were derived.
 JV2661
 JV2661_MARKER: B = BOLT
 JV2661_SETTING: 0 = UNSPECIFIED SETTING
 JV2661_SP_SET: IRON PIPE
 JV2661_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2661
 JV2661  HISTORY     - Date     Condition        Report By
 JV2661  HISTORY     - UNK      MONUMENTED       WSSC
 JV2661  HISTORY     - 1944     GOOD             WSSC
 JV2661
 JV2661                          STATION DESCRIPTION
 JV2661
 JV2661'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2661'1.5 MI SE FROM LAYONSVILLE.
 JV2661'ON STATE HIGHWAY 108, AT CLAYSVILLE, AT THE JUNCTION OF A ROAD
 JV2661'LEADING NORTHEAST, 40.6 FEET SOUTHEAST OF THE CENTERLINE OF
 JV2661'THE ROAD, AND 24.3 FEET NORTHEAST OF THE CENTERLINE OF THE
 JV2661'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8942 ***********************************************************************
 HV8942  DESIGNATION -  19499
 HV8942  PID         -  HV8942
 HV8942  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8942  COUNTRY     -  US
 HV8942  USGS QUAD   -  LANHAM (2016)
 HV8942
 HV8942                         *CURRENT SURVEY CONTROL
 HV8942  ______________________________________________________________________
 HV8942* NAD 83(2011) POSITION- 38 56 19.47707(N) 076 49 25.93305(W)   ADJUSTED
 HV8942* NAD 83(2011) ELLIP HT-    13.826 (meters)        (06/27/12)   ADJUSTED
 HV8942* NAD 83(2011) EPOCH   -  2010.00
 HV8942* NAVD 88 ORTHO HEIGHT -    46.3   (meters)      152.    (feet) GPS OBS
 HV8942  ______________________________________________________________________
 HV8942  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV8942  GEOID HEIGHT    -        -32.850 (meters)                     GEOID93
 HV8942  GEOID HEIGHT    -        -32.491 (meters)                     GEOID18
 HV8942  NAD 83(2011) X  -  1,132,344.178 (meters)                     COMP
 HV8942  NAD 83(2011) Y  - -4,836,837.214 (meters)                     COMP
 HV8942  NAD 83(2011) Z  -  3,987,038.546 (meters)                     COMP
 HV8942  LAPLACE CORR    -         -5.34  (seconds)                    DEFLEC18
 HV8942
 HV8942  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8942  Standards:
 HV8942         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8942            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8942  -------------------------------------------------------------------
 HV8942  NETWORK    0.78   1.59           0.31   0.33   0.81      0.07702873
 HV8942  -------------------------------------------------------------------
 HV8942  Click here for local accuracies and other accuracy information.
 HV8942
 HV8942.The horizontal coordinates were established by GPS observations
 HV8942.and adjusted by the National Geodetic Survey in June 2012.
 HV8942
 HV8942.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8942.been affixed to the stable North American tectonic plate. See 
 HV8942.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8942
 HV8942.The horizontal coordinates are valid at the epoch date displayed above
 HV8942.which is a decimal equivalence of Year/Month/Day.
 HV8942
 HV8942.The orthometric height was determined by GPS observations and a
 HV8942.high-resolution geoid model.
 HV8942
 HV8942.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8942.GEOID18 height accuracy estimate available here.
 HV8942
 HV8942.Click photographs - Photos may exist for this station.
 HV8942
 HV8942.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8942
 HV8942.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8942
 HV8942.The ellipsoidal height was determined by GPS observations
 HV8942.and is referenced to NAD 83.
 HV8942
 HV8942. The following values were computed from the NAD 83(2011) position.
 HV8942
 HV8942;                    North         East     Units Scale Factor Converg.
 HV8942;SPC MD       -   141,220.901   415,269.864   MT  0.99995045   +0 06 38.0
 HV8942;SPC MD       -   463,322.24  1,362,431.21   sFT  0.99995045   +0 06 38.0
 HV8942;UTM  18      - 4,311,560.476   341,926.118   MT  0.99990769   -1 08 47.5
 HV8942
 HV8942!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8942!SPC MD       -   0.99999783  x   0.99995045  =   0.99994828
 HV8942!UTM  18      -   0.99999783  x   0.99990769  =   0.99990552
 HV8942
 HV8942_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4192611560(NAD 83)
 HV8942
 HV8942                          SUPERSEDED SURVEY CONTROL
 HV8942
 HV8942  NAD 83(2007)-  38 56 19.47740(N)    076 49 25.93383(W) AD(2002.00) 0
 HV8942  ELLIP H (02/10/07)   13.848  (m)                       GP(2002.00)    
 HV8942  ELLIP H (08/30/02)   13.849  (m)                       GP(       ) 4 2
 HV8942  NAD 83(1991)-  38 56 19.47737(N)    076 49 25.93393(W) AD(       ) 1
 HV8942  ELLIP H (01/27/92)   13.800  (m)                       GP(       ) 4 1
 HV8942  NAD 83(1986)-  38 56 19.47578(N)    076 49 25.94464(W) AD(       ) 1
 HV8942  NGVD 29 (03/05/91)   46.6    (m)  OSU 89B  model used  GPS OBS        
 HV8942
 HV8942.Superseded values are not recommended for survey control.
 HV8942
 HV8942.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8942.See file dsdata.pdf to determine how the superseded data were derived.
 HV8942
 HV8942_MARKER: DD = SURVEY DISK
 HV8942_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8942_STAMPING: 19499
 HV8942_MARK LOGO: WSSC
 HV8942_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8942_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8942+STABILITY: SURFACE MOTION
 HV8942_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8942+SATELLITE: SATELLITE OBSERVATIONS - March 31, 1993
 HV8942
 HV8942  HISTORY     - Date     Condition        Report By
 HV8942  HISTORY     - 1989     MONUMENTED       WSSC
 HV8942  HISTORY     - 19930331 GOOD             MSI
 HV8942
 HV8942                          STATION DESCRIPTION
 HV8942
 HV8942'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8942'THE STATION IS LOCATED ABOUT 9.2 KM (5.7 MI) SW OF BOWIE, 10.9 KM
 HV8942'(6.8 MI) NW OF MARLBORO, AND 6.4 KM (4.0 MI) SE OF LANDOVER HILLS. TO
 HV8942'REACH THE STATION FROM THE INTERSECTION STATE HWYS RT 450 (ANNAPOLIS
 HV8942'RD) AND RT 704 (MARTIN LUTHER KING JR HIGHWAY) IN GLENN DALE GO WEST
 HV8942'ALONG RT 704 1.0 KM (0.6 MI) TO LOTTSFORD VISTA RD.  TURN LEFT AND GO
 HV8942'SOUTH ON LOTTSFORD VISTA ROAD 1.9 KM (1.2 MI) TO STATION ON LEFT.
 HV8942'STATION IS 15.3 M (50.2 FT) NORTH OF SAVILLE LANE. OWNERSHIP--COUNTY
 HV8942'ROAD RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK
 HV8942'STAMPED 19499.  SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.20 M
 HV8942'(0.66 FT) IN DIAMETER, RECESSED 0.03 M (0.10 FT) IN THE GRASS. IT IS
 HV8942'9.48 M (31.10 FT) NW OF A X CUT IN CONC. HEADWALL, 22.3 M (73.2 FT) E
 HV8942'OF A REFERENCE NAIL IN THE N SIDE OF A G AND E POLE NUMBER 532545.
 HV8942'25.72 M (84.38 FT) SW OF THE EAST EDGE OF A PILLAR ON THE SW CORNER
 HV8942'OF HOUSE NUMBER 3523.  24.95 M (81.86 FT) WSW OF SOUTH EDGE OF A
 HV8942'PILLAR ON THE SE CORNER OF HOUSE 3523. NO REFERENCE MARKS WERE
 HV8942'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 HV8942'STATION AT THIS TIME.
 HV8942
 HV8942                          STATION RECOVERY (1993)
 HV8942
 HV8942'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV8942'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1383 ***********************************************************************
 JV1383  DESIGNATION -  195
 JV1383  PID         -  JV1383
 JV1383  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1383  COUNTRY     -  US
 JV1383  USGS QUAD   -  ODENTON (2016)
 JV1383
 JV1383                         *CURRENT SURVEY CONTROL
 JV1383  ______________________________________________________________________
 JV1383* NAD 83(1986) POSITION- 39 04 01.6    (N) 076 43 41.3    (W)   HD_HELD2
 JV1383* NAVD 88 ORTHO HEIGHT -    34.807 (meters)      114.20  (feet) ADJUSTED
 JV1383  ______________________________________________________________________
 JV1383  GEOID HEIGHT    -        -32.614 (meters)                     GEOID18
 JV1383  DYNAMIC HEIGHT  -         34.788 (meters)      114.13  (feet) COMP
 JV1383  MODELED GRAVITY -    980,084.4   (mgal)                       NAVD 88
 JV1383
 JV1383  VERT ORDER      -  FIRST     CLASS II
 JV1383
 JV1383.The horizontal coordinates were established by autonomous hand held GPS
 JV1383.observations and have an estimated accuracy of +/- 10 meters.
 JV1383
 JV1383.The orthometric height was determined by differential leveling and
 JV1383.adjusted by the NATIONAL GEODETIC SURVEY
 JV1383.in June 1991.
 JV1383
 JV1383.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1383.GEOID18 height accuracy estimate available here.
 JV1383
 JV1383.Click photographs - Photos may exist for this station.
 JV1383
 JV1383.The dynamic height is computed by dividing the NAVD 88
 JV1383.geopotential number by the normal gravity value computed on the
 JV1383.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1383.degrees latitude (g = 980.6199 gals.).
 JV1383
 JV1383.The modeled gravity was interpolated from observed gravity values.
 JV1383
 JV1383;                    North         East    Units  Estimated Accuracy
 JV1383;SPC MD       -   155,491.      423,527.      MT  (+/- 10 meters HH2 GPS)
 JV1383
 JV1383_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5049425645(NAD 83)
 JV1383
 JV1383                          SUPERSEDED SURVEY CONTROL
 JV1383
 JV1383  NGVD 29 (11/26/84)   35.036  (m)          114.95   (f) ADJUSTED    1 2
 JV1383
 JV1383.Superseded values are not recommended for survey control.
 JV1383
 JV1383.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1383.See file dsdata.pdf to determine how the superseded data were derived.
 JV1383
 JV1383_MARKER: B = BOLT
 JV1383_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1383_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1383+STABILITY: SURFACE MOTION
 JV1383
 JV1383  HISTORY     - Date     Condition        Report By
 JV1383  HISTORY     - 1941     MONUMENTED       CGS
 JV1383
 JV1383                          STATION DESCRIPTION
 JV1383
 JV1383'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1383'1.8 MI SW FROM ODENTON.
 JV1383'ABOUT 1.8 MILES SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1383'THE STATION AT ODENTON, ANNE ARUNDEL COUNTY, ABOUT 100 FEET
 JV1383'SOUTHWEST OF THE NORTHERNMOST POWER-TRANSMISSION LINE TOWER,
 JV1383'AT MILEAGE 115.47, 91 FEET NORTHEAST OF MANHOLE 359, AND 33
 JV1383'FEET NORTHWEST OF THE NORTHWEST RAIL OF THE NORTHWEST TRACK.
 JV1383'AN IRON BOLT, SET IN THE TOP OF A CONCRETE POST MARKED U S 195.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8943 ***********************************************************************
 HV8943  DESIGNATION -  19520
 HV8943  PID         -  HV8943
 HV8943  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8943  COUNTRY     -  US
 HV8943  USGS QUAD   -  UPPER MARLBORO (2016)
 HV8943
 HV8943                         *CURRENT SURVEY CONTROL
 HV8943  ______________________________________________________________________
 HV8943* NAD 83(2011) POSITION- 38 50 55.91466(N) 076 46 03.18782(W)   ADJUSTED
 HV8943* NAD 83(2011) ELLIP HT-    15.789 (meters)        (06/27/12)   ADJUSTED
 HV8943* NAD 83(2011) EPOCH   -  2010.00
 HV8943* NAVD 88 ORTHO HEIGHT -    48.5   (meters)      159.    (feet) VERTCON3
 HV8943  ______________________________________________________________________
 HV8943  GEOID HEIGHT    -        -32.801 (meters)                     GEOID18
 HV8943  NAD 83(2011) X  -  1,138,532.314 (meters)                     COMP
 HV8943  NAD 83(2011) Y  - -4,841,821.820 (meters)                     COMP
 HV8943  NAD 83(2011) Z  -  3,979,273.994 (meters)                     COMP
 HV8943  LAPLACE CORR    -         -5.91  (seconds)                    DEFLEC18
 HV8943
 HV8943  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8943  Standards:
 HV8943         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8943            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8943  -------------------------------------------------------------------
 HV8943  NETWORK    1.23   2.49           0.49   0.51   1.27      0.14704889
 HV8943  -------------------------------------------------------------------
 HV8943  Click here for local accuracies and other accuracy information.
 HV8943
 HV8943.The horizontal coordinates were established by GPS observations
 HV8943.and adjusted by the National Geodetic Survey in June 2012.
 HV8943
 HV8943.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8943.been affixed to the stable North American tectonic plate. See 
 HV8943.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8943
 HV8943.The horizontal coordinates are valid at the epoch date displayed above
 HV8943.which is a decimal equivalence of Year/Month/Day.
 HV8943
 HV8943.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8943.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8943
 HV8943.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8943.GEOID18 height accuracy estimate available here.
 HV8943
 HV8943.Click photographs - Photos may exist for this station.
 HV8943
 HV8943.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8943
 HV8943.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8943
 HV8943.The ellipsoidal height was determined by GPS observations
 HV8943.and is referenced to NAD 83.
 HV8943
 HV8943. The following values were computed from the NAD 83(2011) position.
 HV8943
 HV8943;                    North         East     Units Scale Factor Converg.
 HV8943;SPC MD       -   131,254.642   420,177.855   MT  0.99994996   +0 08 45.2
 HV8943;SPC MD       -   430,624.60  1,378,533.51   sFT  0.99994996   +0 08 45.2
 HV8943;UTM  18      - 4,301,489.553   346,614.243   MT  0.99988972   -1 06 32.2
 HV8943
 HV8943!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8943!SPC MD       -   0.99999752  x   0.99994996  =   0.99994748
 HV8943!UTM  18      -   0.99999752  x   0.99988972  =   0.99988724
 HV8943
 HV8943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4661401489(NAD 83)
 HV8943
 HV8943                          SUPERSEDED SURVEY CONTROL
 HV8943
 HV8943  NAD 83(2007)-  38 50 55.91500(N)    076 46 03.18862(W) AD(2002.00) 0
 HV8943  ELLIP H (02/10/07)   15.810  (m)                       GP(2002.00)    
 HV8943  ELLIP H (08/30/02)   15.810  (m)                       GP(       ) 4 2
 HV8943  NAD 83(1991)-  38 50 55.91504(N)    076 46 03.18868(W) AD(       ) 1
 HV8943  ELLIP H (01/27/92)   15.761  (m)                       GP(       ) 4 1
 HV8943  NAD 83(1986)-  38 50 55.91346(N)    076 46 03.19934(W) AD(       ) 1
 HV8943  NGVD 29 (03/05/91)   48.7    (m)  OSU 89B  model used  GPS OBS        
 HV8943
 HV8943.Superseded values are not recommended for survey control.
 HV8943
 HV8943.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8943.See file dsdata.pdf to determine how the superseded data were derived.
 HV8943
 HV8943_MARKER: B = BOLT
 HV8943_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8943_MARK LOGO: WSSC
 HV8943_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8943_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8943+STABILITY: SURFACE MOTION
 HV8943_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8943+SATELLITE: SATELLITE OBSERVATIONS - May 24, 2001
 HV8943
 HV8943  HISTORY     - Date     Condition        Report By
 HV8943  HISTORY     - 1987     MONUMENTED       WSSC
 HV8943  HISTORY     - 19890426 GOOD
 HV8943  HISTORY     - 20010524 GOOD             DEWDAV
 HV8943
 HV8943                          STATION DESCRIPTION
 HV8943
 HV8943'DESCRIBED BY WASH SUBURB SAN COMM 1987
 HV8943'THE STATION IS LOCATED ABOUT 4.0 KM (2.5 MI) NW OF MARLBORO, 7.2 KM
 HV8943'(4.5 MI) SW OF BOWIE, 4.0 KM (2.5 MI) SE OF LARGO. TO REACH THE
 HV8943'STATION FROM THE INTERSECTION OF STATE HWY RTE 202 (LARGO RD) AND RTE
 HV8943'214 (CENTRAL AVE) IN LARGO GO SE ALONG RTE 202 8.4 KM (5.2 MI) TO THE
 HV8943'STATION ON THE RIGHT.  IT IS 38.1 M (125.0 FT) NNW OF OLD LARGO
 HV8943'ROAD. OWNERSHIP--STATE HIGHWAY RIGHT-OF-WAY THE STATION MARK IS A
 HV8943'BRASS BOLT WITH NO STAMPING SET INTO THE TOP OF A ROUND CONCRETE
 HV8943'MONUMENT 0.2 M (0.7 FT) IN DIAMETER RECESSED 0.12 M (0.39 FT)  IT IS
 HV8943'13.53 M (44.39 FT) SE OF A REF NAIL IN THE EAST SIDE OF A .2 M
 HV8943'(0.7 FT) TWIN LOCUST, 31.8 M (104.3 FT) NE OF A REF NAIL IN THE NORTH
 HV8943'SIDE OF A C AND P POLE NUMBER 70701P, 40.75 M (133.69 FT) N OF A REF
 HV8943'NAIL IN THE WEST SIDE OF A .2 M (0.7 FT) LOCUST, AND 23.42 M
 HV8943'(76.84 FT) SW OF A REF NAIL IN THE NW SIDE OF A .25 M (0.82 FT)
 HV8943'MAPLE. NO REFERENCES WERE ESTABLISHED AT THIS TIME. STATION BROCK AZ
 HV8943'MK SERVES AS AN AZIMUTH MARK FOR THIS STATION.
 HV8943
 HV8943                          STATION RECOVERY (1989)
 HV8943
 HV8943'RECOVERED 1989
 HV8943'RECOVERED IN GOOD CONDITION.
 HV8943
 HV8943                          STATION RECOVERY (2001)
 HV8943
 HV8943'RECOVERY NOTE BY DEWBERRY DAVIS 2001 (CSW)
 HV8943'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1455 ***********************************************************************
 JV1455  DESIGNATION -  1956 WSSC
 JV1455  PID         -  JV1455
 JV1455  STATE/COUNTY-  MD/MONTGOMERY
 JV1455  COUNTRY     -  US
 JV1455  USGS QUAD   -  BELTSVILLE (2016)
 JV1455
 JV1455                         *CURRENT SURVEY CONTROL
 JV1455  ______________________________________________________________________
 JV1455* NAD 83(1986) POSITION- 39 05 09.     (N) 076 57 03.     (W)   SCALED
 JV1455* NAVD 88 ORTHO HEIGHT -   139.32  (+/-2cm)      457.1   (feet) VERTCON3
 JV1455  ______________________________________________________________________
 JV1455  GEOID HEIGHT    -        -32.046 (meters)                     GEOID18
 JV1455  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1455
 JV1455.The horizontal coordinates were scaled from a map and have
 JV1455.an estimated accuracy of +/- 6 seconds.
 JV1455
 JV1455.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1455.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1455
 JV1455.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1455.GEOID18 height accuracy estimate available here.
 JV1455
 JV1455.The vertical order pertains to the NGVD 29 superseded value.
 JV1455
 JV1455.Click photographs - Photos may exist for this station.
 JV1455
 JV1455;                    North         East    Units  Estimated Accuracy
 JV1455;SPC MD       -   157,540.      404,250.      MT  (+/- 180 meters Scaled)
 JV1455
 JV1455_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ312281(NAD 83)
 JV1455
 JV1455                          SUPERSEDED SURVEY CONTROL
 JV1455
 JV1455  NGVD 29 (11/26/84)  139.527  (m)          457.76   (f) ADJUSTED    2 0
 JV1455
 JV1455.Superseded values are not recommended for survey control.
 JV1455
 JV1455.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1455.See file dsdata.pdf to determine how the superseded data were derived.
 JV1455
 JV1455_MARKER: B = BOLT
 JV1455_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1455_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1455
 JV1455  HISTORY     - Date     Condition        Report By
 JV1455  HISTORY     - UNK      MONUMENTED       WSSC
 JV1455  HISTORY     - 1939     GOOD             WSSC
 JV1455
 JV1455                          STATION DESCRIPTION
 JV1455
 JV1455'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1455'0.7 MI N FROM FAIRLAND.
 JV1455'ON COLUMBIA ROAD, AT THE JUNCTION OF A DIRT ROAD LEADING WEST,
 JV1455'ON THE WEST SIDE OF COLUMBIA ROAD, AND ON THE NORTH SIDE OF THE
 JV1455'DIRT ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2573 ***********************************************************************
 JV2573  DESIGNATION -  1962 WSSC
 JV2573  PID         -  JV2573
 JV2573  STATE/COUNTY-  MD/HOWARD
 JV2573  COUNTRY     -  US
 JV2573  USGS QUAD   -  WOODBINE (2016)
 JV2573
 JV2573                         *CURRENT SURVEY CONTROL
 JV2573  ______________________________________________________________________
 JV2573* NAD 83(1986) POSITION- 39 16 53.     (N) 077 01 51.     (W)   SCALED
 JV2573* NAVD 88 ORTHO HEIGHT -   160.964 (meters)      528.10  (feet) ADJUSTED
 JV2573  ______________________________________________________________________
 JV2573  GEOID HEIGHT    -        -31.865 (meters)                     GEOID18
 JV2573  DYNAMIC HEIGHT  -        160.879 (meters)      527.82  (feet) COMP
 JV2573  MODELED GRAVITY -    980,096.9   (mgal)                       NAVD 88
 JV2573
 JV2573  VERT ORDER      -  SECOND    CLASS 0
 JV2573
 JV2573.The horizontal coordinates were scaled from a map and have
 JV2573.an estimated accuracy of +/- 6 seconds.
 JV2573
 JV2573.The orthometric height was determined by differential leveling and
 JV2573.adjusted by the NATIONAL GEODETIC SURVEY
 JV2573.in June 1991.
 JV2573
 JV2573.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2573.GEOID18 height accuracy estimate available here.
 JV2573
 JV2573.Click photographs - Photos may exist for this station.
 JV2573
 JV2573.The dynamic height is computed by dividing the NAVD 88
 JV2573.geopotential number by the normal gravity value computed on the
 JV2573.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2573.degrees latitude (g = 980.6199 gals.).
 JV2573
 JV2573.The modeled gravity was interpolated from observed gravity values.
 JV2573
 JV2573;                    North         East    Units  Estimated Accuracy
 JV2573;SPC MD       -   179,250.      397,340.      MT  (+/- 180 meters Scaled)
 JV2573
 JV2573_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ248499(NAD 83)
 JV2573
 JV2573                          SUPERSEDED SURVEY CONTROL
 JV2573
 JV2573  NGVD 29 (11/26/84)  161.189  (m)          528.83   (f) ADJUSTED    2 0
 JV2573
 JV2573.Superseded values are not recommended for survey control.
 JV2573
 JV2573.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2573.See file dsdata.pdf to determine how the superseded data were derived.
 JV2573
 JV2573_MARKER: B = BOLT
 JV2573_SETTING: 0 = UNSPECIFIED SETTING
 JV2573_SP_SET: IRON PIPE
 JV2573_STAMPING: 1962
 JV2573_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2573
 JV2573  HISTORY     - Date     Condition        Report By
 JV2573  HISTORY     - UNK      MONUMENTED       WSSC
 JV2573  HISTORY     - 1946     GOOD             WSSC
 JV2573
 JV2573                          STATION DESCRIPTION
 JV2573
 JV2573'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2573'0.5 MI S FROM GLENWOOD.
 JV2573'ABOUT 0.5 MILE SOUTH ALONG THE SUNSHINE-GLENWOOD ROAD (STATE HIGHWAY
 JV2573'97) FROM THE POST OFFICE AT GLENWOOD, HOWARD COUNTY, AT THE
 JV2573'JUNCTION OF THE GARY-GLENWOOD ROAD, 54 FEET SOUTH OF THE CENTER
 JV2573'LINE OF THE GARY ROAD, 24.2 FEET WEST OF THE CENTER LINE OF THE
 JV2573'SUNSHINE-GLENWOOD ROAD, 53 FEET SOUTH OF A 30-INCH OAK TREE,
 JV2573'47.2 FEET SOUTHWEST OF A POLE, AND 9 FEET WEST OF POWER-TRANSMISSION
 JV2573'LINE POLE 82035.  A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS
 JV2573'BOLT AND WASHER, STAMPED 1962 AND SET IN THE TOP OF A CONCRETE-FILLED
 JV2573'IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1368 ***********************************************************************
 HV1368  DESIGNATION -  1966 WSSC
 HV1368  PID         -  HV1368
 HV1368  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1368  COUNTRY     -  US
 HV1368  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1368
 HV1368                         *CURRENT SURVEY CONTROL
 HV1368  ______________________________________________________________________
 HV1368* NAD 83(1986) POSITION- 38 57 06.     (N) 076 58 39.     (W)   SCALED
 HV1368* NAVD 88 ORTHO HEIGHT -    32.00  (+/-2cm)      105.0   (feet) VERTCON3
 HV1368  ______________________________________________________________________
 HV1368  GEOID HEIGHT    -        -32.079 (meters)                     GEOID18
 HV1368  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1368
 HV1368.The horizontal coordinates were scaled from a map and have
 HV1368.an estimated accuracy of +/- 6 seconds.
 HV1368
 HV1368.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1368.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1368
 HV1368.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1368.GEOID18 height accuracy estimate available here.
 HV1368
 HV1368.The vertical order pertains to the NGVD 29 superseded value.
 HV1368
 HV1368.Click photographs - Photos may exist for this station.
 HV1368
 HV1368;                    North         East    Units  Estimated Accuracy
 HV1368;SPC MD       -   142,640.      401,950.      MT  (+/- 180 meters Scaled)
 HV1368
 HV1368_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ286132(NAD 83)
 HV1368
 HV1368                          SUPERSEDED SURVEY CONTROL
 HV1368
 HV1368  NGVD 29 (11/26/84)   32.220  (m)          105.71   (f) ADJUSTED    2 0
 HV1368
 HV1368.Superseded values are not recommended for survey control.
 HV1368
 HV1368.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1368.See file dsdata.pdf to determine how the superseded data were derived.
 HV1368
 HV1368_MARKER: B = BOLT
 HV1368_SETTING: 0 = UNSPECIFIED SETTING
 HV1368_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1368
 HV1368  HISTORY     - Date     Condition        Report By
 HV1368  HISTORY     - UNK      MONUMENTED       WSSC
 HV1368  HISTORY     - 1944     GOOD             WSSC
 HV1368
 HV1368                          STATION DESCRIPTION
 HV1368
 HV1368'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1368'AT AVONDALE.
 HV1368'ON LA SALLE ROAD, AT THE JUNCTION OF A PRIVATE FARM ROAD, ON
 HV1368'THE NORTHEAST SIDE OF LA SALLE ROAD, 51.5 FEET NORTHWEST ACROSS
 HV1368'THE FARM ROAD FROM AN 8-INCH CHERRY TREE, 34.9 FEET WEST ACROSS
 HV1368'THE FARM ROAD FROM A 10-INCH LOCUST TREE, AND 12.8 FEET EAST
 HV1368'OF ANOTHER 10-INCH LOCUST TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8944 ***********************************************************************
 HV8944  DESIGNATION -  19684
 HV8944  PID         -  HV8944
 HV8944  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8944  COUNTRY     -  US
 HV8944  USGS QUAD   -  LANHAM (2016)
 HV8944
 HV8944                         *CURRENT SURVEY CONTROL
 HV8944  ______________________________________________________________________
 HV8944* NAD 83(2011) POSITION- 38 58 41.96668(N) 076 48 11.97769(W)   ADJUSTED
 HV8944* NAD 83(2011) ELLIP HT-    22.928 (meters)        (06/27/12)   ADJUSTED
 HV8944* NAD 83(2011) EPOCH   -  2010.00
 HV8944* NAVD 88 ORTHO HEIGHT -    55.4   (meters)      182.    (feet) VERTCON3
 HV8944  ______________________________________________________________________
 HV8944  GEOID HEIGHT    -        -32.495 (meters)                     GEOID18
 HV8944  NAD 83(2011) X  -  1,133,449.222 (meters)                     COMP
 HV8944  NAD 83(2011) Y  - -4,833,747.980 (meters)                     COMP
 HV8944  NAD 83(2011) Z  -  3,990,461.067 (meters)                     COMP
 HV8944  LAPLACE CORR    -         -5.52  (seconds)                    DEFLEC18
 HV8944
 HV8944  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8944  Standards:
 HV8944         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8944            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8944  -------------------------------------------------------------------
 HV8944  NETWORK    0.92   1.61           0.34   0.40   0.82      0.22949165
 HV8944  -------------------------------------------------------------------
 HV8944  Click here for local accuracies and other accuracy information.
 HV8944
 HV8944.The horizontal coordinates were established by GPS observations
 HV8944.and adjusted by the National Geodetic Survey in June 2012.
 HV8944
 HV8944.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8944.been affixed to the stable North American tectonic plate. See 
 HV8944.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8944
 HV8944.The horizontal coordinates are valid at the epoch date displayed above
 HV8944.which is a decimal equivalence of Year/Month/Day.
 HV8944
 HV8944.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8944.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8944
 HV8944.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8944.GEOID18 height accuracy estimate available here.
 HV8944
 HV8944.Click photographs - Photos may exist for this station.
 HV8944
 HV8944.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8944
 HV8944.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8944
 HV8944.The ellipsoidal height was determined by GPS observations
 HV8944.and is referenced to NAD 83.
 HV8944
 HV8944. The following values were computed from the NAD 83(2011) position.
 HV8944
 HV8944;                    North         East     Units Scale Factor Converg.
 HV8944;SPC MD       -   145,618.323   417,041.419   MT  0.99995144   +0 07 24.4
 HV8944;SPC MD       -   477,749.45  1,368,243.39   sFT  0.99995144   +0 07 24.4
 HV8944;UTM  18      - 4,315,917.756   343,793.667   MT  0.99990046   -1 08 04.4
 HV8944
 HV8944!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8944!SPC MD       -   0.99999640  x   0.99995144  =   0.99994784
 HV8944!UTM  18      -   0.99999640  x   0.99990046  =   0.99989686
 HV8944
 HV8944_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4379315917(NAD 83)
 HV8944
 HV8944                          SUPERSEDED SURVEY CONTROL
 HV8944
 HV8944  NAD 83(2007)-  38 58 41.96702(N)    076 48 11.97844(W) AD(2002.00) 0
 HV8944  ELLIP H (02/10/07)   22.961  (m)                       GP(2002.00)    
 HV8944  ELLIP H (08/30/02)   22.956  (m)                       GP(       ) 4 2
 HV8944  NAD 83(1991)-  38 58 41.96689(N)    076 48 11.97836(W) AD(       ) 1
 HV8944  ELLIP H (01/27/92)   22.910  (m)                       GP(       ) 4 1
 HV8944  NAD 83(1986)-  38 58 41.96523(N)    076 48 11.98911(W) AD(       ) 1
 HV8944  NGVD 29 (03/05/91)   55.7    (m)  OSU 89B  model used  GPS OBS        
 HV8944
 HV8944.Superseded values are not recommended for survey control.
 HV8944
 HV8944.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8944.See file dsdata.pdf to determine how the superseded data were derived.
 HV8944
 HV8944_MARKER: DD = SURVEY DISK
 HV8944_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8944_STAMPING: 19684
 HV8944_MARK LOGO: WSSC
 HV8944_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8944_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8944+STABILITY: SURFACE MOTION
 HV8944_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8944+SATELLITE: SATELLITE OBSERVATIONS - October 01, 2002
 HV8944
 HV8944  HISTORY     - Date     Condition        Report By
 HV8944  HISTORY     - 1989     MONUMENTED       WSSC
 HV8944  HISTORY     - 19970417 GOOD             DMW
 HV8944  HISTORY     - 20010316 GOOD             CHANCE
 HV8944  HISTORY     - 20020929 GOOD             JCLS
 HV8944  HISTORY     - 20021001 GOOD             JCLS
 HV8944
 HV8944                          STATION DESCRIPTION
 HV8944
 HV8944'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8944'THE STATION IS LOCATED ABOUT 1.6 KM (1.0 MI) SE OF GLENN DALE, 3.1 KM
 HV8944'(1.9 MI) S OF BOWIE, AND 4.2 KM (2.6 MI) E OF SEABROOK. TO REACH THE
 HV8944'STATION FROM THE INTERSECTION OF STATE HWYS RTE 564 (LANHAM SEVERN
 HV8944'RD) AND RTE 193 (GLENN DALE BLVD) IN GLENN DALE GO SE ALONG RTE 193
 HV8944'1.69 KM (1.05 MI) TO THE STATION IN THE CENTERLINE OF A GRASS MEDIAN
 HV8944'12.2 M (40.0 FT) NORTH OF DAISY LANE. OWNERSHIP--STATE HWY
 HV8944'RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 HV8944'19684 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 HV8944'DIAMETER FLUSH IN THE GRASS. IT IS 5.8 M (19.0 FT) N OF THE EDGE OF
 HV8944'DAISY LANE A MACADAM RD, 4.94 M (16.21 FT) E OF THE EDGE OF THE SOUTH
 HV8944'BOUND LANE OF RTE 193 A MACADAM RD, AND 3.97 M (13.02 FT) W OF THE
 HV8944'EDGE OF THE NORTH BOUND LANE OF RTE 193 A MACADAM RD. NO REFERENCES
 HV8944'WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR
 HV8944'THIS STATION AT THIS TIME.
 HV8944
 HV8944                          STATION RECOVERY (1997)
 HV8944
 HV8944'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 HV8944'RECOVERED AS DESCRIBED.
 HV8944
 HV8944                          STATION RECOVERY (2001)
 HV8944
 HV8944'RECOVERY NOTE BY JE CHANCE AND ASSOCIATES 2001 (CLG)
 HV8944'RECOVERED IN GOOD CONDITION.
 HV8944
 HV8944                          STATION RECOVERY (2002)
 HV8944
 HV8944'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2002 (MRY)
 HV8944'RECOVERED IN GOOD CONDITION.
 HV8944
 HV8944                          STATION RECOVERY (2002)
 HV8944
 HV8944'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2002
 HV8944'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6671 ***********************************************************************
 JV6671  DESIGNATION -  19704
 JV6671  PID         -  JV6671
 JV6671  STATE/COUNTY-  MD/MONTGOMERY
 JV6671  COUNTRY     -  US
 JV6671  USGS QUAD   -  BELTSVILLE (2016)
 JV6671
 JV6671                         *CURRENT SURVEY CONTROL
 JV6671  ______________________________________________________________________
 JV6671* NAD 83(2011) POSITION- 39 04 20.09867(N) 076 57 24.51428(W)   ADJUSTED
 JV6671* NAD 83(2011) ELLIP HT-    88.744 (meters)        (06/27/12)   ADJUSTED
 JV6671* NAD 83(2011) EPOCH   -  2010.00
 JV6671* NAVD 88 ORTHO HEIGHT -   120.8   (meters)      396.    (feet) GPS OBS
 JV6671  ______________________________________________________________________
 JV6671  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6671  GEOID HEIGHT    -        -32.410 (meters)                     GEOID93
 JV6671  GEOID HEIGHT    -        -32.043 (meters)                     GEOID18
 JV6671  NAD 83(2011) X  -  1,119,026.413 (meters)                     COMP
 JV6671  NAD 83(2011) Y  - -4,830,420.386 (meters)                     COMP
 JV6671  NAD 83(2011) Z  -  3,998,603.166 (meters)                     COMP
 JV6671  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 JV6671
 JV6671  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6671  Standards:
 JV6671         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6671            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6671  -------------------------------------------------------------------
 JV6671  NETWORK    0.77   1.53           0.30   0.33   0.78      0.09272984
 JV6671  -------------------------------------------------------------------
 JV6671  Click here for local accuracies and other accuracy information.
 JV6671
 JV6671.The horizontal coordinates were established by GPS observations
 JV6671.and adjusted by the National Geodetic Survey in June 2012.
 JV6671
 JV6671.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6671.been affixed to the stable North American tectonic plate. See 
 JV6671.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6671
 JV6671.The horizontal coordinates are valid at the epoch date displayed above
 JV6671.which is a decimal equivalence of Year/Month/Day.
 JV6671
 JV6671.The orthometric height was determined by GPS observations and a
 JV6671.high-resolution geoid model.
 JV6671
 JV6671.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6671.GEOID18 height accuracy estimate available here.
 JV6671
 JV6671.Click photographs - Photos may exist for this station.
 JV6671
 JV6671.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6671
 JV6671.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6671
 JV6671.The ellipsoidal height was determined by GPS observations
 JV6671.and is referenced to NAD 83.
 JV6671
 JV6671. The following values were computed from the NAD 83(2011) position.
 JV6671
 JV6671;                    North         East     Units Scale Factor Converg.
 JV6671;SPC MD       -   156,027.599   403,737.462   MT  0.99995571   +0 01 37.6
 JV6671;SPC MD       -   511,900.55  1,324,595.32   sFT  0.99995571   +0 01 37.6
 JV6671;UTM  18      - 4,326,616.625   330,722.054   MT  0.99995285   -1 14 01.2
 JV6671
 JV6671!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6671!SPC MD       -   0.99998608  x   0.99995571  =   0.99994179
 JV6671!UTM  18      -   0.99998608  x   0.99995285  =   0.99993893
 JV6671
 JV6671_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3072226616(NAD 83)
 JV6671
 JV6671                          SUPERSEDED SURVEY CONTROL
 JV6671
 JV6671  NAD 83(2007)-  39 04 20.09889(N)    076 57 24.51509(W) AD(2002.00) 0
 JV6671  ELLIP H (02/10/07)   88.772  (m)                       GP(2002.00)    
 JV6671  ELLIP H (08/30/02)   88.783  (m)                       GP(       ) 4 2
 JV6671  NAD 83(1991)-  39 04 20.09845(N)    076 57 24.51513(W) AD(       ) 1
 JV6671  ELLIP H (01/27/92)   88.700  (m)                       GP(       ) 4 1
 JV6671  NAD 83(1986)-  39 04 20.09730(N)    076 57 24.52530(W) AD(       ) 1
 JV6671  NGVD 29 (03/05/91)  121.0    (m)  OSU 89B  model used  GPS OBS        
 JV6671
 JV6671.Superseded values are not recommended for survey control.
 JV6671
 JV6671.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6671.See file dsdata.pdf to determine how the superseded data were derived.
 JV6671
 JV6671_MARKER: DD = SURVEY DISK
 JV6671_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6671_STAMPING: 19704
 JV6671_MARK LOGO: WSSC
 JV6671_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6671_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6671+STABILITY: SURFACE MOTION
 JV6671_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6671+SATELLITE: SATELLITE OBSERVATIONS - March 31, 1993
 JV6671
 JV6671  HISTORY     - Date     Condition        Report By
 JV6671  HISTORY     - 1989     MONUMENTED       WSSC
 JV6671  HISTORY     - 19930331 GOOD             MSI
 JV6671
 JV6671                          STATION DESCRIPTION
 JV6671
 JV6671'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6671'THE STATION IS LOCATED ABOUT 3.7 KM (2.3 MI) E OF COLESVILLE, 0.7 KM
 JV6671'(0.4 MI) N OF FAIRLAND, AND 4.4 KM (2.7 MI) SSE OF BURTONSVILLE. TO
 JV6671'REACH THE STATION FROM THE BRIDGE ON RTE 29 (COLESVILLE RD) WHERE IT
 JV6671'GOES OVER STATE HWY RTE 650 (NEW HAMPSHIRE AVE) IN WHITE OAK, GO NE
 JV6671'ALONG RTE 29 FOR 4.9 KM (3.0 MI) TO STATION ON TOP OF A SMALL KNOLL
 JV6671'ON THE NW SIDE OF THE STATE ROAD RIGHT OF WAY. OWNERSHIP--STATE ROAD
 JV6671'RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 JV6671'19704 SET IN THE TOP OF A ROUND CONCRETE MANUMENT 0.20 M (0.66 FT) IN
 JV6671'DIAMETER RECESSED 0.06 M (0.20 FT) IN THE GRASS. IT IS 42.49 M
 JV6671'(139.40 FT) NE OF THE TOP OF A FIRE HYDRANT, 7.53 M (24.70 FT) N OF
 JV6671'THE FACE OF A .1 M (0.3 FT) PEAR TREE, 26.57 M (87.17 FT) ENE OF THE
 JV6671'TOP AND CENTERLINE OF A 1.22 M (4.00 FT) DRIVEWAY LIGHT, 20.36 M
 JV6671'(66.80 FT) SE OF THE TOP AND CENTERLINE OF A 1.22 M (4.00 FT)
 JV6671'DRIVEWAY LIGHT, AND 7.41 M (24.31 FT) S OF THE FACE OF A .05 M
 JV6671'(0.16 FT) PINE. NO REFERENCES WERE ESTABLISHED AT THIS TIME. NO
 JV6671'STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 JV6671
 JV6671                          STATION RECOVERY (1993)
 JV6671
 JV6671'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV6671'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8945 ***********************************************************************
 HV8945  DESIGNATION -  19719
 HV8945  PID         -  HV8945
 HV8945  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8945  COUNTRY     -  US
 HV8945  USGS QUAD   -  ANACOSTIA (2016)
 HV8945
 HV8945                         *CURRENT SURVEY CONTROL
 HV8945  ______________________________________________________________________
 HV8945* NAD 83(2011) POSITION- 38 52 17.07560(N) 076 53 06.64298(W)   ADJUSTED
 HV8945* NAD 83(2011) ELLIP HT-    49.199 (meters)        (06/27/12)   ADJUSTED
 HV8945* NAD 83(2011) EPOCH   -  2010.00
 HV8945* NAVD 88 ORTHO HEIGHT -    81.6   (meters)      268.    (feet) GPS OBS
 HV8945  ______________________________________________________________________
 HV8945  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV8945  GEOID HEIGHT    -        -32.780 (meters)                     GEOID93
 HV8945  GEOID HEIGHT    -        -32.418 (meters)                     GEOID18
 HV8945  NAD 83(2011) X  -  1,128,239.413 (meters)                     COMP
 HV8945  NAD 83(2011) Y  - -4,842,644.993 (meters)                     COMP
 HV8945  NAD 83(2011) Z  -  3,981,243.808 (meters)                     COMP
 HV8945  LAPLACE CORR    -         -4.94  (seconds)                    DEFLEC18
 HV8945
 HV8945  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8945  Standards:
 HV8945         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8945            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8945  -------------------------------------------------------------------
 HV8945  NETWORK    0.82   1.78           0.35   0.32   0.91      0.03030230
 HV8945  -------------------------------------------------------------------
 HV8945  Click here for local accuracies and other accuracy information.
 HV8945
 HV8945.The horizontal coordinates were established by GPS observations
 HV8945.and adjusted by the National Geodetic Survey in June 2012.
 HV8945
 HV8945.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8945.been affixed to the stable North American tectonic plate. See 
 HV8945.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8945
 HV8945.The horizontal coordinates are valid at the epoch date displayed above
 HV8945.which is a decimal equivalence of Year/Month/Day.
 HV8945
 HV8945.The orthometric height was determined by GPS observations and a
 HV8945.high-resolution geoid model.
 HV8945
 HV8945.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8945.GEOID18 height accuracy estimate available here.
 HV8945
 HV8945.Click photographs - Photos may exist for this station.
 HV8945
 HV8945.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8945
 HV8945.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8945
 HV8945.The ellipsoidal height was determined by GPS observations
 HV8945.and is referenced to NAD 83.
 HV8945
 HV8945. The following values were computed from the NAD 83(2011) position.
 HV8945
 HV8945;                    North         East     Units Scale Factor Converg.
 HV8945;SPC MD       -   133,737.844   409,964.041   MT  0.99994985   +0 04 19.4
 HV8945;SPC MD       -   438,771.58  1,345,023.69   sFT  0.99994985   +0 04 19.4
 HV8945;UTM  18      - 4,304,195.776   336,457.685   MT  0.99992935   -1 11 00.1
 HV8945
 HV8945!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8945!SPC MD       -   0.99999228  x   0.99994985  =   0.99994213
 HV8945!UTM  18      -   0.99999228  x   0.99992935  =   0.99992163
 HV8945
 HV8945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3645704195(NAD 83)
 HV8945
 HV8945                          SUPERSEDED SURVEY CONTROL
 HV8945
 HV8945  NAD 83(2007)-  38 52 17.07609(N)    076 53 06.64381(W) AD(2002.00) 0
 HV8945  ELLIP H (02/10/07)   49.213  (m)                       GP(2002.00)    
 HV8945  ELLIP H (08/30/02)   49.208  (m)                       GP(       ) 4 2
 HV8945  NAD 83(1993)-  38 52 17.07646(N)    076 53 06.64409(W) AD(       ) 1
 HV8945  ELLIP H (11/14/94)   49.187  (m)                       GP(       ) 4 2
 HV8945  NAD 83(1991)-  38 52 17.07660(N)    076 53 06.64469(W) AD(       ) 1
 HV8945  ELLIP H (01/27/92)   49.184  (m)                       GP(       ) 4 1
 HV8945  NAD 83(1986)-  38 52 17.07513(N)    076 53 06.65537(W) AD(       ) 1
 HV8945  NGVD 29 (03/05/91)   81.8    (m)  OSU 89B  model used  GPS OBS        
 HV8945
 HV8945.Superseded values are not recommended for survey control.
 HV8945
 HV8945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8945.See file dsdata.pdf to determine how the superseded data were derived.
 HV8945
 HV8945_MARKER: DD = SURVEY DISK
 HV8945_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8945_STAMPING: 19719
 HV8945_MARK LOGO: WSSC
 HV8945_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8945_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8945+STABILITY: SURFACE MOTION
 HV8945_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8945+SATELLITE: SATELLITE OBSERVATIONS - March 31, 1993
 HV8945
 HV8945  HISTORY     - Date     Condition        Report By
 HV8945  HISTORY     - 1989     MONUMENTED       WSSC
 HV8945  HISTORY     - 19930331 GOOD             MSI
 HV8945
 HV8945                          STATION DESCRIPTION
 HV8945
 HV8945'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8945'THE STATION IS LOCATED ABOUT 1.6 KM (1.0 MI) N OF DISTRICT HEIGHTS,
 HV8945'2.7 KM (1.7 MI) SE OF CAPITOL HEIGHTS, 4.8 KM (3.0 MI) SW OF
 HV8945'LARGO. TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY RT
 HV8945'4 (PENN. AVE.) AND RT 458 (SILVER HILL RD) IN SUITLAND GO NE ALONG RT
 HV8945'458 1.8 KM (1.1 MI) TO WALKER MILL RD TURN RIGHT AND GO NE ON WALKER
 HV8945'MILL RD 1.4 KM (0.9 MI) TO AN ASPHALT DR AT BAYNE ELEMENTARY SCHOOL.
 HV8945'TURN LEFT AND GO NORTH 15.3 M (50.2 FT) TO THE STATION ON THE
 HV8945'LEFT. OWNERSHIP--COUNTY SCHOOL BOARD THE STATION MARK IS A STANDARD
 HV8945'WSSC BRASS DISK STAMPED 19719. SET IN THE TOP OF A ROUND CONCRETE
 HV8945'MONUMENT 0.2 M (0.7 FT) IN DIAMETER FLUSH WITH THE GROUND.  IT IS
 HV8945'10.47 M (34.35 FT) S OF A X CUT IN THE TOP OF A CURB AT THE SW CORNER
 HV8945'OF A PARKING LOT, 26.95 M (88.42 FT) ENE OF A REFERENCE NAIL IN THE
 HV8945'SE SIDE OF A PEPCO POLE NUMBER 832377-5295, AND 25.41 M (83.37 FT)
 HV8945'WNW OF A REF NAIL IN THE SW SIDE OF A PEPCO POLE NUMBER 832378-6703
 HV8945'NO REFERENCES WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS
 HV8945'AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 HV8945
 HV8945                          STATION RECOVERY (1993)
 HV8945
 HV8945'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV8945'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8946 ***********************************************************************
 HV8946  DESIGNATION -  19721
 HV8946  PID         -  HV8946
 HV8946  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8946  COUNTRY     -  US
 HV8946  USGS QUAD   -  UPPER MARLBORO (2016)
 HV8946
 HV8946                         *CURRENT SURVEY CONTROL
 HV8946  ______________________________________________________________________
 HV8946* NAD 83(2011) POSITION- 38 52 00.96788(N) 076 51 25.00993(W)   ADJUSTED
 HV8946* NAD 83(2011) ELLIP HT-    18.524 (meters)        (06/27/12)   ADJUSTED
 HV8946* NAD 83(2011) EPOCH   -  2010.00
 HV8946* NAVD 88 ORTHO HEIGHT -    51.0   (meters)      167.    (feet) VERTCON3
 HV8946  ______________________________________________________________________
 HV8946  GEOID HEIGHT    -        -32.500 (meters)                     GEOID18
 HV8946  NAD 83(2011) X  -  1,130,690.844 (meters)                     COMP
 HV8946  NAD 83(2011) Y  - -4,842,368.775 (meters)                     COMP
 HV8946  NAD 83(2011) Z  -  3,980,837.825 (meters)                     COMP
 HV8946  LAPLACE CORR    -         -5.33  (seconds)                    DEFLEC18
 HV8946
 HV8946  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8946  Standards:
 HV8946         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8946            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8946  -------------------------------------------------------------------
 HV8946  NETWORK    0.92   1.86           0.36   0.39   0.95     -0.00431389
 HV8946  -------------------------------------------------------------------
 HV8946  Click here for local accuracies and other accuracy information.
 HV8946
 HV8946.The horizontal coordinates were established by GPS observations
 HV8946.and adjusted by the National Geodetic Survey in June 2012.
 HV8946
 HV8946.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8946.been affixed to the stable North American tectonic plate. See 
 HV8946.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8946
 HV8946.The horizontal coordinates are valid at the epoch date displayed above
 HV8946.which is a decimal equivalence of Year/Month/Day.
 HV8946
 HV8946.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8946.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8946
 HV8946.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8946.GEOID18 height accuracy estimate available here.
 HV8946
 HV8946.Click photographs - Photos may exist for this station.
 HV8946
 HV8946.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8946
 HV8946.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8946
 HV8946.The ellipsoidal height was determined by GPS observations
 HV8946.and is referenced to NAD 83.
 HV8946
 HV8946. The following values were computed from the NAD 83(2011) position.
 HV8946
 HV8946;                    North         East     Units Scale Factor Converg.
 HV8946;SPC MD       -   133,244.617   412,414.699   MT  0.99994986   +0 05 23.2
 HV8946;SPC MD       -   437,153.38  1,353,063.89   sFT  0.99994986   +0 05 23.2
 HV8946;UTM  18      - 4,303,648.991   338,896.887   MT  0.99991960   -1 09 55.8
 HV8946
 HV8946!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8946!SPC MD       -   0.99999709  x   0.99994986  =   0.99994695
 HV8946!UTM  18      -   0.99999709  x   0.99991960  =   0.99991669
 HV8946
 HV8946_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3889603648(NAD 83)
 HV8946
 HV8946                          SUPERSEDED SURVEY CONTROL
 HV8946
 HV8946  NAD 83(2007)-  38 52 00.96830(N)    076 51 25.01074(W) AD(2002.00) 0
 HV8946  ELLIP H (02/10/07)   18.536  (m)                       GP(2002.00)    
 HV8946  ELLIP H (08/30/02)   18.534  (m)                       GP(       ) 4 2
 HV8946  NAD 83(1993)-  38 52 00.96865(N)    076 51 25.01119(W) AD(       ) 1
 HV8946  ELLIP H (11/14/94)   18.506  (m)                       GP(       ) 4 2
 HV8946  NAD 83(1991)-  38 52 00.96876(N)    076 51 25.01160(W) AD(       ) 1
 HV8946  ELLIP H (01/27/92)   18.499  (m)                       GP(       ) 4 1
 HV8946  NAD 83(1986)-  38 52 00.96727(N)    076 51 25.02228(W) AD(       ) 1
 HV8946  NGVD 29 (03/05/91)   51.2    (m)  OSU 89B  model used  GPS OBS        
 HV8946
 HV8946.Superseded values are not recommended for survey control.
 HV8946
 HV8946.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8946.See file dsdata.pdf to determine how the superseded data were derived.
 HV8946
 HV8946_MARKER: DD = SURVEY DISK
 HV8946_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8946_STAMPING: 19721
 HV8946_MARK LOGO: WSSC
 HV8946_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8946_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8946+STABILITY: SURFACE MOTION
 HV8946_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8946+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HV8946
 HV8946  HISTORY     - Date     Condition        Report By
 HV8946  HISTORY     - 1989     MONUMENTED       WSSC
 HV8946
 HV8946                          STATION DESCRIPTION
 HV8946
 HV8946'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8946'THE STATION IS LOCATED ABOUT 3.2 KM (2.0 MI) NORTH OF FORESTVILLE, 4.0
 HV8946'KM (2.5 MI) SW OF LARGO, AND 1.6 KM (1.0 MI) NE OF DISTRICT
 HV8946'HEIGHTS. TO REACH THE STATION FROM THE UNDERPASS WHERE RTE 214
 HV8946'(CENTRAL AVE) PASSES UNDER INTERSTATE 95 IN HAMPTON GO WEST ON RTE
 HV8946'214 1.5 KM (0.9 MI) T0 RITCHIE ROAD, TURN LEFT AND GO SOUTH 2.4 KM
 HV8946'(1.5 MI) TO FOREST PARK DRIVE, TURN LEFT AND GO SE 0.2 KM (0.1 MI) TO
 HV8946'THE STATION ON THE RIGHT BEHIND THE CURB. OWNERSHIP--COUNTY ROAD
 HV8946'RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 HV8946'19721 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 HV8946'DIAMETER RECESSED 0.09 M (0.30 FT) IN THE GRASS. IT IS 1.74 M
 HV8946'(5.71 FT) SOUTH OF TOP AND CENTERLINE OF A FIRE HYDRANT, 28.32 M
 HV8946'(92.91 FT) EAST OF THE EAST CORNER OF A BRICK TOWNHOUSE NUMBER 1641,
 HV8946'AND 27.27 M (89.47 FT) ENE OF NORTH CORNER OF A BRICK TOWNHOUSE
 HV8946'NUMBER 1641. NO REFERENCES WERE ESTABLISHED AT THIS TIME. NO STATIONS
 HV8946'SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8947 ***********************************************************************
 HV8947  DESIGNATION -  19723
 HV8947  PID         -  HV8947
 HV8947  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8947  COUNTRY     -  US
 HV8947  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8947
 HV8947                         *CURRENT SURVEY CONTROL
 HV8947  ______________________________________________________________________
 HV8947* NAD 83(2011) POSITION- 38 53 15.86641(N) 076 52 59.07326(W)   ADJUSTED
 HV8947* NAD 83(2011) ELLIP HT-    26.011 (meters)        (06/27/12)   ADJUSTED
 HV8947* NAD 83(2011) EPOCH   -  2010.00
 HV8947* NAVD 88 ORTHO HEIGHT -    58.4   (meters)      192.    (feet) VERTCON3
 HV8947  ______________________________________________________________________
 HV8947  GEOID HEIGHT    -        -32.401 (meters)                     GEOID18
 HV8947  NAD 83(2011) X  -  1,128,154.789 (meters)                     COMP
 HV8947  NAD 83(2011) Y  - -4,841,477.737 (meters)                     COMP
 HV8947  NAD 83(2011) Z  -  3,982,640.569 (meters)                     COMP
 HV8947  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 HV8947
 HV8947  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8947  Standards:
 HV8947         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8947            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8947  -------------------------------------------------------------------
 HV8947  NETWORK    1.39   3.10           0.60   0.53   1.58     -0.15284884
 HV8947  -------------------------------------------------------------------
 HV8947  Click here for local accuracies and other accuracy information.
 HV8947
 HV8947.The horizontal coordinates were established by GPS observations
 HV8947.and adjusted by the National Geodetic Survey in June 2012.
 HV8947
 HV8947.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8947.been affixed to the stable North American tectonic plate. See 
 HV8947.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8947
 HV8947.The horizontal coordinates are valid at the epoch date displayed above
 HV8947.which is a decimal equivalence of Year/Month/Day.
 HV8947
 HV8947.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8947.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8947
 HV8947.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8947.GEOID18 height accuracy estimate available here.
 HV8947
 HV8947.Click photographs - Photos may exist for this station.
 HV8947
 HV8947.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8947
 HV8947.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8947
 HV8947.The ellipsoidal height was determined by GPS observations
 HV8947.and is referenced to NAD 83.
 HV8947
 HV8947. The following values were computed from the NAD 83(2011) position.
 HV8947
 HV8947;                    North         East     Units Scale Factor Converg.
 HV8947;SPC MD       -   135,550.915   410,144.188   MT  0.99994987   +0 04 24.2
 HV8947;SPC MD       -   444,719.96  1,345,614.72   sFT  0.99994987   +0 04 24.2
 HV8947;UTM  18      - 4,306,004.426   336,677.514   MT  0.99992847   -1 10 56.8
 HV8947
 HV8947!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8947!SPC MD       -   0.99999592  x   0.99994987  =   0.99994579
 HV8947!UTM  18      -   0.99999592  x   0.99992847  =   0.99992439
 HV8947
 HV8947_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3667706004(NAD 83)
 HV8947
 HV8947                          SUPERSEDED SURVEY CONTROL
 HV8947
 HV8947  NAD 83(2007)-  38 53 15.86683(N)    076 52 59.07400(W) AD(2002.00) 0
 HV8947  ELLIP H (02/10/07)   26.027  (m)                       GP(2002.00)    
 HV8947  ELLIP H (08/30/02)   26.021  (m)                       GP(       ) 4 2
 HV8947  NAD 83(1993)-  38 53 15.86743(N)    076 52 59.07425(W) AD(       ) 1
 HV8947  ELLIP H (11/14/94)   25.974  (m)                       GP(       ) 4 2
 HV8947  NAD 83(1991)-  38 53 15.86706(N)    076 52 59.07436(W) AD(       ) 1
 HV8947  ELLIP H (01/27/92)   25.975  (m)                       GP(       ) 4 1
 HV8947  NAD 83(1986)-  38 53 15.86553(N)    076 52 59.08503(W) AD(       ) 1
 HV8947  NGVD 29 (03/05/91)   58.6    (m)  OSU 89B  model used  GPS OBS        
 HV8947
 HV8947.Superseded values are not recommended for survey control.
 HV8947
 HV8947.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8947.See file dsdata.pdf to determine how the superseded data were derived.
 HV8947
 HV8947_MARKER: DD = SURVEY DISK
 HV8947_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8947_STAMPING: 19723
 HV8947_MARK LOGO: WSSC
 HV8947_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8947_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8947+STABILITY: SURFACE MOTION
 HV8947_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8947+SATELLITE: SATELLITE OBSERVATIONS - July 13, 1992
 HV8947
 HV8947  HISTORY     - Date     Condition        Report By
 HV8947  HISTORY     - 1989     MONUMENTED       WSSC
 HV8947  HISTORY     - 19920713 GOOD             NOS
 HV8947  HISTORY     - 20101027 MARK NOT FOUND   MDSHA
 HV8947
 HV8947                          STATION DESCRIPTION
 HV8947
 HV8947'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8947'THE STATION IS LOCATED ABOUT 4.6 KM (2.9 MI) WEST OF LARGO, 2.9 KM
 HV8947'(1.8 MI) EAST OF WASHINGTON, D.C., 3.0 KM (1.9 MI) NORTH OF DISTRICT
 HV8947'HEIGHTS. TO REACH THE STATION FROM THE UNDERPASS OF STATE ROUTE 214
 HV8947'(CENTRAL AVENUE) AND INTERSTATE 95 IN HAMPTON.  GO WEST ON ROUTE 214
 HV8947'3.1 KM (1.9 MI) TO THE STATION ON THE LEFT IN THE GRASS
 HV8947'ISLAND. OWNERSHIP--STATE HWY RIGHT-OF-WAY THE STATION MARK IS A
 HV8947'STANDARD WSSC BRASS DISK STAMPED 19723 SET IN THE TOP OF A ROUND
 HV8947'CONCRETE MONUMENT 0.20 M (0.66 FT) FLUSH IN THE GRASS ISLAND. IT IS
 HV8947'3.23 M (10.60 FT) NE OF A X CUT IN THE TOP CONCRETE CATCH BASIN,
 HV8947'31.00 M (101.71 FT) NW OF A REFERENCE NAIL IN THE SW SIDE OF PEPCO
 HV8947'POLE NUMBER 833383-3093, 31.82 M (104.40 FT) SW OF A REFERENCE NAIL
 HV8947'IN THE NE SIDE OF PEPCO POLE NUMBER 833384-2506, 38.72 M (127.03 FT)
 HV8947'SE OF A REFERENCE NAIL IN THE SW SIDE OF PEPCO POLE NUMBER
 HV8947'833384-0904. NO REFERENCES WERE ESTABLISHED AT THIS TIME. NO STATIONS
 HV8947'SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 HV8947
 HV8947                          STATION RECOVERY (1992)
 HV8947
 HV8947'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 HV8947'RECOVERED IN GOOD CONDITION.
 HV8947
 HV8947                          STATION RECOVERY (2010)
 HV8947
 HV8947'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (TPB)
 HV8947'POSSIBLY DESTROYED DUE TO CONSTRUCTION OF TURN LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8948 ***********************************************************************
 HV8948  DESIGNATION -  19728
 HV8948  PID         -  HV8948
 HV8948  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8948  COUNTRY     -  US
 HV8948  USGS QUAD   -  LANHAM (2016)
 HV8948
 HV8948                         *CURRENT SURVEY CONTROL
 HV8948  ______________________________________________________________________
 HV8948* NAD 83(2011) POSITION- 38 54 57.74158(N) 076 50 41.04142(W)   ADJUSTED
 HV8948* NAD 83(2011) ELLIP HT-    23.922 (meters)        (06/27/12)   ADJUSTED
 HV8948* NAD 83(2011) EPOCH   -  2010.00
 HV8948* NAVD 88 ORTHO HEIGHT -    56.4   (meters)      185.    (feet) VERTCON3
 HV8948  ______________________________________________________________________
 HV8948  GEOID HEIGHT    -        -32.464 (meters)                     GEOID18
 HV8948  NAD 83(2011) X  -  1,130,945.066 (meters)                     COMP
 HV8948  NAD 83(2011) Y  - -4,838,799.029 (meters)                     COMP
 HV8948  NAD 83(2011) Z  -  3,985,084.080 (meters)                     COMP
 HV8948  LAPLACE CORR    -         -5.15  (seconds)                    DEFLEC18
 HV8948
 HV8948  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8948  Standards:
 HV8948         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8948            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8948  -------------------------------------------------------------------
 HV8948  NETWORK    0.91   1.74           0.35   0.39   0.89      0.08503696
 HV8948  -------------------------------------------------------------------
 HV8948  Click here for local accuracies and other accuracy information.
 HV8948
 HV8948.The horizontal coordinates were established by GPS observations
 HV8948.and adjusted by the National Geodetic Survey in June 2012.
 HV8948
 HV8948.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8948.been affixed to the stable North American tectonic plate. See 
 HV8948.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8948
 HV8948.The horizontal coordinates are valid at the epoch date displayed above
 HV8948.which is a decimal equivalence of Year/Month/Day.
 HV8948
 HV8948.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8948.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8948
 HV8948.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8948.GEOID18 height accuracy estimate available here.
 HV8948
 HV8948.Click photographs - Photos may exist for this station.
 HV8948
 HV8948.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8948
 HV8948.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8948
 HV8948.The ellipsoidal height was determined by GPS observations
 HV8948.and is referenced to NAD 83.
 HV8948
 HV8948. The following values were computed from the NAD 83(2011) position.
 HV8948
 HV8948;                    North         East     Units Scale Factor Converg.
 HV8948;SPC MD       -   138,697.249   413,465.362   MT  0.99995009   +0 05 50.8
 HV8948;SPC MD       -   455,042.56  1,356,510.94   sFT  0.99995009   +0 05 50.8
 HV8948;UTM  18      - 4,309,077.107   340,066.770   MT  0.99991497   -1 09 32.7
 HV8948
 HV8948!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8948!SPC MD       -   0.99999625  x   0.99995009  =   0.99994634
 HV8948!UTM  18      -   0.99999625  x   0.99991497  =   0.99991122
 HV8948
 HV8948_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4006609077(NAD 83)
 HV8948
 HV8948                          SUPERSEDED SURVEY CONTROL
 HV8948
 HV8948  NAD 83(2007)-  38 54 57.74191(N)    076 50 41.04217(W) AD(2002.00) 0
 HV8948  ELLIP H (02/10/07)   23.946  (m)                       GP(2002.00)    
 HV8948  ELLIP H (08/30/02)   23.948  (m)                       GP(       ) 4 2
 HV8948  NAD 83(1991)-  38 54 57.74183(N)    076 50 41.04222(W) AD(       ) 1
 HV8948  ELLIP H (01/27/92)   23.895  (m)                       GP(       ) 4 1
 HV8948  NAD 83(1986)-  38 54 57.74024(N)    076 50 41.05289(W) AD(       ) 1
 HV8948  NGVD 29 (03/05/91)   56.7    (m)  OSU 89B  model used  GPS OBS        
 HV8948
 HV8948.Superseded values are not recommended for survey control.
 HV8948
 HV8948.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8948.See file dsdata.pdf to determine how the superseded data were derived.
 HV8948
 HV8948_MARKER: DD = SURVEY DISK
 HV8948_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8948_STAMPING: 19728
 HV8948_MARK LOGO: WSSC
 HV8948_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8948_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8948+STABILITY: SURFACE MOTION
 HV8948_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8948+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8948
 HV8948  HISTORY     - Date     Condition        Report By
 HV8948  HISTORY     - 1990     MONUMENTED       WSSC
 HV8948  HISTORY     - 20040304 MARK NOT FOUND   URS
 HV8948
 HV8948                          STATION DESCRIPTION
 HV8948
 HV8948'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8948'THE STATION IS LOCATED ABOUT 16.4 KM (10.2 MI) ENE OF WASHINGTON D.C.,
 HV8948'10.0 KM (6.2 MI) WEST OF BOWIE AND 13.0 KM (8.1 MI) NORTHWEST OF
 HV8948'UPPER MARLBORO, IN LARGO. TO REACH THE STATION FROM THE BRIDGE WHERE
 HV8948'MARYLAND ROUTE 202 (LANDOVER ROAD) CROSSES INTERSTATE I-95 (CAPITOL
 HV8948'BELTWAY) IN LANDOVER.  GO SOUTHEAST ON ROUTE 202 0.6 KM (0.4 MI) TO
 HV8948'THE STATION ON THE LEFT IN THE CENTER OF THE GRASS MEDIAN, 29.5 M
 HV8948'(96.8 FT) SOUTHEAST OF MCCORMICK DRIVE. OWNERSHIP--STATE ROAD
 HV8948'RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 HV8948'19728 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 HV8948'DIAMETER RECESSED 0.03 M (0.10 FT) IN THE GRASS. IT IS 9.1 M
 HV8948'(29.9 FT) NORTHEAST OF THE CENTERLINE OF THE SOUTH BOUND LANE OF
 HV8948'ROUTE 202 AND 12.1 M (39.7 FT) SOUTHWEST OF THE CENTERLINE OF THE
 HV8948'NORTHBOUND LANE OF ROUTE 202. NO REFERENCE MARKS WERE ESTABLISHED AT
 HV8948'THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT
 HV8948'THIS TIME.
 HV8948
 HV8948                          STATION RECOVERY (2004)
 HV8948
 HV8948'RECOVERY NOTE BY URS COMPANY 2004
 HV8948'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8930 ***********************************************************************
 HV8930  DESIGNATION -  19735
 HV8930  PID         -  HV8930
 HV8930  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8930  COUNTRY     -  US
 HV8930  USGS QUAD   -  BRANDYWINE (2016)
 HV8930
 HV8930                         *CURRENT SURVEY CONTROL
 HV8930  ______________________________________________________________________
 HV8930* NAD 83(1991) POSITION- 38 39 42.29680(N) 076 52 27.05659(W)   ADJUSTED
 HV8930* NAVD 88 ORTHO HEIGHT -    63.897 (meters)      209.64  (feet) ADJUSTED
 HV8930  ______________________________________________________________________
 HV8930  GEOID HEIGHT    -        -32.921 (meters)                     GEOID18
 HV8930  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 HV8930  DYNAMIC HEIGHT  -         63.860 (meters)      209.51  (feet) COMP
 HV8930  MODELED GRAVITY -    980,044.8   (mgal)                       NAVD 88
 HV8930
 HV8930  HORZ ORDER      -  SECOND
 HV8930  VERT ORDER      -  SECOND    CLASS I
 HV8930
 HV8930.The horizontal coordinates were established by classical geodetic methods
 HV8930.and adjusted by the National Geodetic Survey in January 1992.
 HV8930
 HV8930.The orthometric height was determined by differential leveling and
 HV8930.adjusted by the NATIONAL GEODETIC SURVEY
 HV8930.in August 1994.
 HV8930
 HV8930.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8930.GEOID18 height accuracy estimate available here.
 HV8930
 HV8930.Click photographs - Photos may exist for this station.
 HV8930
 HV8930.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8930
 HV8930.The dynamic height is computed by dividing the NAVD 88
 HV8930.geopotential number by the normal gravity value computed on the
 HV8930.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8930.degrees latitude (g = 980.6199 gals.).
 HV8930
 HV8930.The modeled gravity was interpolated from observed gravity values.
 HV8930
 HV8930. The following values were computed from the NAD 83(1991) position.
 HV8930
 HV8930;                    North         East     Units Scale Factor Converg.
 HV8930;SPC MD       -   110,465.577   410,950.353   MT  0.99995679   +0 04 44.3
 HV8930;SPC MD       -   362,419.15  1,348,259.62   sFT  0.99995679   +0 04 44.3
 HV8930;UTM  18      - 4,280,908.062   336,934.956   MT  0.99992745   -1 10 16.0
 HV8930
 HV8930!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8930!SPC MD       -   0.99999514  x   0.99995679  =   0.99995193
 HV8930!UTM  18      -   0.99999514  x   0.99992745  =   0.99992259
 HV8930
 HV8930_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3693480908(NAD 83)
 HV8930
 HV8930                          SUPERSEDED SURVEY CONTROL
 HV8930
 HV8930  NAD 83(1986)-  38 39 42.29581(N)    076 52 27.07204(W) AD(       ) 2
 HV8930  NGVD 29              64.12   (m)          210.4    (f) LEVELING    3  
 HV8930
 HV8930.Superseded values are not recommended for survey control.
 HV8930
 HV8930.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8930.See file dsdata.pdf to determine how the superseded data were derived.
 HV8930
 HV8930_MARKER: DD = SURVEY DISK
 HV8930_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8930_STAMPING: 19735 1990
 HV8930_MARK LOGO: WSSC
 HV8930_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8930_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8930+STABILITY: SURFACE MOTION
 HV8930_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8930+SATELLITE: SATELLITE OBSERVATIONS - September 14, 1990
 HV8930
 HV8930  HISTORY     - Date     Condition        Report By
 HV8930  HISTORY     - 1990     MONUMENTED       WSSC
 HV8930  HISTORY     - 19900914 GOOD             NGS
 HV8930
 HV8930                          STATION DESCRIPTION
 HV8930
 HV8930'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8930'THE MARKER IS LOCATED ABOUT 5.4 KM (3.4 MI) NORTHEAST OF WALDORK, 3.4
 HV8930'KM (2.1 MI) SOUTH OF T.B., ALONG THE WEST SIDE OF U.S. HIGHWAY 201
 HV8930'AND ABOUT 243.8 M (799.9 FT) SOUTH OF THE JUNCTION OF U.S. HIGHWAY
 HV8930'301 AND CEDARVILLE ROAD.  IT IS ON U.S. HIGHWAY 301 RIGHT-OF-WAY.
 HV8930'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND STATE HIGHWAY 5
 HV8930'AT WALDORF, GO NORTH ON U.S. HIGHWAY 301 FOR 5.0 KM (3.1 MI) TO A
 HV8930'LARGE BRICK HOUSE ON THE LEFT AND THE MARKER.
 HV8930'THE MARK IS A WASHINGTON SUBURBAN AND SANITARY COMMISSION DISK SET IN
 HV8930'A 0.25 M (0.82 FT) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 HV8930'SURFACE OF THE GROUND.  IT IS 23.5 M (77.1 FT) WEST OF THE CENTER OF
 HV8930'THE MEDIAN STRIP OF U.S. HIGHWAY 301, 29.53 M (96.88 FT)
 HV8930'SOUTH-SOUTHEAST OF A WOODEN FENCE CORNER, 17.61 M (57.78 FT)
 HV8930'EASE-NORTHEAST OF THE NORTHEAST CORNER OF THE 2-1/2 STORY BRICK HOUSE,
 HV8930'13.67 M (44.85 FT) EAST OF A PINE TREE AND 3.0 M (9.8 FT) NORTHEAST
 HV8930'OF A 1.0 M (3.3 FT) CEDAR TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2694 ***********************************************************************
 JV2694  DESIGNATION -  1976 WSSC
 JV2694  PID         -  JV2694
 JV2694  STATE/COUNTY-  MD/MONTGOMERY
 JV2694  COUNTRY     -  US
 JV2694  USGS QUAD   -  KENSINGTON (2016)
 JV2694
 JV2694                         *CURRENT SURVEY CONTROL
 JV2694  ______________________________________________________________________
 JV2694* NAD 83(1986) POSITION- 39 02 06.     (N) 077 04 08.     (W)   SCALED
 JV2694* NAVD 88 ORTHO HEIGHT -    97.970 (meters)      321.42  (feet) ADJUSTED
 JV2694  ______________________________________________________________________
 JV2694  GEOID HEIGHT    -        -31.879 (meters)                     GEOID18
 JV2694  DYNAMIC HEIGHT  -         97.917 (meters)      321.25  (feet) COMP
 JV2694  MODELED GRAVITY -    980,089.4   (mgal)                       NAVD 88
 JV2694
 JV2694  VERT ORDER      -  SECOND    CLASS 0
 JV2694
 JV2694.The horizontal coordinates were scaled from a map and have
 JV2694.an estimated accuracy of +/- 6 seconds.
 JV2694
 JV2694.The orthometric height was determined by differential leveling and
 JV2694.adjusted by the NATIONAL GEODETIC SURVEY
 JV2694.in June 1991.
 JV2694
 JV2694.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2694.GEOID18 height accuracy estimate available here.
 JV2694
 JV2694.Click photographs - Photos may exist for this station.
 JV2694
 JV2694.The dynamic height is computed by dividing the NAVD 88
 JV2694.geopotential number by the normal gravity value computed on the
 JV2694.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2694.degrees latitude (g = 980.6199 gals.).
 JV2694
 JV2694.The modeled gravity was interpolated from observed gravity values.
 JV2694
 JV2694;                    North         East    Units  Estimated Accuracy
 JV2694;SPC MD       -   151,890.      394,040.      MT  (+/- 180 meters Scaled)
 JV2694
 JV2694_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ209226(NAD 83)
 JV2694
 JV2694                          SUPERSEDED SURVEY CONTROL
 JV2694
 JV2694  NGVD 29 (11/26/84)   98.188  (m)          322.14   (f) ADJUSTED    2 0
 JV2694
 JV2694.Superseded values are not recommended for survey control.
 JV2694
 JV2694.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2694.See file dsdata.pdf to determine how the superseded data were derived.
 JV2694
 JV2694_MARKER: Z = SEE DESCRIPTION
 JV2694_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2694_SP_SET: CULVERT
 JV2694_STAMPING: WSSC 1976
 JV2694_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2694
 JV2694  HISTORY     - Date     Condition        Report By
 JV2694  HISTORY     - UNK      MONUMENTED       WSSC
 JV2694  HISTORY     - 1951     GOOD             CGS
 JV2694  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2694
 JV2694                          STATION DESCRIPTION
 JV2694
 JV2694'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2694'AT KENSINGTON.
 JV2694'AT KENSINGTON, MONTGOMERY COUNTY, ABOUT 0.6 MILE NORTHEASTWARD
 JV2694'ALONG STATE HIGHWAY 193 FROM THE CONCRETE BRIDGE OVER THE
 JV2694'BALTIMORE AND OHIO RAILROAD, AT A STREAM CROSSING JUST WEST OF
 JV2694'THE PLACE WHERE ST. PAUL STREET LEADS INTO STATE HIGHWAY 193
 JV2694'FROM THE SOUTHWARD, 10 YARDS SOUTH OF THE CENTER LINE OF STATE
 JV2694'HIGHWAY 193, WEST OF BOTH ST. PAUL STREET AND THE STREAM, AND ON
 JV2694'THE WEST END OF THE SOUTH HEAD WALL OF AN OLD CULVERT WHICH IS
 JV2694'NOT READILY VISIBLE FROM THE HIGHWAY.  A WASHINGTON SUBURBAN
 JV2694'SANITARY DISTRICT LAG SCREW AND WASHER STAMPED WSSC 1976.
 JV2694
 JV2694                          STATION RECOVERY (1987)
 JV2694
 JV2694'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2694'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1366 ***********************************************************************
 HV1366  DESIGNATION -  1977 WSSC
 HV1366  PID         -  HV1366
 HV1366  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1366  COUNTRY     -  US
 HV1366  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1366
 HV1366                         *CURRENT SURVEY CONTROL
 HV1366  ______________________________________________________________________
 HV1366* NAD 83(1986) POSITION- 38 56 48.     (N) 076 58 39.     (W)   SCALED
 HV1366* NAVD 88 ORTHO HEIGHT -    26.59  (+/-2cm)       87.2   (feet) VERTCON3
 HV1366  ______________________________________________________________________
 HV1366  GEOID HEIGHT    -        -32.085 (meters)                     GEOID18
 HV1366  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1366
 HV1366.The horizontal coordinates were scaled from a map and have
 HV1366.an estimated accuracy of +/- 6 seconds.
 HV1366
 HV1366.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1366.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1366
 HV1366.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1366.GEOID18 height accuracy estimate available here.
 HV1366
 HV1366.The vertical order pertains to the NGVD 29 superseded value.
 HV1366
 HV1366.Click photographs - Photos may exist for this station.
 HV1366
 HV1366;                    North         East    Units  Estimated Accuracy
 HV1366;SPC MD       -   142,090.      401,950.      MT  (+/- 180 meters Scaled)
 HV1366
 HV1366_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ286127(NAD 83)
 HV1366
 HV1366                          SUPERSEDED SURVEY CONTROL
 HV1366
 HV1366  NGVD 29 (11/26/84)   26.811  (m)           87.96   (f) ADJUSTED    2 0
 HV1366
 HV1366.Superseded values are not recommended for survey control.
 HV1366
 HV1366.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1366.See file dsdata.pdf to determine how the superseded data were derived.
 HV1366
 HV1366_MARKER: B = BOLT
 HV1366_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1366_SP_SET: SIDEWALK
 HV1366_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1366
 HV1366  HISTORY     - Date     Condition        Report By
 HV1366  HISTORY     - UNK      MONUMENTED       WSSC
 HV1366  HISTORY     - 1944     GOOD             WSSC
 HV1366
 HV1366                          STATION DESCRIPTION
 HV1366
 HV1366'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1366'AT AVONDALE.
 HV1366'ABOUT 200 FEET NORTH OF QUEENS CHAPEL ROAD, 100 FEET EAST OF
 HV1366'LA SALLE ROAD, AT THE INTERSECTION OF AVONDALE ROAD AND A CROSS
 HV1366'ROAD CONNECTING AVONDALE AND LA SALLE ROADS, IN A PUBLIC PARK,
 HV1366'AT AN ANGLE IN THE WALK, AND 7 FEET SOUTH OF A SHRUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6672 ***********************************************************************
 JV6672  DESIGNATION -  19771
 JV6672  PID         -  JV6672
 JV6672  STATE/COUNTY-  MD/MONTGOMERY
 JV6672  COUNTRY     -  US
 JV6672  USGS QUAD   -  GAITHERSBURG (2016)
 JV6672
 JV6672                         *CURRENT SURVEY CONTROL
 JV6672  ______________________________________________________________________
 JV6672* NAD 83(2011) POSITION- 39 08 23.89173(N) 077 09 03.35825(W)   ADJUSTED
 JV6672* NAD 83(2011) ELLIP HT-    97.179 (meters)        (06/27/12)   ADJUSTED
 JV6672* NAD 83(2011) EPOCH   -  2010.00
 JV6672* NAVD 88 ORTHO HEIGHT -   129.0   (meters)      423.    (feet) VERTCON3
 JV6672  ______________________________________________________________________
 JV6672  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 JV6672  NAD 83(2011) X  -  1,101,600.985 (meters)                     COMP
 JV6672  NAD 83(2011) Y  - -4,829,566.948 (meters)                     COMP
 JV6672  NAD 83(2011) Z  -  4,004,442.490 (meters)                     COMP
 JV6672  LAPLACE CORR    -         -0.99  (seconds)                    DEFLEC18
 JV6672
 JV6672  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6672  Standards:
 JV6672         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6672            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6672  -------------------------------------------------------------------
 JV6672  NETWORK    1.21   2.29           0.44   0.52   1.17      0.40369031
 JV6672  -------------------------------------------------------------------
 JV6672  Click here for local accuracies and other accuracy information.
 JV6672
 JV6672.The horizontal coordinates were established by GPS observations
 JV6672.and adjusted by the National Geodetic Survey in June 2012.
 JV6672
 JV6672.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6672.been affixed to the stable North American tectonic plate. See 
 JV6672.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6672
 JV6672.The horizontal coordinates are valid at the epoch date displayed above
 JV6672.which is a decimal equivalence of Year/Month/Day.
 JV6672
 JV6672.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6672.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6672
 JV6672.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6672.GEOID18 height accuracy estimate available here.
 JV6672
 JV6672.Click photographs - Photos may exist for this station.
 JV6672
 JV6672.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6672
 JV6672.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6672
 JV6672.The ellipsoidal height was determined by GPS observations
 JV6672.and is referenced to NAD 83.
 JV6672
 JV6672. The following values were computed from the NAD 83(2011) position.
 JV6672
 JV6672;                    North         East     Units Scale Factor Converg.
 JV6672;SPC MD       -   163,555.324   386,951.552   MT  0.99996045   -0 05 41.0
 JV6672;SPC MD       -   536,597.76  1,269,523.55   sFT  0.99996045   -0 05 41.0
 JV6672;UTM  18      - 4,334,512.476   314,105.504   MT  1.00002552   -1 21 29.1
 JV6672
 JV6672!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6672!SPC MD       -   0.99998475  x   0.99996045  =   0.99994520
 JV6672!UTM  18      -   0.99998475  x   1.00002552  =   1.00001027
 JV6672
 JV6672_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1410534512(NAD 83)
 JV6672
 JV6672                          SUPERSEDED SURVEY CONTROL
 JV6672
 JV6672  NAD 83(2007)-  39 08 23.89195(N)    077 09 03.35902(W) AD(2002.00) 0
 JV6672  ELLIP H (02/10/07)   97.212  (m)                       GP(2002.00)    
 JV6672  ELLIP H (08/30/02)   97.223  (m)                       GP(       ) 4 2
 JV6672  ELLIP H (04/01/98)   97.195  (m)                       GP(       ) 4 1
 JV6672  NAD 83(1993)-  39 08 23.89184(N)    077 09 03.35913(W) AD(       ) 1
 JV6672  ELLIP H (11/14/94)   97.145  (m)                       GP(       ) 4 2
 JV6672  NAD 83(1991)-  39 08 23.89145(N)    077 09 03.35907(W) AD(       ) 1
 JV6672  ELLIP H (01/27/92)   97.134  (m)                       GP(       ) 4 1
 JV6672  NAD 83(1986)-  39 08 23.89115(N)    077 09 03.36928(W) AD(       ) 1
 JV6672  NGVD 29 (03/05/91)  129.2    (m)  OSU 89B  model used  GPS OBS        
 JV6672
 JV6672.Superseded values are not recommended for survey control.
 JV6672
 JV6672.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6672.See file dsdata.pdf to determine how the superseded data were derived.
 JV6672
 JV6672_MARKER: DD = SURVEY DISK
 JV6672_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6672_STAMPING: 19771
 JV6672_MARK LOGO: WSSC
 JV6672_PROJECTION: FLUSH
 JV6672_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6672_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6672+STABILITY: SURFACE MOTION
 JV6672_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6672+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2022
 JV6672
 JV6672  HISTORY     - Date     Condition        Report By
 JV6672  HISTORY     - 1989     MONUMENTED       WSSC
 JV6672  HISTORY     - 20021017 MARK NOT FOUND   POWELL
 JV6672  HISTORY     - 20050106 GOOD             URS
 JV6672  HISTORY     - 20091215 GOOD             NGS
 JV6672  HISTORY     - 20220310 GOOD             NGS
 JV6672
 JV6672                          STATION DESCRIPTION
 JV6672
 JV6672'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6672'THE STATION IS LOCATED ABOUT 3.4 KM (2.1 MI) EAST OF GAITHERSBURG, 4.0
 JV6672'KM (2.5 MI) NORTH OF ROCKVILLE, AND 1.5 KM (0.9 MI) SW OF REDLAND. TO
 JV6672'REACH THE STATION FROM THE INTERSECTION OF STATE ROADS RTE 124
 JV6672'(GAITHERSBURG LAYTONSVILLE RD) AND RTE 115 (MUNCASTER MILL RD) IN
 JV6672'EMORY GROVE GO SE ON RTE 115 1.6 KM (1.0 MI) TO SHADY GROVE RD TURN
 JV6672'RIGHT GO SW 1.4 KM (0.9 MI) TO TUPELO DR TURN LEFT AND GO EAST 0.2 KM
 JV6672'(0.1 MI) TO FOUNDERS MILL RD TURN LEFT AND GO NORTH 0.3 KM (0.2 MI)
 JV6672'TO STATION ON THE RIGHT AT THE TOP OF A BANK WEST OF A CREEK AND 8.2 M
 JV6672'(26.9 FT) SOUTH OF THE CENTERLINE OF THE ROAD. OWNERSHIP--COUNTY ROAD
 JV6672'RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 JV6672'19771 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.20 M (0.66 FT) IN
 JV6672'DIAMETER FLUSH IN THE GRASS. IT IS 29.93 M (98.20 FT) SE OF THE EAST
 JV6672'CORNER OF A GARAGE AT HOUSE NUMBER 17301, 33.45 M (109.74 FT) SE OF
 JV6672'THE WEST CORNER OF A GARAGE AT HOUSE NUMBER 17301, 16.74 M
 JV6672'(54.92 FT) SSW OF A LIGHT POLE, AND 49.81 M (163.42 FT) NW OF A LIGHT
 JV6672'POLE. NO REFERENCES WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE
 JV6672'AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 JV6672
 JV6672                          STATION RECOVERY (2002)
 JV6672
 JV6672'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV6672'MARK NOT RECOVERED, TIES ARE INADEQUATE
 JV6672
 JV6672                          STATION RECOVERY (2005)
 JV6672
 JV6672'RECOVERY NOTE BY URS COMPANY 2005 (JP)
 JV6672'RECOVERED IN GOOD CONDITION.
 JV6672
 JV6672                          STATION RECOVERY (2009)
 JV6672
 JV6672'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV6672'MARK IS 4.38 M (14.4 FT) SOUTH OF THE BACK OF THE CURB OF FOUNDERS
 JV6672'MILL DR.
 JV6672
 JV6672                          STATION RECOVERY (2022)
 JV6672
 JV6672'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (KA)
 JV6672'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6673 ***********************************************************************
 JV6673  DESIGNATION -  19772
 JV6673  PID         -  JV6673
 JV6673  STATE/COUNTY-  MD/MONTGOMERY
 JV6673  COUNTRY     -  US
 JV6673  USGS QUAD   -  GAITHERSBURG (2016)
 JV6673
 JV6673                         *CURRENT SURVEY CONTROL
 JV6673  ______________________________________________________________________
 JV6673* NAD 83(2011) POSITION- 39 09 35.11244(N) 077 12 06.12677(W)   ADJUSTED
 JV6673* NAD 83(2011) ELLIP HT-   100.946 (meters)        (06/27/12)   ADJUSTED
 JV6673* NAD 83(2011) EPOCH   -  2010.00
 JV6673* NAVD 88 ORTHO HEIGHT -   132.8   (meters)      436.    (feet) VERTCON3
 JV6673  ______________________________________________________________________
 JV6673  GEOID HEIGHT    -        -31.754 (meters)                     GEOID18
 JV6673  NAD 83(2011) X  -  1,097,014.608 (meters)                     COMP
 JV6673  NAD 83(2011) Y  - -4,829,191.786 (meters)                     COMP
 JV6673  NAD 83(2011) Z  -  4,006,148.146 (meters)                     COMP
 JV6673  LAPLACE CORR    -          1.23  (seconds)                    DEFLEC18
 JV6673
 JV6673  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6673  Standards:
 JV6673         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6673            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6673  -------------------------------------------------------------------
 JV6673  NETWORK    1.26   2.92           0.48   0.51   1.49      0.52538739
 JV6673  -------------------------------------------------------------------
 JV6673  Click here for local accuracies and other accuracy information.
 JV6673
 JV6673.The horizontal coordinates were established by GPS observations
 JV6673.and adjusted by the National Geodetic Survey in June 2012.
 JV6673
 JV6673.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6673.been affixed to the stable North American tectonic plate. See 
 JV6673.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6673
 JV6673.The horizontal coordinates are valid at the epoch date displayed above
 JV6673.which is a decimal equivalence of Year/Month/Day.
 JV6673
 JV6673.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6673.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6673
 JV6673.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6673.GEOID18 height accuracy estimate available here.
 JV6673
 JV6673.Click photographs - Photos may exist for this station.
 JV6673
 JV6673.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6673
 JV6673.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6673
 JV6673.The ellipsoidal height was determined by GPS observations
 JV6673.and is referenced to NAD 83.
 JV6673
 JV6673. The following values were computed from the NAD 83(2011) position.
 JV6673
 JV6673;                    North         East     Units Scale Factor Converg.
 JV6673;SPC MD       -   165,760.046   382,567.326   MT  0.99996210   -0 07 35.7
 JV6673;SPC MD       -   543,831.08  1,255,139.64   sFT  0.99996210   -0 07 35.7
 JV6673;UTM  18      - 4,336,813.526   309,770.648   MT  1.00004559   -1 23 26.7
 JV6673
 JV6673!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6673!SPC MD       -   0.99998416  x   0.99996210  =   0.99994626
 JV6673!UTM  18      -   0.99998416  x   1.00004559  =   1.00002975
 JV6673
 JV6673_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0977036813(NAD 83)
 JV6673
 JV6673                          SUPERSEDED SURVEY CONTROL
 JV6673
 JV6673  NAD 83(2007)-  39 09 35.11264(N)    077 12 06.12756(W) AD(2002.00) 0
 JV6673  ELLIP H (02/10/07)  100.979  (m)                       GP(2002.00)    
 JV6673  ELLIP H (08/30/02)  100.995  (m)                       GP(       ) 4 2
 JV6673  ELLIP H (04/01/98)  100.944  (m)                       GP(       ) 4 1
 JV6673  NAD 83(1993)-  39 09 35.11227(N)    077 12 06.12734(W) AD(       ) 1
 JV6673  ELLIP H (11/14/94)  100.920  (m)                       GP(       ) 4 2
 JV6673  NAD 83(1991)-  39 09 35.11197(N)    077 12 06.12730(W) AD(       ) 1
 JV6673  ELLIP H (01/27/92)  100.918  (m)                       GP(       ) 4 1
 JV6673  NAD 83(1986)-  39 09 35.11173(N)    077 12 06.13755(W) AD(       ) 1
 JV6673  NGVD 29 (03/05/91)  133.0    (m)  OSU 89B  model used  GPS OBS        
 JV6673
 JV6673.Superseded values are not recommended for survey control.
 JV6673
 JV6673.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6673.See file dsdata.pdf to determine how the superseded data were derived.
 JV6673
 JV6673_MARKER: DD = SURVEY DISK
 JV6673_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6673_STAMPING: 19772
 JV6673_MARK LOGO: WSSC
 JV6673_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6673_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6673+STABILITY: SURFACE MOTION
 JV6673_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6673+SATELLITE: SATELLITE OBSERVATIONS - April 01, 2008
 JV6673
 JV6673  HISTORY     - Date     Condition        Report By
 JV6673  HISTORY     - 1989     MONUMENTED       WSSC
 JV6673  HISTORY     - 20050105 GOOD             URS
 JV6673  HISTORY     - 20080401 GOOD             NGS
 JV6673
 JV6673                          STATION DESCRIPTION
 JV6673
 JV6673'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6673'THE STATION IS LOCATED ABOUT 8.1 KM (5.0 MI) NORTH OF ROCKVILLE, 4.0
 JV6673'KM (2.5 MI) NW OF REDLAND, AND 8.1 KM (5.0 MI) SE OF LAYTONSVILLE. TO
 JV6673'REACH THE STATION FROM THE UNDERPASS STATE HWY RTE 124 (MONTGOMERY
 JV6673'VILLAGE AVE) AND INTERSTATE 270 IN GAITHERSBURG GO NE ON RTE 124 1.8
 JV6673'KM (1.1 MI) TO MID COUNTY HWY.  STATION IS ON THE SOUTH CORNER OF
 JV6673'THIS INTERSECTION ON TOP OF A KNOLL. OWNERSHIP--COUNTY ROAD
 JV6673'RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 JV6673'19772 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 JV6673'DIAMETER SET FLUSH IN THE GRASS. IT IS 13.16 M (43.18 FT) NE OF A REF
 JV6673'NAIL IN THE NW SIDE OF A 0.1 M (0.3 FT) OAK, 27.72 M (90.94 FT) NORTH
 JV6673'OF A REF NAIL IN THE WEST SIDE OF A 0.3 M (1.0 FT) OAK, 30.12 M
 JV6673'(98.82 FT) SW OF REF NAIL IN THE SOUTH SIDE OF A 0.25 M (0.82 FT)
 JV6673'OAK, AND 14.38 M (47.18 FT) SOUTH OF A LIGHT POLE. NO REFERENCES WERE
 JV6673'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 JV6673'STATION AT THIS TIME.
 JV6673
 JV6673                          STATION RECOVERY (2005)
 JV6673
 JV6673'RECOVERY NOTE BY URS COMPANY 2005 (JP)
 JV6673'RECOVERED IN GOOD CONDITION.
 JV6673
 JV6673                          STATION RECOVERY (2008)
 JV6673
 JV6673'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV6673'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6674 ***********************************************************************
 JV6674  DESIGNATION -  19775
 JV6674  PID         -  JV6674
 JV6674  STATE/COUNTY-  MD/MONTGOMERY
 JV6674  COUNTRY     -  US
 JV6674  USGS QUAD   -  GERMANTOWN (2016)
 JV6674
 JV6674                         *CURRENT SURVEY CONTROL
 JV6674  ______________________________________________________________________
 JV6674* NAD 83(2011) POSITION- 39 09 54.57178(N) 077 16 24.53487(W)   ADJUSTED
 JV6674* NAD 83(2011) ELLIP HT-   105.170 (meters)        (06/27/12)   ADJUSTED
 JV6674* NAD 83(2011) EPOCH   -  2010.00
 JV6674* NAVD 88 ORTHO HEIGHT -   137.0   (meters)      449.    (feet) VERTCON3
 JV6674  ______________________________________________________________________
 JV6674  GEOID HEIGHT    -        -31.834 (meters)                     GEOID18
 JV6674  NAD 83(2011) X  -  1,090,880.981 (meters)                     COMP
 JV6674  NAD 83(2011) Y  - -4,830,195.859 (meters)                     COMP
 JV6674  NAD 83(2011) Z  -  4,006,616.112 (meters)                     COMP
 JV6674  LAPLACE CORR    -          2.71  (seconds)                    DEFLEC18
 JV6674
 JV6674  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6674  Standards:
 JV6674         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6674            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6674  -------------------------------------------------------------------
 JV6674  NETWORK    0.92   2.00           0.36   0.37   1.02      0.43516449
 JV6674  -------------------------------------------------------------------
 JV6674  Click here for local accuracies and other accuracy information.
 JV6674
 JV6674.The horizontal coordinates were established by GPS observations
 JV6674.and adjusted by the National Geodetic Survey in June 2012.
 JV6674
 JV6674.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6674.been affixed to the stable North American tectonic plate. See 
 JV6674.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6674
 JV6674.The horizontal coordinates are valid at the epoch date displayed above
 JV6674.which is a decimal equivalence of Year/Month/Day.
 JV6674
 JV6674.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6674.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6674
 JV6674.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6674.GEOID18 height accuracy estimate available here.
 JV6674
 JV6674.Click photographs - Photos may exist for this station.
 JV6674
 JV6674.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6674
 JV6674.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6674
 JV6674.The ellipsoidal height was determined by GPS observations
 JV6674.and is referenced to NAD 83.
 JV6674
 JV6674. The following values were computed from the NAD 83(2011) position.
 JV6674
 JV6674;                    North         East     Units Scale Factor Converg.
 JV6674;SPC MD       -   166,376.263   376,365.341   MT  0.99996257   -0 10 17.9
 JV6674;SPC MD       -   545,852.79  1,234,791.96   sFT  0.99996257   -0 10 17.9
 JV6674;UTM  18      - 4,337,566.522   303,583.165   MT  1.00007505   -1 26 10.7
 JV6674
 JV6674!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6674!SPC MD       -   0.99998350  x   0.99996257  =   0.99994607
 JV6674!UTM  18      -   0.99998350  x   1.00007505  =   1.00005855
 JV6674
 JV6674_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0358337566(NAD 83)
 JV6674
 JV6674                          SUPERSEDED SURVEY CONTROL
 JV6674
 JV6674  NAD 83(2007)-  39 09 54.57200(N)    077 16 24.53566(W) AD(2002.00) 0
 JV6674  ELLIP H (02/10/07)  105.202  (m)                       GP(2002.00)    
 JV6674  ELLIP H (08/30/02)  105.198  (m)                       GP(       ) 4 2
 JV6674  NAD 83(1993)-  39 09 54.57203(N)    077 16 24.53570(W) AD(       ) 1
 JV6674  ELLIP H (11/14/94)  105.130  (m)                       GP(       ) 4 2
 JV6674  NAD 83(1991)-  39 09 54.57159(N)    077 16 24.53518(W) AD(       ) 1
 JV6674  ELLIP H (01/27/92)  105.122  (m)                       GP(       ) 4 1
 JV6674  NAD 83(1986)-  39 09 54.57143(N)    077 16 24.54600(W) AD(       ) 1
 JV6674  NGVD 29 (03/05/91)  137.2    (m)  OSU 89B  model used  GPS OBS        
 JV6674
 JV6674.Superseded values are not recommended for survey control.
 JV6674
 JV6674.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6674.See file dsdata.pdf to determine how the superseded data were derived.
 JV6674
 JV6674_MARKER: DD = SURVEY DISK
 JV6674_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6674_STAMPING: T.S. 19975
 JV6674_MARK LOGO: WSSC
 JV6674_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6674_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6674+STABILITY: SURFACE MOTION
 JV6674_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6674+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6674
 JV6674  HISTORY     - Date     Condition        Report By
 JV6674  HISTORY     - 1989     MONUMENTED       WSSC
 JV6674  HISTORY     - 19971203 GOOD             DMW
 JV6674
 JV6674                          STATION DESCRIPTION
 JV6674
 JV6674'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6674'THE STATION IS LOCATED ABOUT 4.0 KM (2.5 MI) W OF GAITHERSBURG, 1.6 KM
 JV6674'(1.0 MI) SOUTH OF GERMANTOWN AND 4.3 KM (2.7 MI) SOUTHEAST OF
 JV6674'BOYDS. TO REACH THE STATION FROM THE INTERSECTION OF STATE ROADS
 JV6674'ROUTE 118 (DARNESTOWN-GERMANTOWN ROAD) AND ROUTE 117 (CLOPPER ROAD)
 JV6674'IN GERMANTOWN GO SE ALONG ROUTE 117 .6 KM (0.4 MI) TO GREAT SENECA
 JV6674'HIGHWAY. TURN LEFT AND GO N 7 KM (4.3 MI) TO THE STATION ON THE LEFT
 JV6674'AT THE TOP OF THE HILL 1.0 M (3.3 FT) EAST OF WIRE
 JV6674'FENCE. OWNERSHIP--COUNTY ROAD RIGHT-OF-WAY THE STATION MARK IS A
 JV6674'STANDARD WSSC BRASS DISK STAMPED 19775 SET IN THE TOP OF A ROUND
 JV6674'CONCRETE MONUMENT 0.20 M (0.66 FT) IN DIAMETER, RECESSED, 0.06 M
 JV6674'(0.20 FT) IN THE GRASS.   IT IS 6.74 M (22.11 FT) SOUTH OF AN ANGLE
 JV6674'POINT IN A WIRE FENCE, 1.0 M (3.3 FT) EAST OF A WIRE FENCE. NO
 JV6674'REFERENCES WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS
 JV6674'AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 JV6674
 JV6674                          STATION RECOVERY (1997)
 JV6674
 JV6674'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6674'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6675 ***********************************************************************
 JV6675  DESIGNATION -  19777
 JV6675  PID         -  JV6675
 JV6675  STATE/COUNTY-  MD/MONTGOMERY
 JV6675  COUNTRY     -  US
 JV6675  USGS QUAD   -  GAITHERSBURG (2016)
 JV6675
 JV6675                         *CURRENT SURVEY CONTROL
 JV6675  ______________________________________________________________________
 JV6675* NAD 83(2011) POSITION- 39 07 33.04548(N) 077 14 05.41697(W)   ADJUSTED
 JV6675* NAD 83(2011) ELLIP HT-    91.205 (meters)        (06/27/12)   ADJUSTED
 JV6675* NAD 83(2011) EPOCH   -  2010.00
 JV6675* NAVD 88 ORTHO HEIGHT -   123.0   (meters)      404.    (feet) VERTCON3
 JV6675  ______________________________________________________________________
 JV6675  GEOID HEIGHT    -        -31.750 (meters)                     GEOID18
 JV6675  NAD 83(2011) X  -  1,094,744.921 (meters)                     COMP
 JV6675  NAD 83(2011) Y  - -4,832,135.621 (meters)                     COMP
 JV6675  NAD 83(2011) Z  -  4,003,222.418 (meters)                     COMP
 JV6675  LAPLACE CORR    -          1.64  (seconds)                    DEFLEC18
 JV6675
 JV6675  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6675  Standards:
 JV6675         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6675            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6675  -------------------------------------------------------------------
 JV6675  NETWORK    2.21   5.21           0.83   0.89   2.66      0.58490522
 JV6675  -------------------------------------------------------------------
 JV6675  Click here for local accuracies and other accuracy information.
 JV6675
 JV6675.The horizontal coordinates were established by GPS observations
 JV6675.and adjusted by the National Geodetic Survey in June 2012.
 JV6675
 JV6675.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6675.been affixed to the stable North American tectonic plate. See 
 JV6675.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6675
 JV6675.The horizontal coordinates are valid at the epoch date displayed above
 JV6675.which is a decimal equivalence of Year/Month/Day.
 JV6675
 JV6675.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6675.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6675
 JV6675.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6675.GEOID18 height accuracy estimate available here.
 JV6675
 JV6675.Click photographs - Photos may exist for this station.
 JV6675
 JV6675.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6675
 JV6675.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6675
 JV6675.The ellipsoidal height was determined by GPS observations
 JV6675.and is referenced to NAD 83.
 JV6675
 JV6675. The following values were computed from the NAD 83(2011) position.
 JV6675
 JV6675;                    North         East     Units Scale Factor Converg.
 JV6675;SPC MD       -   162,002.705   379,693.758   MT  0.99995934   -0 08 50.6
 JV6675;SPC MD       -   531,503.87  1,245,711.94   sFT  0.99995934   -0 08 50.6
 JV6675;UTM  18      - 4,333,120.134   306,814.642   MT  1.00005955   -1 24 38.4
 JV6675
 JV6675!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6675!SPC MD       -   0.99998569  x   0.99995934  =   0.99994503
 JV6675!UTM  18      -   0.99998569  x   1.00005955  =   1.00004524
 JV6675
 JV6675_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0681433120(NAD 83)
 JV6675
 JV6675                          SUPERSEDED SURVEY CONTROL
 JV6675
 JV6675  NAD 83(2007)-  39 07 33.04566(N)    077 14 05.41775(W) AD(2002.00) 0
 JV6675  ELLIP H (02/10/07)   91.239  (m)                       GP(2002.00)    
 JV6675  ELLIP H (08/30/02)   91.238  (m)                       GP(       ) 4 2
 JV6675  ELLIP H (04/01/98)   91.214  (m)                       GP(       ) 4 1
 JV6675  NAD 83(1993)-  39 07 33.04555(N)    077 14 05.41754(W) AD(       ) 1
 JV6675  ELLIP H (11/14/94)   91.160  (m)                       GP(       ) 4 2
 JV6675  NAD 83(1991)-  39 07 33.04508(N)    077 14 05.41765(W) AD(       ) 1
 JV6675  ELLIP H (01/27/92)   91.157  (m)                       GP(       ) 4 1
 JV6675  NAD 83(1986)-  39 07 33.04495(N)    077 14 05.42768(W) AD(       ) 1
 JV6675  NGVD 29 (03/05/91)  123.3    (m)  OSU 89B  model used  GPS OBS        
 JV6675
 JV6675.Superseded values are not recommended for survey control.
 JV6675
 JV6675.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6675.See file dsdata.pdf to determine how the superseded data were derived.
 JV6675
 JV6675_MARKER: DD = SURVEY DISK
 JV6675_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6675_STAMPING: 19777
 JV6675_MARK LOGO: WSSC
 JV6675_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6675_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6675+STABILITY: SURFACE MOTION
 JV6675_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6675+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6675
 JV6675  HISTORY     - Date     Condition        Report By
 JV6675  HISTORY     - 1989     MONUMENTED       WSSC
 JV6675  HISTORY     - 20030609 MARK NOT FOUND   POWELL
 JV6675
 JV6675                          STATION DESCRIPTION
 JV6675
 JV6675'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6675'THE STATION IS LOCATED ABOUT 3.5 KM (2.2 MI) SW OF GAITHERSBURG, 2.1
 JV6675'KM (1.3 MI) NE OF QUINCE ORCHARD RD, AND 6.4 KM (4.0 MI) NW OF
 JV6675'ROCKVILLE. TO REACH THE STATION FROM THE INTERSECTION OF STATE HWYS
 JV6675'RTE 124 (QUINCE ORCHARD RD) AND RTE 117 (CLOPPER RD) IN GAITHERSBURG
 JV6675'GO WEST ON RTE 124 2.61 KM (1.62 MI) , TURN LEFT AND GO SOUTH ON
 JV6675'GREAT SENECA HWY 0.4 KM (0.2 MI) TO THE STATION ON THE RIGHT. THE
 JV6675'STATION IS 80 M (262.5 FT) SW OF THE CENTERLINE OF THE SOUTH BOUND
 JV6675'LANE. OWNERSHIP-COUNTY ROAD RIGHT-OF-WAY. THE STATION MARK IS A
 JV6675'STANDARD WSSC BRASS DISK STAMPED 19777 SET IN THE TOP OF A ROUND
 JV6675'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER RECESSED 0.06 M
 JV6675'(0.20 FT) IN THE GRASS. IT IS 10.37 M (34.02 FT) SW OF THE NORTH EDGE
 JV6675'OF A METAL BAND OF A CONCRETE CATCH BASIN, 5.36 M (17.59 FT) SW OF
 JV6675'THE SOUTH EDGE OF A METAL BAND OF A CONCRETE CATCH BASIN, AND 32.6 M
 JV6675'(107.0 FT) WEST OF THE SOUTH EDGE OF A METAL EDGE OF A CONCRETE CATCH
 JV6675'BASIN. NO REFERENCES WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE
 JV6675'AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 JV6675
 JV6675                          STATION RECOVERY (2003)
 JV6675
 JV6675'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2003 (BAP)
 JV6675'SEARCHED FOR 1.5 HOURS. MONUMENT NOT FOUND
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6676 ***********************************************************************
 JV6676  DESIGNATION -  19778
 JV6676  PID         -  JV6676
 JV6676  STATE/COUNTY-  MD/MONTGOMERY
 JV6676  COUNTRY     -  US
 JV6676  USGS QUAD   -  ROCKVILLE (2016)
 JV6676
 JV6676                         *CURRENT SURVEY CONTROL
 JV6676  ______________________________________________________________________
 JV6676* NAD 83(2011) POSITION- 39 06 48.22030(N) 077 13 21.89296(W)   ADJUSTED
 JV6676* NAD 83(2011) ELLIP HT-    85.018 (meters)        (06/27/12)   ADJUSTED
 JV6676* NAD 83(2011) EPOCH   -  2010.00
 JV6676* NAVD 88 ORTHO HEIGHT -   116.7   (meters)      383.    (feet) VERTCON3
 JV6676  ______________________________________________________________________
 JV6676  GEOID HEIGHT    -        -31.731 (meters)                     GEOID18
 JV6676  NAD 83(2011) X  -  1,095,956.359 (meters)                     COMP
 JV6676  NAD 83(2011) Y  - -4,832,750.414 (meters)                     COMP
 JV6676  NAD 83(2011) Z  -  4,002,146.046 (meters)                     COMP
 JV6676  LAPLACE CORR    -          1.38  (seconds)                    DEFLEC18
 JV6676
 JV6676  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6676  Standards:
 JV6676         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6676            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6676  -------------------------------------------------------------------
 JV6676  NETWORK    1.50   3.55           0.58   0.63   1.81      0.32139193
 JV6676  -------------------------------------------------------------------
 JV6676  Click here for local accuracies and other accuracy information.
 JV6676
 JV6676.The horizontal coordinates were established by GPS observations
 JV6676.and adjusted by the National Geodetic Survey in June 2012.
 JV6676
 JV6676.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6676.been affixed to the stable North American tectonic plate. See 
 JV6676.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6676
 JV6676.The horizontal coordinates are valid at the epoch date displayed above
 JV6676.which is a decimal equivalence of Year/Month/Day.
 JV6676
 JV6676.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6676.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6676
 JV6676.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6676.GEOID18 height accuracy estimate available here.
 JV6676
 JV6676.Click photographs - Photos may exist for this station.
 JV6676
 JV6676.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6676
 JV6676.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6676
 JV6676.The ellipsoidal height was determined by GPS observations
 JV6676.and is referenced to NAD 83.
 JV6676
 JV6676. The following values were computed from the NAD 83(2011) position.
 JV6676
 JV6676;                    North         East     Units Scale Factor Converg.
 JV6676;SPC MD       -   160,617.815   380,735.795   MT  0.99995842   -0 08 23.3
 JV6676;SPC MD       -   526,960.28  1,249,130.69   sFT  0.99995842   -0 08 23.3
 JV6676;UTM  18      - 4,331,712.473   307,825.998   MT  1.00005475   -1 24 09.6
 JV6676
 JV6676!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6676!SPC MD       -   0.99998666  x   0.99995842  =   0.99994508
 JV6676!UTM  18      -   0.99998666  x   1.00005475  =   1.00004141
 JV6676
 JV6676_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0782531712(NAD 83)
 JV6676
 JV6676                          SUPERSEDED SURVEY CONTROL
 JV6676
 JV6676  NAD 83(2007)-  39 06 48.22058(N)    077 13 21.89371(W) AD(2002.00) 0
 JV6676  ELLIP H (02/10/07)   85.050  (m)                       GP(2002.00)    
 JV6676  ELLIP H (08/30/02)   85.040  (m)                       GP(       ) 4 2
 JV6676  ELLIP H (04/01/98)   84.990  (m)                       GP(       ) 4 1
 JV6676  NAD 83(1993)-  39 06 48.22074(N)    077 13 21.89470(W) AD(       ) 1
 JV6676  ELLIP H (11/14/94)   84.960  (m)                       GP(       ) 4 2
 JV6676  NAD 83(1991)-  39 06 48.22041(N)    077 13 21.89487(W) AD(       ) 1
 JV6676  ELLIP H (01/27/92)   84.970  (m)                       GP(       ) 4 1
 JV6676  NAD 83(1986)-  39 06 48.22014(N)    077 13 21.90503(W) AD(       ) 1
 JV6676  NGVD 29 (03/05/91)  116.9    (m)  OSU 89B  model used  GPS OBS        
 JV6676
 JV6676.Superseded values are not recommended for survey control.
 JV6676
 JV6676.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6676.See file dsdata.pdf to determine how the superseded data were derived.
 JV6676
 JV6676_MARKER: DD = SURVEY DISK
 JV6676_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6676_STAMPING: 19778
 JV6676_MARK LOGO: WSSC
 JV6676_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6676_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6676+STABILITY: SURFACE MOTION
 JV6676_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6676+SATELLITE: SATELLITE OBSERVATIONS - June 10, 2014
 JV6676
 JV6676  HISTORY     - Date     Condition        Report By
 JV6676  HISTORY     - 1989     MONUMENTED       WSSC
 JV6676  HISTORY     - 20030609 GOOD             POWELL
 JV6676  HISTORY     - 20100827 GOOD             NGS
 JV6676  HISTORY     - 20140610 GOOD             RKK
 JV6676
 JV6676                          STATION DESCRIPTION
 JV6676
 JV6676'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6676'THE STATION IS LOCATED ABOUT 3.5 KM (2.2 MI) SW OF GAITHERSBURG, 5.3
 JV6676'KM (3.3 MI) NW OF ROCKVILLE, AND 3.3 KM (2.1 MI) ENE OF QUINCE
 JV6676'ORCHARD RD. TO REACH THE STATION FROM THE INTERSECTION OF STATE HWYS
 JV6676'RTE 124 (QUINCE ORCHARD RD) AND RTE 117 (CLOPPER RD) IN GAITHERSBURG
 JV6676'GO WEST ON RTE 124, 2.6 KM (1.6 MI) TURN LEFT AND GO SOUTH ON GREAT
 JV6676'SENECA HWY 2.3 KM (1.4 MI) TO THE STATION ON THE RIGHT. THE STATION
 JV6676'IS 11.6 M (38.1 FT) SW OF THE CENTERLINE OF THE SOUTH BOUND LANE AND
 JV6676'1.6 M (5.2 FT) NE OF THE TOP OF THE BANK. OWNERSHIP-COUNTY ROAD
 JV6676'RIGHT-OF-WAY. THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 JV6676'19778 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 JV6676'DIAMETER RECESSED 0.06 M (0.20 FT) IN THE GRASS. IT IS 67.8 M
 JV6676'(222.4 FT) SW OF THE SW CORNER OF A CONCRETE CATCH BASIN, 48.8 M
 JV6676'(160.1 FT) WEST OF THE NORTH END OF A WOOD PRIVACY FENCE, AND 59.3 M
 JV6676'(194.6 FT) NW OF THE SOUTH END OF A WOOD PRIVACY FENCE. NO REFERENCES
 JV6676'WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR
 JV6676'THIS STATION AT THIS TIME.
 JV6676
 JV6676                          STATION RECOVERY (2003)
 JV6676
 JV6676'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2003 (BAP)
 JV6676'PLANNING REQUIRED FOR GPS OBSERVATIONS
 JV6676
 JV6676                          STATION RECOVERY (2010)
 JV6676
 JV6676'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV6676'TREES TO THE WEST COULD MAKE GPS OBSERVATIONS PROBLEMATIC.
 JV6676
 JV6676                          STATION RECOVERY (2014)
 JV6676
 JV6676'RECOVERY NOTE BY RK&K 2014 (MC)
 JV6676'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1360 ***********************************************************************
 HV1360  DESIGNATION -  1978 WSSC
 HV1360  PID         -  HV1360
 HV1360  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1360  COUNTRY     -  US
 HV1360  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1360
 HV1360                         *CURRENT SURVEY CONTROL
 HV1360  ______________________________________________________________________
 HV1360* NAD 83(1986) POSITION- 38 56 17.     (N) 076 57 59.     (W)   SCALED
 HV1360* NAVD 88 ORTHO HEIGHT -    30.04  (+/-2cm)       98.6   (feet) VERTCON3
 HV1360  ______________________________________________________________________
 HV1360  GEOID HEIGHT    -        -32.121 (meters)                     GEOID18
 HV1360  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1360
 HV1360.The horizontal coordinates were scaled from a map and have
 HV1360.an estimated accuracy of +/- 6 seconds.
 HV1360
 HV1360.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1360.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1360
 HV1360.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1360.GEOID18 height accuracy estimate available here.
 HV1360
 HV1360.The vertical order pertains to the NGVD 29 superseded value.
 HV1360
 HV1360.Click photographs - Photos may exist for this station.
 HV1360
 HV1360;                    North         East    Units  Estimated Accuracy
 HV1360;SPC MD       -   141,130.      402,910.      MT  (+/- 180 meters Scaled)
 HV1360
 HV1360_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ295117(NAD 83)
 HV1360
 HV1360                          SUPERSEDED SURVEY CONTROL
 HV1360
 HV1360  NGVD 29 (11/26/84)   30.265  (m)           99.29   (f) ADJUSTED    2 0
 HV1360
 HV1360.Superseded values are not recommended for survey control.
 HV1360
 HV1360.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1360.See file dsdata.pdf to determine how the superseded data were derived.
 HV1360
 HV1360_MARKER: B = BOLT
 HV1360_SETTING: 0 = UNSPECIFIED SETTING
 HV1360_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1360
 HV1360  HISTORY     - Date     Condition        Report By
 HV1360  HISTORY     - UNK      MONUMENTED       WSSC
 HV1360  HISTORY     - 1944     GOOD             WSSC
 HV1360
 HV1360                          STATION DESCRIPTION
 HV1360
 HV1360'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1360'AT MT RAINIER.
 HV1360'AT THE NORTHEAST CORNER OF THE INTERSECTION OF BUNKER HILL ROAD
 HV1360'AND TWENTY-NINTH STREET, 0.3 MILE WEST OF RHODE ISLAND AVENUE,
 HV1360'AT THE BOTTOM OF EASTERN AVENUE HILL, 29.8 FEET EAST OF THE
 HV1360'CENTERLINE OF TWENTY-NINTH STREET, AND 23.2 FEET NORTH OF THE
 HV1360'CENTERLINE OF BUNKER HILL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8949 ***********************************************************************
 HV8949  DESIGNATION -  19781
 HV8949  PID         -  HV8949
 HV8949  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8949  COUNTRY     -  US
 HV8949  USGS QUAD   -  UPPER MARLBORO (2016)
 HV8949
 HV8949                         *CURRENT SURVEY CONTROL
 HV8949  ______________________________________________________________________
 HV8949* NAD 83(2011) POSITION- 38 52 09.98099(N) 076 50 39.21170(W)   ADJUSTED
 HV8949* NAD 83(2011) ELLIP HT-    14.792 (meters)        (06/27/12)   ADJUSTED
 HV8949* NAD 83(2011) EPOCH   -  2010.00
 HV8949* NAVD 88 ORTHO HEIGHT -    47.3   (meters)      155.    (feet) VERTCON3
 HV8949  ______________________________________________________________________
 HV8949  GEOID HEIGHT    -        -32.532 (meters)                     GEOID18
 HV8949  NAD 83(2011) X  -  1,131,725.639 (meters)                     COMP
 HV8949  NAD 83(2011) Y  - -4,841,944.935 (meters)                     COMP
 HV8949  NAD 83(2011) Z  -  3,981,051.882 (meters)                     COMP
 HV8949  LAPLACE CORR    -         -5.53  (seconds)                    DEFLEC18
 HV8949
 HV8949  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8949  Standards:
 HV8949         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8949            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8949  -------------------------------------------------------------------
 HV8949  NETWORK    1.56   2.84           0.47   0.74   1.45      0.18776240
 HV8949  -------------------------------------------------------------------
 HV8949  Click here for local accuracies and other accuracy information.
 HV8949
 HV8949.The horizontal coordinates were established by GPS observations
 HV8949.and adjusted by the National Geodetic Survey in June 2012.
 HV8949
 HV8949.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8949.been affixed to the stable North American tectonic plate. See 
 HV8949.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8949
 HV8949.The horizontal coordinates are valid at the epoch date displayed above
 HV8949.which is a decimal equivalence of Year/Month/Day.
 HV8949
 HV8949.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8949.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8949
 HV8949.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8949.GEOID18 height accuracy estimate available here.
 HV8949
 HV8949.Click photographs - Photos may exist for this station.
 HV8949
 HV8949.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8949
 HV8949.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8949
 HV8949.The ellipsoidal height was determined by GPS observations
 HV8949.and is referenced to NAD 83.
 HV8949
 HV8949. The following values were computed from the NAD 83(2011) position.
 HV8949
 HV8949;                    North         East     Units Scale Factor Converg.
 HV8949;SPC MD       -   133,524.347   413,518.267   MT  0.99994985   +0 05 52.0
 HV8949;SPC MD       -   438,071.13  1,356,684.51   sFT  0.99994985   +0 05 52.0
 HV8949;UTM  18      - 4,303,904.468   340,006.282   MT  0.99991522   -1 09 27.3
 HV8949
 HV8949!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8949!SPC MD       -   0.99999768  x   0.99994985  =   0.99994753
 HV8949!UTM  18      -   0.99999768  x   0.99991522  =   0.99991290
 HV8949
 HV8949_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4000603904(NAD 83)
 HV8949
 HV8949                          SUPERSEDED SURVEY CONTROL
 HV8949
 HV8949  NAD 83(2007)-  38 52 09.98139(N)    076 50 39.21248(W) AD(2002.00) 0
 HV8949  ELLIP H (02/10/07)   14.806  (m)                       GP(2002.00)    
 HV8949  ELLIP H (08/30/02)   14.810  (m)                       GP(       ) 4 2
 HV8949  NAD 83(1991)-  38 52 09.98171(N)    076 50 39.21311(W) AD(       ) 1
 HV8949  ELLIP H (01/27/92)   14.770  (m)                       GP(       ) 4 1
 HV8949  NAD 83(1986)-  38 52 09.98020(N)    076 50 39.22382(W) AD(       ) 1
 HV8949  NGVD 29 (03/05/91)   47.5    (m)  OSU 89B  model used  GPS OBS        
 HV8949
 HV8949.Superseded values are not recommended for survey control.
 HV8949
 HV8949.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8949.See file dsdata.pdf to determine how the superseded data were derived.
 HV8949
 HV8949_MARKER: DD = SURVEY DISK
 HV8949_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8949_STAMPING: 19781
 HV8949_MARK LOGO: WSSC
 HV8949_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8949_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8949+STABILITY: SURFACE MOTION
 HV8949_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8949+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HV8949
 HV8949  HISTORY     - Date     Condition        Report By
 HV8949  HISTORY     - 1989     MONUMENTED       WSSC
 HV8949
 HV8949                          STATION DESCRIPTION
 HV8949
 HV8949'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8949'THE STATION IS LOCATED ABOUT 3.0 KM (1.9 MI) SW OF LARGO, 3.0 KM
 HV8949'(1.9 MI) NE OF FORESTVILLE, AND 4.3 KM (2.7 MI) ENE OF DISTRICT
 HV8949'HEIGHTS. TO REACH THE STATION FROM THE BRIDGE ON INTERSTATE 95
 HV8949'(CAPITOL BELTWAY) WHERE IT GOES OVER STATE RTE 214 (CENTRAL AVE) IN
 HV8949'HAMPTON GO SOUTH ON I-95 2.6 KM (1.6 MI) TO STATION ON LEFT IN THE
 HV8949'GRASS MEDIAN.  THE STATION IS 61 M (200.1 FT) NW OF THE BRIDGE OVER
 HV8949'RITCHIE-MARLBORO RD. OWNERSHIP--FEDERAL ROAD RIGHT-OF-WAY THE STATION
 HV8949'MARK IS A STANDARD WSSC BRASS DISK STAMPED 19781 SET IN THE TOP OF A
 HV8949'ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER, RECESSED 0.06 M
 HV8949'(0.20 FT) IN THE GRASS. IT IS 39.95 M (131.07 FT) NW OF THE NORTH
 HV8949'CORNER OF A BRIDGE FOR THE NORTH BOUND LANE OF I-95 WHERE IT CROSSES
 HV8949'OVER RITCHIE-MARLBORO RD, 40.64 M (133.33 FT) NE OF THE EAST CORNER
 HV8949'OF A BRIDGE FOR THE SOUTH BOUND LANE OF I-95 WHERE IT CROSSES OVER
 HV8949'RITCHIE-MARLBORO RD, AND 1.27 M (4.17 FT) NE OF A CROSS CUT IN THE
 HV8949'TOP OF A GUARD RAIL. NO REFERENCES WERE ESTABLISHED AT THIS TIME. NO
 HV8949'STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8950 ***********************************************************************
 HV8950  DESIGNATION -  19783
 HV8950  PID         -  HV8950
 HV8950  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8950  COUNTRY     -  US
 HV8950  USGS QUAD   -  LANHAM (2016)
 HV8950
 HV8950                         *CURRENT SURVEY CONTROL
 HV8950  ______________________________________________________________________
 HV8950* NAD 83(2011) POSITION- 38 54 45.36356(N) 076 52 22.32910(W)   ADJUSTED
 HV8950* NAD 83(2011) ELLIP HT-    10.373 (meters)        (06/27/12)   ADJUSTED
 HV8950* NAD 83(2011) EPOCH   -  2010.00
 HV8950* NAVD 88 ORTHO HEIGHT -    42.8   (meters)      140.    (feet) VERTCON3
 HV8950  ______________________________________________________________________
 HV8950  GEOID HEIGHT    -        -32.395 (meters)                     GEOID18
 HV8950  NAD 83(2011) X  -  1,128,620.867 (meters)                     COMP
 HV8950  NAD 83(2011) Y  - -4,839,577.041 (meters)                     COMP
 HV8950  NAD 83(2011) Z  -  3,984,778.571 (meters)                     COMP
 HV8950  LAPLACE CORR    -         -4.85  (seconds)                    DEFLEC18
 HV8950
 HV8950  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8950  Standards:
 HV8950         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8950            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8950  -------------------------------------------------------------------
 HV8950  NETWORK    0.98   1.92           0.40   0.40   0.98      0.20556791
 HV8950  -------------------------------------------------------------------
 HV8950  Click here for local accuracies and other accuracy information.
 HV8950
 HV8950.The horizontal coordinates were established by GPS observations
 HV8950.and adjusted by the National Geodetic Survey in June 2012.
 HV8950
 HV8950.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8950.been affixed to the stable North American tectonic plate. See 
 HV8950.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8950
 HV8950.The horizontal coordinates are valid at the epoch date displayed above
 HV8950.which is a decimal equivalence of Year/Month/Day.
 HV8950
 HV8950.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8950.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8950
 HV8950.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8950.GEOID18 height accuracy estimate available here.
 HV8950
 HV8950.Click photographs - Photos may exist for this station.
 HV8950
 HV8950.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8950
 HV8950.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8950
 HV8950.The ellipsoidal height was determined by GPS observations
 HV8950.and is referenced to NAD 83.
 HV8950
 HV8950. The following values were computed from the NAD 83(2011) position.
 HV8950
 HV8950;                    North         East     Units Scale Factor Converg.
 HV8950;SPC MD       -   138,311.791   411,025.866   MT  0.99995005   +0 04 47.2
 HV8950;SPC MD       -   453,777.93  1,348,507.36   sFT  0.99995005   +0 04 47.2
 HV8950;UTM  18      - 4,308,745.246   337,619.482   MT  0.99992469   -1 10 36.0
 HV8950
 HV8950!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8950!SPC MD       -   0.99999837  x   0.99995005  =   0.99994842
 HV8950!UTM  18      -   0.99999837  x   0.99992469  =   0.99992306
 HV8950
 HV8950_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3761908745(NAD 83)
 HV8950
 HV8950                          SUPERSEDED SURVEY CONTROL
 HV8950
 HV8950  NAD 83(2007)-  38 54 45.36389(N)    076 52 22.32985(W) AD(2002.00) 0
 HV8950  ELLIP H (02/10/07)   10.399  (m)                       GP(2002.00)    
 HV8950  ELLIP H (08/30/02)   10.403  (m)                       GP(       ) 4 2
 HV8950  NAD 83(1991)-  38 54 45.36380(N)    076 52 22.32991(W) AD(       ) 1
 HV8950  ELLIP H (01/27/92)   10.348  (m)                       GP(       ) 4 1
 HV8950  NAD 83(1986)-  38 54 45.36219(N)    076 52 22.34060(W) AD(       ) 1
 HV8950  NGVD 29 (03/05/91)   43.0    (m)  OSU 89B  model used  GPS OBS        
 HV8950
 HV8950.Superseded values are not recommended for survey control.
 HV8950
 HV8950.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8950.See file dsdata.pdf to determine how the superseded data were derived.
 HV8950
 HV8950_MARKER: DD = SURVEY DISK
 HV8950_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8950_STAMPING: 19783
 HV8950_MARK LOGO: WSSC
 HV8950_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8950_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8950+STABILITY: SURFACE MOTION
 HV8950_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8950+SATELLITE: SATELLITE OBSERVATIONS - December 21, 2011
 HV8950
 HV8950  HISTORY     - Date     Condition        Report By
 HV8950  HISTORY     - 1989     MONUMENTED       WSSC
 HV8950  HISTORY     - 20111221 GOOD             GPSSS
 HV8950
 HV8950                          STATION DESCRIPTION
 HV8950
 HV8950'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8950'THE STATION IS LOCATED ABOUT 3.9 KM (2.4 MI) NW OF LARGO, 3.3 KM
 HV8950'(2.1 MI) EAST OF CHEVERLY, AND 3.3 KM (2.1 MI) NE OF SEAT
 HV8950'PLEASANT. TO REACH THE STATION FROM THE BRIDGE ON RTE 202 WHERE IT
 HV8950'PASSES OVER INTERSTATE HWY I-95 IN LANDOVER, GO WEST ON RTE 202 0.7
 HV8950'KM (0.4 MI) TO SHERIFF ROAD, TURN LEFT AND GO SOUTH 1.4 KM (0.9 MI)
 HV8950'TO THE STATION ON THE LEFT IN FRONT OF PACA INSTRUCTIONAL SERVICES
 HV8950'CENTER. OWNERSHIP-PRINCE GEORGES COUNTY BOARD OF EDUCATION. THE
 HV8950'STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED 19783 SET IN THE
 HV8950'TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER RECESSED
 HV8950'0.15 M (0.49 FT) IN GRASS. IT IS 31.91 M (104.69 FT) NE OF THE NORTH
 HV8950'END OF A BRICK BUILDING, 40.28 M (132.15 FT) NE OF THE EAST END OF A
 HV8950'BRICK BUILDING, 19.79 M (64.93 FT) OF THE TOP AND CENTERLINE OF A
 HV8950'FIRE HYDRANT, AND 26.80 M (87.93 FT) SE OF A REF NAIL IN THE EAST
 HV8950'SIDE OF A PEPCO POLE NUMBER 836393-0908.NO REFERENCES WERE
 HV8950'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 HV8950'STATION AT THIS TIME.
 HV8950
 HV8950                          STATION RECOVERY (2011)
 HV8950
 HV8950'RECOVERY NOTE BY GPS SALES AND SERVICES 2011 (TED)
 HV8950'RECOVERED BY TED AND TOM OF SURVEY SERVICES OF MD, LLC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6677 ***********************************************************************
 JV6677  DESIGNATION -  19785
 JV6677  PID         -  JV6677
 JV6677  STATE/COUNTY-  MD/MONTGOMERY
 JV6677  COUNTRY     -  US
 JV6677  USGS QUAD   -  BELTSVILLE (2016)
 JV6677
 JV6677                         *CURRENT SURVEY CONTROL
 JV6677  ______________________________________________________________________
 JV6677* NAD 83(2011) POSITION- 39 01 41.84696(N) 076 58 51.09975(W)   ADJUSTED
 JV6677* NAD 83(2011) ELLIP HT-    74.663 (meters)        (06/27/12)   ADJUSTED
 JV6677* NAD 83(2011) EPOCH   -  2010.00
 JV6677* NAVD 88 ORTHO HEIGHT -   106.8   (meters)      350.    (feet) VERTCON3
 JV6677  ______________________________________________________________________
 JV6677  GEOID HEIGHT    -        -32.023 (meters)                     GEOID18
 JV6677  NAD 83(2011) X  -  1,117,688.768 (meters)                     COMP
 JV6677  NAD 83(2011) Y  - -4,833,874.562 (meters)                     COMP
 JV6677  NAD 83(2011) Z  -  3,994,804.353 (meters)                     COMP
 JV6677  LAPLACE CORR    -         -3.21  (seconds)                    DEFLEC18
 JV6677
 JV6677  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6677  Standards:
 JV6677         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6677            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6677  -------------------------------------------------------------------
 JV6677  NETWORK    1.14   2.25           0.38   0.52   1.15      0.26623552
 JV6677  -------------------------------------------------------------------
 JV6677  Click here for local accuracies and other accuracy information.
 JV6677
 JV6677.The horizontal coordinates were established by GPS observations
 JV6677.and adjusted by the National Geodetic Survey in June 2012.
 JV6677
 JV6677.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6677.been affixed to the stable North American tectonic plate. See 
 JV6677.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6677
 JV6677.The horizontal coordinates are valid at the epoch date displayed above
 JV6677.which is a decimal equivalence of Year/Month/Day.
 JV6677
 JV6677.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6677.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6677
 JV6677.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6677.GEOID18 height accuracy estimate available here.
 JV6677
 JV6677.Click photographs - Photos may exist for this station.
 JV6677
 JV6677.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6677
 JV6677.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6677
 JV6677.The ellipsoidal height was determined by GPS observations
 JV6677.and is referenced to NAD 83.
 JV6677
 JV6677. The following values were computed from the NAD 83(2011) position.
 JV6677
 JV6677;                    North         East     Units Scale Factor Converg.
 JV6677;SPC MD       -   151,146.960   401,657.201   MT  0.99995338   +0 00 43.2
 JV6677;SPC MD       -   495,887.98  1,317,770.33   sFT  0.99995338   +0 00 43.2
 JV6677;UTM  18      - 4,321,782.905   328,534.949   MT  0.99996203   -1 14 51.6
 JV6677
 JV6677!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6677!SPC MD       -   0.99998829  x   0.99995338  =   0.99994167
 JV6677!UTM  18      -   0.99998829  x   0.99996203  =   0.99995032
 JV6677
 JV6677_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2853421782(NAD 83)
 JV6677
 JV6677                          SUPERSEDED SURVEY CONTROL
 JV6677
 JV6677  NAD 83(2007)-  39 01 41.84718(N)    076 58 51.10060(W) AD(2002.00) 0
 JV6677  ELLIP H (02/10/07)   74.692  (m)                       GP(2002.00)    
 JV6677  ELLIP H (08/30/02)   74.700  (m)                       GP(       ) 4 2
 JV6677  NAD 83(1991)-  39 01 41.84679(N)    076 58 51.10063(W) AD(       ) 1
 JV6677  ELLIP H (01/27/92)   74.622  (m)                       GP(       ) 4 1
 JV6677  NAD 83(1986)-  39 01 41.84556(N)    076 58 51.11112(W) AD(       ) 1
 JV6677  NGVD 29 (03/05/91)  107.0    (m)  OSU 89B  model used  GPS OBS        
 JV6677
 JV6677.Superseded values are not recommended for survey control.
 JV6677
 JV6677.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6677.See file dsdata.pdf to determine how the superseded data were derived.
 JV6677
 JV6677_MARKER: DD = SURVEY DISK
 JV6677_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6677_STAMPING: 19785
 JV6677_MARK LOGO: WSSC
 JV6677_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6677_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6677+STABILITY: SURFACE MOTION
 JV6677_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6677+SATELLITE: SATELLITE OBSERVATIONS - June 18, 2006
 JV6677
 JV6677  HISTORY     - Date     Condition        Report By
 JV6677  HISTORY     - 1989     MONUMENTED       WSSC
 JV6677  HISTORY     - 20021203 MARK NOT FOUND   POWELL
 JV6677  HISTORY     - 20030331 GOOD             INDIV
 JV6677  HISTORY     - 20060618 GOOD             NGS
 JV6677  HISTORY     - 20090512 GOOD             JMTMD
 JV6677
 JV6677                          STATION DESCRIPTION
 JV6677
 JV6677'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6677'THE STATION IS LOCATED ABOUT 11.3 KM (7.0 MI) SW OF BURTONSVILLE, 7.2
 JV6677'KM (4.5 MI) SE OF WHEATON, AND 9.7 KM (6.0 MI) NW OF HYATTSVILLE TO
 JV6677'REACH THE STATION FROM THE UNDERPASS OF MD RTE 650 (NEW HAMPSHIRE
 JV6677'AVE) AND MD RTE 29 (COLESVILLE RD) IN WHITE OAK GO SSE ON RTE 650 1.9
 JV6677'KM (1.2 MI) TO ENTRANCE TO HILLANDALE RECREATION CENTER, TURN LEFT
 JV6677'AND GO SE ACROSS FROM THE BALLFIELDS AND 0.1 KM (0.1 MI) TO THE SE
 JV6677'CORNER OF THE PARK. OWNERSHIP-MARYLAND NATIONAL CAPITOL PARK AND
 JV6677'PLANNING COMMISSION. THE STATION MARK IS A STANDARD WSSC BRASS DISK
 JV6677'STAMPED 19785 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M
 JV6677'(0.7 FT) IN DIAMATER RECESSED 0.06 M (0.20 FT) IN THE GRASS. IT IS
 JV6677'10.47 M (34.35 FT) NE OF THE SE END OF A CHAIN LINK BACK STOP FENCE,
 JV6677'15.11 M (49.57 FT) SOUTH OF THE NE END OF A CHAIN LINK BACK STOP
 JV6677'FENCE, 5.88 M (19.29 FT) NW OF A CROSS CUT IN THE NW CORNER OF A
 JV6677'CONCRETE CATCH BASIN, AND 10.57 M (34.68 FT) NE OF A REF NAIL IN THE
 JV6677'NORTH SIDE OF A .1 M (0.3 FT) CHERRY TREE. NO REFERENCES WERE
 JV6677'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 JV6677'STATION AT THIS TIME.
 JV6677
 JV6677                          STATION RECOVERY (2002)
 JV6677
 JV6677'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV6677'SEARCHED FOR ONE HOUR, MARK NOT FOUND
 JV6677
 JV6677                          STATION RECOVERY (2003)
 JV6677
 JV6677'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (JPG)
 JV6677'RECOVERED AT SE CORNER OF BALL FIELD, BACKSTOP HAS BEEN MOVED
 JV6677
 JV6677                          STATION RECOVERY (2006)
 JV6677
 JV6677'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV6677'CROSS CUT IN CATCH BASIN AND NAIL IN CHEERY TREE MENTIONED IN 1989
 JV6677'DECRIPTION WERE ALSO RECOVERED.
 JV6677
 JV6677                          STATION RECOVERY (2009)
 JV6677
 JV6677'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 JV6677'POOR SITE FOR GPS - CORNER OF WOODS
 JV6677'(X,Y,Z, NOT CHECKED)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8951 ***********************************************************************
 HV8951  DESIGNATION -  19786
 HV8951  PID         -  HV8951
 HV8951  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8951  COUNTRY     -  US
 HV8951  USGS QUAD   -  LANHAM (2016)
 HV8951
 HV8951                         *CURRENT SURVEY CONTROL
 HV8951  ______________________________________________________________________
 HV8951* NAD 83(2011) POSITION- 38 59 39.30375(N) 076 52 25.75986(W)   ADJUSTED
 HV8951* NAD 83(2011) ELLIP HT-    13.096 (meters)        (06/27/12)   ADJUSTED
 HV8951* NAD 83(2011) EPOCH   -  2010.00
 HV8951* NAVD 88 ORTHO HEIGHT -    45.4   (meters)      149.    (feet) VERTCON3
 HV8951  ______________________________________________________________________
 HV8951  GEOID HEIGHT    -        -32.281 (meters)                     GEOID18
 HV8951  NAD 83(2011) X  -  1,127,246.707 (meters)                     COMP
 HV8951  NAD 83(2011) Y  - -4,834,048.107 (meters)                     COMP
 HV8951  NAD 83(2011) Z  -  3,991,829.251 (meters)                     COMP
 HV8951  LAPLACE CORR    -         -5.02  (seconds)                    DEFLEC18
 HV8951
 HV8951  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8951  Standards:
 HV8951         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8951            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8951  -------------------------------------------------------------------
 HV8951  NETWORK    0.87   1.67           0.31   0.39   0.85      0.08496059
 HV8951  -------------------------------------------------------------------
 HV8951  Click here for local accuracies and other accuracy information.
 HV8951
 HV8951.The horizontal coordinates were established by GPS observations
 HV8951.and adjusted by the National Geodetic Survey in June 2012.
 HV8951
 HV8951.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8951.been affixed to the stable North American tectonic plate. See 
 HV8951.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8951
 HV8951.The horizontal coordinates are valid at the epoch date displayed above
 HV8951.which is a decimal equivalence of Year/Month/Day.
 HV8951
 HV8951.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8951.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8951
 HV8951.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8951.GEOID18 height accuracy estimate available here.
 HV8951
 HV8951.Click photographs - Photos may exist for this station.
 HV8951
 HV8951.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8951
 HV8951.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8951
 HV8951.The ellipsoidal height was determined by GPS observations
 HV8951.and is referenced to NAD 83.
 HV8951
 HV8951. The following values were computed from the NAD 83(2011) position.
 HV8951
 HV8951;                    North         East     Units Scale Factor Converg.
 HV8951;SPC MD       -   147,375.570   410,930.687   MT  0.99995198   +0 04 45.1
 HV8951;SPC MD       -   483,514.68  1,348,195.10   sFT  0.99995198   +0 04 45.1
 HV8951;UTM  18      - 4,317,808.691   337,723.235   MT  0.99992427   -1 10 45.6
 HV8951
 HV8951!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8951!SPC MD       -   0.99999795  x   0.99995198  =   0.99994993
 HV8951!UTM  18      -   0.99999795  x   0.99992427  =   0.99992222
 HV8951
 HV8951_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3772317808(NAD 83)
 HV8951
 HV8951                          SUPERSEDED SURVEY CONTROL
 HV8951
 HV8951  NAD 83(2007)-  38 59 39.30399(N)    076 52 25.76063(W) AD(2002.00) 0
 HV8951  ELLIP H (02/10/07)   13.124  (m)                       GP(2002.00)    
 HV8951  ELLIP H (08/30/02)   13.131  (m)                       GP(       ) 4 2
 HV8951  NAD 83(1991)-  38 59 39.30363(N)    076 52 25.76072(W) AD(       ) 1
 HV8951  ELLIP H (01/27/92)   13.068  (m)                       GP(       ) 4 1
 HV8951  NAD 83(1986)-  38 59 39.30219(N)    076 52 25.77133(W) AD(       ) 1
 HV8951  NGVD 29 (03/05/91)   45.6    (m)  OSU 89B  model used  GPS OBS        
 HV8951
 HV8951.Superseded values are not recommended for survey control.
 HV8951
 HV8951.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8951.See file dsdata.pdf to determine how the superseded data were derived.
 HV8951
 HV8951_MARKER: DD = SURVEY DISK
 HV8951_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8951_STAMPING: 19786
 HV8951_MARK LOGO: WSSC
 HV8951_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8951_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8951+STABILITY: SURFACE MOTION
 HV8951_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8951+SATELLITE: SATELLITE OBSERVATIONS - September 16, 2019
 HV8951
 HV8951  HISTORY     - Date     Condition        Report By
 HV8951  HISTORY     - 1989     MONUMENTED       WSSC
 HV8951  HISTORY     - 20070624 GOOD             GEOCAC
 HV8951  HISTORY     - 20190916 GOOD             MDSHA
 HV8951
 HV8951                          STATION DESCRIPTION
 HV8951
 HV8951'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8951'THE STATION IS LOCATED ABOUT 7.2 KM (4.5 MI) SW OF BOWIE, 3.7 KM
 HV8951'(2.3 MI) EAST OF BERWYN HEIGHTS, AND 12.1 KM (7.5 MI) SOUTH OF
 HV8951'LAUREL. TO REACH THE STATION FROM THE BRIDGE ON STATE RTE 193
 HV8951'(GREENBELT RD) WHERE IT GOES OVER GLADYS NOON SPELLMAN PKWY
 HV8951'(BALTIMORE/WASHINGTON PKWY) IN GREENBELT GO EAST ON RTE 193 0.5 KM
 HV8951'(0.3 MI) TO HANOVER PKWY TURN LEFT AND THE STATION IS ON THE EAST
 HV8951'CORNER 30.5 M (100.1 FT) SE OF HANOVER PKWY ON THE KNOLL AT THE SW
 HV8951'CORNER OF ELEANOR ROOSEVELT HIGH SCHOOL PROPERTY. OWNERSHIP-PRINCE
 HV8951'GEORGES COUNTY BOARD OF EDUCATION. IT IS 29.28 M (96.06 FT) SE OF THE
 HV8951'TOP AND CENTERLINE OF A FIRE HYDRANT, 14.78 M (48.49 FT) NE OF A REF
 HV8951'NAIL IN A PEPCO POLE, 5.57 M (18.27 FT) SSW OF THE NW CORNER OF A
 HV8951'BRICK SIGN POST, AND 5.52 M (18.11 FT) WNW OF THE SOUTH CORNER OF A
 HV8951'BRICK SIGN POST. NO REFERENCES WERE ESTABLISHED AT THIS TIME. NO
 HV8951'STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 HV8951
 HV8951                          STATION RECOVERY (2007)
 HV8951
 HV8951'RECOVERY NOTE BY GEOCACHING 2007 (APC)
 HV8951'STATION DISK IS STAMPED 5449 19786.
 HV8951
 HV8951                          STATION RECOVERY (2019)
 HV8951
 HV8951'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 HV8951'REFERENCED FIRE HYDRANT HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6678 ***********************************************************************
 JV6678  DESIGNATION -  19794
 JV6678  PID         -  JV6678
 JV6678  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6678  COUNTRY     -  US
 JV6678  USGS QUAD   -  BELTSVILLE (2016)
 JV6678
 JV6678                         *CURRENT SURVEY CONTROL
 JV6678  ______________________________________________________________________
 JV6678* NAD 83(2011) POSITION- 39 06 58.51462(N) 076 52 36.05677(W)   ADJUSTED
 JV6678* NAD 83(2011) ELLIP HT-    56.961 (meters)        (06/27/12)   ADJUSTED
 JV6678* NAD 83(2011) EPOCH   -  2010.00
 JV6678* NAVD 88 ORTHO HEIGHT -    89.1   (meters)      292.    (feet) VERTCON3
 JV6678  ______________________________________________________________________
 JV6678  GEOID HEIGHT    -        -32.175 (meters)                     GEOID18
 JV6678  NAD 83(2011) X  -  1,125,075.511 (meters)                     COMP
 JV6678  NAD 83(2011) Y  - -4,825,826.493 (meters)                     COMP
 JV6678  NAD 83(2011) Z  -  4,002,374.659 (meters)                     COMP
 JV6678  LAPLACE CORR    -         -4.17  (seconds)                    DEFLEC18
 JV6678
 JV6678  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6678  Standards:
 JV6678         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6678            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6678  -------------------------------------------------------------------
 JV6678  NETWORK    0.83   1.57           0.33   0.34   0.80      0.23776709
 JV6678  -------------------------------------------------------------------
 JV6678  Click here for local accuracies and other accuracy information.
 JV6678
 JV6678.The horizontal coordinates were established by GPS observations
 JV6678.and adjusted by the National Geodetic Survey in June 2012.
 JV6678
 JV6678.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6678.been affixed to the stable North American tectonic plate. See 
 JV6678.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6678
 JV6678.The horizontal coordinates are valid at the epoch date displayed above
 JV6678.which is a decimal equivalence of Year/Month/Day.
 JV6678
 JV6678.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6678.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6678
 JV6678.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6678.GEOID18 height accuracy estimate available here.
 JV6678
 JV6678.Click photographs - Photos may exist for this station.
 JV6678
 JV6678.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6678
 JV6678.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6678
 JV6678.The ellipsoidal height was determined by GPS observations
 JV6678.and is referenced to NAD 83.
 JV6678
 JV6678. The following values were computed from the NAD 83(2011) position.
 JV6678
 JV6678;                    North         East     Units Scale Factor Converg.
 JV6678;SPC MD       -   160,918.961   410,664.610   MT  0.99995863   +0 04 38.6
 JV6678;SPC MD       -   527,948.29  1,347,322.14   sFT  0.99995863   +0 04 38.6
 JV6678;UTM  18      - 4,331,354.242   337,755.054   MT  0.99992413   -1 11 03.3
 JV6678
 JV6678!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6678!SPC MD       -   0.99999106  x   0.99995863  =   0.99994969
 JV6678!UTM  18      -   0.99999106  x   0.99992413  =   0.99991519
 JV6678
 JV6678_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3775531354(NAD 83)
 JV6678
 JV6678                          SUPERSEDED SURVEY CONTROL
 JV6678
 JV6678  NAD 83(2007)-  39 06 58.51475(N)    076 52 36.05763(W) AD(2002.00) 0
 JV6678  ELLIP H (02/10/07)   56.990  (m)                       GP(2002.00)    
 JV6678  ELLIP H (08/30/02)   56.952  (m)                       GP(       ) 4 2
 JV6678  NAD 83(1991)-  39 06 58.51531(N)    076 52 36.05660(W) AD(       ) 1
 JV6678  NAD 83(1991)-  39 06 58.51397(N)    076 52 36.05798(W) AD(       ) 1
 JV6678  ELLIP H (01/27/92)   56.910  (m)                       GP(       ) 4 1
 JV6678  NAD 83(1986)-  39 06 58.51296(N)    076 52 36.06780(W) AD(       ) 1
 JV6678  NGVD 29 (03/05/91)   89.3    (m)  OSU 89B  model used  GPS OBS        
 JV6678
 JV6678.Superseded values are not recommended for survey control.
 JV6678
 JV6678.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6678.See file dsdata.pdf to determine how the superseded data were derived.
 JV6678
 JV6678_MARKER: DD = SURVEY DISK
 JV6678_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6678_STAMPING: 19794
 JV6678_MARK LOGO: WSSC
 JV6678_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6678_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6678+STABILITY: SURFACE MOTION
 JV6678_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6678+SATELLITE: SATELLITE OBSERVATIONS - June 20, 1991
 JV6678
 JV6678  HISTORY     - Date     Condition        Report By
 JV6678  HISTORY     - 1989     MONUMENTED       WSSC
 JV6678  HISTORY     - 19910620 GOOD             MD-027
 JV6678
 JV6678                          STATION DESCRIPTION
 JV6678
 JV6678'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6678'THE STATION IS LOCATED ABOUT 2.6 KM (1.6 MI) NW OF LAUREL, 5.8 KM
 JV6678'(3.6 MI) EAST OF BURTONSVILLE, AND 8.7 KM (5.4 MI) NE OF FAIRLAND. TO
 JV6678'REACH THE STATION FROM THE BRIDGE ON STATE RTE 198 (SANDY SPRING RD)
 JV6678'WHERE IT GOES OVER INTERSTATE HWY I-95 IN LAUREL GO WEST ON RTE 198
 JV6678'1.5 KM (0.9 MI) TO BOND MILL RD, TURN RIGHT AND GO NE 2.4 KM
 JV6678'(1.5 MI) TO BROOKLYN BRIDGE RD, TURN RIGHT AND GO EAST 1.0 KM
 JV6678'(0.6 MI) ON WEST BOND MILL RD, TURN LEFT AND GO NE 0.6 KM (0.4 MI)
 JV6678'THROUGH THE GATE FOR THE WSSC PROPERTY TO THE SW SIDE OF ROCKY GORGE
 JV6678'DAM.  GO LEFT NNW THROUGH THE GATE TURN RIGHT AND GO NE ALONG THE
 JV6678'FENCE .30 M (0.98 FT) TO THE STATION. OWNERSHIP-WASHINGTON SUBURBAN
 JV6678'SANITARY COMMISSION THE STATION MARK IS A STANDARD WSSC BRASS DISK
 JV6678'STAMPED 19794 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M
 JV6678'(0.7 FT) IN DIAMETER FLUSH IN THE GRASS. IT IS 9.56 M (31.36 FT) WEST
 JV6678'OF THE NORTH FENCE POST, 11.64 M (38.19 FT) NNE OF THE SOUTH GATE
 JV6678'POST FOR THE GATE THAT IS ACROSS THE DAM, AND 1.33 M (4.36 FT) NW OF
 JV6678'A FENCE POST. NO REFERENCES WERE ESTABLISHED AT THIS TIME. NO
 JV6678'STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 JV6678
 JV6678                          STATION RECOVERY (1991)
 JV6678
 JV6678'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 1991
 JV6678'RECOVERED IN GOOD CONDITION.
 JV6678'COMMENT-DESCRIPTION INCORRECTLY IDENTIFIES STAMPING AS -- 19794 WSSC--
 JV6678'ACTUAL STAMPING READS -- DAM P.G.CO. WSSC --.
 JV6678'COMMENT-NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV6678'INCLUDED IN THIS GPS SURVEY PROJECT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8952 ***********************************************************************
 HV8952  DESIGNATION -  19795
 HV8952  PID         -  HV8952
 HV8952  STATE/COUNTY-  MD/MONTGOMERY
 HV8952  COUNTRY     -  US
 HV8952  USGS QUAD   -  WASHINGTON WEST (2016)
 HV8952
 HV8952                         *CURRENT SURVEY CONTROL
 HV8952  ______________________________________________________________________
 HV8952* NAD 83(2011) POSITION- 38 59 47.52524(N) 077 00 36.09615(W)   ADJUSTED
 HV8952* NAD 83(2011) ELLIP HT-    30.590 (meters)        (06/27/12)   ADJUSTED
 HV8952* NAD 83(2011) EPOCH   -  2010.00
 HV8952* NAVD 88 ORTHO HEIGHT -    62.6   (meters)      205.    (feet) VERTCON3
 HV8952  ______________________________________________________________________
 HV8952  GEOID HEIGHT    -        -31.996 (meters)                     GEOID18
 HV8952  NAD 83(2011) X  -  1,115,719.145 (meters)                     COMP
 HV8952  NAD 83(2011) Y  - -4,836,571.950 (meters)                     COMP
 HV8952  NAD 83(2011) Z  -  3,992,037.303 (meters)                     COMP
 HV8952  LAPLACE CORR    -         -3.04  (seconds)                    DEFLEC18
 HV8952
 HV8952  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8952  Standards:
 HV8952         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8952            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8952  -------------------------------------------------------------------
 HV8952  NETWORK    4.17   9.21           1.77   1.62   4.70     -0.19674790
 HV8952  -------------------------------------------------------------------
 HV8952  Click here for local accuracies and other accuracy information.
 HV8952
 HV8952.The horizontal coordinates were established by GPS observations
 HV8952.and adjusted by the National Geodetic Survey in June 2012.
 HV8952
 HV8952.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8952.been affixed to the stable North American tectonic plate. See 
 HV8952.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8952
 HV8952.The horizontal coordinates are valid at the epoch date displayed above
 HV8952.which is a decimal equivalence of Year/Month/Day.
 HV8952
 HV8952.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8952.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8952
 HV8952.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8952.GEOID18 height accuracy estimate available here.
 HV8952
 HV8952.Click photographs - Photos may exist for this station.
 HV8952
 HV8952.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8952
 HV8952.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8952
 HV8952.The ellipsoidal height was determined by GPS observations
 HV8952.and is referenced to NAD 83.
 HV8952
 HV8952. The following values were computed from the NAD 83(2011) position.
 HV8952
 HV8952;                    North         East     Units Scale Factor Converg.
 HV8952;SPC MD       -   147,621.582   399,131.422   MT  0.99995206   -0 00 22.7
 HV8952;SPC MD       -   484,321.81  1,309,483.67   sFT  0.99995206   -0 00 22.7
 HV8952;UTM  18      - 4,318,313.835   325,932.264   MT  0.99997310   -1 15 54.6
 HV8952
 HV8952!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8952!SPC MD       -   0.99999520  x   0.99995206  =   0.99994726
 HV8952!UTM  18      -   0.99999520  x   0.99997310  =   0.99996830
 HV8952
 HV8952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2593218313(NAD 83)
 HV8952
 HV8952                          SUPERSEDED SURVEY CONTROL
 HV8952
 HV8952  NAD 83(2007)-  38 59 47.52568(N)    077 00 36.09696(W) AD(2002.00) 0
 HV8952  ELLIP H (02/10/07)   30.606  (m)                       GP(2002.00)    
 HV8952  ELLIP H (08/30/02)   30.603  (m)                       GP(       ) 4 2
 HV8952  NAD 83(1991)-  38 59 47.52600(N)    077 00 36.09752(W) AD(       ) 1
 HV8952  ELLIP H (01/27/92)   30.545  (m)                       GP(       ) 4 1
 HV8952  NAD 83(1986)-  38 59 47.52475(N)    077 00 36.10802(W) AD(       ) 1
 HV8952  NGVD 29 (03/05/91)   62.8    (m)  OSU 89B  model used  GPS OBS        
 HV8952
 HV8952.Superseded values are not recommended for survey control.
 HV8952
 HV8952.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8952.See file dsdata.pdf to determine how the superseded data were derived.
 HV8952
 HV8952_MARKER: DD = SURVEY DISK
 HV8952_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8952_STAMPING: 19795
 HV8952_MARK LOGO: WSSC
 HV8952_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8952_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8952+STABILITY: SURFACE MOTION
 HV8952_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8952+SATELLITE: SATELLITE OBSERVATIONS - April 12, 2008
 HV8952
 HV8952  HISTORY     - Date     Condition        Report By
 HV8952  HISTORY     - 1989     MONUMENTED       WSSC
 HV8952  HISTORY     - 20021203 GOOD             POWELL
 HV8952  HISTORY     - 20050405 GOOD             USPSQD
 HV8952  HISTORY     - 20080412 GOOD             NGS
 HV8952
 HV8952                          STATION DESCRIPTION
 HV8952
 HV8952'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8952'THE STATION IS LOCATED ABOUT 0.8 KM (0.5 MI) EAST OF SILVER SPRING,
 HV8952'1.6 KM (1.0 MI) NW OF TAKOMA PARK, AND 3.2 KM (2.0 MI) SW OF
 HV8952'HILLANDALE. TO REACH THE STATION FROM INTERSECTION STATE ROADS RTE
 HV8952'391 (DALE DRIVE) AND RTE 320 (PINEY BRANCH RD) IN TAKOMA PARK GO NNW
 HV8952'OF RTE 391 0.3 KM (0.2 MI) TO A MACADAM PARKING LOT, TURN RIGHT AND
 HV8952'GO NE 61 M (200.1 FT) TO END OF LOT.  TURN LEFT AND GO NW 46 M
 HV8952'(150.9 FT) TO THE STATION IN THE GRASS. OWNERSHIP-MARYLAND NATIONAL
 HV8952'CAPITOL PARK AND PLANNING COMMISSION. THE STATION MARK IS A STANDARD
 HV8952'WSSC BRASS DISK STAMPED 19795 SET IN THE TOP OF A ROUND CONCRETE
 HV8952'MONUMENT 0.2 M (0.7 FT) IN DIAMETER RECESSED 0.06 M (0.20 FT) . IT IS
 HV8952'27.68 M (90.81 FT) NNE OF THE NW CORNER OF A FRAME HOUSE NUMBER 125,
 HV8952'31.02 M (101.77 FT) NW OF THE NE CORNER OF THE FRONT PORCH FOR HOUSE
 HV8952'NUMBER 125, 12.18 M (39.96 FT) WEST OF A 0.45 M (1.48 FT) CHERRY
 HV8952'TREE,AND 18.39 M (60.33 FT) WSW OF A .50 M (1.64 FT) CHERRY TREE. NO
 HV8952'REFERENCES WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS
 HV8952'AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 HV8952
 HV8952                          STATION RECOVERY (2002)
 HV8952
 HV8952'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 HV8952'WITNESS POST IS MISSING
 HV8952
 HV8952                          STATION RECOVERY (2005)
 HV8952
 HV8952'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV8952'RECOVERED IN GOOD CONDITION.
 HV8952
 HV8952                          STATION RECOVERY (2008)
 HV8952
 HV8952'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 HV8952'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8953 ***********************************************************************
 HV8953  DESIGNATION -  19797
 HV8953  PID         -  HV8953
 HV8953  STATE/COUNTY-  MD/MONTGOMERY
 HV8953  COUNTRY     -  US
 HV8953  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8953
 HV8953                         *CURRENT SURVEY CONTROL
 HV8953  ______________________________________________________________________
 HV8953* NAD 83(2011) POSITION- 38 58 40.81741(N) 076 59 28.79430(W)   ADJUSTED
 HV8953* NAD 83(2011) ELLIP HT-    11.929 (meters)        (06/27/12)   ADJUSTED
 HV8953* NAD 83(2011) EPOCH   -  2010.00
 HV8953* NAVD 88 ORTHO HEIGHT -    44.1   (meters)      145.    (feet) VERTCON3
 HV8953  ______________________________________________________________________
 HV8953  GEOID HEIGHT    -        -32.036 (meters)                     GEOID18
 HV8953  NAD 83(2011) X  -  1,117,585.267 (meters)                     COMP
 HV8953  NAD 83(2011) Y  - -4,837,454.527 (meters)                     COMP
 HV8953  NAD 83(2011) Z  -  3,990,426.597 (meters)                     COMP
 HV8953  LAPLACE CORR    -         -3.18  (seconds)                    DEFLEC18
 HV8953
 HV8953  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8953  Standards:
 HV8953         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8953            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8953  -------------------------------------------------------------------
 HV8953  NETWORK    4.06   7.92           1.16   1.95   4.04     -0.01060480
 HV8953  -------------------------------------------------------------------
 HV8953  Click here for local accuracies and other accuracy information.
 HV8953
 HV8953.The horizontal coordinates were established by GPS observations
 HV8953.and adjusted by the National Geodetic Survey in June 2012.
 HV8953
 HV8953.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8953.been affixed to the stable North American tectonic plate. See 
 HV8953.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8953
 HV8953.The horizontal coordinates are valid at the epoch date displayed above
 HV8953.which is a decimal equivalence of Year/Month/Day.
 HV8953
 HV8953.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8953.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8953
 HV8953.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8953.GEOID18 height accuracy estimate available here.
 HV8953
 HV8953.Click photographs - Photos may exist for this station.
 HV8953
 HV8953.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8953
 HV8953.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8953
 HV8953.The ellipsoidal height was determined by GPS observations
 HV8953.and is referenced to NAD 83.
 HV8953
 HV8953. The following values were computed from the NAD 83(2011) position.
 HV8953
 HV8953;                    North         East     Units Scale Factor Converg.
 HV8953;SPC MD       -   145,564.562   400,751.095   MT  0.99995143   +0 00 19.6
 HV8953;SPC MD       -   477,573.07  1,314,797.55   sFT  0.99995143   +0 00 19.6
 HV8953;UTM  18      - 4,316,221.698   327,506.392   MT  0.99996639   -1 15 10.4
 HV8953
 HV8953!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8953!SPC MD       -   0.99999813  x   0.99995143  =   0.99994956
 HV8953!UTM  18      -   0.99999813  x   0.99996639  =   0.99996452
 HV8953
 HV8953_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2750616221(NAD 83)
 HV8953
 HV8953                          SUPERSEDED SURVEY CONTROL
 HV8953
 HV8953  NAD 83(2007)-  38 58 40.81786(N)    076 59 28.79509(W) AD(2002.00) 0
 HV8953  ELLIP H (02/10/07)   11.942  (m)                       GP(2002.00)    
 HV8953  ELLIP H (08/30/02)   11.948  (m)                       GP(       ) 4 2
 HV8953  NAD 83(1991)-  38 58 40.81833(N)    076 59 28.79583(W) AD(       ) 1
 HV8953  ELLIP H (01/27/92)   11.894  (m)                       GP(       ) 4 1
 HV8953  NAD 83(1986)-  38 58 40.81693(N)    076 59 28.80627(W) AD(       ) 1
 HV8953  NGVD 29 (03/05/91)   44.3    (m)  OSU 89B  model used  GPS OBS        
 HV8953
 HV8953.Superseded values are not recommended for survey control.
 HV8953
 HV8953.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8953.See file dsdata.pdf to determine how the superseded data were derived.
 HV8953
 HV8953_MARKER: DD = SURVEY DISK
 HV8953_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8953_STAMPING: 19797
 HV8953_MARK LOGO: WSSC
 HV8953_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8953_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8953+STABILITY: SURFACE MOTION
 HV8953_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8953+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2012
 HV8953
 HV8953  HISTORY     - Date     Condition        Report By
 HV8953  HISTORY     - 1989     MONUMENTED       WSSC
 HV8953  HISTORY     - 20040318 GOOD             GEOCAC
 HV8953  HISTORY     - 20120923 GOOD             WOOLPT
 HV8953
 HV8953                          STATION DESCRIPTION
 HV8953
 HV8953'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8953'THE STATION IS LOCATED ABOUT 1.6 KM (1.0 MI) NE OF THE WASHINGTON D.
 HV8953'C. BOUNDARY LINE, 4.8 KM (3.0 MI) NW HYATTSVILLE, AND 3.2 KM
 HV8953'(2.0 MI) SE OF SILVER SPRING. TO REACH THE STATION FROM THE
 HV8953'INTERSECTION OF STATE ROAD RT 650 (NEW HAMPSHIRE AVE) AND RT 410
 HV8953'(EAST WEST HIGHWAY) IN TAKOMA PARK.  GO NE ON RTE 650 0.4 KM
 HV8953'(0.2 MI) TO THE STATION ON THE RIGHT.  THE STATION IS 1.0 M (3.3 FT)
 HV8953'SE OF A CONCRETE SIDE WALK IN FRONT OF OUR LADY OF SORROWS
 HV8953'CHURCH. OWNERSHIP--ARCHDIOCESE OF WASHINGTON D. C. THE STATION MARK
 HV8953'IS A STANDARD WSSC BRASS DISK STAMPED 19797 SET IN THE TOP OF A ROUND
 HV8953'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER AND RECESSED 0.06 M
 HV8953'(0.20 FT) . IT IS 25.15 M (82.51 FT) SW OF A REF NAIL IN THE EAST
 HV8953'SIDE OF A PEPCO POLE NUMBER 802416-4490, 16.05 M (52.66 FT) NE OF A
 HV8953'REF NAIL IN THE NW SIDE OF A PEPCO POLE NUMBER 802416-3780, 30.87 M
 HV8953'(101.28 FT) SE OF A REF NAIL IN THE NE SIDE OF A PEPCO POLE NUMBER
 HV8953'802916-8136, AND 40.63 M (133.30 FT) SOUTH OF A REF NAIL IN THE NE
 HV8953'SIDE OF A PEPCO POLE NUMBER 802916-3795. NO REFERENCES WERE
 HV8953'ESTABLISHED AT THIS TIME NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 HV8953'STATION AT THIS TIME.
 HV8953
 HV8953                          STATION RECOVERY (2004)
 HV8953
 HV8953'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV8953'RECOVERED IN GOOD CONDITION.
 HV8953
 HV8953                          STATION RECOVERY (2012)
 HV8953
 HV8953'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 HV8953'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2578 ***********************************************************************
 JV2578  DESIGNATION -  1980 WSSC
 JV2578  PID         -  JV2578
 JV2578  STATE/COUNTY-  MD/HOWARD
 JV2578  COUNTRY     -  US
 JV2578  USGS QUAD   -  WOODBINE (2016)
 JV2578
 JV2578                         *CURRENT SURVEY CONTROL
 JV2578  ______________________________________________________________________
 JV2578* NAD 83(1986) POSITION- 39 17 33.     (N) 077 03 35.     (W)   SCALED
 JV2578* NAVD 88 ORTHO HEIGHT -   136.05  (+/-2cm)      446.4   (feet) VERTCON3
 JV2578  ______________________________________________________________________
 JV2578  GEOID HEIGHT    -        -31.845 (meters)                     GEOID18
 JV2578  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2578
 JV2578.The horizontal coordinates were scaled from a map and have
 JV2578.an estimated accuracy of +/- 6 seconds.
 JV2578
 JV2578.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2578.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2578
 JV2578.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2578.GEOID18 height accuracy estimate available here.
 JV2578
 JV2578.The vertical order pertains to the NGVD 29 superseded value.
 JV2578
 JV2578.Click photographs - Photos may exist for this station.
 JV2578
 JV2578;                    North         East    Units  Estimated Accuracy
 JV2578;SPC MD       -   180,480.      394,850.      MT  (+/- 180 meters Scaled)
 JV2578
 JV2578_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ223512(NAD 83)
 JV2578
 JV2578                          SUPERSEDED SURVEY CONTROL
 JV2578
 JV2578  NGVD 29 (11/26/84)  136.265  (m)          447.06   (f) ADJUSTED    2 0
 JV2578
 JV2578.Superseded values are not recommended for survey control.
 JV2578
 JV2578.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2578.See file dsdata.pdf to determine how the superseded data were derived.
 JV2578
 JV2578_MARKER: B = BOLT
 JV2578_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2578_SP_SET: BRIDGE
 JV2578_STAMPING: 1980
 JV2578_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2578
 JV2578  HISTORY     - Date     Condition        Report By
 JV2578  HISTORY     - UNK      MONUMENTED       WSSC
 JV2578  HISTORY     - 1946     GOOD             WSSC
 JV2578
 JV2578                          STATION DESCRIPTION
 JV2578
 JV2578'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2578'0.5 MI E FROM DAISY.
 JV2578'ABOUT 0.5 MILE EAST ALONG THE OLD ABANDONED GLENWOOD-DAISY ROAD
 JV2578'FROM DAISY, HOWARD COUNTY, AT THE BRIDGE OVER CATTAIL CREEK, AND
 JV2578'IN THE TOP OF THE NORTHEAST WING WALL.  A WASHINGTON SUBURBAN
 JV2578'SANITARY DISTRICT BRASS BOLT AND COPPER WASHER, STAMPED 1980.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8210 ***********************************************************************
 DH8210  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8210  DESIGNATION -  1980S RESTORATION SITE N SET
 DH8210  PID         -  DH8210
 DH8210  STATE/COUNTY-  MD/DORCHESTER
 DH8210  COUNTRY     -  US
 DH8210  USGS QUAD   -  BLACKWATER RIVER (2016)
 DH8210
 DH8210                         *CURRENT SURVEY CONTROL
 DH8210  ______________________________________________________________________
 DH8210* NAD 83(2011) POSITION- 38 25 37.59314(N) 076 05 45.56384(W)   ADJUSTED
 DH8210* NAD 83(2011) ELLIP HT-   -34.866 (meters)        (06/27/12)   ADJUSTED
 DH8210* NAD 83(2011) EPOCH   -  2010.00
 DH8210* NAVD 88 ORTHO HEIGHT -     0.37  (meters)        1.2   (feet) GPS OBS
 DH8210  ______________________________________________________________________
 DH8210  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8210  GEOID HEIGHT    -        -35.194 (meters)                     GEOID03
 DH8210  GEOID HEIGHT    -        -35.232 (meters)                     GEOID18
 DH8210  NAD 83(2011) X  -  1,202,218.796 (meters)                     COMP
 DH8210  NAD 83(2011) Y  - -4,856,483.157 (meters)                     COMP
 DH8210  NAD 83(2011) Z  -  3,942,672.235 (meters)                     COMP
 DH8210  LAPLACE CORR    -         -2.63  (seconds)                    DEFLEC18
 DH8210
 DH8210  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8210  Standards:
 DH8210         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8210            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8210  -------------------------------------------------------------------
 DH8210  NETWORK    0.79   1.78           0.35   0.29   0.91      0.03834965
 DH8210  -------------------------------------------------------------------
 DH8210  Click here for local accuracies and other accuracy information.
 DH8210
 DH8210.The horizontal coordinates were established by GPS observations
 DH8210.and adjusted by the National Geodetic Survey in June 2012.
 DH8210
 DH8210.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8210.been affixed to the stable North American tectonic plate. See 
 DH8210.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8210
 DH8210.The horizontal coordinates are valid at the epoch date displayed above
 DH8210.which is a decimal equivalence of Year/Month/Day.
 DH8210
 DH8210.The orthometric height was determined by GPS observations and a
 DH8210.high-resolution geoid model using precise GPS observation and
 DH8210.processing techniques.
 DH8210
 DH8210.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8210.GEOID18 height accuracy estimate available here.
 DH8210
 DH8210.Click photographs - Photos may exist for this station.
 DH8210
 DH8210.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8210
 DH8210.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8210
 DH8210.The ellipsoidal height was determined by GPS observations
 DH8210.and is referenced to NAD 83.
 DH8210
 DH8210. The following values were computed from the NAD 83(2011) position.
 DH8210
 DH8210;                    North         East     Units Scale Factor Converg.
 DH8210;SPC MD       -    84,803.106   478,935.862   MT  0.99998032   +0 34 02.6
 DH8210;SPC MD       -   278,224.86  1,571,308.74   sFT  0.99998032   +0 34 02.6
 DH8210;UTM  18      - 4,253,774.115   404,334.432   MT  0.99971271   -0 40 52.4
 DH8210
 DH8210!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8210!SPC MD       -   1.00000547  x   0.99998032  =   0.99998579
 DH8210!UTM  18      -   1.00000547  x   0.99971271  =   0.99971818
 DH8210
 DH8210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0433453774(NAD 83)
 DH8210
 DH8210                          SUPERSEDED SURVEY CONTROL
 DH8210
 DH8210  NAD 83(2007)-  38 25 37.59323(N)    076 05 45.56460(W) AD(2002.00) B
 DH8210  ELLIP H (02/12/09)  -34.842  (m)                       GP(2002.00) 5 1
 DH8210  NAD 83(1991)-  38 25 37.59340(N)    076 05 45.56423(W) AD(       ) B
 DH8210  ELLIP H (02/28/06)  -34.833  (m)                       GP(       ) 5 1
 DH8210
 DH8210.Superseded values are not recommended for survey control.
 DH8210
 DH8210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8210.See file dsdata.pdf to determine how the superseded data were derived.
 DH8210
 DH8210_MARKER: Z = SEE DESCRIPTION
 DH8210_SETTING: 0 = UNSPECIFIED SETTING
 DH8210_SP_SET: USGS MEASURING DEVICE
 DH8210_MARK LOGO: NONE
 DH8210_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH8210_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH8210_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8210+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2005
 DH8210
 DH8210  HISTORY     - Date     Condition        Report By
 DH8210  HISTORY     - 20050920 MONUMENTED       USGS
 DH8210
 DH8210                          STATION DESCRIPTION
 DH8210
 DH8210'DESCRIBED BY US GEOLOGICAL SURVEY 2005 (GS)
 DH8210'NO DESCRIPTION PUBLISHED AS MARK IS UNAVAILABLE EXCEPT TO OFFICIAL
 DH8210'RESEARCH PERSONNEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8807 ***********************************************************************
 HV8807  DESIGNATION -  19826
 HV8807  PID         -  HV8807
 HV8807  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8807  COUNTRY     -  US
 HV8807  USGS QUAD   -  PISCATAWAY (2016)
 HV8807
 HV8807                         *CURRENT SURVEY CONTROL
 HV8807  ______________________________________________________________________
 HV8807* NAD 83(2011) POSITION- 38 41 08.90417(N) 076 59 41.49257(W)   ADJUSTED
 HV8807* NAD 83(2011) ELLIP HT-   -12.950 (meters)        (06/27/12)   ADJUSTED
 HV8807* NAD 83(2011) EPOCH   -  2010.00
 HV8807* NAVD 88 ORTHO HEIGHT -    19.8   (meters)       65.    (feet) VERTCON3
 HV8807  ______________________________________________________________________
 HV8807  GEOID HEIGHT    -        -32.545 (meters)                     GEOID18
 HV8807  NAD 83(2011) X  -  1,121,860.280 (meters)                     COMP
 HV8807  NAD 83(2011) Y  - -4,857,322.285 (meters)                     COMP
 HV8807  NAD 83(2011) Z  -  3,965,142.513 (meters)                     COMP
 HV8807  LAPLACE CORR    -         -3.60  (seconds)                    DEFLEC18
 HV8807
 HV8807  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8807  Standards:
 HV8807         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8807            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8807  -------------------------------------------------------------------
 HV8807  NETWORK    1.19   2.57           0.42   0.53   1.31     -0.31263857
 HV8807  -------------------------------------------------------------------
 HV8807  Click here for local accuracies and other accuracy information.
 HV8807
 HV8807.The horizontal coordinates were established by GPS observations
 HV8807.and adjusted by the National Geodetic Survey in June 2012.
 HV8807
 HV8807.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8807.been affixed to the stable North American tectonic plate. See 
 HV8807.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8807
 HV8807.The horizontal coordinates are valid at the epoch date displayed above
 HV8807.which is a decimal equivalence of Year/Month/Day.
 HV8807
 HV8807.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8807.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8807
 HV8807.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8807.GEOID18 height accuracy estimate available here.
 HV8807
 HV8807.Click photographs - Photos may exist for this station.
 HV8807
 HV8807.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8807
 HV8807.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8807
 HV8807.The ellipsoidal height was determined by GPS observations
 HV8807.and is referenced to NAD 83.
 HV8807
 HV8807. The following values were computed from the NAD 83(2011) position.
 HV8807
 HV8807;                    North         East     Units Scale Factor Converg.
 HV8807;SPC MD       -   113,128.543   400,447.285   MT  0.99995532   +0 00 11.6
 HV8807;SPC MD       -   371,155.89  1,313,800.80   sFT  0.99995532   +0 00 11.6
 HV8807;SPC VA N     - 2,114,196.821 3,630,947.087   MT  0.99994909   +0 56 21.8
 HV8807;SPC VA N     - 6,936,327.40 11,912,532.23   sFT  0.99994909   +0 56 21.8
 HV8807;UTM  18      - 4,283,799.540   326,492.567   MT  0.99997073   -1 14 49.9
 HV8807
 HV8807!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8807!SPC MD       -   1.00000203  x   0.99995532  =   0.99995735
 HV8807!SPC VA N     -   1.00000203  x   0.99994909  =   0.99995112
 HV8807!UTM  18      -   1.00000203  x   0.99997073  =   0.99997276
 HV8807
 HV8807_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2649283799(NAD 83)
 HV8807
 HV8807                          SUPERSEDED SURVEY CONTROL
 HV8807
 HV8807  NAD 83(2007)-  38 41 08.90609(N)    076 59 41.50291(W) AD(2002.00) 0
 HV8807  ELLIP H (02/10/07)  -12.919  (m)                       GP(2002.00)    
 HV8807  ELLIP H (08/30/02)  -12.667  (m)                       GP(       ) 4 2
 HV8807  NAD 83(1993)-  38 41 08.90546(N)    076 59 41.49136(W) AD(       ) 2
 HV8807  ELLIP H (11/14/94)  -12.862  (m)                       GP(       ) 4 2
 HV8807  NAD 83(1991)-  38 41 08.90431(N)    076 59 41.49171(W) AD(       ) 2
 HV8807  ELLIP H (01/27/92)  -12.720  (m)                       GP(       ) 4 1
 HV8807  NAD 83(1986)-  38 41 08.90501(N)    076 59 41.50539(W) AD(       ) 2
 HV8807  NGVD 29 (07/06/90)   20.1    (m)  RAPSU86  model used  GPS OBS        
 HV8807
 HV8807.Superseded values are not recommended for survey control.
 HV8807
 HV8807.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8807.See file dsdata.pdf to determine how the superseded data were derived.
 HV8807
 HV8807_MARKER: DD = SURVEY DISK
 HV8807_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8807_STAMPING: 19826
 HV8807_MARK LOGO: WSSC
 HV8807_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8807_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8807+STABILITY: SURFACE MOTION
 HV8807_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8807+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HV8807
 HV8807  HISTORY     - Date     Condition        Report By
 HV8807  HISTORY     - 1989     MONUMENTED       WSSC
 HV8807
 HV8807                          STATION DESCRIPTION
 HV8807
 HV8807'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8807'THE STATION IS LOCATED ABOUT 18.15 KM (11.30 MI) NORTHEAST OF INDIAN
 HV8807'HEAD, 7.58 KM (4.70 MI) NORTHEAST OF A POINT WHERE STATE HIGHWAY 210
 HV8807'CROSSES THE CHARLES-PRINCE GEORGES COUNTY LINE AND IN THE NORTHWEST
 HV8807'QUADRANT OF THE INTERSECTION OF STATE HIGHWAY 210 AND FARMINGTON ROAD.
 HV8807'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8807'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 210 AND
 HV8807'373 (LIVINGSTON ROAD) WHICH IS ABOUT 1.61 KM (1.00 MI) EAST OF
 HV8807'ACCOKEEK, GO NORTHEAST ON STATE HIGHWAY 210 FOR 2.26 KM (1.40 MI) TO
 HV8807'THE STATION ON THE LEFT IN A GRASS STRIP BETWEEN THE SOUTHBOUND LANE
 HV8807'OF STATE HIGHWAY 210 AND A SERVICE ROAD.  THIS POINT IS ALSO JUST
 HV8807'NORTH OF FARMINGTON ROAD.
 HV8807'THE STATION MARK IS A WASHINGTON SUBURBAN SANITARY COMMISSION DISK SET
 HV8807'IN THE TOP OF A 0.25 M (0.8 FT) ROUND CONCRETE MONUMENT WHICH IS
 HV8807'RECESSED ABOUT 0.4 FT BELOW THE SURFACE OF THE GROUND.  IT IS 18.85 M
 HV8807'(61.8 FT) NORTHWEST OF THE CENTER OF THE SOUTH BOUND LANE OF STATE
 HV8807'HIGHWAY 210, 61 M (200.1 FT) NORTHEAST OF THE CENTERLINE OF FARMINGTON
 HV8807'ROAD, 15.81 M (51.9 FT) NORTHEAST OF A WASHINGTON GAS AND LIGHT
 HV8807'COMPANY UNDERGROUND LINE MARKER PIPE, 22.61 M (74.2 FT) EAST OF A
 HV8807'POWERLINE POLE WHICH HAS NO NUMBER, 6.71 M (22.0 FT) SOUTHEAST OF THE
 HV8807'CENTERLINE OF THE SERVICE ROAD AND 28.61 M (93.9 FT) SOUTHEAST OF A
 HV8807'TACK IN THE TOP OF A WOOD FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8808 ***********************************************************************
 HV8808  DESIGNATION -  19827
 HV8808  PID         -  HV8808
 HV8808  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8808  COUNTRY     -  US
 HV8808  USGS QUAD   -  PISCATAWAY (2016)
 HV8808
 HV8808                         *CURRENT SURVEY CONTROL
 HV8808  ______________________________________________________________________
 HV8808* NAD 83(2011) POSITION- 38 43 55.98523(N) 076 59 25.62020(W)   ADJUSTED
 HV8808* NAD 83(2011) ELLIP HT-   -18.025 (meters)        (06/27/12)   ADJUSTED
 HV8808* NAD 83(2011) EPOCH   -  2010.00
 HV8808* NAVD 88 ORTHO HEIGHT -    14.7   (meters)       48.    (feet) VERTCON3
 HV8808  ______________________________________________________________________
 HV8808  GEOID HEIGHT    -        -32.454 (meters)                     GEOID18
 HV8808  NAD 83(2011) X  -  1,121,507.858 (meters)                     COMP
 HV8808  NAD 83(2011) Y  - -4,854,092.829 (meters)                     COMP
 HV8808  NAD 83(2011) Z  -  3,969,159.699 (meters)                     COMP
 HV8808  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 HV8808
 HV8808  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8808  Standards:
 HV8808         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8808            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8808  -------------------------------------------------------------------
 HV8808  NETWORK    1.22   2.67           0.43   0.54   1.36     -0.30075558
 HV8808  -------------------------------------------------------------------
 HV8808  Click here for local accuracies and other accuracy information.
 HV8808
 HV8808.The horizontal coordinates were established by GPS observations
 HV8808.and adjusted by the National Geodetic Survey in June 2012.
 HV8808
 HV8808.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8808.been affixed to the stable North American tectonic plate. See 
 HV8808.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8808
 HV8808.The horizontal coordinates are valid at the epoch date displayed above
 HV8808.which is a decimal equivalence of Year/Month/Day.
 HV8808
 HV8808.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8808.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8808
 HV8808.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8808.GEOID18 height accuracy estimate available here.
 HV8808
 HV8808.Click photographs - Photos may exist for this station.
 HV8808
 HV8808.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8808
 HV8808.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8808
 HV8808.The ellipsoidal height was determined by GPS observations
 HV8808.and is referenced to NAD 83.
 HV8808
 HV8808. The following values were computed from the NAD 83(2011) position.
 HV8808
 HV8808;                    North         East     Units Scale Factor Converg.
 HV8808;SPC MD       -   118,280.464   400,830.347   MT  0.99995297   +0 00 21.6
 HV8808;SPC MD       -   388,058.49  1,315,057.56   sFT  0.99995297   +0 00 21.6
 HV8808;SPC VA N     - 2,119,354.290 3,631,245.923   MT  0.99995038   +0 56 31.7
 HV8808;SPC VA N     - 6,953,248.20 11,913,512.67   sFT  0.99995038   +0 56 31.7
 HV8808;UTM  18      - 4,288,941.950   326,988.029   MT  0.99996861   -1 14 44.5
 HV8808
 HV8808!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8808!SPC MD       -   1.00000283  x   0.99995297  =   0.99995580
 HV8808!SPC VA N     -   1.00000283  x   0.99995038  =   0.99995321
 HV8808!UTM  18      -   1.00000283  x   0.99996861  =   0.99997144
 HV8808
 HV8808_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2698888941(NAD 83)
 HV8808
 HV8808                          SUPERSEDED SURVEY CONTROL
 HV8808
 HV8808  NAD 83(2007)-  38 43 55.98715(N)    076 59 25.63055(W) AD(2002.00) 0
 HV8808  ELLIP H (02/10/07)  -17.994  (m)                       GP(2002.00)    
 HV8808  ELLIP H (08/30/02)  -17.750  (m)                       GP(       ) 4 2
 HV8808  NAD 83(1993)-  38 43 55.98663(N)    076 59 25.61888(W) AD(       ) 2
 HV8808  ELLIP H (11/14/94)  -17.872  (m)                       GP(       ) 4 2
 HV8808  NAD 83(1991)-  38 43 55.98563(N)    076 59 25.61918(W) AD(       ) 2
 HV8808  ELLIP H (01/27/92)  -17.810  (m)                       GP(       ) 4 1
 HV8808  NAD 83(1986)-  38 43 55.98602(N)    076 59 25.63283(W) AD(       ) 2
 HV8808  NGVD 29 (07/06/90)   14.9    (m)  RAPSU86  model used  GPS OBS        
 HV8808
 HV8808.Superseded values are not recommended for survey control.
 HV8808
 HV8808.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8808.See file dsdata.pdf to determine how the superseded data were derived.
 HV8808
 HV8808_MARKER: DD = SURVEY DISK
 HV8808_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8808_STAMPING: 19827
 HV8808_MARK LOGO: WSSC
 HV8808_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8808_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8808+STABILITY: SURFACE MOTION
 HV8808_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8808+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2004
 HV8808
 HV8808  HISTORY     - Date     Condition        Report By
 HV8808  HISTORY     - 1989     MONUMENTED       WSSC
 HV8808  HISTORY     - 20040726 GOOD             GEOCAC
 HV8808
 HV8808                          STATION DESCRIPTION
 HV8808
 HV8808'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8808'THE STATION IS LOCATED ABOUT 10.65 KM (6.60 MI) SOUTH OF OXON HILL,
 HV8808'9.68 KM (6.00 MI) NORTH OF A POINT WHERE STATE HIGHWAY 210 CROSSES THE
 HV8808'CHARLES-PRINCE GEORGES COUNTY LINE AND ON THE EAST SIDE OF STATE
 HV8808'HIGHWAY 210.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8808'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 210 AND
 HV8808'373 (LIVINGSTON ROAD) WHICH IS ABOUT 1.61 KM (1.00 MI) EAST OF
 HV8808'ACCOKEEK, GO NORTH ON STATE HIGHWAY 210 FOR 7.74 KM (4.80 MI) TO THE
 HV8808'STATION ON THE RIGHT IN A GRASS STRIP BETWEEN THE NORTHBOUND LANE OF
 HV8808'STATE HIGHWAY 210 AND A SERVICE ROAD.
 HV8808'THE STATION MARK IS A WASHINGTON SUBURBAN SANITARY COMMISSION DISK SET
 HV8808'IN THE TOP OF A 0.25 M (0.8 FT) ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HV8808'WITH THE SURFACE OF THE GROUND.  IT IS 24.20 M (79.4 FT) NORTHWEST OF
 HV8808'PEPCO POWERLINE POLE NUMBERED C525, 10.48 M (34.4 FT) SOUTHEAST OF A
 HV8808'FIRE HYDRANT, 21.67 M (71.1 FT) SOUTHEAST OF PEPCO POWERLINE POLE
 HV8808'NUMBERED 852713 AND 3.85 M (12.6 FT) SOUTHEAST OF A MANHOLE COVER.
 HV8808
 HV8808                          STATION RECOVERY (2004)
 HV8808
 HV8808'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV8808'THE STATION IS SOUTHWEST OF THE FIRE HYDRANT, SOUTHWEST OF PEPCO POWER
 HV8808'POLE 02327-6436 (REPLACING PEPCO POWER POLE 852713), AND SOUTHWEST OF
 HV8808'THE MANHOLE COVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8809 ***********************************************************************
 HV8809  DESIGNATION -  19831
 HV8809  PID         -  HV8809
 HV8809  STATE/COUNTY-  MD/CHARLES
 HV8809  COUNTRY     -  US
 HV8809  USGS QUAD   -  MOUNT VERNON (2019)
 HV8809
 HV8809                         *CURRENT SURVEY CONTROL
 HV8809  ______________________________________________________________________
 HV8809* NAD 83(2011) POSITION- 38 37 43.69248(N) 077 04 21.91852(W)   ADJUSTED
 HV8809* NAD 83(2011) ELLIP HT-    21.636 (meters)        (06/27/12)   ADJUSTED
 HV8809* NAD 83(2011) EPOCH   -  2010.00
 HV8809* NAVD 88 ORTHO HEIGHT -    54.5   (meters)      179.    (feet) VERTCON3
 HV8809  ______________________________________________________________________
 HV8809  GEOID HEIGHT    -        -32.550 (meters)                     GEOID18
 HV8809  NAD 83(2011) X  -  1,116,145.837 (meters)                     COMP
 HV8809  NAD 83(2011) Y  - -4,862,721.930 (meters)                     COMP
 HV8809  NAD 83(2011) Z  -  3,960,222.705 (meters)                     COMP
 HV8809  LAPLACE CORR    -         -2.21  (seconds)                    DEFLEC18
 HV8809
 HV8809  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8809  Standards:
 HV8809         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8809            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8809  -------------------------------------------------------------------
 HV8809  NETWORK    1.15   2.45           0.41   0.51   1.25     -0.28628582
 HV8809  -------------------------------------------------------------------
 HV8809  Click here for local accuracies and other accuracy information.
 HV8809
 HV8809.The horizontal coordinates were established by GPS observations
 HV8809.and adjusted by the National Geodetic Survey in June 2012.
 HV8809
 HV8809.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8809.been affixed to the stable North American tectonic plate. See 
 HV8809.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8809
 HV8809.The horizontal coordinates are valid at the epoch date displayed above
 HV8809.which is a decimal equivalence of Year/Month/Day.
 HV8809
 HV8809.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8809.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8809
 HV8809.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8809.GEOID18 height accuracy estimate available here.
 HV8809
 HV8809.Click photographs - Photos may exist for this station.
 HV8809
 HV8809.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8809
 HV8809.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8809
 HV8809.The ellipsoidal height was determined by GPS observations
 HV8809.and is referenced to NAD 83.
 HV8809
 HV8809. The following values were computed from the NAD 83(2011) position.
 HV8809
 HV8809;                    North         East     Units Scale Factor Converg.
 HV8809;SPC MD       -   106,803.455   393,664.946   MT  0.99995909   -0 02 44.4
 HV8809;SPC MD       -   350,404.34  1,291,549.08   sFT  0.99995909   -0 02 44.4
 HV8809;SPC VA N     - 2,107,761.804 3,624,269.066   MT  0.99994840   +0 53 26.8
 HV8809;SPC VA N     - 6,915,215.19 11,890,622.76   sFT  0.99994840   +0 53 26.8
 HV8809;UTM  18      - 4,277,623.682   319,573.711   MT  1.00000090   -1 17 39.5
 HV8809
 HV8809!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8809!SPC MD       -   0.99999661  x   0.99995909  =   0.99995570
 HV8809!SPC VA N     -   0.99999661  x   0.99994840  =   0.99994501
 HV8809!UTM  18      -   0.99999661  x   1.00000090  =   0.99999751
 HV8809
 HV8809_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1957377623(NAD 83)
 HV8809
 HV8809                          SUPERSEDED SURVEY CONTROL
 HV8809
 HV8809  NAD 83(2007)-  38 37 43.69439(N)    077 04 21.92886(W) AD(2002.00) 0
 HV8809  ELLIP H (02/10/07)   21.667  (m)                       GP(2002.00)    
 HV8809  ELLIP H (08/30/02)   21.914  (m)                       GP(       ) 4 2
 HV8809  NAD 83(1993)-  38 37 43.69311(N)    077 04 21.91798(W) AD(       ) 2
 HV8809  ELLIP H (11/14/94)   21.659  (m)                       GP(       ) 4 2
 HV8809  NAD 83(1991)-  38 37 43.69267(N)    077 04 21.91868(W) AD(       ) 2
 HV8809  ELLIP H (01/27/92)   21.888  (m)                       GP(       ) 4 1
 HV8809  NAD 83(1986)-  38 37 43.69381(N)    077 04 21.93260(W) AD(       ) 2
 HV8809  NGVD 29 (07/06/90)   54.7    (m)  RAPSU86  model used  GPS OBS        
 HV8809
 HV8809.Superseded values are not recommended for survey control.
 HV8809
 HV8809.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8809.See file dsdata.pdf to determine how the superseded data were derived.
 HV8809
 HV8809_MARKER: DD = SURVEY DISK
 HV8809_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8809_STAMPING: 19831
 HV8809_MARK LOGO: WSSC
 HV8809_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8809_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8809+STABILITY: SURFACE MOTION
 HV8809_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8809+SATELLITE: SATELLITE OBSERVATIONS - April 08, 2004
 HV8809
 HV8809  HISTORY     - Date     Condition        Report By
 HV8809  HISTORY     - 1989     MONUMENTED       WSSC
 HV8809  HISTORY     - 20040408 GOOD             URS
 HV8809
 HV8809                          STATION DESCRIPTION
 HV8809
 HV8809'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8809'THE STATION IS LOCATED ABOUT 8.7 KM (5.40 MI) NORTHEAST OF INDIAN
 HV8809'HEAD, 1.61 KM (1.00 MI) SOUTHWEST OF A POINT WHERE STATE HIGHWAY 210
 HV8809'CROSSES THE CHARLES-PRINCE GEORGES COUNTY LINE AND IN THE TOWN OF
 HV8809'BRYANS ROAD.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8809'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 210 AND 227 AT
 HV8809'BRYANSROAD, GO NORTH ON STATE HIGHWAY 227 (MARSHALL HALL ROAD) FOR
 HV8809'0.16 KM (0.10 MI) TO THE STATION ON THE LEFT IN A GRASS STRIP BETWEEN
 HV8809'STATE HIGHWAY 227 AND A PARKING AREA FOR A GOODYEAR TIRE STORE, JUST
 HV8809'SOUTH OF THE INTERSECTION OF STATE HIGHWAY 227 AND MATHEWS ROAD.
 HV8809'THE STATION MARK IS A WASHINGTON SUBURBAN SANITARY COMMISSION DISK SET
 HV8809'IN THE TOP OF A 0.25 M (0.8 FT) ROUND CONCRETE MONUMENT WHICH IS
 HV8809'RECESSED ABOUT 0.13 M (0.4 FT) BELOW THE SURFACE OF THE GROUND.  IT IS
 HV8809'14.09 M (46.2 FT) EAST OF A SIGN POST FOR THE HIGHS DAIRY STORE, 34.73
 HV8809'M (113.9 FT) SOUTHEAST OF THE EAST CORNER OF THE GOODYEAR TIRE STORE,
 HV8809'28.58 M (93.8 FT) SOUTH OF A POWERLINE POLE WITH NO NUMBER, 15.08 M
 HV8809'(49.5 FT) SOUTHWEST OF A POWERLINE POLE NUMBERED 5, 8.54 M (28.0 FT)
 HV8809'NORTHWEST OF THE CENTER OF STATE HIGHWAY 227 AND 29.1 M (95.5 FT)
 HV8809'SOUTHWEST OF THE CENTER OF MATTHEW ROAD.
 HV8809
 HV8809                          STATION RECOVERY (2004)
 HV8809
 HV8809'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 HV8809'STATION STAMPED 19831 RESET
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9888 ***********************************************************************
 HV9888  DESIGNATION -  19843
 HV9888  PID         -  HV9888
 HV9888  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9888  COUNTRY     -  US
 HV9888  USGS QUAD   -  BRISTOL (2016)
 HV9888
 HV9888                         *CURRENT SURVEY CONTROL
 HV9888  ______________________________________________________________________
 HV9888* NAD 83(2011) POSITION- 38 51 34.24496(N) 076 43 30.13132(W)   ADJUSTED
 HV9888* NAD 83(2011) ELLIP HT-    10.826 (meters)        (06/27/12)   ADJUSTED
 HV9888* NAD 83(2011) EPOCH   -  2010.00
 HV9888* NAVD 88 ORTHO HEIGHT -    43.7   (meters)      143.    (feet) GPS OBS
 HV9888  ______________________________________________________________________
 HV9888  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9888  GEOID HEIGHT    -        -33.270 (meters)                     GEOID93
 HV9888  GEOID HEIGHT    -        -32.912 (meters)                     GEOID18
 HV9888  NAD 83(2011) X  -  1,141,953.664 (meters)                     COMP
 HV9888  NAD 83(2011) Y  - -4,840,250.195 (meters)                     COMP
 HV9888  NAD 83(2011) Z  -  3,980,191.348 (meters)                     COMP
 HV9888  LAPLACE CORR    -         -5.97  (seconds)                    DEFLEC18
 HV9888
 HV9888  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9888  Standards:
 HV9888         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9888            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9888  -------------------------------------------------------------------
 HV9888  NETWORK    1.31   2.82           0.52   0.55   1.44     -0.00765978
 HV9888  -------------------------------------------------------------------
 HV9888  Click here for local accuracies and other accuracy information.
 HV9888
 HV9888.The horizontal coordinates were established by GPS observations
 HV9888.and adjusted by the National Geodetic Survey in June 2012.
 HV9888
 HV9888.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9888.been affixed to the stable North American tectonic plate. See 
 HV9888.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9888
 HV9888.The horizontal coordinates are valid at the epoch date displayed above
 HV9888.which is a decimal equivalence of Year/Month/Day.
 HV9888
 HV9888.The orthometric height was determined by GPS observations and a
 HV9888.high-resolution geoid model.
 HV9888
 HV9888.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9888.GEOID18 height accuracy estimate available here.
 HV9888
 HV9888.Click photographs - Photos may exist for this station.
 HV9888
 HV9888.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9888
 HV9888.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9888
 HV9888.The ellipsoidal height was determined by GPS observations
 HV9888.and is referenced to NAD 83.
 HV9888
 HV9888. The following values were computed from the NAD 83(2011) position.
 HV9888
 HV9888;                    North         East     Units Scale Factor Converg.
 HV9888;SPC MD       -   132,446.820   423,864.900   MT  0.99994989   +0 10 21.3
 HV9888;SPC MD       -   434,535.94  1,390,630.09   sFT  0.99994989   +0 10 21.3
 HV9888;UTM  18      - 4,302,600.619   350,326.265   MT  0.99987586   -1 04 57.0
 HV9888
 HV9888!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9888!SPC MD       -   0.99999830  x   0.99994989  =   0.99994819
 HV9888!UTM  18      -   0.99999830  x   0.99987586  =   0.99987416
 HV9888
 HV9888_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5032602600(NAD 83)
 HV9888
 HV9888                          SUPERSEDED SURVEY CONTROL
 HV9888
 HV9888  NAD 83(2007)-  38 51 34.24527(N)    076 43 30.13225(W) AD(2002.00) 0
 HV9888  ELLIP H (02/10/07)   10.829  (m)                       GP(2002.00)    
 HV9888  ELLIP H (08/30/02)   10.826  (m)                       GP(       ) 4 2
 HV9888  ELLIP H (09/09/94)   10.793  (m)                       GP(       ) 4 1
 HV9888  NAD 83(1991)-  38 51 34.24532(N)    076 43 30.13257(W) AD(       ) 1
 HV9888
 HV9888.Superseded values are not recommended for survey control.
 HV9888
 HV9888.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9888.See file dsdata.pdf to determine how the superseded data were derived.
 HV9888
 HV9888_MARKER: DD = SURVEY DISK
 HV9888_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9888_STAMPING: 19843
 HV9888_MARK LOGO: WSSC
 HV9888_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV9888_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9888+STABILITY: SURFACE MOTION
 HV9888_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9888+SATELLITE: SATELLITE OBSERVATIONS - April 24, 1993
 HV9888
 HV9888  HISTORY     - Date     Condition        Report By
 HV9888  HISTORY     - 1989     MONUMENTED       WSSC
 HV9888  HISTORY     - 1992     GOOD             NGS
 HV9888  HISTORY     - 19930424 GOOD
 HV9888  HISTORY     - 20080701 MARK NOT FOUND   MDSHA
 HV9888
 HV9888                          STATION DESCRIPTION
 HV9888
 HV9888'DESCRIBED BY NATIONAL GEODETIC SURVEY 1992
 HV9888'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9888'APRROXIMATELY 4.0 MI (6.4 KM) SOUTH OF THE TOWN OF BOWIE.
 HV9888'TO RWACH THE STATION FROM THE INTERSECTION OF CENTRAL AVENUE (S.R.
 HV9888'214) AND CRAIN HIGHWAY SOUTH (U.S. 301), PROCEED SOUTH ON CRAIN
 HV9888'HIGHWAY SOUTH FOR 2.7 MI (4.3 KM) TO THE STATION IN THE MEDIAN OF THE
 HV9888'HIGHWAY, AT THE INTERSECTION OF CRAIN HIGHWAY AND LEELAND ROAD.
 HV9888'NOTE--THE STATION IS APPROXIMATELY 0.5 MI (0.8 KM) NORTH OF THE
 HV9888'INTERSECTION OF CRAIN HIGHWAY AND SWANSON ROAD.
 HV9888'THE DISK IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE MONUMENT,
 HV9888'APPROXIMATELY FLUSH WITH GROUND LEVEL, AND STAMPED 19843.  THE DISK
 HV9888'IS LOCATED 52.5 FT (16.0 M) WEST OF THE NOTHBOUND LANE OF U.S. 301,
 HV9888'46.5 FT (14.2 M) EAST OF THE SOUTHBOUND LANE OF U.S. 301, AND 9.5 FT
 HV9888'(2.9 M) NORTH OF THE EDGE OF PAVEMENT CROSSING THE MEDIAN.
 HV9888
 HV9888                          STATION RECOVERY (1993)
 HV9888
 HV9888'RECOVERED 1993
 HV9888'RECOVERED IN GOOD CONDITION.
 HV9888
 HV9888                          STATION RECOVERY (2008)
 HV9888
 HV9888'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 HV9888'PAVED MEDIAN CROSSOVER HAS BEEN EXPANDED AND THE MARK IS GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6679 ***********************************************************************
 JV6679  DESIGNATION -  19859
 JV6679  PID         -  JV6679
 JV6679  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6679  COUNTRY     -  US
 JV6679  USGS QUAD   -  ODENTON (2016)
 JV6679
 JV6679                         *CURRENT SURVEY CONTROL
 JV6679  ______________________________________________________________________
 JV6679* NAD 83(2011) POSITION- 39 00 38.11647(N) 076 44 38.84109(W)   ADJUSTED
 JV6679* NAD 83(2011) ELLIP HT-   -11.724 (meters)        (06/27/12)   ADJUSTED
 JV6679* NAD 83(2011) EPOCH   -  2010.00
 JV6679* NAVD 88 ORTHO HEIGHT -    20.9   (meters)       69.    (feet) VERTCON3
 JV6679  ______________________________________________________________________
 JV6679  GEOID HEIGHT    -        -32.631 (meters)                     GEOID18
 JV6679  NAD 83(2011) X  -  1,137,920.425 (meters)                     COMP
 JV6679  NAD 83(2011) Y  - -4,830,354.205 (meters)                     COMP
 JV6679  NAD 83(2011) Z  -  3,993,223.050 (meters)                     COMP
 JV6679  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 JV6679
 JV6679  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6679  Standards:
 JV6679         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6679            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6679  -------------------------------------------------------------------
 JV6679  NETWORK    1.54   2.45           0.41   0.74   1.25      0.26764506
 JV6679  -------------------------------------------------------------------
 JV6679  Click here for local accuracies and other accuracy information.
 JV6679
 JV6679.The horizontal coordinates were established by GPS observations
 JV6679.and adjusted by the National Geodetic Survey in June 2012.
 JV6679
 JV6679.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6679.been affixed to the stable North American tectonic plate. See 
 JV6679.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6679
 JV6679.The horizontal coordinates are valid at the epoch date displayed above
 JV6679.which is a decimal equivalence of Year/Month/Day.
 JV6679
 JV6679.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6679.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6679
 JV6679.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6679.GEOID18 height accuracy estimate available here.
 JV6679
 JV6679.Click photographs - Photos may exist for this station.
 JV6679
 JV6679.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6679
 JV6679.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6679
 JV6679.The ellipsoidal height was determined by GPS observations
 JV6679.and is referenced to NAD 83.
 JV6679
 JV6679. The following values were computed from the NAD 83(2011) position.
 JV6679
 JV6679;                    North         East     Units Scale Factor Converg.
 JV6679;SPC MD       -   149,212.634   422,161.362   MT  0.99995261   +0 09 38.2
 JV6679;SPC MD       -   489,541.78  1,385,041.07   sFT  0.99995261   +0 09 38.2
 JV6679;UTM  18      - 4,319,398.550   348,990.989   MT  0.99988080   -1 05 53.1
 JV6679
 JV6679!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6679!SPC MD       -   1.00000184  x   0.99995261  =   0.99995445
 JV6679!UTM  18      -   1.00000184  x   0.99988080  =   0.99988264
 JV6679
 JV6679_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4899019398(NAD 83)
 JV6679
 JV6679                          SUPERSEDED SURVEY CONTROL
 JV6679
 JV6679  NAD 83(2007)-  39 00 38.11676(N)    076 44 38.84183(W) AD(2002.00) 0
 JV6679  ELLIP H (02/10/07)  -11.684  (m)                       GP(2002.00)    
 JV6679  ELLIP H (08/30/02)  -11.688  (m)                       GP(       ) 4 2
 JV6679  NAD 83(1991)-  39 00 38.11649(N)    076 44 38.84149(W) AD(       ) 1
 JV6679  ELLIP H (01/27/92)  -11.733  (m)                       GP(       ) 4 1
 JV6679  NAD 83(1986)-  39 00 38.11481(N)    076 44 38.85227(W) AD(       ) 1
 JV6679  NGVD 29 (03/05/91)   21.1    (m)  OSU 89B  model used  GPS OBS        
 JV6679
 JV6679.Superseded values are not recommended for survey control.
 JV6679
 JV6679.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6679.See file dsdata.pdf to determine how the superseded data were derived.
 JV6679
 JV6679_MARKER: DD = SURVEY DISK
 JV6679_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6679_STAMPING: 19859
 JV6679_MARK LOGO: WSSC
 JV6679_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6679_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6679+STABILITY: SURFACE MOTION
 JV6679_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6679+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6679
 JV6679  HISTORY     - Date     Condition        Report By
 JV6679  HISTORY     - 1989     MONUMENTED       WSSC
 JV6679  HISTORY     - 20030905 GOOD             GEOCAC
 JV6679
 JV6679                          STATION DESCRIPTION
 JV6679
 JV6679'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6679'THE STATION IS LOCATED ABOUT 1.6 KM (1.0 MI) SE OF BOWIE STATE
 JV6679'COLLEGE, 2.9 KM (1.8 MI) NE OF OLD TOWN BOWIE, AND 12.1 KM (7.5 MI)
 JV6679'SE OF LAUREL. TO REACH THE STATION FROM THE INTERSECTION FROM STATE
 JV6679'HYWS RT 197 (LAUREL-BOWIE ROAD) AND RT 450 (ANNAPOLIS RD) IN BOWIE GO
 JV6679'NORTH ON RT 197 1.6 KM (1.0 MI) TO OLD CHAPEL RD, TURN RIGHT AND GO
 JV6679'EAST 2.1 KM (1.3 MI) TO RACETRACK RD.  TURN LEFT AND GO NW 1.6 KM
 JV6679'(1.0 MI) TO DRIVE WAY ENTRANCE FOR HORSEPEN BRANCH SEWER PUMPING
 JV6679'STATION.  TURN RIGHT AND GO NE 0.5 KM (0.3 MI) TO STATION ON RIGHT
 JV6679'4.6 M (15.1 FT) SW OF GATE. OWNERSHIP--WASHINGTON SUBURBAN SANITARY
 JV6679'COMMISSION THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 JV6679'19859 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 JV6679'DIAMETER SET FLUSH IT IS 10.25 M (33.63 FT) SOUTH OF THE EAST CORNER
 JV6679'OF AN ELECTRIC UTILITY BOX, 9.76 M (32.02 FT) SOUTH OF THE NORTH FACE
 JV6679'OF A GATE POST, 4.57 M (14.99 FT) SW OF THE SOUTH FACE OF A GATE
 JV6679'POST, AND 33.84 M (111.02 FT) NE OF A REF NAIL IN THE NORTH SIDE OF A
 JV6679'B G AND E POLE NUMBER 128600. NO REFERENCES WERE ESTABLISHED AT THIS
 JV6679'TIME NO STATIONS SERVE AS AN AZIMUTH MARKS FOR THIS STATION AT THIS
 JV6679'TIME.
 JV6679
 JV6679                          STATION RECOVERY (2003)
 JV6679
 JV6679'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV6679'STATION IS APPROXIMATELY 4.8 FEET SOUTH OF A 9-INCH METAL POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6680 ***********************************************************************
 JV6680  DESIGNATION -  19861
 JV6680  PID         -  JV6680
 JV6680  STATE/COUNTY-  MD/MONTGOMERY
 JV6680  COUNTRY     -  US
 JV6680  USGS QUAD   -  DAMASCUS (2016)
 JV6680
 JV6680                         *CURRENT SURVEY CONTROL
 JV6680  ______________________________________________________________________
 JV6680* NAD 83(2011) POSITION- 39 16 00.69104(N) 077 12 26.01560(W)   ADJUSTED
 JV6680* NAD 83(2011) ELLIP HT-   201.026 (meters)        (06/27/12)   ADJUSTED
 JV6680* NAD 83(2011) EPOCH   -  2010.00
 JV6680* NAVD 88 ORTHO HEIGHT -   233.0   (meters)      764.    (feet) VERTCON3
 JV6680  ______________________________________________________________________
 JV6680  GEOID HEIGHT    -        -31.841 (meters)                     GEOID18
 JV6680  NAD 83(2011) X  -  1,094,901.529 (meters)                     COMP
 JV6680  NAD 83(2011) Y  - -4,822,042.136 (meters)                     COMP
 JV6680  NAD 83(2011) Z  -  4,015,424.575 (meters)                     COMP
 JV6680  LAPLACE CORR    -          2.15  (seconds)                    DEFLEC18
 JV6680
 JV6680  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6680  Standards:
 JV6680         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6680            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6680  -------------------------------------------------------------------
 JV6680  NETWORK    1.56   3.31           0.55   0.69   1.69      0.34751070
 JV6680  -------------------------------------------------------------------
 JV6680  Click here for local accuracies and other accuracy information.
 JV6680
 JV6680.The horizontal coordinates were established by GPS observations
 JV6680.and adjusted by the National Geodetic Survey in June 2012.
 JV6680
 JV6680.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6680.been affixed to the stable North American tectonic plate. See 
 JV6680.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6680
 JV6680.The horizontal coordinates are valid at the epoch date displayed above
 JV6680.which is a decimal equivalence of Year/Month/Day.
 JV6680
 JV6680.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6680.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6680
 JV6680.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6680.GEOID18 height accuracy estimate available here.
 JV6680
 JV6680.Click photographs - Photos may exist for this station.
 JV6680
 JV6680.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6680
 JV6680.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6680
 JV6680.The ellipsoidal height was determined by GPS observations
 JV6680.and is referenced to NAD 83.
 JV6680
 JV6680. The following values were computed from the NAD 83(2011) position.
 JV6680
 JV6680;                    North         East     Units Scale Factor Converg.
 JV6680;SPC MD       -   177,651.463   382,116.832   MT  0.99997309   -0 07 48.2
 JV6680;SPC MD       -   582,844.84  1,253,661.64   sFT  0.99997309   -0 07 48.2
 JV6680;UTM  18      - 4,348,712.930   309,582.932   MT  1.00004646   -1 23 50.8
 JV6680
 JV6680!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6680!SPC MD       -   0.99996846  x   0.99997309  =   0.99994155
 JV6680!UTM  18      -   0.99996846  x   1.00004646  =   1.00001492
 JV6680
 JV6680_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0958248712(NAD 83)
 JV6680
 JV6680                          SUPERSEDED SURVEY CONTROL
 JV6680
 JV6680  NAD 83(2007)-  39 16 00.69117(N)    077 12 26.01648(W) AD(2002.00) 0
 JV6680  ELLIP H (02/10/07)  201.076  (m)                       GP(2002.00)    
 JV6680  ELLIP H (08/30/02)  201.080  (m)                       GP(       ) 4 2
 JV6680  ELLIP H (04/01/98)  201.044  (m)                       GP(       ) 4 1
 JV6680  NAD 83(1993)-  39 16 00.69244(N)    077 12 26.01668(W) AD(       ) 1
 JV6680  ELLIP H (11/14/94)  201.038  (m)                       GP(       ) 4 2
 JV6680  NAD 83(1991)-  39 16 00.69062(N)    077 12 26.01574(W) AD(       ) 1
 JV6680  ELLIP H (01/27/92)  200.998  (m)                       GP(       ) 4 1
 JV6680  NAD 83(1986)-  39 16 00.69117(N)    077 12 26.02681(W) AD(       ) 1
 JV6680  NGVD 29 (03/05/91)  233.2    (m)  OSU 89B  model used  GPS OBS        
 JV6680
 JV6680.Superseded values are not recommended for survey control.
 JV6680
 JV6680.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6680.See file dsdata.pdf to determine how the superseded data were derived.
 JV6680
 JV6680_MARKER: DD = SURVEY DISK
 JV6680_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6680_STAMPING: 19861
 JV6680_MARK LOGO: WSSC
 JV6680_PROJECTION: RECESSED 3 CENTIMETERS
 JV6680_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6680_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6680+STABILITY: SURFACE MOTION
 JV6680_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6680+SATELLITE: SATELLITE OBSERVATIONS - April 17, 2013
 JV6680
 JV6680  HISTORY     - Date     Condition        Report By
 JV6680  HISTORY     - 1989     MONUMENTED       WSSC
 JV6680  HISTORY     - 20021113 GOOD             POWELL
 JV6680  HISTORY     - 20050405 GOOD             USPSQD
 JV6680  HISTORY     - 20130417 GOOD             BASE9
 JV6680
 JV6680                          STATION DESCRIPTION
 JV6680
 JV6680'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6680'THE STATION IS LOCATED ABOUT 8.0 KM (5.0 MI) NE OF CLARKSVILLE, 2.4 KM
 JV6680'(1.5 MI) SOUTH OF DAMASCUS, AND 6.0 KM (3.7 MI) NW OF ETCHISON. TO
 JV6680'REACH THE STATION FROM THE INTERSECTION OF RTE 108 (DAMASCUS RD) AND
 JV6680'RTE 124 (WOODFIELD RD) IN DAMASCUS GO SOUTH ALONG RTE 124 2.4 KM
 JV6680'(1.5 MI) TO MOYER RD, TURN RIGHT AND GO WEST 0.16 KM (0.10 MI) TO THE
 JV6680'STATION ON THE RIGHT.  THE STATION IS IN THE GRASS BETWEEN MOYER RD
 JV6680'AND THE CONCRETE SIDEWALK. OWNERSHIP--COUNTY ROAD RIGHT-OF-WAY. THE
 JV6680'STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED 19861 SET IN THE
 JV6680'TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET
 JV6680'FLUSH. IT IS 34.21 M (112.24 FT) SW OF THE TOP AND CENTER LINE OF AN
 JV6680'ANGLE POINT OF THE EAST POST OF A WOOD FENCE OF BUILDING NUMBER
 JV6680'25019, 25.05 M (82.18 FT) SE OF THE EAST CORNER OF BUILDING NUMBER
 JV6680'25015, 13.44 M (44.09 FT) SE FROM THE NORTH SIDE OF A PEPCO LIGHT
 JV6680'POLE NUMBER F75731, AND 18.37 M (60.27 FT) NE OF A DISK ON THE NW
 JV6680'CORNER OF PEPCO ELECTRIC BOX NUMBER 30872. NO REFERENCES WERE
 JV6680'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 JV6680'STATION AT THIS TIME.
 JV6680
 JV6680                          STATION RECOVERY (2002)
 JV6680
 JV6680'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV6680'RECOVERED IN GOOD CONDITION.
 JV6680
 JV6680                          STATION RECOVERY (2005)
 JV6680
 JV6680'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6680'RECOVERED IN GOOD CONDITION.
 JV6680
 JV6680                          STATION RECOVERY (2013)
 JV6680
 JV6680'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV6680'MARK IS 1.73 M (5.7 FT) NORTHWEST OF THE BACK SIDE OF THE CURBING FOR
 JV6680'MOYER ROAD AND 1.73 M (5.7 FT) SOUTHEAST OF THE SOUTH EDGE OF THE
 JV6680'SIDEWALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6681 ***********************************************************************
 JV6681  DESIGNATION -  19862
 JV6681  PID         -  JV6681
 JV6681  STATE/COUNTY-  MD/MONTGOMERY
 JV6681  COUNTRY     -  US
 JV6681  USGS QUAD   -  KENSINGTON (2016)
 JV6681
 JV6681                         *CURRENT SURVEY CONTROL
 JV6681  ______________________________________________________________________
 JV6681* NAD 83(2011) POSITION- 39 04 53.39724(N) 077 04 34.55185(W)   ADJUSTED
 JV6681* NAD 83(2011) ELLIP HT-    77.154 (meters)        (06/27/12)   ADJUSTED
 JV6681* NAD 83(2011) EPOCH   -  2010.00
 JV6681* NAVD 88 ORTHO HEIGHT -   109.0   (meters)      358.    (feet) GPS OBS
 JV6681  ______________________________________________________________________
 JV6681  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6681  GEOID HEIGHT    -        -32.190 (meters)                     GEOID93
 JV6681  GEOID HEIGHT    -        -31.833 (meters)                     GEOID18
 JV6681  NAD 83(2011) X  -  1,108,806.352 (meters)                     COMP
 JV6681  NAD 83(2011) Y  - -4,832,103.247 (meters)                     COMP
 JV6681  NAD 83(2011) Z  -  3,999,393.025 (meters)                     COMP
 JV6681  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 JV6681
 JV6681  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6681  Standards:
 JV6681         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6681            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6681  -------------------------------------------------------------------
 JV6681  NETWORK    0.83   1.69           0.34   0.34   0.86      0.16051454
 JV6681  -------------------------------------------------------------------
 JV6681  Click here for local accuracies and other accuracy information.
 JV6681
 JV6681.The horizontal coordinates were established by GPS observations
 JV6681.and adjusted by the National Geodetic Survey in June 2012.
 JV6681
 JV6681.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6681.been affixed to the stable North American tectonic plate. See 
 JV6681.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6681
 JV6681.The horizontal coordinates are valid at the epoch date displayed above
 JV6681.which is a decimal equivalence of Year/Month/Day.
 JV6681
 JV6681.The orthometric height was determined by GPS observations and a
 JV6681.high-resolution geoid model.
 JV6681
 JV6681.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6681.GEOID18 height accuracy estimate available here.
 JV6681
 JV6681.Click photographs - Photos may exist for this station.
 JV6681
 JV6681.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6681
 JV6681.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6681
 JV6681.The ellipsoidal height was determined by GPS observations
 JV6681.and is referenced to NAD 83.
 JV6681
 JV6681. The following values were computed from the NAD 83(2011) position.
 JV6681
 JV6681;                    North         East     Units Scale Factor Converg.
 JV6681;SPC MD       -   157,056.289   393,401.364   MT  0.99995627   -0 02 52.3
 JV6681;SPC MD       -   515,275.51  1,290,684.31   sFT  0.99995627   -0 02 52.3
 JV6681;UTM  18      - 4,327,872.571   320,410.906   MT  0.99999714   -1 18 33.4
 JV6681
 JV6681!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6681!SPC MD       -   0.99998790  x   0.99995627  =   0.99994417
 JV6681!UTM  18      -   0.99998790  x   0.99999714  =   0.99998504
 JV6681
 JV6681_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2041027872(NAD 83)
 JV6681
 JV6681                          SUPERSEDED SURVEY CONTROL
 JV6681
 JV6681  NAD 83(2007)-  39 04 53.39747(N)    077 04 34.55272(W) AD(2002.00) 0
 JV6681  ELLIP H (02/10/07)   77.184  (m)                       GP(2002.00)    
 JV6681  ELLIP H (08/30/02)   77.195  (m)                       GP(       ) 4 2
 JV6681  NAD 83(1991)-  39 04 53.39713(N)    077 04 34.55278(W) AD(       ) 1
 JV6681  ELLIP H (01/27/92)   77.113  (m)                       GP(       ) 4 1
 JV6681  NAD 83(1986)-  39 04 53.39617(N)    077 04 34.56326(W) AD(       ) 1
 JV6681  NGVD 29 (03/05/91)  109.3    (m)  OSU 89B  model used  GPS OBS        
 JV6681
 JV6681.Superseded values are not recommended for survey control.
 JV6681
 JV6681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6681.See file dsdata.pdf to determine how the superseded data were derived.
 JV6681
 JV6681_MARKER: DD = SURVEY DISK
 JV6681_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6681_STAMPING: 19862
 JV6681_MARK LOGO: WSSC
 JV6681_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6681_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6681+STABILITY: SURFACE MOTION
 JV6681_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6681+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2010
 JV6681
 JV6681  HISTORY     - Date     Condition        Report By
 JV6681  HISTORY     - 1989     MONUMENTED       WSSC
 JV6681  HISTORY     - 19930331 GOOD             MSI
 JV6681  HISTORY     - 20020829 GOOD             INDIV
 JV6681  HISTORY     - 20030909 GOOD             URS
 JV6681  HISTORY     - 20050405 GOOD             USPSQD
 JV6681  HISTORY     - 20090512 GOOD             JMTMD
 JV6681  HISTORY     - 20100920 GOOD             GPSSS
 JV6681
 JV6681                          STATION DESCRIPTION
 JV6681
 JV6681'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6681'THE STATION IS LOCATED ABOUT 6.1 KM (3.8 MI) EAST OF ROCKVILLE, 3.1 KM
 JV6681'(1.9 MI) SW OF LAYHILL, AND 12.8 KM (8.0 MI) WSW OF BURTONSVILLE TO
 JV6681'REACH THE STATION FROM THE INTERSECTION OF STATE HWYS RTE 97 (GEORGIA
 JV6681'AVE) AND RTE 185 (CONNECTICUT AVE) IN ASPEN HILL GO SE ON RTE 97 0.3
 JV6681'KM (0.2 MI) TO THE STATION ON THE LEFT IN THE GRASS
 JV6681'MEDIAN. OWNERSHIP--COUNTY ROAD RIGHT-OF-WAY THE STATION IS A STANDARD
 JV6681'WSSC BRASS DISK STAMPED 19862 SET IN THE TOP OF A ROUND CONCRETE
 JV6681'MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH IN THE GRASS. IT IS
 JV6681'19.89 M (65.26 FT) SSE OF A REF NAIL IN THE NE SIDE OF A PEPCO POLE
 JV6681'NUMBER 778454-2250, 34.23 M (112.30 FT) SE OF TOP AND CENTER LINE OF
 JV6681'A FIRE HYDRANT, 48.05 M (157.64 FT) SW OF A REF NAIL IN THE SE SIDE
 JV6681'OF A PEPCO POLE NUMBER 778454-2466, AND 36.6 M (120.1 FT) NW OF A REF
 JV6681'NAIL IN THE SW SIDE OF A PEPCO POLE NUMBER 778454-3951. NO REFERENCES
 JV6681'WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR
 JV6681'THIS STATION AT THIS TIME.
 JV6681
 JV6681                          STATION RECOVERY (1993)
 JV6681
 JV6681'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV6681'RECOVERED IN GOOD CONDITION.
 JV6681
 JV6681                          STATION RECOVERY (2002)
 JV6681
 JV6681'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (APC)
 JV6681'STATION IS IN GRASSY MEDIAN OF GEORGIA AVENUE (ROUTE 97) DIRECTLY
 JV6681'OPPOSITE ENTRANCE OF GATE OF HEAVEN CEMETERY.
 JV6681
 JV6681                          STATION RECOVERY (2003)
 JV6681
 JV6681'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 JV6681'RECOVERED IN GOOD CONDITION.
 JV6681
 JV6681                          STATION RECOVERY (2005)
 JV6681
 JV6681'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6681'RECOVERED IN GOOD CONDITION.
 JV6681
 JV6681                          STATION RECOVERY (2009)
 JV6681
 JV6681'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 JV6681'GOOD SITE FOR GPS (X,Y,Z, NOT CHECKED AT THIS TIME)
 JV6681
 JV6681                          STATION RECOVERY (2010)
 JV6681
 JV6681'RECOVERY NOTE BY GPS SALES AND SERVICES 2010
 JV6681'RECOVERED BY TED, TOM AND JOEL OF SURVEY SURVICES OF MD, LLC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6682 ***********************************************************************
 JV6682  DESIGNATION -  19863
 JV6682  PID         -  JV6682
 JV6682  STATE/COUNTY-  MD/MONTGOMERY
 JV6682  COUNTRY     -  US
 JV6682  USGS QUAD   -  GERMANTOWN (2016)
 JV6682
 JV6682                         *CURRENT SURVEY CONTROL
 JV6682  ______________________________________________________________________
 JV6682* NAD 83(2011) POSITION- 39 11 03.88399(N) 077 18 02.97942(W)   ADJUSTED
 JV6682* NAD 83(2011) ELLIP HT-    92.014 (meters)        (06/27/12)   ADJUSTED
 JV6682* NAD 83(2011) EPOCH   -  2010.00
 JV6682* NAVD 88 ORTHO HEIGHT -   124.0   (meters)      407.    (feet) VERTCON3
 JV6682  ______________________________________________________________________
 JV6682  GEOID HEIGHT    -        -31.900 (meters)                     GEOID18
 JV6682  NAD 83(2011) X  -  1,088,276.467 (meters)                     COMP
 JV6682  NAD 83(2011) Y  - -4,829,388.790 (meters)                     COMP
 JV6682  NAD 83(2011) Z  -  4,008,264.856 (meters)                     COMP
 JV6682  LAPLACE CORR    -          3.64  (seconds)                    DEFLEC18
 JV6682
 JV6682  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6682  Standards:
 JV6682         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6682            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6682  -------------------------------------------------------------------
 JV6682  NETWORK    1.86   4.29           0.72   0.73   2.19      0.55310390
 JV6682  -------------------------------------------------------------------
 JV6682  Click here for local accuracies and other accuracy information.
 JV6682
 JV6682.The horizontal coordinates were established by GPS observations
 JV6682.and adjusted by the National Geodetic Survey in June 2012.
 JV6682
 JV6682.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6682.been affixed to the stable North American tectonic plate. See 
 JV6682.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6682
 JV6682.The horizontal coordinates are valid at the epoch date displayed above
 JV6682.which is a decimal equivalence of Year/Month/Day.
 JV6682
 JV6682.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6682.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6682
 JV6682.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6682.GEOID18 height accuracy estimate available here.
 JV6682
 JV6682.Click photographs - Photos may exist for this station.
 JV6682
 JV6682.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6682
 JV6682.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6682
 JV6682.The ellipsoidal height was determined by GPS observations
 JV6682.and is referenced to NAD 83.
 JV6682
 JV6682. The following values were computed from the NAD 83(2011) position.
 JV6682
 JV6682;                    North         East     Units Scale Factor Converg.
 JV6682;SPC MD       -   168,521.096   374,009.141   MT  0.99996432   -0 11 19.7
 JV6682;SPC MD       -   552,889.63  1,227,061.66   sFT  0.99996432   -0 11 19.7
 JV6682;UTM  18      - 4,339,763.106   301,274.620   MT  1.00008628   -1 27 15.1
 JV6682
 JV6682!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6682!SPC MD       -   0.99998556  x   0.99996432  =   0.99994988
 JV6682!UTM  18      -   0.99998556  x   1.00008628  =   1.00007184
 JV6682
 JV6682_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0127439763(NAD 83)
 JV6682
 JV6682                          SUPERSEDED SURVEY CONTROL
 JV6682
 JV6682  NAD 83(2007)-  39 11 03.88415(N)    077 18 02.98028(W) AD(2002.00) 0
 JV6682  ELLIP H (02/10/07)   92.056  (m)                       GP(2002.00)    
 JV6682  ELLIP H (08/30/02)   92.059  (m)                       GP(       ) 4 2
 JV6682  NAD 83(1993)-  39 11 03.88478(N)    077 18 02.98056(W) AD(       ) 1
 JV6682  ELLIP H (11/14/94)   92.007  (m)                       GP(       ) 4 2
 JV6682  NAD 83(1991)-  39 11 03.88368(N)    077 18 02.97962(W) AD(       ) 1
 JV6682  ELLIP H (01/27/92)   91.976  (m)                       GP(       ) 4 1
 JV6682  NAD 83(1986)-  39 11 03.88386(N)    077 18 02.99075(W) AD(       ) 1
 JV6682  NGVD 29 (03/05/91)  124.2    (m)  OSU 89B  model used  GPS OBS        
 JV6682
 JV6682.Superseded values are not recommended for survey control.
 JV6682
 JV6682.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6682.See file dsdata.pdf to determine how the superseded data were derived.
 JV6682
 JV6682_MARKER: DD = SURVEY DISK
 JV6682_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6682_STAMPING: 19863
 JV6682_MARK LOGO: WSSC
 JV6682_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6682_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6682+STABILITY: SURFACE MOTION
 JV6682_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6682+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6682
 JV6682  HISTORY     - Date     Condition        Report By
 JV6682  HISTORY     - 1989     MONUMENTED       WSSC
 JV6682
 JV6682                          STATION DESCRIPTION
 JV6682
 JV6682'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6682'THE STATION IS LOCATED ABOUT 1.2 KM (0.7 MI) NE OF BOYDS, 5.2 KM
 JV6682'(3.2 MI) SW OF BRINK, AND 2.4 KM (1.5 MI) NW OF GERMANTOWN. TO REACH
 JV6682'THE STATION FROM THE BRIDGE ON STATE RTE 118 (DARNESTOWN-GERMANTOWN
 JV6682'RD) OVER INTERSTATE 270 IN GERMANTOWN GO WEST ON RTE 118 1.6 KM
 JV6682'(1.0 MI) TO WISTERIA DRIVE.  TURN RIGHT AND GO NW 2.2 KM (1.4 MI) TO
 JV6682'WANEGARDEN DRIVE TURN LEFT ON TO A DRIVEWAY THAT IS THE ENTRANCE TO
 JV6682'SENECA LAKE DAM.  GO THRU THE GATE AND CONTINUE WNW 1.6 KM (1.0 MI)
 JV6682'THE STATION ON THE LEFT AT THE END OF THE
 JV6682'SPILLWAY. OWNERSHIP--WASHINGTON SUBURBAN SANITARY COMMISSION THE
 JV6682'STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED 19863 SET IN THE
 JV6682'TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH
 JV6682'IN THE GRASS. IT IS 30.7 M (100.7 FT) SE OF THE SOUTH CORNER THE
 JV6682'STONE PUMP HOUSE, 3.35 M (10.99 FT) SOUTH OF A X CUT IN AN I-BEAM,
 JV6682'6.83 M (22.41 FT) WEST OF A X CUT IN A FENCE POST AT THE NORTH END OF
 JV6682'A CHAIN LINK FENCE, 10.38 M (34.06 FT) NW OF A X CUT IN THE WEST
 JV6682'CORNER OF A CONCRETE PLATFORM,AND 8.7 M (28.5 FT) NW OF A X CUT IN
 JV6682'THE EAST CORNER OF A CONCRETE PLATFORM. NO REFERENCES WERE
 JV6682'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 JV6682'STATION AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6683 ***********************************************************************
 JV6683  DESIGNATION -  19864
 JV6683  PID         -  JV6683
 JV6683  STATE/COUNTY-  MD/MONTGOMERY
 JV6683  COUNTRY     -  US
 JV6683  USGS QUAD   -  GAITHERSBURG (2016)
 JV6683
 JV6683                         *CURRENT SURVEY CONTROL
 JV6683  ______________________________________________________________________
 JV6683* NAD 83(2011) POSITION- 39 12 50.88592(N) 077 07 37.96801(W)   ADJUSTED
 JV6683* NAD 83(2011) ELLIP HT-   132.457 (meters)        (06/27/12)   ADJUSTED
 JV6683* NAD 83(2011) EPOCH   -  2010.00
 JV6683* NAVD 88 ORTHO HEIGHT -   164.3   (meters)      539.    (feet) GPS OBS
 JV6683  ______________________________________________________________________
 JV6683  NAVD 88 orthometric height was determined with an earlier geoid model
 JV6683  GEOID HEIGHT    -        -31.773 (meters)                     GEOID18
 JV6683  NAD 83(2011) X  -  1,102,447.520 (meters)                     COMP
 JV6683  NAD 83(2011) Y  - -4,824,066.389 (meters)                     COMP
 JV6683  NAD 83(2011) Z  -  4,010,847.650 (meters)                     COMP
 JV6683  LAPLACE CORR    -         -0.85  (seconds)                    DEFLEC18
 JV6683
 JV6683  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6683  Standards:
 JV6683         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6683            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6683  -------------------------------------------------------------------
 JV6683  NETWORK    2.88   4.21           1.27   1.07   2.15     -0.05376637
 JV6683  -------------------------------------------------------------------
 JV6683  Click here for local accuracies and other accuracy information.
 JV6683
 JV6683.The horizontal coordinates were established by GPS observations
 JV6683.and adjusted by the National Geodetic Survey in June 2012.
 JV6683
 JV6683.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6683.been affixed to the stable North American tectonic plate. See 
 JV6683.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6683
 JV6683.The horizontal coordinates are valid at the epoch date displayed above
 JV6683.which is a decimal equivalence of Year/Month/Day.
 JV6683
 JV6683.The orthometric height was determined by GPS observations and a
 JV6683.high-resolution geoid model.
 JV6683
 JV6683.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6683.GEOID18 height accuracy estimate available here.
 JV6683
 JV6683.Click photographs - Photos may exist for this station.
 JV6683
 JV6683.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6683
 JV6683.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6683
 JV6683.The ellipsoidal height was determined by GPS observations
 JV6683.and is referenced to NAD 83.
 JV6683
 JV6683. The following values were computed from the NAD 83(2011) position.
 JV6683
 JV6683;                    North         East     Units Scale Factor Converg.
 JV6683;SPC MD       -   171,785.613   389,013.623   MT  0.99996724   -0 04 47.4
 JV6683;SPC MD       -   563,599.97  1,276,288.86   sFT  0.99996724   -0 04 47.4
 JV6683;UTM  18      - 4,342,695.723   316,348.810   MT  1.00001530   -1 20 42.9
 JV6683
 JV6683!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6683!SPC MD       -   0.99997922  x   0.99996724  =   0.99994646
 JV6683!UTM  18      -   0.99997922  x   1.00001530  =   0.99999452
 JV6683
 JV6683_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1634842695(NAD 83)
 JV6683
 JV6683                          SUPERSEDED SURVEY CONTROL
 JV6683
 JV6683  NAD 83(2007)-  39 12 50.88589(N)    077 07 37.96957(W) AD(2002.00) 0
 JV6683  ELLIP H (02/10/07)  132.505  (m)                       GP(2002.00)    
 JV6683  ELLIP H (08/30/02)  132.529  (m)                       GP(       ) 4 2
 JV6683  ELLIP H (04/01/98)  132.481  (m)                       GP(       ) 4 1
 JV6683  NAD 83(1993)-  39 12 50.88632(N)    077 07 37.96957(W) AD(       ) 1
 JV6683  ELLIP H (11/14/94)  132.462  (m)                       GP(       ) 4 2
 JV6683  NAD 83(1991)-  39 12 50.88530(N)    077 07 37.96936(W) AD(       ) 1
 JV6683  ELLIP H (01/27/92)  132.437  (m)                       GP(       ) 4 1
 JV6683  NAD 83(1986)-  39 12 50.88525(N)    077 07 37.97968(W) AD(       ) 1
 JV6683  NGVD 29 (03/05/91)  164.5    (m)  OSU 89B  model used  GPS OBS        
 JV6683
 JV6683.Superseded values are not recommended for survey control.
 JV6683
 JV6683.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6683.See file dsdata.pdf to determine how the superseded data were derived.
 JV6683
 JV6683_MARKER: DD = SURVEY DISK
 JV6683_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6683_STAMPING: 19864
 JV6683_MARK LOGO: WSSC
 JV6683_PROJECTION: FLUSH
 JV6683_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6683_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6683+STABILITY: SURFACE MOTION
 JV6683_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6683+SATELLITE: SATELLITE OBSERVATIONS - September 11, 2013
 JV6683
 JV6683  HISTORY     - Date     Condition        Report By
 JV6683  HISTORY     - 1989     MONUMENTED       WSSC
 JV6683  HISTORY     - 19940401 GOOD             MSI
 JV6683  HISTORY     - 20030821 GOOD             GEOCAC
 JV6683  HISTORY     - 20050405 GOOD             USPSQD
 JV6683  HISTORY     - 20130911 GOOD             BASE9
 JV6683
 JV6683                          STATION DESCRIPTION
 JV6683
 JV6683'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6683'THE STATION IS LOCATED ABOUT 8.5 KM (5.3 MI) NE OF GAITHERSBURG, 4.0
 JV6683'KM (2.5 MI) EAST OF GOSHEN, AND 5.6 KM (3.5 MI) WEST OF SUNSHINE. TO
 JV6683'REACH THE STATION FROM THE FIRE HOUSE IN LAYTONSVILLE GO NORTH ALONG
 JV6683'STATE RTE 108 (OLNEY-LAYTONSVILLE RD) 0.6 KM (0.4 MI) TO SUNDOWN
 JV6683'ROAD, TURN RIGHT AND GO EAST 1.4 KM (0.9 MI) TO THE STATION ON THE
 JV6683'RIGHT.  THE STATION IS LOCATED IN FRONT OF SUNDOWN
 JV6683'PARK. OWNERSHIP--MARYLAND NATIONAL CAPITOL PARK AND PLANNING
 JV6683'COMMISSION. THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 JV6683'19864 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 JV6683'DIAMETER SET FLUSH IN THE GRASS. IT IS 17.52 M (57.48 FT) EAST OF A
 JV6683'REF NAIL IN THE NORTH SIDE OF A TELEPHONE POLE NO NUMBER, 57.89 M
 JV6683'(189.93 FT) WEST OF A REF NAIL IN THE SOUTH SIDE OF A C AND P POLE
 JV6683'NUMBER M2097, 42.84 M (140.55 FT) SW OF A REF NAIL IN THE SOUTH SIDE
 JV6683'OF A PEPCO POLE NUMBER 736502-9791, AND 24.99 M (81.99 FT) SE OF A
 JV6683'REF NAIL IN THE NE SIDE OF A PEPCO POLE NUMBER 763502-8087. NO
 JV6683'REFERENCES WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS
 JV6683'AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 JV6683
 JV6683                          STATION RECOVERY (1994)
 JV6683
 JV6683'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 JV6683'RECOVERED AS DESCRIBED BY MEASUREMENT SCIENCE, INC. (1994).
 JV6683
 JV6683                          STATION RECOVERY (2003)
 JV6683
 JV6683'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV6683'STATION IS LOCATED APPROXIMATELY 15 FEET SOUTH OF THE EDGE OF PAVEMENT
 JV6683'AND APPROXIMATELY 17 FEET NORTH OF THE NORTHERNMOST OF THE TWO WOOD
 JV6683'POSTS SUPPORTING THE SUNDOWN PARK ROAD SIGN.
 JV6683
 JV6683                          STATION RECOVERY (2005)
 JV6683
 JV6683'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6683'RECOVERED IN GOOD CONDITION.
 JV6683
 JV6683                          STATION RECOVERY (2013)
 JV6683
 JV6683'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV6683'THE MARK IS 4.63 M (15.2 FT) SOUTH OF THE EDGE OF THE PAVEMENT AND
 JV6683'5.04 M (16.5 FT) NORTH OF THE NORTHERN MOST OF THE TWO PARK SIGN
 JV6683'SUPPORT POSTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6684 ***********************************************************************
 JV6684  DESIGNATION -  19865
 JV6684  PID         -  JV6684
 JV6684  STATE/COUNTY-  MD/MONTGOMERY
 JV6684  COUNTRY     -  US
 JV6684  USGS QUAD   -  GERMANTOWN (2016)
 JV6684
 JV6684                         *CURRENT SURVEY CONTROL
 JV6684  ______________________________________________________________________
 JV6684* NAD 83(2011) POSITION- 39 09 01.89109(N) 077 21 42.66200(W)   ADJUSTED
 JV6684* NAD 83(2011) ELLIP HT-    80.699 (meters)        (06/27/12)   ADJUSTED
 JV6684* NAD 83(2011) EPOCH   -  2010.00
 JV6684* NAVD 88 ORTHO HEIGHT -   112.7   (meters)      370.    (feet) GPS OBS
 JV6684  ______________________________________________________________________
 JV6684  NAVD 88 orthometric height was determined with an earlier geoid model
 JV6684  GEOID HEIGHT    -        -31.993 (meters)                     GEOID18
 JV6684  NAD 83(2011) X  -  1,083,650.264 (meters)                     COMP
 JV6684  NAD 83(2011) Y  - -4,832,855.112 (meters)                     COMP
 JV6684  NAD 83(2011) Z  -  4,005,340.917 (meters)                     COMP
 JV6684  LAPLACE CORR    -          4.29  (seconds)                    DEFLEC18
 JV6684
 JV6684  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6684  Standards:
 JV6684         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6684            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6684  -------------------------------------------------------------------
 JV6684  NETWORK    2.43   3.29           1.06   0.92   1.68      0.04330303
 JV6684  -------------------------------------------------------------------
 JV6684  Click here for local accuracies and other accuracy information.
 JV6684
 JV6684.The horizontal coordinates were established by GPS observations
 JV6684.and adjusted by the National Geodetic Survey in June 2012.
 JV6684
 JV6684.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6684.been affixed to the stable North American tectonic plate. See 
 JV6684.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6684
 JV6684.The horizontal coordinates are valid at the epoch date displayed above
 JV6684.which is a decimal equivalence of Year/Month/Day.
 JV6684
 JV6684.The orthometric height was determined by GPS observations and a
 JV6684.high-resolution geoid model.
 JV6684
 JV6684.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6684.GEOID18 height accuracy estimate available here.
 JV6684
 JV6684.Click photographs - Photos may exist for this station.
 JV6684
 JV6684.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6684
 JV6684.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6684
 JV6684.The ellipsoidal height was determined by GPS observations
 JV6684.and is referenced to NAD 83.
 JV6684
 JV6684. The following values were computed from the NAD 83(2011) position.
 JV6684
 JV6684;                    North         East     Units Scale Factor Converg.
 JV6684;SPC MD       -   164,778.321   368,722.004   MT  0.99996131   -0 13 37.6
 JV6684;SPC MD       -   540,610.21  1,209,715.44   sFT  0.99996131   -0 13 37.6
 JV6684;UTM  18      - 4,336,137.468   295,905.411   MT  1.00011292   -1 29 30.1
 JV6684
 JV6684!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6684!SPC MD       -   0.99998734  x   0.99996131  =   0.99994865
 JV6684!UTM  18      -   0.99998734  x   1.00011292  =   1.00010026
 JV6684
 JV6684_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9590536137(NAD 83)
 JV6684
 JV6684                          SUPERSEDED SURVEY CONTROL
 JV6684
 JV6684  NAD 83(2007)-  39 09 01.89142(N)    077 21 42.66167(W) AD(2002.00) 0
 JV6684  ELLIP H (02/10/07)   80.744  (m)                       GP(2002.00)    
 JV6684  ELLIP H (08/30/02)   80.710  (m)                       GP(       ) 4 2
 JV6684  NAD 83(1993)-  39 09 01.89198(N)    077 21 42.66161(W) AD(       ) 1
 JV6684  ELLIP H (11/14/94)   80.641  (m)                       GP(       ) 4 2
 JV6684  NAD 83(1991)-  39 09 01.89118(N)    077 21 42.66079(W) AD(       ) 1
 JV6684  ELLIP H (01/27/92)   80.646  (m)                       GP(       ) 4 1
 JV6684  NAD 83(1986)-  39 09 01.89129(N)    077 21 42.67189(W) AD(       ) 1
 JV6684  NGVD 29 (03/05/91)  112.9    (m)  OSU 89B  model used  GPS OBS        
 JV6684
 JV6684.Superseded values are not recommended for survey control.
 JV6684
 JV6684.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6684.See file dsdata.pdf to determine how the superseded data were derived.
 JV6684
 JV6684_MARKER: DD = SURVEY DISK
 JV6684_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6684_STAMPING: 19865
 JV6684_MARK LOGO: WSSC
 JV6684_PROJECTION: FLUSH
 JV6684_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6684_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6684+STABILITY: SURFACE MOTION
 JV6684_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6684+SATELLITE: SATELLITE OBSERVATIONS - November 04, 2014
 JV6684
 JV6684  HISTORY     - Date     Condition        Report By
 JV6684  HISTORY     - 1989     MONUMENTED       WSSC
 JV6684  HISTORY     - 19940401 GOOD             MSI
 JV6684  HISTORY     - 20141104 GOOD             BASE9
 JV6684
 JV6684                          STATION DESCRIPTION
 JV6684
 JV6684'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6684'THE STATION IS LOCATED ABOUT 2.9 KM (1.8 MI) NW OF DAWSONVILLE, 3.2 KM
 JV6684'(2.0 MI) NE OF POOLESVILLE, AND 4.8 KM (3.0 MI) SE OF BEALLSVILLE. TO
 JV6684'REACH THE STATION FROM THE INTERSECTION OF STATE ROADS RTE 28
 JV6684'(DARNESTOWN RD) AND RTE 117 (BUCKLODGE RD) IN LEES CORNER GO NW 30 M
 JV6684'(98.4 FT) TO STATION ON THE RIGHT, 1.0 M (3.3 FT) SW OF WOOD
 JV6684'FENCE. OWNERSHIP--STATE ROAD RIGHT-OF-WAY THE STATION MARK IS A
 JV6684'STANDARD WSSC BRASS DISK STAMPED 19865 SET IN THE TOP OF A ROUND
 JV6684'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH IN THE
 JV6684'GRASS. IT IS 34.51 M (113.22 FT) SSE OF A REF NAIL IN THE EAST SIDE
 JV6684'OF A C AND P POLE NUMBER 468, 19.28 M (63.25 FT) NORTH OF A REF NAIL
 JV6684'IN THE WEST SIDE OF A C AND P POLE NUMBER 467, 28.14 M (92.32 FT)
 JV6684'WEST OF A REF NAIL IN THE SOUTH SIDE OF A 1.0 M (3.3 FT) SYCAMORE
 JV6684'TREE, AND 33.58 M (110.17 FT) NW OF A REF NAIL IN THE SOUTH SIDE OF A
 JV6684'C AND P POLE WITH NO NUMBER. NO REFERENCES MARKS WERE ESTABLISHED AT
 JV6684'THIS TIME NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS
 JV6684'TIME.
 JV6684
 JV6684                          STATION RECOVERY (1994)
 JV6684
 JV6684'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 JV6684'RECOVERED AS DESCRIBED BY MEASUREMENT SCIENCE, INC. (1994).
 JV6684
 JV6684                          STATION RECOVERY (2014)
 JV6684
 JV6684'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 JV6684'THE MARK IS 0.99 M (3.2 FT) WEST OF A WASHINGTON SUBURBAN SANITARY
 JV6684'COMMISSION WITNESS POST, 9.50 M (31.2 FT) SOUTH OF A HIGHWAY SIGN POST
 JV6684'FOR WEST MARYLAND 28 AND SNOW EMERGENCY ROUTE AND 3.10 M (10.2 FT)
 JV6684'EAST OF THE WEST FACE OF THE CURB ALONG BUCKLODGE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6685 ***********************************************************************
 JV6685  DESIGNATION -  19866
 JV6685  PID         -  JV6685
 JV6685  STATE/COUNTY-  MD/MONTGOMERY
 JV6685  COUNTRY     -  US
 JV6685  USGS QUAD   -  KENSINGTON (2016)
 JV6685
 JV6685                         *CURRENT SURVEY CONTROL
 JV6685  ______________________________________________________________________
 JV6685* NAD 83(2011) POSITION- 39 01 49.29043(N) 077 06 20.60066(W)   ADJUSTED
 JV6685* NAD 83(2011) ELLIP HT-    62.145 (meters)        (06/27/12)   ADJUSTED
 JV6685* NAD 83(2011) EPOCH   -  2010.00
 JV6685* NAVD 88 ORTHO HEIGHT -    94.0   (meters)      308.    (feet) GPS OBS
 JV6685  ______________________________________________________________________
 JV6685  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6685  GEOID HEIGHT    -        -32.190 (meters)                     GEOID93
 JV6685  GEOID HEIGHT    -        -31.821 (meters)                     GEOID18
 JV6685  NAD 83(2011) X  -  1,107,117.514 (meters)                     COMP
 JV6685  NAD 83(2011) Y  - -4,836,148.415 (meters)                     COMP
 JV6685  NAD 83(2011) Z  -  3,994,974.785 (meters)                     COMP
 JV6685  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 JV6685
 JV6685  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6685  Standards:
 JV6685         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6685            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6685  -------------------------------------------------------------------
 JV6685  NETWORK    0.93   1.92           0.38   0.38   0.98      0.11356406
 JV6685  -------------------------------------------------------------------
 JV6685  Click here for local accuracies and other accuracy information.
 JV6685
 JV6685.The horizontal coordinates were established by GPS observations
 JV6685.and adjusted by the National Geodetic Survey in June 2012.
 JV6685
 JV6685.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6685.been affixed to the stable North American tectonic plate. See 
 JV6685.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6685
 JV6685.The horizontal coordinates are valid at the epoch date displayed above
 JV6685.which is a decimal equivalence of Year/Month/Day.
 JV6685
 JV6685.The orthometric height was determined by GPS observations and a
 JV6685.high-resolution geoid model.
 JV6685
 JV6685.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6685.GEOID18 height accuracy estimate available here.
 JV6685
 JV6685.Click photographs - Photos may exist for this station.
 JV6685
 JV6685.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6685
 JV6685.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6685
 JV6685.The ellipsoidal height was determined by GPS observations
 JV6685.and is referenced to NAD 83.
 JV6685
 JV6685. The following values were computed from the NAD 83(2011) position.
 JV6685
 JV6685;                    North         East     Units Scale Factor Converg.
 JV6685;SPC MD       -   151,381.617   390,845.991   MT  0.99995347   -0 03 58.9
 JV6685;SPC MD       -   496,657.86  1,282,300.56   sFT  0.99995347   -0 03 58.9
 JV6685;SPC VA N     - 2,152,288.162 3,620,721.879   MT  0.99997429   +0 52 12.7
 JV6685;SPC VA N     - 7,061,298.74 11,878,985.03   sFT  0.99997429   +0 52 12.7
 JV6685;UTM  18      - 4,322,255.225   317,731.167   MT  1.00000909   -1 19 35.1
 JV6685
 JV6685!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6685!SPC MD       -   0.99999025  x   0.99995347  =   0.99994372
 JV6685!SPC VA N     -   0.99999025  x   0.99997429  =   0.99996454
 JV6685!UTM  18      -   0.99999025  x   1.00000909  =   0.99999934
 JV6685
 JV6685_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1773122255(NAD 83)
 JV6685
 JV6685                          SUPERSEDED SURVEY CONTROL
 JV6685
 JV6685  NAD 83(2007)-  39 01 49.29068(N)    077 06 20.60144(W) AD(2002.00) 0
 JV6685  ELLIP H (02/10/07)   62.176  (m)                       GP(2002.00)    
 JV6685  ELLIP H (08/30/02)   62.182  (m)                       GP(       ) 4 2
 JV6685  NAD 83(1991)-  39 01 49.29043(N)    077 06 20.60191(W) AD(       ) 1
 JV6685  ELLIP H (01/27/92)   62.101  (m)                       GP(       ) 4 1
 JV6685  NAD 83(1986)-  39 01 49.28969(N)    077 06 20.61208(W) AD(       ) 1
 JV6685  NGVD 29 (03/05/91)   94.2    (m)  OSU 89B  model used  GPS OBS        
 JV6685
 JV6685.Superseded values are not recommended for survey control.
 JV6685
 JV6685.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6685.See file dsdata.pdf to determine how the superseded data were derived.
 JV6685
 JV6685_MARKER: DD = SURVEY DISK
 JV6685_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6685_STAMPING: 19866
 JV6685_MARK LOGO: WSSC
 JV6685_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6685_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6685+STABILITY: SURFACE MOTION
 JV6685_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6685+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV6685
 JV6685  HISTORY     - Date     Condition        Report By
 JV6685  HISTORY     - 1989     MONUMENTED       WSSC
 JV6685  HISTORY     - 19930331 GOOD             MSI
 JV6685  HISTORY     - 20021203 GOOD             POWELL
 JV6685  HISTORY     - 20050405 GOOD             USPSQD
 JV6685
 JV6685                          STATION DESCRIPTION
 JV6685
 JV6685'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6685'THE STATION IS LOCATED ABOUT 1.6 KM (1.0 MI) SW OF GARRETT PARK, 3.5
 JV6685'KM (2.2 MI) SE OF ROCKVILLE, AND 8.9 KM (5.5 MI) NE OF POTOMAC. TO
 JV6685'REACH THE STATION FROM THE INTERSECTION OF STATE ROADS RTE 355
 JV6685'(ROCKVILLE PIKE) AND RTE 547 (STRATHMORE AVE) IN GARRETT PARK, GO
 JV6685'SOUTH ON RTE 355 0.5 KM (0.3 MI) TO TUCKERMAN LANE.  TURN RIGHT AND
 JV6685'GO SW 60 M (196.8 FT) TO THE STATION ON THE LEFT.  STATION IS BETWEEN
 JV6685'THE CURB AND THE CONCRETE SIDEWALK. OWERSHIP--COUNTY ROAD
 JV6685'RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 JV6685'19866 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 JV6685'DIAMETER AND RECESSED 0.03 M (0.10 FT) IN THE GRASS. IT IS 12.6 M
 JV6685'(41.3 FT) EAST OF THE FACE OF A LIGHT POLE, 27.69 M (90.85 FT) WEST
 JV6685'OF THE FACE OF A LIGHT POLE, AND 34.76 M (114.04 FT) SE OF A REF NAIL
 JV6685'IN THE NE SIDE OF A PEPCO POLE NUMBER 769435-7897. NO REFERENCES WERE
 JV6685'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 JV6685'STATION AT THIS TIME.
 JV6685
 JV6685                          STATION RECOVERY (1993)
 JV6685
 JV6685'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV6685'RECOVERED IN GOOD CONDITION.
 JV6685
 JV6685                          STATION RECOVERY (2002)
 JV6685
 JV6685'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV6685'RECOVERED IN GOOD CONDITION.
 JV6685
 JV6685                          STATION RECOVERY (2005)
 JV6685
 JV6685'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6685'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA8316 ***********************************************************************
 AA8316  DESIGNATION -  19892
 AA8316  PID         -  AA8316
 AA8316  STATE/COUNTY-  MD/MONTGOMERY
 AA8316  COUNTRY     -  US
 AA8316  USGS QUAD   -  WASHINGTON WEST (2016)
 AA8316
 AA8316                         *CURRENT SURVEY CONTROL
 AA8316  ______________________________________________________________________
 AA8316* NAD 83(2011) POSITION- 38 58 21.60313(N) 077 05 22.43864(W)   ADJUSTED
 AA8316* NAD 83(2011) ELLIP HT-    74.204 (meters)        (06/27/12)   ADJUSTED
 AA8316* NAD 83(2011) EPOCH   -  2010.00
 AA8316* NAVD 88 ORTHO HEIGHT -   106.1   (meters)      348.    (feet) GPS OBS
 AA8316  ______________________________________________________________________
 AA8316  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA8316  GEOID HEIGHT    -        -32.263 (meters)                     GEOID93
 AA8316  GEOID HEIGHT    -        -31.897 (meters)                     GEOID18
 AA8316  NAD 83(2011) X  -  1,109,383.821 (meters)                     COMP
 AA8316  NAD 83(2011) Y  - -4,839,773.992 (meters)                     COMP
 AA8316  NAD 83(2011) Z  -  3,990,005.129 (meters)                     COMP
 AA8316  LAPLACE CORR    -         -2.64  (seconds)                    DEFLEC18
 AA8316
 AA8316  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA8316  Standards:
 AA8316         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA8316            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA8316  -------------------------------------------------------------------
 AA8316  NETWORK    2.19   3.94           0.95   0.83   2.01      0.05877287
 AA8316  -------------------------------------------------------------------
 AA8316  Click here for local accuracies and other accuracy information.
 AA8316
 AA8316.The horizontal coordinates were established by GPS observations
 AA8316.and adjusted by the National Geodetic Survey in June 2012.
 AA8316
 AA8316.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA8316.been affixed to the stable North American tectonic plate. See 
 AA8316.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA8316
 AA8316.The horizontal coordinates are valid at the epoch date displayed above
 AA8316.which is a decimal equivalence of Year/Month/Day.
 AA8316
 AA8316.The orthometric height was determined by GPS observations and a
 AA8316.high-resolution geoid model.
 AA8316
 AA8316.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA8316.GEOID18 height accuracy estimate available here.
 AA8316
 AA8316.Click photographs - Photos may exist for this station.
 AA8316
 AA8316.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA8316
 AA8316.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA8316
 AA8316.The ellipsoidal height was determined by GPS observations
 AA8316.and is referenced to NAD 83.
 AA8316
 AA8316. The following values were computed from the NAD 83(2011) position.
 AA8316
 AA8316;                    North         East     Units Scale Factor Converg.
 AA8316;SPC MD       -   144,975.843   392,238.590   MT  0.99995127   -0 03 22.4
 AA8316;SPC MD       -   475,641.58  1,286,869.44   sFT  0.99995127   -0 03 22.4
 AA8316;UTM  18      - 4,315,820.047   318,982.726   MT  1.00000349   -1 18 52.5
 AA8316
 AA8316!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA8316!SPC MD       -   0.99998836  x   0.99995127  =   0.99993963
 AA8316!UTM  18      -   0.99998836  x   1.00000349  =   0.99999185
 AA8316
 AA8316_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1898215820(NAD 83)
 AA8316
 AA8316                          SUPERSEDED SURVEY CONTROL
 AA8316
 AA8316  NAD 83(2007)-  38 58 21.60333(N)    077 05 22.43937(W) AD(2002.00) 0
 AA8316  ELLIP H (02/10/07)   74.234  (m)                       GP(2002.00)    
 AA8316  ELLIP H (08/30/02)   74.254  (m)                       GP(       ) 4 2
 AA8316  NAD 83(1991)-  38 58 21.60322(N)    077 05 22.43989(W) AD(       ) 1
 AA8316  ELLIP H (09/29/95)   74.177  (m)                       GP(       ) 4 2
 AA8316
 AA8316.Superseded values are not recommended for survey control.
 AA8316
 AA8316.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA8316.See file dsdata.pdf to determine how the superseded data were derived.
 AA8316
 AA8316_MARKER: DD = SURVEY DISK
 AA8316_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA8316_STAMPING: 19892
 AA8316_MARK LOGO: WSSC
 AA8316_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AA8316_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA8316+STABILITY: SURFACE MOTION
 AA8316_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA8316+SATELLITE: SATELLITE OBSERVATIONS - 1994
 AA8316
 AA8316  HISTORY     - Date     Condition        Report By
 AA8316  HISTORY     - 1994     MONUMENTED       WSSC
 AA8316  HISTORY     - 20020311 MARK NOT FOUND   USPSQD
 AA8316  HISTORY     - 20030724 GOOD             GEOCAC
 AA8316
 AA8316                          STATION DESCRIPTION
 AA8316
 AA8316'DESCRIBED BY WASH SUBURB SAN COMM 1994 (AD)
 AA8316'TO REACH THE STATION FROM THE INTERSECTION OF I-495 AND RIVER ROAD
 AA8316'(EXIT-39), PROCEED EASTERLY ON RIVER ROAD FOR 2.2 MI (3.5 KM) TO THE
 AA8316'INTERSECTION WITH GOLDSBORO ROAD. TURN LEFT AND PROCEED NORTHERLY ON
 AA8316'GOLDSBORO ROAD FOR 0.8 MI (1.3 KM) TO THE INTERSECTION WITH BRADLEY
 AA8316'BLVD. TURN RIGHT AND PROCEED EASTERLY ON BRADLEY BLVD FOR 0.8 MI (1.3
 AA8316'KM) TO THE INTERSECTION WITH WISCONSIN AVENUE. TURN RIGHT AND PROCEED
 AA8316'SOUTHERLY ON WISCONSIN AVENUE FOR 0.3 MI (0.5 KM) TO THE INTERSECTION
 AA8316'WITH MORGAN DRIVE ON THE RIGHT AND THE STATION ON THE LEFT AT THE
 AA8316'NORTHERN END OF THE GRASS MEDIAN.
 AA8316'
 AA8316'THE STATION IS LOCATED 5.25 FT (1.60 M) EAST OF BACK OF CURB OF
 AA8316'EASTERN EDGE OF SOUTHBOUND LANE, 8.8 FT (2.7 M) WEST OF BACK OF CURB
 AA8316'OF WESTERN EDGE OF NORTH BOUND LANE, AND 3.2 FT (1.0 M) NORTH OF A
 AA8316'WHITE CARSONITE WITNESS POST.
 AA8316
 AA8316                          STATION RECOVERY (2002)
 AA8316
 AA8316'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 AA8316'MARK NOT FOUND.
 AA8316
 AA8316                          STATION RECOVERY (2003)
 AA8316
 AA8316'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 AA8316'WITNESS POST MENTIONED IN 1994 DESCRIPTION WAS NOT FOUND. STATION IS
 AA8316'APPROXIMATELY 6 FEET NORTH OF THE CONTINUATION OF THE CENTERLINE OF
 AA8316'THE WALKWAY LEADING TO THE RESIDENCE AT 6312 WISCONSIN AVENUE. THE
 AA8316'DISK IS ALSO ABOUT 3 FEET NORTH OF A TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6686 ***********************************************************************
 JV6686  DESIGNATION -  19922
 JV6686  PID         -  JV6686
 JV6686  STATE/COUNTY-  MD/MONTGOMERY
 JV6686  COUNTRY     -  US
 JV6686  USGS QUAD   -  ROCKVILLE (2016)
 JV6686
 JV6686                         *CURRENT SURVEY CONTROL
 JV6686  ______________________________________________________________________
 JV6686* NAD 83(2011) POSITION- 39 06 09.72317(N) 077 09 19.02702(W)   ADJUSTED
 JV6686* NAD 83(2011) ELLIP HT-   109.141 (meters)        (06/27/12)   ADJUSTED
 JV6686* NAD 83(2011) EPOCH   -  2010.00
 JV6686* NAVD 88 ORTHO HEIGHT -   140.9   (meters)      462.    (feet) VERTCON3
 JV6686  ______________________________________________________________________
 JV6686  GEOID HEIGHT    -        -31.721 (meters)                     GEOID18
 JV6686  NAD 83(2011) X  -  1,101,816.548 (meters)                     COMP
 JV6686  NAD 83(2011) Y  - -4,832,205.012 (meters)                     COMP
 JV6686  NAD 83(2011) Z  -  4,001,240.044 (meters)                     COMP
 JV6686  LAPLACE CORR    -         -1.39  (seconds)                    DEFLEC18
 JV6686
 JV6686  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6686  Standards:
 JV6686         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6686            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6686  -------------------------------------------------------------------
 JV6686  NETWORK    1.50   3.45           0.57   0.62   1.76      0.42901811
 JV6686  -------------------------------------------------------------------
 JV6686  Click here for local accuracies and other accuracy information.
 JV6686
 JV6686.The horizontal coordinates were established by GPS observations
 JV6686.and adjusted by the National Geodetic Survey in June 2012.
 JV6686
 JV6686.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6686.been affixed to the stable North American tectonic plate. See 
 JV6686.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6686
 JV6686.The horizontal coordinates are valid at the epoch date displayed above
 JV6686.which is a decimal equivalence of Year/Month/Day.
 JV6686
 JV6686.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6686.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6686
 JV6686.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6686.GEOID18 height accuracy estimate available here.
 JV6686
 JV6686.Click photographs - Photos may exist for this station.
 JV6686
 JV6686.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6686
 JV6686.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6686
 JV6686.The ellipsoidal height was determined by GPS observations
 JV6686.and is referenced to NAD 83.
 JV6686
 JV6686. The following values were computed from the NAD 83(2011) position.
 JV6686
 JV6686;                    North         East     Units Scale Factor Converg.
 JV6686;SPC MD       -   159,418.603   386,568.237   MT  0.99995767   -0 05 50.9
 JV6686;SPC MD       -   523,025.87  1,268,265.96   sFT  0.99995767   -0 05 50.9
 JV6686;UTM  18      - 4,330,384.928   313,631.083   MT  1.00002769   -1 21 35.1
 JV6686
 JV6686!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6686!SPC MD       -   0.99998288  x   0.99995767  =   0.99994055
 JV6686!UTM  18      -   0.99998288  x   1.00002769  =   1.00001057
 JV6686
 JV6686_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1363130384(NAD 83)
 JV6686
 JV6686                          SUPERSEDED SURVEY CONTROL
 JV6686
 JV6686  NAD 83(2007)-  39 06 09.72341(N)    077 09 19.02780(W) AD(2002.00) 0
 JV6686  ELLIP H (02/10/07)  109.173  (m)                       GP(2002.00)    
 JV6686  ELLIP H (08/30/02)  109.179  (m)                       GP(       ) 4 2
 JV6686  NAD 83(1991)-  39 06 09.72309(N)    077 09 19.02829(W) AD(       ) 1
 JV6686  ELLIP H (01/27/92)  109.092  (m)                       GP(       ) 4 1
 JV6686  NAD 83(1986)-  39 06 09.72259(N)    077 09 19.03851(W) AD(       ) 1
 JV6686  NGVD 29 (03/05/91)  141.1    (m)  OSU 89B  model used  GPS OBS        
 JV6686
 JV6686.Superseded values are not recommended for survey control.
 JV6686
 JV6686.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6686.See file dsdata.pdf to determine how the superseded data were derived.
 JV6686
 JV6686_MARKER: DD = SURVEY DISK
 JV6686_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6686_SP_SET: CONCRETE SIDEWALK
 JV6686_STAMPING: 19922
 JV6686_MARK LOGO: WSSC
 JV6686_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6686_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6686_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6686+SATELLITE: SATELLITE OBSERVATIONS - June 17, 2014
 JV6686
 JV6686  HISTORY     - Date     Condition        Report By
 JV6686  HISTORY     - 1989     MONUMENTED       WSSC
 JV6686  HISTORY     - 19961210 GOOD             DMW
 JV6686  HISTORY     - 20030908 GOOD             URS
 JV6686  HISTORY     - 20050405 GOOD             USPSQD
 JV6686  HISTORY     - 20081230 GOOD             NGS
 JV6686  HISTORY     - 20140617 GOOD             RKK
 JV6686
 JV6686                          STATION DESCRIPTION
 JV6686
 JV6686'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6686'THE STATION IS LOCATED ABOUT 2.2 KM (1.4 MI) NORTH OF ROCKVILLE, 5.2
 JV6686'KM (3.2 MI) SE OF GAITHERSBURG, AND 4.5 KM (2.8 MI) SSE OF WASHINGTON
 JV6686'GROVE. TO REACH THE STATION FROM THE UNDERPASS OF MD RTE 355 UNDER
 JV6686'INTERSTATE 370 IN SHADY GROVE, GO SE ON RTE 355 (ROCKVILLE PIKE) 3.2
 JV6686'KM (2.0 MI) TO THE STATION ON THE LEFT.  THE STATION IS IN A CONCRETE
 JV6686'SIDEWALK 1.2 M (3.9 FT) WEST OF A CONCRETE WALL. OWNERSHIP--STATE
 JV6686'ROAD RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK
 JV6686'STAMPED 19922 SET IN THE CONCRETE SIDEWALK. IT IS 15.39 M (50.49 FT)
 JV6686'NORTH OF THE CENTER LINE OF A TELEPHONE MANHOLE, 29.08 M (95.41 FT)
 JV6686'ENE OF A REF NAIL IN THE SOUTH SIDE OF A POWERLINE POLE NO NUMBER, AND
 JV6686'49.46 M (162.27 FT) SOUTH OF A REF NAIL IN THE EAST SIDE OF A
 JV6686'POWERLINE POLE NO NUMBER. NO REFERENCES WERE ESTABLISHED AT THIS
 JV6686'TIME NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS
 JV6686'TIME.
 JV6686
 JV6686                          STATION RECOVERY (1996)
 JV6686
 JV6686'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1996 (DMM)
 JV6686'RECOVERED AS DESCRIBED.
 JV6686
 JV6686                          STATION RECOVERY (2003)
 JV6686
 JV6686'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 JV6686'RECOVERED IN GOOD CONDITION.
 JV6686
 JV6686                          STATION RECOVERY (2005)
 JV6686
 JV6686'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6686'RECOVERED IN GOOD CONDITION.
 JV6686
 JV6686                          STATION RECOVERY (2008)
 JV6686
 JV6686'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV6686'RECOVERED IN GOOD CONDITION.
 JV6686
 JV6686                          STATION RECOVERY (2014)
 JV6686
 JV6686'RECOVERY NOTE BY RK&K 2014 (MC)
 JV6686'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8955 ***********************************************************************
 HV8955  DESIGNATION -  19944
 HV8955  PID         -  HV8955
 HV8955  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8955  COUNTRY     -  US
 HV8955  USGS QUAD   -  ANACOSTIA (2016)
 HV8955
 HV8955                         *CURRENT SURVEY CONTROL
 HV8955  ______________________________________________________________________
 HV8955* NAD 83(2011) POSITION- 38 52 09.97967(N) 076 55 53.30401(W)   ADJUSTED
 HV8955* NAD 83(2011) ELLIP HT-    41.755 (meters)        (06/27/12)   ADJUSTED
 HV8955* NAD 83(2011) EPOCH   -  2010.00
 HV8955* NAVD 88 ORTHO HEIGHT -    74.1   (meters)      243.    (feet) VERTCON3
 HV8955  ______________________________________________________________________
 HV8955  GEOID HEIGHT    -        -32.308 (meters)                     GEOID18
 HV8955  NAD 83(2011) X  -  1,124,355.950 (meters)                     COMP
 HV8955  NAD 83(2011) Y  - -4,843,683.144 (meters)                     COMP
 HV8955  NAD 83(2011) Z  -  3,981,068.771 (meters)                     COMP
 HV8955  LAPLACE CORR    -         -4.47  (seconds)                    DEFLEC18
 HV8955
 HV8955  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8955  Standards:
 HV8955         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8955            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8955  -------------------------------------------------------------------
 HV8955  NETWORK    1.13   2.14           0.48   0.44   1.09      0.19078230
 HV8955  -------------------------------------------------------------------
 HV8955  Click here for local accuracies and other accuracy information.
 HV8955
 HV8955.The horizontal coordinates were established by GPS observations
 HV8955.and adjusted by the National Geodetic Survey in June 2012.
 HV8955
 HV8955.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8955.been affixed to the stable North American tectonic plate. See 
 HV8955.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8955
 HV8955.The horizontal coordinates are valid at the epoch date displayed above
 HV8955.which is a decimal equivalence of Year/Month/Day.
 HV8955
 HV8955.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8955.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8955
 HV8955.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8955.GEOID18 height accuracy estimate available here.
 HV8955
 HV8955.Click photographs - Photos may exist for this station.
 HV8955
 HV8955.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8955
 HV8955.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8955
 HV8955.The ellipsoidal height was determined by GPS observations
 HV8955.and is referenced to NAD 83.
 HV8955
 HV8955. The following values were computed from the NAD 83(2011) position.
 HV8955
 HV8955;                    North         East     Units Scale Factor Converg.
 HV8955;SPC MD       -   133,515.004   405,946.814   MT  0.99994985   +0 02 34.8
 HV8955;SPC MD       -   438,040.48  1,331,843.84   sFT  0.99994985   +0 02 34.8
 HV8955;UTM  18      - 4,304,061.005   332,436.589   MT  0.99994575   -1 12 44.5
 HV8955
 HV8955!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8955!SPC MD       -   0.99999345  x   0.99994985  =   0.99994330
 HV8955!UTM  18      -   0.99999345  x   0.99994575  =   0.99993920
 HV8955
 HV8955_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3243604061(NAD 83)
 HV8955
 HV8955                          SUPERSEDED SURVEY CONTROL
 HV8955
 HV8955  NAD 83(2007)-  38 52 09.98013(N)    076 55 53.30479(W) AD(2002.00) 0
 HV8955  ELLIP H (02/10/07)   41.765  (m)                       GP(2002.00)    
 HV8955  ELLIP H (08/30/02)   41.760  (m)                       GP(       ) 4 2
 HV8955  NAD 83(1993)-  38 52 09.98060(N)    076 55 53.30535(W) AD(       ) 1
 HV8955  ELLIP H (11/14/94)   41.732  (m)                       GP(       ) 4 2
 HV8955  NAD 83(1991)-  38 52 09.98067(N)    076 55 53.30548(W) AD(       ) 1
 HV8955  ELLIP H (01/27/92)   41.716  (m)                       GP(       ) 4 1
 HV8955  NAD 83(1986)-  38 52 09.97924(N)    076 55 53.31613(W) AD(       ) 1
 HV8955  NGVD 29 (03/05/91)   74.3    (m)  OSU 89B  model used  GPS OBS        
 HV8955
 HV8955.Superseded values are not recommended for survey control.
 HV8955
 HV8955.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8955.See file dsdata.pdf to determine how the superseded data were derived.
 HV8955
 HV8955_MARKER: DD = SURVEY DISK
 HV8955_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8955_STAMPING: 19944
 HV8955_MARK LOGO: WSSC
 HV8955_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8955_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8955+STABILITY: SURFACE MOTION
 HV8955_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8955+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8955
 HV8955  HISTORY     - Date     Condition        Report By
 HV8955  HISTORY     - 1990     MONUMENTED       WSSC
 HV8955
 HV8955                          STATION DESCRIPTION
 HV8955
 HV8955'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8955'THE STATION IS LOCATED ABOUT 9.4 KM (5.8 MI) ESE OF WASHINGTON D.C.,
 HV8955'9.0 KM (5.6 MI) NNW OF ANDREWS AIR FORCE BASE AND 9.1 KM (5.7 MI)
 HV8955'SOUTHWEST OF LARGO, IN BRADBURY HEIGHTS. TO REACH THE STATION FROM
 HV8955'WHERE MARYLAND ROUTE 4 (PENNSYLVANIA AVENUE) GOES UNDER INTERSTATE
 HV8955'I-95 (CAPITOL BELTWAY), IN FORESTVILLE.  GO WEST ON ROUTE 4 6.6 KM
 HV8955'(4.1 MI) TO ALTON STREET, TURN RIGHT AND GO NORTHWEST 0.3 KM
 HV8955'(0.2 MI) TO NOVA AVENUE, TURN RIGHT AND GO NE 0.4 KM (0.2 MI) TO RAIL
 HV8955'STREET, TURN RIGHT AND GO SOUTHEAST TO END OF STREET, THE STATION IS
 HV8955'AT THE TOP OF THE BANK 7.6 M (24.9 FT) SSW OF THE CENTERLINE OF THE
 HV8955'END OF RAIL STREET AND 33.7 M (110.6 FT) SSE OF THE CENTERLINE OF
 HV8955'NOVA AVENUE. OWNERSHIP--PRINCE GEORGES COUNTY BOARD OF EDUCATION THE
 HV8955'STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED 19944 SET IN THE
 HV8955'TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH
 HV8955'IN THE GRASS. IT IS 26.84 M (88.06 FT) SOUTH OF THE WEST CORNER OF A
 HV8955'BRICK POTOMAC ELECTRIC POWER COMPANY BUILDING AND 26.84 M (88.06 FT)
 HV8955'NORTH OF THE WEST CORNER OF THE BRICK CORNER OF JOHN E HOWARD
 HV8955'ELEMENTARY SCHOOL BUILDING. NO REFERENCES WERE ESTABLISHED AT THIS
 HV8955'TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS
 HV8955'TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8956 ***********************************************************************
 HV8956  DESIGNATION -  19945
 HV8956  PID         -  HV8956
 HV8956  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8956  COUNTRY     -  US
 HV8956  USGS QUAD   -  ANACOSTIA (2016)
 HV8956
 HV8956                         *CURRENT SURVEY CONTROL
 HV8956  ______________________________________________________________________
 HV8956* NAD 83(2011) POSITION- 38 51 17.23984(N) 076 54 44.53616(W)   ADJUSTED
 HV8956* NAD 83(2011) ELLIP HT-    53.142 (meters)        (06/27/12)   ADJUSTED
 HV8956* NAD 83(2011) EPOCH   -  2010.00
 HV8956* NAVD 88 ORTHO HEIGHT -    85.505 (meters)      280.53  (feet) ADJUSTED
 HV8956  ______________________________________________________________________
 HV8956  GEOID HEIGHT    -        -32.374 (meters)                     GEOID18
 HV8956  NAD 83(2011) X  -  1,126,203.831 (meters)                     COMP
 HV8956  NAD 83(2011) Y  - -4,844,310.597 (meters)                     COMP
 HV8956  NAD 83(2011) Z  -  3,979,809.549 (meters)                     COMP
 HV8956  LAPLACE CORR    -         -4.58  (seconds)                    DEFLEC18
 HV8956  DYNAMIC HEIGHT  -         85.458 (meters)      280.37  (feet) COMP
 HV8956  MODELED GRAVITY -    980,071.3   (mgal)                       NAVD 88
 HV8956
 HV8956  VERT ORDER      -  FIRST     CLASS II
 HV8956
 HV8956  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8956  Standards:
 HV8956         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8956            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8956  -------------------------------------------------------------------
 HV8956  NETWORK    1.07   2.04           0.40   0.47   1.04     -0.08789707
 HV8956  -------------------------------------------------------------------
 HV8956  Click here for local accuracies and other accuracy information.
 HV8956
 HV8956.The horizontal coordinates were established by GPS observations
 HV8956.and adjusted by the National Geodetic Survey in June 2012.
 HV8956
 HV8956.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8956.been affixed to the stable North American tectonic plate. See 
 HV8956.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8956
 HV8956.The horizontal coordinates are valid at the epoch date displayed above
 HV8956.which is a decimal equivalence of Year/Month/Day.
 HV8956
 HV8956.The orthometric height was determined by differential leveling and
 HV8956.adjusted by the NATIONAL GEODETIC SURVEY
 HV8956.in August 2020.
 HV8956
 HV8956.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8956.GEOID18 height accuracy estimate available here.
 HV8956
 HV8956.Click photographs - Photos may exist for this station.
 HV8956
 HV8956.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8956
 HV8956.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8956
 HV8956.The ellipsoidal height was determined by GPS observations
 HV8956.and is referenced to NAD 83.
 HV8956
 HV8956.The dynamic height is computed by dividing the NAVD 88
 HV8956.geopotential number by the normal gravity value computed on the
 HV8956.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8956.degrees latitude (g = 980.6199 gals.).
 HV8956
 HV8956.The modeled gravity was interpolated from observed gravity values.
 HV8956
 HV8956. The following values were computed from the NAD 83(2011) position.
 HV8956
 HV8956;                    North         East     Units Scale Factor Converg.
 HV8956;SPC MD       -   131,890.171   407,606.081   MT  0.99994991   +0 03 18.0
 HV8956;SPC MD       -   432,709.67  1,337,287.62   sFT  0.99994991   +0 03 18.0
 HV8956;UTM  18      - 4,302,400.227   334,059.854   MT  0.99993908   -1 11 60.0
 HV8956
 HV8956!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8956!SPC MD       -   0.99999166  x   0.99994991  =   0.99994157
 HV8956!UTM  18      -   0.99999166  x   0.99993908  =   0.99993074
 HV8956
 HV8956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3405902400(NAD 83)
 HV8956
 HV8956                          SUPERSEDED SURVEY CONTROL
 HV8956
 HV8956  NAD 83(2007)-  38 51 17.24030(N)    076 54 44.53696(W) AD(2002.00) 0
 HV8956  ELLIP H (02/10/07)   53.151  (m)                       GP(2002.00)    
 HV8956  ELLIP H (08/30/02)   53.151  (m)                       GP(       ) 4 2
 HV8956  NAD 83(1993)-  38 51 17.24069(N)    076 54 44.53728(W) AD(       ) 1
 HV8956  ELLIP H (11/14/94)   53.135  (m)                       GP(       ) 4 2
 HV8956  NAD 83(1991)-  38 51 17.24087(N)    076 54 44.53775(W) AD(       ) 1
 HV8956  ELLIP H (01/27/92)   53.107  (m)                       GP(       ) 4 1
 HV8956  NAD 83(1986)-  38 51 17.23941(N)    076 54 44.54842(W) AD(       ) 1
 HV8956  NGVD 29 (03/05/91)   85.7    (m)  OSU 89B  model used  GPS OBS        
 HV8956
 HV8956.Superseded values are not recommended for survey control.
 HV8956
 HV8956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8956.See file dsdata.pdf to determine how the superseded data were derived.
 HV8956
 HV8956_MARKER: DD = SURVEY DISK
 HV8956_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8956_STAMPING: 5269 19945
 HV8956_MARK LOGO: WSSC
 HV8956_PROJECTION: RECESSED 5 CENTIMETERS
 HV8956_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8956_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8956+STABILITY: SURFACE MOTION
 HV8956_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8956+SATELLITE: SATELLITE OBSERVATIONS - November 20, 2023
 HV8956
 HV8956  HISTORY     - Date     Condition        Report By
 HV8956  HISTORY     - 1990     MONUMENTED       WSSC
 HV8956  HISTORY     - 19920713 GOOD             NOS
 HV8956  HISTORY     - 20191028 GOOD             MDSHA
 HV8956  HISTORY     - 20231120 GOOD             WTBALL
 HV8956
 HV8956                          STATION DESCRIPTION
 HV8956
 HV8956'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8956'THE STATION IS LOCATED ABOUT 11.6 KM (7.2 MI) ESE OF WASHINGTON D.C.,
 HV8956'6.0 KM (3.7 MI) NORTHWEST OF ANDREWS AIR FORCE BASE AND 8.4 KM
 HV8956'(5.2 MI) SOUTHWEST OF LARGO, IN SUITLAND. TO REACH THE STATION FROM
 HV8956'WHERE MARYLAND STATE ROUTE 4 (PENNSYLVANIA AVE) GOES UNDER INTERSTATE
 HV8956'I-95 (CAPITOL BELTWAY) IN FORESTVILLLE, GO WEST ON ROUTE 4 4.3 KM
 HV8956'(2.7 MI) TO THE STATION ON THE LEFT IN THE GRASS MEDIAN, 9.2 M
 HV8956'(30.2 FT) NORTHEAST OF THE EAST BOUND TRAFFIC LANE AND 14.0 M
 HV8956'(45.9 FT) SOUTHWEST OF THE WEST BOUND TRAFFIC LANE OF ROUTE
 HV8956'4. OWNERSHIP--STATE ROAD RIGHT-OF-WAY THE STATION MARK IS A STANDARD
 HV8956'WSSC BRASS DISK STAMPED 19945 SET IN THE TOP OF A ROUND CONCRETE
 HV8956'MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET RECESSED 0.05 M (0.16 FT) IN
 HV8956'THE GRASS. IT IS 14.01 M (45.96 FT) NORTHWEST OF THE NORTH CORNER OF
 HV8956'A METAL GRATE OF A STORM DRAIN IN THE GRASS MEDIAN STRIP, AND 13.87 M
 HV8956'(45.51 FT) NORTHWEST OF THE WEST CORNER OF THE METAL GRATE OF THE
 HV8956'STORM DRAIN IN THE GRASS MEDIAN STRIP. NO REFERENCE MARKS WERE
 HV8956'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 HV8956'STATION AT THIS TIME.
 HV8956
 HV8956                          STATION RECOVERY (1992)
 HV8956
 HV8956'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 HV8956'RECOVERED IN GOOD CONDITION.
 HV8956
 HV8956                          STATION RECOVERY (2019)
 HV8956
 HV8956'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 HV8956'RECOVERED IN GOOD CONDITION.
 HV8956
 HV8956                          STATION RECOVERY (2023)
 HV8956
 HV8956'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2023 (JMB)
 HV8956'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8957 ***********************************************************************
 HV8957  DESIGNATION -  19946
 HV8957  PID         -  HV8957
 HV8957  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8957  COUNTRY     -  US
 HV8957  USGS QUAD   -  ANACOSTIA (2016)
 HV8957
 HV8957                         *CURRENT SURVEY CONTROL
 HV8957  ______________________________________________________________________
 HV8957* NAD 83(2011) POSITION- 38 50 44.41985(N) 076 53 33.15568(W)   ADJUSTED
 HV8957* NAD 83(2011) ELLIP HT-    48.920 (meters)        (06/27/12)   ADJUSTED
 HV8957* NAD 83(2011) EPOCH   -  2010.00
 HV8957* NAVD 88 ORTHO HEIGHT -    81.338 (meters)      266.86  (feet) ADJUSTED
 HV8957  ______________________________________________________________________
 HV8957  GEOID HEIGHT    -        -32.437 (meters)                     GEOID18
 HV8957  NAD 83(2011) X  -  1,128,023.424 (meters)                     COMP
 HV8957  NAD 83(2011) Y  - -4,844,535.687 (meters)                     COMP
 HV8957  NAD 83(2011) Z  -  3,979,018.710 (meters)                     COMP
 HV8957  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 HV8957  DYNAMIC HEIGHT  -         81.293 (meters)      266.71  (feet) COMP
 HV8957  MODELED GRAVITY -    980,070.7   (mgal)                       NAVD 88
 HV8957
 HV8957  VERT ORDER      -  FIRST     CLASS II
 HV8957
 HV8957  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8957  Standards:
 HV8957         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8957            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8957  -------------------------------------------------------------------
 HV8957  NETWORK    1.15   2.39           0.48   0.46   1.22     -0.08711547
 HV8957  -------------------------------------------------------------------
 HV8957  Click here for local accuracies and other accuracy information.
 HV8957
 HV8957.The horizontal coordinates were established by GPS observations
 HV8957.and adjusted by the National Geodetic Survey in June 2012.
 HV8957
 HV8957.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8957.been affixed to the stable North American tectonic plate. See 
 HV8957.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8957
 HV8957.The horizontal coordinates are valid at the epoch date displayed above
 HV8957.which is a decimal equivalence of Year/Month/Day.
 HV8957
 HV8957.The orthometric height was determined by differential leveling and
 HV8957.adjusted by the NATIONAL GEODETIC SURVEY
 HV8957.in August 2020.
 HV8957
 HV8957.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8957.GEOID18 height accuracy estimate available here.
 HV8957
 HV8957.Click photographs - Photos may exist for this station.
 HV8957
 HV8957.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8957
 HV8957.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8957
 HV8957.The ellipsoidal height was determined by GPS observations
 HV8957.and is referenced to NAD 83.
 HV8957
 HV8957.The dynamic height is computed by dividing the NAVD 88
 HV8957.geopotential number by the normal gravity value computed on the
 HV8957.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8957.degrees latitude (g = 980.6199 gals.).
 HV8957
 HV8957.The modeled gravity was interpolated from observed gravity values.
 HV8957
 HV8957. The following values were computed from the NAD 83(2011) position.
 HV8957
 HV8957;                    North         East     Units Scale Factor Converg.
 HV8957;SPC MD       -   130,879.997   409,328.311   MT  0.99994999   +0 04 02.8
 HV8957;SPC MD       -   429,395.46  1,342,937.97   sFT  0.99994999   +0 04 02.8
 HV8957;UTM  18      - 4,301,352.593   335,759.523   MT  0.99993217   -1 11 14.3
 HV8957
 HV8957!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8957!SPC MD       -   0.99999232  x   0.99994999  =   0.99994231
 HV8957!UTM  18      -   0.99999232  x   0.99993217  =   0.99992450
 HV8957
 HV8957_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3575901352(NAD 83)
 HV8957
 HV8957                          SUPERSEDED SURVEY CONTROL
 HV8957
 HV8957  NAD 83(2007)-  38 50 44.42031(N)    076 53 33.15649(W) AD(2002.00) 0
 HV8957  ELLIP H (02/10/07)   48.929  (m)                       GP(2002.00)    
 HV8957  ELLIP H (08/30/02)   48.927  (m)                       GP(       ) 4 2
 HV8957  NAD 83(1993)-  38 50 44.42069(N)    076 53 33.15691(W) AD(       ) 1
 HV8957  ELLIP H (11/14/94)   48.908  (m)                       GP(       ) 4 2
 HV8957  NAD 83(1991)-  38 50 44.42088(N)    076 53 33.15728(W) AD(       ) 1
 HV8957  ELLIP H (01/27/92)   48.885  (m)                       GP(       ) 4 1
 HV8957  NAD 83(1986)-  38 50 44.41942(N)    076 53 33.16794(W) AD(       ) 1
 HV8957  NGVD 29 (03/05/91)   81.5    (m)  OSU 89B  model used  GPS OBS        
 HV8957
 HV8957.Superseded values are not recommended for survey control.
 HV8957
 HV8957.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8957.See file dsdata.pdf to determine how the superseded data were derived.
 HV8957
 HV8957_MARKER: DD = SURVEY DISK
 HV8957_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8957_STAMPING: 5268 A 19946
 HV8957_MARK LOGO: WSSC
 HV8957_PROJECTION: RECESSED 12 CENTIMETERS
 HV8957_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8957_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8957+STABILITY: SURFACE MOTION
 HV8957_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8957+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 HV8957
 HV8957  HISTORY     - Date     Condition        Report By
 HV8957  HISTORY     - 1990     MONUMENTED       WSSC
 HV8957  HISTORY     - 19970213 GOOD             DMW
 HV8957  HISTORY     - 20191028 GOOD             MDSHA
 HV8957
 HV8957                          STATION DESCRIPTION
 HV8957
 HV8957'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8957'THE STATION IS LOCATED ABOUT 14.0 KM (8.7 MI) SOUTHEAST OF WASHINGTON
 HV8957'D.C., 5.0 KM (3.1 MI) NNW OF ANDREWS AIR FORCE BASE AND 7.8 KM
 HV8957'(4.8 MI) SOUTHWEST OF LARGO, IN DISTRICT HEIGHTS. TO REACH THE
 HV8957'STATION FROM WHERE MARYLAND STATE ROUTE 4 (PENNSYLVANIA AVE) GOES
 HV8957'UNDER INTERSTATE I-95 (CAPITOL BELTWAY) IN FORESTVILLE GO WEST ON
 HV8957'ROUTE 4, 2.3 KM (1.4 MI) TO THE STATION ON THE LEFT IN THE GRASS
 HV8957'MEDIAN 11.3 M (37.1 FT) NORTHEAST OF CENTERLINE OF THE EAST BOUND
 HV8957'LANE OF ROUTE 4, 12.1 M (39.7 FT) SOUTHWEST OF THE CENTERLINE OF THE
 HV8957'WEST BOUND LANE OF ROUTE 4 AND 61.0 M (200.1 FT) NORTHWEST OF THE
 HV8957'CENTERLINE OF WALTERS LANE. OWNERSHIP--STATE ROAD RIGHT-OF-WAY THE
 HV8957'STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED 19946 SET IN THE
 HV8957'TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER RECESSED
 HV8957'0.05 M (0.16 FT) IN THE GRASS. IT IS 34.96 M (114.70 FT) ESE OF A CUT
 HV8957'NAIL IN THE NORTH SIDE OF A CHESAPEAKE AND POTOMAC (C AND P)
 HV8957'TELEPHONE POLE NUMBER 8884 AND 55.97 M (183.63 FT) NORTHWEST OF THE
 HV8957'FACE OF A METAL TRAFFIC LIGHT POLE. NO REFERENCE MARKS WERE
 HV8957'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 HV8957'STATION AT THIS TIME.
 HV8957
 HV8957                          STATION RECOVERY (1997)
 HV8957
 HV8957'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 HV8957'RECOVERED AS DESCRIBED.
 HV8957
 HV8957                          STATION RECOVERY (2019)
 HV8957
 HV8957'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 HV8957'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8958 ***********************************************************************
 HV8958  DESIGNATION -  19947
 HV8958  PID         -  HV8958
 HV8958  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8958  COUNTRY     -  US
 HV8958  USGS QUAD   -  UPPER MARLBORO (2016)
 HV8958
 HV8958                         *CURRENT SURVEY CONTROL
 HV8958  ______________________________________________________________________
 HV8958* NAD 83(2011) POSITION- 38 50 38.54444(N) 076 52 24.66068(W)   ADJUSTED
 HV8958* NAD 83(2011) ELLIP HT-    52.638 (meters)        (06/27/12)   ADJUSTED
 HV8958* NAD 83(2011) EPOCH   -  2010.00
 HV8958* NAVD 88 ORTHO HEIGHT -    85.1   (meters)      279.    (feet) VERTCON3
 HV8958  ______________________________________________________________________
 HV8958  GEOID HEIGHT    -        -32.490 (meters)                     GEOID18
 HV8958  NAD 83(2011) X  -  1,129,658.567 (meters)                     COMP
 HV8958  NAD 83(2011) Y  - -4,844,274.324 (meters)                     COMP
 HV8958  NAD 83(2011) Z  -  3,978,879.930 (meters)                     COMP
 HV8958  LAPLACE CORR    -         -5.08  (seconds)                    DEFLEC18
 HV8958
 HV8958  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8958  Standards:
 HV8958         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8958            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8958  -------------------------------------------------------------------
 HV8958  NETWORK    0.92   1.86           0.37   0.38   0.95     -0.06794883
 HV8958  -------------------------------------------------------------------
 HV8958  Click here for local accuracies and other accuracy information.
 HV8958
 HV8958.The horizontal coordinates were established by GPS observations
 HV8958.and adjusted by the National Geodetic Survey in June 2012.
 HV8958
 HV8958.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8958.been affixed to the stable North American tectonic plate. See 
 HV8958.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8958
 HV8958.The horizontal coordinates are valid at the epoch date displayed above
 HV8958.which is a decimal equivalence of Year/Month/Day.
 HV8958
 HV8958.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8958.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8958
 HV8958.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8958.GEOID18 height accuracy estimate available here.
 HV8958
 HV8958.Click photographs - Photos may exist for this station.
 HV8958
 HV8958.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8958
 HV8958.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8958
 HV8958.The ellipsoidal height was determined by GPS observations
 HV8958.and is referenced to NAD 83.
 HV8958
 HV8958. The following values were computed from the NAD 83(2011) position.
 HV8958
 HV8958;                    North         East     Units Scale Factor Converg.
 HV8958;SPC MD       -   130,700.943   410,980.240   MT  0.99995000   +0 04 45.8
 HV8958;SPC MD       -   428,808.01  1,348,357.67   sFT  0.99995000   +0 04 45.8
 HV8958;UTM  18      - 4,301,137.414   337,407.101   MT  0.99992554   -1 10 31.2
 HV8958
 HV8958!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8958!SPC MD       -   0.99999174  x   0.99995000  =   0.99994174
 HV8958!UTM  18      -   0.99999174  x   0.99992554  =   0.99991728
 HV8958
 HV8958_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3740701137(NAD 83)
 HV8958
 HV8958                          SUPERSEDED SURVEY CONTROL
 HV8958
 HV8958  NAD 83(2007)-  38 50 38.54488(N)    076 52 24.66150(W) AD(2002.00) 0
 HV8958  ELLIP H (02/10/07)   52.647  (m)                       GP(2002.00)    
 HV8958  ELLIP H (08/30/02)   52.644  (m)                       GP(       ) 4 2
 HV8958  NAD 83(1993)-  38 50 38.54525(N)    076 52 24.66192(W) AD(       ) 1
 HV8958  ELLIP H (11/14/94)   52.624  (m)                       GP(       ) 4 2
 HV8958  NAD 83(1991)-  38 50 38.54545(N)    076 52 24.66235(W) AD(       ) 1
 HV8958  ELLIP H (01/27/92)   52.604  (m)                       GP(       ) 4 1
 HV8958  NAD 83(1986)-  38 50 38.54399(N)    076 52 24.67302(W) AD(       ) 1
 HV8958  NGVD 29 (03/05/91)   85.3    (m)  OSU 89B  model used  GPS OBS        
 HV8958
 HV8958.Superseded values are not recommended for survey control.
 HV8958
 HV8958.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8958.See file dsdata.pdf to determine how the superseded data were derived.
 HV8958
 HV8958_STAMPING: 19947
 HV8958_MARK LOGO: WSSC
 HV8958_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8958+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8958
 HV8958  HISTORY     - Date     Condition        Report By
 HV8958  HISTORY     - 1990     MONUMENTED       WSSC
 HV8958  HISTORY     - 20191028 MARK NOT FOUND   ARCSHE
 HV8958
 HV8958                          STATION DESCRIPTION
 HV8958
 HV8958'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8958'THE STATION IS LOCATED ABOUT 15.8 KM (9.8 MI) ESE OF WASHINGTON D.C.,
 HV8958'4.0 KM (2.5 MI) NORTH OF ANDREWS AIR FORCE BASE AND 6.6 KM (4.1 MI)
 HV8958'SSW OF LARGO, IN FORESTVILLE. TO REACH THE STATION FROM WHERE MARYLAND
 HV8958'STATE ROUTE 4 (PENNSYLVANIA AVE) GOES UNDER INTERSTATE I-95 (CAPITOL
 HV8958'BELTWAY) IN FORESTVILLE GO WEST ON RT 4, 0.6 KM (0.4 MI) TO
 HV8958'FORESTVILLE ROAD TURN RIGHT AND GO NORTH 0.3 KM (0.2 MI) TO MARLBORO
 HV8958'PIKE, TURN RIGHT AND GO SOUTHEAST 45 M (147.6 FT) TO STATION ON
 HV8958'RIGHT, 9.7 M (31.8 FT) SOUTHWEST OF THE CENTERLINE OF THE
 HV8958'ROAD. OWNERSHIP--COUNTY ROAD RIGHT-OF-WAY THE STATION MARK IS A
 HV8958'STANDARD WSSC BRASS DISK STAMPED 19947 SET IN THE TOP OF A ROUND
 HV8958'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH IN THE
 HV8958'GRASS. IT IS 27.16 M (89.11 FT) SOUTH OF A CUT NAIL IN THE EAST SIDE
 HV8958'OF POTOMAC ELECTRIC POWER COMPANY POLE NUMBER 835368-9314, 40.05 M
 HV8958'(131.40 FT) SOUTHEAST OF A CUT NAIL IN THE NORTHEAST SIDE OF A PEPCO
 HV8958'POWER POLE NUMBER 835368-8413 AND 27.23 M (89.34 FT) SOUTHEAST OF THE
 HV8958'SOUTHEAST CORNER OF A TRAFFIC CONTROL BOX. NO REFERENCE MARKS WERE
 HV8958'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 HV8958'STATION AT THIS TIME.
 HV8958
 HV8958                          STATION RECOVERY (2019)
 HV8958
 HV8958'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HV8958'NEW SOD HAS BEEN PLACED IN THE AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8959 ***********************************************************************
 HV8959  DESIGNATION -  19948
 HV8959  PID         -  HV8959
 HV8959  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8959  COUNTRY     -  US
 HV8959  USGS QUAD   -  UPPER MARLBORO (2016)
 HV8959
 HV8959                         *CURRENT SURVEY CONTROL
 HV8959  ______________________________________________________________________
 HV8959* NAD 83(2011) POSITION- 38 50 53.15617(N) 076 50 39.63621(W)   ADJUSTED
 HV8959* NAD 83(2011) ELLIP HT-    54.081 (meters)        (06/27/12)   ADJUSTED
 HV8959* NAD 83(2011) EPOCH   -  2010.00
 HV8959* NAVD 88 ORTHO HEIGHT -    86.5   (meters)      284.    (feet) VERTCON3
 HV8959  ______________________________________________________________________
 HV8959  GEOID HEIGHT    -        -32.563 (meters)                     GEOID18
 HV8959  NAD 83(2011) X  -  1,132,060.926 (meters)                     COMP
 HV8959  NAD 83(2011) Y  - -4,843,424.396 (meters)                     COMP
 HV8959  NAD 83(2011) Z  -  3,979,231.765 (meters)                     COMP
 HV8959  LAPLACE CORR    -         -5.60  (seconds)                    DEFLEC18
 HV8959
 HV8959  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8959  Standards:
 HV8959         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8959            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8959  -------------------------------------------------------------------
 HV8959  NETWORK    1.02   1.94           0.38   0.45   0.99     -0.12652522
 HV8959  -------------------------------------------------------------------
 HV8959  Click here for local accuracies and other accuracy information.
 HV8959
 HV8959.The horizontal coordinates were established by GPS observations
 HV8959.and adjusted by the National Geodetic Survey in June 2012.
 HV8959
 HV8959.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8959.been affixed to the stable North American tectonic plate. See 
 HV8959.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8959
 HV8959.The horizontal coordinates are valid at the epoch date displayed above
 HV8959.which is a decimal equivalence of Year/Month/Day.
 HV8959
 HV8959.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8959.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8959
 HV8959.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8959.GEOID18 height accuracy estimate available here.
 HV8959
 HV8959.Click photographs - Photos may exist for this station.
 HV8959
 HV8959.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8959
 HV8959.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8959
 HV8959.The ellipsoidal height was determined by GPS observations
 HV8959.and is referenced to NAD 83.
 HV8959
 HV8959. The following values were computed from the NAD 83(2011) position.
 HV8959
 HV8959;                    North         East     Units Scale Factor Converg.
 HV8959;SPC MD       -   131,155.413   413,512.073   MT  0.99994996   +0 05 51.7
 HV8959;SPC MD       -   430,299.05  1,356,664.19   sFT  0.99994996   +0 05 51.7
 HV8959;UTM  18      - 4,301,536.321   339,948.204   MT  0.99991545   -1 09 25.6
 HV8959
 HV8959!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8959!SPC MD       -   0.99999151  x   0.99994996  =   0.99994148
 HV8959!UTM  18      -   0.99999151  x   0.99991545  =   0.99990697
 HV8959
 HV8959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3994801536(NAD 83)
 HV8959
 HV8959                          SUPERSEDED SURVEY CONTROL
 HV8959
 HV8959  NAD 83(2007)-  38 50 53.15658(N)    076 50 39.63704(W) AD(2002.00) 0
 HV8959  ELLIP H (02/10/07)   54.091  (m)                       GP(2002.00)    
 HV8959  ELLIP H (08/30/02)   54.085  (m)                       GP(       ) 4 2
 HV8959  NAD 83(1993)-  38 50 53.15696(N)    076 50 39.63747(W) AD(       ) 1
 HV8959  ELLIP H (11/14/94)   54.065  (m)                       GP(       ) 4 2
 HV8959  NAD 83(1991)-  38 50 53.15716(N)    076 50 39.63797(W) AD(       ) 1
 HV8959  ELLIP H (01/27/92)   54.049  (m)                       GP(       ) 4 1
 HV8959  NAD 83(1986)-  38 50 53.15568(N)    076 50 39.64863(W) AD(       ) 1
 HV8959  NGVD 29 (03/05/91)   86.8    (m)  OSU 89B  model used  GPS OBS        
 HV8959
 HV8959.Superseded values are not recommended for survey control.
 HV8959
 HV8959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8959.See file dsdata.pdf to determine how the superseded data were derived.
 HV8959
 HV8959_MARKER: DD = SURVEY DISK
 HV8959_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8959_STAMPING: 19948
 HV8959_MARK LOGO: WSSC
 HV8959_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8959_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8959+STABILITY: SURFACE MOTION
 HV8959_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8959+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8959
 HV8959  HISTORY     - Date     Condition        Report By
 HV8959  HISTORY     - 1990     MONUMENTED       WSSC
 HV8959  HISTORY     - 19961001 GOOD             DMW
 HV8959
 HV8959                          STATION DESCRIPTION
 HV8959
 HV8959'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8959'THE STATION IS LOCATED ABOUT 17.8 KM (11.1 MI) ESE OF WASHINGTON D.C.,
 HV8959'6.0 KM (3.7 MI) NORTHEAST OF ANDREWS AIR FORCE BASE AND 5.8 KM
 HV8959'(3.6 MI) SOUTH OF LARGO IN DARCY HILLS SUBDIVISION. TO REACH THE
 HV8959'STATION FROM WHERE MARYLAND STATE ROUTE 4 (PENNSYLVANIA AVE) GOES
 HV8959'UNDER INTERSTATE I-95 (CAPITOL BELTWAY) IN FORESTVILLE GO SOUTHWEST
 HV8959'0.5 KM (0.3 MI) TO WESTPHALIA ROUD, TURN LEFT GO NORTH 1.9 KM
 HV8959'(1.2 MI) TO DARCY RD, TURN LEFT GO NORTH 0.4 KM (0.2 MI) TO STATION
 HV8959'ON THE RIGHT, IN FRONT OF HOUSE NUMBER 8348 DARCY ROAD, 5.4 M
 HV8959'(17.7 FT) EAST OF THE CENTERLINE OF THE ROAD. OWNERSHIP--COUNTY ROAD
 HV8959'RIGHT-OF-WAY. THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 HV8959'19948 SET IN THE TOP OF A ROUND CONCRETE MANUMENT 0.2 M (0.7 FT) IN
 HV8959'DIAMETER SET FLUSH IN THE GRASS. IT IS 22.20 M (72.83 FT) NORTH OF A
 HV8959'CUT NAIL IN THE WEST SIDE OF A POTOMAC ELECTRIC POWER COMPANY POLE
 HV8959'NUMBER 844369-2654, 33.86 M (111.09 FT) SOUTHEAST OF A CUT NAIL IN
 HV8959'THE NORTHEAST SIDE OF A CHESAPEAKE AND POTOMAC TELEPHONE COMPANY POLE
 HV8959'NUMBER 17379, 40.83 M (133.96 FT) SOUTH OF A STREET LAMP POLE AND 45
 HV8959'M (147.6 FT) SSE OF THE CENTERLINE OF DARCY PLACE. NO REFERENCE MARKS
 HV8959'WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR
 HV8959'THIS STATION AT THIS TIME.
 HV8959
 HV8959                          STATION RECOVERY (1996)
 HV8959
 HV8959'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1996 (JMS)
 HV8959'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8960 ***********************************************************************
 HV8960  DESIGNATION -  19949
 HV8960  PID         -  HV8960
 HV8960  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8960  COUNTRY     -  US
 HV8960  USGS QUAD   -  LANHAM (2016)
 HV8960
 HV8960                         *CURRENT SURVEY CONTROL
 HV8960  ______________________________________________________________________
 HV8960* NAD 83(2011) POSITION- 38 54 05.56979(N) 076 46 17.13291(W)   ADJUSTED
 HV8960* NAD 83(2011) ELLIP HT-     3.556 (meters)        (06/27/12)   ADJUSTED
 HV8960* NAD 83(2011) EPOCH   -  2010.00
 HV8960* NAVD 88 ORTHO HEIGHT -    36.1   (meters)      118.    (feet) VERTCON3
 HV8960  ______________________________________________________________________
 HV8960  GEOID HEIGHT    -        -32.696 (meters)                     GEOID18
 HV8960  NAD 83(2011) X  -  1,137,362.819 (meters)                     COMP
 HV8960  NAD 83(2011) Y  - -4,838,316.303 (meters)                     COMP
 HV8960  NAD 83(2011) Z  -  3,983,819.381 (meters)                     COMP
 HV8960  LAPLACE CORR    -         -5.71  (seconds)                    DEFLEC18
 HV8960
 HV8960  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8960  Standards:
 HV8960         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8960            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8960  -------------------------------------------------------------------
 HV8960  NETWORK    1.41   2.84           0.60   0.54   1.45      0.24840250
 HV8960  -------------------------------------------------------------------
 HV8960  Click here for local accuracies and other accuracy information.
 HV8960
 HV8960.The horizontal coordinates were established by GPS observations
 HV8960.and adjusted by the National Geodetic Survey in June 2012.
 HV8960
 HV8960.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8960.been affixed to the stable North American tectonic plate. See 
 HV8960.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8960
 HV8960.The horizontal coordinates are valid at the epoch date displayed above
 HV8960.which is a decimal equivalence of Year/Month/Day.
 HV8960
 HV8960.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8960.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8960
 HV8960.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8960.GEOID18 height accuracy estimate available here.
 HV8960
 HV8960.Click photographs - Photos may exist for this station.
 HV8960
 HV8960.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8960
 HV8960.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8960
 HV8960.The ellipsoidal height was determined by GPS observations
 HV8960.and is referenced to NAD 83.
 HV8960
 HV8960. The following values were computed from the NAD 83(2011) position.
 HV8960
 HV8960;                    North         East     Units Scale Factor Converg.
 HV8960;SPC MD       -   137,101.871   419,826.958   MT  0.99994995   +0 08 36.5
 HV8960;SPC MD       -   449,808.39  1,377,382.28   sFT  0.99994995   +0 08 36.5
 HV8960;UTM  18      - 4,307,342.717   346,391.559   MT  0.99989055   -1 06 45.5
 HV8960
 HV8960!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8960!SPC MD       -   0.99999944  x   0.99994995  =   0.99994939
 HV8960!UTM  18      -   0.99999944  x   0.99989055  =   0.99988999
 HV8960
 HV8960_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4639107342(NAD 83)
 HV8960
 HV8960                          SUPERSEDED SURVEY CONTROL
 HV8960
 HV8960  NAD 83(2007)-  38 54 05.57013(N)    076 46 17.13371(W) AD(2002.00) 0
 HV8960  ELLIP H (02/10/07)    3.577  (m)                       GP(2002.00)    
 HV8960  ELLIP H (08/30/02)    3.578  (m)                       GP(       ) 4 2
 HV8960  NAD 83(1991)-  38 54 05.57012(N)    076 46 17.13377(W) AD(       ) 1
 HV8960  ELLIP H (01/27/92)    3.526  (m)                       GP(       ) 4 1
 HV8960  NAD 83(1986)-  38 54 05.56854(N)    076 46 17.14445(W) AD(       ) 1
 HV8960  NGVD 29 (03/05/91)   36.4    (m)  OSU 89B  model used  GPS OBS        
 HV8960
 HV8960.Superseded values are not recommended for survey control.
 HV8960
 HV8960.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8960.See file dsdata.pdf to determine how the superseded data were derived.
 HV8960
 HV8960_MARKER: DD = SURVEY DISK
 HV8960_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8960_STAMPING: 19949
 HV8960_MARK LOGO: WSSC
 HV8960_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8960_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8960+STABILITY: SURFACE MOTION
 HV8960_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8960+SATELLITE: SATELLITE OBSERVATIONS - March 04, 2004
 HV8960
 HV8960  HISTORY     - Date     Condition        Report By
 HV8960  HISTORY     - 1990     MONUMENTED       WSSC
 HV8960  HISTORY     - 20040304 GOOD             URS
 HV8960
 HV8960                          STATION DESCRIPTION
 HV8960
 HV8960'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8960'THE STATION IS LOCATED ABOUT 5.5 KM (3.4 MI) EAST OF LARGO, 6.2 KM
 HV8960'(3.9 MI) SOUTHWEST OF BOWIE AND 9.5 KM (5.9 MI) NNW OF UPPER
 HV8960'MARLBORO, IN KETTERING. TO REACH THE STATION FROM WHERE MARYLAND
 HV8960'STATE ROUTE 214 (CENTRAL AVE)GOES UNDER INTERSTATE I-95 (CAPITOL
 HV8960'BELTWAY) IN LARGO, GO EAST ON ROUTE 214 7.0 KM (4.3 MI) TO THE
 HV8960'ENTRANCE TO WILD WORLD PARK, TURN LEFT AND GO NORTH 40 M (131.2 FT)
 HV8960'TO THE NORTH END OF THE TRAFFIC ISLAND.  THE STATION IS IN THE NNW
 HV8960'SECTION OF THE TRAFFIC ISLAND WHERE THE FLOWER BED AND GRASS MEET,
 HV8960'8.6 M (28.2 FT) SOUTH OF CENTERLINE OF THE NORTH END OF THE MACADAM
 HV8960'TRAFFIC ISLAND. OWNERSHIP-- WILD WORLD PARK. THE STATION MARK IS A
 HV8960'STANDARD WSSC BRASS DISK STAMPED 19949 SET IN THE TOP OF A ROUND
 HV8960'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER RECESSED 0.1 M (0.3 FT)
 HV8960'IN THE FLOWER BED. IT IS 30.27 M (99.31 FT) SOUTH OF THE WEST CORNER
 HV8960'OF THE STONE WILD WORLD SIGN, 30.92 M (101.44 FT) SSW OF THE EAST
 HV8960'CORNER OF THE STONE WILD WORLD SIGN, 13.76 M (45.14 FT) SOUTHEAST OF
 HV8960'THE SOUTHEAST FACE OF A METAL LAMP POLE, 15.45 M (50.69 FT) SOUTHWEST
 HV8960'OF THE SOUTHWEST FACE OF A METAL LAMP POLE AND 16.42 M (53.87 FT)
 HV8960'NORTH OF THE NORTH FACE OF A METAL LAMP POLE. NO REFERENCE MARKS WERE
 HV8960'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 HV8960'STATION AT THIS TIME.
 HV8960
 HV8960                          STATION RECOVERY (2004)
 HV8960
 HV8960'RECOVERY NOTE BY URS COMPANY 2004
 HV8960'STAMPED BM 5054
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8961 ***********************************************************************
 HV8961  DESIGNATION -  19950
 HV8961  PID         -  HV8961
 HV8961  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8961  COUNTRY     -  US
 HV8961  USGS QUAD   -  LANHAM (2016)
 HV8961
 HV8961                         *CURRENT SURVEY CONTROL
 HV8961  ______________________________________________________________________
 HV8961* NAD 83(2011) POSITION- 38 55 16.05361(N) 076 48 13.92585(W)   ADJUSTED
 HV8961* NAD 83(2011) ELLIP HT-    17.476 (meters)        (06/27/12)   ADJUSTED
 HV8961* NAD 83(2011) EPOCH   -  2010.00
 HV8961* NAVD 88 ORTHO HEIGHT -    50.0   (meters)      164.    (feet) GPS OBS
 HV8961  ______________________________________________________________________
 HV8961  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV8961  GEOID HEIGHT    -        -32.930 (meters)                     GEOID93
 HV8961  GEOID HEIGHT    -        -32.571 (meters)                     GEOID18
 HV8961  NAD 83(2011) X  -  1,134,313.857 (meters)                     COMP
 HV8961  NAD 83(2011) Y  - -4,837,640.902 (meters)                     COMP
 HV8961  NAD 83(2011) Z  -  3,985,519.385 (meters)                     COMP
 HV8961  LAPLACE CORR    -         -5.43  (seconds)                    DEFLEC18
 HV8961
 HV8961  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8961  Standards:
 HV8961         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8961            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8961  -------------------------------------------------------------------
 HV8961  NETWORK    0.83   1.72           0.33   0.35   0.88      0.04274938
 HV8961  -------------------------------------------------------------------
 HV8961  Click here for local accuracies and other accuracy information.
 HV8961
 HV8961.The horizontal coordinates were established by GPS observations
 HV8961.and adjusted by the National Geodetic Survey in June 2012.
 HV8961
 HV8961.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8961.been affixed to the stable North American tectonic plate. See 
 HV8961.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8961
 HV8961.The horizontal coordinates are valid at the epoch date displayed above
 HV8961.which is a decimal equivalence of Year/Month/Day.
 HV8961
 HV8961.The orthometric height was determined by GPS observations and a
 HV8961.high-resolution geoid model.
 HV8961
 HV8961.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8961.GEOID18 height accuracy estimate available here.
 HV8961
 HV8961.Click photographs - Photos may exist for this station.
 HV8961
 HV8961.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8961
 HV8961.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8961
 HV8961.The ellipsoidal height was determined by GPS observations
 HV8961.and is referenced to NAD 83.
 HV8961
 HV8961. The following values were computed from the NAD 83(2011) position.
 HV8961
 HV8961;                    North         East     Units Scale Factor Converg.
 HV8961;SPC MD       -   139,268.732   417,008.171   MT  0.99995016   +0 07 23.2
 HV8961;SPC MD       -   456,917.50  1,368,134.31   sFT  0.99995016   +0 07 23.2
 HV8961;UTM  18      - 4,309,570.741   343,621.110   MT  0.99990113   -1 08 00.6
 HV8961
 HV8961!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8961!SPC MD       -   0.99999726  x   0.99995016  =   0.99994742
 HV8961!UTM  18      -   0.99999726  x   0.99990113  =   0.99989839
 HV8961
 HV8961_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4362109570(NAD 83)
 HV8961
 HV8961                          SUPERSEDED SURVEY CONTROL
 HV8961
 HV8961  NAD 83(2007)-  38 55 16.05394(N)    076 48 13.92665(W) AD(2002.00) 0
 HV8961  ELLIP H (02/10/07)   17.496  (m)                       GP(2002.00)    
 HV8961  ELLIP H (08/30/02)   17.497  (m)                       GP(       ) 4 2
 HV8961  NAD 83(1991)-  38 55 16.05387(N)    076 48 13.92672(W) AD(       ) 1
 HV8961  ELLIP H (01/27/92)   17.444  (m)                       GP(       ) 4 1
 HV8961  NAD 83(1986)-  38 55 16.05228(N)    076 48 13.93740(W) AD(       ) 1
 HV8961  NGVD 29 (03/05/91)   50.2    (m)  OSU 89B  model used  GPS OBS        
 HV8961
 HV8961.Superseded values are not recommended for survey control.
 HV8961
 HV8961.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8961.See file dsdata.pdf to determine how the superseded data were derived.
 HV8961
 HV8961_MARKER: DD = SURVEY DISK
 HV8961_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8961_STAMPING: 19950
 HV8961_MARK LOGO: WSSC
 HV8961_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8961_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8961+STABILITY: SURFACE MOTION
 HV8961_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8961+SATELLITE: SATELLITE OBSERVATIONS - March 04, 2004
 HV8961
 HV8961  HISTORY     - Date     Condition        Report By
 HV8961  HISTORY     - 1990     MONUMENTED       WSSC
 HV8961  HISTORY     - 19930331 GOOD             MSI
 HV8961  HISTORY     - 20010202 GOOD             DMW
 HV8961  HISTORY     - 20010329 GOOD             DMW
 HV8961  HISTORY     - 20040304 GOOD             URS
 HV8961
 HV8961                          STATION DESCRIPTION
 HV8961
 HV8961'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8961'THE STATION IS LOCATED ABOUT 20.2 KM (12.6 MI) ENE OF WASHINGTON D.C.,
 HV8961'6.7 KM (4.2 MI) SW OF BOWIE AND 3.5 KM (2.2 MI) NNE OF LARGO, IN
 HV8961'WOODMORE. TO REACH THE STATION FROM THE BRIDGE WHERE MARYLAND STATE
 HV8961'ROUTE 202 (LANDOVER ROAD) GOES OVER INTERSTATE I-95 (CAPITOL BELTWAY)
 HV8961'IN LANDOVER, GO SOUTHEAST ON ROUTE 202, 1.3 KM (0.8 MI) TO LOTTSFORD
 HV8961'ROAD, TURN LEFT AND GO NORTHEAST 3.3 KM (2.1 MI) TO THE STATION ON
 HV8961'THE LEFT, 9.4 M (30.8 FT) NORTH OF THE CENTERLINE OF LOTTSFORD ROAD
 HV8961'AND 32.0 M (105.0 FT) WEST OF THE CENTERLINE OF ENTERPRISE
 HV8961'ROAD. OWNERSHIP--COUNTY ROAD RIGHT-OF-WAY THE STATION MARK IS A
 HV8961'STANDARD WSSC BRASS DISK STAMPED 19950 SET IN THE TOP OF A ROUND
 HV8961'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH IN THE
 HV8961'GRASS. IT IS 22.12 M (72.57 FT) WSW OF A CUT NAIL IN THE SOUTH SIDE
 HV8961'OF A POTOMAC ELECTRIC POWER COMPANY POLE WITH NO NUMBER AND 22.43 M
 HV8961'(73.59 FT) EAST OF THE NORTHEAST CORNER OF A CONCRETE STORM DRAIN
 HV8961'CATCH BASIN. NO REFERENCE MARKS WERE ESTABLISHED AT THIS TIME. NO
 HV8961'STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 HV8961
 HV8961                          STATION RECOVERY (1993)
 HV8961
 HV8961'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV8961'RECOVERED IN GOOD CONDITION.
 HV8961
 HV8961                          STATION RECOVERY (2001)
 HV8961
 HV8961'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 HV8961'RECOVERY NOTE
 HV8961'STATION FOUND IN GOOD CONDITION 2/2001
 HV8961
 HV8961                          STATION RECOVERY (2001)
 HV8961
 HV8961'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 HV8961'RECOVERED IN GOOD CONDITION.
 HV8961
 HV8961                          STATION RECOVERY (2004)
 HV8961
 HV8961'RECOVERY NOTE BY URS COMPANY 2004
 HV8961'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8962 ***********************************************************************
 HV8962  DESIGNATION -  19951
 HV8962  PID         -  HV8962
 HV8962  STATE/COUNTY-  MD/MONTGOMERY
 HV8962  COUNTRY     -  US
 HV8962  USGS QUAD   -  WASHINGTON WEST (2016)
 HV8962
 HV8962                         *CURRENT SURVEY CONTROL
 HV8962  ______________________________________________________________________
 HV8962* NAD 83(2011) POSITION- 38 59 36.12149(N) 077 03 50.83314(W)   ADJUSTED
 HV8962* NAD 83(2011) ELLIP HT-    25.318 (meters)        (06/27/12)   ADJUSTED
 HV8962* NAD 83(2011) EPOCH   -  2010.00
 HV8962* NAVD 88 ORTHO HEIGHT -    57.4   (meters)      188.    (feet) VERTCON3
 HV8962  ______________________________________________________________________
 HV8962  GEOID HEIGHT    -        -31.921 (meters)                     GEOID18
 HV8962  NAD 83(2011) X  -  1,111,201.005 (meters)                     COMP
 HV8962  NAD 83(2011) Y  - -4,837,834.835 (meters)                     COMP
 HV8962  NAD 83(2011) Z  -  3,991,760.670 (meters)                     COMP
 HV8962  LAPLACE CORR    -         -2.94  (seconds)                    DEFLEC18
 HV8962
 HV8962  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8962  Standards:
 HV8962         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8962            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8962  -------------------------------------------------------------------
 HV8962  NETWORK    1.13   2.39           0.51   0.39   1.22      0.25214517
 HV8962  -------------------------------------------------------------------
 HV8962  Click here for local accuracies and other accuracy information.
 HV8962
 HV8962.The horizontal coordinates were established by GPS observations
 HV8962.and adjusted by the National Geodetic Survey in June 2012.
 HV8962
 HV8962.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8962.been affixed to the stable North American tectonic plate. See 
 HV8962.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8962
 HV8962.The horizontal coordinates are valid at the epoch date displayed above
 HV8962.which is a decimal equivalence of Year/Month/Day.
 HV8962
 HV8962.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8962.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8962
 HV8962.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8962.GEOID18 height accuracy estimate available here.
 HV8962
 HV8962.Click photographs - Photos may exist for this station.
 HV8962
 HV8962.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8962
 HV8962.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8962
 HV8962.The ellipsoidal height was determined by GPS observations
 HV8962.and is referenced to NAD 83.
 HV8962
 HV8962. The following values were computed from the NAD 83(2011) position.
 HV8962
 HV8962;                    North         East     Units Scale Factor Converg.
 HV8962;SPC MD       -   147,271.838   394,445.236   MT  0.99995195   -0 02 24.9
 HV8962;SPC MD       -   483,174.36  1,294,109.08   sFT  0.99995195   -0 02 24.9
 HV8962;UTM  18      - 4,318,067.123   321,239.379   MT  0.99999349   -1 17 56.9
 HV8962
 HV8962!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8962!SPC MD       -   0.99999603  x   0.99995195  =   0.99994798
 HV8962!UTM  18      -   0.99999603  x   0.99999349  =   0.99998952
 HV8962
 HV8962_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2123918067(NAD 83)
 HV8962
 HV8962                          SUPERSEDED SURVEY CONTROL
 HV8962
 HV8962  NAD 83(2007)-  38 59 36.12192(N)    077 03 50.83394(W) AD(2002.00) 0
 HV8962  ELLIP H (02/10/07)   25.331  (m)                       GP(2002.00)    
 HV8962  ELLIP H (08/30/02)   25.328  (m)                       GP(       ) 4 2
 HV8962  NAD 83(1991)-  38 59 36.12241(N)    077 03 50.83462(W) AD(       ) 1
 HV8962  ELLIP H (01/27/92)   25.276  (m)                       GP(       ) 4 1
 HV8962  NAD 83(1986)-  38 59 36.12111(N)    077 03 50.84524(W) AD(       ) 1
 HV8962  NGVD 29 (03/05/91)   57.6    (m)  OSU 89B  model used  GPS OBS        
 HV8962
 HV8962.Superseded values are not recommended for survey control.
 HV8962
 HV8962.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8962.See file dsdata.pdf to determine how the superseded data were derived.
 HV8962
 HV8962_MARKER: DD = SURVEY DISK
 HV8962_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8962_STAMPING: 19951
 HV8962_MARK LOGO: WSSC
 HV8962_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8962_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8962+STABILITY: SURFACE MOTION
 HV8962_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8962+SATELLITE: SATELLITE OBSERVATIONS - August 26, 2002
 HV8962
 HV8962  HISTORY     - Date     Condition        Report By
 HV8962  HISTORY     - 1990     MONUMENTED       WSSC
 HV8962  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV8962  HISTORY     - 20020826 GOOD             INDIV
 HV8962  HISTORY     - 20021203 MARK NOT FOUND   POWELL
 HV8962
 HV8962                          STATION DESCRIPTION
 HV8962
 HV8962'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8962'THE STATION IS LOCATED ABOUT 10.8 KM (6.7 MI) NNW OF WASHINGTON D.C.,
 HV8962'5.2 KM (3.2 MI) WEST OF SILVER SPRING, 12.3 KM (7.6 MI) SOUTHEAST OF
 HV8962'ROCKVILLE, ALONG ROCK CREEK REGIONAL PARK. TO REACH THE STATION FROM
 HV8962'WHERE MARYLAND STATE ROUTE 185 (CONNECTICUT AVENUE) GOES UNDER
 HV8962'INTERSTATE I-95 (CAPITOL BELTWAY) IN KENSINGTON GO SOUTH ON RT 185,
 HV8962'1.9 KM (1.2 MI) TO MARYLAND STATE ROUTE 410 (EAST WEST HIGHWAY), TURN
 HV8962'LEFT AND GO 1.3 KM (0.8 MI) TO THE STATION ON THE LEFT, 13.8 M
 HV8962'(45.3 FT) NORTH OF THE CENTERLINE OF ROUTE 410 AND 38.0 M (124.7 FT)
 HV8962'WEST OF THE CENTERLINE OF JONES MILL ROAD. OWNERSHIP--PARK
 HV8962'PROPERTY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED 19951
 HV8962'SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 HV8962'DIAMETER SET FLUSH IN THE GRASS. IT IS 14.12 M (46.33 FT) SSW OF A
 HV8962'CUT NAIL IN THE EAST SIDE OF A 0.4 M (1.3 FT) CHERRY, 29.23 M
 HV8962'(95.90 FT) SOUTHWEST OF A CUT NAIL IN THE SOUTHEAST SIDE OF A 0.85 M
 HV8962'(2.79 FT) OAK, 21.54 M (70.67 FT) WSW OF A CUT NAIL IN THE SOUTH SIDE
 HV8962'OF A 0.15 M (0.49 FT) DOGWOOD AND 9.57 M (31.40 FT) SOUTHEAST OF THE
 HV8962'SOUTHEAST FACE OF A 0.05 M (0.16 FT) CHERRY. NO REFERENCE MARKS WERE
 HV8962'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 HV8962'STATION AT THIS TIME.
 HV8962
 HV8962                          STATION RECOVERY (2000)
 HV8962
 HV8962'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV8962'MARK NOT FOUND.
 HV8962
 HV8962                          STATION RECOVERY (2002)
 HV8962
 HV8962'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (BAP)
 HV8962'RECOVERED IN GOOD CONDITION.
 HV8962
 HV8962                          STATION RECOVERY (2002)
 HV8962
 HV8962'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 HV8962'MARKER SEEMS TO HAVE BEEN COVERD BY A CONCRETE SIDEWALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8963 ***********************************************************************
 HV8963  DESIGNATION -  19952
 HV8963  PID         -  HV8963
 HV8963  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8963  COUNTRY     -  US
 HV8963  USGS QUAD   -  ANACOSTIA (2016)
 HV8963
 HV8963                         *CURRENT SURVEY CONTROL
 HV8963  ______________________________________________________________________
 HV8963* NAD 83(2011) POSITION- 38 51 17.54113(N) 076 57 27.98372(W)   ADJUSTED
 HV8963* NAD 83(2011) ELLIP HT-    31.481 (meters)        (06/27/12)   ADJUSTED
 HV8963* NAD 83(2011) EPOCH   -  2010.00
 HV8963* NAVD 88 ORTHO HEIGHT -    63.7   (meters)      209.    (feet) GPS OBS
 HV8963  ______________________________________________________________________
 HV8963  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV8963  GEOID HEIGHT    -        -32.640 (meters)                     GEOID93
 HV8963  GEOID HEIGHT    -        -32.274 (meters)                     GEOID18
 HV8963  NAD 83(2011) X  -  1,122,359.646 (meters)                     COMP
 HV8963  NAD 83(2011) Y  - -4,845,179.387 (meters)                     COMP
 HV8963  NAD 83(2011) Z  -  3,979,803.195 (meters)                     COMP
 HV8963  LAPLACE CORR    -         -3.72  (seconds)                    DEFLEC18
 HV8963
 HV8963  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8963  Standards:
 HV8963         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8963            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8963  -------------------------------------------------------------------
 HV8963  NETWORK    0.89   1.88           0.38   0.35   0.96      0.03713384
 HV8963  -------------------------------------------------------------------
 HV8963  Click here for local accuracies and other accuracy information.
 HV8963
 HV8963.The horizontal coordinates were established by GPS observations
 HV8963.and adjusted by the National Geodetic Survey in June 2012.
 HV8963
 HV8963.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8963.been affixed to the stable North American tectonic plate. See 
 HV8963.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8963
 HV8963.The horizontal coordinates are valid at the epoch date displayed above
 HV8963.which is a decimal equivalence of Year/Month/Day.
 HV8963
 HV8963.The orthometric height was determined by GPS observations and a
 HV8963.high-resolution geoid model.
 HV8963
 HV8963.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8963.GEOID18 height accuracy estimate available here.
 HV8963
 HV8963.Click photographs - Photos may exist for this station.
 HV8963
 HV8963.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8963
 HV8963.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8963
 HV8963.The ellipsoidal height was determined by GPS observations
 HV8963.and is referenced to NAD 83.
 HV8963
 HV8963. The following values were computed from the NAD 83(2011) position.
 HV8963
 HV8963;                    North         East     Units Scale Factor Converg.
 HV8963;SPC MD       -   131,896.659   403,665.228   MT  0.99994991   +0 01 35.4
 HV8963;SPC MD       -   432,730.96  1,324,358.34   sFT  0.99994991   +0 01 35.4
 HV8963;SPC VA N     - 2,133,015.011 3,633,857.983   MT  0.99995694   +0 57 45.1
 HV8963;SPC VA N     - 6,998,066.75 11,922,082.40   sFT  0.99995694   +0 57 45.1
 HV8963;UTM  18      - 4,302,493.026   330,120.099   MT  0.99995538   -1 13 42.6
 HV8963
 HV8963!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8963!SPC MD       -   0.99999506  x   0.99994991  =   0.99994497
 HV8963!SPC VA N     -   0.99999506  x   0.99995694  =   0.99995200
 HV8963!UTM  18      -   0.99999506  x   0.99995538  =   0.99995044
 HV8963
 HV8963_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3012002493(NAD 83)
 HV8963
 HV8963                          SUPERSEDED SURVEY CONTROL
 HV8963
 HV8963  NAD 83(2007)-  38 51 17.54164(N)    076 57 27.98446(W) AD(2002.00) 0
 HV8963  ELLIP H (02/10/07)   31.488  (m)                       GP(2002.00)    
 HV8963  ELLIP H (08/30/02)   31.489  (m)                       GP(       ) 4 2
 HV8963  NAD 83(1993)-  38 51 17.54198(N)    076 57 27.98505(W) AD(       ) 1
 HV8963  ELLIP H (11/14/94)   31.465  (m)                       GP(       ) 4 2
 HV8963  NAD 83(1991)-  38 51 17.54219(N)    076 57 27.98522(W) AD(       ) 1
 HV8963  ELLIP H (01/27/92)   31.432  (m)                       GP(       ) 4 1
 HV8963  NAD 83(1986)-  38 51 17.54075(N)    076 57 27.99586(W) AD(       ) 1
 HV8963  NGVD 29 (03/05/91)   64.0    (m)  OSU 89B  model used  GPS OBS        
 HV8963
 HV8963.Superseded values are not recommended for survey control.
 HV8963
 HV8963.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8963.See file dsdata.pdf to determine how the superseded data were derived.
 HV8963
 HV8963_MARKER: DD = SURVEY DISK
 HV8963_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8963_STAMPING: 19952
 HV8963_MARK LOGO: WSSC
 HV8963_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8963_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8963+STABILITY: SURFACE MOTION
 HV8963_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8963+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2012
 HV8963
 HV8963  HISTORY     - Date     Condition        Report By
 HV8963  HISTORY     - 1990     MONUMENTED       WSSC
 HV8963  HISTORY     - 19930331 GOOD             MSI
 HV8963  HISTORY     - 19960924 GOOD             DMW
 HV8963  HISTORY     - 20050514 GOOD             GEOCAC
 HV8963  HISTORY     - 20090825 GOOD             JMTMD
 HV8963  HISTORY     - 20120923 GOOD             WOOLPT
 HV8963
 HV8963                          STATION DESCRIPTION
 HV8963
 HV8963'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8963'THE STATION IS LOCATE ABOUT 8.0 KM (5.0 MI) SOUTHEAST OF WASHINGTON
 HV8963'D.C., 8.8 KM (5.5 MI) NORTHWEST OF ANDREWS AIR FORCE BASE AND 12.0 KM
 HV8963'(7.5 MI) SOUTHWEST OF LARGO IN SUITLAND. TO REACH THE STATION FROM
 HV8963'WHERE MARYLAND STATE ROUTE 5 (BRANCH AVE) GOES UNDER INTERSTATE I-95
 HV8963'(CAPITOL BELTWAY) IN MARLOW HEIGHTS GO NORTHWEST ON RT 5, 5.1 KM
 HV8963'(3.2 MI) TO THE STATION ON THE RIGHT IN FRONT OF KENDALL BAPTIST
 HV8963'CHURCH AT THE WASHINGTON D.C. LINE, 18.0 M (59.1 FT) ENE OF THE
 HV8963'CENTERLINE OF MARYLAND ROUTE 5 AND 23.0 M (75.5 FT) SSE OF THE
 HV8963'CENTERLINE OF SOUTHERN AVENEU. OWNERSHIP--KENDALL BAPTIST CHRUCH THE
 HV8963'STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED 19952 SET IN THE
 HV8963'TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH
 HV8963'IN THE GRASS. IT IS 60.3 M (197.8 FT) SOUTH OF THE SOUTH CORNER OF A
 HV8963'BRICK WALL CHURCH SIGN, 17.54 M (57.55 FT) ESE OF A CUT NAIL IN THE
 HV8963'NORTHEAST SIDE OF A CHESAPEKE AND POTOMAC TELEPHONE POLE NUMBER 5684,
 HV8963'6.99 M (22.93 FT) EAST OF THE CENTERLINE OF THE SOUTHERN MOST OF 2 C
 HV8963'AND P MANHOLES. NO REFERENCE MARKS WERE ESTABLISHED AT THIS TIME. NO
 HV8963'STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 HV8963
 HV8963                          STATION RECOVERY (1993)
 HV8963
 HV8963'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV8963'RECOVERED IN GOOD CONDITION.
 HV8963
 HV8963                          STATION RECOVERY (1996)
 HV8963
 HV8963'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1996 (DMM)
 HV8963'RECOVERED AS DESCRIBED.
 HV8963
 HV8963                          STATION RECOVERY (2005)
 HV8963
 HV8963'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV8963'FOUND AS DESCRIBED, EXCEPT THAT THE DISK IS STAMPED '5756 19952'
 HV8963
 HV8963                          STATION RECOVERY (2009)
 HV8963
 HV8963'RECOVERY NOTE BY JMT ENGINEERING 2009 (GPS)
 HV8963'FD USED FOR GPS STATIC. GPS ORTHO ELEV = 209.1 FT
 HV8963
 HV8963                          STATION RECOVERY (2012)
 HV8963
 HV8963'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 HV8963'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8964 ***********************************************************************
 HV8964  DESIGNATION -  19953
 HV8964  PID         -  HV8964
 HV8964  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8964  COUNTRY     -  US
 HV8964  USGS QUAD   -  UPPER MARLBORO (2016)
 HV8964
 HV8964                         *CURRENT SURVEY CONTROL
 HV8964  ______________________________________________________________________
 HV8964* NAD 83(2011) POSITION- 38 50 51.75883(N) 076 49 46.53020(W)   ADJUSTED
 HV8964* NAD 83(2011) ELLIP HT-    33.946 (meters)        (06/27/12)   ADJUSTED
 HV8964* NAD 83(2011) EPOCH   -  2010.00
 HV8964* NAVD 88 ORTHO HEIGHT -    66.5   (meters)      218.    (feet) GPS OBS
 HV8964  ______________________________________________________________________
 HV8964  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV8964  GEOID HEIGHT    -        -32.970 (meters)                     GEOID93
 HV8964  GEOID HEIGHT    -        -32.609 (meters)                     GEOID18
 HV8964  NAD 83(2011) X  -  1,133,310.487 (meters)                     COMP
 HV8964  NAD 83(2011) Y  - -4,843,143.818 (meters)                     COMP
 HV8964  NAD 83(2011) Z  -  3,979,185.576 (meters)                     COMP
 HV8964  LAPLACE CORR    -         -5.93  (seconds)                    DEFLEC18
 HV8964
 HV8964  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8964  Standards:
 HV8964         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8964            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8964  -------------------------------------------------------------------
 HV8964  NETWORK    0.80   1.69           0.32   0.33   0.86     -0.01281626
 HV8964  -------------------------------------------------------------------
 HV8964  Click here for local accuracies and other accuracy information.
 HV8964
 HV8964.The horizontal coordinates were established by GPS observations
 HV8964.and adjusted by the National Geodetic Survey in June 2012.
 HV8964
 HV8964.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8964.been affixed to the stable North American tectonic plate. See 
 HV8964.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8964
 HV8964.The horizontal coordinates are valid at the epoch date displayed above
 HV8964.which is a decimal equivalence of Year/Month/Day.
 HV8964
 HV8964.The orthometric height was determined by GPS observations and a
 HV8964.high-resolution geoid model.
 HV8964
 HV8964.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8964.GEOID18 height accuracy estimate available here.
 HV8964
 HV8964.Click photographs - Photos may exist for this station.
 HV8964
 HV8964.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8964
 HV8964.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8964
 HV8964.The ellipsoidal height was determined by GPS observations
 HV8964.and is referenced to NAD 83.
 HV8964
 HV8964. The following values were computed from the NAD 83(2011) position.
 HV8964
 HV8964;                    North         East     Units Scale Factor Converg.
 HV8964;SPC MD       -   131,114.613   414,792.699   MT  0.99994997   +0 06 25.0
 HV8964;SPC MD       -   430,165.19  1,360,865.71   sFT  0.99994997   +0 06 25.0
 HV8964;UTM  18      - 4,301,467.488   341,227.582   MT  0.99991042   -1 08 52.3
 HV8964
 HV8964!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8964!SPC MD       -   0.99999467  x   0.99994997  =   0.99994464
 HV8964!UTM  18      -   0.99999467  x   0.99991042  =   0.99990509
 HV8964
 HV8964_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4122701467(NAD 83)
 HV8964
 HV8964                          SUPERSEDED SURVEY CONTROL
 HV8964
 HV8964  NAD 83(2007)-  38 50 51.75922(N)    076 49 46.53108(W) AD(2002.00) 0
 HV8964  ELLIP H (02/10/07)   33.953  (m)                       GP(2002.00)    
 HV8964  ELLIP H (08/30/02)   33.946  (m)                       GP(       ) 4 2
 HV8964  NAD 83(1993)-  38 50 51.75964(N)    076 49 46.53147(W) AD(       ) 1
 HV8964  ELLIP H (11/14/94)   33.931  (m)                       GP(       ) 4 2
 HV8964  NAD 83(1991)-  38 50 51.75987(N)    076 49 46.53214(W) AD(       ) 1
 HV8964  ELLIP H (01/27/92)   33.913  (m)                       GP(       ) 4 1
 HV8964  NAD 83(1986)-  38 50 51.75840(N)    076 49 46.54281(W) AD(       ) 1
 HV8964  NGVD 29 (03/05/91)   66.7    (m)  OSU 89B  model used  GPS OBS        
 HV8964
 HV8964.Superseded values are not recommended for survey control.
 HV8964
 HV8964.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8964.See file dsdata.pdf to determine how the superseded data were derived.
 HV8964
 HV8964_MARKER: DD = SURVEY DISK
 HV8964_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8964_STAMPING: 19953
 HV8964_MARK LOGO: WSSC
 HV8964_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8964_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8964+STABILITY: SURFACE MOTION
 HV8964_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8964+SATELLITE: SATELLITE OBSERVATIONS - May 24, 2001
 HV8964
 HV8964  HISTORY     - Date     Condition        Report By
 HV8964  HISTORY     - 1990     MONUMENTED       WSSC
 HV8964  HISTORY     - 19930331 GOOD             MSI
 HV8964  HISTORY     - 20010524 GOOD             DEWDAV
 HV8964
 HV8964                          STATION DESCRIPTION
 HV8964
 HV8964'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8964'THE STATION IS LOCATED ABOUT 18.2 KM (11.3 MI) ESE OF WASHINGTON D.C.,
 HV8964'6.1 KM (3.8 MI) NORTHEAST OF ANDREWS AIR FORCE BASE, 5.8 KM (3.6 MI)
 HV8964'SOUTH OF LARGO, IN WESTPHALIA. TO REACH THE STATION FROM WHERE
 HV8964'MARYLAND ROUTE 4 (PENNSYLVANIA AVE) GOES UNDER INTERSTATE I-95
 HV8964'(CAPITOL BELTWAY) IN FORESTVILLE GO SOUTHWEST ON ROUTE 4, 0.5 KM
 HV8964'(0.3 MI) TO WESTPHALIA ROAD, TURN LEFT AND GO 3.3 KM (2.1 MI) TO THE
 HV8964'STATION ON THE LEFT, 15.7 M (51.5 FT) NORTH OF THE CENTERLINE OF
 HV8964'WESTPHALIA ROAD AND 14.5 M (47.6 FT) EAST OF THE CENTERLINE OF
 HV8964'MATAPEAKE DRIVE. OWNERSHIP--COUNTY ROAD RIGHT-OF-WAY THE STATION MARK
 HV8964'IS A STANDARD WSSC BRASS DISK STAMPED 19953 SET IN THE TOP OF A ROUND
 HV8964'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH IN THE
 HV8964'GRASS. IT IS 33.43 M (109.68 FT) EAST OF A CUT NAIL IN THE NORTH SIDE
 HV8964'OF A POTOMAC ELECTRIC POWER COMPANY POLE NO NUMBER, 10.69 M
 HV8964'(35.07 FT) SSE OF A FIRE HYDRANT AND 50.85 M (166.83 FT) WNW OF A CUT
 HV8964'NAIL IN THE SOUTHWEST SIDE OF A PEPCO POLE NUMBER 6033. NO REFERENCE
 HV8964'MARKS WERE ESTABLISHED AT THIS TIME. NO STATION SERVE AS AZIMUTH
 HV8964'MARKS FOR THIS STATION AT THIS TIME.
 HV8964
 HV8964                          STATION RECOVERY (1993)
 HV8964
 HV8964'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV8964'RECOVERED IN GOOD CONDITION.
 HV8964
 HV8964                          STATION RECOVERY (2001)
 HV8964
 HV8964'RECOVERY NOTE BY DEWBERRY DAVIS 2001 (CSW)
 HV8964'BLOCKED TO THE WEST BY PINE TREES
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8965 ***********************************************************************
 HV8965  DESIGNATION -  19954
 HV8965  PID         -  HV8965
 HV8965  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8965  COUNTRY     -  US
 HV8965  USGS QUAD   -  LANHAM (2016)
 HV8965
 HV8965                         *CURRENT SURVEY CONTROL
 HV8965  ______________________________________________________________________
 HV8965* NAD 83(2011) POSITION- 38 56 36.47287(N) 076 46 12.05766(W)   ADJUSTED
 HV8965* NAD 83(2011) ELLIP HT-    16.445 (meters)        (06/27/12)   ADJUSTED
 HV8965* NAD 83(2011) EPOCH   -  2010.00
 HV8965* NAVD 88 ORTHO HEIGHT -    49.1   (meters)      161.    (feet) GPS OBS
 HV8965  ______________________________________________________________________
 HV8965  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV8965  GEOID HEIGHT    -        -33.000 (meters)                     GEOID93
 HV8965  GEOID HEIGHT    -        -32.636 (meters)                     GEOID18
 HV8965  NAD 83(2011) X  -  1,136,815.064 (meters)                     COMP
 HV8965  NAD 83(2011) Y  - -4,835,452.063 (meters)                     COMP
 HV8965  NAD 83(2011) Z  -  3,987,447.838 (meters)                     COMP
 HV8965  LAPLACE CORR    -         -5.57  (seconds)                    DEFLEC18
 HV8965
 HV8965  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8965  Standards:
 HV8965         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8965            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8965  -------------------------------------------------------------------
 HV8965  NETWORK    0.99   2.29           0.42   0.39   1.17      0.05425116
 HV8965  -------------------------------------------------------------------
 HV8965  Click here for local accuracies and other accuracy information.
 HV8965
 HV8965.This mark is at Freeway Airport (W00)
 HV8965
 HV8965.The horizontal coordinates were established by GPS observations
 HV8965.and adjusted by the National Geodetic Survey in June 2012.
 HV8965
 HV8965.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8965.been affixed to the stable North American tectonic plate. See 
 HV8965.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8965
 HV8965.The horizontal coordinates are valid at the epoch date displayed above
 HV8965.which is a decimal equivalence of Year/Month/Day.
 HV8965
 HV8965.The orthometric height was determined by GPS observations and a
 HV8965.high-resolution geoid model.
 HV8965
 HV8965.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8965.GEOID18 height accuracy estimate available here.
 HV8965
 HV8965.Click photographs - Photos may exist for this station.
 HV8965
 HV8965.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8965
 HV8965.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8965
 HV8965.The ellipsoidal height was determined by GPS observations
 HV8965.and is referenced to NAD 83.
 HV8965
 HV8965. The following values were computed from the NAD 83(2011) position.
 HV8965
 HV8965;                    North         East     Units Scale Factor Converg.
 HV8965;SPC MD       -   141,755.364   419,937.523   MT  0.99995054   +0 08 39.6
 HV8965;SPC MD       -   465,075.72  1,377,745.02   sFT  0.99995054   +0 08 39.6
 HV8965;UTM  18      - 4,311,992.386   346,604.137   MT  0.99988975   -1 06 46.0
 HV8965
 HV8965!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8965!SPC MD       -   0.99999742  x   0.99995054  =   0.99994796
 HV8965!UTM  18      -   0.99999742  x   0.99988975  =   0.99988717
 HV8965
 HV8965_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4660411992(NAD 83)
 HV8965
 HV8965                          SUPERSEDED SURVEY CONTROL
 HV8965
 HV8965  NAD 83(2007)-  38 56 36.47317(N)    076 46 12.05847(W) AD(2002.00) 0
 HV8965  ELLIP H (02/10/07)   16.464  (m)                       GP(2002.00)    
 HV8965  ELLIP H (08/30/02)   16.469  (m)                       GP(       ) 4 2
 HV8965  NAD 83(1991)-  38 56 36.47321(N)    076 46 12.05837(W) AD(       ) 1
 HV8965  ELLIP H (01/27/92)   16.409  (m)                       GP(       ) 4 1
 HV8965  NAD 83(1986)-  38 56 36.47158(N)    076 46 12.06908(W) AD(       ) 1
 HV8965  NGVD 29 (03/05/91)   49.3    (m)  OSU 89B  model used  GPS OBS        
 HV8965
 HV8965.Superseded values are not recommended for survey control.
 HV8965
 HV8965.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8965.See file dsdata.pdf to determine how the superseded data were derived.
 HV8965
 HV8965_MARKER: DD = SURVEY DISK
 HV8965_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8965_STAMPING: 19954
 HV8965_MARK LOGO: WSSC
 HV8965_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8965_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8965+STABILITY: SURFACE MOTION
 HV8965_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8965+SATELLITE: SATELLITE OBSERVATIONS - June 04, 2003
 HV8965
 HV8965  HISTORY     - Date     Condition        Report By
 HV8965  HISTORY     - 1990     MONUMENTED       WSSC
 HV8965  HISTORY     - 19930331 GOOD             MSI
 HV8965  HISTORY     - 20030604 GOOD             URS
 HV8965
 HV8965                          STATION DESCRIPTION
 HV8965
 HV8965'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8965'THE STATION IS LOCATED ABOUT 23.2 KM (14.4 MI) ENE OF WASHINGTON D.C.,
 HV8965'3.2 KM (2.0 MI) SOUTHWEST OF BOWIE, 7.0 KM (4.3 MI) NORTHEAST OF
 HV8965'LARGO, IN WOODMORE. TO REACH THE STATION FROM THE BRIDGE WHERE
 HV8965'MARYLAND ROUTE 202 (LANDOVER ROAD) GOES OVER INTERSTATE I-95 (CAPITOL
 HV8965'BELTWAY) IN LANDOVER GO SOUTHEAST ON ROUTE 202, 1.3 KM (0.8 MI) TO
 HV8965'LOTTSFORD ROAD, TURN LEFT AND GO NORTHEAST UNTIL LOTTSFORD ROAD TURNS
 HV8965'INTO WOODMORE ROAD, CONTINUE ON WOODMORE ROAD FOR A TOTAL OF 7.2 KM
 HV8965'(4.5 MI) TO CHURCH ROAD, TURN LEFT AND GO NORTH 3.1 KM (1.9 MI) TO
 HV8965'ENTRANCE ROAD TO FREEWAY AIRPORT, TURN LEFT GO WEST 41.8 M
 HV8965'(137.1 FT) TO STATION ON THE LEFT, 17.0 M (55.8 FT) SOUTH OF THE
 HV8965'CENTERLINE OF THE ENTRANCE ROAD. OWNERSHIP--FREEWAY AIRPORT THE
 HV8965'STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED 19954 SET IN THE
 HV8965'TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH
 HV8965'IN THE GRASS. IT IS 21.17 M (69.46 FT) SOUTHEAST OF A CUT NAIL IN THE
 HV8965'EAST SIDE OF A GENERAL ELECTRIC POWER POLE NUMBER 511776 AND 14.52 M
 HV8965'(47.64 FT) SOUTHWET OF A CUT NAIL IN A G AND E POWER POLE NUMBER
 HV8965'478884. NO REFERENCE MARKS WERE ESTABLISHED AT THIS TIME. NO STATIONS
 HV8965'SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 HV8965
 HV8965                          STATION RECOVERY (1993)
 HV8965
 HV8965'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV8965'RECOVERED IN GOOD CONDITION.
 HV8965
 HV8965                          STATION RECOVERY (2003)
 HV8965
 HV8965'RECOVERY NOTE BY URS COMPANY 2003 (JP)
 HV8965'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6687 ***********************************************************************
 JV6687  DESIGNATION -  19955
 JV6687  PID         -  JV6687
 JV6687  STATE/COUNTY-  MD/MONTGOMERY
 JV6687  COUNTRY     -  US
 JV6687  USGS QUAD   -  SENECA (2016)
 JV6687
 JV6687                         *CURRENT SURVEY CONTROL
 JV6687  ______________________________________________________________________
 JV6687* NAD 83(2011) POSITION- 39 03 17.44878(N) 077 15 23.67518(W)   ADJUSTED
 JV6687* NAD 83(2011) ELLIP HT-    57.690 (meters)        (06/27/12)   ADJUSTED
 JV6687* NAD 83(2011) EPOCH   -  2010.00
 JV6687* NAVD 88 ORTHO HEIGHT -    89.5   (meters)      294.    (feet) GPS OBS
 JV6687  ______________________________________________________________________
 JV6687  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6687  GEOID HEIGHT    -        -32.110 (meters)                     GEOID93
 JV6687  GEOID HEIGHT    -        -31.725 (meters)                     GEOID18
 JV6687  NAD 83(2011) X  -  1,094,002.090 (meters)                     COMP
 JV6687  NAD 83(2011) Y  - -4,837,372.919 (meters)                     COMP
 JV6687  NAD 83(2011) Z  -  3,997,083.486 (meters)                     COMP
 JV6687  LAPLACE CORR    -          1.65  (seconds)                    DEFLEC18
 JV6687
 JV6687  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6687  Standards:
 JV6687         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6687            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6687  -------------------------------------------------------------------
 JV6687  NETWORK    1.22   2.55           0.51   0.49   1.30      0.00244689
 JV6687  -------------------------------------------------------------------
 JV6687  Click here for local accuracies and other accuracy information.
 JV6687
 JV6687.The horizontal coordinates were established by GPS observations
 JV6687.and adjusted by the National Geodetic Survey in June 2012.
 JV6687
 JV6687.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6687.been affixed to the stable North American tectonic plate. See 
 JV6687.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6687
 JV6687.The horizontal coordinates are valid at the epoch date displayed above
 JV6687.which is a decimal equivalence of Year/Month/Day.
 JV6687
 JV6687.The orthometric height was determined by GPS observations and a
 JV6687.high-resolution geoid model.
 JV6687
 JV6687.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6687.GEOID18 height accuracy estimate available here.
 JV6687
 JV6687.Click photographs - Photos may exist for this station.
 JV6687
 JV6687.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6687
 JV6687.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6687
 JV6687.The ellipsoidal height was determined by GPS observations
 JV6687.and is referenced to NAD 83.
 JV6687
 JV6687. The following values were computed from the NAD 83(2011) position.
 JV6687
 JV6687;                    North         East     Units Scale Factor Converg.
 JV6687;SPC MD       -   154,126.015   377,791.910   MT  0.99995472   -0 09 39.7
 JV6687;SPC MD       -   505,661.77  1,239,472.29   sFT  0.99995472   -0 09 39.7
 JV6687;SPC VA N     - 2,154,818.818 3,607,624.388   MT  0.99997746   +0 46 33.8
 JV6687;SPC VA N     - 7,069,601.41 11,836,014.35   sFT  0.99997746   +0 46 33.8
 JV6687;UTM  18      - 4,325,286.408   304,739.520   MT  1.00006949   -1 25 20.1
 JV6687
 JV6687!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6687!SPC MD       -   0.99999095  x   0.99995472  =   0.99994567
 JV6687!SPC VA N     -   0.99999095  x   0.99997746  =   0.99996841
 JV6687!UTM  18      -   0.99999095  x   1.00006949  =   1.00006044
 JV6687
 JV6687_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0473925286(NAD 83)
 JV6687
 JV6687|---------------------------------------------------------------------|
 JV6687| PID    Reference Object                     Distance      Geod. Az  |
 JV6687|                                                           dddmmss.s |
 JV6687| JV6688 19956                               351.461 METERS 25210     |
 JV6687|---------------------------------------------------------------------|
 JV6687
 JV6687                          SUPERSEDED SURVEY CONTROL
 JV6687
 JV6687  NAD 83(2007)-  39 03 17.44901(N)    077 15 23.67590(W) AD(2002.00) 0
 JV6687  ELLIP H (02/10/07)   57.717  (m)                       GP(2002.00)    
 JV6687  ELLIP H (08/30/02)   57.744  (m)                       GP(       ) 4 2
 JV6687  NAD 83(1993)-  39 03 17.44875(N)    077 15 23.67624(W) AD(       ) 1
 JV6687  ELLIP H (11/14/94)   57.658  (m)                       GP(       ) 4 2
 JV6687  NAD 83(1991)-  39 03 17.44860(N)    077 15 23.67722(W) AD(       ) 1
 JV6687  ELLIP H (01/27/92)   57.651  (m)                       GP(       ) 4 1
 JV6687  NAD 83(1986)-  39 03 17.44855(N)    077 15 23.68735(W) AD(       ) 1
 JV6687  NGVD 29 (03/05/91)   89.6    (m)  OSU 89B  model used  GPS OBS        
 JV6687
 JV6687.Superseded values are not recommended for survey control.
 JV6687
 JV6687.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6687.See file dsdata.pdf to determine how the superseded data were derived.
 JV6687
 JV6687_MARKER: DD = SURVEY DISK
 JV6687_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6687_STAMPING: 19955
 JV6687_MARK LOGO: WSSC
 JV6687_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6687_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6687+STABILITY: SURFACE MOTION
 JV6687_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6687+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV6687
 JV6687  HISTORY     - Date     Condition        Report By
 JV6687  HISTORY     - 1990     MONUMENTED       WSSC
 JV6687  HISTORY     - 19930331 GOOD             MSI
 JV6687  HISTORY     - 20030317 GOOD             INDIV
 JV6687  HISTORY     - 20050405 GOOD             USPSQD
 JV6687
 JV6687                          STATION DESCRIPTION
 JV6687
 JV6687'DESCRIBED BY WASH SUBURB SAN COMM 1990
 JV6687'THE STATION IS LOCATED ABOUT 5.8 KM (3.6 MI) NW OF POTOMAC, 7.6 KM
 JV6687'(4.7 MI) SOUTH OF QUINCE ORCHARD AND 7.3 KM (4.5 MI) SE OF SENECA. TO
 JV6687'REACH THE STATION FROM THE INTERSECTION OF ROUTES 189 (FALLS ROAD)
 JV6687'AND 190 (RIVER RD) GO NW ALONG ROUTE 190 5.6 KM (3.5 MI) TO A ROAD
 JV6687'(STONEY CREEK RD) RUNNING TO THE NORTH.  GO NORTH ALONG SAID ROAD 1.1
 JV6687'KM (0.7 MI) TO A ROAD (WETHERFIELD LA) TO THE EAST.  GO EAST ALONG
 JV6687'SAID ROAD 0.3 KM (0.2 MI) TO THE STATION ON THE
 JV6687'RIGHT. OWNERSHIP--COUNTY ROAD RIGHT-OF-WAY THE STATION MARK IS A
 JV6687'STANDARD WSSC BRASS DISK STAMPED 19955 SET IN THE TOP OF A ROUND
 JV6687'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER, RECESSED 0.06 M
 JV6687'(0.20 FT) . IT IS 34.22 M (112.27 FT) WEST OF A LIGHT POLE, 4.26 M
 JV6687'(13.98 FT) NORTH OF THE TOP POINT OF THE END POST OF A WOOD GATEWAY
 JV6687'ON THE EAST SIDE OF A DRIVE WAY TO HOUSE 12600 WETHERFIELD LANE, 7.92
 JV6687'M (25.98 FT) SOUTH OF WETHERFIELD LANE AND 3.05 M (10.01 FT) EAST OF
 JV6687'THE THE DRIVEWAY TO 12060 WETHERFIELD LANE. NO REFERENCES WERE
 JV6687'ESTABLISHED AT THIS TIME. STATION 19956 SERVES AS AN AZIMUTH MARK FOR
 JV6687'THIS STATION.
 JV6687
 JV6687                          STATION RECOVERY (1993)
 JV6687
 JV6687'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV6687'RECOVERED IN GOOD CONDITION.
 JV6687
 JV6687                          STATION RECOVERY (2003)
 JV6687
 JV6687'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (PJT)
 JV6687'RECOVERED AS DESCRIBED
 JV6687
 JV6687                          STATION RECOVERY (2005)
 JV6687
 JV6687'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6687'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6688 ***********************************************************************
 JV6688  DESIGNATION -  19956
 JV6688  PID         -  JV6688
 JV6688  STATE/COUNTY-  MD/MONTGOMERY
 JV6688  COUNTRY     -  US
 JV6688  USGS QUAD   -  SENECA (2016)
 JV6688
 JV6688                         *CURRENT SURVEY CONTROL
 JV6688  ______________________________________________________________________
 JV6688* NAD 83(2011) POSITION- 39 03 13.95812(N) 077 15 37.58984(W)   ADJUSTED
 JV6688* NAD 83(2011) ELLIP HT-    63.008 (meters)        (06/27/12)   ADJUSTED
 JV6688* NAD 83(2011) EPOCH   -  2010.00
 JV6688* NAVD 88 ORTHO HEIGHT -    94.7   (meters)      311.    (feet) VERTCON3
 JV6688  ______________________________________________________________________
 JV6688  GEOID HEIGHT    -        -31.728 (meters)                     GEOID18
 JV6688  NAD 83(2011) X  -  1,093,691.624 (meters)                     COMP
 JV6688  NAD 83(2011) Y  - -4,837,516.891 (meters)                     COMP
 JV6688  NAD 83(2011) Z  -  3,997,003.245 (meters)                     COMP
 JV6688  LAPLACE CORR    -          1.70  (seconds)                    DEFLEC18
 JV6688
 JV6688  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6688  Standards:
 JV6688         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6688            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6688  -------------------------------------------------------------------
 JV6688  NETWORK    2.68   4.04           0.75   1.28   2.06     -0.26368758
 JV6688  -------------------------------------------------------------------
 JV6688  Click here for local accuracies and other accuracy information.
 JV6688
 JV6688.The horizontal coordinates were established by GPS observations
 JV6688.and adjusted by the National Geodetic Survey in June 2012.
 JV6688
 JV6688.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6688.been affixed to the stable North American tectonic plate. See 
 JV6688.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6688
 JV6688.The horizontal coordinates are valid at the epoch date displayed above
 JV6688.which is a decimal equivalence of Year/Month/Day.
 JV6688
 JV6688.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6688.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6688
 JV6688.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6688.GEOID18 height accuracy estimate available here.
 JV6688
 JV6688.Click photographs - Photos may exist for this station.
 JV6688
 JV6688.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6688
 JV6688.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6688
 JV6688.The ellipsoidal height was determined by GPS observations
 JV6688.and is referenced to NAD 83.
 JV6688
 JV6688. The following values were computed from the NAD 83(2011) position.
 JV6688
 JV6688;                    North         East     Units Scale Factor Converg.
 JV6688;SPC MD       -   154,019.323   377,457.051   MT  0.99995466   -0 09 48.5
 JV6688;SPC MD       -   505,311.73  1,238,373.67   sFT  0.99995466   -0 09 48.5
 JV6688;SPC VA N     - 2,154,706.661 3,607,291.311   MT  0.99997733   +0 46 25.1
 JV6688;SPC VA N     - 7,069,233.44 11,834,921.58   sFT  0.99997733   +0 46 25.1
 JV6688;UTM  18      - 4,325,187.101   304,402.355   MT  1.00007111   -1 25 28.7
 JV6688
 JV6688!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6688!SPC MD       -   0.99999011  x   0.99995466  =   0.99994477
 JV6688!SPC VA N     -   0.99999011  x   0.99997733  =   0.99996744
 JV6688!UTM  18      -   0.99999011  x   1.00007111  =   1.00006122
 JV6688
 JV6688_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0440225187(NAD 83)
 JV6688
 JV6688|---------------------------------------------------------------------|
 JV6688| PID    Reference Object                     Distance      Geod. Az  |
 JV6688|                                                           dddmmss.s |
 JV6688| JV6687 19955                               351.461 METERS 07210     |
 JV6688|---------------------------------------------------------------------|
 JV6688
 JV6688                          SUPERSEDED SURVEY CONTROL
 JV6688
 JV6688  NAD 83(2007)-  39 03 13.95836(N)    077 15 37.59056(W) AD(2002.00) 0
 JV6688  ELLIP H (02/10/07)   63.037  (m)                       GP(2002.00)    
 JV6688  ELLIP H (08/30/02)   63.054  (m)                       GP(       ) 4 2
 JV6688  NAD 83(1993)-  39 03 13.95821(N)    077 15 37.59119(W) AD(       ) 1
 JV6688  ELLIP H (11/14/94)   62.971  (m)                       GP(       ) 4 2
 JV6688  NAD 83(1991)-  39 03 13.95797(N)    077 15 37.59200(W) AD(       ) 1
 JV6688  ELLIP H (01/27/92)   62.967  (m)                       GP(       ) 4 1
 JV6688  NAD 83(1986)-  39 03 13.95794(N)    077 15 37.60213(W) AD(       ) 1
 JV6688  NGVD 29 (03/05/91)   94.9    (m)  OSU 89B  model used  GPS OBS        
 JV6688
 JV6688.Superseded values are not recommended for survey control.
 JV6688
 JV6688.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6688.See file dsdata.pdf to determine how the superseded data were derived.
 JV6688
 JV6688_MARKER: DD = SURVEY DISK
 JV6688_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6688_STAMPING: 19956
 JV6688_MARK LOGO: WSSC
 JV6688_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6688_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6688+STABILITY: SURFACE MOTION
 JV6688_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6688+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV6688
 JV6688  HISTORY     - Date     Condition        Report By
 JV6688  HISTORY     - 1990     MONUMENTED       WSSC
 JV6688  HISTORY     - 20030317 GOOD             INDIV
 JV6688  HISTORY     - 20050405 GOOD             USPSQD
 JV6688
 JV6688                          STATION DESCRIPTION
 JV6688
 JV6688'DESCRIBED BY WASH SUBURB SAN COMM 1990
 JV6688'THE STATION IS LOCATED ABOUT 5.8 KM (3.6 MI) NW OF POTOMAC, 7.6 KM
 JV6688'(4.7 MI) SOUTH OF QUINCE ORCHARD AND 7.3 KM (4.5 MI) SE OF SENECA. TO
 JV6688'REACH THE STATION FROM THE INTERSECTION OF ROUTES 189 (FALLS ROAD)
 JV6688'AND 190 (RIVER RD) GO NW ALONG RTE 190 5.6 KM (3.5 MI) TO A ROAD
 JV6688'(STONEY CREEK RD) RUNNING TO THE NORTH.  GO NORTH ALONG SAID ROAD 1.1
 JV6688'KM (0.7 MI) TO THE STATION ON THE RIGHT AT THE SE CORNER OF THE
 JV6688'INTERSECTION OF WETHERFIELD LA. TO THE EAST. OWNERSHIP--COUNTY ROAD
 JV6688'RIGHT-OF-WAY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 JV6688'19956 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 JV6688'DIAMETER, RECESSED 0.06 M (0.20 FT) . IT IS 18.30 M (60.04 FT) SOUTH
 JV6688'OF A POTOMAC ELECTRIC POWER COMPANY POLE NUMBER 725444-8964 AT THE
 JV6688'NORTHEAST CORNER OF THE INTRESECTION OF STONEY CREEK ROAD AND
 JV6688'WETHERFIELD LANE, 21.36 M (70.08 FT) SSE OF A CHESAPEAK AND POTOMAC
 JV6688'TELEPHONE POLE NUMBER 17 ON THE WEST SIDE OF STONEY CREED ROAD AT
 JV6688'WETHERFIELD LANE, 8.65 M (28.38 FT) NORTH OF THE WEST CORNER OF A
 JV6688'SLATE CAP STONE AT THE SOUTHWEST END OF A STONE SIGN FOR STONEY CREEK
 JV6688'KNOLL AT THE SOUTHEAST CORNER ON THE INTERSECTION OF STONEY CREEK
 JV6688'ROAD AND WETHERFIELD LANE, 10.06 M (33.01 FT) ENE OF THE CENTERLINE
 JV6688'OF STONEY CREEK ROAD AND 9.14 M (29.99 FT) SSW OF THE CENTERLINE OF
 JV6688'WETHERFIELD LANE. NO REFERENCES WERE ESTABLISHED AT THIS
 JV6688'TIME. STATION 19955 SERVES AS AN AZIMUTH MARK FOR THIS STATION.
 JV6688
 JV6688                          STATION RECOVERY (2003)
 JV6688
 JV6688'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (PJT)
 JV6688'RECOVERED AS DESCRIBED
 JV6688
 JV6688                          STATION RECOVERY (2005)
 JV6688
 JV6688'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6688'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8966 ***********************************************************************
 HV8966  DESIGNATION -  19957
 HV8966  PID         -  HV8966
 HV8966  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8966  COUNTRY     -  US
 HV8966  USGS QUAD   -  LANHAM (2016)
 HV8966
 HV8966                         *CURRENT SURVEY CONTROL
 HV8966  ______________________________________________________________________
 HV8966* NAD 83(2011) POSITION- 38 57 38.25408(N) 076 46 09.23119(W)   ADJUSTED
 HV8966* NAD 83(2011) ELLIP HT-    26.553 (meters)        (06/27/12)   ADJUSTED
 HV8966* NAD 83(2011) EPOCH   -  2010.00
 HV8966* NAVD 88 ORTHO HEIGHT -    59.1   (meters)      194.    (feet) VERTCON3
 HV8966  ______________________________________________________________________
 HV8966  GEOID HEIGHT    -        -32.615 (meters)                     GEOID18
 HV8966  NAD 83(2011) X  -  1,136,608.996 (meters)                     COMP
 HV8966  NAD 83(2011) Y  - -4,834,278.201 (meters)                     COMP
 HV8966  NAD 83(2011) Z  -  3,988,935.796 (meters)                     COMP
 HV8966  LAPLACE CORR    -         -5.57  (seconds)                    DEFLEC18
 HV8966
 HV8966  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8966  Standards:
 HV8966         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8966            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8966  -------------------------------------------------------------------
 HV8966  NETWORK    1.47   4.06           0.65   0.53   2.07      0.20828363
 HV8966  -------------------------------------------------------------------
 HV8966  Click here for local accuracies and other accuracy information.
 HV8966
 HV8966.The horizontal coordinates were established by GPS observations
 HV8966.and adjusted by the National Geodetic Survey in June 2012.
 HV8966
 HV8966.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8966.been affixed to the stable North American tectonic plate. See 
 HV8966.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8966
 HV8966.The horizontal coordinates are valid at the epoch date displayed above
 HV8966.which is a decimal equivalence of Year/Month/Day.
 HV8966
 HV8966.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8966.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8966
 HV8966.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8966.GEOID18 height accuracy estimate available here.
 HV8966
 HV8966.Click photographs - Photos may exist for this station.
 HV8966
 HV8966.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8966
 HV8966.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8966
 HV8966.The ellipsoidal height was determined by GPS observations
 HV8966.and is referenced to NAD 83.
 HV8966
 HV8966. The following values were computed from the NAD 83(2011) position.
 HV8966
 HV8966;                    North         East     Units Scale Factor Converg.
 HV8966;SPC MD       -   143,660.606   420,000.771   MT  0.99995094   +0 08 41.4
 HV8966;SPC MD       -   471,326.50  1,377,952.53   sFT  0.99995094   +0 08 41.4
 HV8966;UTM  18      - 4,313,895.666   346,709.169   MT  0.99988935   -1 06 45.7
 HV8966
 HV8966!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8966!SPC MD       -   0.99999583  x   0.99995094  =   0.99994677
 HV8966!UTM  18      -   0.99999583  x   0.99988935  =   0.99988518
 HV8966
 HV8966_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4670913895(NAD 83)
 HV8966
 HV8966                          SUPERSEDED SURVEY CONTROL
 HV8966
 HV8966  NAD 83(2007)-  38 57 38.25440(N)    076 46 09.23199(W) AD(2002.00) 0
 HV8966  ELLIP H (02/10/07)   26.576  (m)                       GP(2002.00)    
 HV8966  ELLIP H (08/30/02)   26.578  (m)                       GP(       ) 4 2
 HV8966  NAD 83(1991)-  38 57 38.25437(N)    076 46 09.23192(W) AD(       ) 1
 HV8966  ELLIP H (01/27/92)   26.523  (m)                       GP(       ) 4 1
 HV8966  NAD 83(1986)-  38 57 38.25275(N)    076 46 09.24264(W) AD(       ) 1
 HV8966  NGVD 29 (03/05/91)   59.4    (m)  OSU 89B  model used  GPS OBS        
 HV8966
 HV8966.Superseded values are not recommended for survey control.
 HV8966
 HV8966.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8966.See file dsdata.pdf to determine how the superseded data were derived.
 HV8966
 HV8966_MARKER: DD = SURVEY DISK
 HV8966_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8966_STAMPING: 19957
 HV8966_MARK LOGO: WSSC
 HV8966_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8966_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8966+STABILITY: SURFACE MOTION
 HV8966_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8966+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8966
 HV8966  HISTORY     - Date     Condition        Report By
 HV8966  HISTORY     - 1990     MONUMENTED       WSSC
 HV8966  HISTORY     - 20030604 MARK NOT FOUND   URS
 HV8966
 HV8966                          STATION DESCRIPTION
 HV8966
 HV8966'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8966'THE STATION IS LOCATED ABOUT 24.4 KM (15.2 MI) ENE OF WASHINGTON D.C.,
 HV8966'16.8 KM (10.4 MI) SSE OF LAUREL 17.8 KM (11.1 MI) NORTH OF UPPER
 HV8966'MARLBORO IN BOWIE. TO REACH THE STATION FROM THE INTERSECTION OF
 HV8966'ROUTE 450 (ANNAPOLIS ROAD) AND US ROUTE 3 (CRAIN HIGHWAY) IN BOWIE GO
 HV8966'WEST ON ROUTE 450 5.8 KM (3.6 MI) TO CHURCH ROAD, TURN LEFT AND GO
 HV8966'SOUTH 1.4 KM (0.9 MI) TO A GRAVEL DRIVE, TURN RIGHT AND GO NORTH 21.8
 HV8966'M (71.5 FT) TO THE STATION ON THE RIGHT, 6.5 M (21.3 FT) EAST OF THE
 HV8966'CENTERLINE OF THE GRAVEL DRIVE AND 0.3 M (1.0 FT) WEST OF A WOOD
 HV8966'FENCE. OWNERSHIP--PRIVATE ROAD RIGHT-OF-WAY THE STATION MARK IS A
 HV8966'STANDARD WSSC BRASS DISK STAMPED 19957 SET IN THE TOP OF A ROUND
 HV8966'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH IN THE
 HV8966'GRASS. IT IS 11.14 M (36.55 FT) NORTH OF THE SOUTHWEST CORNER OF THE
 HV8966'WOOD FENCE AND 33.51 M (109.94 FT) NORTHEAST OF A CUT NAIL IN THE
 HV8966'SOUTHEAST SIDE OF GENERAL ELECTRIC POWER POLE NUMBER 49515. NO
 HV8966'REFERENCE MARKS WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS
 HV8966'AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 HV8966
 HV8966                          STATION RECOVERY (2003)
 HV8966
 HV8966'RECOVERY NOTE BY URS COMPANY 2003 (JP)
 HV8966'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8967 ***********************************************************************
 HV8967  DESIGNATION -  19958
 HV8967  PID         -  HV8967
 HV8967  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8967  COUNTRY     -  US
 HV8967  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8967
 HV8967                         *CURRENT SURVEY CONTROL
 HV8967  ______________________________________________________________________
 HV8967* NAD 83(2011) POSITION- 38 56 28.84691(N) 076 53 02.01942(W)   ADJUSTED
 HV8967* NAD 83(2011) ELLIP HT-    -7.015 (meters)        (06/27/12)   ADJUSTED
 HV8967* NAD 83(2011) EPOCH   -  2010.00
 HV8967* NAVD 88 ORTHO HEIGHT -    25.4   (meters)       83.    (feet) VERTCON3
 HV8967  ______________________________________________________________________
 HV8967  GEOID HEIGHT    -        -32.326 (meters)                     GEOID18
 HV8967  NAD 83(2011) X  -  1,127,231.520 (meters)                     COMP
 HV8967  NAD 83(2011) Y  - -4,837,828.171 (meters)                     COMP
 HV8967  NAD 83(2011) Z  -  3,987,250.186 (meters)                     COMP
 HV8967  LAPLACE CORR    -         -5.12  (seconds)                    DEFLEC18
 HV8967
 HV8967  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8967  Standards:
 HV8967         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8967            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8967  -------------------------------------------------------------------
 HV8967  NETWORK    1.29   2.41           0.54   0.50   1.23      0.29682837
 HV8967  -------------------------------------------------------------------
 HV8967  Click here for local accuracies and other accuracy information.
 HV8967
 HV8967.The horizontal coordinates were established by GPS observations
 HV8967.and adjusted by the National Geodetic Survey in June 2012.
 HV8967
 HV8967.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8967.been affixed to the stable North American tectonic plate. See 
 HV8967.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8967
 HV8967.The horizontal coordinates are valid at the epoch date displayed above
 HV8967.which is a decimal equivalence of Year/Month/Day.
 HV8967
 HV8967.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8967.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8967
 HV8967.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8967.GEOID18 height accuracy estimate available here.
 HV8967
 HV8967.Click photographs - Photos may exist for this station.
 HV8967
 HV8967.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8967
 HV8967.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8967
 HV8967.The ellipsoidal height was determined by GPS observations
 HV8967.and is referenced to NAD 83.
 HV8967
 HV8967. The following values were computed from the NAD 83(2011) position.
 HV8967
 HV8967;                    North         East     Units Scale Factor Converg.
 HV8967;SPC MD       -   141,501.498   410,065.618   MT  0.99995050   +0 04 22.3
 HV8967;SPC MD       -   464,242.83  1,345,356.95   sFT  0.99995050   +0 04 22.3
 HV8967;UTM  18      - 4,311,955.171   336,729.450   MT  0.99992826   -1 11 03.6
 HV8967
 HV8967!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8967!SPC MD       -   1.00000110  x   0.99995050  =   0.99995160
 HV8967!UTM  18      -   1.00000110  x   0.99992826  =   0.99992936
 HV8967
 HV8967_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3672911955(NAD 83)
 HV8967
 HV8967                          SUPERSEDED SURVEY CONTROL
 HV8967
 HV8967  NAD 83(2007)-  38 56 28.84720(N)    076 53 02.02018(W) AD(2002.00) 0
 HV8967  ELLIP H (02/10/07)   -6.989  (m)                       GP(2002.00)    
 HV8967  ELLIP H (08/30/02)   -6.985  (m)                       GP(       ) 4 2
 HV8967  NAD 83(1991)-  38 56 28.84703(N)    076 53 02.02026(W) AD(       ) 1
 HV8967  ELLIP H (01/27/92)   -7.042  (m)                       GP(       ) 4 1
 HV8967  NAD 83(1986)-  38 56 28.84548(N)    076 53 02.03091(W) AD(       ) 1
 HV8967  NGVD 29 (03/05/91)   25.6    (m)  OSU 89B  model used  GPS OBS        
 HV8967
 HV8967.Superseded values are not recommended for survey control.
 HV8967
 HV8967.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8967.See file dsdata.pdf to determine how the superseded data were derived.
 HV8967
 HV8967_MARKER: DD = SURVEY DISK
 HV8967_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8967_STAMPING: 19958
 HV8967_MARK LOGO: WSSC
 HV8967_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8967_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8967+STABILITY: SURFACE MOTION
 HV8967_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8967+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8967
 HV8967  HISTORY     - Date     Condition        Report By
 HV8967  HISTORY     - 1990     MONUMENTED       WSSC
 HV8967
 HV8967                          STATION DESCRIPTION
 HV8967
 HV8967'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8967'THE STATION IS LOCATED ABOUT 14.4 KM (8.9 MI) NORTHEAST OF WASHINGTON
 HV8967'D.C., 6.0 KM (3.7 MI) SOUTH OF GREENBELT AND 12.0 WEST OF BOWIE, IN
 HV8967'LANDOVER HILLS. TO REACH THE STATION FROM WHERE ROUTE 450 (ANNAPOLIS
 HV8967'ROAD) GOES UNDER INTERSTATE I-95 (CAPITOL BELTWAY) IN LANHAM, GO 2.4
 HV8967'KM (1.5 MI) SOUTHWEST ON ROUTE 450 TO ARDWICK ARDMORE ROAD, TURN LEFT
 HV8967'AND GO SOUTHEAST 0.2 KM (0.1 MI) TO 75TH AVENUE, TURN RIGHT AND GO
 HV8967'SOUTH UNTIL 75TH AVENUE CHANGES INTO PARKWOOD STREET, CONTINUE ON
 HV8967'PARKWOOD STREET FOR A TOTAL OF 0.9 KM (0.6 MI) TO THE STATION ON THE
 HV8967'LEFT. OWNERSHIP--UNKNOWN THE STATION MARK IS A STANDARD WSSC BRASS
 HV8967'DISK STAMPED 19958 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M
 HV8967'(0.7 FT) IN DIAMETER SET FLUSH IN THE GRASS. IT IS 19.0 M (62.3 FT)
 HV8967'SOUTHEAST OF THE CENTERLINE OF PARKWOOD STREET, 8.4 M (27.6 FT)
 HV8967'NORTHWEST OF A WIRE FENCE ALONG THE WEST BOUND LANE OF U.S. ROUTE 50
 HV8967'(JOHN HANSON HIGHWAY) AND 13.54 M (44.42 FT) EAST OF A CUT NAIL IN
 HV8967'THE NORTH SIDE OF A POTOMAC ELECTRIC POWER COMPANY POWER POLE NUMBER
 HV8967'832403-8949. NO REFERENCE MARKS WERE ESTABLISHED AT THIS TIME. NO
 HV8967'STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8968 ***********************************************************************
 HV8968  DESIGNATION -  19959
 HV8968  PID         -  HV8968
 HV8968  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8968  COUNTRY     -  US
 HV8968  USGS QUAD   -  LANHAM (2016)
 HV8968
 HV8968                         *CURRENT SURVEY CONTROL
 HV8968  ______________________________________________________________________
 HV8968* NAD 83(2011) POSITION- 38 52 37.87596(N) 076 46 20.22465(W)   ADJUSTED
 HV8968* NAD 83(2011) ELLIP HT-     1.540 (meters)        (06/27/12)   ADJUSTED
 HV8968* NAD 83(2011) EPOCH   -  2010.00
 HV8968* NAVD 88 ORTHO HEIGHT -    34.2   (meters)      112.    (feet) VERTCON3
 HV8968  ______________________________________________________________________
 HV8968  GEOID HEIGHT    -        -32.734 (meters)                     GEOID18
 HV8968  NAD 83(2011) X  -  1,137,678.421 (meters)                     COMP
 HV8968  NAD 83(2011) Y  - -4,839,984.539 (meters)                     COMP
 HV8968  NAD 83(2011) Z  -  3,981,713.260 (meters)                     COMP
 HV8968  LAPLACE CORR    -         -5.90  (seconds)                    DEFLEC18
 HV8968
 HV8968  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8968  Standards:
 HV8968         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8968            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8968  -------------------------------------------------------------------
 HV8968  NETWORK    1.38   2.86           0.59   0.53   1.46      0.24800277
 HV8968  -------------------------------------------------------------------
 HV8968  Click here for local accuracies and other accuracy information.
 HV8968
 HV8968.The horizontal coordinates were established by GPS observations
 HV8968.and adjusted by the National Geodetic Survey in June 2012.
 HV8968
 HV8968.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8968.been affixed to the stable North American tectonic plate. See 
 HV8968.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8968
 HV8968.The horizontal coordinates are valid at the epoch date displayed above
 HV8968.which is a decimal equivalence of Year/Month/Day.
 HV8968
 HV8968.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8968.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8968
 HV8968.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8968.GEOID18 height accuracy estimate available here.
 HV8968
 HV8968.Click photographs - Photos may exist for this station.
 HV8968
 HV8968.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8968
 HV8968.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8968
 HV8968.The ellipsoidal height was determined by GPS observations
 HV8968.and is referenced to NAD 83.
 HV8968
 HV8968. The following values were computed from the NAD 83(2011) position.
 HV8968
 HV8968;                    North         East     Units Scale Factor Converg.
 HV8968;SPC MD       -   134,397.610   419,759.208   MT  0.99994985   +0 08 34.5
 HV8968;SPC MD       -   440,936.16  1,377,160.00   sFT  0.99994985   +0 08 34.5
 HV8968;UTM  18      - 4,304,640.750   346,264.565   MT  0.99989104   -1 06 45.4
 HV8968
 HV8968!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8968!SPC MD       -   0.99999976  x   0.99994985  =   0.99994961
 HV8968!UTM  18      -   0.99999976  x   0.99989104  =   0.99989080
 HV8968
 HV8968_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4626404640(NAD 83)
 HV8968
 HV8968                          SUPERSEDED SURVEY CONTROL
 HV8968
 HV8968  NAD 83(2007)-  38 52 37.87630(N)    076 46 20.22545(W) AD(2002.00) 0
 HV8968  ELLIP H (02/10/07)    1.560  (m)                       GP(2002.00)    
 HV8968  ELLIP H (08/30/02)    1.561  (m)                       GP(       ) 4 2
 HV8968  NAD 83(1991)-  38 52 37.87628(N)    076 46 20.22551(W) AD(       ) 1
 HV8968  ELLIP H (01/27/92)    1.510  (m)                       GP(       ) 4 1
 HV8968  NAD 83(1986)-  38 52 37.87470(N)    076 46 20.23618(W) AD(       ) 1
 HV8968  NGVD 29 (03/05/91)   34.5    (m)  OSU 89B  model used  GPS OBS        
 HV8968
 HV8968.Superseded values are not recommended for survey control.
 HV8968
 HV8968.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8968.See file dsdata.pdf to determine how the superseded data were derived.
 HV8968
 HV8968_MARKER: DD = SURVEY DISK
 HV8968_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8968_STAMPING: 19959
 HV8968_MARK LOGO: WSSC
 HV8968_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8968_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8968+STABILITY: SURFACE MOTION
 HV8968_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8968+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8968
 HV8968  HISTORY     - Date     Condition        Report By
 HV8968  HISTORY     - 1990     MONUMENTED       WSSC
 HV8968
 HV8968                          STATION DESCRIPTION
 HV8968
 HV8968'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8968'THE STATION IS LOCATED ABOUT 6.0 KM (3.7 MI) SOUTHEAST OF LARGO, 9.2
 HV8968'KM (5.7 MI) SSW OF BOWIE, 7.0 M (23.0 FT) NNW OF UPPER MARLBORO IN
 HV8968'OAK GROVE. TO REACH THE STATION FROM THE BRIDGE WHERE STATE ROUTE 202
 HV8968'(LANDOVER ROAD) GOES OVER INTERSTATE I-95 (CAPITOL BELTWAY) GO
 HV8968'SOUTHEAST ON ROUTE 202, 8.0 KM (5.0 MI) TO WATKINS PARK DRIVE, TURN
 HV8968'LEFT AND GO NORTHEAST TO OAKGROVE ROAD, CONTINUE ON OAKGROVE ROAD TO
 HV8968'STATION FOR A TOTAL OF 1.1 KM (0.7 MI) TO STATION ON THE LEFT, 8.2 M
 HV8968'(26.9 FT) NORTH OF THE CENTERLINE OF THE ROAD. OWNERSHIP--BEHNKE
 HV8968'NURSURY THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED 19959
 HV8968'SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 HV8968'DIAMETER SET FLUSH IN THE GRASS. IT IS 31.21 M (102.39 FT) WEST OF A
 HV8968'CUT NAIL IN THE SOUTH SIDE OF A POTOMAC ELECTRIC POWER COMPANY POLE
 HV8968'NUMBER 864380-8319, 7.15 M (23.46 FT) WNW OF A CUT NAIL IN THE NORTH
 HV8968'SIDE OF A 0.15 M (0.49 FT) TWIN CHERRY, 6.79 M (22.28 FT) EAST OF A
 HV8968'CUT NAIL IN THE NORTH SIDE OF A 0.15 M (0.49 FT) EASTERN HOPHORN
 HV8968'BEAN, 25.69 M (84.28 FT) ENE OF A CUT NAIL IN THE NORTH SIDE OF A 0.5
 HV8968'M (1.6 FT) HICKORY. NO REFERENCE MARKS WERE ESTABLISHED AT THIS
 HV8968'TIME. NO STATIONS SERVES AS AZIMUTH MARKS FOR THIS STATION AT THIS
 HV8968'TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8969 ***********************************************************************
 HV8969  DESIGNATION -  19960
 HV8969  PID         -  HV8969
 HV8969  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8969  COUNTRY     -  US
 HV8969  USGS QUAD   -  ANACOSTIA (2016)
 HV8969
 HV8969                         *CURRENT SURVEY CONTROL
 HV8969  ______________________________________________________________________
 HV8969* NAD 83(2011) POSITION- 38 50 35.08829(N) 076 55 54.05255(W)   ADJUSTED
 HV8969* NAD 83(2011) ELLIP HT-    56.303 (meters)        (06/27/12)   ADJUSTED
 HV8969* NAD 83(2011) EPOCH   -  2010.00
 HV8969* NAVD 88 ORTHO HEIGHT -    88.6   (meters)      291.    (feet) GPS OBS
 HV8969  ______________________________________________________________________
 HV8969  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV8969  GEOID HEIGHT    -        -32.720 (meters)                     GEOID93
 HV8969  GEOID HEIGHT    -        -32.349 (meters)                     GEOID18
 HV8969  NAD 83(2011) X  -  1,124,756.030 (meters)                     COMP
 HV8969  NAD 83(2011) Y  - -4,845,486.506 (meters)                     COMP
 HV8969  NAD 83(2011) Z  -  3,978,799.220 (meters)                     COMP
 HV8969  LAPLACE CORR    -         -4.29  (seconds)                    DEFLEC18
 HV8969
 HV8969  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8969  Standards:
 HV8969         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8969            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8969  -------------------------------------------------------------------
 HV8969  NETWORK    0.83   1.76           0.35   0.33   0.90      0.02433427
 HV8969  -------------------------------------------------------------------
 HV8969  Click here for local accuracies and other accuracy information.
 HV8969
 HV8969.The horizontal coordinates were established by GPS observations
 HV8969.and adjusted by the National Geodetic Survey in June 2012.
 HV8969
 HV8969.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8969.been affixed to the stable North American tectonic plate. See 
 HV8969.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8969
 HV8969.The horizontal coordinates are valid at the epoch date displayed above
 HV8969.which is a decimal equivalence of Year/Month/Day.
 HV8969
 HV8969.The orthometric height was determined by GPS observations and a
 HV8969.high-resolution geoid model.
 HV8969
 HV8969.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8969.GEOID18 height accuracy estimate available here.
 HV8969
 HV8969.Click photographs - Photos may exist for this station.
 HV8969
 HV8969.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8969
 HV8969.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8969
 HV8969.The ellipsoidal height was determined by GPS observations
 HV8969.and is referenced to NAD 83.
 HV8969
 HV8969. The following values were computed from the NAD 83(2011) position.
 HV8969
 HV8969;                    North         East     Units Scale Factor Converg.
 HV8969;SPC MD       -   130,588.985   405,930.959   MT  0.99995001   +0 02 34.4
 HV8969;SPC MD       -   428,440.69  1,331,791.82   sFT  0.99995001   +0 02 34.4
 HV8969;UTM  18      - 4,301,136.046   332,356.651   MT  0.99994608   -1 12 42.5
 HV8969
 HV8969!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8969!SPC MD       -   0.99999117  x   0.99995001  =   0.99994118
 HV8969!UTM  18      -   0.99999117  x   0.99994608  =   0.99993725
 HV8969
 HV8969_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3235601136(NAD 83)
 HV8969
 HV8969                          SUPERSEDED SURVEY CONTROL
 HV8969
 HV8969  NAD 83(2007)-  38 50 35.08876(N)    076 55 54.05335(W) AD(2002.00) 0
 HV8969  ELLIP H (02/10/07)   56.312  (m)                       GP(2002.00)    
 HV8969  ELLIP H (08/30/02)   56.309  (m)                       GP(       ) 4 2
 HV8969  NAD 83(1993)-  38 50 35.08914(N)    076 55 54.05385(W) AD(       ) 1
 HV8969  ELLIP H (11/14/94)   56.288  (m)                       GP(       ) 4 2
 HV8969  NAD 83(1991)-  38 50 35.08933(N)    076 55 54.05407(W) AD(       ) 1
 HV8969  ELLIP H (01/27/92)   56.267  (m)                       GP(       ) 4 1
 HV8969  NAD 83(1986)-  38 50 35.08787(N)    076 55 54.06473(W) AD(       ) 1
 HV8969  NGVD 29 (03/05/91)   88.9    (m)  OSU 89B  model used  GPS OBS        
 HV8969
 HV8969.Superseded values are not recommended for survey control.
 HV8969
 HV8969.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8969.See file dsdata.pdf to determine how the superseded data were derived.
 HV8969
 HV8969_MARKER: DD = SURVEY DISK
 HV8969_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8969_STAMPING: 19960
 HV8969_MARK LOGO: WSSC
 HV8969_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8969_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8969+STABILITY: SURFACE MOTION
 HV8969_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8969+SATELLITE: SATELLITE OBSERVATIONS - March 31, 1993
 HV8969
 HV8969  HISTORY     - Date     Condition        Report By
 HV8969  HISTORY     - 1990     MONUMENTED       WSSC
 HV8969  HISTORY     - 19930331 GOOD             MSI
 HV8969
 HV8969                          STATION DESCRIPTION
 HV8969
 HV8969'DESCRIBED BY WASH SUBURB SAN COMM 1990
 HV8969'THE STATION IS LOCATED ABOUT 10.6 KM (6.6 MI) SOUTHEAST OF WASHINGTON
 HV8969'D.C., 6.0 KM (3.7 MI) NORTHWEST OF ANDREWS AIR FORCE BASE, 10.4 KM
 HV8969'(6.5 MI) SOUTHWEST OF LARGO IN SUITLAND. TO REACH THE STATION FROM
 HV8969'THE BRIDGE WHERE STATE ROUTE 458 (SILVER HILL ROAD) GOES OVER
 HV8969'SUITLAND PARKWAY, WALK EAST 39 M (128.0 FT) TO THE STATION ON NORTH
 HV8969'SIDE OF SILVER HILL ROAD, 8.0 M (26.2 FT) NORTH OF THE WEST BOUND
 HV8969'LANE OF ROUTE 458. OWNERSHIP--ROAD RIGHT-OF-WAY THE STATION MARK IS A
 HV8969'STANDARD WSSC BRASS DISK STAMPED 19960 SET IN THE TOP OF A ROUND
 HV8969'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH IN THE
 HV8969'GRASS. IT IS 45.34 M (148.75 FT) WEST OF THE FACE OF A METAL TRAFFIC
 HV8969'LIGHT POLE AND 10.53 M (34.55 FT) EAST OF A SQUARE CUT IN THE
 HV8969'NORTHEAST CORNER OF THE BRIDGE WINGWALL. NO REFERENCE MARKS WERE
 HV8969'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 HV8969'STATION AT THIS TIME.
 HV8969
 HV8969                          STATION RECOVERY (1993)
 HV8969
 HV8969'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV8969'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2702 ***********************************************************************
 JV2702  DESIGNATION -  1998
 JV2702  PID         -  JV2702
 JV2702  STATE/COUNTY-  MD/MONTGOMERY
 JV2702  COUNTRY     -  US
 JV2702  USGS QUAD   -  ROCKVILLE (2016)
 JV2702
 JV2702                         *CURRENT SURVEY CONTROL
 JV2702  ______________________________________________________________________
 JV2702* NAD 83(1986) POSITION- 39 05 03.     (N) 077 08 23.     (W)   SCALED
 JV2702* NAVD 88 ORTHO HEIGHT -   123.69  (+/-2cm)      405.8   (feet) VERTCON3
 JV2702  ______________________________________________________________________
 JV2702  GEOID HEIGHT    -        -31.737 (meters)                     GEOID18
 JV2702  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2702
 JV2702.The horizontal coordinates were scaled from a map and have
 JV2702.an estimated accuracy of +/- 6 seconds.
 JV2702
 JV2702.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2702.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2702
 JV2702.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2702.GEOID18 height accuracy estimate available here.
 JV2702
 JV2702.The vertical order pertains to the NGVD 29 superseded value.
 JV2702
 JV2702.Click photographs - Photos may exist for this station.
 JV2702
 JV2702;                    North         East    Units  Estimated Accuracy
 JV2702;SPC MD       -   157,360.      387,910.      MT  (+/- 180 meters Scaled)
 JV2702
 JV2702_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ149282(NAD 83)
 JV2702
 JV2702                          SUPERSEDED SURVEY CONTROL
 JV2702
 JV2702  NGVD 29 (11/26/84)  123.904  (m)          406.51   (f) ADJUSTED    2 0
 JV2702
 JV2702.Superseded values are not recommended for survey control.
 JV2702
 JV2702.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2702.See file dsdata.pdf to determine how the superseded data were derived.
 JV2702
 JV2702_MARKER: B = BOLT
 JV2702_SETTING: 0 = UNSPECIFIED SETTING
 JV2702_SP_SET: IRON PIPE
 JV2702_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2702
 JV2702  HISTORY     - Date     Condition        Report By
 JV2702  HISTORY     - UNK      MONUMENTED       WSSC
 JV2702  HISTORY     - 1939     GOOD             WSSC
 JV2702  HISTORY     - 20020125 MARK NOT FOUND   MDSHA
 JV2702
 JV2702                          STATION DESCRIPTION
 JV2702
 JV2702'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2702'0.3 MI E FROM ROCKVILLE.
 JV2702'ON NORBECK ROAD, AT THE JUNCTION OF A ROAD LEADING NORTHWEST, AND
 JV2702'IN LINE WITH A ROW OF MAPLE TREES.
 JV2702
 JV2702                          STATION RECOVERY (2002)
 JV2702
 JV2702'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV2702'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0397 ***********************************************************************
 HV0397  DESIGNATION -  2
 HV0397  PID         -  HV0397
 HV0397  STATE/COUNTY-  MD/ST MARYS
 HV0397  COUNTRY     -  US
 HV0397  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV0397
 HV0397                         *CURRENT SURVEY CONTROL
 HV0397  ______________________________________________________________________
 HV0397* NAD 83(1986) POSITION- 38 10 41.     (N) 076 24 55.     (W)   SCALED
 HV0397* NAVD 88 ORTHO HEIGHT -    13.641 (meters)       44.75  (feet) ADJUSTED
 HV0397  ______________________________________________________________________
 HV0397  GEOID HEIGHT    -        -34.826 (meters)                     GEOID18
 HV0397  DYNAMIC HEIGHT  -         13.632 (meters)       44.72  (feet) COMP
 HV0397  MODELED GRAVITY -    979,991.2   (mgal)                       NAVD 88
 HV0397
 HV0397  VERT ORDER      -  FIRST     CLASS II
 HV0397
 HV0397.The horizontal coordinates were scaled from a map and have
 HV0397.an estimated accuracy of +/- 6 seconds.
 HV0397
 HV0397.The orthometric height was determined by differential leveling and
 HV0397.adjusted by the NATIONAL GEODETIC SURVEY
 HV0397.in June 1991.
 HV0397
 HV0397.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0397.GEOID18 height accuracy estimate available here.
 HV0397
 HV0397.Click photographs - Photos may exist for this station.
 HV0397
 HV0397.The dynamic height is computed by dividing the NAVD 88
 HV0397.geopotential number by the normal gravity value computed on the
 HV0397.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0397.degrees latitude (g = 980.6199 gals.).
 HV0397
 HV0397.The modeled gravity was interpolated from observed gravity values.
 HV0397
 HV0397;                    North         East    Units  Estimated Accuracy
 HV0397;SPC MD       -    56,930.      451,230.      MT  (+/- 180 meters Scaled)
 HV0397
 HV0397_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH760265(NAD 83)
 HV0397
 HV0397                          SUPERSEDED SURVEY CONTROL
 HV0397
 HV0397  NGVD 29 (11/26/84)   13.932  (m)           45.71   (f) ADJUSTED    1 2
 HV0397
 HV0397.Superseded values are not recommended for survey control.
 HV0397
 HV0397.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0397.See file dsdata.pdf to determine how the superseded data were derived.
 HV0397
 HV0397_MARKER: DD = SURVEY DISK
 HV0397_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV0397_MARK LOGO: CGS+SS
 HV0397_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0397
 HV0397  HISTORY     - Date     Condition        Report By
 HV0397  HISTORY     - 1934     MONUMENTED       MDGS
 HV0397  HISTORY     - 1941     GOOD             CGS
 HV0397  HISTORY     - 1942     GOOD             CGS
 HV0397  HISTORY     - 19910103 MARK NOT FOUND   NGS
 HV0397
 HV0397                          STATION DESCRIPTION
 HV0397
 HV0397'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0397'8 MI SE FROM GREAT MILLS.
 HV0397'ABOUT 8.0 MILES SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0397'OFFICE AT GREAT MILLS, SAINT MARYS COUNTY, IN FRONT OF A LONG
 HV0397'2-STORY HOUSE SOUTHEAST OF THE HIGHWAY, ABOUT 111 FEET SOUTHWEST
 HV0397'OF THE NORTHWEST CORNER OF A 2-STORY FARMHOUSE, ABOUT 103 FEET
 HV0397'SOUTHEAST OF THE SOUTHEAST CORNER OF THE HARRIS TEA HOUSE, 34.2
 HV0397'FEET NORTHEAST OF POWER-TRANSMISSION LINE POLE 422, 14 FEET
 HV0397'NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 3 FEET SOUTHEAST
 HV0397'OF POLE 333, AND 0.7 FOOT SOUTHWEST OF A WHITE WOODEN POST
 HV0397'STENCILED U.S.B.M.  A STATE SURVEY STANDARD DISK, SET IN THE
 HV0397'TOP OF A CONCRETE POST.
 HV0397
 HV0397                          STATION RECOVERY (1942)
 HV0397
 HV0397'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0397'RECOVERED IN GOOD CONDITION.
 HV0397
 HV0397                          STATION RECOVERY (1991)
 HV0397
 HV0397'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV0397'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7296 ***********************************************************************
 HV7296  DESIGNATION -  2
 HV7296  PID         -  HV7296
 HV7296  STATE/COUNTY-  MD/CALVERT
 HV7296  COUNTRY     -  US
 HV7296  USGS QUAD   -  NORTH BEACH (2016)
 HV7296
 HV7296                         *CURRENT SURVEY CONTROL
 HV7296  ______________________________________________________________________
 HV7296* NAD 83(1993) POSITION- 38 39 20.18069(N) 076 31 40.29676(W)   ADJUSTED
 HV7296* NAVD 88 ORTHO HEIGHT -    31.    (meters)      102.    (feet) SCALED
 HV7296  ______________________________________________________________________
 HV7296  GEOID HEIGHT    -        -33.773 (meters)                     GEOID18
 HV7296  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV7296  HORZ ORDER      -  THIRD
 HV7296
 HV7296.The horizontal coordinates were established by classical geodetic methods
 HV7296.and adjusted by the National Geodetic Survey in November 1994.
 HV7296
 HV7296.The orthometric height was scaled from a topographic map.
 HV7296
 HV7296.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7296.GEOID18 height accuracy estimate available here.
 HV7296
 HV7296.Click photographs - Photos may exist for this station.
 HV7296
 HV7296.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7296
 HV7296. The following values were computed from the NAD 83(1993) position.
 HV7296
 HV7296;                    North         East     Units Scale Factor Converg.
 HV7296;SPC MD       -   109,882.364   441,095.358   MT  0.99995719   +0 17 46.8
 HV7296;SPC MD       -   360,505.72  1,447,160.35   sFT  0.99995719   +0 17 46.8
 HV7296;UTM  18      - 4,279,667.252   367,057.455   MT  0.99981764   -0 57 16.2
 HV7296
 HV7296!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7296!SPC MD       -   1.00000047  x   0.99995719  =   0.99995766
 HV7296!UTM  18      -   1.00000047  x   0.99981764  =   0.99981811
 HV7296
 HV7296_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6705779667(NAD 83)
 HV7296
 HV7296                          SUPERSEDED SURVEY CONTROL
 HV7296
 HV7296  NAD 83(1986)-  38 39 20.17844(N)    076 31 40.31046(W) AD(       ) 3
 HV7296  NAD 27      -  38 39 19.73900(N)    076 31 41.47300(W) AD(       ) 3
 HV7296
 HV7296.Superseded values are not recommended for survey control.
 HV7296
 HV7296.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7296.See file dsdata.pdf to determine how the superseded data were derived.
 HV7296
 HV7296_MARKER: DB = BENCH MARK DISK
 HV7296_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV7296+WITH SETTING: PAVEMENT
 HV7296_SP_SET: GUN PLATFORM
 HV7296_STAMPING: NO 2 1944
 HV7296_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7296+STABILITY: SURFACE MOTION
 HV7296
 HV7296  HISTORY     - Date     Condition        Report By
 HV7296  HISTORY     - 1944     MONUMENTED       CGS
 HV7296  HISTORY     - 1960     SEE DESCRIPTION  CGS
 HV7296
 HV7296                          STATION DESCRIPTION
 HV7296
 HV7296'DESCRIBED BY COAST AND GEODETIC SURVEY 1944 (TBR)
 HV7296'STATION IS A BRONZE DISK STAMPED NO 2 1944.  IT IS ON GUN PLATFORM
 HV7296'BETWEEN BUILDINGS 3 AND 4 AT NAVAL RESEARCH LABORATORY, CHESAPEAKE
 HV7296'BEACH.
 HV7296'
 HV7296'HALF-TIDE LEVEL (APPROXIMATE SEA LEVEL) ELEVATION 91.41 FEET.
 HV7296
 HV7296                          STATION RECOVERY (1960)
 HV7296
 HV7296'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7296'STATION DESTROYED.  OFFICIALS AT THE NAVY BASE SAID STATION WAS
 HV7296'REMOVED DUE TO CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3943 ***********************************************************************
 JU3943  DESIGNATION -  2
 JU3943  PID         -  JU3943
 JU3943  STATE/COUNTY-  MD/CECIL
 JU3943  COUNTRY     -  US
 JU3943  USGS QUAD   -  NORTH EAST (2016)
 JU3943
 JU3943                         *CURRENT SURVEY CONTROL
 JU3943  ______________________________________________________________________
 JU3943* NAD 83(1991) POSITION- 39 30 17.72226(N) 075 54 03.37049(W)   ADJUSTED
 JU3943* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3943  ______________________________________________________________________
 JU3943  GEOID HEIGHT    -        -33.322 (meters)                     GEOID18
 JU3943  LAPLACE CORR    -         -0.88  (seconds)                    DEFLEC18
 JU3943  HORZ ORDER      -  THIRD
 JU3943
 JU3943.The horizontal coordinates were established by classical geodetic methods
 JU3943.and adjusted by the National Geodetic Survey in January 1992.
 JU3943
 JU3943.The orthometric height was scaled from a topographic map.
 JU3943
 JU3943.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3943.GEOID18 height accuracy estimate available here.
 JU3943
 JU3943.Click photographs - Photos may exist for this station.
 JU3943
 JU3943.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3943
 JU3943. The following values were computed from the NAD 83(1991) position.
 JU3943
 JU3943;                    North         East     Units Scale Factor Converg.
 JU3943;SPC MD       -   204,630.505   494,526.230   MT  1.00001007   +0 41 23.3
 JU3943;SPC MD       -   671,358.58  1,622,458.14   sFT  1.00001007   +0 41 23.3
 JU3943;UTM  18      - 4,373,198.264   422,543.239   MT  0.99967387   -0 34 23.4
 JU3943
 JU3943!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3943!SPC MD       -   1.00000511  x   1.00001007  =   1.00001518
 JU3943!UTM  18      -   1.00000511  x   0.99967387  =   0.99967898
 JU3943
 JU3943:                Primary Azimuth Mark                     Grid Az
 JU3943:SPC MD       -  D 2                                      303 35 18.5
 JU3943:UTM  18      -  D 2                                      304 51 05.2
 JU3943
 JU3943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2254373198(NAD 83)
 JU3943
 JU3943|---------------------------------------------------------------------|
 JU3943| PID    Reference Object                     Distance      Geod. Az  |
 JU3943|                                                           dddmmss.s |
 JU3943| JU3922 COURTHOUSE POINT LIGHT              APPROX. 1.7 KM 0553149.1 |
 JU3943| JU3944 TOWN POINT CHANNEL E FT RNG LT      APPROX. 1.6 KM 0590750.4 |
 JU3943| JU3945 TOWN POINT CHANNEL E R RNG LT       APPROX. 1.7 KM 0601858.1 |
 JU3943| CB1160 2 RM 1                               41.758 METERS 06505     |
 JU3943| CB1161 2 RM 2                               23.973 METERS 15337     |
 JU3943| CB1162 2 RM 3                               31.882 METERS 18755     |
 JU3943| CB1163 2 RM 4                               16.459 METERS 22738     |
 JU3943| JU3956 OLD TOWN POINT WHARF LIGHT          APPROX. 1.3 KM 2601939.7 |
 JU3943| JU3936 ARNOLD POINT CHAN FRONT RNG LT      APPROX. 1.2 KM 2933027.6 |
 JU3943| JU3937 D 2                                 APPROX. 2.1 KM 3041641.8 |
 JU3943| JU3928 ARNOLD POINT CHAN REAR RNG LT       APPROX. 1.2 KM 3383817.3 |
 JU3943|---------------------------------------------------------------------|
 JU3943
 JU3943                          SUPERSEDED SURVEY CONTROL
 JU3943
 JU3943  NAD 83(1986)-  39 30 17.71502(N)    075 54 03.37788(W) AD(       ) 3
 JU3943  NAD 27      -  39 30 17.31600(N)    075 54 04.59800(W) AD(       ) 3
 JU3943
 JU3943.Superseded values are not recommended for survey control.
 JU3943
 JU3943.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3943.See file dsdata.pdf to determine how the superseded data were derived.
 JU3943
 JU3943_MARKER: DD = SURVEY DISK
 JU3943_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3943_STAMPING: NO. 2
 JU3943_MARK LOGO: USACE
 JU3943_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3943+STABILITY: SURFACE MOTION
 JU3943
 JU3943  HISTORY     - Date     Condition        Report By
 JU3943  HISTORY     - 1937     MONUMENTED       USACE
 JU3943  HISTORY     - 1938     GOOD             CGS
 JU3943  HISTORY     - 1984     GOOD             USPSQD
 JU3943
 JU3943                          STATION DESCRIPTION
 JU3943
 JU3943'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3943'LOCATED ON THE S SIDE OF ELK RIVER NEAR THE E EDGE OF PORT HERMAN
 JU3943'ON TOWN POINT NECK.  IT IS 2.4 METERS INSHORE ON THE LAWN OF A
 JU3943'LARGE SUMMER HOME.
 JU3943'
 JU3943'THE STATION IS MARKED BY A STANDARD U.S.E. DISK STAMPED NO.2 SET
 JU3943'ATOP A 6-INCH SQUARE CONCRETE POST AND PROJECTS 3 INCHES ABOVE
 JU3943'GROUND.
 JU3943'
 JU3943'THE REFERENCE MARKS ARE STANDARD U.S.E. DISKS SET ATOP CONCRETE
 JU3943'POSTS.
 JU3943
 JU3943                          STATION RECOVERY (1938)
 JU3943
 JU3943'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3943'STATION AND REFERENCE MARKS NOS.1 AND 4 WERE RECOVERED IN GOOD
 JU3943'CONDITION.
 JU3943'
 JU3943'STATION IS LOCATED 5 MILES SW OF CHESAPEAKE CITY ON THE S SIDE
 JU3943'OF ELK RIVER ON TOWN POINT NECK NEAR THE E EDGE OF PORT
 JU3943'HERMAN.  STATION MARK IS ON THE LAWN OF A LARGE SUMMER HOME, 2.4
 JU3943'METERS SE OF A ROCK BULKHEAD, 12.8 METERS SW OF THE INSHORE END
 JU3943'OF A DOCK AND 4 METERS NE OF A LONE 8-INCH SHADE TREE.
 JU3943'
 JU3943'STATION MARK IS A STANDARD U.S.E. DISK ATOP A 6-INCH SQUARE
 JU3943'CONCRETE POST PROJECTING 3 INCHES ABOVE GROUND.
 JU3943'
 JU3943'REFERENCE MARK NO.1 IS 41.35 METERS ENE OF THE STATION MARK NEAR
 JU3943'A CORNER OF THE CONCRETE BULKHEAD ALONG THE NE SHORE.  MARK IS A
 JU3943'STANDARD U.S.E. REFERENCE DISK ATOP THE CONCRETE
 JU3943'BULKHEAD.  REFERENCE MARK NO.4 IS 16.50 METERS WSW OF THE STATION
 JU3943'MARK AND 1.0 METER SE OF THE ROCK BULKHEAD.  MARK IS A STANDARD
 JU3943'U.S.E.D. REFERENCE DISK ATOP A 6-INCH SQUARE CONCRETE
 JU3943'POST.  REFERENCE MARKS NOS.2 AND 3 COULD NOT BE FOUND.
 JU3943'
 JU3943'TO REACH THE STATION FROM THE CANAL BRIDGE IN CHESAPEAKE CITY,
 JU3943'FOLLOW U.S. HIGHWAY 213, S 3.8 MILES.  TAKE RIGHT FORK AT SIGN TO
 JU3943'PORT HERMAN.  GO 2.9 MILES, TURN RIGHT FOR 0.65 MILE.  TURN RIGHT
 JU3943'AGAIN FOR 0.15 MILE TO THE ONLY LARGE WHITE, GREEN ROOFED, SUMMER
 JU3943'HOUSE ON THE LEFT.  THE STATION IS ON THE RIVER SIDE OF THE
 JU3943'HOUSE.
 JU3943
 JU3943                          STATION RECOVERY (1984)
 JU3943
 JU3943'RECOVERY NOTE BY US POWER SQUADRON 1984 (AHJ)
 JU3943'STATION RECOVERED GOOD.
 JU3943'STATION 2 AND REFERENCE MARK NO. 1 WERE RECOVERED IN GOOD
 JU3943'CONDITION.  REFERENCE MARKS NO. 2, 3 AND 4 ARE DEFINITELY NO
 JU3943'LONGER IN EXISTENCE.  LOCATIONS OF NO. 2 AND 3 ARE UNDER EXISTING
 JU3943'BUILDING, AND GROUND WERE NO. 4 WAS LOCATED HAS EVIDENTLY ERODED
 JU3943'AWAY.  STATION 2 MARKER IS FLUSH WITH GROUND.  REFERENCE MARK
 JU3943'NO. 1 IS IN A LOCATION WHICH WILL BE ERODED AWAY WITHIN A FEW
 JU3943'YEARS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6318 ***********************************************************************
 DG6318  DESIGNATION -  2
 DG6318  PID         -  DG6318
 DG6318  STATE/COUNTY-  MD/TALBOT
 DG6318  COUNTRY     -  US
 DG6318  USGS QUAD   -  EASTON (2016)
 DG6318
 DG6318                         *CURRENT SURVEY CONTROL
 DG6318  ______________________________________________________________________
 DG6318* NAD 83(1986) POSITION- 38 46 05.73   (N) 076 05 38.97   (W)   HD_HELD1
 DG6318* NAVD 88 ORTHO HEIGHT -     1.129 (meters)        3.70  (feet) ADJUSTED
 DG6318  ______________________________________________________________________
 DG6318  GEOID HEIGHT    -        -34.648 (meters)                     GEOID18
 DG6318  DYNAMIC HEIGHT  -          1.128 (meters)        3.70  (feet) COMP
 DG6318  MODELED GRAVITY -    980,036.3   (mgal)                       NAVD 88
 DG6318
 DG6318  VERT ORDER      -  SECOND    CLASS I
 DG6318
 DG6318.The horizontal coordinates were determined by differentially corrected
 DG6318.hand held GPS observations or other comparable positioning techniques
 DG6318.and have an estimated accuracy of +/- 3 meters.
 DG6318
 DG6318.The orthometric height was determined by differential leveling and
 DG6318.adjusted by the NATIONAL GEODETIC SURVEY
 DG6318.in September 2004.
 DG6318
 DG6318.No vertical observational check was made to the station.
 DG6318
 DG6318.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6318.GEOID18 height accuracy estimate available here.
 DG6318
 DG6318.Click photographs - Photos may exist for this station.
 DG6318
 DG6318.The dynamic height is computed by dividing the NAVD 88
 DG6318.geopotential number by the normal gravity value computed on the
 DG6318.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6318.degrees latitude (g = 980.6199 gals.).
 DG6318
 DG6318.The modeled gravity was interpolated from observed gravity values.
 DG6318
 DG6318;                    North         East    Units  Estimated Accuracy
 DG6318;SPC MD       -   122,671.6     478,720.0     MT  (+/- 3 meters HH1 GPS) 
 DG6318
 DG6318_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0494591628(NAD 83)
 DG6318
 DG6318                          SUPERSEDED SURVEY CONTROL
 DG6318
 DG6318.No superseded survey control is available for this station.
 DG6318
 DG6318_MARKER: DD = SURVEY DISK
 DG6318_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6318_STAMPING: BM 2 1999
 DG6318_MARK LOGO: USACE
 DG6318_PROJECTION: FLUSH
 DG6318_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6318_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6318+STABILITY: SURFACE MOTION
 DG6318_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6318+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2006
 DG6318
 DG6318  HISTORY     - Date     Condition        Report By
 DG6318  HISTORY     - 1999     MONUMENTED       USACE
 DG6318  HISTORY     - 20000818 GOOD             MDSHA
 DG6318  HISTORY     - 20061129 GOOD             USPSQD
 DG6318
 DG6318                          STATION DESCRIPTION
 DG6318
 DG6318'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 DG6318'THE MARK IS LOCATED ABOUT 4.5 MI (7.24 KM) EAST-NORTHEAST OF NEWCOMB,
 DG6318'4.0 MI (6.44 KM) SOUTHEAST OF UNIONVILLE AND 1.0 MI (1.61 KM)
 DG6318'WEST-SOUTHWEST OF EASTON.  TO REACH THE MARK FROM THE POST OFFICE IN
 DG6318'EASTON, GO WEST ALONG DOVER STREET FOR 0.14 MILES (0.23 KM) TO
 DG6318'WASHINGTON STREET.  TURN LEFT AND GO SOUTH ALONG WASHINGTON STREET FOR
 DG6318'0.12 MILES (0.19 KM) TO PORT STREET.  TURN RIGHT AND GO WEST ALONG
 DG6318'STATE HIGHWAY 334 (PORT STREET) FOR 0.6 MILES (1.0 KM) TO STATE
 DG6318'HIGHWAY 322.  CONTINUE WEST ALONG STATE HIGHWAY 334 FOR 0.42 MILES
 DG6318'(0.68 KM) TO THE MARK ON THE RIGHT.  IT IS 26.0 FEET (7.9 M) NORTH OF
 DG6318'THE CENTER LINE OF THE ROAD, 8.0 FEET (2.4 M) NORTHWEST OF POWER POLE
 DG6318'NUMBER BW-10-156, 19.3 FEET (5.9 M) SOUTHWEST OF THE SOUTHWEST CORNER
 DG6318'OF HOUSE NUMBER 941, 54.7 FEET (16.7 M) NORTHEAST AND ACROSS PORT
 DG6318'STREET FROM POWER POLE NUMER 6-10K AND 3.0 FEET (0.9 M) NORTH OF A
 DG6318'CARSONITE WITNESS POST.  IT IS A USE DISK SET IN THE TOP OF A MASS OF
 DG6318'CONCRETE WHICH IS FLUSH WITH THE GROUND AND ABOUT LEVEL WITH THE ROAD.
 DG6318
 DG6318                          STATION RECOVERY (2006)
 DG6318
 DG6318'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 DG6318'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1210 ***********************************************************************
 JV1210  DESIGNATION -  2 PRR
 JV1210  PID         -  JV1210
 JV1210  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1210  COUNTRY     -  US
 JV1210  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1210
 JV1210                         *CURRENT SURVEY CONTROL
 JV1210  ______________________________________________________________________
 JV1210* NAD 83(1986) POSITION- 39 19 35.     (N) 076 38 16.     (W)   SCALED
 JV1210* NAVD 88 ORTHO HEIGHT -    42.071 (meters)      138.03  (feet) ADJUSTED
 JV1210  ______________________________________________________________________
 JV1210  GEOID HEIGHT    -        -32.583 (meters)                     GEOID18
 JV1210  DYNAMIC HEIGHT  -         42.049 (meters)      137.96  (feet) COMP
 JV1210  MODELED GRAVITY -    980,103.9   (mgal)                       NAVD 88
 JV1210
 JV1210  VERT ORDER      -  SECOND    CLASS 0
 JV1210
 JV1210.The horizontal coordinates were scaled from a map and have
 JV1210.an estimated accuracy of +/- 6 seconds.
 JV1210
 JV1210.The orthometric height was determined by differential leveling and
 JV1210.adjusted by the NATIONAL GEODETIC SURVEY
 JV1210.in June 1991.
 JV1210
 JV1210.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1210.GEOID18 height accuracy estimate available here.
 JV1210
 JV1210.Click photographs - Photos may exist for this station.
 JV1210
 JV1210.The dynamic height is computed by dividing the NAVD 88
 JV1210.geopotential number by the normal gravity value computed on the
 JV1210.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1210.degrees latitude (g = 980.6199 gals.).
 JV1210
 JV1210.The modeled gravity was interpolated from observed gravity values.
 JV1210
 JV1210;                    North         East    Units  Estimated Accuracy
 JV1210;SPC MD       -   184,300.      431,230.      MT  (+/- 180 meters Scaled)
 JV1210
 JV1210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ588542(NAD 83)
 JV1210
 JV1210                          SUPERSEDED SURVEY CONTROL
 JV1210
 JV1210  NGVD 29 (11/26/84)   42.304  (m)          138.79   (f) ADJUSTED    2 0
 JV1210
 JV1210.Superseded values are not recommended for survey control.
 JV1210
 JV1210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1210.See file dsdata.pdf to determine how the superseded data were derived.
 JV1210
 JV1210_MARKER: B = BOLT
 JV1210_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1210_SP_SET: COPING
 JV1210_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1210
 JV1210  HISTORY     - Date     Condition        Report By
 JV1210  HISTORY     - UNK      MONUMENTED       PRR
 JV1210  HISTORY     - 1935     GOOD             CGS
 JV1210
 JV1210                          STATION DESCRIPTION
 JV1210
 JV1210'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1210'AT BALTIMORE.
 JV1210'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, AT MILEPOST 3, WEST
 JV1210'OF JONES FALLS, IN THE TOP OF THE COPING OF A RETAINING WALL,
 JV1210'AND ABOUT 3 FEET ABOVE GROUND.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0206 ***********************************************************************
 JV0206  DESIGNATION -  2 TT 738
 JV0206  PID         -  JV0206
 JV0206  STATE/COUNTY-  MD/HARFORD
 JV0206  COUNTRY     -  US
 JV0206  USGS QUAD   -  BEL AIR (2016)
 JV0206
 JV0206                         *CURRENT SURVEY CONTROL
 JV0206  ______________________________________________________________________
 JV0206* NAD 83(1986) POSITION- 39 32 43.     (N) 076 21 40.     (W)   SCALED
 JV0206* NAVD 88 ORTHO HEIGHT -   125.087 (meters)      410.39  (feet) ADJUSTED
 JV0206  ______________________________________________________________________
 JV0206  GEOID HEIGHT    -        -32.728 (meters)                     GEOID18
 JV0206  DYNAMIC HEIGHT  -        125.023 (meters)      410.18  (feet) COMP
 JV0206  MODELED GRAVITY -    980,120.7   (mgal)                       NAVD 88
 JV0206
 JV0206  VERT ORDER      -  SECOND    CLASS 0
 JV0206
 JV0206.The horizontal coordinates were scaled from a map and have
 JV0206.an estimated accuracy of +/- 6 seconds.
 JV0206
 JV0206.The orthometric height was determined by differential leveling and
 JV0206.adjusted by the NATIONAL GEODETIC SURVEY
 JV0206.in June 1991.
 JV0206
 JV0206.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0206.GEOID18 height accuracy estimate available here.
 JV0206
 JV0206.Click photographs - Photos may exist for this station.
 JV0206
 JV0206.The dynamic height is computed by dividing the NAVD 88
 JV0206.geopotential number by the normal gravity value computed on the
 JV0206.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0206.degrees latitude (g = 980.6199 gals.).
 JV0206
 JV0206.The modeled gravity was interpolated from observed gravity values.
 JV0206
 JV0206;                    North         East    Units  Estimated Accuracy
 JV0206;SPC MD       -   208,730.      454,920.      MT  (+/- 180 meters Scaled)
 JV0206
 JV0206_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ830781(NAD 83)
 JV0206
 JV0206                          SUPERSEDED SURVEY CONTROL
 JV0206
 JV0206  NGVD 29 (11/26/84)  125.332  (m)          411.19   (f) ADJUSTED    2 0
 JV0206
 JV0206.Superseded values are not recommended for survey control.
 JV0206
 JV0206.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0206.See file dsdata.pdf to determine how the superseded data were derived.
 JV0206
 JV0206_MARKER: DD = SURVEY DISK
 JV0206_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0206_STAMPING: 2 TT 738 1956
 JV0206_MARK LOGO: USGS
 JV0206_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0206+STABILITY: SURFACE MOTION
 JV0206
 JV0206  HISTORY     - Date     Condition        Report By
 JV0206  HISTORY     - 1956     MONUMENTED       MDBCSM
 JV0206  HISTORY     - 1960     GOOD             CGS
 JV0206  HISTORY     - 1971     GOOD             NGS
 JV0206  HISTORY     - 19870120 MARK NOT FOUND   USPSQD
 JV0206  HISTORY     - 19891011 MARK NOT FOUND   NGS
 JV0206  HISTORY     - 20010421 MARK NOT FOUND   USPSQD
 JV0206
 JV0206                          STATION DESCRIPTION
 JV0206
 JV0206'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0206'0.7 MI NW FROM BEL AIR.
 JV0206'ABOUT 0.7 MILE NORTHWEST ALONG STATE HIGHWAY 24 FROM THE POST
 JV0206'OFFICE AT BEL AIR, 25 1/2 FEET WEST OF THE CENTER LINE OF ROCK
 JV0206'SPRINGS AVE. (HIGHWAY 24), 44 FEET NORTH OF THE CENTER LINE OF
 JV0206'VALE STREET, 53 1/2 FEET WEST-SOUTHWEST OF AND ACROSS THE
 JV0206'HIGHWAY FROM A MONUMENT WITH INSCRIPTION BEL AIR MEMORIAL GARDENS
 JV0206'1945 PREPETUAL CARE, 7 FEET NORTHWEST OF THE CENTER OF A MANHOLE
 JV0206'COVER, 5 1/2 FEET WEST OF THE WEST CURB OF ROCK SPRINGS AVE.
 JV0206'(HIGHWAY 24), ABOUT LEVEL WITH THE HIGHWAY, AND SET IN TOP OF A
 JV0206'CONCRETE POST FLUSH WITH THE GROUND.
 JV0206
 JV0206                          STATION RECOVERY (1971)
 JV0206
 JV0206'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0206'RECOVERED IN GOOD CONDITION.
 JV0206
 JV0206                          STATION RECOVERY (1987)
 JV0206
 JV0206'RECOVERY NOTE BY US POWER SQUADRON 1987 (RB)
 JV0206'MARK NOT FOUND.
 JV0206
 JV0206                          STATION RECOVERY (1989)
 JV0206
 JV0206'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0206'MARK NOT FOUND.
 JV0206
 JV0206                          STATION RECOVERY (2001)
 JV0206
 JV0206'RECOVERY NOTE BY US POWER SQUADRON 2001 (JB)
 JV0206'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0032 ***********************************************************************
 JV0032  DESIGNATION -  2 W
 JV0032  PID         -  JV0032
 JV0032  STATE/COUNTY-  MD/CECIL
 JV0032  COUNTRY     -  US
 JV0032  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0032
 JV0032                         *CURRENT SURVEY CONTROL
 JV0032  ______________________________________________________________________
 JV0032* NAD 83(1986) POSITION- 39 36 17.50   (N) 076 06 54.61   (W)   HD_HELD1
 JV0032* NAVD 88 ORTHO HEIGHT -     5.805 (meters)       19.05  (feet) ADJUSTED
 JV0032  ______________________________________________________________________
 JV0032  GEOID HEIGHT    -        -33.021 (meters)                     GEOID18
 JV0032  DYNAMIC HEIGHT  -          5.802 (meters)       19.04  (feet) COMP
 JV0032  MODELED GRAVITY -    980,134.2   (mgal)                       NAVD 88
 JV0032
 JV0032  VERT ORDER      -  FIRST     CLASS II
 JV0032
 JV0032.The horizontal coordinates were determined by differentially corrected
 JV0032.hand held GPS observations or other comparable positioning techniques
 JV0032.and have an estimated accuracy of +/- 3 meters.
 JV0032
 JV0032.The orthometric height was determined by differential leveling and
 JV0032.adjusted by the NATIONAL GEODETIC SURVEY
 JV0032.in June 1991.
 JV0032
 JV0032.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0032.GEOID18 height accuracy estimate available here.
 JV0032
 JV0032.Click photographs - Photos may exist for this station.
 JV0032
 JV0032.The dynamic height is computed by dividing the NAVD 88
 JV0032.geopotential number by the normal gravity value computed on the
 JV0032.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0032.degrees latitude (g = 980.6199 gals.).
 JV0032
 JV0032.The modeled gravity was interpolated from observed gravity values.
 JV0032
 JV0032;                    North         East    Units  Estimated Accuracy
 JV0032;SPC MD       -   215,525.7     475,994.0     MT  (+/- 3 meters HH1 GPS) 
 JV0032
 JV0032_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0426184496(NAD 83)
 JV0032
 JV0032                          SUPERSEDED SURVEY CONTROL
 JV0032
 JV0032  NGVD 29 (11/26/84)    6.074  (m)           19.93   (f) ADJUSTED    1 2
 JV0032
 JV0032.Superseded values are not recommended for survey control.
 JV0032
 JV0032.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0032.See file dsdata.pdf to determine how the superseded data were derived.
 JV0032
 JV0032_MARKER: DD = SURVEY DISK
 JV0032_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0032_SP_SET: WALK
 JV0032_STAMPING: NO 2 W 1926
 JV0032_MARK LOGO: USGS
 JV0032_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0032
 JV0032  HISTORY     - Date     Condition        Report By
 JV0032  HISTORY     - 1926     MONUMENTED       USGS
 JV0032  HISTORY     - 1955     GOOD             CGS
 JV0032  HISTORY     - 1979     GOOD             NGS
 JV0032
 JV0032                          STATION DESCRIPTION
 JV0032
 JV0032'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0032'AT PORT DEPOSIT.
 JV0032'AT PORT DEPOSIT, ABOUT 0.2 MILE SOUTHEAST ALONG THE PENNSYLVANIA
 JV0032'RAILROAD FROM THE STATION, THENCE ABOUT 0.05 MILE NORTHEAST ALONG
 JV0032'A STREET LEADING TO POST OFFICE AND BANK BUILDING, 2.8 FEET
 JV0032'NORTHEAST OF WEST CORNER OF SANDSTONE FRONT BUILDING OF CECIL
 JV0032'NATIONAL BANK, IN THE TOP OF SOUTH CORNER OF A 4 1/2-FOOT WIDE
 JV0032'ALLEY WALK BETWEEN BUILDINGS, 18 1/2 FEET NORTHEAST OF NORTHEAST
 JV0032'CURB OF U.S. HIGHWAY 222, 43 FEET SOUTHEAST OF CENTER LINE OF
 JV0032'STATE HIGHWAY 276, AND ABOUT LEVEL WITH THE SIDE WALK.
 JV0032
 JV0032                          STATION RECOVERY (1979)
 JV0032
 JV0032'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0032'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7822 ***********************************************************************
 DR7822  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7822  DESIGNATION -  20
 DR7822  PID         -  DR7822
 DR7822  STATE/COUNTY-  MD/QUEEN ANNES
 DR7822  COUNTRY     -  US
 DR7822  USGS QUAD   -  WYE MILLS (2016)
 DR7822
 DR7822                         *CURRENT SURVEY CONTROL
 DR7822  ______________________________________________________________________
 DR7822* NAD 83(2011) POSITION- 38 56 24.89242(N) 076 00 44.69885(W)   ADJUSTED
 DR7822* NAD 83(2011) ELLIP HT-   -13.155 (meters)        (02/02/22)   ADJUSTED
 DR7822* NAD 83(2011) EPOCH   -  2010.00
 DR7822* NAVD 88 ORTHO HEIGHT -    21.19  (meters)       69.5   (feet) GPS OBS
 DR7822  ______________________________________________________________________
 DR7822  GEOID HEIGHT    -        -34.342 (meters)                     GEOID18
 DR7822  NAD 83(2011) X  -  1,200,699.802 (meters)                     COMP
 DR7822  NAD 83(2011) Y  - -4,820,193.597 (meters)                     COMP
 DR7822  NAD 83(2011) Z  -  3,987,151.478 (meters)                     COMP
 DR7822  LAPLACE CORR    -         -3.95  (seconds)                    DEFLEC18
 DR7822
 DR7822  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7822  Standards:
 DR7822         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7822            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7822  -------------------------------------------------------------------
 DR7822  NETWORK    0.70   1.63           0.31   0.26   0.83     -0.13107288
 DR7822  -------------------------------------------------------------------
 DR7822  Click here for local accuracies and other accuracy information.
 DR7822
 DR7822.The horizontal coordinates were established by GPS observations
 DR7822.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7822
 DR7822.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7822.been affixed to the stable North American tectonic plate. See 
 DR7822.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7822
 DR7822.The horizontal coordinates are valid at the epoch date displayed above
 DR7822.which is a decimal equivalence of Year/Month/Day.
 DR7822
 DR7822.The orthometric height was determined by GPS observations and a
 DR7822.high-resolution geoid model using precise GPS observation and
 DR7822.processing techniques.
 DR7822
 DR7822.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7822.GEOID18 height accuracy estimate available here.
 DR7822
 DR7822.Click photographs - Photos may exist for this station.
 DR7822
 DR7822.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7822
 DR7822.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7822
 DR7822.The ellipsoidal height was determined by GPS observations
 DR7822.and is referenced to NAD 83.
 DR7822
 DR7822. The following values were computed from the NAD 83(2011) position.
 DR7822
 DR7822;                    North         East     Units Scale Factor Converg.
 DR7822;SPC MD       -   141,836.274   485,616.818   MT  0.99995048   +0 37 11.4
 DR7822;SPC MD       -   465,341.18  1,593,227.84   sFT  0.99995048   +0 37 11.4
 DR7822;UTM  18      - 4,310,633.109   412,258.437   MT  0.99969480   -0 38 10.9
 DR7822
 DR7822!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7822!SPC MD       -   1.00000206  x   0.99995048  =   0.99995254
 DR7822!UTM  18      -   1.00000206  x   0.99969480  =   0.99969686
 DR7822
 DR7822_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1225810633(NAD 83)
 DR7822
 DR7822                          SUPERSEDED SURVEY CONTROL
 DR7822
 DR7822.No superseded survey control is available for this station.
 DR7822
 DR7822_MARKER: DD = SURVEY DISK
 DR7822_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7822_STAMPING: 20
 DR7822_MARK LOGO: MD-035
 DR7822_PROJECTION: RECESSED 9 CENTIMETERS
 DR7822_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7822+STABILITY: SURFACE MOTION
 DR7822_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7822+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7822
 DR7822  HISTORY     - Date     Condition        Report By
 DR7822  HISTORY     - UNK      MONUMENTED       MD-035
 DR7822  HISTORY     - 20210309 GOOD             MDSHA
 DR7822
 DR7822                          STATION DESCRIPTION
 DR7822
 DR7822'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7822'THE MARK IS LOCATED ABOUT 3.7 MI (6.0 KM) EAST OF WYE MILLS, 3.5 MI
 DR7822'(5.6 KM) WEST-NORTHWEST OF QUEEN ANNE AND 2.6 MI (4.2 KM) SOUTH OF
 DR7822'STARR.
 DR7822'
 DR7822'TO REACH FROM THE JUNCTION OF US 301 AND MD 213, GO SOUTH ON MD 213
 DR7822'FOR 1.01 MI (1.63 KM) TO AN INTERSECTION.  TURN LEFT AND GO EAST ON MD
 DR7822'309 FOR 4.61 MI (7.42 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DR7822'SOUTHWEST ON FOX MEADOW ROAD FOR 2.25 MI (3.62 KM) TO THE MARK ON THE
 DR7822'RIGHT.
 DR7822'
 DR7822'THE MARK IS 252.2 FT (76.9 M) SOUTH-SOUTHWEST OF THE CENTERLINE OF A
 DR7822'GRAVEL DRIVEWAY OF 730 FOX MEADOW ROAD, 225.3 FT (68.7 M)
 DR7822'SOUTH-SOUTHWEST OF A UTILITY POLE WITH NO NUMBER, 69.2 FT (21.1 M)
 DR7822'NORTH OF A CHOPTANK UTILITY POLE NUMBERED 312-59-530, 23.7 FT (7.2 M)
 DR7822'WEST OF THE CENTERLINE OF FOX MEADOW ROAD, 3.6 FT (1.1 M) SOUTH OF THE
 DR7822'WEST CORNER OF A FOUR FOOT TALL CONCRETE PILLAR AND SET IN THE TOP OF
 DR7822'A 12-IN (30 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2707 ***********************************************************************
 HU2707  DESIGNATION -  20 WDK
 HU2707  PID         -  HU2707
 HU2707  STATE/COUNTY-  MD/WORCESTER
 HU2707  COUNTRY     -  US
 HU2707  USGS QUAD   -  SNOW HILL (2016)
 HU2707
 HU2707                         *CURRENT SURVEY CONTROL
 HU2707  ______________________________________________________________________
 HU2707* NAD 83(1986) POSITION- 38 11 22.6    (N) 075 24 28.9    (W)   HD_HELD2
 HU2707* NAVD 88 ORTHO HEIGHT -     5.754 (meters)       18.88  (feet) ADJUSTED
 HU2707  ______________________________________________________________________
 HU2707  GEOID HEIGHT    -        -36.188 (meters)                     GEOID18
 HU2707  DYNAMIC HEIGHT  -          5.750 (meters)       18.86  (feet) COMP
 HU2707  MODELED GRAVITY -    979,986.1   (mgal)                       NAVD 88
 HU2707
 HU2707  VERT ORDER      -  SECOND    CLASS I
 HU2707
 HU2707.The horizontal coordinates were established by autonomous hand held GPS
 HU2707.observations and have an estimated accuracy of +/- 10 meters.
 HU2707
 HU2707.The orthometric height was determined by differential leveling and
 HU2707.adjusted by the NATIONAL GEODETIC SURVEY
 HU2707.in August 1994.
 HU2707
 HU2707.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2707.GEOID18 height accuracy estimate available here.
 HU2707
 HU2707.Click photographs - Photos may exist for this station.
 HU2707
 HU2707.The dynamic height is computed by dividing the NAVD 88
 HU2707.geopotential number by the normal gravity value computed on the
 HU2707.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2707.degrees latitude (g = 980.6199 gals.).
 HU2707
 HU2707.The modeled gravity was interpolated from observed gravity values.
 HU2707
 HU2707;                    North         East    Units  Estimated Accuracy
 HU2707;SPC MD       -    59,266.      539,462.      MT  (+/- 10 meters HH2 GPS)
 HU2707
 HU2707_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6426826931(NAD 83)
 HU2707
 HU2707                          SUPERSEDED SURVEY CONTROL
 HU2707
 HU2707.No superseded survey control is available for this station.
 HU2707
 HU2707_MARKER: DD = SURVEY DISK
 HU2707_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HU2707_SP_SET: HEADWALL
 HU2707_STAMPING: 20 WDK 1963
 HU2707_MARK LOGO: USGS
 HU2707_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2707_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2707_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2707+SATELLITE: SATELLITE OBSERVATIONS - October 03, 2010
 HU2707
 HU2707  HISTORY     - Date     Condition        Report By
 HU2707  HISTORY     - 1963     MONUMENTED       USGS
 HU2707  HISTORY     - 19900706 GOOD             MDSHA
 HU2707  HISTORY     - 20011006 GOOD             USPSQD
 HU2707  HISTORY     - 20101003 GOOD             NGS
 HU2707
 HU2707                          STATION DESCRIPTION
 HU2707
 HU2707'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HU2707'AT THE INTERSECTION OF STATE HIGHWAYS 354 AND 12 NORTHWEST OF SNOW
 HU2707'HILL, 171.7 FT (52.3 M) EAST OF A POWERLINE POLE NUMBERED
 HU2707'52286-86708, 39.4 FT (12.0 M) NORTHWEST OF THE CENTERLINE OF STATE
 HU2707'HIGHWAY 354, 38.7 FT (11.8 M) SOUTHWEST OF THE CENTERLINE OF STATE
 HU2707'HIGHWAY 12, 18.2 FT (5.5 M) NORTH OF A SIGNAL LIGHT POLE, SET IN A
 HU2707'DRILL HOLE IN THE TOP OF A CONCRETE HEADWALL IN ROAD RIGHT-OF-WAY.
 HU2707
 HU2707                          STATION RECOVERY (2001)
 HU2707
 HU2707'RECOVERY NOTE BY US POWER SQUADRON 2001 (CGT)
 HU2707'RECOVERED IN GOOD CONDITION.
 HU2707
 HU2707                          STATION RECOVERY (2010)
 HU2707
 HU2707'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HU2707'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0235 ***********************************************************************
 HU0235  DESIGNATION -  20.06 PRR
 HU0235  PID         -  HU0235
 HU0235  STATE/COUNTY-  MD/WORCESTER
 HU0235  COUNTRY     -  US
 HU0235  USGS QUAD   -  SNOW HILL (2016)
 HU0235
 HU0235                         *CURRENT SURVEY CONTROL
 HU0235  ______________________________________________________________________
 HU0235* NAD 83(1986) POSITION- 38 10 22.     (N) 075 23 15.     (W)   SCALED
 HU0235* NAVD 88 ORTHO HEIGHT -     5.573 (meters)       18.28  (feet) ADJUSTED
 HU0235  ______________________________________________________________________
 HU0235  GEOID HEIGHT    -        -36.219 (meters)                     GEOID18
 HU0235  DYNAMIC HEIGHT  -          5.570 (meters)       18.27  (feet) COMP
 HU0235  MODELED GRAVITY -    979,984.2   (mgal)                       NAVD 88
 HU0235
 HU0235  VERT ORDER      -  SECOND    CLASS 0
 HU0235
 HU0235.The horizontal coordinates were scaled from a map and have
 HU0235.an estimated accuracy of +/- 6 seconds.
 HU0235
 HU0235.The orthometric height was determined by differential leveling and
 HU0235.adjusted by the NATIONAL GEODETIC SURVEY
 HU0235.in June 1991.
 HU0235
 HU0235.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0235.GEOID18 height accuracy estimate available here.
 HU0235
 HU0235.Click photographs - Photos may exist for this station.
 HU0235
 HU0235.The dynamic height is computed by dividing the NAVD 88
 HU0235.geopotential number by the normal gravity value computed on the
 HU0235.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0235.degrees latitude (g = 980.6199 gals.).
 HU0235
 HU0235.The modeled gravity was interpolated from observed gravity values.
 HU0235
 HU0235;                    North         East    Units  Estimated Accuracy
 HU0235;SPC MD       -    57,430.      541,290.      MT  (+/- 180 meters Scaled)
 HU0235
 HU0235_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH660250(NAD 83)
 HU0235
 HU0235                          SUPERSEDED SURVEY CONTROL
 HU0235
 HU0235  NGVD 29 (11/26/84)    5.816  (m)           19.08   (f) ADJUSTED    2 0
 HU0235
 HU0235.Superseded values are not recommended for survey control.
 HU0235
 HU0235.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0235.See file dsdata.pdf to determine how the superseded data were derived.
 HU0235
 HU0235_MARKER: B = BOLT
 HU0235_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0235_SP_SET: BUILDING
 HU0235_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0235
 HU0235  HISTORY     - Date     Condition        Report By
 HU0235  HISTORY     - UNK      MONUMENTED       PRR
 HU0235  HISTORY     - 1962     GOOD             CGS
 HU0235  HISTORY     - 20011006 MARK NOT FOUND   USPSQD
 HU0235
 HU0235                          STATION DESCRIPTION
 HU0235
 HU0235'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0235'AT SNOW HILL.
 HU0235'AT SNOW HILL, WORCESTER COUNTY, AT THE PENNSYLVANIA RAILROAD
 HU0235'STATION, IN THE TOP OF THE DOORSILL OF THE MENS WAITING ROOM, 25
 HU0235'FEET WEST OF THE CENTERLINE OF THE TRACK, AND ABOUT 1-1/2 FEET
 HU0235'HIGHER THAN THE TRACK.  A COPPER BOLT.  NOTE-- DOORSILL HAS BEEN
 HU0235'WIDENED AND NOW LEADS TO A STORAGE ROOM.
 HU0235
 HU0235                          STATION RECOVERY (2001)
 HU0235
 HU0235'RECOVERY NOTE BY US POWER SQUADRON 2001 (CGT)
 HU0235'THE RAILROAD STATION HAS UNDERGONE EXTRENSIVE RENOVATION INCLUDING
 HU0235'REFACING OF THE DOORSILLS.  BOLT WAS NOT FOUND
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2575 ***********************************************************************
 JV2575  DESIGNATION -  2000 WSSC
 JV2575  PID         -  JV2575
 JV2575  STATE/COUNTY-  MD/HOWARD
 JV2575  COUNTRY     -  US
 JV2575  USGS QUAD   -  WOODBINE (2016)
 JV2575
 JV2575                         *CURRENT SURVEY CONTROL
 JV2575  ______________________________________________________________________
 JV2575* NAD 83(1986) POSITION- 39 17 13.     (N) 077 02 21.     (W)   SCALED
 JV2575* NAVD 88 ORTHO HEIGHT -   144.857 (meters)      475.25  (feet) ADJUSTED
 JV2575  ______________________________________________________________________
 JV2575  GEOID HEIGHT    -        -31.858 (meters)                     GEOID18
 JV2575  DYNAMIC HEIGHT  -        144.781 (meters)      475.00  (feet) COMP
 JV2575  MODELED GRAVITY -    980,098.5   (mgal)                       NAVD 88
 JV2575
 JV2575  VERT ORDER      -  SECOND    CLASS 0
 JV2575
 JV2575.The horizontal coordinates were scaled from a map and have
 JV2575.an estimated accuracy of +/- 6 seconds.
 JV2575
 JV2575.The orthometric height was determined by differential leveling and
 JV2575.adjusted by the NATIONAL GEODETIC SURVEY
 JV2575.in June 1991.
 JV2575
 JV2575.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2575.GEOID18 height accuracy estimate available here.
 JV2575
 JV2575.Click photographs - Photos may exist for this station.
 JV2575
 JV2575.The dynamic height is computed by dividing the NAVD 88
 JV2575.geopotential number by the normal gravity value computed on the
 JV2575.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2575.degrees latitude (g = 980.6199 gals.).
 JV2575
 JV2575.The modeled gravity was interpolated from observed gravity values.
 JV2575
 JV2575;                    North         East    Units  Estimated Accuracy
 JV2575;SPC MD       -   179,860.      396,620.      MT  (+/- 180 meters Scaled)
 JV2575
 JV2575_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ241506(NAD 83)
 JV2575
 JV2575                          SUPERSEDED SURVEY CONTROL
 JV2575
 JV2575  NGVD 29 (11/26/84)  145.084  (m)          476.00   (f) ADJUSTED    2 0
 JV2575
 JV2575.Superseded values are not recommended for survey control.
 JV2575
 JV2575.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2575.See file dsdata.pdf to determine how the superseded data were derived.
 JV2575
 JV2575_MARKER: B = BOLT
 JV2575_SETTING: 0 = UNSPECIFIED SETTING
 JV2575_SP_SET: IRON PIPE
 JV2575_STAMPING: 2000
 JV2575_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2575
 JV2575  HISTORY     - Date     Condition        Report By
 JV2575  HISTORY     - UNK      MONUMENTED       WSSC
 JV2575  HISTORY     - 1946     GOOD             WSSC
 JV2575
 JV2575                          STATION DESCRIPTION
 JV2575
 JV2575'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2575'0.4 MI S FROM GLENWOOD.
 JV2575'ABOUT 0.4 MILE SOUTH ALONG THE SUNSHINE-GLENWOOD ROAD (STATE
 JV2575'HIGHWAY 97) FROM THE POST OFFICE AT GLENWOOD, HOWARD COUNTY,
 JV2575'THENCE ABOUT 0.5 MILE WEST ALONG THE OLD ABANDONED GLENWOOD-DAISY
 JV2575'ROAD, ABOUT 25 FEET SOUTH OF LITTLE CATTAIL CREEK, 72.4 FEET
 JV2575'NORTHEAST OF A 14-INCH WALNUT TREE, 35.7 FEET NORTHWEST OF A
 JV2575'16-INCH WALNUT TREE, 34.8 FEET SOUTH OF A 24-INCH OAK TREE, AND
 JV2575'10.8 FEET EAST OF A 12-INCH WALNUT TREE.  A WASHINGTON SUBURBAN
 JV2575'SANITARY DISTRICT BRASS BOLT AND WASHER, STAMPED 2000 AND SET IN
 JV2575'THE TOP OF A CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6527 ***********************************************************************
 HV6527  DESIGNATION -  20000 YARD F RNG TRIAL
 HV6527  PID         -  HV6527
 HV6527  STATE/COUNTY-  MD/ST MARYS
 HV6527  COUNTRY     -  US
 HV6527  USGS QUAD   -  POINT LOOKOUT (2016)
 HV6527
 HV6527                         *CURRENT SURVEY CONTROL
 HV6527  ______________________________________________________________________
 HV6527* NAD 83(1993) POSITION- 38 03 03.07860(N) 076 19 44.99746(W)   ADJUSTED
 HV6527* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6527  ______________________________________________________________________
 HV6527  GEOID HEIGHT    -        -35.294 (meters)                     GEOID18
 HV6527  LAPLACE CORR    -         -6.16  (seconds)                    DEFLEC18
 HV6527  HORZ ORDER      -  THIRD
 HV6527
 HV6527.The horizontal coordinates were established by classical geodetic methods
 HV6527.and adjusted by the National Geodetic Survey in November 1994.
 HV6527
 HV6527.The orthometric height was scaled from a topographic map.
 HV6527
 HV6527.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6527.GEOID18 height accuracy estimate available here.
 HV6527
 HV6527.Click photographs - Photos may exist for this station.
 HV6527
 HV6527.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6527
 HV6527. The following values were computed from the NAD 83(1993) position.
 HV6527
 HV6527;                    North         East     Units Scale Factor Converg.
 HV6527;SPC MD       -    42,863.494   458,882.864   MT  1.00005268   +0 25 15.7
 HV6527;SPC MD       -   140,627.98  1,505,518.20   sFT  1.00005268   +0 25 15.7
 HV6527;SPC VA S     - 1,192,801.001 3,690,524.292   MT  1.00001645   +1 19 03.1
 HV6527;SPC VA S     - 3,913,381.28 12,107,995.11   sFT  1.00001645   +1 19 03.1
 HV6527;UTM  18      - 4,212,291.356   383,380.875   MT  0.99976750   -0 49 09.6
 HV6527
 HV6527!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6527!SPC MD       -   1.00000558  x   1.00005268  =   1.00005826
 HV6527!SPC VA S     -   1.00000558  x   1.00001645  =   1.00002203
 HV6527!UTM  18      -   1.00000558  x   0.99976750  =   0.99977308
 HV6527
 HV6527:                Primary Azimuth Mark                     Grid Az
 HV6527:SPC MD       -  POINT LOOKOUT LIGHTHOUSE 1846            154 32 30.0
 HV6527:SPC VA S     -  POINT LOOKOUT LIGHTHOUSE 1846            153 38 42.6
 HV6527:UTM  18      -  POINT LOOKOUT LIGHTHOUSE 1846            155 46 55.3
 HV6527
 HV6527_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8338012291(NAD 83)
 HV6527
 HV6527|---------------------------------------------------------------------|
 HV6527| PID    Reference Object                     Distance      Geod. Az  |
 HV6527|                                                           dddmmss.s |
 HV6527| HV6526 20000 YARD FRONT RANGE                9.082 METERS 08458     |
 HV6527| HV6525 POINT LOOKOUT LIGHTHOUSE 1846       APPROX. 1.5 KM 1545745.7 |
 HV6527|---------------------------------------------------------------------|
 HV6527
 HV6527                          SUPERSEDED SURVEY CONTROL
 HV6527
 HV6527  NAD 83(1991)-  38 03 03.07742(N)    076 19 44.99992(W) AD(       ) 3
 HV6527  NAD 83(1986)-  38 03 03.07947(N)    076 19 45.01462(W) AD(       ) 3
 HV6527  NAD 27      -  38 03 02.62000(N)    076 19 46.21200(W) AD(       ) 3
 HV6527  USSD        -  38 03 02.98300(N)    076 19 45.93100(W) AD(       ) 3
 HV6527
 HV6527.Superseded values are not recommended for survey control.
 HV6527
 HV6527.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6527.See file dsdata.pdf to determine how the superseded data were derived.
 HV6527
 HV6527_MARKER: X = CHISELED CROSS
 HV6527_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6527_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6527
 HV6527  HISTORY     - Date     Condition        Report By
 HV6527  HISTORY     - 1919     MONUMENTED       CGS
 HV6527
 HV6527                          STATION DESCRIPTION
 HV6527
 HV6527'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6527'STATION IS ON NORTHEASTERN SIDE OF POTOMAC RIVER, ON BEACH IN
 HV6527'CORNFIELD HARBOR, 0.8 NAUTICAL MILE NW OF POINT LOOKOUT
 HV6527'LIGHTHOUSE, 0.3 MILE SE OF THE OLD OYSTERHOUSE AT THE ENTRANCE
 HV6527'TO POINT LOOKOUT CREEK, AND IN THE SE EDGE OF WOODS.  THE
 HV6527'LOCATION IS MARKED BY A NARROW LANE CUT THROUGH LOW TREES TO
 HV6527'CREEK.  STATION IS ON FLAT-TOPPED SAND DUNE, 4 FEET HIGH, 12
 HV6527'METERS BACK FROM HIGH-WATER LINE, 6 METERS BACK FROM EDGE OF
 HV6527'SAND BANK 2 FEET HIGH, AND 50 METERS FROM EDGE OF CREEK MEASURED
 HV6527'THROUGH CUT LANE.  MARKED BY A 6-INCH TILE SET IN AND
 HV6527'FILLED WITH CEMENT, WITH SMALL CROSS CUT IN SURFACE.
 HV6527'STATION 20,000-YARD FRONT RANGE IS 9.08 METERS (29.79
 HV6527'FEET) E FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6526 ***********************************************************************
 HV6526  DESIGNATION -  20000 YARD FRONT RANGE
 HV6526  PID         -  HV6526
 HV6526  STATE/COUNTY-  MD/ST MARYS
 HV6526  COUNTRY     -  US
 HV6526  USGS QUAD   -  POINT LOOKOUT (2016)
 HV6526
 HV6526                         *CURRENT SURVEY CONTROL
 HV6526  ______________________________________________________________________
 HV6526* NAD 83(1993) POSITION- 38 03 03.10446(N) 076 19 44.62639(W)   ADJUSTED
 HV6526* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6526  ______________________________________________________________________
 HV6526  GEOID HEIGHT    -        -35.294 (meters)                     GEOID18
 HV6526  LAPLACE CORR    -         -6.16  (seconds)                    DEFLEC18
 HV6526  HORZ ORDER      -  SECOND
 HV6526
 HV6526.The horizontal coordinates were established by classical geodetic methods
 HV6526.and adjusted by the National Geodetic Survey in November 1994.
 HV6526
 HV6526.The orthometric height was scaled from a topographic map.
 HV6526
 HV6526.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6526.GEOID18 height accuracy estimate available here.
 HV6526
 HV6526.Click photographs - Photos may exist for this station.
 HV6526
 HV6526.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6526
 HV6526. The following values were computed from the NAD 83(1993) position.
 HV6526
 HV6526;                    North         East     Units Scale Factor Converg.
 HV6526;SPC MD       -    42,864.358   458,891.905   MT  1.00005267   +0 25 16.0
 HV6526;SPC MD       -   140,630.81  1,505,547.86   sFT  1.00005267   +0 25 16.0
 HV6526;SPC VA S     - 1,192,802.006 3,690,533.318   MT  1.00001645   +1 19 03.3
 HV6526;SPC VA S     - 3,913,384.58 12,108,024.73   sFT  1.00001645   +1 19 03.3
 HV6526;UTM  18      - 4,212,292.024   383,389.930   MT  0.99976747   -0 49 09.4
 HV6526
 HV6526!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6526!SPC MD       -   1.00000558  x   1.00005267  =   1.00005825
 HV6526!SPC VA S     -   1.00000558  x   1.00001645  =   1.00002203
 HV6526!UTM  18      -   1.00000558  x   0.99976747  =   0.99977305
 HV6526
 HV6526_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8338912292(NAD 83)
 HV6526
 HV6526                          SUPERSEDED SURVEY CONTROL
 HV6526
 HV6526  NAD 83(1991)-  38 03 03.10328(N)    076 19 44.62885(W) AD(       ) 2
 HV6526  NAD 83(1986)-  38 03 03.10534(N)    076 19 44.64355(W) AD(       ) 2
 HV6526  NAD 27      -  38 03 02.64600(N)    076 19 45.84100(W) AD(       ) 2
 HV6526  USSD        -  38 03 03.00900(N)    076 19 45.56000(W) AD(       ) 3
 HV6526
 HV6526.Superseded values are not recommended for survey control.
 HV6526
 HV6526.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6526.See file dsdata.pdf to determine how the superseded data were derived.
 HV6526
 HV6526_MARKER: DS = TRIANGULATION STATION DISK
 HV6526_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6526_STAMPING: FRONT RANGE 20000
 HV6526_MARK LOGO: CGS
 HV6526_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6526
 HV6526  HISTORY     - Date     Condition        Report By
 HV6526  HISTORY     - 1919     MONUMENTED       CGS
 HV6526  HISTORY     - 1929     GOOD             CGS
 HV6526
 HV6526                          STATION DESCRIPTION
 HV6526
 HV6526'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6526'STATION IS ON NE SIDE OF POTOMAC RIVER, ON BEACH IN CORNFIELD
 HV6526'HARBOR, 0.8 NAUTICAL MILE NW OF POINT LOOKOUT LIGHTHOUSE, 0.3 MILE
 HV6526'SE OF OLD OYSTER-HOUSE AT ENTRANCE TO POINT LOOKOUT CREEK, AT SE
 HV6526'EDGE OF PINE WOODS.  THE LOCATION IS MARKED BY NARROW LANE CUT
 HV6526'THROUGH LOW TREES TO CREEK.  THE STATION IS MARKED BY A BRONZE
 HV6526'TABLET IN CONCRETE IN A TILE SURROUNDED BY CONCRETE, AS
 HV6526'DESCRIBED IN NOTE 6B.  THE TABLET IN STAMPED FRONT RANGE 20,000.
 HV6526'STATION 20,000-YARD FRONT RANGE TRIAL IS 9.08 METER (29.79
 HV6526'FEET) WESTERLY FROM THE STATION.
 HV6526
 HV6526                          STATION RECOVERY (1929)
 HV6526
 HV6526'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (JS)
 HV6526'STATION RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9889 ***********************************************************************
 HV9889  DESIGNATION -  20022
 HV9889  PID         -  HV9889
 HV9889  STATE/COUNTY-  MD/CHARLES
 HV9889  COUNTRY     -  US
 HV9889  USGS QUAD   -  BRANDYWINE (2016)
 HV9889
 HV9889                         *CURRENT SURVEY CONTROL
 HV9889  ______________________________________________________________________
 HV9889* NAD 83(2011) POSITION- 38 37 37.59321(N) 076 46 41.77057(W)   ADJUSTED
 HV9889* NAD 83(2011) ELLIP HT-    25.834 (meters)        (06/27/12)   ADJUSTED
 HV9889* NAD 83(2011) EPOCH   -  2010.00
 HV9889* NAVD 88 ORTHO HEIGHT -    59.1   (meters)      194.    (feet) GPS OBS
 HV9889  ______________________________________________________________________
 HV9889  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9889  GEOID HEIGHT    -        -33.620 (meters)                     GEOID93
 HV9889  GEOID HEIGHT    -        -33.278 (meters)                     GEOID18
 HV9889  NAD 83(2011) X  -  1,141,151.725 (meters)                     COMP
 HV9889  NAD 83(2011) Y  - -4,857,038.513 (meters)                     COMP
 HV9889  NAD 83(2011) Z  -  3,960,078.397 (meters)                     COMP
 HV9889  LAPLACE CORR    -         -4.33  (seconds)                    DEFLEC18
 HV9889
 HV9889  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9889  Standards:
 HV9889         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9889            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9889  -------------------------------------------------------------------
 HV9889  NETWORK    1.35   3.18           0.56   0.54   1.62     -0.01595464
 HV9889  -------------------------------------------------------------------
 HV9889  Click here for local accuracies and other accuracy information.
 HV9889
 HV9889.The horizontal coordinates were established by GPS observations
 HV9889.and adjusted by the National Geodetic Survey in June 2012.
 HV9889
 HV9889.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9889.been affixed to the stable North American tectonic plate. See 
 HV9889.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9889
 HV9889.The horizontal coordinates are valid at the epoch date displayed above
 HV9889.which is a decimal equivalence of Year/Month/Day.
 HV9889
 HV9889.The orthometric height was determined by GPS observations and a
 HV9889.high-resolution geoid model.
 HV9889
 HV9889.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9889.GEOID18 height accuracy estimate available here.
 HV9889
 HV9889.Click photographs - Photos may exist for this station.
 HV9889
 HV9889.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9889
 HV9889.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9889
 HV9889.The ellipsoidal height was determined by GPS observations
 HV9889.and is referenced to NAD 83.
 HV9889
 HV9889. The following values were computed from the NAD 83(2011) position.
 HV9889
 HV9889;                    North         East     Units Scale Factor Converg.
 HV9889;SPC MD       -   106,636.311   419,307.310   MT  0.99995922   +0 08 21.0
 HV9889;SPC MD       -   349,855.96  1,375,677.40   sFT  0.99995922   +0 08 21.0
 HV9889;UTM  18      - 4,276,897.624   345,206.018   MT  0.99989508   -1 06 37.1
 HV9889
 HV9889!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9889!SPC MD       -   0.99999595  x   0.99995922  =   0.99995517
 HV9889!UTM  18      -   0.99999595  x   0.99989508  =   0.99989103
 HV9889
 HV9889_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4520676897(NAD 83)
 HV9889
 HV9889                          SUPERSEDED SURVEY CONTROL
 HV9889
 HV9889  NAD 83(2007)-  38 37 37.59334(N)    076 46 41.77152(W) AD(2002.00) 0
 HV9889  ELLIP H (02/10/07)   25.816  (m)                       GP(2002.00)    
 HV9889  ELLIP H (08/30/02)   25.811  (m)                       GP(       ) 4 2
 HV9889  NAD 83(1993)-  38 37 37.59276(N)    076 46 41.77160(W) AD(       ) 1
 HV9889  ELLIP H (11/14/94)   25.860  (m)                       GP(       ) 4 2
 HV9889  ELLIP H (09/09/94)   25.839  (m)                       GP(       ) 4 1
 HV9889  NAD 83(1991)-  38 37 37.59235(N)    076 46 41.77228(W) AD(       ) 1
 HV9889
 HV9889.Superseded values are not recommended for survey control.
 HV9889
 HV9889.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9889.See file dsdata.pdf to determine how the superseded data were derived.
 HV9889
 HV9889_MARKER: DD = SURVEY DISK
 HV9889_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9889_STAMPING: 20022
 HV9889_MARK LOGO: WSSC
 HV9889_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV9889_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9889+STABILITY: SURFACE MOTION
 HV9889_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9889+SATELLITE: SATELLITE OBSERVATIONS - April 27, 1993
 HV9889
 HV9889  HISTORY     - Date     Condition        Report By
 HV9889  HISTORY     - 1992     MONUMENTED       NGS
 HV9889  HISTORY     - 19930427 GOOD
 HV9889
 HV9889                          STATION DESCRIPTION
 HV9889
 HV9889'DESCRIBED BY NATIONAL GEODETIC SURVEY 1992
 HV9889'THE STATION IS LOCATED AT THE COUNTY LINE OF PRINCE GEORGES AND
 HV9889'CHARLES COUNTIES, MARYLAND, APPROXIMATELY 2.0 MI (3.2 KM) SOUTH OF
 HV9889'THE TOWN OF BADEN.
 HV9889'TO REACH THE STATION FROM THE INTERSECTION OF POPLAR HILL ROAD (S.R.
 HV9889'382) AND HORSEHEAD ROAD, PROCEED NORTH ON HORSEHEAD ROAD FOR 0.9 MI
 HV9889'(1.4 KM) TO THE COUNTY LINE, AND THE STATION ON THE LEFT.
 HV9889'THE STATION IS A WSSC SURVEY DISK SET IN TOP OF A CONCRETE MONUMENT,
 HV9889'APPROXIMATELY FLUSH WITH GROUND LEVEL, AND STAMPED 20022.  THE DISK
 HV9889'IS LOCATED 5.4 M (17.7 FT) EAST OF A FENCE CORNER, 5.3 M (17.4 FT)
 HV9889'SOUTHWEST OF THE CENTERLINE OF A DIRT ROAD, AND 18.8 M (61.7 FT)
 HV9889'NORTHEAST OF TELEPHONE POLE NO. 2-61.
 HV9889
 HV9889                          STATION RECOVERY (1993)
 HV9889
 HV9889'RECOVERED 1993
 HV9889'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9890 ***********************************************************************
 HV9890  DESIGNATION -  20040
 HV9890  PID         -  HV9890
 HV9890  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9890  COUNTRY     -  US
 HV9890  USGS QUAD   -  LANHAM (2016)
 HV9890
 HV9890                         *CURRENT SURVEY CONTROL
 HV9890  ______________________________________________________________________
 HV9890* NAD 83(2011) POSITION- 38 59 26.27515(N) 076 50 55.54272(W)   ADJUSTED
 HV9890* NAD 83(2011) ELLIP HT-    31.078 (meters)        (06/27/12)   ADJUSTED
 HV9890* NAD 83(2011) EPOCH   -  2010.00
 HV9890* NAVD 88 ORTHO HEIGHT -    63.4   (meters)      208.    (feet) GPS OBS
 HV9890  ______________________________________________________________________
 HV9890  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9890  GEOID HEIGHT    -        -32.720 (meters)                     GEOID93
 HV9890  GEOID HEIGHT    -        -32.351 (meters)                     GEOID18
 HV9890  NAD 83(2011) X  -  1,129,421.637 (meters)                     COMP
 HV9890  NAD 83(2011) Y  - -4,833,814.385 (meters)                     COMP
 HV9890  NAD 83(2011) Z  -  3,991,528.296 (meters)                     COMP
 HV9890  LAPLACE CORR    -         -5.31  (seconds)                    DEFLEC18
 HV9890
 HV9890  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9890  Standards:
 HV9890         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9890            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9890  -------------------------------------------------------------------
 HV9890  NETWORK    1.02   2.16           0.43   0.40   1.10      0.09001793
 HV9890  -------------------------------------------------------------------
 HV9890  Click here for local accuracies and other accuracy information.
 HV9890
 HV9890.The horizontal coordinates were established by GPS observations
 HV9890.and adjusted by the National Geodetic Survey in June 2012.
 HV9890
 HV9890.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9890.been affixed to the stable North American tectonic plate. See 
 HV9890.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9890
 HV9890.The horizontal coordinates are valid at the epoch date displayed above
 HV9890.which is a decimal equivalence of Year/Month/Day.
 HV9890
 HV9890.The orthometric height was determined by GPS observations and a
 HV9890.high-resolution geoid model.
 HV9890
 HV9890.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9890.GEOID18 height accuracy estimate available here.
 HV9890
 HV9890.Click photographs - Photos may exist for this station.
 HV9890
 HV9890.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9890
 HV9890.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9890
 HV9890.The ellipsoidal height was determined by GPS observations
 HV9890.and is referenced to NAD 83.
 HV9890
 HV9890. The following values were computed from the NAD 83(2011) position.
 HV9890
 HV9890;                    North         East     Units Scale Factor Converg.
 HV9890;SPC MD       -   146,977.118   413,102.306   MT  0.99995185   +0 05 41.7
 HV9890;SPC MD       -   482,207.43  1,355,319.82   sFT  0.99995185   +0 05 41.7
 HV9890;UTM  18      - 4,317,362.655   339,885.510   MT  0.99991568   -1 09 48.5
 HV9890
 HV9890!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9890!SPC MD       -   0.99999512  x   0.99995185  =   0.99994697
 HV9890!UTM  18      -   0.99999512  x   0.99991568  =   0.99991080
 HV9890
 HV9890_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3988517362(NAD 83)
 HV9890
 HV9890                          SUPERSEDED SURVEY CONTROL
 HV9890
 HV9890  NAD 83(2007)-  38 59 26.27542(N)    076 50 55.54350(W) AD(2002.00) 0
 HV9890  ELLIP H (02/10/07)   31.102  (m)                       GP(2002.00)    
 HV9890  ELLIP H (08/30/02)   31.114  (m)                       GP(       ) 4 2
 HV9890  ELLIP H (09/09/94)   31.042  (m)                       GP(       ) 4 1
 HV9890  NAD 83(1991)-  38 59 26.27542(N)    076 50 55.54362(W) AD(       ) 1
 HV9890
 HV9890.Superseded values are not recommended for survey control.
 HV9890
 HV9890.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9890.See file dsdata.pdf to determine how the superseded data were derived.
 HV9890
 HV9890_MARKER: DD = SURVEY DISK
 HV9890_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9890_STAMPING: 20040
 HV9890_MARK LOGO: WSSC
 HV9890_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV9890_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9890+STABILITY: SURFACE MOTION
 HV9890_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9890+SATELLITE: SATELLITE OBSERVATIONS - April 16, 1993
 HV9890
 HV9890  HISTORY     - Date     Condition        Report By
 HV9890  HISTORY     - 1992     MONUMENTED       NGS
 HV9890  HISTORY     - 19930416 GOOD
 HV9890
 HV9890                          STATION DESCRIPTION
 HV9890
 HV9890'DESCRIBED BY NATIONAL GEODETIC SURVEY 1992
 HV9890'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9890'APPROXIMATELY 1.0 MI (1.6 KM) EAST OF GREENBELT.
 HV9890'TO REACH THE STATION FROM THE INTERSECTION OF GREENBELT ROAD (S.R.
 HV9890'193) AND BALTIMORE-WASHINGTON PARKWAY, PROCEED EAST ON GREENBELT ROAD
 HV9890'FOR 1.7 MI (2.7 KM) TO THE INTERSECTION WITH BAYWOOD DRIVE. CONTINUE
 HV9890'ON GREENBELT ROAD FOR APPROXIMATELY 30 FT (9.1 M) TO THE STATION ON
 HV9890'THE RIGHT.
 HV9890'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A  CONCRETE
 HV9890'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9890'20040.  THE DISK IS LOCATED 16.9 FT (5.2 M) NORTH OF A MANHOLE, 3.0
 HV9890'FT (0.9 M) SOUTH OF GREENBELT ROAD (BACK OF CURB), AND 24.3 FT
 HV9890'(7.4 M) SOUTHWEST OF A MANHOLE.
 HV9890
 HV9890                          STATION RECOVERY (1993)
 HV9890
 HV9890'RECOVERED 1993
 HV9890'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2622 ***********************************************************************
 JV2622  DESIGNATION -  2008 WSSC
 JV2622  PID         -  JV2622
 JV2622  STATE/COUNTY-  MD/MONTGOMERY
 JV2622  COUNTRY     -  US
 JV2622  USGS QUAD   -  KENSINGTON (2016)
 JV2622
 JV2622                         *CURRENT SURVEY CONTROL
 JV2622  ______________________________________________________________________
 JV2622* NAD 83(1986) POSITION- 39 05 47.     (N) 077 04 45.     (W)   SCALED
 JV2622* NAVD 88 ORTHO HEIGHT -   141.65  (+/-2cm)      464.7   (feet) VERTCON3
 JV2622  ______________________________________________________________________
 JV2622  GEOID HEIGHT    -        -31.817 (meters)                     GEOID18
 JV2622  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2622
 JV2622.The horizontal coordinates were scaled from a map and have
 JV2622.an estimated accuracy of +/- 6 seconds.
 JV2622
 JV2622.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2622.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2622
 JV2622.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2622.GEOID18 height accuracy estimate available here.
 JV2622
 JV2622.The vertical order pertains to the NGVD 29 superseded value.
 JV2622
 JV2622.Click photographs - Photos may exist for this station.
 JV2622
 JV2622;                    North         East    Units  Estimated Accuracy
 JV2622;SPC MD       -   158,710.      393,150.      MT  (+/- 180 meters Scaled)
 JV2622
 JV2622_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ201295(NAD 83)
 JV2622
 JV2622                          SUPERSEDED SURVEY CONTROL
 JV2622
 JV2622  NGVD 29 (11/26/84)  141.866  (m)          465.44   (f) ADJUSTED    2 0
 JV2622
 JV2622.Superseded values are not recommended for survey control.
 JV2622
 JV2622.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2622.See file dsdata.pdf to determine how the superseded data were derived.
 JV2622
 JV2622_MARKER: DD = SURVEY DISK
 JV2622_SETTING: 0 = UNSPECIFIED SETTING
 JV2622_SP_SET: IRON PIPE
 JV2622_STAMPING: 2008
 JV2622_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2622
 JV2622  HISTORY     - Date     Condition        Report By
 JV2622  HISTORY     - UNK      MONUMENTED       WSSC
 JV2622  HISTORY     - 1967     GOOD             MDSRC
 JV2622  HISTORY     - 19950818 GOOD             USPSQD
 JV2622
 JV2622                          STATION DESCRIPTION
 JV2622
 JV2622'DESCRIBED BY MD STATE ROADS COMM 1967
 JV2622'0.5 MI S FROM NORBECK.
 JV2622'ON GEORGIA AVE. (STATE HIGHWAY 97), 0.15 MILE NORTH OF THE
 JV2622'ENTRANCE TO MANOR COUNTRY CLUB, AT THE JUNCTION OF MONTPELIER
 JV2622'RD. LEADING WEST, 81 FT WEST OF THE CENTERLINE OF THE HIGHWAY,
 JV2622'AND 20 FT. NORTH OF THE CENTERLINE OF MONTPELIER RD.
 JV2622
 JV2622                          STATION RECOVERY (1995)
 JV2622
 JV2622'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2622'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2630 ***********************************************************************
 JV2630  DESIGNATION -  2010 WSSC
 JV2630  PID         -  JV2630
 JV2630  STATE/COUNTY-  MD/MONTGOMERY
 JV2630  COUNTRY     -  US
 JV2630  USGS QUAD   -  KENSINGTON (2016)
 JV2630
 JV2630                         *CURRENT SURVEY CONTROL
 JV2630  ______________________________________________________________________
 JV2630* NAD 83(1986) POSITION- 39 04 15.     (N) 077 03 48.     (W)   SCALED
 JV2630* NAVD 88 ORTHO HEIGHT -   125.41  (+/-2cm)      411.4   (feet) VERTCON3
 JV2630  ______________________________________________________________________
 JV2630  GEOID HEIGHT    -        -31.863 (meters)                     GEOID18
 JV2630  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2630
 JV2630.The horizontal coordinates were scaled from a map and have
 JV2630.an estimated accuracy of +/- 6 seconds.
 JV2630
 JV2630.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2630.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2630
 JV2630.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2630.GEOID18 height accuracy estimate available here.
 JV2630
 JV2630.The vertical order pertains to the NGVD 29 superseded value.
 JV2630
 JV2630.Click photographs - Photos may exist for this station.
 JV2630
 JV2630;                    North         East    Units  Estimated Accuracy
 JV2630;SPC MD       -   155,870.      394,520.      MT  (+/- 180 meters Scaled)
 JV2630
 JV2630_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ215266(NAD 83)
 JV2630
 JV2630                          SUPERSEDED SURVEY CONTROL
 JV2630
 JV2630  NGVD 29 (11/26/84)  125.631  (m)          412.17   (f) ADJUSTED    2 0
 JV2630
 JV2630.Superseded values are not recommended for survey control.
 JV2630
 JV2630.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2630.See file dsdata.pdf to determine how the superseded data were derived.
 JV2630
 JV2630_MARKER: DD = SURVEY DISK
 JV2630_SETTING: 0 = UNSPECIFIED SETTING
 JV2630_SP_SET: IRON PIPE
 JV2630_STAMPING: 2010
 JV2630_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2630
 JV2630  HISTORY     - Date     Condition        Report By
 JV2630  HISTORY     - UNK      MONUMENTED       WSSC
 JV2630  HISTORY     - 1944     GOOD             WSSC
 JV2630  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2630
 JV2630                          STATION DESCRIPTION
 JV2630
 JV2630'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2630'1 MI N FROM GLENMONT.
 JV2630'ON GEORGIA AVENUE (STATE HIGHWAY 97), 145 FEET SOUTH OF A DRIVE
 JV2630'LEADING EAST, OPPOSITE A DRIVE LEADING WEST TO BROOK LEE FARM,
 JV2630'19.3 FEET EAST OF THE CENTERLINE OF THE HIGHWAY, 78.4 FEET NORTH
 JV2630'OF A 16-INCH ASH TREE, 42.3 FEET NORTHEAST ACROSS THE HIGHWAY
 JV2630'FROM A 10-INCH CEDAR TREE, AND 17.1 FEET SOUTH OF P.E.P. CO. POLE
 JV2630'723186.
 JV2630
 JV2630                          STATION RECOVERY (1995)
 JV2630
 JV2630'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2630'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2579 ***********************************************************************
 JV2579  DESIGNATION -  2011 WSSC
 JV2579  PID         -  JV2579
 JV2579  STATE/COUNTY-  MD/HOWARD
 JV2579  COUNTRY     -  US
 JV2579  USGS QUAD   -  WOODBINE (2016)
 JV2579
 JV2579                         *CURRENT SURVEY CONTROL
 JV2579  ______________________________________________________________________
 JV2579* NAD 83(1986) POSITION- 39 17 37.     (N) 077 04 08.     (W)   SCALED
 JV2579* NAVD 88 ORTHO HEIGHT -   168.28  (+/-2cm)      552.1   (feet) VERTCON3
 JV2579  ______________________________________________________________________
 JV2579  GEOID HEIGHT    -        -31.840 (meters)                     GEOID18
 JV2579  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2579
 JV2579.The horizontal coordinates were scaled from a map and have
 JV2579.an estimated accuracy of +/- 6 seconds.
 JV2579
 JV2579.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2579.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2579
 JV2579.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2579.GEOID18 height accuracy estimate available here.
 JV2579
 JV2579.The vertical order pertains to the NGVD 29 superseded value.
 JV2579
 JV2579.Click photographs - Photos may exist for this station.
 JV2579
 JV2579;                    North         East    Units  Estimated Accuracy
 JV2579;SPC MD       -   180,600.      394,060.      MT  (+/- 180 meters Scaled)
 JV2579
 JV2579_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ215514(NAD 83)
 JV2579
 JV2579                          SUPERSEDED SURVEY CONTROL
 JV2579
 JV2579  NGVD 29 (11/26/84)  168.490  (m)          552.79   (f) ADJUSTED    2 0
 JV2579
 JV2579.Superseded values are not recommended for survey control.
 JV2579
 JV2579.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2579.See file dsdata.pdf to determine how the superseded data were derived.
 JV2579
 JV2579_MARKER: DD = SURVEY DISK
 JV2579_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2579_SP_SET: BUILDING
 JV2579_STAMPING: 2011
 JV2579_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2579
 JV2579  HISTORY     - Date     Condition        Report By
 JV2579  HISTORY     - UNK      MONUMENTED       WSSC
 JV2579  HISTORY     - 1946     GOOD             WSSC
 JV2579
 JV2579                          STATION DESCRIPTION
 JV2579
 JV2579'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2579'AT DAISY.
 JV2579'AT DAISY, HOWARD COUNTY, AT THE INTERSECTION OF THE GLENWOOD-FLORENCE
 JV2579'ROAD AND THE MOUNT AIRY-ROXBURY MILLS ROAD, OPPOSITE THE GENERAL
 JV2579'STORE, AND IN THE SOUTHEAST CORNER OF THE FORD GARAGE.  A
 JV2579'WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED 2011.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1315 ***********************************************************************
 HV1315  DESIGNATION -  2017 WSSC
 HV1315  PID         -  HV1315
 HV1315  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1315  COUNTRY     -  US
 HV1315  USGS QUAD   -  ANACOSTIA (2016)
 HV1315
 HV1315                         *CURRENT SURVEY CONTROL
 HV1315  ______________________________________________________________________
 HV1315* NAD 83(1986) POSITION- 38 52 18.     (N) 076 55 28.     (W)   SCALED
 HV1315* NAVD 88 ORTHO HEIGHT -    86.88  (+/-2cm)      285.0   (feet) VERTCON3
 HV1315  ______________________________________________________________________
 HV1315  GEOID HEIGHT    -        -32.321 (meters)                     GEOID18
 HV1315  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1315
 HV1315.The horizontal coordinates were scaled from a map and have
 HV1315.an estimated accuracy of +/- 6 seconds.
 HV1315
 HV1315.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1315.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1315
 HV1315.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1315.GEOID18 height accuracy estimate available here.
 HV1315
 HV1315.The vertical order pertains to the NGVD 29 superseded value.
 HV1315
 HV1315.Click photographs - Photos may exist for this station.
 HV1315
 HV1315;                    North         East    Units  Estimated Accuracy
 HV1315;SPC MD       -   133,760.      406,560.      MT  (+/- 180 meters Scaled)
 HV1315
 HV1315_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ330042(NAD 83)
 HV1315
 HV1315                          SUPERSEDED SURVEY CONTROL
 HV1315
 HV1315  NGVD 29 (11/26/84)   87.120  (m)          285.83   (f) ADJUSTED    2 0
 HV1315
 HV1315.Superseded values are not recommended for survey control.
 HV1315
 HV1315.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1315.See file dsdata.pdf to determine how the superseded data were derived.
 HV1315
 HV1315_MARKER: DD = SURVEY DISK
 HV1315_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1315_STAMPING: 2017
 HV1315_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1315
 HV1315  HISTORY     - Date     Condition        Report By
 HV1315  HISTORY     - 1944     MONUMENTED       WSSC
 HV1315
 HV1315                          STATION DESCRIPTION
 HV1315
 HV1315'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1315'AT HILLSIDE.  ON MARLBORO PIKE, ABOUT 500 FT (152.4 M) WEST OF CRYSTAL
 HV1315'SPRING AVENUE, 150 FT (45.7 M) EAST OF HOWARD STREET, ON THE NORTH
 HV1315'SIDE OF THE ROAD, IN THE LAWN OF A BRICK HOUSE, 2.5 FT (0.8 M) NORTH
 HV1315'OF THE HEDGE AND 2.5 FT (0.8 M) WEST OF THE FENCE.
 HV1315'
 HV1315'NOTE-CRYSTAL SPRING AVENUE IS ALSO 57TH AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2596 ***********************************************************************
 JV2596  DESIGNATION -  2018 WSSC
 JV2596  PID         -  JV2596
 JV2596  STATE/COUNTY-  MD/MONTGOMERY
 JV2596  COUNTRY     -  US
 JV2596  USGS QUAD   -  GAITHERSBURG (2016)
 JV2596
 JV2596                         *CURRENT SURVEY CONTROL
 JV2596  ______________________________________________________________________
 JV2596* NAD 83(1986) POSITION- 39 12 43.     (N) 077 08 36.     (W)   SCALED
 JV2596* NAVD 88 ORTHO HEIGHT -   184.80  (+/-2cm)      606.3   (feet) VERTCON3
 JV2596  ______________________________________________________________________
 JV2596  GEOID HEIGHT    -        -31.768 (meters)                     GEOID18
 JV2596  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2596
 JV2596.The horizontal coordinates were scaled from a map and have
 JV2596.an estimated accuracy of +/- 6 seconds.
 JV2596
 JV2596.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2596.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2596
 JV2596.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2596.GEOID18 height accuracy estimate available here.
 JV2596
 JV2596.The vertical order pertains to the NGVD 29 superseded value.
 JV2596
 JV2596.Click photographs - Photos may exist for this station.
 JV2596
 JV2596;                    North         East    Units  Estimated Accuracy
 JV2596;SPC MD       -   171,540.      387,620.      MT  (+/- 180 meters Scaled)
 JV2596
 JV2596_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ149424(NAD 83)
 JV2596
 JV2596                          SUPERSEDED SURVEY CONTROL
 JV2596
 JV2596  NGVD 29 (11/26/84)  185.006  (m)          606.97   (f) ADJUSTED    2 0
 JV2596
 JV2596.Superseded values are not recommended for survey control.
 JV2596
 JV2596.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2596.See file dsdata.pdf to determine how the superseded data were derived.
 JV2596
 JV2596_MARKER: DD = SURVEY DISK
 JV2596_SETTING: 0 = UNSPECIFIED SETTING
 JV2596_SP_SET: IRON PIPE
 JV2596_STAMPING: 2018
 JV2596_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2596
 JV2596  HISTORY     - Date     Condition        Report By
 JV2596  HISTORY     - UNK      MONUMENTED       WSSC
 JV2596  HISTORY     - 1946     GOOD             WSSC
 JV2596
 JV2596                          STATION DESCRIPTION
 JV2596
 JV2596'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2596'AT LAYTONSVILLE.
 JV2596'AT LAYTONSIVLLE, MONTGOMERY COUNTY, ON THE LAYTONSVILLE-GOSHEN
 JV2596'ROAD (STATE HIGHWAY 124), ABOUT 300 FEET WEST OF THE INTERSECTION
 JV2596'OF STATE HIGHWAY 108, IN THE LAWN OF THE FIRST HOUSE WEST OF THE
 JV2596'GENERAL STORE, 35 FEET NORTH OF THE CENTER LINE OF THE ROAD, 66.5
 JV2596'FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE HOUSE, 35.2 FEET
 JV2596'EAST OF THE EASTERNMOST ONE OF FOUR 24-INCH MAPLE TREES, AND
 JV2596'9.7 FEET NORTHWEST OF A FENCE CORNER.  A WASHINGTON SUBURBAN
 JV2596'SANITARY DISTRICT STANDARD DISK, STAMPED 2018 AND SET IN THE
 JV2596'TOP OF A CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2768 ***********************************************************************
 JV2768  DESIGNATION -  2020 WSSC
 JV2768  PID         -  JV2768
 JV2768  STATE/COUNTY-  MD/MONTGOMERY
 JV2768  COUNTRY     -  US
 JV2768  USGS QUAD   -  SANDY SPRING (2016)
 JV2768
 JV2768                         *CURRENT SURVEY CONTROL
 JV2768  ______________________________________________________________________
 JV2768* NAD 83(1986) POSITION- 39 13 21.     (N) 077 05 00.     (W)   SCALED
 JV2768* NAVD 88 ORTHO HEIGHT -   157.74  (+/-2cm)      517.5   (feet) VERTCON3
 JV2768  ______________________________________________________________________
 JV2768  GEOID HEIGHT    -        -31.806 (meters)                     GEOID18
 JV2768  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2768
 JV2768.The horizontal coordinates were scaled from a map and have
 JV2768.an estimated accuracy of +/- 6 seconds.
 JV2768
 JV2768.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2768.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2768
 JV2768.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2768.GEOID18 height accuracy estimate available here.
 JV2768
 JV2768.The vertical order pertains to the NGVD 29 superseded value.
 JV2768
 JV2768.Click photographs - Photos may exist for this station.
 JV2768
 JV2768;                    North         East    Units  Estimated Accuracy
 JV2768;SPC MD       -   172,710.      392,800.      MT  (+/- 180 meters Scaled)
 JV2768
 JV2768_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ201435(NAD 83)
 JV2768
 JV2768                          SUPERSEDED SURVEY CONTROL
 JV2768
 JV2768  NGVD 29 (11/26/84)  157.943  (m)          518.18   (f) ADJUSTED    2 0
 JV2768
 JV2768.Superseded values are not recommended for survey control.
 JV2768
 JV2768.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2768.See file dsdata.pdf to determine how the superseded data were derived.
 JV2768
 JV2768_MARKER: DD = SURVEY DISK
 JV2768_SETTING: 0 = UNSPECIFIED SETTING
 JV2768_SP_SET: IRON PIPE
 JV2768_STAMPING: 2020
 JV2768_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2768
 JV2768  HISTORY     - Date     Condition        Report By
 JV2768  HISTORY     - UNK      MONUMENTED       WSSC
 JV2768  HISTORY     - 1939     GOOD             WSSC
 JV2768
 JV2768                          STATION DESCRIPTION
 JV2768
 JV2768'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2768'0.8 MI W FROM UNITY.
 JV2768'ON THE LAYTONSVILLE ROAD (STATE HIGHWAY 701), 22 FEET NORTH OF
 JV2768'THE CENTERLINE OF THE ROAD, IN FRONT OF THE HOBBS RESIDENCE,
 JV2768'61.5 FEET SOUTHWEST OF THE SOUTHEAST CORNER OF THE PORCH, 55.6
 JV2768'FEET SOUTH OF THE SOUTHWEST CORNER, AND SOUTH OF THE LAWN FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1084 ***********************************************************************
 JV1084  DESIGNATION -  2022
 JV1084  PID         -  JV1084
 JV1084  STATE/COUNTY-  MD/HOWARD
 JV1084  COUNTRY     -  US
 JV1084  USGS QUAD   -  CLARKSVILLE (2016)
 JV1084
 JV1084                         *CURRENT SURVEY CONTROL
 JV1084  ______________________________________________________________________
 JV1084* NAD 83(1986) POSITION- 39 09 03.     (N) 076 55 23.     (W)   SCALED
 JV1084* NAVD 88 ORTHO HEIGHT -   137.86  (+/-2cm)      452.3   (feet) VERTCON3
 JV1084  ______________________________________________________________________
 JV1084  GEOID HEIGHT    -        -32.076 (meters)                     GEOID18
 JV1084  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1084
 JV1084.The horizontal coordinates were scaled from a map and have
 JV1084.an estimated accuracy of +/- 6 seconds.
 JV1084
 JV1084.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1084.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1084
 JV1084.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1084.GEOID18 height accuracy estimate available here.
 JV1084
 JV1084.The vertical order pertains to the NGVD 29 superseded value.
 JV1084
 JV1084.Click photographs - Photos may exist for this station.
 JV1084
 JV1084;                    North         East    Units  Estimated Accuracy
 JV1084;SPC MD       -   164,750.      406,650.      MT  (+/- 180 meters Scaled)
 JV1084
 JV1084_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ338352(NAD 83)
 JV1084
 JV1084                          SUPERSEDED SURVEY CONTROL
 JV1084
 JV1084  NGVD 29 (11/26/84)  138.071  (m)          452.99   (f) ADJUSTED    2 0
 JV1084
 JV1084.Superseded values are not recommended for survey control.
 JV1084
 JV1084.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1084.See file dsdata.pdf to determine how the superseded data were derived.
 JV1084
 JV1084_STAMPING: 2022
 JV1084
 JV1084  HISTORY     - Date     Condition        Report By
 JV1084  HISTORY     - UNK      MONUMENTED       WSSC
 JV1084  HISTORY     - 1939     GOOD             WSSC
 JV1084  HISTORY     - 1965     MARK NOT FOUND   WSSC
 JV1084  HISTORY     - 20201028 MARK NOT FOUND   PROFLN
 JV1084
 JV1084                          STATION DESCRIPTION
 JV1084
 JV1084'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1084'AT FULTON.
 JV1084'AT FULTON, HOWARD COUNTY, ON THE LAUREL-HIGHLAND ROAD, AT THE
 JV1084'JUNCTION OF FEATHERBED LANE, NEAR BRADYS STORE, 68.8 FEET
 JV1084'NORTHEAST OF THE NORTHWEST CORNER OF THE FRONT PORCH, 83.0
 JV1084'(23.0) FEET SOUTHWEST OF THE SOUTH HEAD WALL OF A CULVERT UNDER
 JV1084'THE MAIN ROAD, 30.5 FEET NORTHWEST OF A 24-INCH OAK TREE, AND
 JV1084'27.9 FEET WEST OF ANOTHER 24-INCH OAK TREE.  A WASHINGTON
 JV1084'SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED 2022 AND SET
 JV1084'IN THE TOP OF A CONCRETE-FILLED IRON PIPE.  (452.989 FEET.)
 JV1084
 JV1084                          STATION RECOVERY (1965)
 JV1084
 JV1084'RECOVERY NOTE BY WASH SUBURB SAN COMM 1965
 JV1084'MARK NOT FOUND.
 JV1084
 JV1084                          STATION RECOVERY (2020)
 JV1084
 JV1084'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV1084'THE OLD STORE IS STILL THERE BUT ENOUGH CHANGES HAVE TAKEN PLACE THAT
 JV1084'THE LOCATION OF THE MARK WAS NOT SUCCESSFUL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1085 ***********************************************************************
 JV1085  DESIGNATION -  2022 A WSSC
 JV1085  PID         -  JV1085
 JV1085  STATE/COUNTY-  MD/HOWARD
 JV1085  COUNTRY     -  US
 JV1085  USGS QUAD   -  CLARKSVILLE (2016)
 JV1085
 JV1085                         *CURRENT SURVEY CONTROL
 JV1085  ______________________________________________________________________
 JV1085* NAD 83(1986) POSITION- 39 09 45.     (N) 076 56 08.     (W)   SCALED
 JV1085* NAVD 88 ORTHO HEIGHT -   144.60  (+/-2cm)      474.4   (feet) VERTCON3
 JV1085  ______________________________________________________________________
 JV1085  GEOID HEIGHT    -        -32.049 (meters)                     GEOID18
 JV1085  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1085
 JV1085.The horizontal coordinates were scaled from a map and have
 JV1085.an estimated accuracy of +/- 6 seconds.
 JV1085
 JV1085.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1085.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1085
 JV1085.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1085.GEOID18 height accuracy estimate available here.
 JV1085
 JV1085.The vertical order pertains to the NGVD 29 superseded value.
 JV1085
 JV1085.Click photographs - Photos may exist for this station.
 JV1085
 JV1085;                    North         East    Units  Estimated Accuracy
 JV1085;SPC MD       -   166,050.      405,570.      MT  (+/- 180 meters Scaled)
 JV1085
 JV1085_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ327365(NAD 83)
 JV1085
 JV1085                          SUPERSEDED SURVEY CONTROL
 JV1085
 JV1085  NGVD 29 (11/26/84)  144.815  (m)          475.11   (f) ADJUSTED    2 0
 JV1085
 JV1085.Superseded values are not recommended for survey control.
 JV1085
 JV1085.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1085.See file dsdata.pdf to determine how the superseded data were derived.
 JV1085
 JV1085_MARKER: Z = SEE DESCRIPTION
 JV1085_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1085_SP_SET: TREE
 JV1085_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1085
 JV1085  HISTORY     - Date     Condition        Report By
 JV1085  HISTORY     - UNK      MONUMENTED       WSSC
 JV1085  HISTORY     - 1939     GOOD             WSSC
 JV1085
 JV1085                          STATION DESCRIPTION
 JV1085
 JV1085'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1085'1 MI NW FROM FULTON.
 JV1085'ABOUT 1.0 MILE NORTHWEST ALONG THE LAUREL-HIGHLAND ROAD FROM
 JV1085'FULTON, HOWARD COUNTY, SOUTHWEST OF THE ROAD, AND IN THE
 JV1085'NORTHEAST ROOT OF A 20-INCH LOCUST TREE.  A WASHINGTON SUBURBAN
 JV1085'SANITARY DISTRICT COPPER LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2584 ***********************************************************************
 JV2584  DESIGNATION -  2024 WSSC
 JV2584  PID         -  JV2584
 JV2584  STATE/COUNTY-  MD/HOWARD
 JV2584  COUNTRY     -  US
 JV2584  USGS QUAD   -  WOODBINE (2016)
 JV2584
 JV2584                         *CURRENT SURVEY CONTROL
 JV2584  ______________________________________________________________________
 JV2584* NAD 83(1986) POSITION- 39 17 06.     (N) 077 05 27.     (W)   SCALED
 JV2584* NAVD 88 ORTHO HEIGHT -   170.86  (+/-2cm)      560.6   (feet) VERTCON3
 JV2584  ______________________________________________________________________
 JV2584  GEOID HEIGHT    -        -31.824 (meters)                     GEOID18
 JV2584  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2584
 JV2584.The horizontal coordinates were scaled from a map and have
 JV2584.an estimated accuracy of +/- 6 seconds.
 JV2584
 JV2584.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2584.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2584
 JV2584.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2584.GEOID18 height accuracy estimate available here.
 JV2584
 JV2584.The vertical order pertains to the NGVD 29 superseded value.
 JV2584
 JV2584.Click photographs - Photos may exist for this station.
 JV2584
 JV2584;                    North         East    Units  Estimated Accuracy
 JV2584;SPC MD       -   179,650.      392,160.      MT  (+/- 180 meters Scaled)
 JV2584
 JV2584_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ196504(NAD 83)
 JV2584
 JV2584                          SUPERSEDED SURVEY CONTROL
 JV2584
 JV2584  NGVD 29 (11/26/84)  171.067  (m)          561.24   (f) ADJUSTED    2 0
 JV2584
 JV2584.Superseded values are not recommended for survey control.
 JV2584
 JV2584.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2584.See file dsdata.pdf to determine how the superseded data were derived.
 JV2584
 JV2584_MARKER: DD = SURVEY DISK
 JV2584_SETTING: 0 = UNSPECIFIED SETTING
 JV2584_SP_SET: IRON PIPE
 JV2584_STAMPING: 2024
 JV2584_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2584
 JV2584  HISTORY     - Date     Condition        Report By
 JV2584  HISTORY     - UNK      MONUMENTED       WSSC
 JV2584  HISTORY     - 1946     GOOD             WSSC
 JV2584
 JV2584                          STATION DESCRIPTION
 JV2584
 JV2584'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2584'1.5 MI SW FROM DAISY.
 JV2584'ABOUT 1.5 MILES SOUTHWEST ALONG THE DIASY-ETCHISON ROAD FROM
 JV2584'DAISY, HOWARD COUNTY, THENCE ABOUT 0.2 MILE SOUTHEAST ALONG
 JV2584'THE FLORENCE-ROXBURY MILLS ROAD, ABOUT 300 FEET NORTHWEST OF
 JV2584'THE JUNCTION OF A ROAD LEADING SOUTHWEST TO HIPSLEYS MILL, ABOUT
 JV2584'166 FEET NORTHEAST OF THE CENTER LINE OF THE FLORENCE-ROXBURY
 JV2584'MILLS ROAD, 27.4 FEET NORTHEAST OF POLE 44, AND IN THE FENCE
 JV2584'LINE.  A WASHINGTON SURBURBAN SANITARY DISTRICT STANDARD DISK,
 JV2584'STAMPED 2024 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1081 ***********************************************************************
 JV1081  DESIGNATION -  2030
 JV1081  PID         -  JV1081
 JV1081  STATE/COUNTY-  MD/HOWARD
 JV1081  COUNTRY     -  US
 JV1081  USGS QUAD   -  CLARKSVILLE (2016)
 JV1081
 JV1081                         *CURRENT SURVEY CONTROL
 JV1081  ______________________________________________________________________
 JV1081* NAD 83(1986) POSITION- 39 08 43.     (N) 076 54 04.     (W)   SCALED
 JV1081* NAVD 88 ORTHO HEIGHT -   135.003 (meters)      442.92  (feet) ADJUSTED
 JV1081  ______________________________________________________________________
 JV1081  GEOID HEIGHT    -        -32.118 (meters)                     GEOID18
 JV1081  DYNAMIC HEIGHT  -        134.930 (meters)      442.68  (feet) COMP
 JV1081  MODELED GRAVITY -    980,082.8   (mgal)                       NAVD 88
 JV1081
 JV1081  VERT ORDER      -  SECOND    CLASS 0
 JV1081
 JV1081.The horizontal coordinates were scaled from a map and have
 JV1081.an estimated accuracy of +/- 6 seconds.
 JV1081
 JV1081.The orthometric height was determined by differential leveling and
 JV1081.adjusted by the NATIONAL GEODETIC SURVEY
 JV1081.in June 1991.
 JV1081
 JV1081.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1081.GEOID18 height accuracy estimate available here.
 JV1081
 JV1081.Click photographs - Photos may exist for this station.
 JV1081
 JV1081.The dynamic height is computed by dividing the NAVD 88
 JV1081.geopotential number by the normal gravity value computed on the
 JV1081.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1081.degrees latitude (g = 980.6199 gals.).
 JV1081
 JV1081.The modeled gravity was interpolated from observed gravity values.
 JV1081
 JV1081;                    North         East    Units  Estimated Accuracy
 JV1081;SPC MD       -   164,140.      408,550.      MT  (+/- 180 meters Scaled)
 JV1081
 JV1081_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ357346(NAD 83)
 JV1081
 JV1081                          SUPERSEDED SURVEY CONTROL
 JV1081
 JV1081  NGVD 29 (11/26/84)  135.218  (m)          443.63   (f) ADJUSTED    2 0
 JV1081
 JV1081.Superseded values are not recommended for survey control.
 JV1081
 JV1081.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1081.See file dsdata.pdf to determine how the superseded data were derived.
 JV1081
 JV1081_STAMPING: 2030
 JV1081
 JV1081  HISTORY     - Date     Condition        Report By
 JV1081  HISTORY     - UNK      MONUMENTED       WSSC
 JV1081  HISTORY     - 1939     GOOD             WSSC
 JV1081  HISTORY     - 1966     GOOD             CGS
 JV1081  HISTORY     - 20201028 MARK NOT FOUND   PROFLN
 JV1081
 JV1081                          STATION DESCRIPTION
 JV1081
 JV1081'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1081'AT SCAGGSVILLE.
 JV1081'AT SCAGGSVILLE, HOWARD COUNTY, ON THE LAUREL-FULTON ROAD, AT THE
 JV1081'INTERSECTION OF THE BURTONSVILLE-COLUMBIA PIKE, ABOUT 125 FEET
 JV1081'WEST OF THE COLUMBIA PIKE, 48.7 FEET SOUTH OF THE CENTER LINE OF
 JV1081'THE LAUREL-FULTON ROAD, NEAR THE GEORGE W. RENN RESIDENCE AT
 JV1081'THE SOUTHWEST CORNER OF THE INTERSECTION, 61.5 FEET NORTHWEST OF
 JV1081'THE SOUTHWEST CORNER OF THE HOUSE, 23.5 FEET NORTHWEST OF THE
 JV1081'NORTHWEST CORNER OF THE HOUSE, 64 FEET SOUTHWEST OF A POPLAR TREE
 JV1081'NEAR THE HOUSE, AND 64.4 FEET SOUTH OF A LOCUST TREE NORTH OF
 JV1081'THE ROAD.  A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD DISK,
 JV1081'STAMPED 2030 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1081
 JV1081                          STATION RECOVERY (1966)
 JV1081
 JV1081'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV1081'RECOVERED IN GOOD CONDITION.
 JV1081
 JV1081                          STATION RECOVERY (2020)
 JV1081
 JV1081'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV1081'BELIEVED DESTROYED BY HIGHWAY CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7092 ***********************************************************************
 JV7092  DESIGNATION -  20300
 JV7092  PID         -  JV7092
 JV7092  STATE/COUNTY-  MD/MONTGOMERY
 JV7092  COUNTRY     -  US
 JV7092  USGS QUAD   -  GERMANTOWN (2016)
 JV7092
 JV7092                         *CURRENT SURVEY CONTROL
 JV7092  ______________________________________________________________________
 JV7092* NAD 83(2011) POSITION- 39 11 07.27011(N) 077 18 29.63923(W)   ADJUSTED
 JV7092* NAD 83(2011) ELLIP HT-    93.816 (meters)        (06/27/12)   ADJUSTED
 JV7092* NAD 83(2011) EPOCH   -  2010.00
 JV7092* NAVD 88 ORTHO HEIGHT -   125.8   (meters)      413.    (feet) GPS OBS
 JV7092  ______________________________________________________________________
 JV7092  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7092  GEOID HEIGHT    -        -32.280 (meters)                     GEOID93
 JV7092  GEOID HEIGHT    -        -31.915 (meters)                     GEOID18
 JV7092  NAD 83(2011) X  -  1,087,638.068 (meters)                     COMP
 JV7092  NAD 83(2011) Y  - -4,829,466.406 (meters)                     COMP
 JV7092  NAD 83(2011) Z  -  4,008,346.936 (meters)                     COMP
 JV7092  LAPLACE CORR    -          3.72  (seconds)                    DEFLEC18
 JV7092
 JV7092  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7092  Standards:
 JV7092         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7092            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7092  -------------------------------------------------------------------
 JV7092  NETWORK    2.26   3.21           0.98   0.86   1.64     -0.01362134
 JV7092  -------------------------------------------------------------------
 JV7092  Click here for local accuracies and other accuracy information.
 JV7092
 JV7092.The horizontal coordinates were established by GPS observations
 JV7092.and adjusted by the National Geodetic Survey in June 2012.
 JV7092
 JV7092.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7092.been affixed to the stable North American tectonic plate. See 
 JV7092.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7092
 JV7092.The horizontal coordinates are valid at the epoch date displayed above
 JV7092.which is a decimal equivalence of Year/Month/Day.
 JV7092
 JV7092.The orthometric height was determined by GPS observations and a
 JV7092.high-resolution geoid model.
 JV7092
 JV7092.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7092.GEOID18 height accuracy estimate available here.
 JV7092
 JV7092.Click photographs - Photos may exist for this station.
 JV7092
 JV7092.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7092
 JV7092.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7092
 JV7092.The ellipsoidal height was determined by GPS observations
 JV7092.and is referenced to NAD 83.
 JV7092
 JV7092. The following values were computed from the NAD 83(2011) position.
 JV7092
 JV7092;                    North         East     Units Scale Factor Converg.
 JV7092;SPC MD       -   168,627.649   373,369.676   MT  0.99996441   -0 11 36.4
 JV7092;SPC MD       -   553,239.21  1,224,963.68   sFT  0.99996441   -0 11 36.4
 JV7092;UTM  18      - 4,339,883.770   300,637.586   MT  1.00008941   -1 27 32.0
 JV7092
 JV7092!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7092!SPC MD       -   0.99998528  x   0.99996441  =   0.99994969
 JV7092!UTM  18      -   0.99998528  x   1.00008941  =   1.00007469
 JV7092
 JV7092_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0063739883(NAD 83)
 JV7092
 JV7092                          SUPERSEDED SURVEY CONTROL
 JV7092
 JV7092  NAD 83(2007)-  39 11 07.27034(N)    077 18 29.63974(W) AD(2002.00) 0
 JV7092  ELLIP H (02/10/07)   93.894  (m)                       GP(2002.00)    
 JV7092  ELLIP H (08/30/02)   93.885  (m)                       GP(       ) 4 2
 JV7092  NAD 83(1991)-  39 11 07.27002(N)    077 18 29.63964(W) AD(       ) 1
 JV7092  ELLIP H (01/11/94)   93.835  (m)                       GP(       ) 4 1
 JV7092
 JV7092.Superseded values are not recommended for survey control.
 JV7092
 JV7092.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7092.See file dsdata.pdf to determine how the superseded data were derived.
 JV7092
 JV7092_MARKER: DD = SURVEY DISK
 JV7092_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7092_STAMPING: T.S. 20300 MC
 JV7092_MARK LOGO: WSSC
 JV7092_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7092_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7092+STABILITY: SURFACE MOTION
 JV7092_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7092+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV7092
 JV7092  HISTORY     - Date     Condition        Report By
 JV7092  HISTORY     - 1993     MONUMENTED       MSI
 JV7092  HISTORY     - 19940401 GOOD             MSI
 JV7092  HISTORY     - 20040324 GOOD             URS
 JV7092  HISTORY     - 20050405 GOOD             USPSQD
 JV7092
 JV7092                          STATION DESCRIPTION
 JV7092
 JV7092'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7092'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7092'2.1 MI (3.4 KM) WEST OF THE TOWN OF GERMANTOWN.  TO REACH THE STATION
 JV7092'FROM THE INTERSECTION OF DARNESTOWN-GERMANTOWN ROAD (S.R. 118) AND
 JV7092'CLOPPER ROAD (S.R. 117), PROCEED NORTHWEST ALONG CLOPPER ROAD FOR 2.3
 JV7092'MI (3.7 KM) TO THE INTERSECTION WITH CLARKSBURG ROAD (S.R. 121). TURN
 JV7092'RIGHT AND TRAVEL NORTH ON CLARKSBURG ROAD, UNDER THE RAILWAY
 JV7092'OVERPASS, FOR APPROXIMATELY 180 FT (54.9 M) TO INTERSECTION WITH A
 JV7092'DIRT ROAD. TURN RIGHT ONTO THE DIRT ROAD AND TRAVEL EAST FOR 0.2 MI
 JV7092'(0.3 KM) TO SIDEROAD LEFT. TURN LEFT AND TRAVEL NORTH FOR 0.1 MI
 JV7092'(0.2 KM) TO THE STATION ON THE LEFT.
 JV7092'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7092'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7092'T.S. 20300 MC. THE DISK IS LOCATED 0.65 M (2.13 FT) NORTH OF A
 JV7092'WITNESS POST, AND 17 M (55.8 FT) SOUTH OF THE CENTER OF A CUL-DE-SAC.
 JV7092
 JV7092                          STATION RECOVERY (1994)
 JV7092
 JV7092'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 JV7092'RECOVERED AS DESCRIBED BY MEASUREMENT SCIENCE, INC. (1994).
 JV7092
 JV7092                          STATION RECOVERY (2004)
 JV7092
 JV7092'RECOVERY NOTE BY URS COMPANY 2004
 JV7092'RECOVERED IN GOOD CONDITION.
 JV7092
 JV7092                          STATION RECOVERY (2005)
 JV7092
 JV7092'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7092'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7093 ***********************************************************************
 JV7093  DESIGNATION -  20301
 JV7093  PID         -  JV7093
 JV7093  STATE/COUNTY-  MD/MONTGOMERY
 JV7093  COUNTRY     -  US
 JV7093  USGS QUAD   -  KENSINGTON (2016)
 JV7093
 JV7093                         *CURRENT SURVEY CONTROL
 JV7093  ______________________________________________________________________
 JV7093* NAD 83(2011) POSITION- 39 00 34.85465(N) 077 02 39.07820(W)   ADJUSTED
 JV7093* NAD 83(2011) ELLIP HT-    81.348 (meters)        (06/27/12)   ADJUSTED
 JV7093* NAD 83(2011) EPOCH   -  2010.00
 JV7093* NAVD 88 ORTHO HEIGHT -   113.3   (meters)      372.    (feet) GPS OBS
 JV7093  ______________________________________________________________________
 JV7093  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7093  GEOID HEIGHT    -        -32.300 (meters)                     GEOID93
 JV7093  GEOID HEIGHT    -        -31.935 (meters)                     GEOID18
 JV7093  NAD 83(2011) X  -  1,112,638.117 (meters)                     COMP
 JV7093  NAD 83(2011) Y  - -4,836,379.564 (meters)                     COMP
 JV7093  NAD 83(2011) Z  -  3,993,203.474 (meters)                     COMP
 JV7093  LAPLACE CORR    -         -2.78  (seconds)                    DEFLEC18
 JV7093
 JV7093  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7093  Standards:
 JV7093         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7093            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7093  -------------------------------------------------------------------
 JV7093  NETWORK    1.10   2.14           0.47   0.43   1.09      0.03303803
 JV7093  -------------------------------------------------------------------
 JV7093  Click here for local accuracies and other accuracy information.
 JV7093
 JV7093.The horizontal coordinates were established by GPS observations
 JV7093.and adjusted by the National Geodetic Survey in June 2012.
 JV7093
 JV7093.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7093.been affixed to the stable North American tectonic plate. See 
 JV7093.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7093
 JV7093.The horizontal coordinates are valid at the epoch date displayed above
 JV7093.which is a decimal equivalence of Year/Month/Day.
 JV7093
 JV7093.The orthometric height was determined by GPS observations and a
 JV7093.high-resolution geoid model.
 JV7093
 JV7093.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7093.GEOID18 height accuracy estimate available here.
 JV7093
 JV7093.Click photographs - Photos may exist for this station.
 JV7093
 JV7093.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7093
 JV7093.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7093
 JV7093.The ellipsoidal height was determined by GPS observations
 JV7093.and is referenced to NAD 83.
 JV7093
 JV7093. The following values were computed from the NAD 83(2011) position.
 JV7093
 JV7093;                    North         East     Units Scale Factor Converg.
 JV7093;SPC MD       -   149,081.919   396,172.822   MT  0.99995257   -0 01 39.8
 JV7093;SPC MD       -   489,112.93  1,299,777.00   sFT  0.99995257   -0 01 39.8
 JV7093;SPC VA N     - 2,150,075.785 3,626,085.691   MT  0.99997176   +0 54 31.0
 JV7093;SPC VA N     - 7,054,040.30 11,896,582.80   sFT  0.99997176   +0 54 31.0
 JV7093;UTM  18      - 4,319,838.872   323,006.388   MT  0.99998575   -1 17 13.4
 JV7093
 JV7093!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7093!SPC MD       -   0.99998724  x   0.99995257  =   0.99993981
 JV7093!SPC VA N     -   0.99998724  x   0.99997176  =   0.99995900
 JV7093!UTM  18      -   0.99998724  x   0.99998575  =   0.99997299
 JV7093
 JV7093:                Primary Azimuth Mark                     Grid Az
 JV7093:SPC MD       -  20344                                    285 42 20.9
 JV7093:SPC VA N     -  20344                                    284 46 10.1
 JV7093:UTM  18      -  20344                                    286 57 54.5
 JV7093
 JV7093_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2300619838(NAD 83)
 JV7093
 JV7093|---------------------------------------------------------------------|
 JV7093| PID    Reference Object                     Distance      Geod. Az  |
 JV7093|                                                           dddmmss.s |
 JV7093| JV7136 20344                               428.765 METERS 2854041.1 |
 JV7093|---------------------------------------------------------------------|
 JV7093
 JV7093                          SUPERSEDED SURVEY CONTROL
 JV7093
 JV7093  NAD 83(2007)-  39 00 34.85488(N)    077 02 39.07906(W) AD(2002.00) 0
 JV7093  ELLIP H (02/10/07)   81.377  (m)                       GP(2002.00)    
 JV7093  ELLIP H (08/30/02)   81.380  (m)                       GP(       ) 4 2
 JV7093  NAD 83(1991)-  39 00 34.85476(N)    077 02 39.07942(W) AD(       ) 1
 JV7093  ELLIP H (01/11/94)   81.307  (m)                       GP(       ) 4 1
 JV7093
 JV7093.Superseded values are not recommended for survey control.
 JV7093
 JV7093.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7093.See file dsdata.pdf to determine how the superseded data were derived.
 JV7093
 JV7093_MARKER: DD = SURVEY DISK
 JV7093_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7093_STAMPING: T.S. 20301 MC
 JV7093_MARK LOGO: WSSC
 JV7093_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7093_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7093+STABILITY: SURFACE MOTION
 JV7093_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7093+SATELLITE: SATELLITE OBSERVATIONS - April 12, 2008
 JV7093
 JV7093  HISTORY     - Date     Condition        Report By
 JV7093  HISTORY     - 1993     MONUMENTED       MSI
 JV7093  HISTORY     - 20020826 GOOD             INDIV
 JV7093  HISTORY     - 20050405 GOOD             USPSQD
 JV7093  HISTORY     - 20080412 GOOD             NGS
 JV7093  HISTORY     - 20090512 GOOD             JMTMD
 JV7093
 JV7093                          STATION DESCRIPTION
 JV7093
 JV7093'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7093'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7093'2.8 MI (4.5 KM) NORTHEAST OF THE TOWN OF CHEVY CHASE.  TO REACH THE
 JV7093'STATION FROM THE INTERSECTION OF VEIRS MILL ROAD (S.R. 586) AND
 JV7093'GEORGIA AVENUE (S.R. 97), PROCEED SOUTH ON GEORGIA AVENUE FOR 1.9 MI
 JV7093'(3.1 KM) TO THE INTERSECTION WITH SEMINARY ROAD (S.R. 391).  TURN
 JV7093'RIGHT AND TRAVEL WEST ON SEMINARY ROAD FOR 0.2 MI (0.3 KM) TO THE
 JV7093'STATION ON THE LEFT, IN A GRASS MEDIAN.
 JV7093'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7093'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7093'T.S. 20301 MC. THE DISK IS LOCATED 4.7 FT (1.4 M) SOUTH OF POWER
 JV7093'POLE NO. USB387SPC0440, 14.7 FT (4.5 M) NORTHWEST OF A MANHOLE, AND
 JV7093'47.3 FT (14.4 M) NORTHEAST OF PEPCO POWER POLE NO. 787428-3442.
 JV7093
 JV7093                          STATION RECOVERY (2002)
 JV7093
 JV7093'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (BAP)
 JV7093'RECOVERED IN GOOD CONDITION.
 JV7093
 JV7093                          STATION RECOVERY (2005)
 JV7093
 JV7093'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7093'RECOVERED IN GOOD CONDITION.
 JV7093
 JV7093                          STATION RECOVERY (2008)
 JV7093
 JV7093'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7093'RECOVERED IN GOOD CONDITION.
 JV7093
 JV7093                          STATION RECOVERY (2009)
 JV7093
 JV7093'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 JV7093'POOR SITE FOR GPS - LOTS OF TREES
 JV7093'(X,Y,Z, NOT CHECKED)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7095 ***********************************************************************
 JV7095  DESIGNATION -  20303
 JV7095  PID         -  JV7095
 JV7095  STATE/COUNTY-  MD/MONTGOMERY
 JV7095  COUNTRY     -  US
 JV7095  USGS QUAD   -  SENECA (2016)
 JV7095
 JV7095                         *CURRENT SURVEY CONTROL
 JV7095  ______________________________________________________________________
 JV7095* NAD 83(2011) POSITION- 39 03 29.30753(N) 077 16 42.98281(W)   ADJUSTED
 JV7095* NAD 83(2011) ELLIP HT-    69.751 (meters)        (06/27/12)   ADJUSTED
 JV7095* NAD 83(2011) EPOCH   -  2010.00
 JV7095* NAVD 88 ORTHO HEIGHT -   101.5   (meters)      333.    (feet) GPS OBS
 JV7095  ______________________________________________________________________
 JV7095  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7095  GEOID HEIGHT    -        -32.130 (meters)                     GEOID93
 JV7095  GEOID HEIGHT    -        -31.748 (meters)                     GEOID18
 JV7095  NAD 83(2011) X  -  1,092,093.388 (meters)                     COMP
 JV7095  NAD 83(2011) Y  - -4,837,577.566 (meters)                     COMP
 JV7095  NAD 83(2011) Z  -  3,997,375.063 (meters)                     COMP
 JV7095  LAPLACE CORR    -          2.33  (seconds)                    DEFLEC18
 JV7095
 JV7095  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7095  Standards:
 JV7095         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7095            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7095  -------------------------------------------------------------------
 JV7095  NETWORK    1.28   2.55           0.55   0.49   1.30      0.07057208
 JV7095  -------------------------------------------------------------------
 JV7095  Click here for local accuracies and other accuracy information.
 JV7095
 JV7095.The horizontal coordinates were established by GPS observations
 JV7095.and adjusted by the National Geodetic Survey in June 2012.
 JV7095
 JV7095.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7095.been affixed to the stable North American tectonic plate. See 
 JV7095.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7095
 JV7095.The horizontal coordinates are valid at the epoch date displayed above
 JV7095.which is a decimal equivalence of Year/Month/Day.
 JV7095
 JV7095.The orthometric height was determined by GPS observations and a
 JV7095.high-resolution geoid model.
 JV7095
 JV7095.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7095.GEOID18 height accuracy estimate available here.
 JV7095
 JV7095.Click photographs - Photos may exist for this station.
 JV7095
 JV7095.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7095
 JV7095.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7095
 JV7095.The ellipsoidal height was determined by GPS observations
 JV7095.and is referenced to NAD 83.
 JV7095
 JV7095. The following values were computed from the NAD 83(2011) position.
 JV7095
 JV7095;                    North         East     Units Scale Factor Converg.
 JV7095;SPC MD       -   154,497.286   375,886.224   MT  0.99995490   -0 10 29.5
 JV7095;SPC MD       -   506,879.85  1,233,220.05   sFT  0.99995490   -0 10 29.5
 JV7095;SPC VA N     - 2,155,158.879 3,605,712.841   MT  0.99997790   +0 45 44.3
 JV7095;SPC VA N     - 7,070,717.09 11,829,742.88   sFT  0.99997790   +0 45 44.3
 JV7095;UTM  18      - 4,325,699.585   302,842.242   MT  1.00007865   -1 26 10.4
 JV7095
 JV7095!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7095!SPC MD       -   0.99998906  x   0.99995490  =   0.99994396
 JV7095!SPC VA N     -   0.99998906  x   0.99997790  =   0.99996696
 JV7095!UTM  18      -   0.99998906  x   1.00007865  =   1.00006771
 JV7095
 JV7095_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0284225699(NAD 83)
 JV7095
 JV7095                          SUPERSEDED SURVEY CONTROL
 JV7095
 JV7095  NAD 83(2007)-  39 03 29.30773(N)    077 16 42.98352(W) AD(2002.00) 0
 JV7095  ELLIP H (02/10/07)   69.777  (m)                       GP(2002.00)    
 JV7095  ELLIP H (08/30/02)   69.823  (m)                       GP(       ) 4 2
 JV7095  NAD 83(1993)-  39 03 29.30739(N)    077 16 42.98372(W) AD(       ) 1
 JV7095  ELLIP H (11/14/94)   69.731  (m)                       GP(       ) 4 2
 JV7095  NAD 83(1991)-  39 03 29.30686(N)    077 16 42.98506(W) AD(       ) 1
 JV7095  ELLIP H (01/11/94)   69.716  (m)                       GP(       ) 4 1
 JV7095
 JV7095.Superseded values are not recommended for survey control.
 JV7095
 JV7095.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7095.See file dsdata.pdf to determine how the superseded data were derived.
 JV7095
 JV7095_MARKER: DD = SURVEY DISK
 JV7095_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7095_STAMPING: T.S. 20303 MC
 JV7095_MARK LOGO: WSSC
 JV7095_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7095_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7095+STABILITY: SURFACE MOTION
 JV7095_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7095+SATELLITE: SATELLITE OBSERVATIONS - June 18, 2019
 JV7095
 JV7095  HISTORY     - Date     Condition        Report By
 JV7095  HISTORY     - 1993     MONUMENTED       MSI
 JV7095  HISTORY     - 20190618 GOOD             NGS
 JV7095
 JV7095                          STATION DESCRIPTION
 JV7095
 JV7095'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7095'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7095'7.4 MI (11.9 KM) WEST OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7095'FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND  SENECA ROAD (S.R.
 JV7095'112), PROCEED SOUTHEAST ALONG RIVER ROAD FOR APPROXIMATELY 3.0 MI
 JV7095'(4.8 KM) TO THE INTERSECTION WITH TRAVILAH ROAD.  CONTINUE SOUTHEAST
 JV7095'ON RIVER ROAD FOR 0.25 MI (0.40 KM) TO THE INTERSECTION WITH BEALL
 JV7095'SPRING ROAD, AND THE STATION ON THE LEFT.
 JV7095'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7095'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7095'T.S. 20303 MC. THE DISK IS LOCATED 36.5 FT (11.1 M) NORTHEAST OF
 JV7095'THE CENTER LINE OF RIVER ROAD, 27.5 FT (8.4 M) SOUTH OF THE TOP OF A
 JV7095'CONCRETE CULVERT, AND 30.5 FT (9.3 M) WEST OF THE END OF CURB ON THE
 JV7095'WEST SIDE OF BEALL SPRING ROAD.
 JV7095
 JV7095                          STATION RECOVERY (2019)
 JV7095
 JV7095'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV7095'THE MARK IS 19.2 FT (5.9 M) EAST OF THE WEST END OF THE CURB ALONG
 JV7095'RIVER ROAD AND 30 FT (9.1 M) WEST OF THE NORTHEAST END OF THE CURB
 JV7095'ALONG BEALL SPRING ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7096 ***********************************************************************
 JV7096  DESIGNATION -  20304
 JV7096  PID         -  JV7096
 JV7096  STATE/COUNTY-  MD/MONTGOMERY
 JV7096  COUNTRY     -  US
 JV7096  USGS QUAD   -  SENECA (2016)
 JV7096
 JV7096                         *CURRENT SURVEY CONTROL
 JV7096  ______________________________________________________________________
 JV7096* NAD 83(2011) POSITION- 39 05 23.86880(N) 077 16 40.93743(W)   ADJUSTED
 JV7096* NAD 83(2011) ELLIP HT-    72.640 (meters)        (06/27/12)   ADJUSTED
 JV7096* NAD 83(2011) EPOCH   -  2010.00
 JV7096* NAVD 88 ORTHO HEIGHT -   104.4   (meters)      343.    (feet) GPS OBS
 JV7096  ______________________________________________________________________
 JV7096  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7096  GEOID HEIGHT    -        -32.150 (meters)                     GEOID93
 JV7096  GEOID HEIGHT    -        -31.769 (meters)                     GEOID18
 JV7096  NAD 83(2011) X  -  1,091,651.453 (meters)                     COMP
 JV7096  NAD 83(2011) Y  - -4,835,396.731 (meters)                     COMP
 JV7096  NAD 83(2011) Z  -  4,000,119.574 (meters)                     COMP
 JV7096  LAPLACE CORR    -          2.41  (seconds)                    DEFLEC18
 JV7096
 JV7096  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7096  Standards:
 JV7096         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7096            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7096  -------------------------------------------------------------------
 JV7096  NETWORK    1.45   2.86           0.64   0.53   1.46      0.14173433
 JV7096  -------------------------------------------------------------------
 JV7096  Click here for local accuracies and other accuracy information.
 JV7096
 JV7096.The horizontal coordinates were established by GPS observations
 JV7096.and adjusted by the National Geodetic Survey in June 2012.
 JV7096
 JV7096.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7096.been affixed to the stable North American tectonic plate. See 
 JV7096.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7096
 JV7096.The horizontal coordinates are valid at the epoch date displayed above
 JV7096.which is a decimal equivalence of Year/Month/Day.
 JV7096
 JV7096.The orthometric height was determined by GPS observations and a
 JV7096.high-resolution geoid model.
 JV7096
 JV7096.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7096.GEOID18 height accuracy estimate available here.
 JV7096
 JV7096.Click photographs - Photos may exist for this station.
 JV7096
 JV7096.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7096
 JV7096.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7096
 JV7096.The ellipsoidal height was determined by GPS observations
 JV7096.and is referenced to NAD 83.
 JV7096
 JV7096. The following values were computed from the NAD 83(2011) position.
 JV7096
 JV7096;                    North         East     Units Scale Factor Converg.
 JV7096;SPC MD       -   158,029.807   375,946.159   MT  0.99995681   -0 10 28.2
 JV7096;SPC MD       -   518,469.46  1,233,416.69   sFT  0.99995681   -0 10 28.2
 JV7096;SPC VA N     - 2,158,691.994 3,605,714.990   MT  0.99998232   +0 45 45.5
 JV7096;SPC VA N     - 7,082,308.65 11,829,749.93   sFT  0.99998232   +0 45 45.5
 JV7096;UTM  18      - 4,329,230.362   302,979.971   MT  1.00007798   -1 26 12.7
 JV7096
 JV7096!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7096!SPC MD       -   0.99998860  x   0.99995681  =   0.99994541
 JV7096!SPC VA N     -   0.99998860  x   0.99998232  =   0.99997092
 JV7096!UTM  18      -   0.99998860  x   1.00007798  =   1.00006658
 JV7096
 JV7096_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0297929230(NAD 83)
 JV7096
 JV7096                          SUPERSEDED SURVEY CONTROL
 JV7096
 JV7096  NAD 83(2007)-  39 05 23.86900(N)    077 16 40.93816(W) AD(2002.00) 0
 JV7096  ELLIP H (02/10/07)   72.667  (m)                       GP(2002.00)    
 JV7096  ELLIP H (08/30/02)   72.695  (m)                       GP(       ) 4 2
 JV7096  NAD 83(1993)-  39 05 23.86852(N)    077 16 40.93845(W) AD(       ) 1
 JV7096  ELLIP H (11/14/94)   72.610  (m)                       GP(       ) 4 2
 JV7096  NAD 83(1991)-  39 05 23.86820(N)    077 16 40.93903(W) AD(       ) 1
 JV7096  ELLIP H (01/11/94)   72.609  (m)                       GP(       ) 4 1
 JV7096
 JV7096.Superseded values are not recommended for survey control.
 JV7096
 JV7096.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7096.See file dsdata.pdf to determine how the superseded data were derived.
 JV7096
 JV7096_MARKER: DD = SURVEY DISK
 JV7096_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7096_STAMPING: T.S. 20304 MC
 JV7096_MARK LOGO: WSSC
 JV7096_PROJECTION: FLUSH
 JV7096_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7096_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7096+STABILITY: SURFACE MOTION
 JV7096_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7096+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2013
 JV7096
 JV7096  HISTORY     - Date     Condition        Report By
 JV7096  HISTORY     - 1993     MONUMENTED       MSI
 JV7096  HISTORY     - 20030317 GOOD             INDIV
 JV7096  HISTORY     - 20050405 GOOD             USPSQD
 JV7096  HISTORY     - 20130909 GOOD             BASE9
 JV7096
 JV7096                          STATION DESCRIPTION
 JV7096
 JV7096'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7096'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7096'3.5 MI (5.6 KM) SOUTHWEST OF GAITHERSBURG.  TO REACH THE STATION FROM
 JV7096'THE INTERSECTION OF DARNESTOWN ROAD (S.R. 28) AND SENECA ROAD (S.R.
 JV7096'112), PROCEED EAST ALONG DARNESTOWN ROAD FOR 0.3 MI (0.5 KM) TO THE
 JV7096'INTERSECTION WITH TURKEY FOOT ROAD.  TURN RIGHT AND PROCEED SOUTH AND
 JV7096'EAST ALONG TURKEY FOOT ROAD FOR 0.9 MI (1.4 KM) TO THE INTERSECTION
 JV7096'WITH FALLING LEAF DRIVE.  TURN RIGHT AND PROCEED SOUTH ALONG FALLING
 JV7096'LEAF DRIVE FOR 0.15 MI (0.24 KM) TO THE INTERSECTION WITH WHITE WATER
 JV7096'WAY.  TURN RIGHT AND PROCEED SOUTH ON WHITE WATER WAY FOR 0.2 MI
 JV7096'(0.3 KM) TO THE STATION ON THE RIGHT.
 JV7096'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7096'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7096'T.S. 20304 MC. THE DISK IS LOCATED 14.7 FT (4.5 M) WEST OF THE
 JV7096'CENTERLINE OF WHITE WATER WAY, 58.0 FT (17.7 M) NORTHWEST OF THE
 JV7096'CENTERLINE OF THE DRIVEWAY TO HOUSE NO. 14209 AT THE EDGE OF THE
 JV7096'PAVEMENT, AND 126.0 FT (38.4 M) SOUTH OF THE CENTERLINE OF THE
 JV7096'DRIVEWAY TO HOUSE NO. 14301 AT THE EDGE OF THE PAVEMENT.
 JV7096
 JV7096                          STATION RECOVERY (2003)
 JV7096
 JV7096'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (PJT)
 JV7096'RECOVERED AS DESCRIBED
 JV7096
 JV7096                          STATION RECOVERY (2005)
 JV7096
 JV7096'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7096'RECOVERED IN GOOD CONDITION.
 JV7096
 JV7096                          STATION RECOVERY (2013)
 JV7096
 JV7096'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV7096'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7097 ***********************************************************************
 JV7097  CBN         -  This is a Cooperative Base Network Control Station.
 JV7097  DESIGNATION -  20305
 JV7097  PID         -  JV7097
 JV7097  STATE/COUNTY-  MD/MONTGOMERY
 JV7097  COUNTRY     -  US
 JV7097  USGS QUAD   -  ROCKVILLE (2016)
 JV7097
 JV7097                         *CURRENT SURVEY CONTROL
 JV7097  ______________________________________________________________________
 JV7097* NAD 83(2011) POSITION- 39 01 00.31746(N) 077 12 18.26158(W)   ADJUSTED
 JV7097* NAD 83(2011) ELLIP HT-    79.605 (meters)        (06/27/12)   ADJUSTED
 JV7097* NAD 83(2011) EPOCH   -  2010.00
 JV7097* NAVD 88 ORTHO HEIGHT -   111.304 (meters)      365.17  (feet) ADJUSTED
 JV7097  ______________________________________________________________________
 JV7097  GEOID HEIGHT    -        -31.721 (meters)                     GEOID18
 JV7097  NAD 83(2011) X  -  1,098,943.619 (meters)                     COMP
 JV7097  NAD 83(2011) Y  - -4,839,001.392 (meters)                     COMP
 JV7097  NAD 83(2011) Z  -  3,993,812.497 (meters)                     COMP
 JV7097  LAPLACE CORR    -         -1.41  (seconds)                    DEFLEC18
 JV7097  DYNAMIC HEIGHT  -        111.246 (meters)      364.98  (feet) COMP
 JV7097  MODELED GRAVITY -    980,107.4   (mgal)                       NAVD 88
 JV7097
 JV7097  VERT ORDER      -  SECOND    CLASS I
 JV7097
 JV7097  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7097  Standards:
 JV7097         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7097            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7097  -------------------------------------------------------------------
 JV7097  NETWORK    0.48   1.00           0.22   0.17   0.51      0.00880198
 JV7097  -------------------------------------------------------------------
 JV7097  Click here for local accuracies and other accuracy information.
 JV7097
 JV7097.The horizontal coordinates were established by GPS observations
 JV7097.and adjusted by the National Geodetic Survey in June 2012.
 JV7097
 JV7097.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7097.been affixed to the stable North American tectonic plate. See 
 JV7097.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7097
 JV7097.The horizontal coordinates are valid at the epoch date displayed above
 JV7097.which is a decimal equivalence of Year/Month/Day.
 JV7097
 JV7097.The orthometric height was determined by differential leveling and
 JV7097.adjusted by the NATIONAL GEODETIC SURVEY
 JV7097.in November 2003.
 JV7097
 JV7097.No vertical observational check was made to the station.
 JV7097
 JV7097.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7097.GEOID18 height accuracy estimate available here.
 JV7097
 JV7097.Click photographs - Photos may exist for this station.
 JV7097
 JV7097.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7097
 JV7097.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7097
 JV7097.The ellipsoidal height was determined by GPS observations
 JV7097.and is referenced to NAD 83.
 JV7097
 JV7097.The dynamic height is computed by dividing the NAVD 88
 JV7097.geopotential number by the normal gravity value computed on the
 JV7097.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7097.degrees latitude (g = 980.6199 gals.).
 JV7097
 JV7097.The modeled gravity was interpolated from observed gravity values.
 JV7097
 JV7097. The following values were computed from the NAD 83(2011) position.
 JV7097
 JV7097;                    North         East     Units Scale Factor Converg.
 JV7097;SPC MD       -   149,886.118   382,240.335   MT  0.99995286   -0 07 43.4
 JV7097;SPC MD       -   491,751.37  1,254,066.83   sFT  0.99995286   -0 07 43.4
 JV7097;SPC VA N     - 2,150,652.144 3,612,141.648   MT  0.99997261   +0 48 29.5
 JV7097;SPC VA N     - 7,055,931.24 11,850,834.72   sFT  0.99997261   +0 48 29.5
 JV7097;UTM  18      - 4,320,949.219   309,094.054   MT  1.00004878   -1 23 19.0
 JV7097
 JV7097!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7097!SPC MD       -   0.99998751  x   0.99995286  =   0.99994037
 JV7097!SPC VA N     -   0.99998751  x   0.99997261  =   0.99996012
 JV7097!UTM  18      -   0.99998751  x   1.00004878  =   1.00003629
 JV7097
 JV7097_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0909420949(NAD 83)
 JV7097
 JV7097                          SUPERSEDED SURVEY CONTROL
 JV7097
 JV7097  NAD 83(2007)-  39 01 00.31781(N)    077 12 18.26228(W) AD(2002.00) 0
 JV7097  ELLIP H (02/10/07)   79.634  (m)                       GP(2002.00)    
 JV7097  NAD 83(1991)-  39 01 00.31786(N)    077 12 18.26226(W) AD(       ) A
 JV7097  ELLIP H (02/12/02)   79.636  (m)                       GP(       ) 4 1
 JV7097  NAD 83(1993)-  39 01 00.31745(N)    077 12 18.26292(W) AD(       ) 1
 JV7097  ELLIP H (11/14/94)   79.576  (m)                       GP(       ) 4 2
 JV7097  NAD 83(1991)-  39 01 00.31724(N)    077 12 18.26368(W) AD(       ) 1
 JV7097  ELLIP H (01/11/94)   79.563  (m)                       GP(       ) 4 1
 JV7097  NAVD 88             111.30   (m)          365.2    (f) LEVELING    3  
 JV7097  NAVD 88 (01/11/94)  111.4    (m)  GEOID93  model used  GPS OBS        
 JV7097
 JV7097.Superseded values are not recommended for survey control.
 JV7097
 JV7097.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7097.See file dsdata.pdf to determine how the superseded data were derived.
 JV7097
 JV7097_MARKER: DD = SURVEY DISK
 JV7097_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7097_STAMPING: T.S. 20305 MC
 JV7097_MARK LOGO: WSSC
 JV7097_PROJECTION: FLUSH
 JV7097_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7097_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7097+STABILITY: SURFACE MOTION
 JV7097_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7097+SATELLITE: SATELLITE OBSERVATIONS - September 03, 2020
 JV7097
 JV7097  HISTORY     - Date     Condition        Report By
 JV7097  HISTORY     - 1993     MONUMENTED       MSI
 JV7097  HISTORY     - 20000501 GOOD             MDSHA
 JV7097  HISTORY     - 20010817 GOOD             MDSHA
 JV7097  HISTORY     - 20040302 GOOD             BOWMAN
 JV7097  HISTORY     - 2005     GOOD             GWS
 JV7097  HISTORY     - 20070222 GOOD             INDIV
 JV7097  HISTORY     - 20080226 GOOD             INDIV
 JV7097  HISTORY     - 20130529 GOOD             GEOMET
 JV7097  HISTORY     - 20200321 GOOD             NGS
 JV7097  HISTORY     - 20200903 GOOD             NGS
 JV7097
 JV7097                          STATION DESCRIPTION
 JV7097
 JV7097'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7097'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7097'0.2 MI (0.3 KM) EAST OF THE TOWN OF POTOMAC.  TO REACH THE STATION
 JV7097'FROM THE INTERSECTION OF FALLS ROAD (S.R. 189) AND RIVER ROAD (S.R.
 JV7097'190) IN POTOMAC, PROCEED SOUTHEAST ALONG RIVER ROAD FOR 0.2 MI
 JV7097'(0.3 KM) TO INTERSECTION WITH HALL ROAD.  TURN LEFT AND TRAVEL
 JV7097'NORTHEAST ON HALL ROAD FOR APPROXIMATELY 300 FT (91.4 M) TO THE
 JV7097'INTERSECTION WITH HALL COURT, AND STATION ON THE LEFT, IN THE
 JV7097'NORTHWEST CORNER OF THE INTERSECTION.
 JV7097'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7097'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7097'T.S. 20305 MC. THE DISK IS LOCATED 18.0 FT (5.5 M) NORTHEAST OF THE
 JV7097'CENTER LINE OF HALL COURT, 25.6 FT (7.8 M) NORTHWEST OF THE CENTER
 JV7097'LINE OF HALL ROAD, AND 7.8 FT (2.4 M) WEST OF A METAL LIGHT POLE.
 JV7097
 JV7097                          STATION RECOVERY (2000)
 JV7097
 JV7097'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV7097'RECOVERED AS DESCRIBED.
 JV7097
 JV7097                          STATION RECOVERY (2001)
 JV7097
 JV7097'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV7097'RECOVERED AS DESCRIBED.
 JV7097
 JV7097                          STATION RECOVERY (2004)
 JV7097
 JV7097'RECOVERY NOTE BY BOWMAN CONSULTING GROUP 2004 (PJT)
 JV7097'RECOVERED AS DESCRIBED
 JV7097
 JV7097                          STATION RECOVERY (2005)
 JV7097
 JV7097'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2005 (WEH)
 JV7097'RECOVERED AS DESCRIBED.
 JV7097
 JV7097                          STATION RECOVERY (2007)
 JV7097
 JV7097'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (WRA)
 JV7097'RECOVERED IN GOOD CONDITION
 JV7097
 JV7097                          STATION RECOVERY (2008)
 JV7097
 JV7097'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2008 (WRA)
 JV7097'DESCRIPTION IS ADEQUATE
 JV7097
 JV7097                          STATION RECOVERY (2013)
 JV7097
 JV7097'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2013 (ANH)
 JV7097'RECOVERED AS DESCRIBED.
 JV7097
 JV7097                          STATION RECOVERY (2020)
 JV7097
 JV7097'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (KMA)
 JV7097'RECOVERED IN GOOD CONDITION.
 JV7097
 JV7097                          STATION RECOVERY (2020)
 JV7097
 JV7097'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (RA)
 JV7097'THERE IS A STREET SIGN STREET LIGHT 7.6 FT (2.3 M) EAST OF THE STATION
 JV7097'AND IS APPROXIMATELY 13 FT (4.0 M) TALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7098 ***********************************************************************
 JV7098  DESIGNATION -  20306
 JV7098  PID         -  JV7098
 JV7098  STATE/COUNTY-  MD/MONTGOMERY
 JV7098  COUNTRY     -  US
 JV7098  USGS QUAD   -  SENECA (2016)
 JV7098
 JV7098                         *CURRENT SURVEY CONTROL
 JV7098  ______________________________________________________________________
 JV7098* NAD 83(2011) POSITION- 39 05 50.43930(N) 077 15 14.06907(W)   ADJUSTED
 JV7098* NAD 83(2011) ELLIP HT-    75.699 (meters)        (06/27/12)   ADJUSTED
 JV7098* NAD 83(2011) EPOCH   -  2010.00
 JV7098* NAVD 88 ORTHO HEIGHT -   107.5   (meters)      353.    (feet) GPS OBS
 JV7098  ______________________________________________________________________
 JV7098  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7098  GEOID HEIGHT    -        -32.120 (meters)                     GEOID93
 JV7098  GEOID HEIGHT    -        -31.746 (meters)                     GEOID18
 JV7098  NAD 83(2011) X  -  1,093,574.305 (meters)                     COMP
 JV7098  NAD 83(2011) Y  - -4,834,434.901 (meters)                     COMP
 JV7098  NAD 83(2011) Z  -  4,000,757.448 (meters)                     COMP
 JV7098  LAPLACE CORR    -          1.88  (seconds)                    DEFLEC18
 JV7098
 JV7098  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7098  Standards:
 JV7098         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7098            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7098  -------------------------------------------------------------------
 JV7098  NETWORK    1.25   2.47           0.54   0.48   1.26      0.06052978
 JV7098  -------------------------------------------------------------------
 JV7098  Click here for local accuracies and other accuracy information.
 JV7098
 JV7098.The horizontal coordinates were established by GPS observations
 JV7098.and adjusted by the National Geodetic Survey in June 2012.
 JV7098
 JV7098.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7098.been affixed to the stable North American tectonic plate. See 
 JV7098.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7098
 JV7098.The horizontal coordinates are valid at the epoch date displayed above
 JV7098.which is a decimal equivalence of Year/Month/Day.
 JV7098
 JV7098.The orthometric height was determined by GPS observations and a
 JV7098.high-resolution geoid model.
 JV7098
 JV7098.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7098.GEOID18 height accuracy estimate available here.
 JV7098
 JV7098.Click photographs - Photos may exist for this station.
 JV7098
 JV7098.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7098
 JV7098.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7098
 JV7098.The ellipsoidal height was determined by GPS observations
 JV7098.and is referenced to NAD 83.
 JV7098
 JV7098. The following values were computed from the NAD 83(2011) position.
 JV7098
 JV7098;                    North         East     Units Scale Factor Converg.
 JV7098;SPC MD       -   158,843.071   378,035.993   MT  0.99995730   -0 09 33.7
 JV7098;SPC MD       -   521,137.64  1,240,273.09   sFT  0.99995730   -0 09 33.7
 JV7098;SPC VA N     - 2,159,539.350 3,607,791.297   MT  0.99998339   +0 46 39.7
 JV7098;SPC VA N     - 7,085,088.68 11,836,561.95   sFT  0.99998339   +0 46 39.7
 JV7098;UTM  18      - 4,329,997.476   305,087.460   MT  1.00006781   -1 25 18.7
 JV7098
 JV7098!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7098!SPC MD       -   0.99998812  x   0.99995730  =   0.99994542
 JV7098!SPC VA N     -   0.99998812  x   0.99998339  =   0.99997151
 JV7098!UTM  18      -   0.99998812  x   1.00006781  =   1.00005593
 JV7098
 JV7098_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0508729997(NAD 83)
 JV7098
 JV7098                          SUPERSEDED SURVEY CONTROL
 JV7098
 JV7098  NAD 83(2007)-  39 05 50.43951(N)    077 15 14.06979(W) AD(2002.00) 0
 JV7098  ELLIP H (02/10/07)   75.725  (m)                       GP(2002.00)    
 JV7098  ELLIP H (08/30/02)   75.750  (m)                       GP(       ) 4 2
 JV7098  NAD 83(1993)-  39 05 50.43906(N)    077 15 14.07009(W) AD(       ) 1
 JV7098  NAD 83(1991)-  39 05 50.43888(N)    077 15 14.07061(W) AD(       ) 1
 JV7098  ELLIP H (01/11/94)   75.664  (m)                       GP(       ) 4 1
 JV7098
 JV7098.Superseded values are not recommended for survey control.
 JV7098
 JV7098.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7098.See file dsdata.pdf to determine how the superseded data were derived.
 JV7098
 JV7098_MARKER: DD = SURVEY DISK
 JV7098_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7098_STAMPING: T.S. 20306 MC
 JV7098_MARK LOGO: WSSC
 JV7098_PROJECTION: FLUSH
 JV7098_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7098_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7098+STABILITY: SURFACE MOTION
 JV7098_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7098+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2013
 JV7098
 JV7098  HISTORY     - Date     Condition        Report By
 JV7098  HISTORY     - 1993     MONUMENTED       MSI
 JV7098  HISTORY     - 20011113 GOOD             DMW
 JV7098  HISTORY     - 20030609 GOOD             POWELL
 JV7098  HISTORY     - 20130909 GOOD             BASE9
 JV7098
 JV7098                          STATION DESCRIPTION
 JV7098
 JV7098'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7098'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7098'6.0 MI (9.7 KM) WEST OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7098'FROM THE INTERSECTION OF DARNESTOWN ROAD (S.R. 28) AND QUINCE ORCHARD
 JV7098'ROAD (S.R. 124), PROCEED SOUTH ON QUINCE ORCHARD ROAD FOR 1.3 MI
 JV7098'(2.1 KM) TO THE INTERSECTION WITH HORSE CENTER ROAD.  TURN RIGHT AND
 JV7098'TRAVEL WEST ON HORSE CENTER ROAD FOR 0.1 MI (0.2 KM) TO OVERHEAD
 JV7098'POWER LINES, AND THE STATION ON RIGHT.
 JV7098'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7098'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7098'T.S. 20306 MC. THE DISK IS LOCATED 91.5 FT (27.9 M) SOUTHWEST OF
 JV7098'POWER POLE NO. 727460-9244, 115.5 FT (35.2 M) NORTHWEST OF THE SOUTH
 JV7098'CORNER OF A WOODEN FENCE ON THE EAST SIDE OF THE POWER LINES, AND
 JV7098'99.4 FT (30.3 M) NORTH OF CENTER LINE OF THE ENTRANCE ROAD AT THE
 JV7098'CABLE FENCE LINE.
 JV7098
 JV7098                          STATION RECOVERY (2001)
 JV7098
 JV7098'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV7098'RECOVERY NOTE BY DMW 2001.
 JV7098'RECOVERED IN GOOD CONDITION.
 JV7098
 JV7098                          STATION RECOVERY (2003)
 JV7098
 JV7098'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2003 (BAP)
 JV7098'RECOVERED IN GOOD CONDITION.
 JV7098
 JV7098                          STATION RECOVERY (2013)
 JV7098
 JV7098'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV7098'MARK IS 8.2 M (26.9 FT) EAST OF THE APPROXIMATE CENTER OF THE DIRT
 JV7098'ROAD THAT RUNS THROUGH THE POWER LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7099 ***********************************************************************
 JV7099  DESIGNATION -  20307
 JV7099  PID         -  JV7099
 JV7099  STATE/COUNTY-  MD/MONTGOMERY
 JV7099  COUNTRY     -  US
 JV7099  USGS QUAD   -  GERMANTOWN (2016)
 JV7099
 JV7099                         *CURRENT SURVEY CONTROL
 JV7099  ______________________________________________________________________
 JV7099* NAD 83(2011) POSITION- 39 08 56.05522(N) 077 18 11.27330(W)   ADJUSTED
 JV7099* NAD 83(2011) ELLIP HT-   103.538 (meters)        (06/27/12)   ADJUSTED
 JV7099* NAD 83(2011) EPOCH   -  2010.00
 JV7099* NAVD 88 ORTHO HEIGHT -   135.4   (meters)      444.    (feet) GPS OBS
 JV7099  ______________________________________________________________________
 JV7099  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7099  GEOID HEIGHT    -        -32.230 (meters)                     GEOID93
 JV7099  GEOID HEIGHT    -        -31.866 (meters)                     GEOID18
 JV7099  NAD 83(2011) X  -  1,088,631.470 (meters)                     COMP
 JV7099  NAD 83(2011) Y  - -4,831,870.130 (meters)                     COMP
 JV7099  NAD 83(2011) Z  -  4,005,215.769 (meters)                     COMP
 JV7099  LAPLACE CORR    -          3.62  (seconds)                    DEFLEC18
 JV7099
 JV7099  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7099  Standards:
 JV7099         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7099            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7099  -------------------------------------------------------------------
 JV7099  NETWORK    1.42   2.65           0.62   0.53   1.35      0.16709577
 JV7099  -------------------------------------------------------------------
 JV7099  Click here for local accuracies and other accuracy information.
 JV7099
 JV7099.The horizontal coordinates were established by GPS observations
 JV7099.and adjusted by the National Geodetic Survey in June 2012.
 JV7099
 JV7099.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7099.been affixed to the stable North American tectonic plate. See 
 JV7099.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7099
 JV7099.The horizontal coordinates are valid at the epoch date displayed above
 JV7099.which is a decimal equivalence of Year/Month/Day.
 JV7099
 JV7099.The orthometric height was determined by GPS observations and a
 JV7099.high-resolution geoid model.
 JV7099
 JV7099.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7099.GEOID18 height accuracy estimate available here.
 JV7099
 JV7099.Click photographs - Photos may exist for this station.
 JV7099
 JV7099.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7099
 JV7099.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7099
 JV7099.The ellipsoidal height was determined by GPS observations
 JV7099.and is referenced to NAD 83.
 JV7099
 JV7099. The following values were computed from the NAD 83(2011) position.
 JV7099
 JV7099;                    North         East     Units Scale Factor Converg.
 JV7099;SPC MD       -   164,579.873   373,797.004   MT  0.99996118   -0 11 24.9
 JV7099;SPC MD       -   539,959.13  1,226,365.67   sFT  0.99996118   -0 11 24.9
 JV7099;UTM  18      - 4,335,827.037   300,975.501   MT  1.00008775   -1 27 16.3
 JV7099
 JV7099!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7099!SPC MD       -   0.99998376  x   0.99996118  =   0.99994494
 JV7099!UTM  18      -   0.99998376  x   1.00008775  =   1.00007150
 JV7099
 JV7099_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0097535827(NAD 83)
 JV7099
 JV7099                          SUPERSEDED SURVEY CONTROL
 JV7099
 JV7099  NAD 83(2007)-  39 08 56.05541(N)    077 18 11.27405(W) AD(2002.00) 0
 JV7099  ELLIP H (02/10/07)  103.566  (m)                       GP(2002.00)    
 JV7099  ELLIP H (08/30/02)  103.574  (m)                       GP(       ) 4 2
 JV7099  NAD 83(1991)-  39 08 56.05492(N)    077 18 11.27425(W) AD(       ) 1
 JV7099  ELLIP H (01/11/94)  103.504  (m)                       GP(       ) 4 1
 JV7099
 JV7099.Superseded values are not recommended for survey control.
 JV7099
 JV7099.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7099.See file dsdata.pdf to determine how the superseded data were derived.
 JV7099
 JV7099_STAMPING: T.S. 20307 MC
 JV7099_MARK LOGO: WSSC
 JV7099_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7099+SATELLITE: SATELLITE OBSERVATIONS - November 21, 2003
 JV7099
 JV7099  HISTORY     - Date     Condition        Report By
 JV7099  HISTORY     - 1993     MONUMENTED       MSI
 JV7099  HISTORY     - 20031121 GOOD             GEOCAC
 JV7099  HISTORY     - 20190613 MARK NOT FOUND   NGS
 JV7099
 JV7099                          STATION DESCRIPTION
 JV7099
 JV7099'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7099'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7099'3.2 MI (5.1 KM) NORTH OF DARNESTOWN.  TO REACH THE STATION FROM THE
 JV7099'INTERSECTION OF DARNESTOWN ROAD (S.R. 28) AND DARNESTOWN-GERMANTOWN
 JV7099'ROAD (S.R. 118), PROCEED NORTH ALONG DARNESTOWN-GERMANTOWN ROAD FOR
 JV7099'2.3 MI (3.7 KM) TO THE INTERSECTION WITH BLACK ROCK ROAD.  TURN LEFT
 JV7099'AND PROCEED 0.35 MI (0.56 KM) NORTHWEST ALONG BLACK ROCK ROAD TO THE
 JV7099'INTERSECTION WITH BURDETTE LANE.  TURN RIGHT AND PROCEED 0.35 MI
 JV7099'(0.56 KM) NORTH ALONG BURDETTE LANE TO THE INTERSECTION WITH
 JV7099'SCHAEFFER ROAD. TURN RIGHT AND PROCEED NORTHEAST ALONG SCHAEFFER ROAD
 JV7099'FOR 0.03 MI (0.05 KM) TO THE STATION ON THE RIGHT, NEAR THE PARKING
 JV7099'AREA FOR THE SOUTH GERMANTOWN RECREATIONAL PARK.
 JV7099'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7099'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7099'T.S. 20307 MC. THE DISK IS LOCATED 71.0 FT (21.6 M) SOUTH-SOUTHEAST
 JV7099'OF THE CENTERLINE OF SCHAEFFER ROAD, 90.3 FT (27.5 M) EAST OF THE
 JV7099'EAST END OF THE CONCRETE CULVERT AT THE WESTERN ENTRANCE TO THE
 JV7099'PARKING AREA, AND 110.1 FT (33.6 M) SOUTH-SOUTHWEST OF THE WEST END
 JV7099'OF THE CONCRETE CULVERT AT THE EASTERN ENTRANCE TO THE PARKING AREA.
 JV7099
 JV7099                          STATION RECOVERY (2003)
 JV7099
 JV7099'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV7099'RECOVERED IN GOOD CONDITION.
 JV7099
 JV7099                          STATION RECOVERY (2019)
 JV7099
 JV7099'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV7099'PULLING REFERENCES PLACED THE MARK IN AN ASPHALT TRAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7100 ***********************************************************************
 JV7100  DESIGNATION -  20308
 JV7100  PID         -  JV7100
 JV7100  STATE/COUNTY-  MD/MONTGOMERY
 JV7100  COUNTRY     -  US
 JV7100  USGS QUAD   -  GERMANTOWN (2016)
 JV7100
 JV7100                         *CURRENT SURVEY CONTROL
 JV7100  ______________________________________________________________________
 JV7100* NAD 83(2011) POSITION- 39 10 55.91827(N) 077 16 43.62467(W)   ADJUSTED
 JV7100* NAD 83(2011) ELLIP HT-   111.726 (meters)        (06/27/12)   ADJUSTED
 JV7100* NAD 83(2011) EPOCH   -  2010.00
 JV7100* NAVD 88 ORTHO HEIGHT -   143.6   (meters)      471.    (feet) GPS OBS
 JV7100  ______________________________________________________________________
 JV7100  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7100  GEOID HEIGHT    -        -32.220 (meters)                     GEOID93
 JV7100  GEOID HEIGHT    -        -31.858 (meters)                     GEOID18
 JV7100  NAD 83(2011) X  -  1,090,171.904 (meters)                     COMP
 JV7100  NAD 83(2011) Y  - -4,829,136.048 (meters)                     COMP
 JV7100  NAD 83(2011) Z  -  4,008,086.896 (meters)                     COMP
 JV7100  LAPLACE CORR    -          3.33  (seconds)                    DEFLEC18
 JV7100
 JV7100  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7100  Standards:
 JV7100         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7100            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7100  -------------------------------------------------------------------
 JV7100  NETWORK    0.77   1.43           0.34   0.27   0.73      0.30001267
 JV7100  -------------------------------------------------------------------
 JV7100  Click here for local accuracies and other accuracy information.
 JV7100
 JV7100.The horizontal coordinates were established by GPS observations
 JV7100.and adjusted by the National Geodetic Survey in June 2012.
 JV7100
 JV7100.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7100.been affixed to the stable North American tectonic plate. See 
 JV7100.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7100
 JV7100.The horizontal coordinates are valid at the epoch date displayed above
 JV7100.which is a decimal equivalence of Year/Month/Day.
 JV7100
 JV7100.The orthometric height was determined by GPS observations and a
 JV7100.high-resolution geoid model.
 JV7100
 JV7100.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7100.GEOID18 height accuracy estimate available here.
 JV7100
 JV7100.Click photographs - Photos may exist for this station.
 JV7100
 JV7100.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7100
 JV7100.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7100
 JV7100.The ellipsoidal height was determined by GPS observations
 JV7100.and is referenced to NAD 83.
 JV7100
 JV7100. The following values were computed from the NAD 83(2011) position.
 JV7100
 JV7100;                    North         East     Units Scale Factor Converg.
 JV7100;SPC MD       -   168,269.408   375,912.851   MT  0.99996411   -0 10 29.9
 JV7100;SPC MD       -   552,063.88  1,233,307.41   sFT  0.99996411   -0 10 29.9
 JV7100;UTM  18      - 4,339,469.409   303,172.531   MT  1.00007704   -1 26 24.6
 JV7100
 JV7100!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7100!SPC MD       -   0.99998247  x   0.99996411  =   0.99994658
 JV7100!UTM  18      -   0.99998247  x   1.00007704  =   1.00005951
 JV7100
 JV7100_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0317239469(NAD 83)
 JV7100
 JV7100                          SUPERSEDED SURVEY CONTROL
 JV7100
 JV7100  NAD 83(2007)-  39 10 55.91847(N)    077 16 43.62544(W) AD(2002.00) 0
 JV7100  ELLIP H (02/10/07)  111.757  (m)                       GP(2002.00)    
 JV7100  ELLIP H (08/30/02)  111.755  (m)                       GP(       ) 4 2
 JV7100  NAD 83(1991)-  39 10 55.91812(N)    077 16 43.62530(W) AD(       ) 1
 JV7100  ELLIP H (01/11/94)  111.687  (m)                       GP(       ) 4 1
 JV7100
 JV7100.Superseded values are not recommended for survey control.
 JV7100
 JV7100.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7100.See file dsdata.pdf to determine how the superseded data were derived.
 JV7100
 JV7100_MARKER: DD = SURVEY DISK
 JV7100_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7100_STAMPING: T.S. 20308 MC
 JV7100_MARK LOGO: WSSC
 JV7100_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7100_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7100+STABILITY: SURFACE MOTION
 JV7100_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7100+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7100
 JV7100  HISTORY     - Date     Condition        Report By
 JV7100  HISTORY     - 1993     MONUMENTED       MSI
 JV7100  HISTORY     - 20040323 MARK NOT FOUND   URS
 JV7100
 JV7100                          STATION DESCRIPTION
 JV7100
 JV7100'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7100'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7100'0.9 MI (1.4 KM) NORTHWEST OF THE TOWN OF GERMANTOWN.  TO REACH THE
 JV7100'STATION FROM THE INTERSECTION OF FREDERICK ROAD (S.R. 355) AND
 JV7100'DARNESTOWN-GERMANTOWN ROAD (S.R. 118), PROCEED SOUTHWEST ON
 JV7100'DARNESTOWN-GERMANTOWN ROAD TO THE INTERSECTION WITH WISTERIA DRIVE.
 JV7100'TURN RIGHT AND TRAVEL NORTHWEST ON WISTERIA DRIVE FOR 0.65 MI
 JV7100'(1.05 KM) TO THE INTERSECTION WITH WINTERSPOON LANE, AND STATION ON
 JV7100'THE RIGHT.
 JV7100'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7100'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7100'T.S. 20308 MC. THE DISK IS LOCATED 90.5 FT (27.6 M) NORTH OF THE
 JV7100'CENTERLINE OF WISTERIA DRIVE, 71.2 FT (21.7 M) NORTHWEST OF FIRE
 JV7100'HYDRANT, AND 28.5 FT (8.7 M) EAST OF THE CENTER LINE OF WINTERSPOON
 JV7100'LANE.
 JV7100
 JV7100                          STATION RECOVERY (2004)
 JV7100
 JV7100'RECOVERY NOTE BY URS COMPANY 2004
 JV7100'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7101 ***********************************************************************
 JV7101  DESIGNATION -  20309
 JV7101  PID         -  JV7101
 JV7101  STATE/COUNTY-  MD/MONTGOMERY
 JV7101  COUNTRY     -  US
 JV7101  USGS QUAD   -  GERMANTOWN (2016)
 JV7101
 JV7101                         *CURRENT SURVEY CONTROL
 JV7101  ______________________________________________________________________
 JV7101* NAD 83(2011) POSITION- 39 11 27.03481(N) 077 18 26.94772(W)   ADJUSTED
 JV7101* NAD 83(2011) ELLIP HT-    95.609 (meters)        (06/27/12)   ADJUSTED
 JV7101* NAD 83(2011) EPOCH   -  2010.00
 JV7101* NAVD 88 ORTHO HEIGHT -   127.6   (meters)      419.    (feet) GPS OBS
 JV7101  ______________________________________________________________________
 JV7101  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7101  GEOID HEIGHT    -        -32.280 (meters)                     GEOID93
 JV7101  GEOID HEIGHT    -        -31.920 (meters)                     GEOID18
 JV7101  NAD 83(2011) X  -  1,087,616.770 (meters)                     COMP
 JV7101  NAD 83(2011) Y  - -4,829,077.841 (meters)                     COMP
 JV7101  NAD 83(2011) Z  -  4,008,820.497 (meters)                     COMP
 JV7101  LAPLACE CORR    -          3.70  (seconds)                    DEFLEC18
 JV7101
 JV7101  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7101  Standards:
 JV7101         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7101            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7101  -------------------------------------------------------------------
 JV7101  NETWORK    1.08   2.08           0.46   0.42   1.06      0.06931640
 JV7101  -------------------------------------------------------------------
 JV7101  Click here for local accuracies and other accuracy information.
 JV7101
 JV7101.The horizontal coordinates were established by GPS observations
 JV7101.and adjusted by the National Geodetic Survey in June 2012.
 JV7101
 JV7101.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7101.been affixed to the stable North American tectonic plate. See 
 JV7101.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7101
 JV7101.The horizontal coordinates are valid at the epoch date displayed above
 JV7101.which is a decimal equivalence of Year/Month/Day.
 JV7101
 JV7101.The orthometric height was determined by GPS observations and a
 JV7101.high-resolution geoid model.
 JV7101
 JV7101.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7101.GEOID18 height accuracy estimate available here.
 JV7101
 JV7101.Click photographs - Photos may exist for this station.
 JV7101
 JV7101.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7101
 JV7101.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7101
 JV7101.The ellipsoidal height was determined by GPS observations
 JV7101.and is referenced to NAD 83.
 JV7101
 JV7101. The following values were computed from the NAD 83(2011) position.
 JV7101
 JV7101;                    North         East     Units Scale Factor Converg.
 JV7101;SPC MD       -   169,236.923   373,436.323   MT  0.99996493   -0 11 34.8
 JV7101;SPC MD       -   555,238.14  1,225,182.34   sFT  0.99996493   -0 11 34.8
 JV7101;UTM  18      - 4,340,491.499   300,717.682   MT  1.00008901   -1 27 30.9
 JV7101
 JV7101!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7101!SPC MD       -   0.99998500  x   0.99996493  =   0.99994993
 JV7101!UTM  18      -   0.99998500  x   1.00008901  =   1.00007401
 JV7101
 JV7101_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0071740491(NAD 83)
 JV7101
 JV7101                          SUPERSEDED SURVEY CONTROL
 JV7101
 JV7101  NAD 83(2007)-  39 11 27.03498(N)    077 18 26.94847(W) AD(2002.00) 0
 JV7101  ELLIP H (02/10/07)   95.635  (m)                       GP(2002.00)    
 JV7101  ELLIP H (08/30/02)   95.626  (m)                       GP(       ) 4 2
 JV7101  NAD 83(1991)-  39 11 27.03465(N)    077 18 26.94837(W) AD(       ) 1
 JV7101  ELLIP H (01/11/94)   95.574  (m)                       GP(       ) 4 1
 JV7101
 JV7101.Superseded values are not recommended for survey control.
 JV7101
 JV7101.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7101.See file dsdata.pdf to determine how the superseded data were derived.
 JV7101
 JV7101_MARKER: DD = SURVEY DISK
 JV7101_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7101_STAMPING: T.S. 20309 MC
 JV7101_MARK LOGO: WSSC
 JV7101_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7101_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7101+STABILITY: SURFACE MOTION
 JV7101_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7101+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7101
 JV7101  HISTORY     - Date     Condition        Report By
 JV7101  HISTORY     - 1993     MONUMENTED       MSI
 JV7101
 JV7101                          STATION DESCRIPTION
 JV7101
 JV7101'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7101'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7101'2.5 MI (4.0 KM) NORTHWEST OF THE TOWN OF GERMANTOWN.  TO REACH THE
 JV7101'STATION FROM THE INTERSECTION OF DARNESTOWN-GERMANTOWN ROAD (S.R.
 JV7101'118)AND CLOPPER ROAD (S.R. 117), PROCEED NORTHWEST ALONG CLOPPER ROAD
 JV7101'FOR 2.3 MI (3.7 KM) TO THE INTERSECTION WITH CLARKSBURG ROAD (S.R.
 JV7101'121). TURN RIGHT AND TRAVEL NORTH ON CLARKSBURG ROAD FOR 0.6 MI
 JV7101'(1.0 KM) TO STATION ON RIGHT.
 JV7101'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7101'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7101'T.S. 20309 MC. THE DISK IS LOCATED 0.7 M (2.3 FT) WEST OF A WITNESS
 JV7101'POST, 34.3 M (112.5 FT) EAST OF THE CENTER LINE OF CLARKSBURG ROAD
 JV7101'(S.R. 121), AND 48.5 M (159.1 FT) SOUTH OF A WARNING SIGN FOR BURIED
 JV7101'FIBER OPTIC CABLES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1316 ***********************************************************************
 HV1316  DESIGNATION -  2031 WSSC
 HV1316  PID         -  HV1316
 HV1316  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1316  COUNTRY     -  US
 HV1316  USGS QUAD   -  ANACOSTIA (2016)
 HV1316
 HV1316                         *CURRENT SURVEY CONTROL
 HV1316  ______________________________________________________________________
 HV1316* NAD 83(1986) POSITION- 38 52 16.     (N) 076 55 23.     (W)   SCALED
 HV1316* NAVD 88 ORTHO HEIGHT -    91.64  (+/-2cm)      300.7   (feet) VERTCON3
 HV1316  ______________________________________________________________________
 HV1316  GEOID HEIGHT    -        -32.325 (meters)                     GEOID18
 HV1316  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1316
 HV1316.The horizontal coordinates were scaled from a map and have
 HV1316.an estimated accuracy of +/- 6 seconds.
 HV1316
 HV1316.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1316.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1316
 HV1316.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1316.GEOID18 height accuracy estimate available here.
 HV1316
 HV1316.The vertical order pertains to the NGVD 29 superseded value.
 HV1316
 HV1316.Click photographs - Photos may exist for this station.
 HV1316
 HV1316;                    North         East    Units  Estimated Accuracy
 HV1316;SPC MD       -   133,700.      406,680.      MT  (+/- 180 meters Scaled)
 HV1316
 HV1316_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ331042(NAD 83)
 HV1316
 HV1316                          SUPERSEDED SURVEY CONTROL
 HV1316
 HV1316  NGVD 29 (11/26/84)   91.883  (m)          301.45   (f) ADJUSTED    2 0
 HV1316
 HV1316.Superseded values are not recommended for survey control.
 HV1316
 HV1316.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1316.See file dsdata.pdf to determine how the superseded data were derived.
 HV1316
 HV1316_MARKER: DD = SURVEY DISK
 HV1316_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1316_STAMPING: 2031
 HV1316_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1316
 HV1316  HISTORY     - Date     Condition        Report By
 HV1316  HISTORY     - 1944     MONUMENTED       WSSC
 HV1316
 HV1316                          STATION DESCRIPTION
 HV1316
 HV1316'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1316'AT HILLSIDE.  AT THE NORTHEAST CORNER OF THE INTERSECTION OF MARLBORO
 HV1316'PIKE AND CRYSTAL SPRING AVENUE, 30 FT (9.1 M) EAST OF THE AVENUE,
 HV1316'NORTH OF THE ROAD AND IN THE REAR OF A FORMER GARAGE (NOW A STORAGE
 HV1316'ROOM FOR THE GUNTHERS BEER CO.).
 HV1316'
 HV1316'NOTE-CRYSTAL SPRING AVENUE IS ALSO 57TH AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7102 ***********************************************************************
 JV7102  DESIGNATION -  20310
 JV7102  PID         -  JV7102
 JV7102  STATE/COUNTY-  MD/MONTGOMERY
 JV7102  COUNTRY     -  US
 JV7102  USGS QUAD   -  GERMANTOWN (2016)
 JV7102
 JV7102                         *CURRENT SURVEY CONTROL
 JV7102  ______________________________________________________________________
 JV7102* NAD 83(2011) POSITION- 39 08 24.77934(N) 077 16 44.46516(W)   ADJUSTED
 JV7102* NAD 83(2011) ELLIP HT-    76.763 (meters)        (06/27/12)   ADJUSTED
 JV7102* NAD 83(2011) EPOCH   -  2010.00
 JV7102* NAVD 88 ORTHO HEIGHT -   108.6   (meters)      356.    (feet) GPS OBS
 JV7102  ______________________________________________________________________
 JV7102  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7102  GEOID HEIGHT    -        -32.190 (meters)                     GEOID93
 JV7102  GEOID HEIGHT    -        -31.820 (meters)                     GEOID18
 JV7102  NAD 83(2011) X  -  1,090,794.408 (meters)                     COMP
 JV7102  NAD 83(2011) Y  - -4,831,985.218 (meters)                     COMP
 JV7102  NAD 83(2011) Z  -  4,004,450.834 (meters)                     COMP
 JV7102  LAPLACE CORR    -          2.78  (seconds)                    DEFLEC18
 JV7102
 JV7102  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7102  Standards:
 JV7102         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7102            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7102  -------------------------------------------------------------------
 JV7102  NETWORK    1.10   2.16           0.49   0.40   1.10      0.15461784
 JV7102  -------------------------------------------------------------------
 JV7102  Click here for local accuracies and other accuracy information.
 JV7102
 JV7102.The horizontal coordinates were established by GPS observations
 JV7102.and adjusted by the National Geodetic Survey in June 2012.
 JV7102
 JV7102.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7102.been affixed to the stable North American tectonic plate. See 
 JV7102.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7102
 JV7102.The horizontal coordinates are valid at the epoch date displayed above
 JV7102.which is a decimal equivalence of Year/Month/Day.
 JV7102
 JV7102.The orthometric height was determined by GPS observations and a
 JV7102.high-resolution geoid model.
 JV7102
 JV7102.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7102.GEOID18 height accuracy estimate available here.
 JV7102
 JV7102.Click photographs - Photos may exist for this station.
 JV7102
 JV7102.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7102
 JV7102.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7102
 JV7102.The ellipsoidal height was determined by GPS observations
 JV7102.and is referenced to NAD 83.
 JV7102
 JV7102. The following values were computed from the NAD 83(2011) position.
 JV7102
 JV7102;                    North         East     Units Scale Factor Converg.
 JV7102;SPC MD       -   163,608.772   375,878.434   MT  0.99996047   -0 10 30.4
 JV7102;SPC MD       -   536,773.11  1,233,194.50   sFT  0.99996047   -0 10 30.4
 JV7102;UTM  18      - 4,334,810.130   303,035.252   MT  1.00007771   -1 26 20.5
 JV7102
 JV7102!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7102!SPC MD       -   0.99998796  x   0.99996047  =   0.99994843
 JV7102!UTM  18      -   0.99998796  x   1.00007771  =   1.00006567
 JV7102
 JV7102_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0303534810(NAD 83)
 JV7102
 JV7102                          SUPERSEDED SURVEY CONTROL
 JV7102
 JV7102  NAD 83(2007)-  39 08 24.77953(N)    077 16 44.46592(W) AD(2002.00) 0
 JV7102  ELLIP H (02/10/07)   76.793  (m)                       GP(2002.00)    
 JV7102  ELLIP H (08/30/02)   76.799  (m)                       GP(       ) 4 2
 JV7102  NAD 83(1991)-  39 08 24.77909(N)    077 16 44.46599(W) AD(       ) 1
 JV7102  ELLIP H (01/11/94)   76.725  (m)                       GP(       ) 4 1
 JV7102
 JV7102.Superseded values are not recommended for survey control.
 JV7102
 JV7102.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7102.See file dsdata.pdf to determine how the superseded data were derived.
 JV7102
 JV7102_MARKER: DD = SURVEY DISK
 JV7102_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7102_STAMPING: BM 4141 RESET 1993 T.S. 20310 MC
 JV7102_MARK LOGO: WSSC
 JV7102_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7102_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7102+STABILITY: SURFACE MOTION
 JV7102_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7102+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2018
 JV7102
 JV7102  HISTORY     - Date     Condition        Report By
 JV7102  HISTORY     - 1993     MONUMENTED       MSI
 JV7102  HISTORY     - 20030609 GOOD             POWELL
 JV7102  HISTORY     - 20050105 GOOD             URS
 JV7102  HISTORY     - 20180728 SEE DESCRIPTION  BASE9
 JV7102
 JV7102                          STATION DESCRIPTION
 JV7102
 JV7102'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7102'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7102'3.4 MI (5.5 KM) WEST OF GAITHERSBURG.  TO REACH THE STATION FROM THE
 JV7102'INTERSECTION OF QUINCE ORCHARD ROAD (S.R. 124) AND DARNESTOWN ROAD
 JV7102'(S.R. 28), PROCEED WEST ALONG DARNESTOWN ROAD FOR 0.5 MI (0.8 KM) TO
 JV7102'THE INTERSECTION WITH RIFFLE FORD ROAD.  TURN RIGHT AND PROCEED NORTH
 JV7102'AND WEST ALONG RIFFLE FORD ROAD FOR 1.9 MI (3.1 KM) TO THE ENTRANCE
 JV7102'ROADWAY TO HOUSE NO. 17201 ON THE RIGHT.  CONTINUE ON RIFFLE FORD
 JV7102'ROAD FOR 0.15 MI (0.24 KM) TO THE STATION ON THE RIGHT.
 JV7102'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7102'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7102'T.S. 20310 MC. THE DISK IS LOCATED 32.0 FT (9.8 M) NORTH OF THE
 JV7102'CENTERLINE OF RIFFLE FORD ROAD, 160.0 FT (48.8 M) NORTHEAST OF POWER
 JV7102'POLE NO. 720475-7298, AND 182.5 FT (55.6 M) EAST OF THE NORTH END OF
 JV7102'A CONCRETE CULVERT.
 JV7102
 JV7102                          STATION RECOVERY (2003)
 JV7102
 JV7102'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2003 (BAP)
 JV7102'RECOVERED IN GOOD CONDITION.
 JV7102
 JV7102                          STATION RECOVERY (2005)
 JV7102
 JV7102'RECOVERY NOTE BY URS COMPANY 2005 (JP)
 JV7102'RECOVERED IN GOOD CONDITION.
 JV7102
 JV7102                          STATION RECOVERY (2018)
 JV7102
 JV7102'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2018 (DRD)
 JV7102'MARK RECOVERED IS STAMPED RESET 1993.  AS THERE WERE NO GPS
 JV7102'OBSERVATIONS TAKEN AT THIS TIME.  IT IS UNCERTAIN IF THIS MARK IS THE
 JV7102'ORIGINAL MARK SET IN 1993.  SHOULD BE USED WITH CAUTION.  MARK IS 6.85
 JV7102'M (22.5 FT) EAST-SOUTHEAST OF THE CENTER OF A SEWER ACCESS COVER,
 JV7102'16.82 M (55.2 FT) WEST OF A FIRE HYDRANT AND 9.66 M (31.7 FT) NORTH OF
 JV7102'THE CENTERLINE OF RIFFLE FORD ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7103 ***********************************************************************
 JV7103  DESIGNATION -  20311
 JV7103  PID         -  JV7103
 JV7103  STATE/COUNTY-  MD/MONTGOMERY
 JV7103  COUNTRY     -  US
 JV7103  USGS QUAD   -  SANDY SPRING (2016)
 JV7103
 JV7103                         *CURRENT SURVEY CONTROL
 JV7103  ______________________________________________________________________
 JV7103* NAD 83(2011) POSITION- 39 09 26.23633(N) 077 05 20.61033(W)   ADJUSTED
 JV7103* NAD 83(2011) ELLIP HT-   107.345 (meters)        (06/27/12)   ADJUSTED
 JV7103* NAD 83(2011) EPOCH   -  2010.00
 JV7103* NAVD 88 ORTHO HEIGHT -   139.1   (meters)      456.    (feet) GPS OBS
 JV7103  ______________________________________________________________________
 JV7103  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7103  GEOID HEIGHT    -        -32.140 (meters)                     GEOID93
 JV7103  GEOID HEIGHT    -        -31.790 (meters)                     GEOID18
 JV7103  NAD 83(2011) X  -  1,106,546.399 (meters)                     COMP
 JV7103  NAD 83(2011) Y  - -4,827,199.043 (meters)                     COMP
 JV7103  NAD 83(2011) Z  -  4,005,939.936 (meters)                     COMP
 JV7103  LAPLACE CORR    -         -2.18  (seconds)                    DEFLEC18
 JV7103
 JV7103  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7103  Standards:
 JV7103         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7103            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7103  -------------------------------------------------------------------
 JV7103  NETWORK    1.33   2.57           0.57   0.52   1.31      0.04013536
 JV7103  -------------------------------------------------------------------
 JV7103  Click here for local accuracies and other accuracy information.
 JV7103
 JV7103.The horizontal coordinates were established by GPS observations
 JV7103.and adjusted by the National Geodetic Survey in June 2012.
 JV7103
 JV7103.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7103.been affixed to the stable North American tectonic plate. See 
 JV7103.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7103
 JV7103.The horizontal coordinates are valid at the epoch date displayed above
 JV7103.which is a decimal equivalence of Year/Month/Day.
 JV7103
 JV7103.The orthometric height was determined by GPS observations and a
 JV7103.high-resolution geoid model.
 JV7103
 JV7103.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7103.GEOID18 height accuracy estimate available here.
 JV7103
 JV7103.Click photographs - Photos may exist for this station.
 JV7103
 JV7103.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7103
 JV7103.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7103
 JV7103.The ellipsoidal height was determined by GPS observations
 JV7103.and is referenced to NAD 83.
 JV7103
 JV7103. The following values were computed from the NAD 83(2011) position.
 JV7103
 JV7103;                    North         East     Units Scale Factor Converg.
 JV7103;SPC MD       -   165,470.826   392,302.593   MT  0.99996188   -0 03 21.2
 JV7103;SPC MD       -   542,882.20  1,287,079.42   sFT  0.99996188   -0 03 21.2
 JV7103;UTM  18      - 4,336,309.614   319,497.763   MT  1.00000118   -1 19 10.2
 JV7103
 JV7103!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7103!SPC MD       -   0.99998316  x   0.99996188  =   0.99994504
 JV7103!UTM  18      -   0.99998316  x   1.00000118  =   0.99998434
 JV7103
 JV7103_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1949736309(NAD 83)
 JV7103
 JV7103                          SUPERSEDED SURVEY CONTROL
 JV7103
 JV7103  NAD 83(2007)-  39 09 26.23641(N)    077 05 20.61116(W) AD(2002.00) 0
 JV7103  ELLIP H (02/10/07)  107.379  (m)                       GP(2002.00)    
 JV7103  ELLIP H (08/30/02)  107.386  (m)                       GP(       ) 4 2
 JV7103  NAD 83(1991)-  39 09 26.23581(N)    077 05 20.61092(W) AD(       ) 1
 JV7103  ELLIP H (01/11/94)  107.316  (m)                       GP(       ) 4 1
 JV7103
 JV7103.Superseded values are not recommended for survey control.
 JV7103
 JV7103.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7103.See file dsdata.pdf to determine how the superseded data were derived.
 JV7103
 JV7103_MARKER: DD = SURVEY DISK
 JV7103_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7103_STAMPING: T.S. 20311 MC
 JV7103_MARK LOGO: WSSC
 JV7103_PROJECTION: RECESSED 13 CENTIMETERS
 JV7103_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7103_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7103+STABILITY: SURFACE MOTION
 JV7103_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7103+SATELLITE: SATELLITE OBSERVATIONS - October 05, 2014
 JV7103
 JV7103  HISTORY     - Date     Condition        Report By
 JV7103  HISTORY     - 1993     MONUMENTED       MSI
 JV7103  HISTORY     - 20141005 GOOD             BASE9
 JV7103
 JV7103                          STATION DESCRIPTION
 JV7103
 JV7103'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7103'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7103'4.5 MI (7.2 KM) SOUTHEAST OF LAYTONSVILLE.  TO REACH THE STATION FROM
 JV7103'THE INTERSECTION OF GEORGIA AVENUE (S.R. 97) AND OLNEY-LAYTONSVILLE
 JV7103'ROAD (S.R. 108), PROCEED NORTHWEST ON OLNEY-LAYTONSVILLE ROAD FOR
 JV7103'APPROXIMATELY 0.9 MI (1.4 KM) TO THE INTERSECTION WITH BOWIE MILL
 JV7103'ROAD.  TURN LEFT AND TRAVEL SOUTHWEST ON BOWIE MILL ROAD FOR 0.6 MI
 JV7103'(1.0 KM) TO THE INTERSECTION WITH THORNHURST DRIVE, AND THE STATION
 JV7103'ON THE RIGHT.
 JV7103'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7103'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7103'T.S. 20311 MC. THE DISK IS LOCATED 29.3 FT (8.9 M) NORTH OF THE
 JV7103'CENTER LINE OF BOWIE MILL ROAD, 33.2 FT (10.1 M) EAST OF THE
 JV7103'NORTHEAST CORNER OF A STORM DRAIN, AND 31.0 FT (9.4 M) SOUTH OF A
 JV7103'MANHOLE.
 JV7103
 JV7103                          STATION RECOVERY (2014)
 JV7103
 JV7103'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 JV7103'THE MARK IS MARK IS 3.96 M (1.2 FT) WEST-SOUTHWEST OF THE WEST LEG OF
 JV7103'A STOP AND ROAD NAME SIGN, 4.55 M (1.4 FT) SOUTH OF THE SOUTHEAST
 JV7103'CORNER OF A BRICK SIGN READING 'BRIARS ACERS'.  THE MAN HOLE
 JV7103'REFERENCED IN THE 1993 DESCRIPTION IS FOR A STORM DRAIN ON THE WEST
 JV7103'SIDE OF THORNHURST DRIVE.  GPS OBSERVATIONS MAY BE EFFECTED BY TREES
 JV7103'TO THE NORTHWEST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7104 ***********************************************************************
 JV7104  DESIGNATION -  20312
 JV7104  PID         -  JV7104
 JV7104  STATE/COUNTY-  MD/MONTGOMERY
 JV7104  COUNTRY     -  US
 JV7104  USGS QUAD   -  GAITHERSBURG (2016)
 JV7104
 JV7104                         *CURRENT SURVEY CONTROL
 JV7104  ______________________________________________________________________
 JV7104* NAD 83(2011) POSITION- 39 07 48.69468(N) 077 13 47.34362(W)   ADJUSTED
 JV7104* NAD 83(2011) ELLIP HT-    99.604 (meters)        (06/27/12)   ADJUSTED
 JV7104* NAD 83(2011) EPOCH   -  2010.00
 JV7104* NAVD 88 ORTHO HEIGHT -   131.4   (meters)      431.    (feet) GPS OBS
 JV7104  ______________________________________________________________________
 JV7104  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7104  GEOID HEIGHT    -        -32.120 (meters)                     GEOID93
 JV7104  GEOID HEIGHT    -        -31.750 (meters)                     GEOID18
 JV7104  NAD 83(2011) X  -  1,095,102.441 (meters)                     COMP
 JV7104  NAD 83(2011) Y  - -4,831,749.017 (meters)                     COMP
 JV7104  NAD 83(2011) Z  -  4,003,602.091 (meters)                     COMP
 JV7104  LAPLACE CORR    -          1.61  (seconds)                    DEFLEC18
 JV7104
 JV7104  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7104  Standards:
 JV7104         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7104            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7104  -------------------------------------------------------------------
 JV7104  NETWORK    1.12   2.35           0.48   0.43   1.20      0.04038842
 JV7104  -------------------------------------------------------------------
 JV7104  Click here for local accuracies and other accuracy information.
 JV7104
 JV7104.The horizontal coordinates were established by GPS observations
 JV7104.and adjusted by the National Geodetic Survey in June 2012.
 JV7104
 JV7104.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7104.been affixed to the stable North American tectonic plate. See 
 JV7104.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7104
 JV7104.The horizontal coordinates are valid at the epoch date displayed above
 JV7104.which is a decimal equivalence of Year/Month/Day.
 JV7104
 JV7104.The orthometric height was determined by GPS observations and a
 JV7104.high-resolution geoid model.
 JV7104
 JV7104.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7104.GEOID18 height accuracy estimate available here.
 JV7104
 JV7104.Click photographs - Photos may exist for this station.
 JV7104
 JV7104.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7104
 JV7104.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7104
 JV7104.The ellipsoidal height was determined by GPS observations
 JV7104.and is referenced to NAD 83.
 JV7104
 JV7104. The following values were computed from the NAD 83(2011) position.
 JV7104
 JV7104;                    North         East     Units Scale Factor Converg.
 JV7104;SPC MD       -   162,484.174   380,129.079   MT  0.99995968   -0 08 39.3
 JV7104;SPC MD       -   533,083.49  1,247,140.15   sFT  0.99995968   -0 08 39.3
 JV7104;UTM  18      - 4,333,591.935   307,260.517   MT  1.00005743   -1 24 27.5
 JV7104
 JV7104!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7104!SPC MD       -   0.99998437  x   0.99995968  =   0.99994405
 JV7104!UTM  18      -   0.99998437  x   1.00005743  =   1.00004180
 JV7104
 JV7104_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0726033591(NAD 83)
 JV7104
 JV7104                          SUPERSEDED SURVEY CONTROL
 JV7104
 JV7104  NAD 83(2007)-  39 07 48.69487(N)    077 13 47.34438(W) AD(2002.00) 0
 JV7104  ELLIP H (02/10/07)   99.631  (m)                       GP(2002.00)    
 JV7104  ELLIP H (08/30/02)   99.648  (m)                       GP(       ) 4 2
 JV7104  NAD 83(1991)-  39 07 48.69432(N)    077 13 47.34466(W) AD(       ) 1
 JV7104  ELLIP H (01/11/94)   99.565  (m)                       GP(       ) 4 1
 JV7104
 JV7104.Superseded values are not recommended for survey control.
 JV7104
 JV7104.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7104.See file dsdata.pdf to determine how the superseded data were derived.
 JV7104
 JV7104_MARKER: DD = SURVEY DISK
 JV7104_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7104_STAMPING: T.S. 20312 MC
 JV7104_MARK LOGO: WSSC
 JV7104_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7104_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7104+STABILITY: SURFACE MOTION
 JV7104_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7104+SATELLITE: SATELLITE OBSERVATIONS - April 07, 2005
 JV7104
 JV7104  HISTORY     - Date     Condition        Report By
 JV7104  HISTORY     - 1993     MONUMENTED       MSI
 JV7104  HISTORY     - 20030609 GOOD             POWELL
 JV7104  HISTORY     - 20050407 GOOD             USPSQD
 JV7104  HISTORY     - 20140610 MARK NOT FOUND   RKK
 JV7104
 JV7104                          STATION DESCRIPTION
 JV7104
 JV7104'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7104'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7104'5.7 MI (9.2 KM) NORTHWEST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7104'STATION FROM THE INTERSECTION OF DIAMOND AVENUE WEST (S.R. 117) AND
 JV7104'QUINCE ORCHARD ROAD (S.R. 124), PROCEED SOUTH AND WEST ON QUINCE
 JV7104'ORCHARD ROAD FOR 0.9 MI (1.4 KM) TO THE INTERSECTION WITH TWIN LAKES
 JV7104'DRIVE. TURN RIGHT AND TRAVEL NORTH AND WEST ON TWIN LAKES DRIVE FOR
 JV7104'0.1 MI (0.2 KM) TO THE INTERSECTION WITH WIND RIVER LANE, AND THE
 JV7104'STATION IN A GRASS MEDIAN.
 JV7104'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7104'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7104'T.S. 20312 MC. THE DISK IS LOCATED 96.2 FT (29.3 M) NORTHWEST OF A
 JV7104'ROAD SIGN READING QUINCE ORCHARD CRESCENT, 34.5 FT (10.5 M)
 JV7104'SOUTHWEST OF THE CENTER OF A MANHOLE, AND 41.7 FT (12.7 M) NORTH OF
 JV7104'THE CENTER LINE OF TWIN LAKES DRIVE.
 JV7104
 JV7104                          STATION RECOVERY (2003)
 JV7104
 JV7104'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2003 (BAP)
 JV7104'RECOVERED IN GOOD CONDITION.
 JV7104
 JV7104                          STATION RECOVERY (2005)
 JV7104
 JV7104'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7104'RECOVERED IN GOOD CONDITION.
 JV7104
 JV7104                          STATION RECOVERY (2014)
 JV7104
 JV7104'RECOVERY NOTE BY RK&K 2014 (MC)
 JV7104'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7105 ***********************************************************************
 JV7105  DESIGNATION -  20313
 JV7105  PID         -  JV7105
 JV7105  STATE/COUNTY-  MD/MONTGOMERY
 JV7105  COUNTRY     -  US
 JV7105  USGS QUAD   -  ROCKVILLE (2016)
 JV7105
 JV7105                         *CURRENT SURVEY CONTROL
 JV7105  ______________________________________________________________________
 JV7105* NAD 83(2011) POSITION- 39 00 18.70445(N) 077 13 37.09627(W)   ADJUSTED
 JV7105* NAD 83(2011) ELLIP HT-    83.741 (meters)        (06/27/12)   ADJUSTED
 JV7105* NAD 83(2011) EPOCH   -  2010.00
 JV7105* NAVD 88 ORTHO HEIGHT -   115.5   (meters)      379.    (feet) GPS OBS
 JV7105  ______________________________________________________________________
 JV7105  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7105  GEOID HEIGHT    -        -32.110 (meters)                     GEOID93
 JV7105  GEOID HEIGHT    -        -31.718 (meters)                     GEOID18
 JV7105  NAD 83(2011) X  -  1,097,273.367 (meters)                     COMP
 JV7105  NAD 83(2011) Y  - -4,840,211.977 (meters)                     COMP
 JV7105  NAD 83(2011) Z  -  3,992,817.971 (meters)                     COMP
 JV7105  LAPLACE CORR    -         -0.48  (seconds)                    DEFLEC18
 JV7105
 JV7105  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7105  Standards:
 JV7105         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7105            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7105  -------------------------------------------------------------------
 JV7105  NETWORK    1.41   2.57           0.67   0.43   1.31     -0.00818514
 JV7105  -------------------------------------------------------------------
 JV7105  Click here for local accuracies and other accuracy information.
 JV7105
 JV7105.The horizontal coordinates were established by GPS observations
 JV7105.and adjusted by the National Geodetic Survey in June 2012.
 JV7105
 JV7105.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7105.been affixed to the stable North American tectonic plate. See 
 JV7105.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7105
 JV7105.The horizontal coordinates are valid at the epoch date displayed above
 JV7105.which is a decimal equivalence of Year/Month/Day.
 JV7105
 JV7105.The orthometric height was determined by GPS observations and a
 JV7105.high-resolution geoid model.
 JV7105
 JV7105.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7105.GEOID18 height accuracy estimate available here.
 JV7105
 JV7105.Click photographs - Photos may exist for this station.
 JV7105
 JV7105.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7105
 JV7105.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7105
 JV7105.The ellipsoidal height was determined by GPS observations
 JV7105.and is referenced to NAD 83.
 JV7105
 JV7105. The following values were computed from the NAD 83(2011) position.
 JV7105
 JV7105;                    North         East     Units Scale Factor Converg.
 JV7105;SPC MD       -   148,607.421   380,340.697   MT  0.99995239   -0 08 32.8
 JV7105;SPC MD       -   487,556.18  1,247,834.44   sFT  0.99995239   -0 08 32.8
 JV7105;SPC VA N     - 2,149,342.530 3,610,263.136   MT  0.99997123   +0 47 40.3
 JV7105;SPC VA N     - 7,051,634.62 11,844,671.64   sFT  0.99997123   +0 47 40.3
 JV7105;UTM  18      - 4,319,712.471   307,166.568   MT  1.00005789   -1 24 07.4
 JV7105
 JV7105!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7105!SPC MD       -   0.99998686  x   0.99995239  =   0.99993925
 JV7105!SPC VA N     -   0.99998686  x   0.99997123  =   0.99995809
 JV7105!UTM  18      -   0.99998686  x   1.00005789  =   1.00004475
 JV7105
 JV7105_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0716619712(NAD 83)
 JV7105
 JV7105                          SUPERSEDED SURVEY CONTROL
 JV7105
 JV7105  NAD 83(2007)-  39 00 18.70471(N)    077 13 37.09695(W) AD(2002.00) 0
 JV7105  ELLIP H (02/10/07)   83.767  (m)                       GP(2002.00)    
 JV7105  ELLIP H (08/30/02)   83.777  (m)                       GP(       ) 4 2
 JV7105  NAD 83(1993)-  39 00 18.70435(N)    077 13 37.09747(W) AD(       ) 1
 JV7105  ELLIP H (11/14/94)   83.717  (m)                       GP(       ) 4 2
 JV7105  NAD 83(1991)-  39 00 18.70395(N)    077 13 37.09847(W) AD(       ) 1
 JV7105  ELLIP H (01/11/94)   83.697  (m)                       GP(       ) 4 1
 JV7105
 JV7105.Superseded values are not recommended for survey control.
 JV7105
 JV7105.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7105.See file dsdata.pdf to determine how the superseded data were derived.
 JV7105
 JV7105_MARKER: DD = SURVEY DISK
 JV7105_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7105_STAMPING: T.S. 20313 MC
 JV7105_MARK LOGO: WSSC
 JV7105_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7105_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7105+STABILITY: SURFACE MOTION
 JV7105_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7105+SATELLITE: SATELLITE OBSERVATIONS - April 07, 2005
 JV7105
 JV7105  HISTORY     - Date     Condition        Report By
 JV7105  HISTORY     - 1993     MONUMENTED       MSI
 JV7105  HISTORY     - 20020218 GOOD             URS
 JV7105  HISTORY     - 20030909 GOOD             URS
 JV7105  HISTORY     - 20050407 GOOD             USPSQD
 JV7105  HISTORY     - 20090329 GOOD             NGS
 JV7105
 JV7105                          STATION DESCRIPTION
 JV7105
 JV7105'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7105'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7105'1.3 MI (2.1 KM) SOUTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV7105'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV7105'(S.R 189), PROCEED SOUTHWEST ON FALLS ROAD FOR 1.2 MI (1.9 KM) TO THE
 JV7105'INTERSECTION WITH ALLOWAY DRIVE.  TURN RIGHT AND TRAVEL NORTH ON
 JV7105'ALLOWAY DRIVE FOR 0.25 MI (0.40 KM) TO THE INTERSECTION WITH BELMART
 JV7105'ROAD. TURN LEFT AND TRAVEL SOUTHWEST ON BELMART ROAD FOR 0.3 MI
 JV7105'(0.5 KM) TO THE INTERSECTION WITH BELLAVISTA DRIVE.  TURN LEFT AND
 JV7105'TRAVEL SOUTHEAST ON BELLAVISTA DRIVE FOR 0.2 MI (0.3 KM) TO THE
 JV7105'TURNING CIRCLE, AND STATION IN THE GRASS ISLAND.
 JV7105'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7105'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7105'T.S. 20313 MC. THE DISK IS LOCATED 44.0 FT (13.4 M) NORTH OF A
 JV7105'TELEVISION PEDESTAL, 48.5 FT (14.8 M) SOUTHWEST OF MAILBOX NO. 11105,
 JV7105'AND 31.2 FT (9.5 M) NORTHEAST OF MAILBOX NO. 11104.
 JV7105
 JV7105                          STATION RECOVERY (2002)
 JV7105
 JV7105'RECOVERY NOTE BY URS COMPANY 2002 (JP)
 JV7105'RECOVERED IN GOOD CONDITION.
 JV7105
 JV7105                          STATION RECOVERY (2003)
 JV7105
 JV7105'RECOVERY NOTE BY URS COMPANY 2003 (ML)
 JV7105'RECOVERED IN GOOD CONDITION.
 JV7105
 JV7105                          STATION RECOVERY (2005)
 JV7105
 JV7105'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7105'RECOVERED IN GOOD CONDITION.
 JV7105
 JV7105                          STATION RECOVERY (2009)
 JV7105
 JV7105'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV7105'GPS OBSERVATIONS AT THIS STATION COULD BE OBSTRUCTED BY SEVERAL NEARBY
 JV7105'TREES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7106 ***********************************************************************
 JV7106  DESIGNATION -  20314
 JV7106  PID         -  JV7106
 JV7106  STATE/COUNTY-  MD/MONTGOMERY
 JV7106  COUNTRY     -  US
 JV7106  USGS QUAD   -  ROCKVILLE (2016)
 JV7106
 JV7106                         *CURRENT SURVEY CONTROL
 JV7106  ______________________________________________________________________
 JV7106* NAD 83(2011) POSITION- 39 03 25.15376(N) 077 13 39.95715(W)   ADJUSTED
 JV7106* NAD 83(2011) ELLIP HT-    73.637 (meters)        (06/27/12)   ADJUSTED
 JV7106* NAD 83(2011) EPOCH   -  2010.00
 JV7106* NAVD 88 ORTHO HEIGHT -   105.4   (meters)      346.    (feet) GPS OBS
 JV7106  ______________________________________________________________________
 JV7106  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7106  GEOID HEIGHT    -        -32.090 (meters)                     GEOID93
 JV7106  GEOID HEIGHT    -        -31.704 (meters)                     GEOID18
 JV7106  NAD 83(2011) X  -  1,096,404.012 (meters)                     COMP
 JV7106  NAD 83(2011) Y  - -4,836,688.270 (meters)                     COMP
 JV7106  NAD 83(2011) Z  -  3,997,278.044 (meters)                     COMP
 JV7106  LAPLACE CORR    -          0.88  (seconds)                    DEFLEC18
 JV7106
 JV7106  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7106  Standards:
 JV7106         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7106            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7106  -------------------------------------------------------------------
 JV7106  NETWORK    1.04   2.23           0.44   0.41   1.14      0.01274744
 JV7106  -------------------------------------------------------------------
 JV7106  Click here for local accuracies and other accuracy information.
 JV7106
 JV7106.The horizontal coordinates were established by GPS observations
 JV7106.and adjusted by the National Geodetic Survey in June 2012.
 JV7106
 JV7106.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7106.been affixed to the stable North American tectonic plate. See 
 JV7106.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7106
 JV7106.The horizontal coordinates are valid at the epoch date displayed above
 JV7106.which is a decimal equivalence of Year/Month/Day.
 JV7106
 JV7106.The orthometric height was determined by GPS observations and a
 JV7106.high-resolution geoid model.
 JV7106
 JV7106.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7106.GEOID18 height accuracy estimate available here.
 JV7106
 JV7106.Click photographs - Photos may exist for this station.
 JV7106
 JV7106.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7106
 JV7106.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7106
 JV7106.The ellipsoidal height was determined by GPS observations
 JV7106.and is referenced to NAD 83.
 JV7106
 JV7106. The following values were computed from the NAD 83(2011) position.
 JV7106
 JV7106;                    North         East     Units Scale Factor Converg.
 JV7106;SPC MD       -   154,356.994   380,286.209   MT  0.99995483   -0 08 34.6
 JV7106;SPC MD       -   506,419.57  1,247,655.67   sFT  0.99995483   -0 08 34.6
 JV7106;SPC VA N     - 2,155,090.563 3,610,114.632   MT  0.99997775   +0 47 38.5
 JV7106;SPC VA N     - 7,070,492.96 11,844,184.42   sFT  0.99997775   +0 47 38.5
 JV7106;UTM  18      - 4,325,462.450   307,238.570   MT  1.00005754   -1 24 14.9
 JV7106
 JV7106!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7106!SPC MD       -   0.99998845  x   0.99995483  =   0.99994328
 JV7106!SPC VA N     -   0.99998845  x   0.99997775  =   0.99996620
 JV7106!UTM  18      -   0.99998845  x   1.00005754  =   1.00004599
 JV7106
 JV7106_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0723825462(NAD 83)
 JV7106
 JV7106                          SUPERSEDED SURVEY CONTROL
 JV7106
 JV7106  NAD 83(2007)-  39 03 25.15400(N)    077 13 39.95786(W) AD(2002.00) 0
 JV7106  ELLIP H (02/10/07)   73.664  (m)                       GP(2002.00)    
 JV7106  ELLIP H (08/30/02)   73.688  (m)                       GP(       ) 4 2
 JV7106  ELLIP H (04/01/98)   73.598  (m)                       GP(       ) 4 1
 JV7106  NAD 83(1993)-  39 03 25.15363(N)    077 13 39.95826(W) AD(       ) 1
 JV7106  ELLIP H (11/14/94)   73.606  (m)                       GP(       ) 4 2
 JV7106  NAD 83(1991)-  39 03 25.15342(N)    077 13 39.95904(W) AD(       ) 1
 JV7106  ELLIP H (01/11/94)   73.595  (m)                       GP(       ) 4 1
 JV7106
 JV7106.Superseded values are not recommended for survey control.
 JV7106
 JV7106.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7106.See file dsdata.pdf to determine how the superseded data were derived.
 JV7106
 JV7106_MARKER: DD = SURVEY DISK
 JV7106_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7106_STAMPING: T.S. 20314 MC
 JV7106_MARK LOGO: WSSC
 JV7106_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7106_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7106+STABILITY: SURFACE MOTION
 JV7106_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7106+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2003
 JV7106
 JV7106  HISTORY     - Date     Condition        Report By
 JV7106  HISTORY     - 1993     MONUMENTED       MSI
 JV7106  HISTORY     - 20001106 GOOD             USPSQD
 JV7106  HISTORY     - 20030909 GOOD             URS
 JV7106
 JV7106                          STATION DESCRIPTION
 JV7106
 JV7106'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7106'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7106'2.4 MI (3.9 KM) SOUTHWEST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7106'STATION FROM THE INTERSECTION OF FALLS ROAD (S.R. 189) AND RIVER ROAD
 JV7106'(S.R. 190), PROCEED NORTHWEST ON RIVER ROAD FOR 1.7 MI (2.7 KM) TO
 JV7106'THE INTERSECTION WITH PINEY MEETINGHOUSE ROAD.  TURN RIGHT AND TRAVEL
 JV7106'NORTH ON PINEY MEETINGHOUSE ROAD FOR 1.3 MI (2.1 KM) TO THE
 JV7106'INTERSECTION WITH PINEY GLEN LANE.  TURN RIGHT AND TRAVEL EAST ON
 JV7106'PINEY GLEN LANE FOR 0.65 MI (1.05 KM) TO STATION ON THE LEFT.
 JV7106'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7106'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7106'T.S. 20314 MC. THE DISK IS LOCATED 13.5 FT (4.1 M) NORTHWEST OF THE
 JV7106'CENTERLINE OF PINEY GLEN LANE, 61.3 FT (18.7 M) NORTH OF POWER POLE
 JV7106'NO. 735445-2563, AND 52.9 FT (16.1 M) SOUTHWEST OF THE SOUTH END OF
 JV7106'THE CONCRETE CULVERT UNDER SOUTHERN DRIVEWAY TO HOUSE NO. 12209.
 JV7106
 JV7106                          STATION RECOVERY (2000)
 JV7106
 JV7106'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV7106'RECOVERED IN GOOD CONDITION.
 JV7106
 JV7106                          STATION RECOVERY (2003)
 JV7106
 JV7106'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 JV7106'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7107 ***********************************************************************
 JV7107  DESIGNATION -  20315
 JV7107  PID         -  JV7107
 JV7107  STATE/COUNTY-  MD/MONTGOMERY
 JV7107  COUNTRY     -  US
 JV7107  USGS QUAD   -  ROCKVILLE (2016)
 JV7107
 JV7107                         *CURRENT SURVEY CONTROL
 JV7107  ______________________________________________________________________
 JV7107* NAD 83(2011) POSITION- 39 05 02.77244(N) 077 13 45.31578(W)   ADJUSTED
 JV7107* NAD 83(2011) ELLIP HT-   105.031 (meters)        (06/27/12)   ADJUSTED
 JV7107* NAD 83(2011) EPOCH   -  2010.00
 JV7107* NAVD 88 ORTHO HEIGHT -   136.8   (meters)      449.    (feet) GPS OBS
 JV7107  ______________________________________________________________________
 JV7107  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7107  GEOID HEIGHT    -        -32.100 (meters)                     GEOID93
 JV7107  GEOID HEIGHT    -        -31.715 (meters)                     GEOID18
 JV7107  NAD 83(2011) X  -  1,095,864.326 (meters)                     COMP
 JV7107  NAD 83(2011) Y  - -4,834,890.069 (meters)                     COMP
 JV7107  NAD 83(2011) Z  -  3,999,635.023 (meters)                     COMP
 JV7107  LAPLACE CORR    -          1.42  (seconds)                    DEFLEC18
 JV7107
 JV7107  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7107  Standards:
 JV7107         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7107            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7107  -------------------------------------------------------------------
 JV7107  NETWORK    1.31   2.70           0.54   0.53   1.38     -0.01635860
 JV7107  -------------------------------------------------------------------
 JV7107  Click here for local accuracies and other accuracy information.
 JV7107
 JV7107.The horizontal coordinates were established by GPS observations
 JV7107.and adjusted by the National Geodetic Survey in June 2012.
 JV7107
 JV7107.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7107.been affixed to the stable North American tectonic plate. See 
 JV7107.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7107
 JV7107.The horizontal coordinates are valid at the epoch date displayed above
 JV7107.which is a decimal equivalence of Year/Month/Day.
 JV7107
 JV7107.The orthometric height was determined by GPS observations and a
 JV7107.high-resolution geoid model.
 JV7107
 JV7107.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7107.GEOID18 height accuracy estimate available here.
 JV7107
 JV7107.Click photographs - Photos may exist for this station.
 JV7107
 JV7107.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7107
 JV7107.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7107
 JV7107.The ellipsoidal height was determined by GPS observations
 JV7107.and is referenced to NAD 83.
 JV7107
 JV7107. The following values were computed from the NAD 83(2011) position.
 JV7107
 JV7107;                    North         East     Units Scale Factor Converg.
 JV7107;SPC MD       -   157,367.539   380,164.934   MT  0.99995644   -0 08 38.0
 JV7107;SPC MD       -   516,296.67  1,247,257.79   sFT  0.99995644   -0 08 38.0
 JV7107;SPC VA N     - 2,158,098.794 3,609,944.139   MT  0.99998149   +0 47 35.1
 JV7107;SPC VA N     - 7,080,362.46 11,843,625.06   sFT  0.99998149   +0 47 35.1
 JV7107;UTM  18      - 4,328,475.243   307,183.603   MT  1.00005780   -1 24 21.2
 JV7107
 JV7107!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7107!SPC MD       -   0.99998352  x   0.99995644  =   0.99993996
 JV7107!SPC VA N     -   0.99998352  x   0.99998149  =   0.99996501
 JV7107!UTM  18      -   0.99998352  x   1.00005780  =   1.00004132
 JV7107
 JV7107_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0718328475(NAD 83)
 JV7107
 JV7107                          SUPERSEDED SURVEY CONTROL
 JV7107
 JV7107  NAD 83(2007)-  39 05 02.77266(N)    077 13 45.31651(W) AD(2002.00) 0
 JV7107  ELLIP H (02/10/07)  105.057  (m)                       GP(2002.00)    
 JV7107  ELLIP H (08/30/02)  105.081  (m)                       GP(       ) 4 2
 JV7107  ELLIP H (04/01/98)  105.001  (m)                       GP(       ) 4 1
 JV7107  NAD 83(1993)-  39 05 02.77217(N)    077 13 45.31682(W) AD(       ) 1
 JV7107  ELLIP H (11/14/94)  104.994  (m)                       GP(       ) 4 2
 JV7107  NAD 83(1991)-  39 05 02.77207(N)    077 13 45.31718(W) AD(       ) 1
 JV7107  ELLIP H (01/11/94)  104.993  (m)                       GP(       ) 4 1
 JV7107
 JV7107.Superseded values are not recommended for survey control.
 JV7107
 JV7107.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7107.See file dsdata.pdf to determine how the superseded data were derived.
 JV7107
 JV7107_MARKER: DD = SURVEY DISK
 JV7107_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7107_STAMPING: T.S. 20315 MC
 JV7107_MARK LOGO: WSSC
 JV7107_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7107_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7107+STABILITY: SURFACE MOTION
 JV7107_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7107+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7107
 JV7107  HISTORY     - Date     Condition        Report By
 JV7107  HISTORY     - 1993     MONUMENTED       MSI
 JV7107  HISTORY     - 20100827 MARK NOT FOUND   NGS
 JV7107
 JV7107                          STATION DESCRIPTION
 JV7107
 JV7107'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7107'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7107'4.1 MI (6.6 KM) WEST OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7107'FROM THE INTERSECTION OF I-270 AND DARNESTOWN ROAD (S.R. 28), PROCEED
 JV7107'WEST ALONG DARNESTOWN ROAD FOR 2.3 MI (3.7 KM) TO THE INTERSECTION
 JV7107'WITH TRAVILAH ROAD.  TURN LEFT AND PROCEED SOUTHWEST ALONG TRAVILAH
 JV7107'ROAD FOR 1.5 MI (2.4 KM) TO THE INTERSECTION WITH WELLAND TERRACE.
 JV7107'CONTINUE ON TRAVILAH ROAD FOR 0.01 MI (0.02 KM) TO THE STATION ON THE
 JV7107'RIGHT.
 JV7107'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7107'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7107'T.S. 20315 MC. THE DISK IS LOCATED 60.0 FT (18.3 M) NORTH OF THE
 JV7107'CENTERLINE OF TRAVILAH ROAD, 61.0 FT (18.6 M) NORTHEAST OF THE
 JV7107'EASTERLY END OF A WOODEN FENCELINE, AND 60.0 FT (18.3 M) WEST OF THE
 JV7107'CENTER OF THE WEST FACE OF MOST-WESTERLY STONE PILLAR.
 JV7107
 JV7107                          STATION RECOVERY (2010)
 JV7107
 JV7107'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV7107'A BRIEF SEARCH FAILED TO UNCOVER ANY EVIDENCE OF THE THIS MARK.
 JV7107'MEASUREMENTS FROM REFERENCES SITED IN THE 1993 DESCRIPTION PLACE THE
 JV7107'MARK IN AN AREA THAT APPEARS TO HAVE BEEN GRADED FOR THE CONSTRUCTION
 JV7107'OF TENNIS COURTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7108 ***********************************************************************
 JV7108  DESIGNATION -  20316
 JV7108  PID         -  JV7108
 JV7108  STATE/COUNTY-  MD/MONTGOMERY
 JV7108  COUNTRY     -  US
 JV7108  USGS QUAD   -  GERMANTOWN (2016)
 JV7108
 JV7108                         *CURRENT SURVEY CONTROL
 JV7108  ______________________________________________________________________
 JV7108* NAD 83(2011) POSITION- 39 08 10.65785(N) 077 15 09.54169(W)   ADJUSTED
 JV7108* NAD 83(2011) ELLIP HT-    92.526 (meters)        (06/27/12)   ADJUSTED
 JV7108* NAD 83(2011) EPOCH   -  2010.00
 JV7108* NAVD 88 ORTHO HEIGHT -   124.3   (meters)      408.    (feet) GPS OBS
 JV7108  ______________________________________________________________________
 JV7108  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7108  GEOID HEIGHT    -        -32.150 (meters)                     GEOID93
 JV7108  GEOID HEIGHT    -        -31.779 (meters)                     GEOID18
 JV7108  NAD 83(2011) X  -  1,093,081.331 (meters)                     COMP
 JV7108  NAD 83(2011) Y  - -4,831,762.748 (meters)                     COMP
 JV7108  NAD 83(2011) Z  -  4,004,123.007 (meters)                     COMP
 JV7108  LAPLACE CORR    -          2.49  (seconds)                    DEFLEC18
 JV7108
 JV7108  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7108  Standards:
 JV7108         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7108            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7108  -------------------------------------------------------------------
 JV7108  NETWORK    1.05   2.04           0.48   0.36   1.04      0.05373756
 JV7108  -------------------------------------------------------------------
 JV7108  Click here for local accuracies and other accuracy information.
 JV7108
 JV7108.The horizontal coordinates were established by GPS observations
 JV7108.and adjusted by the National Geodetic Survey in June 2012.
 JV7108
 JV7108.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7108.been affixed to the stable North American tectonic plate. See 
 JV7108.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7108
 JV7108.The horizontal coordinates are valid at the epoch date displayed above
 JV7108.which is a decimal equivalence of Year/Month/Day.
 JV7108
 JV7108.The orthometric height was determined by GPS observations and a
 JV7108.high-resolution geoid model.
 JV7108
 JV7108.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7108.GEOID18 height accuracy estimate available here.
 JV7108
 JV7108.Click photographs - Photos may exist for this station.
 JV7108
 JV7108.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7108
 JV7108.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7108
 JV7108.The ellipsoidal height was determined by GPS observations
 JV7108.and is referenced to NAD 83.
 JV7108
 JV7108. The following values were computed from the NAD 83(2011) position.
 JV7108
 JV7108;                    North         East     Units Scale Factor Converg.
 JV7108;SPC MD       -   163,166.669   378,156.747   MT  0.99996015   -0 09 30.9
 JV7108;SPC MD       -   535,322.65  1,240,669.26   sFT  0.99996015   -0 09 30.9
 JV7108;UTM  18      - 4,334,317.830   305,303.514   MT  1.00006677   -1 25 20.1
 JV7108
 JV7108!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7108!SPC MD       -   0.99998548  x   0.99996015  =   0.99994563
 JV7108!UTM  18      -   0.99998548  x   1.00006677  =   1.00005225
 JV7108
 JV7108_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0530334317(NAD 83)
 JV7108
 JV7108                          SUPERSEDED SURVEY CONTROL
 JV7108
 JV7108  NAD 83(2007)-  39 08 10.65805(N)    077 15 09.54245(W) AD(2002.00) 0
 JV7108  ELLIP H (02/10/07)   92.556  (m)                       GP(2002.00)    
 JV7108  ELLIP H (08/30/02)   92.563  (m)                       GP(       ) 4 2
 JV7108  NAD 83(1991)-  39 08 10.65754(N)    077 15 09.54250(W) AD(       ) 1
 JV7108  ELLIP H (01/11/94)   92.489  (m)                       GP(       ) 4 1
 JV7108
 JV7108.Superseded values are not recommended for survey control.
 JV7108
 JV7108.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7108.See file dsdata.pdf to determine how the superseded data were derived.
 JV7108
 JV7108_MARKER: DD = SURVEY DISK
 JV7108_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7108_STAMPING: T.S. 20316 MC
 JV7108_MARK LOGO: WSSC
 JV7108_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7108_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7108+STABILITY: SURFACE MOTION
 JV7108_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7108+SATELLITE: SATELLITE OBSERVATIONS - January 15, 2010
 JV7108
 JV7108  HISTORY     - Date     Condition        Report By
 JV7108  HISTORY     - 1993     MONUMENTED       MSI
 JV7108  HISTORY     - 20100115 GOOD             NGS
 JV7108
 JV7108                          STATION DESCRIPTION
 JV7108
 JV7108'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7108'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7108'0.2 MI (0.3 KM) WEST OF GAITHERSBURG.  TO REACH THE STATION FROM THE
 JV7108'INTERSECTION OF DARNESTOWN ROAD (S.R. 28) AND QUINCE ORCHARD ROAD
 JV7108'(S.R. 124), PROCEED NORTH AND EAST ALONG QUINCE ORCHARD ROAD FOR 1.1
 JV7108'MI (1.8 KM) TO THE INTERSECTION WITH GREAT SENECA HIGHWAY. TURN LEFT
 JV7108'AND PROCEED NORTH AND WEST ON GREAT SENECA HIGHWAY FOR 0.95 MI
 JV7108'(1.53 KM) TO THE INTERSECTION WITH HORN POINT TERRACE.  TURN LEFT AND
 JV7108'PROCEED SOUTH AND WEST ON HORN POINT TERRACE FOR 0.05 MI, TO THE
 JV7108'STATION ON THE LEFT, IN THE GRASS MEDIAN (NORTH OF THE INTERSECTION
 JV7108'OF HORN POINT TERRACE AND MORNING LIGHT TERRACE).
 JV7108'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7108'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7108'T.S. 20316 MC. THE DISK IS LOCATED 82.3 FT (25.1 M) EAST OF A FIRE
 JV7108'HYDRANT, 49.8 FT (15.2 M) NORTH-NORTHWEST OF A MANHOLE, AND 84.8 FT
 JV7108'(25.8 M) WEST OF THE SOUTHWEST CORNER OF HOUSE NO. 12229.
 JV7108
 JV7108                          STATION RECOVERY (2010)
 JV7108
 JV7108'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV7108'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7109 ***********************************************************************
 JV7109  DESIGNATION -  20317
 JV7109  PID         -  JV7109
 JV7109  STATE/COUNTY-  MD/MONTGOMERY
 JV7109  COUNTRY     -  US
 JV7109  USGS QUAD   -  ROCKVILLE (2016)
 JV7109
 JV7109                         *CURRENT SURVEY CONTROL
 JV7109  ______________________________________________________________________
 JV7109* NAD 83(2011) POSITION- 39 02 48.88487(N) 077 12 06.39577(W)   ADJUSTED
 JV7109* NAD 83(2011) ELLIP HT-    82.669 (meters)        (06/27/12)   ADJUSTED
 JV7109* NAD 83(2011) EPOCH   -  2010.00
 JV7109* NAVD 88 ORTHO HEIGHT -   114.4   (meters)      375.    (feet) GPS OBS
 JV7109  ______________________________________________________________________
 JV7109  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7109  GEOID HEIGHT    -        -32.080 (meters)                     GEOID93
 JV7109  GEOID HEIGHT    -        -31.705 (meters)                     GEOID18
 JV7109  NAD 83(2011) X  -  1,098,755.463 (meters)                     COMP
 JV7109  NAD 83(2011) Y  - -4,836,884.442 (meters)                     COMP
 JV7109  NAD 83(2011) Z  -  3,996,415.158 (meters)                     COMP
 JV7109  LAPLACE CORR    -         -0.58  (seconds)                    DEFLEC18
 JV7109
 JV7109  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7109  Standards:
 JV7109         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7109            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7109  -------------------------------------------------------------------
 JV7109  NETWORK    1.57   3.14           0.71   0.56   1.60      0.03188744
 JV7109  -------------------------------------------------------------------
 JV7109  Click here for local accuracies and other accuracy information.
 JV7109
 JV7109.The horizontal coordinates were established by GPS observations
 JV7109.and adjusted by the National Geodetic Survey in June 2012.
 JV7109
 JV7109.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7109.been affixed to the stable North American tectonic plate. See 
 JV7109.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7109
 JV7109.The horizontal coordinates are valid at the epoch date displayed above
 JV7109.which is a decimal equivalence of Year/Month/Day.
 JV7109
 JV7109.The orthometric height was determined by GPS observations and a
 JV7109.high-resolution geoid model.
 JV7109
 JV7109.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7109.GEOID18 height accuracy estimate available here.
 JV7109
 JV7109.Click photographs - Photos may exist for this station.
 JV7109
 JV7109.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7109
 JV7109.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7109
 JV7109.The ellipsoidal height was determined by GPS observations
 JV7109.and is referenced to NAD 83.
 JV7109
 JV7109. The following values were computed from the NAD 83(2011) position.
 JV7109
 JV7109;                    North         East     Units Scale Factor Converg.
 JV7109;SPC MD       -   153,233.299   382,533.179   MT  0.99995429   -0 07 35.9
 JV7109;SPC MD       -   502,732.92  1,255,027.60   sFT  0.99995429   -0 07 35.9
 JV7109;SPC VA N     - 2,154,003.735 3,612,379.728   MT  0.99997642   +0 48 36.9
 JV7109;SPC VA N     - 7,066,927.25 11,851,615.82   sFT  0.99997642   +0 48 36.9
 JV7109;UTM  18      - 4,324,289.464   309,460.485   MT  1.00004706   -1 23 14.8
 JV7109
 JV7109!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7109!SPC MD       -   0.99998703  x   0.99995429  =   0.99994132
 JV7109!SPC VA N     -   0.99998703  x   0.99997642  =   0.99996345
 JV7109!UTM  18      -   0.99998703  x   1.00004706  =   1.00003409
 JV7109
 JV7109_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0946024289(NAD 83)
 JV7109
 JV7109                          SUPERSEDED SURVEY CONTROL
 JV7109
 JV7109  NAD 83(2007)-  39 02 48.88509(N)    077 12 06.39646(W) AD(2002.00) 0
 JV7109  ELLIP H (02/10/07)   82.696  (m)                       GP(2002.00)    
 JV7109  ELLIP H (08/30/02)   82.714  (m)                       GP(       ) 4 2
 JV7109  ELLIP H (04/01/98)   82.618  (m)                       GP(       ) 4 1
 JV7109  NAD 83(1993)-  39 02 48.88471(N)    077 12 06.39696(W) AD(       ) 1
 JV7109  ELLIP H (11/14/94)   82.634  (m)                       GP(       ) 4 2
 JV7109  NAD 83(1991)-  39 02 48.88461(N)    077 12 06.39751(W) AD(       ) 1
 JV7109  ELLIP H (01/11/94)   82.626  (m)                       GP(       ) 4 1
 JV7109
 JV7109.Superseded values are not recommended for survey control.
 JV7109
 JV7109.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7109.See file dsdata.pdf to determine how the superseded data were derived.
 JV7109
 JV7109_MARKER: DD = SURVEY DISK
 JV7109_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7109_STAMPING: T.S. 20317 MC
 JV7109_MARK LOGO: WSSC
 JV7109_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7109_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7109+STABILITY: SURFACE MOTION
 JV7109_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7109+SATELLITE: SATELLITE OBSERVATIONS - April 07, 2005
 JV7109
 JV7109  HISTORY     - Date     Condition        Report By
 JV7109  HISTORY     - 1993     MONUMENTED       MSI
 JV7109  HISTORY     - 20030909 GOOD             URS
 JV7109  HISTORY     - 20050407 GOOD             USPSQD
 JV7109
 JV7109                          STATION DESCRIPTION
 JV7109
 JV7109'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7109'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7109'3.9 MI (6.3 KM) SOUTHWEST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7109'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV7109'(S.R. 189), PROCEED NORTH ON FALLS ROAD FOR 2.4 MI (3.9 KM) TO THE
 JV7109'INTERSECTION WITH GLEN ROAD.  TURN LEFT ONTO GLEN ROAD AND TRAVEL
 JV7109'WEST FOR 0.55 MI (0.89 KM) TO THE STATION ON THE LEFT.
 JV7109'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7109'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7109'T.S. 20317 MC. THE DISK IS LOCATED 19.4 FT (5.9 M) SOUTH OF THE
 JV7109'CENTER LINE OF GLEN ROAD, 28.2 FT (8.6 M) NORTHWEST OF POWER POLE NO.
 JV7109'742442-6300, AND 61.8 FT (18.8 M) WEST OF A SQUARE GAS CAP (NEAR THE
 JV7109'INTERSECTION OF BECKET STREET AND THE NORTH EDGE OF GLEN ROAD).
 JV7109
 JV7109                          STATION RECOVERY (2003)
 JV7109
 JV7109'RECOVERY NOTE BY URS COMPANY 2003 (MM)
 JV7109'RECOVERED IN GOOD CONDITION.
 JV7109
 JV7109                          STATION RECOVERY (2005)
 JV7109
 JV7109'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7109'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7110 ***********************************************************************
 JV7110  DESIGNATION -  20318
 JV7110  PID         -  JV7110
 JV7110  STATE/COUNTY-  MD/MONTGOMERY
 JV7110  COUNTRY     -  US
 JV7110  USGS QUAD   -  ROCKVILLE (2016)
 JV7110
 JV7110                         *CURRENT SURVEY CONTROL
 JV7110  ______________________________________________________________________
 JV7110* NAD 83(2011) POSITION- 39 05 49.59911(N) 077 12 14.69777(W)   ADJUSTED
 JV7110* NAD 83(2011) ELLIP HT-   107.933 (meters)        (06/27/12)   ADJUSTED
 JV7110* NAD 83(2011) EPOCH   -  2010.00
 JV7110* NAVD 88 ORTHO HEIGHT -   139.7   (meters)      458.    (feet) GPS OBS
 JV7110  ______________________________________________________________________
 JV7110  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7110  GEOID HEIGHT    -        -32.090 (meters)                     GEOID93
 JV7110  GEOID HEIGHT    -        -31.709 (meters)                     GEOID18
 JV7110  NAD 83(2011) X  -  1,097,787.155 (meters)                     COMP
 JV7110  NAD 83(2011) Y  - -4,833,522.412 (meters)                     COMP
 JV7110  NAD 83(2011) Z  -  4,000,757.668 (meters)                     COMP
 JV7110  LAPLACE CORR    -          0.59  (seconds)                    DEFLEC18
 JV7110
 JV7110  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7110  Standards:
 JV7110         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7110            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7110  -------------------------------------------------------------------
 JV7110  NETWORK    1.16   2.59           0.48   0.47   1.32      0.00929503
 JV7110  -------------------------------------------------------------------
 JV7110  Click here for local accuracies and other accuracy information.
 JV7110
 JV7110.The horizontal coordinates were established by GPS observations
 JV7110.and adjusted by the National Geodetic Survey in June 2012.
 JV7110
 JV7110.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7110.been affixed to the stable North American tectonic plate. See 
 JV7110.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7110
 JV7110.The horizontal coordinates are valid at the epoch date displayed above
 JV7110.which is a decimal equivalence of Year/Month/Day.
 JV7110
 JV7110.The orthometric height was determined by GPS observations and a
 JV7110.high-resolution geoid model.
 JV7110
 JV7110.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7110.GEOID18 height accuracy estimate available here.
 JV7110
 JV7110.Click photographs - Photos may exist for this station.
 JV7110
 JV7110.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7110
 JV7110.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7110
 JV7110.The ellipsoidal height was determined by GPS observations
 JV7110.and is referenced to NAD 83.
 JV7110
 JV7110. The following values were computed from the NAD 83(2011) position.
 JV7110
 JV7110;                    North         East     Units Scale Factor Converg.
 JV7110;SPC MD       -   158,806.350   382,346.009   MT  0.99995729   -0 07 41.1
 JV7110;SPC MD       -   521,017.17  1,254,413.53   sFT  0.99995729   -0 07 41.1
 JV7110;SPC VA N     - 2,159,573.116 3,612,101.450   MT  0.99998336   +0 48 31.7
 JV7110;SPC VA N     - 7,085,199.46 11,850,702.84   sFT  0.99998336   +0 48 31.7
 JV7110;UTM  18      - 4,329,865.796   309,396.053   MT  1.00004735   -1 23 25.4
 JV7110
 JV7110!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7110!SPC MD       -   0.99998307  x   0.99995729  =   0.99994036
 JV7110!SPC VA N     -   0.99998307  x   0.99998336  =   0.99996643
 JV7110!UTM  18      -   0.99998307  x   1.00004735  =   1.00003042
 JV7110
 JV7110_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0939629865(NAD 83)
 JV7110
 JV7110                          SUPERSEDED SURVEY CONTROL
 JV7110
 JV7110  NAD 83(2007)-  39 05 49.59932(N)    077 12 14.69852(W) AD(2002.00) 0
 JV7110  ELLIP H (02/10/07)  107.959  (m)                       GP(2002.00)    
 JV7110  ELLIP H (08/30/02)  107.984  (m)                       GP(       ) 4 2
 JV7110  ELLIP H (04/01/98)  107.888  (m)                       GP(       ) 4 1
 JV7110  NAD 83(1993)-  39 05 49.59877(N)    077 12 14.69877(W) AD(       ) 1
 JV7110  NAD 83(1991)-  39 05 49.59872(N)    077 12 14.69890(W) AD(       ) 1
 JV7110  ELLIP H (01/11/94)  107.894  (m)                       GP(       ) 4 1
 JV7110
 JV7110.Superseded values are not recommended for survey control.
 JV7110
 JV7110.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7110.See file dsdata.pdf to determine how the superseded data were derived.
 JV7110
 JV7110_MARKER: DD = SURVEY DISK
 JV7110_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7110_STAMPING: T.S. 20318 MC
 JV7110_MARK LOGO: WSSC
 JV7110_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7110_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7110+STABILITY: SURFACE MOTION
 JV7110_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7110+SATELLITE: SATELLITE OBSERVATIONS - June 10, 2014
 JV7110
 JV7110  HISTORY     - Date     Condition        Report By
 JV7110  HISTORY     - 1993     MONUMENTED       MSI
 JV7110  HISTORY     - 20020118 GOOD             URS
 JV7110  HISTORY     - 20050407 GOOD             USPSQD
 JV7110  HISTORY     - 20100827 GOOD             NGS
 JV7110  HISTORY     - 20140610 GOOD             RKK
 JV7110
 JV7110                          STATION DESCRIPTION
 JV7110
 JV7110'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7110'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7110'3.3 MI (5.3 KM) WEST OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7110'FROM THE INTERSECTION OF DARNESTOWN ROAD (S.R. 28) AND QUINCE ORCHARD
 JV7110'ROAD (S.R. 124), PROCEED SOUTHEAST ON DARNESTOWN ROAD FOR 3.1 MI
 JV7110'(5.0 KM) TO THE INTERSECTION WITH GREAT SENECA HIGHWAY.  TURN LEFT
 JV7110'AND TRAVEL NORTH ON GREAT SENECA HIGHWAY FOR APPROXIMATELY 100 FT
 JV7110'(30.5 M) TO THE STATION ON THE LEFT, ON THE WEST SIDE OF THE SOUTH
 JV7110'BOUND LANE OF GREAT SENECA HIGHWAY.
 JV7110'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7110'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7110'T.S. 20318 MC. THE DISK IS LOCATED 90.4 FT (27.6 M) NORTH OF POWER
 JV7110'POLE NO. 742460-0318, 41.5 FT (12.6 M) WEST OF THE CENTER LINE OF
 JV7110'GREAT SENECA HIGHWAY SOUTH BOUND LANE, AND 53.0 FT (16.2 M) SOUTHWEST
 JV7110'OF THE CENTER OF A CATCH BASIN.
 JV7110
 JV7110                          STATION RECOVERY (2002)
 JV7110
 JV7110'RECOVERY NOTE BY URS COMPANY 2002 (EN)
 JV7110'RECOVERED IN GOOD CONDITION.
 JV7110
 JV7110                          STATION RECOVERY (2005)
 JV7110
 JV7110'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7110'RECOVERED IN GOOD CONDITION.
 JV7110
 JV7110                          STATION RECOVERY (2010)
 JV7110
 JV7110'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV7110'RECOVERED IN GOOD CONDITION.
 JV7110
 JV7110                          STATION RECOVERY (2014)
 JV7110
 JV7110'RECOVERY NOTE BY RK&K 2014 (MC)
 JV7110'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7111 ***********************************************************************
 JV7111  DESIGNATION -  20319
 JV7111  PID         -  JV7111
 JV7111  STATE/COUNTY-  MD/MONTGOMERY
 JV7111  COUNTRY     -  US
 JV7111  USGS QUAD   -  ROCKVILLE (2016)
 JV7111
 JV7111                         *CURRENT SURVEY CONTROL
 JV7111  ______________________________________________________________________
 JV7111* NAD 83(2011) POSITION- 39 00 39.17430(N) 077 10 31.02468(W)   ADJUSTED
 JV7111* NAD 83(2011) ELLIP HT-    48.076 (meters)        (06/27/12)   ADJUSTED
 JV7111* NAD 83(2011) EPOCH   -  2010.00
 JV7111* NAVD 88 ORTHO HEIGHT -    79.9   (meters)      262.    (feet) GPS OBS
 JV7111  ______________________________________________________________________
 JV7111  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7111  GEOID HEIGHT    -        -32.130 (meters)                     GEOID93
 JV7111  GEOID HEIGHT    -        -31.756 (meters)                     GEOID18
 JV7111  NAD 83(2011) X  -  1,101,544.932 (meters)                     COMP
 JV7111  NAD 83(2011) Y  - -4,838,805.719 (meters)                     COMP
 JV7111  NAD 83(2011) Z  -  3,993,286.039 (meters)                     COMP
 JV7111  LAPLACE CORR    -         -2.07  (seconds)                    DEFLEC18
 JV7111
 JV7111  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7111  Standards:
 JV7111         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7111            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7111  -------------------------------------------------------------------
 JV7111  NETWORK    1.39   2.88           0.62   0.50   1.47     -0.09537845
 JV7111  -------------------------------------------------------------------
 JV7111  Click here for local accuracies and other accuracy information.
 JV7111
 JV7111.The horizontal coordinates were established by GPS observations
 JV7111.and adjusted by the National Geodetic Survey in June 2012.
 JV7111
 JV7111.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7111.been affixed to the stable North American tectonic plate. See 
 JV7111.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7111
 JV7111.The horizontal coordinates are valid at the epoch date displayed above
 JV7111.which is a decimal equivalence of Year/Month/Day.
 JV7111
 JV7111.The orthometric height was determined by GPS observations and a
 JV7111.high-resolution geoid model.
 JV7111
 JV7111.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7111.GEOID18 height accuracy estimate available here.
 JV7111
 JV7111.Click photographs - Photos may exist for this station.
 JV7111
 JV7111.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7111
 JV7111.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7111
 JV7111.The ellipsoidal height was determined by GPS observations
 JV7111.and is referenced to NAD 83.
 JV7111
 JV7111. The following values were computed from the NAD 83(2011) position.
 JV7111
 JV7111;                    North         East     Units Scale Factor Converg.
 JV7111;SPC MD       -   149,228.769   384,818.777   MT  0.99995262   -0 06 36.1
 JV7111;SPC MD       -   489,594.72  1,262,526.27   sFT  0.99995262   -0 06 36.1
 JV7111;SPC VA N     - 2,150,037.029 3,614,730.544   MT  0.99997190   +0 49 36.4
 JV7111;SPC VA N     - 7,053,913.15 11,859,328.46   sFT  0.99997190   +0 49 36.4
 JV7111;UTM  18      - 4,320,235.277   311,657.651   MT  1.00003681   -1 22 10.8
 JV7111
 JV7111!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7111!SPC MD       -   0.99999246  x   0.99995262  =   0.99994508
 JV7111!SPC VA N     -   0.99999246  x   0.99997190  =   0.99996436
 JV7111!UTM  18      -   0.99999246  x   1.00003681  =   1.00002927
 JV7111
 JV7111_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1165720235(NAD 83)
 JV7111
 JV7111                          SUPERSEDED SURVEY CONTROL
 JV7111
 JV7111  NAD 83(2007)-  39 00 39.17450(N)    077 10 31.02530(W) AD(2002.00) 0
 JV7111  ELLIP H (02/10/07)   48.105  (m)                       GP(2002.00)    
 JV7111  ELLIP H (08/30/02)   48.108  (m)                       GP(       ) 4 2
 JV7111  NAD 83(1993)-  39 00 39.17425(N)    077 10 31.02604(W) AD(       ) 1
 JV7111  ELLIP H (11/14/94)   48.041  (m)                       GP(       ) 4 2
 JV7111  NAD 83(1991)-  39 00 39.17412(N)    077 10 31.02651(W) AD(       ) 1
 JV7111  ELLIP H (01/11/94)   48.036  (m)                       GP(       ) 4 1
 JV7111
 JV7111.Superseded values are not recommended for survey control.
 JV7111
 JV7111.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7111.See file dsdata.pdf to determine how the superseded data were derived.
 JV7111
 JV7111_MARKER: DD = SURVEY DISK
 JV7111_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7111_STAMPING: T.S. 20319 MC
 JV7111_MARK LOGO: WSSC
 JV7111_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7111_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7111+STABILITY: SURFACE MOTION
 JV7111_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7111+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7111
 JV7111  HISTORY     - Date     Condition        Report By
 JV7111  HISTORY     - 1993     MONUMENTED       MSI
 JV7111
 JV7111                          STATION DESCRIPTION
 JV7111
 JV7111'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7111'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7111'5.3 MI (8.5 KM) SOUTHWEST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7111'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND BRADLEY
 JV7111'BOULEVARD (S.R. 191), PROCEED NORTHEAST ON BRADLEY BLVD FOR 0.7 MI
 JV7111'(1.1 KM) TO THE INTERSECTION WITH KENTSDALE DRIVE.  TURN LEFT AND
 JV7111'TRAVEL NORTH ON KENTSDALE DRIVE FOR 0.1 MI (0.2 KM) TO THE
 JV7111'INTERSECTION WITH CHATEAU DRIVE.  TURN LEFT AND TRAVEL WEST ON
 JV7111'CHATEAU DRIVE FOR 0.1 MI (0.2 KM) TO THE STATION ON THE LEFT.
 JV7111'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7111'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7111'T.S. 20319 MC. THE DISK IS LOCATED 15.0 FT (4.6 M) SOUTHEAST OF THE
 JV7111'CENTER LINE OF CHATEAU DRIVE, 17.9 FT (5.5 M) SOUTHWEST OF THE WEST
 JV7111'CORNER OF SIDE WALK TO HOUSE NO. 8612, AND 28.2 FT (8.6 M) NORTHEAST
 JV7111'OF MAILBOX NO. 8612.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7112 ***********************************************************************
 JV7112  DESIGNATION -  20320
 JV7112  PID         -  JV7112
 JV7112  STATE/COUNTY-  MD/MONTGOMERY
 JV7112  COUNTRY     -  US
 JV7112  USGS QUAD   -  ROCKVILLE (2016)
 JV7112
 JV7112                         *CURRENT SURVEY CONTROL
 JV7112  ______________________________________________________________________
 JV7112* NAD 83(2011) POSITION- 39 03 08.75056(N) 077 10 29.26670(W)   ADJUSTED
 JV7112* NAD 83(2011) ELLIP HT-    94.517 (meters)        (06/27/12)   ADJUSTED
 JV7112* NAD 83(2011) EPOCH   -  2010.00
 JV7112* NAVD 88 ORTHO HEIGHT -   126.3   (meters)      414.    (feet) GPS OBS
 JV7112  ______________________________________________________________________
 JV7112  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7112  GEOID HEIGHT    -        -32.100 (meters)                     GEOID93
 JV7112  GEOID HEIGHT    -        -31.718 (meters)                     GEOID18
 JV7112  NAD 83(2011) X  -  1,100,949.376 (meters)                     COMP
 JV7112  NAD 83(2011) Y  - -4,835,999.158 (meters)                     COMP
 JV7112  NAD 83(2011) Z  -  3,996,898.387 (meters)                     COMP
 JV7112  LAPLACE CORR    -         -1.56  (seconds)                    DEFLEC18
 JV7112
 JV7112  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7112  Standards:
 JV7112         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7112            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7112  -------------------------------------------------------------------
 JV7112  NETWORK    1.09   2.25           0.49   0.39   1.15     -0.10482327
 JV7112  -------------------------------------------------------------------
 JV7112  Click here for local accuracies and other accuracy information.
 JV7112
 JV7112.The horizontal coordinates were established by GPS observations
 JV7112.and adjusted by the National Geodetic Survey in June 2012.
 JV7112
 JV7112.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7112.been affixed to the stable North American tectonic plate. See 
 JV7112.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7112
 JV7112.The horizontal coordinates are valid at the epoch date displayed above
 JV7112.which is a decimal equivalence of Year/Month/Day.
 JV7112
 JV7112.The orthometric height was determined by GPS observations and a
 JV7112.high-resolution geoid model.
 JV7112
 JV7112.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7112.GEOID18 height accuracy estimate available here.
 JV7112
 JV7112.Click photographs - Photos may exist for this station.
 JV7112
 JV7112.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7112
 JV7112.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7112
 JV7112.The ellipsoidal height was determined by GPS observations
 JV7112.and is referenced to NAD 83.
 JV7112
 JV7112. The following values were computed from the NAD 83(2011) position.
 JV7112
 JV7112;                    North         East     Units Scale Factor Converg.
 JV7112;SPC MD       -   153,841.068   384,869.902   MT  0.99995458   -0 06 34.9
 JV7112;SPC MD       -   504,726.90  1,262,694.00   sFT  0.99995458   -0 06 34.9
 JV7112;SPC VA N     - 2,154,649.644 3,614,706.253   MT  0.99997714   +0 49 37.5
 JV7112;SPC VA N     - 7,069,046.37 11,859,248.77   sFT  0.99997714   +0 49 37.5
 JV7112;UTM  18      - 4,324,845.718   311,810.220   MT  1.00003610   -1 22 14.1
 JV7112
 JV7112!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7112!SPC MD       -   0.99998517  x   0.99995458  =   0.99993975
 JV7112!SPC VA N     -   0.99998517  x   0.99997714  =   0.99996231
 JV7112!UTM  18      -   0.99998517  x   1.00003610  =   1.00002127
 JV7112
 JV7112_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1181024845(NAD 83)
 JV7112
 JV7112                          SUPERSEDED SURVEY CONTROL
 JV7112
 JV7112  NAD 83(2007)-  39 03 08.75076(N)    077 10 29.26738(W) AD(2002.00) 0
 JV7112  ELLIP H (02/10/07)   94.544  (m)                       GP(2002.00)    
 JV7112  ELLIP H (08/30/02)   94.557  (m)                       GP(       ) 4 2
 JV7112  NAD 83(1993)-  39 03 08.75039(N)    077 10 29.26796(W) AD(       ) 1
 JV7112  ELLIP H (11/14/94)   94.477  (m)                       GP(       ) 4 2
 JV7112  NAD 83(1991)-  39 03 08.75035(N)    077 10 29.26833(W) AD(       ) 1
 JV7112  ELLIP H (01/11/94)   94.474  (m)                       GP(       ) 4 1
 JV7112
 JV7112.Superseded values are not recommended for survey control.
 JV7112
 JV7112.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7112.See file dsdata.pdf to determine how the superseded data were derived.
 JV7112
 JV7112_MARKER: DD = SURVEY DISK
 JV7112_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7112_STAMPING: T.S. 20320 MC
 JV7112_MARK LOGO: WSSC
 JV7112_PROJECTION: FLUSH
 JV7112_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7112_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7112+STABILITY: SURFACE MOTION
 JV7112_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7112+SATELLITE: SATELLITE OBSERVATIONS - March 01, 2020
 JV7112
 JV7112  HISTORY     - Date     Condition        Report By
 JV7112  HISTORY     - 1993     MONUMENTED       MSI
 JV7112  HISTORY     - 19970426 GOOD             DMW
 JV7112  HISTORY     - 20001106 GOOD             USPSQD
 JV7112  HISTORY     - 20020118 GOOD             URS
 JV7112  HISTORY     - 20030908 GOOD             URS
 JV7112  HISTORY     - 20050407 GOOD             USPSQD
 JV7112  HISTORY     - 20200301 GOOD             NGS
 JV7112
 JV7112                          STATION DESCRIPTION
 JV7112
 JV7112'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7112'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7112'2.6 MI (4.2 KM) SOUTHWEST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7112'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV7112'(S.R. 189), PROCEED NORTH ON FALLS ROAD FOR 2.9 MI (4.7 KM) TO THE
 JV7112'INTERSECTION WITH VICTORY LANE.  TURN RIGHT ONTO VICTORY LANE AND
 JV7112'TRAVEL SOUTHEAST FOR 0.4 MI (0.6 KM) TO THE INTERSECTION WITH POSTOAK
 JV7112'ROAD.  TURN LEFT ONTO POSTOAK ROAD AND TRAVEL NORTHEAST FOR 0.25 MI
 JV7112'(0.40 KM) TO THE STATION ON THE LEFT.
 JV7112'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7112'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7112'T.S. 20320 MC. THE DISK IS LOCATED 39.3 FT (12.0 M) NORTH OF THE
 JV7112'CENTER LINE OF POSTOAK ROAD, 113.7 FT (34.7 M) EAST OF POWER POLE NO.
 JV7112'M12799, AND 45.7 FT (13.9 M) WEST OF A POWER POLE.
 JV7112
 JV7112                          STATION RECOVERY (1997)
 JV7112
 JV7112'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (JMS)
 JV7112'RECOVERED AS DESCRIBED.
 JV7112
 JV7112                          STATION RECOVERY (2000)
 JV7112
 JV7112'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV7112'RECOVERED IN GOOD CONDITION.
 JV7112
 JV7112                          STATION RECOVERY (2002)
 JV7112
 JV7112'RECOVERY NOTE BY URS COMPANY 2002 (EN)
 JV7112'RECOVERED IN GOOD CONDITION.
 JV7112
 JV7112                          STATION RECOVERY (2003)
 JV7112
 JV7112'RECOVERY NOTE BY URS COMPANY 2003 (MM)
 JV7112'RECOVERED IN GOOD CONDITION.
 JV7112
 JV7112                          STATION RECOVERY (2005)
 JV7112
 JV7112'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7112'RECOVERED IN GOOD CONDITION.
 JV7112
 JV7112                          STATION RECOVERY (2020)
 JV7112
 JV7112'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (KA)
 JV7112'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7113 ***********************************************************************
 JV7113  DESIGNATION -  20321
 JV7113  PID         -  JV7113
 JV7113  STATE/COUNTY-  MD/MONTGOMERY
 JV7113  COUNTRY     -  US
 JV7113  USGS QUAD   -  ROCKVILLE (2016)
 JV7113
 JV7113                         *CURRENT SURVEY CONTROL
 JV7113  ______________________________________________________________________
 JV7113* NAD 83(2011) POSITION- 39 05 15.29150(N) 077 10 36.87399(W)   ADJUSTED
 JV7113* NAD 83(2011) ELLIP HT-    72.608 (meters)        (06/27/12)   ADJUSTED
 JV7113* NAD 83(2011) EPOCH   -  2010.00
 JV7113* NAVD 88 ORTHO HEIGHT -   104.3   (meters)      342.    (feet) GPS OBS
 JV7113  ______________________________________________________________________
 JV7113  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7113  GEOID HEIGHT    -        -32.090 (meters)                     GEOID93
 JV7113  GEOID HEIGHT    -        -31.709 (meters)                     GEOID18
 JV7113  NAD 83(2011) X  -  1,100,221.375 (meters)                     COMP
 JV7113  NAD 83(2011) Y  - -4,833,625.000 (meters)                     COMP
 JV7113  NAD 83(2011) Z  -  3,999,914.249 (meters)                     COMP
 JV7113  LAPLACE CORR    -         -0.78  (seconds)                    DEFLEC18
 JV7113
 JV7113  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7113  Standards:
 JV7113         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7113            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7113  -------------------------------------------------------------------
 JV7113  NETWORK    1.05   2.31           0.45   0.41   1.18     -0.05986881
 JV7113  -------------------------------------------------------------------
 JV7113  Click here for local accuracies and other accuracy information.
 JV7113
 JV7113.The horizontal coordinates were established by GPS observations
 JV7113.and adjusted by the National Geodetic Survey in June 2012.
 JV7113
 JV7113.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7113.been affixed to the stable North American tectonic plate. See 
 JV7113.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7113
 JV7113.The horizontal coordinates are valid at the epoch date displayed above
 JV7113.which is a decimal equivalence of Year/Month/Day.
 JV7113
 JV7113.The orthometric height was determined by GPS observations and a
 JV7113.high-resolution geoid model.
 JV7113
 JV7113.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7113.GEOID18 height accuracy estimate available here.
 JV7113
 JV7113.Click photographs - Photos may exist for this station.
 JV7113
 JV7113.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7113
 JV7113.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7113
 JV7113.The ellipsoidal height was determined by GPS observations
 JV7113.and is referenced to NAD 83.
 JV7113
 JV7113. The following values were computed from the NAD 83(2011) position.
 JV7113
 JV7113;                    North         East     Units Scale Factor Converg.
 JV7113;SPC MD       -   157,743.510   384,694.555   MT  0.99995666   -0 06 39.7
 JV7113;SPC MD       -   517,530.17  1,262,118.72   sFT  0.99995666   -0 06 39.7
 JV7113;SPC VA N     - 2,158,548.791 3,614,467.121   MT  0.99998198   +0 49 32.8
 JV7113;SPC VA N     - 7,081,838.83 11,858,464.21   sFT  0.99998198   +0 49 32.8
 JV7113;UTM  18      - 4,328,751.389   311,720.816   MT  1.00003651   -1 22 22.7
 JV7113
 JV7113!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7113!SPC MD       -   0.99998861  x   0.99995666  =   0.99994527
 JV7113!SPC VA N     -   0.99998861  x   0.99998198  =   0.99997059
 JV7113!UTM  18      -   0.99998861  x   1.00003651  =   1.00002512
 JV7113
 JV7113_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1172028751(NAD 83)
 JV7113
 JV7113                          SUPERSEDED SURVEY CONTROL
 JV7113
 JV7113  NAD 83(2007)-  39 05 15.29170(N)    077 10 36.87474(W) AD(2002.00) 0
 JV7113  ELLIP H (02/10/07)   72.630  (m)                       GP(2002.00)    
 JV7113  ELLIP H (08/30/02)   72.663  (m)                       GP(       ) 4 2
 JV7113  NAD 83(1993)-  39 05 15.29119(N)    077 10 36.87502(W) AD(       ) 1
 JV7113  NAD 83(1991)-  39 05 15.29116(N)    077 10 36.87520(W) AD(       ) 1
 JV7113  ELLIP H (01/11/94)   72.563  (m)                       GP(       ) 4 1
 JV7113
 JV7113.Superseded values are not recommended for survey control.
 JV7113
 JV7113.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7113.See file dsdata.pdf to determine how the superseded data were derived.
 JV7113
 JV7113_MARKER: DD = SURVEY DISK
 JV7113_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7113_STAMPING: T.S. 20321 MC
 JV7113_MARK LOGO: WSSC
 JV7113_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7113_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7113+STABILITY: SURFACE MOTION
 JV7113_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7113+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7113
 JV7113  HISTORY     - Date     Condition        Report By
 JV7113  HISTORY     - 1993     MONUMENTED       MSI
 JV7113
 JV7113                          STATION DESCRIPTION
 JV7113
 JV7113'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7113'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7113'1.7 MI (2.7 KM) WEST OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7113'FROM THE INTERSECTION OF DARNESTOWN ROAD (S.R. 28) AND QUINCE ORCHARD
 JV7113'ROAD (S.R. 124), PROCEED EAST ON DARNESTOWN ROAD FOR 4.7 MI (7.6 KM)
 JV7113'TO THE INTERSECTION WITH HURLEY AVENUE.  TURN RIGHT ONTO HURLEY AVENUE
 JV7113'AND TRAVEL WEST FOR APPPROXIMATELY 200 FT (61.0 M) TO THE
 JV7113'INTERSECTION WITH WATTS BRANCH PARKWAY.  TURN LEFT ONTO WATTS BRANCH
 JV7113'PARKWAY AND TRAVEL SOUTH FOR 0.1 MI (0.2 KM) TO THE STATION ON THE
 JV7113'LEFT.
 JV7113'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7113'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7113'T.S. 20321 MC. THE DISK IS LOCATED 131 FT (39.9 M) NORTH OF THE
 JV7113'CENTER OF CATCH BASIN ON THE EAST SIDE OF WATTS BRANCH PARKWAY, 59.8
 JV7113'FT (18.2 M) NORTHEAST OF THE CENTER LINE OF WATTS BRANCH PARKWAY, AND
 JV7113'78.9 FT (24.0 M) SOUTH OF POWER POLE NO. 749456-6785.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7114 ***********************************************************************
 JV7114  DESIGNATION -  20322
 JV7114  PID         -  JV7114
 JV7114  STATE/COUNTY-  MD/MONTGOMERY
 JV7114  COUNTRY     -  US
 JV7114  USGS QUAD   -  ROCKVILLE (2016)
 JV7114
 JV7114                         *CURRENT SURVEY CONTROL
 JV7114  ______________________________________________________________________
 JV7114* NAD 83(2011) POSITION- 39 00 38.66215(N) 077 09 15.14805(W)   ADJUSTED
 JV7114* NAD 83(2011) ELLIP HT-    44.079 (meters)        (06/27/12)   ADJUSTED
 JV7114* NAD 83(2011) EPOCH   -  2010.00
 JV7114* NAVD 88 ORTHO HEIGHT -    75.9   (meters)      249.    (feet) GPS OBS
 JV7114  ______________________________________________________________________
 JV7114  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7114  GEOID HEIGHT    -        -32.150 (meters)                     GEOID93
 JV7114  GEOID HEIGHT    -        -31.776 (meters)                     GEOID18
 JV7114  NAD 83(2011) X  -  1,103,326.381 (meters)                     COMP
 JV7114  NAD 83(2011) Y  - -4,838,406.842 (meters)                     COMP
 JV7114  NAD 83(2011) Z  -  3,993,271.251 (meters)                     COMP
 JV7114  LAPLACE CORR    -         -1.72  (seconds)                    DEFLEC18
 JV7114
 JV7114  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7114  Standards:
 JV7114         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7114            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7114  -------------------------------------------------------------------
 JV7114  NETWORK    1.73   3.61           0.76   0.65   1.84      0.05618303
 JV7114  -------------------------------------------------------------------
 JV7114  Click here for local accuracies and other accuracy information.
 JV7114
 JV7114.The horizontal coordinates were established by GPS observations
 JV7114.and adjusted by the National Geodetic Survey in June 2012.
 JV7114
 JV7114.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7114.been affixed to the stable North American tectonic plate. See 
 JV7114.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7114
 JV7114.The horizontal coordinates are valid at the epoch date displayed above
 JV7114.which is a decimal equivalence of Year/Month/Day.
 JV7114
 JV7114.The orthometric height was determined by GPS observations and a
 JV7114.high-resolution geoid model.
 JV7114
 JV7114.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7114.GEOID18 height accuracy estimate available here.
 JV7114
 JV7114.Click photographs - Photos may exist for this station.
 JV7114
 JV7114.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7114
 JV7114.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7114
 JV7114.The ellipsoidal height was determined by GPS observations
 JV7114.and is referenced to NAD 83.
 JV7114
 JV7114. The following values were computed from the NAD 83(2011) position.
 JV7114
 JV7114;                    North         East     Units Scale Factor Converg.
 JV7114;SPC MD       -   149,209.682   386,644.192   MT  0.99995261   -0 05 48.4
 JV7114;SPC MD       -   489,532.10  1,268,515.15   sFT  0.99995261   -0 05 48.4
 JV7114;SPC VA N     - 2,150,047.788 3,616,556.062   MT  0.99997189   +0 50 23.8
 JV7114;SPC VA N     - 7,053,948.45 11,865,317.68   sFT  0.99997189   +0 50 23.8
 JV7114;UTM  18      - 4,320,176.062   313,482.352   MT  1.00002839   -1 21 23.0
 JV7114
 JV7114!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7114!SPC MD       -   0.99999308  x   0.99995261  =   0.99994569
 JV7114!SPC VA N     -   0.99999308  x   0.99997189  =   0.99996497
 JV7114!UTM  18      -   0.99999308  x   1.00002839  =   1.00002147
 JV7114
 JV7114_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1348220176(NAD 83)
 JV7114
 JV7114                          SUPERSEDED SURVEY CONTROL
 JV7114
 JV7114  NAD 83(2007)-  39 00 38.66272(N)    077 09 15.14940(W) AD(2002.00) 0
 JV7114  ELLIP H (02/10/07)   44.109  (m)                       GP(2002.00)    
 JV7114  ELLIP H (08/30/02)   44.125  (m)                       GP(       ) 4 2
 JV7114  ELLIP H (04/01/98)   44.072  (m)                       GP(       ) 4 1
 JV7114  NAD 83(1993)-  39 00 38.66250(N)    077 09 15.15019(W) AD(       ) 1
 JV7114  ELLIP H (11/14/94)   44.043  (m)                       GP(       ) 4 2
 JV7114  NAD 83(1991)-  39 00 38.66250(N)    077 09 15.15043(W) AD(       ) 1
 JV7114  ELLIP H (01/11/94)   44.041  (m)                       GP(       ) 4 1
 JV7114
 JV7114.Superseded values are not recommended for survey control.
 JV7114
 JV7114.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7114.See file dsdata.pdf to determine how the superseded data were derived.
 JV7114
 JV7114_MARKER: DD = SURVEY DISK
 JV7114_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7114_STAMPING: T.S. 20322 MC
 JV7114_MARK LOGO: WSSC
 JV7114_PROJECTION: FLUSH
 JV7114_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7114_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7114+STABILITY: SURFACE MOTION
 JV7114_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7114+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2022
 JV7114
 JV7114  HISTORY     - Date     Condition        Report By
 JV7114  HISTORY     - 1993     MONUMENTED       MSI
 JV7114  HISTORY     - 19950317 GOOD             MSI
 JV7114  HISTORY     - 20020907 GOOD             INDIV
 JV7114  HISTORY     - 20050407 GOOD             USPSQD
 JV7114  HISTORY     - 20080407 GOOD             NGS
 JV7114  HISTORY     - 20160809 GOOD             GPI
 JV7114  HISTORY     - 20220320 GOOD             NGS
 JV7114
 JV7114                          STATION DESCRIPTION
 JV7114
 JV7114'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7114'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7114'5.0 MI (8.0 KM) SOUTH OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7114'FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND BRADLEY BOULEVARD
 JV7114'(S.R. 191), PROCEED NORTHEAST ON BRADLEY BLVD FOR 1.4 MI (2.3 KM) TO
 JV7114'THE INTERSECTION WITH SEVEN LOCKS ROAD. CONTINUE EAST ON BRADLEY BLVD
 JV7114'FOR 0.35 MI (0.56 KM) TO THE STATION ON THE LEFT, IN A GRASS MEDIAN.
 JV7114'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7114'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7114'T.S. 20322 MC. THE DISK IS LOCATED 13.2 FT (4.0 M) NORTHEAST OF THE
 JV7114'NORTHEASTERN CURB OF BRADLEY BLVD EAST BOUND, 46.4 FT (14.1 M) SOUTH
 JV7114'OF A MANHOLE, AND 108.0 FT (32.9 M) SOUTHEAST OF POWER POLE NO.
 JV7114'755428-9884.
 JV7114
 JV7114                          STATION RECOVERY (1995)
 JV7114
 JV7114'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1995 (BAC)
 JV7114'RECOVERED AS DESCRIBED.
 JV7114
 JV7114                          STATION RECOVERY (2002)
 JV7114
 JV7114'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (APC)
 JV7114'RECOVERED IN GOOD CONDITION.
 JV7114
 JV7114                          STATION RECOVERY (2005)
 JV7114
 JV7114'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7114'RECOVERED IN GOOD CONDITION.
 JV7114
 JV7114                          STATION RECOVERY (2008)
 JV7114
 JV7114'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7114'RECOVERED IN GOOD CONDITION.
 JV7114
 JV7114                          STATION RECOVERY (2016)
 JV7114
 JV7114'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2016 (LJB)
 JV7114'RECOVERED IN GOOD CONDITION.
 JV7114
 JV7114                          STATION RECOVERY (2022)
 JV7114
 JV7114'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (KA)
 JV7114'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7116 ***********************************************************************
 JV7116  CBN         -  This is a Cooperative Base Network Control Station.
 JV7116  DESIGNATION -  20324
 JV7116  PID         -  JV7116
 JV7116  STATE/COUNTY-  MD/MONTGOMERY
 JV7116  COUNTRY     -  US
 JV7116  USGS QUAD   -  ROCKVILLE (2016)
 JV7116
 JV7116                         *CURRENT SURVEY CONTROL
 JV7116  ______________________________________________________________________
 JV7116* NAD 83(2011) POSITION- 39 05 13.83083(N) 077 09 05.05878(W)   ADJUSTED
 JV7116* NAD 83(2011) ELLIP HT-   102.582 (meters)        (06/27/12)   ADJUSTED
 JV7116* NAD 83(2011) EPOCH   -  2010.00
 JV7116* NAVD 88 ORTHO HEIGHT -   134.3   (meters)      441.    (feet) GPS OBS
 JV7116  ______________________________________________________________________
 JV7116  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7116  GEOID HEIGHT    -        -32.100 (meters)                     GEOID93
 JV7116  GEOID HEIGHT    -        -31.725 (meters)                     GEOID18
 JV7116  NAD 83(2011) X  -  1,102,384.360 (meters)                     COMP
 JV7116  NAD 83(2011) Y  - -4,833,185.150 (meters)                     COMP
 JV7116  NAD 83(2011) Z  -  3,999,898.184 (meters)                     COMP
 JV7116  LAPLACE CORR    -         -1.70  (seconds)                    DEFLEC18
 JV7116
 JV7116  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7116  Standards:
 JV7116         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7116            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7116  -------------------------------------------------------------------
 JV7116  NETWORK    0.60   1.33           0.27   0.21   0.68      0.02581930
 JV7116  -------------------------------------------------------------------
 JV7116  Click here for local accuracies and other accuracy information.
 JV7116
 JV7116.The horizontal coordinates were established by GPS observations
 JV7116.and adjusted by the National Geodetic Survey in June 2012.
 JV7116
 JV7116.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7116.been affixed to the stable North American tectonic plate. See 
 JV7116.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7116
 JV7116.The horizontal coordinates are valid at the epoch date displayed above
 JV7116.which is a decimal equivalence of Year/Month/Day.
 JV7116
 JV7116.The orthometric height was determined by GPS observations and a
 JV7116.high-resolution geoid model.
 JV7116
 JV7116.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7116.GEOID18 height accuracy estimate available here.
 JV7116
 JV7116.Click photographs - Photos may exist for this station.
 JV7116
 JV7116.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7116
 JV7116.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7116
 JV7116.The ellipsoidal height was determined by GPS observations
 JV7116.and is referenced to NAD 83.
 JV7116
 JV7116. The following values were computed from the NAD 83(2011) position.
 JV7116
 JV7116;                    North         East     Units Scale Factor Converg.
 JV7116;SPC MD       -   157,694.500   386,900.994   MT  0.99995663   -0 05 42.1
 JV7116;SPC MD       -   517,369.37  1,269,357.68   sFT  0.99995663   -0 05 42.1
 JV7116;UTM  18      - 4,328,653.794   313,925.805   MT  1.00002634   -1 21 24.7
 JV7116
 JV7116!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7116!SPC MD       -   0.99998391  x   0.99995663  =   0.99994054
 JV7116!UTM  18      -   0.99998391  x   1.00002634  =   1.00001025
 JV7116
 JV7116_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1392528653(NAD 83)
 JV7116
 JV7116                          SUPERSEDED SURVEY CONTROL
 JV7116
 JV7116  NAD 83(2007)-  39 05 13.83106(N)    077 09 05.05937(W) AD(2002.00) 0
 JV7116  ELLIP H (02/10/07)  102.579  (m)                       GP(2002.00)    
 JV7116  NAD 83(1991)-  39 05 13.83096(N)    077 09 05.05953(W) AD(       ) A
 JV7116  ELLIP H (02/12/02)  102.615  (m)                       GP(       ) 4 1
 JV7116  NAD 83(1991)-  39 05 13.83041(N)    077 09 05.05943(W) AD(       ) 1
 JV7116  ELLIP H (01/11/94)  102.512  (m)                       GP(       ) 4 1
 JV7116
 JV7116.Superseded values are not recommended for survey control.
 JV7116
 JV7116.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7116.See file dsdata.pdf to determine how the superseded data were derived.
 JV7116
 JV7116_MARKER: DD = SURVEY DISK
 JV7116_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7116_STAMPING: T.S. 20324 MC
 JV7116_MARK LOGO: MSI
 JV7116_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV7116_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7116+STABILITY: SURFACE MOTION
 JV7116_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7116+SATELLITE: SATELLITE OBSERVATIONS - December 27, 2006
 JV7116
 JV7116  HISTORY     - Date     Condition        Report By
 JV7116  HISTORY     - 1993     MONUMENTED       MSI
 JV7116  HISTORY     - 20000501 GOOD             MDSHA
 JV7116  HISTORY     - 20020118 GOOD             URS
 JV7116  HISTORY     - 20020125 GOOD             MDSHA
 JV7116  HISTORY     - 20021017 GOOD             POWELL
 JV7116  HISTORY     - 20030908 GOOD             URS
 JV7116  HISTORY     - 20061227 GOOD             NGS
 JV7116  HISTORY     - 20091218 GOOD             MDSHA
 JV7116
 JV7116                          STATION DESCRIPTION
 JV7116
 JV7116'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7116'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7116'0.5 MI (0.8 KM) NORTHWEST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7116'STATION FROM THE INTERSECTION OF GUDE DRIVE AND HUNGERFORD DRIVE
 JV7116'(S.R. 355), PROCEED SOUTH ON HUNGERFORD DRIVE FOR 1.4 MI (2.3 KM) TO
 JV7116'THE INTERSECTION WITH BEALL AVENUE. TURN RIGHT AND TRAVEL WEST ON
 JV7116'BEALL AVENUE FOR 0.1 MI (0.2 KM) TO THE STATION ON THE RIGHT.
 JV7116'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7116'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7116'T.S. 20324 MC. THE DISK IS LOCATED 35.5 FT (10.8 M) NORTH OF THE
 JV7116'CENTER LINE OF BEALL AVENUE, 31.8 FT (9.7 M) EAST OF A LAMP POST, AND
 JV7116'77.0 FT (23.5 M) WEST OF THE CENTER LINE OF A PARKING ENTRANCE.
 JV7116
 JV7116                          STATION RECOVERY (2000)
 JV7116
 JV7116'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV7116'RECOVERED AS DESCRIBED.
 JV7116
 JV7116                          STATION RECOVERY (2002)
 JV7116
 JV7116'RECOVERY NOTE BY URS COMPANY 2002 (EN)
 JV7116'RECOVERED IN GOOD CONDITION.
 JV7116
 JV7116                          STATION RECOVERY (2002)
 JV7116
 JV7116'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV7116'RECOVERED AS DESCRIBED.
 JV7116
 JV7116                          STATION RECOVERY (2002)
 JV7116
 JV7116'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7116'RECOVERED IN GOOD CONDITION.
 JV7116
 JV7116                          STATION RECOVERY (2003)
 JV7116
 JV7116'RECOVERY NOTE BY URS COMPANY 2003 (ML)
 JV7116'RECOVERED IN GOOD CONDITION.
 JV7116
 JV7116                          STATION RECOVERY (2006)
 JV7116
 JV7116'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV7116'RECOVERED IN GOOD CONDITION.
 JV7116
 JV7116                          STATION RECOVERY (2009)
 JV7116
 JV7116'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (JMR)
 JV7116'RECOVERED IN GOOD CONDITION
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7117 ***********************************************************************
 JV7117  DESIGNATION -  20325
 JV7117  PID         -  JV7117
 JV7117  STATE/COUNTY-  MD/MONTGOMERY
 JV7117  COUNTRY     -  US
 JV7117  USGS QUAD   -  ROCKVILLE (2016)
 JV7117
 JV7117                         *CURRENT SURVEY CONTROL
 JV7117  ______________________________________________________________________
 JV7117* NAD 83(2011) POSITION- 39 00 31.73613(N) 077 07 47.24075(W)   ADJUSTED
 JV7117* NAD 83(2011) ELLIP HT-    66.602 (meters)        (06/27/12)   ADJUSTED
 JV7117* NAD 83(2011) EPOCH   -  2010.00
 JV7117* NAVD 88 ORTHO HEIGHT -    98.4   (meters)      323.    (feet) GPS OBS
 JV7117  ______________________________________________________________________
 JV7117  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7117  GEOID HEIGHT    -        -32.180 (meters)                     GEOID93
 JV7117  GEOID HEIGHT    -        -31.804 (meters)                     GEOID18
 JV7117  NAD 83(2011) X  -  1,105,422.189 (meters)                     COMP
 JV7117  NAD 83(2011) Y  - -4,838,084.305 (meters)                     COMP
 JV7117  NAD 83(2011) Z  -  3,993,119.465 (meters)                     COMP
 JV7117  LAPLACE CORR    -         -2.36  (seconds)                    DEFLEC18
 JV7117
 JV7117  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7117  Standards:
 JV7117         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7117            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7117  -------------------------------------------------------------------
 JV7117  NETWORK    1.48   2.86           0.67   0.51   1.46     -0.22060977
 JV7117  -------------------------------------------------------------------
 JV7117  Click here for local accuracies and other accuracy information.
 JV7117
 JV7117.The horizontal coordinates were established by GPS observations
 JV7117.and adjusted by the National Geodetic Survey in June 2012.
 JV7117
 JV7117.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7117.been affixed to the stable North American tectonic plate. See 
 JV7117.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7117
 JV7117.The horizontal coordinates are valid at the epoch date displayed above
 JV7117.which is a decimal equivalence of Year/Month/Day.
 JV7117
 JV7117.The orthometric height was determined by GPS observations and a
 JV7117.high-resolution geoid model.
 JV7117
 JV7117.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7117.GEOID18 height accuracy estimate available here.
 JV7117
 JV7117.Click photographs - Photos may exist for this station.
 JV7117
 JV7117.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7117
 JV7117.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7117
 JV7117.The ellipsoidal height was determined by GPS observations
 JV7117.and is referenced to NAD 83.
 JV7117
 JV7117. The following values were computed from the NAD 83(2011) position.
 JV7117
 JV7117;                    North         East     Units Scale Factor Converg.
 JV7117;SPC MD       -   148,992.820   388,758.770   MT  0.99995253   -0 04 53.3
 JV7117;SPC MD       -   488,820.61  1,275,452.73   sFT  0.99995253   -0 04 53.3
 JV7117;SPC VA N     - 2,149,865.519 3,618,673.943   MT  0.99997166   +0 51 18.6
 JV7117;SPC VA N     - 7,053,350.46 11,872,266.09   sFT  0.99997166   +0 51 18.6
 JV7117;UTM  18      - 4,319,912.752   315,591.801   MT  1.00001875   -1 20 27.4
 JV7117
 JV7117!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7117!SPC MD       -   0.99998955  x   0.99995253  =   0.99994208
 JV7117!SPC VA N     -   0.99998955  x   0.99997166  =   0.99996121
 JV7117!UTM  18      -   0.99998955  x   1.00001875  =   1.00000830
 JV7117
 JV7117_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1559119912(NAD 83)
 JV7117
 JV7117                          SUPERSEDED SURVEY CONTROL
 JV7117
 JV7117  NAD 83(2007)-  39 00 31.73632(N)    077 07 47.24144(W) AD(2002.00) 0
 JV7117  ELLIP H (02/10/07)   66.630  (m)                       GP(2002.00)    
 JV7117  ELLIP H (08/30/02)   66.644  (m)                       GP(       ) 4 2
 JV7117  NAD 83(1991)-  39 00 31.73609(N)    077 07 47.24220(W) AD(       ) 1
 JV7117  ELLIP H (01/11/94)   66.562  (m)                       GP(       ) 4 1
 JV7117
 JV7117.Superseded values are not recommended for survey control.
 JV7117
 JV7117.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7117.See file dsdata.pdf to determine how the superseded data were derived.
 JV7117
 JV7117_MARKER: DD = SURVEY DISK
 JV7117_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7117_STAMPING: T.S. 20325 MC
 JV7117_MARK LOGO: WSSC
 JV7117_PROJECTION: FLUSH
 JV7117_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7117_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7117+STABILITY: SURFACE MOTION
 JV7117_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7117+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2022
 JV7117
 JV7117  HISTORY     - Date     Condition        Report By
 JV7117  HISTORY     - 1993     MONUMENTED       MSI
 JV7117  HISTORY     - 20021203 GOOD             POWELL
 JV7117  HISTORY     - 20080407 GOOD             NGS
 JV7117  HISTORY     - 20220320 GOOD             NGS
 JV7117
 JV7117                          STATION DESCRIPTION
 JV7117
 JV7117'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7117'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7117'3.1 MI (5.0 KM) NORTHWEST OF THE TOWN OF CHEVY CHASE. TO REACH THE
 JV7117'STATION FROM THE INTERSECTION OF WILSON LANE (S.R. 188) AND OLD
 JV7117'GEORGETOWN ROAD (S.R. 187), PROCEED NORTHWEST ON OLD GEORGETOWN ROAD
 JV7117'FOR 1.9 MI (3.1 KM) TO THE INTERSECTION WITH BEECH AVENUE.  TURN LEFT
 JV7117'AND TRAVEL WEST ON BEECH AVENUE FOR 0.1 MI (0.2 KM) TO THE
 JV7117'INTERSECTION WITH WILMETT ROAD. TURN RIGHT AND TRAVEL WEST ON WILMETT
 JV7117'ROAD FOR 0.7 MI (1.1 KM) TO THE INTERSECTION WITH KIRKDALE ROAD, AND
 JV7117'THE STATION ON THE RIGHT.
 JV7117'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7117'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7117'T.S. 20325 MC. THE DISK IS LOCATED 35.0 FT (10.7 M) NORTH OF THE
 JV7117'CENTER LINE OF WILMETT ROAD, 16.5 FT (5.0 M) EAST OF THE CENTER LINE
 JV7117'OF KIRKDALE ROAD, AND 48.0 FT (14.6 M) SOUTHWEST OF THE SOUTHWEST
 JV7117'CORNER OF HOUSE NO. 6405.
 JV7117
 JV7117                          STATION RECOVERY (2002)
 JV7117
 JV7117'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7117'RECOVERED IN GOOD CONDITION.
 JV7117
 JV7117                          STATION RECOVERY (2008)
 JV7117
 JV7117'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7117'RECOVERED IN GOOD CONDITION.
 JV7117
 JV7117                          STATION RECOVERY (2022)
 JV7117
 JV7117'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (KA)
 JV7117'RECOVERED AS DESCRIBED.  NEW HOUSE UNDER CONSTRUCTION BUT MARK IS NOT
 JV7117'DISTURBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7118 ***********************************************************************
 JV7118  DESIGNATION -  20326
 JV7118  PID         -  JV7118
 JV7118  STATE/COUNTY-  MD/MONTGOMERY
 JV7118  COUNTRY     -  US
 JV7118  USGS QUAD   -  ROCKVILLE (2016)
 JV7118
 JV7118                         *CURRENT SURVEY CONTROL
 JV7118  ______________________________________________________________________
 JV7118* NAD 83(2011) POSITION- 39 03 10.26019(N) 077 07 44.88131(W)   ADJUSTED
 JV7118* NAD 83(2011) ELLIP HT-    66.819 (meters)        (06/27/12)   ADJUSTED
 JV7118* NAD 83(2011) EPOCH   -  2010.00
 JV7118* NAVD 88 ORTHO HEIGHT -    98.6   (meters)      323.    (feet) GPS OBS
 JV7118  ______________________________________________________________________
 JV7118  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7118  GEOID HEIGHT    -        -32.140 (meters)                     GEOID93
 JV7118  GEOID HEIGHT    -        -31.766 (meters)                     GEOID18
 JV7118  NAD 83(2011) X  -  1,104,791.813 (meters)                     COMP
 JV7118  NAD 83(2011) Y  - -4,835,070.644 (meters)                     COMP
 JV7118  NAD 83(2011) Z  -  3,996,917.089 (meters)                     COMP
 JV7118  LAPLACE CORR    -         -2.40  (seconds)                    DEFLEC18
 JV7118
 JV7118  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7118  Standards:
 JV7118         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7118            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7118  -------------------------------------------------------------------
 JV7118  NETWORK    1.17   2.31           0.51   0.43   1.18     -0.23378208
 JV7118  -------------------------------------------------------------------
 JV7118  Click here for local accuracies and other accuracy information.
 JV7118
 JV7118.The horizontal coordinates were established by GPS observations
 JV7118.and adjusted by the National Geodetic Survey in June 2012.
 JV7118
 JV7118.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7118.been affixed to the stable North American tectonic plate. See 
 JV7118.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7118
 JV7118.The horizontal coordinates are valid at the epoch date displayed above
 JV7118.which is a decimal equivalence of Year/Month/Day.
 JV7118
 JV7118.The orthometric height was determined by GPS observations and a
 JV7118.high-resolution geoid model.
 JV7118
 JV7118.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7118.GEOID18 height accuracy estimate available here.
 JV7118
 JV7118.Click photographs - Photos may exist for this station.
 JV7118
 JV7118.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7118
 JV7118.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7118
 JV7118.The ellipsoidal height was determined by GPS observations
 JV7118.and is referenced to NAD 83.
 JV7118
 JV7118. The following values were computed from the NAD 83(2011) position.
 JV7118
 JV7118;                    North         East     Units Scale Factor Converg.
 JV7118;SPC MD       -   153,881.041   388,822.450   MT  0.99995461   -0 04 51.8
 JV7118;SPC MD       -   504,858.05  1,275,661.65   sFT  0.99995461   -0 04 51.8
 JV7118;UTM  18      - 4,324,798.706   315,762.976   MT  1.00001797   -1 20 30.5
 JV7118
 JV7118!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7118!SPC MD       -   0.99998952  x   0.99995461  =   0.99994413
 JV7118!UTM  18      -   0.99998952  x   1.00001797  =   1.00000749
 JV7118
 JV7118_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1576224798(NAD 83)
 JV7118
 JV7118                          SUPERSEDED SURVEY CONTROL
 JV7118
 JV7118  NAD 83(2007)-  39 03 10.26040(N)    077 07 44.88206(W) AD(2002.00) 0
 JV7118  ELLIP H (02/10/07)   66.845  (m)                       GP(2002.00)    
 JV7118  ELLIP H (08/30/02)   66.866  (m)                       GP(       ) 4 2
 JV7118  NAD 83(1991)-  39 03 10.25993(N)    077 07 44.88256(W) AD(       ) 1
 JV7118  ELLIP H (01/11/94)   66.778  (m)                       GP(       ) 4 1
 JV7118
 JV7118.Superseded values are not recommended for survey control.
 JV7118
 JV7118.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7118.See file dsdata.pdf to determine how the superseded data were derived.
 JV7118
 JV7118_MARKER: DD = SURVEY DISK
 JV7118_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7118_STAMPING: T.S. 20326 MC
 JV7118_MARK LOGO: WSSC
 JV7118_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7118_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7118+STABILITY: SURFACE MOTION
 JV7118_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7118+SATELLITE: SATELLITE OBSERVATIONS - January 18, 2002
 JV7118
 JV7118  HISTORY     - Date     Condition        Report By
 JV7118  HISTORY     - 1993     MONUMENTED       MSI
 JV7118  HISTORY     - 19970905 GOOD             DMW
 JV7118  HISTORY     - 20020118 GOOD             URS
 JV7118
 JV7118                          STATION DESCRIPTION
 JV7118
 JV7118'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7118'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7118'2.3 MI (3.7 KM) SOUTH OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7118'FROM THE INTERSECTION OF ROCKVILLE PIKE (S.R. 355) AND MONTROSE ROAD,
 JV7118'PROCEED WEST ALONG MONTROSE ROAD FOR 0.7 MI (1.1 KM) TO THE
 JV7118'INTERSECTION WITH SHAGBARK DRIVE, AND THE STATION ON THE LEFT.
 JV7118'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7118'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7118'T.S. 20326 MC. THE DISK IS LOCATED 15.5 FT (4.7 M) SOUTH OF THE
 JV7118'SOUTHERN CURB OF MONTROSE ROAD, 43.0 FT (13.1 M) EAST OF THE CENTER
 JV7118'LINE OF SHAGBARK DRIVE, AND 81.3 FT (24.8 M) NORTHEAST OF A MAN HOLE
 JV7118'COVER ON A STORM DRAIN.
 JV7118
 JV7118                          STATION RECOVERY (1997)
 JV7118
 JV7118'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV7118'RECOVERED AS DESCRIBED.
 JV7118
 JV7118                          STATION RECOVERY (2002)
 JV7118
 JV7118'RECOVERY NOTE BY URS COMPANY 2002 (EN)
 JV7118'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7119 ***********************************************************************
 JV7119  DESIGNATION -  20327
 JV7119  PID         -  JV7119
 JV7119  STATE/COUNTY-  MD/MONTGOMERY
 JV7119  COUNTRY     -  US
 JV7119  USGS QUAD   -  ROCKVILLE (2016)
 JV7119
 JV7119                         *CURRENT SURVEY CONTROL
 JV7119  ______________________________________________________________________
 JV7119* NAD 83(2011) POSITION- 39 05 06.03701(N) 077 07 48.53709(W)   ADJUSTED
 JV7119* NAD 83(2011) ELLIP HT-    96.386 (meters)        (06/27/12)   ADJUSTED
 JV7119* NAD 83(2011) EPOCH   -  2010.00
 JV7119* NAVD 88 ORTHO HEIGHT -   128.1   (meters)      420.    (feet) GPS OBS
 JV7119  ______________________________________________________________________
 JV7119  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7119  GEOID HEIGHT    -        -32.120 (meters)                     GEOID93
 JV7119  GEOID HEIGHT    -        -31.749 (meters)                     GEOID18
 JV7119  NAD 83(2011) X  -  1,104,210.018 (meters)                     COMP
 JV7119  NAD 83(2011) Y  - -4,832,918.889 (meters)                     COMP
 JV7119  NAD 83(2011) Z  -  3,999,707.718 (meters)                     COMP
 JV7119  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 JV7119
 JV7119  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7119  Standards:
 JV7119         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7119            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7119  -------------------------------------------------------------------
 JV7119  NETWORK    1.01   2.00           0.44   0.38   1.02     -0.17351715
 JV7119  -------------------------------------------------------------------
 JV7119  Click here for local accuracies and other accuracy information.
 JV7119
 JV7119.The horizontal coordinates were established by GPS observations
 JV7119.and adjusted by the National Geodetic Survey in June 2012.
 JV7119
 JV7119.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7119.been affixed to the stable North American tectonic plate. See 
 JV7119.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7119
 JV7119.The horizontal coordinates are valid at the epoch date displayed above
 JV7119.which is a decimal equivalence of Year/Month/Day.
 JV7119
 JV7119.The orthometric height was determined by GPS observations and a
 JV7119.high-resolution geoid model.
 JV7119
 JV7119.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7119.GEOID18 height accuracy estimate available here.
 JV7119
 JV7119.Click photographs - Photos may exist for this station.
 JV7119
 JV7119.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7119
 JV7119.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7119
 JV7119.The ellipsoidal height was determined by GPS observations
 JV7119.and is referenced to NAD 83.
 JV7119
 JV7119. The following values were computed from the NAD 83(2011) position.
 JV7119
 JV7119;                    North         East     Units Scale Factor Converg.
 JV7119;SPC MD       -   157,451.328   388,739.641   MT  0.99995649   -0 04 54.1
 JV7119;SPC MD       -   516,571.57  1,275,389.97   sFT  0.99995649   -0 04 54.1
 JV7119;UTM  18      - 4,328,370.175   315,758.772   MT  1.00001799   -1 20 36.2
 JV7119
 JV7119!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7119!SPC MD       -   0.99998488  x   0.99995649  =   0.99994137
 JV7119!UTM  18      -   0.99998488  x   1.00001799  =   1.00000287
 JV7119
 JV7119_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1575828370(NAD 83)
 JV7119
 JV7119                          SUPERSEDED SURVEY CONTROL
 JV7119
 JV7119  NAD 83(2007)-  39 05 06.03723(N)    077 07 48.53786(W) AD(2002.00) 0
 JV7119  ELLIP H (02/10/07)   96.408  (m)                       GP(2002.00)    
 JV7119  ELLIP H (08/30/02)   96.436  (m)                       GP(       ) 4 2
 JV7119  NAD 83(1991)-  39 05 06.03671(N)    077 07 48.53810(W) AD(       ) 1
 JV7119  ELLIP H (01/11/94)   96.340  (m)                       GP(       ) 4 1
 JV7119
 JV7119.Superseded values are not recommended for survey control.
 JV7119
 JV7119.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7119.See file dsdata.pdf to determine how the superseded data were derived.
 JV7119
 JV7119_MARKER: DD = SURVEY DISK
 JV7119_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7119_STAMPING: T.S. 20327 MC
 JV7119_MARK LOGO: WSSC
 JV7119_PROJECTION: FLUSH
 JV7119_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7119_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7119+STABILITY: SURFACE MOTION
 JV7119_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7119+SATELLITE: SATELLITE OBSERVATIONS - March 12, 2023
 JV7119
 JV7119  HISTORY     - Date     Condition        Report By
 JV7119  HISTORY     - 1993     MONUMENTED       MSI
 JV7119  HISTORY     - 20021017 GOOD             POWELL
 JV7119  HISTORY     - 20131001 GOOD             BASE9
 JV7119  HISTORY     - 20230312 GOOD             NGS
 JV7119
 JV7119                          STATION DESCRIPTION
 JV7119
 JV7119'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7119'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPRXIMATELY
 JV7119'0.9 MI (1.4 KM) EAST OF ROCKVILLE CENTER.  TO REACH THE STATION FROM
 JV7119'THE INTERSECTION OF VEIRS MILL ROAD (S.R. 586) AND NORBECK ROAD (S.R.
 JV7119'28), PROCEED NORTH ON NORBECK ROAD FOR 0.35 MI (0.56 KM) TO THE
 JV7119'INTERSECTION WITH BALTIMORE ROAD. TURN RIGHT AND PROCEED EAST ON
 JV7119'BALTIMORE ROAD FOR 0.33 MI (0.53 KM) TO THE INTERSECTION WITH
 JV7119'EDMONSTON DRIVE. TURN LEFT AND PROCEED NORTH AND WEST ON EDMONSTON
 JV7119'DRIVE FOR APPROXIMATELY 150 FT (45.7 M) TO THE ENTRANCE TO THE
 JV7119'ROCKVILLE CIVIC CENTER. TURN RIGHT AND PROCEED NORTHEAST ON THE
 JV7119'ENTRANCE ROADWAY TO THE CIVIC CENTER FOR 0.1 MI (0.2 KM) TO THE
 JV7119'PARKING AREA, AND THE STATION ON THE LEFT.
 JV7119'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7119'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7119'T.S. 20327 MC. THE DISK IS LOCATED APPROXIMATELY 45.3 FT (13.8 M)
 JV7119'SOUTH OF LAMP POLE NO. 1, 104 FT (31.7 M) EAST OF A CHAIN LINK
 JV7119'FENCELINE, AND 90 FT (27.4 M) NORTHWEST OF LAMP POLE NO. 2.
 JV7119
 JV7119                          STATION RECOVERY (2002)
 JV7119
 JV7119'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7119'RECOVERED IN GOOD CONDITION.
 JV7119
 JV7119                          STATION RECOVERY (2013)
 JV7119
 JV7119'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV7119'RECOVERED IN GOOD CONDITION.
 JV7119
 JV7119                          STATION RECOVERY (2023)
 JV7119
 JV7119'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2023 (KA)
 JV7119'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7121 ***********************************************************************
 JV7121  DESIGNATION -  20329
 JV7121  PID         -  JV7121
 JV7121  STATE/COUNTY-  MD/MONTGOMERY
 JV7121  COUNTRY     -  US
 JV7121  USGS QUAD   -  GAITHERSBURG (2016)
 JV7121
 JV7121                         *CURRENT SURVEY CONTROL
 JV7121  ______________________________________________________________________
 JV7121* NAD 83(2011) POSITION- 39 10 46.68672(N) 077 13 52.61390(W)   ADJUSTED
 JV7121* NAD 83(2011) ELLIP HT-    94.797 (meters)        (06/27/12)   ADJUSTED
 JV7121* NAD 83(2011) EPOCH   -  2010.00
 JV7121* NAVD 88 ORTHO HEIGHT -   126.6   (meters)      415.    (feet) GPS OBS
 JV7121  ______________________________________________________________________
 JV7121  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7121  GEOID HEIGHT    -        -32.150 (meters)                     GEOID93
 JV7121  GEOID HEIGHT    -        -31.795 (meters)                     GEOID18
 JV7121  NAD 83(2011) X  -  1,094,212.138 (meters)                     COMP
 JV7121  NAD 83(2011) Y  - -4,828,393.160 (meters)                     COMP
 JV7121  NAD 83(2011) Z  -  4,007,855.520 (meters)                     COMP
 JV7121  LAPLACE CORR    -          1.74  (seconds)                    DEFLEC18
 JV7121
 JV7121  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7121  Standards:
 JV7121         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7121            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7121  -------------------------------------------------------------------
 JV7121  NETWORK    1.44   2.92           0.64   0.53   1.49      0.02707619
 JV7121  -------------------------------------------------------------------
 JV7121  Click here for local accuracies and other accuracy information.
 JV7121
 JV7121.The horizontal coordinates were established by GPS observations
 JV7121.and adjusted by the National Geodetic Survey in June 2012.
 JV7121
 JV7121.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7121.been affixed to the stable North American tectonic plate. See 
 JV7121.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7121
 JV7121.The horizontal coordinates are valid at the epoch date displayed above
 JV7121.which is a decimal equivalence of Year/Month/Day.
 JV7121
 JV7121.The orthometric height was determined by GPS observations and a
 JV7121.high-resolution geoid model.
 JV7121
 JV7121.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7121.GEOID18 height accuracy estimate available here.
 JV7121
 JV7121.Click photographs - Photos may exist for this station.
 JV7121
 JV7121.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7121
 JV7121.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7121
 JV7121.The ellipsoidal height was determined by GPS observations
 JV7121.and is referenced to NAD 83.
 JV7121
 JV7121. The following values were computed from the NAD 83(2011) position.
 JV7121
 JV7121;                    North         East     Units Scale Factor Converg.
 JV7121;SPC MD       -   167,973.265   380,016.405   MT  0.99996387   -0 08 42.6
 JV7121;SPC MD       -   551,092.29  1,246,770.49   sFT  0.99996387   -0 08 42.6
 JV7121;UTM  18      - 4,339,082.702   307,268.970   MT  1.00005739   -1 24 36.2
 JV7121
 JV7121!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7121!SPC MD       -   0.99998513  x   0.99996387  =   0.99994900
 JV7121!UTM  18      -   0.99998513  x   1.00005739  =   1.00004252
 JV7121
 JV7121_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0726839082(NAD 83)
 JV7121
 JV7121                          SUPERSEDED SURVEY CONTROL
 JV7121
 JV7121  NAD 83(2007)-  39 10 46.68693(N)    077 13 52.61466(W) AD(2002.00) 0
 JV7121  ELLIP H (02/10/07)   94.827  (m)                       GP(2002.00)    
 JV7121  ELLIP H (08/30/02)   94.834  (m)                       GP(       ) 4 2
 JV7121  NAD 83(1991)-  39 10 46.68632(N)    077 13 52.61463(W) AD(       ) 1
 JV7121  ELLIP H (01/11/94)   94.767  (m)                       GP(       ) 4 1
 JV7121
 JV7121.Superseded values are not recommended for survey control.
 JV7121
 JV7121.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7121.See file dsdata.pdf to determine how the superseded data were derived.
 JV7121
 JV7121_MARKER: DD = SURVEY DISK
 JV7121_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7121_STAMPING: T.S. 20329 MC
 JV7121_MARK LOGO: WSSC
 JV7121_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7121_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7121+STABILITY: SURFACE MOTION
 JV7121_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7121+SATELLITE: SATELLITE OBSERVATIONS - April 07, 2005
 JV7121
 JV7121  HISTORY     - Date     Condition        Report By
 JV7121  HISTORY     - 1993     MONUMENTED       MSI
 JV7121  HISTORY     - 19970628 GOOD             DMW
 JV7121  HISTORY     - 20040324 GOOD             URS
 JV7121  HISTORY     - 20050407 GOOD             USPSQD
 JV7121
 JV7121                          STATION DESCRIPTION
 JV7121
 JV7121'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7121'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7121'1.9 MI (3.1 KM) EAST OF THE TOWN OF GERMANTOWN.  TO REACH THE STATION
 JV7121'FROM THE INTERSECTION OF MIDDLEBROOK ROAD AND FREDERICK ROAD (S.R.
 JV7121'355), PROCEED SOUTH ON FREDERICK ROAD FOR APPROXIMATELY 500 FT
 JV7121'(152.4 M) TO THE INTERSECTION WITH BLUNT ROAD.  TURN LEFT AND TRAVEL
 JV7121'NORTHEAST ON BLUNT ROAD FOR 0.3 MI (0.5 KM) TO THE INTERSECTION WITH
 JV7121'MINSTREL TUNE WAY.  TURN RIGHT AND TRAVEL SOUTH ON MINSTREL TUNE WAY
 JV7121'FOR 0.1 MI (0.2 KM) TO INTERSECTION WITH MINSTREL TUNE DRIVE. TURN
 JV7121'LEFT AND TRAVEL EAST ON MINSTREL TUNE DRIVE FOR 0.2 MI (0.3 KM) TO
 JV7121'THE STATION ON THE RIGHT.
 JV7121'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7121'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7121'T.S. 20329 MC. THE DISK IS LOCATED 3.3 FT (1.0 M) WEST OF THE CURB,
 JV7121'42.9 FT (13.1 M) NORTHWEST OF A MANHOLE, AND 77.0 FT (23.5 M)
 JV7121'NORTHEAST OF THE SOUTHEAST CORNER OF HOUSE NO. 11206.
 JV7121
 JV7121                          STATION RECOVERY (1997)
 JV7121
 JV7121'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV7121'RECOVERED AS DESCRIBED.
 JV7121
 JV7121                          STATION RECOVERY (2004)
 JV7121
 JV7121'RECOVERY NOTE BY URS COMPANY 2004
 JV7121'RECOVERED IN GOOD CONDITION.
 JV7121
 JV7121                          STATION RECOVERY (2005)
 JV7121
 JV7121'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7121'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1335 ***********************************************************************
 HV1335  DESIGNATION -  2033 WSSC
 HV1335  PID         -  HV1335
 HV1335  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1335  COUNTRY     -  US
 HV1335  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1335
 HV1335                         *CURRENT SURVEY CONTROL
 HV1335  ______________________________________________________________________
 HV1335* NAD 83(1986) POSITION- 38 54 37.     (N) 076 55 53.     (W)   SCALED
 HV1335* NAVD 88 ORTHO HEIGHT -     7.75  (+/-2cm)       25.4   (feet) VERTCON3
 HV1335  ______________________________________________________________________
 HV1335  GEOID HEIGHT    -        -32.253 (meters)                     GEOID18
 HV1335  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1335
 HV1335.The horizontal coordinates were scaled from a map and have
 HV1335.an estimated accuracy of +/- 6 seconds.
 HV1335
 HV1335.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1335.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1335
 HV1335.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1335.GEOID18 height accuracy estimate available here.
 HV1335
 HV1335.The vertical order pertains to the NGVD 29 superseded value.
 HV1335
 HV1335.Click photographs - Photos may exist for this station.
 HV1335
 HV1335;                    North         East    Units  Estimated Accuracy
 HV1335;SPC MD       -   138,050.      405,950.      MT  (+/- 180 meters Scaled)
 HV1335
 HV1335_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ325085(NAD 83)
 HV1335
 HV1335                          SUPERSEDED SURVEY CONTROL
 HV1335
 HV1335  NGVD 29 (11/26/84)    7.987  (m)           26.20   (f) ADJUSTED    2 0
 HV1335
 HV1335.Superseded values are not recommended for survey control.
 HV1335
 HV1335.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1335.See file dsdata.pdf to determine how the superseded data were derived.
 HV1335
 HV1335_MARKER: DD = SURVEY DISK
 HV1335_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1335_SP_SET: PILLAR
 HV1335_STAMPING: 2033
 HV1335_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1335
 HV1335  HISTORY     - Date     Condition        Report By
 HV1335  HISTORY     - UNK      MONUMENTED       WSSC
 HV1335  HISTORY     - 1944     GOOD             WSSC
 HV1335
 HV1335                          STATION DESCRIPTION
 HV1335
 HV1335'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1335'AT MD DC LINE.
 HV1335'ON EASTERN AVENUE, AT THE PENNSYLVANIA RAILROAD FREIGHT LINE
 HV1335'OVERPASS, IN THE EASTERNMOST PILLAR SUPPORTING THE OVERPASS,
 HV1335'ABOUT 3 FEET ABOVE THE PAVEMENT ON EASTERN AVENUE, AND SET
 HV1335'VERTICALLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7122 ***********************************************************************
 JV7122  DESIGNATION -  20330
 JV7122  PID         -  JV7122
 JV7122  STATE/COUNTY-  MD/MONTGOMERY
 JV7122  COUNTRY     -  US
 JV7122  USGS QUAD   -  GAITHERSBURG (2016)
 JV7122
 JV7122                         *CURRENT SURVEY CONTROL
 JV7122  ______________________________________________________________________
 JV7122* NAD 83(2011) POSITION- 39 08 02.35103(N) 077 12 10.05526(W)   ADJUSTED
 JV7122* NAD 83(2011) ELLIP HT-   104.539 (meters)        (06/27/12)   ADJUSTED
 JV7122* NAD 83(2011) EPOCH   -  2010.00
 JV7122* NAVD 88 ORTHO HEIGHT -   136.3   (meters)      447.    (feet) GPS OBS
 JV7122  ______________________________________________________________________
 JV7122  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7122  GEOID HEIGHT    -        -32.100 (meters)                     GEOID93
 JV7122  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 JV7122  NAD 83(2011) X  -  1,097,323.272 (meters)                     COMP
 JV7122  NAD 83(2011) Y  - -4,830,976.501 (meters)                     COMP
 JV7122  NAD 83(2011) Z  -  4,003,931.886 (meters)                     COMP
 JV7122  LAPLACE CORR    -          1.06  (seconds)                    DEFLEC18
 JV7122
 JV7122  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7122  Standards:
 JV7122         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7122            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7122  -------------------------------------------------------------------
 JV7122  NETWORK    1.22   2.63           0.51   0.49   1.34      0.07565467
 JV7122  -------------------------------------------------------------------
 JV7122  Click here for local accuracies and other accuracy information.
 JV7122
 JV7122.The horizontal coordinates were established by GPS observations
 JV7122.and adjusted by the National Geodetic Survey in June 2012.
 JV7122
 JV7122.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7122.been affixed to the stable North American tectonic plate. See 
 JV7122.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7122
 JV7122.The horizontal coordinates are valid at the epoch date displayed above
 JV7122.which is a decimal equivalence of Year/Month/Day.
 JV7122
 JV7122.The orthometric height was determined by GPS observations and a
 JV7122.high-resolution geoid model.
 JV7122
 JV7122.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7122.GEOID18 height accuracy estimate available here.
 JV7122
 JV7122.Click photographs - Photos may exist for this station.
 JV7122
 JV7122.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7122
 JV7122.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7122
 JV7122.The ellipsoidal height was determined by GPS observations
 JV7122.and is referenced to NAD 83.
 JV7122
 JV7122. The following values were computed from the NAD 83(2011) position.
 JV7122
 JV7122;                    North         East     Units Scale Factor Converg.
 JV7122;SPC MD       -   162,899.758   382,466.657   MT  0.99995997   -0 07 38.2
 JV7122;SPC MD       -   534,446.96  1,254,809.36   sFT  0.99995997   -0 07 38.2
 JV7122;UTM  18      - 4,333,955.912   309,606.905   MT  1.00004636   -1 23 26.4
 JV7122
 JV7122!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7122!SPC MD       -   0.99998360  x   0.99995997  =   0.99994357
 JV7122!UTM  18      -   0.99998360  x   1.00004636  =   1.00002996
 JV7122
 JV7122_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0960633955(NAD 83)
 JV7122
 JV7122                          SUPERSEDED SURVEY CONTROL
 JV7122
 JV7122  NAD 83(2007)-  39 08 02.35122(N)    077 12 10.05602(W) AD(2002.00) 0
 JV7122  ELLIP H (02/10/07)  104.565  (m)                       GP(2002.00)    
 JV7122  ELLIP H (08/30/02)  104.583  (m)                       GP(       ) 4 2
 JV7122  NAD 83(1991)-  39 08 02.35059(N)    077 12 10.05622(W) AD(       ) 1
 JV7122  ELLIP H (01/11/94)  104.503  (m)                       GP(       ) 4 1
 JV7122
 JV7122.Superseded values are not recommended for survey control.
 JV7122
 JV7122.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7122.See file dsdata.pdf to determine how the superseded data were derived.
 JV7122
 JV7122_MARKER: DD = SURVEY DISK
 JV7122_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7122_STAMPING: T.S. 20330
 JV7122_MARK LOGO: WSSC
 JV7122_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7122_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7122+STABILITY: SURFACE MOTION
 JV7122_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7122+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2009
 JV7122
 JV7122  HISTORY     - Date     Condition        Report By
 JV7122  HISTORY     - 1993     MONUMENTED       MSI
 JV7122  HISTORY     - 20091215 GOOD             NGS
 JV7122
 JV7122                          STATION DESCRIPTION
 JV7122
 JV7122'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7122'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7122'4.7 MI (7.6 KM) NORTHWEST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7122'STATION FROM THE INTERSECTION OF SHADY GROVE ROAD AND FREDERICK ROAD
 JV7122'(S.R. 355), PROCEED NORTHWEST ON FREDERICK ROAD FOR 1.6 MI (2.6 KM)
 JV7122'TO THE INTERSECTION WITH CEDAR AVENUE.  TURN LEFT AND TRAVEL SOUTHWEST
 JV7122'ON CEDAR AVENUE FOR 0.5 MI (0.8 KM) TO THE STATION ON THE LEFT.
 JV7122'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7122'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7122'T.S. 20330 MC. THE DISK IS LOCATED 52.1 FT (15.9 M) SOUTHEAST OF A
 JV7122'FIRE HYDRANT, 64.1 FT (19.5 M) SOUTHWEST OF POWER POLE NO.
 JV7122'742473-4274, AND 6.8 FT (2.1 M) NORTHWEST OF THE EDGE OF THE PARKING
 JV7122'LOT.
 JV7122
 JV7122                          STATION RECOVERY (2009)
 JV7122
 JV7122'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV7122'MARK IS 6.55 M (21.5 FT) ESE OF THE CENTER OF THE DRIVEWAY INTO THE
 JV7122'PARKING LOT OF THE FIRST ASSEMBLY OF GOD CHURCH AND IS 2.44 M (8.0 FT)
 JV7122'SW OF THE FRONT FACE OF THE CURB TO CEDAR AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7123 ***********************************************************************
 JV7123  DESIGNATION -  20331
 JV7123  PID         -  JV7123
 JV7123  STATE/COUNTY-  MD/MONTGOMERY
 JV7123  COUNTRY     -  US
 JV7123  USGS QUAD   -  KENSINGTON (2016)
 JV7123
 JV7123                         *CURRENT SURVEY CONTROL
 JV7123  ______________________________________________________________________
 JV7123* NAD 83(2011) POSITION- 39 03 03.01728(N) 077 06 20.61325(W)   ADJUSTED
 JV7123* NAD 83(2011) ELLIP HT-    63.248 (meters)        (06/27/12)   ADJUSTED
 JV7123* NAD 83(2011) EPOCH   -  2010.00
 JV7123* NAVD 88 ORTHO HEIGHT -    95.1   (meters)      312.    (feet) GPS OBS
 JV7123  ______________________________________________________________________
 JV7123  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7123  GEOID HEIGHT    -        -32.170 (meters)                     GEOID93
 JV7123  GEOID HEIGHT    -        -31.804 (meters)                     GEOID18
 JV7123  NAD 83(2011) X  -  1,106,797.839 (meters)                     COMP
 JV7123  NAD 83(2011) Y  - -4,834,753.355 (meters)                     COMP
 JV7123  NAD 83(2011) Z  -  3,996,741.384 (meters)                     COMP
 JV7123  LAPLACE CORR    -         -3.41  (seconds)                    DEFLEC18
 JV7123
 JV7123  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7123  Standards:
 JV7123         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7123            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7123  -------------------------------------------------------------------
 JV7123  NETWORK    1.12   2.16           0.51   0.39   1.10     -0.09671649
 JV7123  -------------------------------------------------------------------
 JV7123  Click here for local accuracies and other accuracy information.
 JV7123
 JV7123.The horizontal coordinates were established by GPS observations
 JV7123.and adjusted by the National Geodetic Survey in June 2012.
 JV7123
 JV7123.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7123.been affixed to the stable North American tectonic plate. See 
 JV7123.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7123
 JV7123.The horizontal coordinates are valid at the epoch date displayed above
 JV7123.which is a decimal equivalence of Year/Month/Day.
 JV7123
 JV7123.The orthometric height was determined by GPS observations and a
 JV7123.high-resolution geoid model.
 JV7123
 JV7123.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7123.GEOID18 height accuracy estimate available here.
 JV7123
 JV7123.Click photographs - Photos may exist for this station.
 JV7123
 JV7123.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7123
 JV7123.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7123
 JV7123.The ellipsoidal height was determined by GPS observations
 JV7123.and is referenced to NAD 83.
 JV7123
 JV7123. The following values were computed from the NAD 83(2011) position.
 JV7123
 JV7123;                    North         East     Units Scale Factor Converg.
 JV7123;SPC MD       -   153,655.088   390,848.321   MT  0.99995450   -0 03 58.9
 JV7123;SPC MD       -   504,116.73  1,282,308.20   sFT  0.99995450   -0 03 58.9
 JV7123;UTM  18      - 4,324,528.221   317,783.505   MT  1.00000885   -1 19 37.2
 JV7123
 JV7123!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7123!SPC MD       -   0.99999008  x   0.99995450  =   0.99994458
 JV7123!UTM  18      -   0.99999008  x   1.00000885  =   0.99999893
 JV7123
 JV7123_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1778324528(NAD 83)
 JV7123
 JV7123                          SUPERSEDED SURVEY CONTROL
 JV7123
 JV7123  NAD 83(2007)-  39 03 03.01748(N)    077 06 20.61403(W) AD(2002.00) 0
 JV7123  ELLIP H (02/10/07)   63.277  (m)                       GP(2002.00)    
 JV7123  ELLIP H (08/30/02)   63.293  (m)                       GP(       ) 4 2
 JV7123  NAD 83(1991)-  39 03 03.01701(N)    077 06 20.61431(W) AD(       ) 1
 JV7123  ELLIP H (01/11/94)   63.208  (m)                       GP(       ) 4 1
 JV7123
 JV7123.Superseded values are not recommended for survey control.
 JV7123
 JV7123.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7123.See file dsdata.pdf to determine how the superseded data were derived.
 JV7123
 JV7123_MARKER: DD = SURVEY DISK
 JV7123_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7123_STAMPING: T.S. 20331 MC
 JV7123_MARK LOGO: WSSC
 JV7123_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7123_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7123+STABILITY: SURFACE MOTION
 JV7123_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7123+SATELLITE: SATELLITE OBSERVATIONS - October 21, 2009
 JV7123
 JV7123  HISTORY     - Date     Condition        Report By
 JV7123  HISTORY     - 1993     MONUMENTED       MSI
 JV7123  HISTORY     - 20021202 GOOD             POWELL
 JV7123  HISTORY     - 20050407 GOOD             USPSQD
 JV7123  HISTORY     - 20060618 GOOD             NGS
 JV7123  HISTORY     - 20091021 GOOD             INDIV
 JV7123
 JV7123                          STATION DESCRIPTION
 JV7123
 JV7123'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7123'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7123'3.1 MI (5.0 KM) SOUTHEAST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7123'STATION FROM THE INTERSECTION OF ROCKVILLE PIKE (S.R. 355) AND
 JV7123'RANDOLPH ROAD, PROCEED EAST ON RANDOLPH ROAD FOR 0.5 MI (0.8 KM) TO
 JV7123'THE INTERSECTION WITH PARKLAWN DRIVE.  TURN RIGHT AND TRAVEL SOUTH ON
 JV7123'PARKLAWN DRIVE FOR 0.2 MI (0.3 KM) TO THE STATION ON THE RIGHT.
 JV7123'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7123'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7123'T.S. 20331 MC. THE DISK IS LOCATED 46.4 FT (14.1 M) SOUTH-SOUTHWEST
 JV7123'OF THE CENTER LINE OF PARKLAWN DRIVE, 50.3 FT (15.3 M) WEST OF POWER
 JV7123'POLE NO. 769443-9537, AND 107.0 FT (32.6 M) EAST OF THE SOUTHWEST
 JV7123'CORNER OF LEXINGTON BUILDING NO. 11900.
 JV7123
 JV7123                          STATION RECOVERY (2002)
 JV7123
 JV7123'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7123'RECOVERED IN GOOD CONDITION.
 JV7123
 JV7123                          STATION RECOVERY (2005)
 JV7123
 JV7123'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7123'RECOVERED IN GOOD CONDITION.
 JV7123
 JV7123                          STATION RECOVERY (2006)
 JV7123
 JV7123'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV7123'RECOVERED IN GOOD CONDITION.
 JV7123
 JV7123                          STATION RECOVERY (2009)
 JV7123
 JV7123'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2009 (WRA)
 JV7123'DESCRIPTION IS ADEQUATE
 JV7123'USED FOR GPS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7124 ***********************************************************************
 JV7124  DESIGNATION -  20332
 JV7124  PID         -  JV7124
 JV7124  STATE/COUNTY-  MD/MONTGOMERY
 JV7124  COUNTRY     -  US
 JV7124  USGS QUAD   -  GAITHERSBURG (2016)
 JV7124
 JV7124                         *CURRENT SURVEY CONTROL
 JV7124  ______________________________________________________________________
 JV7124* NAD 83(2011) POSITION- 39 07 54.56389(N) 077 10 44.27994(W)   ADJUSTED
 JV7124* NAD 83(2011) ELLIP HT-   118.238 (meters)        (06/27/12)   ADJUSTED
 JV7124* NAD 83(2011) EPOCH   -  2010.00
 JV7124* NAVD 88 ORTHO HEIGHT -   150.0   (meters)      492.    (feet) GPS OBS
 JV7124  ______________________________________________________________________
 JV7124  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7124  GEOID HEIGHT    -        -32.090 (meters)                     GEOID93
 JV7124  GEOID HEIGHT    -        -31.724 (meters)                     GEOID18
 JV7124  NAD 83(2011) X  -  1,099,368.132 (meters)                     COMP
 JV7124  NAD 83(2011) Y  - -4,830,677.905 (meters)                     COMP
 JV7124  NAD 83(2011) Z  -  4,003,754.254 (meters)                     COMP
 JV7124  LAPLACE CORR    -          0.19  (seconds)                    DEFLEC18
 JV7124
 JV7124  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7124  Standards:
 JV7124         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7124            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7124  -------------------------------------------------------------------
 JV7124  NETWORK    1.08   2.37           0.44   0.44   1.21      0.02019943
 JV7124  -------------------------------------------------------------------
 JV7124  Click here for local accuracies and other accuracy information.
 JV7124
 JV7124.The horizontal coordinates were established by GPS observations
 JV7124.and adjusted by the National Geodetic Survey in June 2012.
 JV7124
 JV7124.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7124.been affixed to the stable North American tectonic plate. See 
 JV7124.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7124
 JV7124.The horizontal coordinates are valid at the epoch date displayed above
 JV7124.which is a decimal equivalence of Year/Month/Day.
 JV7124
 JV7124.The orthometric height was determined by GPS observations and a
 JV7124.high-resolution geoid model.
 JV7124
 JV7124.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7124.GEOID18 height accuracy estimate available here.
 JV7124
 JV7124.Click photographs - Photos may exist for this station.
 JV7124
 JV7124.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7124
 JV7124.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7124
 JV7124.The ellipsoidal height was determined by GPS observations
 JV7124.and is referenced to NAD 83.
 JV7124
 JV7124. The following values were computed from the NAD 83(2011) position.
 JV7124
 JV7124;                    North         East     Units Scale Factor Converg.
 JV7124;SPC MD       -   162,655.319   384,526.203   MT  0.99995980   -0 06 44.4
 JV7124;SPC MD       -   533,644.99  1,261,566.38   sFT  0.99995980   -0 06 44.4
 JV7124;UTM  18      - 4,333,666.100   311,660.729   MT  1.00003678   -1 22 32.0
 JV7124
 JV7124!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7124!SPC MD       -   0.99998145  x   0.99995980  =   0.99994125
 JV7124!UTM  18      -   0.99998145  x   1.00003678  =   1.00001823
 JV7124
 JV7124_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1166033666(NAD 83)
 JV7124
 JV7124                          SUPERSEDED SURVEY CONTROL
 JV7124
 JV7124  NAD 83(2007)-  39 07 54.56408(N)    077 10 44.28071(W) AD(2002.00) 0
 JV7124  ELLIP H (02/10/07)  118.262  (m)                       GP(2002.00)    
 JV7124  ELLIP H (08/30/02)  118.284  (m)                       GP(       ) 4 2
 JV7124  NAD 83(1991)-  39 07 54.56345(N)    077 10 44.28089(W) AD(       ) 1
 JV7124  ELLIP H (01/11/94)  118.199  (m)                       GP(       ) 4 1
 JV7124
 JV7124.Superseded values are not recommended for survey control.
 JV7124
 JV7124.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7124.See file dsdata.pdf to determine how the superseded data were derived.
 JV7124
 JV7124_MARKER: DD = SURVEY DISK
 JV7124_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7124_STAMPING: T.S. 20332 MC
 JV7124_MARK LOGO: WSSC
 JV7124_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7124_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7124+STABILITY: SURFACE MOTION
 JV7124_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7124+SATELLITE: SATELLITE OBSERVATIONS - October 22, 2009
 JV7124
 JV7124  HISTORY     - Date     Condition        Report By
 JV7124  HISTORY     - 1993     MONUMENTED       MSI
 JV7124  HISTORY     - 19970906 GOOD             DMW
 JV7124  HISTORY     - 20041204 GOOD             GEOCAC
 JV7124  HISTORY     - 20091022 GOOD             NGS
 JV7124
 JV7124                          STATION DESCRIPTION
 JV7124
 JV7124'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7124'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7124'3.8 MI (6.1 KM) NORTHWEST OF THE CITY OF ROCKVILE.  TO REACH THE
 JV7124'STATION FROM THE INTERSECTION OF FREDERICK ROAD (S.R. 355) AND SHADY
 JV7124'GROVE ROAD, PROCEED NORTH ON FREDERICK ROAD FOR 0.6 MI (1.0 KM) TO
 JV7124'THE INTERSECTION WITH WESTLAND DRIVE NORTH.  TURN RIGHT AND TRAVEL
 JV7124'EAST ON WESTLAND DRIVE NORTH FOR 0.4 MI (0.6 KM) TO THE INTERSECTION
 JV7124'WITH CHESTNUT STREET, AND THE STATION ON EAST SIDE OF CHESTNUT
 JV7124'STREET.
 JV7124'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7124'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7124'T.S. 20332 MC. THE DISK IS LOCATED 27.5 FT (8.4 M) NORTHEAST OF THE
 JV7124'CENTER LINE OF CHESTNUT STREET, 3.5 FT (1.1 M) SOUTHWEST OF A FENCE
 JV7124'LINE, AND 61.4 FT (18.7 M) SOUTHEAST OF A MANHOLE ON EAST SIDE OF
 JV7124'CHESTNUT STREET.
 JV7124
 JV7124                          STATION RECOVERY (1997)
 JV7124
 JV7124'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV7124'RECOVERED AS DESCRIBED.
 JV7124
 JV7124                          STATION RECOVERY (2004)
 JV7124
 JV7124'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV7124'LOCATED AT THE INTERSECTION OF NORTH WESTLAND DRIVE AND CHESTNUT
 JV7124'STREET, APPROXIMATELY 3.5 FEET WEST OF A GRAY CARSONITE WITNESS POST
 JV7124'AND APPPROXIMAELY 11.2 FEET SOUTHEAST OF A 'NO PARKING' SIGN.
 JV7124
 JV7124                          STATION RECOVERY (2009)
 JV7124
 JV7124'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV7124'WITNESS POST IS GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7125 ***********************************************************************
 JV7125  DESIGNATION -  20333
 JV7125  PID         -  JV7125
 JV7125  STATE/COUNTY-  MD/MONTGOMERY
 JV7125  COUNTRY     -  US
 JV7125  USGS QUAD   -  GAITHERSBURG (2016)
 JV7125
 JV7125                         *CURRENT SURVEY CONTROL
 JV7125  ______________________________________________________________________
 JV7125* NAD 83(2011) POSITION- 39 10 36.67343(N) 077 10 44.31522(W)   ADJUSTED
 JV7125* NAD 83(2011) ELLIP HT-   113.436 (meters)        (06/27/12)   ADJUSTED
 JV7125* NAD 83(2011) EPOCH   -  2010.00
 JV7125* NAVD 88 ORTHO HEIGHT -   145.2   (meters)      476.    (feet) GPS OBS
 JV7125  ______________________________________________________________________
 JV7125  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7125  GEOID HEIGHT    -        -32.120 (meters)                     GEOID93
 JV7125  GEOID HEIGHT    -        -31.755 (meters)                     GEOID18
 JV7125  NAD 83(2011) X  -  1,098,666.007 (meters)                     COMP
 JV7125  NAD 83(2011) Y  - -4,827,596.549 (meters)                     COMP
 JV7125  NAD 83(2011) Z  -  4,007,627.917 (meters)                     COMP
 JV7125  LAPLACE CORR    -          0.93  (seconds)                    DEFLEC18
 JV7125
 JV7125  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7125  Standards:
 JV7125         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7125            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7125  -------------------------------------------------------------------
 JV7125  NETWORK    1.27   2.59           0.53   0.51   1.32     -0.10634560
 JV7125  -------------------------------------------------------------------
 JV7125  Click here for local accuracies and other accuracy information.
 JV7125
 JV7125.The horizontal coordinates were established by GPS observations
 JV7125.and adjusted by the National Geodetic Survey in June 2012.
 JV7125
 JV7125.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7125.been affixed to the stable North American tectonic plate. See 
 JV7125.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7125
 JV7125.The horizontal coordinates are valid at the epoch date displayed above
 JV7125.which is a decimal equivalence of Year/Month/Day.
 JV7125
 JV7125.The orthometric height was determined by GPS observations and a
 JV7125.high-resolution geoid model.
 JV7125
 JV7125.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7125.GEOID18 height accuracy estimate available here.
 JV7125
 JV7125.Click photographs - Photos may exist for this station.
 JV7125
 JV7125.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7125
 JV7125.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7125
 JV7125.The ellipsoidal height was determined by GPS observations
 JV7125.and is referenced to NAD 83.
 JV7125
 JV7125. The following values were computed from the NAD 83(2011) position.
 JV7125
 JV7125;                    North         East     Units Scale Factor Converg.
 JV7125;SPC MD       -   167,654.326   384,535.156   MT  0.99996362   -0 06 44.4
 JV7125;SPC MD       -   550,045.90  1,261,595.76   sFT  0.99996362   -0 06 44.4
 JV7125;UTM  18      - 4,338,664.068   311,779.955   MT  1.00003623   -1 22 36.8
 JV7125
 JV7125!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7125!SPC MD       -   0.99998220  x   0.99996362  =   0.99994582
 JV7125!UTM  18      -   0.99998220  x   1.00003623  =   1.00001843
 JV7125
 JV7125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1177938664(NAD 83)
 JV7125
 JV7125                          SUPERSEDED SURVEY CONTROL
 JV7125
 JV7125  NAD 83(2007)-  39 10 36.67364(N)    077 10 44.31596(W) AD(2002.00) 0
 JV7125  ELLIP H (02/10/07)  113.465  (m)                       GP(2002.00)    
 JV7125  ELLIP H (08/30/02)  113.453  (m)                       GP(       ) 4 2
 JV7125  NAD 83(1991)-  39 10 36.67285(N)    077 10 44.31608(W) AD(       ) 1
 JV7125  ELLIP H (01/11/94)  113.415  (m)                       GP(       ) 4 1
 JV7125
 JV7125.Superseded values are not recommended for survey control.
 JV7125
 JV7125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7125.See file dsdata.pdf to determine how the superseded data were derived.
 JV7125
 JV7125_MARKER: DD = SURVEY DISK
 JV7125_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7125_STAMPING: T.S. 20333 MC
 JV7125_MARK LOGO: WSSC
 JV7125_PROJECTION: FLUSH
 JV7125_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7125_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7125+STABILITY: SURFACE MOTION
 JV7125_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7125+SATELLITE: SATELLITE OBSERVATIONS - October 23, 2018
 JV7125
 JV7125  HISTORY     - Date     Condition        Report By
 JV7125  HISTORY     - 1993     MONUMENTED       MSI
 JV7125  HISTORY     - 20050106 GOOD             URS
 JV7125  HISTORY     - 20090512 GOOD             JMTMD
 JV7125  HISTORY     - 20130928 GOOD             BASE9
 JV7125  HISTORY     - 20181023 GOOD             GPI
 JV7125
 JV7125                          STATION DESCRIPTION
 JV7125
 JV7125'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7125'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7125'3.0 MI (4.8 KM) SOUTHWEST OF THE TOWN OF LAYTONSVILLE.  TO REACH THE
 JV7125'STATION FROM THE INTERSECTION OF MIDCOUNTY HIGHWAY AND GOSHEN ROAD,
 JV7125'PROCEED NORTH ON GOSHEN ROAD FOR 2.1 MI (3.4 KM) TO THE INTERSECTION
 JV7125'WITH SNOUFFER SCHOOL ROAD.  TURN RIGHT AND TRAVEL SOUTHEAST ON
 JV7125'SNOUFFER SCHOOL ROAD FOR 0.9 MI (1.4 KM) TO THE STATION ON THE LEFT.
 JV7125'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7125'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7125'T.S. 20333 MC. THE DISK IS LOCATED 27.3 FT (8.3 M) EAST OF THE
 JV7125'CENTER LINE OF SNOUFFER SCHOOL ROAD, 98.4 FT (30.0 M) SOUTH OF PEPCO
 JV7125'POWER POLE NO. 749489-1439, AND 138.0 FT (42.1 M) NORTH OF PEPCO
 JV7125'POWER POLE NO. 749489-1716.
 JV7125
 JV7125                          STATION RECOVERY (2005)
 JV7125
 JV7125'RECOVERY NOTE BY URS COMPANY 2005 (JP)
 JV7125'RECOVERED IN GOOD CONDITION.
 JV7125
 JV7125                          STATION RECOVERY (2009)
 JV7125
 JV7125'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 JV7125'GOOD SITE FOR GPS (X,Y,Z, NOT CHECKED)
 JV7125
 JV7125                          STATION RECOVERY (2013)
 JV7125
 JV7125'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV7125'THE MARK IS 15.2 M (49.9 FT) NORTH OF THE APPROXIMATE CENTERLINE OF
 JV7125'THE EXTENSION OF ALLISTON HOLLOW WAY AND THE POSSIBLE FUTURE ENTRANCE
 JV7125'TO THE CENTERPARK BUSINESS PARK WHICH IS UNDER CONSTRUCTION.
 JV7125
 JV7125                          STATION RECOVERY (2018)
 JV7125
 JV7125'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2018 (LJB)
 JV7125'RECOVERED AS DESCRIBED.  THE MARK MAY BE ENDANGERED DUE TO ROAD
 JV7125'WIDENING ALONG SNOUFFER SCHOOL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7126 ***********************************************************************
 JV7126  DESIGNATION -  20334
 JV7126  PID         -  JV7126
 JV7126  STATE/COUNTY-  MD/MONTGOMERY
 JV7126  COUNTRY     -  US
 JV7126  USGS QUAD   -  GAITHERSBURG (2016)
 JV7126
 JV7126                         *CURRENT SURVEY CONTROL
 JV7126  ______________________________________________________________________
 JV7126* NAD 83(2011) POSITION- 39 07 59.44611(N) 077 09 05.33041(W)   ADJUSTED
 JV7126* NAD 83(2011) ELLIP HT-    88.813 (meters)        (06/27/12)   ADJUSTED
 JV7126* NAD 83(2011) EPOCH   -  2010.00
 JV7126* NAVD 88 ORTHO HEIGHT -   120.6   (meters)      396.    (feet) GPS OBS
 JV7126  ______________________________________________________________________
 JV7126  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7126  GEOID HEIGHT    -        -32.100 (meters)                     GEOID93
 JV7126  GEOID HEIGHT    -        -31.731 (meters)                     GEOID18
 JV7126  NAD 83(2011) X  -  1,101,659.176 (meters)                     COMP
 JV7126  NAD 83(2011) Y  - -4,830,035.064 (meters)                     COMP
 JV7126  NAD 83(2011) Z  -  4,003,852.472 (meters)                     COMP
 JV7126  LAPLACE CORR    -         -1.11  (seconds)                    DEFLEC18
 JV7126
 JV7126  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7126  Standards:
 JV7126         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7126            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7126  -------------------------------------------------------------------
 JV7126  NETWORK    1.11   2.51           0.46   0.45   1.28     -0.06949799
 JV7126  -------------------------------------------------------------------
 JV7126  Click here for local accuracies and other accuracy information.
 JV7126
 JV7126.The horizontal coordinates were established by GPS observations
 JV7126.and adjusted by the National Geodetic Survey in June 2012.
 JV7126
 JV7126.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7126.been affixed to the stable North American tectonic plate. See 
 JV7126.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7126
 JV7126.The horizontal coordinates are valid at the epoch date displayed above
 JV7126.which is a decimal equivalence of Year/Month/Day.
 JV7126
 JV7126.The orthometric height was determined by GPS observations and a
 JV7126.high-resolution geoid model.
 JV7126
 JV7126.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7126.GEOID18 height accuracy estimate available here.
 JV7126
 JV7126.Click photographs - Photos may exist for this station.
 JV7126
 JV7126.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7126
 JV7126.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7126
 JV7126.The ellipsoidal height was determined by GPS observations
 JV7126.and is referenced to NAD 83.
 JV7126
 JV7126. The following values were computed from the NAD 83(2011) position.
 JV7126
 JV7126;                    North         East     Units Scale Factor Converg.
 JV7126;SPC MD       -   162,801.571   386,902.941   MT  0.99995991   -0 05 42.3
 JV7126;SPC MD       -   534,124.82  1,269,364.07   sFT  0.99995991   -0 05 42.3
 JV7126;UTM  18      - 4,333,759.928   314,040.283   MT  1.00002582   -1 21 29.7
 JV7126
 JV7126!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7126!SPC MD       -   0.99998607  x   0.99995991  =   0.99994598
 JV7126!UTM  18      -   0.99998607  x   1.00002582  =   1.00001189
 JV7126
 JV7126_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1404033759(NAD 83)
 JV7126
 JV7126                          SUPERSEDED SURVEY CONTROL
 JV7126
 JV7126  NAD 83(2007)-  39 07 59.44628(N)    077 09 05.33118(W) AD(2002.00) 0
 JV7126  ELLIP H (02/10/07)   88.841  (m)                       GP(2002.00)    
 JV7126  ELLIP H (08/30/02)   88.850  (m)                       GP(       ) 4 2
 JV7126  NAD 83(1991)-  39 07 59.44557(N)    077 09 05.33115(W) AD(       ) 1
 JV7126  ELLIP H (01/11/94)   88.781  (m)                       GP(       ) 4 1
 JV7126
 JV7126.Superseded values are not recommended for survey control.
 JV7126
 JV7126.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7126.See file dsdata.pdf to determine how the superseded data were derived.
 JV7126
 JV7126_MARKER: DD = SURVEY DISK
 JV7126_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7126_STAMPING: T.S. 20334 MC
 JV7126_MARK LOGO: WSSC
 JV7126_PROJECTION: FLUSH
 JV7126_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7126_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7126+STABILITY: SURFACE MOTION
 JV7126_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7126+SATELLITE: SATELLITE OBSERVATIONS - March 08, 2022
 JV7126
 JV7126  HISTORY     - Date     Condition        Report By
 JV7126  HISTORY     - 1993     MONUMENTED       MSI
 JV7126  HISTORY     - 20021017 GOOD             POWELL
 JV7126  HISTORY     - 20050407 GOOD             USPSQD
 JV7126  HISTORY     - 20091022 GOOD             NGS
 JV7126  HISTORY     - 20220308 GOOD             NGS
 JV7126
 JV7126                          STATION DESCRIPTION
 JV7126
 JV7126'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7126'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7126'3.4 MI (5.5 KM) NORTH OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7126'FROM THE INTERSECTION OF FREDERICK ROAD (S.R. 355) AND SHADY GROVE
 JV7126'ROAD, PROCEED NORTHEAST ALONG SHADY GROVE ROAD FOR 1.3 MI (2.1 KM) TO
 JV7126'THE INTERSECTION WITH BRIARDALE ROAD.  TURN RIGHT AND TRAVEL EAST ON
 JV7126'BRIARDALE ROAD FOR 0.2 MI (0.3 KM) TO THE INTERSECTION WITH
 JV7126'BAEDERWOOD LANE. TURN LEFT AND TRAVEL NORTHEAST ON BAEDERWOOD LANE
 JV7126'FOR 0.2 MI (0.3 KM) TO THE INTERSECTION WITH BETHAYRES COURT, AND THE
 JV7126'STATION ON RIGHT.
 JV7126'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7126'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7126'T.S. 20334 MC. THE DISK IS LOCATED 15.0 FT (4.6 M) SOUTHEAST OF THE
 JV7126'CENTER LINE OF BETHAYRES COURT, 73.5 FT (22.4 M) SOUTHWEST OF THE
 JV7126'CENTER LINE OF BAEDERWOOD LANE, AND 62.5 FT (19.1 M) SOUTH OF THE
 JV7126'CENTER OF A STORM DRAIN.
 JV7126
 JV7126                          STATION RECOVERY (2002)
 JV7126
 JV7126'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7126'RECOVERED IN GOOD CONDITION.
 JV7126
 JV7126                          STATION RECOVERY (2005)
 JV7126
 JV7126'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7126'RECOVERED IN GOOD CONDITION.
 JV7126
 JV7126                          STATION RECOVERY (2009)
 JV7126
 JV7126'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV7126'GPS OBSERVATIONS AT THIS STATION MAY BE INHIBITED BY TREES.
 JV7126
 JV7126                          STATION RECOVERY (2022)
 JV7126
 JV7126'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (KA)
 JV7126'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7128 ***********************************************************************
 JV7128  DESIGNATION -  20336
 JV7128  PID         -  JV7128
 JV7128  STATE/COUNTY-  MD/MONTGOMERY
 JV7128  COUNTRY     -  US
 JV7128  USGS QUAD   -  GAITHERSBURG (2016)
 JV7128
 JV7128                         *CURRENT SURVEY CONTROL
 JV7128  ______________________________________________________________________
 JV7128* NAD 83(2011) POSITION- 39 07 42.08724(N) 077 07 44.62440(W)   ADJUSTED
 JV7128* NAD 83(2011) ELLIP HT-    73.533 (meters)        (06/27/12)   ADJUSTED
 JV7128* NAD 83(2011) EPOCH   -  2010.00
 JV7128* NAVD 88 ORTHO HEIGHT -   105.3   (meters)      345.    (feet) GPS OBS
 JV7128  ______________________________________________________________________
 JV7128  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7128  GEOID HEIGHT    -        -32.110 (meters)                     GEOID93
 JV7128  GEOID HEIGHT    -        -31.747 (meters)                     GEOID18
 JV7128  NAD 83(2011) X  -  1,103,621.573 (meters)                     COMP
 JV7128  NAD 83(2011) Y  - -4,829,921.440 (meters)                     COMP
 JV7128  NAD 83(2011) Z  -  4,003,427.573 (meters)                     COMP
 JV7128  LAPLACE CORR    -         -1.72  (seconds)                    DEFLEC18
 JV7128
 JV7128  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7128  Standards:
 JV7128         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7128            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7128  -------------------------------------------------------------------
 JV7128  NETWORK    1.17   2.49           0.49   0.46   1.27     -0.19081864
 JV7128  -------------------------------------------------------------------
 JV7128  Click here for local accuracies and other accuracy information.
 JV7128
 JV7128.The horizontal coordinates were established by GPS observations
 JV7128.and adjusted by the National Geodetic Survey in June 2012.
 JV7128
 JV7128.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7128.been affixed to the stable North American tectonic plate. See 
 JV7128.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7128
 JV7128.The horizontal coordinates are valid at the epoch date displayed above
 JV7128.which is a decimal equivalence of Year/Month/Day.
 JV7128
 JV7128.The orthometric height was determined by GPS observations and a
 JV7128.high-resolution geoid model.
 JV7128
 JV7128.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7128.GEOID18 height accuracy estimate available here.
 JV7128
 JV7128.Click photographs - Photos may exist for this station.
 JV7128
 JV7128.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7128
 JV7128.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7128
 JV7128.The ellipsoidal height was determined by GPS observations
 JV7128.and is referenced to NAD 83.
 JV7128
 JV7128. The following values were computed from the NAD 83(2011) position.
 JV7128
 JV7128;                    North         East     Units Scale Factor Converg.
 JV7128;SPC MD       -   162,263.296   388,840.478   MT  0.99995954   -0 04 51.6
 JV7128;SPC MD       -   532,358.83  1,275,720.80   sFT  0.99995954   -0 04 51.6
 JV7128;UTM  18      - 4,333,179.040   315,965.603   MT  1.00001704   -1 20 38.2
 JV7128
 JV7128!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7128!SPC MD       -   0.99998846  x   0.99995954  =   0.99994800
 JV7128!UTM  18      -   0.99998846  x   1.00001704  =   1.00000550
 JV7128
 JV7128_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1596533179(NAD 83)
 JV7128
 JV7128                          SUPERSEDED SURVEY CONTROL
 JV7128
 JV7128  NAD 83(2007)-  39 07 42.08739(N)    077 07 44.62518(W) AD(2002.00) 0
 JV7128  ELLIP H (02/10/07)   73.559  (m)                       GP(2002.00)    
 JV7128  ELLIP H (08/30/02)   73.583  (m)                       GP(       ) 4 2
 JV7128  NAD 83(1991)-  39 07 42.08671(N)    077 07 44.62516(W) AD(       ) 1
 JV7128  ELLIP H (01/11/94)   73.494  (m)                       GP(       ) 4 1
 JV7128
 JV7128.Superseded values are not recommended for survey control.
 JV7128
 JV7128.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7128.See file dsdata.pdf to determine how the superseded data were derived.
 JV7128
 JV7128_MARKER: DD = SURVEY DISK
 JV7128_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7128_STAMPING: T.S. 20336 MC
 JV7128_MARK LOGO: WSSC
 JV7128_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7128_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7128+STABILITY: SURFACE MOTION
 JV7128_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7128+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2009
 JV7128
 JV7128  HISTORY     - Date     Condition        Report By
 JV7128  HISTORY     - 1993     MONUMENTED       MSI
 JV7128  HISTORY     - 20021017 GOOD             POWELL
 JV7128  HISTORY     - 20050405 GOOD             USPSQD
 JV7128  HISTORY     - 20091215 GOOD             NGS
 JV7128
 JV7128                          STATION DESCRIPTION
 JV7128
 JV7128'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7128'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7128'3.2 MI (5.1 KM) NORTH OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7128'FROM THE INTERSECTION OF NORBECK ROAD (S.R. 28) AND MUNCASTER MILL
 JV7128'ROAD (S.R. 115), PROCEED NORTHWEST ON MUNCASTER MILL ROAD FOR 3.0 MI
 JV7128'(4.8 KM) TO THE INTERSECTION WITH NEEDWOOD ROAD.  TURN LEFT AND
 JV7128'TRAVEL SOUTHWEST ON NEEDWOOD ROAD FOR 0.5 MI (0.8 KM) TO THE STATION
 JV7128'ON THE RIGHT.
 JV7128'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7128'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7128'T.S. 20336 MC. THE DISK IS LOCATED 93.3 FT (28.4 M) NORTH-NORTHEAST
 JV7128'OF THE CENTER OF A GATEWAY, 61.0 FT (18.6 M) SOUTHWEST OF POWER POLE
 JV7128'NO. 763471-416, 38.5 FT (11.7 M) NORTHWEST OF THE CENTERLINE OF
 JV7128'NEEDWOOD ROAD.
 JV7128
 JV7128                          STATION RECOVERY (2002)
 JV7128
 JV7128'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7128'RECOVERED IN GOOD CONDITION.
 JV7128
 JV7128                          STATION RECOVERY (2005)
 JV7128
 JV7128'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7128'RECOVERED IN GOOD CONDITION.
 JV7128
 JV7128                          STATION RECOVERY (2009)
 JV7128
 JV7128'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV7128'MARK IS 4.75 M (15.6 FT) WNW OF THE MOST NORTHERLY OF 7 GUARDRAIL
 JV7128'SUPPORT POSTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7129 ***********************************************************************
 JV7129  DESIGNATION -  20337
 JV7129  PID         -  JV7129
 JV7129  STATE/COUNTY-  MD/MONTGOMERY
 JV7129  COUNTRY     -  US
 JV7129  USGS QUAD   -  GAITHERSBURG (2016)
 JV7129
 JV7129                         *CURRENT SURVEY CONTROL
 JV7129  ______________________________________________________________________
 JV7129* NAD 83(2011) POSITION- 39 10 33.92101(N) 077 07 47.50937(W)   ADJUSTED
 JV7129* NAD 83(2011) ELLIP HT-   114.582 (meters)        (06/27/12)   ADJUSTED
 JV7129* NAD 83(2011) EPOCH   -  2010.00
 JV7129* NAVD 88 ORTHO HEIGHT -   146.3   (meters)      480.    (feet) GPS OBS
 JV7129  ______________________________________________________________________
 JV7129  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7129  GEOID HEIGHT    -        -32.110 (meters)                     GEOID93
 JV7129  GEOID HEIGHT    -        -31.757 (meters)                     GEOID18
 JV7129  NAD 83(2011) X  -  1,102,815.858 (meters)                     COMP
 JV7129  NAD 83(2011) Y  - -4,826,706.162 (meters)                     COMP
 JV7129  NAD 83(2011) Z  -  4,007,562.840 (meters)                     COMP
 JV7129  LAPLACE CORR    -         -1.03  (seconds)                    DEFLEC18
 JV7129
 JV7129  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7129  Standards:
 JV7129         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7129            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7129  -------------------------------------------------------------------
 JV7129  NETWORK    1.30   2.65           0.56   0.50   1.35     -0.02931220
 JV7129  -------------------------------------------------------------------
 JV7129  Click here for local accuracies and other accuracy information.
 JV7129
 JV7129.The horizontal coordinates were established by GPS observations
 JV7129.and adjusted by the National Geodetic Survey in June 2012.
 JV7129
 JV7129.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7129.been affixed to the stable North American tectonic plate. See 
 JV7129.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7129
 JV7129.The horizontal coordinates are valid at the epoch date displayed above
 JV7129.which is a decimal equivalence of Year/Month/Day.
 JV7129
 JV7129.The orthometric height was determined by GPS observations and a
 JV7129.high-resolution geoid model.
 JV7129
 JV7129.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7129.GEOID18 height accuracy estimate available here.
 JV7129
 JV7129.Click photographs - Photos may exist for this station.
 JV7129
 JV7129.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7129
 JV7129.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7129
 JV7129.The ellipsoidal height was determined by GPS observations
 JV7129.and is referenced to NAD 83.
 JV7129
 JV7129. The following values were computed from the NAD 83(2011) position.
 JV7129
 JV7129;                    North         East     Units Scale Factor Converg.
 JV7129;SPC MD       -   167,562.270   388,778.723   MT  0.99996355   -0 04 53.4
 JV7129;SPC MD       -   549,743.88  1,275,518.19   sFT  0.99996355   -0 04 53.4
 JV7129;UTM  18      - 4,338,478.381   316,020.724   MT  1.00001679   -1 20 45.0
 JV7129
 JV7129!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7129!SPC MD       -   0.99998202  x   0.99996355  =   0.99994557
 JV7129!UTM  18      -   0.99998202  x   1.00001679  =   0.99999881
 JV7129
 JV7129_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1602038478(NAD 83)
 JV7129
 JV7129                          SUPERSEDED SURVEY CONTROL
 JV7129
 JV7129  NAD 83(2007)-  39 10 33.92116(N)    077 07 47.51016(W) AD(2002.00) 0
 JV7129  ELLIP H (02/10/07)  114.613  (m)                       GP(2002.00)    
 JV7129  ELLIP H (08/30/02)  114.614  (m)                       GP(       ) 4 2
 JV7129  NAD 83(1991)-  39 10 33.92042(N)    077 07 47.51004(W) AD(       ) 1
 JV7129  ELLIP H (01/11/94)  114.556  (m)                       GP(       ) 4 1
 JV7129
 JV7129.Superseded values are not recommended for survey control.
 JV7129
 JV7129.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7129.See file dsdata.pdf to determine how the superseded data were derived.
 JV7129
 JV7129_MARKER: DD = SURVEY DISK
 JV7129_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7129_STAMPING: T.S. 20337 MC
 JV7129_MARK LOGO: WSSC
 JV7129_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7129_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7129+STABILITY: SURFACE MOTION
 JV7129_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7129+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7129
 JV7129  HISTORY     - Date     Condition        Report By
 JV7129  HISTORY     - 1993     MONUMENTED       MSI
 JV7129
 JV7129                          STATION DESCRIPTION
 JV7129
 JV7129'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7129'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7129'2.2 MI (3.5 KM) SOUTH OF THE TOWN OF LAYTONSVILLE.  TO REACH THE
 JV7129'STATION FROM THE INTERSECTION OF FIELDCREST ROAD AND
 JV7129'OLNEY-LAYTONSVILLE ROAD (S.R. 108), PROCEED SOUTHEAST ON
 JV7129'OLNEY-LAYTONSVILLE ROAD FOR 0.6 MI (1.0 KM) TO THE INTERSECTION WITH
 JV7129'MUNCASTER ROAD.  TURN RIGHT AND TRAVEL SOUTH ON MUNCASTER ROAD FOR
 JV7129'0.6 MI (1.0 KM) TO THE INTERSECTION WITH A DIRT ROAD TO THE RIGHT.
 JV7129'TURN RIGHT AND TRAVEL WEST ON THE DIRT ROAD FOR 0.7 MI (1.1 KM) TO
 JV7129'THE INTERSECTION WITH A DIRT ROAD ON THE LEFT, AND THE STATION ON THE
 JV7129'LEFT.
 JV7129'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7129'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7129'T.S. 20337 MC. THE DISK IS LOCATED 0.55 M (1.80 FT) EAST OF A
 JV7129'WITNESS POST, 3.8 M (12.5 FT) WEST OF THE CENTER LINE OF THE MAIN
 JV7129'DIRT ROAD, AND 9.6 M (31.5 FT) NORTHEAST OF A POWER POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7130 ***********************************************************************
 JV7130  DESIGNATION -  20338
 JV7130  PID         -  JV7130
 JV7130  STATE/COUNTY-  MD/MONTGOMERY
 JV7130  COUNTRY     -  US
 JV7130  USGS QUAD   -  KENSINGTON (2016)
 JV7130
 JV7130                         *CURRENT SURVEY CONTROL
 JV7130  ______________________________________________________________________
 JV7130* NAD 83(2011) POSITION- 39 00 43.62212(N) 077 06 20.97487(W)   ADJUSTED
 JV7130* NAD 83(2011) ELLIP HT-    56.282 (meters)        (06/27/12)   ADJUSTED
 JV7130* NAD 83(2011) EPOCH   -  2010.00
 JV7130* NAVD 88 ORTHO HEIGHT -    88.1   (meters)      289.    (feet) GPS OBS
 JV7130  ______________________________________________________________________
 JV7130  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7130  GEOID HEIGHT    -        -32.200 (meters)                     GEOID93
 JV7130  GEOID HEIGHT    -        -31.837 (meters)                     GEOID18
 JV7130  NAD 83(2011) X  -  1,107,392.243 (meters)                     COMP
 JV7130  NAD 83(2011) Y  - -4,837,388.841 (meters)                     COMP
 JV7130  NAD 83(2011) Z  -  3,993,397.782 (meters)                     COMP
 JV7130  LAPLACE CORR    -         -3.30  (seconds)                    DEFLEC18
 JV7130
 JV7130  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7130  Standards:
 JV7130         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7130            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7130  -------------------------------------------------------------------
 JV7130  NETWORK    0.99   2.18           0.42   0.39   1.11      0.02446172
 JV7130  -------------------------------------------------------------------
 JV7130  Click here for local accuracies and other accuracy information.
 JV7130
 JV7130.The horizontal coordinates were established by GPS observations
 JV7130.and adjusted by the National Geodetic Survey in June 2012.
 JV7130
 JV7130.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7130.been affixed to the stable North American tectonic plate. See 
 JV7130.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7130
 JV7130.The horizontal coordinates are valid at the epoch date displayed above
 JV7130.which is a decimal equivalence of Year/Month/Day.
 JV7130
 JV7130.The orthometric height was determined by GPS observations and a
 JV7130.high-resolution geoid model.
 JV7130
 JV7130.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7130.GEOID18 height accuracy estimate available here.
 JV7130
 JV7130.Click photographs - Photos may exist for this station.
 JV7130
 JV7130.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7130
 JV7130.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7130
 JV7130.The ellipsoidal height was determined by GPS observations
 JV7130.and is referenced to NAD 83.
 JV7130
 JV7130. The following values were computed from the NAD 83(2011) position.
 JV7130
 JV7130;                    North         East     Units Scale Factor Converg.
 JV7130;SPC MD       -   149,356.661   390,834.643   MT  0.99995267   -0 03 59.1
 JV7130;SPC MD       -   490,014.31  1,282,263.32   sFT  0.99995267   -0 03 59.1
 JV7130;SPC VA N     - 2,150,263.251 3,620,743.631   MT  0.99997205   +0 52 12.5
 JV7130;SPC VA N     - 7,054,655.35 11,879,056.40   sFT  0.99997205   +0 52 12.5
 JV7130;UTM  18      - 4,320,230.895   317,675.298   MT  1.00000934   -1 19 33.4
 JV7130
 JV7130!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7130!SPC MD       -   0.99999117  x   0.99995267  =   0.99994384
 JV7130!SPC VA N     -   0.99999117  x   0.99997205  =   0.99996322
 JV7130!UTM  18      -   0.99999117  x   1.00000934  =   1.00000051
 JV7130
 JV7130_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1767520230(NAD 83)
 JV7130
 JV7130                          SUPERSEDED SURVEY CONTROL
 JV7130
 JV7130  NAD 83(2007)-  39 00 43.62234(N)    077 06 20.97563(W) AD(2002.00) 0
 JV7130  ELLIP H (02/10/07)   56.311  (m)                       GP(2002.00)    
 JV7130  ELLIP H (08/30/02)   56.319  (m)                       GP(       ) 4 2
 JV7130  NAD 83(1991)-  39 00 43.62211(N)    077 06 20.97617(W) AD(       ) 1
 JV7130  ELLIP H (01/11/94)   56.237  (m)                       GP(       ) 4 1
 JV7130
 JV7130.Superseded values are not recommended for survey control.
 JV7130
 JV7130.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7130.See file dsdata.pdf to determine how the superseded data were derived.
 JV7130
 JV7130_MARKER: DD = SURVEY DISK
 JV7130_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7130_STAMPING: T.S 20338 MC
 JV7130_MARK LOGO: WSSC
 JV7130_PROJECTION: FLUSH
 JV7130_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7130_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7130+STABILITY: SURFACE MOTION
 JV7130_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7130+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2022
 JV7130
 JV7130  HISTORY     - Date     Condition        Report By
 JV7130  HISTORY     - 1993     MONUMENTED       MSI
 JV7130  HISTORY     - 20021115 GOOD             POWELL
 JV7130  HISTORY     - 20050405 GOOD             USPSQD
 JV7130  HISTORY     - 20061025 GOOD             NGS
 JV7130  HISTORY     - 20200107 GOOD             GEOCAC
 JV7130  HISTORY     - 20220320 GOOD             NGS
 JV7130
 JV7130                          STATION DESCRIPTION
 JV7130
 JV7130'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7130'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7130'5.3 MI (8.5 KM) SOUTHEAST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7130'STATION FROM THE INTERSECTION OF ROCKVILLE PIKE (S.R. 355) AND
 JV7130'TUCKERMAN LANE, PROCEED SOUTH ON ROCKVILLE PIKE FOR 1.3 MI (2.1 KM)
 JV7130'TO THE INTERSECTION WITH ALTA VISTA ROAD.  TURN RIGHT AND TRAVEL WEST
 JV7130'ON ALTA VISTA ROAD FOR 0.4 MI (0.6 KM) TO THE STATION ON THE RIGHT.
 JV7130'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7130'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7130'T.S. 20338 MC. THE DISK IS LOCATED 212.5 FT (64.8 M) NORTH OF THE
 JV7130'NORTH CURB OF ALTA VISTA ROAD, 60.7 FT (18.5 M) EAST OF NORTHEAST
 JV7130'CORNER OF BUILDING NO. 5209, AND 255 FT (77.7 M) SOUTHEAST OF THE
 JV7130'SOUTHEAST CORNER OF A POWER SHED.
 JV7130
 JV7130                          STATION RECOVERY (2002)
 JV7130
 JV7130'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7130'RECOVERED IN GOOD CONDITION.
 JV7130
 JV7130                          STATION RECOVERY (2005)
 JV7130
 JV7130'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7130'RECOVERED IN GOOD CONDITION.
 JV7130
 JV7130                          STATION RECOVERY (2006)
 JV7130
 JV7130'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV7130'RECOVERED IN GOOD CONDITION.
 JV7130
 JV7130                          STATION RECOVERY (2020)
 JV7130
 JV7130'RECOVERY NOTE BY GEOCACHING 2020 (TRM)
 JV7130'BUILDING 5209 NOW HOUSES THE ROCK CREEK DANCE ACADEMY.
 JV7130
 JV7130                          STATION RECOVERY (2022)
 JV7130
 JV7130'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (KA)
 JV7130'RECOVERED AS DESCRIBED.  52 FT (15.8 M) SOUTHEAST OF 30 INCH PINE
 JV7130'TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7132 ***********************************************************************
 JV7132  DESIGNATION -  20340
 JV7132  PID         -  JV7132
 JV7132  STATE/COUNTY-  MD/MONTGOMERY
 JV7132  COUNTRY     -  US
 JV7132  USGS QUAD   -  KENSINGTON (2016)
 JV7132
 JV7132                         *CURRENT SURVEY CONTROL
 JV7132  ______________________________________________________________________
 JV7132* NAD 83(2011) POSITION- 39 05 19.88037(N) 077 06 09.07407(W)   ADJUSTED
 JV7132* NAD 83(2011) ELLIP HT-    68.562 (meters)        (06/27/12)   ADJUSTED
 JV7132* NAD 83(2011) EPOCH   -  2010.00
 JV7132* NAVD 88 ORTHO HEIGHT -   100.4   (meters)      329.    (feet) GPS OBS
 JV7132  ______________________________________________________________________
 JV7132  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7132  GEOID HEIGHT    -        -32.150 (meters)                     GEOID93
 JV7132  GEOID HEIGHT    -        -31.784 (meters)                     GEOID18
 JV7132  NAD 83(2011) X  -  1,106,475.472 (meters)                     COMP
 JV7132  NAD 83(2011) Y  - -4,832,102.439 (meters)                     COMP
 JV7132  NAD 83(2011) Z  -  4,000,021.537 (meters)                     COMP
 JV7132  LAPLACE CORR    -         -2.72  (seconds)                    DEFLEC18
 JV7132
 JV7132  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7132  Standards:
 JV7132         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7132            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7132  -------------------------------------------------------------------
 JV7132  NETWORK    1.03   2.02           0.46   0.37   1.03     -0.04034046
 JV7132  -------------------------------------------------------------------
 JV7132  Click here for local accuracies and other accuracy information.
 JV7132
 JV7132.The horizontal coordinates were established by GPS observations
 JV7132.and adjusted by the National Geodetic Survey in June 2012.
 JV7132
 JV7132.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7132.been affixed to the stable North American tectonic plate. See 
 JV7132.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7132
 JV7132.The horizontal coordinates are valid at the epoch date displayed above
 JV7132.which is a decimal equivalence of Year/Month/Day.
 JV7132
 JV7132.The orthometric height was determined by GPS observations and a
 JV7132.high-resolution geoid model.
 JV7132
 JV7132.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7132.GEOID18 height accuracy estimate available here.
 JV7132
 JV7132.Click photographs - Photos may exist for this station.
 JV7132
 JV7132.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7132
 JV7132.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7132
 JV7132.The ellipsoidal height was determined by GPS observations
 JV7132.and is referenced to NAD 83.
 JV7132
 JV7132. The following values were computed from the NAD 83(2011) position.
 JV7132
 JV7132;                    North         East     Units Scale Factor Converg.
 JV7132;SPC MD       -   157,875.166   391,130.515   MT  0.99995674   -0 03 51.6
 JV7132;SPC MD       -   517,962.11  1,283,234.03   sFT  0.99995674   -0 03 51.6
 JV7132;UTM  18      - 4,328,741.286   318,158.534   MT  1.00000717   -1 19 33.8
 JV7132
 JV7132!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7132!SPC MD       -   0.99998924  x   0.99995674  =   0.99994598
 JV7132!UTM  18      -   0.99998924  x   1.00000717  =   0.99999641
 JV7132
 JV7132_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1815828741(NAD 83)
 JV7132
 JV7132                          SUPERSEDED SURVEY CONTROL
 JV7132
 JV7132  NAD 83(2007)-  39 05 19.88056(N)    077 06 09.07486(W) AD(2002.00) 0
 JV7132  ELLIP H (02/10/07)   68.589  (m)                       GP(2002.00)    
 JV7132  ELLIP H (08/30/02)   68.608  (m)                       GP(       ) 4 2
 JV7132  NAD 83(1991)-  39 05 19.88007(N)    077 06 09.07505(W) AD(       ) 1
 JV7132  ELLIP H (01/11/94)   68.520  (m)                       GP(       ) 4 1
 JV7132
 JV7132.Superseded values are not recommended for survey control.
 JV7132
 JV7132.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7132.See file dsdata.pdf to determine how the superseded data were derived.
 JV7132
 JV7132_MARKER: DD = SURVEY DISK
 JV7132_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7132_STAMPING: T.S. 20340 MC
 JV7132_MARK LOGO: WSSC
 JV7132_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7132_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7132+STABILITY: SURFACE MOTION
 JV7132_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7132+SATELLITE: SATELLITE OBSERVATIONS - April 07, 2005
 JV7132
 JV7132  HISTORY     - Date     Condition        Report By
 JV7132  HISTORY     - 1993     MONUMENTED       MSI
 JV7132  HISTORY     - 20020118 GOOD             URS
 JV7132  HISTORY     - 20021017 GOOD             POWELL
 JV7132  HISTORY     - 20030827 GOOD             URS
 JV7132  HISTORY     - 20050407 GOOD             USPSQD
 JV7132  HISTORY     - 20091022 GOOD             NGS
 JV7132
 JV7132                          STATION DESCRIPTION
 JV7132
 JV7132'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7132'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7132'2.3 MI (3.7 KM) EAST OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7132'FROM THE INTERSECTION OF NORBECK ROAD (S.R. 28) AND BEL PRE ROAD,
 JV7132'PROCEED EAST ON BEL PRE ROAD FOR 0.5 MI (0.8 KM) TO THE INTERSECTION
 JV7132'WITH ARCTIC AVENUE.  TURN RIGHT AND TRAVEL SOUTH ON ARCTIC AVENUE FOR
 JV7132'0.5 MI (0.8 KM) TO THE INTERSECTION WITH FLINT ROCK ROAD.  TURN RIGHT
 JV7132'AND TRAVEL WEST ON FLINT ROCK ROAD FOR 0.45 MI (0.72 KM) TO THE
 JV7132'STATION ON THE RIGHT.
 JV7132'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7132'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7132'T.S. 20340 MC. THE DISK IS LOCATED 15.0 FT (4.6 M) NORTHWEST OF THE
 JV7132'CENTERLINE OF FLINT ROCK ROAD, 30 FT (9.1 M) NORTHEAST OF POWER POLE
 JV7132'NO. 14336, AND 63 FT (19.2 M) SOUTH OF THE SOUTHWEST CORNER OF HOUSE
 JV7132'NO. 14018.
 JV7132
 JV7132                          STATION RECOVERY (2002)
 JV7132
 JV7132'RECOVERY NOTE BY URS COMPANY 2002 (EN)
 JV7132'RECOVERED IN GOOD CONDITION.
 JV7132
 JV7132                          STATION RECOVERY (2002)
 JV7132
 JV7132'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7132'OCCUPANT OF HOUSE NO 14016 HAS REMOVED WITNESS POST.
 JV7132
 JV7132                          STATION RECOVERY (2003)
 JV7132
 JV7132'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 JV7132'RECOVERED IN GOOD CONDITION.
 JV7132
 JV7132                          STATION RECOVERY (2005)
 JV7132
 JV7132'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7132'RECOVERED IN GOOD CONDITION.
 JV7132
 JV7132                          STATION RECOVERY (2009)
 JV7132
 JV7132'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV7132'MARK IS RECESSED 8 CM (0.25 FT) AND IS 0.61 (2.0 FT) M WNW OF THE BACK
 JV7132'OF THE CURB OF FLINT ROCK RD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7133 ***********************************************************************
 JV7133  DESIGNATION -  20341
 JV7133  PID         -  JV7133
 JV7133  STATE/COUNTY-  MD/MONTGOMERY
 JV7133  COUNTRY     -  US
 JV7133  USGS QUAD   -  KENSINGTON (2016)
 JV7133
 JV7133                         *CURRENT SURVEY CONTROL
 JV7133  ______________________________________________________________________
 JV7133* NAD 83(2011) POSITION- 39 00 39.23369(N) 077 04 50.57327(W)   ADJUSTED
 JV7133* NAD 83(2011) ELLIP HT-    43.708 (meters)        (06/27/12)   ADJUSTED
 JV7133* NAD 83(2011) EPOCH   -  2010.00
 JV7133* NAVD 88 ORTHO HEIGHT -    75.6   (meters)      248.    (feet) GPS OBS
 JV7133  ______________________________________________________________________
 JV7133  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7133  GEOID HEIGHT    -        -32.240 (meters)                     GEOID93
 JV7133  GEOID HEIGHT    -        -31.880 (meters)                     GEOID18
 JV7133  NAD 83(2011) X  -  1,109,529.126 (meters)                     COMP
 JV7133  NAD 83(2011) Y  - -4,836,976.537 (meters)                     COMP
 JV7133  NAD 83(2011) Z  -  3,993,284.713 (meters)                     COMP
 JV7133  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 JV7133
 JV7133  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7133  Standards:
 JV7133         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7133            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7133  -------------------------------------------------------------------
 JV7133  NETWORK    2.39   4.27           1.01   0.94   2.18     -0.08661871
 JV7133  -------------------------------------------------------------------
 JV7133  Click here for local accuracies and other accuracy information.
 JV7133
 JV7133.The horizontal coordinates were established by GPS observations
 JV7133.and adjusted by the National Geodetic Survey in June 2012.
 JV7133
 JV7133.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7133.been affixed to the stable North American tectonic plate. See 
 JV7133.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7133
 JV7133.The horizontal coordinates are valid at the epoch date displayed above
 JV7133.which is a decimal equivalence of Year/Month/Day.
 JV7133
 JV7133.The orthometric height was determined by GPS observations and a
 JV7133.high-resolution geoid model.
 JV7133
 JV7133.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7133.GEOID18 height accuracy estimate available here.
 JV7133
 JV7133.Click photographs - Photos may exist for this station.
 JV7133
 JV7133.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7133
 JV7133.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7133
 JV7133.The ellipsoidal height was determined by GPS observations
 JV7133.and is referenced to NAD 83.
 JV7133
 JV7133. The following values were computed from the NAD 83(2011) position.
 JV7133
 JV7133;                    North         East     Units Scale Factor Converg.
 JV7133;SPC MD       -   149,219.116   393,009.372   MT  0.99995262   -0 03 02.4
 JV7133;SPC MD       -   489,563.05  1,289,398.25   sFT  0.99995262   -0 03 02.4
 JV7133;SPC VA N     - 2,150,161.267 3,622,920.360   MT  0.99997191   +0 53 08.9
 JV7133;SPC VA N     - 7,054,320.76 11,886,197.88   sFT  0.99997191   +0 53 08.9
 JV7133;UTM  18      - 4,320,045.572   319,846.591   MT  0.99999965   -1 18 36.3
 JV7133
 JV7133!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7133!SPC MD       -   0.99999314  x   0.99995262  =   0.99994576
 JV7133!SPC VA N     -   0.99999314  x   0.99997191  =   0.99996505
 JV7133!UTM  18      -   0.99999314  x   0.99999965  =   0.99999279
 JV7133
 JV7133_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1984620045(NAD 83)
 JV7133
 JV7133                          SUPERSEDED SURVEY CONTROL
 JV7133
 JV7133  NAD 83(2007)-  39 00 39.23420(N)    077 04 50.57425(W) AD(2002.00) 0
 JV7133  ELLIP H (02/10/07)   43.730  (m)                       GP(2002.00)    
 JV7133  ELLIP H (08/30/02)   43.738  (m)                       GP(       ) 4 2
 JV7133  NAD 83(1991)-  39 00 39.23404(N)    077 04 50.57481(W) AD(       ) 1
 JV7133  ELLIP H (01/11/94)   43.655  (m)                       GP(       ) 4 1
 JV7133
 JV7133.Superseded values are not recommended for survey control.
 JV7133
 JV7133.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7133.See file dsdata.pdf to determine how the superseded data were derived.
 JV7133
 JV7133_MARKER: DD = SURVEY DISK
 JV7133_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7133_STAMPING: T.S. 20341 MC
 JV7133_MARK LOGO: WSSC
 JV7133_PROJECTION: FLUSH
 JV7133_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7133_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7133+STABILITY: SURFACE MOTION
 JV7133_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7133+SATELLITE: SATELLITE OBSERVATIONS - September 03, 2020
 JV7133
 JV7133  HISTORY     - Date     Condition        Report By
 JV7133  HISTORY     - 1993     MONUMENTED       MSI
 JV7133  HISTORY     - 19950317 GOOD             MSI
 JV7133  HISTORY     - 20021203 GOOD             POWELL
 JV7133  HISTORY     - 20050407 GOOD             USPSQD
 JV7133  HISTORY     - 20131001 GOOD             BASE9
 JV7133  HISTORY     - 20140310 GOOD             INDIV
 JV7133  HISTORY     - 20200903 GOOD             NGS
 JV7133
 JV7133                          STATION DESCRIPTION
 JV7133
 JV7133'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7133'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7133'1.9 MI (3.1 KM) NORTH OF THE TOWN OF CHEVY CHASE. TO REACH THE
 JV7133'STATION FROM THE INTERSECTION OF KNOWLES AVENUE (S.R. 547) AND
 JV7133'CONNECTICUT AVENUE (S.R. 193), PROCEED SOUTH ON CONNECTICUT AVENUE
 JV7133'FOR 1.2 MI (1.9 KM) TO THE ENTRANCE OF THE GRACE EPISCOPAL DAY
 JV7133'SCHOOL,  AND THE STATION ON THE LEFT.
 JV7133'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7133'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7133'T.S. 20341 MC. THE DISK IS LOCATED 55.0 FT (16.8 M) EAST OF THE
 JV7133'CENTERLINE OF THE MEDIAN ON CONNECTICUT AVENUE, 62.4 FT (19.0 M)
 JV7133'SOUTH OF POLE NO. 776428-9885, 105.7 FT (32.2 M) NORTH OF POWER POLE
 JV7133'NO. 776428-9668.
 JV7133
 JV7133                          STATION RECOVERY (1995)
 JV7133
 JV7133'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1995 (BAC)
 JV7133'RECOVERED AS DESCRIBED.
 JV7133
 JV7133                          STATION RECOVERY (2002)
 JV7133
 JV7133'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7133'RECOVERED IN GOOD CONDITION.
 JV7133
 JV7133                          STATION RECOVERY (2005)
 JV7133
 JV7133'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7133'RECOVERED IN GOOD CONDITION.
 JV7133
 JV7133                          STATION RECOVERY (2013)
 JV7133
 JV7133'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV7133'RECOVERED IN GOOD CONDITION.
 JV7133
 JV7133                          STATION RECOVERY (2014)
 JV7133
 JV7133'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014
 JV7133'RECOVERED IN GOOD CONDITION. J.A.RICE
 JV7133
 JV7133                          STATION RECOVERY (2020)
 JV7133
 JV7133'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (RAH)
 JV7133'CONTACT GRACE EPISCOPAL DAY SCHOOL WHEN OCCUPYING THE STATION.
 JV7133'PARKING IS IN THE DRIVEWAY TO THE SCHOOL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7134 ***********************************************************************
 JV7134  DESIGNATION -  20342
 JV7134  PID         -  JV7134
 JV7134  STATE/COUNTY-  MD/MONTGOMERY
 JV7134  COUNTRY     -  US
 JV7134  USGS QUAD   -  KENSINGTON (2016)
 JV7134
 JV7134                         *CURRENT SURVEY CONTROL
 JV7134  ______________________________________________________________________
 JV7134* NAD 83(2011) POSITION- 39 03 06.15069(N) 077 04 30.93210(W)   ADJUSTED
 JV7134* NAD 83(2011) ELLIP HT-    62.655 (meters)        (06/27/12)   ADJUSTED
 JV7134* NAD 83(2011) EPOCH   -  2010.00
 JV7134* NAVD 88 ORTHO HEIGHT -    94.5   (meters)      310.    (feet) GPS OBS
 JV7134  ______________________________________________________________________
 JV7134  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7134  GEOID HEIGHT    -        -32.220 (meters)                     GEOID93
 JV7134  GEOID HEIGHT    -        -31.856 (meters)                     GEOID18
 JV7134  NAD 83(2011) X  -  1,109,354.839 (meters)                     COMP
 JV7134  NAD 83(2011) Y  - -4,834,104.348 (meters)                     COMP
 JV7134  NAD 83(2011) Z  -  3,996,816.051 (meters)                     COMP
 JV7134  LAPLACE CORR    -         -3.17  (seconds)                    DEFLEC18
 JV7134
 JV7134  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7134  Standards:
 JV7134         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7134            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7134  -------------------------------------------------------------------
 JV7134  NETWORK    1.02   1.94           0.43   0.40   0.99     -0.06943076
 JV7134  -------------------------------------------------------------------
 JV7134  Click here for local accuracies and other accuracy information.
 JV7134
 JV7134.The horizontal coordinates were established by GPS observations
 JV7134.and adjusted by the National Geodetic Survey in June 2012.
 JV7134
 JV7134.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7134.been affixed to the stable North American tectonic plate. See 
 JV7134.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7134
 JV7134.The horizontal coordinates are valid at the epoch date displayed above
 JV7134.which is a decimal equivalence of Year/Month/Day.
 JV7134
 JV7134.The orthometric height was determined by GPS observations and a
 JV7134.high-resolution geoid model.
 JV7134
 JV7134.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7134.GEOID18 height accuracy estimate available here.
 JV7134
 JV7134.Click photographs - Photos may exist for this station.
 JV7134
 JV7134.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7134
 JV7134.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7134
 JV7134.The ellipsoidal height was determined by GPS observations
 JV7134.and is referenced to NAD 83.
 JV7134
 JV7134. The following values were computed from the NAD 83(2011) position.
 JV7134
 JV7134;                    North         East     Units Scale Factor Converg.
 JV7134;SPC MD       -   153,749.097   393,485.635   MT  0.99995455   -0 02 50.0
 JV7134;SPC MD       -   504,425.16  1,290,960.79   sFT  0.99995455   -0 02 50.0
 JV7134;UTM  18      - 4,324,564.188   320,422.377   MT  0.99999709   -1 18 28.1
 JV7134
 JV7134!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7134!SPC MD       -   0.99999017  x   0.99995455  =   0.99994472
 JV7134!UTM  18      -   0.99999017  x   0.99999709  =   0.99998726
 JV7134
 JV7134_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2042224564(NAD 83)
 JV7134
 JV7134                          SUPERSEDED SURVEY CONTROL
 JV7134
 JV7134  NAD 83(2007)-  39 03 06.15092(N)    077 04 30.93296(W) AD(2002.00) 0
 JV7134  ELLIP H (02/10/07)   62.685  (m)                       GP(2002.00)    
 JV7134  ELLIP H (08/30/02)   62.696  (m)                       GP(       ) 4 2
 JV7134  NAD 83(1991)-  39 03 06.15061(N)    077 04 30.93316(W) AD(       ) 1
 JV7134  ELLIP H (01/11/94)   62.615  (m)                       GP(       ) 4 1
 JV7134
 JV7134.Superseded values are not recommended for survey control.
 JV7134
 JV7134.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7134.See file dsdata.pdf to determine how the superseded data were derived.
 JV7134
 JV7134_MARKER: DD = SURVEY DISK
 JV7134_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7134_STAMPING: T.S. 20342 MC
 JV7134_MARK LOGO: WSSC
 JV7134_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7134_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7134+STABILITY: SURFACE MOTION
 JV7134_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7134+SATELLITE: SATELLITE OBSERVATIONS - November 26, 2008
 JV7134
 JV7134  HISTORY     - Date     Condition        Report By
 JV7134  HISTORY     - 1993     MONUMENTED       MSI
 JV7134  HISTORY     - 20021203 GOOD             POWELL
 JV7134  HISTORY     - 20030827 GOOD             URS
 JV7134  HISTORY     - 20050407 GOOD             USPSQD
 JV7134  HISTORY     - 20081126 GOOD             NGS
 JV7134
 JV7134                          STATION DESCRIPTION
 JV7134
 JV7134'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7134'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7134'4.4 MI (7.1 KM) SOUTHEAST OF THE CITY OF ROCKVILLE. THE STATION IS
 JV7134'LOCATED IN THE SOUTHWEST CORNER OF THE INTERSECTION OF VEIRS MILL
 JV7134'ROAD (S.R. 586) AND CONNECTICUT AVENUE (S.R. 185).
 JV7134'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7134'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7134'T.S. 20342 MC. THE DISK IS LOCATED 68.8 FT (21.0 M) SOUTH-SOUTHWEST
 JV7134'OF PEPCO POWER POLE NO. 778443-4872, 25.6 FT (7.8 M) EAST OF A
 JV7134'MANHOLE, AND 82.0 FT (25.0 M) NORTHWEST OF PEPCO POWER POLE NO.
 JV7134'778443-6163.
 JV7134
 JV7134                          STATION RECOVERY (2002)
 JV7134
 JV7134'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7134'RECOVERED IN GOOD CONDITION.
 JV7134
 JV7134                          STATION RECOVERY (2003)
 JV7134
 JV7134'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 JV7134'RECOVERED IN GOOD CONDITION.
 JV7134
 JV7134                          STATION RECOVERY (2005)
 JV7134
 JV7134'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7134'RECOVERED IN GOOD CONDITION.
 JV7134
 JV7134                          STATION RECOVERY (2008)
 JV7134
 JV7134'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7134'MARK IS 0.95 M (3.1 FT) SW OF THE WEST EDGE OF A SIDEWALK THAT
 JV7134'PARALLELS VEIRS MILL RD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7135 ***********************************************************************
 JV7135  DESIGNATION -  20343
 JV7135  PID         -  JV7135
 JV7135  STATE/COUNTY-  MD/MONTGOMERY
 JV7135  COUNTRY     -  US
 JV7135  USGS QUAD   -  SANDY SPRING (2016)
 JV7135
 JV7135                         *CURRENT SURVEY CONTROL
 JV7135  ______________________________________________________________________
 JV7135* NAD 83(2011) POSITION- 39 10 28.02597(N) 077 03 12.86616(W)   ADJUSTED
 JV7135* NAD 83(2011) ELLIP HT-   110.366 (meters)        (06/27/12)   ADJUSTED
 JV7135* NAD 83(2011) EPOCH   -  2010.00
 JV7135* NAVD 88 ORTHO HEIGHT -   142.2   (meters)      467.    (feet) GPS OBS
 JV7135  ______________________________________________________________________
 JV7135  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7135  GEOID HEIGHT    -        -32.190 (meters)                     GEOID93
 JV7135  GEOID HEIGHT    -        -31.840 (meters)                     GEOID18
 JV7135  NAD 83(2011) X  -  1,109,266.672 (meters)                     COMP
 JV7135  NAD 83(2011) Y  - -4,825,342.212 (meters)                     COMP
 JV7135  NAD 83(2011) Z  -  4,007,419.244 (meters)                     COMP
 JV7135  LAPLACE CORR    -         -3.28  (seconds)                    DEFLEC18
 JV7135
 JV7135  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7135  Standards:
 JV7135         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7135            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7135  -------------------------------------------------------------------
 JV7135  NETWORK    1.43   2.96           0.64   0.52   1.51     -0.04887265
 JV7135  -------------------------------------------------------------------
 JV7135  Click here for local accuracies and other accuracy information.
 JV7135
 JV7135.The horizontal coordinates were established by GPS observations
 JV7135.and adjusted by the National Geodetic Survey in June 2012.
 JV7135
 JV7135.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7135.been affixed to the stable North American tectonic plate. See 
 JV7135.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7135
 JV7135.The horizontal coordinates are valid at the epoch date displayed above
 JV7135.which is a decimal equivalence of Year/Month/Day.
 JV7135
 JV7135.The orthometric height was determined by GPS observations and a
 JV7135.high-resolution geoid model.
 JV7135
 JV7135.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7135.GEOID18 height accuracy estimate available here.
 JV7135
 JV7135.Click photographs - Photos may exist for this station.
 JV7135
 JV7135.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7135
 JV7135.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7135
 JV7135.The ellipsoidal height was determined by GPS observations
 JV7135.and is referenced to NAD 83.
 JV7135
 JV7135. The following values were computed from the NAD 83(2011) position.
 JV7135
 JV7135;                    North         East     Units Scale Factor Converg.
 JV7135;SPC MD       -   167,373.859   395,370.670   MT  0.99996340   -0 02 01.0
 JV7135;SPC MD       -   549,125.74  1,297,145.27   sFT  0.99996340   -0 02 01.0
 JV7135;UTM  18      - 4,338,144.576   322,607.164   MT  0.99998748   -1 17 51.2
 JV7135
 JV7135!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7135!SPC MD       -   0.99998268  x   0.99996340  =   0.99994609
 JV7135!UTM  18      -   0.99998268  x   0.99998748  =   0.99997016
 JV7135
 JV7135:                Primary Azimuth Mark                     Grid Az
 JV7135:SPC MD       -  20353                                    064 20 39.2
 JV7135:UTM  18      -  20353                                    065 36 29.4
 JV7135
 JV7135_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2260738144(NAD 83)
 JV7135
 JV7135|---------------------------------------------------------------------|
 JV7135| PID    Reference Object                     Distance      Geod. Az  |
 JV7135|                                                           dddmmss.s |
 JV7135| JV7145 20353                               482.618 METERS 0641838.2 |
 JV7135|---------------------------------------------------------------------|
 JV7135
 JV7135                          SUPERSEDED SURVEY CONTROL
 JV7135
 JV7135  NAD 83(2007)-  39 10 28.02601(N)    077 03 12.86696(W) AD(2002.00) 0
 JV7135  ELLIP H (02/10/07)  110.405  (m)                       GP(2002.00)    
 JV7135  ELLIP H (08/30/02)  110.410  (m)                       GP(       ) 4 2
 JV7135  NAD 83(1991)-  39 10 28.02561(N)    077 03 12.86683(W) AD(       ) 1
 JV7135  ELLIP H (01/11/94)  110.338  (m)                       GP(       ) 4 1
 JV7135
 JV7135.Superseded values are not recommended for survey control.
 JV7135
 JV7135.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7135.See file dsdata.pdf to determine how the superseded data were derived.
 JV7135
 JV7135_MARKER: DD = SURVEY DISK
 JV7135_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7135_STAMPING: T.S. 20343 MC
 JV7135_MARK LOGO: WSSC
 JV7135_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7135_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7135+STABILITY: SURFACE MOTION
 JV7135_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7135+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7135
 JV7135  HISTORY     - Date     Condition        Report By
 JV7135  HISTORY     - 1993     MONUMENTED       MSI
 JV7135  HISTORY     - 20030411 MARK NOT FOUND   INDIV
 JV7135
 JV7135                          STATION DESCRIPTION
 JV7135
 JV7135'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7135'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7135'0.5 MI (0.8 KM) SOUTHEAST OF THE TOWN OF BROOKEVILLE.  TO REACH THE
 JV7135'STATION FROM THE INTERSECTION OF OLNEY-LAYTONSVILLE RD (S.R. 108) AND
 JV7135'GEORGIA AVENUE (S.R. 97), PROCEED NORTH ON GEORGIA AVENUE FOR 1.4 MI
 JV7135'(2.3 KM) TO THE INTERSECTION WITH GOLD MINE ROAD.  TURN RIGHT AND
 JV7135'TRAVEL EAST ON GOLD MINE ROAD FOR 0.3 MI (0.5 KM) TO THE STATION ON
 JV7135'THE LEFT.
 JV7135'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7135'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7135'T.S. 20343 MC. THE DISK IS LOCATED 27.4 FT (8.4 M) NORTHWEST OF THE
 JV7135'CENTERLINE OF GOLD MINE ROAD, 113.1 FT (34.5 M) WEST OF MAILBOX NO.
 JV7135'2601, AND 18.5 FT (5.6 M) EAST OF PEPCO POWER POLE NO. 784488-6840.
 JV7135
 JV7135                          STATION RECOVERY (2003)
 JV7135
 JV7135'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (JAR)
 JV7135'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7136 ***********************************************************************
 JV7136  DESIGNATION -  20344
 JV7136  PID         -  JV7136
 JV7136  STATE/COUNTY-  MD/MONTGOMERY
 JV7136  COUNTRY     -  US
 JV7136  USGS QUAD   -  KENSINGTON (2016)
 JV7136
 JV7136                         *CURRENT SURVEY CONTROL
 JV7136  ______________________________________________________________________
 JV7136* NAD 83(2011) POSITION- 39 00 38.61159(N) 077 02 56.23639(W)   ADJUSTED
 JV7136* NAD 83(2011) ELLIP HT-    69.349 (meters)        (06/27/12)   ADJUSTED
 JV7136* NAD 83(2011) EPOCH   -  2010.00
 JV7136* NAVD 88 ORTHO HEIGHT -   101.3   (meters)      332.    (feet) GPS OBS
 JV7136  ______________________________________________________________________
 JV7136  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7136  GEOID HEIGHT    -        -32.290 (meters)                     GEOID93
 JV7136  GEOID HEIGHT    -        -31.927 (meters)                     GEOID18
 JV7136  NAD 83(2011) X  -  1,112,217.364 (meters)                     COMP
 JV7136  NAD 83(2011) Y  - -4,836,391.944 (meters)                     COMP
 JV7136  NAD 83(2011) Z  -  3,993,285.946 (meters)                     COMP
 JV7136  LAPLACE CORR    -         -2.71  (seconds)                    DEFLEC18
 JV7136
 JV7136  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7136  Standards:
 JV7136         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7136            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7136  -------------------------------------------------------------------
 JV7136  NETWORK    1.58   2.21           0.71   0.57   1.13      0.04498819
 JV7136  -------------------------------------------------------------------
 JV7136  Click here for local accuracies and other accuracy information.
 JV7136
 JV7136.The horizontal coordinates were established by GPS observations
 JV7136.and adjusted by the National Geodetic Survey in June 2012.
 JV7136
 JV7136.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7136.been affixed to the stable North American tectonic plate. See 
 JV7136.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7136
 JV7136.The horizontal coordinates are valid at the epoch date displayed above
 JV7136.which is a decimal equivalence of Year/Month/Day.
 JV7136
 JV7136.The orthometric height was determined by GPS observations and a
 JV7136.high-resolution geoid model.
 JV7136
 JV7136.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7136.GEOID18 height accuracy estimate available here.
 JV7136
 JV7136.Click photographs - Photos may exist for this station.
 JV7136
 JV7136.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7136
 JV7136.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7136
 JV7136.The ellipsoidal height was determined by GPS observations
 JV7136.and is referenced to NAD 83.
 JV7136
 JV7136. The following values were computed from the NAD 83(2011) position.
 JV7136
 JV7136;                    North         East     Units Scale Factor Converg.
 JV7136;SPC MD       -   149,197.979   395,760.085   MT  0.99995261   -0 01 50.6
 JV7136;SPC MD       -   489,493.70  1,298,422.88   sFT  0.99995261   -0 01 50.6
 JV7136;SPC VA N     - 2,150,185.087 3,625,671.103   MT  0.99997189   +0 54 20.2
 JV7136;SPC VA N     - 7,054,398.91 11,895,222.61   sFT  0.99997189   +0 54 20.2
 JV7136;UTM  18      - 4,319,963.980   322,596.287   MT  0.99998754   -1 17 24.3
 JV7136
 JV7136!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7136!SPC MD       -   0.99998912  x   0.99995261  =   0.99994173
 JV7136!SPC VA N     -   0.99998912  x   0.99997189  =   0.99996101
 JV7136!UTM  18      -   0.99998912  x   0.99998754  =   0.99997666
 JV7136
 JV7136:                Primary Azimuth Mark                     Grid Az
 JV7136:SPC MD       -  20301                                    105 42 20.9
 JV7136:SPC VA N     -  20301                                    104 46 10.1
 JV7136:UTM  18      -  20301                                    106 57 54.6
 JV7136
 JV7136_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2259619963(NAD 83)
 JV7136
 JV7136|---------------------------------------------------------------------|
 JV7136| PID    Reference Object                     Distance      Geod. Az  |
 JV7136|                                                           dddmmss.s |
 JV7136| JV7093 20301                               428.765 METERS 1054030.3 |
 JV7136|---------------------------------------------------------------------|
 JV7136
 JV7136                          SUPERSEDED SURVEY CONTROL
 JV7136
 JV7136  NAD 83(2007)-  39 00 38.61156(N)    077 02 56.23737(W) AD(2002.00) 0
 JV7136  ELLIP H (02/10/07)   69.398  (m)                       GP(2002.00)    
 JV7136  ELLIP H (08/30/02)   69.400  (m)                       GP(       ) 4 2
 JV7136  NAD 83(1991)-  39 00 38.61143(N)    077 02 56.23775(W) AD(       ) 1
 JV7136  ELLIP H (01/11/94)   69.328  (m)                       GP(       ) 4 1
 JV7136
 JV7136.Superseded values are not recommended for survey control.
 JV7136
 JV7136.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7136.See file dsdata.pdf to determine how the superseded data were derived.
 JV7136
 JV7136_MARKER: DD = SURVEY DISK
 JV7136_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7136_STAMPING: T.S. 20344 M.C.
 JV7136_MARK LOGO: WSSC
 JV7136_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7136_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7136+STABILITY: SURFACE MOTION
 JV7136_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV7136+SATELLITE: SATELLITE OBSERVATIONS - May 21, 2007
 JV7136
 JV7136  HISTORY     - Date     Condition        Report By
 JV7136  HISTORY     - 1993     MONUMENTED       MSI
 JV7136  HISTORY     - 19960310 GOOD             MSI
 JV7136  HISTORY     - 20021115 GOOD             POWELL
 JV7136  HISTORY     - 20050407 GOOD             USPSQD
 JV7136  HISTORY     - 20070521 GOOD             MCDPW
 JV7136
 JV7136                          STATION DESCRIPTION
 JV7136
 JV7136'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7136'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7136'2.8 MI (4.5 KM) NORTHEAST OF THE TOWN OF CHEVY CHASE. TO REACH THE
 JV7136'STATION FROM THE INTERSECTION OF VEIRS MILL ROAD (S.R. 586) AND
 JV7136'GEORGIA AVENUE (S.R. 97), PROCEED SOUTH ON GEORGIA AVENUE FOR 1.9 MI
 JV7136'(3.1 KM) TO THE INTERSECTION WITH SEMINARY ROAD. TURN RIGHT AND
 JV7136'TRAVEL WEST ON SEMINARY ROAD FOR 0.5 MI (0.8 KM) TO THE STATION ON
 JV7136'THE LEFT, IN FRONT OF HOUSE NO. 2304.
 JV7136'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7136'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7136'T.S. 20344 MC. THE DISK IS LOCATED 16.4 FT (5.0 M) SOUTH THE CENTER
 JV7136'LINE OF SEMINARY ROAD, 39.2 FT (11.9 M) NORTHWEST OF C AND P
 JV7136'TELEPHONE POLE NO. MD M9, AND 34.4 FT (10.5 M) EAST OF POWER POLE NO.
 JV7136'785428-9773.
 JV7136
 JV7136                          STATION RECOVERY (1996)
 JV7136
 JV7136'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1996 (JC)
 JV7136'RECOVERED AS DESCRIBED.
 JV7136
 JV7136                          STATION RECOVERY (2002)
 JV7136
 JV7136'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7136'RECOVERED IN GOOD CONDITION.
 JV7136
 JV7136                          STATION RECOVERY (2005)
 JV7136
 JV7136'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7136'RECOVERED IN GOOD CONDITION.
 JV7136
 JV7136                          STATION RECOVERY (2007)
 JV7136
 JV7136'RECOVERY NOTE BY MONTGOMERY COUNTY DEPT OF PUBL 2007 (EJG)
 JV7136'RECOVERED AS DESCRIBED AND IN GOOD CONDITION. MARK IS APPROX. 1' DEEP
 JV7136'FROM SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7137 ***********************************************************************
 JV7137  DESIGNATION -  20345
 JV7137  PID         -  JV7137
 JV7137  STATE/COUNTY-  MD/MONTGOMERY
 JV7137  COUNTRY     -  US
 JV7137  USGS QUAD   -  KENSINGTON (2016)
 JV7137
 JV7137                         *CURRENT SURVEY CONTROL
 JV7137  ______________________________________________________________________
 JV7137* NAD 83(2011) POSITION- 39 02 39.09372(N) 077 03 06.87914(W)   ADJUSTED
 JV7137* NAD 83(2011) ELLIP HT-   113.098 (meters)        (06/27/12)   ADJUSTED
 JV7137* NAD 83(2011) EPOCH   -  2010.00
 JV7137* NAVD 88 ORTHO HEIGHT -   145.0   (meters)      476.    (feet) GPS OBS
 JV7137  ______________________________________________________________________
 JV7137  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7137  GEOID HEIGHT    -        -32.260 (meters)                     GEOID93
 JV7137  GEOID HEIGHT    -        -31.899 (meters)                     GEOID18
 JV7137  NAD 83(2011) X  -  1,111,451.203 (meters)                     COMP
 JV7137  NAD 83(2011) Y  - -4,834,202.340 (meters)                     COMP
 JV7137  NAD 83(2011) Z  -  3,996,199.824 (meters)                     COMP
 JV7137  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 JV7137
 JV7137  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7137  Standards:
 JV7137         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7137            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7137  -------------------------------------------------------------------
 JV7137  NETWORK    1.17   2.63           0.51   0.44   1.34      0.02307478
 JV7137  -------------------------------------------------------------------
 JV7137  Click here for local accuracies and other accuracy information.
 JV7137
 JV7137.The horizontal coordinates were established by GPS observations
 JV7137.and adjusted by the National Geodetic Survey in June 2012.
 JV7137
 JV7137.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7137.been affixed to the stable North American tectonic plate. See 
 JV7137.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7137
 JV7137.The horizontal coordinates are valid at the epoch date displayed above
 JV7137.which is a decimal equivalence of Year/Month/Day.
 JV7137
 JV7137.The orthometric height was determined by GPS observations and a
 JV7137.high-resolution geoid model.
 JV7137
 JV7137.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7137.GEOID18 height accuracy estimate available here.
 JV7137
 JV7137.Click photographs - Photos may exist for this station.
 JV7137
 JV7137.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7137
 JV7137.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7137
 JV7137.The ellipsoidal height was determined by GPS observations
 JV7137.and is referenced to NAD 83.
 JV7137
 JV7137. The following values were computed from the NAD 83(2011) position.
 JV7137
 JV7137;                    North         East     Units Scale Factor Converg.
 JV7137;SPC MD       -   152,913.348   395,506.153   MT  0.99995415   -0 01 57.3
 JV7137;SPC MD       -   501,683.21  1,297,589.77   sFT  0.99995415   -0 01 57.3
 JV7137;UTM  18      - 4,323,684.162   322,424.098   MT  0.99998829   -1 17 34.4
 JV7137
 JV7137!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7137!SPC MD       -   0.99998226  x   0.99995415  =   0.99993641
 JV7137!UTM  18      -   0.99998226  x   0.99998829  =   0.99997055
 JV7137
 JV7137_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2242423684(NAD 83)
 JV7137
 JV7137                          SUPERSEDED SURVEY CONTROL
 JV7137
 JV7137  NAD 83(2007)-  39 02 39.09393(N)    077 03 06.88008(W) AD(2002.00) 0
 JV7137  ELLIP H (02/10/07)  113.129  (m)                       GP(2002.00)    
 JV7137  ELLIP H (08/30/02)  113.134  (m)                       GP(       ) 4 2
 JV7137  NAD 83(1991)-  39 02 39.09367(N)    077 03 06.88021(W) AD(       ) 1
 JV7137  ELLIP H (01/11/94)  113.058  (m)                       GP(       ) 4 1
 JV7137
 JV7137.Superseded values are not recommended for survey control.
 JV7137
 JV7137.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7137.See file dsdata.pdf to determine how the superseded data were derived.
 JV7137
 JV7137_MARKER: DD = SURVEY DISK
 JV7137_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7137_STAMPING: T.S. 20345 MC
 JV7137_MARK LOGO: WSSC
 JV7137_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7137_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7137+STABILITY: SURFACE MOTION
 JV7137_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7137+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2010
 JV7137
 JV7137  HISTORY     - Date     Condition        Report By
 JV7137  HISTORY     - 1993     MONUMENTED       MSI
 JV7137  HISTORY     - 20020829 GOOD             INDIV
 JV7137  HISTORY     - 20030827 GOOD             URS
 JV7137  HISTORY     - 20050407 GOOD             USPSQD
 JV7137  HISTORY     - 20060618 GOOD             NGS
 JV7137  HISTORY     - 20090512 GOOD             JMTMD
 JV7137  HISTORY     - 20100920 GOOD             GPSSS
 JV7137
 JV7137                          STATION DESCRIPTION
 JV7137
 JV7137'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7137'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7137'1.6 MI (2.6 KM) NORTHEAST OF KENSINGTON.  TO REACH THE STATION FROM
 JV7137'THE INTERSECTION OF GEORGIA AVENUE (S.R. 97) AND THE CAPITAL BELTWAY
 JV7137'(I-495), PROCEED NORTH ON GEORGIA AVENUE FOR 2.2 MI (3.5 KM) TO THE
 JV7137'STATION ON THE RIGHT, NEAR THE PROPERTY OF NO. 11521 GEORGIA AVENUE.
 JV7137'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7137'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7137'T.S. 20345 MC. THE DISK IS LOCATED 48.5 FT (14.8 M) NORTHEAST OF
 JV7137'THE MEDIAN-CENTER ON GEORGIA AVENUE, 73.3 FT (22.3 M) NORTH OF THE
 JV7137'FEDERAL SAVINGS BANK SIGNPOST, 37.5 FT (11.4 M) WEST OF A STANDPIPE
 JV7137'ON A CONCRETE VENT, AND 14.1 FT (4.3 M) SOUTH OF THE SOUTH EDGE OF
 JV7137'THE SIDEWALK.
 JV7137
 JV7137                          STATION RECOVERY (2002)
 JV7137
 JV7137'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (APC)
 JV7137'STATION IS LOCATED ON A VACANT LOT AT 11521 GEORGIA AVENUE HOUSING
 JV7137'METRO VENTILATION GRATE AND EMERGENCY EXIT. STATION IS APPROXIMATELY
 JV7137'65 FEET NORTH OF METRO CONTROL SURVEY DISK 1989 B119Z.
 JV7137
 JV7137                          STATION RECOVERY (2003)
 JV7137
 JV7137'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 JV7137'RECOVERED IN GOOD CONDITION.
 JV7137
 JV7137                          STATION RECOVERY (2005)
 JV7137
 JV7137'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7137'RECOVERED IN GOOD CONDITION.
 JV7137
 JV7137                          STATION RECOVERY (2006)
 JV7137
 JV7137'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV7137'RECOVERED IN GOOD CONDITION.
 JV7137
 JV7137                          STATION RECOVERY (2009)
 JV7137
 JV7137'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 JV7137'FAIR SITE FOR GPS - TREES TO SOUTH
 JV7137'(X,Y,Z, NOT CHECKED)
 JV7137
 JV7137                          STATION RECOVERY (2010)
 JV7137
 JV7137'RECOVERY NOTE BY GPS SALES AND SERVICES 2010
 JV7137'RECOVERED BY TED, TOM AND JOEL OF SURVEY SURVICES OF MD, LLC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7138 ***********************************************************************
 JV7138  DESIGNATION -  20346
 JV7138  PID         -  JV7138
 JV7138  STATE/COUNTY-  MD/MONTGOMERY
 JV7138  COUNTRY     -  US
 JV7138  USGS QUAD   -  KENSINGTON (2016)
 JV7138
 JV7138                         *CURRENT SURVEY CONTROL
 JV7138  ______________________________________________________________________
 JV7138* NAD 83(2011) POSITION- 39 04 56.60609(N) 077 02 57.44763(W)   ADJUSTED
 JV7138* NAD 83(2011) ELLIP HT-    83.746 (meters)        (06/27/12)   ADJUSTED
 JV7138* NAD 83(2011) EPOCH   -  2010.00
 JV7138* NAVD 88 ORTHO HEIGHT -   115.7   (meters)      380.    (feet) GPS OBS
 JV7138  ______________________________________________________________________
 JV7138  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7138  GEOID HEIGHT    -        -32.240 (meters)                     GEOID93
 JV7138  GEOID HEIGHT    -        -31.883 (meters)                     GEOID18
 JV7138  NAD 83(2011) X  -  1,111,068.226 (meters)                     COMP
 JV7138  NAD 83(2011) Y  - -4,831,524.902 (meters)                     COMP
 JV7138  NAD 83(2011) Z  -  3,999,473.995 (meters)                     COMP
 JV7138  LAPLACE CORR    -         -3.68  (seconds)                    DEFLEC18
 JV7138
 JV7138  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7138  Standards:
 JV7138         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7138            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7138  -------------------------------------------------------------------
 JV7138  NETWORK    1.39   2.02           0.63   0.49   1.03      0.04311735
 JV7138  -------------------------------------------------------------------
 JV7138  Click here for local accuracies and other accuracy information.
 JV7138
 JV7138.The horizontal coordinates were established by GPS observations
 JV7138.and adjusted by the National Geodetic Survey in June 2012.
 JV7138
 JV7138.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7138.been affixed to the stable North American tectonic plate. See 
 JV7138.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7138
 JV7138.The horizontal coordinates are valid at the epoch date displayed above
 JV7138.which is a decimal equivalence of Year/Month/Day.
 JV7138
 JV7138.The orthometric height was determined by GPS observations and a
 JV7138.high-resolution geoid model.
 JV7138
 JV7138.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7138.GEOID18 height accuracy estimate available here.
 JV7138
 JV7138.Click photographs - Photos may exist for this station.
 JV7138
 JV7138.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7138
 JV7138.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7138
 JV7138.The ellipsoidal height was determined by GPS observations
 JV7138.and is referenced to NAD 83.
 JV7138
 JV7138. The following values were computed from the NAD 83(2011) position.
 JV7138
 JV7138;                    North         East     Units Scale Factor Converg.
 JV7138;SPC MD       -   157,153.634   395,735.240   MT  0.99995633   -0 01 51.4
 JV7138;SPC MD       -   515,594.88  1,298,341.37   sFT  0.99995633   -0 01 51.4
 JV7138;UTM  18      - 4,327,918.518   322,746.443   MT  0.99998688   -1 17 32.2
 JV7138
 JV7138!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7138!SPC MD       -   0.99998686  x   0.99995633  =   0.99994319
 JV7138!UTM  18      -   0.99998686  x   0.99998688  =   0.99997374
 JV7138
 JV7138_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2274627918(NAD 83)
 JV7138
 JV7138                          SUPERSEDED SURVEY CONTROL
 JV7138
 JV7138  NAD 83(2007)-  39 04 56.60607(N)    077 02 57.44853(W) AD(2002.00) 0
 JV7138  ELLIP H (02/10/07)   83.793  (m)                       GP(2002.00)    
 JV7138  ELLIP H (08/30/02)   83.800  (m)                       GP(       ) 4 2
 JV7138  NAD 83(1991)-  39 04 56.60574(N)    077 02 57.44830(W) AD(       ) 1
 JV7138  ELLIP H (01/11/94)   83.729  (m)                       GP(       ) 4 1
 JV7138
 JV7138.Superseded values are not recommended for survey control.
 JV7138
 JV7138.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7138.See file dsdata.pdf to determine how the superseded data were derived.
 JV7138
 JV7138_MARKER: DD = SURVEY DISK
 JV7138_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7138_STAMPING: T.S. 20346 MC
 JV7138_MARK LOGO: WSSC
 JV7138_PROJECTION: RECESSED 15 CENTIMETERS
 JV7138_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7138_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7138+STABILITY: SURFACE MOTION
 JV7138_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7138+SATELLITE: SATELLITE OBSERVATIONS - September 27, 2020
 JV7138
 JV7138  HISTORY     - Date     Condition        Report By
 JV7138  HISTORY     - 1993     MONUMENTED       MSI
 JV7138  HISTORY     - 19960310 GOOD             MSI
 JV7138  HISTORY     - 19970624 GOOD             DMW
 JV7138  HISTORY     - 20020829 GOOD             INDIV
 JV7138  HISTORY     - 20030827 GOOD             URS
 JV7138  HISTORY     - 20050407 GOOD             USPSQD
 JV7138  HISTORY     - 20080821 GOOD             NGS
 JV7138  HISTORY     - 20200927 GOOD             PROFLN
 JV7138
 JV7138                          STATION DESCRIPTION
 JV7138
 JV7138'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7138'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7138'5.1 MI (8.2 KM) EAST OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7138'FROM THE INTERSECTION OF BEL PRE ROAD AND LAYHILL ROAD (S.R. 182),
 JV7138'PROCEED SOUTH ON LAYHILL ROAD FOR 0.45 MI (0.72 KM) TO THE
 JV7138'INTERSECTION WITH POST LANE.  TURN RIGHT AND TRAVEL WEST ON POST LANE
 JV7138'FOR 0.05 MI (0.08 KM) TO THE INTERSECTION WITH NORTH GATE DRIVE. TURN
 JV7138'LEFT AND TRAVEL SOUTH ON NORTH GATE DRIVE FOR 0.1 MI (0.2 KM) TO THE
 JV7138'STATION THE LEFT, IN FRONT OF HOUSE NO. 13704.
 JV7138'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7138'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7138'T.S. 20346 MC. THE DISK IS LOCATED 12.5 FT (3.8 M) SOUTH OF THE
 JV7138'CENTERLINE OF NORTH GATE DRIVE, 25.0 FT (7.6 M) EAST OF MAILBOX NO.
 JV7138'13704, AND 55.5 FT (16.9 M) SOUTHWEST OF A FIRE HYDRANT.
 JV7138
 JV7138                          STATION RECOVERY (1996)
 JV7138
 JV7138'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1996 (JC)
 JV7138'RECOVERED AS DESCRIBED.
 JV7138
 JV7138                          STATION RECOVERY (1997)
 JV7138
 JV7138'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV7138'RECOVERED AS DESCRIBED.
 JV7138
 JV7138                          STATION RECOVERY (2002)
 JV7138
 JV7138'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (APC)
 JV7138'STATION SURVEY DISK IS NOW ABOUT THREE INCHES BELOW LEVEL OF
 JV7138'SURROUNDING LAWN. LOCATION NOW MARKED WITH A CARSONITE WITNESS POST.
 JV7138
 JV7138                          STATION RECOVERY (2003)
 JV7138
 JV7138'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 JV7138'RECOVERED IN GOOD CONDITION.
 JV7138
 JV7138                          STATION RECOVERY (2005)
 JV7138
 JV7138'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7138'RECOVERED IN GOOD CONDITION.
 JV7138
 JV7138                          STATION RECOVERY (2008)
 JV7138
 JV7138'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7138'RECOVERED IN GOOD CONDITION.
 JV7138
 JV7138                          STATION RECOVERY (2020)
 JV7138
 JV7138'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV7138'RECOVERED AS DESCRIBED AND PLACED UNDER A RECTANGULAR VALVE BOX FOR
 JV7138'ACCESS.  THE MARK IS 6 INCH (15 CM) BELOW SURROUNDING GROUND AND LID
 JV7138'OF THE BOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7139 ***********************************************************************
 JV7139  DESIGNATION -  20347
 JV7139  PID         -  JV7139
 JV7139  STATE/COUNTY-  MD/MONTGOMERY
 JV7139  COUNTRY     -  US
 JV7139  USGS QUAD   -  KENSINGTON (2016)
 JV7139
 JV7139                         *CURRENT SURVEY CONTROL
 JV7139  ______________________________________________________________________
 JV7139* NAD 83(2011) POSITION- 39 06 54.71927(N) 077 03 04.41218(W)   ADJUSTED
 JV7139* NAD 83(2011) ELLIP HT-   108.140 (meters)        (06/27/12)   ADJUSTED
 JV7139* NAD 83(2011) EPOCH   -  2010.00
 JV7139* NAVD 88 ORTHO HEIGHT -   140.0   (meters)      459.    (feet) GPS OBS
 JV7139  ______________________________________________________________________
 JV7139  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7139  GEOID HEIGHT    -        -32.220 (meters)                     GEOID93
 JV7139  GEOID HEIGHT    -        -31.861 (meters)                     GEOID18
 JV7139  NAD 83(2011) X  -  1,110,394.587 (meters)                     COMP
 JV7139  NAD 83(2011) Y  - -4,829,342.135 (meters)                     COMP
 JV7139  NAD 83(2011) Z  -  4,002,316.136 (meters)                     COMP
 JV7139  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 JV7139
 JV7139  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7139  Standards:
 JV7139         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7139            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7139  -------------------------------------------------------------------
 JV7139  NETWORK    1.17   2.20           0.49   0.47   1.12      0.02217235
 JV7139  -------------------------------------------------------------------
 JV7139  Click here for local accuracies and other accuracy information.
 JV7139
 JV7139.The horizontal coordinates were established by GPS observations
 JV7139.and adjusted by the National Geodetic Survey in June 2012.
 JV7139
 JV7139.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7139.been affixed to the stable North American tectonic plate. See 
 JV7139.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7139
 JV7139.The horizontal coordinates are valid at the epoch date displayed above
 JV7139.which is a decimal equivalence of Year/Month/Day.
 JV7139
 JV7139.The orthometric height was determined by GPS observations and a
 JV7139.high-resolution geoid model.
 JV7139
 JV7139.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7139.GEOID18 height accuracy estimate available here.
 JV7139
 JV7139.Click photographs - Photos may exist for this station.
 JV7139
 JV7139.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7139
 JV7139.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7139
 JV7139.The ellipsoidal height was determined by GPS observations
 JV7139.and is referenced to NAD 83.
 JV7139
 JV7139. The following values were computed from the NAD 83(2011) position.
 JV7139
 JV7139;                    North         East     Units Scale Factor Converg.
 JV7139;SPC MD       -   160,795.963   395,569.899   MT  0.99995855   -0 01 55.7
 JV7139;SPC MD       -   527,544.76  1,297,798.91   sFT  0.99995855   -0 01 55.7
 JV7139;UTM  18      - 4,331,563.713   322,661.346   MT  0.99998725   -1 17 39.9
 JV7139
 JV7139!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7139!SPC MD       -   0.99998303  x   0.99995855  =   0.99994158
 JV7139!UTM  18      -   0.99998303  x   0.99998725  =   0.99997028
 JV7139
 JV7139_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2266131563(NAD 83)
 JV7139
 JV7139                          SUPERSEDED SURVEY CONTROL
 JV7139
 JV7139  NAD 83(2007)-  39 06 54.71941(N)    077 03 04.41303(W) AD(2002.00) 0
 JV7139  ELLIP H (02/10/07)  108.174  (m)                       GP(2002.00)    
 JV7139  ELLIP H (08/30/02)  108.182  (m)                       GP(       ) 4 2
 JV7139  NAD 83(1991)-  39 06 54.71904(N)    077 03 04.41292(W) AD(       ) 1
 JV7139  ELLIP H (01/11/94)  108.107  (m)                       GP(       ) 4 1
 JV7139
 JV7139.Superseded values are not recommended for survey control.
 JV7139
 JV7139.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7139.See file dsdata.pdf to determine how the superseded data were derived.
 JV7139
 JV7139_STAMPING: T.S. 20347 MC
 JV7139_MARK LOGO: WSSC
 JV7139_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7139+SATELLITE: SATELLITE OBSERVATIONS - November 28, 2008
 JV7139
 JV7139  HISTORY     - Date     Condition        Report By
 JV7139  HISTORY     - 1993     MONUMENTED       MSI
 JV7139  HISTORY     - 20011025 GOOD             USPSQD
 JV7139  HISTORY     - 20020829 GOOD             INDIV
 JV7139  HISTORY     - 20080821 GOOD             NGS
 JV7139  HISTORY     - 20081128 GOOD             NGS
 JV7139  HISTORY     - 20170808 MARK NOT FOUND   NGS
 JV7139
 JV7139                          STATION DESCRIPTION
 JV7139
 JV7139'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7139'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7139'5.7 MI (9.2 KM) NORTHEAST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7139'STATION FROM THE INTERSECTION OF GEORGIA AVENUE (S.R. 97) AND NORBECK
 JV7139'ROAD (S.R. 28), PROCEED EAST ON NORBECK ROAD FOR 1.5 MI (2.4 KM) TO
 JV7139'THE INTERSECTION WITH TWIN VALLEY LANE.  TURN RIGHT AND TRAVEL
 JV7139'APPROXIAMATELY 150 FT (45.7 M) SOUTH ALONG TWIN VALLEY LANE TO THE
 JV7139'STATION ON THE LEFT.
 JV7139'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7139'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7139'T.S. 20347 MC. THE DISK IS LOCATED 6.9 FT (2.1 M) EAST OF TWIN
 JV7139'VALLEY LANE (EDGE OF PAVEMENT), 6.5 FT (2.0 M) WEST OF A FENCE LINE,
 JV7139'44.5 FT (13.6 M) NORTHEAST OF THE NORTH END OF A CONCRETE CULVERT,
 JV7139'AND 31.5 FT (9.6 M) EAST OF A SIGN READING NO DUMPING.
 JV7139
 JV7139                          STATION RECOVERY (2001)
 JV7139
 JV7139'RECOVERY NOTE BY US POWER SQUADRON 2001 (BAS)
 JV7139'RECOVERED IN GOOD CONDITION.
 JV7139
 JV7139                          STATION RECOVERY (2002)
 JV7139
 JV7139'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (APC)
 JV7139'STATION SURVEY DISK IS NOW APPROXIMATELY THREE INCHES BELOW GROUND
 JV7139'LEVEL. STATION IS APPROXIMATELY NINE FEET SOUTHWEST OF A CARSONITE
 JV7139'WITNESS POST. LOCATION IS MARKED BY A PAINTED LABEL AT THE EDGE OF THE
 JV7139'PAVEMENT.
 JV7139
 JV7139                          STATION RECOVERY (2008)
 JV7139
 JV7139'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7139'THIS STATION HAS CONSIDERABLE SATELLITE BLOCKAGES FROM HEAVY TREE
 JV7139'COVER TO THE WEST.
 JV7139
 JV7139                          STATION RECOVERY (2008)
 JV7139
 JV7139'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7139'TREES TO THE SW MAY CAUSE SATELLITE SIGNAL BLOCKAGE.
 JV7139
 JV7139                          STATION RECOVERY (2017)
 JV7139
 JV7139'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV7139'UNABLE TO FIND AFTER A THOROUGH SEARCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7140 ***********************************************************************
 JV7140  DESIGNATION -  20348
 JV7140  PID         -  JV7140
 JV7140  STATE/COUNTY-  MD/MONTGOMERY
 JV7140  COUNTRY     -  US
 JV7140  USGS QUAD   -  SANDY SPRING (2016)
 JV7140
 JV7140                         *CURRENT SURVEY CONTROL
 JV7140  ______________________________________________________________________
 JV7140* NAD 83(2011) POSITION- 39 07 55.20010(N) 077 05 48.19335(W)   ADJUSTED
 JV7140* NAD 83(2011) ELLIP HT-    85.474 (meters)        (06/27/12)   ADJUSTED
 JV7140* NAD 83(2011) EPOCH   -  2010.00
 JV7140* NAVD 88 ORTHO HEIGHT -   117.3   (meters)      385.    (feet) GPS OBS
 JV7140  ______________________________________________________________________
 JV7140  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7140  GEOID HEIGHT    -        -32.140 (meters)                     GEOID93
 JV7140  GEOID HEIGHT    -        -31.782 (meters)                     GEOID18
 JV7140  NAD 83(2011) X  -  1,106,292.841 (meters)                     COMP
 JV7140  NAD 83(2011) Y  - -4,829,057.978 (meters)                     COMP
 JV7140  NAD 83(2011) Z  -  4,003,748.795 (meters)                     COMP
 JV7140  LAPLACE CORR    -         -2.34  (seconds)                    DEFLEC18
 JV7140
 JV7140  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7140  Standards:
 JV7140         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7140            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7140  -------------------------------------------------------------------
 JV7140  NETWORK    1.27   2.59           0.53   0.51   1.32     -0.06682204
 JV7140  -------------------------------------------------------------------
 JV7140  Click here for local accuracies and other accuracy information.
 JV7140
 JV7140.The horizontal coordinates were established by GPS observations
 JV7140.and adjusted by the National Geodetic Survey in June 2012.
 JV7140
 JV7140.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7140.been affixed to the stable North American tectonic plate. See 
 JV7140.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7140
 JV7140.The horizontal coordinates are valid at the epoch date displayed above
 JV7140.which is a decimal equivalence of Year/Month/Day.
 JV7140
 JV7140.The orthometric height was determined by GPS observations and a
 JV7140.high-resolution geoid model.
 JV7140
 JV7140.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7140.GEOID18 height accuracy estimate available here.
 JV7140
 JV7140.Click photographs - Photos may exist for this station.
 JV7140
 JV7140.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7140
 JV7140.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7140
 JV7140.The ellipsoidal height was determined by GPS observations
 JV7140.and is referenced to NAD 83.
 JV7140
 JV7140. The following values were computed from the NAD 83(2011) position.
 JV7140
 JV7140;                    North         East     Units Scale Factor Converg.
 JV7140;SPC MD       -   162,664.200   391,637.389   MT  0.99995982   -0 03 38.5
 JV7140;SPC MD       -   533,674.13  1,284,897.00   sFT  0.99995982   -0 03 38.5
 JV7140;UTM  18      - 4,333,518.218   318,770.815   MT  1.00000443   -1 19 25.0
 JV7140
 JV7140!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7140!SPC MD       -   0.99998659  x   0.99995982  =   0.99994641
 JV7140!UTM  18      -   0.99998659  x   1.00000443  =   0.99999102
 JV7140
 JV7140_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1877033518(NAD 83)
 JV7140
 JV7140                          SUPERSEDED SURVEY CONTROL
 JV7140
 JV7140  NAD 83(2007)-  39 07 55.20023(N)    077 05 48.19416(W) AD(2002.00) 0
 JV7140  ELLIP H (02/10/07)   85.507  (m)                       GP(2002.00)    
 JV7140  ELLIP H (08/30/02)   85.518  (m)                       GP(       ) 4 2
 JV7140  NAD 83(1991)-  39 07 55.19963(N)    077 05 48.19404(W) AD(       ) 1
 JV7140  ELLIP H (01/11/94)   85.443  (m)                       GP(       ) 4 1
 JV7140
 JV7140.Superseded values are not recommended for survey control.
 JV7140
 JV7140.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7140.See file dsdata.pdf to determine how the superseded data were derived.
 JV7140
 JV7140_MARKER: DD = SURVEY DISK
 JV7140_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7140_STAMPING: T.S. 20348 MC
 JV7140_MARK LOGO: WSSC
 JV7140_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7140_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7140+STABILITY: SURFACE MOTION
 JV7140_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7140+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2009
 JV7140
 JV7140  HISTORY     - Date     Condition        Report By
 JV7140  HISTORY     - 1993     MONUMENTED       MSI
 JV7140  HISTORY     - 20021017 GOOD             POWELL
 JV7140  HISTORY     - 20050407 GOOD             USPSQD
 JV7140  HISTORY     - 20091215 GOOD             NGS
 JV7140
 JV7140                          STATION DESCRIPTION
 JV7140
 JV7140'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7140'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7140'4.2 MI (6.8 KM) NORTHEAST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7140'STATION FROM THE INTERSECTION OF GEORGIA AVENUE (S.R. 97) AND EMORY
 JV7140'LANE, PROCEED WEST ON EMORY LANE FOR 0.4 MI (0.6 KM) TO THE
 JV7140'INTERSECTION WITH CASHELL ROAD.  TURN RIGHT AND TRAVEL NORTH ON
 JV7140'CASHELL ROAD FOR 0.8 MI (1.3 KM) TO THE INTERSECTION WITH CHERRY
 JV7140'VALLEY DRIVE.  TURN LEFT AND TRAVEL WEST ON CHERRY VALLEY DRIVE FOR
 JV7140'0.7 MI (1.1 KM) TO THE STATION ON THE RIGHT,IN FRONT OF HOUSE NO.
 JV7140'4809.
 JV7140'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7140'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7140'T.S. 20348 MC. THE DISK IS LOCATED 7.9 FT (2.4 M) NORTH OF CHERRY
 JV7140'VALLEY DRIVE (EDGE OF PAVEMENT), 11.0 FT (3.4 M) WEST OF THE DRIVEWAY
 JV7140'TO HOUSE NO. 4809, AND 23.6 FT (7.2 M) EAST OF A MANHOLE.
 JV7140
 JV7140                          STATION RECOVERY (2002)
 JV7140
 JV7140'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7140'RECOVERED IN GOOD CONDITION.
 JV7140
 JV7140                          STATION RECOVERY (2005)
 JV7140
 JV7140'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7140'RECOVERED IN GOOD CONDITION.
 JV7140
 JV7140                          STATION RECOVERY (2009)
 JV7140
 JV7140'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV7140'MARK IS DIRECTLY OPPOSITE THE DRIVEWAY TO HOUSE NUMBER 4808 AND IS NOW
 JV7140'RECESSED 6.4 CM (0.2 FT).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7141 ***********************************************************************
 JV7141  DESIGNATION -  20349
 JV7141  PID         -  JV7141
 JV7141  STATE/COUNTY-  MD/MONTGOMERY
 JV7141  COUNTRY     -  US
 JV7141  USGS QUAD   -  SANDY SPRING (2016)
 JV7141
 JV7141                         *CURRENT SURVEY CONTROL
 JV7141  ______________________________________________________________________
 JV7141* NAD 83(2011) POSITION- 39 10 38.56241(N) 077 06 03.14627(W)   ADJUSTED
 JV7141* NAD 83(2011) ELLIP HT-   126.587 (meters)        (06/27/12)   ADJUSTED
 JV7141* NAD 83(2011) EPOCH   -  2010.00
 JV7141* NAVD 88 ORTHO HEIGHT -   158.4   (meters)      520.    (feet) GPS OBS
 JV7141  ______________________________________________________________________
 JV7141  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7141  GEOID HEIGHT    -        -32.130 (meters)                     GEOID93
 JV7141  GEOID HEIGHT    -        -31.778 (meters)                     GEOID18
 JV7141  NAD 83(2011) X  -  1,105,239.761 (meters)                     COMP
 JV7141  NAD 83(2011) Y  - -4,826,068.488 (meters)                     COMP
 JV7141  NAD 83(2011) Z  -  4,007,681.384 (meters)                     COMP
 JV7141  LAPLACE CORR    -         -1.84  (seconds)                    DEFLEC18
 JV7141
 JV7141  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7141  Standards:
 JV7141         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7141            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7141  -------------------------------------------------------------------
 JV7141  NETWORK    3.67   4.78           1.70   1.22   2.44     -0.05540378
 JV7141  -------------------------------------------------------------------
 JV7141  Click here for local accuracies and other accuracy information.
 JV7141
 JV7141.The horizontal coordinates were established by GPS observations
 JV7141.and adjusted by the National Geodetic Survey in June 2012.
 JV7141
 JV7141.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7141.been affixed to the stable North American tectonic plate. See 
 JV7141.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7141
 JV7141.The horizontal coordinates are valid at the epoch date displayed above
 JV7141.which is a decimal equivalence of Year/Month/Day.
 JV7141
 JV7141.The orthometric height was determined by GPS observations and a
 JV7141.high-resolution geoid model.
 JV7141
 JV7141.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7141.GEOID18 height accuracy estimate available here.
 JV7141
 JV7141.Click photographs - Photos may exist for this station.
 JV7141
 JV7141.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7141
 JV7141.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7141
 JV7141.The ellipsoidal height was determined by GPS observations
 JV7141.and is referenced to NAD 83.
 JV7141
 JV7141. The following values were computed from the NAD 83(2011) position.
 JV7141
 JV7141;                    North         East     Units Scale Factor Converg.
 JV7141;SPC MD       -   167,702.233   391,283.830   MT  0.99996366   -0 03 47.9
 JV7141;SPC MD       -   550,203.08  1,283,737.03   sFT  0.99996366   -0 03 47.9
 JV7141;UTM  18      - 4,338,563.042   318,528.427   MT  1.00000550   -1 19 39.1
 JV7141
 JV7141!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7141!SPC MD       -   0.99998014  x   0.99996366  =   0.99994380
 JV7141!UTM  18      -   0.99998014  x   1.00000550  =   0.99998564
 JV7141
 JV7141_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1852838563(NAD 83)
 JV7141
 JV7141                          SUPERSEDED SURVEY CONTROL
 JV7141
 JV7141  NAD 83(2007)-  39 10 38.56300(N)    077 06 03.14705(W) AD(2002.00) 0
 JV7141  ELLIP H (02/10/07)  126.642  (m)                       GP(2002.00)    
 JV7141  ELLIP H (08/30/02)  126.646  (m)                       GP(       ) 4 2
 JV7141  NAD 83(1991)-  39 10 38.56243(N)    077 06 03.14677(W) AD(       ) 1
 JV7141  ELLIP H (01/11/94)  126.580  (m)                       GP(       ) 4 1
 JV7141
 JV7141.Superseded values are not recommended for survey control.
 JV7141
 JV7141.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7141.See file dsdata.pdf to determine how the superseded data were derived.
 JV7141
 JV7141_MARKER: DD = SURVEY DISK
 JV7141_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7141_STAMPING: T.S. 20349 MC
 JV7141_MARK LOGO: WSSC
 JV7141_PROJECTION: FLUSH
 JV7141_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7141_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7141+STABILITY: SURFACE MOTION
 JV7141_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7141+SATELLITE: SATELLITE OBSERVATIONS - September 22, 2022
 JV7141
 JV7141  HISTORY     - Date     Condition        Report By
 JV7141  HISTORY     - 1993     MONUMENTED       MSI
 JV7141  HISTORY     - 19940401 GOOD             MSI
 JV7141  HISTORY     - 20011116 GOOD             DMW
 JV7141  HISTORY     - 20050105 GOOD             URS
 JV7141  HISTORY     - 20220922 GOOD             MDSHA
 JV7141
 JV7141                          STATION DESCRIPTION
 JV7141
 JV7141'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7141'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7141'3.0 MI (4.8 KM) SOUTHEAST OF THE TOWN OF LAYTONSVILLE.  TO REACH THE
 JV7141'STATION FROM THE INTERSECTION OF GEORGIA AVENUE (S.R. 97) AND
 JV7141'OLNEY-LAYTONSVILLE ROAD (S.R. 108), PROCEED NORTHWEST ON
 JV7141'OLNEY-LAYTONSVILLE ROAD FOR 2.5 MI (4.0 KM) TO THE INTERSECTION WITH
 JV7141'ZION ROAD. CONTINUE ON OLNEY-LAYTONSVILLE ROAD FOR APPROXIMATELY 200
 JV7141'FT (61.0 M) TO THE STATION ON THE RIGHT.
 JV7141'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7141'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7141'T.S. 20349 MC. THE DISK IS LOCATED 8.5 FT (2.6 M) NORTHEAST OF
 JV7141'OLNEY-LAYTONSVILLE ROAD (EDGE OF PAVEMENT), 4.6 FT (1.4 M) SOUTHWEST
 JV7141'OF A WOODEN FENCE, 74.0 FT (22.6 M) NORTHWEST OF PEPCO POWER POLE NO.
 JV7141'771489-3541.
 JV7141
 JV7141                          STATION RECOVERY (1994)
 JV7141
 JV7141'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 JV7141'RECOVERED AS DESCRIBED BY MEASUREMENT SCIENCE, INC. (1994).
 JV7141
 JV7141                          STATION RECOVERY (2001)
 JV7141
 JV7141'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV7141'RECOVERY NOTE
 JV7141'STATION FOUND IN GOOD CONDITION 11/2001
 JV7141
 JV7141                          STATION RECOVERY (2005)
 JV7141
 JV7141'RECOVERY NOTE BY URS COMPANY 2005 (JP)
 JV7141'RECOVERED IN GOOD CONDITION.
 JV7141
 JV7141                          STATION RECOVERY (2022)
 JV7141
 JV7141'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EOF)
 JV7141'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7142 ***********************************************************************
 JV7142  DESIGNATION -  20350
 JV7142  PID         -  JV7142
 JV7142  STATE/COUNTY-  MD/MONTGOMERY
 JV7142  COUNTRY     -  US
 JV7142  USGS QUAD   -  SANDY SPRING (2016)
 JV7142
 JV7142                         *CURRENT SURVEY CONTROL
 JV7142  ______________________________________________________________________
 JV7142* NAD 83(2011) POSITION- 39 07 51.50268(N) 077 04 43.14274(W)   ADJUSTED
 JV7142* NAD 83(2011) ELLIP HT-   105.778 (meters)        (06/27/12)   ADJUSTED
 JV7142* NAD 83(2011) EPOCH   -  2010.00
 JV7142* NAVD 88 ORTHO HEIGHT -   137.6   (meters)      451.    (feet) GPS OBS
 JV7142  ______________________________________________________________________
 JV7142  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7142  GEOID HEIGHT    -        -32.160 (meters)                     GEOID93
 JV7142  GEOID HEIGHT    -        -31.806 (meters)                     GEOID18
 JV7142  NAD 83(2011) X  -  1,107,835.360 (meters)                     COMP
 JV7142  NAD 83(2011) Y  - -4,828,794.331 (meters)                     COMP
 JV7142  NAD 83(2011) Z  -  4,003,673.161 (meters)                     COMP
 JV7142  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 JV7142
 JV7142  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7142  Standards:
 JV7142         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7142            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7142  -------------------------------------------------------------------
 JV7142  NETWORK    1.21   2.41           0.51   0.48   1.23      0.00657470
 JV7142  -------------------------------------------------------------------
 JV7142  Click here for local accuracies and other accuracy information.
 JV7142
 JV7142.The horizontal coordinates were established by GPS observations
 JV7142.and adjusted by the National Geodetic Survey in June 2012.
 JV7142
 JV7142.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7142.been affixed to the stable North American tectonic plate. See 
 JV7142.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7142
 JV7142.The horizontal coordinates are valid at the epoch date displayed above
 JV7142.which is a decimal equivalence of Year/Month/Day.
 JV7142
 JV7142.The orthometric height was determined by GPS observations and a
 JV7142.high-resolution geoid model.
 JV7142
 JV7142.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7142.GEOID18 height accuracy estimate available here.
 JV7142
 JV7142.Click photographs - Photos may exist for this station.
 JV7142
 JV7142.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7142
 JV7142.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7142
 JV7142.The ellipsoidal height was determined by GPS observations
 JV7142.and is referenced to NAD 83.
 JV7142
 JV7142. The following values were computed from the NAD 83(2011) position.
 JV7142
 JV7142;                    North         East     Units Scale Factor Converg.
 JV7142;SPC MD       -   162,548.682   393,199.621   MT  0.99995974   -0 02 57.7
 JV7142;SPC MD       -   533,295.13  1,290,022.42   sFT  0.99995974   -0 02 57.7
 JV7142;UTM  18      - 4,333,368.291   320,330.185   MT  0.99999750   -1 18 43.8
 JV7142
 JV7142!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7142!SPC MD       -   0.99998340  x   0.99995974  =   0.99994315
 JV7142!UTM  18      -   0.99998340  x   0.99999750  =   0.99998090
 JV7142
 JV7142_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2033033368(NAD 83)
 JV7142
 JV7142                          SUPERSEDED SURVEY CONTROL
 JV7142
 JV7142  NAD 83(2007)-  39 07 51.50280(N)    077 04 43.14356(W) AD(2002.00) 0
 JV7142  ELLIP H (02/10/07)  105.812  (m)                       GP(2002.00)    
 JV7142  ELLIP H (08/30/02)  105.822  (m)                       GP(       ) 4 2
 JV7142  NAD 83(1991)-  39 07 51.50231(N)    077 04 43.14352(W) AD(       ) 1
 JV7142  ELLIP H (01/11/94)  105.746  (m)                       GP(       ) 4 1
 JV7142
 JV7142.Superseded values are not recommended for survey control.
 JV7142
 JV7142.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7142.See file dsdata.pdf to determine how the superseded data were derived.
 JV7142
 JV7142_MARKER: DD = SURVEY DISK
 JV7142_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7142_STAMPING: T.S. 20350 MC
 JV7142_MARK LOGO: WSSC
 JV7142_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7142_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7142+STABILITY: SURFACE MOTION
 JV7142_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7142+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2008
 JV7142
 JV7142  HISTORY     - Date     Condition        Report By
 JV7142  HISTORY     - 1993     MONUMENTED       MSI
 JV7142  HISTORY     - 20080920 GOOD             NGS
 JV7142
 JV7142                          STATION DESCRIPTION
 JV7142
 JV7142'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7142'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7142'4.8 MI (7.7 KM) NORTHEAST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7142'STATION FROM THE INTERSECTION OF GEORGIA AVENUE (S.R. 97) AND EMORY
 JV7142'LANE, PROCEED WEST ON EMORY LANE FOR 0.4 MI (0.6 KM) TO ENTRANCE OF
 JV7142'PEPCO SUB-STATION NO. 158. TURN RIGHT AND PROCEED NORTH ON A PAVED
 JV7142'ACCESS ROAD, PASSING THROUGH A GATE, FOR 0.2 MI (0.3 KM) TO THE
 JV7142'STATION ON THE LEFT.
 JV7142'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7142'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7142'T.S. 20350 MC. THE DISK IS LOCATED 18.5 FT (5.6 M) NORTHWEST OF A
 JV7142'PIPE FENCE, 41.5 FT (12.6 M) SOUTHWEST OF A CHAINLINK FENCE, 20.8 FT
 JV7142'(6.3 M) SOUTHWEST OF A MANHOLE.
 JV7142
 JV7142                          STATION RECOVERY (2008)
 JV7142
 JV7142'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7142'TREES TO THE SOUTH COULD CAUSE SIGNIFICANT GPS SIGNAL BLOCKAGE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7143 ***********************************************************************
 JV7143  DESIGNATION -  20351
 JV7143  PID         -  JV7143
 JV7143  STATE/COUNTY-  MD/MONTGOMERY
 JV7143  COUNTRY     -  US
 JV7143  USGS QUAD   -  SANDY SPRING (2016)
 JV7143
 JV7143                         *CURRENT SURVEY CONTROL
 JV7143  ______________________________________________________________________
 JV7143* NAD 83(2011) POSITION- 39 10 37.63241(N) 077 04 32.02652(W)   ADJUSTED
 JV7143* NAD 83(2011) ELLIP HT-    99.363 (meters)        (06/27/12)   ADJUSTED
 JV7143* NAD 83(2011) EPOCH   -  2010.00
 JV7143* NAVD 88 ORTHO HEIGHT -   131.2   (meters)      430.    (feet) GPS OBS
 JV7143  ______________________________________________________________________
 JV7143  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7143  GEOID HEIGHT    -        -32.160 (meters)                     GEOID93
 JV7143  GEOID HEIGHT    -        -31.807 (meters)                     GEOID18
 JV7143  NAD 83(2011) X  -  1,107,370.954 (meters)                     COMP
 JV7143  NAD 83(2011) Y  - -4,825,576.855 (meters)                     COMP
 JV7143  NAD 83(2011) Z  -  4,007,641.953 (meters)                     COMP
 JV7143  LAPLACE CORR    -         -2.63  (seconds)                    DEFLEC18
 JV7143
 JV7143  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7143  Standards:
 JV7143         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7143            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7143  -------------------------------------------------------------------
 JV7143  NETWORK    1.34   2.63           0.59   0.50   1.34      0.02820906
 JV7143  -------------------------------------------------------------------
 JV7143  Click here for local accuracies and other accuracy information.
 JV7143
 JV7143.The horizontal coordinates were established by GPS observations
 JV7143.and adjusted by the National Geodetic Survey in June 2012.
 JV7143
 JV7143.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7143.been affixed to the stable North American tectonic plate. See 
 JV7143.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7143
 JV7143.The horizontal coordinates are valid at the epoch date displayed above
 JV7143.which is a decimal equivalence of Year/Month/Day.
 JV7143
 JV7143.The orthometric height was determined by GPS observations and a
 JV7143.high-resolution geoid model.
 JV7143
 JV7143.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7143.GEOID18 height accuracy estimate available here.
 JV7143
 JV7143.Click photographs - Photos may exist for this station.
 JV7143
 JV7143.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7143
 JV7143.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7143
 JV7143.The ellipsoidal height was determined by GPS observations
 JV7143.and is referenced to NAD 83.
 JV7143
 JV7143. The following values were computed from the NAD 83(2011) position.
 JV7143
 JV7143;                    North         East     Units Scale Factor Converg.
 JV7143;SPC MD       -   167,671.441   393,470.845   MT  0.99996364   -0 02 50.7
 JV7143;SPC MD       -   550,102.05  1,290,912.26   sFT  0.99996364   -0 02 50.7
 JV7143;UTM  18      - 4,338,484.004   320,714.312   MT  0.99999579   -1 18 41.5
 JV7143
 JV7143!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7143!SPC MD       -   0.99998441  x   0.99996364  =   0.99994805
 JV7143!UTM  18      -   0.99998441  x   0.99999579  =   0.99998020
 JV7143
 JV7143_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2071438484(NAD 83)
 JV7143
 JV7143                          SUPERSEDED SURVEY CONTROL
 JV7143
 JV7143  NAD 83(2007)-  39 10 37.63246(N)    077 04 32.02734(W) AD(2002.00) 0
 JV7143  ELLIP H (02/10/07)   99.400  (m)                       GP(2002.00)    
 JV7143  ELLIP H (08/30/02)   99.405  (m)                       GP(       ) 4 2
 JV7143  NAD 83(1991)-  39 10 37.63196(N)    077 04 32.02716(W) AD(       ) 1
 JV7143  ELLIP H (01/11/94)   99.334  (m)                       GP(       ) 4 1
 JV7143
 JV7143.Superseded values are not recommended for survey control.
 JV7143
 JV7143.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7143.See file dsdata.pdf to determine how the superseded data were derived.
 JV7143
 JV7143_MARKER: DD = SURVEY DISK
 JV7143_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7143_STAMPING: T.S. 20351 MC
 JV7143_MARK LOGO: WSSC
 JV7143_PROJECTION: FLUSH
 JV7143_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7143_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7143+STABILITY: SURFACE MOTION
 JV7143_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7143+SATELLITE: SATELLITE OBSERVATIONS - March 22, 2022
 JV7143
 JV7143  HISTORY     - Date     Condition        Report By
 JV7143  HISTORY     - 1993     MONUMENTED       MSI
 JV7143  HISTORY     - 20011026 GOOD             USPSQD
 JV7143  HISTORY     - 20090512 GOOD             JMTMD
 JV7143  HISTORY     - 20141005 GOOD             BASE9
 JV7143  HISTORY     - 20220322 GOOD             NGS
 JV7143
 JV7143                          STATION DESCRIPTION
 JV7143
 JV7143'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7143'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7143'0.9 MI (1.4 KM) WEST OF THE TOWN OF BROOKEVILLE.  TO REACH THE
 JV7143'STATION FROM THE INTERSECTION OF GEORGIA AVENUE (S.R. 97) AND
 JV7143'OLNEY-LAYTONSVILLE ROAD (S.R. 108), PROCEED NORTHWEST ON
 JV7143'OLNEY-LAYTONSVILLE ROAD FOR 1.3 MI (2.1 KM) TO THE INTERSECTION WITH
 JV7143'OLNEY MILL ROAD.  TURN RIGHT AND TRAVEL NORTHEAST ON OLNEY MILL ROAD
 JV7143'FOR 0.8 MI (1.3 KM) TO THE INTERSECTION WITH CHARLINE MANOR ROAD.
 JV7143'TURN LEFT AND TRAVEL NORTH ON CHARLINE MANOR ROAD FOR 0.25 MI
 JV7143'(0.40 KM) TO THE STATION ON THE LEFT.
 JV7143'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7143'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7143'T.S. 20351 MC. THE DISK IS LOCATED 47.0 FT (14.3 M) WEST OF THE
 JV7143'CENTER LINE OF CHARLINE MANOR ROAD, 64.1 FT (19.5 M) SOUTH OF A SIGN
 JV7143'READING OLNEY MILL PARK, AND 65.6 FT (20.0 M) NORTH OF A STORM
 JV7143'DRAIN (NORTHWEST CORNER).
 JV7143
 JV7143                          STATION RECOVERY (2001)
 JV7143
 JV7143'RECOVERY NOTE BY US POWER SQUADRON 2001 (BAS)
 JV7143'RECOVERED IN GOOD CONDITION.
 JV7143
 JV7143                          STATION RECOVERY (2009)
 JV7143
 JV7143'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 JV7143'FAIR SITE FOR GPS - SMALL TREES TO SOUTHWEST
 JV7143'(X,Y,Z, NOT CHECKED)
 JV7143
 JV7143                          STATION RECOVERY (2014)
 JV7143
 JV7143'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 JV7143'TREE CANOPY TO THE SOUTHWEST COULD EFFECT GPS OBSERVATIONS.
 JV7143
 JV7143                          STATION RECOVERY (2022)
 JV7143
 JV7143'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (KA)
 JV7143'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7144 ***********************************************************************
 JV7144  DESIGNATION -  20352
 JV7144  PID         -  JV7144
 JV7144  STATE/COUNTY-  MD/MONTGOMERY
 JV7144  COUNTRY     -  US
 JV7144  USGS QUAD   -  SANDY SPRING (2016)
 JV7144
 JV7144                         *CURRENT SURVEY CONTROL
 JV7144  ______________________________________________________________________
 JV7144* NAD 83(2011) POSITION- 39 08 48.26728(N) 077 03 02.36027(W)   ADJUSTED
 JV7144* NAD 83(2011) ELLIP HT-   114.643 (meters)        (06/27/12)   ADJUSTED
 JV7144* NAD 83(2011) EPOCH   -  2010.00
 JV7144* NAVD 88 ORTHO HEIGHT -   146.5   (meters)      481.    (feet) GPS OBS
 JV7144  ______________________________________________________________________
 JV7144  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7144  GEOID HEIGHT    -        -32.200 (meters)                     GEOID93
 JV7144  GEOID HEIGHT    -        -31.848 (meters)                     GEOID18
 JV7144  NAD 83(2011) X  -  1,109,948.543 (meters)                     COMP
 JV7144  NAD 83(2011) Y  - -4,827,182.304 (meters)                     COMP
 JV7144  NAD 83(2011) Z  -  4,005,036.521 (meters)                     COMP
 JV7144  LAPLACE CORR    -         -3.55  (seconds)                    DEFLEC18
 JV7144
 JV7144  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7144  Standards:
 JV7144         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7144            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7144  -------------------------------------------------------------------
 JV7144  NETWORK    1.30   1.88           0.59   0.46   0.96      0.04090859
 JV7144  -------------------------------------------------------------------
 JV7144  Click here for local accuracies and other accuracy information.
 JV7144
 JV7144.The horizontal coordinates were established by GPS observations
 JV7144.and adjusted by the National Geodetic Survey in June 2012.
 JV7144
 JV7144.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7144.been affixed to the stable North American tectonic plate. See 
 JV7144.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7144
 JV7144.The horizontal coordinates are valid at the epoch date displayed above
 JV7144.which is a decimal equivalence of Year/Month/Day.
 JV7144
 JV7144.The orthometric height was determined by GPS observations and a
 JV7144.high-resolution geoid model.
 JV7144
 JV7144.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7144.GEOID18 height accuracy estimate available here.
 JV7144
 JV7144.Click photographs - Photos may exist for this station.
 JV7144
 JV7144.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7144
 JV7144.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7144
 JV7144.The ellipsoidal height was determined by GPS observations
 JV7144.and is referenced to NAD 83.
 JV7144
 JV7144. The following values were computed from the NAD 83(2011) position.
 JV7144
 JV7144;                    North         East     Units Scale Factor Converg.
 JV7144;SPC MD       -   164,297.425   395,621.134   MT  0.99996100   -0 01 54.5
 JV7144;SPC MD       -   539,032.47  1,297,967.00   sFT  0.99996100   -0 01 54.5
 JV7144;UTM  18      - 4,335,063.291   322,789.733   MT  0.99998668   -1 17 41.8
 JV7144
 JV7144!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7144!SPC MD       -   0.99998201  x   0.99996100  =   0.99994301
 JV7144!UTM  18      -   0.99998201  x   0.99998668  =   0.99996869
 JV7144
 JV7144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2278935063(NAD 83)
 JV7144
 JV7144                          SUPERSEDED SURVEY CONTROL
 JV7144
 JV7144  NAD 83(2007)-  39 08 48.26726(N)    077 03 02.36127(W) AD(2002.00) 0
 JV7144  ELLIP H (02/10/07)  114.690  (m)                       GP(2002.00)    
 JV7144  ELLIP H (08/30/02)  114.694  (m)                       GP(       ) 4 2
 JV7144  NAD 83(1991)-  39 08 48.26684(N)    077 03 02.36120(W) AD(       ) 1
 JV7144  ELLIP H (01/11/94)  114.619  (m)                       GP(       ) 4 1
 JV7144
 JV7144.Superseded values are not recommended for survey control.
 JV7144
 JV7144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7144.See file dsdata.pdf to determine how the superseded data were derived.
 JV7144
 JV7144_MARKER: DD = SURVEY DISK
 JV7144_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7144_STAMPING: T.S. 20352 MC
 JV7144_MARK LOGO: WSSC
 JV7144_PROJECTION: RECESSED 2 CENTIMETERS
 JV7144_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7144_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7144+STABILITY: SURFACE MOTION
 JV7144_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7144+SATELLITE: SATELLITE OBSERVATIONS - November 30, 2021
 JV7144
 JV7144  HISTORY     - Date     Condition        Report By
 JV7144  HISTORY     - 1993     MONUMENTED       MSI
 JV7144  HISTORY     - 19960310 GOOD             MSI
 JV7144  HISTORY     - 20080920 GOOD             NGS
 JV7144  HISTORY     - 20211130 GOOD             MDSHA
 JV7144
 JV7144                          STATION DESCRIPTION
 JV7144
 JV7144'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7144'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7144'6.7 MI (10.8 KM) NORTHEAST OF THE CITY OF ROCKVILLE.  TO REACH THE
 JV7144'STATION FROM THE INTERSECTION OF GEORGIA AVENUE (S.R. 97) AND OLNEY
 JV7144'SANDY SPRING ROAD (S.R. 108), PROCEED EAST ON OLNEY SANDY SPRING ROAD
 JV7144'FOR 0.95 MI (1.53 KM) TO THE INTERSECTION WITH OLD BALTIMORE ROAD,
 JV7144'AND THE STATION ON THE LEFT.
 JV7144'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7144'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7144'T.S. 20352 MC. THE DISK IS LOCATED 5.1 FT (1.6 M) NORTHEAST OF
 JV7144'OLNEY SANDY SPRING ROAD (BACK OF CURB), 30.5 FT (9.3 M) NORTHWEST OF
 JV7144'PEPCO POWER POLE NO. 785478-5727, AND 14.2 FT (4.3 M) SOUTHEAST OF A
 JV7144'METRO BUS SIGN.
 JV7144
 JV7144                          STATION RECOVERY (1996)
 JV7144
 JV7144'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1996 (JC)
 JV7144'RECOVERED AS DESCRIBED.
 JV7144
 JV7144                          STATION RECOVERY (2008)
 JV7144
 JV7144'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7144'MARK IS 0.61 M (2.0 FT) NNE OF THE N EDGE OF A SIDEWALK, 11.38 M
 JV7144'(37.33 FT) E OF THE E EDGE OF A WHITE STONE METRO BUS STOP, AND IS
 JV7144'RECESSED 10 CM (0.3 FT) BELOW GROUND LEVEL.
 JV7144
 JV7144                          STATION RECOVERY (2021)
 JV7144
 JV7144'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV7144'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7145 ***********************************************************************
 JV7145  DESIGNATION -  20353
 JV7145  PID         -  JV7145
 JV7145  STATE/COUNTY-  MD/MONTGOMERY
 JV7145  COUNTRY     -  US
 JV7145  USGS QUAD   -  SANDY SPRING (2016)
 JV7145
 JV7145                         *CURRENT SURVEY CONTROL
 JV7145  ______________________________________________________________________
 JV7145* NAD 83(2011) POSITION- 39 10 34.80966(N) 077 02 54.74700(W)   ADJUSTED
 JV7145* NAD 83(2011) ELLIP HT-   102.083 (meters)        (06/27/12)   ADJUSTED
 JV7145* NAD 83(2011) EPOCH   -  2010.00
 JV7145* NAVD 88 ORTHO HEIGHT -   133.9   (meters)      439.    (feet) GPS OBS
 JV7145  ______________________________________________________________________
 JV7145  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7145  GEOID HEIGHT    -        -32.200 (meters)                     GEOID93
 JV7145  GEOID HEIGHT    -        -31.849 (meters)                     GEOID18
 JV7145  NAD 83(2011) X  -  1,109,659.488 (meters)                     COMP
 JV7145  NAD 83(2011) Y  - -4,825,109.702 (meters)                     COMP
 JV7145  NAD 83(2011) Z  -  4,007,576.189 (meters)                     COMP
 JV7145  LAPLACE CORR    -         -3.32  (seconds)                    DEFLEC18
 JV7145
 JV7145  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7145  Standards:
 JV7145         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7145            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7145  -------------------------------------------------------------------
 JV7145  NETWORK    1.42   2.96           0.63   0.52   1.51     -0.04376316
 JV7145  -------------------------------------------------------------------
 JV7145  Click here for local accuracies and other accuracy information.
 JV7145
 JV7145.The horizontal coordinates were established by GPS observations
 JV7145.and adjusted by the National Geodetic Survey in June 2012.
 JV7145
 JV7145.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7145.been affixed to the stable North American tectonic plate. See 
 JV7145.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7145
 JV7145.The horizontal coordinates are valid at the epoch date displayed above
 JV7145.which is a decimal equivalence of Year/Month/Day.
 JV7145
 JV7145.The orthometric height was determined by GPS observations and a
 JV7145.high-resolution geoid model.
 JV7145
 JV7145.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7145.GEOID18 height accuracy estimate available here.
 JV7145
 JV7145.Click photographs - Photos may exist for this station.
 JV7145
 JV7145.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7145
 JV7145.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7145
 JV7145.The ellipsoidal height was determined by GPS observations
 JV7145.and is referenced to NAD 83.
 JV7145
 JV7145. The following values were computed from the NAD 83(2011) position.
 JV7145
 JV7145;                    North         East     Units Scale Factor Converg.
 JV7145;SPC MD       -   167,582.808   395,805.692   MT  0.99996357   -0 01 49.7
 JV7145;SPC MD       -   549,811.26  1,298,572.51   sFT  0.99996357   -0 01 49.7
 JV7145;UTM  18      - 4,338,343.883   323,046.699   MT  0.99998556   -1 17 39.9
 JV7145
 JV7145!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7145!SPC MD       -   0.99998398  x   0.99996357  =   0.99994755
 JV7145!UTM  18      -   0.99998398  x   0.99998556  =   0.99996954
 JV7145
 JV7145:                Primary Azimuth Mark                     Grid Az
 JV7145:SPC MD       -  20343                                    244 20 39.3
 JV7145:UTM  18      -  20343                                    245 36 29.5
 JV7145
 JV7145_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2304638343(NAD 83)
 JV7145
 JV7145|---------------------------------------------------------------------|
 JV7145| PID    Reference Object                     Distance      Geod. Az  |
 JV7145|                                                           dddmmss.s |
 JV7145| JV7135 20343                               482.618 METERS 2441849.6 |
 JV7145|---------------------------------------------------------------------|
 JV7145
 JV7145                          SUPERSEDED SURVEY CONTROL
 JV7145
 JV7145  NAD 83(2007)-  39 10 34.80969(N)    077 02 54.74780(W) AD(2002.00) 0
 JV7145  ELLIP H (02/10/07)  102.122  (m)                       GP(2002.00)    
 JV7145  ELLIP H (08/30/02)  102.127  (m)                       GP(       ) 4 2
 JV7145  NAD 83(1991)-  39 10 34.80931(N)    077 02 54.74768(W) AD(       ) 1
 JV7145  ELLIP H (01/11/94)  102.055  (m)                       GP(       ) 4 1
 JV7145
 JV7145.Superseded values are not recommended for survey control.
 JV7145
 JV7145.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7145.See file dsdata.pdf to determine how the superseded data were derived.
 JV7145
 JV7145_STAMPING: T.S. 20353 MC
 JV7145_MARK LOGO: WSSC
 JV7145_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7145+SATELLITE: SATELLITE OBSERVATIONS - December 30, 2008
 JV7145
 JV7145  HISTORY     - Date     Condition        Report By
 JV7145  HISTORY     - 1993     MONUMENTED       MSI
 JV7145  HISTORY     - 20011026 GOOD             USPSQD
 JV7145  HISTORY     - 20030821 GOOD             GEOCAC
 JV7145  HISTORY     - 20081230 GOOD             NGS
 JV7145  HISTORY     - 20170808 MARK NOT FOUND   NGS
 JV7145
 JV7145                          STATION DESCRIPTION
 JV7145
 JV7145'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7145'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7145'0.6 MI (1.0 KM) SOUTHEAST OF THE TOWN OF BROOKEVILLE.  TO REACH THE
 JV7145'STATION FROM THE INTERSECTION OF OLNEY-LAYTONSVILLE ROAD (S.R. 108)
 JV7145'AND GEORGIA AVENUE (S.R. 97), PROCEED NORTH ON GEORGIA AVENUE FOR 1.4
 JV7145'MI (2.3 KM) TO THE INTERSECTION WITH GOLD MINE ROAD.  TURN RIGHT AND
 JV7145'TRAVEL EAST ON GOLD MINE ROAD FOR 0.6 MI (1.0 KM) TO THE STATION ON
 JV7145'RIGHT.
 JV7145'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7145'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7145'T.S. 20353 MC. THE DISK IS LOCATED 17.0 FT (5.2 M) SOUTH OF THE
 JV7145'CENTER OF GOLD MINE ROAD, 22.0 FT (6.7 M) NORTH OF A SIGN READING
 JV7145'GAS PIPE LINE, AND 36.5 FT (11.1 M) SOUTH-SOUTHWEST OF MAIL BOX NO.
 JV7145'2221.
 JV7145
 JV7145                          STATION RECOVERY (2001)
 JV7145
 JV7145'RECOVERY NOTE BY US POWER SQUADRON 2001 (BAS)
 JV7145'RECOVERED IN GOOD CONDITION.
 JV7145
 JV7145                          STATION RECOVERY (2003)
 JV7145
 JV7145'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV7145'RECOVERED IN GOOD CONDITION.
 JV7145
 JV7145                          STATION RECOVERY (2008)
 JV7145
 JV7145'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7145'RECOVERED IN GOOD CONDITION.
 JV7145
 JV7145                          STATION RECOVERY (2017)
 JV7145
 JV7145'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV7145'THE MEASUREMENTS LOCATE THE SURVEY DISK UNDER AN ASPHALT PEDESTRIAN
 JV7145'WALK WAY ABOUT 6 FT (1.8 M) WIDE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7147 ***********************************************************************
 JV7147  DESIGNATION -  20355
 JV7147  PID         -  JV7147
 JV7147  STATE/COUNTY-  MD/MONTGOMERY
 JV7147  COUNTRY     -  US
 JV7147  USGS QUAD   -  KENSINGTON (2016)
 JV7147
 JV7147                         *CURRENT SURVEY CONTROL
 JV7147  ______________________________________________________________________
 JV7147* NAD 83(2011) POSITION- 39 04 26.03183(N) 077 05 58.11481(W)   ADJUSTED
 JV7147* NAD 83(2011) ELLIP HT-    66.749 (meters)        (06/27/12)   ADJUSTED
 JV7147* NAD 83(2011) EPOCH   -  2010.00
 JV7147* NAVD 88 ORTHO HEIGHT -    98.6   (meters)      323.    (feet) GPS OBS
 JV7147  ______________________________________________________________________
 JV7147  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7147  GEOID HEIGHT    -        -32.160 (meters)                     GEOID93
 JV7147  GEOID HEIGHT    -        -31.799 (meters)                     GEOID18
 JV7147  NAD 83(2011) X  -  1,106,965.622 (meters)                     COMP
 JV7147  NAD 83(2011) Y  - -4,833,062.730 (meters)                     COMP
 JV7147  NAD 83(2011) Z  -  3,998,731.349 (meters)                     COMP
 JV7147  LAPLACE CORR    -         -3.11  (seconds)                    DEFLEC18
 JV7147
 JV7147  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7147  Standards:
 JV7147         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7147            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7147  -------------------------------------------------------------------
 JV7147  NETWORK    1.15   2.37           0.52   0.41   1.21      0.06489014
 JV7147  -------------------------------------------------------------------
 JV7147  Click here for local accuracies and other accuracy information.
 JV7147
 JV7147.The horizontal coordinates were established by GPS observations
 JV7147.and adjusted by the National Geodetic Survey in June 2012.
 JV7147
 JV7147.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7147.been affixed to the stable North American tectonic plate. See 
 JV7147.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7147
 JV7147.The horizontal coordinates are valid at the epoch date displayed above
 JV7147.which is a decimal equivalence of Year/Month/Day.
 JV7147
 JV7147.The orthometric height was determined by GPS observations and a
 JV7147.high-resolution geoid model.
 JV7147
 JV7147.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7147.GEOID18 height accuracy estimate available here.
 JV7147
 JV7147.Click photographs - Photos may exist for this station.
 JV7147
 JV7147.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7147
 JV7147.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7147
 JV7147.The ellipsoidal height was determined by GPS observations
 JV7147.and is referenced to NAD 83.
 JV7147
 JV7147. The following values were computed from the NAD 83(2011) position.
 JV7147
 JV7147;                    North         East     Units Scale Factor Converg.
 JV7147;SPC MD       -   156,214.364   391,392.076   MT  0.99995581   -0 03 44.8
 JV7147;SPC MD       -   512,513.29  1,284,092.17   sFT  0.99995581   -0 03 44.8
 JV7147;UTM  18      - 4,327,075.044   318,383.479   MT  1.00000616   -1 19 25.3
 JV7147
 JV7147!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7147!SPC MD       -   0.99998953  x   0.99995581  =   0.99994534
 JV7147!UTM  18      -   0.99998953  x   1.00000616  =   0.99999569
 JV7147
 JV7147_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1838327075(NAD 83)
 JV7147
 JV7147                          SUPERSEDED SURVEY CONTROL
 JV7147
 JV7147  NAD 83(2007)-  39 04 26.03202(N)    077 05 58.11560(W) AD(2002.00) 0
 JV7147  ELLIP H (02/10/07)   66.776  (m)                       GP(2002.00)    
 JV7147  ELLIP H (08/30/02)   66.795  (m)                       GP(       ) 4 2
 JV7147  NAD 83(1991)-  39 04 26.03154(N)    077 05 58.11581(W) AD(       ) 1
 JV7147  ELLIP H (01/11/94)   66.708  (m)                       GP(       ) 4 1
 JV7147
 JV7147.Superseded values are not recommended for survey control.
 JV7147
 JV7147.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7147.See file dsdata.pdf to determine how the superseded data were derived.
 JV7147
 JV7147_MARKER: DD = SURVEY DISK
 JV7147_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7147_STAMPING: T.S. 20355 MC
 JV7147_MARK LOGO: WSSC
 JV7147_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7147_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7147+STABILITY: SURFACE MOTION
 JV7147_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7147+SATELLITE: SATELLITE OBSERVATIONS - April 07, 2005
 JV7147
 JV7147  HISTORY     - Date     Condition        Report By
 JV7147  HISTORY     - 1993     MONUMENTED       MSI
 JV7147  HISTORY     - 20020118 GOOD             URS
 JV7147  HISTORY     - 20050407 GOOD             USPSQD
 JV7147
 JV7147                          STATION DESCRIPTION
 JV7147
 JV7147'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7147'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7147'2.5 MI (4.0 KM) EAST OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7147'FROM THE INTERSECTION OF VEIRS MILL ROAD (S.R. 586) AND ASPEN HILL
 JV7147'ROAD, PROCEED NORTHEAST ON ASPEN HILL ROAD FOR 0.4 MI (0.6 KM) TO THE
 JV7147'INTERSECTION WITH ARCTIC AVENUE.  TURN LEFT AND PROCEED NORTH ON
 JV7147'ARCTIC AVENUE FOR 0.15 MI (0.24 KM) TO THE INTERSECTION WITH ARCTIC
 JV7147'COURT, AND THE STATION ON THE LEFT.
 JV7147'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7147'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7147'T.S. 20355 MC. THE DISK IS LOCATED 22.7 FT (6.9 M) SOUTHWEST OF A
 JV7147'TELEPHONE POLE, 43.0 FT (13.1 M) WEST OF THE CENTERLINE OF ARCTIC
 JV7147'AVENUE, AND 28.5 FT (8.7 M) SOUTH OF A METAL LAMP POST.
 JV7147
 JV7147                          STATION RECOVERY (2002)
 JV7147
 JV7147'RECOVERY NOTE BY URS COMPANY 2002 (EN)
 JV7147'RECOVERED IN GOOD CONDITION.
 JV7147
 JV7147                          STATION RECOVERY (2005)
 JV7147
 JV7147'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV7147'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7148 ***********************************************************************
 JV7148  DESIGNATION -  20356
 JV7148  PID         -  JV7148
 JV7148  STATE/COUNTY-  MD/MONTGOMERY
 JV7148  COUNTRY     -  US
 JV7148  USGS QUAD   -  ROCKVILLE (2016)
 JV7148
 JV7148                         *CURRENT SURVEY CONTROL
 JV7148  ______________________________________________________________________
 JV7148* NAD 83(2011) POSITION- 39 04 23.55670(N) 077 12 15.77280(W)   ADJUSTED
 JV7148* NAD 83(2011) ELLIP HT-   102.571 (meters)        (06/27/12)   ADJUSTED
 JV7148* NAD 83(2011) EPOCH   -  2010.00
 JV7148* NAVD 88 ORTHO HEIGHT -   134.3   (meters)      441.    (feet) GPS OBS
 JV7148  ______________________________________________________________________
 JV7148  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7148  GEOID HEIGHT    -        -32.080 (meters)                     GEOID93
 JV7148  GEOID HEIGHT    -        -31.701 (meters)                     GEOID18
 JV7148  NAD 83(2011) X  -  1,098,131.550 (meters)                     COMP
 JV7148  NAD 83(2011) Y  - -4,835,155.449 (meters)                     COMP
 JV7148  NAD 83(2011) Z  -  3,998,694.671 (meters)                     COMP
 JV7148  LAPLACE CORR    -         -0.11  (seconds)                    DEFLEC18
 JV7148
 JV7148  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7148  Standards:
 JV7148         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7148            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7148  -------------------------------------------------------------------
 JV7148  NETWORK    1.09   2.45           0.46   0.43   1.25     -0.03835710
 JV7148  -------------------------------------------------------------------
 JV7148  Click here for local accuracies and other accuracy information.
 JV7148
 JV7148.The horizontal coordinates were established by GPS observations
 JV7148.and adjusted by the National Geodetic Survey in June 2012.
 JV7148
 JV7148.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7148.been affixed to the stable North American tectonic plate. See 
 JV7148.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7148
 JV7148.The horizontal coordinates are valid at the epoch date displayed above
 JV7148.which is a decimal equivalence of Year/Month/Day.
 JV7148
 JV7148.The orthometric height was determined by GPS observations and a
 JV7148.high-resolution geoid model.
 JV7148
 JV7148.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7148.GEOID18 height accuracy estimate available here.
 JV7148
 JV7148.Click photographs - Photos may exist for this station.
 JV7148
 JV7148.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7148
 JV7148.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7148
 JV7148.The ellipsoidal height was determined by GPS observations
 JV7148.and is referenced to NAD 83.
 JV7148
 JV7148. The following values were computed from the NAD 83(2011) position.
 JV7148
 JV7148;                    North         East     Units Scale Factor Converg.
 JV7148;SPC MD       -   156,153.147   382,314.237   MT  0.99995577   -0 07 41.8
 JV7148;SPC MD       -   512,312.45  1,254,309.29   sFT  0.99995577   -0 07 41.8
 JV7148;SPC VA N     - 2,156,919.681 3,612,113.065   MT  0.99997996   +0 48 31.0
 JV7148;SPC VA N     - 7,076,493.99 11,850,740.95   sFT  0.99997996   +0 48 31.0
 JV7148;UTM  18      - 4,327,213.694   309,305.848   MT  1.00004778   -1 23 23.5
 JV7148
 JV7148!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7148!SPC MD       -   0.99998391  x   0.99995577  =   0.99993968
 JV7148!SPC VA N     -   0.99998391  x   0.99997996  =   0.99996387
 JV7148!UTM  18      -   0.99998391  x   1.00004778  =   1.00003169
 JV7148
 JV7148_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0930527213(NAD 83)
 JV7148
 JV7148                          SUPERSEDED SURVEY CONTROL
 JV7148
 JV7148  NAD 83(2007)-  39 04 23.55693(N)    077 12 15.77353(W) AD(2002.00) 0
 JV7148  ELLIP H (02/10/07)  102.597  (m)                       GP(2002.00)    
 JV7148  ELLIP H (08/30/02)  102.622  (m)                       GP(       ) 4 2
 JV7148  ELLIP H (04/01/98)  102.536  (m)                       GP(       ) 4 1
 JV7148  NAD 83(1993)-  39 04 23.55647(N)    077 12 15.77389(W) AD(       ) 1
 JV7148  ELLIP H (11/14/94)  102.535  (m)                       GP(       ) 4 2
 JV7148  NAD 83(1991)-  39 04 23.55637(N)    077 12 15.77432(W) AD(       ) 1
 JV7148  ELLIP H (01/11/94)  102.530  (m)                       GP(       ) 4 1
 JV7148
 JV7148.Superseded values are not recommended for survey control.
 JV7148
 JV7148.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7148.See file dsdata.pdf to determine how the superseded data were derived.
 JV7148
 JV7148_MARKER: DD = SURVEY DISK
 JV7148_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7148_STAMPING: T.S. 20356 MC
 JV7148_MARK LOGO: WSSC
 JV7148_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7148_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7148+STABILITY: SURFACE MOTION
 JV7148_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7148+SATELLITE: SATELLITE OBSERVATIONS - August 27, 2010
 JV7148
 JV7148  HISTORY     - Date     Condition        Report By
 JV7148  HISTORY     - 1993     MONUMENTED       MSI
 JV7148  HISTORY     - 20001106 GOOD             USPSQD
 JV7148  HISTORY     - 20100827 GOOD             NGS
 JV7148
 JV7148                          STATION DESCRIPTION
 JV7148
 JV7148'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7148'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7148'3.3 MI (5.3 KM) WEST OF THE CITY OF ROCKVILLE.  TO REACH THE STATION
 JV7148'FROM THE INTERSECTION OF WOOTTON PARKWAY AND DARNESTOWN ROAD (S.R.
 JV7148'28), PROCEED SOUTH ON WOOTTON PARKWAY FOR 0.1 MI (0.2 KM) TO THE
 JV7148'INTERSECTION WITH GLEN MILL ROAD.  TURN RIGHT AND PROCEED SOUTH ON
 JV7148'GLEN MILL ROAD FOR 1.65 MI (2.66 KM) TO THE INTERSECTION WITH SUNSET
 JV7148'DRIVE. TURN LEFT AND TRAVEL EAST ALONG SUNSET DRIVE FOR 0.15 MI
 JV7148'(0.24 KM) TO THE INTERSECTION WITH CLEVELAND DRIVE, AND THE STATION
 JV7148'ON THE RIGHT.
 JV7148'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7148'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7148'T.S. 20356 MC. THE DISK IS LOCATED 19.5 FT (5.9 M) SOUTH OF THE
 JV7148'CENTERLINE OF SUNSET DRIVE, 23.2 FT (7.1 M) WEST OF THE CENTERLINE OF
 JV7148'CLEVELAND DRIVE, AND 48.6 FT (14.8 M) NORTH OF POWER POLE NO.
 JV7148'MD-M5204.
 JV7148
 JV7148                          STATION RECOVERY (2000)
 JV7148
 JV7148'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV7148'RECOVERED IN GOOD CONDITION.
 JV7148
 JV7148                          STATION RECOVERY (2010)
 JV7148
 JV7148'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV7148'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7149 ***********************************************************************
 JV7149  DESIGNATION -  20357
 JV7149  PID         -  JV7149
 JV7149  STATE/COUNTY-  MD/MONTGOMERY
 JV7149  COUNTRY     -  US
 JV7149  USGS QUAD   -  GAITHERSBURG (2016)
 JV7149
 JV7149                         *CURRENT SURVEY CONTROL
 JV7149  ______________________________________________________________________
 JV7149* NAD 83(2011) POSITION- 39 10 37.42284(N) 077 12 09.55030(W)   ADJUSTED
 JV7149* NAD 83(2011) ELLIP HT-    87.543 (meters)        (06/27/12)   ADJUSTED
 JV7149* NAD 83(2011) EPOCH   -  2010.00
 JV7149* NAVD 88 ORTHO HEIGHT -   119.3   (meters)      391.    (feet) GPS OBS
 JV7149  ______________________________________________________________________
 JV7149  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7149  GEOID HEIGHT    -        -32.130 (meters)                     GEOID93
 JV7149  GEOID HEIGHT    -        -31.769 (meters)                     GEOID18
 JV7149  NAD 83(2011) X  -  1,096,663.319 (meters)                     COMP
 JV7149  NAD 83(2011) Y  - -4,828,016.329 (meters)                     COMP
 JV7149  NAD 83(2011) Z  -  4,007,629.476 (meters)                     COMP
 JV7149  LAPLACE CORR    -          1.42  (seconds)                    DEFLEC18
 JV7149
 JV7149  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7149  Standards:
 JV7149         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7149            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7149  -------------------------------------------------------------------
 JV7149  NETWORK    1.27   2.63           0.55   0.49   1.34      0.00909804
 JV7149  -------------------------------------------------------------------
 JV7149  Click here for local accuracies and other accuracy information.
 JV7149
 JV7149.The horizontal coordinates were established by GPS observations
 JV7149.and adjusted by the National Geodetic Survey in June 2012.
 JV7149
 JV7149.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7149.been affixed to the stable North American tectonic plate. See 
 JV7149.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7149
 JV7149.The horizontal coordinates are valid at the epoch date displayed above
 JV7149.which is a decimal equivalence of Year/Month/Day.
 JV7149
 JV7149.The orthometric height was determined by GPS observations and a
 JV7149.high-resolution geoid model.
 JV7149
 JV7149.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7149.GEOID18 height accuracy estimate available here.
 JV7149
 JV7149.Click photographs - Photos may exist for this station.
 JV7149
 JV7149.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7149
 JV7149.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7149
 JV7149.The ellipsoidal height was determined by GPS observations
 JV7149.and is referenced to NAD 83.
 JV7149
 JV7149. The following values were computed from the NAD 83(2011) position.
 JV7149
 JV7149;                    North         East     Units Scale Factor Converg.
 JV7149;SPC MD       -   167,681.712   382,489.400   MT  0.99996364   -0 07 37.9
 JV7149;SPC MD       -   550,135.75  1,254,883.97   sFT  0.99996364   -0 07 37.9
 JV7149;UTM  18      - 4,338,736.603   309,735.143   MT  1.00004576   -1 23 30.7
 JV7149
 JV7149!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7149!SPC MD       -   0.99998627  x   0.99996364  =   0.99994991
 JV7149!UTM  18      -   0.99998627  x   1.00004576  =   1.00003202
 JV7149
 JV7149_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0973538736(NAD 83)
 JV7149
 JV7149                          SUPERSEDED SURVEY CONTROL
 JV7149
 JV7149  NAD 83(2007)-  39 10 37.42305(N)    077 12 09.55105(W) AD(2002.00) 0
 JV7149  ELLIP H (02/10/07)   87.572  (m)                       GP(2002.00)    
 JV7149  ELLIP H (08/30/02)   87.573  (m)                       GP(       ) 4 2
 JV7149  NAD 83(1991)-  39 10 37.42237(N)    077 12 09.55114(W) AD(       ) 1
 JV7149  ELLIP H (01/11/94)   87.515  (m)                       GP(       ) 4 1
 JV7149
 JV7149.Superseded values are not recommended for survey control.
 JV7149
 JV7149.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7149.See file dsdata.pdf to determine how the superseded data were derived.
 JV7149
 JV7149_MARKER: DD = SURVEY DISK
 JV7149_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7149_STAMPING: T.S. 20357 MC
 JV7149_MARK LOGO: WSSC
 JV7149_PROJECTION: RECESSED 5 CENTIMETERS
 JV7149_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7149_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7149+STABILITY: SURFACE MOTION
 JV7149_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7149+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2018
 JV7149
 JV7149  HISTORY     - Date     Condition        Report By
 JV7149  HISTORY     - 1993     MONUMENTED       MSI
 JV7149  HISTORY     - 20050106 GOOD             URS
 JV7149  HISTORY     - 20180728 GOOD             BASE9
 JV7149
 JV7149                          STATION DESCRIPTION
 JV7149
 JV7149'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7149'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 JV7149'3.9 MI (6.3 KM) SOUTHWEST OF THE TOWN OF LAYTONSVILLE.  TO REACH THE
 JV7149'STATION FROM THE INTERSECTION OF BRINK WIGHTMAN ROAD AND MONTGOMERY
 JV7149'VILLAGE AVENUE, PROCEED SOUTH ON MONTGOMERY VILLAGE AVENUE FOR 1.1 MI
 JV7149'(1.8 KM) TO THE INTERSECTION WITH BRASSIE PLACE, AND THE STATION ON
 JV7149'THE LEFT.
 JV7149'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7149'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7149'T.S. 20357 MC. THE DISK IS LOCATED 105.5 FT (32.2 M) NORTHEAST OF
 JV7149'TENNIS COURTS (NORTHWEST CORNER), 63.5 FT (19.4 M) SOUTHWEST OF A
 JV7149'MANHOLE, AND 60.2 FT (18.3 M) SOUTHEAST OF MONTGOMERY VILLAGE AVENUE
 JV7149'(BACK OF CURB).
 JV7149
 JV7149                          STATION RECOVERY (2005)
 JV7149
 JV7149'RECOVERY NOTE BY URS COMPANY 2005 (JP)
 JV7149'RECOVERED IN GOOD CONDITION.
 JV7149
 JV7149                          STATION RECOVERY (2018)
 JV7149
 JV7149'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2018 (DRD)
 JV7149'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ9007 ***********************************************************************
 DJ9007  DESIGNATION -  2036
 DJ9007  PID         -  DJ9007
 DJ9007  STATE/COUNTY-  MD/ANNE ARUNDEL
 DJ9007  COUNTRY     -  US
 DJ9007  USGS QUAD   -  RELAY (2016)
 DJ9007
 DJ9007                         *CURRENT SURVEY CONTROL
 DJ9007  ______________________________________________________________________
 DJ9007* NAD 83(1986) POSITION- 39 09 45.0    (N) 076 40 24.5    (W)   HD_HELD2
 DJ9007* NAVD 88 ORTHO HEIGHT -    48.234 (meters)      158.25  (feet) ADJUSTED
 DJ9007  ______________________________________________________________________
 DJ9007  GEOID HEIGHT    -        -32.697 (meters)                     GEOID18
 DJ9007  DYNAMIC HEIGHT  -         48.208 (meters)      158.16  (feet) COMP
 DJ9007  MODELED GRAVITY -    980,091.5   (mgal)                       NAVD 88
 DJ9007
 DJ9007  VERT ORDER      -  FIRST     CLASS II
 DJ9007
 DJ9007.The horizontal coordinates were established by autonomous hand held GPS
 DJ9007.observations and have an estimated accuracy of +/- 10 meters.
 DJ9007
 DJ9007.The orthometric height was determined by differential leveling and
 DJ9007.adjusted by the NATIONAL GEODETIC SURVEY
 DJ9007.in June 2008.
 DJ9007
 DJ9007.No vertical observational check was made to the station.
 DJ9007
 DJ9007.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ9007.GEOID18 height accuracy estimate available here.
 DJ9007
 DJ9007.Click photographs - Photos may exist for this station.
 DJ9007
 DJ9007.The dynamic height is computed by dividing the NAVD 88
 DJ9007.geopotential number by the normal gravity value computed on the
 DJ9007.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ9007.degrees latitude (g = 980.6199 gals.).
 DJ9007
 DJ9007.The modeled gravity was interpolated from observed gravity values.
 DJ9007
 DJ9007;                    North         East    Units  Estimated Accuracy
 DJ9007;SPC MD       -   166,096.      428,220.      MT  (+/- 10 meters HH2 GPS)
 DJ9007
 DJ9007_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5541836143(NAD 83)
 DJ9007
 DJ9007                          SUPERSEDED SURVEY CONTROL
 DJ9007
 DJ9007.No superseded survey control is available for this station.
 DJ9007
 DJ9007_MARKER: DD = SURVEY DISK
 DJ9007_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 DJ9007+WITH SETTING: INFORMATION.
 DJ9007_STAMPING: 2036
 DJ9007_MARK LOGO: MD-003
 DJ9007_PROJECTION: FLUSH
 DJ9007_MAGNETIC: I = MARKER IS A STEEL ROD
 DJ9007_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DJ9007_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ9007+SATELLITE: SATELLITE OBSERVATIONS - July 27, 2021
 DJ9007
 DJ9007  HISTORY     - Date     Condition        Report By
 DJ9007  HISTORY     - UNK      MONUMENTED       MD-003
 DJ9007  HISTORY     - 20071222 GOOD             JARICE
 DJ9007  HISTORY     - 20210727 GOOD             MD-003
 DJ9007
 DJ9007                          STATION DESCRIPTION
 DJ9007
 DJ9007'DESCRIBED BY J A RICE INC 2007 (MRA)
 DJ9007'THE MARK IS LOCATED ABOUT 4.8 MI (7.7 KM) SOUTH-SOUTHEAST OF RELAY,
 DJ9007'4.1 MI (6.5 KM) SOUTH-SOUTHEAST OF ELKRIDGE AND 3.4 MI (5.5 KM)
 DJ9007'SOUTHEAST OF HANOVER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DJ9007'
 DJ9007'TO REACH FROM THE JUNCTION OF I-97 AND MD 176, GO WEST ON MD 176 FOR
 DJ9007'1.69 MI (2.72 KM) TO MCCORMICK DRIVE AND THE MARK ON THE RIGHT.
 DJ9007'
 DJ9007'IT IS 83.0 FT (25.3 M) NORTH OF THE CENTERLINE OF MD 176, 79 FT (24.1
 DJ9007'M) WEST OF GUY POLE NUMBER 57, 60.5 FT (18.4 M) NORTHEAST OF A TRAFFIC
 DJ9007'LIGHT POLE, 41.0 FT (12.5 M) EAST OF THE EXTENDED CENTERLINE OF
 DJ9007'MCCORMICK DRIVE, 17.3 FT (5.3 M) SOUTH OF A CHAIN-LINK FENCE AND 13.0
 DJ9007'FT (4.0 M) NORTH OF A PAVED BIKE PATH.
 DJ9007
 DJ9007                          STATION RECOVERY (2021)
 DJ9007
 DJ9007'RECOVERY NOTE BY ANNE ARUNDEL COUNTY MARYLAND 2021 (CK)
 DJ9007'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2571 ***********************************************************************
 JV2571  DESIGNATION -  2037 WSSC
 JV2571  PID         -  JV2571
 JV2571  STATE/COUNTY-  MD/HOWARD
 JV2571  COUNTRY     -  US
 JV2571  USGS QUAD   -  WOODBINE (2016)
 JV2571
 JV2571                         *CURRENT SURVEY CONTROL
 JV2571  ______________________________________________________________________
 JV2571* NAD 83(1986) POSITION- 39 16 09.9    (N) 077 01 01.3    (W)   HD_HELD2
 JV2571* NAVD 88 ORTHO HEIGHT -   148.71  (+/-2cm)      487.9   (feet) VERTCON3
 JV2571  ______________________________________________________________________
 JV2571  GEOID HEIGHT    -        -31.880 (meters)                     GEOID18
 JV2571  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2571
 JV2571.The horizontal coordinates were established by autonomous hand held GPS
 JV2571.observations and have an estimated accuracy of +/- 10 meters.
 JV2571
 JV2571.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2571.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2571
 JV2571.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2571.GEOID18 height accuracy estimate available here.
 JV2571
 JV2571.The vertical order pertains to the NGVD 29 superseded value.
 JV2571
 JV2571.Click photographs - Photos may exist for this station.
 JV2571
 JV2571;                    North         East    Units  Estimated Accuracy
 JV2571;SPC MD       -   177,915.      398,531.      MT  (+/- 10 meters HH2 GPS)
 JV2571
 JV2571_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2599948613(NAD 83)
 JV2571
 JV2571                          SUPERSEDED SURVEY CONTROL
 JV2571
 JV2571  NGVD 29 (11/26/84)  148.922  (m)          488.59   (f) ADJUSTED    2 0
 JV2571
 JV2571.Superseded values are not recommended for survey control.
 JV2571
 JV2571.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2571.See file dsdata.pdf to determine how the superseded data were derived.
 JV2571
 JV2571_MARKER: DD = SURVEY DISK
 JV2571_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2571_SP_SET: BRIDGE
 JV2571_STAMPING: 2037
 JV2571_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2571
 JV2571  HISTORY     - Date     Condition        Report By
 JV2571  HISTORY     - UNK      MONUMENTED       WSSC
 JV2571  HISTORY     - 1946     GOOD             WSSC
 JV2571  HISTORY     - 20030821 MARK NOT FOUND   GEOCAC
 JV2571
 JV2571                          STATION DESCRIPTION
 JV2571
 JV2571'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2571'0.8 MI N FROM GARY.
 JV2571'ABOUT 0.8 MILE NORTH ALONG THE GARY-GLENWOOD ROAD FROM THE
 JV2571'JUNCTION OF THE GARY-TRIADELPHIA ROAD AT GARY, HOWARD COUNTY, AT
 JV2571'A BRIDGE OVER DORSEY BRANCH, AT THE SOUTH ABUTMENT, AND IN THE
 JV2571'TOP OF THE SOUTHEAST WING WALL.  A WASHINGTON SUBURBAN SANITARY
 JV2571'DISTRICT STANDARD DISK, STAMPED 2037.
 JV2571
 JV2571                          STATION RECOVERY (2003)
 JV2571
 JV2571'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV2571'BRIDGE AND WING WALL FOUND, BUT SURVEY DISK NOT SEEN.  MAY HAVE BEEN
 JV2571'LOST IN REPAVING OF SURFACE OR DURING INSTALLATION OF STEEL BRACING OF
 JV2571'BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9891 ***********************************************************************
 HV9891  DESIGNATION -  20376
 HV9891  PID         -  HV9891
 HV9891  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9891  COUNTRY     -  US
 HV9891  USGS QUAD   -  BENEDICT (2016)
 HV9891
 HV9891                         *CURRENT SURVEY CONTROL
 HV9891  ______________________________________________________________________
 HV9891* NAD 83(2011) POSITION- 38 34 03.77416(N) 076 41 55.85487(W)   ADJUSTED
 HV9891* NAD 83(2011) ELLIP HT-    11.934 (meters)        (06/27/12)   ADJUSTED
 HV9891* NAD 83(2011) EPOCH   -  2010.00
 HV9891* NAVD 88 ORTHO HEIGHT -    45.5   (meters)      149.    (feet) GPS OBS
 HV9891  ______________________________________________________________________
 HV9891  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9891  GEOID HEIGHT    -        -33.880 (meters)                     GEOID93
 HV9891  GEOID HEIGHT    -        -33.551 (meters)                     GEOID18
 HV9891  NAD 83(2011) X  -  1,148,827.063 (meters)                     COMP
 HV9891  NAD 83(2011) Y  - -4,859,444.273 (meters)                     COMP
 HV9891  NAD 83(2011) Z  -  3,954,916.790 (meters)                     COMP
 HV9891  LAPLACE CORR    -         -3.98  (seconds)                    DEFLEC18
 HV9891
 HV9891  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9891  Standards:
 HV9891         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9891            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9891  -------------------------------------------------------------------
 HV9891  NETWORK    1.48   3.10           0.63   0.58   1.58      0.07976947
 HV9891  -------------------------------------------------------------------
 HV9891  Click here for local accuracies and other accuracy information.
 HV9891
 HV9891.The horizontal coordinates were established by GPS observations
 HV9891.and adjusted by the National Geodetic Survey in June 2012.
 HV9891
 HV9891.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9891.been affixed to the stable North American tectonic plate. See 
 HV9891.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9891
 HV9891.The horizontal coordinates are valid at the epoch date displayed above
 HV9891.which is a decimal equivalence of Year/Month/Day.
 HV9891
 HV9891.The orthometric height was determined by GPS observations and a
 HV9891.high-resolution geoid model.
 HV9891
 HV9891.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9891.GEOID18 height accuracy estimate available here.
 HV9891
 HV9891.Click photographs - Photos may exist for this station.
 HV9891
 HV9891.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9891
 HV9891.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9891
 HV9891.The ellipsoidal height was determined by GPS observations
 HV9891.and is referenced to NAD 83.
 HV9891
 HV9891. The following values were computed from the NAD 83(2011) position.
 HV9891
 HV9891;                    North         East     Units Scale Factor Converg.
 HV9891;SPC MD       -   100,063.188   426,244.672   MT  0.99996422   +0 11 20.4
 HV9891;SPC MD       -   328,290.64  1,398,437.73   sFT  0.99996422   +0 11 20.4
 HV9891;UTM  18      - 4,270,175.392   351,997.929   MT  0.99986975   -1 03 33.6
 HV9891
 HV9891!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9891!SPC MD       -   0.99999813  x   0.99996422  =   0.99996235
 HV9891!UTM  18      -   0.99999813  x   0.99986975  =   0.99986788
 HV9891
 HV9891_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5199770175(NAD 83)
 HV9891
 HV9891                          SUPERSEDED SURVEY CONTROL
 HV9891
 HV9891  NAD 83(2007)-  38 34 03.77439(N)    076 41 55.85551(W) AD(2002.00) 0
 HV9891  ELLIP H (02/10/07)   11.943  (m)                       GP(2002.00)    
 HV9891  ELLIP H (08/30/02)   11.929  (m)                       GP(       ) 4 2
 HV9891  NAD 83(1993)-  38 34 03.77363(N)    076 41 55.85530(W) AD(       ) 1
 HV9891  ELLIP H (11/14/94)   11.989  (m)                       GP(       ) 4 2
 HV9891  ELLIP H (09/09/94)   11.962  (m)                       GP(       ) 4 1
 HV9891  NAD 83(1991)-  38 34 03.77371(N)    076 41 55.85654(W) AD(       ) 1
 HV9891
 HV9891.Superseded values are not recommended for survey control.
 HV9891
 HV9891.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9891.See file dsdata.pdf to determine how the superseded data were derived.
 HV9891
 HV9891_MARKER: DD = SURVEY DISK
 HV9891_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9891_STAMPING: T.S. 20376 PG
 HV9891_MARK LOGO: WSSC
 HV9891_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9891_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9891+STABILITY: SURFACE MOTION
 HV9891_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9891+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9891
 HV9891  HISTORY     - Date     Condition        Report By
 HV9891  HISTORY     - 1993     MONUMENTED       MSI
 HV9891
 HV9891                          STATION DESCRIPTION
 HV9891
 HV9891'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9891'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9891'APPROXIMATELY 0.6 MI (1.0 KM) WEST OF THE TOWN OF EAGLE HARBOR.  TO
 HV9891'REACH THE STATION FROM THE INTERSECTION OF CROOM ROAD (S.R. 382) AND
 HV9891'AQUASCO ROAD (S.R. 381), PROCEED SOUTH ALONG AQUASCO ROAD FOR 3.4 MI
 HV9891'(5.5 KM) TO THE INTERSECTION WITH EAGLE HARBOR ROAD.  TURN LEFT AND
 HV9891'TRAVEL EAST ON EAGLE HARBOR ROAD FOR 1.6 MI (2.6 KM) TO THE STATION
 HV9891'ON THE RIGHT.
 HV9891'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9891'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9891'T.S. 20376 PG.  THE DISK IS LOCATED 13.4 M (44.0 FT) NORTHWEST OF A
 HV9891'FENCE CORNER, 20.2 M (66.3 FT) SOUTHWEST OF THE CENTERLINE OF EAGLE
 HV9891'HARBOR ROAD, 0.5 M (1.6 FT) NORTH OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9892 ***********************************************************************
 HV9892  DESIGNATION -  20377
 HV9892  PID         -  HV9892
 HV9892  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9892  COUNTRY     -  US
 HV9892  USGS QUAD   -  BENEDICT (2016)
 HV9892
 HV9892                         *CURRENT SURVEY CONTROL
 HV9892  ______________________________________________________________________
 HV9892* NAD 83(2011) POSITION- 38 34 52.42723(N) 076 43 27.03026(W)   ADJUSTED
 HV9892* NAD 83(2011) ELLIP HT-    20.204 (meters)        (06/27/12)   ADJUSTED
 HV9892* NAD 83(2011) EPOCH   -  2010.00
 HV9892* NAVD 88 ORTHO HEIGHT -    53.7   (meters)      176.    (feet) GPS OBS
 HV9892  ______________________________________________________________________
 HV9892  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9892  GEOID HEIGHT    -        -33.810 (meters)                     GEOID93
 HV9892  GEOID HEIGHT    -        -33.477 (meters)                     GEOID18
 HV9892  NAD 83(2011) X  -  1,146,465.596 (meters)                     COMP
 HV9892  NAD 83(2011) Y  - -4,859,047.460 (meters)                     COMP
 HV9892  NAD 83(2011) Z  -  3,956,094.832 (meters)                     COMP
 HV9892  LAPLACE CORR    -         -3.47  (seconds)                    DEFLEC18
 HV9892
 HV9892  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9892  Standards:
 HV9892         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9892            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9892  -------------------------------------------------------------------
 HV9892  NETWORK    1.51   3.06           0.65   0.58   1.56      0.06132042
 HV9892  -------------------------------------------------------------------
 HV9892  Click here for local accuracies and other accuracy information.
 HV9892
 HV9892.The horizontal coordinates were established by GPS observations
 HV9892.and adjusted by the National Geodetic Survey in June 2012.
 HV9892
 HV9892.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9892.been affixed to the stable North American tectonic plate. See 
 HV9892.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9892
 HV9892.The horizontal coordinates are valid at the epoch date displayed above
 HV9892.which is a decimal equivalence of Year/Month/Day.
 HV9892
 HV9892.The orthometric height was determined by GPS observations and a
 HV9892.high-resolution geoid model.
 HV9892
 HV9892.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9892.GEOID18 height accuracy estimate available here.
 HV9892
 HV9892.Click photographs - Photos may exist for this station.
 HV9892
 HV9892.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9892
 HV9892.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9892
 HV9892.The ellipsoidal height was determined by GPS observations
 HV9892.and is referenced to NAD 83.
 HV9892
 HV9892. The following values were computed from the NAD 83(2011) position.
 HV9892
 HV9892;                    North         East     Units Scale Factor Converg.
 HV9892;SPC MD       -   101,556.387   424,032.999   MT  0.99996299   +0 10 23.2
 HV9892;SPC MD       -   333,189.58  1,391,181.60   sFT  0.99996299   +0 10 23.2
 HV9892;UTM  18      - 4,271,716.286   349,819.510   MT  0.99987775   -1 04 31.6
 HV9892
 HV9892!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9892!SPC MD       -   0.99999683  x   0.99996299  =   0.99995982
 HV9892!UTM  18      -   0.99999683  x   0.99987775  =   0.99987458
 HV9892
 HV9892_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4981971716(NAD 83)
 HV9892
 HV9892|---------------------------------------------------------------------|
 HV9892| PID    Reference Object                     Distance      Geod. Az  |
 HV9892|                                                           dddmmss.s |
 HV9892| HV0977 WO 7                                384.770 METERS 15559     |
 HV9892|---------------------------------------------------------------------|
 HV9892
 HV9892                          SUPERSEDED SURVEY CONTROL
 HV9892
 HV9892  NAD 83(2007)-  38 34 52.42747(N)    076 43 27.03091(W) AD(2002.00) 0
 HV9892  ELLIP H (02/10/07)   20.213  (m)                       GP(2002.00)    
 HV9892  ELLIP H (08/30/02)   20.201  (m)                       GP(       ) 4 2
 HV9892  NAD 83(1993)-  38 34 52.42671(N)    076 43 27.03071(W) AD(       ) 1
 HV9892  ELLIP H (11/14/94)   20.261  (m)                       GP(       ) 4 2
 HV9892  ELLIP H (09/09/94)   20.233  (m)                       GP(       ) 4 1
 HV9892  NAD 83(1991)-  38 34 52.42673(N)    076 43 27.03194(W) AD(       ) 1
 HV9892
 HV9892.Superseded values are not recommended for survey control.
 HV9892
 HV9892.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9892.See file dsdata.pdf to determine how the superseded data were derived.
 HV9892
 HV9892_MARKER: DD = SURVEY DISK
 HV9892_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9892_STAMPING: T.S. 20377 PG
 HV9892_MARK LOGO: WSSC
 HV9892_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9892_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9892+STABILITY: SURFACE MOTION
 HV9892_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9892+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9892
 HV9892  HISTORY     - Date     Condition        Report By
 HV9892  HISTORY     - 1993     MONUMENTED       MSI
 HV9892
 HV9892                          STATION DESCRIPTION
 HV9892
 HV9892'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9892'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9892'APPROXIMATELY 2.2 MI (3.5 KM) WEST OF THE TOWN OF EAGLE HARBOR.  TO
 HV9892'REACH THE STATION FROM THE INTERSECTION OF CROOM ROAD (S.R. 382) AND
 HV9892'AQUASCO ROAD (S.R. 381), PROCEED SOUTH ALONG AQUASCO ROAD FOR 3.2 MI
 HV9892'(5.1 KM) TO THE STATION ON THE RIGHT. ALTERNATIVELY, FROM THE
 HV9892'INTERSECTION OF AQUASCO ROAD AND EAGLE HARBOR ROAD, PROCEED NORTH ON
 HV9892'EAGLE HARBOR ROAD FOR 0.2 MI (0.3 KM) TO THE STATION ON THE LEFT.
 HV9892'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9892'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9892'T.S. 20377 PG.  THE DISK IS LOCATED 19.8 FT (6.0 M) WEST OF THE
 HV9892'CENTER LINE OF AQUASCO ROAD, 44.6 FT (13.6 M) SOUTHWEST OF POWER POLE
 HV9892'NO. 409, AND 28.5 FT (8.7 M) SOUTH OF A POWER POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9893 ***********************************************************************
 HV9893  DESIGNATION -  20378
 HV9893  PID         -  HV9893
 HV9893  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9893  COUNTRY     -  US
 HV9893  USGS QUAD   -  PISCATAWAY (2016)
 HV9893
 HV9893                         *CURRENT SURVEY CONTROL
 HV9893  ______________________________________________________________________
 HV9893* NAD 83(2011) POSITION- 38 42 14.65129(N) 076 57 29.76194(W)   ADJUSTED
 HV9893* NAD 83(2011) ELLIP HT-   -19.543 (meters)        (06/27/12)   ADJUSTED
 HV9893* NAD 83(2011) EPOCH   -  2010.00
 HV9893* NAVD 88 ORTHO HEIGHT -    13.0   (meters)       43.    (feet) GPS OBS
 HV9893  ______________________________________________________________________
 HV9893  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9893  GEOID HEIGHT    -        -32.950 (meters)                     GEOID93
 HV9893  GEOID HEIGHT    -        -32.578 (meters)                     GEOID18
 HV9893  NAD 83(2011) X  -  1,124,674.993 (meters)                     COMP
 HV9893  NAD 83(2011) Y  - -4,855,365.040 (meters)                     COMP
 HV9893  NAD 83(2011) Z  -  3,966,720.727 (meters)                     COMP
 HV9893  LAPLACE CORR    -         -3.99  (seconds)                    DEFLEC18
 HV9893
 HV9893  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9893  Standards:
 HV9893         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9893            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9893  -------------------------------------------------------------------
 HV9893  NETWORK    1.16   2.63           0.48   0.47   1.34     -0.00083144
 HV9893  -------------------------------------------------------------------
 HV9893  Click here for local accuracies and other accuracy information.
 HV9893
 HV9893.The horizontal coordinates were established by GPS observations
 HV9893.and adjusted by the National Geodetic Survey in June 2012.
 HV9893
 HV9893.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9893.been affixed to the stable North American tectonic plate. See 
 HV9893.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9893
 HV9893.The horizontal coordinates are valid at the epoch date displayed above
 HV9893.which is a decimal equivalence of Year/Month/Day.
 HV9893
 HV9893.The orthometric height was determined by GPS observations and a
 HV9893.high-resolution geoid model.
 HV9893
 HV9893.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9893.GEOID18 height accuracy estimate available here.
 HV9893
 HV9893.Click photographs - Photos may exist for this station.
 HV9893
 HV9893.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9893
 HV9893.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9893
 HV9893.The ellipsoidal height was determined by GPS observations
 HV9893.and is referenced to NAD 83.
 HV9893
 HV9893. The following values were computed from the NAD 83(2011) position.
 HV9893
 HV9893;                    North         East     Units Scale Factor Converg.
 HV9893;SPC MD       -   115,156.648   403,630.007   MT  0.99995432   +0 01 34.3
 HV9893;SPC MD       -   377,809.77  1,324,242.78   sFT  0.99995432   +0 01 34.3
 HV9893;SPC VA N     - 2,116,276.640 3,634,096.232   MT  0.99994952   +0 57 44.0
 HV9893;SPC VA N     - 6,943,150.94 11,922,864.05   sFT  0.99994952   +0 57 44.0
 HV9893;UTM  18      - 4,285,757.710   329,718.827   MT  0.99995707   -1 13 29.3
 HV9893
 HV9893!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9893!SPC MD       -   1.00000307  x   0.99995432  =   0.99995739
 HV9893!SPC VA N     -   1.00000307  x   0.99994952  =   0.99995259
 HV9893!UTM  18      -   1.00000307  x   0.99995707  =   0.99996014
 HV9893
 HV9893_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2971885757(NAD 83)
 HV9893
 HV9893                          SUPERSEDED SURVEY CONTROL
 HV9893
 HV9893  NAD 83(2007)-  38 42 14.65164(N)    076 57 29.76288(W) AD(2002.00) 0
 HV9893  ELLIP H (02/10/07)  -19.555  (m)                       GP(2002.00)    
 HV9893  ELLIP H (08/30/02)  -19.553  (m)                       GP(       ) 4 2
 HV9893  NAD 83(1993)-  38 42 14.65139(N)    076 57 29.76331(W) AD(       ) 1
 HV9893  ELLIP H (11/14/94)  -19.518  (m)                       GP(       ) 4 2
 HV9893  ELLIP H (09/09/94)  -19.523  (m)                       GP(       ) 4 1
 HV9893  NAD 83(1991)-  38 42 14.65057(N)    076 57 29.76398(W) AD(       ) 1
 HV9893
 HV9893.Superseded values are not recommended for survey control.
 HV9893
 HV9893.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9893.See file dsdata.pdf to determine how the superseded data were derived.
 HV9893
 HV9893_MARKER: DD = SURVEY DISK
 HV9893_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9893_STAMPING: T.S. 20378 PG
 HV9893_MARK LOGO: WSSC
 HV9893_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9893_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9893+STABILITY: SURFACE MOTION
 HV9893_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9893+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9893
 HV9893  HISTORY     - Date     Condition        Report By
 HV9893  HISTORY     - 1993     MONUMENTED       MSI
 HV9893
 HV9893                          STATION DESCRIPTION
 HV9893
 HV9893'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9893'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9893'APPROXIMATELY 2.8 MI (4.5 KM) EAST OF THE TOWN OF TANTALLON.  TO
 HV9893'REACH THE STATION FROM THE INTERSECTION OF PISCATAWAY ROAD (S.R. 223)
 HV9893'AND FLORAL PARK ROAD (S.R. 223), PROCEED EAST ALONG FLORAL PARK ROAD
 HV9893'FOR 0.4 MI (0.6 KM) TO THE STATION ON THE LEFT.
 HV9893'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9893'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9893'T.S. 20378 PG.  THE DISK IS LOCATED 23.0 FT (7.0 M) NORTH OF THE
 HV9893'CENTER LINE OF FLORAL PARK ROAD, 65.3 FT (19.9 M) EAST OF POWER POLE
 HV9893'NO. 5297, AND 750 FT (228.6 M) WEST OF THE CENTER LINE OF DANVILLE
 HV9893'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9894 ***********************************************************************
 HV9894  DESIGNATION -  20379
 HV9894  PID         -  HV9894
 HV9894  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9894  COUNTRY     -  US
 HV9894  USGS QUAD   -  LOWER MARLBORO (2016)
 HV9894
 HV9894                         *CURRENT SURVEY CONTROL
 HV9894  ______________________________________________________________________
 HV9894* NAD 83(2011) POSITION- 38 38 39.56206(N) 076 42 59.30682(W)   ADJUSTED
 HV9894* NAD 83(2011) ELLIP HT-    10.369 (meters)        (06/27/12)   ADJUSTED
 HV9894* NAD 83(2011) EPOCH   -  2010.00
 HV9894* NAVD 88 ORTHO HEIGHT -    43.7   (meters)      143.    (feet) GPS OBS
 HV9894  ______________________________________________________________________
 HV9894  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9894  GEOID HEIGHT    -        -33.710 (meters)                     GEOID93
 HV9894  GEOID HEIGHT    -        -33.375 (meters)                     GEOID18
 HV9894  NAD 83(2011) X  -  1,146,112.637 (meters)                     COMP
 HV9894  NAD 83(2011) Y  - -4,854,632.004 (meters)                     COMP
 HV9894  NAD 83(2011) Z  -  3,961,561.373 (meters)                     COMP
 HV9894  LAPLACE CORR    -         -4.01  (seconds)                    DEFLEC18
 HV9894
 HV9894  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9894  Standards:
 HV9894         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9894            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9894  -------------------------------------------------------------------
 HV9894  NETWORK    1.41   3.02           0.59   0.56   1.54      0.00469724
 HV9894  -------------------------------------------------------------------
 HV9894  Click here for local accuracies and other accuracy information.
 HV9894
 HV9894.The horizontal coordinates were established by GPS observations
 HV9894.and adjusted by the National Geodetic Survey in June 2012.
 HV9894
 HV9894.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9894.been affixed to the stable North American tectonic plate. See 
 HV9894.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9894
 HV9894.The horizontal coordinates are valid at the epoch date displayed above
 HV9894.which is a decimal equivalence of Year/Month/Day.
 HV9894
 HV9894.The orthometric height was determined by GPS observations and a
 HV9894.high-resolution geoid model.
 HV9894
 HV9894.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9894.GEOID18 height accuracy estimate available here.
 HV9894
 HV9894.Click photographs - Photos may exist for this station.
 HV9894
 HV9894.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9894
 HV9894.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9894
 HV9894.The ellipsoidal height was determined by GPS observations
 HV9894.and is referenced to NAD 83.
 HV9894
 HV9894. The following values were computed from the NAD 83(2011) position.
 HV9894
 HV9894;                    North         East     Units Scale Factor Converg.
 HV9894;SPC MD       -   108,561.967   424,682.240   MT  0.99995797   +0 10 40.6
 HV9894;SPC MD       -   356,173.72  1,393,311.65   sFT  0.99995797   +0 10 40.6
 HV9894;UTM  18      - 4,278,705.457   350,621.270   MT  0.99987479   -1 04 19.6
 HV9894
 HV9894!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9894!SPC MD       -   0.99999837  x   0.99995797  =   0.99995634
 HV9894!UTM  18      -   0.99999837  x   0.99987479  =   0.99987316
 HV9894
 HV9894_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5062178705(NAD 83)
 HV9894
 HV9894                          SUPERSEDED SURVEY CONTROL
 HV9894
 HV9894  NAD 83(2007)-  38 38 39.56220(N)    076 42 59.30775(W) AD(2002.00) 0
 HV9894  ELLIP H (02/10/07)   10.354  (m)                       GP(2002.00)    
 HV9894  ELLIP H (08/30/02)   10.347  (m)                       GP(       ) 4 2
 HV9894  NAD 83(1993)-  38 38 39.56165(N)    076 42 59.30779(W) AD(       ) 1
 HV9894  ELLIP H (11/14/94)   10.393  (m)                       GP(       ) 4 2
 HV9894  ELLIP H (09/09/94)   10.371  (m)                       GP(       ) 4 1
 HV9894  NAD 83(1991)-  38 38 39.56125(N)    076 42 59.30859(W) AD(       ) 1
 HV9894
 HV9894.Superseded values are not recommended for survey control.
 HV9894
 HV9894.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9894.See file dsdata.pdf to determine how the superseded data were derived.
 HV9894
 HV9894_MARKER: DD = SURVEY DISK
 HV9894_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9894_STAMPING: T.S. 20379 PG
 HV9894_MARK LOGO: WSSC
 HV9894_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9894_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9894+STABILITY: SURFACE MOTION
 HV9894_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9894+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9894
 HV9894  HISTORY     - Date     Condition        Report By
 HV9894  HISTORY     - 1993     MONUMENTED       MSI
 HV9894
 HV9894                          STATION DESCRIPTION
 HV9894
 HV9894'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9894'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9894'APPROXIMATELY 3.2 MI (5.1 KM) EAST OF THE TOWN OF BADEN.  TO REACH
 HV9894'THE STATION FROM THE INTERSECTION OF BADEN-WESTWOOD ROAD AND CROOM
 HV9894'ROAD (S.R. 382), PROCEED SOUTH ALONG CROOM ROAD FOR 0.2 MI (0.3 KM)
 HV9894'TO THE STATION ON THE RIGHT.
 HV9894'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9894'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9894'T.S. 20379 PG.  THE DISK IS LOCATED 19.4 FT (5.9 M) WEST OF THE
 HV9894'CENTER LINE OF CROOM ROAD, 48.5 FT (14.8 M) SOUTH OF CENTER OF DRIVE
 HV9894'WAY FOR HOUSE NO. 17851, AND 113.2 FT (34.5 M) NORTH OF POWER POLE
 HV9894'NO. 15.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2600 ***********************************************************************
 JV2600  DESIGNATION -  2038 WSSC
 JV2600  PID         -  JV2600
 JV2600  STATE/COUNTY-  MD/MONTGOMERY
 JV2600  COUNTRY     -  US
 JV2600  USGS QUAD   -  GAITHERSBURG (2016)
 JV2600
 JV2600                         *CURRENT SURVEY CONTROL
 JV2600  ______________________________________________________________________
 JV2600* NAD 83(1986) POSITION- 39 11 17.     (N) 077 11 11.     (W)   SCALED
 JV2600* NAVD 88 ORTHO HEIGHT -   135.59  (+/-2cm)      444.8   (feet) VERTCON3
 JV2600  ______________________________________________________________________
 JV2600  GEOID HEIGHT    -        -31.766 (meters)                     GEOID18
 JV2600  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2600
 JV2600.The horizontal coordinates were scaled from a map and have
 JV2600.an estimated accuracy of +/- 6 seconds.
 JV2600
 JV2600.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2600.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2600
 JV2600.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2600.GEOID18 height accuracy estimate available here.
 JV2600
 JV2600.The vertical order pertains to the NGVD 29 superseded value.
 JV2600
 JV2600.Click photographs - Photos may exist for this station.
 JV2600
 JV2600;                    North         East    Units  Estimated Accuracy
 JV2600;SPC MD       -   168,900.      383,900.      MT  (+/- 180 meters Scaled)
 JV2600
 JV2600_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ111399(NAD 83)
 JV2600
 JV2600                          SUPERSEDED SURVEY CONTROL
 JV2600
 JV2600  NGVD 29 (11/26/84)  135.804  (m)          445.55   (f) ADJUSTED    2 0
 JV2600
 JV2600.Superseded values are not recommended for survey control.
 JV2600
 JV2600.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2600.See file dsdata.pdf to determine how the superseded data were derived.
 JV2600
 JV2600_MARKER: DD = SURVEY DISK
 JV2600_SETTING: 0 = UNSPECIFIED SETTING
 JV2600_SP_SET: IRON PIPE
 JV2600_STAMPING: 2038
 JV2600_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2600
 JV2600  HISTORY     - Date     Condition        Report By
 JV2600  HISTORY     - UNK      MONUMENTED       WSSC
 JV2600  HISTORY     - 1946     GOOD             WSSC
 JV2600
 JV2600                          STATION DESCRIPTION
 JV2600
 JV2600'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2600'1.3 MI S FROM GOSHEN.
 JV2600'ABOUT 1.3 MILES SOUTH ALONG THE GOSHEN-GAITHERSBURG ROAD FROM THE
 JV2600'GENERAL STORE AT GOSHEN, MONTGOMERY COUNTY, 90 FEET NORTH OF THE
 JV2600'INTERSECTION OF THE REDLAND ROAD, 28 FEET EAST OF THE CENTER
 JV2600'LINE OF THE GAITHERSBURG ROAD, 18 FEET NORTH OF A 6-INCH POPLAR
 JV2600'TREE, 10.1 FEET SOUTH OF A 24-INCH MAPLE TREE, AND 8 FEET EAST
 JV2600'OF A FENCE.  A WASHINGTON SUBURAN SANITARY DISTRICT STANDARD DISK,
 JV2600'STAMPED 2038 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9895 ***********************************************************************
 HV9895  DESIGNATION -  20380
 HV9895  PID         -  HV9895
 HV9895  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9895  COUNTRY     -  US
 HV9895  USGS QUAD   -  LOWER MARLBORO (2016)
 HV9895
 HV9895                         *CURRENT SURVEY CONTROL
 HV9895  ______________________________________________________________________
 HV9895* NAD 83(2011) POSITION- 38 40 36.29463(N) 076 43 19.44291(W)   ADJUSTED
 HV9895* NAD 83(2011) ELLIP HT-    10.102 (meters)        (06/27/12)   ADJUSTED
 HV9895* NAD 83(2011) EPOCH   -  2010.00
 HV9895* NAVD 88 ORTHO HEIGHT -    43.4   (meters)      142.    (feet) GPS OBS
 HV9895  ______________________________________________________________________
 HV9895  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9895  GEOID HEIGHT    -        -33.640 (meters)                     GEOID93
 HV9895  GEOID HEIGHT    -        -33.303 (meters)                     GEOID18
 HV9895  NAD 83(2011) X  -  1,145,122.201 (meters)                     COMP
 HV9895  NAD 83(2011) Y  - -4,852,555.119 (meters)                     COMP
 HV9895  NAD 83(2011) Z  -  3,964,371.956 (meters)                     COMP
 HV9895  LAPLACE CORR    -         -4.27  (seconds)                    DEFLEC18
 HV9895
 HV9895  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9895  Standards:
 HV9895         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9895            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9895  -------------------------------------------------------------------
 HV9895  NETWORK    1.41   3.06           0.60   0.55   1.56      0.08169833
 HV9895  -------------------------------------------------------------------
 HV9895  Click here for local accuracies and other accuracy information.
 HV9895
 HV9895.The horizontal coordinates were established by GPS observations
 HV9895.and adjusted by the National Geodetic Survey in June 2012.
 HV9895
 HV9895.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9895.been affixed to the stable North American tectonic plate. See 
 HV9895.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9895
 HV9895.The horizontal coordinates are valid at the epoch date displayed above
 HV9895.which is a decimal equivalence of Year/Month/Day.
 HV9895
 HV9895.The orthometric height was determined by GPS observations and a
 HV9895.high-resolution geoid model.
 HV9895
 HV9895.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9895.GEOID18 height accuracy estimate available here.
 HV9895
 HV9895.Click photographs - Photos may exist for this station.
 HV9895
 HV9895.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9895
 HV9895.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9895
 HV9895.The ellipsoidal height was determined by GPS observations
 HV9895.and is referenced to NAD 83.
 HV9895
 HV9895. The following values were computed from the NAD 83(2011) position.
 HV9895
 HV9895;                    North         East     Units Scale Factor Converg.
 HV9895;SPC MD       -   112,159.844   424,184.355   MT  0.99995585   +0 10 28.0
 HV9895;SPC MD       -   367,977.75  1,391,678.17   sFT  0.99995585   +0 10 28.0
 HV9895;UTM  18      - 4,282,313.049   350,202.053   MT  0.99987633   -1 04 34.9
 HV9895
 HV9895!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9895!SPC MD       -   0.99999841  x   0.99995585  =   0.99995427
 HV9895!UTM  18      -   0.99999841  x   0.99987633  =   0.99987475
 HV9895
 HV9895_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5020282313(NAD 83)
 HV9895
 HV9895                          SUPERSEDED SURVEY CONTROL
 HV9895
 HV9895  NAD 83(2007)-  38 40 36.29478(N)    076 43 19.44394(W) AD(2002.00) 0
 HV9895  ELLIP H (02/10/07)   10.081  (m)                       GP(2002.00)    
 HV9895  ELLIP H (08/30/02)   10.075  (m)                       GP(       ) 4 2
 HV9895  NAD 83(1993)-  38 40 36.29431(N)    076 43 19.44406(W) AD(       ) 1
 HV9895  ELLIP H (11/14/94)   10.116  (m)                       GP(       ) 4 2
 HV9895  ELLIP H (09/09/94)   10.096  (m)                       GP(       ) 4 1
 HV9895  NAD 83(1991)-  38 40 36.29385(N)    076 43 19.44468(W) AD(       ) 1
 HV9895
 HV9895.Superseded values are not recommended for survey control.
 HV9895
 HV9895.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9895.See file dsdata.pdf to determine how the superseded data were derived.
 HV9895
 HV9895_MARKER: DD = SURVEY DISK
 HV9895_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9895_STAMPING: T.S. 20380 PG
 HV9895_MARK LOGO: WSSC
 HV9895_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9895_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9895+STABILITY: SURFACE MOTION
 HV9895_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9895+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9895
 HV9895  HISTORY     - Date     Condition        Report By
 HV9895  HISTORY     - 1993     MONUMENTED       MSI
 HV9895
 HV9895                          STATION DESCRIPTION
 HV9895
 HV9895'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9895'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9895'APPROXIMATELY 2.8 MI (4.5 KM) NORTHEAST OF THE TOWN OF BADEN.  TO
 HV9895'REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (U.S. 301)
 HV9895'AND CROOM ROAD (S.R. 382), PROCEED SOUTHEAST ALONG CROOM ROAD FOR 10.7
 HV9895'MI (17.2 KM) TO THE INTERSECTION WITH RIVER AIRPORT ROAD, AND THE
 HV9895'STATION ON THE LEFT.
 HV9895'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9895'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9895'T.S. 20380 PG.  THE DISK IS LOCATED 86.6 FT (26.4 M) NORTHEAST OF
 HV9895'THE CENTER LINE OF CROOM ROAD, 16.4 FT (5.0 M) NORTHWEST OF THE
 HV9895'CENTER LINE OF RIVER AIRPORT ROAD, AND 81.3 FT (24.8 M) NORTH OF A
 HV9895'FENCE CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9896 ***********************************************************************
 HV9896  DESIGNATION -  20381
 HV9896  PID         -  HV9896
 HV9896  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9896  COUNTRY     -  US
 HV9896  USGS QUAD   -  LOWER MARLBORO (2016)
 HV9896
 HV9896                         *CURRENT SURVEY CONTROL
 HV9896  ______________________________________________________________________
 HV9896* NAD 83(2011) POSITION- 38 39 43.51791(N) 076 44 55.82946(W)   ADJUSTED
 HV9896* NAD 83(2011) ELLIP HT-    27.872 (meters)        (06/27/12)   ADJUSTED
 HV9896* NAD 83(2011) EPOCH   -  2010.00
 HV9896* NAVD 88 ORTHO HEIGHT -    61.1   (meters)      200.    (feet) GPS OBS
 HV9896  ______________________________________________________________________
 HV9896  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9896  GEOID HEIGHT    -        -33.610 (meters)                     GEOID93
 HV9896  GEOID HEIGHT    -        -33.271 (meters)                     GEOID18
 HV9896  NAD 83(2011) X  -  1,143,090.765 (meters)                     COMP
 HV9896  NAD 83(2011) Y  - -4,854,092.985 (meters)                     COMP
 HV9896  NAD 83(2011) Z  -  3,963,112.427 (meters)                     COMP
 HV9896  LAPLACE CORR    -         -4.41  (seconds)                    DEFLEC18
 HV9896
 HV9896  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9896  Standards:
 HV9896         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9896            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9896  -------------------------------------------------------------------
 HV9896  NETWORK    1.46   3.23           0.61   0.58   1.65      0.07149133
 HV9896  -------------------------------------------------------------------
 HV9896  Click here for local accuracies and other accuracy information.
 HV9896
 HV9896.The horizontal coordinates were established by GPS observations
 HV9896.and adjusted by the National Geodetic Survey in June 2012.
 HV9896
 HV9896.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9896.been affixed to the stable North American tectonic plate. See 
 HV9896.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9896
 HV9896.The horizontal coordinates are valid at the epoch date displayed above
 HV9896.which is a decimal equivalence of Year/Month/Day.
 HV9896
 HV9896.The orthometric height was determined by GPS observations and a
 HV9896.high-resolution geoid model.
 HV9896
 HV9896.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9896.GEOID18 height accuracy estimate available here.
 HV9896
 HV9896.Click photographs - Photos may exist for this station.
 HV9896
 HV9896.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9896
 HV9896.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9896
 HV9896.The ellipsoidal height was determined by GPS observations
 HV9896.and is referenced to NAD 83.
 HV9896
 HV9896. The following values were computed from the NAD 83(2011) position.
 HV9896
 HV9896;                    North         East     Units Scale Factor Converg.
 HV9896;SPC MD       -   110,525.753   421,859.090   MT  0.99995677   +0 09 27.5
 HV9896;SPC MD       -   362,616.57  1,384,049.36   sFT  0.99995677   +0 09 27.5
 HV9896;UTM  18      - 4,280,730.216   347,841.855   MT  0.99988511   -1 05 33.9
 HV9896
 HV9896!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9896!SPC MD       -   0.99999563  x   0.99995677  =   0.99995240
 HV9896!UTM  18      -   0.99999563  x   0.99988511  =   0.99988074
 HV9896
 HV9896_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4784180730(NAD 83)
 HV9896
 HV9896                          SUPERSEDED SURVEY CONTROL
 HV9896
 HV9896  NAD 83(2007)-  38 39 43.51806(N)    076 44 55.83051(W) AD(2002.00) 0
 HV9896  ELLIP H (02/10/07)   27.849  (m)                       GP(2002.00)    
 HV9896  ELLIP H (08/30/02)   27.843  (m)                       GP(       ) 4 2
 HV9896  NAD 83(1993)-  38 39 43.51755(N)    076 44 55.83063(W) AD(       ) 1
 HV9896  ELLIP H (11/14/94)   27.886  (m)                       GP(       ) 4 2
 HV9896  ELLIP H (09/09/94)   27.869  (m)                       GP(       ) 4 1
 HV9896  NAD 83(1991)-  38 39 43.51698(N)    076 44 55.83122(W) AD(       ) 1
 HV9896
 HV9896.Superseded values are not recommended for survey control.
 HV9896
 HV9896.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9896.See file dsdata.pdf to determine how the superseded data were derived.
 HV9896
 HV9896_MARKER: DD = SURVEY DISK
 HV9896_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9896_STAMPING: T.S. 20381 PG
 HV9896_MARK LOGO: WSSC
 HV9896_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9896_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9896+STABILITY: SURFACE MOTION
 HV9896_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9896+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9896
 HV9896  HISTORY     - Date     Condition        Report By
 HV9896  HISTORY     - 1993     MONUMENTED       MSI
 HV9896
 HV9896                          STATION DESCRIPTION
 HV9896
 HV9896'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9896'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9896'APPROXIMATELY 1.3 MI (2.1 KM) EAST OF THE TOWN OF BADEN.  TO REACH
 HV9896'THE STATION FROM THE INTERSECTION OF BADEN-WESTWOOD ROAD AND CROOM
 HV9896'ROAD (S.R. 382), PROCEED WEST ON BADEN-WESTWOOD ROAD FOR 2.2 MI
 HV9896'(3.5 KM) TO THE STATION ON THE RIGHT.
 HV9896'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9896'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9896'T.S. 20381 PG.  THE DISK IS LOCATED 4.5 M (14.8 FT) NORTHEAST OF
 HV9896'THE CENTER LINE OF BADEN-WESTWOOOD ROAD, 20 M (65.6 FT) NORTHWEST OF
 HV9896'THE NORTH END OF A CONCRETE CULVERT, AND 21.8 M (71.5 FT) EAST OF THE
 HV9896'CENTERLINE OF THE DRIVEWAY TO HOUSE NO. 14803.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9897 ***********************************************************************
 HV9897  DESIGNATION -  20382
 HV9897  PID         -  HV9897
 HV9897  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9897  COUNTRY     -  US
 HV9897  USGS QUAD   -  LOWER MARLBORO (2016)
 HV9897
 HV9897                         *CURRENT SURVEY CONTROL
 HV9897  ______________________________________________________________________
 HV9897* NAD 83(2011) POSITION- 38 42 44.64559(N) 076 44 49.43881(W)   ADJUSTED
 HV9897* NAD 83(2011) ELLIP HT-    10.820 (meters)        (06/27/12)   ADJUSTED
 HV9897* NAD 83(2011) EPOCH   -  2010.00
 HV9897* NAVD 88 ORTHO HEIGHT -    43.9   (meters)      144.    (feet) GPS OBS
 HV9897  ______________________________________________________________________
 HV9897  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9897  GEOID HEIGHT    -        -33.510 (meters)                     GEOID93
 HV9897  GEOID HEIGHT    -        -33.167 (meters)                     GEOID18
 HV9897  NAD 83(2011) X  -  1,142,437.753 (meters)                     COMP
 HV9897  NAD 83(2011) Y  - -4,850,646.413 (meters)                     COMP
 HV9897  NAD 83(2011) Z  -  3,967,461.457 (meters)                     COMP
 HV9897  LAPLACE CORR    -         -5.11  (seconds)                    DEFLEC18
 HV9897
 HV9897  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9897  Standards:
 HV9897         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9897            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9897  -------------------------------------------------------------------
 HV9897  NETWORK    1.29   2.94           0.55   0.50   1.50      0.01863241
 HV9897  -------------------------------------------------------------------
 HV9897  Click here for local accuracies and other accuracy information.
 HV9897
 HV9897.The horizontal coordinates were established by GPS observations
 HV9897.and adjusted by the National Geodetic Survey in June 2012.
 HV9897
 HV9897.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9897.been affixed to the stable North American tectonic plate. See 
 HV9897.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9897
 HV9897.The horizontal coordinates are valid at the epoch date displayed above
 HV9897.which is a decimal equivalence of Year/Month/Day.
 HV9897
 HV9897.The orthometric height was determined by GPS observations and a
 HV9897.high-resolution geoid model.
 HV9897
 HV9897.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9897.GEOID18 height accuracy estimate available here.
 HV9897
 HV9897.Click photographs - Photos may exist for this station.
 HV9897
 HV9897.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9897
 HV9897.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9897
 HV9897.The ellipsoidal height was determined by GPS observations
 HV9897.and is referenced to NAD 83.
 HV9897
 HV9897. The following values were computed from the NAD 83(2011) position.
 HV9897
 HV9897;                    North         East     Units Scale Factor Converg.
 HV9897;SPC MD       -   116,111.158   421,998.114   MT  0.99995389   +0 09 31.5
 HV9897;SPC MD       -   380,941.36  1,384,505.48   sFT  0.99995389   +0 09 31.5
 HV9897;UTM  18      - 4,286,310.860   348,102.770   MT  0.99988413   -1 05 34.2
 HV9897
 HV9897!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9897!SPC MD       -   0.99999830  x   0.99995389  =   0.99995219
 HV9897!UTM  18      -   0.99999830  x   0.99988413  =   0.99988243
 HV9897
 HV9897_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4810286310(NAD 83)
 HV9897
 HV9897                          SUPERSEDED SURVEY CONTROL
 HV9897
 HV9897  NAD 83(2007)-  38 42 44.64574(N)    076 44 49.43996(W) AD(2002.00) 0
 HV9897  ELLIP H (02/10/07)   10.791  (m)                       GP(2002.00)    
 HV9897  ELLIP H (08/30/02)   10.785  (m)                       GP(       ) 4 2
 HV9897  NAD 83(1993)-  38 42 44.64539(N)    076 44 49.44010(W) AD(       ) 1
 HV9897  ELLIP H (11/14/94)   10.820  (m)                       GP(       ) 4 2
 HV9897  ELLIP H (09/09/94)   10.800  (m)                       GP(       ) 4 1
 HV9897  NAD 83(1991)-  38 42 44.64501(N)    076 44 49.44058(W) AD(       ) 1
 HV9897
 HV9897.Superseded values are not recommended for survey control.
 HV9897
 HV9897.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9897.See file dsdata.pdf to determine how the superseded data were derived.
 HV9897
 HV9897_MARKER: DD = SURVEY DISK
 HV9897_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9897_STAMPING: T.S. 20382 PG
 HV9897_MARK LOGO: WSSC
 HV9897_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9897_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9897+STABILITY: SURFACE MOTION
 HV9897_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9897+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9897
 HV9897  HISTORY     - Date     Condition        Report By
 HV9897  HISTORY     - 1993     MONUMENTED       MSI
 HV9897
 HV9897                          STATION DESCRIPTION
 HV9897
 HV9897'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9897'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, IN THE TOWN
 HV9897'OF NAYLOR.  TO REACH THE STATION FROM THE INTERSECTION OF CANDY HILL
 HV9897'ROAD AND CROOM ROAD (S.R. 382), PROCEED WEST ALONG CANDY HILL ROAD
 HV9897'FOR APPROXIMATELY 300 FT (91.4 M) TO THE STATION ON THE RIGHT.
 HV9897'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9897'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9897'T.S. 20382 PG.  THE DISK IS LOCATED 16.8 FT (5.1 M) NORTH OF THE
 HV9897'CENTERLINE OF CANDY HILL ROAD, 29.8 FT (9.1 M) EAST OF THE NORTH END
 HV9897'OF A CONCRETE CULVERT, AND 80.5 FT (24.5 M) EAST-NORTHEAST OF A POWER
 HV9897'POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9898 ***********************************************************************
 HV9898  DESIGNATION -  20383
 HV9898  PID         -  HV9898
 HV9898  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9898  COUNTRY     -  US
 HV9898  USGS QUAD   -  ALEXANDRIA (2019)
 HV9898
 HV9898                         *CURRENT SURVEY CONTROL
 HV9898  ______________________________________________________________________
 HV9898* NAD 83(2011) POSITION- 38 46 33.73738(N) 077 00 45.60663(W)   ADJUSTED
 HV9898* NAD 83(2011) ELLIP HT-    13.691 (meters)        (06/27/12)   ADJUSTED
 HV9898* NAD 83(2011) EPOCH   -  2010.00
 HV9898* NAVD 88 ORTHO HEIGHT -    46.0   (meters)      151.    (feet) GPS OBS
 HV9898  ______________________________________________________________________
 HV9898  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9898  GEOID HEIGHT    -        -32.690 (meters)                     GEOID93
 HV9898  GEOID HEIGHT    -        -32.330 (meters)                     GEOID18
 HV9898  NAD 83(2011) X  -  1,118,946.650 (meters)                     COMP
 HV9898  NAD 83(2011) Y  - -4,851,584.287 (meters)                     COMP
 HV9898  NAD 83(2011) Z  -  3,972,973.078 (meters)                     COMP
 HV9898  LAPLACE CORR    -         -3.02  (seconds)                    DEFLEC18
 HV9898
 HV9898  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9898  Standards:
 HV9898         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9898            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9898  -------------------------------------------------------------------
 HV9898  NETWORK    1.11   2.53           0.47   0.44   1.29      0.01011271
 HV9898  -------------------------------------------------------------------
 HV9898  Click here for local accuracies and other accuracy information.
 HV9898
 HV9898.The horizontal coordinates were established by GPS observations
 HV9898.and adjusted by the National Geodetic Survey in June 2012.
 HV9898
 HV9898.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9898.been affixed to the stable North American tectonic plate. See 
 HV9898.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9898
 HV9898.The horizontal coordinates are valid at the epoch date displayed above
 HV9898.which is a decimal equivalence of Year/Month/Day.
 HV9898
 HV9898.The orthometric height was determined by GPS observations and a
 HV9898.high-resolution geoid model.
 HV9898
 HV9898.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9898.GEOID18 height accuracy estimate available here.
 HV9898
 HV9898.Click photographs - Photos may exist for this station.
 HV9898
 HV9898.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9898
 HV9898.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9898
 HV9898.The ellipsoidal height was determined by GPS observations
 HV9898.and is referenced to NAD 83.
 HV9898
 HV9898. The following values were computed from the NAD 83(2011) position.
 HV9898
 HV9898;                    North         East     Units Scale Factor Converg.
 HV9898;SPC MD       -   123,144.762   398,899.175   MT  0.99995136   -0 00 28.6
 HV9898;SPC MD       -   404,017.44  1,308,721.71   sFT  0.99995136   -0 00 28.6
 HV9898;SPC VA N     - 2,124,186.382 3,629,235.534   MT  0.99995220   +0 55 41.8
 HV9898;SPC VA N     - 6,969,101.49 11,906,916.91   sFT  0.99995220   +0 55 41.8
 HV9898;UTM  18      - 4,293,847.391   325,163.587   MT  0.99997643   -1 15 38.9
 HV9898
 HV9898!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9898!SPC MD       -   0.99999785  x   0.99995136  =   0.99994921
 HV9898!SPC VA N     -   0.99999785  x   0.99995220  =   0.99995005
 HV9898!UTM  18      -   0.99999785  x   0.99997643  =   0.99997428
 HV9898
 HV9898_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2516393847(NAD 83)
 HV9898
 HV9898                          SUPERSEDED SURVEY CONTROL
 HV9898
 HV9898  NAD 83(2007)-  38 46 33.73793(N)    077 00 45.60742(W) AD(2002.00) 0
 HV9898  ELLIP H (02/10/07)   13.697  (m)                       GP(2002.00)    
 HV9898  ELLIP H (08/30/02)   13.705  (m)                       GP(       ) 4 2
 HV9898  NAD 83(1993)-  38 46 33.73789(N)    077 00 45.60802(W) AD(       ) 1
 HV9898  ELLIP H (11/14/94)   13.717  (m)                       GP(       ) 4 2
 HV9898  ELLIP H (09/09/94)   13.715  (m)                       GP(       ) 4 1
 HV9898  NAD 83(1991)-  38 46 33.73760(N)    077 00 45.60816(W) AD(       ) 1
 HV9898
 HV9898.Superseded values are not recommended for survey control.
 HV9898
 HV9898.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9898.See file dsdata.pdf to determine how the superseded data were derived.
 HV9898
 HV9898_MARKER: DD = SURVEY DISK
 HV9898_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9898_STAMPING: T.S. 20383 PG
 HV9898_MARK LOGO: WSSC
 HV9898_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9898_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9898+STABILITY: SURFACE MOTION
 HV9898_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9898+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2012
 HV9898
 HV9898  HISTORY     - Date     Condition        Report By
 HV9898  HISTORY     - 1993     MONUMENTED       MSI
 HV9898  HISTORY     - 19980709 GOOD             DMW
 HV9898  HISTORY     - 20050605 GOOD             GEOCAC
 HV9898  HISTORY     - 20120923 GOOD             WOOLPT
 HV9898
 HV9898                          STATION DESCRIPTION
 HV9898
 HV9898'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9898'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9898'APPROXIMATELY 2.6 MI (4.2 KM) SOUTH OF THE TOWN OF FOREST HEIGHTS. TO
 HV9898'REACH THE STATION FROM THE INTERSECTION OF INDIAN HEAD HIGHWAY (S.R.
 HV9898'210) AND OXEN HILL ROAD, PROCEED SOUTH ON OXEN HILL ROAD FOR 1.8 MI
 HV9898'(2.9 KM) TO THE INTERSECTION WITH FORT FOOTE ROAD.  TURN RIGHT AND
 HV9898'TRAVEL WEST ON FORT FOOTE ROAD FOR 0.5 MI (0.8 KM) TO THE STATION ON
 HV9898'THE LEFT.
 HV9898'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9898'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9898'T.S. 20383 PG.  THE DISK IS LOCATED 79.0 FT (24.1 M) EAST OF THE
 HV9898'SOUTH CORNER OF A CONCRETE CULVERT WHICH LIES EAST OF THE ENTRANCE
 HV9898'ROAD, 84.0 FT (25.6 M) EAST OF THE SOUTH CORNER OF A CONCRETE CULVERT
 HV9898'WHICH LIES WEST OF THE ENTRANCE ROAD, AND 60.4 FT (18.4 M) NORTHEAST
 HV9898'OF A MOTOR VEHICLES PROHIBITED SIGN.
 HV9898
 HV9898                          STATION RECOVERY (1998)
 HV9898
 HV9898'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 HV9898'RECOVERED IN GOOD CONDITION.
 HV9898
 HV9898                          STATION RECOVERY (2005)
 HV9898
 HV9898'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV9898'MARK FOUND IN GOOD CONDITION IN THE FORT FOOTE NEIGHBORHOOD RECREATION
 HV9898'CENTER, IN A GRASSY FIELD BETWEEN THE ROAD AND A SOCCER GOALPOST.
 HV9898'
 HV9898'STATION MONUMENT IS (A) ABOUT 18.5 FEET WEST OF THE NORTHERN OF TWO
 HV9898'TUBULAR STEEL POSTS SUPPORTING THE SOCCER GOAL, AND (B) ABOUT 29.2
 HV9898'FEET NORTHWEST OF THE SOUTHERN TUBULAR STEEL POST SUPPORT.
 HV9898'
 HV9898'DISTANCES TO CULVERTS REPORTED IN 1993 NOT VERIFIED.
 HV9898
 HV9898                          STATION RECOVERY (2012)
 HV9898
 HV9898'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 HV9898'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9899 ***********************************************************************
 HV9899  DESIGNATION -  20384
 HV9899  PID         -  HV9899
 HV9899  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9899  COUNTRY     -  US
 HV9899  USGS QUAD   -  BRISTOL (2016)
 HV9899
 HV9899                         *CURRENT SURVEY CONTROL
 HV9899  ______________________________________________________________________
 HV9899* NAD 83(2011) POSITION- 38 46 38.00531(N) 076 43 33.70228(W)   ADJUSTED
 HV9899* NAD 83(2011) ELLIP HT-   -10.835 (meters)        (06/27/12)   ADJUSTED
 HV9899* NAD 83(2011) EPOCH   -  2010.00
 HV9899* NAVD 88 ORTHO HEIGHT -    22.2   (meters)       73.    (feet) GPS OBS
 HV9899  ______________________________________________________________________
 HV9899  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9899  GEOID HEIGHT    -        -33.430 (meters)                     GEOID93
 HV9899  GEOID HEIGHT    -        -33.082 (meters)                     GEOID18
 HV9899  NAD 83(2011) X  -  1,143,180.802 (meters)                     COMP
 HV9899  NAD 83(2011) Y  - -4,845,826.885 (meters)                     COMP
 HV9899  NAD 83(2011) Z  -  3,973,060.318 (meters)                     COMP
 HV9899  LAPLACE CORR    -         -5.95  (seconds)                    DEFLEC18
 HV9899
 HV9899  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9899  Standards:
 HV9899         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9899            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9899  -------------------------------------------------------------------
 HV9899  NETWORK    1.30   2.78           0.56   0.50   1.42     -0.01331090
 HV9899  -------------------------------------------------------------------
 HV9899  Click here for local accuracies and other accuracy information.
 HV9899
 HV9899.The horizontal coordinates were established by GPS observations
 HV9899.and adjusted by the National Geodetic Survey in June 2012.
 HV9899
 HV9899.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9899.been affixed to the stable North American tectonic plate. See 
 HV9899.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9899
 HV9899.The horizontal coordinates are valid at the epoch date displayed above
 HV9899.which is a decimal equivalence of Year/Month/Day.
 HV9899
 HV9899.The orthometric height was determined by GPS observations and a
 HV9899.high-resolution geoid model.
 HV9899
 HV9899.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9899.GEOID18 height accuracy estimate available here.
 HV9899
 HV9899.Click photographs - Photos may exist for this station.
 HV9899
 HV9899.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9899
 HV9899.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9899
 HV9899.The ellipsoidal height was determined by GPS observations
 HV9899.and is referenced to NAD 83.
 HV9899
 HV9899. The following values were computed from the NAD 83(2011) position.
 HV9899
 HV9899;                    North         East     Units Scale Factor Converg.
 HV9899;SPC MD       -   123,312.010   423,806.222   MT  0.99995132   +0 10 19.0
 HV9899;SPC MD       -   404,566.15  1,390,437.58   sFT  0.99995132   +0 10 19.0
 HV9899;UTM  18      - 4,293,469.958   350,067.688   MT  0.99987682   -1 04 52.3
 HV9899
 HV9899!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9899!SPC MD       -   1.00000170  x   0.99995132  =   0.99995302
 HV9899!UTM  18      -   1.00000170  x   0.99987682  =   0.99987852
 HV9899
 HV9899_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5006793469(NAD 83)
 HV9899
 HV9899                          SUPERSEDED SURVEY CONTROL
 HV9899
 HV9899  NAD 83(2007)-  38 46 38.00554(N)    076 43 33.70344(W) AD(2002.00) 0
 HV9899  ELLIP H (02/10/07)  -10.858  (m)                       GP(2002.00)    
 HV9899  ELLIP H (08/30/02)  -10.864  (m)                       GP(       ) 4 2
 HV9899  NAD 83(1993)-  38 46 38.00543(N)    076 43 33.70364(W) AD(       ) 1
 HV9899  ELLIP H (11/14/94)  -10.853  (m)                       GP(       ) 4 2
 HV9899  ELLIP H (09/09/94)  -10.868  (m)                       GP(       ) 4 1
 HV9899  NAD 83(1991)-  38 46 38.00526(N)    076 43 33.70398(W) AD(       ) 1
 HV9899
 HV9899.Superseded values are not recommended for survey control.
 HV9899
 HV9899.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9899.See file dsdata.pdf to determine how the superseded data were derived.
 HV9899
 HV9899_MARKER: DD = SURVEY DISK
 HV9899_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9899_STAMPING: T.S. 20384 PG
 HV9899_MARK LOGO: WSSC
 HV9899_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9899_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9899+STABILITY: SURFACE MOTION
 HV9899_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9899+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9899
 HV9899  HISTORY     - Date     Condition        Report By
 HV9899  HISTORY     - 1993     MONUMENTED       MSI
 HV9899
 HV9899                          STATION DESCRIPTION
 HV9899
 HV9899'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9899'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9899'APPROXIMATELY 3.2 MI (5.1 KM) EAST OF THE TOWN OF MARLTON.  TO REACH
 HV9899'THE STATION FROM THE INTERSECTION OF CROOM ROAD (S.R. 382) AND MT.
 HV9899'CALVERT ROAD, PROCEED NORTHEAST ON MT. CALVERT ROAD FOR 1.4 MI
 HV9899'(2.3 KM) TO THE INTERSECTION WITH DUVALL ROAD.  CONTINUE ALONG MT.
 HV9899'CALVERT ROAD FOR 0.55 MI (0.89 KM) TO THE STATION ON THE LEFT.
 HV9899'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9899'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9899'T.S. 20384 PG.  THE DISK IS LOCATED 14.0 FT (4.3 M) NORTH OF THE
 HV9899'CENTERLINE OF MT. CALVERT ROAD, 2.3 FT (0.7 M) SOUTH OF A WOODEN
 HV9899'FENCE, 91.0 FT (27.7 M) EAST OF A HORSE CROSSING SIGN, AND 111.5 FT
 HV9899'(34.0 M) WEST OF POWER POLE NO. 878343-0385.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9900 ***********************************************************************
 HV9900  DESIGNATION -  20385
 HV9900  PID         -  HV9900
 HV9900  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9900  COUNTRY     -  US
 HV9900  USGS QUAD   -  BRISTOL (2016)
 HV9900
 HV9900                         *CURRENT SURVEY CONTROL
 HV9900  ______________________________________________________________________
 HV9900* NAD 83(2011) POSITION- 38 48 43.21554(N) 076 43 16.41579(W)   ADJUSTED
 HV9900* NAD 83(2011) ELLIP HT-     3.638 (meters)        (06/27/12)   ADJUSTED
 HV9900* NAD 83(2011) EPOCH   -  2010.00
 HV9900* NAVD 88 ORTHO HEIGHT -    36.6   (meters)      120.    (feet) GPS OBS
 HV9900  ______________________________________________________________________
 HV9900  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9900  GEOID HEIGHT    -        -33.370 (meters)                     GEOID93
 HV9900  GEOID HEIGHT    -        -33.024 (meters)                     GEOID18
 HV9900  NAD 83(2011) X  -  1,143,033.871 (meters)                     COMP
 HV9900  NAD 83(2011) Y  - -4,843,387.650 (meters)                     COMP
 HV9900  NAD 83(2011) Z  -  3,976,078.675 (meters)                     COMP
 HV9900  LAPLACE CORR    -         -6.03  (seconds)                    DEFLEC18
 HV9900
 HV9900  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9900  Standards:
 HV9900         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9900            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9900  -------------------------------------------------------------------
 HV9900  NETWORK    1.37   3.19           0.60   0.51   1.63      0.09745554
 HV9900  -------------------------------------------------------------------
 HV9900  Click here for local accuracies and other accuracy information.
 HV9900
 HV9900.The horizontal coordinates were established by GPS observations
 HV9900.and adjusted by the National Geodetic Survey in June 2012.
 HV9900
 HV9900.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9900.been affixed to the stable North American tectonic plate. See 
 HV9900.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9900
 HV9900.The horizontal coordinates are valid at the epoch date displayed above
 HV9900.which is a decimal equivalence of Year/Month/Day.
 HV9900
 HV9900.The orthometric height was determined by GPS observations and a
 HV9900.high-resolution geoid model.
 HV9900
 HV9900.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9900.GEOID18 height accuracy estimate available here.
 HV9900
 HV9900.Click photographs - Photos may exist for this station.
 HV9900
 HV9900.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9900
 HV9900.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9900
 HV9900.The ellipsoidal height was determined by GPS observations
 HV9900.and is referenced to NAD 83.
 HV9900
 HV9900. The following values were computed from the NAD 83(2011) position.
 HV9900
 HV9900;                    North         East     Units Scale Factor Converg.
 HV9900;SPC MD       -   127,174.117   424,211.673   MT  0.99995046   +0 10 29.9
 HV9900;SPC MD       -   417,237.08  1,391,767.80   sFT  0.99995046   +0 10 29.9
 HV9900;UTM  18      - 4,297,321.981   350,557.498   MT  0.99987501   -1 04 44.4
 HV9900
 HV9900!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9900!SPC MD       -   0.99999943  x   0.99995046  =   0.99994989
 HV9900!UTM  18      -   0.99999943  x   0.99987501  =   0.99987444
 HV9900
 HV9900_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5055797321(NAD 83)
 HV9900
 HV9900                          SUPERSEDED SURVEY CONTROL
 HV9900
 HV9900  NAD 83(2007)-  38 48 43.21578(N)    076 43 16.41691(W) AD(2002.00) 0
 HV9900  ELLIP H (02/10/07)    3.623  (m)                       GP(2002.00)    
 HV9900  ELLIP H (08/30/02)    3.618  (m)                       GP(       ) 4 2
 HV9900  NAD 83(1993)-  38 48 43.21577(N)    076 43 16.41717(W) AD(       ) 1
 HV9900  ELLIP H (11/14/94)    3.616  (m)                       GP(       ) 4 2
 HV9900  ELLIP H (09/09/94)    3.605  (m)                       GP(       ) 4 1
 HV9900  NAD 83(1991)-  38 48 43.21564(N)    076 43 16.41744(W) AD(       ) 1
 HV9900
 HV9900.Superseded values are not recommended for survey control.
 HV9900
 HV9900.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9900.See file dsdata.pdf to determine how the superseded data were derived.
 HV9900
 HV9900_MARKER: DD = SURVEY DISK
 HV9900_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9900_STAMPING: T.S. 20385 PG
 HV9900_MARK LOGO: WSSC
 HV9900_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9900_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9900+STABILITY: SURFACE MOTION
 HV9900_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9900+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9900
 HV9900  HISTORY     - Date     Condition        Report By
 HV9900  HISTORY     - 1993     MONUMENTED       MSI
 HV9900
 HV9900                          STATION DESCRIPTION
 HV9900
 HV9900'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9900'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9900'APPROXIMATELY 0.9 MI (1.4 KM) WEST OF THE TOWN OF WAYSONS CORNER.  TO
 HV9900'REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (U.S. 301)
 HV9900'AND OLD CRAIN HIGHWAY, PROCEED SOUTH ALONG OLD CRAIN HIGHWAY FOR 1.3
 HV9900'MI (2.1 KM) TO THE INTERESCTION WITH MARLBORO PIKE.  PROCEED SOUTH ON
 HV9900'MARLBORO PIKE FOR 0.8 MI (1.3 KM) TO THE INTERSECTION WITH GREEN
 HV9900'LANDING ROAD.  TURN RIGHT AND TRAVEL SOUTH ON GREEN LANDING ROAD FOR
 HV9900'0.2 MI (0.3 KM) TO THE STATION ON THE LEFT.
 HV9900'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9900'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9900'T.S. 20385 PG.  THE DISK IS LOCATED 72.5 FT (22.1 M) NORTH OF THE
 HV9900'RAMP (EDGE OF PAVEMENT), 108.0 FT (32.9 M) SOUTH-SOUTHWEST OF
 HV9900'PENNSYLVANIA AVENUE (S.R. 4) (EDGE OF PAVEMENT), AND 123.7 FT
 HV9900'(37.7 M) EAST-SOUTHEAST OF THE END OF A GUARD RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9901 ***********************************************************************
 HV9901  DESIGNATION -  20386
 HV9901  PID         -  HV9901
 HV9901  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9901  COUNTRY     -  US
 HV9901  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9901
 HV9901                         *CURRENT SURVEY CONTROL
 HV9901  ______________________________________________________________________
 HV9901* NAD 83(2011) POSITION- 38 47 26.96678(N) 076 45 01.21827(W)   ADJUSTED
 HV9901* NAD 83(2011) ELLIP HT-    -2.234 (meters)        (06/27/12)   ADJUSTED
 HV9901* NAD 83(2011) EPOCH   -  2010.00
 HV9901* NAVD 88 ORTHO HEIGHT -    30.7   (meters)      101.    (feet) GPS OBS
 HV9901  ______________________________________________________________________
 HV9901  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9901  GEOID HEIGHT    -        -33.330 (meters)                     GEOID93
 HV9901  GEOID HEIGHT    -        -32.977 (meters)                     GEOID18
 HV9901  NAD 83(2011) X  -  1,140,909.449 (meters)                     COMP
 HV9901  NAD 83(2011) Y  - -4,845,397.471 (meters)                     COMP
 HV9901  NAD 83(2011) Z  -  3,974,242.613 (meters)                     COMP
 HV9901  LAPLACE CORR    -         -6.20  (seconds)                    DEFLEC18
 HV9901
 HV9901  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9901  Standards:
 HV9901         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9901            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9901  -------------------------------------------------------------------
 HV9901  NETWORK    1.28   2.86           0.57   0.47   1.46      0.00438278
 HV9901  -------------------------------------------------------------------
 HV9901  Click here for local accuracies and other accuracy information.
 HV9901
 HV9901.The horizontal coordinates were established by GPS observations
 HV9901.and adjusted by the National Geodetic Survey in June 2012.
 HV9901
 HV9901.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9901.been affixed to the stable North American tectonic plate. See 
 HV9901.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9901
 HV9901.The horizontal coordinates are valid at the epoch date displayed above
 HV9901.which is a decimal equivalence of Year/Month/Day.
 HV9901
 HV9901.The orthometric height was determined by GPS observations and a
 HV9901.high-resolution geoid model.
 HV9901
 HV9901.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9901.GEOID18 height accuracy estimate available here.
 HV9901
 HV9901.Click photographs - Photos may exist for this station.
 HV9901
 HV9901.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9901
 HV9901.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9901
 HV9901.The ellipsoidal height was determined by GPS observations
 HV9901.and is referenced to NAD 83.
 HV9901
 HV9901. The following values were computed from the NAD 83(2011) position.
 HV9901
 HV9901;                    North         East     Units Scale Factor Converg.
 HV9901;SPC MD       -   124,815.672   421,689.729   MT  0.99995094   +0 09 24.1
 HV9901;SPC MD       -   409,499.42  1,383,493.72   sFT  0.99995094   +0 09 24.1
 HV9901;UTM  18      - 4,295,019.444   347,984.738   MT  0.99988457   -1 05 48.3
 HV9901
 HV9901!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9901!SPC MD       -   1.00000035  x   0.99995094  =   0.99995129
 HV9901!UTM  18      -   1.00000035  x   0.99988457  =   0.99988492
 HV9901
 HV9901_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4798495019(NAD 83)
 HV9901
 HV9901                          SUPERSEDED SURVEY CONTROL
 HV9901
 HV9901  NAD 83(2007)-  38 47 26.96702(N)    076 45 01.21943(W) AD(2002.00) 0
 HV9901  ELLIP H (02/10/07)   -2.255  (m)                       GP(2002.00)    
 HV9901  ELLIP H (08/30/02)   -2.262  (m)                       GP(       ) 4 2
 HV9901  NAD 83(1993)-  38 47 26.96699(N)    076 45 01.21965(W) AD(       ) 1
 HV9901  ELLIP H (11/14/94)   -2.255  (m)                       GP(       ) 4 2
 HV9901  ELLIP H (09/09/94)   -2.270  (m)                       GP(       ) 4 1
 HV9901  NAD 83(1991)-  38 47 26.96686(N)    076 45 01.21997(W) AD(       ) 1
 HV9901
 HV9901.Superseded values are not recommended for survey control.
 HV9901
 HV9901.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9901.See file dsdata.pdf to determine how the superseded data were derived.
 HV9901
 HV9901_MARKER: DD = SURVEY DISK
 HV9901_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9901_STAMPING: T.S. 20386 PG
 HV9901_MARK LOGO: WSSC
 HV9901_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9901_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9901+STABILITY: SURFACE MOTION
 HV9901_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9901+SATELLITE: SATELLITE OBSERVATIONS - August 23, 2016
 HV9901
 HV9901  HISTORY     - Date     Condition        Report By
 HV9901  HISTORY     - 1993     MONUMENTED       MSI
 HV9901  HISTORY     - 20160823 GOOD             MDSHA
 HV9901
 HV9901                          STATION DESCRIPTION
 HV9901
 HV9901'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9901'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9901'APPROXIMATELY 1.8 MI (2.9 KM) SOUTH OF THE TOWN OF UPPER MARLBORO. TO
 HV9901'REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (U.S. 301)
 HV9901'AND CHEW ROAD, PROCEED SOUTH ALONG CHEW ROAD FOR 0.1 MI (0.2 KM) TO
 HV9901'THE STATION ON THE RIGHT.
 HV9901'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9901'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9901'T.S. 20386 PG.  THE DISK IS LOCATED 14.5 FT (4.4 M) SOUTHWEST OF
 HV9901'THE CENTER LINE OF CHEW ROAD, 17.5 FT (5.3 M) SOUTH-SOUTHEAST OF THE
 HV9901'SOUTH END OF A CONCRETE CULVERT, 8.1 FT (2.5 M) SOUTH OF A MAILBOX,
 HV9901'AND 89.0 FT (27.1 M) SOUTH-SOUTHEAST OF C AND P POWER POLE NO. MD
 HV9901'P25.
 HV9901
 HV9901                          STATION RECOVERY (2016)
 HV9901
 HV9901'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2016 (PRK)
 HV9901'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9902 ***********************************************************************
 HV9902  DESIGNATION -  20387
 HV9902  PID         -  HV9902
 HV9902  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9902  COUNTRY     -  US
 HV9902  USGS QUAD   -  BRISTOL (2016)
 HV9902
 HV9902                         *CURRENT SURVEY CONTROL
 HV9902  ______________________________________________________________________
 HV9902* NAD 83(2011) POSITION- 38 49 29.14497(N) 076 44 57.67308(W)   ADJUSTED
 HV9902* NAD 83(2011) ELLIP HT-     7.174 (meters)        (06/27/12)   ADJUSTED
 HV9902* NAD 83(2011) EPOCH   -  2010.00
 HV9902* NAVD 88 ORTHO HEIGHT -    40.0   (meters)      131.    (feet) GPS OBS
 HV9902  ______________________________________________________________________
 HV9902  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9902  GEOID HEIGHT    -        -33.260 (meters)                     GEOID93
 HV9902  GEOID HEIGHT    -        -32.909 (meters)                     GEOID18
 HV9902  NAD 83(2011) X  -  1,140,453.203 (meters)                     COMP
 HV9902  NAD 83(2011) Y  - -4,843,086.690 (meters)                     COMP
 HV9902  NAD 83(2011) Z  -  3,977,184.393 (meters)                     COMP
 HV9902  LAPLACE CORR    -         -5.88  (seconds)                    DEFLEC18
 HV9902
 HV9902  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9902  Standards:
 HV9902         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9902            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9902  -------------------------------------------------------------------
 HV9902  NETWORK    1.16   2.55           0.47   0.48   1.30      0.01651919
 HV9902  -------------------------------------------------------------------
 HV9902  Click here for local accuracies and other accuracy information.
 HV9902
 HV9902.The horizontal coordinates were established by GPS observations
 HV9902.and adjusted by the National Geodetic Survey in June 2012.
 HV9902
 HV9902.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9902.been affixed to the stable North American tectonic plate. See 
 HV9902.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9902
 HV9902.The horizontal coordinates are valid at the epoch date displayed above
 HV9902.which is a decimal equivalence of Year/Month/Day.
 HV9902
 HV9902.The orthometric height was determined by GPS observations and a
 HV9902.high-resolution geoid model.
 HV9902
 HV9902.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9902.GEOID18 height accuracy estimate available here.
 HV9902
 HV9902.Click photographs - Photos may exist for this station.
 HV9902
 HV9902.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9902
 HV9902.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9902
 HV9902.The ellipsoidal height was determined by GPS observations
 HV9902.and is referenced to NAD 83.
 HV9902
 HV9902. The following values were computed from the NAD 83(2011) position.
 HV9902
 HV9902;                    North         East     Units Scale Factor Converg.
 HV9902;SPC MD       -   128,583.268   421,764.939   MT  0.99995024   +0 09 26.3
 HV9902;SPC MD       -   421,860.27  1,383,740.47   sFT  0.99995024   +0 09 26.3
 HV9902;UTM  18      - 4,298,784.243   348,142.362   MT  0.99988397   -1 05 49.0
 HV9902
 HV9902!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9902!SPC MD       -   0.99999887  x   0.99995024  =   0.99994911
 HV9902!UTM  18      -   0.99999887  x   0.99988397  =   0.99988284
 HV9902
 HV9902_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4814298784(NAD 83)
 HV9902
 HV9902                          SUPERSEDED SURVEY CONTROL
 HV9902
 HV9902  NAD 83(2007)-  38 49 29.14525(N)    076 44 57.67414(W) AD(2002.00) 0
 HV9902  ELLIP H (02/10/07)    7.165  (m)                       GP(2002.00)    
 HV9902  ELLIP H (08/30/02)    7.161  (m)                       GP(       ) 4 2
 HV9902  NAD 83(1993)-  38 49 29.14531(N)    076 44 57.67442(W) AD(       ) 1
 HV9902  ELLIP H (11/14/94)    7.150  (m)                       GP(       ) 4 2
 HV9902  ELLIP H (09/09/94)    7.141  (m)                       GP(       ) 4 1
 HV9902  NAD 83(1991)-  38 49 29.14526(N)    076 44 57.67464(W) AD(       ) 1
 HV9902
 HV9902.Superseded values are not recommended for survey control.
 HV9902
 HV9902.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9902.See file dsdata.pdf to determine how the superseded data were derived.
 HV9902
 HV9902_MARKER: DD = SURVEY DISK
 HV9902_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9902_STAMPING: T.S. 20387 PG
 HV9902_MARK LOGO: WSSC
 HV9902_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9902_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9902+STABILITY: SURFACE MOTION
 HV9902_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9902+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9902
 HV9902  HISTORY     - Date     Condition        Report By
 HV9902  HISTORY     - 1993     MONUMENTED       MSI
 HV9902  HISTORY     - 20041224 GOOD             GEOCAC
 HV9902
 HV9902                          STATION DESCRIPTION
 HV9902
 HV9902'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9902'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9902'APPROXIMATELY 0.5 MI (0.8 KM) NORTH OF THE TOWN OF UPPER MARLBORO. TO
 HV9902'REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (U.S. 301)
 HV9902'AND MARLBORO PIKE (S.R. 725), PROCEED WEST ON MARLBORO PIKE FOR 0.7 MI
 HV9902'(1.1 KM) TO THE INTERSECTION WITH LARGO ROAD.  TURN RIGHT AND TRAVEL
 HV9902'NORTH ON LARGO ROAD FOR 0.3 MI (0.5 KM) TO THE STATION ON THE RIGHT.
 HV9902'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9902'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9902'T.S. 20387 PG.  THE DISK IS LOCATED 37.0 FT (11.3 M)
 HV9902'SOUTH-SOUTHEAST OF A PAVED PLAY AREA, 56.2 FT (17.1 M) SOUTHWEST OF
 HV9902'THE SOUTHWEST CORNER OF A CONCRETE PAD, AND 71.0 FT (21.6 M)
 HV9902'EAST-NORTHEAST OF A C AND P TELEPHONE POLE NO. MD P16349.
 HV9902
 HV9902                          STATION RECOVERY (2004)
 HV9902
 HV9902'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV9902'IN ADDITION TO 1993 DESCRIPTION, ADD -- STATION IS IN A GRASSY AREA
 HV9902'SOUTH OF A PARKING LOT, WHICH IS SOUTH OF ST. MARY OF THE ASSUMPTION
 HV9902'SCHOOL. STATION IS APPROXIMATELY 35 FEET SOUTH-SOUTHEAST OF A METAL
 HV9902'LIGHT POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9903 ***********************************************************************
 HV9903  DESIGNATION -  20388
 HV9903  PID         -  HV9903
 HV9903  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9903  COUNTRY     -  US
 HV9903  USGS QUAD   -  BRISTOL (2016)
 HV9903
 HV9903                         *CURRENT SURVEY CONTROL
 HV9903  ______________________________________________________________________
 HV9903* NAD 83(2011) POSITION- 38 52 06.16885(N) 076 44 45.45737(W)   ADJUSTED
 HV9903* NAD 83(2011) ELLIP HT-   -14.143 (meters)        (06/27/12)   ADJUSTED
 HV9903* NAD 83(2011) EPOCH   -  2010.00
 HV9903* NAVD 88 ORTHO HEIGHT -    18.7   (meters)       61.    (feet) GPS OBS
 HV9903  ______________________________________________________________________
 HV9903  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9903  GEOID HEIGHT    -        -33.190 (meters)                     GEOID93
 HV9903  GEOID HEIGHT    -        -32.831 (meters)                     GEOID18
 HV9903  NAD 83(2011) X  -  1,140,039.894 (meters)                     COMP
 HV9903  NAD 83(2011) Y  - -4,840,046.727 (meters)                     COMP
 HV9903  NAD 83(2011) Z  -  3,980,942.198 (meters)                     COMP
 HV9903  LAPLACE CORR    -         -5.87  (seconds)                    DEFLEC18
 HV9903
 HV9903  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9903  Standards:
 HV9903         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9903            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9903  -------------------------------------------------------------------
 HV9903  NETWORK    1.11   2.45           0.44   0.47   1.25      0.07569069
 HV9903  -------------------------------------------------------------------
 HV9903  Click here for local accuracies and other accuracy information.
 HV9903
 HV9903.The horizontal coordinates were established by GPS observations
 HV9903.and adjusted by the National Geodetic Survey in June 2012.
 HV9903
 HV9903.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9903.been affixed to the stable North American tectonic plate. See 
 HV9903.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9903
 HV9903.The horizontal coordinates are valid at the epoch date displayed above
 HV9903.which is a decimal equivalence of Year/Month/Day.
 HV9903
 HV9903.The orthometric height was determined by GPS observations and a
 HV9903.high-resolution geoid model.
 HV9903
 HV9903.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9903.GEOID18 height accuracy estimate available here.
 HV9903
 HV9903.Click photographs - Photos may exist for this station.
 HV9903
 HV9903.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9903
 HV9903.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9903
 HV9903.The ellipsoidal height was determined by GPS observations
 HV9903.and is referenced to NAD 83.
 HV9903
 HV9903. The following values were computed from the NAD 83(2011) position.
 HV9903
 HV9903;                    North         East     Units Scale Factor Converg.
 HV9903;SPC MD       -   133,425.939   422,046.118   MT  0.99994986   +0 09 34.0
 HV9903;SPC MD       -   437,748.27  1,384,662.97   sFT  0.99994986   +0 09 34.0
 HV9903;UTM  18      - 4,303,619.272   348,529.495   MT  0.99988252   -1 05 45.1
 HV9903
 HV9903!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9903!SPC MD       -   1.00000222  x   0.99994986  =   0.99995208
 HV9903!UTM  18      -   1.00000222  x   0.99988252  =   0.99988474
 HV9903
 HV9903_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4852903619(NAD 83)
 HV9903
 HV9903                          SUPERSEDED SURVEY CONTROL
 HV9903
 HV9903  NAD 83(2007)-  38 52 06.16917(N)    076 44 45.45824(W) AD(2002.00) 0
 HV9903  ELLIP H (02/10/07)  -14.137  (m)                       GP(2002.00)    
 HV9903  ELLIP H (08/30/02)  -14.139  (m)                       GP(       ) 4 2
 HV9903  ELLIP H (09/09/94)  -14.173  (m)                       GP(       ) 4 1
 HV9903  NAD 83(1991)-  38 52 06.16924(N)    076 44 45.45857(W) AD(       ) 1
 HV9903
 HV9903.Superseded values are not recommended for survey control.
 HV9903
 HV9903.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9903.See file dsdata.pdf to determine how the superseded data were derived.
 HV9903
 HV9903_MARKER: DD = SURVEY DISK
 HV9903_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9903_STAMPING: T.S. 20388 PG
 HV9903_MARK LOGO: WSSC
 HV9903_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9903_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9903+STABILITY: SURFACE MOTION
 HV9903_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9903+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9903
 HV9903  HISTORY     - Date     Condition        Report By
 HV9903  HISTORY     - 1993     MONUMENTED       MSI
 HV9903
 HV9903                          STATION DESCRIPTION
 HV9903
 HV9903'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9903'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9903'APPROXIMATELY 6.0 MI (9.7 KM) SOUTH OF THE TOWN OF BOWIE.  TO REACH
 HV9903'THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (U.S. 301) AND
 HV9903'LEELAND ROAD, PROCEED WEST ALONG LEELAND ROAD FOR 1.2 MI (1.9 KM) TO
 HV9903'THE STATION ON THE LEFT.
 HV9903'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9903'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9903'T.S. 20388 PG.  THE DISK IS LOCATED 4.1 FT (1.2 M) WEST-SOUTHWEST
 HV9903'OF A GUARD RAIL, 7.4 FT (2.3 M) SOUTH-SOUTHEAST OF THE SOUTHWEST
 HV9903'CORNER OF A BRIDGE, 65.8 FT (20.1 M) NORTHEAST OF A MANHOLE, AND 25.9
 HV9903'FT (7.9 M) WEST OF THE CENTER LINE OF LEELAND ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9904 ***********************************************************************
 HV9904  DESIGNATION -  20389
 HV9904  PID         -  HV9904
 HV9904  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9904  COUNTRY     -  US
 HV9904  USGS QUAD   -  BOWIE (2016)
 HV9904
 HV9904                         *CURRENT SURVEY CONTROL
 HV9904  ______________________________________________________________________
 HV9904* NAD 83(2011) POSITION- 38 56 04.66692(N) 076 41 52.04765(W)   ADJUSTED
 HV9904* NAD 83(2011) ELLIP HT-    -2.932 (meters)        (06/27/12)   ADJUSTED
 HV9904* NAD 83(2011) EPOCH   -  2010.00
 HV9904* NAVD 88 ORTHO HEIGHT -    29.9   (meters)       98.    (feet) GPS OBS
 HV9904  ______________________________________________________________________
 HV9904  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9904  GEOID HEIGHT    -        -33.220 (meters)                     GEOID93
 HV9904  GEOID HEIGHT    -        -32.870 (meters)                     GEOID18
 HV9904  NAD 83(2011) X  -  1,143,047.922 (meters)                     COMP
 HV9904  NAD 83(2011) Y  - -4,834,600.420 (meters)                     COMP
 HV9904  NAD 83(2011) Z  -  3,986,672.770 (meters)                     COMP
 HV9904  LAPLACE CORR    -         -6.01  (seconds)                    DEFLEC18
 HV9904
 HV9904  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9904  Standards:
 HV9904         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9904            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9904  -------------------------------------------------------------------
 HV9904  NETWORK    1.20   2.74           0.48   0.50   1.40     -0.04554480
 HV9904  -------------------------------------------------------------------
 HV9904  Click here for local accuracies and other accuracy information.
 HV9904
 HV9904.The horizontal coordinates were established by GPS observations
 HV9904.and adjusted by the National Geodetic Survey in June 2012.
 HV9904
 HV9904.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9904.been affixed to the stable North American tectonic plate. See 
 HV9904.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9904
 HV9904.The horizontal coordinates are valid at the epoch date displayed above
 HV9904.which is a decimal equivalence of Year/Month/Day.
 HV9904
 HV9904.The orthometric height was determined by GPS observations and a
 HV9904.high-resolution geoid model.
 HV9904
 HV9904.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9904.GEOID18 height accuracy estimate available here.
 HV9904
 HV9904.Click photographs - Photos may exist for this station.
 HV9904
 HV9904.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9904
 HV9904.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9904
 HV9904.The ellipsoidal height was determined by GPS observations
 HV9904.and is referenced to NAD 83.
 HV9904
 HV9904. The following values were computed from the NAD 83(2011) position.
 HV9904
 HV9904;                    North         East     Units Scale Factor Converg.
 HV9904;SPC MD       -   140,792.859   426,202.001   MT  0.99995037   +0 11 22.8
 HV9904;SPC MD       -   461,917.90  1,398,297.73   sFT  0.99995037   +0 11 22.8
 HV9904;UTM  18      - 4,310,892.772   352,845.542   MT  0.99986665   -1 04 01.7
 HV9904
 HV9904!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9904!SPC MD       -   1.00000046  x   0.99995037  =   0.99995083
 HV9904!UTM  18      -   1.00000046  x   0.99986665  =   0.99986711
 HV9904
 HV9904_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5284510892(NAD 83)
 HV9904
 HV9904                          SUPERSEDED SURVEY CONTROL
 HV9904
 HV9904  NAD 83(2007)-  38 56 04.66722(N)    076 41 52.04849(W) AD(2002.00) 0
 HV9904  ELLIP H (02/10/07)   -2.917  (m)                       GP(2002.00)    
 HV9904  ELLIP H (08/30/02)   -2.913  (m)                       GP(       ) 4 2
 HV9904  ELLIP H (09/09/94)   -2.965  (m)                       GP(       ) 4 1
 HV9904  NAD 83(1991)-  38 56 04.66730(N)    076 41 52.04842(W) AD(       ) 1
 HV9904
 HV9904.Superseded values are not recommended for survey control.
 HV9904
 HV9904.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9904.See file dsdata.pdf to determine how the superseded data were derived.
 HV9904
 HV9904_MARKER: DD = SURVEY DISK
 HV9904_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9904_STAMPING: T.S. 20389 PG
 HV9904_MARK LOGO: WSSC
 HV9904_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9904_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9904+STABILITY: SURFACE MOTION
 HV9904_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9904+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2005
 HV9904
 HV9904  HISTORY     - Date     Condition        Report By
 HV9904  HISTORY     - 1993     MONUMENTED       MSI
 HV9904  HISTORY     - 20030604 GOOD             URS
 HV9904  HISTORY     - 20050720 GOOD             USPSQD
 HV9904
 HV9904                          STATION DESCRIPTION
 HV9904
 HV9904'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9904'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9904'APPROXIMATELY 2.7 MI (4.3 KM) SOUTHEAST OF THE TOWN OF BOWIE.  TO
 HV9904'REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (U.S. 301
 HV9904'AND S.R. 3) AND THE JOHN HANSON HIGHWAY (U.S. 50), PROCEED SOUTH
 HV9904'ALONG CRAIN HIGHWAY FOR 1.3 MI (2.1 KM) TO THE INTERSECTION WITH MILL
 HV9904'BRANCH ROAD.  TURN LEFT AND TRAVEL SOUTHEAST ON MILL BRANCH ROAD FOR
 HV9904'0.6 MI (1.0 KM) TO THE INTERSECTION WITH MILL BRANCH PLACE.  TURN
 HV9904'LEFT AND TRAVEL NORTHEAST ON MILL BRANCH PLACE FOR 0.7 MI (1.1 KM) TO
 HV9904'HOUSE NO. 17709, AND THE STATION ON THE LEFT.
 HV9904'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9904'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9904'T.S. 20389 PG.  THE DISK IS LOCATED 15.4 FT (4.7 M) NORTHEAST OF
 HV9904'CENTER LINE OF BRANCH MILL PLACE, 2.0 FT (0.6 M) SOUTHWEST OF A FENCE
 HV9904'LINE, AND 45.6 FT (13.9 M) EAST OF A CONCRETE POST.
 HV9904
 HV9904                          STATION RECOVERY (2003)
 HV9904
 HV9904'RECOVERY NOTE BY URS COMPANY 2003 (JP)
 HV9904'RECOVERED IN GOOD CONDITION.
 HV9904
 HV9904                          STATION RECOVERY (2005)
 HV9904
 HV9904'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV9904'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9905 ***********************************************************************
 HV9905  DESIGNATION -  20390
 HV9905  PID         -  HV9905
 HV9905  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9905  COUNTRY     -  US
 HV9905  USGS QUAD   -  BOWIE (2016)
 HV9905
 HV9905                         *CURRENT SURVEY CONTROL
 HV9905  ______________________________________________________________________
 HV9905* NAD 83(2011) POSITION- 38 56 46.31047(N) 076 43 18.57383(W)   ADJUSTED
 HV9905* NAD 83(2011) ELLIP HT-     1.779 (meters)        (06/27/12)   ADJUSTED
 HV9905* NAD 83(2011) EPOCH   -  2010.00
 HV9905* NAVD 88 ORTHO HEIGHT -    34.5   (meters)      113.    (feet) GPS OBS
 HV9905  ______________________________________________________________________
 HV9905  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9905  GEOID HEIGHT    -        -33.140 (meters)                     GEOID93
 HV9905  GEOID HEIGHT    -        -32.776 (meters)                     GEOID18
 HV9905  NAD 83(2011) X  -  1,140,835.215 (meters)                     COMP
 HV9905  NAD 83(2011) Y  - -4,834,297.517 (meters)                     COMP
 HV9905  NAD 83(2011) Z  -  3,987,674.562 (meters)                     COMP
 HV9905  LAPLACE CORR    -         -6.04  (seconds)                    DEFLEC18
 HV9905
 HV9905  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9905  Standards:
 HV9905         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9905            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9905  -------------------------------------------------------------------
 HV9905  NETWORK    1.19   2.63           0.49   0.48   1.34     -0.05629659
 HV9905  -------------------------------------------------------------------
 HV9905  Click here for local accuracies and other accuracy information.
 HV9905
 HV9905.The horizontal coordinates were established by GPS observations
 HV9905.and adjusted by the National Geodetic Survey in June 2012.
 HV9905
 HV9905.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9905.been affixed to the stable North American tectonic plate. See 
 HV9905.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9905
 HV9905.The horizontal coordinates are valid at the epoch date displayed above
 HV9905.which is a decimal equivalence of Year/Month/Day.
 HV9905
 HV9905.The orthometric height was determined by GPS observations and a
 HV9905.high-resolution geoid model.
 HV9905
 HV9905.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9905.GEOID18 height accuracy estimate available here.
 HV9905
 HV9905.Click photographs - Photos may exist for this station.
 HV9905
 HV9905.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9905
 HV9905.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9905
 HV9905.The ellipsoidal height was determined by GPS observations
 HV9905.and is referenced to NAD 83.
 HV9905
 HV9905. The following values were computed from the NAD 83(2011) position.
 HV9905
 HV9905;                    North         East     Units Scale Factor Converg.
 HV9905;SPC MD       -   142,070.340   424,114.218   MT  0.99995060   +0 10 28.5
 HV9905;SPC MD       -   466,109.11  1,391,448.06   sFT  0.99995060   +0 10 28.5
 HV9905;UTM  18      - 4,312,215.639   350,786.450   MT  0.99987416   -1 04 57.1
 HV9905
 HV9905!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9905!SPC MD       -   0.99999972  x   0.99995060  =   0.99995032
 HV9905!UTM  18      -   0.99999972  x   0.99987416  =   0.99987388
 HV9905
 HV9905_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5078612215(NAD 83)
 HV9905
 HV9905                          SUPERSEDED SURVEY CONTROL
 HV9905
 HV9905  NAD 83(2007)-  38 56 46.31077(N)    076 43 18.57466(W) AD(2002.00) 0
 HV9905  ELLIP H (02/10/07)    1.795  (m)                       GP(2002.00)    
 HV9905  ELLIP H (08/30/02)    1.799  (m)                       GP(       ) 4 2
 HV9905  ELLIP H (09/09/94)    1.746  (m)                       GP(       ) 4 1
 HV9905  NAD 83(1991)-  38 56 46.31085(N)    076 43 18.57461(W) AD(       ) 1
 HV9905
 HV9905.Superseded values are not recommended for survey control.
 HV9905
 HV9905.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9905.See file dsdata.pdf to determine how the superseded data were derived.
 HV9905
 HV9905_MARKER: DD = SURVEY DISK
 HV9905_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9905_STAMPING: T.S. 20390 PG
 HV9905_MARK LOGO: WSSC
 HV9905_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9905_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9905+STABILITY: SURFACE MOTION
 HV9905_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9905+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9905
 HV9905  HISTORY     - Date     Condition        Report By
 HV9905  HISTORY     - 1993     MONUMENTED       MSI
 HV9905  HISTORY     - 20030604 MARK NOT FOUND   URS
 HV9905
 HV9905                          STATION DESCRIPTION
 HV9905
 HV9905'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9905'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9905'APPROXIMATELY 1.2 MI (1.9 KM) SOUTHEAST OF THE TOWN OF BOWIE.  TO
 HV9905'REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (S.R. 301)
 HV9905'AND COLLINGTON ROAD (S.R. 197), PROCEED WEST ALONG COLLINGTON ROAD
 HV9905'FOR 0.25 MI (0.40 KM) TO THE INTERSECTION WITH MITCHELLVILLE ROAD.
 HV9905'TURN RIGHT AND TRAVEL NORTH ALONG MITCHELLVILLE ROAD FOR 0.1 MI
 HV9905'(0.2 KM) TO THE STATION ON THE LEFT IN MEDIAN.
 HV9905'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9905'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9905'T.S. 20390 PG.  THE DISK IS LOCATED 24.0 FT (7.3 M) NORTHWEST OF
 HV9905'NORTH BOUND LANE, 28.6 FT (8.7 M) SOUTHEAST OF SOUTH BOUND LANE, AND
 HV9905'63.5 FT (19.4 M) SOUTH OF METAL LAMP POST.
 HV9905
 HV9905                          STATION RECOVERY (2003)
 HV9905
 HV9905'RECOVERY NOTE BY URS COMPANY 2003 (JP)
 HV9905'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9906 ***********************************************************************
 HV9906  DESIGNATION -  20391
 HV9906  PID         -  HV9906
 HV9906  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9906  COUNTRY     -  US
 HV9906  USGS QUAD   -  LOWER MARLBORO (2016)
 HV9906
 HV9906                         *CURRENT SURVEY CONTROL
 HV9906  ______________________________________________________________________
 HV9906* NAD 83(2011) POSITION- 38 37 58.99126(N) 076 41 29.91954(W)   ADJUSTED
 HV9906* NAD 83(2011) ELLIP HT-   -29.159 (meters)        (06/27/12)   ADJUSTED
 HV9906* NAD 83(2011) EPOCH   -  2010.00
 HV9906* NAVD 88 ORTHO HEIGHT -     4.2   (meters)       14.    (feet) GPS OBS
 HV9906  ______________________________________________________________________
 HV9906  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9906  GEOID HEIGHT    -        -33.780 (meters)                     GEOID93
 HV9906  GEOID HEIGHT    -        -33.450 (meters)                     GEOID18
 HV9906  NAD 83(2011) X  -  1,148,389.048 (meters)                     COMP
 HV9906  NAD 83(2011) Y  - -4,854,864.994 (meters)                     COMP
 HV9906  NAD 83(2011) Z  -  3,960,559.515 (meters)                     COMP
 HV9906  LAPLACE CORR    -         -3.92  (seconds)                    DEFLEC18
 HV9906
 HV9906  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9906  Standards:
 HV9906         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9906            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9906  -------------------------------------------------------------------
 HV9906  NETWORK    1.48   3.19           0.64   0.57   1.63      0.04444410
 HV9906  -------------------------------------------------------------------
 HV9906  Click here for local accuracies and other accuracy information.
 HV9906
 HV9906.The horizontal coordinates were established by GPS observations
 HV9906.and adjusted by the National Geodetic Survey in June 2012.
 HV9906
 HV9906.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9906.been affixed to the stable North American tectonic plate. See 
 HV9906.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9906
 HV9906.The horizontal coordinates are valid at the epoch date displayed above
 HV9906.which is a decimal equivalence of Year/Month/Day.
 HV9906
 HV9906.The orthometric height was determined by GPS observations and a
 HV9906.high-resolution geoid model.
 HV9906
 HV9906.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9906.GEOID18 height accuracy estimate available here.
 HV9906
 HV9906.Click photographs - Photos may exist for this station.
 HV9906
 HV9906.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9906
 HV9906.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9906
 HV9906.The ellipsoidal height was determined by GPS observations
 HV9906.and is referenced to NAD 83.
 HV9906
 HV9906. The following values were computed from the NAD 83(2011) position.
 HV9906
 HV9906;                    North         East     Units Scale Factor Converg.
 HV9906;SPC MD       -   107,318.004   426,848.006   MT  0.99995877   +0 11 36.7
 HV9906;SPC MD       -   352,092.48  1,400,417.17   sFT  0.99995877   +0 11 36.7
 HV9906;UTM  18      - 4,277,414.658   352,759.198   MT  0.99986698   -1 03 22.8
 HV9906
 HV9906!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9906!SPC MD       -   1.00000458  x   0.99995877  =   0.99996334
 HV9906!UTM  18      -   1.00000458  x   0.99986698  =   0.99987155
 HV9906
 HV9906_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5275977414(NAD 83)
 HV9906
 HV9906                          SUPERSEDED SURVEY CONTROL
 HV9906
 HV9906  NAD 83(2007)-  38 37 58.99143(N)    076 41 29.92038(W) AD(2002.00) 0
 HV9906  ELLIP H (02/10/07)  -29.167  (m)                       GP(2002.00)    
 HV9906  ELLIP H (08/30/02)  -29.177  (m)                       GP(       ) 4 2
 HV9906  NAD 83(1993)-  38 37 58.99083(N)    076 41 29.92032(W) AD(       ) 1
 HV9906  ELLIP H (11/14/94)  -29.127  (m)                       GP(       ) 4 2
 HV9906  ELLIP H (09/09/94)  -29.149  (m)                       GP(       ) 4 1
 HV9906  NAD 83(1991)-  38 37 58.99058(N)    076 41 29.92128(W) AD(       ) 1
 HV9906
 HV9906.Superseded values are not recommended for survey control.
 HV9906
 HV9906.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9906.See file dsdata.pdf to determine how the superseded data were derived.
 HV9906
 HV9906_MARKER: DD = SURVEY DISK
 HV9906_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9906_STAMPING: T.S. 20391 PG
 HV9906_MARK LOGO: WSSC
 HV9906_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9906_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9906+STABILITY: SURFACE MOTION
 HV9906_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9906+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9906
 HV9906  HISTORY     - Date     Condition        Report By
 HV9906  HISTORY     - 1993     MONUMENTED       MSI
 HV9906
 HV9906                          STATION DESCRIPTION
 HV9906
 HV9906'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9906'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9906'APPROXIMATELY 4.6 MI (7.4 KM) NORTH OF THE TOWN OF EAGLE HARBOUR.  TO
 HV9906'REACH THE STATION FROM THE INTERSECTION OF BADEN-WESTWOOD ROAD AND
 HV9906'CROOM ROAD (S.R. 382), PROCEED SOUTH ALONG CROOM ROAD FOR 0.8 MI
 HV9906'(1.3 KM) TO THE INTERSECTION WITH MILLTOWN LANDING ROAD.  TURN LEFT
 HV9906'AND TRAVEL EAST ON MILLTOWN LANDING ROAD FOR 1.2 MI (1.9 KM) TO A
 HV9906'GATE. CONTINUE THROUGH GATE AND TRAVEL EAST FOR 1.7 MI (2.7 KM) TO
 HV9906'THE STATION ON THE LEFT.
 HV9906'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9906'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9906'T.S. 20391 PG.  THE DISK IS LOCATED 145.0 FT (44.2 M) NORTH OF THE
 HV9906'CENTER LINE OF A DIRT ROAD, 97.0 FT (29.6 M) NORTHWEST OF THE CENTER
 HV9906'OF A CONCRETE SLAB, AND 1.3 FT (0.4 M) WEST OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9907 ***********************************************************************
 HV9907  DESIGNATION -  20392
 HV9907  PID         -  HV9907
 HV9907  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9907  COUNTRY     -  US
 HV9907  USGS QUAD   -  BOWIE (2016)
 HV9907
 HV9907                         *CURRENT SURVEY CONTROL
 HV9907  ______________________________________________________________________
 HV9907* NAD 83(2011) POSITION- 38 57 26.31447(N) 076 44 41.26896(W)   ADJUSTED
 HV9907* NAD 83(2011) ELLIP HT-     9.925 (meters)        (06/27/12)   ADJUSTED
 HV9907* NAD 83(2011) EPOCH   -  2010.00
 HV9907* NAVD 88 ORTHO HEIGHT -    42.6   (meters)      140.    (feet) GPS OBS
 HV9907  ______________________________________________________________________
 HV9907  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9907  GEOID HEIGHT    -        -33.050 (meters)                     GEOID93
 HV9907  GEOID HEIGHT    -        -32.690 (meters)                     GEOID18
 HV9907  NAD 83(2011) X  -  1,138,720.601 (meters)                     COMP
 HV9907  NAD 83(2011) Y  - -4,834,005.802 (meters)                     COMP
 HV9907  NAD 83(2011) Z  -  3,988,639.039 (meters)                     COMP
 HV9907  LAPLACE CORR    -         -5.64  (seconds)                    DEFLEC18
 HV9907
 HV9907  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9907  Standards:
 HV9907         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9907            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9907  -------------------------------------------------------------------
 HV9907  NETWORK    1.10   2.49           0.46   0.44   1.27     -0.02676708
 HV9907  -------------------------------------------------------------------
 HV9907  Click here for local accuracies and other accuracy information.
 HV9907
 HV9907.The horizontal coordinates were established by GPS observations
 HV9907.and adjusted by the National Geodetic Survey in June 2012.
 HV9907
 HV9907.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9907.been affixed to the stable North American tectonic plate. See 
 HV9907.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9907
 HV9907.The horizontal coordinates are valid at the epoch date displayed above
 HV9907.which is a decimal equivalence of Year/Month/Day.
 HV9907
 HV9907.The orthometric height was determined by GPS observations and a
 HV9907.high-resolution geoid model.
 HV9907
 HV9907.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9907.GEOID18 height accuracy estimate available here.
 HV9907
 HV9907.Click photographs - Photos may exist for this station.
 HV9907
 HV9907.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9907
 HV9907.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9907
 HV9907.The ellipsoidal height was determined by GPS observations
 HV9907.and is referenced to NAD 83.
 HV9907
 HV9907. The following values were computed from the NAD 83(2011) position.
 HV9907
 HV9907;                    North         East     Units Scale Factor Converg.
 HV9907;SPC MD       -   143,298.076   422,119.486   MT  0.99995086   +0 09 36.6
 HV9907;SPC MD       -   470,137.10  1,384,903.68   sFT  0.99995086   +0 09 36.6
 HV9907;UTM  18      - 4,313,486.754   348,819.280   MT  0.99988144   -1 05 50.0
 HV9907
 HV9907!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9907!SPC MD       -   0.99999844  x   0.99995086  =   0.99994930
 HV9907!UTM  18      -   0.99999844  x   0.99988144  =   0.99987988
 HV9907
 HV9907_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4881913486(NAD 83)
 HV9907
 HV9907                          SUPERSEDED SURVEY CONTROL
 HV9907
 HV9907  NAD 83(2007)-  38 57 26.31475(N)    076 44 41.26977(W) AD(2002.00) 0
 HV9907  ELLIP H (02/10/07)    9.944  (m)                       GP(2002.00)    
 HV9907  ELLIP H (08/30/02)    9.951  (m)                       GP(       ) 4 2
 HV9907  ELLIP H (09/09/94)    9.891  (m)                       GP(       ) 4 1
 HV9907  NAD 83(1991)-  38 57 26.31480(N)    076 44 41.26961(W) AD(       ) 1
 HV9907
 HV9907.Superseded values are not recommended for survey control.
 HV9907
 HV9907.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9907.See file dsdata.pdf to determine how the superseded data were derived.
 HV9907
 HV9907_MARKER: DD = SURVEY DISK
 HV9907_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9907_STAMPING: T.S. 20392 PG
 HV9907_MARK LOGO: WSSC
 HV9907_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9907_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9907+STABILITY: SURFACE MOTION
 HV9907_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9907+SATELLITE: SATELLITE OBSERVATIONS - June 04, 2003
 HV9907
 HV9907  HISTORY     - Date     Condition        Report By
 HV9907  HISTORY     - 1993     MONUMENTED       MSI
 HV9907  HISTORY     - 20030604 GOOD             URS
 HV9907
 HV9907                          STATION DESCRIPTION
 HV9907
 HV9907'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9907'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9907'APPROXIMATELY 0.6 MI (1.0 KM) WEST OF THE CENTER OF THE TOWN OF
 HV9907'BOWIE. TO REACH THE STATION FROM THE INTERSECTION OF JOHN HANSON
 HV9907'HIGHWAY (U.S. 50) AND COLLINGTON ROAD (S.R. 197), PROCEED NORTH ON
 HV9907'COLLINGTON ROAD FOR 0.3 MI (0.5 KM) TO THE INTERSECTION WITH KENHILL
 HV9907'DRIVE. TURN RIGHT AND TRAVEL EAST FOR 0.03 MI (0.05 KM) TO THE
 HV9907'ENTRANCE OF BENJAMIN TASKER MIDDLE SCHOOL. TURN LEFT INTO THE PARKING
 HV9907'LOT AND STATION IS IN A GRASS ISLAND IN THE PARKING LOT BETWEEN THE
 HV9907'SCHOOL AND KENHILL DRIVE.
 HV9907'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9907'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9907'T.S. 20392 PG.  THE DISK IS LOCATED 97.2 FT (29.6 M) SOUTHEAST OF
 HV9907'EAST CORNER OF THE SOUTH WING OF THE SCHOOL, 49.0 FT (14.9 M) EAST OF
 HV9907'A LAMP POST, 15.5 FT (4.7 M) SOUTHWEST OF THE CURB ON NORTHEAST SIDE
 HV9907'OF ISLAND.
 HV9907
 HV9907                          STATION RECOVERY (2003)
 HV9907
 HV9907'RECOVERY NOTE BY URS COMPANY 2003 (JP)
 HV9907'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9908 ***********************************************************************
 HV9908  DESIGNATION -  20393
 HV9908  PID         -  HV9908
 HV9908  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9908  COUNTRY     -  US
 HV9908  USGS QUAD   -  BRANDYWINE (2016)
 HV9908
 HV9908                         *CURRENT SURVEY CONTROL
 HV9908  ______________________________________________________________________
 HV9908* NAD 83(2011) POSITION- 38 42 13.42960(N) 076 46 19.68184(W)   ADJUSTED
 HV9908* NAD 83(2011) ELLIP HT-    17.490 (meters)        (06/27/12)   ADJUSTED
 HV9908* NAD 83(2011) EPOCH   -  2010.00
 HV9908* NAVD 88 ORTHO HEIGHT -    50.6   (meters)      166.    (feet) GPS OBS
 HV9908  ______________________________________________________________________
 HV9908  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9908  GEOID HEIGHT    -        -33.460 (meters)                     GEOID93
 HV9908  GEOID HEIGHT    -        -33.118 (meters)                     GEOID18
 HV9908  NAD 83(2011) X  -  1,140,454.367 (meters)                     COMP
 HV9908  NAD 83(2011) Y  - -4,851,736.826 (meters)                     COMP
 HV9908  NAD 83(2011) Z  -  3,966,714.485 (meters)                     COMP
 HV9908  LAPLACE CORR    -         -5.53  (seconds)                    DEFLEC18
 HV9908
 HV9908  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9908  Standards:
 HV9908         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9908            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9908  -------------------------------------------------------------------
 HV9908  NETWORK    1.27   2.92           0.54   0.50   1.49     -0.04781963
 HV9908  -------------------------------------------------------------------
 HV9908  Click here for local accuracies and other accuracy information.
 HV9908
 HV9908.The horizontal coordinates were established by GPS observations
 HV9908.and adjusted by the National Geodetic Survey in June 2012.
 HV9908
 HV9908.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9908.been affixed to the stable North American tectonic plate. See 
 HV9908.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9908
 HV9908.The horizontal coordinates are valid at the epoch date displayed above
 HV9908.which is a decimal equivalence of Year/Month/Day.
 HV9908
 HV9908.The orthometric height was determined by GPS observations and a
 HV9908.high-resolution geoid model.
 HV9908
 HV9908.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9908.GEOID18 height accuracy estimate available here.
 HV9908
 HV9908.Click photographs - Photos may exist for this station.
 HV9908
 HV9908.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9908
 HV9908.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9908
 HV9908.The ellipsoidal height was determined by GPS observations
 HV9908.and is referenced to NAD 83.
 HV9908
 HV9908. The following values were computed from the NAD 83(2011) position.
 HV9908
 HV9908;                    North         East     Units Scale Factor Converg.
 HV9908;SPC MD       -   115,142.885   419,820.354   MT  0.99995433   +0 08 34.9
 HV9908;SPC MD       -   377,764.62  1,377,360.61   sFT  0.99995433   +0 08 34.9
 HV9908;UTM  18      - 4,285,390.442   345,904.526   MT  0.99989241   -1 06 30.0
 HV9908
 HV9908!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9908!SPC MD       -   0.99999726  x   0.99995433  =   0.99995159
 HV9908!UTM  18      -   0.99999726  x   0.99989241  =   0.99988967
 HV9908
 HV9908_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4590485390(NAD 83)
 HV9908
 HV9908                          SUPERSEDED SURVEY CONTROL
 HV9908
 HV9908  NAD 83(2007)-  38 42 13.42974(N)    076 46 19.68299(W) AD(2002.00) 0
 HV9908  ELLIP H (02/10/07)   17.460  (m)                       GP(2002.00)    
 HV9908  ELLIP H (08/30/02)   17.456  (m)                       GP(       ) 4 2
 HV9908  NAD 83(1993)-  38 42 13.42934(N)    076 46 19.68314(W) AD(       ) 1
 HV9908  ELLIP H (11/14/94)   17.495  (m)                       GP(       ) 4 2
 HV9908  ELLIP H (09/09/94)   17.475  (m)                       GP(       ) 4 1
 HV9908  NAD 83(1991)-  38 42 13.42892(N)    076 46 19.68359(W) AD(       ) 1
 HV9908
 HV9908.Superseded values are not recommended for survey control.
 HV9908
 HV9908.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9908.See file dsdata.pdf to determine how the superseded data were derived.
 HV9908
 HV9908_MARKER: DD = SURVEY DISK
 HV9908_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9908_STAMPING: T.S. 20393 PG
 HV9908_MARK LOGO: WSSC
 HV9908_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9908_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9908+STABILITY: SURFACE MOTION
 HV9908_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9908+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9908
 HV9908  HISTORY     - Date     Condition        Report By
 HV9908  HISTORY     - 1993     MONUMENTED       MSI
 HV9908
 HV9908                          STATION DESCRIPTION
 HV9908
 HV9908'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9908'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9908'APPROXIMATELY 3.0 MI (4.8 KM) NORTH OF THE TOWN OF BADEN.  TO REACH
 HV9908'THE STATION FROM THE INTERSECTION OF BRANDYWINE ROAD (S.R. 381) AND
 HV9908'NORTH KEYS ROAD, PROCEED EAST ALONG NORTH KEYS ROAD FOR 1.9 MI
 HV9908'(3.1 KM) TO A Y-INTERSECTION WITH MARTIN ROAD.  TURN RIGHT AND TRAVEL
 HV9908'EAST ALONG MARTIN ROAD FOR 1.8 MI (2.9 KM) TO THE STATION ON THE LEFT
 HV9908'AT THE POWER LINE CROSSING.
 HV9908'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9908'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9908'T.S. 20393 PG.  THE DISK IS LOCATED 97.7 FT (29.8 M) NORTHWEST FROM
 HV9908'THE CENTER OF A GATE, 5.6 FT (1.7 M) SOUTHWEST OF THE CENTER LINE OF
 HV9908'THE DIRT SERVICE ROAD, AND 1.5 FT (0.5 M) SOUTH OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9909 ***********************************************************************
 HV9909  DESIGNATION -  20394
 HV9909  PID         -  HV9909
 HV9909  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9909  COUNTRY     -  US
 HV9909  USGS QUAD   -  BRANDYWINE (2016)
 HV9909
 HV9909                         *CURRENT SURVEY CONTROL
 HV9909  ______________________________________________________________________
 HV9909* NAD 83(2011) POSITION- 38 44 46.14559(N) 076 46 22.99781(W)   ADJUSTED
 HV9909* NAD 83(2011) ELLIP HT-    25.777 (meters)        (06/27/12)   ADJUSTED
 HV9909* NAD 83(2011) EPOCH   -  2010.00
 HV9909* NAVD 88 ORTHO HEIGHT -    58.7   (meters)      193.    (feet) GPS OBS
 HV9909  ______________________________________________________________________
 HV9909  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9909  GEOID HEIGHT    -        -33.360 (meters)                     GEOID93
 HV9909  GEOID HEIGHT    -        -33.007 (meters)                     GEOID18
 HV9909  NAD 83(2011) X  -  1,139,703.781 (meters)                     COMP
 HV9909  NAD 83(2011) Y  - -4,848,893.618 (meters)                     COMP
 HV9909  NAD 83(2011) Z  -  3,970,393.585 (meters)                     COMP
 HV9909  LAPLACE CORR    -         -5.94  (seconds)                    DEFLEC18
 HV9909
 HV9909  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9909  Standards:
 HV9909         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9909            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9909  -------------------------------------------------------------------
 HV9909  NETWORK    1.27   2.74           0.56   0.47   1.40      0.00968575
 HV9909  -------------------------------------------------------------------
 HV9909  Click here for local accuracies and other accuracy information.
 HV9909
 HV9909.The horizontal coordinates were established by GPS observations
 HV9909.and adjusted by the National Geodetic Survey in June 2012.
 HV9909
 HV9909.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9909.been affixed to the stable North American tectonic plate. See 
 HV9909.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9909
 HV9909.The horizontal coordinates are valid at the epoch date displayed above
 HV9909.which is a decimal equivalence of Year/Month/Day.
 HV9909
 HV9909.The orthometric height was determined by GPS observations and a
 HV9909.high-resolution geoid model.
 HV9909
 HV9909.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9909.GEOID18 height accuracy estimate available here.
 HV9909
 HV9909.Click photographs - Photos may exist for this station.
 HV9909
 HV9909.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9909
 HV9909.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9909
 HV9909.The ellipsoidal height was determined by GPS observations
 HV9909.and is referenced to NAD 83.
 HV9909
 HV9909. The following values were computed from the NAD 83(2011) position.
 HV9909
 HV9909;                    North         East     Units Scale Factor Converg.
 HV9909;SPC MD       -   119,851.628   419,728.527   MT  0.99995240   +0 08 32.8
 HV9909;SPC MD       -   393,213.22  1,377,059.34   sFT  0.99995240   +0 08 32.8
 HV9909;UTM  18      - 4,290,099.781   345,915.593   MT  0.99989237   -1 06 35.7
 HV9909
 HV9909!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9909!SPC MD       -   0.99999596  x   0.99995240  =   0.99994836
 HV9909!UTM  18      -   0.99999596  x   0.99989237  =   0.99988833
 HV9909
 HV9909_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4591590099(NAD 83)
 HV9909
 HV9909                          SUPERSEDED SURVEY CONTROL
 HV9909
 HV9909  NAD 83(2007)-  38 44 46.14570(N)    076 46 22.99907(W) AD(2002.00) 0
 HV9909  ELLIP H (02/10/07)   25.737  (m)                       GP(2002.00)    
 HV9909  ELLIP H (08/30/02)   25.732  (m)                       GP(       ) 4 2
 HV9909  NAD 83(1993)-  38 44 46.14552(N)    076 46 22.99923(W) AD(       ) 1
 HV9909  ELLIP H (11/14/94)   25.762  (m)                       GP(       ) 4 2
 HV9909  ELLIP H (09/09/94)   25.741  (m)                       GP(       ) 4 1
 HV9909  NAD 83(1991)-  38 44 46.14526(N)    076 46 22.99963(W) AD(       ) 1
 HV9909
 HV9909.Superseded values are not recommended for survey control.
 HV9909
 HV9909.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9909.See file dsdata.pdf to determine how the superseded data were derived.
 HV9909
 HV9909_MARKER: DD = SURVEY DISK
 HV9909_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9909_STAMPING: T.S. 20394 PG
 HV9909_MARK LOGO: WSSC
 HV9909_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9909_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9909+STABILITY: SURFACE MOTION
 HV9909_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9909+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9909
 HV9909  HISTORY     - Date     Condition        Report By
 HV9909  HISTORY     - 1993     MONUMENTED       MSI
 HV9909
 HV9909                          STATION DESCRIPTION
 HV9909
 HV9909'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9909'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9909'APPROXIMATELY 1.8 MI (2.9 KM) SOUTHEAST OF THE TOWN OF MARLTON.  TO
 HV9909'REACH THE STATION FROM THE INTERSECTION OF CROOM ROAD (S.R. 382) AND
 HV9909'CROOM AIRPORT ROAD, PROCEED SOUTH ALONG CROOM ROAD FOR 0.7 MI
 HV9909'(1.1 KM) TO THE INTERSECTION WITH DULEY STATION ROAD.  TURN RIGHT AND
 HV9909'TRAVEL WEST ALONG DULEY STATION ROAD FOR 0.6 MI (1.0 KM) TO THE FIRST
 HV9909'INTERSECTION WITH BELLEFIELD ROAD, AND THE STATION ON THE RIGHT.
 HV9909'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9909'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9909'T.S. 20394 PG.  THE DISK IS LOCATED 26.5 FT (8.1 M) NORTHWEST OF
 HV9909'THE CENTER LINE OF DULEY STATION ROAD, 24.2 FT (7.4 M) NORTHEAST OF
 HV9909'THE CENTER LINE OF BELLEFIELD ROAD, AND 6.2 FT (1.9 M) SOUTHEAST OF A
 HV9909'WHITE FENCE CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9910 ***********************************************************************
 HV9910  DESIGNATION -  20395
 HV9910  PID         -  HV9910
 HV9910  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9910  COUNTRY     -  US
 HV9910  USGS QUAD   -  BRANDYWINE (2016)
 HV9910
 HV9910                         *CURRENT SURVEY CONTROL
 HV9910  ______________________________________________________________________
 HV9910* NAD 83(2011) POSITION- 38 39 47.05288(N) 076 48 07.95937(W)   ADJUSTED
 HV9910* NAD 83(2011) ELLIP HT-    32.328 (meters)        (06/27/12)   ADJUSTED
 HV9910* NAD 83(2011) EPOCH   -  2010.00
 HV9910* NAVD 88 ORTHO HEIGHT -    65.4   (meters)      215.    (feet) GPS OBS
 HV9910  ______________________________________________________________________
 HV9910  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9910  GEOID HEIGHT    -        -33.480 (meters)                     GEOID93
 HV9910  GEOID HEIGHT    -        -33.132 (meters)                     GEOID18
 HV9910  NAD 83(2011) X  -  1,138,554.064 (meters)                     COMP
 HV9910  NAD 83(2011) Y  - -4,855,092.724 (meters)                     COMP
 HV9910  NAD 83(2011) Z  -  3,963,200.326 (meters)                     COMP
 HV9910  LAPLACE CORR    -         -5.50  (seconds)                    DEFLEC18
 HV9910
 HV9910  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9910  Standards:
 HV9910         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9910            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9910  -------------------------------------------------------------------
 HV9910  NETWORK    1.24   2.74           0.55   0.46   1.40     -0.01296560
 HV9910  -------------------------------------------------------------------
 HV9910  Click here for local accuracies and other accuracy information.
 HV9910
 HV9910.The horizontal coordinates were established by GPS observations
 HV9910.and adjusted by the National Geodetic Survey in June 2012.
 HV9910
 HV9910.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9910.been affixed to the stable North American tectonic plate. See 
 HV9910.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9910
 HV9910.The horizontal coordinates are valid at the epoch date displayed above
 HV9910.which is a decimal equivalence of Year/Month/Day.
 HV9910
 HV9910.The orthometric height was determined by GPS observations and a
 HV9910.high-resolution geoid model.
 HV9910
 HV9910.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9910.GEOID18 height accuracy estimate available here.
 HV9910
 HV9910.Click photographs - Photos may exist for this station.
 HV9910
 HV9910.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9910
 HV9910.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9910
 HV9910.The ellipsoidal height was determined by GPS observations
 HV9910.and is referenced to NAD 83.
 HV9910
 HV9910. The following values were computed from the NAD 83(2011) position.
 HV9910
 HV9910;                    North         East     Units Scale Factor Converg.
 HV9910;SPC MD       -   110,623.331   417,213.958   MT  0.99995670   +0 07 26.9
 HV9910;SPC MD       -   362,936.71  1,368,809.46   sFT  0.99995670   +0 07 26.9
 HV9910;UTM  18      - 4,280,929.118   343,200.251   MT  0.99990277   -1 07 34.1
 HV9910
 HV9910!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9910!SPC MD       -   0.99999493  x   0.99995670  =   0.99995163
 HV9910!UTM  18      -   0.99999493  x   0.99990277  =   0.99989770
 HV9910
 HV9910_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4320080929(NAD 83)
 HV9910
 HV9910                          SUPERSEDED SURVEY CONTROL
 HV9910
 HV9910  NAD 83(2007)-  38 39 47.05299(N)    076 48 07.96048(W) AD(2002.00) 0
 HV9910  ELLIP H (02/10/07)   32.296  (m)                       GP(2002.00)    
 HV9910  ELLIP H (08/30/02)   32.294  (m)                       GP(       ) 4 2
 HV9910  NAD 83(1993)-  38 39 47.05253(N)    076 48 07.96065(W) AD(       ) 1
 HV9910  ELLIP H (11/14/94)   32.341  (m)                       GP(       ) 4 2
 HV9910  ELLIP H (09/09/94)   32.325  (m)                       GP(       ) 4 1
 HV9910  NAD 83(1991)-  38 39 47.05207(N)    076 48 07.96109(W) AD(       ) 1
 HV9910
 HV9910.Superseded values are not recommended for survey control.
 HV9910
 HV9910.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9910.See file dsdata.pdf to determine how the superseded data were derived.
 HV9910
 HV9910_MARKER: DD = SURVEY DISK
 HV9910_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9910_STAMPING: T.S. 20395 PG
 HV9910_MARK LOGO: WSSC
 HV9910_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9910_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9910+STABILITY: SURFACE MOTION
 HV9910_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9910+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9910
 HV9910  HISTORY     - Date     Condition        Report By
 HV9910  HISTORY     - 1993     MONUMENTED       MSI
 HV9910
 HV9910                          STATION DESCRIPTION
 HV9910
 HV9910'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9910'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, IN THE TOWN
 HV9910'OF CEDARVILLE NEAR THE CEDARVILLE GROCERY STORE.  TO REACH THE
 HV9910'STATION FROM THE INTERSECTION OF BRANDYWINE ROAD (S.R. 381) AND
 HV9910'CEDARVILLE ROAD, PROCEED WEST ALONG CEDARVILLE ROAD FOR 0.8 MI
 HV9910'(1.3 KM) TO THE INTERSECTION WITH ASHBOX ROAD, AND THE STATION ON THE
 HV9910'RIGHT.
 HV9910'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9910'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9910'T.S. 20395 PG.  THE DISK IS LOCATED 22.1 FT (6.7 M) NORTH OF THE
 HV9910'CEDARVILLE AND ASHBOX ROAD SIGNS, 90.4 FT (27.6 M) EAST OF THE RAIL
 HV9910'ROAD SIGNAL LIGHT, 27.5 FT (8.4 M) NORTHWEST OF A STOP SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9911 ***********************************************************************
 HV9911  DESIGNATION -  20396
 HV9911  PID         -  HV9911
 HV9911  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9911  COUNTRY     -  US
 HV9911  USGS QUAD   -  BRANDYWINE (2016)
 HV9911
 HV9911                         *CURRENT SURVEY CONTROL
 HV9911  ______________________________________________________________________
 HV9911* NAD 83(2011) POSITION- 38 41 55.73459(N) 076 48 00.92753(W)   ADJUSTED
 HV9911* NAD 83(2011) ELLIP HT-    34.354 (meters)        (06/27/12)   ADJUSTED
 HV9911* NAD 83(2011) EPOCH   -  2010.00
 HV9911* NAVD 88 ORTHO HEIGHT -    67.3   (meters)      221.    (feet) GPS OBS
 HV9911  ______________________________________________________________________
 HV9911  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9911  GEOID HEIGHT    -        -33.390 (meters)                     GEOID93
 HV9911  GEOID HEIGHT    -        -33.045 (meters)                     GEOID18
 HV9911  NAD 83(2011) X  -  1,138,153.651 (meters)                     COMP
 HV9911  NAD 83(2011) Y  - -4,852,641.007 (meters)                     COMP
 HV9911  NAD 83(2011) Z  -  3,966,299.198 (meters)                     COMP
 HV9911  LAPLACE CORR    -         -5.93  (seconds)                    DEFLEC18
 HV9911
 HV9911  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9911  Standards:
 HV9911         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9911            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9911  -------------------------------------------------------------------
 HV9911  NETWORK    1.14   2.55           0.48   0.45   1.30     -0.07248589
 HV9911  -------------------------------------------------------------------
 HV9911  Click here for local accuracies and other accuracy information.
 HV9911
 HV9911.The horizontal coordinates were established by GPS observations
 HV9911.and adjusted by the National Geodetic Survey in June 2012.
 HV9911
 HV9911.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9911.been affixed to the stable North American tectonic plate. See 
 HV9911.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9911
 HV9911.The horizontal coordinates are valid at the epoch date displayed above
 HV9911.which is a decimal equivalence of Year/Month/Day.
 HV9911
 HV9911.The orthometric height was determined by GPS observations and a
 HV9911.high-resolution geoid model.
 HV9911
 HV9911.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9911.GEOID18 height accuracy estimate available here.
 HV9911
 HV9911.Click photographs - Photos may exist for this station.
 HV9911
 HV9911.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9911
 HV9911.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9911
 HV9911.The ellipsoidal height was determined by GPS observations
 HV9911.and is referenced to NAD 83.
 HV9911
 HV9911. The following values were computed from the NAD 83(2011) position.
 HV9911
 HV9911;                    North         East     Units Scale Factor Converg.
 HV9911;SPC MD       -   114,591.537   417,375.275   MT  0.99995459   +0 07 31.3
 HV9911;SPC MD       -   375,955.73  1,369,338.71   sFT  0.99995459   +0 07 31.3
 HV9911;UTM  18      - 4,284,892.647   343,448.131   MT  0.99990181   -1 07 32.9
 HV9911
 HV9911!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9911!SPC MD       -   0.99999461  x   0.99995459  =   0.99994920
 HV9911!UTM  18      -   0.99999461  x   0.99990181  =   0.99989642
 HV9911
 HV9911_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4344884892(NAD 83)
 HV9911
 HV9911                          SUPERSEDED SURVEY CONTROL
 HV9911
 HV9911  NAD 83(2007)-  38 41 55.73462(N)    076 48 00.92876(W) AD(2002.00) 0
 HV9911  ELLIP H (02/10/07)   34.310  (m)                       GP(2002.00)    
 HV9911  ELLIP H (08/30/02)   34.309  (m)                       GP(       ) 4 2
 HV9911  NAD 83(1993)-  38 41 55.73435(N)    076 48 00.92893(W) AD(       ) 1
 HV9911  ELLIP H (11/14/94)   34.351  (m)                       GP(       ) 4 2
 HV9911  ELLIP H (09/09/94)   34.332  (m)                       GP(       ) 4 1
 HV9911  NAD 83(1991)-  38 41 55.73402(N)    076 48 00.92937(W) AD(       ) 1
 HV9911
 HV9911.Superseded values are not recommended for survey control.
 HV9911
 HV9911.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9911.See file dsdata.pdf to determine how the superseded data were derived.
 HV9911
 HV9911_MARKER: DD = SURVEY DISK
 HV9911_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9911_STAMPING: T.S. 20396 PG
 HV9911_MARK LOGO: WSSC
 HV9911_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9911_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9911+STABILITY: SURFACE MOTION
 HV9911_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9911+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9911
 HV9911  HISTORY     - Date     Condition        Report By
 HV9911  HISTORY     - 1993     MONUMENTED       MSI
 HV9911
 HV9911                          STATION DESCRIPTION
 HV9911
 HV9911'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9911'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9911'APPROXIMATELY 3.1 MI (5.0 KM) NORTHWEST OF THE TOWN OF BADEN.  TO
 HV9911'REACH THE STATION FROM THE INTERSECTION OF BRANDYWINE ROAD (S.R. 381)
 HV9911'AND NORTH KEYS ROAD, PROCEED EAST ALONG NORTH KEYS ROAD FOR 1.5 MI
 HV9911'(2.4 KM) TO THE STATION ON THE LEFT.
 HV9911'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9911'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9911'T.S. 20396 PG.  THE DISK IS LOCATED 22.0 FT (6.7 M) NORTH OF THE
 HV9911'CENTERLINE OF NORTH KEYS ROAD, 138.0 FT (42.1 M) EAST OF THE
 HV9911'CENTERLINE OF THE DRIVEWAY TO HOUSE NO. 11700, AND 28.8 FT (8.8 M)
 HV9911'WEST OF A POWER POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9912 ***********************************************************************
 HV9912  DESIGNATION -  20397
 HV9912  PID         -  HV9912
 HV9912  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9912  COUNTRY     -  US
 HV9912  USGS QUAD   -  MOUNT VERNON (2019)
 HV9912
 HV9912                         *CURRENT SURVEY CONTROL
 HV9912  ______________________________________________________________________
 HV9912* NAD 83(2011) POSITION- 38 43 55.21119(N) 077 00 46.25996(W)   ADJUSTED
 HV9912* NAD 83(2011) ELLIP HT-   -12.028 (meters)        (06/27/12)   ADJUSTED
 HV9912* NAD 83(2011) EPOCH   -  2010.00
 HV9912* NAVD 88 ORTHO HEIGHT -    20.4   (meters)       67.    (feet) GPS OBS
 HV9912  ______________________________________________________________________
 HV9912  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9912  GEOID HEIGHT    -        -32.790 (meters)                     GEOID93
 HV9912  GEOID HEIGHT    -        -32.421 (meters)                     GEOID18
 HV9912  NAD 83(2011) X  -  1,119,614.459 (meters)                     COMP
 HV9912  NAD 83(2011) Y  - -4,854,550.025 (meters)                     COMP
 HV9912  NAD 83(2011) Z  -  3,969,144.832 (meters)                     COMP
 HV9912  LAPLACE CORR    -         -2.72  (seconds)                    DEFLEC18
 HV9912
 HV9912  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9912  Standards:
 HV9912         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9912            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9912  -------------------------------------------------------------------
 HV9912  NETWORK    1.22   2.78           0.52   0.48   1.42      0.05242592
 HV9912  -------------------------------------------------------------------
 HV9912  Click here for local accuracies and other accuracy information.
 HV9912
 HV9912.The horizontal coordinates were established by GPS observations
 HV9912.and adjusted by the National Geodetic Survey in June 2012.
 HV9912
 HV9912.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9912.been affixed to the stable North American tectonic plate. See 
 HV9912.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9912
 HV9912.The horizontal coordinates are valid at the epoch date displayed above
 HV9912.which is a decimal equivalence of Year/Month/Day.
 HV9912
 HV9912.The orthometric height was determined by GPS observations and a
 HV9912.high-resolution geoid model.
 HV9912
 HV9912.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9912.GEOID18 height accuracy estimate available here.
 HV9912
 HV9912.Click photographs - Photos may exist for this station.
 HV9912
 HV9912.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9912
 HV9912.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9912
 HV9912.The ellipsoidal height was determined by GPS observations
 HV9912.and is referenced to NAD 83.
 HV9912
 HV9912. The following values were computed from the NAD 83(2011) position.
 HV9912
 HV9912;                    North         East     Units Scale Factor Converg.
 HV9912;SPC MD       -   118,256.632   398,882.717   MT  0.99995298   -0 00 29.0
 HV9912;SPC MD       -   387,980.30  1,308,667.71   sFT  0.99995298   -0 00 29.0
 HV9912;SPC VA N     - 2,119,298.640 3,629,298.948   MT  0.99995038   +0 55 41.4
 HV9912;SPC VA N     - 6,953,065.62 11,907,124.97   sFT  0.99995038   +0 55 41.4
 HV9912;UTM  18      - 4,288,960.668   325,040.304   MT  0.99997696   -1 15 35.0
 HV9912
 HV9912!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9912!SPC MD       -   1.00000189  x   0.99995298  =   0.99995487
 HV9912!SPC VA N     -   1.00000189  x   0.99995038  =   0.99995227
 HV9912!UTM  18      -   1.00000189  x   0.99997696  =   0.99997885
 HV9912
 HV9912_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2504088960(NAD 83)
 HV9912
 HV9912                          SUPERSEDED SURVEY CONTROL
 HV9912
 HV9912  NAD 83(2007)-  38 43 55.21164(N)    077 00 46.26080(W) AD(2002.00) 0
 HV9912  ELLIP H (02/10/07)  -12.026  (m)                       GP(2002.00)    
 HV9912  ELLIP H (08/30/02)  -12.019  (m)                       GP(       ) 4 2
 HV9912  NAD 83(1993)-  38 43 55.21150(N)    077 00 46.26129(W) AD(       ) 1
 HV9912  ELLIP H (11/14/94)  -11.993  (m)                       GP(       ) 4 2
 HV9912  ELLIP H (09/09/94)  -12.000  (m)                       GP(       ) 4 1
 HV9912  NAD 83(1991)-  38 43 55.21058(N)    077 00 46.26193(W) AD(       ) 1
 HV9912
 HV9912.Superseded values are not recommended for survey control.
 HV9912
 HV9912.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9912.See file dsdata.pdf to determine how the superseded data were derived.
 HV9912
 HV9912_MARKER: DD = SURVEY DISK
 HV9912_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9912_STAMPING: T.S. 20397 PG
 HV9912_MARK LOGO: WSSC
 HV9912_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9912_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9912+STABILITY: SURFACE MOTION
 HV9912_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9912+SATELLITE: SATELLITE OBSERVATIONS - July 09, 1998
 HV9912
 HV9912  HISTORY     - Date     Condition        Report By
 HV9912  HISTORY     - 1993     MONUMENTED       MSI
 HV9912  HISTORY     - 19980709 GOOD             DMW
 HV9912
 HV9912                          STATION DESCRIPTION
 HV9912
 HV9912'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9912'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9912'APPROXIMATELY 1.1 MI (1.8 KM) NORTH OF THE TOWN OF TANTALLON. TO
 HV9912'REACH THE STATION FROM THE INTERSECTION OF FORT WASHINGTON ROAD AND
 HV9912'INDIAN HEAD HIGHWAY, PROCEED SOUTH ALONG FORT WASHINGTON ROAD UNTIL
 HV9912'THE INTERSECTION OF FORT WASHINGTON ROAD AND AUTUMNWOOD LANE. PROCEED
 HV9912'WEST ALONG AUTUMNWOOD LANE FOR 0.5 MI (0.8 KM) TO THE ENTRANCE ROAD
 HV9912'OF TANTALLON NORTH NEIGHBORHOOD PARK. PROCEED NORTH INTO THE PARKING
 HV9912'AREA AND TO THE STATION ON THE NORTH SIDE OF THE PARKING AREA.
 HV9912'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9912'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9912'T.S. 20397 PG.  THE DISK IS LOCATED 15.6 FT (4.8 M) NORTH OF THE
 HV9912'EDGE OF THE PAVED PARKING AREA, 36.1 FT (11.0 M) SOUTHEAST OF THE
 HV9912'EASTERN GOAL POST, AND 101.0 FT (30.8 M) EAST OF THE NORTHWEST CORNER
 HV9912'OF THE PAVED PARKING AREA.
 HV9912
 HV9912                          STATION RECOVERY (1998)
 HV9912
 HV9912'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 HV9912'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9913 ***********************************************************************
 HV9913  DESIGNATION -  20398
 HV9913  PID         -  HV9913
 HV9913  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9913  COUNTRY     -  US
 HV9913  USGS QUAD   -  BRANDYWINE (2016)
 HV9913
 HV9913                         *CURRENT SURVEY CONTROL
 HV9913  ______________________________________________________________________
 HV9913* NAD 83(2011) POSITION- 38 43 25.73806(N) 076 49 51.57185(W)   ADJUSTED
 HV9913* NAD 83(2011) ELLIP HT-    39.446 (meters)        (06/27/12)   ADJUSTED
 HV9913* NAD 83(2011) EPOCH   -  2010.00
 HV9913* NAVD 88 ORTHO HEIGHT -    72.2   (meters)      237.    (feet) GPS OBS
 HV9913  ______________________________________________________________________
 HV9913  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9913  GEOID HEIGHT    -        -33.240 (meters)                     GEOID93
 HV9913  GEOID HEIGHT    -        -32.879 (meters)                     GEOID18
 HV9913  NAD 83(2011) X  -  1,135,155.908 (meters)                     COMP
 HV9913  NAD 83(2011) Y  - -4,851,564.641 (meters)                     COMP
 HV9913  NAD 83(2011) Z  -  3,968,468.025 (meters)                     COMP
 HV9913  LAPLACE CORR    -         -5.99  (seconds)                    DEFLEC18
 HV9913
 HV9913  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9913  Standards:
 HV9913         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9913            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9913  -------------------------------------------------------------------
 HV9913  NETWORK    1.17   2.31           0.45   0.50   1.18     -0.22948072
 HV9913  -------------------------------------------------------------------
 HV9913  Click here for local accuracies and other accuracy information.
 HV9913
 HV9913.The horizontal coordinates were established by GPS observations
 HV9913.and adjusted by the National Geodetic Survey in June 2012.
 HV9913
 HV9913.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9913.been affixed to the stable North American tectonic plate. See 
 HV9913.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9913
 HV9913.The horizontal coordinates are valid at the epoch date displayed above
 HV9913.which is a decimal equivalence of Year/Month/Day.
 HV9913
 HV9913.The orthometric height was determined by GPS observations and a
 HV9913.high-resolution geoid model.
 HV9913
 HV9913.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9913.GEOID18 height accuracy estimate available here.
 HV9913
 HV9913.Click photographs - Photos may exist for this station.
 HV9913
 HV9913.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9913
 HV9913.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9913
 HV9913.The ellipsoidal height was determined by GPS observations
 HV9913.and is referenced to NAD 83.
 HV9913
 HV9913. The following values were computed from the NAD 83(2011) position.
 HV9913
 HV9913;                    North         East     Units Scale Factor Converg.
 HV9913;SPC MD       -   117,361.361   414,696.591   MT  0.99995335   +0 06 21.9
 HV9913;SPC MD       -   385,043.07  1,360,550.40   sFT  0.99995335   +0 06 21.9
 HV9913;UTM  18      - 4,287,720.180   340,830.703   MT  0.99991199   -1 08 44.3
 HV9913
 HV9913!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9913!SPC MD       -   0.99999381  x   0.99995335  =   0.99994716
 HV9913!UTM  18      -   0.99999381  x   0.99991199  =   0.99990580
 HV9913
 HV9913_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4083087720(NAD 83)
 HV9913
 HV9913                          SUPERSEDED SURVEY CONTROL
 HV9913
 HV9913  NAD 83(2007)-  38 43 25.73817(N)    076 49 51.57365(W) AD(2002.00) 0
 HV9913  ELLIP H (02/10/07)   39.362  (m)                       GP(2002.00)    
 HV9913  ELLIP H (08/30/02)   39.364  (m)                       GP(       ) 4 2
 HV9913  NAD 83(1993)-  38 43 25.73798(N)    076 49 51.57380(W) AD(       ) 1
 HV9913  ELLIP H (11/14/94)   39.410  (m)                       GP(       ) 4 2
 HV9913  ELLIP H (09/09/94)   39.380  (m)                       GP(       ) 4 1
 HV9913  NAD 83(1991)-  38 43 25.73779(N)    076 49 51.57433(W) AD(       ) 1
 HV9913
 HV9913.Superseded values are not recommended for survey control.
 HV9913
 HV9913.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9913.See file dsdata.pdf to determine how the superseded data were derived.
 HV9913
 HV9913_MARKER: DD = SURVEY DISK
 HV9913_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9913_STAMPING: T.S. 20398 PG
 HV9913_MARK LOGO: WSSC
 HV9913_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9913_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9913+STABILITY: SURFACE MOTION
 HV9913_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9913+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9913
 HV9913  HISTORY     - Date     Condition        Report By
 HV9913  HISTORY     - 1993     MONUMENTED       MSI
 HV9913
 HV9913                          STATION DESCRIPTION
 HV9913
 HV9913'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9913'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9913'APPROXIMATELY 1.1 MI (1.8 KM) WEST OF THE TOWN OF CHELTENHAM. TO
 HV9913'REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (I.S.301)
 HV9913'AND CHERRY TREE CROSSING ROAD, PROCEED SOUTH ALONG CHERRY TREE
 HV9913'CROSSING ROAD FOR 0.6 MI (1.0 KM) TO THE STATION ON THE EAST SIDE OF
 HV9913'CHERRY TREE CROSSING ROAD.
 HV9913'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9913'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9913'T.S. 20398 PG.  THE DISK IS LOCATED 43.7 FT (13.3 M) NORTHEAST OF
 HV9913'THE CENTERLINE OF CHERRY TREE CROSSING ROAD, 61.O FT NORTHEAST OF THE
 HV9913'POWER POLE 848324-0832, AND 20.3 FT (6.2 M) SOUTHWEST FROM THE
 HV9913'CENTERLINE OF THE RAILWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9914 ***********************************************************************
 HV9914  DESIGNATION -  20399
 HV9914  PID         -  HV9914
 HV9914  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9914  COUNTRY     -  US
 HV9914  USGS QUAD   -  BRANDYWINE (2016)
 HV9914
 HV9914                         *CURRENT SURVEY CONTROL
 HV9914  ______________________________________________________________________
 HV9914* NAD 83(2011) POSITION- 38 39 24.43076(N) 076 51 21.71584(W)   ADJUSTED
 HV9914* NAD 83(2011) ELLIP HT-    27.506 (meters)        (06/27/12)   ADJUSTED
 HV9914* NAD 83(2011) EPOCH   -  2010.00
 HV9914* NAVD 88 ORTHO HEIGHT -    60.5   (meters)      198.    (feet) GPS OBS
 HV9914  ______________________________________________________________________
 HV9914  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9914  GEOID HEIGHT    -        -33.340 (meters)                     GEOID93
 HV9914  GEOID HEIGHT    -        -32.989 (meters)                     GEOID18
 HV9914  NAD 83(2011) X  -  1,134,091.131 (meters)                     COMP
 HV9914  NAD 83(2011) Y  - -4,856,580.781 (meters)                     COMP
 HV9914  NAD 83(2011) Z  -  3,962,652.599 (meters)                     COMP
 HV9914  LAPLACE CORR    -         -5.64  (seconds)                    DEFLEC18
 HV9914
 HV9914  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9914  Standards:
 HV9914         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9914            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9914  -------------------------------------------------------------------
 HV9914  NETWORK    0.94   2.08           0.41   0.35   1.06      0.11559069
 HV9914  -------------------------------------------------------------------
 HV9914  Click here for local accuracies and other accuracy information.
 HV9914
 HV9914.The horizontal coordinates were established by GPS observations
 HV9914.and adjusted by the National Geodetic Survey in June 2012.
 HV9914
 HV9914.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9914.been affixed to the stable North American tectonic plate. See 
 HV9914.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9914
 HV9914.The horizontal coordinates are valid at the epoch date displayed above
 HV9914.which is a decimal equivalence of Year/Month/Day.
 HV9914
 HV9914.The orthometric height was determined by GPS observations and a
 HV9914.high-resolution geoid model.
 HV9914
 HV9914.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9914.GEOID18 height accuracy estimate available here.
 HV9914
 HV9914.Click photographs - Photos may exist for this station.
 HV9914
 HV9914.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9914
 HV9914.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9914
 HV9914.The ellipsoidal height was determined by GPS observations
 HV9914.and is referenced to NAD 83.
 HV9914
 HV9914. The following values were computed from the NAD 83(2011) position.
 HV9914
 HV9914;                    North         East     Units Scale Factor Converg.
 HV9914;SPC MD       -   109,917.022   412,530.898   MT  0.99995712   +0 05 25.3
 HV9914;SPC MD       -   360,619.43  1,353,445.12   sFT  0.99995712   +0 05 25.3
 HV9914;UTM  18      - 4,280,325.176   338,503.106   MT  0.99992118   -1 09 34.7
 HV9914
 HV9914!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9914!SPC MD       -   0.99999568  x   0.99995712  =   0.99995280
 HV9914!UTM  18      -   0.99999568  x   0.99992118  =   0.99991686
 HV9914
 HV9914_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3850380325(NAD 83)
 HV9914
 HV9914                          SUPERSEDED SURVEY CONTROL
 HV9914
 HV9914  NAD 83(2007)-  38 39 24.43087(N)    076 51 21.71680(W) AD(2002.00) 0
 HV9914  ELLIP H (02/10/07)   27.486  (m)                       GP(2002.00)    
 HV9914  ELLIP H (08/30/02)   27.490  (m)                       GP(       ) 4 2
 HV9914  ELLIP H (09/09/94)   27.550  (m)                       GP(       ) 4 1
 HV9914  NAD 83(1991)-  38 39 24.43033(N)    076 51 21.71722(W) AD(       ) 1
 HV9914
 HV9914.Superseded values are not recommended for survey control.
 HV9914
 HV9914.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9914.See file dsdata.pdf to determine how the superseded data were derived.
 HV9914
 HV9914_MARKER: DD = SURVEY DISK
 HV9914_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9914_STAMPING: T.S. 20399 PG
 HV9914_MARK LOGO: WSSC
 HV9914_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9914_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9914+STABILITY: SURFACE MOTION
 HV9914_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9914+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9914
 HV9914  HISTORY     - Date     Condition        Report By
 HV9914  HISTORY     - 1993     MONUMENTED       MSI
 HV9914
 HV9914                          STATION DESCRIPTION
 HV9914
 HV9914'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9914'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9914'APPROXIMATELY 0.7 MI (1.1 KM) WEST OF THE TOWN OF PINEFIELD. TO REACH
 HV9914'THE STATION FROM THE INTERSECTION OF BRANDYWINE ROAD (S.R.381) AND
 HV9914'CEDARVILLE ROAD, PROCEED EAST ALONG CEDARVILLE ROAD FOR 3.8 MI
 HV9914'(6.1 KM) TO THE INTERSECTION OF CEDARVILLE ROAD AND COUNTRY LANE.
 HV9914'TURN LEFT AND GO SOUTH FOR 0.2 MI (0.3 KM) ALONG COUNTRY LANE TO THE
 HV9914'STATION ON THE LEFT.
 HV9914'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9914'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9914'T.S. 20399 PG.  THE DISK IS LOCATED 29.0 FT (8.8 M) SOUTHEAST OF
 HV9914'THE CENTERLINE OF COUNTRY LANE, 27.0 FT (8.2 M) SOUTH OF THE CENTER
 HV9914'OF CONCRETE CULVERT, AND 18.9 FT (5.8 M) NORTHWEST OF THE FENCELINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2572 ***********************************************************************
 JV2572  DESIGNATION -  2040 WSSC
 JV2572  PID         -  JV2572
 JV2572  STATE/COUNTY-  MD/HOWARD
 JV2572  COUNTRY     -  US
 JV2572  USGS QUAD   -  WOODBINE (2016)
 JV2572
 JV2572                         *CURRENT SURVEY CONTROL
 JV2572  ______________________________________________________________________
 JV2572* NAD 83(1986) POSITION- 39 16 55.     (N) 077 01 06.     (W)   SCALED
 JV2572* NAVD 88 ORTHO HEIGHT -   176.89  (+/-2cm)      580.3   (feet) VERTCON3
 JV2572  ______________________________________________________________________
 JV2572  GEOID HEIGHT    -        -31.876 (meters)                     GEOID18
 JV2572  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2572
 JV2572.The horizontal coordinates were scaled from a map and have
 JV2572.an estimated accuracy of +/- 6 seconds.
 JV2572
 JV2572.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2572.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2572
 JV2572.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2572.GEOID18 height accuracy estimate available here.
 JV2572
 JV2572.The vertical order pertains to the NGVD 29 superseded value.
 JV2572
 JV2572.Click photographs - Photos may exist for this station.
 JV2572
 JV2572;                    North         East    Units  Estimated Accuracy
 JV2572;SPC MD       -   179,310.      398,420.      MT  (+/- 180 meters Scaled)
 JV2572
 JV2572_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ259500(NAD 83)
 JV2572
 JV2572                          SUPERSEDED SURVEY CONTROL
 JV2572
 JV2572  NGVD 29 (11/26/84)  177.102  (m)          581.04   (f) ADJUSTED    2 0
 JV2572
 JV2572.Superseded values are not recommended for survey control.
 JV2572
 JV2572.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2572.See file dsdata.pdf to determine how the superseded data were derived.
 JV2572
 JV2572_MARKER: DD = SURVEY DISK
 JV2572_SETTING: 0 = UNSPECIFIED SETTING
 JV2572_SP_SET: IRON PIPE
 JV2572_STAMPING: 2040
 JV2572_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2572
 JV2572  HISTORY     - Date     Condition        Report By
 JV2572  HISTORY     - UNK      MONUMENTED       WSSC
 JV2572  HISTORY     - 1946     GOOD             WSSC
 JV2572
 JV2572                          STATION DESCRIPTION
 JV2572
 JV2572'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2572'1.7 MI N FROM GARY.
 JV2572'ABOUT 1.7 MILES NORTH ALONG THE GARY-GLENWOOD ROAD FROM THE
 JV2572'JUNCTION OF THE GARY-TRIADELPHIA ROAD AT GARY, HOWARD COUNTY, AT
 JV2572'A RIGHT-ANGLE TURN IN THE ROAD AND THE JUNCTION OF A DIRT ROAD
 JV2572'LEADING NORTH, 17.2 FEET EAST OF THE CENTER LINE OF THE DIRT
 JV2572'ROAD, AND 11 FEET NORTH OF THE PROLONGATION OF THE CENTER LINE
 JV2572'OF THE MAIN ROAD.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV2572'STANDARD DISK, STAMPED 2040 AND SET IN THE TOP OF A CONCRETE-FILLED
 JV2572'IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9915 ***********************************************************************
 HV9915  DESIGNATION -  20400
 HV9915  PID         -  HV9915
 HV9915  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9915  COUNTRY     -  US
 HV9915  USGS QUAD   -  BRANDYWINE (2016)
 HV9915
 HV9915                         *CURRENT SURVEY CONTROL
 HV9915  ______________________________________________________________________
 HV9915* NAD 83(2011) POSITION- 38 41 49.87556(N) 076 51 08.84446(W)   ADJUSTED
 HV9915* NAD 83(2011) ELLIP HT-    37.185 (meters)        (06/27/12)   ADJUSTED
 HV9915* NAD 83(2011) EPOCH   -  2010.00
 HV9915* NAVD 88 ORTHO HEIGHT -    70.0   (meters)      230.    (feet) GPS OBS
 HV9915  ______________________________________________________________________
 HV9915  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9915  GEOID HEIGHT    -        -33.240 (meters)                     GEOID93
 HV9915  GEOID HEIGHT    -        -32.885 (meters)                     GEOID18
 HV9915  NAD 83(2011) X  -  1,133,758.391 (meters)                     COMP
 HV9915  NAD 83(2011) Y  - -4,853,788.053 (meters)                     COMP
 HV9915  NAD 83(2011) Z  -  3,966,159.964 (meters)                     COMP
 HV9915  LAPLACE CORR    -         -5.71  (seconds)                    DEFLEC18
 HV9915
 HV9915  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9915  Standards:
 HV9915         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9915            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9915  -------------------------------------------------------------------
 HV9915  NETWORK    1.07   2.27           0.44   0.43   1.16     -0.00454645
 HV9915  -------------------------------------------------------------------
 HV9915  Click here for local accuracies and other accuracy information.
 HV9915
 HV9915.The horizontal coordinates were established by GPS observations
 HV9915.and adjusted by the National Geodetic Survey in June 2012.
 HV9915
 HV9915.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9915.been affixed to the stable North American tectonic plate. See 
 HV9915.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9915
 HV9915.The horizontal coordinates are valid at the epoch date displayed above
 HV9915.which is a decimal equivalence of Year/Month/Day.
 HV9915
 HV9915.The orthometric height was determined by GPS observations and a
 HV9915.high-resolution geoid model.
 HV9915
 HV9915.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9915.GEOID18 height accuracy estimate available here.
 HV9915
 HV9915.Click photographs - Photos may exist for this station.
 HV9915
 HV9915.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9915
 HV9915.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9915
 HV9915.The ellipsoidal height was determined by GPS observations
 HV9915.and is referenced to NAD 83.
 HV9915
 HV9915. The following values were computed from the NAD 83(2011) position.
 HV9915
 HV9915;                    North         East     Units Scale Factor Converg.
 HV9915;SPC MD       -   114,402.239   412,834.849   MT  0.99995468   +0 05 33.4
 HV9915;SPC MD       -   375,334.68  1,354,442.33   sFT  0.99995468   +0 05 33.4
 HV9915;UTM  18      - 4,284,802.533   338,904.855   MT  0.99991958   -1 09 30.3
 HV9915
 HV9915!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9915!SPC MD       -   0.99999417  x   0.99995468  =   0.99994885
 HV9915!UTM  18      -   0.99999417  x   0.99991958  =   0.99991375
 HV9915
 HV9915_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3890484802(NAD 83)
 HV9915
 HV9915                          SUPERSEDED SURVEY CONTROL
 HV9915
 HV9915  NAD 83(2007)-  38 41 49.87570(N)    076 51 08.84575(W) AD(2002.00) 0
 HV9915  ELLIP H (02/10/07)   37.142  (m)                       GP(2002.00)    
 HV9915  ELLIP H (08/30/02)   37.142  (m)                       GP(       ) 4 2
 HV9915  NAD 83(1993)-  38 41 49.87530(N)    076 51 08.84594(W) AD(       ) 1
 HV9915  ELLIP H (11/14/94)   37.189  (m)                       GP(       ) 4 2
 HV9915  ELLIP H (09/09/94)   37.175  (m)                       GP(       ) 4 1
 HV9915  NAD 83(1991)-  38 41 49.87507(N)    076 51 08.84630(W) AD(       ) 1
 HV9915
 HV9915.Superseded values are not recommended for survey control.
 HV9915
 HV9915.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9915.See file dsdata.pdf to determine how the superseded data were derived.
 HV9915
 HV9915_MARKER: DD = SURVEY DISK
 HV9915_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9915_STAMPING: T.S. 29400 PG
 HV9915_MARK LOGO: WSSC
 HV9915_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9915_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9915+STABILITY: SURFACE MOTION
 HV9915_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9915+SATELLITE: SATELLITE OBSERVATIONS - November 30, 2010
 HV9915
 HV9915  HISTORY     - Date     Condition        Report By
 HV9915  HISTORY     - 1993     MONUMENTED       MSI
 HV9915  HISTORY     - 20101130 GOOD             NGS
 HV9915
 HV9915                          STATION DESCRIPTION
 HV9915
 HV9915'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9915'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, IN THE TOWN
 HV9915'OF BRANDYWINE.  TO REACH THE STATION FROM THE INTERSECTION OF CRAIN
 HV9915'HIGHWAY (U.S. 301) AND BRANDYWINE ROAD (S.R. 381), PROCEED EAST ALONG
 HV9915'BRANDYWINE ROAD FOR 1.0 MI (1.6 KM) TO THE STATION ON THE RIGHT.
 HV9915'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9915'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9915'T.S. 20400 PG.  THE DISK IS LOCATED 1.8 FT (0.5 M) SOUTH OF
 HV9915'BRANDYWINE ROAD (BACK OF CURB), 7.5 FT (2.3 M) NORTH OF THE SIDEWALK,
 HV9915'44.9 FT (13.7 M) WEST OF TELEPHONE POLE N0. CP MD 32 AND 68.2 FT
 HV9915'(20.8 M) NORTHEAST OF THE MIDDLE OF THE ENTRANCE DOORS AT THE NORTH
 HV9915'SIDE OF BRANDYWINE ELEMENTARY SCHOOL.
 HV9915
 HV9915                          STATION RECOVERY (2010)
 HV9915
 HV9915'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HV9915'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9916 ***********************************************************************
 HV9916  DESIGNATION -  20401
 HV9916  PID         -  HV9916
 HV9916  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9916  COUNTRY     -  US
 HV9916  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9916
 HV9916                         *CURRENT SURVEY CONTROL
 HV9916  ______________________________________________________________________
 HV9916* NAD 83(2011) POSITION- 38 47 31.08458(N) 076 46 26.00869(W)   ADJUSTED
 HV9916* NAD 83(2011) ELLIP HT-     3.620 (meters)        (06/27/12)   ADJUSTED
 HV9916* NAD 83(2011) EPOCH   -  2010.00
 HV9916* NAVD 88 ORTHO HEIGHT -    36.5   (meters)      120.    (feet) GPS OBS
 HV9916  ______________________________________________________________________
 HV9916  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9916  GEOID HEIGHT    -        -33.250 (meters)                     GEOID93
 HV9916  GEOID HEIGHT    -        -32.898 (meters)                     GEOID18
 HV9916  NAD 83(2011) X  -  1,138,900.371 (meters)                     COMP
 HV9916  NAD 83(2011) Y  - -4,845,793.063 (meters)                     COMP
 HV9916  NAD 83(2011) Z  -  3,974,345.251 (meters)                     COMP
 HV9916  LAPLACE CORR    -         -6.18  (seconds)                    DEFLEC18
 HV9916
 HV9916  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9916  Standards:
 HV9916         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9916            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9916  -------------------------------------------------------------------
 HV9916  NETWORK    1.02   2.21           0.43   0.40   1.13     -0.06105568
 HV9916  -------------------------------------------------------------------
 HV9916  Click here for local accuracies and other accuracy information.
 HV9916
 HV9916.The horizontal coordinates were established by GPS observations
 HV9916.and adjusted by the National Geodetic Survey in June 2012.
 HV9916
 HV9916.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9916.been affixed to the stable North American tectonic plate. See 
 HV9916.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9916
 HV9916.The horizontal coordinates are valid at the epoch date displayed above
 HV9916.which is a decimal equivalence of Year/Month/Day.
 HV9916
 HV9916.The orthometric height was determined by GPS observations and a
 HV9916.high-resolution geoid model.
 HV9916
 HV9916.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9916.GEOID18 height accuracy estimate available here.
 HV9916
 HV9916.Click photographs - Photos may exist for this station.
 HV9916
 HV9916.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9916
 HV9916.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9916
 HV9916.The ellipsoidal height was determined by GPS observations
 HV9916.and is referenced to NAD 83.
 HV9916
 HV9916. The following values were computed from the NAD 83(2011) position.
 HV9916
 HV9916;                    North         East     Units Scale Factor Converg.
 HV9916;SPC MD       -   124,937.312   419,643.225   MT  0.99995091   +0 08 30.9
 HV9916;SPC MD       -   409,898.50  1,376,779.48   sFT  0.99995091   +0 08 30.9
 HV9916;UTM  18      - 4,295,185.813   345,941.513   MT  0.99989227   -1 06 41.6
 HV9916
 HV9916!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9916!SPC MD       -   0.99999943  x   0.99995091  =   0.99995034
 HV9916!UTM  18      -   0.99999943  x   0.99989227  =   0.99989170
 HV9916
 HV9916_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4594195185(NAD 83)
 HV9916
 HV9916                          SUPERSEDED SURVEY CONTROL
 HV9916
 HV9916  NAD 83(2007)-  38 47 31.08484(N)    076 46 26.00989(W) AD(2002.00) 0
 HV9916  ELLIP H (02/10/07)    3.595  (m)                       GP(2002.00)    
 HV9916  ELLIP H (08/30/02)    3.588  (m)                       GP(       ) 4 2
 HV9916  NAD 83(1993)-  38 47 31.08488(N)    076 46 26.01009(W) AD(       ) 1
 HV9916  ELLIP H (11/14/94)    3.599  (m)                       GP(       ) 4 2
 HV9916  ELLIP H (09/09/94)    3.582  (m)                       GP(       ) 4 1
 HV9916  NAD 83(1991)-  38 47 31.08480(N)    076 46 26.01045(W) AD(       ) 1
 HV9916
 HV9916.Superseded values are not recommended for survey control.
 HV9916
 HV9916.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9916.See file dsdata.pdf to determine how the superseded data were derived.
 HV9916
 HV9916_MARKER: DD = SURVEY DISK
 HV9916_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9916_STAMPING: T.S. 20401 PG
 HV9916_MARK LOGO: WSSC
 HV9916_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9916_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9916+STABILITY: SURFACE MOTION
 HV9916_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9916+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9916
 HV9916  HISTORY     - Date     Condition        Report By
 HV9916  HISTORY     - 1993     MONUMENTED       MSI
 HV9916
 HV9916                          STATION DESCRIPTION
 HV9916
 HV9916'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9916'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9916'APPROXIMATELY 2.0 MI (3.2 KM) SOUTHWEST OF THE TOWN OF UPPER
 HV9916'MARLBORO. TO REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY
 HV9916'(U.S. 301)AND OLD CRAIN HIGHWAY, PROCEED EAST ON CRAIN HIGHWAY FOR
 HV9916'0.4 MI (0.6 KM) TO THE STATION IN MEDIAN, NEAR THE BRAGG MOTEL.
 HV9916'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9916'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9916'T.S. 20401 PG.  THE DISK IS LOCATED 35.2 FT (10.7 M) EAST OF A
 HV9916'STORM SEWER, 10.7 FT (3.3 M) WEST OF THE ONE WAY SIGN AND 32.7 FT
 HV9916'(10.0 M) SOUTH OF THE CENTER LINE OF U.S. 301  WEST BOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9917 ***********************************************************************
 HV9917  DESIGNATION -  20402
 HV9917  PID         -  HV9917
 HV9917  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9917  COUNTRY     -  US
 HV9917  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9917
 HV9917                         *CURRENT SURVEY CONTROL
 HV9917  ______________________________________________________________________
 HV9917* NAD 83(2011) POSITION- 38 50 07.50952(N) 076 46 26.87956(W)   ADJUSTED
 HV9917* NAD 83(2011) ELLIP HT-   -17.902 (meters)        (06/27/12)   ADJUSTED
 HV9917* NAD 83(2011) EPOCH   -  2010.00
 HV9917* NAVD 88 ORTHO HEIGHT -    14.9   (meters)       49.    (feet) GPS OBS
 HV9917  ______________________________________________________________________
 HV9917  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9917  GEOID HEIGHT    -        -33.160 (meters)                     GEOID93
 HV9917  GEOID HEIGHT    -        -32.808 (meters)                     GEOID18
 HV9917  NAD 83(2011) X  -  1,138,184.352 (meters)                     COMP
 HV9917  NAD 83(2011) Y  - -4,842,838.346 (meters)                     COMP
 HV9917  NAD 83(2011) Z  -  3,978,090.266 (meters)                     COMP
 HV9917  LAPLACE CORR    -         -6.11  (seconds)                    DEFLEC18
 HV9917
 HV9917  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9917  Standards:
 HV9917         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9917            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9917  -------------------------------------------------------------------
 HV9917  NETWORK    1.16   2.55           0.47   0.48   1.30     -0.01938204
 HV9917  -------------------------------------------------------------------
 HV9917  Click here for local accuracies and other accuracy information.
 HV9917
 HV9917.The horizontal coordinates were established by GPS observations
 HV9917.and adjusted by the National Geodetic Survey in June 2012.
 HV9917
 HV9917.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9917.been affixed to the stable North American tectonic plate. See 
 HV9917.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9917
 HV9917.The horizontal coordinates are valid at the epoch date displayed above
 HV9917.which is a decimal equivalence of Year/Month/Day.
 HV9917
 HV9917.The orthometric height was determined by GPS observations and a
 HV9917.high-resolution geoid model.
 HV9917
 HV9917.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9917.GEOID18 height accuracy estimate available here.
 HV9917
 HV9917.Click photographs - Photos may exist for this station.
 HV9917
 HV9917.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9917
 HV9917.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9917
 HV9917.The ellipsoidal height was determined by GPS observations
 HV9917.and is referenced to NAD 83.
 HV9917
 HV9917. The following values were computed from the NAD 83(2011) position.
 HV9917
 HV9917;                    North         East     Units Scale Factor Converg.
 HV9917;SPC MD       -   129,760.627   419,610.276   MT  0.99995009   +0 08 30.3
 HV9917;SPC MD       -   425,722.99  1,376,671.38   sFT  0.99995009   +0 08 30.3
 HV9917;UTM  18      - 4,300,008.412   346,014.122   MT  0.99989199   -1 06 45.9
 HV9917
 HV9917!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9917!SPC MD       -   1.00000281  x   0.99995009  =   0.99995290
 HV9917!UTM  18      -   1.00000281  x   0.99989199  =   0.99989480
 HV9917
 HV9917_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4601400008(NAD 83)
 HV9917
 HV9917                          SUPERSEDED SURVEY CONTROL
 HV9917
 HV9917  NAD 83(2007)-  38 50 07.50984(N)    076 46 26.88063(W) AD(2002.00) 0
 HV9917  ELLIP H (02/10/07)  -17.909  (m)                       GP(2002.00)    
 HV9917  ELLIP H (08/30/02)  -17.913  (m)                       GP(       ) 4 2
 HV9917  NAD 83(1993)-  38 50 07.51004(N)    076 46 26.88087(W) AD(       ) 1
 HV9917  ELLIP H (11/14/94)  -17.925  (m)                       GP(       ) 4 2
 HV9917  ELLIP H (09/09/94)  -17.935  (m)                       GP(       ) 4 1
 HV9917  NAD 83(1991)-  38 50 07.51003(N)    076 46 26.88116(W) AD(       ) 1
 HV9917
 HV9917.Superseded values are not recommended for survey control.
 HV9917
 HV9917.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9917.See file dsdata.pdf to determine how the superseded data were derived.
 HV9917
 HV9917_MARKER: DD = SURVEY DISK
 HV9917_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9917_STAMPING: T.S. 20402 PG
 HV9917_MARK LOGO: WSSC
 HV9917_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9917_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9917+STABILITY: SURFACE MOTION
 HV9917_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9917+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9917
 HV9917  HISTORY     - Date     Condition        Report By
 HV9917  HISTORY     - 1993     MONUMENTED       MSI
 HV9917
 HV9917                          STATION DESCRIPTION
 HV9917
 HV9917'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9917'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9917'APPROXIMATELY 1.7 MI (2.7 KM) NORTHWEST OF THE TOWN OF UPPER
 HV9917'MARLBORO. TO REACH THE STATION FROM THE INTERSECTION OF LARGO ROAD
 HV9917'(S.R. 202)AND MARLBORO PIKE (S.R. 725), PROCEED SOUTHWEST ALONG MAIN
 HV9917'STREET (S.R. 725) THROUGH THE TOWN OF UPPER MARLBORO FOR 1.3 MI
 HV9917'(2.1 KM) TO THE INTERSECTION WITH BROWN STATION ROAD.  TURN RIGHT AND
 HV9917'TRAVEL NORTH ALONG BROWN STATION ROAD FOR 1.2 MI (1.9 KM) TO THE
 HV9917'INTERSECTION WITH BROOKE LANE.  TURN LEFT AND TRAVEL WEST ALONG
 HV9917'BROOKE LANE FOR 0.1 MI (0.2 KM) TO THE STATION ON THE LEFT.
 HV9917'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9917'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9917'T.S. 20402 PG.  THE DISK IS LOCATED 21.0 FT (6.4 M) SOUTH OF THE
 HV9917'CENTER LINE OF BROOKE LANE, 68.4 FT (20.8 M) SOUTHEAST OF POWER POLE
 HV9917'NO. 864365-1804, AND 78.2 FT (23.8 M) NORTHWEST OF WESTERN BRICK POST
 HV9917'OF THE FOXCHASE SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9918 ***********************************************************************
 HV9918  DESIGNATION -  20403
 HV9918  PID         -  HV9918
 HV9918  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9918  COUNTRY     -  US
 HV9918  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9918
 HV9918                         *CURRENT SURVEY CONTROL
 HV9918  ______________________________________________________________________
 HV9918* NAD 83(2011) POSITION- 38 47 12.85275(N) 076 48 02.73997(W)   ADJUSTED
 HV9918* NAD 83(2011) ELLIP HT-     7.690 (meters)        (06/27/12)   ADJUSTED
 HV9918* NAD 83(2011) EPOCH   -  2010.00
 HV9918* NAVD 88 ORTHO HEIGHT -    40.5   (meters)      133.    (feet) GPS OBS
 HV9918  ______________________________________________________________________
 HV9918  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9918  GEOID HEIGHT    -        -33.180 (meters)                     GEOID93
 HV9918  GEOID HEIGHT    -        -32.822 (meters)                     GEOID18
 HV9918  NAD 83(2011) X  -  1,136,708.877 (meters)                     COMP
 HV9918  NAD 83(2011) Y  - -4,846,672.621 (meters)                     COMP
 HV9918  NAD 83(2011) Z  -  3,973,909.587 (meters)                     COMP
 HV9918  LAPLACE CORR    -         -6.24  (seconds)                    DEFLEC18
 HV9918
 HV9918  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9918  Standards:
 HV9918         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9918            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9918  -------------------------------------------------------------------
 HV9918  NETWORK    1.02   2.21           0.42   0.41   1.13     -0.06106290
 HV9918  -------------------------------------------------------------------
 HV9918  Click here for local accuracies and other accuracy information.
 HV9918
 HV9918.The horizontal coordinates were established by GPS observations
 HV9918.and adjusted by the National Geodetic Survey in June 2012.
 HV9918
 HV9918.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9918.been affixed to the stable North American tectonic plate. See 
 HV9918.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9918
 HV9918.The horizontal coordinates are valid at the epoch date displayed above
 HV9918.which is a decimal equivalence of Year/Month/Day.
 HV9918
 HV9918.The orthometric height was determined by GPS observations and a
 HV9918.high-resolution geoid model.
 HV9918
 HV9918.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9918.GEOID18 height accuracy estimate available here.
 HV9918
 HV9918.Click photographs - Photos may exist for this station.
 HV9918
 HV9918.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9918
 HV9918.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9918
 HV9918.The ellipsoidal height was determined by GPS observations
 HV9918.and is referenced to NAD 83.
 HV9918
 HV9918. The following values were computed from the NAD 83(2011) position.
 HV9918
 HV9918;                    North         East     Units Scale Factor Converg.
 HV9918;SPC MD       -   124,369.697   417,310.139   MT  0.99995105   +0 07 30.2
 HV9918;SPC MD       -   408,036.25  1,369,125.01   sFT  0.99995105   +0 07 30.2
 HV9918;UTM  18      - 4,294,669.395   343,596.695   MT  0.99990123   -1 07 41.8
 HV9918
 HV9918!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9918!SPC MD       -   0.99999879  x   0.99995105  =   0.99994984
 HV9918!UTM  18      -   0.99999879  x   0.99990123  =   0.99990002
 HV9918
 HV9918_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4359694669(NAD 83)
 HV9918
 HV9918                          SUPERSEDED SURVEY CONTROL
 HV9918
 HV9918  NAD 83(2007)-  38 47 12.85302(N)    076 48 02.74130(W) AD(2002.00) 0
 HV9918  ELLIP H (02/10/07)    7.655  (m)                       GP(2002.00)    
 HV9918  ELLIP H (08/30/02)    7.649  (m)                       GP(       ) 4 2
 HV9918  NAD 83(1993)-  38 47 12.85305(N)    076 48 02.74145(W) AD(       ) 1
 HV9918  ELLIP H (11/14/94)    7.665  (m)                       GP(       ) 4 2
 HV9918  ELLIP H (09/09/94)    7.646  (m)                       GP(       ) 4 1
 HV9918  NAD 83(1991)-  38 47 12.85295(N)    076 48 02.74184(W) AD(       ) 1
 HV9918
 HV9918.Superseded values are not recommended for survey control.
 HV9918
 HV9918.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9918.See file dsdata.pdf to determine how the superseded data were derived.
 HV9918
 HV9918_MARKER: DD = SURVEY DISK
 HV9918_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9918_STAMPING: T.S. 20403 PG
 HV9918_MARK LOGO: WSSC
 HV9918_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9918_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9918+STABILITY: SURFACE MOTION
 HV9918_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9918+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9918
 HV9918  HISTORY     - Date     Condition        Report By
 HV9918  HISTORY     - 1993     MONUMENTED       MSI
 HV9918
 HV9918                          STATION DESCRIPTION
 HV9918
 HV9918'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9918'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9918'APPROXIMATELY 3.3 MI (5.3 KM) SOUTHWEST OF THE TOWN OF UPPER
 HV9918'MARLBORO. TO REACH THE STATION FROM THE INTERSECTION OF CROOM ROAD
 HV9918'(S.R. 382)AND CRAIN HIGHWAY (U.S. 301), PROCEED SOUTHWEST ALONG CRAIN
 HV9918'HIGHWAY FOR 0.1 MI (0.2 KM) TO THE INTERSECTION WITH OSBORNE ROAD.
 HV9918'TURN RIGHT AND TRAVEL NORTHWEST ALONG OSBORNE ROAD FOR 0.4 MI
 HV9918'(0.6 KM) TO THE STATION ON THE RIGHT.
 HV9918'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9918'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9918'T.S. 20403 PG.  THE DISK IS LOCATED 19.2 FT (5.9 M) NORTHEAST OF
 HV9918'THE CENTER LINE OF OSBORNE ROAD, 40.7 FT (12.4 M) NORTHWEST OF A
 HV9918'W.S.S.C. WATER METER CAP AND 52.2 FT (15.9 M) NORTHWEST OF THE MIDDLE
 HV9918'OF THE NORTHWEST END OF A BRICK PILLAR ON THE NORTHWEST SIDE OF THE
 HV9918'DRIVEWAY TO HOUSE NO. 7410.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9919 ***********************************************************************
 HV9919  DESIGNATION -  20404
 HV9919  PID         -  HV9919
 HV9919  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9919  COUNTRY     -  US
 HV9919  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9919
 HV9919                         *CURRENT SURVEY CONTROL
 HV9919  ______________________________________________________________________
 HV9919* NAD 83(2011) POSITION- 38 49 34.03393(N) 076 47 41.06340(W)   ADJUSTED
 HV9919* NAD 83(2011) ELLIP HT-    15.012 (meters)        (06/27/12)   ADJUSTED
 HV9919* NAD 83(2011) EPOCH   -  2010.00
 HV9919* NAVD 88 ORTHO HEIGHT -    47.7   (meters)      156.    (feet) GPS OBS
 HV9919  ______________________________________________________________________
 HV9919  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9919  GEOID HEIGHT    -        -33.120 (meters)                     GEOID93
 HV9919  GEOID HEIGHT    -        -32.759 (meters)                     GEOID18
 HV9919  NAD 83(2011) X  -  1,136,596.253 (meters)                     COMP
 HV9919  NAD 83(2011) Y  - -4,843,902.493 (meters)                     COMP
 HV9919  NAD 83(2011) Z  -  3,977,306.758 (meters)                     COMP
 HV9919  LAPLACE CORR    -         -6.28  (seconds)                    DEFLEC18
 HV9919
 HV9919  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9919  Standards:
 HV9919         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9919            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9919  -------------------------------------------------------------------
 HV9919  NETWORK    1.04   2.31           0.43   0.42   1.18     -0.03773365
 HV9919  -------------------------------------------------------------------
 HV9919  Click here for local accuracies and other accuracy information.
 HV9919
 HV9919.The horizontal coordinates were established by GPS observations
 HV9919.and adjusted by the National Geodetic Survey in June 2012.
 HV9919
 HV9919.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9919.been affixed to the stable North American tectonic plate. See 
 HV9919.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9919
 HV9919.The horizontal coordinates are valid at the epoch date displayed above
 HV9919.which is a decimal equivalence of Year/Month/Day.
 HV9919
 HV9919.The orthometric height was determined by GPS observations and a
 HV9919.high-resolution geoid model.
 HV9919
 HV9919.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9919.GEOID18 height accuracy estimate available here.
 HV9919
 HV9919.Click photographs - Photos may exist for this station.
 HV9919
 HV9919.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9919
 HV9919.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9919
 HV9919.The ellipsoidal height was determined by GPS observations
 HV9919.and is referenced to NAD 83.
 HV9919
 HV9919. The following values were computed from the NAD 83(2011) position.
 HV9919
 HV9919;                    North         East     Units Scale Factor Converg.
 HV9919;SPC MD       -   128,724.179   417,823.485   MT  0.99995022   +0 07 43.8
 HV9919;SPC MD       -   422,322.58  1,370,809.22   sFT  0.99995022   +0 07 43.8
 HV9919;UTM  18      - 4,299,011.382   344,205.169   MT  0.99989889   -1 07 31.6
 HV9919
 HV9919!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9919!SPC MD       -   0.99999764  x   0.99995022  =   0.99994786
 HV9919!UTM  18      -   0.99999764  x   0.99989889  =   0.99989653
 HV9919
 HV9919_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4420599011(NAD 83)
 HV9919
 HV9919                          SUPERSEDED SURVEY CONTROL
 HV9919
 HV9919  NAD 83(2007)-  38 49 34.03427(N)    076 47 41.06450(W) AD(2002.00) 0
 HV9919  ELLIP H (02/10/07)   15.002  (m)                       GP(2002.00)    
 HV9919  ELLIP H (08/30/02)   14.996  (m)                       GP(       ) 4 2
 HV9919  NAD 83(1993)-  38 49 34.03451(N)    076 47 41.06474(W) AD(       ) 1
 HV9919  ELLIP H (11/14/94)   14.992  (m)                       GP(       ) 4 2
 HV9919  ELLIP H (09/09/94)   14.978  (m)                       GP(       ) 4 1
 HV9919  NAD 83(1991)-  38 49 34.03455(N)    076 47 41.06512(W) AD(       ) 1
 HV9919
 HV9919.Superseded values are not recommended for survey control.
 HV9919
 HV9919.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9919.See file dsdata.pdf to determine how the superseded data were derived.
 HV9919
 HV9919_MARKER: DD = SURVEY DISK
 HV9919_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9919_STAMPING: T.S. 20404 PG
 HV9919_MARK LOGO: WSSC
 HV9919_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9919_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9919+STABILITY: SURFACE MOTION
 HV9919_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9919+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9919
 HV9919  HISTORY     - Date     Condition        Report By
 HV9919  HISTORY     - 1993     MONUMENTED       MSI
 HV9919
 HV9919                          STATION DESCRIPTION
 HV9919
 HV9919'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9919'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9919'APPROXIMATELY 2.3 MI (3.7 KM) WEST OF THE TOWN OF UPPER MARLBORO.  TO
 HV9919'REACH THE STATION FROM THE INTERSECTION OF OLD MARLBORO PIKE AND
 HV9919'RITCHIE MARLBORO ROAD, PROCEED NORTHWEST ALONG RITCHIE MARLBORO ROAD
 HV9919'FOR 1.2 MI (1.9 KM) TO THE STATION ON THE LEFT.
 HV9919'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9919'MONUMENT, APPROXIMATELY 0.08 M (0.26 FT) ABOVE THE GROUND SURFACE,
 HV9919'AND STAMPED T.S. 20404 PG.  THE DISK IS LOCATED 17.5 FT (5.3 M)
 HV9919'SOUTHWEST OF THE CENTER LINE OF RITCHIE MARLBORO ROAD, 28.2 FT
 HV9919'(8.6 M) SOUTHEAST OF TELEPHONE POLE NO. CP MD 23, AND 35.8 FT
 HV9919'(10.9 M) NORTH OF PEPCO POWER POLE NO. 3949.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9920 ***********************************************************************
 HV9920  DESIGNATION -  20405
 HV9920  PID         -  HV9920
 HV9920  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9920  COUNTRY     -  US
 HV9920  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9920
 HV9920                         *CURRENT SURVEY CONTROL
 HV9920  ______________________________________________________________________
 HV9920* NAD 83(2011) POSITION- 38 48 55.25904(N) 076 49 27.03881(W)   ADJUSTED
 HV9920* NAD 83(2011) ELLIP HT-    27.224 (meters)        (06/27/12)   ADJUSTED
 HV9920* NAD 83(2011) EPOCH   -  2010.00
 HV9920* NAVD 88 ORTHO HEIGHT -    59.860 (meters)      196.39  (feet) ADJUSTED
 HV9920  ______________________________________________________________________
 HV9920  GEOID HEIGHT    -        -32.685 (meters)                     GEOID18
 HV9920  NAD 83(2011) X  -  1,134,280.411 (meters)                     COMP
 HV9920  NAD 83(2011) Y  - -4,845,224.913 (meters)                     COMP
 HV9920  NAD 83(2011) Z  -  3,976,382.835 (meters)                     COMP
 HV9920  LAPLACE CORR    -         -6.09  (seconds)                    DEFLEC18
 HV9920  DYNAMIC HEIGHT  -         59.827 (meters)      196.28  (feet) COMP
 HV9920  MODELED GRAVITY -    980,070.3   (mgal)                       NAVD 88
 HV9920
 HV9920  VERT ORDER      -  FIRST     CLASS II
 HV9920
 HV9920  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9920  Standards:
 HV9920         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9920            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9920  -------------------------------------------------------------------
 HV9920  NETWORK    1.02   2.27           0.41   0.42   1.16      0.06612495
 HV9920  -------------------------------------------------------------------
 HV9920  Click here for local accuracies and other accuracy information.
 HV9920
 HV9920.The horizontal coordinates were established by GPS observations
 HV9920.and adjusted by the National Geodetic Survey in June 2012.
 HV9920
 HV9920.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9920.been affixed to the stable North American tectonic plate. See 
 HV9920.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9920
 HV9920.The horizontal coordinates are valid at the epoch date displayed above
 HV9920.which is a decimal equivalence of Year/Month/Day.
 HV9920
 HV9920.The orthometric height was determined by differential leveling and
 HV9920.adjusted by the NATIONAL GEODETIC SURVEY
 HV9920.in August 2020.
 HV9920
 HV9920.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9920.GEOID18 height accuracy estimate available here.
 HV9920
 HV9920.Click photographs - Photos may exist for this station.
 HV9920
 HV9920.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9920
 HV9920.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9920
 HV9920.The ellipsoidal height was determined by GPS observations
 HV9920.and is referenced to NAD 83.
 HV9920
 HV9920.The dynamic height is computed by dividing the NAVD 88
 HV9920.geopotential number by the normal gravity value computed on the
 HV9920.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9920.degrees latitude (g = 980.6199 gals.).
 HV9920
 HV9920.The modeled gravity was interpolated from observed gravity values.
 HV9920
 HV9920. The following values were computed from the NAD 83(2011) position.
 HV9920
 HV9920;                    North         East     Units Scale Factor Converg.
 HV9920;SPC MD       -   127,523.216   415,269.617   MT  0.99995040   +0 06 37.3
 HV9920;SPC MD       -   418,382.42  1,362,430.40   sFT  0.99995040   +0 06 37.3
 HV9920;UTM  18      - 4,297,866.657   341,625.747   MT  0.99990887   -1 08 37.2
 HV9920
 HV9920!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9920!SPC MD       -   0.99999573  x   0.99995040  =   0.99994613
 HV9920!UTM  18      -   0.99999573  x   0.99990887  =   0.99990460
 HV9920
 HV9920_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4162597866(NAD 83)
 HV9920
 HV9920                          SUPERSEDED SURVEY CONTROL
 HV9920
 HV9920  NAD 83(2007)-  38 48 55.25933(N)    076 49 27.03992(W) AD(2002.00) 0
 HV9920  ELLIP H (02/10/07)   27.210  (m)                       GP(2002.00)    
 HV9920  ELLIP H (08/30/02)   27.202  (m)                       GP(       ) 4 2
 HV9920  NAD 83(1993)-  38 48 55.25956(N)    076 49 27.04026(W) AD(       ) 1
 HV9920  ELLIP H (11/14/94)   27.212  (m)                       GP(       ) 4 2
 HV9920  ELLIP H (09/09/94)   27.195  (m)                       GP(       ) 4 1
 HV9920  NAD 83(1991)-  38 48 55.25954(N)    076 49 27.04066(W) AD(       ) 1
 HV9920  NAVD 88 (01/27/94)   59.9    (m)  GEOID93  model used  GPS OBS        
 HV9920
 HV9920.Superseded values are not recommended for survey control.
 HV9920
 HV9920.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9920.See file dsdata.pdf to determine how the superseded data were derived.
 HV9920
 HV9920_MARKER: DD = SURVEY DISK
 HV9920_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9920_STAMPING: 20405 PG
 HV9920_MARK LOGO: WSSC
 HV9920_PROJECTION: FLUSH
 HV9920_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9920_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9920+STABILITY: SURFACE MOTION
 HV9920_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9920+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 HV9920
 HV9920  HISTORY     - Date     Condition        Report By
 HV9920  HISTORY     - 1993     MONUMENTED       MSI
 HV9920  HISTORY     - 20191028 GOOD             MDSHA
 HV9920
 HV9920                          STATION DESCRIPTION
 HV9920
 HV9920'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9920'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9920'APPROXIMATELY 3.7 MI (6.0 KM) WEST OF THE TOWN OF UPPER MARLBORO.  TO
 HV9920'REACH THE STATION FROM THE INTERSECTION OF WOODYARD ROAD (S.R. 223)
 HV9920'AND PENNSYLVANIA AVENUE (S.R. 4), PROCEED NORTH ON WOODYARD ROAD FOR
 HV9920'0.1 MI (0.2 KM) TO THE INTERSECTION WITH OLD MARLBORO PIKE. TURN
 HV9920'RIGHT AND TRAVEL EAST ON OLD MARLBORO PIKE FOR APPROXIMATELY 150 FT
 HV9920'(45.7 M) TO THE STATION ON THE RIGHT IN MEDIAN.
 HV9920'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9920'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9920'T.S. 20405 PG.  THE DISK IS LOCATED 24.5 FT (7.5 M) NORTH OF THE
 HV9920'OFF RAMP FOR PENNSYLVANIA AVENUE (EDGE OF PAVEMENT), 34.0 FT
 HV9920'(10.4 M) SOUTH OF OLD MARLBORO PIKE (EDGE OF PAVEMENT), AND 82.2 FT
 HV9920'(25.1 M) SOUTH WEST OF THE LITTERING UNLAWFULL SIGN.
 HV9920
 HV9920                          STATION RECOVERY (2019)
 HV9920
 HV9920'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 HV9920'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9921 ***********************************************************************
 HV9921  DESIGNATION -  20406
 HV9921  PID         -  HV9921
 HV9921  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9921  COUNTRY     -  US
 HV9921  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9921
 HV9921                         *CURRENT SURVEY CONTROL
 HV9921  ______________________________________________________________________
 HV9921* NAD 83(2011) POSITION- 38 46 53.22659(N) 076 51 09.30275(W)   ADJUSTED
 HV9921* NAD 83(2011) ELLIP HT-    41.729 (meters)        (06/27/12)   ADJUSTED
 HV9921* NAD 83(2011) EPOCH   -  2010.00
 HV9921* NAVD 88 ORTHO HEIGHT -    74.4   (meters)      244.    (feet) GPS OBS
 HV9921  ______________________________________________________________________
 HV9921  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9921  GEOID HEIGHT    -        -33.030 (meters)                     GEOID93
 HV9921  GEOID HEIGHT    -        -32.670 (meters)                     GEOID18
 HV9921  NAD 83(2011) X  -  1,132,416.948 (meters)                     COMP
 HV9921  NAD 83(2011) Y  - -4,848,093.765 (meters)                     COMP
 HV9921  NAD 83(2011) Z  -  3,973,459.146 (meters)                     COMP
 HV9921  LAPLACE CORR    -         -5.81  (seconds)                    DEFLEC18
 HV9921
 HV9921  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9921  Standards:
 HV9921         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9921            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9921  -------------------------------------------------------------------
 HV9921  NETWORK    1.08   2.33           0.47   0.41   1.19      0.03120482
 HV9921  -------------------------------------------------------------------
 HV9921  Click here for local accuracies and other accuracy information.
 HV9921
 HV9921.The horizontal coordinates were established by GPS observations
 HV9921.and adjusted by the National Geodetic Survey in June 2012.
 HV9921
 HV9921.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9921.been affixed to the stable North American tectonic plate. See 
 HV9921.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9921
 HV9921.The horizontal coordinates are valid at the epoch date displayed above
 HV9921.which is a decimal equivalence of Year/Month/Day.
 HV9921
 HV9921.The orthometric height was determined by GPS observations and a
 HV9921.high-resolution geoid model.
 HV9921
 HV9921.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9921.GEOID18 height accuracy estimate available here.
 HV9921
 HV9921.Click photographs - Photos may exist for this station.
 HV9921
 HV9921.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9921
 HV9921.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9921
 HV9921.The ellipsoidal height was determined by GPS observations
 HV9921.and is referenced to NAD 83.
 HV9921
 HV9921. The following values were computed from the NAD 83(2011) position.
 HV9921
 HV9921;                    North         East     Units Scale Factor Converg.
 HV9921;SPC MD       -   123,755.977   412,808.670   MT  0.99995120   +0 05 33.1
 HV9921;SPC MD       -   406,022.73  1,354,356.44   sFT  0.99995120   +0 05 33.1
 HV9921;UTM  18      - 4,294,154.296   339,083.066   MT  0.99991887   -1 09 38.2
 HV9921
 HV9921!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9921!SPC MD       -   0.99999345  x   0.99995120  =   0.99994465
 HV9921!UTM  18      -   0.99999345  x   0.99991887  =   0.99991232
 HV9921
 HV9921_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3908394154(NAD 83)
 HV9921
 HV9921                          SUPERSEDED SURVEY CONTROL
 HV9921
 HV9921  NAD 83(2007)-  38 46 53.22688(N)    076 51 09.30410(W) AD(2002.00) 0
 HV9921  ELLIP H (02/10/07)   41.702  (m)                       GP(2002.00)    
 HV9921  ELLIP H (08/30/02)   41.695  (m)                       GP(       ) 4 2
 HV9921  NAD 83(1993)-  38 46 53.22689(N)    076 51 09.30432(W) AD(       ) 1
 HV9921  ELLIP H (11/14/94)   41.715  (m)                       GP(       ) 4 2
 HV9921  ELLIP H (09/09/94)   41.698  (m)                       GP(       ) 4 1
 HV9921  NAD 83(1991)-  38 46 53.22678(N)    076 51 09.30474(W) AD(       ) 1
 HV9921
 HV9921.Superseded values are not recommended for survey control.
 HV9921
 HV9921.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9921.See file dsdata.pdf to determine how the superseded data were derived.
 HV9921
 HV9921_MARKER: DD = SURVEY DISK
 HV9921_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9921_STAMPING: T.S. 20406 PG
 HV9921_MARK LOGO: WSSC
 HV9921_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9921_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9921+STABILITY: SURFACE MOTION
 HV9921_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9921+SATELLITE: SATELLITE OBSERVATIONS - March 26, 2003
 HV9921
 HV9921  HISTORY     - Date     Condition        Report By
 HV9921  HISTORY     - 1993     MONUMENTED       MSI
 HV9921  HISTORY     - 20030326 GOOD             DMW
 HV9921
 HV9921                          STATION DESCRIPTION
 HV9921
 HV9921'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9921'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9921'APPROXIMATELY 5.6 MI (9.0 KM) SOUTHWEST OF THE TOWN OF UPPER
 HV9921'MARLBORO. TO REACH THE STATION FROM THE INTERSECTION OF PENNSYLVANIA
 HV9921'AVENUE (S.R. 4) AND WOODYARD ROAD (S.R. 223), PROCEED SOUTH ALONG
 HV9921'WOODYARD ROAD FOR 2.4 MI (3.9 KM) TO THE INTERESCTION WITH
 HV9921'ROSARYVILLE ROAD. CONTINUE ALONG WOODYARD ROAD FOR 0.6 MI (1.0 KM) TO
 HV9921'THE STATION ON THE LEFT.
 HV9921'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9921'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9921'T.S. 20406 PG.  THE DISK IS LOCATED 18.0 FT (5.5 M) SOUTHEAST OF
 HV9921'THE CENTER LINE OF WOODYARD ROAD, 85.6 FT (26.1 M) SOUTHWEST OF POWER
 HV9921'POLE NO. 841345-0031, AND 72.1 FT (22.0 M) NORTHEAST OF MAILBOX NO.
 HV9921'7900.
 HV9921
 HV9921                          STATION RECOVERY (2003)
 HV9921
 HV9921'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (DMM)
 HV9921'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7160 ***********************************************************************
 JV7160  DESIGNATION -  20407
 JV7160  PID         -  JV7160
 JV7160  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7160  COUNTRY     -  US
 JV7160  USGS QUAD   -  LAUREL (2016)
 JV7160
 JV7160                         *CURRENT SURVEY CONTROL
 JV7160  ______________________________________________________________________
 JV7160* NAD 83(2011) POSITION- 39 04 50.18544(N) 076 51 20.22373(W)   ADJUSTED
 JV7160* NAD 83(2011) ELLIP HT-    24.261 (meters)        (06/27/12)   ADJUSTED
 JV7160* NAD 83(2011) EPOCH   -  2010.00
 JV7160* NAVD 88 ORTHO HEIGHT -    56.5   (meters)      185.    (feet) GPS OBS
 JV7160  ______________________________________________________________________
 JV7160  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7160  GEOID HEIGHT    -        -32.610 (meters)                     GEOID93
 JV7160  GEOID HEIGHT    -        -32.247 (meters)                     GEOID18
 JV7160  NAD 83(2011) X  -  1,127,411.431 (meters)                     COMP
 JV7160  NAD 83(2011) Y  - -4,827,818.223 (meters)                     COMP
 JV7160  NAD 83(2011) Z  -  3,999,282.795 (meters)                     COMP
 JV7160  LAPLACE CORR    -         -4.99  (seconds)                    DEFLEC18
 JV7160
 JV7160  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7160  Standards:
 JV7160         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7160            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7160  -------------------------------------------------------------------
 JV7160  NETWORK    1.14   2.35           0.48   0.45   1.20      0.04393767
 JV7160  -------------------------------------------------------------------
 JV7160  Click here for local accuracies and other accuracy information.
 JV7160
 JV7160.The horizontal coordinates were established by GPS observations
 JV7160.and adjusted by the National Geodetic Survey in June 2012.
 JV7160
 JV7160.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7160.been affixed to the stable North American tectonic plate. See 
 JV7160.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7160
 JV7160.The horizontal coordinates are valid at the epoch date displayed above
 JV7160.which is a decimal equivalence of Year/Month/Day.
 JV7160
 JV7160.The orthometric height was determined by GPS observations and a
 JV7160.high-resolution geoid model.
 JV7160
 JV7160.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7160.GEOID18 height accuracy estimate available here.
 JV7160
 JV7160.Click photographs - Photos may exist for this station.
 JV7160
 JV7160.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7160
 JV7160.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7160
 JV7160.The ellipsoidal height was determined by GPS observations
 JV7160.and is referenced to NAD 83.
 JV7160
 JV7160. The following values were computed from the NAD 83(2011) position.
 JV7160
 JV7160;                    North         East     Units Scale Factor Converg.
 JV7160;SPC MD       -   156,964.370   412,492.563   MT  0.99995622   +0 05 26.2
 JV7160;SPC MD       -   514,973.94  1,353,319.35   sFT  0.99995622   +0 05 26.2
 JV7160;UTM  18      - 4,327,360.524   339,495.462   MT  0.99991722   -1 10 12.2
 JV7160
 JV7160!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7160!SPC MD       -   0.99999619  x   0.99995622  =   0.99995241
 JV7160!UTM  18      -   0.99999619  x   0.99991722  =   0.99991341
 JV7160
 JV7160_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3949527360(NAD 83)
 JV7160
 JV7160                          SUPERSEDED SURVEY CONTROL
 JV7160
 JV7160  NAD 83(2007)-  39 04 50.18564(N)    076 51 20.22447(W) AD(2002.00) 0
 JV7160  ELLIP H (02/10/07)   24.283  (m)                       GP(2002.00)    
 JV7160  ELLIP H (08/30/02)   24.299  (m)                       GP(       ) 4 2
 JV7160  ELLIP H (09/09/94)   24.215  (m)                       GP(       ) 4 1
 JV7160  NAD 83(1991)-  39 04 50.18546(N)    076 51 20.22445(W) AD(       ) 1
 JV7160
 JV7160.Superseded values are not recommended for survey control.
 JV7160
 JV7160.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7160.See file dsdata.pdf to determine how the superseded data were derived.
 JV7160
 JV7160_MARKER: DD = SURVEY DISK
 JV7160_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7160_STAMPING: T.S. 20407 PG
 JV7160_MARK LOGO: WSSC
 JV7160_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7160_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7160+STABILITY: SURFACE MOTION
 JV7160_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7160+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7160
 JV7160  HISTORY     - Date     Condition        Report By
 JV7160  HISTORY     - 1993     MONUMENTED       MSI
 JV7160
 JV7160                          STATION DESCRIPTION
 JV7160
 JV7160'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7160'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7160'APPROXIMATELY 1.4 MI (2.3 KM) SOUTH OF THE TOWN OF LAUREL.  TO REACH
 JV7160'THE STATION FROM THE INTERSECTION OF LAUREL BOWIE ROAD (S.R. 197) AND
 JV7160'LAUREL FORT MEADE ROAD (S.R. 198), PROCEED SOUTH ALONG LAUREL BOWIE
 JV7160'ROAD FOR 1.1 MI (1.8 KM) TO THE INTERSECTION WITH BRIARWOOD DRIVE.
 JV7160'TURN RIGHT AND TRAVEL WEST ON BRIARWOOD DRIVE FOR 0.4 MI (0.6 KM) TO
 JV7160'THE STATION ON THE LEFT.
 JV7160'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7160'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7160'T.S. 20407 PG.  THE DISK IS LOCATED 38.5 FT (11.7 M) SOUTH OF THE
 JV7160'CENTER LINE OF BRIARWOOD DRIVE, 25.0 FT (7.6 M) WEST OF DWIGHT D.
 JV7160'EISENHOWER SCHOOL SIGN, AND 30.2 FT (9.2 M) SOUTHWEST OF A MANHOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9922 ***********************************************************************
 HV9922  DESIGNATION -  20408
 HV9922  PID         -  HV9922
 HV9922  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9922  COUNTRY     -  US
 HV9922  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9922
 HV9922                         *CURRENT SURVEY CONTROL
 HV9922  ______________________________________________________________________
 HV9922* NAD 83(2011) POSITION- 38 51 30.80705(N) 076 51 17.44659(W)   ADJUSTED
 HV9922* NAD 83(2011) ELLIP HT-    50.863 (meters)        (06/27/12)   ADJUSTED
 HV9922* NAD 83(2011) EPOCH   -  2010.00
 HV9922* NAVD 88 ORTHO HEIGHT -    83.4   (meters)      274.    (feet) GPS OBS
 HV9922  ______________________________________________________________________
 HV9922  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9922  GEOID HEIGHT    -        -32.880 (meters)                     GEOID93
 HV9922  GEOID HEIGHT    -        -32.517 (meters)                     GEOID18
 HV9922  NAD 83(2011) X  -  1,131,006.848 (meters)                     COMP
 HV9922  NAD 83(2011) Y  - -4,842,920.121 (meters)                     COMP
 HV9922  NAD 83(2011) Z  -  3,980,133.914 (meters)                     COMP
 HV9922  LAPLACE CORR    -         -5.31  (seconds)                    DEFLEC18
 HV9922
 HV9922  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9922  Standards:
 HV9922         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9922            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9922  -------------------------------------------------------------------
 HV9922  NETWORK    0.80   1.67           0.35   0.30   0.85      0.01520130
 HV9922  -------------------------------------------------------------------
 HV9922  Click here for local accuracies and other accuracy information.
 HV9922
 HV9922.The horizontal coordinates were established by GPS observations
 HV9922.and adjusted by the National Geodetic Survey in June 2012.
 HV9922
 HV9922.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9922.been affixed to the stable North American tectonic plate. See 
 HV9922.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9922
 HV9922.The horizontal coordinates are valid at the epoch date displayed above
 HV9922.which is a decimal equivalence of Year/Month/Day.
 HV9922
 HV9922.The orthometric height was determined by GPS observations and a
 HV9922.high-resolution geoid model.
 HV9922
 HV9922.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9922.GEOID18 height accuracy estimate available here.
 HV9922
 HV9922.Click photographs - Photos may exist for this station.
 HV9922
 HV9922.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9922
 HV9922.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9922
 HV9922.The ellipsoidal height was determined by GPS observations
 HV9922.and is referenced to NAD 83.
 HV9922
 HV9922. The following values were computed from the NAD 83(2011) position.
 HV9922
 HV9922;                    North         East     Units Scale Factor Converg.
 HV9922;SPC MD       -   132,314.886   412,598.505   MT  0.99994989   +0 05 28.0
 HV9922;SPC MD       -   434,103.09  1,353,666.93   sFT  0.99994989   +0 05 28.0
 HV9922;UTM  18      - 4,302,715.485   339,060.277   MT  0.99991896   -1 09 50.3
 HV9922
 HV9922!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9922!SPC MD       -   0.99999202  x   0.99994989  =   0.99994191
 HV9922!UTM  18      -   0.99999202  x   0.99991896  =   0.99991098
 HV9922
 HV9922_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3906002715(NAD 83)
 HV9922
 HV9922                          SUPERSEDED SURVEY CONTROL
 HV9922
 HV9922  NAD 83(2007)-  38 51 30.80743(N)    076 51 17.44740(W) AD(2002.00) 0
 HV9922  ELLIP H (02/10/07)   50.876  (m)                       GP(2002.00)    
 HV9922  ELLIP H (08/30/02)   50.861  (m)                       GP(       ) 4 2
 HV9922  ELLIP H (09/09/94)   50.853  (m)                       GP(       ) 4 1
 HV9922  NAD 83(1991)-  38 51 30.80806(N)    076 51 17.44790(W) AD(       ) 1
 HV9922
 HV9922.Superseded values are not recommended for survey control.
 HV9922
 HV9922.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9922.See file dsdata.pdf to determine how the superseded data were derived.
 HV9922
 HV9922_MARKER: DD = SURVEY DISK
 HV9922_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9922_STAMPING: T.S. 20408 PG
 HV9922_MARK LOGO: WSSC
 HV9922_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9922_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9922+STABILITY: SURFACE MOTION
 HV9922_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9922+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9922
 HV9922  HISTORY     - Date     Condition        Report By
 HV9922  HISTORY     - 1993     MONUMENTED       MSI
 HV9922
 HV9922                          STATION DESCRIPTION
 HV9922
 HV9922'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9922'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9922'APPROXIMATELY 0.9 MI (1.4 KM) NORTHEAST OF THE TOWN OF FORESTVILLE.
 HV9922'TO REACH THE STATION FROM THE INTERSECTION OF CENTRAL AVENUE (S.R.
 HV9922'214)AND RITCHIE ROAD, PROCEED SOUTH ALONG RITCHIE ROAD FOR 2.5 MI
 HV9922'(4.0 KM) TO THE INTERSECTION WITH DARCY ROAD.  TURN LEFT AND TRAVEL
 HV9922'EAST ALONG DARCY ROAD FOR 0.9 MI (1.4 KM) TO THE INTERSECTION WITH
 HV9922'HAMPTON PARK BLVD, AND THE STATION ON THE RIGHT.
 HV9922'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9922'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9922'T.S. 20408 PG.  THE DISK IS LOCATED 50.6 FT (15.4 M) SOUTHWEST OF
 HV9922'THE CENTER LINE OF DARCY ROAD, 25.7 FT (7.8 M) NORTH OF A LIGHT
 HV9922'POLE, AND 43.7 FT (13.3 M) NORTHWEST OF THE CENTER LINE OF HAMPTON
 HV9922'PARK ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9923 ***********************************************************************
 HV9923  DESIGNATION -  20409
 HV9923  PID         -  HV9923
 HV9923  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9923  COUNTRY     -  US
 HV9923  USGS QUAD   -  LANHAM (2016)
 HV9923
 HV9923                         *CURRENT SURVEY CONTROL
 HV9923  ______________________________________________________________________
 HV9923* NAD 83(2011) POSITION- 38 54 02.97956(N) 076 46 07.31905(W)   ADJUSTED
 HV9923* NAD 83(2011) ELLIP HT-     4.444 (meters)        (06/27/12)   ADJUSTED
 HV9923* NAD 83(2011) EPOCH   -  2010.00
 HV9923* NAVD 88 ORTHO HEIGHT -    37.1   (meters)      122.    (feet) GPS OBS
 HV9923  ______________________________________________________________________
 HV9923  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9923  GEOID HEIGHT    -        -33.060 (meters)                     GEOID93
 HV9923  GEOID HEIGHT    -        -32.705 (meters)                     GEOID18
 HV9923  NAD 83(2011) X  -  1,137,604.658 (meters)                     COMP
 HV9923  NAD 83(2011) Y  - -4,838,311.685 (meters)                     COMP
 HV9923  NAD 83(2011) Z  -  3,983,757.777 (meters)                     COMP
 HV9923  LAPLACE CORR    -         -5.74  (seconds)                    DEFLEC18
 HV9923
 HV9923  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9923  Standards:
 HV9923         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9923            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9923  -------------------------------------------------------------------
 HV9923  NETWORK    0.97   2.04           0.40   0.39   1.04      0.04601549
 HV9923  -------------------------------------------------------------------
 HV9923  Click here for local accuracies and other accuracy information.
 HV9923
 HV9923.The horizontal coordinates were established by GPS observations
 HV9923.and adjusted by the National Geodetic Survey in June 2012.
 HV9923
 HV9923.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9923.been affixed to the stable North American tectonic plate. See 
 HV9923.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9923
 HV9923.The horizontal coordinates are valid at the epoch date displayed above
 HV9923.which is a decimal equivalence of Year/Month/Day.
 HV9923
 HV9923.The orthometric height was determined by GPS observations and a
 HV9923.high-resolution geoid model.
 HV9923
 HV9923.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9923.GEOID18 height accuracy estimate available here.
 HV9923
 HV9923.Click photographs - Photos may exist for this station.
 HV9923
 HV9923.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9923
 HV9923.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9923
 HV9923.The ellipsoidal height was determined by GPS observations
 HV9923.and is referenced to NAD 83.
 HV9923
 HV9923. The following values were computed from the NAD 83(2011) position.
 HV9923
 HV9923;                    North         East     Units Scale Factor Converg.
 HV9923;SPC MD       -   137,022.596   420,063.625   MT  0.99994994   +0 08 42.6
 HV9923;SPC MD       -   449,548.30  1,378,158.74   sFT  0.99994994   +0 08 42.6
 HV9923;UTM  18      - 4,307,258.278   346,626.417   MT  0.99988967   -1 06 39.3
 HV9923
 HV9923!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9923!SPC MD       -   0.99999930  x   0.99994994  =   0.99994924
 HV9923!UTM  18      -   0.99999930  x   0.99988967  =   0.99988897
 HV9923
 HV9923_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4662607258(NAD 83)
 HV9923
 HV9923                          SUPERSEDED SURVEY CONTROL
 HV9923
 HV9923  NAD 83(2007)-  38 54 02.97990(N)    076 46 07.31990(W) AD(2002.00) 0
 HV9923  ELLIP H (02/10/07)    4.458  (m)                       GP(2002.00)    
 HV9923  ELLIP H (08/30/02)    4.455  (m)                       GP(       ) 4 2
 HV9923  ELLIP H (09/09/94)    4.410  (m)                       GP(       ) 4 1
 HV9923  NAD 83(1991)-  38 54 02.98000(N)    076 46 07.32004(W) AD(       ) 1
 HV9923
 HV9923.Superseded values are not recommended for survey control.
 HV9923
 HV9923.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9923.See file dsdata.pdf to determine how the superseded data were derived.
 HV9923
 HV9923_MARKER: DD = SURVEY DISK
 HV9923_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9923_STAMPING: T.S. 20409 PG
 HV9923_MARK LOGO: WSSC
 HV9923_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9923_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9923+STABILITY: SURFACE MOTION
 HV9923_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9923+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9923
 HV9923  HISTORY     - Date     Condition        Report By
 HV9923  HISTORY     - 1993     MONUMENTED       MSI
 HV9923
 HV9923                          STATION DESCRIPTION
 HV9923
 HV9923'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9923'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9923'APPROXIMATELY 2.1 MI (3.4 KM) SOUTHWEST OF THE TOWN OF BOWIE. TO
 HV9923'REACH THE STATION FROM THE INTERSECTION OF CHURCH ROAD SOUTH AND
 HV9923'CENTRAL AVENUE (S.R.214), PROCEED WEST ALONG CENTRAL AVENUE FOR 0.55
 HV9923'MI (0.89 KM) TO THE STATION ON THE LEFT.
 HV9923'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9923'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9923'T.S. 20409 PG.  THE DISK IS LOCATED 168.6 FT (51.4 M) SOUTH FROM
 HV9923'THE CENTERLINE OF CENTRAL AVENUE, 98.0 FT (29.9 M) EAST FROM THE
 HV9923'NORTH END OF THE POND( WHERE POND AND DITCH MEET), AND 164.0 FT
 HV9923'(50.0 M) NORTHEAST FROM THE SOUTH END OF POND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9924 ***********************************************************************
 HV9924  DESIGNATION -  20410
 HV9924  PID         -  HV9924
 HV9924  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9924  COUNTRY     -  US
 HV9924  USGS QUAD   -  PISCATAWAY (2016)
 HV9924
 HV9924                         *CURRENT SURVEY CONTROL
 HV9924  ______________________________________________________________________
 HV9924* NAD 83(2011) POSITION- 38 41 50.19535(N) 076 59 11.33529(W)   ADJUSTED
 HV9924* NAD 83(2011) ELLIP HT-   -26.738 (meters)        (06/27/12)   ADJUSTED
 HV9924* NAD 83(2011) EPOCH   -  2010.00
 HV9924* NAVD 88 ORTHO HEIGHT -     5.8   (meters)       19.    (feet) GPS OBS
 HV9924  ______________________________________________________________________
 HV9924  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9924  GEOID HEIGHT    -        -32.910 (meters)                     GEOID93
 HV9924  GEOID HEIGHT    -        -32.536 (meters)                     GEOID18
 HV9924  NAD 83(2011) X  -  1,122,388.786 (meters)                     COMP
 HV9924  NAD 83(2011) Y  - -4,856,372.223 (meters)                     COMP
 HV9924  NAD 83(2011) Z  -  3,966,127.695 (meters)                     COMP
 HV9924  LAPLACE CORR    -         -3.80  (seconds)                    DEFLEC18
 HV9924
 HV9924  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9924  Standards:
 HV9924         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9924            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9924  -------------------------------------------------------------------
 HV9924  NETWORK    1.27   3.19           0.53   0.51   1.63     -0.01845063
 HV9924  -------------------------------------------------------------------
 HV9924  Click here for local accuracies and other accuracy information.
 HV9924
 HV9924.The horizontal coordinates were established by GPS observations
 HV9924.and adjusted by the National Geodetic Survey in June 2012.
 HV9924
 HV9924.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9924.been affixed to the stable North American tectonic plate. See 
 HV9924.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9924
 HV9924.The horizontal coordinates are valid at the epoch date displayed above
 HV9924.which is a decimal equivalence of Year/Month/Day.
 HV9924
 HV9924.The orthometric height was determined by GPS observations and a
 HV9924.high-resolution geoid model.
 HV9924
 HV9924.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9924.GEOID18 height accuracy estimate available here.
 HV9924
 HV9924.Click photographs - Photos may exist for this station.
 HV9924
 HV9924.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9924
 HV9924.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9924
 HV9924.The ellipsoidal height was determined by GPS observations
 HV9924.and is referenced to NAD 83.
 HV9924
 HV9924. The following values were computed from the NAD 83(2011) position.
 HV9924
 HV9924;                    North         East     Units Scale Factor Converg.
 HV9924;SPC MD       -   114,401.815   401,175.934   MT  0.99995468   +0 00 30.5
 HV9924;SPC MD       -   375,333.29  1,316,191.38   sFT  0.99995468   +0 00 30.5
 HV9924;SPC VA N     - 2,115,481.820 3,631,654.831   MT  0.99994935   +0 56 40.6
 HV9924;SPC VA N     - 6,940,543.27 11,914,854.22   sFT  0.99994935   +0 56 40.6
 HV9924;UTM  18      - 4,285,056.624   327,248.842   MT  0.99996751   -1 14 32.2
 HV9924
 HV9924!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9924!SPC MD       -   1.00000420  x   0.99995468  =   0.99995888
 HV9924!SPC VA N     -   1.00000420  x   0.99994935  =   0.99995355
 HV9924!UTM  18      -   1.00000420  x   0.99996751  =   0.99997171
 HV9924
 HV9924_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2724885056(NAD 83)
 HV9924
 HV9924                          SUPERSEDED SURVEY CONTROL
 HV9924
 HV9924  NAD 83(2007)-  38 41 50.19575(N)    076 59 11.33617(W) AD(2002.00) 0
 HV9924  ELLIP H (02/10/07)  -26.742  (m)                       GP(2002.00)    
 HV9924  ELLIP H (08/30/02)  -26.737  (m)                       GP(       ) 4 2
 HV9924  NAD 83(1993)-  38 41 50.19550(N)    076 59 11.33661(W) AD(       ) 1
 HV9924  ELLIP H (11/14/94)  -26.705  (m)                       GP(       ) 4 2
 HV9924  ELLIP H (09/09/94)  -26.713  (m)                       GP(       ) 4 1
 HV9924  NAD 83(1991)-  38 41 50.19441(N)    076 59 11.33739(W) AD(       ) 1
 HV9924
 HV9924.Superseded values are not recommended for survey control.
 HV9924
 HV9924.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9924.See file dsdata.pdf to determine how the superseded data were derived.
 HV9924
 HV9924_MARKER: DD = SURVEY DISK
 HV9924_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9924_STAMPING: T.S. 20410 PG
 HV9924_MARK LOGO: WSSC
 HV9924_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9924_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9924+STABILITY: SURFACE MOTION
 HV9924_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9924+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9924
 HV9924  HISTORY     - Date     Condition        Report By
 HV9924  HISTORY     - 1993     MONUMENTED       MSI
 HV9924
 HV9924                          STATION DESCRIPTION
 HV9924
 HV9924'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9924'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9924'APPROXIMATELY 1.7 MI (2.7 KM) SOUTHEAST OF THE TOWN OF TANTALLON. TO
 HV9924'REACH THE STATION FROM THE INTERSECTION OF OLD FORT ROAD AND INDIAN
 HV9924'HEAD HIGHWAY (S.R.210) PROCEED SOUTH FOR 1.05 MI (1.69 KM) ALONG
 HV9924'S.R.210 TO THE STATION LOCATED IN THE MEDIAN OF S.R.210.
 HV9924'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9924'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9924'T.S. 20410 PG.  THE DISK IS LOCATED 1.3 FT (0.4 M) SOUTH OF A
 HV9924'WITNESS POST, 12.5 FT (3.8 M) WEST OF NORTH-BOUND LANE OF S.R.210,
 HV9924'AND 32.8 FT (10.0 M) EAST OF SOUTH-BOUND LANE OF S.R.210.  THE
 HV9924'STATION IS APPROXIMATELY 400 FT (121.9 M) SOUTH OF THE BRIDGE OVER
 HV9924'THE PISCATAWAY CREEK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9925 ***********************************************************************
 HV9925  DESIGNATION -  20411
 HV9925  PID         -  HV9925
 HV9925  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9925  COUNTRY     -  US
 HV9925  USGS QUAD   -  LANHAM (2016)
 HV9925
 HV9925                         *CURRENT SURVEY CONTROL
 HV9925  ______________________________________________________________________
 HV9925* NAD 83(2011) POSITION- 38 52 34.47125(N) 076 48 10.57651(W)   ADJUSTED
 HV9925* NAD 83(2011) ELLIP HT-   -14.652 (meters)        (06/27/12)   ADJUSTED
 HV9925* NAD 83(2011) EPOCH   -  2010.00
 HV9925* NAVD 88 ORTHO HEIGHT -    18.0   (meters)       59.    (feet) GPS OBS
 HV9925  ______________________________________________________________________
 HV9925  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9925  GEOID HEIGHT    -        -33.000 (meters)                     GEOID93
 HV9925  GEOID HEIGHT    -        -32.643 (meters)                     GEOID18
 HV9925  NAD 83(2011) X  -  1,135,101.029 (meters)                     COMP
 HV9925  NAD 83(2011) Y  - -4,840,644.389 (meters)                     COMP
 HV9925  NAD 83(2011) Z  -  3,981,621.361 (meters)                     COMP
 HV9925  LAPLACE CORR    -         -5.71  (seconds)                    DEFLEC18
 HV9925
 HV9925  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9925  Standards:
 HV9925         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9925            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9925  -------------------------------------------------------------------
 HV9925  NETWORK    0.98   2.04           0.40   0.40   1.04      0.07388288
 HV9925  -------------------------------------------------------------------
 HV9925  Click here for local accuracies and other accuracy information.
 HV9925
 HV9925.The horizontal coordinates were established by GPS observations
 HV9925.and adjusted by the National Geodetic Survey in June 2012.
 HV9925
 HV9925.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9925.been affixed to the stable North American tectonic plate. See 
 HV9925.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9925
 HV9925.The horizontal coordinates are valid at the epoch date displayed above
 HV9925.which is a decimal equivalence of Year/Month/Day.
 HV9925
 HV9925.The orthometric height was determined by GPS observations and a
 HV9925.high-resolution geoid model.
 HV9925
 HV9925.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9925.GEOID18 height accuracy estimate available here.
 HV9925
 HV9925.Click photographs - Photos may exist for this station.
 HV9925
 HV9925.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9925
 HV9925.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9925
 HV9925.The ellipsoidal height was determined by GPS observations
 HV9925.and is referenced to NAD 83.
 HV9925
 HV9925. The following values were computed from the NAD 83(2011) position.
 HV9925
 HV9925;                    North         East     Units Scale Factor Converg.
 HV9925;SPC MD       -   134,286.436   417,099.606   MT  0.99994985   +0 07 25.3
 HV9925;SPC MD       -   440,571.42  1,368,434.29   sFT  0.99994985   +0 07 25.3
 HV9925;UTM  18      - 4,304,587.881   343,603.309   MT  0.99990120   -1 07 54.6
 HV9925
 HV9925!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9925!SPC MD       -   1.00000230  x   0.99994985  =   0.99995215
 HV9925!UTM  18      -   1.00000230  x   0.99990120  =   0.99990350
 HV9925
 HV9925_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4360304587(NAD 83)
 HV9925
 HV9925                          SUPERSEDED SURVEY CONTROL
 HV9925
 HV9925  NAD 83(2007)-  38 52 34.47159(N)    076 48 10.57736(W) AD(2002.00) 0
 HV9925  ELLIP H (02/10/07)  -14.642  (m)                       GP(2002.00)    
 HV9925  ELLIP H (08/30/02)  -14.645  (m)                       GP(       ) 4 2
 HV9925  ELLIP H (09/09/94)  -14.679  (m)                       GP(       ) 4 1
 HV9925  NAD 83(1991)-  38 52 34.47181(N)    076 48 10.57780(W) AD(       ) 1
 HV9925
 HV9925.Superseded values are not recommended for survey control.
 HV9925
 HV9925.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9925.See file dsdata.pdf to determine how the superseded data were derived.
 HV9925
 HV9925_MARKER: DD = SURVEY DISK
 HV9925_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9925_STAMPING: T.S. 20411 PG
 HV9925_MARK LOGO: WSSC
 HV9925_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9925_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9925+STABILITY: SURFACE MOTION
 HV9925_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9925+SATELLITE: SATELLITE OBSERVATIONS - May 24, 2001
 HV9925
 HV9925  HISTORY     - Date     Condition        Report By
 HV9925  HISTORY     - 1993     MONUMENTED       MSI
 HV9925  HISTORY     - 20010524 GOOD             DEWDAV
 HV9925
 HV9925                          STATION DESCRIPTION
 HV9925
 HV9925'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9925'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9925'APPROXIMATELY 1.9 MI (3.1 KM) SOUTHEAST OF THE TOWN OF LARGO.  TO
 HV9925'REACH THE STATION FROM THE INTERSECTION OF CENTRAL AVE (S.R.214) AND
 HV9925'LARGO ROAD (S.R.202),PROCEED 2.3 MI (3.7 KM) SOUTHEAST ALONG LARGO
 HV9925'ROAD TO THE INTERSECTION OF LARGO ROAD AND WHITE HOUSE ROAD.  THE
 HV9925'STATION IS LOCATED IN THE MEDIAN OF S.R.202 ON THE WEST SIDE OF THE
 HV9925'INTERSECTION WITH WHITE HOUSE ROAD.
 HV9925'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9925'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9925'T.S. 20411 PG.  THE DISK IS LOCATED 83.0 FT (25.3 M) EAST OF A SIGN
 HV9925'DO NOT ENTER ,44.1 FT NORTH OF THE CENTERLINE OF EAST-BOUND
 HV9925'S.R.202, AND 37.2 FT (11.3 M) SOUTH OF THE CENTERLINE OF WEST-BOUND
 HV9925'S.R.202.
 HV9925
 HV9925                          STATION RECOVERY (2001)
 HV9925
 HV9925'RECOVERY NOTE BY DEWBERRY DAVIS 2001 (CSW)
 HV9925'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9926 ***********************************************************************
 HV9926  DESIGNATION -  20412
 HV9926  PID         -  HV9926
 HV9926  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9926  COUNTRY     -  US
 HV9926  USGS QUAD   -  LANHAM (2016)
 HV9926
 HV9926                         *CURRENT SURVEY CONTROL
 HV9926  ______________________________________________________________________
 HV9926* NAD 83(2011) POSITION- 38 58 24.99686(N) 076 47 56.26946(W)   ADJUSTED
 HV9926* NAD 83(2011) ELLIP HT-    28.073 (meters)        (06/27/12)   ADJUSTED
 HV9926* NAD 83(2011) EPOCH   -  2010.00
 HV9926* NAVD 88 ORTHO HEIGHT -    60.6   (meters)      199.    (feet) GPS OBS
 HV9926  ______________________________________________________________________
 HV9926  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9926  GEOID HEIGHT    -        -32.870 (meters)                     GEOID93
 HV9926  GEOID HEIGHT    -        -32.513 (meters)                     GEOID18
 HV9926  NAD 83(2011) X  -  1,133,893.419 (meters)                     COMP
 HV9926  NAD 83(2011) Y  - -4,833,986.001 (meters)                     COMP
 HV9926  NAD 83(2011) Z  -  3,990,057.477 (meters)                     COMP
 HV9926  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 HV9926
 HV9926  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9926  Standards:
 HV9926         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9926            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9926  -------------------------------------------------------------------
 HV9926  NETWORK    1.07   2.27           0.47   0.40   1.16      0.02122568
 HV9926  -------------------------------------------------------------------
 HV9926  Click here for local accuracies and other accuracy information.
 HV9926
 HV9926.The horizontal coordinates were established by GPS observations
 HV9926.and adjusted by the National Geodetic Survey in June 2012.
 HV9926
 HV9926.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9926.been affixed to the stable North American tectonic plate. See 
 HV9926.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9926
 HV9926.The horizontal coordinates are valid at the epoch date displayed above
 HV9926.which is a decimal equivalence of Year/Month/Day.
 HV9926
 HV9926.The orthometric height was determined by GPS observations and a
 HV9926.high-resolution geoid model.
 HV9926
 HV9926.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9926.GEOID18 height accuracy estimate available here.
 HV9926
 HV9926.Click photographs - Photos may exist for this station.
 HV9926
 HV9926.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9926
 HV9926.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9926
 HV9926.The ellipsoidal height was determined by GPS observations
 HV9926.and is referenced to NAD 83.
 HV9926
 HV9926. The following values were computed from the NAD 83(2011) position.
 HV9926
 HV9926;                    North         East     Units Scale Factor Converg.
 HV9926;SPC MD       -   145,095.866   417,420.653   MT  0.99995130   +0 07 34.2
 HV9926;SPC MD       -   476,035.35  1,369,487.59   sFT  0.99995130   +0 07 34.2
 HV9926;UTM  18      - 4,315,387.127   344,161.321   MT  0.99989905   -1 07 54.1
 HV9926
 HV9926!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9926!SPC MD       -   0.99999560  x   0.99995130  =   0.99994690
 HV9926!UTM  18      -   0.99999560  x   0.99989905  =   0.99989465
 HV9926
 HV9926_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4416115387(NAD 83)
 HV9926
 HV9926                          SUPERSEDED SURVEY CONTROL
 HV9926
 HV9926  NAD 83(2007)-  38 58 24.99714(N)    076 47 56.27024(W) AD(2002.00) 0
 HV9926  ELLIP H (02/10/07)   28.096  (m)                       GP(2002.00)    
 HV9926  ELLIP H (08/30/02)   28.105  (m)                       GP(       ) 4 2
 HV9926  ELLIP H (09/09/94)   28.039  (m)                       GP(       ) 4 1
 HV9926  NAD 83(1991)-  38 58 24.99715(N)    076 47 56.27026(W) AD(       ) 1
 HV9926
 HV9926.Superseded values are not recommended for survey control.
 HV9926
 HV9926.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9926.See file dsdata.pdf to determine how the superseded data were derived.
 HV9926
 HV9926_MARKER: DD = SURVEY DISK
 HV9926_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9926_STAMPING: T.S. 20412 PG
 HV9926_MARK LOGO: WSSC
 HV9926_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9926_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9926+STABILITY: SURFACE MOTION
 HV9926_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9926+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9926
 HV9926  HISTORY     - Date     Condition        Report By
 HV9926  HISTORY     - 1993     MONUMENTED       MSI
 HV9926  HISTORY     - 19970417 GOOD             DMW
 HV9926
 HV9926                          STATION DESCRIPTION
 HV9926
 HV9926'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9926'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9926'APPROXIMATELY 3.7 MI (6.0 KM) NORTHWEST OF THE TOWN OF BOWIE.  TO
 HV9926'REACH THE STATION FROM THE INTERSECTION OF ANNAPOLIS ROAD (S.R.450)
 HV9926'AND GLENN DALE BLVD (S.R.193),PROCEED NORTH ALONG S.R. 193 FOR 1.0 MI
 HV9926'(1.6 KM) TO THE STATION IN THE MEDIAN.
 HV9926'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9926'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9926'T.S. 20412 PG.  THE DISK IS LOCATED 33.1 FT (10.1 M) WEST OF THE
 HV9926'EDGE OF PAVEMENT OF THE NORTH-BOUND LANE OF S.R.193, 28.2 FT (8.6 M)
 HV9926'EAST OF THE CENTERLINE OF THE SOUTH-BOUND LANE OF S.R.193, 103 FT
 HV9926'(31.4 M) SOUTHEAST OF THE NORTH END OF GUARD RAIL WHICH LIES ACROSS
 HV9926'THE SOUTH-BOUND LANE AND 117 FT (35.7 M) SOUTH OF THE FIREHOUSE SIGN.
 HV9926
 HV9926                          STATION RECOVERY (1997)
 HV9926
 HV9926'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 HV9926'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9927 ***********************************************************************
 HV9927  DESIGNATION -  20413
 HV9927  PID         -  HV9927
 HV9927  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9927  COUNTRY     -  US
 HV9927  USGS QUAD   -  LANHAM (2016)
 HV9927
 HV9927                         *CURRENT SURVEY CONTROL
 HV9927  ______________________________________________________________________
 HV9927* NAD 83(2011) POSITION- 38 53 22.37225(N) 076 49 37.28919(W)   ADJUSTED
 HV9927* NAD 83(2011) ELLIP HT-    10.016 (meters)        (06/27/12)   ADJUSTED
 HV9927* NAD 83(2011) EPOCH   -  2010.00
 HV9927* NAVD 88 ORTHO HEIGHT -    42.5   (meters)      139.    (feet) GPS OBS
 HV9927  ______________________________________________________________________
 HV9927  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9927  GEOID HEIGHT    -        -32.910 (meters)                     GEOID93
 HV9927  GEOID HEIGHT    -        -32.551 (meters)                     GEOID18
 HV9927  NAD 83(2011) X  -  1,132,859.013 (meters)                     COMP
 HV9927  NAD 83(2011) Y  - -4,840,237.013 (meters)                     COMP
 HV9927  NAD 83(2011) Z  -  3,982,786.684 (meters)                     COMP
 HV9927  LAPLACE CORR    -         -5.46  (seconds)                    DEFLEC18
 HV9927
 HV9927  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9927  Standards:
 HV9927         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9927            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9927  -------------------------------------------------------------------
 HV9927  NETWORK    1.02   2.21           0.44   0.39   1.13      0.03129987
 HV9927  -------------------------------------------------------------------
 HV9927  Click here for local accuracies and other accuracy information.
 HV9927
 HV9927.The horizontal coordinates were established by GPS observations
 HV9927.and adjusted by the National Geodetic Survey in June 2012.
 HV9927
 HV9927.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9927.been affixed to the stable North American tectonic plate. See 
 HV9927.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9927
 HV9927.The horizontal coordinates are valid at the epoch date displayed above
 HV9927.which is a decimal equivalence of Year/Month/Day.
 HV9927
 HV9927.The orthometric height was determined by GPS observations and a
 HV9927.high-resolution geoid model.
 HV9927
 HV9927.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9927.GEOID18 height accuracy estimate available here.
 HV9927
 HV9927.Click photographs - Photos may exist for this station.
 HV9927
 HV9927.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9927
 HV9927.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9927
 HV9927.The ellipsoidal height was determined by GPS observations
 HV9927.and is referenced to NAD 83.
 HV9927
 HV9927. The following values were computed from the NAD 83(2011) position.
 HV9927
 HV9927;                    North         East     Units Scale Factor Converg.
 HV9927;SPC MD       -   135,759.247   415,006.729   MT  0.99994988   +0 06 30.8
 HV9927;SPC MD       -   445,403.46  1,361,567.91   sFT  0.99994988   +0 06 30.8
 HV9927;UTM  18      - 4,306,106.133   341,543.302   MT  0.99990919   -1 08 50.2
 HV9927
 HV9927!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9927!SPC MD       -   0.99999843  x   0.99994988  =   0.99994831
 HV9927!UTM  18      -   0.99999843  x   0.99990919  =   0.99990762
 HV9927
 HV9927_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4154306106(NAD 83)
 HV9927
 HV9927                          SUPERSEDED SURVEY CONTROL
 HV9927
 HV9927  NAD 83(2007)-  38 53 22.37262(N)    076 49 37.29001(W) AD(2002.00) 0
 HV9927  ELLIP H (02/10/07)   10.031  (m)                       GP(2002.00)    
 HV9927  ELLIP H (08/30/02)   10.024  (m)                       GP(       ) 4 2
 HV9927  ELLIP H (09/09/94)    9.991  (m)                       GP(       ) 4 1
 HV9927  NAD 83(1991)-  38 53 22.37284(N)    076 49 37.29036(W) AD(       ) 1
 HV9927
 HV9927.Superseded values are not recommended for survey control.
 HV9927
 HV9927.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9927.See file dsdata.pdf to determine how the superseded data were derived.
 HV9927
 HV9927_MARKER: DD = SURVEY DISK
 HV9927_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9927_STAMPING: T.S. 20413 PG
 HV9927_MARK LOGO: WSSC
 HV9927_PROJECTION: FLUSH
 HV9927_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9927_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9927+STABILITY: SURFACE MOTION
 HV9927_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9927+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2022
 HV9927
 HV9927  HISTORY     - Date     Condition        Report By
 HV9927  HISTORY     - 1993     MONUMENTED       MSI
 HV9927  HISTORY     - 20010524 GOOD             DEWDAV
 HV9927  HISTORY     - 20160823 GOOD             MDSHA
 HV9927  HISTORY     - 20220615 GOOD             MDSHA
 HV9927
 HV9927                          STATION DESCRIPTION
 HV9927
 HV9927'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9927'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9927'APPROXIMATELY 4.9 MI (7.9 KM) SOUTHWEST OF THE TOWN OF BOWIE.  TO
 HV9927'REACH THE STATION FROM THE INTERSECTION OF CENTRAL AVENUE (S.R.214)
 HV9927'AND LARGO ROAD (S.R.202), PROCEED SOUTHEAST ALONG LARGO ROAD (S.R.202)
 HV9927'FOR 0.6 MI (1.0 KM) TO THE INTERSECTION OF LARGO ROAD AND CAMPUS WAY
 HV9927'SOUTH.  TURN RIGHT AND GO SOUTH ALONG CAMPUS WAY SOUTH FOR 0.1 MI
 HV9927'(0.2 KM) TO THE STATION IN THE MEDIAN.
 HV9927'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9927'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9927'T.S. 20413 PG.  THE DISK IS LOCATED 7.5 FT (2.3 M) SOUTH OF THE
 HV9927'EDGE OF THE PAVEMENT OF THE WEST-BOUND LANE OF CAMPUS WAY SOUTH, 13.9
 HV9927'FT (4.2 M) NORTH OF THE EDGE OF THE PAVEMENT OF THE EAST-BOUND LANE
 HV9927'OF CAMPUS WAY SOUTH, 14.0 FT (4.3 M) WEST OF SIGN  NO PARKING ANY
 HV9927'TIME  AND 41.0 FT (12.5 M) SOUTH-SOUTHEAST OF A FIRE HYDRANT.
 HV9927
 HV9927                          STATION RECOVERY (2001)
 HV9927
 HV9927'RECOVERY NOTE BY DEWBERRY DAVIS 2001 (CSW)
 HV9927'RECOVERED IN GOOD CONDITION.
 HV9927
 HV9927                          STATION RECOVERY (2016)
 HV9927
 HV9927'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2016 (PRK)
 HV9927'RECOVERED IN GOOD CONDITION.
 HV9927
 HV9927                          STATION RECOVERY (2022)
 HV9927
 HV9927'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 HV9927'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9928 ***********************************************************************
 HV9928  DESIGNATION -  20414
 HV9928  PID         -  HV9928
 HV9928  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9928  COUNTRY     -  US
 HV9928  USGS QUAD   -  LANHAM (2016)
 HV9928
 HV9928                         *CURRENT SURVEY CONTROL
 HV9928  ______________________________________________________________________
 HV9928* NAD 83(2011) POSITION- 38 54 18.71790(N) 076 51 21.66431(W)   ADJUSTED
 HV9928* NAD 83(2011) ELLIP HT-    24.917 (meters)        (06/27/12)   ADJUSTED
 HV9928* NAD 83(2011) EPOCH   -  2010.00
 HV9928* NAVD 88 ORTHO HEIGHT -    57.3   (meters)      188.    (feet) GPS OBS
 HV9928  ______________________________________________________________________
 HV9928  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9928  GEOID HEIGHT    -        -32.810 (meters)                     GEOID93
 HV9928  GEOID HEIGHT    -        -32.449 (meters)                     GEOID18
 HV9928  NAD 83(2011) X  -  1,130,164.122 (meters)                     COMP
 HV9928  NAD 83(2011) Y  - -4,839,758.475 (meters)                     COMP
 HV9928  NAD 83(2011) Z  -  3,984,148.320 (meters)                     COMP
 HV9928  LAPLACE CORR    -         -5.10  (seconds)                    DEFLEC18
 HV9928
 HV9928  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9928  Standards:
 HV9928         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9928            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9928  -------------------------------------------------------------------
 HV9928  NETWORK    1.11   2.59           0.47   0.44   1.32      0.11527665
 HV9928  -------------------------------------------------------------------
 HV9928  Click here for local accuracies and other accuracy information.
 HV9928
 HV9928.The horizontal coordinates were established by GPS observations
 HV9928.and adjusted by the National Geodetic Survey in June 2012.
 HV9928
 HV9928.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9928.been affixed to the stable North American tectonic plate. See 
 HV9928.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9928
 HV9928.The horizontal coordinates are valid at the epoch date displayed above
 HV9928.which is a decimal equivalence of Year/Month/Day.
 HV9928
 HV9928.The orthometric height was determined by GPS observations and a
 HV9928.high-resolution geoid model.
 HV9928
 HV9928.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9928.GEOID18 height accuracy estimate available here.
 HV9928
 HV9928.Click photographs - Photos may exist for this station.
 HV9928
 HV9928.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9928
 HV9928.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9928
 HV9928.The ellipsoidal height was determined by GPS observations
 HV9928.and is referenced to NAD 83.
 HV9928
 HV9928. The following values were computed from the NAD 83(2011) position.
 HV9928
 HV9928;                    North         East     Units Scale Factor Converg.
 HV9928;SPC MD       -   137,492.327   412,488.651   MT  0.99994998   +0 05 25.3
 HV9928;SPC MD       -   451,089.41  1,353,306.52   sFT  0.99994998   +0 05 25.3
 HV9928;UTM  18      - 4,307,893.930   339,063.908   MT  0.99991894   -1 09 57.2
 HV9928
 HV9928!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9928!SPC MD       -   0.99999609  x   0.99994998  =   0.99994607
 HV9928!UTM  18      -   0.99999609  x   0.99991894  =   0.99991503
 HV9928
 HV9928_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3906307893(NAD 83)
 HV9928
 HV9928                          SUPERSEDED SURVEY CONTROL
 HV9928
 HV9928  NAD 83(2007)-  38 54 18.71830(N)    076 51 21.66513(W) AD(2002.00) 0
 HV9928  ELLIP H (02/10/07)   24.934  (m)                       GP(2002.00)    
 HV9928  ELLIP H (08/30/02)   24.935  (m)                       GP(       ) 4 2
 HV9928  ELLIP H (09/09/94)   24.896  (m)                       GP(       ) 4 1
 HV9928  NAD 83(1991)-  38 54 18.71848(N)    076 51 21.66558(W) AD(       ) 1
 HV9928
 HV9928.Superseded values are not recommended for survey control.
 HV9928
 HV9928.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9928.See file dsdata.pdf to determine how the superseded data were derived.
 HV9928
 HV9928_MARKER: DD = SURVEY DISK
 HV9928_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9928_STAMPING: T.S. 20414 PG
 HV9928_MARK LOGO: WSSC
 HV9928_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9928_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9928+STABILITY: SURFACE MOTION
 HV9928_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9928+SATELLITE: SATELLITE OBSERVATIONS - March 04, 2004
 HV9928
 HV9928  HISTORY     - Date     Condition        Report By
 HV9928  HISTORY     - 1993     MONUMENTED       MSI
 HV9928  HISTORY     - 20040304 GOOD             URS
 HV9928
 HV9928                          STATION DESCRIPTION
 HV9928
 HV9928'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9928'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9928'APPROXIMATELY 1.2 MI (1.9 KM) SOUTH OF THE TOWN OF GLENARDEN.  TO
 HV9928'REACH THE STATION FROM THE INTERSECTION OF CENTRAL AVENUE (S.R.214)
 HV9928'AND BRIGHTSEAT ROAD, PROCEED NORTH ALONG BRIGHTSEAT ROAD FOR 1.2 MI
 HV9928'(1.9 KM) TO THE INTERSECTION OF BRIGHTSEAT ROAD AND ARENA DRIVE. TURN
 HV9928'LEFT AND GO WEST ALONG ARENA DRIVE FOR 0.2 MI (0.3 KM) TO THE
 HV9928'INTERSECTION OF ARENA DRIVE AND SPECTRUM DRIVE.  TURN LEFT AND GO
 HV9928'SOUTH ALONG SPECTRUM DRIVE FOR 0.1 MI (0.2 KM) TO THE STATION ON THE
 HV9928'WEST SIDE OF SPECTRUM DRIVE.
 HV9928'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9928'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9928'T.S. 20414 PG.  THE DISK IS LOCATED 73.6 FT (22.4 M)
 HV9928'SOUTH-SOUTHWEST FROM THE CENTER OF A STORM DRAIN MAN HOLE ON WEST SIDE
 HV9928'OF SPECTRUM DRIVE, 100.6 FT (30.7 M) SOUTHWEST FROM THE CENTER OF A
 HV9928'STORM DRAIN MANHOLE ON EAST SIDE OF SPECTRUM DRIVE, 6.0 FT (1.8 M)
 HV9928'EAST OF THE FENCELINE, 3.1 FT (0.9 M) NORTHWEST OF THE SIDEWALK AND
 HV9928'37.6 FT (11.5 M) WEST OF THE CENTERLINE OF SPECTRUM DRIVE.
 HV9928
 HV9928                          STATION RECOVERY (2004)
 HV9928
 HV9928'RECOVERY NOTE BY URS COMPANY 2004
 HV9928'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9929 ***********************************************************************
 HV9929  DESIGNATION -  20415
 HV9929  PID         -  HV9929
 HV9929  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9929  COUNTRY     -  US
 HV9929  USGS QUAD   -  ANACOSTIA (2016)
 HV9929
 HV9929                         *CURRENT SURVEY CONTROL
 HV9929  ______________________________________________________________________
 HV9929* NAD 83(2011) POSITION- 38 45 15.46410(N) 076 59 07.94291(W)   ADJUSTED
 HV9929* NAD 83(2011) ELLIP HT-    17.947 (meters)        (06/27/12)   ADJUSTED
 HV9929* NAD 83(2011) EPOCH   -  2010.00
 HV9929* NAVD 88 ORTHO HEIGHT -    50.3   (meters)      165.    (feet) GPS OBS
 HV9929  ______________________________________________________________________
 HV9929  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9929  GEOID HEIGHT    -        -32.790 (meters)                     GEOID93
 HV9929  GEOID HEIGHT    -        -32.415 (meters)                     GEOID18
 HV9929  NAD 83(2011) X  -  1,121,584.768 (meters)                     COMP
 HV9929  NAD 83(2011) Y  - -4,852,529.622 (meters)                     COMP
 HV9929  NAD 83(2011) Z  -  3,971,093.758 (meters)                     COMP
 HV9929  LAPLACE CORR    -         -2.77  (seconds)                    DEFLEC18
 HV9929
 HV9929  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9929  Standards:
 HV9929         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9929            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9929  -------------------------------------------------------------------
 HV9929  NETWORK    1.19   2.65           0.51   0.46   1.35      0.06796704
 HV9929  -------------------------------------------------------------------
 HV9929  Click here for local accuracies and other accuracy information.
 HV9929
 HV9929.The horizontal coordinates were established by GPS observations
 HV9929.and adjusted by the National Geodetic Survey in June 2012.
 HV9929
 HV9929.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9929.been affixed to the stable North American tectonic plate. See 
 HV9929.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9929
 HV9929.The horizontal coordinates are valid at the epoch date displayed above
 HV9929.which is a decimal equivalence of Year/Month/Day.
 HV9929
 HV9929.The orthometric height was determined by GPS observations and a
 HV9929.high-resolution geoid model.
 HV9929
 HV9929.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9929.GEOID18 height accuracy estimate available here.
 HV9929
 HV9929.Click photographs - Photos may exist for this station.
 HV9929
 HV9929.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9929
 HV9929.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9929
 HV9929.The ellipsoidal height was determined by GPS observations
 HV9929.and is referenced to NAD 83.
 HV9929
 HV9929. The following values were computed from the NAD 83(2011) position.
 HV9929
 HV9929;                    North         East     Units Scale Factor Converg.
 HV9929;SPC MD       -   120,731.236   401,256.905   MT  0.99995209   +0 00 32.7
 HV9929;SPC MD       -   396,099.06  1,316,457.03   sFT  0.99995209   +0 00 32.7
 HV9929;SPC VA N     - 2,121,811.700 3,631,632.382   MT  0.99995123   +0 56 42.7
 HV9929;SPC VA N     - 6,961,310.55 11,914,780.57   sFT  0.99995123   +0 56 42.7
 HV9929;UTM  18      - 4,291,382.854   327,468.040   MT  0.99996657   -1 14 35.6
 HV9929
 HV9929!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9929!SPC MD       -   0.99999718  x   0.99995209  =   0.99994927
 HV9929!SPC VA N     -   0.99999718  x   0.99995123  =   0.99994841
 HV9929!UTM  18      -   0.99999718  x   0.99996657  =   0.99996375
 HV9929
 HV9929_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2746891382(NAD 83)
 HV9929
 HV9929                          SUPERSEDED SURVEY CONTROL
 HV9929
 HV9929  NAD 83(2007)-  38 45 15.46456(N)    076 59 07.94374(W) AD(2002.00) 0
 HV9929  ELLIP H (02/10/07)   17.946  (m)                       GP(2002.00)    
 HV9929  ELLIP H (08/30/02)   17.948  (m)                       GP(       ) 4 2
 HV9929  NAD 83(1993)-  38 45 15.46446(N)    076 59 07.94429(W) AD(       ) 1
 HV9929  ELLIP H (09/09/94)   17.962  (m)                       GP(       ) 4 1
 HV9929  NAD 83(1991)-  38 45 15.46422(N)    076 59 07.94450(W) AD(       ) 1
 HV9929
 HV9929.Superseded values are not recommended for survey control.
 HV9929
 HV9929.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9929.See file dsdata.pdf to determine how the superseded data were derived.
 HV9929
 HV9929_MARKER: DD = SURVEY DISK
 HV9929_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9929_STAMPING: T.S. 20415 PG
 HV9929_MARK LOGO: WSSC
 HV9929_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9929_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9929+STABILITY: SURFACE MOTION
 HV9929_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9929+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9929
 HV9929  HISTORY     - Date     Condition        Report By
 HV9929  HISTORY     - 1993     MONUMENTED       MSI
 HV9929
 HV9929                          STATION DESCRIPTION
 HV9929
 HV9929'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9929'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9929'APPROXIMATELY 3.4 MI (5.5 KM) SOUTH OF THE TOWN OF TANTALLON.  TO
 HV9929'REACH THE STATION FROM THE INTERSECTION OF INDIAN HEAD HIGHWAY
 HV9929'(S.R.210) AND OLD FORT ROAD, PROCEED EAST 0.4 MI (0.6 KM) ALONG OLD
 HV9929'FORT ROAD TO THE STATION ON THE NORTH SIDE OF OLD FORT ROAD.
 HV9929'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9929'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9929'T.S. 20415 PG.  THE DISK IS LOCATED 46.5 FT (14.2 M) NORTHEAST OF
 HV9929'THE EDGE OF THE PAVEMENT OF OLD FORT ROAD, 52.5 FT (16.0 M) EAST OF
 HV9929'THE TELEPHONE POLE (C AND P MD NUMBER 22), 63 FT (19.2 M) EAST OF THE
 HV9929'SOUTHEAST END OF A CULVERT, AND 122.4 FT (37.3 M) SOUTHWEST OF THE
 HV9929'SOUTHEAST GATE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9930 ***********************************************************************
 HV9930  DESIGNATION -  20416
 HV9930  PID         -  HV9930
 HV9930  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9930  COUNTRY     -  US
 HV9930  USGS QUAD   -  ANACOSTIA (2016)
 HV9930
 HV9930                         *CURRENT SURVEY CONTROL
 HV9930  ______________________________________________________________________
 HV9930* NAD 83(2011) POSITION- 38 50 31.25364(N) 076 52 41.08739(W)   ADJUSTED
 HV9930* NAD 83(2011) ELLIP HT-    52.979 (meters)        (06/27/12)   ADJUSTED
 HV9930* NAD 83(2011) EPOCH   -  2010.00
 HV9930* NAVD 88 ORTHO HEIGHT -    85.428 (meters)      280.27  (feet) ADJUSTED
 HV9930  ______________________________________________________________________
 HV9930  GEOID HEIGHT    -        -32.481 (meters)                     GEOID18
 HV9930  NAD 83(2011) X  -  1,129,304.843 (meters)                     COMP
 HV9930  NAD 83(2011) Y  - -4,844,501.859 (meters)                     COMP
 HV9930  NAD 83(2011) Z  -  3,978,705.034 (meters)                     COMP
 HV9930  LAPLACE CORR    -         -5.03  (seconds)                    DEFLEC18
 HV9930  DYNAMIC HEIGHT  -         85.381 (meters)      280.12  (feet) COMP
 HV9930  MODELED GRAVITY -    980,071.1   (mgal)                       NAVD 88
 HV9930
 HV9930  VERT ORDER      -  FIRST     CLASS II
 HV9930
 HV9930  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9930  Standards:
 HV9930         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9930            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9930  -------------------------------------------------------------------
 HV9930  NETWORK    0.87   1.78           0.37   0.34   0.91      0.18335838
 HV9930  -------------------------------------------------------------------
 HV9930  Click here for local accuracies and other accuracy information.
 HV9930
 HV9930.The horizontal coordinates were established by GPS observations
 HV9930.and adjusted by the National Geodetic Survey in June 2012.
 HV9930
 HV9930.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9930.been affixed to the stable North American tectonic plate. See 
 HV9930.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9930
 HV9930.The horizontal coordinates are valid at the epoch date displayed above
 HV9930.which is a decimal equivalence of Year/Month/Day.
 HV9930
 HV9930.The orthometric height was determined by differential leveling and
 HV9930.adjusted by the NATIONAL GEODETIC SURVEY
 HV9930.in August 2020.
 HV9930
 HV9930.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9930.GEOID18 height accuracy estimate available here.
 HV9930
 HV9930.Click photographs - Photos may exist for this station.
 HV9930
 HV9930.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9930
 HV9930.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9930
 HV9930.The ellipsoidal height was determined by GPS observations
 HV9930.and is referenced to NAD 83.
 HV9930
 HV9930.The dynamic height is computed by dividing the NAVD 88
 HV9930.geopotential number by the normal gravity value computed on the
 HV9930.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9930.degrees latitude (g = 980.6199 gals.).
 HV9930
 HV9930.The modeled gravity was interpolated from observed gravity values.
 HV9930
 HV9930. The following values were computed from the NAD 83(2011) position.
 HV9930
 HV9930;                    North         East     Units Scale Factor Converg.
 HV9930;SPC MD       -   130,475.591   410,584.420   MT  0.99995002   +0 04 35.5
 HV9930;SPC MD       -   428,068.67  1,347,059.05   sFT  0.99995002   +0 04 35.5
 HV9930;UTM  18      - 4,300,920.788   337,006.451   MT  0.99992715   -1 10 41.3
 HV9930
 HV9930!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9930!SPC MD       -   0.99999169  x   0.99995002  =   0.99994171
 HV9930!UTM  18      -   0.99999169  x   0.99992715  =   0.99991884
 HV9930
 HV9930_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3700600920(NAD 83)
 HV9930
 HV9930                          SUPERSEDED SURVEY CONTROL
 HV9930
 HV9930  NAD 83(2007)-  38 50 31.25402(N)    076 52 41.08822(W) AD(2002.00) 0
 HV9930  ELLIP H (02/10/07)   52.992  (m)                       GP(2002.00)    
 HV9930  ELLIP H (08/30/02)   52.972  (m)                       GP(       ) 4 2
 HV9930  ELLIP H (09/09/94)   52.978  (m)                       GP(       ) 4 1
 HV9930  NAD 83(1991)-  38 50 31.25485(N)    076 52 41.08841(W) AD(       ) 1
 HV9930  NAVD 88 (01/27/94)   85.4    (m)  GEOID93  model used  GPS OBS        
 HV9930
 HV9930.Superseded values are not recommended for survey control.
 HV9930
 HV9930.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9930.See file dsdata.pdf to determine how the superseded data were derived.
 HV9930
 HV9930_MARKER: DD = SURVEY DISK
 HV9930_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9930_STAMPING: 20416 PG
 HV9930_MARK LOGO: WSSC
 HV9930_PROJECTION: FLUSH
 HV9930_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9930+STABILITY: SURFACE MOTION
 HV9930_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9930+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 HV9930
 HV9930  HISTORY     - Date     Condition        Report By
 HV9930  HISTORY     - 1993     MONUMENTED       MSI
 HV9930  HISTORY     - 20191028 GOOD             MDSHA
 HV9930
 HV9930                          STATION DESCRIPTION
 HV9930
 HV9930'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9930'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9930'APPROXIMATELY 1.5 MI (2.4 KM) NORTHEAST OF THE TOWN OF MORNINGSIDE.
 HV9930'TO REACH THE STATION FROM THE INTERSECTION OF PENNSYLVANIA AVENUE
 HV9930'(S.R.4)AND FORESTVILLE ROAD, PROCEED WEST ALONG PENNSLYVANIA AVENUE
 HV9930'FOR 0.2 MI (0.3 KM) TO THE STATION LOCATED IN THE MEDIAN.
 HV9930'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9930'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9930'T.S. 20416 PG.  THE DISK IS LOCATED 40.0 FT (12.2 M) NORTH OF THE
 HV9930'CENTERLINE OF THE EAST-BOUND LANE OF PENNSLYVANIA AVE, 38.0 FT
 HV9930'(11.6 M) SOUTH OF THE CENTERLINE OF THE WEST-BOUND LANE OF THE
 HV9930'PENNSLYVANIA AVE, 278.8 FT (85.0 M) WEST OF THE SIGN  FORESTVILLE RD
 HV9930'NEXT SIGNAL , AND 1.1 FT (0.3 M) NORTHWEST OF THE WITNESS POST.
 HV9930
 HV9930                          STATION RECOVERY (2019)
 HV9930
 HV9930'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 HV9930'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7161 ***********************************************************************
 JV7161  DESIGNATION -  20417
 JV7161  PID         -  JV7161
 JV7161  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7161  COUNTRY     -  US
 JV7161  USGS QUAD   -  LAUREL (2016)
 JV7161
 JV7161                         *CURRENT SURVEY CONTROL
 JV7161  ______________________________________________________________________
 JV7161* NAD 83(2011) POSITION- 39 00 35.74346(N) 076 48 05.06389(W)   ADJUSTED
 JV7161* NAD 83(2011) ELLIP HT-    32.548 (meters)        (06/27/12)   ADJUSTED
 JV7161* NAD 83(2011) EPOCH   -  2010.00
 JV7161* NAVD 88 ORTHO HEIGHT -    65.0   (meters)      213.    (feet) GPS OBS
 JV7161  ______________________________________________________________________
 JV7161  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7161  GEOID HEIGHT    -        -32.820 (meters)                     GEOID93
 JV7161  GEOID HEIGHT    -        -32.465 (meters)                     GEOID18
 JV7161  NAD 83(2011) X  -  1,133,108.859 (meters)                     COMP
 JV7161  NAD 83(2011) Y  - -4,831,567.818 (meters)                     COMP
 JV7161  NAD 83(2011) Z  -  3,993,194.055 (meters)                     COMP
 JV7161  LAPLACE CORR    -         -5.56  (seconds)                    DEFLEC18
 JV7161
 JV7161  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7161  Standards:
 JV7161         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7161            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7161  -------------------------------------------------------------------
 JV7161  NETWORK    1.33   2.86           0.54   0.55   1.46     -0.01828879
 JV7161  -------------------------------------------------------------------
 JV7161  Click here for local accuracies and other accuracy information.
 JV7161
 JV7161.The horizontal coordinates were established by GPS observations
 JV7161.and adjusted by the National Geodetic Survey in June 2012.
 JV7161
 JV7161.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7161.been affixed to the stable North American tectonic plate. See 
 JV7161.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7161
 JV7161.The horizontal coordinates are valid at the epoch date displayed above
 JV7161.which is a decimal equivalence of Year/Month/Day.
 JV7161
 JV7161.The orthometric height was determined by GPS observations and a
 JV7161.high-resolution geoid model.
 JV7161
 JV7161.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7161.GEOID18 height accuracy estimate available here.
 JV7161
 JV7161.Click photographs - Photos may exist for this station.
 JV7161
 JV7161.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7161
 JV7161.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7161
 JV7161.The ellipsoidal height was determined by GPS observations
 JV7161.and is referenced to NAD 83.
 JV7161
 JV7161. The following values were computed from the NAD 83(2011) position.
 JV7161
 JV7161;                    North         East     Units Scale Factor Converg.
 JV7161;SPC MD       -   149,127.109   417,200.195   MT  0.99995258   +0 07 28.7
 JV7161;SPC MD       -   489,261.19  1,368,764.31   sFT  0.99995258   +0 07 28.7
 JV7161;UTM  18      - 4,319,422.027   344,029.450   MT  0.99989955   -1 08 02.9
 JV7161
 JV7161!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7161!SPC MD       -   0.99999489  x   0.99995258  =   0.99994747
 JV7161!UTM  18      -   0.99999489  x   0.99989955  =   0.99989444
 JV7161
 JV7161_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4402919422(NAD 83)
 JV7161
 JV7161                          SUPERSEDED SURVEY CONTROL
 JV7161
 JV7161  NAD 83(2007)-  39 00 35.74371(N)    076 48 05.06466(W) AD(2002.00) 0
 JV7161  ELLIP H (02/10/07)   32.573  (m)                       GP(2002.00)    
 JV7161  ELLIP H (08/30/02)   32.594  (m)                       GP(       ) 4 2
 JV7161  ELLIP H (09/09/94)   32.508  (m)                       GP(       ) 4 1
 JV7161  NAD 83(1991)-  39 00 35.74368(N)    076 48 05.06463(W) AD(       ) 1
 JV7161
 JV7161.Superseded values are not recommended for survey control.
 JV7161
 JV7161.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7161.See file dsdata.pdf to determine how the superseded data were derived.
 JV7161
 JV7161_MARKER: DD = SURVEY DISK
 JV7161_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7161_STAMPING: T.S. 20417 PG
 JV7161_MARK LOGO: WSSC
 JV7161_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7161_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7161+STABILITY: SURFACE MOTION
 JV7161_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7161+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7161
 JV7161  HISTORY     - Date     Condition        Report By
 JV7161  HISTORY     - 1993     MONUMENTED       MSI
 JV7161
 JV7161                          STATION DESCRIPTION
 JV7161
 JV7161'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7161'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7161'APPROXIMATELY 1.3 MI (2.1 KM) WEST OF THE TOWN OF BOWIE.  TO REACH
 JV7161'THE STATION FROM THE INTERSECTION OF LANHAM-SEVERN ROAD (S.R.564) AND
 JV7161'SPRINGFIELD ROAD, PROCEED NORTH ALONG SPRINGFIELD ROAD FOR 0.7 MI
 JV7161'(1.1 KM) TO THE INTERSECTION WITH DUCKETTOWN ROAD.  TURN RIGHT AND GO
 JV7161'EAST ALONG DUCKETTOWN ROAD FOR 0.4 MI (0.6 KM) TO THE INTERSECTION
 JV7161'WITH JUPITER ROAD.  TURN LEFT AND GO NORTH ALONG JUPITER ROAD FOR
 JV7161'APPROXIMATELY 150 FT (45.7 M) TO THE STATION LOCATED ON THE WEST
 JV7161'SIDE.
 JV7161'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7161'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7161'T.S. 20417 PG.  THE DISK IS LOCATED 11.4 FT (3.5 M) WEST OF THE
 JV7161'CENTERLINE OF JUPITER ROAD, 70.2 FT (21.4 M) NORTH OF A  STOP
 JV7161'SIGN, AND 86.5 FT (26.4 M) SOUTHWEST OF THE POWER POLE  (C AND E CO.
 JV7161'NUMBER 218237).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7162 ***********************************************************************
 JV7162  DESIGNATION -  20419
 JV7162  PID         -  JV7162
 JV7162  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7162  COUNTRY     -  US
 JV7162  USGS QUAD   -  LAUREL (2016)
 JV7162
 JV7162                         *CURRENT SURVEY CONTROL
 JV7162  ______________________________________________________________________
 JV7162* NAD 83(2011) POSITION- 39 02 00.83726(N) 076 51 08.05168(W)   ADJUSTED
 JV7162* NAD 83(2011) ELLIP HT-    10.465 (meters)        (06/27/12)   ADJUSTED
 JV7162* NAD 83(2011) EPOCH   -  2010.00
 JV7162* NAVD 88 ORTHO HEIGHT -    42.8   (meters)      140.    (feet) GPS OBS
 JV7162  ______________________________________________________________________
 JV7162  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7162  GEOID HEIGHT    -        -32.660 (meters)                     GEOID93
 JV7162  GEOID HEIGHT    -        -32.299 (meters)                     GEOID18
 JV7162  NAD 83(2011) X  -  1,128,442.376 (meters)                     COMP
 JV7162  NAD 83(2011) Y  - -4,830,945.576 (meters)                     COMP
 JV7162  NAD 83(2011) Z  -  3,995,218.841 (meters)                     COMP
 JV7162  LAPLACE CORR    -         -5.21  (seconds)                    DEFLEC18
 JV7162
 JV7162  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7162  Standards:
 JV7162         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7162            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7162  -------------------------------------------------------------------
 JV7162  NETWORK    1.09   2.39           0.46   0.43   1.22      0.03975657
 JV7162  -------------------------------------------------------------------
 JV7162  Click here for local accuracies and other accuracy information.
 JV7162
 JV7162.The horizontal coordinates were established by GPS observations
 JV7162.and adjusted by the National Geodetic Survey in June 2012.
 JV7162
 JV7162.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7162.been affixed to the stable North American tectonic plate. See 
 JV7162.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7162
 JV7162.The horizontal coordinates are valid at the epoch date displayed above
 JV7162.which is a decimal equivalence of Year/Month/Day.
 JV7162
 JV7162.The orthometric height was determined by GPS observations and a
 JV7162.high-resolution geoid model.
 JV7162
 JV7162.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7162.GEOID18 height accuracy estimate available here.
 JV7162
 JV7162.Click photographs - Photos may exist for this station.
 JV7162
 JV7162.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7162
 JV7162.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7162
 JV7162.The ellipsoidal height was determined by GPS observations
 JV7162.and is referenced to NAD 83.
 JV7162
 JV7162. The following values were computed from the NAD 83(2011) position.
 JV7162
 JV7162;                    North         East     Units Scale Factor Converg.
 JV7162;SPC MD       -   151,742.732   412,793.565   MT  0.99995363   +0 05 33.9
 JV7162;SPC MD       -   497,842.61  1,354,306.89   sFT  0.99995363   +0 05 33.9
 JV7162;UTM  18      - 4,322,133.728   339,681.556   MT  0.99991648   -1 10 00.3
 JV7162
 JV7162!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7162!SPC MD       -   0.99999836  x   0.99995363  =   0.99995199
 JV7162!UTM  18      -   0.99999836  x   0.99991648  =   0.99991484
 JV7162
 JV7162_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3968122133(NAD 83)
 JV7162
 JV7162                          SUPERSEDED SURVEY CONTROL
 JV7162
 JV7162  NAD 83(2007)-  39 02 00.83749(N)    076 51 08.05245(W) AD(2002.00) 0
 JV7162  ELLIP H (02/10/07)   10.491  (m)                       GP(2002.00)    
 JV7162  ELLIP H (08/30/02)   10.509  (m)                       GP(       ) 4 2
 JV7162  ELLIP H (09/09/94)   10.425  (m)                       GP(       ) 4 1
 JV7162  NAD 83(1991)-  39 02 00.83739(N)    076 51 08.05249(W) AD(       ) 1
 JV7162
 JV7162.Superseded values are not recommended for survey control.
 JV7162
 JV7162.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7162.See file dsdata.pdf to determine how the superseded data were derived.
 JV7162
 JV7162_MARKER: DD = SURVEY DISK
 JV7162_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7162_STAMPING: T.S. 20419 PG
 JV7162_MARK LOGO: WSSC
 JV7162_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7162_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7162+STABILITY: SURFACE MOTION
 JV7162_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7162+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7162
 JV7162  HISTORY     - Date     Condition        Report By
 JV7162  HISTORY     - 1993     MONUMENTED       MSI
 JV7162
 JV7162                          STATION DESCRIPTION
 JV7162
 JV7162'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7162'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7162'APPROXIMATELY 2.7 MI (4.3 KM) NORTH OF THE TOWN OF GREENBELT.  THE
 JV7162'STATION IS LOCATED AT THE OVERPASS OF THE BALTIMORE-WASHINGTON
 JV7162'PARKWAY AND THE POWDER MILL ROAD.  THE STATION IS LOCATED ON THE WEST
 JV7162'SIDE OF THE BALTIMORE-WASHINGTON PARKWAY SOUTH-BOUND LANE.
 JV7162'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7162'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7162'T.S. 20419 PG.  THE DISK IS LOCATED 70.4 FT (21.5 M)
 JV7162'SOUTH-SOUTHWEST OF NORTH END OF THE METAL GUARD RAIL ADJACENT TO
 JV7162'SOUTH-BOUND LANE, 4.6 FT (1.4 M) NORTH-NORTHEAST OF THE NORTHWEST
 JV7162'CORNER OF A CONCRETE BARRIER ADJOINING THE BRIDGE, AND 15.6 FT
 JV7162'(4.8 M) NORTHWEST OF WEST EDGE OF PAVEMENT OF THE SOUTH-BOUND LANE OF
 JV7162'BALTIMORE-WASHINGTON PARKWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9932 ***********************************************************************
 HV9932  DESIGNATION -  20420
 HV9932  PID         -  HV9932
 HV9932  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9932  COUNTRY     -  US
 HV9932  USGS QUAD   -  LOWER MARLBORO (2016)
 HV9932
 HV9932                         *CURRENT SURVEY CONTROL
 HV9932  ______________________________________________________________________
 HV9932* NAD 83(2011) POSITION- 38 44 43.36465(N) 076 44 58.46445(W)   ADJUSTED
 HV9932* NAD 83(2011) ELLIP HT-    18.759 (meters)        (06/27/12)   ADJUSTED
 HV9932* NAD 83(2011) EPOCH   -  2010.00
 HV9932* NAVD 88 ORTHO HEIGHT -    51.8   (meters)      170.    (feet) GPS OBS
 HV9932  ______________________________________________________________________
 HV9932  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9932  GEOID HEIGHT    -        -33.430 (meters)                     GEOID93
 HV9932  GEOID HEIGHT    -        -33.082 (meters)                     GEOID18
 HV9932  NAD 83(2011) X  -  1,141,701.951 (meters)                     COMP
 HV9932  NAD 83(2011) Y  - -4,848,473.041 (meters)                     COMP
 HV9932  NAD 83(2011) Z  -  3,970,322.310 (meters)                     COMP
 HV9932  LAPLACE CORR    -         -5.82  (seconds)                    DEFLEC18
 HV9932
 HV9932  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9932  Standards:
 HV9932         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9932            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9932  -------------------------------------------------------------------
 HV9932  NETWORK    1.22   2.55           0.54   0.45   1.30     -0.03202624
 HV9932  -------------------------------------------------------------------
 HV9932  Click here for local accuracies and other accuracy information.
 HV9932
 HV9932.The horizontal coordinates were established by GPS observations
 HV9932.and adjusted by the National Geodetic Survey in June 2012.
 HV9932
 HV9932.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9932.been affixed to the stable North American tectonic plate. See 
 HV9932.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9932
 HV9932.The horizontal coordinates are valid at the epoch date displayed above
 HV9932.which is a decimal equivalence of Year/Month/Day.
 HV9932
 HV9932.The orthometric height was determined by GPS observations and a
 HV9932.high-resolution geoid model.
 HV9932
 HV9932.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9932.GEOID18 height accuracy estimate available here.
 HV9932
 HV9932.Click photographs - Photos may exist for this station.
 HV9932
 HV9932.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9932
 HV9932.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9932
 HV9932.The ellipsoidal height was determined by GPS observations
 HV9932.and is referenced to NAD 83.
 HV9932
 HV9932. The following values were computed from the NAD 83(2011) position.
 HV9932
 HV9932;                    North         East     Units Scale Factor Converg.
 HV9932;SPC MD       -   119,771.216   421,770.024   MT  0.99995243   +0 09 25.8
 HV9932;SPC MD       -   392,949.40  1,383,757.15   sFT  0.99995243   +0 09 25.8
 HV9932;UTM  18      - 4,289,974.776   347,954.714   MT  0.99988468   -1 05 42.7
 HV9932
 HV9932!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9932!SPC MD       -   0.99999706  x   0.99995243  =   0.99994949
 HV9932!UTM  18      -   0.99999706  x   0.99988468  =   0.99988174
 HV9932
 HV9932_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4795489974(NAD 83)
 HV9932
 HV9932                          SUPERSEDED SURVEY CONTROL
 HV9932
 HV9932  NAD 83(2007)-  38 44 43.36488(N)    076 44 58.46564(W) AD(2002.00) 0
 HV9932  ELLIP H (02/10/07)   18.733  (m)                       GP(2002.00)    
 HV9932  ELLIP H (08/30/02)   18.727  (m)                       GP(       ) 4 2
 HV9932  NAD 83(1993)-  38 44 43.36472(N)    076 44 58.46580(W) AD(       ) 1
 HV9932  ELLIP H (11/14/94)   18.744  (m)                       GP(       ) 4 2
 HV9932  ELLIP H (09/09/94)   18.727  (m)                       GP(       ) 4 1
 HV9932  NAD 83(1991)-  38 44 43.36454(N)    076 44 58.46617(W) AD(       ) 1
 HV9932
 HV9932.Superseded values are not recommended for survey control.
 HV9932
 HV9932.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9932.See file dsdata.pdf to determine how the superseded data were derived.
 HV9932
 HV9932_MARKER: DD = SURVEY DISK
 HV9932_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9932_STAMPING: T.S. 20420 PG
 HV9932_MARK LOGO: WSSC
 HV9932_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9932_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9932+STABILITY: SURFACE MOTION
 HV9932_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9932+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9932
 HV9932  HISTORY     - Date     Condition        Report By
 HV9932  HISTORY     - 1993     MONUMENTED       MSI
 HV9932
 HV9932                          STATION DESCRIPTION
 HV9932
 HV9932'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9932'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9932'APPROXIMATELY 4.1 MI (6.6 KM) EAST OF THE TOWN OF ROSARYVILLE.  TO
 HV9932'REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (U.S.301)
 HV9932'AND CROOM ROAD (S.R.382), PROCEED SOUTH ALONG CROOM ROAD FOR 4.1 MI
 HV9932'(6.6 KM) UNTIL THE INTERSECTION OF CROOM ROAD AND ST. THOMAS CHURCH
 HV9932'ROAD.  TURN LEFT AND GO EAST ALONG ST. THOMAS CHURCH ROAD FOR 0.8 MI
 HV9932'(1.3 KM) TO THE STATION ON THE NORTH SIDE OF ST. THOMAS CHURCH ROAD.
 HV9932'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9932'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9932'T.S. 20420 PG.  THE DISK IS LOCATED 6.9 FT (2.1 M) WEST FROM THE
 HV9932'FENCE, 16.1 FT (4.9 M) EAST FROM THE CENTERLINE OF ST. THOMAS CHURCH
 HV9932'AND 83.3 FT (25.4 M) SOUTH FROM TELEPHONE POLE (C AND P P9).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9933 ***********************************************************************
 HV9933  DESIGNATION -  20421
 HV9933  PID         -  HV9933
 HV9933  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9933  COUNTRY     -  US
 HV9933  USGS QUAD   -  PISCATAWAY (2016)
 HV9933
 HV9933                         *CURRENT SURVEY CONTROL
 HV9933  ______________________________________________________________________
 HV9933* NAD 83(2011) POSITION- 38 42 12.43231(N) 076 52 35.86581(W)   ADJUSTED
 HV9933* NAD 83(2011) ELLIP HT-    38.407 (meters)        (06/27/12)   ADJUSTED
 HV9933* NAD 83(2011) EPOCH   -  2010.00
 HV9933* NAVD 88 ORTHO HEIGHT -    71.2   (meters)      234.    (feet) GPS OBS
 HV9933  ______________________________________________________________________
 HV9933  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9933  GEOID HEIGHT    -        -33.160 (meters)                     GEOID93
 HV9933  GEOID HEIGHT    -        -32.795 (meters)                     GEOID18
 HV9933  NAD 83(2011) X  -  1,131,611.992 (meters)                     COMP
 HV9933  NAD 83(2011) Y  - -4,853,843.331 (meters)                     COMP
 HV9933  NAD 83(2011) Z  -  3,966,703.565 (meters)                     COMP
 HV9933  LAPLACE CORR    -         -5.66  (seconds)                    DEFLEC18
 HV9933
 HV9933  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9933  Standards:
 HV9933         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9933            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9933  -------------------------------------------------------------------
 HV9933  NETWORK    1.10   2.33           0.46   0.44   1.19      0.07043988
 HV9933  -------------------------------------------------------------------
 HV9933  Click here for local accuracies and other accuracy information.
 HV9933
 HV9933.The horizontal coordinates were established by GPS observations
 HV9933.and adjusted by the National Geodetic Survey in June 2012.
 HV9933
 HV9933.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9933.been affixed to the stable North American tectonic plate. See 
 HV9933.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9933
 HV9933.The horizontal coordinates are valid at the epoch date displayed above
 HV9933.which is a decimal equivalence of Year/Month/Day.
 HV9933
 HV9933.The orthometric height was determined by GPS observations and a
 HV9933.high-resolution geoid model.
 HV9933
 HV9933.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9933.GEOID18 height accuracy estimate available here.
 HV9933
 HV9933.Click photographs - Photos may exist for this station.
 HV9933
 HV9933.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9933
 HV9933.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9933
 HV9933.The ellipsoidal height was determined by GPS observations
 HV9933.and is referenced to NAD 83.
 HV9933
 HV9933. The following values were computed from the NAD 83(2011) position.
 HV9933
 HV9933;                    North         East     Units Scale Factor Converg.
 HV9933;SPC MD       -   115,094.648   410,731.126   MT  0.99995435   +0 04 38.8
 HV9933;SPC MD       -   377,606.36  1,347,540.37   sFT  0.99995435   +0 04 38.8
 HV9933;UTM  18      - 4,285,540.686   336,816.815   MT  0.99992792   -1 10 25.3
 HV9933
 HV9933!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9933!SPC MD       -   0.99999397  x   0.99995435  =   0.99994832
 HV9933!UTM  18      -   0.99999397  x   0.99992792  =   0.99992189
 HV9933
 HV9933_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3681685540(NAD 83)
 HV9933
 HV9933                          SUPERSEDED SURVEY CONTROL
 HV9933
 HV9933  NAD 83(2007)-  38 42 12.43252(N)    076 52 35.86707(W) AD(2002.00) 0
 HV9933  ELLIP H (02/10/07)   38.370  (m)                       GP(2002.00)    
 HV9933  ELLIP H (08/30/02)   38.370  (m)                       GP(       ) 4 2
 HV9933  NAD 83(1993)-  38 42 12.43222(N)    076 52 35.86729(W) AD(       ) 1
 HV9933  ELLIP H (11/14/94)   38.413  (m)                       GP(       ) 4 2
 HV9933  ELLIP H (09/09/94)   38.403  (m)                       GP(       ) 4 1
 HV9933  NAD 83(1991)-  38 42 12.43192(N)    076 52 35.86774(W) AD(       ) 1
 HV9933
 HV9933.Superseded values are not recommended for survey control.
 HV9933
 HV9933.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9933.See file dsdata.pdf to determine how the superseded data were derived.
 HV9933
 HV9933_MARKER: DD = SURVEY DISK
 HV9933_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9933_STAMPING: T.S. 20421 PG
 HV9933_MARK LOGO: WSSC
 HV9933_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9933_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9933+STABILITY: SURFACE MOTION
 HV9933_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9933+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9933
 HV9933  HISTORY     - Date     Condition        Report By
 HV9933  HISTORY     - 1993     MONUMENTED       MSI
 HV9933
 HV9933                          STATION DESCRIPTION
 HV9933
 HV9933'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9933'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9933'APPROXIMATELY 1.6 MI (2.6 KM) WEST OF THE TOWN OF BRANDYWINE.  TO
 HV9933'REACH THE STATION FROM THE INTERSECTION OF BRANCH AVE (S.R.5) AND
 HV9933'BRANDYWINE ROAD (S.R.381), PROCEED NORTH ALONG BRANCH AVE FOR 0.1 MI
 HV9933'(0.2 KM) TO THE STATION IN THE MEDIAN.
 HV9933'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9933'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9933'T.S. 20421 PG.  THE DISK IS LOCATED 85.8 FT (26.2 M) NORTH OF THE
 HV9933'SIGN BRANDYWINE ROAD, 8.5 FT (2.6 M) NORTHEAST OF THE EDGE OF
 HV9933'PAVEMENT OF THE SOUTH-BOUND LANE OF BRANCH AVE, 27.5 FT (8.4 M)
 HV9933'SOUTHWEST OF THE EDGE OF THE PAVEMENT OF THE NORTH-BOUND LANE OF
 HV9933'BRANCH AVE, AND 1.3 FT (0.4 M) NORTH OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9934 ***********************************************************************
 HV9934  DESIGNATION -  20422
 HV9934  PID         -  HV9934
 HV9934  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9934  COUNTRY     -  US
 HV9934  USGS QUAD   -  PISCATAWAY (2016)
 HV9934
 HV9934                         *CURRENT SURVEY CONTROL
 HV9934  ______________________________________________________________________
 HV9934* NAD 83(2011) POSITION- 38 44 57.64218(N) 076 52 44.40186(W)   ADJUSTED
 HV9934* NAD 83(2011) ELLIP HT-    31.211 (meters)        (06/27/12)   ADJUSTED
 HV9934* NAD 83(2011) EPOCH   -  2010.00
 HV9934* NAVD 88 ORTHO HEIGHT -    63.8   (meters)      209.    (feet) GPS OBS
 HV9934  ______________________________________________________________________
 HV9934  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9934  GEOID HEIGHT    -        -33.030 (meters)                     GEOID93
 HV9934  GEOID HEIGHT    -        -32.668 (meters)                     GEOID18
 HV9934  NAD 83(2011) X  -  1,130,686.345 (meters)                     COMP
 HV9934  NAD 83(2011) Y  - -4,850,780.785 (meters)                     COMP
 HV9934  NAD 83(2011) Z  -  3,970,673.475 (meters)                     COMP
 HV9934  LAPLACE CORR    -         -5.46  (seconds)                    DEFLEC18
 HV9934
 HV9934  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9934  Standards:
 HV9934         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9934            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9934  -------------------------------------------------------------------
 HV9934  NETWORK    1.09   2.27           0.44   0.45   1.16      0.07219203
 HV9934  -------------------------------------------------------------------
 HV9934  Click here for local accuracies and other accuracy information.
 HV9934
 HV9934.The horizontal coordinates were established by GPS observations
 HV9934.and adjusted by the National Geodetic Survey in June 2012.
 HV9934
 HV9934.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9934.been affixed to the stable North American tectonic plate. See 
 HV9934.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9934
 HV9934.The horizontal coordinates are valid at the epoch date displayed above
 HV9934.which is a decimal equivalence of Year/Month/Day.
 HV9934
 HV9934.The orthometric height was determined by GPS observations and a
 HV9934.high-resolution geoid model.
 HV9934
 HV9934.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9934.GEOID18 height accuracy estimate available here.
 HV9934
 HV9934.Click photographs - Photos may exist for this station.
 HV9934
 HV9934.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9934
 HV9934.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9934
 HV9934.The ellipsoidal height was determined by GPS observations
 HV9934.and is referenced to NAD 83.
 HV9934
 HV9934. The following values were computed from the NAD 83(2011) position.
 HV9934
 HV9934;                    North         East     Units Scale Factor Converg.
 HV9934;SPC MD       -   120,188.571   410,518.126   MT  0.99995227   +0 04 33.4
 HV9934;SPC MD       -   394,318.67  1,346,841.55   sFT  0.99995227   +0 04 33.4
 HV9934;UTM  18      - 4,290,637.919   336,715.144   MT  0.99992833   -1 10 34.9
 HV9934
 HV9934!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9934!SPC MD       -   0.99999510  x   0.99995227  =   0.99994737
 HV9934!UTM  18      -   0.99999510  x   0.99992833  =   0.99992343
 HV9934
 HV9934_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3671590637(NAD 83)
 HV9934
 HV9934                          SUPERSEDED SURVEY CONTROL
 HV9934
 HV9934  NAD 83(2007)-  38 44 57.64245(N)    076 52 44.40297(W) AD(2002.00) 0
 HV9934  ELLIP H (02/10/07)   31.178  (m)                       GP(2002.00)    
 HV9934  ELLIP H (08/30/02)   31.174  (m)                       GP(       ) 4 2
 HV9934  NAD 83(1993)-  38 44 57.64233(N)    076 52 44.40331(W) AD(       ) 1
 HV9934  ELLIP H (11/14/94)   31.205  (m)                       GP(       ) 4 2
 HV9934  ELLIP H (09/09/94)   31.190  (m)                       GP(       ) 4 1
 HV9934  NAD 83(1991)-  38 44 57.64212(N)    076 52 44.40369(W) AD(       ) 1
 HV9934
 HV9934.Superseded values are not recommended for survey control.
 HV9934
 HV9934.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9934.See file dsdata.pdf to determine how the superseded data were derived.
 HV9934
 HV9934_MARKER: DD = SURVEY DISK
 HV9934_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9934_STAMPING: T.S. 20422 PG
 HV9934_MARK LOGO: WSSC
 HV9934_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9934_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9934+STABILITY: SURFACE MOTION
 HV9934_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9934+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2012
 HV9934
 HV9934  HISTORY     - Date     Condition        Report By
 HV9934  HISTORY     - 1993     MONUMENTED       MSI
 HV9934  HISTORY     - 20120923 GOOD             WOOLPT
 HV9934
 HV9934                          STATION DESCRIPTION
 HV9934
 HV9934'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9934'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9934'APPROXIMATELY 1.4 MI (2.3 KM) SOUTHWEST OF THE TOWN OF CLINTON.  TO
 HV9934'REACH THE STATION FROM THE INTERSECTION OF BRANCH AVE (S.R. 5) AND
 HV9934'SURRATTS ROAD, PROCEED EAST ALONG SURRATTS ROAD FOR 0.05 MI
 HV9934'(0.08 KM) TO THE ENTRANCE OF THE COLONY SOUTH HOTEL.  TURN SOUTH INTO
 HV9934'THE DRIVEWAY AND GO UP THE DRIVEWAY TO THE CREST OF THE PARKING AREA.
 HV9934'THE STATION IS ON THE WEST SIDE OF THE DRIVEWAY AT THE CREST OF THE
 HV9934'HILL.
 HV9934'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9934'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9934'T.S. 20422 PG.  THE DISK IS LOCATED 2.9 FT (0.9 M) WEST OF THE EDGE
 HV9934'OF THE CURB, 5.3 FT (1.6 M) NORTH OF THE EDGE OF A CONCRETE STORM
 HV9934'SEWER, AND 7.1 FT (2.2 M) NORTHEAST OF THE NORTHWEST CORNER OF A
 HV9934'CONCRETE STORM SEWER.
 HV9934
 HV9934                          STATION RECOVERY (2012)
 HV9934
 HV9934'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 HV9934'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9935 ***********************************************************************
 HV9935  DESIGNATION -  20423
 HV9935  PID         -  HV9935
 HV9935  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9935  COUNTRY     -  US
 HV9935  USGS QUAD   -  PISCATAWAY (2016)
 HV9935
 HV9935                         *CURRENT SURVEY CONTROL
 HV9935  ______________________________________________________________________
 HV9935* NAD 83(2011) POSITION- 38 44 24.81465(N) 076 54 25.24120(W)   ADJUSTED
 HV9935* NAD 83(2011) ELLIP HT-    41.811 (meters)        (06/27/12)   ADJUSTED
 HV9935* NAD 83(2011) EPOCH   -  2010.00
 HV9935* NAVD 88 ORTHO HEIGHT -    74.4   (meters)      244.    (feet) GPS OBS
 HV9935  ______________________________________________________________________
 HV9935  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9935  GEOID HEIGHT    -        -32.980 (meters)                     GEOID93
 HV9935  GEOID HEIGHT    -        -32.614 (meters)                     GEOID18
 HV9935  NAD 83(2011) X  -  1,128,460.136 (meters)                     COMP
 HV9935  NAD 83(2011) Y  - -4,851,958.102 (meters)                     COMP
 HV9935  NAD 83(2011) Z  -  3,969,890.586 (meters)                     COMP
 HV9935  LAPLACE CORR    -         -5.18  (seconds)                    DEFLEC18
 HV9935
 HV9935  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9935  Standards:
 HV9935         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9935            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9935  -------------------------------------------------------------------
 HV9935  NETWORK    1.15   2.43           0.47   0.47   1.24      0.03830701
 HV9935  -------------------------------------------------------------------
 HV9935  Click here for local accuracies and other accuracy information.
 HV9935
 HV9935.The horizontal coordinates were established by GPS observations
 HV9935.and adjusted by the National Geodetic Survey in June 2012.
 HV9935
 HV9935.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9935.been affixed to the stable North American tectonic plate. See 
 HV9935.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9935
 HV9935.The horizontal coordinates are valid at the epoch date displayed above
 HV9935.which is a decimal equivalence of Year/Month/Day.
 HV9935
 HV9935.The orthometric height was determined by GPS observations and a
 HV9935.high-resolution geoid model.
 HV9935
 HV9935.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9935.GEOID18 height accuracy estimate available here.
 HV9935
 HV9935.Click photographs - Photos may exist for this station.
 HV9935
 HV9935.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9935
 HV9935.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9935
 HV9935.The ellipsoidal height was determined by GPS observations
 HV9935.and is referenced to NAD 83.
 HV9935
 HV9935. The following values were computed from the NAD 83(2011) position.
 HV9935
 HV9935;                    North         East     Units Scale Factor Converg.
 HV9935;SPC MD       -   119,173.487   408,084.252   MT  0.99995263   +0 03 30.1
 HV9935;SPC MD       -   390,988.35  1,338,856.42   sFT  0.99995263   +0 03 30.1
 HV9935;UTM  18      - 4,289,676.282   334,259.716   MT  0.99993828   -1 11 37.2
 HV9935
 HV9935!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9935!SPC MD       -   0.99999344  x   0.99995263  =   0.99994607
 HV9935!UTM  18      -   0.99999344  x   0.99993828  =   0.99993172
 HV9935
 HV9935_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3425989676(NAD 83)
 HV9935
 HV9935                          SUPERSEDED SURVEY CONTROL
 HV9935
 HV9935  NAD 83(2007)-  38 44 24.81499(N)    076 54 25.24226(W) AD(2002.00) 0
 HV9935  ELLIP H (02/10/07)   41.788  (m)                       GP(2002.00)    
 HV9935  ELLIP H (08/30/02)   41.788  (m)                       GP(       ) 4 2
 HV9935  NAD 83(1993)-  38 44 24.81479(N)    076 54 25.24261(W) AD(       ) 1
 HV9935  ELLIP H (11/14/94)   41.818  (m)                       GP(       ) 4 2
 HV9935  ELLIP H (09/09/94)   41.811  (m)                       GP(       ) 4 1
 HV9935  NAD 83(1991)-  38 44 24.81448(N)    076 54 25.24304(W) AD(       ) 1
 HV9935
 HV9935.Superseded values are not recommended for survey control.
 HV9935
 HV9935.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9935.See file dsdata.pdf to determine how the superseded data were derived.
 HV9935
 HV9935_MARKER: DD = SURVEY DISK
 HV9935_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9935_STAMPING: T.S. 20423 PG
 HV9935_MARK LOGO: WSSC
 HV9935_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9935_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9935+STABILITY: SURFACE MOTION
 HV9935_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9935+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9935
 HV9935  HISTORY     - Date     Condition        Report By
 HV9935  HISTORY     - 1993     MONUMENTED       MSI
 HV9935
 HV9935                          STATION DESCRIPTION
 HV9935
 HV9935'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9935'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9935'APPROXIMATELY 2.3 MI (3.7 KM) SOUTHWEST OF THE TOWN OF CLINTON.  TO
 HV9935'REACH THE STATION FROM THE INTERSECTION OF BRANCH AVE (S.R.5) AND
 HV9935'WOODYARD ROAD, PROCEED 0.8 MI (1.3 KM) WEST ALONG WOODYARD ROAD UNTIL
 HV9935'THE INTERSECTION OF WOODYARD ROAD AND BRANDYWINE ROAD.  TURN LEFT AND
 HV9935'GO SOUTH ALONG BRANDYWINE ROAD FOR 1.0 MI (1.6 KM) UNTIL THE
 HV9935'INTERSECTION OF BRANDYWINE ROAD AND THRIFT ROAD.  TURN RIGHT AND GO
 HV9935'SOUTHWEST ALONG THRIFT ROAD FOR 0.9 MI (1.4 KM) TO AN ASHPALT
 HV9935'ENTRANCE TO THE ATHLETIC FIELDS.  TURN RIGHT INTO THE DRIVEWAY AND
 HV9935'DRIVE INTO THE PARKING AREA AND THE STATION IS LOCATED BETWEEN THE
 HV9935'PARKING AREA AND THE DRIVEWAY.
 HV9935'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9935'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9935'T.S. 20423 PG.  THE DISK IS LOCATED 51.6 FT (15.7 M) NORTHWEST OF A
 HV9935'POST AND RAIL FENCE, 82.2 FT (25.1 M) SOUTHWEST OF THE SOUTHEAST
 HV9935'CORNER OF THE PAVED PARKING AREA AND 50.7 FT (15.5 M) SOUTHEAST OF
 HV9935'THE SOUTHWEST CORNER OF PAVED PARKING AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9936 ***********************************************************************
 HV9936  DESIGNATION -  20424
 HV9936  PID         -  HV9936
 HV9936  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9936  COUNTRY     -  US
 HV9936  USGS QUAD   -  PISCATAWAY (2016)
 HV9936
 HV9936                         *CURRENT SURVEY CONTROL
 HV9936  ______________________________________________________________________
 HV9936* NAD 83(2011) POSITION- 38 44 55.15999(N) 076 55 55.18181(W)   ADJUSTED
 HV9936* NAD 83(2011) ELLIP HT-    42.939 (meters)        (06/27/12)   ADJUSTED
 HV9936* NAD 83(2011) EPOCH   -  2010.00
 HV9936* NAVD 88 ORTHO HEIGHT -    75.5   (meters)      248.    (feet) GPS OBS
 HV9936  ______________________________________________________________________
 HV9936  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9936  GEOID HEIGHT    -        -32.900 (meters)                     GEOID93
 HV9936  GEOID HEIGHT    -        -32.531 (meters)                     GEOID18
 HV9936  NAD 83(2011) X  -  1,126,212.143 (meters)                     COMP
 HV9936  NAD 83(2011) Y  - -4,851,880.090 (meters)                     COMP
 HV9936  NAD 83(2011) Z  -  3,970,621.121 (meters)                     COMP
 HV9936  LAPLACE CORR    -         -4.22  (seconds)                    DEFLEC18
 HV9936
 HV9936  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9936  Standards:
 HV9936         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9936            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9936  -------------------------------------------------------------------
 HV9936  NETWORK    1.25   2.59           0.51   0.51   1.32     -0.02964218
 HV9936  -------------------------------------------------------------------
 HV9936  Click here for local accuracies and other accuracy information.
 HV9936
 HV9936.This mark is at Washington Exec/hyde Field Airport (W32)
 HV9936
 HV9936.The horizontal coordinates were established by GPS observations
 HV9936.and adjusted by the National Geodetic Survey in June 2012.
 HV9936
 HV9936.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9936.been affixed to the stable North American tectonic plate. See 
 HV9936.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9936
 HV9936.The horizontal coordinates are valid at the epoch date displayed above
 HV9936.which is a decimal equivalence of Year/Month/Day.
 HV9936
 HV9936.The orthometric height was determined by GPS observations and a
 HV9936.high-resolution geoid model.
 HV9936
 HV9936.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9936.GEOID18 height accuracy estimate available here.
 HV9936
 HV9936.Click photographs - Photos may exist for this station.
 HV9936
 HV9936.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9936
 HV9936.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9936
 HV9936.The ellipsoidal height was determined by GPS observations
 HV9936.and is referenced to NAD 83.
 HV9936
 HV9936. The following values were computed from the NAD 83(2011) position.
 HV9936
 HV9936;                    North         East     Units Scale Factor Converg.
 HV9936;SPC MD       -   120,107.265   405,911.536   MT  0.99995230   +0 02 33.7
 HV9936;SPC MD       -   394,051.92  1,331,728.10   sFT  0.99995230   +0 02 33.7
 HV9936;UTM  18      - 4,290,657.304   332,107.945   MT  0.99994712   -1 12 34.3
 HV9936
 HV9936!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9936!SPC MD       -   0.99999326  x   0.99995230  =   0.99994556
 HV9936!UTM  18      -   0.99999326  x   0.99994712  =   0.99994038
 HV9936
 HV9936_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3210790657(NAD 83)
 HV9936
 HV9936                          SUPERSEDED SURVEY CONTROL
 HV9936
 HV9936  NAD 83(2007)-  38 44 55.16035(N)    076 55 55.18278(W) AD(2002.00) 0
 HV9936  ELLIP H (02/10/07)   42.924  (m)                       GP(2002.00)    
 HV9936  ELLIP H (08/30/02)   42.924  (m)                       GP(       ) 4 2
 HV9936  NAD 83(1993)-  38 44 55.16022(N)    076 55 55.18318(W) AD(       ) 1
 HV9936  ELLIP H (11/14/94)   42.947  (m)                       GP(       ) 4 2
 HV9936  ELLIP H (09/09/94)   42.942  (m)                       GP(       ) 4 1
 HV9936  NAD 83(1991)-  38 44 55.15990(N)    076 55 55.18353(W) AD(       ) 1
 HV9936
 HV9936.Superseded values are not recommended for survey control.
 HV9936
 HV9936.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9936.See file dsdata.pdf to determine how the superseded data were derived.
 HV9936
 HV9936_MARKER: DD = SURVEY DISK
 HV9936_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9936_STAMPING: T.S. 20424 PG
 HV9936_MARK LOGO: WSSC
 HV9936_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9936_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9936+STABILITY: SURFACE MOTION
 HV9936_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9936+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9936
 HV9936  HISTORY     - Date     Condition        Report By
 HV9936  HISTORY     - 1993     MONUMENTED       MSI
 HV9936
 HV9936                          STATION DESCRIPTION
 HV9936
 HV9936'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9936'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9936'APPROXIMATELY 2.3 MI (3.7 KM) SOUTHWEST OF THE TOWN OF CLINTON.  TO
 HV9936'REACH THE STATION FROM THE INTERSECTION OF BRANCH AVE (S.R.5) AND
 HV9936'PISCATAWAY ROAD, PROCEED WEST ALONG PISCATAWAY ROAD FOR 3.1 MI
 HV9936'(5.0 KM) TO THE ENTRANCE OF HYDE FIELD.  TURN RIGHT AND WEST INTO
 HV9936'ASHPALT PLANE PARKING AREA AND DRIVE TOWARDS THE RUNWAY, CROSSING THE
 HV9936'TAXI-WAY FOR 0.2 MI (0.3 KM) TO THE STATION.  THE STATION IS LOCATED
 HV9936'IN THE GRASS BETWEEN THE TAXI-WAY AND THE RUNWAY.
 HV9936'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9936'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9936'T.S. 20424 PG.  THE DISK IS LOCATED 52.5 FT (16.0 M) SOUTHEAST OF
 HV9936'THE EDGE OF THE PAVEMENT OF THE RUNWAY, 34.7 FT (10.6 M) NORTHWEST OF
 HV9936'THE CENTERLINE OF THE TAXIWAY, 11.7 FT (3.6 M)  NORTHWEST OF A
 HV9936'BLUE-WHITE MARKER BESIDE THE TAXI-WAY, 84.5 FT (25.8 M) EAST OF A
 HV9936'YELLOW LIGHT MARKER BESIDE THE RUNWAY AND 174.3 FT (53.1 M) NORTH OF
 HV9936'THE NORTHWEST POST UPHOLDING THE NORTH END OF THE ROOF OF THE PLANE
 HV9936'PARKING AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9937 ***********************************************************************
 HV9937  DESIGNATION -  20425
 HV9937  PID         -  HV9937
 HV9937  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9937  COUNTRY     -  US
 HV9937  USGS QUAD   -  PISCATAWAY (2016)
 HV9937
 HV9937                         *CURRENT SURVEY CONTROL
 HV9937  ______________________________________________________________________
 HV9937* NAD 83(2011) POSITION- 38 44 49.65820(N) 076 57 30.21213(W)   ADJUSTED
 HV9937* NAD 83(2011) ELLIP HT-     0.804 (meters)        (06/27/12)   ADJUSTED
 HV9937* NAD 83(2011) EPOCH   -  2010.00
 HV9937* NAVD 88 ORTHO HEIGHT -    33.3   (meters)      109.    (feet) GPS OBS
 HV9937  ______________________________________________________________________
 HV9937  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9937  GEOID HEIGHT    -        -32.850 (meters)                     GEOID93
 HV9937  GEOID HEIGHT    -        -32.479 (meters)                     GEOID18
 HV9937  NAD 83(2011) X  -  1,123,993.212 (meters)                     COMP
 HV9937  NAD 83(2011) Y  - -4,852,469.877 (meters)                     COMP
 HV9937  NAD 83(2011) Z  -  3,970,462.433 (meters)                     COMP
 HV9937  LAPLACE CORR    -         -3.87  (seconds)                    DEFLEC18
 HV9937
 HV9937  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9937  Standards:
 HV9937         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9937            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9937  -------------------------------------------------------------------
 HV9937  NETWORK    1.22   2.63           0.51   0.49   1.34      0.10601003
 HV9937  -------------------------------------------------------------------
 HV9937  Click here for local accuracies and other accuracy information.
 HV9937
 HV9937.The horizontal coordinates were established by GPS observations
 HV9937.and adjusted by the National Geodetic Survey in June 2012.
 HV9937
 HV9937.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9937.been affixed to the stable North American tectonic plate. See 
 HV9937.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9937
 HV9937.The horizontal coordinates are valid at the epoch date displayed above
 HV9937.which is a decimal equivalence of Year/Month/Day.
 HV9937
 HV9937.The orthometric height was determined by GPS observations and a
 HV9937.high-resolution geoid model.
 HV9937
 HV9937.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9937.GEOID18 height accuracy estimate available here.
 HV9937
 HV9937.Click photographs - Photos may exist for this station.
 HV9937
 HV9937.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9937
 HV9937.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9937
 HV9937.The ellipsoidal height was determined by GPS observations
 HV9937.and is referenced to NAD 83.
 HV9937
 HV9937. The following values were computed from the NAD 83(2011) position.
 HV9937
 HV9937;                    North         East     Units Scale Factor Converg.
 HV9937;SPC MD       -   119,936.240   403,616.951   MT  0.99995236   +0 01 34.0
 HV9937;SPC MD       -   393,490.81  1,324,199.95   sFT  0.99995236   +0 01 34.0
 HV9937;SPC VA N     - 2,121,055.367 3,634,005.099   MT  0.99995094   +0 57 43.7
 HV9937;SPC VA N     - 6,958,829.15 11,922,565.06   sFT  0.99995094   +0 57 43.7
 HV9937;UTM  18      - 4,290,536.464   329,810.171   MT  0.99995668   -1 13 33.7
 HV9937
 HV9937!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9937!SPC MD       -   0.99999987  x   0.99995236  =   0.99995223
 HV9937!SPC VA N     -   0.99999987  x   0.99995094  =   0.99995081
 HV9937!UTM  18      -   0.99999987  x   0.99995668  =   0.99995655
 HV9937
 HV9937_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2981090536(NAD 83)
 HV9937
 HV9937                          SUPERSEDED SURVEY CONTROL
 HV9937
 HV9937  NAD 83(2007)-  38 44 49.65860(N)    076 57 30.21305(W) AD(2002.00) 0
 HV9937  ELLIP H (02/10/07)    0.795  (m)                       GP(2002.00)    
 HV9937  ELLIP H (08/30/02)    0.797  (m)                       GP(       ) 4 2
 HV9937  NAD 83(1993)-  38 44 49.65845(N)    076 57 30.21351(W) AD(       ) 1
 HV9937  ELLIP H (11/14/94)    0.821  (m)                       GP(       ) 4 2
 HV9937  ELLIP H (09/09/94)    0.818  (m)                       GP(       ) 4 1
 HV9937  NAD 83(1991)-  38 44 49.65799(N)    076 57 30.21388(W) AD(       ) 1
 HV9937
 HV9937.Superseded values are not recommended for survey control.
 HV9937
 HV9937.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9937.See file dsdata.pdf to determine how the superseded data were derived.
 HV9937
 HV9937_MARKER: DD = SURVEY DISK
 HV9937_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9937_STAMPING: T.S. 20425 PG
 HV9937_MARK LOGO: WSSC
 HV9937_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9937_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9937+STABILITY: SURFACE MOTION
 HV9937_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9937+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9937
 HV9937  HISTORY     - Date     Condition        Report By
 HV9937  HISTORY     - 1993     MONUMENTED       MSI
 HV9937
 HV9937                          STATION DESCRIPTION
 HV9937
 HV9937'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9937'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9937'APPROXIMATELY 3.7 MI (6.0 KM) NORTHEAST OF THE TOWN OF TANTALLON.  TO
 HV9937'REACH THE STATION FROM THE INTERSECTION OF INDIAN HEAD HIGHWAY
 HV9937'(S.R.210) AND FORT ROAD NORTH, PROCEED SOUTHEAST ALONG FORT ROAD
 HV9937'NORTH FOR 0.9 MI (1.4 KM) UNTIL THE INTERSECTION OF FORT ROAD NORTH
 HV9937'AND ALLENTOWN ROAD.  TURN LEFT AND GO NORTHEAST ALONG ALLENTOWN ROAD
 HV9937'FOR 0.7 MI (1.1 KM) UNTIL THE INTERSECTION OF ALLENTOWN ROAD AND OLD
 HV9937'ALLENTOWN ROAD.  TURN RIGHT AND GO NORTHEAST ALONG OLD ALLENTOWN ROAD
 HV9937'FOR 0.2 MI (0.3 KM) UNTIL THE INTERSECTION OF OLD ALLENTOWN ROAD AND
 HV9937'AIRPORT DRIVE.  TURN RIGHT AND GO EAST ALONG AIRPORT DRIVE FOR 0.15
 HV9937'MI (0.24 KM) UNTIL THE INTERSECTION OF AIRPORT DRIVE AND GLEN WAY.
 HV9937'TURN RIGHT AND GO SOUTH ALONG GLEN WAY FOR 0.4 MI (0.6 KM) TO THE
 HV9937'ENTRANCE. CONTINUE FOR ANOTHER 0.4 MI (0.6 KM) TO THE STATION.  THE
 HV9937'STATION IS LOCATED IN THE GRASS AT THE WEST END OF THE RUNWAY, IN
 HV9937'BETWEEN THE TAXI-WAY AND THE RUNWAY.
 HV9937'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9937'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9937'T.S. 20425 PG.  THE DISK IS LOCATED 34.5 FT (10.5 M) NORTHWEST OF
 HV9937'THE EDGE OF THE RUNWAY, 30.0 FT (9.1 M) SOUTHEAST OF THE EDGE OF THE
 HV9937'PAVEMENT OF THE TAXI-WAY, 25.0 FT (7.6 M) NORTHEAST OF THE EDGE OF
 HV9937'THE PAVEMENT JOINING THE TAXI-WAY AND THE RUNWAY, AND 17.8 FT
 HV9937'(5.4 M) NORTHEAST OF A RUNWAY LIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9938 ***********************************************************************
 HV9938  DESIGNATION -  20426
 HV9938  PID         -  HV9938
 HV9938  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9938  COUNTRY     -  US
 HV9938  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9938
 HV9938                         *CURRENT SURVEY CONTROL
 HV9938  ______________________________________________________________________
 HV9938* NAD 83(2011) POSITION- 38 55 56.12576(N) 076 57 20.98420(W)   ADJUSTED
 HV9938* NAD 83(2011) ELLIP HT-   -11.880 (meters)        (06/27/12)   ADJUSTED
 HV9938* NAD 83(2011) EPOCH   -  2010.00
 HV9938* NAVD 88 ORTHO HEIGHT -    20.3   (meters)       67.    (feet) GPS OBS
 HV9938  ______________________________________________________________________
 HV9938  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9938  GEOID HEIGHT    -        -32.520 (meters)                     GEOID93
 HV9938  GEOID HEIGHT    -        -32.157 (meters)                     GEOID18
 HV9938  NAD 83(2011) X  -  1,121,299.028 (meters)                     COMP
 HV9938  NAD 83(2011) Y  - -4,839,853.682 (meters)                     COMP
 HV9938  NAD 83(2011) Z  -  3,986,462.265 (meters)                     COMP
 HV9938  LAPLACE CORR    -         -4.85  (seconds)                    DEFLEC18
 HV9938
 HV9938  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9938  Standards:
 HV9938         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9938            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9938  -------------------------------------------------------------------
 HV9938  NETWORK    1.74   3.49           0.76   0.64   1.78      0.23287827
 HV9938  -------------------------------------------------------------------
 HV9938  Click here for local accuracies and other accuracy information.
 HV9938
 HV9938.The horizontal coordinates were established by GPS observations
 HV9938.and adjusted by the National Geodetic Survey in June 2012.
 HV9938
 HV9938.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9938.been affixed to the stable North American tectonic plate. See 
 HV9938.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9938
 HV9938.The horizontal coordinates are valid at the epoch date displayed above
 HV9938.which is a decimal equivalence of Year/Month/Day.
 HV9938
 HV9938.The orthometric height was determined by GPS observations and a
 HV9938.high-resolution geoid model.
 HV9938
 HV9938.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9938.GEOID18 height accuracy estimate available here.
 HV9938
 HV9938.Click photographs - Photos may exist for this station.
 HV9938
 HV9938.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9938
 HV9938.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9938
 HV9938.The ellipsoidal height was determined by GPS observations
 HV9938.and is referenced to NAD 83.
 HV9938
 HV9938. The following values were computed from the NAD 83(2011) position.
 HV9938
 HV9938;                    North         East     Units Scale Factor Converg.
 HV9938;SPC MD       -   140,487.041   403,829.835   MT  0.99995033   +0 01 39.8
 HV9938;SPC MD       -   460,914.57  1,324,898.38   sFT  0.99995033   +0 01 39.8
 HV9938;SPC VA N     - 2,141,607.023 3,633,882.236   MT  0.99996344   +0 57 49.5
 HV9938;SPC VA N     - 7,026,255.71 11,922,161.97   sFT  0.99996344   +0 57 49.5
 HV9938;UTM  18      - 4,311,077.776   330,472.971   MT  0.99995390   -1 13 45.6
 HV9938
 HV9938!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9938!SPC MD       -   1.00000186  x   0.99995033  =   0.99995219
 HV9938!SPC VA N     -   1.00000186  x   0.99996344  =   0.99996530
 HV9938!UTM  18      -   1.00000186  x   0.99995390  =   0.99995576
 HV9938
 HV9938_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3047211077(NAD 83)
 HV9938
 HV9938                          SUPERSEDED SURVEY CONTROL
 HV9938
 HV9938  NAD 83(2007)-  38 55 56.12618(N)    076 57 20.98499(W) AD(2002.00) 0
 HV9938  ELLIP H (02/10/07)  -11.858  (m)                       GP(2002.00)    
 HV9938  ELLIP H (08/30/02)  -11.861  (m)                       GP(       ) 4 2
 HV9938  ELLIP H (09/09/94)  -11.911  (m)                       GP(       ) 4 1
 HV9938  NAD 83(1991)-  38 55 56.12633(N)    076 57 20.98543(W) AD(       ) 1
 HV9938
 HV9938.Superseded values are not recommended for survey control.
 HV9938
 HV9938.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9938.See file dsdata.pdf to determine how the superseded data were derived.
 HV9938
 HV9938_MARKER: DD = SURVEY DISK
 HV9938_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9938_STAMPING: T.S. 20426 PG
 HV9938_MARK LOGO: WSSC
 HV9938_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9938_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9938+STABILITY: SURFACE MOTION
 HV9938_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9938+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9938
 HV9938  HISTORY     - Date     Condition        Report By
 HV9938  HISTORY     - 1993     MONUMENTED       MSI
 HV9938  HISTORY     - 20090825 MARK NOT FOUND   JMTMD
 HV9938
 HV9938                          STATION DESCRIPTION
 HV9938
 HV9938'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9938'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, IN THE TOWN
 HV9938'OF BRENTWOOD.  TO REACH THE STATION FROM THE INTERSECTION OF RHODE
 HV9938'ISLAND AVENUE (U.S.1) AND 38TH AVENUE, PROCEED SOUTHEAST ALONG 38TH
 HV9938'AVENUE FOR 0.4 MI (0.6 KM) UNTIL THE INTERSECTION OF 38TH AVENUE AND
 HV9938'BLADENSBURG ROAD.  TURN RIGHT AND GO SOUTHWEST ALONG BLADENSBURG ROAD
 HV9938'FOR 0.3 MI (0.5 KM) TO THE STATION ON THE RIGHT AND ON THE NORTH SIDE
 HV9938'OF BLADENSBURG ROAD. THE STATION IS LOCATED ACROSS THE ROAD FROM THE
 HV9938'ENTRANCE OF THE FORT LINCOLN CEMETERY AND FUNERAL HOME.
 HV9938'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9938'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9938'T.S. 20426 PG.  THE DISK IS LOCATED 29.5 FT (9.0 M) SOUTH OF POWER
 HV9938'POLE (PEPCO 812400-4514), 35.6 FT (10.9 M) NORTH OF POWER POLE (PEPCO
 HV9938'812400-4911), AND 20.8 FT (6.3 M) SOUTHWEST OF THE GUY WIRE TO POWER
 HV9938'POLE (812400-4514).
 HV9938
 HV9938                          STATION RECOVERY (2009)
 HV9938
 HV9938'RECOVERY NOTE BY JMT ENGINEERING 2009 (CJH)
 HV9938'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7163 ***********************************************************************
 JV7163  DESIGNATION -  20427
 JV7163  PID         -  JV7163
 JV7163  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7163  COUNTRY     -  US
 JV7163  USGS QUAD   -  BELTSVILLE (2016)
 JV7163
 JV7163                         *CURRENT SURVEY CONTROL
 JV7163  ______________________________________________________________________
 JV7163* NAD 83(2011) POSITION- 39 00 41.37493(N) 076 57 39.92406(W)   ADJUSTED
 JV7163* NAD 83(2011) ELLIP HT-    46.049 (meters)        (06/27/12)   ADJUSTED
 JV7163* NAD 83(2011) EPOCH   -  2010.00
 JV7163* NAVD 88 ORTHO HEIGHT -    78.1   (meters)      256.    (feet) GPS OBS
 JV7163  ______________________________________________________________________
 JV7163  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7163  GEOID HEIGHT    -        -32.430 (meters)                     GEOID93
 JV7163  GEOID HEIGHT    -        -32.066 (meters)                     GEOID18
 JV7163  NAD 83(2011) X  -  1,119,616.597 (meters)                     COMP
 JV7163  NAD 83(2011) Y  - -4,834,610.748 (meters)                     COMP
 JV7163  NAD 83(2011) Z  -  3,993,337.494 (meters)                     COMP
 JV7163  LAPLACE CORR    -         -3.36  (seconds)                    DEFLEC18
 JV7163
 JV7163  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7163  Standards:
 JV7163         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7163            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7163  -------------------------------------------------------------------
 JV7163  NETWORK    1.15   2.45           0.49   0.45   1.25      0.09741182
 JV7163  -------------------------------------------------------------------
 JV7163  Click here for local accuracies and other accuracy information.
 JV7163
 JV7163.The horizontal coordinates were established by GPS observations
 JV7163.and adjusted by the National Geodetic Survey in June 2012.
 JV7163
 JV7163.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7163.been affixed to the stable North American tectonic plate. See 
 JV7163.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7163
 JV7163.The horizontal coordinates are valid at the epoch date displayed above
 JV7163.which is a decimal equivalence of Year/Month/Day.
 JV7163
 JV7163.The orthometric height was determined by GPS observations and a
 JV7163.high-resolution geoid model.
 JV7163
 JV7163.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7163.GEOID18 height accuracy estimate available here.
 JV7163
 JV7163.Click photographs - Photos may exist for this station.
 JV7163
 JV7163.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7163
 JV7163.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7163
 JV7163.The ellipsoidal height was determined by GPS observations
 JV7163.and is referenced to NAD 83.
 JV7163
 JV7163. The following values were computed from the NAD 83(2011) position.
 JV7163
 JV7163;                    North         East     Units Scale Factor Converg.
 JV7163;SPC MD       -   149,282.772   403,369.927   MT  0.99995264   +0 01 27.9
 JV7163;SPC MD       -   489,771.89  1,323,389.50   sFT  0.99995264   +0 01 27.9
 JV7163;UTM  18      - 4,319,881.512   330,206.296   MT  0.99995500   -1 14 05.1
 JV7163
 JV7163!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7163!SPC MD       -   0.99999278  x   0.99995264  =   0.99994542
 JV7163!UTM  18      -   0.99999278  x   0.99995500  =   0.99994778
 JV7163
 JV7163_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3020619881(NAD 83)
 JV7163
 JV7163                          SUPERSEDED SURVEY CONTROL
 JV7163
 JV7163  NAD 83(2007)-  39 00 41.37523(N)    076 57 39.92489(W) AD(2002.00) 0
 JV7163  ELLIP H (02/10/07)   46.077  (m)                       GP(2002.00)    
 JV7163  ELLIP H (08/30/02)   46.084  (m)                       GP(       ) 4 2
 JV7163  ELLIP H (09/09/94)   46.009  (m)                       GP(       ) 4 1
 JV7163  NAD 83(1991)-  39 00 41.37516(N)    076 57 39.92505(W) AD(       ) 1
 JV7163
 JV7163.Superseded values are not recommended for survey control.
 JV7163
 JV7163.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7163.See file dsdata.pdf to determine how the superseded data were derived.
 JV7163
 JV7163_MARKER: DD = SURVEY DISK
 JV7163_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7163_STAMPING: T.S. 20427 PG
 JV7163_MARK LOGO: WSSC
 JV7163_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7163_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7163+STABILITY: SURFACE MOTION
 JV7163_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7163+SATELLITE: SATELLITE OBSERVATIONS - April 12, 2008
 JV7163
 JV7163  HISTORY     - Date     Condition        Report By
 JV7163  HISTORY     - 1993     MONUMENTED       MSI
 JV7163  HISTORY     - 20041227 GOOD             GEOCAC
 JV7163  HISTORY     - 20080412 GOOD             NGS
 JV7163
 JV7163                          STATION DESCRIPTION
 JV7163
 JV7163'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7163'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7163'APPROXIMATELY 1.4 MI (2.3 KM) SOUTHEAST OF THE TOWN OF HILLANDALE. TO
 JV7163'REACH THE STATION FROM THE INTERSECTION OF ADELPHI ROAD AND RIGGS
 JV7163'ROAD (S.R.212), PROCEED NORTH ALONG RIGGS ROAD FOR 0.4 MI (0.6 KM)
 JV7163'UNTIL THE INTERSECTION OF RIGGS ROAD AND BUCK LODGE ROAD.  TURN RIGHT
 JV7163'AND GO EAST ALONG BUCK LODGE ROAD FOR 0.3 MI (0.5 KM) TO THE STATION
 JV7163'ON THE RIGHT.  THE STATION IS LOCATED ON THE FRONT LAWN OF BUCK LODGE
 JV7163'MIDDLE SCHOOL.
 JV7163'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7163'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7163'T.S. 20427 PG.  THE DISK IS LOCATED 72.8 FT (22.2 M) SOUTHEAST OF
 JV7163'POWER POLE (PEPCO 80429-9006), 54.3 FT (16.6 M) SOUTH OF THE CURB
 JV7163'ALONG BUCK LODGE ROAD, AND 69.5 FT (21.2 M) NORTHWEST OF A LIGHT POLE
 JV7163'ON THE FRONT LAWN OF THE SCHOOL.
 JV7163
 JV7163                          STATION RECOVERY (2004)
 JV7163
 JV7163'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV7163'FOUND AS DESCRIBED AT 2611 BUCK LODGE ROAD. THE MARK IS IN THE LAWN IN
 JV7163'FRONT OF THE SCHOOL, ABOUT 18 FEET SOUTH OF A GRANITE SIGN.
 JV7163
 JV7163                          STATION RECOVERY (2008)
 JV7163
 JV7163'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7163'2004 RECOVERY IS INCORRECT.  MARK IS 5.33 M (17.5 FT) NNE OF THE EAST
 JV7163'COLUMN SUPPORTING THE GRANITE SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7164 ***********************************************************************
 JV7164  DESIGNATION -  20428
 JV7164  PID         -  JV7164
 JV7164  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7164  COUNTRY     -  US
 JV7164  USGS QUAD   -  LAUREL (2016)
 JV7164
 JV7164                         *CURRENT SURVEY CONTROL
 JV7164  ______________________________________________________________________
 JV7164* NAD 83(2011) POSITION- 39 01 16.65776(N) 076 49 37.86473(W)   ADJUSTED
 JV7164* NAD 83(2011) ELLIP HT-    17.321 (meters)        (06/27/12)   ADJUSTED
 JV7164* NAD 83(2011) EPOCH   -  2010.00
 JV7164* NAVD 88 ORTHO HEIGHT -    49.680 (meters)      162.99  (feet) ADJUSTED
 JV7164  ______________________________________________________________________
 JV7164  GEOID HEIGHT    -        -32.379 (meters)                     GEOID18
 JV7164  NAD 83(2011) X  -  1,130,751.263 (meters)                     COMP
 JV7164  NAD 83(2011) Y  - -4,831,292.221 (meters)                     COMP
 JV7164  NAD 83(2011) Z  -  3,994,164.784 (meters)                     COMP
 JV7164  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 JV7164  DYNAMIC HEIGHT  -         49.653 (meters)      162.90  (feet) COMP
 JV7164  MODELED GRAVITY -    980,090.5   (mgal)                       NAVD 88
 JV7164
 JV7164  VERT ORDER      -  SECOND    CLASS II
 JV7164
 JV7164  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7164  Standards:
 JV7164         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7164            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7164  -------------------------------------------------------------------
 JV7164  NETWORK    0.98   2.21           0.38   0.42   1.13      0.10905500
 JV7164  -------------------------------------------------------------------
 JV7164  Click here for local accuracies and other accuracy information.
 JV7164
 JV7164.The horizontal coordinates were established by GPS observations
 JV7164.and adjusted by the National Geodetic Survey in June 2012.
 JV7164
 JV7164.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7164.been affixed to the stable North American tectonic plate. See 
 JV7164.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7164
 JV7164.The horizontal coordinates are valid at the epoch date displayed above
 JV7164.which is a decimal equivalence of Year/Month/Day.
 JV7164
 JV7164.The orthometric height was determined by differential leveling and
 JV7164.adjusted by the NATIONAL GEODETIC SURVEY
 JV7164.in April 1999.
 JV7164
 JV7164.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7164.GEOID18 height accuracy estimate available here.
 JV7164
 JV7164.Click photographs - Photos may exist for this station.
 JV7164
 JV7164.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7164
 JV7164.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7164
 JV7164.The ellipsoidal height was determined by GPS observations
 JV7164.and is referenced to NAD 83.
 JV7164
 JV7164.The dynamic height is computed by dividing the NAVD 88
 JV7164.geopotential number by the normal gravity value computed on the
 JV7164.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7164.degrees latitude (g = 980.6199 gals.).
 JV7164
 JV7164.The modeled gravity was interpolated from observed gravity values.
 JV7164
 JV7164. The following values were computed from the NAD 83(2011) position.
 JV7164
 JV7164;                    North         East     Units Scale Factor Converg.
 JV7164;SPC MD       -   150,384.209   414,965.173   MT  0.99995306   +0 06 30.5
 JV7164;SPC MD       -   493,385.53  1,361,431.57   sFT  0.99995306   +0 06 30.5
 JV7164;UTM  18      - 4,320,727.865   341,822.695   MT  0.99990809   -1 09 02.3
 JV7164
 JV7164!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7164!SPC MD       -   0.99999728  x   0.99995306  =   0.99995034
 JV7164!UTM  18      -   0.99999728  x   0.99990809  =   0.99990537
 JV7164
 JV7164_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4182220727(NAD 83)
 JV7164
 JV7164|---------------------------------------------------------------------|
 JV7164| PID    Reference Object                     Distance      Geod. Az  |
 JV7164|                                                           dddmmss.s |
 JV7164| JV7173 GPS JPL 4005                         42.076 METERS 01156     |
 JV7164|---------------------------------------------------------------------|
 JV7164
 JV7164                          SUPERSEDED SURVEY CONTROL
 JV7164
 JV7164  NAD 83(2007)-  39 01 16.65799(N)    076 49 37.86549(W) AD(2002.00) 0
 JV7164  ELLIP H (02/10/07)   17.349  (m)                       GP(2002.00)    
 JV7164  ELLIP H (08/30/02)   17.374  (m)                       GP(       ) 4 2
 JV7164  ELLIP H (09/09/94)   17.282  (m)                       GP(       ) 4 1
 JV7164  NAD 83(1991)-  39 01 16.65799(N)    076 49 37.86552(W) AD(       ) 1
 JV7164  NAVD 88 (01/27/94)   49.7    (m)  GEOID93  model used  GPS OBS        
 JV7164
 JV7164.Superseded values are not recommended for survey control.
 JV7164
 JV7164.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7164.See file dsdata.pdf to determine how the superseded data were derived.
 JV7164
 JV7164_MARKER: DD = SURVEY DISK
 JV7164_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7164_STAMPING: TS 20428
 JV7164_MARK LOGO: WSSC
 JV7164_PROJECTION: FLUSH
 JV7164_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7164_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7164+STABILITY: SURFACE MOTION
 JV7164_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7164+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7164
 JV7164  HISTORY     - Date     Condition        Report By
 JV7164  HISTORY     - 1993     MONUMENTED       MSI
 JV7164  HISTORY     - 19980818 GOOD             NGS
 JV7164
 JV7164                          STATION DESCRIPTION
 JV7164
 JV7164'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7164'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7164'APPROXIMATELY 2.2 MI (3.5 KM) NORTH OF THE TOWN OF GLENN DALE.  TO
 JV7164'REACH THE STATION FROM THE INTERSECTION OF THE BALTIMORE-WASHINGTON
 JV7164'PARKWAY AND HILL ROAD, PROCEED EAST ALONG HILL ROAD FOR 0.5 MI
 JV7164'(0.8 KM) UNTIL THE INTERSECTION OF HILL ROAD AND SPRINGFIELD ROAD.
 JV7164'TURN RIGHT AND GO SOUTH ALONG SPRINGFIELD ROAD FOR 1.2 MI (1.9 KM)
 JV7164'TO THE ENTRANCE OF AREA 200 OPTICAL RESEARCH AREA.  TURN LEFT AND GO
 JV7164'EAST INTO THE RESEARCH AREA AND CONTINUE FOR 0.1 MI (0.2 KM) TO THE
 JV7164'STATION ON THE RIGHT. THE STATION IS LOCATED IN THE GRASSY AREA TO
 JV7164'THE SOUTH OF THE MAIN ROAD THROUGH THE RESEARCH AREA.
 JV7164'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7164'MONUMENT, APPROXIMATELY 0.08 M (0.26 FT) ABOVE THE GROUND SURFACE,
 JV7164'AND STAMPED T.S. 20428 PG.  THE DISK IS LOCATED 50.1 FT (15.3 M)
 JV7164'EAST OF A FIRE HYDRANT, 52.5 FT (16.0 M) SOUTHEAST OF THE CENTERLINE
 JV7164'OF THE MAIN ROAD, AND 126.6 FT (38.6 M) WEST OF THE NORTHEAST CORNER
 JV7164'OF BUILDING NUMBER 206.
 JV7164'THE POINT IS ONLY ACCESSIBLE DURING BUSINESS HOURS.
 JV7164
 JV7164                          STATION RECOVERY (1998)
 JV7164
 JV7164'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 JV7164'RECOVERED IN GOOD CONDITION.  ADD FOLLOWING NOTES-- 50 FEET (15.2 M)
 JV7164'WEST OF FIRE HYDRANT, 37.9 FEET (11.6 M) EAST NORTHEAST OF 3 X 3 FOOT
 JV7164'(0.9 M) POWER PANEL, 70 FEET (21.3 M) NORTH OF CENTERLINE OF ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7165 ***********************************************************************
 JV7165  DESIGNATION -  20429
 JV7165  PID         -  JV7165
 JV7165  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7165  COUNTRY     -  US
 JV7165  USGS QUAD   -  LAUREL (2016)
 JV7165
 JV7165                         *CURRENT SURVEY CONTROL
 JV7165  ______________________________________________________________________
 JV7165* NAD 83(2011) POSITION- 39 02 07.57054(N) 076 46 36.41215(W)   ADJUSTED
 JV7165* NAD 83(2011) ELLIP HT-    -5.792 (meters)        (06/27/12)   ADJUSTED
 JV7165* NAD 83(2011) EPOCH   -  2010.00
 JV7165* NAVD 88 ORTHO HEIGHT -    26.7   (meters)       88.    (feet) GPS OBS
 JV7165  ______________________________________________________________________
 JV7165  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7165  GEOID HEIGHT    -        -32.870 (meters)                     GEOID93
 JV7165  GEOID HEIGHT    -        -32.511 (meters)                     GEOID18
 JV7165  NAD 83(2011) X  -  1,134,770.687 (meters)                     COMP
 JV7165  NAD 83(2011) Y  - -4,829,315.695 (meters)                     COMP
 JV7165  NAD 83(2011) Z  -  3,995,369.890 (meters)                     COMP
 JV7165  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 JV7165
 JV7165  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7165  Standards:
 JV7165         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7165            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7165  -------------------------------------------------------------------
 JV7165  NETWORK    1.24   2.74           0.52   0.49   1.40      0.01536770
 JV7165  -------------------------------------------------------------------
 JV7165  Click here for local accuracies and other accuracy information.
 JV7165
 JV7165.The horizontal coordinates were established by GPS observations
 JV7165.and adjusted by the National Geodetic Survey in June 2012.
 JV7165
 JV7165.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7165.been affixed to the stable North American tectonic plate. See 
 JV7165.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7165
 JV7165.The horizontal coordinates are valid at the epoch date displayed above
 JV7165.which is a decimal equivalence of Year/Month/Day.
 JV7165
 JV7165.The orthometric height was determined by GPS observations and a
 JV7165.high-resolution geoid model.
 JV7165
 JV7165.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7165.GEOID18 height accuracy estimate available here.
 JV7165
 JV7165.Click photographs - Photos may exist for this station.
 JV7165
 JV7165.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7165
 JV7165.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7165
 JV7165.The ellipsoidal height was determined by GPS observations
 JV7165.and is referenced to NAD 83.
 JV7165
 JV7165. The following values were computed from the NAD 83(2011) position.
 JV7165
 JV7165;                    North         East     Units Scale Factor Converg.
 JV7165;SPC MD       -   151,963.636   419,326.083   MT  0.99995372   +0 08 24.4
 JV7165;SPC MD       -   498,567.36  1,375,738.99   sFT  0.99995372   +0 08 24.4
 JV7165;UTM  18      - 4,322,210.996   346,217.025   MT  0.99989121   -1 07 09.3
 JV7165
 JV7165!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7165!SPC MD       -   1.00000091  x   0.99995372  =   0.99995463
 JV7165!UTM  18      -   1.00000091  x   0.99989121  =   0.99989212
 JV7165
 JV7165_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4621722210(NAD 83)
 JV7165
 JV7165                          SUPERSEDED SURVEY CONTROL
 JV7165
 JV7165  NAD 83(2007)-  39 02 07.57079(N)    076 46 36.41291(W) AD(2002.00) 0
 JV7165  ELLIP H (02/10/07)   -5.768  (m)                       GP(2002.00)    
 JV7165  ELLIP H (08/30/02)   -5.754  (m)                       GP(       ) 4 2
 JV7165  ELLIP H (09/09/94)   -5.835  (m)                       GP(       ) 4 1
 JV7165  NAD 83(1991)-  39 02 07.57074(N)    076 46 36.41282(W) AD(       ) 1
 JV7165
 JV7165.Superseded values are not recommended for survey control.
 JV7165
 JV7165.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7165.See file dsdata.pdf to determine how the superseded data were derived.
 JV7165
 JV7165_MARKER: DD = SURVEY DISK
 JV7165_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7165_STAMPING: T.S. 20429 PG
 JV7165_MARK LOGO: WSSC
 JV7165_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7165_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7165+STABILITY: SURFACE MOTION
 JV7165_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7165+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7165
 JV7165  HISTORY     - Date     Condition        Report By
 JV7165  HISTORY     - 1993     MONUMENTED       MSI
 JV7165
 JV7165                          STATION DESCRIPTION
 JV7165
 JV7165'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7165'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7165'APPROXIMATELY 2.7 MI (4.3 KM) NORTH OF THE TOWN OF BOWIE.  TO REACH
 JV7165'THE STATION FROM THE INTERSECTION OF HIGHWAY 198 AND THE ENTRANCE
 JV7165'ROAD TO THE PATUXENT WILDLIFE RESEARCH CENTER, PROCEED SOUTH 0.3 MI
 JV7165'(0.5 KM) TO A T INTERSECTION JUST PAST THE MAIN OFFICE. TURN RIGHT
 JV7165'AND GO WEST FOR 0.1 MI (0.2 KM) TO A T INTERSECTION.  TURN LEFT AND
 JV7165'GO SOUTH CONTINUE ON ROAD FOR 2.0 MI (3.2 KM) TO THE INTERSECTION
 JV7165'MARKED BY THE SIGNS L  AND M.  TURN RIGHT AND HEAD WEST ALONG A
 JV7165'DIRT ROAD FOR 0.8 MI (1.3 KM) UNTIL A T INTERSECTION. TURN LEFT AND
 JV7165'HEAD THROUGH A GATE AND CONTINUE FOR 0.4 MI (0.6 KM) (CROSSING A
 JV7165'CREEK) UNTIL ANOTHER INTERSECTION.TURN LEFT AND MAKE ANOTHER
 JV7165'IMMEDIATE TURN LEFT AND DRIVE FOR 1.2 MI (1.9 KM) ALONG A LAKE. TURN
 JV7165'LEFT AND GO SOUTH INTO THE WOODS FOLLOWING A DIRT ROAD AND CONTINUE
 JV7165'FOR O.3 MI INTO A OPEN FIELD. THE ROAD WILL BEND SHARPLY TO THE LEFT
 JV7165'AS IT REACHES THE FIELD AND WILL FOLLOW EAST ALONG THE EDGE OF THE
 JV7165'WOODS AND A CREEK.  THE STATION IS IN THE NORTHEAST CORNER OF THE
 JV7165'FIELD.  THE TIME OF ACCESS TO THE STATION IS RESTRICTED AND A
 JV7165'FOUR-WHEEL DRIVE VEHICLE IS RECOMMENDED.
 JV7165'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7165'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7165'T.S. 20429 PG.  THE DISK IS LOCATED 52.0 FT (15.8 M) NORTHEAST OF A
 JV7165'CEDAR TREE , 73.5 FT (22.4 M) NORTHWEST OF A PINE TREE, 198 FT
 JV7165'(60.4 M) NORTH OF A POWER POLE, AND 1.1 FT (0.3 M) SOUTHWEST OF A
 JV7165'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9939 ***********************************************************************
 HV9939  DESIGNATION -  20430
 HV9939  PID         -  HV9939
 HV9939  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9939  COUNTRY     -  US
 HV9939  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9939
 HV9939                         *CURRENT SURVEY CONTROL
 HV9939  ______________________________________________________________________
 HV9939* NAD 83(2011) POSITION- 38 56 50.37663(N) 076 52 47.00423(W)   ADJUSTED
 HV9939* NAD 83(2011) ELLIP HT-     0.572 (meters)        (06/27/12)   ADJUSTED
 HV9939* NAD 83(2011) EPOCH   -  2010.00
 HV9939* NAVD 88 ORTHO HEIGHT -    32.9   (meters)      108.    (feet) GPS OBS
 HV9939  ______________________________________________________________________
 HV9939  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9939  GEOID HEIGHT    -        -32.690 (meters)                     GEOID93
 HV9939  GEOID HEIGHT    -        -32.328 (meters)                     GEOID18
 HV9939  NAD 83(2011) X  -  1,127,490.300 (meters)                     COMP
 HV9939  NAD 83(2011) Y  - -4,837,345.425 (meters)                     COMP
 HV9939  NAD 83(2011) Z  -  3,987,771.323 (meters)                     COMP
 HV9939  LAPLACE CORR    -         -5.20  (seconds)                    DEFLEC18
 HV9939
 HV9939  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9939  Standards:
 HV9939         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9939            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9939  -------------------------------------------------------------------
 HV9939  NETWORK    1.04   2.29           0.45   0.40   1.17      0.07310260
 HV9939  -------------------------------------------------------------------
 HV9939  Click here for local accuracies and other accuracy information.
 HV9939
 HV9939.The horizontal coordinates were established by GPS observations
 HV9939.and adjusted by the National Geodetic Survey in June 2012.
 HV9939
 HV9939.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9939.been affixed to the stable North American tectonic plate. See 
 HV9939.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9939
 HV9939.The horizontal coordinates are valid at the epoch date displayed above
 HV9939.which is a decimal equivalence of Year/Month/Day.
 HV9939
 HV9939.The orthometric height was determined by GPS observations and a
 HV9939.high-resolution geoid model.
 HV9939
 HV9939.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9939.GEOID18 height accuracy estimate available here.
 HV9939
 HV9939.Click photographs - Photos may exist for this station.
 HV9939
 HV9939.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9939
 HV9939.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9939
 HV9939.The ellipsoidal height was determined by GPS observations
 HV9939.and is referenced to NAD 83.
 HV9939
 HV9939. The following values were computed from the NAD 83(2011) position.
 HV9939
 HV9939;                    North         East     Units Scale Factor Converg.
 HV9939;SPC MD       -   142,165.852   410,426.332   MT  0.99995062   +0 04 31.8
 HV9939;SPC MD       -   466,422.47  1,346,540.39   sFT  0.99995062   +0 04 31.8
 HV9939;UTM  18      - 4,312,611.435   337,104.646   MT  0.99992675   -1 10 54.7
 HV9939
 HV9939!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9939!SPC MD       -   0.99999991  x   0.99995062  =   0.99995053
 HV9939!UTM  18      -   0.99999991  x   0.99992675  =   0.99992666
 HV9939
 HV9939_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3710412611(NAD 83)
 HV9939
 HV9939                          SUPERSEDED SURVEY CONTROL
 HV9939
 HV9939  NAD 83(2007)-  38 56 50.37698(N)    076 52 47.00503(W) AD(2002.00) 0
 HV9939  ELLIP H (02/10/07)    0.594  (m)                       GP(2002.00)    
 HV9939  ELLIP H (08/30/02)    0.597  (m)                       GP(       ) 4 2
 HV9939  ELLIP H (09/09/94)    0.544  (m)                       GP(       ) 4 1
 HV9939  NAD 83(1991)-  38 56 50.37708(N)    076 52 47.00534(W) AD(       ) 1
 HV9939
 HV9939.Superseded values are not recommended for survey control.
 HV9939
 HV9939.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9939.See file dsdata.pdf to determine how the superseded data were derived.
 HV9939
 HV9939_MARKER: DD = SURVEY DISK
 HV9939_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9939_STAMPING: T.S. 20430 PG
 HV9939_MARK LOGO: WSSC
 HV9939_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9939_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9939+STABILITY: SURFACE MOTION
 HV9939_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9939+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9939
 HV9939  HISTORY     - Date     Condition        Report By
 HV9939  HISTORY     - 1993     MONUMENTED       MSI
 HV9939
 HV9939                          STATION DESCRIPTION
 HV9939
 HV9939'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9939'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9939'APPROXIMATELY 0.8 MI (1.3 KM) NORTHEAST OF THE TOWN OF LANDOVER
 HV9939'HILLS. TO REACH THE STATION FROM THE INTERSECTION OF JOHN HANSON
 HV9939'HIGHWAY (U.S.50) AND VETERANS PARKWAY (S.R.410), PROCEED NORTH ALONG
 HV9939'VETERANS PARKWAY FOR 0.3 MI (0.5 KM) UNTIL THE INTERSECTION OF
 HV9939'VETERANS PARKWAY (S.R.410) AND ELLIN ROAD.  TURN RIGHT AND GO EAST
 HV9939'ALONG ELLIN ROAD FOR 0.1 MI (0.2 KM) TO THE STATION ON THE NORTH SIDE
 HV9939'OF ELLIN ROAD.
 HV9939'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9939'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9939'T.S. 20430 PG.  THE DISK IS LOCATED 4.0 FT (1.2 M) NORTHEAST OF THE
 HV9939'CURB ALONG ELLIN ROAD, 4.5 FT (1.4 M) SOUTHWEST OF A GUARDRAIL AND
 HV9939'42.2 FT (12.9 M) SOUTHEAST OF A MANHOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9940 ***********************************************************************
 HV9940  DESIGNATION -  20431
 HV9940  PID         -  HV9940
 HV9940  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9940  COUNTRY     -  US
 HV9940  USGS QUAD   -  LANHAM (2016)
 HV9940
 HV9940                         *CURRENT SURVEY CONTROL
 HV9940  ______________________________________________________________________
 HV9940* NAD 83(2011) POSITION- 38 59 40.48053(N) 076 46 28.81715(W)   ADJUSTED
 HV9940* NAD 83(2011) ELLIP HT-     1.421 (meters)        (06/27/12)   ADJUSTED
 HV9940* NAD 83(2011) EPOCH   -  2010.00
 HV9940* NAVD 88 ORTHO HEIGHT -    34.0   (meters)      112.    (feet) GPS OBS
 HV9940  ______________________________________________________________________
 HV9940  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9940  GEOID HEIGHT    -        -32.920 (meters)                     GEOID93
 HV9940  GEOID HEIGHT    -        -32.560 (meters)                     GEOID18
 HV9940  NAD 83(2011) X  -  1,135,603.069 (meters)                     COMP
 HV9940  NAD 83(2011) Y  - -4,832,059.099 (meters)                     COMP
 HV9940  NAD 83(2011) Z  -  3,991,850.108 (meters)                     COMP
 HV9940  LAPLACE CORR    -         -5.57  (seconds)                    DEFLEC18
 HV9940
 HV9940  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9940  Standards:
 HV9940         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9940            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9940  -------------------------------------------------------------------
 HV9940  NETWORK    1.13   2.53           0.47   0.45   1.29     -0.01393379
 HV9940  -------------------------------------------------------------------
 HV9940  Click here for local accuracies and other accuracy information.
 HV9940
 HV9940.The horizontal coordinates were established by GPS observations
 HV9940.and adjusted by the National Geodetic Survey in June 2012.
 HV9940
 HV9940.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9940.been affixed to the stable North American tectonic plate. See 
 HV9940.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9940
 HV9940.The horizontal coordinates are valid at the epoch date displayed above
 HV9940.which is a decimal equivalence of Year/Month/Day.
 HV9940
 HV9940.The orthometric height was determined by GPS observations and a
 HV9940.high-resolution geoid model.
 HV9940
 HV9940.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9940.GEOID18 height accuracy estimate available here.
 HV9940
 HV9940.Click photographs - Photos may exist for this station.
 HV9940
 HV9940.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9940
 HV9940.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9940
 HV9940.The ellipsoidal height was determined by GPS observations
 HV9940.and is referenced to NAD 83.
 HV9940
 HV9940. The following values were computed from the NAD 83(2011) position.
 HV9940
 HV9940;                    North         East     Units Scale Factor Converg.
 HV9940;SPC MD       -   147,428.394   419,519.936   MT  0.99995199   +0 08 29.1
 HV9940;SPC MD       -   483,687.99  1,376,374.99   sFT  0.99995199   +0 08 29.1
 HV9940;UTM  18      - 4,317,672.870   346,311.190   MT  0.99989085   -1 07 00.9
 HV9940
 HV9940!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9940!SPC MD       -   0.99999978  x   0.99995199  =   0.99995177
 HV9940!UTM  18      -   0.99999978  x   0.99989085  =   0.99989063
 HV9940
 HV9940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4631117672(NAD 83)
 HV9940
 HV9940                          SUPERSEDED SURVEY CONTROL
 HV9940
 HV9940  NAD 83(2007)-  38 59 40.48080(N)    076 46 28.81793(W) AD(2002.00) 0
 HV9940  ELLIP H (02/10/07)    1.444  (m)                       GP(2002.00)    
 HV9940  ELLIP H (08/30/02)    1.456  (m)                       GP(       ) 4 2
 HV9940  ELLIP H (09/09/94)    1.383  (m)                       GP(       ) 4 1
 HV9940  NAD 83(1991)-  38 59 40.48077(N)    076 46 28.81783(W) AD(       ) 1
 HV9940
 HV9940.Superseded values are not recommended for survey control.
 HV9940
 HV9940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9940.See file dsdata.pdf to determine how the superseded data were derived.
 HV9940
 HV9940_MARKER: DD = SURVEY DISK
 HV9940_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9940_STAMPING: T.S. 20431 PG
 HV9940_MARK LOGO: WSSC
 HV9940_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9940_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9940+STABILITY: SURFACE MOTION
 HV9940_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV9940+SATELLITE: SATELLITE OBSERVATIONS - September 05, 2003
 HV9940
 HV9940  HISTORY     - Date     Condition        Report By
 HV9940  HISTORY     - 1993     MONUMENTED       MSI
 HV9940  HISTORY     - 20030905 GOOD             GEOCAC
 HV9940
 HV9940                          STATION DESCRIPTION
 HV9940
 HV9940'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9940'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9940'APPROXIMATELY 0.7 MI (1.1 KM) SOUTHEAST OF THE TOWN OF BOWIE.  TO
 HV9940'REACH THE STATION FROM THE INTERSECTION OF ANNAPOLIS ROAD (S.R.450)
 HV9940'AND HIGH BRIDGE ROAD, PROCEED NORTH FOR 1.6 MI (2.6 KM) ALONG HIGH
 HV9940'BRIDGE ROAD TO THE STATION ON THE EAST SIDE OF HIGH BRIDGE ROAD.  THE
 HV9940'STATION IS LOCATED IN FRONT OF HOUSE NUMBER 7611.
 HV9940'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9940'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9940'T.S. 20431 PG.  THE DISK IS LOCATED 21.6 FT (6.6 M) EAST OF THE
 HV9940'CENTERLINE OF HIGHBRIDGE ROAD, 85.4 FT (26.0 M) SOUTHEAST OF
 HV9940'POWERPOLE (475269) AND 92.2 FT (28.1 M) NORTH OF POWER POLE (310019).
 HV9940
 HV9940                          STATION RECOVERY (2003)
 HV9940
 HV9940'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV9940'STATION IS LOCATED APPROXIMATELY 2 FEET WEST OF A RED BOARD FEST, AND
 HV9940'APPROXIMATELY 6 FEET NORTHWEST OF A POST OF THAT FENCE WITH A PK NAIL
 HV9940'ON TOP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7166 ***********************************************************************
 JV7166  DESIGNATION -  20432
 JV7166  PID         -  JV7166
 JV7166  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7166  COUNTRY     -  US
 JV7166  USGS QUAD   -  BELTSVILLE (2016)
 JV7166
 JV7166                         *CURRENT SURVEY CONTROL
 JV7166  ______________________________________________________________________
 JV7166* NAD 83(2011) POSITION- 39 03 07.30620(N) 076 55 55.49030(W)   ADJUSTED
 JV7166* NAD 83(2011) ELLIP HT-    23.902 (meters)        (06/27/12)   ADJUSTED
 JV7166* NAD 83(2011) EPOCH   -  2010.00
 JV7166* NAVD 88 ORTHO HEIGHT -    56.0   (meters)      184.    (feet) GPS OBS
 JV7166  ______________________________________________________________________
 JV7166  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7166  GEOID HEIGHT    -        -32.470 (meters)                     GEOID93
 JV7166  GEOID HEIGHT    -        -32.099 (meters)                     GEOID18
 JV7166  NAD 83(2011) X  -  1,121,419.582 (meters)                     COMP
 JV7166  NAD 83(2011) Y  - -4,831,265.871 (meters)                     COMP
 JV7166  NAD 83(2011) Z  -  3,996,819.308 (meters)                     COMP
 JV7166  LAPLACE CORR    -         -3.74  (seconds)                    DEFLEC18
 JV7166
 JV7166  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7166  Standards:
 JV7166         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7166            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7166  -------------------------------------------------------------------
 JV7166  NETWORK    1.10   2.27           0.45   0.45   1.16     -0.10816540
 JV7166  -------------------------------------------------------------------
 JV7166  Click here for local accuracies and other accuracy information.
 JV7166
 JV7166.The horizontal coordinates were established by GPS observations
 JV7166.and adjusted by the National Geodetic Survey in June 2012.
 JV7166
 JV7166.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7166.been affixed to the stable North American tectonic plate. See 
 JV7166.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7166
 JV7166.The horizontal coordinates are valid at the epoch date displayed above
 JV7166.which is a decimal equivalence of Year/Month/Day.
 JV7166
 JV7166.The orthometric height was determined by GPS observations and a
 JV7166.high-resolution geoid model.
 JV7166
 JV7166.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7166.GEOID18 height accuracy estimate available here.
 JV7166
 JV7166.Click photographs - Photos may exist for this station.
 JV7166
 JV7166.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7166
 JV7166.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7166
 JV7166.The ellipsoidal height was determined by GPS observations
 JV7166.and is referenced to NAD 83.
 JV7166
 JV7166. The following values were computed from the NAD 83(2011) position.
 JV7166
 JV7166;                    North         East     Units Scale Factor Converg.
 JV7166;SPC MD       -   153,784.231   405,879.031   MT  0.99995456   +0 02 33.5
 JV7166;SPC MD       -   504,540.43  1,331,621.45   sFT  0.99995456   +0 02 33.5
 JV7166;UTM  18      - 4,324,326.706   332,813.742   MT  0.99994418   -1 13 03.2
 JV7166
 JV7166!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7166!SPC MD       -   0.99999625  x   0.99995456  =   0.99995081
 JV7166!UTM  18      -   0.99999625  x   0.99994418  =   0.99994043
 JV7166
 JV7166_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3281324326(NAD 83)
 JV7166
 JV7166                          SUPERSEDED SURVEY CONTROL
 JV7166
 JV7166  NAD 83(2007)-  39 03 07.30643(N)    076 55 55.49109(W) AD(2002.00) 0
 JV7166  ELLIP H (02/10/07)   23.929  (m)                       GP(2002.00)    
 JV7166  ELLIP H (08/30/02)   23.939  (m)                       GP(       ) 4 2
 JV7166  ELLIP H (09/09/94)   23.862  (m)                       GP(       ) 4 1
 JV7166  NAD 83(1991)-  39 03 07.30632(N)    076 55 55.49109(W) AD(       ) 1
 JV7166
 JV7166.Superseded values are not recommended for survey control.
 JV7166
 JV7166.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7166.See file dsdata.pdf to determine how the superseded data were derived.
 JV7166
 JV7166_MARKER: DD = SURVEY DISK
 JV7166_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7166_STAMPING: T.S. 20432 PG
 JV7166_MARK LOGO: WSSC
 JV7166_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7166_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7166+STABILITY: SURFACE MOTION
 JV7166_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7166+SATELLITE: SATELLITE OBSERVATIONS - November 28, 2009
 JV7166
 JV7166  HISTORY     - Date     Condition        Report By
 JV7166  HISTORY     - 1993     MONUMENTED       MSI
 JV7166  HISTORY     - 20091128 GOOD             NGS
 JV7166
 JV7166                          STATION DESCRIPTION
 JV7166
 JV7166'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7166'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7166'APPROXIMATELY 3.4 MI (5.5 KM) NORTH OF THE TOWN OF COLLEGE PARK. TO
 JV7166'REACH THE STATION FROM I.S. 95 EXIT 33 AT THE OVERPASS OF SANDY
 JV7166'SPRING ROAD (S.R. 198), GO SOUTH 4.0 MI (6.4 KM) ALONG I.S. 95 TO THE
 JV7166'FIRST OFF-RAMP ONTO WEST-BOUND POWDER MILL ROAD (S.R. 212) WHICH IS
 JV7166'EXIT 29. CONTINUE ALONG THE RAMP TO THE STATION ON THE LEFT NEAR THE
 JV7166'END OF THE GUARD RAIL.
 JV7166'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7166'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7166'T.S. 20432 PG.  THE DISK IS LOCATED 7.0 FT (2.1 M) NORTHWEST OF THE
 JV7166'GUARDRAIL, 20.5 FT (6.2 M) SOUTHEAST OF EDGE OF THE OFF-RAMP AND 25.2
 JV7166'FT (7.7 M) WEST-SOUTHWEST OF THE NORTHEAST END OF THE GUARDRAIL.
 JV7166
 JV7166                          STATION RECOVERY (2009)
 JV7166
 JV7166'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV7166'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9941 ***********************************************************************
 HV9941  DESIGNATION -  20433
 HV9941  PID         -  HV9941
 HV9941  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9941  COUNTRY     -  US
 HV9941  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9941
 HV9941                         *CURRENT SURVEY CONTROL
 HV9941  ______________________________________________________________________
 HV9941* NAD 83(2011) POSITION- 38 53 51.42767(N) 076 52 56.72677(W)   ADJUSTED
 HV9941* NAD 83(2011) ELLIP HT-    35.485 (meters)        (06/27/12)   ADJUSTED
 HV9941* NAD 83(2011) EPOCH   -  2010.00
 HV9941* NAVD 88 ORTHO HEIGHT -    67.9   (meters)      223.    (feet) GPS OBS
 HV9941  ______________________________________________________________________
 HV9941  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9941  GEOID HEIGHT    -        -32.750 (meters)                     GEOID93
 HV9941  GEOID HEIGHT    -        -32.390 (meters)                     GEOID18
 HV9941  NAD 83(2011) X  -  1,128,055.280 (meters)                     COMP
 HV9941  NAD 83(2011) Y  - -4,840,801.528 (meters)                     COMP
 HV9941  NAD 83(2011) Z  -  3,983,500.035 (meters)                     COMP
 HV9941  LAPLACE CORR    -         -4.70  (seconds)                    DEFLEC18
 HV9941
 HV9941  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9941  Standards:
 HV9941         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9941            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9941  -------------------------------------------------------------------
 HV9941  NETWORK    0.95   2.08           0.42   0.35   1.06      0.06859085
 HV9941  -------------------------------------------------------------------
 HV9941  Click here for local accuracies and other accuracy information.
 HV9941
 HV9941.The horizontal coordinates were established by GPS observations
 HV9941.and adjusted by the National Geodetic Survey in June 2012.
 HV9941
 HV9941.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9941.been affixed to the stable North American tectonic plate. See 
 HV9941.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9941
 HV9941.The horizontal coordinates are valid at the epoch date displayed above
 HV9941.which is a decimal equivalence of Year/Month/Day.
 HV9941
 HV9941.The orthometric height was determined by GPS observations and a
 HV9941.high-resolution geoid model.
 HV9941
 HV9941.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9941.GEOID18 height accuracy estimate available here.
 HV9941
 HV9941.Click photographs - Photos may exist for this station.
 HV9941
 HV9941.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9941
 HV9941.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9941
 HV9941.The ellipsoidal height was determined by GPS observations
 HV9941.and is referenced to NAD 83.
 HV9941
 HV9941. The following values were computed from the NAD 83(2011) position.
 HV9941
 HV9941;                    North         East     Units Scale Factor Converg.
 HV9941;SPC MD       -   136,647.537   410,199.325   MT  0.99994992   +0 04 25.7
 HV9941;SPC MD       -   448,317.79  1,345,795.62   sFT  0.99994992   +0 04 25.7
 HV9941;UTM  18      - 4,307,099.552   336,756.673   MT  0.99992815   -1 10 56.3
 HV9941
 HV9941!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9941!SPC MD       -   0.99999443  x   0.99994992  =   0.99994435
 HV9941!UTM  18      -   0.99999443  x   0.99992815  =   0.99992258
 HV9941
 HV9941_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3675607099(NAD 83)
 HV9941
 HV9941                          SUPERSEDED SURVEY CONTROL
 HV9941
 HV9941  NAD 83(2007)-  38 53 51.42812(N)    076 52 56.72760(W) AD(2002.00) 0
 HV9941  ELLIP H (02/10/07)   35.500  (m)                       GP(2002.00)    
 HV9941  ELLIP H (08/30/02)   35.499  (m)                       GP(       ) 4 2
 HV9941  NAD 83(1993)-  38 53 51.42836(N)    076 52 56.72788(W) AD(       ) 1
 HV9941  ELLIP H (11/14/94)   35.471  (m)                       GP(       ) 4 2
 HV9941  ELLIP H (09/09/94)   35.466  (m)                       GP(       ) 4 1
 HV9941  NAD 83(1991)-  38 53 51.42839(N)    076 52 56.72827(W) AD(       ) 1
 HV9941
 HV9941.Superseded values are not recommended for survey control.
 HV9941
 HV9941.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9941.See file dsdata.pdf to determine how the superseded data were derived.
 HV9941
 HV9941_MARKER: DD = SURVEY DISK
 HV9941_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9941_STAMPING: T.S. 20433 PG
 HV9941_MARK LOGO: WSSC
 HV9941_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9941_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9941+STABILITY: SURFACE MOTION
 HV9941_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9941+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9941
 HV9941  HISTORY     - Date     Condition        Report By
 HV9941  HISTORY     - 1993     MONUMENTED       MSI
 HV9941
 HV9941                          STATION DESCRIPTION
 HV9941
 HV9941'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9941'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9941'APPROXIMATELY 1.2 MI (1.9 KM) EAST OF THE TOWN OF SEAT PLEASANT.  TO
 HV9941'REACH THE STATION FROM THE INTERSECTION OF CENTRAL AVE (S.R.214) AND
 HV9941'HILL ROAD, PROCEED NORTH ALONG HILL ROAD FOR 0.7 MI (1.1 KM) TO THE
 HV9941'ENTRANCE TO THE HILL ROAD WATER PUMPING STATION.  THE STATION IS ON
 HV9941'THE FRONT LAWN OF THE WATER PUMPING STATION .
 HV9941'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9941'MONUMENT, APPROXIMATELY 0.05 M (0.16 FT) BELOW THE GROUND SURFACE,
 HV9941'AND STAMPED T.S. 20433 PG.  THE DISK IS LOCATED 18.3 FT (5.6 M)
 HV9941'NORTHEAST OF A FIRE HYDRANT, 30.2 FT (9.2 M) SOUTHWEST OF POWERPOLE
 HV9941'(PEPCO 83337-4057), 11.5 FT (3.5 M) SOUTH-SOUTHEAST OF A GUTTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9942 ***********************************************************************
 HV9942  DESIGNATION -  20434
 HV9942  PID         -  HV9942
 HV9942  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9942  COUNTRY     -  US
 HV9942  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9942
 HV9942                         *CURRENT SURVEY CONTROL
 HV9942  ______________________________________________________________________
 HV9942* NAD 83(2011) POSITION- 38 55 09.14637(N) 076 55 50.02532(W)   ADJUSTED
 HV9942* NAD 83(2011) ELLIP HT-   -26.079 (meters)        (06/27/12)   ADJUSTED
 HV9942* NAD 83(2011) EPOCH   -  2010.00
 HV9942* NAVD 88 ORTHO HEIGHT -     6.1   (meters)       20.    (feet) GPS OBS
 HV9942  ______________________________________________________________________
 HV9942  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9942  GEOID HEIGHT    -        -32.600 (meters)                     GEOID93
 HV9942  GEOID HEIGHT    -        -32.242 (meters)                     GEOID18
 HV9942  NAD 83(2011) X  -  1,123,636.540 (meters)                     COMP
 HV9942  NAD 83(2011) Y  - -4,840,234.644 (meters)                     COMP
 HV9942  NAD 83(2011) Z  -  3,985,326.303 (meters)                     COMP
 HV9942  LAPLACE CORR    -         -4.66  (seconds)                    DEFLEC18
 HV9942
 HV9942  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9942  Standards:
 HV9942         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9942            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9942  -------------------------------------------------------------------
 HV9942  NETWORK    1.08   2.47           0.48   0.40   1.26     -0.03948978
 HV9942  -------------------------------------------------------------------
 HV9942  Click here for local accuracies and other accuracy information.
 HV9942
 HV9942.The horizontal coordinates were established by GPS observations
 HV9942.and adjusted by the National Geodetic Survey in June 2012.
 HV9942
 HV9942.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9942.been affixed to the stable North American tectonic plate. See 
 HV9942.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9942
 HV9942.The horizontal coordinates are valid at the epoch date displayed above
 HV9942.which is a decimal equivalence of Year/Month/Day.
 HV9942
 HV9942.The orthometric height was determined by GPS observations and a
 HV9942.high-resolution geoid model.
 HV9942
 HV9942.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9942.GEOID18 height accuracy estimate available here.
 HV9942
 HV9942.Click photographs - Photos may exist for this station.
 HV9942
 HV9942.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9942
 HV9942.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9942
 HV9942.The ellipsoidal height was determined by GPS observations
 HV9942.and is referenced to NAD 83.
 HV9942
 HV9942. The following values were computed from the NAD 83(2011) position.
 HV9942
 HV9942;                    North         East     Units Scale Factor Converg.
 HV9942;SPC MD       -   139,039.762   406,021.647   MT  0.99995013   +0 02 36.9
 HV9942;SPC MD       -   456,166.29  1,332,089.35   sFT  0.99995013   +0 02 36.9
 HV9942;UTM  18      - 4,309,582.770   332,632.508   MT  0.99994494   -1 12 47.2
 HV9942
 HV9942!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9942!SPC MD       -   1.00000409  x   0.99995013  =   0.99995422
 HV9942!UTM  18      -   1.00000409  x   0.99994494  =   0.99994903
 HV9942
 HV9942_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3263209582(NAD 83)
 HV9942
 HV9942                          SUPERSEDED SURVEY CONTROL
 HV9942
 HV9942  NAD 83(2007)-  38 55 09.14684(N)    076 55 50.02609(W) AD(2002.00) 0
 HV9942  ELLIP H (02/10/07)  -26.059  (m)                       GP(2002.00)    
 HV9942  ELLIP H (08/30/02)  -26.066  (m)                       GP(       ) 4 2
 HV9942  ELLIP H (09/09/94)  -26.105  (m)                       GP(       ) 4 1
 HV9942  NAD 83(1991)-  38 55 09.14705(N)    076 55 50.02662(W) AD(       ) 1
 HV9942
 HV9942.Superseded values are not recommended for survey control.
 HV9942
 HV9942.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9942.See file dsdata.pdf to determine how the superseded data were derived.
 HV9942
 HV9942_MARKER: DD = SURVEY DISK
 HV9942_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9942_STAMPING: T.S. 20434 PG
 HV9942_MARK LOGO: WSSC
 HV9942_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9942_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9942+STABILITY: SURFACE MOTION
 HV9942_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9942+SATELLITE: SATELLITE OBSERVATIONS - December 21, 2011
 HV9942
 HV9942  HISTORY     - Date     Condition        Report By
 HV9942  HISTORY     - 1993     MONUMENTED       MSI
 HV9942  HISTORY     - 20020925 GOOD             RICE
 HV9942  HISTORY     - 20090825 GOOD             JMTMD
 HV9942  HISTORY     - 20111221 GOOD             GPSSS
 HV9942
 HV9942                          STATION DESCRIPTION
 HV9942
 HV9942'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9942'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9942'APPROXIMATELY 1.1 MI (1.8 KM) SOUTHWEST OF THE TOWN OF CHEVERLY.  TO
 HV9942'REACH THE STATION FROM THE INTERSECTION OF JOHN HANSON HIGHWAY
 HV9942'(U.S.50) WEST-BOUND LANE AND KENILWORTH AVENUE, PROCEED NORTH ALONG
 HV9942'KENNILWORTH AVENUE FOR 0.05 MI (0.08 KM) TO THE INTERSECTION WITH
 HV9942'TUXEDO ROAD.  THE STATION IS LOCATED ON THE NORTH SIDE OF THE
 HV9942'INTERSECTION.
 HV9942'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9942'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9942'T.S. 20434 PG.  THE DISK IS LOCATED 27.5 FT (8.4 M) SOUTHEAST OF A
 HV9942'MANHOLE, 24.8 FT (7.6 M) NORTH OF A FIRE HYDRANT AND 27.5 FT (8.4 M)
 HV9942'SOUTHWEST OF A GUARDRAIL.
 HV9942
 HV9942                          STATION RECOVERY (2002)
 HV9942
 HV9942'RECOVERY NOTE BY RICE ASSOCIATES PC 2002 (DLM)
 HV9942'RECOVERED AS DESCRIBED
 HV9942
 HV9942                          STATION RECOVERY (2009)
 HV9942
 HV9942'RECOVERY NOTE BY JMT ENGINEERING 2009 (GPS)
 HV9942'FD USED FOR GPS STATIC. GPS ORTHO ELEV = 20.0 FT
 HV9942
 HV9942                          STATION RECOVERY (2011)
 HV9942
 HV9942'RECOVERY NOTE BY GPS SALES AND SERVICES 2011 (TED)
 HV9942'RECOVERED BY TED AND TOM OF SURVEY SERVICES OF MD, LLC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7167 ***********************************************************************
 JV7167  DESIGNATION -  20435
 JV7167  PID         -  JV7167
 JV7167  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7167  COUNTRY     -  US
 JV7167  USGS QUAD   -  BELTSVILLE (2016)
 JV7167
 JV7167                         *CURRENT SURVEY CONTROL
 JV7167  ______________________________________________________________________
 JV7167* NAD 83(2011) POSITION- 39 00 02.33977(N) 076 59 06.15082(W)   ADJUSTED
 JV7167* NAD 83(2011) ELLIP HT-    27.560 (meters)        (06/27/12)   ADJUSTED
 JV7167* NAD 83(2011) EPOCH   -  2010.00
 JV7167* NAVD 88 ORTHO HEIGHT -    59.6   (meters)      196.    (feet) GPS OBS
 JV7167  ______________________________________________________________________
 JV7167  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7167  GEOID HEIGHT    -        -32.400 (meters)                     GEOID93
 JV7167  GEOID HEIGHT    -        -32.034 (meters)                     GEOID18
 JV7167  NAD 83(2011) X  -  1,117,762.834 (meters)                     COMP
 JV7167  NAD 83(2011) Y  - -4,835,802.558 (meters)                     COMP
 JV7167  NAD 83(2011) Z  -  3,992,390.440 (meters)                     COMP
 JV7167  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 JV7167
 JV7167  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7167  Standards:
 JV7167         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7167            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7167  -------------------------------------------------------------------
 JV7167  NETWORK    3.07   5.31           1.37   1.11   2.71      0.10846453
 JV7167  -------------------------------------------------------------------
 JV7167  Click here for local accuracies and other accuracy information.
 JV7167
 JV7167.The horizontal coordinates were established by GPS observations
 JV7167.and adjusted by the National Geodetic Survey in June 2012.
 JV7167
 JV7167.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7167.been affixed to the stable North American tectonic plate. See 
 JV7167.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7167
 JV7167.The horizontal coordinates are valid at the epoch date displayed above
 JV7167.which is a decimal equivalence of Year/Month/Day.
 JV7167
 JV7167.The orthometric height was determined by GPS observations and a
 JV7167.high-resolution geoid model.
 JV7167
 JV7167.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7167.GEOID18 height accuracy estimate available here.
 JV7167
 JV7167.Click photographs - Photos may exist for this station.
 JV7167
 JV7167.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7167
 JV7167.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7167
 JV7167.The ellipsoidal height was determined by GPS observations
 JV7167.and is referenced to NAD 83.
 JV7167
 JV7167. The following values were computed from the NAD 83(2011) position.
 JV7167
 JV7167;                    North         East     Units Scale Factor Converg.
 JV7167;SPC MD       -   148,078.464   401,295.693   MT  0.99995221   +0 00 33.8
 JV7167;SPC MD       -   485,820.76  1,316,584.29   sFT  0.99995221   +0 00 33.8
 JV7167;UTM  18      - 4,318,723.063   328,106.086   MT  0.99996384   -1 14 58.4
 JV7167
 JV7167!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7167!SPC MD       -   0.99999568  x   0.99995221  =   0.99994789
 JV7167!UTM  18      -   0.99999568  x   0.99996384  =   0.99995952
 JV7167
 JV7167_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2810618723(NAD 83)
 JV7167
 JV7167                          SUPERSEDED SURVEY CONTROL
 JV7167
 JV7167  NAD 83(2007)-  39 00 02.33988(N)    076 59 06.15119(W) AD(2002.00) 0
 JV7167  ELLIP H (02/10/07)   27.587  (m)                       GP(2002.00)    
 JV7167  ELLIP H (08/30/02)   27.592  (m)                       GP(       ) 4 2
 JV7167  ELLIP H (09/09/94)   27.517  (m)                       GP(       ) 4 1
 JV7167  NAD 83(1991)-  39 00 02.33983(N)    076 59 06.15142(W) AD(       ) 1
 JV7167
 JV7167.Superseded values are not recommended for survey control.
 JV7167
 JV7167.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7167.See file dsdata.pdf to determine how the superseded data were derived.
 JV7167
 JV7167_MARKER: DD = SURVEY DISK
 JV7167_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7167_STAMPING: T.S. 20435 PG
 JV7167_MARK LOGO: WSSC
 JV7167_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7167_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7167+STABILITY: SURFACE MOTION
 JV7167_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV7167+SATELLITE: SATELLITE OBSERVATIONS - December 27, 2004
 JV7167
 JV7167  HISTORY     - Date     Condition        Report By
 JV7167  HISTORY     - 1993     MONUMENTED       MSI
 JV7167  HISTORY     - 19950317 GOOD             MSI
 JV7167  HISTORY     - 20041227 GOOD             GEOCAC
 JV7167
 JV7167                          STATION DESCRIPTION
 JV7167
 JV7167'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7167'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7167'APPROXIMATELY 3.2 MI (5.1 KM) WEST OF THE TOWN OF COLLEGE PARK.  TO
 JV7167'REACH THE STATION FROM THE INTERSECTION OF THE CAPITAL BELTWAY (I.S.
 JV7167'495) AND NEW HAMPSHIRE AVENUE (S.R. 650), PROCEED SOUTH ALONG NEW
 JV7167'HAMPSHIRE AVENUE FOR 1.4 MI (2.3 KM) TO THE INTERSECTION WITH RUATAN
 JV7167'STREET. TURN RIGHT AND TRAVEL WEST FOR 0.2 MI (0.3 KM) TO THE
 JV7167'INTERSECTION WITH 11 TH AVENUE.  TURN RIGHT AND TRAVEL NORTH TO A T-
 JV7167'INTERSECTION WITH QUEBEC TERRACE AND THE STATION ON NORTH SIDE OF
 JV7167'QUEBEC TERRACE.
 JV7167'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7167'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7167'T.S. 20435 PG.  THE DISK IS LOCATED 12.5 FT (3.8 M) NORTH-NORTHWEST
 JV7167'OF PEPCO POWER 804425-1703, 8.2 FT (2.5 M) SOUTHEAST OF THE END OF A
 JV7167'HEDGE AND FENCE, AND 13.2 FT (4.0 M) NORTH OF THE BACK OF CURB ON THE
 JV7167'NORTH SIDE OF QUEBEC TERRACE.
 JV7167
 JV7167                          STATION RECOVERY (1995)
 JV7167
 JV7167'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1995 (BAC)
 JV7167'RECOVERED AS DESCRIBED.
 JV7167
 JV7167                          STATION RECOVERY (2004)
 JV7167
 JV7167'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV7167'LOCATED AS DESCRIBED AT THE ENTRANCE TO SUBURBAN HILL APARTMENTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9943 ***********************************************************************
 HV9943  DESIGNATION -  20436
 HV9943  PID         -  HV9943
 HV9943  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9943  COUNTRY     -  US
 HV9943  USGS QUAD   -  ANACOSTIA (2016)
 HV9943
 HV9943                         *CURRENT SURVEY CONTROL
 HV9943  ______________________________________________________________________
 HV9943* NAD 83(2011) POSITION- 38 47 35.23566(N) 076 55 49.93385(W)   ADJUSTED
 HV9943* NAD 83(2011) ELLIP HT-    47.045 (meters)        (06/27/12)   ADJUSTED
 HV9943* NAD 83(2011) EPOCH   -  2010.00
 HV9943* NAVD 88 ORTHO HEIGHT -    79.5   (meters)      261.    (feet) GPS OBS
 HV9943  ______________________________________________________________________
 HV9943  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9943  GEOID HEIGHT    -        -32.810 (meters)                     GEOID93
 HV9943  GEOID HEIGHT    -        -32.443 (meters)                     GEOID18
 HV9943  NAD 83(2011) X  -  1,125,637.318 (meters)                     COMP
 HV9943  NAD 83(2011) Y  - -4,848,843.538 (meters)                     COMP
 HV9943  NAD 83(2011) Z  -  3,974,472.227 (meters)                     COMP
 HV9943  LAPLACE CORR    -         -4.04  (seconds)                    DEFLEC18
 HV9943
 HV9943  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9943  Standards:
 HV9943         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9943            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9943  -------------------------------------------------------------------
 HV9943  NETWORK    0.92   2.12           0.39   0.36   1.08      0.10111029
 HV9943  -------------------------------------------------------------------
 HV9943  Click here for local accuracies and other accuracy information.
 HV9943
 HV9943.The horizontal coordinates were established by GPS observations
 HV9943.and adjusted by the National Geodetic Survey in June 2012.
 HV9943
 HV9943.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9943.been affixed to the stable North American tectonic plate. See 
 HV9943.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9943
 HV9943.The horizontal coordinates are valid at the epoch date displayed above
 HV9943.which is a decimal equivalence of Year/Month/Day.
 HV9943
 HV9943.The orthometric height was determined by GPS observations and a
 HV9943.high-resolution geoid model.
 HV9943
 HV9943.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9943.GEOID18 height accuracy estimate available here.
 HV9943
 HV9943.Click photographs - Photos may exist for this station.
 HV9943
 HV9943.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9943
 HV9943.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9943
 HV9943.The ellipsoidal height was determined by GPS observations
 HV9943.and is referenced to NAD 83.
 HV9943
 HV9943. The following values were computed from the NAD 83(2011) position.
 HV9943
 HV9943;                    North         East     Units Scale Factor Converg.
 HV9943;SPC MD       -   125,043.280   406,034.501   MT  0.99995088   +0 02 37.0
 HV9943;SPC MD       -   410,246.16  1,332,131.53   sFT  0.99995088   +0 02 37.0
 HV9943;UTM  18      - 4,295,589.427   332,338.798   MT  0.99994616   -1 12 35.2
 HV9943
 HV9943!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9943!SPC MD       -   0.99999262  x   0.99995088  =   0.99994350
 HV9943!UTM  18      -   0.99999262  x   0.99994616  =   0.99993878
 HV9943
 HV9943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3233895589(NAD 83)
 HV9943
 HV9943|---------------------------------------------------------------------|
 HV9943| PID    Reference Object                     Distance      Geod. Az  |
 HV9943|                                                           dddmmss.s |
 HV9943| HV9998 GPS 546                             108.390 METERS 11317     |
 HV9943|---------------------------------------------------------------------|
 HV9943
 HV9943                          SUPERSEDED SURVEY CONTROL
 HV9943
 HV9943  NAD 83(2007)-  38 47 35.23611(N)    076 55 49.93473(W) AD(2002.00) 0
 HV9943  ELLIP H (02/10/07)   47.042  (m)                       GP(2002.00)    
 HV9943  ELLIP H (08/30/02)   47.037  (m)                       GP(       ) 4 2
 HV9943  NAD 83(1993)-  38 47 35.23624(N)    076 55 49.93522(W) AD(       ) 1
 HV9943  ELLIP H (11/14/94)   47.040  (m)                       GP(       ) 4 2
 HV9943  ELLIP H (09/09/94)   47.032  (m)                       GP(       ) 4 1
 HV9943  NAD 83(1991)-  38 47 35.23618(N)    076 55 49.93543(W) AD(       ) 1
 HV9943
 HV9943.Superseded values are not recommended for survey control.
 HV9943
 HV9943.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9943.See file dsdata.pdf to determine how the superseded data were derived.
 HV9943
 HV9943_MARKER: DD = SURVEY DISK
 HV9943_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9943_STAMPING: T.S. 20436 PG
 HV9943_MARK LOGO: WSSC
 HV9943_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9943_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9943+STABILITY: SURFACE MOTION
 HV9943_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9943+SATELLITE: SATELLITE OBSERVATIONS - January 08, 2013
 HV9943
 HV9943  HISTORY     - Date     Condition        Report By
 HV9943  HISTORY     - 1993     MONUMENTED       MSI
 HV9943  HISTORY     - 20030416 GOOD             INDIV
 HV9943  HISTORY     - 20130108 GOOD             GPSSS
 HV9943
 HV9943                          STATION DESCRIPTION
 HV9943
 HV9943'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9943'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9943'APPROXIMATELY 3.1 MI (5.0 KM) SOUTHWEST OF THE TOWN OF MORNINGSIDE.
 HV9943'TO REACH THE STATION FROM THE INTERSECTION OF TEMPLE HILL ROAD AND
 HV9943'ALLENTOWN ROAD, PROCEED SOUTHWEST ALONG ALLENTOWN ROAD FOR
 HV9943'APPROXIMATELY 500 FT (152.4 M) TO THE ENTRANCE OF A PARKING LOT FOR
 HV9943'OFFICE CONDOS.  TURN RIGHT AND ENTER PARKING LOT, AND PROCEED TO THE
 HV9943'GRASS ISLAND IN THE NORTH SECTION OF THE PARKING LOT, WHERE THE
 HV9943'STATION IS LOCATED.
 HV9943'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9943'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9943'T.S. 20436 PG.  THE DISK IS LOCATED 12.0 FT (3.7 M) SOUTHWEST OF A
 HV9943'LIGHT POLE, 72.1 FT (22.0 M) NORTHEAST OF A MANHOLE AND 25.5 FT
 HV9943'(7.8 M) SOUTHEAST OF THE FENCELINE.
 HV9943
 HV9943                          STATION RECOVERY (2003)
 HV9943
 HV9943'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (RL)
 HV9943'RECOVERED BY COMPASSCOM, INC.
 HV9943
 HV9943                          STATION RECOVERY (2013)
 HV9943
 HV9943'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (FP)
 HV9943'RECOVERED BY FARON PYLES, PLS OF NORTHERN BAY LAND PLANNING,
 HV9943'ENGINEERING AND SURVEYING CORP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7168 ***********************************************************************
 JV7168  DESIGNATION -  20437
 JV7168  PID         -  JV7168
 JV7168  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7168  COUNTRY     -  US
 JV7168  USGS QUAD   -  BELTSVILLE (2016)
 JV7168
 JV7168                         *CURRENT SURVEY CONTROL
 JV7168  ______________________________________________________________________
 JV7168* NAD 83(2011) POSITION- 39 00 24.68571(N) 076 55 50.78946(W)   ADJUSTED
 JV7168* NAD 83(2011) ELLIP HT-    16.069 (meters)        (06/27/12)   ADJUSTED
 JV7168* NAD 83(2011) EPOCH   -  2010.00
 JV7168* NAVD 88 ORTHO HEIGHT -    48.2   (meters)      158.    (feet) GPS OBS
 JV7168  ______________________________________________________________________
 JV7168  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7168  GEOID HEIGHT    -        -32.500 (meters)                     GEOID93
 JV7168  GEOID HEIGHT    -        -32.128 (meters)                     GEOID18
 JV7168  NAD 83(2011) X  -  1,122,242.416 (meters)                     COMP
 JV7168  NAD 83(2011) Y  - -4,834,310.549 (meters)                     COMP
 JV7168  NAD 83(2011) Z  -  3,992,918.710 (meters)                     COMP
 JV7168  LAPLACE CORR    -         -4.24  (seconds)                    DEFLEC18
 JV7168
 JV7168  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7168  Standards:
 JV7168         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7168            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7168  -------------------------------------------------------------------
 JV7168  NETWORK    1.06   2.35           0.44   0.43   1.20      0.03194126
 JV7168  -------------------------------------------------------------------
 JV7168  Click here for local accuracies and other accuracy information.
 JV7168
 JV7168.The horizontal coordinates were established by GPS observations
 JV7168.and adjusted by the National Geodetic Survey in June 2012.
 JV7168
 JV7168.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7168.been affixed to the stable North American tectonic plate. See 
 JV7168.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7168
 JV7168.The horizontal coordinates are valid at the epoch date displayed above
 JV7168.which is a decimal equivalence of Year/Month/Day.
 JV7168
 JV7168.The orthometric height was determined by GPS observations and a
 JV7168.high-resolution geoid model.
 JV7168
 JV7168.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7168.GEOID18 height accuracy estimate available here.
 JV7168
 JV7168.Click photographs - Photos may exist for this station.
 JV7168
 JV7168.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7168
 JV7168.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7168
 JV7168.The ellipsoidal height was determined by GPS observations
 JV7168.and is referenced to NAD 83.
 JV7168
 JV7168. The following values were computed from the NAD 83(2011) position.
 JV7168
 JV7168;                    North         East     Units Scale Factor Converg.
 JV7168;SPC MD       -   148,769.694   405,995.861   MT  0.99995246   +0 02 36.4
 JV7168;SPC MD       -   488,088.57  1,332,004.75   sFT  0.99995246   +0 02 36.4
 JV7168;UTM  18      - 4,319,310.860   332,820.315   MT  0.99994416   -1 12 55.9
 JV7168
 JV7168!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7168!SPC MD       -   0.99999748  x   0.99995246  =   0.99994994
 JV7168!UTM  18      -   0.99999748  x   0.99994416  =   0.99994164
 JV7168
 JV7168_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3282019310(NAD 83)
 JV7168
 JV7168                          SUPERSEDED SURVEY CONTROL
 JV7168
 JV7168  NAD 83(2007)-  39 00 24.68601(N)    076 55 50.79028(W) AD(2002.00) 0
 JV7168  ELLIP H (02/10/07)   16.095  (m)                       GP(2002.00)    
 JV7168  ELLIP H (08/30/02)   16.103  (m)                       GP(       ) 4 2
 JV7168  ELLIP H (09/09/94)   16.032  (m)                       GP(       ) 4 1
 JV7168  NAD 83(1991)-  39 00 24.68599(N)    076 55 50.79048(W) AD(       ) 1
 JV7168
 JV7168.Superseded values are not recommended for survey control.
 JV7168
 JV7168.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7168.See file dsdata.pdf to determine how the superseded data were derived.
 JV7168
 JV7168_MARKER: DD = SURVEY DISK
 JV7168_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7168_STAMPING: T.S. 20437 PG
 JV7168_MARK LOGO: WSSC
 JV7168_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7168_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7168+STABILITY: SURFACE MOTION
 JV7168_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV7168+SATELLITE: SATELLITE OBSERVATIONS - July 15, 2008
 JV7168
 JV7168  HISTORY     - Date     Condition        Report By
 JV7168  HISTORY     - 1993     MONUMENTED       MSI
 JV7168  HISTORY     - 20080715 GOOD             NGS
 JV7168
 JV7168                          STATION DESCRIPTION
 JV7168
 JV7168'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7168'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, AT THE TOWN
 JV7168'OF COLLEGE PARK.  TO REACH THE STATION FROM THE BALTIMORE AVENUE
 JV7168'(U.S. 1) OVERPASS AT THE EXIT 25 OF THE CAPITAL BELTWAY (I.S. 495),
 JV7168'GO SOUTH ALONG BALTIMORE AVENUE FOR 0.8 MI (1.3 KM) TO THE
 JV7168'INTERSECTION WITH ERIE ST. TURN RIGHT ON ERIE AND GO TO THE STATION
 JV7168'ON THE LEFT WHICH IS LOCATED BEHIND AMERICAN LEGION COLLEGE PARK POST
 JV7168'217.
 JV7168'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7168'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7168'T.S. 20437 PG.  THE DISK IS LOCATED 84.1 FT (25.6 M)
 JV7168'SOUTH-SOUTHWEST OF A PEPCO POWER POLE NUMBER 89427-6241, 65.9 FT
 JV7168'(20.1 M) EAST-SOUTHEAST OF A LIGHT POLE AND 47.6 FT (14.5 M) WEST OF
 JV7168'A PEPCO POWER POLE NUMBER 89427-6435.
 JV7168
 JV7168                          STATION RECOVERY (2008)
 JV7168
 JV7168'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7168'STATION IS POORLY SITUATED FOR GPS OBSERVATIONS DUE TO OVERHANGING
 JV7168'TREE TO THE SW AND ADDITIONAL TREE OBSTRUCTIONS TO THE NE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9944 ***********************************************************************
 HV9944  DESIGNATION -  20438
 HV9944  PID         -  HV9944
 HV9944  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9944  COUNTRY     -  US
 HV9944  USGS QUAD   -  ANACOSTIA (2016)
 HV9944
 HV9944                         *CURRENT SURVEY CONTROL
 HV9944  ______________________________________________________________________
 HV9944* NAD 83(2011) POSITION- 38 50 06.64107(N) 076 54 14.07656(W)   ADJUSTED
 HV9944* NAD 83(2011) ELLIP HT-    31.674 (meters)        (06/27/12)   ADJUSTED
 HV9944* NAD 83(2011) EPOCH   -  2010.00
 HV9944* NAVD 88 ORTHO HEIGHT -    64.1   (meters)      210.    (feet) GPS OBS
 HV9944  ______________________________________________________________________
 HV9944  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9944  GEOID HEIGHT    -        -32.790 (meters)                     GEOID93
 HV9944  GEOID HEIGHT    -        -32.428 (meters)                     GEOID18
 HV9944  NAD 83(2011) X  -  1,127,224.798 (meters)                     COMP
 HV9944  NAD 83(2011) Y  - -4,845,457.918 (meters)                     COMP
 HV9944  NAD 83(2011) Z  -  3,978,100.493 (meters)                     COMP
 HV9944  LAPLACE CORR    -         -4.57  (seconds)                    DEFLEC18
 HV9944
 HV9944  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9944  Standards:
 HV9944         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9944            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9944  -------------------------------------------------------------------
 HV9944  NETWORK    0.84   1.76           0.36   0.32   0.90      0.15949234
 HV9944  -------------------------------------------------------------------
 HV9944  Click here for local accuracies and other accuracy information.
 HV9944
 HV9944.The horizontal coordinates were established by GPS observations
 HV9944.and adjusted by the National Geodetic Survey in June 2012.
 HV9944
 HV9944.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9944.been affixed to the stable North American tectonic plate. See 
 HV9944.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9944
 HV9944.The horizontal coordinates are valid at the epoch date displayed above
 HV9944.which is a decimal equivalence of Year/Month/Day.
 HV9944
 HV9944.The orthometric height was determined by GPS observations and a
 HV9944.high-resolution geoid model.
 HV9944
 HV9944.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9944.GEOID18 height accuracy estimate available here.
 HV9944
 HV9944.Click photographs - Photos may exist for this station.
 HV9944
 HV9944.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9944
 HV9944.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9944
 HV9944.The ellipsoidal height was determined by GPS observations
 HV9944.and is referenced to NAD 83.
 HV9944
 HV9944. The following values were computed from the NAD 83(2011) position.
 HV9944
 HV9944;                    North         East     Units Scale Factor Converg.
 HV9944;SPC MD       -   129,713.979   408,342.777   MT  0.99995010   +0 03 37.1
 HV9944;SPC MD       -   425,569.95  1,339,704.59   sFT  0.99995010   +0 03 37.1
 HV9944;UTM  18      - 4,300,208.452   334,748.711   MT  0.99993628   -1 11 39.0
 HV9944
 HV9944!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9944!SPC MD       -   0.99999503  x   0.99995010  =   0.99994513
 HV9944!UTM  18      -   0.99999503  x   0.99993628  =   0.99993131
 HV9944
 HV9944_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3474800208(NAD 83)
 HV9944
 HV9944                          SUPERSEDED SURVEY CONTROL
 HV9944
 HV9944  NAD 83(2007)-  38 50 06.64153(N)    076 54 14.07743(W) AD(2002.00) 0
 HV9944  ELLIP H (02/10/07)   31.680  (m)                       GP(2002.00)    
 HV9944  ELLIP H (08/30/02)   31.671  (m)                       GP(       ) 4 2
 HV9944  NAD 83(1993)-  38 50 06.64189(N)    076 54 14.07771(W) AD(       ) 1
 HV9944  ELLIP H (11/14/94)   31.668  (m)                       GP(       ) 4 2
 HV9944  ELLIP H (09/09/94)   31.657  (m)                       GP(       ) 4 1
 HV9944  NAD 83(1991)-  38 50 06.64190(N)    076 54 14.07800(W) AD(       ) 1
 HV9944
 HV9944.Superseded values are not recommended for survey control.
 HV9944
 HV9944.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9944.See file dsdata.pdf to determine how the superseded data were derived.
 HV9944
 HV9944_MARKER: DD = SURVEY DISK
 HV9944_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9944_STAMPING: T.S. 20438 PG
 HV9944_MARK LOGO: WSSC
 HV9944_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9944_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9944+STABILITY: SURFACE MOTION
 HV9944_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9944+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9944
 HV9944  HISTORY     - Date     Condition        Report By
 HV9944  HISTORY     - 1993     MONUMENTED       MSI
 HV9944  HISTORY     - 20050320 GOOD             GEOCAC
 HV9944
 HV9944                          STATION DESCRIPTION
 HV9944
 HV9944'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9944'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9944'APPROXIMATELY 0.8 MI (1.3 KM) NORTHWEST OF THE TOWN OF MORNINGSIDE.
 HV9944'TO REACH THE STATION FROM THE INTERSECTION OF BRANCH AVENUE (S.R. 5)
 HV9944'AND SILVER HILL ROAD, PROCEED EAST ALONG SILVER HILL ROAD FOR 0.8 MI
 HV9944'(1.3 KM) TO THE RAMP ONTO SUITLAND PARKWAY. TRAVEL SOUTHEAST ALONG
 HV9944'SUITLAND PARKWAY FOR 1.7 MI (2.7 KM) ONTO THE OFF RAMP TO SUITLAND
 HV9944'ROAD. THE STATION ON THE LEFT OF THE RAMP.
 HV9944'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9944'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9944'T.S. 20438 PG.  THE DISK IS LOCATED 29.5 FT (9.0 M) NORTH OF THE
 HV9944'EDGE OF PAVEMENT OF THE OFF-RAMP, 55.0 FT (16.8 M) EAST OF THE TWO
 HV9944'WAY TRAFFIC SIGN AND 21.0 FT (6.4 M) WEST OF THE EDGE OF PAVEMENT OF
 HV9944'THE ON-RAMP.
 HV9944
 HV9944                          STATION RECOVERY (2005)
 HV9944
 HV9944'RECOVERY NOTE BY GEOCACHING 2005 (TAK)
 HV9944'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1312 ***********************************************************************
 HV1312  DESIGNATION -  2044 WSSC
 HV1312  PID         -  HV1312
 HV1312  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1312  COUNTRY     -  US
 HV1312  USGS QUAD   -  ANACOSTIA (2016)
 HV1312
 HV1312                         *CURRENT SURVEY CONTROL
 HV1312  ______________________________________________________________________
 HV1312* NAD 83(1986) POSITION- 38 52 13.2    (N) 076 56 15.5    (W)   HD_HELD2
 HV1312* NAVD 88 ORTHO HEIGHT -    92.11  (+/-2cm)      302.2   (feet) VERTCON3
 HV1312  ______________________________________________________________________
 HV1312  GEOID HEIGHT    -        -32.292 (meters)                     GEOID18
 HV1312  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1312
 HV1312.The horizontal coordinates were established by autonomous hand held GPS
 HV1312.observations and have an estimated accuracy of +/- 10 meters.
 HV1312
 HV1312.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1312.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1312
 HV1312.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1312.GEOID18 height accuracy estimate available here.
 HV1312
 HV1312.The vertical order pertains to the NGVD 29 superseded value.
 HV1312
 HV1312.Click photographs - Photos may exist for this station.
 HV1312
 HV1312;                    North         East    Units  Estimated Accuracy
 HV1312;SPC MD       -   133,614.      405,412.      MT  (+/- 10 meters HH2 GPS)
 HV1312
 HV1312_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3190304171(NAD 83)
 HV1312
 HV1312                          SUPERSEDED SURVEY CONTROL
 HV1312
 HV1312  NGVD 29 (11/26/84)   92.352  (m)          302.99   (f) ADJUSTED    2 0
 HV1312
 HV1312.Superseded values are not recommended for survey control.
 HV1312
 HV1312.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1312.See file dsdata.pdf to determine how the superseded data were derived.
 HV1312
 HV1312_MARKER: DD = SURVEY DISK
 HV1312_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1312_SP_SET: CONC BASE OF WATER TANK LEG
 HV1312_STAMPING: 2044
 HV1312_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1312
 HV1312  HISTORY     - Date     Condition        Report By
 HV1312  HISTORY     - 1944     MONUMENTED       WSSC
 HV1312
 HV1312                          STATION DESCRIPTION
 HV1312
 HV1312'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1312'AT BRADBURY HEIGHTS.
 HV1312'AT THE SOUTHWEST CORNER OF THE INTERSECTION OF SOUTHERN AVENUE
 HV1312'AND BECK STREET, AT THE BRADBURY HEIGHTS WATER TANK, AND IN
 HV1312'THE CONCRETE BASE OF THE EAST LEG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7169 ***********************************************************************
 JV7169  DESIGNATION -  20440
 JV7169  PID         -  JV7169
 JV7169  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7169  COUNTRY     -  US
 JV7169  USGS QUAD   -  BELTSVILLE (2016)
 JV7169
 JV7169                         *CURRENT SURVEY CONTROL
 JV7169  ______________________________________________________________________
 JV7169* NAD 83(2011) POSITION- 39 03 25.41438(N) 076 54 24.94405(W)   ADJUSTED
 JV7169* NAD 83(2011) ELLIP HT-    23.555 (meters)        (06/27/12)   ADJUSTED
 JV7169* NAD 83(2011) EPOCH   -  2010.00
 JV7169* NAVD 88 ORTHO HEIGHT -    55.7   (meters)      183.    (feet) GPS OBS
 JV7169  ______________________________________________________________________
 JV7169  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7169  GEOID HEIGHT    -        -32.510 (meters)                     GEOID93
 JV7169  GEOID HEIGHT    -        -32.148 (meters)                     GEOID18
 JV7169  NAD 83(2011) X  -  1,123,460.542 (meters)                     COMP
 JV7169  NAD 83(2011) Y  - -4,830,430.169 (meters)                     COMP
 JV7169  NAD 83(2011) Z  -  3,997,252.729 (meters)                     COMP
 JV7169  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 JV7169
 JV7169  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7169  Standards:
 JV7169         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7169            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7169  -------------------------------------------------------------------
 JV7169  NETWORK    1.13   2.33           0.46   0.46   1.19     -0.10200181
 JV7169  -------------------------------------------------------------------
 JV7169  Click here for local accuracies and other accuracy information.
 JV7169
 JV7169.The horizontal coordinates were established by GPS observations
 JV7169.and adjusted by the National Geodetic Survey in June 2012.
 JV7169
 JV7169.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7169.been affixed to the stable North American tectonic plate. See 
 JV7169.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7169
 JV7169.The horizontal coordinates are valid at the epoch date displayed above
 JV7169.which is a decimal equivalence of Year/Month/Day.
 JV7169
 JV7169.The orthometric height was determined by GPS observations and a
 JV7169.high-resolution geoid model.
 JV7169
 JV7169.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7169.GEOID18 height accuracy estimate available here.
 JV7169
 JV7169.Click photographs - Photos may exist for this station.
 JV7169
 JV7169.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7169
 JV7169.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7169
 JV7169.The ellipsoidal height was determined by GPS observations
 JV7169.and is referenced to NAD 83.
 JV7169
 JV7169. The following values were computed from the NAD 83(2011) position.
 JV7169
 JV7169;                    North         East     Units Scale Factor Converg.
 JV7169;SPC MD       -   154,344.544   408,055.570   MT  0.99995484   +0 03 30.3
 JV7169;SPC MD       -   506,378.72  1,338,762.32   sFT  0.99995484   +0 03 30.3
 JV7169;UTM  18      - 4,324,839.007   335,002.045   MT  0.99993523   -1 12 06.5
 JV7169
 JV7169!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7169!SPC MD       -   0.99999630  x   0.99995484  =   0.99995114
 JV7169!UTM  18      -   0.99999630  x   0.99993523  =   0.99993153
 JV7169
 JV7169_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3500224839(NAD 83)
 JV7169
 JV7169                          SUPERSEDED SURVEY CONTROL
 JV7169
 JV7169  NAD 83(2007)-  39 03 25.41463(N)    076 54 24.94482(W) AD(2002.00) 0
 JV7169  ELLIP H (02/10/07)   23.582  (m)                       GP(2002.00)    
 JV7169  ELLIP H (08/30/02)   23.596  (m)                       GP(       ) 4 2
 JV7169  ELLIP H (09/09/94)   23.519  (m)                       GP(       ) 4 1
 JV7169  NAD 83(1991)-  39 03 25.41454(N)    076 54 24.94484(W) AD(       ) 1
 JV7169
 JV7169.Superseded values are not recommended for survey control.
 JV7169
 JV7169.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7169.See file dsdata.pdf to determine how the superseded data were derived.
 JV7169
 JV7169_MARKER: DD = SURVEY DISK
 JV7169_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7169_STAMPING: T.S. 20440 PG
 JV7169_MARK LOGO: WSSC
 JV7169_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7169_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7169+STABILITY: SURFACE MOTION
 JV7169_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7169+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7169
 JV7169  HISTORY     - Date     Condition        Report By
 JV7169  HISTORY     - 1993     MONUMENTED       MSI
 JV7169
 JV7169                          STATION DESCRIPTION
 JV7169
 JV7169'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7169'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7169'APPROXIMATELY 3.5 MI (5.6 KM) NORTH OF THE TOWN OF COLLEGE PARK.  TO
 JV7169'REACH THE STATION FROM THE INTERSECTION OF POWDER MILL ROAD (S.R.
 JV7169'212)AND OLD GUNPOWDER ROAD, PROCEED NORTH ALONG OLD GUNPOWDER ROAD
 JV7169'FOR 0.1 MI (0.2 KM) TO THE INTERSECTION WITH AMMENDALE ROAD. TURN
 JV7169'RIGHT AND TRAVEL EAST FOR 0.9 MI (1.4 KM) TO A Y-INTERSECTION WITH
 JV7169'VIRGINIA MANOR ROAD, AND A DIRT ROAD ON THE LEFT. TURN LEFT INTO DIRT
 JV7169'ROAD AND PARK.  THE STATION IS ON TOP OF SMALL HILL ON THE NORTH SIDE
 JV7169'OF THE Y INTERSECTION.
 JV7169'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7169'MONUMENT, APPROXIMATELY 0.05 M (0.16 FT) ABOVE THE GROUND SURFACE,
 JV7169'AND STAMPED T.S. 20440 PG.  THE DISK IS LOCATED 98.0 FT (29.9 M)
 JV7169'NORTHWEST OF A STOP SIGN, 89.0 FT (27.1 M) NORTH OF THE PAVEMENT OF
 JV7169'AMMENDALE ROAD, 71.0 FT (21.6 M) NORTH-NORTHWEST OF A LIGHT AND POWER
 JV7169'POLE GE CO NUMBER 168927.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9946 ***********************************************************************
 HV9946  DESIGNATION -  20441
 HV9946  PID         -  HV9946
 HV9946  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9946  COUNTRY     -  US
 HV9946  USGS QUAD   -  ANACOSTIA (2016)
 HV9946
 HV9946                         *CURRENT SURVEY CONTROL
 HV9946  ______________________________________________________________________
 HV9946* NAD 83(2011) POSITION- 38 47 53.99207(N) 076 57 36.74599(W)   ADJUSTED
 HV9946* NAD 83(2011) ELLIP HT-     6.622 (meters)        (06/27/12)   ADJUSTED
 HV9946* NAD 83(2011) EPOCH   -  2010.00
 HV9946* NAVD 88 ORTHO HEIGHT -    39.0   (meters)      128.    (feet) GPS OBS
 HV9946  ______________________________________________________________________
 HV9946  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9946  GEOID HEIGHT    -        -32.740 (meters)                     GEOID93
 HV9946  GEOID HEIGHT    -        -32.375 (meters)                     GEOID18
 HV9946  NAD 83(2011) X  -  1,123,037.371 (meters)                     COMP
 HV9946  NAD 83(2011) Y  - -4,849,042.055 (meters)                     COMP
 HV9946  NAD 83(2011) Z  -  3,974,897.685 (meters)                     COMP
 HV9946  LAPLACE CORR    -         -3.69  (seconds)                    DEFLEC18
 HV9946
 HV9946  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9946  Standards:
 HV9946         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9946            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9946  -------------------------------------------------------------------
 HV9946  NETWORK    0.94   2.21           0.40   0.37   1.13     -0.02079056
 HV9946  -------------------------------------------------------------------
 HV9946  Click here for local accuracies and other accuracy information.
 HV9946
 HV9946.The horizontal coordinates were established by GPS observations
 HV9946.and adjusted by the National Geodetic Survey in June 2012.
 HV9946
 HV9946.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9946.been affixed to the stable North American tectonic plate. See 
 HV9946.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9946
 HV9946.The horizontal coordinates are valid at the epoch date displayed above
 HV9946.which is a decimal equivalence of Year/Month/Day.
 HV9946
 HV9946.The orthometric height was determined by GPS observations and a
 HV9946.high-resolution geoid model.
 HV9946
 HV9946.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9946.GEOID18 height accuracy estimate available here.
 HV9946
 HV9946.Click photographs - Photos may exist for this station.
 HV9946
 HV9946.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9946
 HV9946.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9946
 HV9946.The ellipsoidal height was determined by GPS observations
 HV9946.and is referenced to NAD 83.
 HV9946
 HV9946. The following values were computed from the NAD 83(2011) position.
 HV9946
 HV9946;                    North         East     Units Scale Factor Converg.
 HV9946;SPC MD       -   125,620.092   403,456.699   MT  0.99995076   +0 01 29.9
 HV9946;SPC MD       -   412,138.59  1,323,674.19   sFT  0.99995076   +0 01 29.9
 HV9946;SPC VA N     - 2,126,735.846 3,633,752.016   MT  0.99995335   +0 57 39.6
 HV9946;SPC VA N     - 6,977,465.85 11,921,734.74   sFT  0.99995335   +0 57 39.6
 HV9946;UTM  18      - 4,296,222.491   329,774.229   MT  0.99995683   -1 13 42.7
 HV9946
 HV9946!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9946!SPC MD       -   0.99999896  x   0.99995076  =   0.99994972
 HV9946!SPC VA N     -   0.99999896  x   0.99995335  =   0.99995231
 HV9946!UTM  18      -   0.99999896  x   0.99995683  =   0.99995579
 HV9946
 HV9946_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2977496222(NAD 83)
 HV9946
 HV9946                          SUPERSEDED SURVEY CONTROL
 HV9946
 HV9946  NAD 83(2007)-  38 47 53.99261(N)    076 57 36.74680(W) AD(2002.00) 0
 HV9946  ELLIP H (02/10/07)    6.624  (m)                       GP(2002.00)    
 HV9946  ELLIP H (08/30/02)    6.625  (m)                       GP(       ) 4 2
 HV9946  ELLIP H (09/09/94)    6.616  (m)                       GP(       ) 4 1
 HV9946  NAD 83(1991)-  38 47 53.99263(N)    076 57 36.74747(W) AD(       ) 1
 HV9946
 HV9946.Superseded values are not recommended for survey control.
 HV9946
 HV9946.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9946.See file dsdata.pdf to determine how the superseded data were derived.
 HV9946
 HV9946_MARKER: DD = SURVEY DISK
 HV9946_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9946_STAMPING: T.S. 20441 PG
 HV9946_MARK LOGO: WSSC
 HV9946_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9946_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9946+STABILITY: SURFACE MOTION
 HV9946_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9946+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9946
 HV9946  HISTORY     - Date     Condition        Report By
 HV9946  HISTORY     - 1993     MONUMENTED       MSI
 HV9946  HISTORY     - 20050514 GOOD             GEOCAC
 HV9946
 HV9946                          STATION DESCRIPTION
 HV9946
 HV9946'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9946'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9946'APPROXIMATELY 2.4 MI (3.9 KM) EAST OF THE TOWN OF FOREST HEIGHTS AT
 HV9946'THE ROSECRAFT RACEWAY GROUNDS. TO REACH THE STATION FROM THE
 HV9946'INTERSECTION OF BARNABAS ROAD (S.R 414) AND BRINKLY ROAD, PROCEED
 HV9946'EAST ALONG BRINKLY ROAD FOR 0.2 MI (0.3 KM) TO THE INTERSECTION WITH
 HV9946'ROSECROFT DRIVE.  TURN RIGHT AND TRAVEL SOUTH ALONG ROSECROFT FOR 0.7
 HV9946'MI (1.1 KM) TO A SIDE ROAD ON THE LEFT.  TURN LEFT AND TRAVEL EAST
 HV9946'FOR 0.1 MI (0.2 KM) TO THE STATION ON THE LEFT.
 HV9946'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9946'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9946'T.S. 20441 PG.  THE DISK IS LOCATED 8.5 FT (2.6 M) SOUTH OF A
 HV9946'FENCE, 36.5 FT (11.1 M) WEST OF THE SOUTHWEST CORNER OF THE FENCE
 HV9946'SURROUNDING TRANSFORMER AND 25.5 FT (7.8 M) NORTH OF THE CENTER LINE
 HV9946'OF THE PAVED ROAD.
 HV9946
 HV9946                          STATION RECOVERY (2005)
 HV9946
 HV9946'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV9946'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9947 ***********************************************************************
 HV9947  DESIGNATION -  20442
 HV9947  PID         -  HV9947
 HV9947  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9947  COUNTRY     -  US
 HV9947  USGS QUAD   -  LANHAM (2016)
 HV9947
 HV9947                         *CURRENT SURVEY CONTROL
 HV9947  ______________________________________________________________________
 HV9947* NAD 83(2011) POSITION- 38 56 42.29408(N) 076 51 13.98855(W)   ADJUSTED
 HV9947* NAD 83(2011) ELLIP HT-    24.295 (meters)        (06/27/12)   ADJUSTED
 HV9947* NAD 83(2011) EPOCH   -  2010.00
 HV9947* NAVD 88 ORTHO HEIGHT -    56.7   (meters)      186.    (feet) GPS OBS
 HV9947  ______________________________________________________________________
 HV9947  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9947  GEOID HEIGHT    -        -32.760 (meters)                     GEOID93
 HV9947  GEOID HEIGHT    -        -32.400 (meters)                     GEOID18
 HV9947  NAD 83(2011) X  -  1,129,711.429 (meters)                     COMP
 HV9947  NAD 83(2011) Y  - -4,837,007.022 (meters)                     COMP
 HV9947  NAD 83(2011) Z  -  3,987,592.388 (meters)                     COMP
 HV9947  LAPLACE CORR    -         -5.08  (seconds)                    DEFLEC18
 HV9947
 HV9947  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9947  Standards:
 HV9947         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9947            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9947  -------------------------------------------------------------------
 HV9947  NETWORK    1.31   2.74           0.55   0.52   1.40      0.16813780
 HV9947  -------------------------------------------------------------------
 HV9947  Click here for local accuracies and other accuracy information.
 HV9947
 HV9947.The horizontal coordinates were established by GPS observations
 HV9947.and adjusted by the National Geodetic Survey in June 2012.
 HV9947
 HV9947.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9947.been affixed to the stable North American tectonic plate. See 
 HV9947.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9947
 HV9947.The horizontal coordinates are valid at the epoch date displayed above
 HV9947.which is a decimal equivalence of Year/Month/Day.
 HV9947
 HV9947.The orthometric height was determined by GPS observations and a
 HV9947.high-resolution geoid model.
 HV9947
 HV9947.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9947.GEOID18 height accuracy estimate available here.
 HV9947
 HV9947.Click photographs - Photos may exist for this station.
 HV9947
 HV9947.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9947
 HV9947.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9947
 HV9947.The ellipsoidal height was determined by GPS observations
 HV9947.and is referenced to NAD 83.
 HV9947
 HV9947. The following values were computed from the NAD 83(2011) position.
 HV9947
 HV9947;                    North         East     Units Scale Factor Converg.
 HV9947;SPC MD       -   141,919.888   412,666.503   MT  0.99995058   +0 05 30.1
 HV9947;SPC MD       -   465,615.50  1,353,890.02   sFT  0.99995058   +0 05 30.1
 HV9947;UTM  18      - 4,312,316.384   339,338.817   MT  0.99991785   -1 09 56.0
 HV9947
 HV9947!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9947!SPC MD       -   0.99999619  x   0.99995058  =   0.99994677
 HV9947!UTM  18      -   0.99999619  x   0.99991785  =   0.99991404
 HV9947
 HV9947_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3933812316(NAD 83)
 HV9947
 HV9947                          SUPERSEDED SURVEY CONTROL
 HV9947
 HV9947  NAD 83(2007)-  38 56 42.29442(N)    076 51 13.98935(W) AD(2002.00) 0
 HV9947  ELLIP H (02/10/07)   24.318  (m)                       GP(2002.00)    
 HV9947  ELLIP H (08/30/02)   24.321  (m)                       GP(       ) 4 2
 HV9947  ELLIP H (09/09/94)   24.268  (m)                       GP(       ) 4 1
 HV9947  NAD 83(1991)-  38 56 42.29445(N)    076 51 13.98956(W) AD(       ) 1
 HV9947
 HV9947.Superseded values are not recommended for survey control.
 HV9947
 HV9947.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9947.See file dsdata.pdf to determine how the superseded data were derived.
 HV9947
 HV9947_MARKER: DD = SURVEY DISK
 HV9947_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9947_STAMPING: T.S. 20442 PG
 HV9947_MARK LOGO: WSSC
 HV9947_PROJECTION: FLUSH
 HV9947_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9947_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9947+STABILITY: SURFACE MOTION
 HV9947_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9947+SATELLITE: SATELLITE OBSERVATIONS - November 12, 2015
 HV9947
 HV9947  HISTORY     - Date     Condition        Report By
 HV9947  HISTORY     - 1993     MONUMENTED       MSI
 HV9947  HISTORY     - 20151112 GOOD             BASE9
 HV9947
 HV9947                          STATION DESCRIPTION
 HV9947
 HV9947'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9947'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9947'APPROXIMATELY 1.1 MI (1.8 KM) NORTH OF THE TOWN OF GLENARDEN.  TO
 HV9947'REACH THE STATION FROM THE INTERSECTION OF MARTIN LUTHER KING JR.
 HV9947'HIGHWAY (S.R. 704) AND WHITFIELD CHAPEL ROAD, PROCEED NORTH ALONG
 HV9947'WHITFIELD CHAPEL ROAD FOR 0.3 MI (0.5 KM) TO THE STATION ON THE
 HV9947'RIGHT.
 HV9947'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9947'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9947'T.S. 20442 PG.  THE DISK IS LOCATED 33.4 FT (10.2 M) EAST OF THE
 HV9947'CENTERLINE OF WHITFIELD CHAPEL ROAD, 20.5 FT (6.2 M) NORTHWEST OF A
 HV9947'POWER POLE AND 49.3 FT (15.0 M) NORTH-NORTHEAST OF A CATCH BASIN.
 HV9947
 HV9947                          STATION RECOVERY (2015)
 HV9947
 HV9947'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2015 (DRD)
 HV9947'THE MARK IS 3.29 M (10.8 FT) EAST OF THE WEST FACE OF THE CURB ALONG
 HV9947'WHITFIELD CHAPEL ROAD.  THE POWER POLE MENTIONED IN THE 1993
 HV9947'DESCRIPTION IS DESIGNATED BG+E 330801.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7170 ***********************************************************************
 JV7170  DESIGNATION -  20443
 JV7170  PID         -  JV7170
 JV7170  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7170  COUNTRY     -  US
 JV7170  USGS QUAD   -  BELTSVILLE (2016)
 JV7170
 JV7170                         *CURRENT SURVEY CONTROL
 JV7170  ______________________________________________________________________
 JV7170* NAD 83(2011) POSITION- 39 04 55.99798(N) 076 54 08.18709(W)   ADJUSTED
 JV7170* NAD 83(2011) ELLIP HT-    69.629 (meters)        (06/27/12)   ADJUSTED
 JV7170* NAD 83(2011) EPOCH   -  2010.00
 JV7170* NAVD 88 ORTHO HEIGHT -   101.8   (meters)      334.    (feet) GPS OBS
 JV7170  ______________________________________________________________________
 JV7170  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7170  GEOID HEIGHT    -        -32.500 (meters)                     GEOID93
 JV7170  GEOID HEIGHT    -        -32.140 (meters)                     GEOID18
 JV7170  NAD 83(2011) X  -  1,123,462.093 (meters)                     COMP
 JV7170  NAD 83(2011) Y  - -4,828,658.921 (meters)                     COMP
 JV7170  NAD 83(2011) Z  -  3,999,450.538 (meters)                     COMP
 JV7170  LAPLACE CORR    -         -4.02  (seconds)                    DEFLEC18
 JV7170
 JV7170  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7170  Standards:
 JV7170         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7170            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7170  -------------------------------------------------------------------
 JV7170  NETWORK    1.12   2.33           0.48   0.43   1.19      0.01467030
 JV7170  -------------------------------------------------------------------
 JV7170  Click here for local accuracies and other accuracy information.
 JV7170
 JV7170.The horizontal coordinates were established by GPS observations
 JV7170.and adjusted by the National Geodetic Survey in June 2012.
 JV7170
 JV7170.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7170.been affixed to the stable North American tectonic plate. See 
 JV7170.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7170
 JV7170.The horizontal coordinates are valid at the epoch date displayed above
 JV7170.which is a decimal equivalence of Year/Month/Day.
 JV7170
 JV7170.The orthometric height was determined by GPS observations and a
 JV7170.high-resolution geoid model.
 JV7170
 JV7170.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7170.GEOID18 height accuracy estimate available here.
 JV7170
 JV7170.Click photographs - Photos may exist for this station.
 JV7170
 JV7170.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7170
 JV7170.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7170
 JV7170.The ellipsoidal height was determined by GPS observations
 JV7170.and is referenced to NAD 83.
 JV7170
 JV7170. The following values were computed from the NAD 83(2011) position.
 JV7170
 JV7170;                    North         East     Units Scale Factor Converg.
 JV7170;SPC MD       -   157,138.257   408,455.458   MT  0.99995632   +0 03 40.8
 JV7170;SPC MD       -   515,544.43  1,340,074.28   sFT  0.99995632   +0 03 40.8
 JV7170;UTM  18      - 4,327,623.188   335,463.285   MT  0.99993336   -1 11 58.3
 JV7170
 JV7170!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7170!SPC MD       -   0.99998908  x   0.99995632  =   0.99994540
 JV7170!UTM  18      -   0.99998908  x   0.99993336  =   0.99992244
 JV7170
 JV7170_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3546327623(NAD 83)
 JV7170
 JV7170                          SUPERSEDED SURVEY CONTROL
 JV7170
 JV7170  NAD 83(2007)-  39 04 55.99820(N)    076 54 08.18785(W) AD(2002.00) 0
 JV7170  ELLIP H (02/10/07)   69.653  (m)                       GP(2002.00)    
 JV7170  ELLIP H (08/30/02)   69.670  (m)                       GP(       ) 4 2
 JV7170  ELLIP H (09/09/94)   69.588  (m)                       GP(       ) 4 1
 JV7170  NAD 83(1991)-  39 04 55.99808(N)    076 54 08.18779(W) AD(       ) 1
 JV7170
 JV7170.Superseded values are not recommended for survey control.
 JV7170
 JV7170.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7170.See file dsdata.pdf to determine how the superseded data were derived.
 JV7170
 JV7170_MARKER: DD = SURVEY DISK
 JV7170_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7170_STAMPING: T.S. 20443 PG
 JV7170_MARK LOGO: WSSC
 JV7170_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7170_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7170+STABILITY: SURFACE MOTION
 JV7170_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7170+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2009
 JV7170
 JV7170  HISTORY     - Date     Condition        Report By
 JV7170  HISTORY     - 1993     MONUMENTED       MSI
 JV7170  HISTORY     - 20091129 GOOD             NGS
 JV7170
 JV7170                          STATION DESCRIPTION
 JV7170
 JV7170'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7170'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7170'APPROXIMATELY 2.6 MI (4.2 KM) SOUTHWEST OF THE TOWN OF LAUREL.  TO
 JV7170'REACH THE STATION FROM THE INTERSECTION OF SANDY SPRING ROAD (S.R.
 JV7170'198) AND OLD GUNPOWDER ROAD, PROCEED SOUTH ALONG OLD GUNPOWDER ROAD
 JV7170'FOR 1.6 MI (2.6 KM) TO THE INTERSECTION WITH VAN DUSEN ROAD.  TURN
 JV7170'LEFT AND TRAVEL EAST ALONG VAN DUSEN ROAD FOR 0.9 MI (1.4 KM) TO THE
 JV7170'STATION ON THE RIGHT AND IN FRONT OF THE SIGN CAPITAL CONCRETE PIPE
 JV7170'CO. INC.
 JV7170'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7170'MONUMENT, APPROXIMATELY 0.03 M (0.10 FT) ABOVE THE GROUND SURFACE,
 JV7170'AND STAMPED T.S. 20443 PG.  THE DISK IS LOCATED 64.0 FT (19.5 M)
 JV7170'NORTH-NORTHEAST OF THE SIGN CAPITAL CONCRETE CO. INC., 42.8 FT
 JV7170'(13.0 M) NORTH-NORTHWEST OF THE CENTERLINE OF VAN DUSEN ROAD AND 82.7
 JV7170'FT (25.2 M) WEST-SOUTHWEST OF POWER POLE NUMBER 26.
 JV7170
 JV7170                          STATION RECOVERY (2009)
 JV7170
 JV7170'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV7170'THE SIGN CAPITAL CONCRETE CO. IN., IS GONE AND THE MARK IS NOW
 JV7170'SLIGHTLY BELOW GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7171 ***********************************************************************
 JV7171  DESIGNATION -  20444
 JV7171  PID         -  JV7171
 JV7171  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7171  COUNTRY     -  US
 JV7171  USGS QUAD   -  BELTSVILLE (2016)
 JV7171
 JV7171                         *CURRENT SURVEY CONTROL
 JV7171  ______________________________________________________________________
 JV7171* NAD 83(2011) POSITION- 39 04 34.77526(N) 076 52 35.11053(W)   ADJUSTED
 JV7171* NAD 83(2011) ELLIP HT-    38.517 (meters)        (06/27/12)   ADJUSTED
 JV7171* NAD 83(2011) EPOCH   -  2010.00
 JV7171* NAVD 88 ORTHO HEIGHT -    70.7   (meters)      232.    (feet) GPS OBS
 JV7171  ______________________________________________________________________
 JV7171  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7171  GEOID HEIGHT    -        -32.570 (meters)                     GEOID93
 JV7171  GEOID HEIGHT    -        -32.200 (meters)                     GEOID18
 JV7171  NAD 83(2011) X  -  1,125,729.093 (meters)                     COMP
 JV7171  NAD 83(2011) Y  - -4,828,529.750 (meters)                     COMP
 JV7171  NAD 83(2011) Z  -  3,998,922.875 (meters)                     COMP
 JV7171  LAPLACE CORR    -         -4.37  (seconds)                    DEFLEC18
 JV7171
 JV7171  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7171  Standards:
 JV7171         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7171            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7171  -------------------------------------------------------------------
 JV7171  NETWORK    1.06   2.23           0.45   0.42   1.14      0.03221869
 JV7171  -------------------------------------------------------------------
 JV7171  Click here for local accuracies and other accuracy information.
 JV7171
 JV7171.The horizontal coordinates were established by GPS observations
 JV7171.and adjusted by the National Geodetic Survey in June 2012.
 JV7171
 JV7171.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7171.been affixed to the stable North American tectonic plate. See 
 JV7171.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7171
 JV7171.The horizontal coordinates are valid at the epoch date displayed above
 JV7171.which is a decimal equivalence of Year/Month/Day.
 JV7171
 JV7171.The orthometric height was determined by GPS observations and a
 JV7171.high-resolution geoid model.
 JV7171
 JV7171.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7171.GEOID18 height accuracy estimate available here.
 JV7171
 JV7171.Click photographs - Photos may exist for this station.
 JV7171
 JV7171.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7171
 JV7171.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7171
 JV7171.The ellipsoidal height was determined by GPS observations
 JV7171.and is referenced to NAD 83.
 JV7171
 JV7171. The following values were computed from the NAD 83(2011) position.
 JV7171
 JV7171;                    North         East     Units Scale Factor Converg.
 JV7171;SPC MD       -   156,486.530   410,693.341   MT  0.99995595   +0 04 39.2
 JV7171;SPC MD       -   513,406.22  1,347,416.40   sFT  0.99995595   +0 04 39.2
 JV7171;UTM  18      - 4,326,922.399   337,686.226   MT  0.99992441   -1 10 59.0
 JV7171
 JV7171!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7171!SPC MD       -   0.99999396  x   0.99995595  =   0.99994991
 JV7171!UTM  18      -   0.99999396  x   0.99992441  =   0.99991837
 JV7171
 JV7171_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3768626922(NAD 83)
 JV7171
 JV7171                          SUPERSEDED SURVEY CONTROL
 JV7171
 JV7171  NAD 83(2007)-  39 04 34.77548(N)    076 52 35.11129(W) AD(2002.00) 0
 JV7171  ELLIP H (02/10/07)   38.541  (m)                       GP(2002.00)    
 JV7171  ELLIP H (08/30/02)   38.557  (m)                       GP(       ) 4 2
 JV7171  ELLIP H (09/09/94)   38.475  (m)                       GP(       ) 4 1
 JV7171  NAD 83(1991)-  39 04 34.77536(N)    076 52 35.11127(W) AD(       ) 1
 JV7171
 JV7171.Superseded values are not recommended for survey control.
 JV7171
 JV7171.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7171.See file dsdata.pdf to determine how the superseded data were derived.
 JV7171
 JV7171_MARKER: DD = SURVEY DISK
 JV7171_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7171_STAMPING: T.S. 20444 PG
 JV7171_MARK LOGO: WSSC
 JV7171_PROJECTION: FLUSH
 JV7171_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7171_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7171+STABILITY: SURFACE MOTION
 JV7171_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7171+SATELLITE: SATELLITE OBSERVATIONS - November 11, 2012
 JV7171
 JV7171  HISTORY     - Date     Condition        Report By
 JV7171  HISTORY     - 1993     MONUMENTED       MSI
 JV7171  HISTORY     - 20121111 GOOD             NGS
 JV7171
 JV7171                          STATION DESCRIPTION
 JV7171
 JV7171'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7171'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7171'APPROXIMATELY 1.6 MI (2.6 KM) WEST OF THE TOWN OF LAUREL.  TO REACH
 JV7171'THE STATION FROM THE INTERSECTION OF CONTEE ROAD AND BALTIMORE AVENUE
 JV7171'(U.S. 1), PROCEED SOUTHWEST ALONG BALTIMORE AVENUE FOR 0.4 MI
 JV7171'(0.6 KM) TO THE ENTRANCE OF THE MARYLAND NATIONAL MEMORIAL PARK.
 JV7171'TURN RIGHT AND TRAVEL ALONG THE THE MAIN ROAD THROUGH THE PARK FOR
 JV7171'0.4 MI (0.6 KM) TO THE STATION ON A CIRCULAR GRASS ISLAND.
 JV7171'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7171'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7171'T.S. 20444 PG.  THE DISK IS LOCATED 116.2 FT (35.4 M) SOUTHEAST OF
 JV7171'THE SIGN ST. PAUL, 68.0 FT (20.7 M) NORTHEAST OF THE SIGN VAN
 JV7171'BUREN AND 12.0 FT (3.7 M) NORTH OF THE EDGE OF THE ROAD.
 JV7171
 JV7171                          STATION RECOVERY (2012)
 JV7171
 JV7171'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (DRD)
 JV7171'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9948 ***********************************************************************
 HV9948  DESIGNATION -  20445
 HV9948  PID         -  HV9948
 HV9948  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9948  COUNTRY     -  US
 HV9948  USGS QUAD   -  ANACOSTIA (2016)
 HV9948
 HV9948                         *CURRENT SURVEY CONTROL
 HV9948  ______________________________________________________________________
 HV9948* NAD 83(2011) POSITION- 38 47 02.92976(N) 076 54 30.55289(W)   ADJUSTED
 HV9948* NAD 83(2011) ELLIP HT-    43.993 (meters)        (06/27/12)   ADJUSTED
 HV9948* NAD 83(2011) EPOCH   -  2010.00
 HV9948* NAVD 88 ORTHO HEIGHT -    76.5   (meters)      251.    (feet) GPS OBS
 HV9948  ______________________________________________________________________
 HV9948  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9948  GEOID HEIGHT    -        -32.880 (meters)                     GEOID93
 HV9948  GEOID HEIGHT    -        -32.511 (meters)                     GEOID18
 HV9948  NAD 83(2011) X  -  1,127,644.130 (meters)                     COMP
 HV9948  NAD 83(2011) Y  - -4,849,015.515 (meters)                     COMP
 HV9948  NAD 83(2011) Z  -  3,973,693.808 (meters)                     COMP
 HV9948  LAPLACE CORR    -         -4.63  (seconds)                    DEFLEC18
 HV9948
 HV9948  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9948  Standards:
 HV9948         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9948            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9948  -------------------------------------------------------------------
 HV9948  NETWORK    1.14   2.45           0.50   0.42   1.25      0.13402459
 HV9948  -------------------------------------------------------------------
 HV9948  Click here for local accuracies and other accuracy information.
 HV9948
 HV9948.The horizontal coordinates were established by GPS observations
 HV9948.and adjusted by the National Geodetic Survey in June 2012.
 HV9948
 HV9948.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9948.been affixed to the stable North American tectonic plate. See 
 HV9948.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9948
 HV9948.The horizontal coordinates are valid at the epoch date displayed above
 HV9948.which is a decimal equivalence of Year/Month/Day.
 HV9948
 HV9948.The orthometric height was determined by GPS observations and a
 HV9948.high-resolution geoid model.
 HV9948
 HV9948.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9948.GEOID18 height accuracy estimate available here.
 HV9948
 HV9948.Click photographs - Photos may exist for this station.
 HV9948
 HV9948.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9948
 HV9948.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9948
 HV9948.The ellipsoidal height was determined by GPS observations
 HV9948.and is referenced to NAD 83.
 HV9948
 HV9948. The following values were computed from the NAD 83(2011) position.
 HV9948
 HV9948;                    North         East     Units Scale Factor Converg.
 HV9948;SPC MD       -   124,048.817   407,951.090   MT  0.99995112   +0 03 26.8
 HV9948;SPC MD       -   406,983.49  1,338,419.53   sFT  0.99995112   +0 03 26.8
 HV9948;UTM  18      - 4,294,553.292   334,233.161   MT  0.99993838   -1 11 44.6
 HV9948
 HV9948!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9948!SPC MD       -   0.99999310  x   0.99995112  =   0.99994422
 HV9948!UTM  18      -   0.99999310  x   0.99993838  =   0.99993148
 HV9948
 HV9948_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3423394553(NAD 83)
 HV9948
 HV9948                          SUPERSEDED SURVEY CONTROL
 HV9948
 HV9948  NAD 83(2007)-  38 47 02.93015(N)    076 54 30.55390(W) AD(2002.00) 0
 HV9948  ELLIP H (02/10/07)   43.983  (m)                       GP(2002.00)    
 HV9948  ELLIP H (08/30/02)   43.977  (m)                       GP(       ) 4 2
 HV9948  NAD 83(1993)-  38 47 02.93027(N)    076 54 30.55425(W) AD(       ) 1
 HV9948  ELLIP H (11/14/94)   43.987  (m)                       GP(       ) 4 2
 HV9948  ELLIP H (09/09/94)   43.976  (m)                       GP(       ) 4 1
 HV9948  NAD 83(1991)-  38 47 02.93019(N)    076 54 30.55455(W) AD(       ) 1
 HV9948
 HV9948.Superseded values are not recommended for survey control.
 HV9948
 HV9948.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9948.See file dsdata.pdf to determine how the superseded data were derived.
 HV9948
 HV9948_MARKER: DD = SURVEY DISK
 HV9948_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9948_STAMPING: T.S. 20445 PG
 HV9948_MARK LOGO: WSSC
 HV9948_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9948_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9948+STABILITY: SURFACE MOTION
 HV9948_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9948+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9948
 HV9948  HISTORY     - Date     Condition        Report By
 HV9948  HISTORY     - 1993     MONUMENTED       MSI
 HV9948
 HV9948                          STATION DESCRIPTION
 HV9948
 HV9948'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9948'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9948'APPROXIMATELY 3.3 MI (5.3 KM) SOUTHWEST OF THE TOWN OF MORNINGSIDE.
 HV9948'TO REACH THE STATION FROM THE INTERSECTION OF BRANCH AVENUE (S.R. 5)
 HV9948'AND KIRBY ROAD, PROCEED WEST ALONG KIRBY ROAD FOR 0.6 MI (1.0 KM) TO
 HV9948'THE INTERSECTION WITH OGDEN DRIVE AND THE STATION ON THE RIGHT.
 HV9948'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9948'MONUMENT, APPROXIMATELY 0.08 M (0.26 FT) ABOVE THE GROUND SURFACE,
 HV9948'AND STAMPED T.S. 20445 PG.  THE DISK IS LOCATED 30.5 FT (9.3 M)
 HV9948'EAST OF THE CENTERLINE OF OGDEN DRIVE, 8.9 FT (2.7 M) WEST OF A FENCE
 HV9948'AND 68.0 FT (20.7 M) NORTH OF POWER POLE NUMBER 826346-0215.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9949 ***********************************************************************
 HV9949  DESIGNATION -  20446
 HV9949  PID         -  HV9949
 HV9949  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9949  COUNTRY     -  US
 HV9949  USGS QUAD   -  BOWIE (2016)
 HV9949
 HV9949                         *CURRENT SURVEY CONTROL
 HV9949  ______________________________________________________________________
 HV9949* NAD 83(2011) POSITION- 38 54 55.66030(N) 076 44 50.23411(W)   ADJUSTED
 HV9949* NAD 83(2011) ELLIP HT-     4.405 (meters)        (06/27/12)   ADJUSTED
 HV9949* NAD 83(2011) EPOCH   -  2010.00
 HV9949* NAVD 88 ORTHO HEIGHT -    37.1   (meters)      122.    (feet) GPS OBS
 HV9949  ______________________________________________________________________
 HV9949  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9949  GEOID HEIGHT    -        -33.100 (meters)                     GEOID93
 HV9949  GEOID HEIGHT    -        -32.746 (meters)                     GEOID18
 HV9949  NAD 83(2011) X  -  1,139,178.833 (meters)                     COMP
 HV9949  NAD 83(2011) Y  - -4,836,893.025 (meters)                     COMP
 HV9949  NAD 83(2011) Z  -  3,985,021.883 (meters)                     COMP
 HV9949  LAPLACE CORR    -         -5.93  (seconds)                    DEFLEC18
 HV9949
 HV9949  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9949  Standards:
 HV9949         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9949            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9949  -------------------------------------------------------------------
 HV9949  NETWORK    1.07   2.23           0.46   0.41   1.14      0.03308679
 HV9949  -------------------------------------------------------------------
 HV9949  Click here for local accuracies and other accuracy information.
 HV9949
 HV9949.The horizontal coordinates were established by GPS observations
 HV9949.and adjusted by the National Geodetic Survey in June 2012.
 HV9949
 HV9949.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9949.been affixed to the stable North American tectonic plate. See 
 HV9949.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9949
 HV9949.The horizontal coordinates are valid at the epoch date displayed above
 HV9949.which is a decimal equivalence of Year/Month/Day.
 HV9949
 HV9949.The orthometric height was determined by GPS observations and a
 HV9949.high-resolution geoid model.
 HV9949
 HV9949.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9949.GEOID18 height accuracy estimate available here.
 HV9949
 HV9949.Click photographs - Photos may exist for this station.
 HV9949
 HV9949.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9949
 HV9949.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9949
 HV9949.The ellipsoidal height was determined by GPS observations
 HV9949.and is referenced to NAD 83.
 HV9949
 HV9949. The following values were computed from the NAD 83(2011) position.
 HV9949
 HV9949;                    North         East     Units Scale Factor Converg.
 HV9949;SPC MD       -   138,651.956   421,916.501   MT  0.99995009   +0 09 31.0
 HV9949;SPC MD       -   454,893.96  1,384,237.72   sFT  0.99995009   +0 09 31.0
 HV9949;UTM  18      - 4,308,846.522   348,514.449   MT  0.99988258   -1 05 52.1
 HV9949
 HV9949!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9949!SPC MD       -   0.99999931  x   0.99995009  =   0.99994940
 HV9949!UTM  18      -   0.99999931  x   0.99988258  =   0.99988189
 HV9949
 HV9949_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4851408846(NAD 83)
 HV9949
 HV9949                          SUPERSEDED SURVEY CONTROL
 HV9949
 HV9949  NAD 83(2007)-  38 54 55.66062(N)    076 44 50.23495(W) AD(2002.00) 0
 HV9949  ELLIP H (02/10/07)    4.419  (m)                       GP(2002.00)    
 HV9949  ELLIP H (08/30/02)    4.417  (m)                       GP(       ) 4 2
 HV9949  ELLIP H (09/09/94)    4.369  (m)                       GP(       ) 4 1
 HV9949  NAD 83(1991)-  38 54 55.66069(N)    076 44 50.23504(W) AD(       ) 1
 HV9949
 HV9949.Superseded values are not recommended for survey control.
 HV9949
 HV9949.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9949.See file dsdata.pdf to determine how the superseded data were derived.
 HV9949
 HV9949_MARKER: DD = SURVEY DISK
 HV9949_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9949_STAMPING: T.S. 20446 PG
 HV9949_MARK LOGO: WSSC
 HV9949_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9949_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9949+STABILITY: SURFACE MOTION
 HV9949_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9949+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9949
 HV9949  HISTORY     - Date     Condition        Report By
 HV9949  HISTORY     - 1993     MONUMENTED       MSI
 HV9949
 HV9949                          STATION DESCRIPTION
 HV9949
 HV9949'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9949'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, IN THE
 HV9949'SOUTHWEST CORNER OF THE TOWN OF BOWIE.  TO REACH THE STATION FROM THE
 HV9949'INTERSECTION OF CENTRAL AVENUE (S.R. 214) AND CRAIN HIGHWAY (U.S.
 HV9949'301)SOUTH BOUND, PROCEED WEST ALONG CENTRAL AVENUE FOR 0.5 MI
 HV9949'(0.8 KM) TO THE INTERSECTION WITH HALL ROAD.  TURN RIGHT AND TRAVEL
 HV9949'NORTHWEST ALONG HALL ROAD FOR 0.4 MI (0.6 KM) TO THE INTERSECTION
 HV9949'WITH PIN OAK PARKWAY.  TURN RIGHT AND TRAVEL NORTH FOR 0.4 MI
 HV9949'(0.6 KM) TO THE INTERSECTION WITH PEACHTREE LANE.  TURN RIGHT AND
 HV9949'TRAVEL NORTH ALONG PEACHTREE LANE FOR 0.8 MI (1.3 KM) TO THE STATION
 HV9949'ON THE RIGHT.
 HV9949'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9949'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9949'T.S. 20446 PG.  THE DISK IS LOCATED 19.7 FT (6.0 M) NORTH OF THE
 HV9949'CENTERLINE OF PEACHTREE LANE, 26.9 FT (8.2 M) SOUTHWEST OF A POWER
 HV9949'BOX(SW CNR), AND 49.5 FT (15.1 M) EAST OF A FIRE HYDRANT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9950 ***********************************************************************
 HV9950  DESIGNATION -  20447
 HV9950  PID         -  HV9950
 HV9950  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9950  COUNTRY     -  US
 HV9950  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9950
 HV9950                         *CURRENT SURVEY CONTROL
 HV9950  ______________________________________________________________________
 HV9950* NAD 83(2011) POSITION- 38 58 57.72645(N) 076 57 35.48100(W)   ADJUSTED
 HV9950* NAD 83(2011) ELLIP HT-   -11.312 (meters)        (06/27/12)   ADJUSTED
 HV9950* NAD 83(2011) EPOCH   -  2010.00
 HV9950* NAVD 88 ORTHO HEIGHT -    20.8   (meters)       68.    (feet) GPS OBS
 HV9950  ______________________________________________________________________
 HV9950  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9950  GEOID HEIGHT    -        -32.460 (meters)                     GEOID93
 HV9950  GEOID HEIGHT    -        -32.087 (meters)                     GEOID18
 HV9950  NAD 83(2011) X  -  1,120,164.508 (meters)                     COMP
 HV9950  NAD 83(2011) Y  - -4,836,502.691 (meters)                     COMP
 HV9950  NAD 83(2011) Z  -  3,990,817.319 (meters)                     COMP
 HV9950  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 HV9950
 HV9950  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9950  Standards:
 HV9950         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9950            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9950  -------------------------------------------------------------------
 HV9950  NETWORK    1.10   2.43           0.48   0.42   1.24      0.04732844
 HV9950  -------------------------------------------------------------------
 HV9950  Click here for local accuracies and other accuracy information.
 HV9950
 HV9950.The horizontal coordinates were established by GPS observations
 HV9950.and adjusted by the National Geodetic Survey in June 2012.
 HV9950
 HV9950.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9950.been affixed to the stable North American tectonic plate. See 
 HV9950.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9950
 HV9950.The horizontal coordinates are valid at the epoch date displayed above
 HV9950.which is a decimal equivalence of Year/Month/Day.
 HV9950
 HV9950.The orthometric height was determined by GPS observations and a
 HV9950.high-resolution geoid model.
 HV9950
 HV9950.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9950.GEOID18 height accuracy estimate available here.
 HV9950
 HV9950.Click photographs - Photos may exist for this station.
 HV9950
 HV9950.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9950
 HV9950.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9950
 HV9950.The ellipsoidal height was determined by GPS observations
 HV9950.and is referenced to NAD 83.
 HV9950
 HV9950. The following values were computed from the NAD 83(2011) position.
 HV9950
 HV9950;                    North         East     Units Scale Factor Converg.
 HV9950;SPC MD       -   146,086.699   403,478.223   MT  0.99995158   +0 01 30.7
 HV9950;SPC MD       -   479,286.11  1,323,744.80   sFT  0.99995158   +0 01 30.7
 HV9950;UTM  18      - 4,316,683.822   330,244.354   MT  0.99995485   -1 13 59.6
 HV9950
 HV9950!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9950!SPC MD       -   1.00000177  x   0.99995158  =   0.99995335
 HV9950!UTM  18      -   1.00000177  x   0.99995485  =   0.99995662
 HV9950
 HV9950_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3024416683(NAD 83)
 HV9950
 HV9950                          SUPERSEDED SURVEY CONTROL
 HV9950
 HV9950  NAD 83(2007)-  38 58 57.72677(N)    076 57 35.48183(W) AD(2002.00) 0
 HV9950  ELLIP H (02/10/07)  -11.286  (m)                       GP(2002.00)    
 HV9950  ELLIP H (08/30/02)  -11.281  (m)                       GP(       ) 4 2
 HV9950  ELLIP H (09/09/94)  -11.349  (m)                       GP(       ) 4 1
 HV9950  NAD 83(1991)-  38 58 57.72677(N)    076 57 35.48207(W) AD(       ) 1
 HV9950
 HV9950.Superseded values are not recommended for survey control.
 HV9950
 HV9950.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9950.See file dsdata.pdf to determine how the superseded data were derived.
 HV9950
 HV9950_MARKER: DD = SURVEY DISK
 HV9950_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9950_STAMPING: T.S. 20447 PG
 HV9950_MARK LOGO: WSSC
 HV9950_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9950_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9950+STABILITY: SURFACE MOTION
 HV9950_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9950+SATELLITE: SATELLITE OBSERVATIONS - May 13, 2002
 HV9950
 HV9950  HISTORY     - Date     Condition        Report By
 HV9950  HISTORY     - 1993     MONUMENTED       MSI
 HV9950  HISTORY     - 20020513 GOOD             DEWDAV
 HV9950  HISTORY     - 20031113 GOOD             GEOCAC
 HV9950  HISTORY     - 20121111 MARK NOT FOUND   NGS
 HV9950
 HV9950                          STATION DESCRIPTION
 HV9950
 HV9950'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9950'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9950'APPROXIMATELY 2.2 MI (3.5 KM) EAST OF THE TOWN OF TAKOMA PARK.  TO
 HV9950'REACH THE STATION FROM THE INTERSECTION OF EAST WEST HIGHWAY (S.R.
 HV9950'410) AND ADELPHI ROAD, PROCEED NORTH ALONG ADELPHI ROAD FOR 1.3 MI
 HV9950'(2.1 KM) TO THE INTERSECTION WITH STANFORD DRIVE.  TURN LEFT AND
 HV9950'TRAVEL WEST FOR 0.25 MI (0.40 KM) TO THE INTERSECTION WITH WELLS
 HV9950'PARKWAY AND THE ENTRANCE TO UNIVERSITY HILLS NEIGHBORHOOD PARK.  TURN
 HV9950'RIGHT INTO THE PARKING LOT TO THE STATION IS NEAR THE CHILDRENS PLAY
 HV9950'AREA ON THE LEFT.
 HV9950'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9950'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9950'T.S. 20447 PG.  THE DISK IS LOCATED 30.2 FT (9.2 M) NORTH OF A
 HV9950'LIGHT POLE, 59.5 FT (18.1 M) SOUTH-SOUTHEAST OF A LIGHT POLE, AND
 HV9950'16.0 FT (4.9 M) WEST OF THE EDGE OF THE PARKING LOT.
 HV9950
 HV9950                          STATION RECOVERY (2002)
 HV9950
 HV9950'RECOVERY NOTE BY DEWBERRY DAVIS 2002 (KEC)
 HV9950'RECOVERED IN GOOD CONDITION.
 HV9950
 HV9950                          STATION RECOVERY (2003)
 HV9950
 HV9950'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV9950'STATION LOCATED IN THE GRASS DUE WEST OF THE NORTHERN OF TWO HANDICAP
 HV9950'PARKING SPACES.
 HV9950
 HV9950                          STATION RECOVERY (2012)
 HV9950
 HV9950'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (DRD)
 HV9950'AREA OF THE MARK IS NOW COVERED BY A RAISED LEVEL OF MULCH THAT
 HV9950'SUPPORTS PLAYGROUND EQUIPMENT.  DID NOT ATTEMPT TO DIG UP THE MULCHED
 HV9950'AREA TO SEE IF THE MARK WAS STILL THERE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9951 ***********************************************************************
 HV9951  DESIGNATION -  20448
 HV9951  PID         -  HV9951
 HV9951  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9951  COUNTRY     -  US
 HV9951  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9951
 HV9951                         *CURRENT SURVEY CONTROL
 HV9951  ______________________________________________________________________
 HV9951* NAD 83(2011) POSITION- 38 59 19.82408(N) 076 52 42.22593(W)   ADJUSTED
 HV9951* NAD 83(2011) ELLIP HT-     3.460 (meters)        (06/27/12)   ADJUSTED
 HV9951* NAD 83(2011) EPOCH   -  2010.00
 HV9951* NAVD 88 ORTHO HEIGHT -    35.7   (meters)      117.    (feet) GPS OBS
 HV9951  ______________________________________________________________________
 HV9951  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9951  GEOID HEIGHT    -        -32.640 (meters)                     GEOID93
 HV9951  GEOID HEIGHT    -        -32.275 (meters)                     GEOID18
 HV9951  NAD 83(2011) X  -  1,126,944.908 (meters)                     COMP
 HV9951  NAD 83(2011) Y  - -4,834,498.885 (meters)                     COMP
 HV9951  NAD 83(2011) Z  -  3,991,356.295 (meters)                     COMP
 HV9951  LAPLACE CORR    -         -5.04  (seconds)                    DEFLEC18
 HV9951
 HV9951  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9951  Standards:
 HV9951         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9951            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9951  -------------------------------------------------------------------
 HV9951  NETWORK    1.16   2.59           0.47   0.48   1.32      0.04552393
 HV9951  -------------------------------------------------------------------
 HV9951  Click here for local accuracies and other accuracy information.
 HV9951
 HV9951.The horizontal coordinates were established by GPS observations
 HV9951.and adjusted by the National Geodetic Survey in June 2012.
 HV9951
 HV9951.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9951.been affixed to the stable North American tectonic plate. See 
 HV9951.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9951
 HV9951.The horizontal coordinates are valid at the epoch date displayed above
 HV9951.which is a decimal equivalence of Year/Month/Day.
 HV9951
 HV9951.The orthometric height was determined by GPS observations and a
 HV9951.high-resolution geoid model.
 HV9951
 HV9951.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9951.GEOID18 height accuracy estimate available here.
 HV9951
 HV9951.Click photographs - Photos may exist for this station.
 HV9951
 HV9951.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9951
 HV9951.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9951
 HV9951.The ellipsoidal height was determined by GPS observations
 HV9951.and is referenced to NAD 83.
 HV9951
 HV9951. The following values were computed from the NAD 83(2011) position.
 HV9951
 HV9951;                    North         East     Units Scale Factor Converg.
 HV9951;SPC MD       -   146,774.355   410,535.253   MT  0.99995179   +0 04 34.8
 HV9951;SPC MD       -   481,542.20  1,346,897.74   sFT  0.99995179   +0 04 34.8
 HV9951;UTM  18      - 4,317,216.323   337,314.703   MT  0.99992590   -1 10 55.5
 HV9951
 HV9951!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9951!SPC MD       -   0.99999946  x   0.99995179  =   0.99995125
 HV9951!UTM  18      -   0.99999946  x   0.99992590  =   0.99992536
 HV9951
 HV9951_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3731417216(NAD 83)
 HV9951
 HV9951                          SUPERSEDED SURVEY CONTROL
 HV9951
 HV9951  NAD 83(2007)-  38 59 19.82437(N)    076 52 42.22672(W) AD(2002.00) 0
 HV9951  ELLIP H (02/10/07)    3.485  (m)                       GP(2002.00)    
 HV9951  ELLIP H (08/30/02)    3.495  (m)                       GP(       ) 4 2
 HV9951  ELLIP H (09/09/94)    3.426  (m)                       GP(       ) 4 1
 HV9951  NAD 83(1991)-  38 59 19.82438(N)    076 52 42.22692(W) AD(       ) 1
 HV9951
 HV9951.Superseded values are not recommended for survey control.
 HV9951
 HV9951.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9951.See file dsdata.pdf to determine how the superseded data were derived.
 HV9951
 HV9951_MARKER: DD = SURVEY DISK
 HV9951_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9951_STAMPING: T.S. 20448 PG
 HV9951_MARK LOGO: WSSC
 HV9951_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9951_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9951+STABILITY: SURFACE MOTION
 HV9951_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9951+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9951
 HV9951  HISTORY     - Date     Condition        Report By
 HV9951  HISTORY     - 1993     MONUMENTED       MSI
 HV9951
 HV9951                          STATION DESCRIPTION
 HV9951
 HV9951'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9951'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9951'APPROXIMATELY 1.6 MI (2.6 KM) NORTH OF THE TOWN OF NEW CARROLLTON.
 HV9951'TO REACH THE STATION FROM THE INTERSECTION OF KENILWORTH AVENUE
 HV9951'(S.R. 201) AND GREENBELT ROAD (S.R. 193), PROCEED EAST ALONG
 HV9951'GREENBELT ROAD FOR 1.4 MI (2.3 KM) TO THE INTERSECTION WITH HANOVER
 HV9951'PARKWAY. TURN RIGHT AND TRAVEL SOUTHWEST ALONG HANOVER PARKWAY FOR
 HV9951'0.45 MI (0.72 KM) TO THE STATION ON THE RIGHT.
 HV9951'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9951'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9951'T.S. 20448 PG.  THE DISK IS LOCATED 34.0 FT (10.4 M) NORTH OF POWER
 HV9951'POLE NUMBER 5175, 78.5 FT (23.9 M) SOUTH OF POWER POLE NUMBER 4784,
 HV9951'AND 19.0 FT (5.8 M) WEST OF THE CURB ALONG HANOVER PARKWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7172 ***********************************************************************
 JV7172  DESIGNATION -  20449
 JV7172  PID         -  JV7172
 JV7172  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7172  COUNTRY     -  US
 JV7172  USGS QUAD   -  BELTSVILLE (2016)
 JV7172
 JV7172                         *CURRENT SURVEY CONTROL
 JV7172  ______________________________________________________________________
 JV7172* NAD 83(2011) POSITION- 39 00 55.37946(N) 076 54 32.30464(W)   ADJUSTED
 JV7172* NAD 83(2011) ELLIP HT-     3.829 (meters)        (06/27/12)   ADJUSTED
 JV7172* NAD 83(2011) EPOCH   -  2010.00
 JV7172* NAVD 88 ORTHO HEIGHT -    36.0   (meters)      118.    (feet) GPS OBS
 JV7172  ______________________________________________________________________
 JV7172  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7172  GEOID HEIGHT    -        -32.540 (meters)                     GEOID93
 JV7172  GEOID HEIGHT    -        -32.171 (meters)                     GEOID18
 JV7172  NAD 83(2011) X  -  1,123,944.710 (meters)                     COMP
 JV7172  NAD 83(2011) Y  - -4,833,293.590 (meters)                     COMP
 JV7172  NAD 83(2011) Z  -  3,993,646.478 (meters)                     COMP
 JV7172  LAPLACE CORR    -         -4.68  (seconds)                    DEFLEC18
 JV7172
 JV7172  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7172  Standards:
 JV7172         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7172            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7172  -------------------------------------------------------------------
 JV7172  NETWORK    1.09   2.31           0.44   0.45   1.18     -0.00177520
 JV7172  -------------------------------------------------------------------
 JV7172  Click here for local accuracies and other accuracy information.
 JV7172
 JV7172.The horizontal coordinates were established by GPS observations
 JV7172.and adjusted by the National Geodetic Survey in June 2012.
 JV7172
 JV7172.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7172.been affixed to the stable North American tectonic plate. See 
 JV7172.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7172
 JV7172.The horizontal coordinates are valid at the epoch date displayed above
 JV7172.which is a decimal equivalence of Year/Month/Day.
 JV7172
 JV7172.The orthometric height was determined by GPS observations and a
 JV7172.high-resolution geoid model.
 JV7172
 JV7172.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7172.GEOID18 height accuracy estimate available here.
 JV7172
 JV7172.Click photographs - Photos may exist for this station.
 JV7172
 JV7172.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7172
 JV7172.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7172
 JV7172.The ellipsoidal height was determined by GPS observations
 JV7172.and is referenced to NAD 83.
 JV7172
 JV7172. The following values were computed from the NAD 83(2011) position.
 JV7172
 JV7172;                    North         East     Units Scale Factor Converg.
 JV7172;SPC MD       -   149,717.831   407,883.216   MT  0.99995281   +0 03 25.7
 JV7172;SPC MD       -   491,199.25  1,338,196.85   sFT  0.99995281   +0 03 25.7
 JV7172;UTM  18      - 4,320,217.285   334,728.024   MT  0.99993635   -1 12 07.3
 JV7172
 JV7172!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7172!SPC MD       -   0.99999940  x   0.99995281  =   0.99995221
 JV7172!UTM  18      -   0.99999940  x   0.99993635  =   0.99993575
 JV7172
 JV7172_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3472820217(NAD 83)
 JV7172
 JV7172                          SUPERSEDED SURVEY CONTROL
 JV7172
 JV7172  NAD 83(2007)-  39 00 55.37975(N)    076 54 32.30544(W) AD(2002.00) 0
 JV7172  ELLIP H (02/10/07)    3.855  (m)                       GP(2002.00)    
 JV7172  ELLIP H (08/30/02)    3.864  (m)                       GP(       ) 4 2
 JV7172  ELLIP H (09/09/94)    3.790  (m)                       GP(       ) 4 1
 JV7172  NAD 83(1991)-  39 00 55.37972(N)    076 54 32.30558(W) AD(       ) 1
 JV7172
 JV7172.Superseded values are not recommended for survey control.
 JV7172
 JV7172.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7172.See file dsdata.pdf to determine how the superseded data were derived.
 JV7172
 JV7172_MARKER: DD = SURVEY DISK
 JV7172_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7172_STAMPING: T.S. 20449 PG
 JV7172_MARK LOGO: WSSC
 JV7172_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7172_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7172+STABILITY: SURFACE MOTION
 JV7172_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7172+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7172
 JV7172  HISTORY     - Date     Condition        Report By
 JV7172  HISTORY     - 1993     MONUMENTED       MSI
 JV7172
 JV7172                          STATION DESCRIPTION
 JV7172
 JV7172'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV7172'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, IN THE
 JV7172'NORTHEAST CORNER OF THE TOWN OF COLLEGE PARK.  TO REACH THE STATION
 JV7172'FROM THE INTERSECTION OF BALTIMORE AVENUE (U.S. 1) AND CAPITAL
 JV7172'BELTWAY (I.S. 495), PROCEED EAST ALONG CAPITAL BELTWAY FOR 0.9 MI
 JV7172'(1.4 KM) TO WHERE HIGHWAY PASSES OVER RAILWAY.  THE STATION IS IN THE
 JV7172'GRASS MEDIAN OF THE HIGHWAY AND ON THE WEST SIDE OF THE RAILWAY
 JV7172'TRACKS.
 JV7172'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 JV7172'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 JV7172'T.S. 20449 PG.  THE DISK IS LOCATED 19.0 FT (5.8 M) NORTHEAST OF
 JV7172'THE GUARD RAIL ALONG THE INNER LOOP, 17.5 FT (5.3 M) SOUTHWEST OF THE
 JV7172'GUARD RAIL ALONG THE OUTER LOOP, 87.0 FT (26.5 M) SOUTHEAST OF A
 JV7172'STORM DRAIN, AND 1.1 FT (0.3 M) NORTH OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9952 ***********************************************************************
 HV9952  DESIGNATION -  20450
 HV9952  PID         -  HV9952
 HV9952  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9952  COUNTRY     -  US
 HV9952  USGS QUAD   -  ANACOSTIA (2016)
 HV9952
 HV9952                         *CURRENT SURVEY CONTROL
 HV9952  ______________________________________________________________________
 HV9952* NAD 83(2011) POSITION- 38 48 08.07933(N) 076 59 17.17482(W)   ADJUSTED
 HV9952* NAD 83(2011) ELLIP HT-    26.640 (meters)        (06/27/12)   ADJUSTED
 HV9952* NAD 83(2011) EPOCH   -  2010.00
 HV9952* NAVD 88 ORTHO HEIGHT -    58.9   (meters)      193.    (feet) GPS OBS
 HV9952  ______________________________________________________________________
 HV9952  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9952  GEOID HEIGHT    -        -32.680 (meters)                     GEOID93
 HV9952  GEOID HEIGHT    -        -32.315 (meters)                     GEOID18
 HV9952  NAD 83(2011) X  -  1,120,618.500 (meters)                     COMP
 HV9952  NAD 83(2011) Y  - -4,849,338.267 (meters)                     COMP
 HV9952  NAD 83(2011) Z  -  3,975,248.775 (meters)                     COMP
 HV9952  LAPLACE CORR    -         -3.21  (seconds)                    DEFLEC18
 HV9952
 HV9952  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9952  Standards:
 HV9952         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9952            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9952  -------------------------------------------------------------------
 HV9952  NETWORK    0.94   2.23           0.40   0.37   1.14     -0.03046453
 HV9952  -------------------------------------------------------------------
 HV9952  Click here for local accuracies and other accuracy information.
 HV9952
 HV9952.The horizontal coordinates were established by GPS observations
 HV9952.and adjusted by the National Geodetic Survey in June 2012.
 HV9952
 HV9952.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9952.been affixed to the stable North American tectonic plate. See 
 HV9952.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9952
 HV9952.The horizontal coordinates are valid at the epoch date displayed above
 HV9952.which is a decimal equivalence of Year/Month/Day.
 HV9952
 HV9952.The orthometric height was determined by GPS observations and a
 HV9952.high-resolution geoid model.
 HV9952
 HV9952.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9952.GEOID18 height accuracy estimate available here.
 HV9952
 HV9952.Click photographs - Photos may exist for this station.
 HV9952
 HV9952.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9952
 HV9952.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9952
 HV9952.The ellipsoidal height was determined by GPS observations
 HV9952.and is referenced to NAD 83.
 HV9952
 HV9952. The following values were computed from the NAD 83(2011) position.
 HV9952
 HV9952;                    North         East     Units Scale Factor Converg.
 HV9952;SPC MD       -   126,053.788   401,033.309   MT  0.99995067   +0 00 26.9
 HV9952;SPC MD       -   413,561.47  1,315,723.45   sFT  0.99995067   +0 00 26.9
 HV9952;SPC VA N     - 2,127,129.893 3,631,321.857   MT  0.99995357   +0 56 37.0
 HV9952;SPC VA N     - 6,978,758.66 11,913,761.79   sFT  0.99995357   +0 56 37.0
 HV9952;UTM  18      - 4,296,709.104   327,360.880   MT  0.99996702   -1 14 46.0
 HV9952
 HV9952!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9952!SPC MD       -   0.99999582  x   0.99995067  =   0.99994649
 HV9952!SPC VA N     -   0.99999582  x   0.99995357  =   0.99994939
 HV9952!UTM  18      -   0.99999582  x   0.99996702  =   0.99996284
 HV9952
 HV9952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2736096709(NAD 83)
 HV9952
 HV9952                          SUPERSEDED SURVEY CONTROL
 HV9952
 HV9952  NAD 83(2007)-  38 48 08.07990(N)    076 59 17.17562(W) AD(2002.00) 0
 HV9952  ELLIP H (02/10/07)   26.643  (m)                       GP(2002.00)    
 HV9952  ELLIP H (08/30/02)   26.649  (m)                       GP(       ) 4 2
 HV9952  ELLIP H (09/09/94)   26.648  (m)                       GP(       ) 4 1
 HV9952  NAD 83(1991)-  38 48 08.07984(N)    076 59 17.17621(W) AD(       ) 1
 HV9952
 HV9952.Superseded values are not recommended for survey control.
 HV9952
 HV9952.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9952.See file dsdata.pdf to determine how the superseded data were derived.
 HV9952
 HV9952_MARKER: DD = SURVEY DISK
 HV9952_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9952_STAMPING: T.S. 20450 PG
 HV9952_MARK LOGO: WSSC
 HV9952_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9952_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9952+STABILITY: SURFACE MOTION
 HV9952_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9952+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2012
 HV9952
 HV9952  HISTORY     - Date     Condition        Report By
 HV9952  HISTORY     - 1993     MONUMENTED       MSI
 HV9952  HISTORY     - 20120923 GOOD             WOOLPT
 HV9952
 HV9952                          STATION DESCRIPTION
 HV9952
 HV9952'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9952'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9952'APPROXIMATELY 1.0 MI (1.6 KM) SOUTHEAST OF THE TOWN OF FOREST
 HV9952'HEIGHTS. TO REACH THE STATION FROM THE INTERSECTION OF BARNABAS ROAD
 HV9952'(S.R. 414)AND BOCK ROAD, PROCEED NORTHWEST ALONG BOCK ROAD FOR 0.4 MI
 HV9952'(0.6 KM) TO THE INTERSECTION WITH LIVINGSTON ROAD.  TURN RIGHT AND
 HV9952'TRAVEL NORTHWEST ALONG LIVINGSTON ROAD FOR 0.05 MI (0.08 KM) TO THE
 HV9952'STATION ON THE LEFT.
 HV9952'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9952'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9952'T.S. 20450 PG.  THE DISK IS LOCATED 12.5 FT (3.8 M) SOUTHWEST OF
 HV9952'THE STREET CURB, 2.5 FT (0.8 M) NORTHEAST OF A PARKING CURB, AND 20.2
 HV9952'FT (6.2 M) SOUTH-SOUTHEAST OF POWER POLE NUMBER 803352-2782.
 HV9952
 HV9952                          STATION RECOVERY (2012)
 HV9952
 HV9952'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 HV9952'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9953 ***********************************************************************
 HV9953  DESIGNATION -  20451
 HV9953  PID         -  HV9953
 HV9953  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9953  COUNTRY     -  US
 HV9953  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9953
 HV9953                         *CURRENT SURVEY CONTROL
 HV9953  ______________________________________________________________________
 HV9953* NAD 83(2011) POSITION- 38 56 00.29665(N) 076 54 26.38758(W)   ADJUSTED
 HV9953* NAD 83(2011) ELLIP HT-    14.437 (meters)        (06/27/12)   ADJUSTED
 HV9953* NAD 83(2011) EPOCH   -  2010.00
 HV9953* NAVD 88 ORTHO HEIGHT -    46.7   (meters)      153.    (feet) GPS OBS
 HV9953  ______________________________________________________________________
 HV9953  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9953  GEOID HEIGHT    -        -32.640 (meters)                     GEOID93
 HV9953  GEOID HEIGHT    -        -32.276 (meters)                     GEOID18
 HV9953  NAD 83(2011) X  -  1,125,381.737 (meters)                     COMP
 HV9953  NAD 83(2011) Y  - -4,838,844.019 (meters)                     COMP
 HV9953  NAD 83(2011) Z  -  3,986,578.853 (meters)                     COMP
 HV9953  LAPLACE CORR    -         -5.06  (seconds)                    DEFLEC18
 HV9953
 HV9953  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9953  Standards:
 HV9953         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9953            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9953  -------------------------------------------------------------------
 HV9953  NETWORK    1.09   2.33           0.47   0.42   1.19      0.03898532
 HV9953  -------------------------------------------------------------------
 HV9953  Click here for local accuracies and other accuracy information.
 HV9953
 HV9953.The horizontal coordinates were established by GPS observations
 HV9953.and adjusted by the National Geodetic Survey in June 2012.
 HV9953
 HV9953.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9953.been affixed to the stable North American tectonic plate. See 
 HV9953.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9953
 HV9953.The horizontal coordinates are valid at the epoch date displayed above
 HV9953.which is a decimal equivalence of Year/Month/Day.
 HV9953
 HV9953.The orthometric height was determined by GPS observations and a
 HV9953.high-resolution geoid model.
 HV9953
 HV9953.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9953.GEOID18 height accuracy estimate available here.
 HV9953
 HV9953.Click photographs - Photos may exist for this station.
 HV9953
 HV9953.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9953
 HV9953.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9953
 HV9953.The ellipsoidal height was determined by GPS observations
 HV9953.and is referenced to NAD 83.
 HV9953
 HV9953. The following values were computed from the NAD 83(2011) position.
 HV9953
 HV9953;                    North         East     Units Scale Factor Converg.
 HV9953;SPC MD       -   140,618.805   408,034.797   MT  0.99995035   +0 03 29.4
 HV9953;SPC MD       -   461,346.86  1,338,694.16   sFT  0.99995035   +0 03 29.4
 HV9953;UTM  18      - 4,311,117.261   334,679.790   MT  0.99993655   -1 11 55.9
 HV9953
 HV9953!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9953!SPC MD       -   0.99999773  x   0.99995035  =   0.99994808
 HV9953!UTM  18      -   0.99999773  x   0.99993655  =   0.99993429
 HV9953
 HV9953_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3467911117(NAD 83)
 HV9953
 HV9953                          SUPERSEDED SURVEY CONTROL
 HV9953
 HV9953  NAD 83(2007)-  38 56 00.29704(N)    076 54 26.38838(W) AD(2002.00) 0
 HV9953  ELLIP H (02/10/07)   14.460  (m)                       GP(2002.00)    
 HV9953  ELLIP H (08/30/02)   14.459  (m)                       GP(       ) 4 2
 HV9953  ELLIP H (09/09/94)   14.408  (m)                       GP(       ) 4 1
 HV9953  NAD 83(1991)-  38 56 00.29718(N)    076 54 26.38876(W) AD(       ) 1
 HV9953
 HV9953.Superseded values are not recommended for survey control.
 HV9953
 HV9953.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9953.See file dsdata.pdf to determine how the superseded data were derived.
 HV9953
 HV9953_MARKER: DD = SURVEY DISK
 HV9953_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9953_STAMPING: T.S. 20451 PG
 HV9953_MARK LOGO: WSSC
 HV9953_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9953_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9953+STABILITY: SURFACE MOTION
 HV9953_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9953+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9953
 HV9953  HISTORY     - Date     Condition        Report By
 HV9953  HISTORY     - 1993     MONUMENTED       MSI
 HV9953
 HV9953                          STATION DESCRIPTION
 HV9953
 HV9953'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9953'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9953'APPROXIMATELY 0.7 MI (1.1 KM) NORTHEAST OF THE TOWN OF CHEVERLY.  TO
 HV9953'REACH THE STATION FROM THE INTERSECTION OF JOHN HANSON HIGHWAY (U.S.
 HV9953'50) AND LANDOVER ROAD (S.R. 202), PROCEED WEST ALONG LANDOVER ROAD
 HV9953'FOR 0.55 MI (0.89 KM) TO THE INTERSECTION WITH OLD LANDOVER ROAD, AND
 HV9953'THE STATION ON THE RIGHT.
 HV9953'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9953'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9953'T.S. 20451 PG.  THE DISK IS LOCATED 16.0 FT (4.9 M) NORTH-NORTHEAST
 HV9953'OF LANDOVER ROAD (EDGE OF PAVEMENT), 31.3 FT (9.5 M) NORTHWEST OF
 HV9953'POWER POLE NUMBER 826400-3068, AND 51.5 FT (15.7 M) SOUTHEAST OF
 HV9953'POWER POLE NUMBER 826400-2164.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9954 ***********************************************************************
 HV9954  DESIGNATION -  20452
 HV9954  PID         -  HV9954
 HV9954  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9954  COUNTRY     -  US
 HV9954  USGS QUAD   -  ANACOSTIA (2016)
 HV9954
 HV9954                         *CURRENT SURVEY CONTROL
 HV9954  ______________________________________________________________________
 HV9954* NAD 83(2011) POSITION- 38 50 10.00530(N) 076 58 55.27754(W)   ADJUSTED
 HV9954* NAD 83(2011) ELLIP HT-    20.940 (meters)        (06/27/12)   ADJUSTED
 HV9954* NAD 83(2011) EPOCH   -  2010.00
 HV9954* NAVD 88 ORTHO HEIGHT -    53.2   (meters)      175.    (feet) GPS OBS
 HV9954  ______________________________________________________________________
 HV9954  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9954  GEOID HEIGHT    -        -32.630 (meters)                     GEOID93
 HV9954  GEOID HEIGHT    -        -32.261 (meters)                     GEOID18
 HV9954  NAD 83(2011) X  -  1,120,601.399 (meters)                     COMP
 HV9954  NAD 83(2011) Y  - -4,846,918.631 (meters)                     COMP
 HV9954  NAD 83(2011) Z  -  3,978,174.572 (meters)                     COMP
 HV9954  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 HV9954
 HV9954  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9954  Standards:
 HV9954         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9954            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9954  -------------------------------------------------------------------
 HV9954  NETWORK    1.11   2.41           0.48   0.42   1.23     -0.14452114
 HV9954  -------------------------------------------------------------------
 HV9954  Click here for local accuracies and other accuracy information.
 HV9954
 HV9954.The horizontal coordinates were established by GPS observations
 HV9954.and adjusted by the National Geodetic Survey in June 2012.
 HV9954
 HV9954.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9954.been affixed to the stable North American tectonic plate. See 
 HV9954.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9954
 HV9954.The horizontal coordinates are valid at the epoch date displayed above
 HV9954.which is a decimal equivalence of Year/Month/Day.
 HV9954
 HV9954.The orthometric height was determined by GPS observations and a
 HV9954.high-resolution geoid model.
 HV9954
 HV9954.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9954.GEOID18 height accuracy estimate available here.
 HV9954
 HV9954.Click photographs - Photos may exist for this station.
 HV9954
 HV9954.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9954
 HV9954.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9954
 HV9954.The ellipsoidal height was determined by GPS observations
 HV9954.and is referenced to NAD 83.
 HV9954
 HV9954. The following values were computed from the NAD 83(2011) position.
 HV9954
 HV9954;                    North         East     Units Scale Factor Converg.
 HV9954;SPC MD       -   129,813.479   401,560.918   MT  0.99995009   +0 00 40.6
 HV9954;SPC MD       -   425,896.39  1,317,454.45   sFT  0.99995009   +0 00 40.6
 HV9954;SPC VA N     - 2,130,897.719 3,631,787.973   MT  0.99995564   +0 56 50.6
 HV9954;SPC VA N     - 6,991,120.27 11,915,291.04   sFT  0.99995564   +0 56 50.6
 HV9954;UTM  18      - 4,300,456.405   327,970.655   MT  0.99996443   -1 14 35.6
 HV9954
 HV9954!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9954!SPC MD       -   0.99999671  x   0.99995009  =   0.99994680
 HV9954!SPC VA N     -   0.99999671  x   0.99995564  =   0.99995235
 HV9954!UTM  18      -   0.99999671  x   0.99996443  =   0.99996114
 HV9954
 HV9954_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2797000456(NAD 83)
 HV9954
 HV9954                          SUPERSEDED SURVEY CONTROL
 HV9954
 HV9954  NAD 83(2007)-  38 50 10.00593(N)    076 58 55.27821(W) AD(2002.00) 0
 HV9954  ELLIP H (02/10/07)   20.943  (m)                       GP(2002.00)    
 HV9954  ELLIP H (08/30/02)   20.947  (m)                       GP(       ) 4 2
 HV9954  ELLIP H (09/09/94)   20.928  (m)                       GP(       ) 4 1
 HV9954  NAD 83(1991)-  38 50 10.00603(N)    076 58 55.27903(W) AD(       ) 1
 HV9954
 HV9954.Superseded values are not recommended for survey control.
 HV9954
 HV9954.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9954.See file dsdata.pdf to determine how the superseded data were derived.
 HV9954
 HV9954_MARKER: DD = SURVEY DISK
 HV9954_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9954_STAMPING: T.S. 20452 PG
 HV9954_MARK LOGO: WSSC
 HV9954_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9954_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9954+STABILITY: SURFACE MOTION
 HV9954_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9954+SATELLITE: SATELLITE OBSERVATIONS - January 08, 2013
 HV9954
 HV9954  HISTORY     - Date     Condition        Report By
 HV9954  HISTORY     - 1993     MONUMENTED       MSI
 HV9954  HISTORY     - 20030429 GOOD             DMW
 HV9954  HISTORY     - 20090825 GOOD             JMTMD
 HV9954  HISTORY     - 20130108 GOOD             GPSSS
 HV9954
 HV9954                          STATION DESCRIPTION
 HV9954
 HV9954'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9954'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9954'APPROXIMATELY 2.0 MI (3.2 KM) NORTHEAST OF THE TOWN OF FOREST
 HV9954'HEIGHTS. TO REACH THE STATION FROM THE INTERSECTION OF ST. BARNABAS
 HV9954'ROAD (S.R. 414) AND WHEELER ROAD, PROCEED NORTHWEST ALONG WHEELER
 HV9954'ROAD FOR 1.8 MI (2.9 KM) TO THE INTERSECTION WITH SOUTHERN AVENUE.
 HV9954'TURN RIGHT AND TRAVEL NORTHEAST ALONG SOUTHERN AVENUE FOR 0.4 MI
 HV9954'(0.6 KM) TO THE STATION ON THE RIGHT.
 HV9954'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9954'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9954'T.S. 20452 PG.  THE DISK IS LOCATED 31.5 FT (9.6 M) SOUTH-SOUTHWEST
 HV9954'OF POWER POLE NUMBER 805365-05, 14.9 FT (4.5 M) SOUTHEAST OF THE EDGE
 HV9954'OF CURB, AND 61.8 FT (18.8 M) SOUTHWEST OF THE ENTRANCE TO 1501
 HV9954'SOUTHERN AVENUE.
 HV9954
 HV9954                          STATION RECOVERY (2003)
 HV9954
 HV9954'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (DMM)
 HV9954'RECOVERED IN GOOD CONDITION.
 HV9954
 HV9954                          STATION RECOVERY (2009)
 HV9954
 HV9954'RECOVERY NOTE BY JMT ENGINEERING 2009 (GPS)
 HV9954'FD DID NOT USE (NOT SO GOOD FOR GPS)
 HV9954
 HV9954                          STATION RECOVERY (2013)
 HV9954
 HV9954'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (FP)
 HV9954'RECOVERED BY FARON PYLES, PLS OF NORTHERN BAY LAND PLANNING,
 HV9954'ENGINEERING AND SURVEYING CORP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9955 ***********************************************************************
 HV9955  DESIGNATION -  20453
 HV9955  PID         -  HV9955
 HV9955  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9955  COUNTRY     -  US
 HV9955  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9955
 HV9955                         *CURRENT SURVEY CONTROL
 HV9955  ______________________________________________________________________
 HV9955* NAD 83(2011) POSITION- 38 58 14.87366(N) 076 54 17.89413(W)   ADJUSTED
 HV9955* NAD 83(2011) ELLIP HT-     6.057 (meters)        (06/27/12)   ADJUSTED
 HV9955* NAD 83(2011) EPOCH   -  2010.00
 HV9955* NAVD 88 ORTHO HEIGHT -    38.3   (meters)      126.    (feet) GPS OBS
 HV9955  ______________________________________________________________________
 HV9955  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9955  GEOID HEIGHT    -        -32.600 (meters)                     GEOID93
 HV9955  GEOID HEIGHT    -        -32.228 (meters)                     GEOID18
 HV9955  NAD 83(2011) X  -  1,124,988.400 (meters)                     COMP
 HV9955  NAD 83(2011) Y  - -4,836,250.184 (meters)                     COMP
 HV9955  NAD 83(2011) Z  -  3,989,800.930 (meters)                     COMP
 HV9955  LAPLACE CORR    -         -4.96  (seconds)                    DEFLEC18
 HV9955
 HV9955  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9955  Standards:
 HV9955         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9955            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9955  -------------------------------------------------------------------
 HV9955  NETWORK    1.06   2.41           0.45   0.42   1.23     -0.00293298
 HV9955  -------------------------------------------------------------------
 HV9955  Click here for local accuracies and other accuracy information.
 HV9955
 HV9955.The horizontal coordinates were established by GPS observations
 HV9955.and adjusted by the National Geodetic Survey in June 2012.
 HV9955
 HV9955.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9955.been affixed to the stable North American tectonic plate. See 
 HV9955.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9955
 HV9955.The horizontal coordinates are valid at the epoch date displayed above
 HV9955.which is a decimal equivalence of Year/Month/Day.
 HV9955
 HV9955.The orthometric height was determined by GPS observations and a
 HV9955.high-resolution geoid model.
 HV9955
 HV9955.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9955.GEOID18 height accuracy estimate available here.
 HV9955
 HV9955.Click photographs - Photos may exist for this station.
 HV9955
 HV9955.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9955
 HV9955.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9955
 HV9955.The ellipsoidal height was determined by GPS observations
 HV9955.and is referenced to NAD 83.
 HV9955
 HV9955. The following values were computed from the NAD 83(2011) position.
 HV9955
 HV9955;                    North         East     Units Scale Factor Converg.
 HV9955;SPC MD       -   144,768.811   408,235.035   MT  0.99995122   +0 03 34.7
 HV9955;SPC MD       -   474,962.34  1,339,351.11   sFT  0.99995122   +0 03 34.7
 HV9955;UTM  18      - 4,315,261.811   334,971.051   MT  0.99993536   -1 11 54.1
 HV9955
 HV9955!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9955!SPC MD       -   0.99999905  x   0.99995122  =   0.99995027
 HV9955!UTM  18      -   0.99999905  x   0.99993536  =   0.99993441
 HV9955
 HV9955_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3497115261(NAD 83)
 HV9955
 HV9955                          SUPERSEDED SURVEY CONTROL
 HV9955
 HV9955  NAD 83(2007)-  38 58 14.87400(N)    076 54 17.89494(W) AD(2002.00) 0
 HV9955  ELLIP H (02/10/07)    6.082  (m)                       GP(2002.00)    
 HV9955  ELLIP H (08/30/02)    6.087  (m)                       GP(       ) 4 2
 HV9955  ELLIP H (09/09/94)    6.024  (m)                       GP(       ) 4 1
 HV9955  NAD 83(1991)-  38 58 14.87405(N)    076 54 17.89520(W) AD(       ) 1
 HV9955
 HV9955.Superseded values are not recommended for survey control.
 HV9955
 HV9955.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9955.See file dsdata.pdf to determine how the superseded data were derived.
 HV9955
 HV9955_MARKER: DD = SURVEY DISK
 HV9955_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9955_STAMPING: T.S. 20453 PG
 HV9955_MARK LOGO: WSSC
 HV9955_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9955_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9955+STABILITY: SURFACE MOTION
 HV9955_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9955+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9955
 HV9955  HISTORY     - Date     Condition        Report By
 HV9955  HISTORY     - 1993     MONUMENTED       MSI
 HV9955  HISTORY     - 20050115 GOOD             GEOCAC
 HV9955
 HV9955                          STATION DESCRIPTION
 HV9955
 HV9955'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9955'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9955'APPROXIMATELY 1.6 MI (2.6 KM) WEST OF THE TOWN OF NEW CARROLLTON.  TO
 HV9955'REACH THE STATION FROM THE INTERSECTION OF EAST WEST HIGHWAY (S.R.
 HV9955'410) AND KENILWORTH AVENUE (S.R. 201), PROCEED NORTH ALONG KENILWORTH
 HV9955'AVENUE FOR 0.9 MI (1.4 KM) TO THE INTERSECTION WITH GOOD LUCK ROAD.
 HV9955'TURN RIGHT AND TRAVEL EAST ALONG GOOD LUCK ROAD FOR 0.6 MI (1.0 KM)
 HV9955'TO THE FIRST ENTRANCE TO PARKDALE HIGH SCHOOL.  TURN RIGHT AND TRAVEL
 HV9955'SOUTH ALONG ENTRANCE ROAD FOR 0.2 MI (0.3 KM) TO THE STATION IN A
 HV9955'GRASS MEDIAN.
 HV9955'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9955'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9955'T.S. 20453 PG.  THE DISK IS LOCATED 57.8 FT (17.6 M)
 HV9955'NORTH-NORTHEAST OF A MANHOLE, 68.2 FT (20.8 M) EAST-NORTHEAST OF A
 HV9955'MANHOLE, 117.0 FT (35.7 M) SOUTH-SOUTHWEST OF A FIRE HYDRANT.
 HV9955
 HV9955                          STATION RECOVERY (2005)
 HV9955
 HV9955'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV9955'FOUND AS DESCRIBED IN A SMALL PLANTED AREA AT THE END OF THE SCHOOL
 HV9955'PARKING LOT THAT IS CLOSEST TO THE BUILDING ENTRANCE AND CLOSEST TO
 HV9955'THE DRIVEWAY LEADING FROM GOOD LUCK ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9956 ***********************************************************************
 HV9956  DESIGNATION -  20454
 HV9956  PID         -  HV9956
 HV9956  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9956  COUNTRY     -  US
 HV9956  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9956
 HV9956                         *CURRENT SURVEY CONTROL
 HV9956  ______________________________________________________________________
 HV9956* NAD 83(2011) POSITION- 38 57 41.44654(N) 076 55 44.80188(W)   ADJUSTED
 HV9956* NAD 83(2011) ELLIP HT-   -22.102 (meters)        (06/27/12)   ADJUSTED
 HV9956* NAD 83(2011) EPOCH   -  2010.00
 HV9956* NAVD 88 ORTHO HEIGHT -    10.1   (meters)       33.    (feet) GPS OBS
 HV9956  ______________________________________________________________________
 HV9956  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9956  GEOID HEIGHT    -        -32.550 (meters)                     GEOID93
 HV9956  GEOID HEIGHT    -        -32.179 (meters)                     GEOID18
 HV9956  NAD 83(2011) X  -  1,123,092.242 (meters)                     COMP
 HV9956  NAD 83(2011) Y  - -4,837,333.870 (meters)                     COMP
 HV9956  NAD 83(2011) Z  -  3,988,981.752 (meters)                     COMP
 HV9956  LAPLACE CORR    -         -4.97  (seconds)                    DEFLEC18
 HV9956
 HV9956  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9956  Standards:
 HV9956         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9956            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9956  -------------------------------------------------------------------
 HV9956  NETWORK    1.05   2.25           0.45   0.41   1.15      0.00069046
 HV9956  -------------------------------------------------------------------
 HV9956  Click here for local accuracies and other accuracy information.
 HV9956
 HV9956.The horizontal coordinates were established by GPS observations
 HV9956.and adjusted by the National Geodetic Survey in June 2012.
 HV9956
 HV9956.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9956.been affixed to the stable North American tectonic plate. See 
 HV9956.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9956
 HV9956.The horizontal coordinates are valid at the epoch date displayed above
 HV9956.which is a decimal equivalence of Year/Month/Day.
 HV9956
 HV9956.The orthometric height was determined by GPS observations and a
 HV9956.high-resolution geoid model.
 HV9956
 HV9956.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9956.GEOID18 height accuracy estimate available here.
 HV9956
 HV9956.Click photographs - Photos may exist for this station.
 HV9956
 HV9956.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9956
 HV9956.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9956
 HV9956.The ellipsoidal height was determined by GPS observations
 HV9956.and is referenced to NAD 83.
 HV9956
 HV9956. The following values were computed from the NAD 83(2011) position.
 HV9956
 HV9956;                    North         East     Units Scale Factor Converg.
 HV9956;SPC MD       -   143,736.154   406,143.828   MT  0.99995096   +0 02 40.2
 HV9956;SPC MD       -   471,574.37  1,332,490.21   sFT  0.99995096   +0 02 40.2
 HV9956;UTM  18      - 4,314,275.321   332,857.702   MT  0.99994401   -1 12 47.9
 HV9956
 HV9956!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9956!SPC MD       -   1.00000347  x   0.99995096  =   0.99995443
 HV9956!UTM  18      -   1.00000347  x   0.99994401  =   0.99994748
 HV9956
 HV9956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3285714275(NAD 83)
 HV9956
 HV9956                          SUPERSEDED SURVEY CONTROL
 HV9956
 HV9956  NAD 83(2007)-  38 57 41.44689(N)    076 55 44.80270(W) AD(2002.00) 0
 HV9956  ELLIP H (02/10/07)  -22.077  (m)                       GP(2002.00)    
 HV9956  ELLIP H (08/30/02)  -22.073  (m)                       GP(       ) 4 2
 HV9956  ELLIP H (09/09/94)  -22.134  (m)                       GP(       ) 4 1
 HV9956  NAD 83(1991)-  38 57 41.44698(N)    076 55 44.80299(W) AD(       ) 1
 HV9956
 HV9956.Superseded values are not recommended for survey control.
 HV9956
 HV9956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9956.See file dsdata.pdf to determine how the superseded data were derived.
 HV9956
 HV9956_MARKER: DD = SURVEY DISK
 HV9956_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9956_STAMPING: T.S. 20454 PG
 HV9956_MARK LOGO: WSSC
 HV9956_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9956_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9956+STABILITY: SURFACE MOTION
 HV9956_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9956+SATELLITE: SATELLITE OBSERVATIONS - November 11, 2012
 HV9956
 HV9956  HISTORY     - Date     Condition        Report By
 HV9956  HISTORY     - 1993     MONUMENTED       MSI
 HV9956  HISTORY     - 20020925 GOOD             RICE
 HV9956  HISTORY     - 20031113 GOOD             GEOCAC
 HV9956  HISTORY     - 20121111 GOOD             NGS
 HV9956
 HV9956                          STATION DESCRIPTION
 HV9956
 HV9956'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9956'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, IN THE TOWN
 HV9956'OF RIVERDALE.  TO REACH THE STATION FROM THE INTERSECTION OF
 HV9956'BALTIMORE AVENUE (U.S. 1) AND EAST- WEST HIGHWAY (S.R. 410), PROCEED
 HV9956'EAST ALONG EAST-WEST HIGHWAY FOR 0.6 MI (1.0 KM) TO THE INTERSECTION
 HV9956'WITH TAYLOR ROAD. TURN RIGHT AND TRAVEL SOUTH ALONG TAYLOR ROAD FOR
 HV9956'0.1 MI (0.2 KM) TO THE STATION ON THE LEFT IN A GRASS ISLAND IN THE
 HV9956'PARKING LOT OF RIVERDALE ELEMENTARY SCHOOL.
 HV9956'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9956'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9956'T.S. 20454 PG.  THE DISK IS LOCATED 19.0 FT (5.8 M) NORTHEAST OF A
 HV9956'LIGHT POLE, 2.0 FT (0.6 M) NORTHWEST OF THE CURB, AND 16.1 FT
 HV9956'(4.9 M) SOUTH OF THE BULLNOSE OF THE GRASS ISLAND.
 HV9956
 HV9956                          STATION RECOVERY (2002)
 HV9956
 HV9956'RECOVERY NOTE BY RICE ASSOCIATES PC 2002 (DLM)
 HV9956'RECOVERED AS DESCRIBED
 HV9956
 HV9956                          STATION RECOVERY (2003)
 HV9956
 HV9956'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV9956'RECOVERED IN GOOD CONDITION.
 HV9956
 HV9956                          STATION RECOVERY (2012)
 HV9956
 HV9956'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (DRD)
 HV9956'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9957 ***********************************************************************
 HV9957  DESIGNATION -  20455
 HV9957  PID         -  HV9957
 HV9957  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9957  COUNTRY     -  US
 HV9957  USGS QUAD   -  WASHINGTON EAST (2016)
 HV9957
 HV9957                         *CURRENT SURVEY CONTROL
 HV9957  ______________________________________________________________________
 HV9957* NAD 83(2011) POSITION- 38 52 36.79090(N) 076 54 32.84920(W)   ADJUSTED
 HV9957* NAD 83(2011) ELLIP HT-    16.399 (meters)        (06/27/12)   ADJUSTED
 HV9957* NAD 83(2011) EPOCH   -  2010.00
 HV9957* NAVD 88 ORTHO HEIGHT -    48.7   (meters)      160.    (feet) GPS OBS
 HV9957  ______________________________________________________________________
 HV9957  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9957  GEOID HEIGHT    -        -32.720 (meters)                     GEOID93
 HV9957  GEOID HEIGHT    -        -32.351 (meters)                     GEOID18
 HV9957  NAD 83(2011) X  -  1,126,123.175 (meters)                     COMP
 HV9957  NAD 83(2011) Y  - -4,842,719.585 (meters)                     COMP
 HV9957  NAD 83(2011) Z  -  3,981,696.537 (meters)                     COMP
 HV9957  LAPLACE CORR    -         -4.65  (seconds)                    DEFLEC18
 HV9957
 HV9957  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9957  Standards:
 HV9957         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9957            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9957  -------------------------------------------------------------------
 HV9957  NETWORK    0.89   1.82           0.39   0.33   0.93      0.11739468
 HV9957  -------------------------------------------------------------------
 HV9957  Click here for local accuracies and other accuracy information.
 HV9957
 HV9957.The horizontal coordinates were established by GPS observations
 HV9957.and adjusted by the National Geodetic Survey in June 2012.
 HV9957
 HV9957.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9957.been affixed to the stable North American tectonic plate. See 
 HV9957.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9957
 HV9957.The horizontal coordinates are valid at the epoch date displayed above
 HV9957.which is a decimal equivalence of Year/Month/Day.
 HV9957
 HV9957.The orthometric height was determined by GPS observations and a
 HV9957.high-resolution geoid model.
 HV9957
 HV9957.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9957.GEOID18 height accuracy estimate available here.
 HV9957
 HV9957.Click photographs - Photos may exist for this station.
 HV9957
 HV9957.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9957
 HV9957.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9957
 HV9957.The ellipsoidal height was determined by GPS observations
 HV9957.and is referenced to NAD 83.
 HV9957
 HV9957. The following values were computed from the NAD 83(2011) position.
 HV9957
 HV9957;                    North         East     Units Scale Factor Converg.
 HV9957;SPC MD       -   134,343.432   407,885.421   MT  0.99994985   +0 03 25.3
 HV9957;SPC MD       -   440,758.41  1,338,204.09   sFT  0.99994985   +0 03 25.3
 HV9957;UTM  18      - 4,304,846.752   334,392.866   MT  0.99993772   -1 11 54.7
 HV9957
 HV9957!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9957!SPC MD       -   0.99999743  x   0.99994985  =   0.99994728
 HV9957!UTM  18      -   0.99999743  x   0.99993772  =   0.99993515
 HV9957
 HV9957_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3439204846(NAD 83)
 HV9957
 HV9957                          SUPERSEDED SURVEY CONTROL
 HV9957
 HV9957  NAD 83(2007)-  38 52 36.79145(N)    076 54 32.85002(W) AD(2002.00) 0
 HV9957  ELLIP H (02/10/07)   16.412  (m)                       GP(2002.00)    
 HV9957  ELLIP H (08/30/02)   16.410  (m)                       GP(       ) 4 2
 HV9957  NAD 83(1993)-  38 52 36.79165(N)    076 54 32.85022(W) AD(       ) 1
 HV9957  ELLIP H (11/14/94)   16.392  (m)                       GP(       ) 4 2
 HV9957  ELLIP H (09/09/94)   16.375  (m)                       GP(       ) 4 1
 HV9957  NAD 83(1991)-  38 52 36.79175(N)    076 54 32.85066(W) AD(       ) 1
 HV9957
 HV9957.Superseded values are not recommended for survey control.
 HV9957
 HV9957.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9957.See file dsdata.pdf to determine how the superseded data were derived.
 HV9957
 HV9957_MARKER: DD = SURVEY DISK
 HV9957_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9957_STAMPING: T.S. 20455 PG
 HV9957_MARK LOGO: WSSC
 HV9957_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9957_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9957+STABILITY: SURFACE MOTION
 HV9957_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9957+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9957
 HV9957  HISTORY     - Date     Condition        Report By
 HV9957  HISTORY     - 1993     MONUMENTED       MSI
 HV9957
 HV9957                          STATION DESCRIPTION
 HV9957
 HV9957'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9957'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9957'APPROXIMATELY 1.1 MI (1.8 KM) SOUTH OF THE EAST CORNER OF THE
 HV9957'DISTRICT OF COLUMBIA. TO REACH THE STATION FROM THE INTERSECTION OF
 HV9957'MARLBORO PIKE AND SILVER HILL ROAD (S.R. 458), PROCEED NORTH ALONG
 HV9957'SILVER HILL ROAD FOR 0.5 MI (0.8 KM) TO THE INTERSECTION WITH WALKER
 HV9957'MILL ROAD.  TURN LEFT AND TRAVEL WEST ALONG WALKER MILL ROAD FOR 0.5
 HV9957'MI (0.8 KM) TO THE INTERSECTION WITH ROLLINS AVENUE.  TURN RIGHT AND
 HV9957'TRAVEL NORTH ALONG ROLLINS AVENUE FOR 0.2 MI (0.3 KM) TO THE
 HV9957'INTERSECTION WITH BROOK ROAD.  TURN LEFT AND TRAVEL NORTH ALONG BROOK
 HV9957'ROAD FOR 0.8 MI (1.3 KM) TO THE INTERSECTION WITH HIGHVIEW PLACE.
 HV9957'TURN RIGHT AND TRAVEL EAST FOR 0.3 MI (0.5 KM) TO THE 2ND
 HV9957'INTERSECTION WITH ONSLOW WAY, AND THE STATION ON THE RIGHT.
 HV9957'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9957'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9957'T.S. 20455 PG.  THE DISK IS LOCATED 11.0 FT (3.4 M) EAST-NORTHEAST
 HV9957'OF THE STOP SIGN, 20.7 FT (6.3 M) NORTH OF A LIGHT POLE, AND 7.3 FT
 HV9957'(2.2 M) SOUTH OF THE EDGE OF THE CURB ALONG HIGHVIEW PLACE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9958 ***********************************************************************
 HV9958  DESIGNATION -  20456
 HV9958  PID         -  HV9958
 HV9958  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9958  COUNTRY     -  US
 HV9958  USGS QUAD   -  ANACOSTIA (2016)
 HV9958
 HV9958                         *CURRENT SURVEY CONTROL
 HV9958  ______________________________________________________________________
 HV9958* NAD 83(2011) POSITION- 38 51 57.52024(N) 076 55 45.77242(W)   ADJUSTED
 HV9958* NAD 83(2011) ELLIP HT-    31.181 (meters)        (06/27/12)   ADJUSTED
 HV9958* NAD 83(2011) EPOCH   -  2010.00
 HV9958* NAVD 88 ORTHO HEIGHT -    63.489 (meters)      208.30  (feet) ADJUSTED
 HV9958  ______________________________________________________________________
 HV9958  GEOID HEIGHT    -        -32.317 (meters)                     GEOID18
 HV9958  NAD 83(2011) X  -  1,124,585.477 (meters)                     COMP
 HV9958  NAD 83(2011) Y  - -4,843,868.923 (meters)                     COMP
 HV9958  NAD 83(2011) Z  -  3,980,762.989 (meters)                     COMP
 HV9958  LAPLACE CORR    -         -4.44  (seconds)                    DEFLEC18
 HV9958  DYNAMIC HEIGHT  -         63.454 (meters)      208.18  (feet) COMP
 HV9958  MODELED GRAVITY -    980,076.8   (mgal)                       NAVD 88
 HV9958
 HV9958  VERT ORDER      -  FIRST     CLASS II
 HV9958
 HV9958  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9958  Standards:
 HV9958         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9958            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9958  -------------------------------------------------------------------
 HV9958  NETWORK    1.07   2.23           0.46   0.41   1.14      0.03038683
 HV9958  -------------------------------------------------------------------
 HV9958  Click here for local accuracies and other accuracy information.
 HV9958
 HV9958.The horizontal coordinates were established by GPS observations
 HV9958.and adjusted by the National Geodetic Survey in June 2012.
 HV9958
 HV9958.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9958.been affixed to the stable North American tectonic plate. See 
 HV9958.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9958
 HV9958.The horizontal coordinates are valid at the epoch date displayed above
 HV9958.which is a decimal equivalence of Year/Month/Day.
 HV9958
 HV9958.The orthometric height was determined by differential leveling and
 HV9958.adjusted by the NATIONAL GEODETIC SURVEY
 HV9958.in August 2020.
 HV9958
 HV9958.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9958.GEOID18 height accuracy estimate available here.
 HV9958
 HV9958.Click photographs - Photos may exist for this station.
 HV9958
 HV9958.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9958
 HV9958.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9958
 HV9958.The ellipsoidal height was determined by GPS observations
 HV9958.and is referenced to NAD 83.
 HV9958
 HV9958.The dynamic height is computed by dividing the NAVD 88
 HV9958.geopotential number by the normal gravity value computed on the
 HV9958.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9958.degrees latitude (g = 980.6199 gals.).
 HV9958
 HV9958.The modeled gravity was interpolated from observed gravity values.
 HV9958
 HV9958. The following values were computed from the NAD 83(2011) position.
 HV9958
 HV9958;                    North         East     Units Scale Factor Converg.
 HV9958;SPC MD       -   133,130.951   406,128.666   MT  0.99994986   +0 02 39.6
 HV9958;SPC MD       -   436,780.46  1,332,440.47   sFT  0.99994986   +0 02 39.6
 HV9958;UTM  18      - 4,303,673.062   332,609.983   MT  0.99994504   -1 12 39.5
 HV9958
 HV9958!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9958!SPC MD       -   0.99999511  x   0.99994986  =   0.99994497
 HV9958!UTM  18      -   0.99999511  x   0.99994504  =   0.99994015
 HV9958
 HV9958_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3260903673(NAD 83)
 HV9958
 HV9958                          SUPERSEDED SURVEY CONTROL
 HV9958
 HV9958  NAD 83(2007)-  38 51 57.52078(N)    076 55 45.77321(W) AD(2002.00) 0
 HV9958  ELLIP H (02/10/07)   31.192  (m)                       GP(2002.00)    
 HV9958  ELLIP H (08/30/02)   31.190  (m)                       GP(       ) 4 2
 HV9958  NAD 83(1993)-  38 51 57.52107(N)    076 55 45.77349(W) AD(       ) 1
 HV9958  ELLIP H (11/14/94)   31.170  (m)                       GP(       ) 4 2
 HV9958  ELLIP H (09/09/94)   31.147  (m)                       GP(       ) 4 1
 HV9958  NAD 83(1991)-  38 51 57.52117(N)    076 55 45.77387(W) AD(       ) 1
 HV9958  NAVD 88 (01/27/94)   63.5    (m)  GEOID93  model used  GPS OBS        
 HV9958
 HV9958.Superseded values are not recommended for survey control.
 HV9958
 HV9958.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9958.See file dsdata.pdf to determine how the superseded data were derived.
 HV9958
 HV9958_MARKER: DD = SURVEY DISK
 HV9958_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9958_STAMPING: 20456 PG
 HV9958_MARK LOGO: WSSC
 HV9958_PROJECTION: FLUSH
 HV9958_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9958_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9958+STABILITY: SURFACE MOTION
 HV9958_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9958+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 HV9958
 HV9958  HISTORY     - Date     Condition        Report By
 HV9958  HISTORY     - 1993     MONUMENTED       MSI
 HV9958  HISTORY     - 20020517 GOOD             WR
 HV9958  HISTORY     - 20191028 GOOD             MDSHA
 HV9958
 HV9958                          STATION DESCRIPTION
 HV9958
 HV9958'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9958'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9958'APPROXIMATELY 2.3 MI (3.7 KM) WEST OF THE TOWN OF DISTRICT HEIGHTS.
 HV9958'TO REACH THE STATION FROM THE INTERSECTION OF SILVER HILL ROAD (S.R.
 HV9958'458)AND PENNSYLVANIA AVENUE (S.R. 4), PROCEED WEST ALONG PENNSYLVANIA
 HV9958'AVENUE FOR 1.4 MI (2.3 KM) TO THE STATION IN THE MEDIAN.
 HV9958'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9958'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9958'T.S. 20456 PG.  THE DISK IS LOCATED 36.0 FT (11.0 M) NORTH OF THE
 HV9958'EDGE OF PAVEMENT (EAST BOUND), 16.5 FT (5.0 M) SOUTH OF THE EDGE OF
 HV9958'PAVEMENT (WEST BOUND), 66.5 FT (20.3 M) EAST OF THE CENTERLINE (AS
 HV9958'EXTRAPOLATED) OF LAKEWOOD STREET AND 1.1 FT (0.3 M) EAST OF A WITNESS
 HV9958'POST.
 HV9958
 HV9958                          STATION RECOVERY (2002)
 HV9958
 HV9958'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (FL)
 HV9958'RECOVERED IN GOOD CONDITION.
 HV9958
 HV9958                          STATION RECOVERY (2019)
 HV9958
 HV9958'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 HV9958'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9959 ***********************************************************************
 HV9959  DESIGNATION -  20457
 HV9959  PID         -  HV9959
 HV9959  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9959  COUNTRY     -  US
 HV9959  USGS QUAD   -  BRANDYWINE (2016)
 HV9959
 HV9959                         *CURRENT SURVEY CONTROL
 HV9959  ______________________________________________________________________
 HV9959* NAD 83(2011) POSITION- 38 44 51.64857(N) 076 48 02.60715(W)   ADJUSTED
 HV9959* NAD 83(2011) ELLIP HT-    37.801 (meters)        (06/27/12)   ADJUSTED
 HV9959* NAD 83(2011) EPOCH   -  2010.00
 HV9959* NAVD 88 ORTHO HEIGHT -    70.6   (meters)      232.    (feet) GPS OBS
 HV9959  ______________________________________________________________________
 HV9959  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9959  GEOID HEIGHT    -        -33.270 (meters)                     GEOID93
 HV9959  GEOID HEIGHT    -        -32.915 (meters)                     GEOID18
 HV9959  NAD 83(2011) X  -  1,137,339.912 (meters)                     COMP
 HV9959  NAD 83(2011) Y  - -4,849,349.166 (meters)                     COMP
 HV9959  NAD 83(2011) Z  -  3,970,533.457 (meters)                     COMP
 HV9959  LAPLACE CORR    -         -6.20  (seconds)                    DEFLEC18
 HV9959
 HV9959  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9959  Standards:
 HV9959         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9959            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9959  -------------------------------------------------------------------
 HV9959  NETWORK    1.13   2.49           0.45   0.47   1.27     -0.13725035
 HV9959  -------------------------------------------------------------------
 HV9959  Click here for local accuracies and other accuracy information.
 HV9959
 HV9959.The horizontal coordinates were established by GPS observations
 HV9959.and adjusted by the National Geodetic Survey in June 2012.
 HV9959
 HV9959.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9959.been affixed to the stable North American tectonic plate. See 
 HV9959.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9959
 HV9959.The horizontal coordinates are valid at the epoch date displayed above
 HV9959.which is a decimal equivalence of Year/Month/Day.
 HV9959
 HV9959.The orthometric height was determined by GPS observations and a
 HV9959.high-resolution geoid model.
 HV9959
 HV9959.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9959.GEOID18 height accuracy estimate available here.
 HV9959
 HV9959.Click photographs - Photos may exist for this station.
 HV9959
 HV9959.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9959
 HV9959.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9959
 HV9959.The ellipsoidal height was determined by GPS observations
 HV9959.and is referenced to NAD 83.
 HV9959
 HV9959. The following values were computed from the NAD 83(2011) position.
 HV9959
 HV9959;                    North         East     Units Scale Factor Converg.
 HV9959;SPC MD       -   120,015.696   417,322.849   MT  0.99995234   +0 07 30.3
 HV9959;SPC MD       -   393,751.50  1,369,166.71   sFT  0.99995234   +0 07 30.3
 HV9959;UTM  18      - 4,290,316.376   343,514.208   MT  0.99990155   -1 07 38.2
 HV9959
 HV9959!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9959!SPC MD       -   0.99999407  x   0.99995234  =   0.99994641
 HV9959!UTM  18      -   0.99999407  x   0.99990155  =   0.99989562
 HV9959
 HV9959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4351490316(NAD 83)
 HV9959
 HV9959                          SUPERSEDED SURVEY CONTROL
 HV9959
 HV9959  NAD 83(2007)-  38 44 51.64857(N)    076 48 02.60857(W) AD(2002.00) 0
 HV9959  ELLIP H (02/10/07)   37.741  (m)                       GP(2002.00)    
 HV9959  ELLIP H (08/30/02)   37.738  (m)                       GP(       ) 4 2
 HV9959  NAD 83(1993)-  38 44 51.64851(N)    076 48 02.60877(W) AD(       ) 1
 HV9959  ELLIP H (11/14/94)   37.772  (m)                       GP(       ) 4 2
 HV9959  ELLIP H (09/09/94)   37.747  (m)                       GP(       ) 4 1
 HV9959  NAD 83(1991)-  38 44 51.64829(N)    076 48 02.60920(W) AD(       ) 1
 HV9959
 HV9959.Superseded values are not recommended for survey control.
 HV9959
 HV9959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9959.See file dsdata.pdf to determine how the superseded data were derived.
 HV9959
 HV9959_MARKER: DD = SURVEY DISK
 HV9959_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9959_STAMPING: T.S. 20457 PG
 HV9959_MARK LOGO: WSSC
 HV9959_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9959_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9959+STABILITY: SURFACE MOTION
 HV9959_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9959+SATELLITE: SATELLITE OBSERVATIONS - 1993
 HV9959
 HV9959  HISTORY     - Date     Condition        Report By
 HV9959  HISTORY     - 1993     MONUMENTED       MSI
 HV9959
 HV9959                          STATION DESCRIPTION
 HV9959
 HV9959'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV9959'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 HV9959'APPROXIMATELY 1.9 MI (3.1 KM) SOUTHWEST OF THE TOWN OF MARLTON.  TO
 HV9959'REACH THE STATION FROM THE INTERSECTION OF CRAIN HIGHWAY (U.S. 301),
 HV9959'ROSARYVILLE ROAD, AND OLD INDIAN HEAD ROAD, PROCEED SOUTH ALONG OLD
 HV9959'INDIAN HEAD ROAD FOR 0.3 MI (0.5 KM) TO INTERSECTION WITH DULEY
 HV9959'STATION ROAD.  TURN LEFT AND TRAVEL SOUTH ALONG DULEY STATION ROAD
 HV9959'FOR 0.5 MI (0.8 KM) TO THE INTERSECTION WITH CHELTENHAM ROAD.
 HV9959'CONTINUE ALONG DULEY STATION ROAD FOR 0.1 MI (0.2 KM) TO THE SERVICE
 HV9959'ROAD ON THE RIGHT AT THE OVERHEAD POWER LINES. TURN RIGHT AND TRAVEL
 HV9959'SOUTH ALONG THE SERVICE ROAD FOR 0.1 MI (0.2 KM) TO THE STATION ON
 HV9959'THE RIGHT.
 HV9959'THE STATION IS A WSSC SURVEY DISK SET IN THE TOP OF A CONCRETE
 HV9959'MONUMENT, APPROXIMATELY FLUSH WITH THE GROUND SURFACE, AND STAMPED
 HV9959'T.S. 20457 PG.  THE DISK IS LOCATED 75.5 FT (23.0 M) NORTH OF THE
 HV9959'NORTH RAILROAD TRACK, 19.5 WEST OF THE SERVICE ROAD, AND 239.4 FT
 HV9959'(73.0 M) SOUTH OF THE SOUTHEAST LEG OF THE WESTERN TOWER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2668 ***********************************************************************
 JV2668  DESIGNATION -  2049 WSSC
 JV2668  PID         -  JV2668
 JV2668  STATE/COUNTY-  MD/MONTGOMERY
 JV2668  COUNTRY     -  US
 JV2668  USGS QUAD   -  SANDY SPRING (2016)
 JV2668
 JV2668                         *CURRENT SURVEY CONTROL
 JV2668  ______________________________________________________________________
 JV2668* NAD 83(1986) POSITION- 39 08 40.     (N) 077 02 35.     (W)   SCALED
 JV2668* NAVD 88 ORTHO HEIGHT -   153.74  (+/-2cm)      504.4   (feet) VERTCON3
 JV2668  ______________________________________________________________________
 JV2668  GEOID HEIGHT    -        -31.863 (meters)                     GEOID18
 JV2668  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2668
 JV2668.The horizontal coordinates were scaled from a map and have
 JV2668.an estimated accuracy of +/- 6 seconds.
 JV2668
 JV2668.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2668.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2668
 JV2668.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2668.GEOID18 height accuracy estimate available here.
 JV2668
 JV2668.The vertical order pertains to the NGVD 29 superseded value.
 JV2668
 JV2668.Click photographs - Photos may exist for this station.
 JV2668
 JV2668;                    North         East    Units  Estimated Accuracy
 JV2668;SPC MD       -   164,040.      396,280.      MT  (+/- 180 meters Scaled)
 JV2668
 JV2668_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ234347(NAD 83)
 JV2668
 JV2668                          SUPERSEDED SURVEY CONTROL
 JV2668
 JV2668  NGVD 29 (11/26/84)  153.946  (m)          505.07   (f) ADJUSTED    2 0
 JV2668
 JV2668.Superseded values are not recommended for survey control.
 JV2668
 JV2668.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2668.See file dsdata.pdf to determine how the superseded data were derived.
 JV2668
 JV2668_MARKER: DD = SURVEY DISK
 JV2668_SETTING: 0 = UNSPECIFIED SETTING
 JV2668_SP_SET: IRON PIPE
 JV2668_STAMPING: 2049
 JV2668_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2668
 JV2668  HISTORY     - Date     Condition        Report By
 JV2668  HISTORY     - UNK      MONUMENTED       WSSC
 JV2668  HISTORY     - 1944     GOOD             WSSC
 JV2668  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2668
 JV2668                          STATION DESCRIPTION
 JV2668
 JV2668'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2668'0.8 MI W FROM SANDY SPRING.
 JV2668'ON STATE HIGHWAY 108, 29.5 FEET NORTH OF THE CENTERLINE OF THE
 JV2668'HIGHWAY, ON THE WELLS PROPERTY, AND 2.5 FEET EAST OF A FENCE
 JV2668'ALONG THE WEST LINE OF THE LAWN.
 JV2668
 JV2668                          STATION RECOVERY (1995)
 JV2668
 JV2668'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2668'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR4185 ***********************************************************************
 DR4185  DESIGNATION -  20509
 DR4185  PID         -  DR4185
 DR4185  STATE/COUNTY-  MD/PRINCE GEORGES
 DR4185  COUNTRY     -  US
 DR4185  USGS QUAD   -  ANACOSTIA (2016)
 DR4185
 DR4185                         *CURRENT SURVEY CONTROL
 DR4185  ______________________________________________________________________
 DR4185* NAD 83(1986) POSITION- 38 51 46.59   (N) 076 56 43.33   (W)   HD_HELD1
 DR4185* NAVD 88 ORTHO HEIGHT -    60.428 (meters)      198.25  (feet) ADJUSTED
 DR4185  ______________________________________________________________________
 DR4185  GEOID HEIGHT    -        -32.286 (meters)                     GEOID18
 DR4185  DYNAMIC HEIGHT  -         60.395 (meters)      198.15  (feet) COMP
 DR4185  MODELED GRAVITY -    980,080.7   (mgal)                       NAVD 88
 DR4185
 DR4185  VERT ORDER      -  FIRST     CLASS II
 DR4185
 DR4185.The horizontal coordinates were determined by differentially corrected
 DR4185.hand held GPS observations or other comparable positioning techniques
 DR4185.and have an estimated accuracy of +/- 3 meters.
 DR4185
 DR4185.The orthometric height was determined by differential leveling and
 DR4185.adjusted by the NATIONAL GEODETIC SURVEY
 DR4185.in August 2020.
 DR4185
 DR4185.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR4185.GEOID18 height accuracy estimate available here.
 DR4185
 DR4185.Click photographs - Photos may exist for this station.
 DR4185
 DR4185.The dynamic height is computed by dividing the NAVD 88
 DR4185.geopotential number by the normal gravity value computed on the
 DR4185.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR4185.degrees latitude (g = 980.6199 gals.).
 DR4185
 DR4185.The modeled gravity was interpolated from observed gravity values.
 DR4185
 DR4185;                    North         East    Units  Estimated Accuracy
 DR4185;SPC MD       -   132,793.0     404,741.3     MT  (+/- 3 meters HH1 GPS) 
 DR4185
 DR4185_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3121503365(NAD 83)
 DR4185
 DR4185                          SUPERSEDED SURVEY CONTROL
 DR4185
 DR4185.No superseded survey control is available for this station.
 DR4185
 DR4185_MARKER: DD = SURVEY DISK
 DR4185_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR4185_STAMPING: 5274 20509
 DR4185_MARK LOGO: WSSC
 DR4185_PROJECTION: RECESSED 10 CENTIMETERS
 DR4185_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR4185+STABILITY: SURFACE MOTION
 DR4185_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DR4185+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 DR4185
 DR4185  HISTORY     - Date     Condition        Report By
 DR4185  HISTORY     - UNK      MONUMENTED       WSSC
 DR4185  HISTORY     - 20191028 GOOD             MDSHA
 DR4185
 DR4185                          STATION DESCRIPTION
 DR4185
 DR4185'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 DR4185'THE STATION IS LOCATED ABOUT 11.3 MI (18.2 KM) NORTH OF PISCATAWAY,
 DR4185'11.0 MI (17.8 KM) WEST-NORTHWEST OF UPPER MARLBORO AND 8.5 MI (13.6
 DR4185'KM) SOUTH-SOUTHWEST OF LANHAM.
 DR4185'
 DR4185'TO REACH FROM I-495 AND MD ROUTE 4, GO NORTHWEST ON MD ROUTE 4 FOR 4.8
 DR4185'MI (7.7 KM) TO A FUNERAL HOME AND THE MARK ON THE LEFT.
 DR4185'
 DR4185'IT IS 91.7 FT (28.0 M) NORTH OF THE NORTH CORNER OF THE FUNERAL HOME,
 DR4185'72.5 FT (22.1 M) SOUTHWEST OF THE CENTERLINE OF THE SOUTHBOUND ROADWAY
 DR4185'OF MD ROUTE 4, 23.5 FT (7.2 M) NORTH OF THE NORTH FACE OF A POWER
 DR4185'TRANSFORMER, 17.0 FT (5.2 M) NORTH OF THE EAST END OF A STONE WALL,
 DR4185'7.7 FT (2.3 M) EAST OF POWER POLE NUMBER 815374-4590 AND SET IN THE
 DR4185'TOP OF A 10-IN (25 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR4184 ***********************************************************************
 DR4184  DESIGNATION -  20510
 DR4184  PID         -  DR4184
 DR4184  STATE/COUNTY-  MD/PRINCE GEORGES
 DR4184  COUNTRY     -  US
 DR4184  USGS QUAD   -  ANACOSTIA (2016)
 DR4184
 DR4184                         *CURRENT SURVEY CONTROL
 DR4184  ______________________________________________________________________
 DR4184* NAD 83(1986) POSITION- 38 51 46.45   (N) 076 56 28.77   (W)   HD_HELD1
 DR4184* NAVD 88 ORTHO HEIGHT -    56.983 (meters)      186.95  (feet) ADJUSTED
 DR4184  ______________________________________________________________________
 DR4184  GEOID HEIGHT    -        -32.295 (meters)                     GEOID18
 DR4184  DYNAMIC HEIGHT  -         56.951 (meters)      186.85  (feet) COMP
 DR4184  MODELED GRAVITY -    980,079.3   (mgal)                       NAVD 88
 DR4184
 DR4184  VERT ORDER      -  FIRST     CLASS II
 DR4184
 DR4184.The horizontal coordinates were determined by differentially corrected
 DR4184.hand held GPS observations or other comparable positioning techniques
 DR4184.and have an estimated accuracy of +/- 3 meters.
 DR4184
 DR4184.The orthometric height was determined by differential leveling and
 DR4184.adjusted by the NATIONAL GEODETIC SURVEY
 DR4184.in August 2020.
 DR4184
 DR4184.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR4184.GEOID18 height accuracy estimate available here.
 DR4184
 DR4184.Click photographs - Photos may exist for this station.
 DR4184
 DR4184.The dynamic height is computed by dividing the NAVD 88
 DR4184.geopotential number by the normal gravity value computed on the
 DR4184.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR4184.degrees latitude (g = 980.6199 gals.).
 DR4184
 DR4184.The modeled gravity was interpolated from observed gravity values.
 DR4184
 DR4184;                    North         East    Units  Estimated Accuracy
 DR4184;SPC MD       -   132,788.9     405,092.3     MT  (+/- 3 meters HH1 GPS) 
 DR4184
 DR4184_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3156603353(NAD 83)
 DR4184
 DR4184                          SUPERSEDED SURVEY CONTROL
 DR4184
 DR4184.No superseded survey control is available for this station.
 DR4184
 DR4184_MARKER: DD = SURVEY DISK
 DR4184_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR4184_STAMPING: 20510
 DR4184_MARK LOGO: WSSC
 DR4184_PROJECTION: RECESSED 15 CENTIMETERS
 DR4184_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR4184+STABILITY: SURFACE MOTION
 DR4184_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR4184+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 DR4184
 DR4184  HISTORY     - Date     Condition        Report By
 DR4184  HISTORY     - UNK      MONUMENTED       WSSC
 DR4184  HISTORY     - 20191028 GOOD             MDSHA
 DR4184
 DR4184                          STATION DESCRIPTION
 DR4184
 DR4184'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 DR4184'THE STATION IS LOCATED ABOUT 11.3 MI (18.2 KM) NORTH OF PISCATAWAY,
 DR4184'10.8 MI (17.4 KM) WEST-NORTHWEST OF UPPER MARLBORO AND 8.3 MI (13.4
 DR4184'KM) SOUTH-SOUTHWEST OF LANHAM.
 DR4184'
 DR4184'TO REACH FROM I-495 AND MD ROUTE 4, GO NORTHWEST ON MD ROUTE 4 FOR 4.6
 DR4184'MI (7.4 KM) TO THE MARK ON THE LEFT, IN THE MEDIAN OF MD ROUTE 4.
 DR4184'
 DR4184'IT IS 124.7 FT (38.0 M) WEST OF A DRAINAGE INLET, 44.6 FT (13.6 M)
 DR4184'SOUTH OF THE CENTERLINE OF MD ROUTE 4 NORTHBOUND LANE, 29.8 FT (9.1 M)
 DR4184'NORTH OF THE CENTERLINE OF MD ROUTE 4 SOUTHBOUND LANE AND SET IN THE
 DR4184'TOP OF A 10-IN (25 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR4183 ***********************************************************************
 DR4183  DESIGNATION -  20511
 DR4183  PID         -  DR4183
 DR4183  STATE/COUNTY-  MD/PRINCE GEORGES
 DR4183  COUNTRY     -  US
 DR4183  USGS QUAD   -  ANACOSTIA (2016)
 DR4183
 DR4183                         *CURRENT SURVEY CONTROL
 DR4183  ______________________________________________________________________
 DR4183* NAD 83(1986) POSITION- 38 51 49.25   (N) 076 56 15.99   (W)   HD_HELD1
 DR4183* NAVD 88 ORTHO HEIGHT -    60.163 (meters)      197.38  (feet) ADJUSTED
 DR4183  ______________________________________________________________________
 DR4183  GEOID HEIGHT    -        -32.301 (meters)                     GEOID18
 DR4183  DYNAMIC HEIGHT  -         60.130 (meters)      197.28  (feet) COMP
 DR4183  MODELED GRAVITY -    980,078.5   (mgal)                       NAVD 88
 DR4183
 DR4183  VERT ORDER      -  FIRST     CLASS II
 DR4183
 DR4183.The horizontal coordinates were determined by differentially corrected
 DR4183.hand held GPS observations or other comparable positioning techniques
 DR4183.and have an estimated accuracy of +/- 3 meters.
 DR4183
 DR4183.The orthometric height was determined by differential leveling and
 DR4183.adjusted by the NATIONAL GEODETIC SURVEY
 DR4183.in August 2020.
 DR4183
 DR4183.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR4183.GEOID18 height accuracy estimate available here.
 DR4183
 DR4183.Click photographs - Photos may exist for this station.
 DR4183
 DR4183.The dynamic height is computed by dividing the NAVD 88
 DR4183.geopotential number by the normal gravity value computed on the
 DR4183.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR4183.degrees latitude (g = 980.6199 gals.).
 DR4183
 DR4183.The modeled gravity was interpolated from observed gravity values.
 DR4183
 DR4183;                    North         East    Units  Estimated Accuracy
 DR4183;SPC MD       -   132,875.4     405,400.4     MT  (+/- 3 meters HH1 GPS) 
 DR4183
 DR4183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3187603433(NAD 83)
 DR4183
 DR4183                          SUPERSEDED SURVEY CONTROL
 DR4183
 DR4183.No superseded survey control is available for this station.
 DR4183
 DR4183_MARKER: DD = SURVEY DISK
 DR4183_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR4183_STAMPING: 20511
 DR4183_MARK LOGO: WSSC
 DR4183_PROJECTION: RECESSED 15 CENTIMETERS
 DR4183_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR4183+STABILITY: SURFACE MOTION
 DR4183_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR4183+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 DR4183
 DR4183  HISTORY     - Date     Condition        Report By
 DR4183  HISTORY     - UNK      MONUMENTED       WSSC
 DR4183  HISTORY     - 20191028 GOOD             MDSHA
 DR4183
 DR4183                          STATION DESCRIPTION
 DR4183
 DR4183'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 DR4183'THE MARK IS LOCATED ABOUT 8.2 MI (13.2 KM) SOUTH-SOUTHWEST OF LANHAM,
 DR4183'2.6 MI (4.2 KM) WEST OF DISTRICT HEIGHTS AND 1.0 MI (1.6 KM)
 DR4183'WEST-SOUTHWEST OF CORAL HILLS.
 DR4183'
 DR4183'TO REACH FROM I-495 AND MD ROUTE 4, GO NORTHWEST ON MD ROUTE 4 FOR 4.4
 DR4183'MI (7.1 KM) TO THE MARK ON THE LEFT IN THE MEDIAN.
 DR4183'
 DR4183'IT IS 87.4 FT (26.6 M) SOUTHWEST OF A DRAINAGE INLET, 77.1 FT (23.5 M)
 DR4183'SOUTHEAST OF THE NORTHEAST END OF A LARGE RETAINING WALL ALONG THE
 DR4183'NORTHBOUND ROADWAY, 52.6 FT (16.0 M) SOUTHEAST OF THE CENTERLINE OF
 DR4183'THE NORTHBOUND ROADWAY, 25.7 FT (7.8 M) NORTHWEST OF THE CENTERLINE OF
 DR4183'THE SOUTHBOUND ROADWAY AND SET IN THE TOP OF A 10-IN (25 CM) ROUND
 DR4183'CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5751 ***********************************************************************
 AA5751  DESIGNATION -  20529
 AA5751  PID         -  AA5751
 AA5751  STATE/COUNTY-  MD/MONTGOMERY
 AA5751  COUNTRY     -  US
 AA5751  USGS QUAD   -  SANDY SPRING (2016)
 AA5751
 AA5751                         *CURRENT SURVEY CONTROL
 AA5751  ______________________________________________________________________
 AA5751* NAD 83(2011) POSITION- 39 11 24.32589(N) 077 03 55.76444(W)   ADJUSTED
 AA5751* NAD 83(2011) ELLIP HT-   111.758 (meters)        (06/27/12)   ADJUSTED
 AA5751* NAD 83(2011) EPOCH   -  2010.00
 AA5751* NAVD 88 ORTHO HEIGHT -   143.6   (meters)      471.    (feet) GPS OBS
 AA5751  ______________________________________________________________________
 AA5751  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5751  GEOID HEIGHT    -         -32.17 (meters)                     GEOID93
 AA5751  GEOID HEIGHT    -        -31.823 (meters)                     GEOID18
 AA5751  NAD 83(2011) X  -  1,108,017.795 (meters)                     COMP
 AA5751  NAD 83(2011) Y  - -4,824,504.755 (meters)                     COMP
 AA5751  NAD 83(2011) Z  -  4,008,765.953 (meters)                     COMP
 AA5751  LAPLACE CORR    -         -2.83  (seconds)                    DEFLEC18
 AA5751
 AA5751  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5751  Standards:
 AA5751         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5751            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5751  -------------------------------------------------------------------
 AA5751  NETWORK    3.33   4.68           1.47   1.23   2.39     -0.00301505
 AA5751  -------------------------------------------------------------------
 AA5751  Click here for local accuracies and other accuracy information.
 AA5751
 AA5751.The horizontal coordinates were established by GPS observations
 AA5751.and adjusted by the National Geodetic Survey in June 2012.
 AA5751
 AA5751.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5751.been affixed to the stable North American tectonic plate. See 
 AA5751.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5751
 AA5751.The horizontal coordinates are valid at the epoch date displayed above
 AA5751.which is a decimal equivalence of Year/Month/Day.
 AA5751
 AA5751.The orthometric height was determined by GPS observations and a
 AA5751.high-resolution geoid model.
 AA5751
 AA5751.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5751.GEOID18 height accuracy estimate available here.
 AA5751
 AA5751.Click photographs - Photos may exist for this station.
 AA5751
 AA5751.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5751
 AA5751.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5751
 AA5751.The ellipsoidal height was determined by GPS observations
 AA5751.and is referenced to NAD 83.
 AA5751
 AA5751. The following values were computed from the NAD 83(2011) position.
 AA5751
 AA5751;                    North         East     Units Scale Factor Converg.
 AA5751;SPC MD       -   169,110.679   394,342.237   MT  0.99996485   -0 02 28.0
 AA5751;SPC MD       -   554,823.95  1,293,771.16   sFT  0.99996485   -0 02 28.0
 AA5751;UTM  18      - 4,339,903.707   321,617.273   MT  0.99999181   -1 18 19.9
 AA5751
 AA5751!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5751!SPC MD       -   0.99998247  x   0.99996485  =   0.99994732
 AA5751!UTM  18      -   0.99998247  x   0.99999181  =   0.99997428
 AA5751
 AA5751_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2161739903(NAD 83)
 AA5751
 AA5751                          SUPERSEDED SURVEY CONTROL
 AA5751
 AA5751  NAD 83(2007)-  39 11 24.32594(N)    077 03 55.76591(W) AD(2002.00) 0
 AA5751  ELLIP H (02/10/07)  111.800  (m)                       GP(2002.00)    
 AA5751  ELLIP H (08/30/02)  111.803  (m)                       GP(       ) 4 2
 AA5751  NAD 83(1991)-  39 11 24.32615(N)    077 03 55.76571(W) AD(       ) 1
 AA5751  ELLIP H (06/13/95)  111.737  (m)                       GP(       ) 4 2
 AA5751
 AA5751.Superseded values are not recommended for survey control.
 AA5751
 AA5751.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5751.See file dsdata.pdf to determine how the superseded data were derived.
 AA5751
 AA5751_MARKER: DD = SURVEY DISK
 AA5751_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5751_STAMPING: T.S. 20529
 AA5751_MARK LOGO: WSSC
 AA5751_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AA5751_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5751+STABILITY: SURFACE MOTION
 AA5751_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5751+SATELLITE: SATELLITE OBSERVATIONS - April 07, 2005
 AA5751
 AA5751  HISTORY     - Date     Condition        Report By
 AA5751  HISTORY     - 1994     MONUMENTED       WSSC
 AA5751  HISTORY     - 20030821 GOOD             GEOCAC
 AA5751  HISTORY     - 20050407 GOOD             USPSQD
 AA5751  HISTORY     - 20090512 MARK NOT FOUND   JMTMD
 AA5751
 AA5751                          STATION DESCRIPTION
 AA5751
 AA5751'DESCRIBED BY WASH SUBURB SAN COMM 1994
 AA5751'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5751'0.5 MI (0.8 KM) NORTH OF THE VILLAGE OF BROOKEVILLE.
 AA5751'
 AA5751'TO REACH THE STATION FROM THE INTERSECTION OF GEORGIA AVENUE (S.R. 97)
 AA5751'AND OLNEY SANDY SPRING ROAD (S.R. 108), GO NORTH 2.0 MI (3.2 KM) ALONG
 AA5751'GEORGIA AVENUE (S.R. 97) TO A SHARP LEFT BEND AND THE JUNCTION WITH
 AA5751'MARKET STREET WITHIN THE VILLAGE OF BROOKEVILLE.  BEAR LEFT AND GO
 AA5751'EAST THEN NORTH 0.8 MI (1.3 KM) ALONG GEORGIA AVENUE TO THE STATION ON
 AA5751'THE RIGHT, NEAR THE ENTRANCE TO THE MEADOWS FARMS NURSERIES.
 AA5751'
 AA5751'THE STATION IS A WSSC DISK SET IN TOP OF A CONCRETE MONUMENT WHICH IS
 AA5751'FLUSH WITH GROUND LEVEL, AND STAMPED "T.S. 20529".  THE DISK IS
 AA5751'LOCATED 4.1 M (13.5 FT) WEST-SOUTHWEST OF THE FENCELINE, 15.8 M (51.8
 AA5751'FT) NORTHEAST OF POWER-POLE NO. 18, 7.8 M (25.6 FT) EAST-NORTHEAST OF
 AA5751'THE CENTERLINE OF THE ROAD, AND 8.2 M (26.9 FT) NORTHWEST OF POWER
 AA5751'POLE NO. 15.
 AA5751
 AA5751                          STATION RECOVERY (2003)
 AA5751
 AA5751'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 AA5751'RECOVERED IN GOOD CONDITION.
 AA5751
 AA5751                          STATION RECOVERY (2005)
 AA5751
 AA5751'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 AA5751'RECOVERED IN GOOD CONDITION.
 AA5751
 AA5751                          STATION RECOVERY (2009)
 AA5751
 AA5751'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 AA5751'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1423 ***********************************************************************
 JV1423  DESIGNATION -  2053 WSSC
 JV1423  PID         -  JV1423
 JV1423  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1423  COUNTRY     -  US
 JV1423  USGS QUAD   -  BELTSVILLE (2016)
 JV1423
 JV1423                         *CURRENT SURVEY CONTROL
 JV1423  ______________________________________________________________________
 JV1423* NAD 83(1986) POSITION- 39 00 13.     (N) 076 58 51.     (W)   SCALED
 JV1423* NAVD 88 ORTHO HEIGHT -    62.093 (meters)      203.72  (feet) ADJUSTED
 JV1423  ______________________________________________________________________
 JV1423  GEOID HEIGHT    -        -32.039 (meters)                     GEOID18
 JV1423  DYNAMIC HEIGHT  -         62.060 (meters)      203.61  (feet) COMP
 JV1423  MODELED GRAVITY -    980,097.8   (mgal)                       NAVD 88
 JV1423
 JV1423  VERT ORDER      -  SECOND    CLASS 0
 JV1423
 JV1423.The horizontal coordinates were scaled from a map and have
 JV1423.an estimated accuracy of +/- 6 seconds.
 JV1423
 JV1423.The orthometric height was determined by differential leveling and
 JV1423.adjusted by the NATIONAL GEODETIC SURVEY
 JV1423.in June 1991.
 JV1423
 JV1423.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1423.GEOID18 height accuracy estimate available here.
 JV1423
 JV1423.Click photographs - Photos may exist for this station.
 JV1423
 JV1423.The dynamic height is computed by dividing the NAVD 88
 JV1423.geopotential number by the normal gravity value computed on the
 JV1423.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1423.degrees latitude (g = 980.6199 gals.).
 JV1423
 JV1423.The modeled gravity was interpolated from observed gravity values.
 JV1423
 JV1423;                    North         East    Units  Estimated Accuracy
 JV1423;SPC MD       -   148,410.      401,660.      MT  (+/- 180 meters Scaled)
 JV1423
 JV1423_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ284190(NAD 83)
 JV1423
 JV1423                          SUPERSEDED SURVEY CONTROL
 JV1423
 JV1423  NGVD 29 (11/26/84)   62.314  (m)          204.44   (f) ADJUSTED    2 0
 JV1423
 JV1423.Superseded values are not recommended for survey control.
 JV1423
 JV1423.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1423.See file dsdata.pdf to determine how the superseded data were derived.
 JV1423
 JV1423_MARKER: DD = SURVEY DISK
 JV1423_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1423_STAMPING: 2053
 JV1423_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1423
 JV1423  HISTORY     - Date     Condition        Report By
 JV1423  HISTORY     - UNK      MONUMENTED       WSSC
 JV1423  HISTORY     - 1951     GOOD             CGS
 JV1423
 JV1423                          STATION DESCRIPTION
 JV1423
 JV1423'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1423'AT NORTHWEST PARK.
 JV1423'AT NORTHWEST PARK, PRINCE GEORGES COUNTY, 43 FEET EAST OF
 JV1423'NEW HAMPSHIRE AVENUE (STATE HIGHWAY 320), WEST OF A PRIVATE
 JV1423'ROAD LEADING TO HOLY TRINITY MISSIONARY CENACLE, AND 26-1/2
 JV1423'FEET SOUTH OF THE CENTER LINE OF METZROTT ROAD.  A WASHINGTON
 JV1423'SUBURBAN SANITARY DISTRICT BRONZE DISK, STAMPED 2053 AND SET IN
 JV1423'THE TOP OF A 2-INCH IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1372 ***********************************************************************
 HV1372  DESIGNATION -  2054 WSSC
 HV1372  PID         -  HV1372
 HV1372  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1372  COUNTRY     -  US
 HV1372  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1372
 HV1372                         *CURRENT SURVEY CONTROL
 HV1372  ______________________________________________________________________
 HV1372* NAD 83(1986) POSITION- 38 57 37.     (N) 076 59 26.     (W)   SCALED
 HV1372* NAVD 88 ORTHO HEIGHT -    37.73  (+/-2cm)      123.8   (feet) VERTCON3
 HV1372  ______________________________________________________________________
 HV1372  GEOID HEIGHT    -        -32.048 (meters)                     GEOID18
 HV1372  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1372
 HV1372.The horizontal coordinates were scaled from a map and have
 HV1372.an estimated accuracy of +/- 6 seconds.
 HV1372
 HV1372.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1372.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1372
 HV1372.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1372.GEOID18 height accuracy estimate available here.
 HV1372
 HV1372.The vertical order pertains to the NGVD 29 superseded value.
 HV1372
 HV1372.Click photographs - Photos may exist for this station.
 HV1372
 HV1372;                    North         East    Units  Estimated Accuracy
 HV1372;SPC MD       -   143,600.      400,820.      MT  (+/- 180 meters Scaled)
 HV1372
 HV1372_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ275142(NAD 83)
 HV1372
 HV1372                          SUPERSEDED SURVEY CONTROL
 HV1372
 HV1372  NGVD 29 (11/26/84)   37.950  (m)          124.51   (f) ADJUSTED    2 0
 HV1372
 HV1372.Superseded values are not recommended for survey control.
 HV1372
 HV1372.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1372.See file dsdata.pdf to determine how the superseded data were derived.
 HV1372
 HV1372_MARKER: DD = SURVEY DISK
 HV1372_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1372_STAMPING: 2054
 HV1372_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1372
 HV1372  HISTORY     - Date     Condition        Report By
 HV1372  HISTORY     - UNK      MONUMENTED       WSSC
 HV1372  HISTORY     - 1944     GOOD             WSSC
 HV1372
 HV1372                          STATION DESCRIPTION
 HV1372
 HV1372'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1372'AT CHILLUM.
 HV1372'ON CHILLUM ROAD, 0.25 MILE WEST OF SARGENT ROAD, 0.25 MILE EAST
 HV1372'OF RIGGS ROAD, AND ON THE NORTHEAST SIDE OF CHILLUM ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1373 ***********************************************************************
 HV1373  DESIGNATION -  2055 WSSC
 HV1373  PID         -  HV1373
 HV1373  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1373  COUNTRY     -  US
 HV1373  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1373
 HV1373                         *CURRENT SURVEY CONTROL
 HV1373  ______________________________________________________________________
 HV1373* NAD 83(1986) POSITION- 38 57 43.     (N) 076 59 37.     (W)   SCALED
 HV1373* NAVD 88 ORTHO HEIGHT -    48.93  (+/-2cm)      160.5   (feet) VERTCON3
 HV1373  ______________________________________________________________________
 HV1373  GEOID HEIGHT    -        -32.041 (meters)                     GEOID18
 HV1373  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1373
 HV1373.The horizontal coordinates were scaled from a map and have
 HV1373.an estimated accuracy of +/- 6 seconds.
 HV1373
 HV1373.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1373.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1373
 HV1373.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1373.GEOID18 height accuracy estimate available here.
 HV1373
 HV1373.The vertical order pertains to the NGVD 29 superseded value.
 HV1373
 HV1373.Click photographs - Photos may exist for this station.
 HV1373
 HV1373;                    North         East    Units  Estimated Accuracy
 HV1373;SPC MD       -   143,780.      400,550.      MT  (+/- 180 meters Scaled)
 HV1373
 HV1373_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ272144(NAD 83)
 HV1373
 HV1373                          SUPERSEDED SURVEY CONTROL
 HV1373
 HV1373  NGVD 29 (11/26/84)   49.151  (m)          161.26   (f) ADJUSTED    2 0
 HV1373
 HV1373.Superseded values are not recommended for survey control.
 HV1373
 HV1373.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1373.See file dsdata.pdf to determine how the superseded data were derived.
 HV1373
 HV1373_MARKER: DD = SURVEY DISK
 HV1373_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1373_STAMPING: 2055
 HV1373_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1373
 HV1373  HISTORY     - Date     Condition        Report By
 HV1373  HISTORY     - UNK      MONUMENTED       WSSC
 HV1373  HISTORY     - 1944     GOOD             WSSC
 HV1373
 HV1373                          STATION DESCRIPTION
 HV1373
 HV1373'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1373'AT CHILLUM.
 HV1373'AT THE INTERSECTION OF RIGGS ROAD AND CHILLUM ROAD, ON THE
 HV1373'NORTHEAST SIDE OF CHILLUM ROAD, SOUTH OF THE INTERSECTION,
 HV1373'ON THE PROPERTY OF J.A. MILLER, AND SOUTH OF A SERVICE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1371 ***********************************************************************
 HV1371  DESIGNATION -  2056 WSSC
 HV1371  PID         -  HV1371
 HV1371  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1371  COUNTRY     -  US
 HV1371  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1371
 HV1371                         *CURRENT SURVEY CONTROL
 HV1371  ______________________________________________________________________
 HV1371* NAD 83(1986) POSITION- 38 57 31.8    (N) 076 59 12.6    (W)   HD_HELD2
 HV1371* NAVD 88 ORTHO HEIGHT -    38.11  (+/-2cm)      125.0   (feet) VERTCON3
 HV1371  ______________________________________________________________________
 HV1371  GEOID HEIGHT    -        -32.055 (meters)                     GEOID18
 HV1371  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1371
 HV1371.The horizontal coordinates were established by autonomous hand held GPS
 HV1371.observations and have an estimated accuracy of +/- 10 meters.
 HV1371
 HV1371.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1371.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1371
 HV1371.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1371.GEOID18 height accuracy estimate available here.
 HV1371
 HV1371.The vertical order pertains to the NGVD 29 superseded value.
 HV1371
 HV1371.Click photographs - Photos may exist for this station.
 HV1371
 HV1371;                    North         East    Units  Estimated Accuracy
 HV1371;SPC MD       -   143,436.      401,141.      MT  (+/- 10 meters HH2 GPS)
 HV1371
 HV1371_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2784914085(NAD 83)
 HV1371
 HV1371                          SUPERSEDED SURVEY CONTROL
 HV1371
 HV1371  NGVD 29 (11/26/84)   38.332  (m)          125.76   (f) ADJUSTED    2 0
 HV1371
 HV1371.Superseded values are not recommended for survey control.
 HV1371
 HV1371.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1371.See file dsdata.pdf to determine how the superseded data were derived.
 HV1371
 HV1371_MARKER: DD = SURVEY DISK
 HV1371_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1371_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1371
 HV1371  HISTORY     - Date     Condition        Report By
 HV1371  HISTORY     - UNK      MONUMENTED       WSSC
 HV1371  HISTORY     - 1944     GOOD             WSSC
 HV1371  HISTORY     - 20040318 GOOD             GEOCAC
 HV1371
 HV1371                          STATION DESCRIPTION
 HV1371
 HV1371'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1371'AT CHILLUM HEIGHTS.
 HV1371'ON SARGENT ROAD, ABOUT 200 FEET NORTH OF CHILLUM ROAD, ON THE
 HV1371'WEST SIDE OF SARGENT ROAD, AND ON THE PROPERTY LINE BETWEEN THE
 HV1371'FIRST AND SECOND HOUSE ON SARGENT ROAD.
 HV1371
 HV1371                          STATION RECOVERY (2004)
 HV1371
 HV1371'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV1371'STATION DISK IS LOCATED APPROXIMATELY ON THE PRORPERTY LINE BETWEEN
 HV1371'5602 AND 5604 SARGENT ROAD, AND ABOUT 5.5 FEET SOUTHWEST OF PEPCO POLE
 HV1371'803409-6489. DISK IS LOCATED HORIZONTALLY ON SLOPING GROUND AND IS
 HV1371'ABOUT LEVEL WITH THE GROUND ON ITS NORTH SIDE AND ABOUT TWO INCHES
 HV1371'ABOVE GROUND LEVEL ON ITS SOUTH SIDE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5752 ***********************************************************************
 AA5752  DESIGNATION -  20575
 AA5752  PID         -  AA5752
 AA5752  STATE/COUNTY-  MD/MONTGOMERY
 AA5752  COUNTRY     -  US
 AA5752  USGS QUAD   -  SENECA (2016)
 AA5752
 AA5752                         *CURRENT SURVEY CONTROL
 AA5752  ______________________________________________________________________
 AA5752* NAD 83(2011) POSITION- 39 06 26.15687(N) 077 21 09.07988(W)   ADJUSTED
 AA5752* NAD 83(2011) ELLIP HT-    70.867 (meters)        (06/27/12)   ADJUSTED
 AA5752* NAD 83(2011) EPOCH   -  2010.00
 AA5752* NAVD 88 ORTHO HEIGHT -   102.8   (meters)      337.    (feet) GPS OBS
 AA5752  ______________________________________________________________________
 AA5752  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5752  GEOID HEIGHT    -         -32.30 (meters)                     GEOID93
 AA5752  GEOID HEIGHT    -        -31.926 (meters)                     GEOID18
 AA5752  NAD 83(2011) X  -  1,085,099.016 (meters)                     COMP
 AA5752  NAD 83(2011) Y  - -4,835,628.423 (meters)                     COMP
 AA5752  NAD 83(2011) Z  -  4,001,609.170 (meters)                     COMP
 AA5752  LAPLACE CORR    -          4.16  (seconds)                    DEFLEC18
 AA5752
 AA5752  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5752  Standards:
 AA5752         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5752            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5752  -------------------------------------------------------------------
 AA5752  NETWORK    2.33   3.39           1.02   0.88   1.73     -0.05791804
 AA5752  -------------------------------------------------------------------
 AA5752  Click here for local accuracies and other accuracy information.
 AA5752
 AA5752.The horizontal coordinates were established by GPS observations
 AA5752.and adjusted by the National Geodetic Survey in June 2012.
 AA5752
 AA5752.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5752.been affixed to the stable North American tectonic plate. See 
 AA5752.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5752
 AA5752.The horizontal coordinates are valid at the epoch date displayed above
 AA5752.which is a decimal equivalence of Year/Month/Day.
 AA5752
 AA5752.The orthometric height was determined by GPS observations and a
 AA5752.high-resolution geoid model.
 AA5752
 AA5752.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5752.GEOID18 height accuracy estimate available here.
 AA5752
 AA5752.Click photographs - Photos may exist for this station.
 AA5752
 AA5752.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5752
 AA5752.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5752
 AA5752.The ellipsoidal height was determined by GPS observations
 AA5752.and is referenced to NAD 83.
 AA5752
 AA5752. The following values were computed from the NAD 83(2011) position.
 AA5752
 AA5752;                    North         East     Units Scale Factor Converg.
 AA5752;SPC MD       -   159,972.815   369,509.790   MT  0.99995798   -0 13 16.5
 AA5752;SPC MD       -   524,844.14  1,212,300.04   sFT  0.99995798   -0 13 16.5
 AA5752;UTM  18      - 4,331,315.024   296,587.113   MT  1.00010951   -1 29 03.9
 AA5752
 AA5752!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5752!SPC MD       -   0.99998888  x   0.99995798  =   0.99994686
 AA5752!UTM  18      -   0.99998888  x   1.00010951  =   1.00009839
 AA5752
 AA5752_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9658731315(NAD 83)
 AA5752
 AA5752                          SUPERSEDED SURVEY CONTROL
 AA5752
 AA5752  NAD 83(2007)-  39 06 26.15690(N)    077 21 09.08015(W) AD(2002.00) 0
 AA5752  ELLIP H (02/10/07)   70.895  (m)                       GP(2002.00)    
 AA5752  ELLIP H (08/30/02)   70.898  (m)                       GP(       ) 4 2
 AA5752  NAD 83(1991)-  39 06 26.15705(N)    077 21 09.08014(W) AD(       ) 1
 AA5752  ELLIP H (06/13/95)   70.816  (m)                       GP(       ) 4 2
 AA5752
 AA5752.Superseded values are not recommended for survey control.
 AA5752
 AA5752.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5752.See file dsdata.pdf to determine how the superseded data were derived.
 AA5752
 AA5752_MARKER: DD = SURVEY DISK
 AA5752_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5752_STAMPING: T.S. 20575 MC
 AA5752_MARK LOGO: WSSC
 AA5752_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5752_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5752+STABILITY: SURFACE MOTION
 AA5752_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5752+SATELLITE: SATELLITE OBSERVATIONS - November 18, 2012
 AA5752
 AA5752  HISTORY     - Date     Condition        Report By
 AA5752  HISTORY     - 1994     MONUMENTED       MSI
 AA5752  HISTORY     - 20121118 GOOD             NGS
 AA5752
 AA5752                          STATION DESCRIPTION
 AA5752
 AA5752'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5752'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5752'4.0 MI (6.4 KM) SOUTHEAST OF THE TOWN OF POOLESVILLE.  TO REACH THE
 AA5752'STATION FROM THE JUNCTION OF WHITES FERRY ROAD (S.R. 107) AND
 AA5752'PARTNERSHIP ROAD, GO SOUTH 2.0 MI (3.2 KM) ALONG PARTNERSHIP ROAD TO
 AA5752'THE INTERSECTION WITH SUGARLAND ROAD.  TURN LEFT AND GO EAST 1.2 MI
 AA5752'(1.9 KM) ALONG SUGARLAND ROAD TO THE INTERSECTION WITH MONTEVIDEO ROAD
 AA5752'ON THE RIGHT AND THE STATION ON THE RIGHT.
 AA5752'
 AA5752'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5752'IS 1 INCH BELOW GROUND LEVEL, AND STAMPED "T.S. 20575 MC".  THE DISK
 AA5752'IS LOCATED 6.35 M (20.83 FT) NORTH-NORTHEAST OF A FENCELINE, 8.60 M
 AA5752'(28.22 FT) NORTHEAST OF A FIBER OPTIC WARNING POST, 26.7 M (87.6 FT)
 AA5752'EAST-SOUTHEAST OF THE CENTERLINE OF SUGARLAND ROAD, AND 2.6 M (8.5 FT)
 AA5752'SOUTH-SOUTHWEST OF THE EDGE OF PAVEMENT.
 AA5752
 AA5752                          STATION RECOVERY (2012)
 AA5752
 AA5752'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (DRD)
 AA5752'MARK IS 8.43 M (27.7 FT) E OF C AND P POLE 332 AND 11.7 M (38.5 FT) NW
 AA5752'FROM THE CENTER OF THE SUPPORTS FOR A RESTRICTED BRIDGE ROAD SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5753 ***********************************************************************
 AA5753  DESIGNATION -  20576
 AA5753  PID         -  AA5753
 AA5753  STATE/COUNTY-  MD/MONTGOMERY
 AA5753  COUNTRY     -  US
 AA5753  USGS QUAD   -  SENECA (2016)
 AA5753
 AA5753                         *CURRENT SURVEY CONTROL
 AA5753  ______________________________________________________________________
 AA5753* NAD 83(2011) POSITION- 39 04 55.86582(N) 077 22 17.37857(W)   ADJUSTED
 AA5753* NAD 83(2011) ELLIP HT-    62.405 (meters)        (06/27/12)   ADJUSTED
 AA5753* NAD 83(2011) EPOCH   -  2010.00
 AA5753* NAVD 88 ORTHO HEIGHT -    94.4   (meters)      310.    (feet) GPS OBS
 AA5753  ______________________________________________________________________
 AA5753  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5753  GEOID HEIGHT    -         -32.31 (meters)                     GEOID93
 AA5753  GEOID HEIGHT    -        -31.937 (meters)                     GEOID18
 AA5753  NAD 83(2011) X  -  1,083,880.227 (meters)                     COMP
 AA5753  NAD 83(2011) Y  - -4,837,694.449 (meters)                     COMP
 AA5753  NAD 83(2011) Z  -  3,999,442.820 (meters)                     COMP
 AA5753  LAPLACE CORR    -          4.46  (seconds)                    DEFLEC18
 AA5753
 AA5753  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5753  Standards:
 AA5753         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5753            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5753  -------------------------------------------------------------------
 AA5753  NETWORK    3.64   4.23           1.54   1.39   2.16     -0.30905876
 AA5753  -------------------------------------------------------------------
 AA5753  Click here for local accuracies and other accuracy information.
 AA5753
 AA5753.The horizontal coordinates were established by GPS observations
 AA5753.and adjusted by the National Geodetic Survey in June 2012.
 AA5753
 AA5753.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5753.been affixed to the stable North American tectonic plate. See 
 AA5753.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5753
 AA5753.The horizontal coordinates are valid at the epoch date displayed above
 AA5753.which is a decimal equivalence of Year/Month/Day.
 AA5753
 AA5753.The orthometric height was determined by GPS observations and a
 AA5753.high-resolution geoid model.
 AA5753
 AA5753.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5753.GEOID18 height accuracy estimate available here.
 AA5753
 AA5753.Click photographs - Photos may exist for this station.
 AA5753
 AA5753.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5753
 AA5753.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5753
 AA5753.The ellipsoidal height was determined by GPS observations
 AA5753.and is referenced to NAD 83.
 AA5753
 AA5753. The following values were computed from the NAD 83(2011) position.
 AA5753
 AA5753;                    North         East     Units Scale Factor Converg.
 AA5753;SPC MD       -   157,195.056   367,857.561   MT  0.99995632   -0 13 59.4
 AA5753;SPC MD       -   515,730.78  1,206,879.35   sFT  0.99995632   -0 13 59.4
 AA5753;UTM  18      - 4,328,573.923   294,873.801   MT  1.00011813   -1 29 44.1
 AA5753
 AA5753!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5753!SPC MD       -   0.99999021  x   0.99995632  =   0.99994653
 AA5753!UTM  18      -   0.99999021  x   1.00011813  =   1.00010834
 AA5753
 AA5753_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9487328573(NAD 83)
 AA5753
 AA5753                          SUPERSEDED SURVEY CONTROL
 AA5753
 AA5753  NAD 83(2007)-  39 04 55.86582(N)    077 22 17.37890(W) AD(2002.00) 0
 AA5753  ELLIP H (02/10/07)   62.443  (m)                       GP(2002.00)    
 AA5753  ELLIP H (08/30/02)   62.472  (m)                       GP(       ) 4 2
 AA5753  NAD 83(1991)-  39 04 55.86555(N)    077 22 17.37894(W) AD(       ) 1
 AA5753  ELLIP H (06/13/95)   62.413  (m)                       GP(       ) 4 2
 AA5753
 AA5753.Superseded values are not recommended for survey control.
 AA5753
 AA5753.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5753.See file dsdata.pdf to determine how the superseded data were derived.
 AA5753
 AA5753_MARKER: DD = SURVEY DISK
 AA5753_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5753_STAMPING: T.S. 20576 MC
 AA5753_MARK LOGO: WSSC
 AA5753_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5753_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5753+STABILITY: SURFACE MOTION
 AA5753_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5753+SATELLITE: SATELLITE OBSERVATIONS - March 19, 2013
 AA5753
 AA5753  HISTORY     - Date     Condition        Report By
 AA5753  HISTORY     - 1994     MONUMENTED       MSI
 AA5753  HISTORY     - 20130319 GOOD             BASE9
 AA5753
 AA5753                          STATION DESCRIPTION
 AA5753
 AA5753'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5753'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5753'5.0 MI (8.0 KM) SOUTH OF THE TOWN OF POOLESVILLE.  TO REACH THE
 AA5753'STATION FROM THE JUNCTION OF PARTNERSHIP ROAD AND RIVER ROAD (S.R.
 AA5753'190), GO WEST 1.0 MI (1.6 KM) ALONG RIVER ROAD TO THE STATION ON THE
 AA5753'LEFT JUST BEFORE THE PARKING FOR THE WILDLIFE AREA.
 AA5753'
 AA5753'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT,
 AA5753'WHICH IS FLUSH WITH THE GROUND LEVEL, AND STAMPED "T.S. 20576 MC". THE
 AA5753'DISK IS LOCATED 6.35 M (20.83 FT) SOUTH-SOUTHEAST OF THE CENTERLINE OF
 AA5753'ROAD, 20.25 M (66.44 FT) WEST OF POWER POLE NO. 694455-5201, 44.3 M
 AA5753'(145.3 FT) EAST-NORTHEAST OF POWER POLE NO. 694454-3390, AND 9.6 M
 AA5753'(31.5 FT) NORTH-NORTHWEST OF A FENCELINE.
 AA5753
 AA5753                          STATION RECOVERY (2013)
 AA5753
 AA5753'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 AA5753'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5756 ***********************************************************************
 AA5756  DESIGNATION -  20579
 AA5756  PID         -  AA5756
 AA5756  STATE/COUNTY-  MD/MONTGOMERY
 AA5756  COUNTRY     -  US
 AA5756  USGS QUAD   -  POOLESVILLE (2016)
 AA5756
 AA5756                         *CURRENT SURVEY CONTROL
 AA5756  ______________________________________________________________________
 AA5756* NAD 83(2011) POSITION- 39 08 05.46646(N) 077 26 12.98217(W)   ADJUSTED
 AA5756* NAD 83(2011) ELLIP HT-    89.255 (meters)        (06/27/12)   ADJUSTED
 AA5756* NAD 83(2011) EPOCH   -  2010.00
 AA5756* NAVD 88 ORTHO HEIGHT -   121.4   (meters)      398.    (feet) GPS OBS
 AA5756  ______________________________________________________________________
 AA5756  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5756  GEOID HEIGHT    -         -32.52 (meters)                     GEOID93
 AA5756  GEOID HEIGHT    -        -32.163 (meters)                     GEOID18
 AA5756  NAD 83(2011) X  -  1,077,556.007 (meters)                     COMP
 AA5756  NAD 83(2011) Y  - -4,835,349.741 (meters)                     COMP
 AA5756  NAD 83(2011) Z  -  4,003,996.763 (meters)                     COMP
 AA5756  LAPLACE CORR    -          5.64  (seconds)                    DEFLEC18
 AA5756
 AA5756  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5756  Standards:
 AA5756         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5756            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5756  -------------------------------------------------------------------
 AA5756  NETWORK    2.95   3.88           1.27   1.13   1.98     -0.14626451
 AA5756  -------------------------------------------------------------------
 AA5756  Click here for local accuracies and other accuracy information.
 AA5756
 AA5756.The horizontal coordinates were established by GPS observations
 AA5756.and adjusted by the National Geodetic Survey in June 2012.
 AA5756
 AA5756.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5756.been affixed to the stable North American tectonic plate. See 
 AA5756.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5756
 AA5756.The horizontal coordinates are valid at the epoch date displayed above
 AA5756.which is a decimal equivalence of Year/Month/Day.
 AA5756
 AA5756.The orthometric height was determined by GPS observations and a
 AA5756.high-resolution geoid model.
 AA5756
 AA5756.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5756.GEOID18 height accuracy estimate available here.
 AA5756
 AA5756.Click photographs - Photos may exist for this station.
 AA5756
 AA5756.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5756
 AA5756.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5756
 AA5756.The ellipsoidal height was determined by GPS observations
 AA5756.and is referenced to NAD 83.
 AA5756
 AA5756. The following values were computed from the NAD 83(2011) position.
 AA5756
 AA5756;                    North         East     Units Scale Factor Converg.
 AA5756;SPC MD       -   163,066.762   362,223.109   MT  0.99996004   -0 16 27.3
 AA5756;SPC MD       -   534,994.87  1,188,393.65   sFT  0.99996004   -0 16 27.3
 AA5756;UTM  18      - 4,334,569.477   289,369.225   MT  1.00014631   -1 32 19.1
 AA5756
 AA5756!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5756!SPC MD       -   0.99998600  x   0.99996004  =   0.99994604
 AA5756!UTM  18      -   0.99998600  x   1.00014631  =   1.00013230
 AA5756
 AA5756_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8936934569(NAD 83)
 AA5756
 AA5756                          SUPERSEDED SURVEY CONTROL
 AA5756
 AA5756  NAD 83(2007)-  39 08 05.46662(N)    077 26 12.98256(W) AD(2002.00) 0
 AA5756  ELLIP H (02/10/07)   89.291  (m)                       GP(2002.00)    
 AA5756  ELLIP H (08/30/02)   89.299  (m)                       GP(       ) 4 2
 AA5756  NAD 83(1991)-  39 08 05.46651(N)    077 26 12.98257(W) AD(       ) 1
 AA5756  ELLIP H (06/13/95)   89.260  (m)                       GP(       ) 4 2
 AA5756
 AA5756.Superseded values are not recommended for survey control.
 AA5756
 AA5756.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5756.See file dsdata.pdf to determine how the superseded data were derived.
 AA5756
 AA5756_MARKER: DD = SURVEY DISK
 AA5756_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5756_STAMPING: T.S. 20579 MC
 AA5756_MARK LOGO: WSSC
 AA5756_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5756_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5756+STABILITY: SURFACE MOTION
 AA5756_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5756+SATELLITE: SATELLITE OBSERVATIONS - November 18, 2012
 AA5756
 AA5756  HISTORY     - Date     Condition        Report By
 AA5756  HISTORY     - 1994     MONUMENTED       MSI
 AA5756  HISTORY     - 20121118 GOOD             NGS
 AA5756
 AA5756                          STATION DESCRIPTION
 AA5756
 AA5756'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5756'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5756'1.3 MI (2.1 KM) SOUTHWEST OF THE TOWN OF POOLESVILLE.  TO REACH THE
 AA5756'STATION FROM THE INTERSECTION OF FISHER AVENUE AND WEST WILLARD ROAD
 AA5756'IN THE TOWN OF POOLESVILLE, GO SOUTH 0.6 MI (1.0 KM) ALONG WILLARD
 AA5756'ROAD TO THE INTERSECTION WITH WESTERLY ROAD.  TURN RIGHT AND GO WEST
 AA5756'0.8 MI (1.3 KM) ALONG WESTERLY ROAD TO THE STATION ON THE LEFT JUST
 AA5756'BEYOND THE ENTRANCE TO HOUSE NO. 20900.
 AA5756'
 AA5756'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT,
 AA5756'WHICH IS FLUSH WITH GROUND LEVEL, AND STAMPED "T.S. 20579 MC".  THE
 AA5756'DISK IS LOCATED 4.7 M (15.4 FT) SOUTH OF THE CENTERLINE OF WESTERLY
 AA5756'ROAD, 2.0 M (6.6 FT) EAST-NORTHEAST OF POWER POLE NO. 19, 20.8 M (68.2
 AA5756'FT) EAST-SOUTHEAST OF A POWERPOLE, AND 81.6 M (267.7 FT) WEST OF THE
 AA5756'CENTERLINE OF DRIVEWAY TO HOUSE NO. 20900.
 AA5756
 AA5756                          STATION RECOVERY (2012)
 AA5756
 AA5756'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (DRD)
 AA5756'GPS OBSERVATIONS MAY BE OBSTRUCTED DUE TO POWER POLE TO THE WSW
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5758 ***********************************************************************
 AA5758  DESIGNATION -  20581
 AA5758  PID         -  AA5758
 AA5758  STATE/COUNTY-  MD/MONTGOMERY
 AA5758  COUNTRY     -  US
 AA5758  USGS QUAD   -  DAMASCUS (2016)
 AA5758
 AA5758                         *CURRENT SURVEY CONTROL
 AA5758  ______________________________________________________________________
 AA5758* NAD 83(2011) POSITION- 39 16 40.51107(N) 077 08 31.79742(W)   ADJUSTED
 AA5758* NAD 83(2011) ELLIP HT-   145.312 (meters)        (06/27/12)   ADJUSTED
 AA5758* NAD 83(2011) EPOCH   -  2010.00
 AA5758* NAVD 88 ORTHO HEIGHT -   177.2   (meters)      581.    (feet) GPS OBS
 AA5758  ______________________________________________________________________
 AA5758  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5758  GEOID HEIGHT    -         -32.16 (meters)                     GEOID93
 AA5758  GEOID HEIGHT    -        -31.813 (meters)                     GEOID18
 AA5758  NAD 83(2011) X  -  1,100,193.769 (meters)                     COMP
 AA5758  NAD 83(2011) Y  - -4,819,995.823 (meters)                     COMP
 AA5758  NAD 83(2011) Z  -  4,016,339.994 (meters)                     COMP
 AA5758  LAPLACE CORR    -          0.07  (seconds)                    DEFLEC18
 AA5758
 AA5758  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5758  Standards:
 AA5758         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5758            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5758  -------------------------------------------------------------------
 AA5758  NETWORK    2.22   2.74           1.00   0.79   1.40      0.02198443
 AA5758  -------------------------------------------------------------------
 AA5758  Click here for local accuracies and other accuracy information.
 AA5758
 AA5758.The horizontal coordinates were established by GPS observations
 AA5758.and adjusted by the National Geodetic Survey in June 2012.
 AA5758
 AA5758.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5758.been affixed to the stable North American tectonic plate. See 
 AA5758.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5758
 AA5758.The horizontal coordinates are valid at the epoch date displayed above
 AA5758.which is a decimal equivalence of Year/Month/Day.
 AA5758
 AA5758.The orthometric height was determined by GPS observations and a
 AA5758.high-resolution geoid model.
 AA5758
 AA5758.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5758.GEOID18 height accuracy estimate available here.
 AA5758
 AA5758.Click photographs - Photos may exist for this station.
 AA5758
 AA5758.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5758
 AA5758.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5758
 AA5758.The ellipsoidal height was determined by GPS observations
 AA5758.and is referenced to NAD 83.
 AA5758
 AA5758. The following values were computed from the NAD 83(2011) position.
 AA5758
 AA5758;                    North         East     Units Scale Factor Converg.
 AA5758;SPC MD       -   178,868.698   387,733.317   MT  0.99997442   -0 05 21.2
 AA5758;SPC MD       -   586,838.39  1,272,088.39   sFT  0.99997442   -0 05 21.2
 AA5758;UTM  18      - 4,349,805.709   315,225.302   MT  1.00002039   -1 21 23.6
 AA5758
 AA5758!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5758!SPC MD       -   0.99997720  x   0.99997442  =   0.99995162
 AA5758!UTM  18      -   0.99997720  x   1.00002039  =   0.99999759
 AA5758
 AA5758_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1522549805(NAD 83)
 AA5758
 AA5758                          SUPERSEDED SURVEY CONTROL
 AA5758
 AA5758  NAD 83(2007)-  39 16 40.51116(N)    077 08 31.79841(W) AD(2002.00) 0
 AA5758  ELLIP H (02/10/07)  145.352  (m)                       GP(2002.00)    
 AA5758  ELLIP H (08/30/02)  145.354  (m)                       GP(       ) 4 2
 AA5758  NAD 83(1991)-  39 16 40.51156(N)    077 08 31.79866(W) AD(       ) 1
 AA5758  ELLIP H (06/13/95)  145.301  (m)                       GP(       ) 4 2
 AA5758
 AA5758.Superseded values are not recommended for survey control.
 AA5758
 AA5758.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5758.See file dsdata.pdf to determine how the superseded data were derived.
 AA5758
 AA5758_MARKER: DD = SURVEY DISK
 AA5758_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5758_STAMPING: 20581
 AA5758_MARK LOGO: WSSC
 AA5758_PROJECTION: RECESSED 10 CENTIMETERS
 AA5758_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5758_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5758+STABILITY: SURFACE MOTION
 AA5758_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5758+SATELLITE: SATELLITE OBSERVATIONS - April 19, 2013
 AA5758
 AA5758  HISTORY     - Date     Condition        Report By
 AA5758  HISTORY     - 1994     MONUMENTED       MSI
 AA5758  HISTORY     - 20130419 GOOD             BASE9
 AA5758
 AA5758                          STATION DESCRIPTION
 AA5758
 AA5758'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5758'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5758'4.7 MI (7.6 KM) NORTH OF THE TOWN OF LAYTONSVILLE.  TO REACH THE
 AA5758'STATION FROM THE INTERSECTION OF DAMASCUS ROAD (S.R. 650) AND
 AA5758'ANNAPOLIS ROCK ROAD (S.R. 94), GO NORTH 1.0 MI (1.6 KM) ALONG
 AA5758'ANNAPOLIS ROCK ROAD TO THE STATION ON THE RIGHT.
 AA5758'
 AA5758'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5758'IS 2 INCHES BELOW GROUND LEVEL, AND STAMPED "T.S. 20581 MC".  THE DISK
 AA5758'IS LOCATED 14.9 M (48.9 FT) NORTHWEST OF MAILBOX NO. 6900, 13.4 M
 AA5758'(44.0 FT) WEST OF MAILBOX NO. 6901, 4.65 M (15.26 FT) SOUTHWEST OF THE
 AA5758'CENTERLINE OF THE ROAD, AND 58.9 M (193.2 FT) SOUTHEAST OF MAILBOX NO.
 AA5758'6935.
 AA5758
 AA5758                          STATION RECOVERY (2013)
 AA5758
 AA5758'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 AA5758'MARK IS 14.38 M (47.2 FT) NORTHWEST OF MAILBOX 6900 AND 1.47 M (4.8
 AA5758'FT) SOUTHWEST OF THE EDGE OF THE PAVEMENT OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5759 ***********************************************************************
 AA5759  DESIGNATION -  20582
 AA5759  PID         -  AA5759
 AA5759  STATE/COUNTY-  MD/MONTGOMERY
 AA5759  COUNTRY     -  US
 AA5759  USGS QUAD   -  STERLING (2019)
 AA5759
 AA5759                         *CURRENT SURVEY CONTROL
 AA5759  ______________________________________________________________________
 AA5759* NAD 83(2011) POSITION- 39 07 22.94787(N) 077 29 01.68126(W)   ADJUSTED
 AA5759* NAD 83(2011) ELLIP HT-    38.024 (meters)        (06/27/12)   ADJUSTED
 AA5759* NAD 83(2011) EPOCH   -  2010.00
 AA5759* NAVD 88 ORTHO HEIGHT -    70.3   (meters)      231.    (feet) GPS OBS
 AA5759  ______________________________________________________________________
 AA5759  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5759  GEOID HEIGHT    -         -32.63 (meters)                     GEOID93
 AA5759  GEOID HEIGHT    -        -32.276 (meters)                     GEOID18
 AA5759  NAD 83(2011) X  -  1,073,771.641 (meters)                     COMP
 AA5759  NAD 83(2011) Y  - -4,836,998.434 (meters)                     COMP
 AA5759  NAD 83(2011) Z  -  4,002,947.287 (meters)                     COMP
 AA5759  LAPLACE CORR    -          5.19  (seconds)                    DEFLEC18
 AA5759
 AA5759  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5759  Standards:
 AA5759         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5759            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5759  -------------------------------------------------------------------
 AA5759  NETWORK    2.89   4.29           1.27   1.08   2.19      0.03327444
 AA5759  -------------------------------------------------------------------
 AA5759  Click here for local accuracies and other accuracy information.
 AA5759
 AA5759.The horizontal coordinates were established by GPS observations
 AA5759.and adjusted by the National Geodetic Survey in June 2012.
 AA5759
 AA5759.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5759.been affixed to the stable North American tectonic plate. See 
 AA5759.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5759
 AA5759.The horizontal coordinates are valid at the epoch date displayed above
 AA5759.which is a decimal equivalence of Year/Month/Day.
 AA5759
 AA5759.The orthometric height was determined by GPS observations and a
 AA5759.high-resolution geoid model.
 AA5759
 AA5759.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5759.GEOID18 height accuracy estimate available here.
 AA5759
 AA5759.Click photographs - Photos may exist for this station.
 AA5759
 AA5759.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5759
 AA5759.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5759
 AA5759.The ellipsoidal height was determined by GPS observations
 AA5759.and is referenced to NAD 83.
 AA5759
 AA5759. The following values were computed from the NAD 83(2011) position.
 AA5759
 AA5759;                    North         East     Units Scale Factor Converg.
 AA5759;SPC MD       -   161,776.063   358,164.703   MT  0.99995913   -0 18 13.1
 AA5759;SPC MD       -   530,760.30  1,175,078.70   sFT  0.99995913   -0 18 13.1
 AA5759;UTM  18      - 4,333,368.401   285,282.522   MT  1.00016771   -1 34 04.2
 AA5759
 AA5759!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5759!SPC MD       -   0.99999403  x   0.99995913  =   0.99995316
 AA5759!UTM  18      -   0.99999403  x   1.00016771  =   1.00016174
 AA5759
 AA5759_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8528233368(NAD 83)
 AA5759
 AA5759                          SUPERSEDED SURVEY CONTROL
 AA5759
 AA5759  NAD 83(2007)-  39 07 22.94810(N)    077 29 01.68162(W) AD(2002.00) 0
 AA5759  ELLIP H (02/10/07)   38.064  (m)                       GP(2002.00)    
 AA5759  ELLIP H (08/30/02)   38.051  (m)                       GP(       ) 4 2
 AA5759  NAD 83(1991)-  39 07 22.94815(N)    077 29 01.68153(W) AD(       ) 1
 AA5759  ELLIP H (06/13/95)   38.045  (m)                       GP(       ) 4 2
 AA5759
 AA5759.Superseded values are not recommended for survey control.
 AA5759
 AA5759.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5759.See file dsdata.pdf to determine how the superseded data were derived.
 AA5759
 AA5759_MARKER: DD = SURVEY DISK
 AA5759_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5759_STAMPING: T.S. 20582 MC
 AA5759_MARK LOGO: WSSC
 AA5759_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5759_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5759+STABILITY: SURFACE MOTION
 AA5759_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5759+SATELLITE: SATELLITE OBSERVATIONS - November 18, 2012
 AA5759
 AA5759  HISTORY     - Date     Condition        Report By
 AA5759  HISTORY     - 1994     MONUMENTED       MSI
 AA5759  HISTORY     - 20030605 GOOD             DEWDAV
 AA5759  HISTORY     - 20121118 GOOD             NGS
 AA5759
 AA5759                          STATION DESCRIPTION
 AA5759
 AA5759'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5759'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5759'4.0 MI (6.4 KM) WEST OF THE TOWN OF POOLESVILLE.  TO REACH THE STATION
 AA5759'FROM THE JUNCTION OF WHITES FERRY ROAD AND RIVER ROAD, WHICH IS JUST
 AA5759'EAST OF THE WHITES FERRY CROSSING OVER THE POTOMAC RIVER, GO SOUTH 3.6
 AA5759'MI (5.8 KM) ALONG RIVER ROAD TO THE JUNCTION WITH ELMER SCHOOL ROAD.
 AA5759'CONTINUE NORTH ALONG ELMER SCHOOL ROAD TO THE STATION ON THE RIGHT
 AA5759'NEXT TO THE NATIONAL INSTITUTE OF HEALTH ANIMAL FARM.
 AA5759'
 AA5759'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5759'IS 2 INCHES BELOW GROUND LEVEL, AND STAMPED "T.S. 20582 MC".  THE DISK
 AA5759'IS LOCATED 15.1 M (49.5 FT) EAST-SOUTHEAST OF THE CENTERLINE OF THE
 AA5759'ROAD, 16.45 M (53.97 FT) SOUTH-SOUTHEAST OF POWER POLE NO. 107, 12.25
 AA5759'M (40.19 FT) WEST-NORTHWEST OF THE CHAINLINK FENCELINE, AND 0.65 M
 AA5759'(2.13 FT) WEST-NORTHWEST OF AN ORANGE CARSONITE WITNESS POST.
 AA5759
 AA5759                          STATION RECOVERY (2003)
 AA5759
 AA5759'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (CSW)
 AA5759'RECOVERED IN GOOD CONDITION.
 AA5759
 AA5759                          STATION RECOVERY (2012)
 AA5759
 AA5759'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (DRD)
 AA5759'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5760 ***********************************************************************
 AA5760  DESIGNATION -  20583
 AA5760  PID         -  AA5760
 AA5760  STATE/COUNTY-  MD/MONTGOMERY
 AA5760  COUNTRY     -  US
 AA5760  USGS QUAD   -  SANDY SPRING (2016)
 AA5760
 AA5760                         *CURRENT SURVEY CONTROL
 AA5760  ______________________________________________________________________
 AA5760* NAD 83(2011) POSITION- 39 11 13.88446(N) 077 01 28.24244(W)   ADJUSTED
 AA5760* NAD 83(2011) ELLIP HT-   105.315 (meters)        (06/27/12)   ADJUSTED
 AA5760* NAD 83(2011) EPOCH   -  2010.00
 AA5760* NAVD 88 ORTHO HEIGHT -   137.2   (meters)      450.    (feet) GPS OBS
 AA5760  ______________________________________________________________________
 AA5760  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5760  GEOID HEIGHT    -         -32.23 (meters)                     GEOID93
 AA5760  GEOID HEIGHT    -        -31.888 (meters)                     GEOID18
 AA5760  NAD 83(2011) X  -  1,111,512.595 (meters)                     COMP
 AA5760  NAD 83(2011) Y  - -4,823,904.465 (meters)                     COMP
 AA5760  NAD 83(2011) Z  -  4,008,512.306 (meters)                     COMP
 AA5760  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 AA5760
 AA5760  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5760  Standards:
 AA5760         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5760            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5760  -------------------------------------------------------------------
 AA5760  NETWORK    3.77   4.92           1.66   1.40   2.51      0.07181317
 AA5760  -------------------------------------------------------------------
 AA5760  Click here for local accuracies and other accuracy information.
 AA5760
 AA5760.The horizontal coordinates were established by GPS observations
 AA5760.and adjusted by the National Geodetic Survey in June 2012.
 AA5760
 AA5760.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5760.been affixed to the stable North American tectonic plate. See 
 AA5760.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5760
 AA5760.The horizontal coordinates are valid at the epoch date displayed above
 AA5760.which is a decimal equivalence of Year/Month/Day.
 AA5760
 AA5760.The orthometric height was determined by GPS observations and a
 AA5760.high-resolution geoid model.
 AA5760
 AA5760.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5760.GEOID18 height accuracy estimate available here.
 AA5760
 AA5760.Click photographs - Photos may exist for this station.
 AA5760
 AA5760.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5760
 AA5760.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5760
 AA5760.The ellipsoidal height was determined by GPS observations
 AA5760.and is referenced to NAD 83.
 AA5760
 AA5760. The following values were computed from the NAD 83(2011) position.
 AA5760
 AA5760;                    North         East     Units Scale Factor Converg.
 AA5760;SPC MD       -   168,786.946   397,882.313   MT  0.99996458   -0 00 55.4
 AA5760;SPC MD       -   553,761.84  1,305,385.56   sFT  0.99996458   -0 00 55.4
 AA5760;UTM  18      - 4,339,501.937   325,149.413   MT  0.99997645   -1 16 46.3
 AA5760
 AA5760!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5760!SPC MD       -   0.99998348  x   0.99996458  =   0.99994806
 AA5760!UTM  18      -   0.99998348  x   0.99997645  =   0.99995993
 AA5760
 AA5760_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2514939501(NAD 83)
 AA5760
 AA5760                          SUPERSEDED SURVEY CONTROL
 AA5760
 AA5760  NAD 83(2007)-  39 11 13.88429(N)    077 01 28.24461(W) AD(2002.00) 0
 AA5760  ELLIP H (02/10/07)  105.326  (m)                       GP(2002.00)    
 AA5760  ELLIP H (08/30/02)  105.329  (m)                       GP(       ) 4 2
 AA5760  NAD 83(1991)-  39 11 13.88482(N)    077 01 28.24417(W) AD(       ) 1
 AA5760  ELLIP H (06/13/95)  105.261  (m)                       GP(       ) 4 2
 AA5760
 AA5760.Superseded values are not recommended for survey control.
 AA5760
 AA5760.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5760.See file dsdata.pdf to determine how the superseded data were derived.
 AA5760
 AA5760_MARKER: DD = SURVEY DISK
 AA5760_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5760_STAMPING: T.S. 20583 MC
 AA5760_MARK LOGO: WSSC
 AA5760_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5760_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5760+STABILITY: SURFACE MOTION
 AA5760_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5760+SATELLITE: SATELLITE OBSERVATIONS - December 30, 2008
 AA5760
 AA5760  HISTORY     - Date     Condition        Report By
 AA5760  HISTORY     - 1994     MONUMENTED       MSI
 AA5760  HISTORY     - 20010403 GOOD             DMW
 AA5760  HISTORY     - 20081230 GOOD             NGS
 AA5760
 AA5760                          STATION DESCRIPTION
 AA5760
 AA5760'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5760'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5760'2.0 MI (3.2 KM) EAST OF THE TOWN OF BROOKEVILLE.  TO REACH THE STATION
 AA5760'FROM THE JUNCTION OF BRIGHTON DAM ROAD AND NEW HAMPSHIRE AVENUE (S.R.
 AA5760'650), GO SOUTH 0.4 MI (0.6 KM) ALONG NEW HAMPSHIRE AVENUE TO THE
 AA5760'JUNCTION WITH BRIGHTON KNOLLS DRIVE. TURN LEFT ON BRIGHTON KNOLLS
 AA5760'DRIVE TO THE STATION ON THE IMMEDIATE RIGHT, AT A GUARD RAIL.
 AA5760'
 AA5760'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5760'IS 2 INCHES BELOW GROUND LEVEL, AND STAMPED "T.S. 20583 MC".  THE DISK
 AA5760'IS LOCATED 12.2 MI (19.6 KM) NORTHWEST OF THE LIGHT POLE, 6.2 M (20.3
 AA5760'FT) SOUTHWEST OF THE CENTERLINE OF BRIGHTON KNOLLS DRIVE, 1.1 MI (1.8
 AA5760'KM) NORTHEAST OF THE GUARD RAIL AND 4.2 M (13.8 FT) EAST-SOUTHEAST OF
 AA5760'THE WEST END OF THE GUARD RAIL.
 AA5760
 AA5760                          STATION RECOVERY (2001)
 AA5760
 AA5760'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 AA5760'RECOVERED IN GOOD CONDITION.
 AA5760
 AA5760                          STATION RECOVERY (2008)
 AA5760
 AA5760'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 AA5760'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5762 ***********************************************************************
 AA5762  DESIGNATION -  20585
 AA5762  PID         -  AA5762
 AA5762  STATE/COUNTY-  MD/MONTGOMERY
 AA5762  COUNTRY     -  US
 AA5762  USGS QUAD   -  SANDY SPRING (2016)
 AA5762
 AA5762                         *CURRENT SURVEY CONTROL
 AA5762  ______________________________________________________________________
 AA5762* NAD 83(2011) POSITION- 39 14 40.57414(N) 077 06 55.74827(W)   ADJUSTED
 AA5762* NAD 83(2011) ELLIP HT-   151.333 (meters)        (06/27/12)   ADJUSTED
 AA5762* NAD 83(2011) EPOCH   -  2010.00
 AA5762* NAVD 88 ORTHO HEIGHT -   183.1   (meters)      601.    (feet) GPS OBS
 AA5762  ______________________________________________________________________
 AA5762  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5762  GEOID HEIGHT    -         -32.14 (meters)                     GEOID93
 AA5762  GEOID HEIGHT    -        -31.792 (meters)                     GEOID18
 AA5762  NAD 83(2011) X  -  1,102,961.139 (meters)                     COMP
 AA5762  NAD 83(2011) Y  - -4,821,769.419 (meters)                     COMP
 AA5762  NAD 83(2011) Z  -  4,013,479.923 (meters)                     COMP
 AA5762  LAPLACE CORR    -         -0.84  (seconds)                    DEFLEC18
 AA5762
 AA5762  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5762  Standards:
 AA5762         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5762            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5762  -------------------------------------------------------------------
 AA5762  NETWORK    2.35   3.00           1.05   0.85   1.53      0.09383585
 AA5762  -------------------------------------------------------------------
 AA5762  Click here for local accuracies and other accuracy information.
 AA5762
 AA5762.The horizontal coordinates were established by GPS observations
 AA5762.and adjusted by the National Geodetic Survey in June 2012.
 AA5762
 AA5762.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5762.been affixed to the stable North American tectonic plate. See 
 AA5762.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5762
 AA5762.The horizontal coordinates are valid at the epoch date displayed above
 AA5762.which is a decimal equivalence of Year/Month/Day.
 AA5762
 AA5762.The orthometric height was determined by GPS observations and a
 AA5762.high-resolution geoid model.
 AA5762
 AA5762.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5762.GEOID18 height accuracy estimate available here.
 AA5762
 AA5762.Click photographs - Photos may exist for this station.
 AA5762
 AA5762.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5762
 AA5762.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5762
 AA5762.The ellipsoidal height was determined by GPS observations
 AA5762.and is referenced to NAD 83.
 AA5762
 AA5762. The following values were computed from the NAD 83(2011) position.
 AA5762
 AA5762;                    North         East     Units Scale Factor Converg.
 AA5762;SPC MD       -   175,166.817   390,030.728   MT  0.99997052   -0 04 20.9
 AA5762;SPC MD       -   574,693.13  1,279,625.81   sFT  0.99997052   -0 04 20.9
 AA5762;UTM  18      - 4,346,053.781   317,440.407   MT  1.00001037   -1 20 19.3
 AA5762
 AA5762!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5762!SPC MD       -   0.99997626  x   0.99997052  =   0.99994678
 AA5762!UTM  18      -   0.99997626  x   1.00001037  =   0.99998663
 AA5762
 AA5762_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1744046053(NAD 83)
 AA5762
 AA5762                          SUPERSEDED SURVEY CONTROL
 AA5762
 AA5762  NAD 83(2007)-  39 14 40.57396(N)    077 06 55.74965(W) AD(2002.00) 0
 AA5762  ELLIP H (02/10/07)  151.358  (m)                       GP(2002.00)    
 AA5762  ELLIP H (08/30/02)  151.361  (m)                       GP(       ) 4 2
 AA5762  NAD 83(1991)-  39 14 40.57417(N)    077 06 55.74962(W) AD(       ) 1
 AA5762  ELLIP H (06/13/95)  151.286  (m)                       GP(       ) 4 2
 AA5762
 AA5762.Superseded values are not recommended for survey control.
 AA5762
 AA5762.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5762.See file dsdata.pdf to determine how the superseded data were derived.
 AA5762
 AA5762_MARKER: DD = SURVEY DISK
 AA5762_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5762_STAMPING: T.S. 20585 MC
 AA5762_MARK LOGO: WSSC
 AA5762_PROJECTION: RECESSED 3 CENTIMETERS
 AA5762_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5762_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5762+STABILITY: SURFACE MOTION
 AA5762_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5762+SATELLITE: SATELLITE OBSERVATIONS - September 11, 2013
 AA5762
 AA5762  HISTORY     - Date     Condition        Report By
 AA5762  HISTORY     - 1994     MONUMENTED       MSI
 AA5762  HISTORY     - 20130911 GOOD             BASE9
 AA5762
 AA5762                          STATION DESCRIPTION
 AA5762
 AA5762'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5762'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5762'3.0 MI (4.8 KM) NORTHEAST OF THE TOWN OF LAYTONSVILLE.  TO REACH THE
 AA5762'STATION FROM THE JUNCTION OF DAMASCUS ROAD (S.R. 650) AND LAYTONSVILLE
 AA5762'ROAD (S.R. 108), GO EAST 1.7 MI (2.7 KM) ALONG DAMASCUS ROAD TO THE
 AA5762'STATION ON THE LEFT NEAR DRIVEWAY NO. 5701.
 AA5762'
 AA5762'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5762'IS 1 INCH BELOW GROUND LEVEL, AND STAMPED "T.S. 20585 MC".  THE DISK
 AA5762'IS LOCATED 6.2 M (20.3 FT) NORTHEAST OF THE CENTERLINE OF ROAD, 13.8 M
 AA5762'(45.3 FT) EAST-NORTHEAST OF POWER POLE NO. 15A, 15.7 M (51.5 FT)
 AA5762'SOUTHEAST OF TELEPHONE PEDESTAL NO. 34, 2.6 M (8.5 FT) EAST OF THE
 AA5762'MAILBOX NO. 5701, AND 21.1 M (69.2 FT) SOUTH-SOUTHWEST OF THE POWER
 AA5762'POLE ALONG THE DRIVEWAY.
 AA5762
 AA5762                          STATION RECOVERY (2013)
 AA5762
 AA5762'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 AA5762'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5763 ***********************************************************************
 AA5763  DESIGNATION -  20586
 AA5763  PID         -  AA5763
 AA5763  STATE/COUNTY-  MD/MONTGOMERY
 AA5763  COUNTRY     -  US
 AA5763  USGS QUAD   -  GERMANTOWN (2016)
 AA5763
 AA5763                         *CURRENT SURVEY CONTROL
 AA5763  ______________________________________________________________________
 AA5763* NAD 83(2011) POSITION- 39 14 37.72731(N) 077 19 59.57974(W)   ADJUSTED
 AA5763* NAD 83(2011) ELLIP HT-   144.415 (meters)        (06/27/12)   ADJUSTED
 AA5763* NAD 83(2011) EPOCH   -  2010.00
 AA5763* NAVD 88 ORTHO HEIGHT -   176.5   (meters)      579.    (feet) GPS OBS
 AA5763  ______________________________________________________________________
 AA5763  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5763  GEOID HEIGHT    -         -32.42 (meters)                     GEOID93
 AA5763  GEOID HEIGHT    -        -32.065 (meters)                     GEOID18
 AA5763  NAD 83(2011) X  -  1,084,640.911 (meters)                     COMP
 AA5763  NAD 83(2011) Y  - -4,825,974.943 (meters)                     COMP
 AA5763  NAD 83(2011) Z  -  4,013,407.552 (meters)                     COMP
 AA5763  LAPLACE CORR    -          5.38  (seconds)                    DEFLEC18
 AA5763
 AA5763  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5763  Standards:
 AA5763         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5763            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5763  -------------------------------------------------------------------
 AA5763  NETWORK    2.91   3.86           1.30   1.05   1.97     -0.04194872
 AA5763  -------------------------------------------------------------------
 AA5763  Click here for local accuracies and other accuracy information.
 AA5763
 AA5763.The horizontal coordinates were established by GPS observations
 AA5763.and adjusted by the National Geodetic Survey in June 2012.
 AA5763
 AA5763.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5763.been affixed to the stable North American tectonic plate. See 
 AA5763.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5763
 AA5763.The horizontal coordinates are valid at the epoch date displayed above
 AA5763.which is a decimal equivalence of Year/Month/Day.
 AA5763
 AA5763.The orthometric height was determined by GPS observations and a
 AA5763.high-resolution geoid model.
 AA5763
 AA5763.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5763.GEOID18 height accuracy estimate available here.
 AA5763
 AA5763.Click photographs - Photos may exist for this station.
 AA5763
 AA5763.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5763
 AA5763.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5763
 AA5763.The ellipsoidal height was determined by GPS observations
 AA5763.and is referenced to NAD 83.
 AA5763
 AA5763. The following values were computed from the NAD 83(2011) position.
 AA5763
 AA5763;                    North         East     Units Scale Factor Converg.
 AA5763;SPC MD       -   175,125.219   371,234.885   MT  0.99997043   -0 12 32.9
 AA5763;SPC MD       -   574,556.66  1,217,959.79   sFT  0.99997043   -0 12 32.9
 AA5763;UTM  18      - 4,346,427.766   298,646.668   MT  1.00009922   -1 28 35.5
 AA5763
 AA5763!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5763!SPC MD       -   0.99997734  x   0.99997043  =   0.99994777
 AA5763!UTM  18      -   0.99997734  x   1.00009922  =   1.00007656
 AA5763
 AA5763_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9864646427(NAD 83)
 AA5763
 AA5763                          SUPERSEDED SURVEY CONTROL
 AA5763
 AA5763  NAD 83(2007)-  39 14 37.72746(N)    077 19 59.57978(W) AD(2002.00) 0
 AA5763  ELLIP H (02/10/07)  144.471  (m)                       GP(2002.00)    
 AA5763  ELLIP H (08/30/02)  144.471  (m)                       GP(       ) 4 2
 AA5763  NAD 83(1991)-  39 14 37.72809(N)    077 19 59.57993(W) AD(       ) 1
 AA5763  ELLIP H (06/13/95)  144.434  (m)                       GP(       ) 4 2
 AA5763
 AA5763.Superseded values are not recommended for survey control.
 AA5763
 AA5763.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5763.See file dsdata.pdf to determine how the superseded data were derived.
 AA5763
 AA5763_MARKER: DD = SURVEY DISK
 AA5763_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5763_STAMPING: T.S. 20586 MC
 AA5763_MARK LOGO: WSSC
 AA5763_PROJECTION: RECESSED 9 CENTIMETERS
 AA5763_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5763_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5763+STABILITY: SURFACE MOTION
 AA5763_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5763+SATELLITE: SATELLITE OBSERVATIONS - November 25, 2014
 AA5763
 AA5763  HISTORY     - Date     Condition        Report By
 AA5763  HISTORY     - 1994     MONUMENTED       MSI
 AA5763  HISTORY     - 20141125 GOOD             BASE9
 AA5763
 AA5763                          STATION DESCRIPTION
 AA5763
 AA5763'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5763'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5763'3.0 MI (4.8 KM) NORTHEAST OF THE TOWN OF BARNESVILLE.  TO REACH THE
 AA5763'STATION FROM THE JUNCTION OF FREDERICK ROAD (S.R. 355) AND COMUS ROAD,
 AA5763'GO WEST 2.1 MI (3.4 KM) ALONG COMUS ROAD TO THE STATION ON THE RIGHT
 AA5763'AND APPROXIMATELY 200 FT (61.0 M) EAST OF SUNRIDGE LANE.
 AA5763'
 AA5763'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5763'IS 2 INCHES BELOW GROUND LEVEL, AND STAMPED "T.S. 20586 MC".  THE DISK
 AA5763'IS LOCATED 4.3 M (14.1 FT) WEST-NORTHWEST OF POWER POLE NO. 25A, 25.2
 AA5763'M (82.7 FT) SOUTHEAST OF POWER POLE NO. F27758. 7.4 M (24.3 FT)
 AA5763'SOUTHWEST OF THE FENCELINE, AND 4.65 M (15.26 FT) NORTHEAST OF THE
 AA5763'CENTERLINE OF ROAD.
 AA5763
 AA5763                          STATION RECOVERY (2014)
 AA5763
 AA5763'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 AA5763'MARK IS LOCATED DIRECTLY ACROSS THE STREET FROM THE CENTERLINE OF THE
 AA5763'DRIVEWAY LEADING TO 16000 COMUS ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5764 ***********************************************************************
 AA5764  DESIGNATION -  20587
 AA5764  PID         -  AA5764
 AA5764  STATE/COUNTY-  MD/MONTGOMERY
 AA5764  COUNTRY     -  US
 AA5764  USGS QUAD   -  POOLESVILLE (2016)
 AA5764
 AA5764                         *CURRENT SURVEY CONTROL
 AA5764  ______________________________________________________________________
 AA5764* NAD 83(2011) POSITION- 39 10 42.78726(N) 077 25 53.54447(W)   ADJUSTED
 AA5764* NAD 83(2011) ELLIP HT-   100.380 (meters)        (06/27/12)   ADJUSTED
 AA5764* NAD 83(2011) EPOCH   -  2010.00
 AA5764* NAVD 88 ORTHO HEIGHT -   132.6   (meters)      435.    (feet) GPS OBS
 AA5764  ______________________________________________________________________
 AA5764  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5764  GEOID HEIGHT    -         -32.58 (meters)                     GEOID93
 AA5764  GEOID HEIGHT    -        -32.221 (meters)                     GEOID18
 AA5764  NAD 83(2011) X  -  1,077,346.907 (meters)                     COMP
 AA5764  NAD 83(2011) Y  - -4,832,266.492 (meters)                     COMP
 AA5764  NAD 83(2011) Z  -  4,007,765.827 (meters)                     COMP
 AA5764  LAPLACE CORR    -          6.36  (seconds)                    DEFLEC18
 AA5764
 AA5764  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5764  Standards:
 AA5764         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5764            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5764  -------------------------------------------------------------------
 AA5764  NETWORK    2.58   3.37           1.14   0.95   1.72      0.05121086
 AA5764  -------------------------------------------------------------------
 AA5764  Click here for local accuracies and other accuracy information.
 AA5764
 AA5764.The horizontal coordinates were established by GPS observations
 AA5764.and adjusted by the National Geodetic Survey in June 2012.
 AA5764
 AA5764.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5764.been affixed to the stable North American tectonic plate. See 
 AA5764.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5764
 AA5764.The horizontal coordinates are valid at the epoch date displayed above
 AA5764.which is a decimal equivalence of Year/Month/Day.
 AA5764
 AA5764.The orthometric height was determined by GPS observations and a
 AA5764.high-resolution geoid model.
 AA5764
 AA5764.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5764.GEOID18 height accuracy estimate available here.
 AA5764
 AA5764.Click photographs - Photos may exist for this station.
 AA5764
 AA5764.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5764
 AA5764.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5764
 AA5764.The ellipsoidal height was determined by GPS observations
 AA5764.and is referenced to NAD 83.
 AA5764
 AA5764. The following values were computed from the NAD 83(2011) position.
 AA5764
 AA5764;                    North         East     Units Scale Factor Converg.
 AA5764;SPC MD       -   167,915.834   362,712.857   MT  0.99996377   -0 16 15.1
 AA5764;SPC MD       -   550,903.87  1,190,000.43   sFT  0.99996377   -0 16 15.1
 AA5764;UTM  18      - 4,339,407.439   289,966.022   MT  1.00014321   -1 32 12.0
 AA5764
 AA5764!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5764!SPC MD       -   0.99998425  x   0.99996377  =   0.99994802
 AA5764!UTM  18      -   0.99998425  x   1.00014321  =   1.00012746
 AA5764
 AA5764_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8996639407(NAD 83)
 AA5764
 AA5764                          SUPERSEDED SURVEY CONTROL
 AA5764
 AA5764  NAD 83(2007)-  39 10 42.78745(N)    077 25 53.54415(W) AD(2002.00) 0
 AA5764  ELLIP H (02/10/07)  100.424  (m)                       GP(2002.00)    
 AA5764  ELLIP H (08/30/02)  100.411  (m)                       GP(       ) 4 2
 AA5764  NAD 83(1991)-  39 10 42.78791(N)    077 25 53.54405(W) AD(       ) 1
 AA5764  ELLIP H (06/13/95)  100.370  (m)                       GP(       ) 4 2
 AA5764
 AA5764.Superseded values are not recommended for survey control.
 AA5764
 AA5764.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5764.See file dsdata.pdf to determine how the superseded data were derived.
 AA5764
 AA5764_MARKER: DD = SURVEY DISK
 AA5764_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5764_STAMPING: T.S. 20587 MC
 AA5764_MARK LOGO: WSSC
 AA5764_PROJECTION: PROJECTING 3 CENTIMETERS
 AA5764_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5764_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5764+STABILITY: SURFACE MOTION
 AA5764_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AA5764+SATELLITE: SATELLITE OBSERVATIONS - November 04, 2014
 AA5764
 AA5764  HISTORY     - Date     Condition        Report By
 AA5764  HISTORY     - 1994     MONUMENTED       MSI
 AA5764  HISTORY     - 20141104 GOOD             BASE9
 AA5764
 AA5764                          STATION DESCRIPTION
 AA5764
 AA5764'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5764'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5764'2.5 MI (4.0 KM) NORTH OF THE TOWN OF POOLESVILLE.  TO REACH THE
 AA5764'STATION FROM THE INTERSECTION OF DARNESTOWN ROAD (S.R. 28) AND
 AA5764'BEALLSVILLE ROAD (S.R. 109) LOCATED IN THE VILLAGE OF BEALLSVILLE, GO
 AA5764'NORTHWEST 0.1 MI (0.2 KM) ALONG DARNESTOWN ROAD TO THE INTERSECTION
 AA5764'WITH WEST HUNTER ROAD ON THE LEFT.  TURN LEFT AND GO WEST 1.0 MI (1.6
 AA5764'KM) ALONG WEST HUNTER ROAD TO THE STATION ON THE LEFT.
 AA5764'
 AA5764'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5764'IS 1 INCH ABOVE GROUND LEVEL, AND STAMPED "T.S. 20587 MC".  THE DISK
 AA5764'IS LOCATED 1.0 M (3.3 FT) NORTH OF A FENCELINE, 7.25 M (23.79 FT)
 AA5764'SOUTH OF THE CENTERLINE OF THE ROAD, 27.2 M (89.2 FT) WEST-NORTHWEST
 AA5764'OF POWER POLE NO. 2897, 30.2 M (99.1 FT) EAST-SOUTHEAST OF POWER POLE
 AA5764'NO. 2898, AND 0.85 M (2.79 FT) NORTH OF AN ORANGE CARSONITE WITNESS
 AA5764'POST.
 AA5764
 AA5764                          STATION RECOVERY (2014)
 AA5764
 AA5764'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 AA5764'CONSIDERABLE TREE COVER FROM EAST TO WEST ON THE SOUTH SIDE OF THE
 AA5764'MARK COULD MAKE FOR POOR GPS SIGNAL RECEPTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5765 ***********************************************************************
 AA5765  DESIGNATION -  20588
 AA5765  PID         -  AA5765
 AA5765  STATE/COUNTY-  MD/MONTGOMERY
 AA5765  COUNTRY     -  US
 AA5765  USGS QUAD   -  URBANA (2016)
 AA5765
 AA5765                         *CURRENT SURVEY CONTROL
 AA5765  ______________________________________________________________________
 AA5765* NAD 83(2011) POSITION- 39 16 36.80234(N) 077 19 25.30788(W)   ADJUSTED
 AA5765* NAD 83(2011) ELLIP HT-    83.957 (meters)        (06/27/12)   ADJUSTED
 AA5765* NAD 83(2011) EPOCH   -  2010.00
 AA5765* NAVD 88 ORTHO HEIGHT -   116.1   (meters)      381.    (feet) GPS OBS
 AA5765  ______________________________________________________________________
 AA5765  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5765  GEOID HEIGHT    -         -32.47 (meters)                     GEOID93
 AA5765  GEOID HEIGHT    -        -32.124 (meters)                     GEOID18
 AA5765  NAD 83(2011) X  -  1,084,922.508 (meters)                     COMP
 AA5765  NAD 83(2011) Y  - -4,823,481.685 (meters)                     COMP
 AA5765  NAD 83(2011) Z  -  4,016,212.614 (meters)                     COMP
 AA5765  LAPLACE CORR    -          5.93  (seconds)                    DEFLEC18
 AA5765
 AA5765  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5765  Standards:
 AA5765         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5765            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5765  -------------------------------------------------------------------
 AA5765  NETWORK    2.17   2.80           0.96   0.80   1.43      0.00787566
 AA5765  -------------------------------------------------------------------
 AA5765  Click here for local accuracies and other accuracy information.
 AA5765
 AA5765.The horizontal coordinates were established by GPS observations
 AA5765.and adjusted by the National Geodetic Survey in June 2012.
 AA5765
 AA5765.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5765.been affixed to the stable North American tectonic plate. See 
 AA5765.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5765
 AA5765.The horizontal coordinates are valid at the epoch date displayed above
 AA5765.which is a decimal equivalence of Year/Month/Day.
 AA5765
 AA5765.The orthometric height was determined by GPS observations and a
 AA5765.high-resolution geoid model.
 AA5765
 AA5765.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5765.GEOID18 height accuracy estimate available here.
 AA5765
 AA5765.Click photographs - Photos may exist for this station.
 AA5765
 AA5765.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5765
 AA5765.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5765
 AA5765.The ellipsoidal height was determined by GPS observations
 AA5765.and is referenced to NAD 83.
 AA5765
 AA5765. The following values were computed from the NAD 83(2011) position.
 AA5765
 AA5765;                    North         East     Units Scale Factor Converg.
 AA5765;SPC MD       -   178,794.294   372,069.719   MT  0.99997430   -0 12 11.4
 AA5765;SPC MD       -   586,594.28  1,220,698.74   sFT  0.99997430   -0 12 11.4
 AA5765;UTM  18      - 4,350,077.925   299,562.597   MT  1.00009469   -1 28 17.6
 AA5765
 AA5765!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5765!SPC MD       -   0.99998683  x   0.99997430  =   0.99996113
 AA5765!UTM  18      -   0.99998683  x   1.00009469  =   1.00008152
 AA5765
 AA5765_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9956250077(NAD 83)
 AA5765
 AA5765                          SUPERSEDED SURVEY CONTROL
 AA5765
 AA5765  NAD 83(2007)-  39 16 36.80247(N)    077 19 25.30780(W) AD(2002.00) 0
 AA5765  ELLIP H (02/10/07)   84.010  (m)                       GP(2002.00)    
 AA5765  ELLIP H (08/30/02)   84.010  (m)                       GP(       ) 4 2
 AA5765  NAD 83(1991)-  39 16 36.80301(N)    077 19 25.30791(W) AD(       ) 1
 AA5765  ELLIP H (06/13/95)   83.976  (m)                       GP(       ) 4 2
 AA5765
 AA5765.Superseded values are not recommended for survey control.
 AA5765
 AA5765.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5765.See file dsdata.pdf to determine how the superseded data were derived.
 AA5765
 AA5765_MARKER: DD = SURVEY DISK
 AA5765_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5765_STAMPING: T.S. 20588 MC
 AA5765_MARK LOGO: WSSC
 AA5765_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5765_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5765+STABILITY: SURFACE MOTION
 AA5765_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5765+SATELLITE: SATELLITE OBSERVATIONS - January 15, 2010
 AA5765
 AA5765  HISTORY     - Date     Condition        Report By
 AA5765  HISTORY     - 1994     MONUMENTED       MSI
 AA5765  HISTORY     - 20030408 GOOD             GPI
 AA5765  HISTORY     - 20050405 GOOD             USPSQD
 AA5765  HISTORY     - 20100115 GOOD             NGS
 AA5765
 AA5765                          STATION DESCRIPTION
 AA5765
 AA5765'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5765'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5765'11.0 MI (17.7 KM) NORTHWEST OF THE CITY OF GAITHERSBURG.  TO REACH THE
 AA5765'STATION FROM THE CITY OF GAITHERSBURG, DRIVE NORTHWESTERLY ALONG I.S.
 AA5765'270 TO EXIT 22 JUST BEFORE THE FREDERICK COUNTY LINE.  TAKE THE EXIT
 AA5765'TO THE JUNCTION WITH OLD HUNDRED ROAD (S.R. 109).  TURN RIGHT ALONG
 AA5765'OLD HUNDRED ROAD AND CROSS UNDER I.S. 270 TO THE STATION ON THE LEFT,
 AA5765'IN THE APPROXIMATE CENTER OF THE CLOVER-LEAF.
 AA5765'
 AA5765'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5765'IS 2 INCHES ABOVE GROUND LEVEL, AND STAMPED "T.S. 20588 MC". THE DISK
 AA5765'IS LOCATED 49.6 M (162.7 FT) SOUTHWEST OF THE SOUTHEAST POST OF THE
 AA5765'OVERHEAD SIGN ON I.S. 270, 50.3 M (165.0 FT) WEST-NORTHWEST OF LIGHT
 AA5765'POLE ALONG THE I.S. 270 SOUTHBOUND, 61.6 M (202.1 FT) SOUTHEAST OF THE
 AA5765'ELECTRICITY BOX, AND 0.9 M (3.0 FT) NORTH OF AN ORANGE CARSONITE
 AA5765'WITNESS POST.
 AA5765
 AA5765                          STATION RECOVERY (2003)
 AA5765
 AA5765'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2003 (JPG)
 AA5765'RECOVERED IN GOOD CONDITION.
 AA5765
 AA5765                          STATION RECOVERY (2005)
 AA5765
 AA5765'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 AA5765'RECOVERED IN GOOD CONDITION.
 AA5765
 AA5765                          STATION RECOVERY (2010)
 AA5765
 AA5765'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 AA5765'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5766 ***********************************************************************
 AA5766  DESIGNATION -  20589
 AA5766  PID         -  AA5766
 AA5766  STATE/COUNTY-  MD/MONTGOMERY
 AA5766  COUNTRY     -  US
 AA5766  USGS QUAD   -  GAITHERSBURG (2016)
 AA5766
 AA5766                         *CURRENT SURVEY CONTROL
 AA5766  ______________________________________________________________________
 AA5766* NAD 83(2011) POSITION- 39 14 47.16215(N) 077 13 29.13738(W)   ADJUSTED
 AA5766* NAD 83(2011) ELLIP HT-   189.392 (meters)        (06/27/12)   ADJUSTED
 AA5766* NAD 83(2011) EPOCH   -  2010.00
 AA5766* NAVD 88 ORTHO HEIGHT -   221.3   (meters)      726.    (feet) GPS OBS
 AA5766  ______________________________________________________________________
 AA5766  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5766  GEOID HEIGHT    -         -32.20 (meters)                     GEOID93
 AA5766  GEOID HEIGHT    -        -31.840 (meters)                     GEOID18
 AA5766  NAD 83(2011) X  -  1,093,741.134 (meters)                     COMP
 AA5766  NAD 83(2011) Y  - -4,823,767.611 (meters)                     COMP
 AA5766  NAD 83(2011) Z  -  4,013,661.346 (meters)                     COMP
 AA5766  LAPLACE CORR    -          2.27  (seconds)                    DEFLEC18
 AA5766
 AA5766  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5766  Standards:
 AA5766         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5766            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5766  -------------------------------------------------------------------
 AA5766  NETWORK    3.01   3.86           1.33   1.11   1.97     -0.02477850
 AA5766  -------------------------------------------------------------------
 AA5766  Click here for local accuracies and other accuracy information.
 AA5766
 AA5766.The horizontal coordinates were established by GPS observations
 AA5766.and adjusted by the National Geodetic Survey in June 2012.
 AA5766
 AA5766.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5766.been affixed to the stable North American tectonic plate. See 
 AA5766.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5766
 AA5766.The horizontal coordinates are valid at the epoch date displayed above
 AA5766.which is a decimal equivalence of Year/Month/Day.
 AA5766
 AA5766.The orthometric height was determined by GPS observations and a
 AA5766.high-resolution geoid model.
 AA5766
 AA5766.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5766.GEOID18 height accuracy estimate available here.
 AA5766
 AA5766.Click photographs - Photos may exist for this station.
 AA5766
 AA5766.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5766
 AA5766.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5766
 AA5766.The ellipsoidal height was determined by GPS observations
 AA5766.and is referenced to NAD 83.
 AA5766
 AA5766. The following values were computed from the NAD 83(2011) position.
 AA5766
 AA5766;                    North         East     Units Scale Factor Converg.
 AA5766;SPC MD       -   175,387.557   380,598.123   MT  0.99997072   -0 08 27.8
 AA5766;SPC MD       -   575,417.34  1,248,679.01   sFT  0.99997072   -0 08 27.8
 AA5766;UTM  18      - 4,346,482.987   308,014.408   MT  1.00005385   -1 24 28.6
 AA5766
 AA5766!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5766!SPC MD       -   0.99997029  x   0.99997072  =   0.99994101
 AA5766!UTM  18      -   0.99997029  x   1.00005385  =   1.00002414
 AA5766
 AA5766_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0801446482(NAD 83)
 AA5766
 AA5766                          SUPERSEDED SURVEY CONTROL
 AA5766
 AA5766  NAD 83(2007)-  39 14 47.16234(N)    077 13 29.13818(W) AD(2002.00) 0
 AA5766  ELLIP H (02/10/07)  189.445  (m)                       GP(2002.00)    
 AA5766  ELLIP H (08/30/02)  189.451  (m)                       GP(       ) 4 2
 AA5766  NAD 83(1991)-  39 14 47.16273(N)    077 13 29.13831(W) AD(       ) 1
 AA5766  ELLIP H (06/13/95)  189.402  (m)                       GP(       ) 4 2
 AA5766
 AA5766.Superseded values are not recommended for survey control.
 AA5766
 AA5766.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5766.See file dsdata.pdf to determine how the superseded data were derived.
 AA5766
 AA5766_MARKER: DD = SURVEY DISK
 AA5766_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5766_STAMPING: 20589
 AA5766_MARK LOGO: WSSC
 AA5766_PROJECTION: RECESSED 3 CENTIMETERS
 AA5766_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5766_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5766+STABILITY: SURFACE MOTION
 AA5766_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5766+SATELLITE: SATELLITE OBSERVATIONS - April 19, 2013
 AA5766
 AA5766  HISTORY     - Date     Condition        Report By
 AA5766  HISTORY     - 1994     MONUMENTED       MSI
 AA5766  HISTORY     - 20130419 GOOD             BASE9
 AA5766
 AA5766                          STATION DESCRIPTION
 AA5766
 AA5766'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5766'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5766'6.0 MI (9.7 KM) NORTH OF THE CITY OF GAITHERSBURG.  TO REACH THE
 AA5766'STATION FROM THE JUNCTION OF FREDERICK ROAD (S.R. 355) AND RIDGE ROAD
 AA5766'(S.R. 27) GO NORTH 3.8 MI (6.1 KM) ALONG RIDGE ROAD TO INTERSECTION
 AA5766'WITH KINGS VALLEY ROAD.  TURN RIGHT AND GO SOUTHEAST 0.6 MI (1.0 KM)
 AA5766'ALONG KINGS VALLEY ROAD TO THE STATION ON THE LEFT BESIDE GRAVEL
 AA5766'PARKING FOR SOFT BALL FIELDS.
 AA5766'
 AA5766'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5766'IS 1 INCH BELOW GROUND LEVEL, AND STAMPED "T.S. 20589 MC".  THE DISK
 AA5766'IS LOCATED 4.1 M (13.5 FT) EAST-NORTHEAST OF THE CENTERLINE OF THE
 AA5766'ROAD, 7.75 M (25.43 FT) NORTH-NORTHWEST OF POWER POLE NO. F32731, AND
 AA5766'11.5 M (37.7 FT) NORTHEAST OF POWER POLE NO. F32737.
 AA5766
 AA5766                          STATION RECOVERY (2013)
 AA5766
 AA5766'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 AA5766'MARK IS LEANING TO THE NE, PROBABLY HIT BY MOWER.  COORDINATES COULD
 AA5766'BE SUSPECT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5767 ***********************************************************************
 AA5767  DESIGNATION -  20590
 AA5767  PID         -  AA5767
 AA5767  STATE/COUNTY-  MD/MONTGOMERY
 AA5767  COUNTRY     -  US
 AA5767  USGS QUAD   -  POOLESVILLE (2016)
 AA5767
 AA5767                         *CURRENT SURVEY CONTROL
 AA5767  ______________________________________________________________________
 AA5767* NAD 83(2011) POSITION- 39 08 45.07073(N) 077 24 21.86031(W)   ADJUSTED
 AA5767* NAD 83(2011) ELLIP HT-    86.137 (meters)        (06/27/12)   ADJUSTED
 AA5767* NAD 83(2011) EPOCH   -  2010.00
 AA5767* NAVD 88 ORTHO HEIGHT -   118.3   (meters)      388.    (feet) GPS OBS
 AA5767  ______________________________________________________________________
 AA5767  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5767  GEOID HEIGHT    -         -32.46 (meters)                     GEOID93
 AA5767  GEOID HEIGHT    -        -32.095 (meters)                     GEOID18
 AA5767  NAD 83(2011) X  -  1,079,992.194 (meters)                     COMP
 AA5767  NAD 83(2011) Y  - -4,834,013.769 (meters)                     COMP
 AA5767  NAD 83(2011) Z  -  4,004,942.075 (meters)                     COMP
 AA5767  LAPLACE CORR    -          4.97  (seconds)                    DEFLEC18
 AA5767
 AA5767  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5767  Standards:
 AA5767         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5767            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5767  -------------------------------------------------------------------
 AA5767  NETWORK    3.80   5.70           1.53   1.56   2.91     -0.22365071
 AA5767  -------------------------------------------------------------------
 AA5767  Click here for local accuracies and other accuracy information.
 AA5767
 AA5767.The horizontal coordinates were established by GPS observations
 AA5767.and adjusted by the National Geodetic Survey in June 2012.
 AA5767
 AA5767.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5767.been affixed to the stable North American tectonic plate. See 
 AA5767.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5767
 AA5767.The horizontal coordinates are valid at the epoch date displayed above
 AA5767.which is a decimal equivalence of Year/Month/Day.
 AA5767
 AA5767.The orthometric height was determined by GPS observations and a
 AA5767.high-resolution geoid model.
 AA5767
 AA5767.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5767.GEOID18 height accuracy estimate available here.
 AA5767
 AA5767.Click photographs - Photos may exist for this station.
 AA5767
 AA5767.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5767
 AA5767.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5767
 AA5767.The ellipsoidal height was determined by GPS observations
 AA5767.and is referenced to NAD 83.
 AA5767
 AA5767. The following values were computed from the NAD 83(2011) position.
 AA5767
 AA5767;                    North         East     Units Scale Factor Converg.
 AA5767;SPC MD       -   164,275.710   364,897.237   MT  0.99996093   -0 15 17.5
 AA5767;SPC MD       -   538,961.23  1,197,167.02   sFT  0.99996093   -0 15 17.5
 AA5767;UTM  18      - 4,335,719.324   292,069.863   MT  1.00013238   -1 31 10.2
 AA5767
 AA5767!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5767!SPC MD       -   0.99998649  x   0.99996093  =   0.99994742
 AA5767!UTM  18      -   0.99998649  x   1.00013238  =   1.00011886
 AA5767
 AA5767_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9206935719(NAD 83)
 AA5767
 AA5767                          SUPERSEDED SURVEY CONTROL
 AA5767
 AA5767  NAD 83(2007)-  39 08 45.07095(N)    077 24 21.86018(W) AD(2002.00) 0
 AA5767  ELLIP H (02/10/07)   86.180  (m)                       GP(2002.00)    
 AA5767  ELLIP H (08/30/02)   86.166  (m)                       GP(       ) 4 2
 AA5767  NAD 83(1991)-  39 08 45.07136(N)    077 24 21.86031(W) AD(       ) 1
 AA5767  ELLIP H (06/13/95)   86.114  (m)                       GP(       ) 4 2
 AA5767
 AA5767.Superseded values are not recommended for survey control.
 AA5767
 AA5767.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5767.See file dsdata.pdf to determine how the superseded data were derived.
 AA5767
 AA5767_MARKER: DD = SURVEY DISK
 AA5767_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5767_STAMPING: T.S. 20590 MC
 AA5767_MARK LOGO: WSSC
 AA5767_PROJECTION: FLUSH
 AA5767_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5767_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5767+STABILITY: SURFACE MOTION
 AA5767_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5767+SATELLITE: SATELLITE OBSERVATIONS - June 12, 2019
 AA5767
 AA5767  HISTORY     - Date     Condition        Report By
 AA5767  HISTORY     - 1994     MONUMENTED       MSI
 AA5767  HISTORY     - 20121118 GOOD             NGS
 AA5767  HISTORY     - 20190612 GOOD             NGS
 AA5767
 AA5767                          STATION DESCRIPTION
 AA5767
 AA5767'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5767'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, WITHIN THE TOWN
 AA5767'OF POOLESVILLE .  TO REACH THE STATION FROM THE INTERSECTION OF FISHER
 AA5767'AVENUE (S.R. 107) AND ELGIN ROAD (S.R. 109) WITHIN THE TOWN OF
 AA5767'POOLESVILLE, GO EAST 0.5 MI (0.8 KM) ALONG FISHER AVENUE TO THE
 AA5767'INTERSECTION WITH CATTAIL ROAD ON THE LEFT.  TURN LEFT AND GO NORTH
 AA5767'0.2 MI (0.3 KM) ALONG CATTAIL ROAD TO THE STATION ON THE RIGHT JUST
 AA5767'NORTH OF THE POOLESVILLE ELEMENTARY SCHOOL PLAYGROUND.
 AA5767'
 AA5767'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5767'IS FLUSH WITH GROUND LEVEL, AND STAMPED "T.S. 20590 MC".  THE DISK IS
 AA5767'LOCATED 4.5 M (14.8 FT) NORTH-NORTHEAST OF THE FENCELINE, 2.1 M (6.9
 AA5767'FT) WEST OF THE POWER POLE NO. 589, AND 5.5 M (18.0 FT)
 AA5767'SOUTH-SOUTHWEST OF THE CENTERLINE OF THE ROAD.
 AA5767
 AA5767                          STATION RECOVERY (2012)
 AA5767
 AA5767'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (DRD)
 AA5767'GPS OBSERVATIONS MAY BE PROBLEMATIC DUE TO REFERENCED POWER POLE TO
 AA5767'THE EAST.  MARK IS RECESSED 2 CM.
 AA5767
 AA5767                          STATION RECOVERY (2019)
 AA5767
 AA5767'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 AA5767'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5768 ***********************************************************************
 AA5768  DESIGNATION -  20591
 AA5768  PID         -  AA5768
 AA5768  STATE/COUNTY-  MD/MONTGOMERY
 AA5768  COUNTRY     -  US
 AA5768  USGS QUAD   -  POOLESVILLE (2016)
 AA5768
 AA5768                         *CURRENT SURVEY CONTROL
 AA5768  ______________________________________________________________________
 AA5768* NAD 83(2011) POSITION- 39 12 24.73427(N) 077 22 35.80165(W)   ADJUSTED
 AA5768* NAD 83(2011) ELLIP HT-   132.750 (meters)        (06/27/12)   ADJUSTED
 AA5768* NAD 83(2011) EPOCH   -  2010.00
 AA5768* NAVD 88 ORTHO HEIGHT -   164.9   (meters)      541.    (feet) GPS OBS
 AA5768  ______________________________________________________________________
 AA5768  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5768  GEOID HEIGHT    -         -32.47 (meters)                     GEOID93
 AA5768  GEOID HEIGHT    -        -32.109 (meters)                     GEOID18
 AA5768  NAD 83(2011) X  -  1,081,550.320 (meters)                     COMP
 AA5768  NAD 83(2011) Y  - -4,829,317.173 (meters)                     COMP
 AA5768  NAD 83(2011) Z  -  4,010,222.935 (meters)                     COMP
 AA5768  LAPLACE CORR    -          5.45  (seconds)                    DEFLEC18
 AA5768
 AA5768  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5768  Standards:
 AA5768         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5768            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5768  -------------------------------------------------------------------
 AA5768  NETWORK    2.50   3.14           1.15   0.84   1.60     -0.05832795
 AA5768  -------------------------------------------------------------------
 AA5768  Click here for local accuracies and other accuracy information.
 AA5768
 AA5768.The horizontal coordinates were established by GPS observations
 AA5768.and adjusted by the National Geodetic Survey in June 2012.
 AA5768
 AA5768.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5768.been affixed to the stable North American tectonic plate. See 
 AA5768.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5768
 AA5768.The horizontal coordinates are valid at the epoch date displayed above
 AA5768.which is a decimal equivalence of Year/Month/Day.
 AA5768
 AA5768.The orthometric height was determined by GPS observations and a
 AA5768.high-resolution geoid model.
 AA5768
 AA5768.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5768.GEOID18 height accuracy estimate available here.
 AA5768
 AA5768.Click photographs - Photos may exist for this station.
 AA5768
 AA5768.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5768
 AA5768.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5768
 AA5768.The ellipsoidal height was determined by GPS observations
 AA5768.and is referenced to NAD 83.
 AA5768
 AA5768. The following values were computed from the NAD 83(2011) position.
 AA5768
 AA5768;                    North         East     Units Scale Factor Converg.
 AA5768;SPC MD       -   171,038.598   367,471.890   MT  0.99996650   -0 14 10.9
 AA5768;SPC MD       -   561,149.13  1,205,614.03   sFT  0.99996650   -0 14 10.9
 AA5768;UTM  18      - 4,342,424.783   294,793.695   MT  1.00011852   -1 30 10.2
 AA5768
 AA5768!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5768!SPC MD       -   0.99997917  x   0.99996650  =   0.99994567
 AA5768!UTM  18      -   0.99997917  x   1.00011852  =   1.00009769
 AA5768
 AA5768_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9479342424(NAD 83)
 AA5768
 AA5768                          SUPERSEDED SURVEY CONTROL
 AA5768
 AA5768  NAD 83(2007)-  39 12 24.73449(N)    077 22 35.80142(W) AD(2002.00) 0
 AA5768  ELLIP H (02/10/07)  132.805  (m)                       GP(2002.00)    
 AA5768  ELLIP H (08/30/02)  132.794  (m)                       GP(       ) 4 2
 AA5768  NAD 83(1991)-  39 12 24.73480(N)    077 22 35.80123(W) AD(       ) 1
 AA5768  ELLIP H (06/13/95)  132.751  (m)                       GP(       ) 4 2
 AA5768
 AA5768.Superseded values are not recommended for survey control.
 AA5768
 AA5768.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5768.See file dsdata.pdf to determine how the superseded data were derived.
 AA5768
 AA5768_MARKER: DD = SURVEY DISK
 AA5768_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5768_STAMPING: T.S. 20591 MC
 AA5768_MARK LOGO: WSSC
 AA5768_PROJECTION: RECESSED 3 CENTIMETERS
 AA5768_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5768_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5768+STABILITY: SURFACE MOTION
 AA5768_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5768+SATELLITE: SATELLITE OBSERVATIONS - November 04, 2014
 AA5768
 AA5768  HISTORY     - Date     Condition        Report By
 AA5768  HISTORY     - 1994     MONUMENTED       MSI
 AA5768  HISTORY     - 20141104 GOOD             BASE9
 AA5768
 AA5768                          STATION DESCRIPTION
 AA5768
 AA5768'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5768'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5768'1.0 MI (1.6 KM) SOUTH OF THE TOWN OF BARNESVILLE.  TO REACH THE
 AA5768'STATION FROM THE INTERSECTION OF BARNESVILLE ROAD (S.R. 117) AND
 AA5768'BEALLSVILLE ROAD (S.R. 109 SOUTH) IN THE TOWN OF BARNESVILLE, GO SOUTH
 AA5768'0.9 MI (1.4 KM) ALONG BEALLSVILLE ROAD TO THE INTERSECTION WITH
 AA5768'SELLMAN ROAD ON THE RIGHT AND JUST AFTER THE RAILROAD CROSSING.  TURN
 AA5768'LEFT AND GO EAST 0.35 MI (0.56 KM) ALONG SELLMAN ROAD TO THE STATION
 AA5768'ON THE LEFT NEAR GRAVEL ROAD TO THE WATKINS CABINET COMPANY BUILDING.
 AA5768'
 AA5768'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5768'IS 1 INCH BELOW GROUND LEVEL, AND STAMPED "T.S. 20591 MC".  THE DISK
 AA5768'IS LOCATED 4.65 M (15.26 FT) NORTH-NORTHEAST OF THE CENTERLINE OF THE
 AA5768'ROAD, 10.5 M (34.4 FT) WEST-SOUTHWEST OF THE POWER POLE, 11.0 M (36.1
 AA5768'FT) WEST-NORTHWEST OF THE GRAVEL DRIVEWAY AND 55.1 M (180.8 FT) WEST
 AA5768'OF THE SOUTHWEST CORNER OF THE BUILDING.
 AA5768
 AA5768                          STATION RECOVERY (2014)
 AA5768
 AA5768'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 AA5768'THE MARK IS 10.52 M (34.5 FT) SOUTHEAST OF AN UNNUMBERED UTILITY POLE
 AA5768'ON THE SOUTH SIDE OF SELLMAN ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5769 ***********************************************************************
 AA5769  DESIGNATION -  20592
 AA5769  PID         -  AA5769
 AA5769  STATE/COUNTY-  MD/MONTGOMERY
 AA5769  COUNTRY     -  US
 AA5769  USGS QUAD   -  DAMASCUS (2016)
 AA5769
 AA5769                         *CURRENT SURVEY CONTROL
 AA5769  ______________________________________________________________________
 AA5769* NAD 83(2011) POSITION- 39 15 36.87975(N) 077 11 01.49743(W)   ADJUSTED
 AA5769* NAD 83(2011) ELLIP HT-   162.195 (meters)        (06/27/12)   ADJUSTED
 AA5769* NAD 83(2011) EPOCH   -  2010.00
 AA5769* NAVD 88 ORTHO HEIGHT -   194.1   (meters)      637.    (feet) GPS OBS
 AA5769  ______________________________________________________________________
 AA5769  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5769  GEOID HEIGHT    -         -32.17 (meters)                     GEOID93
 AA5769  GEOID HEIGHT    -        -31.816 (meters)                     GEOID18
 AA5769  NAD 83(2011) X  -  1,096,973.721 (meters)                     COMP
 AA5769  NAD 83(2011) Y  - -4,822,016.949 (meters)                     COMP
 AA5769  NAD 83(2011) Z  -  4,014,831.443 (meters)                     COMP
 AA5769  LAPLACE CORR    -          1.30  (seconds)                    DEFLEC18
 AA5769
 AA5769  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5769  Standards:
 AA5769         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5769            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5769  -------------------------------------------------------------------
 AA5769  NETWORK    2.47   3.14           1.11   0.88   1.60      0.04059865
 AA5769  -------------------------------------------------------------------
 AA5769  Click here for local accuracies and other accuracy information.
 AA5769
 AA5769.The horizontal coordinates were established by GPS observations
 AA5769.and adjusted by the National Geodetic Survey in June 2012.
 AA5769
 AA5769.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5769.been affixed to the stable North American tectonic plate. See 
 AA5769.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5769
 AA5769.The horizontal coordinates are valid at the epoch date displayed above
 AA5769.which is a decimal equivalence of Year/Month/Day.
 AA5769
 AA5769.The orthometric height was determined by GPS observations and a
 AA5769.high-resolution geoid model.
 AA5769
 AA5769.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5769.GEOID18 height accuracy estimate available here.
 AA5769
 AA5769.Click photographs - Photos may exist for this station.
 AA5769
 AA5769.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5769
 AA5769.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5769
 AA5769.The ellipsoidal height was determined by GPS observations
 AA5769.and is referenced to NAD 83.
 AA5769
 AA5769. The following values were computed from the NAD 83(2011) position.
 AA5769
 AA5769;                    North         East     Units Scale Factor Converg.
 AA5769;SPC MD       -   176,912.829   384,141.384   MT  0.99997231   -0 06 55.2
 AA5769;SPC MD       -   580,421.51  1,260,303.86   sFT  0.99997231   -0 06 55.2
 AA5769;UTM  18      - 4,347,929.649   311,590.793   MT  1.00003709   -1 22 56.6
 AA5769
 AA5769!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5769!SPC MD       -   0.99997455  x   0.99997231  =   0.99994686
 AA5769!UTM  18      -   0.99997455  x   1.00003709  =   1.00001164
 AA5769
 AA5769_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1159047929(NAD 83)
 AA5769
 AA5769                          SUPERSEDED SURVEY CONTROL
 AA5769
 AA5769  NAD 83(2007)-  39 15 36.87992(N)    077 11 01.49832(W) AD(2002.00) 0
 AA5769  ELLIP H (02/10/07)  162.242  (m)                       GP(2002.00)    
 AA5769  ELLIP H (08/30/02)  162.244  (m)                       GP(       ) 4 2
 AA5769  NAD 83(1991)-  39 15 36.88026(N)    077 11 01.49855(W) AD(       ) 1
 AA5769  ELLIP H (06/13/95)  162.192  (m)                       GP(       ) 4 2
 AA5769
 AA5769.Superseded values are not recommended for survey control.
 AA5769
 AA5769.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5769.See file dsdata.pdf to determine how the superseded data were derived.
 AA5769
 AA5769_MARKER: DD = SURVEY DISK
 AA5769_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5769_STAMPING: 20592
 AA5769_MARK LOGO: WSSC
 AA5769_PROJECTION: RECESSED 8 CENTIMETERS
 AA5769_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5769_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5769+STABILITY: SURFACE MOTION
 AA5769_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5769+SATELLITE: SATELLITE OBSERVATIONS - April 17, 2013
 AA5769
 AA5769  HISTORY     - Date     Condition        Report By
 AA5769  HISTORY     - 1994     MONUMENTED       MSI
 AA5769  HISTORY     - 20130417 GOOD             BASE9
 AA5769
 AA5769                          STATION DESCRIPTION
 AA5769
 AA5769'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5769'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5769'4.0 MI (6.4 KM) NORTHWEST OF THE TOWN OF LAYTONSVILLE.  TO REACH THE
 AA5769'STATION FROM THE INTERSECTION OF WOODFIELD ROAD (S.R. 124) AND MAIN
 AA5769'STREET (S.R. 108, ALSO DAMASCUS ROAD) IN THE VILLAGE OF DAMASCUS, GO
 AA5769'SOUTH 2.9 MI (4.7 KM) ALONG WOODFIELD ROAD TO THE INTERSECTION WITH
 AA5769'WOODFIELD SCHOOL ROAD ON THE LEFT.  TURN LEFT AND GO NORTHEAST 1.0 MI
 AA5769'(1.6 KM) ALONG WOODFIELD SCHOOL ROAD TO THE STATION ON THE LEFT.
 AA5769'
 AA5769'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5769'IS 3 INCHES BELOW GROUND LEVEL, AND STAMPED "T.S. 20592 MC".  THE DISK
 AA5769'IS LOCATED 4.95 M (16.24 FT) NORTHWEST OF THE CENTERLINE OF THE ROAD,
 AA5769'23.15 M (75.95 FT) WEST-SOUTHWEST OF THE MAILBOX, 34.85 M (114.34 FT)
 AA5769'NORTH-NORTHEAST OF MAILBOX NO. 24605, 13.35 M (43.80 FT) NORTH OF A
 AA5769'LIGHT POLE, AND 21.2 M (69.6 FT) NORTH-NORTHWEST OF THE ELECTRIC POWER
 AA5769'BOX NO. 3218.
 AA5769
 AA5769                          STATION RECOVERY (2013)
 AA5769
 AA5769'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 AA5769'MARK IS 1.57 M (5.2 FT) NORTHWEST OF THE EDGE OF THE PAVEMENT OF
 AA5769'WOODFIELD SCHOOL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5770 ***********************************************************************
 AA5770  DESIGNATION -  20593
 AA5770  PID         -  AA5770
 AA5770  STATE/COUNTY-  MD/MONTGOMERY
 AA5770  COUNTRY     -  US
 AA5770  USGS QUAD   -  POOLESVILLE (2016)
 AA5770
 AA5770                         *CURRENT SURVEY CONTROL
 AA5770  ______________________________________________________________________
 AA5770* NAD 83(2011) POSITION- 39 09 52.86649(N) 077 29 00.29861(W)   ADJUSTED
 AA5770* NAD 83(2011) ELLIP HT-    97.888 (meters)        (06/27/12)   ADJUSTED
 AA5770* NAD 83(2011) EPOCH   -  2010.00
 AA5770* NAVD 88 ORTHO HEIGHT -   130.2   (meters)      427.    (feet) GPS OBS
 AA5770  ______________________________________________________________________
 AA5770  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5770  GEOID HEIGHT    -         -32.71 (meters)                     GEOID93
 AA5770  GEOID HEIGHT    -        -32.353 (meters)                     GEOID18
 AA5770  NAD 83(2011) X  -  1,073,181.613 (meters)                     COMP
 AA5770  NAD 83(2011) Y  - -4,834,187.377 (meters)                     COMP
 AA5770  NAD 83(2011) Z  -  4,006,570.738 (meters)                     COMP
 AA5770  LAPLACE CORR    -          5.54  (seconds)                    DEFLEC18
 AA5770
 AA5770  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5770  Standards:
 AA5770         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5770            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5770  -------------------------------------------------------------------
 AA5770  NETWORK    3.48   4.39           1.53   1.30   2.24     -0.06997758
 AA5770  -------------------------------------------------------------------
 AA5770  Click here for local accuracies and other accuracy information.
 AA5770
 AA5770.The horizontal coordinates were established by GPS observations
 AA5770.and adjusted by the National Geodetic Survey in June 2012.
 AA5770
 AA5770.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5770.been affixed to the stable North American tectonic plate. See 
 AA5770.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5770
 AA5770.The horizontal coordinates are valid at the epoch date displayed above
 AA5770.which is a decimal equivalence of Year/Month/Day.
 AA5770
 AA5770.The orthometric height was determined by GPS observations and a
 AA5770.high-resolution geoid model.
 AA5770
 AA5770.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5770.GEOID18 height accuracy estimate available here.
 AA5770
 AA5770.Click photographs - Photos may exist for this station.
 AA5770
 AA5770.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5770
 AA5770.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5770
 AA5770.The ellipsoidal height was determined by GPS observations
 AA5770.and is referenced to NAD 83.
 AA5770
 AA5770. The following values were computed from the NAD 83(2011) position.
 AA5770
 AA5770;                    North         East     Units Scale Factor Converg.
 AA5770;SPC MD       -   166,398.891   358,222.396   MT  0.99996253   -0 18 12.3
 AA5770;SPC MD       -   545,927.03  1,175,267.98   sFT  0.99996253   -0 18 12.3
 AA5770;UTM  18      - 4,337,989.783   285,442.281   MT  1.00016686   -1 34 08.4
 AA5770
 AA5770!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5770!SPC MD       -   0.99998464  x   0.99996253  =   0.99994717
 AA5770!UTM  18      -   0.99998464  x   1.00016686  =   1.00015150
 AA5770
 AA5770_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8544237989(NAD 83)
 AA5770
 AA5770                          SUPERSEDED SURVEY CONTROL
 AA5770
 AA5770  NAD 83(2007)-  39 09 52.86661(N)    077 29 00.29918(W) AD(2002.00) 0
 AA5770  ELLIP H (02/10/07)   97.904  (m)                       GP(2002.00)    
 AA5770  ELLIP H (08/30/02)   97.891  (m)                       GP(       ) 4 2
 AA5770  NAD 83(1991)-  39 09 52.86691(N)    077 29 00.29913(W) AD(       ) 1
 AA5770  ELLIP H (06/13/95)   97.875  (m)                       GP(       ) 4 2
 AA5770
 AA5770.Superseded values are not recommended for survey control.
 AA5770
 AA5770.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5770.See file dsdata.pdf to determine how the superseded data were derived.
 AA5770
 AA5770_MARKER: DD = SURVEY DISK
 AA5770_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5770_STAMPING: T.S. 20593 MC
 AA5770_MARK LOGO: WSSC
 AA5770_PROJECTION: FLUSH
 AA5770_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5770_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5770+STABILITY: SURFACE MOTION
 AA5770_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5770+SATELLITE: SATELLITE OBSERVATIONS - June 17, 2019
 AA5770
 AA5770  HISTORY     - Date     Condition        Report By
 AA5770  HISTORY     - 1994     MONUMENTED       MSI
 AA5770  HISTORY     - 20030717 GOOD             GEOCAC
 AA5770  HISTORY     - 20190617 GOOD             NGS
 AA5770
 AA5770                          STATION DESCRIPTION
 AA5770
 AA5770'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5770'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5770'4.0 MI (6.4 KM) WEST OF THE TOWN OF POOLESVILLE.  TO REACH THE STATION
 AA5770'FROM THE INTERSECTION OF ELGIN ROAD (S.R. 109) AND FISHER AVENUE (S.R.
 AA5770'107) IN THE TOWN OF POOLESVILLE, GO WEST 3.8 MI (6.1 KM) ALONG FISHER
 AA5770'AVENUE WHICH BECOMES WHITES FERRY ROAD TO THE INTERSECTION WITH ELMER
 AA5770'SCHOOL ROAD ON THE LEFT.  CONTINUE STRAIGHT WEST 0.2 MI (0.3 KM) ALONG
 AA5770'WHITES FERRY ROAD TO THE STATION ON THE LEFT NEAR ENTRANCE TO
 AA5770'STABLES.
 AA5770'
 AA5770'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5770'IS FLUSH WITH GROUND LEVEL, AND STAMPED "T.S. 20593 MC".  THE DISK IS
 AA5770'LOCATED 6.8 M (22.3 FT) WEST OF POWER POLE NO. 22826, 2.4 M (7.9 FT)
 AA5770'NORTHEAST OF THE IRON FENCE CORNER, AND 8.3 M (27.2 FT) SOUTH OF THE
 AA5770'CENTERLINE OF THE ROAD.
 AA5770
 AA5770                          STATION RECOVERY (2003)
 AA5770
 AA5770'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 AA5770'POWER POLE MENTIONED IN 1994 DESCRIPTION IS NO. F 22826 (ADDING
 AA5770'PREFIX). STATION IS APPROXIMATELY 5 FEET NORTH OF A CARSONITE WITNESS
 AA5770'POST.
 AA5770
 AA5770                          STATION RECOVERY (2019)
 AA5770
 AA5770'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 AA5770'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5771 ***********************************************************************
 AA5771  DESIGNATION -  20594
 AA5771  PID         -  AA5771
 AA5771  STATE/COUNTY-  MD/MONTGOMERY
 AA5771  COUNTRY     -  US
 AA5771  USGS QUAD   -  GERMANTOWN (2016)
 AA5771
 AA5771                         *CURRENT SURVEY CONTROL
 AA5771  ______________________________________________________________________
 AA5771* NAD 83(2011) POSITION- 39 13 20.15454(N) 077 19 56.54634(W)   ADJUSTED
 AA5771* NAD 83(2011) ELLIP HT-   138.230 (meters)        (06/27/12)   ADJUSTED
 AA5771* NAD 83(2011) EPOCH   -  2010.00
 AA5771* NAVD 88 ORTHO HEIGHT -   170.3   (meters)      559.    (feet) GPS OBS
 AA5771  ______________________________________________________________________
 AA5771  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5771  GEOID HEIGHT    -         -32.38 (meters)                     GEOID93
 AA5771  GEOID HEIGHT    -        -32.018 (meters)                     GEOID18
 AA5771  NAD 83(2011) X  -  1,085,042.643 (meters)                     COMP
 AA5771  NAD 83(2011) Y  - -4,827,430.566 (meters)                     COMP
 AA5771  NAD 83(2011) Z  -  4,011,550.606 (meters)                     COMP
 AA5771  LAPLACE CORR    -          4.81  (seconds)                    DEFLEC18
 AA5771
 AA5771  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5771  Standards:
 AA5771         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5771            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5771  -------------------------------------------------------------------
 AA5771  NETWORK    2.70   3.65           1.19   1.00   1.86     -0.09599210
 AA5771  -------------------------------------------------------------------
 AA5771  Click here for local accuracies and other accuracy information.
 AA5771
 AA5771.The horizontal coordinates were established by GPS observations
 AA5771.and adjusted by the National Geodetic Survey in June 2012.
 AA5771
 AA5771.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5771.been affixed to the stable North American tectonic plate. See 
 AA5771.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5771
 AA5771.The horizontal coordinates are valid at the epoch date displayed above
 AA5771.which is a decimal equivalence of Year/Month/Day.
 AA5771
 AA5771.The orthometric height was determined by GPS observations and a
 AA5771.high-resolution geoid model.
 AA5771
 AA5771.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5771.GEOID18 height accuracy estimate available here.
 AA5771
 AA5771.Click photographs - Photos may exist for this station.
 AA5771
 AA5771.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5771
 AA5771.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5771
 AA5771.The ellipsoidal height was determined by GPS observations
 AA5771.and is referenced to NAD 83.
 AA5771
 AA5771. The following values were computed from the NAD 83(2011) position.
 AA5771
 AA5771;                    North         East     Units Scale Factor Converg.
 AA5771;SPC MD       -   172,732.787   371,298.914   MT  0.99996809   -0 12 31.0
 AA5771;SPC MD       -   566,707.49  1,218,169.85   sFT  0.99996809   -0 12 31.0
 AA5771;UTM  18      - 4,344,034.191   298,657.780   MT  1.00009917   -1 28 31.2
 AA5771
 AA5771!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5771!SPC MD       -   0.99997831  x   0.99996809  =   0.99994640
 AA5771!UTM  18      -   0.99997831  x   1.00009917  =   1.00007748
 AA5771
 AA5771_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9865744034(NAD 83)
 AA5771
 AA5771                          SUPERSEDED SURVEY CONTROL
 AA5771
 AA5771  NAD 83(2007)-  39 13 20.15468(N)    077 19 56.54656(W) AD(2002.00) 0
 AA5771  ELLIP H (02/10/07)  138.291  (m)                       GP(2002.00)    
 AA5771  ELLIP H (08/30/02)  138.285  (m)                       GP(       ) 4 2
 AA5771  NAD 83(1991)-  39 13 20.15552(N)    077 19 56.54681(W) AD(       ) 1
 AA5771  ELLIP H (06/13/95)  138.246  (m)                       GP(       ) 4 2
 AA5771
 AA5771.Superseded values are not recommended for survey control.
 AA5771
 AA5771.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5771.See file dsdata.pdf to determine how the superseded data were derived.
 AA5771
 AA5771_MARKER: DD = SURVEY DISK
 AA5771_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5771_STAMPING: T.S. 20594 MC
 AA5771_MARK LOGO: WSSC
 AA5771_PROJECTION: FLUSH
 AA5771_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5771_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5771+STABILITY: SURFACE MOTION
 AA5771_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5771+SATELLITE: SATELLITE OBSERVATIONS - November 21, 2019
 AA5771
 AA5771  HISTORY     - Date     Condition        Report By
 AA5771  HISTORY     - 1994     MONUMENTED       MSI
 AA5771  HISTORY     - 20191121 GOOD             NGS
 AA5771
 AA5771                          STATION DESCRIPTION
 AA5771
 AA5771'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5771'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5771'2.5 MI (4.0 KM) EAST OF THE TOWN OF BARNESVILLE.  TO REACH THE STATION
 AA5771'FROM THE INTERSECTION OF BARNESVILLE ROAD AND OLD HUNDRED NORTH (S.R.
 AA5771'109 NORTH) INTHE TOWN OF BARNESVILLE, GO EAST 3.3 MI (5.3 KM) ALONG
 AA5771'BARNESVILLE ROAD TO A FOUR-WAY JUNCTION.  TURN LEFT AND GO NORTH 1.8
 AA5771'MI (2.9 KM) ALONG SLIDELL ROAD TO THE INTERSECTION WITH WEST OLD
 AA5771'BALTIMORE ROAD.  CONTINUE NORTH 0.2 MI (0.3 KM) ALONG SLIDELL ROAD TO
 AA5771'THE STATION ON THE LEFT AT POWERLINE CROSSING.
 AA5771'
 AA5771'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5771'IS 3 INCHES BELOW GROUND LEVEL, AND STAMPED "T.S. 20594 MC".  THE DISK
 AA5771'IS LOCATED 4.6 M (15.1 FT) WEST OF THE CENTERLINE OF THE ROAD, 7.55 M
 AA5771'(24.77 FT) NORTH-NORTHWEST OF THE ROAD SIGN, AND 11.55 M (37.89 FT)
 AA5771'SOUTHWEST OF THE POWER POLE NO. 65A.
 AA5771
 AA5771                          STATION RECOVERY (2019)
 AA5771
 AA5771'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 AA5771'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5772 ***********************************************************************
 AA5772  DESIGNATION -  20595
 AA5772  PID         -  AA5772
 AA5772  STATE/COUNTY-  MD/MONTGOMERY
 AA5772  COUNTRY     -  US
 AA5772  USGS QUAD   -  URBANA (2016)
 AA5772
 AA5772                         *CURRENT SURVEY CONTROL
 AA5772  ______________________________________________________________________
 AA5772* NAD 83(2011) POSITION- 39 15 17.97740(N) 077 15 55.93449(W)   ADJUSTED
 AA5772* NAD 83(2011) ELLIP HT-   129.911 (meters)        (06/27/12)   ADJUSTED
 AA5772* NAD 83(2011) EPOCH   -  2010.00
 AA5772* NAVD 88 ORTHO HEIGHT -   161.9   (meters)      531.    (feet) GPS OBS
 AA5772  ______________________________________________________________________
 AA5772  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5772  GEOID HEIGHT    -         -32.28 (meters)                     GEOID93
 AA5772  GEOID HEIGHT    -        -31.923 (meters)                     GEOID18
 AA5772  NAD 83(2011) X  -  1,090,165.121 (meters)                     COMP
 AA5772  NAD 83(2011) Y  - -4,823,913.368 (meters)                     COMP
 AA5772  NAD 83(2011) Z  -  4,014,359.636 (meters)                     COMP
 AA5772  LAPLACE CORR    -          4.13  (seconds)                    DEFLEC18
 AA5772
 AA5772  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5772  Standards:
 AA5772         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5772            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5772  -------------------------------------------------------------------
 AA5772  NETWORK    3.10   4.00           1.34   1.18   2.04     -0.16452793
 AA5772  -------------------------------------------------------------------
 AA5772  Click here for local accuracies and other accuracy information.
 AA5772
 AA5772.The horizontal coordinates were established by GPS observations
 AA5772.and adjusted by the National Geodetic Survey in June 2012.
 AA5772
 AA5772.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5772.been affixed to the stable North American tectonic plate. See 
 AA5772.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5772
 AA5772.The horizontal coordinates are valid at the epoch date displayed above
 AA5772.which is a decimal equivalence of Year/Month/Day.
 AA5772
 AA5772.The orthometric height was determined by GPS observations and a
 AA5772.high-resolution geoid model.
 AA5772
 AA5772.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5772.GEOID18 height accuracy estimate available here.
 AA5772
 AA5772.Click photographs - Photos may exist for this station.
 AA5772
 AA5772.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5772
 AA5772.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5772
 AA5772.The ellipsoidal height was determined by GPS observations
 AA5772.and is referenced to NAD 83.
 AA5772
 AA5772. The following values were computed from the NAD 83(2011) position.
 AA5772
 AA5772;                    North         East     Units Scale Factor Converg.
 AA5772;SPC MD       -   176,347.289   377,080.926   MT  0.99997170   -0 09 60.0
 AA5772;SPC MD       -   578,566.06  1,237,139.67   sFT  0.99997170   -0 09 60.0
 AA5772;UTM  18      - 4,347,520.356   304,518.977   MT  1.00007053   -1 26 02.5
 AA5772
 AA5772!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5772!SPC MD       -   0.99997962  x   0.99997170  =   0.99995132
 AA5772!UTM  18      -   0.99997962  x   1.00007053  =   1.00005015
 AA5772
 AA5772_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0451847520(NAD 83)
 AA5772
 AA5772                          SUPERSEDED SURVEY CONTROL
 AA5772
 AA5772  NAD 83(2007)-  39 15 17.97761(N)    077 15 55.93515(W) AD(2002.00) 0
 AA5772  ELLIP H (02/10/07)  129.971  (m)                       GP(2002.00)    
 AA5772  ELLIP H (08/30/02)  129.985  (m)                       GP(       ) 4 2
 AA5772  NAD 83(1991)-  39 15 17.97834(N)    077 15 55.93532(W) AD(       ) 1
 AA5772  ELLIP H (06/13/95)  129.945  (m)                       GP(       ) 4 2
 AA5772
 AA5772.Superseded values are not recommended for survey control.
 AA5772
 AA5772.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5772.See file dsdata.pdf to determine how the superseded data were derived.
 AA5772
 AA5772_MARKER: DD = SURVEY DISK
 AA5772_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5772_STAMPING: T.S. 20595 MC
 AA5772_MARK LOGO: WSSC
 AA5772_PROJECTION: RECESSED 3 CENTIMETERS
 AA5772_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5772_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5772+STABILITY: SURFACE MOTION
 AA5772_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5772+SATELLITE: SATELLITE OBSERVATIONS - April 17, 2013
 AA5772
 AA5772  HISTORY     - Date     Condition        Report By
 AA5772  HISTORY     - 1994     MONUMENTED       MSI
 AA5772  HISTORY     - 20040324 GOOD             URS
 AA5772  HISTORY     - 20050405 GOOD             USPSQD
 AA5772  HISTORY     - 20060220 GOOD             GPSSS
 AA5772  HISTORY     - 20130417 GOOD             BASE9
 AA5772
 AA5772                          STATION DESCRIPTION
 AA5772
 AA5772'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5772'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5772'8.0 MI (12.9 KM) NORTH OF THE CITY OF GAITHERSBURG.  TO REACH THE
 AA5772'STATION FROM THE OVERPASS OF CLARKSBURG ROAD (S.R. 121) OVER I.S. 270
 AA5772'AT EXIT 18, GO NORTHEAST 1.3 MI (2.1 KM) ON CLARKSBURG ROAD TO A BEND
 AA5772'IN THE ROAD TO THE RIGHT (BURNT HILL ROAD) AND THE JUNCTION WITH
 AA5772'CLARKSBURG ROAD STRAIGHT AHEAD.  BEAR RIGHT AND GO EAST 0.1 MI (0.2
 AA5772'KM) ALONG BURNT HILL ROAD TO A BEND TO THE LEFT AND THE JUNCTION WITH
 AA5772'PIEDMONT ROAD STRAIGHT AHEAD.  BEAR LEFT AND CONTINUE 0.7 MI (1.1 KM)
 AA5772'ALONG BURNT HILL ROAD TO THE STATION ON THE LEFT CLOSE TO A POND.
 AA5772'
 AA5772'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5772'IS 1 INCH BELOW GROUND LEVEL, AND STAMPED "T.S. 20595 MC".  THE DISK
 AA5772'IS LOCATED 4.8 M (15.7 FT) NORTHWEST OF THE CENTERLINE OF THE ROAD,
 AA5772'1.8 M (5.9 FT) SOUTHEAST OF THE FENCELINE, 3.3 M (10.8 FT) SOUTHWEST
 AA5772'OF THE POWER POLE NO. 29, 16.8 M (55.1 FT) WEST-SOUTHWEST OF THE
 AA5772'SOUTHEAST EDGE OF PAVEMENT AT THE CENTERLINE OF DRIVEWAY TO HOUSE NO.
 AA5772'2430.
 AA5772
 AA5772                          STATION RECOVERY (2004)
 AA5772
 AA5772'RECOVERY NOTE BY URS COMPANY 2004
 AA5772'RECOVERED IN GOOD CONDITION.
 AA5772
 AA5772                          STATION RECOVERY (2005)
 AA5772
 AA5772'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 AA5772'RECOVERED IN GOOD CONDITION.
 AA5772
 AA5772                          STATION RECOVERY (2006)
 AA5772
 AA5772'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (BH)
 AA5772'RECOVERED BY CEI
 AA5772
 AA5772                          STATION RECOVERY (2013)
 AA5772
 AA5772'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 AA5772'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5773 ***********************************************************************
 AA5773  DESIGNATION -  20596
 AA5773  PID         -  AA5773
 AA5773  STATE/COUNTY-  MD/MONTGOMERY
 AA5773  COUNTRY     -  US
 AA5773  USGS QUAD   -  GAITHERSBURG (2016)
 AA5773
 AA5773                         *CURRENT SURVEY CONTROL
 AA5773  ______________________________________________________________________
 AA5773* NAD 83(2011) POSITION- 39 13 08.69946(N) 077 11 18.37588(W)   ADJUSTED
 AA5773* NAD 83(2011) ELLIP HT-   121.892 (meters)        (06/27/12)   ADJUSTED
 AA5773* NAD 83(2011) EPOCH   -  2010.00
 AA5773* NAVD 88 ORTHO HEIGHT -   153.7   (meters)      504.    (feet) GPS OBS
 AA5773  ______________________________________________________________________
 AA5773  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5773  GEOID HEIGHT    -         -32.15 (meters)                     GEOID93
 AA5773  GEOID HEIGHT    -        -31.790 (meters)                     GEOID18
 AA5773  NAD 83(2011) X  -  1,097,213.216 (meters)                     COMP
 AA5773  NAD 83(2011) Y  - -4,824,895.005 (meters)                     COMP
 AA5773  NAD 83(2011) Z  -  4,011,266.592 (meters)                     COMP
 AA5773  LAPLACE CORR    -          1.19  (seconds)                    DEFLEC18
 AA5773
 AA5773  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5773  Standards:
 AA5773         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5773            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5773  -------------------------------------------------------------------
 AA5773  NETWORK    3.13   3.90           1.36   1.19   1.99     -0.06978937
 AA5773  -------------------------------------------------------------------
 AA5773  Click here for local accuracies and other accuracy information.
 AA5773
 AA5773.The horizontal coordinates were established by GPS observations
 AA5773.and adjusted by the National Geodetic Survey in June 2012.
 AA5773
 AA5773.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5773.been affixed to the stable North American tectonic plate. See 
 AA5773.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5773
 AA5773.The horizontal coordinates are valid at the epoch date displayed above
 AA5773.which is a decimal equivalence of Year/Month/Day.
 AA5773
 AA5773.The orthometric height was determined by GPS observations and a
 AA5773.high-resolution geoid model.
 AA5773
 AA5773.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5773.GEOID18 height accuracy estimate available here.
 AA5773
 AA5773.Click photographs - Photos may exist for this station.
 AA5773
 AA5773.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5773
 AA5773.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5773
 AA5773.The ellipsoidal height was determined by GPS observations
 AA5773.and is referenced to NAD 83.
 AA5773
 AA5773. The following values were computed from the NAD 83(2011) position.
 AA5773
 AA5773;                    North         East     Units Scale Factor Converg.
 AA5773;SPC MD       -   172,344.083   383,727.311   MT  0.99996775   -0 07 05.8
 AA5773;SPC MD       -   565,432.21  1,258,945.35   sFT  0.99996775   -0 07 05.8
 AA5773;UTM  18      - 4,343,370.859   311,075.807   MT  1.00003949   -1 23 02.9
 AA5773
 AA5773!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5773!SPC MD       -   0.99998088  x   0.99996775  =   0.99994863
 AA5773!UTM  18      -   0.99998088  x   1.00003949  =   1.00002037
 AA5773
 AA5773_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1107543370(NAD 83)
 AA5773
 AA5773                          SUPERSEDED SURVEY CONTROL
 AA5773
 AA5773  NAD 83(2007)-  39 13 08.69967(N)    077 11 18.37680(W) AD(2002.00) 0
 AA5773  ELLIP H (02/10/07)  121.939  (m)                       GP(2002.00)    
 AA5773  ELLIP H (08/30/02)  121.945  (m)                       GP(       ) 4 2
 AA5773  NAD 83(1991)-  39 13 08.69990(N)    077 11 18.37694(W) AD(       ) 1
 AA5773  ELLIP H (06/13/95)  121.890  (m)                       GP(       ) 4 2
 AA5773
 AA5773.Superseded values are not recommended for survey control.
 AA5773
 AA5773.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5773.See file dsdata.pdf to determine how the superseded data were derived.
 AA5773
 AA5773_MARKER: DD = SURVEY DISK
 AA5773_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5773_STAMPING: T.S. 20596 MC
 AA5773_MARK LOGO: WSSC
 AA5773_PROJECTION: RECESSED 8 CENTIMETERS
 AA5773_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5773_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5773+STABILITY: SURFACE MOTION
 AA5773_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5773+SATELLITE: SATELLITE OBSERVATIONS - June 20, 2018
 AA5773
 AA5773  HISTORY     - Date     Condition        Report By
 AA5773  HISTORY     - 1994     MONUMENTED       MSI
 AA5773  HISTORY     - 20050105 GOOD             URS
 AA5773  HISTORY     - 20180620 GOOD             BASE9
 AA5773
 AA5773                          STATION DESCRIPTION
 AA5773
 AA5773'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5773'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5773'5.0 MI (8.0 KM) NORTH OF THE CITY OF GAITHERSBURG.  TO REACH THE
 AA5773'STATION FROM INTERSECTION OF MAIN STREET / LAYTONSVILLE ROAD (S.R.
 AA5773'108), AND BRINK ROAD / SUNDOWN ROAD IN THE TOWN OF LAYTONSVILLE, GO
 AA5773'WEST 1.5 MI (2.4 KM) ALONG BRINK ROAD TO THE INTERSECTION WITH
 AA5773'WOODFIELD ROAD. TURN RIGHT AND GO NORTH 1.3 MI (2.1 KM) ALONG
 AA5773'WOODFIELD ROAD (S.R. 124) TO THE INTERSECTION WITH GOSHEN SCHOOL ROAD
 AA5773'TO THE LEFT.  TURN LEFT AND GO WEST 0.8 MI (1.3 KM) ALONG GOSHEN
 AA5773'SCHOOL ROAD TO THE STATION ON THE RIGHT.
 AA5773'
 AA5773'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5773'IS 3 INCHES BELOW GROUND LEVEL, AND STAMPED "T.S. 20596 MC".  THE DISK
 AA5773'IS LOCATED 3.85 M (12.63 FT) WEST-NORTHWEST OF THE CENTERLINE OF THE
 AA5773'ROAD, 26.1 M (85.6 FT) NORTH OF THE MAILBOX NO. 22101, 44.5 M (146.0
 AA5773'FT) SOUTHWEST OF THE MAILBOX NO. 22130, AND 34.7 M (113.8 FT)
 AA5773'SOUTH-SOUTHWEST OF THE EDGE OF PAVEMENT AT THE CENTERLINE OF THE
 AA5773'DRIVEWAY TO HOUSE NO. 22130.
 AA5773
 AA5773                          STATION RECOVERY (2005)
 AA5773
 AA5773'RECOVERY NOTE BY URS COMPANY 2005 (JP)
 AA5773'RECOVERED IN GOOD CONDITION.
 AA5773
 AA5773                          STATION RECOVERY (2018)
 AA5773
 AA5773'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2018 (DRD)
 AA5773'THE MARK IS 12.98 M (42.6 FT) NORTHEAST OF MAILBOX NO. 22120 AND IS
 AA5773'STILL RECESSED 0.08 M (0.3 FT).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5774 ***********************************************************************
 AA5774  DESIGNATION -  20597
 AA5774  PID         -  AA5774
 AA5774  STATE/COUNTY-  MD/MONTGOMERY
 AA5774  COUNTRY     -  US
 AA5774  USGS QUAD   -  GERMANTOWN (2016)
 AA5774
 AA5774                         *CURRENT SURVEY CONTROL
 AA5774  ______________________________________________________________________
 AA5774* NAD 83(2011) POSITION- 39 10 35.01437(N) 077 20 22.05307(W)   ADJUSTED
 AA5774* NAD 83(2011) ELLIP HT-    96.706 (meters)        (06/27/12)   ADJUSTED
 AA5774* NAD 83(2011) EPOCH   -  2010.00
 AA5774* NAVD 88 ORTHO HEIGHT -   128.7   (meters)      422.    (feet) GPS OBS
 AA5774  ______________________________________________________________________
 AA5774  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5774  GEOID HEIGHT    -         -32.33 (meters)                     GEOID93
 AA5774  GEOID HEIGHT    -        -31.972 (meters)                     GEOID18
 AA5774  NAD 83(2011) X  -  1,085,144.089 (meters)                     COMP
 AA5774  NAD 83(2011) Y  - -4,830,673.800 (meters)                     COMP
 AA5774  NAD 83(2011) Z  -  4,007,577.686 (meters)                     COMP
 AA5774  LAPLACE CORR    -          4.33  (seconds)                    DEFLEC18
 AA5774
 AA5774  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5774  Standards:
 AA5774         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5774            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5774  -------------------------------------------------------------------
 AA5774  NETWORK    2.04   2.76           0.90   0.76   1.41      0.01031655
 AA5774  -------------------------------------------------------------------
 AA5774  Click here for local accuracies and other accuracy information.
 AA5774
 AA5774.The horizontal coordinates were established by GPS observations
 AA5774.and adjusted by the National Geodetic Survey in June 2012.
 AA5774
 AA5774.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5774.been affixed to the stable North American tectonic plate. See 
 AA5774.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5774
 AA5774.The horizontal coordinates are valid at the epoch date displayed above
 AA5774.which is a decimal equivalence of Year/Month/Day.
 AA5774
 AA5774.The orthometric height was determined by GPS observations and a
 AA5774.high-resolution geoid model.
 AA5774
 AA5774.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5774.GEOID18 height accuracy estimate available here.
 AA5774
 AA5774.Click photographs - Photos may exist for this station.
 AA5774
 AA5774.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5774
 AA5774.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5774
 AA5774.The ellipsoidal height was determined by GPS observations
 AA5774.and is referenced to NAD 83.
 AA5774
 AA5774. The following values were computed from the NAD 83(2011) position.
 AA5774
 AA5774;                    North         East     Units Scale Factor Converg.
 AA5774;SPC MD       -   167,642.541   370,668.160   MT  0.99996357   -0 12 47.0
 AA5774;SPC MD       -   550,007.24  1,216,100.45   sFT  0.99996357   -0 12 47.0
 AA5774;UTM  18      - 4,338,958.438   297,914.614   MT  1.00010287   -1 28 42.1
 AA5774
 AA5774!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5774!SPC MD       -   0.99998483  x   0.99996357  =   0.99994840
 AA5774!UTM  18      -   0.99998483  x   1.00010287  =   1.00008770
 AA5774
 AA5774_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9791438958(NAD 83)
 AA5774
 AA5774                          SUPERSEDED SURVEY CONTROL
 AA5774
 AA5774  NAD 83(2007)-  39 10 35.01463(N)    077 20 22.05329(W) AD(2002.00) 0
 AA5774  ELLIP H (02/10/07)   96.757  (m)                       GP(2002.00)    
 AA5774  ELLIP H (08/30/02)   96.744  (m)                       GP(       ) 4 2
 AA5774  NAD 83(1991)-  39 10 35.01455(N)    077 20 22.05314(W) AD(       ) 1
 AA5774  ELLIP H (06/13/95)   96.688  (m)                       GP(       ) 4 2
 AA5774
 AA5774.Superseded values are not recommended for survey control.
 AA5774
 AA5774.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5774.See file dsdata.pdf to determine how the superseded data were derived.
 AA5774
 AA5774_MARKER: DD = SURVEY DISK
 AA5774_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5774_STAMPING: T.S. 20597 MC
 AA5774_MARK LOGO: WSSC
 AA5774_PROJECTION: RECESSED 3 CENTIMETERS
 AA5774_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5774_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5774+STABILITY: SURFACE MOTION
 AA5774_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5774+SATELLITE: SATELLITE OBSERVATIONS - November 04, 2014
 AA5774
 AA5774  HISTORY     - Date     Condition        Report By
 AA5774  HISTORY     - 1994     MONUMENTED       MSI
 AA5774  HISTORY     - 20141104 GOOD             BASE9
 AA5774
 AA5774                          STATION DESCRIPTION
 AA5774
 AA5774'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5774'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5774'5.0 MI (8.0 KM) NORTHWEST OF THE TOWN OF POOLESVILLE.  TO REACH THE
 AA5774'STATION FROM JUNCTION OF DARNESTOWN ROAD (S.R. 28) AND BUCKLODGE ROAD
 AA5774'(S.R. 117), GO NORTH 3.3 MI (5.3 KM) ALONG BUCKLODGE ROAD TO A SHARP
 AA5774'RIGHT INTERSECTION WITH OLD BUCKLODGE LANE. TURN RIGHT AND GO SOUTH
 AA5774'1.05 MI (1.69 KM) ALONG OLD BUCKLODGE LANE TO THE STATION ON THE LEFT
 AA5774'RIGHT AFTER A SHARP 90 DEGREE BEND TO THE RIGHT.
 AA5774'
 AA5774'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5774'IS 1 INCH BELOW GROUND LEVEL, AND STAMPED "T.S. 20597 MC".  THE DISK
 AA5774'IS LOCATED 5.6 M (18.4 FT) SOUTH-SOUTHWEST OF THE CENTERLINE OF THE
 AA5774'ROAD, 1.85 M (6.07 FT) NORTH-NORTHEAST OF THE FENCELINE, 30.95 M
 AA5774'(101.54 FT) WEST OF POWER POLE NO. 25A, AND 31.6 M (103.7 FT)
 AA5774'EAST-SOUTHEAST OF POWER POLE NO. 22.
 AA5774
 AA5774                          STATION RECOVERY (2014)
 AA5774
 AA5774'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 AA5774'THE POWER POLE NO 25A DESCRIBED IN 1994 IS NOW RETAGGED AS 30A.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5775 ***********************************************************************
 AA5775  DESIGNATION -  20598
 AA5775  PID         -  AA5775
 AA5775  STATE/COUNTY-  MD/MONTGOMERY
 AA5775  COUNTRY     -  US
 AA5775  USGS QUAD   -  GAITHERSBURG (2016)
 AA5775
 AA5775                         *CURRENT SURVEY CONTROL
 AA5775  ______________________________________________________________________
 AA5775* NAD 83(2011) POSITION- 39 12 31.88858(N) 077 10 09.93839(W)   ADJUSTED
 AA5775* NAD 83(2011) ELLIP HT-   119.594 (meters)        (06/27/12)   ADJUSTED
 AA5775* NAD 83(2011) EPOCH   -  2010.00
 AA5775* NAVD 88 ORTHO HEIGHT -   151.4   (meters)      497.    (feet) GPS OBS
 AA5775  ______________________________________________________________________
 AA5775  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5775  GEOID HEIGHT    -         -32.13 (meters)                     GEOID93
 AA5775  GEOID HEIGHT    -        -31.772 (meters)                     GEOID18
 AA5775  NAD 83(2011) X  -  1,098,973.014 (meters)                     COMP
 AA5775  NAD 83(2011) Y  - -4,825,228.743 (meters)                     COMP
 AA5775  NAD 83(2011) Z  -  4,010,385.579 (meters)                     COMP
 AA5775  LAPLACE CORR    -          0.91  (seconds)                    DEFLEC18
 AA5775
 AA5775  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5775  Standards:
 AA5775         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5775            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5775  -------------------------------------------------------------------
 AA5775  NETWORK    2.71   3.84           1.18   1.03   1.96     -0.04022121
 AA5775  -------------------------------------------------------------------
 AA5775  Click here for local accuracies and other accuracy information.
 AA5775
 AA5775.The horizontal coordinates were established by GPS observations
 AA5775.and adjusted by the National Geodetic Survey in June 2012.
 AA5775
 AA5775.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5775.been affixed to the stable North American tectonic plate. See 
 AA5775.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5775
 AA5775.The horizontal coordinates are valid at the epoch date displayed above
 AA5775.which is a decimal equivalence of Year/Month/Day.
 AA5775
 AA5775.The orthometric height was determined by GPS observations and a
 AA5775.high-resolution geoid model.
 AA5775
 AA5775.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5775.GEOID18 height accuracy estimate available here.
 AA5775
 AA5775.Click photographs - Photos may exist for this station.
 AA5775
 AA5775.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5775
 AA5775.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5775
 AA5775.The ellipsoidal height was determined by GPS observations
 AA5775.and is referenced to NAD 83.
 AA5775
 AA5775. The following values were computed from the NAD 83(2011) position.
 AA5775
 AA5775;                    North         East     Units Scale Factor Converg.
 AA5775;SPC MD       -   171,205.702   385,366.862   MT  0.99996670   -0 06 22.8
 AA5775;SPC MD       -   561,697.37  1,264,324.45   sFT  0.99996670   -0 06 22.8
 AA5775;UTM  18      - 4,342,196.461   312,689.923   MT  1.00003201   -1 22 18.5
 AA5775
 AA5775!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5775!SPC MD       -   0.99998124  x   0.99996670  =   0.99994794
 AA5775!UTM  18      -   0.99998124  x   1.00003201  =   1.00001325
 AA5775
 AA5775_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1268942196(NAD 83)
 AA5775
 AA5775                          SUPERSEDED SURVEY CONTROL
 AA5775
 AA5775  NAD 83(2007)-  39 12 31.88885(N)    077 10 09.93941(W) AD(2002.00) 0
 AA5775  ELLIP H (02/10/07)  119.645  (m)                       GP(2002.00)    
 AA5775  ELLIP H (08/30/02)  119.650  (m)                       GP(       ) 4 2
 AA5775  NAD 83(1991)-  39 12 31.88892(N)    077 10 09.93933(W) AD(       ) 1
 AA5775  ELLIP H (06/13/95)  119.590  (m)                       GP(       ) 4 2
 AA5775
 AA5775.Superseded values are not recommended for survey control.
 AA5775
 AA5775.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5775.See file dsdata.pdf to determine how the superseded data were derived.
 AA5775
 AA5775_MARKER: DD = SURVEY DISK
 AA5775_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5775_STAMPING: T.S. 20598 MC
 AA5775_MARK LOGO: WSSC
 AA5775_PROJECTION: FLUSH
 AA5775_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5775_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5775+STABILITY: SURFACE MOTION
 AA5775_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5775+SATELLITE: SATELLITE OBSERVATIONS - September 11, 2013
 AA5775
 AA5775  HISTORY     - Date     Condition        Report By
 AA5775  HISTORY     - 1994     MONUMENTED       MSI
 AA5775  HISTORY     - 20050105 GOOD             URS
 AA5775  HISTORY     - 20130911 GOOD             BASE9
 AA5775
 AA5775                          STATION DESCRIPTION
 AA5775
 AA5775'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 AA5775'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5775'1.5 MI (2.4 KM) WEST OF THE TOWN OF LAYTONSVILLE.  TO REACH THE
 AA5775'STATION FROM THE INTERSECTION OF MAIN STREET / LAYTONSVILLE ROAD AND
 AA5775'BRINK ROAD / SUNDOWN ROAD IN LAYTONSVILLE, GO WEST 1.5 MI (2.4 KM)
 AA5775'ALONG BRINK ROAD TO THE STATION ON THE RIGHT AT THE INTERSECTION WITH
 AA5775'WOODFIELD ROAD (S.R. 124).
 AA5775'
 AA5775'THE STATION IS A WSSC DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH
 AA5775'IS FLUSH WITH GROUND LEVEL, AND STAMPED "T.S. 20598 MC".  THE DISK IS
 AA5775'LOCATED 19.4 M (63.6 FT) WEST OF THE FENCELINE, 7.1 M (23.3 FT) EAST
 AA5775'OF THE CENTERLINE OF WOODFIELD ROAD, 7.0 M (23.0 FT) SOUTH OF THE ROAD
 AA5775'SIGN, AND 37.8 M (124.0 FT) NORTH OF THE NORTHEAST TRAFFIC LIGHT POLE.
 AA5775
 AA5775                          STATION RECOVERY (2005)
 AA5775
 AA5775'RECOVERY NOTE BY URS COMPANY 2005 (JP)
 AA5775'RECOVERED IN GOOD CONDITION.
 AA5775
 AA5775                          STATION RECOVERY (2013)
 AA5775
 AA5775'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 AA5775'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2662 ***********************************************************************
 JV2662  DESIGNATION -  2062 WSSC
 JV2662  PID         -  JV2662
 JV2662  STATE/COUNTY-  MD/MONTGOMERY
 JV2662  COUNTRY     -  US
 JV2662  USGS QUAD   -  SANDY SPRING (2016)
 JV2662
 JV2662                         *CURRENT SURVEY CONTROL
 JV2662  ______________________________________________________________________
 JV2662* NAD 83(1986) POSITION- 39 11 02.     (N) 077 06 44.     (W)   SCALED
 JV2662* NAVD 88 ORTHO HEIGHT -   155.95  (+/-2cm)      511.6   (feet) VERTCON3
 JV2662  ______________________________________________________________________
 JV2662  GEOID HEIGHT    -        -31.769 (meters)                     GEOID18
 JV2662  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2662
 JV2662.The horizontal coordinates were scaled from a map and have
 JV2662.an estimated accuracy of +/- 6 seconds.
 JV2662
 JV2662.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2662.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2662
 JV2662.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2662.GEOID18 height accuracy estimate available here.
 JV2662
 JV2662.The vertical order pertains to the NGVD 29 superseded value.
 JV2662
 JV2662.Click photographs - Photos may exist for this station.
 JV2662
 JV2662;                    North         East    Units  Estimated Accuracy
 JV2662;SPC MD       -   168,430.      390,300.      MT  (+/- 180 meters Scaled)
 JV2662
 JV2662_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ175393(NAD 83)
 JV2662
 JV2662                          SUPERSEDED SURVEY CONTROL
 JV2662
 JV2662  NGVD 29 (11/26/84)  156.154  (m)          512.32   (f) ADJUSTED    2 0
 JV2662
 JV2662.Superseded values are not recommended for survey control.
 JV2662
 JV2662.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2662.See file dsdata.pdf to determine how the superseded data were derived.
 JV2662
 JV2662_MARKER: DD = SURVEY DISK
 JV2662_SETTING: 0 = UNSPECIFIED SETTING
 JV2662_SP_SET: IRON PIPE
 JV2662_STAMPING: 2062
 JV2662_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2662
 JV2662  HISTORY     - Date     Condition        Report By
 JV2662  HISTORY     - UNK      MONUMENTED       WSSC
 JV2662  HISTORY     - 1944     GOOD             WSSC
 JV2662
 JV2662                          STATION DESCRIPTION
 JV2662
 JV2662'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2662'2.5 MI SE FROM LAYONSVILLE.
 JV2662'ON STATE HIGHWAY 108, 1.0 MILE SOUTHEAST OF CLAYSVILLE, AT
 JV2662'THE JUNCTION OF THE REDLAND ROAD LEADING SOUTHWEST, 20.3 FEET
 JV2662'NORTHEAST OF THE CENTERLINE OF THE HIGHWAY, AND IN LINE WITH
 JV2662'A ROW OF POLES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1073 ***********************************************************************
 JV1073  DESIGNATION -  2063
 JV1073  PID         -  JV1073
 JV1073  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1073  COUNTRY     -  US
 JV1073  USGS QUAD   -  LAUREL (2016)
 JV1073
 JV1073                         *CURRENT SURVEY CONTROL
 JV1073  ______________________________________________________________________
 JV1073* NAD 83(1986) POSITION- 39 06 31.     (N) 076 51 14.     (W)   SCALED
 JV1073* NAVD 88 ORTHO HEIGHT -    58.67  (+/-2cm)      192.5   (feet) VERTCON3
 JV1073  ______________________________________________________________________
 JV1073  GEOID HEIGHT    -        -32.232 (meters)                     GEOID18
 JV1073  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1073
 JV1073.The horizontal coordinates were scaled from a map and have
 JV1073.an estimated accuracy of +/- 6 seconds.
 JV1073
 JV1073.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1073.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1073
 JV1073.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1073.GEOID18 height accuracy estimate available here.
 JV1073
 JV1073.The vertical order pertains to the NGVD 29 superseded value.
 JV1073
 JV1073.Click photographs - Photos may exist for this station.
 JV1073
 JV1073;                    North         East    Units  Estimated Accuracy
 JV1073;SPC MD       -   160,070.      412,640.      MT  (+/- 180 meters Scaled)
 JV1073
 JV1073_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ397304(NAD 83)
 JV1073
 JV1073                          SUPERSEDED SURVEY CONTROL
 JV1073
 JV1073  NGVD 29 (11/26/84)   58.895  (m)          193.22   (f) ADJUSTED    2 0
 JV1073
 JV1073.Superseded values are not recommended for survey control.
 JV1073
 JV1073.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1073.See file dsdata.pdf to determine how the superseded data were derived.
 JV1073
 JV1073_STAMPING: 2063
 JV1073
 JV1073  HISTORY     - Date     Condition        Report By
 JV1073  HISTORY     - UNK      MONUMENTED       WSSC
 JV1073  HISTORY     - 1939     GOOD             WSSC
 JV1073  HISTORY     - 20200803 MARK NOT FOUND   PROFLN
 JV1073
 JV1073                          STATION DESCRIPTION
 JV1073
 JV1073'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1073'AT LAUREL.
 JV1073'AT LAUREL, PRINCE GEORGES COUNTY, AT THE INTERSECTION OF MAIN
 JV1073'AND SEVENTH STREETS, 30.5 FEET NORTH OF THE CENTER LINE OF MAIN
 JV1073'STREET, 24 FEET WEST OF THE CENTER LINE OF SEVENTH STREET, 87.5
 JV1073'FEET NORTHWEST OF THE NORTHWEST CORNER OF AN APARTMENT HOUSE AT
 JV1073'THE SOUTHEAST CORNER OF THE INTERSECTION, 52.6 FEET NORTH OF THE
 JV1073'NORTH EDGE OF THE BRICK SIDEWALK ON THE SOUTH SIDE OF MAIN STREET,
 JV1073'AND 51.6 FEET NORTHEAST OF THE CENTER LINE OF THE BRICK SIDEWALK
 JV1073'ON THE NORTH SIDE OF MAIN STREET.  A WASHINGTON SUBURBAN SANITARY
 JV1073'DISTRICT STANDARD DISK, STAMPED 2063 AND SET IN THE TOP OF A
 JV1073'CONCRETE-FILLED IRON PIPE.
 JV1073
 JV1073                          STATION RECOVERY (2020)
 JV1073
 JV1073'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV1073'BELIEVED DESTROYED BY WIDENING OF SEVENTH ST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1074 ***********************************************************************
 JV1074  DESIGNATION -  2063 A
 JV1074  PID         -  JV1074
 JV1074  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1074  COUNTRY     -  US
 JV1074  USGS QUAD   -  LAUREL (2016)
 JV1074
 JV1074                         *CURRENT SURVEY CONTROL
 JV1074  ______________________________________________________________________
 JV1074* NAD 83(1986) POSITION- 39 06 39.9    (N) 076 51 26.9    (W)   HD_HELD2
 JV1074* NAVD 88 ORTHO HEIGHT -    46.659 (meters)      153.08  (feet) ADJUSTED
 JV1074  ______________________________________________________________________
 JV1074  GEOID HEIGHT    -        -32.222 (meters)                     GEOID18
 JV1074  DYNAMIC HEIGHT  -         46.634 (meters)      153.00  (feet) COMP
 JV1074  MODELED GRAVITY -    980,096.4   (mgal)                       NAVD 88
 JV1074
 JV1074  VERT ORDER      -  SECOND    CLASS 0
 JV1074
 JV1074.The horizontal coordinates were established by autonomous hand held GPS
 JV1074.observations and have an estimated accuracy of +/- 10 meters.
 JV1074
 JV1074.The orthometric height was determined by differential leveling and
 JV1074.adjusted by the NATIONAL GEODETIC SURVEY
 JV1074.in June 1991.
 JV1074
 JV1074.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1074.GEOID18 height accuracy estimate available here.
 JV1074
 JV1074.Click photographs - Photos may exist for this station.
 JV1074
 JV1074.The dynamic height is computed by dividing the NAVD 88
 JV1074.geopotential number by the normal gravity value computed on the
 JV1074.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1074.degrees latitude (g = 980.6199 gals.).
 JV1074
 JV1074.The modeled gravity was interpolated from observed gravity values.
 JV1074
 JV1074;                    North         East    Units  Estimated Accuracy
 JV1074;SPC MD       -   160,347.      412,327.      MT  (+/- 10 meters HH2 GPS)
 JV1074
 JV1074_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3940430746(NAD 83)
 JV1074
 JV1074                          SUPERSEDED SURVEY CONTROL
 JV1074
 JV1074  NGVD 29 (11/26/84)   46.872  (m)          153.78   (f) ADJUSTED    2 0
 JV1074
 JV1074.Superseded values are not recommended for survey control.
 JV1074
 JV1074.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1074.See file dsdata.pdf to determine how the superseded data were derived.
 JV1074
 JV1074_MARKER: Q = CHISELED SQUARE
 JV1074_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1074_SP_SET: BRIDGE
 JV1074_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1074
 JV1074  HISTORY     - Date     Condition        Report By
 JV1074  HISTORY     - UNK      MONUMENTED       WSSC
 JV1074  HISTORY     - 1939     GOOD             WSSC
 JV1074  HISTORY     - 1956     GOOD             CGS
 JV1074  HISTORY     - 20201028 GOOD             PROFLN
 JV1074
 JV1074                          STATION DESCRIPTION
 JV1074
 JV1074'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1074'AT LAUREL.
 JV1074'AT LAUREL, PRINCE GEORGES COUNTY, AT THE NORTH END OF TOWN, ON
 JV1074'THE LAUREL-FULTON ROAD, AT THE NORTH END OF THE WOODEN BRIDGE
 JV1074'OVER PATUXENT RIVER, AND ON THE WEST END OF THE STONE ABUTMENT.
 JV1074'A CHISELED SQUARE.
 JV1074
 JV1074                          STATION RECOVERY (1956)
 JV1074
 JV1074'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956
 JV1074'RECOVERED IN GOOD CONDITION.
 JV1074
 JV1074                          STATION RECOVERY (2020)
 JV1074
 JV1074'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV1074'TO REACH THE MARK, DRIVE TO THE L-INTERSECTION OF OLD SCAGGSVILLE ROAD
 JV1074'WITH PILGRIM ROAD AT N390643/W0765125.  FROM THERE, WALK SOUTHERLY
 JV1074'PAST A GATE ONTO HOWARD COUNTY PARK AND RECREATION LAND ABOUT 350 FT
 JV1074'(106.7 M) THROUGH WOODS TO THE MARK AT THE OLD BRIDGE ABUTMENT WHICH
 JV1074'STANDS WELL ABOVE THE DROP-OFF TO THE RIVER.  THE MARK IS RECOLLECTED
 JV1074'AS BEING ROUGHLY 50 FT (15.2 M) SOUTH OF A BARRICADE GUARD RAIL
 JV1074'BLOCKING THE OLD ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1075 ***********************************************************************
 JV1075  DESIGNATION -  2063 B WSSC
 JV1075  PID         -  JV1075
 JV1075  STATE/COUNTY-  MD/HOWARD
 JV1075  COUNTRY     -  US
 JV1075  USGS QUAD   -  LAUREL (2016)
 JV1075
 JV1075                         *CURRENT SURVEY CONTROL
 JV1075  ______________________________________________________________________
 JV1075* NAD 83(1986) POSITION- 39 06 57.     (N) 076 51 33.     (W)   SCALED
 JV1075* NAVD 88 ORTHO HEIGHT -    80.88  (+/-2cm)      265.4   (feet) VERTCON3
 JV1075  ______________________________________________________________________
 JV1075  GEOID HEIGHT    -        -32.214 (meters)                     GEOID18
 JV1075  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1075
 JV1075.The horizontal coordinates were scaled from a map and have
 JV1075.an estimated accuracy of +/- 6 seconds.
 JV1075
 JV1075.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1075.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1075
 JV1075.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1075.GEOID18 height accuracy estimate available here.
 JV1075
 JV1075.The vertical order pertains to the NGVD 29 superseded value.
 JV1075
 JV1075.Click photographs - Photos may exist for this station.
 JV1075
 JV1075;                    North         East    Units  Estimated Accuracy
 JV1075;SPC MD       -   160,870.      412,180.      MT  (+/- 180 meters Scaled)
 JV1075
 JV1075_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ392312(NAD 83)
 JV1075
 JV1075                          SUPERSEDED SURVEY CONTROL
 JV1075
 JV1075  NGVD 29 (11/26/84)   81.103  (m)          266.09   (f) ADJUSTED    2 0
 JV1075
 JV1075.Superseded values are not recommended for survey control.
 JV1075
 JV1075.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1075.See file dsdata.pdf to determine how the superseded data were derived.
 JV1075
 JV1075_MARKER: Q = CHISELED SQUARE
 JV1075_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1075_SP_SET: CULVERT
 JV1075_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1075
 JV1075  HISTORY     - Date     Condition        Report By
 JV1075  HISTORY     - UNK      MONUMENTED       WSSC
 JV1075  HISTORY     - 1939     GOOD             WSSC
 JV1075  HISTORY     - 1956     MARK NOT FOUND   CGS
 JV1075
 JV1075                          STATION DESCRIPTION
 JV1075
 JV1075'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1075'0.4 MI NW FROM LAUREL.
 JV1075'IN HOWARD COUNTY, 0.4 MILE NORTHWEST ALONG THE LAUREL-FULTON
 JV1075'ROAD FROM THE PATUXENT RIVER BRIDGE AT THE END OF MAIN STREET AT
 JV1075'LAUREL, PRINCE GEORGES COUNTY, NEAR A SPRING HOUSE, AT A CONCRETE
 JV1075'CULVERT UNDER THE ROAD, AND ON THE CENTER OF THE TOP OF THE SOUTH
 JV1075'HEAD WALL.  A CHISELED SQUARE.
 JV1075
 JV1075                          STATION RECOVERY (1956)
 JV1075
 JV1075'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956
 JV1075'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2623 ***********************************************************************
 JV2623  DESIGNATION -  2067 WSSC
 JV2623  PID         -  JV2623
 JV2623  STATE/COUNTY-  MD/MONTGOMERY
 JV2623  COUNTRY     -  US
 JV2623  USGS QUAD   -  KENSINGTON (2016)
 JV2623
 JV2623                         *CURRENT SURVEY CONTROL
 JV2623  ______________________________________________________________________
 JV2623* NAD 83(1986) POSITION- 39 05 35.     (N) 077 04 49.     (W)   SCALED
 JV2623* NAVD 88 ORTHO HEIGHT -   131.61  (+/-2cm)      431.8   (feet) VERTCON3
 JV2623  ______________________________________________________________________
 JV2623  GEOID HEIGHT    -        -31.817 (meters)                     GEOID18
 JV2623  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2623
 JV2623.The horizontal coordinates were scaled from a map and have
 JV2623.an estimated accuracy of +/- 6 seconds.
 JV2623
 JV2623.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2623.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2623
 JV2623.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2623.GEOID18 height accuracy estimate available here.
 JV2623
 JV2623.The vertical order pertains to the NGVD 29 superseded value.
 JV2623
 JV2623.Click photographs - Photos may exist for this station.
 JV2623
 JV2623;                    North         East    Units  Estimated Accuracy
 JV2623;SPC MD       -   158,340.      393,060.      MT  (+/- 180 meters Scaled)
 JV2623
 JV2623_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ200291(NAD 83)
 JV2623
 JV2623                          SUPERSEDED SURVEY CONTROL
 JV2623
 JV2623  NGVD 29 (11/26/84)  131.825  (m)          432.50   (f) ADJUSTED    2 0
 JV2623
 JV2623.Superseded values are not recommended for survey control.
 JV2623
 JV2623.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2623.See file dsdata.pdf to determine how the superseded data were derived.
 JV2623
 JV2623_MARKER: DD = SURVEY DISK
 JV2623_SETTING: 0 = UNSPECIFIED SETTING
 JV2623_SP_SET: IRON PIPE
 JV2623_STAMPING: 2067
 JV2623_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2623
 JV2623  HISTORY     - Date     Condition        Report By
 JV2623  HISTORY     - UNK      MONUMENTED       WSSC
 JV2623  HISTORY     - 1944     GOOD             WSSC
 JV2623  HISTORY     - 1985     MARK NOT FOUND   USPSQD
 JV2623
 JV2623                          STATION DESCRIPTION
 JV2623
 JV2623'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2623'1.2 MI S FROM NORBECK.
 JV2623'ON GEORGIA AVENUE (STATE HIGHWAY 97), AT A ROAD INTERSECTION
 JV2623'(THE ROAD LEADS EAST TO LAYHILL), IN THE NORTHWEST CORNER OF
 JV2623'THE INTERSECTION, 67 FEET SOUTH OF AN 8-INCH PERSIMMON TREE NEAR
 JV2623'THE MANOR CLUB SOUTH FENCE, 44 FEET WEST ACROSS THE HIGHWAY
 JV2623'FROM P.E.P. CO. POLE 75257, 20 FEET NORTHWEST OF THE CENTER OF
 JV2623'THE INTERSECTION, AND 10 FEET NORTH OF TELEPHONE POLE 125.
 JV2623
 JV2623                          STATION RECOVERY (1985)
 JV2623
 JV2623'RECOVERY NOTE BY US POWER SQUADRON 1985
 JV2623'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR4179 ***********************************************************************
 DR4179  DESIGNATION -  20697
 DR4179  PID         -  DR4179
 DR4179  STATE/COUNTY-  MD/PRINCE GEORGES
 DR4179  COUNTRY     -  US
 DR4179  USGS QUAD   -  ANACOSTIA (2016)
 DR4179
 DR4179                         *CURRENT SURVEY CONTROL
 DR4179  ______________________________________________________________________
 DR4179* NAD 83(1986) POSITION- 38 50 38.67   (N) 076 53 07.30   (W)   HD_HELD1
 DR4179* NAVD 88 ORTHO HEIGHT -    78.915 (meters)      258.91  (feet) ADJUSTED
 DR4179  ______________________________________________________________________
 DR4179  GEOID HEIGHT    -        -32.458 (meters)                     GEOID18
 DR4179  DYNAMIC HEIGHT  -         78.871 (meters)      258.76  (feet) COMP
 DR4179  MODELED GRAVITY -    980,070.9   (mgal)                       NAVD 88
 DR4179
 DR4179  VERT ORDER      -  FIRST     CLASS II
 DR4179
 DR4179.The horizontal coordinates were determined by differentially corrected
 DR4179.hand held GPS observations or other comparable positioning techniques
 DR4179.and have an estimated accuracy of +/- 3 meters.
 DR4179
 DR4179.The orthometric height was determined by differential leveling and
 DR4179.adjusted by the NATIONAL GEODETIC SURVEY
 DR4179.in August 2020.
 DR4179
 DR4179.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR4179.GEOID18 height accuracy estimate available here.
 DR4179
 DR4179.Click photographs - Photos may exist for this station.
 DR4179
 DR4179.The dynamic height is computed by dividing the NAVD 88
 DR4179.geopotential number by the normal gravity value computed on the
 DR4179.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR4179.degrees latitude (g = 980.6199 gals.).
 DR4179
 DR4179.The modeled gravity was interpolated from observed gravity values.
 DR4179
 DR4179;                    North         East    Units  Estimated Accuracy
 DR4179;SPC MD       -   130,703.5     409,952.0     MT  (+/- 3 meters HH1 GPS) 
 DR4179
 DR4179_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3637901162(NAD 83)
 DR4179
 DR4179                          SUPERSEDED SURVEY CONTROL
 DR4179
 DR4179.No superseded survey control is available for this station.
 DR4179
 DR4179_MARKER: DD = SURVEY DISK
 DR4179_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR4179_STAMPING: 5267 20697
 DR4179_MARK LOGO: WSSC
 DR4179_PROJECTION: RECESSED 6 CENTIMETERS
 DR4179_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR4179+STABILITY: SURFACE MOTION
 DR4179_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR4179+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 DR4179
 DR4179  HISTORY     - Date     Condition        Report By
 DR4179  HISTORY     - UNK      MONUMENTED       WSSC
 DR4179  HISTORY     - 20191028 GOOD             MDSHA
 DR4179
 DR4179                          STATION DESCRIPTION
 DR4179
 DR4179'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 DR4179'THE MARK IS LOCATED ABOUT 7.6 MI (12.2 KM) WEST-NORTHWEST OF UPPER
 DR4179'MARLBORO, 2.7 MI (4.3 KM) SOUTHEAST OF CORAL HILLS AND 1.0 MI (1.6 KM)
 DR4179'SOUTH-SOUTHEAST OF DISTRICT HEIGHTS.
 DR4179'
 DR4179'TO REACH FROM I-495 AND MD ROUTE 4, GO NORTHWEST ON MD ROUTE 4 FOR 1.0
 DR4179'MI (1.6 KM) TO THE MARK ON THE RIGHT, JUST PAST DONNELL DRIVE.
 DR4179'
 DR4179'IT IS 138.3 FT (42.2 M) WEST-NORTHWEST OF THE MEDIAN OF DONNELL ROAD,
 DR4179'105.2 FT (32.1 M) WEST OF POWER POLE NUMBER 832368-670100, 82.2 FT
 DR4179'(25.1 M) NORTH-NORTHEAST OF A METAL GUARD RAIL, 30.9 FT (9.4 M)
 DR4179'SOUTHEAST OF THE SOUTH END OF A TARGET SIGN, 26.4 FT (8.0 M)
 DR4179'EAST-NORTHEAST OF A STREET LIGHT POLE AND SET IN THE TOP OF A 10-IN
 DR4179'(25 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2663 ***********************************************************************
 JV2663  DESIGNATION -  2070 WSSC
 JV2663  PID         -  JV2663
 JV2663  STATE/COUNTY-  MD/MONTGOMERY
 JV2663  COUNTRY     -  US
 JV2663  USGS QUAD   -  SANDY SPRING (2016)
 JV2663
 JV2663                         *CURRENT SURVEY CONTROL
 JV2663  ______________________________________________________________________
 JV2663* NAD 83(1986) POSITION- 39 10 58.     (N) 077 06 39.     (W)   SCALED
 JV2663* NAVD 88 ORTHO HEIGHT -   156.41  (+/-2cm)      513.2   (feet) VERTCON3
 JV2663  ______________________________________________________________________
 JV2663  GEOID HEIGHT    -        -31.770 (meters)                     GEOID18
 JV2663  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2663
 JV2663.The horizontal coordinates were scaled from a map and have
 JV2663.an estimated accuracy of +/- 6 seconds.
 JV2663
 JV2663.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2663.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2663
 JV2663.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2663.GEOID18 height accuracy estimate available here.
 JV2663
 JV2663.The vertical order pertains to the NGVD 29 superseded value.
 JV2663
 JV2663.Click photographs - Photos may exist for this station.
 JV2663
 JV2663;                    North         East    Units  Estimated Accuracy
 JV2663;SPC MD       -   168,300.      390,420.      MT  (+/- 180 meters Scaled)
 JV2663
 JV2663_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ176391(NAD 83)
 JV2663
 JV2663                          SUPERSEDED SURVEY CONTROL
 JV2663
 JV2663  NGVD 29 (11/26/84)  156.616  (m)          513.83   (f) ADJUSTED    2 0
 JV2663
 JV2663.Superseded values are not recommended for survey control.
 JV2663
 JV2663.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2663.See file dsdata.pdf to determine how the superseded data were derived.
 JV2663
 JV2663_MARKER: DD = SURVEY DISK
 JV2663_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2663_SP_SET: BUILDING
 JV2663_STAMPING: 2070
 JV2663_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2663
 JV2663  HISTORY     - Date     Condition        Report By
 JV2663  HISTORY     - UNK      MONUMENTED       WSSC
 JV2663  HISTORY     - 1944     GOOD             WSSC
 JV2663
 JV2663                          STATION DESCRIPTION
 JV2663
 JV2663'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2663'1.2 MI SE FROM CLAYSVILLE.
 JV2663'ON STATE HIGHWAY 108, AT THE JUNCTION OF A ROAD LEADING EAST
 JV2663'TO MT. ZION AND BROOKEVILLE, 25 FEET WEST OF THE JUNCTION,
 JV2663'AND 28.5 FEET SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA8312 ***********************************************************************
 AA8312  DESIGNATION -  20700
 AA8312  PID         -  AA8312
 AA8312  STATE/COUNTY-  MD/MONTGOMERY
 AA8312  COUNTRY     -  US
 AA8312  USGS QUAD   -  FALLS CHURCH (2019)
 AA8312
 AA8312                         *CURRENT SURVEY CONTROL
 AA8312  ______________________________________________________________________
 AA8312* NAD 83(2011) POSITION- 38 59 48.61805(N) 077 13 49.39032(W)   ADJUSTED
 AA8312* NAD 83(2011) ELLIP HT-    82.220 (meters)        (06/27/12)   ADJUSTED
 AA8312* NAD 83(2011) EPOCH   -  2010.00
 AA8312* NAVD 88 ORTHO HEIGHT -   114.0   (meters)      374.    (feet) GPS OBS
 AA8312  ______________________________________________________________________
 AA8312  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA8312  GEOID HEIGHT    -        -32.111 (meters)                     GEOID93
 AA8312  GEOID HEIGHT    -        -31.724 (meters)                     GEOID18
 AA8312  NAD 83(2011) X  -  1,097,113.671 (meters)                     COMP
 AA8312  NAD 83(2011) Y  - -4,840,845.675 (meters)                     COMP
 AA8312  NAD 83(2011) Z  -  3,992,095.983 (meters)                     COMP
 AA8312  LAPLACE CORR    -         -0.50  (seconds)                    DEFLEC18
 AA8312
 AA8312  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA8312  Standards:
 AA8312         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA8312            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA8312  -------------------------------------------------------------------
 AA8312  NETWORK    1.50   3.29           0.66   0.56   1.68     -0.06343484
 AA8312  -------------------------------------------------------------------
 AA8312  Click here for local accuracies and other accuracy information.
 AA8312
 AA8312.The horizontal coordinates were established by GPS observations
 AA8312.and adjusted by the National Geodetic Survey in June 2012.
 AA8312
 AA8312.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA8312.been affixed to the stable North American tectonic plate. See 
 AA8312.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA8312
 AA8312.The horizontal coordinates are valid at the epoch date displayed above
 AA8312.which is a decimal equivalence of Year/Month/Day.
 AA8312
 AA8312.The orthometric height was determined by GPS observations and a
 AA8312.high-resolution geoid model.
 AA8312
 AA8312.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA8312.GEOID18 height accuracy estimate available here.
 AA8312
 AA8312.Click photographs - Photos may exist for this station.
 AA8312
 AA8312.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA8312
 AA8312.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA8312
 AA8312.The ellipsoidal height was determined by GPS observations
 AA8312.and is referenced to NAD 83.
 AA8312
 AA8312. The following values were computed from the NAD 83(2011) position.
 AA8312
 AA8312;                    North         East     Units Scale Factor Converg.
 AA8312;SPC MD       -   147,680.416   380,042.562   MT  0.99995207   -0 08 40.6
 AA8312;SPC MD       -   484,514.83  1,246,856.31   sFT  0.99995207   -0 08 40.6
 AA8312;UTM  18      - 4,318,792.145   306,848.095   MT  1.00005941   -1 24 14.3
 AA8312
 AA8312!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA8312!SPC MD       -   0.99998710  x   0.99995207  =   0.99993917
 AA8312!UTM  18      -   0.99998710  x   1.00005941  =   1.00004651
 AA8312
 AA8312_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0684818792(NAD 83)
 AA8312
 AA8312                          SUPERSEDED SURVEY CONTROL
 AA8312
 AA8312  NAD 83(2007)-  38 59 48.61831(N)    077 13 49.39132(W) AD(2002.00) 0
 AA8312  ELLIP H (02/10/07)   82.244  (m)                       GP(2002.00)    
 AA8312  ELLIP H (08/30/02)   82.284  (m)                       GP(       ) 4 2
 AA8312  NAD 83(1991)-  38 59 48.61806(N)    077 13 49.39162(W) AD(       ) 1
 AA8312  ELLIP H (09/29/95)   82.196  (m)                       GP(       ) 4 2
 AA8312
 AA8312.Superseded values are not recommended for survey control.
 AA8312
 AA8312.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA8312.See file dsdata.pdf to determine how the superseded data were derived.
 AA8312
 AA8312_MARKER: DD = SURVEY DISK
 AA8312_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA8312_STAMPING: 20700
 AA8312_MARK LOGO: WSSC
 AA8312_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AA8312_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA8312+STABILITY: SURFACE MOTION
 AA8312_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA8312+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AA8312
 AA8312  HISTORY     - Date     Condition        Report By
 AA8312  HISTORY     - 1995     MONUMENTED       MSI
 AA8312  HISTORY     - 20001106 GOOD             USPSQD
 AA8312  HISTORY     - 20020207 MARK NOT FOUND   URS
 AA8312
 AA8312                          STATION DESCRIPTION
 AA8312
 AA8312'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1995 (BAC)
 AA8312'TO REACH THE STATION FROM THE INTERSECTION OF I-495 AND CLARA BARTON
 AA8312'PKWY (EXIT-41), PROCEED WESTERLY ON CLARA BARTON PKWY FOR 1.5 MI (2.4
 AA8312'KM) TO THE INTERSECTION WITH MACARTHUR BOULEVARD. TURN LEFT AND
 AA8312'PROCEED WEST AND THEN NORTHERLY ON MACARTHUR BOULEVARD FOR 2.4 MI (3.9
 AA8312'KM) TO THE INTERSECTION WITH FALLS ROAD (STATE HWY 189) ON THE RIGHT.
 AA8312'TURN RIGHT AND PROCEED NE ON FALLS ROAD FOR 100M TO THE STATION ON THE
 AA8312'RIGHT.
 AA8312'
 AA8312'THE STATION IS LOCATED IN THE GRASS BETWEEN FALLS ROAD AND THE
 AA8312'SIDEWALK, 5.5 M (18.0 FT) SE OF CENTERLINE OF FALLS ROAD, 13.75 M
 AA8312'(45.11 FT) EAST OF POWER POLE NO. 734423-3774, 5.1 M (16.7 FT) NW OF
 AA8312'NW EDGE OF SIDEWALK, AND 20.9 M (68.6 FT) WEST OF POWER POLE NO.
 AA8312'734423-4674.
 AA8312
 AA8312                          STATION RECOVERY (2000)
 AA8312
 AA8312'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 AA8312'RECOVERED IN GOOD CONDITION.
 AA8312
 AA8312                          STATION RECOVERY (2002)
 AA8312
 AA8312'RECOVERY NOTE BY URS COMPANY 2002
 AA8312'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA8313 ***********************************************************************
 AA8313  DESIGNATION -  20701
 AA8313  PID         -  AA8313
 AA8313  STATE/COUNTY-  MD/MONTGOMERY
 AA8313  COUNTRY     -  US
 AA8313  USGS QUAD   -  FALLS CHURCH (2019)
 AA8313
 AA8313                         *CURRENT SURVEY CONTROL
 AA8313  ______________________________________________________________________
 AA8313* NAD 83(2011) POSITION- 38 58 25.48930(N) 077 10 42.32696(W)   ADJUSTED
 AA8313* NAD 83(2011) ELLIP HT-    12.886 (meters)        (06/27/12)   ADJUSTED
 AA8313* NAD 83(2011) EPOCH   -  2010.00
 AA8313* NAVD 88 ORTHO HEIGHT -    44.7   (meters)      147.    (feet) GPS OBS
 AA8313  ______________________________________________________________________
 AA8313  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA8313  GEOID HEIGHT    -        -32.162 (meters)                     GEOID93
 AA8313  GEOID HEIGHT    -        -31.794 (meters)                     GEOID18
 AA8313  NAD 83(2011) X  -  1,101,849.361 (meters)                     COMP
 AA8313  NAD 83(2011) Y  - -4,841,368.695 (meters)                     COMP
 AA8313  NAD 83(2011) Z  -  3,990,059.731 (meters)                     COMP
 AA8313  LAPLACE CORR    -         -2.08  (seconds)                    DEFLEC18
 AA8313
 AA8313  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA8313  Standards:
 AA8313         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA8313            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA8313  -------------------------------------------------------------------
 AA8313  NETWORK    1.50   2.94           0.67   0.54   1.50      0.06252474
 AA8313  -------------------------------------------------------------------
 AA8313  Click here for local accuracies and other accuracy information.
 AA8313
 AA8313.The horizontal coordinates were established by GPS observations
 AA8313.and adjusted by the National Geodetic Survey in June 2012.
 AA8313
 AA8313.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA8313.been affixed to the stable North American tectonic plate. See 
 AA8313.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA8313
 AA8313.The horizontal coordinates are valid at the epoch date displayed above
 AA8313.which is a decimal equivalence of Year/Month/Day.
 AA8313
 AA8313.The orthometric height was determined by GPS observations and a
 AA8313.high-resolution geoid model.
 AA8313
 AA8313.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA8313.GEOID18 height accuracy estimate available here.
 AA8313
 AA8313.Click photographs - Photos may exist for this station.
 AA8313
 AA8313.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA8313
 AA8313.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA8313
 AA8313.The ellipsoidal height was determined by GPS observations
 AA8313.and is referenced to NAD 83.
 AA8313
 AA8313. The following values were computed from the NAD 83(2011) position.
 AA8313
 AA8313;                    North         East     Units Scale Factor Converg.
 AA8313;SPC MD       -   145,106.978   384,538.810   MT  0.99995130   -0 06 43.1
 AA8313;SPC MD       -   476,071.81  1,261,607.75   sFT  0.99995130   -0 06 43.1
 AA8313;UTM  18      - 4,316,120.280   311,287.148   MT  1.00003853   -1 22 14.0
 AA8313
 AA8313!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA8313!SPC MD       -   0.99999798  x   0.99995130  =   0.99994928
 AA8313!UTM  18      -   0.99999798  x   1.00003853  =   1.00003651
 AA8313
 AA8313_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1128716120(NAD 83)
 AA8313
 AA8313                          SUPERSEDED SURVEY CONTROL
 AA8313
 AA8313  NAD 83(2007)-  38 58 25.48944(N)    077 10 42.32800(W) AD(2002.00) 0
 AA8313  ELLIP H (02/10/07)   12.909  (m)                       GP(2002.00)    
 AA8313  ELLIP H (08/30/02)   12.948  (m)                       GP(       ) 4 2
 AA8313  NAD 83(1991)-  38 58 25.48924(N)    077 10 42.32839(W) AD(       ) 1
 AA8313  ELLIP H (09/29/95)   12.879  (m)                       GP(       ) 4 2
 AA8313
 AA8313.Superseded values are not recommended for survey control.
 AA8313
 AA8313.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA8313.See file dsdata.pdf to determine how the superseded data were derived.
 AA8313
 AA8313_MARKER: DD = SURVEY DISK
 AA8313_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA8313_STAMPING: 20701
 AA8313_MARK LOGO: WSSC
 AA8313_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AA8313_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA8313+STABILITY: SURFACE MOTION
 AA8313_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA8313+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AA8313
 AA8313  HISTORY     - Date     Condition        Report By
 AA8313  HISTORY     - 1995     MONUMENTED       MSI
 AA8313  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 AA8313
 AA8313                          STATION DESCRIPTION
 AA8313
 AA8313'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1995 (BAC)
 AA8313'THE STATION IS LOCATED ON THE SOUTH SIDE OF THE INTERSECTION OF
 AA8313'NORTHBOND I-495 AND THE ON RAMP TO I-495 FROM EASTBOUND CLARA BARTON
 AA8313'PKWY, 5.85 M (19.19 FT) ESE OF EASTERN EDGE OF PAVEMENT OF I-495,
 AA8313'20.85 M (68.41 FT) NE OF LIGHT POST NO. 03-287-250, AND 6.75 M (22.15
 AA8313'FT) SW OF END OF CURB OF WESTERN EDGE OF ON RAMP TO I-495.
 AA8313
 AA8313                          STATION RECOVERY (2000)
 AA8313
 AA8313'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 AA8313'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA8314 ***********************************************************************
 AA8314  DESIGNATION -  20702
 AA8314  PID         -  AA8314
 AA8314  STATE/COUNTY-  MD/MONTGOMERY
 AA8314  COUNTRY     -  US
 AA8314  USGS QUAD   -  FALLS CHURCH (2019)
 AA8314
 AA8314                         *CURRENT SURVEY CONTROL
 AA8314  ______________________________________________________________________
 AA8314* NAD 83(2011) POSITION- 38 59 13.08382(N) 077 09 22.64894(W)   ADJUSTED
 AA8314* NAD 83(2011) ELLIP HT-    19.699 (meters)        (06/27/12)   ADJUSTED
 AA8314* NAD 83(2011) EPOCH   -  2010.00
 AA8314* NAVD 88 ORTHO HEIGHT -    51.5   (meters)      169.    (feet) GPS OBS
 AA8314  ______________________________________________________________________
 AA8314  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA8314  GEOID HEIGHT    -        -32.170 (meters)                     GEOID93
 AA8314  GEOID HEIGHT    -        -31.802 (meters)                     GEOID18
 AA8314  NAD 83(2011) X  -  1,103,515.394 (meters)                     COMP
 AA8314  NAD 83(2011) Y  - -4,840,047.701 (meters)                     COMP
 AA8314  NAD 83(2011) Z  -  3,991,204.952 (meters)                     COMP
 AA8314  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 AA8314
 AA8314  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA8314  Standards:
 AA8314         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA8314            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA8314  -------------------------------------------------------------------
 AA8314  NETWORK    1.58   3.29           0.70   0.58   1.68      0.03756867
 AA8314  -------------------------------------------------------------------
 AA8314  Click here for local accuracies and other accuracy information.
 AA8314
 AA8314.The horizontal coordinates were established by GPS observations
 AA8314.and adjusted by the National Geodetic Survey in June 2012.
 AA8314
 AA8314.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA8314.been affixed to the stable North American tectonic plate. See 
 AA8314.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA8314
 AA8314.The horizontal coordinates are valid at the epoch date displayed above
 AA8314.which is a decimal equivalence of Year/Month/Day.
 AA8314
 AA8314.The orthometric height was determined by GPS observations and a
 AA8314.high-resolution geoid model.
 AA8314
 AA8314.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA8314.GEOID18 height accuracy estimate available here.
 AA8314
 AA8314.Click photographs - Photos may exist for this station.
 AA8314
 AA8314.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA8314
 AA8314.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA8314
 AA8314.The ellipsoidal height was determined by GPS observations
 AA8314.and is referenced to NAD 83.
 AA8314
 AA8314. The following values were computed from the NAD 83(2011) position.
 AA8314
 AA8314;                    North         East     Units Scale Factor Converg.
 AA8314;SPC MD       -   146,571.087   386,459.218   MT  0.99995172   -0 05 53.1
 AA8314;SPC MD       -   480,875.31  1,267,908.28   sFT  0.99995172   -0 05 53.1
 AA8314;UTM  18      - 4,317,541.966   313,239.416   MT  1.00002951   -1 21 25.2
 AA8314
 AA8314!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA8314!SPC MD       -   0.99999691  x   0.99995172  =   0.99994863
 AA8314!UTM  18      -   0.99999691  x   1.00002951  =   1.00002642
 AA8314
 AA8314_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1323917541(NAD 83)
 AA8314
 AA8314                          SUPERSEDED SURVEY CONTROL
 AA8314
 AA8314  NAD 83(2007)-  38 59 13.08410(N)    077 09 22.65000(W) AD(2002.00) 0
 AA8314  ELLIP H (02/10/07)   19.721  (m)                       GP(2002.00)    
 AA8314  ELLIP H (08/30/02)   19.753  (m)                       GP(       ) 4 2
 AA8314  NAD 83(1991)-  38 59 13.08392(N)    077 09 22.65051(W) AD(       ) 1
 AA8314  ELLIP H (09/29/95)   19.676  (m)                       GP(       ) 4 2
 AA8314
 AA8314.Superseded values are not recommended for survey control.
 AA8314
 AA8314.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA8314.See file dsdata.pdf to determine how the superseded data were derived.
 AA8314
 AA8314_MARKER: DD = SURVEY DISK
 AA8314_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA8314_STAMPING: 20702
 AA8314_MARK LOGO: WSSC
 AA8314_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AA8314_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA8314+STABILITY: SURFACE MOTION
 AA8314_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA8314+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AA8314
 AA8314  HISTORY     - Date     Condition        Report By
 AA8314  HISTORY     - 1995     MONUMENTED       MSI
 AA8314
 AA8314                          STATION DESCRIPTION
 AA8314
 AA8314'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1995 (BAC)
 AA8314'TO REACH THE STATION FROM THE INTERSECTION OF I-495 AND CLARA BARTON
 AA8314'PKWY (EXIT-41), PROCEED NORTHERLY ON I-495 FOR 1.5 MI (2.4 KM) TO THE
 AA8314'EXIT FOR RIVER ROAD (EXIT-39). TAKE THE EXIT RAMP AND PROCEED
 AA8314'NORTHERLY ON THE RAMP FOR 0.2 MI (0.3 KM) TO THE INTERSECTION WITH THE
 AA8314'OFF RAMP FROM CABIN JOHN PKWY AND THE STATION ON THE LEFT.
 AA8314'
 AA8314'THE STATION IS LOCATED IN THE GRASS MEDIAN BETWEEN THE OFF RAMP FROM
 AA8314'CABIN JOHN PKWY AND THE OFF RAMP FROM I-495 (JUST BEFORE THEY MERGE),
 AA8314'3.85 M (12.63 FT) ENE FROM EAST EDGE OF OFF RAMP FROM CABIN JOHN PKWY,
 AA8314'10.03 M (32.91 FT) WEST FROM BACK OF CURB OF OFF RAMP FROM I-495, 11.1
 AA8314'M (36.4 FT) SOUTH OF LIGHT POLE NO. 98, AND 9.1 M (29.9 FT) NE OF
 AA8314''MERGING TRAFFIC' SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA8315 ***********************************************************************
 AA8315  DESIGNATION -  20703
 AA8315  PID         -  AA8315
 AA8315  STATE/COUNTY-  MD/MONTGOMERY
 AA8315  COUNTRY     -  US
 AA8315  USGS QUAD   -  WASHINGTON WEST (2016)
 AA8315
 AA8315                         *CURRENT SURVEY CONTROL
 AA8315  ______________________________________________________________________
 AA8315* NAD 83(2011) POSITION- 38 57 32.75599(N) 077 06 40.45993(W)   ADJUSTED
 AA8315* NAD 83(2011) ELLIP HT-    27.858 (meters)        (06/27/12)   ADJUSTED
 AA8315* NAD 83(2011) EPOCH   -  2010.00
 AA8315* NAVD 88 ORTHO HEIGHT -    59.8   (meters)      196.    (feet) GPS OBS
 AA8315  ______________________________________________________________________
 AA8315  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA8315  GEOID HEIGHT    -        -32.251 (meters)                     GEOID93
 AA8315  GEOID HEIGHT    -        -31.885 (meters)                     GEOID18
 AA8315  NAD 83(2011) X  -  1,107,756.318 (meters)                     COMP
 AA8315  NAD 83(2011) Y  - -4,841,081.554 (meters)                     COMP
 AA8315  NAD 83(2011) Z  -  3,988,804.778 (meters)                     COMP
 AA8315  LAPLACE CORR    -         -2.20  (seconds)                    DEFLEC18
 AA8315
 AA8315  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA8315  Standards:
 AA8315         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA8315            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA8315  -------------------------------------------------------------------
 AA8315  NETWORK    2.08   3.80           0.92   0.76   1.94      0.12594998
 AA8315  -------------------------------------------------------------------
 AA8315  Click here for local accuracies and other accuracy information.
 AA8315
 AA8315.The horizontal coordinates were established by GPS observations
 AA8315.and adjusted by the National Geodetic Survey in June 2012.
 AA8315
 AA8315.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA8315.been affixed to the stable North American tectonic plate. See 
 AA8315.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA8315
 AA8315.The horizontal coordinates are valid at the epoch date displayed above
 AA8315.which is a decimal equivalence of Year/Month/Day.
 AA8315
 AA8315.The orthometric height was determined by GPS observations and a
 AA8315.high-resolution geoid model.
 AA8315
 AA8315.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA8315.GEOID18 height accuracy estimate available here.
 AA8315
 AA8315.Click photographs - Photos may exist for this station.
 AA8315
 AA8315.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA8315
 AA8315.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA8315
 AA8315.The ellipsoidal height was determined by GPS observations
 AA8315.and is referenced to NAD 83.
 AA8315
 AA8315. The following values were computed from the NAD 83(2011) position.
 AA8315
 AA8315;                    North         East     Units Scale Factor Converg.
 AA8315;SPC MD       -   143,471.662   390,358.707   MT  0.99995090   -0 04 11.3
 AA8315;SPC MD       -   470,706.61  1,280,701.86   sFT  0.99995090   -0 04 11.3
 AA8315;UTM  18      - 4,314,357.424   317,070.159   MT  1.00001207   -1 19 40.2
 AA8315
 AA8315!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA8315!SPC MD       -   0.99999563  x   0.99995090  =   0.99994653
 AA8315!UTM  18      -   0.99999563  x   1.00001207  =   1.00000770
 AA8315
 AA8315_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1707014357(NAD 83)
 AA8315
 AA8315                          SUPERSEDED SURVEY CONTROL
 AA8315
 AA8315  NAD 83(2007)-  38 57 32.75613(N)    077 06 40.46078(W) AD(2002.00) 0
 AA8315  ELLIP H (02/10/07)   27.885  (m)                       GP(2002.00)    
 AA8315  ELLIP H (08/30/02)   27.913  (m)                       GP(       ) 4 2
 AA8315  NAD 83(1991)-  38 57 32.75601(N)    077 06 40.46118(W) AD(       ) 1
 AA8315  ELLIP H (09/29/95)   27.842  (m)                       GP(       ) 4 2
 AA8315
 AA8315.Superseded values are not recommended for survey control.
 AA8315
 AA8315.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA8315.See file dsdata.pdf to determine how the superseded data were derived.
 AA8315
 AA8315_MARKER: DD = SURVEY DISK
 AA8315_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA8315_STAMPING: 20703
 AA8315_MARK LOGO: WSSC
 AA8315_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AA8315_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA8315+STABILITY: SURFACE MOTION
 AA8315_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA8315+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2010
 AA8315
 AA8315  HISTORY     - Date     Condition        Report By
 AA8315  HISTORY     - 1995     MONUMENTED       MSI
 AA8315  HISTORY     - 20020824 GOOD             INDIV
 AA8315  HISTORY     - 20100615 GOOD             NGS
 AA8315
 AA8315                          STATION DESCRIPTION
 AA8315
 AA8315'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1995 (BAC)
 AA8315'TO REACH THE STATION FROM THE INTERSECTION OF I-495 AND RIVER ROAD
 AA8315'(EXIT-39), PROCEED EASTERLY ON RIVER ROAD FOR 3.5 MI (5.6 KM) TO THE
 AA8315'INTERSECTION WITH LITTLE FALLS PKWY. TURN RIGHT AND PROCEED SOUTHERLY
 AA8315'ON LITTLE FALLS PKWY FOR 0.6 MI (1.0 KM) TO THE INTERSECTION WITH
 AA8315'MASSACHUSETTS AVENUE. TURN RIGHT AND PROCEED WESTERLY ON MASSACHUSETTS
 AA8315'AVENUE FOR 0.2 MI (0.3 KM) TO THE ENTRANCE TO 'WESTLAND MIDDLE SCHOOL'
 AA8315'AND THE STATION IN THE NW QUADRANT OF THE INTERSECTION.
 AA8315'
 AA8315'THE STATION IS LOCATED 16.5 FT (5.0 M) NW OF CENTERLINE OF ENTRANCE TO
 AA8315'SCHOOL, 10.8 FT (3.3 M) EAST OF POWER POLE, AND 39.4 FT (12.0 M) WNW
 AA8315'OF 'SRC' MANHOLE ACCESS COVER.
 AA8315
 AA8315                          STATION RECOVERY (2002)
 AA8315
 AA8315'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (APC)
 AA8315'STATION AND WESTLAND MIDDLE SCHOOL ARE LOCATED AT 5511 MASSACHUSETTS
 AA8315'AVENUE, ACROSS STREET FROM PILGRIM LUTHERAN CHURCH. POWER POLE
 AA8315'MENTIONED IN 1995 DESCRIPTION IS PEPCO 768409-2891.
 AA8315
 AA8315                          STATION RECOVERY (2010)
 AA8315
 AA8315'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 AA8315'MARK IS 0.85 M (2.8 FT) WNW OF THE BACK OF THE CURB OF THE EXIT LANE
 AA8315'FROM WESTLAND MIDDLE SCHOOL AND IS RECESSED 0.08 M (0.3 FT) BELOW
 AA8315'GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AD9240 ***********************************************************************
 AD9240  DESIGNATION -  20726
 AD9240  PID         -  AD9240
 AD9240  STATE/COUNTY-  MD/MONTGOMERY
 AD9240  COUNTRY     -  US
 AD9240  USGS QUAD   -  SANDY SPRING (2016)
 AD9240
 AD9240                         *CURRENT SURVEY CONTROL
 AD9240  ______________________________________________________________________
 AD9240* NAD 83(2011) POSITION- 39 12 51.30028(N) 077 02 56.27960(W)   ADJUSTED
 AD9240* NAD 83(2011) ELLIP HT-   106.196 (meters)        (06/27/12)   ADJUSTED
 AD9240* NAD 83(2011) EPOCH   -  2010.00
 AD9240* NAVD 88 ORTHO HEIGHT -   138.1   (meters)      453.    (feet) GPS OBS
 AD9240  ______________________________________________________________________
 AD9240  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AD9240  GEOID HEIGHT    -        -31.841 (meters)                     GEOID96
 AD9240  GEOID HEIGHT    -        -31.846 (meters)                     GEOID18
 AD9240  NAD 83(2011) X  -  1,109,028.173 (meters)                     COMP
 AD9240  NAD 83(2011) Y  - -4,822,528.615 (meters)                     COMP
 AD9240  NAD 83(2011) Z  -  4,010,840.948 (meters)                     COMP
 AD9240  LAPLACE CORR    -         -2.77  (seconds)                    DEFLEC18
 AD9240
 AD9240  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AD9240  Standards:
 AD9240         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AD9240            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AD9240  -------------------------------------------------------------------
 AD9240  NETWORK    1.23   1.71           0.55   0.44   0.87      0.05489905
 AD9240  -------------------------------------------------------------------
 AD9240  Click here for local accuracies and other accuracy information.
 AD9240
 AD9240.The horizontal coordinates were established by GPS observations
 AD9240.and adjusted by the National Geodetic Survey in June 2012.
 AD9240
 AD9240.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AD9240.been affixed to the stable North American tectonic plate. See 
 AD9240.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AD9240
 AD9240.The horizontal coordinates are valid at the epoch date displayed above
 AD9240.which is a decimal equivalence of Year/Month/Day.
 AD9240
 AD9240.The orthometric height was determined by GPS observations and a
 AD9240.high-resolution geoid model.
 AD9240
 AD9240.Significant digits in the geoid height do not necessarily reflect accuracy.
 AD9240.GEOID18 height accuracy estimate available here.
 AD9240
 AD9240.Click photographs - Photos may exist for this station.
 AD9240
 AD9240.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AD9240
 AD9240.The Laplace correction was computed from DEFLEC18 derived deflections.
 AD9240
 AD9240.The ellipsoidal height was determined by GPS observations
 AD9240.and is referenced to NAD 83.
 AD9240
 AD9240. The following values were computed from the NAD 83(2011) position.
 AD9240
 AD9240;                    North         East     Units Scale Factor Converg.
 AD9240;SPC MD       -   171,791.870   395,771.164   MT  0.99996725   -0 01 50.6
 AD9240;SPC MD       -   563,620.49  1,298,459.23   sFT  0.99996725   -0 01 50.6
 AD9240;UTM  18      - 4,342,552.766   323,105.064   MT  0.99998530   -1 17 44.7
 AD9240
 AD9240!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AD9240!SPC MD       -   0.99998334  x   0.99996725  =   0.99995059
 AD9240!UTM  18      -   0.99998334  x   0.99998530  =   0.99996864
 AD9240
 AD9240_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2310542552(NAD 83)
 AD9240
 AD9240                          SUPERSEDED SURVEY CONTROL
 AD9240
 AD9240  NAD 83(2007)-  39 12 51.30024(N)    077 02 56.28066(W) AD(2002.00) 0
 AD9240  ELLIP H (02/10/07)  106.240  (m)                       GP(2002.00)    
 AD9240  ELLIP H (08/30/02)  106.243  (m)                       GP(       ) 4 2
 AD9240  NAD 83(1991)-  39 12 51.29995(N)    077 02 56.28050(W) AD(       ) 1
 AD9240  ELLIP H (07/06/97)  106.149  (m)                       GP(       ) 3 1
 AD9240
 AD9240.Superseded values are not recommended for survey control.
 AD9240
 AD9240.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AD9240.See file dsdata.pdf to determine how the superseded data were derived.
 AD9240
 AD9240_MARKER: DD = SURVEY DISK
 AD9240_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AD9240_STAMPING: T.S. 20726 M.C.
 AD9240_MARK LOGO: WSSC
 AD9240_PROJECTION: RECESSED 9 CENTIMETERS
 AD9240_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AD9240_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AD9240+STABILITY: SURFACE MOTION
 AD9240_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AD9240+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AD9240
 AD9240  HISTORY     - Date     Condition        Report By
 AD9240  HISTORY     - 1995     MONUMENTED       MSI
 AD9240  HISTORY     - 20141005 GOOD             BASE9
 AD9240
 AD9240                          STATION DESCRIPTION
 AD9240
 AD9240'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1995 (JC)
 AD9240'STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY 6 MI
 AD9240'(9.7 KM) EAST OF LAYTONSVILLE, 0.9 MI (1.4 KM) SE OF SUNSHINE, AND 2
 AD9240'MI (3.2 KM) NW OF BRIGHTON. TO REACH THE STATION FROM THE INTERSECTION
 AD9240'OF MD 97 AND MD 650 (NEW HAMPSHIRE AVE.), PROCEED EAST ON MD 650 FOR
 AD9240'0.7 MI (1.1 KM) TO RIDGECROFT ROAD AND STATION ON THE RIGHT.  TO REACH
 AD9240'THE STATION FROM THE INTERSECTION OF MD 108 AND MD 650, PROCEED NORTH
 AD9240'ON MD 650 FOR 5.5 MI (8.9 KM) TO RIDGECROFT ROAD AND THE STATION ON
 AD9240'THE LEFT. THE STATION IS LOCATED 13.45 M (44.13 FT) SOUTH OF MD 650
 AD9240'CENTERLINE, 11.05 M (36.25 FT) WEST OF RIDGECROFT ROAD CENTERLINE, 6.6
 AD9240'M (21.7 FT) NE OF FRONT FACE OF EAST -HUNTING RIDGE- SIGN, 4.6 M (15.1
 AD9240'FT) NW OF NW CORNER OF CONCRETE CATCH BASIN ON WEST SIDE OF RIDGECROFT
 AD9240'ROAD, AND 4.65 M (15.26 FT) NW OF -NO OUTLET- SIGN.
 AD9240
 AD9240                          STATION RECOVERY (2014)
 AD9240
 AD9240'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 AD9240'THE TREE CANOPY TO THE SOUTHWEST AND WEST MAY EFFECT GPS OBSERVATIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AD9241 ***********************************************************************
 AD9241  DESIGNATION -  20727
 AD9241  PID         -  AD9241
 AD9241  STATE/COUNTY-  MD/PRINCE GEORGES
 AD9241  COUNTRY     -  US
 AD9241  USGS QUAD   -  BELTSVILLE (2016)
 AD9241
 AD9241                         *CURRENT SURVEY CONTROL
 AD9241  ______________________________________________________________________
 AD9241* NAD 83(2011) POSITION- 39 07 13.08678(N) 076 53 48.37112(W)   ADJUSTED
 AD9241* NAD 83(2011) ELLIP HT-    89.445 (meters)        (06/27/12)   ADJUSTED
 AD9241* NAD 83(2011) EPOCH   -  2010.00
 AD9241* NAVD 88 ORTHO HEIGHT -   121.6   (meters)      399.    (feet) GPS OBS
 AD9241  ______________________________________________________________________
 AD9241  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AD9241  GEOID HEIGHT    -        -32.133 (meters)                     GEOID96
 AD9241  GEOID HEIGHT    -        -32.132 (meters)                     GEOID18
 AD9241  NAD 83(2011) X  -  1,123,324.992 (meters)                     COMP
 AD9241  NAD 83(2011) Y  - -4,825,969.037 (meters)                     COMP
 AD9241  NAD 83(2011) Z  -  4,002,743.807 (meters)                     COMP
 AD9241  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 AD9241
 AD9241  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AD9241  Standards:
 AD9241         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AD9241            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AD9241  -------------------------------------------------------------------
 AD9241  NETWORK    1.35   1.72           0.61   0.48   0.88      0.05154928
 AD9241  -------------------------------------------------------------------
 AD9241  Click here for local accuracies and other accuracy information.
 AD9241
 AD9241.The horizontal coordinates were established by GPS observations
 AD9241.and adjusted by the National Geodetic Survey in June 2012.
 AD9241
 AD9241.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AD9241.been affixed to the stable North American tectonic plate. See 
 AD9241.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AD9241
 AD9241.The horizontal coordinates are valid at the epoch date displayed above
 AD9241.which is a decimal equivalence of Year/Month/Day.
 AD9241
 AD9241.The orthometric height was determined by GPS observations and a
 AD9241.high-resolution geoid model.
 AD9241
 AD9241.Significant digits in the geoid height do not necessarily reflect accuracy.
 AD9241.GEOID18 height accuracy estimate available here.
 AD9241
 AD9241.Click photographs - Photos may exist for this station.
 AD9241
 AD9241.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AD9241
 AD9241.The Laplace correction was computed from DEFLEC18 derived deflections.
 AD9241
 AD9241.The ellipsoidal height was determined by GPS observations
 AD9241.and is referenced to NAD 83.
 AD9241
 AD9241. The following values were computed from the NAD 83(2011) position.
 AD9241
 AD9241;                    North         East     Units Scale Factor Converg.
 AD9241;SPC MD       -   161,366.167   408,926.933   MT  0.99995893   +0 03 53.2
 AD9241;SPC MD       -   529,415.50  1,341,621.11   sFT  0.99995893   +0 03 53.2
 AD9241;UTM  18      - 4,331,839.587   336,027.700   MT  0.99993107   -1 11 49.3
 AD9241
 AD9241!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AD9241!SPC MD       -   0.99998597  x   0.99995893  =   0.99994490
 AD9241!UTM  18      -   0.99998597  x   0.99993107  =   0.99991704
 AD9241
 AD9241_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3602731839(NAD 83)
 AD9241
 AD9241                          SUPERSEDED SURVEY CONTROL
 AD9241
 AD9241  NAD 83(2007)-  39 07 13.08675(N)    076 53 48.37223(W) AD(2002.00) 0
 AD9241  ELLIP H (02/10/07)   89.488  (m)                       GP(2002.00)    
 AD9241  ELLIP H (08/30/02)   89.488  (m)                       GP(       ) 4 2
 AD9241  NAD 83(1991)-  39 07 13.08665(N)    076 53 48.37195(W) AD(       ) 1
 AD9241  ELLIP H (07/06/97)   89.374  (m)                       GP(       ) 3 1
 AD9241
 AD9241.Superseded values are not recommended for survey control.
 AD9241
 AD9241.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AD9241.See file dsdata.pdf to determine how the superseded data were derived.
 AD9241
 AD9241_MARKER: DD = SURVEY DISK
 AD9241_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AD9241_STAMPING: T.S. 20727 M.C.
 AD9241_MARK LOGO: WSSC
 AD9241_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AD9241_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AD9241+STABILITY: SURFACE MOTION
 AD9241_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AD9241+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AD9241
 AD9241  HISTORY     - Date     Condition        Report By
 AD9241  HISTORY     - 1995     MONUMENTED       MSI
 AD9241
 AD9241                          STATION DESCRIPTION
 AD9241
 AD9241'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1995 (JC)
 AD9241'STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, IN
 AD9241'HILLSBOROUGH. TO REACH THE STATION FROM THE INTERSECTION OF I-95 AND
 AD9241'MD 198 (SANDY SPRING ROAD), PROCEED WEST ON MD 198 FOR 0.95 MI (1.53
 AD9241'KM) TO BOND MILL ROAD. TURN RIGHT, AND PROCEED NORTH ON BOND MILL ROAD
 AD9241'FOR 1.6 MI (2.6 KM) TO THE INTERSECTION WITH BROOKLYN BRIDGE ROAD.
 AD9241'TURN LEFT ON BROOKLYN BRIDGE ROAD, AND PROCEED WEST FOR 0.4 MI (0.6
 AD9241'KM) TO THE INTERSECTION WITH JULIE LANE. TURN RIGHT AND PROCEED NW ON
 AD9241'JULIE LANE FOR 0.1 MI (0.2 KM) TO THE STATION ON THE LEFT. THE STATION
 AD9241'IS LOCATED 31.5 FEET (9.6 M) SE OF POLE NUMBER 253337, 19.8 FEET (6.0
 AD9241'M) WEST OF JULIE LANE CENTERLINE, 160.7 FEET (49.0 M) WEST OF A TREE
 AD9241'ON THE EAST SIDE OF THE ROAD, AND 49.2 FEET (15.0 M) NORTH OF A TREE
 AD9241'ON THE WEST SIDE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AD9242 ***********************************************************************
 AD9242  DESIGNATION -  20728
 AD9242  PID         -  AD9242
 AD9242  STATE/COUNTY-  MD/MONTGOMERY
 AD9242  COUNTRY     -  US
 AD9242  USGS QUAD   -  BELTSVILLE (2016)
 AD9242
 AD9242                         *CURRENT SURVEY CONTROL
 AD9242  ______________________________________________________________________
 AD9242* NAD 83(2011) POSITION- 39 06 20.63264(N) 076 59 27.36209(W)   ADJUSTED
 AD9242* NAD 83(2011) ELLIP HT-   125.440 (meters)        (06/27/12)   ADJUSTED
 AD9242* NAD 83(2011) EPOCH   -  2010.00
 AD9242* NAVD 88 ORTHO HEIGHT -   157.4   (meters)      516.    (feet) GPS OBS
 AD9242  ______________________________________________________________________
 AD9242  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AD9242  GEOID HEIGHT    -        -31.964 (meters)                     GEOID96
 AD9242  GEOID HEIGHT    -        -31.970 (meters)                     GEOID18
 AD9242  NAD 83(2011) X  -  1,115,628.123 (meters)                     COMP
 AD9242  NAD 83(2011) Y  - -4,828,830.175 (meters)                     COMP
 AD9242  NAD 83(2011) Z  -  4,001,511.398 (meters)                     COMP
 AD9242  LAPLACE CORR    -         -3.12  (seconds)                    DEFLEC18
 AD9242
 AD9242  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AD9242  Standards:
 AD9242         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AD9242            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AD9242  -------------------------------------------------------------------
 AD9242  NETWORK    1.37   1.96           0.62   0.48   1.00      0.05493824
 AD9242  -------------------------------------------------------------------
 AD9242  Click here for local accuracies and other accuracy information.
 AD9242
 AD9242.The horizontal coordinates were established by GPS observations
 AD9242.and adjusted by the National Geodetic Survey in June 2012.
 AD9242
 AD9242.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AD9242.been affixed to the stable North American tectonic plate. See 
 AD9242.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AD9242
 AD9242.The horizontal coordinates are valid at the epoch date displayed above
 AD9242.which is a decimal equivalence of Year/Month/Day.
 AD9242
 AD9242.The orthometric height was determined by GPS observations and a
 AD9242.high-resolution geoid model.
 AD9242
 AD9242.Significant digits in the geoid height do not necessarily reflect accuracy.
 AD9242.GEOID18 height accuracy estimate available here.
 AD9242
 AD9242.Click photographs - Photos may exist for this station.
 AD9242
 AD9242.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AD9242
 AD9242.The Laplace correction was computed from DEFLEC18 derived deflections.
 AD9242
 AD9242.The ellipsoidal height was determined by GPS observations
 AD9242.and is referenced to NAD 83.
 AD9242
 AD9242. The following values were computed from the NAD 83(2011) position.
 AD9242
 AD9242;                    North         East     Units Scale Factor Converg.
 AD9242;SPC MD       -   159,743.632   400,784.159   MT  0.99995788   +0 00 20.5
 AD9242;SPC MD       -   524,092.23  1,314,906.03   sFT  0.99995788   +0 00 20.5
 AD9242;UTM  18      - 4,330,396.774   327,851.257   MT  0.99996491   -1 15 21.9
 AD9242
 AD9242!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AD9242!SPC MD       -   0.99998032  x   0.99995788  =   0.99993820
 AD9242!UTM  18      -   0.99998032  x   0.99996491  =   0.99994523
 AD9242
 AD9242_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2785130396(NAD 83)
 AD9242
 AD9242                          SUPERSEDED SURVEY CONTROL
 AD9242
 AD9242  NAD 83(2007)-  39 06 20.63262(N)    076 59 27.36305(W) AD(2002.00) 0
 AD9242  ELLIP H (02/10/07)  125.487  (m)                       GP(2002.00)    
 AD9242  ELLIP H (08/30/02)  125.492  (m)                       GP(       ) 4 2
 AD9242  NAD 83(1991)-  39 06 20.63227(N)    076 59 27.36290(W) AD(       ) 1
 AD9242  ELLIP H (07/06/97)  125.417  (m)                       GP(       ) 3 1
 AD9242
 AD9242.Superseded values are not recommended for survey control.
 AD9242
 AD9242.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AD9242.See file dsdata.pdf to determine how the superseded data were derived.
 AD9242
 AD9242_MARKER: DD = SURVEY DISK
 AD9242_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AD9242_STAMPING: T.S. 20728 M.C.
 AD9242_MARK LOGO: WSSC
 AD9242_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AD9242_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AD9242+STABILITY: SURFACE MOTION
 AD9242_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AD9242+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 AD9242
 AD9242  HISTORY     - Date     Condition        Report By
 AD9242  HISTORY     - 1995     MONUMENTED       MSI
 AD9242  HISTORY     - 20040103 GOOD             GEOCAC
 AD9242  HISTORY     - 20050405 GOOD             USPSQD
 AD9242
 AD9242                          STATION DESCRIPTION
 AD9242
 AD9242'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1995 (JC)
 AD9242'STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY 0.45
 AD9242'MI (0.72 KM) SE OF CLOVERLY. TO REACH THE STATION FROM THE
 AD9242'INTERSECTION OF I-495 AND MD 650 (NEW HAMPSHIRE AVE.), PROCEED NORTH
 AD9242'ON MD 650 FOR 1.9 MI (3.1 KM) TO THE INTERSECTION WITH US 29.
 AD9242'CONTINUE NORTH ON MD 650 FOR 4.8 MI (7.7 KM) TO THE INTERSECTION WITH
 AD9242'BRIGGS CHANEY ROAD.  TURN RIGHT AND PROCEED EAST ON BRIGGS CHANEY ROAD
 AD9242'FOR 0.4 MI (0.6 KM) TO THE STATION ON THE LEFT. THE STATION IS LOCATED
 AD9242'62.7 FEET (19.1 M) SE THE SOUTH END OF A WOODED FENCE WHICH IS ON THE
 AD9242'SE SIDE OF A GRAVEL DRIVEWAY, 67.4 FEET (20.5 M) SE OF A MAIL BOX,
 AD9242'25.9 FEET (7.9 M) NE OF BRIGGS CHANEY ROAD CENTERLINE, AND 118 FEET
 AD9242'(36.0 M) NW OF POLE NUMBER 802463-5827.
 AD9242
 AD9242                          STATION RECOVERY (2004)
 AD9242
 AD9242'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 AD9242'STATION DISK IS LOCATED AS DESCRIBED, APPROXIMATELY 54 FEET SOUTHEAST
 AD9242'OF A 'ROAD NARROWS' SIGN AND OPPOSITE A DRIVEWAY LEADING TO THE JAINE
 AD9242'CENTER AT STREET NUMBER 1021. THE DRIVEWAY AND MAILBOX MENTIONED IN
 AD9242'THE 1995 DESCRIPTION ARE FOR HOUSE NUMBER 1010.
 AD9242
 AD9242                          STATION RECOVERY (2005)
 AD9242
 AD9242'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 AD9242'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AD9243 ***********************************************************************
 AD9243  DESIGNATION -  20729
 AD9243  PID         -  AD9243
 AD9243  STATE/COUNTY-  MD/PRINCE GEORGES
 AD9243  COUNTRY     -  US
 AD9243  USGS QUAD   -  BELTSVILLE (2016)
 AD9243
 AD9243                         *CURRENT SURVEY CONTROL
 AD9243  ______________________________________________________________________
 AD9243* NAD 83(2011) POSITION- 39 01 35.08245(N) 076 57 56.03199(W)   ADJUSTED
 AD9243* NAD 83(2011) ELLIP HT-    49.806 (meters)        (06/27/12)   ADJUSTED
 AD9243* NAD 83(2011) EPOCH   -  2010.00
 AD9243* NAVD 88 ORTHO HEIGHT -    81.9   (meters)      269.    (feet) GPS OBS
 AD9243  ______________________________________________________________________
 AD9243  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AD9243  GEOID HEIGHT    -        -32.047 (meters)                     GEOID96
 AD9243  GEOID HEIGHT    -        -32.050 (meters)                     GEOID18
 AD9243  NAD 83(2011) X  -  1,119,004.527 (meters)                     COMP
 AD9243  NAD 83(2011) Y  - -4,833,685.153 (meters)                     COMP
 AD9243  NAD 83(2011) Z  -  3,994,626.648 (meters)                     COMP
 AD9243  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 AD9243
 AD9243  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AD9243  Standards:
 AD9243         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AD9243            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AD9243  -------------------------------------------------------------------
 AD9243  NETWORK    1.47   2.08           0.66   0.53   1.06      0.02592952
 AD9243  -------------------------------------------------------------------
 AD9243  Click here for local accuracies and other accuracy information.
 AD9243
 AD9243.The horizontal coordinates were established by GPS observations
 AD9243.and adjusted by the National Geodetic Survey in June 2012.
 AD9243
 AD9243.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AD9243.been affixed to the stable North American tectonic plate. See 
 AD9243.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AD9243
 AD9243.The horizontal coordinates are valid at the epoch date displayed above
 AD9243.which is a decimal equivalence of Year/Month/Day.
 AD9243
 AD9243.The orthometric height was determined by GPS observations and a
 AD9243.high-resolution geoid model.
 AD9243
 AD9243.Significant digits in the geoid height do not necessarily reflect accuracy.
 AD9243.GEOID18 height accuracy estimate available here.
 AD9243
 AD9243.Click photographs - Photos may exist for this station.
 AD9243
 AD9243.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AD9243
 AD9243.The Laplace correction was computed from DEFLEC18 derived deflections.
 AD9243
 AD9243.The ellipsoidal height was determined by GPS observations
 AD9243.and is referenced to NAD 83.
 AD9243
 AD9243. The following values were computed from the NAD 83(2011) position.
 AD9243
 AD9243;                    North         East     Units Scale Factor Converg.
 AD9243;SPC MD       -   150,938.756   402,981.780   MT  0.99995329   +0 01 17.8
 AD9243;SPC MD       -   495,204.90  1,322,116.06   sFT  0.99995329   +0 01 17.8
 AD9243;UTM  18      - 4,321,545.632   329,854.638   MT  0.99995648   -1 14 16.7
 AD9243
 AD9243!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AD9243!SPC MD       -   0.99999219  x   0.99995329  =   0.99994548
 AD9243!UTM  18      -   0.99999219  x   0.99995648  =   0.99994867
 AD9243
 AD9243_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2985421545(NAD 83)
 AD9243
 AD9243                          SUPERSEDED SURVEY CONTROL
 AD9243
 AD9243  NAD 83(2007)-  39 01 35.08244(N)    076 57 56.03296(W) AD(2002.00) 0
 AD9243  ELLIP H (02/10/07)   49.854  (m)                       GP(2002.00)    
 AD9243  ELLIP H (08/30/02)   49.858  (m)                       GP(       ) 4 2
 AD9243  NAD 83(1991)-  39 01 35.08219(N)    076 57 56.03304(W) AD(       ) 1
 AD9243  ELLIP H (07/06/97)   49.782  (m)                       GP(       ) 3 1
 AD9243
 AD9243.Superseded values are not recommended for survey control.
 AD9243
 AD9243.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AD9243.See file dsdata.pdf to determine how the superseded data were derived.
 AD9243
 AD9243_MARKER: DD = SURVEY DISK
 AD9243_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AD9243_STAMPING: T.S. 20729 M.C.
 AD9243_MARK LOGO: WSSC
 AD9243_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AD9243_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AD9243+STABILITY: SURFACE MOTION
 AD9243_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AD9243+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AD9243
 AD9243  HISTORY     - Date     Condition        Report By
 AD9243  HISTORY     - 1995     MONUMENTED       MSI
 AD9243
 AD9243                          STATION DESCRIPTION
 AD9243
 AD9243'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1995 (JC)
 AD9243'STATION IS LOCATED ON THE MONTGOMERY/PRINCE GEORGES COUNTY LINE,
 AD9243'MARYLAND, APPROXIMATELY 4.5 MI (7.2 KM) NE OF THE DISTRICT OF COLUMBIA
 AD9243'NE BOUNDARY IN HILLDALE FOREST. TO REACH THE STATION FROM THE
 AD9243'INTERSECTION OF I-495 AND MD 650 (NEW HAMPSHIRE AVE.), PROCEED NORTH
 AD9243'ON MD 650 FOR 0.2 MI (0.3 KM) TO THE INTERSECTION WITH POWDER MILL
 AD9243'ROAD.  TURN RIGHT AND PROCEED EAST ON POWDER MILL ROAD FOR 0.6 MI (1.0
 AD9243'KM) TO THE INTERSECTION WITH RIGGS ROAD. TURN LEFT AND CONTINUE ON
 AD9243'PWDER MILL ROAD FOR 150 FEET (45.7 M) TO THE STATION IN A MEDIAN IN
 AD9243'FRONT OF THE ENTRANCE TO THE NAVAL SURFACE WARFARE CENTER. THE STATION
 AD9243'IS LOCATED 31.5 FEET (9.6 M) FROM A CATCH BASIN, 68.6 FEET (20.9 M)
 AD9243'WSW FROM A SECOND CATCH BASIN, AND 54 FEET (16.5 M) NORTH OF POWDER
 AD9243'MILL ROAD CENTERLINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1456 ***********************************************************************
 JV1456  DESIGNATION -  2075 WSSC
 JV1456  PID         -  JV1456
 JV1456  STATE/COUNTY-  MD/MONTGOMERY
 JV1456  COUNTRY     -  US
 JV1456  USGS QUAD   -  BELTSVILLE (2016)
 JV1456
 JV1456                         *CURRENT SURVEY CONTROL
 JV1456  ______________________________________________________________________
 JV1456* NAD 83(1986) POSITION- 39 05 02.     (N) 076 57 05.     (W)   SCALED
 JV1456* NAVD 88 ORTHO HEIGHT -   138.63  (+/-2cm)      454.8   (feet) VERTCON3
 JV1456  ______________________________________________________________________
 JV1456  GEOID HEIGHT    -        -32.046 (meters)                     GEOID18
 JV1456  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1456
 JV1456.The horizontal coordinates were scaled from a map and have
 JV1456.an estimated accuracy of +/- 6 seconds.
 JV1456
 JV1456.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1456.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1456
 JV1456.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1456.GEOID18 height accuracy estimate available here.
 JV1456
 JV1456.The vertical order pertains to the NGVD 29 superseded value.
 JV1456
 JV1456.Click photographs - Photos may exist for this station.
 JV1456
 JV1456;                    North         East    Units  Estimated Accuracy
 JV1456;SPC MD       -   157,320.      404,210.      MT  (+/- 180 meters Scaled)
 JV1456
 JV1456_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ312278(NAD 83)
 JV1456
 JV1456                          SUPERSEDED SURVEY CONTROL
 JV1456
 JV1456  NGVD 29 (11/26/84)  138.835  (m)          455.49   (f) ADJUSTED    2 0
 JV1456
 JV1456.Superseded values are not recommended for survey control.
 JV1456
 JV1456.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1456.See file dsdata.pdf to determine how the superseded data were derived.
 JV1456
 JV1456_MARKER: DD = SURVEY DISK
 JV1456_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1456_STAMPING: 2075
 JV1456_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1456
 JV1456  HISTORY     - Date     Condition        Report By
 JV1456  HISTORY     - UNK      MONUMENTED       WSSC
 JV1456  HISTORY     - 1939     GOOD             WSSC
 JV1456
 JV1456                          STATION DESCRIPTION
 JV1456
 JV1456'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1456'0.6 MI N FROM FAIRLAND.
 JV1456'ON COLUMBIA ROAD, 150 FEET SOUTH OF THE JUNCTION OF A ROAD
 JV1456'LEADING EAST, ON THE EAST SIDE OF COLUMBIA ROAD, AND ACROSS THE
 JV1456'ROAD FROM A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR4176 ***********************************************************************
 DR4176  DESIGNATION -  20775
 DR4176  PID         -  DR4176
 DR4176  STATE/COUNTY-  MD/PRINCE GEORGES
 DR4176  COUNTRY     -  US
 DR4176  USGS QUAD   -  UPPER MARLBORO (2016)
 DR4176
 DR4176                         *CURRENT SURVEY CONTROL
 DR4176  ______________________________________________________________________
 DR4176* NAD 83(1986) POSITION- 38 49 05.52   (N) 076 50 25.53   (W)   HD_HELD1
 DR4176* NAVD 88 ORTHO HEIGHT -    70.270 (meters)      230.54  (feet) ADJUSTED
 DR4176  ______________________________________________________________________
 DR4176  GEOID HEIGHT    -        -32.629 (meters)                     GEOID18
 DR4176  DYNAMIC HEIGHT  -         70.231 (meters)      230.42  (feet) COMP
 DR4176  MODELED GRAVITY -    980,070.2   (mgal)                       NAVD 88
 DR4176
 DR4176  VERT ORDER      -  FIRST     CLASS II
 DR4176
 DR4176.The horizontal coordinates were determined by differentially corrected
 DR4176.hand held GPS observations or other comparable positioning techniques
 DR4176.and have an estimated accuracy of +/- 3 meters.
 DR4176
 DR4176.The orthometric height was determined by differential leveling and
 DR4176.adjusted by the NATIONAL GEODETIC SURVEY
 DR4176.in August 2020.
 DR4176
 DR4176.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR4176.GEOID18 height accuracy estimate available here.
 DR4176
 DR4176.Click photographs - Photos may exist for this station.
 DR4176
 DR4176.The dynamic height is computed by dividing the NAVD 88
 DR4176.geopotential number by the normal gravity value computed on the
 DR4176.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR4176.degrees latitude (g = 980.6199 gals.).
 DR4176
 DR4176.The modeled gravity was interpolated from observed gravity values.
 DR4176
 DR4176;                    North         East    Units  Estimated Accuracy
 DR4176;SPC MD       -   127,837.0     413,858.0     MT  (+/- 3 meters HH1 GPS) 
 DR4176
 DR4176_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4022198211(NAD 83)
 DR4176
 DR4176                          SUPERSEDED SURVEY CONTROL
 DR4176
 DR4176.No superseded survey control is available for this station.
 DR4176
 DR4176_MARKER: DD = SURVEY DISK
 DR4176_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR4176_STAMPING: 5259 20775
 DR4176_MARK LOGO: WSSC
 DR4176_PROJECTION: RECESSED 12 CENTIMETERS
 DR4176_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR4176+STABILITY: SURFACE MOTION
 DR4176_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR4176+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 DR4176
 DR4176  HISTORY     - Date     Condition        Report By
 DR4176  HISTORY     - UNK      MONUMENTED       WSSC
 DR4176  HISTORY     - 20191028 GOOD             MDSHA
 DR4176
 DR4176                          STATION DESCRIPTION
 DR4176
 DR4176'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 DR4176'THE MARK IS LOCATED ABOUT 9.5 MI (15.3 KM) WEST OF BRISTOL, 8.4 MI
 DR4176'(13.5 KM) NORTH OF BRANDYWINE AND 4.9 MI (7.9 KM) WEST OF UPPER
 DR4176'MARLBORO.
 DR4176'
 DR4176'TO REACH FROM I-495 AND MD ROUTE 4, GO SOUTHEAST ON MD ROUTE 4 FOR 2.2
 DR4176'MI (3.5 KM) TO THE MARK ON THE LEFT IN THE MEDIAN.
 DR4176'
 DR4176'IT IS 109.9 FT (33.5 M) SOUTH-SOUTHEAST OF THE NORTHWEST END OF A
 DR4176'GUARD RAIL ON THE NORTHBOUND ROADWAY, 90.1 FT (27.5 M) NORTHEAST OF
 DR4176'THE CENTERLINE OF MD ROUTE 4 SOUTHBOUND ROADWAY, 43.5 FT (13.3 M)
 DR4176'SOUTHWEST OF THE CENTERLINE OF MD ROUTE 4 NORTHBOUND ROADWAY AND SET
 DR4176'IN THE TOP OF A 10-IN (25 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR4175 ***********************************************************************
 DR4175  DESIGNATION -  20776
 DR4175  PID         -  DR4175
 DR4175  STATE/COUNTY-  MD/PRINCE GEORGES
 DR4175  COUNTRY     -  US
 DR4175  USGS QUAD   -  UPPER MARLBORO (2016)
 DR4175
 DR4175                         *CURRENT SURVEY CONTROL
 DR4175  ______________________________________________________________________
 DR4175* NAD 83(1986) POSITION- 38 48 58.26   (N) 076 49 55.57   (W)   HD_HELD1
 DR4175* NAVD 88 ORTHO HEIGHT -    64.181 (meters)      210.57  (feet) ADJUSTED
 DR4175  ______________________________________________________________________
 DR4175  GEOID HEIGHT    -        -32.659 (meters)                     GEOID18
 DR4175  DYNAMIC HEIGHT  -         64.145 (meters)      210.45  (feet) COMP
 DR4175  MODELED GRAVITY -    980,070.2   (mgal)                       NAVD 88
 DR4175
 DR4175  VERT ORDER      -  FIRST     CLASS II
 DR4175
 DR4175.The horizontal coordinates were determined by differentially corrected
 DR4175.hand held GPS observations or other comparable positioning techniques
 DR4175.and have an estimated accuracy of +/- 3 meters.
 DR4175
 DR4175.The orthometric height was determined by differential leveling and
 DR4175.adjusted by the NATIONAL GEODETIC SURVEY
 DR4175.in August 2020.
 DR4175
 DR4175.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR4175.GEOID18 height accuracy estimate available here.
 DR4175
 DR4175.Click photographs - Photos may exist for this station.
 DR4175
 DR4175.The dynamic height is computed by dividing the NAVD 88
 DR4175.geopotential number by the normal gravity value computed on the
 DR4175.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR4175.degrees latitude (g = 980.6199 gals.).
 DR4175
 DR4175.The modeled gravity was interpolated from observed gravity values.
 DR4175
 DR4175;                    North         East    Units  Estimated Accuracy
 DR4175;SPC MD       -   127,614.5     414,581.2     MT  (+/- 3 meters HH1 GPS) 
 DR4175
 DR4175_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4093997972(NAD 83)
 DR4175
 DR4175                          SUPERSEDED SURVEY CONTROL
 DR4175
 DR4175.No superseded survey control is available for this station.
 DR4175
 DR4175_MARKER: DD = SURVEY DISK
 DR4175_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR4175_STAMPING: 5258 20776
 DR4175_MARK LOGO: WSSC
 DR4175_PROJECTION: RECESSED 10 CENTIMETERS
 DR4175_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR4175+STABILITY: SURFACE MOTION
 DR4175_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR4175+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 DR4175
 DR4175  HISTORY     - Date     Condition        Report By
 DR4175  HISTORY     - UNK      MONUMENTED       WSSC
 DR4175  HISTORY     - 20191028 GOOD             MDSHA
 DR4175
 DR4175                          STATION DESCRIPTION
 DR4175
 DR4175'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 DR4175'THE MARK IS LOCATED ABOUT 6.1 MI (9.8 KM) SOUTHEAST OF CORAL HILLS,
 DR4175'4.4 MI (7.1 KM) WEST OF UPPER MARLBORO AND 4.2 MI (6.8 KM) SOUTHEAST
 DR4175'OF DISTRICT HEIGHTS.
 DR4175'
 DR4175'TO REACH FROM I-495 AND MD ROUTE 4, GO SOUTHEAST ON MD ROUTE 4 FOR 2.6
 DR4175'MI (4.2 KM) TO THE MARK ON THE LEFT IN THE MEDIAN.
 DR4175'
 DR4175'IT IS 234.3 FT (71.4 M) SOUTHEAST OF THE SOUTHEAST END OF A METAL
 DR4175'GUARD RAIL ON THE NORTH SIDE OF THE NORTHBOUND ROADWAY, 123.0 FT (37.5
 DR4175'M) NORTHEAST OF THE SOUTHEAST END OF A METAL GUARD RAIL ON MD ROUTE 4
 DR4175'SOUTHBOUND ROADWAY, 91.2 FT (27.8 M) NORTH-NORTHEAST OF THE CENTERLINE
 DR4175'OF THE SOUTHBOUND ROADWAY, 45.0 FT (13.7 M) WEST-NORTHWEST OF A
 DR4175'DRAINAGE INLET, 41.9 FT (12.8 M) SOUTH-SOUTHWEST OF THE CENTERLINE OF
 DR4175'THE NORTHBOUND ROADWAY AND SET IN THE TOP OF A 10-IN (25 CM) ROUND
 DR4175'CONCRETE POST AND ABOUT 3 FT (0.9 M) LOWER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2570 ***********************************************************************
 JV2570  DESIGNATION -  2079 WSSC
 JV2570  PID         -  JV2570
 JV2570  STATE/COUNTY-  MD/HOWARD
 JV2570  COUNTRY     -  US
 JV2570  USGS QUAD   -  WOODBINE (2016)
 JV2570
 JV2570                         *CURRENT SURVEY CONTROL
 JV2570  ______________________________________________________________________
 JV2570* NAD 83(1986) POSITION- 39 16 03.1    (N) 077 01 03.1    (W)   HD_HELD2
 JV2570* NAVD 88 ORTHO HEIGHT -   148.90  (+/-2cm)      488.5   (feet) VERTCON3
 JV2570  ______________________________________________________________________
 JV2570  GEOID HEIGHT    -        -31.879 (meters)                     GEOID18
 JV2570  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2570
 JV2570.The horizontal coordinates were established by autonomous hand held GPS
 JV2570.observations and have an estimated accuracy of +/- 10 meters.
 JV2570
 JV2570.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2570.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2570
 JV2570.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2570.GEOID18 height accuracy estimate available here.
 JV2570
 JV2570.The vertical order pertains to the NGVD 29 superseded value.
 JV2570
 JV2570.Click photographs - Photos may exist for this station.
 JV2570
 JV2570;                    North         East    Units  Estimated Accuracy
 JV2570;SPC MD       -   177,706.      398,487.      MT  (+/- 10 meters HH2 GPS)
 JV2570
 JV2570_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2595148405(NAD 83)
 JV2570
 JV2570                          SUPERSEDED SURVEY CONTROL
 JV2570
 JV2570  NGVD 29 (11/26/84)  149.114  (m)          489.22   (f) ADJUSTED    2 0
 JV2570
 JV2570.Superseded values are not recommended for survey control.
 JV2570
 JV2570.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2570.See file dsdata.pdf to determine how the superseded data were derived.
 JV2570
 JV2570_MARKER: DD = SURVEY DISK
 JV2570_SETTING: 0 = UNSPECIFIED SETTING
 JV2570_SP_SET: IRON PIPE
 JV2570_STAMPING: 2079
 JV2570_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2570_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2570+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV2570
 JV2570  HISTORY     - Date     Condition        Report By
 JV2570  HISTORY     - UNK      MONUMENTED       WSSC
 JV2570  HISTORY     - 1946     GOOD             WSSC
 JV2570  HISTORY     - 20030821 GOOD             GEOCAC
 JV2570  HISTORY     - 20050405 GOOD             USPSQD
 JV2570
 JV2570                          STATION DESCRIPTION
 JV2570
 JV2570'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2570'0.7 MI N FROM GARY.
 JV2570'ABOUT 0.7 MILE NORTH ALONG THE GARY-GLENWOOD ROAD FROM THE JUNCTION
 JV2570'OF THE GARY-TRIADELPHIA ROAD AT GARY, HOWARD COUNTY, ABOUT 0.1
 JV2570'MILE SOUTHWEST OF A BRIDGE OVER DORSEY BRANCH, AT THE JUNCTION
 JV2570'OF A LANE LEADING SOUTHWEST, 87.8 FEET EAST OF A 16-INCH ASH
 JV2570'TREE, 79.3 FEET NORTHEAST OF A 12-INCH WALNUT TREE, 43.1 FEET
 JV2570'NORTHWEST OF A FENCE CORNER, AND 17.8 FEET WEST OF THE CENTER
 JV2570'LINE OF THE ROAD.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV2570'STANDARD DISK, STAMPED 2079 AND SET IN THE TOP OF A CONCRETE-FILLED
 JV2570'IRON PIPE.
 JV2570
 JV2570                          STATION RECOVERY (2003)
 JV2570
 JV2570'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV2570'STATION IS ON THE EAST SIDE OF SHADY LANE, ABOUT 200 FEET NORTH OF THE
 JV2570'INTERSECTION OF WINDRIDGE COURT, AND ABOUT 12 INCHES BELOW GRADE.
 JV2570'THE MARK IS ABOUT 8 INCHES NORTHWEST OF AN ORANGE CARSONITE WITNESS
 JV2570'POST AND ABOUT 4 FEET NORTHWEST OF THE CENTER OF A GREEN CATV BOX.
 JV2570'THE DISK ITSELF IS ABOUT 2.5 INCHES IN DIAMETER AND IS NOT SURROUNDED
 JV2570'BY A CONCRETE MASS.
 JV2570
 JV2570                          STATION RECOVERY (2005)
 JV2570
 JV2570'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV2570'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1358 ***********************************************************************
 HV1358  DESIGNATION -  2081 WSSC
 HV1358  PID         -  HV1358
 HV1358  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1358  COUNTRY     -  US
 HV1358  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1358
 HV1358                         *CURRENT SURVEY CONTROL
 HV1358  ______________________________________________________________________
 HV1358* NAD 83(1986) POSITION- 38 56 06.     (N) 076 57 46.     (W)   SCALED
 HV1358* NAVD 88 ORTHO HEIGHT -    24.02  (+/-2cm)       78.8   (feet) VERTCON3
 HV1358  ______________________________________________________________________
 HV1358  GEOID HEIGHT    -        -32.135 (meters)                     GEOID18
 HV1358  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1358
 HV1358.The horizontal coordinates were scaled from a map and have
 HV1358.an estimated accuracy of +/- 6 seconds.
 HV1358
 HV1358.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1358.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1358
 HV1358.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1358.GEOID18 height accuracy estimate available here.
 HV1358
 HV1358.The vertical order pertains to the NGVD 29 superseded value.
 HV1358
 HV1358.Click photographs - Photos may exist for this station.
 HV1358
 HV1358;                    North         East    Units  Estimated Accuracy
 HV1358;SPC MD       -   140,790.      403,230.      MT  (+/- 180 meters Scaled)
 HV1358
 HV1358_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ298113(NAD 83)
 HV1358
 HV1358                          SUPERSEDED SURVEY CONTROL
 HV1358
 HV1358  NGVD 29 (11/26/84)   24.244  (m)           79.54   (f) ADJUSTED    2 0
 HV1358
 HV1358.Superseded values are not recommended for survey control.
 HV1358
 HV1358.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1358.See file dsdata.pdf to determine how the superseded data were derived.
 HV1358
 HV1358_MARKER: DD = SURVEY DISK
 HV1358_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1358_SP_SET: BUILDING
 HV1358_STAMPING: 2081
 HV1358_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1358
 HV1358  HISTORY     - Date     Condition        Report By
 HV1358  HISTORY     - UNK      MONUMENTED       WSSC
 HV1358  HISTORY     - 1944     GOOD             WSSC
 HV1358
 HV1358                          STATION DESCRIPTION
 HV1358
 HV1358'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1358'AT MT RAINIER.
 HV1358'ON EASTERN AVENUE, AT THE INTERSECTION OF RHODE ISLAND AVENUE,
 HV1358'AT NALLEY FUNERAL HOME, AND IN THE SOUTHEAST CORNER OF THE
 HV1358'BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1083 ***********************************************************************
 JV1083  DESIGNATION -  2085
 JV1083  PID         -  JV1083
 JV1083  STATE/COUNTY-  MD/HOWARD
 JV1083  COUNTRY     -  US
 JV1083  USGS QUAD   -  CLARKSVILLE (2016)
 JV1083
 JV1083                         *CURRENT SURVEY CONTROL
 JV1083  ______________________________________________________________________
 JV1083* NAD 83(1986) POSITION- 39 09 02.     (N) 076 55 19.     (W)   SCALED
 JV1083* NAVD 88 ORTHO HEIGHT -   140.06  (+/-2cm)      459.5   (feet) VERTCON3
 JV1083  ______________________________________________________________________
 JV1083  GEOID HEIGHT    -        -32.078 (meters)                     GEOID18
 JV1083  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1083
 JV1083.The horizontal coordinates were scaled from a map and have
 JV1083.an estimated accuracy of +/- 6 seconds.
 JV1083
 JV1083.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1083.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1083
 JV1083.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1083.GEOID18 height accuracy estimate available here.
 JV1083
 JV1083.The vertical order pertains to the NGVD 29 superseded value.
 JV1083
 JV1083.Click photographs - Photos may exist for this station.
 JV1083
 JV1083;                    North         East    Units  Estimated Accuracy
 JV1083;SPC MD       -   164,720.      406,750.      MT  (+/- 180 meters Scaled)
 JV1083
 JV1083_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ339352(NAD 83)
 JV1083
 JV1083                          SUPERSEDED SURVEY CONTROL
 JV1083
 JV1083  NGVD 29 (11/26/84)  140.270  (m)          460.20   (f) ADJUSTED    2 0
 JV1083
 JV1083.Superseded values are not recommended for survey control.
 JV1083
 JV1083.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1083.See file dsdata.pdf to determine how the superseded data were derived.
 JV1083
 JV1083_STAMPING: 2085
 JV1083
 JV1083  HISTORY     - Date     Condition        Report By
 JV1083  HISTORY     - UNK      MONUMENTED       WSSC
 JV1083  HISTORY     - 1939     GOOD             WSSC
 JV1083  HISTORY     - 20201028 MARK NOT FOUND   PROFLN
 JV1083
 JV1083                          STATION DESCRIPTION
 JV1083
 JV1083'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1083'AT FULTON.
 JV1083'AT FULTON, HOWARD COUNTY, ON THE LAUREL-HIGHLAND ROAD, AT THE
 JV1083'JUNCTION OF A ROAD LEADING SOUTH, 55.4 FEET WEST OF THE CENTER
 JV1083'LINE OF THE SIDE ROAD, NEAR THE GERMAN LUTHERAN CHURCH, 21.8
 JV1083'FEET SOUTH OF THE SOUTHEAST CORNER OF THE CHURCH, 27.5 FEET
 JV1083'SOUTHEAST OF THE SOUTHEAST CORNER OF THE CHOIR PROJECTION, 42.9
 JV1083'FEET NORTHWEST OF A FENCE CORNER, 9.6 FEET NORTHEAST OF A 10-INCH
 JV1083'CEDAR TREE, AND 4.6 FEET NORTH OF THE FENCE.  A WASHINGTON
 JV1083'SUBURBAN SANITARY DISTRICT STANDARD DISK, STAMPED 2085 AND SET
 JV1083'IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
 JV1083
 JV1083                          STATION RECOVERY (2020)
 JV1083
 JV1083'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV1083'BELIEVED DESTROYED BY CONSTRUCTION OF A NEW CHURCH IN 1982.  THE
 JV1083'DISTANCE OFF THE SIDE RD (MURPHY RD) WAS SEARCHED WITH A METAL
 JV1083'DETECTOR WITH TOO MANY POSITIVES TO SEARCH AT EACH ONE.  ONLY ABOUT 10
 JV1083'FT (3.0 M) OF GRASS REMAINS AT THE DISTANCE OFF THE ROAD - THE REST IS
 JV1083'PARKING LOT.  THE DISTANCE FROM THE ROAD IS 10 FT (3.0 M) DIFFERENT
 JV1083'THAN THE DISTANCE FROM THE CURRENT FENCE CORNER, SO ALONG WITH A
 JV1083'DIFFERENT CHURCH IT MAY HAVE BEEN A DIFFERENT FENCE IN 1939.  AN
 JV1083'ATTEMPT WAS MADE TO OBTAIN THE PLANS OF THE NEW CHURCH VERSUS THE
 JV1083'LOCATION OF THE OLD CHURCH BUT NO RESPONSE WAS FORTHCOMING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2594 ***********************************************************************
 JV2594  DESIGNATION -  2088 WSSC
 JV2594  PID         -  JV2594
 JV2594  STATE/COUNTY-  MD/MONTGOMERY
 JV2594  COUNTRY     -  US
 JV2594  USGS QUAD   -  GAITHERSBURG (2016)
 JV2594
 JV2594                         *CURRENT SURVEY CONTROL
 JV2594  ______________________________________________________________________
 JV2594* NAD 83(1986) POSITION- 39 13 58.     (N) 077 08 32.     (W)   SCALED
 JV2594* NAVD 88 ORTHO HEIGHT -   175.54  (+/-2cm)      575.9   (feet) VERTCON3
 JV2594  ______________________________________________________________________
 JV2594  GEOID HEIGHT    -        -31.780 (meters)                     GEOID18
 JV2594  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2594
 JV2594.The horizontal coordinates were scaled from a map and have
 JV2594.an estimated accuracy of +/- 6 seconds.
 JV2594
 JV2594.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2594.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2594
 JV2594.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2594.GEOID18 height accuracy estimate available here.
 JV2594
 JV2594.The vertical order pertains to the NGVD 29 superseded value.
 JV2594
 JV2594.Click photographs - Photos may exist for this station.
 JV2594
 JV2594;                    North         East    Units  Estimated Accuracy
 JV2594;SPC MD       -   173,860.      387,720.      MT  (+/- 180 meters Scaled)
 JV2594
 JV2594_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ151447(NAD 83)
 JV2594
 JV2594                          SUPERSEDED SURVEY CONTROL
 JV2594
 JV2594  NGVD 29 (11/26/84)  175.742  (m)          576.58   (f) ADJUSTED    2 0
 JV2594
 JV2594.Superseded values are not recommended for survey control.
 JV2594
 JV2594.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2594.See file dsdata.pdf to determine how the superseded data were derived.
 JV2594
 JV2594_MARKER: DD = SURVEY DISK
 JV2594_SETTING: 0 = UNSPECIFIED SETTING
 JV2594_SP_SET: IRON PIPE
 JV2594_STAMPING: 2088
 JV2594_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2594
 JV2594  HISTORY     - Date     Condition        Report By
 JV2594  HISTORY     - UNK      MONUMENTED       WSSC
 JV2594  HISTORY     - 1946     GOOD             WSSC
 JV2594
 JV2594                          STATION DESCRIPTION
 JV2594
 JV2594'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2594'1.5 MI S FROM ETCHISON.
 JV2594'ABOUT 1.5 MILES SOUTH ALONG THE ETCHISON-LAYTONSVILLE ROAD (STATE
 JV2594'HIGHWAY 108) FROM THE GENERAL STORE AT ETCHISON, MONTGOMERY
 JV2594'COUNTY, ABOUT 1.4 MILES NORTH OF LAYTONSVILLE, AT THE JUNCTION
 JV2594'OF A COUNTY ROAD LEADING WEST, 56 FEET NORTH OF THE EXTENDED
 JV2594'CENTER LINE OF THE COUNTY ROAD, ABOUT 20 FEET EAST OF THE CENTER
 JV2594'LINE OF THE COUNTY ROAD, ABOUT 20 FEET EAST OF THE CENTER LINE
 JV2594'OF THE HIGHWAY, NEAR A CULVERT UNDER THE HIGHWAY, 42.8 FEET
 JV2594'NORTHEAST OF THE NORTHEAST CORNER OF THE WEST HEAD WALL, 30.5
 JV2594'FEET NORTH OF THE NORTHWEST CORNER OF THE EAST HEAD WALL, 49
 JV2594'FEET SOUTH OF A 10-INCH SYCAMORE TREE, AND 40 FEET EAST OF A
 JV2594'6-INCH SYCAMORE.  A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD
 JV2594'DISK, STAMPED 2088 AND SET IN THE TOP OF A CONCRETE-FILLED IRON
 JV2594'PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1551 ***********************************************************************
 JV1551  DESIGNATION -  21
 JV1551  PID         -  JV1551
 JV1551  STATE/COUNTY-  MD/BALTIMORE
 JV1551  COUNTRY     -  US
 JV1551  USGS QUAD   -  HEREFORD (2016)
 JV1551
 JV1551                         *CURRENT SURVEY CONTROL
 JV1551  ______________________________________________________________________
 JV1551* NAD 83(1986) POSITION- 39 31 49.     (N) 076 37 52.     (W)   SCALED
 JV1551* NAVD 88 ORTHO HEIGHT -    77.747 (meters)      255.07  (feet) ADJUSTED
 JV1551  ______________________________________________________________________
 JV1551  GEOID HEIGHT    -        -32.371 (meters)                     GEOID18
 JV1551  DYNAMIC HEIGHT  -         77.708 (meters)      254.95  (feet) COMP
 JV1551  MODELED GRAVITY -    980,123.0   (mgal)                       NAVD 88
 JV1551
 JV1551  VERT ORDER      -  SECOND    CLASS 0
 JV1551
 JV1551.The horizontal coordinates were scaled from a map and have
 JV1551.an estimated accuracy of +/- 6 seconds.
 JV1551
 JV1551.The orthometric height was determined by differential leveling and
 JV1551.adjusted by the NATIONAL GEODETIC SURVEY
 JV1551.in June 1991.
 JV1551
 JV1551.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1551.GEOID18 height accuracy estimate available here.
 JV1551
 JV1551.Click photographs - Photos may exist for this station.
 JV1551
 JV1551.The dynamic height is computed by dividing the NAVD 88
 JV1551.geopotential number by the normal gravity value computed on the
 JV1551.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1551.degrees latitude (g = 980.6199 gals.).
 JV1551
 JV1551.The modeled gravity was interpolated from observed gravity values.
 JV1551
 JV1551;                    North         East    Units  Estimated Accuracy
 JV1551;SPC MD       -   206,940.      431,720.      MT  (+/- 180 meters Scaled)
 JV1551
 JV1551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ598768(NAD 83)
 JV1551
 JV1551                          SUPERSEDED SURVEY CONTROL
 JV1551
 JV1551  NGVD 29 (11/26/84)   77.946  (m)          255.73   (f) ADJUSTED    2 0
 JV1551
 JV1551.Superseded values are not recommended for survey control.
 JV1551
 JV1551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1551.See file dsdata.pdf to determine how the superseded data were derived.
 JV1551
 JV1551_MARKER: B = BOLT
 JV1551_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1551_SP_SET: BRIDGE
 JV1551_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1551
 JV1551  HISTORY     - Date     Condition        Report By
 JV1551  HISTORY     - UNK      MONUMENTED       PRR
 JV1551  HISTORY     - 1959     GOOD             CGS
 JV1551  HISTORY     - 20010827 MARK NOT FOUND   MDSHA
 JV1551
 JV1551                          STATION DESCRIPTION
 JV1551
 JV1551'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1551'0.8 MI SE FROM SPARKS.
 JV1551'0.8 MILE SOUTHEAST ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV1551'CROSSING OF SPARKS ROAD AT SPARKS, ABOUT 0.35 MILE SOUTHEAST OF
 JV1551'MILEPOST NO. 19, ON THE TOP OF THE EAST END OF THE SOUTH STONE
 JV1551'ABUTMENT OF BRIDGE NO. 18.75 OVER CARROLL BRANCH, 4 1/2 FEET
 JV1551'EAST OF THE EAST RAIL AND 1 FOOT BELOW THE LEVEL OF THE TRACK.
 JV1551
 JV1551                          STATION RECOVERY (2001)
 JV1551
 JV1551'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1551'NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1130 ***********************************************************************
 JV1130  DESIGNATION -  21
 JV1130  PID         -  JV1130
 JV1130  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1130  COUNTRY     -  US
 JV1130  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1130
 JV1130                         *CURRENT SURVEY CONTROL
 JV1130  ______________________________________________________________________
 JV1130* NAD 83(1986) POSITION- 39 17 27.18   (N) 076 36 37.62   (W)   HD_HELD1
 JV1130* NAVD 88 ORTHO HEIGHT -     6.020 (meters)       19.75  (feet) ADJUSTED
 JV1130  ______________________________________________________________________
 JV1130  GEOID HEIGHT    -        -32.729 (meters)                     GEOID18
 JV1130  DYNAMIC HEIGHT  -          6.017 (meters)       19.74  (feet) COMP
 JV1130  MODELED GRAVITY -    980,104.1   (mgal)                       NAVD 88
 JV1130
 JV1130  VERT ORDER      -  FIRST     CLASS I
 JV1130
 JV1130.The horizontal coordinates were determined by differentially corrected
 JV1130.hand held GPS observations or other comparable positioning techniques
 JV1130.and have an estimated accuracy of +/- 3 meters.
 JV1130
 JV1130.The orthometric height was determined by differential leveling and
 JV1130.adjusted by the NATIONAL GEODETIC SURVEY
 JV1130.in June 1991.
 JV1130
 JV1130.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1130.GEOID18 height accuracy estimate available here.
 JV1130
 JV1130.Click photographs - Photos may exist for this station.
 JV1130
 JV1130.The dynamic height is computed by dividing the NAVD 88
 JV1130.geopotential number by the normal gravity value computed on the
 JV1130.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1130.degrees latitude (g = 980.6199 gals.).
 JV1130
 JV1130.The modeled gravity was interpolated from observed gravity values.
 JV1130
 JV1130;                    North         East    Units  Estimated Accuracy
 JV1130;SPC MD       -   180,370.0     433,605.8     MT  (+/- 3 meters HH1 GPS) 
 JV1130
 JV1130_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6111750293(NAD 83)
 JV1130
 JV1130                          SUPERSEDED SURVEY CONTROL
 JV1130
 JV1130  NGVD 29 (11/26/84)    6.263  (m)           20.55   (f) ADJUSTED    1 1
 JV1130
 JV1130.Superseded values are not recommended for survey control.
 JV1130
 JV1130.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1130.See file dsdata.pdf to determine how the superseded data were derived.
 JV1130
 JV1130_STAMPING: 21 MARYLAND BALTO
 JV1130_MARK LOGO: USGS
 JV1130_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1130+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV1130
 JV1130  HISTORY     - Date     Condition        Report By
 JV1130  HISTORY     - 1907     MONUMENTED       USGS
 JV1130  HISTORY     - 1959     GOOD             CGS
 JV1130  HISTORY     - 1971     GOOD             NGS
 JV1130  HISTORY     - 20040714 GOOD             GEOCAC
 JV1130  HISTORY     - 20060527 GOOD             NGS
 JV1130  HISTORY     - 20110315 GOOD             GEOCAC
 JV1130  HISTORY     - 20170820 MARK NOT FOUND   GEOCAC
 JV1130
 JV1130                          STATION DESCRIPTION
 JV1130
 JV1130'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1130'AT BALTIMORE.
 JV1130'AT BALTIMORE, AT THE CITY HALL, ALONG HOLIDAY STREET, BETWEEN
 JV1130'FAYETTE AND LEXINGTON STREET, SET VERTICALLY IN THE EAST CONCRETE
 JV1130'FACE OF THE CITY HALL, ABOUT MIDWAY BETWEEN THE TWO EAST ENTRANCE,
 JV1130'25 FEET WEST OF THE WEST CURB OF HOLIDAY STREET, 5 FEET SOUTH
 JV1130'OF THE CENTER OF A DOOR AT THE ENTRANCE TO THE CITY HALL BASEMENT,
 JV1130'AND 0.6 FOOT ABOVE THE LEVEL OF THE SIDEWALK.
 JV1130
 JV1130                          STATION RECOVERY (1971)
 JV1130
 JV1130'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1130'RECOVERED IN GOOD CONDITION.
 JV1130
 JV1130                          STATION RECOVERY (2004)
 JV1130
 JV1130'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV1130'RECOVERED IN GOOD CONDITION.
 JV1130
 JV1130                          STATION RECOVERY (2006)
 JV1130
 JV1130'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DW)
 JV1130'HOLIDAY ST. IN FRONT OF BLDG. IS NOW PARKING LOT WITH NO CENTER LINE.
 JV1130
 JV1130                          STATION RECOVERY (2011)
 JV1130
 JV1130'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV1130'RECOVERED IN GOOD CONDITION.
 JV1130
 JV1130                          STATION RECOVERY (2017)
 JV1130
 JV1130'RECOVERY NOTE BY GEOCACHING 2017 (RLM)
 JV1130'THE DISK IS MISSING, BUT THE STEM IS INTACT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1005 ***********************************************************************
 HU1005  DESIGNATION -  21
 HU1005  PID         -  HU1005
 HU1005  STATE/COUNTY-  MD/DORCHESTER
 HU1005  COUNTRY     -  US
 HU1005  USGS QUAD   -  EAST NEW MARKET (2016)
 HU1005
 HU1005                         *CURRENT SURVEY CONTROL
 HU1005  ______________________________________________________________________
 HU1005* NAD 83(1986) POSITION- 38 32 24.     (N) 075 56 48.     (W)   SCALED
 HU1005* NAVD 88 ORTHO HEIGHT -     6.349 (meters)       20.83  (feet) ADJUSTED
 HU1005  ______________________________________________________________________
 HU1005  GEOID HEIGHT    -        -35.276 (meters)                     GEOID18
 HU1005  DYNAMIC HEIGHT  -          6.345 (meters)       20.82  (feet) COMP
 HU1005  MODELED GRAVITY -    980,015.9   (mgal)                       NAVD 88
 HU1005
 HU1005  VERT ORDER      -  SECOND    CLASS 0
 HU1005
 HU1005.The horizontal coordinates were scaled from a map and have
 HU1005.an estimated accuracy of +/- 6 seconds.
 HU1005
 HU1005.The orthometric height was determined by differential leveling and
 HU1005.adjusted by the NATIONAL GEODETIC SURVEY
 HU1005.in June 1991.
 HU1005
 HU1005.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1005.GEOID18 height accuracy estimate available here.
 HU1005
 HU1005.Click photographs - Photos may exist for this station.
 HU1005
 HU1005.The dynamic height is computed by dividing the NAVD 88
 HU1005.geopotential number by the normal gravity value computed on the
 HU1005.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1005.degrees latitude (g = 980.6199 gals.).
 HU1005
 HU1005.The modeled gravity was interpolated from observed gravity values.
 HU1005
 HU1005;                    North         East    Units  Estimated Accuracy
 HU1005;SPC MD       -    97,470.      491,830.      MT  (+/- 180 meters Scaled)
 HU1005
 HU1005_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH174661(NAD 83)
 HU1005
 HU1005                          SUPERSEDED SURVEY CONTROL
 HU1005
 HU1005  NGVD 29 (11/26/84)    6.576  (m)           21.57   (f) ADJUSTED    2 0
 HU1005
 HU1005.Superseded values are not recommended for survey control.
 HU1005
 HU1005.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1005.See file dsdata.pdf to determine how the superseded data were derived.
 HU1005
 HU1005_MARKER: P = PIPE CAP
 HU1005_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HU1005_STAMPING: 21 BALTO
 HU1005_MARK LOGO: USGS
 HU1005_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1005
 HU1005  HISTORY     - Date     Condition        Report By
 HU1005  HISTORY     - 1899     MONUMENTED       USGS
 HU1005  HISTORY     - 1942     GOOD             CGS
 HU1005  HISTORY     - 1971     MARK NOT FOUND   NGS
 HU1005
 HU1005                          STATION DESCRIPTION
 HU1005
 HU1005'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU1005'AT LINKWOOD.
 HU1005'THIS MARK IS ALONG HIGHWAY 213 ABOUT 50 FEET SOUTHWEST OF THE
 HU1005'RAILROAD CROSSING AT LINKWOOD, DORCHESTER COUNTY, IN THE CENTER
 HU1005'OF THE FORKS OF THE DIRT ROAD INTERSECTING THE HIGHWAY, 35 FEET
 HU1005'SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY AND IS A U.S.
 HU1005'GEOLOGICAL CAP RIVITED ON THE TOP OF AN IRON PIPE.  REPORTED IN
 HU1005'OCTOBER 1944 THAT THIS MARK IS ON A TRAVELED ROAD, EXTENDS ABOVE
 HU1005'THE SURFACE OF THE ROAD, AND HAS BEEN STRUCK SO OFTEN THE PIPE
 HU1005'IS NOT VERTICAL AND THE SURFACE OF THE CAP IS CONCAVE.
 HU1005
 HU1005                          STATION RECOVERY (1971)
 HU1005
 HU1005'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HU1005'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6442 ***********************************************************************
 DG6442  DESIGNATION -  21 04
 DG6442  PID         -  DG6442
 DG6442  STATE/COUNTY-  MD/TALBOT
 DG6442  COUNTRY     -  US
 DG6442  USGS QUAD   -  TILGHMAN (2016)
 DG6442
 DG6442                         *CURRENT SURVEY CONTROL
 DG6442  ______________________________________________________________________
 DG6442* NAD 83(1986) POSITION- 38 43 11.6    (N) 076 16 35.9    (W)   HD_HELD2
 DG6442* NAVD 88 ORTHO HEIGHT -     1.229 (meters)        4.03  (feet) ADJUSTED
 DG6442  ______________________________________________________________________
 DG6442  GEOID HEIGHT    -        -34.325 (meters)                     GEOID18
 DG6442  DYNAMIC HEIGHT  -          1.229 (meters)        4.03  (feet) COMP
 DG6442  MODELED GRAVITY -    980,040.8   (mgal)                       NAVD 88
 DG6442
 DG6442  VERT ORDER      -  SECOND    CLASS I
 DG6442
 DG6442.The horizontal coordinates were established by autonomous hand held GPS
 DG6442.observations and have an estimated accuracy of +/- 10 meters.
 DG6442
 DG6442.The orthometric height was determined by differential leveling and
 DG6442.adjusted by the NATIONAL GEODETIC SURVEY
 DG6442.in September 2004.
 DG6442
 DG6442.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6442.GEOID18 height accuracy estimate available here.
 DG6442
 DG6442.Click photographs - Photos may exist for this station.
 DG6442
 DG6442.The dynamic height is computed by dividing the NAVD 88
 DG6442.geopotential number by the normal gravity value computed on the
 DG6442.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6442.degrees latitude (g = 980.6199 gals.).
 DG6442
 DG6442.The modeled gravity was interpolated from observed gravity values.
 DG6442
 DG6442;                    North         East    Units  Estimated Accuracy
 DG6442;SPC MD       -   117,161.      462,905.      MT  (+/- 10 meters HH2 GPS)
 DG6442
 DG6442_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8901786466(NAD 83)
 DG6442
 DG6442                          SUPERSEDED SURVEY CONTROL
 DG6442
 DG6442.No superseded survey control is available for this station.
 DG6442
 DG6442_MARKER: DD = SURVEY DISK
 DG6442_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6442_STAMPING: 21-04 1999
 DG6442_MARK LOGO: USACE
 DG6442_PROJECTION: FLUSH
 DG6442_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6442_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6442+STABILITY: SURFACE MOTION
 DG6442_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6442+SATELLITE: SATELLITE OBSERVATIONS - March 07, 2005
 DG6442
 DG6442  HISTORY     - Date     Condition        Report By
 DG6442  HISTORY     - 1999     MONUMENTED       USACE
 DG6442  HISTORY     - 19991213 GOOD             MDSHA
 DG6442  HISTORY     - 20050307 GOOD             USPSQD
 DG6442
 DG6442                          STATION DESCRIPTION
 DG6442
 DG6442'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6442'THE MARK IS LOCATED ABOUT 5.1 MI (8.21 KM) WEST-NORTHWEST OF BELLEVUE,
 DG6442'3.5 MI (5.63 KM) SOUTH OF BOZMAN AND 0.5 MI (0.8 KM) SOUTHEAST OF
 DG6442'NEAVITT.  OWNERSHIP--ROAD RIGHT-OF-WAY.  TO REACH THE MARK FROM THE
 DG6442'POST OFFICE IN NEAVITT, PROCEED SOUTH ALONG STATE HIGHWAY 579
 DG6442'(BOZMAN-NEAVITT ROAD) FOR 0.8 MILES (1.3 KM) TO NEAVITT LANDING AND
 DG6442'THE MARK ON THE LEFT, AT THE BEGINNING OF THE MACADAM PARKING LOT FOR
 DG6442'THE BOAT LAUNCH.  IT IS 19.1 FEET (5.8 M) NORTH OF THE CENTER OF THE
 DG6442'HIGHWAY, 85.1 FEET (25.9 M) NORTHEAST OF POWER POLE NUMBER
 DG6442'27618-06234, 80.1 FEET (24.4 M) NORTHEAST OF TIDAL MARK 21-05, 130.8
 DG6442'FEET (39.9 M) SOUTHWEST OF THE SOUTHWEST END OF THE SOUTHEAST BULKHEAD
 DG6442'FOR THE BOAT LAUNCH AND 8.7 FEET (2.7 M) EAST OF A CARSONITE WITNESS
 DG6442'POST.  IT IS A USE DISK DISK SET IN THE TOP OF AN 8-INCH (20 CM) ROUND
 DG6442'CONCRETE MONUMENT FLUSH WITH THE GROUND AND LEVEL WITH THE SURFACE OF
 DG6442'THE HIGHWAY.
 DG6442
 DG6442                          STATION RECOVERY (2005)
 DG6442
 DG6442'RECOVERY NOTE BY US POWER SQUADRON 2005 (KMD)
 DG6442'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6441 ***********************************************************************
 DG6441  DESIGNATION -  21 05
 DG6441  PID         -  DG6441
 DG6441  STATE/COUNTY-  MD/TALBOT
 DG6441  COUNTRY     -  US
 DG6441  USGS QUAD   -  TILGHMAN (2016)
 DG6441
 DG6441                         *CURRENT SURVEY CONTROL
 DG6441  ______________________________________________________________________
 DG6441* NAD 83(1986) POSITION- 38 43 10.8    (N) 076 16 36.3    (W)   HD_HELD2
 DG6441* NAVD 88 ORTHO HEIGHT -     1.616 (meters)        5.30  (feet) ADJUSTED
 DG6441  ______________________________________________________________________
 DG6441  GEOID HEIGHT    -        -34.325 (meters)                     GEOID18
 DG6441  DYNAMIC HEIGHT  -          1.615 (meters)        5.30  (feet) COMP
 DG6441  MODELED GRAVITY -    980,040.8   (mgal)                       NAVD 88
 DG6441
 DG6441  VERT ORDER      -  SECOND    CLASS I
 DG6441
 DG6441.The horizontal coordinates were established by autonomous hand held GPS
 DG6441.observations and have an estimated accuracy of +/- 10 meters.
 DG6441
 DG6441.The orthometric height was determined by differential leveling and
 DG6441.adjusted by the NATIONAL GEODETIC SURVEY
 DG6441.in September 2004.
 DG6441
 DG6441.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6441.GEOID18 height accuracy estimate available here.
 DG6441
 DG6441.Click photographs - Photos may exist for this station.
 DG6441
 DG6441.The dynamic height is computed by dividing the NAVD 88
 DG6441.geopotential number by the normal gravity value computed on the
 DG6441.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6441.degrees latitude (g = 980.6199 gals.).
 DG6441
 DG6441.The modeled gravity was interpolated from observed gravity values.
 DG6441
 DG6441;                    North         East    Units  Estimated Accuracy
 DG6441;SPC MD       -   117,136.      462,895.      MT  (+/- 10 meters HH2 GPS)
 DG6441
 DG6441_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8900786442(NAD 83)
 DG6441
 DG6441                          SUPERSEDED SURVEY CONTROL
 DG6441
 DG6441.No superseded survey control is available for this station.
 DG6441
 DG6441_MARKER: DD = SURVEY DISK
 DG6441_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6441_STAMPING: 21-05 1999
 DG6441_MARK LOGO: USACE
 DG6441_PROJECTION: FLUSH
 DG6441_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6441_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6441+STABILITY: SURFACE MOTION
 DG6441_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6441+SATELLITE: SATELLITE OBSERVATIONS - March 07, 2005
 DG6441
 DG6441  HISTORY     - Date     Condition        Report By
 DG6441  HISTORY     - 1999     MONUMENTED       USACE
 DG6441  HISTORY     - 19991213 GOOD             MDSHA
 DG6441  HISTORY     - 20050307 GOOD             USPSQD
 DG6441
 DG6441                          STATION DESCRIPTION
 DG6441
 DG6441'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6441'THE MARK IS LOCATED ABOUT 5.2 MI (8.37 KM) WEST-NORTHWEST OF BELLEVUE,
 DG6441'3.5 MI (5.63 KM) SOUTH OF BOZMAN AND 0.5 MI (0.8 KM) SOUTHEAST OF
 DG6441'NEAVITT.  OWNERSHIP--ROAD RIGHT-OF-WAY.  TO REACH THE MARK FROM THE
 DG6441'POST OFFICE IN NEAVITT, PROCEED SOUTH ALONG STATE HIGHWAY 579
 DG6441'(BOZMAN-NEAVITT ROAD) FOR 0.7 MILES (1.1 KM) TO NEAVITT LANDING AND
 DG6441'THE MARK ON THE RIGHT, AT THE BEGINNING OF THE MACADAM PARKING LOT FOR
 DG6441'THE BOAT LAUNCH.  IT IS 19.8 FEET (6.0 M) SOUTH OF THE CENTER OF THE
 DG6441'HIGHWAY, 6.1 FEET (1.9 M) EAST OF POWER POLE NUMBER 27618-06234, 5.5
 DG6441'FEET (1.7 M) EAST OF A CARSONITE WITNESS POST, 80.1 FEET (24.4 M)
 DG6441'SOUTHWEST OF TIDAL MARK 21-04 AND 75.3 FEET (23.0 M) EAST OF THE SOUTH
 DG6441'END OF A 12 INCH (30 CM) CONCRETE PIPE RUNNING UNDER THE HIGHWAY.  IT
 DG6441'IS A USE DISK SET IN THE TOP OF AN 8-INCH (20 CM) ROUND CONCRETE
 DG6441'MONUMENT FLUSH WITH THE GROUND AND LEVEL WITH THE SURFACE OF THE
 DG6441'HIGHWAY.
 DG6441
 DG6441                          STATION RECOVERY (2005)
 DG6441
 DG6441'RECOVERY NOTE BY US POWER SQUADRON 2005 (KMD)
 DG6441'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0236 ***********************************************************************
 HU0236  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0236  DESIGNATION -  21 BALTO
 HU0236  PID         -  HU0236
 HU0236  STATE/COUNTY-  MD/WORCESTER
 HU0236  COUNTRY     -  US
 HU0236  USGS QUAD   -  SNOW HILL (2016)
 HU0236
 HU0236                         *CURRENT SURVEY CONTROL
 HU0236  ______________________________________________________________________
 HU0236* NAD 83(1986) POSITION- 38 10 36.1    (N) 075 23 35.2    (W)   HD_HELD2
 HU0236* NAVD 88 ORTHO HEIGHT -     5.868 (meters)       19.25  (feet) ADJUSTED
 HU0236  ______________________________________________________________________
 HU0236  GEOID HEIGHT    -        -36.212 (meters)                     GEOID18
 HU0236  DYNAMIC HEIGHT  -          5.864 (meters)       19.24  (feet) COMP
 HU0236  MODELED GRAVITY -    979,984.6   (mgal)                       NAVD 88
 HU0236
 HU0236  VERT ORDER      -  SECOND    CLASS I
 HU0236
 HU0236.The horizontal coordinates were established by autonomous hand held GPS
 HU0236.observations and have an estimated accuracy of +/- 10 meters.
 HU0236
 HU0236.The orthometric height was determined by differential leveling and
 HU0236.adjusted by the NATIONAL GEODETIC SURVEY
 HU0236.in June 1991.
 HU0236
 HU0236.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0236.GEOID18 height accuracy estimate available here.
 HU0236
 HU0236.This Tidal Bench Mark is designated as VM 17832
 HU0236.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0236
 HU0236.Click photographs - Photos may exist for this station.
 HU0236
 HU0236.The dynamic height is computed by dividing the NAVD 88
 HU0236.geopotential number by the normal gravity value computed on the
 HU0236.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0236.degrees latitude (g = 980.6199 gals.).
 HU0236
 HU0236.The modeled gravity was interpolated from observed gravity values.
 HU0236
 HU0236;                    North         East    Units  Estimated Accuracy
 HU0236;SPC MD       -    57,855.      540,794.      MT  (+/- 10 meters HH2 GPS)
 HU0236
 HU0236_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6556825492(NAD 83)
 HU0236
 HU0236                          SUPERSEDED SURVEY CONTROL
 HU0236
 HU0236  NGVD 29 (11/26/84)    6.110  (m)           20.05   (f) ADJUSTED    2 0
 HU0236
 HU0236.Superseded values are not recommended for survey control.
 HU0236
 HU0236.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0236.See file dsdata.pdf to determine how the superseded data were derived.
 HU0236
 HU0236_MARKER: DB = BENCH MARK DISK
 HU0236_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0236_SP_SET: STONE PORCH
 HU0236_STAMPING: 21 BALTO
 HU0236_MARK LOGO: USGS
 HU0236_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0236_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0236_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0236+SATELLITE: SATELLITE OBSERVATIONS - October 03, 2010
 HU0236
 HU0236  HISTORY     - Date     Condition        Report By
 HU0236  HISTORY     - 1900     MONUMENTED       USGS
 HU0236  HISTORY     - 1962     GOOD             CGS
 HU0236  HISTORY     - 19900807 GOOD             MDSHA
 HU0236  HISTORY     - 19980716 GOOD             MDSHA
 HU0236  HISTORY     - 20011006 GOOD             USPSQD
 HU0236  HISTORY     - 20031003 GOOD             MDSHA
 HU0236  HISTORY     - 20101003 GOOD             NGS
 HU0236
 HU0236                          STATION DESCRIPTION
 HU0236
 HU0236'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0236'AT SNOW HILL.
 HU0236'AT SNOW HILL, WORCESTER COUNTY, AT THE COUNTY COURTHOUSE, 6 FEET
 HU0236'NORTH OF THE MAIN ENTRANCE, IN THE NORTHWEST SIDE OF A STONE
 HU0236'PORCH, AND 2 FEET ABOVE THE SIDEWALK.  A UNITED STATES GEOLOGICAL
 HU0236'SURVEY STANDARD DISK, STAMPED 21 BALTO AND SET VERTICALLY.
 HU0236
 HU0236                          STATION RECOVERY (1990)
 HU0236
 HU0236'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HU0236'RECOVERED IN GOOD CONDITION.
 HU0236
 HU0236                          STATION RECOVERY (1998)
 HU0236
 HU0236'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 HU0236'RECOVERED AS DESCRIBED.
 HU0236
 HU0236                          STATION RECOVERY (2001)
 HU0236
 HU0236'RECOVERY NOTE BY US POWER SQUADRON 2001 (CGT)
 HU0236'RECOVERED IN GOOD CONDITION.
 HU0236
 HU0236                          STATION RECOVERY (2003)
 HU0236
 HU0236'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 HU0236'RECOVERED AS DESCRIBED.
 HU0236
 HU0236                          STATION RECOVERY (2010)
 HU0236
 HU0236'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HU0236'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7024 ***********************************************************************
 JV7024  DESIGNATION -  21 DA
 JV7024  PID         -  JV7024
 JV7024  STATE/COUNTY-  MD/HOWARD
 JV7024  COUNTRY     -  US
 JV7024  USGS QUAD   -  WOODBINE (2016)
 JV7024
 JV7024                         *CURRENT SURVEY CONTROL
 JV7024  ______________________________________________________________________
 JV7024* NAD 83(2011) POSITION- 39 15 55.07377(N) 077 02 50.10318(W)   ADJUSTED
 JV7024* NAD 83(2011) ELLIP HT-   122.371 (meters)        (06/27/12)   ADJUSTED
 JV7024* NAD 83(2011) EPOCH   -  2010.00
 JV7024* NAVD 88 ORTHO HEIGHT -   154.2   (meters)      506.    (feet) GPS OBS
 JV7024  ______________________________________________________________________
 JV7024  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7024  GEOID HEIGHT    -        -31.832 (meters)                     GEOID99
 JV7024  GEOID HEIGHT    -        -31.851 (meters)                     GEOID18
 JV7024  NAD 83(2011) X  -  1,108,371.805 (meters)                     COMP
 JV7024  NAD 83(2011) Y  - -4,819,013.776 (meters)                     COMP
 JV7024  NAD 83(2011) Z  -  4,015,240.671 (meters)                     COMP
 JV7024  LAPLACE CORR    -         -1.65  (seconds)                    DEFLEC18
 JV7024
 JV7024  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7024  Standards:
 JV7024         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7024            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7024  -------------------------------------------------------------------
 JV7024  NETWORK    1.16   1.35           0.54   0.38   0.69     -0.09985522
 JV7024  -------------------------------------------------------------------
 JV7024  Click here for local accuracies and other accuracy information.
 JV7024
 JV7024.The horizontal coordinates were established by GPS observations
 JV7024.and adjusted by the National Geodetic Survey in June 2012.
 JV7024
 JV7024.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7024.been affixed to the stable North American tectonic plate. See 
 JV7024.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7024
 JV7024.The horizontal coordinates are valid at the epoch date displayed above
 JV7024.which is a decimal equivalence of Year/Month/Day.
 JV7024
 JV7024.The orthometric height was determined by GPS observations and a
 JV7024.high-resolution geoid model.
 JV7024
 JV7024.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7024.GEOID18 height accuracy estimate available here.
 JV7024
 JV7024.Click photographs - Photos may exist for this station.
 JV7024
 JV7024.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7024
 JV7024.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7024
 JV7024.The ellipsoidal height was determined by GPS observations
 JV7024.and is referenced to NAD 83.
 JV7024
 JV7024. The following values were computed from the NAD 83(2011) position.
 JV7024
 JV7024;                    North         East     Units Scale Factor Converg.
 JV7024;SPC MD       -   177,458.995   395,922.266   MT  0.99997290   -0 01 46.8
 JV7024;SPC MD       -   582,213.39  1,298,954.97   sFT  0.99997290   -0 01 46.8
 JV7024;UTM  18      - 4,348,215.254   323,381.314   MT  0.99998410   -1 17 45.8
 JV7024
 JV7024!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7024!SPC MD       -   0.99998080  x   0.99997290  =   0.99995370
 JV7024!UTM  18      -   0.99998080  x   0.99998410  =   0.99996490
 JV7024
 JV7024_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2338148215(NAD 83)
 JV7024
 JV7024                          SUPERSEDED SURVEY CONTROL
 JV7024
 JV7024  NAD 83(2007)-  39 15 55.07375(N)    077 02 50.10399(W) AD(2002.00) 0
 JV7024  ELLIP H (02/10/07)  122.403  (m)                       GP(2002.00)    
 JV7024  ELLIP H (08/30/02)  122.404  (m)                       GP(       ) 4 2
 JV7024  NAD 83(1991)-  39 15 55.07353(N)    077 02 50.10428(W) AD(       ) 1
 JV7024  ELLIP H (02/23/93)  122.297  (m)                       GP(       ) 4 2
 JV7024  NGVD 29 (02/23/93)  154.4    (m)  GEOID90  model used  GPS OBS        
 JV7024
 JV7024.Superseded values are not recommended for survey control.
 JV7024
 JV7024.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7024.See file dsdata.pdf to determine how the superseded data were derived.
 JV7024
 JV7024_MARKER: DD = SURVEY DISK
 JV7024_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7024_STAMPING: 21DA 1992
 JV7024_MARK LOGO: MD-027
 JV7024_PROJECTION: FLUSH
 JV7024_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7024_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7024+STABILITY: SURFACE MOTION
 JV7024_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7024+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7024
 JV7024  HISTORY     - Date     Condition        Report By
 JV7024  HISTORY     - 1992     MONUMENTED       MD-027
 JV7024  HISTORY     - 20000915 GOOD             MD-027
 JV7024  HISTORY     - 20030821 GOOD             GEOCAC
 JV7024
 JV7024                          STATION DESCRIPTION
 JV7024
 JV7024'DESCRIBED BY HOWARD COUNTY MARYLAND 1992
 JV7024'THE STATION IS LOCATED 7.7 MI (12.4 KM) NORTH OF OLNEY, 6.2 MI
 JV7024'(10.0 KM) NORTHEAST OF LAYTONSVILLE AND 8.0 MI (12.9 KM) SOUTHWEST OF
 JV7024'SYKESVILLE.
 JV7024'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 650 AND
 JV7024'97 IN THE LOCALITY OF SUNSHINE IN MONTGOMERY COUNTY, GO NORTH ALONG
 JV7024'HIGHWAY 97 FOR 1.15 MI (1.85 KM) TO BRIDGE OVER PATUXENT RIVER, THEN
 JV7024'CONTINUE NORTH ALONG ROUTE 97 FOR 1.7 MI (2.7 KM) TO INTERSECTION
 JV7024'WITH ROXMILL COURT ON YOUR RIGHT, FROM THERE CONTINUE NORTH ALONG RTE
 JV7024'97 FOR 0.2 MI (0.3 KM) TO THE STATION ON THE WEST SIDE OF THE ROAD.
 JV7024'THE STATION LIES 27.8 FT (8.5 M) WEST OF THE CENTERLINE OF ROUTE 27,
 JV7024'99.7 FT (30.4 M) SOUTH FROM BALTIMORE GAS AND ELECTRIC POLE NUMBER
 JV7024'82069, 181 FT (55.2 M) NORTH OF BALTIMORE GAS AND ELECTRIC POLE
 JV7024'NUMBER 82070, ABOUT 100 FT (30.5 M) SOUTH AND ACROSS THE STREET FROM
 JV7024'THE ENTRANCE TO GLENWOOD BAPTIST CHURCH AND ABOUTH 0.3 MI (0.5 KM)
 JV7024'SOUTH OF THE INTERSECTION WITH ROXBURY ROAD.
 JV7024'THE STATION IS A STANDARD HOWARD COUNTY SURVEY CONTROL DISC, ON TOP OF
 JV7024'A ROUND CONCRETE MONUMENT ABOUT .75 FR IN DIAMETER, THE DISC IS FLUSH
 JV7024'WITH THE GROUND.  THE DISC IS STAMPED HOWARD COUNTY CONTROL PIZZA
 JV7024'1992.
 JV7024'OWNERSHIP --STATE HIGHWAY RIGHT OF WAY.
 JV7024'COMMENT--NO AZIMUTH MARKS OR REFERENCE MARK STATIONS FOR THIS STATION
 JV7024'WERE INCLUDED IN THIS GPS PROJECT.
 JV7024
 JV7024                          STATION RECOVERY (2000)
 JV7024
 JV7024'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7024'REPORT BY  HOWARD COUNTY 2000 RECOVERED AS DESCRIBED IN GOOD
 JV7024'CONDITION
 JV7024'
 JV7024
 JV7024                          STATION RECOVERY (2003)
 JV7024
 JV7024'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV7024'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2615 ***********************************************************************
 JV2615  DESIGNATION -  2110 WSSC
 JV2615  PID         -  JV2615
 JV2615  STATE/COUNTY-  MD/MONTGOMERY
 JV2615  COUNTRY     -  US
 JV2615  USGS QUAD   -  SANDY SPRING (2016)
 JV2615
 JV2615                         *CURRENT SURVEY CONTROL
 JV2615  ______________________________________________________________________
 JV2615* NAD 83(1986) POSITION- 39 08 14.     (N) 077 04 07.     (W)   SCALED
 JV2615* NAVD 88 ORTHO HEIGHT -   163.08  (+/-2cm)      535.0   (feet) VERTCON3
 JV2615  ______________________________________________________________________
 JV2615  GEOID HEIGHT    -        -31.819 (meters)                     GEOID18
 JV2615  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2615
 JV2615.The horizontal coordinates were scaled from a map and have
 JV2615.an estimated accuracy of +/- 6 seconds.
 JV2615
 JV2615.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2615.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2615
 JV2615.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2615.GEOID18 height accuracy estimate available here.
 JV2615
 JV2615.The vertical order pertains to the NGVD 29 superseded value.
 JV2615
 JV2615.Click photographs - Photos may exist for this station.
 JV2615
 JV2615;                    North         East    Units  Estimated Accuracy
 JV2615;SPC MD       -   163,240.      394,070.      MT  (+/- 180 meters Scaled)
 JV2615
 JV2615_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ212340(NAD 83)
 JV2615
 JV2615                          SUPERSEDED SURVEY CONTROL
 JV2615
 JV2615  NGVD 29 (11/26/84)  163.284  (m)          535.71   (f) ADJUSTED    2 0
 JV2615
 JV2615.Superseded values are not recommended for survey control.
 JV2615
 JV2615.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2615.See file dsdata.pdf to determine how the superseded data were derived.
 JV2615
 JV2615_MARKER: B = BOLT
 JV2615_SETTING: 0 = UNSPECIFIED SETTING
 JV2615_SP_SET: IRON PIPE
 JV2615_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2615
 JV2615  HISTORY     - Date     Condition        Report By
 JV2615  HISTORY     - UNK      MONUMENTED       WSSC
 JV2615  HISTORY     - 1944     GOOD             WSSC
 JV2615  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2615
 JV2615                          STATION DESCRIPTION
 JV2615
 JV2615'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2615'0.9 MI S FROM OLNEY.
 JV2615'ON GEORGIA AVENUE (STATE HIGHWAY 97), NEAR THE JUNCTION OF HOLLOW
 JV2615'TREE ROAD TO SANDY SPRING, 155 FEET NORTH OF HOLLOW TREE ROAD,
 JV2615'59 FEET EAST OF THE CENTERLINE OF THE HIGHWAY, AND 2 FEET
 JV2615'SOUTH OF A WOODEN FENCE.
 JV2615
 JV2615                          STATION RECOVERY (1995)
 JV2615
 JV2615'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2615'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2586 ***********************************************************************
 JV2586  DESIGNATION -  2120 WSSC
 JV2586  PID         -  JV2586
 JV2586  STATE/COUNTY-  MD/HOWARD
 JV2586  COUNTRY     -  US
 JV2586  USGS QUAD   -  WOODBINE (2016)
 JV2586
 JV2586                         *CURRENT SURVEY CONTROL
 JV2586  ______________________________________________________________________
 JV2586* NAD 83(1986) POSITION- 39 16 35.     (N) 077 06 17.     (W)   SCALED
 JV2586* NAVD 88 ORTHO HEIGHT -   134.01  (+/-2cm)      439.7   (feet) VERTCON3
 JV2586  ______________________________________________________________________
 JV2586  GEOID HEIGHT    -        -31.815 (meters)                     GEOID18
 JV2586  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2586
 JV2586.The horizontal coordinates were scaled from a map and have
 JV2586.an estimated accuracy of +/- 6 seconds.
 JV2586
 JV2586.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2586.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2586
 JV2586.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2586.GEOID18 height accuracy estimate available here.
 JV2586
 JV2586.The vertical order pertains to the NGVD 29 superseded value.
 JV2586
 JV2586.Click photographs - Photos may exist for this station.
 JV2586
 JV2586;                    North         East    Units  Estimated Accuracy
 JV2586;SPC MD       -   178,690.      390,960.      MT  (+/- 180 meters Scaled)
 JV2586
 JV2586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ184495(NAD 83)
 JV2586
 JV2586                          SUPERSEDED SURVEY CONTROL
 JV2586
 JV2586  NGVD 29 (11/26/84)  134.215  (m)          440.34   (f) ADJUSTED    2 0
 JV2586
 JV2586.Superseded values are not recommended for survey control.
 JV2586
 JV2586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2586.See file dsdata.pdf to determine how the superseded data were derived.
 JV2586
 JV2586_MARKER: B = BOLT
 JV2586_SETTING: 0 = UNSPECIFIED SETTING
 JV2586_SP_SET: IRON PIPE
 JV2586_STAMPING: 2120
 JV2586_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2586
 JV2586  HISTORY     - Date     Condition        Report By
 JV2586  HISTORY     - UNK      MONUMENTED       WSSC
 JV2586  HISTORY     - 1946     GOOD             WSSC
 JV2586
 JV2586                          STATION DESCRIPTION
 JV2586
 JV2586'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2586'AT HIPSLEYS MILL.
 JV2586'AT HIPSLEYS MILL, HOWARD COUNTY, ON THE DAISY-ETCHISON ROAD, ABOUT
 JV2586'250 FEET SOUTHEAST OF THE BRIDGE OVER CABIN BRANCH, ABOUT 150
 JV2586'FEET NORTHWEST OF THE REMAINS OF THE MILL, 54.9 FEET SOUTHWEST
 JV2586'OF A 20-INCH WALNUT TREE, 32.6 FEET SOUTH OF POLE 11083, 24.1
 JV2586'FEET NORTHEAST OF A FENCE CORNER, AND 23.3 FEET SOUTH OF THE
 JV2586'CENTER LINE OF THE ROAD.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV2586'BRASS BOLT AND WASHER, STAMPED 2120 AND SET IN THE TOP OF A
 JV2586'CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1370 ***********************************************************************
 HV1370  DESIGNATION -  2122 WSSC
 HV1370  PID         -  HV1370
 HV1370  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1370  COUNTRY     -  US
 HV1370  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1370
 HV1370                         *CURRENT SURVEY CONTROL
 HV1370  ______________________________________________________________________
 HV1370* NAD 83(1986) POSITION- 38 57 19.     (N) 076 58 53.     (W)   SCALED
 HV1370* NAVD 88 ORTHO HEIGHT -    16.14  (+/-2cm)       53.0   (feet) VERTCON3
 HV1370  ______________________________________________________________________
 HV1370  GEOID HEIGHT    -        -32.068 (meters)                     GEOID18
 HV1370  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1370
 HV1370.The horizontal coordinates were scaled from a map and have
 HV1370.an estimated accuracy of +/- 6 seconds.
 HV1370
 HV1370.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1370.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1370
 HV1370.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1370.GEOID18 height accuracy estimate available here.
 HV1370
 HV1370.The vertical order pertains to the NGVD 29 superseded value.
 HV1370
 HV1370.Click photographs - Photos may exist for this station.
 HV1370
 HV1370;                    North         East    Units  Estimated Accuracy
 HV1370;SPC MD       -   143,040.      401,610.      MT  (+/- 180 meters Scaled)
 HV1370
 HV1370_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ283136(NAD 83)
 HV1370
 HV1370                          SUPERSEDED SURVEY CONTROL
 HV1370
 HV1370  NGVD 29 (11/26/84)   16.366  (m)           53.69   (f) ADJUSTED    2 0
 HV1370
 HV1370.Superseded values are not recommended for survey control.
 HV1370
 HV1370.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1370.See file dsdata.pdf to determine how the superseded data were derived.
 HV1370
 HV1370_MARKER: B = BOLT
 HV1370_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1370_SP_SET: BRIDGE
 HV1370_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1370
 HV1370  HISTORY     - Date     Condition        Report By
 HV1370  HISTORY     - UNK      MONUMENTED       WSSC
 HV1370  HISTORY     - 1944     GOOD             WSSC
 HV1370
 HV1370                          STATION DESCRIPTION
 HV1370
 HV1370'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1370'AT CHILLUM HEIGHTS.
 HV1370'ON CHILLUM ROAD, 0.35 MILE EAST OF THE INTERSECTION OF SARGENT
 HV1370'ROAD, 0.2 MILE WEST OF THE JUNCTION OF LA SALLE ROAD, AT A BRIDGE
 HV1370'OVER A SMALL STREAM, AT THE WEST CORNER OF THE BRIDGE, AND
 HV1370'IN THE WEST WING WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2598 ***********************************************************************
 JV2598  DESIGNATION -  2130 WSSC
 JV2598  PID         -  JV2598
 JV2598  STATE/COUNTY-  MD/MONTGOMERY
 JV2598  COUNTRY     -  US
 JV2598  USGS QUAD   -  GAITHERSBURG (2016)
 JV2598
 JV2598                         *CURRENT SURVEY CONTROL
 JV2598  ______________________________________________________________________
 JV2598* NAD 83(1986) POSITION- 39 12 18.     (N) 077 11 12.     (W)   SCALED
 JV2598* NAVD 88 ORTHO HEIGHT -   117.00  (+/-2cm)      383.9   (feet) VERTCON3
 JV2598  ______________________________________________________________________
 JV2598  GEOID HEIGHT    -        -31.778 (meters)                     GEOID18
 JV2598  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2598
 JV2598.The horizontal coordinates were scaled from a map and have
 JV2598.an estimated accuracy of +/- 6 seconds.
 JV2598
 JV2598.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2598.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2598
 JV2598.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2598.GEOID18 height accuracy estimate available here.
 JV2598
 JV2598.The vertical order pertains to the NGVD 29 superseded value.
 JV2598
 JV2598.Click photographs - Photos may exist for this station.
 JV2598
 JV2598;                    North         East    Units  Estimated Accuracy
 JV2598;SPC MD       -   170,780.      383,880.      MT  (+/- 180 meters Scaled)
 JV2598
 JV2598_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ111418(NAD 83)
 JV2598
 JV2598                          SUPERSEDED SURVEY CONTROL
 JV2598
 JV2598  NGVD 29 (11/26/84)  117.209  (m)          384.54   (f) ADJUSTED    2 0
 JV2598
 JV2598.Superseded values are not recommended for survey control.
 JV2598
 JV2598.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2598.See file dsdata.pdf to determine how the superseded data were derived.
 JV2598
 JV2598_MARKER: B = BOLT
 JV2598_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2598_SP_SET: BRIDGE
 JV2598_STAMPING: 2130
 JV2598_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2598
 JV2598  HISTORY     - Date     Condition        Report By
 JV2598  HISTORY     - UNK      MONUMENTED       WSSC
 JV2598  HISTORY     - 1946     GOOD             WSSC
 JV2598
 JV2598                          STATION DESCRIPTION
 JV2598
 JV2598'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2598'2.3 MI W FROM LAYTONSVILLE.
 JV2598'ABOUT 2.3 MILES WEST ALONG THE LAYTONSVILLE-GOSHEN ROAD FROM
 JV2598'THE HIGHWAY INTERSECTION AT LAYTONSVILLE, MONTGOMERY COUNTY,
 JV2598'ABOUT 0.1 MILE NORTH OF THE GENERAL STORE AT GOSHEN- AT A BRIDGE
 JV2598'OVER A SMALL STREAM TRIBUTARY TO SENECA CREEK, AND IN THE TOP
 JV2598'OF THE WEST END OF THE SOUTH ABUTMENT.  A WASHINGTON SUBURBAN
 JV2598'SANITARY DISTRICT BRASS BOLT AND WASHER, STAMPED 2130.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2597 ***********************************************************************
 JV2597  DESIGNATION -  2132 WSSC
 JV2597  PID         -  JV2597
 JV2597  STATE/COUNTY-  MD/MONTGOMERY
 JV2597  COUNTRY     -  US
 JV2597  USGS QUAD   -  GAITHERSBURG (2016)
 JV2597
 JV2597                         *CURRENT SURVEY CONTROL
 JV2597  ______________________________________________________________________
 JV2597* NAD 83(1986) POSITION- 39 12 31.     (N) 077 10 06.     (W)   SCALED
 JV2597* NAVD 88 ORTHO HEIGHT -   156.28  (+/-2cm)      512.7   (feet) VERTCON3
 JV2597  ______________________________________________________________________
 JV2597  GEOID HEIGHT    -        -31.771 (meters)                     GEOID18
 JV2597  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2597
 JV2597.The horizontal coordinates were scaled from a map and have
 JV2597.an estimated accuracy of +/- 6 seconds.
 JV2597
 JV2597.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2597.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2597
 JV2597.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2597.GEOID18 height accuracy estimate available here.
 JV2597
 JV2597.The vertical order pertains to the NGVD 29 superseded value.
 JV2597
 JV2597.Click photographs - Photos may exist for this station.
 JV2597
 JV2597;                    North         East    Units  Estimated Accuracy
 JV2597;SPC MD       -   171,180.      385,460.      MT  (+/- 180 meters Scaled)
 JV2597
 JV2597_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ127421(NAD 83)
 JV2597
 JV2597                          SUPERSEDED SURVEY CONTROL
 JV2597
 JV2597  NGVD 29 (11/26/84)  156.485  (m)          513.40   (f) ADJUSTED    2 0
 JV2597
 JV2597.Superseded values are not recommended for survey control.
 JV2597
 JV2597.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2597.See file dsdata.pdf to determine how the superseded data were derived.
 JV2597
 JV2597_MARKER: B = BOLT
 JV2597_SETTING: 0 = UNSPECIFIED SETTING
 JV2597_SP_SET: IRON PIPE
 JV2597_STAMPING: 2132
 JV2597_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2597
 JV2597  HISTORY     - Date     Condition        Report By
 JV2597  HISTORY     - UNK      MONUMENTED       WSSC
 JV2597  HISTORY     - 1946     GOOD             WSSC
 JV2597
 JV2597                          STATION DESCRIPTION
 JV2597
 JV2597'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2597'1.3 MI W FROM LAYTONSVILLE.
 JV2597'ABOUT 1.3 MILES WEST ALONG THE LAYTONSVILLE-GOSHEN ROAD (STATE
 JV2597'HIGHWAY 124) FROM THE HIGHWAY INTERSECTION AT LAYTONSVILLE,
 JV2597'MONTGOMERY COUNTY, AT THE JUNCTION OF STATE HIGHWAY 420, 75
 JV2597'FEET EAST OF A CULVERT NEAR THE JUNCTION, OPPOSITE A HOUSE
 JV2597'SOUTH OF THE ROAD, 82.3 FEET NORTHWEST OF THE NORTHEAST CORNER
 JV2597'OF THE HOUSE, 81.2 FEET NORTH OF THE NORTHWEST CORNER, 26 FEET
 JV2597'NORTH OF THE CENTER LINE OF THE ROAD, 39.4 FEET WEST OF AN 8-INCH
 JV2597'LOCUST TREE, 10 FEET EAST OF A 14-INCH LOCUST TREE, 8.5 FEET
 JV2597'WEST OF ANOTHER 14-INCH LOCUST TREE, AND 5 FEET NORTH OF A FENCE.
 JV2597'A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS BOLT AND COPPER
 JV2597'WASHER, STAMPED 2132 AND SET IN THE TOP OF AN IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2599 ***********************************************************************
 JV2599  DESIGNATION -  2134 WSSC
 JV2599  PID         -  JV2599
 JV2599  STATE/COUNTY-  MD/MONTGOMERY
 JV2599  COUNTRY     -  US
 JV2599  USGS QUAD   -  GAITHERSBURG (2016)
 JV2599
 JV2599                         *CURRENT SURVEY CONTROL
 JV2599  ______________________________________________________________________
 JV2599* NAD 83(1986) POSITION- 39 11 21.     (N) 077 11 08.     (W)   SCALED
 JV2599* NAVD 88 ORTHO HEIGHT -   136.37  (+/-2cm)      447.4   (feet) VERTCON3
 JV2599  ______________________________________________________________________
 JV2599  GEOID HEIGHT    -        -31.766 (meters)                     GEOID18
 JV2599  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2599
 JV2599.The horizontal coordinates were scaled from a map and have
 JV2599.an estimated accuracy of +/- 6 seconds.
 JV2599
 JV2599.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2599.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2599
 JV2599.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2599.GEOID18 height accuracy estimate available here.
 JV2599
 JV2599.The vertical order pertains to the NGVD 29 superseded value.
 JV2599
 JV2599.Click photographs - Photos may exist for this station.
 JV2599
 JV2599;                    North         East    Units  Estimated Accuracy
 JV2599;SPC MD       -   169,020.      383,970.      MT  (+/- 180 meters Scaled)
 JV2599
 JV2599_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ112400(NAD 83)
 JV2599
 JV2599                          SUPERSEDED SURVEY CONTROL
 JV2599
 JV2599  NGVD 29 (11/26/84)  136.577  (m)          448.09   (f) ADJUSTED    2 0
 JV2599
 JV2599.Superseded values are not recommended for survey control.
 JV2599
 JV2599.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2599.See file dsdata.pdf to determine how the superseded data were derived.
 JV2599
 JV2599_MARKER: B = BOLT
 JV2599_SETTING: 66 = SET IN ROCK OUTCROP
 JV2599_STAMPING: 2134
 JV2599_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV2599+STABILITY: POSITION/ELEVATION WELL
 JV2599
 JV2599  HISTORY     - Date     Condition        Report By
 JV2599  HISTORY     - UNK      MONUMENTED       WSSC
 JV2599  HISTORY     - 1946     GOOD             WSSC
 JV2599
 JV2599                          STATION DESCRIPTION
 JV2599
 JV2599'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2599'1.2 MI S FROM GOSHEN.
 JV2599'ABOUT 1.2 MILES SOUTH ALONG THE GOSHEN-GAITHERSBURG ROAD FROM
 JV2599'THE GENERAL STORE AT GOSHEN, MONTGOMERY COUNTY, ABOUT 0.1 MILE
 JV2599'NORTH OF A ROAD INTERSECTION, EAST OF THE ROAD, AND IN THE TOP
 JV2599'OF A LARGE ROCK OUTCROP.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV2599'BRASS BOLT AND COPPER WASHER, STAMPED 2134.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2591 ***********************************************************************
 JV2591  DESIGNATION -  2136 WSSC
 JV2591  PID         -  JV2591
 JV2591  STATE/COUNTY-  MD/MONTGOMERY
 JV2591  COUNTRY     -  US
 JV2591  USGS QUAD   -  WOODBINE (2016)
 JV2591
 JV2591                         *CURRENT SURVEY CONTROL
 JV2591  ______________________________________________________________________
 JV2591* NAD 83(1986) POSITION- 39 15 54.     (N) 077 06 55.     (W)   SCALED
 JV2591* NAVD 88 ORTHO HEIGHT -   132.13  (+/-2cm)      433.5   (feet) VERTCON3
 JV2591  ______________________________________________________________________
 JV2591  GEOID HEIGHT    -        -31.806 (meters)                     GEOID18
 JV2591  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2591
 JV2591.The horizontal coordinates were scaled from a map and have
 JV2591.an estimated accuracy of +/- 6 seconds.
 JV2591
 JV2591.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2591.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2591
 JV2591.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2591.GEOID18 height accuracy estimate available here.
 JV2591
 JV2591.The vertical order pertains to the NGVD 29 superseded value.
 JV2591
 JV2591.Click photographs - Photos may exist for this station.
 JV2591
 JV2591;                    North         East    Units  Estimated Accuracy
 JV2591;SPC MD       -   177,430.      390,050.      MT  (+/- 180 meters Scaled)
 JV2591
 JV2591_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ175483(NAD 83)
 JV2591
 JV2591                          SUPERSEDED SURVEY CONTROL
 JV2591
 JV2591  NGVD 29 (11/26/84)  132.330  (m)          434.15   (f) ADJUSTED    2 0
 JV2591
 JV2591.Superseded values are not recommended for survey control.
 JV2591
 JV2591.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2591.See file dsdata.pdf to determine how the superseded data were derived.
 JV2591
 JV2591_MARKER: B = BOLT
 JV2591_SETTING: 0 = UNSPECIFIED SETTING
 JV2591_SP_SET: IRON PIPE
 JV2591_STAMPING: 2136
 JV2591_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2591
 JV2591  HISTORY     - Date     Condition        Report By
 JV2591  HISTORY     - UNK      MONUMENTED       WSSC
 JV2591  HISTORY     - 1946     GOOD             WSSC
 JV2591
 JV2591                          STATION DESCRIPTION
 JV2591
 JV2591'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2591'1 MI SW FROM HIPSLEYS MILL.
 JV2591'IN MONTGOMERY COUNTY, ABOUT 1 MILE SOUTHWEST ALONG THE DIASY-ETCHISON
 JV2591'ROAD FROM HIPSLEYS MILL, HOWARD COUNTY, ABOUT 1500 FEET SOUTHWEST
 JV2591'OF THE BRIDGE OVER PATUXENT RIVER AT THE MONTGOMERY-HOWARD COUNTY
 JV2591'LINE, 58.8 FEET SOUTH OF A 24-INCH POPLAR TREE, 36.5 FEET SOUTHEAST
 JV2591'OF THE CENTER LINE OF THE ROAD, AT THE EDGE OF A WOODS, AND 15
 JV2591'FEET NORTHEAST OF A 10-INCH OAK TREE.  A WASHINGTON SUBURBAN
 JV2591'SANITARY DISTRICT BRASS BOLT AND WASHER, STAMPED 2136 AND SET
 JV2591'IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2583 ***********************************************************************
 JV2583  DESIGNATION -  2144 WSSC
 JV2583  PID         -  JV2583
 JV2583  STATE/COUNTY-  MD/HOWARD
 JV2583  COUNTRY     -  US
 JV2583  USGS QUAD   -  WOODBINE (2016)
 JV2583
 JV2583                         *CURRENT SURVEY CONTROL
 JV2583  ______________________________________________________________________
 JV2583* NAD 83(1986) POSITION- 39 17 12.     (N) 077 05 37.     (W)   SCALED
 JV2583* NAVD 88 ORTHO HEIGHT -   174.20  (+/-2cm)      571.5   (feet) VERTCON3
 JV2583  ______________________________________________________________________
 JV2583  GEOID HEIGHT    -        -31.823 (meters)                     GEOID18
 JV2583  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2583
 JV2583.The horizontal coordinates were scaled from a map and have
 JV2583.an estimated accuracy of +/- 6 seconds.
 JV2583
 JV2583.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2583.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2583
 JV2583.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2583.GEOID18 height accuracy estimate available here.
 JV2583
 JV2583.The vertical order pertains to the NGVD 29 superseded value.
 JV2583
 JV2583.Click photographs - Photos may exist for this station.
 JV2583
 JV2583;                    North         East    Units  Estimated Accuracy
 JV2583;SPC MD       -   179,830.      391,920.      MT  (+/- 180 meters Scaled)
 JV2583
 JV2583_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ194506(NAD 83)
 JV2583
 JV2583                          SUPERSEDED SURVEY CONTROL
 JV2583
 JV2583  NGVD 29 (11/26/84)  174.402  (m)          572.18   (f) ADJUSTED    2 0
 JV2583
 JV2583.Superseded values are not recommended for survey control.
 JV2583
 JV2583.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2583.See file dsdata.pdf to determine how the superseded data were derived.
 JV2583
 JV2583_MARKER: B = BOLT
 JV2583_SETTING: 0 = UNSPECIFIED SETTING
 JV2583_SP_SET: IRON PIPE
 JV2583_STAMPING: 2144
 JV2583_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2583
 JV2583  HISTORY     - Date     Condition        Report By
 JV2583  HISTORY     - UNK      MONUMENTED       WSSC
 JV2583  HISTORY     - 1946     GOOD             WSSC
 JV2583
 JV2583                          STATION DESCRIPTION
 JV2583
 JV2583'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2583'1.5 MI SW FROM DAISY.
 JV2583'ABOUT 1.5 MILES SOUTHWEST ALONG THE DIASY-ETCHISON ROAD FROM
 JV2583'DAISY, HOWARD COUNTY, 85 FEET NORTH OF THE JUNCTION OF THE
 JV2583'FLORENCE-ROXBURY MILLS ROAD, 49.5 FEET SOUTH OF THE CENTER LINE
 JV2583'OF THE FLORENCE-ROXBURY MILLS ROAD, 44 FEET EAST OF A 30-INCH
 JV2583'OAK TREE, AND 28.5 FEET SOUTHEAST OF ANOTHER 30-INCH OAK TREE.
 JV2583'A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS BOLT AND WAHSER,
 JV2583'STAMPED 2144 AND SET IN THE TOP OF A CONCRETE-FILLED IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2574 ***********************************************************************
 JV2574  DESIGNATION -  2147 WSSC
 JV2574  PID         -  JV2574
 JV2574  STATE/COUNTY-  MD/HOWARD
 JV2574  COUNTRY     -  US
 JV2574  USGS QUAD   -  WOODBINE (2016)
 JV2574
 JV2574                         *CURRENT SURVEY CONTROL
 JV2574  ______________________________________________________________________
 JV2574* NAD 83(1986) POSITION- 39 17 08.     (N) 077 02 18.     (W)   SCALED
 JV2574* NAVD 88 ORTHO HEIGHT -   146.22  (+/-2cm)      479.7   (feet) VERTCON3
 JV2574  ______________________________________________________________________
 JV2574  GEOID HEIGHT    -        -31.859 (meters)                     GEOID18
 JV2574  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2574
 JV2574.The horizontal coordinates were scaled from a map and have
 JV2574.an estimated accuracy of +/- 6 seconds.
 JV2574
 JV2574.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2574.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2574
 JV2574.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2574.GEOID18 height accuracy estimate available here.
 JV2574
 JV2574.The vertical order pertains to the NGVD 29 superseded value.
 JV2574
 JV2574.Click photographs - Photos may exist for this station.
 JV2574
 JV2574;                    North         East    Units  Estimated Accuracy
 JV2574;SPC MD       -   179,710.      396,690.      MT  (+/- 180 meters Scaled)
 JV2574
 JV2574_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ242504(NAD 83)
 JV2574
 JV2574                          SUPERSEDED SURVEY CONTROL
 JV2574
 JV2574  NGVD 29 (11/26/84)  146.433  (m)          480.42   (f) ADJUSTED    2 0
 JV2574
 JV2574.Superseded values are not recommended for survey control.
 JV2574
 JV2574.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2574.See file dsdata.pdf to determine how the superseded data were derived.
 JV2574
 JV2574_MARKER: B = BOLT
 JV2574_SETTING: 66 = SET IN ROCK OUTCROP
 JV2574_STAMPING: 2147
 JV2574_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV2574+STABILITY: POSITION/ELEVATION WELL
 JV2574
 JV2574  HISTORY     - Date     Condition        Report By
 JV2574  HISTORY     - UNK      MONUMENTED       WSSC
 JV2574  HISTORY     - 1946     GOOD             WSSC
 JV2574
 JV2574                          STATION DESCRIPTION
 JV2574
 JV2574'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2574'0.4 MI S FROM GLENWOOD.
 JV2574'ABOUT 0.4 MILE SOUTH ALONG THE SUNSHINE-GLENWOOD ROAD (STATE
 JV2574'HIGHWAY 97) FROM THE POST OFFICE AT GLENWOOD, HOWARD COUNTY,
 JV2574'THENCE ABOUT 0.5 MILE WEST ALONG THE OLD ABANDONED GLENWOOD-DAISY
 JV2574'ROAD, ABOUT 350 FEET SOUTH OF LITTLE CATTAIL CREEK, 29.9 FEET
 JV2574'SOUTHWEST OF A 24-INCH OAK TREE, 24.1 FEET EAST OF A 40-INCH
 JV2574'OAK TREE, 21.8 FEET SOUTHWEST OF ANOTHER 24-INCH OAK TREE, AND IN
 JV2574'THE TOP OF A ROCK OUTCROP.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV2574'BRASS BOLT AND COPPER WASHER, STAMPED 2147.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2771 ***********************************************************************
 JV2771  DESIGNATION -  2148 A WSSC
 JV2771  PID         -  JV2771
 JV2771  STATE/COUNTY-  MD/MONTGOMERY
 JV2771  COUNTRY     -  US
 JV2771  USGS QUAD   -  SANDY SPRING (2016)
 JV2771
 JV2771                         *CURRENT SURVEY CONTROL
 JV2771  ______________________________________________________________________
 JV2771* NAD 83(1986) POSITION- 39 13 00.     (N) 077 06 37.     (W)   SCALED
 JV2771* NAVD 88 ORTHO HEIGHT -   152.14  (+/-2cm)      499.1   (feet) VERTCON3
 JV2771  ______________________________________________________________________
 JV2771  GEOID HEIGHT    -        -31.783 (meters)                     GEOID18
 JV2771  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2771
 JV2771.The horizontal coordinates were scaled from a map and have
 JV2771.an estimated accuracy of +/- 6 seconds.
 JV2771
 JV2771.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2771.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2771
 JV2771.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2771.GEOID18 height accuracy estimate available here.
 JV2771
 JV2771.The vertical order pertains to the NGVD 29 superseded value.
 JV2771
 JV2771.Click photographs - Photos may exist for this station.
 JV2771
 JV2771;                    North         East    Units  Estimated Accuracy
 JV2771;SPC MD       -   172,070.      390,480.      MT  (+/- 180 meters Scaled)
 JV2771
 JV2771_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ178429(NAD 83)
 JV2771
 JV2771                          SUPERSEDED SURVEY CONTROL
 JV2771
 JV2771  NGVD 29 (11/26/84)  152.340  (m)          499.80   (f) ADJUSTED    2 0
 JV2771
 JV2771.Superseded values are not recommended for survey control.
 JV2771
 JV2771.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2771.See file dsdata.pdf to determine how the superseded data were derived.
 JV2771
 JV2771_MARKER: Z = SEE DESCRIPTION
 JV2771_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2771_SP_SET: TREE
 JV2771_STAMPING: WSSC 2148 A
 JV2771_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2771
 JV2771  HISTORY     - Date     Condition        Report By
 JV2771  HISTORY     - UNK      MONUMENTED       WSSC
 JV2771  HISTORY     - 1939     GOOD             WSSC
 JV2771
 JV2771                          STATION DESCRIPTION
 JV2771
 JV2771'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2771'1.8 MI E FROM LAYTONSVILLE.
 JV2771'ON STATE HIGHWAY 701, 2.3 MILES WEST OF UNITY, 0.4 MILE WEST
 JV2771'OF HAWLINGS RIVER, ON THE NORTH SIDE OF THE ROAD, AND IN THE
 JV2771'NORTH SIDE OF A 40-INCH SYCAMORE TREE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2770 ***********************************************************************
 JV2770  DESIGNATION -  2148 WSSC
 JV2770  PID         -  JV2770
 JV2770  STATE/COUNTY-  MD/MONTGOMERY
 JV2770  COUNTRY     -  US
 JV2770  USGS QUAD   -  SANDY SPRING (2016)
 JV2770
 JV2770                         *CURRENT SURVEY CONTROL
 JV2770  ______________________________________________________________________
 JV2770* NAD 83(1986) POSITION- 39 13 03.     (N) 077 06 22.     (W)   SCALED
 JV2770* NAVD 88 ORTHO HEIGHT -   139.37  (+/-2cm)      457.2   (feet) VERTCON3
 JV2770  ______________________________________________________________________
 JV2770  GEOID HEIGHT    -        -31.786 (meters)                     GEOID18
 JV2770  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2770
 JV2770.The horizontal coordinates were scaled from a map and have
 JV2770.an estimated accuracy of +/- 6 seconds.
 JV2770
 JV2770.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2770.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2770
 JV2770.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2770.GEOID18 height accuracy estimate available here.
 JV2770
 JV2770.The vertical order pertains to the NGVD 29 superseded value.
 JV2770
 JV2770.Click photographs - Photos may exist for this station.
 JV2770
 JV2770;                    North         East    Units  Estimated Accuracy
 JV2770;SPC MD       -   172,160.      390,840.      MT  (+/- 180 meters Scaled)
 JV2770
 JV2770_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ181430(NAD 83)
 JV2770
 JV2770                          SUPERSEDED SURVEY CONTROL
 JV2770
 JV2770  NGVD 29 (11/26/84)  139.565  (m)          457.89   (f) ADJUSTED    2 0
 JV2770
 JV2770.Superseded values are not recommended for survey control.
 JV2770
 JV2770.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2770.See file dsdata.pdf to determine how the superseded data were derived.
 JV2770
 JV2770_MARKER: B = BOLT
 JV2770_SETTING: 65 = SET IN UNSPECIFIED ROCK OR BOULDER
 JV2770_SP_SET: UNSPECIFIED ROCK
 JV2770_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2770
 JV2770  HISTORY     - Date     Condition        Report By
 JV2770  HISTORY     - UNK      MONUMENTED       WSSC
 JV2770  HISTORY     - 1939     GOOD             WSSC
 JV2770
 JV2770                          STATION DESCRIPTION
 JV2770
 JV2770'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2770'2 MI W FROM UNITY.
 JV2770'ON THE LAYTONSVILLE ROAD (STATE HIGHWAY 701), 150 FEET WEST OF
 JV2770'A BRIDGE OVER HAWLINGS RIVER, 45 FEET NORTH OF THE CENTERLINE
 JV2770'OF THE ROAD, AND IN THE WEST END OF A LARGE FLAT ROCK ON THE
 JV2770'SOUTH BANK OF THE RIVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1426 ***********************************************************************
 HV1426  DESIGNATION -  2152 WSSC
 HV1426  PID         -  HV1426
 HV1426  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1426  COUNTRY     -  US
 HV1426  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1426
 HV1426                         *CURRENT SURVEY CONTROL
 HV1426  ______________________________________________________________________
 HV1426* NAD 83(1986) POSITION- 38 59 34.     (N) 076 59 11.     (W)   SCALED
 HV1426* NAVD 88 ORTHO HEIGHT -    53.65  (+/-2cm)      176.0   (feet) VERTCON3
 HV1426  ______________________________________________________________________
 HV1426  GEOID HEIGHT    -        -32.036 (meters)                     GEOID18
 HV1426  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1426
 HV1426.The horizontal coordinates were scaled from a map and have
 HV1426.an estimated accuracy of +/- 6 seconds.
 HV1426
 HV1426.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1426.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1426
 HV1426.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1426.GEOID18 height accuracy estimate available here.
 HV1426
 HV1426.The vertical order pertains to the NGVD 29 superseded value.
 HV1426
 HV1426.Click photographs - Photos may exist for this station.
 HV1426
 HV1426;                    North         East    Units  Estimated Accuracy
 HV1426;SPC MD       -   147,210.      401,180.      MT  (+/- 180 meters Scaled)
 HV1426
 HV1426_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ279178(NAD 83)
 HV1426
 HV1426                          SUPERSEDED SURVEY CONTROL
 HV1426
 HV1426  NGVD 29 (11/26/84)   53.863  (m)          176.72   (f) ADJUSTED    2 0
 HV1426
 HV1426.Superseded values are not recommended for survey control.
 HV1426
 HV1426.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1426.See file dsdata.pdf to determine how the superseded data were derived.
 HV1426
 HV1426_MARKER: Z = SEE DESCRIPTION
 HV1426_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1426_SP_SET: CULVERT
 HV1426_STAMPING: WSSC 2152
 HV1426_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1426
 HV1426  HISTORY     - Date     Condition        Report By
 HV1426  HISTORY     - UNK      MONUMENTED       WSSC
 HV1426  HISTORY     - 1939     GOOD             WSSC
 HV1426
 HV1426                          STATION DESCRIPTION
 HV1426
 HV1426'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1426'AT LANGLEY PARK.
 HV1426'ON NEW HAMPSHIRE AVENUE, 0.3 MILE NORTH OF THE INTERSECTION OF
 HV1426'UNIVERSITY LANE, AT A CULVERT UNDER THE AVENUE, AND IN THE TOP
 HV1426'OF THE WEST HEADWALL. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2602 ***********************************************************************
 JV2602  DESIGNATION -  2155 WSSC
 JV2602  PID         -  JV2602
 JV2602  STATE/COUNTY-  MD/MONTGOMERY
 JV2602  COUNTRY     -  US
 JV2602  USGS QUAD   -  GAITHERSBURG (2016)
 JV2602
 JV2602                         *CURRENT SURVEY CONTROL
 JV2602  ______________________________________________________________________
 JV2602* NAD 83(1986) POSITION- 39 09 27.     (N) 077 11 31.     (W)   SCALED
 JV2602* NAVD 88 ORTHO HEIGHT -   118.14  (+/-2cm)      387.6   (feet) VERTCON3
 JV2602  ______________________________________________________________________
 JV2602  GEOID HEIGHT    -        -31.747 (meters)                     GEOID18
 JV2602  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2602
 JV2602.The horizontal coordinates were scaled from a map and have
 JV2602.an estimated accuracy of +/- 6 seconds.
 JV2602
 JV2602.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2602.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2602
 JV2602.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2602.GEOID18 height accuracy estimate available here.
 JV2602
 JV2602.The vertical order pertains to the NGVD 29 superseded value.
 JV2602
 JV2602.Click photographs - Photos may exist for this station.
 JV2602
 JV2602;                    North         East    Units  Estimated Accuracy
 JV2602;SPC MD       -   165,510.      383,410.      MT  (+/- 180 meters Scaled)
 JV2602
 JV2602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ106365(NAD 83)
 JV2602
 JV2602                          SUPERSEDED SURVEY CONTROL
 JV2602
 JV2602  NGVD 29 (11/26/84)  118.348  (m)          388.28   (f) ADJUSTED    2 0
 JV2602
 JV2602.Superseded values are not recommended for survey control.
 JV2602
 JV2602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2602.See file dsdata.pdf to determine how the superseded data were derived.
 JV2602
 JV2602_MARKER: B = BOLT
 JV2602_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2602_SP_SET: BRIDGE
 JV2602_STAMPING: 2155
 JV2602_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2602
 JV2602  HISTORY     - Date     Condition        Report By
 JV2602  HISTORY     - UNK      MONUMENTED       WSSC
 JV2602  HISTORY     - 1946     GOOD             WSSC
 JV2602
 JV2602                          STATION DESCRIPTION
 JV2602
 JV2602'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2602'1.1 MI N FROM GAITHERSBURG.
 JV2602'ABOUT 1.1 MILES NORTH ALONG THE GOSHEN-GAITHERSBURG ROAD FROM
 JV2602'GAITHERSBURG, MONTGOMERY COUNTY, AT A CONCRETE BRIDGE OVER WHETSTONE
 JV2602'RUN, AND IN THE TOP OF THE EAST END OF THE SOUTH ABUTMENT.
 JV2602'A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS BOLT AND COPPER
 JV2602'WASHER, STAMPED 2155.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1361 ***********************************************************************
 HV1361  DESIGNATION -  2159 WSSC
 HV1361  PID         -  HV1361
 HV1361  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1361  COUNTRY     -  US
 HV1361  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1361
 HV1361                         *CURRENT SURVEY CONTROL
 HV1361  ______________________________________________________________________
 HV1361* NAD 83(1986) POSITION- 38 56 24.     (N) 076 58 11.     (W)   SCALED
 HV1361* NAVD 88 ORTHO HEIGHT -    43.90  (+/-2cm)      144.0   (feet) VERTCON3
 HV1361  ______________________________________________________________________
 HV1361  GEOID HEIGHT    -        -32.111 (meters)                     GEOID18
 HV1361  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1361
 HV1361.The horizontal coordinates were scaled from a map and have
 HV1361.an estimated accuracy of +/- 6 seconds.
 HV1361
 HV1361.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1361.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1361
 HV1361.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1361.GEOID18 height accuracy estimate available here.
 HV1361
 HV1361.The vertical order pertains to the NGVD 29 superseded value.
 HV1361
 HV1361.Click photographs - Photos may exist for this station.
 HV1361
 HV1361;                    North         East    Units  Estimated Accuracy
 HV1361;SPC MD       -   141,350.      402,630.      MT  (+/- 180 meters Scaled)
 HV1361
 HV1361_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ292119(NAD 83)
 HV1361
 HV1361                          SUPERSEDED SURVEY CONTROL
 HV1361
 HV1361  NGVD 29 (11/26/84)   44.128  (m)          144.78   (f) ADJUSTED    2 0
 HV1361
 HV1361.Superseded values are not recommended for survey control.
 HV1361
 HV1361.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1361.See file dsdata.pdf to determine how the superseded data were derived.
 HV1361
 HV1361_MARKER: B = BOLT
 HV1361_SETTING: 0 = UNSPECIFIED SETTING
 HV1361_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1361
 HV1361  HISTORY     - Date     Condition        Report By
 HV1361  HISTORY     - UNK      MONUMENTED       WSSC
 HV1361  HISTORY     - 1944     GOOD             WSSC
 HV1361
 HV1361                          STATION DESCRIPTION
 HV1361
 HV1361'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1361'AT MT RAINIER.
 HV1361'AT THE NORTHEAST CORNER OF THE INTERSECTION OF EASTERN AVENUE
 HV1361'AND RUSSELL AVENUE, ABOUT 200 FEET EAST OF THE TOP OF A HILL,
 HV1361'39.6 FEET NORTH OF THE CENTERLINE OF EASTERN AVENUE, AND 27.7
 HV1361'FEET EAST OF THE CENTERLINE OF RUSSELL AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2855 ***********************************************************************
 JV2855  DESIGNATION -  2162
 JV2855  PID         -  JV2855
 JV2855  STATE/COUNTY-  MD/MONTGOMERY
 JV2855  COUNTRY     -  US
 JV2855  USGS QUAD   -  ROCKVILLE (2016)
 JV2855
 JV2855                         *CURRENT SURVEY CONTROL
 JV2855  ______________________________________________________________________
 JV2855* NAD 83(1986) POSITION- 39 00 30.9    (N) 077 13 16.6    (W)   HD_HELD2
 JV2855* NAVD 88 ORTHO HEIGHT -    97.080 (meters)      318.50  (feet) ADJUSTED
 JV2855  ______________________________________________________________________
 JV2855  GEOID HEIGHT    -        -31.718 (meters)                     GEOID18
 JV2855  DYNAMIC HEIGHT  -         97.030 (meters)      318.34  (feet) COMP
 JV2855  MODELED GRAVITY -    980,108.7   (mgal)                       NAVD 88
 JV2855
 JV2855  VERT ORDER      -  SECOND    CLASS I
 JV2855
 JV2855.The horizontal coordinates were established by autonomous hand held GPS
 JV2855.observations and have an estimated accuracy of +/- 10 meters.
 JV2855
 JV2855.The orthometric height was determined by differential leveling and
 JV2855.adjusted by the NATIONAL GEODETIC SURVEY
 JV2855.in June 1991.
 JV2855
 JV2855.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2855.GEOID18 height accuracy estimate available here.
 JV2855
 JV2855.Click photographs - Photos may exist for this station.
 JV2855
 JV2855.The dynamic height is computed by dividing the NAVD 88
 JV2855.geopotential number by the normal gravity value computed on the
 JV2855.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2855.degrees latitude (g = 980.6199 gals.).
 JV2855
 JV2855.The modeled gravity was interpolated from observed gravity values.
 JV2855
 JV2855;                    North         East    Units  Estimated Accuracy
 JV2855;SPC MD       -   148,982.      380,835.      MT  (+/- 10 meters HH2 GPS)
 JV2855
 JV2855_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0766820076(NAD 83)
 JV2855
 JV2855                          SUPERSEDED SURVEY CONTROL
 JV2855
 JV2855  NGVD 29 (11/26/84)   97.315  (m)          319.27   (f) ADJUSTED    2 0
 JV2855
 JV2855.Superseded values are not recommended for survey control.
 JV2855
 JV2855.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2855.See file dsdata.pdf to determine how the superseded data were derived.
 JV2855
 JV2855_MARKER: R = RIVET
 JV2855_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2855_SP_SET: BRIDGE WINGWALL
 JV2855_MARK LOGO: NONE
 JV2855_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2855_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2855_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2855+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2009
 JV2855
 JV2855  HISTORY     - Date     Condition        Report By
 JV2855  HISTORY     - UNK      MONUMENTED       WSSC
 JV2855  HISTORY     - 1966     GOOD             WSSC
 JV2855  HISTORY     - 20010817 GOOD             MDSHA
 JV2855  HISTORY     - 20090329 GOOD             NGS
 JV2855
 JV2855                          STATION DESCRIPTION
 JV2855
 JV2855'DESCRIBED BY WASH SUBURB SAN COMM 1966
 JV2855'1 MI SW FROM POTOMAC.
 JV2855'0.95 MI. S.W. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 JV2855'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC IN THE
 JV2855'E. CORNER OF THE BRIDGE OVER A SMALL STREAM.
 JV2855
 JV2855                          STATION RECOVERY (2001)
 JV2855
 JV2855'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2855'RECOVERED AS DESCRIBED.
 JV2855
 JV2855                          STATION RECOVERY (2009)
 JV2855
 JV2855'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV2855'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1058 ***********************************************************************
 JV1058  DESIGNATION -  2169 B WSSC
 JV1058  PID         -  JV1058
 JV1058  STATE/COUNTY-  MD/MONTGOMERY
 JV1058  COUNTRY     -  US
 JV1058  USGS QUAD   -  BELTSVILLE (2016)
 JV1058
 JV1058                         *CURRENT SURVEY CONTROL
 JV1058  ______________________________________________________________________
 JV1058* NAD 83(1986) POSITION- 39 07 17.     (N) 076 59 06.     (W)   SCALED
 JV1058* NAVD 88 ORTHO HEIGHT -   172.42  (+/-2cm)      565.7   (feet) VERTCON3
 JV1058  ______________________________________________________________________
 JV1058  GEOID HEIGHT    -        -31.973 (meters)                     GEOID18
 JV1058  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1058
 JV1058.The horizontal coordinates were scaled from a map and have
 JV1058.an estimated accuracy of +/- 6 seconds.
 JV1058
 JV1058.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1058.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1058
 JV1058.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1058.GEOID18 height accuracy estimate available here.
 JV1058
 JV1058.The vertical order pertains to the NGVD 29 superseded value.
 JV1058
 JV1058.Click photographs - Photos may exist for this station.
 JV1058
 JV1058;                    North         East    Units  Estimated Accuracy
 JV1058;SPC MD       -   161,480.      401,300.      MT  (+/- 180 meters Scaled)
 JV1058
 JV1058_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ284321(NAD 83)
 JV1058
 JV1058                          SUPERSEDED SURVEY CONTROL
 JV1058
 JV1058  NGVD 29 (11/26/84)  172.628  (m)          566.36   (f) ADJUSTED    2 0
 JV1058
 JV1058.Superseded values are not recommended for survey control.
 JV1058
 JV1058.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1058.See file dsdata.pdf to determine how the superseded data were derived.
 JV1058
 JV1058_MARKER: Z = SEE DESCRIPTION
 JV1058_SETTING: 0 = UNSPECIFIED SETTING
 JV1058_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1058
 JV1058  HISTORY     - Date     Condition        Report By
 JV1058  HISTORY     - UNK      MONUMENTED       WSSC
 JV1058  HISTORY     - 1939     SEE DESCRIPTION  WSSC
 JV1058
 JV1058                          STATION DESCRIPTION
 JV1058
 JV1058'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1058'1 MI W FROM SPENCERVILLE.
 JV1058'NO DESCRIPTION AVAILABLE.  THE CHARACTER OF THIS MARK IS UNKNOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0619 ***********************************************************************
 HV0619  DESIGNATION -  217
 HV0619  PID         -  HV0619
 HV0619  STATE/COUNTY-  MD/CHARLES
 HV0619  COUNTRY     -  US
 HV0619  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV0619
 HV0619                         *CURRENT SURVEY CONTROL
 HV0619  ______________________________________________________________________
 HV0619* NAD 83(1986) POSITION- 38 22 12.     (N) 076 57 40.     (W)   SCALED
 HV0619* NAVD 88 ORTHO HEIGHT -    24.465 (meters)       80.27  (feet) ADJUSTED
 HV0619  ______________________________________________________________________
 HV0619  GEOID HEIGHT    -        -33.446 (meters)                     GEOID18
 HV0619  DYNAMIC HEIGHT  -         24.450 (meters)       80.22  (feet) COMP
 HV0619  MODELED GRAVITY -    980,005.6   (mgal)                       NAVD 88
 HV0619
 HV0619  VERT ORDER      -  FIRST     CLASS II
 HV0619
 HV0619.The horizontal coordinates were scaled from a map and have
 HV0619.an estimated accuracy of +/- 6 seconds.
 HV0619
 HV0619.The orthometric height was determined by differential leveling and
 HV0619.adjusted by the NATIONAL GEODETIC SURVEY
 HV0619.in June 1991.
 HV0619
 HV0619.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0619.GEOID18 height accuracy estimate available here.
 HV0619
 HV0619.Click photographs - Photos may exist for this station.
 HV0619
 HV0619.The dynamic height is computed by dividing the NAVD 88
 HV0619.geopotential number by the normal gravity value computed on the
 HV0619.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0619.degrees latitude (g = 980.6199 gals.).
 HV0619
 HV0619.The modeled gravity was interpolated from observed gravity values.
 HV0619
 HV0619;                    North         East    Units  Estimated Accuracy
 HV0619;SPC MD       -    78,070.      403,400.      MT  (+/- 180 meters Scaled)
 HV0619
 HV0619_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH286486(NAD 83)
 HV0619
 HV0619                          SUPERSEDED SURVEY CONTROL
 HV0619
 HV0619  NGVD 29 (11/26/84)   24.708  (m)           81.06   (f) ADJUSTED    1 2
 HV0619
 HV0619.Superseded values are not recommended for survey control.
 HV0619
 HV0619.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0619.See file dsdata.pdf to determine how the superseded data were derived.
 HV0619
 HV0619_MARKER: DD = SURVEY DISK
 HV0619_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0619_SP_SET: CULVERT
 HV0619_STAMPING: 81 217 MLS 1967
 HV0619_MARK LOGO: USGS
 HV0619_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0619
 HV0619  HISTORY     - Date     Condition        Report By
 HV0619  HISTORY     - 1967     MONUMENTED       USGS
 HV0619  HISTORY     - 1971     GOOD             NGS
 HV0619
 HV0619                          STATION DESCRIPTION
 HV0619
 HV0619'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0619'1 MI SW FROM NEWBURG.
 HV0619'ABOUT 0.2 MILE NORTHWEST ALONG STATE HIGHWAY 257 FROM THE POST
 HV0619'OFFICE AT NEWBURG, THENCE 0.75 MILE SOUTHWEST ALONG U.S. HIGHWAY
 HV0619'301, ABOUT 0.15 MILE SOUTHWEST OF THE MAIN ENTRANCE TO THE
 HV0619'CLIFTON ESTATES, 40.7 FEET NORTHWEST OF THE CENTER LINE OF THE
 HV0619'NORTHBOUND LANE OF THE HIGHWAY, 36 FEET SOUTHEAST OF THE CENTER
 HV0619'LINE OF THE SOUTHBOUND LANE OF THE HIGHWAY, 31 FEET SOUTHWEST OF
 HV0619'THE CENTER LINE OF A PAVED CROSSOVER, SET ON THE TOP OF THE
 HV0619'SOUTHWEST CONCRETE HEADWALL FOR A PIPE CULVERT UNDER THE
 HV0619'CROSSOVER AND ABOUT LEVEL WITH THE NORTHBOUND LANE OF THE
 HV0619'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0622 ***********************************************************************
 HV0622  DESIGNATION -  218
 HV0622  PID         -  HV0622
 HV0622  STATE/COUNTY-  MD/CHARLES
 HV0622  COUNTRY     -  US
 HV0622  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV0622
 HV0622                         *CURRENT SURVEY CONTROL
 HV0622  ______________________________________________________________________
 HV0622* NAD 83(1986) POSITION- 38 21 52.     (N) 076 58 38.     (W)   SCALED
 HV0622* NAVD 88 ORTHO HEIGHT -     8.358 (meters)       27.42  (feet) ADJUSTED
 HV0622  ______________________________________________________________________
 HV0622  GEOID HEIGHT    -        -33.424 (meters)                     GEOID18
 HV0622  DYNAMIC HEIGHT  -          8.352 (meters)       27.40  (feet) COMP
 HV0622  MODELED GRAVITY -    980,005.7   (mgal)                       NAVD 88
 HV0622
 HV0622  VERT ORDER      -  FIRST     CLASS II
 HV0622
 HV0622.The horizontal coordinates were scaled from a map and have
 HV0622.an estimated accuracy of +/- 6 seconds.
 HV0622
 HV0622.The orthometric height was determined by differential leveling and
 HV0622.adjusted by the NATIONAL GEODETIC SURVEY
 HV0622.in June 1991.
 HV0622
 HV0622.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0622.GEOID18 height accuracy estimate available here.
 HV0622
 HV0622.Click photographs - Photos may exist for this station.
 HV0622
 HV0622.The dynamic height is computed by dividing the NAVD 88
 HV0622.geopotential number by the normal gravity value computed on the
 HV0622.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0622.degrees latitude (g = 980.6199 gals.).
 HV0622
 HV0622.The modeled gravity was interpolated from observed gravity values.
 HV0622
 HV0622;                    North         East    Units  Estimated Accuracy
 HV0622;SPC MD       -    77,460.      401,990.      MT  (+/- 180 meters Scaled)
 HV0622
 HV0622_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH272481(NAD 83)
 HV0622
 HV0622                          SUPERSEDED SURVEY CONTROL
 HV0622
 HV0622  NGVD 29 (11/26/84)    8.601  (m)           28.22   (f) ADJUSTED    1 2
 HV0622
 HV0622.Superseded values are not recommended for survey control.
 HV0622
 HV0622.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0622.See file dsdata.pdf to determine how the superseded data were derived.
 HV0622
 HV0622_MARKER: DD = SURVEY DISK
 HV0622_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0622_SP_SET: STEP
 HV0622_STAMPING: 28 218 MLS 1967
 HV0622_MARK LOGO: USGS
 HV0622_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0622
 HV0622  HISTORY     - Date     Condition        Report By
 HV0622  HISTORY     - 1967     MONUMENTED       USGS
 HV0622  HISTORY     - 1971     GOOD             NGS
 HV0622
 HV0622                          STATION DESCRIPTION
 HV0622
 HV0622'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0622'2 MI SW FROM NEWBURG.
 HV0622'ABOUT 0.2 MILE NORTHWEST ALONG STATE HIGHWAY 257 FROM THE POST
 HV0622'OFFICE AT NEWBURG, THENCE 1.75 MILES SOUTHWEST ALONG U.S. HIGHWAY
 HV0622'301, NEAR THE TOLL HOUSE FOR THE HARRY W NICE HIGHWAY BRIDGE OVER
 HV0622'THE POTOMAC RIVER, SET IN THE TOP OF THE WEST CONCRETE WALL OF
 HV0622'THE STEP TO THE MAIN ENTRANCE TO THE TOLL HOUSE, 3 FEET WEST OF
 HV0622'THE CENTER OF THE STEP, 45 FEET NORTH OF THE FIRST TOLL BOOTH SOUTH
 HV0622'OF THE HOUSE AND 2 FEET ABOVE THE LEVEL OF THE SIDEWALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1550 ***********************************************************************
 JV1550  DESIGNATION -  22
 JV1550  PID         -  JV1550
 JV1550  STATE/COUNTY-  MD/BALTIMORE
 JV1550  COUNTRY     -  US
 JV1550  USGS QUAD   -  HEREFORD (2016)
 JV1550
 JV1550                         *CURRENT SURVEY CONTROL
 JV1550  ______________________________________________________________________
 JV1550* NAD 83(1986) POSITION- 39 32 21.     (N) 076 38 18.     (W)   SCALED
 JV1550* NAVD 88 ORTHO HEIGHT -    77.413 (meters)      253.98  (feet) ADJUSTED
 JV1550  ______________________________________________________________________
 JV1550  GEOID HEIGHT    -        -32.354 (meters)                     GEOID18
 JV1550  DYNAMIC HEIGHT  -         77.375 (meters)      253.85  (feet) COMP
 JV1550  MODELED GRAVITY -    980,125.1   (mgal)                       NAVD 88
 JV1550
 JV1550  VERT ORDER      -  SECOND    CLASS I
 JV1550
 JV1550.The horizontal coordinates were scaled from a map and have
 JV1550.an estimated accuracy of +/- 6 seconds.
 JV1550
 JV1550.The orthometric height was determined by differential leveling and
 JV1550.adjusted by the NATIONAL GEODETIC SURVEY
 JV1550.in November 2003.
 JV1550
 JV1550.No vertical observational check was made to the station.
 JV1550
 JV1550.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1550.GEOID18 height accuracy estimate available here.
 JV1550
 JV1550.Click photographs - Photos may exist for this station.
 JV1550
 JV1550.The dynamic height is computed by dividing the NAVD 88
 JV1550.geopotential number by the normal gravity value computed on the
 JV1550.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1550.degrees latitude (g = 980.6199 gals.).
 JV1550
 JV1550.The modeled gravity was interpolated from observed gravity values.
 JV1550
 JV1550;                    North         East    Units  Estimated Accuracy
 JV1550;SPC MD       -   207,930.      431,090.      MT  (+/- 180 meters Scaled)
 JV1550
 JV1550_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ592778(NAD 83)
 JV1550
 JV1550                          SUPERSEDED SURVEY CONTROL
 JV1550
 JV1550  NAVD 88 (06/15/91)   77.395  (m)          253.92   (f) SUPERSEDED  2 0
 JV1550  NGVD 29 (11/26/84)   77.593  (m)          254.57   (f) ADJUSTED    2 0
 JV1550
 JV1550.Superseded values are not recommended for survey control.
 JV1550
 JV1550.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1550.See file dsdata.pdf to determine how the superseded data were derived.
 JV1550
 JV1550_MARKER: B = BOLT
 JV1550_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1550_SP_SET: STONE BRIDGE ABUTMENT
 JV1550_MARK LOGO: NONE
 JV1550_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1550_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1550_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1550+SATELLITE: SATELLITE OBSERVATIONS - August 27, 2001
 JV1550
 JV1550  HISTORY     - Date     Condition        Report By
 JV1550  HISTORY     - UNK      MONUMENTED       PRR
 JV1550  HISTORY     - 1959     GOOD             CGS
 JV1550  HISTORY     - 20010827 GOOD             MDSHA
 JV1550
 JV1550                          STATION DESCRIPTION
 JV1550
 JV1550'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1550'AT SPARKS.
 JV1550'AT SPARKS, ALONG THE PENNSYLVANIA RAILROAD, ON TOP AND NEAR THE
 JV1550'CENTER OF THE WEST STONE ABUTMENT OF BRIDGE NO. 19.52 UNDER THE
 JV1550'TRACKS, 201 FEET SOUTH OF THE CENTER LINE OF THE SPARKS ROAD
 JV1550'CROSSING, 5 FEET WEST OF THE WEST RAIL AND ABOUT 1 FOOT BELOW
 JV1550'THE LEVEL OF THE TRACK.
 JV1550
 JV1550                          STATION RECOVERY (2001)
 JV1550
 JV1550'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1550'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0527 ***********************************************************************
 HU0527  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0527  DESIGNATION -  22
 HU0527  PID         -  HU0527
 HU0527  STATE/COUNTY-  MD/WICOMICO
 HU0527  COUNTRY     -  US
 HU0527  USGS QUAD   -  SALISBURY (2016)
 HU0527
 HU0527                         *CURRENT SURVEY CONTROL
 HU0527  ______________________________________________________________________
 HU0527* NAD 83(1986) POSITION- 38 21 57.9    (N) 075 36 00.0    (W)   HD_HELD2
 HU0527* NAVD 88 ORTHO HEIGHT -     6.723 (meters)       22.06  (feet) ADJUSTED
 HU0527  ______________________________________________________________________
 HU0527  GEOID HEIGHT    -        -35.817 (meters)                     GEOID18
 HU0527  DYNAMIC HEIGHT  -          6.719 (meters)       22.04  (feet) COMP
 HU0527  MODELED GRAVITY -    980,005.5   (mgal)                       NAVD 88
 HU0527
 HU0527  VERT ORDER      -  FIRST     CLASS I
 HU0527
 HU0527.The horizontal coordinates were established by autonomous hand held GPS
 HU0527.observations and have an estimated accuracy of +/- 10 meters.
 HU0527
 HU0527.The orthometric height was determined by differential leveling and
 HU0527.adjusted by the NATIONAL GEODETIC SURVEY
 HU0527.in June 1991.
 HU0527
 HU0527.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0527.GEOID18 height accuracy estimate available here.
 HU0527
 HU0527.This Tidal Bench Mark is designated as VM 15536
 HU0527.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0527
 HU0527.Click photographs - Photos may exist for this station.
 HU0527
 HU0527.The dynamic height is computed by dividing the NAVD 88
 HU0527.geopotential number by the normal gravity value computed on the
 HU0527.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0527.degrees latitude (g = 980.6199 gals.).
 HU0527
 HU0527.The modeled gravity was interpolated from observed gravity values.
 HU0527
 HU0527;                    North         East    Units  Estimated Accuracy
 HU0527;SPC MD       -    78,576.      522,346.      MT  (+/- 10 meters HH2 GPS)
 HU0527
 HU0527_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4758446604(NAD 83)
 HU0527
 HU0527                          SUPERSEDED SURVEY CONTROL
 HU0527
 HU0527  NGVD 29 (06/12/91)    6.979  (m)           22.90   (f) ADJUSTED    1 1
 HU0527  NGVD 29 (??/??/87)    6.966  (m)           22.85   (f) SUPERSEDED  1 1
 HU0527
 HU0527.Superseded values are not recommended for survey control.
 HU0527
 HU0527.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0527.See file dsdata.pdf to determine how the superseded data were derived.
 HU0527
 HU0527_MARKER: DB = BENCH MARK DISK
 HU0527_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 HU0527_SP_SET: FOUNDATION WALL
 HU0527_STAMPING: 22 BALTO 1900 MARYLAND
 HU0527_MARK LOGO: USGS
 HU0527_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 HU0527+STABILITY: POSITION/ELEVATION WELL
 HU0527_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0527+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2017
 HU0527
 HU0527  HISTORY     - Date     Condition        Report By
 HU0527  HISTORY     - 1900     MONUMENTED       USGS
 HU0527  HISTORY     - 1971     GOOD             NGS
 HU0527  HISTORY     - 1972     GOOD             NGS
 HU0527  HISTORY     - 19891207 GOOD             NGS
 HU0527  HISTORY     - 20011117 GOOD             USPSQD
 HU0527  HISTORY     - 20050907 GOOD             GEOCAC
 HU0527  HISTORY     - 20170330 GOOD             PROFLN
 HU0527
 HU0527                          STATION DESCRIPTION
 HU0527
 HU0527'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0527'AT SALISBURY.
 HU0527'AT SALISBURY, AT THE NORTHWEST CORNER OF THE COURTHOUSE BUILDING,
 HU0527'SET VERTICALLY IN THE WEST FACE OF THE STONE LEDGE, 0.5 FOOT SOUTH
 HU0527'OF THE NORTHWEST CORNER OF THE BUILDING AND 2.3 FEET ABOVE THE LEVEL
 HU0527'OF THE GROUND.
 HU0527
 HU0527                          STATION RECOVERY (1972)
 HU0527
 HU0527'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0527'RECOVERED IN GOOD CONDITION.
 HU0527
 HU0527                          STATION RECOVERY (1989)
 HU0527
 HU0527'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU0527'IN SALISBURY, AT THE INTERSECTION OF MAIN AND DIVISION STREETS, SET
 HU0527'VERTICALLY IN THE WEST FACE OF THE WATER TABLE OF THE COURTHOUSE, 0.7
 HU0527'M (2.30 FT) ABOVE THE GROUND SURFACE, AND 0.2 M (0.66 FT) SOUTH OF
 HU0527'THE NORTHWEST CORNER OF THE BUILDING.
 HU0527
 HU0527                          STATION RECOVERY (2001)
 HU0527
 HU0527'RECOVERY NOTE BY US POWER SQUADRON 2001 (GVS)
 HU0527'RECOVERED AS DESCRIBED
 HU0527
 HU0527                          STATION RECOVERY (2005)
 HU0527
 HU0527'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0527'RECOVERED IN GOOD CONDITION.
 HU0527
 HU0527                          STATION RECOVERY (2017)
 HU0527
 HU0527'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU0527'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7823 ***********************************************************************
 DR7823  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7823  DESIGNATION -  22
 DR7823  PID         -  DR7823
 DR7823  STATE/COUNTY-  MD/QUEEN ANNES
 DR7823  COUNTRY     -  US
 DR7823  USGS QUAD   -  CENTREVILLE (2017)
 DR7823
 DR7823                         *CURRENT SURVEY CONTROL
 DR7823  ______________________________________________________________________
 DR7823* NAD 83(2011) POSITION- 39 00 07.74098(N) 076 00 03.09330(W)   ADJUSTED
 DR7823* NAD 83(2011) ELLIP HT-   -10.513 (meters)        (02/02/22)   ADJUSTED
 DR7823* NAD 83(2011) EPOCH   -  2010.00
 DR7823* NAVD 88 ORTHO HEIGHT -    23.62  (meters)       77.5   (feet) GPS OBS
 DR7823  ______________________________________________________________________
 DR7823  GEOID HEIGHT    -        -34.134 (meters)                     GEOID18
 DR7823  NAD 83(2011) X  -  1,200,627.017 (meters)                     COMP
 DR7823  NAD 83(2011) Y  - -4,815,759.615 (meters)                     COMP
 DR7823  NAD 83(2011) Z  -  3,992,495.919 (meters)                     COMP
 DR7823  LAPLACE CORR    -         -4.20  (seconds)                    DEFLEC18
 DR7823
 DR7823  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7823  Standards:
 DR7823         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7823            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7823  -------------------------------------------------------------------
 DR7823  NETWORK    0.75   1.72           0.33   0.28   0.88     -0.12228220
 DR7823  -------------------------------------------------------------------
 DR7823  Click here for local accuracies and other accuracy information.
 DR7823
 DR7823.The horizontal coordinates were established by GPS observations
 DR7823.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7823
 DR7823.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7823.been affixed to the stable North American tectonic plate. See 
 DR7823.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7823
 DR7823.The horizontal coordinates are valid at the epoch date displayed above
 DR7823.which is a decimal equivalence of Year/Month/Day.
 DR7823
 DR7823.The orthometric height was determined by GPS observations and a
 DR7823.high-resolution geoid model using precise GPS observation and
 DR7823.processing techniques.
 DR7823
 DR7823.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7823.GEOID18 height accuracy estimate available here.
 DR7823
 DR7823.Click photographs - Photos may exist for this station.
 DR7823
 DR7823.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7823
 DR7823.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7823
 DR7823.The ellipsoidal height was determined by GPS observations
 DR7823.and is referenced to NAD 83.
 DR7823
 DR7823. The following values were computed from the NAD 83(2011) position.
 DR7823
 DR7823;                    North         East     Units Scale Factor Converg.
 DR7823;SPC MD       -   148,718.519   486,543.492   MT  0.99995227   +0 37 37.5
 DR7823;SPC MD       -   487,920.67  1,596,268.11   sFT  0.99995227   +0 37 37.5
 DR7823;UTM  18      - 4,317,491.608   413,335.539   MT  0.99969248   -0 37 47.7
 DR7823
 DR7823!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7823!SPC MD       -   1.00000165  x   0.99995227  =   0.99995392
 DR7823!UTM  18      -   1.00000165  x   0.99969248  =   0.99969413
 DR7823
 DR7823_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1333517491(NAD 83)
 DR7823
 DR7823                          SUPERSEDED SURVEY CONTROL
 DR7823
 DR7823.No superseded survey control is available for this station.
 DR7823
 DR7823_MARKER: DD = SURVEY DISK
 DR7823_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7823_STAMPING: 22
 DR7823_MARK LOGO: MD-035
 DR7823_PROJECTION: RECESSED 9 CENTIMETERS
 DR7823_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7823+STABILITY: SURFACE MOTION
 DR7823_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7823+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7823
 DR7823  HISTORY     - Date     Condition        Report By
 DR7823  HISTORY     - UNK      MONUMENTED       MD-035
 DR7823  HISTORY     - 20210309 GOOD             MDSHA
 DR7823
 DR7823                          STATION DESCRIPTION
 DR7823
 DR7823'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7823'THE MARK IS LOCATED ABOUT 4.5 MI (7.2 KM) SOUTHEAST OF CENTREVILLE,
 DR7823'2.3 MI (3.7 KM) WEST OF RUTHSBURG AND 1.7 MI (2.7 KM) NORTH-NORTHEAST
 DR7823'OF STARR.
 DR7823'
 DR7823'TO REACH FROM THE JUNCTION OF MD 213 AND US 301, GO EAST ON US 301 FOR
 DR7823'1.53 MI (2.46 KM) TO AN INTERSECTION.  TURN RIGHT AND GO SOUTH ON
 DR7823'ROLLING BRIDGE ROAD FOR 0.48 MI (0.77 KM) TO AN INTERSECTION.  TURN
 DR7823'LEFT AND GO SOUTH-SOUTHEAST ON ROLLING BRIDGE ROAD FOR 0.36 MI (0.58
 DR7823'KM) TO AN INTERSECTION.  BEAR LEFT AND GO EAST ON BACK STARR ROAD FOR
 DR7823'0.76 MI (1.22 KM) TO AN INTERSECTION.  TURN LEFT AND GO EAST-NORTHEAST
 DR7823'ON LITTLE EAGLE ROAD FOR 1.68 MI (2.70 KM) TO THE MARK ON THE LEFT.
 DR7823'
 DR7823'THE MARK IS 200.3 FT (61.1 M) WEST-NORTHWEST OF UTILITY POLE NUMBERED
 DR7823'307-86-37, 51.6 FT (15.7 M) NORTH OF UTILITY POLE NUMBERED 317-86-38,
 DR7823'27.8 FT (8.5 M) NORTH OF THE CENTERLINE OF LITTLE EAGLE ROAD, 26.5 FT
 DR7823'(8.1 M) SOUTH-SOUTHEAST OF A WOODEN POST FOR A GRAVEL FARM LANE GATE
 DR7823'AND SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7025 ***********************************************************************
 JV7025  DESIGNATION -  22 44 005
 JV7025  PID         -  JV7025
 JV7025  STATE/COUNTY-  MD/HOWARD
 JV7025  COUNTRY     -  US
 JV7025  USGS QUAD   -  SAVAGE (2016)
 JV7025
 JV7025                         *CURRENT SURVEY CONTROL
 JV7025  ______________________________________________________________________
 JV7025* NAD 83(2011) POSITION- 39 09 55.76248(N) 076 47 27.97997(W)   ADJUSTED
 JV7025* NAD 83(2011) ELLIP HT-    33.717 (meters)        (06/27/12)   ADJUSTED
 JV7025* NAD 83(2011) EPOCH   -  2010.00
 JV7025* NAVD 88 ORTHO HEIGHT -    66.1   (meters)      217.    (feet) GPS OBS
 JV7025  ______________________________________________________________________
 JV7025  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7025  GEOID HEIGHT    -        -32.334 (meters)                     GEOID99
 JV7025  GEOID HEIGHT    -        -32.353 (meters)                     GEOID18
 JV7025  NAD 83(2011) X  -  1,131,489.570 (meters)                     COMP
 JV7025  NAD 83(2011) Y  - -4,820,764.086 (meters)                     COMP
 JV7025  NAD 83(2011) Z  -  4,006,599.455 (meters)                     COMP
 JV7025  LAPLACE CORR    -         -5.44  (seconds)                    DEFLEC18
 JV7025
 JV7025  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7025  Standards:
 JV7025         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7025            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7025  -------------------------------------------------------------------
 JV7025  NETWORK    0.96   1.18           0.42   0.36   0.60     -0.10381321
 JV7025  -------------------------------------------------------------------
 JV7025  Click here for local accuracies and other accuracy information.
 JV7025
 JV7025.The horizontal coordinates were established by GPS observations
 JV7025.and adjusted by the National Geodetic Survey in June 2012.
 JV7025
 JV7025.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7025.been affixed to the stable North American tectonic plate. See 
 JV7025.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7025
 JV7025.The horizontal coordinates are valid at the epoch date displayed above
 JV7025.which is a decimal equivalence of Year/Month/Day.
 JV7025
 JV7025.The orthometric height was determined by GPS observations and a
 JV7025.high-resolution geoid model.
 JV7025
 JV7025.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7025.GEOID18 height accuracy estimate available here.
 JV7025
 JV7025.Click photographs - Photos may exist for this station.
 JV7025
 JV7025.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7025
 JV7025.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7025
 JV7025.The ellipsoidal height was determined by GPS observations
 JV7025.and is referenced to NAD 83.
 JV7025
 JV7025. The following values were computed from the NAD 83(2011) position.
 JV7025
 JV7025;                    North         East     Units Scale Factor Converg.
 JV7025;SPC MD       -   166,398.234   418,052.855   MT  0.99996260   +0 07 52.0
 JV7025;SPC MD       -   545,924.87  1,371,561.74   sFT  0.99996260   +0 07 52.0
 JV7025;UTM  18      - 4,336,669.181   345,261.809   MT  0.99989483   -1 07 53.1
 JV7025
 JV7025!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7025!SPC MD       -   0.99999471  x   0.99996260  =   0.99995731
 JV7025!UTM  18      -   0.99999471  x   0.99989483  =   0.99988954
 JV7025
 JV7025_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4526136669(NAD 83)
 JV7025
 JV7025                          SUPERSEDED SURVEY CONTROL
 JV7025
 JV7025  NAD 83(2007)-  39 09 55.76276(N)    076 47 27.98116(W) AD(2002.00) 0
 JV7025  ELLIP H (02/10/07)   33.742  (m)                       GP(2002.00)    
 JV7025  ELLIP H (08/30/02)   33.737  (m)                       GP(       ) 4 2
 JV7025  NAD 83(1991)-  39 09 55.76264(N)    076 47 27.98094(W) AD(       ) 1
 JV7025  ELLIP H (02/23/93)   33.677  (m)                       GP(       ) 4 2
 JV7025  NGVD 29 (02/23/93)   66.3    (m)  GEOID90  model used  GPS OBS        
 JV7025
 JV7025.Superseded values are not recommended for survey control.
 JV7025
 JV7025.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7025.See file dsdata.pdf to determine how the superseded data were derived.
 JV7025
 JV7025_MARKER: DD = SURVEY DISK
 JV7025_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7025_STAMPING: 2244005 1974
 JV7025_MARK LOGO: MD-027
 JV7025_PROJECTION: RECESSED 15 CENTIMETERS
 JV7025_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7025_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7025+STABILITY: SURFACE MOTION
 JV7025_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7025+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7025
 JV7025  HISTORY     - Date     Condition        Report By
 JV7025  HISTORY     - 1974     MONUMENTED       MD-027
 JV7025  HISTORY     - 19901125 GOOD             MD-027
 JV7025  HISTORY     - 19910415 GOOD
 JV7025  HISTORY     - 19970414 GOOD             DMW
 JV7025  HISTORY     - 19981013 GOOD             DMW
 JV7025  HISTORY     - 20000915 GOOD             MD-027
 JV7025
 JV7025                          STATION DESCRIPTION
 JV7025
 JV7025'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7025'THE STATION IS LOCATED ABOUT 11.9 KM (7.40 MI) NORTHWEST OF ODENTON
 JV7025'AND 8.2 KM (5.10 MI) SOUTHWEST OF ELKRIDGE. OWNERSHIP-- STATE HIGHWAY
 JV7025'1 RIGHT-OF-WAY.
 JV7025'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 1 AND STATE
 JV7025'HIGHWAY 175 LOCATED IN WATERLOO, GO 0.8 KM (0.50 MI) SOUTHWEST ON
 JV7025'U.S.HIGHWAY 1 TO THE STATION ON THE RIGHT. AT THE NORTHWEST CORNER OF
 JV7025'HICS ROAD.
 JV7025'THE STATION LIES 8.6 M (28.2 FT) EAST FROM AN X-CUT ON A FIRE HYDRANT,
 JV7025'5 M (16.4 FT) SOUTH FROM THE FACE OF A LARGE STEEL SIGN POLE FOR
 JV7025'BARKSDALE LIQUOR STORE, 3.4 M (11.2 FT) NORTHWEST FROM THE EDGE OF
 JV7025'SOUTHBOUND U.S. HIGHWAY 1 AND 0.5 M (1.6 FT) SOUTHWEST FROM A HOWARD
 JV7025'COUNTY WITNESS POST.
 JV7025'STATION IS A STANDARD HOWARD COUNTY SURVEY DISC, SET ON TOP OF A 20 CM
 JV7025'DIAMETER ROUND CONCRETE MONUMENT, RECESSED 15 CM FROM THE GROUND, IT
 JV7025'IS STAMPED 2244005 1974.
 JV7025'COMMENT--NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV7025'INCLUDED IN THIS GPS SURVEY PROJECT.
 JV7025
 JV7025                          STATION RECOVERY (1991)
 JV7025
 JV7025'RECOVERED 1991
 JV7025'RECOVERED IN GOOD CONDITION.
 JV7025
 JV7025                          STATION RECOVERY (1997)
 JV7025
 JV7025'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV7025'RECOVERED AS DESCRIBED.
 JV7025
 JV7025                          STATION RECOVERY (1998)
 JV7025
 JV7025'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 JV7025'RECOVERED IN GOOD CONDITION.
 JV7025
 JV7025                          STATION RECOVERY (2000)
 JV7025
 JV7025'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7025'REPORT  BY HOWARD COUNTY 2000 RECVOVERED AS DESCRIBED IN  GOOD
 JV7025'CONDITION
 JV7025'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0644 ***********************************************************************
 JV0644  DESIGNATION -  22 BORR
 JV0644  PID         -  JV0644
 JV0644  STATE/COUNTY-  MD/HOWARD
 JV0644  COUNTRY     -  US
 JV0644  USGS QUAD   -  SAVAGE (2016)
 JV0644
 JV0644                         *CURRENT SURVEY CONTROL
 JV0644  ______________________________________________________________________
 JV0644* NAD 83(1986) POSITION- 39 07 32.     (N) 076 47 23.     (W)   SCALED
 JV0644* NAVD 88 ORTHO HEIGHT -    52.950 (meters)      173.72  (feet) ADJUSTED
 JV0644  ______________________________________________________________________
 JV0644  GEOID HEIGHT    -        -32.392 (meters)                     GEOID18
 JV0644  DYNAMIC HEIGHT  -         52.922 (meters)      173.63  (feet) COMP
 JV0644  MODELED GRAVITY -    980,096.8   (mgal)                       NAVD 88
 JV0644
 JV0644  VERT ORDER      -  FIRST     CLASS I
 JV0644
 JV0644.The horizontal coordinates were scaled from a map and have
 JV0644.an estimated accuracy of +/- 6 seconds.
 JV0644
 JV0644.The orthometric height was determined by differential leveling and
 JV0644.adjusted by the NATIONAL GEODETIC SURVEY
 JV0644.in June 1991.
 JV0644
 JV0644.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0644.GEOID18 height accuracy estimate available here.
 JV0644
 JV0644.Click photographs - Photos may exist for this station.
 JV0644
 JV0644.The dynamic height is computed by dividing the NAVD 88
 JV0644.geopotential number by the normal gravity value computed on the
 JV0644.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0644.degrees latitude (g = 980.6199 gals.).
 JV0644
 JV0644.The modeled gravity was interpolated from observed gravity values.
 JV0644
 JV0644;                    North         East    Units  Estimated Accuracy
 JV0644;SPC MD       -   161,970.      418,180.      MT  (+/- 180 meters Scaled)
 JV0644
 JV0644_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ452322(NAD 83)
 JV0644
 JV0644                          SUPERSEDED SURVEY CONTROL
 JV0644
 JV0644  NGVD 29 (11/26/84)   53.183  (m)          174.48   (f) ADJUSTED    1 1
 JV0644
 JV0644.Superseded values are not recommended for survey control.
 JV0644
 JV0644.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0644.See file dsdata.pdf to determine how the superseded data were derived.
 JV0644
 JV0644_MARKER: B = BOLT
 JV0644_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0644_SP_SET: WINGWALL
 JV0644_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0644
 JV0644  HISTORY     - Date     Condition        Report By
 JV0644  HISTORY     - 1903     MONUMENTED       BORR
 JV0644  HISTORY     - 1971     GOOD             NGS
 JV0644  HISTORY     - 1973     GOOD             NGS
 JV0644
 JV0644                          STATION DESCRIPTION
 JV0644
 JV0644'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0644'AT FT GEORGE G MEADE JCT.
 JV0644'AT FT. GEORGE G. MEADE JUNCTION, SET IN THE TOP OF THE NORTHEAST
 JV0644'END OF THE NORTHEAST STONE WING WALL ON THE NORTHWEST ABUTMENT
 JV0644'OF THE STATE HIGHWAY 32 OVERPASS FOR THE BALTIMORE AND OHIO
 JV0644'RAILROAD, 9 FEET NORTHWEST OF THE NORTHWEST RAIL OF THE NORTHWEST
 JV0644'TRACK, 0.5 FOOT SOUTHWEST OF THE NORTHEAST END OF THE SECOND
 JV0644'STEP FROM THE BOTTOM OF THE WING WALL, AND ABOUT 4 FEET ABOVE
 JV0644'THE LEVEL OF THE TRACK.
 JV0644
 JV0644                          STATION RECOVERY (1973)
 JV0644
 JV0644'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973
 JV0644'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0231 ***********************************************************************
 HU0231  DESIGNATION -  22.91
 HU0231  PID         -  HU0231
 HU0231  STATE/COUNTY-  MD/WORCESTER
 HU0231  COUNTRY     -  US
 HU0231  USGS QUAD   -  GIRDLETREE (2016)
 HU0231
 HU0231                         *CURRENT SURVEY CONTROL
 HU0231  ______________________________________________________________________
 HU0231* NAD 83(1986) POSITION- 38 06 20.     (N) 075 24 01.     (W)   SCALED
 HU0231* NAVD 88 ORTHO HEIGHT -     6.437 (meters)       21.12  (feet) ADJUSTED
 HU0231  ______________________________________________________________________
 HU0231  GEOID HEIGHT    -        -36.299 (meters)                     GEOID18
 HU0231  DYNAMIC HEIGHT  -          6.432 (meters)       21.10  (feet) COMP
 HU0231  MODELED GRAVITY -    979,976.6   (mgal)                       NAVD 88
 HU0231
 HU0231  VERT ORDER      -  SECOND    CLASS I
 HU0231
 HU0231.The horizontal coordinates were scaled from a map and have
 HU0231.an estimated accuracy of +/- 6 seconds.
 HU0231
 HU0231.The orthometric height was determined by differential leveling and
 HU0231.adjusted by the NATIONAL GEODETIC SURVEY
 HU0231.in June 1991.
 HU0231
 HU0231.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0231.GEOID18 height accuracy estimate available here.
 HU0231
 HU0231.Click photographs - Photos may exist for this station.
 HU0231
 HU0231.The dynamic height is computed by dividing the NAVD 88
 HU0231.geopotential number by the normal gravity value computed on the
 HU0231.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0231.degrees latitude (g = 980.6199 gals.).
 HU0231
 HU0231.The modeled gravity was interpolated from observed gravity values.
 HU0231
 HU0231;                    North         East    Units  Estimated Accuracy
 HU0231;SPC MD       -    49,950.      540,300.      MT  (+/- 180 meters Scaled)
 HU0231
 HU0231_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH649176(NAD 83)
 HU0231
 HU0231                          SUPERSEDED SURVEY CONTROL
 HU0231
 HU0231  NGVD 29 (11/26/84)    6.680  (m)           21.92   (f) ADJUSTED    2 0
 HU0231
 HU0231.Superseded values are not recommended for survey control.
 HU0231
 HU0231.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0231.See file dsdata.pdf to determine how the superseded data were derived.
 HU0231
 HU0231_MARKER: B = BOLT
 HU0231_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU0231_SP_SET: BRIDGE ABUTMENT
 HU0231_MARK LOGO: NONE
 HU0231_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0231_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0231
 HU0231  HISTORY     - Date     Condition        Report By
 HU0231  HISTORY     - UNK      MONUMENTED       PRR
 HU0231  HISTORY     - 1962     GOOD             CGS
 HU0231  HISTORY     - 20010503 GOOD             MDSHA
 HU0231
 HU0231                          STATION DESCRIPTION
 HU0231
 HU0231'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0231'0.8 MI N FROM GIRDLETREE.
 HU0231'0.8 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION AT
 HU0231'GIRDLETREE, WORCESTER COUNTY, AT A 17-FOOT PLATE-GIRDER BRIDGE, ON
 HU0231'THE TOP OF THE EAST END OF THE SOUTH ABUTMENT, 9 FEET EAST OF THE
 HU0231'CENTERLINE OF THE TRACK AND ABOUT 1 FOOT LOWER THAN THE RAIL.  A
 HU0231'COPPER BOLT.  NOTE-- THE TRACK HAS BEEN REMOVED AND THE BRIDGE
 HU0231'TORN DOWN.
 HU0231
 HU0231                          STATION RECOVERY (2001)
 HU0231
 HU0231'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU0231'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1034 ***********************************************************************
 JV1034  DESIGNATION -  2209 WSSC
 JV1034  PID         -  JV1034
 JV1034  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1034  COUNTRY     -  US
 JV1034  USGS QUAD   -  LAUREL (2016)
 JV1034
 JV1034                         *CURRENT SURVEY CONTROL
 JV1034  ______________________________________________________________________
 JV1034* NAD 83(1986) POSITION- 39 05 33.     (N) 076 51 46.     (W)   SCALED
 JV1034* NAVD 88 ORTHO HEIGHT -    57.95  (+/-2cm)      190.1   (feet) VERTCON3
 JV1034  ______________________________________________________________________
 JV1034  GEOID HEIGHT    -        -32.222 (meters)                     GEOID18
 JV1034  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1034
 JV1034.The horizontal coordinates were scaled from a map and have
 JV1034.an estimated accuracy of +/- 6 seconds.
 JV1034
 JV1034.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1034.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1034
 JV1034.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1034.GEOID18 height accuracy estimate available here.
 JV1034
 JV1034.The vertical order pertains to the NGVD 29 superseded value.
 JV1034
 JV1034.Click photographs - Photos may exist for this station.
 JV1034
 JV1034;                    North         East    Units  Estimated Accuracy
 JV1034;SPC MD       -   158,280.      411,870.      MT  (+/- 180 meters Scaled)
 JV1034
 JV1034_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ389286(NAD 83)
 JV1034
 JV1034                          SUPERSEDED SURVEY CONTROL
 JV1034
 JV1034  NGVD 29 (11/26/84)   58.177  (m)          190.87   (f) ADJUSTED    2 0
 JV1034
 JV1034.Superseded values are not recommended for survey control.
 JV1034
 JV1034.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1034.See file dsdata.pdf to determine how the superseded data were derived.
 JV1034
 JV1034_MARKER: Z = SEE DESCRIPTION
 JV1034_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1034_SP_SET: TREE
 JV1034_STAMPING: WSSC 2209
 JV1034_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1034
 JV1034  HISTORY     - Date     Condition        Report By
 JV1034  HISTORY     - UNK      MONUMENTED       WSSC
 JV1034  HISTORY     - 1939     GOOD             WSSC
 JV1034
 JV1034                          STATION DESCRIPTION
 JV1034
 JV1034'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1034'1 MI S FROM LAUREL.
 JV1034'ON CHERRY LANE, 0.4 MILE WEST OF THE JUNCTION OF U.S. HIGHWAY 1,
 JV1034'ON THE NORTH SIDE OF THE ROAD, AND IN THE SOUTHWEST ROOT OF A
 JV1034'30-INCH POPLAR TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1036 ***********************************************************************
 JV1036  DESIGNATION -  2210 WSSC
 JV1036  PID         -  JV1036
 JV1036  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1036  COUNTRY     -  US
 JV1036  USGS QUAD   -  BELTSVILLE (2016)
 JV1036
 JV1036                         *CURRENT SURVEY CONTROL
 JV1036  ______________________________________________________________________
 JV1036* NAD 83(1986) POSITION- 39 05 45.     (N) 076 53 06.     (W)   SCALED
 JV1036* NAVD 88 ORTHO HEIGHT -    95.36  (+/-2cm)      312.9   (feet) VERTCON3
 JV1036  ______________________________________________________________________
 JV1036  GEOID HEIGHT    -        -32.168 (meters)                     GEOID18
 JV1036  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1036
 JV1036.The horizontal coordinates were scaled from a map and have
 JV1036.an estimated accuracy of +/- 6 seconds.
 JV1036
 JV1036.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1036.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1036
 JV1036.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1036.GEOID18 height accuracy estimate available here.
 JV1036
 JV1036.The vertical order pertains to the NGVD 29 superseded value.
 JV1036
 JV1036.Click photographs - Photos may exist for this station.
 JV1036
 JV1036;                    North         East    Units  Estimated Accuracy
 JV1036;SPC MD       -   158,650.      409,950.      MT  (+/- 180 meters Scaled)
 JV1036
 JV1036_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ369291(NAD 83)
 JV1036
 JV1036                          SUPERSEDED SURVEY CONTROL
 JV1036
 JV1036  NGVD 29 (11/26/84)   95.570  (m)          313.55   (f) ADJUSTED    2 0
 JV1036
 JV1036.Superseded values are not recommended for survey control.
 JV1036
 JV1036.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1036.See file dsdata.pdf to determine how the superseded data were derived.
 JV1036
 JV1036_MARKER: Z = SEE DESCRIPTION
 JV1036_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1036_SP_SET: TREE
 JV1036_STAMPING: WSSC 2210
 JV1036_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1036
 JV1036  HISTORY     - Date     Condition        Report By
 JV1036  HISTORY     - UNK      MONUMENTED       WSSC
 JV1036  HISTORY     - 1939     GOOD             WSSC
 JV1036
 JV1036                          STATION DESCRIPTION
 JV1036
 JV1036'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1036'0.4 MI SE FROM WILLIS SCHOOL.
 JV1036'ON CHERRY LANE, 150 FEET EAST OF THE INTERSECTION OF A ROAD TO
 JV1036'WILLIS SCHOOL, ON THE NORTH SIDE OF THE ROAD, AND IN THE
 JV1036'SOUTHWEST ROOT OF A 14-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1040 ***********************************************************************
 JV1040  DESIGNATION -  2211 WSSC
 JV1040  PID         -  JV1040
 JV1040  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1040  COUNTRY     -  US
 JV1040  USGS QUAD   -  BELTSVILLE (2016)
 JV1040
 JV1040                         *CURRENT SURVEY CONTROL
 JV1040  ______________________________________________________________________
 JV1040* NAD 83(1986) POSITION- 39 05 56.     (N) 076 53 40.     (W)   SCALED
 JV1040* NAVD 88 ORTHO HEIGHT -   116.066 (meters)      380.79  (feet) ADJUSTED
 JV1040  ______________________________________________________________________
 JV1040  GEOID HEIGHT    -        -32.146 (meters)                     GEOID18
 JV1040  DYNAMIC HEIGHT  -        116.004 (meters)      380.59  (feet) COMP
 JV1040  MODELED GRAVITY -    980,091.2   (mgal)                       NAVD 88
 JV1040
 JV1040  VERT ORDER      -  SECOND    CLASS 0
 JV1040
 JV1040.The horizontal coordinates were scaled from a map and have
 JV1040.an estimated accuracy of +/- 6 seconds.
 JV1040
 JV1040.The orthometric height was determined by differential leveling and
 JV1040.adjusted by the NATIONAL GEODETIC SURVEY
 JV1040.in June 1991.
 JV1040
 JV1040.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1040.GEOID18 height accuracy estimate available here.
 JV1040
 JV1040.Click photographs - Photos may exist for this station.
 JV1040
 JV1040.The dynamic height is computed by dividing the NAVD 88
 JV1040.geopotential number by the normal gravity value computed on the
 JV1040.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1040.degrees latitude (g = 980.6199 gals.).
 JV1040
 JV1040.The modeled gravity was interpolated from observed gravity values.
 JV1040
 JV1040;                    North         East    Units  Estimated Accuracy
 JV1040;SPC MD       -   158,990.      409,130.      MT  (+/- 180 meters Scaled)
 JV1040
 JV1040_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ361294(NAD 83)
 JV1040
 JV1040                          SUPERSEDED SURVEY CONTROL
 JV1040
 JV1040  NGVD 29 (11/26/84)  116.278  (m)          381.49   (f) ADJUSTED    2 0
 JV1040
 JV1040.Superseded values are not recommended for survey control.
 JV1040
 JV1040.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1040.See file dsdata.pdf to determine how the superseded data were derived.
 JV1040
 JV1040_MARKER: Q = CHISELED SQUARE
 JV1040_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1040_SP_SET: HEADWALL
 JV1040_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1040
 JV1040  HISTORY     - Date     Condition        Report By
 JV1040  HISTORY     - UNK      MONUMENTED       WSSC
 JV1040  HISTORY     - 1939     GOOD             WSSC
 JV1040
 JV1040                          STATION DESCRIPTION
 JV1040
 JV1040'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1040'0.3 MI W FROM WILLIS SCHOOL.
 JV1040'ON SANDY SPRING ROAD, 0.4 MILE EAST OF A POWER-LINE CROSSING, NEAR
 JV1040'THE JUNCTION OF A DIRT ROAD LEADING NORTH, ON THE SOUTH SIDE OF
 JV1040'THE ROAD, AND ON THE CENTER OF THE TOP OF A CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1041 ***********************************************************************
 JV1041  DESIGNATION -  2212 WSSC
 JV1041  PID         -  JV1041
 JV1041  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1041  COUNTRY     -  US
 JV1041  USGS QUAD   -  BELTSVILLE (2016)
 JV1041
 JV1041                         *CURRENT SURVEY CONTROL
 JV1041  ______________________________________________________________________
 JV1041* NAD 83(1986) POSITION- 39 05 57.     (N) 076 54 07.     (W)   SCALED
 JV1041* NAVD 88 ORTHO HEIGHT -   121.17  (+/-2cm)      397.5   (feet) VERTCON3
 JV1041  ______________________________________________________________________
 JV1041  GEOID HEIGHT    -        -32.130 (meters)                     GEOID18
 JV1041  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1041
 JV1041.The horizontal coordinates were scaled from a map and have
 JV1041.an estimated accuracy of +/- 6 seconds.
 JV1041
 JV1041.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1041.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1041
 JV1041.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1041.GEOID18 height accuracy estimate available here.
 JV1041
 JV1041.The vertical order pertains to the NGVD 29 superseded value.
 JV1041
 JV1041.Click photographs - Photos may exist for this station.
 JV1041
 JV1041;                    North         East    Units  Estimated Accuracy
 JV1041;SPC MD       -   159,020.      408,480.      MT  (+/- 180 meters Scaled)
 JV1041
 JV1041_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ355295(NAD 83)
 JV1041
 JV1041                          SUPERSEDED SURVEY CONTROL
 JV1041
 JV1041  NGVD 29 (11/26/84)  121.376  (m)          398.21   (f) ADJUSTED    2 0
 JV1041
 JV1041.Superseded values are not recommended for survey control.
 JV1041
 JV1041.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1041.See file dsdata.pdf to determine how the superseded data were derived.
 JV1041
 JV1041_MARKER: B = BOLT
 JV1041_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1041_SP_SET: TOWER
 JV1041_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1041
 JV1041  HISTORY     - Date     Condition        Report By
 JV1041  HISTORY     - UNK      MONUMENTED       WSSC
 JV1041  HISTORY     - 1939     GOOD             WSSC
 JV1041
 JV1041                          STATION DESCRIPTION
 JV1041
 JV1041'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1041'0.7 MI W FROM WILLIS SCHOOL.
 JV1041'ON SANDY SPRING ROAD, 0.5 MILE EAST OF THE PRINCE GEORGES-MONTGOMERY
 JV1041'COUNTY LINE, 0.2 MILE EAST OF FURNACE ROAD, AT A POWER-LINE
 JV1041'CROSSING, ON THE NORTH SIDE OF THE ROAD, AT A STEEL TOWER, AND
 JV1041'IN THE SOUTHEAST LEG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1044 ***********************************************************************
 JV1044  DESIGNATION -  2213 WSSC
 JV1044  PID         -  JV1044
 JV1044  STATE/COUNTY-  MD/MONTGOMERY
 JV1044  COUNTRY     -  US
 JV1044  USGS QUAD   -  BELTSVILLE (2016)
 JV1044
 JV1044                         *CURRENT SURVEY CONTROL
 JV1044  ______________________________________________________________________
 JV1044* NAD 83(1986) POSITION- 39 06 19.     (N) 076 54 38.     (W)   SCALED
 JV1044* NAVD 88 ORTHO HEIGHT -   131.22  (+/-2cm)      430.5   (feet) VERTCON3
 JV1044  ______________________________________________________________________
 JV1044  GEOID HEIGHT    -        -32.110 (meters)                     GEOID18
 JV1044  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1044
 JV1044.The horizontal coordinates were scaled from a map and have
 JV1044.an estimated accuracy of +/- 6 seconds.
 JV1044
 JV1044.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1044.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1044
 JV1044.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1044.GEOID18 height accuracy estimate available here.
 JV1044
 JV1044.The vertical order pertains to the NGVD 29 superseded value.
 JV1044
 JV1044.Click photographs - Photos may exist for this station.
 JV1044
 JV1044;                    North         East    Units  Estimated Accuracy
 JV1044;SPC MD       -   159,700.      407,740.      MT  (+/- 180 meters Scaled)
 JV1044
 JV1044_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ348301(NAD 83)
 JV1044
 JV1044                          SUPERSEDED SURVEY CONTROL
 JV1044
 JV1044  NGVD 29 (11/26/84)  131.430  (m)          431.20   (f) ADJUSTED    2 0
 JV1044
 JV1044.Superseded values are not recommended for survey control.
 JV1044
 JV1044.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1044.See file dsdata.pdf to determine how the superseded data were derived.
 JV1044
 JV1044_MARKER: Z = SEE DESCRIPTION
 JV1044_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1044_SP_SET: TREE
 JV1044_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1044
 JV1044  HISTORY     - Date     Condition        Report By
 JV1044  HISTORY     - UNK      MONUMENTED       WSSC
 JV1044  HISTORY     - 1939     GOOD             WSSC
 JV1044
 JV1044                          STATION DESCRIPTION
 JV1044
 JV1044'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1044'1.4 MI SE FROM BURTONSVILLE.
 JV1044'ON SANDY SPRING ROAD, 0.15 MILE WEST OF THE MONTGOMERY-PRINCE
 JV1044'GEORGES COUNTY LINE, ON THE NORTH SIDE OF THE ROAD, AT THE
 JV1044'JUNCTION OF TWO ROADS FORMING A V WITH THE MAIN ROAD, AND IN
 JV1044'THE SOUTHEAST SIDE OF A 30-INCH OAK TREE ON THE NORTHWEST SIDE
 JV1044'OF THE ROAD LEADING NORTHEAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1049 ***********************************************************************
 JV1049  DESIGNATION -  2216 WSSC
 JV1049  PID         -  JV1049
 JV1049  STATE/COUNTY-  MD/MONTGOMERY
 JV1049  COUNTRY     -  US
 JV1049  USGS QUAD   -  BELTSVILLE (2016)
 JV1049
 JV1049                         *CURRENT SURVEY CONTROL
 JV1049  ______________________________________________________________________
 JV1049* NAD 83(1986) POSITION- 39 06 30.     (N) 076 56 46.     (W)   SCALED
 JV1049* NAVD 88 ORTHO HEIGHT -   151.73  (+/-2cm)      497.8   (feet) VERTCON3
 JV1049  ______________________________________________________________________
 JV1049  GEOID HEIGHT    -        -32.044 (meters)                     GEOID18
 JV1049  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1049
 JV1049.The horizontal coordinates were scaled from a map and have
 JV1049.an estimated accuracy of +/- 6 seconds.
 JV1049
 JV1049.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1049.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1049
 JV1049.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1049.GEOID18 height accuracy estimate available here.
 JV1049
 JV1049.The vertical order pertains to the NGVD 29 superseded value.
 JV1049
 JV1049.Click photographs - Photos may exist for this station.
 JV1049
 JV1049;                    North         East    Units  Estimated Accuracy
 JV1049;SPC MD       -   160,030.      404,660.      MT  (+/- 180 meters Scaled)
 JV1049
 JV1049_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ317306(NAD 83)
 JV1049
 JV1049                          SUPERSEDED SURVEY CONTROL
 JV1049
 JV1049  NGVD 29 (11/26/84)  151.933  (m)          498.47   (f) ADJUSTED    2 0
 JV1049
 JV1049.Superseded values are not recommended for survey control.
 JV1049
 JV1049.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1049.See file dsdata.pdf to determine how the superseded data were derived.
 JV1049
 JV1049_MARKER: Z = SEE DESCRIPTION
 JV1049_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1049_SP_SET: TREE
 JV1049_STAMPING: WSSC 2216
 JV1049_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1049
 JV1049  HISTORY     - Date     Condition        Report By
 JV1049  HISTORY     - UNK      MONUMENTED       WSSC
 JV1049  HISTORY     - 1939     GOOD             WSSC
 JV1049
 JV1049                          STATION DESCRIPTION
 JV1049
 JV1049'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1049'0.4 MI W FROM BURTONSVILLE.
 JV1049'ON SANDY SPRING ROAD, JUST WEST OF A DRIVE LEADING SOUTH TO A
 JV1049'HOUSE, ON THE SOUTH SIDE OF THE MAIN ROAD, AND IN THE NORTH ROOT
 JV1049'OF A 18-INCH CEDAR TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1051 ***********************************************************************
 JV1051  DESIGNATION -  2217 WSSC
 JV1051  PID         -  JV1051
 JV1051  STATE/COUNTY-  MD/MONTGOMERY
 JV1051  COUNTRY     -  US
 JV1051  USGS QUAD   -  BELTSVILLE (2016)
 JV1051
 JV1051                         *CURRENT SURVEY CONTROL
 JV1051  ______________________________________________________________________
 JV1051* NAD 83(1986) POSITION- 39 06 42.     (N) 076 57 14.     (W)   SCALED
 JV1051* NAVD 88 ORTHO HEIGHT -   139.39  (+/-2cm)      457.3   (feet) VERTCON3
 JV1051  ______________________________________________________________________
 JV1051  GEOID HEIGHT    -        -32.030 (meters)                     GEOID18
 JV1051  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1051
 JV1051.The horizontal coordinates were scaled from a map and have
 JV1051.an estimated accuracy of +/- 6 seconds.
 JV1051
 JV1051.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1051.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1051
 JV1051.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1051.GEOID18 height accuracy estimate available here.
 JV1051
 JV1051.The vertical order pertains to the NGVD 29 superseded value.
 JV1051
 JV1051.Click photographs - Photos may exist for this station.
 JV1051
 JV1051;                    North         East    Units  Estimated Accuracy
 JV1051;SPC MD       -   160,400.      403,990.      MT  (+/- 180 meters Scaled)
 JV1051
 JV1051_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ310309(NAD 83)
 JV1051
 JV1051                          SUPERSEDED SURVEY CONTROL
 JV1051
 JV1051  NGVD 29 (11/26/84)  139.594  (m)          457.98   (f) ADJUSTED    2 0
 JV1051
 JV1051.Superseded values are not recommended for survey control.
 JV1051
 JV1051.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1051.See file dsdata.pdf to determine how the superseded data were derived.
 JV1051
 JV1051_MARKER: Z = SEE DESCRIPTION
 JV1051_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1051_SP_SET: TREE
 JV1051_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1051
 JV1051  HISTORY     - Date     Condition        Report By
 JV1051  HISTORY     - UNK      MONUMENTED       WSSC
 JV1051  HISTORY     - 1939     GOOD             WSSC
 JV1051
 JV1051                          STATION DESCRIPTION
 JV1051
 JV1051'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1051'0.6 MI E FROM SPENCERVILLE.
 JV1051'ON SANDY SPRING ROAD, BETWEEN TWO DRIVES (ONE LEADS NORTH AND
 JV1051'ONE LEADS SOUTH), ON THE SOUTH SIDE OF THE ROAD, ON THE EAST
 JV1051'SIDE OF THE DRIVE LEADING SOUTH, AND IN THE SOUTH ROOT OF A
 JV1051'36-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1052 ***********************************************************************
 JV1052  DESIGNATION -  2218 WSSC
 JV1052  PID         -  JV1052
 JV1052  STATE/COUNTY-  MD/MONTGOMERY
 JV1052  COUNTRY     -  US
 JV1052  USGS QUAD   -  BELTSVILLE (2016)
 JV1052
 JV1052                         *CURRENT SURVEY CONTROL
 JV1052  ______________________________________________________________________
 JV1052* NAD 83(1986) POSITION- 39 06 47.     (N) 076 57 25.     (W)   SCALED
 JV1052* NAVD 88 ORTHO HEIGHT -   142.06  (+/-2cm)      466.1   (feet) VERTCON3
 JV1052  ______________________________________________________________________
 JV1052  GEOID HEIGHT    -        -32.025 (meters)                     GEOID18
 JV1052  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1052
 JV1052.The horizontal coordinates were scaled from a map and have
 JV1052.an estimated accuracy of +/- 6 seconds.
 JV1052
 JV1052.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1052.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1052
 JV1052.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1052.GEOID18 height accuracy estimate available here.
 JV1052
 JV1052.The vertical order pertains to the NGVD 29 superseded value.
 JV1052
 JV1052.Click photographs - Photos may exist for this station.
 JV1052
 JV1052;                    North         East    Units  Estimated Accuracy
 JV1052;SPC MD       -   160,560.      403,720.      MT  (+/- 180 meters Scaled)
 JV1052
 JV1052_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ308311(NAD 83)
 JV1052
 JV1052                          SUPERSEDED SURVEY CONTROL
 JV1052
 JV1052  NGVD 29 (11/26/84)  142.270  (m)          466.76   (f) ADJUSTED    2 0
 JV1052
 JV1052.Superseded values are not recommended for survey control.
 JV1052
 JV1052.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1052.See file dsdata.pdf to determine how the superseded data were derived.
 JV1052
 JV1052_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION
 JV1052_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1052_SP_SET: PROPERTY STONE
 JV1052_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1052
 JV1052  HISTORY     - Date     Condition        Report By
 JV1052  HISTORY     - UNK      MONUMENTED       WSSC
 JV1052  HISTORY     - 1939     GOOD             WSSC
 JV1052
 JV1052                          STATION DESCRIPTION
 JV1052
 JV1052'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1052'0.4 MI E FROM SPENCERVILLE.
 JV1052'ON SANDY SPRING ROAD, ON THE NORTH SIDE OF THE ROAD, AND AT
 JV1052'A WHITE FLINT STONE AT A PROPERTY CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1055 ***********************************************************************
 JV1055  DESIGNATION -  2219 WSSC
 JV1055  PID         -  JV1055
 JV1055  STATE/COUNTY-  MD/MONTGOMERY
 JV1055  COUNTRY     -  US
 JV1055  USGS QUAD   -  BELTSVILLE (2016)
 JV1055
 JV1055                         *CURRENT SURVEY CONTROL
 JV1055  ______________________________________________________________________
 JV1055* NAD 83(1986) POSITION- 39 07 05.     (N) 076 58 42.     (W)   SCALED
 JV1055* NAVD 88 ORTHO HEIGHT -   161.76  (+/-2cm)      530.7   (feet) VERTCON3
 JV1055  ______________________________________________________________________
 JV1055  GEOID HEIGHT    -        -31.985 (meters)                     GEOID18
 JV1055  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1055
 JV1055.The horizontal coordinates were scaled from a map and have
 JV1055.an estimated accuracy of +/- 6 seconds.
 JV1055
 JV1055.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1055.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1055
 JV1055.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1055.GEOID18 height accuracy estimate available here.
 JV1055
 JV1055.The vertical order pertains to the NGVD 29 superseded value.
 JV1055
 JV1055.Click photographs - Photos may exist for this station.
 JV1055
 JV1055;                    North         East    Units  Estimated Accuracy
 JV1055;SPC MD       -   161,110.      401,870.      MT  (+/- 180 meters Scaled)
 JV1055
 JV1055_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ289317(NAD 83)
 JV1055
 JV1055                          SUPERSEDED SURVEY CONTROL
 JV1055
 JV1055  NGVD 29 (11/26/84)  161.966  (m)          531.38   (f) ADJUSTED    2 0
 JV1055
 JV1055.Superseded values are not recommended for survey control.
 JV1055
 JV1055.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1055.See file dsdata.pdf to determine how the superseded data were derived.
 JV1055
 JV1055_MARKER: Q = CHISELED SQUARE
 JV1055_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1055_SP_SET: CULVERT
 JV1055_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1055
 JV1055  HISTORY     - Date     Condition        Report By
 JV1055  HISTORY     - UNK      MONUMENTED       WSSC
 JV1055  HISTORY     - 1939     GOOD             WSSC
 JV1055
 JV1055                          STATION DESCRIPTION
 JV1055
 JV1055'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1055'0.6 MI W FROM SPENCERVILLE.
 JV1055'ON SANDY SPRING ROAD, 0.4 MILE EAST OF THE JUNCTION OF A ROAD
 JV1055'LEADING NORTH TO STABLERS HOUSE AND TRIANGULATION STATION STABLER,
 JV1055'WEST OF A ROAD LEADING NORTH, ON THE NORTH SIDE OF THE MAIN
 JV1055'ROAD, AT A CULVERT UNDER THE ROAD, AND ON THE CENTER OF THE TOP
 JV1055'OF THE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1064 ***********************************************************************
 JV1064  DESIGNATION -  2220
 JV1064  PID         -  JV1064
 JV1064  STATE/COUNTY-  MD/MONTGOMERY
 JV1064  COUNTRY     -  US
 JV1064  USGS QUAD   -  CLARKSVILLE (2016)
 JV1064
 JV1064                         *CURRENT SURVEY CONTROL
 JV1064  ______________________________________________________________________
 JV1064* NAD 83(1986) POSITION- 39 07 29.87   (N) 076 59 21.04   (W)   HD_HELD1
 JV1064* NAVD 88 ORTHO HEIGHT -   168.59  (+/-2cm)      553.1   (feet) VERTCON3
 JV1064  ______________________________________________________________________
 JV1064  GEOID HEIGHT    -        -31.966 (meters)                     GEOID18
 JV1064  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1064
 JV1064.The horizontal coordinates were determined by differentially corrected
 JV1064.hand held GPS observations or other comparable positioning techniques
 JV1064.and have an estimated accuracy of +/- 3 meters.
 JV1064
 JV1064.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1064.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1064
 JV1064.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1064.GEOID18 height accuracy estimate available here.
 JV1064
 JV1064.The vertical order pertains to the NGVD 29 superseded value.
 JV1064
 JV1064.Click photographs - Photos may exist for this station.
 JV1064
 JV1064;                    North         East    Units  Estimated Accuracy
 JV1064;SPC MD       -   161,878.7     400,935.8     MT  (+/- 3 meters HH1 GPS) 
 JV1064
 JV1064_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2804932528(NAD 83)
 JV1064
 JV1064                          SUPERSEDED SURVEY CONTROL
 JV1064
 JV1064  NGVD 29 (11/26/84)  168.805  (m)          553.82   (f) ADJUSTED    2 0
 JV1064
 JV1064.Superseded values are not recommended for survey control.
 JV1064
 JV1064.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1064.See file dsdata.pdf to determine how the superseded data were derived.
 JV1064
 JV1064_MARKER: Q = CHISELED SQUARE
 JV1064_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1064_SP_SET: STEP
 JV1064_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1064_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1064+SATELLITE: SATELLITE OBSERVATIONS - December 29, 2006
 JV1064
 JV1064  HISTORY     - Date     Condition        Report By
 JV1064  HISTORY     - UNK      MONUMENTED       WSSC
 JV1064  HISTORY     - 1939     GOOD             WSSC
 JV1064  HISTORY     - 20061229 GOOD             NGS
 JV1064
 JV1064                          STATION DESCRIPTION
 JV1064
 JV1064'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1064'0.2 MI N FROM BROWNS CORNER.
 JV1064'ON COLESVILLE ROAD, AT THE TOP OF A HILL, AT SOME STEPS ON THE
 JV1064'EAST SIDE OF THE ROAD, AND ON THE SOUTH END OF THE BOTTOM CONCRETE
 JV1064'STEP.
 JV1064
 JV1064                          STATION RECOVERY (2006)
 JV1064
 JV1064'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV1064'CHISELED SQUARE IS BECOMING VERY WORN.  OTHER THAN THE STAIRS NO
 JV1064'STRUCTURE REMAINS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1060 ***********************************************************************
 JV1060  DESIGNATION -  2221 WSSC
 JV1060  PID         -  JV1060
 JV1060  STATE/COUNTY-  MD/MONTGOMERY
 JV1060  COUNTRY     -  US
 JV1060  USGS QUAD   -  CLARKSVILLE (2016)
 JV1060
 JV1060                         *CURRENT SURVEY CONTROL
 JV1060  ______________________________________________________________________
 JV1060* NAD 83(1986) POSITION- 39 07 52.     (N) 076 59 35.     (W)   SCALED
 JV1060* NAVD 88 ORTHO HEIGHT -   168.16  (+/-2cm)      551.7   (feet) VERTCON3
 JV1060  ______________________________________________________________________
 JV1060  GEOID HEIGHT    -        -31.958 (meters)                     GEOID18
 JV1060  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1060
 JV1060.The horizontal coordinates were scaled from a map and have
 JV1060.an estimated accuracy of +/- 6 seconds.
 JV1060
 JV1060.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1060.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1060
 JV1060.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1060.GEOID18 height accuracy estimate available here.
 JV1060
 JV1060.The vertical order pertains to the NGVD 29 superseded value.
 JV1060
 JV1060.Click photographs - Photos may exist for this station.
 JV1060
 JV1060;                    North         East    Units  Estimated Accuracy
 JV1060;SPC MD       -   162,560.      400,600.      MT  (+/- 180 meters Scaled)
 JV1060
 JV1060_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ277332(NAD 83)
 JV1060
 JV1060                          SUPERSEDED SURVEY CONTROL
 JV1060
 JV1060  NGVD 29 (11/26/84)  168.374  (m)          552.41   (f) ADJUSTED    2 0
 JV1060
 JV1060.Superseded values are not recommended for survey control.
 JV1060
 JV1060.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1060.See file dsdata.pdf to determine how the superseded data were derived.
 JV1060
 JV1060_MARKER: Z = SEE DESCRIPTION
 JV1060_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1060_SP_SET: TREE
 JV1060_STAMPING: WSSC 2221
 JV1060_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1060
 JV1060  HISTORY     - Date     Condition        Report By
 JV1060  HISTORY     - UNK      MONUMENTED       WSSC
 JV1060  HISTORY     - 1939     GOOD             WSSC
 JV1060
 JV1060                          STATION DESCRIPTION
 JV1060
 JV1060'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1060'0.6 MI N FROM BROWNS CORNER.
 JV1060'ON COLESVILLE ROAD, 0.4 MILE SOUTH OF EDNOR, AT THE END OF A
 JV1060'FENCE ON THE EAST SIDE OF THE ROAD, AND IN THE SOUTHEAST ROOT OF
 JV1060'A 30-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1063 ***********************************************************************
 JV1063  DESIGNATION -  2222
 JV1063  PID         -  JV1063
 JV1063  STATE/COUNTY-  MD/MONTGOMERY
 JV1063  COUNTRY     -  US
 JV1063  USGS QUAD   -  CLARKSVILLE (2016)
 JV1063
 JV1063                         *CURRENT SURVEY CONTROL
 JV1063  ______________________________________________________________________
 JV1063* NAD 83(1986) POSITION- 39 08 33.     (N) 076 59 58.     (W)   SCALED
 JV1063* NAVD 88 ORTHO HEIGHT -   158.24  (+/-2cm)      519.2   (feet) VERTCON3
 JV1063  ______________________________________________________________________
 JV1063  GEOID HEIGHT    -        -31.943 (meters)                     GEOID18
 JV1063  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1063
 JV1063.The horizontal coordinates were scaled from a map and have
 JV1063.an estimated accuracy of +/- 6 seconds.
 JV1063
 JV1063.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1063.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1063
 JV1063.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1063.GEOID18 height accuracy estimate available here.
 JV1063
 JV1063.The vertical order pertains to the NGVD 29 superseded value.
 JV1063
 JV1063.Click photographs - Photos may exist for this station.
 JV1063
 JV1063;                    North         East    Units  Estimated Accuracy
 JV1063;SPC MD       -   163,830.      400,050.      MT  (+/- 180 meters Scaled)
 JV1063
 JV1063_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ272344(NAD 83)
 JV1063
 JV1063                          SUPERSEDED SURVEY CONTROL
 JV1063
 JV1063  NGVD 29 (11/26/84)  158.452  (m)          519.85   (f) ADJUSTED    2 0
 JV1063
 JV1063.Superseded values are not recommended for survey control.
 JV1063
 JV1063.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1063.See file dsdata.pdf to determine how the superseded data were derived.
 JV1063
 JV1063_MARKER: Q = CHISELED SQUARE
 JV1063_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1063_SP_SET: CULVERT HEADWALL
 JV1063_MARK LOGO: NONE
 JV1063_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1063_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1063+STABILITY: SURFACE MOTION
 JV1063_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1063+SATELLITE: SATELLITE OBSERVATIONS - August 28, 2001
 JV1063
 JV1063  HISTORY     - Date     Condition        Report By
 JV1063  HISTORY     - UNK      MONUMENTED       WSSC
 JV1063  HISTORY     - 1939     GOOD             WSSC
 JV1063  HISTORY     - 20010828 GOOD             MDSHA
 JV1063
 JV1063                          STATION DESCRIPTION
 JV1063
 JV1063'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1063'0.6 MI N FROM EDNOR.
 JV1063'ON COLESVILLE ROAD, ABOUT 350 FEET NORTH OF TUCKER LANE, OPPOSITE
 JV1063'THE GRAHAM RESIDENCE, ON THE EAST SIDE OF THE ROAD, AT A CONCRETE
 JV1063'CULVERT UNDER THE ROAD, AND ON THE TOP OF THE EAST HEADWALL.
 JV1063
 JV1063                          STATION RECOVERY (2001)
 JV1063
 JV1063'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1063'THE STATION IS LOCATED ABOUT 0.8 MI (1.29 KM) SOUTHEAST OF ASHTON, 0.6
 JV1063'MI (0.97 KM) NORTH OF EDNOR.  TO REACH THE STATION FROM THE
 JV1063'INTERSECTION OF STATE HIGHWAY 650 AND STATE HIGHWAY 108 IN ASHTON, GO
 JV1063'SOUTHEAST ALONG STATE HIGHWAY 650 FOR 0.8 MI (1.29 KM) TO THE STATION
 JV1063'ON THE LEFT.  THE STATION IS A CHISELED SQUARE IN THE TOP OF AND ABOUT
 JV1063'IN THE MIDDLE OF A CONCRETE HEADWALL, ON THE EAST SIDE OF THE ROAD,
 JV1063'FOR A CONCRETE CULVERT RUNNING UNDER THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2635 ***********************************************************************
 JV2635  DESIGNATION -  2223 WSSC
 JV2635  PID         -  JV2635
 JV2635  STATE/COUNTY-  MD/MONTGOMERY
 JV2635  COUNTRY     -  US
 JV2635  USGS QUAD   -  SANDY SPRING (2016)
 JV2635
 JV2635                         *CURRENT SURVEY CONTROL
 JV2635  ______________________________________________________________________
 JV2635* NAD 83(1986) POSITION- 39 09 24.     (N) 077 00 48.     (W)   SCALED
 JV2635* NAVD 88 ORTHO HEIGHT -   145.44  (+/-2cm)      477.2   (feet) VERTCON3
 JV2635  ______________________________________________________________________
 JV2635  GEOID HEIGHT    -        -31.914 (meters)                     GEOID18
 JV2635  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2635
 JV2635.The horizontal coordinates were scaled from a map and have
 JV2635.an estimated accuracy of +/- 6 seconds.
 JV2635
 JV2635.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2635.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2635
 JV2635.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2635.GEOID18 height accuracy estimate available here.
 JV2635
 JV2635.The vertical order pertains to the NGVD 29 superseded value.
 JV2635
 JV2635.Click photographs - Photos may exist for this station.
 JV2635
 JV2635;                    North         East    Units  Estimated Accuracy
 JV2635;SPC MD       -   165,400.      398,850.      MT  (+/- 180 meters Scaled)
 JV2635
 JV2635_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ260360(NAD 83)
 JV2635
 JV2635                          SUPERSEDED SURVEY CONTROL
 JV2635
 JV2635  NGVD 29 (11/26/84)  145.650  (m)          477.85   (f) ADJUSTED    2 0
 JV2635
 JV2635.Superseded values are not recommended for survey control.
 JV2635
 JV2635.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2635.See file dsdata.pdf to determine how the superseded data were derived.
 JV2635
 JV2635_MARKER: Q = CHISELED SQUARE
 JV2635_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2635_SP_SET: CULVERT
 JV2635_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2635
 JV2635  HISTORY     - Date     Condition        Report By
 JV2635  HISTORY     - UNK      MONUMENTED       WSSC
 JV2635  HISTORY     - 1944     GOOD             WSSC
 JV2635  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2635
 JV2635                          STATION DESCRIPTION
 JV2635
 JV2635'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2635'0.4 MI N FROM ASHTON.
 JV2635'ON THE ASHTON-BRIGHTON ROAD (STATE HIGHWAY 116), IN A VALLEY,
 JV2635'JUST NORTH OF A DRIVE LEADING WEST TO A HOUSE, ON THE EAST SIDE
 JV2635'OF THE ROAD, AT A CONCRETE CULVERT UNDER THE ROAD, AND ON
 JV2635'THE CENTER OF THE TOP OF THE EAST HEADWALL.
 JV2635
 JV2635                          STATION RECOVERY (1995)
 JV2635
 JV2635'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2635'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2638 ***********************************************************************
 JV2638  DESIGNATION -  2224 A WSSC
 JV2638  PID         -  JV2638
 JV2638  STATE/COUNTY-  MD/MONTGOMERY
 JV2638  COUNTRY     -  US
 JV2638  USGS QUAD   -  SANDY SPRING (2016)
 JV2638
 JV2638                         *CURRENT SURVEY CONTROL
 JV2638  ______________________________________________________________________
 JV2638* NAD 83(1986) POSITION- 39 10 20.     (N) 077 01 10.     (W)   SCALED
 JV2638* NAVD 88 ORTHO HEIGHT -   121.05  (+/-2cm)      397.1   (feet) VERTCON3
 JV2638  ______________________________________________________________________
 JV2638  GEOID HEIGHT    -        -31.899 (meters)                     GEOID18
 JV2638  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2638
 JV2638.The horizontal coordinates were scaled from a map and have
 JV2638.an estimated accuracy of +/- 6 seconds.
 JV2638
 JV2638.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2638.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2638
 JV2638.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2638.GEOID18 height accuracy estimate available here.
 JV2638
 JV2638.The vertical order pertains to the NGVD 29 superseded value.
 JV2638
 JV2638.Click photographs - Photos may exist for this station.
 JV2638
 JV2638;                    North         East    Units  Estimated Accuracy
 JV2638;SPC MD       -   167,130.      398,320.      MT  (+/- 180 meters Scaled)
 JV2638
 JV2638_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ255378(NAD 83)
 JV2638
 JV2638                          SUPERSEDED SURVEY CONTROL
 JV2638
 JV2638  NGVD 29 (11/26/84)  121.266  (m)          397.85   (f) ADJUSTED    2 0
 JV2638
 JV2638.Superseded values are not recommended for survey control.
 JV2638
 JV2638.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2638.See file dsdata.pdf to determine how the superseded data were derived.
 JV2638
 JV2638_MARKER: Q = CHISELED SQUARE
 JV2638_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2638_SP_SET: CULVERT
 JV2638_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2638
 JV2638  HISTORY     - Date     Condition        Report By
 JV2638  HISTORY     - UNK      MONUMENTED       WSSC
 JV2638  HISTORY     - 1944     GOOD             WSSC
 JV2638  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2638
 JV2638                          STATION DESCRIPTION
 JV2638
 JV2638'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2638'0.3 MI N FROM BRINKLOW.
 JV2638'ON THE ASHTON-BRIGHTON ROAD (STATE HIGHWAY 116), 0.3 MILE
 JV2638'SOUTH OF HAWLINGS RIVER, AT THE TOP OF A HILL, ON THE EAST
 JV2638'SIDE OF THE ROAD, AT A CONCRETE CULVERT UNDER THE ROAD, AND ON
 JV2638'THE CENTER OF THE TOP OF THE EAST HEADWALL.
 JV2638
 JV2638                          STATION RECOVERY (1995)
 JV2638
 JV2638'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2638'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2637 ***********************************************************************
 JV2637  DESIGNATION -  2224 WSSC
 JV2637  PID         -  JV2637
 JV2637  STATE/COUNTY-  MD/MONTGOMERY
 JV2637  COUNTRY     -  US
 JV2637  USGS QUAD   -  SANDY SPRING (2016)
 JV2637
 JV2637                         *CURRENT SURVEY CONTROL
 JV2637  ______________________________________________________________________
 JV2637* NAD 83(1986) POSITION- 39 10 04.     (N) 077 00 59.     (W)   SCALED
 JV2637* NAVD 88 ORTHO HEIGHT -   133.74  (+/-2cm)      438.8   (feet) VERTCON3
 JV2637  ______________________________________________________________________
 JV2637  GEOID HEIGHT    -        -31.906 (meters)                     GEOID18
 JV2637  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2637
 JV2637.The horizontal coordinates were scaled from a map and have
 JV2637.an estimated accuracy of +/- 6 seconds.
 JV2637
 JV2637.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2637.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2637
 JV2637.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2637.GEOID18 height accuracy estimate available here.
 JV2637
 JV2637.The vertical order pertains to the NGVD 29 superseded value.
 JV2637
 JV2637.Click photographs - Photos may exist for this station.
 JV2637
 JV2637;                    North         East    Units  Estimated Accuracy
 JV2637;SPC MD       -   166,630.      398,580.      MT  (+/- 180 meters Scaled)
 JV2637
 JV2637_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ258373(NAD 83)
 JV2637
 JV2637                          SUPERSEDED SURVEY CONTROL
 JV2637
 JV2637  NGVD 29 (11/26/84)  133.949  (m)          439.46   (f) ADJUSTED    2 0
 JV2637
 JV2637.Superseded values are not recommended for survey control.
 JV2637
 JV2637.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2637.See file dsdata.pdf to determine how the superseded data were derived.
 JV2637
 JV2637_MARKER: Q = CHISELED SQUARE
 JV2637_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2637_SP_SET: CONCRETE PORCH
 JV2637_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2637
 JV2637  HISTORY     - Date     Condition        Report By
 JV2637  HISTORY     - UNK      MONUMENTED       WSSC
 JV2637  HISTORY     - 1944     GOOD             WSSC
 JV2637  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2637
 JV2637                          STATION DESCRIPTION
 JV2637
 JV2637'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2637'1.3 MI N FROM ASHTON.
 JV2637'ON THE ASHTON-BRIGHTON ROAD (STATE HIGHWAY 116)8 AT BRINKLOW,
 JV2637'AT THE POST OFFICE, AND ON THE SOUTHEAST CORNER OF THE CONCRETE
 JV2637'PORCH.
 JV2637
 JV2637                          STATION RECOVERY (1995)
 JV2637
 JV2637'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2637'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2641 ***********************************************************************
 JV2641  DESIGNATION -  2225 WSSC
 JV2641  PID         -  JV2641
 JV2641  STATE/COUNTY-  MD/MONTGOMERY
 JV2641  COUNTRY     -  US
 JV2641  USGS QUAD   -  SANDY SPRING (2016)
 JV2641
 JV2641                         *CURRENT SURVEY CONTROL
 JV2641  ______________________________________________________________________
 JV2641* NAD 83(1986) POSITION- 39 10 46.     (N) 077 01 38.     (W)   SCALED
 JV2641* NAVD 88 ORTHO HEIGHT -   124.38  (+/-2cm)      408.1   (feet) VERTCON3
 JV2641  ______________________________________________________________________
 JV2641  GEOID HEIGHT    -        -31.885 (meters)                     GEOID18
 JV2641  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2641
 JV2641.The horizontal coordinates were scaled from a map and have
 JV2641.an estimated accuracy of +/- 6 seconds.
 JV2641
 JV2641.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2641.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2641
 JV2641.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2641.GEOID18 height accuracy estimate available here.
 JV2641
 JV2641.The vertical order pertains to the NGVD 29 superseded value.
 JV2641
 JV2641.Click photographs - Photos may exist for this station.
 JV2641
 JV2641;                    North         East    Units  Estimated Accuracy
 JV2641;SPC MD       -   167,930.      397,650.      MT  (+/- 180 meters Scaled)
 JV2641
 JV2641_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ248386(NAD 83)
 JV2641
 JV2641                          SUPERSEDED SURVEY CONTROL
 JV2641
 JV2641  NGVD 29 (11/26/84)  124.597  (m)          408.78   (f) ADJUSTED    2 0
 JV2641
 JV2641.Superseded values are not recommended for survey control.
 JV2641
 JV2641.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2641.See file dsdata.pdf to determine how the superseded data were derived.
 JV2641
 JV2641_MARKER: Z = SEE DESCRIPTION
 JV2641_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2641_SP_SET: TREE
 JV2641_STAMPING: WSSC 2225
 JV2641_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2641
 JV2641  HISTORY     - Date     Condition        Report By
 JV2641  HISTORY     - UNK      MONUMENTED       WSSC
 JV2641  HISTORY     - 1944     GOOD             WSSC
 JV2641  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2641
 JV2641                          STATION DESCRIPTION
 JV2641
 JV2641'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2641'1.1 MI N FROM BRINKLOW.
 JV2641'ON THE ASHTON-SUNSHINE ROAD (STATE HIGHWAY 116), 0.8 MILE SOUTH OF
 JV2641'THE BRIGHTON CHURCH, 0.5 MILE NORTH OF HAWLINGS RIVER, ON THE WEST
 JV2641'SIDE OF THE ROAD, AND IN THE EAST ROOT OF A 30-INCH MAPLE.
 JV2641
 JV2641                          STATION RECOVERY (1995)
 JV2641
 JV2641'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2641'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2642 ***********************************************************************
 JV2642  DESIGNATION -  2226 WSSC
 JV2642  PID         -  JV2642
 JV2642  STATE/COUNTY-  MD/MONTGOMERY
 JV2642  COUNTRY     -  US
 JV2642  USGS QUAD   -  SANDY SPRING (2016)
 JV2642
 JV2642                         *CURRENT SURVEY CONTROL
 JV2642  ______________________________________________________________________
 JV2642* NAD 83(1986) POSITION- 39 11 13.     (N) 077 01 31.     (W)   SCALED
 JV2642* NAVD 88 ORTHO HEIGHT -   137.85  (+/-2cm)      452.3   (feet) VERTCON3
 JV2642  ______________________________________________________________________
 JV2642  GEOID HEIGHT    -        -31.887 (meters)                     GEOID18
 JV2642  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2642
 JV2642.The horizontal coordinates were scaled from a map and have
 JV2642.an estimated accuracy of +/- 6 seconds.
 JV2642
 JV2642.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2642.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2642
 JV2642.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2642.GEOID18 height accuracy estimate available here.
 JV2642
 JV2642.The vertical order pertains to the NGVD 29 superseded value.
 JV2642
 JV2642.Click photographs - Photos may exist for this station.
 JV2642
 JV2642;                    North         East    Units  Estimated Accuracy
 JV2642;SPC MD       -   168,760.      397,820.      MT  (+/- 180 meters Scaled)
 JV2642
 JV2642_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ250394(NAD 83)
 JV2642
 JV2642                          SUPERSEDED SURVEY CONTROL
 JV2642
 JV2642  NGVD 29 (11/26/84)  138.062  (m)          452.96   (f) ADJUSTED    2 0
 JV2642
 JV2642.Superseded values are not recommended for survey control.
 JV2642
 JV2642.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2642.See file dsdata.pdf to determine how the superseded data were derived.
 JV2642
 JV2642_MARKER: Q = CHISELED SQUARE
 JV2642_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2642_SP_SET: CULVERT
 JV2642_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2642
 JV2642  HISTORY     - Date     Condition        Report By
 JV2642  HISTORY     - UNK      MONUMENTED       WSSC
 JV2642  HISTORY     - 1944     GOOD             WSSC
 JV2642
 JV2642                          STATION DESCRIPTION
 JV2642
 JV2642'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2642'1.5 MI N FROM BRINKLOW.
 JV2642'ON THE ASHTON-SUNSHINE ROAD (STATE HIGHWAY 116), 0.8 MILE NORTH
 JV2642'OF HAWLINGS RIVER, ABOUT 350 FEET SOUTH OF A SHARP BEND IN THE
 JV2642'ROAD, AT A CONCRETE CULVERT UNDER THE ROAD, AND ON THE CENTER
 JV2642'OF THE TOP OF THE WEST HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2645 ***********************************************************************
 JV2645  DESIGNATION -  2227 WSSC
 JV2645  PID         -  JV2645
 JV2645  STATE/COUNTY-  MD/MONTGOMERY
 JV2645  COUNTRY     -  US
 JV2645  USGS QUAD   -  SANDY SPRING (2016)
 JV2645
 JV2645                         *CURRENT SURVEY CONTROL
 JV2645  ______________________________________________________________________
 JV2645* NAD 83(1986) POSITION- 39 12 16.     (N) 077 01 50.     (W)   SCALED
 JV2645* NAVD 88 ORTHO HEIGHT -   135.49  (+/-2cm)      444.5   (feet) VERTCON3
 JV2645  ______________________________________________________________________
 JV2645  GEOID HEIGHT    -        -31.875 (meters)                     GEOID18
 JV2645  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2645
 JV2645.The horizontal coordinates were scaled from a map and have
 JV2645.an estimated accuracy of +/- 6 seconds.
 JV2645
 JV2645.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2645.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2645
 JV2645.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2645.GEOID18 height accuracy estimate available here.
 JV2645
 JV2645.The vertical order pertains to the NGVD 29 superseded value.
 JV2645
 JV2645.Click photographs - Photos may exist for this station.
 JV2645
 JV2645;                    North         East    Units  Estimated Accuracy
 JV2645;SPC MD       -   170,700.      397,360.      MT  (+/- 180 meters Scaled)
 JV2645
 JV2645_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ246414(NAD 83)
 JV2645
 JV2645                          SUPERSEDED SURVEY CONTROL
 JV2645
 JV2645  NGVD 29 (11/26/84)  135.702  (m)          445.22   (f) ADJUSTED    2 0
 JV2645
 JV2645.Superseded values are not recommended for survey control.
 JV2645
 JV2645.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2645.See file dsdata.pdf to determine how the superseded data were derived.
 JV2645
 JV2645_MARKER: Z = SEE DESCRIPTION
 JV2645_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2645_SP_SET: TREE
 JV2645_STAMPING: WSSC 2227
 JV2645_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2645
 JV2645  HISTORY     - Date     Condition        Report By
 JV2645  HISTORY     - UNK      MONUMENTED       WSSC
 JV2645  HISTORY     - 1944     GOOD             WSSC
 JV2645
 JV2645                          STATION DESCRIPTION
 JV2645
 JV2645'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2645'2 MI SE FROM SUNSHINE.
 JV2645'ON THE BRIGHTON-SUNSHINE ROAD, ON THE EAST SIDE OF THE ROAD,
 JV2645'AND IN THE EAST ROOT OF A 30-INCH OAK TREE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2647 ***********************************************************************
 JV2647  DESIGNATION -  2228 WSSC
 JV2647  PID         -  JV2647
 JV2647  STATE/COUNTY-  MD/MONTGOMERY
 JV2647  COUNTRY     -  US
 JV2647  USGS QUAD   -  SANDY SPRING (2016)
 JV2647
 JV2647                         *CURRENT SURVEY CONTROL
 JV2647  ______________________________________________________________________
 JV2647* NAD 83(1986) POSITION- 39 12 50.     (N) 077 02 49.     (W)   SCALED
 JV2647* NAVD 88 ORTHO HEIGHT -   137.45  (+/-2cm)      451.0   (feet) VERTCON3
 JV2647  ______________________________________________________________________
 JV2647  GEOID HEIGHT    -        -31.849 (meters)                     GEOID18
 JV2647  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2647
 JV2647.The horizontal coordinates were scaled from a map and have
 JV2647.an estimated accuracy of +/- 6 seconds.
 JV2647
 JV2647.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2647.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2647
 JV2647.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2647.GEOID18 height accuracy estimate available here.
 JV2647
 JV2647.The vertical order pertains to the NGVD 29 superseded value.
 JV2647
 JV2647.Click photographs - Photos may exist for this station.
 JV2647
 JV2647;                    North         East    Units  Estimated Accuracy
 JV2647;SPC MD       -   171,750.      395,950.      MT  (+/- 180 meters Scaled)
 JV2647
 JV2647_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ232425(NAD 83)
 JV2647
 JV2647                          SUPERSEDED SURVEY CONTROL
 JV2647
 JV2647  NGVD 29 (11/26/84)  137.654  (m)          451.62   (f) ADJUSTED    2 0
 JV2647
 JV2647.Superseded values are not recommended for survey control.
 JV2647
 JV2647.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2647.See file dsdata.pdf to determine how the superseded data were derived.
 JV2647
 JV2647_MARKER: Z = SEE DESCRIPTION
 JV2647_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2647_SP_SET: TREE
 JV2647_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2647
 JV2647  HISTORY     - Date     Condition        Report By
 JV2647  HISTORY     - UNK      MONUMENTED       WSSC
 JV2647  HISTORY     - 1944     GOOD             WSSC
 JV2647
 JV2647                          STATION DESCRIPTION
 JV2647
 JV2647'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2647'1 MI SE FROM SUNSHINE.
 JV2647'ON THE BRIGHTON-SUNSHINE ROAD, AT THE ENTRANCE TO FLEMINGS FARMS,
 JV2647'IN A PASTURE ON THE EAST SIDE OF THE ROAD, AND IN THE WEST ROOT
 JV2647'OF A 20-INCH OAK TREE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2648 ***********************************************************************
 JV2648  DESIGNATION -  2229 WSSC
 JV2648  PID         -  JV2648
 JV2648  STATE/COUNTY-  MD/MONTGOMERY
 JV2648  COUNTRY     -  US
 JV2648  USGS QUAD   -  SANDY SPRING (2016)
 JV2648
 JV2648                         *CURRENT SURVEY CONTROL
 JV2648  ______________________________________________________________________
 JV2648* NAD 83(1986) POSITION- 39 13 03.     (N) 077 03 17.     (W)   SCALED
 JV2648* NAVD 88 ORTHO HEIGHT -   152.63  (+/-2cm)      500.8   (feet) VERTCON3
 JV2648  ______________________________________________________________________
 JV2648  GEOID HEIGHT    -        -31.838 (meters)                     GEOID18
 JV2648  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2648
 JV2648.The horizontal coordinates were scaled from a map and have
 JV2648.an estimated accuracy of +/- 6 seconds.
 JV2648
 JV2648.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2648.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2648
 JV2648.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2648.GEOID18 height accuracy estimate available here.
 JV2648
 JV2648.The vertical order pertains to the NGVD 29 superseded value.
 JV2648
 JV2648.Click photographs - Photos may exist for this station.
 JV2648
 JV2648;                    North         East    Units  Estimated Accuracy
 JV2648;SPC MD       -   172,150.      395,270.      MT  (+/- 180 meters Scaled)
 JV2648
 JV2648_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ226429(NAD 83)
 JV2648
 JV2648                          SUPERSEDED SURVEY CONTROL
 JV2648
 JV2648  NGVD 29 (11/26/84)  152.831  (m)          501.41   (f) ADJUSTED    2 0
 JV2648
 JV2648.Superseded values are not recommended for survey control.
 JV2648
 JV2648.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2648.See file dsdata.pdf to determine how the superseded data were derived.
 JV2648
 JV2648_MARKER: Q = CHISELED SQUARE
 JV2648_SETTING: 65 = SET IN UNSPECIFIED ROCK OR BOULDER
 JV2648_SP_SET: UNSPECIFIED ROCK
 JV2648_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2648
 JV2648  HISTORY     - Date     Condition        Report By
 JV2648  HISTORY     - UNK      MONUMENTED       WSSC
 JV2648  HISTORY     - 1944     GOOD             WSSC
 JV2648
 JV2648                          STATION DESCRIPTION
 JV2648
 JV2648'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2648'0.4 MI SE FROM SUNSHINE.
 JV2648'ON THE BRIGHTON-SUNSHINE ROAD, IN A FIELD ON THE WEST SIDE OF
 JV2648'THE ROAD, AND ON THE TOP OF A LARGE ROCK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2945 ***********************************************************************
 JV2945  DESIGNATION -  223+84
 JV2945  PID         -  JV2945
 JV2945  STATE/COUNTY-  MD/WASHINGTON
 JV2945  COUNTRY     -  US
 JV2945  USGS QUAD   -  KEEDYSVILLE (2016)
 JV2945
 JV2945                         *CURRENT SURVEY CONTROL
 JV2945  ______________________________________________________________________
 JV2945* NAD 83(1986) POSITION- 39 22 58.     (N) 077 40 00.     (W)   SCALED
 JV2945* NAVD 88 ORTHO HEIGHT -   156.526 (meters)      513.54  (feet) ADJUSTED
 JV2945  ______________________________________________________________________
 JV2945  GEOID HEIGHT    -        -33.344 (meters)                     GEOID18
 JV2945  DYNAMIC HEIGHT  -        156.435 (meters)      513.24  (feet) COMP
 JV2945  MODELED GRAVITY -    980,040.1   (mgal)                       NAVD 88
 JV2945
 JV2945  VERT ORDER      -  FIRST     CLASS II
 JV2945
 JV2945.The horizontal coordinates were scaled from a map and have
 JV2945.an estimated accuracy of +/- 6 seconds.
 JV2945
 JV2945.The orthometric height was determined by differential leveling and
 JV2945.adjusted by the NATIONAL GEODETIC SURVEY
 JV2945.in June 1991.
 JV2945
 JV2945.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2945.GEOID18 height accuracy estimate available here.
 JV2945
 JV2945.Click photographs - Photos may exist for this station.
 JV2945
 JV2945.The dynamic height is computed by dividing the NAVD 88
 JV2945.geopotential number by the normal gravity value computed on the
 JV2945.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2945.degrees latitude (g = 980.6199 gals.).
 JV2945
 JV2945.The modeled gravity was interpolated from observed gravity values.
 JV2945
 JV2945;                    North         East    Units  Estimated Accuracy
 JV2945;SPC MD       -   190,710.      342,560.      MT  (+/- 180 meters Scaled)
 JV2945
 JV2945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ703626(NAD 83)
 JV2945
 JV2945                          SUPERSEDED SURVEY CONTROL
 JV2945
 JV2945  NGVD 29 (11/26/84)  156.722  (m)          514.18   (f) ADJUSTED    1 2
 JV2945
 JV2945.Superseded values are not recommended for survey control.
 JV2945
 JV2945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2945.See file dsdata.pdf to determine how the superseded data were derived.
 JV2945
 JV2945_MARKER: Q = CHISELED SQUARE
 JV2945_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2945_SP_SET: BRIDGE ABUTMENT
 JV2945_MARK LOGO: BORR
 JV2945_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2945
 JV2945  HISTORY     - Date     Condition        Report By
 JV2945  HISTORY     - UNK      MONUMENTED       BORR
 JV2945  HISTORY     - 1934     GOOD             CGS
 JV2945  HISTORY     - 20101128 POOR             GEOCAC
 JV2945
 JV2945                          STATION DESCRIPTION
 JV2945
 JV2945'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JV2945'4.4 MI N FROM WEVERTON.
 JV2945'4.4 MILES NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2945'STATION AT WEVERTON, WASHINGTON COUNTY, 10 RAILS NORTH OF THE
 JV2945'STATION AT BROWNSVILLE, AT THE HIGHWAY BRIDGE OVER ISRAEL CREEK,
 JV2945'AND ON THE EAST END OF THE SOUTH ABUTMENT.  A CHISELED SQUARE.
 JV2945
 JV2945                          STATION RECOVERY (2010)
 JV2945
 JV2945'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2945'NOT RECOVERED. BRIDGE OVER STREAM HAS BEEN REBUILT. OLD STONE
 JV2945'FOUNDATION IS STILL PRESENT. STATION IS LIKELY STILL THERE, BUT BURIED
 JV2945'UNDER ABOUT 2FEET OF CONCRETE. UNUSABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2628 ***********************************************************************
 JV2628  DESIGNATION -  2238 WSSC RESET 1965
 JV2628  PID         -  JV2628
 JV2628  STATE/COUNTY-  MD/MONTGOMERY
 JV2628  COUNTRY     -  US
 JV2628  USGS QUAD   -  KENSINGTON (2016)
 JV2628
 JV2628                         *CURRENT SURVEY CONTROL
 JV2628  ______________________________________________________________________
 JV2628* NAD 83(1986) POSITION- 39 04 52.     (N) 077 04 35.     (W)   SCALED
 JV2628* NAVD 88 ORTHO HEIGHT -   106.96  (+/-2cm)      350.9   (feet) VERTCON3
 JV2628  ______________________________________________________________________
 JV2628  GEOID HEIGHT    -        -31.833 (meters)                     GEOID18
 JV2628  VERT ORDER      -  THIRD (See Below)
 JV2628
 JV2628.The horizontal coordinates were scaled from a map and have
 JV2628.an estimated accuracy of +/- 6 seconds.
 JV2628
 JV2628.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2628.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2628
 JV2628.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2628.GEOID18 height accuracy estimate available here.
 JV2628
 JV2628.The vertical order pertains to the NGVD 29 superseded value.
 JV2628
 JV2628.Click photographs - Photos may exist for this station.
 JV2628
 JV2628;                    North         East    Units  Estimated Accuracy
 JV2628;SPC MD       -   157,010.      393,390.      MT  (+/- 180 meters Scaled)
 JV2628
 JV2628_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ203278(NAD 83)
 JV2628
 JV2628                          SUPERSEDED SURVEY CONTROL
 JV2628
 JV2628  NGVD 29 (??/??/??)  107.18   (m)          351.6    (f) RESET       3  
 JV2628
 JV2628.Superseded values are not recommended for survey control.
 JV2628
 JV2628.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2628.See file dsdata.pdf to determine how the superseded data were derived.
 JV2628
 JV2628_MARKER: DD = SURVEY DISK
 JV2628_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2628_STAMPING: 2238 RESET 1965
 JV2628_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2628+STABILITY: SURFACE MOTION
 JV2628
 JV2628  HISTORY     - Date     Condition        Report By
 JV2628  HISTORY     - 1965     MONUMENTED       MDSRC
 JV2628  HISTORY     - 1967     GOOD             CGS
 JV2628  HISTORY     - 19950818 GOOD             USPSQD
 JV2628
 JV2628                          STATION DESCRIPTION
 JV2628
 JV2628'DESCRIBED BY MD STATE ROADS COMM 1965
 JV2628'2.2 MI S FROM NORBECK.
 JV2628'ABOUT 2.2 MILES SOUTH ALONG GEORGIA AVENUE (STATE HIGHWAY 97),
 JV2628'FROM ITS JUNCTION WITH STATE HIGHWAY 28 IN NORBECK TO THE
 JV2628'JUNCTION OF ASPIN HILL ROAD AT THE GATE OF HEAVEN CEMETERY,
 JV2628'118 FEET EAST OF THE CENTERLINE OF EXISTING HIGHWAY 97, 78.6
 JV2628'FEET SOUTHWEST OF THE NORTHWEST CORNER OF THE BRICK CEMETERY
 JV2628'GARAGE, 54 FEET WEST OF THE SOUTH WEST CORNER OF THE GARAGE
 JV2628'AND 14.4 FEET SOUTH OF A 30 X 30 INCH CONCRETE WELL COVER.
 JV2628'THE DISK IS SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV2628'THE GROUND.  NOTE-- THIS BENCH MARK REPLACES MARK DESIGNATED
 JV2628'2238 (WSSC) = 31 (MGS)
 JV2628
 JV2628                          STATION RECOVERY (1967)
 JV2628
 JV2628'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JV2628'RECOVERED IN GOOD CONDITION.
 JV2628
 JV2628                          STATION RECOVERY (1995)
 JV2628
 JV2628'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2628'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2626 ***********************************************************************
 JV2626  DESIGNATION -  2239 WSSC RESET 1965
 JV2626  PID         -  JV2626
 JV2626  STATE/COUNTY-  MD/MONTGOMERY
 JV2626  COUNTRY     -  US
 JV2626  USGS QUAD   -  KENSINGTON (2016)
 JV2626
 JV2626                         *CURRENT SURVEY CONTROL
 JV2626  ______________________________________________________________________
 JV2626* NAD 83(1986) POSITION- 39 05 02.     (N) 077 04 40.     (W)   SCALED
 JV2626* NAVD 88 ORTHO HEIGHT -   110.41  (+/-2cm)      362.2   (feet) VERTCON3
 JV2626  ______________________________________________________________________
 JV2626  GEOID HEIGHT    -        -31.828 (meters)                     GEOID18
 JV2626  VERT ORDER      -  THIRD (See Below)
 JV2626
 JV2626.The horizontal coordinates were scaled from a map and have
 JV2626.an estimated accuracy of +/- 6 seconds.
 JV2626
 JV2626.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2626.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2626
 JV2626.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2626.GEOID18 height accuracy estimate available here.
 JV2626
 JV2626.The vertical order pertains to the NGVD 29 superseded value.
 JV2626
 JV2626.Click photographs - Photos may exist for this station.
 JV2626
 JV2626;                    North         East    Units  Estimated Accuracy
 JV2626;SPC MD       -   157,320.      393,270.      MT  (+/- 180 meters Scaled)
 JV2626
 JV2626_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ202281(NAD 83)
 JV2626
 JV2626                          SUPERSEDED SURVEY CONTROL
 JV2626
 JV2626  NGVD 29 (??/??/??)  110.63   (m)          363.0    (f) RESET       3  
 JV2626
 JV2626.Superseded values are not recommended for survey control.
 JV2626
 JV2626.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2626.See file dsdata.pdf to determine how the superseded data were derived.
 JV2626
 JV2626_MARKER: DD = SURVEY DISK
 JV2626_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2626_STAMPING: 2239 RESET 1965
 JV2626_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2626+STABILITY: SURFACE MOTION
 JV2626
 JV2626  HISTORY     - Date     Condition        Report By
 JV2626  HISTORY     - 1965     MONUMENTED       MDSRC
 JV2626  HISTORY     - 1967     GOOD             CGS
 JV2626  HISTORY     - 19950818 GOOD             USPSQD
 JV2626
 JV2626                          STATION DESCRIPTION
 JV2626
 JV2626'DESCRIBED BY MD STATE ROADS COMM 1965
 JV2626'2 MI S FROM NORBECK.
 JV2626'ABOUT 2.0 MILES SOUTH ALONG GEORGIA AVENUE (STATE HIGHWAY 97)
 JV2626'FROM THE JUNCTION WITH STATE HIGHWAY 28 IN NORBECK TO THE GATE
 JV2626'OF HEAVEN CEMETERY, NEAR THE JUNCTION OF GEORGIA AVENUE AND
 JV2626'CONNECTICUT AVENUE, 800 FEET NORTH OF THE CEMETERY OFFICE
 JV2626'BUILDING, 170 FEET WEST OF THE CENTER OF AN INLET AT THE
 JV2626'JUNCTION OF ST. PETERS AVENUE AND IMMAC. CONCEPTION AVENUE,
 JV2626'121.8 FEET EAST OF THE CENTERLINE OF EXISTING HIGHWAY 97, 112
 JV2626'FEET EAST OF THE CENTERLINE OF THE FUTURE NORTH BOUND LANE OF
 JV2626'HIGHWAY 97, 46 FEET EAST OF A 4-INCH CEDAR TREE AND 7 FEET SOUTHEAST
 JV2626'OF A CHERRY TREE.  THE DISK IS SET IN THE TOP OF A CONCRETE
 JV2626'POST FLUSH WITH THE GROUND.  NOTE-- THIS BENCH MARK REPLACES
 JV2626'MARK DESIGNATED 2239 (WSSC) = 32 (MGS)
 JV2626
 JV2626                          STATION RECOVERY (1967)
 JV2626
 JV2626'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JV2626'RECOVERED IN GOOD CONDITION.
 JV2626
 JV2626                          STATION RECOVERY (1995)
 JV2626
 JV2626'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2626'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2613 ***********************************************************************
 JV2613  DESIGNATION -  2243
 JV2613  PID         -  JV2613
 JV2613  STATE/COUNTY-  MD/MONTGOMERY
 JV2613  COUNTRY     -  US
 JV2613  USGS QUAD   -  SANDY SPRING (2016)
 JV2613
 JV2613                         *CURRENT SURVEY CONTROL
 JV2613  ______________________________________________________________________
 JV2613* NAD 83(1986) POSITION- 39 08 54.     (N) 077 04 01.     (W)   SCALED
 JV2613* NAVD 88 ORTHO HEIGHT -   173.39  (+/-2cm)      568.9   (feet) VERTCON3
 JV2613  ______________________________________________________________________
 JV2613  GEOID HEIGHT    -        -31.819 (meters)                     GEOID18
 JV2613  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2613
 JV2613.The horizontal coordinates were scaled from a map and have
 JV2613.an estimated accuracy of +/- 6 seconds.
 JV2613
 JV2613.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2613.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2613
 JV2613.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2613.GEOID18 height accuracy estimate available here.
 JV2613
 JV2613.The vertical order pertains to the NGVD 29 superseded value.
 JV2613
 JV2613.Click photographs - Photos may exist for this station.
 JV2613
 JV2613;                    North         East    Units  Estimated Accuracy
 JV2613;SPC MD       -   164,480.      394,210.      MT  (+/- 180 meters Scaled)
 JV2613
 JV2613_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ213352(NAD 83)
 JV2613
 JV2613                          SUPERSEDED SURVEY CONTROL
 JV2613
 JV2613  NGVD 29 (11/26/84)  173.593  (m)          569.53   (f) ADJUSTED    2 0
 JV2613
 JV2613.Superseded values are not recommended for survey control.
 JV2613
 JV2613.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2613.See file dsdata.pdf to determine how the superseded data were derived.
 JV2613
 JV2613_MARKER: DD = SURVEY DISK
 JV2613_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2613_MARK LOGO: CGS+SS
 JV2613_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2613+STABILITY: SURFACE MOTION
 JV2613
 JV2613  HISTORY     - Date     Condition        Report By
 JV2613  HISTORY     - 1934     MONUMENTED       MDGS
 JV2613  HISTORY     - 1967     GOOD             MDSRC
 JV2613  HISTORY     - 1985     MARK NOT FOUND   USPSQD
 JV2613  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV2613
 JV2613                          STATION DESCRIPTION
 JV2613
 JV2613'DESCRIBED BY MD STATE ROADS COMM 1967
 JV2613'0.4 MI S FROM OLNEY.
 JV2613'ON GEORGIA AVENUE (STATE HIGHWAY 97), AT OLNEY INN, 20.5 FEET EAST
 JV2613'OF THE CENTERLINE OF THE HIGHWAY, AND 31.2 FEET SOUTH OF THE CENTER
 JV2613'OF THE SOUTH ENTRANCE TO THE INN.  A BRONZE DISC IN A CONCRETE POST.
 JV2613
 JV2613                          STATION RECOVERY (1985)
 JV2613
 JV2613'RECOVERY NOTE BY US POWER SQUADRON 1985
 JV2613'MARK NOT FOUND.
 JV2613
 JV2613                          STATION RECOVERY (1995)
 JV2613
 JV2613'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2613'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2621 ***********************************************************************
 JV2621  DESIGNATION -  2251 WSSC
 JV2621  PID         -  JV2621
 JV2621  STATE/COUNTY-  MD/MONTGOMERY
 JV2621  COUNTRY     -  US
 JV2621  USGS QUAD   -  KENSINGTON (2016)
 JV2621
 JV2621                         *CURRENT SURVEY CONTROL
 JV2621  ______________________________________________________________________
 JV2621* NAD 83(1986) POSITION- 39 06 06.     (N) 077 04 39.     (W)   SCALED
 JV2621* NAVD 88 ORTHO HEIGHT -   149.58  (+/-2cm)      490.7   (feet) VERTCON3
 JV2621  ______________________________________________________________________
 JV2621  GEOID HEIGHT    -        -31.817 (meters)                     GEOID18
 JV2621  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2621
 JV2621.The horizontal coordinates were scaled from a map and have
 JV2621.an estimated accuracy of +/- 6 seconds.
 JV2621
 JV2621.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2621.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2621
 JV2621.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2621.GEOID18 height accuracy estimate available here.
 JV2621
 JV2621.The vertical order pertains to the NGVD 29 superseded value.
 JV2621
 JV2621.Click photographs - Photos may exist for this station.
 JV2621
 JV2621;                    North         East    Units  Estimated Accuracy
 JV2621;SPC MD       -   159,300.      393,300.      MT  (+/- 180 meters Scaled)
 JV2621
 JV2621_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ203301(NAD 83)
 JV2621
 JV2621                          SUPERSEDED SURVEY CONTROL
 JV2621
 JV2621  NGVD 29 (11/26/84)  149.796  (m)          491.46   (f) ADJUSTED    2 0
 JV2621
 JV2621.Superseded values are not recommended for survey control.
 JV2621
 JV2621.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2621.See file dsdata.pdf to determine how the superseded data were derived.
 JV2621
 JV2621_MARKER: Z = SEE DESCRIPTION
 JV2621_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2621_SP_SET: TREE
 JV2621_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2621
 JV2621  HISTORY     - Date     Condition        Report By
 JV2621  HISTORY     - UNK      MONUMENTED       WSSC
 JV2621  HISTORY     - 1967     GOOD             MDSRC
 JV2621  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2621
 JV2621                          STATION DESCRIPTION
 JV2621
 JV2621'DESCRIBED BY MD STATE ROADS COMM 1967
 JV2621'0.5 MI S FROM NORBECK.
 JV2621'ON GEORGIA AVENUE (STATE HIGHWAY 97) ON THE WEST SIDE OF THE
 JV2621'HIGHWAY, ON THE MANOR GOLF CLUB GROUNDS, NEAR HOLE 14, AND IN
 JV2621'THE SOUTHWEST ROOT OF A 24-INCH OAK TREE, 44 FEET NORTHWEST OF
 JV2621'C AND P POLE 152. LAG SCREW AND WASHER.
 JV2621
 JV2621                          STATION RECOVERY (1995)
 JV2621
 JV2621'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2621'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2624 ***********************************************************************
 JV2624  DESIGNATION -  2252 WSSC
 JV2624  PID         -  JV2624
 JV2624  STATE/COUNTY-  MD/MONTGOMERY
 JV2624  COUNTRY     -  US
 JV2624  USGS QUAD   -  KENSINGTON (2016)
 JV2624
 JV2624                         *CURRENT SURVEY CONTROL
 JV2624  ______________________________________________________________________
 JV2624* NAD 83(1986) POSITION- 39 05 25.     (N) 077 04 50.     (W)   SCALED
 JV2624* NAVD 88 ORTHO HEIGHT -   134.40  (+/-2cm)      440.9   (feet) VERTCON3
 JV2624  ______________________________________________________________________
 JV2624  GEOID HEIGHT    -        -31.819 (meters)                     GEOID18
 JV2624  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2624
 JV2624.The horizontal coordinates were scaled from a map and have
 JV2624.an estimated accuracy of +/- 6 seconds.
 JV2624
 JV2624.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2624.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2624
 JV2624.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2624.GEOID18 height accuracy estimate available here.
 JV2624
 JV2624.The vertical order pertains to the NGVD 29 superseded value.
 JV2624
 JV2624.Click photographs - Photos may exist for this station.
 JV2624
 JV2624;                    North         East    Units  Estimated Accuracy
 JV2624;SPC MD       -   158,030.      393,030.      MT  (+/- 180 meters Scaled)
 JV2624
 JV2624_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ200288(NAD 83)
 JV2624
 JV2624                          SUPERSEDED SURVEY CONTROL
 JV2624
 JV2624  NGVD 29 (11/26/84)  134.619  (m)          441.66   (f) ADJUSTED    2 0
 JV2624
 JV2624.Superseded values are not recommended for survey control.
 JV2624
 JV2624.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2624.See file dsdata.pdf to determine how the superseded data were derived.
 JV2624
 JV2624_MARKER: Z = SEE DESCRIPTION
 JV2624_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2624_SP_SET: TREE
 JV2624_STAMPING: WSSC 2252
 JV2624_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2624
 JV2624  HISTORY     - Date     Condition        Report By
 JV2624  HISTORY     - UNK      MONUMENTED       WSSC
 JV2624  HISTORY     - 1944     GOOD             WSSC
 JV2624  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2624
 JV2624                          STATION DESCRIPTION
 JV2624
 JV2624'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2624'1.4 MI S FROM NORBECK.
 JV2624'ON GEORGIA AVENUE (STATE HIGHWAY 97), 0.5 MILE NORTH OF CEDAR
 JV2624'LANE (ASPEN GARDEN), ON THE EAST SIDE OF THE HIGHWAY, AND IN
 JV2624'THE EAST ROOT OF A 30-INCH OAK TREE. LAG SCREW AND WASHER.
 JV2624
 JV2624                          STATION RECOVERY (1995)
 JV2624
 JV2624'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2624'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2631 ***********************************************************************
 JV2631  DESIGNATION -  2254 WSSC
 JV2631  PID         -  JV2631
 JV2631  STATE/COUNTY-  MD/MONTGOMERY
 JV2631  COUNTRY     -  US
 JV2631  USGS QUAD   -  KENSINGTON (2016)
 JV2631
 JV2631                         *CURRENT SURVEY CONTROL
 JV2631  ______________________________________________________________________
 JV2631* NAD 83(1986) POSITION- 39 04 00.     (N) 077 03 35.     (W)   SCALED
 JV2631* NAVD 88 ORTHO HEIGHT -   124.41  (+/-2cm)      408.2   (feet) VERTCON3
 JV2631  ______________________________________________________________________
 JV2631  GEOID HEIGHT    -        -31.872 (meters)                     GEOID18
 JV2631  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2631
 JV2631.The horizontal coordinates were scaled from a map and have
 JV2631.an estimated accuracy of +/- 6 seconds.
 JV2631
 JV2631.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2631.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2631
 JV2631.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2631.GEOID18 height accuracy estimate available here.
 JV2631
 JV2631.The vertical order pertains to the NGVD 29 superseded value.
 JV2631
 JV2631.Click photographs - Photos may exist for this station.
 JV2631
 JV2631;                    North         East    Units  Estimated Accuracy
 JV2631;SPC MD       -   155,410.      394,830.      MT  (+/- 180 meters Scaled)
 JV2631
 JV2631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ218261(NAD 83)
 JV2631
 JV2631                          SUPERSEDED SURVEY CONTROL
 JV2631
 JV2631  NGVD 29 (11/26/84)  124.630  (m)          408.89   (f) ADJUSTED    2 0
 JV2631
 JV2631.Superseded values are not recommended for survey control.
 JV2631
 JV2631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2631.See file dsdata.pdf to determine how the superseded data were derived.
 JV2631
 JV2631_MARKER: Q = CHISELED SQUARE
 JV2631_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2631_SP_SET: HEADWALL
 JV2631_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2631
 JV2631  HISTORY     - Date     Condition        Report By
 JV2631  HISTORY     - UNK      MONUMENTED       WSSC
 JV2631  HISTORY     - 1944     GOOD             WSSC
 JV2631  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2631
 JV2631                          STATION DESCRIPTION
 JV2631
 JV2631'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2631'0.5 MI N FROM GLENMONT.
 JV2631'ON GEORGIA AVENUE (STATE HIGHWAY 97), JUST NORTH OF A ROAD
 JV2631'LEADING WEST TO GLENMONT HEIGHTS, NEAR A TELEPHONE POLE, ON
 JV2631'THE WEST SIDE OF THE HIGHWAY, AND ON THE CENTER OF THE TOP OF
 JV2631'A HEADWALL.
 JV2631
 JV2631                          STATION RECOVERY (1995)
 JV2631
 JV2631'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2631'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2629 ***********************************************************************
 JV2629  DESIGNATION -  2255 WSSC
 JV2629  PID         -  JV2629
 JV2629  STATE/COUNTY-  MD/MONTGOMERY
 JV2629  COUNTRY     -  US
 JV2629  USGS QUAD   -  KENSINGTON (2016)
 JV2629
 JV2629                         *CURRENT SURVEY CONTROL
 JV2629  ______________________________________________________________________
 JV2629* NAD 83(1986) POSITION- 39 04 34.     (N) 077 04 10.     (W)   SCALED
 JV2629* NAVD 88 ORTHO HEIGHT -   101.62  (+/-2cm)      333.4   (feet) VERTCON3
 JV2629  ______________________________________________________________________
 JV2629  GEOID HEIGHT    -        -31.848 (meters)                     GEOID18
 JV2629  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2629
 JV2629.The horizontal coordinates were scaled from a map and have
 JV2629.an estimated accuracy of +/- 6 seconds.
 JV2629
 JV2629.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2629.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2629
 JV2629.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2629.GEOID18 height accuracy estimate available here.
 JV2629
 JV2629.The vertical order pertains to the NGVD 29 superseded value.
 JV2629
 JV2629.Click photographs - Photos may exist for this station.
 JV2629
 JV2629;                    North         East    Units  Estimated Accuracy
 JV2629;SPC MD       -   156,460.      393,990.      MT  (+/- 180 meters Scaled)
 JV2629
 JV2629_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ209272(NAD 83)
 JV2629
 JV2629                          SUPERSEDED SURVEY CONTROL
 JV2629
 JV2629  NGVD 29 (11/26/84)  101.838  (m)          334.11   (f) ADJUSTED    2 0
 JV2629
 JV2629.Superseded values are not recommended for survey control.
 JV2629
 JV2629.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2629.See file dsdata.pdf to determine how the superseded data were derived.
 JV2629
 JV2629_MARKER: Q = CHISELED SQUARE
 JV2629_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2629_SP_SET: CULVERT
 JV2629_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2629
 JV2629  HISTORY     - Date     Condition        Report By
 JV2629  HISTORY     - UNK      MONUMENTED       WSSC
 JV2629  HISTORY     - 1944     GOOD             WSSC
 JV2629  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2629
 JV2629                          STATION DESCRIPTION
 JV2629
 JV2629'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2629'0.5 MI S FROM ASPEN HILL.
 JV2629'ON GEORGIA AVENUE (STATE HIGHWAY 97), AT A CULVERT, AND ON THE
 JV2629'CENTER OF THE TOP OF THE WEST HEADWALL.
 JV2629
 JV2629                          STATION RECOVERY (1995)
 JV2629
 JV2629'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2629'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1452 ***********************************************************************
 JV1452  DESIGNATION -  2257 WSSC
 JV1452  PID         -  JV1452
 JV1452  STATE/COUNTY-  MD/MONTGOMERY
 JV1452  COUNTRY     -  US
 JV1452  USGS QUAD   -  BELTSVILLE (2016)
 JV1452
 JV1452                         *CURRENT SURVEY CONTROL
 JV1452  ______________________________________________________________________
 JV1452* NAD 83(1986) POSITION- 39 06 02.     (N) 076 56 31.     (W)   SCALED
 JV1452* NAVD 88 ORTHO HEIGHT -   147.31  (+/-2cm)      483.3   (feet) VERTCON3
 JV1452  ______________________________________________________________________
 JV1452  GEOID HEIGHT    -        -32.054 (meters)                     GEOID18
 JV1452  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1452
 JV1452.The horizontal coordinates were scaled from a map and have
 JV1452.an estimated accuracy of +/- 6 seconds.
 JV1452
 JV1452.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1452.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1452
 JV1452.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1452.GEOID18 height accuracy estimate available here.
 JV1452
 JV1452.The vertical order pertains to the NGVD 29 superseded value.
 JV1452
 JV1452.Click photographs - Photos may exist for this station.
 JV1452
 JV1452;                    North         East    Units  Estimated Accuracy
 JV1452;SPC MD       -   159,170.      405,020.      MT  (+/- 180 meters Scaled)
 JV1452
 JV1452_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ320297(NAD 83)
 JV1452
 JV1452                          SUPERSEDED SURVEY CONTROL
 JV1452
 JV1452  NGVD 29 (11/26/84)  147.513  (m)          483.97   (f) ADJUSTED    2 0
 JV1452
 JV1452.Superseded values are not recommended for survey control.
 JV1452
 JV1452.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1452.See file dsdata.pdf to determine how the superseded data were derived.
 JV1452
 JV1452_MARKER: Q = CHISELED SQUARE
 JV1452_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1452_SP_SET: CULVERT
 JV1452_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1452
 JV1452  HISTORY     - Date     Condition        Report By
 JV1452  HISTORY     - UNK      MONUMENTED       WSSC
 JV1452  HISTORY     - 1939     GOOD             WSSC
 JV1452
 JV1452                          STATION DESCRIPTION
 JV1452
 JV1452'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1452'0.5 MI S FROM BURTONSVILLE.
 JV1452'0.5 MILE SOUTH OF BURTONSVILLE CHURCH, ON COLUMBIA ROAD, AT A
 JV1452'CONCRETE CULVERT UNDER THE ROAD, AND ON THE TOP OF THE WEST
 JV1452'HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1454 ***********************************************************************
 JV1454  DESIGNATION -  2258 WSSC
 JV1454  PID         -  JV1454
 JV1454  STATE/COUNTY-  MD/MONTGOMERY
 JV1454  COUNTRY     -  US
 JV1454  USGS QUAD   -  BELTSVILLE (2016)
 JV1454
 JV1454                         *CURRENT SURVEY CONTROL
 JV1454  ______________________________________________________________________
 JV1454* NAD 83(1986) POSITION- 39 05 35.     (N) 076 56 49.     (W)   SCALED
 JV1454* NAVD 88 ORTHO HEIGHT -   141.81  (+/-2cm)      465.3   (feet) VERTCON3
 JV1454  ______________________________________________________________________
 JV1454  GEOID HEIGHT    -        -32.049 (meters)                     GEOID18
 JV1454  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1454
 JV1454.The horizontal coordinates were scaled from a map and have
 JV1454.an estimated accuracy of +/- 6 seconds.
 JV1454
 JV1454.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1454.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1454
 JV1454.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1454.GEOID18 height accuracy estimate available here.
 JV1454
 JV1454.The vertical order pertains to the NGVD 29 superseded value.
 JV1454
 JV1454.Click photographs - Photos may exist for this station.
 JV1454
 JV1454;                    North         East    Units  Estimated Accuracy
 JV1454;SPC MD       -   158,340.      404,590.      MT  (+/- 180 meters Scaled)
 JV1454
 JV1454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ316289(NAD 83)
 JV1454
 JV1454                          SUPERSEDED SURVEY CONTROL
 JV1454
 JV1454  NGVD 29 (11/26/84)  142.014  (m)          465.92   (f) ADJUSTED    2 0
 JV1454
 JV1454.Superseded values are not recommended for survey control.
 JV1454
 JV1454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1454.See file dsdata.pdf to determine how the superseded data were derived.
 JV1454
 JV1454_MARKER: Q = CHISELED SQUARE
 JV1454_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1454_SP_SET: CULVERT
 JV1454_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1454
 JV1454  HISTORY     - Date     Condition        Report By
 JV1454  HISTORY     - UNK      MONUMENTED       WSSC
 JV1454  HISTORY     - 1939     GOOD             WSSC
 JV1454
 JV1454                          STATION DESCRIPTION
 JV1454
 JV1454'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1454'1.1 MI S FROM BURTONSVILLE.
 JV1454'ON THE EAST SIDE OF COLUMBIA ROAD, NORTH OF A HOUSE, AT A
 JV1454'CONCRETE CULVERT UNDER THE ROAD, AND ON THE EAST HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1448 ***********************************************************************
 JV1448  DESIGNATION -  2259 WSSC
 JV1448  PID         -  JV1448
 JV1448  STATE/COUNTY-  MD/MONTGOMERY
 JV1448  COUNTRY     -  US
 JV1448  USGS QUAD   -  BELTSVILLE (2016)
 JV1448
 JV1448                         *CURRENT SURVEY CONTROL
 JV1448  ______________________________________________________________________
 JV1448* NAD 83(1986) POSITION- 39 04 08.     (N) 076 57 42.     (W)   SCALED
 JV1448* NAVD 88 ORTHO HEIGHT -   115.13  (+/-2cm)      377.7   (feet) VERTCON3
 JV1448  ______________________________________________________________________
 JV1448  GEOID HEIGHT    -        -32.036 (meters)                     GEOID18
 JV1448  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1448
 JV1448.The horizontal coordinates were scaled from a map and have
 JV1448.an estimated accuracy of +/- 6 seconds.
 JV1448
 JV1448.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1448.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1448
 JV1448.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1448.GEOID18 height accuracy estimate available here.
 JV1448
 JV1448.The vertical order pertains to the NGVD 29 superseded value.
 JV1448
 JV1448.Click photographs - Photos may exist for this station.
 JV1448
 JV1448;                    North         East    Units  Estimated Accuracy
 JV1448;SPC MD       -   155,650.      403,320.      MT  (+/- 180 meters Scaled)
 JV1448
 JV1448_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ302262(NAD 83)
 JV1448
 JV1448                          SUPERSEDED SURVEY CONTROL
 JV1448
 JV1448  NGVD 29 (11/26/84)  115.344  (m)          378.42   (f) ADJUSTED    2 0
 JV1448
 JV1448.Superseded values are not recommended for survey control.
 JV1448
 JV1448.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1448.See file dsdata.pdf to determine how the superseded data were derived.
 JV1448
 JV1448_MARKER: Z = SEE DESCRIPTION
 JV1448_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1448_SP_SET: TREE
 JV1448_STAMPING: WSSC 2259
 JV1448_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1448
 JV1448  HISTORY     - Date     Condition        Report By
 JV1448  HISTORY     - UNK      MONUMENTED       WSSC
 JV1448  HISTORY     - 1939     GOOD             WSSC
 JV1448
 JV1448                          STATION DESCRIPTION
 JV1448
 JV1448'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1448'0.6 MI S FROM FAIRLAND.
 JV1448'ON COLUMBIA ROAD, BETWEEN TWO DRIVES (ONE LEADING EAST AND ONE
 JV1448'LEADING WEST), ON THE WEST SIDE OF COLUMBIA ROAD, JUST NORTH OF
 JV1448'THE DRIVE LEADING WEST, AND IN THE EAST ROOT OF A 24-INCH OAK
 JV1448'TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2683 ***********************************************************************
 JV2683  DESIGNATION -  2262 WSSC
 JV2683  PID         -  JV2683
 JV2683  STATE/COUNTY-  MD/MONTGOMERY
 JV2683  COUNTRY     -  US
 JV2683  USGS QUAD   -  KENSINGTON (2016)
 JV2683
 JV2683                         *CURRENT SURVEY CONTROL
 JV2683  ______________________________________________________________________
 JV2683* NAD 83(1986) POSITION- 39 03 53.     (N) 077 02 08.     (W)   SCALED
 JV2683* NAVD 88 ORTHO HEIGHT -   119.59  (+/-2cm)      392.4   (feet) VERTCON3
 JV2683  ______________________________________________________________________
 JV2683  GEOID HEIGHT    -        -31.918 (meters)                     GEOID18
 JV2683  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2683
 JV2683.The horizontal coordinates were scaled from a map and have
 JV2683.an estimated accuracy of +/- 6 seconds.
 JV2683
 JV2683.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2683.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2683
 JV2683.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2683.GEOID18 height accuracy estimate available here.
 JV2683
 JV2683.The vertical order pertains to the NGVD 29 superseded value.
 JV2683
 JV2683.Click photographs - Photos may exist for this station.
 JV2683
 JV2683;                    North         East    Units  Estimated Accuracy
 JV2683;SPC MD       -   155,190.      396,920.      MT  (+/- 180 meters Scaled)
 JV2683
 JV2683_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ238259(NAD 83)
 JV2683
 JV2683                          SUPERSEDED SURVEY CONTROL
 JV2683
 JV2683  NGVD 29 (11/26/84)  119.803  (m)          393.05   (f) ADJUSTED    2 0
 JV2683
 JV2683.Superseded values are not recommended for survey control.
 JV2683
 JV2683.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2683.See file dsdata.pdf to determine how the superseded data were derived.
 JV2683
 JV2683_MARKER: Z = SEE DESCRIPTION
 JV2683_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2683_SP_SET: TREE
 JV2683_STAMPING: WSSC 2262
 JV2683_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2683
 JV2683  HISTORY     - Date     Condition        Report By
 JV2683  HISTORY     - UNK      MONUMENTED       WSSC
 JV2683  HISTORY     - 1951     GOOD             CGS
 JV2683  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2683
 JV2683                          STATION DESCRIPTION
 JV2683
 JV2683'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2683'0.9 MI NE FROM GLENMONT.
 JV2683'0.4 MILE WEST OF NORTHWEST BRANCH, AT THE TOP OF A HILL, AT THE
 JV2683'JUNCTION OF A ROAD LEADING NORTHWEST AT THE FRANCIS BUCHANON
 JV2683'PROPERTY, AND IN THE SOUTHWEST ROOT OF A 20-INCH LOCUST TREE.
 JV2683'LAG SCREW AND WASHER.
 JV2683
 JV2683                          STATION RECOVERY (1995)
 JV2683
 JV2683'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2683'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2684 ***********************************************************************
 JV2684  DESIGNATION -  2263 WSSC
 JV2684  PID         -  JV2684
 JV2684  STATE/COUNTY-  MD/MONTGOMERY
 JV2684  COUNTRY     -  US
 JV2684  USGS QUAD   -  KENSINGTON (2016)
 JV2684
 JV2684                         *CURRENT SURVEY CONTROL
 JV2684  ______________________________________________________________________
 JV2684* NAD 83(1986) POSITION- 39 03 37.     (N) 077 02 42.     (W)   SCALED
 JV2684* NAVD 88 ORTHO HEIGHT -   127.598 (meters)      418.63  (feet) ADJUSTED
 JV2684  ______________________________________________________________________
 JV2684  GEOID HEIGHT    -        -31.902 (meters)                     GEOID18
 JV2684  DYNAMIC HEIGHT  -        127.529 (meters)      418.40  (feet) COMP
 JV2684  MODELED GRAVITY -    980,086.7   (mgal)                       NAVD 88
 JV2684
 JV2684  VERT ORDER      -  SECOND    CLASS 0
 JV2684
 JV2684.The horizontal coordinates were scaled from a map and have
 JV2684.an estimated accuracy of +/- 6 seconds.
 JV2684
 JV2684.The orthometric height was determined by differential leveling and
 JV2684.adjusted by the NATIONAL GEODETIC SURVEY
 JV2684.in June 1991.
 JV2684
 JV2684.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2684.GEOID18 height accuracy estimate available here.
 JV2684
 JV2684.Click photographs - Photos may exist for this station.
 JV2684
 JV2684.The dynamic height is computed by dividing the NAVD 88
 JV2684.geopotential number by the normal gravity value computed on the
 JV2684.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2684.degrees latitude (g = 980.6199 gals.).
 JV2684
 JV2684.The modeled gravity was interpolated from observed gravity values.
 JV2684
 JV2684;                    North         East    Units  Estimated Accuracy
 JV2684;SPC MD       -   154,700.      396,110.      MT  (+/- 180 meters Scaled)
 JV2684
 JV2684_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ230254(NAD 83)
 JV2684
 JV2684                          SUPERSEDED SURVEY CONTROL
 JV2684
 JV2684  NGVD 29 (11/26/84)  127.817  (m)          419.35   (f) ADJUSTED    2 0
 JV2684
 JV2684.Superseded values are not recommended for survey control.
 JV2684
 JV2684.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2684.See file dsdata.pdf to determine how the superseded data were derived.
 JV2684
 JV2684_MARKER: Q = CHISELED SQUARE
 JV2684_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2684_SP_SET: CULVERT
 JV2684_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2684
 JV2684  HISTORY     - Date     Condition        Report By
 JV2684  HISTORY     - UNK      MONUMENTED       WSSC
 JV2684  HISTORY     - 1951     GOOD             CGS
 JV2684  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2684
 JV2684                          STATION DESCRIPTION
 JV2684
 JV2684'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2684'0.4 MI NE FROM GLENMONT.
 JV2684'0.35 MILE NORTHEAST ALONG STATE HIGHWAY 183 FROM THE JUNCTION
 JV2684'WITH STATE HIGHWAY 97 AT GLENMONT, MONTGOMERY COUNTY, AT A
 JV2684'CULVERT, AND IN THE CENTER OF THE TOP OF THE NORTHWEST HEAD WALL.
 JV2684'A CHISELED SQUARE.
 JV2684
 JV2684                          STATION RECOVERY (1987)
 JV2684
 JV2684'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2684'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1030 ***********************************************************************
 JV1030  DESIGNATION -  2264
 JV1030  PID         -  JV1030
 JV1030  STATE/COUNTY-  MD/MONTGOMERY
 JV1030  COUNTRY     -  US
 JV1030  USGS QUAD   -  BELTSVILLE (2016)
 JV1030
 JV1030                         *CURRENT SURVEY CONTROL
 JV1030  ______________________________________________________________________
 JV1030* NAD 83(1986) POSITION- 39 04 40.     (N) 076 59 08.     (W)   SCALED
 JV1030* NAVD 88 ORTHO HEIGHT -   124.05  (+/-2cm)      407.0   (feet) VERTCON3
 JV1030  ______________________________________________________________________
 JV1030  GEOID HEIGHT    -        -31.993 (meters)                     GEOID18
 JV1030  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1030
 JV1030.The horizontal coordinates were scaled from a map and have
 JV1030.an estimated accuracy of +/- 6 seconds.
 JV1030
 JV1030.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1030.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1030
 JV1030.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1030.GEOID18 height accuracy estimate available here.
 JV1030
 JV1030.The vertical order pertains to the NGVD 29 superseded value.
 JV1030
 JV1030.Click photographs - Photos may exist for this station.
 JV1030
 JV1030;                    North         East    Units  Estimated Accuracy
 JV1030;SPC MD       -   156,640.      401,250.      MT  (+/- 180 meters Scaled)
 JV1030
 JV1030_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ282272(NAD 83)
 JV1030
 JV1030                          SUPERSEDED SURVEY CONTROL
 JV1030
 JV1030  NGVD 29 (11/26/84)  124.256  (m)          407.66   (f) ADJUSTED    2 0
 JV1030
 JV1030.Superseded values are not recommended for survey control.
 JV1030
 JV1030.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1030.See file dsdata.pdf to determine how the superseded data were derived.
 JV1030
 JV1030_MARKER: Z = SEE DESCRIPTION
 JV1030_SETTING: 0 = UNSPECIFIED SETTING
 JV1030_SP_SET: TREE
 JV1030_MARK LOGO: WSSC
 JV1030
 JV1030  HISTORY     - Date     Condition        Report By
 JV1030  HISTORY     - UNK      MONUMENTED       WSSC
 JV1030  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1030
 JV1030                          STATION DESCRIPTION
 JV1030
 JV1030'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1030'1 MI E FROM COLESVILLE.
 JV1030'SEARCHED FOR BY MEANS OF A PHOTOSTAT COPY OF THE ORIGINAL
 JV1030'W.S.S.D. DESCRIPTION, WHICH PLACES THE MARK ABOUT 0.5 MILE WEST
 JV1030'ALONG THE FAIRLAND-COLESVILLE ROAD FROM THE BRIDGE OVER PAINT
 JV1030'BRANCH AND ON THE ROOT OF A LARGE CHERRY TREE ON THE NORTH SIDE
 JV1030'OF THE ROAD, AND 150 FEET EAST OF THE TOP OF THE HILL.  NOT
 JV1030'RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1028 ***********************************************************************
 JV1028  DESIGNATION -  2265 WSSC
 JV1028  PID         -  JV1028
 JV1028  STATE/COUNTY-  MD/MONTGOMERY
 JV1028  COUNTRY     -  US
 JV1028  USGS QUAD   -  BELTSVILLE (2016)
 JV1028
 JV1028                         *CURRENT SURVEY CONTROL
 JV1028  ______________________________________________________________________
 JV1028* NAD 83(1986) POSITION- 39 04 37.     (N) 076 58 02.     (W)   SCALED
 JV1028* NAVD 88 ORTHO HEIGHT -   131.17  (+/-2cm)      430.3   (feet) VERTCON3
 JV1028  ______________________________________________________________________
 JV1028  GEOID HEIGHT    -        -32.024 (meters)                     GEOID18
 JV1028  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1028
 JV1028.The horizontal coordinates were scaled from a map and have
 JV1028.an estimated accuracy of +/- 6 seconds.
 JV1028
 JV1028.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1028.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1028
 JV1028.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1028.GEOID18 height accuracy estimate available here.
 JV1028
 JV1028.The vertical order pertains to the NGVD 29 superseded value.
 JV1028
 JV1028.Click photographs - Photos may exist for this station.
 JV1028
 JV1028;                    North         East    Units  Estimated Accuracy
 JV1028;SPC MD       -   156,550.      402,840.      MT  (+/- 180 meters Scaled)
 JV1028
 JV1028_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ298271(NAD 83)
 JV1028
 JV1028                          SUPERSEDED SURVEY CONTROL
 JV1028
 JV1028  NGVD 29 (11/26/84)  131.373  (m)          431.01   (f) ADJUSTED    2 0
 JV1028
 JV1028.Superseded values are not recommended for survey control.
 JV1028
 JV1028.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1028.See file dsdata.pdf to determine how the superseded data were derived.
 JV1028
 JV1028_MARKER: Z = SEE DESCRIPTION
 JV1028_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1028_SP_SET: TREE
 JV1028_STAMPING: WSSC 2265
 JV1028_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1028
 JV1028  HISTORY     - Date     Condition        Report By
 JV1028  HISTORY     - UNK      MONUMENTED       WSSC
 JV1028  HISTORY     - 1939     GOOD             WSSC
 JV1028  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1028
 JV1028                          STATION DESCRIPTION
 JV1028
 JV1028'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1028'0.5 MI W FROM FAIRLAND.
 JV1028'ON FAIRLAND ROAD, 0.5 MILE EAST OF POINT BRANCH, AT THE TOP OF A
 JV1028'HILL, ON THE NORTH SIDE OF THE ROAD, AND IN THE SOUTHWEST ROOT
 JV1028'OF AN 18-INCH CHERRY TREE.
 JV1028
 JV1028                          STATION RECOVERY (1951)
 JV1028
 JV1028'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV1028'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1023 ***********************************************************************
 JV1023  DESIGNATION -  2267 WSSC
 JV1023  PID         -  JV1023
 JV1023  STATE/COUNTY-  MD/MONTGOMERY
 JV1023  COUNTRY     -  US
 JV1023  USGS QUAD   -  BELTSVILLE (2016)
 JV1023
 JV1023                         *CURRENT SURVEY CONTROL
 JV1023  ______________________________________________________________________
 JV1023* NAD 83(1986) POSITION- 39 03 58.     (N) 076 56 45.     (W)   SCALED
 JV1023* NAVD 88 ORTHO HEIGHT -   100.12  (+/-2cm)      328.5   (feet) VERTCON3
 JV1023  ______________________________________________________________________
 JV1023  GEOID HEIGHT    -        -32.066 (meters)                     GEOID18
 JV1023  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1023
 JV1023.The horizontal coordinates were scaled from a map and have
 JV1023.an estimated accuracy of +/- 6 seconds.
 JV1023
 JV1023.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1023.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1023
 JV1023.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1023.GEOID18 height accuracy estimate available here.
 JV1023
 JV1023.The vertical order pertains to the NGVD 29 superseded value.
 JV1023
 JV1023.Click photographs - Photos may exist for this station.
 JV1023
 JV1023;                    North         East    Units  Estimated Accuracy
 JV1023;SPC MD       -   155,350.      404,690.      MT  (+/- 180 meters Scaled)
 JV1023
 JV1023_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ316259(NAD 83)
 JV1023
 JV1023                          SUPERSEDED SURVEY CONTROL
 JV1023
 JV1023  NGVD 29 (11/26/84)  100.336  (m)          329.19   (f) ADJUSTED    2 0
 JV1023
 JV1023.Superseded values are not recommended for survey control.
 JV1023
 JV1023.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1023.See file dsdata.pdf to determine how the superseded data were derived.
 JV1023
 JV1023_MARKER: Z = SEE DESCRIPTION
 JV1023_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1023_SP_SET: TREE
 JV1023_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1023
 JV1023  HISTORY     - Date     Condition        Report By
 JV1023  HISTORY     - UNK      MONUMENTED       WSSC
 JV1023  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1023  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1023
 JV1023                          STATION DESCRIPTION
 JV1023
 JV1023'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1023'0.9 MI SE FROM FAIRLAND.
 JV1023'THIS MARK WAS SEARCHED FOR BY MEANS OF A PHOTOSTAT COPY OF THE
 JV1023'ORIGINAL W.S.S.D. DESCRIPTION, WHICH SHOWS THE MARK TO BE ON THE
 JV1023'NORTHEAST ROOT OF A 10-INCH TWIN OAK ON THE SOUTH SIDE OF THE
 JV1023'FAIRLAND-BELTSVILLE ROAD (NOW BIGELOW ROAD) AT A DISTANCE OF
 JV1023'0.9 MILE FROM FAIRLAND.  QUITE THOROUGH SEARCH AND A DETAILED
 JV1023'INSPECTION OF SEVERAL LIKELY TWIN OAKS FAILED TO PRODUCE THE
 JV1023'MARK.
 JV1023
 JV1023                          STATION RECOVERY (1951)
 JV1023
 JV1023'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV1023'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1021 ***********************************************************************
 JV1021  DESIGNATION -  2268 WSSC
 JV1021  PID         -  JV1021
 JV1021  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1021  COUNTRY     -  US
 JV1021  USGS QUAD   -  BELTSVILLE (2016)
 JV1021
 JV1021                         *CURRENT SURVEY CONTROL
 JV1021  ______________________________________________________________________
 JV1021* NAD 83(1986) POSITION- 39 03 42.     (N) 076 55 53.     (W)   SCALED
 JV1021* NAVD 88 ORTHO HEIGHT -    78.31  (+/-2cm)      256.9   (feet) VERTCON3
 JV1021  ______________________________________________________________________
 JV1021  GEOID HEIGHT    -        -32.096 (meters)                     GEOID18
 JV1021  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1021
 JV1021.The horizontal coordinates were scaled from a map and have
 JV1021.an estimated accuracy of +/- 6 seconds.
 JV1021
 JV1021.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1021.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1021
 JV1021.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1021.GEOID18 height accuracy estimate available here.
 JV1021
 JV1021.The vertical order pertains to the NGVD 29 superseded value.
 JV1021
 JV1021.Click photographs - Photos may exist for this station.
 JV1021
 JV1021;                    North         East    Units  Estimated Accuracy
 JV1021;SPC MD       -   154,850.      405,940.      MT  (+/- 180 meters Scaled)
 JV1021
 JV1021_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ328253(NAD 83)
 JV1021
 JV1021                          SUPERSEDED SURVEY CONTROL
 JV1021
 JV1021  NGVD 29 (11/26/84)   78.522  (m)          257.62   (f) ADJUSTED    2 0
 JV1021
 JV1021.Superseded values are not recommended for survey control.
 JV1021
 JV1021.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1021.See file dsdata.pdf to determine how the superseded data were derived.
 JV1021
 JV1021_MARKER: Z = SEE DESCRIPTION
 JV1021_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1021_SP_SET: TREE
 JV1021_STAMPING: WSSC 2268
 JV1021_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1021
 JV1021  HISTORY     - Date     Condition        Report By
 JV1021  HISTORY     - UNK      MONUMENTED       WSSC
 JV1021  HISTORY     - 1939     GOOD             CGS
 JV1021  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV1021
 JV1021                          STATION DESCRIPTION
 JV1021
 JV1021'DESCRIBED BY COAST AND GEODETIC SURVEY 1939
 JV1021'2.4 MI NW FROM BELTSVILLE.
 JV1021'ON THE FAIRLAND-BELTSVILLE ROAD, 0.4 MILE SOUTHEAST OF THE
 JV1021'MONTGOMERY-PRINCE GEORGES COUNTY LINE, AT THE TOP OF A HILL, ON
 JV1021'THE SOUTH SIDE OF THE ROAD, IN THE CORNER OF THE WOODS, AND IN
 JV1021'THE NORTHEAST ROOT OF A 12-INCH OAK TREE.
 JV1021
 JV1021                          STATION RECOVERY (1951)
 JV1021
 JV1021'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV1021'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1017 ***********************************************************************
 JV1017  DESIGNATION -  2270 WSSC
 JV1017  PID         -  JV1017
 JV1017  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1017  COUNTRY     -  US
 JV1017  USGS QUAD   -  BELTSVILLE (2016)
 JV1017
 JV1017                         *CURRENT SURVEY CONTROL
 JV1017  ______________________________________________________________________
 JV1017* NAD 83(1986) POSITION- 39 02 37.     (N) 076 54 43.     (W)   SCALED
 JV1017* NAVD 88 ORTHO HEIGHT -    52.252 (meters)      171.43  (feet) ADJUSTED
 JV1017  ______________________________________________________________________
 JV1017  GEOID HEIGHT    -        -32.144 (meters)                     GEOID18
 JV1017  DYNAMIC HEIGHT  -         52.224 (meters)      171.34  (feet) COMP
 JV1017  MODELED GRAVITY -    980,102.7   (mgal)                       NAVD 88
 JV1017
 JV1017  VERT ORDER      -  SECOND    CLASS 0
 JV1017
 JV1017.The horizontal coordinates were scaled from a map and have
 JV1017.an estimated accuracy of +/- 6 seconds.
 JV1017
 JV1017.The orthometric height was determined by differential leveling and
 JV1017.adjusted by the NATIONAL GEODETIC SURVEY
 JV1017.in June 1991.
 JV1017
 JV1017.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1017.GEOID18 height accuracy estimate available here.
 JV1017
 JV1017.Click photographs - Photos may exist for this station.
 JV1017
 JV1017.The dynamic height is computed by dividing the NAVD 88
 JV1017.geopotential number by the normal gravity value computed on the
 JV1017.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1017.degrees latitude (g = 980.6199 gals.).
 JV1017
 JV1017.The modeled gravity was interpolated from observed gravity values.
 JV1017
 JV1017;                    North         East    Units  Estimated Accuracy
 JV1017;SPC MD       -   152,850.      407,620.      MT  (+/- 180 meters Scaled)
 JV1017
 JV1017_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ345233(NAD 83)
 JV1017
 JV1017                          SUPERSEDED SURVEY CONTROL
 JV1017
 JV1017  NGVD 29 (11/26/84)   52.478  (m)          172.17   (f) ADJUSTED    2 0
 JV1017
 JV1017.Superseded values are not recommended for survey control.
 JV1017
 JV1017.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1017.See file dsdata.pdf to determine how the superseded data were derived.
 JV1017
 JV1017_MARKER: Q = CHISELED SQUARE
 JV1017_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1017_SP_SET: CULVERT
 JV1017_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1017
 JV1017  HISTORY     - Date     Condition        Report By
 JV1017  HISTORY     - UNK      MONUMENTED       WSSC
 JV1017  HISTORY     - 1951     GOOD             CGS
 JV1017
 JV1017                          STATION DESCRIPTION
 JV1017
 JV1017'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1017'0.6 MI NW FROM BELTSVILLE.
 JV1017'0.6 MILE NORTHWEST ALONG STATE HIGHWAY 212 FROM ITS INTERSECTION
 JV1017'WITH U.S. HIGHWAY 1 AT BELTSVILLE, PRINCE GEORGES COUNTY, AT A
 JV1017'BEND IN STATE HIGHWAY 212 WHERE IT FORMS THE LONG SIDE OF A
 JV1017'TRIANGLE THE OTHER TWO SIDES OF WHICH (1951) WERE DIRT ROADS,
 JV1017'ON THE OUTSIDE OF THE CURVE IN STATE HIGHWAY 212, AND ON TOP OF
 JV1017'THE NORTHEAST HEADWALL OF A CULVERT.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1428 ***********************************************************************
 HV1428  DESIGNATION -  2280 WSSC
 HV1428  PID         -  HV1428
 HV1428  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1428  COUNTRY     -  US
 HV1428  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1428
 HV1428                         *CURRENT SURVEY CONTROL
 HV1428  ______________________________________________________________________
 HV1428* NAD 83(1986) POSITION- 38 59 24.     (N) 076 59 21.     (W)   SCALED
 HV1428* NAVD 88 ORTHO HEIGHT -    56.64  (+/-2cm)      185.8   (feet) VERTCON3
 HV1428  ______________________________________________________________________
 HV1428  GEOID HEIGHT    -        -32.033 (meters)                     GEOID18
 HV1428  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1428
 HV1428.The horizontal coordinates were scaled from a map and have
 HV1428.an estimated accuracy of +/- 6 seconds.
 HV1428
 HV1428.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1428.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1428
 HV1428.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1428.GEOID18 height accuracy estimate available here.
 HV1428
 HV1428.The vertical order pertains to the NGVD 29 superseded value.
 HV1428
 HV1428.Click photographs - Photos may exist for this station.
 HV1428
 HV1428;                    North         East    Units  Estimated Accuracy
 HV1428;SPC MD       -   146,900.      400,940.      MT  (+/- 180 meters Scaled)
 HV1428
 HV1428_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ277175(NAD 83)
 HV1428
 HV1428                          SUPERSEDED SURVEY CONTROL
 HV1428
 HV1428  NGVD 29 (11/26/84)   56.854  (m)          186.53   (f) ADJUSTED    2 0
 HV1428
 HV1428.Superseded values are not recommended for survey control.
 HV1428
 HV1428.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1428.See file dsdata.pdf to determine how the superseded data were derived.
 HV1428
 HV1428_MARKER: Q = CHISELED SQUARE
 HV1428_SETTING: 0 = UNSPECIFIED SETTING
 HV1428_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1428
 HV1428  HISTORY     - Date     Condition        Report By
 HV1428  HISTORY     - UNK      MONUMENTED       WSSC
 HV1428  HISTORY     - 1939     GOOD             WSSC
 HV1428
 HV1428                          STATION DESCRIPTION
 HV1428
 HV1428'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1428'0.3 MI SE FROM BROWNS CORNER.
 HV1428'IN PRINCE GEORGES COUNTY, ABOUT MILE SOUTHEAST ALONG UNIVERSITY
 HV1428'LANE (STATE HIGHWAY 193) FROM BROWNS CORNER, MONTGOMERY COUNTY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1431 ***********************************************************************
 HV1431  DESIGNATION -  2284 WSSC
 HV1431  PID         -  HV1431
 HV1431  STATE/COUNTY-  MD/MONTGOMERY
 HV1431  COUNTRY     -  US
 HV1431  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1431
 HV1431                         *CURRENT SURVEY CONTROL
 HV1431  ______________________________________________________________________
 HV1431* NAD 83(1986) POSITION- 38 59 00.     (N) 076 59 19.     (W)   SCALED
 HV1431* NAVD 88 ORTHO HEIGHT -    47.19  (+/-2cm)      154.8   (feet) VERTCON3
 HV1431  ______________________________________________________________________
 HV1431  GEOID HEIGHT    -        -32.038 (meters)                     GEOID18
 HV1431  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1431
 HV1431.The horizontal coordinates were scaled from a map and have
 HV1431.an estimated accuracy of +/- 6 seconds.
 HV1431
 HV1431.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1431.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1431
 HV1431.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1431.GEOID18 height accuracy estimate available here.
 HV1431
 HV1431.The vertical order pertains to the NGVD 29 superseded value.
 HV1431
 HV1431.Click photographs - Photos may exist for this station.
 HV1431
 HV1431;                    North         East    Units  Estimated Accuracy
 HV1431;SPC MD       -   146,160.      400,990.      MT  (+/- 180 meters Scaled)
 HV1431
 HV1431_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ277168(NAD 83)
 HV1431
 HV1431                          SUPERSEDED SURVEY CONTROL
 HV1431
 HV1431  NGVD 29 (11/26/84)   47.405  (m)          155.53   (f) ADJUSTED    2 0
 HV1431
 HV1431.Superseded values are not recommended for survey control.
 HV1431
 HV1431.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1431.See file dsdata.pdf to determine how the superseded data were derived.
 HV1431
 HV1431_MARKER: Z = SEE DESCRIPTION
 HV1431_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1431_SP_SET: WHITE OAK TREE ROOT
 HV1431_STAMPING: WSSC 2284
 HV1431_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1431
 HV1431  HISTORY     - Date     Condition        Report By
 HV1431  HISTORY     - UNK      MONUMENTED       WSSC
 HV1431  HISTORY     - 1939     GOOD             WSSC
 HV1431  HISTORY     - 20100314 MARK NOT FOUND   GEOCAC
 HV1431
 HV1431                          STATION DESCRIPTION
 HV1431
 HV1431'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1431'0.8 MI SE FROM BROWNS CORNER.
 HV1431'ON NEW HAMPSHIRE AVENUE, JUST NORTH OF THE JUNCTION OF LANCASTER
 HV1431'ROAD, ON THE EAST SIDE OF THE AVENUE, AND IN THE SOUTHWEST ROOT
 HV1431'OF A 24-INCH WHITE OAK TREE. LAG SCREW AND WASHER.
 HV1431
 HV1431                          STATION RECOVERY (2010)
 HV1431
 HV1431'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV1431'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3181 ***********************************************************************
 JV3181  DESIGNATION -  229.796 BORR
 JV3181  PID         -  JV3181
 JV3181  STATE/COUNTY-  MD/FREDERICK
 JV3181  COUNTRY     -  US
 JV3181  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3181
 JV3181                         *CURRENT SURVEY CONTROL
 JV3181  ______________________________________________________________________
 JV3181* NAD 83(1986) POSITION- 39 16 27.     (N) 077 32 36.     (W)   SCALED
 JV3181* NAVD 88 ORTHO HEIGHT -    69.835 (meters)      229.12  (feet) ADJUSTED
 JV3181  ______________________________________________________________________
 JV3181  GEOID HEIGHT    -        -32.730 (meters)                     GEOID18
 JV3181  DYNAMIC HEIGHT  -         69.797 (meters)      228.99  (feet) COMP
 JV3181  MODELED GRAVITY -    980,082.8   (mgal)                       NAVD 88
 JV3181
 JV3181  VERT ORDER      -  SECOND    CLASS 0
 JV3181
 JV3181.The horizontal coordinates were scaled from a map and have
 JV3181.an estimated accuracy of +/- 6 seconds.
 JV3181
 JV3181.The orthometric height was determined by differential leveling and
 JV3181.adjusted by the NATIONAL GEODETIC SURVEY
 JV3181.in June 1991.
 JV3181
 JV3181.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3181.GEOID18 height accuracy estimate available here.
 JV3181
 JV3181.Click photographs - Photos may exist for this station.
 JV3181
 JV3181.The dynamic height is computed by dividing the NAVD 88
 JV3181.geopotential number by the normal gravity value computed on the
 JV3181.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3181.degrees latitude (g = 980.6199 gals.).
 JV3181
 JV3181.The modeled gravity was interpolated from observed gravity values.
 JV3181
 JV3181;                    North         East    Units  Estimated Accuracy
 JV3181;SPC MD       -   178,580.      353,120.      MT  (+/- 180 meters Scaled)
 JV3181
 JV3181_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ806502(NAD 83)
 JV3181
 JV3181                          SUPERSEDED SURVEY CONTROL
 JV3181
 JV3181  NGVD 29 (11/26/84)   70.052  (m)          229.83   (f) ADJUSTED    2 0
 JV3181
 JV3181.Superseded values are not recommended for survey control.
 JV3181
 JV3181.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3181.See file dsdata.pdf to determine how the superseded data were derived.
 JV3181
 JV3181_MARKER: Z = SEE DESCRIPTION
 JV3181_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV3181_SP_SET: BRICK
 JV3181_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3181
 JV3181  HISTORY     - Date     Condition        Report By
 JV3181  HISTORY     - UNK      MONUMENTED       BORR
 JV3181  HISTORY     - 1938     GOOD             CGS
 JV3181  HISTORY     - 1942     GOOD             CGS
 JV3181
 JV3181                          STATION DESCRIPTION
 JV3181
 JV3181'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV3181'0.5 MI NW FROM POINT OF ROCKS.
 JV3181'0.5 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV3181'THE STATION AT POINT OF ROCKS, FREDERICK COUNTY, AT THE SOUTHEAST
 JV3181'END OF POINT OF ROCKS TUNNEL, AT THE NORTHEAST CORNER OF THE
 JV3181'LOWER BRICK FOUNDATION OF THE SOUTH WALL, 8 FEET SOUTHWEST OF
 JV3181'THE CENTER LINE OF THE EAST-BOUND TRACK, AND 6 INCHES BELOW THE
 JV3181'LEVEL OF THE RAILS.  THE CORNER OF A PAINTED BRICK.  NOTE-- A WHITE
 JV3181'ARROW POINTS TO THE BENCH MARK, AND LETTERING IN WHITE PAINT BM
 JV3181'229.793 IS ON THE BRICK WORK ABOVE THE MARK.
 JV3181
 JV3181                          STATION RECOVERY (1942)
 JV3181
 JV3181'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV3181'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6598 ***********************************************************************
 DL6598  DESIGNATION -  22AA
 DL6598  PID         -  DL6598
 DL6598  STATE/COUNTY-  MD/HOWARD
 DL6598  COUNTRY     -  US
 DL6598  USGS QUAD   -  SYKESVILLE (2016)
 DL6598
 DL6598                         *CURRENT SURVEY CONTROL
 DL6598  ______________________________________________________________________
 DL6598* NAD 83(1986) POSITION- 39 16 47.38   (N) 076 58 49.23   (W)   HD_HELD1
 DL6598* NAVD 88 ORTHO HEIGHT -   173.413 (meters)      568.94  (feet) ADJUSTED
 DL6598  ______________________________________________________________________
 DL6598  GEOID HEIGHT    -        -31.923 (meters)                     GEOID18
 DL6598  DYNAMIC HEIGHT  -        173.320 (meters)      568.63  (feet) COMP
 DL6598  MODELED GRAVITY -    980,088.9   (mgal)                       NAVD 88
 DL6598
 DL6598  VERT ORDER      -  SECOND    CLASS I
 DL6598
 DL6598.The horizontal coordinates were determined by differentially corrected
 DL6598.hand held GPS observations or other comparable positioning techniques
 DL6598.and have an estimated accuracy of +/- 3 meters.
 DL6598
 DL6598.The orthometric height was determined by differential leveling and
 DL6598.adjusted by the NATIONAL GEODETIC SURVEY
 DL6598.in March 2010.
 DL6598
 DL6598.No vertical observational check was made to the station.
 DL6598
 DL6598.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6598.GEOID18 height accuracy estimate available here.
 DL6598
 DL6598.Click photographs - Photos may exist for this station.
 DL6598
 DL6598.The dynamic height is computed by dividing the NAVD 88
 DL6598.geopotential number by the normal gravity value computed on the
 DL6598.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6598.degrees latitude (g = 980.6199 gals.).
 DL6598
 DL6598.The modeled gravity was interpolated from observed gravity values.
 DL6598
 DL6598;                    North         East    Units  Estimated Accuracy
 DL6598;SPC MD       -   179,071.2     401,696.2     MT  (+/- 3 meters HH1 GPS) 
 DL6598
 DL6598_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2918949699(NAD 83)
 DL6598
 DL6598                          SUPERSEDED SURVEY CONTROL
 DL6598
 DL6598.No superseded survey control is available for this station.
 DL6598
 DL6598_MARKER: DD = SURVEY DISK
 DL6598_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6598_STAMPING: 5/92 22AA
 DL6598_MARK LOGO: MD-027
 DL6598_PROJECTION: RECESSED 3 CENTIMETERS
 DL6598_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6598_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6598+STABILITY: SURFACE MOTION
 DL6598_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6598+SATELLITE: SATELLITE OBSERVATIONS - June 04, 2016
 DL6598
 DL6598  HISTORY     - Date     Condition        Report By
 DL6598  HISTORY     - 199205   MONUMENTED       MD-027
 DL6598  HISTORY     - 20070425 GOOD             MDSHA
 DL6598  HISTORY     - 20160604 GOOD             USPSQD
 DL6598
 DL6598                          STATION DESCRIPTION
 DL6598
 DL6598'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6598'THE STATION IS LOCATED ABOUT 2.6 MI (4.2 KM) EAST-SOUTHEAST OF
 DL6598'GLENWOOD, 2.2 MI (3.5 KM) SOUTHWEST OF WEST FRIENDSHIP AND 1.3 MI (2.1
 DL6598'KM) NORTH-NORTHEAST OF GLENEIG.
 DL6598'
 DL6598'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 70 AND STATE
 DL6598'HIGHWAY 32 IN WEST FRIENDSHIP, GO SOUTHWEST ALONG STATE HIGHWAY 32 FOR
 DL6598'2.4 MI (3.9 KM) TO PARLIAMENT PLACE LEADING SOUTH.  CONTINUE SOUTHWEST
 DL6598'ALONG STATE HIGHWAY 32 FOR 0.05 MI (0.1 KM) TO THE STATION ON THE
 DL6598'RIGHT.
 DL6598'
 DL6598'IT IS 4.0 FT (1.2 M) NORTHWEST OF THE NORTHWEST EDGE OF THE NORTHWEST
 DL6598'MACADAM SHOULDER OF THE HIGHWAY, 56.5 FT (17.2 M) NORTHEAST OF THE
 DL6598'NORTHEAST END OF A METAL GUARD RAIL, 19.3 FT (5.9 M) SOUTHWEST OF THE
 DL6598'SOUTHWEST END OF A METAL GUARD RAIL AND SET IN THE TOP OF A 8-INCH (20
 DL6598'CM) ROUND CONCRETE MONUMENT.
 DL6598
 DL6598                          STATION RECOVERY (2016)
 DL6598
 DL6598'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 DL6598'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8514 ***********************************************************************
 AI8514  DESIGNATION -  22DA
 AI8514  PID         -  AI8514
 AI8514  STATE/COUNTY-  MD/HOWARD
 AI8514  COUNTRY     -  US
 AI8514  USGS QUAD   -  SYKESVILLE (2016)
 AI8514
 AI8514                         *CURRENT SURVEY CONTROL
 AI8514  ______________________________________________________________________
 AI8514* NAD 83(2011) POSITION- 39 15 49.72901(N) 076 59 42.37695(W)   ADJUSTED
 AI8514* NAD 83(2011) ELLIP HT-   155.271 (meters)        (06/27/12)   ADJUSTED
 AI8514* NAD 83(2011) EPOCH   -  2010.00
 AI8514* NAVD 88 ORTHO HEIGHT -   187.2   (meters)      614.    (feet) GPS OBS
 AI8514  ______________________________________________________________________
 AI8514  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8514  GEOID HEIGHT    -        -31.888 (meters)                     GEOID99
 AI8514  GEOID HEIGHT    -        -31.907 (meters)                     GEOID18
 AI8514  NAD 83(2011) X  -  1,112,786.446 (meters)                     COMP
 AI8514  NAD 83(2011) Y  - -4,818,129.491 (meters)                     COMP
 AI8514  NAD 83(2011) Z  -  4,015,133.876 (meters)                     COMP
 AI8514  LAPLACE CORR    -         -2.53  (seconds)                    DEFLEC18
 AI8514
 AI8514  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8514  Standards:
 AI8514         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8514            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8514  -------------------------------------------------------------------
 AI8514  NETWORK    0.92   1.12           0.42   0.32   0.57      0.03722910
 AI8514  -------------------------------------------------------------------
 AI8514  Click here for local accuracies and other accuracy information.
 AI8514
 AI8514.The horizontal coordinates were established by GPS observations
 AI8514.and adjusted by the National Geodetic Survey in June 2012.
 AI8514
 AI8514.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8514.been affixed to the stable North American tectonic plate. See 
 AI8514.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8514
 AI8514.The horizontal coordinates are valid at the epoch date displayed above
 AI8514.which is a decimal equivalence of Year/Month/Day.
 AI8514
 AI8514.The orthometric height was determined by GPS observations and a
 AI8514.high-resolution geoid model.
 AI8514
 AI8514.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8514.GEOID18 height accuracy estimate available here.
 AI8514
 AI8514.Click photographs - Photos may exist for this station.
 AI8514
 AI8514.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8514
 AI8514.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8514
 AI8514.The ellipsoidal height was determined by GPS observations
 AI8514.and is referenced to NAD 83.
 AI8514
 AI8514. The following values were computed from the NAD 83(2011) position.
 AI8514
 AI8514;                    North         East     Units Scale Factor Converg.
 AI8514;SPC MD       -   177,293.128   400,422.471   MT  0.99997273   +0 00 11.1
 AI8514;SPC MD       -   581,669.20  1,313,719.39   sFT  0.99997273   +0 00 11.1
 AI8514;UTM  18      - 4,347,949.981   327,876.761   MT  0.99996479   -1 15 46.8
 AI8514
 AI8514!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8514!SPC MD       -   0.99997564  x   0.99997273  =   0.99994837
 AI8514!UTM  18      -   0.99997564  x   0.99996479  =   0.99994043
 AI8514
 AI8514_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2787647949(NAD 83)
 AI8514
 AI8514                          SUPERSEDED SURVEY CONTROL
 AI8514
 AI8514  NAD 83(2007)-  39 15 49.72897(N)    076 59 42.37771(W) AD(2002.00) 0
 AI8514  ELLIP H (02/10/07)  155.300  (m)                       GP(2002.00)    
 AI8514  ELLIP H (08/30/02)  155.300  (m)                       GP(       ) 4 2
 AI8514  NAD 83(1991)-  39 15 49.72870(N)    076 59 42.37782(W) AD(       ) 1
 AI8514  ELLIP H (11/16/00)  155.201  (m)                       GP(       ) 4 1
 AI8514
 AI8514.Superseded values are not recommended for survey control.
 AI8514
 AI8514.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8514.See file dsdata.pdf to determine how the superseded data were derived.
 AI8514
 AI8514_MARKER: DD = SURVEY DISK
 AI8514_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8514_STAMPING: 22DA
 AI8514_MARK LOGO: MD-027
 AI8514_PROJECTION: FLUSH
 AI8514_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8514_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8514+STABILITY: SURFACE MOTION
 AI8514_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8514+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 AI8514
 AI8514  HISTORY     - Date     Condition        Report By
 AI8514  HISTORY     - 1994     MONUMENTED       MD-027
 AI8514  HISTORY     - 20000915 GOOD             MD-027
 AI8514  HISTORY     - 20030821 GOOD             GEOCAC
 AI8514  HISTORY     - 20050405 GOOD             USPSQD
 AI8514
 AI8514                          STATION DESCRIPTION
 AI8514
 AI8514'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8514'DESCRIPTION BY HOWARD COUNTY 2000. THE STATION IS NEAR GLENELG,
 AI8514'ABOUT SEVEN MILES SOUTH OF SYKESVILLE,  7 MILES WNW OF COLUMBIA
 AI8514'AND 8 MILES NE OF LAYTONSVILLE.. TO REACH THE STATION FROM THE
 AI8514'POST OFFICE AY GLENELG  AT THE INTERSECTION OF TEN OAKS ROAD AND
 AI8514'TRIADELPHIA ROAD, GO  WEST 0.45 MILES ALONG TRIADELPHIA ROAD TO
 AI8514'THE CORNER  OF KENNARD ROAD, THE  MARK IS ON  THE NW CORNER OF
 AI8514'THE INTERSECTION.    THE MARK IS 21 FEET NORTH OF THE CENTERLINE OF
 AI8514'TRIADELPHIA ROAD,  5.5 FEET TO THE CORNER POST OF A PVC FENCE AND
 AI8514'6.9 FEET TO THE  SECOND POST OF SAID FENCE.   THE MARK IS A STANDARD
 AI8514'HOWARD COUNTY SURVEY DISC SET ON  CONCRETE BASE ,  FLUSH WITH
 AI8514'THE GROUND.
 AI8514'
 AI8514
 AI8514                          STATION RECOVERY (2003)
 AI8514
 AI8514'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 AI8514'THE PVC FENCE MENTIONED IN THE 2000 DESCRIPTION HAS TWO CORNER POSTS.
 AI8514'THE ONE MEASURED FROM IS AT THE EASTERN END OF THE LONG RUN ALONG THE
 AI8514'TRIADEALPHIA ROAD FRONTAGE. THE STATION IS 5.5 FEET SOUTHWEST OF THAT
 AI8514'CORNER POST AND 6.9 FEET SOUTHEAST OF THE NEXT POST WEST PARALLEL TO
 AI8514'TRIADELPHIA ROAD. (DISTANCES TAKEN FROM STATION DESCRIPTION AND ARE
 AI8514'APPROXIMATELY CORRECT BUT WERE NOT REMEASURED.)
 AI8514'
 AI8514'DISK IS ALSO ABOUT 25 FEET WEST OF THE KENNARD-TRIADELPHIA STREET
 AI8514'SIGN.
 AI8514
 AI8514                          STATION RECOVERY (2005)
 AI8514
 AI8514'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 AI8514'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7026 ***********************************************************************
 JV7026  DESIGNATION -  23 41 002
 JV7026  PID         -  JV7026
 JV7026  STATE/COUNTY-  MD/HOWARD
 JV7026  COUNTRY     -  US
 JV7026  USGS QUAD   -  SAVAGE (2016)
 JV7026
 JV7026                         *CURRENT SURVEY CONTROL
 JV7026  ______________________________________________________________________
 JV7026* NAD 83(2011) POSITION- 39 10 39.08606(N) 076 50 28.59554(W)   ADJUSTED
 JV7026* NAD 83(2011) ELLIP HT-    77.159 (meters)        (06/27/12)   ADJUSTED
 JV7026* NAD 83(2011) EPOCH   -  2010.00
 JV7026* NAVD 88 ORTHO HEIGHT -   109.4   (meters)      359.    (feet) GPS OBS
 JV7026  ______________________________________________________________________
 JV7026  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7026  GEOID HEIGHT    -        -32.207 (meters)                     GEOID99
 JV7026  GEOID HEIGHT    -        -32.226 (meters)                     GEOID18
 JV7026  NAD 83(2011) X  -  1,127,083.392 (meters)                     COMP
 JV7026  NAD 83(2011) Y  - -4,820,964.072 (meters)                     COMP
 JV7026  NAD 83(2011) Z  -  4,007,662.677 (meters)                     COMP
 JV7026  LAPLACE CORR    -         -3.69  (seconds)                    DEFLEC18
 JV7026
 JV7026  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7026  Standards:
 JV7026         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7026            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7026  -------------------------------------------------------------------
 JV7026  NETWORK    1.17   1.31           0.50   0.45   0.67     -0.14820146
 JV7026  -------------------------------------------------------------------
 JV7026  Click here for local accuracies and other accuracy information.
 JV7026
 JV7026.The horizontal coordinates were established by GPS observations
 JV7026.and adjusted by the National Geodetic Survey in June 2012.
 JV7026
 JV7026.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7026.been affixed to the stable North American tectonic plate. See 
 JV7026.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7026
 JV7026.The horizontal coordinates are valid at the epoch date displayed above
 JV7026.which is a decimal equivalence of Year/Month/Day.
 JV7026
 JV7026.The orthometric height was determined by GPS observations and a
 JV7026.high-resolution geoid model.
 JV7026
 JV7026.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7026.GEOID18 height accuracy estimate available here.
 JV7026
 JV7026.Click photographs - Photos may exist for this station.
 JV7026
 JV7026.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7026
 JV7026.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7026
 JV7026.The ellipsoidal height was determined by GPS observations
 JV7026.and is referenced to NAD 83.
 JV7026
 JV7026. The following values were computed from the NAD 83(2011) position.
 JV7026
 JV7026;                    North         East     Units Scale Factor Converg.
 JV7026;SPC MD       -   167,725.489   413,714.713   MT  0.99996368   +0 05 58.6
 JV7026;SPC MD       -   550,279.38  1,357,329.02   sFT  0.99996368   +0 05 58.6
 JV7026;UTM  18      - 4,338,091.632   340,954.229   MT  0.99991147   -1 09 48.3
 JV7026
 JV7026!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7026!SPC MD       -   0.99998789  x   0.99996368  =   0.99995157
 JV7026!UTM  18      -   0.99998789  x   0.99991147  =   0.99989937
 JV7026
 JV7026_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4095438091(NAD 83)
 JV7026
 JV7026                          SUPERSEDED SURVEY CONTROL
 JV7026
 JV7026  NAD 83(2007)-  39 10 39.08623(N)    076 50 28.59674(W) AD(2002.00) 0
 JV7026  ELLIP H (02/10/07)   77.187  (m)                       GP(2002.00)    
 JV7026  ELLIP H (08/30/02)   77.179  (m)                       GP(       ) 4 2
 JV7026  NAD 83(1991)-  39 10 39.08614(N)    076 50 28.59627(W) AD(       ) 1
 JV7026  ELLIP H (02/23/93)   77.117  (m)                       GP(       ) 4 2
 JV7026  NGVD 29 (02/23/93)  109.6    (m)  GEOID90  model used  GPS OBS        
 JV7026
 JV7026.Superseded values are not recommended for survey control.
 JV7026
 JV7026.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7026.See file dsdata.pdf to determine how the superseded data were derived.
 JV7026
 JV7026_MARKER: DD = SURVEY DISK
 JV7026_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7026_STAMPING: 2341002 6/1/81
 JV7026_MARK LOGO: MD-027
 JV7026_PROJECTION: RECESSED 5 CENTIMETERS
 JV7026_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 JV7026_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7026+STABILITY: SURFACE MOTION
 JV7026_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7026+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2022
 JV7026
 JV7026  HISTORY     - Date     Condition        Report By
 JV7026  HISTORY     - 1981     MONUMENTED       MD-027
 JV7026  HISTORY     - 19901125 GOOD             MD-027
 JV7026  HISTORY     - 20000915 GOOD             MD-027
 JV7026  HISTORY     - 20080216 GOOD             GEOCAC
 JV7026  HISTORY     - 20110326 GOOD             NGS
 JV7026  HISTORY     - 20220909 GOOD             STUBY
 JV7026
 JV7026                          STATION DESCRIPTION
 JV7026
 JV7026'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7026'THE STATION IS LOCATED 4.8 KM (3.00 MI) WEST OF WATERLOO AND 9.9 KM
 JV7026'(6.15 MI) NORTH OF LAUREL. OWNERSHIP-- BALTIMORE GAS AND ELECTRIC
 JV7026'RIGHT-OF-WAY.
 JV7026'TO REACH THE STATION FROM THE COLUMBIA POST OFFICE ON OAK HALL ROAD,
 JV7026'GO 0.5 KM (0.30 MI) SOUTH ON OAK HALL ROAD TO OAKLAND MILLS ROAD,
 JV7026'TURN LEFT AND GO 0.5 KM (0.30 MI) SOUTH ON OAKLAND MILLS ROAD TO
 JV7026'SNOWDEN RIVER PARKWAY, TURN RIGHT AND GO 1.6 KM (1.00 MI) WEST ON
 JV7026'SNOWDEN RIVER PARKWAY TO CARVED STONE ROAD, TURN RIGHT AND GO 0.3 KM
 JV7026'(0.20 MI) WEST ON CARVED STONE ROAD TO THE MARK ON THE LEFT.
 JV7026'THE STATION LIES 19.8 M (65.0 FT) SOUTH EAST FROM THE SOUTHEAST
 JV7026'CORNER OF A STORM WATER INLET LOCATED ON THE NORTH SIDE OF CARVED
 JV7026'STONE ROAD, 12.6 M (41.3 FT) SOUTHEAST FROM THE NORTH EAST CORNER OF
 JV7026'A STORM WATER INLET LOCATED ON THE SOUTH SIDE OF CARVED STONE ROAD,
 JV7026'59.0 M (193.6 FT) NORTHEAST FROM THE NORTHEAST LEG OF A BALTIMORE GAS
 JV7026'AND ELECTRIC TRANSMISSION TOWER NUMBER 29, 58.5 M (191.9 FT)
 JV7026'NORTHWEST FROM THE NORTHWEST LEG OF A BALTIMORE GAS AND ELECTRIC TOWER
 JV7026'NUMBER 29-E, AND 0.3 M (1.0 FT) FROM A HOWARD COUNTY WITNESS POST.
 JV7026'THE STATION IS A STANDARD HOWARD COUNTY SURVEY DISC. STAMPED 2341002
 JV7026'1981.SET ON TOP OF A ROUND CONCRETE MONUMENT 20 CM IN DIAMETER
 JV7026'RECESSED 3 CM FROM THE GROUND.
 JV7026'COMMENT--NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV7026'INCLUDED IN THIS PROJECT.
 JV7026
 JV7026                          STATION RECOVERY (2000)
 JV7026
 JV7026'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7026'HOWARD COUNTY 2000 RECOVERY FOUND AS DESCRIBED IN GOOD
 JV7026'CONDITION
 JV7026'
 JV7026
 JV7026                          STATION RECOVERY (2008)
 JV7026
 JV7026'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JV7026'NOTE - MARK IS 7 FEET SW OF SW EDGE OF CURB AND 6.5 FEET NE OF NE EDGE
 JV7026'OF SIDEWALK.
 JV7026
 JV7026                          STATION RECOVERY (2011)
 JV7026
 JV7026'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 JV7026'RECOVERED IN GOOD CONDITION.
 JV7026
 JV7026                          STATION RECOVERY (2022)
 JV7026
 JV7026'RECOVERY NOTE BY STUBY SUBSURFACE INVESTIGATIONS, LLC 2022 (JS)
 JV7026'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1211 ***********************************************************************
 HV1211  DESIGNATION -  2303 WSSC
 HV1211  PID         -  HV1211
 HV1211  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1211  COUNTRY     -  US
 HV1211  USGS QUAD   -  LANHAM (2016)
 HV1211
 HV1211                         *CURRENT SURVEY CONTROL
 HV1211  ______________________________________________________________________
 HV1211* NAD 83(1986) POSITION- 38 53 21.     (N) 076 52 13.     (W)   SCALED
 HV1211* NAVD 88 ORTHO HEIGHT -    48.789 (meters)      160.07  (feet) ADJUSTED
 HV1211  ______________________________________________________________________
 HV1211  GEOID HEIGHT    -        -32.432 (meters)                     GEOID18
 HV1211  DYNAMIC HEIGHT  -         48.762 (meters)      159.98  (feet) COMP
 HV1211  MODELED GRAVITY -    980,079.3   (mgal)                       NAVD 88
 HV1211
 HV1211  VERT ORDER      -  SECOND    CLASS 0
 HV1211
 HV1211.The horizontal coordinates were scaled from a map and have
 HV1211.an estimated accuracy of +/- 6 seconds.
 HV1211
 HV1211.The orthometric height was determined by differential leveling and
 HV1211.adjusted by the NATIONAL GEODETIC SURVEY
 HV1211.in June 1991.
 HV1211
 HV1211.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1211.GEOID18 height accuracy estimate available here.
 HV1211
 HV1211.Click photographs - Photos may exist for this station.
 HV1211
 HV1211.The dynamic height is computed by dividing the NAVD 88
 HV1211.geopotential number by the normal gravity value computed on the
 HV1211.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1211.degrees latitude (g = 980.6199 gals.).
 HV1211
 HV1211.The modeled gravity was interpolated from observed gravity values.
 HV1211
 HV1211;                    North         East    Units  Estimated Accuracy
 HV1211;SPC MD       -   135,710.      411,250.      MT  (+/- 180 meters Scaled)
 HV1211
 HV1211_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ377061(NAD 83)
 HV1211
 HV1211                          SUPERSEDED SURVEY CONTROL
 HV1211
 HV1211  NGVD 29 (11/26/84)   49.028  (m)          160.85   (f) ADJUSTED    2 0
 HV1211
 HV1211.Superseded values are not recommended for survey control.
 HV1211
 HV1211.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1211.See file dsdata.pdf to determine how the superseded data were derived.
 HV1211
 HV1211_MARKER: Q = CHISELED SQUARE
 HV1211_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1211_SP_SET: BRIDGE
 HV1211_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1211
 HV1211  HISTORY     - Date     Condition        Report By
 HV1211  HISTORY     - UNK      MONUMENTED       WSSC
 HV1211  HISTORY     - 1958     GOOD             CGS
 HV1211
 HV1211                          STATION DESCRIPTION
 HV1211
 HV1211'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1211'1.8 MI E FROM SEAT PLEASANT.
 HV1211'ABOUT 1.8 MILES EAST ALONG STATE HIGHWAY 214 FROM THE LYNDON
 HV1211'HILL SCHOOL AT SEAT PLEASANT, ON THE TOP OF THE EAST END OF THE
 HV1211'NORTH CONCRETE HEADWALL OF A BRIDGE OVER A SMALL CREEK, 31 FEET
 HV1211'NORTH OF THE CENTER LINE OF THE HIGHWAY, 1.1 FEET WEST OF THE
 HV1211'EAST END OF THE HEADWALL AND ABOUT 6 FEET LOWER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1207 ***********************************************************************
 HV1207  DESIGNATION -  2304 WSSC
 HV1207  PID         -  HV1207
 HV1207  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1207  COUNTRY     -  US
 HV1207  USGS QUAD   -  LANHAM (2016)
 HV1207
 HV1207                         *CURRENT SURVEY CONTROL
 HV1207  ______________________________________________________________________
 HV1207* NAD 83(1986) POSITION- 38 53 34.     (N) 076 50 42.     (W)   SCALED
 HV1207* NAVD 88 ORTHO HEIGHT -    35.25  (+/-2cm)      115.6   (feet) VERTCON3
 HV1207  ______________________________________________________________________
 HV1207  GEOID HEIGHT    -        -32.496 (meters)                     GEOID18
 HV1207  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1207
 HV1207.The horizontal coordinates were scaled from a map and have
 HV1207.an estimated accuracy of +/- 6 seconds.
 HV1207
 HV1207.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1207.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1207
 HV1207.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1207.GEOID18 height accuracy estimate available here.
 HV1207
 HV1207.The vertical order pertains to the NGVD 29 superseded value.
 HV1207
 HV1207.Click photographs - Photos may exist for this station.
 HV1207
 HV1207;                    North         East    Units  Estimated Accuracy
 HV1207;SPC MD       -   136,120.      413,450.      MT  (+/- 180 meters Scaled)
 HV1207
 HV1207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ399064(NAD 83)
 HV1207
 HV1207                          SUPERSEDED SURVEY CONTROL
 HV1207
 HV1207  NGVD 29 (11/26/84)   35.496  (m)          116.46   (f) ADJUSTED    2 0
 HV1207
 HV1207.Superseded values are not recommended for survey control.
 HV1207
 HV1207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1207.See file dsdata.pdf to determine how the superseded data were derived.
 HV1207
 HV1207_MARKER: Q = CHISELED SQUARE
 HV1207_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1207_SP_SET: BRIDGE
 HV1207_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1207
 HV1207  HISTORY     - Date     Condition        Report By
 HV1207  HISTORY     - UNK      MONUMENTED       WSSC
 HV1207  HISTORY     - 1944     GOOD             WSSC
 HV1207
 HV1207                          STATION DESCRIPTION
 HV1207
 HV1207'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1207'0.8 MI W FROM LARGO.
 HV1207'ON CENTRAL AVENUE, AT A BRIDGE OVER A SMALL STREAM, ON THE NORTH
 HV1207'SIDE OF THE ROAD, ON THE TOP OF THE WING WALL, AND ACROSS THE
 HV1207'ROAD FROM 2611 (WSSC) = C 84.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1204 ***********************************************************************
 HV1204  DESIGNATION -  2305 WSSC
 HV1204  PID         -  HV1204
 HV1204  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1204  COUNTRY     -  US
 HV1204  USGS QUAD   -  LANHAM (2016)
 HV1204
 HV1204                         *CURRENT SURVEY CONTROL
 HV1204  ______________________________________________________________________
 HV1204* NAD 83(1986) POSITION- 38 53 41.     (N) 076 50 19.     (W)   SCALED
 HV1204* NAVD 88 ORTHO HEIGHT -    55.15  (+/-2cm)      180.9   (feet) VERTCON3
 HV1204  ______________________________________________________________________
 HV1204  GEOID HEIGHT    -        -32.511 (meters)                     GEOID18
 HV1204  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1204
 HV1204.The horizontal coordinates were scaled from a map and have
 HV1204.an estimated accuracy of +/- 6 seconds.
 HV1204
 HV1204.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1204.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1204
 HV1204.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1204.GEOID18 height accuracy estimate available here.
 HV1204
 HV1204.The vertical order pertains to the NGVD 29 superseded value.
 HV1204
 HV1204.Click photographs - Photos may exist for this station.
 HV1204
 HV1204;                    North         East    Units  Estimated Accuracy
 HV1204;SPC MD       -   136,330.      414,000.      MT  (+/- 180 meters Scaled)
 HV1204
 HV1204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ405067(NAD 83)
 HV1204
 HV1204                          SUPERSEDED SURVEY CONTROL
 HV1204
 HV1204  NGVD 29 (11/26/84)   55.397  (m)          181.75   (f) ADJUSTED    2 0
 HV1204
 HV1204.Superseded values are not recommended for survey control.
 HV1204
 HV1204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1204.See file dsdata.pdf to determine how the superseded data were derived.
 HV1204
 HV1204_MARKER: Z = SEE DESCRIPTION
 HV1204_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1204_SP_SET: WALNUT TREE ROOT
 HV1204_STAMPING: WSSC 2305
 HV1204_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1204
 HV1204  HISTORY     - Date     Condition        Report By
 HV1204  HISTORY     - UNK      MONUMENTED       WSSC
 HV1204  HISTORY     - 1944     GOOD             WSSC
 HV1204
 HV1204                          STATION DESCRIPTION
 HV1204
 HV1204'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1204'0.4 MI W FROM LARGO.
 HV1204'ON CENTRAL AVENUE, ON THE NORTH SIDE OF THE ROAD, NEAR A GATE
 HV1204'ON A DRIVE LEADING TO A CABIN, AND IN THE SOUTH ROOT OF A
 HV1204'20-INCH WALNUT TREE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1282 ***********************************************************************
 HV1282  DESIGNATION -  2306 WSSC
 HV1282  PID         -  HV1282
 HV1282  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1282  COUNTRY     -  US
 HV1282  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1282
 HV1282                         *CURRENT SURVEY CONTROL
 HV1282  ______________________________________________________________________
 HV1282* NAD 83(1986) POSITION- 38 59 49.     (N) 076 54 26.     (W)   SCALED
 HV1282* NAVD 88 ORTHO HEIGHT -    25.67  (+/-2cm)       84.2   (feet) VERTCON3
 HV1282  ______________________________________________________________________
 HV1282  GEOID HEIGHT    -        -32.192 (meters)                     GEOID18
 HV1282  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1282
 HV1282.The horizontal coordinates were scaled from a map and have
 HV1282.an estimated accuracy of +/- 6 seconds.
 HV1282
 HV1282.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1282.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1282
 HV1282.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1282.GEOID18 height accuracy estimate available here.
 HV1282
 HV1282.The vertical order pertains to the NGVD 29 superseded value.
 HV1282
 HV1282.Click photographs - Photos may exist for this station.
 HV1282
 HV1282;                    North         East    Units  Estimated Accuracy
 HV1282;SPC MD       -   147,670.      408,040.      MT  (+/- 180 meters Scaled)
 HV1282
 HV1282_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ348181(NAD 83)
 HV1282
 HV1282                          SUPERSEDED SURVEY CONTROL
 HV1282
 HV1282  NGVD 29 (11/26/84)   25.898  (m)           84.97   (f) ADJUSTED    2 0
 HV1282
 HV1282.Superseded values are not recommended for survey control.
 HV1282
 HV1282.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1282.See file dsdata.pdf to determine how the superseded data were derived.
 HV1282
 HV1282_MARKER: Z = SEE DESCRIPTION
 HV1282_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1282_SP_SET: OAK TREE ROOT
 HV1282_STAMPING: WSSC 2306
 HV1282_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1282
 HV1282  HISTORY     - Date     Condition        Report By
 HV1282  HISTORY     - UNK      MONUMENTED       WSSC
 HV1282  HISTORY     - 1944     GOOD             WSSC
 HV1282  HISTORY     - 1971     MARK NOT FOUND   WSSC
 HV1282
 HV1282                          STATION DESCRIPTION
 HV1282
 HV1282'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1282'AT BERWYN HEIGHTS.
 HV1282'ON GREENBELT ROAD, 0.5 MILE EAST OF THE BALTIMORE AND OHIO
 HV1282'RAILROAD AT BRANCHVILLE, ON THE SOUTH SIDE OF THE ROAD, AND IN
 HV1282'THE NORTH ROOT OF A 20-INCH OAK TREE. LAG SCREW AND WASHER.
 HV1282
 HV1282                          STATION RECOVERY (1971)
 HV1282
 HV1282'RECOVERY NOTE BY WASH SUBURB SAN COMM 1971
 HV1282'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1285 ***********************************************************************
 HV1285  DESIGNATION -  2309 WSSC
 HV1285  PID         -  HV1285
 HV1285  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1285  COUNTRY     -  US
 HV1285  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1285
 HV1285                         *CURRENT SURVEY CONTROL
 HV1285  ______________________________________________________________________
 HV1285* NAD 83(1986) POSITION- 38 59 45.     (N) 076 53 20.     (W)   SCALED
 HV1285* NAVD 88 ORTHO HEIGHT -    48.12  (+/-2cm)      157.9   (feet) VERTCON3
 HV1285  ______________________________________________________________________
 HV1285  GEOID HEIGHT    -        -32.240 (meters)                     GEOID18
 HV1285  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1285
 HV1285.The horizontal coordinates were scaled from a map and have
 HV1285.an estimated accuracy of +/- 6 seconds.
 HV1285
 HV1285.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1285.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1285
 HV1285.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1285.GEOID18 height accuracy estimate available here.
 HV1285
 HV1285.The vertical order pertains to the NGVD 29 superseded value.
 HV1285
 HV1285.Click photographs - Photos may exist for this station.
 HV1285
 HV1285;                    North         East    Units  Estimated Accuracy
 HV1285;SPC MD       -   147,550.      409,630.      MT  (+/- 180 meters Scaled)
 HV1285
 HV1285_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ364180(NAD 83)
 HV1285
 HV1285                          SUPERSEDED SURVEY CONTROL
 HV1285
 HV1285  NGVD 29 (11/26/84)   48.343  (m)          158.61   (f) ADJUSTED    2 0
 HV1285
 HV1285.Superseded values are not recommended for survey control.
 HV1285
 HV1285.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1285.See file dsdata.pdf to determine how the superseded data were derived.
 HV1285
 HV1285_MARKER: B = BOLT
 HV1285_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1285_SP_SET: OAK TREE ROOT
 HV1285_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1285
 HV1285  HISTORY     - Date     Condition        Report By
 HV1285  HISTORY     - UNK      MONUMENTED       WSSC
 HV1285  HISTORY     - 1944     GOOD             WSSC
 HV1285
 HV1285                          STATION DESCRIPTION
 HV1285
 HV1285'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1285'0.7 MI E FROM BERWYN HEIGHTS.
 HV1285'ON GREENBELT ROAD, 0.7 MILE EAST OF THE INTERSECTION OF EDMONSTON
 HV1285'AVENUE, ABOUT 250 FEET NORTH OF THE ROAD, ON THE WEST SIDE OF
 HV1285'A DRIVE TO A HOUSE, AND IN THE SOUTH ROOT OF A 30-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1288 ***********************************************************************
 HV1288  DESIGNATION -  2310 WSSC
 HV1288  PID         -  HV1288
 HV1288  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1288  COUNTRY     -  US
 HV1288  USGS QUAD   -  LANHAM (2016)
 HV1288
 HV1288                         *CURRENT SURVEY CONTROL
 HV1288  ______________________________________________________________________
 HV1288* NAD 83(1986) POSITION- 38 59 38.     (N) 076 52 30.     (W)   SCALED
 HV1288* NAVD 88 ORTHO HEIGHT -    42.07  (+/-2cm)      138.0   (feet) VERTCON3
 HV1288  ______________________________________________________________________
 HV1288  GEOID HEIGHT    -        -32.278 (meters)                     GEOID18
 HV1288  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1288
 HV1288.The horizontal coordinates were scaled from a map and have
 HV1288.an estimated accuracy of +/- 6 seconds.
 HV1288
 HV1288.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1288.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1288
 HV1288.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1288.GEOID18 height accuracy estimate available here.
 HV1288
 HV1288.The vertical order pertains to the NGVD 29 superseded value.
 HV1288
 HV1288.Click photographs - Photos may exist for this station.
 HV1288
 HV1288;                    North         East    Units  Estimated Accuracy
 HV1288;SPC MD       -   147,340.      410,830.      MT  (+/- 180 meters Scaled)
 HV1288
 HV1288_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ376177(NAD 83)
 HV1288
 HV1288                          SUPERSEDED SURVEY CONTROL
 HV1288
 HV1288  NGVD 29 (11/26/84)   42.298  (m)          138.77   (f) ADJUSTED    2 0
 HV1288
 HV1288.Superseded values are not recommended for survey control.
 HV1288
 HV1288.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1288.See file dsdata.pdf to determine how the superseded data were derived.
 HV1288
 HV1288_MARKER: Q = CHISELED SQUARE
 HV1288_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1288_SP_SET: CULVERT
 HV1288_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1288
 HV1288  HISTORY     - Date     Condition        Report By
 HV1288  HISTORY     - UNK      MONUMENTED       WSSC
 HV1288  HISTORY     - 1944     GOOD             WSSC
 HV1288
 HV1288                          STATION DESCRIPTION
 HV1288
 HV1288'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1288'1.6 MI E FROM BERWYN HEIGHTS.
 HV1288'ON THE GLENN DALE ROAD, 0.5 MILE EAST OF THE ENTRANCE TO GREENBELT,
 HV1288'AT THE JUNCTION OF A ROAD LEADING NORTHEAST, ON THE NORTH SIDE
 HV1288'OF THE MAIN ROAD, AT A CONCRETE CULVERT UNDER THE SIDE ROAD, AND
 HV1288'ON THE SOUTHEAST CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1289 ***********************************************************************
 HV1289  DESIGNATION -  2311 WSSC
 HV1289  PID         -  HV1289
 HV1289  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1289  COUNTRY     -  US
 HV1289  USGS QUAD   -  LANHAM (2016)
 HV1289
 HV1289                         *CURRENT SURVEY CONTROL
 HV1289  ______________________________________________________________________
 HV1289* NAD 83(1986) POSITION- 38 59 32.     (N) 076 51 59.     (W)   SCALED
 HV1289* NAVD 88 ORTHO HEIGHT -    69.42  (+/-2cm)      227.8   (feet) VERTCON3
 HV1289  ______________________________________________________________________
 HV1289  GEOID HEIGHT    -        -32.302 (meters)                     GEOID18
 HV1289  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1289
 HV1289.The horizontal coordinates were scaled from a map and have
 HV1289.an estimated accuracy of +/- 6 seconds.
 HV1289
 HV1289.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1289.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1289
 HV1289.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1289.GEOID18 height accuracy estimate available here.
 HV1289
 HV1289.The vertical order pertains to the NGVD 29 superseded value.
 HV1289
 HV1289.Click photographs - Photos may exist for this station.
 HV1289
 HV1289;                    North         East    Units  Estimated Accuracy
 HV1289;SPC MD       -   147,150.      411,580.      MT  (+/- 180 meters Scaled)
 HV1289
 HV1289_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ383175(NAD 83)
 HV1289
 HV1289                          SUPERSEDED SURVEY CONTROL
 HV1289
 HV1289  NGVD 29 (11/26/84)   69.644  (m)          228.49   (f) ADJUSTED    2 0
 HV1289
 HV1289.Superseded values are not recommended for survey control.
 HV1289
 HV1289.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1289.See file dsdata.pdf to determine how the superseded data were derived.
 HV1289
 HV1289_MARKER: Z = SEE DESCRIPTION
 HV1289_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1289_SP_SET: PINE TREE ROOT
 HV1289_STAMPING: WSSC 2311
 HV1289_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1289
 HV1289  HISTORY     - Date     Condition        Report By
 HV1289  HISTORY     - UNK      MONUMENTED       WSSC
 HV1289  HISTORY     - 1944     GOOD             WSSC
 HV1289
 HV1289                          STATION DESCRIPTION
 HV1289
 HV1289'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1289'2.1 MI E FROM BERWYN HEIGHTS.
 HV1289'ON THE GLENN DALE ROAD, 0.5 MILE WEST OF CIPRIANO SHORT CUT TO
 HV1289'LANHAM, ON THE SOUTH SIDE OF THE ROAD, AND IN THE SOUTHWEST ROOT
 HV1289'OF A 10-INCH PINE TREE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1185 ***********************************************************************
 HV1185  DESIGNATION -  2316 WSSC
 HV1185  PID         -  HV1185
 HV1185  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1185  COUNTRY     -  US
 HV1185  USGS QUAD   -  LANHAM (2016)
 HV1185
 HV1185                         *CURRENT SURVEY CONTROL
 HV1185  ______________________________________________________________________
 HV1185* NAD 83(1986) POSITION- 38 56 42.     (N) 076 51 15.     (W)   SCALED
 HV1185* NAVD 88 ORTHO HEIGHT -    58.17  (+/-2cm)      190.8   (feet) VERTCON3
 HV1185  ______________________________________________________________________
 HV1185  GEOID HEIGHT    -        -32.399 (meters)                     GEOID18
 HV1185  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1185
 HV1185.The horizontal coordinates were scaled from a map and have
 HV1185.an estimated accuracy of +/- 6 seconds.
 HV1185
 HV1185.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1185.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1185
 HV1185.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1185.GEOID18 height accuracy estimate available here.
 HV1185
 HV1185.The vertical order pertains to the NGVD 29 superseded value.
 HV1185
 HV1185.Click photographs - Photos may exist for this station.
 HV1185
 HV1185;                    North         East    Units  Estimated Accuracy
 HV1185;SPC MD       -   141,910.      412,640.      MT  (+/- 180 meters Scaled)
 HV1185
 HV1185_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ393123(NAD 83)
 HV1185
 HV1185                          SUPERSEDED SURVEY CONTROL
 HV1185
 HV1185  NGVD 29 (11/26/84)   58.402  (m)          191.61   (f) ADJUSTED    2 0
 HV1185
 HV1185.Superseded values are not recommended for survey control.
 HV1185
 HV1185.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1185.See file dsdata.pdf to determine how the superseded data were derived.
 HV1185
 HV1185_MARKER: Z = SEE DESCRIPTION
 HV1185_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1185_SP_SET: OAK TREE ROOT
 HV1185_STAMPING: WSSC 2316
 HV1185_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1185
 HV1185  HISTORY     - Date     Condition        Report By
 HV1185  HISTORY     - UNK      MONUMENTED       WSSC
 HV1185  HISTORY     - 1944     GOOD             WSSC
 HV1185
 HV1185                          STATION DESCRIPTION
 HV1185
 HV1185'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1185'0.4 MI N FROM ARDMORE.
 HV1185'ON THE LANHAM-ARDMORE ROAD, IN FRONT OF EBENEEZER CHURCH, ON
 HV1185'THE WEST SIDE OF THE ROAD, AND IN THE SOUTHEAST ROOT OF A
 HV1185'20-INCH OAK TREE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1192 ***********************************************************************
 HV1192  DESIGNATION -  2317=CHIS SQ USGS
 HV1192  PID         -  HV1192
 HV1192  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1192  COUNTRY     -  US
 HV1192  USGS QUAD   -  LANHAM (2016)
 HV1192
 HV1192                         *CURRENT SURVEY CONTROL
 HV1192  ______________________________________________________________________
 HV1192* NAD 83(1986) POSITION- 38 55 23.     (N) 076 51 30.     (W)   SCALED
 HV1192* NAVD 88 ORTHO HEIGHT -    30.31  (+/-2cm)       99.4   (feet) VERTCON3
 HV1192  ______________________________________________________________________
 HV1192  GEOID HEIGHT    -        -32.419 (meters)                     GEOID18
 HV1192  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1192
 HV1192.The horizontal coordinates were scaled from a map and have
 HV1192.an estimated accuracy of +/- 6 seconds.
 HV1192
 HV1192.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1192.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1192
 HV1192.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1192.GEOID18 height accuracy estimate available here.
 HV1192
 HV1192.The vertical order pertains to the NGVD 29 superseded value.
 HV1192
 HV1192.Click photographs - Photos may exist for this station.
 HV1192
 HV1192;                    North         East    Units  Estimated Accuracy
 HV1192;SPC MD       -   139,470.      412,290.      MT  (+/- 180 meters Scaled)
 HV1192
 HV1192_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ389098(NAD 83)
 HV1192
 HV1192                          SUPERSEDED SURVEY CONTROL
 HV1192
 HV1192  NGVD 29 (11/26/84)   30.554  (m)          100.24   (f) ADJUSTED    2 0
 HV1192
 HV1192.Superseded values are not recommended for survey control.
 HV1192
 HV1192.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1192.See file dsdata.pdf to determine how the superseded data were derived.
 HV1192
 HV1192_MARKER: Q = CHISELED SQUARE
 HV1192_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1192_SP_SET: CULVERT
 HV1192_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1192
 HV1192  HISTORY     - Date     Condition        Report By
 HV1192  HISTORY     - UNK      MONUMENTED       USGS
 HV1192  HISTORY     - 1944     GOOD             WSSC
 HV1192
 HV1192                          STATION DESCRIPTION
 HV1192
 HV1192'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1192'0.5 MI SE FROM GLENARDEN.
 HV1192'ON THE GLENARDEN-BRIGHTSEAT ROAD, AT A CONCRETE CULVERT UNDER
 HV1192'THE ROAD, AND ON THE CENTER OF THE TOP OF THE EAST HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1195 ***********************************************************************
 HV1195  DESIGNATION -  2319 WSSC
 HV1195  PID         -  HV1195
 HV1195  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1195  COUNTRY     -  US
 HV1195  USGS QUAD   -  LANHAM (2016)
 HV1195
 HV1195                         *CURRENT SURVEY CONTROL
 HV1195  ______________________________________________________________________
 HV1195* NAD 83(1986) POSITION- 38 55 03.     (N) 076 51 04.     (W)   SCALED
 HV1195* NAVD 88 ORTHO HEIGHT -    45.15  (+/-2cm)      148.1   (feet) VERTCON3
 HV1195  ______________________________________________________________________
 HV1195  GEOID HEIGHT    -        -32.445 (meters)                     GEOID18
 HV1195  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1195
 HV1195.The horizontal coordinates were scaled from a map and have
 HV1195.an estimated accuracy of +/- 6 seconds.
 HV1195
 HV1195.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1195.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1195
 HV1195.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1195.GEOID18 height accuracy estimate available here.
 HV1195
 HV1195.The vertical order pertains to the NGVD 29 superseded value.
 HV1195
 HV1195.Click photographs - Photos may exist for this station.
 HV1195
 HV1195;                    North         East    Units  Estimated Accuracy
 HV1195;SPC MD       -   138,860.      412,910.      MT  (+/- 180 meters Scaled)
 HV1195
 HV1195_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ395092(NAD 83)
 HV1195
 HV1195                          SUPERSEDED SURVEY CONTROL
 HV1195
 HV1195  NGVD 29 (11/26/84)   45.396  (m)          148.94   (f) ADJUSTED    2 0
 HV1195
 HV1195.Superseded values are not recommended for survey control.
 HV1195
 HV1195.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1195.See file dsdata.pdf to determine how the superseded data were derived.
 HV1195
 HV1195_MARKER: Q = CHISELED SQUARE
 HV1195_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1195_SP_SET: BRIDGE
 HV1195_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1195
 HV1195  HISTORY     - Date     Condition        Report By
 HV1195  HISTORY     - UNK      MONUMENTED       WSSC
 HV1195  HISTORY     - 1944     GOOD             WSSC
 HV1195
 HV1195                          STATION DESCRIPTION
 HV1195
 HV1195'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1195'0.2 MI E FROM BRIGHTSEAT.
 HV1195'ON THE OLD LANDOVER-MARLBORO PIKE, AT A BRIDGE OVER A SMALL
 HV1195'STREAM, AND ON THE NORTHWEST WING WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1199 ***********************************************************************
 HV1199  DESIGNATION -  2320 WSSC
 HV1199  PID         -  HV1199
 HV1199  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1199  COUNTRY     -  US
 HV1199  USGS QUAD   -  LANHAM (2016)
 HV1199
 HV1199                         *CURRENT SURVEY CONTROL
 HV1199  ______________________________________________________________________
 HV1199* NAD 83(1986) POSITION- 38 54 14.     (N) 076 50 03.     (W)   SCALED
 HV1199* NAVD 88 ORTHO HEIGHT -    48.74  (+/-2cm)      159.9   (feet) VERTCON3
 HV1199  ______________________________________________________________________
 HV1199  GEOID HEIGHT    -        -32.509 (meters)                     GEOID18
 HV1199  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1199
 HV1199.The horizontal coordinates were scaled from a map and have
 HV1199.an estimated accuracy of +/- 6 seconds.
 HV1199
 HV1199.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1199.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1199
 HV1199.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1199.GEOID18 height accuracy estimate available here.
 HV1199
 HV1199.The vertical order pertains to the NGVD 29 superseded value.
 HV1199
 HV1199.Click photographs - Photos may exist for this station.
 HV1199
 HV1199;                    North         East    Units  Estimated Accuracy
 HV1199;SPC MD       -   137,350.      414,380.      MT  (+/- 180 meters Scaled)
 HV1199
 HV1199_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ409077(NAD 83)
 HV1199
 HV1199                          SUPERSEDED SURVEY CONTROL
 HV1199
 HV1199  NGVD 29 (11/26/84)   48.988  (m)          160.72   (f) ADJUSTED    2 0
 HV1199
 HV1199.Superseded values are not recommended for survey control.
 HV1199
 HV1199.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1199.See file dsdata.pdf to determine how the superseded data were derived.
 HV1199
 HV1199_MARKER: Q = CHISELED SQUARE
 HV1199_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1199_SP_SET: CULVERT
 HV1199_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1199
 HV1199  HISTORY     - Date     Condition        Report By
 HV1199  HISTORY     - 1944     MONUMENTED       WSSC
 HV1199  HISTORY     - 1944     GOOD             WSSC
 HV1199
 HV1199                          STATION DESCRIPTION
 HV1199
 HV1199'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1199'0.4 MI NW FROM LARGO.
 HV1199'ON THE OLD LANDOVER-MARLBORO PIKE, AT A CONCRETE CULVERT UNDER
 HV1199'THE ROAD, AND ON THE WEST END OF THE NORTH HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1303 ***********************************************************************
 HV1303  DESIGNATION -  2321 WSSC
 HV1303  PID         -  HV1303
 HV1303  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1303  COUNTRY     -  US
 HV1303  USGS QUAD   -  LANHAM (2016)
 HV1303
 HV1303                         *CURRENT SURVEY CONTROL
 HV1303  ______________________________________________________________________
 HV1303* NAD 83(1986) POSITION- 38 53 04.     (N) 076 51 37.     (W)   SCALED
 HV1303* NAVD 88 ORTHO HEIGHT -    40.26  (+/-2cm)      132.1   (feet) VERTCON3
 HV1303  ______________________________________________________________________
 HV1303  GEOID HEIGHT    -        -32.466 (meters)                     GEOID18
 HV1303  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1303
 HV1303.The horizontal coordinates were scaled from a map and have
 HV1303.an estimated accuracy of +/- 6 seconds.
 HV1303
 HV1303.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1303.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1303
 HV1303.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1303.GEOID18 height accuracy estimate available here.
 HV1303
 HV1303.The vertical order pertains to the NGVD 29 superseded value.
 HV1303
 HV1303.Click photographs - Photos may exist for this station.
 HV1303
 HV1303;                    North         East    Units  Estimated Accuracy
 HV1303;SPC MD       -   135,190.      412,120.      MT  (+/- 180 meters Scaled)
 HV1303
 HV1303_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ386055(NAD 83)
 HV1303
 HV1303                          SUPERSEDED SURVEY CONTROL
 HV1303
 HV1303  NGVD 29 (11/26/84)   40.500  (m)          132.87   (f) ADJUSTED    2 0
 HV1303
 HV1303.Superseded values are not recommended for survey control.
 HV1303
 HV1303.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1303.See file dsdata.pdf to determine how the superseded data were derived.
 HV1303
 HV1303_MARKER: Q = CHISELED SQUARE
 HV1303_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1303_SP_SET: BRIDGE
 HV1303_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1303
 HV1303  HISTORY     - Date     Condition        Report By
 HV1303  HISTORY     - 1944     MONUMENTED       WSSC
 HV1303
 HV1303                          STATION DESCRIPTION
 HV1303
 HV1303'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1303'0.4 MI SE FROM RANDOLPH VILLAGE.
 HV1303'ON RITCHIE ROAD, 0.4 MILE SOUTH OF CENTRAL AVENUE, AT THE NORTHEAST
 HV1303'SIDE OF A BRIDGE OVER A SMALL STREAM, AND ON THE TOP OF THE
 HV1303'PARAPET WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1304 ***********************************************************************
 HV1304  DESIGNATION -  2322 WSSC
 HV1304  PID         -  HV1304
 HV1304  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1304  COUNTRY     -  US
 HV1304  USGS QUAD   -  LANHAM (2016)
 HV1304
 HV1304                         *CURRENT SURVEY CONTROL
 HV1304  ______________________________________________________________________
 HV1304* NAD 83(1986) POSITION- 38 52 41.     (N) 076 51 29.     (W)   SCALED
 HV1304* NAVD 88 ORTHO HEIGHT -    46.11  (+/-2cm)      151.3   (feet) VERTCON3
 HV1304  ______________________________________________________________________
 HV1304  GEOID HEIGHT    -        -32.481 (meters)                     GEOID18
 HV1304  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1304
 HV1304.The horizontal coordinates were scaled from a map and have
 HV1304.an estimated accuracy of +/- 6 seconds.
 HV1304
 HV1304.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1304.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1304
 HV1304.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1304.GEOID18 height accuracy estimate available here.
 HV1304
 HV1304.The vertical order pertains to the NGVD 29 superseded value.
 HV1304
 HV1304.Click photographs - Photos may exist for this station.
 HV1304
 HV1304;                    North         East    Units  Estimated Accuracy
 HV1304;SPC MD       -   134,480.      412,320.      MT  (+/- 180 meters Scaled)
 HV1304
 HV1304_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ388048(NAD 83)
 HV1304
 HV1304                          SUPERSEDED SURVEY CONTROL
 HV1304
 HV1304  NGVD 29 (11/26/84)   46.358  (m)          152.09   (f) ADJUSTED    2 0
 HV1304
 HV1304.Superseded values are not recommended for survey control.
 HV1304
 HV1304.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1304.See file dsdata.pdf to determine how the superseded data were derived.
 HV1304
 HV1304_MARKER: Z = SEE DESCRIPTION
 HV1304_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1304_SP_SET: WALNUT TREE ROOT
 HV1304_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1304
 HV1304  HISTORY     - Date     Condition        Report By
 HV1304  HISTORY     - 1944     MONUMENTED       WSSC
 HV1304
 HV1304                          STATION DESCRIPTION
 HV1304
 HV1304'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1304'0.9 MI SE FROM RANDOLPH VILLAGE.
 HV1304'ON RITCHIE ROAD, 0.9 MILE SOUTHEAST OF CENTRAL AVENUE, ON THE
 HV1304'NORTHEAST SIDE OF THE ROAD, AND IN THE NORTH ROOT OF A 18-INCH
 HV1304'WALNUT TREE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2705 ***********************************************************************
 JV2705  DESIGNATION -  2334 WSSC
 JV2705  PID         -  JV2705
 JV2705  STATE/COUNTY-  MD/MONTGOMERY
 JV2705  COUNTRY     -  US
 JV2705  USGS QUAD   -  KENSINGTON (2016)
 JV2705
 JV2705                         *CURRENT SURVEY CONTROL
 JV2705  ______________________________________________________________________
 JV2705* NAD 83(1986) POSITION- 39 05 03.     (N) 077 07 09.     (W)   SCALED
 JV2705* NAVD 88 ORTHO HEIGHT -   117.19  (+/-2cm)      384.5   (feet) VERTCON3
 JV2705  ______________________________________________________________________
 JV2705  GEOID HEIGHT    -        -31.764 (meters)                     GEOID18
 JV2705  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2705
 JV2705.The horizontal coordinates were scaled from a map and have
 JV2705.an estimated accuracy of +/- 6 seconds.
 JV2705
 JV2705.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2705.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2705
 JV2705.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2705.GEOID18 height accuracy estimate available here.
 JV2705
 JV2705.The vertical order pertains to the NGVD 29 superseded value.
 JV2705
 JV2705.Click photographs - Photos may exist for this station.
 JV2705
 JV2705;                    North         East    Units  Estimated Accuracy
 JV2705;SPC MD       -   157,360.      389,690.      MT  (+/- 180 meters Scaled)
 JV2705
 JV2705_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ167282(NAD 83)
 JV2705
 JV2705                          SUPERSEDED SURVEY CONTROL
 JV2705
 JV2705  NGVD 29 (11/26/84)  117.410  (m)          385.20   (f) ADJUSTED    2 0
 JV2705
 JV2705.Superseded values are not recommended for survey control.
 JV2705
 JV2705.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2705.See file dsdata.pdf to determine how the superseded data were derived.
 JV2705
 JV2705_MARKER: B = BOLT
 JV2705_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2705_SP_SET: TREE
 JV2705_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2705
 JV2705  HISTORY     - Date     Condition        Report By
 JV2705  HISTORY     - UNK      MONUMENTED       WSSC
 JV2705  HISTORY     - 1939     GOOD             WSSC
 JV2705
 JV2705                          STATION DESCRIPTION
 JV2705
 JV2705'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2705'1.5 MI E FROM ROCKVILLE.
 JV2705'ON NORBECK ROAD, 0.4 MILE WEST OF ROCK CREEK, ON THE TOP OF A
 JV2705'HILL, IN A PASTURE ON THE NORTH SIDE OF THE ROAD, AND IN THE
 JV2705'NORTHWEST ROOT OF A 14-INCH POPLAR TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2707 ***********************************************************************
 JV2707  DESIGNATION -  2335 WSSC
 JV2707  PID         -  JV2707
 JV2707  STATE/COUNTY-  MD/MONTGOMERY
 JV2707  COUNTRY     -  US
 JV2707  USGS QUAD   -  KENSINGTON (2016)
 JV2707
 JV2707                         *CURRENT SURVEY CONTROL
 JV2707  ______________________________________________________________________
 JV2707* NAD 83(1986) POSITION- 39 05 45.     (N) 077 06 36.     (W)   SCALED
 JV2707* NAVD 88 ORTHO HEIGHT -   111.66  (+/-2cm)      366.3   (feet) VERTCON3
 JV2707  ______________________________________________________________________
 JV2707  GEOID HEIGHT    -        -31.771 (meters)                     GEOID18
 JV2707  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2707
 JV2707.The horizontal coordinates were scaled from a map and have
 JV2707.an estimated accuracy of +/- 6 seconds.
 JV2707
 JV2707.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2707.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2707
 JV2707.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2707.GEOID18 height accuracy estimate available here.
 JV2707
 JV2707.The vertical order pertains to the NGVD 29 superseded value.
 JV2707
 JV2707.Click photographs - Photos may exist for this station.
 JV2707
 JV2707;                    North         East    Units  Estimated Accuracy
 JV2707;SPC MD       -   158,650.      390,480.      MT  (+/- 180 meters Scaled)
 JV2707
 JV2707_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ175295(NAD 83)
 JV2707
 JV2707                          SUPERSEDED SURVEY CONTROL
 JV2707
 JV2707  NGVD 29 (11/26/84)  111.877  (m)          367.05   (f) ADJUSTED    2 0
 JV2707
 JV2707.Superseded values are not recommended for survey control.
 JV2707
 JV2707.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2707.See file dsdata.pdf to determine how the superseded data were derived.
 JV2707
 JV2707_MARKER: Z = SEE DESCRIPTION
 JV2707_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2707_SP_SET: TREE
 JV2707_STAMPING: WSSC 2335
 JV2707_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2707
 JV2707  HISTORY     - Date     Condition        Report By
 JV2707  HISTORY     - UNK      MONUMENTED       WSSC
 JV2707  HISTORY     - 1939     GOOD             WSSC
 JV2707
 JV2707                          STATION DESCRIPTION
 JV2707
 JV2707'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2707'2 MI W FROM NORBECK.
 JV2707'ON NORBECK ROAD, AT THE JUNCTION OF A PRIVATE ROAD LEADING
 JV2707'SOUTH, ON THE SOUTH SIDE OF NORBECK ROAD, ON THE WEST SIDE OF THE
 JV2707'PRIVATE ROAD, AND IN THE NORTH ROOT OF A 24-INCH POPLAR TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2709 ***********************************************************************
 JV2709  DESIGNATION -  2336 WSSC
 JV2709  PID         -  JV2709
 JV2709  STATE/COUNTY-  MD/MONTGOMERY
 JV2709  COUNTRY     -  US
 JV2709  USGS QUAD   -  KENSINGTON (2016)
 JV2709
 JV2709                         *CURRENT SURVEY CONTROL
 JV2709  ______________________________________________________________________
 JV2709* NAD 83(1986) POSITION- 39 06 02.     (N) 077 05 41.     (W)   SCALED
 JV2709* NAVD 88 ORTHO HEIGHT -   139.15  (+/-2cm)      456.5   (feet) VERTCON3
 JV2709  ______________________________________________________________________
 JV2709  GEOID HEIGHT    -        -31.790 (meters)                     GEOID18
 JV2709  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2709
 JV2709.The horizontal coordinates were scaled from a map and have
 JV2709.an estimated accuracy of +/- 6 seconds.
 JV2709
 JV2709.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2709.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2709
 JV2709.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2709.GEOID18 height accuracy estimate available here.
 JV2709
 JV2709.The vertical order pertains to the NGVD 29 superseded value.
 JV2709
 JV2709.Click photographs - Photos may exist for this station.
 JV2709
 JV2709;                    North         East    Units  Estimated Accuracy
 JV2709;SPC MD       -   159,170.      391,810.      MT  (+/- 180 meters Scaled)
 JV2709
 JV2709_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ188300(NAD 83)
 JV2709
 JV2709                          SUPERSEDED SURVEY CONTROL
 JV2709
 JV2709  NGVD 29 (11/26/84)  139.369  (m)          457.25   (f) ADJUSTED    2 0
 JV2709
 JV2709.Superseded values are not recommended for survey control.
 JV2709
 JV2709.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2709.See file dsdata.pdf to determine how the superseded data were derived.
 JV2709
 JV2709_MARKER: Q = CHISELED SQUARE
 JV2709_SETTING: 65 = SET IN UNSPECIFIED ROCK OR BOULDER
 JV2709_SP_SET: UNSPECIFIED ROCK
 JV2709_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2709
 JV2709  HISTORY     - Date     Condition        Report By
 JV2709  HISTORY     - UNK      MONUMENTED       WSSC
 JV2709  HISTORY     - 1939     GOOD             WSSC
 JV2709
 JV2709                          STATION DESCRIPTION
 JV2709
 JV2709'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2709'1 MI W FROM NORBECK.
 JV2709'ON NORBECK ROAD, AT THE ENTRANCE TO MANOR COUNTRY CLUB, ON THE
 JV2709'SOUTH SIDE OF THE ROAD, IN THE PARK FORMED BY THE ENTRANCE ROADS,
 JV2709'AND ON THE TOP OF A ROCK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2710 ***********************************************************************
 JV2710  DESIGNATION -  2337 WSSC
 JV2710  PID         -  JV2710
 JV2710  STATE/COUNTY-  MD/MONTGOMERY
 JV2710  COUNTRY     -  US
 JV2710  USGS QUAD   -  KENSINGTON (2016)
 JV2710
 JV2710                         *CURRENT SURVEY CONTROL
 JV2710  ______________________________________________________________________
 JV2710* NAD 83(1986) POSITION- 39 06 13.     (N) 077 05 17.     (W)   SCALED
 JV2710* NAVD 88 ORTHO HEIGHT -   134.12  (+/-2cm)      440.0   (feet) VERTCON3
 JV2710  ______________________________________________________________________
 JV2710  GEOID HEIGHT    -        -31.798 (meters)                     GEOID18
 JV2710  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2710
 JV2710.The horizontal coordinates were scaled from a map and have
 JV2710.an estimated accuracy of +/- 6 seconds.
 JV2710
 JV2710.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2710.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2710
 JV2710.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2710.GEOID18 height accuracy estimate available here.
 JV2710
 JV2710.The vertical order pertains to the NGVD 29 superseded value.
 JV2710
 JV2710.Click photographs - Photos may exist for this station.
 JV2710
 JV2710;                    North         East    Units  Estimated Accuracy
 JV2710;SPC MD       -   159,510.      392,380.      MT  (+/- 180 meters Scaled)
 JV2710
 JV2710_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ194303(NAD 83)
 JV2710
 JV2710                          SUPERSEDED SURVEY CONTROL
 JV2710
 JV2710  NGVD 29 (11/26/84)  134.330  (m)          440.71   (f) ADJUSTED    2 0
 JV2710
 JV2710.Superseded values are not recommended for survey control.
 JV2710
 JV2710.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2710.See file dsdata.pdf to determine how the superseded data were derived.
 JV2710
 JV2710_MARKER: Z = SEE DESCRIPTION
 JV2710_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2710_SP_SET: TREE
 JV2710_STAMPING: WSSC 2337
 JV2710_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2710
 JV2710  HISTORY     - Date     Condition        Report By
 JV2710  HISTORY     - UNK      MONUMENTED       WSSC
 JV2710  HISTORY     - 1939     GOOD             WSSC
 JV2710
 JV2710                          STATION DESCRIPTION
 JV2710
 JV2710'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2710'0.6 MI W FROM NORBECK.
 JV2710'ON NORBECK ROAD, AT THE SOUTHEAST CORNER OF THE INTERSECTION OF
 JV2710'A ROAD LEADING TO MANOR COUNTRY CLUB, AND IN THE NORTHWEST ROOT
 JV2710'OF A TWIN LOCUST TREE. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6560 ***********************************************************************
 JV6560  DESIGNATION -  2340011
 JV6560  PID         -  JV6560
 JV6560  STATE/COUNTY-  MD/HOWARD
 JV6560  COUNTRY     -  US
 JV6560  USGS QUAD   -  SAVAGE (2016)
 JV6560
 JV6560                         *CURRENT SURVEY CONTROL
 JV6560  ______________________________________________________________________
 JV6560* NAD 83(1991) POSITION- 39 10 53.09932(N) 076 52 25.94582(W)   ADJUSTED
 JV6560* NAVD 88 ORTHO HEIGHT -   119.6   (meters)      392.    (feet) VERTCON3
 JV6560  ______________________________________________________________________
 JV6560  GEOID HEIGHT    -        -32.164 (meters)                     GEOID18
 JV6560  LAPLACE CORR    -         -3.61  (seconds)                    DEFLEC18
 JV6560  HORZ ORDER      -  THIRD
 JV6560
 JV6560.The horizontal coordinates were established by classical geodetic methods
 JV6560.and adjusted by the National Geodetic Survey in January 1992.
 JV6560
 JV6560.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6560.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6560
 JV6560.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6560.GEOID18 height accuracy estimate available here.
 JV6560
 JV6560.Click photographs - Photos may exist for this station.
 JV6560
 JV6560.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6560
 JV6560. The following values were computed from the NAD 83(1991) position.
 JV6560
 JV6560;                    North         East     Units Scale Factor Converg.
 JV6560;SPC MD       -   168,153.227   410,897.505   MT  0.99996404   +0 04 45.0
 JV6560;SPC MD       -   551,682.71  1,348,086.23   sFT  0.99996404   +0 04 45.0
 JV6560;UTM  18      - 4,338,581.348   338,147.266   MT  0.99992256   -1 11 02.9
 JV6560
 JV6560!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6560!SPC MD       -   0.99998628  x   0.99996404  =   0.99995032
 JV6560!UTM  18      -   0.99998628  x   0.99992256  =   0.99990884
 JV6560
 JV6560_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3814738581(NAD 83)
 JV6560
 JV6560                          SUPERSEDED SURVEY CONTROL
 JV6560
 JV6560  NAD 83(1986)-  39 10 53.09777(N)    076 52 25.95491(W) AD(       ) 3
 JV6560  NGVD 29 (02/12/91)  119.8    (m)          393.     (f) VERT ANG       
 JV6560
 JV6560.Superseded values are not recommended for survey control.
 JV6560
 JV6560.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6560.See file dsdata.pdf to determine how the superseded data were derived.
 JV6560
 JV6560_MARKER: DD = SURVEY DISK
 JV6560_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6560_MARK LOGO: MD-027
 JV6560_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6560_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6560+STABILITY: SURFACE MOTION
 JV6560
 JV6560  HISTORY     - Date     Condition        Report By
 JV6560  HISTORY     - 1983     MONUMENTED       MD-027
 JV6560
 JV6560                          STATION DESCRIPTION
 JV6560
 JV6560'DESCRIBED BY HOWARD COUNTY MARYLAND 1983
 JV6560'THE STATION IS LOCATED ABOUT 25.75 KM (16.00 MI) SOUTHWEST OF
 JV6560'BALTIMORE, 9 KM (5.60 MI) NORTH OF LAUREL AND 3.25 KM (2.00 MI) SOUTH
 JV6560'OF COLUMBIA.  IT IS IN THE MEDIUM OF STATE HIGHWAY 32 WHERE IT PASSES
 JV6560'OVER STATE HIGHWAY 29 WHICH IS JUST EAST OF SIMPSONVILLE.
 JV6560'OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV6560'THE LOCATION OF THIS MARKER ALSO SERVES AS A TO REACH.
 JV6560'THE STATION MARK IS A HOWARD COUNTY PUBLIC WORKS DISK WITH NO STAMPING
 JV6560'AND IT IS SET IN THE TOP OF A 0.15 M (0.5 FT) ROUND CONCRETE MONUMENT
 JV6560'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 26.6 M
 JV6560'(87.3 FT) EAST OF THE MOST SOUTHEAST POINT OF A PARAPET WALL ALONG THE
 JV6560'SOUTHEAST SIDE OF WEST BOUND LANE OF STATE HIGHWAY 32, 17.6 M
 JV6560'(57.7 FT) SOUTHWEST OF THE MOST SOUTHWEST POINT OF A PARAPET WALL
 JV6560'ALONG THE SOUTHWEST SIDE OF THE EAST BOUND LANE OF STATE HIGHWAY 32,
 JV6560'ABOUT 4.5 M (14.8 FT) ABOVE THE DUAL LANES OF STATE HIGWAY 29 AND ON
 JV6560'THE SOUTHEAST PART OF STATE HIGHWAY 29.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2695 ***********************************************************************
 JV2695  DESIGNATION -  2360 WSSC
 JV2695  PID         -  JV2695
 JV2695  STATE/COUNTY-  MD/MONTGOMERY
 JV2695  COUNTRY     -  US
 JV2695  USGS QUAD   -  KENSINGTON (2016)
 JV2695
 JV2695                         *CURRENT SURVEY CONTROL
 JV2695  ______________________________________________________________________
 JV2695* NAD 83(1986) POSITION- 39 01 54.     (N) 077 04 29.     (W)   SCALED
 JV2695* NAVD 88 ORTHO HEIGHT -    99.04  (+/-2cm)      324.9   (feet) VERTCON3
 JV2695  ______________________________________________________________________
 JV2695  GEOID HEIGHT    -        -31.873 (meters)                     GEOID18
 JV2695  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2695
 JV2695.The horizontal coordinates were scaled from a map and have
 JV2695.an estimated accuracy of +/- 6 seconds.
 JV2695
 JV2695.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2695.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2695
 JV2695.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2695.GEOID18 height accuracy estimate available here.
 JV2695
 JV2695.The vertical order pertains to the NGVD 29 superseded value.
 JV2695
 JV2695.Click photographs - Photos may exist for this station.
 JV2695
 JV2695;                    North         East    Units  Estimated Accuracy
 JV2695;SPC MD       -   151,520.      393,530.      MT  (+/- 180 meters Scaled)
 JV2695
 JV2695_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ204223(NAD 83)
 JV2695
 JV2695                          SUPERSEDED SURVEY CONTROL
 JV2695
 JV2695  NGVD 29 (11/26/84)   99.260  (m)          325.66   (f) ADJUSTED    2 0
 JV2695
 JV2695.Superseded values are not recommended for survey control.
 JV2695
 JV2695.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2695.See file dsdata.pdf to determine how the superseded data were derived.
 JV2695
 JV2695_MARKER: Z = SEE DESCRIPTION
 JV2695_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2695_SP_SET: METER BOX
 JV2695_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2695
 JV2695  HISTORY     - Date     Condition        Report By
 JV2695  HISTORY     - UNK      MONUMENTED       WSSC
 JV2695  HISTORY     - 1944     GOOD             CGS
 JV2695  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV2695
 JV2695                          STATION DESCRIPTION
 JV2695
 JV2695'DESCRIBED BY COAST AND GEODETIC SURVEY 1944
 JV2695'AT KENSINGTON.
 JV2695'AT THE INTERSECTION OF CONCORD STREET AND FARRAGUT STREET, AND
 JV2695'IN A METER-BOX COVER. BRASS SCREW.
 JV2695
 JV2695                          STATION RECOVERY (1951)
 JV2695
 JV2695'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV2695'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2696 ***********************************************************************
 JV2696  DESIGNATION -  2361 WSSC
 JV2696  PID         -  JV2696
 JV2696  STATE/COUNTY-  MD/MONTGOMERY
 JV2696  COUNTRY     -  US
 JV2696  USGS QUAD   -  KENSINGTON (2016)
 JV2696
 JV2696                         *CURRENT SURVEY CONTROL
 JV2696  ______________________________________________________________________
 JV2696* NAD 83(1986) POSITION- 39 01 46.     (N) 077 04 29.     (W)   SCALED
 JV2696* NAVD 88 ORTHO HEIGHT -    99.29  (+/-2cm)      325.8   (feet) VERTCON3
 JV2696  ______________________________________________________________________
 JV2696  GEOID HEIGHT    -        -31.875 (meters)                     GEOID18
 JV2696  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2696
 JV2696.The horizontal coordinates were scaled from a map and have
 JV2696.an estimated accuracy of +/- 6 seconds.
 JV2696
 JV2696.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2696.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2696
 JV2696.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2696.GEOID18 height accuracy estimate available here.
 JV2696
 JV2696.The vertical order pertains to the NGVD 29 superseded value.
 JV2696
 JV2696.Click photographs - Photos may exist for this station.
 JV2696
 JV2696;                    North         East    Units  Estimated Accuracy
 JV2696;SPC MD       -   151,280.      393,530.      MT  (+/- 180 meters Scaled)
 JV2696
 JV2696_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ204220(NAD 83)
 JV2696
 JV2696                          SUPERSEDED SURVEY CONTROL
 JV2696
 JV2696  NGVD 29 (11/26/84)   99.507  (m)          326.47   (f) ADJUSTED    2 0
 JV2696
 JV2696.Superseded values are not recommended for survey control.
 JV2696
 JV2696.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2696.See file dsdata.pdf to determine how the superseded data were derived.
 JV2696
 JV2696_MARKER: Z = SEE DESCRIPTION
 JV2696_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2696_SP_SET: METER BOX
 JV2696_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2696
 JV2696  HISTORY     - Date     Condition        Report By
 JV2696  HISTORY     - UNK      MONUMENTED       WSSC
 JV2696  HISTORY     - 1944     GOOD             CGS
 JV2696  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV2696
 JV2696                          STATION DESCRIPTION
 JV2696
 JV2696'DESCRIBED BY COAST AND GEODETIC SURVEY 1944
 JV2696'AT KENSINGTON.
 JV2696'AT THE INTERSECTION OF CONCORD STREET AND METROPOLITAN AVENUE,
 JV2696'AND IN A METER-BOX COVER. BRASS SCREW.
 JV2696
 JV2696                          STATION RECOVERY (1951)
 JV2696
 JV2696'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV2696'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1548 ***********************************************************************
 JV1548  DESIGNATION -  24 PRR
 JV1548  PID         -  JV1548
 JV1548  STATE/COUNTY-  MD/BALTIMORE
 JV1548  COUNTRY     -  US
 JV1548  USGS QUAD   -  HEREFORD (2016)
 JV1548
 JV1548                         *CURRENT SURVEY CONTROL
 JV1548  ______________________________________________________________________
 JV1548* NAD 83(1986) POSITION- 39 33 52.     (N) 076 37 45.     (W)   SCALED
 JV1548* NAVD 88 ORTHO HEIGHT -    88.428 (meters)      290.12  (feet) ADJUSTED
 JV1548  ______________________________________________________________________
 JV1548  GEOID HEIGHT    -        -32.349 (meters)                     GEOID18
 JV1548  DYNAMIC HEIGHT  -         88.383 (meters)      289.97  (feet) COMP
 JV1548  MODELED GRAVITY -    980,118.6   (mgal)                       NAVD 88
 JV1548
 JV1548  VERT ORDER      -  SECOND    CLASS 0
 JV1548
 JV1548.The horizontal coordinates were scaled from a map and have
 JV1548.an estimated accuracy of +/- 6 seconds.
 JV1548
 JV1548.The orthometric height was determined by differential leveling and
 JV1548.adjusted by the NATIONAL GEODETIC SURVEY
 JV1548.in June 1991.
 JV1548
 JV1548.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1548.GEOID18 height accuracy estimate available here.
 JV1548
 JV1548.Click photographs - Photos may exist for this station.
 JV1548
 JV1548.The dynamic height is computed by dividing the NAVD 88
 JV1548.geopotential number by the normal gravity value computed on the
 JV1548.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1548.degrees latitude (g = 980.6199 gals.).
 JV1548
 JV1548.The modeled gravity was interpolated from observed gravity values.
 JV1548
 JV1548;                    North         East    Units  Estimated Accuracy
 JV1548;SPC MD       -   210,740.      431,870.      MT  (+/- 180 meters Scaled)
 JV1548
 JV1548_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ600806(NAD 83)
 JV1548
 JV1548                          SUPERSEDED SURVEY CONTROL
 JV1548
 JV1548  NGVD 29 (11/26/84)   88.669  (m)          290.91   (f) ADJUSTED    2 0
 JV1548
 JV1548.Superseded values are not recommended for survey control.
 JV1548
 JV1548.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1548.See file dsdata.pdf to determine how the superseded data were derived.
 JV1548
 JV1548_MARKER: B = BOLT
 JV1548_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1548_SP_SET: BRIDGE
 JV1548_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1548
 JV1548  HISTORY     - Date     Condition        Report By
 JV1548  HISTORY     - UNK      MONUMENTED       PRR
 JV1548  HISTORY     - 1935     GOOD             CGS
 JV1548
 JV1548                          STATION DESCRIPTION
 JV1548
 JV1548'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1548'0.6 MI S FROM CORBETT.
 JV1548'0.6 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV1548'AT CORBETT, BALTIMORE COUNTY, 0.6 MILE NORTH OF MILEPOST 21, IN
 JV1548'THE TOP OF THE SOUTHWEST CORNER OF BRIDGE 21.65, AND 9 FEET WEST
 JV1548'OF THE CENTERLINE OF THE WEST TRACK.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1436 ***********************************************************************
 HV1436  DESIGNATION -  24 TAKOMA PARK WSSC
 HV1436  PID         -  HV1436
 HV1436  STATE/COUNTY-  MD/MONTGOMERY
 HV1436  COUNTRY     -  US
 HV1436  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1436
 HV1436                         *CURRENT SURVEY CONTROL
 HV1436  ______________________________________________________________________
 HV1436* NAD 83(1986) POSITION- 38 59 11.     (N) 076 59 48.     (W)   SCALED
 HV1436* NAVD 88 ORTHO HEIGHT -    58.286 (meters)      191.23  (feet) ADJUSTED
 HV1436  ______________________________________________________________________
 HV1436  GEOID HEIGHT    -        -32.023 (meters)                     GEOID18
 HV1436  DYNAMIC HEIGHT  -         58.255 (meters)      191.12  (feet) COMP
 HV1436  MODELED GRAVITY -    980,095.5   (mgal)                       NAVD 88
 HV1436
 HV1436  VERT ORDER      -  SECOND    CLASS I
 HV1436
 HV1436.The horizontal coordinates were scaled from a map and have
 HV1436.an estimated accuracy of +/- 6 seconds.
 HV1436
 HV1436.The orthometric height was determined by differential leveling and
 HV1436.adjusted by the NATIONAL GEODETIC SURVEY
 HV1436.in June 1991.
 HV1436
 HV1436.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1436.GEOID18 height accuracy estimate available here.
 HV1436
 HV1436.Click photographs - Photos may exist for this station.
 HV1436
 HV1436.The dynamic height is computed by dividing the NAVD 88
 HV1436.geopotential number by the normal gravity value computed on the
 HV1436.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1436.degrees latitude (g = 980.6199 gals.).
 HV1436
 HV1436.The modeled gravity was interpolated from observed gravity values.
 HV1436
 HV1436;                    North         East    Units  Estimated Accuracy
 HV1436;SPC MD       -   146,500.      400,290.      MT  (+/- 180 meters Scaled)
 HV1436
 HV1436_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ270171(NAD 83)
 HV1436
 HV1436                          SUPERSEDED SURVEY CONTROL
 HV1436
 HV1436  NGVD 29 (11/26/84)   58.502  (m)          191.94   (f) ADJUSTED    2 1
 HV1436
 HV1436.Superseded values are not recommended for survey control.
 HV1436
 HV1436.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1436.See file dsdata.pdf to determine how the superseded data were derived.
 HV1436
 HV1436_MARKER: Z = SEE DESCRIPTION
 HV1436_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1436_STAMPING: 24
 HV1436_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1436+STABILITY: SURFACE MOTION
 HV1436
 HV1436  HISTORY     - Date     Condition        Report By
 HV1436  HISTORY     - UNK      MONUMENTED       WSSC
 HV1436  HISTORY     - 1952     GOOD             CGS
 HV1436
 HV1436                          STATION DESCRIPTION
 HV1436
 HV1436'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV1436'AT TAKOMA PARK.
 HV1436'AT TAKOMA PARK, MONTGOMERY COUNTY, IN THE NORTH ANGLE OF THE
 HV1436'INTERSECTION OF CARROLL AVENUE AND GARLAND AVENUE, AT THE END OF
 HV1436'THE PARKING ON CARROLL AVENUE, 2 FEET FROM THE CORNER FORMED BY
 HV1436'THE CURB AND THE SIDEWALK, AND 1.6 FEET FROM THE CORNER FORMED
 HV1436'BY THE TWO SIDEWALKS.  A LARGE BRASS SCREW AND WASHER, STAMPED
 HV1436'24 AND SET IN THE TOP OF A 5-INCH SQUARE STONE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2569 ***********************************************************************
 JV2569  DESIGNATION -  2414 WSSC
 JV2569  PID         -  JV2569
 JV2569  STATE/COUNTY-  MD/HOWARD
 JV2569  COUNTRY     -  US
 JV2569  USGS QUAD   -  WOODBINE (2016)
 JV2569
 JV2569                         *CURRENT SURVEY CONTROL
 JV2569  ______________________________________________________________________
 JV2569* NAD 83(1986) POSITION- 39 15 52.     (N) 077 00 47.     (W)   SCALED
 JV2569* NAVD 88 ORTHO HEIGHT -   162.43  (+/-2cm)      532.9   (feet) VERTCON3
 JV2569  ______________________________________________________________________
 JV2569  GEOID HEIGHT    -        -31.885 (meters)                     GEOID18
 JV2569  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2569
 JV2569.The horizontal coordinates were scaled from a map and have
 JV2569.an estimated accuracy of +/- 6 seconds.
 JV2569
 JV2569.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2569.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2569
 JV2569.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2569.GEOID18 height accuracy estimate available here.
 JV2569
 JV2569.The vertical order pertains to the NGVD 29 superseded value.
 JV2569
 JV2569.Click photographs - Photos may exist for this station.
 JV2569
 JV2569;                    North         East    Units  Estimated Accuracy
 JV2569;SPC MD       -   177,360.      398,870.      MT  (+/- 180 meters Scaled)
 JV2569
 JV2569_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ263480(NAD 83)
 JV2569
 JV2569                          SUPERSEDED SURVEY CONTROL
 JV2569
 JV2569  NGVD 29 (11/26/84)  162.641  (m)          533.60   (f) ADJUSTED    2 0
 JV2569
 JV2569.Superseded values are not recommended for survey control.
 JV2569
 JV2569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2569.See file dsdata.pdf to determine how the superseded data were derived.
 JV2569
 JV2569_MARKER: N = NAIL
 JV2569_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2569_SP_SET: TREE
 JV2569_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2569
 JV2569  HISTORY     - Date     Condition        Report By
 JV2569  HISTORY     - UNK      MONUMENTED       WSSC
 JV2569  HISTORY     - 1946     GOOD             WSSC
 JV2569
 JV2569                          STATION DESCRIPTION
 JV2569
 JV2569'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2569'0.4 MI N FROM GARY.
 JV2569'ABOUT 0.4 MILE NORTH ALONG THE GARY-GLENWOOD ROAD FROM THE
 JV2569'JUNCTION OF THE GARY-TRIADELPHIA ROAD AT GARY, HOWARD COUNTY,
 JV2569'ABOUT 100 FEET SOUTH OF THE JUNCTION OF THE FIRST ROAD LEADING
 JV2569'NORTHEAST, NORTH OF THE SCHOOLHOUSE, AT A 16-INCH HICKORY TREE
 JV2569'EAST OF THE ROAD, AND IN THE WEST ROOT.  A MASONRY NAIL AND
 JV2569'WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8111 ***********************************************************************
 AI8111  DESIGNATION -  2433
 AI8111  PID         -  AI8111
 AI8111  STATE/COUNTY-  MD/C OF BALTIMORE
 AI8111  COUNTRY     -  US
 AI8111  USGS QUAD   -  BALTIMORE EAST (2016)
 AI8111
 AI8111                         *CURRENT SURVEY CONTROL
 AI8111  ______________________________________________________________________
 AI8111* NAD 83(2011) POSITION- 39 20 57.05981(N) 076 36 01.40396(W)   ADJUSTED
 AI8111* NAD 83(2011) ELLIP HT-    70.499 (meters)        (06/27/12)   ADJUSTED
 AI8111* NAD 83(2011) EPOCH   -  2010.00
 AI8111* NAVD 88 ORTHO HEIGHT -   103.2   (meters)      339.    (feet) GPS OBS
 AI8111  ______________________________________________________________________
 AI8111  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8111  GEOID HEIGHT    -        -32.651 (meters)                     GEOID99
 AI8111  GEOID HEIGHT    -        -32.655 (meters)                     GEOID18
 AI8111  NAD 83(2011) X  -  1,144,545.634 (meters)                     COMP
 AI8111  NAD 83(2011) Y  - -4,804,444.761 (meters)                     COMP
 AI8111  NAD 83(2011) Z  -  4,022,413.969 (meters)                     COMP
 AI8111  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 AI8111
 AI8111  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8111  Standards:
 AI8111         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8111            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8111  -------------------------------------------------------------------
 AI8111  NETWORK    0.88   1.25           0.40   0.31   0.64      0.01691692
 AI8111  -------------------------------------------------------------------
 AI8111  Click here for local accuracies and other accuracy information.
 AI8111
 AI8111.The horizontal coordinates were established by GPS observations
 AI8111.and adjusted by the National Geodetic Survey in June 2012.
 AI8111
 AI8111.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8111.been affixed to the stable North American tectonic plate. See 
 AI8111.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8111
 AI8111.The horizontal coordinates are valid at the epoch date displayed above
 AI8111.which is a decimal equivalence of Year/Month/Day.
 AI8111
 AI8111.The orthometric height was determined by GPS observations and a
 AI8111.high-resolution geoid model.
 AI8111
 AI8111.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8111.GEOID18 height accuracy estimate available here.
 AI8111
 AI8111.Click photographs - Photos may exist for this station.
 AI8111
 AI8111.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8111
 AI8111.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8111
 AI8111.The ellipsoidal height was determined by GPS observations
 AI8111.and is referenced to NAD 83.
 AI8111
 AI8111. The following values were computed from the NAD 83(2011) position.
 AI8111
 AI8111;                    North         East     Units Scale Factor Converg.
 AI8111;SPC MD       -   186,846.155   434,445.324   MT  0.99998392   +0 15 02.9
 AI8111;SPC MD       -   613,011.09  1,425,342.70   sFT  0.99998392   +0 15 02.9
 AI8111;UTM  18      - 4,356,748.288   362,099.592   MT  0.99983414   -1 00 53.6
 AI8111
 AI8111!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8111!SPC MD       -   0.99998894  x   0.99998392  =   0.99997286
 AI8111!UTM  18      -   0.99998894  x   0.99983414  =   0.99982308
 AI8111
 AI8111_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6209956748(NAD 83)
 AI8111
 AI8111                          SUPERSEDED SURVEY CONTROL
 AI8111
 AI8111  NAD 83(2007)-  39 20 57.06003(N)    076 36 01.40472(W) AD(2002.00) 0
 AI8111  ELLIP H (02/10/07)   70.516  (m)                       GP(2002.00)    
 AI8111  ELLIP H (08/30/02)   70.524  (m)                       GP(       ) 4 2
 AI8111  NAD 83(1991)-  39 20 57.06028(N)    076 36 01.40450(W) AD(       ) 1
 AI8111  ELLIP H (10/26/00)   70.479  (m)                       GP(       ) 4 1
 AI8111
 AI8111.Superseded values are not recommended for survey control.
 AI8111
 AI8111.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8111.See file dsdata.pdf to determine how the superseded data were derived.
 AI8111
 AI8111_MARKER: B = BOLT
 AI8111_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 AI8111_MARK LOGO: MD0050
 AI8111_MAGNETIC: I = MARKER IS A STEEL ROD
 AI8111_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI8111_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8111+SATELLITE: SATELLITE OBSERVATIONS - October 14, 2013
 AI8111
 AI8111  HISTORY     - Date     Condition        Report By
 AI8111  HISTORY     - 1999     MONUMENTED       MD0050
 AI8111  HISTORY     - 20041229 GOOD             GEOCAC
 AI8111  HISTORY     - 20131014 GOOD             RKK
 AI8111
 AI8111                          STATION DESCRIPTION
 AI8111
 AI8111'DESCRIBED BY CITY OF BALTIMORE MARYLAND 1999
 AI8111'THE STATION IS LOCATED 4.31 MILES (6.94 KM) NORTH OF THE INNER HARBOR
 AI8111'OF BALTIMORE CITY.  THE POINT IS A LEAD PLUG IN THE CONCRETE WALK NEAR
 AI8111'THE N.W.  INTERSECTION OF WINSTON AVE.  AND KENILWORTH AVE.  IT IS
 AI8111'2.53 FT.  (0.77 M) N.W.  OF THE FRONT OF WALK, 1.67 FT.  (0.51 M) S.E.
 AI8111'OF BACK OF WALK, AND 2.71 S.E.  OF A FENCE POST AND 7.51 FT (2.29 M)
 AI8111'NORTH OF THE FACE OF CURB ON WINSTON AVE.
 AI8111
 AI8111                          STATION RECOVERY (2004)
 AI8111
 AI8111'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 AI8111'STATION IN SIDEWALK IN FRONT OF HOUSE AT 5700 KENILWORTH, ACROSS THE
 AI8111'STREET FROM WINSTON MIDDLE SCHOOL, AND APPROXIMATELY ONE-HALF MILE
 AI8111'EAST OF YORK ROAD.
 AI8111
 AI8111                          STATION RECOVERY (2013)
 AI8111
 AI8111'RECOVERY NOTE BY RK&K 2013 (CDM)
 AI8111'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2576 ***********************************************************************
 JV2576  DESIGNATION -  2436 WSSC
 JV2576  PID         -  JV2576
 JV2576  STATE/COUNTY-  MD/HOWARD
 JV2576  COUNTRY     -  US
 JV2576  USGS QUAD   -  WOODBINE (2016)
 JV2576
 JV2576                         *CURRENT SURVEY CONTROL
 JV2576  ______________________________________________________________________
 JV2576* NAD 83(1986) POSITION- 39 17 34.     (N) 077 03 00.     (W)   SCALED
 JV2576* NAVD 88 ORTHO HEIGHT -   160.82  (+/-2cm)      527.6   (feet) VERTCON3
 JV2576  ______________________________________________________________________
 JV2576  GEOID HEIGHT    -        -31.852 (meters)                     GEOID18
 JV2576  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2576
 JV2576.The horizontal coordinates were scaled from a map and have
 JV2576.an estimated accuracy of +/- 6 seconds.
 JV2576
 JV2576.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2576.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2576
 JV2576.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2576.GEOID18 height accuracy estimate available here.
 JV2576
 JV2576.The vertical order pertains to the NGVD 29 superseded value.
 JV2576
 JV2576.Click photographs - Photos may exist for this station.
 JV2576
 JV2576;                    North         East    Units  Estimated Accuracy
 JV2576;SPC MD       -   180,510.      395,690.      MT  (+/- 180 meters Scaled)
 JV2576
 JV2576_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ232512(NAD 83)
 JV2576
 JV2576                          SUPERSEDED SURVEY CONTROL
 JV2576
 JV2576  NGVD 29 (11/26/84)  161.037  (m)          528.34   (f) ADJUSTED    2 0
 JV2576
 JV2576.Superseded values are not recommended for survey control.
 JV2576
 JV2576.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2576.See file dsdata.pdf to determine how the superseded data were derived.
 JV2576
 JV2576_MARKER: N = NAIL
 JV2576_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2576_SP_SET: TREE
 JV2576_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2576
 JV2576  HISTORY     - Date     Condition        Report By
 JV2576  HISTORY     - UNK      MONUMENTED       WSSC
 JV2576  HISTORY     - 1946     GOOD             WSSC
 JV2576
 JV2576                          STATION DESCRIPTION
 JV2576
 JV2576'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2576'1.5 MI SE FROM DAISY.
 JV2576'ABOUT 1.5 MILES SOUTHEAST ALONG THE OLD ABANDONED GLENWOOD-DAISY
 JV2576'ROAD FROM DAISY, HOWARD COUNTY, ABOUT 100 FEET SOUTH OF A SHARP
 JV2576'BEND TO THE WEST, AT A 12-INCH CEDAR TREE ON THE WEST SIDE OF THE
 JV2576'ROAD, AND IN THE NORTH ROOT.  A MASONRY NAIL AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2580 ***********************************************************************
 JV2580  DESIGNATION -  2437 WSSC
 JV2580  PID         -  JV2580
 JV2580  STATE/COUNTY-  MD/HOWARD
 JV2580  COUNTRY     -  US
 JV2580  USGS QUAD   -  WOODBINE (2016)
 JV2580
 JV2580                         *CURRENT SURVEY CONTROL
 JV2580  ______________________________________________________________________
 JV2580* NAD 83(1986) POSITION- 39 17 35.     (N) 077 04 39.     (W)   SCALED
 JV2580* NAVD 88 ORTHO HEIGHT -   172.88  (+/-2cm)      567.2   (feet) VERTCON3
 JV2580  ______________________________________________________________________
 JV2580  GEOID HEIGHT    -        -31.834 (meters)                     GEOID18
 JV2580  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2580
 JV2580.The horizontal coordinates were scaled from a map and have
 JV2580.an estimated accuracy of +/- 6 seconds.
 JV2580
 JV2580.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2580.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2580
 JV2580.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2580.GEOID18 height accuracy estimate available here.
 JV2580
 JV2580.The vertical order pertains to the NGVD 29 superseded value.
 JV2580
 JV2580.Click photographs - Photos may exist for this station.
 JV2580
 JV2580;                    North         East    Units  Estimated Accuracy
 JV2580;SPC MD       -   180,540.      393,310.      MT  (+/- 180 meters Scaled)
 JV2580
 JV2580_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ208513(NAD 83)
 JV2580
 JV2580                          SUPERSEDED SURVEY CONTROL
 JV2580
 JV2580  NGVD 29 (11/26/84)  173.086  (m)          567.87   (f) ADJUSTED    2 0
 JV2580
 JV2580.Superseded values are not recommended for survey control.
 JV2580
 JV2580.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2580.See file dsdata.pdf to determine how the superseded data were derived.
 JV2580
 JV2580_MARKER: N = NAIL
 JV2580_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2580_SP_SET: TREE
 JV2580_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2580
 JV2580  HISTORY     - Date     Condition        Report By
 JV2580  HISTORY     - UNK      MONUMENTED       WSSC
 JV2580  HISTORY     - 1946     GOOD             WSSC
 JV2580
 JV2580                          STATION DESCRIPTION
 JV2580
 JV2580'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2580'0.5 MI W FROM DAISY.
 JV2580'ABOUT 0.5 MILE WEST ALONG THE DAIRY-ETCHISON ROAD FROM DAISY,
 JV2580'HOWARD COUNTY, AT A SHARP BEND TO THE SOUTHWEST, ABOUT 30 FEET
 JV2580'SOUTH OF THE CENTER LINE OF THE ROAD, AT A 30-INCH OAK TREE, AND
 JV2580'IN THE NORTH ROOT.  A MASONRY NAIL AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3609 ***********************************************************************
 JV3609  DESIGNATION -  2438 WSSC
 JV3609  PID         -  JV3609
 JV3609  STATE/COUNTY-  MD/HOWARD
 JV3609  COUNTRY     -  US
 JV3609  USGS QUAD   -  WOODBINE (2016)
 JV3609
 JV3609                         *CURRENT SURVEY CONTROL
 JV3609  ______________________________________________________________________
 JV3609* NAD 83(1986) POSITION- 39 17 30.     (N) 077 04 58.     (W)   SCALED
 JV3609* NAVD 88 ORTHO HEIGHT -   166.36  (+/-2cm)      545.8   (feet) VERTCON3
 JV3609  ______________________________________________________________________
 JV3609  GEOID HEIGHT    -        -31.831 (meters)                     GEOID18
 JV3609  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV3609
 JV3609.The horizontal coordinates were scaled from a map and have
 JV3609.an estimated accuracy of +/- 6 seconds.
 JV3609
 JV3609.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3609.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3609
 JV3609.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3609.GEOID18 height accuracy estimate available here.
 JV3609
 JV3609.The vertical order pertains to the NGVD 29 superseded value.
 JV3609
 JV3609.Click photographs - Photos may exist for this station.
 JV3609
 JV3609;                    North         East    Units  Estimated Accuracy
 JV3609;SPC MD       -   180,390.      392,860.      MT  (+/- 180 meters Scaled)
 JV3609
 JV3609_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ203512(NAD 83)
 JV3609
 JV3609                          SUPERSEDED SURVEY CONTROL
 JV3609
 JV3609  NGVD 29 (11/26/84)  166.565  (m)          546.47   (f) ADJUSTED    2 0
 JV3609
 JV3609.Superseded values are not recommended for survey control.
 JV3609
 JV3609.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3609.See file dsdata.pdf to determine how the superseded data were derived.
 JV3609
 JV3609_MARKER: Q = CHISELED SQUARE
 JV3609_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV3609_SP_SET: CULVERT
 JV3609_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3609
 JV3609  HISTORY     - Date     Condition        Report By
 JV3609  HISTORY     - UNK      MONUMENTED       WSSC
 JV3609  HISTORY     - 1946     GOOD             WSSC
 JV3609
 JV3609                          STATION DESCRIPTION
 JV3609
 JV3609'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV3609'0.8 MI SW FROM DAISY.
 JV3609'ABOUT 0.8 MILE SOUTHWEST ALONG THE DIASY-ETCHISON ROAD FROM
 JV3609'DAISY, HOWARD COUNTY, AT A CULVERT, AND ON THE CENTER OF THE
 JV3609'TOP OF THE WEST HEAD WALL.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2582 ***********************************************************************
 JV2582  DESIGNATION -  2446 WSSC
 JV2582  PID         -  JV2582
 JV2582  STATE/COUNTY-  MD/HOWARD
 JV2582  COUNTRY     -  US
 JV2582  USGS QUAD   -  WOODBINE (2016)
 JV2582
 JV2582                         *CURRENT SURVEY CONTROL
 JV2582  ______________________________________________________________________
 JV2582* NAD 83(1986) POSITION- 39 17 23.     (N) 077 05 11.     (W)   SCALED
 JV2582* NAVD 88 ORTHO HEIGHT -   162.17  (+/-2cm)      532.1   (feet) VERTCON3
 JV2582  ______________________________________________________________________
 JV2582  GEOID HEIGHT    -        -31.828 (meters)                     GEOID18
 JV2582  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2582
 JV2582.The horizontal coordinates were scaled from a map and have
 JV2582.an estimated accuracy of +/- 6 seconds.
 JV2582
 JV2582.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2582.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2582
 JV2582.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2582.GEOID18 height accuracy estimate available here.
 JV2582
 JV2582.The vertical order pertains to the NGVD 29 superseded value.
 JV2582
 JV2582.Click photographs - Photos may exist for this station.
 JV2582
 JV2582;                    North         East    Units  Estimated Accuracy
 JV2582;SPC MD       -   180,170.      392,550.      MT  (+/- 180 meters Scaled)
 JV2582
 JV2582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ200510(NAD 83)
 JV2582
 JV2582                          SUPERSEDED SURVEY CONTROL
 JV2582
 JV2582  NGVD 29 (11/26/84)  162.376  (m)          532.73   (f) ADJUSTED    2 0
 JV2582
 JV2582.Superseded values are not recommended for survey control.
 JV2582
 JV2582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2582.See file dsdata.pdf to determine how the superseded data were derived.
 JV2582
 JV2582_MARKER: Q = CHISELED SQUARE
 JV2582_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2582_SP_SET: CULVERT
 JV2582_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2582
 JV2582  HISTORY     - Date     Condition        Report By
 JV2582  HISTORY     - UNK      MONUMENTED       WSSC
 JV2582  HISTORY     - 1946     GOOD             WSSC
 JV2582
 JV2582                          STATION DESCRIPTION
 JV2582
 JV2582'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2582'1.1 MI SW FROM DAISY.
 JV2582'ABOUT 1.1 MILES SOUTHWEST ALONG THE DAISY-ETCHISON ROAD FROM
 JV2582'DAISY,  HOWARD COUNTY, AT A CULVERT, AND ON THE CENTER OF THE
 JV2582'TOP OF THE HEAD WALL.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0667 ***********************************************************************
 JW0667  DESIGNATION -  2447 C
 JW0667  PID         -  JW0667
 JW0667  STATE/COUNTY-  MD/GARRETT
 JW0667  COUNTRY     -  US
 JW0667  USGS QUAD   -  DEER PARK (2016)
 JW0667
 JW0667                         *CURRENT SURVEY CONTROL
 JW0667  ______________________________________________________________________
 JW0667* NAD 83(1986) POSITION- 39 25 11.     (N) 079 19 35.     (W)   SCALED
 JW0667* NAVD 88 ORTHO HEIGHT -   745.864 (meters)     2447.06  (feet) POSTED
 JW0667  ______________________________________________________________________
 JW0667  GEOID HEIGHT    -        -31.210 (meters)                     GEOID18
 JW0667  DYNAMIC HEIGHT  -        745.35  (meters)     2445.4   (feet) COMP
 JW0667  MODELED GRAVITY -    979,911.5   (mgal)                       NAVD 88
 JW0667
 JW0667  VERT ORDER      -  * POSTED, SEE BELOW
 JW0667
 JW0667.The horizontal coordinates were scaled from a map and have
 JW0667.an estimated accuracy of +/- 6 seconds.
 JW0667
 JW0667.The orthometric height was determined by differential leveling
 JW0667.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JW0667
 JW0667.* This is a POSTED BENCH MARK height.
 JW0667
 JW0667.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0667.GEOID18 height accuracy estimate available here.
 JW0667
 JW0667.Click photographs - Photos may exist for this station.
 JW0667
 JW0667.The dynamic height is computed by dividing the NAVD 88
 JW0667.geopotential number by the normal gravity value computed on the
 JW0667.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0667.degrees latitude (g = 980.6199 gals.).
 JW0667
 JW0667.The modeled gravity was interpolated from observed gravity values.
 JW0667
 JW0667;                    North         East    Units  Estimated Accuracy
 JW0667;SPC MD       -   197,160.      199,690.      MT  (+/- 180 meters Scaled)
 JW0667
 JW0667_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD440646(NAD 83)
 JW0667
 JW0667                          SUPERSEDED SURVEY CONTROL
 JW0667
 JW0667  NGVD 29 (??/??/92)  745.976  (m)         2447.42   (f) ADJ UNCH    1 2
 JW0667
 JW0667.Superseded values are not recommended for survey control.
 JW0667
 JW0667.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0667.See file dsdata.pdf to determine how the superseded data were derived.
 JW0667
 JW0667_MARKER: DD = SURVEY DISK
 JW0667_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0667_SP_SET: CULVERT
 JW0667_STAMPING: 2447 C
 JW0667_MARK LOGO: USGS
 JW0667_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0667
 JW0667  HISTORY     - Date     Condition        Report By
 JW0667  HISTORY     - 1898     MONUMENTED       USGS
 JW0667  HISTORY     - 1935     GOOD             CGS
 JW0667  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0667
 JW0667                          STATION DESCRIPTION
 JW0667
 JW0667'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0667'5.7 MI NE FROM OAKLAND.
 JW0667'ABOUT 5.7 MILES NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD
 JW0667'FROM THE CROSSING OF SECOND STREET AT OAKLAND, GARRETT COUNTY,
 JW0667'ABOUT 0.3 MILE SOUTHWEST OF THE STATION AT DEER PARK, 18 FEET
 JW0667'SOUTHEAST OF THE CENTER LINE OF THE SOUTH TRACK, 3 POLES NORTHEAST
 JW0667'OF POLE 226+20, IN THE SOUTHWEST WING WALL OF THE SOUTHEAST
 JW0667'ABUTMENT OF A STONE CULVERT, AND ABOUT 6 FEET LOWER THAN THE
 JW0667'TRACK.  A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED
 JW0667'2447 C AND SET VERTICALLY.
 JW0667
 JW0667                          STATION RECOVERY (1983)
 JW0667
 JW0667'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0667'NOT RECOVERED, A NEW BRIDGE ABUTMENT IS NOW AT THIS LOCATION, CONSIDER
 JW0667'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2585 ***********************************************************************
 JV2585  DESIGNATION -  2447 WSSC
 JV2585  PID         -  JV2585
 JV2585  STATE/COUNTY-  MD/HOWARD
 JV2585  COUNTRY     -  US
 JV2585  USGS QUAD   -  WOODBINE (2016)
 JV2585
 JV2585                         *CURRENT SURVEY CONTROL
 JV2585  ______________________________________________________________________
 JV2585* NAD 83(1986) POSITION- 39 16 46.     (N) 077 05 58.     (W)   SCALED
 JV2585* NAVD 88 ORTHO HEIGHT -   172.66  (+/-2cm)      566.5   (feet) VERTCON3
 JV2585  ______________________________________________________________________
 JV2585  GEOID HEIGHT    -        -31.818 (meters)                     GEOID18
 JV2585  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2585
 JV2585.The horizontal coordinates were scaled from a map and have
 JV2585.an estimated accuracy of +/- 6 seconds.
 JV2585
 JV2585.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2585.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2585
 JV2585.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2585.GEOID18 height accuracy estimate available here.
 JV2585
 JV2585.The vertical order pertains to the NGVD 29 superseded value.
 JV2585
 JV2585.Click photographs - Photos may exist for this station.
 JV2585
 JV2585;                    North         East    Units  Estimated Accuracy
 JV2585;SPC MD       -   179,030.      391,420.      MT  (+/- 180 meters Scaled)
 JV2585
 JV2585_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ189498(NAD 83)
 JV2585
 JV2585                          SUPERSEDED SURVEY CONTROL
 JV2585
 JV2585  NGVD 29 (11/26/84)  172.865  (m)          567.14   (f) ADJUSTED    2 0
 JV2585
 JV2585.Superseded values are not recommended for survey control.
 JV2585
 JV2585.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2585.See file dsdata.pdf to determine how the superseded data were derived.
 JV2585
 JV2585_MARKER: N = NAIL
 JV2585_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2585_SP_SET: TREE
 JV2585_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2585
 JV2585  HISTORY     - Date     Condition        Report By
 JV2585  HISTORY     - UNK      MONUMENTED       WSSC
 JV2585  HISTORY     - 1946     GOOD             WSSC
 JV2585
 JV2585                          STATION DESCRIPTION
 JV2585
 JV2585'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2585'0.3 MI NE FROM HIPSLEYS MILL.
 JV2585'ABOUT 0.3 MILE NORTHEAST ALONG THE DAISY-ETCHISON ROAD ( A
 JV2585'COUNTY ROAD) FROM HIPSLEYS MILL, HOWARD COUNTY, ABOUT 0.7 MILE
 JV2585'SOUTHWEST OF A PROMINENT ANGLE IN THE MACADAM ROAD AT THE
 JV2585'JUNCTION OF THE FLORENCE-ROXBURY MILLS ROAD, ABOUT 500 FEET
 JV2585'SOUTHWEST OF THE FORKS IN THE COUNTY ROAD, AT THE TOP OF A HILL,
 JV2585'AT AN 18-INCH CHERRY TREE SOUTHEAST OF THE ROAD, AND IN THE
 JV2585'WEST ROOT.  A MASONRY NAIL AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2587 ***********************************************************************
 JV2587  DESIGNATION -  2448 WSSC
 JV2587  PID         -  JV2587
 JV2587  STATE/COUNTY-  MD/HOWARD
 JV2587  COUNTRY     -  US
 JV2587  USGS QUAD   -  WOODBINE (2016)
 JV2587
 JV2587                         *CURRENT SURVEY CONTROL
 JV2587  ______________________________________________________________________
 JV2587* NAD 83(1986) POSITION- 39 16 28.     (N) 077 06 31.     (W)   SCALED
 JV2587* NAVD 88 ORTHO HEIGHT -   165.74  (+/-2cm)      543.8   (feet) VERTCON3
 JV2587  ______________________________________________________________________
 JV2587  GEOID HEIGHT    -        -31.813 (meters)                     GEOID18
 JV2587  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2587
 JV2587.The horizontal coordinates were scaled from a map and have
 JV2587.an estimated accuracy of +/- 6 seconds.
 JV2587
 JV2587.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2587.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2587
 JV2587.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2587.GEOID18 height accuracy estimate available here.
 JV2587
 JV2587.The vertical order pertains to the NGVD 29 superseded value.
 JV2587
 JV2587.Click photographs - Photos may exist for this station.
 JV2587
 JV2587;                    North         East    Units  Estimated Accuracy
 JV2587;SPC MD       -   178,480.      390,630.      MT  (+/- 180 meters Scaled)
 JV2587
 JV2587_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ181493(NAD 83)
 JV2587
 JV2587                          SUPERSEDED SURVEY CONTROL
 JV2587
 JV2587  NGVD 29 (11/26/84)  165.939  (m)          544.42   (f) ADJUSTED    2 0
 JV2587
 JV2587.Superseded values are not recommended for survey control.
 JV2587
 JV2587.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2587.See file dsdata.pdf to determine how the superseded data were derived.
 JV2587
 JV2587_MARKER: N = NAIL
 JV2587_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2587_SP_SET: TREE
 JV2587_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2587
 JV2587  HISTORY     - Date     Condition        Report By
 JV2587  HISTORY     - UNK      MONUMENTED       WSSC
 JV2587  HISTORY     - 1946     GOOD             WSSC
 JV2587
 JV2587                          STATION DESCRIPTION
 JV2587
 JV2587'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2587'0.2 MI SW FROM HIPSLEYS MILL.
 JV2587'ABOUT 0.25 MILE SOUTHWEST ALONG THE DAISY-ETCHISON ROAD FROM
 JV2587'HIPSLEYS MILL, HOWARD COUNTY, IN FRONT OF AN UNPAINTED HOUSE
 JV2587'NORTHWEST OF THE ROAD, AT A 30-INCH OAK TREE, AND IN THE SOUTHWEST
 JV2587'ROOT.  A MASONRY NAIL AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2588 ***********************************************************************
 JV2588  DESIGNATION -  2449 WSSC
 JV2588  PID         -  JV2588
 JV2588  STATE/COUNTY-  MD/HOWARD
 JV2588  COUNTRY     -  US
 JV2588  USGS QUAD   -  WOODBINE (2016)
 JV2588
 JV2588                         *CURRENT SURVEY CONTROL
 JV2588  ______________________________________________________________________
 JV2588* NAD 83(1986) POSITION- 39 16 13.     (N) 077 06 46.     (W)   SCALED
 JV2588* NAVD 88 ORTHO HEIGHT -   169.82  (+/-2cm)      557.2   (feet) VERTCON3
 JV2588  ______________________________________________________________________
 JV2588  GEOID HEIGHT    -        -31.810 (meters)                     GEOID18
 JV2588  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2588
 JV2588.The horizontal coordinates were scaled from a map and have
 JV2588.an estimated accuracy of +/- 6 seconds.
 JV2588
 JV2588.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2588.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2588
 JV2588.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2588.GEOID18 height accuracy estimate available here.
 JV2588
 JV2588.The vertical order pertains to the NGVD 29 superseded value.
 JV2588
 JV2588.Click photographs - Photos may exist for this station.
 JV2588
 JV2588;                    North         East    Units  Estimated Accuracy
 JV2588;SPC MD       -   178,020.      390,270.      MT  (+/- 180 meters Scaled)
 JV2588
 JV2588_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ177488(NAD 83)
 JV2588
 JV2588                          SUPERSEDED SURVEY CONTROL
 JV2588
 JV2588  NGVD 29 (11/26/84)  170.019  (m)          557.80   (f) ADJUSTED    2 0
 JV2588
 JV2588.Superseded values are not recommended for survey control.
 JV2588
 JV2588.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2588.See file dsdata.pdf to determine how the superseded data were derived.
 JV2588
 JV2588_MARKER: N = NAIL
 JV2588_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2588_SP_SET: TREE
 JV2588_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2588
 JV2588  HISTORY     - Date     Condition        Report By
 JV2588  HISTORY     - UNK      MONUMENTED       WSSC
 JV2588  HISTORY     - 1946     GOOD             WSSC
 JV2588
 JV2588                          STATION DESCRIPTION
 JV2588
 JV2588'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2588'0.6 MI SW FROM HIPSLEYS MILL.
 JV2588'ABOUT 0.6 MILE SOUTHWEST ALONG THE DAISY-ETCHISON ROAD FROM
 JV2588'HIPSLEYS MILL, HOWARD COUNTY, ABOUT 0.5 MILE NORTHEAST OF PATUXENT
 JV2588'RIVER AT THE HOWARD-MONTGOMERY COUNTY LINE, ON THE TOP OF A HILL,
 JV2588'AT A 16-INCH MAPLE TREE NORTHWEST OF THE ROAD, AND IN THE SOUTH
 JV2588'ROOT.  A MASONRY NAIL AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2590 ***********************************************************************
 JV2590  DESIGNATION -  2450 WSSC
 JV2590  PID         -  JV2590
 JV2590  STATE/COUNTY-  MD/MONTGOMERY
 JV2590  COUNTRY     -  US
 JV2590  USGS QUAD   -  WOODBINE (2016)
 JV2590
 JV2590                         *CURRENT SURVEY CONTROL
 JV2590  ______________________________________________________________________
 JV2590* NAD 83(1986) POSITION- 39 15 27.     (N) 077 07 23.     (W)   SCALED
 JV2590* NAVD 88 ORTHO HEIGHT -   175.88  (+/-2cm)      577.0   (feet) VERTCON3
 JV2590  ______________________________________________________________________
 JV2590  GEOID HEIGHT    -        -31.798 (meters)                     GEOID18
 JV2590  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2590
 JV2590.The horizontal coordinates were scaled from a map and have
 JV2590.an estimated accuracy of +/- 6 seconds.
 JV2590
 JV2590.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2590.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2590
 JV2590.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2590.GEOID18 height accuracy estimate available here.
 JV2590
 JV2590.The vertical order pertains to the NGVD 29 superseded value.
 JV2590
 JV2590.Click photographs - Photos may exist for this station.
 JV2590
 JV2590;                    North         East    Units  Estimated Accuracy
 JV2590;SPC MD       -   176,600.      389,380.      MT  (+/- 180 meters Scaled)
 JV2590
 JV2590_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ168475(NAD 83)
 JV2590
 JV2590                          SUPERSEDED SURVEY CONTROL
 JV2590
 JV2590  NGVD 29 (11/26/84)  176.075  (m)          577.67   (f) ADJUSTED    2 0
 JV2590
 JV2590.Superseded values are not recommended for survey control.
 JV2590
 JV2590.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2590.See file dsdata.pdf to determine how the superseded data were derived.
 JV2590
 JV2590_MARKER: N = NAIL
 JV2590_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2590_SP_SET: TREE
 JV2590_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2590
 JV2590  HISTORY     - Date     Condition        Report By
 JV2590  HISTORY     - UNK      MONUMENTED       WSSC
 JV2590  HISTORY     - 1946     GOOD             WSSC
 JV2590
 JV2590                          STATION DESCRIPTION
 JV2590
 JV2590'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2590'1 MI NE FROM ETCHISON.
 JV2590'ABOUT 1 MILE NORTHEAST ALONG THE DAISY-ETCHISON ROAD FROM THE
 JV2590'INTERSECTION OF THE UNITY-ETCHISON ROAD ABOUT 0.3 MILE SOUTHEAST
 JV2590'OF THE GENERAL STORE AT ETCHISON, MONTGOMERY COUNTY, ABOUT 0.7
 JV2590'MILE SOUTHWEST OF PATUXENT RIVER, NEAR THE TOP OF A HILL, ABOUT
 JV2590'200 FEET WEST OF THE ENTRANCE TO A HOUSE, AT A 36-INCH MAPLE
 JV2590'TREE ON THE SOUTH SIDE OF THE ROAD, AND IN THE NORTH ROOT.  A
 JV2590'MASONRY NAIL AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0688 ***********************************************************************
 JW0688  DESIGNATION -  2467 S MERIDIAN
 JW0688  PID         -  JW0688
 JW0688  STATE/COUNTY-  MD/GARRETT
 JW0688  COUNTRY     -  US
 JW0688  USGS QUAD   -  OAKLAND (2016)
 JW0688
 JW0688                         *CURRENT SURVEY CONTROL
 JW0688  ______________________________________________________________________
 JW0688* NAD 83(1986) POSITION- 39 24 30.12   (N) 079 24 18.03   (W)   HD_HELD1
 JW0688* NAVD 88 ORTHO HEIGHT -   750.009 (meters)     2460.65  (feet) ADJUSTED
 JW0688  ______________________________________________________________________
 JW0688  GEOID HEIGHT    -        -31.143 (meters)                     GEOID18
 JW0688  DYNAMIC HEIGHT  -        749.502 (meters)     2458.99  (feet) COMP
 JW0688  MODELED GRAVITY -    979,924.3   (mgal)                       NAVD 88
 JW0688
 JW0688  VERT ORDER      -  FIRST     CLASS II
 JW0688
 JW0688.The horizontal coordinates were determined by differentially corrected
 JW0688.hand held GPS observations or other comparable positioning techniques
 JW0688.and have an estimated accuracy of +/- 3 meters.
 JW0688
 JW0688.The orthometric height was determined by differential leveling and
 JW0688.adjusted by the NATIONAL GEODETIC SURVEY
 JW0688.in June 1991.
 JW0688
 JW0688.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0688.GEOID18 height accuracy estimate available here.
 JW0688
 JW0688.Click photographs - Photos may exist for this station.
 JW0688
 JW0688.The dynamic height is computed by dividing the NAVD 88
 JW0688.geopotential number by the normal gravity value computed on the
 JW0688.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0688.degrees latitude (g = 980.6199 gals.).
 JW0688
 JW0688.The modeled gravity was interpolated from observed gravity values.
 JW0688
 JW0688;                    North         East    Units  Estimated Accuracy
 JW0688;SPC MD       -   196,069.7     192,891.1     MT  (+/- 3 meters HH1 GPS) 
 JW0688
 JW0688_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3731963308(NAD 83)
 JW0688
 JW0688                          SUPERSEDED SURVEY CONTROL
 JW0688
 JW0688  NGVD 29 (??/??/92)  750.149  (m)         2461.11   (f) ADJ UNCH    1 2
 JW0688
 JW0688.Superseded values are not recommended for survey control.
 JW0688
 JW0688.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0688.See file dsdata.pdf to determine how the superseded data were derived.
 JW0688
 JW0688_MARKER: B = BOLT
 JW0688_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0688_STAMPING: SM 1897
 JW0688_MARK LOGO: CGS
 JW0688_PROJECTION: PROJECTING 22 CENTIMETERS
 JW0688_MAGNETIC: I = MARKER IS A STEEL ROD
 JW0688_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0688+STABILITY: SURFACE MOTION
 JW0688_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW0688+SATELLITE: SATELLITE OBSERVATIONS - March 17, 2013
 JW0688
 JW0688  HISTORY     - Date     Condition        Report By
 JW0688  HISTORY     - 1897     MONUMENTED       USGS
 JW0688  HISTORY     - 1935     GOOD             CGS
 JW0688  HISTORY     - 1983     GOOD             NGS
 JW0688  HISTORY     - 19910827 GOOD             MDSHA
 JW0688  HISTORY     - 20010802 GOOD             MDSHA
 JW0688  HISTORY     - 20071116 GOOD             PB
 JW0688  HISTORY     - 20090725 GOOD             GEOCAC
 JW0688  HISTORY     - 20130317 GOOD             GEOCAC
 JW0688
 JW0688                          STATION DESCRIPTION
 JW0688
 JW0688'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0688'AT OAKLAND.
 JW0688'AT OAKLAND, GARRETT COUNTY, AT THE GARRETT COUNTY HIGH SCHOOL, 48
 JW0688'FEET WEST OF THE MAIN ENTRANCE, AT THE FOOT OF THE TERRACES, AT
 JW0688'THE SECOND TERRACE ABOVE THE SIDEWALK, NORTHWEST OF THE BANK OF
 JW0688'THE THIRD TERRACE, 28 FEET SOUTHWEST OF THE SCHOOL SIDEWALK, AND
 JW0688'8 INCHES UNDER GROUND.  A COPPER BOLT, STAMPED 2467 1897 AND SET
 JW0688'IN THE TOP OF A CONCRETE POST.
 JW0688
 JW0688                          STATION RECOVERY (1983)
 JW0688
 JW0688'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0688'RECOVERED IN GOOD CONDITION, NEW DESCRIPTION FOLLOWS.  IN OAKLAND, AT
 JW0688'THE GARRETT COUNTY BOARD OF EDUCATION BUILDING, AT THE JUNCTION OF
 JW0688'FOURTH AND GREEN STREETS, ABOUT CENTERED IN THE SECOND TERRACE OF THE
 JW0688'FRONT LAWN ON THE SOUTHWEST SIDE OF THE MAIN ENTRANCE OF THE BUILDING,
 JW0688'16.80 METERS (55.0 FT) NORTHEAST OF THE CENTER OF GREEN STREET,
 JW0688'7.92 METERS (26.0 FT) SOUTHWEST OF THE SOUTHWEST EDGE OF THE SIDEWALK
 JW0688'TO THE MAIN ENTRANCE OF THE BUILDING, 12.19 METERS (40.0 FT) NORTHWEST
 JW0688'OF THE WEST CORNER OF THE BUILDING, 5.50 METERS (18.0 FT) NORTHEAST OF
 JW0688'THE NORTH CORNER OF THE CONCRETE BASE OF A FLAGPOLE.
 JW0688'THE MARK IS 0.27 M BELOW SIDEWALK.
 JW0688
 JW0688                          STATION RECOVERY (1991)
 JW0688
 JW0688'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW0688'RECOVERED IN GOOD CONDITION.
 JW0688
 JW0688                          STATION RECOVERY (2001)
 JW0688
 JW0688'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JW0688'RECOVERED AS DESCRIBED.
 JW0688
 JW0688                          STATION RECOVERY (2007)
 JW0688
 JW0688'RECOVERY NOTE BY PBS&J 2007
 JW0688'RECOVERED IN GOOD CONDITION.
 JW0688
 JW0688                          STATION RECOVERY (2009)
 JW0688
 JW0688'RECOVERY NOTE BY GEOCACHING 2009 (BP)
 JW0688'THIS BENCHMARK IS A COPPER BOLT, NOT A DISK. THE BOLT IS SURROUNDED BY
 JW0688'A CEMENT POST WHICH IS INSCRIBED WITH AN S ABOVE THE BOLT, 18 ON THE
 JW0688'LEFT, 97 ON THE RIGHT, AND AN M BELOW THE BOLT. THE SCHOOL BUILDING IS
 JW0688'GONE AND THE LOCATION IS NOW A VACANT LOT.  THE FLAGPOLE IS GONE BUT
 JW0688'THE BASE REMAINS.
 JW0688
 JW0688                          STATION RECOVERY (2013)
 JW0688
 JW0688'RECOVERY NOTE BY GEOCACHING 2013 (MFM)
 JW0688'STATION IS NE OF NE FLAGPOLE BASE. STATION IS COPPER PLUG (NOT BOLT)
 JW0688'WITH A CROSS PATTERN STAMPED INTO TOP OF PLUG. PLUG IS SET INTO
 JW0688'CONCRETE BASE 1 FOOT BELOW LEVEL OF GROUND, CONTAINED WITHIN 4
 JW0688'CONCRETE TILES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8510 ***********************************************************************
 AI8510  DESIGNATION -  24AA
 AI8510  PID         -  AI8510
 AI8510  STATE/COUNTY-  MD/HOWARD
 AI8510  COUNTRY     -  US
 AI8510  USGS QUAD   -  ELLICOTT CITY (2016)
 AI8510
 AI8510                         *CURRENT SURVEY CONTROL
 AI8510  ______________________________________________________________________
 AI8510* NAD 83(2011) POSITION- 39 16 45.86869(N) 076 51 27.87099(W)   ADJUSTED
 AI8510* NAD 83(2011) ELLIP HT-    85.688 (meters)        (06/27/12)   ADJUSTED
 AI8510* NAD 83(2011) EPOCH   -  2010.00
 AI8510* NAVD 88 ORTHO HEIGHT -   117.8   (meters)      386.    (feet) GPS OBS
 AI8510  ______________________________________________________________________
 AI8510  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8510  GEOID HEIGHT    -        -32.112 (meters)                     GEOID99
 AI8510  GEOID HEIGHT    -        -32.128 (meters)                     GEOID18
 AI8510  NAD 83(2011) X  -  1,124,072.949 (meters)                     COMP
 AI8510  NAD 83(2011) Y  - -4,814,328.137 (meters)                     COMP
 AI8510  NAD 83(2011) Z  -  4,016,430.145 (meters)                     COMP
 AI8510  LAPLACE CORR    -         -3.22  (seconds)                    DEFLEC18
 AI8510
 AI8510  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8510  Standards:
 AI8510         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8510            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8510  -------------------------------------------------------------------
 AI8510  NETWORK    0.82   1.04           0.37   0.29   0.53     -0.04539208
 AI8510  -------------------------------------------------------------------
 AI8510  Click here for local accuracies and other accuracy information.
 AI8510
 AI8510.The horizontal coordinates were established by GPS observations
 AI8510.and adjusted by the National Geodetic Survey in June 2012.
 AI8510
 AI8510.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8510.been affixed to the stable North American tectonic plate. See 
 AI8510.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8510
 AI8510.The horizontal coordinates are valid at the epoch date displayed above
 AI8510.which is a decimal equivalence of Year/Month/Day.
 AI8510
 AI8510.The orthometric height was determined by GPS observations and a
 AI8510.high-resolution geoid model.
 AI8510
 AI8510.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8510.GEOID18 height accuracy estimate available here.
 AI8510
 AI8510.Click photographs - Photos may exist for this station.
 AI8510
 AI8510.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8510
 AI8510.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8510
 AI8510.The ellipsoidal height was determined by GPS observations
 AI8510.and is referenced to NAD 83.
 AI8510
 AI8510. The following values were computed from the NAD 83(2011) position.
 AI8510
 AI8510;                    North         East     Units Scale Factor Converg.
 AI8510;SPC MD       -   179,033.931   412,274.373   MT  0.99997461   +0 05 21.4
 AI8510;SPC MD       -   587,380.49  1,352,603.51   sFT  0.99997461   +0 05 21.4
 AI8510;UTM  18      - 4,349,428.477   339,763.831   MT  0.99991614   -1 10 35.0
 AI8510
 AI8510!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8510!SPC MD       -   0.99998656  x   0.99997461  =   0.99996117
 AI8510!UTM  18      -   0.99998656  x   0.99991614  =   0.99990270
 AI8510
 AI8510_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3976349428(NAD 83)
 AI8510
 AI8510                          SUPERSEDED SURVEY CONTROL
 AI8510
 AI8510  NAD 83(2007)-  39 16 45.86886(N)    076 51 27.87180(W) AD(2002.00) 0
 AI8510  ELLIP H (02/10/07)   85.715  (m)                       GP(2002.00)    
 AI8510  ELLIP H (08/30/02)   85.717  (m)                       GP(       ) 4 2
 AI8510  NAD 83(1991)-  39 16 45.86835(N)    076 51 27.87160(W) AD(       ) 1
 AI8510  ELLIP H (11/16/00)   85.650  (m)                       GP(       ) 4 1
 AI8510
 AI8510.Superseded values are not recommended for survey control.
 AI8510
 AI8510.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8510.See file dsdata.pdf to determine how the superseded data were derived.
 AI8510
 AI8510_MARKER: DD = SURVEY DISK
 AI8510_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8510_STAMPING: 6/92 24AA
 AI8510_MARK LOGO: MD-027
 AI8510_PROJECTION: FLUSH
 AI8510_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8510_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8510+STABILITY: SURFACE MOTION
 AI8510_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8510+SATELLITE: SATELLITE OBSERVATIONS - October 15, 2021
 AI8510
 AI8510  HISTORY     - Date     Condition        Report By
 AI8510  HISTORY     - 1992     MONUMENTED       MD-027
 AI8510  HISTORY     - 20000915 GOOD             MD-027
 AI8510  HISTORY     - 20030601 GOOD             URS
 AI8510  HISTORY     - 20211015 GOOD             BASE9
 AI8510
 AI8510                          STATION DESCRIPTION
 AI8510
 AI8510'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8510'DESCRIBED BY HOWARD COUNTY 2000 THE STATION IS AT ELLICOTT CITY ON
 AI8510'THE NORTH SIDE OF STATE HIGHWAY  40 IN FRONT OF THE PARKING LOT
 AI8510'OF   ENCHANTED FOREST SHOPPING MALL. TO REACH THE STATION FROM
 AI8510'THE   INTERSECTION OF STATE HIGHWAY 29  AND  STATE HIGHWAY 40, GO 20
 AI8510'MILES WEST ALONG ROUTE 40 TO THE MALL   AND THE STATION ON THE
 AI8510'RIGHT.   THE STATION IS ABOUT 500 FEET EAST OF THE INTERSECCION OF
 AI8510'ROUTE 40  AND BETHANY LANE,  IT IS 2.5 FEET TO THE NORTH FACE OF CURB
 AI8510'OF ROUTE  40,  AT THE  FOOT OF A SLOPE SEPARATING ROUTE 40 AND THE
 AI8510'SHOPPING  CENTER., 26.9 FEET TO THE NEAREST CORNER OF A BRICK
 AI8510'WATER VAULT  AND 36.2 FEET TO A FIRE HYDRANT.   THE MARK IS A
 AI8510'STANDARD HOWARD COUNTY SURVEY DISC SET ON  CONCRETE BASE,
 AI8510'FLUSH WITH THE GROUND.
 AI8510'
 AI8510
 AI8510                          STATION RECOVERY (2003)
 AI8510
 AI8510'RECOVERY NOTE BY URS COMPANY 2003 (JP)
 AI8510'RECOVERED IN GOOD CONDITION.
 AI8510
 AI8510                          STATION RECOVERY (2021)
 AI8510
 AI8510'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2021 (DRD)
 AI8510'DIRECTION FROM THE FIRE HYDRANT NOTED IN THE ORIGINAL 1992 DESCRIPTION
 AI8510'IS SOUTHEAST.  NO EVIDENCE OF THE WATER VAULT COULD BE FOUND.  MARK IS
 AI8510'STILL FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8498 ***********************************************************************
 AI8498  DESIGNATION -  24IA
 AI8498  PID         -  AI8498
 AI8498  STATE/COUNTY-  MD/HOWARD
 AI8498  COUNTRY     -  US
 AI8498  USGS QUAD   -  ELLICOTT CITY (2016)
 AI8498
 AI8498                         *CURRENT SURVEY CONTROL
 AI8498  ______________________________________________________________________
 AI8498* NAD 83(2011) POSITION- 39 15 24.55921(N) 076 49 50.69150(W)   ADJUSTED
 AI8498* NAD 83(2011) ELLIP HT-    76.674 (meters)        (06/27/12)   ADJUSTED
 AI8498* NAD 83(2011) EPOCH   -  2010.00
 AI8498* NAVD 88 ORTHO HEIGHT -   108.9   (meters)      357.    (feet) GPS OBS
 AI8498  ______________________________________________________________________
 AI8498  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8498  GEOID HEIGHT    -        -32.173 (meters)                     GEOID99
 AI8498  GEOID HEIGHT    -        -32.189 (meters)                     GEOID18
 AI8498  NAD 83(2011) X  -  1,126,701.052 (meters)                     COMP
 AI8498  NAD 83(2011) Y  - -4,815,336.620 (meters)                     COMP
 AI8498  NAD 83(2011) Z  -  4,014,483.121 (meters)                     COMP
 AI8498  LAPLACE CORR    -         -3.11  (seconds)                    DEFLEC18
 AI8498
 AI8498  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8498  Standards:
 AI8498         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8498            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8498  -------------------------------------------------------------------
 AI8498  NETWORK    0.80   1.02           0.36   0.29   0.52     -0.03841115
 AI8498  -------------------------------------------------------------------
 AI8498  Click here for local accuracies and other accuracy information.
 AI8498
 AI8498.The horizontal coordinates were established by GPS observations
 AI8498.and adjusted by the National Geodetic Survey in June 2012.
 AI8498
 AI8498.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8498.been affixed to the stable North American tectonic plate. See 
 AI8498.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8498
 AI8498.The horizontal coordinates are valid at the epoch date displayed above
 AI8498.which is a decimal equivalence of Year/Month/Day.
 AI8498
 AI8498.The orthometric height was determined by GPS observations and a
 AI8498.high-resolution geoid model.
 AI8498
 AI8498.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8498.GEOID18 height accuracy estimate available here.
 AI8498
 AI8498.Click photographs - Photos may exist for this station.
 AI8498
 AI8498.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8498
 AI8498.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8498
 AI8498.The ellipsoidal height was determined by GPS observations
 AI8498.and is referenced to NAD 83.
 AI8498
 AI8498. The following values were computed from the NAD 83(2011) position.
 AI8498
 AI8498;                    North         East     Units Scale Factor Converg.
 AI8498;SPC MD       -   176,530.468   414,608.154   MT  0.99997191   +0 06 22.4
 AI8498;SPC MD       -   579,167.04  1,360,260.25   sFT  0.99997191   +0 06 22.4
 AI8498;UTM  18      - 4,346,874.248   342,041.621   MT  0.99990722   -1 09 31.4
 AI8498
 AI8498!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8498!SPC MD       -   0.99998797  x   0.99997191  =   0.99995988
 AI8498!UTM  18      -   0.99998797  x   0.99990722  =   0.99989519
 AI8498
 AI8498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4204146874(NAD 83)
 AI8498
 AI8498                          SUPERSEDED SURVEY CONTROL
 AI8498
 AI8498  NAD 83(2007)-  39 15 24.55943(N)    076 49 50.69236(W) AD(2002.00) 0
 AI8498  ELLIP H (02/10/07)   76.698  (m)                       GP(2002.00)    
 AI8498  ELLIP H (08/30/02)   76.699  (m)                       GP(       ) 4 2
 AI8498  NAD 83(1991)-  39 15 24.55894(N)    076 49 50.69213(W) AD(       ) 1
 AI8498  ELLIP H (11/16/00)   76.635  (m)                       GP(       ) 4 1
 AI8498
 AI8498.Superseded values are not recommended for survey control.
 AI8498
 AI8498.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8498.See file dsdata.pdf to determine how the superseded data were derived.
 AI8498
 AI8498_MARKER: DD = SURVEY DISK
 AI8498_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8498_STAMPING: 24IA
 AI8498_MARK LOGO: MD-027
 AI8498_PROJECTION: FLUSH
 AI8498_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 AI8498_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8498+STABILITY: SURFACE MOTION
 AI8498_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8498+SATELLITE: SATELLITE OBSERVATIONS - October 15, 2021
 AI8498
 AI8498  HISTORY     - Date     Condition        Report By
 AI8498  HISTORY     - 1994     MONUMENTED       MD-027
 AI8498  HISTORY     - 20000915 GOOD             MD-027
 AI8498  HISTORY     - 20030922 GOOD             USPSQD
 AI8498  HISTORY     - 20100928 GOOD             GPSSS
 AI8498  HISTORY     - 20211015 GOOD             BASE9
 AI8498
 AI8498                          STATION DESCRIPTION
 AI8498
 AI8498'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8498'DESCRIPTION HOWARD COUNTY 2000    THE STATION IS IN ELLICOTT CITY AT
 AI8498'THE NORTH EDGE OF DUNLOGGIN   MIDDLE SCHOOL PARKING LOT WHERE
 AI8498'IT  ABUTS WITH DUNLOGGING PARK.   TO REACH THE STATION FROM
 AI8498'ROUTE     103 (MONTGOMERY ROAD)  OVERPASS ABOVE   STATE HIGHWAY 29
 AI8498'GO     WEST FOR ONE BLOCK TO A TEE  AT ST.JOHNS LANE, TURN LEFT
 AI8498'(SOUT) ONE     BLOCK ON  ST. JOHNS LANE TO A  NEW TEE, TURN  RIGHT
 AI8498'(WEST) ON     NORTH  FIELD ROAD ANG GO 0.3 MILES  TO THE PARKING LOT
 AI8498'OF DUNLOGGIN    MIDDLE  SCHOOL AND THE STATION ON THE RIGHT.   THE
 AI8498'STATION IS 7  FEET   NORTH  OF THE NORTH EDGE OF AN EIGHT FEET
 AI8498'CONCRETE WALK,  50.8   FEET  NORTHWEST OF A STOP SIGN ON A PARKING
 AI8498'LOT ISLAND, 55.8  FEET   WEST  OF ANOTHER STOP SIGN ON THE NORTH
 AI8498'SIDE  OF NORTH  FIELD ROAD   AND  66.7 FEET EAST OF A SWEETGUM TREE.
 AI8498'THE STATION IS  A STANDARD    HOWARD COUNTY  SURVEY  DISC SET ON A
 AI8498'CONCRETE BASE  , FLUSH WITH    THE GROUNFD.
 AI8498'
 AI8498
 AI8498                          STATION RECOVERY (2003)
 AI8498
 AI8498'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 AI8498'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 55.8 FEET WEST OF A
 AI8498'STOP SIGN AND --BUS LOADING ZONE-- SIGN ON THE NORTH SIDE OF
 AI8498'NORTHFIELD ROAD, 24.0 FEET WEST OF THE EAST END OF A CONCRETE
 AI8498'SIDEWALK, AND 7.1 FEET NORTH OF THE NORTHERN EDGE OF THE SIDEWALK.
 AI8498
 AI8498                          STATION RECOVERY (2010)
 AI8498
 AI8498'RECOVERY NOTE BY GPS SALES AND SERVICES 2010 (DP)
 AI8498'RECOVERED BY DEWEY LILLY OF NORTHERN BAY SURVEYS
 AI8498
 AI8498                          STATION RECOVERY (2021)
 AI8498
 AI8498'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2021 (DRD)
 AI8498'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6580 ***********************************************************************
 DL6580  DESIGNATION -  24IB
 DL6580  PID         -  DL6580
 DL6580  STATE/COUNTY-  MD/HOWARD
 DL6580  COUNTRY     -  US
 DL6580  USGS QUAD   -  ELLICOTT CITY (2016)
 DL6580
 DL6580                         *CURRENT SURVEY CONTROL
 DL6580  ______________________________________________________________________
 DL6580* NAD 83(1986) POSITION- 39 15 20.43   (N) 076 49 24.73   (W)   HD_HELD1
 DL6580* NAVD 88 ORTHO HEIGHT -   119.045 (meters)      390.57  (feet) ADJUSTED
 DL6580  ______________________________________________________________________
 DL6580  GEOID HEIGHT    -        -32.201 (meters)                     GEOID18
 DL6580  DYNAMIC HEIGHT  -        118.982 (meters)      390.36  (feet) COMP
 DL6580  MODELED GRAVITY -    980,091.8   (mgal)                       NAVD 88
 DL6580
 DL6580  VERT ORDER      -  SECOND    CLASS I
 DL6580
 DL6580.The horizontal coordinates were determined by differentially corrected
 DL6580.hand held GPS observations or other comparable positioning techniques
 DL6580.and have an estimated accuracy of +/- 3 meters.
 DL6580
 DL6580.The orthometric height was determined by differential leveling and
 DL6580.adjusted by the NATIONAL GEODETIC SURVEY
 DL6580.in March 2010.
 DL6580
 DL6580.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6580.GEOID18 height accuracy estimate available here.
 DL6580
 DL6580.Click photographs - Photos may exist for this station.
 DL6580
 DL6580.The dynamic height is computed by dividing the NAVD 88
 DL6580.geopotential number by the normal gravity value computed on the
 DL6580.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6580.degrees latitude (g = 980.6199 gals.).
 DL6580
 DL6580.The modeled gravity was interpolated from observed gravity values.
 DL6580
 DL6580;                    North         East    Units  Estimated Accuracy
 DL6580;SPC MD       -   176,404.3     415,230.8     MT  (+/- 3 meters HH1 GPS) 
 DL6580
 DL6580_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4266146734(NAD 83)
 DL6580
 DL6580                          SUPERSEDED SURVEY CONTROL
 DL6580
 DL6580.No superseded survey control is available for this station.
 DL6580
 DL6580_MARKER: DD = SURVEY DISK
 DL6580_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6580_STAMPING: 07 94 24IB
 DL6580_MARK LOGO: MD-027
 DL6580_PROJECTION: RECESSED 2 CENTIMETERS
 DL6580_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6580_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6580+STABILITY: SURFACE MOTION
 DL6580_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6580+SATELLITE: SATELLITE OBSERVATIONS - May 24, 2007
 DL6580
 DL6580  HISTORY     - Date     Condition        Report By
 DL6580  HISTORY     - 199407   MONUMENTED       MD-027
 DL6580  HISTORY     - 20070524 GOOD             MDSHA
 DL6580
 DL6580                          STATION DESCRIPTION
 DL6580
 DL6580'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6580'THE STATION IS LOCATED ABOUT 2.7 MI (4.3 KM) SOUTHEAST OF PINE
 DL6580'ORCHARD, 2.4 MI (3.9 KM) NORTH-NORTHWEST OF JONESTOWN AND 1.4 MI (2.3
 DL6580'KM) SOUTHWEST OF ELLICOTT CITY.
 DL6580'
 DL6580'TO REACH FROM THE ELLICOTT CITY ARMORY, GO NORTHWEST ON STATE HIGHWAY
 DL6580'103 FOR 0.3 MI (0.5 KM) TO A T-INTERSECTION.  TURN LEFT AND SOUTH ON
 DL6580'COLUMBIA ROAD FOR 0.1 MI (0.2 KM) TO A T-INTERSECTION.  TURN LEFT AND
 DL6580'GO SOUTHEAST ON NORTHFIELD ROAD FOR 0.1 MI (0.2 KM) TO THE SEVENTH DAY
 DL6580'ADVENTIST CHURCH AND THE STATION ON THE LEFT.
 DL6580'
 DL6580'IT IS 28.3 FT (8.6 M) NORTHEAST OF THE NORTHEAST EDGE OF THE ROAD,
 DL6580'77.6 FT (23.7 M) NORTH AND ACROSS THE ROAD FROM A FIRE HYDRANT, 74.8
 DL6580'FT (22.8 M) SOUTHWEST OF THE SOUTHWEST CORNER OF THE CHURCH AND SET IN
 DL6580'THE TOP OF A 10 INCH (25 CM) ROUND CONCRETE POST ABOUT 5 FT (1.5 M)
 DL6580'HIGHER THAN THE ROAD SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0180 ***********************************************************************
 JV0180  DESIGNATION -  25
 JV0180  PID         -  JV0180
 JV0180  STATE/COUNTY-  MD/CECIL
 JV0180  COUNTRY     -  US
 JV0180  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0180
 JV0180                         *CURRENT SURVEY CONTROL
 JV0180  ______________________________________________________________________
 JV0180* NAD 83(1986) POSITION- 39 34 24.66   (N) 076 04 25.38   (W)   HD_HELD1
 JV0180* NAVD 88 ORTHO HEIGHT -    29.569 (meters)       97.01  (feet) ADJUSTED
 JV0180  ______________________________________________________________________
 JV0180  GEOID HEIGHT    -        -33.121 (meters)                     GEOID18
 JV0180  DYNAMIC HEIGHT  -         29.554 (meters)       96.96  (feet) COMP
 JV0180  MODELED GRAVITY -    980,126.3   (mgal)                       NAVD 88
 JV0180
 JV0180  VERT ORDER      -  FIRST     CLASS II
 JV0180
 JV0180.The horizontal coordinates were determined by differentially corrected
 JV0180.hand held GPS observations or other comparable positioning techniques
 JV0180.and have an estimated accuracy of +/- 3 meters.
 JV0180
 JV0180.The orthometric height was determined by differential leveling and
 JV0180.adjusted by the NATIONAL GEODETIC SURVEY
 JV0180.in June 1991.
 JV0180
 JV0180.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0180.GEOID18 height accuracy estimate available here.
 JV0180
 JV0180.Click photographs - Photos may exist for this station.
 JV0180
 JV0180.The dynamic height is computed by dividing the NAVD 88
 JV0180.geopotential number by the normal gravity value computed on the
 JV0180.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0180.degrees latitude (g = 980.6199 gals.).
 JV0180
 JV0180.The modeled gravity was interpolated from observed gravity values.
 JV0180
 JV0180;                    North         East    Units  Estimated Accuracy
 JV0180;SPC MD       -   212,081.1     479,589.3     MT  (+/- 3 meters HH1 GPS) 
 JV0180
 JV0180_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0777980974(NAD 83)
 JV0180
 JV0180                          SUPERSEDED SURVEY CONTROL
 JV0180
 JV0180  NGVD 29 (11/26/84)   29.805  (m)           97.79   (f) ADJUSTED    1 2
 JV0180
 JV0180.Superseded values are not recommended for survey control.
 JV0180
 JV0180.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0180.See file dsdata.pdf to determine how the superseded data were derived.
 JV0180
 JV0180_MARKER: R = RIVET
 JV0180_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV0180+WITH SETTING: PAVEMENT
 JV0180_SP_SET: ABANDONED SIGNAL BASE
 JV0180_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0180+STABILITY: SURFACE MOTION
 JV0180_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0180+SATELLITE: SATELLITE OBSERVATIONS - May 30, 2014
 JV0180
 JV0180  HISTORY     - Date     Condition        Report By
 JV0180  HISTORY     - UNK      MONUMENTED       BORR
 JV0180  HISTORY     - 1971     GOOD             NGS
 JV0180  HISTORY     - 19901113 GOOD             USPSQD
 JV0180  HISTORY     - 20140530 GOOD             JARICE
 JV0180
 JV0180                          STATION DESCRIPTION
 JV0180
 JV0180'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0180'0.4 MI FROM AIKIN.
 JV0180'ABOUT 0.35 MILE WEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV0180'THE RAILROAD UNDERPASS FOR U.S. HIGHWAY 222 AT AIKIN, ABOUT 0.3
 JV0180'MILE EAST OF THE EAST END OF THE RAILROAD BRIDGE OVER THE
 JV0180'SUSQUEHANNA RIVER, SET IN THE TOP OF THE SOUTH EDGE OF THE
 JV0180'CONCRETE FOUNDATION FOR AN ABANDONED SIGNAL LIGHT, 17 FEET NORTH
 JV0180'OF THE NORTH RAIL OF THE NORTH TRACK, 7.6 FEET WEST OF THE
 JV0180'NORTHWEST CORNER OF A 6- X 9-FOOT METAL BUILDING (BUILDING NUMBER
 JV0180'124614), 3.6 FEET NORTH OF THE NORTHEAST CORNER OF A 4- X 4-FOOT
 JV0180'CONCRETE TELEPHONE BOOTH, 34 FEET SOUTH OF THE CENTER LINE OF A
 JV0180'PAVED STREET, 5 1/2 FEET SOUTHWEST OF A TELEPHONE POLE, AND ABOUT
 JV0180'LEVEL WITH THE TRACK.
 JV0180
 JV0180                          STATION RECOVERY (1990)
 JV0180
 JV0180'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0180'RECOVERED IN GOOD CONDITION.
 JV0180
 JV0180                          STATION RECOVERY (2014)
 JV0180
 JV0180'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JV0180'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7851 ***********************************************************************
 HV7851  DESIGNATION -  25
 HV7851  PID         -  HV7851
 HV7851  STATE/COUNTY-  MD/MONTGOMERY
 HV7851  COUNTRY     -  US
 HV7851  USGS QUAD   -  WASHINGTON WEST (2016)
 HV7851
 HV7851                         *CURRENT SURVEY CONTROL
 HV7851  ______________________________________________________________________
 HV7851* NAD 83(1986) POSITION- 38 59 48.26   (N) 077 05 47.89   (W)   HD_HELD1
 HV7851* NAVD 88 ORTHO HEIGHT -    96.421 (meters)      316.34  (feet) ADJUSTED
 HV7851  ______________________________________________________________________
 HV7851  GEOID HEIGHT    -        -31.865 (meters)                     GEOID18
 HV7851  DYNAMIC HEIGHT  -         96.369 (meters)      316.17  (feet) COMP
 HV7851  MODELED GRAVITY -    980,089.6   (mgal)                       NAVD 88
 HV7851
 HV7851  VERT ORDER      -  FIRST     CLASS II
 HV7851
 HV7851.The horizontal coordinates were determined by differentially corrected
 HV7851.hand held GPS observations or other comparable positioning techniques
 HV7851.and have an estimated accuracy of +/- 3 meters.
 HV7851
 HV7851.The orthometric height was determined by differential leveling and
 HV7851.adjusted by the NATIONAL GEODETIC SURVEY
 HV7851.in June 1991.
 HV7851
 HV7851.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7851.GEOID18 height accuracy estimate available here.
 HV7851
 HV7851.Click photographs - Photos may exist for this station.
 HV7851
 HV7851.The dynamic height is computed by dividing the NAVD 88
 HV7851.geopotential number by the normal gravity value computed on the
 HV7851.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7851.degrees latitude (g = 980.6199 gals.).
 HV7851
 HV7851.The modeled gravity was interpolated from observed gravity values.
 HV7851
 HV7851;                    North         East    Units  Estimated Accuracy
 HV7851;SPC MD       -   147,648.6     391,628.8     MT  (+/- 3 meters HH1 GPS) 
 HV7851
 HV7851_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1843118505(NAD 83)
 HV7851
 HV7851                          SUPERSEDED SURVEY CONTROL
 HV7851
 HV7851.No superseded survey control is available for this station.
 HV7851
 HV7851_MARKER: DD = SURVEY DISK
 HV7851_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV7851_SP_SET: SIDEWALK
 HV7851_STAMPING: 25
 HV7851_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7851
 HV7851  HISTORY     - Date     Condition        Report By
 HV7851  HISTORY     - UNK      MONUMENTED       WMATA
 HV7851  HISTORY     - 1979     GOOD             NGS
 HV7851  HISTORY     - 20000617 GOOD             USPSQD
 HV7851
 HV7851                          STATION DESCRIPTION
 HV7851
 HV7851'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 HV7851'IN CHEVY CHASE.
 HV7851'IN CHEVY CHASE AT THE INTERSECTION OF ROCKVILLE PIKE AND JONES
 HV7851'BRIDGE ROAD, SET IN TOP OF THE NORTH END OF CONCRETE MEDIAN IN THE
 HV7851'CENTER OF ROCKVILLE PIKE, 2 FEET SOUTH OF THE NORTH END OF THE
 HV7851'MEDIAN, 16 FEET NORTH OF A METAL POLE SUPPORTING A LEFT TURN TRAFFIC
 HV7851'SIGNAL FOR NORTHEAST BOUND TRAFFIC ONTO JONES BRIDGE ROAD.
 HV7851'THE MARK IS 1 FT ABOVE HIGHWAY.
 HV7851
 HV7851                          STATION RECOVERY (2000)
 HV7851
 HV7851'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV7851'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7027 ***********************************************************************
 JV7027  DESIGNATION -  25 39 001
 JV7027  PID         -  JV7027
 JV7027  STATE/COUNTY-  MD/HOWARD
 JV7027  COUNTRY     -  US
 JV7027  USGS QUAD   -  CLARKSVILLE (2016)
 JV7027
 JV7027                         *CURRENT SURVEY CONTROL
 JV7027  ______________________________________________________________________
 JV7027* NAD 83(2011) POSITION- 39 12 07.99214(N) 076 53 09.03353(W)   ADJUSTED
 JV7027* NAD 83(2011) ELLIP HT-    92.919 (meters)        (06/27/12)   ADJUSTED
 JV7027* NAD 83(2011) EPOCH   -  2010.00
 JV7027* NAVD 88 ORTHO HEIGHT -   125.1   (meters)      410.    (feet) GPS OBS
 JV7027  ______________________________________________________________________
 JV7027  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7027  GEOID HEIGHT    -        -32.111 (meters)                     GEOID99
 JV7027  GEOID HEIGHT    -        -32.132 (meters)                     GEOID18
 JV7027  NAD 83(2011) X  -  1,122,942.862 (meters)                     COMP
 JV7027  NAD 83(2011) Y  - -4,820,163.859 (meters)                     COMP
 JV7027  NAD 83(2011) Z  -  4,009,797.669 (meters)                     COMP
 JV7027  LAPLACE CORR    -         -3.54  (seconds)                    DEFLEC18
 JV7027
 JV7027  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7027  Standards:
 JV7027         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7027            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7027  -------------------------------------------------------------------
 JV7027  NETWORK    1.32   1.45           0.56   0.52   0.74     -0.11838712
 JV7027  -------------------------------------------------------------------
 JV7027  Click here for local accuracies and other accuracy information.
 JV7027
 JV7027.The horizontal coordinates were established by GPS observations
 JV7027.and adjusted by the National Geodetic Survey in June 2012.
 JV7027
 JV7027.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7027.been affixed to the stable North American tectonic plate. See 
 JV7027.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7027
 JV7027.The horizontal coordinates are valid at the epoch date displayed above
 JV7027.which is a decimal equivalence of Year/Month/Day.
 JV7027
 JV7027.The orthometric height was determined by GPS observations and a
 JV7027.high-resolution geoid model.
 JV7027
 JV7027.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7027.GEOID18 height accuracy estimate available here.
 JV7027
 JV7027.Click photographs - Photos may exist for this station.
 JV7027
 JV7027.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7027
 JV7027.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7027
 JV7027.The ellipsoidal height was determined by GPS observations
 JV7027.and is referenced to NAD 83.
 JV7027
 JV7027. The following values were computed from the NAD 83(2011) position.
 JV7027
 JV7027;                    North         East     Units Scale Factor Converg.
 JV7027;SPC MD       -   170,461.377   409,860.493   MT  0.99996604   +0 04 17.9
 JV7027;SPC MD       -   559,255.37  1,344,683.97   sFT  0.99996604   +0 04 17.9
 JV7027;UTM  18      - 4,340,911.710   337,161.446   MT  0.99992650   -1 11 32.0
 JV7027
 JV7027!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7027!SPC MD       -   0.99998542  x   0.99996604  =   0.99995146
 JV7027!UTM  18      -   0.99998542  x   0.99992650  =   0.99991192
 JV7027
 JV7027_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3716140911(NAD 83)
 JV7027
 JV7027                          SUPERSEDED SURVEY CONTROL
 JV7027
 JV7027  NAD 83(2007)-  39 12 07.99206(N)    076 53 09.03426(W) AD(2002.00) 0
 JV7027  ELLIP H (02/10/07)   92.946  (m)                       GP(2002.00)    
 JV7027  ELLIP H (08/30/02)   92.939  (m)                       GP(       ) 4 2
 JV7027  NAD 83(1991)-  39 12 07.99195(N)    076 53 09.03372(W) AD(       ) 1
 JV7027  ELLIP H (02/23/93)   92.858  (m)                       GP(       ) 4 2
 JV7027  NGVD 29 (02/23/93)  125.3    (m)  GEOID90  model used  GPS OBS        
 JV7027
 JV7027.Superseded values are not recommended for survey control.
 JV7027
 JV7027.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7027.See file dsdata.pdf to determine how the superseded data were derived.
 JV7027
 JV7027_MARKER: DD = SURVEY DISK
 JV7027_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7027_STAMPING: 2539001 2/91
 JV7027_MARK LOGO: MD-027
 JV7027_PROJECTION: FLUSH
 JV7027_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7027_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7027+STABILITY: SURFACE MOTION
 JV7027_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7027+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7027
 JV7027  HISTORY     - Date     Condition        Report By
 JV7027  HISTORY     - 1991     MONUMENTED       MD-027
 JV7027  HISTORY     - 20000915 GOOD             MD-027
 JV7027
 JV7027                          STATION DESCRIPTION
 JV7027
 JV7027'DESCRIBED BY HOWARD COUNTY MARYLAND 1991
 JV7027'THE STATION IS LOCATED IN THE CITY OF COLUMBIA ABOUT 1.7 MI (2.7 KM)
 JV7027'SOUTHWEST OF THE VISITOR CENTER, 0.5 MI (0.8 KM) SOUTH OF HOWARD
 JV7027'COUNTY GENERAL HOSPITAL.
 JV7027'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 29 AND
 JV7027'STATE HIGHWAY 32, GO  1. MI (1.6 KM) WEST ON HIGHWAY 32 TO
 JV7027'INTERSECTION WITH CEDAR LANE, TURN NORTH ON CEDAR LANE AND GO ABOUT
 JV7027'1.3 MI (2.1 KM) TO THE STATION ON THE WEST SIDE OF THE STREET AT THE
 JV7027'CORNER WITH HICKORY LANE.
 JV7027'THE STATION LIES 64.7 FT (19.7 M) SOUTH FROM THE CENTERLINE OF HILLTOP
 JV7027'LANE, 7.4 FT (2.3 M) WEST OF THE WEST SIDE FACE OF CURB OF CEDAR LANE
 JV7027'AND 21.5 FT (6.6 M) SOUTH OF A 2 INCHES DIAMETER CHERRY TREE.
 JV7027'THE STATION IS A STANDARD HOWARD COUNTY SURVEY CONTROL DISC, ON TOP OF
 JV7027'A ROUND CONCRETE MONUMENT ABOUT .75 FT (0.23 M) IN DIAMETER, THE DISC
 JV7027'IS FLUSH WITH THE GROUND.  THE DISC IS STAMPED HOWARD COUNTY CONTROL
 JV7027'2539001 2/91.
 JV7027'OWNERSHIP --STREET RIGHT OF WAY.
 JV7027'COMMENT--NO AZIMUTH MARKS OR REFERENCE MARK STATIONS FOR THIS STATION
 JV7027'WERE INCLUDED IN THIS GPS PROJECT.
 JV7027
 JV7027                          STATION RECOVERY (2000)
 JV7027
 JV7027'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7027'RECOVERY BY HOWARD COUNTY 2000 FOUND  AS DESCRIBED, IN GOOD
 JV7027'CONDITION.
 JV7027'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1546 ***********************************************************************
 JV1546  DESIGNATION -  25 PRR
 JV1546  PID         -  JV1546
 JV1546  STATE/COUNTY-  MD/BALTIMORE
 JV1546  COUNTRY     -  US
 JV1546  USGS QUAD   -  PHOENIX (2016)
 JV1546
 JV1546                         *CURRENT SURVEY CONTROL
 JV1546  ______________________________________________________________________
 JV1546* NAD 83(1986) POSITION- 39 34 16.9    (N) 076 37 07.1    (W)   HD_HELD2
 JV1546* NAVD 88 ORTHO HEIGHT -    94.193 (meters)      309.03  (feet) ADJUSTED
 JV1546  ______________________________________________________________________
 JV1546  GEOID HEIGHT    -        -32.359 (meters)                     GEOID18
 JV1546  DYNAMIC HEIGHT  -         94.145 (meters)      308.87  (feet) COMP
 JV1546  MODELED GRAVITY -    980,118.3   (mgal)                       NAVD 88
 JV1546
 JV1546  VERT ORDER      -  SECOND    CLASS 0
 JV1546
 JV1546.The horizontal coordinates were established by autonomous hand held GPS
 JV1546.observations and have an estimated accuracy of +/- 10 meters.
 JV1546
 JV1546.The orthometric height was determined by differential leveling and
 JV1546.adjusted by the NATIONAL GEODETIC SURVEY
 JV1546.in June 1991.
 JV1546
 JV1546.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1546.GEOID18 height accuracy estimate available here.
 JV1546
 JV1546.Click photographs - Photos may exist for this station.
 JV1546
 JV1546.The dynamic height is computed by dividing the NAVD 88
 JV1546.geopotential number by the normal gravity value computed on the
 JV1546.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1546.degrees latitude (g = 980.6199 gals.).
 JV1546
 JV1546.The modeled gravity was interpolated from observed gravity values.
 JV1546
 JV1546;                    North         East    Units  Estimated Accuracy
 JV1546;SPC MD       -   211,506.      432,769.      MT  (+/- 10 meters HH2 GPS)
 JV1546
 JV1546_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6096981435(NAD 83)
 JV1546
 JV1546                          SUPERSEDED SURVEY CONTROL
 JV1546
 JV1546  NGVD 29 (11/26/84)   94.431  (m)          309.81   (f) ADJUSTED    2 0
 JV1546
 JV1546.Superseded values are not recommended for survey control.
 JV1546
 JV1546.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1546.See file dsdata.pdf to determine how the superseded data were derived.
 JV1546
 JV1546_MARKER: B = BOLT
 JV1546_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1546_SP_SET: BRIDGE
 JV1546_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1546
 JV1546  HISTORY     - Date     Condition        Report By
 JV1546  HISTORY     - UNK      MONUMENTED       PRR
 JV1546  HISTORY     - 1935     GOOD             CGS
 JV1546
 JV1546                          STATION DESCRIPTION
 JV1546
 JV1546'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1546'AT CORBETT.
 JV1546'AT CORBETT, BALTIMORE COUNTY, 0.3 MILE NORTH OF THE PENNSYLVANIA
 JV1546'STATION, ABOUT 510 FEET SOUTH OF SIGNAL 22.6, IN THE TOP OF THE
 JV1546'EAST END OF BRIDGE 22.41, AND 10 FEET EAST OF THE CENTERLINE OF
 JV1546'THE EAST TRACK.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2205 ***********************************************************************
 JV2205  DESIGNATION -  25+41 BORR
 JV2205  PID         -  JV2205
 JV2205  STATE/COUNTY-  MD/MONTGOMERY
 JV2205  COUNTRY     -  US
 JV2205  USGS QUAD   -  GERMANTOWN (2016)
 JV2205
 JV2205                         *CURRENT SURVEY CONTROL
 JV2205  ______________________________________________________________________
 JV2205* NAD 83(1986) POSITION- 39 09 53.     (N) 077 15 48.     (W)   SCALED
 JV2205* NAVD 88 ORTHO HEIGHT -   118.267 (meters)      388.01  (feet) ADJUSTED
 JV2205  ______________________________________________________________________
 JV2205  GEOID HEIGHT    -        -31.820 (meters)                     GEOID18
 JV2205  DYNAMIC HEIGHT  -        118.204 (meters)      387.81  (feet) COMP
 JV2205  MODELED GRAVITY -    980,098.5   (mgal)                       NAVD 88
 JV2205
 JV2205  VERT ORDER      -  FIRST     CLASS II
 JV2205
 JV2205.The horizontal coordinates were scaled from a map and have
 JV2205.an estimated accuracy of +/- 6 seconds.
 JV2205
 JV2205.The orthometric height was determined by differential leveling and
 JV2205.adjusted by the NATIONAL GEODETIC SURVEY
 JV2205.in June 1991.
 JV2205
 JV2205.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2205.GEOID18 height accuracy estimate available here.
 JV2205
 JV2205.Click photographs - Photos may exist for this station.
 JV2205
 JV2205.The dynamic height is computed by dividing the NAVD 88
 JV2205.geopotential number by the normal gravity value computed on the
 JV2205.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2205.degrees latitude (g = 980.6199 gals.).
 JV2205
 JV2205.The modeled gravity was interpolated from observed gravity values.
 JV2205
 JV2205;                    North         East    Units  Estimated Accuracy
 JV2205;SPC MD       -   166,330.      377,240.      MT  (+/- 180 meters Scaled)
 JV2205
 JV2205_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ044374(NAD 83)
 JV2205
 JV2205                          SUPERSEDED SURVEY CONTROL
 JV2205
 JV2205  NGVD 29 (11/26/84)  118.482  (m)          388.72   (f) ADJUSTED    1 2
 JV2205
 JV2205.Superseded values are not recommended for survey control.
 JV2205
 JV2205.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2205.See file dsdata.pdf to determine how the superseded data were derived.
 JV2205
 JV2205_MARKER: Q = CHISELED SQUARE
 JV2205_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2205_SP_SET: SIGNAL CONTROL BOX
 JV2205_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2205
 JV2205  HISTORY     - Date     Condition        Report By
 JV2205  HISTORY     - UNK      MONUMENTED       BORR
 JV2205  HISTORY     - 1938     GOOD             CGS
 JV2205  HISTORY     - 1953     MARK NOT FOUND   CGS
 JV2205
 JV2205                          STATION DESCRIPTION
 JV2205
 JV2205'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2205'0.8 MI NW FROM WARING.
 JV2205'0.8 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2205'FROM THE STATION AT WARING, MONTGOMERY COUNTY, NEAR POLE
 JV2205'25+41, AT A SIGNAL-CONTROL BOX, ON THE SOUTHWEST CORNER OF THE
 JV2205'CONCRETE BASE, 11 FEET NORTHEAST OF THE CENTER LINE OF THE
 JV2205'NORTH-BOUND TRACK, AND LEVEL WITH THE RAILS.  A CHISELED SQUARE.
 JV2205
 JV2205                          STATION RECOVERY (1953)
 JV2205
 JV2205'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953
 JV2205'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1292 ***********************************************************************
 HV1292  DESIGNATION -  2505 WSSC
 HV1292  PID         -  HV1292
 HV1292  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1292  COUNTRY     -  US
 HV1292  USGS QUAD   -  LANHAM (2016)
 HV1292
 HV1292                         *CURRENT SURVEY CONTROL
 HV1292  ______________________________________________________________________
 HV1292* NAD 83(1986) POSITION- 38 59 27.     (N) 076 51 07.     (W)   SCALED
 HV1292* NAVD 88 ORTHO HEIGHT -    50.24  (+/-2cm)      164.8   (feet) VERTCON3
 HV1292  ______________________________________________________________________
 HV1292  GEOID HEIGHT    -        -32.342 (meters)                     GEOID18
 HV1292  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1292
 HV1292.The horizontal coordinates were scaled from a map and have
 HV1292.an estimated accuracy of +/- 6 seconds.
 HV1292
 HV1292.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1292.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1292
 HV1292.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1292.GEOID18 height accuracy estimate available here.
 HV1292
 HV1292.The vertical order pertains to the NGVD 29 superseded value.
 HV1292
 HV1292.Click photographs - Photos may exist for this station.
 HV1292
 HV1292;                    North         East    Units  Estimated Accuracy
 HV1292;SPC MD       -   147,000.      412,830.      MT  (+/- 180 meters Scaled)
 HV1292
 HV1292_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ396173(NAD 83)
 HV1292
 HV1292                          SUPERSEDED SURVEY CONTROL
 HV1292
 HV1292  NGVD 29 (11/26/84)   50.466  (m)          165.57   (f) ADJUSTED    2 0
 HV1292
 HV1292.Superseded values are not recommended for survey control.
 HV1292
 HV1292.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1292.See file dsdata.pdf to determine how the superseded data were derived.
 HV1292
 HV1292_MARKER: N = NAIL
 HV1292_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1292_SP_SET: OAK TREE ROOT
 HV1292_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1292
 HV1292  HISTORY     - Date     Condition        Report By
 HV1292  HISTORY     - UNK      MONUMENTED       WSSC
 HV1292  HISTORY     - 1944     GOOD             WSSC
 HV1292
 HV1292                          STATION DESCRIPTION
 HV1292
 HV1292'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1292'2 MI W FROM GLENN DALE.
 HV1292'ON THE BRANCHVILLE-GLENN DALE ROAD, 0.2 MILE EAST OF THE CIPRIANO
 HV1292'SHORT CUT TO LANHAM, IN A VALLEY ON THE NORTH SIDE OF THE ROAD,
 HV1292'25 FEET WEST OF A CULVERT, AND IN THE SOUTHWEST ROOT OF A 36-INCH
 HV1292'OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1293 ***********************************************************************
 HV1293  DESIGNATION -  2506 WSSC
 HV1293  PID         -  HV1293
 HV1293  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1293  COUNTRY     -  US
 HV1293  USGS QUAD   -  LANHAM (2016)
 HV1293
 HV1293                         *CURRENT SURVEY CONTROL
 HV1293  ______________________________________________________________________
 HV1293* NAD 83(1986) POSITION- 38 59 26.     (N) 076 50 53.     (W)   SCALED
 HV1293* NAVD 88 ORTHO HEIGHT -    63.62  (+/-2cm)      208.7   (feet) VERTCON3
 HV1293  ______________________________________________________________________
 HV1293  GEOID HEIGHT    -        -32.353 (meters)                     GEOID18
 HV1293  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1293
 HV1293.The horizontal coordinates were scaled from a map and have
 HV1293.an estimated accuracy of +/- 6 seconds.
 HV1293
 HV1293.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1293.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1293
 HV1293.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1293.GEOID18 height accuracy estimate available here.
 HV1293
 HV1293.The vertical order pertains to the NGVD 29 superseded value.
 HV1293
 HV1293.Click photographs - Photos may exist for this station.
 HV1293
 HV1293;                    North         East    Units  Estimated Accuracy
 HV1293;SPC MD       -   146,970.      413,160.      MT  (+/- 180 meters Scaled)
 HV1293
 HV1293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ399173(NAD 83)
 HV1293
 HV1293                          SUPERSEDED SURVEY CONTROL
 HV1293
 HV1293  NGVD 29 (11/26/84)   63.847  (m)          209.47   (f) ADJUSTED    2 0
 HV1293
 HV1293.Superseded values are not recommended for survey control.
 HV1293
 HV1293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1293.See file dsdata.pdf to determine how the superseded data were derived.
 HV1293
 HV1293_MARKER: Q = CHISELED SQUARE
 HV1293_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1293_SP_SET: GAS PUMP BASE
 HV1293_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1293
 HV1293  HISTORY     - Date     Condition        Report By
 HV1293  HISTORY     - UNK      MONUMENTED       WSSC
 HV1293  HISTORY     - 1944     GOOD             WSSC
 HV1293
 HV1293                          STATION DESCRIPTION
 HV1293
 HV1293'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1293'1.8 MI W FROM GLENN DALE.
 HV1293'ON THE BRANCHVILLE-GLENN DALE ROAD, 0.4 MILE EAST OF THE CIPRIANO
 HV1293'SHORT CUT TO LANHAM, ON THE TOP OF A HILL, AT A SERVICE STATION,
 HV1293'ON THE SOUTH SIDE OF THE ROAD, AND ON THE EAST END OF THE CONCRETE
 HV1293'BASE OF THE GASOLINE PUMPS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1296 ***********************************************************************
 HV1296  DESIGNATION -  2507 WSSC
 HV1296  PID         -  HV1296
 HV1296  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1296  COUNTRY     -  US
 HV1296  USGS QUAD   -  LANHAM (2016)
 HV1296
 HV1296                         *CURRENT SURVEY CONTROL
 HV1296  ______________________________________________________________________
 HV1296* NAD 83(1986) POSITION- 38 59 27.     (N) 076 49 57.     (W)   SCALED
 HV1296* NAVD 88 ORTHO HEIGHT -    50.28  (+/-2cm)      165.0   (feet) VERTCON3
 HV1296  ______________________________________________________________________
 HV1296  GEOID HEIGHT    -        -32.397 (meters)                     GEOID18
 HV1296  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1296
 HV1296.The horizontal coordinates were scaled from a map and have
 HV1296.an estimated accuracy of +/- 6 seconds.
 HV1296
 HV1296.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1296.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1296
 HV1296.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1296.GEOID18 height accuracy estimate available here.
 HV1296
 HV1296.The vertical order pertains to the NGVD 29 superseded value.
 HV1296
 HV1296.Click photographs - Photos may exist for this station.
 HV1296
 HV1296;                    North         East    Units  Estimated Accuracy
 HV1296;SPC MD       -   147,000.      414,510.      MT  (+/- 180 meters Scaled)
 HV1296
 HV1296_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ412173(NAD 83)
 HV1296
 HV1296                          SUPERSEDED SURVEY CONTROL
 HV1296
 HV1296  NGVD 29 (11/26/84)   50.507  (m)          165.71   (f) ADJUSTED    2 0
 HV1296
 HV1296.Superseded values are not recommended for survey control.
 HV1296
 HV1296.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1296.See file dsdata.pdf to determine how the superseded data were derived.
 HV1296
 HV1296_MARKER: Q = CHISELED SQUARE
 HV1296_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1296_SP_SET: CULVERT
 HV1296_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1296
 HV1296  HISTORY     - Date     Condition        Report By
 HV1296  HISTORY     - UNK      MONUMENTED       WSSC
 HV1296  HISTORY     - 1944     GOOD             WSSC
 HV1296
 HV1296                          STATION DESCRIPTION
 HV1296
 HV1296'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1296'1 MI W FROM GLENN DALE.
 HV1296'ON THE BRANCHVILLE-GLENN DALE ROAD, 0.2 MILE EAST OF TELEGRAPH
 HV1296'ROAD, AT A CULVERT UNDER A PRIVATE DRIVE, AND ON THE NORTH END
 HV1296'OF THE WEST HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1298 ***********************************************************************
 HV1298  DESIGNATION -  2508 WSSC
 HV1298  PID         -  HV1298
 HV1298  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1298  COUNTRY     -  US
 HV1298  USGS QUAD   -  LANHAM (2016)
 HV1298
 HV1298                         *CURRENT SURVEY CONTROL
 HV1298  ______________________________________________________________________
 HV1298* NAD 83(1986) POSITION- 38 59 23.     (N) 076 49 20.     (W)   SCALED
 HV1298* NAVD 88 ORTHO HEIGHT -    44.00  (+/-2cm)      144.4   (feet) VERTCON3
 HV1298  ______________________________________________________________________
 HV1298  GEOID HEIGHT    -        -32.428 (meters)                     GEOID18
 HV1298  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1298
 HV1298.The horizontal coordinates were scaled from a map and have
 HV1298.an estimated accuracy of +/- 6 seconds.
 HV1298
 HV1298.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1298.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1298
 HV1298.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1298.GEOID18 height accuracy estimate available here.
 HV1298
 HV1298.The vertical order pertains to the NGVD 29 superseded value.
 HV1298
 HV1298.Click photographs - Photos may exist for this station.
 HV1298
 HV1298;                    North         East    Units  Estimated Accuracy
 HV1298;SPC MD       -   146,880.      415,400.      MT  (+/- 180 meters Scaled)
 HV1298
 HV1298_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ421172(NAD 83)
 HV1298
 HV1298                          SUPERSEDED SURVEY CONTROL
 HV1298
 HV1298  NGVD 29 (11/26/84)   44.222  (m)          145.09   (f) ADJUSTED    2 0
 HV1298
 HV1298.Superseded values are not recommended for survey control.
 HV1298
 HV1298.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1298.See file dsdata.pdf to determine how the superseded data were derived.
 HV1298
 HV1298_MARKER: N = NAIL
 HV1298_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1298_SP_SET: MAPLE TREE ROOT
 HV1298_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1298
 HV1298  HISTORY     - Date     Condition        Report By
 HV1298  HISTORY     - UNK      MONUMENTED       WSSC
 HV1298  HISTORY     - 1944     GOOD             WSSC
 HV1298
 HV1298                          STATION DESCRIPTION
 HV1298
 HV1298'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1298'0.2 MI N FROM GLENN DALE.
 HV1298'ON THE BRANCHVILLE-GLENN DALE ROAD, AT A 24-INCH MAPLE TREE ON THE
 HV1298'WEST SIDE OF THE ROAD, AND IN THE SOUTHEAST ROOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1425 ***********************************************************************
 HV1425  DESIGNATION -  2533 WSSC
 HV1425  PID         -  HV1425
 HV1425  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1425  COUNTRY     -  US
 HV1425  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1425
 HV1425                         *CURRENT SURVEY CONTROL
 HV1425  ______________________________________________________________________
 HV1425* NAD 83(1986) POSITION- 38 59 51.     (N) 076 59 06.     (W)   SCALED
 HV1425* NAVD 88 ORTHO HEIGHT -    60.32  (+/-2cm)      197.9   (feet) VERTCON3
 HV1425  ______________________________________________________________________
 HV1425  GEOID HEIGHT    -        -32.036 (meters)                     GEOID18
 HV1425  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1425
 HV1425.The horizontal coordinates were scaled from a map and have
 HV1425.an estimated accuracy of +/- 6 seconds.
 HV1425
 HV1425.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1425.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1425
 HV1425.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1425.GEOID18 height accuracy estimate available here.
 HV1425
 HV1425.The vertical order pertains to the NGVD 29 superseded value.
 HV1425
 HV1425.Click photographs - Photos may exist for this station.
 HV1425
 HV1425;                    North         East    Units  Estimated Accuracy
 HV1425;SPC MD       -   147,730.      401,300.      MT  (+/- 180 meters Scaled)
 HV1425
 HV1425_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ281183(NAD 83)
 HV1425
 HV1425                          SUPERSEDED SURVEY CONTROL
 HV1425
 HV1425  NGVD 29 (11/26/84)   60.535  (m)          198.61   (f) ADJUSTED    2 0
 HV1425
 HV1425.Superseded values are not recommended for survey control.
 HV1425
 HV1425.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1425.See file dsdata.pdf to determine how the superseded data were derived.
 HV1425
 HV1425_MARKER: Z = SEE DESCRIPTION
 HV1425_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1425_SP_SET: PINE TREE ROOT
 HV1425_STAMPING: WSSC 2533
 HV1425_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1425
 HV1425  HISTORY     - Date     Condition        Report By
 HV1425  HISTORY     - UNK      MONUMENTED       WSSC
 HV1425  HISTORY     - 1939     GOOD             WSSC
 HV1425
 HV1425                          STATION DESCRIPTION
 HV1425
 HV1425'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1425'AT LANGLEY PARK.
 HV1425'ON NEW HAMPSHIRE AVENUE, 0.5 MILE NORTH OF THE INTERSECTION OF
 HV1425'UNIVERSITY LANE, ON THE EAST SIDE OF THE AVENUE, SOUTH OF MILE
 HV1425'MARKER 2.4, AND IN THE WEST ROOT OF AN 18-INCH PINE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1305 ***********************************************************************
 HV1305  DESIGNATION -  2534 WSSC
 HV1305  PID         -  HV1305
 HV1305  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1305  COUNTRY     -  US
 HV1305  USGS QUAD   -  LANHAM (2016)
 HV1305
 HV1305                         *CURRENT SURVEY CONTROL
 HV1305  ______________________________________________________________________
 HV1305* NAD 83(1986) POSITION- 38 52 54.     (N) 076 51 42.     (W)   SCALED
 HV1305* NAVD 88 ORTHO HEIGHT -    38.88  (+/-2cm)      127.6   (feet) VERTCON3
 HV1305  ______________________________________________________________________
 HV1305  GEOID HEIGHT    -        -32.466 (meters)                     GEOID18
 HV1305  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1305
 HV1305.The horizontal coordinates were scaled from a map and have
 HV1305.an estimated accuracy of +/- 6 seconds.
 HV1305
 HV1305.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1305.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1305
 HV1305.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1305.GEOID18 height accuracy estimate available here.
 HV1305
 HV1305.The vertical order pertains to the NGVD 29 superseded value.
 HV1305
 HV1305.Click photographs - Photos may exist for this station.
 HV1305
 HV1305;                    North         East    Units  Estimated Accuracy
 HV1305;SPC MD       -   134,880.      412,000.      MT  (+/- 180 meters Scaled)
 HV1305
 HV1305_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ385052(NAD 83)
 HV1305
 HV1305                          SUPERSEDED SURVEY CONTROL
 HV1305
 HV1305  NGVD 29 (11/26/84)   39.128  (m)          128.37   (f) ADJUSTED    2 0
 HV1305
 HV1305.Superseded values are not recommended for survey control.
 HV1305
 HV1305.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1305.See file dsdata.pdf to determine how the superseded data were derived.
 HV1305
 HV1305_MARKER: N = NAIL
 HV1305_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1305_SP_SET: ASH TREE
 HV1305_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1305
 HV1305  HISTORY     - Date     Condition        Report By
 HV1305  HISTORY     - 1944     MONUMENTED       WSSC
 HV1305
 HV1305                          STATION DESCRIPTION
 HV1305
 HV1305'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1305'1.3 MI SE FROM RANDOLPH VILLAGE.
 HV1305'AT THE INTERSECTION OF RITCHIE ROAD AND WALKER MILL ROAD, 15 FEET
 HV1305'EAST OF THE EDGE OF THE PAVING, AND IN THE NORTHWEST SIDE OF A
 HV1305'20-INCH ASH TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1343 ***********************************************************************
 HV1343  DESIGNATION -  2557 WSSC
 HV1343  PID         -  HV1343
 HV1343  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1343  COUNTRY     -  US
 HV1343  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1343
 HV1343                         *CURRENT SURVEY CONTROL
 HV1343  ______________________________________________________________________
 HV1343* NAD 83(1986) POSITION- 38 55 52.     (N) 076 56 05.     (W)   SCALED
 HV1343* NAVD 88 ORTHO HEIGHT -     8.84  (+/-2cm)       29.0   (feet) VERTCON3
 HV1343  ______________________________________________________________________
 HV1343  GEOID HEIGHT    -        -32.212 (meters)                     GEOID18
 HV1343  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1343
 HV1343.The horizontal coordinates were scaled from a map and have
 HV1343.an estimated accuracy of +/- 6 seconds.
 HV1343
 HV1343.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1343.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1343
 HV1343.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1343.GEOID18 height accuracy estimate available here.
 HV1343
 HV1343.The vertical order pertains to the NGVD 29 superseded value.
 HV1343
 HV1343.Click photographs - Photos may exist for this station.
 HV1343
 HV1343;                    North         East    Units  Estimated Accuracy
 HV1343;SPC MD       -   140,360.      405,660.      MT  (+/- 180 meters Scaled)
 HV1343
 HV1343_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ322109(NAD 83)
 HV1343
 HV1343                          SUPERSEDED SURVEY CONTROL
 HV1343
 HV1343  NGVD 29 (11/26/84)    9.069  (m)           29.75   (f) ADJUSTED    2 0
 HV1343
 HV1343.Superseded values are not recommended for survey control.
 HV1343
 HV1343.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1343.See file dsdata.pdf to determine how the superseded data were derived.
 HV1343
 HV1343_MARKER: Z = SEE DESCRIPTION
 HV1343_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1343_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1343+STABILITY: SURFACE MOTION
 HV1343
 HV1343  HISTORY     - Date     Condition        Report By
 HV1343  HISTORY     - UNK      MONUMENTED       WSSC
 HV1343  HISTORY     - 1944     GOOD             WSSC
 HV1343
 HV1343                          STATION DESCRIPTION
 HV1343
 HV1343'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1343'1.8 MI NE FROM MD DC LINE.
 HV1343'ON THE BALTIMORE AND OHIO RAILROAD (SHEPHERDS BRANCH), ABOUT
 HV1343'2000 FEET NORTHWEST OF KENILWORTH ROAD, SOUTH OF THE CROSSING
 HV1343'OF PARKERS LANE, AND ON THE EAST SIDE OF THE TRACK. BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2632 ***********************************************************************
 JV2632  DESIGNATION -  26
 JV2632  PID         -  JV2632
 JV2632  STATE/COUNTY-  MD/MONTGOMERY
 JV2632  COUNTRY     -  US
 JV2632  USGS QUAD   -  KENSINGTON (2016)
 JV2632
 JV2632                         *CURRENT SURVEY CONTROL
 JV2632  ______________________________________________________________________
 JV2632* NAD 83(1986) POSITION- 39 03 38.     (N) 077 03 09.     (W)   SCALED
 JV2632* NAVD 88 ORTHO HEIGHT -   134.05  (+/-2cm)      439.8   (feet) VERTCON3
 JV2632  ______________________________________________________________________
 JV2632  GEOID HEIGHT    -        -31.889 (meters)                     GEOID18
 JV2632  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2632
 JV2632.The horizontal coordinates were scaled from a map and have
 JV2632.an estimated accuracy of +/- 6 seconds.
 JV2632
 JV2632.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2632.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2632
 JV2632.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2632.GEOID18 height accuracy estimate available here.
 JV2632
 JV2632.The vertical order pertains to the NGVD 29 superseded value.
 JV2632
 JV2632.Click photographs - Photos may exist for this station.
 JV2632
 JV2632;                    North         East    Units  Estimated Accuracy
 JV2632;SPC MD       -   154,730.      395,460.      MT  (+/- 180 meters Scaled)
 JV2632
 JV2632_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ224255(NAD 83)
 JV2632
 JV2632                          SUPERSEDED SURVEY CONTROL
 JV2632
 JV2632  NGVD 29 (11/26/84)  134.264  (m)          440.50   (f) ADJUSTED    2 0
 JV2632
 JV2632.Superseded values are not recommended for survey control.
 JV2632
 JV2632.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2632.See file dsdata.pdf to determine how the superseded data were derived.
 JV2632
 JV2632_MARKER: DD = SURVEY DISK
 JV2632_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2632_STAMPING: 26
 JV2632_MARK LOGO: CGS+SS
 JV2632_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2632+STABILITY: SURFACE MOTION
 JV2632
 JV2632  HISTORY     - Date     Condition        Report By
 JV2632  HISTORY     - 1934     MONUMENTED       MDGS
 JV2632  HISTORY     - 1944     GOOD             WSSC
 JV2632  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2632
 JV2632                          STATION DESCRIPTION
 JV2632
 JV2632'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2632'AT GLENMONT.
 JV2632'ON GEORGIA AVENUE (STATE HIGHWAY 97), AT THE JUNCTION OF THE
 JV2632'ROAD LEADING NORTH TO LAYHILL (STATE HIGHWAY 182), AND ON THE
 JV2632'WEST SIDE OF GEORGIA AVENUE.
 JV2632
 JV2632                          STATION RECOVERY (1995)
 JV2632
 JV2632'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2632'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7029 ***********************************************************************
 JV7029  DESIGNATION -  26 39 001
 JV7029  PID         -  JV7029
 JV7029  STATE/COUNTY-  MD/HOWARD
 JV7029  COUNTRY     -  US
 JV7029  USGS QUAD   -  CLARKSVILLE (2016)
 JV7029
 JV7029                         *CURRENT SURVEY CONTROL
 JV7029  ______________________________________________________________________
 JV7029* NAD 83(2011) POSITION- 39 12 51.98687(N) 076 53 08.16906(W)   ADJUSTED
 JV7029* NAD 83(2011) ELLIP HT-   133.268 (meters)        (06/27/12)   ADJUSTED
 JV7029* NAD 83(2011) EPOCH   -  2010.00
 JV7029* NAVD 88 ORTHO HEIGHT -   165.4   (meters)      543.    (feet) VERTCON3
 JV7029  ______________________________________________________________________
 JV7029  GEOID HEIGHT    -        -32.124 (meters)                     GEOID18
 JV7029  NAD 83(2011) X  -  1,122,775.556 (meters)                     COMP
 JV7029  NAD 83(2011) Y  - -4,819,354.302 (meters)                     COMP
 JV7029  NAD 83(2011) Z  -  4,010,874.469 (meters)                     COMP
 JV7029  LAPLACE CORR    -         -3.51  (seconds)                    DEFLEC18
 JV7029
 JV7029  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7029  Standards:
 JV7029         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7029            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7029  -------------------------------------------------------------------
 JV7029  NETWORK    1.03   1.76           0.44   0.40   0.90      0.10626360
 JV7029  -------------------------------------------------------------------
 JV7029  Click here for local accuracies and other accuracy information.
 JV7029
 JV7029.The horizontal coordinates were established by GPS observations
 JV7029.and adjusted by the National Geodetic Survey in June 2012.
 JV7029
 JV7029.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7029.been affixed to the stable North American tectonic plate. See 
 JV7029.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7029
 JV7029.The horizontal coordinates are valid at the epoch date displayed above
 JV7029.which is a decimal equivalence of Year/Month/Day.
 JV7029
 JV7029.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV7029.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV7029
 JV7029.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7029.GEOID18 height accuracy estimate available here.
 JV7029
 JV7029.Click photographs - Photos may exist for this station.
 JV7029
 JV7029.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7029
 JV7029.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7029
 JV7029.The ellipsoidal height was determined by GPS observations
 JV7029.and is referenced to NAD 83.
 JV7029
 JV7029. The following values were computed from the NAD 83(2011) position.
 JV7029
 JV7029;                    North         East     Units Scale Factor Converg.
 JV7029;SPC MD       -   171,818.099   409,879.534   MT  0.99996727   +0 04 18.5
 JV7029;SPC MD       -   563,706.55  1,344,746.44   sFT  0.99996727   +0 04 18.5
 JV7029;UTM  18      - 4,342,267.627   337,210.409   MT  0.99992630   -1 11 32.6
 JV7029
 JV7029!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7029!SPC MD       -   0.99997909  x   0.99996727  =   0.99994636
 JV7029!UTM  18      -   0.99997909  x   0.99992630  =   0.99990539
 JV7029
 JV7029_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3721042267(NAD 83)
 JV7029
 JV7029                          SUPERSEDED SURVEY CONTROL
 JV7029
 JV7029  NAD 83(2007)-  39 12 51.98711(N)    076 53 08.16988(W) AD(2002.00) 0
 JV7029  ELLIP H (02/10/07)  133.294  (m)                       GP(2002.00)    
 JV7029  ELLIP H (08/30/02)  133.289  (m)                       GP(       ) 4 2
 JV7029  NAD 83(1991)-  39 12 51.98691(N)    076 53 08.16949(W) AD(       ) 1
 JV7029  ELLIP H (02/23/93)  133.212  (m)                       GP(       ) 4 2
 JV7029  NGVD 29 (02/23/93)  165.6    (m)  GEOID90  model used  GPS OBS        
 JV7029
 JV7029.Superseded values are not recommended for survey control.
 JV7029
 JV7029.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7029.See file dsdata.pdf to determine how the superseded data were derived.
 JV7029
 JV7029_MARKER: DD = SURVEY DISK
 JV7029_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7029_STAMPING: 2639001 1975
 JV7029_MARK LOGO: MD-027
 JV7029_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7029_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7029+STABILITY: SURFACE MOTION
 JV7029_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7029+SATELLITE: SATELLITE OBSERVATIONS - November 25, 1990
 JV7029
 JV7029  HISTORY     - Date     Condition        Report By
 JV7029  HISTORY     - 1975     MONUMENTED       MD-027
 JV7029  HISTORY     - 19901125 GOOD             MD-027
 JV7029
 JV7029                          STATION DESCRIPTION
 JV7029
 JV7029'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7029'THE STATION IS LOCATED IN THE CITY OF COLUMBIA ABOUT 1.5 MI (2.4 KM)
 JV7029'WEST OF THE VISITOR CENTER, ON TOP OF THE BUILDING OF HOWARD COUNTY
 JV7029'GENERAL HOSPITAL. OWNERSHIP-- HOWARD COUNTY GENERAL HOSPITAL.
 JV7029'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 32 AND
 JV7029'US. HIGHWAY 29, GO 1. MI (1.6 KM) WEST ON HIGHWAY 32 TO INTERSECTION
 JV7029'WITH CEDAR LANE, TURN RIGHT AND GO 1.8 MI (2.9 KM) NORH ON CEDAR LANE
 JV7029'TO HOWARD COUNTY GENERAL HOSPITAL ON THE RIGHT.
 JV7029'THE STATIION IS ON THE ROOF OF THE SOUTH WEST TOWER OF THE HOSPITAL.
 JV7029'IT IS 9.4 M (30.8 FT) NORTHEAST FROM THE SOUTH WEST INSIDE CORNER OF
 JV7029'THE TOWER, 9.5 M (31.2 FT) SOTHWEST FROM THE NORTHEAST INSIDE CORNER
 JV7029', 9.2 M (30.2 FT) SOUTHEAST FROM THE NORTHWEST INSIDE CORNER AND 9.7
 JV7029'M (31.8 FT) NORTHWEST FROM THE SOUTHEAST INSIDE CORNER.
 JV7029'ARRANGEMENTS SHOLD BE MADE IN ADVANCE WITH HOSPITAL ENGINEERING OR
 JV7029'SECURITY DEPARTMENTS TO OBTAIN PERMISSION TO ACCESS THE TOWER AND A
 JV7029'SECURITY GARD TO OPEN ACCESS DOOR.
 JV7029'THE STATION IS A STANDARD HOWARD COUNTY SURVEY DISC, STAMPED 2639001
 JV7029'1975, SET ON TOP OF A ROUND CONCRETE MONUMENT FLUSUH WITH THE SURFACE
 JV7029'OF THE TOWER ROOF.
 JV7029'COMMENT--NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV7029'INCLUDED IN THIS GPS SURVEY PROJECT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7030 ***********************************************************************
 JV7030  DESIGNATION -  26 46 006
 JV7030  PID         -  JV7030
 JV7030  STATE/COUNTY-  MD/HOWARD
 JV7030  COUNTRY     -  US
 JV7030  USGS QUAD   -  RELAY (2016)
 JV7030
 JV7030                         *CURRENT SURVEY CONTROL
 JV7030  ______________________________________________________________________
 JV7030* NAD 83(2011) POSITION- 39 12 41.63939(N) 076 44 17.16314(W)   ADJUSTED
 JV7030* NAD 83(2011) ELLIP HT-    36.487 (meters)        (06/27/12)   ADJUSTED
 JV7030* NAD 83(2011) EPOCH   -  2010.00
 JV7030* NAVD 88 ORTHO HEIGHT -    68.9   (meters)      226.    (feet) VERTCON3
 JV7030  ______________________________________________________________________
 JV7030  GEOID HEIGHT    -        -32.453 (meters)                     GEOID18
 JV7030  NAD 83(2011) X  -  1,135,207.794 (meters)                     COMP
 JV7030  NAD 83(2011) Y  - -4,816,571.248 (meters)                     COMP
 JV7030  NAD 83(2011) Z  -  4,010,566.038 (meters)                     COMP
 JV7030  LAPLACE CORR    -         -6.13  (seconds)                    DEFLEC18
 JV7030
 JV7030  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7030  Standards:
 JV7030         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7030            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7030  -------------------------------------------------------------------
 JV7030  NETWORK    1.18   2.14           0.47   0.49   1.09      0.10697247
 JV7030  -------------------------------------------------------------------
 JV7030  Click here for local accuracies and other accuracy information.
 JV7030
 JV7030.The horizontal coordinates were established by GPS observations
 JV7030.and adjusted by the National Geodetic Survey in June 2012.
 JV7030
 JV7030.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7030.been affixed to the stable North American tectonic plate. See 
 JV7030.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7030
 JV7030.The horizontal coordinates are valid at the epoch date displayed above
 JV7030.which is a decimal equivalence of Year/Month/Day.
 JV7030
 JV7030.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV7030.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV7030
 JV7030.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7030.GEOID18 height accuracy estimate available here.
 JV7030
 JV7030.Click photographs - Photos may exist for this station.
 JV7030
 JV7030.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7030
 JV7030.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7030
 JV7030.The ellipsoidal height was determined by GPS observations
 JV7030.and is referenced to NAD 83.
 JV7030
 JV7030. The following values were computed from the NAD 83(2011) position.
 JV7030
 JV7030;                    North         East     Units Scale Factor Converg.
 JV7030;SPC MD       -   171,525.262   422,618.883   MT  0.99996698   +0 09 51.8
 JV7030;SPC MD       -   562,745.80  1,386,542.12   sFT  0.99996698   +0 09 51.8
 JV7030;UTM  18      - 4,341,693.927   349,939.364   MT  0.99987727   -1 05 56.4
 JV7030
 JV7030!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7030!SPC MD       -   0.99999428  x   0.99996698  =   0.99996126
 JV7030!UTM  18      -   0.99999428  x   0.99987727  =   0.99987155
 JV7030
 JV7030_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4993941693(NAD 83)
 JV7030
 JV7030                          SUPERSEDED SURVEY CONTROL
 JV7030
 JV7030  NAD 83(2007)-  39 12 41.63965(N)    076 44 17.16396(W) AD(2002.00) 0
 JV7030  ELLIP H (02/10/07)   36.509  (m)                       GP(2002.00)    
 JV7030  ELLIP H (08/30/02)   36.509  (m)                       GP(       ) 4 2
 JV7030  NAD 83(1991)-  39 12 41.63927(N)    076 44 17.16352(W) AD(       ) 1
 JV7030  ELLIP H (02/23/93)   36.445  (m)                       GP(       ) 4 2
 JV7030  NGVD 29 (02/23/93)   69.2    (m)  GEOID90  model used  GPS OBS        
 JV7030
 JV7030.Superseded values are not recommended for survey control.
 JV7030
 JV7030.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7030.See file dsdata.pdf to determine how the superseded data were derived.
 JV7030
 JV7030_MARKER: DD = SURVEY DISK
 JV7030_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7030_STAMPING: 2646006 1974
 JV7030_MARK LOGO: MD-027
 JV7030_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV7030_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7030+STABILITY: SURFACE MOTION
 JV7030_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7030+SATELLITE: SATELLITE OBSERVATIONS - July 22, 2008
 JV7030
 JV7030  HISTORY     - Date     Condition        Report By
 JV7030  HISTORY     - 1974     MONUMENTED       MD-027
 JV7030  HISTORY     - 19901125 GOOD             MD-027
 JV7030  HISTORY     - 19910116 GOOD
 JV7030  HISTORY     - 20030924 GOOD             USPSQD
 JV7030  HISTORY     - 20080722 GOOD             GEOMET
 JV7030
 JV7030                          STATION DESCRIPTION
 JV7030
 JV7030'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7030'THE STATION IS LOCATED ABOUT 9.7 KM (6.00 MI) NORTHEAST OF JESSUP AND
 JV7030'10.5 KM (6.50 MI) SOUTHEAST OF EHHICOTT CITY. OWNERSHIP--COUNTY
 JV7030'RIGHT-OF-WAY.
 JV7030'TO REACH THE STATION FROM THE INTERSECTION OF US HIGHWAY 1 AND
 JV7030'MONTGOMERY ROAD LOCATED 1.6 KM (1.00 MI) SOUTHWEST OF ELKRIDGE,GO
 JV7030'NORTHWEST 1.8 KM (1.10 MI) ON MONTGOMERY ROAD TO BRIDGE OVER
 JV7030'INTERSTATE 95. THE STATION IS ON THE SOUTHEAST SIDE OF THE BRIDGE.
 JV7030'THE STATION LIES 1.5 M (4.9 FT) SUTHWEST FROM A CROSS CUT IN THE EAST
 JV7030'CONCRETE WALK ON THE SOUTH SIDE OF THE BRIDGE, 5.2 M (17.1 FT)
 JV7030'NORTHEAST FROM A BALTIMORE GAS AND ELECTRIC POLE NUMBER 457120, 5.8 M
 JV7030'(19.0 FT) SOUTH FROM THE CENTERLINE OF MONTGOMERY ROAD AND 0.45 M
 JV7030'(1.48 FT) NORTH FROM A HOWARD COUNTY WITNESS POST.
 JV7030'THE STATION IS A STANDARD HOWARD COUNTY SURVEY DISC, STAMPED 2646006
 JV7030'1974 , SET ON TOP OF A 20 CM ROUND CONCRETE MONUMENT FLUSH WITH THE
 JV7030'GROUND.
 JV7030'COMMENT--NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV7030'INCLUDED IN THIS GPS SURVEY PROJECT.
 JV7030
 JV7030                          STATION RECOVERY (1991)
 JV7030
 JV7030'RECOVERED 1991
 JV7030'RECOVERED IN GOOD CONDITION.
 JV7030
 JV7030                          STATION RECOVERY (2003)
 JV7030
 JV7030'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV7030'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 23.0 FEET SOUTHEAST
 JV7030'OF A CHAIN-LINKED FENCE ON THE SOUTHWEST SIDE OF THE BRIDGE, 5.0 FEET
 JV7030'NORTHWEST OF THE SOUTHEASTERN END OF A CONCRETE SIDEWALK, 2 INCHES
 JV7030'SOUTHWEST OF THE SOUTHWEST EDGE OF THE SIDEWALK, AND UNDER A METAL
 JV7030'GUARD RAIL.  NOTE-- THERE IS NO WITNESS POST PRESENT.
 JV7030
 JV7030                          STATION RECOVERY (2008)
 JV7030
 JV7030'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2008 (KRO)
 JV7030'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1545 ***********************************************************************
 JV1545  DESIGNATION -  26 PRR
 JV1545  PID         -  JV1545
 JV1545  STATE/COUNTY-  MD/BALTIMORE
 JV1545  COUNTRY     -  US
 JV1545  USGS QUAD   -  PHOENIX (2016)
 JV1545
 JV1545                         *CURRENT SURVEY CONTROL
 JV1545  ______________________________________________________________________
 JV1545* NAD 83(1986) POSITION- 39 35 07.     (N) 076 36 40.     (W)   SCALED
 JV1545* NAVD 88 ORTHO HEIGHT -    96.607 (meters)      316.95  (feet) ADJUSTED
 JV1545  ______________________________________________________________________
 JV1545  GEOID HEIGHT    -        -32.360 (meters)                     GEOID18
 JV1545  DYNAMIC HEIGHT  -         96.558 (meters)      316.79  (feet) COMP
 JV1545  MODELED GRAVITY -    980,120.4   (mgal)                       NAVD 88
 JV1545
 JV1545  VERT ORDER      -  SECOND    CLASS 0
 JV1545
 JV1545.The horizontal coordinates were scaled from a map and have
 JV1545.an estimated accuracy of +/- 6 seconds.
 JV1545
 JV1545.The orthometric height was determined by differential leveling and
 JV1545.adjusted by the NATIONAL GEODETIC SURVEY
 JV1545.in June 1991.
 JV1545
 JV1545.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1545.GEOID18 height accuracy estimate available here.
 JV1545
 JV1545.Click photographs - Photos may exist for this station.
 JV1545
 JV1545.The dynamic height is computed by dividing the NAVD 88
 JV1545.geopotential number by the normal gravity value computed on the
 JV1545.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1545.degrees latitude (g = 980.6199 gals.).
 JV1545
 JV1545.The modeled gravity was interpolated from observed gravity values.
 JV1545
 JV1545;                    North         East    Units  Estimated Accuracy
 JV1545;SPC MD       -   213,050.      433,410.      MT  (+/- 180 meters Scaled)
 JV1545
 JV1545_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ616829(NAD 83)
 JV1545
 JV1545                          SUPERSEDED SURVEY CONTROL
 JV1545
 JV1545  NGVD 29 (11/26/84)   96.842  (m)          317.72   (f) ADJUSTED    2 0
 JV1545
 JV1545.Superseded values are not recommended for survey control.
 JV1545
 JV1545.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1545.See file dsdata.pdf to determine how the superseded data were derived.
 JV1545
 JV1545_MARKER: B = BOLT
 JV1545_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1545_SP_SET: BRIDGE
 JV1545_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1545
 JV1545  HISTORY     - Date     Condition        Report By
 JV1545  HISTORY     - UNK      MONUMENTED       PRR
 JV1545  HISTORY     - 1935     GOOD             CGS
 JV1545
 JV1545                          STATION DESCRIPTION
 JV1545
 JV1545'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1545'1.2 MI N FROM CORBETT.
 JV1545'1.2 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION AT
 JV1545'CORBETT, BALTIMORE COUNTY, 0.5 NORTH OF THE MONKTON STATION, 0.4
 JV1545'MILE NORTH OF MILEPOST 23, 141 FEET NORTH OF SIGNAL 23.5, IN
 JV1545'A BRIDGE, AND 6 FEET EAST OF THE CENTERLINE OF THE EAST TRACK.
 JV1545'A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2207 ***********************************************************************
 JV2207  DESIGNATION -  26+12
 JV2207  PID         -  JV2207
 JV2207  STATE/COUNTY-  MD/MONTGOMERY
 JV2207  COUNTRY     -  US
 JV2207  USGS QUAD   -  GERMANTOWN (2016)
 JV2207
 JV2207                         *CURRENT SURVEY CONTROL
 JV2207  ______________________________________________________________________
 JV2207* NAD 83(1986) POSITION- 39 10 14.     (N) 077 16 02.     (W)   SCALED
 JV2207* NAVD 88 ORTHO HEIGHT -   125.65  (+/-2cm)      412.2   (feet) VERTCON3
 JV2207  ______________________________________________________________________
 JV2207  GEOID HEIGHT    -        -31.829 (meters)                     GEOID18
 JV2207  VERT ORDER      -  ? (See Below)
 JV2207
 JV2207.The horizontal coordinates were scaled from a map and have
 JV2207.an estimated accuracy of +/- 6 seconds.
 JV2207
 JV2207.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2207.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2207
 JV2207.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2207.GEOID18 height accuracy estimate available here.
 JV2207
 JV2207.The vertical order pertains to the NGVD 29 superseded value.
 JV2207
 JV2207.Click photographs - Photos may exist for this station.
 JV2207
 JV2207;                    North         East    Units  Estimated Accuracy
 JV2207;SPC MD       -   166,970.      376,910.      MT  (+/- 180 meters Scaled)
 JV2207
 JV2207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ041381(NAD 83)
 JV2207
 JV2207                          SUPERSEDED SURVEY CONTROL
 JV2207
 JV2207  NGVD 29 (11/26/84)  125.863  (m)          412.94   (f) ADJUSTED       
 JV2207
 JV2207.Superseded values are not recommended for survey control.
 JV2207
 JV2207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2207.See file dsdata.pdf to determine how the superseded data were derived.
 JV2207
 JV2207_MARKER: Q = CHISELED SQUARE
 JV2207_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2207_SP_SET: SIGNAL BASE
 JV2207_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2207
 JV2207  HISTORY     - Date     Condition        Report By
 JV2207  HISTORY     - UNK      MONUMENTED       BORR
 JV2207  HISTORY     - 1938     GOOD             CGS
 JV2207  HISTORY     - 19890918 MARK NOT FOUND   NGS
 JV2207
 JV2207                          STATION DESCRIPTION
 JV2207
 JV2207'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2207'0.3 MI SE FROM GERMANTOWN.
 JV2207'0.3 MILE SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2207'THE STATION AT GERMANTOWN, MONTGOMERY COUNTY, AT THE SOUTHEAST
 JV2207'END OF A CROSS-OVER FROM THE NORTH-BOUND TO THE SOUTH-BOUND
 JV2207'TRACK, 12 FEET NORTHEAST OF THE CENTER LINE OF THE NORTH-BOUND
 JV2207'TRACK, AT SIGNAL W 26+12, ON THE SOUTHWEST CORNER OF THE CONCRETE
 JV2207'BASE, AND 1 FOOT BELOW THE LEVEL OF THE RAILS.  A CHISELED
 JV2207'SQUARE.
 JV2207
 JV2207                          STATION RECOVERY (1989)
 JV2207
 JV2207'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV2207'SEARCHED FOR BUT NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2209 ***********************************************************************
 JV2209  DESIGNATION -  26+45 BORR
 JV2209  PID         -  JV2209
 JV2209  STATE/COUNTY-  MD/MONTGOMERY
 JV2209  COUNTRY     -  US
 JV2209  USGS QUAD   -  GERMANTOWN (2016)
 JV2209
 JV2209                         *CURRENT SURVEY CONTROL
 JV2209  ______________________________________________________________________
 JV2209* NAD 83(1986) POSITION- 39 10 33.     (N) 077 16 40.     (W)   SCALED
 JV2209* NAVD 88 ORTHO HEIGHT -   134.35  (+/-2cm)      440.8   (feet) VERTCON3
 JV2209  ______________________________________________________________________
 JV2209  GEOID HEIGHT    -        -31.850 (meters)                     GEOID18
 JV2209  VERT ORDER      -  ? (See Below)
 JV2209
 JV2209.The horizontal coordinates were scaled from a map and have
 JV2209.an estimated accuracy of +/- 6 seconds.
 JV2209
 JV2209.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2209.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2209
 JV2209.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2209.GEOID18 height accuracy estimate available here.
 JV2209
 JV2209.The vertical order pertains to the NGVD 29 superseded value.
 JV2209
 JV2209.Click photographs - Photos may exist for this station.
 JV2209
 JV2209;                    North         East    Units  Estimated Accuracy
 JV2209;SPC MD       -   167,560.      376,000.      MT  (+/- 180 meters Scaled)
 JV2209
 JV2209_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ032387(NAD 83)
 JV2209
 JV2209                          SUPERSEDED SURVEY CONTROL
 JV2209
 JV2209  NGVD 29 (11/26/84)  134.556  (m)          441.46   (f) ADJUSTED       
 JV2209
 JV2209.Superseded values are not recommended for survey control.
 JV2209
 JV2209.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2209.See file dsdata.pdf to determine how the superseded data were derived.
 JV2209
 JV2209_MARKER: Q = CHISELED SQUARE
 JV2209_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2209_SP_SET: SIGNAL CONTROL BOX
 JV2209_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2209
 JV2209  HISTORY     - Date     Condition        Report By
 JV2209  HISTORY     - UNK      MONUMENTED       BORR
 JV2209  HISTORY     - 1938     GOOD             CGS
 JV2209  HISTORY     - 1953     MARK NOT FOUND   CGS
 JV2209
 JV2209                          STATION DESCRIPTION
 JV2209
 JV2209'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2209'0.4 MI NW FROM GERMANTOWN.
 JV2209'0.4 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2209'THE STATION AT GERMANTOWN, MONTGOMERY COUNTY, AT POLE 26+45, 12
 JV2209'FEET NORTHEAST OF THE CENTER LINE OF THE NORTH-BOUND TRACK, AT
 JV2209'A SIGNAL-CONTROL BOX, ON THE SOUTHWEST CORNER OF THE CONCRETE
 JV2209'BASE, AND 1 FOOT ABOVE THE LEVEL OF THE RAILS.  A CHISELED
 JV2209'SQUARE.
 JV2209
 JV2209                          STATION RECOVERY (1953)
 JV2209
 JV2209'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953
 JV2209'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1529 ***********************************************************************
 JU1529  DESIGNATION -  264.0
 JU1529  PID         -  JU1529
 JU1529  STATE/COUNTY-  MD/CECIL
 JU1529  COUNTRY     -  US
 JU1529  USGS QUAD   -  NEWARK WEST (2016)
 JU1529
 JU1529                         *CURRENT SURVEY CONTROL
 JU1529  ______________________________________________________________________
 JU1529* NAD 83(1986) POSITION- 39 39 05.     (N) 075 50 59.     (W)   SCALED
 JU1529* NAVD 88 ORTHO HEIGHT -    60.072 (meters)      197.09  (feet) ADJUSTED
 JU1529  ______________________________________________________________________
 JU1529  GEOID HEIGHT    -        -33.083 (meters)                     GEOID18
 JU1529  DYNAMIC HEIGHT  -         60.043 (meters)      196.99  (feet) COMP
 JU1529  MODELED GRAVITY -    980,140.7   (mgal)                       NAVD 88
 JU1529
 JU1529  VERT ORDER      -  SECOND    CLASS 0
 JU1529
 JU1529.The horizontal coordinates were scaled from a map and have
 JU1529.an estimated accuracy of +/- 6 seconds.
 JU1529
 JU1529.The orthometric height was determined by differential leveling and
 JU1529.adjusted by the NATIONAL GEODETIC SURVEY
 JU1529.in June 1991.
 JU1529
 JU1529.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1529.GEOID18 height accuracy estimate available here.
 JU1529
 JU1529.Click photographs - Photos may exist for this station.
 JU1529
 JU1529.The dynamic height is computed by dividing the NAVD 88
 JU1529.geopotential number by the normal gravity value computed on the
 JU1529.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1529.degrees latitude (g = 980.6199 gals.).
 JU1529
 JU1529.The modeled gravity was interpolated from observed gravity values.
 JU1529
 JU1529;                    North         East    Units  Estimated Accuracy
 JU1529;SPC MD       -   220,950.      498,730.      MT  (+/- 180 meters Scaled)
 JU1529
 JU1529_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ270894(NAD 83)
 JU1529
 JU1529                          SUPERSEDED SURVEY CONTROL
 JU1529
 JU1529  NGVD 29 (??/??/92)   60.390  (m)          198.13   (f) ADJ UNCH    2 0
 JU1529
 JU1529.Superseded values are not recommended for survey control.
 JU1529
 JU1529.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1529.See file dsdata.pdf to determine how the superseded data were derived.
 JU1529
 JU1529_MARKER: X = CHISELED CROSS
 JU1529_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1529_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1529+STABILITY: SURFACE MOTION
 JU1529
 JU1529  HISTORY     - Date     Condition        Report By
 JU1529  HISTORY     - UNK      MONUMENTED       CGS
 JU1529  HISTORY     - 1935     GOOD             CGS
 JU1529  HISTORY     - 1975     MARK NOT FOUND   LOCENG
 JU1529
 JU1529                          STATION DESCRIPTION
 JU1529
 JU1529'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JU1529'AT GREENVILLE.
 JU1529'AT GREENVILLE, NEW CASTLE COUNTY, ON THE READING CO. RAILWAY,
 JU1529'BETWEEN THE TRACK AND U.S. HIGHWAY 322, 48 FEET WEST OF THE
 JU1529'CENTER LINE OF THE HIGHWAY, AND AT A FENCE.  A CHISELED CROSS
 JU1529'ON THE TOP OF A STONE POST.
 JU1529
 JU1529                          STATION RECOVERY (1975)
 JU1529
 JU1529'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1975
 JU1529'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4068 ***********************************************************************
 JV4068  DESIGNATION -  2653 WSSC RESET
 JV4068  PID         -  JV4068
 JV4068  STATE/COUNTY-  MD/MONTGOMERY
 JV4068  COUNTRY     -  US
 JV4068  USGS QUAD   -  ROCKVILLE (2016)
 JV4068
 JV4068                         *CURRENT SURVEY CONTROL
 JV4068  ______________________________________________________________________
 JV4068* NAD 83(1986) POSITION- 39 05 09.     (N) 077 11 56.     (W)   SCALED
 JV4068* NAVD 88 ORTHO HEIGHT -   137.523 (meters)      451.19  (feet) ADJUSTED
 JV4068  ______________________________________________________________________
 JV4068  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV4068  DYNAMIC HEIGHT  -        137.452 (meters)      450.96  (feet) COMP
 JV4068  MODELED GRAVITY -    980,106.4   (mgal)                       NAVD 88
 JV4068
 JV4068  VERT ORDER      -  SECOND    CLASS 0
 JV4068
 JV4068.The horizontal coordinates were scaled from a map and have
 JV4068.an estimated accuracy of +/- 6 seconds.
 JV4068
 JV4068.The orthometric height was determined by differential leveling and
 JV4068.adjusted by the NATIONAL GEODETIC SURVEY
 JV4068.in June 1991.
 JV4068
 JV4068.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4068.GEOID18 height accuracy estimate available here.
 JV4068
 JV4068.Click photographs - Photos may exist for this station.
 JV4068
 JV4068.The dynamic height is computed by dividing the NAVD 88
 JV4068.geopotential number by the normal gravity value computed on the
 JV4068.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV4068.degrees latitude (g = 980.6199 gals.).
 JV4068
 JV4068.The modeled gravity was interpolated from observed gravity values.
 JV4068
 JV4068;                    North         East    Units  Estimated Accuracy
 JV4068;SPC MD       -   157,550.      382,790.      MT  (+/- 180 meters Scaled)
 JV4068
 JV4068_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ098286(NAD 83)
 JV4068
 JV4068                          SUPERSEDED SURVEY CONTROL
 JV4068
 JV4068  NGVD 29 (??/??/??)  138.48   (m)          454.3    (f) RESET       3  
 JV4068
 JV4068.Superseded values are not recommended for survey control.
 JV4068
 JV4068.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4068.See file dsdata.pdf to determine how the superseded data were derived.
 JV4068
 JV4068_MARKER: DB = BENCH MARK DISK
 JV4068_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV4068_SP_SET: BUILDING
 JV4068_STAMPING: 2653 WSSC RESET 1978
 JV4068_MARK LOGO: CGS
 JV4068_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV4068
 JV4068  HISTORY     - Date     Condition        Report By
 JV4068  HISTORY     - 1978     MONUMENTED       NGS
 JV4068  HISTORY     - 19941014 GOOD             USPSQD
 JV4068
 JV4068                          STATION DESCRIPTION
 JV4068
 JV4068'DESCRIBED BY NATIONAL GEODETIC SURVEY 1978
 JV4068'2.75 MI NW FROM ROCKVILLE.
 JV4068'LOCATED IN THE FW CORNER OF THE FOUNDATION FOR THE ROCKVILLE FIRE
 JV4068'DEPARTMENT ENGINE CO. 31 BUILDING WHICH IS 2.75 MILES NW ALONG STATE
 JV4068'HIGHWAY 28 FROM THE COURTHOUSE IN ROCKVILLE, 69 FT E OF THE CENTER
 JV4068'OF STATE HIGHWAY 28, 2.4 FT SW OF THE NW CORNER OF THE FOUNDATION
 JV4068'2.1 FT NE OF THE NW CORNER OF THE FIRE STATION BUILDING, 1.9 FT
 JV4068'E OF THE W EDGE OF THE FOUNDATION AND 1.5 FT S OF THE N EDGE.
 JV4068
 JV4068                          STATION RECOVERY (1994)
 JV4068
 JV4068'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV4068'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3190 ***********************************************************************
 JV3190  DESIGNATION -  266
 JV3190  PID         -  JV3190
 JV3190  STATE/COUNTY-  MD/FREDERICK
 JV3190  COUNTRY     -  US
 JV3190  USGS QUAD   -  HARPERS FERRY (2016)
 JV3190
 JV3190                         *CURRENT SURVEY CONTROL
 JV3190  ______________________________________________________________________
 JV3190* NAD 83(1986) POSITION- 39 18 48.     (N) 077 37 33.     (W)   SCALED
 JV3190* NAVD 88 ORTHO HEIGHT -    80.646 (meters)      264.59  (feet) ADJUSTED
 JV3190  ______________________________________________________________________
 JV3190  GEOID HEIGHT    -        -33.055 (meters)                     GEOID18
 JV3190  DYNAMIC HEIGHT  -         80.601 (meters)      264.44  (feet) COMP
 JV3190  MODELED GRAVITY -    980,072.1   (mgal)                       NAVD 88
 JV3190
 JV3190  VERT ORDER      -  FIRST     CLASS II
 JV3190
 JV3190.The horizontal coordinates were scaled from a map and have
 JV3190.an estimated accuracy of +/- 6 seconds.
 JV3190
 JV3190.The orthometric height was determined by differential leveling and
 JV3190.adjusted by the NATIONAL GEODETIC SURVEY
 JV3190.in June 1991.
 JV3190
 JV3190.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3190.GEOID18 height accuracy estimate available here.
 JV3190
 JV3190.Click photographs - Photos may exist for this station.
 JV3190
 JV3190.The dynamic height is computed by dividing the NAVD 88
 JV3190.geopotential number by the normal gravity value computed on the
 JV3190.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3190.degrees latitude (g = 980.6199 gals.).
 JV3190
 JV3190.The modeled gravity was interpolated from observed gravity values.
 JV3190
 JV3190;                    North         East    Units  Estimated Accuracy
 JV3190;SPC MD       -   182,980.      346,030.      MT  (+/- 180 meters Scaled)
 JV3190
 JV3190_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ736548(NAD 83)
 JV3190
 JV3190                          SUPERSEDED SURVEY CONTROL
 JV3190
 JV3190  NGVD 29 (11/26/84)   80.858  (m)          265.28   (f) ADJUSTED    1 2
 JV3190
 JV3190.Superseded values are not recommended for survey control.
 JV3190
 JV3190.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3190.See file dsdata.pdf to determine how the superseded data were derived.
 JV3190
 JV3190_MARKER: DD = SURVEY DISK
 JV3190_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3190_SP_SET: BUILDING
 JV3190_STAMPING: MARYLAND 266 ADJ
 JV3190_MARK LOGO: USGS
 JV3190_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3190
 JV3190  HISTORY     - Date     Condition        Report By
 JV3190  HISTORY     - 1907     MONUMENTED       USGS
 JV3190  HISTORY     - 1938     GOOD             CGS
 JV3190
 JV3190                          STATION DESCRIPTION
 JV3190
 JV3190'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV3190'AT BRUNSWICK.
 JV3190'AT BRUNSWICK SET VERTICALLY IN THE EAST WALL OF A 25 FT SQUARE
 JV3190'BRICK, COLUMN IN FRONT OF DOOR OF THE BANK OF BRUNSWICK, CORNER
 JV3190'OF POTOMAC ST. AND PETERVILLE RD.  2 FT NORTH OF THE SOUTH SIDE
 JV3190'OF THE COLUMN (POTOMAC ST.) ON THE E FACE OF THIS COLUMN 1.5
 JV3190'FT SOUTH OF THE PETERVILLE RD. ENTRANCE TO THE BANK.  1.5 FT ABOVE
 JV3190'THE SIDEWALK.  ALL REFERENCE TO THE POST OFFICE SHOULD BE DELETED
 JV3190'AS IT IS SEVERAL BLOCKS EAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3191 ***********************************************************************
 JV3191  DESIGNATION -  266 RESET
 JV3191  PID         -  JV3191
 JV3191  STATE/COUNTY-  MD/FREDERICK
 JV3191  COUNTRY     -  US
 JV3191  USGS QUAD   -  HARPERS FERRY (2016)
 JV3191
 JV3191                         *CURRENT SURVEY CONTROL
 JV3191  ______________________________________________________________________
 JV3191* NAD 83(1986) POSITION- 39 18 46.70   (N) 077 37 36.99   (W)   HD_HELD1
 JV3191* NAVD 88 ORTHO HEIGHT -    80.922 (meters)      265.49  (feet) ADJUSTED
 JV3191  ______________________________________________________________________
 JV3191  GEOID HEIGHT    -        -33.058 (meters)                     GEOID18
 JV3191  DYNAMIC HEIGHT  -         80.877 (meters)      265.34  (feet) COMP
 JV3191  MODELED GRAVITY -    980,072.0   (mgal)                       NAVD 88
 JV3191
 JV3191  VERT ORDER      -  FIRST     CLASS II
 JV3191
 JV3191.The horizontal coordinates were determined by differentially corrected
 JV3191.hand held GPS observations or other comparable positioning techniques
 JV3191.and have an estimated accuracy of +/- 3 meters.
 JV3191
 JV3191.The orthometric height was determined by differential leveling and
 JV3191.adjusted by the NATIONAL GEODETIC SURVEY
 JV3191.in June 1991.
 JV3191
 JV3191.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3191.GEOID18 height accuracy estimate available here.
 JV3191
 JV3191.Click photographs - Photos may exist for this station.
 JV3191
 JV3191.The dynamic height is computed by dividing the NAVD 88
 JV3191.geopotential number by the normal gravity value computed on the
 JV3191.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3191.degrees latitude (g = 980.6199 gals.).
 JV3191
 JV3191.The modeled gravity was interpolated from observed gravity values.
 JV3191
 JV3191;                    North         East    Units  Estimated Accuracy
 JV3191;SPC MD       -   182,936.3     345,931.9     MT  (+/- 3 meters HH1 GPS) 
 JV3191
 JV3191_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7351854799(NAD 83)
 JV3191
 JV3191                          SUPERSEDED SURVEY CONTROL
 JV3191
 JV3191  NGVD 29 (??/??/??)   81.13   (m)          266.2    (f) RESET       3  
 JV3191
 JV3191.Superseded values are not recommended for survey control.
 JV3191
 JV3191.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3191.See file dsdata.pdf to determine how the superseded data were derived.
 JV3191
 JV3191_MARKER: DB = BENCH MARK DISK
 JV3191_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3191_SP_SET: BUILDING
 JV3191_STAMPING: MARYLAND 266 ADJ RESET 1956
 JV3191_MARK LOGO: USGS
 JV3191_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3191_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3191+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2019
 JV3191
 JV3191  HISTORY     - Date     Condition        Report By
 JV3191  HISTORY     - 1956     MONUMENTED       USGS
 JV3191  HISTORY     - 1957     GOOD             CGS
 JV3191  HISTORY     - 1979     GOOD             NGS
 JV3191  HISTORY     - 20031212 GOOD             GEOCAC
 JV3191  HISTORY     - 20050611 GOOD             GEOCAC
 JV3191  HISTORY     - 20060527 GOOD             GEOCAC
 JV3191  HISTORY     - 20090614 GOOD             GEOCAC
 JV3191  HISTORY     - 20110724 GOOD             GEOCAC
 JV3191  HISTORY     - 20190605 GOOD             NGS
 JV3191
 JV3191                          STATION DESCRIPTION
 JV3191
 JV3191'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV3191'AT BRUNSWICK.
 JV3191'AT BRUNSWICK IN THE SOUTHEAST CORNER OF NEW BANK OF BRUNSWICK.
 JV3191
 JV3191                          STATION RECOVERY (1979)
 JV3191
 JV3191'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3191'RECOVERED IN GOOD CONDITION.
 JV3191
 JV3191                          STATION RECOVERY (2003)
 JV3191
 JV3191'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV3191'FORMER BANK BUILDING IS NOW THE BRUNSWICK CITY HALL AT THE CORNER OF
 JV3191'MAPLE AVE. AND EAST POTOMAC. DISK IS PARTIALLY OBSCURED BY A DOWNSPOUT
 JV3191'AND IS BETWEEN THE BUILDING CORNER AND THE NIGHT DEPOSITORY.
 JV3191'
 JV3191'STAMPING LINE ON DATASHEET IS INCORRECT. IT SHOULD READ 'MARYLAND 266
 JV3191'ADJ RESET 1956.'
 JV3191
 JV3191                          STATION RECOVERY (2005)
 JV3191
 JV3191'RECOVERY NOTE BY GEOCACHING 2005 (LWB)
 JV3191'RECOVERED IN GOOD CONDITION, ADDITIONAL DESCRIPTIVE TEXT.
 JV3191'BUILDING IS NOW BRUNSWICK CITY HALL, LOCATED IN THE NORTHWEST CORNER
 JV3191'OF THE INTERSECTION OF MAPLE AVE AND EAST POTOMAC STREET.  MARK IS
 JV3191'PARTIALLY OBSCURED BY A DOWNSPOUT, AND IS ABOUT TWO FEET FROM A NIGHT
 JV3191'DEPOSIT DRAWER.
 JV3191
 JV3191                          STATION RECOVERY (2006)
 JV3191
 JV3191'RECOVERY NOTE BY GEOCACHING 2006 (KAG)
 JV3191'BUILDING IS NOW THE BRUNSWICK CITY HALL. DISK IS PARTIALLY OBSCURED BY
 JV3191'A DOWNSPOUT AND IS TO THE LEFT OF THE NIGHT DEPOSITORY. SET VERTICALLY
 JV3191'ON THE WALL FACING EAST MAPLE STREET.
 JV3191
 JV3191                          STATION RECOVERY (2009)
 JV3191
 JV3191'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 JV3191'PARTIALLY HIDDEN BY DRAINPIPE.
 JV3191
 JV3191                          STATION RECOVERY (2011)
 JV3191
 JV3191'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JV3191'RECOVERED AS DESCRIBED.
 JV3191
 JV3191                          STATION RECOVERY (2019)
 JV3191
 JV3191'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (JH)
 JV3191'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7816 ***********************************************************************
 DR7816  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7816  DESIGNATION -  27
 DR7816  PID         -  DR7816
 DR7816  STATE/COUNTY-  MD/QUEEN ANNES
 DR7816  COUNTRY     -  US
 DR7816  USGS QUAD   -  SUDLERSVILLE (2017)
 DR7816
 DR7816                         *CURRENT SURVEY CONTROL
 DR7816  ______________________________________________________________________
 DR7816* NAD 83(2011) POSITION- 39 07 36.93551(N) 075 51 59.12761(W)   ADJUSTED
 DR7816* NAD 83(2011) ELLIP HT-   -11.507 (meters)        (02/02/22)   ADJUSTED
 DR7816* NAD 83(2011) EPOCH   -  2010.00
 DR7816* NAVD 88 ORTHO HEIGHT -    22.41  (meters)       73.5   (feet) GPS OBS
 DR7816  ______________________________________________________________________
 DR7816  GEOID HEIGHT    -        -33.919 (meters)                     GEOID18
 DR7816  NAD 83(2011) X  -  1,209,791.259 (meters)                     COMP
 DR7816  NAD 83(2011) Y  - -4,804,463.190 (meters)                     COMP
 DR7816  NAD 83(2011) Z  -  4,003,250.665 (meters)                     COMP
 DR7816  LAPLACE CORR    -         -3.77  (seconds)                    DEFLEC18
 DR7816
 DR7816  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7816  Standards:
 DR7816         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7816            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7816  -------------------------------------------------------------------
 DR7816  NETWORK    0.74   1.63           0.33   0.27   0.83     -0.18385524
 DR7816  -------------------------------------------------------------------
 DR7816  Click here for local accuracies and other accuracy information.
 DR7816
 DR7816.The horizontal coordinates were established by GPS observations
 DR7816.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7816
 DR7816.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7816.been affixed to the stable North American tectonic plate. See 
 DR7816.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7816
 DR7816.The horizontal coordinates are valid at the epoch date displayed above
 DR7816.which is a decimal equivalence of Year/Month/Day.
 DR7816
 DR7816.The orthometric height was determined by GPS observations and a
 DR7816.high-resolution geoid model using precise GPS observation and
 DR7816.processing techniques.
 DR7816
 DR7816.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7816.GEOID18 height accuracy estimate available here.
 DR7816
 DR7816.Click photographs - Photos may exist for this station.
 DR7816
 DR7816.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7816
 DR7816.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7816
 DR7816.The ellipsoidal height was determined by GPS observations
 DR7816.and is referenced to NAD 83.
 DR7816
 DR7816. The following values were computed from the NAD 83(2011) position.
 DR7816
 DR7816;                    North         East     Units Scale Factor Converg.
 DR7816;SPC MD       -   162,705.104   498,015.403   MT  0.99995943   +0 42 41.3
 DR7816;SPC MD       -   533,808.33  1,633,905.53   sFT  0.99995943   +0 42 41.3
 DR7816;UTM  18      - 4,331,219.254   425,108.437   MT  0.99966906   -0 32 48.4
 DR7816
 DR7816!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7816!SPC MD       -   1.00000181  x   0.99995943  =   0.99996124
 DR7816!UTM  18      -   1.00000181  x   0.99966906  =   0.99967086
 DR7816
 DR7816_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2510831219(NAD 83)
 DR7816
 DR7816                          SUPERSEDED SURVEY CONTROL
 DR7816
 DR7816.No superseded survey control is available for this station.
 DR7816
 DR7816_MARKER: DD = SURVEY DISK
 DR7816_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7816_STAMPING: 27
 DR7816_MARK LOGO: MD-035
 DR7816_PROJECTION: RECESSED 9 CENTIMETERS
 DR7816_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7816+STABILITY: SURFACE MOTION
 DR7816_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7816+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7816
 DR7816  HISTORY     - Date     Condition        Report By
 DR7816  HISTORY     - UNK      MONUMENTED       MD-035
 DR7816  HISTORY     - 20210309 GOOD             MDSHA
 DR7816
 DR7816                          STATION DESCRIPTION
 DR7816
 DR7816'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7816'THE MARK IS LOCATED ABOUT 4.2 MI (6.8 KM) SOUTH OF SUDLERSVILLE, 2.5
 DR7816'MI (4.0 KM) NORTH-NORTHEAST OF INGLESIDE AND 1.2 MI (1.9 KM) SOUTH OF
 DR7816'BARCLAY.
 DR7816'
 DR7816'TO REACH FROM THE JUNCTION OF US 301 AND MD 302, GO EAST ON MD 302 FOR
 DR7816'3.46 MI (5.57 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DR7816'SOUTH-SOUTHEAST ON MD 313 (GOLDSBORO ROAD) FOR 1.24 MI (2.00 KM) TO
 DR7816'THE MARK ON THE RIGHT.
 DR7816'
 DR7816'THE MARK IS 127.9 FT (39.0 M) EAST-NORTHEAST OF A UTILITY POLE
 DR7816'NUMBERED 31-87-12, 103.1 FT (31.4 M) SOUTH-SOUTHEAST OF THE NORTH EAST
 DR7816'END OF A 24 INCH (61 CM) PIPE CULVERT RUNNING BENEATH THE DRIVEWAY AT
 DR7816'1806 GOLDSBORO ROAD, 85.7 FT (26.1 M) SOUTH-SOUTHEAST OF THE SOUTH
 DR7816'EAST END OF A 24-INCH (61 CM) PIPE CULVERT RUNNING BENEATH THE
 DR7816'DRIVEWAY AT 1806 GOLDSBORO ROAD, 40.7 FT (12.4 M) EAST-SOUTHEAST OF
 DR7816'THE CENTERLINE OF STATE ROUTE MD 313 (GOLDSBORO ROAD), 2.9 FT (0.9 M)
 DR7816'NORTH-NORTHEAST OF A BELL ATLANTIC FIBER OPTIC PEDESTAL NUMBERED 374
 DR7816'AND SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0631 ***********************************************************************
 JV0631  DESIGNATION -  27 BORR
 JV0631  PID         -  JV0631
 JV0631  STATE/COUNTY-  MD/HOWARD
 JV0631  COUNTRY     -  US
 JV0631  USGS QUAD   -  RELAY (2016)
 JV0631
 JV0631                         *CURRENT SURVEY CONTROL
 JV0631  ______________________________________________________________________
 JV0631* NAD 83(1986) POSITION- 39 10 52.     (N) 076 44 44.     (W)   SCALED
 JV0631* NAVD 88 ORTHO HEIGHT -    35.399 (meters)      116.14  (feet) ADJUSTED
 JV0631  ______________________________________________________________________
 JV0631  GEOID HEIGHT    -        -32.470 (meters)                     GEOID18
 JV0631  DYNAMIC HEIGHT  -         35.380 (meters)      116.08  (feet) COMP
 JV0631  MODELED GRAVITY -    980,093.4   (mgal)                       NAVD 88
 JV0631
 JV0631  VERT ORDER      -  FIRST     CLASS II
 JV0631
 JV0631.The horizontal coordinates were scaled from a map and have
 JV0631.an estimated accuracy of +/- 6 seconds.
 JV0631
 JV0631.The orthometric height was determined by differential leveling and
 JV0631.adjusted by the NATIONAL GEODETIC SURVEY
 JV0631.in June 1991.
 JV0631
 JV0631.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0631.GEOID18 height accuracy estimate available here.
 JV0631
 JV0631.Click photographs - Photos may exist for this station.
 JV0631
 JV0631.The dynamic height is computed by dividing the NAVD 88
 JV0631.geopotential number by the normal gravity value computed on the
 JV0631.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0631.degrees latitude (g = 980.6199 gals.).
 JV0631
 JV0631.The modeled gravity was interpolated from observed gravity values.
 JV0631
 JV0631;                    North         East    Units  Estimated Accuracy
 JV0631;SPC MD       -   168,140.      421,980.      MT  (+/- 180 meters Scaled)
 JV0631
 JV0631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ492383(NAD 83)
 JV0631
 JV0631                          SUPERSEDED SURVEY CONTROL
 JV0631
 JV0631  NGVD 29 (11/26/84)   35.610  (m)          116.83   (f) ADJUSTED    1 2
 JV0631
 JV0631.Superseded values are not recommended for survey control.
 JV0631
 JV0631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0631.See file dsdata.pdf to determine how the superseded data were derived.
 JV0631
 JV0631_MARKER: B = BOLT
 JV0631_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0631_SP_SET: WINGWALL STEP
 JV0631_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0631
 JV0631  HISTORY     - Date     Condition        Report By
 JV0631  HISTORY     - 1903     MONUMENTED       BORR
 JV0631  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0631
 JV0631                          STATION DESCRIPTION
 JV0631
 JV0631'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0631'0.2 MI NE FROM DORSEY.
 JV0631'0.2 MILE NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV0631'DORSEY, HOWARD COUNTY, AT THE BRIDGE OVER DEEP RUN, IN THE TOP
 JV0631'STEP OF THE SOUTHWEST WING WALL, 7 FEET WEST OF THE WEST RAIL,
 JV0631'AND LEVEL WITH THE BASE OF THE RAIL.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1544 ***********************************************************************
 JV1544  DESIGNATION -  27 PRR
 JV1544  PID         -  JV1544
 JV1544  STATE/COUNTY-  MD/BALTIMORE
 JV1544  COUNTRY     -  US
 JV1544  USGS QUAD   -  PHOENIX (2016)
 JV1544
 JV1544                         *CURRENT SURVEY CONTROL
 JV1544  ______________________________________________________________________
 JV1544* NAD 83(1986) POSITION- 39 36 04.1    (N) 076 37 25.6    (W)   HD_HELD2
 JV1544* NAVD 88 ORTHO HEIGHT -    96.505 (meters)      316.62  (feet) ADJUSTED
 JV1544  ______________________________________________________________________
 JV1544  GEOID HEIGHT    -        -32.334 (meters)                     GEOID18
 JV1544  DYNAMIC HEIGHT  -         96.457 (meters)      316.46  (feet) COMP
 JV1544  MODELED GRAVITY -    980,128.6   (mgal)                       NAVD 88
 JV1544
 JV1544  VERT ORDER      -  SECOND    CLASS 0
 JV1544
 JV1544.The horizontal coordinates were established by autonomous hand held GPS
 JV1544.observations and have an estimated accuracy of +/- 10 meters.
 JV1544
 JV1544.The orthometric height was determined by differential leveling and
 JV1544.adjusted by the NATIONAL GEODETIC SURVEY
 JV1544.in June 1991.
 JV1544
 JV1544.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1544.GEOID18 height accuracy estimate available here.
 JV1544
 JV1544.Click photographs - Photos may exist for this station.
 JV1544
 JV1544.The dynamic height is computed by dividing the NAVD 88
 JV1544.geopotential number by the normal gravity value computed on the
 JV1544.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1544.degrees latitude (g = 980.6199 gals.).
 JV1544
 JV1544.The modeled gravity was interpolated from observed gravity values.
 JV1544
 JV1544;                    North         East    Units  Estimated Accuracy
 JV1544;SPC MD       -   214,811.      432,314.      MT  (+/- 10 meters HH2 GPS)
 JV1544
 JV1544_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6058884748(NAD 83)
 JV1544
 JV1544                          SUPERSEDED SURVEY CONTROL
 JV1544
 JV1544  NGVD 29 (11/26/84)   96.736  (m)          317.37   (f) ADJUSTED    2 0
 JV1544
 JV1544.Superseded values are not recommended for survey control.
 JV1544
 JV1544.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1544.See file dsdata.pdf to determine how the superseded data were derived.
 JV1544
 JV1544_MARKER: B = BOLT
 JV1544_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1544_SP_SET: RAILROAD BRIDGE ABUTMENT
 JV1544_MARK LOGO: NONE
 JV1544_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1544_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1544_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1544+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2004
 JV1544
 JV1544  HISTORY     - Date     Condition        Report By
 JV1544  HISTORY     - UNK      MONUMENTED       PRR
 JV1544  HISTORY     - 1935     GOOD             CGS
 JV1544  HISTORY     - 19970626 GOOD             MD-005
 JV1544  HISTORY     - 20041129 GOOD             GEOCAC
 JV1544
 JV1544                          STATION DESCRIPTION
 JV1544
 JV1544'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1544'AT BLUE MOUNT.
 JV1544'AT BLUE MOUNT, BALTIMORE COUNTY, ABOUT 700 FEET SOUTH OF THE
 JV1544'PENNSYLVANIA RAILROAD STATION, IN THE TOP OF THE SOUTHEAST END
 JV1544'OF BRIDGE 24.87, AND 15 FEET EAST OF THE CENTERLINE OF THE EAST
 JV1544'TRACK.  A COPPER BOLT.
 JV1544
 JV1544                          STATION RECOVERY (1997)
 JV1544
 JV1544'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV1544'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) . STATION
 JV1544'IS ABOUT 4.2 MILES (6.8 KM) SOUTH-SOUTHEAST OF PARKTON AND 2.2 MILES
 JV1544'(3.5 KM) EAST-NORTHEAST OF HEREFORD ALONG THE OLD PENNSYLVANIA
 JV1544'RAILWAY, NOW THE GUNPOWDER STATE PARK TRAIL.  TO REACH THE STATION
 JV1544'FROM THE ROUTE 137 (MOUNT CARMEL ROAD) OVERPASS OF INTERSTATE 83 AT
 JV1544'EXIT 27, GO EAST ON ROUTE 137 FOR 0.4 MILES (0.6 KM) TO THE TEE
 JV1544'INTERSECTION WITH ROUTE 45 (YORK ROAD) .  TURN RIGHT AND GO SOUTH ON
 JV1544'ROUTE 45 FOR 0.1 MILES (0.2 KM) TO THE INTERSECTION WITH ROUTE 138
 JV1544'(MONKTON ROAD) ON THE LEFT.  TURN LEFT AND GO EAST ON ROUTE 138 FOR
 JV1544'1.1 MILES (1.8 KM) TO THE INTERSECTION WITH BLUE MOUNT ROAD ON THE
 JV1544'LEFT.  TURN LEFT AND GO NORTHEAST ON BLUEMOUNT ROAD FOR 1.4 MILES (2.3
 JV1544'KM) TO THE GUNPOWDER STATE PARK TRAIL CROSSING AT THE OLD BLUE MOUNT
 JV1544'STATION.  STATION IS LOCATED ABOUT 700 FEET (213.4 M) SOUTHWEST ALONG
 JV1544'THE BIKE TRAIL ON THE SOUTHEAST BRIDGE ABUTMENT WALL OF RAILROAD
 JV1544'BRIDGE 24.87 OVER THE LITTLE FALLS.  STATION MARK IS A 1 1/2 INCH
 JV1544'COPPER BOLT SET FLUSH WITH THE TOP ABUTMENT WALL.
 JV1544
 JV1544                          STATION RECOVERY (2004)
 JV1544
 JV1544'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV1544'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4412 ***********************************************************************
 AI4412  DESIGNATION -  27 PRR ECC
 AI4412  PID         -  AI4412
 AI4412  STATE/COUNTY-  MD/BALTIMORE
 AI4412  COUNTRY     -  US
 AI4412  USGS QUAD   -  PHOENIX (2016)
 AI4412
 AI4412                         *CURRENT SURVEY CONTROL
 AI4412  ______________________________________________________________________
 AI4412* NAD 83(2011) POSITION- 39 36 04.32134(N) 076 37 25.21922(W)   ADJUSTED
 AI4412* NAD 83(2011) ELLIP HT-    64.192 (meters)        (06/27/12)   ADJUSTED
 AI4412* NAD 83(2011) EPOCH   -  2010.00
 AI4412* NAVD 88 ORTHO HEIGHT -    96.53  (meters)      316.7   (feet) LEVELING
 AI4412  ______________________________________________________________________
 AI4412  GEOID HEIGHT    -        -32.334 (meters)                     GEOID18
 AI4412  NAD 83(2011) X  -  1,138,476.874 (meters)                     COMP
 AI4412  NAD 83(2011) Y  - -4,787,598.933 (meters)                     COMP
 AI4412  NAD 83(2011) Z  -  4,044,007.998 (meters)                     COMP
 AI4412  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 AI4412  VERT ORDER      -  THIRD ?
 AI4412
 AI4412  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4412  Standards:
 AI4412         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4412            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4412  -------------------------------------------------------------------
 AI4412  NETWORK    0.69   1.08           0.31   0.25   0.55     -0.08025939
 AI4412  -------------------------------------------------------------------
 AI4412  Click here for local accuracies and other accuracy information.
 AI4412
 AI4412.The horizontal coordinates were established by GPS observations
 AI4412.and adjusted by the National Geodetic Survey in June 2012.
 AI4412
 AI4412.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4412.been affixed to the stable North American tectonic plate. See 
 AI4412.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4412
 AI4412.The horizontal coordinates are valid at the epoch date displayed above
 AI4412.which is a decimal equivalence of Year/Month/Day.
 AI4412
 AI4412.The orthometric height was determined by differential leveling.
 AI4412.The vertical network tie was performed by a horz. field party for horz.
 AI4412.obs reductions. Reset procedures were used to establish the elevation.
 AI4412
 AI4412.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4412.GEOID18 height accuracy estimate available here.
 AI4412
 AI4412.Click photographs - Photos may exist for this station.
 AI4412
 AI4412.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4412
 AI4412.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4412
 AI4412.The ellipsoidal height was determined by GPS observations
 AI4412.and is referenced to NAD 83.
 AI4412
 AI4412. The following values were computed from the NAD 83(2011) position.
 AI4412
 AI4412;                    North         East     Units Scale Factor Converg.
 AI4412;SPC MD       -   214,817.625   432,323.142   MT  1.00002995   +0 14 10.3
 AI4412;SPC MD       -   704,780.82  1,418,380.18   sFT  1.00002995   +0 14 10.3
 AI4412;UTM  18      - 4,384,755.160   360,597.412   MT  0.99983926   -1 02 06.6
 AI4412
 AI4412!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4412!SPC MD       -   0.99998993  x   1.00002995  =   1.00001988
 AI4412!UTM  18      -   0.99998993  x   0.99983926  =   0.99982919
 AI4412
 AI4412_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6059784755(NAD 83)
 AI4412
 AI4412                          SUPERSEDED SURVEY CONTROL
 AI4412
 AI4412  NAD 83(2007)-  39 36 04.32154(N)    076 37 25.21985(W) AD(2002.00) 0
 AI4412  ELLIP H (02/10/07)   64.214  (m)                       GP(2002.00)    
 AI4412  ELLIP H (08/30/02)   64.218  (m)                       GP(       ) 4 2
 AI4412  NAD 83(1991)-  39 36 04.32192(N)    076 37 25.21964(W) AD(       ) 1
 AI4412  ELLIP H (03/31/00)   64.150  (m)                       GP(       ) 3 1
 AI4412
 AI4412.Superseded values are not recommended for survey control.
 AI4412
 AI4412.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4412.See file dsdata.pdf to determine how the superseded data were derived.
 AI4412
 AI4412_MARKER: N = NAIL
 AI4412_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 AI4412_MARK LOGO: NONE
 AI4412_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI4412_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI4412_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4412+SATELLITE: SATELLITE OBSERVATIONS - 1997
 AI4412
 AI4412  HISTORY     - Date     Condition        Report By
 AI4412  HISTORY     - 1997     MONUMENTED       MD-005
 AI4412  HISTORY     - 20211229 MARK NOT FOUND   MD-005
 AI4412
 AI4412                          STATION DESCRIPTION
 AI4412
 AI4412'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4412'DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) . STATION
 AI4412'IS ABOUT 4.2 MILES (6.8 KM) SOUTH-SOUTHEAST OF PARKTON AND 2.2 MILES
 AI4412'(3.5 KM) EAST-NORTHEAST OF HEREFORD ALONG THE OLD PENNSYLVANIA
 AI4412'RAILWAY, NOW THE GUNPOWDER STATE PARK TRAIL.  TO REACH THE STATION
 AI4412'FROM THE ROUTE 137 (MOUNT CARMEL ROAD) OVERPASS OF INTERSTATE 83 AT
 AI4412'EXIT 27, GO EAST ON ROUTE 137 FOR 0.4 MILES (0.6 KM) TO THE TEE
 AI4412'INTERSECTION WITH ROUTE 45 (YORK ROAD) .  TURN RIGHT AND GO SOUTH ON
 AI4412'ROUTE 45 FOR 0.1 MILES (0.2 KM) TO THE INTERSECTION WITH ROUTE 138
 AI4412'(MONKTON ROAD) ON THE LEFT.  TURN LEFT AND GO EAST ON ROUTE 138 FOR
 AI4412'1.1 MILES (1.8 KM) TO THE INTERSECTION WITH BLUE MOUNT ROAD ON THE
 AI4412'LEFT.  TURN LEFT AND GO NORTHEAST ON BLUEMOUNT ROAD FOR 1.4 MILES (2.3
 AI4412'KM) TO THE GUNPOWDER STATE PARK TRAIL CROSSING AT THE OLD BLUE MOUNT
 AI4412'STATION.  STATION IS LOCATED ABOUT 700 FEET (213.4 M) SOUTHWEST ALONG
 AI4412'THE BIKE TRAIL AT THE CENTER OF THE RAILROAD BRIDGE NUMBER 24.87 OVER
 AI4412'THE LITTLE FALLS.  STATION MARK IS A 20 PENNY NAIL SET FLUSH WITH THE
 AI4412'PACKED STONE NEAR THE CENTER OF THE BRIDGE DECK. IT IS 16.9 FEET (5.2
 AI4412'M) SOUTHEAST OF THE 5TH VERTICAL METAL RAIL FROM NORTH END OF THE WEST
 AI4412'SIDE OF THE BRIDGE, 13.4 FEET (4.1 M) FROM THE 6TH VERTICAL METAL RAIL
 AI4412'FROM THE NORTH END OF THE EAST SIDE OF THE BRIDGE, AND 43.5 FEET (13.3
 AI4412'M) NORTH FROM BENCH MARK BOLT JV1544, 27 PRR.
 AI4412
 AI4412                          STATION RECOVERY (2021)
 AI4412
 AI4412'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2021 (JG)
 AI4412'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2211 ***********************************************************************
 JV2211  DESIGNATION -  27+22 BORR
 JV2211  PID         -  JV2211
 JV2211  STATE/COUNTY-  MD/MONTGOMERY
 JV2211  COUNTRY     -  US
 JV2211  USGS QUAD   -  GERMANTOWN (2016)
 JV2211
 JV2211                         *CURRENT SURVEY CONTROL
 JV2211  ______________________________________________________________________
 JV2211* NAD 83(1986) POSITION- 39 10 45.     (N) 077 17 13.     (W)   SCALED
 JV2211* NAVD 88 ORTHO HEIGHT -   132.21  (+/-2cm)      433.8   (feet) VERTCON3
 JV2211  ______________________________________________________________________
 JV2211  GEOID HEIGHT    -        -31.869 (meters)                     GEOID18
 JV2211  VERT ORDER      -  ? (See Below)
 JV2211
 JV2211.The horizontal coordinates were scaled from a map and have
 JV2211.an estimated accuracy of +/- 6 seconds.
 JV2211
 JV2211.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2211.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2211
 JV2211.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2211.GEOID18 height accuracy estimate available here.
 JV2211
 JV2211.The vertical order pertains to the NGVD 29 superseded value.
 JV2211
 JV2211.Click photographs - Photos may exist for this station.
 JV2211
 JV2211;                    North         East    Units  Estimated Accuracy
 JV2211;SPC MD       -   167,940.      375,210.      MT  (+/- 180 meters Scaled)
 JV2211
 JV2211_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ024391(NAD 83)
 JV2211
 JV2211                          SUPERSEDED SURVEY CONTROL
 JV2211
 JV2211  NGVD 29 (11/26/84)  132.414  (m)          434.43   (f) ADJUSTED       
 JV2211
 JV2211.Superseded values are not recommended for survey control.
 JV2211
 JV2211.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2211.See file dsdata.pdf to determine how the superseded data were derived.
 JV2211
 JV2211_MARKER: Q = CHISELED SQUARE
 JV2211_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2211_SP_SET: SIGNAL BASE
 JV2211_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2211
 JV2211  HISTORY     - Date     Condition        Report By
 JV2211  HISTORY     - UNK      MONUMENTED       BORR
 JV2211  HISTORY     - 1938     GOOD             CGS
 JV2211
 JV2211                          STATION DESCRIPTION
 JV2211
 JV2211'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2211'0.9 MI NW FROM GERMANTOWN.
 JV2211'0.9 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2211'THE STATION AT GERMANTOWN, MONTGOMERY COUNTY, AT SIGNAL W 27+22,
 JV2211'ON THE SOUTHWEST CORNER OF THE CONCRETE BASE, 9 FEET NORTHEAST
 JV2211'OF THE CENTER LINE OF THE NORTH-BOUND TRACK, ACROSS THE TRACK
 JV2211'FROM BENCH MARK S 34 DESCRIBED ABOVE, AND 8 INCHES ABOVE THE
 JV2211'LEVEL OF THE RAILS.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2212 ***********************************************************************
 JV2212  DESIGNATION -  27+50 BORR
 JV2212  PID         -  JV2212
 JV2212  STATE/COUNTY-  MD/MONTGOMERY
 JV2212  COUNTRY     -  US
 JV2212  USGS QUAD   -  GERMANTOWN (2016)
 JV2212
 JV2212                         *CURRENT SURVEY CONTROL
 JV2212  ______________________________________________________________________
 JV2212* NAD 83(1986) POSITION- 39 10 56.     (N) 077 17 45.     (W)   SCALED
 JV2212* NAVD 88 ORTHO HEIGHT -   125.28  (+/-2cm)      411.0   (feet) VERTCON3
 JV2212  ______________________________________________________________________
 JV2212  GEOID HEIGHT    -        -31.888 (meters)                     GEOID18
 JV2212  VERT ORDER      -  ? (See Below)
 JV2212
 JV2212.The horizontal coordinates were scaled from a map and have
 JV2212.an estimated accuracy of +/- 6 seconds.
 JV2212
 JV2212.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2212.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2212
 JV2212.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2212.GEOID18 height accuracy estimate available here.
 JV2212
 JV2212.The vertical order pertains to the NGVD 29 superseded value.
 JV2212
 JV2212.Click photographs - Photos may exist for this station.
 JV2212
 JV2212;                    North         East    Units  Estimated Accuracy
 JV2212;SPC MD       -   168,280.      374,440.      MT  (+/- 180 meters Scaled)
 JV2212
 JV2212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ016395(NAD 83)
 JV2212
 JV2212                          SUPERSEDED SURVEY CONTROL
 JV2212
 JV2212  NGVD 29 (11/26/84)  125.490  (m)          411.71   (f) ADJUSTED       
 JV2212
 JV2212.Superseded values are not recommended for survey control.
 JV2212
 JV2212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2212.See file dsdata.pdf to determine how the superseded data were derived.
 JV2212
 JV2212_MARKER: Q = CHISELED SQUARE
 JV2212_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2212_SP_SET: TELEPHONE BOX
 JV2212_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2212
 JV2212  HISTORY     - Date     Condition        Report By
 JV2212  HISTORY     - UNK      MONUMENTED       BORR
 JV2212  HISTORY     - 1938     GOOD             CGS
 JV2212
 JV2212                          STATION DESCRIPTION
 JV2212
 JV2212'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2212'1 MI SE FROM BOYD.
 JV2212'1.0 MILE SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2212'THE STATION AT BOYD, MONTGOMERY COUNTY, 300 FEET SOUTHEAST OF
 JV2212'CULVERT 29-A, 225 FEET SOUTHEAST OF MILEPOST W 28, AT POLE 27+50,
 JV2212'ON THE SOUTHWEST CORNER OF THE CONCRETE BASE OF A TELEPHONE
 JV2212'BOX CONNECTED TO THE POLE, 10 FEET NORTHEAST OF THE CENTER
 JV2212'LINE OF THE NORTH-BOUND TRACK, AND 8 INCHES ABOVE THE LEVEL OF
 JV2212'THE RAILS.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0244 ***********************************************************************
 HU0244  DESIGNATION -  27.21
 HU0244  PID         -  HU0244
 HU0244  STATE/COUNTY-  MD/WORCESTER
 HU0244  COUNTRY     -  US
 HU0244  USGS QUAD   -  BERLIN (2016)
 HU0244
 HU0244                         *CURRENT SURVEY CONTROL
 HU0244  ______________________________________________________________________
 HU0244* NAD 83(1986) POSITION- 38 20 28.96   (N) 075 12 58.93   (W)   HD_HELD1
 HU0244* NAVD 88 ORTHO HEIGHT -     7.737 (meters)       25.38  (feet) ADJUSTED
 HU0244  ______________________________________________________________________
 HU0244  GEOID HEIGHT    -        -36.008 (meters)                     GEOID18
 HU0244  DYNAMIC HEIGHT  -          7.732 (meters)       25.37  (feet) COMP
 HU0244  MODELED GRAVITY -    980,007.1   (mgal)                       NAVD 88
 HU0244
 HU0244  VERT ORDER      -  SECOND    CLASS I
 HU0244
 HU0244.The horizontal coordinates were determined by differentially corrected
 HU0244.hand held GPS observations or other comparable positioning techniques
 HU0244.and have an estimated accuracy of +/- 3 meters.
 HU0244
 HU0244.The orthometric height was determined by differential leveling and
 HU0244.adjusted by the NATIONAL GEODETIC SURVEY
 HU0244.in June 1991.
 HU0244
 HU0244.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0244.GEOID18 height accuracy estimate available here.
 HU0244
 HU0244.Click photographs - Photos may exist for this station.
 HU0244
 HU0244.The dynamic height is computed by dividing the NAVD 88
 HU0244.geopotential number by the normal gravity value computed on the
 HU0244.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0244.degrees latitude (g = 980.6199 gals.).
 HU0244
 HU0244.The modeled gravity was interpolated from observed gravity values.
 HU0244
 HU0244;                    North         East    Units  Estimated Accuracy
 HU0244;SPC MD       -    76,419.1     555,920.7     MT  (+/- 3 meters HH1 GPS) 
 HU0244
 HU0244_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8109143714(NAD 83)
 HU0244
 HU0244                          SUPERSEDED SURVEY CONTROL
 HU0244
 HU0244  NGVD 29 (02/25/92)    7.980  (m)           26.18   (f) ADJUSTED    2 0
 HU0244  NGVD 29 (??/??/87)    7.980  (m)           26.18   (f) SUPERSEDED  2 0
 HU0244
 HU0244.Superseded values are not recommended for survey control.
 HU0244
 HU0244.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0244.See file dsdata.pdf to determine how the superseded data were derived.
 HU0244
 HU0244_MARKER: B = BOLT
 HU0244_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU0244_SP_SET: BRIDGE ABUTMENT
 HU0244_MARK LOGO: NONE
 HU0244_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0244_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0244_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0244+SATELLITE: SATELLITE OBSERVATIONS - October 11, 2009
 HU0244
 HU0244  HISTORY     - Date     Condition        Report By
 HU0244  HISTORY     - UNK      MONUMENTED       PRR
 HU0244  HISTORY     - 1962     GOOD             CGS
 HU0244  HISTORY     - 1967     GOOD             CGS
 HU0244  HISTORY     - 19910514 GOOD             MDSHA
 HU0244  HISTORY     - 19980716 GOOD             MDSHA
 HU0244  HISTORY     - 20031228 GOOD             USPSQD
 HU0244  HISTORY     - 20051203 GOOD             USPSQD
 HU0244  HISTORY     - 20091011 GOOD             NGS
 HU0244
 HU0244                          STATION DESCRIPTION
 HU0244
 HU0244'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0244'0.9 MI N FROM BERLIN.
 HU0244'0.9 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION AT
 HU0244'BERLIN, WORCESTER COUNTY, ON THE SURFACE OF THE EAST END OF THE
 HU0244'NORTH ABUTMENT OF BRIDGE 26+80, 9 FEET EAST OF THE CENTERLINE OF
 HU0244'THE TRACK, AND ABOUT 1 FOOT LOWER THAN THE TRACK.  A COPPER BOLT.
 HU0244
 HU0244                          STATION RECOVERY (1967)
 HU0244
 HU0244'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 HU0244'RECOVERED IN GOOD CONDITION.
 HU0244
 HU0244                          STATION RECOVERY (1991)
 HU0244
 HU0244'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU0244'THE MARK IS LOCATED ABOUT 7.0 MI (11.3 KM) WEST OF OCEAN CITY, 1.17
 HU0244'MI (1.88 KM) NORTH OF BERLIN AND ON RAILROAD RIGHT-OF-WAY.  TO REACH
 HU0244'FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN, GO
 HU0244'WEST ON U.S. HIGHWAY 50 FOR 0.14 MI (0.23 KM) TO A RAILROAD
 HU0244'CROSSING.  PARK VEHICLE AND WALK SOUTH FOR 600 FT (182.9 M) TO A
 HU0244'SMALL BRIDGE AND THE MARK ON THE LEFT.  IT IS 283.6 FT (86.4 M) SOUTH
 HU0244'OF THE CENTER LINE OF A RAMP CROSSING THE RAILROAD, 102.0 FT (31.1 M)
 HU0244'SOUTHEAST OF UTILITY A POLE, 7.2 FT (2.2 M) NORTH OF THE CENTER LINE
 HU0244'OF KITTS BRANCH, 6.7 FT (2.0 M) EAST OF THE EAST RAIL AND SET IN THE
 HU0244'TOP OF THE NORTH ABUTMENT OF THE BRIDGE.
 HU0244
 HU0244                          STATION RECOVERY (1998)
 HU0244
 HU0244'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 HU0244'RECOVERED AS DESCRIBED.
 HU0244
 HU0244                          STATION RECOVERY (2003)
 HU0244
 HU0244'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU0244'RECOVERED IN GOOD CONDITION.
 HU0244
 HU0244                          STATION RECOVERY (2005)
 HU0244
 HU0244'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU0244'RECOVERED IN GOOD CONDITION.
 HU0244
 HU0244                          STATION RECOVERY (2009)
 HU0244
 HU0244'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 HU0244'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1498 ***********************************************************************
 HV1498  DESIGNATION -  27.7 USGS
 HV1498  PID         -  HV1498
 HV1498  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1498  COUNTRY     -  US
 HV1498  USGS QUAD   -  BRISTOL (2016)
 HV1498
 HV1498                         *CURRENT SURVEY CONTROL
 HV1498  ______________________________________________________________________
 HV1498* NAD 83(1986) POSITION- 38 49 16.     (N) 076 44 39.     (W)   SCALED
 HV1498* NAVD 88 ORTHO HEIGHT -     8.121 (meters)       26.64  (feet) ADJUSTED
 HV1498  ______________________________________________________________________
 HV1498  GEOID HEIGHT    -        -32.933 (meters)                     GEOID18
 HV1498  DYNAMIC HEIGHT  -          8.116 (meters)       26.63  (feet) COMP
 HV1498  MODELED GRAVITY -    980,068.2   (mgal)                       NAVD 88
 HV1498
 HV1498  VERT ORDER      -  FIRST     CLASS II
 HV1498
 HV1498.The horizontal coordinates were scaled from a map and have
 HV1498.an estimated accuracy of +/- 6 seconds.
 HV1498
 HV1498.The orthometric height was determined by differential leveling and
 HV1498.adjusted by the NATIONAL GEODETIC SURVEY
 HV1498.in June 1991.
 HV1498
 HV1498.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1498.GEOID18 height accuracy estimate available here.
 HV1498
 HV1498.Click photographs - Photos may exist for this station.
 HV1498
 HV1498.The dynamic height is computed by dividing the NAVD 88
 HV1498.geopotential number by the normal gravity value computed on the
 HV1498.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1498.degrees latitude (g = 980.6199 gals.).
 HV1498
 HV1498.The modeled gravity was interpolated from observed gravity values.
 HV1498
 HV1498;                    North         East    Units  Estimated Accuracy
 HV1498;SPC MD       -   128,180.      422,220.      MT  (+/- 180 meters Scaled)
 HV1498
 HV1498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH485983(NAD 83)
 HV1498
 HV1498                          SUPERSEDED SURVEY CONTROL
 HV1498
 HV1498  NGVD 29 (11/26/84)    8.404  (m)           27.57   (f) ADJUSTED    1 2
 HV1498
 HV1498.Superseded values are not recommended for survey control.
 HV1498
 HV1498.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1498.See file dsdata.pdf to determine how the superseded data were derived.
 HV1498
 HV1498_MARKER: Q = CHISELED SQUARE
 HV1498_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1498_SP_SET: CONC PLATFORM
 HV1498_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1498
 HV1498  HISTORY     - Date     Condition        Report By
 HV1498  HISTORY     - UNK      MONUMENTED       USGS
 HV1498  HISTORY     - 1942     GOOD             CGS
 HV1498  HISTORY     - 1971     MARK NOT FOUND   USGS
 HV1498
 HV1498                          STATION DESCRIPTION
 HV1498
 HV1498'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1498'AT UPPER MARLBORO.
 HV1498'AT UPPER MARLBORO, ABOUT 545 FEET NORTH OF THE PENNSYLVANIA
 HV1498'RAILROAD STATION AT MARLBORO, 140 FEET NORTH OF THE CROSSING OF
 HV1498'STATE HIGHWAY 3, ON THE TOP OF THE SOUTHWEST CORNER OF A CONCRETE
 HV1498'PLATFORM AT THE EAST SIDE OF THE POPES CREEK BRANCH OF THE
 HV1498'PENNSYLVANIA RAILROAD, AND 12.8 FEET EAST OF THE CENTERLINE OF
 HV1498'THE TRACK.  A CHISELED SQUARE.
 HV1498
 HV1498                          STATION RECOVERY (1971)
 HV1498
 HV1498'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1971
 HV1498'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1362 ***********************************************************************
 HV1362  DESIGNATION -  2701 WSSC
 HV1362  PID         -  HV1362
 HV1362  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1362  COUNTRY     -  US
 HV1362  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1362
 HV1362                         *CURRENT SURVEY CONTROL
 HV1362  ______________________________________________________________________
 HV1362* NAD 83(1986) POSITION- 38 56 33.     (N) 076 58 22.     (W)   SCALED
 HV1362* NAVD 88 ORTHO HEIGHT -    22.83  (+/-2cm)       74.9   (feet) VERTCON3
 HV1362  ______________________________________________________________________
 HV1362  GEOID HEIGHT    -        -32.100 (meters)                     GEOID18
 HV1362  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1362
 HV1362.The horizontal coordinates were scaled from a map and have
 HV1362.an estimated accuracy of +/- 6 seconds.
 HV1362
 HV1362.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1362.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1362
 HV1362.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1362.GEOID18 height accuracy estimate available here.
 HV1362
 HV1362.The vertical order pertains to the NGVD 29 superseded value.
 HV1362
 HV1362.Click photographs - Photos may exist for this station.
 HV1362
 HV1362;                    North         East    Units  Estimated Accuracy
 HV1362;SPC MD       -   141,620.      402,360.      MT  (+/- 180 meters Scaled)
 HV1362
 HV1362_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ290122(NAD 83)
 HV1362
 HV1362                          SUPERSEDED SURVEY CONTROL
 HV1362
 HV1362  NGVD 29 (11/26/84)   23.055  (m)           75.64   (f) ADJUSTED    2 0
 HV1362
 HV1362.Superseded values are not recommended for survey control.
 HV1362
 HV1362.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1362.See file dsdata.pdf to determine how the superseded data were derived.
 HV1362
 HV1362_MARKER: N = NAIL
 HV1362_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1362_SP_SET: OAK TREE ROOT
 HV1362_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1362
 HV1362  HISTORY     - Date     Condition        Report By
 HV1362  HISTORY     - UNK      MONUMENTED       WSSC
 HV1362  HISTORY     - 1944     GOOD             WSSC
 HV1362
 HV1362                          STATION DESCRIPTION
 HV1362
 HV1362'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1362'AT MT RAINIER.
 HV1362'ON EASTERN AVENUE, 0.4 MILE SOUTHEAST OF QUEENS CHAPEL ROAD,
 HV1362'IN FRONT OF THE KAYWOOD GARDEN APARTMENTS, ON THE NORTH SIDE
 HV1362'OF THE ROAD, AND IN THE SOUTHWEST ROOT OF A 48-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1357 ***********************************************************************
 HV1357  DESIGNATION -  2702 WSSC
 HV1357  PID         -  HV1357
 HV1357  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1357  COUNTRY     -  US
 HV1357  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1357
 HV1357                         *CURRENT SURVEY CONTROL
 HV1357  ______________________________________________________________________
 HV1357* NAD 83(1986) POSITION- 38 56 01.     (N) 076 57 40.     (W)   SCALED
 HV1357* NAVD 88 ORTHO HEIGHT -    17.27  (+/-2cm)       56.7   (feet) VERTCON3
 HV1357  ______________________________________________________________________
 HV1357  GEOID HEIGHT    -        -32.141 (meters)                     GEOID18
 HV1357  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1357
 HV1357.The horizontal coordinates were scaled from a map and have
 HV1357.an estimated accuracy of +/- 6 seconds.
 HV1357
 HV1357.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1357.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1357
 HV1357.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1357.GEOID18 height accuracy estimate available here.
 HV1357
 HV1357.The vertical order pertains to the NGVD 29 superseded value.
 HV1357
 HV1357.Click photographs - Photos may exist for this station.
 HV1357
 HV1357;                    North         East    Units  Estimated Accuracy
 HV1357;SPC MD       -   140,640.      403,370.      MT  (+/- 180 meters Scaled)
 HV1357
 HV1357_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ300112(NAD 83)
 HV1357
 HV1357                          SUPERSEDED SURVEY CONTROL
 HV1357
 HV1357  NGVD 29 (11/26/84)   17.498  (m)           57.41   (f) ADJUSTED    2 0
 HV1357
 HV1357.Superseded values are not recommended for survey control.
 HV1357
 HV1357.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1357.See file dsdata.pdf to determine how the superseded data were derived.
 HV1357
 HV1357_MARKER: Z = SEE DESCRIPTION
 HV1357_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1357_SP_SET: BOUNDARY STONE
 HV1357_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1357
 HV1357  HISTORY     - Date     Condition        Report By
 HV1357  HISTORY     - UNK      MONUMENTED       WSSC
 HV1357  HISTORY     - 1944     GOOD             WSSC
 HV1357
 HV1357                          STATION DESCRIPTION
 HV1357
 HV1357'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1357'AT MT RAINIER.
 HV1357'ON EASTERN AVENUE, AT THE NORTH CORNER OF THE INTERSECTION OF
 HV1357'THIRTY-FOURTH STREET, AND ON THE NORTH CORNER OF BOUNDARY STONE 6.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1367 ***********************************************************************
 HV1367  DESIGNATION -  2703 WSSC
 HV1367  PID         -  HV1367
 HV1367  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1367  COUNTRY     -  US
 HV1367  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1367
 HV1367                         *CURRENT SURVEY CONTROL
 HV1367  ______________________________________________________________________
 HV1367* NAD 83(1986) POSITION- 38 56 57.     (N) 076 58 40.     (W)   SCALED
 HV1367* NAVD 88 ORTHO HEIGHT -    37.07  (+/-2cm)      121.6   (feet) VERTCON3
 HV1367  ______________________________________________________________________
 HV1367  GEOID HEIGHT    -        -32.081 (meters)                     GEOID18
 HV1367  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1367
 HV1367.The horizontal coordinates were scaled from a map and have
 HV1367.an estimated accuracy of +/- 6 seconds.
 HV1367
 HV1367.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1367.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1367
 HV1367.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1367.GEOID18 height accuracy estimate available here.
 HV1367
 HV1367.The vertical order pertains to the NGVD 29 superseded value.
 HV1367
 HV1367.Click photographs - Photos may exist for this station.
 HV1367
 HV1367;                    North         East    Units  Estimated Accuracy
 HV1367;SPC MD       -   142,360.      401,930.      MT  (+/- 180 meters Scaled)
 HV1367
 HV1367_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ286129(NAD 83)
 HV1367
 HV1367                          SUPERSEDED SURVEY CONTROL
 HV1367
 HV1367  NGVD 29 (11/26/84)   37.296  (m)          122.36   (f) ADJUSTED    2 0
 HV1367
 HV1367.Superseded values are not recommended for survey control.
 HV1367
 HV1367.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1367.See file dsdata.pdf to determine how the superseded data were derived.
 HV1367
 HV1367_MARKER: N = NAIL
 HV1367_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1367_SP_SET: BEECH TREE ROOT
 HV1367_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1367
 HV1367  HISTORY     - Date     Condition        Report By
 HV1367  HISTORY     - UNK      MONUMENTED       WSSC
 HV1367  HISTORY     - 1944     GOOD             WSSC
 HV1367
 HV1367                          STATION DESCRIPTION
 HV1367
 HV1367'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1367'AT AVONDALE.
 HV1367'ON LA SALLE ROAD, OPPOSITE THE ENTRANCE TO LA SALLE COLLEGE,
 HV1367'ON THE NORTHEAST SIDE OF THE ROAD, AND IN THE NORTHWEST ROOT
 HV1367'OF A 15-INCH BEECH TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1181 ***********************************************************************
 HV1181  DESIGNATION -  2704 WSSC
 HV1181  PID         -  HV1181
 HV1181  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1181  COUNTRY     -  US
 HV1181  USGS QUAD   -  LANHAM (2016)
 HV1181
 HV1181                         *CURRENT SURVEY CONTROL
 HV1181  ______________________________________________________________________
 HV1181* NAD 83(1986) POSITION- 38 57 20.     (N) 076 51 29.     (W)   SCALED
 HV1181* NAVD 88 ORTHO HEIGHT -    49.82  (+/-2cm)      163.5   (feet) VERTCON3
 HV1181  ______________________________________________________________________
 HV1181  GEOID HEIGHT    -        -32.374 (meters)                     GEOID18
 HV1181  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1181
 HV1181.The horizontal coordinates were scaled from a map and have
 HV1181.an estimated accuracy of +/- 6 seconds.
 HV1181
 HV1181.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1181.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1181
 HV1181.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1181.GEOID18 height accuracy estimate available here.
 HV1181
 HV1181.The vertical order pertains to the NGVD 29 superseded value.
 HV1181
 HV1181.Click photographs - Photos may exist for this station.
 HV1181
 HV1181;                    North         East    Units  Estimated Accuracy
 HV1181;SPC MD       -   143,080.      412,300.      MT  (+/- 180 meters Scaled)
 HV1181
 HV1181_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ390134(NAD 83)
 HV1181
 HV1181                          SUPERSEDED SURVEY CONTROL
 HV1181
 HV1181  NGVD 29 (11/26/84)   50.053  (m)          164.22   (f) ADJUSTED    2 0
 HV1181
 HV1181.Superseded values are not recommended for survey control.
 HV1181
 HV1181.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1181.See file dsdata.pdf to determine how the superseded data were derived.
 HV1181
 HV1181_MARKER: N = NAIL
 HV1181_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1181_SP_SET: OAK TREE ROOT
 HV1181_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1181
 HV1181  HISTORY     - Date     Condition        Report By
 HV1181  HISTORY     - 1944     MONUMENTED       WSSC
 HV1181  HISTORY     - 1944     GOOD             WSSC
 HV1181
 HV1181                          STATION DESCRIPTION
 HV1181
 HV1181'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1181'0.5 MI S FROM LANHAM.
 HV1181'AT THE SOUTHEAST CORNER OF THE INTERSECTION OF WHITEFORT CHAPEL
 HV1181'ROAD AND FOWLER LANE, AND IN THE EAST ROOT OF A 12-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1183 ***********************************************************************
 HV1183  DESIGNATION -  2705 WSSC
 HV1183  PID         -  HV1183
 HV1183  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1183  COUNTRY     -  US
 HV1183  USGS QUAD   -  LANHAM (2016)
 HV1183
 HV1183                         *CURRENT SURVEY CONTROL
 HV1183  ______________________________________________________________________
 HV1183* NAD 83(1986) POSITION- 38 57 13.     (N) 076 51 25.     (W)   SCALED
 HV1183* NAVD 88 ORTHO HEIGHT -    62.61  (+/-2cm)      205.4   (feet) VERTCON3
 HV1183  ______________________________________________________________________
 HV1183  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 HV1183  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1183
 HV1183.The horizontal coordinates were scaled from a map and have
 HV1183.an estimated accuracy of +/- 6 seconds.
 HV1183
 HV1183.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1183.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1183
 HV1183.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1183.GEOID18 height accuracy estimate available here.
 HV1183
 HV1183.The vertical order pertains to the NGVD 29 superseded value.
 HV1183
 HV1183.Click photographs - Photos may exist for this station.
 HV1183
 HV1183;                    North         East    Units  Estimated Accuracy
 HV1183;SPC MD       -   142,870.      412,400.      MT  (+/- 180 meters Scaled)
 HV1183
 HV1183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ390132(NAD 83)
 HV1183
 HV1183                          SUPERSEDED SURVEY CONTROL
 HV1183
 HV1183  NGVD 29 (11/26/84)   62.847  (m)          206.19   (f) ADJUSTED    2 0
 HV1183
 HV1183.Superseded values are not recommended for survey control.
 HV1183
 HV1183.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1183.See file dsdata.pdf to determine how the superseded data were derived.
 HV1183
 HV1183_MARKER: N = NAIL
 HV1183_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1183_SP_SET: OAK TREE ROOT
 HV1183_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1183
 HV1183  HISTORY     - Date     Condition        Report By
 HV1183  HISTORY     - UNK      MONUMENTED       WSSC
 HV1183  HISTORY     - 1944     GOOD             WSSC
 HV1183
 HV1183                          STATION DESCRIPTION
 HV1183
 HV1183'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1183'0.8 MI S FROM LANHAM.
 HV1183'ON WHITEFIELD ROAD, AT THE INTERSECTION OF A COUNTY ROAD, 75
 HV1183'FEET EAST OF WHITEFIELD ROAD, ON THE SOUTH SIDE OF THE COUNTY
 HV1183'ROAD, AND IN THE NORTH ROOT OF AN 18-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1186 ***********************************************************************
 HV1186  DESIGNATION -  2706 WSSC
 HV1186  PID         -  HV1186
 HV1186  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1186  COUNTRY     -  US
 HV1186  USGS QUAD   -  LANHAM (2016)
 HV1186
 HV1186                         *CURRENT SURVEY CONTROL
 HV1186  ______________________________________________________________________
 HV1186* NAD 83(1986) POSITION- 38 56 27.     (N) 076 51 14.     (W)   SCALED
 HV1186* NAVD 88 ORTHO HEIGHT -    54.65  (+/-2cm)      179.3   (feet) VERTCON3
 HV1186  ______________________________________________________________________
 HV1186  GEOID HEIGHT    -        -32.406 (meters)                     GEOID18
 HV1186  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1186
 HV1186.The horizontal coordinates were scaled from a map and have
 HV1186.an estimated accuracy of +/- 6 seconds.
 HV1186
 HV1186.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1186.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1186
 HV1186.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1186.GEOID18 height accuracy estimate available here.
 HV1186
 HV1186.The vertical order pertains to the NGVD 29 superseded value.
 HV1186
 HV1186.Click photographs - Photos may exist for this station.
 HV1186
 HV1186;                    North         East    Units  Estimated Accuracy
 HV1186;SPC MD       -   141,450.      412,670.      MT  (+/- 180 meters Scaled)
 HV1186
 HV1186_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ393118(NAD 83)
 HV1186
 HV1186                          SUPERSEDED SURVEY CONTROL
 HV1186
 HV1186  NGVD 29 (11/26/84)   54.881  (m)          180.06   (f) ADJUSTED    2 0
 HV1186
 HV1186.Superseded values are not recommended for survey control.
 HV1186
 HV1186.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1186.See file dsdata.pdf to determine how the superseded data were derived.
 HV1186
 HV1186_MARKER: N = NAIL
 HV1186_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1186_SP_SET: MAPLE TREE ROOT
 HV1186_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1186
 HV1186  HISTORY     - Date     Condition        Report By
 HV1186  HISTORY     - UNK      MONUMENTED       WSSC
 HV1186  HISTORY     - 1944     MARK NOT FOUND   WSSC
 HV1186
 HV1186                          STATION DESCRIPTION
 HV1186
 HV1186'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1186'AT ARDMORE.
 HV1186'ON THE LANHAM-ARDMORE ROAD, AT THE CROSSING OF THE OLD
 HV1186'WASHINGTON, BALTIMORE AND ANNAPOLIS RAILROAD, 75 FEET EAST OF
 HV1186'THE ROAD, 35 FEET NORTH OF THE OLD ROADBED, IN THE YARD OF A
 HV1186'SCHOOLHOUSE, AND IN THE SOUTH ROOT OF A 36-INCH TRIPLE MAPLE
 HV1186'TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1189 ***********************************************************************
 HV1189  DESIGNATION -  2707 WSSC
 HV1189  PID         -  HV1189
 HV1189  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1189  COUNTRY     -  US
 HV1189  USGS QUAD   -  LANHAM (2016)
 HV1189
 HV1189                         *CURRENT SURVEY CONTROL
 HV1189  ______________________________________________________________________
 HV1189* NAD 83(1986) POSITION- 38 55 58.     (N) 076 51 34.     (W)   SCALED
 HV1189* NAVD 88 ORTHO HEIGHT -    39.10  (+/-2cm)      128.3   (feet) VERTCON3
 HV1189  ______________________________________________________________________
 HV1189  GEOID HEIGHT    -        -32.402 (meters)                     GEOID18
 HV1189  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1189
 HV1189.The horizontal coordinates were scaled from a map and have
 HV1189.an estimated accuracy of +/- 6 seconds.
 HV1189
 HV1189.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1189.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1189
 HV1189.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1189.GEOID18 height accuracy estimate available here.
 HV1189
 HV1189.The vertical order pertains to the NGVD 29 superseded value.
 HV1189
 HV1189.Click photographs - Photos may exist for this station.
 HV1189
 HV1189;                    North         East    Units  Estimated Accuracy
 HV1189;SPC MD       -   140,550.      412,190.      MT  (+/- 180 meters Scaled)
 HV1189
 HV1189_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ388109(NAD 83)
 HV1189
 HV1189                          SUPERSEDED SURVEY CONTROL
 HV1189
 HV1189  NGVD 29 (11/26/84)   39.334  (m)          129.05   (f) ADJUSTED    2 0
 HV1189
 HV1189.Superseded values are not recommended for survey control.
 HV1189
 HV1189.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1189.See file dsdata.pdf to determine how the superseded data were derived.
 HV1189
 HV1189_MARKER: N = NAIL
 HV1189_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1189_SP_SET: OAK TREE ROOT
 HV1189_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1189
 HV1189  HISTORY     - Date     Condition        Report By
 HV1189  HISTORY     - UNK      MONUMENTED       WSSC
 HV1189  HISTORY     - 1944     GOOD             WSSC
 HV1189
 HV1189                          STATION DESCRIPTION
 HV1189
 HV1189'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1189'0.2 MI NW FROM GLENARDEN.
 HV1189'ON THE GLENARDEN ROAD, NEAR A GRAVEL PIT, ON THE WEST SIDE OF
 HV1189'THE ROAD, AND IN THE SOUTH ROOT OF AN 18-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1196 ***********************************************************************
 HV1196  DESIGNATION -  2708 WSSC
 HV1196  PID         -  HV1196
 HV1196  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1196  COUNTRY     -  US
 HV1196  USGS QUAD   -  LANHAM (2016)
 HV1196
 HV1196                         *CURRENT SURVEY CONTROL
 HV1196  ______________________________________________________________________
 HV1196* NAD 83(1986) POSITION- 38 54 56.     (N) 076 50 38.     (W)   SCALED
 HV1196* NAVD 88 ORTHO HEIGHT -    56.06  (+/-2cm)      183.9   (feet) VERTCON3
 HV1196  ______________________________________________________________________
 HV1196  GEOID HEIGHT    -        -32.467 (meters)                     GEOID18
 HV1196  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1196
 HV1196.The horizontal coordinates were scaled from a map and have
 HV1196.an estimated accuracy of +/- 6 seconds.
 HV1196
 HV1196.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1196.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1196
 HV1196.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1196.GEOID18 height accuracy estimate available here.
 HV1196
 HV1196.The vertical order pertains to the NGVD 29 superseded value.
 HV1196
 HV1196.Click photographs - Photos may exist for this station.
 HV1196
 HV1196;                    North         East    Units  Estimated Accuracy
 HV1196;SPC MD       -   138,640.      413,540.      MT  (+/- 180 meters Scaled)
 HV1196
 HV1196_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ401090(NAD 83)
 HV1196
 HV1196                          SUPERSEDED SURVEY CONTROL
 HV1196
 HV1196  NGVD 29 (11/26/84)   56.303  (m)          184.72   (f) ADJUSTED    2 0
 HV1196
 HV1196.Superseded values are not recommended for survey control.
 HV1196
 HV1196.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1196.See file dsdata.pdf to determine how the superseded data were derived.
 HV1196
 HV1196_MARKER: DD = SURVEY DISK
 HV1196_SETTING: 0 = UNSPECIFIED SETTING
 HV1196_STAMPING: 2708
 HV1196_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1196
 HV1196  HISTORY     - Date     Condition        Report By
 HV1196  HISTORY     - UNK      MONUMENTED       WSSC
 HV1196  HISTORY     - 1944     GOOD             WSSC
 HV1196
 HV1196                          STATION DESCRIPTION
 HV1196
 HV1196'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1196'1.4 MI NW FROM LARGO.
 HV1196'ON THE OLD LANDOVER-MARLBORO PIKE, NO FURTHER DESCRIPTION
 HV1196'AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1191 ***********************************************************************
 HV1191  DESIGNATION -  2709 WSSC
 HV1191  PID         -  HV1191
 HV1191  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1191  COUNTRY     -  US
 HV1191  USGS QUAD   -  LANHAM (2016)
 HV1191
 HV1191                         *CURRENT SURVEY CONTROL
 HV1191  ______________________________________________________________________
 HV1191* NAD 83(1986) POSITION- 38 55 30.     (N) 076 51 30.     (W)   SCALED
 HV1191* NAVD 88 ORTHO HEIGHT -    40.83  (+/-2cm)      134.0   (feet) VERTCON3
 HV1191  ______________________________________________________________________
 HV1191  GEOID HEIGHT    -        -32.416 (meters)                     GEOID18
 HV1191  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1191
 HV1191.The horizontal coordinates were scaled from a map and have
 HV1191.an estimated accuracy of +/- 6 seconds.
 HV1191
 HV1191.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1191.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1191
 HV1191.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1191.GEOID18 height accuracy estimate available here.
 HV1191
 HV1191.The vertical order pertains to the NGVD 29 superseded value.
 HV1191
 HV1191.Click photographs - Photos may exist for this station.
 HV1191
 HV1191;                    North         East    Units  Estimated Accuracy
 HV1191;SPC MD       -   139,690.      412,280.      MT  (+/- 180 meters Scaled)
 HV1191
 HV1191_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ389100(NAD 83)
 HV1191
 HV1191                          SUPERSEDED SURVEY CONTROL
 HV1191
 HV1191  NGVD 29 (11/26/84)   41.065  (m)          134.73   (f) ADJUSTED    2 0
 HV1191
 HV1191.Superseded values are not recommended for survey control.
 HV1191
 HV1191.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1191.See file dsdata.pdf to determine how the superseded data were derived.
 HV1191
 HV1191_MARKER: N = NAIL
 HV1191_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1191_SP_SET: CEDAR TREE ROOT
 HV1191_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1191
 HV1191  HISTORY     - Date     Condition        Report By
 HV1191  HISTORY     - UNK      MONUMENTED       WSSC
 HV1191  HISTORY     - 1944     GOOD             WSSC
 HV1191
 HV1191                          STATION DESCRIPTION
 HV1191
 HV1191'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1191'0.3 MI SE FROM GLENARDEN.
 HV1191'ON THE GLENARDEN-BRIGHTSEAT ROAD, AT A DIRT-ROAD JUNCTION, ON
 HV1191'THE NORTH SIDE OF THE MAIN ROAD, AND IN THE SOUTH ROOT OF A
 HV1191'16-INCH CEDAR TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1210 ***********************************************************************
 HV1210  DESIGNATION -  2710 WSSC
 HV1210  PID         -  HV1210
 HV1210  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1210  COUNTRY     -  US
 HV1210  USGS QUAD   -  LANHAM (2016)
 HV1210
 HV1210                         *CURRENT SURVEY CONTROL
 HV1210  ______________________________________________________________________
 HV1210* NAD 83(1986) POSITION- 38 53 23.     (N) 076 51 54.     (W)   SCALED
 HV1210* NAVD 88 ORTHO HEIGHT -    66.08  (+/-2cm)      216.8   (feet) VERTCON3
 HV1210  ______________________________________________________________________
 HV1210  GEOID HEIGHT    -        -32.446 (meters)                     GEOID18
 HV1210  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1210
 HV1210.The horizontal coordinates were scaled from a map and have
 HV1210.an estimated accuracy of +/- 6 seconds.
 HV1210
 HV1210.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1210.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1210
 HV1210.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1210.GEOID18 height accuracy estimate available here.
 HV1210
 HV1210.The vertical order pertains to the NGVD 29 superseded value.
 HV1210
 HV1210.Click photographs - Photos may exist for this station.
 HV1210
 HV1210;                    North         East    Units  Estimated Accuracy
 HV1210;SPC MD       -   135,770.      411,710.      MT  (+/- 180 meters Scaled)
 HV1210
 HV1210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ382061(NAD 83)
 HV1210
 HV1210                          SUPERSEDED SURVEY CONTROL
 HV1210
 HV1210  NGVD 29 (11/26/84)   66.320  (m)          217.58   (f) ADJUSTED    2 0
 HV1210
 HV1210.Superseded values are not recommended for survey control.
 HV1210
 HV1210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1210.See file dsdata.pdf to determine how the superseded data were derived.
 HV1210
 HV1210_MARKER: Z = SEE DESCRIPTION
 HV1210_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1210_SP_SET: POPLAR TREE ROOT
 HV1210_STAMPING: WSSC 2710
 HV1210_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1210
 HV1210  HISTORY     - Date     Condition        Report By
 HV1210  HISTORY     - UNK      MONUMENTED       WSSC
 HV1210  HISTORY     - 1944     GOOD             WSSC
 HV1210  HISTORY     - 1978     MARK NOT FOUND   NGS
 HV1210
 HV1210                          STATION DESCRIPTION
 HV1210
 HV1210'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1210'2.2 MI W FROM LARGO.
 HV1210'ON CENTRAL AVENUE, 0.2 MILE WEST OF THE JUNCTION OF RITCHIE ROAD
 HV1210'LEADING SOUTH, ON THE SOUTH SIDE OF THE ROAD, OPPOSITE A DRIVE
 HV1210'LEADING TO A HOUSE, AND IN THE NORTH ROOT OF A 48-INCH POPLAR
 HV1210'TREE. LAG SCREW AND WASHER.
 HV1210
 HV1210                          STATION RECOVERY (1978)
 HV1210
 HV1210'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
 HV1210'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7830 ***********************************************************************
 HV7830  DESIGNATION -  2711 WSSC
 HV7830  PID         -  HV7830
 HV7830  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7830  COUNTRY     -  US
 HV7830  USGS QUAD   -  LANHAM (2016)
 HV7830
 HV7830                         *CURRENT SURVEY CONTROL
 HV7830  ______________________________________________________________________
 HV7830* NAD 83(1986) POSITION- 38 55 03.     (N) 076 51 25.     (W)   SCALED
 HV7830* NAVD 88 ORTHO HEIGHT -    60.71  (+/-2cm)      199.2   (feet) VERTCON3
 HV7830  ______________________________________________________________________
 HV7830  GEOID HEIGHT    -        -32.430 (meters)                     GEOID18
 HV7830  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV7830
 HV7830.The horizontal coordinates were scaled from a map and have
 HV7830.an estimated accuracy of +/- 6 seconds.
 HV7830
 HV7830.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7830.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7830
 HV7830.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7830.GEOID18 height accuracy estimate available here.
 HV7830
 HV7830.The vertical order pertains to the NGVD 29 superseded value.
 HV7830
 HV7830.Click photographs - Photos may exist for this station.
 HV7830
 HV7830;                    North         East    Units  Estimated Accuracy
 HV7830;SPC MD       -   138,860.      412,410.      MT  (+/- 180 meters Scaled)
 HV7830
 HV7830_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ390092(NAD 83)
 HV7830
 HV7830                          SUPERSEDED SURVEY CONTROL
 HV7830
 HV7830  NGVD 29 (11/26/84)   60.947  (m)          199.96   (f) ADJUSTED    2 0
 HV7830
 HV7830.Superseded values are not recommended for survey control.
 HV7830
 HV7830.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7830.See file dsdata.pdf to determine how the superseded data were derived.
 HV7830
 HV7830_MARKER: DE = TRAVERSE STATION DISK
 HV7830_SETTING: 0 = UNSPECIFIED SETTING
 HV7830_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7830
 HV7830  HISTORY     - Date     Condition        Report By
 HV7830  HISTORY     - UNK      MONUMENTED       WSSC
 HV7830
 HV7830                          STATION DESCRIPTION
 HV7830
 HV7830'DESCRIBED BY WASH SUBURB SAN COMM UNK
 HV7830'0.15 MI W FROM BRIGHTSEAT.
 HV7830'ON THE OLD LANDOVER-MARLBORO PIKE, 700 FEET WEST OF BRIGHTSEAT ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6561 ***********************************************************************
 JV6561  DESIGNATION -  2743004
 JV6561  PID         -  JV6561
 JV6561  STATE/COUNTY-  MD/HOWARD
 JV6561  COUNTRY     -  US
 JV6561  USGS QUAD   -  SAVAGE (2016)
 JV6561
 JV6561                         *CURRENT SURVEY CONTROL
 JV6561  ______________________________________________________________________
 JV6561* NAD 83(1991) POSITION- 39 13 16.87380(N) 076 48 28.32393(W)   NO CHECK
 JV6561* NAVD 88 ORTHO HEIGHT -   159.1   (meters)      522.    (feet) VERTCON3
 JV6561  ______________________________________________________________________
 JV6561  GEOID HEIGHT    -        -32.259 (meters)                     GEOID18
 JV6561  LAPLACE CORR    -         -3.99  (seconds)                    DEFLEC18
 JV6561  HORZ ORDER      -  THIRD
 JV6561
 JV6561.The horizontal coordinates were established by classical geodetic methods
 JV6561.and adjusted by the National Geodetic Survey in January 1992.
 JV6561
 JV6561.No horizontal observational check was made to the station.
 JV6561
 JV6561.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6561.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6561
 JV6561.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6561.GEOID18 height accuracy estimate available here.
 JV6561
 JV6561.Click photographs - Photos may exist for this station.
 JV6561
 JV6561.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6561
 JV6561. The following values were computed from the NAD 83(1991) position.
 JV6561
 JV6561;                    North         East     Units Scale Factor Converg.
 JV6561;SPC MD       -   172,596.826   416,591.199   MT  0.99996799   +0 07 14.1
 JV6561;SPC MD       -   566,261.42  1,366,766.29   sFT  0.99996799   +0 07 14.1
 JV6561;UTM  18      - 4,342,898.068   343,937.252   MT  0.99989989   -1 08 36.2
 JV6561
 JV6561!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6561!SPC MD       -   0.99998010  x   0.99996799  =   0.99994809
 JV6561!UTM  18      -   0.99998010  x   0.99989989  =   0.99988000
 JV6561
 JV6561_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4393742898(NAD 83)
 JV6561
 JV6561                          SUPERSEDED SURVEY CONTROL
 JV6561
 JV6561  NAD 83(1986)-  39 13 16.87155(N)    076 48 28.33293(W) AD(       ) 3
 JV6561  NGVD 29 (02/12/91)  159.3    (m)          523.     (f) VERT ANG       
 JV6561
 JV6561.Superseded values are not recommended for survey control.
 JV6561
 JV6561.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6561.See file dsdata.pdf to determine how the superseded data were derived.
 JV6561
 JV6561_MARKER: DD = SURVEY DISK
 JV6561_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6561_MARK LOGO: MD-027
 JV6561_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6561_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6561+STABILITY: SURFACE MOTION
 JV6561
 JV6561  HISTORY     - Date     Condition        Report By
 JV6561  HISTORY     - UNK      MONUMENTED       MD-027
 JV6561
 JV6561                          STATION DESCRIPTION
 JV6561
 JV6561'DESCRIBED BY HOWARD COUNTY MARYLAND UNK
 JV6561'THE MARK IS LOCATED ABOUT 5.8 MI (9.4 KM) NORTH OF SAVAGE, 5.6 MI
 JV6561'(9.1 KM) WEST OF RELAY AND 3.2 MI (5.2 KM) SOUTH OF ELLICOTT CITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1022 ***********************************************************************
 JV1022  DESIGNATION -  279
 JV1022  PID         -  JV1022
 JV1022  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1022  COUNTRY     -  US
 JV1022  USGS QUAD   -  BELTSVILLE (2016)
 JV1022
 JV1022                         *CURRENT SURVEY CONTROL
 JV1022  ______________________________________________________________________
 JV1022* NAD 83(1986) POSITION- 39 03 53.88   (N) 076 56 12.13   (W)   HD_HELD1
 JV1022* NAVD 88 ORTHO HEIGHT -    84.795 (meters)      278.20  (feet) ADJUSTED
 JV1022  ______________________________________________________________________
 JV1022  GEOID HEIGHT    -        -32.084 (meters)                     GEOID18
 JV1022  DYNAMIC HEIGHT  -         84.750 (meters)      278.05  (feet) COMP
 JV1022  MODELED GRAVITY -    980,093.0   (mgal)                       NAVD 88
 JV1022
 JV1022  VERT ORDER      -  SECOND    CLASS 0
 JV1022
 JV1022.The horizontal coordinates were determined by differentially corrected
 JV1022.hand held GPS observations or other comparable positioning techniques
 JV1022.and have an estimated accuracy of +/- 3 meters.
 JV1022
 JV1022.The orthometric height was determined by differential leveling and
 JV1022.adjusted by the NATIONAL GEODETIC SURVEY
 JV1022.in June 1991.
 JV1022
 JV1022.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1022.GEOID18 height accuracy estimate available here.
 JV1022
 JV1022.Click photographs - Photos may exist for this station.
 JV1022
 JV1022.The dynamic height is computed by dividing the NAVD 88
 JV1022.geopotential number by the normal gravity value computed on the
 JV1022.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1022.degrees latitude (g = 980.6199 gals.).
 JV1022
 JV1022.The modeled gravity was interpolated from observed gravity values.
 JV1022
 JV1022;                    North         East    Units  Estimated Accuracy
 JV1022;SPC MD       -   155,220.1     405,477.9     MT  (+/- 3 meters HH1 GPS) 
 JV1022
 JV1022_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3244425771(NAD 83)
 JV1022
 JV1022                          SUPERSEDED SURVEY CONTROL
 JV1022
 JV1022  NGVD 29 (11/26/84)   85.006  (m)          278.89   (f) ADJUSTED    2 0
 JV1022
 JV1022.Superseded values are not recommended for survey control.
 JV1022
 JV1022.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1022.See file dsdata.pdf to determine how the superseded data were derived.
 JV1022
 JV1022_MARKER: DB = BENCH MARK DISK
 JV1022_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1022_STAMPING: MARYLAND 279
 JV1022_MARK LOGO: USGS
 JV1022_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1022+STABILITY: SURFACE MOTION
 JV1022
 JV1022  HISTORY     - Date     Condition        Report By
 JV1022  HISTORY     - 1904     MONUMENTED       USGS
 JV1022  HISTORY     - 1951     GOOD             CGS
 JV1022  HISTORY     - 20020226 MARK NOT FOUND   MDSHA
 JV1022
 JV1022                          STATION DESCRIPTION
 JV1022
 JV1022'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1022'1.5 MI SE FROM FAIRLAND.
 JV1022'279 (U.S.G.S.) = 991 (W.S.S.D.). IN PRINCE GEORGES COUNTY, 1.5
 JV1022'MILES SOUTHEASTWARD ALONG THE FAIRLAND-BELTSVILLE ROAD (BIGELOW
 JV1022'ROAD) FROM FAIRLAND, MONTGOMERY COUNTY, AT A T INTERSECTION AT
 JV1022'WHICH BIGELOW ROAD CHANGES DIRECTION FROM NEARLY WESTEAST TO
 JV1022'NORTHWEST-SOUTHEAST, IN THE FRONT YARD OF A HOUSE WHICH FACE
 JV1022'SOUTHWEST TOWARD THE INTERSECTION, NORTHWEST OF THE WALK LEADING
 JV1022'TO THE HOUSE, 35.6 FEET FROM THE SOUTH FRONT CORNER OF THE HOUSE,
 JV1022'26.7 FEET FROM THE WEST FRONT CORNER OF THE HOUSE, APPROXIMATELY
 JV1022'IN THE PROLONGATION OF THE NORTHWEST SIDE OF THE HOUSE, AND
 JV1022'ABOUT FLUSH WITH THE GROUND.  A UNITED STATES GEOLOGICAL SURVEY
 JV1022'STANDARD DISK, STAMPED MARYLAND 279 AND SET IN THE TOP OF A
 JV1022'CONCRETE POST.
 JV1022
 JV1022                          STATION RECOVERY (2002)
 JV1022
 JV1022'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV1022'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0626 ***********************************************************************
 JV0626  DESIGNATION -  28 BORR
 JV0626  PID         -  JV0626
 JV0626  STATE/COUNTY-  MD/HOWARD
 JV0626  COUNTRY     -  US
 JV0626  USGS QUAD   -  RELAY (2016)
 JV0626
 JV0626                         *CURRENT SURVEY CONTROL
 JV0626  ______________________________________________________________________
 JV0626* NAD 83(1986) POSITION- 39 11 33.     (N) 076 43 49.     (W)   SCALED
 JV0626* NAVD 88 ORTHO HEIGHT -    26.653 (meters)       87.44  (feet) POSTED
 JV0626  ______________________________________________________________________
 JV0626  GEOID HEIGHT    -        -32.504 (meters)                     GEOID18
 JV0626  DYNAMIC HEIGHT  -         26.64  (meters)       87.4   (feet) COMP
 JV0626  MODELED GRAVITY -    980,096.1   (mgal)                       NAVD 88
 JV0626
 JV0626  VERT ORDER      -  * POSTED, SEE BELOW
 JV0626
 JV0626.The horizontal coordinates were scaled from a map and have
 JV0626.an estimated accuracy of +/- 6 seconds.
 JV0626
 JV0626.The orthometric height was determined by differential leveling
 JV0626.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV0626
 JV0626.* This is a POSTED BENCH MARK height.
 JV0626
 JV0626.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0626.GEOID18 height accuracy estimate available here.
 JV0626
 JV0626.Click photographs - Photos may exist for this station.
 JV0626
 JV0626.The dynamic height is computed by dividing the NAVD 88
 JV0626.geopotential number by the normal gravity value computed on the
 JV0626.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0626.degrees latitude (g = 980.6199 gals.).
 JV0626
 JV0626.The modeled gravity was interpolated from observed gravity values.
 JV0626
 JV0626;                    North         East    Units  Estimated Accuracy
 JV0626;SPC MD       -   169,410.      423,300.      MT  (+/- 180 meters Scaled)
 JV0626
 JV0626_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ505395(NAD 83)
 JV0626
 JV0626                          SUPERSEDED SURVEY CONTROL
 JV0626
 JV0626  NGVD 29 (11/26/84)   26.871  (m)           88.16   (f) ADJUSTED    1 2
 JV0626
 JV0626.Superseded values are not recommended for survey control.
 JV0626
 JV0626.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0626.See file dsdata.pdf to determine how the superseded data were derived.
 JV0626
 JV0626_MARKER: B = BOLT
 JV0626_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0626_SP_SET: CULVERT
 JV0626_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0626
 JV0626  HISTORY     - Date     Condition        Report By
 JV0626  HISTORY     - 1903     MONUMENTED       BORR
 JV0626  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0626
 JV0626                          STATION DESCRIPTION
 JV0626
 JV0626'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0626'0.3 MI NE FROM HARWOOD.
 JV0626'0.3 MILE NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0626'FROM HAR-WOOD, HOWARD COUNTY, 450 FEET NORTH OF OLD MILEPOST
 JV0626'BALTIMORE 12, AT A MASONRY-ARCH CULVERT UNDER THE TRACK, IN
 JV0626'THE CENTER OF THE TOP OF THE EAST HEAD WALL, 20 FEET EAST OF THE
 JV0626'EAST RAIL, AND ABOUT 6 FEET LOWER THAN THE BASE OF THE RAIL.
 JV0626'A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2213 ***********************************************************************
 JV2213  DESIGNATION -  28+30 BORR
 JV2213  PID         -  JV2213
 JV2213  STATE/COUNTY-  MD/MONTGOMERY
 JV2213  COUNTRY     -  US
 JV2213  USGS QUAD   -  GERMANTOWN (2016)
 JV2213
 JV2213                         *CURRENT SURVEY CONTROL
 JV2213  ______________________________________________________________________
 JV2213* NAD 83(1986) POSITION- 39 10 58.     (N) 077 18 19.     (W)   SCALED
 JV2213* NAVD 88 ORTHO HEIGHT -   126.08  (+/-2cm)      413.6   (feet) VERTCON3
 JV2213  ______________________________________________________________________
 JV2213  GEOID HEIGHT    -        -31.907 (meters)                     GEOID18
 JV2213  VERT ORDER      -  ? (See Below)
 JV2213
 JV2213.The horizontal coordinates were scaled from a map and have
 JV2213.an estimated accuracy of +/- 6 seconds.
 JV2213
 JV2213.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2213.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2213
 JV2213.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2213.GEOID18 height accuracy estimate available here.
 JV2213
 JV2213.The vertical order pertains to the NGVD 29 superseded value.
 JV2213
 JV2213.Click photographs - Photos may exist for this station.
 JV2213
 JV2213;                    North         East    Units  Estimated Accuracy
 JV2213;SPC MD       -   168,340.      373,620.      MT  (+/- 180 meters Scaled)
 JV2213
 JV2213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ008395(NAD 83)
 JV2213
 JV2213                          SUPERSEDED SURVEY CONTROL
 JV2213
 JV2213  NGVD 29 (11/26/84)  126.290  (m)          414.34   (f) ADJUSTED       
 JV2213
 JV2213.Superseded values are not recommended for survey control.
 JV2213
 JV2213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2213.See file dsdata.pdf to determine how the superseded data were derived.
 JV2213
 JV2213_MARKER: Q = CHISELED SQUARE
 JV2213_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2213_SP_SET: SIGNAL BASE
 JV2213_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2213
 JV2213  HISTORY     - Date     Condition        Report By
 JV2213  HISTORY     - UNK      MONUMENTED       BORR
 JV2213  HISTORY     - 1938     GOOD             CGS
 JV2213
 JV2213                          STATION DESCRIPTION
 JV2213
 JV2213'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2213'0.4 MI SE FROM BOYD.
 JV2213'0.4 MILE SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2213'THE STATION AT BOYD, MONTGOMERY COUNTY, AT SIGNAL E 28+30, ON
 JV2213'THE NORTHEAST CORNER OF THE CONCRETE BASE, 20 FEET SOUTHWEST
 JV2213'OF THE CENTER LINE OF THE SOUTH-BOUND TRACK, AND 8 INCHES
 JV2213'ABOVE THE LEVEL OF THE RAILS.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1262 ***********************************************************************
 JW1262  DESIGNATION -  2800
 JW1262  PID         -  JW1262
 JW1262  STATE/COUNTY-  MD/GARRETT
 JW1262  COUNTRY     -  US
 JW1262  USGS QUAD   -  WESTERNPORT (2016)
 JW1262
 JW1262                         *CURRENT SURVEY CONTROL
 JW1262  ______________________________________________________________________
 JW1262* NAD 83(1995) POSITION- 39 26 06.22471(N) 079 07 18.95755(W)   ADJUSTED
 JW1262* NAVD 88 ORTHO HEIGHT -   474.9   (meters)     1558.    (feet) VERTCON3
 JW1262  ______________________________________________________________________
 JW1262  GEOID HEIGHT    -        -31.763 (meters)                     GEOID18
 JW1262  LAPLACE CORR    -         -7.30  (seconds)                    DEFLEC18
 JW1262  HORZ ORDER      -  SECOND
 JW1262
 JW1262.The horizontal coordinates were established by classical geodetic methods
 JW1262.and adjusted by the National Geodetic Survey in April 1998.
 JW1262
 JW1262.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1262.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1262
 JW1262.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1262.GEOID18 height accuracy estimate available here.
 JW1262
 JW1262.Click photographs - Photos may exist for this station.
 JW1262
 JW1262.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1262
 JW1262. The following values were computed from the NAD 83(1995) position.
 JW1262
 JW1262;                    North         East     Units Scale Factor Converg.
 JW1262;SPC MD       -   198,428.310   217,332.518   MT  0.99999742   -1 19 54.5
 JW1262;SPC MD       -   651,010.21    713,031.77   sFT  0.99999742   -1 19 54.5
 JW1262;SPC WV N     -   103,876.106   632,547.259   MT  0.99994626   +0 14 28.0
 JW1262;SPC WV N     -   340,800.19  2,075,282.13   sFT  0.99994626   +0 14 28.0
 JW1262;UTM  17      - 4,366,740.717   661,630.186   MT  0.99992166   +1 11 35.6
 JW1262
 JW1262!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1262!SPC MD       -   0.99993048  x   0.99999742  =   0.99992790
 JW1262!SPC WV N     -   0.99993048  x   0.99994626  =   0.99987674
 JW1262!UTM  17      -   0.99993048  x   0.99992166  =   0.99985214
 JW1262
 JW1262:                Primary Azimuth Mark                     Grid Az
 JW1262:SPC MD       -  500 USE 1975                             188 47 38.2
 JW1262:SPC WV N     -  500 USE 1975                             187 13 15.7
 JW1262:UTM  17      -  500 USE 1975                             186 16 08.1
 JW1262
 JW1262_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD6163066740(NAD 83)
 JW1262
 JW1262|---------------------------------------------------------------------|
 JW1262| PID    Reference Object                     Distance      Geod. Az  |
 JW1262|                                                           dddmmss.s |
 JW1262| JW1264 BLOOMINGTON                         APPROX. 0.6 KM 0034017.0 |
 JW1262| JW1263 500 USE 1975                        APPROX. 0.7 KM 1872743.7 |
 JW1262|---------------------------------------------------------------------|
 JW1262
 JW1262                          SUPERSEDED SURVEY CONTROL
 JW1262
 JW1262  NAD 83(1991)-  39 26 06.22826(N)    079 07 18.95908(W) AD(       ) 2
 JW1262  NAD 83(1986)-  39 26 06.23180(N)    079 07 18.96693(W) AD(       ) 2
 JW1262  NAD 27      -  39 26 05.88462(N)    079 07 19.84779(W) AD(       ) 2
 JW1262  NGVD 29 (07/19/86)  475.1    (m)         1559.     (f) VERT ANG       
 JW1262
 JW1262.Superseded values are not recommended for survey control.
 JW1262
 JW1262.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1262.See file dsdata.pdf to determine how the superseded data were derived.
 JW1262
 JW1262_MARKER: I = METAL ROD
 JW1262_SETTING: 0 = UNSPECIFIED SETTING
 JW1262_MARK LOGO: USACE
 JW1262_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW1262
 JW1262  HISTORY     - Date     Condition        Report By
 JW1262  HISTORY     - 1975     MONUMENTED       USACE
 JW1262
 JW1262                          STATION DESCRIPTION
 JW1262
 JW1262'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1975 (JRS)
 JW1262'THE STATION IS ABOUT 8.5 MILES WEST OF KEYSER, 5 MILES NORTH
 JW1262'EAST OF KITZMILLER, 4.5 MILES SOUTHWEST OF BLOOMINGTON AND IS
 JW1262'ON PROPERTY OWNED BY THE U.S. ARMY CORPS OF ENGINEERS, PERMISSION
 JW1262'BY FRANKLIN D. LESTER, CHIEF SURVEYOR, BALTIMORE DISTRICT
 JW1262'TELEPHONE NUMBER 301-962-2309
 JW1262'
 JW1262'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 42 AND
 JW1262'46 IN ELK GARDEN, GO NORTHERLY ON STATE HIGHWAY 46 FOR 3.2 MILES
 JW1262'TO A RAILROAD CROSSING IN THE ABANDONED VILLAGE OF SHAW,
 JW1262'CONTINUE AHEAD FOR 0.45 MILE TO WHERE THE ROAD TURNS RIGHT,
 JW1262'UPHILL, AND A SIDE ROAD LEFT. TURN LEFT, THROUGH A DOUBLE GATE,
 JW1262'AND GO NORTHERLY FOR 0.05 MILE TO A TEMPORARY CONTRACTOR OFFICE,
 JW1262'CONTINUE ON A RIVER BOTTOM ROAD FOR 0.8 MILE TO THE DAM SITE
 JW1262'AND A SIDE ROAD RIGHT, CONTINUE NORTH ON THE RIVER ROAD FOR
 JW1262'0.4 THE RAILROAD AND BRIDGE ACROSS THE RIVER FOR 0.1 MILE TO A
 JW1262'SIDE ROAD LEFT. TURN LEFT A GO SOUTH ALONG THE RIVER 1.0 MILE,
 JW1262'ON THE THE WEST SIDE AND PASSING THE DAM SITE, TO THE END OF
 JW1262'THE GRADED ROAD. FOLLOW A TRACK ROAD TO THE RIGHT FOR 0.1 MILE
 JW1262'TO A FORK, TAKE THE LEFT FORK AND GO WESTERLY FOR 0.4 MILES
 JW1262'TO A SIDE ROAD RIGHT. FROM HERE A FOUR WHEEL DRIVE VEHICLE
 JW1262'WILL BE NEEDED, TURN RIGHT AND GO NORTHERLY, UPHILL, FOR 0.3
 JW1262'MILE TO THE TOP OF A RIDGE AND THE STATION ON THE LEFT NEAR
 JW1262'A TRIANGLE BLAZED TREE.
 JW1262'
 JW1262'STATION MARK IS A THREE EIGHTHS-INCH REINFORCING ROD WHICH
 JW1262'PROTRUDES 1.2 INCH ABOVE A PRECAST 4-INCH CONCRETE MONUMENT,
 JW1262'THAT PROJECTS 3 INCHES ABOVE THE GROUND. IT IS 5.8 FEET SOUTH
 JW1262'OF THE APPROXIMATE CENTER OF A TRACK ROAD AND 5.8 FEET NORTH
 JW1262'WEST OF A TRIANGLE BLAZED TREE.
 JW1262'
 JW1262'STATION 5+00 WILL SERVE AS THE AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2356 ***********************************************************************
 HV2356  DESIGNATION -  2801 WSSC
 HV2356  PID         -  HV2356
 HV2356  STATE/COUNTY-  MD/MONTGOMERY
 HV2356  COUNTRY     -  US
 HV2356  USGS QUAD   -  FALLS CHURCH (2019)
 HV2356
 HV2356                         *CURRENT SURVEY CONTROL
 HV2356  ______________________________________________________________________
 HV2356* NAD 83(1986) POSITION- 38 59 28.     (N) 077 09 34.     (W)   SCALED
 HV2356* NAVD 88 ORTHO HEIGHT -    42.110 (meters)      138.16  (feet) ADJUSTED
 HV2356  ______________________________________________________________________
 HV2356  GEOID HEIGHT    -        -31.794 (meters)                     GEOID18
 HV2356  DYNAMIC HEIGHT  -         42.088 (meters)      138.08  (feet) COMP
 HV2356  MODELED GRAVITY -    980,097.6   (mgal)                       NAVD 88
 HV2356
 HV2356  VERT ORDER      -  SECOND    CLASS 0
 HV2356
 HV2356.The horizontal coordinates were scaled from a map and have
 HV2356.an estimated accuracy of +/- 6 seconds.
 HV2356
 HV2356.The orthometric height was determined by differential leveling and
 HV2356.adjusted by the NATIONAL GEODETIC SURVEY
 HV2356.in June 1991.
 HV2356
 HV2356.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2356.GEOID18 height accuracy estimate available here.
 HV2356
 HV2356.Click photographs - Photos may exist for this station.
 HV2356
 HV2356.The dynamic height is computed by dividing the NAVD 88
 HV2356.geopotential number by the normal gravity value computed on the
 HV2356.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2356.degrees latitude (g = 980.6199 gals.).
 HV2356
 HV2356.The modeled gravity was interpolated from observed gravity values.
 HV2356
 HV2356;                    North         East    Units  Estimated Accuracy
 HV2356;SPC MD       -   147,030.      386,190.      MT  (+/- 180 meters Scaled)
 HV2356
 HV2356_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ129180(NAD 83)
 HV2356
 HV2356                          SUPERSEDED SURVEY CONTROL
 HV2356
 HV2356  NGVD 29 (11/26/84)   42.341  (m)          138.91   (f) ADJUSTED    2 0
 HV2356
 HV2356.Superseded values are not recommended for survey control.
 HV2356
 HV2356.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2356.See file dsdata.pdf to determine how the superseded data were derived.
 HV2356
 HV2356_MARKER: Q = CHISELED SQUARE
 HV2356_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2356_SP_SET: BRIDGE
 HV2356_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2356
 HV2356  HISTORY     - Date     Condition        Report By
 HV2356  HISTORY     - UNK      MONUMENTED       WSSC
 HV2356  HISTORY     - 1957     GOOD             WSSC
 HV2356
 HV2356                          STATION DESCRIPTION
 HV2356
 HV2356'DESCRIBED BY WASH SUBURB SAN COMM 1957
 HV2356'3.2 MI SE FROM POTOMAC.
 HV2356'3.2 MI. S.E. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS
 HV2356'INTERSECTION WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC AT THE
 HV2356'S. CORNER OF THE BRIDGE OVER THOMAS BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2357 ***********************************************************************
 HV2357  DESIGNATION -  2802 WSSC
 HV2357  PID         -  HV2357
 HV2357  STATE/COUNTY-  MD/MONTGOMERY
 HV2357  COUNTRY     -  US
 HV2357  USGS QUAD   -  FALLS CHURCH (2019)
 HV2357
 HV2357                         *CURRENT SURVEY CONTROL
 HV2357  ______________________________________________________________________
 HV2357* NAD 83(1986) POSITION- 38 59 35.     (N) 077 09 44.     (W)   SCALED
 HV2357* NAVD 88 ORTHO HEIGHT -    41.110 (meters)      134.88  (feet) ADJUSTED
 HV2357  ______________________________________________________________________
 HV2357  GEOID HEIGHT    -        -31.789 (meters)                     GEOID18
 HV2357  DYNAMIC HEIGHT  -         41.088 (meters)      134.80  (feet) COMP
 HV2357  MODELED GRAVITY -    980,098.2   (mgal)                       NAVD 88
 HV2357
 HV2357  VERT ORDER      -  SECOND    CLASS 0
 HV2357
 HV2357.The horizontal coordinates were scaled from a map and have
 HV2357.an estimated accuracy of +/- 6 seconds.
 HV2357
 HV2357.The orthometric height was determined by differential leveling and
 HV2357.adjusted by the NATIONAL GEODETIC SURVEY
 HV2357.in June 1991.
 HV2357
 HV2357.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2357.GEOID18 height accuracy estimate available here.
 HV2357
 HV2357.Click photographs - Photos may exist for this station.
 HV2357
 HV2357.The dynamic height is computed by dividing the NAVD 88
 HV2357.geopotential number by the normal gravity value computed on the
 HV2357.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2357.degrees latitude (g = 980.6199 gals.).
 HV2357
 HV2357.The modeled gravity was interpolated from observed gravity values.
 HV2357
 HV2357;                    North         East    Units  Estimated Accuracy
 HV2357;SPC MD       -   147,250.      385,950.      MT  (+/- 180 meters Scaled)
 HV2357
 HV2357_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ127182(NAD 83)
 HV2357
 HV2357                          SUPERSEDED SURVEY CONTROL
 HV2357
 HV2357  NGVD 29 (11/26/84)   41.341  (m)          135.63   (f) ADJUSTED    2 0
 HV2357
 HV2357.Superseded values are not recommended for survey control.
 HV2357
 HV2357.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2357.See file dsdata.pdf to determine how the superseded data were derived.
 HV2357
 HV2357_MARKER: Q = CHISELED SQUARE
 HV2357_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2357_SP_SET: CONCRETE HEADWALL
 HV2357_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2357
 HV2357  HISTORY     - Date     Condition        Report By
 HV2357  HISTORY     - UNK      MONUMENTED       WSSC
 HV2357  HISTORY     - 1957     GOOD             WSSC
 HV2357
 HV2357                          STATION DESCRIPTION
 HV2357
 HV2357'DESCRIBED BY WASH SUBURB SAN COMM 1957
 HV2357'3 MI SE FROM POTOMAC.
 HV2357'3.0 MI. S.E. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS
 HV2357'INTERSECTION WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC, ABOUT
 HV2357'400 FT. N.W. OF THE INTERSECTION WITH SEVEN LOCKS ROAD IN THE TOP
 HV2357'CONC. HEADWALL ON S.W. SIDE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2358 ***********************************************************************
 HV2358  DESIGNATION -  2803 WSSC
 HV2358  PID         -  HV2358
 HV2358  STATE/COUNTY-  MD/MONTGOMERY
 HV2358  COUNTRY     -  US
 HV2358  USGS QUAD   -  FALLS CHURCH (2019)
 HV2358
 HV2358                         *CURRENT SURVEY CONTROL
 HV2358  ______________________________________________________________________
 HV2358* NAD 83(1986) POSITION- 38 59 47.     (N) 077 10 08.     (W)   SCALED
 HV2358* NAVD 88 ORTHO HEIGHT -    46.650 (meters)      153.05  (feet) ADJUSTED
 HV2358  ______________________________________________________________________
 HV2358  GEOID HEIGHT    -        -31.778 (meters)                     GEOID18
 HV2358  DYNAMIC HEIGHT  -         46.625 (meters)      152.97  (feet) COMP
 HV2358  MODELED GRAVITY -    980,099.4   (mgal)                       NAVD 88
 HV2358
 HV2358  VERT ORDER      -  SECOND    CLASS 0
 HV2358
 HV2358.The horizontal coordinates were scaled from a map and have
 HV2358.an estimated accuracy of +/- 6 seconds.
 HV2358
 HV2358.The orthometric height was determined by differential leveling and
 HV2358.adjusted by the NATIONAL GEODETIC SURVEY
 HV2358.in June 1991.
 HV2358
 HV2358.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2358.GEOID18 height accuracy estimate available here.
 HV2358
 HV2358.Click photographs - Photos may exist for this station.
 HV2358
 HV2358.The dynamic height is computed by dividing the NAVD 88
 HV2358.geopotential number by the normal gravity value computed on the
 HV2358.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2358.degrees latitude (g = 980.6199 gals.).
 HV2358
 HV2358.The modeled gravity was interpolated from observed gravity values.
 HV2358
 HV2358;                    North         East    Units  Estimated Accuracy
 HV2358;SPC MD       -   147,620.      385,370.      MT  (+/- 180 meters Scaled)
 HV2358
 HV2358_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ121186(NAD 83)
 HV2358
 HV2358                          SUPERSEDED SURVEY CONTROL
 HV2358
 HV2358  NGVD 29 (11/26/84)   46.881  (m)          153.81   (f) ADJUSTED    2 0
 HV2358
 HV2358.Superseded values are not recommended for survey control.
 HV2358
 HV2358.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2358.See file dsdata.pdf to determine how the superseded data were derived.
 HV2358
 HV2358_MARKER: Q = CHISELED SQUARE
 HV2358_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2358_SP_SET: BRIDGE
 HV2358_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2358
 HV2358  HISTORY     - Date     Condition        Report By
 HV2358  HISTORY     - UNK      MONUMENTED       WSSC
 HV2358  HISTORY     - 1957     GOOD             WSSC
 HV2358  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2358
 HV2358                          STATION DESCRIPTION
 HV2358
 HV2358'DESCRIBED BY WASH SUBURB SAN COMM 1957
 HV2358'2.6 MI SE FROM POTOMAC.
 HV2358'2.65 MI. S.E. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS
 HV2358'INTERSECTION WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC IN THE
 HV2358'S.E. CORNER OF THE BRIDGE OVER CABIN BRANCH.
 HV2358
 HV2358                          STATION RECOVERY (2000)
 HV2358
 HV2358'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2358'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2809 ***********************************************************************
 JV2809  DESIGNATION -  2805 WSSC
 JV2809  PID         -  JV2809
 JV2809  STATE/COUNTY-  MD/MONTGOMERY
 JV2809  COUNTRY     -  US
 JV2809  USGS QUAD   -  ROCKVILLE (2016)
 JV2809
 JV2809                         *CURRENT SURVEY CONTROL
 JV2809  ______________________________________________________________________
 JV2809* NAD 83(1986) POSITION- 39 00 06.     (N) 077 10 51.     (W)   SCALED
 JV2809* NAVD 88 ORTHO HEIGHT -    87.129 (meters)      285.86  (feet) ADJUSTED
 JV2809  ______________________________________________________________________
 JV2809  GEOID HEIGHT    -        -31.759 (meters)                     GEOID18
 JV2809  DYNAMIC HEIGHT  -         87.083 (meters)      285.70  (feet) COMP
 JV2809  MODELED GRAVITY -    980,101.8   (mgal)                       NAVD 88
 JV2809
 JV2809  VERT ORDER      -  SECOND    CLASS 0
 JV2809
 JV2809.The horizontal coordinates were scaled from a map and have
 JV2809.an estimated accuracy of +/- 6 seconds.
 JV2809
 JV2809.The orthometric height was determined by differential leveling and
 JV2809.adjusted by the NATIONAL GEODETIC SURVEY
 JV2809.in June 1991.
 JV2809
 JV2809.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2809.GEOID18 height accuracy estimate available here.
 JV2809
 JV2809.Click photographs - Photos may exist for this station.
 JV2809
 JV2809.The dynamic height is computed by dividing the NAVD 88
 JV2809.geopotential number by the normal gravity value computed on the
 JV2809.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2809.degrees latitude (g = 980.6199 gals.).
 JV2809
 JV2809.The modeled gravity was interpolated from observed gravity values.
 JV2809
 JV2809;                    North         East    Units  Estimated Accuracy
 JV2809;SPC MD       -   148,210.      384,340.      MT  (+/- 180 meters Scaled)
 JV2809
 JV2809_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ111192(NAD 83)
 JV2809
 JV2809                          SUPERSEDED SURVEY CONTROL
 JV2809
 JV2809  NGVD 29 (11/26/84)   87.360  (m)          286.61   (f) ADJUSTED    2 0
 JV2809
 JV2809.Superseded values are not recommended for survey control.
 JV2809
 JV2809.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2809.See file dsdata.pdf to determine how the superseded data were derived.
 JV2809
 JV2809_MARKER: Z = SEE DESCRIPTION
 JV2809_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2809_SP_SET: STONEWALL
 JV2809_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2809
 JV2809  HISTORY     - Date     Condition        Report By
 JV2809  HISTORY     - UNK      MONUMENTED       WSSC
 JV2809  HISTORY     - 1957     GOOD             WSSC
 JV2809
 JV2809                          STATION DESCRIPTION
 JV2809
 JV2809'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2809'1.9 MI SE FROM POTOMAC.
 JV2809'1.9 MI. S.E. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2809'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC AT THE INTERSECTION
 JV2809'WITH BRADLEY ROAD AND IN THE W. CORNER OF CONC. BLOCK OVER STONE
 JV2809'WALL RUNNING BETWEEN APHRODITE AND BRADLEY ROADS. NOT MARKED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2810 ***********************************************************************
 JV2810  DESIGNATION -  2806 WSSC
 JV2810  PID         -  JV2810
 JV2810  STATE/COUNTY-  MD/MONTGOMERY
 JV2810  COUNTRY     -  US
 JV2810  USGS QUAD   -  ROCKVILLE (2016)
 JV2810
 JV2810                         *CURRENT SURVEY CONTROL
 JV2810  ______________________________________________________________________
 JV2810* NAD 83(1986) POSITION- 39 00 18.     (N) 077 11 16.     (W)   SCALED
 JV2810* NAVD 88 ORTHO HEIGHT -    94.731 (meters)      310.80  (feet) ADJUSTED
 JV2810  ______________________________________________________________________
 JV2810  GEOID HEIGHT    -        -31.748 (meters)                     GEOID18
 JV2810  DYNAMIC HEIGHT  -         94.681 (meters)      310.63  (feet) COMP
 JV2810  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV2810
 JV2810  VERT ORDER      -  SECOND    CLASS 0
 JV2810
 JV2810.The horizontal coordinates were scaled from a map and have
 JV2810.an estimated accuracy of +/- 6 seconds.
 JV2810
 JV2810.The orthometric height was determined by differential leveling and
 JV2810.adjusted by the NATIONAL GEODETIC SURVEY
 JV2810.in June 1991.
 JV2810
 JV2810.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2810.GEOID18 height accuracy estimate available here.
 JV2810
 JV2810.Click photographs - Photos may exist for this station.
 JV2810
 JV2810.The dynamic height is computed by dividing the NAVD 88
 JV2810.geopotential number by the normal gravity value computed on the
 JV2810.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2810.degrees latitude (g = 980.6199 gals.).
 JV2810
 JV2810.The modeled gravity was interpolated from observed gravity values.
 JV2810
 JV2810;                    North         East    Units  Estimated Accuracy
 JV2810;SPC MD       -   148,580.      383,740.      MT  (+/- 180 meters Scaled)
 JV2810
 JV2810_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ105196(NAD 83)
 JV2810
 JV2810                          SUPERSEDED SURVEY CONTROL
 JV2810
 JV2810  NGVD 29 (11/26/84)   94.961  (m)          311.55   (f) ADJUSTED    2 0
 JV2810
 JV2810.Superseded values are not recommended for survey control.
 JV2810
 JV2810.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2810.See file dsdata.pdf to determine how the superseded data were derived.
 JV2810
 JV2810_MARKER: Q = CHISELED SQUARE
 JV2810_SETTING: 0 = UNSPECIFIED SETTING
 JV2810_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2810
 JV2810  HISTORY     - Date     Condition        Report By
 JV2810  HISTORY     - UNK      MONUMENTED       WSSC
 JV2810  HISTORY     - 1957     GOOD             WSSC
 JV2810  HISTORY     - 20040828 GOOD             GEOCAC
 JV2810
 JV2810                          STATION DESCRIPTION
 JV2810
 JV2810'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2810'1.4 MI SE FROM POTOMAC.
 JV2810'1.45 MI. S.E. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2810'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC IN THE HEADWALL IN
 JV2810'THE S. CORNER OF THE JUNCTION WITH DURHAM DRIVE.
 JV2810
 JV2810                          STATION RECOVERY (2004)
 JV2810
 JV2810'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV2810'THE 'HEADWALL' MIGHT BETTER BE DESCRIBED AS A STORM DRAIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2811 ***********************************************************************
 JV2811  DESIGNATION -  2807 WSSC
 JV2811  PID         -  JV2811
 JV2811  STATE/COUNTY-  MD/MONTGOMERY
 JV2811  COUNTRY     -  US
 JV2811  USGS QUAD   -  ROCKVILLE (2016)
 JV2811
 JV2811                         *CURRENT SURVEY CONTROL
 JV2811  ______________________________________________________________________
 JV2811* NAD 83(1986) POSITION- 39 00 31.     (N) 077 11 40.     (W)   SCALED
 JV2811* NAVD 88 ORTHO HEIGHT -    96.895 (meters)      317.90  (feet) ADJUSTED
 JV2811  ______________________________________________________________________
 JV2811  GEOID HEIGHT    -        -31.738 (meters)                     GEOID18
 JV2811  DYNAMIC HEIGHT  -         96.845 (meters)      317.73  (feet) COMP
 JV2811  MODELED GRAVITY -    980,104.8   (mgal)                       NAVD 88
 JV2811
 JV2811  VERT ORDER      -  SECOND    CLASS 0
 JV2811
 JV2811.The horizontal coordinates were scaled from a map and have
 JV2811.an estimated accuracy of +/- 6 seconds.
 JV2811
 JV2811.The orthometric height was determined by differential leveling and
 JV2811.adjusted by the NATIONAL GEODETIC SURVEY
 JV2811.in June 1991.
 JV2811
 JV2811.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2811.GEOID18 height accuracy estimate available here.
 JV2811
 JV2811.Click photographs - Photos may exist for this station.
 JV2811
 JV2811.The dynamic height is computed by dividing the NAVD 88
 JV2811.geopotential number by the normal gravity value computed on the
 JV2811.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2811.degrees latitude (g = 980.6199 gals.).
 JV2811
 JV2811.The modeled gravity was interpolated from observed gravity values.
 JV2811
 JV2811;                    North         East    Units  Estimated Accuracy
 JV2811;SPC MD       -   148,980.      383,160.      MT  (+/- 180 meters Scaled)
 JV2811
 JV2811_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ099200(NAD 83)
 JV2811
 JV2811                          SUPERSEDED SURVEY CONTROL
 JV2811
 JV2811  NGVD 29 (11/26/84)   97.126  (m)          318.65   (f) ADJUSTED    2 0
 JV2811
 JV2811.Superseded values are not recommended for survey control.
 JV2811
 JV2811.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2811.See file dsdata.pdf to determine how the superseded data were derived.
 JV2811
 JV2811_MARKER: Q = CHISELED SQUARE
 JV2811_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2811_SP_SET: HEADWALL
 JV2811_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2811
 JV2811  HISTORY     - Date     Condition        Report By
 JV2811  HISTORY     - UNK      MONUMENTED       WSSC
 JV2811  HISTORY     - 1957     GOOD             WSSC
 JV2811  HISTORY     - 20060318 MARK NOT FOUND   GEOCAC
 JV2811
 JV2811                          STATION DESCRIPTION
 JV2811
 JV2811'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2811'1 MI SE FROM POTOMAC.
 JV2811'1.0 MI. S.E. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2811'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC IN THE S.W. CORNER OF
 JV2811'THE CONCRETE HEADWALL ON THE S.E. SIDE OF THE ROAD ADJACENT TO
 JV2811'THE M.J. STERZER PROPERTY.
 JV2811
 JV2811                          STATION RECOVERY (2006)
 JV2811
 JV2811'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JV2811'METAL PIPE CULVERT FOUND AT DESCRIBED LOCATION MAY HAVE REPLACED
 JV2811'CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2812 ***********************************************************************
 JV2812  DESIGNATION -  2808 WSSC
 JV2812  PID         -  JV2812
 JV2812  STATE/COUNTY-  MD/MONTGOMERY
 JV2812  COUNTRY     -  US
 JV2812  USGS QUAD   -  ROCKVILLE (2016)
 JV2812
 JV2812                         *CURRENT SURVEY CONTROL
 JV2812  ______________________________________________________________________
 JV2812* NAD 83(1986) POSITION- 39 00 46.     (N) 077 12 04.     (W)   SCALED
 JV2812* NAVD 88 ORTHO HEIGHT -   104.104 (meters)      341.55  (feet) ADJUSTED
 JV2812  ______________________________________________________________________
 JV2812  GEOID HEIGHT    -        -31.727 (meters)                     GEOID18
 JV2812  DYNAMIC HEIGHT  -        104.050 (meters)      341.37  (feet) COMP
 JV2812  MODELED GRAVITY -    980,106.4   (mgal)                       NAVD 88
 JV2812
 JV2812  VERT ORDER      -  SECOND    CLASS 0
 JV2812
 JV2812.The horizontal coordinates were scaled from a map and have
 JV2812.an estimated accuracy of +/- 6 seconds.
 JV2812
 JV2812.The orthometric height was determined by differential leveling and
 JV2812.adjusted by the NATIONAL GEODETIC SURVEY
 JV2812.in June 1991.
 JV2812
 JV2812.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2812.GEOID18 height accuracy estimate available here.
 JV2812
 JV2812.Click photographs - Photos may exist for this station.
 JV2812
 JV2812.The dynamic height is computed by dividing the NAVD 88
 JV2812.geopotential number by the normal gravity value computed on the
 JV2812.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2812.degrees latitude (g = 980.6199 gals.).
 JV2812
 JV2812.The modeled gravity was interpolated from observed gravity values.
 JV2812
 JV2812;                    North         East    Units  Estimated Accuracy
 JV2812;SPC MD       -   149,440.      382,580.      MT  (+/- 180 meters Scaled)
 JV2812
 JV2812_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ094204(NAD 83)
 JV2812
 JV2812                          SUPERSEDED SURVEY CONTROL
 JV2812
 JV2812  NGVD 29 (11/26/84)  104.335  (m)          342.31   (f) ADJUSTED    2 0
 JV2812
 JV2812.Superseded values are not recommended for survey control.
 JV2812
 JV2812.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2812.See file dsdata.pdf to determine how the superseded data were derived.
 JV2812
 JV2812_MARKER: S = SPIKE
 JV2812_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2812_SP_SET: TREE
 JV2812_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2812
 JV2812  HISTORY     - Date     Condition        Report By
 JV2812  HISTORY     - UNK      MONUMENTED       WSSC
 JV2812  HISTORY     - 1957     GOOD             WSSC
 JV2812
 JV2812                          STATION DESCRIPTION
 JV2812
 JV2812'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2812'0.6 MI SE FROM POTOMAC.
 JV2812'0.55 MI. S.E. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2812'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC NEAR PEPCO POLE
 JV2812'68714, ON THE S.E. SIDE OF A DRIVE LEADING N.E. IN THE S.E. SIDE
 JV2812'OF A DRIVE LEADING N.E. IN THE S.W. ROOT OF A 30 INCH MAPLE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2813 ***********************************************************************
 JV2813  DESIGNATION -  2809 WSSC
 JV2813  PID         -  JV2813
 JV2813  STATE/COUNTY-  MD/MONTGOMERY
 JV2813  COUNTRY     -  US
 JV2813  USGS QUAD   -  ROCKVILLE (2016)
 JV2813
 JV2813                         *CURRENT SURVEY CONTROL
 JV2813  ______________________________________________________________________
 JV2813* NAD 83(1986) POSITION- 39 00 51.     (N) 077 12 11.     (W)   SCALED
 JV2813* NAVD 88 ORTHO HEIGHT -   116.976 (meters)      383.78  (feet) ADJUSTED
 JV2813  ______________________________________________________________________
 JV2813  GEOID HEIGHT    -        -31.724 (meters)                     GEOID18
 JV2813  DYNAMIC HEIGHT  -        116.915 (meters)      383.58  (feet) COMP
 JV2813  MODELED GRAVITY -    980,106.8   (mgal)                       NAVD 88
 JV2813
 JV2813  VERT ORDER      -  SECOND    CLASS 0
 JV2813
 JV2813.The horizontal coordinates were scaled from a map and have
 JV2813.an estimated accuracy of +/- 6 seconds.
 JV2813
 JV2813.The orthometric height was determined by differential leveling and
 JV2813.adjusted by the NATIONAL GEODETIC SURVEY
 JV2813.in June 1991.
 JV2813
 JV2813.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2813.GEOID18 height accuracy estimate available here.
 JV2813
 JV2813.Click photographs - Photos may exist for this station.
 JV2813
 JV2813.The dynamic height is computed by dividing the NAVD 88
 JV2813.geopotential number by the normal gravity value computed on the
 JV2813.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2813.degrees latitude (g = 980.6199 gals.).
 JV2813
 JV2813.The modeled gravity was interpolated from observed gravity values.
 JV2813
 JV2813;                    North         East    Units  Estimated Accuracy
 JV2813;SPC MD       -   149,600.      382,410.      MT  (+/- 180 meters Scaled)
 JV2813
 JV2813_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ092206(NAD 83)
 JV2813
 JV2813                          SUPERSEDED SURVEY CONTROL
 JV2813
 JV2813  NGVD 29 (11/26/84)  117.206  (m)          384.53   (f) ADJUSTED    2 0
 JV2813
 JV2813.Superseded values are not recommended for survey control.
 JV2813
 JV2813.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2813.See file dsdata.pdf to determine how the superseded data were derived.
 JV2813
 JV2813_MARKER: S = SPIKE
 JV2813_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2813_SP_SET: TREE
 JV2813_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2813
 JV2813  HISTORY     - Date     Condition        Report By
 JV2813  HISTORY     - UNK      MONUMENTED       WSSC
 JV2813  HISTORY     - 1957     GOOD             WSSC
 JV2813
 JV2813                          STATION DESCRIPTION
 JV2813
 JV2813'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2813'0.4 MI SE FROM POTOMAC.
 JV2813'0.4 MI. S.E. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2813'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC IN THE W. ROOT OF A
 JV2813'14 INCH ELM TREE IN THE E. CORNER OF THE INTERSECTION WITH
 JV2813'PERSIMMON TREE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2814 ***********************************************************************
 JV2814  DESIGNATION -  2811 WSSC
 JV2814  PID         -  JV2814
 JV2814  STATE/COUNTY-  MD/MONTGOMERY
 JV2814  COUNTRY     -  US
 JV2814  USGS QUAD   -  ROCKVILLE (2016)
 JV2814
 JV2814                         *CURRENT SURVEY CONTROL
 JV2814  ______________________________________________________________________
 JV2814* NAD 83(1986) POSITION- 39 01 16.     (N) 077 12 48.     (W)   SCALED
 JV2814* NAVD 88 ORTHO HEIGHT -   104.406 (meters)      342.54  (feet) ADJUSTED
 JV2814  ______________________________________________________________________
 JV2814  GEOID HEIGHT    -        -31.713 (meters)                     GEOID18
 JV2814  DYNAMIC HEIGHT  -        104.352 (meters)      342.36  (feet) COMP
 JV2814  MODELED GRAVITY -    980,109.0   (mgal)                       NAVD 88
 JV2814
 JV2814  VERT ORDER      -  SECOND    CLASS 0
 JV2814
 JV2814.The horizontal coordinates were scaled from a map and have
 JV2814.an estimated accuracy of +/- 6 seconds.
 JV2814
 JV2814.The orthometric height was determined by differential leveling and
 JV2814.adjusted by the NATIONAL GEODETIC SURVEY
 JV2814.in June 1991.
 JV2814
 JV2814.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2814.GEOID18 height accuracy estimate available here.
 JV2814
 JV2814.Click photographs - Photos may exist for this station.
 JV2814
 JV2814.The dynamic height is computed by dividing the NAVD 88
 JV2814.geopotential number by the normal gravity value computed on the
 JV2814.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2814.degrees latitude (g = 980.6199 gals.).
 JV2814
 JV2814.The modeled gravity was interpolated from observed gravity values.
 JV2814
 JV2814;                    North         East    Units  Estimated Accuracy
 JV2814;SPC MD       -   150,370.      381,530.      MT  (+/- 180 meters Scaled)
 JV2814
 JV2814_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ083214(NAD 83)
 JV2814
 JV2814                          SUPERSEDED SURVEY CONTROL
 JV2814
 JV2814  NGVD 29 (11/26/84)  104.637  (m)          343.30   (f) ADJUSTED    2 0
 JV2814
 JV2814.Superseded values are not recommended for survey control.
 JV2814
 JV2814.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2814.See file dsdata.pdf to determine how the superseded data were derived.
 JV2814
 JV2814_MARKER: Q = CHISELED SQUARE
 JV2814_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2814_SP_SET: STEP
 JV2814_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2814
 JV2814  HISTORY     - Date     Condition        Report By
 JV2814  HISTORY     - UNK      MONUMENTED       WSSC
 JV2814  HISTORY     - 1957     GOOD             WSSC
 JV2814  HISTORY     - 20020314 MARK NOT FOUND   USPSQD
 JV2814
 JV2814                          STATION DESCRIPTION
 JV2814
 JV2814'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2814'0.3 MI NW FROM POTOMAC.
 JV2814'0.3 MI. N.W. ALONG STATE HIGHWAY 190 (RIVER ROAD) FROM ITS
 JV2814'INTERSECTION WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC IN THE
 JV2814'N.W. CORNER OF THE CONCRETE STEPS LEADING TO THE POTOMAC SCHOOL.
 JV2814
 JV2814                          STATION RECOVERY (2002)
 JV2814
 JV2814'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 JV2814'STEPS REPAVED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2815 ***********************************************************************
 JV2815  DESIGNATION -  2812 WSSC
 JV2815  PID         -  JV2815
 JV2815  STATE/COUNTY-  MD/MONTGOMERY
 JV2815  COUNTRY     -  US
 JV2815  USGS QUAD   -  ROCKVILLE (2016)
 JV2815
 JV2815                         *CURRENT SURVEY CONTROL
 JV2815  ______________________________________________________________________
 JV2815* NAD 83(1986) POSITION- 39 01 27.     (N) 077 13 05.     (W)   SCALED
 JV2815* NAVD 88 ORTHO HEIGHT -   112.322 (meters)      368.51  (feet) ADJUSTED
 JV2815  ______________________________________________________________________
 JV2815  GEOID HEIGHT    -        -31.709 (meters)                     GEOID18
 JV2815  DYNAMIC HEIGHT  -        112.265 (meters)      368.32  (feet) COMP
 JV2815  MODELED GRAVITY -    980,109.7   (mgal)                       NAVD 88
 JV2815
 JV2815  VERT ORDER      -  SECOND    CLASS 0
 JV2815
 JV2815.The horizontal coordinates were scaled from a map and have
 JV2815.an estimated accuracy of +/- 6 seconds.
 JV2815
 JV2815.The orthometric height was determined by differential leveling and
 JV2815.adjusted by the NATIONAL GEODETIC SURVEY
 JV2815.in June 1991.
 JV2815
 JV2815.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2815.GEOID18 height accuracy estimate available here.
 JV2815
 JV2815.Click photographs - Photos may exist for this station.
 JV2815
 JV2815.The dynamic height is computed by dividing the NAVD 88
 JV2815.geopotential number by the normal gravity value computed on the
 JV2815.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2815.degrees latitude (g = 980.6199 gals.).
 JV2815
 JV2815.The modeled gravity was interpolated from observed gravity values.
 JV2815
 JV2815;                    North         East    Units  Estimated Accuracy
 JV2815;SPC MD       -   150,710.      381,120.      MT  (+/- 180 meters Scaled)
 JV2815
 JV2815_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ079217(NAD 83)
 JV2815
 JV2815                          SUPERSEDED SURVEY CONTROL
 JV2815
 JV2815  NGVD 29 (11/26/84)  112.553  (m)          369.27   (f) ADJUSTED    2 0
 JV2815
 JV2815.Superseded values are not recommended for survey control.
 JV2815
 JV2815.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2815.See file dsdata.pdf to determine how the superseded data were derived.
 JV2815
 JV2815_MARKER: Q = CHISELED SQUARE
 JV2815_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2815_SP_SET: HEADWALL
 JV2815_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2815
 JV2815  HISTORY     - Date     Condition        Report By
 JV2815  HISTORY     - UNK      MONUMENTED       WSSC
 JV2815  HISTORY     - 1957     GOOD             WSSC
 JV2815  HISTORY     - 20020314 MARK NOT FOUND   USPSQD
 JV2815  HISTORY     - 20040828 MARK NOT FOUND   GEOCAC
 JV2815
 JV2815                          STATION DESCRIPTION
 JV2815
 JV2815'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2815'0.6 MI NW FROM POTOMAC.
 JV2815'0.6 MI. N.W. ALONG STATE HIGHWAY 190 (RIVER ROAD) FROM ITS
 JV2815'INTERSECTION WITH STATE HIGHWAY 189 (FALLS ROAD) AT POTOMAC, IN
 JV2815'THE CONCRETE HEADWALL ON THE S. SIDE OF THE HIGHWAY.
 JV2815
 JV2815                          STATION RECOVERY (2002)
 JV2815
 JV2815'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 JV2815'NO HEADWALL - ROAD WIDENED
 JV2815
 JV2815                          STATION RECOVERY (2004)
 JV2815
 JV2815'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV2815'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2816 ***********************************************************************
 JV2816  DESIGNATION -  2813 WSSC
 JV2816  PID         -  JV2816
 JV2816  STATE/COUNTY-  MD/MONTGOMERY
 JV2816  COUNTRY     -  US
 JV2816  USGS QUAD   -  ROCKVILLE (2016)
 JV2816
 JV2816                         *CURRENT SURVEY CONTROL
 JV2816  ______________________________________________________________________
 JV2816* NAD 83(1986) POSITION- 39 01 37.     (N) 077 13 13.     (W)   SCALED
 JV2816* NAVD 88 ORTHO HEIGHT -   113.366 (meters)      371.94  (feet) ADJUSTED
 JV2816  ______________________________________________________________________
 JV2816  GEOID HEIGHT    -        -31.708 (meters)                     GEOID18
 JV2816  DYNAMIC HEIGHT  -        113.308 (meters)      371.74  (feet) COMP
 JV2816  MODELED GRAVITY -    980,110.1   (mgal)                       NAVD 88
 JV2816
 JV2816  VERT ORDER      -  SECOND    CLASS 0
 JV2816
 JV2816.The horizontal coordinates were scaled from a map and have
 JV2816.an estimated accuracy of +/- 6 seconds.
 JV2816
 JV2816.The orthometric height was determined by differential leveling and
 JV2816.adjusted by the NATIONAL GEODETIC SURVEY
 JV2816.in June 1991.
 JV2816
 JV2816.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2816.GEOID18 height accuracy estimate available here.
 JV2816
 JV2816.Click photographs - Photos may exist for this station.
 JV2816
 JV2816.The dynamic height is computed by dividing the NAVD 88
 JV2816.geopotential number by the normal gravity value computed on the
 JV2816.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2816.degrees latitude (g = 980.6199 gals.).
 JV2816
 JV2816.The modeled gravity was interpolated from observed gravity values.
 JV2816
 JV2816;                    North         East    Units  Estimated Accuracy
 JV2816;SPC MD       -   151,020.      380,930.      MT  (+/- 180 meters Scaled)
 JV2816
 JV2816_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ078221(NAD 83)
 JV2816
 JV2816                          SUPERSEDED SURVEY CONTROL
 JV2816
 JV2816  NGVD 29 (11/26/84)  113.596  (m)          372.69   (f) ADJUSTED    2 0
 JV2816
 JV2816.Superseded values are not recommended for survey control.
 JV2816
 JV2816.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2816.See file dsdata.pdf to determine how the superseded data were derived.
 JV2816
 JV2816_MARKER: Q = CHISELED SQUARE
 JV2816_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2816_SP_SET: HEADWALL
 JV2816_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2816
 JV2816  HISTORY     - Date     Condition        Report By
 JV2816  HISTORY     - UNK      MONUMENTED       WSSC
 JV2816  HISTORY     - 1957     GOOD             WSSC
 JV2816  HISTORY     - 20020314 MARK NOT FOUND   USPSQD
 JV2816
 JV2816                          STATION DESCRIPTION
 JV2816
 JV2816'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2816'AT POTOMAC.
 JV2816'0.8 MI. N.W. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2816'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC.  0.1 MI. N.W. OF
 JV2816'THE JUNCTION WITH NORTON ROAD IN THE CONCRETE HEADWALL ON THE
 JV2816'S.W. SIDE OF THE HIGHWAY.
 JV2816
 JV2816                          STATION RECOVERY (2002)
 JV2816
 JV2816'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 JV2816'NO HEADWALL - ROAD WIDENED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2817 ***********************************************************************
 JV2817  DESIGNATION -  2814 WSSC
 JV2817  PID         -  JV2817
 JV2817  STATE/COUNTY-  MD/MONTGOMERY
 JV2817  COUNTRY     -  US
 JV2817  USGS QUAD   -  ROCKVILLE (2016)
 JV2817
 JV2817                         *CURRENT SURVEY CONTROL
 JV2817  ______________________________________________________________________
 JV2817* NAD 83(1986) POSITION- 39 01 45.     (N) 077 13 37.     (W)   SCALED
 JV2817* NAVD 88 ORTHO HEIGHT -   118.491 (meters)      388.75  (feet) ADJUSTED
 JV2817  ______________________________________________________________________
 JV2817  GEOID HEIGHT    -        -31.707 (meters)                     GEOID18
 JV2817  DYNAMIC HEIGHT  -        118.430 (meters)      388.55  (feet) COMP
 JV2817  MODELED GRAVITY -    980,110.6   (mgal)                       NAVD 88
 JV2817
 JV2817  VERT ORDER      -  SECOND    CLASS 0
 JV2817
 JV2817.The horizontal coordinates were scaled from a map and have
 JV2817.an estimated accuracy of +/- 6 seconds.
 JV2817
 JV2817.The orthometric height was determined by differential leveling and
 JV2817.adjusted by the NATIONAL GEODETIC SURVEY
 JV2817.in June 1991.
 JV2817
 JV2817.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2817.GEOID18 height accuracy estimate available here.
 JV2817
 JV2817.Click photographs - Photos may exist for this station.
 JV2817
 JV2817.The dynamic height is computed by dividing the NAVD 88
 JV2817.geopotential number by the normal gravity value computed on the
 JV2817.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2817.degrees latitude (g = 980.6199 gals.).
 JV2817
 JV2817.The modeled gravity was interpolated from observed gravity values.
 JV2817
 JV2817;                    North         East    Units  Estimated Accuracy
 JV2817;SPC MD       -   151,270.      380,350.      MT  (+/- 180 meters Scaled)
 JV2817
 JV2817_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ072223(NAD 83)
 JV2817
 JV2817                          SUPERSEDED SURVEY CONTROL
 JV2817
 JV2817  NGVD 29 (11/26/84)  118.720  (m)          389.50   (f) ADJUSTED    2 0
 JV2817
 JV2817.Superseded values are not recommended for survey control.
 JV2817
 JV2817.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2817.See file dsdata.pdf to determine how the superseded data were derived.
 JV2817
 JV2817_MARKER: Q = CHISELED SQUARE
 JV2817_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2817_SP_SET: HEADWALL
 JV2817_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2817
 JV2817  HISTORY     - Date     Condition        Report By
 JV2817  HISTORY     - UNK      MONUMENTED       WSSC
 JV2817  HISTORY     - 1957     GOOD             WSSC
 JV2817  HISTORY     - 20020314 MARK NOT FOUND   USPSQD
 JV2817
 JV2817                          STATION DESCRIPTION
 JV2817
 JV2817'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2817'1.3 MI NW FROM POTOMAC.
 JV2817'1.3 MI. N.W. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2817'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC, IN THE CONCRETE
 JV2817'HEADWALL ON THE S.W. SIDE OF THE HIGHWAY.
 JV2817
 JV2817                          STATION RECOVERY (2002)
 JV2817
 JV2817'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 JV2817'NO HEADWALL - ROAD WIDENED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2818 ***********************************************************************
 JV2818  DESIGNATION -  2815 WSSC
 JV2818  PID         -  JV2818
 JV2818  STATE/COUNTY-  MD/MONTGOMERY
 JV2818  COUNTRY     -  US
 JV2818  USGS QUAD   -  ROCKVILLE (2016)
 JV2818
 JV2818                         *CURRENT SURVEY CONTROL
 JV2818  ______________________________________________________________________
 JV2818* NAD 83(1986) POSITION- 39 01 54.     (N) 077 13 59.     (W)   SCALED
 JV2818* NAVD 88 ORTHO HEIGHT -    98.136 (meters)      321.97  (feet) ADJUSTED
 JV2818  ______________________________________________________________________
 JV2818  GEOID HEIGHT    -        -31.708 (meters)                     GEOID18
 JV2818  DYNAMIC HEIGHT  -         98.085 (meters)      321.80  (feet) COMP
 JV2818  MODELED GRAVITY -    980,110.9   (mgal)                       NAVD 88
 JV2818
 JV2818  VERT ORDER      -  SECOND    CLASS 0
 JV2818
 JV2818.The horizontal coordinates were scaled from a map and have
 JV2818.an estimated accuracy of +/- 6 seconds.
 JV2818
 JV2818.The orthometric height was determined by differential leveling and
 JV2818.adjusted by the NATIONAL GEODETIC SURVEY
 JV2818.in June 1991.
 JV2818
 JV2818.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2818.GEOID18 height accuracy estimate available here.
 JV2818
 JV2818.Click photographs - Photos may exist for this station.
 JV2818
 JV2818.The dynamic height is computed by dividing the NAVD 88
 JV2818.geopotential number by the normal gravity value computed on the
 JV2818.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2818.degrees latitude (g = 980.6199 gals.).
 JV2818
 JV2818.The modeled gravity was interpolated from observed gravity values.
 JV2818
 JV2818;                    North         East    Units  Estimated Accuracy
 JV2818;SPC MD       -   151,550.      379,820.      MT  (+/- 180 meters Scaled)
 JV2818
 JV2818_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ067226(NAD 83)
 JV2818
 JV2818                          SUPERSEDED SURVEY CONTROL
 JV2818
 JV2818  NGVD 29 (11/26/84)   98.365  (m)          322.72   (f) ADJUSTED    2 0
 JV2818
 JV2818.Superseded values are not recommended for survey control.
 JV2818
 JV2818.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2818.See file dsdata.pdf to determine how the superseded data were derived.
 JV2818
 JV2818_MARKER: Q = CHISELED SQUARE
 JV2818_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2818_SP_SET: HEADWALL
 JV2818_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2818
 JV2818  HISTORY     - Date     Condition        Report By
 JV2818  HISTORY     - UNK      MONUMENTED       WSSC
 JV2818  HISTORY     - 1957     GOOD             WSSC
 JV2818  HISTORY     - 20020314 MARK NOT FOUND   USPSQD
 JV2818
 JV2818                          STATION DESCRIPTION
 JV2818
 JV2818'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2818'1.7 MI NW FROM POTOMAC.
 JV2818'1.7 MI. N.W. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2818'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC, IN THE HEAD WALL IN
 JV2818'THE N. CORNER OF THE JUNCTION WITH PINEY MEETINGHOUSE ROAD.
 JV2818
 JV2818                          STATION RECOVERY (2002)
 JV2818
 JV2818'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 JV2818'NO HEADWALL - ROAD WIDENED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2819 ***********************************************************************
 JV2819  DESIGNATION -  2816 WSSC
 JV2819  PID         -  JV2819
 JV2819  STATE/COUNTY-  MD/MONTGOMERY
 JV2819  COUNTRY     -  US
 JV2819  USGS QUAD   -  ROCKVILLE (2016)
 JV2819
 JV2819                         *CURRENT SURVEY CONTROL
 JV2819  ______________________________________________________________________
 JV2819* NAD 83(1986) POSITION- 39 02 05.     (N) 077 14 25.     (W)   SCALED
 JV2819* NAVD 88 ORTHO HEIGHT -    87.485 (meters)      287.02  (feet) ADJUSTED
 JV2819  ______________________________________________________________________
 JV2819  GEOID HEIGHT    -        -31.710 (meters)                     GEOID18
 JV2819  DYNAMIC HEIGHT  -         87.439 (meters)      286.87  (feet) COMP
 JV2819  MODELED GRAVITY -    980,110.8   (mgal)                       NAVD 88
 JV2819
 JV2819  VERT ORDER      -  SECOND    CLASS 0
 JV2819
 JV2819.The horizontal coordinates were scaled from a map and have
 JV2819.an estimated accuracy of +/- 6 seconds.
 JV2819
 JV2819.The orthometric height was determined by differential leveling and
 JV2819.adjusted by the NATIONAL GEODETIC SURVEY
 JV2819.in June 1991.
 JV2819
 JV2819.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2819.GEOID18 height accuracy estimate available here.
 JV2819
 JV2819.Click photographs - Photos may exist for this station.
 JV2819
 JV2819.The dynamic height is computed by dividing the NAVD 88
 JV2819.geopotential number by the normal gravity value computed on the
 JV2819.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2819.degrees latitude (g = 980.6199 gals.).
 JV2819
 JV2819.The modeled gravity was interpolated from observed gravity values.
 JV2819
 JV2819;                    North         East    Units  Estimated Accuracy
 JV2819;SPC MD       -   151,890.      379,200.      MT  (+/- 180 meters Scaled)
 JV2819
 JV2819_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ060230(NAD 83)
 JV2819
 JV2819                          SUPERSEDED SURVEY CONTROL
 JV2819
 JV2819  NGVD 29 (11/26/84)   87.714  (m)          287.77   (f) ADJUSTED    2 0
 JV2819
 JV2819.Superseded values are not recommended for survey control.
 JV2819
 JV2819.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2819.See file dsdata.pdf to determine how the superseded data were derived.
 JV2819
 JV2819_MARKER: S = SPIKE
 JV2819_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2819_SP_SET: TREE
 JV2819_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2819
 JV2819  HISTORY     - Date     Condition        Report By
 JV2819  HISTORY     - UNK      MONUMENTED       WSSC
 JV2819  HISTORY     - 1957     GOOD             WSSC
 JV2819
 JV2819                          STATION DESCRIPTION
 JV2819
 JV2819'DESCRIBED BY WASH SUBURB SAN COMM 1957
 JV2819'2.1 MI NW FROM POTOMAC.
 JV2819'2.1 MI. N.W. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2819'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC, AT THE JUNCTION OF
 JV2819'THE HIGHWAY AND SWAINS LOCK ROAD.  A R.R. SPIKE IN W. SIDE OF
 JV2819'A 4-INCH TWIN POPLAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2823 ***********************************************************************
 JV2823  DESIGNATION -  2850=BM A WSSC
 JV2823  PID         -  JV2823
 JV2823  STATE/COUNTY-  MD/MONTGOMERY
 JV2823  COUNTRY     -  US
 JV2823  USGS QUAD   -  ROCKVILLE (2016)
 JV2823
 JV2823                         *CURRENT SURVEY CONTROL
 JV2823  ______________________________________________________________________
 JV2823* NAD 83(1986) POSITION- 39 02 46.     (N) 077 13 04.     (W)   SCALED
 JV2823* NAVD 88 ORTHO HEIGHT -    77.659 (meters)      254.79  (feet) ADJUSTED
 JV2823  ______________________________________________________________________
 JV2823  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV2823  DYNAMIC HEIGHT  -         77.618 (meters)      254.65  (feet) COMP
 JV2823  MODELED GRAVITY -    980,110.5   (mgal)                       NAVD 88
 JV2823
 JV2823  VERT ORDER      -  SECOND    CLASS 0
 JV2823
 JV2823.The horizontal coordinates were scaled from a map and have
 JV2823.an estimated accuracy of +/- 6 seconds.
 JV2823
 JV2823.The orthometric height was determined by differential leveling and
 JV2823.adjusted by the NATIONAL GEODETIC SURVEY
 JV2823.in June 1991.
 JV2823
 JV2823.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2823.GEOID18 height accuracy estimate available here.
 JV2823
 JV2823.Click photographs - Photos may exist for this station.
 JV2823
 JV2823.The dynamic height is computed by dividing the NAVD 88
 JV2823.geopotential number by the normal gravity value computed on the
 JV2823.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2823.degrees latitude (g = 980.6199 gals.).
 JV2823
 JV2823.The modeled gravity was interpolated from observed gravity values.
 JV2823
 JV2823;                    North         East    Units  Estimated Accuracy
 JV2823;SPC MD       -   153,150.      381,150.      MT  (+/- 180 meters Scaled)
 JV2823
 JV2823_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ080242(NAD 83)
 JV2823
 JV2823                          SUPERSEDED SURVEY CONTROL
 JV2823
 JV2823  NGVD 29 (11/26/84)   77.886  (m)          255.53   (f) ADJUSTED    2 0
 JV2823
 JV2823.Superseded values are not recommended for survey control.
 JV2823
 JV2823.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2823.See file dsdata.pdf to determine how the superseded data were derived.
 JV2823
 JV2823_MARKER: Q = CHISELED SQUARE
 JV2823_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2823_SP_SET: BRIDGE
 JV2823_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2823
 JV2823  HISTORY     - Date     Condition        Report By
 JV2823  HISTORY     - UNK      MONUMENTED       WSSC
 JV2823  HISTORY     - 1965     GOOD             WSSC
 JV2823
 JV2823                          STATION DESCRIPTION
 JV2823
 JV2823'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2823'2.4 MI NW FROM POTOMAC.
 JV2823'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2823'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC AND THENCE 1.7 MI. N.W.
 JV2823'ALONG SOUTH GLEN ROAD IN THE S.W. CONCRETE SUPPORT OF BRIDGE OVER
 JV2823'WATTS BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2826 ***********************************************************************
 JV2826  DESIGNATION -  2851=BM B WSSC
 JV2826  PID         -  JV2826
 JV2826  STATE/COUNTY-  MD/MONTGOMERY
 JV2826  COUNTRY     -  US
 JV2826  USGS QUAD   -  ROCKVILLE (2016)
 JV2826
 JV2826                         *CURRENT SURVEY CONTROL
 JV2826  ______________________________________________________________________
 JV2826* NAD 83(1986) POSITION- 39 02 49.     (N) 077 13 39.     (W)   SCALED
 JV2826* NAVD 88 ORTHO HEIGHT -    72.289 (meters)      237.17  (feet) ADJUSTED
 JV2826  ______________________________________________________________________
 JV2826  GEOID HEIGHT    -        -31.704 (meters)                     GEOID18
 JV2826  DYNAMIC HEIGHT  -         72.251 (meters)      237.04  (feet) COMP
 JV2826  MODELED GRAVITY -    980,110.6   (mgal)                       NAVD 88
 JV2826
 JV2826  VERT ORDER      -  SECOND    CLASS 0
 JV2826
 JV2826.The horizontal coordinates were scaled from a map and have
 JV2826.an estimated accuracy of +/- 6 seconds.
 JV2826
 JV2826.The orthometric height was determined by differential leveling and
 JV2826.adjusted by the NATIONAL GEODETIC SURVEY
 JV2826.in June 1991.
 JV2826
 JV2826.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2826.GEOID18 height accuracy estimate available here.
 JV2826
 JV2826.Click photographs - Photos may exist for this station.
 JV2826
 JV2826.The dynamic height is computed by dividing the NAVD 88
 JV2826.geopotential number by the normal gravity value computed on the
 JV2826.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2826.degrees latitude (g = 980.6199 gals.).
 JV2826
 JV2826.The modeled gravity was interpolated from observed gravity values.
 JV2826
 JV2826;                    North         East    Units  Estimated Accuracy
 JV2826;SPC MD       -   153,240.      380,310.      MT  (+/- 180 meters Scaled)
 JV2826
 JV2826_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ072243(NAD 83)
 JV2826
 JV2826                          SUPERSEDED SURVEY CONTROL
 JV2826
 JV2826  NGVD 29 (11/26/84)   72.516  (m)          237.91   (f) ADJUSTED    2 0
 JV2826
 JV2826.Superseded values are not recommended for survey control.
 JV2826
 JV2826.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2826.See file dsdata.pdf to determine how the superseded data were derived.
 JV2826
 JV2826_MARKER: Q = CHISELED SQUARE
 JV2826_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2826_SP_SET: HEADWALL
 JV2826_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2826
 JV2826  HISTORY     - Date     Condition        Report By
 JV2826  HISTORY     - UNK      MONUMENTED       WSSC
 JV2826  HISTORY     - 1965     GOOD             WSSC
 JV2826
 JV2826                          STATION DESCRIPTION
 JV2826
 JV2826'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2826'3 MI NW FROM POTOMAC.
 JV2826'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2826'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 1.7 MI. ALONG
 JV2826'SOUTH GLEN ROAD, THENCE 0.60 MI. W. ALONG GLEN ROAD.  0.30 MI.
 JV2826'E. OF THE JUNCTION WITH PINEY MEETINGHOUSE ROAD IN THE TOP AND
 JV2826'CENTER LINE OF THE N. CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6601 ***********************************************************************
 DL6601  DESIGNATION -  28AA
 DL6601  PID         -  DL6601
 DL6601  STATE/COUNTY-  MD/HOWARD
 DL6601  COUNTRY     -  US
 DL6601  USGS QUAD   -  SYKESVILLE (2016)
 DL6601
 DL6601                         *CURRENT SURVEY CONTROL
 DL6601  ______________________________________________________________________
 DL6601* NAD 83(1986) POSITION- 39 14 59.11   (N) 076 58 44.55   (W)   HD_HELD1
 DL6601* NAVD 88 ORTHO HEIGHT -   172.999 (meters)      567.58  (feet) ADJUSTED
 DL6601  ______________________________________________________________________
 DL6601  GEOID HEIGHT    -        -31.937 (meters)                     GEOID18
 DL6601  DYNAMIC HEIGHT  -        172.906 (meters)      567.28  (feet) COMP
 DL6601  MODELED GRAVITY -    980,087.0   (mgal)                       NAVD 88
 DL6601
 DL6601  VERT ORDER      -  SECOND    CLASS I
 DL6601
 DL6601.The horizontal coordinates were determined by differentially corrected
 DL6601.hand held GPS observations or other comparable positioning techniques
 DL6601.and have an estimated accuracy of +/- 3 meters.
 DL6601
 DL6601.The orthometric height was determined by differential leveling and
 DL6601.adjusted by the NATIONAL GEODETIC SURVEY
 DL6601.in March 2010.
 DL6601
 DL6601.No vertical observational check was made to the station.
 DL6601
 DL6601.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6601.GEOID18 height accuracy estimate available here.
 DL6601
 DL6601.Click photographs - Photos may exist for this station.
 DL6601
 DL6601.The dynamic height is computed by dividing the NAVD 88
 DL6601.geopotential number by the normal gravity value computed on the
 DL6601.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6601.degrees latitude (g = 980.6199 gals.).
 DL6601
 DL6601.The modeled gravity was interpolated from observed gravity values.
 DL6601
 DL6601;                    North         East    Units  Estimated Accuracy
 DL6601;SPC MD       -   175,732.3     401,809.1     MT  (+/- 3 meters HH1 GPS) 
 DL6601
 DL6601_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2922846358(NAD 83)
 DL6601
 DL6601                          SUPERSEDED SURVEY CONTROL
 DL6601
 DL6601.No superseded survey control is available for this station.
 DL6601
 DL6601_MARKER: DD = SURVEY DISK
 DL6601_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6601_STAMPING: 5/92 28AA
 DL6601_MARK LOGO: MD-027
 DL6601_PROJECTION: RECESSED 8 CENTIMETERS
 DL6601_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6601_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6601+STABILITY: SURFACE MOTION
 DL6601_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6601+SATELLITE: SATELLITE OBSERVATIONS - June 04, 2016
 DL6601
 DL6601  HISTORY     - Date     Condition        Report By
 DL6601  HISTORY     - 199205   MONUMENTED       MD-027
 DL6601  HISTORY     - 20070425 GOOD             MDSHA
 DL6601  HISTORY     - 20160604 GOOD             USPSQD
 DL6601
 DL6601                          STATION DESCRIPTION
 DL6601
 DL6601'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6601'THE STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) NORTH-NORTHWEST OF
 DL6601'CLARKSVILLE, 1.2 MI (1.9 KM) SOUTHEAST OF GLENEIG AND 0.8 MI (1.3 KM)
 DL6601'NORTH-NORTHEAST OF DAYTON.
 DL6601'
 DL6601'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 32 AND STATE HIGHWAY
 DL6601'108 IN CLARKSVILLE, GO NORTHWEST ON STATE HIGHWAY 32 FOR 3.8 MI (6.1
 DL6601'KM) TO THE ENTRANCE TO THE STATE HIGHWAY GARAGE ON THE RIGHT AND THE
 DL6601'STATION ON THE LEFT IN A GRASS ISLAND FORMED BY STATE HIGHWAY 32 AND A
 DL6601'U-TURN LANE.
 DL6601'
 DL6601'IT IS 4.0 FT (1.2 M) SOUTHWEST OF THE SOUTHWEST EDGE OF THE SOUTHWEST
 DL6601'SHOULDER OF THE HIGHWAY, 98.0 FT (29.9 M) NORTHWEST OF THE CENTERLINE
 DL6601'OF THE U-TURN LANE LEADING INTO THE STATE HIGHWAY GARAGE AND SET IN
 DL6601'THE TOP OF A 10-INCH (25 CM) ROUND CONCRETE MONUMENT.
 DL6601
 DL6601                          STATION RECOVERY (2016)
 DL6601
 DL6601'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 DL6601'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6603 ***********************************************************************
 DL6603  DESIGNATION -  28EA
 DL6603  PID         -  DL6603
 DL6603  STATE/COUNTY-  MD/HOWARD
 DL6603  COUNTRY     -  US
 DL6603  USGS QUAD   -  CLARKSVILLE (2016)
 DL6603
 DL6603                         *CURRENT SURVEY CONTROL
 DL6603  ______________________________________________________________________
 DL6603* NAD 83(1986) POSITION- 39 14 15.72   (N) 076 58 30.18   (W)   HD_HELD1
 DL6603* NAVD 88 ORTHO HEIGHT -   147.836 (meters)      485.03  (feet) ADJUSTED
 DL6603  ______________________________________________________________________
 DL6603  GEOID HEIGHT    -        -31.950 (meters)                     GEOID18
 DL6603  DYNAMIC HEIGHT  -        147.757 (meters)      484.77  (feet) COMP
 DL6603  MODELED GRAVITY -    980,088.2   (mgal)                       NAVD 88
 DL6603
 DL6603  VERT ORDER      -  SECOND    CLASS I
 DL6603
 DL6603.The horizontal coordinates were determined by differentially corrected
 DL6603.hand held GPS observations or other comparable positioning techniques
 DL6603.and have an estimated accuracy of +/- 3 meters.
 DL6603
 DL6603.The orthometric height was determined by differential leveling and
 DL6603.adjusted by the NATIONAL GEODETIC SURVEY
 DL6603.in March 2010.
 DL6603
 DL6603.No vertical observational check was made to the station.
 DL6603
 DL6603.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6603.GEOID18 height accuracy estimate available here.
 DL6603
 DL6603.Click photographs - Photos may exist for this station.
 DL6603
 DL6603.The dynamic height is computed by dividing the NAVD 88
 DL6603.geopotential number by the normal gravity value computed on the
 DL6603.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6603.degrees latitude (g = 980.6199 gals.).
 DL6603
 DL6603.The modeled gravity was interpolated from observed gravity values.
 DL6603
 DL6603;                    North         East    Units  Estimated Accuracy
 DL6603;SPC MD       -   174,394.4     402,154.0     MT  (+/- 3 meters HH1 GPS) 
 DL6603
 DL6603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2954345013(NAD 83)
 DL6603
 DL6603                          SUPERSEDED SURVEY CONTROL
 DL6603
 DL6603.No superseded survey control is available for this station.
 DL6603
 DL6603_MARKER: DD = SURVEY DISK
 DL6603_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6603_STAMPING: 5/92 28EA
 DL6603_MARK LOGO: MD-027
 DL6603_PROJECTION: RECESSED 3 CENTIMETERS
 DL6603_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6603_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6603+STABILITY: SURFACE MOTION
 DL6603_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6603+SATELLITE: SATELLITE OBSERVATIONS - April 25, 2007
 DL6603
 DL6603  HISTORY     - Date     Condition        Report By
 DL6603  HISTORY     - 199205   MONUMENTED       MD-027
 DL6603  HISTORY     - 20070425 GOOD             MDSHA
 DL6603
 DL6603                          STATION DESCRIPTION
 DL6603
 DL6603'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6603'THE STATION IS LOCATED ABOUT 2.8 MI (4.5 KM) NORTHWEST OF CLARKSVILLE,
 DL6603'2.1 MI (3.4 KM) SOUTH-SOUTHEAST OF GLENEIG AND 0.6 MI (1.0 KM) EAST OF
 DL6603'DAYTON.
 DL6603'
 DL6603'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 32 AND STATE HIGHWAY
 DL6603'108 IN CLARKSVILLE, GO NORTHWEST ALONG STATE HIGHWAY 32 FOR 2.95 MI
 DL6603'(4.7 KM) TO THE STATION ON THE RIGHT.  THE STATION IS ALSO 0.55 MI
 DL6603'(0.9 KM) NORTHWEST OF WEST LINDEN ROAD.
 DL6603'
 DL6603'IT IS 25.3 FT (7.7 M) EAST-NORTHEAST OF THE CENTERLINE OF THE HIGHWAY,
 DL6603'93.9 FT (28.6 M) NORTHWEST OF A WOODEN GUARD RAIL POST LOCATED AT THE
 DL6603'NORTHWEST END OF A METAL GUARD RAIL, 21.6 FT (6.6 M) SOUTHWEST OF A
 DL6603'FIBERGLASS WITNESS POST, 3.5 FT (1.1 M) SOUTHWEST OF THE TOP OF A FILL
 DL6603'BANK AND SET IN THE TOP OF A 10-INCH (25 CM) ROUND CONCRETE MONUMENT
 DL6603'ABOUT 0.5 FT (0.2 M) LOWER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0787 ***********************************************************************
 JW0787  DESIGNATION -  29
 JW0787  PID         -  JW0787
 JW0787  STATE/COUNTY-  MD/GARRETT
 JW0787  COUNTRY     -  US
 JW0787  USGS QUAD   -  WESTERNPORT (2016)
 JW0787
 JW0787                         *CURRENT SURVEY CONTROL
 JW0787  ______________________________________________________________________
 JW0787* NAD 83(1986) POSITION- 39 28 37.8    (N) 079 04 06.3    (W)   HD_HELD2
 JW0787* NAVD 88 ORTHO HEIGHT -   307.453 (meters)     1008.70  (feet) ADJUSTED
 JW0787  ______________________________________________________________________
 JW0787  GEOID HEIGHT    -        -31.949 (meters)                     GEOID18
 JW0787  DYNAMIC HEIGHT  -        307.243 (meters)     1008.01  (feet) COMP
 JW0787  MODELED GRAVITY -    979,938.0   (mgal)                       NAVD 88
 JW0787
 JW0787  VERT ORDER      -  FIRST     CLASS II
 JW0787
 JW0787.The horizontal coordinates were established by autonomous hand held GPS
 JW0787.observations and have an estimated accuracy of +/- 10 meters.
 JW0787
 JW0787.The orthometric height was determined by differential leveling and
 JW0787.adjusted by the NATIONAL GEODETIC SURVEY
 JW0787.in June 1991.
 JW0787
 JW0787.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0787.GEOID18 height accuracy estimate available here.
 JW0787
 JW0787.Click photographs - Photos may exist for this station.
 JW0787
 JW0787.The dynamic height is computed by dividing the NAVD 88
 JW0787.geopotential number by the normal gravity value computed on the
 JW0787.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0787.degrees latitude (g = 980.6199 gals.).
 JW0787
 JW0787.The modeled gravity was interpolated from observed gravity values.
 JW0787
 JW0787;                    North         East    Units  Estimated Accuracy
 JW0787;SPC MD       -   202,996.      222,045.      MT  (+/- 10 meters HH2 GPS)
 JW0787
 JW0787_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD6613671511(NAD 83)
 JW0787
 JW0787                          SUPERSEDED SURVEY CONTROL
 JW0787
 JW0787  NGVD 29 (??/??/92)  307.618  (m)         1009.24   (f) ADJ UNCH    1 2
 JW0787
 JW0787.Superseded values are not recommended for survey control.
 JW0787
 JW0787.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0787.See file dsdata.pdf to determine how the superseded data were derived.
 JW0787
 JW0787_MARKER: B = BOLT
 JW0787_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW0787_SP_SET: ABUTMENT
 JW0787_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0787
 JW0787  HISTORY     - Date     Condition        Report By
 JW0787  HISTORY     - UNK      MONUMENTED       BORR
 JW0787  HISTORY     - 1935     GOOD             CGS
 JW0787  HISTORY     - 1935     GOOD             CGS
 JW0787  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0787  HISTORY     - 20230521 GOOD             PROFLN
 JW0787
 JW0787                          STATION DESCRIPTION
 JW0787
 JW0787'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0787'0.5 MI E FROM BLOOMINGTON.
 JW0787'IN MINERAL COUNTY, WEST VIRGINIA, ABOUT 1/2 MILE EAST ALONG THE
 JW0787'BALTIMORE AND OHIO RAILROAD FROM BLOOMINGTON, GARRETT COUNTY,
 JW0787'MARYLAND, AT BRIDGE NO. 79, ON THE NORTHWEST CORNER OF THE WEST
 JW0787'ABUTMENT, IN THE SECOND STEP FROM THE TOP, 10 FEET NORTH OF THE
 JW0787'CENTER LINE OF THE TRACK, AND ABOUT 2 FEET LOWER THAN THE TRACK.
 JW0787'A COPPER BOLT.
 JW0787
 JW0787                          STATION RECOVERY (1935)
 JW0787
 JW0787'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JW0787'RECOVERED IN GOOD CONDITION.
 JW0787
 JW0787                          STATION RECOVERY (1983)
 JW0787
 JW0787'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0787'NOT RECOVERED, NO SIGN OF THE COPPER BOLT COULD BE FOUND.
 JW0787
 JW0787                          STATION RECOVERY (2023)
 JW0787
 JW0787'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2023 (JRO)
 JW0787'IT IS RECOMMENDED TO PARK AT A LARGE PAVED-GRAVEL LOT ON THE EASTERLY
 JW0787'SIDE OF MD ROUTE 135/WESTERLY SIDE OF THE POTOMAC RIVER - COORDINATES
 JW0787'OF THE TURNOFF TO THE WOOD STORAGE LOT ARE N 39 28 44, W 079 04 08 -
 JW0787'THEN WALK SOUTHEAST UP THE STEEP EMBANKMENT TO THE MARK.  THE MARK IS
 JW0787'IN A CHALLENGING, POSSIBLY DANGEROUS SPOT, 30 FT (9.1 M) ABOVE A SHEER
 JW0787'DROP-OFF TO THE RIVER.  IT WOULD BE EASY TO SLIDE ON THE BALLAST OVER
 JW0787'THE EDGE.  ONE WOULD NEED GOOD BALANCE TO HOLD A ROD ON THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1542 ***********************************************************************
 JV1542  DESIGNATION -  29 PRR
 JV1542  PID         -  JV1542
 JV1542  STATE/COUNTY-  MD/BALTIMORE
 JV1542  COUNTRY     -  US
 JV1542  USGS QUAD   -  NEW FREEDOM (2019)
 JV1542
 JV1542                         *CURRENT SURVEY CONTROL
 JV1542  ______________________________________________________________________
 JV1542* NAD 83(1986) POSITION- 39 37 38.5    (N) 076 38 02.7    (W)   HD_HELD2
 JV1542* NAVD 88 ORTHO HEIGHT -   107.656 (meters)      353.20  (feet) ADJUSTED
 JV1542  ______________________________________________________________________
 JV1542  GEOID HEIGHT    -        -32.319 (meters)                     GEOID18
 JV1542  DYNAMIC HEIGHT  -        107.603 (meters)      353.03  (feet) COMP
 JV1542  MODELED GRAVITY -    980,129.6   (mgal)                       NAVD 88
 JV1542
 JV1542  VERT ORDER      -  SECOND    CLASS 0
 JV1542
 JV1542.The horizontal coordinates were established by autonomous hand held GPS
 JV1542.observations and have an estimated accuracy of +/- 10 meters.
 JV1542
 JV1542.The orthometric height was determined by differential leveling and
 JV1542.adjusted by the NATIONAL GEODETIC SURVEY
 JV1542.in June 1991.
 JV1542
 JV1542.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1542.GEOID18 height accuracy estimate available here.
 JV1542
 JV1542.Click photographs - Photos may exist for this station.
 JV1542
 JV1542.The dynamic height is computed by dividing the NAVD 88
 JV1542.geopotential number by the normal gravity value computed on the
 JV1542.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1542.degrees latitude (g = 980.6199 gals.).
 JV1542
 JV1542.The modeled gravity was interpolated from observed gravity values.
 JV1542
 JV1542;                    North         East    Units  Estimated Accuracy
 JV1542;SPC MD       -   217,719.      431,417.      MT  (+/- 10 meters HH2 GPS)
 JV1542
 JV1542_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5975687674(NAD 83)
 JV1542
 JV1542                          SUPERSEDED SURVEY CONTROL
 JV1542
 JV1542  NGVD 29 (11/26/84)  107.879  (m)          353.93   (f) ADJUSTED    2 0
 JV1542
 JV1542.Superseded values are not recommended for survey control.
 JV1542
 JV1542.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1542.See file dsdata.pdf to determine how the superseded data were derived.
 JV1542
 JV1542_MARKER: B = BOLT
 JV1542_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1542_SP_SET: BRIDGE
 JV1542_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1542_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1542+SATELLITE: SATELLITE OBSERVATIONS - November 10, 2004
 JV1542
 JV1542  HISTORY     - Date     Condition        Report By
 JV1542  HISTORY     - UNK      MONUMENTED       PRR
 JV1542  HISTORY     - 1942     GOOD             CGS
 JV1542  HISTORY     - 20041110 GOOD             GEOCAC
 JV1542
 JV1542                          STATION DESCRIPTION
 JV1542
 JV1542'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1542'0.2 MI S FROM GRAYSTONE.
 JV1542'0.2 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV1542'AT GRAYSTONE, BALTIMORE COUNTY, AT BRIDGE 26.94 OVER LITTLE
 JV1542'FALLS, IN THE TOP OF THE EAST END OF THE SOUTH BACK WALL, 39 FEET
 JV1542'WEST OF THE CENTERLINE OF A CONCRETE ROAD PARALLELING THE TRACK,
 JV1542'AND 12 FEET EAST OF THE CENTERLINE OF THE EAST TRACK.  A COPPER
 JV1542'BOLT.
 JV1542
 JV1542                          STATION RECOVERY (2004)
 JV1542
 JV1542'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV1542'THE RAILROAD TRACKS HAVE BEEN REMOVED AND BRIDGE 26.94 NOW CARRIES THE
 JV1542'NCRR HIKING TRAIL OVER THE LITTLE FALLS RIVER.  THE MARK IS LOCATED IN
 JV1542'THE TOP OF THE EAST END OF THE SOUTH WALL, 16 FEET EAST-NORTHEAST OF
 JV1542'THE CENTERLINE OF THE TRAIL, 39 FEET WEST OF THE
 JV1542'CENTERLINE OF GREYSTONE ROAD, ABOUT FOUR FEET NORTH-NORTHEAST OF THE
 JV1542'SOUTHEAST END OF A CHAIN LINK FENCE AND ABOUT 120 FEET NORTH OF THE
 JV1542'INTERSECTION OF GREYSTONE ROAD AND WISEBURG ROAD.   TO REACH FROM THE
 JV1542'INTERSECTION OF INTERSTATE HIGHWAY 83 AND MIDDLETON ROAD, GO SOUTHEAST
 JV1542'ON MIDDLETON ROAD FOR 0.75 MILES TO YORK ROAD (MD STATE 45), TURN
 JV1542'RIGHT AND GO SOUTH ON YORK ROAD FOR 0.3 MILES TO WISEBURG ROAD, TURN
 JV1542'LEFT AND GO EASTERLY ON WISEBURG ROAD FOR ABOUT 1.5 MILES
 JV1542'TO GREYSTONE ROAD AND THE NCRR TRAIL, PACK NORTH-NORTHWEST ALONG THE
 JV1542'TRAIL FOR ABOUT 120 FEET TO THE BRIDGE AND THE MARK ON THE RIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0409 ***********************************************************************
 HV0409  DESIGNATION -  29.01
 HV0409  PID         -  HV0409
 HV0409  STATE/COUNTY-  MD/ST MARYS
 HV0409  COUNTRY     -  US
 HV0409  USGS QUAD   -  POINT LOOKOUT (2016)
 HV0409
 HV0409                         *CURRENT SURVEY CONTROL
 HV0409  ______________________________________________________________________
 HV0409* NAD 83(1986) POSITION- 38 06 13.     (N) 076 21 55.     (W)   SCALED
 HV0409* NAVD 88 ORTHO HEIGHT -     8.511 (meters)       27.92  (feet) ADJUSTED
 HV0409  ______________________________________________________________________
 HV0409  GEOID HEIGHT    -        -35.100 (meters)                     GEOID18
 HV0409  DYNAMIC HEIGHT  -          8.505 (meters)       27.90  (feet) COMP
 HV0409  MODELED GRAVITY -    979,976.9   (mgal)                       NAVD 88
 HV0409
 HV0409  VERT ORDER      -  FIRST     CLASS II
 HV0409
 HV0409.The horizontal coordinates were scaled from a map and have
 HV0409.an estimated accuracy of +/- 6 seconds.
 HV0409
 HV0409.The orthometric height was determined by differential leveling and
 HV0409.adjusted by the NATIONAL GEODETIC SURVEY
 HV0409.in June 1991.
 HV0409
 HV0409.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0409.GEOID18 height accuracy estimate available here.
 HV0409
 HV0409.Click photographs - Photos may exist for this station.
 HV0409
 HV0409.The dynamic height is computed by dividing the NAVD 88
 HV0409.geopotential number by the normal gravity value computed on the
 HV0409.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0409.degrees latitude (g = 980.6199 gals.).
 HV0409
 HV0409.The modeled gravity was interpolated from observed gravity values.
 HV0409
 HV0409;                    North         East    Units  Estimated Accuracy
 HV0409;SPC MD       -    48,700.      455,670.      MT  (+/- 180 meters Scaled)
 HV0409
 HV0409_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH802181(NAD 83)
 HV0409
 HV0409                          SUPERSEDED SURVEY CONTROL
 HV0409
 HV0409  NGVD 29 (11/26/84)    8.802  (m)           28.88   (f) ADJUSTED    1 2
 HV0409
 HV0409.Superseded values are not recommended for survey control.
 HV0409
 HV0409.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0409.See file dsdata.pdf to determine how the superseded data were derived.
 HV0409
 HV0409_MARKER: DD = SURVEY DISK
 HV0409_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV0409_MARK LOGO: CGS+SS
 HV0409_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0409
 HV0409  HISTORY     - Date     Condition        Report By
 HV0409  HISTORY     - 1934     MONUMENTED       MDGS
 HV0409  HISTORY     - 1941     GOOD             CGS
 HV0409  HISTORY     - 19901016 MARK NOT FOUND   NGS
 HV0409
 HV0409                          STATION DESCRIPTION
 HV0409
 HV0409'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0409'6 MI NW FROM POINT LOOKOUT.
 HV0409'ABOUT 6.0 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE
 HV0409'LIGHTHOUSE AT POINT LOOKOUT, SAINT MARYS COUNTY, 41.4 FEET
 HV0409'NORTH OF POWER-TRANSMISSION LINE POLE 51, AT THE JUNCTION OF A
 HV0409'ROAD LEADING EAST, 30 FEET NORTH OF THE CENTER LINE OF THE
 HV0409'ROAD, 16.5 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 1 FOOT
 HV0409'WEST OF THE RIGHT-OF-WAY FENCE, AND 1 FOOT EAST OF A WHITE
 HV0409'WOODEN POST STENCILED U.S.B.M.  A STATE SURVEY STANDARD
 HV0409'DISK, SET IN THE TOP OF A CONCRETE POST.
 HV0409
 HV0409                          STATION RECOVERY (1990)
 HV0409
 HV0409'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV0409'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2526 ***********************************************************************
 JV2526  DESIGNATION -  296
 JV2526  PID         -  JV2526
 JV2526  STATE/COUNTY-  MD/FREDERICK
 JV2526  COUNTRY     -  US
 JV2526  USGS QUAD   -  FREDERICK (2016)
 JV2526
 JV2526                         *CURRENT SURVEY CONTROL
 JV2526  ______________________________________________________________________
 JV2526* NAD 83(1986) POSITION- 39 24 55.2    (N) 077 24 41.7    (W)   HD_HELD2
 JV2526* NAVD 88 ORTHO HEIGHT -    89.904 (meters)      294.96  (feet) ADJUSTED
 JV2526  ______________________________________________________________________
 JV2526  GEOID HEIGHT    -        -32.728 (meters)                     GEOID18
 JV2526  DYNAMIC HEIGHT  -         89.856 (meters)      294.80  (feet) COMP
 JV2526  MODELED GRAVITY -    980,091.1   (mgal)                       NAVD 88
 JV2526
 JV2526  VERT ORDER      -  SECOND    CLASS 0
 JV2526
 JV2526.The horizontal coordinates were established by autonomous hand held GPS
 JV2526.observations and have an estimated accuracy of +/- 10 meters.
 JV2526
 JV2526.The orthometric height was determined by differential leveling and
 JV2526.adjusted by the NATIONAL GEODETIC SURVEY
 JV2526.in June 1991.
 JV2526
 JV2526.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2526.GEOID18 height accuracy estimate available here.
 JV2526
 JV2526.Click photographs - Photos may exist for this station.
 JV2526
 JV2526.The dynamic height is computed by dividing the NAVD 88
 JV2526.geopotential number by the normal gravity value computed on the
 JV2526.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2526.degrees latitude (g = 980.6199 gals.).
 JV2526
 JV2526.The modeled gravity was interpolated from observed gravity values.
 JV2526
 JV2526;                    North         East    Units  Estimated Accuracy
 JV2526;SPC MD       -   194,195.      364,556.      MT  (+/- 10 meters HH2 GPS)
 JV2526
 JV2526_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9239165643(NAD 83)
 JV2526
 JV2526                          SUPERSEDED SURVEY CONTROL
 JV2526
 JV2526  NGVD 29 (11/26/84)   90.125  (m)          295.69   (f) ADJUSTED    2 0
 JV2526
 JV2526.Superseded values are not recommended for survey control.
 JV2526
 JV2526.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2526.See file dsdata.pdf to determine how the superseded data were derived.
 JV2526
 JV2526_STAMPING: MARYLAND 296 296
 JV2526_MARK LOGO: USGS
 JV2526_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2526+SATELLITE: SATELLITE OBSERVATIONS - November 05, 2001
 JV2526
 JV2526  HISTORY     - Date     Condition        Report By
 JV2526  HISTORY     - 1906     MONUMENTED       USGS
 JV2526  HISTORY     - 1935     GOOD             CGS
 JV2526  HISTORY     - 20011105 MARK NOT FOUND   MDSHA
 JV2526  HISTORY     - 20040518 MARK NOT FOUND   USPSQD
 JV2526  HISTORY     - 20200404 MARK NOT FOUND   WSRR
 JV2526
 JV2526                          STATION DESCRIPTION
 JV2526
 JV2526'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2526'AT FREDERICK.
 JV2526'AT FREDERICK, FREDERICK COUNTY, AT 20 WEST CHURCH STREET, 21
 JV2526'FEET SOUTH OF THE CENTER LINE OF THE STREET, AT THE ENTRANCE
 JV2526'TO THE JACOB ROHRBACK OFFICE, AND IN THE TOP OF THE CONCRETE
 JV2526'LANDING OF THE STEPS.  A UNITED STATES GEOLOGICAL SURVEY
 JV2526'STANDARD DISK, STAMPED MARYLAND 296 296.
 JV2526
 JV2526                          STATION RECOVERY (2001)
 JV2526
 JV2526'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2526'THE STATION WAS SEARCHED FOR AND THE STEM AND IMPRESSION OF THE DISK
 JV2526'WAS FOUND, BUT THE DISK HAS BEEN REMOVED.
 JV2526
 JV2526                          STATION RECOVERY (2004)
 JV2526
 JV2526'RECOVERY NOTE BY US POWER SQUADRON 2004 (RTK)
 JV2526'MARK NOT FOUND.
 JV2526
 JV2526                          STATION RECOVERY (2020)
 JV2526
 JV2526'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV2526'DISK HAS BEEN REMOVED FROM SETTING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8522 ***********************************************************************
 AI8522  DESIGNATION -  29FA
 AI8522  PID         -  AI8522
 AI8522  STATE/COUNTY-  MD/HOWARD
 AI8522  COUNTRY     -  US
 AI8522  USGS QUAD   -  CLARKSVILLE (2016)
 AI8522
 AI8522                         *CURRENT SURVEY CONTROL
 AI8522  ______________________________________________________________________
 AI8522* NAD 83(2011) POSITION- 39 14 04.26528(N) 076 53 27.17397(W)   ADJUSTED
 AI8522* NAD 83(2011) ELLIP HT-   110.763 (meters)        (06/27/12)   ADJUSTED
 AI8522* NAD 83(2011) EPOCH   -  2010.00
 AI8522* NAVD 88 ORTHO HEIGHT -   142.9   (meters)      469.    (feet) GPS OBS
 AI8522  ______________________________________________________________________
 AI8522  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8522  GEOID HEIGHT    -        -32.080 (meters)                     GEOID99
 AI8522  GEOID HEIGHT    -        -32.101 (meters)                     GEOID18
 AI8522  NAD 83(2011) X  -  1,122,007.855 (meters)                     COMP
 AI8522  NAD 83(2011) Y  - -4,818,067.939 (meters)                     COMP
 AI8522  NAD 83(2011) Z  -  4,012,587.005 (meters)                     COMP
 AI8522  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 AI8522
 AI8522  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8522  Standards:
 AI8522         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8522            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8522  -------------------------------------------------------------------
 AI8522  NETWORK    1.24   1.33           0.54   0.46   0.68     -0.19952617
 AI8522  -------------------------------------------------------------------
 AI8522  Click here for local accuracies and other accuracy information.
 AI8522
 AI8522.The horizontal coordinates were established by GPS observations
 AI8522.and adjusted by the National Geodetic Survey in June 2012.
 AI8522
 AI8522.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8522.been affixed to the stable North American tectonic plate. See 
 AI8522.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8522
 AI8522.The horizontal coordinates are valid at the epoch date displayed above
 AI8522.which is a decimal equivalence of Year/Month/Day.
 AI8522
 AI8522.The orthometric height was determined by GPS observations and a
 AI8522.high-resolution geoid model.
 AI8522
 AI8522.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8522.GEOID18 height accuracy estimate available here.
 AI8522
 AI8522.Click photographs - Photos may exist for this station.
 AI8522
 AI8522.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8522
 AI8522.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8522
 AI8522.The ellipsoidal height was determined by GPS observations
 AI8522.and is referenced to NAD 83.
 AI8522
 AI8522. The following values were computed from the NAD 83(2011) position.
 AI8522
 AI8522;                    North         East     Units Scale Factor Converg.
 AI8522;SPC MD       -   174,046.450   409,420.956   MT  0.99996940   +0 04 06.6
 AI8522;SPC MD       -   571,017.39  1,343,241.92   sFT  0.99996940   +0 04 06.6
 AI8522;UTM  18      - 4,344,505.463   336,801.133   MT  0.99992794   -1 11 46.5
 AI8522
 AI8522!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8522!SPC MD       -   0.99998262  x   0.99996940  =   0.99995202
 AI8522!UTM  18      -   0.99998262  x   0.99992794  =   0.99991056
 AI8522
 AI8522_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3680144505(NAD 83)
 AI8522
 AI8522                          SUPERSEDED SURVEY CONTROL
 AI8522
 AI8522  NAD 83(2007)-  39 14 04.26528(N)    076 53 27.17474(W) AD(2002.00) 0
 AI8522  ELLIP H (02/10/07)  110.792  (m)                       GP(2002.00)    
 AI8522  ELLIP H (08/30/02)  110.789  (m)                       GP(       ) 4 2
 AI8522  NAD 83(1991)-  39 14 04.26501(N)    076 53 27.17438(W) AD(       ) 1
 AI8522  ELLIP H (11/16/00)  110.707  (m)                       GP(       ) 4 1
 AI8522
 AI8522.Superseded values are not recommended for survey control.
 AI8522
 AI8522.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8522.See file dsdata.pdf to determine how the superseded data were derived.
 AI8522
 AI8522_MARKER: DD = SURVEY DISK
 AI8522_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8522_STAMPING: 29FA
 AI8522_MARK LOGO: MD-027
 AI8522_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8522_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8522+STABILITY: SURFACE MOTION
 AI8522_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8522+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8522
 AI8522  HISTORY     - Date     Condition        Report By
 AI8522  HISTORY     - 1992     MONUMENTED       MD-027
 AI8522  HISTORY     - 20000915 GOOD             MD-027
 AI8522  HISTORY     - 20100105 MARK NOT FOUND   INDIV
 AI8522
 AI8522                          STATION DESCRIPTION
 AI8522
 AI8522'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8522'DESCRIPTION BY  HOWARD COUNTY 2000    THE STATION IS LOCATED IN THE
 AI8522'CITY  OF COLUMBIA  ON  THE NORTH SIDE  OF STATE HIGHWAY 108 IN
 AI8522'FRONT   OF HOWARD COUNTY BOARD OF  EDUCATION BUILDING.   TO REACH
 AI8522'THE   STATION FROM THE INTERSECTION OF STATE HIGHWAY  29  AND
 AI8522'STATE   HIGHWAY 108 GO  2.8 MILES WEST ALONG  ROUTE 108 TO THE
 AI8522'INTERSECTION WITH CEDAR LANE AND THE MARK ON THE  NORTHWEST
 AI8522'CORNER.    THE STATION IS 3.1 FEET TO THE EAST FACE OF CURB AT THE
 AI8522'ENTRANCE  TO THE  BOARD OF EDUCATION  ADMINISTRATION BUILDING
 AI8522'ENTRANCE,  18.3  FEET NW OF POLE  C AND E 108227 AND 11.7 FEET TO A
 AI8522'WATER   VALVE MANHOLE  ON  SAID ENTRANCE ROAD.   THE STATION IS A
 AI8522'STANDARD   HOWARD COUNTY SURVEY MONUMENT SET  ON CONCRETE
 AI8522'BASE, FLUSH   WITH THE GROUND.
 AI8522'
 AI8522
 AI8522                          STATION RECOVERY (2010)
 AI8522
 AI8522'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2010 (JKL)
 AI8522'A NEW ENTRANCE HAS BEEN CONSTRUCTED TO THE HOWARD COUNTY BOARD OF
 AI8522'EDUCATION BUILDING. IT IS BELIEVED THAT THE MONUMENT WAS DESTROYED BY
 AI8522'THIS CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2160 ***********************************************************************
 AE2160  SACS        -  This is a Secondary Airport Control Station.
 AE2160  DESIGNATION -  2G4 A
 AE2160  PID         -  AE2160
 AE2160  STATE/COUNTY-  MD/GARRETT
 AE2160  COUNTRY     -  US
 AE2160  USGS QUAD   -  MCHENRY (2016)
 AE2160
 AE2160                         *CURRENT SURVEY CONTROL
 AE2160  ______________________________________________________________________
 AE2160* NAD 83(2011) POSITION- 39 34 50.15760(N) 079 20 08.07091(W)   ADJUSTED
 AE2160* NAD 83(2011) ELLIP HT-   857.745 (meters)        (06/27/12)   ADJUSTED
 AE2160* NAD 83(2011) EPOCH   -  2010.00
 AE2160* NAVD 88 ORTHO HEIGHT -   889.08  (meters)     2916.9   (feet) GPS OBS
 AE2160  ______________________________________________________________________
 AE2160  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE2160  GEOID HEIGHT    -        -31.339 (meters)                     GEOID96
 AE2160  GEOID HEIGHT    -        -31.291 (meters)                     GEOID18
 AE2160  NAD 83(2011) X  -    911,064.483 (meters)                     COMP
 AE2160  NAD 83(2011) Y  - -4,838,136.571 (meters)                     COMP
 AE2160  NAD 83(2011) Z  -  4,042,751.002 (meters)                     COMP
 AE2160  LAPLACE CORR    -         -0.50  (seconds)                    DEFLEC18
 AE2160
 AE2160  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2160  Standards:
 AE2160         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2160            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2160  -------------------------------------------------------------------
 AE2160  NETWORK    1.49   2.65           0.65   0.54   1.35     -0.32085532
 AE2160  -------------------------------------------------------------------
 AE2160  Click here for local accuracies and other accuracy information.
 AE2160
 AE2160.This mark is at Garrett County Airport (2G4)
 AE2160
 AE2160.The horizontal coordinates were established by GPS observations
 AE2160.and adjusted by the National Geodetic Survey in June 2012.
 AE2160
 AE2160.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2160.been affixed to the stable North American tectonic plate. See 
 AE2160.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2160
 AE2160.The horizontal coordinates are valid at the epoch date displayed above
 AE2160.which is a decimal equivalence of Year/Month/Day.
 AE2160
 AE2160.The orthometric height was determined by GPS observations and a
 AE2160.high-resolution geoid model.
 AE2160
 AE2160.GPS derived orthometric heights for airport stations designated as
 AE2160.PACS or SACS are published to 2 decimal places.  This maintains
 AE2160.centimeter relative accuracy between the PACS and SACS.  It does
 AE2160.not indicate centimeter accuracy relative to other marks which are
 AE2160.part of the published vertical control network.
 AE2160
 AE2160.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2160.GEOID18 height accuracy estimate available here.
 AE2160
 AE2160.Click photographs - Photos may exist for this station.
 AE2160
 AE2160.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2160
 AE2160.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2160
 AE2160.The ellipsoidal height was determined by GPS observations
 AE2160.and is referenced to NAD 83.
 AE2160
 AE2160. The following values were computed from the NAD 83(2011) position.
 AE2160
 AE2160;                    North         East     Units Scale Factor Converg.
 AE2160;SPC MD       -   215,030.475   199,358.194   MT  1.00002546   -1 27 57.2
 AE2160;SPC MD       -   705,479.15    654,061.01   sFT  1.00002546   -1 27 57.2
 AE2160;UTM  17      - 4,382,532.643   642,943.998   MT  0.99985157   +1 03 38.5
 AE2160
 AE2160!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2160!SPC MD       -   0.99986545  x   1.00002546  =   0.99989091
 AE2160!UTM  17      -   0.99986545  x   0.99985157  =   0.99971704
 AE2160
 AE2160_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4294382532(NAD 83)
 AE2160
 AE2160                          SUPERSEDED SURVEY CONTROL
 AE2160
 AE2160  NAD 83(2007)-  39 34 50.15772(N)    079 20 08.07208(W) AD(2002.00) 0
 AE2160  ELLIP H (02/10/07)  857.753  (m)                       GP(2002.00)    
 AE2160  ELLIP H (10/29/02)  857.777  (m)                       GP(       ) 4 2
 AE2160  NAD 83(1995)-  39 34 50.15793(N)    079 20 08.07183(W) AD(       ) 1
 AE2160  ELLIP H (08/25/97)  857.783  (m)                       GP(       ) 4 2
 AE2160
 AE2160.Superseded values are not recommended for survey control.
 AE2160
 AE2160.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2160.See file dsdata.pdf to determine how the superseded data were derived.
 AE2160
 AE2160_MARKER: I = METAL ROD
 AE2160_SETTING: 50 = ALUMINUM ALLOY ROD W/O SLEEVE (10 FT.+)
 AE2160_STAMPING: 2G4 A 1996
 AE2160_MARK LOGO: NGS
 AE2160_PROJECTION: RECESSED 6 CENTIMETERS
 AE2160_MAGNETIC: N = NO MAGNETIC MATERIAL
 AE2160_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AE2160_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2160+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AE2160_ROD/PIPE-DEPTH: 1.0 meters
 AE2160
 AE2160  HISTORY     - Date     Condition        Report By
 AE2160  HISTORY     - 1996     MONUMENTED       NGS
 AE2160
 AE2160                          STATION DESCRIPTION
 AE2160
 AE2160'DESCRIBED BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 AE2160'THE STATION IS LOCATED ABOUT 5.6 KM (3.45 MI) SOUTH OF ACCIDENT, 3.5
 AE2160'KM (2.15 MI) NORTH OF MCHENRY, AT THE GARRETT COUNTY AIRPORT, NEAR THE
 AE2160'EAST END OF THE AIRPORT, 0.2 MI (0.3 KM) WEST OF THE EAST END OF THE
 AE2160'RUNWAY AND ON THE SOUTH SIDE OF THE SINGLE RUNWAY. OWNERSHIP--GARRETT
 AE2160'COUNTY, GARRETT COUNTY COMMISSIONERS, C/O GARY MULLICK, GARRETT COUNTY
 AE2160'GENERAL SERVICES DEPARTMENT, 313 EAST ALDER STREET, OAKLAND MD 21550,
 AE2160'PHONE 301-334-1928 (OFFICE) , 301-387-5468 (HOME) .  THE FIXED BASE
 AE2160'OPERATOR SHOULD BE CONTACTED PRIOR TO ACCESSING THE FIELD.  FIXED BASE
 AE2160'OPERATOR, PLANE AVIATION, PO BOX 305, MCHENRY MD 21541, BRENDA DOLAN,
 AE2160'PHONE 301-387-4100.  THE OFFICE IS LOCATED AT THE END OF THE AIRPORT
 AE2160'ACCESS ROAD JUST PRIOR TO ENTERING THE AIRCRAFT PARKING RAMP.  TO
 AE2160'REACH THE STATION FROM THE NORTH END OF THE BRIDGE OVER DEEP CREEK
 AE2160'LAKE AT MCHENRY, GO NORTH FOR 3.5 KM (2.15 MI) ON US HIGHWAY 219 TO A
 AE2160'CROSSROAD.  TURN RIGHT AND GO EAST FOR 0.5 KM (0.30 MI) ON MOSSER
 AE2160'ROAD, FOLLOWING THE MAIN TRAVELED WINDING ROAD TO A FORK.  BEAR LEFT,
 AE2160'EAST, FOR 0.5 KM (0.30 MI) ON BUMBLE BEE ROAD TO THE GARRETT COUNTY
 AE2160'COMMUNITY COLLEGE ON THE RIGHT.  CONTINUE STRAIGHT AHEAD AND GO EAST
 AE2160'FOR 2.9 KM (1.80 MI) ON BUMBLE BEE ROAD TO A SIDE ROAD ON THE LEFT.
 AE2160'TURN LEFT AND GO NORTHWEST FOR 1.0 KM (0.60 MI) ON AIRPORT ROAD TO THE
 AE2160'AIRPORT ADMINISTRATION BUILDING ON THE LEFT.  CONTINUE STRAIGHT AHEAD
 AE2160'AND GO WEST FOR 0.2 KM (0.10 MI) ON THE TARMAC AND RAMP TO THE EAST
 AE2160'END OF THE RUNWAY.  CROSS THE RUNWAY TO THE STATION ON THE LEFT.  THE
 AE2160'STATION IS LOCATED 96.3 FT (29.4 M) SOUTH FROM THE CENTER OF THE
 AE2160'RUNWAY, 66.8 FT (20.4 M) SOUTHWEST FROM THE SECOND WHITE RUNWAY LIGHT
 AE2160'FROM THE EAST END OF THE RUNWAY, 9.5 FT (2.9 M) NORTH FROM THE MOW
 AE2160'LINE AT THE EDGE OF A STEEP BANK NOTE--THIS STATION WAS USED AS AN
 AE2160'AREA NAVIGATION APPROACH SECONDARY AIRPORT CONTROL STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2161 ***********************************************************************
 AE2161  SACS        -  This is a Secondary Airport Control Station.
 AE2161  DESIGNATION -  2G4 B
 AE2161  PID         -  AE2161
 AE2161  STATE/COUNTY-  MD/GARRETT
 AE2161  COUNTRY     -  US
 AE2161  USGS QUAD   -  MCHENRY (2016)
 AE2161
 AE2161                         *CURRENT SURVEY CONTROL
 AE2161  ______________________________________________________________________
 AE2161* NAD 83(2011) POSITION- 39 34 53.72060(N) 079 20 23.76716(W)   ADJUSTED
 AE2161* NAD 83(2011) ELLIP HT-   872.678 (meters)        (06/27/12)   ADJUSTED
 AE2161* NAD 83(2011) EPOCH   -  2010.00
 AE2161* NAVD 88 ORTHO HEIGHT -   904.01  (meters)     2965.9   (feet) GPS OBS
 AE2161  ______________________________________________________________________
 AE2161  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE2161  GEOID HEIGHT    -        -31.339 (meters)                     GEOID96
 AE2161  GEOID HEIGHT    -        -31.291 (meters)                     GEOID18
 AE2161  NAD 83(2011) X  -    910,685.486 (meters)                     COMP
 AE2161  NAD 83(2011) Y  - -4,838,148.380 (meters)                     COMP
 AE2161  NAD 83(2011) Z  -  4,042,845.219 (meters)                     COMP
 AE2161  LAPLACE CORR    -         -0.08  (seconds)                    DEFLEC18
 AE2161
 AE2161  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2161  Standards:
 AE2161         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2161            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2161  -------------------------------------------------------------------
 AE2161  NETWORK    1.20   2.25           0.54   0.43   1.15     -0.13972900
 AE2161  -------------------------------------------------------------------
 AE2161  Click here for local accuracies and other accuracy information.
 AE2161
 AE2161.This mark is at Garrett County Airport (2G4)
 AE2161
 AE2161.The horizontal coordinates were established by GPS observations
 AE2161.and adjusted by the National Geodetic Survey in June 2012.
 AE2161
 AE2161.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2161.been affixed to the stable North American tectonic plate. See 
 AE2161.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2161
 AE2161.The horizontal coordinates are valid at the epoch date displayed above
 AE2161.which is a decimal equivalence of Year/Month/Day.
 AE2161
 AE2161.The orthometric height was determined by GPS observations and a
 AE2161.high-resolution geoid model.
 AE2161
 AE2161.GPS derived orthometric heights for airport stations designated as
 AE2161.PACS or SACS are published to 2 decimal places.  This maintains
 AE2161.centimeter relative accuracy between the PACS and SACS.  It does
 AE2161.not indicate centimeter accuracy relative to other marks which are
 AE2161.part of the published vertical control network.
 AE2161
 AE2161.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2161.GEOID18 height accuracy estimate available here.
 AE2161
 AE2161.Click photographs - Photos may exist for this station.
 AE2161
 AE2161.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2161
 AE2161.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2161
 AE2161.The ellipsoidal height was determined by GPS observations
 AE2161.and is referenced to NAD 83.
 AE2161
 AE2161. The following values were computed from the NAD 83(2011) position.
 AE2161
 AE2161;                    North         East     Units Scale Factor Converg.
 AE2161;SPC MD       -   215,149.919   198,986.532   MT  1.00002567   -1 28 07.0
 AE2161;SPC MD       -   705,871.03    652,841.65   sFT  1.00002567   -1 28 07.0
 AE2161;UTM  17      - 4,382,635.569   642,567.499   MT  0.99985025   +1 03 28.6
 AE2161
 AE2161!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2161!SPC MD       -   0.99986311  x   1.00002567  =   0.99988877
 AE2161!UTM  17      -   0.99986311  x   0.99985025  =   0.99971338
 AE2161
 AE2161_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4256782635(NAD 83)
 AE2161
 AE2161|---------------------------------------------------------------------|
 AE2161| PID    Reference Object                     Distance      Geod. Az  |
 AE2161|                                                           dddmmss.s |
 AE2161| JW1533 GARRETT                             282.686 METERS 21924     |
 AE2161|---------------------------------------------------------------------|
 AE2161
 AE2161                          SUPERSEDED SURVEY CONTROL
 AE2161
 AE2161  NAD 83(2007)-  39 34 53.72073(N)    079 20 23.76832(W) AD(2002.00) 0
 AE2161  ELLIP H (02/10/07)  872.686  (m)                       GP(2002.00)    
 AE2161  ELLIP H (10/29/02)  872.710  (m)                       GP(       ) 4 2
 AE2161  NAD 83(1995)-  39 34 53.72093(N)    079 20 23.76808(W) AD(       ) 1
 AE2161  ELLIP H (08/25/97)  872.716  (m)                       GP(       ) 4 2
 AE2161
 AE2161.Superseded values are not recommended for survey control.
 AE2161
 AE2161.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2161.See file dsdata.pdf to determine how the superseded data were derived.
 AE2161
 AE2161_MARKER: DH = HORIZONTAL CONTROL DISK
 AE2161_SETTING: 66 = SET IN ROCK OUTCROP
 AE2161_STAMPING: 2G4 B 1996
 AE2161_MARK LOGO: NGS
 AE2161_MAGNETIC: N = NO MAGNETIC MATERIAL
 AE2161_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 AE2161+STABILITY: POSITION/ELEVATION WELL
 AE2161_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2161+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AE2161
 AE2161  HISTORY     - Date     Condition        Report By
 AE2161  HISTORY     - 1996     MONUMENTED       NGS
 AE2161  HISTORY     - 20050627 POOR             INDIV
 AE2161
 AE2161                          STATION DESCRIPTION
 AE2161
 AE2161'DESCRIBED BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 AE2161'THE STATION IS LOCATED ABOUT 5.6 KM (3.45 MI) SOUTH OF ACCIDENT, 3.5
 AE2161'KM (2.15 MI) NORTH OF MCHENRY, AT THE GARRETT COUNTY AIRPORT, ON TOP
 AE2161'OF A HILL AND ON THE SOUTH SIDE OF THE SINGLE RUNWAY.
 AE2161'OWNERSHIP--GARRETT COUNTY, GARRETT COUNTY COMMISSIONERS, C/O GARY
 AE2161'MULLICK, GARRETT COUNTY GENERAL SERVICES DEPARTMENT, 313 EAST ALDER
 AE2161'STREET, OAKLAND MD 21550, PHONE 301-334-1928 (OFFICE) , 301-387-5468
 AE2161'(HOME) .  THE FIXED BASE OPERATOR SHOULD BE CONTACTED PRIOR TO
 AE2161'ACCESSING THE FIELD.  FIXED BASE OPERATOR, PLANE AVIATION, PO BOX 305,
 AE2161'MCHENRY MD 21541, BRENDA DOLAN, PHONE 301-387-4100.  THE OFFICE IS
 AE2161'LOCATED AT THE END OF THE AIRPORT ACCESS ROAD JUST PRIOR TO ENTERING
 AE2161'THE AIRCRAFT PARKING RAMP.  TO REACH THE STATION FROM THE NORTH END OF
 AE2161'THE BRIDGE OVER DEEP CREEK LAKE AT MCHENRY, GO NORTH FOR 3.5 KM (2.15
 AE2161'MI) ON US HIGHWAY 219 TO A CROSSROAD.  TURN RIGHT AND GO EAST FOR 0.5
 AE2161'KM (0.30 MI) ON MOSSER ROAD, FOLLOWING THE MAIN TRAVELED WINDING ROAD
 AE2161'TO A FORK.  BEAR LEFT, EAST, FOR 0.5 KM (0.30 MI) ON BUMBLE BEE ROAD
 AE2161'TO THE GARRETT COUNTY COMMUNITY COLLEGE ON THE RIGHT.  CONTINUE
 AE2161'STRAIGHT AHEAD AND GO EAST FOR 2.9 KM (1.80 MI) ON BUMBLE BEE ROAD TO
 AE2161'A SIDE ROAD ON THE LEFT.  TURN LEFT AND GO NORTHWEST FOR 1.0 KM (0.60
 AE2161'MI) ON AIRPORT ROAD TO THE AIRPORT ADMINISTRATION BUILDING ON THE
 AE2161'LEFT.  CONTINUE STRAIGHT AHEAD AND GO WEST FOR 0.2 KM (0.10 MI) ON THE
 AE2161'TARMAC AND RAMP TO THE EAST END OF THE RUNWAY.  TURN RIGHT WEST ALONG
 AE2161'RUNWAY FOR 0.2 MI (0.3 KM) TO THE SIXTH RUNWAY LIGHT.  TURN RIGHT
 AE2161'NORTH ACROSS GRASS AND UP THE HILL ON A TRACK ROAD FOR 0.1 MI (0.2 KM)
 AE2161'TO NEAR TOP OF HILL AND THE STATION ON THE LEFT.  THE STATION IS 68.0
 AE2161'FT (20.7 M) SOUTHWEST FROM A LIGHT POLE, AND 15.5 FT (4.7 M) WEST FROM
 AE2161'THE CENTER OF THE TRACK ROAD. NOTE--THIS STATION WAS USED AS AN AREA
 AE2161'NAVIGATION APPROACH SECONDARY AIRPORT CONTROL STATION.
 AE2161
 AE2161                          STATION RECOVERY (2005)
 AE2161
 AE2161'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2005 (RWH)
 AE2161'MONUMENT REMOVED DUE TO MASS GRADING AT AIRPORT. MONUMENT IS LOCATED
 AE2161'AT THE SITE ENGINEERS OFFICE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3588 ***********************************************************************
 AE3588  PACS        -  This is a Primary Airport Control Station.
 AE3588  DESIGNATION -  2W2 A
 AE3588  PID         -  AE3588
 AE3588  STATE/COUNTY-  MD/CARROLL
 AE3588  COUNTRY     -  US
 AE3588  USGS QUAD   -  WINFIELD (2016)
 AE3588
 AE3588                         *CURRENT SURVEY CONTROL
 AE3588  ______________________________________________________________________
 AE3588* NAD 83(2011) POSITION- 39 28 01.18342(N) 077 01 03.80796(W)   ADJUSTED
 AE3588* NAD 83(2011) ELLIP HT-   202.231 (meters)        (06/27/12)   ADJUSTED
 AE3588* NAD 83(2011) EPOCH   -  2010.00
 AE3588* NAVD 88 ORTHO HEIGHT -   234.26  (meters)      768.6   (feet) GPS OBS
 AE3588  ______________________________________________________________________
 AE3588  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE3588  GEOID HEIGHT    -        -32.028 (meters)                     GEOID96
 AE3588  GEOID HEIGHT    -        -32.009 (meters)                     GEOID18
 AE3588  NAD 83(2011) X  -  1,107,678.096 (meters)                     COMP
 AE3588  NAD 83(2011) Y  - -4,804,661.571 (meters)                     COMP
 AE3588  NAD 83(2011) Z  -  4,032,603.908 (meters)                     COMP
 AE3588  LAPLACE CORR    -          0.67  (seconds)                    DEFLEC18
 AE3588
 AE3588  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE3588  Standards:
 AE3588         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE3588            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE3588  -------------------------------------------------------------------
 AE3588  NETWORK    0.31   2.31           0.14   0.11   1.18      0.06357072
 AE3588  -------------------------------------------------------------------
 AE3588  Click here for local accuracies and other accuracy information.
 AE3588
 AE3588.This mark is at Clearview Airpark  (2W2)
 AE3588
 AE3588.The horizontal coordinates were established by GPS observations
 AE3588.and adjusted by the National Geodetic Survey in June 2012.
 AE3588
 AE3588.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE3588.been affixed to the stable North American tectonic plate. See 
 AE3588.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE3588
 AE3588.The horizontal coordinates are valid at the epoch date displayed above
 AE3588.which is a decimal equivalence of Year/Month/Day.
 AE3588
 AE3588.The orthometric height was determined by GPS observations and a
 AE3588.high-resolution geoid model.
 AE3588
 AE3588.GPS derived orthometric heights for airport stations designated as
 AE3588.PACS or SACS are published to 2 decimal places.  This maintains
 AE3588.centimeter relative accuracy between the PACS and SACS.  It does
 AE3588.not indicate centimeter accuracy relative to other marks which are
 AE3588.part of the published vertical control network.
 AE3588
 AE3588.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3588.GEOID18 height accuracy estimate available here.
 AE3588
 AE3588.Click photographs - Photos may exist for this station.
 AE3588
 AE3588.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE3588
 AE3588.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE3588
 AE3588.The ellipsoidal height was determined by GPS observations
 AE3588.and is referenced to NAD 83.
 AE3588
 AE3588. The following values were computed from the NAD 83(2011) position.
 AE3588
 AE3588;                    North         East     Units Scale Factor Converg.
 AE3588;SPC MD       -   199,850.709   398,474.736   MT  1.00000302   -0 00 40.0
 AE3588;SPC MD       -   655,676.87  1,307,329.20   sFT  1.00000302   -0 00 40.0
 AE3588;UTM  18      - 4,370,544.733   326,429.057   MT  0.99997094   -1 16 58.3
 AE3588
 AE3588!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE3588!SPC MD       -   0.99996827  x   1.00000302  =   0.99997129
 AE3588!UTM  18      -   0.99996827  x   0.99997094  =   0.99993921
 AE3588
 AE3588_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2642970544(NAD 83)
 AE3588
 AE3588|---------------------------------------------------------------------|
 AE3588| PID    Reference Object                     Distance      Geod. Az  |
 AE3588|                                                           dddmmss.s |
 AE3588| JV6469 CLEARVIEW AP                        279.562 METERS 11830     |
 AE3588| JV6470 CLEARVIEW AP AZ MK                  207.673 METERS 30542     |
 AE3588|---------------------------------------------------------------------|
 AE3588
 AE3588                          SUPERSEDED SURVEY CONTROL
 AE3588
 AE3588  NAD 83(2007)-  39 28 01.18361(N)    077 01 03.80883(W) AD(2002.00) 0
 AE3588  ELLIP H (02/10/07)  202.258  (m)                       GP(2002.00)    
 AE3588  ELLIP H (10/29/02)  202.265  (m)                       GP(       ) 2 1
 AE3588  NAD 83(1991)-  39 28 01.18357(N)    077 01 03.80900(W) AD(       ) B
 AE3588  ELLIP H (10/08/97)  202.226  (m)                       GP(       ) 2 1
 AE3588
 AE3588.Superseded values are not recommended for survey control.
 AE3588
 AE3588.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE3588.See file dsdata.pdf to determine how the superseded data were derived.
 AE3588
 AE3588_MARKER: I = METAL ROD
 AE3588_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 AE3588_STAMPING: 2W2 A 1996
 AE3588_MARK LOGO: NGS
 AE3588_PROJECTION: FLUSH
 AE3588_MAGNETIC: N = NO MAGNETIC MATERIAL
 AE3588_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AE3588_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3588+SATELLITE: SATELLITE OBSERVATIONS - November 12, 1996
 AE3588_ROD/PIPE-DEPTH: 2.7 meters
 AE3588_SLEEVE-DEPTH  : 0.9 meters
 AE3588
 AE3588  HISTORY     - Date     Condition        Report By
 AE3588  HISTORY     - 1996     MONUMENTED       NGS
 AE3588  HISTORY     - 19961112 GOOD             NGS
 AE3588
 AE3588                          STATION DESCRIPTION
 AE3588
 AE3588'DESCRIBED BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 AE3588'THE STATION IS LOCATED ABOUT 8 MI (12.9 KM) SOUTH FROM WESTMINSTER,5
 AE3588'MI WEST FROM GAMBER,AND 4 MI (6.4 KM) NORTHEAST FROM WINFIELD,AT THE
 AE3588'CENTER OF THE CLEARVIEW AIRPARK.  OWNERSHIP --- CLEARVIEW AIRPORT INC.
 AE3588'CONTACT LOWELL SEAL PHONE NO.  (410) 795 - 9840 FOR PERMISSION TO
 AE3588'OCCUPY STATION.  TO REACH FROM THE INTERSECTION OF STATE HWY 97 AND
 AE3588'140 IN THE NORTHEAST EDGE OF WESTMINSTER,GO SOUTH ON SH 97 FOR 8 MI
 AE3588'(12.9 KM) TO A ROAD ON THE RIGHT.TURN RIGHT AND GO WEST ON BARTHOLLOW
 AE3588'RD FOR 0.15 MI (0.24 KM) TO A T-INTERSECTION.TURN RIGHT AND GO NORTH
 AE3588'ON WASHINGTON RD FOR 0.25 MI (0.40 KM) TO A LEFT HAND TURN.FOLLOW ROAD
 AE3588'TO YOU COME TO A STOP SIGN AND 4 WAY INTERSECTION. TURN RIGHT ON OAK
 AE3588'BRANCH ROAD AND GO STRAIGHT ADHEAD TO AIRPORT ENTRANCE ROAD.FOLLOW
 AE3588'AIRPORT ENTRANCE ROAD TO RUNWAY 31,TURN LEFT AND GO NORTHWEST ALONG
 AE3588'AIRPORT ENTRANCE ROAD FOR 0.2 MI (0.3 KM) AND THE STATION ON THE RIGHT
 AE3588'IN THE INFIELD BETWEEN THE RUNWAY,PARALLEL TAXIWAY AND ON THE NORTH
 AE3588'SIDE OF THE CONNECTING TAXIWAY.  THE STATION IS 37.1 FT (11.3 M)
 AE3588'SOUTHWEST FROM THE SOUTH EDGE OF THE RUNWAY, 73.9 FT (22.5 M)
 AE3588'NORTHWEST FROM THE NORTH EDGE OF THE CONNECTING TAXIWAY,AND 32.8 FT
 AE3588'(10.0 M) NORTHEAST FROM THE NORTH EDGE OF PARALLEL TAXIWAY.  THE
 AE3588'STATION IS TOP CENTER OF STAINLESS STEEL ROD DRIVEN TO REFUSAL
 AE3588'ENCLOSED IN 5 IN LOGO CAP FLUSH WITH THE GROUND. THIS STATION IS
 AE3588'DESIGNATED AS THE PRIMARY AIRPORT CONTROL STATION.
 AE3588
 AE3588                          STATION RECOVERY (1996)
 AE3588
 AE3588'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 AE3588'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0415 ***********************************************************************
 HV0415  DESIGNATION -  3
 HV0415  PID         -  HV0415
 HV0415  STATE/COUNTY-  MD/ST MARYS
 HV0415  COUNTRY     -  US
 HV0415  USGS QUAD   -  POINT LOOKOUT (2016)
 HV0415
 HV0415                         *CURRENT SURVEY CONTROL
 HV0415  ______________________________________________________________________
 HV0415* NAD 83(1986) POSITION- 38 02 57.     (N) 076 19 25.     (W)   SCALED
 HV0415* NAVD 88 ORTHO HEIGHT -     0.947 (meters)        3.11  (feet) ADJUSTED
 HV0415  ______________________________________________________________________
 HV0415  GEOID HEIGHT    -        -35.315 (meters)                     GEOID18
 HV0415  DYNAMIC HEIGHT  -          0.947 (meters)        3.11  (feet) COMP
 HV0415  MODELED GRAVITY -    979,970.4   (mgal)                       NAVD 88
 HV0415
 HV0415  VERT ORDER      -  FIRST     CLASS II
 HV0415
 HV0415.The horizontal coordinates were scaled from a map and have
 HV0415.an estimated accuracy of +/- 6 seconds.
 HV0415
 HV0415.The orthometric height was determined by differential leveling and
 HV0415.adjusted by the NATIONAL GEODETIC SURVEY
 HV0415.in June 1991.
 HV0415
 HV0415.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0415.GEOID18 height accuracy estimate available here.
 HV0415
 HV0415.Click photographs - Photos may exist for this station.
 HV0415
 HV0415.The dynamic height is computed by dividing the NAVD 88
 HV0415.geopotential number by the normal gravity value computed on the
 HV0415.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0415.degrees latitude (g = 980.6199 gals.).
 HV0415
 HV0415.The modeled gravity was interpolated from observed gravity values.
 HV0415
 HV0415;                    North         East    Units  Estimated Accuracy
 HV0415;SPC MD       -    42,680.      459,370.      MT  (+/- 180 meters Scaled)
 HV0415
 HV0415_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH838120(NAD 83)
 HV0415
 HV0415                          SUPERSEDED SURVEY CONTROL
 HV0415
 HV0415  NGVD 29 (11/26/84)    1.241  (m)            4.07   (f) ADJUSTED    1 2
 HV0415
 HV0415.Superseded values are not recommended for survey control.
 HV0415
 HV0415.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0415.See file dsdata.pdf to determine how the superseded data were derived.
 HV0415
 HV0415_MARKER: DD = SURVEY DISK
 HV0415_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV0415_MARK LOGO: CGS+SS
 HV0415_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0415
 HV0415  HISTORY     - Date     Condition        Report By
 HV0415  HISTORY     - 1934     MONUMENTED       MDGS
 HV0415  HISTORY     - 1941     GOOD             CGS
 HV0415  HISTORY     - 1942     GOOD             CGS
 HV0415
 HV0415                          STATION DESCRIPTION
 HV0415
 HV0415'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0415'AT POINT LOOKOUT.
 HV0415'AT POINT LOOKOUT, SAINT MARYS COUNTY, ABOUT 0.9 MILE NORTH ALONG
 HV0415'STATE HIGHWAY 5 FROM THE LIGHTHOUSE, ABOUT 0.2 MILE WEST OF THE
 HV0415'POINT LOOKOUT HOTEL, AT THE CROSSING OF TENTH STREET, 32 FEET
 HV0415'WEST OF THE CENTER LINE OF THE HIGHWAY, 23 FEET NORTH OF THE
 HV0415'CENTER LINE OF TENTH STREET, 13 FEET SOUTHEAST OF POLE 51, AND
 HV0415'1 FOOT EAST OF A WHITE WOODEN POST STENCILED U.S.B.M.
 HV0415'A STATE SURVEY STANDARD DISK, SET IN THE TOP OF A CONCRETE POST.
 HV0415'NOTE-- DELETE ABOUT 0.2 MILE WEST OF THE POINT LOOKOUT HOTEL
 HV0415'IT IS ABOUT 600 FEET.
 HV0415
 HV0415                          STATION RECOVERY (1942)
 HV0415
 HV0415'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0415'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0365 ***********************************************************************
 JV0365  DESIGNATION -  3
 JV0365  PID         -  JV0365
 JV0365  STATE/COUNTY-  MD/KENT
 JV0365  COUNTRY     -  US
 JV0365  USGS QUAD   -  LANGFORD CREEK (2016)
 JV0365
 JV0365                         *CURRENT SURVEY CONTROL
 JV0365  ______________________________________________________________________
 JV0365* NAD 83(1986) POSITION- 39 06 20.     (N) 076 08 44.     (W)   SCALED
 JV0365* NAVD 88 ORTHO HEIGHT -     3.846 (meters)       12.62  (feet) ADJUSTED
 JV0365  ______________________________________________________________________
 JV0365  GEOID HEIGHT    -        -33.518 (meters)                     GEOID18
 JV0365  DYNAMIC HEIGHT  -          3.844 (meters)       12.61  (feet) COMP
 JV0365  MODELED GRAVITY -    980,100.3   (mgal)                       NAVD 88
 JV0365
 JV0365  VERT ORDER      -  SECOND    CLASS 0
 JV0365
 JV0365.The horizontal coordinates were scaled from a map and have
 JV0365.an estimated accuracy of +/- 6 seconds.
 JV0365
 JV0365.The orthometric height was determined by differential leveling and
 JV0365.adjusted by the NATIONAL GEODETIC SURVEY
 JV0365.in June 1991.
 JV0365
 JV0365.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0365.GEOID18 height accuracy estimate available here.
 JV0365
 JV0365.Click photographs - Photos may exist for this station.
 JV0365
 JV0365.The dynamic height is computed by dividing the NAVD 88
 JV0365.geopotential number by the normal gravity value computed on the
 JV0365.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0365.degrees latitude (g = 980.6199 gals.).
 JV0365
 JV0365.The modeled gravity was interpolated from observed gravity values.
 JV0365
 JV0365;                    North         East    Units  Estimated Accuracy
 JV0365;SPC MD       -   160,070.      473,900.      MT  (+/- 180 meters Scaled)
 JV0365
 JV0365_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ009291(NAD 83)
 JV0365
 JV0365                          SUPERSEDED SURVEY CONTROL
 JV0365
 JV0365  NGVD 29 (11/26/84)    4.085  (m)           13.40   (f) ADJUSTED    2 0
 JV0365
 JV0365.Superseded values are not recommended for survey control.
 JV0365
 JV0365.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0365.See file dsdata.pdf to determine how the superseded data were derived.
 JV0365
 JV0365_MARKER: H = DRILL HOLE
 JV0365_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0365_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0365+STABILITY: SURFACE MOTION
 JV0365
 JV0365  HISTORY     - Date     Condition        Report By
 JV0365  HISTORY     - UNK      MONUMENTED       MDSFC
 JV0365  HISTORY     - 1961     GOOD             CGS
 JV0365
 JV0365                          STATION DESCRIPTION
 JV0365
 JV0365'DESCRIBED BY COAST AND GEODETIC SURVEY 1961
 JV0365'4.6 MI SW FROM POMONA.
 JV0365'4.6 MILES SOUTHWEST ON STATE HIGHWAY 289 AND DIRT ROAD FROM
 JV0365'BOND CHAPEL IN POMONA TO CLIFFS POINT.  78.5 FEET SOUTH OF THE
 JV0365'WEST CORNER OF A CONCRETE PORCH OF THE HOUSE AND 46 FEET EAST OF A
 JV0365'23 INCH WALNUT TREE.  BENCH MARK 3 (1940) IS THE CENTER OF A
 JV0365'CONCRETE POST MARKING TRIANGULATION STATION BROWN 1909, ON THE
 JV0365'NORTHWEST SHORE OF THE CHESTER RIVER, ON TOP OF THE BLUFF AND IN
 JV0365'THE FRONT YARD OF THE DOROTHY J. STOOP RESIDENCE.  THE TOP OF THE
 JV0365'POST HAS A CENTER HOLE SURROUNDED BY A TRIANGLE WITH COUNTER
 JV0365'SUNKEN LETTERS USCS UNDER THE BASE OF THE TRIANGLE.  TIDAL STATION
 JV0365'51.  CLIFFS POINT, CHESTER RIVER.  NOTE-- THIS MARK MUST NOT BE
 JV0365'VISITED WITHOUT PERMISSION FROM LAND OWNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW0496 ***********************************************************************
 FW0496  DESIGNATION -  3
 FW0496  PID         -  FW0496
 FW0496  STATE/COUNTY-  MD/SOMERSET
 FW0496  COUNTRY     -  US
 FW0496  USGS QUAD   -  CRISFIELD (2016)
 FW0496
 FW0496                         *CURRENT SURVEY CONTROL
 FW0496  ______________________________________________________________________
 FW0496* NAD 83(1986) POSITION- 37 59 30.     (N) 075 50 35.     (W)   SCALED
 FW0496* NAVD 88 ORTHO HEIGHT -     1.041 (meters)        3.42  (feet) ADJUSTED
 FW0496  ______________________________________________________________________
 FW0496  GEOID HEIGHT    -        -36.088 (meters)                     GEOID18
 FW0496  DYNAMIC HEIGHT  -          1.041 (meters)        3.42  (feet) COMP
 FW0496  MODELED GRAVITY -    979,972.9   (mgal)                       NAVD 88
 FW0496
 FW0496  VERT ORDER      -  FIRST     CLASS II
 FW0496
 FW0496.The horizontal coordinates were scaled from a map and have
 FW0496.an estimated accuracy of +/- 6 seconds.
 FW0496
 FW0496.The orthometric height was determined by differential leveling and
 FW0496.adjusted by the NATIONAL GEODETIC SURVEY
 FW0496.in June 1991.
 FW0496
 FW0496.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW0496.GEOID18 height accuracy estimate available here.
 FW0496
 FW0496.Click photographs - Photos may exist for this station.
 FW0496
 FW0496.The dynamic height is computed by dividing the NAVD 88
 FW0496.geopotential number by the normal gravity value computed on the
 FW0496.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 FW0496.degrees latitude (g = 980.6199 gals.).
 FW0496
 FW0496.The modeled gravity was interpolated from observed gravity values.
 FW0496
 FW0496;                    North         East    Units  Estimated Accuracy
 FW0496;SPC MD       -    36,720.      501,630.      MT  (+/- 180 meters Scaled)
 FW0496
 FW0496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH259052(NAD 83)
 FW0496
 FW0496                          SUPERSEDED SURVEY CONTROL
 FW0496
 FW0496  NGVD 29 (11/26/84)    1.290  (m)            4.23   (f) ADJUSTED    1 2
 FW0496
 FW0496.Superseded values are not recommended for survey control.
 FW0496
 FW0496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW0496.See file dsdata.pdf to determine how the superseded data were derived.
 FW0496
 FW0496_MARKER: S = SPIKE
 FW0496_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 FW0496_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 FW0496+STABILITY: SURFACE MOTION
 FW0496
 FW0496  HISTORY     - Date     Condition        Report By
 FW0496  HISTORY     - UNK      MONUMENTED       CGS
 FW0496  HISTORY     - 1942     GOOD             CGS
 FW0496  HISTORY     - 1963     MARK NOT FOUND   CGS
 FW0496
 FW0496                          STATION DESCRIPTION
 FW0496
 FW0496'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 FW0496'AT CRISFIELD.
 FW0496'NEW DESCRIPTION.  AT CRISFIELD, SOMERSET COUNTY, ON THE
 FW0496'PENNSYLVANIA RAILROAD, 47 FEET EAST OF THE CENTERLINE OF THE WARD
 FW0496'ROAD CROSSING, 33 FEET SOUTHEAST OF THE CENTERLINE OF THE TRACK,
 FW0496'AND 2 FEET LOWER THAN THE TRACK.  AN IRON SPIKE, SET IN THE TOP
 FW0496'OF A CONCRETE POST PROJECTING 2 INCHES ABOVE GROUND.  NOTE-- DEC.
 FW0496'1953 REPORT-- NOT RECOVERED.  CORRECTED DESCRIPTION ABOVE.
 FW0496
 FW0496                          STATION RECOVERY (1963)
 FW0496
 FW0496'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963
 FW0496'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7286 ***********************************************************************
 HV7286  DESIGNATION -  3
 HV7286  PID         -  HV7286
 HV7286  STATE/COUNTY-  MD/CALVERT
 HV7286  COUNTRY     -  US
 HV7286  USGS QUAD   -  NORTH BEACH (2016)
 HV7286
 HV7286                         *CURRENT SURVEY CONTROL
 HV7286  ______________________________________________________________________
 HV7286* NAD 83(1993) POSITION- 38 39 20.74728(N) 076 31 40.42910(W)   ADJUSTED
 HV7286* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 HV7286  ______________________________________________________________________
 HV7286  GEOID HEIGHT    -        -33.772 (meters)                     GEOID18
 HV7286  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV7286  HORZ ORDER      -  THIRD
 HV7286
 HV7286.The horizontal coordinates were established by classical geodetic methods
 HV7286.and adjusted by the National Geodetic Survey in November 1994.
 HV7286
 HV7286.The orthometric height was scaled from a topographic map.
 HV7286
 HV7286.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7286.GEOID18 height accuracy estimate available here.
 HV7286
 HV7286.Click photographs - Photos may exist for this station.
 HV7286
 HV7286.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7286
 HV7286. The following values were computed from the NAD 83(1993) position.
 HV7286
 HV7286;                    North         East     Units Scale Factor Converg.
 HV7286;SPC MD       -   109,899.817   441,092.068   MT  0.99995718   +0 17 46.7
 HV7286;SPC MD       -   360,562.98  1,447,149.56   sFT  0.99995718   +0 17 46.7
 HV7286;UTM  18      - 4,279,684.771   367,054.547   MT  0.99981765   -0 57 16.3
 HV7286
 HV7286!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7286!SPC MD       -   1.00000000  x   0.99995718  =   0.99995718
 HV7286!UTM  18      -   1.00000000  x   0.99981765  =   0.99981765
 HV7286
 HV7286_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6705479684(NAD 83)
 HV7286
 HV7286                          SUPERSEDED SURVEY CONTROL
 HV7286
 HV7286  NAD 83(1986)-  38 39 20.74505(N)    076 31 40.44278(W) AD(       ) 3
 HV7286  NAD 27      -  38 39 20.30500(N)    076 31 41.60400(W) AD(       ) 3
 HV7286
 HV7286.Superseded values are not recommended for survey control.
 HV7286
 HV7286.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7286.See file dsdata.pdf to determine how the superseded data were derived.
 HV7286
 HV7286_MARKER: DD = SURVEY DISK
 HV7286_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV7286_SP_SET: PLATFORM
 HV7286_STAMPING: NO 3 1944
 HV7286_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7286+STABILITY: SURFACE MOTION
 HV7286
 HV7286  HISTORY     - Date     Condition        Report By
 HV7286  HISTORY     - 1944     MONUMENTED       CGS
 HV7286  HISTORY     - 1960     GOOD             CGS
 HV7286
 HV7286                          STATION DESCRIPTION
 HV7286
 HV7286'DESCRIBED BY COAST AND GEODETIC SURVEY 1944 (TBR)
 HV7286'STATION IS A BRONZE DISK STAMPED NO 3 1944.  IT IS ON ROLL AND
 HV7286'PITCH PLATFORM BETWEEN BUILDINGS 3 AND 4 AT NAVAL RESEARCH
 HV7286'LABORATORY, CHESAPEAKE BEACH.
 HV7286'
 HV7286'HALF-TIDE LEVEL (APPROXIMATE SEA LEVEL) ELEVATION 92.19 FEET.
 HV7286
 HV7286                          STATION RECOVERY (1960)
 HV7286
 HV7286'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7286'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3941 ***********************************************************************
 JU3941  DESIGNATION -  3
 JU3941  PID         -  JU3941
 JU3941  STATE/COUNTY-  MD/CECIL
 JU3941  COUNTRY     -  US
 JU3941  USGS QUAD   -  NORTH EAST (2016)
 JU3941
 JU3941                         *CURRENT SURVEY CONTROL
 JU3941  ______________________________________________________________________
 JU3941* NAD 83(1991) POSITION- 39 30 10.17062(N) 075 54 56.65827(W)   ADJUSTED
 JU3941* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3941  ______________________________________________________________________
 JU3941  GEOID HEIGHT    -        -33.319 (meters)                     GEOID18
 JU3941  LAPLACE CORR    -         -0.84  (seconds)                    DEFLEC18
 JU3941  HORZ ORDER      -  THIRD
 JU3941
 JU3941.The horizontal coordinates were established by classical geodetic methods
 JU3941.and adjusted by the National Geodetic Survey in January 1992.
 JU3941
 JU3941.The orthometric height was scaled from a topographic map.
 JU3941
 JU3941.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3941.GEOID18 height accuracy estimate available here.
 JU3941
 JU3941.Click photographs - Photos may exist for this station.
 JU3941
 JU3941.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3941
 JU3941. The following values were computed from the NAD 83(1991) position.
 JU3941
 JU3941;                    North         East     Units Scale Factor Converg.
 JU3941;SPC MD       -   204,382.400   493,255.980   MT  1.00000967   +0 40 49.9
 JU3941;SPC MD       -   670,544.59  1,618,290.66   sFT  1.00000967   +0 40 49.9
 JU3941;UTM  18      - 4,372,978.292   421,268.255   MT  0.99967632   -0 34 57.2
 JU3941
 JU3941!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3941!SPC MD       -   1.00000526  x   1.00000967  =   1.00001493
 JU3941!UTM  18      -   1.00000526  x   0.99967632  =   0.99968158
 JU3941
 JU3941:                Primary Azimuth Mark                     Grid Az
 JU3941:SPC MD       -  4                                        216 13 21.5
 JU3941:UTM  18      -  4                                        217 29 08.6
 JU3941
 JU3941_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2126872978(NAD 83)
 JU3941
 JU3941|---------------------------------------------------------------------|
 JU3941| PID    Reference Object                     Distance      Geod. Az  |
 JU3941|                                                           dddmmss.s |
 JU3941| JU3936 ARNOLD POINT CHAN FRONT RNG LT      APPROX. 0.7 KM 0165638.9 |
 JU3941| JU3928 ARNOLD POINT CHAN REAR RNG LT       APPROX. 1.6 KM 0325430.6 |
 JU3941| CB1164 3 RM 1                                9.540 METERS 15013     |
 JU3941| CB1165 3 RM 2                               18.930 METERS 15013     |
 JU3941| JU3587 4                                   APPROX. 0.7 KM 2165411.4 |
 JU3941|---------------------------------------------------------------------|
 JU3941
 JU3941                          SUPERSEDED SURVEY CONTROL
 JU3941
 JU3941  NAD 83(1986)-  39 30 10.16323(N)    075 54 56.66544(W) AD(       ) 3
 JU3941  NAD 27      -  39 30 09.76500(N)    075 54 57.88100(W) AD(       ) 3
 JU3941
 JU3941.Superseded values are not recommended for survey control.
 JU3941
 JU3941.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3941.See file dsdata.pdf to determine how the superseded data were derived.
 JU3941
 JU3941_MARKER: DD = SURVEY DISK
 JU3941_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3941_STAMPING: NO. 3
 JU3941_MARK LOGO: USACE
 JU3941_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3941+STABILITY: SURFACE MOTION
 JU3941
 JU3941  HISTORY     - Date     Condition        Report By
 JU3941  HISTORY     - 1937     MONUMENTED       USACE
 JU3941  HISTORY     - 1938     GOOD             CGS
 JU3941  HISTORY     - 1984     MARK NOT FOUND   USPSQD
 JU3941
 JU3941                          STATION DESCRIPTION
 JU3941
 JU3941'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3941'LOCATED ON THE S SIDE OF ELK RIVER ON TOWN POINT NECK AT TOWN
 JU3941'POINT WHARF.  IT IS 40.1 METERS INSHORE FROM THE END OF THE WHARF,
 JU3941'7.3 METERS FROM A CONCRETE BULKHEAD ON THE SW, AND 6.2 METERS
 JU3941'FROM A WOOD BULKHEAD ON THE NE.
 JU3941'
 JU3941'THE STATION IS MARKED BY A STANDARD U.S.E. DISK STAMPED NO.3 SET
 JU3941'ATOP A 6-INCH SQUARE CONCRETE POST AND PROJECTS 3 INCHES ABOVE
 JU3941'GROUND.
 JU3941'
 JU3941'THE REFERENCE MARKS ARE STANDARD U.S.E. DISKS SET ATOP CONCRETE
 JU3941'POSTS.
 JU3941
 JU3941                          STATION RECOVERY (1938)
 JU3941
 JU3941'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3941'STATION AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.
 JU3941'
 JU3941'STATION IS LOCATED 6 MILES WSW OF CHESAPEAKE CITY ON THE S SIDE
 JU3941'OF ELK RIVER ON TOWN POINT NECK ON OLD TOWN POINT WHARF.  STATION
 JU3941'MARK IS ON AN EARTH FILLED CONCRETE AND TIMBER BULKHEADED WHARF,
 JU3941'40.1 METERS INSHORE FROM THE EXTREME END OF THE WOOD EXTENSION
 JU3941'OF THE WHARF, 7.3 METERS NE OF CONCRETE BULKHEAD, AND 6.2 METERS
 JU3941'SW OF TIMBER BULKHEAD.
 JU3941'
 JU3941'THE STATION MARK IS A STANDARD U.S.E.D. DISK ATOP A 6-INCH SQUARE
 JU3941'CONCRETE POST AND PROJECTS 3 INCHES ABOVE GROUND.
 JU3941'
 JU3941'REFERENCE MARK NO.1 IS 9.540 METERS SE OF THE STATION MARK ON
 JU3941'THE EARTH FILL.  REFERENCE MARK NO.2 IS 18.930 METERS SE OF THE
 JU3941'STATION MARK ON LINE WITH THE STATION AND REFERENCE MARK NO.1
 JU3941'ON THE EARTH FILL.  BOTH REFERENCE MARKS ARE STANDARD
 JU3941'U.S.E. REFERENCE DISKS ATOP 6-INCH SQUARE CONCRETE POSTS
 JU3941'PROJECTING 1 INCH ABOVE GROUND.
 JU3941'
 JU3941'TO REACH THE STATION FROM THE CANAL BRIDGE IN CHESAPEAKE CITY
 JU3941'FOLLOW U.S. HIGHWAY 213 S 3.8 MILES.  TAKE RIGHT FORK AT SIGN
 JU3941'TO TOWN POINT.  GO 3.3 MILES, TURN RIGHT AND TAKE A LEFT FORK,
 JU3941'GO 0.9 MILE TO A GATE.  THE STATION IS NW OF THE GATE ABOUT 50
 JU3941'YARDS.
 JU3941
 JU3941                          STATION RECOVERY (1984)
 JU3941
 JU3941'RECOVERY NOTE BY US POWER SQUADRON 1984 (AHJ)
 JU3941'STATION MARK AND REFERENCE MARKS NO LONGER EXIST.  ENTIRE AREA HAS
 JU3941'BEEN REBUILT.  3 NEW MARKS HAVE BEEN INSTALLED BY NOS.  NO. 5-1972
 JU3941'IS AT WEST CORNER OF USE TV CAMERA TOWER FOUNDATION.  NO. 1-1975 IS
 JU3941'AT SOUTH CORNER OF FUEL TANK FOUNDATION.  THESE TWO ARE INSIDE US
 JU3941'GOVT PROPERTY FENCE.  NO. 2-1975 IS 3 FT FROM NORTH END OF
 JU3941'CONCRETE SEA WALL (ON TOP SURFACE OF SEA WALL) ON PRIVATE
 JU3941'PROPERTY, 69 FT.  SOUTH OF STATION TOWN POINT WHARF - 1965
 JU3941'(QSN-543).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6317 ***********************************************************************
 DG6317  DESIGNATION -  3
 DG6317  PID         -  DG6317
 DG6317  STATE/COUNTY-  MD/TALBOT
 DG6317  COUNTRY     -  US
 DG6317  USGS QUAD   -  EASTON (2016)
 DG6317
 DG6317                         *CURRENT SURVEY CONTROL
 DG6317  ______________________________________________________________________
 DG6317* NAD 83(1986) POSITION- 38 46 06.4    (N) 076 05 36.2    (W)   HD_HELD2
 DG6317* NAVD 88 ORTHO HEIGHT -     2.756 (meters)        9.04  (feet) ADJUSTED
 DG6317  ______________________________________________________________________
 DG6317  GEOID HEIGHT    -        -34.649 (meters)                     GEOID18
 DG6317  DYNAMIC HEIGHT  -          2.755 (meters)        9.04  (feet) COMP
 DG6317  MODELED GRAVITY -    980,036.3   (mgal)                       NAVD 88
 DG6317
 DG6317  VERT ORDER      -  SECOND    CLASS I
 DG6317
 DG6317.The horizontal coordinates were established by autonomous hand held GPS
 DG6317.observations and have an estimated accuracy of +/- 10 meters.
 DG6317
 DG6317.The orthometric height was determined by differential leveling and
 DG6317.adjusted by the NATIONAL GEODETIC SURVEY
 DG6317.in September 2004.
 DG6317
 DG6317.No vertical observational check was made to the station.
 DG6317
 DG6317.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6317.GEOID18 height accuracy estimate available here.
 DG6317
 DG6317.Click photographs - Photos may exist for this station.
 DG6317
 DG6317.The dynamic height is computed by dividing the NAVD 88
 DG6317.geopotential number by the normal gravity value computed on the
 DG6317.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6317.degrees latitude (g = 980.6199 gals.).
 DG6317
 DG6317.The modeled gravity was interpolated from observed gravity values.
 DG6317
 DG6317;                    North         East    Units  Estimated Accuracy
 DG6317;SPC MD       -   122,693.      478,787.      MT  (+/- 10 meters HH2 GPS)
 DG6317
 DG6317_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0501291648(NAD 83)
 DG6317
 DG6317                          SUPERSEDED SURVEY CONTROL
 DG6317
 DG6317.No superseded survey control is available for this station.
 DG6317
 DG6317_MARKER: DJ = TIDAL STATION DISK
 DG6317_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6317_STAMPING: BM 3 1999
 DG6317_MARK LOGO: USACE
 DG6317_PROJECTION: FLUSH
 DG6317_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6317_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6317+STABILITY: SURFACE MOTION
 DG6317_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6317+SATELLITE: SATELLITE OBSERVATIONS - November 14, 2006
 DG6317
 DG6317  HISTORY     - Date     Condition        Report By
 DG6317  HISTORY     - 1999     MONUMENTED       USACE
 DG6317  HISTORY     - 20000818 GOOD             MDSHA
 DG6317  HISTORY     - 20061114 GOOD             USPSQD
 DG6317
 DG6317                          STATION DESCRIPTION
 DG6317
 DG6317'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 DG6317'THE MARK IS LOCATED ABOUT 4.6 MI (7.4 KM) EAST-NORTHEAST OF NEWCOMB,
 DG6317'4.0 MI (6.44 KM) SOUTHEAST OF UNIONVILLE AND 1.0 MI (1.61 KM)
 DG6317'WEST-SOUTHWEST OF EASTON.  OWNERSHIP--ROAD RIGHT-OF-WAY.  TO REACH THE
 DG6317'MARK FROM THE POST OFFICE IN EASTON, GO WEST ALONG DOVER STREET FOR
 DG6317'0.14 MILES (0.23 KM) TO WASHINGTON STREET.  TURN LEFT AND GO SOUTH
 DG6317'ALONG WASHINGTON STREET FOR 0.12 MILES (0.19 KM) TO PORT STREET.  TURN
 DG6317'RIGHT AND GO WEST ALONG STATE HIGHWAY 334 (PORT STREET) FOR 0.6 MILES
 DG6317'(1.0 KM) TO STATE HIGHWAY 322.  CONTINUE WEST ALONG STATE HIGHWAY 334
 DG6317'FOR 0.38 MILES (0.61 KM) TO THE MARK ON THE RIGHT.  IT IS 22.3 FEET
 DG6317'(6.8 M) NORTH OF THE CENTER LINE OF THE ROAD, 8.6 FEET (2.6 M) EAST OF
 DG6317'A METAL SIGN POLE, 60.5 FEET (18.4 M) NORTHEAST OF POWER POLE NUMBER
 DG6317'BW-10-150, 62.8 FEET (19.1 M) NORTHWEST OF POWER POLE NUMBER
 DG6317'BW-10-140, 46.1 FEET (14.1 M) NORTH AND ACROSS PORT STREET FROM THE
 DG6317'NORTHEAST CORNER OF A CHAIN LINK FENCE AROUND MCM GAS STATION.  A
 DG6317'USE DISK SET IN THE TOP OF A MASS OF CONCRETE WHICH IS FLUSH WITH THE
 DG6317'GROUND AND ABOUT LEVEL WITH THE ROAD.
 DG6317
 DG6317                          STATION RECOVERY (2006)
 DG6317
 DG6317'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 DG6317'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6039 ***********************************************************************
 DN6039  DESIGNATION -  3
 DN6039  PID         -  DN6039
 DN6039  STATE/COUNTY-  MD/CARROLL
 DN6039  COUNTRY     -  US
 DN6039  USGS QUAD   -  WESTMINSTER (2016)
 DN6039
 DN6039                         *CURRENT SURVEY CONTROL
 DN6039  ______________________________________________________________________
 DN6039* NAD 83(1986) POSITION- 39 35 26.62   (N) 076 58 08.72   (W)   HD_HELD1
 DN6039* NAVD 88 ORTHO HEIGHT -   209.871 (meters)      688.55  (feet) ADJUSTED
 DN6039  ______________________________________________________________________
 DN6039  GEOID HEIGHT    -        -32.242 (meters)                     GEOID18
 DN6039  DYNAMIC HEIGHT  -        209.762 (meters)      688.19  (feet) COMP
 DN6039  MODELED GRAVITY -    980,102.5   (mgal)                       NAVD 88
 DN6039
 DN6039  VERT ORDER      -  SECOND    CLASS II
 DN6039
 DN6039.The horizontal coordinates were determined by differentially corrected
 DN6039.hand held GPS observations or other comparable positioning techniques
 DN6039.and have an estimated accuracy of +/- 3 meters.
 DN6039
 DN6039.The orthometric height was determined by differential leveling and
 DN6039.adjusted by the NATIONAL GEODETIC SURVEY
 DN6039.in June 2012.
 DN6039
 DN6039.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6039.GEOID18 height accuracy estimate available here.
 DN6039
 DN6039.Click photographs - Photos may exist for this station.
 DN6039
 DN6039.The dynamic height is computed by dividing the NAVD 88
 DN6039.geopotential number by the normal gravity value computed on the
 DN6039.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6039.degrees latitude (g = 980.6199 gals.).
 DN6039
 DN6039.The modeled gravity was interpolated from observed gravity values.
 DN6039
 DN6039;                    North         East    Units  Estimated Accuracy
 DN6039;SPC MD       -   213,588.7     402,655.4     MT  (+/- 3 meters HH1 GPS) 
 DN6039
 DN6039_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3091384185(NAD 83)
 DN6039
 DN6039                          SUPERSEDED SURVEY CONTROL
 DN6039
 DN6039.No superseded survey control is available for this station.
 DN6039
 DN6039_MARKER: Q = CHISELED SQUARE
 DN6039_SETTING: 80 = SET IN A BOULDER
 DN6039_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DN6039_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6039+STABILITY: SURFACE MOTION
 DN6039
 DN6039  HISTORY     - Date     Condition        Report By
 DN6039  HISTORY     - 1982     MONUMENTED       MDSHA
 DN6039  HISTORY     - 20080123 GOOD             MDSHA
 DN6039  HISTORY     - 20140524 GOOD             RODCON
 DN6039
 DN6039                          STATION DESCRIPTION
 DN6039
 DN6039'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6039'THE MARK IS LOCATED ABOUT 6.6 MI (10.6 KM) SOUTHWEST OF MANCHESTER,
 DN6039'6.4 MI (10.3 KM) WEST OF HAMPSTEAD AND 1.8 MI (2.9 KM) NORTHEAST OF
 DN6039'WESTMINSTER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DN6039'
 DN6039'TO REACH THE MARK FROM THE INTERSECTION OF MAIN STREET AND MARYLAND
 DN6039'HIGHWAY 27 IN WESTMINSTER, PROCEED NORTHEAST ON MARYLAND HIGHWAY 27
 DN6039'FOR 1.85 MI (3.0 KM) TO THE MARK ON THE LEFT.
 DN6039'
 DN6039'IT IS A SQUARE CUT IN THE TOP OF A ROCK BOULDER, 43.5 FT (13.3 M)
 DN6039'NORTHWEST OF THE CENTERLINE OF MARYLAND HIGHWAY 27 AND 238.O FT (72.5
 DN6039'M) SOUTHWEST OF THE JUNCTION OF MARYLAND HIGHWAY 27 AND LUCABAUGH
 DN6039'MILLING ROAD.
 DN6039
 DN6039                          STATION RECOVERY (2014)
 DN6039
 DN6039'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DN6039'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7828 ***********************************************************************
 DR7828  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7828  DESIGNATION -  3
 DR7828  PID         -  DR7828
 DR7828  STATE/COUNTY-  MD/QUEEN ANNES
 DR7828  COUNTRY     -  US
 DR7828  USGS QUAD   -  KENT ISLAND (2016)
 DR7828
 DR7828                         *CURRENT SURVEY CONTROL
 DR7828  ______________________________________________________________________
 DR7828* NAD 83(2011) POSITION- 38 53 32.07334(N) 076 21 01.91802(W)   ADJUSTED
 DR7828* NAD 83(2011) ELLIP HT-   -30.505 (meters)        (02/02/22)   ADJUSTED
 DR7828* NAD 83(2011) EPOCH   -  2010.00
 DR7828* NAVD 88 ORTHO HEIGHT -     3.23  (meters)       10.6   (feet) GPS OBS
 DR7828  ______________________________________________________________________
 DR7828  GEOID HEIGHT    -        -33.742 (meters)                     GEOID18
 DR7828  NAD 83(2011) X  -  1,173,020.735 (meters)                     COMP
 DR7828  NAD 83(2011) Y  - -4,830,435.322 (meters)                     COMP
 DR7828  NAD 83(2011) Z  -  3,982,994.087 (meters)                     COMP
 DR7828  LAPLACE CORR    -         -4.21  (seconds)                    DEFLEC18
 DR7828
 DR7828  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7828  Standards:
 DR7828         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7828            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7828  -------------------------------------------------------------------
 DR7828  NETWORK    0.75   1.78           0.33   0.28   0.91     -0.15940595
 DR7828  -------------------------------------------------------------------
 DR7828  Click here for local accuracies and other accuracy information.
 DR7828
 DR7828.The horizontal coordinates were established by GPS observations
 DR7828.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7828
 DR7828.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7828.been affixed to the stable North American tectonic plate. See 
 DR7828.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7828
 DR7828.The horizontal coordinates are valid at the epoch date displayed above
 DR7828.which is a decimal equivalence of Year/Month/Day.
 DR7828
 DR7828.The orthometric height was determined by GPS observations and a
 DR7828.high-resolution geoid model using precise GPS observation and
 DR7828.processing techniques.
 DR7828
 DR7828.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7828.GEOID18 height accuracy estimate available here.
 DR7828
 DR7828.Click photographs - Photos may exist for this station.
 DR7828
 DR7828.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7828
 DR7828.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7828
 DR7828.The ellipsoidal height was determined by GPS observations
 DR7828.and is referenced to NAD 83.
 DR7828
 DR7828. The following values were computed from the NAD 83(2011) position.
 DR7828
 DR7828;                    North         East     Units Scale Factor Converg.
 DR7828;SPC MD       -   136,244.593   456,342.948   MT  0.99994989   +0 24 27.5
 DR7828;SPC MD       -   446,995.80  1,497,185.16   sFT  0.99994989   +0 24 27.5
 DR7828;UTM  18      - 4,305,685.514   382,875.502   MT  0.99976892   -0 50 52.9
 DR7828
 DR7828!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7828!SPC MD       -   1.00000479  x   0.99994989  =   0.99995468
 DR7828!UTM  18      -   1.00000479  x   0.99976892  =   0.99977371
 DR7828
 DR7828_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8287505685(NAD 83)
 DR7828
 DR7828                          SUPERSEDED SURVEY CONTROL
 DR7828
 DR7828.No superseded survey control is available for this station.
 DR7828
 DR7828_MARKER: DD = SURVEY DISK
 DR7828_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7828_STAMPING: 3
 DR7828_MARK LOGO: MD-035
 DR7828_PROJECTION: RECESSED 21 CENTIMETERS
 DR7828_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7828+STABILITY: SURFACE MOTION
 DR7828_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7828+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7828
 DR7828  HISTORY     - Date     Condition        Report By
 DR7828  HISTORY     - UNK      MONUMENTED       MD-035
 DR7828  HISTORY     - 20210309 GOOD             MDSHA
 DR7828
 DR7828                          STATION DESCRIPTION
 DR7828
 DR7828'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7828'THE MARK IS LOCATED ABOUT 5.4 MI (8.7 KM) NORTHWEST OF CLAIBORNE, 5.3
 DR7828'MI (8.5 KM) SOUTHWEST OF DOMINION AND 1.1 MI (1.8 KM) NORTHWEST OF
 DR7828'ROMANCOKE.
 DR7828'
 DR7828'TO REACH FROM THE US 50/MD 8 INTERCHANGE IN STEVENSVILLE, MD, GO SOUTH
 DR7828'ON MD ROUTE 8 FOR 6.7 MI (10.8 KM) TO THE INTERSECTION OF OREGON ROAD
 DR7828'AND THE MARK ON THE RIGHT IN THE SOUTHWEST ANGLE.
 DR7828'
 DR7828'THE MARK IS 81.3 FT (24.8 M) SOUTH-SOUTHEAST OF A DPL POWER LINE POLE
 DR7828'NUMBERED 25601-12558, 44.8 FT (13.7 M) WEST OF THE CENTERLINE OF STATE
 DR7828'ROUTE 8, 41.2 FT (12.6 M) SOUTH OF THE CENTERLINE OF OREGON ROAD, 26.7
 DR7828'FT (8.1 M) SOUTHWEST OF A SEWER MANHOLE, 8.3 FT (2.5 M) EAST OF THE
 DR7828'CENTERLINE OF A PAVED BIKE TRAIL AND SET IN THE TOP OF A 12-IN (30 CM)
 DR7828'ROUND CONCRETE MONUMENT RECESSED 0.7 FT (21 CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2156 ***********************************************************************
 HU2156  DESIGNATION -  3 KEM
 HU2156  PID         -  HU2156
 HU2156  STATE/COUNTY-  MD/WICOMICO
 HU2156  COUNTRY     -  US
 HU2156  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2156
 HU2156                         *CURRENT SURVEY CONTROL
 HU2156  ______________________________________________________________________
 HU2156* NAD 83(1986) POSITION- 38 23 51.9    (N) 075 45 21.2    (W)   HD_HELD2
 HU2156* NAVD 88 ORTHO HEIGHT -     3.807 (meters)       12.49  (feet) ADJUSTED
 HU2156  ______________________________________________________________________
 HU2156  GEOID HEIGHT    -        -35.655 (meters)                     GEOID18
 HU2156  DYNAMIC HEIGHT  -          3.804 (meters)       12.48  (feet) COMP
 HU2156  MODELED GRAVITY -    980,010.6   (mgal)                       NAVD 88
 HU2156
 HU2156  VERT ORDER      -  SECOND    CLASS I
 HU2156
 HU2156.The horizontal coordinates were established by autonomous hand held GPS
 HU2156.observations and have an estimated accuracy of +/- 10 meters.
 HU2156
 HU2156.The orthometric height was determined by differential leveling and
 HU2156.adjusted by the NATIONAL GEODETIC SURVEY
 HU2156.in June 1991.
 HU2156
 HU2156.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2156.GEOID18 height accuracy estimate available here.
 HU2156
 HU2156.Click photographs - Photos may exist for this station.
 HU2156
 HU2156.The dynamic height is computed by dividing the NAVD 88
 HU2156.geopotential number by the normal gravity value computed on the
 HU2156.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2156.degrees latitude (g = 980.6199 gals.).
 HU2156
 HU2156.The modeled gravity was interpolated from observed gravity values.
 HU2156
 HU2156;                    North         East    Units  Estimated Accuracy
 HU2156;SPC MD       -    81,894.      508,675.      MT  (+/- 10 meters HH2 GPS)
 HU2156
 HU2156_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3399450218(NAD 83)
 HU2156
 HU2156                          SUPERSEDED SURVEY CONTROL
 HU2156
 HU2156  NGVD 29 (06/12/91)    4.055  (m)           13.30   (f) ADJUSTED    2 1
 HU2156
 HU2156.Superseded values are not recommended for survey control.
 HU2156
 HU2156.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2156.See file dsdata.pdf to determine how the superseded data were derived.
 HU2156
 HU2156_MARKER: DD = SURVEY DISK
 HU2156_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2156_STAMPING: 3 KEM 1977
 HU2156_MARK LOGO: USGS
 HU2156_PROJECTION: FLUSH
 HU2156_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2156_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2156+STABILITY: SURFACE MOTION
 HU2156_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2156+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2018
 HU2156
 HU2156  HISTORY     - Date     Condition        Report By
 HU2156  HISTORY     - 1977     MONUMENTED       USGS
 HU2156  HISTORY     - 19900308 GOOD             NGS
 HU2156  HISTORY     - 20180718 GOOD             ARCSHE
 HU2156
 HU2156                          STATION DESCRIPTION
 HU2156
 HU2156'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2156'0.7 KM (0.43 MI) NORTHEASTERLY ALONG STATE HIGHWAY 347 FROM ITS
 HU2156'JUNCTION WITH CHERRY WALK ROAD IN QUANTICO, THENCE 2.6 KM (1.62 MI)
 HU2156'NORTHERLY ALONG ATHOL ROAD, THENCE 0.9 KM (0.56 MI) WESTERLY ALONG
 HU2156'CHERRY WALK ROAD, 18.5 M (60.70 FT) NORTHWEST OF THE CENTER OF THE
 HU2156'ROAD, 9.6 M (31.50 FT) NORTHEAST OF THE CENTER OF HOLLODAY ROAD, 4.7
 HU2156'M (15.42 FT) NORTHWEST OF THE NORTH CORNER OF A 4 BY 4 FOOT ELECTRIC
 HU2156'HIGH VOLTAGE BOX NUMBER 712 59 18, 0.3 M (0.98 FT) SOUTHEAST OF A
 HU2156'WITNESS POST, LEVEL WITH THE ROADS, AND IN A CONCRETE MONUMENT THAT
 HU2156'IS FLUSH WITH THE GROUND SURFACE.
 HU2156
 HU2156                          STATION RECOVERY (2018)
 HU2156
 HU2156'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 HU2156'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1207 ***********************************************************************
 JV1207  DESIGNATION -  3 PRR
 JV1207  PID         -  JV1207
 JV1207  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1207  COUNTRY     -  US
 JV1207  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1207
 JV1207                         *CURRENT SURVEY CONTROL
 JV1207  ______________________________________________________________________
 JV1207* NAD 83(1986) POSITION- 39 19 54.     (N) 076 38 37.     (W)   SCALED
 JV1207* NAVD 88 ORTHO HEIGHT -    47.284 (meters)      155.13  (feet) ADJUSTED
 JV1207  ______________________________________________________________________
 JV1207  GEOID HEIGHT    -        -32.556 (meters)                     GEOID18
 JV1207  DYNAMIC HEIGHT  -         47.259 (meters)      155.05  (feet) COMP
 JV1207  MODELED GRAVITY -    980,103.9   (mgal)                       NAVD 88
 JV1207
 JV1207  VERT ORDER      -  SECOND    CLASS 0
 JV1207
 JV1207.The horizontal coordinates were scaled from a map and have
 JV1207.an estimated accuracy of +/- 6 seconds.
 JV1207
 JV1207.The orthometric height was determined by differential leveling and
 JV1207.adjusted by the NATIONAL GEODETIC SURVEY
 JV1207.in June 1991.
 JV1207
 JV1207.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1207.GEOID18 height accuracy estimate available here.
 JV1207
 JV1207.Click photographs - Photos may exist for this station.
 JV1207
 JV1207.The dynamic height is computed by dividing the NAVD 88
 JV1207.geopotential number by the normal gravity value computed on the
 JV1207.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1207.degrees latitude (g = 980.6199 gals.).
 JV1207
 JV1207.The modeled gravity was interpolated from observed gravity values.
 JV1207
 JV1207;                    North         East    Units  Estimated Accuracy
 JV1207;SPC MD       -   184,890.      430,730.      MT  (+/- 180 meters Scaled)
 JV1207
 JV1207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ583548(NAD 83)
 JV1207
 JV1207                          SUPERSEDED SURVEY CONTROL
 JV1207
 JV1207  NGVD 29 (11/26/84)   47.516  (m)          155.89   (f) ADJUSTED    2 0
 JV1207
 JV1207.Superseded values are not recommended for survey control.
 JV1207
 JV1207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1207.See file dsdata.pdf to determine how the superseded data were derived.
 JV1207
 JV1207_MARKER: B = BOLT
 JV1207_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1207_SP_SET: CULVERT
 JV1207_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1207
 JV1207  HISTORY     - Date     Condition        Report By
 JV1207  HISTORY     - UNK      MONUMENTED       PRR
 JV1207  HISTORY     - 1935     GOOD             CGS
 JV1207
 JV1207                          STATION DESCRIPTION
 JV1207
 JV1207'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1207'AT BALTIMORE.
 JV1207'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, AT THE SOUTHEAST
 JV1207'CORNER OF THE CROSSING OF UNION AVENUE, AND IN THE TOP OF A
 JV1207'STONE CULVERT.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4040 ***********************************************************************
 AE4040  DESIGNATION -  3 SKS
 AE4040  PID         -  AE4040
 AE4040  STATE/COUNTY-  MD/BALTIMORE
 AE4040  COUNTRY     -  US
 AE4040  USGS QUAD   -  MIDDLE RIVER (2016)
 AE4040
 AE4040                         *CURRENT SURVEY CONTROL
 AE4040  ______________________________________________________________________
 AE4040* NAD 83(1986) POSITION- 39 20 08.     (N) 076 25 36.     (W)   SCALED
 AE4040* NAVD 88 ORTHO HEIGHT -    10.246 (meters)       33.62  (feet) ADJUSTED
 AE4040  ______________________________________________________________________
 AE4040  GEOID HEIGHT    -        -33.015 (meters)                     GEOID18
 AE4040  DYNAMIC HEIGHT  -         10.240 (meters)       33.60  (feet) COMP
 AE4040  MODELED GRAVITY -    980,107.2   (mgal)                       NAVD 88
 AE4040
 AE4040  VERT ORDER      -  THIRD
 AE4040
 AE4040.This mark is at Martin State Airport (MTN)
 AE4040
 AE4040.The horizontal coordinates were scaled from a map and have
 AE4040.an estimated accuracy of +/- 6 seconds.
 AE4040
 AE4040.The orthometric height was determined by differential leveling and
 AE4040.adjusted by the NATIONAL GEODETIC SURVEY
 AE4040.in February 1998.
 AE4040
 AE4040.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4040.GEOID18 height accuracy estimate available here.
 AE4040
 AE4040.Click photographs - Photos may exist for this station.
 AE4040
 AE4040.The dynamic height is computed by dividing the NAVD 88
 AE4040.geopotential number by the normal gravity value computed on the
 AE4040.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4040.degrees latitude (g = 980.6199 gals.).
 AE4040
 AE4040.The modeled gravity was interpolated from observed gravity values.
 AE4040
 AE4040;                    North         East    Units  Estimated Accuracy
 AE4040;SPC MD       -   185,410.      449,430.      MT  (+/- 180 meters Scaled)
 AE4040
 AE4040_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ770549(NAD 83)
 AE4040
 AE4040                          SUPERSEDED SURVEY CONTROL
 AE4040
 AE4040.No superseded survey control is available for this station.
 AE4040
 AE4040_MARKER: DB = BENCH MARK DISK
 AE4040_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 AE4040_SP_SET: HEADWALL
 AE4040_STAMPING: 3 SKS 1966
 AE4040_MARK LOGO: USGS
 AE4040_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE4040_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4040+STABILITY: SURFACE MOTION
 AE4040
 AE4040  HISTORY     - Date     Condition        Report By
 AE4040  HISTORY     - 1966     MONUMENTED       USGS
 AE4040  HISTORY     - 19950223 GOOD             MCCRON
 AE4040  HISTORY     - 20090930 MARK NOT FOUND   MD-005
 AE4040
 AE4040                          STATION DESCRIPTION
 AE4040
 AE4040'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4040'STATION IS LOCATED IN MIDDLE RIVER ON THE NORTHERN BOUNDARY OF MARTIN
 AE4040'STATE AIRPORT. TO REACH THE STATION FROM THE POST OFFICE IN MIDDLE
 AE4040'RIVER, GO NORTH ON WILSON POINT ROAD (STATE ROAD 587) FOR 0.2 MI (0.3
 AE4040'KM) TO EASTERN BLVD (RT 150) .TURN RIGHT ON EASTERN BLVD AND GO EAST
 AE4040'FOR 0.1 MI (0.2 KM) TO STATION ON THE RIGHT IN A GRAVEL PARKING AREA.
 AE4040'STATION MARK IS SET IN THE TOP OF A CONCRETE HEADWALL.  IT IS 41.5 FT
 AE4040'(12.6 M) SOUTH OF THE CENTERLINE OF THE EASTBOUND LANE OF EASTERN BLVD
 AE4040'(RT 150) , 19.0 FT (5.8 M) WEST OF THE CENTERLINE OF THE EASTERNMOST
 AE4040'GRAVEL ENTRANCE TO THE PARKING AREA AND 55.0 FT (16.8 M) EAST OF A
 AE4040'AIRPORT LIGHT POLE.
 AE4040
 AE4040                          STATION RECOVERY (2009)
 AE4040
 AE4040'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (PAS)
 AE4040'ATTEMPTED RECOVERY BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN
 AE4040'2009 (PAS). THE CONCRETE HEADWALL WAS UNABLE TO BE FOUND. A NEW
 AE4040'SIDEWALK MAY HAVE CAUSED THE STATION TO BE LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7815 ***********************************************************************
 DR7815  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7815  DESIGNATION -  30
 DR7815  PID         -  DR7815
 DR7815  STATE/COUNTY-  MD/QUEEN ANNES
 DR7815  COUNTRY     -  US
 DR7815  USGS QUAD   -  SUDLERSVILLE (2017)
 DR7815
 DR7815                         *CURRENT SURVEY CONTROL
 DR7815  ______________________________________________________________________
 DR7815* NAD 83(2011) POSITION- 39 11 42.48023(N) 075 48 30.60650(W)   ADJUSTED
 DR7815* NAD 83(2011) ELLIP HT-   -13.698 (meters)        (02/02/22)   ADJUSTED
 DR7815* NAD 83(2011) EPOCH   -  2010.00
 DR7815* NAVD 88 ORTHO HEIGHT -    20.12  (meters)       66.0   (feet) GPS OBS
 DR7815  ______________________________________________________________________
 DR7815  GEOID HEIGHT    -        -33.819 (meters)                     GEOID18
 DR7815  NAD 83(2011) X  -  1,213,474.903 (meters)                     COMP
 DR7815  NAD 83(2011) Y  - -4,798,600.130 (meters)                     COMP
 DR7815  NAD 83(2011) Z  -  4,009,120.580 (meters)                     COMP
 DR7815  LAPLACE CORR    -         -3.14  (seconds)                    DEFLEC18
 DR7815
 DR7815  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7815  Standards:
 DR7815         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7815            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7815  -------------------------------------------------------------------
 DR7815  NETWORK    0.81   1.88           0.36   0.30   0.96     -0.04741619
 DR7815  -------------------------------------------------------------------
 DR7815  Click here for local accuracies and other accuracy information.
 DR7815
 DR7815.The horizontal coordinates were established by GPS observations
 DR7815.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7815
 DR7815.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7815.been affixed to the stable North American tectonic plate. See 
 DR7815.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7815
 DR7815.The horizontal coordinates are valid at the epoch date displayed above
 DR7815.which is a decimal equivalence of Year/Month/Day.
 DR7815
 DR7815.The orthometric height was determined by GPS observations and a
 DR7815.high-resolution geoid model using precise GPS observation and
 DR7815.processing techniques.
 DR7815
 DR7815.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7815.GEOID18 height accuracy estimate available here.
 DR7815
 DR7815.Click photographs - Photos may exist for this station.
 DR7815
 DR7815.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7815
 DR7815.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7815
 DR7815.The ellipsoidal height was determined by GPS observations
 DR7815.and is referenced to NAD 83.
 DR7815
 DR7815. The following values were computed from the NAD 83(2011) position.
 DR7815
 DR7815;                    North         East     Units Scale Factor Converg.
 DR7815;SPC MD       -   170,340.181   502,924.611   MT  0.99996534   +0 44 52.2
 DR7815;SPC MD       -   558,857.74  1,650,011.83   sFT  0.99996534   +0 44 52.2
 DR7815;UTM  18      - 4,338,742.424   430,182.643   MT  0.99966002   -0 30 39.5
 DR7815
 DR7815!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7815!SPC MD       -   1.00000215  x   0.99996534  =   0.99996749
 DR7815!UTM  18      -   1.00000215  x   0.99966002  =   0.99966217
 DR7815
 DR7815_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3018238742(NAD 83)
 DR7815
 DR7815                          SUPERSEDED SURVEY CONTROL
 DR7815
 DR7815.No superseded survey control is available for this station.
 DR7815
 DR7815_MARKER: DD = SURVEY DISK
 DR7815_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7815_STAMPING: 30
 DR7815_MARK LOGO: MD-035
 DR7815_PROJECTION: FLUSH
 DR7815_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7815+STABILITY: SURFACE MOTION
 DR7815_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7815+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7815
 DR7815  HISTORY     - Date     Condition        Report By
 DR7815  HISTORY     - UNK      MONUMENTED       MD-035
 DR7815  HISTORY     - 20210309 GOOD             MDSHA
 DR7815
 DR7815                          STATION DESCRIPTION
 DR7815
 DR7815'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7815'THE MARK IS LOCATED ABOUT 4.6 MI (7.4 KM) NORTHEAST OF BARCLAY, 4.6 MI
 DR7815'(7.4 KM) SOUTH-SOUTHEAST OF MILLINGTON AND 2.8 MI (4.5 KM)
 DR7815'EAST-NORTHEAST OF SUDLERSVILLE.
 DR7815'
 DR7815'TO REACH FROM THE JUNCTION OF US 301 AND MD 290, GO SOUTH-SOUTHEAST ON
 DR7815'MD 290 FOR 1.20 MI (1.93 KM) TO AN INTERSECTION.  TURN LEFT AND GO
 DR7815'EAST ON MD 300 FOR 4.60 MI (7.40 KM) TO THE MARK ON THE RIGHT.
 DR7815'
 DR7815'THE MARK IS 102.1 FT (31.1 M) EAST OF THE CENTERLINE OF A GRAVEL
 DR7815'DRIVEWAY FOR PECHIN LANE, 68.6 FT (20.9 M) NORTHEAST OF A UTILITY POLE
 DR7815'WITH NUMBERED 115-30-39, 66.3 FT (20.2 M) NORTH OF A UTILITY POLE WITH
 DR7815'NO NUMBER, 41.5 FT (12.6 M) EAST OF A POWER LINE POLE WITH TRANSFORMER
 DR7815'115-30-395, 32.8 FT (10.0 M) NORTH OF THE CENTERLINE OF STATE ROUTE
 DR7815'300 AND SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7031 ***********************************************************************
 JV7031  DESIGNATION -  30 40 003 RESET
 JV7031  PID         -  JV7031
 JV7031  STATE/COUNTY-  MD/HOWARD
 JV7031  COUNTRY     -  US
 JV7031  USGS QUAD   -  ELLICOTT CITY (2016)
 JV7031
 JV7031                         *CURRENT SURVEY CONTROL
 JV7031  ______________________________________________________________________
 JV7031* NAD 83(2011) POSITION- 39 15 06.99997(N) 076 52 04.32792(W)   ADJUSTED
 JV7031* NAD 83(2011) ELLIP HT-   113.950 (meters)        (06/27/12)   ADJUSTED
 JV7031* NAD 83(2011) EPOCH   -  2010.00
 JV7031* NAVD 88 ORTHO HEIGHT -   146.1   (meters)      479.    (feet) GPS OBS
 JV7031  ______________________________________________________________________
 JV7031  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7031  GEOID HEIGHT    -        -32.110 (meters)                     GEOID99
 JV7031  GEOID HEIGHT    -        -32.128 (meters)                     GEOID18
 JV7031  NAD 83(2011) X  -  1,123,665.426 (meters)                     COMP
 JV7031  NAD 83(2011) Y  - -4,816,427.387 (meters)                     COMP
 JV7031  NAD 83(2011) Z  -  4,014,087.387 (meters)                     COMP
 JV7031  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 JV7031
 JV7031  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7031  Standards:
 JV7031         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7031            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7031  -------------------------------------------------------------------
 JV7031  NETWORK    1.10   1.18           0.48   0.40   0.60     -0.28503527
 JV7031  -------------------------------------------------------------------
 JV7031  Click here for local accuracies and other accuracy information.
 JV7031
 JV7031.The horizontal coordinates were established by GPS observations
 JV7031.and adjusted by the National Geodetic Survey in June 2012.
 JV7031
 JV7031.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7031.been affixed to the stable North American tectonic plate. See 
 JV7031.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7031
 JV7031.The horizontal coordinates are valid at the epoch date displayed above
 JV7031.which is a decimal equivalence of Year/Month/Day.
 JV7031
 JV7031.The orthometric height was determined by GPS observations and a
 JV7031.high-resolution geoid model.
 JV7031
 JV7031.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7031.GEOID18 height accuracy estimate available here.
 JV7031
 JV7031.Click photographs - Photos may exist for this station.
 JV7031
 JV7031.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7031
 JV7031.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7031
 JV7031.The ellipsoidal height was determined by GPS observations
 JV7031.and is referenced to NAD 83.
 JV7031
 JV7031. The following values were computed from the NAD 83(2011) position.
 JV7031
 JV7031;                    North         East     Units Scale Factor Converg.
 JV7031;SPC MD       -   175,983.686   411,405.011   MT  0.99997135   +0 04 58.5
 JV7031;SPC MD       -   577,373.14  1,349,751.27   sFT  0.99997135   +0 04 58.5
 JV7031;UTM  18      - 4,346,398.342   338,827.374   MT  0.99991985   -1 10 55.6
 JV7031
 JV7031!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7031!SPC MD       -   0.99998212  x   0.99997135  =   0.99995347
 JV7031!UTM  18      -   0.99998212  x   0.99991985  =   0.99990197
 JV7031
 JV7031_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3882746398(NAD 83)
 JV7031
 JV7031                          SUPERSEDED SURVEY CONTROL
 JV7031
 JV7031  NAD 83(2007)-  39 15 07.00022(N)    076 52 04.32887(W) AD(2002.00) 0
 JV7031  ELLIP H (02/10/07)  113.977  (m)                       GP(2002.00)    
 JV7031  ELLIP H (08/30/02)  113.978  (m)                       GP(       ) 4 2
 JV7031  NAD 83(1991)-  39 15 06.99987(N)    076 52 04.32850(W) AD(       ) 1
 JV7031  ELLIP H (02/23/93)  113.911  (m)                       GP(       ) 4 2
 JV7031  NGVD 29 (02/23/93)  146.3    (m)  GEOID90  model used  GPS OBS        
 JV7031
 JV7031.Superseded values are not recommended for survey control.
 JV7031
 JV7031.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7031.See file dsdata.pdf to determine how the superseded data were derived.
 JV7031
 JV7031_MARKER: DD = SURVEY DISK
 JV7031_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7031_STAMPING: 3040003 1971 RESET 1976
 JV7031_MARK LOGO: MD-027
 JV7031_PROJECTION: RECESSED 30 CENTIMETERS
 JV7031_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7031_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7031+STABILITY: SURFACE MOTION
 JV7031_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7031+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7031
 JV7031  HISTORY     - Date     Condition        Report By
 JV7031  HISTORY     - 1976     MONUMENTED       MD-027
 JV7031  HISTORY     - 19901125 GOOD             MD-027
 JV7031  HISTORY     - 19910117 GOOD
 JV7031  HISTORY     - 20000915 GOOD             MD-027
 JV7031
 JV7031                          STATION DESCRIPTION
 JV7031
 JV7031'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7031'THE STATION IS LOCATED ABOUT 8.3 KM (5.15 MI) NORTHEAST OF CLARKSVILLE
 JV7031'AND 8.6 KM (5.35 MI) SOUTH OF WOODSTOCK. OWNERSHIP HOWARD COUNTY
 JV7031'BOARD OF EDUCATION.
 JV7031'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 29 AND
 JV7031'STATE HIGHWAY 108 LOCATED ABOUT 4.3 KM (2.65 MI) SOUTHWEST OF THE
 JV7031'TOWN OF ELLICOTT CITY. GO 2.4 KM (1.50 MI) WEST ON STATE HIGHWAY 108
 JV7031'TO CENTENNIAL LANE, TURN RIGHT AND GO 1.9 KM (1.20 MI) NORTH ON
 JV7031'CENTENNIAL LANE TO THE STATION ON THE LEFT. THE STATION IN FRONT OF
 JV7031'THE SOUTH EAST CORNER OF CENTENNIAL HIGH SCHOOL.
 JV7031'THE STATION LIES 30.4 M (99.7 FT) SOUTHEAST FROM A X-CUT ON A CONCRETE
 JV7031'PAD WITH A METAL ELECTRICAL BOX, 97.6 M (320.2 FT) SOUTHEAST FROM AN
 JV7031'X-CUT IN THE SOUTHEAST END OF A CONCRETE SIDEWALK AND 0.3 M (1.0 FT)
 JV7031'SOUTH FROM A HOWARD COUNTY WITNESS POST.
 JV7031'THE STATION IS A STANDARD HOWARD COUNTY SURVEY DISC, SET ON TOP OF A
 JV7031'ROUND CONCRETE MONUMENT RECESSED 3 CM FROM THE GROUND, IT IS STAMPED
 JV7031'3430003 1971.
 JV7031'COMMENT--NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV7031'INCLUDED IN THIS GPS SURVEY PROJECT.
 JV7031
 JV7031                          STATION RECOVERY (1991)
 JV7031
 JV7031'RECOVERED 1991
 JV7031'RECOVERED IN GOOD CONDITION.
 JV7031
 JV7031                          STATION RECOVERY (2000)
 JV7031
 JV7031'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7031'RECOVERY BY HOWARD COUNTY 2000 FOUND AS DESCRIBED IN GOOD
 JV7031'CONDITION.SPECIAL  NOTE  DIFFICULT TO USE ON RAINY DAYS BECAUSE
 JV7031'WATER   FILLS  DEPRESION.
 JV7031'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1540 ***********************************************************************
 JV1540  DESIGNATION -  30 PRR
 JV1540  PID         -  JV1540
 JV1540  STATE/COUNTY-  MD/BALTIMORE
 JV1540  COUNTRY     -  US
 JV1540  USGS QUAD   -  NEW FREEDOM (2019)
 JV1540
 JV1540                         *CURRENT SURVEY CONTROL
 JV1540  ______________________________________________________________________
 JV1540* NAD 83(1986) POSITION- 39 38 09.     (N) 076 39 03.     (W)   SCALED
 JV1540* NAVD 88 ORTHO HEIGHT -   119.815 (meters)      393.09  (feet) ADJUSTED
 JV1540  ______________________________________________________________________
 JV1540  GEOID HEIGHT    -        -32.299 (meters)                     GEOID18
 JV1540  DYNAMIC HEIGHT  -        119.756 (meters)      392.90  (feet) COMP
 JV1540  MODELED GRAVITY -    980,130.6   (mgal)                       NAVD 88
 JV1540
 JV1540  VERT ORDER      -  SECOND    CLASS 0
 JV1540
 JV1540.The horizontal coordinates were scaled from a map and have
 JV1540.an estimated accuracy of +/- 6 seconds.
 JV1540
 JV1540.The orthometric height was determined by differential leveling and
 JV1540.adjusted by the NATIONAL GEODETIC SURVEY
 JV1540.in June 1991.
 JV1540
 JV1540.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1540.GEOID18 height accuracy estimate available here.
 JV1540
 JV1540.Click photographs - Photos may exist for this station.
 JV1540
 JV1540.The dynamic height is computed by dividing the NAVD 88
 JV1540.geopotential number by the normal gravity value computed on the
 JV1540.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1540.degrees latitude (g = 980.6199 gals.).
 JV1540
 JV1540.The modeled gravity was interpolated from observed gravity values.
 JV1540
 JV1540;                    North         East    Units  Estimated Accuracy
 JV1540;SPC MD       -   218,650.      429,980.      MT  (+/- 180 meters Scaled)
 JV1540
 JV1540_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ583886(NAD 83)
 JV1540
 JV1540                          SUPERSEDED SURVEY CONTROL
 JV1540
 JV1540  NGVD 29 (11/26/84)  120.040  (m)          393.83   (f) ADJUSTED    2 0
 JV1540
 JV1540.Superseded values are not recommended for survey control.
 JV1540
 JV1540.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1540.See file dsdata.pdf to determine how the superseded data were derived.
 JV1540
 JV1540_MARKER: B = BOLT
 JV1540_SETTING: 66 = SET IN ROCK OUTCROP
 JV1540_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV1540+STABILITY: POSITION/ELEVATION WELL
 JV1540
 JV1540  HISTORY     - Date     Condition        Report By
 JV1540  HISTORY     - UNK      MONUMENTED       PRR
 JV1540  HISTORY     - 1942     GOOD             CGS
 JV1540
 JV1540                          STATION DESCRIPTION
 JV1540
 JV1540'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1540'0.9 MI N FROM GRAYSTONE.
 JV1540'0.9 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV1540'AT GRAYSTONE, BALTIMORE COUNTY, 0.7 MILE SOUTH OF PARKTON, 200
 JV1540'FEET NORTH OF MILEPOST 28, IN THE TOP OF A ROCK OUTCROP, 7
 JV1540'FEET NORTHEAST OF A 6-INCH OAK TREE, AND 47 FEET EAST OF THE
 JV1540'CENTERLINE OF THE EAST TRACK.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0027 ***********************************************************************
 JV0027  DESIGNATION -  30 USGS
 JV0027  PID         -  JV0027
 JV0027  STATE/COUNTY-  MD/CECIL
 JV0027  COUNTRY     -  US
 JV0027  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0027
 JV0027                         *CURRENT SURVEY CONTROL
 JV0027  ______________________________________________________________________
 JV0027* NAD 83(1986) POSITION- 39 34 49.     (N) 076 05 15.     (W)   SCALED
 JV0027* NAVD 88 ORTHO HEIGHT -     8.734 (meters)       28.65  (feet) ADJUSTED
 JV0027  ______________________________________________________________________
 JV0027  GEOID HEIGHT    -        -33.091 (meters)                     GEOID18
 JV0027  DYNAMIC HEIGHT  -          8.730 (meters)       28.64  (feet) COMP
 JV0027  MODELED GRAVITY -    980,128.5   (mgal)                       NAVD 88
 JV0027
 JV0027  VERT ORDER      -  FIRST     CLASS II
 JV0027
 JV0027.The horizontal coordinates were scaled from a map and have
 JV0027.an estimated accuracy of +/- 6 seconds.
 JV0027
 JV0027.The orthometric height was determined by differential leveling and
 JV0027.adjusted by the NATIONAL GEODETIC SURVEY
 JV0027.in June 1991.
 JV0027
 JV0027.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0027.GEOID18 height accuracy estimate available here.
 JV0027
 JV0027.Click photographs - Photos may exist for this station.
 JV0027
 JV0027.The dynamic height is computed by dividing the NAVD 88
 JV0027.geopotential number by the normal gravity value computed on the
 JV0027.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0027.degrees latitude (g = 980.6199 gals.).
 JV0027
 JV0027.The modeled gravity was interpolated from observed gravity values.
 JV0027
 JV0027;                    North         East    Units  Estimated Accuracy
 JV0027;SPC MD       -   212,820.      478,400.      MT  (+/- 180 meters Scaled)
 JV0027
 JV0027_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ066817(NAD 83)
 JV0027
 JV0027                          SUPERSEDED SURVEY CONTROL
 JV0027
 JV0027  NGVD 29 (11/26/84)    8.994  (m)           29.51   (f) ADJUSTED    1 2
 JV0027
 JV0027.Superseded values are not recommended for survey control.
 JV0027
 JV0027.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0027.See file dsdata.pdf to determine how the superseded data were derived.
 JV0027
 JV0027_MARKER: Q = CHISELED SQUARE
 JV0027_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0027_SP_SET: CULVERT
 JV0027_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0027
 JV0027  HISTORY     - Date     Condition        Report By
 JV0027  HISTORY     - UNK      MONUMENTED       USGS
 JV0027  HISTORY     - 1955     GOOD             CGS
 JV0027  HISTORY     - 19901116 GOOD             USPSQD
 JV0027
 JV0027                          STATION DESCRIPTION
 JV0027
 JV0027'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0027'1.8 MI N FROM PERRYVLLE.
 JV0027'ABOUT 1.75 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV0027'STATION AT PERRYVILLE, ABOUT 0.2 MILE NORTH OF MILE POST 2, IN
 JV0027'THE TOP AND 1 FOOT SOUTHEAST OF NORTHWEST END OF THE SOUTHWEST
 JV0027'CONCRETE HEAD WALL OF AN 8-FOOT STONE MASONRY CULVERT, 10 FEET
 JV0027'SOUTHWEST OF SOUTHWEST RAIL OF SOUTHWEST TRACK AND ABOUT 2 FEET
 JV0027'BELOW LEVEL OF TRACK.
 JV0027
 JV0027                          STATION RECOVERY (1990)
 JV0027
 JV0027'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0027'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0232 ***********************************************************************
 HU0232  DESIGNATION -  30.02
 HU0232  PID         -  HU0232
 HU0232  STATE/COUNTY-  MD/WORCESTER
 HU0232  COUNTRY     -  US
 HU0232  USGS QUAD   -  SNOW HILL (2016)
 HU0232
 HU0232                         *CURRENT SURVEY CONTROL
 HU0232  ______________________________________________________________________
 HU0232* NAD 83(1986) POSITION- 38 07 31.     (N) 075 23 47.     (W)   SCALED
 HU0232* NAVD 88 ORTHO HEIGHT -     8.616 (meters)       28.27  (feet) ADJUSTED
 HU0232  ______________________________________________________________________
 HU0232  GEOID HEIGHT    -        -36.277 (meters)                     GEOID18
 HU0232  DYNAMIC HEIGHT  -          8.610 (meters)       28.25  (feet) COMP
 HU0232  MODELED GRAVITY -    979,978.7   (mgal)                       NAVD 88
 HU0232
 HU0232  VERT ORDER      -  SECOND    CLASS I
 HU0232
 HU0232.The horizontal coordinates were scaled from a map and have
 HU0232.an estimated accuracy of +/- 6 seconds.
 HU0232
 HU0232.The orthometric height was determined by differential leveling and
 HU0232.adjusted by the NATIONAL GEODETIC SURVEY
 HU0232.in June 1991.
 HU0232
 HU0232.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0232.GEOID18 height accuracy estimate available here.
 HU0232
 HU0232.Click photographs - Photos may exist for this station.
 HU0232
 HU0232.The dynamic height is computed by dividing the NAVD 88
 HU0232.geopotential number by the normal gravity value computed on the
 HU0232.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0232.degrees latitude (g = 980.6199 gals.).
 HU0232
 HU0232.The modeled gravity was interpolated from observed gravity values.
 HU0232
 HU0232;                    North         East    Units  Estimated Accuracy
 HU0232;SPC MD       -    52,140.      540,610.      MT  (+/- 180 meters Scaled)
 HU0232
 HU0232_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH652197(NAD 83)
 HU0232
 HU0232                          SUPERSEDED SURVEY CONTROL
 HU0232
 HU0232  NGVD 29 (11/26/84)    8.859  (m)           29.06   (f) ADJUSTED    2 0
 HU0232
 HU0232.Superseded values are not recommended for survey control.
 HU0232
 HU0232.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0232.See file dsdata.pdf to determine how the superseded data were derived.
 HU0232
 HU0232_MARKER: B = BOLT
 HU0232_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU0232_SP_SET: CULVERT
 HU0232_MARK LOGO: NONE
 HU0232_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0232_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0232+STABILITY: SURFACE MOTION
 HU0232_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0232+SATELLITE: SATELLITE OBSERVATIONS - January 20, 2004
 HU0232
 HU0232  HISTORY     - Date     Condition        Report By
 HU0232  HISTORY     - UNK      MONUMENTED       PRR
 HU0232  HISTORY     - 1962     GOOD             CGS
 HU0232  HISTORY     - 20010503 GOOD             MDSHA
 HU0232  HISTORY     - 20040120 GOOD             MDSHA
 HU0232
 HU0232                          STATION DESCRIPTION
 HU0232
 HU0232'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0232'3.4 MI S FROM SNOW HILL.
 HU0232'3.4 MILES SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HU0232'AT SNOW HILL, WORCESTER COUNTY, 0.1 MILE SOUTH OF MILEPOST 45, AT
 HU0232'THE 6-FOOT CONCRETE ARCH CULVERT 45.15, IN THE TOP OF THE NORTH
 HU0232'END OF THE EAST COPING, 15 FEET EAST OF THE CENTERLINE OF THE
 HU0232'TRACK AND 2 FEET LOWER THAN THE TRACK.  A COPPER BOLT PROJECTING
 HU0232'ABOUT 2 INCHES ABOVE THE GROUND.  NOVEMBER 1962 REPORT-- THE
 HU0232'TRACKS HAVE BEEN REMOVED.
 HU0232
 HU0232                          STATION RECOVERY (2001)
 HU0232
 HU0232'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU0232'RECOVERED AS DESCRIBED.
 HU0232
 HU0232                          STATION RECOVERY (2004)
 HU0232
 HU0232'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (SFK)
 HU0232'THE STATION IS LOCATED ABOUT 3.4 MI (5.47 KM) SOUTH OF SNOW HILL, AND
 HU0232'1.5 MI (2.41 KM) NORTH OF GIRDLETREE. TO REACH THE STATION FROM THE
 HU0232'POST OFFICE IN GIRDLETREE, GO NORTH ALONG STATE HIGHWAY 12 FOR 1.65 MI
 HU0232'(2.66 KM) TO A DIRT DRIVEWAY LEADING WEST TO HOUSE NUMBER 3507.  TURN
 HU0232'LEFT AND GO WEST ALONG DIRT DIVEWAY FOR 0.5 MI (0.8 KM) TO A DIRT ROAD
 HU0232'LEADING NORTH.  TURN RIGHT AND GO NORTH FOR O.3 MI (0.0 KM) TO THE
 HU0232'STATION ON THE RIGHT. THE STATION IS A COPPER BOLT SET IN THE TOP OF
 HU0232'THE NORTH END OF THE EAST COPING OF A 6 FOOT CONCRETE ARCHED CULVERT.
 HU0232'IT IS ABOUT 2 FT (0.6 M) LOWER THAN THE OLD RIALROAD BED AND PROJECTS
 HU0232'ABOUT 2 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1086 ***********************************************************************
 HV1086  DESIGNATION -  3008 WSSC
 HV1086  PID         -  HV1086
 HV1086  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1086  COUNTRY     -  US
 HV1086  USGS QUAD   -  PISCATAWAY (2016)
 HV1086
 HV1086                         *CURRENT SURVEY CONTROL
 HV1086  ______________________________________________________________________
 HV1086* NAD 83(1986) POSITION- 38 43 17.     (N) 076 59 00.     (W)   SCALED
 HV1086* NAVD 88 ORTHO HEIGHT -    51.730 (meters)      169.72  (feet) ADJUSTED
 HV1086  ______________________________________________________________________
 HV1086  GEOID HEIGHT    -        -32.487 (meters)                     GEOID18
 HV1086  DYNAMIC HEIGHT  -         51.702 (meters)      169.63  (feet) COMP
 HV1086  MODELED GRAVITY -    980,075.7   (mgal)                       NAVD 88
 HV1086
 HV1086  VERT ORDER      -  SECOND    CLASS 0
 HV1086
 HV1086.The horizontal coordinates were scaled from a map and have
 HV1086.an estimated accuracy of +/- 6 seconds.
 HV1086
 HV1086.The orthometric height was determined by differential leveling and
 HV1086.adjusted by the NATIONAL GEODETIC SURVEY
 HV1086.in June 1991.
 HV1086
 HV1086.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1086.GEOID18 height accuracy estimate available here.
 HV1086
 HV1086.Click photographs - Photos may exist for this station.
 HV1086
 HV1086.The dynamic height is computed by dividing the NAVD 88
 HV1086.geopotential number by the normal gravity value computed on the
 HV1086.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1086.degrees latitude (g = 980.6199 gals.).
 HV1086
 HV1086.The modeled gravity was interpolated from observed gravity values.
 HV1086
 HV1086;                    North         East    Units  Estimated Accuracy
 HV1086;SPC MD       -   117,080.      401,450.      MT  (+/- 180 meters Scaled)
 HV1086
 HV1086_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH275877(NAD 83)
 HV1086
 HV1086                          SUPERSEDED SURVEY CONTROL
 HV1086
 HV1086  NGVD 29 (05/01/89)   51.968  (m)          170.50   (f) ADJUSTED    2 0
 HV1086  NGVD 29 (??/??/87)   51.997  (m)          170.59   (f) SUPERSEDED  2 0
 HV1086
 HV1086.Superseded values are not recommended for survey control.
 HV1086
 HV1086.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1086.See file dsdata.pdf to determine how the superseded data were derived.
 HV1086
 HV1086_MARKER: B = BOLT
 HV1086_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1086_SP_SET: CULVERT
 HV1086_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1086
 HV1086  HISTORY     - Date     Condition        Report By
 HV1086  HISTORY     - UNK      MONUMENTED       WSSC
 HV1086  HISTORY     - 1966     GOOD             CGS
 HV1086
 HV1086                          STATION DESCRIPTION
 HV1086
 HV1086'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 HV1086'AT CHAPEL HILL.
 HV1086'AT CHAPEL HILL, 1200 FEET NORTHWEST OF THE JUNCTION OF OLD
 HV1086'FORT ROAD, SET IN THE TOP OF THE SOUTHWEST (RIGHT ANGLE SHAPED)
 HV1086'CONCRETE HEADWALL OF CULVERT UNDER LIVINGSTON ROAD, LOCATED
 HV1086'NEAR THE ANGLE OF THE HEADWALL, ON THE SOUTHWEST SIDE OF
 HV1086'LIVINGSTON ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6581 ***********************************************************************
 DL6581  DESIGNATION -  3043003
 DL6581  PID         -  DL6581
 DL6581  STATE/COUNTY-  MD/HOWARD
 DL6581  COUNTRY     -  US
 DL6581  USGS QUAD   -  ELLICOTT CITY (2016)
 DL6581
 DL6581                         *CURRENT SURVEY CONTROL
 DL6581  ______________________________________________________________________
 DL6581* NAD 83(1986) POSITION- 39 15 39.12   (N) 076 48 50.72   (W)   HD_HELD1
 DL6581* NAVD 88 ORTHO HEIGHT -   123.048 (meters)      403.70  (feet) ADJUSTED
 DL6581  ______________________________________________________________________
 DL6581  GEOID HEIGHT    -        -32.213 (meters)                     GEOID18
 DL6581  DYNAMIC HEIGHT  -        122.983 (meters)      403.49  (feet) COMP
 DL6581  MODELED GRAVITY -    980,093.2   (mgal)                       NAVD 88
 DL6581
 DL6581  VERT ORDER      -  SECOND    CLASS I
 DL6581
 DL6581.The horizontal coordinates were determined by differentially corrected
 DL6581.hand held GPS observations or other comparable positioning techniques
 DL6581.and have an estimated accuracy of +/- 3 meters.
 DL6581
 DL6581.The orthometric height was determined by differential leveling and
 DL6581.adjusted by the NATIONAL GEODETIC SURVEY
 DL6581.in March 2010.
 DL6581
 DL6581.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6581.GEOID18 height accuracy estimate available here.
 DL6581
 DL6581.Click photographs - Photos may exist for this station.
 DL6581
 DL6581.The dynamic height is computed by dividing the NAVD 88
 DL6581.geopotential number by the normal gravity value computed on the
 DL6581.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6581.degrees latitude (g = 980.6199 gals.).
 DL6581
 DL6581.The modeled gravity was interpolated from observed gravity values.
 DL6581
 DL6581;                    North         East    Units  Estimated Accuracy
 DL6581;SPC MD       -   176,982.3     416,045.1     MT  (+/- 3 meters HH1 GPS) 
 DL6581
 DL6581_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4348847294(NAD 83)
 DL6581
 DL6581                          SUPERSEDED SURVEY CONTROL
 DL6581
 DL6581.No superseded survey control is available for this station.
 DL6581
 DL6581_MARKER: DD = SURVEY DISK
 DL6581_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6581_STAMPING: AUGUST 13 1987 3043003
 DL6581_MARK LOGO: MD-027
 DL6581_PROJECTION: FLUSH
 DL6581_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6581_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6581+STABILITY: SURFACE MOTION
 DL6581_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6581+SATELLITE: SATELLITE OBSERVATIONS - May 24, 2007
 DL6581
 DL6581  HISTORY     - Date     Condition        Report By
 DL6581  HISTORY     - 19870813 MONUMENTED       MD-027
 DL6581  HISTORY     - 20070524 GOOD             MDSHA
 DL6581
 DL6581                          STATION DESCRIPTION
 DL6581
 DL6581'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6581'THE STATION IS LOCATED ABOUT 2.8 MI (4.5 KM) EAST-SOUTHEAST OF PINE
 DL6581'ORCHARD, 2.7 MI (4.3 KM) NORTH OF JONESTOWN AND 1.0 MI (1.6 KM)
 DL6581'WEST-SOUTHWEST OF ELLICOTT CITY.
 DL6581'
 DL6581'TO REACH FROM THE ELLICOTT CITY ARMORY, GO NORTHWEST ON STATE HIGHWAY
 DL6581'103 FOR 0.1 MI (0.2 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND
 DL6581'GO NORTHEAST ON OLD COLUMBIA PIKE FOR 0.4 MI (0.6 KM) TO A SIDE ROAD
 DL6581'ON THE LEFT.  TURN LEFT AND GO NORTH ON COOKS LANE FOR 0.05 MI (0.1
 DL6581'KM) TO THE TOP OF A HILL AND THE STATION ON THE RIGHT.
 DL6581'
 DL6581'IT IS 161 FT (49.1 M) NORTHEAST OF A FIRE HYDRANT, 159 NORTH OF A
 DL6581'POWER POLE NUMBER 501934, 127 FT (38.7 M) NORTHEAST OF THE CENTER OF A
 DL6581'SEWER MANHOLE COVER, 95.4 FT (29.1 M) SOUTHEAST OF THE NORTHEAST END
 DL6581'OF A POST AND RAIL FENCE LOCATED UNDER A POWER TRANSMISSION LINE AND
 DL6581'SET IN THE TOP OF A 10 INCH (25 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0816 ***********************************************************************
 HV0816  DESIGNATION -  3084 WSSC
 HV0816  PID         -  HV0816
 HV0816  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0816  COUNTRY     -  US
 HV0816  USGS QUAD   -  BRANDYWINE (2016)
 HV0816
 HV0816                         *CURRENT SURVEY CONTROL
 HV0816  ______________________________________________________________________
 HV0816* NAD 83(1986) POSITION- 38 44 44.     (N) 076 49 00.     (W)   SCALED
 HV0816* NAVD 88 ORTHO HEIGHT -    69.626 (meters)      228.43  (feet) ADJUSTED
 HV0816  ______________________________________________________________________
 HV0816  GEOID HEIGHT    -        -32.869 (meters)                     GEOID18
 HV0816  DYNAMIC HEIGHT  -         69.586 (meters)      228.30  (feet) COMP
 HV0816  MODELED GRAVITY -    980,055.9   (mgal)                       NAVD 88
 HV0816
 HV0816  VERT ORDER      -  FIRST     CLASS II
 HV0816
 HV0816.The horizontal coordinates were scaled from a map and have
 HV0816.an estimated accuracy of +/- 6 seconds.
 HV0816
 HV0816.The orthometric height was determined by differential leveling and
 HV0816.adjusted by the NATIONAL GEODETIC SURVEY
 HV0816.in June 1991.
 HV0816
 HV0816.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0816.GEOID18 height accuracy estimate available here.
 HV0816
 HV0816.Click photographs - Photos may exist for this station.
 HV0816
 HV0816.The dynamic height is computed by dividing the NAVD 88
 HV0816.geopotential number by the normal gravity value computed on the
 HV0816.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0816.degrees latitude (g = 980.6199 gals.).
 HV0816
 HV0816.The modeled gravity was interpolated from observed gravity values.
 HV0816
 HV0816;                    North         East    Units  Estimated Accuracy
 HV0816;SPC MD       -   119,780.      415,940.      MT  (+/- 180 meters Scaled)
 HV0816
 HV0816_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH421901(NAD 83)
 HV0816
 HV0816                          SUPERSEDED SURVEY CONTROL
 HV0816
 HV0816  NGVD 29 (11/26/84)   69.858  (m)          229.19   (f) ADJUSTED    1 2
 HV0816
 HV0816.Superseded values are not recommended for survey control.
 HV0816
 HV0816.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0816.See file dsdata.pdf to determine how the superseded data were derived.
 HV0816
 HV0816_MARKER: R = RIVET
 HV0816_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0816_SP_SET: CULVERT
 HV0816_STAMPING: WSSC BM NO 3084
 HV0816_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0816_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0816
 HV0816  HISTORY     - Date     Condition        Report By
 HV0816  HISTORY     - UNK      MONUMENTED       WSSC
 HV0816  HISTORY     - 1971     GOOD             NGS
 HV0816  HISTORY     - 19990203 GOOD             GEOMET
 HV0816
 HV0816                          STATION DESCRIPTION
 HV0816
 HV0816'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0816'0.8 MI SW FROM ROSARYVILLE.
 HV0816'ABOUT 0.8 MILE SOUTHWEST ALONG U.S. HIGHWAY 301 FROM THE
 HV0816'INTERSECTION OF ROSARYVILLE ROAD AND OLD INDIAN HEAD ROAD AT
 HV0816'ROSARYVILLE, AT THE NORTH END OF HEAD WALL FOR CULVERT AT
 HV0816'CROSSOVER BETWEEN THE LANES OF THE U.S. HIGHWAY, 47 FEET
 HV0816'NORTHEAST OF THE CENTER LINE OF THE CROSSOVER, 43 FEET NORTHWEST
 HV0816'OF THE CENTER LINE OF THE NORTHBOUND LANE OF THE HIGHWAY, 4.2
 HV0816'FEET SOUTHEAST OF THE NORTHWEST END OF THE HEADWALL, 3.7 FEET
 HV0816'NORTHWEST OF THE SOUTHEAST END OF THE HEADWALL AND 3 FEET BELOW
 HV0816'THE LEVEL OF THE CROSSOVER.
 HV0816
 HV0816                          STATION RECOVERY (1999)
 HV0816
 HV0816'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (DR)
 HV0816'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6578 ***********************************************************************
 DL6578  DESIGNATION -  30BA
 DL6578  PID         -  DL6578
 DL6578  STATE/COUNTY-  MD/HOWARD
 DL6578  COUNTRY     -  US
 DL6578  USGS QUAD   -  SAVAGE (2016)
 DL6578
 DL6578                         *CURRENT SURVEY CONTROL
 DL6578  ______________________________________________________________________
 DL6578* NAD 83(1986) POSITION- 39 14 25.13   (N) 076 50 31.21   (W)   HD_HELD1
 DL6578* NAVD 88 ORTHO HEIGHT -   121.062 (meters)      397.18  (feet) ADJUSTED
 DL6578  ______________________________________________________________________
 DL6578  GEOID HEIGHT    -        -32.184 (meters)                     GEOID18
 DL6578  DYNAMIC HEIGHT  -        120.997 (meters)      396.97  (feet) COMP
 DL6578  MODELED GRAVITY -    980,091.0   (mgal)                       NAVD 88
 DL6578
 DL6578  VERT ORDER      -  SECOND    CLASS I
 DL6578
 DL6578.The horizontal coordinates were determined by differentially corrected
 DL6578.hand held GPS observations or other comparable positioning techniques
 DL6578.and have an estimated accuracy of +/- 3 meters.
 DL6578
 DL6578.The orthometric height was determined by differential leveling and
 DL6578.adjusted by the NATIONAL GEODETIC SURVEY
 DL6578.in March 2010.
 DL6578
 DL6578.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6578.GEOID18 height accuracy estimate available here.
 DL6578
 DL6578.Click photographs - Photos may exist for this station.
 DL6578
 DL6578.The dynamic height is computed by dividing the NAVD 88
 DL6578.geopotential number by the normal gravity value computed on the
 DL6578.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6578.degrees latitude (g = 980.6199 gals.).
 DL6578
 DL6578.The modeled gravity was interpolated from observed gravity values.
 DL6578
 DL6578;                    North         East    Units  Estimated Accuracy
 DL6578;SPC MD       -   174,696.0     413,639.9     MT  (+/- 3 meters HH1 GPS) 
 DL6578
 DL6578_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4103345061(NAD 83)
 DL6578
 DL6578                          SUPERSEDED SURVEY CONTROL
 DL6578
 DL6578.No superseded survey control is available for this station.
 DL6578
 DL6578_MARKER: DD = SURVEY DISK
 DL6578_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6578_STAMPING: 4/92 30BA
 DL6578_MARK LOGO: MD-027
 DL6578_PROJECTION: RECESSED 3 CENTIMETERS
 DL6578_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6578+STABILITY: SURFACE MOTION
 DL6578_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6578+SATELLITE: SATELLITE OBSERVATIONS - May 24, 2007
 DL6578
 DL6578  HISTORY     - Date     Condition        Report By
 DL6578  HISTORY     - 199204   MONUMENTED       MD-027
 DL6578  HISTORY     - 20070524 GOOD             MDSHA
 DL6578
 DL6578                          STATION DESCRIPTION
 DL6578
 DL6578'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6578'THE STATION IS LOCATED ABOUT 2.8 MI (4.5 KM) SOUTH-SOUTHEAST OF PINE
 DL6578'ORCHARD, 2.2 MI (3.5 KM) NORTHWEST OF JONESTOWN AND 2.2 MI (3.5 KM)
 DL6578'NORTH-NORTHEAST OF COLUMBIA.
 DL6578'
 DL6578'TO REACH FROM THE HOWARD COUNTY HIGH SCHOOL, GO NORTHWEST ALONG STATE
 DL6578'HIGHWAY 108 FOR 1.7 MI (2.7 KM) TO THE HIGHWAY BRIDGE OVER U.S.
 DL6578'HIGHWAY 29.  CONTINUE WEST ALONG STATE HIGHWAY 108 FOR 0.4 MI (0.6 KM)
 DL6578'TO AN INTERSECTION.  TURN RIGHT AND GO NORTH ON COLUMBIA ROAD FOR 0.2
 DL6578'MI (0.3 KM) TO AN INTERSECTION.  TURN RIGHT AND GO SOUTHEAST ON OLD
 DL6578'ANNAPOLIS ROAD FOR 0.2 MI (0.3 KM) TO A ROAD ON THE RIGHT.  TURN RIGHT
 DL6578'AND GO SOUTH ON OLD ROUTE 108 FOR 0.1 MI (0.2 KM) TO THE STATION ON
 DL6578'THE LEFT.
 DL6578'
 DL6578'IT IS 18.5 FT (5.6 M) EAST OF THE CENTERLINE OF OLD ROUTE 108, 38.0 FT
 DL6578'(11.6 M) SOUTHWEST OF C AND P POLE NUMBER 11, 53.0 FT (16.2 M) NORTH
 DL6578'OF THE NORTH EDGE OF THE SHOULDER FOR WESTBOUND ROUTE 108, 3.0 FT (0.9
 DL6578'M) EAST OF A FIBERGLASS WITNESS POST AND SET IN THE TOP OF A 10 INCH
 DL6578'(25 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6576 ***********************************************************************
 DL6576  DESIGNATION -  30FA
 DL6576  PID         -  DL6576
 DL6576  STATE/COUNTY-  MD/HOWARD
 DL6576  COUNTRY     -  US
 DL6576  USGS QUAD   -  SAVAGE (2016)
 DL6576
 DL6576                         *CURRENT SURVEY CONTROL
 DL6576  ______________________________________________________________________
 DL6576* NAD 83(1986) POSITION- 39 13 40.30   (N) 076 49 34.37   (W)   HD_HELD1
 DL6576* NAVD 88 ORTHO HEIGHT -   134.397 (meters)      440.93  (feet) ADJUSTED
 DL6576  ______________________________________________________________________
 DL6576  GEOID HEIGHT    -        -32.218 (meters)                     GEOID18
 DL6576  DYNAMIC HEIGHT  -        134.325 (meters)      440.70  (feet) COMP
 DL6576  MODELED GRAVITY -    980,088.7   (mgal)                       NAVD 88
 DL6576
 DL6576  VERT ORDER      -  SECOND    CLASS I
 DL6576
 DL6576.The horizontal coordinates were determined by differentially corrected
 DL6576.hand held GPS observations or other comparable positioning techniques
 DL6576.and have an estimated accuracy of +/- 3 meters.
 DL6576
 DL6576.The orthometric height was determined by differential leveling and
 DL6576.adjusted by the NATIONAL GEODETIC SURVEY
 DL6576.in March 2010.
 DL6576
 DL6576.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6576.GEOID18 height accuracy estimate available here.
 DL6576
 DL6576.Click photographs - Photos may exist for this station.
 DL6576
 DL6576.The dynamic height is computed by dividing the NAVD 88
 DL6576.geopotential number by the normal gravity value computed on the
 DL6576.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6576.degrees latitude (g = 980.6199 gals.).
 DL6576
 DL6576.The modeled gravity was interpolated from observed gravity values.
 DL6576
 DL6576;                    North         East    Units  Estimated Accuracy
 DL6576;SPC MD       -   173,316.1     415,005.6     MT  (+/- 3 meters HH1 GPS) 
 DL6576
 DL6576_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4236743652(NAD 83)
 DL6576
 DL6576                          SUPERSEDED SURVEY CONTROL
 DL6576
 DL6576.No superseded survey control is available for this station.
 DL6576
 DL6576_MARKER: DD = SURVEY DISK
 DL6576_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6576_STAMPING: 4/92 30FA
 DL6576_MARK LOGO: MD-027
 DL6576_PROJECTION: RECESSED 5 CENTIMETERS
 DL6576_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6576+STABILITY: SURFACE MOTION
 DL6576_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6576+SATELLITE: SATELLITE OBSERVATIONS - May 25, 2007
 DL6576
 DL6576  HISTORY     - Date     Condition        Report By
 DL6576  HISTORY     - 199204   MONUMENTED       MD-027
 DL6576  HISTORY     - 20070525 GOOD             MDSHA
 DL6576
 DL6576                          STATION DESCRIPTION
 DL6576
 DL6576'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6576'THE MARK IS LOCATED ABOUT 3.1 MI (5.0 KM) SOUTH-SOUTHWEST OF ELLICOTT
 DL6576'CITY, 2.0 MI (3.2 KM) NORTHEAST OF COLUMBIA AND 1.1 MI (1.8 KM)
 DL6576'WEST-NORTHWEST OF JONESTOWN.
 DL6576'
 DL6576'TO REACH THE MARK FROM THE STATE HIGHWAY 108 BRIDGE OVER U.S.HIGHWAY
 DL6576'29, GO SOUTHEAST ON STATE HIGHWAY 108 FOR 1.15 MI (1.9 KM) TO SUMMER
 DL6576'HOLLOW LANE AND THE MARK ON THE RIGHT.
 DL6576'
 DL6576'IT IS 4.5 FT (1.4 M) SOUTH OF THE FACE OF THE SOUTH CONCRETE CURB FOR
 DL6576'THE HIGHWAY, 42.6 FT (13.0 M) WEST OF THE END OF THE CONCRETE CURB,
 DL6576'26.0 FT (7.9 M) EAST OF A 3 INCH (8 CM) METAL PIPELINE WARNING MARKER,
 DL6576'114.0 FT (34.7 M) SOUTHEAST OF THE CENTERLINE OF SUMMER HOLLOW LANE
 DL6576'AND SET IN A 6-IN (15 CM) ROUND CONCRETE POST ABOUT 1 FT (0.3 M)
 DL6576'HIGHER THAN THE SURFACE OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6575 ***********************************************************************
 DL6575  DESIGNATION -  30IA
 DL6575  PID         -  DL6575
 DL6575  STATE/COUNTY-  MD/HOWARD
 DL6575  COUNTRY     -  US
 DL6575  USGS QUAD   -  SAVAGE (2016)
 DL6575
 DL6575                         *CURRENT SURVEY CONTROL
 DL6575  ______________________________________________________________________
 DL6575* NAD 83(1986) POSITION- 39 13 31.64   (N) 076 48 52.73   (W)   HD_HELD1
 DL6575* NAVD 88 ORTHO HEIGHT -   152.137 (meters)      499.14  (feet) ADJUSTED
 DL6575  ______________________________________________________________________
 DL6575  GEOID HEIGHT    -        -32.241 (meters)                     GEOID18
 DL6575  DYNAMIC HEIGHT  -        152.055 (meters)      498.87  (feet) COMP
 DL6575  MODELED GRAVITY -    980,087.3   (mgal)                       NAVD 88
 DL6575
 DL6575  VERT ORDER      -  SECOND    CLASS I
 DL6575
 DL6575.The horizontal coordinates were determined by differentially corrected
 DL6575.hand held GPS observations or other comparable positioning techniques
 DL6575.and have an estimated accuracy of +/- 3 meters.
 DL6575
 DL6575.The orthometric height was determined by differential leveling and
 DL6575.adjusted by the NATIONAL GEODETIC SURVEY
 DL6575.in March 2010.
 DL6575
 DL6575.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6575.GEOID18 height accuracy estimate available here.
 DL6575
 DL6575.Click photographs - Photos may exist for this station.
 DL6575
 DL6575.The dynamic height is computed by dividing the NAVD 88
 DL6575.geopotential number by the normal gravity value computed on the
 DL6575.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6575.degrees latitude (g = 980.6199 gals.).
 DL6575
 DL6575.The modeled gravity was interpolated from observed gravity values.
 DL6575
 DL6575;                    North         East    Units  Estimated Accuracy
 DL6575;SPC MD       -   173,051.0     416,004.8     MT  (+/- 3 meters HH1 GPS) 
 DL6575
 DL6575_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4336143365(NAD 83)
 DL6575
 DL6575                          SUPERSEDED SURVEY CONTROL
 DL6575
 DL6575.No superseded survey control is available for this station.
 DL6575
 DL6575_MARKER: DD = SURVEY DISK
 DL6575_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6575_STAMPING: 4/92 30IA
 DL6575_MARK LOGO: MD-027
 DL6575_PROJECTION: RECESSED 5 CENTIMETERS
 DL6575_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6575_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6575+STABILITY: SURFACE MOTION
 DL6575_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6575+SATELLITE: SATELLITE OBSERVATIONS - May 24, 2007
 DL6575
 DL6575  HISTORY     - Date     Condition        Report By
 DL6575  HISTORY     - 199204   MONUMENTED       MD-027
 DL6575  HISTORY     - 20070524 GOOD             MDSHA
 DL6575
 DL6575                          STATION DESCRIPTION
 DL6575
 DL6575'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6575'THE STATION IS LOCATED ABOUT 3.0 MI (4.8 KM) SOUTH-SOUTHWEST OF
 DL6575'ELLICOTT CITY, 2.5 MI (4.0 KM) EAST-NORTHEAST OF COLUMBIA AND 0.4 MI
 DL6575'(0.6 KM) WEST-NORTHWEST OF JONESTOWN.
 DL6575'
 DL6575'TO REACH FROM THE STATE HIGHWAY 108 BRIDGE OVER U.S.HIGHWAY 29, GO
 DL6575'SOUTHEAST ALONG STATE HIGHWAY 108 FOR 1.75 MI (2.8 KM) TO THE MOST
 DL6575'WESTERLY ENTRANCE TO HOWARD COUNTY SENIOR HIGH SCHOOL AND THE STATION
 DL6575'ON THE LEFT.
 DL6575'
 DL6575'IT IS 37.2 FT (11.3 M) SOUTHEAST OF POWER POLE NUMBER 501371, 30.2 FT
 DL6575'(9.2 M) NORTHEAST OF THE CENTERLINE OF THE HIGHWAY, 44.0 FT (13.4 M)
 DL6575'NORTHWEST OF THE CENTERLINE OF THE ENTRANCE, 29.5 FT (9.0 M) WEST OF
 DL6575'THE CENTER ONE OF THREE METAL PETROLEUM PIPELINE WARNING MARKERS AND
 DL6575'SET IN THE TOP OF A 10 INCH (25 CM) ROUND CONCRETE MONUMENT ABOUT 3 FT
 DL6575'(0.9 M) HIGHER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0616 ***********************************************************************
 JV0616  DESIGNATION -  31
 JV0616  PID         -  JV0616
 JV0616  STATE/COUNTY-  MD/BALTIMORE
 JV0616  COUNTRY     -  US
 JV0616  USGS QUAD   -  RELAY (2016)
 JV0616
 JV0616                         *CURRENT SURVEY CONTROL
 JV0616  ______________________________________________________________________
 JV0616* NAD 83(1986) POSITION- 39 13 20.     (N) 076 42 46.     (W)   SCALED
 JV0616* NAVD 88 ORTHO HEIGHT -    21.616 (meters)       70.92  (feet) ADJUSTED
 JV0616  ______________________________________________________________________
 JV0616  GEOID HEIGHT    -        -32.520 (meters)                     GEOID18
 JV0616  DYNAMIC HEIGHT  -         21.605 (meters)       70.88  (feet) COMP
 JV0616  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV0616
 JV0616  VERT ORDER      -  FIRST     CLASS II
 JV0616
 JV0616.The horizontal coordinates were scaled from a map and have
 JV0616.an estimated accuracy of +/- 6 seconds.
 JV0616
 JV0616.The orthometric height was determined by differential leveling and
 JV0616.adjusted by the NATIONAL GEODETIC SURVEY
 JV0616.in June 1991.
 JV0616
 JV0616.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0616.GEOID18 height accuracy estimate available here.
 JV0616
 JV0616.Click photographs - Photos may exist for this station.
 JV0616
 JV0616.The dynamic height is computed by dividing the NAVD 88
 JV0616.geopotential number by the normal gravity value computed on the
 JV0616.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0616.degrees latitude (g = 980.6199 gals.).
 JV0616
 JV0616.The modeled gravity was interpolated from observed gravity values.
 JV0616
 JV0616;                    North         East    Units  Estimated Accuracy
 JV0616;SPC MD       -   172,720.      424,800.      MT  (+/- 180 meters Scaled)
 JV0616
 JV0616_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ521428(NAD 83)
 JV0616
 JV0616                          SUPERSEDED SURVEY CONTROL
 JV0616
 JV0616  NGVD 29 (11/26/84)   21.840  (m)           71.65   (f) ADJUSTED    1 2
 JV0616
 JV0616.Superseded values are not recommended for survey control.
 JV0616
 JV0616.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0616.See file dsdata.pdf to determine how the superseded data were derived.
 JV0616
 JV0616_MARKER: B = BOLT
 JV0616_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0616_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0616+STABILITY: SURFACE MOTION
 JV0616
 JV0616  HISTORY     - Date     Condition        Report By
 JV0616  HISTORY     - 1903     MONUMENTED       BORR
 JV0616  HISTORY     - 1959     GOOD             CGS
 JV0616  HISTORY     - 19980429 MARK NOT FOUND   MDSHA
 JV0616  HISTORY     - 20030315 MARK NOT FOUND   USPSQD
 JV0616
 JV0616                          STATION DESCRIPTION
 JV0616
 JV0616'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0616'AT RELAY.
 JV0616'AT RELAY, BALTIMORE COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JV0616'AT THE NORTH END OF THOMAS VIADUCT OVER PATAPSCO RIVER, IN THE
 JV0616'TOP OF THE GRANITE POST AT THE NORTH END OF THE EAST BALUSTRADE,
 JV0616'10 FEET EAST OF THE EAST RAIL OF THE NORTH-BOUND MAIN TRACK, AND
 JV0616'ABOUT 2 FEET HIGHER THAN THE TRACK.  A COPPER BOLT.
 JV0616
 JV0616                          STATION RECOVERY (1998)
 JV0616
 JV0616'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV0616'NOT RECOVERED.  THE VIADUCT WAS SEARCHED AND THE STATION WAS NOT
 JV0616'RECOVERED.
 JV0616
 JV0616                          STATION RECOVERY (2003)
 JV0616
 JV0616'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV0616'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2627 ***********************************************************************
 JV2627  DESIGNATION -  31
 JV2627  PID         -  JV2627
 JV2627  STATE/COUNTY-  MD/MONTGOMERY
 JV2627  COUNTRY     -  US
 JV2627  USGS QUAD   -  KENSINGTON (2016)
 JV2627
 JV2627                         *CURRENT SURVEY CONTROL
 JV2627  ______________________________________________________________________
 JV2627* NAD 83(1986) POSITION- 39 04 52.     (N) 077 04 35.     (W)   SCALED
 JV2627* NAVD 88 ORTHO HEIGHT -   106.46  (+/-2cm)      349.3   (feet) VERTCON3
 JV2627  ______________________________________________________________________
 JV2627  GEOID HEIGHT    -        -31.833 (meters)                     GEOID18
 JV2627  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2627
 JV2627.The horizontal coordinates were scaled from a map and have
 JV2627.an estimated accuracy of +/- 6 seconds.
 JV2627
 JV2627.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2627.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2627
 JV2627.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2627.GEOID18 height accuracy estimate available here.
 JV2627
 JV2627.The vertical order pertains to the NGVD 29 superseded value.
 JV2627
 JV2627.Click photographs - Photos may exist for this station.
 JV2627
 JV2627;                    North         East    Units  Estimated Accuracy
 JV2627;SPC MD       -   157,010.      393,390.      MT  (+/- 180 meters Scaled)
 JV2627
 JV2627_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ203278(NAD 83)
 JV2627
 JV2627                          SUPERSEDED SURVEY CONTROL
 JV2627
 JV2627  NGVD 29 (11/26/84)  106.679  (m)          350.00   (f) ADJUSTED    2 0
 JV2627
 JV2627.Superseded values are not recommended for survey control.
 JV2627
 JV2627.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2627.See file dsdata.pdf to determine how the superseded data were derived.
 JV2627
 JV2627_MARKER: DD = SURVEY DISK
 JV2627_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2627_STAMPING: 31
 JV2627_MARK LOGO: CGS+SS
 JV2627_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2627+STABILITY: SURFACE MOTION
 JV2627
 JV2627  HISTORY     - Date     Condition        Report By
 JV2627  HISTORY     - 1934     MONUMENTED       MDGS
 JV2627  HISTORY     - 1944     GOOD             WSSC
 JV2627  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2627
 JV2627                          STATION DESCRIPTION
 JV2627
 JV2627'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2627'2.2 MI S FROM NORBECK.
 JV2627'ON GEORGIA AVENUE (STATE HIGHWAY 97), 185 FEET SOUTH OF THE ROAD
 JV2627'LEADING EAST TO ST. MARYS CHAPEL, AT THE ASPEN HILL KENNELS,
 JV2627'33 FEET WEST OF THE CENTERLINE OF THE HIGHWAY, AND IN THE
 JV2627'LAWN.
 JV2627
 JV2627                          STATION RECOVERY (1995)
 JV2627
 JV2627'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2627'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7817 ***********************************************************************
 DR7817  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7817  DESIGNATION -  31
 DR7817  PID         -  DR7817
 DR7817  STATE/COUNTY-  MD/QUEEN ANNES
 DR7817  COUNTRY     -  US
 DR7817  USGS QUAD   -  SUDLERSVILLE (2017)
 DR7817
 DR7817                         *CURRENT SURVEY CONTROL
 DR7817  ______________________________________________________________________
 DR7817* NAD 83(2011) POSITION- 39 11 25.06430(N) 075 45 56.11327(W)   ADJUSTED
 DR7817* NAD 83(2011) ELLIP HT-   -14.323 (meters)        (02/02/22)   ADJUSTED
 DR7817* NAD 83(2011) EPOCH   -  2010.00
 DR7817* NAVD 88 ORTHO HEIGHT -    19.58  (meters)       64.2   (feet) GPS OBS
 DR7817  ______________________________________________________________________
 DR7817  GEOID HEIGHT    -        -33.905 (meters)                     GEOID18
 DR7817  NAD 83(2011) X  -  1,217,152.070 (meters)                     COMP
 DR7817  NAD 83(2011) Y  - -4,798,018.395 (meters)                     COMP
 DR7817  NAD 83(2011) Z  -  4,008,703.932 (meters)                     COMP
 DR7817  LAPLACE CORR    -         -3.31  (seconds)                    DEFLEC18
 DR7817
 DR7817  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7817  Standards:
 DR7817         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7817            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7817  -------------------------------------------------------------------
 DR7817  NETWORK    0.70   1.57           0.31   0.26   0.80     -0.15541978
 DR7817  -------------------------------------------------------------------
 DR7817  Click here for local accuracies and other accuracy information.
 DR7817
 DR7817.The horizontal coordinates were established by GPS observations
 DR7817.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7817
 DR7817.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7817.been affixed to the stable North American tectonic plate. See 
 DR7817.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7817
 DR7817.The horizontal coordinates are valid at the epoch date displayed above
 DR7817.which is a decimal equivalence of Year/Month/Day.
 DR7817
 DR7817.The orthometric height was determined by GPS observations and a
 DR7817.high-resolution geoid model using precise GPS observation and
 DR7817.processing techniques.
 DR7817
 DR7817.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7817.GEOID18 height accuracy estimate available here.
 DR7817
 DR7817.Click photographs - Photos may exist for this station.
 DR7817
 DR7817.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7817
 DR7817.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7817
 DR7817.The ellipsoidal height was determined by GPS observations
 DR7817.and is referenced to NAD 83.
 DR7817
 DR7817. The following values were computed from the NAD 83(2011) position.
 DR7817
 DR7817;                    North         East     Units Scale Factor Converg.
 DR7817;SPC MD       -   169,852.421   506,638.738   MT  0.99996487   +0 46 29.1
 DR7817;SPC MD       -   557,257.48  1,662,197.26   sFT  0.99996487   +0 46 29.1
 DR7817;UTM  18      - 4,338,173.372   433,884.019   MT  0.99965382   -0 29 01.6
 DR7817
 DR7817!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7817!SPC MD       -   1.00000225  x   0.99996487  =   0.99996712
 DR7817!UTM  18      -   1.00000225  x   0.99965382  =   0.99965607
 DR7817
 DR7817_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3388438173(NAD 83)
 DR7817
 DR7817                          SUPERSEDED SURVEY CONTROL
 DR7817
 DR7817.No superseded survey control is available for this station.
 DR7817
 DR7817_MARKER: DD = SURVEY DISK
 DR7817_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7817_STAMPING: 31
 DR7817_MARK LOGO: MD-035
 DR7817_PROJECTION: RECESSED 15 CENTIMETERS
 DR7817_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7817+STABILITY: SURFACE MOTION
 DR7817_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7817+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7817
 DR7817  HISTORY     - Date     Condition        Report By
 DR7817  HISTORY     - UNK      MONUMENTED       MD-035
 DR7817  HISTORY     - 20210309 GOOD             MDSHA
 DR7817
 DR7817                          STATION DESCRIPTION
 DR7817
 DR7817'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7817'THE MARK IS LOCATED ABOUT 6.1 MI (9.8 KM) SOUTHEAST OF MILLINGTON, 5.4
 DR7817'MI (8.7 KM) NORTH OF MARYDEL AND 5.0 MI (8.0 KM) EAST OF SUDLERSVILLE.
 DR7817'TO REACH FROM THE JUNCTION OF US 301 AND MD 290, GO SOUTH-SOUTHEAST ON
 DR7817'MD 290 FOR 1.20 MI (1.93 KM) TO AN INTERSECTION.  TURN LEFT AND GO
 DR7817'EAST ON MD 300 FOR 6.99 MI (11.25 KM) TO THE JUNCTION OF ANDERSON
 DR7817'CORNER ROAD AND THE MARK ON THE RIGHT IN THE EAST ANGLE OF THE
 DR7817'INTERSECTION.
 DR7817'
 DR7817'IT IS 97.4 FT (29.7 M) NORTHWEST OF POWER LINE POLE NUMBER 112 113,
 DR7817'69.1 FT (21.1 M) EAST OF A STOP SIGN ON A METAL POST AT THE
 DR7817'INTERSECTION OF MD ROUTE 300 (ANDERSON CORNER ROAD), 65.6 FT (20.0 M)
 DR7817'SOUTH-SOUTHEAST OF TELEPHONE PEDESTAL NUMBER 104, 35.7 FT (10.9 M)
 DR7817'SOUTH OF THE CENTERLINE OF MD ROUTE 300 (SUDLERSVILLE ROAD), 22.5 FT
 DR7817'(6.9 M) NORTH-NORTHEAST OF THE CENTERLINE OF ANDERSON CORNER ROAD AND
 DR7817'SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6029 ***********************************************************************
 DN6029  DESIGNATION -  31 6 RESET
 DN6029  PID         -  DN6029
 DN6029  STATE/COUNTY-  MD/CARROLL
 DN6029  COUNTRY     -  US
 DN6029  USGS QUAD   -  NEW WINDSOR (2016)
 DN6029
 DN6029                         *CURRENT SURVEY CONTROL
 DN6029  ______________________________________________________________________
 DN6029* NAD 83(1986) POSITION- 39 30 55.4    (N) 077 06 29.8    (W)   HD_HELD2
 DN6029* NAVD 88 ORTHO HEIGHT -   189.110 (meters)      620.44  (feet) ADJUSTED
 DN6029  ______________________________________________________________________
 DN6029  GEOID HEIGHT    -        -32.270 (meters)                     GEOID18
 DN6029  DYNAMIC HEIGHT  -        189.012 (meters)      620.12  (feet) COMP
 DN6029  MODELED GRAVITY -    980,104.5   (mgal)                       NAVD 88
 DN6029
 DN6029  VERT ORDER      -  SECOND    CLASS II
 DN6029
 DN6029.The horizontal coordinates were established by autonomous hand held GPS
 DN6029.observations and have an estimated accuracy of +/- 10 meters.
 DN6029
 DN6029.The orthometric height was determined by differential leveling and
 DN6029.adjusted by the NATIONAL GEODETIC SURVEY
 DN6029.in June 2012.
 DN6029
 DN6029.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6029.GEOID18 height accuracy estimate available here.
 DN6029
 DN6029.Click photographs - Photos may exist for this station.
 DN6029
 DN6029.The dynamic height is computed by dividing the NAVD 88
 DN6029.geopotential number by the normal gravity value computed on the
 DN6029.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6029.degrees latitude (g = 980.6199 gals.).
 DN6029
 DN6029.The modeled gravity was interpolated from observed gravity values.
 DN6029
 DN6029;                    North         East    Units  Estimated Accuracy
 DN6029;SPC MD       -   205,229.      390,689.      MT  (+/- 10 meters HH2 GPS)
 DN6029
 DN6029_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1876476094(NAD 83)
 DN6029
 DN6029                          SUPERSEDED SURVEY CONTROL
 DN6029
 DN6029.No superseded survey control is available for this station.
 DN6029
 DN6029_MARKER: DB = BENCH MARK DISK
 DN6029_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DN6029_SP_SET: DRAINAGE INLET
 DN6029_STAMPING: 31-6 RESET 1986
 DN6029_MARK LOGO: MDSHA
 DN6029_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DN6029_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6029+SATELLITE: SATELLITE OBSERVATIONS - May 18, 2014
 DN6029
 DN6029  HISTORY     - Date     Condition        Report By
 DN6029  HISTORY     - 1986     MONUMENTED       MDSHA
 DN6029  HISTORY     - 20080128 GOOD             MDSHA
 DN6029  HISTORY     - 20140518 GOOD             RODCON
 DN6029
 DN6029                          STATION DESCRIPTION
 DN6029
 DN6029'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6029'THE MARK IS LOCATED ABOUT 5.2 MI (8.4 KM) SOUTHEAST OF UNION BRIDGE,
 DN6029'4.1 MI (6.6 KM) NORTH-NORTHWEST OF TAYLORSVILLE AND 1.9 MI (3.1 KM)
 DN6029'SOUTH OF NEW WINDSOR.
 DN6029'
 DN6029'TO REACH THE MARK FROM THE RAILROAD TRACKS AND MARYLAND ROUTE 31 IN
 DN6029'NEW WINDSOR, GO SOUTHWEST ON MARYLAND ROUTE 31 FOR 1.8 MI (2.9 KM) TO
 DN6029'MARSTON ROAD ON THE LEFT.  TURN LEFT AND GO SOUTHEAST ON MARSTON ROAD
 DN6029'FOR 0.1 MI (0.2 KM) TO THE MARK ON THE LEFT AND ACROSS MARSTON ROAD
 DN6029'FROM THE ENTRANCE TO RESIDENCE NUMBER 2116.
 DN6029'
 DN6029'IT IS 11.5 FT (3.5 M) NORTHEAST OF THE CENTERLINE OF MARSTON ROAD,
 DN6029'103.0 FT (31.4 M) SOUTHEAST OF C AND P POLE NUMBER 66, 46.5 FT (14.2
 DN6029'M) NORTH OF A TWIN WALNUT TREE, SOUTH OF A CARSONITE WITNESS POST AND
 DN6029'SET IN THE TOP OF THE SOUTHWEST CORNER OF A CONCRETE DRAINAGE INLET.
 DN6029
 DN6029                          STATION RECOVERY (2014)
 DN6029
 DN6029'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DN6029'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6030 ***********************************************************************
 DN6030  DESIGNATION -  31 7
 DN6030  PID         -  DN6030
 DN6030  STATE/COUNTY-  MD/CARROLL
 DN6030  COUNTRY     -  US
 DN6030  USGS QUAD   -  NEW WINDSOR (2016)
 DN6030
 DN6030                         *CURRENT SURVEY CONTROL
 DN6030  ______________________________________________________________________
 DN6030* NAD 83(1986) POSITION- 39 31 50.5    (N) 077 06 07.3    (W)   HD_HELD2
 DN6030* NAVD 88 ORTHO HEIGHT -   178.933 (meters)      587.05  (feet) ADJUSTED
 DN6030  ______________________________________________________________________
 DN6030  GEOID HEIGHT    -        -32.315 (meters)                     GEOID18
 DN6030  DYNAMIC HEIGHT  -        178.840 (meters)      586.74  (feet) COMP
 DN6030  MODELED GRAVITY -    980,104.1   (mgal)                       NAVD 88
 DN6030
 DN6030  VERT ORDER      -  SECOND    CLASS II
 DN6030
 DN6030.The horizontal coordinates were established by autonomous hand held GPS
 DN6030.observations and have an estimated accuracy of +/- 10 meters.
 DN6030
 DN6030.The orthometric height was determined by differential leveling and
 DN6030.adjusted by the NATIONAL GEODETIC SURVEY
 DN6030.in June 2012.
 DN6030
 DN6030.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6030.GEOID18 height accuracy estimate available here.
 DN6030
 DN6030.Click photographs - Photos may exist for this station.
 DN6030
 DN6030.The dynamic height is computed by dividing the NAVD 88
 DN6030.geopotential number by the normal gravity value computed on the
 DN6030.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6030.degrees latitude (g = 980.6199 gals.).
 DN6030
 DN6030.The modeled gravity was interpolated from observed gravity values.
 DN6030
 DN6030;                    North         East    Units  Estimated Accuracy
 DN6030;SPC MD       -   206,928.      391,228.      MT  (+/- 10 meters HH2 GPS)
 DN6030
 DN6030_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1934177780(NAD 83)
 DN6030
 DN6030                          SUPERSEDED SURVEY CONTROL
 DN6030
 DN6030.No superseded survey control is available for this station.
 DN6030
 DN6030_MARKER: DB = BENCH MARK DISK
 DN6030_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6030_STAMPING: 31-7 1980
 DN6030_MARK LOGO: MDSHA
 DN6030_PROJECTION: FLUSH
 DN6030_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6030+STABILITY: SURFACE MOTION
 DN6030_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DN6030+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2014
 DN6030
 DN6030  HISTORY     - Date     Condition        Report By
 DN6030  HISTORY     - 1980     MONUMENTED       MDSHA
 DN6030  HISTORY     - 20080123 GOOD             MDSHA
 DN6030  HISTORY     - 20140516 GOOD             RODCON
 DN6030
 DN6030                          STATION DESCRIPTION
 DN6030
 DN6030'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6030'THE MARK IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTH OF TAYLORSVILLE, 4.9
 DN6030'MI (7.9 KM) EAST-SOUTHEAST OF UNION BRIDGE AND 0.9 MI (1.4 KM)
 DN6030'SOUTH-SOUTHEAST OF NEW WINDSOR.  OWNERSHIP--STRAWBRIDGE UNITED
 DN6030'METHODIST CHURCH.
 DN6030'
 DN6030'TO REACH THE MARK FROM THE RAILROAD TRACKS AND MARYLAND ROUTE 31 IN
 DN6030'NEW WINDSOR, GO NORTHWEST ON MARYLAND ROUTE 31 FOR 0.7 MI (1.1 KM) TO
 DN6030'WAKEFIELD VALLEY ROAD AND THE MARK ON THE RIGHT.
 DN6030'
 DN6030'IT IS 26.5 FT (8.1 M) EAST OF THE CENTERLINE OF MARYLAND ROUTE 31,
 DN6030'46.0 FT (14.0 M) SOUTH OF THE CENTERLINE OF WAKEFIELD VALLEY ROAD,
 DN6030'39.5 FT (12.0 M) SOUTHWEST OF P AND E POLE NUMBER U 817 AND 8.5 FT
 DN6030'(2.6 M) NORTHWEST OF A 30 INCH (76 CM) OAK TREE.
 DN6030
 DN6030                          STATION RECOVERY (2014)
 DN6030
 DN6030'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DN6030'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8520 ***********************************************************************
 AI8520  DESIGNATION -  31 E 7
 AI8520  PID         -  AI8520
 AI8520  STATE/COUNTY-  MD/HOWARD
 AI8520  COUNTRY     -  US
 AI8520  USGS QUAD   -  SAVAGE (2016)
 AI8520
 AI8520                         *CURRENT SURVEY CONTROL
 AI8520  ______________________________________________________________________
 AI8520* NAD 83(2011) POSITION- 39 14 16.66258(N) 076 46 11.68541(W)   ADJUSTED
 AI8520* NAD 83(2011) ELLIP HT-   113.342 (meters)        (06/27/12)   ADJUSTED
 AI8520* NAD 83(2011) EPOCH   -  2010.00
 AI8520* NAVD 88 ORTHO HEIGHT -   145.7   (meters)      478.    (feet) GPS OBS
 AI8520  ______________________________________________________________________
 AI8520  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8520  GEOID HEIGHT    -        -32.313 (meters)                     GEOID99
 AI8520  GEOID HEIGHT    -        -32.324 (meters)                     GEOID18
 AI8520  NAD 83(2011) X  -  1,132,122.885 (meters)                     COMP
 AI8520  NAD 83(2011) Y  - -4,815,454.832 (meters)                     COMP
 AI8520  NAD 83(2011) Z  -  4,012,884.765 (meters)                     COMP
 AI8520  LAPLACE CORR    -         -4.96  (seconds)                    DEFLEC18
 AI8520
 AI8520  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8520  Standards:
 AI8520         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8520            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8520  -------------------------------------------------------------------
 AI8520  NETWORK    0.83   1.06           0.38   0.29   0.54      0.05976538
 AI8520  -------------------------------------------------------------------
 AI8520  Click here for local accuracies and other accuracy information.
 AI8520
 AI8520.The horizontal coordinates were established by GPS observations
 AI8520.and adjusted by the National Geodetic Survey in June 2012.
 AI8520
 AI8520.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8520.been affixed to the stable North American tectonic plate. See 
 AI8520.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8520
 AI8520.The horizontal coordinates are valid at the epoch date displayed above
 AI8520.which is a decimal equivalence of Year/Month/Day.
 AI8520
 AI8520.The orthometric height was determined by GPS observations and a
 AI8520.high-resolution geoid model.
 AI8520
 AI8520.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8520.GEOID18 height accuracy estimate available here.
 AI8520
 AI8520.Click photographs - Photos may exist for this station.
 AI8520
 AI8520.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8520
 AI8520.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8520
 AI8520.The ellipsoidal height was determined by GPS observations
 AI8520.and is referenced to NAD 83.
 AI8520
 AI8520. The following values were computed from the NAD 83(2011) position.
 AI8520
 AI8520;                    North         East     Units Scale Factor Converg.
 AI8520;SPC MD       -   174,448.160   419,864.087   MT  0.99996978   +0 08 39.9
 AI8520;SPC MD       -   572,335.34  1,377,504.09   sFT  0.99996978   +0 08 39.9
 AI8520;UTM  18      - 4,344,676.615   347,249.935   MT  0.99988729   -1 07 11.1
 AI8520
 AI8520!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8520!SPC MD       -   0.99998222  x   0.99996978  =   0.99995200
 AI8520!UTM  18      -   0.99998222  x   0.99988729  =   0.99986951
 AI8520
 AI8520_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4724944676(NAD 83)
 AI8520
 AI8520                          SUPERSEDED SURVEY CONTROL
 AI8520
 AI8520  NAD 83(2007)-  39 14 16.66285(N)    076 46 11.68640(W) AD(2002.00) 0
 AI8520  ELLIP H (02/10/07)  113.364  (m)                       GP(2002.00)    
 AI8520  ELLIP H (08/30/02)  113.363  (m)                       GP(       ) 4 2
 AI8520  NAD 83(1991)-  39 14 16.66254(N)    076 46 11.68613(W) AD(       ) 1
 AI8520  ELLIP H (11/16/00)  113.299  (m)                       GP(       ) 4 1
 AI8520
 AI8520.Superseded values are not recommended for survey control.
 AI8520
 AI8520.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8520.See file dsdata.pdf to determine how the superseded data were derived.
 AI8520
 AI8520_MARKER: DD = SURVEY DISK
 AI8520_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8520_STAMPING: 31E7 8/91
 AI8520_MARK LOGO: MD-027
 AI8520_PROJECTION: RECESSED 10 CENTIMETERS
 AI8520_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8520_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8520+STABILITY: SURFACE MOTION
 AI8520_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8520+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8520
 AI8520  HISTORY     - Date     Condition        Report By
 AI8520  HISTORY     - 1991     MONUMENTED       MD-027
 AI8520  HISTORY     - 20000915 GOOD             MD-027
 AI8520  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 AI8520  HISTORY     - 20061001 GOOD             GEOCAC
 AI8520
 AI8520                          STATION DESCRIPTION
 AI8520
 AI8520'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8520'DESCRIPTION BY HOWARD COUNTY 2000.  THE STATION IS AT ELLICOTT CITY
 AI8520'ON ILCHESTER ROAD IN FRONT OF OUR LADY OF PERPETUAL HELP
 AI8520'CHURCH.  TO REACH THE STATION FROM THE INTERSECTION  OF STATE
 AI8520'HIGHWAY 103   AND STATE HIGHWAY 104 GO 0.8 MILES SOUTHEAST ALONG
 AI8520'ROUTE 103 TO   ILCHESTER ROAD, TURN LEFT (NORTHEAST0 AND FOLLOW
 AI8520'ILCHESTER ROAD   FOR 1.4 MILES TO THE CHURCH AND STATION ON THE
 AI8520'RIGHT. THE STATION  IS 250 FEET SOUTHWEST OF BEECHWOOD ROAD, 9.3
 AI8520'FEET  SOUTHEAST OF  EAST FACE OF CURB ILCHESTER ROAD, 123.7 FEET TO
 AI8520'POLE  C AND P 94 ACROSS  THE STREET AND 53 FEET TO POLE  C AND P  94
 AI8520'1/2 ALSO   ACROOS THE STREET.   THE STATION IS A STANDARD HOWARD
 AI8520'COUNTY   SURVEY DISC  SET ON  CONCRETE BASE AND FLUSH WITH THE
 AI8520'GROUND.
 AI8520'
 AI8520
 AI8520                          STATION RECOVERY (2003)
 AI8520
 AI8520'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 AI8520'NOT FOUND.  NOTE-- THE UTILITY POLES AS DESCRIBED ARE PRESENT, BUT THE
 AI8520'MONUMENT WAS NOT FOUND.
 AI8520
 AI8520                          STATION RECOVERY (2006)
 AI8520
 AI8520'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 AI8520'STATION OBSERVED ON THE EAST SIDE OF ILCHESTER ROAD AT OUR LADY OF
 AI8520'PERPETUAL HELP CHURCH. LOCATION IS APPROXIMATELY 26 FEET SOUTH OF A
 AI8520'WOOD POST SUPPORTING A MAILBOX FOR HOUSE 4840, AND APPROXIMATELY 18
 AI8520'FEET WEST OF A PINE TREE, AND APPROXIMATELY 27 FEET SOUTH OF A YELLOW
 AI8520'GRAPHIC-ONLY PEDESTRIAN CROSSING SIGN.
 AI8520'
 AI8520'ALSO, THE 2000 DESCRIPTION GIVES A DISTANCE FROM THE EAST FACE OF THE
 AI8520'CURB. NO CURBS WERE OBSERVED, THE MARK IS ABOUT 8 FEET EAST OF THE
 AI8520'EDGE OF THE PAVEMENT.
 AI8520'
 AI8520'THIS DISK WAS APPARENTLY STAMPED INCORRECTLY AT FIRST. THOSE NUMBERS
 AI8520'WERE CROSSED OUT, AND THE CORRECT DESIGNATION, 31E7, WAS ADDED BELOW.
 AI8520'THE MARK LOGO ON THE DATASHEET, MD-027, DOES NOT APPEAR ON THE DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1090 ***********************************************************************
 HV1090  DESIGNATION -  3135 WSSC
 HV1090  PID         -  HV1090
 HV1090  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1090  COUNTRY     -  US
 HV1090  USGS QUAD   -  PISCATAWAY (2016)
 HV1090
 HV1090                         *CURRENT SURVEY CONTROL
 HV1090  ______________________________________________________________________
 HV1090* NAD 83(1986) POSITION- 38 41 17.8    (N) 076 58 51.9    (W)   HD_HELD2
 HV1090* NAVD 88 ORTHO HEIGHT -    20.519 (meters)       67.32  (feet) ADJUSTED
 HV1090  ______________________________________________________________________
 HV1090  GEOID HEIGHT    -        -32.566 (meters)                     GEOID18
 HV1090  DYNAMIC HEIGHT  -         20.507 (meters)       67.28  (feet) COMP
 HV1090  MODELED GRAVITY -    980,070.4   (mgal)                       NAVD 88
 HV1090
 HV1090  VERT ORDER      -  SECOND    CLASS 0
 HV1090
 HV1090.The horizontal coordinates were established by autonomous hand held GPS
 HV1090.observations and have an estimated accuracy of +/- 10 meters.
 HV1090
 HV1090.The orthometric height was determined by differential leveling and
 HV1090.adjusted by the NATIONAL GEODETIC SURVEY
 HV1090.in June 1991.
 HV1090
 HV1090.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1090.GEOID18 height accuracy estimate available here.
 HV1090
 HV1090.Click photographs - Photos may exist for this station.
 HV1090
 HV1090.The dynamic height is computed by dividing the NAVD 88
 HV1090.geopotential number by the normal gravity value computed on the
 HV1090.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1090.degrees latitude (g = 980.6199 gals.).
 HV1090
 HV1090.The modeled gravity was interpolated from observed gravity values.
 HV1090
 HV1090;                    North         East    Units  Estimated Accuracy
 HV1090;SPC MD       -   113,403.      401,646.      MT  (+/- 10 meters HH2 GPS)
 HV1090
 HV1090_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2769684047(NAD 83)
 HV1090
 HV1090                          SUPERSEDED SURVEY CONTROL
 HV1090
 HV1090  NGVD 29 (05/01/89)   20.756  (m)           68.10   (f) ADJUSTED    2 0
 HV1090  NGVD 29 (??/??/87)   20.789  (m)           68.21   (f) SUPERSEDED  2 0
 HV1090
 HV1090.Superseded values are not recommended for survey control.
 HV1090
 HV1090.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1090.See file dsdata.pdf to determine how the superseded data were derived.
 HV1090
 HV1090_MARKER: B = BOLT
 HV1090_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV1090_SP_SET: CULVERT HEADWALL
 HV1090_STAMPING: WSSC BM NO 3135
 HV1090_MARK LOGO: WSSC
 HV1090_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1090
 HV1090  HISTORY     - Date     Condition        Report By
 HV1090  HISTORY     - UNK      MONUMENTED       WSSC
 HV1090  HISTORY     - 1966     GOOD             CGS
 HV1090  HISTORY     - 20040726 POOR             GEOCAC
 HV1090
 HV1090                          STATION DESCRIPTION
 HV1090
 HV1090'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 HV1090'AT SOUTH PISCATAWAY.
 HV1090'AT SOUTH PISCATAWAY, IN THE SOUTHEAST ANGLE OF THE INTERSECTION
 HV1090'FORMED LIVINGSTON ROAD, FARMINGTON ROAD AND BERRY ROAD, SET
 HV1090'IN THE TOP OF CONCRETE HEADWALL (RIGHT ANGLE SHAPED) OF A
 HV1090'CONCRETE CULVERT, ON THE SOUTH SIDE OF BERRY ROAD, LOCATED
 HV1090'NEAR THE CENTER OF THE PART OF THE HEADWALL THAT IS PARALLEL
 HV1090'WITH BERRY ROAD.
 HV1090
 HV1090                          STATION RECOVERY (2004)
 HV1090
 HV1090'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV1090'THE STATION IS IN THE NORTHEAST ANGLE OF THE INTERSECTION OF
 HV1090'LIVINGSTON ROAD, FARMINGTON ROAD AND BERRY ROAD, ABOUT 43 FEET (13.10
 HV1090'M) NORTHEAST OF THE CENTERLINE OF BERRY ROAD, ABOUT 38 FEET (11.58 M)
 HV1090'SOUTHEAST OF THE CENTERLINE OF FARMINGTON ROAD, ABOUT 15 FEET
 HV1090'NORTHEAST OF THE NORTHEAST LEG OF A TWO-LEGGED METAL POST SUPPORTING A
 HV1090'STOP SIGN, AND ON THE NORTHEAST-MOST SECTION OF THE THREE-SECTION
 HV1090'HEADWALL.  THE HEADWALL IS BROKEN IN SEVERAL PLACES AND THE BOLT'S
 HV1090'LOCATION MAY CHANGE OVER TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2848 ***********************************************************************
 JV2848  DESIGNATION -  3175 WSSC
 JV2848  PID         -  JV2848
 JV2848  STATE/COUNTY-  MD/MONTGOMERY
 JV2848  COUNTRY     -  US
 JV2848  USGS QUAD   -  ROCKVILLE (2016)
 JV2848
 JV2848                         *CURRENT SURVEY CONTROL
 JV2848  ______________________________________________________________________
 JV2848* NAD 83(1986) POSITION- 39 03 00.     (N) 077 11 18.     (W)   SCALED
 JV2848* NAVD 88 ORTHO HEIGHT -   127.762 (meters)      419.17  (feet) ADJUSTED
 JV2848  ______________________________________________________________________
 JV2848  GEOID HEIGHT    -        -31.710 (meters)                     GEOID18
 JV2848  DYNAMIC HEIGHT  -        127.696 (meters)      418.95  (feet) COMP
 JV2848  MODELED GRAVITY -    980,108.0   (mgal)                       NAVD 88
 JV2848
 JV2848  VERT ORDER      -  SECOND    CLASS 0
 JV2848
 JV2848.The horizontal coordinates were scaled from a map and have
 JV2848.an estimated accuracy of +/- 6 seconds.
 JV2848
 JV2848.The orthometric height was determined by differential leveling and
 JV2848.adjusted by the NATIONAL GEODETIC SURVEY
 JV2848.in June 1991.
 JV2848
 JV2848.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2848.GEOID18 height accuracy estimate available here.
 JV2848
 JV2848.Click photographs - Photos may exist for this station.
 JV2848
 JV2848.The dynamic height is computed by dividing the NAVD 88
 JV2848.geopotential number by the normal gravity value computed on the
 JV2848.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2848.degrees latitude (g = 980.6199 gals.).
 JV2848
 JV2848.The modeled gravity was interpolated from observed gravity values.
 JV2848
 JV2848;                    North         East    Units  Estimated Accuracy
 JV2848;SPC MD       -   153,570.      383,700.      MT  (+/- 180 meters Scaled)
 JV2848
 JV2848_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ106246(NAD 83)
 JV2848
 JV2848                          SUPERSEDED SURVEY CONTROL
 JV2848
 JV2848  NGVD 29 (11/26/84)  127.988  (m)          419.91   (f) ADJUSTED    2 0
 JV2848
 JV2848.Superseded values are not recommended for survey control.
 JV2848
 JV2848.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2848.See file dsdata.pdf to determine how the superseded data were derived.
 JV2848
 JV2848_MARKER: B = BOLT
 JV2848_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2848_SP_SET: TREE
 JV2848_STAMPING: WSSC BM 3175
 JV2848_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2848
 JV2848  HISTORY     - Date     Condition        Report By
 JV2848  HISTORY     - UNK      MONUMENTED       WSSC
 JV2848  HISTORY     - 1965     GOOD             WSSC
 JV2848  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV2848
 JV2848                          STATION DESCRIPTION
 JV2848
 JV2848'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2848'2.8 MI N FROM POTOMAC.
 JV2848'2.8 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 JV2848'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAS ABOUT
 JV2848'35 FT. S.W. OF THE JUNCTION WITH TUCKERMAN LANE IN THE N. ROOT
 JV2848'OF A 36 INCH OAK TREE IN THE S. CORNER OF THE JUNCTION.  BENCH
 JV2848'MARK MAY ALSO BE REACHED BY GOING 4.0 MI. S.W. ALONG STATE HWY.
 JV2848'189 (FALLS ROAD) FROM ITS JUNCTION WITH STATE HWY. 28 AT
 JV2848'ROCKVILLE.
 JV2848
 JV2848                          STATION RECOVERY (2000)
 JV2848
 JV2848'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2848'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2850 ***********************************************************************
 JV2850  DESIGNATION -  3176 WSSC
 JV2850  PID         -  JV2850
 JV2850  STATE/COUNTY-  MD/MONTGOMERY
 JV2850  COUNTRY     -  US
 JV2850  USGS QUAD   -  ROCKVILLE (2016)
 JV2850
 JV2850                         *CURRENT SURVEY CONTROL
 JV2850  ______________________________________________________________________
 JV2850* NAD 83(1986) POSITION- 39 02 11.     (N) 077 11 37.     (W)   SCALED
 JV2850* NAVD 88 ORTHO HEIGHT -   125.479 (meters)      411.68  (feet) ADJUSTED
 JV2850  ______________________________________________________________________
 JV2850  GEOID HEIGHT    -        -31.714 (meters)                     GEOID18
 JV2850  DYNAMIC HEIGHT  -        125.414 (meters)      411.46  (feet) COMP
 JV2850  MODELED GRAVITY -    980,107.8   (mgal)                       NAVD 88
 JV2850
 JV2850  VERT ORDER      -  SECOND    CLASS 0
 JV2850
 JV2850.The horizontal coordinates were scaled from a map and have
 JV2850.an estimated accuracy of +/- 6 seconds.
 JV2850
 JV2850.The orthometric height was determined by differential leveling and
 JV2850.adjusted by the NATIONAL GEODETIC SURVEY
 JV2850.in June 1991.
 JV2850
 JV2850.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2850.GEOID18 height accuracy estimate available here.
 JV2850
 JV2850.Click photographs - Photos may exist for this station.
 JV2850
 JV2850.The dynamic height is computed by dividing the NAVD 88
 JV2850.geopotential number by the normal gravity value computed on the
 JV2850.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2850.degrees latitude (g = 980.6199 gals.).
 JV2850
 JV2850.The modeled gravity was interpolated from observed gravity values.
 JV2850
 JV2850;                    North         East    Units  Estimated Accuracy
 JV2850;SPC MD       -   152,060.      383,240.      MT  (+/- 180 meters Scaled)
 JV2850
 JV2850_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ101231(NAD 83)
 JV2850
 JV2850                          SUPERSEDED SURVEY CONTROL
 JV2850
 JV2850  NGVD 29 (11/26/84)  125.706  (m)          412.42   (f) ADJUSTED    2 0
 JV2850
 JV2850.Superseded values are not recommended for survey control.
 JV2850
 JV2850.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2850.See file dsdata.pdf to determine how the superseded data were derived.
 JV2850
 JV2850_MARKER: B = BOLT
 JV2850_SETTING: 0 = UNSPECIFIED SETTING
 JV2850_SP_SET: IRON PIPE
 JV2850_STAMPING: WSSC BM 3176
 JV2850_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2850
 JV2850  HISTORY     - Date     Condition        Report By
 JV2850  HISTORY     - UNK      MONUMENTED       WSSC
 JV2850  HISTORY     - 1965     GOOD             WSSC
 JV2850
 JV2850                          STATION DESCRIPTION
 JV2850
 JV2850'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2850'1.8 MI N FROM POTOMAC.
 JV2850'1.8 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 JV2850'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC 15.4
 JV2850'FT. S.W. OF THE CENTERLINE OF CRANFORD DRIVE, 58.7 FT. OF POLE
 JV2850'684756, AND 12.4 FT. N.E. OF POLE E620218 IN AN IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2851 ***********************************************************************
 JV2851  DESIGNATION -  3177 WSSC
 JV2851  PID         -  JV2851
 JV2851  STATE/COUNTY-  MD/MONTGOMERY
 JV2851  COUNTRY     -  US
 JV2851  USGS QUAD   -  ROCKVILLE (2016)
 JV2851
 JV2851                         *CURRENT SURVEY CONTROL
 JV2851  ______________________________________________________________________
 JV2851* NAD 83(1986) POSITION- 39 01 53.     (N) 077 11 53.     (W)   SCALED
 JV2851* NAVD 88 ORTHO HEIGHT -   119.541 (meters)      392.19  (feet) ADJUSTED
 JV2851  ______________________________________________________________________
 JV2851  GEOID HEIGHT    -        -31.715 (meters)                     GEOID18
 JV2851  DYNAMIC HEIGHT  -        119.479 (meters)      391.99  (feet) COMP
 JV2851  MODELED GRAVITY -    980,108.0   (mgal)                       NAVD 88
 JV2851
 JV2851  VERT ORDER      -  SECOND    CLASS 0
 JV2851
 JV2851.The horizontal coordinates were scaled from a map and have
 JV2851.an estimated accuracy of +/- 6 seconds.
 JV2851
 JV2851.The orthometric height was determined by differential leveling and
 JV2851.adjusted by the NATIONAL GEODETIC SURVEY
 JV2851.in June 1991.
 JV2851
 JV2851.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2851.GEOID18 height accuracy estimate available here.
 JV2851
 JV2851.Click photographs - Photos may exist for this station.
 JV2851
 JV2851.The dynamic height is computed by dividing the NAVD 88
 JV2851.geopotential number by the normal gravity value computed on the
 JV2851.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2851.degrees latitude (g = 980.6199 gals.).
 JV2851
 JV2851.The modeled gravity was interpolated from observed gravity values.
 JV2851
 JV2851;                    North         East    Units  Estimated Accuracy
 JV2851;SPC MD       -   151,510.      382,850.      MT  (+/- 180 meters Scaled)
 JV2851
 JV2851_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ097225(NAD 83)
 JV2851
 JV2851                          SUPERSEDED SURVEY CONTROL
 JV2851
 JV2851  NGVD 29 (11/26/84)  119.769  (m)          392.94   (f) ADJUSTED    2 0
 JV2851
 JV2851.Superseded values are not recommended for survey control.
 JV2851
 JV2851.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2851.See file dsdata.pdf to determine how the superseded data were derived.
 JV2851
 JV2851_MARKER: B = BOLT
 JV2851_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2851_SP_SET: HEADWALL
 JV2851_STAMPING: WSSC BM 3177
 JV2851_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2851
 JV2851  HISTORY     - Date     Condition        Report By
 JV2851  HISTORY     - UNK      MONUMENTED       WSSC
 JV2851  HISTORY     - 1965     GOOD             WSSC
 JV2851  HISTORY     - 20020314 MARK NOT FOUND   USPSQD
 JV2851
 JV2851                          STATION DESCRIPTION
 JV2851
 JV2851'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2851'1.3 MI N FROM POTOMAC.
 JV2851'1.3 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 JV2851'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC AT THE
 JV2851'N.E. CORNER OF THE ENTRANCE TO THE FALLS ROAD PUBLIC GOLF COURSE
 JV2851'IN THE TOP AND CENTERLINE OF THE CONCRETE HEADWALL.
 JV2851
 JV2851                          STATION RECOVERY (2002)
 JV2851
 JV2851'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 JV2851'NO HEADWALL - ENTRANCE WIDENED AND REPAVED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2830 ***********************************************************************
 JV2830  DESIGNATION -  3178 WSSC
 JV2830  PID         -  JV2830
 JV2830  STATE/COUNTY-  MD/MONTGOMERY
 JV2830  COUNTRY     -  US
 JV2830  USGS QUAD   -  ROCKVILLE (2016)
 JV2830
 JV2830                         *CURRENT SURVEY CONTROL
 JV2830  ______________________________________________________________________
 JV2830* NAD 83(1986) POSITION- 39 01 35.     (N) 077 12 14.     (W)   SCALED
 JV2830* NAVD 88 ORTHO HEIGHT -   121.793 (meters)      399.58  (feet) ADJUSTED
 JV2830  ______________________________________________________________________
 JV2830  GEOID HEIGHT    -        -31.714 (meters)                     GEOID18
 JV2830  DYNAMIC HEIGHT  -        121.730 (meters)      399.38  (feet) COMP
 JV2830  MODELED GRAVITY -    980,108.3   (mgal)                       NAVD 88
 JV2830
 JV2830  VERT ORDER      -  SECOND    CLASS 0
 JV2830
 JV2830.The horizontal coordinates were scaled from a map and have
 JV2830.an estimated accuracy of +/- 6 seconds.
 JV2830
 JV2830.The orthometric height was determined by differential leveling and
 JV2830.adjusted by the NATIONAL GEODETIC SURVEY
 JV2830.in June 1991.
 JV2830
 JV2830.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2830.GEOID18 height accuracy estimate available here.
 JV2830
 JV2830.Click photographs - Photos may exist for this station.
 JV2830
 JV2830.The dynamic height is computed by dividing the NAVD 88
 JV2830.geopotential number by the normal gravity value computed on the
 JV2830.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2830.degrees latitude (g = 980.6199 gals.).
 JV2830
 JV2830.The modeled gravity was interpolated from observed gravity values.
 JV2830
 JV2830;                    North         East    Units  Estimated Accuracy
 JV2830;SPC MD       -   150,960.      382,350.      MT  (+/- 180 meters Scaled)
 JV2830
 JV2830_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ092220(NAD 83)
 JV2830
 JV2830                          SUPERSEDED SURVEY CONTROL
 JV2830
 JV2830  NGVD 29 (11/26/84)  122.022  (m)          400.33   (f) ADJUSTED    2 0
 JV2830
 JV2830.Superseded values are not recommended for survey control.
 JV2830
 JV2830.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2830.See file dsdata.pdf to determine how the superseded data were derived.
 JV2830
 JV2830_MARKER: B = BOLT
 JV2830_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2830_SP_SET: HEADWALL
 JV2830_STAMPING: WSSC BM 3178
 JV2830_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2830
 JV2830  HISTORY     - Date     Condition        Report By
 JV2830  HISTORY     - UNK      MONUMENTED       WSSC
 JV2830  HISTORY     - 1965     GOOD             WSSC
 JV2830  HISTORY     - 20020314 MARK NOT FOUND   USPSQD
 JV2830
 JV2830                          STATION DESCRIPTION
 JV2830
 JV2830'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2830'0.8 MI N FROM POTOMAC.
 JV2830'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2830'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC IN THE TOP AND
 JV2830'CENTERLINE OF THE CONCRETE HEADWALL IN THE E. CORNER OF THE
 JV2830'JUNCTION OF KENTSDALE DRIVE AND A PRIVATE DRIVE LEADING S.E. TO
 JV2830'THE GARRETT PROPERTY ABOUT 450 FT. E. ALONG KENTSDALE DRIVE FROM
 JV2830'THE INTERSECTION OF FALLS ROAD, SOUTH GLEN ROAD AND KENTSDALE
 JV2830'DRIVE.
 JV2830
 JV2830                          STATION RECOVERY (2002)
 JV2830
 JV2830'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 JV2830'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2831 ***********************************************************************
 JV2831  DESIGNATION -  3179 WSSC
 JV2831  PID         -  JV2831
 JV2831  STATE/COUNTY-  MD/MONTGOMERY
 JV2831  COUNTRY     -  US
 JV2831  USGS QUAD   -  ROCKVILLE (2016)
 JV2831
 JV2831                         *CURRENT SURVEY CONTROL
 JV2831  ______________________________________________________________________
 JV2831* NAD 83(1986) POSITION- 39 01 48.     (N) 077 12 37.     (W)   SCALED
 JV2831* NAVD 88 ORTHO HEIGHT -   110.147 (meters)      361.37  (feet) ADJUSTED
 JV2831  ______________________________________________________________________
 JV2831  GEOID HEIGHT    -        -31.709 (meters)                     GEOID18
 JV2831  DYNAMIC HEIGHT  -        110.091 (meters)      361.19  (feet) COMP
 JV2831  MODELED GRAVITY -    980,109.3   (mgal)                       NAVD 88
 JV2831
 JV2831  VERT ORDER      -  SECOND    CLASS 0
 JV2831
 JV2831.The horizontal coordinates were scaled from a map and have
 JV2831.an estimated accuracy of +/- 6 seconds.
 JV2831
 JV2831.The orthometric height was determined by differential leveling and
 JV2831.adjusted by the NATIONAL GEODETIC SURVEY
 JV2831.in June 1991.
 JV2831
 JV2831.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2831.GEOID18 height accuracy estimate available here.
 JV2831
 JV2831.Click photographs - Photos may exist for this station.
 JV2831
 JV2831.The dynamic height is computed by dividing the NAVD 88
 JV2831.geopotential number by the normal gravity value computed on the
 JV2831.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2831.degrees latitude (g = 980.6199 gals.).
 JV2831
 JV2831.The modeled gravity was interpolated from observed gravity values.
 JV2831
 JV2831;                    North         East    Units  Estimated Accuracy
 JV2831;SPC MD       -   151,360.      381,790.      MT  (+/- 180 meters Scaled)
 JV2831
 JV2831_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ086224(NAD 83)
 JV2831
 JV2831                          SUPERSEDED SURVEY CONTROL
 JV2831
 JV2831  NGVD 29 (11/26/84)  110.376  (m)          362.13   (f) ADJUSTED    2 0
 JV2831
 JV2831.Superseded values are not recommended for survey control.
 JV2831
 JV2831.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2831.See file dsdata.pdf to determine how the superseded data were derived.
 JV2831
 JV2831_MARKER: B = BOLT
 JV2831_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2831_SP_SET: HEADWALL
 JV2831_STAMPING: WSSC BM 3179
 JV2831_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2831
 JV2831  HISTORY     - Date     Condition        Report By
 JV2831  HISTORY     - UNK      MONUMENTED       WSSC
 JV2831  HISTORY     - 1965     GOOD             WSSC
 JV2831
 JV2831                          STATION DESCRIPTION
 JV2831
 JV2831'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2831'1.2 MI N FROM POTOMAC.
 JV2831'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2831'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 0.5 MI. N.W.
 JV2831'ALONG SOUTH GLEN ROAD IN THE TOP AND CENTERLINE OF THE CONCRETE
 JV2831'HEADWALL IN THE N. CORNER OF THE JUNCTION WITH LOCKLAND ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2852 ***********************************************************************
 JV2852  DESIGNATION -  3180 WSSC
 JV2852  PID         -  JV2852
 JV2852  STATE/COUNTY-  MD/MONTGOMERY
 JV2852  COUNTRY     -  US
 JV2852  USGS QUAD   -  ROCKVILLE (2016)
 JV2852
 JV2852                         *CURRENT SURVEY CONTROL
 JV2852  ______________________________________________________________________
 JV2852* NAD 83(1986) POSITION- 39 01 05.     (N) 077 12 32.     (W)   SCALED
 JV2852* NAVD 88 ORTHO HEIGHT -   109.080 (meters)      357.87  (feet) ADJUSTED
 JV2852  ______________________________________________________________________
 JV2852  GEOID HEIGHT    -        -31.717 (meters)                     GEOID18
 JV2852  DYNAMIC HEIGHT  -        109.024 (meters)      357.69  (feet) COMP
 JV2852  MODELED GRAVITY -    980,108.1   (mgal)                       NAVD 88
 JV2852
 JV2852  VERT ORDER      -  SECOND    CLASS 0
 JV2852
 JV2852.The horizontal coordinates were scaled from a map and have
 JV2852.an estimated accuracy of +/- 6 seconds.
 JV2852
 JV2852.The orthometric height was determined by differential leveling and
 JV2852.adjusted by the NATIONAL GEODETIC SURVEY
 JV2852.in June 1991.
 JV2852
 JV2852.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2852.GEOID18 height accuracy estimate available here.
 JV2852
 JV2852.Click photographs - Photos may exist for this station.
 JV2852
 JV2852.The dynamic height is computed by dividing the NAVD 88
 JV2852.geopotential number by the normal gravity value computed on the
 JV2852.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2852.degrees latitude (g = 980.6199 gals.).
 JV2852
 JV2852.The modeled gravity was interpolated from observed gravity values.
 JV2852
 JV2852;                    North         East    Units  Estimated Accuracy
 JV2852;SPC MD       -   150,030.      381,910.      MT  (+/- 180 meters Scaled)
 JV2852
 JV2852_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ087211(NAD 83)
 JV2852
 JV2852                          SUPERSEDED SURVEY CONTROL
 JV2852
 JV2852  NGVD 29 (11/26/84)  109.312  (m)          358.63   (f) ADJUSTED    2 0
 JV2852
 JV2852.Superseded values are not recommended for survey control.
 JV2852
 JV2852.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2852.See file dsdata.pdf to determine how the superseded data were derived.
 JV2852
 JV2852_MARKER: B = BOLT
 JV2852_SETTING: 0 = UNSPECIFIED SETTING
 JV2852_STAMPING: WSSC BM 3180
 JV2852_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2852
 JV2852  HISTORY     - Date     Condition        Report By
 JV2852  HISTORY     - UNK      MONUMENTED       WSSC
 JV2852  HISTORY     - 1965     GOOD             WSSC
 JV2852  HISTORY     - 20020314 MARK NOT FOUND   USPSQD
 JV2852
 JV2852                          STATION DESCRIPTION
 JV2852
 JV2852'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2852'AT POTOMAC.
 JV2852'IN THE N.W. END OF THE ESSD GAS PUMP ISLAND IN THE N.E. CORNER
 JV2852'OF THE INTERSECTION OF STATE ROAD 190 (RIVER ROAD) AND STATE HWY.
 JV2852'189 (FALLS ROAD) AT POTOMAC.
 JV2852
 JV2852                          STATION RECOVERY (2002)
 JV2852
 JV2852'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 JV2852'ESSO (EXXON) STATION REBUILT- NEW PUMPS AND ISLANDS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2833 ***********************************************************************
 JV2833  DESIGNATION -  3181 WSSC
 JV2833  PID         -  JV2833
 JV2833  STATE/COUNTY-  MD/MONTGOMERY
 JV2833  COUNTRY     -  US
 JV2833  USGS QUAD   -  ROCKVILLE (2016)
 JV2833
 JV2833                         *CURRENT SURVEY CONTROL
 JV2833  ______________________________________________________________________
 JV2833* NAD 83(1986) POSITION- 39 02 23.     (N) 077 13 01.     (W)   SCALED
 JV2833* NAVD 88 ORTHO HEIGHT -   113.814 (meters)      373.40  (feet) ADJUSTED
 JV2833  ______________________________________________________________________
 JV2833  GEOID HEIGHT    -        -31.704 (meters)                     GEOID18
 JV2833  DYNAMIC HEIGHT  -        113.756 (meters)      373.21  (feet) COMP
 JV2833  MODELED GRAVITY -    980,110.3   (mgal)                       NAVD 88
 JV2833
 JV2833  VERT ORDER      -  SECOND    CLASS 0
 JV2833
 JV2833.The horizontal coordinates were scaled from a map and have
 JV2833.an estimated accuracy of +/- 6 seconds.
 JV2833
 JV2833.The orthometric height was determined by differential leveling and
 JV2833.adjusted by the NATIONAL GEODETIC SURVEY
 JV2833.in June 1991.
 JV2833
 JV2833.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2833.GEOID18 height accuracy estimate available here.
 JV2833
 JV2833.Click photographs - Photos may exist for this station.
 JV2833
 JV2833.The dynamic height is computed by dividing the NAVD 88
 JV2833.geopotential number by the normal gravity value computed on the
 JV2833.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2833.degrees latitude (g = 980.6199 gals.).
 JV2833
 JV2833.The modeled gravity was interpolated from observed gravity values.
 JV2833
 JV2833;                    North         East    Units  Estimated Accuracy
 JV2833;SPC MD       -   152,440.      381,220.      MT  (+/- 180 meters Scaled)
 JV2833
 JV2833_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ081235(NAD 83)
 JV2833
 JV2833                          SUPERSEDED SURVEY CONTROL
 JV2833
 JV2833  NGVD 29 (11/26/84)  114.043  (m)          374.16   (f) ADJUSTED    2 0
 JV2833
 JV2833.Superseded values are not recommended for survey control.
 JV2833
 JV2833.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2833.See file dsdata.pdf to determine how the superseded data were derived.
 JV2833
 JV2833_MARKER: B = BOLT
 JV2833_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2833_SP_SET: TREE
 JV2833_STAMPING: WSSC BM 3181
 JV2833_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2833
 JV2833  HISTORY     - Date     Condition        Report By
 JV2833  HISTORY     - UNK      MONUMENTED       WSSC
 JV2833  HISTORY     - 1965     GOOD             WSSC
 JV2833
 JV2833                          STATION DESCRIPTION
 JV2833
 JV2833'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2833'2 MI N FROM POTOMAC.
 JV2833'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2833'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 1.3 MI. N.W.
 JV2833'ALONG SOUTH GLEN ROAD IN W. ROOT OF A 28 INCH TWIN MAPLE TREE IN
 JV2833'THE SEMI-CIRCLE ON THE W. SIDE OF SOUTH GLEN ROAD FORMED BY THE
 JV2833'ROAD AND CIRCLE DRIVE LEADING TO C.V. LITTLES BRICK HOUSE ON
 JV2833'ROCKING HORSE FARM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2821 ***********************************************************************
 JV2821  DESIGNATION -  3182 WSSC
 JV2821  PID         -  JV2821
 JV2821  STATE/COUNTY-  MD/MONTGOMERY
 JV2821  COUNTRY     -  US
 JV2821  USGS QUAD   -  ROCKVILLE (2016)
 JV2821
 JV2821                         *CURRENT SURVEY CONTROL
 JV2821  ______________________________________________________________________
 JV2821* NAD 83(1986) POSITION- 39 02 45.     (N) 077 13 02.     (W)   SCALED
 JV2821* NAVD 88 ORTHO HEIGHT -    77.666 (meters)      254.81  (feet) ADJUSTED
 JV2821  ______________________________________________________________________
 JV2821  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV2821  DYNAMIC HEIGHT  -         77.626 (meters)      254.68  (feet) COMP
 JV2821  MODELED GRAVITY -    980,110.5   (mgal)                       NAVD 88
 JV2821
 JV2821  VERT ORDER      -  SECOND    CLASS 0
 JV2821
 JV2821.The horizontal coordinates were scaled from a map and have
 JV2821.an estimated accuracy of +/- 6 seconds.
 JV2821
 JV2821.The orthometric height was determined by differential leveling and
 JV2821.adjusted by the NATIONAL GEODETIC SURVEY
 JV2821.in June 1991.
 JV2821
 JV2821.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2821.GEOID18 height accuracy estimate available here.
 JV2821
 JV2821.Click photographs - Photos may exist for this station.
 JV2821
 JV2821.The dynamic height is computed by dividing the NAVD 88
 JV2821.geopotential number by the normal gravity value computed on the
 JV2821.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2821.degrees latitude (g = 980.6199 gals.).
 JV2821
 JV2821.The modeled gravity was interpolated from observed gravity values.
 JV2821
 JV2821;                    North         East    Units  Estimated Accuracy
 JV2821;SPC MD       -   153,120.      381,200.      MT  (+/- 180 meters Scaled)
 JV2821
 JV2821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ081242(NAD 83)
 JV2821
 JV2821                          SUPERSEDED SURVEY CONTROL
 JV2821
 JV2821  NGVD 29 (11/26/84)   77.893  (m)          255.55   (f) ADJUSTED    2 0
 JV2821
 JV2821.Superseded values are not recommended for survey control.
 JV2821
 JV2821.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2821.See file dsdata.pdf to determine how the superseded data were derived.
 JV2821
 JV2821_MARKER: B = BOLT
 JV2821_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2821_SP_SET: BRIDGE
 JV2821_STAMPING: WSSC BM 3182
 JV2821_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2821
 JV2821  HISTORY     - Date     Condition        Report By
 JV2821  HISTORY     - UNK      MONUMENTED       WSSC
 JV2821  HISTORY     - 1965     GOOD             WSSC
 JV2821
 JV2821                          STATION DESCRIPTION
 JV2821
 JV2821'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2821'2.4 MI NW FROM POTOMAC.
 JV2821'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2821'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC THENCE 1.7 MI. N.W.
 JV2821'ALONG SOUTH GLEN ROAD, THENCE 50 FEET N. ALONG GLEN ROAD.  IN THE
 JV2821'TOP AND CENTER LINE OF THE S. CONCRETE SUPPORT OF BRIDGE OVER
 JV2821'KILGOUR BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2834 ***********************************************************************
 JV2834  DESIGNATION -  3183 WSSC
 JV2834  PID         -  JV2834
 JV2834  STATE/COUNTY-  MD/MONTGOMERY
 JV2834  COUNTRY     -  US
 JV2834  USGS QUAD   -  ROCKVILLE (2016)
 JV2834
 JV2834                         *CURRENT SURVEY CONTROL
 JV2834  ______________________________________________________________________
 JV2834* NAD 83(1986) POSITION- 39 02 48.     (N) 077 12 39.     (W)   SCALED
 JV2834* NAVD 88 ORTHO HEIGHT -   100.081 (meters)      328.35  (feet) ADJUSTED
 JV2834  ______________________________________________________________________
 JV2834  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV2834  DYNAMIC HEIGHT  -        100.030 (meters)      328.18  (feet) COMP
 JV2834  MODELED GRAVITY -    980,110.3   (mgal)                       NAVD 88
 JV2834
 JV2834  VERT ORDER      -  SECOND    CLASS 0
 JV2834
 JV2834.The horizontal coordinates were scaled from a map and have
 JV2834.an estimated accuracy of +/- 6 seconds.
 JV2834
 JV2834.The orthometric height was determined by differential leveling and
 JV2834.adjusted by the NATIONAL GEODETIC SURVEY
 JV2834.in June 1991.
 JV2834
 JV2834.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2834.GEOID18 height accuracy estimate available here.
 JV2834
 JV2834.Click photographs - Photos may exist for this station.
 JV2834
 JV2834.The dynamic height is computed by dividing the NAVD 88
 JV2834.geopotential number by the normal gravity value computed on the
 JV2834.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2834.degrees latitude (g = 980.6199 gals.).
 JV2834
 JV2834.The modeled gravity was interpolated from observed gravity values.
 JV2834
 JV2834;                    North         East    Units  Estimated Accuracy
 JV2834;SPC MD       -   153,210.      381,750.      MT  (+/- 180 meters Scaled)
 JV2834
 JV2834_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ086242(NAD 83)
 JV2834
 JV2834                          SUPERSEDED SURVEY CONTROL
 JV2834
 JV2834  NGVD 29 (11/26/84)  100.309  (m)          329.10   (f) ADJUSTED    2 0
 JV2834
 JV2834.Superseded values are not recommended for survey control.
 JV2834
 JV2834.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2834.See file dsdata.pdf to determine how the superseded data were derived.
 JV2834
 JV2834_MARKER: B = BOLT
 JV2834_SETTING: 0 = UNSPECIFIED SETTING
 JV2834_SP_SET: IRON PIPE
 JV2834_STAMPING: WSSC BM 3183
 JV2834_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2834
 JV2834  HISTORY     - Date     Condition        Report By
 JV2834  HISTORY     - UNK      MONUMENTED       WSSC
 JV2834  HISTORY     - 1965     GOOD             WSSC
 JV2834
 JV2834                          STATION DESCRIPTION
 JV2834
 JV2834'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2834'3 MI N FROM POTOMAC.
 JV2834'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2834'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 1.8 MI. N.W.
 JV2834'ALONG SOUTH GLEN ROAD, THENCE 0.4 MI. E. ALONG GLEN ROAD IN THE
 JV2834'S.W. CORNER OF THE JUNCTION OF A PRIVATE ROAD LEADING TO 10220
 JV2834'GLEN RD. 60.8 FT. S.W. OF A 8 INCH WALNUT TREE 60.2 FT. S.W. OF
 JV2834'A 12 INCH OAK TREE, 41.8 FT. S. OF POLE 621545 AND 14.69 FT. S.E.
 JV2834'OF A GUY POLE IN AN IRON PIPE 0.2 FT. BELOW THE SURFACE OF THE
 JV2834'GROUND.  BENCH MARK MAY ALSO BE REACHED BY GOING 2.5 MI. N.
 JV2834'ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION WITH
 JV2834'STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 1.1 MI. E. ALONG
 JV2834'GLEN ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2835 ***********************************************************************
 JV2835  DESIGNATION -  3184 WSSC
 JV2835  PID         -  JV2835
 JV2835  STATE/COUNTY-  MD/MONTGOMERY
 JV2835  COUNTRY     -  US
 JV2835  USGS QUAD   -  ROCKVILLE (2016)
 JV2835
 JV2835                         *CURRENT SURVEY CONTROL
 JV2835  ______________________________________________________________________
 JV2835* NAD 83(1986) POSITION- 39 02 48.     (N) 077 12 09.     (W)   SCALED
 JV2835* NAVD 88 ORTHO HEIGHT -   113.147 (meters)      371.22  (feet) ADJUSTED
 JV2835  ______________________________________________________________________
 JV2835  GEOID HEIGHT    -        -31.705 (meters)                     GEOID18
 JV2835  DYNAMIC HEIGHT  -        113.089 (meters)      371.03  (feet) COMP
 JV2835  MODELED GRAVITY -    980,109.8   (mgal)                       NAVD 88
 JV2835
 JV2835  VERT ORDER      -  SECOND    CLASS 0
 JV2835
 JV2835.The horizontal coordinates were scaled from a map and have
 JV2835.an estimated accuracy of +/- 6 seconds.
 JV2835
 JV2835.The orthometric height was determined by differential leveling and
 JV2835.adjusted by the NATIONAL GEODETIC SURVEY
 JV2835.in June 1991.
 JV2835
 JV2835.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2835.GEOID18 height accuracy estimate available here.
 JV2835
 JV2835.Click photographs - Photos may exist for this station.
 JV2835
 JV2835.The dynamic height is computed by dividing the NAVD 88
 JV2835.geopotential number by the normal gravity value computed on the
 JV2835.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2835.degrees latitude (g = 980.6199 gals.).
 JV2835
 JV2835.The modeled gravity was interpolated from observed gravity values.
 JV2835
 JV2835;                    North         East    Units  Estimated Accuracy
 JV2835;SPC MD       -   153,210.      382,470.      MT  (+/- 180 meters Scaled)
 JV2835
 JV2835_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ093242(NAD 83)
 JV2835
 JV2835                          SUPERSEDED SURVEY CONTROL
 JV2835
 JV2835  NGVD 29 (11/26/84)  113.374  (m)          371.96   (f) ADJUSTED    2 0
 JV2835
 JV2835.Superseded values are not recommended for survey control.
 JV2835
 JV2835.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2835.See file dsdata.pdf to determine how the superseded data were derived.
 JV2835
 JV2835_MARKER: B = BOLT
 JV2835_SETTING: 0 = UNSPECIFIED SETTING
 JV2835_STAMPING: WSSC BM 3184
 JV2835_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2835
 JV2835  HISTORY     - Date     Condition        Report By
 JV2835  HISTORY     - UNK      MONUMENTED       WSSC
 JV2835  HISTORY     - 1965     GOOD             WSSC
 JV2835
 JV2835                          STATION DESCRIPTION
 JV2835
 JV2835'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2835'3.2 MI N FROM POTOMAC.
 JV2835'2.5 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2835'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 0.7 MI. W.
 JV2835'ALONG GLEN ROAD IN THE N.W. CORNER OF THE CELLAR WELL IN REAR
 JV2835'OF HOUSE 9831 ON PROPERTY OF V. STICKLEY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2836 ***********************************************************************
 JV2836  DESIGNATION -  3185 WSSC
 JV2836  PID         -  JV2836
 JV2836  STATE/COUNTY-  MD/MONTGOMERY
 JV2836  COUNTRY     -  US
 JV2836  USGS QUAD   -  ROCKVILLE (2016)
 JV2836
 JV2836                         *CURRENT SURVEY CONTROL
 JV2836  ______________________________________________________________________
 JV2836* NAD 83(1986) POSITION- 39 02 48.     (N) 077 11 37.     (W)   SCALED
 JV2836* NAVD 88 ORTHO HEIGHT -   127.937 (meters)      419.74  (feet) ADJUSTED
 JV2836  ______________________________________________________________________
 JV2836  GEOID HEIGHT    -        -31.709 (meters)                     GEOID18
 JV2836  DYNAMIC HEIGHT  -        127.871 (meters)      419.52  (feet) COMP
 JV2836  MODELED GRAVITY -    980,108.7   (mgal)                       NAVD 88
 JV2836
 JV2836  VERT ORDER      -  SECOND    CLASS 0
 JV2836
 JV2836.The horizontal coordinates were scaled from a map and have
 JV2836.an estimated accuracy of +/- 6 seconds.
 JV2836
 JV2836.The orthometric height was determined by differential leveling and
 JV2836.adjusted by the NATIONAL GEODETIC SURVEY
 JV2836.in June 1991.
 JV2836
 JV2836.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2836.GEOID18 height accuracy estimate available here.
 JV2836
 JV2836.Click photographs - Photos may exist for this station.
 JV2836
 JV2836.The dynamic height is computed by dividing the NAVD 88
 JV2836.geopotential number by the normal gravity value computed on the
 JV2836.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2836.degrees latitude (g = 980.6199 gals.).
 JV2836
 JV2836.The modeled gravity was interpolated from observed gravity values.
 JV2836
 JV2836;                    North         East    Units  Estimated Accuracy
 JV2836;SPC MD       -   153,200.      383,240.      MT  (+/- 180 meters Scaled)
 JV2836
 JV2836_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ101242(NAD 83)
 JV2836
 JV2836                          SUPERSEDED SURVEY CONTROL
 JV2836
 JV2836  NGVD 29 (11/26/84)  128.163  (m)          420.48   (f) ADJUSTED    2 0
 JV2836
 JV2836.Superseded values are not recommended for survey control.
 JV2836
 JV2836.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2836.See file dsdata.pdf to determine how the superseded data were derived.
 JV2836
 JV2836_MARKER: B = BOLT
 JV2836_SETTING: 0 = UNSPECIFIED SETTING
 JV2836_SP_SET: IRON PIPE
 JV2836_STAMPING: WSSC BM 3185
 JV2836_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2836
 JV2836  HISTORY     - Date     Condition        Report By
 JV2836  HISTORY     - UNK      MONUMENTED       WSSC
 JV2836  HISTORY     - 1965     GOOD             WSSC
 JV2836
 JV2836                          STATION DESCRIPTION
 JV2836
 JV2836'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2836'AT POTOMAC.
 JV2836'2.5 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2836'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 0.15 MI. W.
 JV2836'ALONG GLEN ROAD, 37.3 FT. E. OF A 12 INCH MAPLE TREE, 25.8 FT. S.
 JV2836'OF C AND P POLE 4 AND 2.3 FT. N.W. OF PEPCO POLE 620298 JUST E. OF
 JV2836'A GRAVEL ROAD LEADING TO 9308 GLEN ROAD IN AN IRON PIPE LEVEL WITH
 JV2836'THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2825 ***********************************************************************
 JV2825  DESIGNATION -  3186 WSSC
 JV2825  PID         -  JV2825
 JV2825  STATE/COUNTY-  MD/MONTGOMERY
 JV2825  COUNTRY     -  US
 JV2825  USGS QUAD   -  ROCKVILLE (2016)
 JV2825
 JV2825                         *CURRENT SURVEY CONTROL
 JV2825  ______________________________________________________________________
 JV2825* NAD 83(1986) POSITION- 39 02 50.     (N) 077 13 35.     (W)   SCALED
 JV2825* NAVD 88 ORTHO HEIGHT -    73.624 (meters)      241.55  (feet) ADJUSTED
 JV2825  ______________________________________________________________________
 JV2825  GEOID HEIGHT    -        -31.704 (meters)                     GEOID18
 JV2825  DYNAMIC HEIGHT  -         73.586 (meters)      241.42  (feet) COMP
 JV2825  MODELED GRAVITY -    980,110.6   (mgal)                       NAVD 88
 JV2825
 JV2825  VERT ORDER      -  SECOND    CLASS 0
 JV2825
 JV2825.The horizontal coordinates were scaled from a map and have
 JV2825.an estimated accuracy of +/- 6 seconds.
 JV2825
 JV2825.The orthometric height was determined by differential leveling and
 JV2825.adjusted by the NATIONAL GEODETIC SURVEY
 JV2825.in June 1991.
 JV2825
 JV2825.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2825.GEOID18 height accuracy estimate available here.
 JV2825
 JV2825.Click photographs - Photos may exist for this station.
 JV2825
 JV2825.The dynamic height is computed by dividing the NAVD 88
 JV2825.geopotential number by the normal gravity value computed on the
 JV2825.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2825.degrees latitude (g = 980.6199 gals.).
 JV2825
 JV2825.The modeled gravity was interpolated from observed gravity values.
 JV2825
 JV2825;                    North         East    Units  Estimated Accuracy
 JV2825;SPC MD       -   153,270.      380,400.      MT  (+/- 180 meters Scaled)
 JV2825
 JV2825_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ073243(NAD 83)
 JV2825
 JV2825                          SUPERSEDED SURVEY CONTROL
 JV2825
 JV2825  NGVD 29 (11/26/84)   73.851  (m)          242.29   (f) ADJUSTED    2 0
 JV2825
 JV2825.Superseded values are not recommended for survey control.
 JV2825
 JV2825.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2825.See file dsdata.pdf to determine how the superseded data were derived.
 JV2825
 JV2825_MARKER: B = BOLT
 JV2825_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2825_SP_SET: BRIDGE
 JV2825_STAMPING: WSSC BM 3186
 JV2825_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2825
 JV2825  HISTORY     - Date     Condition        Report By
 JV2825  HISTORY     - UNK      MONUMENTED       WSSC
 JV2825  HISTORY     - 1965     GOOD             WSSC
 JV2825
 JV2825                          STATION DESCRIPTION
 JV2825
 JV2825'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2825'3 MI NW FROM POTOMAC.
 JV2825'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2825'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 1.7 MI.
 JV2825'N.W. ALONG SOUTH GLEN ROAD, THENCE 0.55 MI. W. ALONG GLEN ROAD,
 JV2825'0.35 MI. E. OF THE JUNCTION WITH PINEY MEETINGHOUSE ROAD, IN THE
 JV2825'TOP AND CENTER LINE OF THE S. SIDE OF THE CONCRETE BRIDGE OVER
 JV2825'PINEY BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2827 ***********************************************************************
 JV2827  DESIGNATION -  3187 WSSC
 JV2827  PID         -  JV2827
 JV2827  STATE/COUNTY-  MD/MONTGOMERY
 JV2827  COUNTRY     -  US
 JV2827  USGS QUAD   -  ROCKVILLE (2016)
 JV2827
 JV2827                         *CURRENT SURVEY CONTROL
 JV2827  ______________________________________________________________________
 JV2827* NAD 83(1986) POSITION- 39 02 55.     (N) 077 13 59.     (W)   SCALED
 JV2827* NAVD 88 ORTHO HEIGHT -    97.250 (meters)      319.06  (feet) ADJUSTED
 JV2827  ______________________________________________________________________
 JV2827  GEOID HEIGHT    -        -31.706 (meters)                     GEOID18
 JV2827  DYNAMIC HEIGHT  -         97.199 (meters)      318.89  (feet) COMP
 JV2827  MODELED GRAVITY -    980,110.4   (mgal)                       NAVD 88
 JV2827
 JV2827  VERT ORDER      -  SECOND    CLASS 0
 JV2827
 JV2827.The horizontal coordinates were scaled from a map and have
 JV2827.an estimated accuracy of +/- 6 seconds.
 JV2827
 JV2827.The orthometric height was determined by differential leveling and
 JV2827.adjusted by the NATIONAL GEODETIC SURVEY
 JV2827.in June 1991.
 JV2827
 JV2827.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2827.GEOID18 height accuracy estimate available here.
 JV2827
 JV2827.Click photographs - Photos may exist for this station.
 JV2827
 JV2827.The dynamic height is computed by dividing the NAVD 88
 JV2827.geopotential number by the normal gravity value computed on the
 JV2827.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2827.degrees latitude (g = 980.6199 gals.).
 JV2827
 JV2827.The modeled gravity was interpolated from observed gravity values.
 JV2827
 JV2827;                    North         East    Units  Estimated Accuracy
 JV2827;SPC MD       -   153,430.      379,830.      MT  (+/- 180 meters Scaled)
 JV2827
 JV2827_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ067245(NAD 83)
 JV2827
 JV2827                          SUPERSEDED SURVEY CONTROL
 JV2827
 JV2827  NGVD 29 (11/26/84)   97.477  (m)          319.81   (f) ADJUSTED    2 0
 JV2827
 JV2827.Superseded values are not recommended for survey control.
 JV2827
 JV2827.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2827.See file dsdata.pdf to determine how the superseded data were derived.
 JV2827
 JV2827_MARKER: B = BOLT
 JV2827_SETTING: 0 = UNSPECIFIED SETTING
 JV2827_SP_SET: IRON PIPE
 JV2827_STAMPING: WSSC BM 3187
 JV2827_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2827
 JV2827  HISTORY     - Date     Condition        Report By
 JV2827  HISTORY     - UNK      MONUMENTED       WSSC
 JV2827  HISTORY     - 1965     GOOD             WSSC
 JV2827
 JV2827                          STATION DESCRIPTION
 JV2827
 JV2827'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2827'3.4 MI NW FROM POTOMAC.
 JV2827'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2827'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 1.7 MI. N.W.
 JV2827'ALONG SOUTH GLEN ROAD, THENCE 0.90 MI. W. ALONG GLEN ROAD.  AT
 JV2827'THE N.W. CORNER OF THE INTERSECTION WITH PINEY MEETINGHOUSE ROAD.
 JV2827'41.9 FT. N. ACROSS GLEN RD. FROM A 24 INCH LOCUST, 20.7 FT. S.
 JV2827'OF A FENCE CORNER, 11.7 FT. N.W. OF ANOTHER FENCE CORNER AND
 JV2827'20.2 FT. N.W. OF A 30 INCH TREE IN AN IRON PIPE LEVEL WITH THE
 JV2827'SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2828 ***********************************************************************
 JV2828  DESIGNATION -  3188 WSSC
 JV2828  PID         -  JV2828
 JV2828  STATE/COUNTY-  MD/MONTGOMERY
 JV2828  COUNTRY     -  US
 JV2828  USGS QUAD   -  ROCKVILLE (2016)
 JV2828
 JV2828                         *CURRENT SURVEY CONTROL
 JV2828  ______________________________________________________________________
 JV2828* NAD 83(1986) POSITION- 39 02 28.     (N) 077 14 02.     (W)   SCALED
 JV2828* NAVD 88 ORTHO HEIGHT -    67.238 (meters)      220.60  (feet) ADJUSTED
 JV2828  ______________________________________________________________________
 JV2828  GEOID HEIGHT    -        -31.707 (meters)                     GEOID18
 JV2828  DYNAMIC HEIGHT  -         67.203 (meters)      220.48  (feet) COMP
 JV2828  MODELED GRAVITY -    980,110.7   (mgal)                       NAVD 88
 JV2828
 JV2828  VERT ORDER      -  SECOND    CLASS 0
 JV2828
 JV2828.The horizontal coordinates were scaled from a map and have
 JV2828.an estimated accuracy of +/- 6 seconds.
 JV2828
 JV2828.The orthometric height was determined by differential leveling and
 JV2828.adjusted by the NATIONAL GEODETIC SURVEY
 JV2828.in June 1991.
 JV2828
 JV2828.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2828.GEOID18 height accuracy estimate available here.
 JV2828
 JV2828.Click photographs - Photos may exist for this station.
 JV2828
 JV2828.The dynamic height is computed by dividing the NAVD 88
 JV2828.geopotential number by the normal gravity value computed on the
 JV2828.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2828.degrees latitude (g = 980.6199 gals.).
 JV2828
 JV2828.The modeled gravity was interpolated from observed gravity values.
 JV2828
 JV2828;                    North         East    Units  Estimated Accuracy
 JV2828;SPC MD       -   152,600.      379,750.      MT  (+/- 180 meters Scaled)
 JV2828
 JV2828_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ066237(NAD 83)
 JV2828
 JV2828                          SUPERSEDED SURVEY CONTROL
 JV2828
 JV2828  NGVD 29 (11/26/84)   67.466  (m)          221.34   (f) ADJUSTED    2 0
 JV2828
 JV2828.Superseded values are not recommended for survey control.
 JV2828
 JV2828.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2828.See file dsdata.pdf to determine how the superseded data were derived.
 JV2828
 JV2828_MARKER: B = BOLT
 JV2828_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2828_SP_SET: BRIDGE
 JV2828_STAMPING: WSSC BM 3188
 JV2828_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2828
 JV2828  HISTORY     - Date     Condition        Report By
 JV2828  HISTORY     - UNK      MONUMENTED       WSSC
 JV2828  HISTORY     - 1965     GOOD             WSSC
 JV2828
 JV2828                          STATION DESCRIPTION
 JV2828
 JV2828'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2828'2.4 MI NW FROM POTOMAC.
 JV2828'1.7 MI. N.W. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2828'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC, THENCE 0.7 MI. N.
 JV2828'ALONG PINEY MEETINGHOUSE ROAD, (0.5 MI. S. OF BENCH MARK 3187
 JV2828'(WSSC) DESCRIBED ABOVE) IN THE TOP AND CENTERLINE OF THE E.
 JV2828'HEADWALL OF THE CONCRETE BRIDGE OVER WATTS BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2829 ***********************************************************************
 JV2829  DESIGNATION -  3189 WSSC
 JV2829  PID         -  JV2829
 JV2829  STATE/COUNTY-  MD/MONTGOMERY
 JV2829  COUNTRY     -  US
 JV2829  USGS QUAD   -  ROCKVILLE (2016)
 JV2829
 JV2829                         *CURRENT SURVEY CONTROL
 JV2829  ______________________________________________________________________
 JV2829* NAD 83(1986) POSITION- 39 02 08.59   (N) 077 14 00.56   (W)   HD_HELD1
 JV2829* NAVD 88 ORTHO HEIGHT -    90.804 (meters)      297.91  (feet) ADJUSTED
 JV2829  ______________________________________________________________________
 JV2829  GEOID HEIGHT    -        -31.707 (meters)                     GEOID18
 JV2829  DYNAMIC HEIGHT  -         90.757 (meters)      297.76  (feet) COMP
 JV2829  MODELED GRAVITY -    980,110.8   (mgal)                       NAVD 88
 JV2829
 JV2829  VERT ORDER      -  SECOND    CLASS 0
 JV2829
 JV2829.The horizontal coordinates were determined by differentially corrected
 JV2829.hand held GPS observations or other comparable positioning techniques
 JV2829.and have an estimated accuracy of +/- 3 meters.
 JV2829
 JV2829.The orthometric height was determined by differential leveling and
 JV2829.adjusted by the NATIONAL GEODETIC SURVEY
 JV2829.in June 1991.
 JV2829
 JV2829.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2829.GEOID18 height accuracy estimate available here.
 JV2829
 JV2829.Click photographs - Photos may exist for this station.
 JV2829
 JV2829.The dynamic height is computed by dividing the NAVD 88
 JV2829.geopotential number by the normal gravity value computed on the
 JV2829.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2829.degrees latitude (g = 980.6199 gals.).
 JV2829
 JV2829.The modeled gravity was interpolated from observed gravity values.
 JV2829
 JV2829;                    North         East    Units  Estimated Accuracy
 JV2829;SPC MD       -   151,997.3     379,784.8     MT  (+/- 3 meters HH1 GPS) 
 JV2829
 JV2829_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0668523114(NAD 83)
 JV2829
 JV2829                          SUPERSEDED SURVEY CONTROL
 JV2829
 JV2829  NGVD 29 (11/26/84)   91.033  (m)          298.66   (f) ADJUSTED    2 0
 JV2829
 JV2829.Superseded values are not recommended for survey control.
 JV2829
 JV2829.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2829.See file dsdata.pdf to determine how the superseded data were derived.
 JV2829
 JV2829_MARKER: B = BOLT
 JV2829_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2829_SP_SET: HEADWALL
 JV2829_STAMPING: WSSC BM 3189
 JV2829_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2829
 JV2829  HISTORY     - Date     Condition        Report By
 JV2829  HISTORY     - UNK      MONUMENTED       WSSC
 JV2829  HISTORY     - 1965     GOOD             WSSC
 JV2829
 JV2829                          STATION DESCRIPTION
 JV2829
 JV2829'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2829'2 MI NW FROM POTOMAC.
 JV2829'1.7 MI. N.W. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS INTERSECTION
 JV2829'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC, THENCE 0.3 MI. N.
 JV2829'ALONG PINEY MEETINGHOUSE ROAD IN THE TOP AND CENTERLINE OF
 JV2829'EASTERNMOST CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2693 ***********************************************************************
 JV2693  DESIGNATION -  319 WSSC
 JV2693  PID         -  JV2693
 JV2693  STATE/COUNTY-  MD/MONTGOMERY
 JV2693  COUNTRY     -  US
 JV2693  USGS QUAD   -  KENSINGTON (2016)
 JV2693
 JV2693                         *CURRENT SURVEY CONTROL
 JV2693  ______________________________________________________________________
 JV2693* NAD 83(1986) POSITION- 39 02 07.     (N) 077 03 55.     (W)   SCALED
 JV2693* NAVD 88 ORTHO HEIGHT -   111.51  (+/-2cm)      365.8   (feet) VERTCON3
 JV2693  ______________________________________________________________________
 JV2693  GEOID HEIGHT    -        -31.884 (meters)                     GEOID18
 JV2693  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2693
 JV2693.The horizontal coordinates were scaled from a map and have
 JV2693.an estimated accuracy of +/- 6 seconds.
 JV2693
 JV2693.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2693.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2693
 JV2693.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2693.GEOID18 height accuracy estimate available here.
 JV2693
 JV2693.The vertical order pertains to the NGVD 29 superseded value.
 JV2693
 JV2693.Click photographs - Photos may exist for this station.
 JV2693
 JV2693;                    North         East    Units  Estimated Accuracy
 JV2693;SPC MD       -   151,920.      394,350.      MT  (+/- 180 meters Scaled)
 JV2693
 JV2693_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ212227(NAD 83)
 JV2693
 JV2693                          SUPERSEDED SURVEY CONTROL
 JV2693
 JV2693  NGVD 29 (11/26/84)  111.733  (m)          366.58   (f) ADJUSTED    2 0
 JV2693
 JV2693.Superseded values are not recommended for survey control.
 JV2693
 JV2693.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2693.See file dsdata.pdf to determine how the superseded data were derived.
 JV2693
 JV2693_MARKER: Q = CHISELED SQUARE
 JV2693_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2693_SP_SET: WALKWAY
 JV2693_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2693
 JV2693  HISTORY     - Date     Condition        Report By
 JV2693  HISTORY     - UNK      MONUMENTED       WSSC
 JV2693  HISTORY     - 1944     GOOD             CGS
 JV2693  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV2693
 JV2693                          STATION DESCRIPTION
 JV2693
 JV2693'DESCRIBED BY COAST AND GEODETIC SURVEY 1944
 JV2693'0.8 MI W FROM WHEATON.
 JV2693'ABOUT 3/4 MILE NORTHEAST OF KENSINGTON, ON THE KENSINGTON-WHEATON
 JV2693'ROAD, BETWEEN P.E.P. CO. POLES 71907 AND 71908, ON THE NORTHWEST
 JV2693'SIDE OF THE ROAD, AT A WALK LEADING TO A GRAY HOUSE, AND ON THE
 JV2693'NORTHEAST END OF THE WALK.
 JV2693
 JV2693                          STATION RECOVERY (1951)
 JV2693
 JV2693'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV2693'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2858 ***********************************************************************
 JV2858  DESIGNATION -  3190 WSSC
 JV2858  PID         -  JV2858
 JV2858  STATE/COUNTY-  MD/MONTGOMERY
 JV2858  COUNTRY     -  US
 JV2858  USGS QUAD   -  ROCKVILLE (2016)
 JV2858
 JV2858                         *CURRENT SURVEY CONTROL
 JV2858  ______________________________________________________________________
 JV2858* NAD 83(1986) POSITION- 39 05 30.     (N) 077 11 39.     (W)   SCALED
 JV2858* NAVD 88 ORTHO HEIGHT -   132.343 (meters)      434.20  (feet) ADJUSTED
 JV2858  ______________________________________________________________________
 JV2858  GEOID HEIGHT    -        -31.705 (meters)                     GEOID18
 JV2858  DYNAMIC HEIGHT  -        132.274 (meters)      433.97  (feet) COMP
 JV2858  MODELED GRAVITY -    980,105.0   (mgal)                       NAVD 88
 JV2858
 JV2858  VERT ORDER      -  SECOND    CLASS 0
 JV2858
 JV2858.The horizontal coordinates were scaled from a map and have
 JV2858.an estimated accuracy of +/- 6 seconds.
 JV2858
 JV2858.The orthometric height was determined by differential leveling and
 JV2858.adjusted by the NATIONAL GEODETIC SURVEY
 JV2858.in June 1991.
 JV2858
 JV2858.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2858.GEOID18 height accuracy estimate available here.
 JV2858
 JV2858.Click photographs - Photos may exist for this station.
 JV2858
 JV2858.The dynamic height is computed by dividing the NAVD 88
 JV2858.geopotential number by the normal gravity value computed on the
 JV2858.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2858.degrees latitude (g = 980.6199 gals.).
 JV2858
 JV2858.The modeled gravity was interpolated from observed gravity values.
 JV2858
 JV2858;                    North         East    Units  Estimated Accuracy
 JV2858;SPC MD       -   158,200.      383,200.      MT  (+/- 180 meters Scaled)
 JV2858
 JV2858_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ102292(NAD 83)
 JV2858
 JV2858                          SUPERSEDED SURVEY CONTROL
 JV2858
 JV2858  NGVD 29 (11/26/84)  132.567  (m)          434.93   (f) ADJUSTED    2 0
 JV2858
 JV2858.Superseded values are not recommended for survey control.
 JV2858
 JV2858.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2858.See file dsdata.pdf to determine how the superseded data were derived.
 JV2858
 JV2858_MARKER: B = BOLT
 JV2858_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2858_SP_SET: HEADWALL
 JV2858_STAMPING: WSSC BM 3190
 JV2858_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2858
 JV2858  HISTORY     - Date     Condition        Report By
 JV2858  HISTORY     - UNK      MONUMENTED       WSSC
 JV2858  HISTORY     - 1965     GOOD             WSSC
 JV2858
 JV2858                          STATION DESCRIPTION
 JV2858
 JV2858'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2858'2.6 MI W FROM ROCKVILLE.
 JV2858'2.5 MI. W. ALONG STATE HWY. 28 FROM THE COURTHOUSE AT ROCKVILLE
 JV2858'THENCE A SHORT DISTANCE S. ALONG GLEN MILL ROAD TO THE JUNCTION
 JV2858'WITH MARION DRIVE IN THE TOP AND CENTERLINE OF THE CONCRETE
 JV2858'HEADWALL IN THE W. CORNER OF THE JUNCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2860 ***********************************************************************
 JV2860  DESIGNATION -  3191 WSSC
 JV2860  PID         -  JV2860
 JV2860  STATE/COUNTY-  MD/MONTGOMERY
 JV2860  COUNTRY     -  US
 JV2860  USGS QUAD   -  ROCKVILLE (2016)
 JV2860
 JV2860                         *CURRENT SURVEY CONTROL
 JV2860  ______________________________________________________________________
 JV2860* NAD 83(1986) POSITION- 39 04 44.     (N) 077 11 52.     (W)   SCALED
 JV2860* NAVD 88 ORTHO HEIGHT -   130.136 (meters)      426.95  (feet) ADJUSTED
 JV2860  ______________________________________________________________________
 JV2860  GEOID HEIGHT    -        -31.702 (meters)                     GEOID18
 JV2860  DYNAMIC HEIGHT  -        130.069 (meters)      426.73  (feet) COMP
 JV2860  MODELED GRAVITY -    980,107.7   (mgal)                       NAVD 88
 JV2860
 JV2860  VERT ORDER      -  SECOND    CLASS 0
 JV2860
 JV2860.The horizontal coordinates were scaled from a map and have
 JV2860.an estimated accuracy of +/- 6 seconds.
 JV2860
 JV2860.The orthometric height was determined by differential leveling and
 JV2860.adjusted by the NATIONAL GEODETIC SURVEY
 JV2860.in June 1991.
 JV2860
 JV2860.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2860.GEOID18 height accuracy estimate available here.
 JV2860
 JV2860.Click photographs - Photos may exist for this station.
 JV2860
 JV2860.The dynamic height is computed by dividing the NAVD 88
 JV2860.geopotential number by the normal gravity value computed on the
 JV2860.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2860.degrees latitude (g = 980.6199 gals.).
 JV2860
 JV2860.The modeled gravity was interpolated from observed gravity values.
 JV2860
 JV2860;                    North         East    Units  Estimated Accuracy
 JV2860;SPC MD       -   156,780.      382,890.      MT  (+/- 180 meters Scaled)
 JV2860
 JV2860_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ098278(NAD 83)
 JV2860
 JV2860                          SUPERSEDED SURVEY CONTROL
 JV2860
 JV2860  NGVD 29 (11/26/84)  130.361  (m)          427.69   (f) ADJUSTED    2 0
 JV2860
 JV2860.Superseded values are not recommended for survey control.
 JV2860
 JV2860.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2860.See file dsdata.pdf to determine how the superseded data were derived.
 JV2860
 JV2860_MARKER: B = BOLT
 JV2860_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2860_SP_SET: HEADWALL
 JV2860_STAMPING: WSSC BM 3191
 JV2860_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2860
 JV2860  HISTORY     - Date     Condition        Report By
 JV2860  HISTORY     - UNK      MONUMENTED       WSSC
 JV2860  HISTORY     - 1965     GOOD             WSSC
 JV2860  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV2860
 JV2860                          STATION DESCRIPTION
 JV2860
 JV2860'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2860'3.4 MI SW FROM ROCKVILLE.
 JV2860'2.4 MI. W. ALONG STATE HWY. 28 FROM THE COURTHOUSE IN ROCKVILLE,
 JV2860'THENCE 0.9 MI. S. ALONG GLEN MILL ROAD, THENCE 0.16 MI. S.E.
 JV2860'ALONG VIERS DRIVE.  600 FT. N.W. OF THE JUNCTION WITH OAKWOOD
 JV2860'DRIVE.  IN THE TOP AND CENTERLINE OF THE N.E. CONCRETE HEADWALL.
 JV2860'BENCH MARK MAY ALSO BE REACHED BY GOING 1.4 MI. S.W. ALONG
 JV2860'STATE HWY. 189 (FALLS ROAD FROM THE COURTHOUSE IN ROCKVILLE
 JV2860'THENCE 1.7 MI. W. ALONG SCOTT DRIVE.
 JV2860
 JV2860                          STATION RECOVERY (2000)
 JV2860
 JV2860'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2860'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2861 ***********************************************************************
 JV2861  DESIGNATION -  3192 WSSC
 JV2861  PID         -  JV2861
 JV2861  STATE/COUNTY-  MD/MONTGOMERY
 JV2861  COUNTRY     -  US
 JV2861  USGS QUAD   -  ROCKVILLE (2016)
 JV2861
 JV2861                         *CURRENT SURVEY CONTROL
 JV2861  ______________________________________________________________________
 JV2861* NAD 83(1986) POSITION- 39 04 30.     (N) 077 11 59.     (W)   SCALED
 JV2861* NAVD 88 ORTHO HEIGHT -   116.850 (meters)      383.37  (feet) ADJUSTED
 JV2861  ______________________________________________________________________
 JV2861  GEOID HEIGHT    -        -31.701 (meters)                     GEOID18
 JV2861  DYNAMIC HEIGHT  -        116.789 (meters)      383.17  (feet) COMP
 JV2861  MODELED GRAVITY -    980,108.6   (mgal)                       NAVD 88
 JV2861
 JV2861  VERT ORDER      -  SECOND    CLASS 0
 JV2861
 JV2861.The horizontal coordinates were scaled from a map and have
 JV2861.an estimated accuracy of +/- 6 seconds.
 JV2861
 JV2861.The orthometric height was determined by differential leveling and
 JV2861.adjusted by the NATIONAL GEODETIC SURVEY
 JV2861.in June 1991.
 JV2861
 JV2861.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2861.GEOID18 height accuracy estimate available here.
 JV2861
 JV2861.Click photographs - Photos may exist for this station.
 JV2861
 JV2861.The dynamic height is computed by dividing the NAVD 88
 JV2861.geopotential number by the normal gravity value computed on the
 JV2861.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2861.degrees latitude (g = 980.6199 gals.).
 JV2861
 JV2861.The modeled gravity was interpolated from observed gravity values.
 JV2861
 JV2861;                    North         East    Units  Estimated Accuracy
 JV2861;SPC MD       -   156,350.      382,720.      MT  (+/- 180 meters Scaled)
 JV2861
 JV2861_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ097274(NAD 83)
 JV2861
 JV2861                          SUPERSEDED SURVEY CONTROL
 JV2861
 JV2861  NGVD 29 (11/26/84)  117.075  (m)          384.10   (f) ADJUSTED    2 0
 JV2861
 JV2861.Superseded values are not recommended for survey control.
 JV2861
 JV2861.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2861.See file dsdata.pdf to determine how the superseded data were derived.
 JV2861
 JV2861_MARKER: B = BOLT
 JV2861_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2861_SP_SET: HEADWALL
 JV2861_STAMPING: WSSC BM 3192
 JV2861_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2861
 JV2861  HISTORY     - Date     Condition        Report By
 JV2861  HISTORY     - UNK      MONUMENTED       WSSC
 JV2861  HISTORY     - 1965     GOOD             WSSC
 JV2861  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV2861
 JV2861                          STATION DESCRIPTION
 JV2861
 JV2861'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2861'3.7 MI NW FROM ROCKVILLE.
 JV2861'2.4 MI. W. ALONG STATE HWY. 28 FROM THE COURTHOUSE IN ROCKVILLE,
 JV2861'THENCE 1.0 MI. S. ALONG GLEN MILL ROAD, THENCE 0.3 MI. S.
 JV2861'ALONG VALLEY DRIVE IN THE TOP CENTERLINE OF THE CONCRETE HEADWALL
 JV2861'IN THE S.E. CORNER OF THE JUNCTION WITH OAKWOOD DRIVE.
 JV2861
 JV2861                          STATION RECOVERY (2000)
 JV2861
 JV2861'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2861'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2862 ***********************************************************************
 JV2862  DESIGNATION -  3193 WSSC
 JV2862  PID         -  JV2862
 JV2862  STATE/COUNTY-  MD/MONTGOMERY
 JV2862  COUNTRY     -  US
 JV2862  USGS QUAD   -  ROCKVILLE (2016)
 JV2862
 JV2862                         *CURRENT SURVEY CONTROL
 JV2862  ______________________________________________________________________
 JV2862* NAD 83(1986) POSITION- 39 04 07.     (N) 077 11 56.     (W)   SCALED
 JV2862* NAVD 88 ORTHO HEIGHT -   104.658 (meters)      343.37  (feet) ADJUSTED
 JV2862  ______________________________________________________________________
 JV2862  GEOID HEIGHT    -        -31.702 (meters)                     GEOID18
 JV2862  DYNAMIC HEIGHT  -        104.604 (meters)      343.19  (feet) COMP
 JV2862  MODELED GRAVITY -    980,109.7   (mgal)                       NAVD 88
 JV2862
 JV2862  VERT ORDER      -  SECOND    CLASS 0
 JV2862
 JV2862.The horizontal coordinates were scaled from a map and have
 JV2862.an estimated accuracy of +/- 6 seconds.
 JV2862
 JV2862.The orthometric height was determined by differential leveling and
 JV2862.adjusted by the NATIONAL GEODETIC SURVEY
 JV2862.in June 1991.
 JV2862
 JV2862.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2862.GEOID18 height accuracy estimate available here.
 JV2862
 JV2862.Click photographs - Photos may exist for this station.
 JV2862
 JV2862.The dynamic height is computed by dividing the NAVD 88
 JV2862.geopotential number by the normal gravity value computed on the
 JV2862.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2862.degrees latitude (g = 980.6199 gals.).
 JV2862
 JV2862.The modeled gravity was interpolated from observed gravity values.
 JV2862
 JV2862;                    North         East    Units  Estimated Accuracy
 JV2862;SPC MD       -   155,640.      382,790.      MT  (+/- 180 meters Scaled)
 JV2862
 JV2862_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ097266(NAD 83)
 JV2862
 JV2862                          SUPERSEDED SURVEY CONTROL
 JV2862
 JV2862  NGVD 29 (11/26/84)  104.883  (m)          344.10   (f) ADJUSTED    2 0
 JV2862
 JV2862.Superseded values are not recommended for survey control.
 JV2862
 JV2862.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2862.See file dsdata.pdf to determine how the superseded data were derived.
 JV2862
 JV2862_MARKER: B = BOLT
 JV2862_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2862_SP_SET: HEADWALL
 JV2862_STAMPING: WSSC BM 3193
 JV2862_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2862
 JV2862  HISTORY     - Date     Condition        Report By
 JV2862  HISTORY     - UNK      MONUMENTED       WSSC
 JV2862  HISTORY     - 1965     GOOD             WSSC
 JV2862  HISTORY     - 20001106 GOOD             USPSQD
 JV2862
 JV2862                          STATION DESCRIPTION
 JV2862
 JV2862'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2862'4.2 MI SW FROM ROCKVILLE.
 JV2862'2.4 MI. W. ALONG STATE HWY. IS FROM THE COURTHOUSE IN ROCKVILLE,
 JV2862'THENCE 1.0 MI. S. ALONG GLEN MILL ROAD, THENCE 0.8 MI. S.
 JV2862'ALONG VALLEY DRIVE ABOUT 650 FT. N. FROM THE JUNCTION WITH
 JV2862'WATTS BRANCH DRIVE IN THE TOP AND CENTERLINE OF THE CONCRETE
 JV2862'HEADWALL ON THE W. SIDE OF THE ROAD.
 JV2862
 JV2862                          STATION RECOVERY (2000)
 JV2862
 JV2862'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2862'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2863 ***********************************************************************
 JV2863  DESIGNATION -  3194 WSSC
 JV2863  PID         -  JV2863
 JV2863  STATE/COUNTY-  MD/MONTGOMERY
 JV2863  COUNTRY     -  US
 JV2863  USGS QUAD   -  ROCKVILLE (2016)
 JV2863
 JV2863                         *CURRENT SURVEY CONTROL
 JV2863  ______________________________________________________________________
 JV2863* NAD 83(1986) POSITION- 39 04 03.     (N) 077 12 17.     (W)   SCALED
 JV2863* NAVD 88 ORTHO HEIGHT -   116.595 (meters)      382.53  (feet) ADJUSTED
 JV2863  ______________________________________________________________________
 JV2863  GEOID HEIGHT    -        -31.701 (meters)                     GEOID18
 JV2863  DYNAMIC HEIGHT  -        116.535 (meters)      382.33  (feet) COMP
 JV2863  MODELED GRAVITY -    980,110.0   (mgal)                       NAVD 88
 JV2863
 JV2863  VERT ORDER      -  SECOND    CLASS 0
 JV2863
 JV2863.The horizontal coordinates were scaled from a map and have
 JV2863.an estimated accuracy of +/- 6 seconds.
 JV2863
 JV2863.The orthometric height was determined by differential leveling and
 JV2863.adjusted by the NATIONAL GEODETIC SURVEY
 JV2863.in June 1991.
 JV2863
 JV2863.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2863.GEOID18 height accuracy estimate available here.
 JV2863
 JV2863.Click photographs - Photos may exist for this station.
 JV2863
 JV2863.The dynamic height is computed by dividing the NAVD 88
 JV2863.geopotential number by the normal gravity value computed on the
 JV2863.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2863.degrees latitude (g = 980.6199 gals.).
 JV2863
 JV2863.The modeled gravity was interpolated from observed gravity values.
 JV2863
 JV2863;                    North         East    Units  Estimated Accuracy
 JV2863;SPC MD       -   155,520.      382,280.      MT  (+/- 180 meters Scaled)
 JV2863
 JV2863_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ092265(NAD 83)
 JV2863
 JV2863                          SUPERSEDED SURVEY CONTROL
 JV2863
 JV2863  NGVD 29 (11/26/84)  116.821  (m)          383.27   (f) ADJUSTED    2 0
 JV2863
 JV2863.Superseded values are not recommended for survey control.
 JV2863
 JV2863.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2863.See file dsdata.pdf to determine how the superseded data were derived.
 JV2863
 JV2863_MARKER: B = BOLT
 JV2863_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2863_SP_SET: HEADWALL
 JV2863_STAMPING: WSSC BM 3195
 JV2863_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2863
 JV2863  HISTORY     - Date     Condition        Report By
 JV2863  HISTORY     - UNK      MONUMENTED       WSSC
 JV2863  HISTORY     - 1965     GOOD             WSSC
 JV2863  HISTORY     - 20001106 GOOD             USPSQD
 JV2863
 JV2863                          STATION DESCRIPTION
 JV2863
 JV2863'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2863'4.6 MI SW FROM ROCKVILLE.
 JV2863'2.4 MI. W. ALONG STATE HWY. 28 FROM THE COURTHOUSE IN ROCKVILLE,
 JV2863'THENCE 1.0 MI. S. ALONG GLEN MILL ROAD, THENCE 0.8 S. ALONG VALLEY
 JV2863'DRIVE, THENCE 0.4 MI. W. ALONG WATTS BRANCH DR. IN THE TOP AND
 JV2863'CENTERLINE OF THE CONCRETE HEADWALL N.E. OF THE CENTERLINE
 JV2863'JUNCTION WITH SPRING DRIVE.  BENCH MARK MAY ALSO BE REACHED BY
 JV2863'GOING 2.4 MI. W. ALONG STATE HWY. 28 FROM THE COURTHOUSE IN
 JV2863'ROCKVILLE, THENCE 2.1 MI. S. ALONG GLEN MILL ROAD, THENCE 0.2
 JV2863'MI. E. ALONG WATTS BRANCH DRIVE.
 JV2863
 JV2863                          STATION RECOVERY (2000)
 JV2863
 JV2863'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2863'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2864 ***********************************************************************
 JV2864  DESIGNATION -  3195 WSSC
 JV2864  PID         -  JV2864
 JV2864  STATE/COUNTY-  MD/MONTGOMERY
 JV2864  COUNTRY     -  US
 JV2864  USGS QUAD   -  ROCKVILLE (2016)
 JV2864
 JV2864                         *CURRENT SURVEY CONTROL
 JV2864  ______________________________________________________________________
 JV2864* NAD 83(1986) POSITION- 39 04 05.     (N) 077 12 40.     (W)   SCALED
 JV2864* NAVD 88 ORTHO HEIGHT -   101.363 (meters)      332.56  (feet) ADJUSTED
 JV2864  ______________________________________________________________________
 JV2864  GEOID HEIGHT    -        -31.701 (meters)                     GEOID18
 JV2864  DYNAMIC HEIGHT  -        101.310 (meters)      332.38  (feet) COMP
 JV2864  MODELED GRAVITY -    980,109.8   (mgal)                       NAVD 88
 JV2864
 JV2864  VERT ORDER      -  SECOND    CLASS 0
 JV2864
 JV2864.The horizontal coordinates were scaled from a map and have
 JV2864.an estimated accuracy of +/- 6 seconds.
 JV2864
 JV2864.The orthometric height was determined by differential leveling and
 JV2864.adjusted by the NATIONAL GEODETIC SURVEY
 JV2864.in June 1991.
 JV2864
 JV2864.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2864.GEOID18 height accuracy estimate available here.
 JV2864
 JV2864.Click photographs - Photos may exist for this station.
 JV2864
 JV2864.The dynamic height is computed by dividing the NAVD 88
 JV2864.geopotential number by the normal gravity value computed on the
 JV2864.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2864.degrees latitude (g = 980.6199 gals.).
 JV2864
 JV2864.The modeled gravity was interpolated from observed gravity values.
 JV2864
 JV2864;                    North         East    Units  Estimated Accuracy
 JV2864;SPC MD       -   155,580.      381,730.      MT  (+/- 180 meters Scaled)
 JV2864
 JV2864_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ087266(NAD 83)
 JV2864
 JV2864                          SUPERSEDED SURVEY CONTROL
 JV2864
 JV2864  NGVD 29 (11/26/84)  101.589  (m)          333.30   (f) ADJUSTED    2 0
 JV2864
 JV2864.Superseded values are not recommended for survey control.
 JV2864
 JV2864.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2864.See file dsdata.pdf to determine how the superseded data were derived.
 JV2864
 JV2864_MARKER: B = BOLT
 JV2864_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2864_SP_SET: BRIDGE
 JV2864_STAMPING: WSSC BM 3195
 JV2864_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2864
 JV2864  HISTORY     - Date     Condition        Report By
 JV2864  HISTORY     - UNK      MONUMENTED       WSSC
 JV2864  HISTORY     - 1965     GOOD             WSSC
 JV2864  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV2864
 JV2864                          STATION DESCRIPTION
 JV2864
 JV2864'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2864'4.6 MI SW FROM ROCKVILLE.
 JV2864'2.4 MI. W. ALONG STATE HWY. 28 FROM THE COURTHOUSE IN ROCKVILLE,
 JV2864'THENCE 2.2 MI. S. ALONG GLEN MILL ROAD, 0.2 MI. E. OF THE
 JV2864'JUNCTION WITH BOSWELL LANE IN THE TOP OF THE N.W. CONCRETE
 JV2864'WINGWALL OF THE BRIDGE OVER PINEY BRANCH.
 JV2864
 JV2864                          STATION RECOVERY (2000)
 JV2864
 JV2864'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2864'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2867 ***********************************************************************
 JV2867  DESIGNATION -  3196 WSSC
 JV2867  PID         -  JV2867
 JV2867  STATE/COUNTY-  MD/MONTGOMERY
 JV2867  COUNTRY     -  US
 JV2867  USGS QUAD   -  ROCKVILLE (2016)
 JV2867
 JV2867                         *CURRENT SURVEY CONTROL
 JV2867  ______________________________________________________________________
 JV2867* NAD 83(1986) POSITION- 39 03 13.     (N) 077 13 02.     (W)   SCALED
 JV2867* NAVD 88 ORTHO HEIGHT -    86.094 (meters)      282.46  (feet) ADJUSTED
 JV2867  ______________________________________________________________________
 JV2867  GEOID HEIGHT    -        -31.702 (meters)                     GEOID18
 JV2867  DYNAMIC HEIGHT  -         86.050 (meters)      282.32  (feet) COMP
 JV2867  MODELED GRAVITY -    980,110.5   (mgal)                       NAVD 88
 JV2867
 JV2867  VERT ORDER      -  SECOND    CLASS 0
 JV2867
 JV2867.The horizontal coordinates were scaled from a map and have
 JV2867.an estimated accuracy of +/- 6 seconds.
 JV2867
 JV2867.The orthometric height was determined by differential leveling and
 JV2867.adjusted by the NATIONAL GEODETIC SURVEY
 JV2867.in June 1991.
 JV2867
 JV2867.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2867.GEOID18 height accuracy estimate available here.
 JV2867
 JV2867.Click photographs - Photos may exist for this station.
 JV2867
 JV2867.The dynamic height is computed by dividing the NAVD 88
 JV2867.geopotential number by the normal gravity value computed on the
 JV2867.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2867.degrees latitude (g = 980.6199 gals.).
 JV2867
 JV2867.The modeled gravity was interpolated from observed gravity values.
 JV2867
 JV2867;                    North         East    Units  Estimated Accuracy
 JV2867;SPC MD       -   153,980.      381,200.      MT  (+/- 180 meters Scaled)
 JV2867
 JV2867_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ081250(NAD 83)
 JV2867
 JV2867                          SUPERSEDED SURVEY CONTROL
 JV2867
 JV2867  NGVD 29 (11/26/84)   86.322  (m)          283.21   (f) ADJUSTED    2 0
 JV2867
 JV2867.Superseded values are not recommended for survey control.
 JV2867
 JV2867.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2867.See file dsdata.pdf to determine how the superseded data were derived.
 JV2867
 JV2867_MARKER: B = BOLT
 JV2867_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2867_SP_SET: BRIDGE
 JV2867_STAMPING: WSSC BM 3196
 JV2867_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2867
 JV2867  HISTORY     - Date     Condition        Report By
 JV2867  HISTORY     - UNK      MONUMENTED       WSSC
 JV2867  HISTORY     - 1965     GOOD             WSSC
 JV2867  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV2867
 JV2867                          STATION DESCRIPTION
 JV2867
 JV2867'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2867'5.9 MI SW FROM ROCKVILLE.
 JV2867'2.4 MI. W. ALONG STATE HWY. 28 FROM THE COURTHOUSE IN ROCKVILLE,
 JV2867'THENCE 3.5 S. ALONG GLEN MILL ROAD ABOUT 500 FT. N. OF THE
 JV2867'JUNCTION WITH LLOYD ROAD AND ABOUT 750 FT. S. OF THE JUNCTION
 JV2867'WITH RED BARN LANE 0.6 MI. N. OF THE INTERSECTION OF GLEN MILL
 JV2867'ROAD AND GLEN ROAD AT GLEN IN THE TOP AND CENTERLINE OF THE W.
 JV2867'CONCRETE HEADWALL OF THE BRIDGE OVER PINEY BRANCH.
 JV2867
 JV2867                          STATION RECOVERY (2000)
 JV2867
 JV2867'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2867'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2336 ***********************************************************************
 JV2336  DESIGNATION -  3197 WSSC
 JV2336  PID         -  JV2336
 JV2336  STATE/COUNTY-  MD/MONTGOMERY
 JV2336  COUNTRY     -  US
 JV2336  USGS QUAD   -  SENECA (2016)
 JV2336
 JV2336                         *CURRENT SURVEY CONTROL
 JV2336  ______________________________________________________________________
 JV2336* NAD 83(1986) POSITION- 39 04 44.     (N) 077 20 25.     (W)   SCALED
 JV2336* NAVD 88 ORTHO HEIGHT -    62.635 (meters)      205.50  (feet) ADJUSTED
 JV2336  ______________________________________________________________________
 JV2336  GEOID HEIGHT    -        -31.867 (meters)                     GEOID18
 JV2336  DYNAMIC HEIGHT  -         62.601 (meters)      205.38  (feet) COMP
 JV2336  MODELED GRAVITY -    980,096.4   (mgal)                       NAVD 88
 JV2336
 JV2336  VERT ORDER      -  SECOND    CLASS 0
 JV2336
 JV2336.The horizontal coordinates were scaled from a map and have
 JV2336.an estimated accuracy of +/- 6 seconds.
 JV2336
 JV2336.The orthometric height was determined by differential leveling and
 JV2336.adjusted by the NATIONAL GEODETIC SURVEY
 JV2336.in June 1991.
 JV2336
 JV2336.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2336.GEOID18 height accuracy estimate available here.
 JV2336
 JV2336.Click photographs - Photos may exist for this station.
 JV2336
 JV2336.The dynamic height is computed by dividing the NAVD 88
 JV2336.geopotential number by the normal gravity value computed on the
 JV2336.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2336.degrees latitude (g = 980.6199 gals.).
 JV2336
 JV2336.The modeled gravity was interpolated from observed gravity values.
 JV2336
 JV2336;                    North         East    Units  Estimated Accuracy
 JV2336;SPC MD       -   156,820.      370,560.      MT  (+/- 180 meters Scaled)
 JV2336
 JV2336_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ975281(NAD 83)
 JV2336
 JV2336                          SUPERSEDED SURVEY CONTROL
 JV2336
 JV2336  NGVD 29 (11/26/84)   62.858  (m)          206.23   (f) ADJUSTED    2 0
 JV2336
 JV2336.Superseded values are not recommended for survey control.
 JV2336
 JV2336.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2336.See file dsdata.pdf to determine how the superseded data were derived.
 JV2336
 JV2336_MARKER: B = BOLT
 JV2336_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2336_SP_SET: SIDEWALK
 JV2336_STAMPING: WSSC BM 3197
 JV2336_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2336
 JV2336  HISTORY     - Date     Condition        Report By
 JV2336  HISTORY     - UNK      MONUMENTED       WSSC
 JV2336  HISTORY     - 1966     GOOD             CGS
 JV2336
 JV2336                          STATION DESCRIPTION
 JV2336
 JV2336'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 JV2336'AT SENECA.
 JV2336'AT SENECA, AT THE STATE HIGHWAY 112 BRIDGE OVER SENECA CREEK,
 JV2336'BRASS BOLT AND WASHER SET IN THE TOP OF CONCRETE SIDEWALK AT
 JV2336'SOUTHEAST CORNER OF BRIDGE, ABOUT 1 FOOT ABOVE LEVEL OF BRIDGE FLOOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2905 ***********************************************************************
 JV2905  DESIGNATION -  3198 WSSC
 JV2905  PID         -  JV2905
 JV2905  STATE/COUNTY-  MD/MONTGOMERY
 JV2905  COUNTRY     -  US
 JV2905  USGS QUAD   -  SENECA (2016)
 JV2905
 JV2905                         *CURRENT SURVEY CONTROL
 JV2905  ______________________________________________________________________
 JV2905* NAD 83(1986) POSITION- 39 04 42.     (N) 077 19 39.     (W)   SCALED
 JV2905* NAVD 88 ORTHO HEIGHT -    92.230 (meters)      302.59  (feet) ADJUSTED
 JV2905  ______________________________________________________________________
 JV2905  GEOID HEIGHT    -        -31.840 (meters)                     GEOID18
 JV2905  DYNAMIC HEIGHT  -         92.181 (meters)      302.43  (feet) COMP
 JV2905  MODELED GRAVITY -    980,098.0   (mgal)                       NAVD 88
 JV2905
 JV2905  VERT ORDER      -  SECOND    CLASS 0
 JV2905
 JV2905.The horizontal coordinates were scaled from a map and have
 JV2905.an estimated accuracy of +/- 6 seconds.
 JV2905
 JV2905.The orthometric height was determined by differential leveling and
 JV2905.adjusted by the NATIONAL GEODETIC SURVEY
 JV2905.in June 1991.
 JV2905
 JV2905.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2905.GEOID18 height accuracy estimate available here.
 JV2905
 JV2905.Click photographs - Photos may exist for this station.
 JV2905
 JV2905.The dynamic height is computed by dividing the NAVD 88
 JV2905.geopotential number by the normal gravity value computed on the
 JV2905.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2905.degrees latitude (g = 980.6199 gals.).
 JV2905
 JV2905.The modeled gravity was interpolated from observed gravity values.
 JV2905
 JV2905;                    North         East    Units  Estimated Accuracy
 JV2905;SPC MD       -   156,750.      371,660.      MT  (+/- 180 meters Scaled)
 JV2905
 JV2905_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ986280(NAD 83)
 JV2905
 JV2905                          SUPERSEDED SURVEY CONTROL
 JV2905
 JV2905  NGVD 29 (11/26/84)   92.452  (m)          303.32   (f) ADJUSTED    2 0
 JV2905
 JV2905.Superseded values are not recommended for survey control.
 JV2905
 JV2905.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2905.See file dsdata.pdf to determine how the superseded data were derived.
 JV2905
 JV2905_MARKER: B = BOLT
 JV2905_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2905_SP_SET: HEADWALL
 JV2905_STAMPING: WSSC BM 3198
 JV2905_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2905
 JV2905  HISTORY     - Date     Condition        Report By
 JV2905  HISTORY     - UNK      MONUMENTED       WSSC
 JV2905  HISTORY     - 1965     GOOD             WSSC
 JV2905  HISTORY     - 20140901 MARK NOT FOUND   BASE9
 JV2905
 JV2905                          STATION DESCRIPTION
 JV2905
 JV2905'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2905'0.7 MI E FROM SENCEA.
 JV2905'0.7 MI. E. ALONG STATE HWY, 112 FROM THE BRIDGE OVER SENECA
 JV2905'CREEK AT SENECA, THENCE ABOUT 175 FT. S.E. ALONG RIVER ROAD (ALSO
 JV2905'VIOLETS LOCK ROAD) IN THE TOP AND CENTERLINE OF THE S.W. CONCRETE
 JV2905'HEADWALL.
 JV2905
 JV2905                          STATION RECOVERY (2014)
 JV2905
 JV2905'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 JV2905'THERE IS NO LONGER A HEADWALL AT THIS LOCATION.  MARK SHOULD BE
 JV2905'CONSIDERED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2904 ***********************************************************************
 JV2904  DESIGNATION -  3199 WSSC
 JV2904  PID         -  JV2904
 JV2904  STATE/COUNTY-  MD/MONTGOMERY
 JV2904  COUNTRY     -  US
 JV2904  USGS QUAD   -  SENECA (2016)
 JV2904
 JV2904                         *CURRENT SURVEY CONTROL
 JV2904  ______________________________________________________________________
 JV2904* NAD 83(1986) POSITION- 39 04 53.     (N) 077 19 07.     (W)   SCALED
 JV2904* NAVD 88 ORTHO HEIGHT -   109.010 (meters)      357.64  (feet) ADJUSTED
 JV2904  ______________________________________________________________________
 JV2904  GEOID HEIGHT    -        -31.824 (meters)                     GEOID18
 JV2904  DYNAMIC HEIGHT  -        108.952 (meters)      357.45  (feet) COMP
 JV2904  MODELED GRAVITY -    980,099.3   (mgal)                       NAVD 88
 JV2904
 JV2904  VERT ORDER      -  SECOND    CLASS 0
 JV2904
 JV2904.The horizontal coordinates were scaled from a map and have
 JV2904.an estimated accuracy of +/- 6 seconds.
 JV2904
 JV2904.The orthometric height was determined by differential leveling and
 JV2904.adjusted by the NATIONAL GEODETIC SURVEY
 JV2904.in June 1991.
 JV2904
 JV2904.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2904.GEOID18 height accuracy estimate available here.
 JV2904
 JV2904.Click photographs - Photos may exist for this station.
 JV2904
 JV2904.The dynamic height is computed by dividing the NAVD 88
 JV2904.geopotential number by the normal gravity value computed on the
 JV2904.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2904.degrees latitude (g = 980.6199 gals.).
 JV2904
 JV2904.The modeled gravity was interpolated from observed gravity values.
 JV2904
 JV2904;                    North         East    Units  Estimated Accuracy
 JV2904;SPC MD       -   157,090.      372,430.      MT  (+/- 180 meters Scaled)
 JV2904
 JV2904_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ994283(NAD 83)
 JV2904
 JV2904                          SUPERSEDED SURVEY CONTROL
 JV2904
 JV2904  NGVD 29 (11/26/84)  109.231  (m)          358.37   (f) ADJUSTED    2 0
 JV2904
 JV2904.Superseded values are not recommended for survey control.
 JV2904
 JV2904.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2904.See file dsdata.pdf to determine how the superseded data were derived.
 JV2904
 JV2904_MARKER: B = BOLT
 JV2904_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2904_SP_SET: HEADWALL
 JV2904_STAMPING: WSSC BM 3199
 JV2904_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2904
 JV2904  HISTORY     - Date     Condition        Report By
 JV2904  HISTORY     - UNK      MONUMENTED       WSSC
 JV2904  HISTORY     - 1965     GOOD             WSSC
 JV2904
 JV2904                          STATION DESCRIPTION
 JV2904
 JV2904'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2904'1.2 MI E FROM SENCEA.
 JV2904'1.2 MI. E. ALONG STATE HWY. 112 FROM THE BRIDGE OVER SENECA CREEK
 JV2904'AT SENECA IN THE TOP AND CENTERLINE OF THE S.E. CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2625 ***********************************************************************
 JV2625  DESIGNATION -  32
 JV2625  PID         -  JV2625
 JV2625  STATE/COUNTY-  MD/MONTGOMERY
 JV2625  COUNTRY     -  US
 JV2625  USGS QUAD   -  KENSINGTON (2016)
 JV2625
 JV2625                         *CURRENT SURVEY CONTROL
 JV2625  ______________________________________________________________________
 JV2625* NAD 83(1986) POSITION- 39 05 02.     (N) 077 04 40.     (W)   SCALED
 JV2625* NAVD 88 ORTHO HEIGHT -   111.83  (+/-2cm)      366.9   (feet) VERTCON3
 JV2625  ______________________________________________________________________
 JV2625  GEOID HEIGHT    -        -31.828 (meters)                     GEOID18
 JV2625  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2625
 JV2625.The horizontal coordinates were scaled from a map and have
 JV2625.an estimated accuracy of +/- 6 seconds.
 JV2625
 JV2625.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2625.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2625
 JV2625.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2625.GEOID18 height accuracy estimate available here.
 JV2625
 JV2625.The vertical order pertains to the NGVD 29 superseded value.
 JV2625
 JV2625.Click photographs - Photos may exist for this station.
 JV2625
 JV2625;                    North         East    Units  Estimated Accuracy
 JV2625;SPC MD       -   157,320.      393,270.      MT  (+/- 180 meters Scaled)
 JV2625
 JV2625_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ202281(NAD 83)
 JV2625
 JV2625                          SUPERSEDED SURVEY CONTROL
 JV2625
 JV2625  NGVD 29 (11/26/84)  112.044  (m)          367.60   (f) ADJUSTED    2 0
 JV2625
 JV2625.Superseded values are not recommended for survey control.
 JV2625
 JV2625.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2625.See file dsdata.pdf to determine how the superseded data were derived.
 JV2625
 JV2625_MARKER: DD = SURVEY DISK
 JV2625_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2625_STAMPING: 32
 JV2625_MARK LOGO: CGS+SS
 JV2625_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2625+STABILITY: SURFACE MOTION
 JV2625
 JV2625  HISTORY     - Date     Condition        Report By
 JV2625  HISTORY     - 1934     MONUMENTED       MDGS
 JV2625  HISTORY     - 1944     GOOD             WSSC
 JV2625  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV2625
 JV2625                          STATION DESCRIPTION
 JV2625
 JV2625'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2625'2 MI S FROM NORBECK.
 JV2625'ON GEORGIA AVENUE (STATE HIGHWAY 97), 0.2 MILE NORTH OF ASPEN
 JV2625'HILL KENNELS, ON THE EAST SIDE OF THE HIGHWAY, 62.2 FEET SOUTH
 JV2625'OF P.E.P. CO. POLE 721147, 47.6 FEET NORTH OF ROAD MARKER 77,
 JV2625'56.6 FEET EAST ACROSS THE HIGHWAY FROM A 36-INCH TWIN WALNUT
 JV2625'TREE, AND 4 FEET WEST OF A RED STONE WITH A CROSS.
 JV2625
 JV2625                          STATION RECOVERY (1995)
 JV2625
 JV2625'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2625'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7814 ***********************************************************************
 DR7814  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7814  DESIGNATION -  32
 DR7814  PID         -  DR7814
 DR7814  STATE/COUNTY-  MD/QUEEN ANNES
 DR7814  COUNTRY     -  US
 DR7814  USGS QUAD   -  SUDLERSVILLE (2017)
 DR7814
 DR7814                         *CURRENT SURVEY CONTROL
 DR7814  ______________________________________________________________________
 DR7814* NAD 83(2011) POSITION- 39 14 08.89118(N) 075 45 55.24944(W)   ADJUSTED
 DR7814* NAD 83(2011) ELLIP HT-   -14.984 (meters)        (02/02/22)   ADJUSTED
 DR7814* NAD 83(2011) EPOCH   -  2010.00
 DR7814* NAVD 88 ORTHO HEIGHT -    18.80  (meters)       61.7   (feet) GPS OBS
 DR7814  ______________________________________________________________________
 DR7814  GEOID HEIGHT    -        -33.788 (meters)                     GEOID18
 DR7814  NAD 83(2011) X  -  1,216,386.645 (meters)                     COMP
 DR7814  NAD 83(2011) Y  - -4,794,916.834 (meters)                     COMP
 DR7814  NAD 83(2011) Z  -  4,012,617.967 (meters)                     COMP
 DR7814  LAPLACE CORR    -         -2.79  (seconds)                    DEFLEC18
 DR7814
 DR7814  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7814  Standards:
 DR7814         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7814            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7814  -------------------------------------------------------------------
 DR7814  NETWORK    0.78   1.71           0.34   0.29   0.87     -0.19367218
 DR7814  -------------------------------------------------------------------
 DR7814  Click here for local accuracies and other accuracy information.
 DR7814
 DR7814.The horizontal coordinates were established by GPS observations
 DR7814.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7814
 DR7814.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7814.been affixed to the stable North American tectonic plate. See 
 DR7814.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7814
 DR7814.The horizontal coordinates are valid at the epoch date displayed above
 DR7814.which is a decimal equivalence of Year/Month/Day.
 DR7814
 DR7814.The orthometric height was determined by GPS observations and a
 DR7814.high-resolution geoid model using precise GPS observation and
 DR7814.processing techniques.
 DR7814
 DR7814.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7814.GEOID18 height accuracy estimate available here.
 DR7814
 DR7814.Click photographs - Photos may exist for this station.
 DR7814
 DR7814.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7814
 DR7814.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7814
 DR7814.The ellipsoidal height was determined by GPS observations
 DR7814.and is referenced to NAD 83.
 DR7814
 DR7814. The following values were computed from the NAD 83(2011) position.
 DR7814
 DR7814;                    North         East     Units Scale Factor Converg.
 DR7814;SPC MD       -   174,904.292   506,591.140   MT  0.99996954   +0 46 29.7
 DR7814;SPC MD       -   573,831.83  1,662,041.10   sFT  0.99996954   +0 46 29.7
 DR7814;UTM  18      - 4,343,223.486   433,947.393   MT  0.99965372   -0 29 02.8
 DR7814
 DR7814!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7814!SPC MD       -   1.00000235  x   0.99996954  =   0.99997189
 DR7814!UTM  18      -   1.00000235  x   0.99965372  =   0.99965607
 DR7814
 DR7814_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3394743223(NAD 83)
 DR7814
 DR7814                          SUPERSEDED SURVEY CONTROL
 DR7814
 DR7814.No superseded survey control is available for this station.
 DR7814
 DR7814_MARKER: DD = SURVEY DISK
 DR7814_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7814_STAMPING: 32
 DR7814_MARK LOGO: MD-035
 DR7814_PROJECTION: RECESSED 15 CENTIMETERS
 DR7814_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7814+STABILITY: SURFACE MOTION
 DR7814_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7814+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7814
 DR7814  HISTORY     - Date     Condition        Report By
 DR7814  HISTORY     - UNK      MONUMENTED       MD-035
 DR7814  HISTORY     - 20210309 GOOD             MDSHA
 DR7814
 DR7814                          STATION DESCRIPTION
 DR7814
 DR7814'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7814'THE MARK IS LOCATED ABOUT 6.1 MI (9.8 KM) NORTHEAST OF SUDLERSVILLE,
 DR7814'6.0 MI (9.7 KM) SOUTH-SOUTHEAST OF MASSEY, 4.2 MI (6.8 KM)
 DR7814'EAST-SOUTHEAST OF MILLINGTON AND 2.6 MI (4.2 KM) NORTHWEST OF EVERETTS
 DR7814'CORNER, DELAWARE.
 DR7814'
 DR7814'TO REACH FROM THE JUNCTION OF US 301 AND MD 291, GO EAST-SOUTHEAST ON
 DR7814'MD 291 FOR 0.07 MI (0.11 KM) TO A TRAFFIC CIRCLE.  CONTINUE EAST ON MD
 DR7814'291 FOR 2.82 MI (4.54 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DR7814'SOUTH-SOUTHWEST ON PEACOCK CORNER ROAD FOR 1.29 MI (2.08 KM) TO AN
 DR7814'INTERSECTION.  TURN LEFT AND GO EAST ON BLANCO ROAD FOR 2.86 MI (4.60
 DR7814'KM) TO THE MARK ON THE RIGHT.
 DR7814'
 DR7814'THE MARK IS 121.2 FT (36.9 M) EAST-SOUTHEAST OF THE CENTERLINE OF A
 DR7814'GRAVEL DRIVEWAY OF 1300 BLANCO ROAD, 107.0 FT (32.6 M) SOUTHEAST OF
 DR7814'THE SOUTHEAST END OF 18-INCH (46 CM) CORRUGATED METAL PIPE CULVERT
 DR7814'UNDER A GRAVEL DRIVEWAY OF 1300 BLANCO ROAD, 23.9 FT (7.3 M) SOUTHWEST
 DR7814'OF THE CENTERLINE OF BLANCO ROAD, 2.5 FT (0.8 M) NORTH-NORTHEAST OF A
 DR7814'FOUR FOOT TALL WOOD SPLIT RAIL FENCE AND SET IN THE TOP OF A 12-IN (30
 DR7814'CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0407 ***********************************************************************
 HV0407  DESIGNATION -  32 11
 HV0407  PID         -  HV0407
 HV0407  STATE/COUNTY-  MD/ST MARYS
 HV0407  COUNTRY     -  US
 HV0407  USGS QUAD   -  POINT LOOKOUT (2016)
 HV0407
 HV0407                         *CURRENT SURVEY CONTROL
 HV0407  ______________________________________________________________________
 HV0407* NAD 83(1986) POSITION- 38 07 03.     (N) 076 22 19.     (W)   SCALED
 HV0407* NAVD 88 ORTHO HEIGHT -    16.236 (meters)       53.27  (feet) ADJUSTED
 HV0407  ______________________________________________________________________
 HV0407  GEOID HEIGHT    -        -35.060 (meters)                     GEOID18
 HV0407  DYNAMIC HEIGHT  -         16.226 (meters)       53.23  (feet) COMP
 HV0407  MODELED GRAVITY -    979,978.2   (mgal)                       NAVD 88
 HV0407
 HV0407  VERT ORDER      -  FIRST     CLASS II
 HV0407
 HV0407.The horizontal coordinates were scaled from a map and have
 HV0407.an estimated accuracy of +/- 6 seconds.
 HV0407
 HV0407.The orthometric height was determined by differential leveling and
 HV0407.adjusted by the NATIONAL GEODETIC SURVEY
 HV0407.in June 1991.
 HV0407
 HV0407.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0407.GEOID18 height accuracy estimate available here.
 HV0407
 HV0407.Click photographs - Photos may exist for this station.
 HV0407
 HV0407.The dynamic height is computed by dividing the NAVD 88
 HV0407.geopotential number by the normal gravity value computed on the
 HV0407.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0407.degrees latitude (g = 980.6199 gals.).
 HV0407
 HV0407.The modeled gravity was interpolated from observed gravity values.
 HV0407
 HV0407;                    North         East    Units  Estimated Accuracy
 HV0407;SPC MD       -    50,230.      455,080.      MT  (+/- 180 meters Scaled)
 HV0407
 HV0407_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH797197(NAD 83)
 HV0407
 HV0407                          SUPERSEDED SURVEY CONTROL
 HV0407
 HV0407  NGVD 29 (11/26/84)   16.526  (m)           54.22   (f) ADJUSTED    1 2
 HV0407
 HV0407.Superseded values are not recommended for survey control.
 HV0407
 HV0407.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0407.See file dsdata.pdf to determine how the superseded data were derived.
 HV0407
 HV0407_MARKER: DD = SURVEY DISK
 HV0407_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV0407_MARK LOGO: CGS+SS
 HV0407_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0407
 HV0407  HISTORY     - Date     Condition        Report By
 HV0407  HISTORY     - 1934     MONUMENTED       MDGS
 HV0407  HISTORY     - 1941     GOOD             CGS
 HV0407  HISTORY     - 19901016 MARK NOT FOUND   NGS
 HV0407
 HV0407                          STATION DESCRIPTION
 HV0407
 HV0407'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0407'7.1 MI NW FROM POINT LOOKOUT.
 HV0407'ABOUT 7.1 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE
 HV0407'LIGHTHOUSE AT POINT LOOKOUT, SAINT MARYS COUNTY, AT RIDGE,
 HV0407'IN THE WYE FORMED BY THE JUNCTION OF STATE HIGHWAY 235, ABOUT
 HV0407'110 FEET SOUTH OF THE SOUTHWEST CORNER OF THE KNIGHTS OF COLUMBUS
 HV0407'BUILDING, 98 FEET SOUTHEAST OF POWER-TRANSMISSION LINE POLE 499,
 HV0407'41 FEET WEST OF THE CENTER LINE OF STATE HIGHWAY 5, 14 FEET
 HV0407'WEST OF THE CENTER LINE OF THE ROAD LEADING TO THE BUILDING,
 HV0407'AND 0.5 FOOT SOUTH OF A WHITE WOODEN POST STENCILED U.S.B.M.
 HV0407'A STATE SURVEY STANDARD DISK, SET IN THE TOP OF A CONCRETE POST.
 HV0407
 HV0407                          STATION RECOVERY (1990)
 HV0407
 HV0407'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV0407'THE REFERENCE MEASUREMENTS LEAD TO A DITCH.  ASSUMED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7032 ***********************************************************************
 JV7032  DESIGNATION -  32 30 001
 JV7032  PID         -  JV7032
 JV7032  STATE/COUNTY-  MD/HOWARD
 JV7032  COUNTRY     -  US
 JV7032  USGS QUAD   -  WOODBINE (2016)
 JV7032
 JV7032                         *CURRENT SURVEY CONTROL
 JV7032  ______________________________________________________________________
 JV7032* NAD 83(2011) POSITION- 39 16 23.94791(N) 077 04 51.51301(W)   ADJUSTED
 JV7032* NAD 83(2011) ELLIP HT-   131.629 (meters)        (06/27/12)   ADJUSTED
 JV7032* NAD 83(2011) EPOCH   -  2010.00
 JV7032* NAVD 88 ORTHO HEIGHT -   163.4   (meters)      536.    (feet) GPS OBS
 JV7032  ______________________________________________________________________
 JV7032  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7032  GEOID HEIGHT    -        -31.808 (meters)                     GEOID99
 JV7032  GEOID HEIGHT    -        -31.825 (meters)                     GEOID18
 JV7032  NAD 83(2011) X  -  1,105,410.674 (meters)                     COMP
 JV7032  NAD 83(2011) Y  - -4,819,122.958 (meters)                     COMP
 JV7032  NAD 83(2011) Z  -  4,015,935.913 (meters)                     COMP
 JV7032  LAPLACE CORR    -         -1.26  (seconds)                    DEFLEC18
 JV7032
 JV7032  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7032  Standards:
 JV7032         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7032            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7032  -------------------------------------------------------------------
 JV7032  NETWORK    1.50   1.78           0.65   0.56   0.91     -0.20495715
 JV7032  -------------------------------------------------------------------
 JV7032  Click here for local accuracies and other accuracy information.
 JV7032
 JV7032.The horizontal coordinates were established by GPS observations
 JV7032.and adjusted by the National Geodetic Survey in June 2012.
 JV7032
 JV7032.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7032.been affixed to the stable North American tectonic plate. See 
 JV7032.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7032
 JV7032.The horizontal coordinates are valid at the epoch date displayed above
 JV7032.which is a decimal equivalence of Year/Month/Day.
 JV7032
 JV7032.The orthometric height was determined by GPS observations and a
 JV7032.high-resolution geoid model.
 JV7032
 JV7032.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7032.GEOID18 height accuracy estimate available here.
 JV7032
 JV7032.Click photographs - Photos may exist for this station.
 JV7032
 JV7032.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7032
 JV7032.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7032
 JV7032.The ellipsoidal height was determined by GPS observations
 JV7032.and is referenced to NAD 83.
 JV7032
 JV7032. The following values were computed from the NAD 83(2011) position.
 JV7032
 JV7032;                    North         East     Units Scale Factor Converg.
 JV7032;SPC MD       -   178,351.466   393,012.605   MT  0.99997386   -0 03 03.0
 JV7032;SPC MD       -   585,141.43  1,289,408.85   sFT  0.99997386   -0 03 03.0
 JV7032;UTM  18      - 4,349,171.841   320,492.043   MT  0.99999677   -1 19 03.5
 JV7032
 JV7032!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7032!SPC MD       -   0.99997935  x   0.99997386  =   0.99995321
 JV7032!UTM  18      -   0.99997935  x   0.99999677  =   0.99997612
 JV7032
 JV7032_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2049249171(NAD 83)
 JV7032
 JV7032                          SUPERSEDED SURVEY CONTROL
 JV7032
 JV7032  NAD 83(2007)-  39 16 23.94794(N)    077 04 51.51363(W) AD(2002.00) 0
 JV7032  ELLIP H (02/10/07)  131.650  (m)                       GP(2002.00)    
 JV7032  ELLIP H (08/30/02)  131.647  (m)                       GP(       ) 4 2
 JV7032  NAD 83(1991)-  39 16 23.94776(N)    077 04 51.51387(W) AD(       ) 1
 JV7032  ELLIP H (02/23/93)  131.537  (m)                       GP(       ) 4 2
 JV7032  NGVD 29 (02/23/93)  163.6    (m)  GEOID90  model used  GPS OBS        
 JV7032
 JV7032.Superseded values are not recommended for survey control.
 JV7032
 JV7032.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7032.See file dsdata.pdf to determine how the superseded data were derived.
 JV7032
 JV7032_MARKER: DD = SURVEY DISK
 JV7032_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7032_STAMPING: 3230001 1976
 JV7032_MARK LOGO: MD-027
 JV7032_PROJECTION: RECESSED 8 CENTIMETERS
 JV7032_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 JV7032_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7032+STABILITY: SURFACE MOTION
 JV7032_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7032+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7032
 JV7032  HISTORY     - Date     Condition        Report By
 JV7032  HISTORY     - 1976     MONUMENTED       MD-027
 JV7032  HISTORY     - 19901125 GOOD             MD-027
 JV7032  HISTORY     - 19910925 GOOD
 JV7032  HISTORY     - 20000915 GOOD             MD-027
 JV7032
 JV7032                          STATION DESCRIPTION
 JV7032
 JV7032'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7032'THE STATION IS LOCATED 5.4 KM (3.35 MI) NORTH OF UNITY AND 8.2 KM
 JV7032'(5.10 MI) WEST OF GLENELG. OWNERSHIP-- COUNTY ROAD RIGHT OF WAY.
 JV7032'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 650 AND
 JV7032'STATE HIGHWAY 97, LOCATED IN SUNSHINE, MONTGOMERY COUNTY, GO 3.0 KM
 JV7032'(1.85 MI) NORTH ON STATE HIGHWAY 97 TO JENNINGS CHAPPEL ROAD, TURN
 JV7032'LEFT AND GO 2.6 KM (1.60 MI) ON JENNINGS CHAPPEL ROAD TO A FORKED
 JV7032'INTERSECTION, FOLLOW THE LEFT FORK AND GO O.7 KM NORTHWEST ON
 JV7032'JENNINGS CHAPPEL ROAD TO THE MARK ON THE RIGHT. SET ON THE NORTH SIDE
 JV7032'OF GRAVEL DRIVEWAY ENTRANCE TO HARWOOD STATES.
 JV7032'THE STATION LIES 7.0 M (23.0 FT) SOUTHWESTFROM THE CENTERLINE OF
 JV7032'JENNING CHAPPEL, 2.7 M (8.9 FT) EAST FROM A 24 INCH HICKORY TREE, 8.6
 JV7032'M (28.2 FT) SOUTHEAST FROM THE NORTHEAST CORNER OF A CURVED BRICKWALL
 JV7032'ON THE NORTH SIDE OF THE DRIVEWAY AND 16.8 M (55.1 FT) NORTH FROM THE
 JV7032'SOUTHEAST CORNER OF A BRICK PILLAR AT THE SOUTH END OF A CURVED BRICK
 JV7032'WALL ON THE SOUTH SIDE OF THE DRIVEWAY.
 JV7032'STATION IS A STANDARD HOWARD COUNTY SURVEY DISC, SET ON TOP OF A 20 CM
 JV7032'DIAMETER ROUND CONCRETE MONUMENT, RECESSED 10 CM FRM THE GROUND, IT
 JV7032'IS STAMPED 3230001 1976.
 JV7032'COMMENT--NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV7032'INCLUDED IN THIS GPS SURVEY PROJECT.
 JV7032
 JV7032                          STATION RECOVERY (1991)
 JV7032
 JV7032'RECOVERED 1991
 JV7032'RECOVERED IN GOOD CONDITION.
 JV7032
 JV7032                          STATION RECOVERY (2000)
 JV7032
 JV7032'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7032'REPORT BY HOWARD COUNTY , 2000 RECOVERED AS DESCRIBED IN GOOD
 JV7032'CONDITION
 JV7032'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7033 ***********************************************************************
 JV7033  DESIGNATION -  32 43 015
 JV7033  PID         -  JV7033
 JV7033  STATE/COUNTY-  MD/HOWARD
 JV7033  COUNTRY     -  US
 JV7033  USGS QUAD   -  ELLICOTT CITY (2016)
 JV7033
 JV7033                         *CURRENT SURVEY CONTROL
 JV7033  ______________________________________________________________________
 JV7033* NAD 83(2011) POSITION- 39 16 27.12303(N) 076 48 19.51481(W)   ADJUSTED
 JV7033* NAD 83(2011) ELLIP HT-    94.890 (meters)        (06/27/12)   ADJUSTED
 JV7033* NAD 83(2011) EPOCH   -  2010.00
 JV7033* NAVD 88 ORTHO HEIGHT -   127.1   (meters)      417.    (feet) GPS OBS
 JV7033  ______________________________________________________________________
 JV7033  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7033  GEOID HEIGHT    -        -33.099 (meters)                     GEOID93
 JV7033  GEOID HEIGHT    -        -32.217 (meters)                     GEOID18
 JV7033  NAD 83(2011) X  -  1,128,553.976 (meters)                     COMP
 JV7033  NAD 83(2011) Y  - -4,813,662.907 (meters)                     COMP
 JV7033  NAD 83(2011) Z  -  4,015,988.459 (meters)                     COMP
 JV7033  LAPLACE CORR    -         -3.39  (seconds)                    DEFLEC18
 JV7033
 JV7033  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7033  Standards:
 JV7033         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7033            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7033  -------------------------------------------------------------------
 JV7033  NETWORK    0.53   0.86           0.24   0.19   0.44     -0.05837363
 JV7033  -------------------------------------------------------------------
 JV7033  Click here for local accuracies and other accuracy information.
 JV7033
 JV7033.The horizontal coordinates were established by GPS observations
 JV7033.and adjusted by the National Geodetic Survey in June 2012.
 JV7033
 JV7033.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7033.been affixed to the stable North American tectonic plate. See 
 JV7033.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7033
 JV7033.The horizontal coordinates are valid at the epoch date displayed above
 JV7033.which is a decimal equivalence of Year/Month/Day.
 JV7033
 JV7033.The orthometric height was determined by GPS observations and a
 JV7033.high-resolution geoid model.
 JV7033
 JV7033.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7033.GEOID18 height accuracy estimate available here.
 JV7033
 JV7033.Click photographs - Photos may exist for this station.
 JV7033
 JV7033.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7033
 JV7033.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7033
 JV7033.The ellipsoidal height was determined by GPS observations
 JV7033.and is referenced to NAD 83.
 JV7033
 JV7033. The following values were computed from the NAD 83(2011) position.
 JV7033
 JV7033;                    North         East     Units Scale Factor Converg.
 JV7033;SPC MD       -   178,464.176   416,789.997   MT  0.99997397   +0 07 19.6
 JV7033;SPC MD       -   585,511.22  1,367,418.52   sFT  0.99997397   +0 07 19.6
 JV7033;UTM  18      - 4,348,759.181   344,265.469   MT  0.99989863   -1 08 35.2
 JV7033
 JV7033!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7033!SPC MD       -   0.99998511  x   0.99997397  =   0.99995908
 JV7033!UTM  18      -   0.99998511  x   0.99989863  =   0.99988374
 JV7033
 JV7033_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4426548759(NAD 83)
 JV7033
 JV7033                          SUPERSEDED SURVEY CONTROL
 JV7033
 JV7033  NAD 83(2007)-  39 16 27.12329(N)    076 48 19.51569(W) AD(2002.00) 0
 JV7033  ELLIP H (02/10/07)   94.913  (m)                       GP(2002.00)    
 JV7033  ELLIP H (08/30/02)   94.914  (m)                       GP(       ) 4 2
 JV7033  NAD 83(1991)-  39 16 27.12278(N)    076 48 19.51554(W) AD(       ) 1
 JV7033  ELLIP H (02/23/93)   94.853  (m)                       GP(       ) 4 2
 JV7033  NGVD 29 (02/23/93)  127.3    (m)  GEOID90  model used  GPS OBS        
 JV7033
 JV7033.Superseded values are not recommended for survey control.
 JV7033
 JV7033.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7033.See file dsdata.pdf to determine how the superseded data were derived.
 JV7033
 JV7033_MARKER: DD = SURVEY DISK
 JV7033_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7033_STAMPING: 32 43 015 2/91
 JV7033_MARK LOGO: MD-027
 JV7033_PROJECTION: FLUSH
 JV7033_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 JV7033_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7033+STABILITY: SURFACE MOTION
 JV7033_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7033+SATELLITE: SATELLITE OBSERVATIONS - September 22, 2003
 JV7033
 JV7033  HISTORY     - Date     Condition        Report By
 JV7033  HISTORY     - 1991     MONUMENTED       MD-027
 JV7033  HISTORY     - 19950206 GOOD             MCCRON
 JV7033  HISTORY     - 20000915 GOOD             MD-027
 JV7033  HISTORY     - 20030922 GOOD             USPSQD
 JV7033  HISTORY     - 20061001 GOOD             GEOCAC
 JV7033
 JV7033                          STATION DESCRIPTION
 JV7033
 JV7033'DESCRIBED BY HOWARD COUNTY MARYLAND 1991
 JV7033'THE STATION IS LOCATED 10.9 MI (17.5 KM) WEST OF BALTIMORE CITY, 4.9
 JV7033'MI (7.9 KM) NNE OF THE CITY OF COLUMBIA, AND IN THE CITY OF ELLICOTT
 JV7033'CITY.
 JV7033'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 29 AND US
 JV7033'ROUTE 40, GO .2 MI (0.3 KM) EAST ON ROUTE 40 TO INTERSECTION WITH
 JV7033'ROGERS AVENUE, TURN SOUTH ON ROGERS AVENUE FOR 0.15 MI (0.24 KM) TO
 JV7033'THE HOWARD COUNTY OFFICE COMPLEX ON YOUR RIGHT.  STATION LIES ON THE
 JV7033'PARKING LOT SOUTH OF CARROLL BUILDING IN THE SAID COMPLEX.
 JV7033'THE STATION IS ON AN ISLAND ATOP A BANK AT THE SOUTHEAST EDGE OF THE
 JV7033'PARKING LOT.  IT IS 109.3 FT (33.3 M) SOUTH OF THE SOUTH FACE OF
 JV7033'CARROLL BUILDING, 65.4 FT (19.9 M) NORTHWEST OF GAS AND ELECTRIC
 JV7033'POWER COMPANY POLE NUMBER 494293, AND 14. FT (4.3 M) SOUTHWEST OF A
 JV7033'FIRE HYDRANT.
 JV7033'THE STATION IS A STANDARD HOWARD COUNTY SURVEY CONTROL DISC, ON TOP OF
 JV7033'A ROUND CONCRETE MONUMENT ABOUT .75 FR IN DIAMETER, THE DISC IS FLUSH
 JV7033'WITH GROUND.  THE DISC IS STAMPED HOWARD COUNTY CONTROL 3243015 2/91.
 JV7033'OWNERSHIP --COUNTY PROPERTY
 JV7033'COMMENT--NO AZIMUTH MARKS OR REFERENCE MARK STATIONS FOR THIS STATION
 JV7033'WERE INCLUDED IN THIS GPS PROJECT.
 JV7033
 JV7033                          STATION RECOVERY (1995)
 JV7033
 JV7033'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV7033'RECOVERED AS DESCRIBED.
 JV7033
 JV7033                          STATION RECOVERY (2000)
 JV7033
 JV7033'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7033'RECOVERY BY HOWARD COUNTY 2000 FOUND AS DESCRIBED IN GOOD
 JV7033'CONDITION A  PERMANENT METALIC TRIPOD WAS BUILT OVER THE STATION
 JV7033'IN ORDER  TO PERMIT ITS USE  AS AN UNMANNED RTK STATION.
 JV7033'
 JV7033
 JV7033                          STATION RECOVERY (2003)
 JV7033
 JV7033'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV7033'RECOVERED IN GOOD CONDITION.  TO REACH THE STATION FROM THE JUNCTION
 JV7033'OF ROGERS AVENUE AND HIGHWAY 40, GO SOUTH 0.35 MILE TO WHERE ROGERS
 JV7033'AVENUE TURNS RIGHT AND COURT HOUSE ROAD CURVES LEFT. GO LEFT ON COURT
 JV7033'HOUSE ROAD FOR 0.1 MILE TO THE ENTRANCE TO THE HOWARD COUNTY COMPLEX
 JV7033'ON THE RIGHT.
 JV7033'TURN RIGHT AND THEN LEFT BEHIND THE RED BRICK HOWARD BUILDING AT 3430
 JV7033'COURT HOUSE DRIVE.  STAY LEFT AND CONTINUE PAST THE TAN COLORED
 JV7033'CARROLL BUILDING AT 3450 COURT HOUSE DRIVE TO THE PARKING AREA.
 JV7033
 JV7033                          STATION RECOVERY (2006)
 JV7033
 JV7033'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JV7033'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5391 ***********************************************************************
 JV5391  DESIGNATION -  32 A 1961
 JV5391  PID         -  JV5391
 JV5391  STATE/COUNTY-  MD/BALTIMORE
 JV5391  COUNTRY     -  US
 JV5391  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5391
 JV5391                         *CURRENT SURVEY CONTROL
 JV5391  ______________________________________________________________________
 JV5391* NAD 83(1991) POSITION- 39 19 09.97067(N) 076 24 16.39121(W)   ADJUSTED
 JV5391* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5391  ______________________________________________________________________
 JV5391  GEOID HEIGHT    -        -33.053 (meters)                     GEOID18
 JV5391  LAPLACE CORR    -         -2.37  (seconds)                    DEFLEC18
 JV5391  HORZ ORDER      -  SECOND
 JV5391
 JV5391.This mark is at Martin State Airport (MTN)
 JV5391
 JV5391.The horizontal coordinates were established by classical geodetic methods
 JV5391.and adjusted by the National Geodetic Survey in January 1992.
 JV5391
 JV5391.The orthometric height was scaled from a topographic map.
 JV5391
 JV5391.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5391.GEOID18 height accuracy estimate available here.
 JV5391
 JV5391.Click photographs - Photos may exist for this station.
 JV5391
 JV5391.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5391
 JV5391. The following values were computed from the NAD 83(1991) position.
 JV5391
 JV5391;                    North         East     Units Scale Factor Converg.
 JV5391;SPC MD       -   183,635.720   451,347.284   MT  0.99997977   +0 22 25.4
 JV5391;SPC MD       -   602,478.19  1,480,795.21   sFT  0.99997977   +0 22 25.4
 JV5391;UTM  18      - 4,353,166.201   378,923.627   MT  0.99978050   -0 53 24.3
 JV5391
 JV5391!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5391!SPC MD       -   1.00000476  x   0.99997977  =   0.99998452
 JV5391!UTM  18      -   1.00000476  x   0.99978050  =   0.99978525
 JV5391
 JV5391:                Primary Azimuth Mark                     Grid Az
 JV5391:SPC MD       -  BALTIMORE GAS CRANE STA STACK            081 50 23.4
 JV5391:UTM  18      -  BALTIMORE GAS CRANE STA STACK            083 06 13.1
 JV5391
 JV5391_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7892353166(NAD 83)
 JV5391
 JV5391|---------------------------------------------------------------------|
 JV5391| PID    Reference Object                     Distance      Geod. Az  |
 JV5391|                                                           dddmmss.s |
 JV5391| JV5331 BALTIMORE GAS CRANE STA STACK       APPROX. 3.4 KM 0821248.8 |
 JV5391| JV5390 32 B 1961                           155.017 METERS 23136     |
 JV5391|---------------------------------------------------------------------|
 JV5391
 JV5391                          SUPERSEDED SURVEY CONTROL
 JV5391
 JV5391  NAD 83(1986)-  39 19 09.96181(N)    076 24 16.40397(W) AD(       ) 2
 JV5391  NAD 27      -  39 19 09.57990(N)    076 24 17.54800(W) AD(       ) 2
 JV5391
 JV5391.Superseded values are not recommended for survey control.
 JV5391
 JV5391.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5391.See file dsdata.pdf to determine how the superseded data were derived.
 JV5391
 JV5391_MARKER: N = NAIL
 JV5391_SETTING: 0 = UNSPECIFIED SETTING
 JV5391_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5391
 JV5391  HISTORY     - Date     Condition        Report By
 JV5391  HISTORY     - 1961     MONUMENTED       CGS
 JV5391  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV5391
 JV5391                          STATION DESCRIPTION
 JV5391
 JV5391'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JV5391'THE STATION IS LOCATED ON THE SOUTHEAST EDGE OF THE NORTHEAST
 JV5391'APPROACH TO THE SOUTHEAST END OF THE MAIN RUNWAY, 2.93 FEET
 JV5391'NORTH-NORTHWEST OF THE SOUTH-SOUTHEAST ONE OF THREE PK NAILS, 3.18
 JV5391'FEET SOUTH-SOUTHEAST OF THE NORTH-NORTHWEST ONE OF THREE PK NAILS,
 JV5391'10.0 FEET NORTHWEST OF THE SOUTHEAST EDGE OF THE CONCRETE TAXI
 JV5391'APPROACH TO THE SOUTHEAST END OF THE MAIN RUNWAY, 18.0 FEET
 JV5391'NORTHWEST OF THE APPROXIMATE CENTER OF A STEEL MAN HOLE LID AND
 JV5391'248.0 FEET NORTHEAST OF THE APPROXIMATE CENTER OF THE MAIN RUNWAY.
 JV5391'
 JV5391'THE STATION MARK, IS A PK NAIL HEAD WITH A CENTER PUNCH HOLE IN
 JV5391'THE APPROXIMATE CENTER CEMENTED IN A DRILL HOLE IN THE CONCRETE
 JV5391'APPROACH TO THE SOUTHEAST END OF THE MAIN RUNWAY AND FLUSH WITH
 JV5391'THE CONCRETE SURFACE.
 JV5391'
 JV5391'TO REACH THE STATION FROM THE STRAWBERRY POINT GATE ENTRANCE, GO
 JV5391'SOUTHEAST ALONG THE NORTHEAST SIDE OF THE STORAGE BUILDING FOR
 JV5391'ABOUT 700.0 FEET TO THE SOUTH APPROACH TO THE SOUTHEAST END OF THE
 JV5391'MAIN RUNWAY, TURN LEFT AND GO FOR ABOUT 450.0 FEET TO THE
 JV5391'SOUTHEAST END OF THE MAIN RUNWAY, CONTINUE STRAIGHT AHEAD FOR
 JV5391'ABOUT 250.0 FEET TO THE STATION ON THE RIGHT.
 JV5391'
 JV5391'HEIGHT OF LIGHT ABOVE STATION MARK 1.29 METERS.
 JV5391
 JV5391                          STATION RECOVERY (1994)
 JV5391
 JV5391'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5391'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0612 ***********************************************************************
 JV0612  DESIGNATION -  32 A BORR
 JV0612  PID         -  JV0612
 JV0612  STATE/COUNTY-  MD/BALTIMORE
 JV0612  COUNTRY     -  US
 JV0612  USGS QUAD   -  RELAY (2016)
 JV0612
 JV0612                         *CURRENT SURVEY CONTROL
 JV0612  ______________________________________________________________________
 JV0612* NAD 83(1986) POSITION- 39 13 37.     (N) 076 41 43.     (W)   SCALED
 JV0612* NAVD 88 ORTHO HEIGHT -    22.809 (meters)       74.83  (feet) ADJUSTED
 JV0612  ______________________________________________________________________
 JV0612  GEOID HEIGHT    -        -32.572 (meters)                     GEOID18
 JV0612  DYNAMIC HEIGHT  -         22.797 (meters)       74.79  (feet) COMP
 JV0612  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV0612
 JV0612  VERT ORDER      -  FIRST     CLASS II
 JV0612
 JV0612.The horizontal coordinates were scaled from a map and have
 JV0612.an estimated accuracy of +/- 6 seconds.
 JV0612
 JV0612.The orthometric height was determined by differential leveling and
 JV0612.adjusted by the NATIONAL GEODETIC SURVEY
 JV0612.in June 1991.
 JV0612
 JV0612.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0612.GEOID18 height accuracy estimate available here.
 JV0612
 JV0612.Click photographs - Photos may exist for this station.
 JV0612
 JV0612.The dynamic height is computed by dividing the NAVD 88
 JV0612.geopotential number by the normal gravity value computed on the
 JV0612.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0612.degrees latitude (g = 980.6199 gals.).
 JV0612
 JV0612.The modeled gravity was interpolated from observed gravity values.
 JV0612
 JV0612;                    North         East    Units  Estimated Accuracy
 JV0612;SPC MD       -   173,240.      426,310.      MT  (+/- 180 meters Scaled)
 JV0612
 JV0612_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ536433(NAD 83)
 JV0612
 JV0612                          SUPERSEDED SURVEY CONTROL
 JV0612
 JV0612  NGVD 29 (11/26/84)   23.032  (m)           75.56   (f) ADJUSTED    1 2
 JV0612
 JV0612.Superseded values are not recommended for survey control.
 JV0612
 JV0612.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0612.See file dsdata.pdf to determine how the superseded data were derived.
 JV0612
 JV0612_MARKER: Q = CHISELED SQUARE
 JV0612_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0612_SP_SET: STEP OF ABUTMENT
 JV0612_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0612
 JV0612  HISTORY     - Date     Condition        Report By
 JV0612  HISTORY     - 1903     MONUMENTED       BORR
 JV0612  HISTORY     - 1933     GOOD             CGS
 JV0612  HISTORY     - 1942     GOOD             CGS
 JV0612  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 JV0612
 JV0612                          STATION DESCRIPTION
 JV0612
 JV0612'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 JV0612'1 MI NE FROM RELAY.
 JV0612'1.0 MILE NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV0612'RELAY, BALTIMORE COUNTY, 0.5 MILE NORTH OF THE STATION AT ST. DENIS,
 JV0612'AT THE BRIDGE CARRYING U.S. HIGHWAY 1 VER THE TRACKS, ON THE BOTTOM
 JV0612'STEP AT THE NORTH END OF THE NORTH WING WALL OF THE WEST ABUTMENT,
 JV0612'40 FEET WEST OF THE SOUTH-BOUND MAIN TRACK, AND ABOUT 1-1/2 FEET
 JV0612'HIGHER THAN THE TRACK.  A CHISELED SQUARE.
 JV0612
 JV0612                          STATION RECOVERY (1942)
 JV0612
 JV0612'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV0612'RECOVERED IN GOOD CONDITION.
 JV0612
 JV0612                          STATION RECOVERY (2003)
 JV0612
 JV0612'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0612'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5390 ***********************************************************************
 JV5390  DESIGNATION -  32 B 1961
 JV5390  PID         -  JV5390
 JV5390  STATE/COUNTY-  MD/BALTIMORE
 JV5390  COUNTRY     -  US
 JV5390  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5390
 JV5390                         *CURRENT SURVEY CONTROL
 JV5390  ______________________________________________________________________
 JV5390* NAD 83(1991) POSITION- 39 19 06.84883(N) 076 24 21.46317(W)   ADJUSTED
 JV5390* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5390  ______________________________________________________________________
 JV5390  GEOID HEIGHT    -        -33.051 (meters)                     GEOID18
 JV5390  LAPLACE CORR    -         -2.36  (seconds)                    DEFLEC18
 JV5390  HORZ ORDER      -  SECOND
 JV5390
 JV5390.This mark is at Martin State Airport (MTN)
 JV5390
 JV5390.The horizontal coordinates were established by classical geodetic methods
 JV5390.and adjusted by the National Geodetic Survey in January 1992.
 JV5390
 JV5390.The orthometric height was scaled from a topographic map.
 JV5390
 JV5390.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5390.GEOID18 height accuracy estimate available here.
 JV5390
 JV5390.Click photographs - Photos may exist for this station.
 JV5390
 JV5390.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5390
 JV5390. The following values were computed from the NAD 83(1991) position.
 JV5390
 JV5390;                    North         East     Units Scale Factor Converg.
 JV5390;SPC MD       -   183,538.657   451,226.420   MT  0.99997965   +0 22 22.2
 JV5390;SPC MD       -   602,159.74  1,480,398.68   sFT  0.99997965   +0 22 22.2
 JV5390;UTM  18      - 4,353,071.846   378,800.677   MT  0.99978086   -0 53 27.5
 JV5390
 JV5390!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5390!SPC MD       -   1.00000475  x   0.99997965  =   0.99998440
 JV5390!UTM  18      -   1.00000475  x   0.99978086  =   0.99978561
 JV5390
 JV5390:                Primary Azimuth Mark                     Grid Az
 JV5390:SPC MD       -  BALTIMORE GAS CRANE STA STACK            080 34 07.7
 JV5390:UTM  18      -  BALTIMORE GAS CRANE STA STACK            081 49 57.4
 JV5390
 JV5390_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7880053071(NAD 83)
 JV5390
 JV5390|---------------------------------------------------------------------|
 JV5390| PID    Reference Object                     Distance      Geod. Az  |
 JV5390|                                                           dddmmss.s |
 JV5390| JV5391 32 A 1961                           155.017 METERS 05136     |
 JV5390| JV5331 BALTIMORE GAS CRANE STA STACK       APPROX. 3.6 KM 0805629.9 |
 JV5390| JV5386 A POINT 1961                        150.706 METERS 31128     |
 JV5390|---------------------------------------------------------------------|
 JV5390
 JV5390                          SUPERSEDED SURVEY CONTROL
 JV5390
 JV5390  NAD 83(1986)-  39 19 06.84034(N)    076 24 21.47586(W) AD(       ) 2
 JV5390  NAD 27      -  39 19 06.45800(N)    076 24 22.61950(W) AD(       ) 2
 JV5390
 JV5390.Superseded values are not recommended for survey control.
 JV5390
 JV5390.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5390.See file dsdata.pdf to determine how the superseded data were derived.
 JV5390
 JV5390_MARKER: N = NAIL
 JV5390_SETTING: 0 = UNSPECIFIED SETTING
 JV5390_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5390
 JV5390  HISTORY     - Date     Condition        Report By
 JV5390  HISTORY     - 1961     MONUMENTED       CGS
 JV5390  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV5390
 JV5390                          STATION DESCRIPTION
 JV5390
 JV5390'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JV5390'THE STATION IS LOCATED ON THE NORTHWEST EDGE OF THE SOUTH
 JV5390'APPROACH TO THE SOUTHEAST END OF THE MAIN RUNWAY, 2.62 FEET
 JV5390'SOUTH-SOUTHEAST OF THE NORTH-NORTHWEST ONE OF THREE PK NAILHEADS,
 JV5390'3.42 FEET NORTH-NORTHWEST OF THE SOUTH-SOUTHEAST ONE OF THREE PK
 JV5390'NAIL HEADS, 8.05 FEET SOUTH-SOUTHEAST OF THE NORTHWEST EDGE OF THE
 JV5390'RUNWAY APPROACH, 20.0 FEET SOUTH-SOUTHEAST OF THE APPROXIMATE
 JV5390'CENTER OF A STEEL MAN HOLE LID AND 256.0 FEET SOUTHWEST OF THE
 JV5390'APPROXIMATE CENTER OF THE MAIN RUNWAY.
 JV5390'
 JV5390'THE STATION MARK, IS A PK NAIL HEAD WITH A CENTER PUNCH HOLE IN
 JV5390'THE APPROXIMATE CENTER, CEMENTED IN A DRILL HOLE IN THE CONCRETE
 JV5390'RUNWAY APPROACH AND IS FLUSH WITH THE CONCRETE SURFACE.
 JV5390'
 JV5390'TO REACH THE STATION FROM THE STRAWBERRY POINT GATE ENTRANCE, GO
 JV5390'SOUTHEAST ALONG THE NORTHEAST SIDE OF THE STORAGE BUILDING FOR
 JV5390'ABOUT 700.0 TO THE SOUTH APPROACH TO THE SOUTHEAST END OF THE MAIN
 JV5390'RUNWAY, TURN LEFT AND GO ABOUT 400.0 FEET TO THE STATION ON THE LEFT.
 JV5390'
 JV5390'HEIGHT OF LIGHT ABOVE STATION MARK 1.29 METERS.
 JV5390
 JV5390                          STATION RECOVERY (1994)
 JV5390
 JV5390'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5390'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2540 ***********************************************************************
 JV2540  DESIGNATION -  320 RESET
 JV2540  PID         -  JV2540
 JV2540  STATE/COUNTY-  MD/FREDERICK
 JV2540  COUNTRY     -  US
 JV2540  USGS QUAD   -  WALKERSVILLE (2016)
 JV2540
 JV2540                         *CURRENT SURVEY CONTROL
 JV2540  ______________________________________________________________________
 JV2540* NAD 83(1986) POSITION- 39 29 10.4    (N) 077 21 09.6    (W)   HD_HELD2
 JV2540* NAVD 88 ORTHO HEIGHT -    97.10  (meters)      318.6   (feet) RESET
 JV2540  ______________________________________________________________________
 JV2540  GEOID HEIGHT    -        -32.794 (meters)                     GEOID18
 JV2540  VERT ORDER      -  THIRD
 JV2540
 JV2540.The horizontal coordinates were established by autonomous hand held GPS
 JV2540.observations and have an estimated accuracy of +/- 10 meters.
 JV2540
 JV2540.The orthometric height was computed from unverified reset data.
 JV2540
 JV2540.No vertical observational check was made to the station.
 JV2540
 JV2540.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2540.GEOID18 height accuracy estimate available here.
 JV2540
 JV2540.Click photographs - Photos may exist for this station.
 JV2540
 JV2540;                    North         East    Units  Estimated Accuracy
 JV2540;SPC MD       -   202,044.      369,660.      MT  (+/- 10 meters HH2 GPS)
 JV2540
 JV2540_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9766973377(NAD 83)
 JV2540
 JV2540                          SUPERSEDED SURVEY CONTROL
 JV2540
 JV2540  NGVD 29 (??/??/??)   97.32   (m)          319.3    (f) RESET       3  
 JV2540
 JV2540.Superseded values are not recommended for survey control.
 JV2540
 JV2540.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2540.See file dsdata.pdf to determine how the superseded data were derived.
 JV2540
 JV2540_MARKER: DB = BENCH MARK DISK
 JV2540_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2540_SP_SET: BUILDING
 JV2540_STAMPING: MARYLAND 320 RESET 1955
 JV2540_MARK LOGO: USGS
 JV2540_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2540_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2540+SATELLITE: SATELLITE OBSERVATIONS - January 15, 2020
 JV2540
 JV2540  HISTORY     - Date     Condition        Report By
 JV2540  HISTORY     - 1955     MONUMENTED       USGS
 JV2540  HISTORY     - 19970811 GOOD             USPSQD
 JV2540  HISTORY     - 20100620 GOOD             GEOCAC
 JV2540  HISTORY     - 20200115 GOOD             WTBALL
 JV2540
 JV2540                          STATION DESCRIPTION
 JV2540
 JV2540'DESCRIBED BY US GEOLOGICAL SURVEY 1955
 JV2540'AT WALKERSVILLE.
 JV2540'AT WALKERSVILLE, FREDERICK COUNTY, ON THE NORTH SIDE OF
 JV2540'PENNSYLVANIA AVENUE, AT THE WALKERSVILLE SAVINGS BANK, 17 FEET
 JV2540'EAST OF THE MAIN ENTRANCE, 6 FEET EAST OF THE SOUTHEAST
 JV2540'CORNER OF THE BUILDING, AND ABOUT 3 FEET ABOVE THE SIDEWALK.
 JV2540'A U.S. GEOLOGICAL SURVEY STANDARD DISK, AND SET VERTICALLY.
 JV2540'NOTE-- THIS BENCH MARK WAS ESTABLISHED AND ITS ELEVATION
 JV2540'DETERMINED BY A U.S. GEOLOGICAL SURVEY ENGINEER IN FEBRUARY 1955.
 JV2540
 JV2540                          STATION RECOVERY (1997)
 JV2540
 JV2540'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV2540'RECOVERED IN GOOD CONDITION.
 JV2540
 JV2540                          STATION RECOVERY (2010)
 JV2540
 JV2540'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2540'RECOVERED IN GOOD CONDITION. BUILDING IS NOW THE ST. PAUL'S PARISH
 JV2540'HALL.
 JV2540
 JV2540                          STATION RECOVERY (2020)
 JV2540
 JV2540'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV2540'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2903 ***********************************************************************
 JV2903  DESIGNATION -  3200 WSSC
 JV2903  PID         -  JV2903
 JV2903  STATE/COUNTY-  MD/MONTGOMERY
 JV2903  COUNTRY     -  US
 JV2903  USGS QUAD   -  SENECA (2016)
 JV2903
 JV2903                         *CURRENT SURVEY CONTROL
 JV2903  ______________________________________________________________________
 JV2903* NAD 83(1986) POSITION- 39 04 55.     (N) 077 18 38.     (W)   SCALED
 JV2903* NAVD 88 ORTHO HEIGHT -   101.954 (meters)      334.49  (feet) ADJUSTED
 JV2903  ______________________________________________________________________
 JV2903  GEOID HEIGHT    -        -31.810 (meters)                     GEOID18
 JV2903  DYNAMIC HEIGHT  -        101.901 (meters)      334.32  (feet) COMP
 JV2903  MODELED GRAVITY -    980,100.5   (mgal)                       NAVD 88
 JV2903
 JV2903  VERT ORDER      -  SECOND    CLASS 0
 JV2903
 JV2903.The horizontal coordinates were scaled from a map and have
 JV2903.an estimated accuracy of +/- 6 seconds.
 JV2903
 JV2903.The orthometric height was determined by differential leveling and
 JV2903.adjusted by the NATIONAL GEODETIC SURVEY
 JV2903.in June 1991.
 JV2903
 JV2903.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2903.GEOID18 height accuracy estimate available here.
 JV2903
 JV2903.Click photographs - Photos may exist for this station.
 JV2903
 JV2903.The dynamic height is computed by dividing the NAVD 88
 JV2903.geopotential number by the normal gravity value computed on the
 JV2903.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2903.degrees latitude (g = 980.6199 gals.).
 JV2903
 JV2903.The modeled gravity was interpolated from observed gravity values.
 JV2903
 JV2903;                    North         East    Units  Estimated Accuracy
 JV2903;SPC MD       -   157,150.      373,130.      MT  (+/- 180 meters Scaled)
 JV2903
 JV2903_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ001284(NAD 83)
 JV2903
 JV2903                          SUPERSEDED SURVEY CONTROL
 JV2903
 JV2903  NGVD 29 (11/26/84)  102.176  (m)          335.22   (f) ADJUSTED    2 0
 JV2903
 JV2903.Superseded values are not recommended for survey control.
 JV2903
 JV2903.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2903.See file dsdata.pdf to determine how the superseded data were derived.
 JV2903
 JV2903_MARKER: B = BOLT
 JV2903_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2903_SP_SET: BRIDGE
 JV2903_STAMPING: WSSC BM 3200
 JV2903_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2903
 JV2903  HISTORY     - Date     Condition        Report By
 JV2903  HISTORY     - UNK      MONUMENTED       WSSC
 JV2903  HISTORY     - 1965     GOOD             WSSC
 JV2903
 JV2903                          STATION DESCRIPTION
 JV2903
 JV2903'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2903'1.7 MI E FROM SENCEA.
 JV2903'1.7 MI. E. ALONG STATE HWY. 112 FROM THE BRIDGE OVER SENECA
 JV2903'CREEK AT SENECA IN THE TOP AND CENTERLINE OF THE S.E. BRIDGE
 JV2903'WALL OVER A STREAM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2902 ***********************************************************************
 JV2902  DESIGNATION -  3201 WSSC
 JV2902  PID         -  JV2902
 JV2902  STATE/COUNTY-  MD/MONTGOMERY
 JV2902  COUNTRY     -  US
 JV2902  USGS QUAD   -  SENECA (2016)
 JV2902
 JV2902                         *CURRENT SURVEY CONTROL
 JV2902  ______________________________________________________________________
 JV2902* NAD 83(1986) POSITION- 39 05 14.     (N) 077 18 13.     (W)   SCALED
 JV2902* NAVD 88 ORTHO HEIGHT -   117.232 (meters)      384.62  (feet) ADJUSTED
 JV2902  ______________________________________________________________________
 JV2902  GEOID HEIGHT    -        -31.803 (meters)                     GEOID18
 JV2902  DYNAMIC HEIGHT  -        117.170 (meters)      384.42  (feet) COMP
 JV2902  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV2902
 JV2902  VERT ORDER      -  SECOND    CLASS 0
 JV2902
 JV2902.The horizontal coordinates were scaled from a map and have
 JV2902.an estimated accuracy of +/- 6 seconds.
 JV2902
 JV2902.The orthometric height was determined by differential leveling and
 JV2902.adjusted by the NATIONAL GEODETIC SURVEY
 JV2902.in June 1991.
 JV2902
 JV2902.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2902.GEOID18 height accuracy estimate available here.
 JV2902
 JV2902.Click photographs - Photos may exist for this station.
 JV2902
 JV2902.The dynamic height is computed by dividing the NAVD 88
 JV2902.geopotential number by the normal gravity value computed on the
 JV2902.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2902.degrees latitude (g = 980.6199 gals.).
 JV2902
 JV2902.The modeled gravity was interpolated from observed gravity values.
 JV2902
 JV2902;                    North         East    Units  Estimated Accuracy
 JV2902;SPC MD       -   157,730.      373,730.      MT  (+/- 180 meters Scaled)
 JV2902
 JV2902_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ007289(NAD 83)
 JV2902
 JV2902                          SUPERSEDED SURVEY CONTROL
 JV2902
 JV2902  NGVD 29 (11/26/84)  117.453  (m)          385.34   (f) ADJUSTED    2 0
 JV2902
 JV2902.Superseded values are not recommended for survey control.
 JV2902
 JV2902.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2902.See file dsdata.pdf to determine how the superseded data were derived.
 JV2902
 JV2902_MARKER: B = BOLT
 JV2902_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2902_SP_SET: HEADWALL
 JV2902_STAMPING: WSSC BM 3201
 JV2902_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2902
 JV2902  HISTORY     - Date     Condition        Report By
 JV2902  HISTORY     - UNK      MONUMENTED       WSSC
 JV2902  HISTORY     - 1965     GOOD             WSSC
 JV2902
 JV2902                          STATION DESCRIPTION
 JV2902
 JV2902'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2902'2.2 MI E FROM SENCEA.
 JV2902'2.2 MI. E ALONG STATE HWY. 112 FROM THE BRIDGE OVER SENECA CREEK
 JV2902'AT SENECA ABOUT 300 FT. S.W. OF THE JUNCTION WITH ESWORTHY ROAD
 JV2902'IN THE TOP AND CENTER LIEN OF THE S.E. CONCRETE HEADWALL NEAR
 JV2902'POLE 47.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2898 ***********************************************************************
 JV2898  DESIGNATION -  3202 WSSC
 JV2898  PID         -  JV2898
 JV2898  STATE/COUNTY-  MD/MONTGOMERY
 JV2898  COUNTRY     -  US
 JV2898  USGS QUAD   -  SENECA (2016)
 JV2898
 JV2898                         *CURRENT SURVEY CONTROL
 JV2898  ______________________________________________________________________
 JV2898* NAD 83(1986) POSITION- 39 05 37.     (N) 077 17 54.     (W)   SCALED
 JV2898* NAVD 88 ORTHO HEIGHT -   121.961 (meters)      400.13  (feet) ADJUSTED
 JV2898  ______________________________________________________________________
 JV2898  GEOID HEIGHT    -        -31.800 (meters)                     GEOID18
 JV2898  DYNAMIC HEIGHT  -        121.897 (meters)      399.92  (feet) COMP
 JV2898  MODELED GRAVITY -    980,102.0   (mgal)                       NAVD 88
 JV2898
 JV2898  VERT ORDER      -  SECOND    CLASS 0
 JV2898
 JV2898.The horizontal coordinates were scaled from a map and have
 JV2898.an estimated accuracy of +/- 6 seconds.
 JV2898
 JV2898.The orthometric height was determined by differential leveling and
 JV2898.adjusted by the NATIONAL GEODETIC SURVEY
 JV2898.in June 1991.
 JV2898
 JV2898.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2898.GEOID18 height accuracy estimate available here.
 JV2898
 JV2898.Click photographs - Photos may exist for this station.
 JV2898
 JV2898.The dynamic height is computed by dividing the NAVD 88
 JV2898.geopotential number by the normal gravity value computed on the
 JV2898.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2898.degrees latitude (g = 980.6199 gals.).
 JV2898
 JV2898.The modeled gravity was interpolated from observed gravity values.
 JV2898
 JV2898;                    North         East    Units  Estimated Accuracy
 JV2898;SPC MD       -   158,440.      374,190.      MT  (+/- 180 meters Scaled)
 JV2898
 JV2898_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ012296(NAD 83)
 JV2898
 JV2898                          SUPERSEDED SURVEY CONTROL
 JV2898
 JV2898  NGVD 29 (11/26/84)  122.183  (m)          400.86   (f) ADJUSTED    2 0
 JV2898
 JV2898.Superseded values are not recommended for survey control.
 JV2898
 JV2898.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2898.See file dsdata.pdf to determine how the superseded data were derived.
 JV2898
 JV2898_MARKER: B = BOLT
 JV2898_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2898_SP_SET: HEADWALL
 JV2898_STAMPING: WSSC BM 3202
 JV2898_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2898
 JV2898  HISTORY     - Date     Condition        Report By
 JV2898  HISTORY     - UNK      MONUMENTED       WSSC
 JV2898  HISTORY     - 1965     GOOD             WSSC
 JV2898
 JV2898                          STATION DESCRIPTION
 JV2898
 JV2898'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2898'0.8 MI S FROM DARNESTOWN.
 JV2898'0.8 MI. S. ALONG STATE HWY. 112 FROM ITS JUNCTION WITH STATE HWY
 JV2898'28 AT DARNESTOWN, IN THE TOP AND CENTERLINE OF THE S.E. CONCRETE
 JV2898'HEADWALL NEAR A PRIVATE DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2899 ***********************************************************************
 JV2899  DESIGNATION -  3203 WSSC
 JV2899  PID         -  JV2899
 JV2899  STATE/COUNTY-  MD/MONTGOMERY
 JV2899  COUNTRY     -  US
 JV2899  USGS QUAD   -  SENECA (2016)
 JV2899
 JV2899                         *CURRENT SURVEY CONTROL
 JV2899  ______________________________________________________________________
 JV2899* NAD 83(1986) POSITION- 39 06 02.     (N) 077 17 39.     (W)   SCALED
 JV2899* NAVD 88 ORTHO HEIGHT -   129.148 (meters)      423.71  (feet) ADJUSTED
 JV2899  ______________________________________________________________________
 JV2899  GEOID HEIGHT    -        -31.799 (meters)                     GEOID18
 JV2899  DYNAMIC HEIGHT  -        129.080 (meters)      423.49  (feet) COMP
 JV2899  MODELED GRAVITY -    980,102.3   (mgal)                       NAVD 88
 JV2899
 JV2899  VERT ORDER      -  SECOND    CLASS 0
 JV2899
 JV2899.The horizontal coordinates were scaled from a map and have
 JV2899.an estimated accuracy of +/- 6 seconds.
 JV2899
 JV2899.The orthometric height was determined by differential leveling and
 JV2899.adjusted by the NATIONAL GEODETIC SURVEY
 JV2899.in June 1991.
 JV2899
 JV2899.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2899.GEOID18 height accuracy estimate available here.
 JV2899
 JV2899.Click photographs - Photos may exist for this station.
 JV2899
 JV2899.The dynamic height is computed by dividing the NAVD 88
 JV2899.geopotential number by the normal gravity value computed on the
 JV2899.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2899.degrees latitude (g = 980.6199 gals.).
 JV2899
 JV2899.The modeled gravity was interpolated from observed gravity values.
 JV2899
 JV2899;                    North         East    Units  Estimated Accuracy
 JV2899;SPC MD       -   159,210.      374,560.      MT  (+/- 180 meters Scaled)
 JV2899
 JV2899_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ016304(NAD 83)
 JV2899
 JV2899                          SUPERSEDED SURVEY CONTROL
 JV2899
 JV2899  NGVD 29 (11/26/84)  129.369  (m)          424.44   (f) ADJUSTED    2 0
 JV2899
 JV2899.Superseded values are not recommended for survey control.
 JV2899
 JV2899.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2899.See file dsdata.pdf to determine how the superseded data were derived.
 JV2899
 JV2899_MARKER: B = BOLT
 JV2899_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2899_SP_SET: SIGN BASE
 JV2899_STAMPING: WSSC BM 3203
 JV2899_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2899
 JV2899  HISTORY     - Date     Condition        Report By
 JV2899  HISTORY     - UNK      MONUMENTED       WSSC
 JV2899  HISTORY     - 1965     GOOD             WSSC
 JV2899
 JV2899                          STATION DESCRIPTION
 JV2899
 JV2899'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2899'0.2 MI S FROM DARNESTOWN.
 JV2899'0.2 MI. S. ALONG STATE HWY. 112 FROM ITS JUNCTION WITH STATE
 JV2899'HWY. 28 AT DARNESTOWN IN THE TOP CONCRETE BASE OF A CITGO OIL
 JV2899'STATION SIGN ON THE E. SIDE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2881 ***********************************************************************
 JV2881  DESIGNATION -  3204 WSSC
 JV2881  PID         -  JV2881
 JV2881  STATE/COUNTY-  MD/MONTGOMERY
 JV2881  COUNTRY     -  US
 JV2881  USGS QUAD   -  ROCKVILLE (2016)
 JV2881
 JV2881                         *CURRENT SURVEY CONTROL
 JV2881  ______________________________________________________________________
 JV2881* NAD 83(1986) POSITION- 39 04 54.     (N) 077 14 58.     (W)   SCALED
 JV2881* NAVD 88 ORTHO HEIGHT -   111.988 (meters)      367.41  (feet) ADJUSTED
 JV2881  ______________________________________________________________________
 JV2881  GEOID HEIGHT    -        -31.731 (meters)                     GEOID18
 JV2881  DYNAMIC HEIGHT  -        111.930 (meters)      367.22  (feet) COMP
 JV2881  MODELED GRAVITY -    980,107.0   (mgal)                       NAVD 88
 JV2881
 JV2881  VERT ORDER      -  SECOND    CLASS 0
 JV2881
 JV2881.The horizontal coordinates were scaled from a map and have
 JV2881.an estimated accuracy of +/- 6 seconds.
 JV2881
 JV2881.The orthometric height was determined by differential leveling and
 JV2881.adjusted by the NATIONAL GEODETIC SURVEY
 JV2881.in June 1991.
 JV2881
 JV2881.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2881.GEOID18 height accuracy estimate available here.
 JV2881
 JV2881.Click photographs - Photos may exist for this station.
 JV2881
 JV2881.The dynamic height is computed by dividing the NAVD 88
 JV2881.geopotential number by the normal gravity value computed on the
 JV2881.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2881.degrees latitude (g = 980.6199 gals.).
 JV2881
 JV2881.The modeled gravity was interpolated from observed gravity values.
 JV2881
 JV2881;                    North         East    Units  Estimated Accuracy
 JV2881;SPC MD       -   157,100.      378,420.      MT  (+/- 180 meters Scaled)
 JV2881
 JV2881_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ054282(NAD 83)
 JV2881
 JV2881                          SUPERSEDED SURVEY CONTROL
 JV2881
 JV2881  NGVD 29 (11/26/84)  112.207  (m)          368.13   (f) ADJUSTED    2 0
 JV2881
 JV2881.Superseded values are not recommended for survey control.
 JV2881
 JV2881.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2881.See file dsdata.pdf to determine how the superseded data were derived.
 JV2881
 JV2881_MARKER: B = BOLT
 JV2881_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2881_SP_SET: HEADWALL
 JV2881_STAMPING: WSSC BM 3204
 JV2881_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2881
 JV2881  HISTORY     - Date     Condition        Report By
 JV2881  HISTORY     - UNK      MONUMENTED       WSSC
 JV2881  HISTORY     - 1965     GOOD             WSSC
 JV2881
 JV2881                          STATION DESCRIPTION
 JV2881
 JV2881'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2881'5.1 MI E FROM DARNESTOWN.
 JV2881'2.5 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2881'HWY. 112 AT DARNESTOWN, THENCE 2.4 MI. S. ALONG QUINCE ORCHARD
 JV2881'ROAD, THENCE 0.2 MI. S. ALONG DUFIEF MILL ROAD, 200 FT. N. OF
 JV2881'THE JUNCTION OF DUFIEF MILL ROAD AND TRAVILAH ROAD IN THE TOP
 JV2881'CENTERLINE OF THE CONCRETE HEADWALL ON THE N. SIDE OF THE N.
 JV2881'DRIVE LEADING TO THE PARKING AREA OF TRAVILAH ELEMENTARY SCHOOL.
 JV2881'BENCH MARK MAY ALSO BE REACHED BY GOING 0.3 MI. N.W. ALONG STATE
 JV2881'HWY. 28 FROM ITS JUNCTION WITH STATE HWY. 112 AT DARNESTOWN,
 JV2881'THENCE 2.8 MI. S.E. ALONG TURKEY FOOT DRIVE, THENCE 0.4 MI. E.
 JV2881'ALONG TRAVILAH ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2882 ***********************************************************************
 JV2882  DESIGNATION -  3205 WSSC
 JV2882  PID         -  JV2882
 JV2882  STATE/COUNTY-  MD/MONTGOMERY
 JV2882  COUNTRY     -  US
 JV2882  USGS QUAD   -  SENECA (2016)
 JV2882
 JV2882                         *CURRENT SURVEY CONTROL
 JV2882  ______________________________________________________________________
 JV2882* NAD 83(1986) POSITION- 39 04 47.     (N) 077 15 22.     (W)   SCALED
 JV2882* NAVD 88 ORTHO HEIGHT -   110.037 (meters)      361.01  (feet) ADJUSTED
 JV2882  ______________________________________________________________________
 JV2882  GEOID HEIGHT    -        -31.737 (meters)                     GEOID18
 JV2882  DYNAMIC HEIGHT  -        109.979 (meters)      360.82  (feet) COMP
 JV2882  MODELED GRAVITY -    980,106.8   (mgal)                       NAVD 88
 JV2882
 JV2882  VERT ORDER      -  SECOND    CLASS 0
 JV2882
 JV2882.The horizontal coordinates were scaled from a map and have
 JV2882.an estimated accuracy of +/- 6 seconds.
 JV2882
 JV2882.The orthometric height was determined by differential leveling and
 JV2882.adjusted by the NATIONAL GEODETIC SURVEY
 JV2882.in June 1991.
 JV2882
 JV2882.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2882.GEOID18 height accuracy estimate available here.
 JV2882
 JV2882.Click photographs - Photos may exist for this station.
 JV2882
 JV2882.The dynamic height is computed by dividing the NAVD 88
 JV2882.geopotential number by the normal gravity value computed on the
 JV2882.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2882.degrees latitude (g = 980.6199 gals.).
 JV2882
 JV2882.The modeled gravity was interpolated from observed gravity values.
 JV2882
 JV2882;                    North         East    Units  Estimated Accuracy
 JV2882;SPC MD       -   156,890.      377,840.      MT  (+/- 180 meters Scaled)
 JV2882
 JV2882_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ048280(NAD 83)
 JV2882
 JV2882                          SUPERSEDED SURVEY CONTROL
 JV2882
 JV2882  NGVD 29 (11/26/84)  110.256  (m)          361.73   (f) ADJUSTED    2 0
 JV2882
 JV2882.Superseded values are not recommended for survey control.
 JV2882
 JV2882.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2882.See file dsdata.pdf to determine how the superseded data were derived.
 JV2882
 JV2882_MARKER: B = BOLT
 JV2882_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV2882_STAMPING: WSSC BM 3205
 JV2882_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2882
 JV2882  HISTORY     - Date     Condition        Report By
 JV2882  HISTORY     - UNK      MONUMENTED       WSSC
 JV2882  HISTORY     - 1965     GOOD             WSSC
 JV2882
 JV2882                          STATION DESCRIPTION
 JV2882
 JV2882'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2882'3.1 MI SE FROM DARNESTOWN.
 JV2882'0.3 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2882'HWY. 112 AT DARNESTOWN, THENCE 2.8 MI. S.E. ALONG TURKEY FOOT
 JV2882'ROAD.  AT THE JUNCTION WITH TRAVILAH ROAD IN THE W. CORNER OF
 JV2882'THE JUNCTION, 111.8 FT. S.E. ACROSS TURKEY FOOT ROAD FROM A
 JV2882'POLE, 59.9 FT. S. OF 20 INCH OAK TREE, 52.8 FT. N. OF A 8 INCH
 JV2882'LOCUST TREE AND 7.2 FT. N. OF POLE E-646072 IN PIPE FILLED WITH
 JV2882'CONCRETE 0.50 FT. BELOW THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2883 ***********************************************************************
 JV2883  DESIGNATION -  3206 WSSC
 JV2883  PID         -  JV2883
 JV2883  STATE/COUNTY-  MD/MONTGOMERY
 JV2883  COUNTRY     -  US
 JV2883  USGS QUAD   -  SENECA (2016)
 JV2883
 JV2883                         *CURRENT SURVEY CONTROL
 JV2883  ______________________________________________________________________
 JV2883* NAD 83(1986) POSITION- 39 04 59.     (N) 077 15 54.     (W)   SCALED
 JV2883* NAVD 88 ORTHO HEIGHT -    76.482 (meters)      250.92  (feet) ADJUSTED
 JV2883  ______________________________________________________________________
 JV2883  GEOID HEIGHT    -        -31.749 (meters)                     GEOID18
 JV2883  DYNAMIC HEIGHT  -         76.442 (meters)      250.79  (feet) COMP
 JV2883  MODELED GRAVITY -    980,105.9   (mgal)                       NAVD 88
 JV2883
 JV2883  VERT ORDER      -  SECOND    CLASS 0
 JV2883
 JV2883.The horizontal coordinates were scaled from a map and have
 JV2883.an estimated accuracy of +/- 6 seconds.
 JV2883
 JV2883.The orthometric height was determined by differential leveling and
 JV2883.adjusted by the NATIONAL GEODETIC SURVEY
 JV2883.in June 1991.
 JV2883
 JV2883.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2883.GEOID18 height accuracy estimate available here.
 JV2883
 JV2883.Click photographs - Photos may exist for this station.
 JV2883
 JV2883.The dynamic height is computed by dividing the NAVD 88
 JV2883.geopotential number by the normal gravity value computed on the
 JV2883.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2883.degrees latitude (g = 980.6199 gals.).
 JV2883
 JV2883.The modeled gravity was interpolated from observed gravity values.
 JV2883
 JV2883;                    North         East    Units  Estimated Accuracy
 JV2883;SPC MD       -   157,260.      377,070.      MT  (+/- 180 meters Scaled)
 JV2883
 JV2883_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ040284(NAD 83)
 JV2883
 JV2883                          SUPERSEDED SURVEY CONTROL
 JV2883
 JV2883  NGVD 29 (11/26/84)   76.700  (m)          251.64   (f) ADJUSTED    2 0
 JV2883
 JV2883.Superseded values are not recommended for survey control.
 JV2883
 JV2883.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2883.See file dsdata.pdf to determine how the superseded data were derived.
 JV2883
 JV2883_MARKER: B = BOLT
 JV2883_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2883_SP_SET: BRIDGE
 JV2883_STAMPING: WSSC BM 3206
 JV2883_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2883
 JV2883  HISTORY     - Date     Condition        Report By
 JV2883  HISTORY     - UNK      MONUMENTED       WSSC
 JV2883  HISTORY     - 1965     GOOD             WSSC
 JV2883
 JV2883                          STATION DESCRIPTION
 JV2883
 JV2883'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2883'2.5 MI SE FROM DARNESTOWN.
 JV2883'0.3 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2883'HWY. 112 AT DARNESTOWN, THENCE 2.2 MI. S.E. ALONG TURKEY FOOT
 JV2883'ROAD.  75 FT. N.W. OF THE JUNCTION WITH ORERY MILL ROAD IN THE
 JV2883'TOP CENTERLINE OF THE N.W. CONCRETE HEADWALL OF THE BRIDGE OVER
 JV2883'MUDDY BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2884 ***********************************************************************
 JV2884  DESIGNATION -  3207 WSSC
 JV2884  PID         -  JV2884
 JV2884  STATE/COUNTY-  MD/MONTGOMERY
 JV2884  COUNTRY     -  US
 JV2884  USGS QUAD   -  SENECA (2016)
 JV2884
 JV2884                         *CURRENT SURVEY CONTROL
 JV2884  ______________________________________________________________________
 JV2884* NAD 83(1986) POSITION- 39 05 25.     (N) 077 16 04.     (W)   SCALED
 JV2884* NAVD 88 ORTHO HEIGHT -   110.076 (meters)      361.14  (feet) ADJUSTED
 JV2884  ______________________________________________________________________
 JV2884  GEOID HEIGHT    -        -31.756 (meters)                     GEOID18
 JV2884  DYNAMIC HEIGHT  -        110.019 (meters)      360.95  (feet) COMP
 JV2884  MODELED GRAVITY -    980,105.2   (mgal)                       NAVD 88
 JV2884
 JV2884  VERT ORDER      -  SECOND    CLASS 0
 JV2884
 JV2884.The horizontal coordinates were scaled from a map and have
 JV2884.an estimated accuracy of +/- 6 seconds.
 JV2884
 JV2884.The orthometric height was determined by differential leveling and
 JV2884.adjusted by the NATIONAL GEODETIC SURVEY
 JV2884.in June 1991.
 JV2884
 JV2884.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2884.GEOID18 height accuracy estimate available here.
 JV2884
 JV2884.Click photographs - Photos may exist for this station.
 JV2884
 JV2884.The dynamic height is computed by dividing the NAVD 88
 JV2884.geopotential number by the normal gravity value computed on the
 JV2884.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2884.degrees latitude (g = 980.6199 gals.).
 JV2884
 JV2884.The modeled gravity was interpolated from observed gravity values.
 JV2884
 JV2884;                    North         East    Units  Estimated Accuracy
 JV2884;SPC MD       -   158,060.      376,830.      MT  (+/- 180 meters Scaled)
 JV2884
 JV2884_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ038292(NAD 83)
 JV2884
 JV2884                          SUPERSEDED SURVEY CONTROL
 JV2884
 JV2884  NGVD 29 (11/26/84)  110.293  (m)          361.85   (f) ADJUSTED    2 0
 JV2884
 JV2884.Superseded values are not recommended for survey control.
 JV2884
 JV2884.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2884.See file dsdata.pdf to determine how the superseded data were derived.
 JV2884
 JV2884_MARKER: B = BOLT
 JV2884_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV2884_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2884
 JV2884  HISTORY     - Date     Condition        Report By
 JV2884  HISTORY     - UNK      MONUMENTED       WSSC
 JV2884  HISTORY     - 1965     GOOD             WSSC
 JV2884
 JV2884                          STATION DESCRIPTION
 JV2884
 JV2884'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2884'1.9 MI SE FROM DARNESTOWN.
 JV2884'0.3 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2884'HWY. 112 AT DARNESTOWN, THENCE 1.6 MI. S.E. ALONG TURKEY FOOT
 JV2884'ROAD AT THE W. CORNER OF THE JUNCTION WITH JONES LANE.  75.8 FT.
 JV2884'W. AND ACROSS TURKEY FOOT ROAD FROM THE N. CORNER OF A RED BARN,
 JV2884'62.1 FT. W. OF THE S. CORNER OF THE BARN, 55.3 FT. S.E. OF C AND
 JV2884'P POLE M-2546, AND 39.0 FT. N. OF C AND P POLE M-4P IN A CONE
 JV2884'FILLED PIPE AND LEVEL WITH THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2885 ***********************************************************************
 JV2885  DESIGNATION -  3210 WSSC
 JV2885  PID         -  JV2885
 JV2885  STATE/COUNTY-  MD/MONTGOMERY
 JV2885  COUNTRY     -  US
 JV2885  USGS QUAD   -  SENECA (2016)
 JV2885
 JV2885                         *CURRENT SURVEY CONTROL
 JV2885  ______________________________________________________________________
 JV2885* NAD 83(1986) POSITION- 39 05 33.     (N) 077 16 25.     (W)   SCALED
 JV2885* NAVD 88 ORTHO HEIGHT -    80.507 (meters)      264.13  (feet) ADJUSTED
 JV2885  ______________________________________________________________________
 JV2885  GEOID HEIGHT    -        -31.765 (meters)                     GEOID18
 JV2885  DYNAMIC HEIGHT  -         80.465 (meters)      263.99  (feet) COMP
 JV2885  MODELED GRAVITY -    980,104.6   (mgal)                       NAVD 88
 JV2885
 JV2885  VERT ORDER      -  SECOND    CLASS 0
 JV2885
 JV2885.The horizontal coordinates were scaled from a map and have
 JV2885.an estimated accuracy of +/- 6 seconds.
 JV2885
 JV2885.The orthometric height was determined by differential leveling and
 JV2885.adjusted by the NATIONAL GEODETIC SURVEY
 JV2885.in June 1991.
 JV2885
 JV2885.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2885.GEOID18 height accuracy estimate available here.
 JV2885
 JV2885.Click photographs - Photos may exist for this station.
 JV2885
 JV2885.The dynamic height is computed by dividing the NAVD 88
 JV2885.geopotential number by the normal gravity value computed on the
 JV2885.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2885.degrees latitude (g = 980.6199 gals.).
 JV2885
 JV2885.The modeled gravity was interpolated from observed gravity values.
 JV2885
 JV2885;                    North         East    Units  Estimated Accuracy
 JV2885;SPC MD       -   158,310.      376,330.      MT  (+/- 180 meters Scaled)
 JV2885
 JV2885_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ033295(NAD 83)
 JV2885
 JV2885                          SUPERSEDED SURVEY CONTROL
 JV2885
 JV2885  NGVD 29 (11/26/84)   80.722  (m)          264.84   (f) ADJUSTED    2 0
 JV2885
 JV2885.Superseded values are not recommended for survey control.
 JV2885
 JV2885.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2885.See file dsdata.pdf to determine how the superseded data were derived.
 JV2885
 JV2885_MARKER: B = BOLT
 JV2885_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2885_SP_SET: BRIDGE
 JV2885_STAMPING: WSSC BM 3210
 JV2885_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2885
 JV2885  HISTORY     - Date     Condition        Report By
 JV2885  HISTORY     - UNK      MONUMENTED       WSSC
 JV2885  HISTORY     - 1965     GOOD             WSSC
 JV2885
 JV2885                          STATION DESCRIPTION
 JV2885
 JV2885'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2885'1.5 MI SE FROM DARNESTOWN.
 JV2885'0.3 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2885'HWY. 112 AT DARNESTOWN, THENCE 1.2 MI. S.E. ALONG TURKEY FOOT
 JV2885'ROAD IN THE TOP AND CENTERLINE OF THE S. CONCRETE HEADWALL OF
 JV2885'A BRIDGE OVER A STREAM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2886 ***********************************************************************
 JV2886  DESIGNATION -  3211 WSSC
 JV2886  PID         -  JV2886
 JV2886  STATE/COUNTY-  MD/MONTGOMERY
 JV2886  COUNTRY     -  US
 JV2886  USGS QUAD   -  SENECA (2016)
 JV2886
 JV2886                         *CURRENT SURVEY CONTROL
 JV2886  ______________________________________________________________________
 JV2886* NAD 83(1986) POSITION- 39 05 44.     (N) 077 16 46.     (W)   SCALED
 JV2886* NAVD 88 ORTHO HEIGHT -   109.363 (meters)      358.80  (feet) ADJUSTED
 JV2886  ______________________________________________________________________
 JV2886  GEOID HEIGHT    -        -31.774 (meters)                     GEOID18
 JV2886  DYNAMIC HEIGHT  -        109.306 (meters)      358.61  (feet) COMP
 JV2886  MODELED GRAVITY -    980,103.9   (mgal)                       NAVD 88
 JV2886
 JV2886  VERT ORDER      -  SECOND    CLASS 0
 JV2886
 JV2886.The horizontal coordinates were scaled from a map and have
 JV2886.an estimated accuracy of +/- 6 seconds.
 JV2886
 JV2886.The orthometric height was determined by differential leveling and
 JV2886.adjusted by the NATIONAL GEODETIC SURVEY
 JV2886.in June 1991.
 JV2886
 JV2886.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2886.GEOID18 height accuracy estimate available here.
 JV2886
 JV2886.Click photographs - Photos may exist for this station.
 JV2886
 JV2886.The dynamic height is computed by dividing the NAVD 88
 JV2886.geopotential number by the normal gravity value computed on the
 JV2886.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2886.degrees latitude (g = 980.6199 gals.).
 JV2886
 JV2886.The modeled gravity was interpolated from observed gravity values.
 JV2886
 JV2886;                    North         East    Units  Estimated Accuracy
 JV2886;SPC MD       -   158,650.      375,830.      MT  (+/- 180 meters Scaled)
 JV2886
 JV2886_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ028298(NAD 83)
 JV2886
 JV2886                          SUPERSEDED SURVEY CONTROL
 JV2886
 JV2886  NGVD 29 (11/26/84)  109.577  (m)          359.50   (f) ADJUSTED    2 0
 JV2886
 JV2886.Superseded values are not recommended for survey control.
 JV2886
 JV2886.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2886.See file dsdata.pdf to determine how the superseded data were derived.
 JV2886
 JV2886_MARKER: B = BOLT
 JV2886_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV2886_STAMPING: WSSC BM 3211
 JV2886_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2886
 JV2886  HISTORY     - Date     Condition        Report By
 JV2886  HISTORY     - UNK      MONUMENTED       WSSC
 JV2886  HISTORY     - 1965     GOOD             WSSC
 JV2886
 JV2886                          STATION DESCRIPTION
 JV2886
 JV2886'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2886'1.1 MI SE FROM DARNESTOWN.
 JV2886'0.3 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2886'HWY. 112 AT DARNESTOWN, THENCE 0.8 MI. S.E. ALONG TURKEY FOOT
 JV2886'ROAD.  62.4 FT. S.W. OF PEPCO POLE 639867, 28.4 FT. S.E. OF A
 JV2886'6 INCH OAK TREE AND 18.5 FT. S.W. OF PEPCO POLE 630868 IN A
 JV2886'CONCRETE FILLED PIPE 0.3 FT. BELOW THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2887 ***********************************************************************
 JV2887  DESIGNATION -  3212 WSSC
 JV2887  PID         -  JV2887
 JV2887  STATE/COUNTY-  MD/MONTGOMERY
 JV2887  COUNTRY     -  US
 JV2887  USGS QUAD   -  SENECA (2016)
 JV2887
 JV2887                         *CURRENT SURVEY CONTROL
 JV2887  ______________________________________________________________________
 JV2887* NAD 83(1986) POSITION- 39 06 08.     (N) 077 17 05.     (W)   SCALED
 JV2887* NAVD 88 ORTHO HEIGHT -   131.712 (meters)      432.13  (feet) ADJUSTED
 JV2887  ______________________________________________________________________
 JV2887  GEOID HEIGHT    -        -31.787 (meters)                     GEOID18
 JV2887  DYNAMIC HEIGHT  -        131.643 (meters)      431.90  (feet) COMP
 JV2887  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV2887
 JV2887  VERT ORDER      -  SECOND    CLASS 0
 JV2887
 JV2887.The horizontal coordinates were scaled from a map and have
 JV2887.an estimated accuracy of +/- 6 seconds.
 JV2887
 JV2887.The orthometric height was determined by differential leveling and
 JV2887.adjusted by the NATIONAL GEODETIC SURVEY
 JV2887.in June 1991.
 JV2887
 JV2887.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2887.GEOID18 height accuracy estimate available here.
 JV2887
 JV2887.Click photographs - Photos may exist for this station.
 JV2887
 JV2887.The dynamic height is computed by dividing the NAVD 88
 JV2887.geopotential number by the normal gravity value computed on the
 JV2887.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2887.degrees latitude (g = 980.6199 gals.).
 JV2887
 JV2887.The modeled gravity was interpolated from observed gravity values.
 JV2887
 JV2887;                    North         East    Units  Estimated Accuracy
 JV2887;SPC MD       -   159,390.      375,370.      MT  (+/- 180 meters Scaled)
 JV2887
 JV2887_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ024306(NAD 83)
 JV2887
 JV2887                          SUPERSEDED SURVEY CONTROL
 JV2887
 JV2887  NGVD 29 (11/26/84)  131.924  (m)          432.82   (f) ADJUSTED    2 0
 JV2887
 JV2887.Superseded values are not recommended for survey control.
 JV2887
 JV2887.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2887.See file dsdata.pdf to determine how the superseded data were derived.
 JV2887
 JV2887_MARKER: B = BOLT
 JV2887_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV2887_SP_SET: STEP
 JV2887_STAMPING: WSSC BM 3212
 JV2887_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV2887_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2887_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2887+SATELLITE: SATELLITE OBSERVATIONS - November 07, 2022
 JV2887
 JV2887  HISTORY     - Date     Condition        Report By
 JV2887  HISTORY     - UNK      MONUMENTED       WSSC
 JV2887  HISTORY     - 1965     GOOD             WSSC
 JV2887  HISTORY     - 20221107 GOOD             NGS
 JV2887
 JV2887                          STATION DESCRIPTION
 JV2887
 JV2887'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2887'0.6 MI SE FROM DARNESTOWN.
 JV2887'0.3 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2887'HWY. 112 AT DARNESTOWN, THENCE 0.3 MI. S.E. ALONG TURKEY FOOT
 JV2887'ROAD IN THE S. CONCRETE STEPS PLATFORM LEADING TO THE ENTRANCE
 JV2887'TO DARNESTOWN ELEMENTARY SCHOOL.
 JV2887
 JV2887                          STATION RECOVERY (2022)
 JV2887
 JV2887'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (KA)
 JV2887'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2879 ***********************************************************************
 JV2879  DESIGNATION -  3213 WSSC
 JV2879  PID         -  JV2879
 JV2879  STATE/COUNTY-  MD/MONTGOMERY
 JV2879  COUNTRY     -  US
 JV2879  USGS QUAD   -  ROCKVILLE (2016)
 JV2879
 JV2879                         *CURRENT SURVEY CONTROL
 JV2879  ______________________________________________________________________
 JV2879* NAD 83(1986) POSITION- 39 05 36.     (N) 077 14 58.     (W)   SCALED
 JV2879* NAVD 88 ORTHO HEIGHT -    82.654 (meters)      271.17  (feet) ADJUSTED
 JV2879  ______________________________________________________________________
 JV2879  GEOID HEIGHT    -        -31.739 (meters)                     GEOID18
 JV2879  DYNAMIC HEIGHT  -         82.611 (meters)      271.03  (feet) COMP
 JV2879  MODELED GRAVITY -    980,105.9   (mgal)                       NAVD 88
 JV2879
 JV2879  VERT ORDER      -  SECOND    CLASS 0
 JV2879
 JV2879.The horizontal coordinates were scaled from a map and have
 JV2879.an estimated accuracy of +/- 6 seconds.
 JV2879
 JV2879.The orthometric height was determined by differential leveling and
 JV2879.adjusted by the NATIONAL GEODETIC SURVEY
 JV2879.in June 1991.
 JV2879
 JV2879.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2879.GEOID18 height accuracy estimate available here.
 JV2879
 JV2879.Click photographs - Photos may exist for this station.
 JV2879
 JV2879.The dynamic height is computed by dividing the NAVD 88
 JV2879.geopotential number by the normal gravity value computed on the
 JV2879.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2879.degrees latitude (g = 980.6199 gals.).
 JV2879
 JV2879.The modeled gravity was interpolated from observed gravity values.
 JV2879
 JV2879;                    North         East    Units  Estimated Accuracy
 JV2879;SPC MD       -   158,400.      378,420.      MT  (+/- 180 meters Scaled)
 JV2879
 JV2879_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ054295(NAD 83)
 JV2879
 JV2879                          SUPERSEDED SURVEY CONTROL
 JV2879
 JV2879  NGVD 29 (11/26/84)   82.872  (m)          271.89   (f) ADJUSTED    2 0
 JV2879
 JV2879.Superseded values are not recommended for survey control.
 JV2879
 JV2879.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2879.See file dsdata.pdf to determine how the superseded data were derived.
 JV2879
 JV2879_MARKER: B = BOLT
 JV2879_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2879_SP_SET: BRIDGE
 JV2879_STAMPING: WSSC BM 3213
 JV2879_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2879
 JV2879  HISTORY     - Date     Condition        Report By
 JV2879  HISTORY     - UNK      MONUMENTED       WSSC
 JV2879  HISTORY     - 1965     GOOD             WSSC
 JV2879
 JV2879                          STATION DESCRIPTION
 JV2879
 JV2879'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2879'4.3 MI E FROM DARNESTOWN.
 JV2879'2.5 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2879'HWY. 112 AT DARNESTOWN, THENCE 1.8 MI. S. ALONG QUINCE ORCHARD ROAD,
 JV2879'1.0 MI. N. OF THE JUNCTION WITH TRAVILAH RD IN THE TOP
 JV2879'CENTERLINE OF THE E. CONCRETE WINGWALL OF THE BRIDGE OVER
 JV2879'MUDDY BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2873 ***********************************************************************
 JV2873  DESIGNATION -  3214 WSSC
 JV2873  PID         -  JV2873
 JV2873  STATE/COUNTY-  MD/MONTGOMERY
 JV2873  COUNTRY     -  US
 JV2873  USGS QUAD   -  SENECA (2016)
 JV2873
 JV2873                         *CURRENT SURVEY CONTROL
 JV2873  ______________________________________________________________________
 JV2873* NAD 83(1986) POSITION- 39 06 29.     (N) 077 16 54.     (W)   SCALED
 JV2873* NAVD 88 ORTHO HEIGHT -   131.658 (meters)      431.95  (feet) ADJUSTED
 JV2873  ______________________________________________________________________
 JV2873  GEOID HEIGHT    -        -31.788 (meters)                     GEOID18
 JV2873  DYNAMIC HEIGHT  -        131.589 (meters)      431.72  (feet) COMP
 JV2873  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV2873
 JV2873  VERT ORDER      -  SECOND    CLASS 0
 JV2873
 JV2873.The horizontal coordinates were scaled from a map and have
 JV2873.an estimated accuracy of +/- 6 seconds.
 JV2873
 JV2873.The orthometric height was determined by differential leveling and
 JV2873.adjusted by the NATIONAL GEODETIC SURVEY
 JV2873.in June 1991.
 JV2873
 JV2873.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2873.GEOID18 height accuracy estimate available here.
 JV2873
 JV2873.Click photographs - Photos may exist for this station.
 JV2873
 JV2873.The dynamic height is computed by dividing the NAVD 88
 JV2873.geopotential number by the normal gravity value computed on the
 JV2873.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2873.degrees latitude (g = 980.6199 gals.).
 JV2873
 JV2873.The modeled gravity was interpolated from observed gravity values.
 JV2873
 JV2873;                    North         East    Units  Estimated Accuracy
 JV2873;SPC MD       -   160,040.      375,640.      MT  (+/- 180 meters Scaled)
 JV2873
 JV2873_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ027312(NAD 83)
 JV2873
 JV2873                          SUPERSEDED SURVEY CONTROL
 JV2873
 JV2873  NGVD 29 (11/26/84)  131.878  (m)          432.67   (f) ADJUSTED    2 0
 JV2873
 JV2873.Superseded values are not recommended for survey control.
 JV2873
 JV2873.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2873.See file dsdata.pdf to determine how the superseded data were derived.
 JV2873
 JV2873_MARKER: B = BOLT
 JV2873_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2873_SP_SET: CATCH BASIN
 JV2873_STAMPING: WSSC BM 3214
 JV2873_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2873
 JV2873  HISTORY     - Date     Condition        Report By
 JV2873  HISTORY     - UNK      MONUMENTED       WSSC
 JV2873  HISTORY     - 1965     GOOD             WSSC
 JV2873
 JV2873                          STATION DESCRIPTION
 JV2873
 JV2873'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2873'0.5 MI NE FROM DARNESTOWN.
 JV2873'0.5 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2873'HWY. 112 AT DARNESTOWN.  IN THE S. CORNER OF THE JUNCTION WITH
 JV2873'CHESTNUT OAK DRIVE IN THE TOP CONCRETE HEADWALL OF A CATCH
 JV2873'BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2874 ***********************************************************************
 JV2874  DESIGNATION -  3215 WSSC
 JV2874  PID         -  JV2874
 JV2874  STATE/COUNTY-  MD/MONTGOMERY
 JV2874  COUNTRY     -  US
 JV2874  USGS QUAD   -  SENECA (2016)
 JV2874
 JV2874                         *CURRENT SURVEY CONTROL
 JV2874  ______________________________________________________________________
 JV2874* NAD 83(1986) POSITION- 39 06 45.     (N) 077 16 23.     (W)   SCALED
 JV2874* NAVD 88 ORTHO HEIGHT -   124.181 (meters)      407.42  (feet) ADJUSTED
 JV2874  ______________________________________________________________________
 JV2874  GEOID HEIGHT    -        -31.780 (meters)                     GEOID18
 JV2874  DYNAMIC HEIGHT  -        124.116 (meters)      407.20  (feet) COMP
 JV2874  MODELED GRAVITY -    980,103.5   (mgal)                       NAVD 88
 JV2874
 JV2874  VERT ORDER      -  SECOND    CLASS 0
 JV2874
 JV2874.The horizontal coordinates were scaled from a map and have
 JV2874.an estimated accuracy of +/- 6 seconds.
 JV2874
 JV2874.The orthometric height was determined by differential leveling and
 JV2874.adjusted by the NATIONAL GEODETIC SURVEY
 JV2874.in June 1991.
 JV2874
 JV2874.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2874.GEOID18 height accuracy estimate available here.
 JV2874
 JV2874.Click photographs - Photos may exist for this station.
 JV2874
 JV2874.The dynamic height is computed by dividing the NAVD 88
 JV2874.geopotential number by the normal gravity value computed on the
 JV2874.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2874.degrees latitude (g = 980.6199 gals.).
 JV2874
 JV2874.The modeled gravity was interpolated from observed gravity values.
 JV2874
 JV2874;                    North         East    Units  Estimated Accuracy
 JV2874;SPC MD       -   160,530.      376,390.      MT  (+/- 180 meters Scaled)
 JV2874
 JV2874_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ034317(NAD 83)
 JV2874
 JV2874                          SUPERSEDED SURVEY CONTROL
 JV2874
 JV2874  NGVD 29 (11/26/84)  124.400  (m)          408.14   (f) ADJUSTED    2 0
 JV2874
 JV2874.Superseded values are not recommended for survey control.
 JV2874
 JV2874.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2874.See file dsdata.pdf to determine how the superseded data were derived.
 JV2874
 JV2874_MARKER: B = BOLT
 JV2874_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2874_SP_SET: HEADWALL
 JV2874_STAMPING: WSSC BM 3215
 JV2874_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2874
 JV2874  HISTORY     - Date     Condition        Report By
 JV2874  HISTORY     - UNK      MONUMENTED       WSSC
 JV2874  HISTORY     - 1965     GOOD             WSSC
 JV2874
 JV2874                          STATION DESCRIPTION
 JV2874
 JV2874'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2874'1.2 MI NE FROM DARNESTOWN.
 JV2874'1.2 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2874'HWY. 112 AT DARNESTOWN.  0.2 MI. W. FROM THE JUNCTION OF
 JV2874'ANCIENT OAK DRIVE IN THE TOP CENTERLINE OF THE S. CONCRETE
 JV2874'HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2875 ***********************************************************************
 JV2875  DESIGNATION -  3216 WSSC
 JV2875  PID         -  JV2875
 JV2875  STATE/COUNTY-  MD/MONTGOMERY
 JV2875  COUNTRY     -  US
 JV2875  USGS QUAD   -  SENECA (2016)
 JV2875
 JV2875                         *CURRENT SURVEY CONTROL
 JV2875  ______________________________________________________________________
 JV2875* NAD 83(1986) POSITION- 39 06 57.     (N) 077 15 53.     (W)   SCALED
 JV2875* NAVD 88 ORTHO HEIGHT -   129.048 (meters)      423.39  (feet) ADJUSTED
 JV2875  ______________________________________________________________________
 JV2875  GEOID HEIGHT    -        -31.772 (meters)                     GEOID18
 JV2875  DYNAMIC HEIGHT  -        128.981 (meters)      423.17  (feet) COMP
 JV2875  MODELED GRAVITY -    980,103.6   (mgal)                       NAVD 88
 JV2875
 JV2875  VERT ORDER      -  SECOND    CLASS 0
 JV2875
 JV2875.The horizontal coordinates were scaled from a map and have
 JV2875.an estimated accuracy of +/- 6 seconds.
 JV2875
 JV2875.The orthometric height was determined by differential leveling and
 JV2875.adjusted by the NATIONAL GEODETIC SURVEY
 JV2875.in June 1991.
 JV2875
 JV2875.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2875.GEOID18 height accuracy estimate available here.
 JV2875
 JV2875.Click photographs - Photos may exist for this station.
 JV2875
 JV2875.The dynamic height is computed by dividing the NAVD 88
 JV2875.geopotential number by the normal gravity value computed on the
 JV2875.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2875.degrees latitude (g = 980.6199 gals.).
 JV2875
 JV2875.The modeled gravity was interpolated from observed gravity values.
 JV2875
 JV2875;                    North         East    Units  Estimated Accuracy
 JV2875;SPC MD       -   160,900.      377,110.      MT  (+/- 180 meters Scaled)
 JV2875
 JV2875_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ042320(NAD 83)
 JV2875
 JV2875                          SUPERSEDED SURVEY CONTROL
 JV2875
 JV2875  NGVD 29 (11/26/84)  129.266  (m)          424.10   (f) ADJUSTED    2 0
 JV2875
 JV2875.Superseded values are not recommended for survey control.
 JV2875
 JV2875.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2875.See file dsdata.pdf to determine how the superseded data were derived.
 JV2875
 JV2875_MARKER: B = BOLT
 JV2875_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2875_SP_SET: HEADWALL
 JV2875_STAMPING: WSSC BM 3216
 JV2875_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2875
 JV2875  HISTORY     - Date     Condition        Report By
 JV2875  HISTORY     - UNK      MONUMENTED       WSSC
 JV2875  HISTORY     - 1965     GOOD             WSSC
 JV2875
 JV2875                          STATION DESCRIPTION
 JV2875
 JV2875'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2875'1.7 MI NE FROM DARNESTOWN.
 JV2875'1.7 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2875'HWY. 112 AT DARNESTOWN IN THE TOP CENTERLINE OF THE CONCRETE
 JV2875'HEADWALL IN THE S.W. CORNER OF THE JUNCTION WITH NORMAN DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2877 ***********************************************************************
 JV2877  DESIGNATION -  3217 WSSC
 JV2877  PID         -  JV2877
 JV2877  STATE/COUNTY-  MD/MONTGOMERY
 JV2877  COUNTRY     -  US
 JV2877  USGS QUAD   -  SENECA (2016)
 JV2877
 JV2877                         *CURRENT SURVEY CONTROL
 JV2877  ______________________________________________________________________
 JV2877* NAD 83(1986) POSITION- 39 06 38.     (N) 077 15 09.     (W)   SCALED
 JV2877* NAVD 88 ORTHO HEIGHT -   126.769 (meters)      415.91  (feet) ADJUSTED
 JV2877  ______________________________________________________________________
 JV2877  GEOID HEIGHT    -        -31.754 (meters)                     GEOID18
 JV2877  DYNAMIC HEIGHT  -        126.703 (meters)      415.69  (feet) COMP
 JV2877  MODELED GRAVITY -    980,104.3   (mgal)                       NAVD 88
 JV2877
 JV2877  VERT ORDER      -  SECOND    CLASS 0
 JV2877
 JV2877.The horizontal coordinates were scaled from a map and have
 JV2877.an estimated accuracy of +/- 6 seconds.
 JV2877
 JV2877.The orthometric height was determined by differential leveling and
 JV2877.adjusted by the NATIONAL GEODETIC SURVEY
 JV2877.in June 1991.
 JV2877
 JV2877.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2877.GEOID18 height accuracy estimate available here.
 JV2877
 JV2877.Click photographs - Photos may exist for this station.
 JV2877
 JV2877.The dynamic height is computed by dividing the NAVD 88
 JV2877.geopotential number by the normal gravity value computed on the
 JV2877.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2877.degrees latitude (g = 980.6199 gals.).
 JV2877
 JV2877.The modeled gravity was interpolated from observed gravity values.
 JV2877
 JV2877;                    North         East    Units  Estimated Accuracy
 JV2877;SPC MD       -   160,310.      378,160.      MT  (+/- 180 meters Scaled)
 JV2877
 JV2877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ052314(NAD 83)
 JV2877
 JV2877                          SUPERSEDED SURVEY CONTROL
 JV2877
 JV2877  NGVD 29 (11/26/84)  126.985  (m)          416.62   (f) ADJUSTED    2 0
 JV2877
 JV2877.Superseded values are not recommended for survey control.
 JV2877
 JV2877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2877.See file dsdata.pdf to determine how the superseded data were derived.
 JV2877
 JV2877_MARKER: B = BOLT
 JV2877_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2877_SP_SET: STEP
 JV2877_STAMPING: WSSC BM 3217
 JV2877_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2877
 JV2877  HISTORY     - Date     Condition        Report By
 JV2877  HISTORY     - UNK      MONUMENTED       WSSC
 JV2877  HISTORY     - 1965     GOOD             WSSC
 JV2877
 JV2877                          STATION DESCRIPTION
 JV2877
 JV2877'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2877'3 MI NE FROM DARNESTOWN.
 JV2877'2.5 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2877'HWY. 112 AT DARNESTOWN, THEN 0.5 MI. S. ALONG QUINCE ORCHARD
 JV2877'ROAD IN THE TOP OF THE BOTTOM CONCRETE STEP LEADING TO THE HOME
 JV2877'OF ELLIS L. SHEETS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2824 ***********************************************************************
 JV2824  DESIGNATION -  3218 WSSC
 JV2824  PID         -  JV2824
 JV2824  STATE/COUNTY-  MD/MONTGOMERY
 JV2824  COUNTRY     -  US
 JV2824  USGS QUAD   -  ROCKVILLE (2016)
 JV2824
 JV2824                         *CURRENT SURVEY CONTROL
 JV2824  ______________________________________________________________________
 JV2824* NAD 83(1986) POSITION- 39 02 46.     (N) 077 13 04.     (W)   SCALED
 JV2824* NAVD 88 ORTHO HEIGHT -    76.955 (meters)      252.48  (feet) ADJUSTED
 JV2824  ______________________________________________________________________
 JV2824  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV2824  DYNAMIC HEIGHT  -         76.916 (meters)      252.35  (feet) COMP
 JV2824  MODELED GRAVITY -    980,110.5   (mgal)                       NAVD 88
 JV2824
 JV2824  VERT ORDER      -  SECOND    CLASS 0
 JV2824
 JV2824.The horizontal coordinates were scaled from a map and have
 JV2824.an estimated accuracy of +/- 6 seconds.
 JV2824
 JV2824.The orthometric height was determined by differential leveling and
 JV2824.adjusted by the NATIONAL GEODETIC SURVEY
 JV2824.in June 1991.
 JV2824
 JV2824.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2824.GEOID18 height accuracy estimate available here.
 JV2824
 JV2824.Click photographs - Photos may exist for this station.
 JV2824
 JV2824.The dynamic height is computed by dividing the NAVD 88
 JV2824.geopotential number by the normal gravity value computed on the
 JV2824.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2824.degrees latitude (g = 980.6199 gals.).
 JV2824
 JV2824.The modeled gravity was interpolated from observed gravity values.
 JV2824
 JV2824;                    North         East    Units  Estimated Accuracy
 JV2824;SPC MD       -   153,150.      381,150.      MT  (+/- 180 meters Scaled)
 JV2824
 JV2824_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ080242(NAD 83)
 JV2824
 JV2824                          SUPERSEDED SURVEY CONTROL
 JV2824
 JV2824  NGVD 29 (11/26/84)   77.183  (m)          253.22   (f) ADJUSTED    2 0
 JV2824
 JV2824.Superseded values are not recommended for survey control.
 JV2824
 JV2824.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2824.See file dsdata.pdf to determine how the superseded data were derived.
 JV2824
 JV2824_MARKER: B = BOLT
 JV2824_SETTING: 0 = UNSPECIFIED SETTING
 JV2824_SP_SET: IRON PIPE
 JV2824_STAMPING: WSSC BM 3218
 JV2824_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2824
 JV2824  HISTORY     - Date     Condition        Report By
 JV2824  HISTORY     - UNK      MONUMENTED       WSSC
 JV2824  HISTORY     - 1965     GOOD             WSSC
 JV2824
 JV2824                          STATION DESCRIPTION
 JV2824
 JV2824'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2824'2.4 MI NW FROM POTOMAC.
 JV2824'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2824'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 1.7 MI. N.W.
 JV2824'ALONG SOUTH GLEN ROAD, AT THE JUNCTION OF GLEN ROAD, 23.1 FT.
 JV2824'S.E. OF A 36 INCH SYCAMORE TREE, 27.0 FT. N.E. OF A 12 INCH GUM
 JV2824'TREE, 20.7 FT. S.W. OF A FENCE CORNER AND 18.3 FT. W. OF A POLE,
 JV2824'IN IRON PIPE 0.2 FT. BELOW THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2868 ***********************************************************************
 JV2868  DESIGNATION -  3219 WSSC
 JV2868  PID         -  JV2868
 JV2868  STATE/COUNTY-  MD/MONTGOMERY
 JV2868  COUNTRY     -  US
 JV2868  USGS QUAD   -  ROCKVILLE (2016)
 JV2868
 JV2868                         *CURRENT SURVEY CONTROL
 JV2868  ______________________________________________________________________
 JV2868* NAD 83(1986) POSITION- 39 03 07.     (N) 077 14 20.     (W)   SCALED
 JV2868* NAVD 88 ORTHO HEIGHT -   105.190 (meters)      345.11  (feet) ADJUSTED
 JV2868  ______________________________________________________________________
 JV2868  GEOID HEIGHT    -        -31.710 (meters)                     GEOID18
 JV2868  DYNAMIC HEIGHT  -        105.136 (meters)      344.93  (feet) COMP
 JV2868  MODELED GRAVITY -    980,110.0   (mgal)                       NAVD 88
 JV2868
 JV2868  VERT ORDER      -  SECOND    CLASS 0
 JV2868
 JV2868.The horizontal coordinates were scaled from a map and have
 JV2868.an estimated accuracy of +/- 6 seconds.
 JV2868
 JV2868.The orthometric height was determined by differential leveling and
 JV2868.adjusted by the NATIONAL GEODETIC SURVEY
 JV2868.in June 1991.
 JV2868
 JV2868.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2868.GEOID18 height accuracy estimate available here.
 JV2868
 JV2868.Click photographs - Photos may exist for this station.
 JV2868
 JV2868.The dynamic height is computed by dividing the NAVD 88
 JV2868.geopotential number by the normal gravity value computed on the
 JV2868.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2868.degrees latitude (g = 980.6199 gals.).
 JV2868
 JV2868.The modeled gravity was interpolated from observed gravity values.
 JV2868
 JV2868;                    North         East    Units  Estimated Accuracy
 JV2868;SPC MD       -   153,800.      379,320.      MT  (+/- 180 meters Scaled)
 JV2868
 JV2868_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ062249(NAD 83)
 JV2868
 JV2868                          SUPERSEDED SURVEY CONTROL
 JV2868
 JV2868  NGVD 29 (11/26/84)  105.416  (m)          345.85   (f) ADJUSTED    2 0
 JV2868
 JV2868.Superseded values are not recommended for survey control.
 JV2868
 JV2868.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2868.See file dsdata.pdf to determine how the superseded data were derived.
 JV2868
 JV2868_MARKER: B = BOLT
 JV2868_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2868_SP_SET: PLATFORM
 JV2868_STAMPING: WSSC BM 3219
 JV2868_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2868
 JV2868  HISTORY     - Date     Condition        Report By
 JV2868  HISTORY     - UNK      MONUMENTED       WSSC
 JV2868  HISTORY     - 1965     GOOD             WSSC
 JV2868
 JV2868                          STATION DESCRIPTION
 JV2868
 JV2868'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2868'3.8 MI NW FROM POTOMAC.
 JV2868'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 JV2868'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC,
 JV2868'THENCE 1.7 MI. N.W. ALONG SOUTH GLEN ROAD, THENCE 1.3 MI. W.
 JV2868'ALONG GLEN ROAD IN A CONCRETE PLATFORM OF STEPS LEADING TO
 JV2868'HOUSE 11611 ON N.E. SIDE OF ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2869 ***********************************************************************
 JV2869  DESIGNATION -  3220 WSSC
 JV2869  PID         -  JV2869
 JV2869  STATE/COUNTY-  MD/MONTGOMERY
 JV2869  COUNTRY     -  US
 JV2869  USGS QUAD   -  ROCKVILLE (2016)
 JV2869
 JV2869                         *CURRENT SURVEY CONTROL
 JV2869  ______________________________________________________________________
 JV2869* NAD 83(1986) POSITION- 39 03 33.     (N) 077 14 40.     (W)   SCALED
 JV2869* NAVD 88 ORTHO HEIGHT -    75.475 (meters)      247.62  (feet) ADJUSTED
 JV2869  ______________________________________________________________________
 JV2869  GEOID HEIGHT    -        -31.716 (meters)                     GEOID18
 JV2869  DYNAMIC HEIGHT  -         75.436 (meters)      247.49  (feet) COMP
 JV2869  MODELED GRAVITY -    980,109.3   (mgal)                       NAVD 88
 JV2869
 JV2869  VERT ORDER      -  SECOND    CLASS 0
 JV2869
 JV2869.The horizontal coordinates were scaled from a map and have
 JV2869.an estimated accuracy of +/- 6 seconds.
 JV2869
 JV2869.The orthometric height was determined by differential leveling and
 JV2869.adjusted by the NATIONAL GEODETIC SURVEY
 JV2869.in June 1991.
 JV2869
 JV2869.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2869.GEOID18 height accuracy estimate available here.
 JV2869
 JV2869.Click photographs - Photos may exist for this station.
 JV2869
 JV2869.The dynamic height is computed by dividing the NAVD 88
 JV2869.geopotential number by the normal gravity value computed on the
 JV2869.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2869.degrees latitude (g = 980.6199 gals.).
 JV2869
 JV2869.The modeled gravity was interpolated from observed gravity values.
 JV2869
 JV2869;                    North         East    Units  Estimated Accuracy
 JV2869;SPC MD       -   154,600.      378,840.      MT  (+/- 180 meters Scaled)
 JV2869
 JV2869_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ058257(NAD 83)
 JV2869
 JV2869                          SUPERSEDED SURVEY CONTROL
 JV2869
 JV2869  NGVD 29 (11/26/84)   75.700  (m)          248.36   (f) ADJUSTED    2 0
 JV2869
 JV2869.Superseded values are not recommended for survey control.
 JV2869
 JV2869.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2869.See file dsdata.pdf to determine how the superseded data were derived.
 JV2869
 JV2869_MARKER: B = BOLT
 JV2869_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2869_SP_SET: BRIDGE
 JV2869_STAMPING: WSSC BM 3220
 JV2869_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2869
 JV2869  HISTORY     - Date     Condition        Report By
 JV2869  HISTORY     - UNK      MONUMENTED       WSSC
 JV2869  HISTORY     - 1965     GOOD             WSSC
 JV2869
 JV2869                          STATION DESCRIPTION
 JV2869
 JV2869'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2869'4.4 MI NW FROM POTOMAC.
 JV2869'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 JV2869'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC,
 JV2869'THENCE 1.7 MI. N.W. ALONG SOUTH GLEN ROAD, THENCE 1.9 MI. W.
 JV2869'ALONG GLEN ROAD IN THE TOP S.E. END OF THE CONCRETE HEADWALL OF
 JV2869'THE BRIDGE OVER GREENBRIER BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2870 ***********************************************************************
 JV2870  DESIGNATION -  3221 WSSC
 JV2870  PID         -  JV2870
 JV2870  STATE/COUNTY-  MD/MONTGOMERY
 JV2870  COUNTRY     -  US
 JV2870  USGS QUAD   -  SENECA (2016)
 JV2870
 JV2870                         *CURRENT SURVEY CONTROL
 JV2870  ______________________________________________________________________
 JV2870* NAD 83(1986) POSITION- 39 03 54.     (N) 077 15 15.     (W)   SCALED
 JV2870* NAVD 88 ORTHO HEIGHT -    77.998 (meters)      255.90  (feet) ADJUSTED
 JV2870  ______________________________________________________________________
 JV2870  GEOID HEIGHT    -        -31.727 (meters)                     GEOID18
 JV2870  DYNAMIC HEIGHT  -         77.957 (meters)      255.76  (feet) COMP
 JV2870  MODELED GRAVITY -    980,108.1   (mgal)                       NAVD 88
 JV2870
 JV2870  VERT ORDER      -  SECOND    CLASS 0
 JV2870
 JV2870.The horizontal coordinates were scaled from a map and have
 JV2870.an estimated accuracy of +/- 6 seconds.
 JV2870
 JV2870.The orthometric height was determined by differential leveling and
 JV2870.adjusted by the NATIONAL GEODETIC SURVEY
 JV2870.in June 1991.
 JV2870
 JV2870.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2870.GEOID18 height accuracy estimate available here.
 JV2870
 JV2870.Click photographs - Photos may exist for this station.
 JV2870
 JV2870.The dynamic height is computed by dividing the NAVD 88
 JV2870.geopotential number by the normal gravity value computed on the
 JV2870.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2870.degrees latitude (g = 980.6199 gals.).
 JV2870
 JV2870.The modeled gravity was interpolated from observed gravity values.
 JV2870
 JV2870;                    North         East    Units  Estimated Accuracy
 JV2870;SPC MD       -   155,250.      378,000.      MT  (+/- 180 meters Scaled)
 JV2870
 JV2870_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ049264(NAD 83)
 JV2870
 JV2870                          SUPERSEDED SURVEY CONTROL
 JV2870
 JV2870  NGVD 29 (11/26/84)   78.221  (m)          256.63   (f) ADJUSTED    2 0
 JV2870
 JV2870.Superseded values are not recommended for survey control.
 JV2870
 JV2870.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2870.See file dsdata.pdf to determine how the superseded data were derived.
 JV2870
 JV2870_MARKER: B = BOLT
 JV2870_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2870_SP_SET: BRIDGE
 JV2870_STAMPING: WSSC BM 3221
 JV2870_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2870
 JV2870  HISTORY     - Date     Condition        Report By
 JV2870  HISTORY     - UNK      MONUMENTED       WSSC
 JV2870  HISTORY     - 1965     GOOD             WSSC
 JV2870
 JV2870                          STATION DESCRIPTION
 JV2870
 JV2870'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2870'5 MI NW FROM POTOMAC.
 JV2870'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 JV2870'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC,
 JV2870'THENCE 1.7 MI. N.W. ALONG SOUTH GLEN ROAD, THENCE 2.6 MI. W.
 JV2870'ALONG GLEN ROAD IN THE TOP S.E. CORNER OF THE CONCRETE HEADWALL
 JV2870'OF THE BRIDGE OVER SANDY BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2871 ***********************************************************************
 JV2871  DESIGNATION -  3222 WSSC
 JV2871  PID         -  JV2871
 JV2871  STATE/COUNTY-  MD/MONTGOMERY
 JV2871  COUNTRY     -  US
 JV2871  USGS QUAD   -  SENECA (2016)
 JV2871
 JV2871                         *CURRENT SURVEY CONTROL
 JV2871  ______________________________________________________________________
 JV2871* NAD 83(1986) POSITION- 39 04 27.     (N) 077 15 36.     (W)   SCALED
 JV2871* NAVD 88 ORTHO HEIGHT -   110.297 (meters)      361.87  (feet) ADJUSTED
 JV2871  ______________________________________________________________________
 JV2871  GEOID HEIGHT    -        -31.737 (meters)                     GEOID18
 JV2871  DYNAMIC HEIGHT  -        110.240 (meters)      361.68  (feet) COMP
 JV2871  MODELED GRAVITY -    980,106.9   (mgal)                       NAVD 88
 JV2871
 JV2871  VERT ORDER      -  SECOND    CLASS 0
 JV2871
 JV2871.The horizontal coordinates were scaled from a map and have
 JV2871.an estimated accuracy of +/- 6 seconds.
 JV2871
 JV2871.The orthometric height was determined by differential leveling and
 JV2871.adjusted by the NATIONAL GEODETIC SURVEY
 JV2871.in June 1991.
 JV2871
 JV2871.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2871.GEOID18 height accuracy estimate available here.
 JV2871
 JV2871.Click photographs - Photos may exist for this station.
 JV2871
 JV2871.The dynamic height is computed by dividing the NAVD 88
 JV2871.geopotential number by the normal gravity value computed on the
 JV2871.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2871.degrees latitude (g = 980.6199 gals.).
 JV2871
 JV2871.The modeled gravity was interpolated from observed gravity values.
 JV2871
 JV2871;                    North         East    Units  Estimated Accuracy
 JV2871;SPC MD       -   156,270.      377,500.      MT  (+/- 180 meters Scaled)
 JV2871
 JV2871_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ044274(NAD 83)
 JV2871
 JV2871                          SUPERSEDED SURVEY CONTROL
 JV2871
 JV2871  NGVD 29 (11/26/84)  110.517  (m)          362.59   (f) ADJUSTED    2 0
 JV2871
 JV2871.Superseded values are not recommended for survey control.
 JV2871
 JV2871.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2871.See file dsdata.pdf to determine how the superseded data were derived.
 JV2871
 JV2871_MARKER: B = BOLT
 JV2871_SETTING: 0 = UNSPECIFIED SETTING
 JV2871_SP_SET: IRON PIPE
 JV2871_STAMPING: WSSC BM 3222
 JV2871_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2871
 JV2871  HISTORY     - Date     Condition        Report By
 JV2871  HISTORY     - UNK      MONUMENTED       WSSC
 JV2871  HISTORY     - 1965     GOOD             WSSC
 JV2871
 JV2871                          STATION DESCRIPTION
 JV2871
 JV2871'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2871'6 MI NW FROM POTOMAC.
 JV2871'0.75 MI. N. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS INTERSECTION
 JV2871'WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE 1.7 MI. N.W.
 JV2871'ALONG SOUTH GLEN ROAD, THENCE 3.1 MI. W. ALONG GLEN ROAD, THENCE
 JV2871'0.5 MI. N.E. ALONG TRAVILAH ROAD, 0.1 MI. S.W. OF MC CROSSIN
 JV2871'LANE ON THE W. SIDE OF THE ROAD, 29.3 FT. N.W. OF A 24 INCH
 JV2871'LOCUST TREE, 58.3 FT. S.W. ACROSS THE ROAD FROM A FENCE CORNER
 JV2871'AND 29.3 FT. N.W. OF PEPCO POLE 646084 IN AN IRON PIPE LEVEL
 JV2871'WITH THE SURFACE OF THE GROUND.  BENCH MARK MAY ALSO BE REACHED
 JV2871'BY GOING 0.3 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH
 JV2871'STATE HWY. 112 AT DARNESTOWN, THENCE 2.8 MI. S.E. ALONG
 JV2871'TURKEY FOOT ROAD, THENCE 0.4 MI. S. ALONG TRAVILAH ROAD 83.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2895 ***********************************************************************
 JV2895  DESIGNATION -  3223 WSSC
 JV2895  PID         -  JV2895
 JV2895  STATE/COUNTY-  MD/MONTGOMERY
 JV2895  COUNTRY     -  US
 JV2895  USGS QUAD   -  SENECA (2016)
 JV2895
 JV2895                         *CURRENT SURVEY CONTROL
 JV2895  ______________________________________________________________________
 JV2895* NAD 83(1986) POSITION- 39 04 24.     (N) 077 16 35.     (W)   SCALED
 JV2895* NAVD 88 ORTHO HEIGHT -    94.614 (meters)      310.41  (feet) ADJUSTED
 JV2895  ______________________________________________________________________
 JV2895  GEOID HEIGHT    -        -31.755 (meters)                     GEOID18
 JV2895  DYNAMIC HEIGHT  -         94.565 (meters)      310.25  (feet) COMP
 JV2895  MODELED GRAVITY -    980,105.3   (mgal)                       NAVD 88
 JV2895
 JV2895  VERT ORDER      -  SECOND    CLASS 0
 JV2895
 JV2895.The horizontal coordinates were scaled from a map and have
 JV2895.an estimated accuracy of +/- 6 seconds.
 JV2895
 JV2895.The orthometric height was determined by differential leveling and
 JV2895.adjusted by the NATIONAL GEODETIC SURVEY
 JV2895.in June 1991.
 JV2895
 JV2895.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2895.GEOID18 height accuracy estimate available here.
 JV2895
 JV2895.Click photographs - Photos may exist for this station.
 JV2895
 JV2895.The dynamic height is computed by dividing the NAVD 88
 JV2895.geopotential number by the normal gravity value computed on the
 JV2895.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2895.degrees latitude (g = 980.6199 gals.).
 JV2895
 JV2895.The modeled gravity was interpolated from observed gravity values.
 JV2895
 JV2895;                    North         East    Units  Estimated Accuracy
 JV2895;SPC MD       -   156,180.      376,080.      MT  (+/- 180 meters Scaled)
 JV2895
 JV2895_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ030273(NAD 83)
 JV2895
 JV2895                          SUPERSEDED SURVEY CONTROL
 JV2895
 JV2895  NGVD 29 (11/26/84)   94.836  (m)          311.14   (f) ADJUSTED    2 0
 JV2895
 JV2895.Superseded values are not recommended for survey control.
 JV2895
 JV2895.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2895.See file dsdata.pdf to determine how the superseded data were derived.
 JV2895
 JV2895_MARKER: B = BOLT
 JV2895_SETTING: 0 = UNSPECIFIED SETTING
 JV2895_SP_SET: IRON PIPE
 JV2895_STAMPING: WSSC BM 3223
 JV2895_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2895
 JV2895  HISTORY     - Date     Condition        Report By
 JV2895  HISTORY     - UNK      MONUMENTED       WSSC
 JV2895  HISTORY     - 1965     GOOD             WSSC
 JV2895
 JV2895                          STATION DESCRIPTION
 JV2895
 JV2895'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2895'3.3 MI SE FROM DARNESTOWN.
 JV2895'1.3 MI. S. ALONG STATE HWY. 112 FROM ITS JUNCTION WITH STATE
 JV2895'HWY. 28 AT DARNESTOWN, THENCE 1.4 MI. S.E. ALONG ESWORTHY ROAD,
 JV2895'THENCE 0.6 MI. E. ALONG QUERY MILL ROAD AT THE JUNCTION WITH GLEN
 JV2895'ROAD, 59.8 FT. S.E. FROM PEPCO POLE 621797, 34.5 FT. W. OF POLE
 JV2895'621812 AND 28.4 FT. S.W. OF C AND P POLE M-2660 IN A 2-INCH IRON
 JV2895'PIPE LEVEL WITH THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2896 ***********************************************************************
 JV2896  DESIGNATION -  3224
 JV2896  PID         -  JV2896
 JV2896  STATE/COUNTY-  MD/MONTGOMERY
 JV2896  COUNTRY     -  US
 JV2896  USGS QUAD   -  SENECA (2016)
 JV2896
 JV2896                         *CURRENT SURVEY CONTROL
 JV2896  ______________________________________________________________________
 JV2896* NAD 83(1986) POSITION- 39 04 25.     (N) 077 17 13.     (W)   SCALED
 JV2896* NAVD 88 ORTHO HEIGHT -    65.049 (meters)      213.41  (feet) ADJUSTED
 JV2896  ______________________________________________________________________
 JV2896  GEOID HEIGHT    -        -31.768 (meters)                     GEOID18
 JV2896  DYNAMIC HEIGHT  -         65.015 (meters)      213.30  (feet) COMP
 JV2896  MODELED GRAVITY -    980,103.9   (mgal)                       NAVD 88
 JV2896
 JV2896  VERT ORDER      -  SECOND    CLASS 0
 JV2896
 JV2896.The horizontal coordinates were scaled from a map and have
 JV2896.an estimated accuracy of +/- 6 seconds.
 JV2896
 JV2896.The orthometric height was determined by differential leveling and
 JV2896.adjusted by the NATIONAL GEODETIC SURVEY
 JV2896.in June 1991.
 JV2896
 JV2896.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2896.GEOID18 height accuracy estimate available here.
 JV2896
 JV2896.Click photographs - Photos may exist for this station.
 JV2896
 JV2896.The dynamic height is computed by dividing the NAVD 88
 JV2896.geopotential number by the normal gravity value computed on the
 JV2896.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2896.degrees latitude (g = 980.6199 gals.).
 JV2896
 JV2896.The modeled gravity was interpolated from observed gravity values.
 JV2896
 JV2896;                    North         East    Units  Estimated Accuracy
 JV2896;SPC MD       -   156,220.      375,170.      MT  (+/- 180 meters Scaled)
 JV2896
 JV2896_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ021274(NAD 83)
 JV2896
 JV2896                          SUPERSEDED SURVEY CONTROL
 JV2896
 JV2896  NGVD 29 (11/26/84)   65.271  (m)          214.14   (f) ADJUSTED    2 0
 JV2896
 JV2896.Superseded values are not recommended for survey control.
 JV2896
 JV2896.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2896.See file dsdata.pdf to determine how the superseded data were derived.
 JV2896
 JV2896_MARKER: B = BOLT
 JV2896_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JV2896_SP_SET: BRIDGE HEADWALL
 JV2896_MARK LOGO: NONE
 JV2896_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2896_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2896
 JV2896  HISTORY     - Date     Condition        Report By
 JV2896  HISTORY     - UNK      MONUMENTED       WSSC
 JV2896  HISTORY     - 1965     GOOD             WSSC
 JV2896  HISTORY     - 19920120 GOOD             MSI
 JV2896
 JV2896                          STATION DESCRIPTION
 JV2896
 JV2896'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2896'2.7 MI SE FROM DARNESTOWN.
 JV2896'1.3 MI. S. ALONG STATE HWY. 112 FROM ITS JUNCTION WITH STATE
 JV2896'HWY. 28 AT DARNESTOWN, THENCE 1.4 MI. S.E. ALONG ESWORTHY ROAD
 JV2896'IN THE TOP AND CENTERLINE OF THE S. CONCRETE HEADWALL OF THE
 JV2896'BRIDGE OVER MUDDY BRANCH 50 FT. W. OF THE JUNCTION WITH QUERY
 JV2896'MILL ROAD.
 JV2896
 JV2896                          STATION RECOVERY (1992)
 JV2896
 JV2896'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV2896'1.3 MI (2.1 KM) S ALONG STATE HWY 112 FROM ITS JUNCTION WITH STATE
 JV2896'HWY 28 AT DARNESTOWN, THENCE 1.4 MI (2.3 KM) SE ALONG ESWORTHY ROAD
 JV2896'IN THE TOP AND CENTERLINE OF THE S. CONCRETE HEADWALL OF THE BRIDGE
 JV2896'OVER MUDDY BRANCH 50 FT (15.2 M) W OF THE JUNCTION WITH QUERY MILL
 JV2896'ROAD.  NOTE--WSSC BM 3224 IS ENGRAVED IN CONCRETE HEADWALL AROUND THE
 JV2896'BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2897 ***********************************************************************
 JV2897  DESIGNATION -  3225 WSSC
 JV2897  PID         -  JV2897
 JV2897  STATE/COUNTY-  MD/MONTGOMERY
 JV2897  COUNTRY     -  US
 JV2897  USGS QUAD   -  SENECA (2016)
 JV2897
 JV2897                         *CURRENT SURVEY CONTROL
 JV2897  ______________________________________________________________________
 JV2897* NAD 83(1986) POSITION- 39 04 57.     (N) 077 17 42.     (W)   SCALED
 JV2897* NAVD 88 ORTHO HEIGHT -   101.151 (meters)      331.86  (feet) ADJUSTED
 JV2897  ______________________________________________________________________
 JV2897  GEOID HEIGHT    -        -31.786 (meters)                     GEOID18
 JV2897  DYNAMIC HEIGHT  -        101.098 (meters)      331.69  (feet) COMP
 JV2897  MODELED GRAVITY -    980,102.6   (mgal)                       NAVD 88
 JV2897
 JV2897  VERT ORDER      -  SECOND    CLASS 0
 JV2897
 JV2897.The horizontal coordinates were scaled from a map and have
 JV2897.an estimated accuracy of +/- 6 seconds.
 JV2897
 JV2897.The orthometric height was determined by differential leveling and
 JV2897.adjusted by the NATIONAL GEODETIC SURVEY
 JV2897.in June 1991.
 JV2897
 JV2897.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2897.GEOID18 height accuracy estimate available here.
 JV2897
 JV2897.Click photographs - Photos may exist for this station.
 JV2897
 JV2897.The dynamic height is computed by dividing the NAVD 88
 JV2897.geopotential number by the normal gravity value computed on the
 JV2897.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2897.degrees latitude (g = 980.6199 gals.).
 JV2897
 JV2897.The modeled gravity was interpolated from observed gravity values.
 JV2897
 JV2897;                    North         East    Units  Estimated Accuracy
 JV2897;SPC MD       -   157,210.      374,480.      MT  (+/- 180 meters Scaled)
 JV2897
 JV2897_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ014284(NAD 83)
 JV2897
 JV2897                          SUPERSEDED SURVEY CONTROL
 JV2897
 JV2897  NGVD 29 (11/26/84)  101.373  (m)          332.59   (f) ADJUSTED    2 0
 JV2897
 JV2897.Superseded values are not recommended for survey control.
 JV2897
 JV2897.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2897.See file dsdata.pdf to determine how the superseded data were derived.
 JV2897
 JV2897_MARKER: B = BOLT
 JV2897_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2897_SP_SET: HEADWALL
 JV2897_STAMPING: WSSC BM 3225
 JV2897_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2897
 JV2897  HISTORY     - Date     Condition        Report By
 JV2897  HISTORY     - UNK      MONUMENTED       WSSC
 JV2897  HISTORY     - 1965     GOOD             WSSC
 JV2897
 JV2897                          STATION DESCRIPTION
 JV2897
 JV2897'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2897'1.9 MI S FROM DARNESTOWN.
 JV2897'1.3 MI. S. ALONG STATE HWY. 112 FROM ITS JUNCTION WITH STATE HWY.
 JV2897'28 AT DARNESTOWN, THENCE 0.6 MI. S.E. ALONG ESWORTHY ROAD IN
 JV2897'THE TOP END CENTERLINE OF THE S. CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2888 ***********************************************************************
 JV2888  DESIGNATION -  3226 WSSC
 JV2888  PID         -  JV2888
 JV2888  STATE/COUNTY-  MD/MONTGOMERY
 JV2888  COUNTRY     -  US
 JV2888  USGS QUAD   -  ROCKVILLE (2016)
 JV2888
 JV2888                         *CURRENT SURVEY CONTROL
 JV2888  ______________________________________________________________________
 JV2888* NAD 83(1986) POSITION- 39 07 27.     (N) 077 14 54.     (W)   SCALED
 JV2888* NAVD 88 ORTHO HEIGHT -   133.661 (meters)      438.52  (feet) ADJUSTED
 JV2888  ______________________________________________________________________
 JV2888  GEOID HEIGHT    -        -31.761 (meters)                     GEOID18
 JV2888  DYNAMIC HEIGHT  -        133.591 (meters)      438.29  (feet) COMP
 JV2888  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV2888
 JV2888  VERT ORDER      -  SECOND    CLASS 0
 JV2888
 JV2888.The horizontal coordinates were scaled from a map and have
 JV2888.an estimated accuracy of +/- 6 seconds.
 JV2888
 JV2888.The orthometric height was determined by differential leveling and
 JV2888.adjusted by the NATIONAL GEODETIC SURVEY
 JV2888.in June 1991.
 JV2888
 JV2888.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2888.GEOID18 height accuracy estimate available here.
 JV2888
 JV2888.Click photographs - Photos may exist for this station.
 JV2888
 JV2888.The dynamic height is computed by dividing the NAVD 88
 JV2888.geopotential number by the normal gravity value computed on the
 JV2888.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2888.degrees latitude (g = 980.6199 gals.).
 JV2888
 JV2888.The modeled gravity was interpolated from observed gravity values.
 JV2888
 JV2888;                    North         East    Units  Estimated Accuracy
 JV2888;SPC MD       -   161,820.      378,530.      MT  (+/- 180 meters Scaled)
 JV2888
 JV2888_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ056329(NAD 83)
 JV2888
 JV2888                          SUPERSEDED SURVEY CONTROL
 JV2888
 JV2888  NGVD 29 (11/26/84)  133.876  (m)          439.22   (f) ADJUSTED    2 0
 JV2888
 JV2888.Superseded values are not recommended for survey control.
 JV2888
 JV2888.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2888.See file dsdata.pdf to determine how the superseded data were derived.
 JV2888
 JV2888_MARKER: B = BOLT
 JV2888_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2888_SP_SET: HEADWALL
 JV2888_STAMPING: WSSC BM 3226
 JV2888_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2888
 JV2888  HISTORY     - Date     Condition        Report By
 JV2888  HISTORY     - UNK      MONUMENTED       WSSC
 JV2888  HISTORY     - 1966     GOOD             WSSC
 JV2888
 JV2888                          STATION DESCRIPTION
 JV2888
 JV2888'DESCRIBED BY WASH SUBURB SAN COMM 1966
 JV2888'3 MI NE FROM DARNESTOWN.
 JV2888'2.5 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2888'HWY. 112 AT DARNESTOWN, THENCE 0.5 MI. N.E. ALONG STATE HWY. 124
 JV2888'IN THE TOP AND CENTERLINE OF THE N. CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2890 ***********************************************************************
 JV2890  DESIGNATION -  3227 WSSC
 JV2890  PID         -  JV2890
 JV2890  STATE/COUNTY-  MD/MONTGOMERY
 JV2890  COUNTRY     -  US
 JV2890  USGS QUAD   -  GAITHERSBURG (2016)
 JV2890
 JV2890                         *CURRENT SURVEY CONTROL
 JV2890  ______________________________________________________________________
 JV2890* NAD 83(1986) POSITION- 39 08 02.     (N) 077 14 41.     (W)   SCALED
 JV2890* NAVD 88 ORTHO HEIGHT -   129.740 (meters)      425.66  (feet) ADJUSTED
 JV2890  ______________________________________________________________________
 JV2890  GEOID HEIGHT    -        -31.767 (meters)                     GEOID18
 JV2890  DYNAMIC HEIGHT  -        129.672 (meters)      425.43  (feet) COMP
 JV2890  MODELED GRAVITY -    980,102.5   (mgal)                       NAVD 88
 JV2890
 JV2890  VERT ORDER      -  SECOND    CLASS 0
 JV2890
 JV2890.The horizontal coordinates were scaled from a map and have
 JV2890.an estimated accuracy of +/- 6 seconds.
 JV2890
 JV2890.The orthometric height was determined by differential leveling and
 JV2890.adjusted by the NATIONAL GEODETIC SURVEY
 JV2890.in June 1991.
 JV2890
 JV2890.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2890.GEOID18 height accuracy estimate available here.
 JV2890
 JV2890.Click photographs - Photos may exist for this station.
 JV2890
 JV2890.The dynamic height is computed by dividing the NAVD 88
 JV2890.geopotential number by the normal gravity value computed on the
 JV2890.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2890.degrees latitude (g = 980.6199 gals.).
 JV2890
 JV2890.The modeled gravity was interpolated from observed gravity values.
 JV2890
 JV2890;                    North         East    Units  Estimated Accuracy
 JV2890;SPC MD       -   162,900.      378,840.      MT  (+/- 180 meters Scaled)
 JV2890
 JV2890_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ059340(NAD 83)
 JV2890
 JV2890                          SUPERSEDED SURVEY CONTROL
 JV2890
 JV2890  NGVD 29 (11/26/84)  129.954  (m)          426.36   (f) ADJUSTED    2 0
 JV2890
 JV2890.Superseded values are not recommended for survey control.
 JV2890
 JV2890.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2890.See file dsdata.pdf to determine how the superseded data were derived.
 JV2890
 JV2890_MARKER: B = BOLT
 JV2890_SETTING: 0 = UNSPECIFIED SETTING
 JV2890_SP_SET: IRON PIPE
 JV2890_STAMPING: WSSC BM 3227
 JV2890_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2890
 JV2890  HISTORY     - Date     Condition        Report By
 JV2890  HISTORY     - UNK      MONUMENTED       WSSC
 JV2890  HISTORY     - 1966     GOOD             WSSC
 JV2890
 JV2890                          STATION DESCRIPTION
 JV2890
 JV2890'DESCRIBED BY WASH SUBURB SAN COMM 1966
 JV2890'3.6 MI N FROM DARNESTOWN.
 JV2890'2.5 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2890'HWY. 112 AT DARNESTOWN, THENCE 0.75 MI. N.E. ALONG STATE HWY.
 JV2890'124, THENCE 0.35 MI. N. ALONG LONG DRAUGHT ROAD.  25.90 FT. W.
 JV2890'OF C AND P POLE 11, 7.50 FT. S. OF PEPCO POLE 631385 AND 4.0 FT.
 JV2890'E. OF A 20 INCH OAK TREE.  IN AN IRON PIPE 0.4 FT. BELOW THE
 JV2890'SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2891 ***********************************************************************
 JV2891  DESIGNATION -  3228 WSSC
 JV2891  PID         -  JV2891
 JV2891  STATE/COUNTY-  MD/MONTGOMERY
 JV2891  COUNTRY     -  US
 JV2891  USGS QUAD   -  GAITHERSBURG (2016)
 JV2891
 JV2891                         *CURRENT SURVEY CONTROL
 JV2891  ______________________________________________________________________
 JV2891* NAD 83(1986) POSITION- 39 08 27.     (N) 077 14 33.     (W)   SCALED
 JV2891* NAVD 88 ORTHO HEIGHT -   102.753 (meters)      337.12  (feet) ADJUSTED
 JV2891  ______________________________________________________________________
 JV2891  GEOID HEIGHT    -        -31.771 (meters)                     GEOID18
 JV2891  DYNAMIC HEIGHT  -        102.699 (meters)      336.94  (feet) COMP
 JV2891  MODELED GRAVITY -    980,102.1   (mgal)                       NAVD 88
 JV2891
 JV2891  VERT ORDER      -  SECOND    CLASS 0
 JV2891
 JV2891.The horizontal coordinates were scaled from a map and have
 JV2891.an estimated accuracy of +/- 6 seconds.
 JV2891
 JV2891.The orthometric height was determined by differential leveling and
 JV2891.adjusted by the NATIONAL GEODETIC SURVEY
 JV2891.in June 1991.
 JV2891
 JV2891.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2891.GEOID18 height accuracy estimate available here.
 JV2891
 JV2891.Click photographs - Photos may exist for this station.
 JV2891
 JV2891.The dynamic height is computed by dividing the NAVD 88
 JV2891.geopotential number by the normal gravity value computed on the
 JV2891.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2891.degrees latitude (g = 980.6199 gals.).
 JV2891
 JV2891.The modeled gravity was interpolated from observed gravity values.
 JV2891
 JV2891;                    North         East    Units  Estimated Accuracy
 JV2891;SPC MD       -   163,670.      379,040.      MT  (+/- 180 meters Scaled)
 JV2891
 JV2891_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ061347(NAD 83)
 JV2891
 JV2891                          SUPERSEDED SURVEY CONTROL
 JV2891
 JV2891  NGVD 29 (11/26/84)  102.966  (m)          337.81   (f) ADJUSTED    2 0
 JV2891
 JV2891.Superseded values are not recommended for survey control.
 JV2891
 JV2891.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2891.See file dsdata.pdf to determine how the superseded data were derived.
 JV2891
 JV2891_MARKER: B = BOLT
 JV2891_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2891_SP_SET: BRIDGE
 JV2891_STAMPING: WSSC BM 3228
 JV2891_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2891
 JV2891  HISTORY     - Date     Condition        Report By
 JV2891  HISTORY     - UNK      MONUMENTED       WSSC
 JV2891  HISTORY     - 1966     GOOD             WSSC
 JV2891
 JV2891                          STATION DESCRIPTION
 JV2891
 JV2891'DESCRIBED BY WASH SUBURB SAN COMM 1966
 JV2891'4.2 MI N FROM DARNESTOWN.
 JV2891'2.5 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2891'HWY. 112 AT DARNESTOWN, THENCE 0.75 MI. N.E. ALONG STATE HWY.
 JV2891'124, THENCE 0.9 MI. N. ALONG LONG DRAUGHT ROAD IN THE TOP OF
 JV2891'THE N.W. WINGWALL OF THE CONCRETE BRIDGE OVER LONG DRAUGHT BRANCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2892 ***********************************************************************
 JV2892  DESIGNATION -  3229 WSSC
 JV2892  PID         -  JV2892
 JV2892  STATE/COUNTY-  MD/MONTGOMERY
 JV2892  COUNTRY     -  US
 JV2892  USGS QUAD   -  GAITHERSBURG (2016)
 JV2892
 JV2892                         *CURRENT SURVEY CONTROL
 JV2892  ______________________________________________________________________
 JV2892* NAD 83(1986) POSITION- 39 08 54.     (N) 077 14 17.     (W)   SCALED
 JV2892* NAVD 88 ORTHO HEIGHT -   124.900 (meters)      409.78  (feet) ADJUSTED
 JV2892  ______________________________________________________________________
 JV2892  GEOID HEIGHT    -        -31.774 (meters)                     GEOID18
 JV2892  DYNAMIC HEIGHT  -        124.834 (meters)      409.56  (feet) COMP
 JV2892  MODELED GRAVITY -    980,101.9   (mgal)                       NAVD 88
 JV2892
 JV2892  VERT ORDER      -  SECOND    CLASS 0
 JV2892
 JV2892.The horizontal coordinates were scaled from a map and have
 JV2892.an estimated accuracy of +/- 6 seconds.
 JV2892
 JV2892.The orthometric height was determined by differential leveling and
 JV2892.adjusted by the NATIONAL GEODETIC SURVEY
 JV2892.in June 1991.
 JV2892
 JV2892.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2892.GEOID18 height accuracy estimate available here.
 JV2892
 JV2892.Click photographs - Photos may exist for this station.
 JV2892
 JV2892.The dynamic height is computed by dividing the NAVD 88
 JV2892.geopotential number by the normal gravity value computed on the
 JV2892.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2892.degrees latitude (g = 980.6199 gals.).
 JV2892
 JV2892.The modeled gravity was interpolated from observed gravity values.
 JV2892
 JV2892;                    North         East    Units  Estimated Accuracy
 JV2892;SPC MD       -   164,500.      379,420.      MT  (+/- 180 meters Scaled)
 JV2892
 JV2892_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ065356(NAD 83)
 JV2892
 JV2892                          SUPERSEDED SURVEY CONTROL
 JV2892
 JV2892  NGVD 29 (11/26/84)  125.110  (m)          410.47   (f) ADJUSTED    2 0
 JV2892
 JV2892.Superseded values are not recommended for survey control.
 JV2892
 JV2892.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2892.See file dsdata.pdf to determine how the superseded data were derived.
 JV2892
 JV2892_MARKER: B = BOLT
 JV2892_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2892_SP_SET: HEADWALL
 JV2892_STAMPING: WSSC BM 3229
 JV2892_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2892
 JV2892  HISTORY     - Date     Condition        Report By
 JV2892  HISTORY     - UNK      MONUMENTED       WSSC
 JV2892  HISTORY     - 1966     GOOD             WSSC
 JV2892
 JV2892                          STATION DESCRIPTION
 JV2892
 JV2892'DESCRIBED BY WASH SUBURB SAN COMM 1966
 JV2892'4.8 MI N FROM DARNESTOWN.
 JV2892'2.5 MI. N.E. ALONG STATE HWY. 112 AT DARNESTOWN, THENCE 0.75 MI.
 JV2892'N.E. ALONG STATE HWY. 124, THENCE 1.5 MI. N. ALONG LONG DRAUGHT
 JV2892'ROAD, AT THE JUNCTION WITH CLOPPER ROAD.  IN THE TOP AND CENTERLINE
 JV2892'OF THE CONCRETE HEADWALL IN THE S.W. CORNER OF THE JUNCTION.
 JV2892'BENCH MARK MAY ALSO BE REACHED BY GOING 1.2 MI. W. ALONG STATE
 JV2892'HWY. 124 FROM ITS INTERSECTION WITH STATE HWY. 355 AT GAITHERSBURG
 JV2892'THENCE 1.0 MI. W. ALONG CLOPPER ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2893 ***********************************************************************
 JV2893  DESIGNATION -  3230 WSSC
 JV2893  PID         -  JV2893
 JV2893  STATE/COUNTY-  MD/MONTGOMERY
 JV2893  COUNTRY     -  US
 JV2893  USGS QUAD   -  GAITHERSBURG (2016)
 JV2893
 JV2893                         *CURRENT SURVEY CONTROL
 JV2893  ______________________________________________________________________
 JV2893* NAD 83(1986) POSITION- 39 08 59.0    (N) 077 14 34.1    (W)   HD_HELD2
 JV2893* NAVD 88 ORTHO HEIGHT -   140.653 (meters)      461.46  (feet) ADJUSTED
 JV2893  ______________________________________________________________________
 JV2893  GEOID HEIGHT    -        -31.780 (meters)                     GEOID18
 JV2893  DYNAMIC HEIGHT  -        140.580 (meters)      461.22  (feet) COMP
 JV2893  MODELED GRAVITY -    980,101.6   (mgal)                       NAVD 88
 JV2893
 JV2893  VERT ORDER      -  SECOND    CLASS 0
 JV2893
 JV2893.The horizontal coordinates were established by autonomous hand held GPS
 JV2893.observations and have an estimated accuracy of +/- 10 meters.
 JV2893
 JV2893.The orthometric height was determined by differential leveling and
 JV2893.adjusted by the NATIONAL GEODETIC SURVEY
 JV2893.in June 1991.
 JV2893
 JV2893.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2893.GEOID18 height accuracy estimate available here.
 JV2893
 JV2893.Click photographs - Photos may exist for this station.
 JV2893
 JV2893.The dynamic height is computed by dividing the NAVD 88
 JV2893.geopotential number by the normal gravity value computed on the
 JV2893.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2893.degrees latitude (g = 980.6199 gals.).
 JV2893
 JV2893.The modeled gravity was interpolated from observed gravity values.
 JV2893
 JV2893;                    North         East    Units  Estimated Accuracy
 JV2893;SPC MD       -   164,655.      379,012.      MT  (+/- 10 meters HH2 GPS)
 JV2893
 JV2893_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0619135787(NAD 83)
 JV2893
 JV2893                          SUPERSEDED SURVEY CONTROL
 JV2893
 JV2893  NGVD 29 (11/26/84)  140.863  (m)          462.15   (f) ADJUSTED    2 0
 JV2893
 JV2893.Superseded values are not recommended for survey control.
 JV2893
 JV2893.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2893.See file dsdata.pdf to determine how the superseded data were derived.
 JV2893
 JV2893_MARKER: B = BOLT
 JV2893_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2893_SP_SET: STEP
 JV2893_STAMPING: WSSC BM 3230
 JV2893_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2893_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2893+SATELLITE: SATELLITE OBSERVATIONS - November 21, 2003
 JV2893
 JV2893  HISTORY     - Date     Condition        Report By
 JV2893  HISTORY     - UNK      MONUMENTED       WSSC
 JV2893  HISTORY     - 1966     GOOD             WSSC
 JV2893  HISTORY     - 20031121 GOOD             GEOCAC
 JV2893
 JV2893                          STATION DESCRIPTION
 JV2893
 JV2893'DESCRIBED BY WASH SUBURB SAN COMM 1966
 JV2893'0.5 MI S FROM DARNESTOWN.
 JV2893'2.5 MI. N.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE
 JV2893'HWY. 112 AT DARNESTOWN, THENCE 0.75 MI. N.E. ALONG STATE HWY.
 JV2893'124, THENCE 1.5 MI. N. ALONG LONGDRAUGH ROAD, THENCE 0.3 MI. W.
 JV2893'ALONG CLOPPER ROAD.  IN THE THIRD CONCRETE STEP LEADING TO A
 JV2893'WHITE FRAME CHURCH ABOUT 250 FT. E. OF A GAME PRESERVE ROAD.
 JV2893'BENCH MARK MAY ALSO BE REACHED BY GOING 1.2 MI. ALONG STATE HWY.
 JV2893'124 FROM ITS INTERSECTION WITH STATE HWY. 355 AT GAITHERSBURG
 JV2893'THENCE 1.3 MI. W. ALONG CLOPPER ROAD.
 JV2893
 JV2893                          STATION RECOVERY (2003)
 JV2893
 JV2893'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV2893'FOUND AS DESCRIBED IN CONCRETE STEPS IN FRONT OF WHITE-PAINTED WOODEN
 JV2893'ST. ROSE OF LIMA ROMAN CATHOLIC CHURCH. BOLT IS SURROUNDED BY A
 JV2893'WASHER/COLLAR STAMPED W.S.S.C. B.M. NO. 3230
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2115 ***********************************************************************
 HV2115  DESIGNATION -  3232
 HV2115  PID         -  HV2115
 HV2115  STATE/COUNTY-  MD/MONTGOMERY
 HV2115  COUNTRY     -  US
 HV2115  USGS QUAD   -  FALLS CHURCH (2019)
 HV2115
 HV2115                         *CURRENT SURVEY CONTROL
 HV2115  ______________________________________________________________________
 HV2115* NAD 83(1986) POSITION- 38 59 44.9    (N) 077 13 51.9    (W)   HD_HELD2
 HV2115* NAVD 88 ORTHO HEIGHT -   115.019 (meters)      377.36  (feet) ADJUSTED
 HV2115  ______________________________________________________________________
 HV2115  GEOID HEIGHT    -        -31.725 (meters)                     GEOID18
 HV2115  DYNAMIC HEIGHT  -        114.959 (meters)      377.16  (feet) COMP
 HV2115  MODELED GRAVITY -    980,108.4   (mgal)                       NAVD 88
 HV2115
 HV2115  VERT ORDER      -  SECOND    CLASS 0
 HV2115
 HV2115.The horizontal coordinates were established by autonomous hand held GPS
 HV2115.observations and have an estimated accuracy of +/- 10 meters.
 HV2115
 HV2115.The orthometric height was determined by differential leveling and
 HV2115.adjusted by the NATIONAL GEODETIC SURVEY
 HV2115.in June 1991.
 HV2115
 HV2115.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2115.GEOID18 height accuracy estimate available here.
 HV2115
 HV2115.Click photographs - Photos may exist for this station.
 HV2115
 HV2115.The dynamic height is computed by dividing the NAVD 88
 HV2115.geopotential number by the normal gravity value computed on the
 HV2115.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2115.degrees latitude (g = 980.6199 gals.).
 HV2115
 HV2115.The modeled gravity was interpolated from observed gravity values.
 HV2115
 HV2115;                    North         East    Units  Estimated Accuracy
 HV2115;SPC MD       -   147,566.      379,982.      MT  (+/- 10 meters HH2 GPS)
 HV2115
 HV2115_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0678418678(NAD 83)
 HV2115
 HV2115                          SUPERSEDED SURVEY CONTROL
 HV2115
 HV2115  NGVD 29 (11/26/84)  115.256  (m)          378.14   (f) ADJUSTED    2 0
 HV2115
 HV2115.Superseded values are not recommended for survey control.
 HV2115
 HV2115.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2115.See file dsdata.pdf to determine how the superseded data were derived.
 HV2115
 HV2115_MARKER: B = BOLT
 HV2115_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2115_STAMPING: WSSC BM 3232
 HV2115_MARK LOGO: WSSC
 HV2115_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2115_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2115+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2009
 HV2115
 HV2115  HISTORY     - Date     Condition        Report By
 HV2115  HISTORY     - UNK      MONUMENTED       WSSC
 HV2115  HISTORY     - 1966     GOOD             WSSC
 HV2115  HISTORY     - 20001106 GOOD             USPSQD
 HV2115  HISTORY     - 20060318 GOOD             GEOCAC
 HV2115  HISTORY     - 20090329 GOOD             NGS
 HV2115
 HV2115                          STATION DESCRIPTION
 HV2115
 HV2115'DESCRIBED BY WASH SUBURB SAN COMM 1966
 HV2115'2 MI SW FROM POTOMAC.
 HV2115'2.0 MI S.W. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 HV2115'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC AT THE
 HV2115'JUNCTION WITH MAC ARTHUR BLVD. ON THE S. SIDE OF THE BLVD. 28.7
 HV2115'FT. N.E. OF A CONCRETE MONUMENT 24.2 FT. N.W. OF A 15 INCH POPLAR
 HV2115'TREE AND 17.9 FT. S.E. OF PEPCO POLE 621609 IN A 2 INCH IRON
 HV2115'PIPE 0.4 FT. BELOW THE SURFACE OF THE GROUND.
 HV2115
 HV2115                          STATION RECOVERY (2000)
 HV2115
 HV2115'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2115'RECOVERED IN GOOD CONDITION.
 HV2115
 HV2115                          STATION RECOVERY (2006)
 HV2115
 HV2115'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 HV2115'FOUND AS DESCRIBED, AND ABOUT 0.8 FEET NORTHEAST OF A CARSONITE
 HV2115'WITNESS POST, AND ABOUT 8 FEET SOUTH OF REFLECTORIZED WARNING SIGNS
 HV2115'MOUNTED ON A PAIR OF METAL POSTS. ON A SMALL RISE, ABOUT 2 FEET ABOVE
 HV2115'THE ROADWAY SURFACE.
 HV2115
 HV2115                          STATION RECOVERY (2009)
 HV2115
 HV2115'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 HV2115'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3983 ***********************************************************************
 JV3983  DESIGNATION -  3233 WSSC
 JV3983  PID         -  JV3983
 JV3983  STATE/COUNTY-  MD/MONTGOMERY
 JV3983  COUNTRY     -  US
 JV3983  USGS QUAD   -  ROCKVILLE (2016)
 JV3983
 JV3983                         *CURRENT SURVEY CONTROL
 JV3983  ______________________________________________________________________
 JV3983* NAD 83(1986) POSITION- 39 00 02.     (N) 077 14 21.     (W)   SCALED
 JV3983* NAVD 88 ORTHO HEIGHT -    84.002 (meters)      275.60  (feet) ADJUSTED
 JV3983  ______________________________________________________________________
 JV3983  GEOID HEIGHT    -        -31.720 (meters)                     GEOID18
 JV3983  DYNAMIC HEIGHT  -         83.958 (meters)      275.45  (feet) COMP
 JV3983  MODELED GRAVITY -    980,110.7   (mgal)                       NAVD 88
 JV3983
 JV3983  VERT ORDER      -  SECOND    CLASS 0
 JV3983
 JV3983.The horizontal coordinates were scaled from a map and have
 JV3983.an estimated accuracy of +/- 6 seconds.
 JV3983
 JV3983.The orthometric height was determined by differential leveling and
 JV3983.adjusted by the NATIONAL GEODETIC SURVEY
 JV3983.in June 1991.
 JV3983
 JV3983.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3983.GEOID18 height accuracy estimate available here.
 JV3983
 JV3983.Click photographs - Photos may exist for this station.
 JV3983
 JV3983.The dynamic height is computed by dividing the NAVD 88
 JV3983.geopotential number by the normal gravity value computed on the
 JV3983.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3983.degrees latitude (g = 980.6199 gals.).
 JV3983
 JV3983.The modeled gravity was interpolated from observed gravity values.
 JV3983
 JV3983;                    North         East    Units  Estimated Accuracy
 JV3983;SPC MD       -   148,100.      379,280.      MT  (+/- 180 meters Scaled)
 JV3983
 JV3983_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ060192(NAD 83)
 JV3983
 JV3983                          SUPERSEDED SURVEY CONTROL
 JV3983
 JV3983  NGVD 29 (11/26/84)   84.242  (m)          276.38   (f) ADJUSTED    2 0
 JV3983
 JV3983.Superseded values are not recommended for survey control.
 JV3983
 JV3983.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3983.See file dsdata.pdf to determine how the superseded data were derived.
 JV3983
 JV3983_MARKER: B = BOLT
 JV3983_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV3983_STAMPING: WSSC BM 3233
 JV3983_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3983
 JV3983  HISTORY     - Date     Condition        Report By
 JV3983  HISTORY     - UNK      MONUMENTED       WSSC
 JV3983  HISTORY     - 1966     GOOD             WSSC
 JV3983
 JV3983                          STATION DESCRIPTION
 JV3983
 JV3983'DESCRIBED BY WASH SUBURB SAN COMM 1966
 JV3983'0.5 MI E FROM GREAT FALLS.
 JV3983'2.0 MI. S.W. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 JV3983'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC, THENCE
 JV3983'0.8 MI. W. ALONG MAC ARTHUR BLVD.  58.8 FT. W. OF PEPCO POLE 621630,
 JV3983'29.5 FT. N.E. OF A 15 INCH OAK TREE AND 22.9 FT. S.E. OF A 36
 JV3983'INCH OAK TREE IN A 2 INCH IRON PIPE 0.4 FT. BELOW THE SURFACE OF
 JV3983'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2837 ***********************************************************************
 JV2837  DESIGNATION -  3234 WSSC
 JV2837  PID         -  JV2837
 JV2837  STATE/COUNTY-  MD/MONTGOMERY
 JV2837  COUNTRY     -  US
 JV2837  USGS QUAD   -  ROCKVILLE (2016)
 JV2837
 JV2837                         *CURRENT SURVEY CONTROL
 JV2837  ______________________________________________________________________
 JV2837* NAD 83(1986) POSITION- 39 04 33.     (N) 077 11 25.     (W)   SCALED
 JV2837* NAVD 88 ORTHO HEIGHT -   118.287 (meters)      388.08  (feet) ADJUSTED
 JV2837  ______________________________________________________________________
 JV2837  GEOID HEIGHT    -        -31.704 (meters)                     GEOID18
 JV2837  DYNAMIC HEIGHT  -        118.226 (meters)      387.88  (feet) COMP
 JV2837  MODELED GRAVITY -    980,107.3   (mgal)                       NAVD 88
 JV2837
 JV2837  VERT ORDER      -  SECOND    CLASS 0
 JV2837
 JV2837.The horizontal coordinates were scaled from a map and have
 JV2837.an estimated accuracy of +/- 6 seconds.
 JV2837
 JV2837.The orthometric height was determined by differential leveling and
 JV2837.adjusted by the NATIONAL GEODETIC SURVEY
 JV2837.in June 1991.
 JV2837
 JV2837.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2837.GEOID18 height accuracy estimate available here.
 JV2837
 JV2837.Click photographs - Photos may exist for this station.
 JV2837
 JV2837.The dynamic height is computed by dividing the NAVD 88
 JV2837.geopotential number by the normal gravity value computed on the
 JV2837.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2837.degrees latitude (g = 980.6199 gals.).
 JV2837
 JV2837.The modeled gravity was interpolated from observed gravity values.
 JV2837
 JV2837;                    North         East    Units  Estimated Accuracy
 JV2837;SPC MD       -   156,440.      383,540.      MT  (+/- 180 meters Scaled)
 JV2837
 JV2837_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ105274(NAD 83)
 JV2837
 JV2837                          SUPERSEDED SURVEY CONTROL
 JV2837
 JV2837  NGVD 29 (11/26/84)  118.512  (m)          388.82   (f) ADJUSTED    2 0
 JV2837
 JV2837.Superseded values are not recommended for survey control.
 JV2837
 JV2837.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2837.See file dsdata.pdf to determine how the superseded data were derived.
 JV2837
 JV2837_MARKER: B = BOLT
 JV2837_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2837_SP_SET: HEADWALL
 JV2837_STAMPING: WSSC BM 3234
 JV2837_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2837
 JV2837  HISTORY     - Date     Condition        Report By
 JV2837  HISTORY     - UNK      MONUMENTED       WSSC
 JV2837  HISTORY     - 1965     GOOD             WSSC
 JV2837  HISTORY     - 20001106 GOOD             USPSQD
 JV2837
 JV2837                          STATION DESCRIPTION
 JV2837
 JV2837'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2837'2.6 MI SW FROM ROCKVILLE.
 JV2837'1.4 MI. S.W. ALONG STATE HWY. 189 (FALLS ROAD) FROM THE COURTHOUSE
 JV2837'IN ROCKVILLE THENCE 1.2 MI. W. ALONG SCOTT DRIVE IN THE TOP
 JV2837'AND CENTERLINE OF THE S. CONCRETE HEADWALL NEAR PEPCO POLE 63697.
 JV2837
 JV2837                          STATION RECOVERY (2000)
 JV2837
 JV2837'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2837'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2838 ***********************************************************************
 JV2838  DESIGNATION -  3235 WSSC
 JV2838  PID         -  JV2838
 JV2838  STATE/COUNTY-  MD/MONTGOMERY
 JV2838  COUNTRY     -  US
 JV2838  USGS QUAD   -  ROCKVILLE (2016)
 JV2838
 JV2838                         *CURRENT SURVEY CONTROL
 JV2838  ______________________________________________________________________
 JV2838* NAD 83(1986) POSITION- 39 04 23.     (N) 077 11 04.     (W)   SCALED
 JV2838* NAVD 88 ORTHO HEIGHT -    94.152 (meters)      308.90  (feet) ADJUSTED
 JV2838  ______________________________________________________________________
 JV2838  GEOID HEIGHT    -        -31.707 (meters)                     GEOID18
 JV2838  DYNAMIC HEIGHT  -         94.103 (meters)      308.74  (feet) COMP
 JV2838  MODELED GRAVITY -    980,106.6   (mgal)                       NAVD 88
 JV2838
 JV2838  VERT ORDER      -  SECOND    CLASS 0
 JV2838
 JV2838.The horizontal coordinates were scaled from a map and have
 JV2838.an estimated accuracy of +/- 6 seconds.
 JV2838
 JV2838.The orthometric height was determined by differential leveling and
 JV2838.adjusted by the NATIONAL GEODETIC SURVEY
 JV2838.in June 1991.
 JV2838
 JV2838.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2838.GEOID18 height accuracy estimate available here.
 JV2838
 JV2838.Click photographs - Photos may exist for this station.
 JV2838
 JV2838.The dynamic height is computed by dividing the NAVD 88
 JV2838.geopotential number by the normal gravity value computed on the
 JV2838.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2838.degrees latitude (g = 980.6199 gals.).
 JV2838
 JV2838.The modeled gravity was interpolated from observed gravity values.
 JV2838
 JV2838;                    North         East    Units  Estimated Accuracy
 JV2838;SPC MD       -   156,130.      384,040.      MT  (+/- 180 meters Scaled)
 JV2838
 JV2838_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ110271(NAD 83)
 JV2838
 JV2838                          SUPERSEDED SURVEY CONTROL
 JV2838
 JV2838  NGVD 29 (11/26/84)   94.377  (m)          309.64   (f) ADJUSTED    2 0
 JV2838
 JV2838.Superseded values are not recommended for survey control.
 JV2838
 JV2838.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2838.See file dsdata.pdf to determine how the superseded data were derived.
 JV2838
 JV2838_MARKER: B = BOLT
 JV2838_SETTING: 0 = UNSPECIFIED SETTING
 JV2838_SP_SET: IRON PIPE
 JV2838_STAMPING: WSSC BM 3235
 JV2838_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2838
 JV2838  HISTORY     - Date     Condition        Report By
 JV2838  HISTORY     - UNK      MONUMENTED       WSSC
 JV2838  HISTORY     - 1965     GOOD             WSSC
 JV2838  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV2838
 JV2838                          STATION DESCRIPTION
 JV2838
 JV2838'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2838'2.2 MI SW FROM ROCKVILLE.
 JV2838'1.4 MI. S.W. ALONG STATE HWY. 189 (FALLS ROAD) FROM THE COURTHOUSE
 JV2838'IN ROCKVILLE, THENCE 0.8 MI. W. ALONG SCOTT DRIVE.  71.6 FT. S.
 JV2838'S.E. ACROSS OF SCOTT DRIVE FROM PEPCO POLE 647241, 38.5 FT. S.W.
 JV2838'OF PEPCO POLE 637431, AND 17.8 FT. W. OF PEPCO POLE 637248.  IN A
 JV2838'2 INCH IRON PIPE 0.4 FT. BELOW THE SURFACE OF THE GROUND.
 JV2838
 JV2838                          STATION RECOVERY (2000)
 JV2838
 JV2838'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2838'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2839 ***********************************************************************
 JV2839  DESIGNATION -  3236 WSSC
 JV2839  PID         -  JV2839
 JV2839  STATE/COUNTY-  MD/MONTGOMERY
 JV2839  COUNTRY     -  US
 JV2839  USGS QUAD   -  ROCKVILLE (2016)
 JV2839
 JV2839                         *CURRENT SURVEY CONTROL
 JV2839  ______________________________________________________________________
 JV2839* NAD 83(1986) POSITION- 39 04 16.     (N) 077 10 31.     (W)   SCALED
 JV2839* NAVD 88 ORTHO HEIGHT -   119.671 (meters)      392.62  (feet) ADJUSTED
 JV2839  ______________________________________________________________________
 JV2839  GEOID HEIGHT    -        -31.711 (meters)                     GEOID18
 JV2839  DYNAMIC HEIGHT  -        119.609 (meters)      392.42  (feet) COMP
 JV2839  MODELED GRAVITY -    980,104.7   (mgal)                       NAVD 88
 JV2839
 JV2839  VERT ORDER      -  SECOND    CLASS 0
 JV2839
 JV2839.The horizontal coordinates were scaled from a map and have
 JV2839.an estimated accuracy of +/- 6 seconds.
 JV2839
 JV2839.The orthometric height was determined by differential leveling and
 JV2839.adjusted by the NATIONAL GEODETIC SURVEY
 JV2839.in June 1991.
 JV2839
 JV2839.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2839.GEOID18 height accuracy estimate available here.
 JV2839
 JV2839.Click photographs - Photos may exist for this station.
 JV2839
 JV2839.The dynamic height is computed by dividing the NAVD 88
 JV2839.geopotential number by the normal gravity value computed on the
 JV2839.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2839.degrees latitude (g = 980.6199 gals.).
 JV2839
 JV2839.The modeled gravity was interpolated from observed gravity values.
 JV2839
 JV2839;                    North         East    Units  Estimated Accuracy
 JV2839;SPC MD       -   155,920.      384,830.      MT  (+/- 180 meters Scaled)
 JV2839
 JV2839_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ118269(NAD 83)
 JV2839
 JV2839                          SUPERSEDED SURVEY CONTROL
 JV2839
 JV2839  NGVD 29 (11/26/84)  119.896  (m)          393.36   (f) ADJUSTED    2 0
 JV2839
 JV2839.Superseded values are not recommended for survey control.
 JV2839
 JV2839.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2839.See file dsdata.pdf to determine how the superseded data were derived.
 JV2839
 JV2839_MARKER: B = BOLT
 JV2839_SETTING: 0 = UNSPECIFIED SETTING
 JV2839_SP_SET: IRON PIPE
 JV2839_STAMPING: WSSC BM 3236
 JV2839_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2839
 JV2839  HISTORY     - Date     Condition        Report By
 JV2839  HISTORY     - UNK      MONUMENTED       WSSC
 JV2839  HISTORY     - 1965     GOOD             WSSC
 JV2839  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV2839
 JV2839                          STATION DESCRIPTION
 JV2839
 JV2839'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2839'1.8 MI SW FROM ROCKVILLE.
 JV2839'1.4 MI. S.W. ALONG STATE HWY. 189 (FALLS ROAD) FROM THE COURTHOUSE
 JV2839'IN ROCKVILLE, THENCE 0.35 MI. W. ALONG SCOTT DRIVE ON THE S. SIDE
 JV2839'OF SCOTT DRIVE, 57.3 FT. E. OF A 15 IN. OAK TREE, 7.4 FT. W. OF
 JV2839'PEPCO POLE 634299 IN A 2 INCH IRON PIPE 0.2 FT. BELOW THE SURFACE
 JV2839'OF THE GROUND.
 JV2839
 JV2839                          STATION RECOVERY (2000)
 JV2839
 JV2839'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2839'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2840 ***********************************************************************
 JV2840  DESIGNATION -  3237 WSSC
 JV2840  PID         -  JV2840
 JV2840  STATE/COUNTY-  MD/MONTGOMERY
 JV2840  COUNTRY     -  US
 JV2840  USGS QUAD   -  ROCKVILLE (2016)
 JV2840
 JV2840                         *CURRENT SURVEY CONTROL
 JV2840  ______________________________________________________________________
 JV2840* NAD 83(1986) POSITION- 39 04 13.     (N) 077 10 16.     (W)   SCALED
 JV2840* NAVD 88 ORTHO HEIGHT -   130.430 (meters)      427.92  (feet) ADJUSTED
 JV2840  ______________________________________________________________________
 JV2840  GEOID HEIGHT    -        -31.713 (meters)                     GEOID18
 JV2840  DYNAMIC HEIGHT  -        130.362 (meters)      427.70  (feet) COMP
 JV2840  MODELED GRAVITY -    980,103.8   (mgal)                       NAVD 88
 JV2840
 JV2840  VERT ORDER      -  SECOND    CLASS 0
 JV2840
 JV2840.The horizontal coordinates were scaled from a map and have
 JV2840.an estimated accuracy of +/- 6 seconds.
 JV2840
 JV2840.The orthometric height was determined by differential leveling and
 JV2840.adjusted by the NATIONAL GEODETIC SURVEY
 JV2840.in June 1991.
 JV2840
 JV2840.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2840.GEOID18 height accuracy estimate available here.
 JV2840
 JV2840.Click photographs - Photos may exist for this station.
 JV2840
 JV2840.The dynamic height is computed by dividing the NAVD 88
 JV2840.geopotential number by the normal gravity value computed on the
 JV2840.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2840.degrees latitude (g = 980.6199 gals.).
 JV2840
 JV2840.The modeled gravity was interpolated from observed gravity values.
 JV2840
 JV2840;                    North         East    Units  Estimated Accuracy
 JV2840;SPC MD       -   155,820.      385,190.      MT  (+/- 180 meters Scaled)
 JV2840
 JV2840_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ121268(NAD 83)
 JV2840
 JV2840                          SUPERSEDED SURVEY CONTROL
 JV2840
 JV2840  NGVD 29 (11/26/84)  130.654  (m)          428.65   (f) ADJUSTED    2 0
 JV2840
 JV2840.Superseded values are not recommended for survey control.
 JV2840
 JV2840.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2840.See file dsdata.pdf to determine how the superseded data were derived.
 JV2840
 JV2840_MARKER: B = BOLT
 JV2840_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2840_SP_SET: HEADWALL
 JV2840_STAMPING: WSSC BM 3237
 JV2840_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2840
 JV2840  HISTORY     - Date     Condition        Report By
 JV2840  HISTORY     - UNK      MONUMENTED       WSSC
 JV2840  HISTORY     - 1965     GOOD             WSSC
 JV2840  HISTORY     - 20001106 GOOD             USPSQD
 JV2840
 JV2840                          STATION DESCRIPTION
 JV2840
 JV2840'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2840'1.5 MI SW FROM ROCKVILLE.
 JV2840'1.4 MI. S.W. ALONG STATE HWY. 189 (FALLS ROAD) FROM THE COURTHOUSE
 JV2840'IN ROCKVILLE, THENCE 0.1 MI. W. ALONG SCOTT DRIVE NEAR A GROUP OF
 JV2840'CEDAR TREES IN THE TOP AND CENTERLINE OF THE N. CONCRETE HEADWALL.
 JV2840
 JV2840                          STATION RECOVERY (2000)
 JV2840
 JV2840'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2840'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0896 ***********************************************************************
 HV0896  DESIGNATION -  3253 WSSC
 HV0896  PID         -  HV0896
 HV0896  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0896  COUNTRY     -  US
 HV0896  USGS QUAD   -  BRISTOL (2016)
 HV0896
 HV0896                         *CURRENT SURVEY CONTROL
 HV0896  ______________________________________________________________________
 HV0896* NAD 83(1986) POSITION- 38 49 14.     (N) 076 44 44.     (W)   SCALED
 HV0896* NAVD 88 ORTHO HEIGHT -     8.024 (meters)       26.33  (feet) ADJUSTED
 HV0896  ______________________________________________________________________
 HV0896  GEOID HEIGHT    -        -32.930 (meters)                     GEOID18
 HV0896  DYNAMIC HEIGHT  -          8.019 (meters)       26.31  (feet) COMP
 HV0896  MODELED GRAVITY -    980,068.3   (mgal)                       NAVD 88
 HV0896
 HV0896  VERT ORDER      -  FIRST     CLASS I
 HV0896
 HV0896.The horizontal coordinates were scaled from a map and have
 HV0896.an estimated accuracy of +/- 6 seconds.
 HV0896
 HV0896.The orthometric height was determined by differential leveling and
 HV0896.adjusted by the NATIONAL GEODETIC SURVEY
 HV0896.in June 1991.
 HV0896
 HV0896.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0896.GEOID18 height accuracy estimate available here.
 HV0896
 HV0896.Click photographs - Photos may exist for this station.
 HV0896
 HV0896.The dynamic height is computed by dividing the NAVD 88
 HV0896.geopotential number by the normal gravity value computed on the
 HV0896.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0896.degrees latitude (g = 980.6199 gals.).
 HV0896
 HV0896.The modeled gravity was interpolated from observed gravity values.
 HV0896
 HV0896;                    North         East    Units  Estimated Accuracy
 HV0896;SPC MD       -   128,120.      422,100.      MT  (+/- 180 meters Scaled)
 HV0896
 HV0896_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH484983(NAD 83)
 HV0896
 HV0896                          SUPERSEDED SURVEY CONTROL
 HV0896
 HV0896  NGVD 29 (11/26/84)    8.260  (m)           27.10   (f) ADJUSTED    1 1
 HV0896
 HV0896.Superseded values are not recommended for survey control.
 HV0896
 HV0896.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0896.See file dsdata.pdf to determine how the superseded data were derived.
 HV0896
 HV0896_MARKER: B = BOLT
 HV0896_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0896_SP_SET: BRIDGE ABUTMENT
 HV0896_STAMPING: BM NO 3253 WSSC
 HV0896_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0896
 HV0896  HISTORY     - Date     Condition        Report By
 HV0896  HISTORY     - UNK      MONUMENTED       WSSC
 HV0896  HISTORY     - 1971     GOOD             NGS
 HV0896  HISTORY     - 20041224 MARK NOT FOUND   GEOCAC
 HV0896
 HV0896                          STATION DESCRIPTION
 HV0896
 HV0896'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0896'AT UPPER MARLBORO.
 HV0896'AT UPPER MARLBORO, ABOUT 0.45 MILE NORTHEAST ALONG MAIN STREET
 HV0896'FROM THE POST OFFICE, 193 FEET NORTH ALONG STATE HIGHWAY 202
 HV0896'FROM THE CENTER LINE OF THE STREET, SET IN THE TOP OF THE EAST
 HV0896'END OF THE NORTH CONCRETE ABUTMENT OF A 66-FOOT HIGHWAY BRIDGE
 HV0896'OVER COLLINGTON BRANCH, 17 1/2 FEET EAST OF THE CENTER LINE OF
 HV0896'THE HIGHWAY, AND ABOUT 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
 HV0896
 HV0896                          STATION RECOVERY (2004)
 HV0896
 HV0896'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV0896'STATION APPARENTLY LOST WHEN NEW BRIDGE (STRUCTURE 1603200) WAS
 HV0896'CONSTRUCTED AT THIS LOCATION IN 1991.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8502 ***********************************************************************
 AI8502  DESIGNATION -  32IA
 AI8502  PID         -  AI8502
 AI8502  STATE/COUNTY-  MD/HOWARD
 AI8502  COUNTRY     -  US
 AI8502  USGS QUAD   -  RELAY (2016)
 AI8502
 AI8502                         *CURRENT SURVEY CONTROL
 AI8502  ______________________________________________________________________
 AI8502* NAD 83(2011) POSITION- 39 13 04.30652(N) 076 42 26.91478(W)   ADJUSTED
 AI8502* NAD 83(2011) ELLIP HT-   -24.331 (meters)        (06/27/12)   ADJUSTED
 AI8502* NAD 83(2011) EPOCH   -  2010.00
 AI8502* NAVD 88 ORTHO HEIGHT -     8.2   (meters)       27.    (feet) GPS OBS
 AI8502  ______________________________________________________________________
 AI8502  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8502  GEOID HEIGHT    -        -32.532 (meters)                     GEOID99
 AI8502  GEOID HEIGHT    -        -32.545 (meters)                     GEOID18
 AI8502  NAD 83(2011) X  -  1,137,669.638 (meters)                     COMP
 AI8502  NAD 83(2011) Y  - -4,815,487.830 (meters)                     COMP
 AI8502  NAD 83(2011) Z  -  4,011,069.181 (meters)                     COMP
 AI8502  LAPLACE CORR    -         -6.42  (seconds)                    DEFLEC18
 AI8502
 AI8502  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8502  Standards:
 AI8502         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8502            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8502  -------------------------------------------------------------------
 AI8502  NETWORK    1.39   1.57           0.65   0.44   0.80      0.01366872
 AI8502  -------------------------------------------------------------------
 AI8502  Click here for local accuracies and other accuracy information.
 AI8502
 AI8502.The horizontal coordinates were established by GPS observations
 AI8502.and adjusted by the National Geodetic Survey in June 2012.
 AI8502
 AI8502.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8502.been affixed to the stable North American tectonic plate. See 
 AI8502.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8502
 AI8502.The horizontal coordinates are valid at the epoch date displayed above
 AI8502.which is a decimal equivalence of Year/Month/Day.
 AI8502
 AI8502.The orthometric height was determined by GPS observations and a
 AI8502.high-resolution geoid model.
 AI8502
 AI8502.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8502.GEOID18 height accuracy estimate available here.
 AI8502
 AI8502.Click photographs - Photos may exist for this station.
 AI8502
 AI8502.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8502
 AI8502.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8502
 AI8502.The ellipsoidal height was determined by GPS observations
 AI8502.and is referenced to NAD 83.
 AI8502
 AI8502. The following values were computed from the NAD 83(2011) position.
 AI8502
 AI8502;                    North         East     Units Scale Factor Converg.
 AI8502;SPC MD       -   172,232.293   425,261.519   MT  0.99996763   +0 11 01.0
 AI8502;SPC MD       -   565,065.45  1,395,212.17   sFT  0.99996763   +0 11 01.0
 AI8502;UTM  18      - 4,342,342.460   352,596.695   MT  0.99986753   -1 04 47.2
 AI8502
 AI8502!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8502!SPC MD       -   1.00000382  x   0.99996763  =   0.99997145
 AI8502!UTM  18      -   1.00000382  x   0.99986753  =   0.99987135
 AI8502
 AI8502_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5259642342(NAD 83)
 AI8502
 AI8502                          SUPERSEDED SURVEY CONTROL
 AI8502
 AI8502  NAD 83(2007)-  39 13 04.30683(N)    076 42 26.91581(W) AD(2002.00) 0
 AI8502  ELLIP H (02/10/07)  -24.308  (m)                       GP(2002.00)    
 AI8502  ELLIP H (08/30/02)  -24.311  (m)                       GP(       ) 4 2
 AI8502  NAD 83(1991)-  39 13 04.30653(N)    076 42 26.91555(W) AD(       ) 1
 AI8502  ELLIP H (11/16/00)  -24.375  (m)                       GP(       ) 4 1
 AI8502
 AI8502.Superseded values are not recommended for survey control.
 AI8502
 AI8502.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8502.See file dsdata.pdf to determine how the superseded data were derived.
 AI8502
 AI8502_MARKER: DD = SURVEY DISK
 AI8502_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8502_STAMPING: 32IA
 AI8502_MARK LOGO: MD-027
 AI8502_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8502_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8502+STABILITY: SURFACE MOTION
 AI8502_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8502+SATELLITE: SATELLITE OBSERVATIONS - August 26, 2009
 AI8502
 AI8502  HISTORY     - Date     Condition        Report By
 AI8502  HISTORY     - 1994     MONUMENTED       MD-027
 AI8502  HISTORY     - 20000915 GOOD             MD-027
 AI8502  HISTORY     - 20030126 MARK NOT FOUND   USPSQD
 AI8502  HISTORY     - 20090826 GOOD             STANTI
 AI8502
 AI8502                          STATION DESCRIPTION
 AI8502
 AI8502'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8502'DESCRIPTION BY HOWARD COUNTY 2000 THE STATION IS LOCATED AT
 AI8502'ELKRIDGE  ON THE SLOPED TRIANGLE FORMED  BY THE  EXIT RAMP FROM
 AI8502'INTERSTATE  ROUTE 985 (HARBOR TUNNEL  HIGHWAY)  TO  ROUTE US 1 AND
 AI8502'ROUTE US1  (SOUTHBOUND LANE).  TO REACH THE STATION FROM THE
 AI8502'INTERSECTION OF STATE HIGHWAY 166  (METROPOLITAN BOULEVARD) AND
 AI8502'ROUTE US 1 SOUTH (IN BALTIMORE  COUNTY)  GO SOUTH 0.4 MILES ALONG
 AI8502'ROUTE 1  SOUTH TO THE STATION ON  YOUR RIGHT.    THE STATION IS
 AI8502'ABOUT 500 FEET SOUTHWEST OF THE CENTERLINE OF THE  PATAPSCO
 AI8502'RIVER,  ABOUT 600 FEET NORTHEAST OF  LEVERING AVENUE. IT IS  ON THE
 AI8502'MENTIONED SLOPE BETWEEN THE  RAMP AND THE WEST SIDE OF  ROUTE 1
 AI8502'SOUTH. IT IS 73 FEET NORTHWEST OF POLE G AND E 487813,   81.75
 AI8502'FEET
 AI8502'NORTH OF POLE G  AND E 229974 AND 8.5 FEET SOUTH EAST OF THE
 AI8502'NEAREST  GUARD RAIL POST ON THE RAMP SIDE OF THE SLOPE.    THE
 AI8502'STATION IS A  STANDARD HOWARD COUNTY SURVEY DISC, FLUSH WITH  THE
 AI8502'GROUND.
 AI8502'
 AI8502
 AI8502                          STATION RECOVERY (2003)
 AI8502
 AI8502'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 AI8502'MARK NOT FOUND.
 AI8502
 AI8502                          STATION RECOVERY (2009)
 AI8502
 AI8502'RECOVERY NOTE BY STANTEC CONSULTING INC. 2009 (CK)
 AI8502'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1538 ***********************************************************************
 JV1538  DESIGNATION -  33
 JV1538  PID         -  JV1538
 JV1538  STATE/COUNTY-  MD/BALTIMORE
 JV1538  COUNTRY     -  US
 JV1538  USGS QUAD   -  NEW FREEDOM (2019)
 JV1538
 JV1538                         *CURRENT SURVEY CONTROL
 JV1538  ______________________________________________________________________
 JV1538* NAD 83(1986) POSITION- 39 40 20.2    (N) 076 40 29.5    (W)   HD_HELD2
 JV1538* NAVD 88 ORTHO HEIGHT -   152.732 (meters)      501.09  (feet) ADJUSTED
 JV1538  ______________________________________________________________________
 JV1538  GEOID HEIGHT    -        -32.294 (meters)                     GEOID18
 JV1538  DYNAMIC HEIGHT  -        152.658 (meters)      500.85  (feet) COMP
 JV1538  MODELED GRAVITY -    980,133.9   (mgal)                       NAVD 88
 JV1538
 JV1538  VERT ORDER      -  SECOND    CLASS 0
 JV1538
 JV1538.The horizontal coordinates were established by autonomous hand held GPS
 JV1538.observations and have an estimated accuracy of +/- 10 meters.
 JV1538
 JV1538.The orthometric height was determined by differential leveling and
 JV1538.adjusted by the NATIONAL GEODETIC SURVEY
 JV1538.in June 1991.
 JV1538
 JV1538.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1538.GEOID18 height accuracy estimate available here.
 JV1538
 JV1538.Click photographs - Photos may exist for this station.
 JV1538
 JV1538.The dynamic height is computed by dividing the NAVD 88
 JV1538.geopotential number by the normal gravity value computed on the
 JV1538.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1538.degrees latitude (g = 980.6199 gals.).
 JV1538
 JV1538.The modeled gravity was interpolated from observed gravity values.
 JV1538
 JV1538;                    North         East    Units  Estimated Accuracy
 JV1538;SPC MD       -   222,693.      427,898.      MT  (+/- 10 meters HH2 GPS)
 JV1538
 JV1538_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5634992724(NAD 83)
 JV1538
 JV1538                          SUPERSEDED SURVEY CONTROL
 JV1538
 JV1538  NGVD 29 (11/26/84)  152.945  (m)          501.79   (f) ADJUSTED    2 0
 JV1538
 JV1538.Superseded values are not recommended for survey control.
 JV1538
 JV1538.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1538.See file dsdata.pdf to determine how the superseded data were derived.
 JV1538
 JV1538_MARKER: B = BOLT
 JV1538_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1538_SP_SET: RAILROAD BRIDGE ABUTMENT
 JV1538_MARK LOGO: NONE
 JV1538_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1538_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1538_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1538+SATELLITE: SATELLITE OBSERVATIONS - June 26, 1997
 JV1538
 JV1538  HISTORY     - Date     Condition        Report By
 JV1538  HISTORY     - UNK      MONUMENTED       PRR
 JV1538  HISTORY     - 1942     GOOD             CGS
 JV1538  HISTORY     - 19970626 GOOD             MD-005
 JV1538  HISTORY     - 20070420 GOOD             MD-005
 JV1538
 JV1538                          STATION DESCRIPTION
 JV1538
 JV1538'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1538'1.2 MI N FROM WALKER.
 JV1538'1.2 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE FORMER
 JV1538'STATION AT WALKER, BALTIMORE COUNTY, 0.2 MILE SOUTH OF THE
 JV1538'BENTLEY STATION, AT BRIDGE 31.18 OVER BEETREE RUN, IN THE TOP
 JV1538'OF THE WEST WING OF THE NORTH ABUTMENT, AND 9 FEET WEST OF THE
 JV1538'CENTERLINE OF THE WEST TRACK.  A COPPER BOLT.
 JV1538
 JV1538                          STATION RECOVERY (1997)
 JV1538
 JV1538'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV1538'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) . STATION
 JV1538'IS LOCATED ABOUT 3.25 MILES (5.23 KM) SOUTH-SOUTHWEST OF THE TOWN OF
 JV1538'MARYLAND LINE AND 1.7 MILES (2.7 KM) NORTHWEST OF PARKTON ALONG THE
 JV1538'OLD PENNSYLVANIA RAILWAY, NOW THE GUNPOWDER STATE PARK TRAIL.  TO
 JV1538'REACH THE STATION FROM THE ROUTE 439 (OLD YORK ROAD) OVERPASS OF
 JV1538'INTERSTATE 83 AT EXIT 36, GO WEST ON ROUTE 439 FOR 0.2 MILES (0.3 KM)
 JV1538'TO THE INTERSCTION WITH ROUTE 45 (YORK ROAD) .  TURN LEFT AND GO SOUTH
 JV1538'ON ROUTE 45 FOR 1.25 MILES (2.01 KM) TO THE INTERSECTION WITH BENTLEY
 JV1538'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ON BENTLEY ROAD FOR
 JV1538'0.8 MILES (1.3 KM) TO A FIVE WAY INTERSECTION WITH KAUFMAN ROAD AND
 JV1538'CAMERON MILL ROAD.  BEAR RIGHT AND CONTINUE WEST AND SOUTHWEST ON
 JV1538'BENTLEY ROAD FOR 0.9 MILES (1.4 KM) TO THE GUNPOWDER STATE PARK TRAIL
 JV1538'CROSSING.  STATION IS LOCATED ABOUT 650 SOUTHWEST ALONG THE GUNPOWDER
 JV1538'STATE PARK TRAIL ON THE WEST SIDE OF THE NORTH ABUTMENT WALL OF
 JV1538'RAILWAY BRIDGE 31.18 OVER BEETREE RUN. STATION MARK IS A 1 INCH
 JV1538'DIAMETER COPPER BOLT SET FLUSH WITH THE ABUTMENT WALL.
 JV1538
 JV1538                          STATION RECOVERY (2007)
 JV1538
 JV1538'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 JV1538'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2007 (PAS).
 JV1538'ADDITIONAL INFORMATION FOR THE STATION FOLLOWS - THE STATION IS 1.4
 JV1538'FEET EAST OF THE EDGE OF THE ABUTMENT WALL, 3.2 FEET NORTHWEST OF THE
 JV1538'NORTH END OF A CHAIN LINK FENCE AND 15.7 FEET WEST OF THE CENTER OF
 JV1538'THE TRAIL. THE STATION IS ABOUT 1 FOOT BELOW THE TRAIL SURFACE.
 JV1538'THE STATION IS LOCATED IN A MODERATELY WOODED AREA WITH SOME AREAS
 JV1538'OPEN TO THE SKY. GPS OBSERVATIONS MAY BE AVAILABLE SEASONALLY AND NOT
 JV1538'YEAR-ROUND. THE MARK IS NEAR THE EDGE OF THE ABUTMENT WALL SO A BIPOD
 JV1538'OR OTHER SPECIAL EQUIPMENT MAY BE NEEDED WHEN ATTEMPTING TO SETUP
 JV1538'EQUIPMENT OVER THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2617 ***********************************************************************
 JV2617  DESIGNATION -  33
 JV2617  PID         -  JV2617
 JV2617  STATE/COUNTY-  MD/MONTGOMERY
 JV2617  COUNTRY     -  US
 JV2617  USGS QUAD   -  KENSINGTON (2016)
 JV2617
 JV2617                         *CURRENT SURVEY CONTROL
 JV2617  ______________________________________________________________________
 JV2617* NAD 83(1986) POSITION- 39 06 33.     (N) 077 04 35.     (W)   SCALED
 JV2617* NAVD 88 ORTHO HEIGHT -   151.89  (+/-2cm)      498.3   (feet) VERTCON3
 JV2617  ______________________________________________________________________
 JV2617  GEOID HEIGHT    -        -31.815 (meters)                     GEOID18
 JV2617  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2617
 JV2617.The horizontal coordinates were scaled from a map and have
 JV2617.an estimated accuracy of +/- 6 seconds.
 JV2617
 JV2617.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2617.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2617
 JV2617.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2617.GEOID18 height accuracy estimate available here.
 JV2617
 JV2617.The vertical order pertains to the NGVD 29 superseded value.
 JV2617
 JV2617.Click photographs - Photos may exist for this station.
 JV2617
 JV2617;                    North         East    Units  Estimated Accuracy
 JV2617;SPC MD       -   160,130.      393,390.      MT  (+/- 180 meters Scaled)
 JV2617
 JV2617_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ204309(NAD 83)
 JV2617
 JV2617                          SUPERSEDED SURVEY CONTROL
 JV2617
 JV2617  NGVD 29 (11/26/84)  152.103  (m)          499.02   (f) ADJUSTED    2 0
 JV2617
 JV2617.Superseded values are not recommended for survey control.
 JV2617
 JV2617.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2617.See file dsdata.pdf to determine how the superseded data were derived.
 JV2617
 JV2617_MARKER: DD = SURVEY DISK
 JV2617_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2617_STAMPING: 33
 JV2617_MARK LOGO: CGS+SS
 JV2617_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2617+STABILITY: SURFACE MOTION
 JV2617
 JV2617  HISTORY     - Date     Condition        Report By
 JV2617  HISTORY     - 1934     MONUMENTED       MDGS
 JV2617  HISTORY     - 1944     GOOD             WSSC
 JV2617  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2617
 JV2617                          STATION DESCRIPTION
 JV2617
 JV2617'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2617'AT NORBECK.
 JV2617'ON GEORGIA AVENUE (STATE HIGHWAY 97), OPPOSITE A ROAD LEADING
 JV2617'WEST TO ROCKVILLE, 47.7 FEET EAST ACROSS THE HIGHWAY FROM
 JV2617'A SERVICE STATION, 23.2 FEET SOUTH OF TELEPHONE POLE 200, 32.6
 JV2617'FEET NORTH OF P.E.P. CO. POLE 75813, AND 14 FEET EAST OF THE EAST
 JV2617'EDGE OF THE HIGHWAY.
 JV2617
 JV2617                          STATION RECOVERY (1995)
 JV2617
 JV2617'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2617'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4410 ***********************************************************************
 AI4410  DESIGNATION -  33 PRR ECC
 AI4410  PID         -  AI4410
 AI4410  STATE/COUNTY-  MD/BALTIMORE
 AI4410  COUNTRY     -  US
 AI4410  USGS QUAD   -  NEW FREEDOM (2019)
 AI4410
 AI4410                         *CURRENT SURVEY CONTROL
 AI4410  ______________________________________________________________________
 AI4410* NAD 83(2011) POSITION- 39 40 29.90200(N) 076 40 14.50870(W)   ADJUSTED
 AI4410* NAD 83(2011) ELLIP HT-   124.098 (meters)        (06/27/12)   ADJUSTED
 AI4410* NAD 83(2011) EPOCH   -  2010.00
 AI4410* NAVD 88 ORTHO HEIGHT -   156.38  (meters)      513.1   (feet) LEVELING
 AI4410  ______________________________________________________________________
 AI4410  GEOID HEIGHT    -        -32.300 (meters)                     GEOID18
 AI4410  NAD 83(2011) X  -  1,133,353.087 (meters)                     COMP
 AI4410  NAD 83(2011) Y  - -4,783,492.096 (meters)                     COMP
 AI4410  NAD 83(2011) Z  -  4,050,353.939 (meters)                     COMP
 AI4410  LAPLACE CORR    -         -1.45  (seconds)                    DEFLEC18
 AI4410  VERT ORDER      -  THIRD ?
 AI4410
 AI4410  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4410  Standards:
 AI4410         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4410            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4410  -------------------------------------------------------------------
 AI4410  NETWORK    0.64   1.08           0.28   0.24   0.55     -0.07707787
 AI4410  -------------------------------------------------------------------
 AI4410  Click here for local accuracies and other accuracy information.
 AI4410
 AI4410.The horizontal coordinates were established by GPS observations
 AI4410.and adjusted by the National Geodetic Survey in June 2012.
 AI4410
 AI4410.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4410.been affixed to the stable North American tectonic plate. See 
 AI4410.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4410
 AI4410.The horizontal coordinates are valid at the epoch date displayed above
 AI4410.which is a decimal equivalence of Year/Month/Day.
 AI4410
 AI4410.The orthometric height was determined by differential leveling.
 AI4410.The vertical network tie was performed by a horz. field party for horz.
 AI4410.obs reductions. Reset procedures were used to establish the elevation.
 AI4410
 AI4410.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4410.GEOID18 height accuracy estimate available here.
 AI4410
 AI4410.Click photographs - Photos may exist for this station.
 AI4410
 AI4410.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4410
 AI4410.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4410
 AI4410.The ellipsoidal height was determined by GPS observations
 AI4410.and is referenced to NAD 83.
 AI4410
 AI4410. The following values were computed from the NAD 83(2011) position.
 AI4410
 AI4410;                    North         East     Units Scale Factor Converg.
 AI4410;SPC MD       -   222,993.056   428,254.607   MT  1.00004711   +0 12 24.1
 AI4410;SPC MD       -   731,603.05  1,405,031.99   sFT  1.00004711   +0 12 24.1
 AI4410;UTM  18      - 4,393,017.331   356,712.172   MT  0.99985278   -1 04 00.5
 AI4410
 AI4410!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4410!SPC MD       -   0.99998053  x   1.00004711  =   1.00002764
 AI4410!UTM  18      -   0.99998053  x   0.99985278  =   0.99983331
 AI4410
 AI4410_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5671293017(NAD 83)
 AI4410
 AI4410                          SUPERSEDED SURVEY CONTROL
 AI4410
 AI4410  NAD 83(2007)-  39 40 29.90219(N)    076 40 14.50940(W) AD(2002.00) 0
 AI4410  ELLIP H (02/10/07)  124.118  (m)                       GP(2002.00)    
 AI4410  ELLIP H (08/30/02)  124.123  (m)                       GP(       ) 4 2
 AI4410  NAD 83(1991)-  39 40 29.90249(N)    076 40 14.50939(W) AD(       ) 1
 AI4410  ELLIP H (03/31/00)  124.045  (m)                       GP(       ) 3 1
 AI4410
 AI4410.Superseded values are not recommended for survey control.
 AI4410
 AI4410.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4410.See file dsdata.pdf to determine how the superseded data were derived.
 AI4410
 AI4410_MARKER: N = NAIL
 AI4410_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AI4410_SP_SET: MASONRY NAIL IN PARKING LOT
 AI4410_MARK LOGO: NONE
 AI4410_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI4410_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI4410_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4410+SATELLITE: SATELLITE OBSERVATIONS - 1997
 AI4410
 AI4410  HISTORY     - Date     Condition        Report By
 AI4410  HISTORY     - 1997     MONUMENTED       MD-005
 AI4410  HISTORY     - 20211229 MARK NOT FOUND   MD-005
 AI4410
 AI4410                          STATION DESCRIPTION
 AI4410
 AI4410'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4410'DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) . STATION
 AI4410'IS LOCATED ABOUT 3.15 MILES (5.07 KM) SOUTH-SOUTHWEST OF THE TOWN OF
 AI4410'MARYLAND LINE, 1.7 MILES (2.7 KM) NORTHWEST OF PARKTON, ALONG THE OLD
 AI4410'PENNSYLVANIA RAILWAY, NOW THE GUNPOWDER STATE PARK TRAIL.  TO REACH
 AI4410'THE STATION FROM THE ROUTE 439 (OLD YORK ROAD) OVERPASS OF INTERSTATE
 AI4410'83 AT EXIT 36, GO WEST ON ROUTE 439 FOR 0.2 MILES (0.3 KM) TO THE
 AI4410'INTERSCTION WITH ROUTE 45 (YORK ROAD) .  TURN LEFT AND GO SOUTH ON
 AI4410'ROUTE 45 FOR 1.25 MILES (2.01 KM) TO THE INTERSECTION WITH BENTLEY
 AI4410'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ON BENTLEY ROAD FOR
 AI4410'0.8 MILES (1.3 KM) TO A FIVE WAY INTERSECTION WITH KAUFMAN ROAD AND
 AI4410'CAMERON MILL ROAD.  BEAR RIGHT AND CONTINUE WEST AND SOUTHWEST ON
 AI4410'BENTLEY ROAD FOR 0.8 MILES (1.3 KM) TO A PAVED PARKING LOT FOR THE
 AI4410'GUNPOWDER STATE PARK TRAIL.  STATION MARK IS A MASONRY NAIL NEAR THE
 AI4410'NORTHWEST CORNER OF THE PARKING LOT.  IT IS 34.0 FEET (10.4 M)
 AI4410'NORTHEAST FROM THE END OF A WOOD FENCE AT AN OPENING TO THE TRAIL,
 AI4410'10.7 FEET (3.3 M) SOUTHEAST FROM A BREAK OF THE WOOD FENCE AND IS
 AI4410'NORTHEAST OF A WHITE HOUSE NUMBERED 542.
 AI4410
 AI4410                          STATION RECOVERY (2021)
 AI4410
 AI4410'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2021 (JG)
 AI4410'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2618 ***********************************************************************
 JV2618  DESIGNATION -  33 RESET
 JV2618  PID         -  JV2618
 JV2618  STATE/COUNTY-  MD/MONTGOMERY
 JV2618  COUNTRY     -  US
 JV2618  USGS QUAD   -  KENSINGTON (2016)
 JV2618
 JV2618                         *CURRENT SURVEY CONTROL
 JV2618  ______________________________________________________________________
 JV2618* NAD 83(1986) POSITION- 39 06 33.     (N) 077 04 35.     (W)   SCALED
 JV2618* NAVD 88 ORTHO HEIGHT -   151.54  (+/-2cm)      497.2   (feet) VERTCON3
 JV2618  ______________________________________________________________________
 JV2618  GEOID HEIGHT    -        -31.815 (meters)                     GEOID18
 JV2618  VERT ORDER      -  THIRD (See Below)
 JV2618
 JV2618.The horizontal coordinates were scaled from a map and have
 JV2618.an estimated accuracy of +/- 6 seconds.
 JV2618
 JV2618.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2618.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2618
 JV2618.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2618.GEOID18 height accuracy estimate available here.
 JV2618
 JV2618.The vertical order pertains to the NGVD 29 superseded value.
 JV2618
 JV2618.Click photographs - Photos may exist for this station.
 JV2618
 JV2618;                    North         East    Units  Estimated Accuracy
 JV2618;SPC MD       -   160,130.      393,390.      MT  (+/- 180 meters Scaled)
 JV2618
 JV2618_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ204309(NAD 83)
 JV2618
 JV2618                          SUPERSEDED SURVEY CONTROL
 JV2618
 JV2618  NGVD 29 (??/??/??)  151.75   (m)          497.9    (f) RESET       3  
 JV2618
 JV2618.Superseded values are not recommended for survey control.
 JV2618
 JV2618.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2618.See file dsdata.pdf to determine how the superseded data were derived.
 JV2618
 JV2618_MARKER: DD = SURVEY DISK
 JV2618_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV2618+WITH SETTING: PAVEMENT
 JV2618_SP_SET: LIGHT STANDARD BASE
 JV2618_STAMPING: 33 RESET 1965
 JV2618_MARK LOGO: CGS+SS
 JV2618_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2618+STABILITY: SURFACE MOTION
 JV2618
 JV2618  HISTORY     - Date     Condition        Report By
 JV2618  HISTORY     - 1965     MONUMENTED       MDGS
 JV2618  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2618
 JV2618                          STATION DESCRIPTION
 JV2618
 JV2618'DESCRIBED BY MARYLAND GEODETIC SURVEY 1965
 JV2618'AT NORBECK.
 JV2618'AT NORBECK, AT THE SW CORNER OF THE JUNCTION OF STATE HIGHWAY 28
 JV2618'AND STATE HIGHWAY 97 (GEORGIA AVENUE) AT A PHILLIPS 66 SERVICE
 JV2618'STATION, 31 FEET S. OF STATE HIGHWAY 28, 75 FEET W. OF STATE
 JV2618'HIGHWAY 97, SET IN THE TOP OF THE NW CORNER OF THE CONCRETE
 JV2618'BASE OF THE SECOND LIGHT STANDARD W. OF HIGHWAY 97.
 JV2618
 JV2618                          STATION RECOVERY (1995)
 JV2618
 JV2618'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2618'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0228 ***********************************************************************
 HU0228  DESIGNATION -  33.14 RESET
 HU0228  PID         -  HU0228
 HU0228  STATE/COUNTY-  MD/WORCESTER
 HU0228  COUNTRY     -  US
 HU0228  USGS QUAD   -  GIRDLETREE (2016)
 HU0228
 HU0228                         *CURRENT SURVEY CONTROL
 HU0228  ______________________________________________________________________
 HU0228* NAD 83(1986) POSITION- 38 03 18.     (N) 075 24 38.     (W)   SCALED
 HU0228* NAVD 88 ORTHO HEIGHT -     9.51  (meters)       31.2   (feet) RESET
 HU0228  ______________________________________________________________________
 HU0228  GEOID HEIGHT    -        -36.360 (meters)                     GEOID18
 HU0228  VERT ORDER      -  THIRD
 HU0228
 HU0228.The horizontal coordinates were scaled from a map and have
 HU0228.an estimated accuracy of +/- 6 seconds.
 HU0228
 HU0228.The orthometric height was computed from unverified reset data.
 HU0228
 HU0228.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0228.GEOID18 height accuracy estimate available here.
 HU0228
 HU0228.Click photographs - Photos may exist for this station.
 HU0228
 HU0228;                    North         East    Units  Estimated Accuracy
 HU0228;SPC MD       -    44,320.      539,500.      MT  (+/- 180 meters Scaled)
 HU0228
 HU0228_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH639119(NAD 83)
 HU0228
 HU0228                          SUPERSEDED SURVEY CONTROL
 HU0228
 HU0228  NGVD 29 (??/??/??)    9.75   (m)           32.0    (f) RESET       3  
 HU0228
 HU0228.Superseded values are not recommended for survey control.
 HU0228
 HU0228.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0228.See file dsdata.pdf to determine how the superseded data were derived.
 HU0228
 HU0228_MARKER: DD = SURVEY DISK
 HU0228_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0228_STAMPING: 33.14 RESET 1964
 HU0228_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0228+STABILITY: SURFACE MOTION
 HU0228
 HU0228  HISTORY     - Date     Condition        Report By
 HU0228  HISTORY     - 1964     MONUMENTED       MDDT
 HU0228
 HU0228                          STATION DESCRIPTION
 HU0228
 HU0228'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1964
 HU0228'0.2 MI NW FROM STOCKTON.
 HU0228'TO REACH FROM THE JUNCTION AT MD. ROUTES 21 AND 366 AT STOCKTON,
 HU0228'GO WEST ON MD. 366 FOR 0.15 MILE TO DRIVEWAY LEADING NORTH TO THE
 HU0228'CHICKEN FACTORY, THENCE RIGHT (NORTH) FOR 0.05 MILE TO ANOTHER
 HU0228'DRIVEWAY LEADING WEST.  MARK IS SET 80.0 FEET EAST OF THE
 HU0228'CENTERLINE OF THE NORTH-SOUTH DRIVEWAY, 29.5 FEET NORTH OF CORNER
 HU0228'OF OLD FRAME CHURCH AND 2.0 FEET EAST OF THE POWER POLE, AND SET
 HU0228'IN A CONCRETE POST PROJECTING 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2801 ***********************************************************************
 JV2801  DESIGNATION -  332.29 NIH
 JV2801  PID         -  JV2801
 JV2801  STATE/COUNTY-  MD/MONTGOMERY
 JV2801  COUNTRY     -  US
 JV2801  USGS QUAD   -  KENSINGTON (2016)
 JV2801
 JV2801                         *CURRENT SURVEY CONTROL
 JV2801  ______________________________________________________________________
 JV2801* NAD 83(1986) POSITION- 39 00 04.     (N) 077 06 10.     (W)   SCALED
 JV2801* NAVD 88 ORTHO HEIGHT -   101.042 (meters)      331.50  (feet) ADJUSTED
 JV2801  ______________________________________________________________________
 JV2801  GEOID HEIGHT    -        -31.852 (meters)                     GEOID18
 JV2801  DYNAMIC HEIGHT  -        100.988 (meters)      331.32  (feet) COMP
 JV2801  MODELED GRAVITY -    980,091.1   (mgal)                       NAVD 88
 JV2801
 JV2801  VERT ORDER      -  FIRST     CLASS II
 JV2801
 JV2801.The horizontal coordinates were scaled from a map and have
 JV2801.an estimated accuracy of +/- 6 seconds.
 JV2801
 JV2801.The orthometric height was determined by differential leveling and
 JV2801.adjusted by the NATIONAL GEODETIC SURVEY
 JV2801.in June 1991.
 JV2801
 JV2801.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2801.GEOID18 height accuracy estimate available here.
 JV2801
 JV2801.Click photographs - Photos may exist for this station.
 JV2801
 JV2801.The dynamic height is computed by dividing the NAVD 88
 JV2801.geopotential number by the normal gravity value computed on the
 JV2801.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2801.degrees latitude (g = 980.6199 gals.).
 JV2801
 JV2801.The modeled gravity was interpolated from observed gravity values.
 JV2801
 JV2801;                    North         East    Units  Estimated Accuracy
 JV2801;SPC MD       -   148,140.      391,100.      MT  (+/- 180 meters Scaled)
 JV2801
 JV2801_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ179190(NAD 83)
 JV2801
 JV2801                          SUPERSEDED SURVEY CONTROL
 JV2801
 JV2801  NGVD 29 (11/26/84)  101.256  (m)          332.20   (f) ADJUSTED    1 2
 JV2801
 JV2801.Superseded values are not recommended for survey control.
 JV2801
 JV2801.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2801.See file dsdata.pdf to determine how the superseded data were derived.
 JV2801
 JV2801_MARKER: Z = SEE DESCRIPTION
 JV2801_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2801_SP_SET: BUILDING
 JV2801_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2801
 JV2801  HISTORY     - Date     Condition        Report By
 JV2801  HISTORY     - UNK      MONUMENTED       NIH
 JV2801  HISTORY     - 1958     GOOD             CGS
 JV2801  HISTORY     - 1979     GOOD             NGS
 JV2801
 JV2801                          STATION DESCRIPTION
 JV2801
 JV2801'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2801'IN BETHESDA.
 JV2801'332.29 (NIH) IS LOCATED ON THE TOP STEP OF THE WEST CONCRETE
 JV2801'PORCH ADJOINING THE NORTH WALL OF THE WEST CENTER WING OF
 JV2801'BUILDING 7, 80.5 FEET SOUTH OF NW CORNER OF BUILDING 7, 7.2 FEET
 JV2801'WEST OF WEST EXTERIOR BUILDING WALL, 14.8 FEET EAST OF NW CORNER
 JV2801'OF BUILDING 7 WEST CENTER WING, AND 0.2 INCHES NORTH OF NORTH
 JV2801'WALL OF BUILDING 7 WEST CENTER WING ON THE GROUNDS OF THE NATIONAL
 JV2801'INSTITUTES OF HEALTH. CHISELED L.
 JV2801
 JV2801                          STATION RECOVERY (1979)
 JV2801
 JV2801'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2801'332.29 (NIH) IS LOCATED ON THE TOP STEP OF THE WEST CONCRETE PORCH
 JV2801'ADJOINING THE NORTH WALL OF THE WEST CENTER WING OF BUILDING NO. 7,
 JV2801'80.5 FEET SOUTH OF NW CORNER OF BUILDING NO. 7, 7.2 FEET WEST OF WEST
 JV2801'EXTERIOR BUILDING WALL, 14.8 FEET EAST OF NW CORNER OF BUILDING NO. 7
 JV2801'WEST CENTER WING, AND 0.2 INCHES NORTH OF NORTH WALL OF BUILDING NO.
 JV2801'7 WEST CENTER WING ON THE GROUNDS OF THE NATIONAL INSTITUTES OF
 JV2801'HEALTH. MARK IS ALMOST INDISCERNABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2784 ***********************************************************************
 JV2784  DESIGNATION -  333 WSSC
 JV2784  PID         -  JV2784
 JV2784  STATE/COUNTY-  MD/MONTGOMERY
 JV2784  COUNTRY     -  US
 JV2784  USGS QUAD   -  KENSINGTON (2016)
 JV2784
 JV2784                         *CURRENT SURVEY CONTROL
 JV2784  ______________________________________________________________________
 JV2784* NAD 83(1986) POSITION- 39 00 38.     (N) 077 02 27.     (W)   SCALED
 JV2784* NAVD 88 ORTHO HEIGHT -   109.10  (+/-2cm)      357.9   (feet) VERTCON3
 JV2784  ______________________________________________________________________
 JV2784  GEOID HEIGHT    -        -31.940 (meters)                     GEOID18
 JV2784  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2784
 JV2784.The horizontal coordinates were scaled from a map and have
 JV2784.an estimated accuracy of +/- 6 seconds.
 JV2784
 JV2784.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2784.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2784
 JV2784.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2784.GEOID18 height accuracy estimate available here.
 JV2784
 JV2784.The vertical order pertains to the NGVD 29 superseded value.
 JV2784
 JV2784.Click photographs - Photos may exist for this station.
 JV2784
 JV2784;                    North         East    Units  Estimated Accuracy
 JV2784;SPC MD       -   149,180.      396,460.      MT  (+/- 180 meters Scaled)
 JV2784
 JV2784_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ232199(NAD 83)
 JV2784
 JV2784                          SUPERSEDED SURVEY CONTROL
 JV2784
 JV2784  NGVD 29 (11/26/84)  109.316  (m)          358.65   (f) ADJUSTED    2 0
 JV2784
 JV2784.Superseded values are not recommended for survey control.
 JV2784
 JV2784.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2784.See file dsdata.pdf to determine how the superseded data were derived.
 JV2784
 JV2784_MARKER: Q = CHISELED SQUARE
 JV2784_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2784_SP_SET: CULVERT
 JV2784_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2784
 JV2784  HISTORY     - Date     Condition        Report By
 JV2784  HISTORY     - UNK      MONUMENTED       WSSC
 JV2784  HISTORY     - 1939     GOOD             WSSC
 JV2784
 JV2784                          STATION DESCRIPTION
 JV2784
 JV2784'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2784'AT MONTGOMERY HILLS.
 JV2784'ON GEORGIA AVENUE, AT THE NORTHWEST CORNER OF THE JUNCTION OF A
 JV2784'ROAD LEADING WEST TO CARROLL SPRINGS AND CHEVY CHASE, AT A
 JV2784'CULVERT IN THE TRIANGLE, AND AT AN ANGLE IN THE CULVERT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8230 ***********************************************************************
 AJ8230  TIDAL BM    -  This is a Tidal Bench Mark.
 AJ8230  DESIGNATION -  33B1 1
 AJ8230  PID         -  AJ8230
 AJ8230  STATE/COUNTY-  MD/DORCHESTER
 AJ8230  COUNTRY     -  US
 AJ8230  USGS QUAD   -  BARREN ISLAND (2016)
 AJ8230
 AJ8230                         *CURRENT SURVEY CONTROL
 AJ8230  ______________________________________________________________________
 AJ8230* NAD 83(2011) POSITION- 38 20 11.99546(N) 076 15 43.02502(W)   NO CHECK
 AJ8230* NAD 83(2011) ELLIP HT-   -34.400 (meters)        (06/27/12)   NO CHECK
 AJ8230* NAD 83(2011) EPOCH   -  2010.00
 AJ8230* NAVD 88 ORTHO HEIGHT -     0.5   (meters)        2.    (feet) GPS OBS
 AJ8230  ______________________________________________________________________
 AJ8230  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8230  GEOID HEIGHT    -        -34.911 (meters)                     GEOID99
 AJ8230  GEOID HEIGHT    -        -34.977 (meters)                     GEOID18
 AJ8230  NAD 83(2011) X  -  1,189,627.063 (meters)                     COMP
 AJ8230  NAD 83(2011) Y  - -4,866,000.669 (meters)                     COMP
 AJ8230  NAD 83(2011) Z  -  3,934,802.629 (meters)                     COMP
 AJ8230  LAPLACE CORR    -         -6.79  (seconds)                    DEFLEC18
 AJ8230
 AJ8230  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8230  Standards:
 AJ8230         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8230            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8230  -------------------------------------------------------------------
 AJ8230  NETWORK    1.72   2.33           0.72   0.66   1.19      0.33722495
 AJ8230  -------------------------------------------------------------------
 AJ8230  Click here for local accuracies and other accuracy information.
 AJ8230
 AJ8230.The horizontal coordinates were established by GPS observations
 AJ8230.and adjusted by the National Geodetic Survey in June 2012.
 AJ8230
 AJ8230.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8230.been affixed to the stable North American tectonic plate. See 
 AJ8230.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8230
 AJ8230.The horizontal coordinates are valid at the epoch date displayed above
 AJ8230.which is a decimal equivalence of Year/Month/Day.
 AJ8230
 AJ8230.No horizontal observational check was made to the station.
 AJ8230
 AJ8230.The orthometric height was determined by GPS observations and a
 AJ8230.high-resolution geoid model.
 AJ8230
 AJ8230.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8230.GEOID18 height accuracy estimate available here.
 AJ8230
 AJ8230.This Tidal Bench Mark is designated as VM 16630
 AJ8230.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AJ8230
 AJ8230.Click photographs - Photos may exist for this station.
 AJ8230
 AJ8230.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8230
 AJ8230.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8230
 AJ8230.The ellipsoidal height was determined by GPS observations
 AJ8230.and is referenced to NAD 83.
 AJ8230
 AJ8230. The following values were computed from the NAD 83(2011) position.
 AJ8230
 AJ8230;                    North         East     Units Scale Factor Converg.
 AJ8230;SPC MD       -    74,633.635   464,526.048   MT  0.99999382   +0 27 47.6
 AJ8230;SPC MD       -   244,860.52  1,524,032.54   sFT  0.99999382   +0 27 47.6
 AJ8230;UTM  18      - 4,243,923.266   389,710.397   MT  0.99974980   -0 46 58.2
 AJ8230
 AJ8230!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8230!SPC MD       -   1.00000540  x   0.99999382  =   0.99999922
 AJ8230!UTM  18      -   1.00000540  x   0.99974980  =   0.99975520
 AJ8230
 AJ8230_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8971043923(NAD 83)
 AJ8230
 AJ8230|---------------------------------------------------------------------|
 AJ8230| PID    Reference Object                     Distance      Geod. Az  |
 AJ8230|                                                           dddmmss.s |
 AJ8230| AJ8227 857 1579 E TIDAL                    189.684 METERS 34958     |
 AJ8230|---------------------------------------------------------------------|
 AJ8230
 AJ8230                          SUPERSEDED SURVEY CONTROL
 AJ8230
 AJ8230  NAD 83(2007)-  38 20 11.99566(N)    076 15 43.02591(W) AD(2002.00) 0
 AJ8230  ELLIP H (02/10/07)  -34.381  (m)                       GP(2002.00)    
 AJ8230  ELLIP H (08/09/02)  -34.374  (m)                       GP(       ) 3 2
 AJ8230  NAD 83(1991)-  38 20 11.99548(N)    076 15 43.02590(W) AD(       ) A
 AJ8230  ELLIP H (03/12/02)  -34.374  (m)                       GP(       ) 4 2
 AJ8230
 AJ8230.Superseded values are not recommended for survey control.
 AJ8230
 AJ8230.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8230.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8230
 AJ8230_MARKER: Z = SEE DESCRIPTION
 AJ8230_SETTING: 0 = UNSPECIFIED SETTING
 AJ8230_STAMPING: COE BALTO
 AJ8230_MARK LOGO: NONE
 AJ8230_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8230_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AJ8230_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8230+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2005
 AJ8230
 AJ8230  HISTORY     - Date     Condition        Report By
 AJ8230  HISTORY     - UNK      MONUMENTED       USACE
 AJ8230  HISTORY     - 20011101 GOOD             NGS
 AJ8230  HISTORY     - 20040914 GOOD             NGS
 AJ8230  HISTORY     - 20050909 GOOD             USPSQD
 AJ8230
 AJ8230                          STATION DESCRIPTION
 AJ8230
 AJ8230'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (RWA)
 AJ8230'BARREN ISLAND IS APPROXIMATELY 22.0 MILES (35.4 KM) SOUTHWEST OF
 AJ8230'CAMBRIDGE, ABOUT A 10 MINUTE BOAT RIDE FROM FISHING CREEK AT A SMALL
 AJ8230'BOAT DOCK AT TYLER COVE. OWNERSHIP--FEDERAL LAND, OPEREATED BY THE
 AJ8230'U.S. FISH AND WILDLIFE DEPARTMENT. CONTACT--MR JOHN GILL WITH THE U.S.
 AJ8230'FISH AND WILDLIFE SERVICE AT 410 228 2692 EXT 118. TO REACH FROM THE
 AJ8230'BOAT DOCK NEAR HONGA, GO WEST-SOUTHWEST BY BOAT FOLLOWING A NARROW
 AJ8230'CHANNEL UNTIL THE BAY WATERS ARE ENTERED, CONTINUE WESTERLY UNTIL THE
 AJ8230'LAST BOUY LIGHT, THENCE MAKE A WIDE TURN SOUTH (SUNKEN OBSTRUCTIONS
 AJ8230'NEAR BARREN ISLAND) FOR APPROXIMATELY 0.8 MI (1.28 KM) PASSING
 AJ8230'NORTHWEST CORNER OF ISLAND, CONTINUE 0.2 MI (0.32 KM) SOUTH ALONG WEST
 AJ8230'SIDE OF ISLAND, THENCE TURN EAST AND PROCEED WITH CAUTION TO THE
 AJ8230'ISLAND.  ONCE ON THE ISLAND, GO SOUTHEASTERLY ALONG THE WEST BANK FOR
 AJ8230'0.2 MI (0.32 KM) FROM BM 3BB1 2, TO THE MARK AT THE SOUTH EDGE OF
 AJ8230'BANK, JUST NORTH OF WHERE THE ISLAND SPLITS DUE TO A SLOUGH,  ALSO 0.4
 AJ8230'MI (0.6 KM) SOUTH FROM THE NORTHWEST CORNER OF THE ISLAND FROM BM 3BB1
 AJ8230'3, ALSO 0.1 MI (0.16 KM) SOUTH OF 857 1579 E TIDAL, A REBAR WITH A
 AJ8230'YELLOW CAP.  2.3 FEET (0.7 M) WEST OF A FIBERGLASS CARSONITE WITNESS
 AJ8230'POST, 5.1 FEET (1.6 M) NORTHWEST OF A FIBERGLASS CARSONITE WITNESS
 AJ8230'POST.
 AJ8230
 AJ8230                          STATION RECOVERY (2004)
 AJ8230
 AJ8230'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2004 (DBC)
 AJ8230'RECOVERED AS DESCRIBED.
 AJ8230
 AJ8230                          STATION RECOVERY (2005)
 AJ8230
 AJ8230'RECOVERY NOTE BY US POWER SQUADRON 2005 (LGD)
 AJ8230'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8229 ***********************************************************************
 AJ8229  TIDAL BM    -  This is a Tidal Bench Mark.
 AJ8229  DESIGNATION -  33B1 2
 AJ8229  PID         -  AJ8229
 AJ8229  STATE/COUNTY-  MD/DORCHESTER
 AJ8229  COUNTRY     -  US
 AJ8229  USGS QUAD   -  BARREN ISLAND (2016)
 AJ8229
 AJ8229                         *CURRENT SURVEY CONTROL
 AJ8229  ______________________________________________________________________
 AJ8229* NAD 83(2011) POSITION- 38 20 19.28882(N) 076 15 49.32568(W)   ADJUSTED
 AJ8229* NAD 83(2011) ELLIP HT-   -34.391 (meters)        (06/27/12)   ADJUSTED
 AJ8229* NAD 83(2011) EPOCH   -  2010.00
 AJ8229* NAVD 88 ORTHO HEIGHT -     0.5   (meters)        2.    (feet) GPS OBS
 AJ8229  ______________________________________________________________________
 AJ8229  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8229  GEOID HEIGHT    -        -34.899 (meters)                     GEOID99
 AJ8229  GEOID HEIGHT    -        -34.965 (meters)                     GEOID18
 AJ8229  NAD 83(2011) X  -  1,189,445.301 (meters)                     COMP
 AJ8229  NAD 83(2011) Y  - -4,865,901.508 (meters)                     COMP
 AJ8229  NAD 83(2011) Z  -  3,934,979.026 (meters)                     COMP
 AJ8229  LAPLACE CORR    -         -6.82  (seconds)                    DEFLEC18
 AJ8229
 AJ8229  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8229  Standards:
 AJ8229         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8229            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8229  -------------------------------------------------------------------
 AJ8229  NETWORK    1.44   1.88           0.58   0.58   0.96      0.34808421
 AJ8229  -------------------------------------------------------------------
 AJ8229  Click here for local accuracies and other accuracy information.
 AJ8229
 AJ8229.The horizontal coordinates were established by GPS observations
 AJ8229.and adjusted by the National Geodetic Survey in June 2012.
 AJ8229
 AJ8229.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8229.been affixed to the stable North American tectonic plate. See 
 AJ8229.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8229
 AJ8229.The horizontal coordinates are valid at the epoch date displayed above
 AJ8229.which is a decimal equivalence of Year/Month/Day.
 AJ8229
 AJ8229.The orthometric height was determined by GPS observations and a
 AJ8229.high-resolution geoid model.
 AJ8229
 AJ8229.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8229.GEOID18 height accuracy estimate available here.
 AJ8229
 AJ8229.This Tidal Bench Mark is designated as VM 16631
 AJ8229.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AJ8229
 AJ8229.Click photographs - Photos may exist for this station.
 AJ8229
 AJ8229.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8229
 AJ8229.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8229
 AJ8229.The ellipsoidal height was determined by GPS observations
 AJ8229.and is referenced to NAD 83.
 AJ8229
 AJ8229. The following values were computed from the NAD 83(2011) position.
 AJ8229
 AJ8229;                    North         East     Units Scale Factor Converg.
 AJ8229;SPC MD       -    74,857.275   464,371.222   MT  0.99999349   +0 27 43.7
 AJ8229;SPC MD       -   245,594.24  1,523,524.58   sFT  0.99999349   +0 27 43.7
 AJ8229;UTM  18      - 4,244,150.165   389,560.509   MT  0.99975021   -0 47 02.3
 AJ8229
 AJ8229!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8229!SPC MD       -   1.00000540  x   0.99999349  =   0.99999889
 AJ8229!UTM  18      -   1.00000540  x   0.99975021  =   0.99975560
 AJ8229
 AJ8229_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8956044150(NAD 83)
 AJ8229
 AJ8229|---------------------------------------------------------------------|
 AJ8229| PID    Reference Object                     Distance      Geod. Az  |
 AJ8229|                                                           dddmmss.s |
 AJ8229| AJ8227 857 1579 E TIDAL                    125.872 METERS 10737     |
 AJ8229|---------------------------------------------------------------------|
 AJ8229
 AJ8229                          SUPERSEDED SURVEY CONTROL
 AJ8229
 AJ8229  NAD 83(2007)-  38 20 19.28902(N)    076 15 49.32657(W) AD(2002.00) 0
 AJ8229  ELLIP H (02/10/07)  -34.372  (m)                       GP(2002.00)    
 AJ8229  ELLIP H (08/09/02)  -34.366  (m)                       GP(       ) 3 2
 AJ8229  NAD 83(1991)-  38 20 19.28886(N)    076 15 49.32656(W) AD(       ) A
 AJ8229  ELLIP H (03/12/02)  -34.366  (m)                       GP(       ) 4 2
 AJ8229
 AJ8229.Superseded values are not recommended for survey control.
 AJ8229
 AJ8229.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8229.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8229
 AJ8229_MARKER: Z = SEE DESCRIPTION
 AJ8229_SETTING: 0 = UNSPECIFIED SETTING
 AJ8229_STAMPING: COE BALT
 AJ8229_MARK LOGO: NONE
 AJ8229_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8229_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AJ8229_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8229+SATELLITE: SATELLITE OBSERVATIONS - November 01, 2001
 AJ8229
 AJ8229  HISTORY     - Date     Condition        Report By
 AJ8229  HISTORY     - UNK      MONUMENTED       USACE
 AJ8229  HISTORY     - 20011101 GOOD             NGS
 AJ8229  HISTORY     - 20040914 GOOD             NGS
 AJ8229
 AJ8229                          STATION DESCRIPTION
 AJ8229
 AJ8229'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (RWA)
 AJ8229'BARREN ISLAND IS APPROXIMATELY 22.0 MILES (35.4 KM) SOUTHWEST OF
 AJ8229'CAMBRIDGE, ABOUT A 10 MINUTE BOAT RIDE FROM FISHING CREEK AT A SMALL
 AJ8229'BOAT DOCK AT TYLER COVE. OWNERSHIP--FEDERAL LAND, OPEREATED BY THE
 AJ8229'U.S. FISH AND WILDLIFE DEPARTMENT. CONTACT--MR JOHN GILL WITH THE U.S.
 AJ8229'FISH AND WILDLIFE SERVICE AT 410 228 2692 EXT 118. TO REACH FROM THE
 AJ8229'BOAT DOCK NEAR HONGA, GO WEST-SOUTHWEST BY BOAT FOLLOWING A NARROW
 AJ8229'CHANNEL UNTIL THE BAY WATERS ARE ENTERED, CONTINUE WESTERLY UNTIL THE
 AJ8229'LAST BOUY LIGHT, THENCE MAKE A WIDE TURN SOUTH (SUNKEN OBSTRUCTIONS
 AJ8229'NEAR BARREN ISLAND) FOR APPROXIMATELY 0.8 MI (1.28 KM) PASSING
 AJ8229'NORTHWEST CORNER OF ISLAND, CONTINUE 0.2 MI (0.32 KM) SOUTH ALONG WEST
 AJ8229'SIDE OF ISLAND, THENCE TURN EAST AND PROCEED WITH CAUTION TO THE
 AJ8229'ISLAND.  ONCE ON THE ISLAND THE MARK SHOULD BE NEAR THE BOAT LANDING
 AJ8229'AREA, ALSO 0.1 MI (0.16 KM) SOUTH OF 857 1579 D, AND 0.1 (0.16 KM)
 AJ8229'NORTHWEST OF 857 1579 E,  A REBAR ROD WITH A YELLOW CAP ATTACHED TO
 AJ8229'IT.  2.4 FEET (0.7 M) WEST-SOUTHWEST OF A FIBERGLASS CARSONITE WITNESS
 AJ8229'POST, 46.2 FEET (14.1 M) NORTHEAST OF WEST EDGE OF BANK, 2.3 FEET (0.7
 AJ8229'M) NORTHEAST OF A FIBERGLASS CARSONITE WITNESS POST. MARK 11 CM ABOVE
 AJ8229'GROUND.
 AJ8229
 AJ8229                          STATION RECOVERY (2004)
 AJ8229
 AJ8229'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2004 (DBC)
 AJ8229'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8231 ***********************************************************************
 AJ8231  TIDAL BM    -  This is a Tidal Bench Mark.
 AJ8231  DESIGNATION -  33B1 3
 AJ8231  PID         -  AJ8231
 AJ8231  STATE/COUNTY-  MD/DORCHESTER
 AJ8231  COUNTRY     -  US
 AJ8231  USGS QUAD   -  BARREN ISLAND (2016)
 AJ8231
 AJ8231                         *CURRENT SURVEY CONTROL
 AJ8231  ______________________________________________________________________
 AJ8231* NAD 83(2011) POSITION- 38 20 26.25194(N) 076 15 54.67141(W)   NO CHECK
 AJ8231* NAD 83(2011) ELLIP HT-   -34.062 (meters)        (06/27/12)   NO CHECK
 AJ8231* NAD 83(2011) EPOCH   -  2010.00
 AJ8231* NAVD 88 ORTHO HEIGHT -     0.9   (meters)        3.    (feet) GPS OBS
 AJ8231  ______________________________________________________________________
 AJ8231  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8231  GEOID HEIGHT    -        -34.889 (meters)                     GEOID99
 AJ8231  GEOID HEIGHT    -        -34.955 (meters)                     GEOID18
 AJ8231  NAD 83(2011) X  -  1,189,287.632 (meters)                     COMP
 AJ8231  NAD 83(2011) Y  - -4,865,803.209 (meters)                     COMP
 AJ8231  NAD 83(2011) Z  -  3,935,147.630 (meters)                     COMP
 AJ8231  LAPLACE CORR    -         -6.84  (seconds)                    DEFLEC18
 AJ8231
 AJ8231  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8231  Standards:
 AJ8231         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8231            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8231  -------------------------------------------------------------------
 AJ8231  NETWORK   46.61  12.98          10.55  22.57   6.62     -0.51523512
 AJ8231  -------------------------------------------------------------------
 AJ8231  Click here for local accuracies and other accuracy information.
 AJ8231
 AJ8231.The horizontal coordinates were established by GPS observations
 AJ8231.and adjusted by the National Geodetic Survey in June 2012.
 AJ8231
 AJ8231.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8231.been affixed to the stable North American tectonic plate. See 
 AJ8231.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8231
 AJ8231.The horizontal coordinates are valid at the epoch date displayed above
 AJ8231.which is a decimal equivalence of Year/Month/Day.
 AJ8231
 AJ8231.No horizontal observational check was made to the station.
 AJ8231
 AJ8231.The orthometric height was determined by GPS observations and a
 AJ8231.high-resolution geoid model.
 AJ8231
 AJ8231.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8231.GEOID18 height accuracy estimate available here.
 AJ8231
 AJ8231.This Tidal Bench Mark is designated as VM 16632
 AJ8231.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AJ8231
 AJ8231.Click photographs - Photos may exist for this station.
 AJ8231
 AJ8231.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8231
 AJ8231.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8231
 AJ8231.The ellipsoidal height was determined by GPS observations
 AJ8231.and is referenced to NAD 83.
 AJ8231
 AJ8231. The following values were computed from the NAD 83(2011) position.
 AJ8231
 AJ8231;                    North         East     Units Scale Factor Converg.
 AJ8231;SPC MD       -    75,070.923   464,239.677   MT  0.99999318   +0 27 40.3
 AJ8231;SPC MD       -   246,295.19  1,523,093.01   sFT  0.99999318   +0 27 40.3
 AJ8231;UTM  18      - 4,244,366.570   389,433.671   MT  0.99975055   -0 47 05.7
 AJ8231
 AJ8231!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8231!SPC MD       -   1.00000534  x   0.99999318  =   0.99999852
 AJ8231!UTM  18      -   1.00000534  x   0.99975055  =   0.99975589
 AJ8231
 AJ8231_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8943344366(NAD 83)
 AJ8231
 AJ8231|---------------------------------------------------------------------|
 AJ8231| PID    Reference Object                     Distance      Geod. Az  |
 AJ8231|                                                           dddmmss.s |
 AJ8231| AJ8227 857 1579 E TIDAL                    355.391 METERS 13521     |
 AJ8231|---------------------------------------------------------------------|
 AJ8231
 AJ8231                          SUPERSEDED SURVEY CONTROL
 AJ8231
 AJ8231  NAD 83(2007)-  38 20 26.25215(N)    076 15 54.67229(W) AD(2002.00) 0
 AJ8231  ELLIP H (02/10/07)  -34.043  (m)                       GP(2002.00)    
 AJ8231  ELLIP H (08/09/02)  -34.037  (m)                       GP(       ) 3 2
 AJ8231  NAD 83(1991)-  38 20 26.25199(N)    076 15 54.67227(W) AD(       ) A
 AJ8231  ELLIP H (03/12/02)  -34.037  (m)                       GP(       ) 4 2
 AJ8231
 AJ8231.Superseded values are not recommended for survey control.
 AJ8231
 AJ8231.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8231.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8231
 AJ8231_MARKER: Z = SEE DESCRIPTION
 AJ8231_SETTING: 0 = UNSPECIFIED SETTING
 AJ8231_STAMPING: COE BALT
 AJ8231_MARK LOGO: NONE
 AJ8231_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8231_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AJ8231_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8231+SATELLITE: SATELLITE OBSERVATIONS - November 01, 2001
 AJ8231
 AJ8231  HISTORY     - Date     Condition        Report By
 AJ8231  HISTORY     - UNK      MONUMENTED       USACE
 AJ8231  HISTORY     - 20011101 GOOD             NGS
 AJ8231  HISTORY     - 20040913 GOOD             NGS
 AJ8231
 AJ8231                          STATION DESCRIPTION
 AJ8231
 AJ8231'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (RWA)
 AJ8231'BARREN ISLAND IS APPROXIMATELY 22.0 MILES (35.4 KM) SOUTHWEST OF
 AJ8231'CAMBRIDGE, ABOUT A 10 MINUTE BOAT RIDE FROM FISHING CREEK AT A SMALL
 AJ8231'BOAT DOCK AT TYLER COVE. OWNERSHIP--FEDERAL LAND, OPEREATED BY THE
 AJ8231'U.S. FISH AND WILDLIFE DEPARTMENT. CONTACT--MR JOHN GILL WITH THE U.S.
 AJ8231'FISH AND WILDLIFE SERVICE AT 410 228 2692 EXT 118. TO REACH FROM THE
 AJ8231'BOAT DOCK NEAR HONGA, GO WEST-SOUTHWEST BY BOAT FOLLOWING A NARROW
 AJ8231'CHANNEL UNTIL THE BAY WATERS ARE ENTERED, CONTINUE WESTERLY UNTIL THE
 AJ8231'LAST BOUY LIGHT, THENCE MAKE A WIDE TURN SOUTH (SUNKEN OBSTRUCTIONS
 AJ8231'NEAR BARREN ISLAND) FOR APPROXIMATELY 0.8 MI (1.28 KM) PASSING
 AJ8231'NORTHWEST CORNER OF ISLAND, CONTINUE 0.2 MI (0.32 KM) SOUTH ALONG WEST
 AJ8231'SIDE OF ISLAND, THENCE TURN EAST AND PROCEED WITH CAUTION TO THE
 AJ8231'ISLAND.  ONCE ON ISLAND GO NORTH ALONG BEACH ON THE WEST SIDE OF
 AJ8231'ISLAND FOR 0.2 MILE (0.32 KM) TO THE MARK AT THE NORTHWEST CORNER OF
 AJ8231'ISLAND, A REBAR WITH A YELLOW PLASTIC CAP OVER TOP. DEPTH OF REBAR IS
 AJ8231'UNKNOWN, ALSO 0.1 MI (0.16 KM) NORTHWEST OF 857 1579 TIDAL D, AND 0.1
 AJ8231'MI (0.16 KM) WEST OF 857 1579 A, 18.5 FEET (5.6 M) EAST OF FIBERGLASS
 AJ8231'CARSONITE WITNESS POST, 39.8 FEET (12.1 M) SOUTH OF EDGE OF BANK FOR
 AJ8231'BARREN ISLAND, 11 INCHES NORTHWEST OF A FIBERGLASS CARSONITE WITNESS
 AJ8231'POST, 91.0 FEET (27.7 M) NORTHWEST OF A LONE LARGE PINE TREE.  MARK IS
 AJ8231'5 INCHES ABOVE GROUND.
 AJ8231
 AJ8231                          STATION RECOVERY (2004)
 AJ8231
 AJ8231'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2004 (DBC)
 AJ8231'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2619 ***********************************************************************
 JV2619  DESIGNATION -  34
 JV2619  PID         -  JV2619
 JV2619  STATE/COUNTY-  MD/MONTGOMERY
 JV2619  COUNTRY     -  US
 JV2619  USGS QUAD   -  KENSINGTON (2016)
 JV2619
 JV2619                         *CURRENT SURVEY CONTROL
 JV2619  ______________________________________________________________________
 JV2619* NAD 83(1986) POSITION- 39 06 31.54   (N) 077 04 46.84   (W)   HD_HELD1
 JV2619* NAVD 88 ORTHO HEIGHT -   153.03  (+/-2cm)      502.1   (feet) VERTCON3
 JV2619  ______________________________________________________________________
 JV2619  GEOID HEIGHT    -        -31.810 (meters)                     GEOID18
 JV2619  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2619
 JV2619.The horizontal coordinates were determined by differentially corrected
 JV2619.hand held GPS observations or other comparable positioning techniques
 JV2619.and have an estimated accuracy of +/- 3 meters.
 JV2619
 JV2619.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2619.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2619
 JV2619.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2619.GEOID18 height accuracy estimate available here.
 JV2619
 JV2619.The vertical order pertains to the NGVD 29 superseded value.
 JV2619
 JV2619.Click photographs - Photos may exist for this station.
 JV2619
 JV2619;                    North         East    Units  Estimated Accuracy
 JV2619;SPC MD       -   160,083.0     393,108.7     MT  (+/- 3 meters HH1 GPS) 
 JV2619
 JV2619_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2018430905(NAD 83)
 JV2619
 JV2619                          SUPERSEDED SURVEY CONTROL
 JV2619
 JV2619  NGVD 29 (11/26/84)  153.246  (m)          502.77   (f) ADJUSTED    2 0
 JV2619
 JV2619.Superseded values are not recommended for survey control.
 JV2619
 JV2619.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2619.See file dsdata.pdf to determine how the superseded data were derived.
 JV2619
 JV2619_MARKER: DD = SURVEY DISK
 JV2619_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2619_MARK LOGO: CGS+SS
 JV2619_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2619+STABILITY: SURFACE MOTION
 JV2619
 JV2619  HISTORY     - Date     Condition        Report By
 JV2619  HISTORY     - 1934     MONUMENTED       MDGS
 JV2619  HISTORY     - 1967     GOOD             MDSRC
 JV2619  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2619
 JV2619                          STATION DESCRIPTION
 JV2619
 JV2619'DESCRIBED BY MD STATE ROADS COMM 1967
 JV2619'0.4 MI SW FROM NORBECK.
 JV2619'ABOUT 1000 FT. WEST OF GEORGIA AVE. (STATE HIGHWAY 97), AT THE
 JV2619'JUNCTION OF THE ROCKVILLE-NORBECK ROAD, AND A ROAD LEADING NORTHEAST
 JV2619'TO GAITHERSBURG, ON THE SOUTH SIDE OF THE ROAD 36.7 FT. SOUTH OF
 JV2619'TELEPHONE POLE 19M, 20.1 FT. NORTHEAST OF P.E.P. CO. POLE 75802,
 JV2619'AND 17.4 FT. WEST OF A 15 IN CHERRY TREE.
 JV2619
 JV2619                          STATION RECOVERY (1995)
 JV2619
 JV2619'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2619'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7034 ***********************************************************************
 JV7034  DESIGNATION -  34 39 001
 JV7034  PID         -  JV7034
 JV7034  STATE/COUNTY-  MD/HOWARD
 JV7034  COUNTRY     -  US
 JV7034  USGS QUAD   -  SYKESVILLE (2016)
 JV7034
 JV7034                         *CURRENT SURVEY CONTROL
 JV7034  ______________________________________________________________________
 JV7034* NAD 83(2011) POSITION- 39 18 16.18610(N) 076 53 57.03260(W)   ADJUSTED
 JV7034* NAD 83(2011) ELLIP HT-   116.124 (meters)        (06/27/12)   ADJUSTED
 JV7034* NAD 83(2011) EPOCH   -  2010.00
 JV7034* NAVD 88 ORTHO HEIGHT -   148.180 (meters)      486.15  (feet) ADJUSTED
 JV7034  ______________________________________________________________________
 JV7034  GEOID HEIGHT    -        -32.044 (meters)                     GEOID18
 JV7034  NAD 83(2011) X  -  1,120,196.672 (meters)                     COMP
 JV7034  NAD 83(2011) Y  - -4,813,444.719 (meters)                     COMP
 JV7034  NAD 83(2011) Z  -  4,018,605.090 (meters)                     COMP
 JV7034  LAPLACE CORR    -         -3.44  (seconds)                    DEFLEC18
 JV7034  DYNAMIC HEIGHT  -        148.102 (meters)      485.90  (feet) COMP
 JV7034  MODELED GRAVITY -    980,097.0   (mgal)                       NAVD 88
 JV7034
 JV7034  VERT ORDER      -  SECOND    CLASS I
 JV7034
 JV7034  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7034  Standards:
 JV7034         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7034            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7034  -------------------------------------------------------------------
 JV7034  NETWORK    1.11   1.31           0.51   0.38   0.67      0.01169823
 JV7034  -------------------------------------------------------------------
 JV7034  Click here for local accuracies and other accuracy information.
 JV7034
 JV7034.The horizontal coordinates were established by GPS observations
 JV7034.and adjusted by the National Geodetic Survey in June 2012.
 JV7034
 JV7034.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7034.been affixed to the stable North American tectonic plate. See 
 JV7034.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7034
 JV7034.The horizontal coordinates are valid at the epoch date displayed above
 JV7034.which is a decimal equivalence of Year/Month/Day.
 JV7034
 JV7034.The orthometric height was determined by differential leveling and
 JV7034.adjusted by the NATIONAL GEODETIC SURVEY
 JV7034.in March 2010.
 JV7034
 JV7034.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7034.GEOID18 height accuracy estimate available here.
 JV7034
 JV7034.Click photographs - Photos may exist for this station.
 JV7034
 JV7034.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7034
 JV7034.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7034
 JV7034.The ellipsoidal height was determined by GPS observations
 JV7034.and is referenced to NAD 83.
 JV7034
 JV7034.The dynamic height is computed by dividing the NAVD 88
 JV7034.geopotential number by the normal gravity value computed on the
 JV7034.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7034.degrees latitude (g = 980.6199 gals.).
 JV7034
 JV7034.The modeled gravity was interpolated from observed gravity values.
 JV7034
 JV7034. The following values were computed from the NAD 83(2011) position.
 JV7034
 JV7034;                    North         East     Units Scale Factor Converg.
 JV7034;SPC MD       -   181,814.418   408,696.291   MT  0.99997778   +0 03 47.8
 JV7034;SPC MD       -   596,502.80  1,340,864.41   sFT  0.99997778   +0 03 47.8
 JV7034;UTM  18      - 4,352,287.196   336,248.247   MT  0.99993017   -1 12 11.8
 JV7034
 JV7034!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7034!SPC MD       -   0.99998178  x   0.99997778  =   0.99995956
 JV7034!UTM  18      -   0.99998178  x   0.99993017  =   0.99991195
 JV7034
 JV7034_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3624852287(NAD 83)
 JV7034
 JV7034                          SUPERSEDED SURVEY CONTROL
 JV7034
 JV7034  NAD 83(2007)-  39 18 16.18624(N)    076 53 57.03334(W) AD(2002.00) 0
 JV7034  ELLIP H (02/10/07)  116.157  (m)                       GP(2002.00)    
 JV7034  ELLIP H (08/30/02)  116.162  (m)                       GP(       ) 4 2
 JV7034  NAD 83(1991)-  39 18 16.18569(N)    076 53 57.03322(W) AD(       ) 1
 JV7034  ELLIP H (02/23/93)  116.090  (m)                       GP(       ) 4 2
 JV7034  NAVD 88 (11/16/00)  148.2    (m)  GEOID99  model used  GPS OBS        
 JV7034  NGVD 29 (02/23/93)  148.4    (m)  GEOID90  model used  GPS OBS        
 JV7034
 JV7034.Superseded values are not recommended for survey control.
 JV7034
 JV7034.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7034.See file dsdata.pdf to determine how the superseded data were derived.
 JV7034
 JV7034_MARKER: DD = SURVEY DISK
 JV7034_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7034_STAMPING: 3439001 0012 1971
 JV7034_MARK LOGO: MD-027
 JV7034_PROJECTION: RECESSED 10 CENTIMETERS
 JV7034_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7034_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7034+STABILITY: SURFACE MOTION
 JV7034_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7034+SATELLITE: SATELLITE OBSERVATIONS - June 09, 2017
 JV7034
 JV7034  HISTORY     - Date     Condition        Report By
 JV7034  HISTORY     - 1971     MONUMENTED       MD-027
 JV7034  HISTORY     - 19901125 GOOD             MD-027
 JV7034  HISTORY     - 19910214 GOOD
 JV7034  HISTORY     - 20000915 GOOD             MD-027
 JV7034  HISTORY     - 20020907 GOOD             WR
 JV7034  HISTORY     - 20091230 GOOD             MDSHA
 JV7034  HISTORY     - 20170609 GOOD             NGS
 JV7034
 JV7034                          STATION DESCRIPTION
 JV7034
 JV7034'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7034'THE STATION IS LOCATED ABOUT 3.8 KM (2.35 MI) SOUTHWEST OF WOODSTOCK,
 JV7034'AND 4.5 KM (2.80 MI) EAST OF WEST FRIENDSHIP. OWNERSHIP--STATE
 JV7034'HIGHWAY RIGHT-OF-WAY.
 JV7034'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE 70 AND STATE
 JV7034'HIGHWAY 29, GO WEST FOR 4.5 MI (7.2 KM) ON STATE ON INTERSTATE 70 TO
 JV7034'EXIT TO MARRIOTTSVILLE ROAD NORTH. GO 0.1 MI (0.2 KM) NORTH ON
 JV7034'MARRIOTTSVILLE ROAD TO FIRST CROSSOVER, MAKE A U TURN AND GO 0.15 MI
 JV7034'(0.24 KM) SOUTH ON MARRIOTTSVILLE ROAD TO THE STATION ON THE RIGHT,
 JV7034'NEAR THE NORTHWEST ABUTMENT OF THE BRIDGE OVER INTERSTATE 70.
 JV7034'THE STATION LIES 8.8 M (28.9 FT) WEST FROM THE CENTERLINE OF THE
 JV7034'SOUTHBOUND LANE OF MARRIOTTSVILLEROAD, 0.3 M (1.0 FT) SOUTH FROM A
 JV7034'HOWARD COUNTY WITNESS POST , 2.0 M (6.6 FT) WEST FROM THE NORTHWEST
 JV7034'CORNER OF THE WEST CONCRETE ABUTMENT WINGWALL OF THE BRIDGE AND 17.1
 JV7034'M (56.1 FT) SOUTHEAST FROM A BALTIMORE GAS AND ELECRIC POLE NUMBER
 JV7034'460154
 JV7034'THE STATION IS A STANDARD HCGS DISC THE GROUND, STAMPED 3439001 1971,
 JV7034'IT IS SET ON TOP OF A ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND.
 JV7034'NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE INCLUDED
 JV7034'IN THIS PROJECT.
 JV7034
 JV7034                          STATION RECOVERY (1991)
 JV7034
 JV7034'RECOVERED 1991
 JV7034'RECOVERED IN GOOD CONDITION.
 JV7034
 JV7034                          STATION RECOVERY (2000)
 JV7034
 JV7034'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7034'RECOVERY BY HOWARD COUNTY , 2000 RECOVERED IN GOOD CONDITION AS
 JV7034'DESCRIBED
 JV7034'
 JV7034
 JV7034                          STATION RECOVERY (2002)
 JV7034
 JV7034'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (JFU)
 JV7034'RECOVERED IN GOOD CONDITION.
 JV7034
 JV7034                          STATION RECOVERY (2009)
 JV7034
 JV7034'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (DCS)
 JV7034'RECOVERED AS DESCRIBED.  THE STAMPING HAS BEEN ALTERED.  THE NUMBERS
 JV7034'3439001 HAVE BEEN SLASHED THROUGH WITH A PUNCH AND THE NUMBERS 0012
 JV7034'HAVE BEEN ADDED BELOW THEM IN AN ATTEMPT TO RENAME THE MARK.
 JV7034
 JV7034                          STATION RECOVERY (2017)
 JV7034
 JV7034'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (LHB)
 JV7034'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1537 ***********************************************************************
 JV1537  DESIGNATION -  34 PRR
 JV1537  PID         -  JV1537
 JV1537  STATE/COUNTY-  MD/BALTIMORE
 JV1537  COUNTRY     -  US
 JV1537  USGS QUAD   -  NEW FREEDOM (2019)
 JV1537
 JV1537                         *CURRENT SURVEY CONTROL
 JV1537  ______________________________________________________________________
 JV1537* NAD 83(1986) POSITION- 39 41 06.     (N) 076 40 09.     (W)   SCALED
 JV1537* NAVD 88 ORTHO HEIGHT -   168.235 (meters)      551.95  (feet) ADJUSTED
 JV1537  ______________________________________________________________________
 JV1537  GEOID HEIGHT    -        -32.313 (meters)                     GEOID18
 JV1537  DYNAMIC HEIGHT  -        168.151 (meters)      551.68  (feet) COMP
 JV1537  MODELED GRAVITY -    980,128.2   (mgal)                       NAVD 88
 JV1537
 JV1537  VERT ORDER      -  SECOND    CLASS 0
 JV1537
 JV1537.The horizontal coordinates were scaled from a map and have
 JV1537.an estimated accuracy of +/- 6 seconds.
 JV1537
 JV1537.The orthometric height was determined by differential leveling and
 JV1537.adjusted by the NATIONAL GEODETIC SURVEY
 JV1537.in June 1991.
 JV1537
 JV1537.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1537.GEOID18 height accuracy estimate available here.
 JV1537
 JV1537.Click photographs - Photos may exist for this station.
 JV1537
 JV1537.The dynamic height is computed by dividing the NAVD 88
 JV1537.geopotential number by the normal gravity value computed on the
 JV1537.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1537.degrees latitude (g = 980.6199 gals.).
 JV1537
 JV1537.The modeled gravity was interpolated from observed gravity values.
 JV1537
 JV1537;                    North         East    Units  Estimated Accuracy
 JV1537;SPC MD       -   224,110.      428,380.      MT  (+/- 180 meters Scaled)
 JV1537
 JV1537_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ568941(NAD 83)
 JV1537
 JV1537                          SUPERSEDED SURVEY CONTROL
 JV1537
 JV1537  NGVD 29 (11/26/84)  168.453  (m)          552.67   (f) ADJUSTED    2 0
 JV1537
 JV1537.Superseded values are not recommended for survey control.
 JV1537
 JV1537.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1537.See file dsdata.pdf to determine how the superseded data were derived.
 JV1537
 JV1537_MARKER: B = BOLT
 JV1537_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1537_SP_SET: BRIDGE
 JV1537_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1537
 JV1537  HISTORY     - Date     Condition        Report By
 JV1537  HISTORY     - UNK      MONUMENTED       PRR
 JV1537  HISTORY     - 1942     GOOD             CGS
 JV1537  HISTORY     - 20070420 MARK NOT FOUND   MD-005
 JV1537
 JV1537                          STATION DESCRIPTION
 JV1537
 JV1537'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1537'2.4 MI N FROM WALKER.
 JV1537'2.4 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE FORMER
 JV1537'STATION AT WALKER, BALTIMORE COUNTY, AT BRIDGE 32.38 OVER TURNER
 JV1537'CREEK, IN THE TOP OF THE WEST WING OF THE NORTH ABUTMENT, AND 12
 JV1537'FEET WEST OF THE CENTERLINE OF THE TRACK.  A COPPER BOLT.
 JV1537
 JV1537                          STATION RECOVERY (2007)
 JV1537
 JV1537'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 JV1537'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9586 ***********************************************************************
 HV9586  DESIGNATION -  3480
 HV9586  PID         -  HV9586
 HV9586  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9586  COUNTRY     -  US
 HV9586  USGS QUAD   -  BOWIE (2016)
 HV9586
 HV9586                         *CURRENT SURVEY CONTROL
 HV9586  ______________________________________________________________________
 HV9586* NAD 83(1986) POSITION- 38 59 04.77   (N) 076 43 09.64   (W)   HD_HELD1
 HV9586* NAVD 88 ORTHO HEIGHT -    28.420 (meters)       93.24  (feet) ADJUSTED
 HV9586  ______________________________________________________________________
 HV9586  GEOID HEIGHT    -        -32.731 (meters)                     GEOID18
 HV9586  DYNAMIC HEIGHT  -         28.404 (meters)       93.19  (feet) COMP
 HV9586  MODELED GRAVITY -    980,083.0   (mgal)                       NAVD 88
 HV9586
 HV9586  VERT ORDER      -  SECOND    CLASS I
 HV9586
 HV9586.The horizontal coordinates were determined by differentially corrected
 HV9586.hand held GPS observations or other comparable positioning techniques
 HV9586.and have an estimated accuracy of +/- 3 meters.
 HV9586
 HV9586.The orthometric height was determined by differential leveling and
 HV9586.adjusted by the NATIONAL GEODETIC SURVEY
 HV9586.in September 1993.
 HV9586
 HV9586.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9586.GEOID18 height accuracy estimate available here.
 HV9586
 HV9586.Click photographs - Photos may exist for this station.
 HV9586
 HV9586.The dynamic height is computed by dividing the NAVD 88
 HV9586.geopotential number by the normal gravity value computed on the
 HV9586.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9586.degrees latitude (g = 980.6199 gals.).
 HV9586
 HV9586.The modeled gravity was interpolated from observed gravity values.
 HV9586
 HV9586;                    North         East    Units  Estimated Accuracy
 HV9586;SPC MD       -   146,340.5     424,316.2     MT  (+/- 3 meters HH1 GPS) 
 HV9586
 HV9586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5108216480(NAD 83)
 HV9586
 HV9586                          SUPERSEDED SURVEY CONTROL
 HV9586
 HV9586  NGVD 29 (09/17/93)   28.658  (m)           94.02   (f) ADJUSTED    2 1
 HV9586
 HV9586.Superseded values are not recommended for survey control.
 HV9586
 HV9586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9586.See file dsdata.pdf to determine how the superseded data were derived.
 HV9586
 HV9586_MARKER: B = BOLT
 HV9586_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV9586_SP_SET: CULVERT HEADWALL
 HV9586_STAMPING: BM NO 3480
 HV9586_MARK LOGO: WSSC
 HV9586_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV9586_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9586+STABILITY: SURFACE MOTION
 HV9586_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV9586+SATELLITE: SATELLITE OBSERVATIONS - May 01, 2008
 HV9586
 HV9586  HISTORY     - Date     Condition        Report By
 HV9586  HISTORY     - UNK      MONUMENTED       WSSC
 HV9586  HISTORY     - 19930818 GOOD             NGS
 HV9586  HISTORY     - 20020123 GOOD             USPSQD
 HV9586  HISTORY     - 20030604 GOOD             URS
 HV9586  HISTORY     - 20080501 GOOD             GEOCAC
 HV9586
 HV9586                          STATION DESCRIPTION
 HV9586
 HV9586'DESCRIBED BY NATIONAL GEODETIC SURVEY 1993
 HV9586'0.55 MILES (0.89 KM) WEST ALONG HIGHWAY 450 FROM THE INTERSECTION OF
 HV9586'HIGHWAYS 3 AND 450, AT A SIDE ROAD LEFT TO THE SACRED HEART CHAPEL, A
 HV9586'METAL BOLT WITH WASHER IN THE CENTER, AND HIGHEST PART OF THE CULVERT
 HV9586'HEADWALL, 14 METER (45.9 FT) EAST OF A METAL POST HOLDING THE SIGN
 HV9586'FOR SACRED HEART CHAPEL - WHITE MARSH, AND 10 METER (32.8 FT) WEST OF
 HV9586'POWER POLE 374634.  NOTE--STAMPING IS ON THE WASHER AROUND BOLT.
 HV9586
 HV9586                          STATION RECOVERY (2002)
 HV9586
 HV9586'RECOVERY NOTE BY US POWER SQUADRON 2002 (WAY)
 HV9586'RECOVERED IN GOOD CONDITION.
 HV9586
 HV9586                          STATION RECOVERY (2003)
 HV9586
 HV9586'RECOVERY NOTE BY URS COMPANY 2003 (JP)
 HV9586'RECOVERED IN GOOD CONDITION.
 HV9586
 HV9586                          STATION RECOVERY (2008)
 HV9586
 HV9586'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 HV9586'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8505 ***********************************************************************
 AI8505  DESIGNATION -  34AA
 AI8505  PID         -  AI8505
 AI8505  STATE/COUNTY-  MD/HOWARD
 AI8505  COUNTRY     -  US
 AI8505  USGS QUAD   -  CLARKSVILLE (2016)
 AI8505
 AI8505                         *CURRENT SURVEY CONTROL
 AI8505  ______________________________________________________________________
 AI8505* NAD 83(2011) POSITION- 39 12 59.71674(N) 076 58 44.72742(W)   ADJUSTED
 AI8505* NAD 83(2011) ELLIP HT-   138.846 (meters)        (06/27/12)   ADJUSTED
 AI8505* NAD 83(2011) EPOCH   -  2010.00
 AI8505* NAVD 88 ORTHO HEIGHT -   170.8   (meters)      560.    (feet) GPS OBS
 AI8505  ______________________________________________________________________
 AI8505  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8505  GEOID HEIGHT    -        -31.928 (meters)                     GEOID99
 AI8505  GEOID HEIGHT    -        -31.952 (meters)                     GEOID18
 AI8505  NAD 83(2011) X  -  1,114,877.432 (meters)                     COMP
 AI8505  NAD 83(2011) Y  - -4,821,037.266 (meters)                     COMP
 AI8505  NAD 83(2011) Z  -  4,011,062.690 (meters)                     COMP
 AI8505  LAPLACE CORR    -         -3.23  (seconds)                    DEFLEC18
 AI8505
 AI8505  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8505  Standards:
 AI8505         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8505            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8505  -------------------------------------------------------------------
 AI8505  NETWORK    1.30   1.39           0.57   0.48   0.71     -0.22073443
 AI8505  -------------------------------------------------------------------
 AI8505  Click here for local accuracies and other accuracy information.
 AI8505
 AI8505.The horizontal coordinates were established by GPS observations
 AI8505.and adjusted by the National Geodetic Survey in June 2012.
 AI8505
 AI8505.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8505.been affixed to the stable North American tectonic plate. See 
 AI8505.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8505
 AI8505.The horizontal coordinates are valid at the epoch date displayed above
 AI8505.which is a decimal equivalence of Year/Month/Day.
 AI8505
 AI8505.The orthometric height was determined by GPS observations and a
 AI8505.high-resolution geoid model.
 AI8505
 AI8505.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8505.GEOID18 height accuracy estimate available here.
 AI8505
 AI8505.Click photographs - Photos may exist for this station.
 AI8505
 AI8505.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8505
 AI8505.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8505
 AI8505.The ellipsoidal height was determined by GPS observations
 AI8505.and is referenced to NAD 83.
 AI8505
 AI8505. The following values were computed from the NAD 83(2011) position.
 AI8505
 AI8505;                    North         East     Units Scale Factor Converg.
 AI8505;SPC MD       -   172,050.488   401,805.682   MT  0.99996749   +0 00 47.2
 AI8505;SPC MD       -   564,468.98  1,318,257.48   sFT  0.99996749   +0 00 47.2
 AI8505;UTM  18      - 4,342,678.115   329,143.850   MT  0.99995944   -1 15 05.7
 AI8505
 AI8505!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8505!SPC MD       -   0.99997822  x   0.99996749  =   0.99994571
 AI8505!UTM  18      -   0.99997822  x   0.99995944  =   0.99993766
 AI8505
 AI8505_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2914342678(NAD 83)
 AI8505
 AI8505                          SUPERSEDED SURVEY CONTROL
 AI8505
 AI8505  NAD 83(2007)-  39 12 59.71668(N)    076 58 44.72823(W) AD(2002.00) 0
 AI8505  ELLIP H (02/10/07)  138.876  (m)                       GP(2002.00)    
 AI8505  ELLIP H (08/30/02)  138.873  (m)                       GP(       ) 4 2
 AI8505  NAD 83(1991)-  39 12 59.71647(N)    076 58 44.72811(W) AD(       ) 1
 AI8505  ELLIP H (11/16/00)  138.776  (m)                       GP(       ) 4 1
 AI8505
 AI8505.Superseded values are not recommended for survey control.
 AI8505
 AI8505.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8505.See file dsdata.pdf to determine how the superseded data were derived.
 AI8505
 AI8505_MARKER: DD = SURVEY DISK
 AI8505_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8505_STAMPING: 34AA
 AI8505_MARK LOGO: MD-027
 AI8505_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8505_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8505+STABILITY: SURFACE MOTION
 AI8505_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8505+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8505
 AI8505  HISTORY     - Date     Condition        Report By
 AI8505  HISTORY     - 1999     MONUMENTED       MD-027
 AI8505  HISTORY     - 20000915 GOOD             MD-027
 AI8505
 AI8505                          STATION DESCRIPTION
 AI8505
 AI8505'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8505'DESCRIPTION BY HOWARD COUNTY 2000    THE STATION IS LOCATED  1.7
 AI8505'MILES SSE OF DAYTON,  3 MILES NE OF  BRIGHTON AND 2.2 MILES WNW OF
 AI8505'CLARKSVILLE    TO REACH THE STATION FROM THE  POST OFFICE AT DAYTON
 AI8505'GO 1.32  MILES SOUTHEAST ALONG TEN OAKS ROAD TO THE
 AI8505'INTERSECTION     WITH  HIGHLAND ROAD, CONTINUE O.5 MILES SOUTH
 AI8505'ALONG HIGHLAND     ROAD TO  TRIADELPHIA MILL ROAD, TURN RIGHT (WEST)
 AI8505'ON TRIADELPHIA     MILL ROAD  AND GO 0.1 MILES TO THE MARK ON THE
 AI8505'LEFT (SOUTH) SIDE OF     THE ROAD.   THE STATION IS ON THE GROUNDS OF
 AI8505'THE PROPERTY NUMBER     13471  TRIADELPHIA MILL ROAD, ACROSS THE
 AI8505'STREET FROM HOUSE     NUMBER  13470,  7.4 FEET FROM THE SOUTH EDGE
 AI8505'OF THE STREET     PAVEMENT, 57.2  FEET EAST OF POLE C AND P 32 AND 22
 AI8505'FEET TO A STAUNCH     POST FROM A GAS  PIPELINE RIGHT OF WAY.   THE
 AI8505'STATION IS A STANDARD     HOWARD COUNTY SURVEY DISC SET ON A
 AI8505'CONCRETE BASE,FLUSH WITH     THE GROUND.
 AI8505'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8504 ***********************************************************************
 AI8504  DESIGNATION -  34BB
 AI8504  PID         -  AI8504
 AI8504  STATE/COUNTY-  MD/HOWARD
 AI8504  COUNTRY     -  US
 AI8504  USGS QUAD   -  CLARKSVILLE (2016)
 AI8504
 AI8504                         *CURRENT SURVEY CONTROL
 AI8504  ______________________________________________________________________
 AI8504* NAD 83(2011) POSITION- 39 12 37.00731(N) 076 56 20.09547(W)   ADJUSTED
 AI8504* NAD 83(2011) ELLIP HT-   115.645 (meters)        (06/27/12)   ADJUSTED
 AI8504* NAD 83(2011) EPOCH   -  2010.00
 AI8504* NAVD 88 ORTHO HEIGHT -   147.7   (meters)      485.    (feet) GPS OBS
 AI8504  ______________________________________________________________________
 AI8504  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8504  GEOID HEIGHT    -        -32.005 (meters)                     GEOID99
 AI8504  GEOID HEIGHT    -        -32.029 (meters)                     GEOID18
 AI8504  NAD 83(2011) X  -  1,118,353.646 (meters)                     COMP
 AI8504  NAD 83(2011) Y  - -4,820,668.134 (meters)                     COMP
 AI8504  NAD 83(2011) Z  -  4,010,505.397 (meters)                     COMP
 AI8504  LAPLACE CORR    -         -3.55  (seconds)                    DEFLEC18
 AI8504
 AI8504  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8504  Standards:
 AI8504         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8504            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8504  -------------------------------------------------------------------
 AI8504  NETWORK    1.27   1.47           0.55   0.48   0.75     -0.23180361
 AI8504  -------------------------------------------------------------------
 AI8504  Click here for local accuracies and other accuracy information.
 AI8504
 AI8504.The horizontal coordinates were established by GPS observations
 AI8504.and adjusted by the National Geodetic Survey in June 2012.
 AI8504
 AI8504.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8504.been affixed to the stable North American tectonic plate. See 
 AI8504.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8504
 AI8504.The horizontal coordinates are valid at the epoch date displayed above
 AI8504.which is a decimal equivalence of Year/Month/Day.
 AI8504
 AI8504.The orthometric height was determined by GPS observations and a
 AI8504.high-resolution geoid model.
 AI8504
 AI8504.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8504.GEOID18 height accuracy estimate available here.
 AI8504
 AI8504.Click photographs - Photos may exist for this station.
 AI8504
 AI8504.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8504
 AI8504.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8504
 AI8504.The ellipsoidal height was determined by GPS observations
 AI8504.and is referenced to NAD 83.
 AI8504
 AI8504. The following values were computed from the NAD 83(2011) position.
 AI8504
 AI8504;                    North         East     Units Scale Factor Converg.
 AI8504;SPC MD       -   171,351.738   405,275.665   MT  0.99996685   +0 02 18.0
 AI8504;SPC MD       -   562,176.49  1,329,641.91   sFT  0.99996685   +0 02 18.0
 AI8504;UTM  18      - 4,341,902.970   332,597.516   MT  0.99994506   -1 13 33.6
 AI8504
 AI8504!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8504!SPC MD       -   0.99998186  x   0.99996685  =   0.99994871
 AI8504!UTM  18      -   0.99998186  x   0.99994506  =   0.99992692
 AI8504
 AI8504_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3259741902(NAD 83)
 AI8504
 AI8504                          SUPERSEDED SURVEY CONTROL
 AI8504
 AI8504  NAD 83(2007)-  39 12 37.00724(N)    076 56 20.09630(W) AD(2002.00) 0
 AI8504  ELLIP H (02/10/07)  115.676  (m)                       GP(2002.00)    
 AI8504  ELLIP H (08/30/02)  115.673  (m)                       GP(       ) 4 2
 AI8504  NAD 83(1991)-  39 12 37.00712(N)    076 56 20.09602(W) AD(       ) 1
 AI8504  ELLIP H (11/16/00)  115.578  (m)                       GP(       ) 4 1
 AI8504
 AI8504.Superseded values are not recommended for survey control.
 AI8504
 AI8504.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8504.See file dsdata.pdf to determine how the superseded data were derived.
 AI8504
 AI8504_MARKER: DD = SURVEY DISK
 AI8504_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8504_STAMPING: 34BB
 AI8504_MARK LOGO: MD-027
 AI8504_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8504_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8504+STABILITY: SURFACE MOTION
 AI8504_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8504+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8504
 AI8504  HISTORY     - Date     Condition        Report By
 AI8504  HISTORY     - 1997     MONUMENTED       MD-027
 AI8504  HISTORY     - 20000915 GOOD             MD-027
 AI8504  HISTORY     - 20061001 GOOD             GEOCAC
 AI8504
 AI8504                          STATION DESCRIPTION
 AI8504
 AI8504'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8504'DESCRIPTION BY HOWARD COUNTY 2000    THE STATION IS AT CLARKSVILLE
 AI8504'ON THE EAST SIDE OF STATE HIGHWAY  108 ABOUT 0.2 MILES NORT OF THE
 AI8504'NORTH END OF THE BRIDGE OVER STATE  HIGHWAY 32.     THE STATION IS
 AI8504'NEAR THE SOUTH CORNER OF THE INTERSECTION OF  ROUTE 108 WITH
 AI8504'GREAT STAR DRIVE, IN FRONT OF A MOBILE GAS  STATION, 1.3 FEET  TO
 AI8504'THE
 AI8504'EAST FACE OF CURB OF  ROUTE 108, 112 FEET NORTH  OF POLE BG AND E
 AI8504'532720,    15.2 FEET SOUTH EAST OF THE PC OF THE CORNER  AT  GREAT
 AI8504'STAR DRIVE.       THE STATION IS A STANDARD HOWARD COUNTY DISC ON A
 AI8504'CONCRETE    BASE, FLUSH WITH THE GROUND.
 AI8504'
 AI8504
 AI8504                          STATION RECOVERY (2006)
 AI8504
 AI8504'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 AI8504'FORMER MOBIL STATION IS NOW A SUNOCO STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7035 ***********************************************************************
 JV7035  DESIGNATION -  35 29 002 RESET
 JV7035  PID         -  JV7035
 JV7035  STATE/COUNTY-  MD/HOWARD
 JV7035  COUNTRY     -  US
 JV7035  USGS QUAD   -  WOODBINE (2016)
 JV7035
 JV7035                         *CURRENT SURVEY CONTROL
 JV7035  ______________________________________________________________________
 JV7035* NAD 83(2011) POSITION- 39 18 35.45318(N) 077 06 29.09322(W)   ADJUSTED
 JV7035* NAD 83(2011) ELLIP HT-   154.659 (meters)        (06/27/12)   ADJUSTED
 JV7035* NAD 83(2011) EPOCH   -  2010.00
 JV7035* NAVD 88 ORTHO HEIGHT -   186.5   (meters)      612.    (feet) GPS OBS
 JV7035  ______________________________________________________________________
 JV7035  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7035  GEOID HEIGHT    -        -31.820 (meters)                     GEOID99
 JV7035  GEOID HEIGHT    -        -31.831 (meters)                     GEOID18
 JV7035  NAD 83(2011) X  -  1,102,561.670 (meters)                     COMP
 JV7035  NAD 83(2011) Y  - -4,817,159.200 (meters)                     COMP
 JV7035  NAD 83(2011) Z  -  4,019,089.266 (meters)                     COMP
 JV7035  LAPLACE CORR    -         -0.33  (seconds)                    DEFLEC18
 JV7035
 JV7035  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7035  Standards:
 JV7035         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7035            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7035  -------------------------------------------------------------------
 JV7035  NETWORK    1.36   1.59           0.60   0.50   0.81     -0.15350037
 JV7035  -------------------------------------------------------------------
 JV7035  Click here for local accuracies and other accuracy information.
 JV7035
 JV7035.The horizontal coordinates were established by GPS observations
 JV7035.and adjusted by the National Geodetic Survey in June 2012.
 JV7035
 JV7035.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7035.been affixed to the stable North American tectonic plate. See 
 JV7035.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7035
 JV7035.The horizontal coordinates are valid at the epoch date displayed above
 JV7035.which is a decimal equivalence of Year/Month/Day.
 JV7035
 JV7035.The orthometric height was determined by GPS observations and a
 JV7035.high-resolution geoid model.
 JV7035
 JV7035.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7035.GEOID18 height accuracy estimate available here.
 JV7035
 JV7035.Click photographs - Photos may exist for this station.
 JV7035
 JV7035.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7035
 JV7035.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7035
 JV7035.The ellipsoidal height was determined by GPS observations
 JV7035.and is referenced to NAD 83.
 JV7035
 JV7035. The following values were computed from the NAD 83(2011) position.
 JV7035
 JV7035;                    North         East     Units Scale Factor Converg.
 JV7035;SPC MD       -   182,409.303   390,678.468   MT  0.99997849   -0 04 04.2
 JV7035;SPC MD       -   598,454.52  1,281,750.94   sFT  0.99997849   -0 04 04.2
 JV7035;UTM  18      - 4,353,280.419   318,248.174   MT  1.00000674   -1 20 09.1
 JV7035
 JV7035!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7035!SPC MD       -   0.99997574  x   0.99997849  =   0.99995423
 JV7035!UTM  18      -   0.99997574  x   1.00000674  =   0.99998248
 JV7035
 JV7035_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1824853280(NAD 83)
 JV7035
 JV7035                          SUPERSEDED SURVEY CONTROL
 JV7035
 JV7035  NAD 83(2007)-  39 18 35.45340(N)    077 06 29.09380(W) AD(2002.00) 0
 JV7035  ELLIP H (02/10/07)  154.689  (m)                       GP(2002.00)    
 JV7035  ELLIP H (08/30/02)  154.689  (m)                       GP(       ) 4 2
 JV7035  NAD 83(1991)-  39 18 35.45333(N)    077 06 29.09388(W) AD(       ) 1
 JV7035  ELLIP H (02/23/93)  154.577  (m)                       GP(       ) 4 2
 JV7035  NGVD 29 (02/23/93)  186.7    (m)  GEOID90  model used  GPS OBS        
 JV7035
 JV7035.Superseded values are not recommended for survey control.
 JV7035
 JV7035.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7035.See file dsdata.pdf to determine how the superseded data were derived.
 JV7035
 JV7035_MARKER: DD = SURVEY DISK
 JV7035_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7035_STAMPING: 3529002 1981 RESET 1987
 JV7035_MARK LOGO: MD-027
 JV7035_PROJECTION: FLUSH
 JV7035_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7035_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7035+STABILITY: SURFACE MOTION
 JV7035_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7035+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7035
 JV7035  HISTORY     - Date     Condition        Report By
 JV7035  HISTORY     - 1987     MONUMENTED       MD-027
 JV7035  HISTORY     - 19901125 GOOD             MD-027
 JV7035  HISTORY     - 19910925 GOOD
 JV7035  HISTORY     - 20000915 GOOD             MD-027
 JV7035
 JV7035                          STATION DESCRIPTION
 JV7035
 JV7035'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7035'THE STATION IS LOCATED ABOUT 5.58 MI (8.98 KM) NORTHEAST OF DAMASCUS,
 JV7035'5. MI (8.0 KM) SOUTHWEST OF COOKSVILLE AND 2.8 MI (4.5 KM) SOUTH OF
 JV7035'LISBON.
 JV7035'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE 70 AND STATE
 JV7035'HIGHWAY 94 , GO  3. MI (4.8 KM) SOUTH ON HIGHWAY 94 TO INTERSECTION
 JV7035'WITH FLORENCE ROAD, TURN LEFT ON FLORENCE ROAD AND GO 282. FT
 JV7035'(86.0 M) TO THE STATION ON THE RIGT SIDE OF THE ROAD.
 JV7035'THE STATION LIES 122. FT (37.2 M) SOUTHWEST FROM A POTOMAC EDISON POLE
 JV7035'NUMBER 6970, 189.4 FT (57.7 M) NORTHWEST FROM A POTOMAC EDISON POLE
 JV7035'NUMBER 6971, 26.3 FT (8.0 M) SOUTHWEST FROM THE CENTERLINE OF
 JV7035'FLORENCE ROAD AND 1. FT (0.3 M) FROM A HOWARD COUNTY WITNESS POST.
 JV7035'THE STATION IS A STANDARD HOWARD COUNTY SURVEY CONTROL DISC, ON TOP OF
 JV7035'A ROUND CONCRETE MONUMENT ABOUT .75 FR IN DIAMETER, THE DISC IS
 JV7035'RECESSED 0.1 FT (0.0 M) BELOW GROUND.  THE DISC IS STAMPED HOWARD
 JV7035'COUNTY CONTROL 3529002 RESET 1987.
 JV7035'OWNERSHIP -- COUNTY ROAD RIGHT-OF-WAY
 JV7035'COMMENT--NO AZIMUTH MARKS OR REFERENCE MARK STATIONS FOR THIS STATION
 JV7035'WERE INCLUDED IN THIS GPS PROJECT.
 JV7035
 JV7035                          STATION RECOVERY (1991)
 JV7035
 JV7035'RECOVERED 1991
 JV7035'RECOVERED IN GOOD CONDITION.
 JV7035
 JV7035                          STATION RECOVERY (2000)
 JV7035
 JV7035'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7035'REPORT BY HOWARD COUNTY 2000 FOUND AS DESCRIBED IN GOOD
 JV7035'CONDITION
 JV7035'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7036 ***********************************************************************
 JV7036  DESIGNATION -  35 41 004 R
 JV7036  PID         -  JV7036
 JV7036  STATE/COUNTY-  MD/HOWARD
 JV7036  COUNTRY     -  US
 JV7036  USGS QUAD   -  ELLICOTT CITY (2016)
 JV7036
 JV7036                         *CURRENT SURVEY CONTROL
 JV7036  ______________________________________________________________________
 JV7036* NAD 83(2011) POSITION- 39 18 50.93627(N) 076 50 28.31654(W)   ADJUSTED
 JV7036* NAD 83(2011) ELLIP HT-    97.772 (meters)        (06/27/12)   ADJUSTED
 JV7036* NAD 83(2011) EPOCH   -  2010.00
 JV7036* NAVD 88 ORTHO HEIGHT -   129.9   (meters)      426.    (feet) GPS OBS
 JV7036  ______________________________________________________________________
 JV7036  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7036  GEOID HEIGHT    -        -32.126 (meters)                     GEOID99
 JV7036  GEOID HEIGHT    -        -32.135 (meters)                     GEOID18
 JV7036  NAD 83(2011) X  -  1,124,908.956 (meters)                     COMP
 JV7036  NAD 83(2011) Y  - -4,811,633.824 (meters)                     COMP
 JV7036  NAD 83(2011) Z  -  4,019,422.669 (meters)                     COMP
 JV7036  LAPLACE CORR    -         -2.91  (seconds)                    DEFLEC18
 JV7036
 JV7036  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7036  Standards:
 JV7036         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7036            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7036  -------------------------------------------------------------------
 JV7036  NETWORK    1.13   1.39           0.50   0.42   0.71      0.02038311
 JV7036  -------------------------------------------------------------------
 JV7036  Click here for local accuracies and other accuracy information.
 JV7036
 JV7036.The horizontal coordinates were established by GPS observations
 JV7036.and adjusted by the National Geodetic Survey in June 2012.
 JV7036
 JV7036.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7036.been affixed to the stable North American tectonic plate. See 
 JV7036.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7036
 JV7036.The horizontal coordinates are valid at the epoch date displayed above
 JV7036.which is a decimal equivalence of Year/Month/Day.
 JV7036
 JV7036.The orthometric height was determined by GPS observations and a
 JV7036.high-resolution geoid model.
 JV7036
 JV7036.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7036.GEOID18 height accuracy estimate available here.
 JV7036
 JV7036.Click photographs - Photos may exist for this station.
 JV7036
 JV7036.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7036
 JV7036.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7036
 JV7036.The ellipsoidal height was determined by GPS observations
 JV7036.and is referenced to NAD 83.
 JV7036
 JV7036. The following values were computed from the NAD 83(2011) position.
 JV7036
 JV7036;                    North         East     Units Scale Factor Converg.
 JV7036;SPC MD       -   182,893.174   413,695.025   MT  0.99997906   +0 05 58.8
 JV7036;SPC MD       -   600,042.02  1,357,264.43   sFT  0.99997906   +0 05 58.8
 JV7036;UTM  18      - 4,353,255.146   341,269.310   MT  0.99991023   -1 10 00.4
 JV7036
 JV7036!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7036!SPC MD       -   0.99998466  x   0.99997906  =   0.99996372
 JV7036!UTM  18      -   0.99998466  x   0.99991023  =   0.99989489
 JV7036
 JV7036_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4126953255(NAD 83)
 JV7036
 JV7036                          SUPERSEDED SURVEY CONTROL
 JV7036
 JV7036  NAD 83(2007)-  39 18 50.93644(N)    076 50 28.31721(W) AD(2002.00) 0
 JV7036  ELLIP H (02/10/07)   97.797  (m)                       GP(2002.00)    
 JV7036  ELLIP H (08/30/02)   97.800  (m)                       GP(       ) 4 2
 JV7036  NAD 83(1991)-  39 18 50.93574(N)    076 50 28.31706(W) AD(       ) 1
 JV7036  ELLIP H (02/23/93)   97.736  (m)                       GP(       ) 4 2
 JV7036  NGVD 29 (02/23/93)  130.1    (m)  GEOID90  model used  GPS OBS        
 JV7036
 JV7036.Superseded values are not recommended for survey control.
 JV7036
 JV7036.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7036.See file dsdata.pdf to determine how the superseded data were derived.
 JV7036
 JV7036_MARKER: DD = SURVEY DISK
 JV7036_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7036_STAMPING: 3541004-R 1991
 JV7036_MARK LOGO: MD-027
 JV7036_PROJECTION: RECESSED 30 CENTIMETERS
 JV7036_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 JV7036_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7036+STABILITY: SURFACE MOTION
 JV7036_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7036+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7036
 JV7036  HISTORY     - Date     Condition        Report By
 JV7036  HISTORY     - 1991     MONUMENTED       MD-027
 JV7036  HISTORY     - 20000915 GOOD             MD-027
 JV7036
 JV7036                          STATION DESCRIPTION
 JV7036
 JV7036'DESCRIBED BY HOWARD COUNTY MARYLAND 1991
 JV7036'THE STATION IS LOCATED 13.0 MI (20.9 KM) WEST OF BALTIMORE CITY, 7.0
 JV7036'MI (11.3 KM) NORTH OF THE CITY OF COLUMBIA, AND 3.2 MI (5.1 KM)
 JV7036'NORTHWEST OF THE CITY OF ELLICOTT CITY.
 JV7036'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 29 AND US
 JV7036'ROUTE 70, GO 0.35 MI (0.56 KM) NORTH ON ROUTE 29 TO INTERSECTION WITH
 JV7036'STATE ROUTE 99, TURN WEST ON ROUTE 99 FOR 0.25 MI (0.40 KM) TO THE
 JV7036'INTERSECTION WITH MOUNT HEBRON DRIVE, GO NORTH 0.05 MI (0.08 KM) ON
 JV7036'MOUNT HEBRON DRIVE TO INTERSECTION WITH FURROW AVENUE, GO WEST 0.6 MI
 JV7036'(1.0 KM) ON FURROW AVENUE TO INTERSECTION WITH CARRIE WAY, GO
 JV7036'NORTHWEST 0.2 MI (0.3 KM) ON CARRIE WAY TO INTERSECTION WITH
 JV7036'THORNBROOK WAY, GO NORTHEAST 0.25 MI (0.40 KM) ALONG THORNBROOK WAY
 JV7036'TO END OF PAVING THEN CONTINUE ON DIRT ROAD FOR 0.3 MI (0.5 KM) TO
 JV7036'STATION ON A GAS AND ELECTRIC POWER COMPANY TRANSMISSION LINE RIGHT
 JV7036'OF WAY.
 JV7036'THE STATION LIES ON A HILLTOP IN THE AFOREMENTIONED RIGHT OF WAY. IT
 JV7036'IS 70.5 FT (21.5 M) NORTHEAST OF THE SOUTHWEST LEG, 59.1 FT (18.0 M)
 JV7036'EAST FROM THE NORTHEAST LEG, AND 87.4 FT (26.6 M) EAST OF THE
 JV7036'NORTHWEST LEG OF TRANSMISSION TOWER NUMBER 252A.
 JV7036'THE STATION IS A STANDARD HOWARD COUNTY SURVEY CONTROL DISC, ON TOP OF
 JV7036'A ROUND CONCRETE MONUMENT ABOUT .75 FR IN DIAMETER, THE DISC IS FLUSH
 JV7036'WITH GROUND.  THE DISC IS STAMPED HOWARD COUNTY CONTROL 3541004-R
 JV7036'1991.
 JV7036'OWNERSHIP --GAS AND ELECTRIC POWER COMPANY RIGHT OF WAY.
 JV7036'COMMENT--NO AZIMUTH MARKS OR REFERENCE MARK STATIONS FOR THIS STATION
 JV7036'WERE INCLUDED IN THIS GPS PROJECT.
 JV7036
 JV7036                          STATION RECOVERY (2000)
 JV7036
 JV7036'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7036'NEW DESCRIPTION BY HOWARD COUNTY 2000    RECOVERED IN GOOD
 JV7036'CONDITION AT THE NORTH INTERSECTION OF GREEN  HAVEN COURT AND
 JV7036'TRANSMISSION LINE.   TO REACH THE STATION FROM THE INTERSECTION OF
 JV7036'MARYLAND STATE  HIGHWAY 29 AND MARYLAND STATE HIGHWAY 99  GO
 JV7036'WEST 2 MILES ALONG  STATE HIGHWAY 99  TO MCKENZIE ROAD ,  TURN
 JV7036'RIGHT (NORTH) ON  MCKENZIE ROAD AND GO 0.85 MILES  TO ITS END AT A
 JV7036'TEE WITH TWINBROOK   ROAD , TURN LEFT (NORTH) ON TWINBROOK ROAD
 JV7036'AND GO 0.35 MILES TO  INTERSECTION WITH GREENHAVEN COURT
 JV7036'CONTINUE STRAIGHT ON  GREENHAVEN COURT  FOR 0.35 MILES UNTIL THE
 JV7036'STREET CROSSES A  SECOND TIME A  TRANSMISSION LANE RIGHT OF WAY.
 JV7036'THE MARK IS ON TOP  OF A  SLOPE ON THE   SOUTH SIDE OF THE STREET,
 JV7036'ON THE EAST SIDE OF  THE CLEARING FOR THE TRANSMISSION LINE,  WEST
 JV7036'OF HOUSE NUMBER  3059 GREENHAVEN COURT. IT IS 33.8 FEET  SOUTH OF
 JV7036'THE SOUTH FACE OF  CURB, 31 FEET TO THE SOUTH WEST CORNER OF A
 JV7036'STORM DRAIN INLET, 58.3  FEET NORTH EAST OF  THE NORTHEAST CORNER
 JV7036'OF TRANSMISSION TOWER  NUMBER 252 AND 74  FEET NORTHEAST OF THE
 JV7036'SOUTHEAST CORNER OF  SAID TOWER.     THE STATION IS A STANDARD
 JV7036'HOWARD COUNTY SURVEY DISC SET ON A  CONCRETE BASE,  DEPRESSED
 JV7036'ABOUT 12 BELOW SURFACE GROUND.
 JV7036'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0609 ***********************************************************************
 JV0609  DESIGNATION -  35 BORR
 JV0609  PID         -  JV0609
 JV0609  STATE/COUNTY-  MD/BALTIMORE
 JV0609  COUNTRY     -  US
 JV0609  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0609
 JV0609                         *CURRENT SURVEY CONTROL
 JV0609  ______________________________________________________________________
 JV0609* NAD 83(1986) POSITION- 39 15 10.     (N) 076 39 50.     (W)   SCALED
 JV0609* NAVD 88 ORTHO HEIGHT -    24.269 (meters)       79.62  (feet) ADJUSTED
 JV0609  ______________________________________________________________________
 JV0609  GEOID HEIGHT    -        -32.632 (meters)                     GEOID18
 JV0609  DYNAMIC HEIGHT  -         24.256 (meters)       79.58  (feet) COMP
 JV0609  MODELED GRAVITY -    980,102.1   (mgal)                       NAVD 88
 JV0609
 JV0609  VERT ORDER      -  FIRST     CLASS II
 JV0609
 JV0609.The horizontal coordinates were scaled from a map and have
 JV0609.an estimated accuracy of +/- 6 seconds.
 JV0609
 JV0609.The orthometric height was determined by differential leveling and
 JV0609.adjusted by the NATIONAL GEODETIC SURVEY
 JV0609.in June 1991.
 JV0609
 JV0609.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0609.GEOID18 height accuracy estimate available here.
 JV0609
 JV0609.Click photographs - Photos may exist for this station.
 JV0609
 JV0609.The dynamic height is computed by dividing the NAVD 88
 JV0609.geopotential number by the normal gravity value computed on the
 JV0609.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0609.degrees latitude (g = 980.6199 gals.).
 JV0609
 JV0609.The modeled gravity was interpolated from observed gravity values.
 JV0609
 JV0609;                    North         East    Units  Estimated Accuracy
 JV0609;SPC MD       -   176,120.      429,010.      MT  (+/- 180 meters Scaled)
 JV0609
 JV0609_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ564461(NAD 83)
 JV0609
 JV0609                          SUPERSEDED SURVEY CONTROL
 JV0609
 JV0609  NGVD 29 (11/26/84)   24.491  (m)           80.35   (f) ADJUSTED    1 2
 JV0609
 JV0609.Superseded values are not recommended for survey control.
 JV0609
 JV0609.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0609.See file dsdata.pdf to determine how the superseded data were derived.
 JV0609
 JV0609_MARKER: Z = SEE DESCRIPTION
 JV0609_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0609_SP_SET: BRIDGE WALL
 JV0609_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0609
 JV0609  HISTORY     - Date     Condition        Report By
 JV0609  HISTORY     - 1903     MONUMENTED       BORR
 JV0609  HISTORY     - 1933     GOOD             CGS
 JV0609  HISTORY     - 20030923 MARK NOT FOUND   USPSQD
 JV0609
 JV0609                          STATION DESCRIPTION
 JV0609
 JV0609'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 JV0609'3.5 MI S FROM BALTIMORE.
 JV0609'IN BALTIMORE COUNTY, 3.5 MILES SOUTH ALONG THE BALTIMORE AND OHIO
 JV0609'RAILROAD FROM BALTIMORE, 0.5 MILE NORTH OF THE STATION AT LANDSDOWNE,
 JV0609'AT THE HAMMONDS FERRY HIGHWAY BRIDGE OVER THE TRACKS, 25 FEET
 JV0609'EAST OF THE SOUTH END OF THE WEST ABUTMENT, IN THE TOP OF THE
 JV0609'WEST RETAINING WALL, 15 FEET SOUTH OF POLE 3-48, AND 15 FEET
 JV0609'WEST OF THE WEST RAIL OF THE SOUTH-BOUND MAIN TRACK.  A COPPER PLUG.
 JV0609
 JV0609                          STATION RECOVERY (2003)
 JV0609
 JV0609'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0609'NOT FOUND.  THE BRIDGE WAS REBUILT IN 1981.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6148 ***********************************************************************
 JV6148  DESIGNATION -  3596
 JV6148  PID         -  JV6148
 JV6148  STATE/COUNTY-  MD/MONTGOMERY
 JV6148  COUNTRY     -  US
 JV6148  USGS QUAD   -  GERMANTOWN (2016)
 JV6148
 JV6148                         *CURRENT SURVEY CONTROL
 JV6148  ______________________________________________________________________
 JV6148* NAD 83(1986) POSITION- 39 09 20.49   (N) 077 15 43.45   (W)   HD_HELD1
 JV6148* NAVD 88 ORTHO HEIGHT -    94.718 (meters)      310.75  (feet) ADJUSTED
 JV6148  ______________________________________________________________________
 JV6148  GEOID HEIGHT    -        -31.811 (meters)                     GEOID18
 JV6148  DYNAMIC HEIGHT  -         94.668 (meters)      310.59  (feet) COMP
 JV6148  MODELED GRAVITY -    980,099.9   (mgal)                       NAVD 88
 JV6148
 JV6148  VERT ORDER      -  FIRST     CLASS I
 JV6148
 JV6148.The horizontal coordinates were determined by differentially corrected
 JV6148.hand held GPS observations or other comparable positioning techniques
 JV6148.and have an estimated accuracy of +/- 3 meters.
 JV6148
 JV6148.The orthometric height was determined by differential leveling and
 JV6148.adjusted by the NATIONAL GEODETIC SURVEY
 JV6148.in June 1991.
 JV6148
 JV6148.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6148.GEOID18 height accuracy estimate available here.
 JV6148
 JV6148.Click photographs - Photos may exist for this station.
 JV6148
 JV6148.The dynamic height is computed by dividing the NAVD 88
 JV6148.geopotential number by the normal gravity value computed on the
 JV6148.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6148.degrees latitude (g = 980.6199 gals.).
 JV6148
 JV6148.The modeled gravity was interpolated from observed gravity values.
 JV6148
 JV6148;                    North         East    Units  Estimated Accuracy
 JV6148;SPC MD       -   165,322.4     377,348.6     MT  (+/- 3 meters HH1 GPS) 
 JV6148
 JV6148_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0454336491(NAD 83)
 JV6148
 JV6148                          SUPERSEDED SURVEY CONTROL
 JV6148
 JV6148.No superseded survey control is available for this station.
 JV6148
 JV6148_MARKER: DD = SURVEY DISK
 JV6148_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6148_SP_SET: HEADWALL
 JV6148_STAMPING: 3596
 JV6148_MARK LOGO: WSSC
 JV6148_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6148_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6148+STABILITY: SURFACE MOTION
 JV6148_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6148+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2018
 JV6148
 JV6148  HISTORY     - Date     Condition        Report By
 JV6148  HISTORY     - UNK      MONUMENTED       WSSC
 JV6148  HISTORY     - 19891017 GOOD             NGS
 JV6148  HISTORY     - 19911113 GOOD             NGS
 JV6148  HISTORY     - 20031121 GOOD             GEOCAC
 JV6148  HISTORY     - 20101002 GOOD             GEOCAC
 JV6148  HISTORY     - 20180728 GOOD             BASE9
 JV6148
 JV6148                          STATION DESCRIPTION
 JV6148
 JV6148'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6148'2.05 KM (1.27 MI) SOUTHEAST ALONG STATE ROUTE 117 FROM THE
 JV6148'INTERSECTION OF STATE ROUTE 118 IN OLD GERMANTOWN TO THE MARK ON THE
 JV6148'LEFT, SET IN THE NORTH END OF THE EAST HEADWALL OF A DOUBLE BOX
 JV6148'CULVERT, 5.2 M (17 FT) EAST OF THE CENTERLINE OF THE HIGHWAY, 0.2 M
 JV6148'(0.6 FT) SOUTH OF THE NORTH END OF THE HEADWALL, 0.22 M (0.75 FT)
 JV6148'NORTH OF THE EAST GRARD RAIL ON THE HEADWALL, AND ABOUT 0.5 M (1.5
 JV6148'FT) ABOVE THE HIGHWAY.
 JV6148
 JV6148                          STATION RECOVERY (1991)
 JV6148
 JV6148'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV6148'RECOVERED IN GOOD CONDITION.
 JV6148
 JV6148                          STATION RECOVERY (2003)
 JV6148
 JV6148'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV6148'FOUND AS DESCRIBED ON SMALL CONCRETE BRIDGE OVER GUNNERS BRANCH ALONG
 JV6148'ROUTE 117 (CLOPPER ROAD) BETWEEN ALLSPICE AND CINNAMON DRIVES.
 JV6148
 JV6148                          STATION RECOVERY (2010)
 JV6148
 JV6148'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV6148'RECOVERED IN GOOD CONDITION. NEW TO REACH FOLLOWS.
 JV6148'
 JV6148'FROM THE INTERSECTION OF MD117 (CLOPPER RD) AND MD119 (GREAT SENECA
 JV6148'HWY), FOLLOW MD117 EAST FOR .5MI TO THE INTERSECTION OF MD117 (CLOPPER
 JV6148'RD) AND MATENY RD. CONTINUE EAST FOR .25MI TO CONCRETE CULVERT OVER
 JV6148'GUNNERS BRANCH AND THE STATION ON THE LEFT.
 JV6148'STATION IS A SMALL DISK WITH ROUNDED CENTER, LOCATED ON THE NORTH SIDE
 JV6148'OF THE WEST HEADWALL, NORTH OF THE CENTERLINE OF THE ROAD AND WEST OF
 JV6148'THE BRANCH.
 JV6148'
 JV6148'DISK IS STAMPED
 JV6148'W.S.S.C. B.M. NO.3596
 JV6148
 JV6148                          STATION RECOVERY (2018)
 JV6148
 JV6148'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2018 (DRD)
 JV6148'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1535 ***********************************************************************
 JV1535  DESIGNATION -  36
 JV1535  PID         -  JV1535
 JV1535  STATE/COUNTY-  MD/BALTIMORE
 JV1535  COUNTRY     -  US
 JV1535  USGS QUAD   -  NEW FREEDOM (2019)
 JV1535
 JV1535                         *CURRENT SURVEY CONTROL
 JV1535  ______________________________________________________________________
 JV1535* NAD 83(1986) POSITION- 39 42 45.8    (N) 076 41 23.6    (W)   HD_HELD2
 JV1535* NAVD 88 ORTHO HEIGHT -   221.205 (meters)      725.74  (feet) ADJUSTED
 JV1535  ______________________________________________________________________
 JV1535  GEOID HEIGHT    -        -32.353 (meters)                     GEOID18
 JV1535  DYNAMIC HEIGHT  -        221.094 (meters)      725.37  (feet) COMP
 JV1535  MODELED GRAVITY -    980,119.1   (mgal)                       NAVD 88
 JV1535
 JV1535  VERT ORDER      -  SECOND    CLASS 0
 JV1535
 JV1535.The horizontal coordinates were established by autonomous hand held GPS
 JV1535.observations and have an estimated accuracy of +/- 10 meters.
 JV1535
 JV1535.The orthometric height was determined by differential leveling and
 JV1535.adjusted by the NATIONAL GEODETIC SURVEY
 JV1535.in June 1991.
 JV1535
 JV1535.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1535.GEOID18 height accuracy estimate available here.
 JV1535
 JV1535.Click photographs - Photos may exist for this station.
 JV1535
 JV1535.The dynamic height is computed by dividing the NAVD 88
 JV1535.geopotential number by the normal gravity value computed on the
 JV1535.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1535.degrees latitude (g = 980.6199 gals.).
 JV1535
 JV1535.The modeled gravity was interpolated from observed gravity values.
 JV1535
 JV1535;                    North         East    Units  Estimated Accuracy
 JV1535;SPC MD       -   227,179.      426,594.      MT  (+/- 10 meters HH2 GPS)
 JV1535
 JV1535_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5514597238(NAD 83)
 JV1535
 JV1535                          SUPERSEDED SURVEY CONTROL
 JV1535
 JV1535  NGVD 29 (11/26/84)  221.409  (m)          726.41   (f) ADJUSTED    2 0
 JV1535
 JV1535.Superseded values are not recommended for survey control.
 JV1535
 JV1535.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1535.See file dsdata.pdf to determine how the superseded data were derived.
 JV1535
 JV1535_MARKER: B = BOLT
 JV1535_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1535_SP_SET: BRIDGE
 JV1535_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1535
 JV1535  HISTORY     - Date     Condition        Report By
 JV1535  HISTORY     - UNK      MONUMENTED       PRR
 JV1535  HISTORY     - 1959     GOOD             CGS
 JV1535  HISTORY     - 1961     GOOD             CGS
 JV1535  HISTORY     - 20070410 GOOD             MD-005
 JV1535
 JV1535                          STATION DESCRIPTION
 JV1535
 JV1535'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1535'0.6 MI NW FROM FREELAND.
 JV1535'0.6 MILE NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV1535'STATION AND STATE HIGHWAY 409 ROAD CROSSING AT FREELAND, AT BRIDGE
 JV1535'NO. 34.89 OVER BEETREE RUN, ON TOP AND IN THE CENTER OF THE
 JV1535'NORTHWEST HEADWALL OF THE BRIDGE, 5 FEET EAST OF THE EAST RAIL
 JV1535'AND 1 FOOT BELOW THE LEVEL OF THE TRACK.
 JV1535
 JV1535                          STATION RECOVERY (1961)
 JV1535
 JV1535'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961
 JV1535'RECOVERED IN GOOD CONDITION.
 JV1535
 JV1535                          STATION RECOVERY (2007)
 JV1535
 JV1535'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 JV1535'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2007 (PAS).
 JV1535'A COMPLETE DESCRIPTION FOLLOWS - THE STATION IS LOCATED 1.0 MILES
 JV1535'SOUTHEAST OF FREELAND IN BALTIMORE COUNTY.
 JV1535'TO REACH THE STATION FROM THE FREELAND POST OFFICE, PROCEED SOUTHWEST
 JV1535'ON NEW FREEDOM ROAD 0.3 MILE TO OAKLAND ROAD.
 JV1535'TURN LEFT ON OAKLAND ROAD AND PROCEED SOUTHEAST FOR 0.5 MILE TO RIDGE
 JV1535'ROAD.
 JV1535'TURN LEFT, STAYING ON OAKLAND ROAD, AND PROCEED NORTHEAST FOR 0.4 MILE
 JV1535'TO KEENEY ROAD.
 JV1535'TURN RIGHT, STAYING ON OAKLAND ROAD, AND PROCEED SOUTHEAST FOR 0.2
 JV1535'MILE TO A DRIVEWAY (AT A SHARP CURVE TO THE LEFT IN OAKLAND ROAD) ON
 JV1535'THE RIGHT.
 JV1535'TURN RIGHT ON TO THE DRIVEWAY AND PROCEED SOUTH 250 FEET TO THE
 JV1535'GUNPOWDER FALLS STATE PARK TRAIL (NCRR TRAIL). PROCEED SOUTHEAST,
 JV1535'ALONG THE NCRR TRAIL, 300 FEET TO AN OLD RAILROAD BRIDGE OVER BEETREE
 JV1535'RUN AND THE STATION MARK ON THE LEFT.
 JV1535'THE STATION IS A BOLT SET IN THE TOP AND IN THE MIDDLE OF THE
 JV1535'NORTHEAST BRIDGE WALL OVER BEETREE RUN AND ABOUT LEVEL WITH THE TRAIL
 JV1535'SURFACE.
 JV1535'THE BOLT IS 0.5 FEET SOUTHWEST OF THE FACE OF THE BRIDGE, 2.4 FEET
 JV1535'NORTHEAST OF A CHAIN LINK FENCE, 12.2 FEET SOUTHEAST OF THE ANGLE
 JV1535'BREAK FOR THE WINGWALL ON THE NORTHWEST SIDE OF BEETREE RUN AND 13.0
 JV1535'FEET NORTHWEST OF THE ANGLE BREAK FOR THE WINGWALL ON THE SOUTHEAST
 JV1535'SIDE OF BEETREE RUN.
 JV1535'THE STATION IS LOCATED IN A SLIGHTLY WOODED AREA WITH SOME AREAS OPEN
 JV1535'TO THE SKY. GPS OBSERVATIONS MAY BE OBTAINED SEASONALLY AND NOT
 JV1535'YEAR-ROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7818 ***********************************************************************
 DR7818  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7818  DESIGNATION -  36
 DR7818  PID         -  DR7818
 DR7818  STATE/COUNTY-  MD/QUEEN ANNES
 DR7818  COUNTRY     -  US
 DR7818  USGS QUAD   -  CHURCH HILL (2017)
 DR7818
 DR7818                         *CURRENT SURVEY CONTROL
 DR7818  ______________________________________________________________________
 DR7818* NAD 83(2011) POSITION- 39 11 12.69219(N) 075 56 54.59907(W)   ADJUSTED
 DR7818* NAD 83(2011) ELLIP HT-    -9.382 (meters)        (02/02/22)   ADJUSTED
 DR7818* NAD 83(2011) EPOCH   -  2010.00
 DR7818* NAVD 88 ORTHO HEIGHT -    24.24  (meters)       79.5   (feet) GPS OBS
 DR7818  ______________________________________________________________________
 DR7818  GEOID HEIGHT    -        -33.620 (meters)                     GEOID18
 DR7818  NAD 83(2011) X  -  1,201,888.023 (meters)                     COMP
 DR7818  NAD 83(2011) Y  - -4,802,117.196 (meters)                     COMP
 DR7818  NAD 83(2011) Z  -  4,008,411.336 (meters)                     COMP
 DR7818  LAPLACE CORR    -         -2.64  (seconds)                    DEFLEC18
 DR7818
 DR7818  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7818  Standards:
 DR7818         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7818            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7818  -------------------------------------------------------------------
 DR7818  NETWORK    0.72   1.63           0.32   0.26   0.83     -0.18784799
 DR7818  -------------------------------------------------------------------
 DR7818  Click here for local accuracies and other accuracy information.
 DR7818
 DR7818.The horizontal coordinates were established by GPS observations
 DR7818.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7818
 DR7818.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7818.been affixed to the stable North American tectonic plate. See 
 DR7818.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7818
 DR7818.The horizontal coordinates are valid at the epoch date displayed above
 DR7818.which is a decimal equivalence of Year/Month/Day.
 DR7818
 DR7818.The orthometric height was determined by GPS observations and a
 DR7818.high-resolution geoid model using precise GPS observation and
 DR7818.processing techniques.
 DR7818
 DR7818.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7818.GEOID18 height accuracy estimate available here.
 DR7818
 DR7818.Click photographs - Photos may exist for this station.
 DR7818
 DR7818.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7818
 DR7818.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7818
 DR7818.The ellipsoidal height was determined by GPS observations
 DR7818.and is referenced to NAD 83.
 DR7818
 DR7818. The following values were computed from the NAD 83(2011) position.
 DR7818
 DR7818;                    North         East     Units Scale Factor Converg.
 DR7818;SPC MD       -   169,273.081   490,842.388   MT  0.99996455   +0 39 35.8
 DR7818;SPC MD       -   555,356.77  1,610,372.07   sFT  0.99996455   +0 39 35.8
 DR7818;UTM  18      - 4,337,941.297   418,083.447   MT  0.99968262   -0 35 57.6
 DR7818
 DR7818!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7818!SPC MD       -   1.00000147  x   0.99996455  =   0.99996602
 DR7818!UTM  18      -   1.00000147  x   0.99968262  =   0.99968409
 DR7818
 DR7818_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1808337941(NAD 83)
 DR7818
 DR7818                          SUPERSEDED SURVEY CONTROL
 DR7818
 DR7818.No superseded survey control is available for this station.
 DR7818
 DR7818_MARKER: DD = SURVEY DISK
 DR7818_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7818_STAMPING: 36
 DR7818_MARK LOGO: MD-035
 DR7818_PROJECTION: RECESSED 25 CENTIMETERS
 DR7818_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7818+STABILITY: SURFACE MOTION
 DR7818_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7818+SATELLITE: SATELLITE OBSERVATIONS - April 23, 2021
 DR7818
 DR7818  HISTORY     - Date     Condition        Report By
 DR7818  HISTORY     - 20210309 MONUMENTED       MD-035
 DR7818  HISTORY     - 20210423 GOOD             MDSHA
 DR7818
 DR7818                          STATION DESCRIPTION
 DR7818
 DR7818'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7818'THE MARK IS LOCATED ABOUT 4.8 MI (7.7 KM) WEST OF SUDLERSVILLE, 4.0 MI
 DR7818'(6.4 KM) SOUTH-SOUTHWEST OF CRUMPTON AND 3.7 MI (6.0 KM)
 DR7818'NORTH-NORTHEAST OF CHURCH HILL.
 DR7818'
 DR7818'TO REACH FROM THE JUNCTION OF US 301 AND MD 190, GO NORTHWEST ON MD
 DR7818'190 FOR 1.21 MI (1.95 KM) TO AN INTERSECTION.  TURN LEFT AND GO
 DR7818'WEST-SOUTHWEST ON PONDTOWN ROAD FOR 2.75 MI (4.42 KM) TO THE MARK ON
 DR7818'THE RIGHT.
 DR7818'
 DR7818'IT IS 104.5 FT (31.9 M) WEST OF POWER POLE NUMBER CHOPTANK 194 002,
 DR7818'85.3 FT (26.0 M) NORTH OF POWER LINE POLE NUMBER CHOPTANK 194 001,
 DR7818'62.7 FT (19.1 M) SOUTHEAST OF A METAL HIGH-VOLTAGE POWER POLE NUMBER
 DR7818'DPL 37178/23214, 31.7 FT (9.7 M) SOUTHEAST OF A METAL HIGH-VOLTAGE
 DR7818'POWER POLE NUMBER DPL 37164/23209, 28.8 FT (8.8 M) NORTHWEST OF THE
 DR7818'CENTERLINE OF PONDTOWN ROAD, 23.4 FT (7.1 M) NORTHEAST OF THE
 DR7818'CENTERLINE OF A 30 FT (9.1 M) WIDE GRAVEL DRIVEWAY LEADING TO AN
 DR7818'ELECTRICAL SUBSTATION AND SET IN THE TOP OF A 12-IN (30 CM) ROUND
 DR7818'CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2223 ***********************************************************************
 JV2223  DESIGNATION -  36+14 BORR
 JV2223  PID         -  JV2223
 JV2223  STATE/COUNTY-  MD/MONTGOMERY
 JV2223  COUNTRY     -  US
 JV2223  USGS QUAD   -  POOLESVILLE (2016)
 JV2223
 JV2223                         *CURRENT SURVEY CONTROL
 JV2223  ______________________________________________________________________
 JV2223* NAD 83(1986) POSITION- 39 13 19.     (N) 077 26 02.     (W)   SCALED
 JV2223* NAVD 88 ORTHO HEIGHT -    99.918 (meters)      327.81  (feet) ADJUSTED
 JV2223  ______________________________________________________________________
 JV2223  GEOID HEIGHT    -        -32.334 (meters)                     GEOID18
 JV2223  DYNAMIC HEIGHT  -         99.864 (meters)      327.64  (feet) COMP
 JV2223  MODELED GRAVITY -    980,085.7   (mgal)                       NAVD 88
 JV2223
 JV2223  VERT ORDER      -  FIRST     CLASS II
 JV2223
 JV2223.The horizontal coordinates were scaled from a map and have
 JV2223.an estimated accuracy of +/- 6 seconds.
 JV2223
 JV2223.The orthometric height was determined by differential leveling and
 JV2223.adjusted by the NATIONAL GEODETIC SURVEY
 JV2223.in June 1991.
 JV2223
 JV2223.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2223.GEOID18 height accuracy estimate available here.
 JV2223
 JV2223.Click photographs - Photos may exist for this station.
 JV2223
 JV2223.The dynamic height is computed by dividing the NAVD 88
 JV2223.geopotential number by the normal gravity value computed on the
 JV2223.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2223.degrees latitude (g = 980.6199 gals.).
 JV2223
 JV2223.The modeled gravity was interpolated from observed gravity values.
 JV2223
 JV2223;                    North         East    Units  Estimated Accuracy
 JV2223;SPC MD       -   172,730.      362,530.      MT  (+/- 180 meters Scaled)
 JV2223
 JV2223_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ898442(NAD 83)
 JV2223
 JV2223                          SUPERSEDED SURVEY CONTROL
 JV2223
 JV2223  NGVD 29 (11/26/84)  100.133  (m)          328.52   (f) ADJUSTED    1 2
 JV2223
 JV2223.Superseded values are not recommended for survey control.
 JV2223
 JV2223.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2223.See file dsdata.pdf to determine how the superseded data were derived.
 JV2223
 JV2223_MARKER: Q = CHISELED SQUARE
 JV2223_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2223_SP_SET: SIGNAL BASE
 JV2223_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2223
 JV2223  HISTORY     - Date     Condition        Report By
 JV2223  HISTORY     - UNK      MONUMENTED       BORR
 JV2223  HISTORY     - 1938     GOOD             CGS
 JV2223
 JV2223                          STATION DESCRIPTION
 JV2223
 JV2223'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2223'0.5 MI NW FROM DICKERSON.
 JV2223'0.5 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2223'STATION AT DICKERSON, MONTGOMERY COUNTY, 60 FEET SOUTHEAST OF
 JV2223'BRIDGE 37-A, AT SIGNAL W 36+14, ON THE SOUTHWEST CORNER OF THE
 JV2223'CONCRETE BASE, 12 FEET NORTHEAST OF THE CENTER LINE OF THE
 JV2223'NORTH-BOUND TRACK, AND 6 INCHES BELOW THE LEVEL OF THE RAILS.  A
 JV2223'CHISELED SQUARE.  NOTE-- THE CHISELED SQUARE IS ON THE SOUTHEAST
 JV2223'CORNER OF THE CONCRETE BASE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0545 ***********************************************************************
 HV0545  DESIGNATION -  36.1
 HV0545  PID         -  HV0545
 HV0545  STATE/COUNTY-  MD/ST MARYS
 HV0545  COUNTRY     -  US
 HV0545  USGS QUAD   -  LEONARDTOWN (2016)
 HV0545
 HV0545                         *CURRENT SURVEY CONTROL
 HV0545  ______________________________________________________________________
 HV0545* NAD 83(1986) POSITION- 38 18 04.     (N) 076 38 50.     (W)   SCALED
 HV0545* NAVD 88 ORTHO HEIGHT -    10.669 (meters)       35.00  (feet) POSTED
 HV0545  ______________________________________________________________________
 HV0545  GEOID HEIGHT    -        -33.851 (meters)                     GEOID18
 HV0545  DYNAMIC HEIGHT  -         10.66  (meters)       35.0   (feet) COMP
 HV0545  MODELED GRAVITY -    980,036.5   (mgal)                       NAVD 88
 HV0545
 HV0545  VERT ORDER      -  * POSTED, SEE BELOW
 HV0545
 HV0545.The horizontal coordinates were scaled from a map and have
 HV0545.an estimated accuracy of +/- 6 seconds.
 HV0545
 HV0545.The orthometric height was determined by differential leveling
 HV0545.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0545
 HV0545.* This is a POSTED BENCH MARK height.
 HV0545
 HV0545.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0545.GEOID18 height accuracy estimate available here.
 HV0545
 HV0545.Click photographs - Photos may exist for this station.
 HV0545
 HV0545.The dynamic height is computed by dividing the NAVD 88
 HV0545.geopotential number by the normal gravity value computed on the
 HV0545.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0545.degrees latitude (g = 980.6199 gals.).
 HV0545
 HV0545.The modeled gravity was interpolated from observed gravity values.
 HV0545
 HV0545;                    North         East    Units  Estimated Accuracy
 HV0545;SPC MD       -    70,490.      430,860.      MT  (+/- 180 meters Scaled)
 HV0545
 HV0545_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH559405(NAD 83)
 HV0545
 HV0545                          SUPERSEDED SURVEY CONTROL
 HV0545
 HV0545  NGVD 29 (11/26/84)   10.990  (m)           36.06   (f) ADJUSTED    1 2
 HV0545
 HV0545.Superseded values are not recommended for survey control.
 HV0545
 HV0545.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0545.See file dsdata.pdf to determine how the superseded data were derived.
 HV0545
 HV0545_MARKER: Q = CHISELED SQUARE
 HV0545_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0545_SP_SET: CULVERT
 HV0545_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0545+STABILITY: SURFACE MOTION
 HV0545
 HV0545  HISTORY     - Date     Condition        Report By
 HV0545  HISTORY     - UNK      MONUMENTED       USGS
 HV0545  HISTORY     - 1941     GOOD             CGS
 HV0545  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0545
 HV0545                          STATION DESCRIPTION
 HV0545
 HV0545'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0545'1.3 MI NW FROM LEONARDTOWN.
 HV0545'ABOUT 1.3 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0545'OFFICE AT LEONARDTOWN, SAINT MARYS COUNTY, AT THE JUNCTION OF A
 HV0545'PRIVATE ROAD LEADING NORTH TO A LARGE 2-STORY FARMHOUSE, 87 FEET
 HV0545'NORTHEAST OF POWER-TRANSMISSION LINE POLE 936, AT AN 18-INCH
 HV0545'CONCRETE CULVERT, ON THE CENTER OF THE TOP OF THE EAST HEAD WALL,
 HV0545'29 FEET EAST OF THE CENTER LINE OF THE ROAD, 23 FEET NORTH OF THE
 HV0545'CENTER LINE OF THE HIGHWAY, AND 3.5 FEET SOUTH OF THE CORNER
 HV0545'POST OF A BOARD FENCE.  A CHISELED SQUARE, MARKED 36.1.
 HV0545
 HV0545                          STATION RECOVERY (1971)
 HV0545
 HV0545'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0545'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1341 ***********************************************************************
 JU1341  DESIGNATION -  36.710
 JU1341  PID         -  JU1341
 JU1341  STATE/COUNTY-  MD/CECIL
 JU1341  COUNTRY     -  US
 JU1341  USGS QUAD   -  EARLEVILLE (2016)
 JU1341
 JU1341                         *CURRENT SURVEY CONTROL
 JU1341  ______________________________________________________________________
 JU1341* NAD 83(1986) POSITION- 39 29 22.     (N) 075 58 45.     (W)   SCALED
 JU1341* NAVD 88 ORTHO HEIGHT -    10.872 (meters)       35.67  (feet) ADJUSTED
 JU1341  ______________________________________________________________________
 JU1341  GEOID HEIGHT    -        -33.313 (meters)                     GEOID18
 JU1341  DYNAMIC HEIGHT  -         10.866 (meters)       35.65  (feet) COMP
 JU1341  MODELED GRAVITY -    980,122.2   (mgal)                       NAVD 88
 JU1341
 JU1341  VERT ORDER      -  SECOND    CLASS I
 JU1341
 JU1341.The horizontal coordinates were scaled from a map and have
 JU1341.an estimated accuracy of +/- 6 seconds.
 JU1341
 JU1341.The orthometric height was determined by differential leveling and
 JU1341.adjusted by the NATIONAL GEODETIC SURVEY
 JU1341.in June 1991.
 JU1341
 JU1341.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1341.GEOID18 height accuracy estimate available here.
 JU1341
 JU1341.Click photographs - Photos may exist for this station.
 JU1341
 JU1341.The dynamic height is computed by dividing the NAVD 88
 JU1341.geopotential number by the normal gravity value computed on the
 JU1341.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1341.degrees latitude (g = 980.6199 gals.).
 JU1341
 JU1341.The modeled gravity was interpolated from observed gravity values.
 JU1341
 JU1341;                    North         East    Units  Estimated Accuracy
 JU1341;SPC MD       -   202,830.      487,820.      MT  (+/- 180 meters Scaled)
 JU1341
 JU1341_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ157715(NAD 83)
 JU1341
 JU1341                          SUPERSEDED SURVEY CONTROL
 JU1341
 JU1341  NGVD 29 (11/26/84)   11.103  (m)           36.43   (f) ADJUSTED    2 0
 JU1341
 JU1341.Superseded values are not recommended for survey control.
 JU1341
 JU1341.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1341.See file dsdata.pdf to determine how the superseded data were derived.
 JU1341
 JU1341_MARKER: DD = SURVEY DISK
 JU1341_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1341_STAMPING: BM 36.710 MD
 JU1341_MARK LOGO: NPS
 JU1341_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU1341_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1341+STABILITY: SURFACE MOTION
 JU1341_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1341+SATELLITE: SATELLITE OBSERVATIONS - February 06, 2001
 JU1341
 JU1341  HISTORY     - Date     Condition        Report By
 JU1341  HISTORY     - UNK      MONUMENTED       NPS
 JU1341  HISTORY     - 1964     GOOD             CGS
 JU1341  HISTORY     - 1990     GOOD             USPSQD
 JU1341  HISTORY     - 20010206 GOOD             MDSHA
 JU1341
 JU1341                          STATION DESCRIPTION
 JU1341
 JU1341'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1341'2.2 MI SW FROM ELK NECK.
 JU1341'ABOUT 2.2 MILES SOUTHWEST ALONG THE MACADAM ROAD FROM ELK NECK, 45
 JU1341'FEET SOUTH OF THE SOUTH END OF THE GRADED SLOPING BANK OF THE
 JU1341'ROAD, 55 FEET EAST OF THE CENTER LINE OF THE ROAD AND 1 FOOT WEST
 JU1341'OF A METAL WITNESS POST AND SIGN AND ABOUT 10 FEET HIGHER THAN THE
 JU1341'ROAD.  A NATIONAL PARK SERVICE BRONZE DISK SET IN THE TOP OF A
 JU1341'CONCRETE POST PROJECTING ABOUT 12 INCHES.
 JU1341
 JU1341                          STATION RECOVERY (1990)
 JU1341
 JU1341'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1341'RECOVERED IN GOOD CONDITION.
 JU1341
 JU1341                          STATION RECOVERY (2001)
 JU1341
 JU1341'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JU1341'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2105 ***********************************************************************
 HV2105  DESIGNATION -  36006 NPS
 HV2105  PID         -  HV2105
 HV2105  STATE/COUNTY-  MD/MONTGOMERY
 HV2105  COUNTRY     -  US
 HV2105  USGS QUAD   -  FALLS CHURCH (2019)
 HV2105
 HV2105                         *CURRENT SURVEY CONTROL
 HV2105  ______________________________________________________________________
 HV2105* NAD 83(1986) POSITION- 38 58 18.     (N) 077 11 04.     (W)   SCALED
 HV2105* NAVD 88 ORTHO HEIGHT -    35.18  (+/-2cm)      115.4   (feet) VERTCON3
 HV2105  ______________________________________________________________________
 HV2105  GEOID HEIGHT    -        -31.790 (meters)                     GEOID18
 HV2105  VERT ORDER      -  ? (See Below)
 HV2105
 HV2105.The horizontal coordinates were scaled from a map and have
 HV2105.an estimated accuracy of +/- 6 seconds.
 HV2105
 HV2105.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2105.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2105
 HV2105.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2105.GEOID18 height accuracy estimate available here.
 HV2105
 HV2105.The vertical order pertains to the NGVD 29 superseded value.
 HV2105
 HV2105.Click photographs - Photos may exist for this station.
 HV2105
 HV2105;                    North         East    Units  Estimated Accuracy
 HV2105;SPC MD       -   144,880.      384,020.      MT  (+/- 180 meters Scaled)
 HV2105
 HV2105_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ107159(NAD 83)
 HV2105
 HV2105                          SUPERSEDED SURVEY CONTROL
 HV2105
 HV2105  NGVD 29 (11/26/84)   35.403  (m)          116.15   (f) ADJUSTED       
 HV2105
 HV2105.Superseded values are not recommended for survey control.
 HV2105
 HV2105.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2105.See file dsdata.pdf to determine how the superseded data were derived.
 HV2105
 HV2105_MARKER: DD = SURVEY DISK
 HV2105_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2105_SP_SET: CONCRETE TILE
 HV2105_STAMPING: 36006
 HV2105_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2105
 HV2105  HISTORY     - Date     Condition        Report By
 HV2105  HISTORY     - UNK      MONUMENTED       NPS
 HV2105  HISTORY     - 1930     GOOD             PBPP
 HV2105  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2105
 HV2105                          STATION DESCRIPTION
 HV2105
 HV2105'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2105'AT DAVID W TAYLOR MODEL BASIN.
 HV2105'AT THE DAVID W. TAYLOR MODEL BASIN, MONTGOMERY COUNTY, MARYLAND,
 HV2105'400 FEET SOUTH OF THE BASIN BUIDING, 440 FEET SOUTHWEST OF THE
 HV2105'SOUTHWEST CORNER, 35 FEET EAST OF POLE TEP 6252 18, AND 11 FEET
 HV2105'SOUTH OF A 6-FOOT WOVEN-WIRE FENCE.  A NATIONAL PARK SERVICE
 HV2105'STANDARD DISK, STAMPED 36006 AND SET IN THE TOP OF A CONCRETE-FILLED
 HV2105'6-INCH TILE.
 HV2105
 HV2105                          STATION RECOVERY (2000)
 HV2105
 HV2105'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2105'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2104 ***********************************************************************
 HV2104  DESIGNATION -  36007
 HV2104  PID         -  HV2104
 HV2104  STATE/COUNTY-  MD/MONTGOMERY
 HV2104  COUNTRY     -  US
 HV2104  USGS QUAD   -  FALLS CHURCH (2019)
 HV2104
 HV2104                         *CURRENT SURVEY CONTROL
 HV2104  ______________________________________________________________________
 HV2104* NAD 83(1986) POSITION- 38 58 18.     (N) 077 11 04.     (W)   SCALED
 HV2104* NAVD 88 ORTHO HEIGHT -    34.84  (+/-2cm)      114.3   (feet) VERTCON3
 HV2104  ______________________________________________________________________
 HV2104  GEOID HEIGHT    -        -31.790 (meters)                     GEOID18
 HV2104  VERT ORDER      -  ? (See Below)
 HV2104
 HV2104.The horizontal coordinates were scaled from a map and have
 HV2104.an estimated accuracy of +/- 6 seconds.
 HV2104
 HV2104.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2104.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2104
 HV2104.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2104.GEOID18 height accuracy estimate available here.
 HV2104
 HV2104.The vertical order pertains to the NGVD 29 superseded value.
 HV2104
 HV2104.Click photographs - Photos may exist for this station.
 HV2104
 HV2104;                    North         East    Units  Estimated Accuracy
 HV2104;SPC MD       -   144,880.      384,020.      MT  (+/- 180 meters Scaled)
 HV2104
 HV2104_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ107159(NAD 83)
 HV2104
 HV2104                          SUPERSEDED SURVEY CONTROL
 HV2104
 HV2104  NGVD 29 (11/26/84)   35.065  (m)          115.04   (f) ADJUSTED       
 HV2104
 HV2104.Superseded values are not recommended for survey control.
 HV2104
 HV2104.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2104.See file dsdata.pdf to determine how the superseded data were derived.
 HV2104
 HV2104_MARKER: DD = SURVEY DISK
 HV2104_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV2104_STAMPING: 36007
 HV2104_MARK LOGO: PBPP
 HV2104_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2104
 HV2104  HISTORY     - Date     Condition        Report By
 HV2104  HISTORY     - UNK      MONUMENTED       PBPP
 HV2104  HISTORY     - 1930     GOOD             PBPP
 HV2104  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2104
 HV2104                          STATION DESCRIPTION
 HV2104
 HV2104'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2104'AT DAVID W TAYLOR MODEL BASIN.
 HV2104'AT THE DAVID W. TAYLOR MODEL BASIN, MONTGOMERY COUNTY, MARYLAND,
 HV2104'400 FEET SOUTH OF THE BASIN BUILDING, 450 FEET SOUTHWEST OF THE
 HV2104'SOUTHWEST CORNER, 9 FEET EAST OF POLE TEP 6252 18, AND 1 FOOT
 HV2104'SOUTH OF A 6-FOOT WOVEN-WIRE FENCE.  A PUBLIC BUILDINGS AND
 HV2104'PUBLIC PARKS STANDARD DISK, STAMPED 36007 AND SET IN THE TOP OF
 HV2104'A CONCRETE-FILLED TILE.
 HV2104
 HV2104                          STATION RECOVERY (2000)
 HV2104
 HV2104'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2104'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6582 ***********************************************************************
 DL6582  DESIGNATION -  36IA
 DL6582  PID         -  DL6582
 DL6582  STATE/COUNTY-  MD/HOWARD
 DL6582  COUNTRY     -  US
 DL6582  USGS QUAD   -  SAVAGE (2016)
 DL6582
 DL6582                         *CURRENT SURVEY CONTROL
 DL6582  ______________________________________________________________________
 DL6582* NAD 83(1986) POSITION- 39 11 26.93   (N) 076 48 40.19   (W)   HD_HELD1
 DL6582* NAVD 88 ORTHO HEIGHT -   121.964 (meters)      400.14  (feet) ADJUSTED
 DL6582  ______________________________________________________________________
 DL6582  GEOID HEIGHT    -        -32.281 (meters)                     GEOID18
 DL6582  DYNAMIC HEIGHT  -        121.899 (meters)      399.93  (feet) COMP
 DL6582  MODELED GRAVITY -    980,090.7   (mgal)                       NAVD 88
 DL6582
 DL6582  VERT ORDER      -  SECOND    CLASS I
 DL6582
 DL6582.The horizontal coordinates were determined by differentially corrected
 DL6582.hand held GPS observations or other comparable positioning techniques
 DL6582.and have an estimated accuracy of +/- 3 meters.
 DL6582
 DL6582.The orthometric height was determined by differential leveling and
 DL6582.adjusted by the NATIONAL GEODETIC SURVEY
 DL6582.in March 2010.
 DL6582
 DL6582.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6582.GEOID18 height accuracy estimate available here.
 DL6582
 DL6582.Click photographs - Photos may exist for this station.
 DL6582
 DL6582.The dynamic height is computed by dividing the NAVD 88
 DL6582.geopotential number by the normal gravity value computed on the
 DL6582.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6582.degrees latitude (g = 980.6199 gals.).
 DL6582
 DL6582.The modeled gravity was interpolated from observed gravity values.
 DL6582
 DL6582;                    North         East    Units  Estimated Accuracy
 DL6582;SPC MD       -   169,205.8     416,313.6     MT  (+/- 3 meters HH1 GPS) 
 DL6582
 DL6582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4358439514(NAD 83)
 DL6582
 DL6582                          SUPERSEDED SURVEY CONTROL
 DL6582
 DL6582.No superseded survey control is available for this station.
 DL6582
 DL6582_MARKER: DD = SURVEY DISK
 DL6582_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6582_STAMPING: 36IA 8 92
 DL6582_MARK LOGO: MD-027
 DL6582_PROJECTION: FLUSH
 DL6582_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6582_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6582+STABILITY: SURFACE MOTION
 DL6582_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6582+SATELLITE: SATELLITE OBSERVATIONS - January 15, 1999
 DL6582
 DL6582  HISTORY     - Date     Condition        Report By
 DL6582  HISTORY     - 1992     MONUMENTED       MD-027
 DL6582  HISTORY     - 19990115 GOOD             MDSHA
 DL6582
 DL6582                          STATION DESCRIPTION
 DL6582
 DL6582'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DL6582'THE STATION IS LOCATED ABOUT 2.9 MI (4.7 KM) EAST-SOUTHEAST OF
 DL6582'COLUMBIA, 2.2 MI (3.5 KM) SOUTH OF JONESTOWN AND 1.9 MI (3.1 KM)
 DL6582'NORTHWEST OF WATERLOO.
 DL6582'
 DL6582'TO REACH FROM THE MARYLAND STATE POLICE BARRACKS IN WATERLOO, GO SOUTH
 DL6582'ON US HIGHWAY 1 FOR 0.2 MI (0.3 KM) TO AN INTERSECTION.  TURN RIGHT
 DL6582'AND GO NORTHWEST ON STATE HIGHWAY 175 FOR 2.0 MI (3.2 KM) TO SNOWDEN
 DL6582'RIVER PARKWAY AND THE STATION ON THE LEFT.
 DL6582'
 DL6582'IT IS LOCATED IN THE SOUTHEAST ANGLE OF THE INTERSECTION, 3.0 FT (0.9
 DL6582'M) SOUTHWEST OF THE SOUTHWEST EDGE OF THE SHOULDER FOR THE EASTBOUND
 DL6582'LANES OF THE HIGHWAY, 47.2 FT (14.4 M) SOUTHEAST OF A METAL TRAFFIC
 DL6582'SIGNAL POLE, 138.3 FT (42.2 M) NORTHWEST OF METAL SUPPORT POLE NUMBER
 DL6582'13075 FOR A LARGE OVERHEAD SIGN AND SET IN THE TOP OF A 10 INCH (25
 DL6582'CM) ROUND CONCRETE MONUMENT ABOUT LEVEL WITH THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1534 ***********************************************************************
 JV1534  DESIGNATION -  37
 JV1534  PID         -  JV1534
 JV1534  STATE/COUNTY-  MD/BALTIMORE
 JV1534  COUNTRY     -  US
 JV1534  USGS QUAD   -  NEW FREEDOM (2019)
 JV1534
 JV1534                         *CURRENT SURVEY CONTROL
 JV1534  ______________________________________________________________________
 JV1534* NAD 83(1986) POSITION- 39 43 10.44   (N) 076 41 50.91   (W)   HD_HELD1
 JV1534* NAVD 88 ORTHO HEIGHT -   237.537 (meters)      779.32  (feet) ADJUSTED
 JV1534  ______________________________________________________________________
 JV1534  GEOID HEIGHT    -        -32.369 (meters)                     GEOID18
 JV1534  DYNAMIC HEIGHT  -        237.417 (meters)      778.93  (feet) COMP
 JV1534  MODELED GRAVITY -    980,117.2   (mgal)                       NAVD 88
 JV1534
 JV1534  VERT ORDER      -  SECOND    CLASS 0
 JV1534
 JV1534.The horizontal coordinates were determined by differentially corrected
 JV1534.hand held GPS observations or other comparable positioning techniques
 JV1534.and have an estimated accuracy of +/- 3 meters.
 JV1534
 JV1534.The orthometric height was determined by differential leveling and
 JV1534.adjusted by the NATIONAL GEODETIC SURVEY
 JV1534.in June 1991.
 JV1534
 JV1534.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1534.GEOID18 height accuracy estimate available here.
 JV1534
 JV1534.Click photographs - Photos may exist for this station.
 JV1534
 JV1534.The dynamic height is computed by dividing the NAVD 88
 JV1534.geopotential number by the normal gravity value computed on the
 JV1534.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1534.degrees latitude (g = 980.6199 gals.).
 JV1534
 JV1534.The modeled gravity was interpolated from observed gravity values.
 JV1534
 JV1534;                    North         East    Units  Estimated Accuracy
 JV1534;SPC MD       -   227,936.5     425,940.6     MT  (+/- 3 meters HH1 GPS) 
 JV1534
 JV1534_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5450998010(NAD 83)
 JV1534
 JV1534                          SUPERSEDED SURVEY CONTROL
 JV1534
 JV1534  NGVD 29 (11/26/84)  237.742  (m)          779.99   (f) ADJUSTED    2 0
 JV1534
 JV1534.Superseded values are not recommended for survey control.
 JV1534
 JV1534.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1534.See file dsdata.pdf to determine how the superseded data were derived.
 JV1534
 JV1534_MARKER: B = BOLT
 JV1534_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1534_SP_SET: BRIDGE
 JV1534_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1534_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1534+SATELLITE: SATELLITE OBSERVATIONS - April 10, 2007
 JV1534
 JV1534  HISTORY     - Date     Condition        Report By
 JV1534  HISTORY     - UNK      MONUMENTED       PRR
 JV1534  HISTORY     - 1959     GOOD             CGS
 JV1534  HISTORY     - 1961     GOOD             CGS
 JV1534  HISTORY     - 20020519 GOOD             INDIV
 JV1534  HISTORY     - 20070410 GOOD             MD-005
 JV1534
 JV1534                          STATION DESCRIPTION
 JV1534
 JV1534'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1534'1.2 MI NW FROM FREELAND.
 JV1534'1.2 MILES NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV1534'STATION AND STATE HIGHWAY 409 ROAD CROSSING AT FREELAND, AT
 JV1534'BRIDGE NO. 35.52 OVER BEETREE RUN, ON TOP OF THE NORTHWEST COPING
 JV1534'OF THE BRIDGE, 32.4 FEET WEST OF THE WEST RAIL, 2 FEET BELOW THE
 JV1534'LEVEL OF THE TRACK.
 JV1534
 JV1534                          STATION RECOVERY (1961)
 JV1534
 JV1534'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961
 JV1534'RECOVERED IN GOOD CONDITION.
 JV1534
 JV1534                          STATION RECOVERY (2002)
 JV1534
 JV1534'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (JML)
 JV1534'RECOVERED IN GOOD CONDITION.
 JV1534
 JV1534                          STATION RECOVERY (2007)
 JV1534
 JV1534'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 JV1534'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2007 (PAS).
 JV1534'A COMPLETE DESCRIPTION FOLLOWS - THE STATION IS LOCATED 0.5 MILE
 JV1534'NORTHEAST OF FREELAND IN BALTIMORE COUNTY.
 JV1534'
 JV1534'TO REACH THE STATION FROM THE FREELAND POST OFFICE, PROCEED NORTHEAST
 JV1534'AND NORTH ON NEW FREEDOM ROAD 0.6 MILE TO SINGER ROAD.
 JV1534'TURN RIGHT ON SINGER ROAD AND PROCEED NORTHEAST FOR 0.1 MILE TO ORWIG
 JV1534'ROAD.
 JV1534'TURN RIGHT ON TO ORWIG ROAD, AND PROCEED SOUTHEAST FOR 0.4 MILE TO THE
 JV1534'YORK COUNTY HERITAGE RAIL TRAIL.
 JV1534'TURN RIGHT AND PROCEED SOUTHEAST, ALONG THE YORK COUNTY HERITAGE RAIL
 JV1534'TRAIL FOR 1000 FEET TO AN OLD RAILROAD BRIDGE OVER BEETREE RUN AND THE
 JV1534'STATION MARK ON THE RIGHT.
 JV1534'THE STATION IS A BOLT SET IN THE TOP OF THE STONE WINGWALL ON THE
 JV1534'SOUTHWEST SIDE OF THE BRIDGE AND ON THE NORTHWEST OF BEETREE RUN. THE
 JV1534'STATION IS ABOUT 3 FEET BELOW THE TRAIL SURFACE.
 JV1534'
 JV1534'THE BOLT IS 1.1 FEET NORTH OF THE FACE OF THE WALL, 11.8 FEET
 JV1534'SOUTHWEST OF THE END OF A CHAIN LINK FENCE, 19.7 FEET SOUTHWEST OF THE
 JV1534'CENTER OF THE TRAIL, 8.5 FEET WEST OF THE ANGLE BREAK FOR THE WINGWALL
 JV1534'ON THE NORTHWEST SIDE OF BEETREE RUN AND 6.7 FEET EAST OF THE END OF
 JV1534'THE WINGWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0058 ***********************************************************************
 HV0058  DESIGNATION -  37
 HV0058  PID         -  HV0058
 HV0058  STATE/COUNTY-  MD/TALBOT
 HV0058  COUNTRY     -  US
 HV0058  USGS QUAD   -  EASTON (2016)
 HV0058
 HV0058                         *CURRENT SURVEY CONTROL
 HV0058  ______________________________________________________________________
 HV0058* NAD 83(1986) POSITION- 38 46 29.     (N) 076 04 36.     (W)   SCALED
 HV0058* NAVD 88 ORTHO HEIGHT -    11.167 (meters)       36.64  (feet) ADJUSTED
 HV0058  ______________________________________________________________________
 HV0058  GEOID HEIGHT    -        -34.665 (meters)                     GEOID18
 HV0058  DYNAMIC HEIGHT  -         11.160 (meters)       36.61  (feet) COMP
 HV0058  MODELED GRAVITY -    980,036.5   (mgal)                       NAVD 88
 HV0058
 HV0058  VERT ORDER      -  SECOND    CLASS 0
 HV0058
 HV0058.The horizontal coordinates were scaled from a map and have
 HV0058.an estimated accuracy of +/- 6 seconds.
 HV0058
 HV0058.The orthometric height was determined by differential leveling and
 HV0058.adjusted by the NATIONAL GEODETIC SURVEY
 HV0058.in June 1991.
 HV0058
 HV0058.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0058.GEOID18 height accuracy estimate available here.
 HV0058
 HV0058.Click photographs - Photos may exist for this station.
 HV0058
 HV0058.The dynamic height is computed by dividing the NAVD 88
 HV0058.geopotential number by the normal gravity value computed on the
 HV0058.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0058.degrees latitude (g = 980.6199 gals.).
 HV0058
 HV0058.The modeled gravity was interpolated from observed gravity values.
 HV0058
 HV0058;                    North         East    Units  Estimated Accuracy
 HV0058;SPC MD       -   123,400.      480,230.      MT  (+/- 180 meters Scaled)
 HV0058
 HV0058_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH064923(NAD 83)
 HV0058
 HV0058                          SUPERSEDED SURVEY CONTROL
 HV0058
 HV0058  NGVD 29 (11/26/84)   11.404  (m)           37.41   (f) ADJUSTED    2 0
 HV0058
 HV0058.Superseded values are not recommended for survey control.
 HV0058
 HV0058.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0058.See file dsdata.pdf to determine how the superseded data were derived.
 HV0058
 HV0058_MARKER: DB = BENCH MARK DISK
 HV0058_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0058_SP_SET: STEPS
 HV0058_STAMPING: 37 BALTO MARYLAND
 HV0058_MARK LOGO: USGS
 HV0058_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0058
 HV0058  HISTORY     - Date     Condition        Report By
 HV0058  HISTORY     - 1899     MONUMENTED       USGS
 HV0058  HISTORY     - 1942     GOOD             CGS
 HV0058  HISTORY     - 19961220 MARK NOT FOUND   USPSQD
 HV0058
 HV0058                          STATION DESCRIPTION
 HV0058
 HV0058'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0058'IN EASTON.
 HV0058'AT THE FRONT ENTRANCE TO THE OLD COURT HOUSE, SET VERTICALLY IN
 HV0058'THE SOUTH END OF THE FIRST STEP FROM THE BOTTOM.  A UNITED STATES
 HV0058'GEOLOGICAL SURVEY STANDARD DISK.
 HV0058
 HV0058                          STATION RECOVERY (1996)
 HV0058
 HV0058'RECOVERY NOTE BY US POWER SQUADRON 1996
 HV0058'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0059 ***********************************************************************
 HV0059  DESIGNATION -  37 RESET
 HV0059  PID         -  HV0059
 HV0059  STATE/COUNTY-  MD/TALBOT
 HV0059  COUNTRY     -  US
 HV0059  USGS QUAD   -  EASTON (2016)
 HV0059
 HV0059                         *CURRENT SURVEY CONTROL
 HV0059  ______________________________________________________________________
 HV0059* NAD 83(1986) POSITION- 38 46 29.00   (N) 076 04 36.54   (W)   HD_HELD1
 HV0059* NAVD 88 ORTHO HEIGHT -    10.973 (meters)       36.00  (feet) ADJUSTED
 HV0059  ______________________________________________________________________
 HV0059  GEOID HEIGHT    -        -34.665 (meters)                     GEOID18
 HV0059  DYNAMIC HEIGHT  -         10.966 (meters)       35.98  (feet) COMP
 HV0059  MODELED GRAVITY -    980,036.5   (mgal)                       NAVD 88
 HV0059
 HV0059  VERT ORDER      -  FIRST     CLASS II
 HV0059
 HV0059.The horizontal coordinates were determined by differentially corrected
 HV0059.hand held GPS observations or other comparable positioning techniques
 HV0059.and have an estimated accuracy of +/- 3 meters.
 HV0059
 HV0059.The orthometric height was determined by differential leveling and
 HV0059.adjusted by the NATIONAL GEODETIC SURVEY
 HV0059.in June 1991.
 HV0059
 HV0059.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0059.GEOID18 height accuracy estimate available here.
 HV0059
 HV0059.Click photographs - Photos may exist for this station.
 HV0059
 HV0059.The dynamic height is computed by dividing the NAVD 88
 HV0059.geopotential number by the normal gravity value computed on the
 HV0059.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0059.degrees latitude (g = 980.6199 gals.).
 HV0059
 HV0059.The modeled gravity was interpolated from observed gravity values.
 HV0059
 HV0059;                    North         East    Units  Estimated Accuracy
 HV0059;SPC MD       -   123,404.2     480,219.8     MT  (+/- 3 meters HH1 GPS) 
 HV0059
 HV0059_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0646092328(NAD 83)
 HV0059
 HV0059                          SUPERSEDED SURVEY CONTROL
 HV0059
 HV0059  NGVD 29 (11/26/84)   11.210  (m)           36.78   (f) ADJUSTED    1 2
 HV0059
 HV0059.Superseded values are not recommended for survey control.
 HV0059
 HV0059.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0059.See file dsdata.pdf to determine how the superseded data were derived.
 HV0059
 HV0059_MARKER: DB = BENCH MARK DISK
 HV0059_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV0059_STAMPING: 37 RESET 1958 37.169
 HV0059_MARK LOGO: USGS
 HV0059_PROJECTION: PROJECTING 15 CENTIMETERS
 HV0059_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0059_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0059_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0059+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2006
 HV0059
 HV0059  HISTORY     - Date     Condition        Report By
 HV0059  HISTORY     - 1958     MONUMENTED       LOCENG
 HV0059  HISTORY     - 1971     GOOD             NGS
 HV0059  HISTORY     - 19920716 GOOD             USPSQD
 HV0059  HISTORY     - 19990919 GOOD             NGS
 HV0059  HISTORY     - 20000726 GOOD             MDSHA
 HV0059  HISTORY     - 20020221 GOOD             USPSQD
 HV0059  HISTORY     - 20050120 GOOD             USPSQD
 HV0059  HISTORY     - 20060516 GOOD             USPSQD
 HV0059  HISTORY     - 20140606 GOOD             RODCON
 HV0059  HISTORY     - 20180806 GOOD             GEOCAC
 HV0059
 HV0059                          STATION DESCRIPTION
 HV0059
 HV0059'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0059'AT EASTON.
 HV0059'AT EASTON, AT THE TALBOT COUNTY COURTHOUSE, ALONG THE EAST SIDE
 HV0059'OF THE COURTHOUSE LAWN, AT THE NORTHWEST ANGLE OF WASHINGTON
 HV0059'STREET AND DOVER STREET, 0.6 FOOT SOUTHEAST OF THE SOUTHEAST
 HV0059'CORNER OF THE CONFEDERATE SOLDIERS MONUMENT, A DISK ON THE TOP
 HV0059'OF AN IRON PIPE ENCASED IN CONCRETE AND PROJECTING 6 INCHES ABOVE
 HV0059'THE LEVEL OF THE GROUND.
 HV0059
 HV0059                          STATION RECOVERY (1992)
 HV0059
 HV0059'RECOVERY NOTE BY US POWER SQUADRON 1992 (SRD)
 HV0059'RECOVERED IN GOOD CONDITION.
 HV0059
 HV0059                          STATION RECOVERY (1999)
 HV0059
 HV0059'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (DW)
 HV0059'RECOVERED IN GOOD CONDITION.
 HV0059
 HV0059                          STATION RECOVERY (2000)
 HV0059
 HV0059'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV0059'RECOVERED AS DESCRIBED.
 HV0059
 HV0059                          STATION RECOVERY (2002)
 HV0059
 HV0059'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0059'RECOVERED IN GOOD CONDITION.
 HV0059
 HV0059                          STATION RECOVERY (2005)
 HV0059
 HV0059'RECOVERY NOTE BY US POWER SQUADRON 2005 (AEM)
 HV0059'RECOVERED IN GOOD CONDITION.
 HV0059
 HV0059                          STATION RECOVERY (2006)
 HV0059
 HV0059'RECOVERY NOTE BY US POWER SQUADRON 2006
 HV0059'RECOVERED IN GOOD CONDITION.
 HV0059
 HV0059                          STATION RECOVERY (2014)
 HV0059
 HV0059'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 HV0059'RECOVERED IN GOOD CONDITION.
 HV0059
 HV0059                          STATION RECOVERY (2018)
 HV0059
 HV0059'RECOVERY NOTE BY GEOCACHING 2018
 HV0059'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0562 ***********************************************************************
 JV0562  DESIGNATION -  37.5 C OF B
 JV0562  PID         -  JV0562
 JV0562  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0562  COUNTRY     -  US
 JV0562  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0562
 JV0562                         *CURRENT SURVEY CONTROL
 JV0562  ______________________________________________________________________
 JV0562* NAD 83(1986) POSITION- 39 17 06.     (N) 076 37 11.     (W)   SCALED
 JV0562* NAVD 88 ORTHO HEIGHT -    11.183 (meters)       36.69  (feet) ADJUSTED
 JV0562  ______________________________________________________________________
 JV0562  GEOID HEIGHT    -        -32.713 (meters)                     GEOID18
 JV0562  DYNAMIC HEIGHT  -         11.177 (meters)       36.67  (feet) COMP
 JV0562  MODELED GRAVITY -    980,104.0   (mgal)                       NAVD 88
 JV0562
 JV0562  VERT ORDER      -  FIRST     CLASS I
 JV0562
 JV0562.The horizontal coordinates were scaled from a map and have
 JV0562.an estimated accuracy of +/- 6 seconds.
 JV0562
 JV0562.The orthometric height was determined by differential leveling and
 JV0562.adjusted by the NATIONAL GEODETIC SURVEY
 JV0562.in June 1991.
 JV0562
 JV0562.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0562.GEOID18 height accuracy estimate available here.
 JV0562
 JV0562.Click photographs - Photos may exist for this station.
 JV0562
 JV0562.The dynamic height is computed by dividing the NAVD 88
 JV0562.geopotential number by the normal gravity value computed on the
 JV0562.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0562.degrees latitude (g = 980.6199 gals.).
 JV0562
 JV0562.The modeled gravity was interpolated from observed gravity values.
 JV0562
 JV0562;                    North         East    Units  Estimated Accuracy
 JV0562;SPC MD       -   179,710.      432,810.      MT  (+/- 180 meters Scaled)
 JV0562
 JV0562_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ603496(NAD 83)
 JV0562
 JV0562                          SUPERSEDED SURVEY CONTROL
 JV0562
 JV0562  NGVD 29 (11/26/84)   11.424  (m)           37.48   (f) ADJUSTED    1 1
 JV0562
 JV0562.Superseded values are not recommended for survey control.
 JV0562
 JV0562.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0562.See file dsdata.pdf to determine how the superseded data were derived.
 JV0562
 JV0562_MARKER: Q = CHISELED SQUARE
 JV0562_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0562_SP_SET: FOUNDATION
 JV0562_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0562
 JV0562  HISTORY     - Date     Condition        Report By
 JV0562  HISTORY     - UNK      MONUMENTED       MD0050
 JV0562  HISTORY     - 1971     GOOD             NGS
 JV0562  HISTORY     - 19971027 MARK NOT FOUND   USPSQD
 JV0562
 JV0562                          STATION DESCRIPTION
 JV0562
 JV0562'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0562'AT BALTIMORE.
 JV0562'AT BALTIMORE, AT THE NORTH ENTRANCE TO THE BALTIMORE AND OHIO
 JV0562'RAILROAD CAMDEN STATION, A CHISELED SQUARE IN THE TOP OF THE
 JV0562'EAST END OF THE GRANITE FOUNDATION FOR FOUR COLUMNS, 70 1/2
 JV0562'FEET WEST OF THE WEST END OF THE GRANITE STEPS LEADING TO THE
 JV0562'NORTH MAIN ENTRANCE TO THE STATION, 14 FEET SOUTH OF THE SOUTH
 JV0562'CURB OF CAMDEN STREET, 1/2 FOOT EAST OF THE EAST EDGE OF THE
 JV0562'MOST EASTERLY COLUMN, AND ABOUT 2 FEET ABOVE THE LEVEL OF THE
 JV0562'SIDEWALK.
 JV0562
 JV0562                          STATION RECOVERY (1997)
 JV0562
 JV0562'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0562'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0240 ***********************************************************************
 HU0240  DESIGNATION -  37.69
 HU0240  PID         -  HU0240
 HU0240  STATE/COUNTY-  MD/WORCESTER
 HU0240  COUNTRY     -  US
 HU0240  USGS QUAD   -  NINEPIN BRANCH (2016)
 HU0240
 HU0240                         *CURRENT SURVEY CONTROL
 HU0240  ______________________________________________________________________
 HU0240* NAD 83(1986) POSITION- 38 15 04.8    (N) 075 17 32.2    (W)   HD_HELD2
 HU0240* NAVD 88 ORTHO HEIGHT -    10.922 (meters)       35.83  (feet) ADJUSTED
 HU0240  ______________________________________________________________________
 HU0240  GEOID HEIGHT    -        -36.123 (meters)                     GEOID18
 HU0240  DYNAMIC HEIGHT  -         10.915 (meters)       35.81  (feet) COMP
 HU0240  MODELED GRAVITY -    979,994.8   (mgal)                       NAVD 88
 HU0240
 HU0240  VERT ORDER      -  SECOND    CLASS I
 HU0240
 HU0240.The horizontal coordinates were established by autonomous hand held GPS
 HU0240.observations and have an estimated accuracy of +/- 10 meters.
 HU0240
 HU0240.The orthometric height was determined by differential leveling and
 HU0240.adjusted by the NATIONAL GEODETIC SURVEY
 HU0240.in June 1991.
 HU0240
 HU0240.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0240.GEOID18 height accuracy estimate available here.
 HU0240
 HU0240.Click photographs - Photos may exist for this station.
 HU0240
 HU0240.The dynamic height is computed by dividing the NAVD 88
 HU0240.geopotential number by the normal gravity value computed on the
 HU0240.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0240.degrees latitude (g = 980.6199 gals.).
 HU0240
 HU0240.The modeled gravity was interpolated from observed gravity values.
 HU0240
 HU0240;                    North         East    Units  Estimated Accuracy
 HU0240;SPC MD       -    66,299.      549,473.      MT  (+/- 10 meters HH2 GPS)
 HU0240
 HU0240_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7442633741(NAD 83)
 HU0240
 HU0240                          SUPERSEDED SURVEY CONTROL
 HU0240
 HU0240  NGVD 29 (11/26/84)   11.159  (m)           36.61   (f) ADJUSTED    2 0
 HU0240
 HU0240.Superseded values are not recommended for survey control.
 HU0240
 HU0240.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0240.See file dsdata.pdf to determine how the superseded data were derived.
 HU0240
 HU0240_MARKER: B = BOLT
 HU0240_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0240_SP_SET: BUILDING DOOR SILL
 HU0240_MARK LOGO: NONE
 HU0240_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0240_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0240_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0240+SATELLITE: SATELLITE OBSERVATIONS - July 15, 1998
 HU0240
 HU0240  HISTORY     - Date     Condition        Report By
 HU0240  HISTORY     - UNK      MONUMENTED       PRR
 HU0240  HISTORY     - 1962     GOOD             CGS
 HU0240  HISTORY     - 19980715 GOOD             MDSHA
 HU0240
 HU0240                          STATION DESCRIPTION
 HU0240
 HU0240'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0240'AT NEWARK.
 HU0240'AT NEWARK, WORCESTER COUNTY, AT THE QUEPONCO STATION OF THE
 HU0240'PENNSYLVANIA RAILROAD (STATION NO LONGER IN USE), IN THE TOP OF
 HU0240'THE DOORSILL OF THE MENS WAITING ROOM, 105 FEET SOUTH OF THE
 HU0240'CENTERLINE OF A GRADED DIRT ROAD, 20 FEET EAST OF THE CENTERLINE
 HU0240'OF THE MAIN TRACK AND 1 FOOT ABOVE THE RAIL.  A COPPER BOLT.
 HU0240
 HU0240                          STATION RECOVERY (1998)
 HU0240
 HU0240'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 HU0240'THE STATION IS LOCATED AT THE QUEPONCE STATION OF THE PENNSYLVANIA
 HU0240'RAILROAD, IN THE TOP OF THE DOORSILL OF THE WAITING ROOM, 20.0 FEET
 HU0240'(6.1 M) SOUTHEAST OF THE CENTER OF THE RAILROAD, 106.5 FEET (32.5 M)
 HU0240'SOUTHWEST OF THE CENTER OF PATEY WOODS ROAD, 6.5 FEET (2.0 M)
 HU0240'SOUTHWEST OF THE NORTH CORNER OF THE RAILRAOD STATION, 139.2 FEET
 HU0240'(42.4 M) SOUTH OF POWER POLE NUMBER 55635-88964.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0807 ***********************************************************************
 HU0807  DESIGNATION -  37.916
 HU0807  PID         -  HU0807
 HU0807  STATE/COUNTY-  MD/CAROLINE
 HU0807  COUNTRY     -  US
 HU0807  USGS QUAD   -  DENTON (2017)
 HU0807
 HU0807                         *CURRENT SURVEY CONTROL
 HU0807  ______________________________________________________________________
 HU0807* NAD 83(1986) POSITION- 38 53 12.     (N) 075 49 58.     (W)   SCALED
 HU0807* NAVD 88 ORTHO HEIGHT -    11.220 (meters)       36.81  (feet) ADJUSTED
 HU0807  ______________________________________________________________________
 HU0807  GEOID HEIGHT    -        -34.838 (meters)                     GEOID18
 HU0807  DYNAMIC HEIGHT  -         11.213 (meters)       36.79  (feet) COMP
 HU0807  MODELED GRAVITY -    980,041.4   (mgal)                       NAVD 88
 HU0807
 HU0807  VERT ORDER      -  SECOND    CLASS 0
 HU0807
 HU0807.The horizontal coordinates were scaled from a map and have
 HU0807.an estimated accuracy of +/- 6 seconds.
 HU0807
 HU0807.The orthometric height was determined by differential leveling and
 HU0807.adjusted by the NATIONAL GEODETIC SURVEY
 HU0807.in June 1991.
 HU0807
 HU0807.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0807.GEOID18 height accuracy estimate available here.
 HU0807
 HU0807.Click photographs - Photos may exist for this station.
 HU0807
 HU0807.The dynamic height is computed by dividing the NAVD 88
 HU0807.geopotential number by the normal gravity value computed on the
 HU0807.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0807.degrees latitude (g = 980.6199 gals.).
 HU0807
 HU0807.The modeled gravity was interpolated from observed gravity values.
 HU0807
 HU0807;                    North         East    Units  Estimated Accuracy
 HU0807;SPC MD       -   136,070.      501,270.      MT  (+/- 180 meters Scaled)
 HU0807
 HU0807_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ277045(NAD 83)
 HU0807
 HU0807                          SUPERSEDED SURVEY CONTROL
 HU0807
 HU0807  NGVD 29 (11/26/84)   11.459  (m)           37.60   (f) ADJUSTED    2 0
 HU0807
 HU0807.Superseded values are not recommended for survey control.
 HU0807
 HU0807.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0807.See file dsdata.pdf to determine how the superseded data were derived.
 HU0807
 HU0807_MARKER: DD = SURVEY DISK
 HU0807_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0807_STAMPING: 37.916
 HU0807_MARK LOGO: USGS
 HU0807_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0807+STABILITY: SURFACE MOTION
 HU0807_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0807+SATELLITE: SATELLITE OBSERVATIONS - May 22, 2019
 HU0807
 HU0807  HISTORY     - Date     Condition        Report By
 HU0807  HISTORY     - 1899     MONUMENTED       USGS
 HU0807  HISTORY     - 1935     GOOD             CGS
 HU0807  HISTORY     - 1974     GOOD             MDDT
 HU0807  HISTORY     - 19901029 MARK NOT FOUND   NGS
 HU0807  HISTORY     - 20190522 GOOD             INDIV
 HU0807
 HU0807                          STATION DESCRIPTION
 HU0807
 HU0807'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HU0807'IN DENTON.
 HU0807'AT DENTON, CAROLINE COUNTY, ON THE COUNTY COURTHOUSE LAWN, ABOUT
 HU0807'72 FEET SOUTH OF THE BUILDING, 33 FEET WEST OF THE ENTRANCE, 36
 HU0807'FEET NORTH OF THE CENTER LINE OF MAIN STREET, AND ABOUT 1 FOOT
 HU0807'HIGHER THAN THE STREET.  A UNITED STATES GEOLOGICAL SURVEY
 HU0807'STANDARD DISK, STAMPED 37.916 AND SET IN THE TOP OF A 6-INCH
 HU0807'STONE POST.
 HU0807
 HU0807                          STATION RECOVERY (1974)
 HU0807
 HU0807'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1974
 HU0807'RECOVERED IN GOOD CONDITION.
 HU0807
 HU0807                          STATION RECOVERY (1990)
 HU0807
 HU0807'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0807'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
 HU0807
 HU0807                          STATION RECOVERY (2019)
 HU0807
 HU0807'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2019 (MFM)
 HU0807'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8894 ***********************************************************************
 HV8894  DESIGNATION -  3712 RESET
 HV8894  PID         -  HV8894
 HV8894  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8894  COUNTRY     -  US
 HV8894  USGS QUAD   -  BRISTOL (2016)
 HV8894
 HV8894                         *CURRENT SURVEY CONTROL
 HV8894  ______________________________________________________________________
 HV8894* NAD 83(1986) POSITION- 38 48 33.     (N) 076 44 27.     (W)   SCALED
 HV8894* NAVD 88 ORTHO HEIGHT -     6.73  (meters)       22.1   (feet) RESET
 HV8894  ______________________________________________________________________
 HV8894  GEOID HEIGHT    -        -32.969 (meters)                     GEOID18
 HV8894  VERT ORDER      -  THIRD
 HV8894
 HV8894.The horizontal coordinates were scaled from a map and have
 HV8894.an estimated accuracy of +/- 6 seconds.
 HV8894
 HV8894.The orthometric height was computed from unverified reset data.
 HV8894
 HV8894.No vertical observational check was made to the station.
 HV8894
 HV8894.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8894.GEOID18 height accuracy estimate available here.
 HV8894
 HV8894.Click photographs - Photos may exist for this station.
 HV8894
 HV8894;                    North         East    Units  Estimated Accuracy
 HV8894;SPC MD       -   126,850.      422,510.      MT  (+/- 180 meters Scaled)
 HV8894
 HV8894_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH488970(NAD 83)
 HV8894
 HV8894                          SUPERSEDED SURVEY CONTROL
 HV8894
 HV8894  NGVD 29 (11/18/05)    6.97   (m)           22.9    (f) RESET       3  
 HV8894
 HV8894.Superseded values are not recommended for survey control.
 HV8894
 HV8894.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8894.See file dsdata.pdf to determine how the superseded data were derived.
 HV8894
 HV8894_MARKER: DV = VERTICAL CONTROL DISK
 HV8894_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV8894_SP_SET: PARAPET WALL
 HV8894_STAMPING: 3712 WSSC RESET 1986
 HV8894_MARK LOGO: NGS
 HV8894_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8894
 HV8894  HISTORY     - Date     Condition        Report By
 HV8894  HISTORY     - 1986     MONUMENTED       NGS
 HV8894
 HV8894                          STATION DESCRIPTION
 HV8894
 HV8894'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 HV8894'0.5 KM (0.30 MI) SOUTH FROM UPPER MARLBORO.
 HV8894'0.55 KM (0.35 MI) SOUTH ALONG U.S. HIGHWAY 301 FROM ITS JUNCTION WITH
 HV8894'STATE HIGHWAY 4 IN UPPER MARLBORO, IN THE EAST PARAPET WALL OF THE
 HV8894'HIGHWAY BRIDGE FOR THE SOUTH BOUND LANE OF U.S. HIGHWAY 301, 5.2 M
 HV8894'(17.1 FT) EAST OF THE CENTER OF THE SOUTH BOUND LANE, 16.5 M (54.1 FT)
 HV8894'WEST OF THE CENTER OF THE NORTH BOUND LANE, 1.8 M (5.9 FT) SOUTH OF
 HV8894'THE NORTH END OF THE EAST PARAPET WALL OF THE BRIDGE FOR THE SOUTH
 HV8894'BOUND LANE AND 0.3 M (1.0 FT) NORTH FROM THE MOST NORTHERLY EXPANSION
 HV8894'JOINT ON THE BRIDGE.
 HV8894'THE MARK IS 0.9 M ABOVE BRIDGE DECK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1808 ***********************************************************************
 HV1808  DESIGNATION -  376 WSSC
 HV1808  PID         -  HV1808
 HV1808  STATE/COUNTY-  MD/MONTGOMERY
 HV1808  COUNTRY     -  US
 HV1808  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1808
 HV1808                         *CURRENT SURVEY CONTROL
 HV1808  ______________________________________________________________________
 HV1808* NAD 83(1986) POSITION- 38 58 01.     (N) 077 06 10.     (W)   SCALED
 HV1808* NAVD 88 ORTHO HEIGHT -    76.165 (meters)      249.88  (feet) ADJUSTED
 HV1808  ______________________________________________________________________
 HV1808  GEOID HEIGHT    -        -31.886 (meters)                     GEOID18
 HV1808  DYNAMIC HEIGHT  -         76.124 (meters)      249.75  (feet) COMP
 HV1808  MODELED GRAVITY -    980,088.2   (mgal)                       NAVD 88
 HV1808
 HV1808  VERT ORDER      -  FIRST     CLASS II
 HV1808
 HV1808.The horizontal coordinates were scaled from a map and have
 HV1808.an estimated accuracy of +/- 6 seconds.
 HV1808
 HV1808.The orthometric height was determined by differential leveling and
 HV1808.adjusted by the NATIONAL GEODETIC SURVEY
 HV1808.in June 1991.
 HV1808
 HV1808.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1808.GEOID18 height accuracy estimate available here.
 HV1808
 HV1808.Click photographs - Photos may exist for this station.
 HV1808
 HV1808.The dynamic height is computed by dividing the NAVD 88
 HV1808.geopotential number by the normal gravity value computed on the
 HV1808.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1808.degrees latitude (g = 980.6199 gals.).
 HV1808
 HV1808.The modeled gravity was interpolated from observed gravity values.
 HV1808
 HV1808;                    North         East    Units  Estimated Accuracy
 HV1808;SPC MD       -   144,340.      391,090.      MT  (+/- 180 meters Scaled)
 HV1808
 HV1808_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ178152(NAD 83)
 HV1808
 HV1808                          SUPERSEDED SURVEY CONTROL
 HV1808
 HV1808  NGVD 29 (11/26/84)   76.377  (m)          250.58   (f) ADJUSTED    1 2
 HV1808
 HV1808.Superseded values are not recommended for survey control.
 HV1808
 HV1808.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1808.See file dsdata.pdf to determine how the superseded data were derived.
 HV1808
 HV1808_MARKER: Q = CHISELED SQUARE
 HV1808_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1808_SP_SET: BRIDGE
 HV1808_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1808
 HV1808  HISTORY     - Date     Condition        Report By
 HV1808  HISTORY     - UNK      MONUMENTED       WSSC
 HV1808  HISTORY     - 1933     GOOD             CGS
 HV1808  HISTORY     - 20020310 GOOD             USPSQD
 HV1808
 HV1808                          STATION DESCRIPTION
 HV1808
 HV1808'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1808'AT SOMERSET.
 HV1808'AT SOMERSET, MONTGOMERY COUNTY, ON THE GEORGETOWN BRANCH OF THE
 HV1808'BALTIMORE AND OHIO RAILROAD, 800 FEET NORTH OF THE RIVER ROAD
 HV1808'CROSSING, 225 FEET WEST OF THE NORTHWEST CORNER OF THE G.A.
 HV1808'FULLER MARBLE WORKS IN 1933, 120 FEET EAST OF A SMALL FRAME
 HV1808'STORAGE SHED, AT THE NORTH END OF CONCRETE BRIDGE NO. 8, ON THE
 HV1808'TOP OF THE EAST WING WALL, 10 FEET EAST OF THE CENTERLINE OF THE
 HV1808'TRACK, AND ABOUT 1-1/2 FEET BELOW THE TOP OF THE RAIL.  A CHISELED
 HV1808'SQUARE.
 HV1808
 HV1808                          STATION RECOVERY (2002)
 HV1808
 HV1808'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV1808'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1806 ***********************************************************************
 HV1806  DESIGNATION -  378 WSSC
 HV1806  PID         -  HV1806
 HV1806  STATE/COUNTY-  MD/MONTGOMERY
 HV1806  COUNTRY     -  US
 HV1806  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1806
 HV1806                         *CURRENT SURVEY CONTROL
 HV1806  ______________________________________________________________________
 HV1806* NAD 83(1986) POSITION- 38 58 20.     (N) 077 06 06.     (W)   SCALED
 HV1806* NAVD 88 ORTHO HEIGHT -    83.903 (meters)      275.27  (feet) ADJUSTED
 HV1806  ______________________________________________________________________
 HV1806  GEOID HEIGHT    -        -31.881 (meters)                     GEOID18
 HV1806  DYNAMIC HEIGHT  -         83.858 (meters)      275.12  (feet) COMP
 HV1806  MODELED GRAVITY -    980,088.4   (mgal)                       NAVD 88
 HV1806
 HV1806  VERT ORDER      -  FIRST     CLASS II
 HV1806
 HV1806.The horizontal coordinates were scaled from a map and have
 HV1806.an estimated accuracy of +/- 6 seconds.
 HV1806
 HV1806.The orthometric height was determined by differential leveling and
 HV1806.adjusted by the NATIONAL GEODETIC SURVEY
 HV1806.in June 1991.
 HV1806
 HV1806.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1806.GEOID18 height accuracy estimate available here.
 HV1806
 HV1806.Click photographs - Photos may exist for this station.
 HV1806
 HV1806.The dynamic height is computed by dividing the NAVD 88
 HV1806.geopotential number by the normal gravity value computed on the
 HV1806.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1806.degrees latitude (g = 980.6199 gals.).
 HV1806
 HV1806.The modeled gravity was interpolated from observed gravity values.
 HV1806
 HV1806;                    North         East    Units  Estimated Accuracy
 HV1806;SPC MD       -   144,930.      391,190.      MT  (+/- 180 meters Scaled)
 HV1806
 HV1806_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ179157(NAD 83)
 HV1806
 HV1806                          SUPERSEDED SURVEY CONTROL
 HV1806
 HV1806  NGVD 29 (11/26/84)   84.114  (m)          275.96   (f) ADJUSTED    1 2
 HV1806
 HV1806.Superseded values are not recommended for survey control.
 HV1806
 HV1806.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1806.See file dsdata.pdf to determine how the superseded data were derived.
 HV1806
 HV1806_MARKER: Q = CHISELED SQUARE
 HV1806_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1806_SP_SET: CULVERT
 HV1806_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1806
 HV1806  HISTORY     - Date     Condition        Report By
 HV1806  HISTORY     - UNK      MONUMENTED       WSSC
 HV1806  HISTORY     - 1933     GOOD             CGS
 HV1806  HISTORY     - 1933     GOOD             CGS
 HV1806  HISTORY     - 20020310 GOOD             USPSQD
 HV1806
 HV1806                          STATION DESCRIPTION
 HV1806
 HV1806'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1806'0.9 MI S FROM BETHESDA.
 HV1806'0.9 MILE SOUTH ALONG THE GEORGETOWN BRANCH OF THE BALTIMORE AND
 HV1806'OHIO RAILROAD FROM BETHESDA, MONTGOMERY COUNTY, 0.5 MILE NORTH OF
 HV1806'THE RIVER ROAD CROSSING AT SOMERSET, 0.4 MILE SOUTH OF THE
 HV1806'CROSSING OF BRADLEY LANE, AT CONCRETE CULVERT NO. 7 UNDER THE
 HV1806'TRACK AND ON A STREAM FLOWING THROUGH THE PROPERTY OF THE U.S.
 HV1806'DEPARTMENT OF AGRICULTURE BUREAU OF ANIMAL HUSBANDRY FARM,
 HV1806'ON THE NORTH END OF THE EAST HEADWALL, 10 FEET EAST OF THE
 HV1806'CENTERLINE OF THE TRACK, AND ABOUT 1-1/2 FEET BELOW THE TOP OF
 HV1806'THE RAIL.  A CHISELED SQUARE.
 HV1806
 HV1806                          STATION RECOVERY (1933)
 HV1806
 HV1806'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933
 HV1806'RECOVERED IN GOOD CONDITION.
 HV1806
 HV1806                          STATION RECOVERY (2002)
 HV1806
 HV1806'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV1806'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6574 ***********************************************************************
 DL6574  DESIGNATION -  37A2
 DL6574  PID         -  DL6574
 DL6574  STATE/COUNTY-  MD/HOWARD
 DL6574  COUNTRY     -  US
 DL6574  USGS QUAD   -  SAVAGE (2016)
 DL6574
 DL6574                         *CURRENT SURVEY CONTROL
 DL6574  ______________________________________________________________________
 DL6574* NAD 83(1986) POSITION- 39 12 35.89   (N) 076 47 56.24   (W)   HD_HELD1
 DL6574* NAVD 88 ORTHO HEIGHT -   122.832 (meters)      402.99  (feet) ADJUSTED
 DL6574  ______________________________________________________________________
 DL6574  GEOID HEIGHT    -        -32.290 (meters)                     GEOID18
 DL6574  DYNAMIC HEIGHT  -        122.766 (meters)      402.77  (feet) COMP
 DL6574  MODELED GRAVITY -    980,087.3   (mgal)                       NAVD 88
 DL6574
 DL6574  VERT ORDER      -  SECOND    CLASS I
 DL6574
 DL6574.The horizontal coordinates were determined by differentially corrected
 DL6574.hand held GPS observations or other comparable positioning techniques
 DL6574.and have an estimated accuracy of +/- 3 meters.
 DL6574
 DL6574.The orthometric height was determined by differential leveling and
 DL6574.adjusted by the NATIONAL GEODETIC SURVEY
 DL6574.in March 2010.
 DL6574
 DL6574.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6574.GEOID18 height accuracy estimate available here.
 DL6574
 DL6574.Click photographs - Photos may exist for this station.
 DL6574
 DL6574.The dynamic height is computed by dividing the NAVD 88
 DL6574.geopotential number by the normal gravity value computed on the
 DL6574.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6574.degrees latitude (g = 980.6199 gals.).
 DL6574
 DL6574.The modeled gravity was interpolated from observed gravity values.
 DL6574
 DL6574;                    North         East    Units  Estimated Accuracy
 DL6574;SPC MD       -   171,334.6     417,363.6     MT  (+/- 3 meters HH1 GPS) 
 DL6574
 DL6574_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4468141619(NAD 83)
 DL6574
 DL6574                          SUPERSEDED SURVEY CONTROL
 DL6574
 DL6574.No superseded survey control is available for this station.
 DL6574
 DL6574_MARKER: DD = SURVEY DISK
 DL6574_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6574_STAMPING: 37A2 1974
 DL6574_MARK LOGO: MD-027
 DL6574_PROJECTION: FLUSH
 DL6574_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6574_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6574+STABILITY: SURFACE MOTION
 DL6574_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6574+SATELLITE: SATELLITE OBSERVATIONS - December 07, 1999
 DL6574
 DL6574  HISTORY     - Date     Condition        Report By
 DL6574  HISTORY     - 1974     MONUMENTED       MD-027
 DL6574  HISTORY     - 19991207 GOOD             MDSHA
 DL6574
 DL6574                          STATION DESCRIPTION
 DL6574
 DL6574'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DL6574'THE STATION IS LOCATED ABOUT 3.1 MI (5.0 KM) EAST OF COLUMBIA, 2.7 MI
 DL6574'(4.3 KM) NORTH-NORTHWEST OF WATERLOO AND 1.0 MI (1.6 KM)
 DL6574'SOUTH-SOUTHEAST OF JONESTOWN.
 DL6574'
 DL6574'TO REACH FROM THE STATE HIGHWAY 175 BRIDGE OVER INTERSTATE HIGHWAY 95
 DL6574'IN WATERLOO, GO NORTHWEST ON STATE HIGHWAY 175 FOR 0.65 MI (1.0 KM) TO
 DL6574'STATE HIGHWAY 108.  TURN RIGHT AND GO NORTH FOR 1.85 MI (3.0 KM) TO
 DL6574'HOUSE NUMBER 5866 ON THE LEFT AND THE STATION ON THE RIGHT.
 DL6574'
 DL6574'IT IS 51.5 FT (15.7 M) NORTHEAST OF THE CENTERLINE OF THE HIGHWAY, 8.0
 DL6574'FT (2.4 M) NORTHWEST OF THE SOUTHWEST CORNER OF A POST AND WIRE FENCE,
 DL6574'61.5 FT (18.7 M) NORTHWEST OF THE NORTHEAST CONCRETE BASE FOR A ROAD
 DL6574'SIGN (UNDER CONSTRUCTION), 1.0 FT (0.3 M) SOUTHWEST OF A FIBERGLASS
 DL6574'WITNESS POST FLUSH WITH THE GROUND AND ABOUT 4.0 FT (1.2 M) HIGHER
 DL6574'THAN THE ROAD SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6573 ***********************************************************************
 DL6573  DESIGNATION -  37A3
 DL6573  PID         -  DL6573
 DL6573  STATE/COUNTY-  MD/HOWARD
 DL6573  COUNTRY     -  US
 DL6573  USGS QUAD   -  SAVAGE (2016)
 DL6573
 DL6573                         *CURRENT SURVEY CONTROL
 DL6573  ______________________________________________________________________
 DL6573* NAD 83(1986) POSITION- 39 12 26.10   (N) 076 47 48.48   (W)   HD_HELD1
 DL6573* NAVD 88 ORTHO HEIGHT -   117.333 (meters)      384.95  (feet) ADJUSTED
 DL6573  ______________________________________________________________________
 DL6573  GEOID HEIGHT    -        -32.298 (meters)                     GEOID18
 DL6573  DYNAMIC HEIGHT  -        117.270 (meters)      384.74  (feet) COMP
 DL6573  MODELED GRAVITY -    980,087.6   (mgal)                       NAVD 88
 DL6573
 DL6573  VERT ORDER      -  SECOND    CLASS I
 DL6573
 DL6573.The horizontal coordinates were determined by differentially corrected
 DL6573.hand held GPS observations or other comparable positioning techniques
 DL6573.and have an estimated accuracy of +/- 3 meters.
 DL6573
 DL6573.The orthometric height was determined by differential leveling and
 DL6573.adjusted by the NATIONAL GEODETIC SURVEY
 DL6573.in March 2010.
 DL6573
 DL6573.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6573.GEOID18 height accuracy estimate available here.
 DL6573
 DL6573.Click photographs - Photos may exist for this station.
 DL6573
 DL6573.The dynamic height is computed by dividing the NAVD 88
 DL6573.geopotential number by the normal gravity value computed on the
 DL6573.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6573.degrees latitude (g = 980.6199 gals.).
 DL6573
 DL6573.The modeled gravity was interpolated from observed gravity values.
 DL6573
 DL6573;                    North         East    Units  Estimated Accuracy
 DL6573;SPC MD       -   171,033.1     417,550.4     MT  (+/- 3 meters HH1 GPS) 
 DL6573
 DL6573_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4486141313(NAD 83)
 DL6573
 DL6573                          SUPERSEDED SURVEY CONTROL
 DL6573
 DL6573.No superseded survey control is available for this station.
 DL6573
 DL6573_MARKER: DD = SURVEY DISK
 DL6573_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6573_STAMPING: 37A3 1974
 DL6573_MARK LOGO: MD-027
 DL6573_PROJECTION: RECESSED 8 CENTIMETERS
 DL6573_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6573_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6573+STABILITY: SURFACE MOTION
 DL6573_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6573+SATELLITE: SATELLITE OBSERVATIONS - December 07, 1999
 DL6573
 DL6573  HISTORY     - Date     Condition        Report By
 DL6573  HISTORY     - 1974     MONUMENTED       MD-027
 DL6573  HISTORY     - 19991207 GOOD             MDSHA
 DL6573
 DL6573                          STATION DESCRIPTION
 DL6573
 DL6573'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DL6573'THE STATION IS LOCATED ABOUT 3.3 MI (5.3 KM) EAST OF COLUMBIA, 2.5 MI
 DL6573'(4.0 KM) NORTH-NORTHWEST OF WATERLOO AND 1.2 MI (1.9 KM)
 DL6573'SOUTH-SOUTHEAST OF JONESTOWN.
 DL6573'
 DL6573'TO REACH FROM THE STATE HIGHWAY 175 BRIDGE OVER INTERSTATE HIGHWAY 95
 DL6573'IN WATERLOO, GO NORTHWEST ON STATE HIGHWAY 175 FOR 0.65 MI (1.0 KM) TO
 DL6573'STATE HIGHWAY 108.  TURN RIGHT AND GO NORTH FOR 1.65 MI (2.7 KM) TO
 DL6573'OLD MONTGOMERY ROAD AND THE STATION ON THE LEFT ON THE GROUNDS OF
 DL6573'WATERLOO ELEMENTARY SCHOOL.
 DL6573'
 DL6573'IT IS 35.0 FT (10.7 M) SOUTH OF THE CENTERLINE OF THE ROAD, 8.2 FT
 DL6573'(2.5 M) SOUTHEAST OF A WOODEN LIGHT POLE WITH NO NUMBERS, 52.2 FT
 DL6573'(15.9 M) NORTHEAST OF POWER POLE NUMBER 254624, 84.0 FT (25.6 M)
 DL6573'SOUTHEAST OF A FIRE HYDRANT AND 3 INCHES (8 CM) BELOW THE SURFACE OF
 DL6573'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7819 ***********************************************************************
 DR7819  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7819  DESIGNATION -  38
 DR7819  PID         -  DR7819
 DR7819  STATE/COUNTY-  MD/QUEEN ANNES
 DR7819  COUNTRY     -  US
 DR7819  USGS QUAD   -  CHESTERTOWN (2017)
 DR7819
 DR7819                         *CURRENT SURVEY CONTROL
 DR7819  ______________________________________________________________________
 DR7819* NAD 83(2011) POSITION- 39 07 45.25428(N) 076 00 11.09049(W)   ADJUSTED
 DR7819* NAD 83(2011) ELLIP HT-   -16.282 (meters)        (02/02/22)   ADJUSTED
 DR7819* NAD 83(2011) EPOCH   -  2010.00
 DR7819* NAVD 88 ORTHO HEIGHT -    17.38  (meters)       57.0   (feet) GPS OBS
 DR7819  ______________________________________________________________________
 DR7819  GEOID HEIGHT    -        -33.661 (meters)                     GEOID18
 DR7819  NAD 83(2011) X  -  1,198,288.636 (meters)                     COMP
 DR7819  NAD 83(2011) Y  - -4,807,174.323 (meters)                     COMP
 DR7819  NAD 83(2011) Z  -  4,003,446.657 (meters)                     COMP
 DR7819  LAPLACE CORR    -         -3.09  (seconds)                    DEFLEC18
 DR7819
 DR7819  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7819  Standards:
 DR7819         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7819            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7819  -------------------------------------------------------------------
 DR7819  NETWORK    0.78   1.76           0.34   0.29   0.90     -0.17096077
 DR7819  -------------------------------------------------------------------
 DR7819  Click here for local accuracies and other accuracy information.
 DR7819
 DR7819.The horizontal coordinates were established by GPS observations
 DR7819.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7819
 DR7819.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7819.been affixed to the stable North American tectonic plate. See 
 DR7819.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7819
 DR7819.The horizontal coordinates are valid at the epoch date displayed above
 DR7819.which is a decimal equivalence of Year/Month/Day.
 DR7819
 DR7819.The orthometric height was determined by GPS observations and a
 DR7819.high-resolution geoid model using precise GPS observation and
 DR7819.processing techniques.
 DR7819
 DR7819.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7819.GEOID18 height accuracy estimate available here.
 DR7819
 DR7819.Click photographs - Photos may exist for this station.
 DR7819
 DR7819.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7819
 DR7819.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7819
 DR7819.The ellipsoidal height was determined by GPS observations
 DR7819.and is referenced to NAD 83.
 DR7819
 DR7819. The following values were computed from the NAD 83(2011) position.
 DR7819
 DR7819;                    North         East     Units Scale Factor Converg.
 DR7819;SPC MD       -   162,823.733   486,197.017   MT  0.99995960   +0 37 32.5
 DR7819;SPC MD       -   534,197.53  1,595,131.38   sFT  0.99995960   +0 37 32.5
 DR7819;UTM  18      - 4,331,597.318   413,298.803   MT  0.99969256   -0 37 59.0
 DR7819
 DR7819!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7819!SPC MD       -   1.00000255  x   0.99995960  =   0.99996215
 DR7819!UTM  18      -   1.00000255  x   0.99969256  =   0.99969511
 DR7819
 DR7819_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1329831597(NAD 83)
 DR7819
 DR7819                          SUPERSEDED SURVEY CONTROL
 DR7819
 DR7819.No superseded survey control is available for this station.
 DR7819
 DR7819_MARKER: DD = SURVEY DISK
 DR7819_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7819_STAMPING: 38
 DR7819_MARK LOGO: MD-035
 DR7819_PROJECTION: RECESSED 6 CENTIMETERS
 DR7819_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7819+STABILITY: SURFACE MOTION
 DR7819_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7819+SATELLITE: SATELLITE OBSERVATIONS - August 22, 2025
 DR7819
 DR7819  HISTORY     - Date     Condition        Report By
 DR7819  HISTORY     - UNK      MONUMENTED       MD-035
 DR7819  HISTORY     - 20210309 GOOD             MDSHA
 DR7819  HISTORY     - 20250822 GOOD             PROFLN
 DR7819
 DR7819                          STATION DESCRIPTION
 DR7819
 DR7819'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7819'THE MARK IS LOCATED ABOUT 3.2 MI (5.1 KM) NORTHWEST OF PRICE, 1.2 MI
 DR7819'(1.9 KM) SOUTHWEST OF CHURCH HILL AND 0.9 MI (1.4 KM) NORTHEAST OF
 DR7819'STARKEY CORNER.
 DR7819'
 DR7819'TO REACH FROM THE JUNCTION OF US 301 AND MD 213, GO NORTH ON MD 213
 DR7819'FOR 2.00 MI (3.22 KM) TO AN INTERSECTION.  TURN LEFT AND GO NORTHEAST
 DR7819'ON SLIGHT LEFT ONTO COMMERCE ST FOR 0.66 MI (1.06 KM) TO AN
 DR7819'INTERSECTION.  CONTINUE STRAIGHT AHEAD ON MD 213 (CHURCH HILL RD) FOR
 DR7819'6.97 MI (11.21 KM) TO A SIDE ROAD LEFT AND THE MARK ON THE LEFT IN THE
 DR7819'SOUTHWEST ANGLE OF THE INTERSECTION.
 DR7819'
 DR7819'THE MARK IS 34.3 FT (10.5 M) SOUTH OF THE CENTERLINE OF ISLAND CREEK
 DR7819'ROAD, 33.8 FT (10.3 M) NORTHWEST OF THE CENTERLINE OF STATE ROUTE 213,
 DR7819'23.3 FT (7.1 M) NORTHEAST OF A C AND P UTILITY POLE NUMBERED 374, 20.5
 DR7819'FT (6.2 M) EAST-SOUTHEAST OF A ACE/DPL UTILITY POLE NUMBERED
 DR7819'35586-21054, 20.1 FT (6.1 M) EAST-NORTHEAST OF THE MOST SOUTHERN
 DR7819'WOODEN POST FOR A WOODEN SIGN FOR CAMP PECOMETH AND SET IN THE TOP OF
 DR7819'A 12-IN (30 CM) ROUND CONCRETE MONUMENT.
 DR7819
 DR7819                          STATION RECOVERY (2025)
 DR7819
 DR7819'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR7819'RECOVERED AS DESCRIBED, PLACED UNDER A RECTANGULAR UTILITY BOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7037 ***********************************************************************
 JV7037  DESIGNATION -  38 36 001
 JV7037  PID         -  JV7037
 JV7037  STATE/COUNTY-  MD/HOWARD
 JV7037  COUNTRY     -  US
 JV7037  USGS QUAD   -  SYKESVILLE (2016)
 JV7037
 JV7037                         *CURRENT SURVEY CONTROL
 JV7037  ______________________________________________________________________
 JV7037* NAD 83(2011) POSITION- 39 20 24.02028(N) 076 57 14.34667(W)   ADJUSTED
 JV7037* NAD 83(2011) ELLIP HT-   132.939 (meters)        (06/27/12)   ADJUSTED
 JV7037* NAD 83(2011) EPOCH   -  2010.00
 JV7037* NAVD 88 ORTHO HEIGHT -   164.9   (meters)      541.    (feet) GPS OBS
 JV7037  ______________________________________________________________________
 JV7037  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7037  GEOID HEIGHT    -        -31.937 (meters)                     GEOID99
 JV7037  GEOID HEIGHT    -        -31.951 (meters)                     GEOID18
 JV7037  NAD 83(2011) X  -  1,115,030.595 (meters)                     COMP
 JV7037  NAD 83(2011) Y  - -4,812,093.032 (meters)                     COMP
 JV7037  NAD 83(2011) Z  -  4,021,665.562 (meters)                     COMP
 JV7037  LAPLACE CORR    -         -2.43  (seconds)                    DEFLEC18
 JV7037
 JV7037  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7037  Standards:
 JV7037         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7037            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7037  -------------------------------------------------------------------
 JV7037  NETWORK    1.16   1.39           0.52   0.42   0.71      0.02459063
 JV7037  -------------------------------------------------------------------
 JV7037  Click here for local accuracies and other accuracy information.
 JV7037
 JV7037.The horizontal coordinates were established by GPS observations
 JV7037.and adjusted by the National Geodetic Survey in June 2012.
 JV7037
 JV7037.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7037.been affixed to the stable North American tectonic plate. See 
 JV7037.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7037
 JV7037.The horizontal coordinates are valid at the epoch date displayed above
 JV7037.which is a decimal equivalence of Year/Month/Day.
 JV7037
 JV7037.The orthometric height was determined by GPS observations and a
 JV7037.high-resolution geoid model.
 JV7037
 JV7037.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7037.GEOID18 height accuracy estimate available here.
 JV7037
 JV7037.Click photographs - Photos may exist for this station.
 JV7037
 JV7037.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7037
 JV7037.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7037
 JV7037.The ellipsoidal height was determined by GPS observations
 JV7037.and is referenced to NAD 83.
 JV7037
 JV7037. The following values were computed from the NAD 83(2011) position.
 JV7037
 JV7037;                    North         East     Units Scale Factor Converg.
 JV7037;SPC MD       -   185,752.859   403,966.881   MT  0.99998261   +0 01 44.0
 JV7037;SPC MD       -   609,424.17  1,325,348.01   sFT  0.99998261   +0 01 44.0
 JV7037;UTM  18      - 4,356,329.101   331,607.281   MT  0.99994914   -1 14 20.3
 JV7037
 JV7037!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7037!SPC MD       -   0.99997914  x   0.99998261  =   0.99996175
 JV7037!UTM  18      -   0.99997914  x   0.99994914  =   0.99992828
 JV7037
 JV7037_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3160756329(NAD 83)
 JV7037
 JV7037                          SUPERSEDED SURVEY CONTROL
 JV7037
 JV7037  NAD 83(2007)-  39 20 24.02034(N)    076 57 14.34754(W) AD(2002.00) 0
 JV7037  ELLIP H (02/10/07)  132.971  (m)                       GP(2002.00)    
 JV7037  ELLIP H (08/30/02)  132.979  (m)                       GP(       ) 4 2
 JV7037  NAD 83(1991)-  39 20 24.01984(N)    076 57 14.34765(W) AD(       ) 1
 JV7037  ELLIP H (02/23/93)  132.901  (m)                       GP(       ) 4 2
 JV7037  NGVD 29 (02/23/93)  165.1    (m)  GEOID90  model used  GPS OBS        
 JV7037
 JV7037.Superseded values are not recommended for survey control.
 JV7037
 JV7037.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7037.See file dsdata.pdf to determine how the superseded data were derived.
 JV7037
 JV7037_MARKER: DD = SURVEY DISK
 JV7037_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7037_STAMPING: 3836001 1976
 JV7037_MARK LOGO: MD-027
 JV7037_PROJECTION: RECESSED 30 CENTIMETERS
 JV7037_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 JV7037_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7037+STABILITY: SURFACE MOTION
 JV7037_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7037+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 JV7037
 JV7037  HISTORY     - Date     Condition        Report By
 JV7037  HISTORY     - 1976     MONUMENTED       MD-027
 JV7037  HISTORY     - 19901125 GOOD             MD-027
 JV7037  HISTORY     - 19910606 GOOD
 JV7037  HISTORY     - 20000915 GOOD             MD-027
 JV7037
 JV7037                          STATION DESCRIPTION
 JV7037
 JV7037'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7037'THE STATION IS LOCATED ABOUT 4.2 KM (2.60 MI) NORTH OF WEST
 JV7037'FRIENDSHIP, AND 5.9 KM (3.65 MI) NORTHWEST OF COOKSVILLE. OWNERSHIP--
 JV7037'STATE HIGHWAY RIGHT-OF-WAY.
 JV7037'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV7037'STATE HIGHWAY 32 LOCATED 0.6 KM (0.35 MI) NORTH OF THE TOWN OF WEST
 JV7037'FRIENDSHIP, GO 3.5 KM (2.15 MI) NORTH ON STATE HIGHWAY 32 TO THE MARK
 JV7037'ON THE RIGHT.
 JV7037'THE STATION LIES 16.2 M (53.1 FT) EAST FROM THE CENTERLINE OF STATE
 JV7037'HIGHWAY 32, 16.4 M (53.8 FT) SOUTHEAST FROM A NAIL AND CAP SET IN A
 JV7037'BALTIMORE GAS AND ELECTRIC POLE NUMBER 325973, AND 0.6 M (2.0 FT)
 JV7037'WEST FROM A HOWARD COUNTY WITNESS POST.
 JV7037'STATION IS A STANDARD HOWARD COUNTY SURVEY DISC, SET ON TOP OF A 20 CM
 JV7037'DIAMETER ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND. IT IS STAMPED
 JV7037'3836001 1976.
 JV7037'COMMENT--NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV7037'INCLUDED IN THIS GPS SURVEY PROJECT.
 JV7037
 JV7037                          STATION RECOVERY (1991)
 JV7037
 JV7037'RECOVERED 1991
 JV7037'RECOVERED IN GOOD CONDITION.
 JV7037
 JV7037                          STATION RECOVERY (2000)
 JV7037
 JV7037'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7037'REPORT BY HOWARD COUNTY 2000 RECOVERED AS DESCRIBED IN GOOD
 JV7037'CONDITION.
 JV7037'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1631 ***********************************************************************
 JW1631  DESIGNATION -  38 EOM RESET
 JW1631  PID         -  JW1631
 JW1631  STATE/COUNTY-  MD/ALLEGANY
 JW1631  COUNTRY     -  US
 JW1631  USGS QUAD   -  BELLEGROVE (2016)
 JW1631
 JW1631                         *CURRENT SURVEY CONTROL
 JW1631  ______________________________________________________________________
 JW1631* NAD 83(1986) POSITION- 39 42 23.9    (N) 078 20 40.0    (W)   HD_HELD2
 JW1631* NAVD 88 ORTHO HEIGHT -   212.046 (meters)      695.69  (feet) ADJUSTED
 JW1631  ______________________________________________________________________
 JW1631  GEOID HEIGHT    -        -33.635 (meters)                     GEOID18
 JW1631  DYNAMIC HEIGHT  -        211.917 (meters)      695.26  (feet) COMP
 JW1631  MODELED GRAVITY -    980,014.7   (mgal)                       NAVD 88
 JW1631
 JW1631  VERT ORDER      -  SECOND    CLASS I
 JW1631
 JW1631.The horizontal coordinates were established by autonomous hand held GPS
 JW1631.observations and have an estimated accuracy of +/- 10 meters.
 JW1631
 JW1631.The orthometric height was determined by differential leveling and
 JW1631.adjusted by the NATIONAL GEODETIC SURVEY
 JW1631.in April 1995.
 JW1631
 JW1631.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1631.GEOID18 height accuracy estimate available here.
 JW1631
 JW1631.Click photographs - Photos may exist for this station.
 JW1631
 JW1631.The dynamic height is computed by dividing the NAVD 88
 JW1631.geopotential number by the normal gravity value computed on the
 JW1631.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1631.degrees latitude (g = 980.6199 gals.).
 JW1631
 JW1631.The modeled gravity was interpolated from observed gravity values.
 JW1631
 JW1631;                    North         East    Units  Estimated Accuracy
 JW1631;SPC MD       -   227,307.      284,701.      MT  (+/- 10 meters HH2 GPS)
 JW1631
 JW1631_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD2765998569(NAD 83)
 JW1631
 JW1631                          SUPERSEDED SURVEY CONTROL
 JW1631
 JW1631.No superseded survey control is available for this station.
 JW1631
 JW1631_MARKER: DD = SURVEY DISK
 JW1631_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1631_STAMPING: 38 EOM RESET 1984
 JW1631_MARK LOGO: USGS
 JW1631_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1631_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1631+STABILITY: SURFACE MOTION
 JW1631_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW1631+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2009
 JW1631
 JW1631  HISTORY     - Date     Condition        Report By
 JW1631  HISTORY     - 1992     MONUMENTED       USGS
 JW1631  HISTORY     - 19930416 GOOD             MDSHA
 JW1631  HISTORY     - 20070310 GOOD             GEOCAC
 JW1631  HISTORY     - 20090321 GOOD             GEOCAC
 JW1631
 JW1631                          STATION DESCRIPTION
 JW1631
 JW1631'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1993
 JW1631'NO TRACE OF THE OLD BENCH MARK 38 EOM USGS RESET 1962 COULD BE FOUND.
 JW1631'HOWEVER, A U.S. GEOLOGICAL SURVEY BENCH MARK 38 EOM RESET 1984 WAS
 JW1631'FOUND IN THE AREA.  NO DATA ON THIS NEWER MARK COULD BE LOCATED FOR
 JW1631'IT.  A COMPLETE DESCRIPTION OF THIS MARK FOLLOWS.  THE MARK IS
 JW1631'LOCATED ABOUT 8.6 MI (13.8 KM) WEST OF HANCOCK, 8.2 MI (13.2 KM)
 JW1631'NORTHWEST OF BERKLEY SPRINGS AND 1.3 MI (2.1 KM) EAST OF PINEY GROVE.
 JW1631'IT IS ON THE ROAD RIGHT-OF-WAY PROPERTY.  TO REACH FROM A POINT WHERE
 JW1631'THE VICTOR CUSHWA MEMORIAL BRIDGE PASSES OVER THE INTERSTSTE HIGHWAY
 JW1631'68 AT THE SIDELING HILL EXHIBIT CENTER, GO WEST ON INTERSTATE HIGHWAY
 JW1631'68 FOR 3.85 MI (6.20 KM) TO THE MARKER ON THE RIGHT, NORTH OF THE
 JW1631'WESTBOUND LANES.  THE POINT IS MARKED WITH A STANDARD UNITED STATES
 JW1631'GEOLOGICAL SURVEY DISK SET IN A 1.0 FT (0.3 M) ROUND CONCRETE POST.
 JW1631'127.0 FT (38.7 M) NORTH OF THE CENTERLINE OF THE WESTBOUND LANES OF
 JW1631'INTERSTATE HIGHWAY 68, 46.5 FT (14.2 M) NORTHEAST OF THE NORTHEAST
 JW1631'END OF THE WINGWALL OF A MASSIVE DOUBLE CHANNEL CULVERT UNDER THE
 JW1631'HIGHWAY, 79.0 FT (24.1 M) (SLOPE DISTANCE) SOUTHEAST OF A POWER POLE,
 JW1631'POTOMAC EDISON COMPANY NUMBER H40419 1742, 2.5 FT (0.8 M) SOUTHWEST
 JW1631'OF A CARSONITE WITNESS POST AND ABOUT 12.0 FT (3.7 M) LOWER THAN THE
 JW1631'SURFACE OF THE ROAD.
 JW1631
 JW1631                          STATION RECOVERY (2007)
 JW1631
 JW1631'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JW1631'RECOVERED IN GOOD CONDITION.
 JW1631
 JW1631                          STATION RECOVERY (2009)
 JW1631
 JW1631'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 JW1631'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0746 ***********************************************************************
 JV0746  DESIGNATION -  383
 JV0746  PID         -  JV0746
 JV0746  STATE/COUNTY-  MD/CARROLL
 JV0746  COUNTRY     -  US
 JV0746  USGS QUAD   -  SYKESVILLE (2016)
 JV0746
 JV0746                         *CURRENT SURVEY CONTROL
 JV0746  ______________________________________________________________________
 JV0746* NAD 83(1986) POSITION- 39 21 55.32   (N) 076 58 09.28   (W)   HD_HELD1
 JV0746* NAVD 88 ORTHO HEIGHT -   116.485 (meters)      382.17  (feet) ADJUSTED
 JV0746  ______________________________________________________________________
 JV0746  GEOID HEIGHT    -        -31.943 (meters)                     GEOID18
 JV0746  DYNAMIC HEIGHT  -        116.425 (meters)      381.97  (feet) COMP
 JV0746  MODELED GRAVITY -    980,107.1   (mgal)                       NAVD 88
 JV0746
 JV0746  VERT ORDER      -  FIRST     CLASS II
 JV0746
 JV0746.The horizontal coordinates were determined by differentially corrected
 JV0746.hand held GPS observations or other comparable positioning techniques
 JV0746.and have an estimated accuracy of +/- 3 meters.
 JV0746
 JV0746.The orthometric height was determined by differential leveling and
 JV0746.adjusted by the NATIONAL GEODETIC SURVEY
 JV0746.in June 1991.
 JV0746
 JV0746.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0746.GEOID18 height accuracy estimate available here.
 JV0746
 JV0746.Click photographs - Photos may exist for this station.
 JV0746
 JV0746.The dynamic height is computed by dividing the NAVD 88
 JV0746.geopotential number by the normal gravity value computed on the
 JV0746.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0746.degrees latitude (g = 980.6199 gals.).
 JV0746
 JV0746.The modeled gravity was interpolated from observed gravity values.
 JV0746
 JV0746;                    North         East    Units  Estimated Accuracy
 JV0746;SPC MD       -   188,567.9     402,650.5     MT  (+/- 3 meters HH1 GPS) 
 JV0746
 JV0746_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3035359172(NAD 83)
 JV0746
 JV0746                          SUPERSEDED SURVEY CONTROL
 JV0746
 JV0746  NGVD 29 (11/26/84)  116.697  (m)          382.86   (f) ADJUSTED    1 2
 JV0746
 JV0746.Superseded values are not recommended for survey control.
 JV0746
 JV0746.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0746.See file dsdata.pdf to determine how the superseded data were derived.
 JV0746
 JV0746_MARKER: DB = BENCH MARK DISK
 JV0746_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0746_SP_SET: STEP
 JV0746_STAMPING: 383 BALTO MARYLAND
 JV0746_MARK LOGO: USGS
 JV0746_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0746_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0746+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2014
 JV0746
 JV0746  HISTORY     - Date     Condition        Report By
 JV0746  HISTORY     - UNK      MONUMENTED       USGS
 JV0746  HISTORY     - 1941     GOOD             CGS
 JV0746  HISTORY     - 20040402 GOOD             URS
 JV0746  HISTORY     - 20100608 GOOD             NGS
 JV0746  HISTORY     - 20140519 GOOD             RODCON
 JV0746
 JV0746                          STATION DESCRIPTION
 JV0746
 JV0746'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0746'AT SYKESVILLE.
 JV0746'AT SYKESVILLE, CARROLL COUNTY, AT THE SYKESVILLE STATE BANK
 JV0746'BUILDING, 11.0 FEET SOUTH OF THE NORTHEAST CORNER, 6 FEET SOUTH
 JV0746'OF THE ENTRANCE, IN THE EAST FACE OF A GRANITE STEP, 7.5 FEET
 JV0746'WEST OF THE WEST CURB OF MAIN STREET, AND ABOUT 0.3 FOOT ABOVE THE
 JV0746'SIDEWALK.  A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK,
 JV0746'STAMPED 383 BALTO MARYLAND AND SET VERTICALLY.
 JV0746
 JV0746                          STATION RECOVERY (2004)
 JV0746
 JV0746'RECOVERY NOTE BY URS COMPANY 2004
 JV0746'RECOVERED IN GOOD CONDITION.
 JV0746
 JV0746                          STATION RECOVERY (2010)
 JV0746
 JV0746'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV0746'THE BUILDING IS NO LONGER A BAND.  IT IS NOW THE SYKESVILLE PHYSICAL
 JV0746'THERAPY AT 7564 MAIN ST.
 JV0746
 JV0746                          STATION RECOVERY (2014)
 JV0746
 JV0746'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV0746'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4330 ***********************************************************************
 DS4330  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4330  DESIGNATION -  386
 DS4330  PID         -  DS4330
 DS4330  STATE/COUNTY-  MD/ANNE ARUNDEL
 DS4330  COUNTRY     -  US
 DS4330  USGS QUAD   -  DEALE (2016)
 DS4330
 DS4330                         *CURRENT SURVEY CONTROL
 DS4330  ______________________________________________________________________
 DS4330* NAD 83(2011) POSITION- 38 47 18.39266(N) 076 32 59.93471(W)   ADJUSTED
 DS4330* NAD 83(2011) ELLIP HT-   -30.812 (meters)        (01/30/26)   ADJUSTED
 DS4330* NAD 83(2011) EPOCH   -  2010.00
 DS4330* NAVD 88 ORTHO HEIGHT -     2.70  (meters)        8.9   (feet) GPS OBS
 DS4330  ______________________________________________________________________
 DS4330  GEOID HEIGHT    -        -33.507 (meters)                     GEOID18
 DS4330  NAD 83(2011) X  -  1,157,879.564 (meters)                     COMP
 DS4330  NAD 83(2011) Y  - -4,841,517.656 (meters)                     COMP
 DS4330  NAD 83(2011) Z  -  3,974,018.626 (meters)                     COMP
 DS4330  LAPLACE CORR    -         -3.76  (seconds)                    DEFLEC18
 DS4330
 DS4330  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4330  Standards:
 DS4330         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4330            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4330  -------------------------------------------------------------------
 DS4330  NETWORK    0.69   1.80           0.31   0.25   0.92     -0.14392831
 DS4330  -------------------------------------------------------------------
 DS4330  Click here for local accuracies and other accuracy information.
 DS4330
 DS4330.The horizontal coordinates were established by GPS observations
 DS4330.and adjusted by the MD DOT HIGHWAY ADMIN in January 2026.
 DS4330
 DS4330.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4330.frame has been affixed to the stable North American tectonic plate 
 DS4330
 DS4330.The horizontal coordinates are valid at the epoch date displayed above
 DS4330.which is a decimal equivalence of Year/Month/Day.
 DS4330
 DS4330.The orthometric height was determined by GPS observations and a
 DS4330.high-resolution geoid model using precise GPS observation and
 DS4330.processing techniques.
 DS4330
 DS4330.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4330.GEOID18 height accuracy estimate available here.
 DS4330
 DS4330.Click photographs - Photos may exist for this station.
 DS4330
 DS4330.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4330
 DS4330.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4330
 DS4330.The ellipsoidal height was determined by GPS observations
 DS4330.and is referenced to NAD 83.
 DS4330
 DS4330. The following values were computed from the NAD 83(2011) position.
 DS4330
 DS4330;                    North         East     Units Scale Factor Converg.
 DS4330;SPC MD       -   124,617.998   439,097.201   MT  0.99995100   +0 16 56.8
 DS4330;SPC MD       -   408,850.88  1,440,604.73   sFT  0.99995100   +0 16 56.8
 DS4330;UTM  18      - 4,294,441.064   365,382.019   MT  0.99982316   -0 58 16.1
 DS4330
 DS4330!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4330!SPC MD       -   1.00000483  x   0.99995100  =   0.99995583
 DS4330!UTM  18      -   1.00000483  x   0.99982316  =   0.99982799
 DS4330
 DS4330_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6538294441(NAD 83)
 DS4330
 DS4330                          SUPERSEDED SURVEY CONTROL
 DS4330
 DS4330.No superseded survey control is available for this station.
 DS4330
 DS4330_MARKER: DD = SURVEY DISK
 DS4330_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS4330_STAMPING: 386
 DS4330_MARK LOGO: MD-003
 DS4330_PROJECTION: RECESSED 5 CENTIMETERS
 DS4330_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS4330_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4330+SATELLITE: SATELLITE OBSERVATIONS - March 06, 2025
 DS4330
 DS4330  HISTORY     - Date     Condition        Report By
 DS4330  HISTORY     - 19620101 MONUMENTED       MD-003
 DS4330  HISTORY     - 20250306 GOOD             MDSHA
 DS4330
 DS4330                          STATION DESCRIPTION
 DS4330
 DS4330'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4330'THE MARK IS LOCATED ABOUT 6.4 MI (10.3 KM) EAST OF BRISTOL, 5.7 MI
 DS4330'(9.2 KM) NORTH OF NORTH BEACH AND 0.9 MI (1.4 KM) NORTH-NORTHEAST OF
 DS4330'DEALE.
 DS4330'
 DS4330'TO REACH THE MARK FROM THE INTERSECTION OF MD 2 (SOLOMONS ISLAND
 DS4330'ROAD)AND MD 258 (BAY FRONT ROAD) PROCEED EAST ON BAY FRONT ROAD FOR
 DS4330'3.85 KM (2.39 MI) TO THE INTERSECTION WITH SWAMP CIRCLE ROAD.  TURN
 DS4330'RIGHT ONTO SWAMP CIRCLE ROAD AND PROCEED FOR 0.67 KM (0.42 MI) TO THE
 DS4330'INTERSECTION WITH DEALE CHURCHTON ROAD.  TURN RIGHT ONTO DEALE
 DS4330'CHURCHTON ROAD PROCEED FOR 0.17 KM (0.11 MI) TO THE MARK ON THE RIGHT.
 DS4330'THE MARK IS 74.6 FT (22.7 M) WEST-SOUTHWEST OF A SEWER MANHOLE, 54.2
 DS4330'FT (16.5 M) SOUTHWEST OF THE CENTERLINE OF A PAVED DRIVEWAY FOR 5867
 DS4330'DEALE CHURCHTON ROAD, 25.3 FT (7.7 M) WEST-NORTHWEST OF THE CENTERLINE
 DS4330'OF DEALE CHURCHTOWN ROAD, 21.0 FT (6.4 M) NORTHEAST OF THE CENTERLINE
 DS4330'OF A PAVED DRIVEWAY FOR 5870 DEALE CHURCHTON ROAD, 6.7 FT (2.0 M) EAST
 DS4330'OF A UTILITY POLE NUMBERED BGE 306826 SET IN THE TOP OF A 4-IN (10 CM)
 DS4330'SQUARE CONCRETE POST AND ABOUT 0.5 FT (15 CM) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1200 ***********************************************************************
 JW1200  DESIGNATION -  39 EOM
 JW1200  PID         -  JW1200
 JW1200  STATE/COUNTY-  MD/WASHINGTON
 JW1200  COUNTRY     -  US
 JW1200  USGS QUAD   -  BELLEGROVE (2016)
 JW1200
 JW1200                         *CURRENT SURVEY CONTROL
 JW1200  ______________________________________________________________________
 JW1200* NAD 83(1986) POSITION- 39 42 10.     (N) 078 18 00.     (W)   SCALED
 JW1200* NAVD 88 ORTHO HEIGHT -   338.930 (meters)     1111.97  (feet) ADJUSTED
 JW1200  ______________________________________________________________________
 JW1200  GEOID HEIGHT    -        -33.734 (meters)                     GEOID18
 JW1200  DYNAMIC HEIGHT  -        338.726 (meters)     1111.30  (feet) COMP
 JW1200  MODELED GRAVITY -    980,015.9   (mgal)                       NAVD 88
 JW1200
 JW1200  VERT ORDER      -  FIRST     CLASS II
 JW1200
 JW1200.The horizontal coordinates were scaled from a map and have
 JW1200.an estimated accuracy of +/- 6 seconds.
 JW1200
 JW1200.The orthometric height was determined by differential leveling and
 JW1200.adjusted by the NATIONAL GEODETIC SURVEY
 JW1200.in June 1991.
 JW1200
 JW1200.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1200.GEOID18 height accuracy estimate available here.
 JW1200
 JW1200.Click photographs - Photos may exist for this station.
 JW1200
 JW1200.The dynamic height is computed by dividing the NAVD 88
 JW1200.geopotential number by the normal gravity value computed on the
 JW1200.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1200.degrees latitude (g = 980.6199 gals.).
 JW1200
 JW1200.The modeled gravity was interpolated from observed gravity values.
 JW1200
 JW1200;                    North         East    Units  Estimated Accuracy
 JW1200;SPC MD       -   226,820.      288,510.      MT  (+/- 180 meters Scaled)
 JW1200
 JW1200_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD314982(NAD 83)
 JW1200
 JW1200                          SUPERSEDED SURVEY CONTROL
 JW1200
 JW1200.No superseded survey control is available for this station.
 JW1200
 JW1200_MARKER: DD = SURVEY DISK
 JW1200_SETTING: 66 = SET IN ROCK OUTCROP
 JW1200_STAMPING: 39 EOM 1113 1947
 JW1200_MARK LOGO: USGS
 JW1200_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1200+STABILITY: POSITION/ELEVATION WELL
 JW1200
 JW1200  HISTORY     - Date     Condition        Report By
 JW1200  HISTORY     - 1947     MONUMENTED       USGS
 JW1200  HISTORY     - 1983     GOOD             NGS
 JW1200
 JW1200                          STATION DESCRIPTION
 JW1200
 JW1200'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1200'14.0 KM (8.7 MI) WEST FROM HANCOCK.
 JW1200'5.6 KM (3.5 MI) WEST ALONG STATE HIGHWAY 144 FROM THE U.S. HIGHWAY 522
 JW1200'OVERPASS BRIDGE IN HANCOCK, THENCE 7.7 KM (4.8 MI) WEST ALONG U.S.
 JW1200'HIGHWAY 40, THENCE 0.6 KM (0.4 MI) WEST-SOUTHWEST ALONG OLD HIGHWAY 40
 JW1200'(SIDLING HILL ROAD) TO THE MARK ON THE LEFT, IN TOP OF THE SOUTHWEST
 JW1200'END OF A 3.0 METER (10 FT) BY 1.2 METER (4 FT) ROCK OUTCROP,
 JW1200'8.53 METERS (28.0 FT) SOUTH OF THE CENTERLINE OF OLD HIGHWAY 40,
 JW1200'29.0 METERS (95.0 FT) SOUTHEAST AND ACROSS THE ROAD FROM THE CENTER OF
 JW1200'THE JUNCTION OF MOUNTAIN ROAD.
 JW1200'THE MARK IS 0.45 METERS  E FROM A WITNESS POST.
 JW1200'THE MARK IS 0.30 M ABOVE OLD HIGHWAY 40.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1339 ***********************************************************************
 HV1339  DESIGNATION -  392 A WSSC
 HV1339  PID         -  HV1339
 HV1339  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1339  COUNTRY     -  US
 HV1339  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1339
 HV1339                         *CURRENT SURVEY CONTROL
 HV1339  ______________________________________________________________________
 HV1339* NAD 83(1986) POSITION- 38 54 57.     (N) 076 55 56.     (W)   SCALED
 HV1339* NAVD 88 ORTHO HEIGHT -     3.56  (+/-2cm)       11.7   (feet) VERTCON3
 HV1339  ______________________________________________________________________
 HV1339  GEOID HEIGHT    -        -32.243 (meters)                     GEOID18
 HV1339  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1339
 HV1339.The horizontal coordinates were scaled from a map and have
 HV1339.an estimated accuracy of +/- 6 seconds.
 HV1339
 HV1339.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1339.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1339
 HV1339.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1339.GEOID18 height accuracy estimate available here.
 HV1339
 HV1339.The vertical order pertains to the NGVD 29 superseded value.
 HV1339
 HV1339.Click photographs - Photos may exist for this station.
 HV1339
 HV1339;                    North         East    Units  Estimated Accuracy
 HV1339;SPC MD       -   138,670.      405,880.      MT  (+/- 180 meters Scaled)
 HV1339
 HV1339_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ324092(NAD 83)
 HV1339
 HV1339                          SUPERSEDED SURVEY CONTROL
 HV1339
 HV1339  NGVD 29 (11/26/84)    3.793  (m)           12.44   (f) ADJUSTED    2 0
 HV1339
 HV1339.Superseded values are not recommended for survey control.
 HV1339
 HV1339.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1339.See file dsdata.pdf to determine how the superseded data were derived.
 HV1339
 HV1339_MARKER: B = BOLT
 HV1339_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1339_SP_SET: CULVERT WING WALL
 HV1339_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1339
 HV1339  HISTORY     - Date     Condition        Report By
 HV1339  HISTORY     - UNK      MONUMENTED       WSSC
 HV1339  HISTORY     - 1944     GOOD             WSSC
 HV1339
 HV1339                          STATION DESCRIPTION
 HV1339
 HV1339'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1339'0.5 MI NE FROM MD DC LINE.
 HV1339'ON KENILWORTH AVENUE, ABOUT 200 FEET SOUTH OF THE PENNSYLVANIA
 HV1339'RAILROAD, AT A LARGE STONE CULVERT UNDER THE ROAD, ON THE EAST
 HV1339'SIDE OF THE ROAD, AND IN THE NORTHEAST STONE WING WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1338 ***********************************************************************
 HV1338  DESIGNATION -  392 WSSC
 HV1338  PID         -  HV1338
 HV1338  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1338  COUNTRY     -  US
 HV1338  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1338
 HV1338                         *CURRENT SURVEY CONTROL
 HV1338  ______________________________________________________________________
 HV1338* NAD 83(1986) POSITION- 38 54 57.     (N) 076 55 58.     (W)   SCALED
 HV1338* NAVD 88 ORTHO HEIGHT -     7.56  (+/-2cm)       24.8   (feet) VERTCON3
 HV1338  ______________________________________________________________________
 HV1338  GEOID HEIGHT    -        -32.242 (meters)                     GEOID18
 HV1338  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1338
 HV1338.The horizontal coordinates were scaled from a map and have
 HV1338.an estimated accuracy of +/- 6 seconds.
 HV1338
 HV1338.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1338.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1338
 HV1338.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1338.GEOID18 height accuracy estimate available here.
 HV1338
 HV1338.The vertical order pertains to the NGVD 29 superseded value.
 HV1338
 HV1338.Click photographs - Photos may exist for this station.
 HV1338
 HV1338;                    North         East    Units  Estimated Accuracy
 HV1338;SPC MD       -   138,670.      405,830.      MT  (+/- 180 meters Scaled)
 HV1338
 HV1338_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ324092(NAD 83)
 HV1338
 HV1338                          SUPERSEDED SURVEY CONTROL
 HV1338
 HV1338  NGVD 29 (11/26/84)    7.795  (m)           25.57   (f) ADJUSTED    2 0
 HV1338
 HV1338.Superseded values are not recommended for survey control.
 HV1338
 HV1338.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1338.See file dsdata.pdf to determine how the superseded data were derived.
 HV1338
 HV1338_MARKER: Q = CHISELED SQUARE
 HV1338_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1338_SP_SET: CULVERT COPING
 HV1338_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1338
 HV1338  HISTORY     - Date     Condition        Report By
 HV1338  HISTORY     - UNK      MONUMENTED       WSSC
 HV1338  HISTORY     - 1944     GOOD             WSSC
 HV1338
 HV1338                          STATION DESCRIPTION
 HV1338
 HV1338'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1338'0.5 MI NE FROM MD DC LINE.
 HV1338'ON KENILWORTH AVENUE, ABOUT 200 FEET SOUTH OF THE PENNSYLVANIA
 HV1338'RAILROAD, AT A LARGE STONE CULVERT UNDER THE ROAD, ON THE
 HV1338'WEST SIDE OF THE ROAD, AND ON THE SOUTH END OF THE STONE COPING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2091 ***********************************************************************
 HV2091  DESIGNATION -  39226 NPS
 HV2091  PID         -  HV2091
 HV2091  STATE/COUNTY-  MD/MONTGOMERY
 HV2091  COUNTRY     -  US
 HV2091  USGS QUAD   -  FALLS CHURCH (2019)
 HV2091
 HV2091                         *CURRENT SURVEY CONTROL
 HV2091  ______________________________________________________________________
 HV2091* NAD 83(1986) POSITION- 38 58 20.     (N) 077 10 52.     (W)   SCALED
 HV2091* NAVD 88 ORTHO HEIGHT -    35.53  (+/-2cm)      116.6   (feet) VERTCON3
 HV2091  ______________________________________________________________________
 HV2091  GEOID HEIGHT    -        -31.792 (meters)                     GEOID18
 HV2091  VERT ORDER      -  ? (See Below)
 HV2091
 HV2091.The horizontal coordinates were scaled from a map and have
 HV2091.an estimated accuracy of +/- 6 seconds.
 HV2091
 HV2091.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2091.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2091
 HV2091.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2091.GEOID18 height accuracy estimate available here.
 HV2091
 HV2091.The vertical order pertains to the NGVD 29 superseded value.
 HV2091
 HV2091.Click photographs - Photos may exist for this station.
 HV2091
 HV2091;                    North         East    Units  Estimated Accuracy
 HV2091;SPC MD       -   144,940.      384,310.      MT  (+/- 180 meters Scaled)
 HV2091
 HV2091_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ110159(NAD 83)
 HV2091
 HV2091                          SUPERSEDED SURVEY CONTROL
 HV2091
 HV2091  NGVD 29 (11/26/84)   35.753  (m)          117.30   (f) ADJUSTED       
 HV2091
 HV2091.Superseded values are not recommended for survey control.
 HV2091
 HV2091.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2091.See file dsdata.pdf to determine how the superseded data were derived.
 HV2091
 HV2091_MARKER: DD = SURVEY DISK
 HV2091_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2091_SP_SET: STONE LOCK WALL
 HV2091_STAMPING: 39226
 HV2091_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2091
 HV2091  HISTORY     - Date     Condition        Report By
 HV2091  HISTORY     - UNK      MONUMENTED       NPS
 HV2091  HISTORY     - 1930     GOOD             PBPP
 HV2091  HISTORY     - 20001106 GOOD             USPSQD
 HV2091
 HV2091                          STATION DESCRIPTION
 HV2091
 HV2091'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2091'5 MI NW FROM DALECARLIA.
 HV2091'IN MONTGOMERY COUNTY, MARYLAND, 5.0 MILES NORTHWEST ALONG MAC ARTHUR
 HV2091'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2091'D.C., THENCE 0.3 MILE SOUTH TO THE ABANDONED CHESAPEAKE AND OHIO
 HV2091'CANAL, ON THE SOUTH BANK OF THE OLD CANAL, AT LOCK 14, 40 FEET
 HV2091'WEST-NORTHWEST OF THE NEAR CORNER OF AN OLD FOUNDATION, 15
 HV2091'FEET NORTH OF THE CENTERLINE OF THE TOWPATH, 12 FEET WEST OF THE
 HV2091'WEST GATE OF THE LOCK, IN THE TOP OF THE SOUTH STONE LOCK-WALL,
 HV2091'AND 1 FOOT SOUTH OF THE NORTH EDGE.  A NATIONAL PARK SERVICE
 HV2091'STANDARD DISK, STAMPED 39226.
 HV2091
 HV2091                          STATION RECOVERY (2000)
 HV2091
 HV2091'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2091'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6059 ***********************************************************************
 JV6059  DESIGNATION -  3940001
 JV6059  PID         -  JV6059
 JV6059  STATE/COUNTY-  MD/BALTIMORE
 JV6059  COUNTRY     -  US
 JV6059  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6059
 JV6059                         *CURRENT SURVEY CONTROL
 JV6059  ______________________________________________________________________
 JV6059* NAD 83(1991) POSITION- 39 20 59.39466(N) 076 51 34.55222(W)   NO CHECK
 JV6059* NAVD 88 ORTHO HEIGHT -   152.    (meters)      499.    (feet) VERTCON3
 JV6059  ______________________________________________________________________
 JV6059  GEOID HEIGHT    -        -32.086 (meters)                     GEOID18
 JV6059  LAPLACE CORR    -         -2.53  (seconds)                    DEFLEC18
 JV6059  HORZ ORDER      -  THIRD
 JV6059
 JV6059.The horizontal coordinates were established by classical geodetic methods
 JV6059.and adjusted by the National Geodetic Survey in January 1992.
 JV6059
 JV6059.No horizontal observational check was made to the station.
 JV6059
 JV6059.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6059.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6059
 JV6059.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6059.GEOID18 height accuracy estimate available here.
 JV6059
 JV6059.Click photographs - Photos may exist for this station.
 JV6059
 JV6059.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6059
 JV6059. The following values were computed from the NAD 83(1991) position.
 JV6059
 JV6059;                    North         East     Units Scale Factor Converg.
 JV6059;SPC MD       -   186,852.075   412,102.217   MT  0.99998401   +0 05 17.2
 JV6059;SPC MD       -   613,030.52  1,352,038.69   sFT  0.99998401   +0 05 17.2
 JV6059;UTM  18      - 4,357,248.024   339,764.529   MT  0.99991613   -1 10 45.6
 JV6059
 JV6059!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6059!SPC MD       -   0.99998122  x   0.99998401  =   0.99996523
 JV6059!UTM  18      -   0.99998122  x   0.99991613  =   0.99989735
 JV6059
 JV6059:                Primary Azimuth Mark                     Grid Az
 JV6059:SPC MD       -  BA 79 W 05 AZ MK 2                       040 27 17.3
 JV6059:UTM  18      -  BA 79 W 05 AZ MK 2                       041 43 20.1
 JV6059
 JV6059_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3976457248(NAD 83)
 JV6059
 JV6059|---------------------------------------------------------------------|
 JV6059| PID    Reference Object                     Distance      Geod. Az  |
 JV6059|                                                           dddmmss.s |
 JV6059| JV6058 BA 79 W 05 AZ MK 2                  APPROX. 0.7 KM 0403234.5 |
 JV6059| JV6043 BA 79 W 05                          363.646 METERS 14904     |
 JV6059|---------------------------------------------------------------------|
 JV6059
 JV6059                          SUPERSEDED SURVEY CONTROL
 JV6059
 JV6059  NAD 83(1986)-  39 20 59.39232(N)    076 51 34.56007(W) AD(       ) 3
 JV6059  NAD 27      -  39 20 59.01580(N)    076 51 35.63536(W) AD(       ) 3
 JV6059  NGVD 29 (07/19/86)  152.     (m)          499.     (f) VERT ANG       
 JV6059
 JV6059.Superseded values are not recommended for survey control.
 JV6059
 JV6059.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6059.See file dsdata.pdf to determine how the superseded data were derived.
 JV6059
 JV6059_MARKER: DD = SURVEY DISK
 JV6059_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JV6059_STAMPING: 3940001
 JV6059_MARK LOGO: MD-027
 JV6059_PROJECTION: RECESSED 20 CENTIMETERS
 JV6059_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6059
 JV6059  HISTORY     - Date     Condition        Report By
 JV6059  HISTORY     - 1979     MONUMENTED       MD-027
 JV6059  HISTORY     - 1979     GOOD             NGS
 JV6059
 JV6059                          STATION DESCRIPTION
 JV6059
 JV6059'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 JV6059'THE MONUMENT IS LOCATED 13-3/4 MILES W-NW OF BALTIMORE, 3-3/4 MILES
 JV6059'W-SW OF RANDALSTOWN AND ABOUT 2 MILES NORTH OF WOODSTOCK.
 JV6059'
 JV6059'TO REACH FROM THE POST OFFICE IN WOODSTOCK, GO NORTHEAST ON
 JV6059'WOODSTOCK ROAD FOR 0.65 MILE TO A BRIDGE OVER THE PATAPSCO
 JV6059'RIVER.  CROSS THE BRIDGE AND CONTINUE NE FOR 1.2 MILES TO A SIDE
 JV6059'ROAD LEFT.  TURN LEFT AND GO NORTH ON HERNWOOD ROAD FOR 0.6 MILE
 JV6059'TO A SIDE ROAD LEFT.  TURN LEFT AND GO WEST ON A BLADED ROAD FOR
 JV6059'0.4 MILE TO MR. AUSTIN V. CULPS RESIDENCE ON THE RIGHT AND THE
 JV6059'STATION JUST NORTH OF MR. CULPS HOUSE.
 JV6059'
 JV6059'THE STATION IS A HOWARD COUNTY MONUMENT STAMPED 3940001, SET IN
 JV6059'THE TOP OF A 4-INCH SQUARE CONCRETE POST WHICH IS 8-INCHES BELOW THE
 JV6059'SURFACE.  IT IS 153 FEET NORTH OF THE CENTER OF THE BLADED ROAD,
 JV6059'75 FEET EAST OF A POINT WHERE FENCES CROSS AND 2.5 FEET NORTH OF
 JV6059'A WIRE FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1841 ***********************************************************************
 JV1841  DESIGNATION -  398
 JV1841  PID         -  JV1841
 JV1841  STATE/COUNTY-  MD/CARROLL
 JV1841  COUNTRY     -  US
 JV1841  USGS QUAD   -  UNION BRIDGE (2016)
 JV1841
 JV1841                         *CURRENT SURVEY CONTROL
 JV1841  ______________________________________________________________________
 JV1841* NAD 83(1986) POSITION- 39 34 41.     (N) 077 11 53.     (W)   SCALED
 JV1841* NAVD 88 ORTHO HEIGHT -   121.036 (meters)      397.10  (feet) ADJUSTED
 JV1841  ______________________________________________________________________
 JV1841  GEOID HEIGHT    -        -32.703 (meters)                     GEOID18
 JV1841  DYNAMIC HEIGHT  -        120.971 (meters)      396.89  (feet) COMP
 JV1841  MODELED GRAVITY -    980,093.3   (mgal)                       NAVD 88
 JV1841
 JV1841  VERT ORDER      -  SECOND    CLASS 0
 JV1841
 JV1841.The horizontal coordinates were scaled from a map and have
 JV1841.an estimated accuracy of +/- 6 seconds.
 JV1841
 JV1841.The orthometric height was determined by differential leveling and
 JV1841.adjusted by the NATIONAL GEODETIC SURVEY
 JV1841.in June 1991.
 JV1841
 JV1841.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1841.GEOID18 height accuracy estimate available here.
 JV1841
 JV1841.Click photographs - Photos may exist for this station.
 JV1841
 JV1841.The dynamic height is computed by dividing the NAVD 88
 JV1841.geopotential number by the normal gravity value computed on the
 JV1841.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1841.degrees latitude (g = 980.6199 gals.).
 JV1841
 JV1841.The modeled gravity was interpolated from observed gravity values.
 JV1841
 JV1841;                    North         East    Units  Estimated Accuracy
 JV1841;SPC MD       -   212,200.      382,980.      MT  (+/- 180 meters Scaled)
 JV1841
 JV1841_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ112832(NAD 83)
 JV1841
 JV1841                          SUPERSEDED SURVEY CONTROL
 JV1841
 JV1841  NGVD 29 (11/26/84)  121.244  (m)          397.78   (f) ADJUSTED    2 0
 JV1841
 JV1841.Superseded values are not recommended for survey control.
 JV1841
 JV1841.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1841.See file dsdata.pdf to determine how the superseded data were derived.
 JV1841
 JV1841_MARKER: DB = BENCH MARK DISK
 JV1841_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1841_SP_SET: UNDERPASS
 JV1841_STAMPING: 398
 JV1841_MARK LOGO: USGS
 JV1841_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1841
 JV1841  HISTORY     - Date     Condition        Report By
 JV1841  HISTORY     - UNK      MONUMENTED       USGS
 JV1841  HISTORY     - 1935     GOOD             CGS
 JV1841
 JV1841                          STATION DESCRIPTION
 JV1841
 JV1841'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1841'1.5 MI E FROM MIDDLEBURG.
 JV1841'ABOUT 1.5 MILES EAST ALONG THE WESTERN MARYLAND RAILWAY FROM
 JV1841'THE STATION AT MIDDLEBURG, CARROLL COUNTY, ABOUT 382 FEET
 JV1841'WEST OF BLOCK SIGNAL A 46.6, AT A PRIVATE FARM-ROAD UNDERPASS,
 JV1841'IN THE TOP OF THE NORTH SIDE OF THE EAST SEAT, AND 10 FEET
 JV1841'NORTH OF THE CENTER LINE OF THE TRACK.  A UNITED STATES
 JV1841'GEOLOGICAL SURVEY STANDARD DISK, STAMPED 398.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0417 ***********************************************************************
 HV0417  DESIGNATION -  4
 HV0417  PID         -  HV0417
 HV0417  STATE/COUNTY-  MD/ST MARYS
 HV0417  COUNTRY     -  US
 HV0417  USGS QUAD   -  POINT LOOKOUT (2016)
 HV0417
 HV0417                         *CURRENT SURVEY CONTROL
 HV0417  ______________________________________________________________________
 HV0417* NAD 83(1986) POSITION- 38 02 45.     (N) 076 19 19.     (W)   SCALED
 HV0417* NAVD 88 ORTHO HEIGHT -     2.049 (meters)        6.72  (feet) ADJUSTED
 HV0417  ______________________________________________________________________
 HV0417  GEOID HEIGHT    -        -35.326 (meters)                     GEOID18
 HV0417  DYNAMIC HEIGHT  -          2.047 (meters)        6.72  (feet) COMP
 HV0417  MODELED GRAVITY -    979,970.1   (mgal)                       NAVD 88
 HV0417
 HV0417  VERT ORDER      -  FIRST     CLASS II
 HV0417
 HV0417.The horizontal coordinates were scaled from a map and have
 HV0417.an estimated accuracy of +/- 6 seconds.
 HV0417
 HV0417.The orthometric height was determined by differential leveling and
 HV0417.adjusted by the NATIONAL GEODETIC SURVEY
 HV0417.in June 1991.
 HV0417
 HV0417.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0417.GEOID18 height accuracy estimate available here.
 HV0417
 HV0417.Click photographs - Photos may exist for this station.
 HV0417
 HV0417.The dynamic height is computed by dividing the NAVD 88
 HV0417.geopotential number by the normal gravity value computed on the
 HV0417.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0417.degrees latitude (g = 980.6199 gals.).
 HV0417
 HV0417.The modeled gravity was interpolated from observed gravity values.
 HV0417
 HV0417;                    North         East    Units  Estimated Accuracy
 HV0417;SPC MD       -    42,310.      459,520.      MT  (+/- 180 meters Scaled)
 HV0417
 HV0417_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH840117(NAD 83)
 HV0417
 HV0417                          SUPERSEDED SURVEY CONTROL
 HV0417
 HV0417  NGVD 29 (11/26/84)    2.342  (m)            7.68   (f) ADJUSTED    1 2
 HV0417
 HV0417.Superseded values are not recommended for survey control.
 HV0417
 HV0417.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0417.See file dsdata.pdf to determine how the superseded data were derived.
 HV0417
 HV0417_MARKER: DD = SURVEY DISK
 HV0417_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV0417_MARK LOGO: CGS+SS
 HV0417_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0417
 HV0417  HISTORY     - Date     Condition        Report By
 HV0417  HISTORY     - 1934     MONUMENTED       MDGS
 HV0417  HISTORY     - 1955     SEE DESCRIPTION  CGS
 HV0417
 HV0417                          STATION DESCRIPTION
 HV0417
 HV0417'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 HV0417'AT POINT LOOKOUT.
 HV0417'AT POINT LOOKOUT, SAINT MARYS COUNTY, AT THE WEST END OF THIRTEENTH
 HV0417'STREET, 1 BLOCK WEST OF STATE HIGHWAY 5, 19 FEET SOUTH OF THE
 HV0417'CENTER LINE OF THIRTEENTH STREET, ABOUT 147 FEET SOUTH OF THE
 HV0417'SOUTHWEST CORNER OF THE SNIDER HOUSE, AND 1 FOOT NORTH OF A
 HV0417'WHITE WOODEN POST STENCILED U.S.B.M.  A STATE SURVEY STANDARD
 HV0417'DISK, SET IN THE TOP OF A CONCRETE POST.  NOTE-- HURRICANE
 HV0417'CONNIE PILED SEVERAL FEET OF SAND AT THIS LOCATION.  AUG. 1955
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7293 ***********************************************************************
 HV7293  DESIGNATION -  4
 HV7293  PID         -  HV7293
 HV7293  STATE/COUNTY-  MD/CALVERT
 HV7293  COUNTRY     -  US
 HV7293  USGS QUAD   -  NORTH BEACH (2016)
 HV7293
 HV7293                         *CURRENT SURVEY CONTROL
 HV7293  ______________________________________________________________________
 HV7293* NAD 83(1993) POSITION- 38 39 22.95253(N) 076 31 40.38675(W)   ADJUSTED
 HV7293* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 HV7293  ______________________________________________________________________
 HV7293  GEOID HEIGHT    -        -33.771 (meters)                     GEOID18
 HV7293  LAPLACE CORR    -         -5.48  (seconds)                    DEFLEC18
 HV7293  HORZ ORDER      -  SECOND
 HV7293
 HV7293.The horizontal coordinates were established by classical geodetic methods
 HV7293.and adjusted by the National Geodetic Survey in November 1994.
 HV7293
 HV7293.The orthometric height was scaled from a topographic map.
 HV7293
 HV7293.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7293.GEOID18 height accuracy estimate available here.
 HV7293
 HV7293.Click photographs - Photos may exist for this station.
 HV7293
 HV7293.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7293
 HV7293. The following values were computed from the NAD 83(1993) position.
 HV7293
 HV7293;                    North         East     Units Scale Factor Converg.
 HV7293;SPC MD       -   109,967.820   441,092.740   MT  0.99995714   +0 17 46.7
 HV7293;SPC MD       -   360,786.09  1,447,151.76   sFT  0.99995714   +0 17 46.7
 HV7293;UTM  18      - 4,279,752.733   367,056.703   MT  0.99981765   -0 57 16.3
 HV7293
 HV7293!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7293!SPC MD       -   1.00000000  x   0.99995714  =   0.99995714
 HV7293!UTM  18      -   1.00000000  x   0.99981765  =   0.99981765
 HV7293
 HV7293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6705679752(NAD 83)
 HV7293
 HV7293                          SUPERSEDED SURVEY CONTROL
 HV7293
 HV7293  NAD 83(1991)-  38 39 22.95252(N)    076 31 40.38675(W) AD(       ) 2
 HV7293  NAD 83(1986)-  38 39 22.95064(N)    076 31 40.40044(W) AD(       ) 2
 HV7293  NAD 27      -  38 39 22.51000(N)    076 31 41.56200(W) AD(       ) 2
 HV7293
 HV7293.Superseded values are not recommended for survey control.
 HV7293
 HV7293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7293.See file dsdata.pdf to determine how the superseded data were derived.
 HV7293
 HV7293_MARKER: DD = SURVEY DISK
 HV7293_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HV7293_SP_SET: INSTRUMENT PLATFORM
 HV7293_STAMPING: NO 4 1944
 HV7293_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7293+STABILITY: SURFACE MOTION
 HV7293
 HV7293  HISTORY     - Date     Condition        Report By
 HV7293  HISTORY     - 1944     MONUMENTED       CGS
 HV7293  HISTORY     - 1973     GOOD             NGS
 HV7293
 HV7293                          STATION DESCRIPTION
 HV7293
 HV7293'DESCRIBED BY COAST AND GEODETIC SURVEY 1944 (TBR)
 HV7293'STATION IS A BRONZE DISK STAMPED NO 4 1944.  IT IS ON INSTRUMENT
 HV7293'PLATFORM E OF BUILDING 3 AT NAVAL RESEARCH LABORATORY, CHESAPEAKE
 HV7293'BEACH.
 HV7293'
 HV7293'HALF-TIDE LEVEL (APPROXIMATE SEA LEVEL) ELEVATION 103.42 FEET.
 HV7293
 HV7293                          STATION RECOVERY (1973)
 HV7293
 HV7293'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 HV7293'THE STATION WAS RECOVERED AS DESCRIBED BY T.B.R. IN 1944 AND
 HV7293'FOUND IN GOOD CONDITION.
 HV7293'
 HV7293'THIS STATION WAS USED FOR HORIZONTAL CHECK ANGLES ONLY AND WAS NOT
 HV7293'OCCUPYED AT THIS DATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3587 ***********************************************************************
 JU3587  DESIGNATION -  4
 JU3587  PID         -  JU3587
 JU3587  STATE/COUNTY-  MD/CECIL
 JU3587  COUNTRY     -  US
 JU3587  USGS QUAD   -  EARLEVILLE (2016)
 JU3587
 JU3587                         *CURRENT SURVEY CONTROL
 JU3587  ______________________________________________________________________
 JU3587* NAD 83(1991) POSITION- 39 29 51.94347(N) 075 55 14.32423(W)   ADJUSTED
 JU3587* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3587  ______________________________________________________________________
 JU3587  GEOID HEIGHT    -        -33.325 (meters)                     GEOID18
 JU3587  LAPLACE CORR    -         -0.85  (seconds)                    DEFLEC18
 JU3587  HORZ ORDER      -  THIRD
 JU3587
 JU3587.The horizontal coordinates were established by classical geodetic methods
 JU3587.and adjusted by the National Geodetic Survey in January 1992.
 JU3587
 JU3587.The orthometric height was scaled from a topographic map.
 JU3587
 JU3587.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3587.GEOID18 height accuracy estimate available here.
 JU3587
 JU3587.Click photographs - Photos may exist for this station.
 JU3587
 JU3587.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3587
 JU3587. The following values were computed from the NAD 83(1991) position.
 JU3587
 JU3587;                    North         East     Units Scale Factor Converg.
 JU3587;SPC MD       -   203,815.302   492,840.583   MT  1.00000870   +0 40 38.8
 JU3587;SPC MD       -   668,684.04  1,616,927.81   sFT  1.00000870   +0 40 38.8
 JU3587;UTM  18      - 4,372,420.674   420,840.601   MT  0.99967715   -0 35 08.2
 JU3587
 JU3587!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3587!SPC MD       -   1.00000511  x   1.00000870  =   1.00001381
 JU3587!UTM  18      -   1.00000511  x   0.99967715  =   0.99968226
 JU3587
 JU3587:                Primary Azimuth Mark                     Grid Az
 JU3587:SPC MD       -  E                                        324 01 19.9
 JU3587:UTM  18      -  E                                        325 17 06.9
 JU3587
 JU3587_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2084072420(NAD 83)
 JU3587
 JU3587|---------------------------------------------------------------------|
 JU3587| PID    Reference Object                     Distance      Geod. Az  |
 JU3587|                                                           dddmmss.s |
 JU3587| JU3589 GROVE NECK CHAN N FRONT RNG LT      APPROX. 1.7 KM 2503743.4 |
 JU3587| JU3581 GROVE NECK CHAN N REAR RNG LT       APPROX. 1.0 KM 2751237.2 |
 JU3587| JU3952 TOWN POINT CHAN W REAR RNG LT       APPROX. 1.2 KM 2922959.3 |
 JU3587| JU3953 TOWN POINT CHAN W FRONT RNG LT      APPROX. 1.0 KM 2993358.7 |
 JU3587| JU3938 E                                   APPROX. 1.0 KM 3244158.7 |
 JU3587|---------------------------------------------------------------------|
 JU3587
 JU3587                          SUPERSEDED SURVEY CONTROL
 JU3587
 JU3587  NAD 83(1986)-  39 29 51.93605(N)    075 55 14.33128(W) AD(       ) 3
 JU3587  NAD 27      -  39 29 51.53800(N)    075 55 15.54600(W) AD(       ) 3
 JU3587
 JU3587.Superseded values are not recommended for survey control.
 JU3587
 JU3587.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3587.See file dsdata.pdf to determine how the superseded data were derived.
 JU3587
 JU3587_MARKER: X = CHISELED CROSS
 JU3587_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JU3587_SP_SET: JETTY
 JU3587_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3587+STABILITY: SURFACE MOTION
 JU3587
 JU3587  HISTORY     - Date     Condition        Report By
 JU3587  HISTORY     - 1937     MONUMENTED       USACE
 JU3587  HISTORY     - 1938     GOOD             CGS
 JU3587
 JU3587                          STATION DESCRIPTION
 JU3587
 JU3587'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3587'LOCATED ON THE S SIDE OF ELK RIVER ON TOWN POINT NECK ABOUT 0.4
 JU3587'MILE SW OF TOWN POINT WHARF.  IT IS 4.1 METERS INSHORE FROM THE
 JU3587'END OF A SMALL CONCRETE PIER WHICH EXTENDS 9.6 METERS OUT FROM
 JU3587'A STONE BULKHEAD.  THE STATION IS MARKED BY A CROSS CUT IN THE
 JU3587'CONCRETE AND IS 1 FOOT ABOVE HIGH WATER.
 JU3587
 JU3587                          STATION RECOVERY (1938)
 JU3587
 JU3587'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3587'STATION MARK RECOVERED IN GOOD CONDITION.  STATION IS LOCATED
 JU3587'APPROXIMATELY 6-1/2 MILES SW OF CHESAPEAKE CITY ON THE E SIDE OF
 JU3587'ELK RIVER ON TOWN POINT NECK ON THE FIRST PROMINENT POINT N OF
 JU3587'TOWN POINT.
 JU3587'
 JU3587'STATION MARK IS A CROSS CUT INTO THE TOP OF THE SOUTHERLY OF TWO
 JU3587'CONCRETE JETTIES, 40 METERS NW OF A LARGE STUCCO HOUSE, 4.1 METERS
 JU3587'FROM THE OFFSHORE END OF THE JETTY AND 9.6 METERS OUT FROM A
 JU3587'STONE BULKHEAD PROTECTING A 4-FOOT BLUFF AROUND THE POINT.
 JU3587'
 JU3587'TO REACH THE STATION FROM THE CANAL BRIDGE IN CHESAPEAKE CITY
 JU3587'FOLLOW U.S. HIGHWAY 213 S 3.8 MILES.  TAKE RIGHT FORK AT SIGN
 JU3587'TOWN POINT.  GO 3.3 MILES, TURN RIGHT AND TAKE LEFT FORK GO 0.4
 JU3587'MILE TO SIGN TOWN POINT FARM.  TURN LEFT FOR 0.2 MILE, TURN RIGHT
 JU3587'AND FOLLOW LANE 0.2 MILE TO GARAGE AND STUCCO HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7829 ***********************************************************************
 DR7829  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7829  DESIGNATION -  4
 DR7829  PID         -  DR7829
 DR7829  STATE/COUNTY-  MD/QUEEN ANNES
 DR7829  COUNTRY     -  US
 DR7829  USGS QUAD   -  KENT ISLAND (2016)
 DR7829
 DR7829                         *CURRENT SURVEY CONTROL
 DR7829  ______________________________________________________________________
 DR7829* NAD 83(2011) POSITION- 38 56 00.16953(N) 076 21 15.43993(W)   ADJUSTED
 DR7829* NAD 83(2011) ELLIP HT-   -29.184 (meters)        (02/02/22)   ADJUSTED
 DR7829* NAD 83(2011) EPOCH   -  2010.00
 DR7829* NAVD 88 ORTHO HEIGHT -     4.44  (meters)       14.6   (feet) GPS OBS
 DR7829  ______________________________________________________________________
 DR7829  GEOID HEIGHT    -        -33.635 (meters)                     GEOID18
 DR7829  NAD 83(2011) X  -  1,172,027.556 (meters)                     COMP
 DR7829  NAD 83(2011) Y  - -4,827,725.576 (meters)                     COMP
 DR7829  NAD 83(2011) Z  -  3,986,548.392 (meters)                     COMP
 DR7829  LAPLACE CORR    -         -3.27  (seconds)                    DEFLEC18
 DR7829
 DR7829  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7829  Standards:
 DR7829         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7829            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7829  -------------------------------------------------------------------
 DR7829  NETWORK    0.73   1.65           0.32   0.27   0.84     -0.11518083
 DR7829  -------------------------------------------------------------------
 DR7829  Click here for local accuracies and other accuracy information.
 DR7829
 DR7829.The horizontal coordinates were established by GPS observations
 DR7829.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7829
 DR7829.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7829.been affixed to the stable North American tectonic plate. See 
 DR7829.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7829
 DR7829.The horizontal coordinates are valid at the epoch date displayed above
 DR7829.which is a decimal equivalence of Year/Month/Day.
 DR7829
 DR7829.The orthometric height was determined by GPS observations and a
 DR7829.high-resolution geoid model using precise GPS observation and
 DR7829.processing techniques.
 DR7829
 DR7829.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7829.GEOID18 height accuracy estimate available here.
 DR7829
 DR7829.Click photographs - Photos may exist for this station.
 DR7829
 DR7829.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7829
 DR7829.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7829
 DR7829.The ellipsoidal height was determined by GPS observations
 DR7829.and is referenced to NAD 83.
 DR7829
 DR7829. The following values were computed from the NAD 83(2011) position.
 DR7829
 DR7829;                    North         East     Units Scale Factor Converg.
 DR7829;SPC MD       -   140,808.807   455,984.802   MT  0.99995035   +0 24 19.0
 DR7829;SPC MD       -   461,970.23  1,496,010.14   sFT  0.99995035   +0 24 19.0
 DR7829;UTM  18      - 4,310,255.655   382,617.539   MT  0.99976966   -0 51 04.2
 DR7829
 DR7829!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7829!SPC MD       -   1.00000458  x   0.99995035  =   0.99995493
 DR7829!UTM  18      -   1.00000458  x   0.99976966  =   0.99977424
 DR7829
 DR7829_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8261710255(NAD 83)
 DR7829
 DR7829                          SUPERSEDED SURVEY CONTROL
 DR7829
 DR7829.No superseded survey control is available for this station.
 DR7829
 DR7829_MARKER: DD = SURVEY DISK
 DR7829_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7829_STAMPING: 4
 DR7829_MARK LOGO: MD-035
 DR7829_PROJECTION: RECESSED 3 CENTIMETERS
 DR7829_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7829+STABILITY: SURFACE MOTION
 DR7829_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7829+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7829
 DR7829  HISTORY     - Date     Condition        Report By
 DR7829  HISTORY     - UNK      MONUMENTED       MD-035
 DR7829  HISTORY     - 20210309 GOOD             MDSHA
 DR7829
 DR7829                          STATION DESCRIPTION
 DR7829
 DR7829'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7829'THE MARK IS LOCATED ABOUT 4.1 MI (6.6 KM) WEST-SOUTHWEST OF DOMINION,
 DR7829'3.9 MI (6.3 KM) SOUTH-SOUTHWEST OF STEVENSVILLE AND 3.7 MI (6.0 KM)
 DR7829'NORTH-NORTHWEST OF ROMANCOKE.
 DR7829'
 DR7829'TO REACH FROM THE US 5O/MD ROUTE 8 INTERCHANGE, GO SOUTH ON MD ROUTE 8
 DR7829'FOR 3.8 MI (6.1 KM) TO INTERSECTION OF BALTIMORE DRIVE AND THE MARK ON
 DR7829'THE RIGHT IN THE SOUTHWEST ANGLE.
 DR7829'
 DR7829'THE MARK IS 99.8 FT (30.4 M) SOUTHEAST OF AN ACE/DP POLE NUMBERED
 DR7829'25511-14058, 44.0 FT (13.4 M) WEST OF THE CENTERLINE OF STATE ROUTE 8,
 DR7829'35.5 FT (10.8 M) SOUTH OF THE CENTERLINE OF BALTIMORE DR, 23.2 FT (7.1
 DR7829'M) EAST OF THE CENTERLINE OF A PAVED BIKE TRAIL, 13.7 FT (4.2 M)
 DR7829'SOUTHWEST OF A METAL POLE WITH A STOP SIGN AND SET IN THE TOP OF A
 DR7829'12-IN (30 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2163 ***********************************************************************
 HU2163  DESIGNATION -  4 KEM
 HU2163  PID         -  HU2163
 HU2163  STATE/COUNTY-  MD/WICOMICO
 HU2163  COUNTRY     -  US
 HU2163  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2163
 HU2163                         *CURRENT SURVEY CONTROL
 HU2163  ______________________________________________________________________
 HU2163* NAD 83(1986) POSITION- 38 23 11.4    (N) 075 47 51.0    (W)   HD_HELD2
 HU2163* NAVD 88 ORTHO HEIGHT -     2.585 (meters)        8.48  (feet) ADJUSTED
 HU2163  ______________________________________________________________________
 HU2163  GEOID HEIGHT    -        -35.639 (meters)                     GEOID18
 HU2163  DYNAMIC HEIGHT  -          2.583 (meters)        8.47  (feet) COMP
 HU2163  MODELED GRAVITY -    980,007.8   (mgal)                       NAVD 88
 HU2163
 HU2163  VERT ORDER      -  SECOND    CLASS I
 HU2163
 HU2163.The horizontal coordinates were established by autonomous hand held GPS
 HU2163.observations and have an estimated accuracy of +/- 10 meters.
 HU2163
 HU2163.The orthometric height was determined by differential leveling and
 HU2163.adjusted by the NATIONAL GEODETIC SURVEY
 HU2163.in June 1991.
 HU2163
 HU2163.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2163.GEOID18 height accuracy estimate available here.
 HU2163
 HU2163.Click photographs - Photos may exist for this station.
 HU2163
 HU2163.The dynamic height is computed by dividing the NAVD 88
 HU2163.geopotential number by the normal gravity value computed on the
 HU2163.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2163.degrees latitude (g = 980.6199 gals.).
 HU2163
 HU2163.The modeled gravity was interpolated from observed gravity values.
 HU2163
 HU2163;                    North         East    Units  Estimated Accuracy
 HU2163;SPC MD       -    80,596.      505,057.      MT  (+/- 10 meters HH2 GPS)
 HU2163
 HU2163_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3035049000(NAD 83)
 HU2163
 HU2163                          SUPERSEDED SURVEY CONTROL
 HU2163
 HU2163  NGVD 29 (06/12/91)    2.834  (m)            9.30   (f) ADJUSTED    2 1
 HU2163
 HU2163.Superseded values are not recommended for survey control.
 HU2163
 HU2163.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2163.See file dsdata.pdf to determine how the superseded data were derived.
 HU2163
 HU2163_MARKER: DB = BENCH MARK DISK
 HU2163_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2163_STAMPING: 4 KEM 1977
 HU2163_MARK LOGO: USGS
 HU2163_PROJECTION: FLUSH
 HU2163_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2163_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2163+STABILITY: SURFACE MOTION
 HU2163_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2163+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2018
 HU2163
 HU2163  HISTORY     - Date     Condition        Report By
 HU2163  HISTORY     - 1977     MONUMENTED       USGS
 HU2163  HISTORY     - 19900308 GOOD             NGS
 HU2163  HISTORY     - 20180718 GOOD             PROFLN
 HU2163
 HU2163                          STATION DESCRIPTION
 HU2163
 HU2163'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2163'5.4 KM (3.36 MI) WESTERLY ALONG CHERRY WALK ROAD FROM ITS JUNCTION
 HU2163'WITH STATE HIGHWAY 347 IN QUANTICO, ON THE OUTSIDE OF A CURVE, 12.2 M
 HU2163'(40.03 FT) NORTHEAST OF AND LEVEL WITH THE ROAD CENTER, 0.5 M (1.64
 HU2163'FT) SOUTH OF UTILITY POLE NUMBER 4, 0.2 M (0.66 FT) NORTH OF A
 HU2163'WITNESS POST, AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE
 HU2163'GROUND SURFACE.
 HU2163
 HU2163                          STATION RECOVERY (2018)
 HU2163
 HU2163'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2018 (JRO)
 HU2163'THE MARK IS 2 FT (0.6 M) TOWARD THE ROAD FROM POLE 712 151, BETWEEN
 HU2163'THE WITNESS POST AND TELEPHONE PEDESTAL 49, 3 FT (0.9 M) SOUTHEAST OF
 HU2163'THE PEDESTAL, 1 FT (0.3 M) NORTHWEST OF THE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4041 ***********************************************************************
 AE4041  DESIGNATION -  4 SKS
 AE4041  PID         -  AE4041
 AE4041  STATE/COUNTY-  MD/BALTIMORE
 AE4041  COUNTRY     -  US
 AE4041  USGS QUAD   -  MIDDLE RIVER (2016)
 AE4041
 AE4041                         *CURRENT SURVEY CONTROL
 AE4041  ______________________________________________________________________
 AE4041* NAD 83(1986) POSITION- 39 20 07.4    (N) 076 24 38.6    (W)   HD_HELD2
 AE4041* NAVD 88 ORTHO HEIGHT -     1.871 (meters)        6.14  (feet) ADJUSTED
 AE4041  ______________________________________________________________________
 AE4041  GEOID HEIGHT    -        -33.037 (meters)                     GEOID18
 AE4041  DYNAMIC HEIGHT  -          1.870 (meters)        6.14  (feet) COMP
 AE4041  MODELED GRAVITY -    980,107.9   (mgal)                       NAVD 88
 AE4041
 AE4041  VERT ORDER      -  THIRD
 AE4041
 AE4041.The horizontal coordinates were established by autonomous hand held GPS
 AE4041.observations and have an estimated accuracy of +/- 10 meters.
 AE4041
 AE4041.The orthometric height was determined by differential leveling and
 AE4041.adjusted by the NATIONAL GEODETIC SURVEY
 AE4041.in February 1998.
 AE4041
 AE4041.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4041.GEOID18 height accuracy estimate available here.
 AE4041
 AE4041.Click photographs - Photos may exist for this station.
 AE4041
 AE4041.The dynamic height is computed by dividing the NAVD 88
 AE4041.geopotential number by the normal gravity value computed on the
 AE4041.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4041.degrees latitude (g = 980.6199 gals.).
 AE4041
 AE4041.The modeled gravity was interpolated from observed gravity values.
 AE4041
 AE4041;                    North         East    Units  Estimated Accuracy
 AE4041;SPC MD       -   185,403.      450,804.      MT  (+/- 10 meters HH2 GPS)
 AE4041
 AE4041_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7841954944(NAD 83)
 AE4041
 AE4041                          SUPERSEDED SURVEY CONTROL
 AE4041
 AE4041.No superseded survey control is available for this station.
 AE4041
 AE4041_MARKER: DD = SURVEY DISK
 AE4041_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 AE4041_SP_SET: BRIDGE RETAINING WALL
 AE4041_STAMPING: 7 4 SKS 1966
 AE4041_MARK LOGO: USGS
 AE4041_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE4041_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AE4041_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AE4041+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2009
 AE4041
 AE4041  HISTORY     - Date     Condition        Report By
 AE4041  HISTORY     - 1966     MONUMENTED       USGS
 AE4041  HISTORY     - 19950223 GOOD             MCCRON
 AE4041  HISTORY     - 20090930 GOOD             MD-005
 AE4041  HISTORY     - 20131031 GOOD             USPSQD
 AE4041
 AE4041                          STATION DESCRIPTION
 AE4041
 AE4041'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4041'STATION IS LOCATED ABOUT 1 MI (1.6 KM) EAST OF MARTIN STATE AIRPORT IN
 AE4041'MIDDLE RIVER. TO REACH STATION FROM THE POST OFFICE IN MIDDLE RIVER GO
 AE4041'NORTH ON WILSON POINT ROAD (STATE ROAD 587) FOR 0.2 MI (0.3 KM) TO
 AE4041'EASTERN BLVD (RT 150) .TURN RIGHT ON EASTERN BLVD AND GO EASTERLY FOR
 AE4041'1.05 MI (1.69 KM) TO THE STATION ON THE RIGHT. STATION MARK IS SET
 AE4041'FLUSH IN THE TOP OF A CONCRETE HEADWALL BRIDGE ABUTMENT.  IT IS 31.1
 AE4041'FT (9.5 M) SOUTHEAST OF THE CENTERLINE OF THE EASTBOUND LANE OF
 AE4041'EASTERN BLVD (RT 150) , 28.8 FT (8.8 M) NORTHEAST OF POWER POLE NO.
 AE4041'496386, 45.0 FT (13.7 M) SOUTHWEST OF POWER POLE NO.  165705.
 AE4041
 AE4041                          STATION RECOVERY (2009)
 AE4041
 AE4041'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (PAS)
 AE4041'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (PAS).
 AE4041'THE STATION WAS RECOVERED AS DESCRIBED IN THE 1995 STATION RECOVERY
 AE4041'DESCRIPTION.
 AE4041
 AE4041                          STATION RECOVERY (2013)
 AE4041
 AE4041'RECOVERY NOTE BY US POWER SQUADRON 2013
 AE4041'DO NOT BELIEVE IT IS SATELLITE ACCESSIBLE, THE AREA IS MOSTLY COVERED
 AE4041'
 AE4041'WITH BUSHES AND TREE AND CLOSE TO A WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6037 ***********************************************************************
 DN6037  DESIGNATION -  40
 DN6037  PID         -  DN6037
 DN6037  STATE/COUNTY-  MD/CARROLL
 DN6037  COUNTRY     -  US
 DN6037  USGS QUAD   -  WESTMINSTER (2016)
 DN6037
 DN6037                         *CURRENT SURVEY CONTROL
 DN6037  ______________________________________________________________________
 DN6037* NAD 83(1986) POSITION- 39 36 04.6    (N) 076 56 51.1    (W)   HD_HELD2
 DN6037* NAVD 88 ORTHO HEIGHT -   276.395 (meters)      906.81  (feet) ADJUSTED
 DN6037  ______________________________________________________________________
 DN6037  GEOID HEIGHT    -        -32.233 (meters)                     GEOID18
 DN6037  DYNAMIC HEIGHT  -        276.253 (meters)      906.34  (feet) COMP
 DN6037  MODELED GRAVITY -    980,104.2   (mgal)                       NAVD 88
 DN6037
 DN6037  VERT ORDER      -  SECOND    CLASS II
 DN6037
 DN6037.The horizontal coordinates were established by autonomous hand held GPS
 DN6037.observations and have an estimated accuracy of +/- 10 meters.
 DN6037
 DN6037.The orthometric height was determined by differential leveling and
 DN6037.adjusted by the NATIONAL GEODETIC SURVEY
 DN6037.in June 2012.
 DN6037
 DN6037.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6037.GEOID18 height accuracy estimate available here.
 DN6037
 DN6037.Click photographs - Photos may exist for this station.
 DN6037
 DN6037.The dynamic height is computed by dividing the NAVD 88
 DN6037.geopotential number by the normal gravity value computed on the
 DN6037.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6037.degrees latitude (g = 980.6199 gals.).
 DN6037
 DN6037.The modeled gravity was interpolated from observed gravity values.
 DN6037
 DN6037;                    North         East    Units  Estimated Accuracy
 DN6037;SPC MD       -   214,761.      404,507.      MT  (+/- 10 meters HH2 GPS)
 DN6037
 DN6037_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3279085316(NAD 83)
 DN6037
 DN6037                          SUPERSEDED SURVEY CONTROL
 DN6037
 DN6037.No superseded survey control is available for this station.
 DN6037
 DN6037_MARKER: DD = SURVEY DISK
 DN6037_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DN6037_SP_SET: CURB
 DN6037_STAMPING: 40
 DN6037_MARK LOGO: MD-013
 DN6037_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DN6037_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DN6037+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2020
 DN6037
 DN6037  HISTORY     - Date     Condition        Report By
 DN6037  HISTORY     - 1982     MONUMENTED       MD-013
 DN6037  HISTORY     - 20080131 GOOD             MDSHA
 DN6037  HISTORY     - 20141101 GOOD             RODCON
 DN6037  HISTORY     - 20200309 GOOD             WTBALL
 DN6037
 DN6037                          STATION DESCRIPTION
 DN6037
 DN6037'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6037'THE MARK IS LOCATED ABOUT 5.3 MI (8.5 KM) SOUTHWEST OF MANCHESTER, 5.2
 DN6037'MI (8.4 KM) WEST OF HAMPSTEAD AND 3.2 MI (5.1 KM) NORTHEAST OF
 DN6037'WESTMINSTER.
 DN6037'
 DN6037'TO REACH THE MARK FROM THE MAIN STREET AND WESTMINSTER-MANCHESTER
 DN6037'ROAD, PROCEED NORTHEAST ON THE WESTMINSTER-MANCHESTER ROAD (MD ROUTE
 DN6037'27) FOR 3.2 MI (5.1 KM) TO MARYLAND HIGHWAY 482 LEADING NORTHEAST AND
 DN6037'GUADELUPE DRIVE LEADING NORTHWEST.  TURN LEFT AND PROCEED NORTHWEST
 DN6037'FOR 150 FT (45.7 M) TO THE MARK ON THE LEFT.
 DN6037'
 DN6037'IT IS SET IN A V-SHAPED CONCRETE CURB, 20.5 FT (6.2 M) SOUTHWEST OF
 DN6037'THE CENTERLINE OF THE DRIVE, 51.0 FT (15.5 M) NORTH OF A METAL
 DN6037'TELEPHONE JUNCTION BOX NUMBERED 1, 90.5 FT (27.6 M) SOUTHEAST OF THE
 DN6037'PROJECTED CENTERLINE OF THE MACADAM DRIVEWAY LEADING TO HOUSE NUMBER
 DN6037'1314, 22.0 FT (6.7 M) NORTHWEST OF THE NORTHWEST END OF A STANDARD
 DN6037'CONCRETE CURB AND GUTTER.
 DN6037
 DN6037                          STATION RECOVERY (2014)
 DN6037
 DN6037'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DN6037'RECOVERED IN GOOD CONDITION.
 DN6037
 DN6037                          STATION RECOVERY (2020)
 DN6037
 DN6037'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 DN6037'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0565 ***********************************************************************
 JV0565  DESIGNATION -  40 A BORR
 JV0565  PID         -  JV0565
 JV0565  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0565  COUNTRY     -  US
 JV0565  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0565
 JV0565                         *CURRENT SURVEY CONTROL
 JV0565  ______________________________________________________________________
 JV0565* NAD 83(1986) POSITION- 39 16 51.     (N) 076 37 10.     (W)   SCALED
 JV0565* NAVD 88 ORTHO HEIGHT -     7.411 (meters)       24.31  (feet) ADJUSTED
 JV0565  ______________________________________________________________________
 JV0565  GEOID HEIGHT    -        -32.722 (meters)                     GEOID18
 JV0565  DYNAMIC HEIGHT  -          7.407 (meters)       24.30  (feet) COMP
 JV0565  MODELED GRAVITY -    980,103.6   (mgal)                       NAVD 88
 JV0565
 JV0565  VERT ORDER      -  FIRST     CLASS I
 JV0565
 JV0565.The horizontal coordinates were scaled from a map and have
 JV0565.an estimated accuracy of +/- 6 seconds.
 JV0565
 JV0565.The orthometric height was determined by differential leveling and
 JV0565.adjusted by the NATIONAL GEODETIC SURVEY
 JV0565.in June 1991.
 JV0565
 JV0565.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0565.GEOID18 height accuracy estimate available here.
 JV0565
 JV0565.Click photographs - Photos may exist for this station.
 JV0565
 JV0565.The dynamic height is computed by dividing the NAVD 88
 JV0565.geopotential number by the normal gravity value computed on the
 JV0565.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0565.degrees latitude (g = 980.6199 gals.).
 JV0565
 JV0565.The modeled gravity was interpolated from observed gravity values.
 JV0565
 JV0565;                    North         East    Units  Estimated Accuracy
 JV0565;SPC MD       -   179,250.      432,840.      MT  (+/- 180 meters Scaled)
 JV0565
 JV0565_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ603491(NAD 83)
 JV0565
 JV0565                          SUPERSEDED SURVEY CONTROL
 JV0565
 JV0565  NGVD 29 (11/26/84)    7.653  (m)           25.11   (f) ADJUSTED    1 1
 JV0565
 JV0565.Superseded values are not recommended for survey control.
 JV0565
 JV0565.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0565.See file dsdata.pdf to determine how the superseded data were derived.
 JV0565
 JV0565_MARKER: Q = CHISELED SQUARE
 JV0565_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0565_SP_SET: TUNNEL WALL
 JV0565_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0565
 JV0565  HISTORY     - Date     Condition        Report By
 JV0565  HISTORY     - UNK      MONUMENTED       BORR
 JV0565  HISTORY     - 1971     GOOD             NGS
 JV0565
 JV0565                          STATION DESCRIPTION
 JV0565
 JV0565'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0565'AT BALTIMORE.
 JV0565'ABOUT 0.4 MILE SOUTH ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0565'FROM THE CAMDEN STATION AT BALTIMORE, 148 YARDS SOUTH OF THE
 JV0565'RAILROAD UNDERPASS FOR LEE STREET, A 1-INCH CHISELED SQUARE ON
 JV0565'THE CORNER OF THE STONE RETAINING WALL THAT IS PART OF THE
 JV0565'HOWARD STREET TUNNEL, AT A POINT WHERE THE RETAINING WALL MAKES
 JV0565'A TURN, 24 FEET WEST OF THE WEST RAIL, AND ABOUT 5 FEET ABOVE
 JV0565'THE LEVEL OF THE TRACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0243 ***********************************************************************
 HU0243  DESIGNATION -  40.48 PRR
 HU0243  PID         -  HU0243
 HU0243  STATE/COUNTY-  MD/WORCESTER
 HU0243  COUNTRY     -  US
 HU0243  USGS QUAD   -  BERLIN (2016)
 HU0243
 HU0243                         *CURRENT SURVEY CONTROL
 HU0243  ______________________________________________________________________
 HU0243* NAD 83(1986) POSITION- 38 19 42.     (N) 075 13 17.     (W)   SCALED
 HU0243* NAVD 88 ORTHO HEIGHT -    11.797 (meters)       38.70  (feet) ADJUSTED
 HU0243  ______________________________________________________________________
 HU0243  GEOID HEIGHT    -        -36.025 (meters)                     GEOID18
 HU0243  DYNAMIC HEIGHT  -         11.790 (meters)       38.68  (feet) COMP
 HU0243  MODELED GRAVITY -    980,005.4   (mgal)                       NAVD 88
 HU0243
 HU0243  VERT ORDER      -  SECOND    CLASS 0
 HU0243
 HU0243.The horizontal coordinates were scaled from a map and have
 HU0243.an estimated accuracy of +/- 6 seconds.
 HU0243
 HU0243.The orthometric height was determined by differential leveling and
 HU0243.adjusted by the NATIONAL GEODETIC SURVEY
 HU0243.in June 1991.
 HU0243
 HU0243.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0243.GEOID18 height accuracy estimate available here.
 HU0243
 HU0243.Click photographs - Photos may exist for this station.
 HU0243
 HU0243.The dynamic height is computed by dividing the NAVD 88
 HU0243.geopotential number by the normal gravity value computed on the
 HU0243.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0243.degrees latitude (g = 980.6199 gals.).
 HU0243
 HU0243.The modeled gravity was interpolated from observed gravity values.
 HU0243
 HU0243;                    North         East    Units  Estimated Accuracy
 HU0243;SPC MD       -    74,960.      555,510.      MT  (+/- 180 meters Scaled)
 HU0243
 HU0243_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH806422(NAD 83)
 HU0243
 HU0243                          SUPERSEDED SURVEY CONTROL
 HU0243
 HU0243  NGVD 29 (11/26/84)   12.040  (m)           39.50   (f) ADJUSTED    2 0
 HU0243
 HU0243.Superseded values are not recommended for survey control.
 HU0243
 HU0243.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0243.See file dsdata.pdf to determine how the superseded data were derived.
 HU0243
 HU0243_MARKER: B = BOLT
 HU0243_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0243_SP_SET: SIGNAL TOWER
 HU0243_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0243
 HU0243  HISTORY     - Date     Condition        Report By
 HU0243  HISTORY     - UNK      MONUMENTED       PRR
 HU0243  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU0243  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU0243
 HU0243                          STATION DESCRIPTION
 HU0243
 HU0243'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0243'AT BERLIN.
 HU0243'AT BERLIN, WORCESTER COUNTY, 44 FEET SOUTHWEST OF THE SOUTHWEST
 HU0243'CORNER OF THE PENNSYLVANIA RAILROAD STATION.  13 FEET NORTHWEST OF
 HU0243'THE CENTERLINE OF THE INTERSECTION OF THE RAILROAD TRACKS, 9 FEET
 HU0243'WEST OF THE CENTERLINE OF THE TRACK, 31 FEET NORTHWEST OF THE
 HU0243'NORTHWEST CORNER OF A WATER TANK, IN THE TOP OF A SIGNAL TOWER
 HU0243'AND 6 INCHES LOWER THAN THE TRACK.  A COPPER BOLT.  NOTE-- IT
 HU0243'WAS REPORTED IN MAY 1942 THAT THE SIGNAL TOWER HAS BEEN REMOVED
 HU0243'AND ONLY THE BASE REMAINS.
 HU0243
 HU0243                          STATION RECOVERY (2003)
 HU0243
 HU0243'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0243'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6555 ***********************************************************************
 HV6555  DESIGNATION -  4000 YARD F RNG TRIAL
 HV6555  PID         -  HV6555
 HV6555  STATE/COUNTY-  MD/ST MARYS
 HV6555  COUNTRY     -  US
 HV6555  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6555
 HV6555                         *CURRENT SURVEY CONTROL
 HV6555  ______________________________________________________________________
 HV6555* NAD 83(1993) POSITION- 38 06 50.03872(N) 076 28 49.19936(W)   ADJUSTED
 HV6555* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6555  ______________________________________________________________________
 HV6555  GEOID HEIGHT    -        -34.709 (meters)                     GEOID18
 HV6555  LAPLACE CORR    -         -5.92  (seconds)                    DEFLEC18
 HV6555  HORZ ORDER      -  THIRD
 HV6555
 HV6555.The horizontal coordinates were established by classical geodetic methods
 HV6555.and adjusted by the National Geodetic Survey in November 1994.
 HV6555
 HV6555.The orthometric height was scaled from a topographic map.
 HV6555
 HV6555.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6555.GEOID18 height accuracy estimate available here.
 HV6555
 HV6555.Click photographs - Photos may exist for this station.
 HV6555
 HV6555.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6555
 HV6555. The following values were computed from the NAD 83(1993) position.
 HV6555
 HV6555;                    North         East     Units Scale Factor Converg.
 HV6555;SPC MD       -    49,774.990   445,574.399   MT  1.00003758   +0 19 34.2
 HV6555;SPC MD       -   163,303.45  1,461,855.34   sFT  1.00003758   +0 19 34.2
 HV6555;SPC VA N     - 2,051,590.081 3,677,100.959   MT  0.99998676   +1 15 37.8
 HV6555;SPC VA N     - 6,730,925.12 12,063,955.40   sFT  0.99998676   +1 15 37.8
 HV6555;SPC VA S     - 1,199,502.911 3,677,109.427   MT  1.00003019   +1 13 32.8
 HV6555;SPC VA S     - 3,935,369.13 12,063,983.18   sFT  1.00003019   +1 13 32.8
 HV6555;UTM  18      - 4,219,487.414   370,228.507   MT  0.99980741   -0 54 49.8
 HV6555
 HV6555!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6555!SPC MD       -   1.00000549  x   1.00003758  =   1.00004307
 HV6555!SPC VA N     -   1.00000549  x   0.99998676  =   0.99999225
 HV6555!SPC VA S     -   1.00000549  x   1.00003019  =   1.00003568
 HV6555!UTM  18      -   1.00000549  x   0.99980741  =   0.99981290
 HV6555
 HV6555:                Primary Azimuth Mark                     Grid Az
 HV6555:SPC MD       -  PINEY POINT LIGHTHOUSE                   298 28 48.1
 HV6555:SPC VA N     -  PINEY POINT LIGHTHOUSE                   297 32 44.5
 HV6555:SPC VA S     -  PINEY POINT LIGHTHOUSE                   297 34 49.5
 HV6555:UTM  18      -  PINEY POINT LIGHTHOUSE                   299 43 12.1
 HV6555
 HV6555_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7022819487(NAD 83)
 HV6555
 HV6555|---------------------------------------------------------------------|
 HV6555| PID    Reference Object                     Distance      Geod. Az  |
 HV6555|                                                           dddmmss.s |
 HV6555| CX2016 4000 YARD F RNG TRIAL RM             10.930 METERS 14024     |
 HV6555| HV6869 PINEY POINT LIGHTHOUSE              APPROX. 4.9 KM 2984822.3 |
 HV6555| HV6564 4000 YARD FRONT RANGE                12.045 METERS 33049     |
 HV6555|---------------------------------------------------------------------|
 HV6555
 HV6555                          SUPERSEDED SURVEY CONTROL
 HV6555
 HV6555  NAD 83(1991)-  38 06 50.03765(N)    076 28 49.20214(W) AD(       ) 3
 HV6555  NAD 83(1986)-  38 06 50.03901(N)    076 28 49.21529(W) AD(       ) 3
 HV6555  NAD 27      -  38 06 49.59000(N)    076 28 50.38400(W) AD(       ) 3
 HV6555  USSD        -  38 06 50.01100(N)    076 28 50.16500(W) AD(       ) 3
 HV6555
 HV6555.Superseded values are not recommended for survey control.
 HV6555
 HV6555.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6555.See file dsdata.pdf to determine how the superseded data were derived.
 HV6555
 HV6555_MARKER: DS = TRIANGULATION STATION DISK
 HV6555_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6555_MARK LOGO: CGS
 HV6555_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6555
 HV6555  HISTORY     - Date     Condition        Report By
 HV6555  HISTORY     - 1919     MONUMENTED       CGS
 HV6555  HISTORY     - 1932     SEE DESCRIPTION  CGS
 HV6555  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6555
 HV6555                          STATION DESCRIPTION
 HV6555
 HV6555'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6555'ON NE SIDE OF POTOMAC RIVER, ON W SIDE OF ST. GEORGE ISLAND,
 HV6555'ABREAST OF UPPER END OF ISLAND CREEK, IN AN ORCHARD BELONGING TO
 HV6555'J.C. HOBBS, AND ABOUT 350 METERS S OF THE CATHOLIC CHURCH.  IT IS
 HV6555'100 METERS S OF A GROVE OF TREES MARKING WHERE THE HOBBS HOUSE
 HV6555'FORMERLY STOOD, AND IS ON FLAT CLAY LAND, ABOUT 2 FEET ABOVE
 HV6555'HIGH-WATER, 19.3 METERS (63 FEET) FROM EDGE OF BANK, WHICH IS
 HV6555'ABOUT 2 METERS FROM HIGH-WATER LINE, AND 7.2 METERS (24 FEET) N
 HV6555'OF THE S FENCE OF THE ORCHARD.  THE STATION AND REFERENCE MARKS
 HV6555'ARE BRONZE TABLETS SET IN CONCRETE IN TILE PIPES SURROUNDED BY
 HV6555'CONCRETE AS DESCRIBED IN NOTES 6B AND 13B.  THE STATION TABLET IS
 HV6555'STAMPED TRIAL.  THE REFERENCE MARK IS 0.5 METER (1.6 FEET) N OF
 HV6555'THE S FENCE LINE OF ORCHARD, AND ABOUT 26 METERS (85 FEET)
 HV6555'FROM EDGE OF BANK.  IT IS 10.93 METERS (35.9 FEET) FROM STATION
 HV6555'IN AZIMUTH 263 DEG 40.2 MIN.  STATION FRONT RANGE IS 12.04
 HV6555'METERS (39.5 FEET) NW OF TRIAL STATION.
 HV6555
 HV6555                          STATION RECOVERY (1932)
 HV6555
 HV6555'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (FJH)
 HV6555'A U.S.C. AND G.S. TRIANGULATION MARKER, STANDARD DISK, MARKED
 HV6555'TRIAL SET IN CONCRETE AT THE END OF A PIECE OF PIPE WAS FOUND
 HV6555'LYING ON THE BEACH ON ST. GEORGE ISLAND, MARYLAND, APPROXIMATELY
 HV6555'500 YARDS S OF CHURCH ON W SHORE.
 HV6555
 HV6555                          STATION RECOVERY (1958)
 HV6555
 HV6555'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6555'THIS STATION WAS THOROUGHLY SEARCHED FOR.  LOCAL INQUIRIES
 HV6555'ASCERTAINED THE POSITIVE DESTRUCTION OF THIS STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6564 ***********************************************************************
 HV6564  DESIGNATION -  4000 YARD FRONT RANGE
 HV6564  PID         -  HV6564
 HV6564  STATE/COUNTY-  MD/ST MARYS
 HV6564  COUNTRY     -  US
 HV6564  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6564
 HV6564                         *CURRENT SURVEY CONTROL
 HV6564  ______________________________________________________________________
 HV6564* NAD 83(1993) POSITION- 38 06 50.37978(N) 076 28 49.44047(W)   ADJUSTED
 HV6564* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6564  ______________________________________________________________________
 HV6564  GEOID HEIGHT    -        -34.708 (meters)                     GEOID18
 HV6564  LAPLACE CORR    -         -5.92  (seconds)                    DEFLEC18
 HV6564  HORZ ORDER      -  SECOND
 HV6564
 HV6564.The horizontal coordinates were established by classical geodetic methods
 HV6564.and adjusted by the National Geodetic Survey in November 1994.
 HV6564
 HV6564.The orthometric height was scaled from a topographic map.
 HV6564
 HV6564.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6564.GEOID18 height accuracy estimate available here.
 HV6564
 HV6564.Click photographs - Photos may exist for this station.
 HV6564
 HV6564.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6564
 HV6564. The following values were computed from the NAD 83(1993) position.
 HV6564
 HV6564;                    North         East     Units Scale Factor Converg.
 HV6564;SPC MD       -    49,785.472   445,568.465   MT  1.00003756   +0 19 34.0
 HV6564;SPC MD       -   163,337.84  1,461,835.87   sFT  1.00003756   +0 19 34.0
 HV6564;SPC VA N     - 2,051,600.465 3,677,094.856   MT  0.99998674   +1 15 37.7
 HV6564;SPC VA N     - 6,730,959.19 12,063,935.37   sFT  0.99998674   +1 15 37.7
 HV6564;SPC VA S     - 1,199,513.299 3,677,103.330   MT  1.00003021   +1 13 32.7
 HV6564;SPC VA S     - 3,935,403.22 12,063,963.18   sFT  1.00003021   +1 13 32.7
 HV6564;UTM  18      - 4,219,498.020   370,222.804   MT  0.99980743   -0 54 49.9
 HV6564
 HV6564!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6564!SPC MD       -   1.00000549  x   1.00003756  =   1.00004305
 HV6564!SPC VA N     -   1.00000549  x   0.99998674  =   0.99999223
 HV6564!SPC VA S     -   1.00000549  x   1.00003021  =   1.00003570
 HV6564!UTM  18      -   1.00000549  x   0.99980743  =   0.99981292
 HV6564
 HV6564_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7022219498(NAD 83)
 HV6564
 HV6564                          SUPERSEDED SURVEY CONTROL
 HV6564
 HV6564  NAD 83(1991)-  38 06 50.37871(N)    076 28 49.44326(W) AD(       ) 2
 HV6564  NAD 83(1986)-  38 06 50.38007(N)    076 28 49.45641(W) AD(       ) 2
 HV6564  NAD 27      -  38 06 49.93100(N)    076 28 50.62500(W) AD(       ) 2
 HV6564  USSD        -  38 06 50.35200(N)    076 28 50.40600(W) AD(       ) 3
 HV6564
 HV6564.Superseded values are not recommended for survey control.
 HV6564
 HV6564.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6564.See file dsdata.pdf to determine how the superseded data were derived.
 HV6564
 HV6564_MARKER: DS = TRIANGULATION STATION DISK
 HV6564_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6564_STAMPING: FRONT RANGE 4000
 HV6564_MARK LOGO: CGS
 HV6564_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6564
 HV6564  HISTORY     - Date     Condition        Report By
 HV6564  HISTORY     - 1919     MONUMENTED       CGS
 HV6564  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6564
 HV6564                          STATION DESCRIPTION
 HV6564
 HV6564'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6564'STATION IS ON NE SIDE OF POTOMAC RIVER, ON W SIDE OF ST. GEORGE
 HV6564'ISLAND, ABREAST THE UPPER END OF ISLAND CREEK, IN AN ORCHARD
 HV6564'BELONGING TO J.C. HOBBS, ABOUT 350 METERS S OF THE CATHOLIC
 HV6564'CHURCH, 100 METERS S OF A GROVE OF TREES ON POINT MARKING WHERE
 HV6564'HOBBS HOUSE ORIGINALLY STOOD.  IT IS ON FLAT CLAY LAND, 2 FEET
 HV6564'ABOVE HIGH-WATER, ABOUT 17 METERS FROM EDGE OF BANK, 19 METERS
 HV6564'FROM HIGH-WATER MARK, AND ABOUT 18 METERS N OF S FENCE LINE OF
 HV6564'THE ORCHARD.  THE TRIAL STATION MARK IS 12.04 METERS (39.5
 HV6564'FEET) SE OF THE STATION, AND THE TRIAL STATION REFERENCE MARK
 HV6564'22 METERS DISTANT.  STATION IS MARKED BY A BRONZE TABLET,
 HV6564'STAMPED FRONT RANGE 4,000, SET IN CONCRETE IN A TILE
 HV6564'SURROUNDED BY A MASS OF CONCRETE.
 HV6564
 HV6564                          STATION RECOVERY (1958)
 HV6564
 HV6564'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6564'THIS STATION WAS THOROUGHLY SEARCHED FOR.  LOCAL INQUIRIES
 HV6564'ASCERTAINED THE POSITIVE DESTRUCTION OF THIS MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6563 ***********************************************************************
 HV6563  DESIGNATION -  4000 YARD REAR RANGE
 HV6563  PID         -  HV6563
 HV6563  STATE/COUNTY-  MD/ST MARYS
 HV6563  COUNTRY     -  US
 HV6563  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6563
 HV6563                         *CURRENT SURVEY CONTROL
 HV6563  ______________________________________________________________________
 HV6563* NAD 83(1993) POSITION- 38 06 55.10151(N) 076 28 45.50882(W)   ADJUSTED
 HV6563* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6563  ______________________________________________________________________
 HV6563  GEOID HEIGHT    -        -34.710 (meters)                     GEOID18
 HV6563  LAPLACE CORR    -         -5.93  (seconds)                    DEFLEC18
 HV6563  HORZ ORDER      -  THIRD
 HV6563
 HV6563.The horizontal coordinates were established by classical geodetic methods
 HV6563.and adjusted by the National Geodetic Survey in November 1994.
 HV6563
 HV6563.The orthometric height was scaled from a topographic map.
 HV6563
 HV6563.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6563.GEOID18 height accuracy estimate available here.
 HV6563
 HV6563.Click photographs - Photos may exist for this station.
 HV6563
 HV6563.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6563
 HV6563. The following values were computed from the NAD 83(1993) position.
 HV6563
 HV6563;                    North         East     Units Scale Factor Converg.
 HV6563;SPC MD       -    49,931.606   445,663.412   MT  1.00003726   +0 19 36.5
 HV6563;SPC MD       -   163,817.28  1,462,147.38   sFT  1.00003726   +0 19 36.5
 HV6563;SPC VA N     - 2,051,748.120 3,677,187.403   MT  0.99998654   +1 15 40.1
 HV6563;SPC VA N     - 6,731,443.62 12,064,239.00   sFT  0.99998654   +1 15 40.1
 HV6563;SPC VA S     - 1,199,660.905 3,677,195.970   MT  1.00003051   +1 13 35.1
 HV6563;SPC VA S     - 3,935,887.49 12,064,267.11   sFT  1.00003051   +1 13 35.1
 HV6563;UTM  18      - 4,219,642.032   370,320.868   MT  0.99980711   -0 54 47.6
 HV6563
 HV6563!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6563!SPC MD       -   1.00000533  x   1.00003726  =   1.00004259
 HV6563!SPC VA N     -   1.00000533  x   0.99998654  =   0.99999187
 HV6563!SPC VA S     -   1.00000533  x   1.00003051  =   1.00003584
 HV6563!UTM  18      -   1.00000533  x   0.99980711  =   0.99981244
 HV6563
 HV6563_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7032019642(NAD 83)
 HV6563
 HV6563                          SUPERSEDED SURVEY CONTROL
 HV6563
 HV6563  NAD 83(1991)-  38 06 55.10046(N)    076 28 45.51156(W) AD(       ) 3
 HV6563  NAD 83(1986)-  38 06 55.10180(N)    076 28 45.52475(W) AD(       ) 3
 HV6563  NAD 27      -  38 06 54.65200(N)    076 28 46.68900(W) AD(       ) 3
 HV6563  USSD        -  38 06 55.07400(N)    076 28 46.47600(W) AD(       ) 3
 HV6563
 HV6563.Superseded values are not recommended for survey control.
 HV6563
 HV6563.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6563.See file dsdata.pdf to determine how the superseded data were derived.
 HV6563
 HV6563_MARKER: DS = TRIANGULATION STATION DISK
 HV6563_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6563_STAMPING: REAR RANGE
 HV6563_MARK LOGO: CGS
 HV6563_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6563
 HV6563  HISTORY     - Date     Condition        Report By
 HV6563  HISTORY     - 1919     MONUMENTED       CGS
 HV6563  HISTORY     - 1952     GOOD             CGS
 HV6563  HISTORY     - 1958     GOOD             CGS
 HV6563  HISTORY     - 1959     GOOD             CGS
 HV6563  HISTORY     - 1977     GOOD             MDDNR
 HV6563
 HV6563                          STATION DESCRIPTION
 HV6563
 HV6563'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6563'STATION IS NE SIDE OF POTOMAC RIVER, ALONG THE W SIDE OF THE
 HV6563'ROAD DOWN THE MIDDLE OF ST. GEORGE ISLAND, ABREAST OF THE UPPER
 HV6563'END OF ISLAND CREEK, IN A FIELD BELONGING TO J.C. HOBBS.  IT IS
 HV6563'ABOUT 300 METERS S OF THE CATHOLIC CHURCH, 1.10 METERS (3.6 FEET)
 HV6563'W OF W FENCE LINE OF ROAD, 67 METERS N OF N FENCE LINE OF JOHN
 HV6563'W. TWILLEYS LOT, AND JUST AT EDGE OF PLOWED LAND.
 HV6563'
 HV6563'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6563'CONCRETE IN TILES SURROUNDED BY MASSES OF CONCRETE.  STATION IS
 HV6563'STAMPED REAR RANGE AND THE REFERENCE TABLET IS STAMPED
 HV6563'R.M. 1.  REFERENCE MARK IS 1.12 METERS (3.7 FEET) W OF W FENCE
 HV6563'LINE OF ROAD, AMONG SOME LOCUST BUSHES.  IT IS 20.13 METERS
 HV6563'(66.0 FEET) S FROM STATION, AND 46.9 METERS (154 FEET) N FROM
 HV6563'THE N FENCE LINE OF TWILLEYS LOT.
 HV6563
 HV6563                          STATION RECOVERY (1952)
 HV6563
 HV6563'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (EHK)
 HV6563'STATION AND REFERENCE MARK 1 WERE RECOVERED AS DESCRIBED IN GOOD
 HV6563'CONDITION.
 HV6563
 HV6563                          STATION RECOVERY (1958)
 HV6563
 HV6563'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6563'STATION AND REFERENCE MARK WERE RECOVERED IN GOOD CONDITION.  A
 HV6563'NEW DESCRIPTION FOLLOWS.
 HV6563'
 HV6563'THE STATION IS LOCATED ON THE NORTH SIDE OF THE POTOMAC RIVER
 HV6563'ON ST. GEORGE ISLAND APPROXIMATELY MIDWAY BETWEEN DEEP POINT AND
 HV6563'THE STRAITS AND IN A SMALL CLEARED FIELD OF FEDERALLY OWNED LAND.
 HV6563'
 HV6563'4,000 YARD REAR RANGE IS A STANDARD DISK, STAMPED REAR RANGE,
 HV6563'WHICH IS SET FLUSH WITH THE SURFACE IN A 6 INCH CONCRETE FILLED
 HV6563'TILE, AND LIES ABOUT 985 FEET SE OF THE CATHOLIC CHURCH, 21.0
 HV6563'FEET SW OF CENTER LINE OF STATE ROUTE 249 AND 15.9 FEET SE OF
 HV6563'P AND PEC TELEPHONE POLE NO. 255.
 HV6563'
 HV6563'RM NO. 1 IS A STANDARD DISK, STAMPED RM 1, WHICH IS SET FLUSH
 HV6563'WITH THE SURFACE IN A CONCRETE FILLED 6 INCH TILE AND LIES 20.3
 HV6563'FEET SW OF CENTER LINE OF STATE ROUTE NO. 249 AND 66 FEET SE OF
 HV6563'STATION.
 HV6563
 HV6563                          STATION RECOVERY (1959)
 HV6563
 HV6563'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (GFW)
 HV6563'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION
 HV6563'AS DESCRIBED.
 HV6563
 HV6563                          STATION RECOVERY (1977)
 HV6563
 HV6563'RECOVERY NOTE BY MD DEPT OF NAT RES 1977 (GEH)
 HV6563'REAR RANGE RECOVERED GOOD.
 HV6563'
 HV6563'RM 1 RECOVERED GOOD.
 HV6563'
 HV6563'RECOVERED AS DESCRIBED.  THE TELEPHONE POLE NO. 255 NO LONGER
 HV6563'EXITS.  THE STA. IS 81 FEET NW 1/4 OF 16 INCH PINE TREE THAT IS
 HV6563'LOCATED ON E SIDE OF ROAD.  THE RM IS 40 FEET W 1/4 OF 16 INCH PINE
 HV6563'TREE.
 HV6563'
 HV6563'DISTANCE AND DIRECTION FROM NEAREST TOWN--ON ST. GEORGES ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1842 ***********************************************************************
 JV1842  DESIGNATION -  402
 JV1842  PID         -  JV1842
 JV1842  STATE/COUNTY-  MD/CARROLL
 JV1842  COUNTRY     -  US
 JV1842  USGS QUAD   -  UNION BRIDGE (2016)
 JV1842
 JV1842                         *CURRENT SURVEY CONTROL
 JV1842  ______________________________________________________________________
 JV1842* NAD 83(1986) POSITION- 39 34 13.7    (N) 077 10 37.6    (W)   HD_HELD2
 JV1842* NAVD 88 ORTHO HEIGHT -   122.297 (meters)      401.24  (feet) ADJUSTED
 JV1842  ______________________________________________________________________
 JV1842  GEOID HEIGHT    -        -32.627 (meters)                     GEOID18
 JV1842  DYNAMIC HEIGHT  -        122.232 (meters)      401.02  (feet) COMP
 JV1842  MODELED GRAVITY -    980,095.8   (mgal)                       NAVD 88
 JV1842
 JV1842  VERT ORDER      -  SECOND    CLASS 0
 JV1842
 JV1842.The horizontal coordinates were established by autonomous hand held GPS
 JV1842.observations and have an estimated accuracy of +/- 10 meters.
 JV1842
 JV1842.The orthometric height was determined by differential leveling and
 JV1842.adjusted by the NATIONAL GEODETIC SURVEY
 JV1842.in June 1991.
 JV1842
 JV1842.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1842.GEOID18 height accuracy estimate available here.
 JV1842
 JV1842.Click photographs - Photos may exist for this station.
 JV1842
 JV1842.The dynamic height is computed by dividing the NAVD 88
 JV1842.geopotential number by the normal gravity value computed on the
 JV1842.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1842.degrees latitude (g = 980.6199 gals.).
 JV1842
 JV1842.The modeled gravity was interpolated from observed gravity values.
 JV1842
 JV1842;                    North         East    Units  Estimated Accuracy
 JV1842;SPC MD       -   211,354.      384,781.      MT  (+/- 10 meters HH2 GPS)
 JV1842
 JV1842_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1299482349(NAD 83)
 JV1842
 JV1842                          SUPERSEDED SURVEY CONTROL
 JV1842
 JV1842  NGVD 29 (11/26/84)  122.506  (m)          401.92   (f) ADJUSTED    2 0
 JV1842
 JV1842.Superseded values are not recommended for survey control.
 JV1842
 JV1842.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1842.See file dsdata.pdf to determine how the superseded data were derived.
 JV1842
 JV1842_MARKER: DB = BENCH MARK DISK
 JV1842_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1842_SP_SET: BUILDING
 JV1842_STAMPING: 402
 JV1842_MARK LOGO: USGS
 JV1842_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1842_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1842+SATELLITE: SATELLITE OBSERVATIONS - December 20, 2017
 JV1842
 JV1842  HISTORY     - Date     Condition        Report By
 JV1842  HISTORY     - UNK      MONUMENTED       USGS
 JV1842  HISTORY     - 1935     GOOD             CGS
 JV1842  HISTORY     - 1942     GOOD             CGS
 JV1842  HISTORY     - 20050831 GOOD             GEOCAC
 JV1842  HISTORY     - 20090226 GOOD             GEOCAC
 JV1842  HISTORY     - 20140517 GOOD             GEOCAC
 JV1842  HISTORY     - 20171220 GOOD             GPI
 JV1842
 JV1842                          STATION DESCRIPTION
 JV1842
 JV1842'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1842'AT UNION BRIDGE.
 JV1842'AT UNION BRIDGE, CARROLL COUNTY, AT THE WESTERN MARYLAND RAILWAY
 JV1842'STATION, AT THE OLD FIRST NATIONAL BANK ENTRANCE, IN THE FRONT
 JV1842'SIDE OF THE SOUTHEAST CORNER, AND ABOUT 3 FEET ABOVE THE
 JV1842'GROUND.  A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK,
 JV1842'STAMPED 402 AND SET VERTICALLY.
 JV1842
 JV1842                          STATION RECOVERY (1942)
 JV1842
 JV1842'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV1842'RECOVERED IN GOOD CONDITION.
 JV1842
 JV1842                          STATION RECOVERY (2005)
 JV1842
 JV1842'RECOVERY NOTE BY GEOCACHING 2005 (RCF)
 JV1842'RECOVERED IN GOOD CONDITION.
 JV1842
 JV1842                          STATION RECOVERY (2009)
 JV1842
 JV1842'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 JV1842'RECOVERED IN GOOD CONDITION.
 JV1842
 JV1842                          STATION RECOVERY (2014)
 JV1842
 JV1842'RECOVERY NOTE BY GEOCACHING 2014 (MFM)
 JV1842'RECOVERED AS DESCRIBED.
 JV1842
 JV1842                          STATION RECOVERY (2017)
 JV1842
 JV1842'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2017 (LJB)
 JV1842'THE BUILDING HAS BEEN REPAINTED AND THE MARK IS PAINTED OVER, BUT
 JV1842'REMAINS LEGIBLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1884 ***********************************************************************
 JV1884  DESIGNATION -  402 RESET
 JV1884  PID         -  JV1884
 JV1884  STATE/COUNTY-  MD/FREDERICK
 JV1884  COUNTRY     -  US
 JV1884  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV1884
 JV1884                         *CURRENT SURVEY CONTROL
 JV1884  ______________________________________________________________________
 JV1884* NAD 83(1986) POSITION- 39 32 13.45   (N) 077 24 55.98   (W)   HD_HELD1
 JV1884* NAVD 88 ORTHO HEIGHT -   121.585 (meters)      398.90  (feet) ADJUSTED
 JV1884  ______________________________________________________________________
 JV1884  GEOID HEIGHT    -        -32.979 (meters)                     GEOID18
 JV1884  DYNAMIC HEIGHT  -        121.520 (meters)      398.69  (feet) COMP
 JV1884  MODELED GRAVITY -    980,092.5   (mgal)                       NAVD 88
 JV1884
 JV1884  VERT ORDER      -  SECOND    CLASS I
 JV1884
 JV1884.The horizontal coordinates were determined by differentially corrected
 JV1884.hand held GPS observations or other comparable positioning techniques
 JV1884.and have an estimated accuracy of +/- 3 meters.
 JV1884
 JV1884.The orthometric height was determined by differential leveling and
 JV1884.adjusted by the NATIONAL GEODETIC SURVEY
 JV1884.in November 2003.
 JV1884
 JV1884.No vertical observational check was made to the station.
 JV1884
 JV1884.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1884.GEOID18 height accuracy estimate available here.
 JV1884
 JV1884.Click photographs - Photos may exist for this station.
 JV1884
 JV1884.The dynamic height is computed by dividing the NAVD 88
 JV1884.geopotential number by the normal gravity value computed on the
 JV1884.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1884.degrees latitude (g = 980.6199 gals.).
 JV1884
 JV1884.The modeled gravity was interpolated from observed gravity values.
 JV1884
 JV1884;                    North         East    Units  Estimated Accuracy
 JV1884;SPC MD       -   207,711.9     364,275.7     MT  (+/- 3 meters HH1 GPS) 
 JV1884
 JV1884_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9241179165(NAD 83)
 JV1884
 JV1884                          SUPERSEDED SURVEY CONTROL
 JV1884
 JV1884  NAVD 88 (11/18/05)  121.608  (m)          398.98   (f) SUPERSEDED  3 0
 JV1884  NGVD 29 (??/??/??)  121.82   (m)          399.7    (f) RESET       3  
 JV1884
 JV1884.Superseded values are not recommended for survey control.
 JV1884
 JV1884.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1884.See file dsdata.pdf to determine how the superseded data were derived.
 JV1884
 JV1884_MARKER: DB = BENCH MARK DISK
 JV1884_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1884_SP_SET: CURB
 JV1884_STAMPING: 402 RESET 1959
 JV1884_MARK LOGO: USGS
 JV1884_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1884_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1884_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1884+SATELLITE: SATELLITE OBSERVATIONS - March 01, 2017
 JV1884
 JV1884  HISTORY     - Date     Condition        Report By
 JV1884  HISTORY     - 1959     MONUMENTED       MDSRC
 JV1884  HISTORY     - 19970811 GOOD             USPSQD
 JV1884  HISTORY     - 20011206 GOOD             MDSHA
 JV1884  HISTORY     - 20080225 GOOD             GEOCAC
 JV1884  HISTORY     - 20170301 GOOD             BASE9
 JV1884
 JV1884                          STATION DESCRIPTION
 JV1884
 JV1884'DESCRIBED BY MD STATE ROADS COMM 1959
 JV1884'AT LEWISTOWN.
 JV1884'THE MARK IS LOCATED AT LEWISTOWN, ON U.S. HIGHWAY 15, IN FRONT OF
 JV1884'LEWISTOWN METHODIST CHURCH, 30.6 FEET WEST OF THE CENTERLINE OF
 JV1884'U.S. 15, 64.5 FEET NORTHWEST OF POWER POLE 321, 33.1 FEET
 JV1884'NORTHEAST OF SOUTHEAST CORNER OF CHURCH, 36.0 FEET SOUTHEAST OF
 JV1884'NORTHEAST CORNER OF CHURCH, AND SET FLUSH IN AN 8-INCH CURB.
 JV1884
 JV1884                          STATION RECOVERY (1997)
 JV1884
 JV1884'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV1884'RECOVERED IN GOOD CONDITION.
 JV1884
 JV1884                          STATION RECOVERY (2001)
 JV1884
 JV1884'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1884'RECOVERED AS DESCRIBED.
 JV1884
 JV1884                          STATION RECOVERY (2008)
 JV1884
 JV1884'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV1884'RECOVERED IN GOOD CONDITION.
 JV1884
 JV1884                          STATION RECOVERY (2017)
 JV1884
 JV1884'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 JV1884'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1860 ***********************************************************************
 JV1860  DESIGNATION -  403
 JV1860  PID         -  JV1860
 JV1860  STATE/COUNTY-  MD/FREDERICK
 JV1860  COUNTRY     -  US
 JV1860  USGS QUAD   -  UNION BRIDGE (2016)
 JV1860
 JV1860                         *CURRENT SURVEY CONTROL
 JV1860  ______________________________________________________________________
 JV1860* NAD 83(1986) POSITION- 39 35 20.     (N) 077 14 31.     (W)   SCALED
 JV1860* NAVD 88 ORTHO HEIGHT -   122.475 (meters)      401.82  (feet) ADJUSTED
 JV1860  ______________________________________________________________________
 JV1860  GEOID HEIGHT    -        -32.850 (meters)                     GEOID18
 JV1860  DYNAMIC HEIGHT  -        122.409 (meters)      401.60  (feet) COMP
 JV1860  MODELED GRAVITY -    980,088.6   (mgal)                       NAVD 88
 JV1860
 JV1860  VERT ORDER      -  SECOND    CLASS 0
 JV1860
 JV1860.The horizontal coordinates were scaled from a map and have
 JV1860.an estimated accuracy of +/- 6 seconds.
 JV1860
 JV1860.The orthometric height was determined by differential leveling and
 JV1860.adjusted by the NATIONAL GEODETIC SURVEY
 JV1860.in June 1991.
 JV1860
 JV1860.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1860.GEOID18 height accuracy estimate available here.
 JV1860
 JV1860.Click photographs - Photos may exist for this station.
 JV1860
 JV1860.The dynamic height is computed by dividing the NAVD 88
 JV1860.geopotential number by the normal gravity value computed on the
 JV1860.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1860.degrees latitude (g = 980.6199 gals.).
 JV1860
 JV1860.The modeled gravity was interpolated from observed gravity values.
 JV1860
 JV1860;                    North         East    Units  Estimated Accuracy
 JV1860;SPC MD       -   213,410.      379,220.      MT  (+/- 180 meters Scaled)
 JV1860
 JV1860_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ074845(NAD 83)
 JV1860
 JV1860                          SUPERSEDED SURVEY CONTROL
 JV1860
 JV1860  NGVD 29 (11/26/84)  122.683  (m)          402.50   (f) ADJUSTED    2 0
 JV1860
 JV1860.Superseded values are not recommended for survey control.
 JV1860
 JV1860.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1860.See file dsdata.pdf to determine how the superseded data were derived.
 JV1860
 JV1860_MARKER: DB = BENCH MARK DISK
 JV1860_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1860_SP_SET: BRIDGE
 JV1860_STAMPING: 403
 JV1860_MARK LOGO: USGS
 JV1860_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1860
 JV1860  HISTORY     - Date     Condition        Report By
 JV1860  HISTORY     - UNK      MONUMENTED       USGS
 JV1860  HISTORY     - 1935     GOOD             CGS
 JV1860  HISTORY     - 1942     GOOD             CGS
 JV1860
 JV1860                          STATION DESCRIPTION
 JV1860
 JV1860'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1860'0.8 MI SW FROM KEYMAR.
 JV1860'IN FREDERICK COUNTY, ABOUT 0.8 MILE SOUTHWEST ALONG THE
 JV1860'PENNSYLVANIA RAILROAD FROM THE WESTERN MARYLAND RAILWAY STATION AT
 JV1860'KEYMAR, CARROLL COUNTY, AT THE FREDERICK-CARROLL COUNTY LINE, AT
 JV1860'BRIDGE 52.61 OVER LITTLE PIPE CREEK, IN THE TOP OF THE SOUTHEAST
 JV1860'WING WALL, AND 12 FEET EAST OF THE CENTER LINE OF THE TRACK.
 JV1860'A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 403.
 JV1860
 JV1860                          STATION RECOVERY (1942)
 JV1860
 JV1860'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV1860'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5601 ***********************************************************************
 AE5601  DESIGNATION -  4032 BOLT
 AE5601  PID         -  AE5601
 AE5601  STATE/COUNTY-  MD/BALTIMORE
 AE5601  COUNTRY     -  US
 AE5601  USGS QUAD   -  BALTIMORE WEST (2016)
 AE5601
 AE5601                         *CURRENT SURVEY CONTROL
 AE5601  ______________________________________________________________________
 AE5601* NAD 83(1986) POSITION- 39 22 25.     (N) 076 43 19.     (W)   SCALED
 AE5601* NAVD 88 ORTHO HEIGHT -   154.693 (meters)      507.52  (feet) ADJUSTED
 AE5601  ______________________________________________________________________
 AE5601  GEOID HEIGHT    -        -32.293 (meters)                     GEOID18
 AE5601  DYNAMIC HEIGHT  -        154.612 (meters)      507.26  (feet) COMP
 AE5601  MODELED GRAVITY -    980,097.1   (mgal)                       NAVD 88
 AE5601
 AE5601  VERT ORDER      -  SECOND    CLASS II
 AE5601
 AE5601.The horizontal coordinates were scaled from a map and have
 AE5601.an estimated accuracy of +/- 6 seconds.
 AE5601
 AE5601.The orthometric height was determined by differential leveling and
 AE5601.adjusted by the NATIONAL GEODETIC SURVEY
 AE5601.in February 1998.
 AE5601
 AE5601.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5601.GEOID18 height accuracy estimate available here.
 AE5601
 AE5601.Click photographs - Photos may exist for this station.
 AE5601
 AE5601.The dynamic height is computed by dividing the NAVD 88
 AE5601.geopotential number by the normal gravity value computed on the
 AE5601.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5601.degrees latitude (g = 980.6199 gals.).
 AE5601
 AE5601.The modeled gravity was interpolated from observed gravity values.
 AE5601
 AE5601;                    North         East    Units  Estimated Accuracy
 AE5601;SPC MD       -   189,520.      423,960.      MT  (+/- 180 meters Scaled)
 AE5601
 AE5601_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ516596(NAD 83)
 AE5601
 AE5601                          SUPERSEDED SURVEY CONTROL
 AE5601
 AE5601.No superseded survey control is available for this station.
 AE5601
 AE5601_MARKER: B = BOLT
 AE5601_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 AE5601+WITH SETTING: PAVEMENT
 AE5601_SP_SET: LIGHT POLE BASE
 AE5601_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE5601_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE5601+STABILITY: SURFACE MOTION
 AE5601
 AE5601  HISTORY     - Date     Condition        Report By
 AE5601  HISTORY     - 1996     MONUMENTED       MCCRON
 AE5601  HISTORY     - 20100719 GOOD             JARICE
 AE5601
 AE5601                          STATION DESCRIPTION
 AE5601
 AE5601'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5601'STATION IS LOCATED ABOUT 7.75 MI (12.47 KM) NORTHWEST OF BALTIMORE AT
 AE5601'PIKESVILLE.  TO REACH THE STATION FROM THE CENTER OF THE ROUTE 140
 AE5601'(REISTERSTOWN ROAD) OVERPASS BRIDGE OVER I-695 (BELTWAY) GO SOUTHEAST
 AE5601'ON ROUTE 140 FOR 0.95 MI (1.53 KM) TO THE INTERSECTION WITH SUDBROOK
 AE5601'LANE AND THE STATION ON THE LEFT.  STATION MARK IS THE SOUTHWEST BOLT
 AE5601'IN THE BASE OF A TRAFFIC CONTROL SIGNAL LIGHT POLE NO.  905.  IT IS
 AE5601'39.0 FT (11.9 M) NORTHWEST OF THE CENTERLINE OF SUDBROOK LANE, 32.6 FT
 AE5601'(9.9 M) NORTHEAST OF THE CENTERLINE OF REISTERSTOWN ROAD, AND 26.0 FT
 AE5601'(7.9 M) SOUTHWEST OF POWER POLE NO.  335604.
 AE5601
 AE5601                          STATION RECOVERY (2010)
 AE5601
 AE5601'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 AE5601'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3610 ***********************************************************************
 JV3610  DESIGNATION -  404
 JV3610  PID         -  JV3610
 JV3610  STATE/COUNTY-  MD/WASHINGTON
 JV3610  COUNTRY     -  US
 JV3610  USGS QUAD   -  KEEDYSVILLE (2016)
 JV3610
 JV3610                         *CURRENT SURVEY CONTROL
 JV3610  ______________________________________________________________________
 JV3610* NAD 83(1986) POSITION- 39 29 17.1    (N) 077 41 55.4    (W)   HD_HELD2
 JV3610* NAVD 88 ORTHO HEIGHT -   122.836 (meters)      403.00  (feet) ADJUSTED
 JV3610  ______________________________________________________________________
 JV3610  GEOID HEIGHT    -        -33.754 (meters)                     GEOID18
 JV3610  DYNAMIC HEIGHT  -        122.763 (meters)      402.76  (feet) COMP
 JV3610  MODELED GRAVITY -    980,039.1   (mgal)                       NAVD 88
 JV3610
 JV3610  VERT ORDER      -  FIRST     CLASS II
 JV3610
 JV3610.The horizontal coordinates were established by autonomous hand held GPS
 JV3610.observations and have an estimated accuracy of +/- 10 meters.
 JV3610
 JV3610.The orthometric height was determined by differential leveling and
 JV3610.adjusted by the NATIONAL GEODETIC SURVEY
 JV3610.in June 1991.
 JV3610
 JV3610.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3610.GEOID18 height accuracy estimate available here.
 JV3610
 JV3610.Click photographs - Photos may exist for this station.
 JV3610
 JV3610.The dynamic height is computed by dividing the NAVD 88
 JV3610.geopotential number by the normal gravity value computed on the
 JV3610.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3610.degrees latitude (g = 980.6199 gals.).
 JV3610
 JV3610.The modeled gravity was interpolated from observed gravity values.
 JV3610
 JV3610;                    North         East    Units  Estimated Accuracy
 JV3610;SPC MD       -   202,422.      339,890.      MT  (+/- 10 meters HH2 GPS)
 JV3610
 JV3610_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6791074419(NAD 83)
 JV3610
 JV3610                          SUPERSEDED SURVEY CONTROL
 JV3610
 JV3610  NGVD 29 (11/26/84)  123.034  (m)          403.65   (f) ADJUSTED    1 2
 JV3610
 JV3610.Superseded values are not recommended for survey control.
 JV3610
 JV3610.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3610.See file dsdata.pdf to determine how the superseded data were derived.
 JV3610
 JV3610_MARKER: DB = BENCH MARK DISK
 JV3610_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3610_SP_SET: BUILDING
 JV3610_STAMPING: MARYLAND 404 ADJ
 JV3610_MARK LOGO: USGS
 JV3610_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3610_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3610+SATELLITE: SATELLITE OBSERVATIONS - April 22, 2020
 JV3610
 JV3610  HISTORY     - Date     Condition        Report By
 JV3610  HISTORY     - 1907     MONUMENTED       USGS
 JV3610  HISTORY     - 1942     GOOD             CGS
 JV3610  HISTORY     - 1978     GOOD             NGS
 JV3610  HISTORY     - 1979     GOOD             NGS
 JV3610  HISTORY     - 20060508 GOOD             GEOCAC
 JV3610  HISTORY     - 20200422 GOOD             WSRR
 JV3610
 JV3610                          STATION DESCRIPTION
 JV3610
 JV3610'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3610'AT KEEDYSVILLE.
 JV3610'AT KEEDYSVILLE, WASHINGTON COUNTY, ON STATE HIGHWAY 34, AT THE
 JV3610'LINE HOTEL, IN THE WEST WALL OF THE BUILDING, 41 FEET
 JV3610'NORTH OF THE NORTH RAIL OF THE BALTIMORE AND OHIO RAILROAD
 JV3610'TRACK, AND 2.2 FEET ABOVE THE GROUND.  A UNITED STATES GEOLOGICAL
 JV3610'SURVEY STANDARD DISK, STAMPED MARYLAND 404 ADJ AND SET
 JV3610'VERTICALLY.
 JV3610
 JV3610                          STATION RECOVERY (1978)
 JV3610
 JV3610'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
 JV3610'RECOVERED IN GOOD CONDITION.
 JV3610
 JV3610                          STATION RECOVERY (1979)
 JV3610
 JV3610'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3610'RECOVERED IN GOOD CONDITION.
 JV3610
 JV3610                          STATION RECOVERY (2006)
 JV3610
 JV3610'RECOVERY NOTE BY GEOCACHING 2006 (DPB)
 JV3610'RECOVERED IN GOOD CONDITION.
 JV3610
 JV3610                          STATION RECOVERY (2020)
 JV3610
 JV3610'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV3610'THE STATION IS IN THE CENTER OF THE FRONT WALL OF THE APARTMENT
 JV3610'BUILDING AT 2 MAIN STREET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2948 ***********************************************************************
 JV2948  DESIGNATION -  411+50
 JV2948  PID         -  JV2948
 JV2948  STATE/COUNTY-  MD/WASHINGTON
 JV2948  COUNTRY     -  US
 JV2948  USGS QUAD   -  KEEDYSVILLE (2016)
 JV2948
 JV2948                         *CURRENT SURVEY CONTROL
 JV2948  ______________________________________________________________________
 JV2948* NAD 83(1986) POSITION- 39 25 32.     (N) 077 40 40.     (W)   SCALED
 JV2948* NAVD 88 ORTHO HEIGHT -   186.669 (meters)      612.43  (feet) ADJUSTED
 JV2948  ______________________________________________________________________
 JV2948  GEOID HEIGHT    -        -33.491 (meters)                     GEOID18
 JV2948  DYNAMIC HEIGHT  -        186.559 (meters)      612.07  (feet) COMP
 JV2948  MODELED GRAVITY -    980,033.4   (mgal)                       NAVD 88
 JV2948
 JV2948  VERT ORDER      -  FIRST     CLASS II
 JV2948
 JV2948.The horizontal coordinates were scaled from a map and have
 JV2948.an estimated accuracy of +/- 6 seconds.
 JV2948
 JV2948.The orthometric height was determined by differential leveling and
 JV2948.adjusted by the NATIONAL GEODETIC SURVEY
 JV2948.in June 1991.
 JV2948
 JV2948.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2948.GEOID18 height accuracy estimate available here.
 JV2948
 JV2948.Click photographs - Photos may exist for this station.
 JV2948
 JV2948.The dynamic height is computed by dividing the NAVD 88
 JV2948.geopotential number by the normal gravity value computed on the
 JV2948.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2948.degrees latitude (g = 980.6199 gals.).
 JV2948
 JV2948.The modeled gravity was interpolated from observed gravity values.
 JV2948
 JV2948;                    North         East    Units  Estimated Accuracy
 JV2948;SPC MD       -   195,470.      341,640.      MT  (+/- 180 meters Scaled)
 JV2948
 JV2948_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ695674(NAD 83)
 JV2948
 JV2948                          SUPERSEDED SURVEY CONTROL
 JV2948
 JV2948  NGVD 29 (11/26/84)  186.864  (m)          613.07   (f) ADJUSTED    1 2
 JV2948
 JV2948.Superseded values are not recommended for survey control.
 JV2948
 JV2948.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2948.See file dsdata.pdf to determine how the superseded data were derived.
 JV2948
 JV2948_MARKER: Q = CHISELED SQUARE
 JV2948_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2948_SP_SET: CULVERT
 JV2948_MARK LOGO: BORR
 JV2948_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2948
 JV2948  HISTORY     - Date     Condition        Report By
 JV2948  HISTORY     - UNK      MONUMENTED       BORR
 JV2948  HISTORY     - 1934     GOOD             CGS
 JV2948
 JV2948                          STATION DESCRIPTION
 JV2948
 JV2948'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JV2948'4.6 MI S FROM KEEDYSVILLE.
 JV2948'4.6 MILES SOUTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2948'STATION AT KEEDYSVILLE, WASHINGTON COUNTY, 1,070 FEET SOUTH OF
 JV2948'MILEPOST W 8-H 16, AT A STONE BOX CULVERT, ON THE SOUTH END OF
 JV2948'THE EAST HEADWALL, 1.5 FEET FROM THE EAST EDGE OF A STONE,
 JV2948'AND 1.8 FEET FROM SOUTH EDGE.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1200 ***********************************************************************
 JV1200  DESIGNATION -  4114 C OF B
 JV1200  PID         -  JV1200
 JV1200  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1200  COUNTRY     -  US
 JV1200  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1200
 JV1200                         *CURRENT SURVEY CONTROL
 JV1200  ______________________________________________________________________
 JV1200* NAD 83(1986) POSITION- 39 20 43.     (N) 076 38 53.     (W)   SCALED
 JV1200* NAVD 88 ORTHO HEIGHT -    54.626 (meters)      179.22  (feet) ADJUSTED
 JV1200  ______________________________________________________________________
 JV1200  GEOID HEIGHT    -        -32.522 (meters)                     GEOID18
 JV1200  DYNAMIC HEIGHT  -         54.597 (meters)      179.12  (feet) COMP
 JV1200  MODELED GRAVITY -    980,102.6   (mgal)                       NAVD 88
 JV1200
 JV1200  VERT ORDER      -  SECOND    CLASS 0
 JV1200
 JV1200.The horizontal coordinates were scaled from a map and have
 JV1200.an estimated accuracy of +/- 6 seconds.
 JV1200
 JV1200.The orthometric height was determined by differential leveling and
 JV1200.adjusted by the NATIONAL GEODETIC SURVEY
 JV1200.in June 1991.
 JV1200
 JV1200.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1200.GEOID18 height accuracy estimate available here.
 JV1200
 JV1200.Click photographs - Photos may exist for this station.
 JV1200
 JV1200.The dynamic height is computed by dividing the NAVD 88
 JV1200.geopotential number by the normal gravity value computed on the
 JV1200.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1200.degrees latitude (g = 980.6199 gals.).
 JV1200
 JV1200.The modeled gravity was interpolated from observed gravity values.
 JV1200
 JV1200;                    North         East    Units  Estimated Accuracy
 JV1200;SPC MD       -   186,400.      430,340.      MT  (+/- 180 meters Scaled)
 JV1200
 JV1200_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ579563(NAD 83)
 JV1200
 JV1200                          SUPERSEDED SURVEY CONTROL
 JV1200
 JV1200  NGVD 29 (11/26/84)   54.856  (m)          179.97   (f) ADJUSTED    2 0
 JV1200
 JV1200.Superseded values are not recommended for survey control.
 JV1200
 JV1200.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1200.See file dsdata.pdf to determine how the superseded data were derived.
 JV1200
 JV1200_MARKER: Z = SEE DESCRIPTION
 JV1200_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1200_SP_SET: SIGNAL TOWER
 JV1200_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1200
 JV1200  HISTORY     - Date     Condition        Report By
 JV1200  HISTORY     - UNK      MONUMENTED       MD0050
 JV1200  HISTORY     - 1935     GOOD             CGS
 JV1200
 JV1200                          STATION DESCRIPTION
 JV1200
 JV1200'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1200'AT BALTIMORE.
 JV1200'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, ON THE EAST SIDE OF
 JV1200'THE TRACK, OPPOSITE THE OLD MELVALE DISTILLERY, AND IN THE TOP
 JV1200'OF THE NORTHWEST CORNER OF THE BASE OF SIGNAL TOWER 43.  A BRASS
 JV1200'SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1794 ***********************************************************************
 HV1794  DESIGNATION -  412 WSSC
 HV1794  PID         -  HV1794
 HV1794  STATE/COUNTY-  MD/MONTGOMERY
 HV1794  COUNTRY     -  US
 HV1794  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1794
 HV1794                         *CURRENT SURVEY CONTROL
 HV1794  ______________________________________________________________________
 HV1794* NAD 83(1986) POSITION- 38 59 41.     (N) 077 04 33.     (W)   SCALED
 HV1794* NAVD 88 ORTHO HEIGHT -    75.022 (meters)      246.13  (feet) ADJUSTED
 HV1794  ______________________________________________________________________
 HV1794  GEOID HEIGHT    -        -31.901 (meters)                     GEOID18
 HV1794  DYNAMIC HEIGHT  -         74.981 (meters)      246.00  (feet) COMP
 HV1794  MODELED GRAVITY -    980,087.0   (mgal)                       NAVD 88
 HV1794
 HV1794  VERT ORDER      -  FIRST     CLASS II
 HV1794
 HV1794.The horizontal coordinates were scaled from a map and have
 HV1794.an estimated accuracy of +/- 6 seconds.
 HV1794
 HV1794.The orthometric height was determined by differential leveling and
 HV1794.adjusted by the NATIONAL GEODETIC SURVEY
 HV1794.in June 1991.
 HV1794
 HV1794.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1794.GEOID18 height accuracy estimate available here.
 HV1794
 HV1794.Click photographs - Photos may exist for this station.
 HV1794
 HV1794.The dynamic height is computed by dividing the NAVD 88
 HV1794.geopotential number by the normal gravity value computed on the
 HV1794.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1794.degrees latitude (g = 980.6199 gals.).
 HV1794
 HV1794.The modeled gravity was interpolated from observed gravity values.
 HV1794
 HV1794;                    North         East    Units  Estimated Accuracy
 HV1794;SPC MD       -   147,420.      393,430.      MT  (+/- 180 meters Scaled)
 HV1794
 HV1794_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ202182(NAD 83)
 HV1794
 HV1794                          SUPERSEDED SURVEY CONTROL
 HV1794
 HV1794  NGVD 29 (11/26/84)   75.235  (m)          246.83   (f) ADJUSTED    1 2
 HV1794
 HV1794.Superseded values are not recommended for survey control.
 HV1794
 HV1794.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1794.See file dsdata.pdf to determine how the superseded data were derived.
 HV1794
 HV1794_MARKER: Q = CHISELED SQUARE
 HV1794_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1794_SP_SET: BRIDGE
 HV1794_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1794
 HV1794  HISTORY     - Date     Condition        Report By
 HV1794  HISTORY     - UNK      MONUMENTED       WSSC
 HV1794  HISTORY     - 1933     GOOD             CGS
 HV1794  HISTORY     - 19950804 MARK NOT FOUND   USPSQD
 HV1794  HISTORY     - 19950815 GOOD             USPSQD
 HV1794  HISTORY     - 20000617 GOOD             USPSQD
 HV1794
 HV1794                          STATION DESCRIPTION
 HV1794
 HV1794'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1794'AT CHEVY CHASE LAKE.
 HV1794'AT CHEVY CHASE LAKE, MONTGOMERY COUNTY, ON THE GEORGETOWN
 HV1794'BRANCH OF THE BALTIMORE AND OHIO RAILROAD, 400 FEET EAST OF
 HV1794'CONNECTICUT AVENUE, 150 FEET NORTHEAST OF AN OLD POWERHOUSE,
 HV1794'AT BRIDGE NO. 3, AT THE EAST STONE ABUTMENT, ON THE NORTHEAST
 HV1794'CORNER OF THE NORTH WING WALL, 10 FEET NORTH OF THE CENTERLINE
 HV1794'OF THE TRACK, AND ABOUT 1/2 FOOT BELOW THE TOP OF THE RAIL.
 HV1794'A CHISELED SQUARE.
 HV1794
 HV1794                          STATION RECOVERY (1995)
 HV1794
 HV1794'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV1794'MARK NOT FOUND.
 HV1794
 HV1794                          STATION RECOVERY (1995)
 HV1794
 HV1794'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV1794'RECOVERED IN GOOD CONDITION.
 HV1794
 HV1794                          STATION RECOVERY (2000)
 HV1794
 HV1794'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV1794'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1802 ***********************************************************************
 HV1802  DESIGNATION -  413 WSSC
 HV1802  PID         -  HV1802
 HV1802  STATE/COUNTY-  MD/MONTGOMERY
 HV1802  COUNTRY     -  US
 HV1802  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1802
 HV1802                         *CURRENT SURVEY CONTROL
 HV1802  ______________________________________________________________________
 HV1802* NAD 83(1986) POSITION- 38 58 56.     (N) 077 05 37.     (W)   SCALED
 HV1802* NAVD 88 ORTHO HEIGHT -    98.964 (meters)      324.68  (feet) ADJUSTED
 HV1802  ______________________________________________________________________
 HV1802  GEOID HEIGHT    -        -31.882 (meters)                     GEOID18
 HV1802  DYNAMIC HEIGHT  -         98.911 (meters)      324.51  (feet) COMP
 HV1802  MODELED GRAVITY -    980,087.9   (mgal)                       NAVD 88
 HV1802
 HV1802  VERT ORDER      -  FIRST     CLASS II
 HV1802
 HV1802.The horizontal coordinates were scaled from a map and have
 HV1802.an estimated accuracy of +/- 6 seconds.
 HV1802
 HV1802.The orthometric height was determined by differential leveling and
 HV1802.adjusted by the NATIONAL GEODETIC SURVEY
 HV1802.in June 1991.
 HV1802
 HV1802.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1802.GEOID18 height accuracy estimate available here.
 HV1802
 HV1802.Click photographs - Photos may exist for this station.
 HV1802
 HV1802.The dynamic height is computed by dividing the NAVD 88
 HV1802.geopotential number by the normal gravity value computed on the
 HV1802.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1802.degrees latitude (g = 980.6199 gals.).
 HV1802
 HV1802.The modeled gravity was interpolated from observed gravity values.
 HV1802
 HV1802;                    North         East    Units  Estimated Accuracy
 HV1802;SPC MD       -   146,040.      391,890.      MT  (+/- 180 meters Scaled)
 HV1802
 HV1802_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ186168(NAD 83)
 HV1802
 HV1802                          SUPERSEDED SURVEY CONTROL
 HV1802
 HV1802  NGVD 29 (11/26/84)   99.177  (m)          325.38   (f) ADJUSTED    1 2
 HV1802
 HV1802.Superseded values are not recommended for survey control.
 HV1802
 HV1802.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1802.See file dsdata.pdf to determine how the superseded data were derived.
 HV1802
 HV1802_MARKER: Q = CHISELED SQUARE
 HV1802_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1802_SP_SET: PEDESTAL
 HV1802_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1802
 HV1802  HISTORY     - Date     Condition        Report By
 HV1802  HISTORY     - UNK      MONUMENTED       WSSC
 HV1802  HISTORY     - 1933     GOOD             CGS
 HV1802  HISTORY     - 1957     GOOD             CGS
 HV1802  HISTORY     - 20020312 MARK NOT FOUND   USPSQD
 HV1802
 HV1802                          STATION DESCRIPTION
 HV1802
 HV1802'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1802'AT BETHESDA.
 HV1802'AT BETHESDA, MONTGOMERY COUNTY, ON THE GEORGETOWN BRANCH OF
 HV1802'THE BALTIMORE AND OHIO RAILROAD, AT THE WISCONSIN AVENUE OVERPASS
 HV1802'(BRIDGE NO. 5 A), ON THE WESTERNMOST CONCRETE PEDESTAL, ON THE
 HV1802'NORTHWEST CORNER OF THE PEDESTAL, 12 FEET SOUTH OF THE CENTERLINE
 HV1802'OF THE TRACK, AND ABOUT 1-1/2 FEET ABOVE THE TOP OF THE RAIL.
 HV1802'A CHISELED SQUARE.
 HV1802
 HV1802                          STATION RECOVERY (1957)
 HV1802
 HV1802'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957
 HV1802'RECOVERED IN GOOD CONDITION.
 HV1802
 HV1802                          STATION RECOVERY (2002)
 HV1802
 HV1802'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV1802'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1810 ***********************************************************************
 HV1810  DESIGNATION -  415 WSSC
 HV1810  PID         -  HV1810
 HV1810  STATE/COUNTY-  MD/MONTGOMERY
 HV1810  COUNTRY     -  US
 HV1810  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1810
 HV1810                         *CURRENT SURVEY CONTROL
 HV1810  ______________________________________________________________________
 HV1810* NAD 83(1986) POSITION- 38 57 44.     (N) 077 06 15.     (W)   SCALED
 HV1810* NAVD 88 ORTHO HEIGHT -    67.772 (meters)      222.35  (feet) ADJUSTED
 HV1810  ______________________________________________________________________
 HV1810  GEOID HEIGHT    -        -31.890 (meters)                     GEOID18
 HV1810  DYNAMIC HEIGHT  -         67.735 (meters)      222.23  (feet) COMP
 HV1810  MODELED GRAVITY -    980,088.3   (mgal)                       NAVD 88
 HV1810
 HV1810  VERT ORDER      -  FIRST     CLASS II
 HV1810
 HV1810.The horizontal coordinates were scaled from a map and have
 HV1810.an estimated accuracy of +/- 6 seconds.
 HV1810
 HV1810.The orthometric height was determined by differential leveling and
 HV1810.adjusted by the NATIONAL GEODETIC SURVEY
 HV1810.in June 1991.
 HV1810
 HV1810.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1810.GEOID18 height accuracy estimate available here.
 HV1810
 HV1810.Click photographs - Photos may exist for this station.
 HV1810
 HV1810.The dynamic height is computed by dividing the NAVD 88
 HV1810.geopotential number by the normal gravity value computed on the
 HV1810.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1810.degrees latitude (g = 980.6199 gals.).
 HV1810
 HV1810.The modeled gravity was interpolated from observed gravity values.
 HV1810
 HV1810;                    North         East    Units  Estimated Accuracy
 HV1810;SPC MD       -   143,820.      390,970.      MT  (+/- 180 meters Scaled)
 HV1810
 HV1810_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ176146(NAD 83)
 HV1810
 HV1810                          SUPERSEDED SURVEY CONTROL
 HV1810
 HV1810  NGVD 29 (11/26/84)   67.985  (m)          223.05   (f) ADJUSTED    1 2
 HV1810
 HV1810.Superseded values are not recommended for survey control.
 HV1810
 HV1810.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1810.See file dsdata.pdf to determine how the superseded data were derived.
 HV1810
 HV1810_MARKER: Q = CHISELED SQUARE
 HV1810_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1810_SP_SET: BRIDGE
 HV1810_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1810
 HV1810  HISTORY     - Date     Condition        Report By
 HV1810  HISTORY     - UNK      MONUMENTED       WSSC
 HV1810  HISTORY     - 1933     GOOD             CGS
 HV1810  HISTORY     - 1953     GOOD             USGS
 HV1810
 HV1810                          STATION DESCRIPTION
 HV1810
 HV1810'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1810'AT SOMERSET.
 HV1810'AT SOMERSET, MONTGOMERY COUNTY, ON THE GEORGETOWN BRANCH OF THE
 HV1810'BALTIMORE AND OHIO RAILROAD, 800 FEET SOUTH OF THE RIVER ROAD
 HV1810'CROSSING, 150 FEET WEST OF THE TWELVE STORAGE TANKS OF THE
 HV1810'LOUGHBOROUGH OIL CO., 21 FEET SOUTH OF THE POINT OF SWITCH OF THE
 HV1810'SIDING SERVING THE LOUGHBOROUGH OIL PIT, 15 FEET EAST OF THE
 HV1810'CENTERLINE OF THE TRACK, AT CONCRETE BRIDGE NO. 9, ON THE
 HV1810'NORTHEAST CORNER OF THE NORTH END OF THE EAST HEADWALL, AND ABOUT
 HV1810'5-1/2 FEET BELOW THE TOP OF THE RAIL.  A CHISELED SQUARE.
 HV1810
 HV1810                          STATION RECOVERY (1953)
 HV1810
 HV1810'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV1810'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7831 ***********************************************************************
 DR7831  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7831  DESIGNATION -  42
 DR7831  PID         -  DR7831
 DR7831  STATE/COUNTY-  MD/QUEEN ANNES
 DR7831  COUNTRY     -  US
 DR7831  USGS QUAD   -  CHESTERTOWN (2017)
 DR7831
 DR7831                         *CURRENT SURVEY CONTROL
 DR7831  ______________________________________________________________________
 DR7831* NAD 83(2011) POSITION- 39 11 41.61516(N) 076 03 31.73564(W)   ADJUSTED
 DR7831* NAD 83(2011) ELLIP HT-   -24.521 (meters)        (02/02/22)   ADJUSTED
 DR7831* NAD 83(2011) EPOCH   -  2010.00
 DR7831* NAVD 88 ORTHO HEIGHT -     8.95  (meters)       29.4   (feet) GPS OBS
 DR7831  ______________________________________________________________________
 DR7831  GEOID HEIGHT    -        -33.473 (meters)                     GEOID18
 DR7831  NAD 83(2011) X  -  1,192,501.318 (meters)                     COMP
 DR7831  NAD 83(2011) Y  - -4,803,863.967 (meters)                     COMP
 DR7831  NAD 83(2011) Z  -  4,009,093.065 (meters)                     COMP
 DR7831  LAPLACE CORR    -         -2.24  (seconds)                    DEFLEC18
 DR7831
 DR7831  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7831  Standards:
 DR7831         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7831            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7831  -------------------------------------------------------------------
 DR7831  NETWORK    0.80   1.92           0.36   0.29   0.98      0.06359177
 DR7831  -------------------------------------------------------------------
 DR7831  Click here for local accuracies and other accuracy information.
 DR7831
 DR7831.The horizontal coordinates were established by GPS observations
 DR7831.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7831
 DR7831.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7831.been affixed to the stable North American tectonic plate. See 
 DR7831.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7831
 DR7831.The horizontal coordinates are valid at the epoch date displayed above
 DR7831.which is a decimal equivalence of Year/Month/Day.
 DR7831
 DR7831.The orthometric height was determined by GPS observations and a
 DR7831.high-resolution geoid model using precise GPS observation and
 DR7831.processing techniques.
 DR7831
 DR7831.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7831.GEOID18 height accuracy estimate available here.
 DR7831
 DR7831.Click photographs - Photos may exist for this station.
 DR7831
 DR7831.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7831
 DR7831.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7831
 DR7831.The ellipsoidal height was determined by GPS observations
 DR7831.and is referenced to NAD 83.
 DR7831
 DR7831. The following values were computed from the NAD 83(2011) position.
 DR7831
 DR7831;                    North         East     Units Scale Factor Converg.
 DR7831;SPC MD       -   170,060.929   481,303.031   MT  0.99996532   +0 35 26.6
 DR7831;SPC MD       -   557,941.56  1,579,075.03   sFT  0.99996532   +0 35 26.6
 DR7831;UTM  18      - 4,338,938.381   408,566.307   MT  0.99970294   -0 40 09.0
 DR7831
 DR7831!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7831!SPC MD       -   1.00000385  x   0.99996532  =   0.99996917
 DR7831!UTM  18      -   1.00000385  x   0.99970294  =   0.99970679
 DR7831
 DR7831_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0856638938(NAD 83)
 DR7831
 DR7831                          SUPERSEDED SURVEY CONTROL
 DR7831
 DR7831.No superseded survey control is available for this station.
 DR7831
 DR7831_MARKER: DD = SURVEY DISK
 DR7831_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7831_STAMPING: 42
 DR7831_MARK LOGO: MD-035
 DR7831_PROJECTION: RECESSED 6 CENTIMETERS
 DR7831_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7831+STABILITY: SURFACE MOTION
 DR7831_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7831+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7831
 DR7831  HISTORY     - Date     Condition        Report By
 DR7831  HISTORY     - UNK      MONUMENTED       MD-035
 DR7831  HISTORY     - 20210309 GOOD             MDSHA
 DR7831
 DR7831                          STATION DESCRIPTION
 DR7831
 DR7831'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7831'THE MARK IS LOCATED ABOUT 5.4 MI (8.7 KM) NORTHWEST OF CHURCH HILL,
 DR7831'1.1 MI (1.8 KM) SOUTH-SOUTHEAST OF CHESTERTOWN AND 0.8 MI (1.3 KM)
 DR7831'SOUTH-SOUTHWEST OF KINGSTON.
 DR7831'
 DR7831'TO REACH FROM THE JUNCTION OF MD 291 AND MD 213, GO SOUTH-SOUTHEAST ON
 DR7831'MD 213 FOR 0.85 MI (1.37 KM) TO AN INTERSECTION.  TURN LEFT AND GO
 DR7831'SOUTH-SOUTHEAST ON WASHINGTON AVENUE WHICH TURNS SLIGHTLY LEFT AND
 DR7831'BECOMES MAPLE AVENUE FOR 0.31 MI (0.50 KM) TO AN INTERSECTION.
 DR7831'CONTINUE STRAIGHT AHEAD ON MD 213 (CHESTERTOWN-CHURCH HILL ROAD) FOR
 DR7831'0.49 MI (0.79 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DR7831'SOUTH-SOUTHWEST ON TRUSLOW ROAD FOR 0.78 MI (1.26 KM) TO THE
 DR7831'INTERSECTION OF HOLLY COURT AND THE MARK ON THE LEFT IN THE EAST ANGLE
 DR7831'OF THE INTERSECTION.
 DR7831'
 DR7831'THE MARK IS 79.6 FT (24.3 M) EAST OF AN ELECTRICAL TRANSFORMER BOX
 DR7831'NUMBERED 34023-23462, 35.9 FT (10.9 M) SOUTHEAST OF THE CENTERLINE OF
 DR7831'TRUSLOW ROAD, 32.0 FT (9.8 M) NORTHEAST OF THE CENTERLINE OF HOLLY
 DR7831'COURT, 2.6 FT (0.8 M) NORTHWEST OF THE NORTHWEST CORNER OF A 2.5 FT
 DR7831'(0.8 M) X 1.4 FT (0.4 M) CABLE BOX AND SET IN THE TOP OF A 12-IN (30
 DR7831'CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0792 ***********************************************************************
 JV0792  DESIGNATION -  4246 C OF B
 JV0792  PID         -  JV0792
 JV0792  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0792  COUNTRY     -  US
 JV0792  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0792
 JV0792                         *CURRENT SURVEY CONTROL
 JV0792  ______________________________________________________________________
 JV0792* NAD 83(1986) POSITION- 39 20 12.     (N) 076 40 22.     (W)   SCALED
 JV0792* NAVD 88 ORTHO HEIGHT -   122.742 (meters)      402.70  (feet) ADJUSTED
 JV0792  ______________________________________________________________________
 JV0792  GEOID HEIGHT    -        -32.450 (meters)                     GEOID18
 JV0792  DYNAMIC HEIGHT  -        122.678 (meters)      402.49  (feet) COMP
 JV0792  MODELED GRAVITY -    980,106.1   (mgal)                       NAVD 88
 JV0792
 JV0792  VERT ORDER      -  SECOND    CLASS 0
 JV0792
 JV0792.The horizontal coordinates were scaled from a map and have
 JV0792.an estimated accuracy of +/- 6 seconds.
 JV0792
 JV0792.The orthometric height was determined by differential leveling and
 JV0792.adjusted by the NATIONAL GEODETIC SURVEY
 JV0792.in June 1991.
 JV0792
 JV0792.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0792.GEOID18 height accuracy estimate available here.
 JV0792
 JV0792.Click photographs - Photos may exist for this station.
 JV0792
 JV0792.The dynamic height is computed by dividing the NAVD 88
 JV0792.geopotential number by the normal gravity value computed on the
 JV0792.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0792.degrees latitude (g = 980.6199 gals.).
 JV0792
 JV0792.The modeled gravity was interpolated from observed gravity values.
 JV0792
 JV0792;                    North         East    Units  Estimated Accuracy
 JV0792;SPC MD       -   185,430.      428,210.      MT  (+/- 180 meters Scaled)
 JV0792
 JV0792_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ558554(NAD 83)
 JV0792
 JV0792                          SUPERSEDED SURVEY CONTROL
 JV0792
 JV0792  NGVD 29 (11/26/84)  122.967  (m)          403.43   (f) ADJUSTED    2 0
 JV0792
 JV0792.Superseded values are not recommended for survey control.
 JV0792
 JV0792.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0792.See file dsdata.pdf to determine how the superseded data were derived.
 JV0792
 JV0792_MARKER: Z = SEE DESCRIPTION
 JV0792_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0792_SP_SET: CULVERT
 JV0792_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0792
 JV0792  HISTORY     - Date     Condition        Report By
 JV0792  HISTORY     - UNK      MONUMENTED       MD0050
 JV0792  HISTORY     - 1935     GOOD             CGS
 JV0792
 JV0792                          STATION DESCRIPTION
 JV0792
 JV0792'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV0792'AT BALTIMORE.
 JV0792'(CITY OF BALTIMORE) IN WEST END OF CULVERT WALL, SOUTH SIDE
 JV0792'OF COLD SPRING LANE AND WEST SIDE OF WESTERN MARYLAND RAILROAD.
 JV0792'A BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0799 ***********************************************************************
 JV0799  DESIGNATION -  4270 C OF B
 JV0799  PID         -  JV0799
 JV0799  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0799  COUNTRY     -  US
 JV0799  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0799
 JV0799                         *CURRENT SURVEY CONTROL
 JV0799  ______________________________________________________________________
 JV0799* NAD 83(1986) POSITION- 39 18 22.     (N) 076 39 32.     (W)   SCALED
 JV0799* NAVD 88 ORTHO HEIGHT -    66.361 (meters)      217.72  (feet) ADJUSTED
 JV0799  ______________________________________________________________________
 JV0799  GEOID HEIGHT    -        -32.553 (meters)                     GEOID18
 JV0799  DYNAMIC HEIGHT  -         66.326 (meters)      217.60  (feet) COMP
 JV0799  MODELED GRAVITY -    980,107.3   (mgal)                       NAVD 88
 JV0799
 JV0799  VERT ORDER      -  SECOND    CLASS 0
 JV0799
 JV0799.The horizontal coordinates were scaled from a map and have
 JV0799.an estimated accuracy of +/- 6 seconds.
 JV0799
 JV0799.The orthometric height was determined by differential leveling and
 JV0799.adjusted by the NATIONAL GEODETIC SURVEY
 JV0799.in June 1991.
 JV0799
 JV0799.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0799.GEOID18 height accuracy estimate available here.
 JV0799
 JV0799.Click photographs - Photos may exist for this station.
 JV0799
 JV0799.The dynamic height is computed by dividing the NAVD 88
 JV0799.geopotential number by the normal gravity value computed on the
 JV0799.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0799.degrees latitude (g = 980.6199 gals.).
 JV0799
 JV0799.The modeled gravity was interpolated from observed gravity values.
 JV0799
 JV0799;                    North         East    Units  Estimated Accuracy
 JV0799;SPC MD       -   182,040.      429,420.      MT  (+/- 180 meters Scaled)
 JV0799
 JV0799_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ569520(NAD 83)
 JV0799
 JV0799                          SUPERSEDED SURVEY CONTROL
 JV0799
 JV0799  NGVD 29 (11/26/84)   66.586  (m)          218.46   (f) ADJUSTED    2 0
 JV0799
 JV0799.Superseded values are not recommended for survey control.
 JV0799
 JV0799.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0799.See file dsdata.pdf to determine how the superseded data were derived.
 JV0799
 JV0799_MARKER: Z = SEE DESCRIPTION
 JV0799_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0799_SP_SET: WATER TOWER
 JV0799_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0799
 JV0799  HISTORY     - Date     Condition        Report By
 JV0799  HISTORY     - UNK      MONUMENTED       MD0050
 JV0799  HISTORY     - 1935     GOOD             CGS
 JV0799  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV0799
 JV0799                          STATION DESCRIPTION
 JV0799
 JV0799'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV0799'AT BALTIMORE.
 JV0799'(CITY OF BALTIMORE) IN GUSSET PLATE OF NORTHWEST CORNER OF
 JV0799'NORTHWEST LEG OF WATER TOWER, 50 FEET SOUTH OF BAKER STREET ON
 JV0799'WEST SIDE OF WESTERN MARYLAND RAILROAD.  A CROSS CUT.
 JV0799
 JV0799                          STATION RECOVERY (2003)
 JV0799
 JV0799'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0799'NOT FOUND.  NOTE-- NO WATER TOWER WAS FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0793 ***********************************************************************
 JV0793  DESIGNATION -  4271 C OF B
 JV0793  PID         -  JV0793
 JV0793  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0793  COUNTRY     -  US
 JV0793  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0793
 JV0793                         *CURRENT SURVEY CONTROL
 JV0793  ______________________________________________________________________
 JV0793* NAD 83(1986) POSITION- 39 19 20.     (N) 076 39 54.     (W)   SCALED
 JV0793* NAVD 88 ORTHO HEIGHT -    97.489 (meters)      319.85  (feet) ADJUSTED
 JV0793  ______________________________________________________________________
 JV0793  GEOID HEIGHT    -        -32.501 (meters)                     GEOID18
 JV0793  DYNAMIC HEIGHT  -         97.438 (meters)      319.68  (feet) COMP
 JV0793  MODELED GRAVITY -    980,107.2   (mgal)                       NAVD 88
 JV0793
 JV0793  VERT ORDER      -  SECOND    CLASS 0
 JV0793
 JV0793.The horizontal coordinates were scaled from a map and have
 JV0793.an estimated accuracy of +/- 6 seconds.
 JV0793
 JV0793.The orthometric height was determined by differential leveling and
 JV0793.adjusted by the NATIONAL GEODETIC SURVEY
 JV0793.in June 1991.
 JV0793
 JV0793.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0793.GEOID18 height accuracy estimate available here.
 JV0793
 JV0793.Click photographs - Photos may exist for this station.
 JV0793
 JV0793.The dynamic height is computed by dividing the NAVD 88
 JV0793.geopotential number by the normal gravity value computed on the
 JV0793.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0793.degrees latitude (g = 980.6199 gals.).
 JV0793
 JV0793.The modeled gravity was interpolated from observed gravity values.
 JV0793
 JV0793;                    North         East    Units  Estimated Accuracy
 JV0793;SPC MD       -   183,830.      428,890.      MT  (+/- 180 meters Scaled)
 JV0793
 JV0793_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ564538(NAD 83)
 JV0793
 JV0793                          SUPERSEDED SURVEY CONTROL
 JV0793
 JV0793  NGVD 29 (11/26/84)   97.714  (m)          320.58   (f) ADJUSTED    2 0
 JV0793
 JV0793.Superseded values are not recommended for survey control.
 JV0793
 JV0793.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0793.See file dsdata.pdf to determine how the superseded data were derived.
 JV0793
 JV0793_MARKER: Q = CHISELED SQUARE
 JV0793_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0793_SP_SET: BRIDGE FOUNDATION
 JV0793_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0793
 JV0793  HISTORY     - Date     Condition        Report By
 JV0793  HISTORY     - UNK      MONUMENTED       MD0050
 JV0793  HISTORY     - 1935     GOOD             CGS
 JV0793
 JV0793                          STATION DESCRIPTION
 JV0793
 JV0793'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV0793'AT BALTIMORE.
 JV0793'(CITY OF BALTIMORE) IN NORTH END OF WEST FOUNDATION OF BRIDGE
 JV0793'OVER WESTERN MARYLAND RAILROAD, LIBERTY HEIGHTS AVENUE.  IN THE
 JV0793'FIRCT FOUNDATION WEST OF SOUTH TRACK, 2.1 FEET SOUTH OF NORTH
 JV0793'END.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8521 ***********************************************************************
 AI8521  DESIGNATION -  42IB
 AI8521  PID         -  AI8521
 AI8521  STATE/COUNTY-  MD/HOWARD
 AI8521  COUNTRY     -  US
 AI8521  USGS QUAD   -  SAVAGE (2016)
 AI8521
 AI8521                         *CURRENT SURVEY CONTROL
 AI8521  ______________________________________________________________________
 AI8521* NAD 83(2011) POSITION- 39 09 20.77303(N) 076 49 15.81070(W)   ADJUSTED
 AI8521* NAD 83(2011) ELLIP HT-    53.789 (meters)        (06/27/12)   ADJUSTED
 AI8521* NAD 83(2011) EPOCH   -  2010.00
 AI8521* NAVD 88 ORTHO HEIGHT -    86.1   (meters)      282.    (feet) GPS OBS
 AI8521  ______________________________________________________________________
 AI8521  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8521  GEOID HEIGHT    -        -32.261 (meters)                     GEOID99
 AI8521  GEOID HEIGHT    -        -32.280 (meters)                     GEOID18
 AI8521  NAD 83(2011) X  -  1,129,128.129 (meters)                     COMP
 AI8521  NAD 83(2011) Y  - -4,822,033.556 (meters)                     COMP
 AI8521  NAD 83(2011) Z  -  4,005,775.474 (meters)                     COMP
 AI8521  LAPLACE CORR    -         -4.84  (seconds)                    DEFLEC18
 AI8521
 AI8521  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8521  Standards:
 AI8521         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8521            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8521  -------------------------------------------------------------------
 AI8521  NETWORK    0.98   1.18           0.43   0.37   0.60     -0.11625449
 AI8521  -------------------------------------------------------------------
 AI8521  Click here for local accuracies and other accuracy information.
 AI8521
 AI8521.The horizontal coordinates were established by GPS observations
 AI8521.and adjusted by the National Geodetic Survey in June 2012.
 AI8521
 AI8521.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8521.been affixed to the stable North American tectonic plate. See 
 AI8521.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8521
 AI8521.The horizontal coordinates are valid at the epoch date displayed above
 AI8521.which is a decimal equivalence of Year/Month/Day.
 AI8521
 AI8521.The orthometric height was determined by GPS observations and a
 AI8521.high-resolution geoid model.
 AI8521
 AI8521.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8521.GEOID18 height accuracy estimate available here.
 AI8521
 AI8521.Click photographs - Photos may exist for this station.
 AI8521
 AI8521.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8521
 AI8521.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8521
 AI8521.The ellipsoidal height was determined by GPS observations
 AI8521.and is referenced to NAD 83.
 AI8521
 AI8521. The following values were computed from the NAD 83(2011) position.
 AI8521
 AI8521;                    North         East     Units Scale Factor Converg.
 AI8521;SPC MD       -   165,313.757   415,466.409   MT  0.99996175   +0 06 44.3
 AI8521;SPC MD       -   542,366.88  1,363,076.04   sFT  0.99996175   +0 06 44.3
 AI8521;UTM  18      - 4,335,642.017   342,652.260   MT  0.99990486   -1 09 00.4
 AI8521
 AI8521!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8521!SPC MD       -   0.99999156  x   0.99996175  =   0.99995331
 AI8521!UTM  18      -   0.99999156  x   0.99990486  =   0.99989642
 AI8521
 AI8521_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4265235642(NAD 83)
 AI8521
 AI8521                          SUPERSEDED SURVEY CONTROL
 AI8521
 AI8521  NAD 83(2007)-  39 09 20.77333(N)    076 49 15.81187(W) AD(2002.00) 0
 AI8521  ELLIP H (02/10/07)   53.814  (m)                       GP(2002.00)    
 AI8521  ELLIP H (08/30/02)   53.807  (m)                       GP(       ) 4 2
 AI8521  NAD 83(1991)-  39 09 20.77335(N)    076 49 15.81158(W) AD(       ) 1
 AI8521  ELLIP H (11/16/00)   53.748  (m)                       GP(       ) 4 1
 AI8521
 AI8521.Superseded values are not recommended for survey control.
 AI8521
 AI8521.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8521.See file dsdata.pdf to determine how the superseded data were derived.
 AI8521
 AI8521_MARKER: DD = SURVEY DISK
 AI8521_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8521_STAMPING: 42IB
 AI8521_MARK LOGO: MD-027
 AI8521_PROJECTION: FLUSH
 AI8521_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8521_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8521+STABILITY: SURFACE MOTION
 AI8521_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8521+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2017
 AI8521
 AI8521  HISTORY     - Date     Condition        Report By
 AI8521  HISTORY     - 1997     MONUMENTED       MD-027
 AI8521  HISTORY     - 20000915 GOOD             MD-027
 AI8521  HISTORY     - 20030612 GOOD             GEOCAC
 AI8521  HISTORY     - 20091104 GOOD             MDSHA
 AI8521  HISTORY     - 20170915 GOOD             GPI
 AI8521
 AI8521                          STATION DESCRIPTION
 AI8521
 AI8521'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8521'DESCRIPTION BY HOWARD COUNTY 2000.  THE STATION IS LOCATED IN
 AI8521'SAVAGE ON TOP OF THE ENBANKMENT OF A POND AT GUILFORD PARK  BY
 AI8521'THE INTERSECTION OF  GUILFORD ROAD AND MISSION ROAD.  TO REACH
 AI8521'THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 32 AND  ROUTE
 AI8521'US 1 GO 04 MILES NE ALONG ROUTE US 1  TO CORNER WITH GUILFORD
 AI8521'ROAD  TURN LEFT (NW) AND FOLLOW GUILFORD ROAD FOR ONE MILE TO THE
 AI8521'ENTRANCE OF GUILFORD PARK ON THE LEFT. ENTER THE PARK AND FROM
 AI8521'THE PARKING LOT WALK ABOUT 100 FEET ALONG A PAVED WALK  ATOP THE
 AI8521'EMBANKMENT OF A SMALL POND, THE STATION IS  2 FEET NORTH OF THE
 AI8521'NORTH EDGE OF THE WALK , MORE OR LESS ON LINE WITH THE CENTERLINE
 AI8521'EXTENDED OF MISSION ROAD. THE STATION IS 19.4 FEET TO POLE BG  AND
 AI8521'E    271362 AND 42.2 FEET TO THE SOUTHWEST CORNER OF AN INLET AT THE
 AI8521'BOTTOM OF THE EMBANKMENT SLOPE ON GUILFORD ROAD. THE STATION IS
 AI8521'A  STANDARD HOWARD COUNTY SURVEY DISC SET ON CONCRETE BASE,
 AI8521'FLUSH WITH THE GROUND.
 AI8521'
 AI8521
 AI8521                          STATION RECOVERY (2003)
 AI8521
 AI8521'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 AI8521'DISK IS STAMPED 3/97 421B (CORRECTING STAMPING LINE ABOVE TO ADD
 AI8521'DATE).
 AI8521
 AI8521                          STATION RECOVERY (2009)
 AI8521
 AI8521'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 AI8521'RECOVERED IN GOOD CONDITION.
 AI8521
 AI8521                          STATION RECOVERY (2017)
 AI8521
 AI8521'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2017 (LJB)
 AI8521'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0806 ***********************************************************************
 HU0806  DESIGNATION -  43
 HU0806  PID         -  HU0806
 HU0806  STATE/COUNTY-  MD/CAROLINE
 HU0806  COUNTRY     -  US
 HU0806  USGS QUAD   -  DENTON (2017)
 HU0806
 HU0806                         *CURRENT SURVEY CONTROL
 HU0806  ______________________________________________________________________
 HU0806* NAD 83(1986) POSITION- 38 53 12.     (N) 075 49 59.     (W)   SCALED
 HU0806* NAVD 88 ORTHO HEIGHT -    12.674 (meters)       41.58  (feet) ADJUSTED
 HU0806  ______________________________________________________________________
 HU0806  GEOID HEIGHT    -        -34.838 (meters)                     GEOID18
 HU0806  DYNAMIC HEIGHT  -         12.666 (meters)       41.56  (feet) COMP
 HU0806  MODELED GRAVITY -    980,041.4   (mgal)                       NAVD 88
 HU0806
 HU0806  VERT ORDER      -  SECOND    CLASS 0
 HU0806
 HU0806.The horizontal coordinates were scaled from a map and have
 HU0806.an estimated accuracy of +/- 6 seconds.
 HU0806
 HU0806.The orthometric height was determined by differential leveling and
 HU0806.adjusted by the NATIONAL GEODETIC SURVEY
 HU0806.in June 1991.
 HU0806
 HU0806.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0806.GEOID18 height accuracy estimate available here.
 HU0806
 HU0806.Click photographs - Photos may exist for this station.
 HU0806
 HU0806.The dynamic height is computed by dividing the NAVD 88
 HU0806.geopotential number by the normal gravity value computed on the
 HU0806.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0806.degrees latitude (g = 980.6199 gals.).
 HU0806
 HU0806.The modeled gravity was interpolated from observed gravity values.
 HU0806
 HU0806;                    North         East    Units  Estimated Accuracy
 HU0806;SPC MD       -   136,070.      501,240.      MT  (+/- 180 meters Scaled)
 HU0806
 HU0806_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ277045(NAD 83)
 HU0806
 HU0806                          SUPERSEDED SURVEY CONTROL
 HU0806
 HU0806  NGVD 29 (11/26/84)   12.913  (m)           42.37   (f) ADJUSTED    2 0
 HU0806
 HU0806.Superseded values are not recommended for survey control.
 HU0806
 HU0806.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0806.See file dsdata.pdf to determine how the superseded data were derived.
 HU0806
 HU0806_MARKER: DD = SURVEY DISK
 HU0806_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0806_SP_SET: BUILDING
 HU0806_STAMPING: 43 ADJ 1903
 HU0806_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0806
 HU0806  HISTORY     - Date     Condition        Report By
 HU0806  HISTORY     - 1903     MONUMENTED       USGS
 HU0806  HISTORY     - 1943     GOOD             CGS
 HU0806  HISTORY     - 19901029 MARK NOT FOUND   NGS
 HU0806
 HU0806                          STATION DESCRIPTION
 HU0806
 HU0806'DESCRIBED BY COAST AND GEODETIC SURVEY 1943
 HU0806'IN DENTON.
 HU0806'AT DENTON, CAROLINE COUNTY, AT THE COUNTY COURTHOUSE, IN THE
 HU0806'SOUTH FACE OF THE BUILDING, 18 FEET EAST OF THE ENTRANCE, 3 FEET
 HU0806'WEST OF THE SOUTHEAST CORNER, AND 3 FEET ABOVE THE SIDEWALK.  A
 HU0806'UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 43 ADJ
 HU0806'1903 AND SET VERTICALLY.
 HU0806
 HU0806                          STATION RECOVERY (1990)
 HU0806
 HU0806'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0806'THERE HAS BEEN AN ADDITION TO THE BUILDING AND THE MARK WAS COVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1218 ***********************************************************************
 JV1218  DESIGNATION -  4385 C OF B
 JV1218  PID         -  JV1218
 JV1218  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1218  COUNTRY     -  US
 JV1218  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1218
 JV1218                         *CURRENT SURVEY CONTROL
 JV1218  ______________________________________________________________________
 JV1218* NAD 83(1986) POSITION- 39 19 04.     (N) 076 37 06.     (W)   SCALED
 JV1218* NAVD 88 ORTHO HEIGHT -    47.588 (meters)      156.13  (feet) ADJUSTED
 JV1218  ______________________________________________________________________
 JV1218  GEOID HEIGHT    -        -32.658 (meters)                     GEOID18
 JV1218  DYNAMIC HEIGHT  -         47.563 (meters)      156.05  (feet) COMP
 JV1218  MODELED GRAVITY -    980,103.3   (mgal)                       NAVD 88
 JV1218
 JV1218  VERT ORDER      -  SECOND    CLASS 0
 JV1218
 JV1218.The horizontal coordinates were scaled from a map and have
 JV1218.an estimated accuracy of +/- 6 seconds.
 JV1218
 JV1218.The orthometric height was determined by differential leveling and
 JV1218.adjusted by the NATIONAL GEODETIC SURVEY
 JV1218.in June 1991.
 JV1218
 JV1218.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1218.GEOID18 height accuracy estimate available here.
 JV1218
 JV1218.Click photographs - Photos may exist for this station.
 JV1218
 JV1218.The dynamic height is computed by dividing the NAVD 88
 JV1218.geopotential number by the normal gravity value computed on the
 JV1218.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1218.degrees latitude (g = 980.6199 gals.).
 JV1218
 JV1218.The modeled gravity was interpolated from observed gravity values.
 JV1218
 JV1218;                    North         East    Units  Estimated Accuracy
 JV1218;SPC MD       -   183,350.      432,910.      MT  (+/- 180 meters Scaled)
 JV1218
 JV1218_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ604532(NAD 83)
 JV1218
 JV1218                          SUPERSEDED SURVEY CONTROL
 JV1218
 JV1218  NGVD 29 (11/26/84)   47.821  (m)          156.89   (f) ADJUSTED    2 0
 JV1218
 JV1218.Superseded values are not recommended for survey control.
 JV1218
 JV1218.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1218.See file dsdata.pdf to determine how the superseded data were derived.
 JV1218
 JV1218_MARKER: Q = CHISELED SQUARE
 JV1218_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1218_SP_SET: STEP
 JV1218_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1218
 JV1218  HISTORY     - Date     Condition        Report By
 JV1218  HISTORY     - UNK      MONUMENTED       MD0050
 JV1218  HISTORY     - 1935     GOOD             CGS
 JV1218  HISTORY     - 20080529 MARK NOT FOUND   GEOCAC
 JV1218
 JV1218                          STATION DESCRIPTION
 JV1218
 JV1218'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1218'AT BALTIMORE.
 JV1218'AT BALTIMORE, AT THE SOUTHWEST CORNER OF THE INTERSECTION OF
 JV1218'MARYLAND AVENUE AND TWENTY-FIFTH STREET, AT THE MARYLAND AVENUE
 JV1218'PRESBYTERIAN CHURCH, AND ON THE TOP OF THE NORTHEAST CORNER OF
 JV1218'THE SECOND STEP AT THE NORTH SIDE OF THE ENTRANCE.  A CHISELED
 JV1218'SQUARE.
 JV1218
 JV1218                          STATION RECOVERY (2008)
 JV1218
 JV1218'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 JV1218'THE CHURCH HAS BEEN RAZED AND REPLACED WITH NEWER BRICK BUILDINGS.  A
 JV1218'FEW OF THE OLD CHURCH'S PORCHES SURVIVE, BUT THERE ARE NO CHISELED
 JV1218'SQUARES VISIBLE ON ANY OF THE STEPS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1214 ***********************************************************************
 JV1214  DESIGNATION -  4396 C OF B
 JV1214  PID         -  JV1214
 JV1214  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1214  COUNTRY     -  US
 JV1214  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1214
 JV1214                         *CURRENT SURVEY CONTROL
 JV1214  ______________________________________________________________________
 JV1214* NAD 83(1986) POSITION- 39 19 38.     (N) 076 37 34.     (W)   SCALED
 JV1214* NAVD 88 ORTHO HEIGHT -    53.215 (meters)      174.59  (feet) ADJUSTED
 JV1214  ______________________________________________________________________
 JV1214  GEOID HEIGHT    -        -32.618 (meters)                     GEOID18
 JV1214  DYNAMIC HEIGHT  -         53.187 (meters)      174.50  (feet) COMP
 JV1214  MODELED GRAVITY -    980,102.7   (mgal)                       NAVD 88
 JV1214
 JV1214  VERT ORDER      -  SECOND    CLASS 0
 JV1214
 JV1214.The horizontal coordinates were scaled from a map and have
 JV1214.an estimated accuracy of +/- 6 seconds.
 JV1214
 JV1214.The orthometric height was determined by differential leveling and
 JV1214.adjusted by the NATIONAL GEODETIC SURVEY
 JV1214.in June 1991.
 JV1214
 JV1214.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1214.GEOID18 height accuracy estimate available here.
 JV1214
 JV1214.Click photographs - Photos may exist for this station.
 JV1214
 JV1214.The dynamic height is computed by dividing the NAVD 88
 JV1214.geopotential number by the normal gravity value computed on the
 JV1214.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1214.degrees latitude (g = 980.6199 gals.).
 JV1214
 JV1214.The modeled gravity was interpolated from observed gravity values.
 JV1214
 JV1214;                    North         East    Units  Estimated Accuracy
 JV1214;SPC MD       -   184,400.      432,240.      MT  (+/- 180 meters Scaled)
 JV1214
 JV1214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ598543(NAD 83)
 JV1214
 JV1214                          SUPERSEDED SURVEY CONTROL
 JV1214
 JV1214  NGVD 29 (11/26/84)   53.447  (m)          175.35   (f) ADJUSTED    2 0
 JV1214
 JV1214.Superseded values are not recommended for survey control.
 JV1214
 JV1214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1214.See file dsdata.pdf to determine how the superseded data were derived.
 JV1214
 JV1214_MARKER: Q = CHISELED SQUARE
 JV1214_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1214_SP_SET: UNDERPASS
 JV1214_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1214
 JV1214  HISTORY     - Date     Condition        Report By
 JV1214  HISTORY     - UNK      MONUMENTED       MD0050
 JV1214  HISTORY     - 1935     GOOD             CGS
 JV1214
 JV1214                          STATION DESCRIPTION
 JV1214
 JV1214'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1214'AT BALTIMORE.
 JV1214'AT BALTIMORE, 300 FEET NORTH OF WYMAN DRIVE, ON THE WEST SIDE OF
 JV1214'REMINGTON AVENUE, AND IN THE TOP OF THE SOUTHEAST CORNER OF A
 JV1214'MARYLAND AND PENNSYLVANIA RAILROAD UNDERPASS.  A BRASS SCREW, IN
 JV1214'A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7820 ***********************************************************************
 DR7820  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7820  DESIGNATION -  44
 DR7820  PID         -  DR7820
 DR7820  STATE/COUNTY-  MD/QUEEN ANNES
 DR7820  COUNTRY     -  US
 DR7820  USGS QUAD   -  CHESTERTOWN (2017)
 DR7820
 DR7820                         *CURRENT SURVEY CONTROL
 DR7820  ______________________________________________________________________
 DR7820* NAD 83(2011) POSITION- 39 07 32.04864(N) 076 03 57.80831(W)   ADJUSTED
 DR7820* NAD 83(2011) ELLIP HT-   -22.439 (meters)        (02/02/22)   ADJUSTED
 DR7820* NAD 83(2011) EPOCH   -  2010.00
 DR7820* NAVD 88 ORTHO HEIGHT -    11.14  (meters)       36.5   (feet) GPS OBS
 DR7820  ______________________________________________________________________
 DR7820  GEOID HEIGHT    -        -33.578 (meters)                     GEOID18
 DR7820  NAD 83(2011) X  -  1,193,064.797 (meters)                     COMP
 DR7820  NAD 83(2011) Y  - -4,808,733.317 (meters)                     COMP
 DR7820  NAD 83(2011) Z  -  4,003,126.859 (meters)                     COMP
 DR7820  LAPLACE CORR    -         -2.62  (seconds)                    DEFLEC18
 DR7820
 DR7820  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7820  Standards:
 DR7820         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7820            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7820  -------------------------------------------------------------------
 DR7820  NETWORK    0.72   1.65           0.32   0.26   0.84     -0.14159046
 DR7820  -------------------------------------------------------------------
 DR7820  Click here for local accuracies and other accuracy information.
 DR7820
 DR7820.The horizontal coordinates were established by GPS observations
 DR7820.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7820
 DR7820.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7820.been affixed to the stable North American tectonic plate. See 
 DR7820.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7820
 DR7820.The horizontal coordinates are valid at the epoch date displayed above
 DR7820.which is a decimal equivalence of Year/Month/Day.
 DR7820
 DR7820.The orthometric height was determined by GPS observations and a
 DR7820.high-resolution geoid model using precise GPS observation and
 DR7820.processing techniques.
 DR7820
 DR7820.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7820.GEOID18 height accuracy estimate available here.
 DR7820
 DR7820.Click photographs - Photos may exist for this station.
 DR7820
 DR7820.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7820
 DR7820.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7820
 DR7820.The ellipsoidal height was determined by GPS observations
 DR7820.and is referenced to NAD 83.
 DR7820
 DR7820. The following values were computed from the NAD 83(2011) position.
 DR7820
 DR7820;                    North         East     Units Scale Factor Converg.
 DR7820;SPC MD       -   162,358.945   480,756.160   MT  0.99995932   +0 35 10.2
 DR7820;SPC MD       -   532,672.64  1,577,280.83   sFT  0.99995932   +0 35 10.2
 DR7820;UTM  18      - 4,331,252.263   407,850.471   MT  0.99970456   -0 40 21.9
 DR7820
 DR7820!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7820!SPC MD       -   1.00000352  x   0.99995932  =   0.99996284
 DR7820!UTM  18      -   1.00000352  x   0.99970456  =   0.99970808
 DR7820
 DR7820_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0785031252(NAD 83)
 DR7820
 DR7820                          SUPERSEDED SURVEY CONTROL
 DR7820
 DR7820.No superseded survey control is available for this station.
 DR7820
 DR7820_MARKER: DD = SURVEY DISK
 DR7820_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7820_STAMPING: 44
 DR7820_MARK LOGO: MD-035
 DR7820_PROJECTION: RECESSED 9 CENTIMETERS
 DR7820_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7820+STABILITY: SURFACE MOTION
 DR7820_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7820+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7820
 DR7820  HISTORY     - Date     Condition        Report By
 DR7820  HISTORY     - UNK      MONUMENTED       MD-035
 DR7820  HISTORY     - 20210309 GOOD             MDSHA
 DR7820
 DR7820                          STATION DESCRIPTION
 DR7820
 DR7820'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7820'THE MARK IS LOCATED ABOUT 4.4 MI (7.1 KM) WEST-SOUTHWEST OF CHURCH
 DR7820'HILL, 2.8 MI (4.5 KM) WEST OF STARKEY CORNER AND 2.0 MI (3.2 KM) NORTH
 DR7820'OF BURRISVILLE.
 DR7820'
 DR7820'TO REACH FROM THE JUNCTION OF MD 300 AND MD 213, GO SOUTH-SOUTHWEST ON
 DR7820'MD 213 FOR 1.76 MI (2.83 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DR7820'WEST ON ISLAND CREEK ROAD FOR 3.15 MI (5.07 KM) TO AN INTERSECTION.
 DR7820'TURN LEFT AND GO SOUTH-SOUTHWEST ON LANDS END ROAD FOR 0.74 MI (1.19
 DR7820'KM) TO THE INTERSECTION OF BOOKERS WHARF ROAD AND THE THE MARK ON THE
 DR7820'RIGHT IN THE WEST ANGLE OF THE INTERSECTION.
 DR7820'
 DR7820'THE MARK IS 96.2 FT (29.3 M) WEST OF DPL UTILITY POLE NUMBERED
 DR7820'33809-20941, 90.9 FT (27.7 M) NORTH OF A DPL UTILITY POLE NUMBERED
 DR7820'33799-20929, 53.3 FT (16.2 M) SOUTHWEST OF THE CENTERLINE OF BOOKERS
 DR7820'WARF ROAD, 47.4 FT (14.4 M) SOUTH OF A UTILITY POLE NUMBERED 25T AND
 DR7820'333796-20944 DPL, 26.2 FT (8.0 M) NORTHWEST OF THE CENTERLINE OF LANDS
 DR7820'END ROAD AND SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE
 DR7820'MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1204 ***********************************************************************
 JV1204  DESIGNATION -  4407 C OF B
 JV1204  PID         -  JV1204
 JV1204  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1204  COUNTRY     -  US
 JV1204  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1204
 JV1204                         *CURRENT SURVEY CONTROL
 JV1204  ______________________________________________________________________
 JV1204* NAD 83(1986) POSITION- 39 20 13.     (N) 076 38 50.     (W)   SCALED
 JV1204* NAVD 88 ORTHO HEIGHT -    50.730 (meters)      166.44  (feet) ADJUSTED
 JV1204  ______________________________________________________________________
 JV1204  GEOID HEIGHT    -        -32.537 (meters)                     GEOID18
 JV1204  DYNAMIC HEIGHT  -         50.704 (meters)      166.35  (feet) COMP
 JV1204  MODELED GRAVITY -    980,103.6   (mgal)                       NAVD 88
 JV1204
 JV1204  VERT ORDER      -  SECOND    CLASS 0
 JV1204
 JV1204.The horizontal coordinates were scaled from a map and have
 JV1204.an estimated accuracy of +/- 6 seconds.
 JV1204
 JV1204.The orthometric height was determined by differential leveling and
 JV1204.adjusted by the NATIONAL GEODETIC SURVEY
 JV1204.in June 1991.
 JV1204
 JV1204.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1204.GEOID18 height accuracy estimate available here.
 JV1204
 JV1204.Click photographs - Photos may exist for this station.
 JV1204
 JV1204.The dynamic height is computed by dividing the NAVD 88
 JV1204.geopotential number by the normal gravity value computed on the
 JV1204.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1204.degrees latitude (g = 980.6199 gals.).
 JV1204
 JV1204.The modeled gravity was interpolated from observed gravity values.
 JV1204
 JV1204;                    North         East    Units  Estimated Accuracy
 JV1204;SPC MD       -   185,470.      430,410.      MT  (+/- 180 meters Scaled)
 JV1204
 JV1204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ580554(NAD 83)
 JV1204
 JV1204                          SUPERSEDED SURVEY CONTROL
 JV1204
 JV1204  NGVD 29 (11/26/84)   50.961  (m)          167.19   (f) ADJUSTED    2 0
 JV1204
 JV1204.Superseded values are not recommended for survey control.
 JV1204
 JV1204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1204.See file dsdata.pdf to determine how the superseded data were derived.
 JV1204
 JV1204_MARKER: Q = CHISELED SQUARE
 JV1204_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1204_SP_SET: STEP
 JV1204_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1204
 JV1204  HISTORY     - Date     Condition        Report By
 JV1204  HISTORY     - UNK      MONUMENTED       MD0050
 JV1204  HISTORY     - 1935     GOOD             CGS
 JV1204
 JV1204                          STATION DESCRIPTION
 JV1204
 JV1204'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1204'AT BALTIMORE.
 JV1204'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, 0.3 MILE NORTH OF
 JV1204'THE FORTY-FIRCT STREET BRIDGE, AT A BRIDGE OVER MILL RACE, AT
 JV1204'THE SOUTHWEST CORNER, AND IN THE CENTER OF THE TOP OF THE FIFTH
 JV1204'STEP FROM THE BOTTOM.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1203 ***********************************************************************
 JV1203  DESIGNATION -  4408 C OF B
 JV1203  PID         -  JV1203
 JV1203  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1203  COUNTRY     -  US
 JV1203  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1203
 JV1203                         *CURRENT SURVEY CONTROL
 JV1203  ______________________________________________________________________
 JV1203* NAD 83(1986) POSITION- 39 20 22.     (N) 076 38 54.     (W)   SCALED
 JV1203* NAVD 88 ORTHO HEIGHT -    53.018 (meters)      173.94  (feet) ADJUSTED
 JV1203  ______________________________________________________________________
 JV1203  GEOID HEIGHT    -        -32.529 (meters)                     GEOID18
 JV1203  DYNAMIC HEIGHT  -         52.990 (meters)      173.85  (feet) COMP
 JV1203  MODELED GRAVITY -    980,103.4   (mgal)                       NAVD 88
 JV1203
 JV1203  VERT ORDER      -  SECOND    CLASS 0
 JV1203
 JV1203.The horizontal coordinates were scaled from a map and have
 JV1203.an estimated accuracy of +/- 6 seconds.
 JV1203
 JV1203.The orthometric height was determined by differential leveling and
 JV1203.adjusted by the NATIONAL GEODETIC SURVEY
 JV1203.in June 1991.
 JV1203
 JV1203.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1203.GEOID18 height accuracy estimate available here.
 JV1203
 JV1203.Click photographs - Photos may exist for this station.
 JV1203
 JV1203.The dynamic height is computed by dividing the NAVD 88
 JV1203.geopotential number by the normal gravity value computed on the
 JV1203.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1203.degrees latitude (g = 980.6199 gals.).
 JV1203
 JV1203.The modeled gravity was interpolated from observed gravity values.
 JV1203
 JV1203;                    North         East    Units  Estimated Accuracy
 JV1203;SPC MD       -   185,750.      430,320.      MT  (+/- 180 meters Scaled)
 JV1203
 JV1203_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ579557(NAD 83)
 JV1203
 JV1203                          SUPERSEDED SURVEY CONTROL
 JV1203
 JV1203  NGVD 29 (11/26/84)   53.249  (m)          174.70   (f) ADJUSTED    2 0
 JV1203
 JV1203.Superseded values are not recommended for survey control.
 JV1203
 JV1203.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1203.See file dsdata.pdf to determine how the superseded data were derived.
 JV1203
 JV1203_MARKER: Q = CHISELED SQUARE
 JV1203_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1203_SP_SET: MARKER
 JV1203_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1203
 JV1203  HISTORY     - Date     Condition        Report By
 JV1203  HISTORY     - UNK      MONUMENTED       MD0050
 JV1203  HISTORY     - 1954     MARK NOT FOUND   CGS
 JV1203
 JV1203                          STATION DESCRIPTION
 JV1203
 JV1203'DESCRIBED BY COAST AND GEODETIC SURVEY 1954
 JV1203'AT BALTIMORE.
 JV1203'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, 0.3 MILE SOUTH OF
 JV1203'COLD SPRING AVENUE, EAST OF THE TRACK AND JONES FALLS CREEK, AND
 JV1203'AT AN OLD CITY NORTH-BOUNDARY MARKER.  THE TOP OF AN OLD STONE
 JV1203'CITY-LIMIT MARKER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1837 ***********************************************************************
 JV1837  DESIGNATION -  441
 JV1837  PID         -  JV1837
 JV1837  STATE/COUNTY-  MD/FREDERICK
 JV1837  COUNTRY     -  US
 JV1837  USGS QUAD   -  WOODSBORO (2016)
 JV1837
 JV1837                         *CURRENT SURVEY CONTROL
 JV1837  ______________________________________________________________________
 JV1837* NAD 83(1986) POSITION- 39 36 29.     (N) 077 17 33.     (W)   SCALED
 JV1837* NAVD 88 ORTHO HEIGHT -    99.939 (meters)      327.88  (feet) ADJUSTED
 JV1837  ______________________________________________________________________
 JV1837  GEOID HEIGHT    -        -33.022 (meters)                     GEOID18
 JV1837  DYNAMIC HEIGHT  -         99.885 (meters)      327.71  (feet) COMP
 JV1837  MODELED GRAVITY -    980,087.0   (mgal)                       NAVD 88
 JV1837
 JV1837  VERT ORDER      -  SECOND    CLASS 0
 JV1837
 JV1837.The horizontal coordinates were scaled from a map and have
 JV1837.an estimated accuracy of +/- 6 seconds.
 JV1837
 JV1837.The orthometric height was determined by differential leveling and
 JV1837.adjusted by the NATIONAL GEODETIC SURVEY
 JV1837.in June 1991.
 JV1837
 JV1837.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1837.GEOID18 height accuracy estimate available here.
 JV1837
 JV1837.Click photographs - Photos may exist for this station.
 JV1837
 JV1837.The dynamic height is computed by dividing the NAVD 88
 JV1837.geopotential number by the normal gravity value computed on the
 JV1837.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1837.degrees latitude (g = 980.6199 gals.).
 JV1837
 JV1837.The modeled gravity was interpolated from observed gravity values.
 JV1837
 JV1837;                    North         East    Units  Estimated Accuracy
 JV1837;SPC MD       -   215,550.      374,880.      MT  (+/- 180 meters Scaled)
 JV1837
 JV1837_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ031867(NAD 83)
 JV1837
 JV1837                          SUPERSEDED SURVEY CONTROL
 JV1837
 JV1837  NGVD 29 (11/26/84)  100.152  (m)          328.58   (f) ADJUSTED    2 0
 JV1837
 JV1837.Superseded values are not recommended for survey control.
 JV1837
 JV1837.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1837.See file dsdata.pdf to determine how the superseded data were derived.
 JV1837
 JV1837_MARKER: DD = SURVEY DISK
 JV1837_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1837_SP_SET: BRIDGE
 JV1837_STAMPING: 441
 JV1837_MARK LOGO: USACE
 JV1837_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1837
 JV1837  HISTORY     - Date     Condition        Report By
 JV1837  HISTORY     - UNK      MONUMENTED       USACE
 JV1837  HISTORY     - 1935     GOOD             CGS
 JV1837  HISTORY     - 20021110 GOOD             GEOCAC
 JV1837
 JV1837                          STATION DESCRIPTION
 JV1837
 JV1837'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1837'ABOUT 1.7 MILES EAST ALONG THE WESTERN MARYLAND RAILWAY FROM
 JV1837'THE STATION AT EMMITSBURG JUNCTION, FREDERICK COUNTY, AT A
 JV1837'BRIDGE OVER THE MONOCACY RIVER, IN THE TOP OF THE NORTHWEST
 JV1837'CORNER OF THE FIRST STONE PIER EAST OF THE WEST END, 12 FEET
 JV1837'NORTH OF THE CENTER LINE OF THE TRACK, AND ABOUT 4 FEET LOWER
 JV1837'THAN THE TRACK.  A CORPS OF ENGINEERS, U.S. ARMY, STANDARD DISK,
 JV1837'STAMPED 441.
 JV1837
 JV1837                          STATION RECOVERY (2002)
 JV1837
 JV1837'RECOVERY NOTE BY GEOCACHING 2002 (MHB)
 JV1837'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1832 ***********************************************************************
 JV1832  DESIGNATION -  442 USGS
 JV1832  PID         -  JV1832
 JV1832  STATE/COUNTY-  MD/FREDERICK
 JV1832  COUNTRY     -  US
 JV1832  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV1832
 JV1832                         *CURRENT SURVEY CONTROL
 JV1832  ______________________________________________________________________
 JV1832* NAD 83(1986) POSITION- 39 36 58.44   (N) 077 22 39.12   (W)   HD_HELD1
 JV1832* NAVD 88 ORTHO HEIGHT -   134.399 (meters)      440.94  (feet) ADJUSTED
 JV1832  ______________________________________________________________________
 JV1832  GEOID HEIGHT    -        -33.124 (meters)                     GEOID18
 JV1832  DYNAMIC HEIGHT  -        134.328 (meters)      440.71  (feet) COMP
 JV1832  MODELED GRAVITY -    980,093.7   (mgal)                       NAVD 88
 JV1832
 JV1832  VERT ORDER      -  SECOND    CLASS 0
 JV1832
 JV1832.The horizontal coordinates were determined by differentially corrected
 JV1832.hand held GPS observations or other comparable positioning techniques
 JV1832.and have an estimated accuracy of +/- 3 meters.
 JV1832
 JV1832.The orthometric height was determined by differential leveling and
 JV1832.adjusted by the NATIONAL GEODETIC SURVEY
 JV1832.in June 1991.
 JV1832
 JV1832.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1832.GEOID18 height accuracy estimate available here.
 JV1832
 JV1832.Click photographs - Photos may exist for this station.
 JV1832
 JV1832.The dynamic height is computed by dividing the NAVD 88
 JV1832.geopotential number by the normal gravity value computed on the
 JV1832.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1832.degrees latitude (g = 980.6199 gals.).
 JV1832
 JV1832.The modeled gravity was interpolated from observed gravity values.
 JV1832
 JV1832;                    North         East    Units  Estimated Accuracy
 JV1832;SPC MD       -   216,487.2     367,580.2     MT  (+/- 3 meters HH1 GPS) 
 JV1832
 JV1832_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9591187865(NAD 83)
 JV1832
 JV1832                          SUPERSEDED SURVEY CONTROL
 JV1832
 JV1832  NGVD 29 (11/26/84)  134.606  (m)          441.62   (f) ADJUSTED    2 0
 JV1832
 JV1832.Superseded values are not recommended for survey control.
 JV1832
 JV1832.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1832.See file dsdata.pdf to determine how the superseded data were derived.
 JV1832
 JV1832_MARKER: DB = BENCH MARK DISK
 JV1832_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1832_SP_SET: OVERPASS
 JV1832_STAMPING: 442
 JV1832_MARK LOGO: USGS
 JV1832_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1832_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1832+SATELLITE: SATELLITE OBSERVATIONS - November 12, 2008
 JV1832
 JV1832  HISTORY     - Date     Condition        Report By
 JV1832  HISTORY     - UNK      MONUMENTED       USGS
 JV1832  HISTORY     - 1935     GOOD             CGS
 JV1832  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JV1832  HISTORY     - 20081112 GOOD             GEOCAC
 JV1832
 JV1832                          STATION DESCRIPTION
 JV1832
 JV1832'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1832'AT GRACEHAM.
 JV1832'AT GRACEHAM, FREDERICK COUNTY, ABOUT 233 YARDS EAST OF THE
 JV1832'WESTERN MARYLAND RAILWAY STATION, AND IN THE TOP OF THE WEST
 JV1832'ABUTMENT OF THE STATE HIGHWAY 81 OVERPASS.  A UNITED STATES
 JV1832'GEOLOGICAL SURVEY STANDARD DISK, STAMPED 442.
 JV1832
 JV1832                          STATION RECOVERY (1990)
 JV1832
 JV1832'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1832'MARK NOT FOUND.
 JV1832
 JV1832                          STATION RECOVERY (2008)
 JV1832
 JV1832'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV1832'FOUND ON THE TOP OF THE NORTH EAST ABUTMENT OF MARYLAND RTE. 77
 JV1832'OVERPASS (HIGHWAY 81).  N 39  39.974    W 77  22.652   IN GOOD SHAPE
 JV1832'EXCEPT THAT THE 2 OF 442 IS ALMOST ILLEGIBLE.  VISIBLE UNDER THE NEW
 JV1832'CATWALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1847 ***********************************************************************
 JV1847  DESIGNATION -  445
 JV1847  PID         -  JV1847
 JV1847  STATE/COUNTY-  MD/CARROLL
 JV1847  COUNTRY     -  US
 JV1847  USGS QUAD   -  NEW WINDSOR (2016)
 JV1847
 JV1847                         *CURRENT SURVEY CONTROL
 JV1847  ______________________________________________________________________
 JV1847* NAD 83(1986) POSITION- 39 32 28.     (N) 077 06 36.     (W)   SCALED
 JV1847* NAVD 88 ORTHO HEIGHT -   135.727 (meters)      445.30  (feet) ADJUSTED
 JV1847  ______________________________________________________________________
 JV1847  GEOID HEIGHT    -        -32.372 (meters)                     GEOID18
 JV1847  DYNAMIC HEIGHT  -        135.656 (meters)      445.06  (feet) COMP
 JV1847  MODELED GRAVITY -    980,103.0   (mgal)                       NAVD 88
 JV1847
 JV1847  VERT ORDER      -  SECOND    CLASS 0
 JV1847
 JV1847.The horizontal coordinates were scaled from a map and have
 JV1847.an estimated accuracy of +/- 6 seconds.
 JV1847
 JV1847.The orthometric height was determined by differential leveling and
 JV1847.adjusted by the NATIONAL GEODETIC SURVEY
 JV1847.in June 1991.
 JV1847
 JV1847.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1847.GEOID18 height accuracy estimate available here.
 JV1847
 JV1847.Click photographs - Photos may exist for this station.
 JV1847
 JV1847.The dynamic height is computed by dividing the NAVD 88
 JV1847.geopotential number by the normal gravity value computed on the
 JV1847.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1847.degrees latitude (g = 980.6199 gals.).
 JV1847
 JV1847.The modeled gravity was interpolated from observed gravity values.
 JV1847
 JV1847;                    North         East    Units  Estimated Accuracy
 JV1847;SPC MD       -   208,090.      390,540.      MT  (+/- 180 meters Scaled)
 JV1847
 JV1847_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ186789(NAD 83)
 JV1847
 JV1847                          SUPERSEDED SURVEY CONTROL
 JV1847
 JV1847  NGVD 29 (11/26/84)  135.928  (m)          445.96   (f) ADJUSTED    2 0
 JV1847
 JV1847.Superseded values are not recommended for survey control.
 JV1847
 JV1847.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1847.See file dsdata.pdf to determine how the superseded data were derived.
 JV1847
 JV1847_MARKER: DD = SURVEY DISK
 JV1847_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JV1847_STAMPING: 445
 JV1847_MARK LOGO: CGS+SS
 JV1847_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1847
 JV1847  HISTORY     - Date     Condition        Report By
 JV1847  HISTORY     - UNK      MONUMENTED       MDGS
 JV1847  HISTORY     - 1935     GOOD             CGS
 JV1847  HISTORY     - 19960603 MARK NOT FOUND   MDSHA
 JV1847  HISTORY     - 20070406 MARK NOT FOUND   MDSHA
 JV1847  HISTORY     - 20070412 MARK NOT FOUND   MDSHA
 JV1847
 JV1847                          STATION DESCRIPTION
 JV1847
 JV1847'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1847'AT NEW WINDSOR.
 JV1847'AT NEW WINDSOR, CARROLL COUNTY, 40 FEET SOUTH OF THE SOUTHEAST
 JV1847'CORNER OF THE WESTERN MARYLAND RAILWAY STATION, 40 FEET EAST OF
 JV1847'THE EAST END OF THE STATION, AND 15 FEET SOUTH OF THE
 JV1847'CENTER LINE OF THE TRACK.  A STATE SURVEY STANDARD DISK, SET
 JV1847'IN THE TOP OF A CONCRETE POST.
 JV1847
 JV1847                          STATION RECOVERY (1996)
 JV1847
 JV1847'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1996 (SFK)
 JV1847'THE MARK WAS SEARCHED FOR AND NOT RECOVERED.  THE TRAIN STATION HAS
 JV1847'BEEN TORN DOWN AND THE AREA IS NOW A PARKING LOT.
 JV1847
 JV1847                          STATION RECOVERY (2007)
 JV1847
 JV1847'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 JV1847'THE RAILWAY STATION NO LONGER EXISTS AND THE AREA IN THE VICINITY OF
 JV1847'THE MARK IS NOW A PARKING LOT.
 JV1847
 JV1847                          STATION RECOVERY (2007)
 JV1847
 JV1847'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 JV1847'THE MARK APPEARS TO HAVE BEEN EITHER REMOVED OR UNDER A PAVED PARKING
 JV1847'LOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3852 ***********************************************************************
 JV3852  DESIGNATION -  4481
 JV3852  PID         -  JV3852
 JV3852  STATE/COUNTY-  MD/MONTGOMERY
 JV3852  COUNTRY     -  US
 JV3852  USGS QUAD   -  GAITHERSBURG (2016)
 JV3852
 JV3852                         *CURRENT SURVEY CONTROL
 JV3852  ______________________________________________________________________
 JV3852* NAD 83(1986) POSITION- 39 08 25.     (N) 077 12 47.     (W)   SCALED
 JV3852* NAVD 88 ORTHO HEIGHT -   131.335 (meters)      430.89  (feet) ADJUSTED
 JV3852  ______________________________________________________________________
 JV3852  GEOID HEIGHT    -        -31.745 (meters)                     GEOID18
 JV3852  DYNAMIC HEIGHT  -        131.266 (meters)      430.66  (feet) COMP
 JV3852  MODELED GRAVITY -    980,100.7   (mgal)                       NAVD 88
 JV3852
 JV3852  VERT ORDER      -  FIRST     CLASS II
 JV3852
 JV3852.The horizontal coordinates were scaled from a map and have
 JV3852.an estimated accuracy of +/- 6 seconds.
 JV3852
 JV3852.The orthometric height was determined by differential leveling and
 JV3852.adjusted by the NATIONAL GEODETIC SURVEY
 JV3852.in June 1991.
 JV3852
 JV3852.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3852.GEOID18 height accuracy estimate available here.
 JV3852
 JV3852.Click photographs - Photos may exist for this station.
 JV3852
 JV3852.The dynamic height is computed by dividing the NAVD 88
 JV3852.geopotential number by the normal gravity value computed on the
 JV3852.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3852.degrees latitude (g = 980.6199 gals.).
 JV3852
 JV3852.The modeled gravity was interpolated from observed gravity values.
 JV3852
 JV3852;                    North         East    Units  Estimated Accuracy
 JV3852;SPC MD       -   163,600.      381,580.      MT  (+/- 180 meters Scaled)
 JV3852
 JV3852_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ087346(NAD 83)
 JV3852
 JV3852                          SUPERSEDED SURVEY CONTROL
 JV3852
 JV3852.No superseded survey control is available for this station.
 JV3852
 JV3852_MARKER: B = BOLT
 JV3852_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3852_SP_SET: BRIDGE
 JV3852_STAMPING: BM. NO. 4481 W.S.S.C.
 JV3852_MARK LOGO: WSSC
 JV3852_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3852
 JV3852  HISTORY     - Date     Condition        Report By
 JV3852  HISTORY     - UNK      MONUMENTED       WSSC
 JV3852  HISTORY     - 1979     GOOD             NGS
 JV3852  HISTORY     - 1986     GOOD             NGS
 JV3852
 JV3852                          STATION DESCRIPTION
 JV3852
 JV3852'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3852'IN GAITHERSBURG.
 JV3852'IN GAITHERSBURG, 0.45 MILE EAST ALONG DIMOND AVENUE FROM THE JUNCTION
 JV3852'OF STATE ROUTES 117 AND 124 TO THE MARK ON THE LEFT, SET IN THE
 JV3852'NORTHWEST CORNER OF THE CONCRETE BASE SUPPORTING A ROW OF PIERS FOR
 JV3852'THE U.S. HIGHWAY 270 OVERPASS BRIDGE OVER DIMOND AVENUE, 25 FEET
 JV3852'NORTHWEST OF THE CENTERLINE OF THE AVENUE, 4 FEET NORTHWEST OF A
 JV3852'METAL GUARD RAIL, 2 FEET SOUTHWEST OF THE FIRST PIER ON THE NORTH
 JV3852'SIDE OF THE BRIDGE.
 JV3852'THE MARK IS 4 FT ABOVE AVENUE.
 JV3852
 JV3852                          STATION RECOVERY (1986)
 JV3852
 JV3852'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 JV3852'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0284 ***********************************************************************
 HU0284  DESIGNATION -  45
 HU0284  PID         -  HU0284
 HU0284  STATE/COUNTY-  MD/WORCESTER
 HU0284  COUNTRY     -  US
 HU0284  USGS QUAD   -  BERLIN (2016)
 HU0284
 HU0284                         *CURRENT SURVEY CONTROL
 HU0284  ______________________________________________________________________
 HU0284* NAD 83(1986) POSITION- 38 19 27.79   (N) 075 13 07.72   (W)   HD_HELD1
 HU0284* NAVD 88 ORTHO HEIGHT -    13.422 (meters)       44.04  (feet) ADJUSTED
 HU0284  ______________________________________________________________________
 HU0284  GEOID HEIGHT    -        -36.032 (meters)                     GEOID18
 HU0284  DYNAMIC HEIGHT  -         13.414 (meters)       44.01  (feet) COMP
 HU0284  MODELED GRAVITY -    980,005.0   (mgal)                       NAVD 88
 HU0284
 HU0284  VERT ORDER      -  SECOND    CLASS 0
 HU0284
 HU0284.The horizontal coordinates were determined by differentially corrected
 HU0284.hand held GPS observations or other comparable positioning techniques
 HU0284.and have an estimated accuracy of +/- 3 meters.
 HU0284
 HU0284.The orthometric height was determined by differential leveling and
 HU0284.adjusted by the NATIONAL GEODETIC SURVEY
 HU0284.in June 1991.
 HU0284
 HU0284.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0284.GEOID18 height accuracy estimate available here.
 HU0284
 HU0284.Click photographs - Photos may exist for this station.
 HU0284
 HU0284.The dynamic height is computed by dividing the NAVD 88
 HU0284.geopotential number by the normal gravity value computed on the
 HU0284.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0284.degrees latitude (g = 980.6199 gals.).
 HU0284
 HU0284.The modeled gravity was interpolated from observed gravity values.
 HU0284
 HU0284;                    North         East    Units  Estimated Accuracy
 HU0284;SPC MD       -    74,529.2     555,744.0     MT  (+/- 3 meters HH1 GPS) 
 HU0284
 HU0284_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8087341829(NAD 83)
 HU0284
 HU0284                          SUPERSEDED SURVEY CONTROL
 HU0284
 HU0284  NGVD 29 (11/26/84)   13.666  (m)           44.84   (f) ADJUSTED    2 0
 HU0284
 HU0284.Superseded values are not recommended for survey control.
 HU0284
 HU0284.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0284.See file dsdata.pdf to determine how the superseded data were derived.
 HU0284
 HU0284_MARKER: DB = BENCH MARK DISK
 HU0284_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0284_SP_SET: STEP
 HU0284_STAMPING: 45 BALTO 1900
 HU0284_MARK LOGO: USGS
 HU0284_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0284_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0284+SATELLITE: SATELLITE OBSERVATIONS - September 21, 2023
 HU0284
 HU0284  HISTORY     - Date     Condition        Report By
 HU0284  HISTORY     - 1900     MONUMENTED       USGS
 HU0284  HISTORY     - 1942     GOOD             CGS
 HU0284  HISTORY     - 1968     GOOD             CGS
 HU0284  HISTORY     - 1991     GOOD             USPSQD
 HU0284  HISTORY     - 20031230 GOOD             USPSQD
 HU0284  HISTORY     - 20051203 GOOD             USPSQD
 HU0284  HISTORY     - 20091011 GOOD             NGS
 HU0284  HISTORY     - 20230921 GOOD             BASE9
 HU0284
 HU0284                          STATION DESCRIPTION
 HU0284
 HU0284'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0284'AT BERLIN.
 HU0284'AT BERLIN, WORCESTER COUNTY, AT THE SOUTHEAST CORNER OF THE
 HU0284'INTERSECTION OF JEFFERSON AND MAIN STREETS, AT THE EXCHANGE AND
 HU0284'SAVINGS BANK BUILDING, IN THE SOUTH END OF THE TOP STEP OF THE
 HU0284'FRONT ENTRANCE, 30 FEET SOUTH OF THE CENTERLINE OF JEFFERSON
 HU0284'STREET, AND 23.5 FEET EAST OF THE CENTERLINE OF MAIN STREET.  A
 HU0284'UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 45 BALTO
 HU0284'1900.
 HU0284
 HU0284                          STATION RECOVERY (1968)
 HU0284
 HU0284'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968
 HU0284'RECOVERED IN GOOD CONDITION.
 HU0284
 HU0284                          STATION RECOVERY (1991)
 HU0284
 HU0284'RECOVERY NOTE BY US POWER SQUADRON 1991 (ECD)
 HU0284'RECOVERED IN GOOD CONDITION.
 HU0284
 HU0284                          STATION RECOVERY (2003)
 HU0284
 HU0284'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0284'RECOVERED IN GOOD CONDITION.
 HU0284
 HU0284                          STATION RECOVERY (2005)
 HU0284
 HU0284'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU0284'RECOVERED IN GOOD CONDITION.
 HU0284
 HU0284                          STATION RECOVERY (2009)
 HU0284
 HU0284'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 HU0284'BUILDING IS NOW A PNC BANK.
 HU0284
 HU0284                          STATION RECOVERY (2023)
 HU0284
 HU0284'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2023 (DRD)
 HU0284'THE BUILDING IS NOW A HOME DECOR STORE CALLED THE GENERAL STORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1980 ***********************************************************************
 JV1980  DESIGNATION -  450
 JV1980  PID         -  JV1980
 JV1980  STATE/COUNTY-  MD/FREDERICK
 JV1980  COUNTRY     -  US
 JV1980  USGS QUAD   -  EMMITSBURG (2016)
 JV1980
 JV1980                         *CURRENT SURVEY CONTROL
 JV1980  ______________________________________________________________________
 JV1980* NAD 83(1986) POSITION- 39 42 18.7    (N) 077 19 42.4    (W)   HD_HELD2
 JV1980* NAVD 88 ORTHO HEIGHT -   136.727 (meters)      448.58  (feet) ADJUSTED
 JV1980  ______________________________________________________________________
 JV1980  GEOID HEIGHT    -        -33.342 (meters)                     GEOID18
 JV1980  DYNAMIC HEIGHT  -        136.653 (meters)      448.34  (feet) COMP
 JV1980  MODELED GRAVITY -    980,084.5   (mgal)                       NAVD 88
 JV1980
 JV1980  VERT ORDER      -  SECOND    CLASS I
 JV1980
 JV1980.The horizontal coordinates were established by autonomous hand held GPS
 JV1980.observations and have an estimated accuracy of +/- 10 meters.
 JV1980
 JV1980.The orthometric height was determined by differential leveling and
 JV1980.adjusted by the NATIONAL GEODETIC SURVEY
 JV1980.in June 1991.
 JV1980
 JV1980.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1980.GEOID18 height accuracy estimate available here.
 JV1980
 JV1980.Click photographs - Photos may exist for this station.
 JV1980
 JV1980.The dynamic height is computed by dividing the NAVD 88
 JV1980.geopotential number by the normal gravity value computed on the
 JV1980.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1980.degrees latitude (g = 980.6199 gals.).
 JV1980
 JV1980.The modeled gravity was interpolated from observed gravity values.
 JV1980
 JV1980;                    North         East    Units  Estimated Accuracy
 JV1980;SPC MD       -   226,348.      371,831.      MT  (+/- 10 meters HH2 GPS)
 JV1980
 JV1980_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0038297629(NAD 83)
 JV1980
 JV1980                          SUPERSEDED SURVEY CONTROL
 JV1980
 JV1980  NGVD 29 (11/26/84)  136.920  (m)          449.21   (f) ADJUSTED    2 0
 JV1980
 JV1980.Superseded values are not recommended for survey control.
 JV1980
 JV1980.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1980.See file dsdata.pdf to determine how the superseded data were derived.
 JV1980
 JV1980_MARKER: DD = SURVEY DISK
 JV1980_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1980_SP_SET: BRICK FOUNDATION
 JV1980_STAMPING: 450
 JV1980_MARK LOGO: USGS
 JV1980_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1980_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1980_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1980+SATELLITE: SATELLITE OBSERVATIONS - April 06, 2023
 JV1980
 JV1980  HISTORY     - Date     Condition        Report By
 JV1980  HISTORY     - 1908     MONUMENTED       USGS
 JV1980  HISTORY     - 1942     GOOD             CGS
 JV1980  HISTORY     - 1990     GOOD             USPSQD
 JV1980  HISTORY     - 20010606 GOOD             MDSHA
 JV1980  HISTORY     - 20050830 GOOD             GEOCAC
 JV1980  HISTORY     - 20070103 GOOD             GEOCAC
 JV1980  HISTORY     - 20110326 GOOD             GEOCAC
 JV1980  HISTORY     - 20230406 GOOD             PROFLN
 JV1980
 JV1980                          STATION DESCRIPTION
 JV1980
 JV1980'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1980'AT EMMITSBURG.
 JV1980'AT EMMITSBURG, FREDERICK COUNTY, AT THE DUTCH REFORMED CHURCH,
 JV1980'IN THE FACE OF THE FIRST PILASTER NORTHWEST OF THE ENTRANCE,
 JV1980'AND ABOUT 2-1/2 FEET ABOVE THE GROUND.  A UNITED STATES
 JV1980'GEOLOGICAL SURVEY STANDARD DISK, STAMPED 450 AND SET VERTICALLY.
 JV1980
 JV1980                          STATION RECOVERY (1990)
 JV1980
 JV1980'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1980'RECOVERED IN GOOD CONDITION.
 JV1980
 JV1980                          STATION RECOVERY (2001)
 JV1980
 JV1980'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1980'RECOVERED AS DESCRIBED.
 JV1980
 JV1980                          STATION RECOVERY (2005)
 JV1980
 JV1980'RECOVERY NOTE BY GEOCACHING 2005 (RCF)
 JV1980'RECOVERED IN GOOD CONDITION.
 JV1980
 JV1980                          STATION RECOVERY (2007)
 JV1980
 JV1980'RECOVERY NOTE BY GEOCACHING 2007 (PSB)
 JV1980'CHURCH IS NOW CALLED INCARNATION UNITED CHURCH OF CHRIST.
 JV1980
 JV1980                          STATION RECOVERY (2011)
 JV1980
 JV1980'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JV1980'RECOVERED AS DESCRIBED.
 JV1980
 JV1980                          STATION RECOVERY (2023)
 JV1980
 JV1980'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2023 (JRO)
 JV1980'RECOVERED AS DESCRIBED.  ADDRESS 124 WEST MAIN ST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2501 ***********************************************************************
 JV2501  DESIGNATION -  450
 JV2501  PID         -  JV2501
 JV2501  STATE/COUNTY-  MD/FREDERICK
 JV2501  COUNTRY     -  US
 JV2501  USGS QUAD   -  LIBERTYTOWN (2016)
 JV2501
 JV2501                         *CURRENT SURVEY CONTROL
 JV2501  ______________________________________________________________________
 JV2501* NAD 83(1986) POSITION- 39 28 33.     (N) 077 11 19.     (W)   SCALED
 JV2501* NAVD 88 ORTHO HEIGHT -   136.982 (meters)      449.42  (feet) ADJUSTED
 JV2501  ______________________________________________________________________
 JV2501  GEOID HEIGHT    -        -32.310 (meters)                     GEOID18
 JV2501  DYNAMIC HEIGHT  -        136.911 (meters)      449.18  (feet) COMP
 JV2501  MODELED GRAVITY -    980,101.6   (mgal)                       NAVD 88
 JV2501
 JV2501  VERT ORDER      -  SECOND    CLASS I
 JV2501
 JV2501.The horizontal coordinates were scaled from a map and have
 JV2501.an estimated accuracy of +/- 6 seconds.
 JV2501
 JV2501.The orthometric height was determined by differential leveling and
 JV2501.adjusted by the NATIONAL GEODETIC SURVEY
 JV2501.in June 1991.
 JV2501
 JV2501.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2501.GEOID18 height accuracy estimate available here.
 JV2501
 JV2501.Click photographs - Photos may exist for this station.
 JV2501
 JV2501.The dynamic height is computed by dividing the NAVD 88
 JV2501.geopotential number by the normal gravity value computed on the
 JV2501.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2501.degrees latitude (g = 980.6199 gals.).
 JV2501
 JV2501.The modeled gravity was interpolated from observed gravity values.
 JV2501
 JV2501;                    North         East    Units  Estimated Accuracy
 JV2501;SPC MD       -   200,850.      383,770.      MT  (+/- 180 meters Scaled)
 JV2501
 JV2501_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ117718(NAD 83)
 JV2501
 JV2501                          SUPERSEDED SURVEY CONTROL
 JV2501
 JV2501  NGVD 29 (11/26/84)  137.187  (m)          450.09   (f) ADJUSTED    2 0
 JV2501
 JV2501.Superseded values are not recommended for survey control.
 JV2501
 JV2501.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2501.See file dsdata.pdf to determine how the superseded data were derived.
 JV2501
 JV2501_MARKER: DB = BENCH MARK DISK
 JV2501_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2501_SP_SET: BUILDING WALL
 JV2501_STAMPING: 450 MARYLAND
 JV2501_MARK LOGO: USGS
 JV2501_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2501_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2501_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2501+SATELLITE: SATELLITE OBSERVATIONS - January 30, 2002
 JV2501
 JV2501  HISTORY     - Date     Condition        Report By
 JV2501  HISTORY     - 1906     MONUMENTED       USGS
 JV2501  HISTORY     - 1942     GOOD             CGS
 JV2501  HISTORY     - 20020130 GOOD             MDSHA
 JV2501
 JV2501                          STATION DESCRIPTION
 JV2501
 JV2501'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2501'AT UNIONVILLE.
 JV2501'AT UNIONVILLE, FREDERICK COUNTY, ON STATE HIGHWAY 26, AT THE
 JV2501'COMMUNITY HALL, IN THE WALL AT THE NORTHEAST CORNER OF THE
 JV2501'BUILDING, 97.8 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY,
 JV2501'AND ABOUT 3 FEET ABOVE THE GROUND.  A UNITED STATES GEOLOGICAL
 JV2501'SURVEY STANDARD DISK, STAMPED 450 MARYLAND AND SET VERTICALLY.
 JV2501
 JV2501                          STATION RECOVERY (2002)
 JV2501
 JV2501'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV2501'THE STATION WAS RECOVERED IN GOOD CONDITION. IT IS 0.13 MI (0.21 KM)
 JV2501'NORTHWEST ALONG UNIONVILLE ROAD FROM THE INTERSECTION WITH
 JV2501'CLEMSONVILLE ROAD IN UNIONVILLE. TO A 1 1/2 STORY FRAME DWELLING
 JV2501'NUMBER 13629, 97.8 FT (29.8 M) SOUTHWEST OF THE CENTER INE OF THE ROAD
 JV2501'AND ABOUT 3 FT (0.9 M) ABOVE THE GROUND. A UNITED STATES GEOLOGICAL
 JV2501'SURVEY DISK, STAMPED 450 MARYLAND AND SET VERTICALLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2179 ***********************************************************************
 JV2179  DESIGNATION -  451 USGS
 JV2179  PID         -  JV2179
 JV2179  STATE/COUNTY-  MD/MONTGOMERY
 JV2179  COUNTRY     -  US
 JV2179  USGS QUAD   -  ROCKVILLE (2016)
 JV2179
 JV2179                         *CURRENT SURVEY CONTROL
 JV2179  ______________________________________________________________________
 JV2179* NAD 83(1986) POSITION- 39 05 01.2    (N) 077 09 04.8    (W)   HD_HELD2
 JV2179* NAVD 88 ORTHO HEIGHT -   137.190 (meters)      450.10  (feet) ADJUSTED
 JV2179  ______________________________________________________________________
 JV2179  GEOID HEIGHT    -        -31.726 (meters)                     GEOID18
 JV2179  DYNAMIC HEIGHT  -        137.118 (meters)      449.86  (feet) COMP
 JV2179  MODELED GRAVITY -    980,100.3   (mgal)                       NAVD 88
 JV2179
 JV2179  VERT ORDER      -  FIRST     CLASS II
 JV2179
 JV2179.The horizontal coordinates were established by autonomous hand held GPS
 JV2179.observations and have an estimated accuracy of +/- 10 meters.
 JV2179
 JV2179.The orthometric height was determined by differential leveling and
 JV2179.adjusted by the NATIONAL GEODETIC SURVEY
 JV2179.in June 1991.
 JV2179
 JV2179.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2179.GEOID18 height accuracy estimate available here.
 JV2179
 JV2179.Click photographs - Photos may exist for this station.
 JV2179
 JV2179.The dynamic height is computed by dividing the NAVD 88
 JV2179.geopotential number by the normal gravity value computed on the
 JV2179.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2179.degrees latitude (g = 980.6199 gals.).
 JV2179
 JV2179.The modeled gravity was interpolated from observed gravity values.
 JV2179
 JV2179;                    North         East    Units  Estimated Accuracy
 JV2179;SPC MD       -   157,305.      386,907.      MT  (+/- 10 meters HH2 GPS)
 JV2179
 JV2179_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1392228264(NAD 83)
 JV2179
 JV2179                          SUPERSEDED SURVEY CONTROL
 JV2179
 JV2179  NGVD 29 (11/26/84)  137.408  (m)          450.81   (f) ADJUSTED    1 2
 JV2179
 JV2179.Superseded values are not recommended for survey control.
 JV2179
 JV2179.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2179.See file dsdata.pdf to determine how the superseded data were derived.
 JV2179
 JV2179_MARKER: DB = BENCH MARK DISK
 JV2179_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2179_SP_SET: BUILDING
 JV2179_STAMPING: 451 1903
 JV2179_MARK LOGO: USGS
 JV2179_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2179_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2179+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2022
 JV2179
 JV2179  HISTORY     - Date     Condition        Report By
 JV2179  HISTORY     - 1903     MONUMENTED       USGS
 JV2179  HISTORY     - 1938     GOOD             CGS
 JV2179  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2179  HISTORY     - 20220514 GOOD             NGS
 JV2179
 JV2179                          STATION DESCRIPTION
 JV2179
 JV2179'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2179'AT ROCKVILLE.
 JV2179'AT ROCKVILLE, MONTGOMERY COUNTY, AT THE POLICE HEADQUARTERS
 JV2179'BUILDING, IN THE NORTH WALL, EAST OF THE STEPS, AND 4 FEET ABOVE
 JV2179'THE GROUND.  A UNITED STATES GEOLGICAL SURVEY STANDARD DISK,
 JV2179'STAMPED 451 1903 AND SET VERTICALLY.
 JV2179
 JV2179                          STATION RECOVERY (1987)
 JV2179
 JV2179'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2179'MARK NOT FOUND.
 JV2179
 JV2179                          STATION RECOVERY (2022)
 JV2179
 JV2179'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (KA)
 JV2179'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1849 ***********************************************************************
 JV1849  DESIGNATION -  453 RESET
 JV1849  PID         -  JV1849
 JV1849  STATE/COUNTY-  MD/CARROLL
 JV1849  COUNTRY     -  US
 JV1849  USGS QUAD   -  NEW WINDSOR (2016)
 JV1849
 JV1849                         *CURRENT SURVEY CONTROL
 JV1849  ______________________________________________________________________
 JV1849* NAD 83(1986) POSITION- 39 32 23.     (N) 077 06 17.     (W)   SCALED
 JV1849* NAVD 88 ORTHO HEIGHT -   138.29  (meters)      453.7   (feet) RESET
 JV1849  ______________________________________________________________________
 JV1849  GEOID HEIGHT    -        -32.355 (meters)                     GEOID18
 JV1849  VERT ORDER      -  THIRD
 JV1849
 JV1849.The horizontal coordinates were scaled from a map and have
 JV1849.an estimated accuracy of +/- 6 seconds.
 JV1849
 JV1849.The orthometric height was computed from unverified reset data.
 JV1849
 JV1849.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1849.GEOID18 height accuracy estimate available here.
 JV1849
 JV1849.Click photographs - Photos may exist for this station.
 JV1849
 JV1849;                    North         East    Units  Estimated Accuracy
 JV1849;SPC MD       -   207,930.      391,000.      MT  (+/- 180 meters Scaled)
 JV1849
 JV1849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ191787(NAD 83)
 JV1849
 JV1849                          SUPERSEDED SURVEY CONTROL
 JV1849
 JV1849  NGVD 29 (??/??/??)  138.50   (m)          454.4    (f) RESET       3  
 JV1849
 JV1849.Superseded values are not recommended for survey control.
 JV1849
 JV1849.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1849.See file dsdata.pdf to determine how the superseded data were derived.
 JV1849
 JV1849_MARKER: DD = SURVEY DISK
 JV1849_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1849_SP_SET: BRIDGE
 JV1849_STAMPING: 453
 JV1849_MARK LOGO: MDSRC
 JV1849_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1849
 JV1849  HISTORY     - Date     Condition        Report By
 JV1849  HISTORY     - 1958     MONUMENTED       MDSRC
 JV1849  HISTORY     - 1958     GOOD             CGS
 JV1849  HISTORY     - 19960603 MARK NOT FOUND   MDSHA
 JV1849
 JV1849                          STATION DESCRIPTION
 JV1849
 JV1849'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV1849'0.3 MI E FROM NEW WINDSOR.
 JV1849'ABOUT 0.3 MILE EAST ALONG THE WESTERN MARYLAND RAILWAY FROM
 JV1849'THE STATION AT NEW WINDSOR, AT THE EAST END OF A BRIDGE OVER A
 JV1849'SMALL CREEK, SET IN THE TOP OF THE NORTH SIDE OF THE EAST
 JV1849'ABUTMENT, AND 8 FEET NORTH OF THE CENTER LINE OF THE TRACK.
 JV1849
 JV1849                          STATION RECOVERY (1996)
 JV1849
 JV1849'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1996 (SFK)
 JV1849'THE DISK HAS BEEN PRIED OFF OF ITS STEM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1250 ***********************************************************************
 HV1250  DESIGNATION -  455 WSSC
 HV1250  PID         -  HV1250
 HV1250  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1250  COUNTRY     -  US
 HV1250  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1250
 HV1250                         *CURRENT SURVEY CONTROL
 HV1250  ______________________________________________________________________
 HV1250* NAD 83(1986) POSITION- 38 58 54.     (N) 076 55 36.     (W)   SCALED
 HV1250* NAVD 88 ORTHO HEIGHT -    15.076 (meters)       49.46  (feet) ADJUSTED
 HV1250  ______________________________________________________________________
 HV1250  GEOID HEIGHT    -        -32.160 (meters)                     GEOID18
 HV1250  DYNAMIC HEIGHT  -         15.068 (meters)       49.44  (feet) COMP
 HV1250  MODELED GRAVITY -    980,105.4   (mgal)                       NAVD 88
 HV1250
 HV1250  VERT ORDER      -  SECOND    CLASS 0
 HV1250
 HV1250.This mark is at College Park Airport (CGS)
 HV1250
 HV1250.The horizontal coordinates were scaled from a map and have
 HV1250.an estimated accuracy of +/- 6 seconds.
 HV1250
 HV1250.The orthometric height was determined by differential leveling and
 HV1250.adjusted by the NATIONAL GEODETIC SURVEY
 HV1250.in June 1991.
 HV1250
 HV1250.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1250.GEOID18 height accuracy estimate available here.
 HV1250
 HV1250.Click photographs - Photos may exist for this station.
 HV1250
 HV1250.The dynamic height is computed by dividing the NAVD 88
 HV1250.geopotential number by the normal gravity value computed on the
 HV1250.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1250.degrees latitude (g = 980.6199 gals.).
 HV1250
 HV1250.The modeled gravity was interpolated from observed gravity values.
 HV1250
 HV1250;                    North         East    Units  Estimated Accuracy
 HV1250;SPC MD       -   145,970.      406,350.      MT  (+/- 180 meters Scaled)
 HV1250
 HV1250_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ331165(NAD 83)
 HV1250
 HV1250                          SUPERSEDED SURVEY CONTROL
 HV1250
 HV1250  NGVD 29 (11/26/84)   15.299  (m)           50.19   (f) ADJUSTED    2 0
 HV1250
 HV1250.Superseded values are not recommended for survey control.
 HV1250
 HV1250.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1250.See file dsdata.pdf to determine how the superseded data were derived.
 HV1250
 HV1250_MARKER: Z = SEE DESCRIPTION
 HV1250_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1250_SP_SET: CONC FOUNDATION
 HV1250_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1250
 HV1250  HISTORY     - Date     Condition        Report By
 HV1250  HISTORY     - UNK      MONUMENTED       WSSC
 HV1250  HISTORY     - 1944     GOOD             CGS
 HV1250  HISTORY     - 1971     MARK NOT FOUND   WSSC
 HV1250
 HV1250                          STATION DESCRIPTION
 HV1250
 HV1250'DESCRIBED BY COAST AND GEODETIC SURVEY 1944
 HV1250'0.3 MI N FROM COLLEGE PARK.
 HV1250'0.3 MILE NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 HV1250'STATION AT COLLEGE PARK, PRINCE GEORGES COUNTY, 70 FEET EAST
 HV1250'OF THE EAST RAIL, AT COLLEGE PARK AIRPORT, AT THE NORTHWEST CORNER
 HV1250'OF THE NORTHMOST HANGER, IN THE NORTHWEST CORNER OF THE CONCRETE
 HV1250'FOUNDATION, AND ABOUT 6 FEET LOWER THAN THE BASE OF THE RAIL.
 HV1250'A WASHINGTON SUBURBAN SANITARY DISTRICT COPPER LAG SCREW AND
 HV1250'WASHER.
 HV1250
 HV1250                          STATION RECOVERY (1971)
 HV1250
 HV1250'RECOVERY NOTE BY WASH SUBURB SAN COMM 1971
 HV1250'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1249 ***********************************************************************
 HV1249  DESIGNATION -  456 WSSC
 HV1249  PID         -  HV1249
 HV1249  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1249  COUNTRY     -  US
 HV1249  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1249
 HV1249                         *CURRENT SURVEY CONTROL
 HV1249  ______________________________________________________________________
 HV1249* NAD 83(1986) POSITION- 38 59 03.     (N) 076 55 33.     (W)   SCALED
 HV1249* NAVD 88 ORTHO HEIGHT -    17.306 (meters)       56.78  (feet) ADJUSTED
 HV1249  ______________________________________________________________________
 HV1249  GEOID HEIGHT    -        -32.159 (meters)                     GEOID18
 HV1249  DYNAMIC HEIGHT  -         17.297 (meters)       56.75  (feet) COMP
 HV1249  MODELED GRAVITY -    980,105.6   (mgal)                       NAVD 88
 HV1249
 HV1249  VERT ORDER      -  FIRST     CLASS II
 HV1249
 HV1249.The horizontal coordinates were scaled from a map and have
 HV1249.an estimated accuracy of +/- 6 seconds.
 HV1249
 HV1249.The orthometric height was determined by differential leveling and
 HV1249.adjusted by the NATIONAL GEODETIC SURVEY
 HV1249.in June 1991.
 HV1249
 HV1249.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1249.GEOID18 height accuracy estimate available here.
 HV1249
 HV1249.Click photographs - Photos may exist for this station.
 HV1249
 HV1249.The dynamic height is computed by dividing the NAVD 88
 HV1249.geopotential number by the normal gravity value computed on the
 HV1249.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1249.degrees latitude (g = 980.6199 gals.).
 HV1249
 HV1249.The modeled gravity was interpolated from observed gravity values.
 HV1249
 HV1249;                    North         East    Units  Estimated Accuracy
 HV1249;SPC MD       -   146,250.      406,430.      MT  (+/- 180 meters Scaled)
 HV1249
 HV1249_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ331167(NAD 83)
 HV1249
 HV1249                          SUPERSEDED SURVEY CONTROL
 HV1249
 HV1249  NGVD 29 (11/26/84)   17.529  (m)           57.51   (f) ADJUSTED    1 2
 HV1249
 HV1249.Superseded values are not recommended for survey control.
 HV1249
 HV1249.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1249.See file dsdata.pdf to determine how the superseded data were derived.
 HV1249
 HV1249_MARKER: Q = CHISELED SQUARE
 HV1249_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1249_SP_SET: BRIDGE ABUTMENT
 HV1249_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1249
 HV1249  HISTORY     - Date     Condition        Report By
 HV1249  HISTORY     - UNK      MONUMENTED       WSSC
 HV1249  HISTORY     - 1933     GOOD             CGS
 HV1249  HISTORY     - 1971     MARK NOT FOUND   WSSC
 HV1249
 HV1249                          STATION DESCRIPTION
 HV1249
 HV1249'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1249'0.5 MI N FROM COLLEGE PARK.
 HV1249'ON WASHINGTON - BALTIMORE LINE OF B AND O RAILROAD, 400 FEET
 HV1249'NORTH OF MILE POST BALTIMORE 31, 300 FEET SOUTH OF U.S. GOVERNMENT
 HV1249'FISHERY, ON EAST END OF NORTH ABUTMENT OF RAILROAD BRIDGE, 6
 HV1249'FEET EAST OF EAST RAIL, AND 1 FOOT BELOW BASE OF RAIL.
 HV1249
 HV1249                          STATION RECOVERY (1971)
 HV1249
 HV1249'RECOVERY NOTE BY WASH SUBURB SAN COMM 1971
 HV1249'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1248 ***********************************************************************
 HV1248  DESIGNATION -  457 WSSC
 HV1248  PID         -  HV1248
 HV1248  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1248  COUNTRY     -  US
 HV1248  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1248
 HV1248                         *CURRENT SURVEY CONTROL
 HV1248  ______________________________________________________________________
 HV1248* NAD 83(1986) POSITION- 38 59 14.     (N) 076 55 29.     (W)   SCALED
 HV1248* NAVD 88 ORTHO HEIGHT -    16.603 (meters)       54.47  (feet) ADJUSTED
 HV1248  ______________________________________________________________________
 HV1248  GEOID HEIGHT    -        -32.159 (meters)                     GEOID18
 HV1248  DYNAMIC HEIGHT  -         16.594 (meters)       54.44  (feet) COMP
 HV1248  MODELED GRAVITY -    980,105.8   (mgal)                       NAVD 88
 HV1248
 HV1248  VERT ORDER      -  SECOND    CLASS 0
 HV1248
 HV1248.The horizontal coordinates were scaled from a map and have
 HV1248.an estimated accuracy of +/- 6 seconds.
 HV1248
 HV1248.The orthometric height was determined by differential leveling and
 HV1248.adjusted by the NATIONAL GEODETIC SURVEY
 HV1248.in June 1991.
 HV1248
 HV1248.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1248.GEOID18 height accuracy estimate available here.
 HV1248
 HV1248.Click photographs - Photos may exist for this station.
 HV1248
 HV1248.The dynamic height is computed by dividing the NAVD 88
 HV1248.geopotential number by the normal gravity value computed on the
 HV1248.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1248.degrees latitude (g = 980.6199 gals.).
 HV1248
 HV1248.The modeled gravity was interpolated from observed gravity values.
 HV1248
 HV1248;                    North         East    Units  Estimated Accuracy
 HV1248;SPC MD       -   146,590.      406,520.      MT  (+/- 180 meters Scaled)
 HV1248
 HV1248_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ332171(NAD 83)
 HV1248
 HV1248                          SUPERSEDED SURVEY CONTROL
 HV1248
 HV1248  NGVD 29 (11/26/84)   16.826  (m)           55.20   (f) ADJUSTED    2 0
 HV1248
 HV1248.Superseded values are not recommended for survey control.
 HV1248
 HV1248.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1248.See file dsdata.pdf to determine how the superseded data were derived.
 HV1248
 HV1248_MARKER: Z = SEE DESCRIPTION
 HV1248_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1248_SP_SET: CONC BASE
 HV1248_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1248
 HV1248  HISTORY     - Date     Condition        Report By
 HV1248  HISTORY     - UNK      MONUMENTED       WSSC
 HV1248  HISTORY     - 1951     GOOD             CGS
 HV1248  HISTORY     - 1971     MARK NOT FOUND   WSSC
 HV1248
 HV1248                          STATION DESCRIPTION
 HV1248
 HV1248'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1248'0.7 MI N FROM COLLEGE PARK.
 HV1248'0.7 MILE NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 HV1248'COLLEGE PARK, PRINCE GEORGES COUNTY, AT LAKELAND, ACROSS THE
 HV1248'TRACK FROM THE U.S. BUREAU OF FISHERIES HATCHERY, AT SIGNAL
 HV1248'W 30-1, IN THE NORTHEAST CORNER OF THE CONCRETE BASE, 6 FEET
 HV1248'WEST OF THE WEST RAIL, AND ABOUT 1 FOOT LOWER THAN THE BASE
 HV1248'OF THE RAIL.  A WASHINGTON SUBURBAN SANITARY DISTRICT COPPER
 HV1248'LAG SCREW AND WASHER.
 HV1248
 HV1248                          STATION RECOVERY (1971)
 HV1248
 HV1248'RECOVERY NOTE BY WASH SUBURB SAN COMM 1971
 HV1248'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1246 ***********************************************************************
 HV1246  DESIGNATION -  458 WSSC
 HV1246  PID         -  HV1246
 HV1246  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1246  COUNTRY     -  US
 HV1246  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1246
 HV1246                         *CURRENT SURVEY CONTROL
 HV1246  ______________________________________________________________________
 HV1246* NAD 83(1986) POSITION- 38 59 29.     (N) 076 55 24.     (W)   SCALED
 HV1246* NAVD 88 ORTHO HEIGHT -    16.538 (meters)       54.26  (feet) ADJUSTED
 HV1246  ______________________________________________________________________
 HV1246  GEOID HEIGHT    -        -32.158 (meters)                     GEOID18
 HV1246  DYNAMIC HEIGHT  -         16.530 (meters)       54.23  (feet) COMP
 HV1246  MODELED GRAVITY -    980,105.9   (mgal)                       NAVD 88
 HV1246
 HV1246  VERT ORDER      -  SECOND    CLASS 0
 HV1246
 HV1246.The horizontal coordinates were scaled from a map and have
 HV1246.an estimated accuracy of +/- 6 seconds.
 HV1246
 HV1246.The orthometric height was determined by differential leveling and
 HV1246.adjusted by the NATIONAL GEODETIC SURVEY
 HV1246.in June 1991.
 HV1246
 HV1246.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1246.GEOID18 height accuracy estimate available here.
 HV1246
 HV1246.Click photographs - Photos may exist for this station.
 HV1246
 HV1246.The dynamic height is computed by dividing the NAVD 88
 HV1246.geopotential number by the normal gravity value computed on the
 HV1246.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1246.degrees latitude (g = 980.6199 gals.).
 HV1246
 HV1246.The modeled gravity was interpolated from observed gravity values.
 HV1246
 HV1246;                    North         East    Units  Estimated Accuracy
 HV1246;SPC MD       -   147,050.      406,640.      MT  (+/- 180 meters Scaled)
 HV1246
 HV1246_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ334175(NAD 83)
 HV1246
 HV1246                          SUPERSEDED SURVEY CONTROL
 HV1246
 HV1246  NGVD 29 (11/26/84)   16.763  (m)           55.00   (f) ADJUSTED    2 0
 HV1246
 HV1246.Superseded values are not recommended for survey control.
 HV1246
 HV1246.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1246.See file dsdata.pdf to determine how the superseded data were derived.
 HV1246
 HV1246_MARKER: Z = SEE DESCRIPTION
 HV1246_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1246_SP_SET: CULVERT
 HV1246_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1246
 HV1246  HISTORY     - Date     Condition        Report By
 HV1246  HISTORY     - UNK      MONUMENTED       WSSC
 HV1246  HISTORY     - 1971     GOOD             NGS
 HV1246
 HV1246                          STATION DESCRIPTION
 HV1246
 HV1246'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1246'AT COLLEGE PARK.
 HV1246'AT COLLEGE PARK, AT THE SUBDIVISION OF BERWYN, ABOUT 1.15
 HV1246'MILES SOUTHWEST ALONG U.S. HIGHWAY 1 FROM THE INTERSTATE
 HV1246'HIGHWAY 495 (CAPITOL BELTWAY) INTERCHANGE AT COLLEGE PARK, THENCE
 HV1246'0.6 MILE EAST ALONG GREENBELT ROAD, THENCE 0.5 MILE SOUTH ALONG THE
 HV1246'BALTIMORE AND OHIO RAILROAD, 8 FEET WEST OF THE WEST RAIL,
 HV1246'DIRECTLY ACROSS THE TRACKS FROM POLE NUMBER 3020, ABOUT 2 FEET
 HV1246'BELOW THE LEVEL OF THE TRACKS, AND IS A LAG SCREW AND WASHER
 HV1246'SET IN THE TOP OF THE NORTH END OF THE WEST CONCRETE HEADWALL
 HV1246'OF A CONCRETE CULVERT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB9768 ***********************************************************************
 AB9768  DESIGNATION -  4593
 AB9768  PID         -  AB9768
 AB9768  STATE/COUNTY-  MD/PRINCE GEORGES
 AB9768  COUNTRY     -  US
 AB9768  USGS QUAD   -  LANHAM (2016)
 AB9768
 AB9768                         *CURRENT SURVEY CONTROL
 AB9768  ______________________________________________________________________
 AB9768* NAD 83(1986) POSITION- 38 59 24.     (N) 076 50 11.     (W)   SCALED
 AB9768* NAVD 88 ORTHO HEIGHT -    56.628 (meters)      185.79  (feet) ADJUSTED
 AB9768  ______________________________________________________________________
 AB9768  GEOID HEIGHT    -        -32.387 (meters)                     GEOID18
 AB9768  DYNAMIC HEIGHT  -         56.597 (meters)      185.69  (feet) COMP
 AB9768  MODELED GRAVITY -    980,089.9   (mgal)                       NAVD 88
 AB9768
 AB9768  VERT ORDER      -  SECOND    CLASS II
 AB9768
 AB9768.The horizontal coordinates were scaled from a map and have
 AB9768.an estimated accuracy of +/- 6 seconds.
 AB9768
 AB9768.The orthometric height was determined by differential leveling and
 AB9768.adjusted by the NATIONAL GEODETIC SURVEY
 AB9768.in September 1997.
 AB9768
 AB9768.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB9768.GEOID18 height accuracy estimate available here.
 AB9768
 AB9768.Click photographs - Photos may exist for this station.
 AB9768
 AB9768.The dynamic height is computed by dividing the NAVD 88
 AB9768.geopotential number by the normal gravity value computed on the
 AB9768.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB9768.degrees latitude (g = 980.6199 gals.).
 AB9768
 AB9768.The modeled gravity was interpolated from observed gravity values.
 AB9768
 AB9768;                    North         East    Units  Estimated Accuracy
 AB9768;SPC MD       -   146,910.      414,170.      MT  (+/- 180 meters Scaled)
 AB9768
 AB9768_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ409172(NAD 83)
 AB9768
 AB9768                          SUPERSEDED SURVEY CONTROL
 AB9768
 AB9768.No superseded survey control is available for this station.
 AB9768
 AB9768_MARKER: B = BOLT
 AB9768_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB9768_STAMPING: WSSC NO 4593
 AB9768_MARK LOGO: WSSC
 AB9768_MAGNETIC: S = STEEL SPIKE IMBEDDED IN MONUMENT
 AB9768_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB9768+STABILITY: SURFACE MOTION
 AB9768_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AB9768+SATELLITE: SATELLITE OBSERVATIONS - April 15, 1996
 AB9768
 AB9768  HISTORY     - Date     Condition        Report By
 AB9768  HISTORY     - 1977     MONUMENTED       WSSC
 AB9768  HISTORY     - 19960415 GOOD             RICE
 AB9768
 AB9768                          STATION DESCRIPTION
 AB9768
 AB9768'DESCRIBED BY WASH SUBURB SAN COMM 1977
 AB9768'ON THE GROUNDS OF DUVAL HIGH SCHOOL, NEAR GODDARD SPACE FLIGHT CENTER,
 AB9768'2 MILES (3.2 KM) EAST OF GREENBELT, 3 MILES (4.8 KM) WEST OF BOWIE
 AB9768'MARYLAND, 2 MILES (3.2 KM) EAST OF THE BALTIMORE WASHINGTON PARKWAY
 AB9768'ALONG ROUTE 193.  75 M (246.1 FT) SOUTHWEST OF THE INTERSECTION OF
 AB9768'GREENBELT ROAD AND GOODLUCK ROAD, 2.0 M (6.6 FT) EAST OF THE NORTHEAST
 AB9768'CORNER OF DUVAL HIGH SCHOOL, 8.2 M (26.9 FT) SOUTH OF A 0.7 M (2.3 FT)
 AB9768'DIAMETER OAK TREE, 6.5 M (21.3 FT) WEST OF A 0.5 M (1.6 FT) DIAMETER
 AB9768'OAK TREE, 19.0 METERS (62.3 FT) WEST OF A SIDEWALK.
 AB9768
 AB9768                          STATION RECOVERY (1996)
 AB9768
 AB9768'RECOVERY NOTE BY RICE ASSOCIATES PC 1996 (RJM)
 AB9768'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8518 ***********************************************************************
 AI8518  DESIGNATION -  45CA
 AI8518  PID         -  AI8518
 AI8518  STATE/COUNTY-  MD/HOWARD
 AI8518  COUNTRY     -  US
 AI8518  USGS QUAD   -  CLARKSVILLE (2016)
 AI8518
 AI8518                         *CURRENT SURVEY CONTROL
 AI8518  ______________________________________________________________________
 AI8518* NAD 83(2011) POSITION- 39 08 58.52623(N) 076 56 44.89858(W)   ADJUSTED
 AI8518* NAD 83(2011) ELLIP HT-    97.851 (meters)        (06/27/12)   ADJUSTED
 AI8518* NAD 83(2011) EPOCH   -  2010.00
 AI8518* NAVD 88 ORTHO HEIGHT -   129.9   (meters)      426.    (feet) GPS OBS
 AI8518  ______________________________________________________________________
 AI8518  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8518  GEOID HEIGHT    -        -32.015 (meters)                     GEOID99
 AI8518  GEOID HEIGHT    -        -32.037 (meters)                     GEOID18
 AI8518  NAD 83(2011) X  -  1,118,732.299 (meters)                     COMP
 AI8518  NAD 83(2011) Y  - -4,824,935.772 (meters)                     COMP
 AI8518  NAD 83(2011) Z  -  4,005,271.274 (meters)                     COMP
 AI8518  LAPLACE CORR    -         -3.23  (seconds)                    DEFLEC18
 AI8518
 AI8518  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8518  Standards:
 AI8518         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8518            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8518  -------------------------------------------------------------------
 AI8518  NETWORK    1.23   1.49           0.52   0.48   0.76     -0.13748601
 AI8518  -------------------------------------------------------------------
 AI8518  Click here for local accuracies and other accuracy information.
 AI8518
 AI8518.The horizontal coordinates were established by GPS observations
 AI8518.and adjusted by the National Geodetic Survey in June 2012.
 AI8518
 AI8518.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8518.been affixed to the stable North American tectonic plate. See 
 AI8518.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8518
 AI8518.The horizontal coordinates are valid at the epoch date displayed above
 AI8518.which is a decimal equivalence of Year/Month/Day.
 AI8518
 AI8518.The orthometric height was determined by GPS observations and a
 AI8518.high-resolution geoid model.
 AI8518
 AI8518.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8518.GEOID18 height accuracy estimate available here.
 AI8518
 AI8518.Click photographs - Photos may exist for this station.
 AI8518
 AI8518.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8518
 AI8518.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8518
 AI8518.The ellipsoidal height was determined by GPS observations
 AI8518.and is referenced to NAD 83.
 AI8518
 AI8518. The following values were computed from the NAD 83(2011) position.
 AI8518
 AI8518;                    North         East     Units Scale Factor Converg.
 AI8518;SPC MD       -   164,613.958   404,684.621   MT  0.99996123   +0 02 02.5
 AI8518;SPC MD       -   540,070.96  1,327,702.79   sFT  0.99996123   +0 02 02.5
 AI8518;UTM  18      - 4,335,179.979   331,858.050   MT  0.99994812   -1 13 43.6
 AI8518
 AI8518!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8518!SPC MD       -   0.99998465  x   0.99996123  =   0.99994588
 AI8518!UTM  18      -   0.99998465  x   0.99994812  =   0.99993277
 AI8518
 AI8518_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3185835179(NAD 83)
 AI8518
 AI8518                          SUPERSEDED SURVEY CONTROL
 AI8518
 AI8518  NAD 83(2007)-  39 08 58.52634(N)    076 56 44.89948(W) AD(2002.00) 0
 AI8518  ELLIP H (02/10/07)   97.878  (m)                       GP(2002.00)    
 AI8518  ELLIP H (08/30/02)   97.867  (m)                       GP(       ) 4 2
 AI8518  NAD 83(1991)-  39 08 58.52658(N)    076 56 44.89900(W) AD(       ) 1
 AI8518  ELLIP H (11/16/00)   97.784  (m)                       GP(       ) 4 1
 AI8518
 AI8518.Superseded values are not recommended for survey control.
 AI8518
 AI8518.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8518.See file dsdata.pdf to determine how the superseded data were derived.
 AI8518
 AI8518_MARKER: DD = SURVEY DISK
 AI8518_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8518_STAMPING: 45CA
 AI8518_MARK LOGO: MD-027
 AI8518_PROJECTION: FLUSH
 AI8518_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8518_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8518+STABILITY: SURFACE MOTION
 AI8518_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8518+SATELLITE: SATELLITE OBSERVATIONS - November 17, 2009
 AI8518
 AI8518  HISTORY     - Date     Condition        Report By
 AI8518  HISTORY     - 1992     MONUMENTED       MD-027
 AI8518  HISTORY     - 20000915 GOOD             MD-027
 AI8518  HISTORY     - 20091117 GOOD             NGS
 AI8518
 AI8518                          STATION DESCRIPTION
 AI8518
 AI8518'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8518'DESCRIPTION BY HOWARD COUNTY 2000.  THE STATION IS LOCATED 1.3
 AI8518'MILES WEST FROM FULTON ALONG LIMEKILN ROAD.  TO REACH THE STATION
 AI8518'FROM THE US POST OFFICE AT FULTON GO  ABOUT 300 FEET SOUTH
 AI8518'ALONG     STATE HIGHWAY 216 TO INTERSECTION WITH LIMEKILN ROAD,
 AI8518'TURN RIGHT     (WEST) AND FOLLOW LIMEKILN ROAD FOR 1.35 MILES TO THE
 AI8518'STATION ON     THE LEFT SIDE OF THE ROAD (SOUTH).  THE STATION IS
 AI8518'ACROSS THE     STREET TO THE ENTRANCE TO FENTRESS FARM, 9.4 FEET TO
 AI8518'THE SOUTH     EDGE OF THE ROAD, 16.8 FEET EAST OF POLE C AND P 5  ,
 AI8518'34.9
 AI8518'FEET WEST OF     POLE G AND E 460861 AND 8.4 FEET NORTH OF A WIRE
 AI8518'FENCE.   THE MARK IS  A   STANDARD HOWARD COUNTY SURVEY DISC SET
 AI8518'ON  CONCRETE BASE ,    FLUSH WITH THE GROUND.
 AI8518'
 AI8518
 AI8518                          STATION RECOVERY (2009)
 AI8518
 AI8518'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 AI8518'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV3969 ***********************************************************************
 HV3969  DESIGNATION -  460 WSSC
 HV3969  PID         -  HV3969
 HV3969  STATE/COUNTY-  MD/PRINCE GEORGES
 HV3969  COUNTRY     -  US
 HV3969  USGS QUAD   -  WASHINGTON EAST (2016)
 HV3969
 HV3969                         *CURRENT SURVEY CONTROL
 HV3969  ______________________________________________________________________
 HV3969* NAD 83(1986) POSITION- 38 59 49.     (N) 076 55 14.     (W)   SCALED
 HV3969* NAVD 88 ORTHO HEIGHT -    18.541 (meters)       60.83  (feet) ADJUSTED
 HV3969  ______________________________________________________________________
 HV3969  GEOID HEIGHT    -        -32.160 (meters)                     GEOID18
 HV3969  DYNAMIC HEIGHT  -         18.531 (meters)       60.80  (feet) COMP
 HV3969  MODELED GRAVITY -    980,105.4   (mgal)                       NAVD 88
 HV3969
 HV3969  VERT ORDER      -  FIRST     CLASS II
 HV3969
 HV3969.The horizontal coordinates were scaled from a map and have
 HV3969.an estimated accuracy of +/- 6 seconds.
 HV3969
 HV3969.The orthometric height was determined by differential leveling and
 HV3969.adjusted by the NATIONAL GEODETIC SURVEY
 HV3969.in June 1991.
 HV3969
 HV3969.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV3969.GEOID18 height accuracy estimate available here.
 HV3969
 HV3969.Click photographs - Photos may exist for this station.
 HV3969
 HV3969.The dynamic height is computed by dividing the NAVD 88
 HV3969.geopotential number by the normal gravity value computed on the
 HV3969.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV3969.degrees latitude (g = 980.6199 gals.).
 HV3969
 HV3969.The modeled gravity was interpolated from observed gravity values.
 HV3969
 HV3969;                    North         East    Units  Estimated Accuracy
 HV3969;SPC MD       -   147,670.      406,880.      MT  (+/- 180 meters Scaled)
 HV3969
 HV3969_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ336181(NAD 83)
 HV3969
 HV3969                          SUPERSEDED SURVEY CONTROL
 HV3969
 HV3969  NGVD 29 (11/26/84)   18.765  (m)           61.56   (f) ADJUSTED    1 2
 HV3969
 HV3969.Superseded values are not recommended for survey control.
 HV3969
 HV3969.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV3969.See file dsdata.pdf to determine how the superseded data were derived.
 HV3969
 HV3969_MARKER: DB = BENCH MARK DISK
 HV3969_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV3969_SP_SET: MILEPOST
 HV3969_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV3969
 HV3969  HISTORY     - Date     Condition        Report By
 HV3969  HISTORY     - UNK      MONUMENTED       WSSC
 HV3969  HISTORY     - 1933     GOOD             CGS
 HV3969
 HV3969                          STATION DESCRIPTION
 HV3969
 HV3969'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV3969'AT BRANCHVILLE.
 HV3969'AT BRANCHVILLE, PRINCE GEORGES COUNTY, ABOUT 700 FEET SOUTH OF
 HV3969'THE BALTIMORE AND OHIO RAILROAD STATION, ON THE TOP OF OLD
 HV3969'MILEPOST BALTIMORE 30, 7 FEET WEST OF THE WEST RAIL, AND 3 FEET
 HV3969'HIGHER THAN THE RAIL.  THE HIGH POINT ON THE MILEPOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8048 ***********************************************************************
 HV8048  DESIGNATION -  460 WSSC RESET
 HV8048  PID         -  HV8048
 HV8048  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8048  COUNTRY     -  US
 HV8048  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8048
 HV8048                         *CURRENT SURVEY CONTROL
 HV8048  ______________________________________________________________________
 HV8048* NAD 83(1986) POSITION- 38 59 49.     (N) 076 55 14.     (W)   SCALED
 HV8048* NAVD 88 ORTHO HEIGHT -    18.413 (meters)       60.41  (feet) ADJUSTED
 HV8048  ______________________________________________________________________
 HV8048  GEOID HEIGHT    -        -32.160 (meters)                     GEOID18
 HV8048  DYNAMIC HEIGHT  -         18.403 (meters)       60.38  (feet) COMP
 HV8048  MODELED GRAVITY -    980,105.4   (mgal)                       NAVD 88
 HV8048
 HV8048  VERT ORDER      -  FIRST     CLASS I
 HV8048
 HV8048.The horizontal coordinates were scaled from a map and have
 HV8048.an estimated accuracy of +/- 6 seconds.
 HV8048
 HV8048.The orthometric height was determined by differential leveling and
 HV8048.adjusted by the NATIONAL GEODETIC SURVEY
 HV8048.in June 1991.
 HV8048
 HV8048.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8048.GEOID18 height accuracy estimate available here.
 HV8048
 HV8048.Click photographs - Photos may exist for this station.
 HV8048
 HV8048.The dynamic height is computed by dividing the NAVD 88
 HV8048.geopotential number by the normal gravity value computed on the
 HV8048.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8048.degrees latitude (g = 980.6199 gals.).
 HV8048
 HV8048.The modeled gravity was interpolated from observed gravity values.
 HV8048
 HV8048;                    North         East    Units  Estimated Accuracy
 HV8048;SPC MD       -   147,670.      406,880.      MT  (+/- 180 meters Scaled)
 HV8048
 HV8048_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ336181(NAD 83)
 HV8048
 HV8048                          SUPERSEDED SURVEY CONTROL
 HV8048
 HV8048  NGVD 29 (11/26/84)   18.639  (m)           61.15   (f) ADJUSTED    1 1
 HV8048
 HV8048.Superseded values are not recommended for survey control.
 HV8048
 HV8048.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8048.See file dsdata.pdf to determine how the superseded data were derived.
 HV8048
 HV8048_MARKER: DD = SURVEY DISK
 HV8048_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV8048_SP_SET: MILEPOST
 HV8048_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8048
 HV8048  HISTORY     - Date     Condition        Report By
 HV8048  HISTORY     - UNK      MONUMENTED       WSSC
 HV8048  HISTORY     - 1971     GOOD             NGS
 HV8048
 HV8048                          STATION DESCRIPTION
 HV8048
 HV8048'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV8048'AT COLLEGE PARK.
 HV8048'AT COLLEGE PARK, ABOUT 1.15 MILES SOUTHWEST ALONG U.S. HIGHWAY
 HV8048'1 FROM THE INTERSTATE HIGHWAY 495 (CAPITOL BELTWAY)
 HV8048'INTERCHANGE, THENCE 0.6 MILE EAST ALONG GREENBELT ROAD, THENCE
 HV8048'0.1 MILE SOUTH ALONG THE BALTIMORE AND OHIO RAILROAD, 21 FEET
 HV8048'WEST OF THE CENTER LINE OF A DIRT ROAD, 24 FEET EAST OF THE
 HV8048'CENTER LINE OF EAST TRACK, 60 FEET SOUTH OF POLE NUMBER 2950,
 HV8048'ABOUT 3 FEET ABOVE THE LEVEL OF THE TRACK, AND IS THE TOP OF A
 HV8048'STONE MILEPOST INDICATING BALTIMORE 30 WASHINGTON 10.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0812 ***********************************************************************
 HU0812  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0812  DESIGNATION -  47
 HU0812  PID         -  HU0812
 HU0812  STATE/COUNTY-  MD/CAROLINE
 HU0812  COUNTRY     -  US
 HU0812  USGS QUAD   -  RIDGELY (2017)
 HU0812
 HU0812                         *CURRENT SURVEY CONTROL
 HU0812  ______________________________________________________________________
 HU0812* NAD 83(1986) POSITION- 38 55 00.3    (N) 075 56 23.7    (W)   HD_HELD2
 HU0812* NAVD 88 ORTHO HEIGHT -    13.916 (meters)       45.66  (feet) ADJUSTED
 HU0812  ______________________________________________________________________
 HU0812  GEOID HEIGHT    -        -34.559 (meters)                     GEOID18
 HU0812  DYNAMIC HEIGHT  -         13.908 (meters)       45.63  (feet) COMP
 HU0812  MODELED GRAVITY -    980,049.3   (mgal)                       NAVD 88
 HU0812
 HU0812  VERT ORDER      -  SECOND    CLASS I
 HU0812
 HU0812.The horizontal coordinates were established by autonomous hand held GPS
 HU0812.observations and have an estimated accuracy of +/- 10 meters.
 HU0812
 HU0812.The orthometric height was determined by differential leveling and
 HU0812.adjusted by the NATIONAL GEODETIC SURVEY
 HU0812.in September 2004.
 HU0812
 HU0812.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0812.GEOID18 height accuracy estimate available here.
 HU0812
 HU0812.This Tidal Bench Mark is designated as VM 17863
 HU0812.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0812
 HU0812.Click photographs - Photos may exist for this station.
 HU0812
 HU0812.The dynamic height is computed by dividing the NAVD 88
 HU0812.geopotential number by the normal gravity value computed on the
 HU0812.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0812.degrees latitude (g = 980.6199 gals.).
 HU0812
 HU0812.The modeled gravity was interpolated from observed gravity values.
 HU0812
 HU0812;                    North         East    Units  Estimated Accuracy
 HU0812;SPC MD       -   139,298.      491,932.      MT  (+/- 10 meters HH2 GPS)
 HU0812
 HU0812_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1851407958(NAD 83)
 HU0812
 HU0812                          SUPERSEDED SURVEY CONTROL
 HU0812
 HU0812  NAVD 88 (06/15/91)   13.902  (m)           45.61   (f) SUPERSEDED  2 0
 HU0812  NGVD 29 (11/26/84)   14.136  (m)           46.38   (f) ADJUSTED    2 0
 HU0812
 HU0812.Superseded values are not recommended for survey control.
 HU0812
 HU0812.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0812.See file dsdata.pdf to determine how the superseded data were derived.
 HU0812
 HU0812_MARKER: DB = BENCH MARK DISK
 HU0812_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0812_SP_SET: BUILDING
 HU0812_STAMPING: 47 ADJ 1903
 HU0812_MARK LOGO: MDSHA
 HU0812_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0812_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0812_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0812+SATELLITE: SATELLITE OBSERVATIONS - June 14, 2017
 HU0812
 HU0812  HISTORY     - Date     Condition        Report By
 HU0812  HISTORY     - 1903     MONUMENTED       USGS
 HU0812  HISTORY     - 1943     GOOD             CGS
 HU0812  HISTORY     - 20010514 GOOD             MDSHA
 HU0812  HISTORY     - 20020124 GOOD             USPSQD
 HU0812  HISTORY     - 20170614 GOOD             MDSHA
 HU0812
 HU0812                          STATION DESCRIPTION
 HU0812
 HU0812'DESCRIBED BY COAST AND GEODETIC SURVEY 1943
 HU0812'AT HILLSBORO.
 HU0812'AT HILLSBORO, CAROLINE COUNTY, EAST OF THE POST OFFICE ALONG STATE
 HU0812'HIGHWAY 404, AT THE FRANK FLEMMING HOUSE, IN THE NORTHEAST CORNER
 HU0812'OF THE ORIGINAL BRICK FOUNDATION, AND ABOUT 4 FEET ABOVE THE
 HU0812'GROUND.  A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED
 HU0812'47 ADJ 1903 AND SET VERTICALLY.
 HU0812
 HU0812                          STATION RECOVERY (2001)
 HU0812
 HU0812'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU0812'THE MARK IS LOCATED IN HILLSBORO.  TO REACH FROM THE POST OFFICE IN
 HU0812'HILLSBORO, GO EAST ON STATE HIGHWAY ALT 404 FOR 60 METERS (200 FT) TO
 HU0812'A LARGE TWO-STORY HOUSE AND THE MARK ON THE RIGHT. OWNERSHIP---MR.
 HU0812'JOHN SERINO, 22157 MAIN STREET, HILLSBORO, MARYLAND, 21641.  THE MARK
 HU0812'IS SET VERTICALLY IN THE NORTHEAST CORNER OF THE BRICK FOUNDATION OF
 HU0812'THE HOUSE, 23.7 METERS (77.7 FEET) SOUTHEAST OF A POWERLINE POLE
 HU0812'NUMBER 37291/13304, 23.3 METERS (76.3 FEET) SOUTH OF THE CENTERLINE OF
 HU0812'STATE HIGHWAY ALT 404, 9.1 METERS (30.0 FEET) WEST OF THE CENTERLINE
 HU0812'OF A DRIVEWAY FOR THE HOUSE, 0.5 METERS (1.7 FEET) EAST OF THE EAST
 HU0812'SIDE OF A PORCH, 0.3 METERS (1.0 FEET) WEST OF THE NORTHEAST CORNER OF
 HU0812'THE HOUSE, AND ABOUT 0.8 METERS (2.6 FEET) ABOVE THE LEVEL OF THE
 HU0812'GROUND.
 HU0812
 HU0812                          STATION RECOVERY (2002)
 HU0812
 HU0812'RECOVERY NOTE BY US POWER SQUADRON 2002 (KNP)
 HU0812'RECOVERED IN GOOD CONDITION.
 HU0812
 HU0812                          STATION RECOVERY (2017)
 HU0812
 HU0812'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2017 (AG)
 HU0812'MARK FOUND COVERING BY EVERGREEN BUSHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1862 ***********************************************************************
 JV1862  DESIGNATION -  47 PRR
 JV1862  PID         -  JV1862
 JV1862  STATE/COUNTY-  MD/CARROLL
 JV1862  COUNTRY     -  US
 JV1862  USGS QUAD   -  UNION BRIDGE (2016)
 JV1862
 JV1862                         *CURRENT SURVEY CONTROL
 JV1862  ______________________________________________________________________
 JV1862* NAD 83(1986) POSITION- 39 35 40.     (N) 077 14 09.     (W)   SCALED
 JV1862* NAVD 88 ORTHO HEIGHT -   128.933 (meters)      423.01  (feet) ADJUSTED
 JV1862  ______________________________________________________________________
 JV1862  GEOID HEIGHT    -        -32.856 (meters)                     GEOID18
 JV1862  DYNAMIC HEIGHT  -        128.864 (meters)      422.78  (feet) COMP
 JV1862  MODELED GRAVITY -    980,089.1   (mgal)                       NAVD 88
 JV1862
 JV1862  VERT ORDER      -  SECOND    CLASS 0
 JV1862
 JV1862.The horizontal coordinates were scaled from a map and have
 JV1862.an estimated accuracy of +/- 6 seconds.
 JV1862
 JV1862.The orthometric height was determined by differential leveling and
 JV1862.adjusted by the NATIONAL GEODETIC SURVEY
 JV1862.in June 1991.
 JV1862
 JV1862.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1862.GEOID18 height accuracy estimate available here.
 JV1862
 JV1862.Click photographs - Photos may exist for this station.
 JV1862
 JV1862.The dynamic height is computed by dividing the NAVD 88
 JV1862.geopotential number by the normal gravity value computed on the
 JV1862.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1862.degrees latitude (g = 980.6199 gals.).
 JV1862
 JV1862.The modeled gravity was interpolated from observed gravity values.
 JV1862
 JV1862;                    North         East    Units  Estimated Accuracy
 JV1862;SPC MD       -   214,030.      379,740.      MT  (+/- 180 meters Scaled)
 JV1862
 JV1862_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ080851(NAD 83)
 JV1862
 JV1862                          SUPERSEDED SURVEY CONTROL
 JV1862
 JV1862  NGVD 29 (11/26/84)  129.139  (m)          423.68   (f) ADJUSTED    2 0
 JV1862
 JV1862.Superseded values are not recommended for survey control.
 JV1862
 JV1862.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1862.See file dsdata.pdf to determine how the superseded data were derived.
 JV1862
 JV1862_MARKER: B = BOLT
 JV1862_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1862_SP_SET: TURNTABLE
 JV1862_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1862
 JV1862  HISTORY     - Date     Condition        Report By
 JV1862  HISTORY     - UNK      MONUMENTED       PRR
 JV1862  HISTORY     - 1935     GOOD             CGS
 JV1862  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV1862
 JV1862                          STATION DESCRIPTION
 JV1862
 JV1862'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1862'0.3 MI S FROM KEYMAR.
 JV1862'ABOUT 0.3 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV1862'WESTERN MARYLAND RAILWAY STATION AT KEYMAR, CARROLL COUNTY, ABOUT
 JV1862'550 FEET SOUTH OF MILEPOST 17, IN THE TOP OF THE WEST SIDE OF AN
 JV1862'OLD CONCRETE TURNTABLE, AND 18 FEET EAST OF THE CENTER LINE OF THE
 JV1862'TRACK.  A COPPER BOLT.
 JV1862
 JV1862                          STATION RECOVERY (1953)
 JV1862
 JV1862'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JV1862'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0728 ***********************************************************************
 HU0728  DESIGNATION -  479 W USE
 HU0728  PID         -  HU0728
 HU0728  STATE/COUNTY-  MD/WORCESTER
 HU0728  COUNTRY     -  US
 HU0728  USGS QUAD   -  DIVIDING CREEK (2016)
 HU0728
 HU0728                         *CURRENT SURVEY CONTROL
 HU0728  ______________________________________________________________________
 HU0728* NAD 83(1986) POSITION- 38 10 53.9    (N) 075 30 29.6    (W)   HD_HELD2
 HU0728* NAVD 88 ORTHO HEIGHT -    10.942 (meters)       35.90  (feet) ADJUSTED
 HU0728  ______________________________________________________________________
 HU0728  GEOID HEIGHT    -        -36.167 (meters)                     GEOID18
 HU0728  DYNAMIC HEIGHT  -         10.935 (meters)       35.88  (feet) COMP
 HU0728  MODELED GRAVITY -    979,985.3   (mgal)                       NAVD 88
 HU0728
 HU0728  VERT ORDER      -  SECOND    CLASS 0
 HU0728
 HU0728.The horizontal coordinates were established by autonomous hand held GPS
 HU0728.observations and have an estimated accuracy of +/- 10 meters.
 HU0728
 HU0728.The orthometric height was determined by differential leveling and
 HU0728.adjusted by the NATIONAL GEODETIC SURVEY
 HU0728.in June 1991.
 HU0728
 HU0728.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0728.GEOID18 height accuracy estimate available here.
 HU0728
 HU0728.Click photographs - Photos may exist for this station.
 HU0728
 HU0728.The dynamic height is computed by dividing the NAVD 88
 HU0728.geopotential number by the normal gravity value computed on the
 HU0728.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0728.degrees latitude (g = 980.6199 gals.).
 HU0728
 HU0728.The modeled gravity was interpolated from observed gravity values.
 HU0728
 HU0728;                    North         East    Units  Estimated Accuracy
 HU0728;SPC MD       -    58,232.      530,700.      MT  (+/- 10 meters HH2 GPS)
 HU0728
 HU0728_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5548926090(NAD 83)
 HU0728
 HU0728                          SUPERSEDED SURVEY CONTROL
 HU0728
 HU0728  NGVD 29 (11/26/84)   11.187  (m)           36.70   (f) ADJUSTED    2 0
 HU0728
 HU0728.Superseded values are not recommended for survey control.
 HU0728
 HU0728.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0728.See file dsdata.pdf to determine how the superseded data were derived.
 HU0728
 HU0728_MARKER: DD = SURVEY DISK
 HU0728_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0728_STAMPING: US 479 W 1942
 HU0728_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0728+STABILITY: SURFACE MOTION
 HU0728_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0728+SATELLITE: SATELLITE OBSERVATIONS - October 08, 2006
 HU0728
 HU0728  HISTORY     - Date     Condition        Report By
 HU0728  HISTORY     - 1942     MONUMENTED       DOD
 HU0728  HISTORY     - 1962     GOOD             CGS
 HU0728  HISTORY     - 20061008 GOOD             USPSQD
 HU0728
 HU0728                          STATION DESCRIPTION
 HU0728
 HU0728'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0728'7.5 MI W FROM SNOW HILL.
 HU0728'2.8 MILES NORTHWEST ALONG STATE HIGHWAY 12 FROM THE DRAWBRIDGE
 HU0728'OVER POCOMOKE RIVER AT SNOW HILL, WORCESTER COUNTY, THENCE ABOUT
 HU0728'4.7 MILES WEST ALONG A DIRT ROAD, ACROSS THE ROAD FROM THE
 HU0728'NORTHEAST CORNER OF A CULTIVATED FIELD, AND 14 FEET NORTH OF THE
 HU0728'CENTER LINE OF THE ROAD.  A CORPS OF ENGINEERS, U.S. ARMY,
 HU0728'STANDARD DISK, STAMPED U.S. 492 W 1942 AND SET IN THE TOP OF A
 HU0728'CONCRETE POST PROJECTING ABOUT 2.5 FEET ABOVE GROUND.  NOTE-- THE
 HU0728'CORRECT DESIGNATION OF THIS BENCH MARK MAY BE W 479 (U.S.E.).
 HU0728'MARK WAS LISTED AS 492 W AND IT IS NOT ACROSS THE ROAD FROM A
 HU0728'CULTIVATED FIELD.  MARK IS 14 FEET NORTH OF THE CENTERLINE OF A
 HU0728'BLACKTOP ROAD AND 7 FEET NORTH OF A STATE OF MARYLAND PUBLIC
 HU0728'HUNTING GROUND BOUNDARY MARKER.
 HU0728
 HU0728                          STATION RECOVERY (2006)
 HU0728
 HU0728'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU0728'TAKE SAND ROAD OFF RED HOUSE ROAD OFF ROUTE 12. MARK IS BEYOND FOREST
 HU0728'ROAD.  THE CONCRETE POST FOR MARK HAS BEEN PAINTED YELLOW. IT PROJECTS
 HU0728'ABOUT 1 FOOT ABOVE THE GROUND.  IT IS 2.5 FEET ABOVE THE ROAD, 20 FEET
 HU0728'FROM CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8508 ***********************************************************************
 AI8508  DESIGNATION -  47GA
 AI8508  PID         -  AI8508
 AI8508  STATE/COUNTY-  MD/HOWARD
 AI8508  COUNTRY     -  US
 AI8508  USGS QUAD   -  SAVAGE (2016)
 AI8508
 AI8508                         *CURRENT SURVEY CONTROL
 AI8508  ______________________________________________________________________
 AI8508* NAD 83(2011) POSITION- 39 07 42.49612(N) 076 51 41.34510(W)   ADJUSTED
 AI8508* NAD 83(2011) ELLIP HT-    74.387 (meters)        (06/27/12)   ADJUSTED
 AI8508* NAD 83(2011) EPOCH   -  2010.00
 AI8508* NAVD 88 ORTHO HEIGHT -   106.6   (meters)      350.    (feet) GPS OBS
 AI8508  ______________________________________________________________________
 AI8508  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8508  GEOID HEIGHT    -        -32.184 (meters)                     GEOID99
 AI8508  GEOID HEIGHT    -        -32.201 (meters)                     GEOID18
 AI8508  NAD 83(2011) X  -  1,126,164.062 (meters)                     COMP
 AI8508  NAD 83(2011) Y  - -4,824,707.651 (meters)                     COMP
 AI8508  NAD 83(2011) Z  -  4,003,437.894 (meters)                     COMP
 AI8508  LAPLACE CORR    -         -4.22  (seconds)                    DEFLEC18
 AI8508
 AI8508  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8508  Standards:
 AI8508         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8508            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8508  -------------------------------------------------------------------
 AI8508  NETWORK    0.90   1.16           0.40   0.33   0.59     -0.07678209
 AI8508  -------------------------------------------------------------------
 AI8508  Click here for local accuracies and other accuracy information.
 AI8508
 AI8508.The horizontal coordinates were established by GPS observations
 AI8508.and adjusted by the National Geodetic Survey in June 2012.
 AI8508
 AI8508.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8508.been affixed to the stable North American tectonic plate. See 
 AI8508.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8508
 AI8508.The horizontal coordinates are valid at the epoch date displayed above
 AI8508.which is a decimal equivalence of Year/Month/Day.
 AI8508
 AI8508.The orthometric height was determined by GPS observations and a
 AI8508.high-resolution geoid model.
 AI8508
 AI8508.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8508.GEOID18 height accuracy estimate available here.
 AI8508
 AI8508.Click photographs - Photos may exist for this station.
 AI8508
 AI8508.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8508
 AI8508.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8508
 AI8508.The ellipsoidal height was determined by GPS observations
 AI8508.and is referenced to NAD 83.
 AI8508
 AI8508. The following values were computed from the NAD 83(2011) position.
 AI8508
 AI8508;                    North         East     Units Scale Factor Converg.
 AI8508;SPC MD       -   162,277.103   411,976.860   MT  0.99995954   +0 05 13.0
 AI8508;SPC MD       -   532,404.13  1,351,627.41   sFT  0.99995954   +0 05 13.0
 AI8508;UTM  18      - 4,332,683.108   339,096.842   MT  0.99991879   -1 10 29.9
 AI8508
 AI8508!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8508!SPC MD       -   0.99998833  x   0.99995954  =   0.99994787
 AI8508!UTM  18      -   0.99998833  x   0.99991879  =   0.99990712
 AI8508
 AI8508_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3909632683(NAD 83)
 AI8508
 AI8508                          SUPERSEDED SURVEY CONTROL
 AI8508
 AI8508  NAD 83(2007)-  39 07 42.49641(N)    076 51 41.34611(W) AD(2002.00) 0
 AI8508  ELLIP H (02/10/07)   74.412  (m)                       GP(2002.00)    
 AI8508  ELLIP H (08/30/02)   74.403  (m)                       GP(       ) 4 2
 AI8508  NAD 83(1991)-  39 07 42.49667(N)    076 51 41.34566(W) AD(       ) 1
 AI8508  ELLIP H (11/16/00)   74.341  (m)                       GP(       ) 4 1
 AI8508
 AI8508.Superseded values are not recommended for survey control.
 AI8508
 AI8508.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8508.See file dsdata.pdf to determine how the superseded data were derived.
 AI8508
 AI8508_MARKER: DD = SURVEY DISK
 AI8508_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8508_STAMPING: 47GA
 AI8508_MARK LOGO: MD-027
 AI8508_PROJECTION: FLUSH
 AI8508_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8508_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8508+STABILITY: SURFACE MOTION
 AI8508_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8508+SATELLITE: SATELLITE OBSERVATIONS - November 17, 2009
 AI8508
 AI8508  HISTORY     - Date     Condition        Report By
 AI8508  HISTORY     - 1993     MONUMENTED       MD-027
 AI8508  HISTORY     - 20000915 GOOD             MD-027
 AI8508  HISTORY     - 20060414 GOOD             GPSSS
 AI8508  HISTORY     - 20091117 GOOD             NGS
 AI8508
 AI8508                          STATION DESCRIPTION
 AI8508
 AI8508'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8508'DESCRIPTION BY HOWARD COUNTY 2000   THE STATION IS IN THE LOCALITY
 AI8508'OF SAVAGE AT THE INTERSECTION OF  MARYLAND ROUTE 216 AND
 AI8508'INTERSTATE ROUTE I 95.   THE MARK IS ON THE MEDIAN OF ROUTE 216 ,
 AI8508'CLOSER TO THE EASTBOUND  LANE, IT IS  195 FEET EAST OF THE EAST
 AI8508'ABUTMENT OF THE BRIDGE  OVER I  95 , 8 FEET NORTH  OF THE EDGE OF
 AI8508'PAVEMENT OF THE EASTBOUND LANE  OF ROUTE 216 AND ABOUT 150 FEET
 AI8508'WEST OF THE CENTERLINE  AT THE  START OF THE RAMP FROM ROUTE 216
 AI8508'EAST TO  I 95 NORTH.   THE MARK IS A STANDARD HOWARD COUNTY
 AI8508'SURVEY DISC SET ON  CONCRETE BASE, FLUSH WITH THE GROUND
 AI8508'
 AI8508
 AI8508                          STATION RECOVERY (2006)
 AI8508
 AI8508'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (BD)
 AI8508'RECOVERED BY BRIAN DIETZ, PLS
 AI8508
 AI8508                          STATION RECOVERY (2009)
 AI8508
 AI8508'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 AI8508'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0896 ***********************************************************************
 HU0896  DESIGNATION -  48
 HU0896  PID         -  HU0896
 HU0896  STATE/COUNTY-  MD/CAROLINE
 HU0896  COUNTRY     -  US
 HU0896  USGS QUAD   -  FOWLING CREEK (2017)
 HU0896
 HU0896                         *CURRENT SURVEY CONTROL
 HU0896  ______________________________________________________________________
 HU0896* NAD 83(1986) POSITION- 38 46 46.     (N) 075 52 49.     (W)   SCALED
 HU0896* NAVD 88 ORTHO HEIGHT -    14.517 (meters)       47.63  (feet) ADJUSTED
 HU0896  ______________________________________________________________________
 HU0896  GEOID HEIGHT    -        -34.993 (meters)                     GEOID18
 HU0896  DYNAMIC HEIGHT  -         14.508 (meters)       47.60  (feet) COMP
 HU0896  MODELED GRAVITY -    980,031.9   (mgal)                       NAVD 88
 HU0896
 HU0896  VERT ORDER      -  SECOND    CLASS 0
 HU0896
 HU0896.The horizontal coordinates were scaled from a map and have
 HU0896.an estimated accuracy of +/- 6 seconds.
 HU0896
 HU0896.The orthometric height was determined by differential leveling and
 HU0896.adjusted by the NATIONAL GEODETIC SURVEY
 HU0896.in June 1991.
 HU0896
 HU0896.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0896.GEOID18 height accuracy estimate available here.
 HU0896
 HU0896.Click photographs - Photos may exist for this station.
 HU0896
 HU0896.The dynamic height is computed by dividing the NAVD 88
 HU0896.geopotential number by the normal gravity value computed on the
 HU0896.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0896.degrees latitude (g = 980.6199 gals.).
 HU0896
 HU0896.The modeled gravity was interpolated from observed gravity values.
 HU0896
 HU0896;                    North         East    Units  Estimated Accuracy
 HU0896;SPC MD       -   124,120.      497,290.      MT  (+/- 180 meters Scaled)
 HU0896
 HU0896_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH235926(NAD 83)
 HU0896
 HU0896                          SUPERSEDED SURVEY CONTROL
 HU0896
 HU0896  NGVD 29 (11/26/84)   14.757  (m)           48.42   (f) ADJUSTED    2 0
 HU0896
 HU0896.Superseded values are not recommended for survey control.
 HU0896
 HU0896.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0896.See file dsdata.pdf to determine how the superseded data were derived.
 HU0896
 HU0896_MARKER: Z = SEE DESCRIPTION
 HU0896_SETTING: 0 = UNSPECIFIED SETTING
 HU0896_STAMPING: USGS 48 ADJ 190
 HU0896_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0896
 HU0896  HISTORY     - Date     Condition        Report By
 HU0896  HISTORY     - UNK      MONUMENTED       USGS
 HU0896  HISTORY     - 1942     GOOD             CGS
 HU0896  HISTORY     - 1965     GOOD             CGS
 HU0896
 HU0896                          STATION DESCRIPTION
 HU0896
 HU0896'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0896'AT HARMONY.
 HU0896'AT HARMONY, CAROLINE COUNTY, AT THE WYE JUNCTION OF HIGHWAY 16
 HU0896'AND 578, 21.3 FEET NORTH OF THE CENTER LINE OF HIGHWAY 578, 95.0
 HU0896'FEET WEST OF THE CENTER LINE OF THE JUNCTION, 3.9 FEET NORTHEAST
 HU0896'OF POLE NUMBER 2A-258A, 11.9 FEET SOUTHEAST OF THE SOUTHEAST CORNER
 HU0896'OF HARRY ARRINGDALE HOME, ABOUT 0.6 INCHES HIGHER THAN HIGHWAY
 HU0896'578, A U.S.G.S. CAP SET IN THE TOP OF A IRON POST.  NOTE-- A
 HU0896'TREE ROOT HAS GROWN AROUND MARK AND MARK IS LEANING ABOUT 30
 HU0896'DEGREES.
 HU0896
 HU0896                          STATION RECOVERY (1965)
 HU0896
 HU0896'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0896'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1202 ***********************************************************************
 JW1202  DESIGNATION -  48 1
 JW1202  PID         -  JW1202
 JW1202  STATE/COUNTY-  MD/WASHINGTON
 JW1202  COUNTRY     -  US
 JW1202  USGS QUAD   -  BELLEGROVE (2016)
 JW1202
 JW1202                         *CURRENT SURVEY CONTROL
 JW1202  ______________________________________________________________________
 JW1202* NAD 83(1986) POSITION- 39 42 25.3    (N) 078 16 36.4    (W)   HD_HELD2
 JW1202* NAVD 88 ORTHO HEIGHT -   300.866 (meters)      987.09  (feet) ADJUSTED
 JW1202  ______________________________________________________________________
 JW1202  GEOID HEIGHT    -        -33.788 (meters)                     GEOID18
 JW1202  DYNAMIC HEIGHT  -        300.687 (meters)      986.50  (feet) COMP
 JW1202  MODELED GRAVITY -    980,023.7   (mgal)                       NAVD 88
 JW1202
 JW1202  VERT ORDER      -  FIRST     CLASS II
 JW1202
 JW1202.The horizontal coordinates were established by autonomous hand held GPS
 JW1202.observations and have an estimated accuracy of +/- 10 meters.
 JW1202
 JW1202.The orthometric height was determined by differential leveling and
 JW1202.adjusted by the NATIONAL GEODETIC SURVEY
 JW1202.in June 1991.
 JW1202
 JW1202.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1202.GEOID18 height accuracy estimate available here.
 JW1202
 JW1202.Click photographs - Photos may exist for this station.
 JW1202
 JW1202.The dynamic height is computed by dividing the NAVD 88
 JW1202.geopotential number by the normal gravity value computed on the
 JW1202.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1202.degrees latitude (g = 980.6199 gals.).
 JW1202
 JW1202.The modeled gravity was interpolated from observed gravity values.
 JW1202
 JW1202;                    North         East    Units  Estimated Accuracy
 JW1202;SPC MD       -   227,267.      290,504.      MT  (+/- 10 meters HH2 GPS)
 JW1202
 JW1202_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD3346098786(NAD 83)
 JW1202
 JW1202                          SUPERSEDED SURVEY CONTROL
 JW1202
 JW1202.No superseded survey control is available for this station.
 JW1202
 JW1202_MARKER: DB = BENCH MARK DISK
 JW1202_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1202_STAMPING: 48-1 1980
 JW1202_MARK LOGO: MDSHA
 JW1202_PROJECTION: FLUSH
 JW1202_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1202+STABILITY: SURFACE MOTION
 JW1202_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1202+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2023
 JW1202
 JW1202  HISTORY     - Date     Condition        Report By
 JW1202  HISTORY     - 1980     MONUMENTED       MDSRC
 JW1202  HISTORY     - 1983     GOOD             NGS
 JW1202  HISTORY     - 20230208 GOOD             BASE9
 JW1202
 JW1202                          STATION DESCRIPTION
 JW1202
 JW1202'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1202'9.0 KM (5.6 MI) WEST FROM HANCOCK.
 JW1202'5.6 KM (3.5 MI) WEST ALONG STATE HIGHWAY 144 FROM THE U.S. HIGHWAY 522
 JW1202'OVERPASS BRIDGE IN HANCOCK, THENCE 3.4 KM (2.1 MI) WEST ALONG U.S.
 JW1202'HIGHWAY 40 TO THE MARK ON THE LEFT, AT THE SOUTHWEST ANGLE OF THE
 JW1202'INTERSECTION OF RICE ROAD, 16.50 METERS (54.0 FT) SOUTH OF THE
 JW1202'CENTERLNE OF THE EASTBOUND LANE OF THE HIGHWAY, 9.0 METERS (29.5 FT)
 JW1202'WEST OF THE CENTER OF RICE ROAD, 2.90 METERS (9.5 FT) NORTH-NORTHWEST
 JW1202'OF A POWER POLE WITH TWO TRANSFORMERS.
 JW1202'THE MARK IS 0.30 METERS  W FROM A WITNESS POST.
 JW1202'THE MARK IS 0.61 M ABOVE HIGHWAY.
 JW1202
 JW1202                          STATION RECOVERY (2023)
 JW1202
 JW1202'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2023 (DRD)
 JW1202'WITNESS POSTED NOTED IN 1983 DESCRIPTION HAS BEEN REMOVED.  WITNESS
 JW1202'PLAQUE HAS BEEN NAILED TO THE NORTH SIDE OF THE UTILITY POLE WHICH IS
 JW1202'NOW TAGGED AS PE SYSTEM H33110.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1451 ***********************************************************************
 JV1451  DESIGNATION -  482
 JV1451  PID         -  JV1451
 JV1451  STATE/COUNTY-  MD/MONTGOMERY
 JV1451  COUNTRY     -  US
 JV1451  USGS QUAD   -  BELTSVILLE (2016)
 JV1451
 JV1451                         *CURRENT SURVEY CONTROL
 JV1451  ______________________________________________________________________
 JV1451* NAD 83(1986) POSITION- 39 06 25.13   (N) 076 56 17.24   (W)   HD_HELD1
 JV1451* NAVD 88 ORTHO HEIGHT -   146.70  (+/-2cm)      481.3   (feet) VERTCON3
 JV1451  ______________________________________________________________________
 JV1451  GEOID HEIGHT    -        -32.058 (meters)                     GEOID18
 JV1451  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1451
 JV1451.The horizontal coordinates were determined by differentially corrected
 JV1451.hand held GPS observations or other comparable positioning techniques
 JV1451.and have an estimated accuracy of +/- 3 meters.
 JV1451
 JV1451.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1451.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1451
 JV1451.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1451.GEOID18 height accuracy estimate available here.
 JV1451
 JV1451.The vertical order pertains to the NGVD 29 superseded value.
 JV1451
 JV1451.Click photographs - Photos may exist for this station.
 JV1451
 JV1451;                    North         East    Units  Estimated Accuracy
 JV1451;SPC MD       -   159,884.1     405,351.9     MT  (+/- 3 meters HH1 GPS) 
 JV1451
 JV1451_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3242130436(NAD 83)
 JV1451
 JV1451                          SUPERSEDED SURVEY CONTROL
 JV1451
 JV1451  NGVD 29 (11/26/84)  146.909  (m)          481.98   (f) ADJUSTED    2 0
 JV1451
 JV1451.Superseded values are not recommended for survey control.
 JV1451
 JV1451.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1451.See file dsdata.pdf to determine how the superseded data were derived.
 JV1451
 JV1451_MARKER: DB = BENCH MARK DISK
 JV1451_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1451_SP_SET: BUILDING
 JV1451_STAMPING: 482
 JV1451_MARK LOGO: USGS
 JV1451_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1451_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1451+SATELLITE: SATELLITE OBSERVATIONS - November 10, 2006
 JV1451
 JV1451  HISTORY     - Date     Condition        Report By
 JV1451  HISTORY     - 1906     MONUMENTED       USGS
 JV1451  HISTORY     - 1939     GOOD             WSSC
 JV1451  HISTORY     - 20061110 GOOD             NGS
 JV1451
 JV1451                          STATION DESCRIPTION
 JV1451
 JV1451'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1451'AT BURTONSVILLE.
 JV1451'AT LIBERTY GROVE CHURCH, AND IN THE NORTHWEST CORNER OF THE
 JV1451'CHURCH.
 JV1451
 JV1451                          STATION RECOVERY (2006)
 JV1451
 JV1451'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV1451'BUILDING IS NO LONGER A CHURCH.  IT IS NOW THE BURTONSVILLE OFFICE
 JV1451'BUILDING AT 3537 SPENCERVILLE ROAD.  THE MARK IS LOCATED .2 METER EAST
 JV1451'OF THE NW CORNER OF THE BUILDING AND .5 M ABOVE GROUND LEVEL.  MARK
 JV1451'HAS BEEN PAINTED OVER AND THE STAMPING IS DIFFICULT TO READ.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2669 ***********************************************************************
 JV2669  DESIGNATION -  484
 JV2669  PID         -  JV2669
 JV2669  STATE/COUNTY-  MD/MONTGOMERY
 JV2669  COUNTRY     -  US
 JV2669  USGS QUAD   -  SANDY SPRING (2016)
 JV2669
 JV2669                         *CURRENT SURVEY CONTROL
 JV2669  ______________________________________________________________________
 JV2669* NAD 83(1986) POSITION- 39 08 58.04   (N) 077 01 36.53   (W)   HD_HELD1
 JV2669* NAVD 88 ORTHO HEIGHT -   147.28  (+/-2cm)      483.2   (feet) VERTCON3
 JV2669  ______________________________________________________________________
 JV2669  GEOID HEIGHT    -        -31.891 (meters)                     GEOID18
 JV2669  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2669
 JV2669.The horizontal coordinates were determined by differentially corrected
 JV2669.hand held GPS observations or other comparable positioning techniques
 JV2669.and have an estimated accuracy of +/- 3 meters.
 JV2669
 JV2669.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2669.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2669
 JV2669.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2669.GEOID18 height accuracy estimate available here.
 JV2669
 JV2669.The vertical order pertains to the NGVD 29 superseded value.
 JV2669
 JV2669.Click photographs - Photos may exist for this station.
 JV2669
 JV2669;                    North         East    Units  Estimated Accuracy
 JV2669;SPC MD       -   164,597.9     397,682.2     MT  (+/- 3 meters HH1 GPS) 
 JV2669
 JV2669_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2485635318(NAD 83)
 JV2669
 JV2669                          SUPERSEDED SURVEY CONTROL
 JV2669
 JV2669  NGVD 29 (11/26/84)  147.485  (m)          483.87   (f) ADJUSTED    2 0
 JV2669
 JV2669.Superseded values are not recommended for survey control.
 JV2669
 JV2669.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2669.See file dsdata.pdf to determine how the superseded data were derived.
 JV2669
 JV2669_MARKER: DB = BENCH MARK DISK
 JV2669_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV2669_SP_SET: STEP
 JV2669_STAMPING: 484
 JV2669_MARK LOGO: USGS
 JV2669_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2669_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2669_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2669+SATELLITE: SATELLITE OBSERVATIONS - October 26, 2001
 JV2669
 JV2669  HISTORY     - Date     Condition        Report By
 JV2669  HISTORY     - 1904     MONUMENTED       USGS
 JV2669  HISTORY     - 1944     GOOD             WSSC
 JV2669  HISTORY     - 1985     GOOD             USPSQD
 JV2669  HISTORY     - 19900117 GOOD             WSSC
 JV2669  HISTORY     - 20010828 GOOD             MDSHA
 JV2669  HISTORY     - 20011026 GOOD             USPSQD
 JV2669
 JV2669                          STATION DESCRIPTION
 JV2669
 JV2669'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2669'AT SANDY SPRING.
 JV2669'ON STATE HIGHWAY 108, ON THE SOUTH SIDE OF THE HIGHWAY, AT
 JV2669'THE MUTUAL FIRE INSURANCE CO. BUILDING, AT THE FRONT OF THE
 JV2669'BUILDING, AND IN THE EAST END OF THE STEP.
 JV2669
 JV2669                          STATION RECOVERY (1985)
 JV2669
 JV2669'RECOVERY NOTE BY US POWER SQUADRON 1985
 JV2669'THE MARK IS ON STATE HIGHWAY 108, ON THE SOUTH SIDE OF THE
 JV2669'HIGHWAY, AT THE INTERSECTION OF MEETING HOUSE ROAD.  IT IS ON THE
 JV2669'SANDY SPRING NATIONAL BANK ADMINISTRATIVE OFFICES BUILDING (GRANITE
 JV2669'DOOR LINTEL READS MUTUAL FIRE INSURANCE COMPANY) AT THE FRONT OF THE
 JV2669'BUILDING, AND IN THE EAST END OF THE STEP.
 JV2669
 JV2669                          STATION RECOVERY (1990)
 JV2669
 JV2669'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV2669'RECOVERED IN GOOD CONDITION.
 JV2669
 JV2669                          STATION RECOVERY (2001)
 JV2669
 JV2669'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2669'RECOVERED AS DESCRIBED.
 JV2669
 JV2669                          STATION RECOVERY (2001)
 JV2669
 JV2669'RECOVERY NOTE BY US POWER SQUADRON 2001 (BAS)
 JV2669'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1374 ***********************************************************************
 JV1374  DESIGNATION -  487
 JV1374  PID         -  JV1374
 JV1374  STATE/COUNTY-  MD/HOWARD
 JV1374  COUNTRY     -  US
 JV1374  USGS QUAD   -  CLARKSVILLE (2016)
 JV1374
 JV1374                         *CURRENT SURVEY CONTROL
 JV1374  ______________________________________________________________________
 JV1374* NAD 83(1986) POSITION- 39 12 22.     (N) 076 56 35.     (W)   SCALED
 JV1374* NAVD 88 ORTHO HEIGHT -   148.142 (meters)      486.03  (feet) ADJUSTED
 JV1374  ______________________________________________________________________
 JV1374  GEOID HEIGHT    -        -32.024 (meters)                     GEOID18
 JV1374  DYNAMIC HEIGHT  -        148.063 (meters)      485.77  (feet) COMP
 JV1374  MODELED GRAVITY -    980,087.2   (mgal)                       NAVD 88
 JV1374
 JV1374  VERT ORDER      -  SECOND    CLASS I
 JV1374
 JV1374.The horizontal coordinates were scaled from a map and have
 JV1374.an estimated accuracy of +/- 6 seconds.
 JV1374
 JV1374.The orthometric height was determined by differential leveling and
 JV1374.adjusted by the NATIONAL GEODETIC SURVEY
 JV1374.in March 2010.
 JV1374
 JV1374.No vertical observational check was made to the station.
 JV1374
 JV1374.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1374.GEOID18 height accuracy estimate available here.
 JV1374
 JV1374.Click photographs - Photos may exist for this station.
 JV1374
 JV1374.The dynamic height is computed by dividing the NAVD 88
 JV1374.geopotential number by the normal gravity value computed on the
 JV1374.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1374.degrees latitude (g = 980.6199 gals.).
 JV1374
 JV1374.The modeled gravity was interpolated from observed gravity values.
 JV1374
 JV1374;                    North         East    Units  Estimated Accuracy
 JV1374;SPC MD       -   170,890.      404,920.      MT  (+/- 180 meters Scaled)
 JV1374
 JV1374_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ322414(NAD 83)
 JV1374
 JV1374                          SUPERSEDED SURVEY CONTROL
 JV1374
 JV1374  NAVD 88 (??/??/92)  148.146  (m)          486.04   (f) SUPERSEDED  3 0
 JV1374  NGVD 29 (11/26/84)  148.364  (m)          486.76   (f) ADJUSTED    2 0
 JV1374
 JV1374.Superseded values are not recommended for survey control.
 JV1374
 JV1374.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1374.See file dsdata.pdf to determine how the superseded data were derived.
 JV1374
 JV1374_MARKER: DB = BENCH MARK DISK
 JV1374_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1374_SP_SET: BUILDING
 JV1374_STAMPING: 487 1901
 JV1374_MARK LOGO: USGS
 JV1374_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1374
 JV1374  HISTORY     - Date     Condition        Report By
 JV1374  HISTORY     - 1901     MONUMENTED       USGS
 JV1374  HISTORY     - 1942     GOOD             CGS
 JV1374  HISTORY     - 1965     GOOD             CGS
 JV1374  HISTORY     - 19990114 MARK NOT FOUND   MDSHA
 JV1374
 JV1374                          STATION DESCRIPTION
 JV1374
 JV1374'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1374'AT CLARKSVILLE.
 JV1374'AT CLARKSVILLE, HOWARD COUNTY, ON OLD U.S. HIGHWAY 29, AT THE
 JV1374'GENERAL STORE AND POST OFFICE, AT THE NORTHEAST CORNER OF THE
 JV1374'STONE BUILDING, IN THE NORTH WALL, 1 FOOT WEST OF THE CORNER, AND
 JV1374'2 FEET ABOVE THE GROUND.  A UNITED STATES GEOLOGICAL SURVEY
 JV1374'STANDARD DISK, STAMPED 487 1901 AND SET VERTICALLY.
 JV1374
 JV1374                          STATION RECOVERY (1965)
 JV1374
 JV1374'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 JV1374'RECOVERED IN GOOD CONDITION.
 JV1374
 JV1374                          STATION RECOVERY (1999)
 JV1374
 JV1374'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV1374'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE EMPLOYEES AT THE
 JV1374'NEW POST OFFICE IN CLARKSVILLE STATED THAT THE OLD POST OFFICE HAS
 JV1374'BEEN TORN DOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6392 ***********************************************************************
 JV6392  DESIGNATION -  4881
 JV6392  PID         -  JV6392
 JV6392  STATE/COUNTY-  MD/MONTGOMERY
 JV6392  COUNTRY     -  US
 JV6392  USGS QUAD   -  GAITHERSBURG (2016)
 JV6392
 JV6392                         *CURRENT SURVEY CONTROL
 JV6392  ______________________________________________________________________
 JV6392* NAD 83(1986) POSITION- 39 08 25.     (N) 077 12 44.     (W)   SCALED
 JV6392* NAVD 88 ORTHO HEIGHT -   131.172 (meters)      430.35  (feet) ADJUSTED
 JV6392  ______________________________________________________________________
 JV6392  GEOID HEIGHT    -        -31.744 (meters)                     GEOID18
 JV6392  DYNAMIC HEIGHT  -        131.103 (meters)      430.13  (feet) COMP
 JV6392  MODELED GRAVITY -    980,100.6   (mgal)                       NAVD 88
 JV6392
 JV6392  VERT ORDER      -  FIRST     CLASS II
 JV6392
 JV6392.The horizontal coordinates were scaled from a map and have
 JV6392.an estimated accuracy of +/- 6 seconds.
 JV6392
 JV6392.The orthometric height was determined by differential leveling and
 JV6392.adjusted by the NATIONAL GEODETIC SURVEY
 JV6392.in July 1994.
 JV6392
 JV6392.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6392.GEOID18 height accuracy estimate available here.
 JV6392
 JV6392.Click photographs - Photos may exist for this station.
 JV6392
 JV6392.The dynamic height is computed by dividing the NAVD 88
 JV6392.geopotential number by the normal gravity value computed on the
 JV6392.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6392.degrees latitude (g = 980.6199 gals.).
 JV6392
 JV6392.The modeled gravity was interpolated from observed gravity values.
 JV6392
 JV6392;                    North         East    Units  Estimated Accuracy
 JV6392;SPC MD       -   163,600.      381,650.      MT  (+/- 180 meters Scaled)
 JV6392
 JV6392_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ088346(NAD 83)
 JV6392
 JV6392                          SUPERSEDED SURVEY CONTROL
 JV6392
 JV6392.No superseded survey control is available for this station.
 JV6392
 JV6392_MARKER: R = RIVET
 JV6392_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6392_SP_SET: RETAINING WALL
 JV6392_STAMPING: B.M. NO. 4881 WSSC
 JV6392_MARK LOGO: NONE
 JV6392_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6392_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6392+STABILITY: SURFACE MOTION
 JV6392_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6392+SATELLITE: SATELLITE OBSERVATIONS - November 01, 1989
 JV6392
 JV6392  HISTORY     - Date     Condition        Report By
 JV6392  HISTORY     - 1989     MONUMENTED       WSSC
 JV6392  HISTORY     - 19891101 GOOD             NGS
 JV6392
 JV6392                          STATION DESCRIPTION
 JV6392
 JV6392'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6392'IN GAITHERSBURG, AT THE NORTHEAST END AND BELOW INTERSTATE 270 NORTH
 JV6392'BOUND LANES, SET IN THE EAST SIDE OF A RETAINING WALL SUPPORTING
 JV6392'CONCRETE PILLARS THAT PARALLEL STATE HIGHWAY 117 (CLOPPER ROAD), A
 JV6392'RIVET WITH A WASHER, 0.9 M (2.95 FT) ABOVE THE HIGHWAY, 5.3 M (17.39
 JV6392'FT) NORTHEAST OF THE CENTERLINE OF THE WEST BOUND LANES OF THE
 JV6392'HIGHWAY, 1.3 M (4.27 FT) SOUTH OF THE SOUTH EDGE OF SOUTH EDGE OF THE
 JV6392'EAST ONE OF A ROW OF CONCRETE PILLARS FOR THE INTERSTATE, 1.6 M (5.25
 JV6392'FT) WEST OF THE EAST EDGE OF THE RETAINING WALL, AND 1.0 M (3.28 FT)
 JV6392'SOUTH OF A BLACK JUNCTION BOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8517 ***********************************************************************
 AI8517  DESIGNATION -  48GB
 AI8517  PID         -  AI8517
 AI8517  STATE/COUNTY-  MD/HOWARD
 AI8517  COUNTRY     -  US
 AI8517  USGS QUAD   -  SAVAGE (2016)
 AI8517
 AI8517                         *CURRENT SURVEY CONTROL
 AI8517  ______________________________________________________________________
 AI8517* NAD 83(2011) POSITION- 39 07 43.38856(N) 076 47 40.27094(W)   ADJUSTED
 AI8517* NAD 83(2011) ELLIP HT-    37.072 (meters)        (06/27/12)   ADJUSTED
 AI8517* NAD 83(2011) EPOCH   -  2010.00
 AI8517* NAVD 88 ORTHO HEIGHT -    69.5   (meters)      228.    (feet) GPS OBS
 AI8517  ______________________________________________________________________
 AI8517  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8517  GEOID HEIGHT    -        -32.360 (meters)                     GEOID99
 AI8517  GEOID HEIGHT    -        -32.375 (meters)                     GEOID18
 AI8517  NAD 83(2011) X  -  1,131,791.639 (meters)                     COMP
 AI8517  NAD 83(2011) Y  - -4,823,343.050 (meters)                     COMP
 AI8517  NAD 83(2011) Z  -  4,003,435.695 (meters)                     COMP
 AI8517  LAPLACE CORR    -         -5.56  (seconds)                    DEFLEC18
 AI8517
 AI8517  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8517  Standards:
 AI8517         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8517            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8517  -------------------------------------------------------------------
 AI8517  NETWORK    1.11   1.31           0.49   0.41   0.67     -0.06038167
 AI8517  -------------------------------------------------------------------
 AI8517  Click here for local accuracies and other accuracy information.
 AI8517
 AI8517.The horizontal coordinates were established by GPS observations
 AI8517.and adjusted by the National Geodetic Survey in June 2012.
 AI8517
 AI8517.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8517.been affixed to the stable North American tectonic plate. See 
 AI8517.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8517
 AI8517.The horizontal coordinates are valid at the epoch date displayed above
 AI8517.which is a decimal equivalence of Year/Month/Day.
 AI8517
 AI8517.The orthometric height was determined by GPS observations and a
 AI8517.high-resolution geoid model.
 AI8517
 AI8517.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8517.GEOID18 height accuracy estimate available here.
 AI8517
 AI8517.Click photographs - Photos may exist for this station.
 AI8517
 AI8517.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8517
 AI8517.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8517
 AI8517.The ellipsoidal height was determined by GPS observations
 AI8517.and is referenced to NAD 83.
 AI8517
 AI8517. The following values were computed from the NAD 83(2011) position.
 AI8517
 AI8517;                    North         East     Units Scale Factor Converg.
 AI8517;SPC MD       -   162,315.532   417,766.989   MT  0.99995956   +0 07 44.3
 AI8517;SPC MD       -   532,530.21  1,370,623.86   sFT  0.99995956   +0 07 44.3
 AI8517;UTM  18      - 4,332,594.033   344,886.112   MT  0.99989626   -1 07 57.7
 AI8517
 AI8517!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8517!SPC MD       -   0.99999418  x   0.99995956  =   0.99995374
 AI8517!UTM  18      -   0.99999418  x   0.99989626  =   0.99989044
 AI8517
 AI8517_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4488632594(NAD 83)
 AI8517
 AI8517                          SUPERSEDED SURVEY CONTROL
 AI8517
 AI8517  NAD 83(2007)-  39 07 43.38888(N)    076 47 40.27210(W) AD(2002.00) 0
 AI8517  ELLIP H (02/10/07)   37.096  (m)                       GP(2002.00)    
 AI8517  ELLIP H (08/30/02)   37.086  (m)                       GP(       ) 4 2
 AI8517  NAD 83(1991)-  39 07 43.38895(N)    076 47 40.27178(W) AD(       ) 1
 AI8517  ELLIP H (11/16/00)   37.029  (m)                       GP(       ) 4 1
 AI8517
 AI8517.Superseded values are not recommended for survey control.
 AI8517
 AI8517.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8517.See file dsdata.pdf to determine how the superseded data were derived.
 AI8517
 AI8517_MARKER: DD = SURVEY DISK
 AI8517_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8517_STAMPING: 48GB 10/08
 AI8517_MARK LOGO: MD-027
 AI8517_PROJECTION: FLUSH
 AI8517_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8517_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8517+STABILITY: SURFACE MOTION
 AI8517_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8517+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8517
 AI8517  HISTORY     - Date     Condition        Report By
 AI8517  HISTORY     - 1997     MONUMENTED       MD-027
 AI8517  HISTORY     - 20000915 GOOD             MD-027
 AI8517
 AI8517                          STATION DESCRIPTION
 AI8517
 AI8517'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8517'DESCRIPTION BY HOWARD COUNTY 2000.  THE STATION IS LOCATED BETEEN
 AI8517'SAVAGE AND ANNAPOLIS JUNCTION. AT THE END OF THE EXIT RAM FROM
 AI8517'STATE HIGHWAY 32  WESTBOUND TO DORSEY RUN  ROAD.  TO REACH THE
 AI8517'STATION FROM  THE INTERSECTION  OF BALTIMORE  WASHINGTON
 AI8517'PARKWAY AND STATE HIGHWAY 32 IN  ANNE ARUNDEL COUNTY, G0 WEST
 AI8517'1.2 MILES ALONG ROUTE 32 WEST TO NEXT EXIT RAMP (DORSEY RUN ROAD).
 AI8517'EXIT AND GO ABOUT 1000 FEET TO THE MARK ALMOST AT THE END OF THE
 AI8517'RAMP.  THE STATION IS 14.4 FEET SOUTH OF THE SOUTH FACE OF CURB OF
 AI8517'THE RAMP. 17.1 FEET EAST OF A LIGHT POLE BEHIND A METALIC GUARDRAIL,
 AI8517'THE STATION IS BEHIND THE GUARDRAIL AT 4 FEET TO ITS NEAR WEST
 AI8517'GUARDRAIL POST AND 3.7 TO ITS NEAR EAST GUARDRAIL  POST. THE MARK
 AI8517'IS A STANDARD HOWARD COUNTY SURVEY DISC SET ON CONCRETE BASE
 AI8517'AND FLUSH WITH THE GROUND.
 AI8517'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1859 ***********************************************************************
 JV1859  DESIGNATION -  49 PRR
 JV1859  PID         -  JV1859
 JV1859  STATE/COUNTY-  MD/FREDERICK
 JV1859  COUNTRY     -  US
 JV1859  USGS QUAD   -  WOODSBORO (2016)
 JV1859
 JV1859                         *CURRENT SURVEY CONTROL
 JV1859  ______________________________________________________________________
 JV1859* NAD 83(1986) POSITION- 39 34 33.     (N) 077 15 55.     (W)   SCALED
 JV1859* NAVD 88 ORTHO HEIGHT -   147.255 (meters)      483.12  (feet) ADJUSTED
 JV1859  ______________________________________________________________________
 JV1859  GEOID HEIGHT    -        -32.856 (meters)                     GEOID18
 JV1859  DYNAMIC HEIGHT  -        147.175 (meters)      482.86  (feet) COMP
 JV1859  MODELED GRAVITY -    980,086.0   (mgal)                       NAVD 88
 JV1859
 JV1859  VERT ORDER      -  SECOND    CLASS 0
 JV1859
 JV1859.The horizontal coordinates were scaled from a map and have
 JV1859.an estimated accuracy of +/- 6 seconds.
 JV1859
 JV1859.The orthometric height was determined by differential leveling and
 JV1859.adjusted by the NATIONAL GEODETIC SURVEY
 JV1859.in June 1991.
 JV1859
 JV1859.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1859.GEOID18 height accuracy estimate available here.
 JV1859
 JV1859.Click photographs - Photos may exist for this station.
 JV1859
 JV1859.The dynamic height is computed by dividing the NAVD 88
 JV1859.geopotential number by the normal gravity value computed on the
 JV1859.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1859.degrees latitude (g = 980.6199 gals.).
 JV1859
 JV1859.The modeled gravity was interpolated from observed gravity values.
 JV1859
 JV1859;                    North         East    Units  Estimated Accuracy
 JV1859;SPC MD       -   211,970.      377,210.      MT  (+/- 180 meters Scaled)
 JV1859
 JV1859_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ054831(NAD 83)
 JV1859
 JV1859                          SUPERSEDED SURVEY CONTROL
 JV1859
 JV1859  NGVD 29 (11/26/84)  147.453  (m)          483.77   (f) ADJUSTED    2 0
 JV1859
 JV1859.Superseded values are not recommended for survey control.
 JV1859
 JV1859.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1859.See file dsdata.pdf to determine how the superseded data were derived.
 JV1859
 JV1859_MARKER: B = BOLT
 JV1859_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1859_SP_SET: CULVERT
 JV1859_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1859
 JV1859  HISTORY     - Date     Condition        Report By
 JV1859  HISTORY     - UNK      MONUMENTED       PRR
 JV1859  HISTORY     - 1935     GOOD             CGS
 JV1859
 JV1859                          STATION DESCRIPTION
 JV1859
 JV1859'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1859'AT LADIESBURG.
 JV1859'AT LADIESBURG, FREDERICK COUNTY, ABOUT 300 FEET SOUTH OF THE
 JV1859'PENNSYLVANIA RAILROAD STATION, AT THE SOUTH END OF A 4-FOOT
 JV1859'CAST-IRON PIPE CULVERT, IN THE TOP OF THE SOUTHEAST CORNER OF
 JV1859'THE STONE WING WALL, AND 18 FEET EAST OF THE CENTER LINE OF THE
 JV1859'TRACK.  AN IRON BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6690 ***********************************************************************
 JV6690  CBN         -  This is a Cooperative Base Network Control Station.
 JV6690  DESIGNATION -  4978
 JV6690  PID         -  JV6690
 JV6690  STATE/COUNTY-  MD/MONTGOMERY
 JV6690  COUNTRY     -  US
 JV6690  USGS QUAD   -  SANDY SPRING (2016)
 JV6690
 JV6690                         *CURRENT SURVEY CONTROL
 JV6690  ______________________________________________________________________
 JV6690* NAD 83(2011) POSITION- 39 08 58.53558(N) 077 01 30.25427(W)   ADJUSTED
 JV6690* NAD 83(2011) ELLIP HT-   115.511 (meters)        (06/27/12)   ADJUSTED
 JV6690* NAD 83(2011) EPOCH   -  2010.00
 JV6690* NAVD 88 ORTHO HEIGHT -   147.35  (meters)      483.4   (feet) LEVELING
 JV6690  ______________________________________________________________________
 JV6690  GEOID HEIGHT    -        -31.894 (meters)                     GEOID18
 JV6690  NAD 83(2011) X  -  1,112,059.239 (meters)                     COMP
 JV6690  NAD 83(2011) Y  - -4,826,492.025 (meters)                     COMP
 JV6690  NAD 83(2011) Z  -  4,005,282.647 (meters)                     COMP
 JV6690  LAPLACE CORR    -         -3.56  (seconds)                    DEFLEC18
 JV6690  VERT ORDER      -  THIRD ?
 JV6690
 JV6690  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6690  Standards:
 JV6690         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6690            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6690  -------------------------------------------------------------------
 JV6690  NETWORK    0.89   2.10           0.40   0.32   1.07      0.04246154
 JV6690  -------------------------------------------------------------------
 JV6690  Click here for local accuracies and other accuracy information.
 JV6690
 JV6690.The horizontal coordinates were established by GPS observations
 JV6690.and adjusted by the National Geodetic Survey in June 2012.
 JV6690
 JV6690.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6690.been affixed to the stable North American tectonic plate. See 
 JV6690.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6690
 JV6690.The horizontal coordinates are valid at the epoch date displayed above
 JV6690.which is a decimal equivalence of Year/Month/Day.
 JV6690
 JV6690.The orthometric height was determined by differential leveling.
 JV6690.The vertical network tie was performed by a horz. field party for horz.
 JV6690.obs reductions. Reset procedures were used to establish the elevation.
 JV6690
 JV6690.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6690.GEOID18 height accuracy estimate available here.
 JV6690
 JV6690.Click photographs - Photos may exist for this station.
 JV6690
 JV6690.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6690
 JV6690.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6690
 JV6690.The ellipsoidal height was determined by GPS observations
 JV6690.and is referenced to NAD 83.
 JV6690
 JV6690. The following values were computed from the NAD 83(2011) position.
 JV6690
 JV6690;                    North         East     Units Scale Factor Converg.
 JV6690;SPC MD       -   164,613.154   397,832.886   MT  0.99996123   -0 00 56.6
 JV6690;SPC MD       -   540,068.32  1,305,223.39   sFT  0.99996123   -0 00 56.6
 JV6690;UTM  18      - 4,335,330.192   325,007.953   MT  0.99997706   -1 16 43.8
 JV6690
 JV6690!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6690!SPC MD       -   0.99998188  x   0.99996123  =   0.99994311
 JV6690!UTM  18      -   0.99998188  x   0.99997706  =   0.99995894
 JV6690
 JV6690_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2500735330(NAD 83)
 JV6690
 JV6690                          SUPERSEDED SURVEY CONTROL
 JV6690
 JV6690  NAD 83(2007)-  39 08 58.53574(N)    077 01 30.25511(W) AD(2002.00) 0
 JV6690  ELLIP H (02/10/07)  115.545  (m)                       GP(2002.00)    
 JV6690  ELLIP H (08/09/02)  115.560  (m)                       GP(       ) 4 2
 JV6690  NAD 83(1991)-  39 08 58.53631(N)    077 01 30.25542(W) AD(       ) B
 JV6690  ELLIP H (10/21/93)  115.490  (m)                       GP(       ) 2 2
 JV6690  NAD 83(1991)-  39 08 58.53606(N)    077 01 30.25477(W) AD(       ) 1
 JV6690  NAD 83(1991)-  39 08 58.53466(N)    077 01 30.25507(W) AD(       ) 1
 JV6690  ELLIP H (01/27/92)  115.443  (m)                       GP(       ) 4 1
 JV6690  NAD 83(1986)-  39 08 58.53392(N)    077 01 30.26499(W) AD(       ) 1
 JV6690  NGVD 29             147.61   (m)          484.3    (f) LEVELING    3  
 JV6690
 JV6690.Superseded values are not recommended for survey control.
 JV6690
 JV6690.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6690.See file dsdata.pdf to determine how the superseded data were derived.
 JV6690
 JV6690_MARKER: DD = SURVEY DISK
 JV6690_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6690_STAMPING: 4978 19800
 JV6690_MARK LOGO: WSSC
 JV6690_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6690_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6690+STABILITY: SURFACE MOTION
 JV6690_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6690+SATELLITE: SATELLITE OBSERVATIONS - December 27, 2006
 JV6690
 JV6690  HISTORY     - Date     Condition        Report By
 JV6690  HISTORY     - 1989     MONUMENTED       WSSC
 JV6690  HISTORY     - 19901025 GOOD             MD-027
 JV6690  HISTORY     - 19910819 GOOD
 JV6690  HISTORY     - 19921026 GOOD             NGS
 JV6690  HISTORY     - 19990610 GOOD             GEOMET
 JV6690  HISTORY     - 20010403 GOOD             DMW
 JV6690  HISTORY     - 20011116 GOOD             DMW
 JV6690  HISTORY     - 20020125 GOOD             MDSHA
 JV6690  HISTORY     - 20040302 GOOD             BOWMAN
 JV6690  HISTORY     - 20050405 GOOD             USPSQD
 JV6690  HISTORY     - 20061227 GOOD             NGS
 JV6690
 JV6690                          STATION DESCRIPTION
 JV6690
 JV6690'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6690'THE STATION IS LOCATED ABOUT 1.0 KM (0.6 MI) WEST OF ASHTON, 4.9 KM
 JV6690'(3.0 MI) SOUTH OF BRIGHTON AND 3.7 KM (2.3 MI) EAST OF OLNEY. TO
 JV6690'REACH THE STATION FROM THE INTERSECTION OF STATE HWY RTE 108
 JV6690'(OLNEY-SANDY SPRING RD) AND RTE 650 (NEW HAMPSHIRE AVE) IN ASHTON GO
 JV6690'WEST 0.95 KM (0.59 MI) ON RTE 108 TO SKY MEADOW WAY.  TURN RIGHT AND
 JV6690'GO NORTH 23 M (75.5 FT) TO THE STATION ON THE RIGHT.  THE STATION IS
 JV6690'15 M (49.2 FT) ENE OF SKY MEADOW WAY ON TOP OF A SMALL
 JV6690'HILL. OWNERSHIP--COUNTY ROAD RIGHT-OF-WAY. THE STATION MARK IS A
 JV6690'STANDARD WSSC BRASS DISK STAMPED 4978  19800 SET IN THE TOP OF A
 JV6690'ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH IN A
 JV6690'GRASS KNOLL. IT IS 7.63 M (25.03 FT) EAST OF A REFERENCE NAIL IN THE
 JV6690'NORTH SIDE OF A 0.05 M (0.16 FT) OAK TREE, 10.4 M (34.1 FT) NNE OF A
 JV6690'REFERENCE NAIL IN THE WEST SIDE OF A 0.50 M (1.64 FT) CEDAR TREE,
 JV6690'17.2 M (56.4 FT) WEST OF THE SW CORNER OF HOUSE NUMBER 617 AND 21.23
 JV6690'M (69.65 FT) SW OF THE NW CORNER OF HOUSE NUMBER 617. NO REFERENCES
 JV6690'WERE ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR
 JV6690'THIS STAION AT THIS TIME.
 JV6690
 JV6690                          STATION RECOVERY (1990)
 JV6690
 JV6690'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 1990
 JV6690'RECOVERED IN GOOD CONDITION.
 JV6690
 JV6690                          STATION RECOVERY (1991)
 JV6690
 JV6690'RECOVERED 1991
 JV6690'RECOVERED IN GOOD CONDITION.
 JV6690
 JV6690                          STATION RECOVERY (1992)
 JV6690
 JV6690'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 JV6690'THE STATION IS LOCATED ABOUT 4.9 KM (3.05 MI) SOUTH OF BRIGHTON, 3.7
 JV6690'KM (2.30 MI) EAST OF OLNEY AND 1.0 KM (0.60 MI) WEST OF ASHTON.
 JV6690'OWNERSHIP--STATE HIGHWAY RIGHT-OF-WAY.
 JV6690'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY ROUTE 108
 JV6690'(OLNEY-SANDY SPRING RD) AND ROUTE 650 (NEW HAMPSHIRE AVE) IN ASHTON,
 JV6690'GO WEST 0.95 KM (0.60 MI) ON ROUTE 108 TO SKY MEADOW WAY.  TURN RIGHT
 JV6690'AND GO NORTH 23 M (75.5 FT) TO THE STATION ON THE RIGHT.  THE STATION
 JV6690'IS 15 M (49.2 FT) EAST-NORTHEAST OF SKY MEADOW WAY ON TOP OF A SMALL
 JV6690'HILL.
 JV6690'THE STATION IS A STANDARD WSSC BRASS DISK SET IN THE TOP OF A ROUND
 JV6690'CONCRETE MONUMENT.  LOCATED 21.23 M (69.65 FT) SOUTHWEST OF THE
 JV6690'NORTHWEST CORNER OF HOUSE NUMBER 617, 17.2 M (56.4 FT) WEST OF THE
 JV6690'SOUTHWEST CORNER OF HOUSE NUMBER 617, 10.4 M (34.1 FT)
 JV6690'NORTH-NORTHEAST OF A REFERENCE NAIL IN THE WEST SIDE OF A 0.5 M
 JV6690'(1.6 FT) CEDAR TREE AND 7.63 M (25.03 FT) EAST OF A REFERENCE NAIL IN
 JV6690'THE NORTH SIDE OF A 0.05 M (0.16 FT) OAK TREE.
 JV6690
 JV6690                          STATION RECOVERY (1999)
 JV6690
 JV6690'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BB)
 JV6690'RECOVERED AS DESCRIBED.
 JV6690
 JV6690                          STATION RECOVERY (2001)
 JV6690
 JV6690'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV6690'MARK IS UNDERCOVER. MAY NOT BE SUITABLE FOR GPS UNDER FULL COVER IN
 JV6690'LATE SPRING/SUMMER.
 JV6690
 JV6690                          STATION RECOVERY (2001)
 JV6690
 JV6690'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV6690'RECOVERY NOTE
 JV6690'STATION FOUND IN GOOD CONDITION 11/2001
 JV6690
 JV6690                          STATION RECOVERY (2002)
 JV6690
 JV6690'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV6690'RECOVERED AS DESCRIBED.
 JV6690
 JV6690                          STATION RECOVERY (2004)
 JV6690
 JV6690'RECOVERY NOTE BY BOWMAN CONSULTING GROUP 2004 (PJT)
 JV6690'RECOVERED AS DESCRIBED
 JV6690
 JV6690                          STATION RECOVERY (2005)
 JV6690
 JV6690'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6690'RECOVERED IN GOOD CONDITION.
 JV6690
 JV6690                          STATION RECOVERY (2006)
 JV6690
 JV6690'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV6690'GPS SUITEABILITY IS VERY POOR WITH LARGE TREES EAST TO SOUTH TO WEST.
 JV6690'MARK IS AT THE SOUTHEAST CORNER OF HEDGE SURROUNDING AN UNDERGROUND
 JV6690'CABLE ACCESS HATCH AND 3.9 M EAST OF A HIGH VOLTAGE SERVICE BOX AND
 JV6690'RECESSED 2 CM BELOW GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6692 ***********************************************************************
 JV6692  DESIGNATION -  4980
 JV6692  PID         -  JV6692
 JV6692  STATE/COUNTY-  MD/MONTGOMERY
 JV6692  COUNTRY     -  US
 JV6692  USGS QUAD   -  STERLING (2019)
 JV6692
 JV6692                         *CURRENT SURVEY CONTROL
 JV6692  ______________________________________________________________________
 JV6692* NAD 83(2011) POSITION- 39 06 14.23972(N) 077 28 19.53447(W)   ADJUSTED
 JV6692* NAD 83(2011) ELLIP HT-    30.465 (meters)        (06/27/12)   ADJUSTED
 JV6692* NAD 83(2011) EPOCH   -  2010.00
 JV6692* NAVD 88 ORTHO HEIGHT -    62.5   (meters)      205.    (feet) VERTCON3
 JV6692  ______________________________________________________________________
 JV6692  GEOID HEIGHT    -        -32.207 (meters)                     GEOID18
 JV6692  NAD 83(2011) X  -  1,075,048.656 (meters)                     COMP
 JV6692  NAD 83(2011) Y  - -4,838,078.069 (meters)                     COMP
 JV6692  NAD 83(2011) Z  -  4,001,298.507 (meters)                     COMP
 JV6692  LAPLACE CORR    -          5.19  (seconds)                    DEFLEC18
 JV6692
 JV6692  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6692  Standards:
 JV6692         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6692            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6692  -------------------------------------------------------------------
 JV6692  NETWORK    3.36   8.62           1.36   1.25   4.40      0.58034216
 JV6692  -------------------------------------------------------------------
 JV6692  Click here for local accuracies and other accuracy information.
 JV6692
 JV6692.The horizontal coordinates were established by GPS observations
 JV6692.and adjusted by the National Geodetic Survey in June 2012.
 JV6692
 JV6692.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6692.been affixed to the stable North American tectonic plate. See 
 JV6692.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6692
 JV6692.The horizontal coordinates are valid at the epoch date displayed above
 JV6692.which is a decimal equivalence of Year/Month/Day.
 JV6692
 JV6692.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6692.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6692
 JV6692.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6692.GEOID18 height accuracy estimate available here.
 JV6692
 JV6692.Click photographs - Photos may exist for this station.
 JV6692
 JV6692.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6692
 JV6692.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6692
 JV6692.The ellipsoidal height was determined by GPS observations
 JV6692.and is referenced to NAD 83.
 JV6692
 JV6692. The following values were computed from the NAD 83(2011) position.
 JV6692
 JV6692;                    North         East     Units Scale Factor Converg.
 JV6692;SPC MD       -   159,652.041   359,166.106   MT  0.99995775   -0 17 46.7
 JV6692;SPC MD       -   523,791.74  1,178,364.13   sFT  0.99995775   -0 17 46.7
 JV6692;SPC VA N     - 2,160,039.496 3,588,910.203   MT  0.99998437   +0 38 29.5
 JV6692;SPC VA N     - 7,086,729.58 11,774,616.22   sFT  0.99998437   +0 38 29.5
 JV6692;UTM  18      - 4,331,222.365   286,237.029   MT  1.00016268   -1 33 35.3
 JV6692
 JV6692!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6692!SPC MD       -   0.99999522  x   0.99995775  =   0.99995297
 JV6692!SPC VA N     -   0.99999522  x   0.99998437  =   0.99997959
 JV6692!UTM  18      -   0.99999522  x   1.00016268  =   1.00015790
 JV6692
 JV6692_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8623731222(NAD 83)
 JV6692
 JV6692                          SUPERSEDED SURVEY CONTROL
 JV6692
 JV6692  NAD 83(2007)-  39 06 14.24002(N)    077 28 19.53508(W) AD(2002.00) 0
 JV6692  ELLIP H (02/10/07)   30.492  (m)                       GP(2002.00)    
 JV6692  ELLIP H (08/30/02)   30.454  (m)                       GP(       ) 4 2
 JV6692  NAD 83(1993)-  39 06 14.24046(N)    077 28 19.53497(W) AD(       ) 1
 JV6692  ELLIP H (11/14/94)   30.384  (m)                       GP(       ) 4 2
 JV6692  NAD 83(1991)-  39 06 14.23966(N)    077 28 19.53435(W) AD(       ) 1
 JV6692  ELLIP H (01/27/92)   30.394  (m)                       GP(       ) 4 1
 JV6692  NAD 83(1986)-  39 06 14.23984(N)    077 28 19.54536(W) AD(       ) 1
 JV6692  NGVD 29 (03/05/91)   62.7    (m)  OSU 89B  model used  GPS OBS        
 JV6692
 JV6692.Superseded values are not recommended for survey control.
 JV6692
 JV6692.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6692.See file dsdata.pdf to determine how the superseded data were derived.
 JV6692
 JV6692_MARKER: DD = SURVEY DISK
 JV6692_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6692_STAMPING: 4980  19803
 JV6692_MARK LOGO: WSSC
 JV6692_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6692_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6692+STABILITY: SURFACE MOTION
 JV6692_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6692+SATELLITE: SATELLITE OBSERVATIONS - July 11, 2010
 JV6692
 JV6692  HISTORY     - Date     Condition        Report By
 JV6692  HISTORY     - 1989     MONUMENTED       WSSC
 JV6692  HISTORY     - 20030605 GOOD             DEWDAV
 JV6692  HISTORY     - 20100711 GOOD             GEOCAC
 JV6692
 JV6692                          STATION DESCRIPTION
 JV6692
 JV6692'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6692'THE STATION IS LOCATED ABOUT 7.2 KM (4.5 MI) SW OF POOLESVILLE, 13.3
 JV6692'KM (8.3 MI) NW OF SENECA AND 0.5 KM (0.3 MI) NE OF THE VIRGINIA STATE
 JV6692'LINE. TO REACH THE STATION FROM STATE ROAD RTE 109 (ELGIN RD) AND RTE
 JV6692'107 (WHITES FERRY RD) IN POOLESVILLE GO WEST 3.5 KM (2.2 MI) ON RTE
 JV6692'107 TO EDWARDS FERRY RD, TURN LEFT AND GO SOUTH 7.0 KM (4.3 MI) TO
 JV6692'THE STATION THE RIGHT.  THE STATION IS NE OF LOCK 25 ON THE C AND O
 JV6692'CANAL. OWNERSHIP--U.S. PARK SERVICE. THE STATION MARK IS A STANDARD
 JV6692'WSSC BRASS DISK STAMPED 4980  19803 SET IN THE TOP OF A ROUND
 JV6692'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER AND RECESSED 0.1 M
 JV6692'(0.3 FT) . IT IS 38.7 M (127.0 FT) SE OF THE NE CORNER OF A BRICK
 JV6692'BUILDING, 38.84 M (127.43 FT) ENE OF THE SE CORNER OF THE BRICK
 JV6692'BUILDING, 53.42 M (175.26 FT) NE OF USGS BRASS BENCH MARK DISK
 JV6692'STAMPED 88 IN THE SW CORNER OF LOCK 25, AND 24.22 M (79.46 FT) EAST
 JV6692'OF THE FACE OF A 0.6 M (2.0 FT) MAPLE. NO REFERENCES WERE ESTABLISHED
 JV6692'AT THIS TIME. NO STATIONS WERE SET TO SERVE AS AZIMUTH MARKS AT THIS
 JV6692'TIME.
 JV6692
 JV6692                          STATION RECOVERY (2003)
 JV6692
 JV6692'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (CSW)
 JV6692'RECOVERED IN GOOD CONDITION.
 JV6692
 JV6692                          STATION RECOVERY (2010)
 JV6692
 JV6692'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV6692'RECOVERED IN GOOD CONDITION. STATION IS RECESSED 4IN, AND IS APPROX
 JV6692'4.5FT EAST OF EDGE OF STONE RETAINING WALL FOR OVERFLOW LOCK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6693 ***********************************************************************
 JV6693  DESIGNATION -  4986
 JV6693  PID         -  JV6693
 JV6693  STATE/COUNTY-  MD/MONTGOMERY
 JV6693  COUNTRY     -  US
 JV6693  USGS QUAD   -  ROCKVILLE (2016)
 JV6693
 JV6693                         *CURRENT SURVEY CONTROL
 JV6693  ______________________________________________________________________
 JV6693* NAD 83(2011) POSITION- 39 00 03.33874(N) 077 14 54.57070(W)   ADJUSTED
 JV6693* NAD 83(2011) ELLIP HT-    20.361 (meters)        (06/27/12)   ADJUSTED
 JV6693* NAD 83(2011) EPOCH   -  2010.00
 JV6693* NAVD 88 ORTHO HEIGHT -    51.99  (+/-2cm)      170.6   (feet) VERTCON3
 JV6693  ______________________________________________________________________
 JV6693  GEOID HEIGHT    -        -31.722 (meters)                     GEOID18
 JV6693  NAD 83(2011) X  -  1,095,510.227 (meters)                     COMP
 JV6693  NAD 83(2011) Y  - -4,840,866.606 (meters)                     COMP
 JV6693  NAD 83(2011) Z  -  3,992,409.850 (meters)                     COMP
 JV6693  LAPLACE CORR    -          0.25  (seconds)                    DEFLEC18
 JV6693  VERT ORDER      -  THIRD ? (See Below)
 JV6693
 JV6693  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6693  Standards:
 JV6693         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6693            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6693  -------------------------------------------------------------------
 JV6693  NETWORK    2.45   5.90           0.98   0.93   3.01      0.57304709
 JV6693  -------------------------------------------------------------------
 JV6693  Click here for local accuracies and other accuracy information.
 JV6693
 JV6693.The horizontal coordinates were established by GPS observations
 JV6693.and adjusted by the National Geodetic Survey in June 2012.
 JV6693
 JV6693.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6693.been affixed to the stable North American tectonic plate. See 
 JV6693.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6693
 JV6693.The horizontal coordinates are valid at the epoch date displayed above
 JV6693.which is a decimal equivalence of Year/Month/Day.
 JV6693
 JV6693.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6693.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6693
 JV6693.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6693.GEOID18 height accuracy estimate available here.
 JV6693
 JV6693.The vertical order pertains to the NGVD 29 superseded value.
 JV6693
 JV6693.Click photographs - Photos may exist for this station.
 JV6693
 JV6693.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6693
 JV6693.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6693
 JV6693.The ellipsoidal height was determined by GPS observations
 JV6693.and is referenced to NAD 83.
 JV6693
 JV6693. The following values were computed from the NAD 83(2011) position.
 JV6693
 JV6693;                    North         East     Units Scale Factor Converg.
 JV6693;SPC MD       -   148,138.458   378,475.380   MT  0.99995222   -0 09 21.5
 JV6693;SPC MD       -   486,017.59  1,241,714.64   sFT  0.99995222   -0 09 21.5
 JV6693;SPC VA N     - 2,148,843.116 3,608,405.703   MT  0.99997073   +0 46 51.9
 JV6693;SPC VA N     - 7,049,996.12 11,838,577.71   sFT  0.99997073   +0 46 51.9
 JV6693;UTM  18      - 4,319,284.577   305,291.187   MT  1.00006684   -1 24 55.8
 JV6693
 JV6693!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6693!SPC MD       -   0.99999681  x   0.99995222  =   0.99994903
 JV6693!SPC VA N     -   0.99999681  x   0.99997073  =   0.99996754
 JV6693!UTM  18      -   0.99999681  x   1.00006684  =   1.00006365
 JV6693
 JV6693_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0529119284(NAD 83)
 JV6693
 JV6693                          SUPERSEDED SURVEY CONTROL
 JV6693
 JV6693  NAD 83(2007)-  39 00 03.33922(N)    077 14 54.57108(W) AD(2002.00) 0
 JV6693  ELLIP H (02/10/07)   20.386  (m)                       GP(2002.00)    
 JV6693  ELLIP H (08/30/02)   20.399  (m)                       GP(       ) 4 2
 JV6693  NAD 83(1991)-  39 00 03.33905(N)    077 14 54.57175(W) AD(       ) 1
 JV6693  ELLIP H (01/27/92)   20.311  (m)                       GP(       ) 4 1
 JV6693  NAD 83(1986)-  39 00 03.33846(N)    077 14 54.58219(W) AD(       ) 1
 JV6693  NGVD 29              52.23   (m)          171.4    (f) LEVELING    3  
 JV6693
 JV6693.Superseded values are not recommended for survey control.
 JV6693
 JV6693.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6693.See file dsdata.pdf to determine how the superseded data were derived.
 JV6693
 JV6693_MARKER: DD = SURVEY DISK
 JV6693_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV6693_SP_SET: ROOF USED AS OBSERVATION DECK
 JV6693_STAMPING: BOUNDARY MARKER WASHINGTON AQUEDUCT
 JV6693_MARK LOGO: USACE
 JV6693_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6693_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6693+STABILITY: SURFACE MOTION
 JV6693_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6693+SATELLITE: SATELLITE OBSERVATIONS - January 17, 2017
 JV6693
 JV6693  HISTORY     - Date     Condition        Report By
 JV6693  HISTORY     - UNK      MONUMENTED       USACE
 JV6693  HISTORY     - 19890918 GOOD
 JV6693  HISTORY     - 19900222 GOOD             WSSC
 JV6693  HISTORY     - 20060414 GOOD             GEOCAC
 JV6693  HISTORY     - 20110315 GOOD             GEOCAC
 JV6693  HISTORY     - 20110326 GOOD             NGS
 JV6693  HISTORY     - 20170117 GOOD             NPS
 JV6693
 JV6693                          STATION DESCRIPTION
 JV6693
 JV6693'DESCRIBED 1989
 JV6693'RECOVERED IN GOOD CONDITION.
 JV6693
 JV6693                          STATION RECOVERY (1990)
 JV6693
 JV6693'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV6693'THE STATION IS LOCATED 0.3 KM (0.2 MI) NE OF OLMSTED ISLAND, 0.6 KM
 JV6693'(0.4 MI) SSE OF CONN ISLAND, 2.4 KM (1.5 MI) WSW OF AVENEL. TO REACH
 JV6693'THE STATION FROM THE INTERSECTION OF STATE ROADS RTE 190 (RIVER RD)
 JV6693'AND RTE 189 (FALLS RD) IN POTOMAC GO SW ON RTE 189 3.2 KM (2.0 MI) TO
 JV6693'ENTRANCE ROAD TO GREAT FALLS PARK, TURN RIGHT AND GO NW 2.1 KM
 JV6693'(1.3 MI) TO CIRCLE AT END OF ROAD, GO AROUND CIRCLE AND GO SOUTH 0.2
 JV6693'KM (0.1 MI) TO PARKING AREA .  WALK SOUTH DOWN A DIRT PATH FOR 75 M
 JV6693'(246.1 FT) TO FOOT BRIDGE, GO WEST ACROSS A FOOT BRIDGE TO A DIRT
 JV6693'ROAD, TURN RIGHT AND GO NORTH 60 M (196.8 FT) TO THE STATION ON THE
 JV6693'LEFT.  THE STATION IS IN THE CONCRETE AND STONE ROOF USED AS AN
 JV6693'OBSERVATION DECK. OWNERSHIP--U.S. PARK SERVICE PROPERTY. THE STATION
 JV6693'MARK IS A U.S. ARMY CORP OF ENGINEERS SURVEY BOUNDARY BRASS DISK WITH
 JV6693'NO STAMPING FLUSH IN THE ROOF. NO REFERENCES WERE ESTABLISHED AT THIS
 JV6693'TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS
 JV6693'TIME.
 JV6693
 JV6693                          STATION RECOVERY (2006)
 JV6693
 JV6693'RECOVERY NOTE BY GEOCACHING 2006 (BRW)
 JV6693'RECOVERED IN GOOD CONDITION.
 JV6693
 JV6693                          STATION RECOVERY (2011)
 JV6693
 JV6693'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV6693'RECOVERED IN GOOD CONDITION.
 JV6693
 JV6693                          STATION RECOVERY (2011)
 JV6693
 JV6693'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DW)
 JV6693'RECOVERED IN GOOD CONDITION.
 JV6693
 JV6693                          STATION RECOVERY (2017)
 JV6693
 JV6693'RECOVERY NOTE BY NATIONAL PARK SERVICE 2017 (JCR)
 JV6693'THE MARK IS LOCATED WITHIN THE CHESAPEAKE AND OHIO NATIONAL HISTORICAL
 JV6693'PARK. MARK APPEARED TO BE IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8972 ***********************************************************************
 HV8972  HT_MOD      -  This is a Height Modernization Survey Station.
 HV8972  DESIGNATION -  4987
 HV8972  PID         -  HV8972
 HV8972  STATE/COUNTY-  MD/MONTGOMERY
 HV8972  COUNTRY     -  US
 HV8972  USGS QUAD   -  FALLS CHURCH (2019)
 HV8972
 HV8972                         *CURRENT SURVEY CONTROL
 HV8972  ______________________________________________________________________
 HV8972* NAD 83(2011) POSITION- 38 58 07.78319(N) 077 08 21.72319(W)   ADJUSTED
 HV8972* NAD 83(2011) ELLIP HT-    14.642 (meters)        (06/27/12)   ADJUSTED
 HV8972* NAD 83(2011) EPOCH   -  2010.00
 HV8972* NAVD 88 ORTHO HEIGHT -    46.49  (meters)      152.5   (feet) GPS OBS
 HV8972  ______________________________________________________________________
 HV8972  NAVD 88 orthometric height was determined with geoid model    GEOID03
 HV8972  GEOID HEIGHT    -        -31.800 (meters)                     GEOID03
 HV8972  GEOID HEIGHT    -        -31.842 (meters)                     GEOID18
 HV8972  NAD 83(2011) X  -  1,105,226.041 (meters)                     COMP
 HV8972  NAD 83(2011) Y  - -4,840,952.597 (meters)                     COMP
 HV8972  NAD 83(2011) Z  -  3,989,636.332 (meters)                     COMP
 HV8972  LAPLACE CORR    -         -1.80  (seconds)                    DEFLEC18
 HV8972
 HV8972  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8972  Standards:
 HV8972         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8972            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8972  -------------------------------------------------------------------
 HV8972  NETWORK    1.15   2.25           0.50   0.44   1.15      0.04945213
 HV8972  -------------------------------------------------------------------
 HV8972  Click here for local accuracies and other accuracy information.
 HV8972
 HV8972.The horizontal coordinates were established by GPS observations
 HV8972.and adjusted by the National Geodetic Survey in June 2012.
 HV8972
 HV8972.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8972.been affixed to the stable North American tectonic plate. See 
 HV8972.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8972
 HV8972.The horizontal coordinates are valid at the epoch date displayed above
 HV8972.which is a decimal equivalence of Year/Month/Day.
 HV8972
 HV8972.The orthometric height was determined by GPS observations and a
 HV8972.high-resolution geoid model using precise GPS observation and
 HV8972.processing techniques.
 HV8972
 HV8972.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8972.GEOID18 height accuracy estimate available here.
 HV8972
 HV8972.Click photographs - Photos may exist for this station.
 HV8972
 HV8972.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8972
 HV8972.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8972
 HV8972.The ellipsoidal height was determined by GPS observations
 HV8972.and is referenced to NAD 83.
 HV8972
 HV8972. The following values were computed from the NAD 83(2011) position.
 HV8972
 HV8972;                    North         East     Units Scale Factor Converg.
 HV8972;SPC MD       -   144,555.103   387,922.389   MT  0.99995116   -0 05 14.9
 HV8972;SPC MD       -   474,261.20  1,272,708.70   sFT  0.99995116   -0 05 14.9
 HV8972;SPC VA N     - 2,145,414.645 3,617,910.203   MT  0.99996714   +0 50 57.1
 HV8972;SPC VA N     - 7,038,747.88 11,869,760.39   sFT  0.99996714   +0 50 57.1
 HV8972;UTM  18      - 4,315,494.176   314,658.058   MT  1.00002301   -1 20 45.0
 HV8972
 HV8972!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8972!SPC MD       -   0.99999770  x   0.99995116  =   0.99994886
 HV8972!SPC VA N     -   0.99999770  x   0.99996714  =   0.99996484
 HV8972!UTM  18      -   0.99999770  x   1.00002301  =   1.00002071
 HV8972
 HV8972_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1465815494(NAD 83)
 HV8972
 HV8972                          SUPERSEDED SURVEY CONTROL
 HV8972
 HV8972  NAD 83(2007)-  38 58 07.78355(N)    077 08 21.72399(W) AD(2002.00) 1
 HV8972  ELLIP H (02/20/09)   14.664  (m)                       GP(2002.00) 4 2
 HV8972  NAD 83(1991)-  38 58 07.78375(N)    077 08 21.72398(W) AD(       ) 1
 HV8972  ELLIP H (01/15/08)   14.686  (m)                       GP(       ) 4 2
 HV8972  NAD 83(2007)-  38 58 07.78390(N)    077 08 21.72388(W) AD(2002.00) 0
 HV8972  ELLIP H (02/10/07)   14.706  (m)                       GP(2002.00)    
 HV8972  ELLIP H (08/30/02)   14.716  (m)                       GP(       ) 4 2
 HV8972  NAD 83(1991)-  38 58 07.78379(N)    077 08 21.72429(W) AD(       ) 1
 HV8972  ELLIP H (01/27/92)   14.634  (m)                       GP(       ) 4 1
 HV8972  NAD 83(1986)-  38 58 07.78299(N)    077 08 21.73467(W) AD(       ) 1
 HV8972  NGVD 29              46.70   (m)          153.2    (f) LEVELING    3  
 HV8972
 HV8972.Superseded values are not recommended for survey control.
 HV8972
 HV8972.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8972.See file dsdata.pdf to determine how the superseded data were derived.
 HV8972
 HV8972_MARKER: DD = SURVEY DISK
 HV8972_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8972_STAMPING: 4987 19818
 HV8972_MARK LOGO: WSSC
 HV8972_PROJECTION: FLUSH
 HV8972_MAGNETIC: S = STEEL SPIKE IMBEDDED IN MONUMENT
 HV8972_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8972+STABILITY: SURFACE MOTION
 HV8972_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8972+SATELLITE: SATELLITE OBSERVATIONS - November 03, 2019
 HV8972
 HV8972  HISTORY     - Date     Condition        Report By
 HV8972  HISTORY     - 1989     MONUMENTED       WSSC
 HV8972  HISTORY     - 19890906 GOOD
 HV8972  HISTORY     - 19970813 GOOD             DMW
 HV8972  HISTORY     - 20000428 GOOD             GEOMET
 HV8972  HISTORY     - 200505   GOOD             GWS
 HV8972  HISTORY     - 20070419 GOOD             VA-059
 HV8972  HISTORY     - 20100116 GOOD             NGS
 HV8972  HISTORY     - 20191103 GOOD             DEWDAV
 HV8972
 HV8972                          STATION DESCRIPTION
 HV8972
 HV8972'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8972'THE STATION IS LOCATED ABOUT 3.5 KM (2.2 MI) NW OF DISTRICT THE
 HV8972'DISTRICT OF COLUMBIA LINE, 3.7 KM (2.3 MI) WEST OF SOMERSET, 3.5 KM
 HV8972'(2.2 MI) SW OF BETHESDA. TO REACH THE STATION FROM THE INTERSECTION
 HV8972'OF STATE ROADS RTE 396 (MASSACHUSETTS AVE) AND RTE 614 (GOLDSBORO RD)
 HV8972'.  GO SW ON RTE 614 0.6 KM (0.4 MI) TO MACARTHUR BLVD, TURN RIGHT AND
 HV8972'GO NW 30 M (98.4 FT) TO THE STATION ON THE LEFT IN THE GRASS
 HV8972'ISLAND. OWNERSHIP--UNITED STATES GOVERNMENT THE STATION MARK IS A
 HV8972'STANDARD WSSC BRASS DISK STAMPED 4987  19818.  SET IN THE TOP OF A
 HV8972'ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMENTERFLUSH IN THE GRASS
 HV8972'ISLAND. IT IS 42.53 M (139.53 FT) SOUTH OF A REFERENCE NAIL IN THE
 HV8972'EAST SIDE OF A PEPCO POWER POLE NO 760413-2061, 25.6 M (84.0 FT) SW
 HV8972'OF A REFERENCE NAIL IN THE SOUTH SIDE OF A PEPCO POWER POLE NO
 HV8972'760413-3556, 29.72 M (97.51 FT) NE OF A REFERENCE NAIL IN THE NW SIDE
 HV8972', 3.0 M (9.8 FT) HIGH, OF A PEPCO POWER POLE NO 760413-3642, 18.34 M
 HV8972'(60.17 FT) SE OF A REFERENCE NAIL IN THE NORTH SIDE OF A PEPCO POWER
 HV8972'POLE NO 760413-2254. NO REFERENCE MARKS WERE ESTABLISHED AT THIS
 HV8972'TIME. NO STATIONS SERVE AS AZIMUTH MARKS OF THIS STATION AT THIS
 HV8972'TIME.
 HV8972
 HV8972                          STATION RECOVERY (1989)
 HV8972
 HV8972'RECOVERED 1989
 HV8972'RECOVERED IN GOOD CONDITION.
 HV8972
 HV8972                          STATION RECOVERY (1997)
 HV8972
 HV8972'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (JMS)
 HV8972'RECOVERED AS DESCRIBED.
 HV8972
 HV8972                          STATION RECOVERY (2000)
 HV8972
 HV8972'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (CCG)
 HV8972'GOOD CONDITION.
 HV8972
 HV8972                          STATION RECOVERY (2005)
 HV8972
 HV8972'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2005 (WEH)
 HV8972'RECOVERED AS DESCRIBED.
 HV8972
 HV8972                          STATION RECOVERY (2007)
 HV8972
 HV8972'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2007
 HV8972'RECOVERED IN GOOD CONDITION.
 HV8972
 HV8972                          STATION RECOVERY (2010)
 HV8972
 HV8972'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HV8972'MARK IS 1.36 M (4.4 FT) EAST NORTHEAST OF THE BACKSIDE OF THE CURB
 HV8972'ALONG WEST BOUND MACARTHUR BLVD, 3.15 M (10.3 FT) SOUTH SOUTHWEST OF
 HV8972'THE BACK OF THE CURB ALONG WEST BOUND MACARTHUR BLVD, AND 2.87 M (9.4
 HV8972'FT) SOUTHEAST OF THE WEST END OF THE MEDIAN ISLAND.
 HV8972
 HV8972                          STATION RECOVERY (2019)
 HV8972
 HV8972'RECOVERY NOTE BY DEWBERRY DAVIS 2019 (DEI)
 HV8972'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6494 ***********************************************************************
 JV6494  DESIGNATION -  4989
 JV6494  PID         -  JV6494
 JV6494  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6494  COUNTRY     -  US
 JV6494  USGS QUAD   -  BELTSVILLE (2016)
 JV6494
 JV6494                         *CURRENT SURVEY CONTROL
 JV6494  ______________________________________________________________________
 JV6494* NAD 83(2011) POSITION- 39 01 50.69905(N) 076 54 48.92659(W)   ADJUSTED
 JV6494* NAD 83(2011) ELLIP HT-    11.851 (meters)        (06/27/12)   ADJUSTED
 JV6494* NAD 83(2011) EPOCH   -  2010.00
 JV6494* NAVD 88 ORTHO HEIGHT -    44.010 (meters)      144.39  (feet) ADJUSTED
 JV6494  ______________________________________________________________________
 JV6494  GEOID HEIGHT    -        -32.148 (meters)                     GEOID18
 JV6494  NAD 83(2011) X  -  1,123,313.424 (meters)                     COMP
 JV6494  NAD 83(2011) Y  - -4,832,344.001 (meters)                     COMP
 JV6494  NAD 83(2011) Z  -  3,994,976.857 (meters)                     COMP
 JV6494  LAPLACE CORR    -         -4.40  (seconds)                    DEFLEC18
 JV6494  DYNAMIC HEIGHT  -         43.987 (meters)      144.31  (feet) COMP
 JV6494  MODELED GRAVITY -    980,103.5   (mgal)                       NAVD 88
 JV6494
 JV6494  VERT ORDER      -  SECOND    CLASS II
 JV6494
 JV6494  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6494  Standards:
 JV6494         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6494            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6494  -------------------------------------------------------------------
 JV6494  NETWORK    1.13   2.33           0.46   0.46   1.19     -0.10510773
 JV6494  -------------------------------------------------------------------
 JV6494  Click here for local accuracies and other accuracy information.
 JV6494
 JV6494.The horizontal coordinates were established by GPS observations
 JV6494.and adjusted by the National Geodetic Survey in June 2012.
 JV6494
 JV6494.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6494.been affixed to the stable North American tectonic plate. See 
 JV6494.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6494
 JV6494.The horizontal coordinates are valid at the epoch date displayed above
 JV6494.which is a decimal equivalence of Year/Month/Day.
 JV6494
 JV6494.The orthometric height was determined by differential leveling and
 JV6494.adjusted by the NATIONAL GEODETIC SURVEY
 JV6494.in June 1991.
 JV6494
 JV6494.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6494.GEOID18 height accuracy estimate available here.
 JV6494
 JV6494.Click photographs - Photos may exist for this station.
 JV6494
 JV6494.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6494
 JV6494.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6494
 JV6494.The ellipsoidal height was determined by GPS observations
 JV6494.and is referenced to NAD 83.
 JV6494
 JV6494.The dynamic height is computed by dividing the NAVD 88
 JV6494.geopotential number by the normal gravity value computed on the
 JV6494.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6494.degrees latitude (g = 980.6199 gals.).
 JV6494
 JV6494.The modeled gravity was interpolated from observed gravity values.
 JV6494
 JV6494. The following values were computed from the NAD 83(2011) position.
 JV6494
 JV6494;                    North         East     Units Scale Factor Converg.
 JV6494;SPC MD       -   151,423.294   407,481.735   MT  0.99995349   +0 03 15.2
 JV6494;SPC MD       -   496,794.59  1,336,879.66   sFT  0.99995349   +0 03 15.2
 JV6494;UTM  18      - 4,321,931.132   334,364.129   MT  0.99993783   -1 12 19.2
 JV6494
 JV6494!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6494!SPC MD       -   0.99999814  x   0.99995349  =   0.99995163
 JV6494!UTM  18      -   0.99999814  x   0.99993783  =   0.99993597
 JV6494
 JV6494_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3436421931(NAD 83)
 JV6494
 JV6494                          SUPERSEDED SURVEY CONTROL
 JV6494
 JV6494  NAD 83(2007)-  39 01 50.69932(N)    076 54 48.92740(W) AD(2002.00) 0
 JV6494  ELLIP H (02/10/07)   11.876  (m)                       GP(2002.00)    
 JV6494  ELLIP H (08/30/02)   11.886  (m)                       GP(       ) 4 2
 JV6494  ELLIP H (09/09/94)   11.810  (m)                       GP(       ) 4 1
 JV6494  NAD 83(1991)-  39 01 50.69928(N)    076 54 48.92751(W) AD(       ) 1
 JV6494  NAVD 88              44.01   (m)          144.4    (f) LEVELING    3  
 JV6494
 JV6494.Superseded values are not recommended for survey control.
 JV6494
 JV6494.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6494.See file dsdata.pdf to determine how the superseded data were derived.
 JV6494
 JV6494_MARKER: DD = SURVEY DISK
 JV6494_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6494_STAMPING: 4989
 JV6494_MARK LOGO: WSSC
 JV6494_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6494_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6494+STABILITY: SURFACE MOTION
 JV6494_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6494+SATELLITE: SATELLITE OBSERVATIONS - November 02, 2017
 JV6494
 JV6494  HISTORY     - Date     Condition        Report By
 JV6494  HISTORY     - UNK      MONUMENTED       WSSC
 JV6494  HISTORY     - 19910109 GOOD             NGS
 JV6494  HISTORY     - 19930331 GOOD             MSI
 JV6494  HISTORY     - 20000309 GOOD             GEOMET
 JV6494  HISTORY     - 20010316 GOOD             CHANCE
 JV6494  HISTORY     - 20060327 GOOD             INDIV
 JV6494  HISTORY     - 20080704 GOOD             NGS
 JV6494  HISTORY     - 20100901 GOOD             JCLS
 JV6494  HISTORY     - 20140729 GOOD             INDIV
 JV6494  HISTORY     - 20171102 GOOD             INDIV
 JV6494
 JV6494                          STATION DESCRIPTION
 JV6494
 JV6494'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6494'0.7 KM (0.4 MI) SOUTHWESTERLY ALONG U.S. HIGHWAY 1 FROM THE JUNCTION
 JV6494'OF POWDER MILL ROAD IN BELTSVILLE, 22.1 M (72.5 FT) SOUTHWEST OF A
 JV6494'UTILITY POLE, 17.8 M (58.4 FT) SOUTH OF THE SOUTHEAST CORNER OF
 JV6494'WENDYS RESTAURANT BUILDING, 10.6 M (34.8 FT) NORTHWEST OF THE
 JV6494'CENTERLINE OF THE WESTBOUND LANES OF THE HIGHWAY, 5.5 M (18.0 FT)
 JV6494'NORTHWEST OF THE NORTHWEST EDGE OF A SIDEWALK, 5.3 M (17.4 FT)
 JV6494'NORTHEAST OF A FENCE, 0.1 M (0.3 FT) ABOVE THE LEVEL OF THE HIGHWAY,
 JV6494'AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
 JV6494
 JV6494                          STATION RECOVERY (1993)
 JV6494
 JV6494'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV6494'RECOVERED IN GOOD CONDITION.
 JV6494
 JV6494                          STATION RECOVERY (2000)
 JV6494
 JV6494'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (CCG)
 JV6494'GOOD CONDITION.
 JV6494
 JV6494                          STATION RECOVERY (2001)
 JV6494
 JV6494'RECOVERY NOTE BY JE CHANCE AND ASSOCIATES 2001 (CLG)
 JV6494'RECOVERED IN GOOD CONDITION.
 JV6494
 JV6494                          STATION RECOVERY (2006)
 JV6494
 JV6494'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2006 (MEJ)
 JV6494'RECOVERED AS DESCRIBED BY THE WASHGINGTON SANITARY SUBURBAN COMMISSION
 JV6494'(WSSC). APPEARS UNDISTURBED. WSSC PUBLISHED AS NO. 20183.
 JV6494'
 JV6494'OPUS COORDINATES GENERATED DIFFER FROM WSSC PUBLISHED COORDINATES BY
 JV6494'0.98 FEET NORTH/SOUTH AND 2.64 FEET EAST/WEST AND APPROXIMATELY 2.5
 JV6494'FEET IN ELEVATION. FEEL FREE TO CONTACT BY EMAIL WITH QUESTIONS.
 JV6494
 JV6494                          STATION RECOVERY (2008)
 JV6494
 JV6494'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV6494'RECOVERED IN GOOD CONDITION.
 JV6494
 JV6494                          STATION RECOVERY (2010)
 JV6494
 JV6494'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2010
 JV6494'RECOVERED IN GOOD CONDITION.
 JV6494
 JV6494                          STATION RECOVERY (2014)
 JV6494
 JV6494'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 JV6494'RECOVERED AS DESCRIBED DESCRIPTION IS ADEQUATE.
 JV6494
 JV6494                          STATION RECOVERY (2017)
 JV6494
 JV6494'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2017 (WRA)
 JV6494'DESCRIPTION IS ADEQUATE USED FOR STATIC GPS JFS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2620 ***********************************************************************
 JV2620  DESIGNATION -  499
 JV2620  PID         -  JV2620
 JV2620  STATE/COUNTY-  MD/MONTGOMERY
 JV2620  COUNTRY     -  US
 JV2620  USGS QUAD   -  KENSINGTON (2016)
 JV2620
 JV2620                         *CURRENT SURVEY CONTROL
 JV2620  ______________________________________________________________________
 JV2620* NAD 83(1986) POSITION- 39 06 26.     (N) 077 04 45.     (W)   SCALED
 JV2620* NAVD 88 ORTHO HEIGHT -   151.80  (+/-2cm)      498.0   (feet) VERTCON3
 JV2620  ______________________________________________________________________
 JV2620  GEOID HEIGHT    -        -31.811 (meters)                     GEOID18
 JV2620  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2620
 JV2620.The horizontal coordinates were scaled from a map and have
 JV2620.an estimated accuracy of +/- 6 seconds.
 JV2620
 JV2620.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2620.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2620
 JV2620.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2620.GEOID18 height accuracy estimate available here.
 JV2620
 JV2620.The vertical order pertains to the NGVD 29 superseded value.
 JV2620
 JV2620.Click photographs - Photos may exist for this station.
 JV2620
 JV2620;                    North         East    Units  Estimated Accuracy
 JV2620;SPC MD       -   159,910.      393,150.      MT  (+/- 180 meters Scaled)
 JV2620
 JV2620_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ202307(NAD 83)
 JV2620
 JV2620                          SUPERSEDED SURVEY CONTROL
 JV2620
 JV2620  NGVD 29 (11/26/84)  152.015  (m)          498.74   (f) ADJUSTED    2 0
 JV2620
 JV2620.Superseded values are not recommended for survey control.
 JV2620
 JV2620.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2620.See file dsdata.pdf to determine how the superseded data were derived.
 JV2620
 JV2620_MARKER: DB = BENCH MARK DISK
 JV2620_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2620_SP_SET: FOUNDATION
 JV2620_STAMPING: 499
 JV2620_MARK LOGO: USGS
 JV2620_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2620
 JV2620  HISTORY     - Date     Condition        Report By
 JV2620  HISTORY     - 1904     MONUMENTED       USGS
 JV2620  HISTORY     - 1944     GOOD             WSSC
 JV2620  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2620
 JV2620                          STATION DESCRIPTION
 JV2620
 JV2620'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2620'AT NORBECK.
 JV2620'ON GEORGIA AVENUE (STATE HIGHWAY 97), IN THE SOUTHWEST ANGLE OF A
 JV2620'ROAD JUNCTION, AT THE STORE BELONGING TO ARTHUR STONESTREET,
 JV2620'AND IN THE NORTH FOUNDATION.
 JV2620
 JV2620                          STATION RECOVERY (1995)
 JV2620
 JV2620'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2620'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6495 ***********************************************************************
 JV6495  DESIGNATION -  4990
 JV6495  PID         -  JV6495
 JV6495  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6495  COUNTRY     -  US
 JV6495  USGS QUAD   -  BELTSVILLE (2016)
 JV6495
 JV6495                         *CURRENT SURVEY CONTROL
 JV6495  ______________________________________________________________________
 JV6495* NAD 83(1986) POSITION- 39 02 02.38   (N) 076 54 10.78   (W)   HD_HELD1
 JV6495* NAVD 88 ORTHO HEIGHT -    31.535 (meters)      103.46  (feet) ADJUSTED
 JV6495  ______________________________________________________________________
 JV6495  GEOID HEIGHT    -        -32.170 (meters)                     GEOID18
 JV6495  DYNAMIC HEIGHT  -         31.518 (meters)      103.41  (feet) COMP
 JV6495  MODELED GRAVITY -    980,103.8   (mgal)                       NAVD 88
 JV6495
 JV6495  VERT ORDER      -  SECOND    CLASS II
 JV6495
 JV6495.The horizontal coordinates were determined by differentially corrected
 JV6495.hand held GPS observations or other comparable positioning techniques
 JV6495.and have an estimated accuracy of +/- 3 meters.
 JV6495
 JV6495.The orthometric height was determined by differential leveling and
 JV6495.adjusted by the NATIONAL GEODETIC SURVEY
 JV6495.in June 1991.
 JV6495
 JV6495.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6495.GEOID18 height accuracy estimate available here.
 JV6495
 JV6495.Click photographs - Photos may exist for this station.
 JV6495
 JV6495.The dynamic height is computed by dividing the NAVD 88
 JV6495.geopotential number by the normal gravity value computed on the
 JV6495.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6495.degrees latitude (g = 980.6199 gals.).
 JV6495
 JV6495.The modeled gravity was interpolated from observed gravity values.
 JV6495
 JV6495;                    North         East    Units  Estimated Accuracy
 JV6495;SPC MD       -   151,784.4     408,398.8     MT  (+/- 3 meters HH1 GPS) 
 JV6495
 JV6495_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3528822271(NAD 83)
 JV6495
 JV6495                          SUPERSEDED SURVEY CONTROL
 JV6495
 JV6495.No superseded survey control is available for this station.
 JV6495
 JV6495_MARKER: DB = BENCH MARK DISK
 JV6495_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6495_STAMPING: 4990
 JV6495_MARK LOGO: WSSC
 JV6495_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6495_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6495+STABILITY: SURFACE MOTION
 JV6495_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6495+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2008
 JV6495
 JV6495  HISTORY     - Date     Condition        Report By
 JV6495  HISTORY     - UNK      MONUMENTED       WSSC
 JV6495  HISTORY     - 19910109 GOOD             NGS
 JV6495  HISTORY     - 20080920 GOOD             NGS
 JV6495
 JV6495                          STATION DESCRIPTION
 JV6495
 JV6495'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6495'0.4 KM (0.2 MI) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION OF
 JV6495'U.S. HIGHWAY 1 IN BELTSVILLE, 65.0 M (213.3 FT) WEST OF THE NORTHWEST
 JV6495'CORNER OF A BRIDGE, 49.7 M (163.1 FT) EAST OF THE CENTERLINE OF COOK
 JV6495'ROAD, 26.6 M (87.3 FT) SOUTH-SOUTHEAST OF THE SOUTHEAST CORNER OF AN
 JV6495'OFFICE BUILDING, 9.1 M (29.9 FT) SOUTH-SOUTHEAST OF UTILITY POLE
 JV6495'NUMBER 827439-4925 WITH 3 GUY WIRES, 8.2 M (26.9 FT) NORTH OF THE
 JV6495'ROAD CENTERLINE, 0.1 M (0.3 FT) ABOVE THE LEVEL OF THE ROAD, AND THE
 JV6495'MONUMENT IS FLUSH WITH THE GROUND SURFACE.
 JV6495
 JV6495                          STATION RECOVERY (2008)
 JV6495
 JV6495'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV6495'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6496 ***********************************************************************
 JV6496  DESIGNATION -  4991
 JV6496  PID         -  JV6496
 JV6496  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6496  COUNTRY     -  US
 JV6496  USGS QUAD   -  BELTSVILLE (2016)
 JV6496
 JV6496                         *CURRENT SURVEY CONTROL
 JV6496  ______________________________________________________________________
 JV6496* NAD 83(1986) POSITION- 39 01 55.     (N) 076 53 27.     (W)   SCALED
 JV6496* NAVD 88 ORTHO HEIGHT -    39.952 (meters)      131.08  (feet) ADJUSTED
 JV6496  ______________________________________________________________________
 JV6496  GEOID HEIGHT    -        -32.202 (meters)                     GEOID18
 JV6496  DYNAMIC HEIGHT  -         39.931 (meters)      131.01  (feet) COMP
 JV6496  MODELED GRAVITY -    980,100.6   (mgal)                       NAVD 88
 JV6496
 JV6496  VERT ORDER      -  SECOND    CLASS II
 JV6496
 JV6496.The horizontal coordinates were scaled from a map and have
 JV6496.an estimated accuracy of +/- 6 seconds.
 JV6496
 JV6496.The orthometric height was determined by differential leveling and
 JV6496.adjusted by the NATIONAL GEODETIC SURVEY
 JV6496.in June 1991.
 JV6496
 JV6496.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6496.GEOID18 height accuracy estimate available here.
 JV6496
 JV6496.Click photographs - Photos may exist for this station.
 JV6496
 JV6496.The dynamic height is computed by dividing the NAVD 88
 JV6496.geopotential number by the normal gravity value computed on the
 JV6496.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6496.degrees latitude (g = 980.6199 gals.).
 JV6496
 JV6496.The modeled gravity was interpolated from observed gravity values.
 JV6496
 JV6496;                    North         East    Units  Estimated Accuracy
 JV6496;SPC MD       -   151,560.      409,450.      MT  (+/- 180 meters Scaled)
 JV6496
 JV6496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ363220(NAD 83)
 JV6496
 JV6496                          SUPERSEDED SURVEY CONTROL
 JV6496
 JV6496.No superseded survey control is available for this station.
 JV6496
 JV6496_MARKER: DB = BENCH MARK DISK
 JV6496_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6496_STAMPING: 4991
 JV6496_MARK LOGO: WSSC
 JV6496_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6496_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6496+STABILITY: SURFACE MOTION
 JV6496_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6496+SATELLITE: SATELLITE OBSERVATIONS - January 09, 1991
 JV6496
 JV6496  HISTORY     - Date     Condition        Report By
 JV6496  HISTORY     - UNK      MONUMENTED       WSSC
 JV6496  HISTORY     - 19910109 GOOD             NGS
 JV6496
 JV6496                          STATION DESCRIPTION
 JV6496
 JV6496'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6496'1.5 KM (0.9 MI) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION OF
 JV6496'U.S. HIGHWAY 1 IN BELTSVILLE, 67.2 M (220.5 FT) EAST OF A FIRE
 JV6496'HYDRANT, 26.1 M (85.6 FT) EAST OF THE CENTER OF A DRIVEWAY, 16.4 M
 JV6496'(53.8 FT) NORTH OF THE NORTHEAST CORNER OF BUILDING NUMBER 173 (USDA)
 JV6496', 9.6 M (31.5 FT) SOUTH OF THE ROAD CENTERLINE, 0.1 M (0.3 FT) BELOW
 JV6496'THE LEVEL OF THE ROAD, AND THE MONUMENT IS FLUSH WITH THE GROUND
 JV6496'SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6497 ***********************************************************************
 JV6497  DESIGNATION -  4992
 JV6497  PID         -  JV6497
 JV6497  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6497  COUNTRY     -  US
 JV6497  USGS QUAD   -  BELTSVILLE (2016)
 JV6497
 JV6497                         *CURRENT SURVEY CONTROL
 JV6497  ______________________________________________________________________
 JV6497* NAD 83(1986) POSITION- 39 01 53.     (N) 076 52 35.     (W)   SCALED
 JV6497* NAVD 88 ORTHO HEIGHT -    46.365 (meters)      152.12  (feet) ADJUSTED
 JV6497  ______________________________________________________________________
 JV6497  GEOID HEIGHT    -        -32.238 (meters)                     GEOID18
 JV6497  DYNAMIC HEIGHT  -         46.340 (meters)      152.03  (feet) COMP
 JV6497  MODELED GRAVITY -    980,096.4   (mgal)                       NAVD 88
 JV6497
 JV6497  VERT ORDER      -  SECOND    CLASS II
 JV6497
 JV6497.The horizontal coordinates were scaled from a map and have
 JV6497.an estimated accuracy of +/- 6 seconds.
 JV6497
 JV6497.The orthometric height was determined by differential leveling and
 JV6497.adjusted by the NATIONAL GEODETIC SURVEY
 JV6497.in June 1991.
 JV6497
 JV6497.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6497.GEOID18 height accuracy estimate available here.
 JV6497
 JV6497.Click photographs - Photos may exist for this station.
 JV6497
 JV6497.The dynamic height is computed by dividing the NAVD 88
 JV6497.geopotential number by the normal gravity value computed on the
 JV6497.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6497.degrees latitude (g = 980.6199 gals.).
 JV6497
 JV6497.The modeled gravity was interpolated from observed gravity values.
 JV6497
 JV6497;                    North         East    Units  Estimated Accuracy
 JV6497;SPC MD       -   151,500.      410,700.      MT  (+/- 180 meters Scaled)
 JV6497
 JV6497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ375219(NAD 83)
 JV6497
 JV6497                          SUPERSEDED SURVEY CONTROL
 JV6497
 JV6497.No superseded survey control is available for this station.
 JV6497
 JV6497_MARKER: DB = BENCH MARK DISK
 JV6497_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6497_STAMPING: 4992
 JV6497_MARK LOGO: WSSC
 JV6497_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6497_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6497+STABILITY: SURFACE MOTION
 JV6497_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6497+SATELLITE: SATELLITE OBSERVATIONS - January 09, 1991
 JV6497
 JV6497  HISTORY     - Date     Condition        Report By
 JV6497  HISTORY     - UNK      MONUMENTED       WSSC
 JV6497  HISTORY     - 19910109 GOOD             NGS
 JV6497  HISTORY     - 20070624 GOOD             GEOCAC
 JV6497
 JV6497                          STATION DESCRIPTION
 JV6497
 JV6497'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6497'2.8 KM (1.7 MI) SOUTHEASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 JV6497'OF U.S. HIGHWAY 1 IN BELTSVILLE, 61.9 M (203.1 FT) WEST OF THE SOUTH
 JV6497'CORNER OF SHED NUMBER 305, 59.2 M (194.2 FT) WEST OF A UTILITY POLE
 JV6497'WITH 2 GUY WIRES AND 3 TRANSFORMERS, 11.9 M (39.0 FT) NORTHWEST OF
 JV6497'THE CENTER OF A CROSSOVER, 7.9 M (25.9 FT) EAST OF THE CENTERLINE OF
 JV6497'RESEARCH ROAD, 7.7 M (25.3 FT) SOUTHWEST OF AND LEVEL WITH THE ROAD
 JV6497'CENTERLINE, AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
 JV6497
 JV6497                          STATION RECOVERY (2007)
 JV6497
 JV6497'RECOVERY NOTE BY GEOCACHING 2007 (APC)
 JV6497'MARK IS LOCATED NEAR THE CENTER OF A TRIANGULAR PATCH OF GRASS BOUNDED
 JV6497'BY POWER MILL ROAD ON THE NORTH, BY RESEARCH ROAD ON THE SOUTHWEST AND
 JV6497'A CROSSOVER ON THE EAST.
 JV6497'
 JV6497'MARK IS APPROXIMATELY 10.2 FEET SOUTHEAST OF A SOUTH-FACING STOP SIGN
 JV6497'MOUNTED ON A 3.5-INCH WOODEN POST, AND IT IS ABOUT 18 FEET NORTHEAST
 JV6497'OF A NORTH-FACING STOP SIGN MOUNTED ON A METAL POST.
 JV6497'
 JV6497'THE STATION DISK IS ABOUT 3 INCHES BELOW THE SURFACE.
 JV6497'
 JV6497'THE SHED (ACTUALLY A SMALL BRICK BUILDING) AND UTILITY POLE WITH
 JV6497'TRANSFORMERS, MENTIONED IN THE 1991 DESCRIPTION, ARE ACROSS POWDER
 JV6497'MILL ROAD FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6498 ***********************************************************************
 JV6498  DESIGNATION -  4993
 JV6498  PID         -  JV6498
 JV6498  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6498  COUNTRY     -  US
 JV6498  USGS QUAD   -  LAUREL (2016)
 JV6498
 JV6498                         *CURRENT SURVEY CONTROL
 JV6498  ______________________________________________________________________
 JV6498* NAD 83(1986) POSITION- 39 02 03.     (N) 076 51 40.     (W)   SCALED
 JV6498* NAVD 88 ORTHO HEIGHT -    52.634 (meters)      172.68  (feet) ADJUSTED
 JV6498  ______________________________________________________________________
 JV6498  GEOID HEIGHT    -        -32.275 (meters)                     GEOID18
 JV6498  DYNAMIC HEIGHT  -         52.606 (meters)      172.59  (feet) COMP
 JV6498  MODELED GRAVITY -    980,094.7   (mgal)                       NAVD 88
 JV6498
 JV6498  VERT ORDER      -  SECOND    CLASS II
 JV6498
 JV6498.The horizontal coordinates were scaled from a map and have
 JV6498.an estimated accuracy of +/- 6 seconds.
 JV6498
 JV6498.The orthometric height was determined by differential leveling and
 JV6498.adjusted by the NATIONAL GEODETIC SURVEY
 JV6498.in June 1991.
 JV6498
 JV6498.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6498.GEOID18 height accuracy estimate available here.
 JV6498
 JV6498.Click photographs - Photos may exist for this station.
 JV6498
 JV6498.The dynamic height is computed by dividing the NAVD 88
 JV6498.geopotential number by the normal gravity value computed on the
 JV6498.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6498.degrees latitude (g = 980.6199 gals.).
 JV6498
 JV6498.The modeled gravity was interpolated from observed gravity values.
 JV6498
 JV6498;                    North         East    Units  Estimated Accuracy
 JV6498;SPC MD       -   151,810.      412,030.      MT  (+/- 180 meters Scaled)
 JV6498
 JV6498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ389222(NAD 83)
 JV6498
 JV6498                          SUPERSEDED SURVEY CONTROL
 JV6498
 JV6498.No superseded survey control is available for this station.
 JV6498
 JV6498_MARKER: DB = BENCH MARK DISK
 JV6498_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6498_STAMPING: 4993
 JV6498_MARK LOGO: WSSC
 JV6498_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6498_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6498+STABILITY: SURFACE MOTION
 JV6498_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6498+SATELLITE: SATELLITE OBSERVATIONS - January 09, 1991
 JV6498
 JV6498  HISTORY     - Date     Condition        Report By
 JV6498  HISTORY     - UNK      MONUMENTED       WSSC
 JV6498  HISTORY     - 19910109 GOOD             NGS
 JV6498
 JV6498                          STATION DESCRIPTION
 JV6498
 JV6498'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6498'4.1 KM (2.5 MI) SOUTHEASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 JV6498'OF U.S. HIGHWAY 1 IN BELTSVILLE, 59.3 M (194.6 FT) SOUTHWEST OF A
 JV6498'UTILITY POLE WITH 6 GUY WIRES, 38.7 M (127.0 FT) SOUTHEAST OF THE
 JV6498'CENTER OF A DRIVEWAY LEADING TO BUILDING NUMBER 426 (USDA), 8.2 M
 JV6498'(26.9 FT) SOUTHWEST OF THE ROAD CENTERLINE, 1.8 M (5.9 FT) NORTHEAST
 JV6498'OF THE NORTHEAST SUPPORT LEG OF A SIGN, 0.6 M (2.0 FT) BELOW THE
 JV6498'LEVEL OF THE ROAD, AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6499 ***********************************************************************
 JV6499  DESIGNATION -  4994
 JV6499  PID         -  JV6499
 JV6499  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6499  COUNTRY     -  US
 JV6499  USGS QUAD   -  LAUREL (2016)
 JV6499
 JV6499                         *CURRENT SURVEY CONTROL
 JV6499  ______________________________________________________________________
 JV6499* NAD 83(1986) POSITION- 39 02 02.     (N) 076 50 34.     (W)   SCALED
 JV6499* NAVD 88 ORTHO HEIGHT -    41.281 (meters)      135.44  (feet) ADJUSTED
 JV6499  ______________________________________________________________________
 JV6499  GEOID HEIGHT    -        -32.324 (meters)                     GEOID18
 JV6499  DYNAMIC HEIGHT  -         41.259 (meters)      135.36  (feet) COMP
 JV6499  MODELED GRAVITY -    980,093.1   (mgal)                       NAVD 88
 JV6499
 JV6499  VERT ORDER      -  SECOND    CLASS II
 JV6499
 JV6499.The horizontal coordinates were scaled from a map and have
 JV6499.an estimated accuracy of +/- 6 seconds.
 JV6499
 JV6499.The orthometric height was determined by differential leveling and
 JV6499.adjusted by the NATIONAL GEODETIC SURVEY
 JV6499.in June 1991.
 JV6499
 JV6499.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6499.GEOID18 height accuracy estimate available here.
 JV6499
 JV6499.Click photographs - Photos may exist for this station.
 JV6499
 JV6499.The dynamic height is computed by dividing the NAVD 88
 JV6499.geopotential number by the normal gravity value computed on the
 JV6499.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6499.degrees latitude (g = 980.6199 gals.).
 JV6499
 JV6499.The modeled gravity was interpolated from observed gravity values.
 JV6499
 JV6499;                    North         East    Units  Estimated Accuracy
 JV6499;SPC MD       -   151,780.      413,610.      MT  (+/- 180 meters Scaled)
 JV6499
 JV6499_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ405221(NAD 83)
 JV6499
 JV6499                          SUPERSEDED SURVEY CONTROL
 JV6499
 JV6499.No superseded survey control is available for this station.
 JV6499
 JV6499_MARKER: DB = BENCH MARK DISK
 JV6499_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6499_STAMPING: 4994
 JV6499_MARK LOGO: WSSC
 JV6499_PROJECTION: FLUSH
 JV6499_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6499_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6499+STABILITY: SURFACE MOTION
 JV6499_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6499+SATELLITE: SATELLITE OBSERVATIONS - January 09, 1991
 JV6499
 JV6499  HISTORY     - Date     Condition        Report By
 JV6499  HISTORY     - UNK      MONUMENTED       WSSC
 JV6499  HISTORY     - 19910109 GOOD             NGS
 JV6499  HISTORY     - 19980818 MARK NOT FOUND   NGS
 JV6499
 JV6499                          STATION DESCRIPTION
 JV6499
 JV6499'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6499'5.6 KM (3.5 MI) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION OF
 JV6499'U.S. HIGHWAY 1 IN BELTSVILLE, 20.4 M (66.9 FT) EAST OF THE CENTER OF
 JV6499'A DRIVEWAY LEADING TO THE CONSTRUCTION 86 ROWLEY TRAINING CENTER,
 JV6499'18.2 M (59.7 FT) SOUTH OF A FENCE CORNER, 8.3 M (27.2 FT) NORTH OF
 JV6499'AND LEVEL WITH THE ROAD CENTERLINE, 7.3 M (24.0 FT) EAST OF A UTILITY
 JV6499'POLE WITH 2 GUY WIRES, AND THE MONUMENT IS FLUSH WITH THE GROUND
 JV6499'SURFACE.
 JV6499
 JV6499                          STATION RECOVERY (1998)
 JV6499
 JV6499'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 JV6499'NOTE--MARK NOT FOUND DUE TO RECENT ROAD CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6500 ***********************************************************************
 JV6500  DESIGNATION -  4995
 JV6500  PID         -  JV6500
 JV6500  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6500  COUNTRY     -  US
 JV6500  USGS QUAD   -  LAUREL (2016)
 JV6500
 JV6500                         *CURRENT SURVEY CONTROL
 JV6500  ______________________________________________________________________
 JV6500* NAD 83(1986) POSITION- 39 01 49.     (N) 076 50 19.     (W)   SCALED
 JV6500* NAVD 88 ORTHO HEIGHT -    38.991 (meters)      127.92  (feet) ADJUSTED
 JV6500  ______________________________________________________________________
 JV6500  GEOID HEIGHT    -        -32.339 (meters)                     GEOID18
 JV6500  DYNAMIC HEIGHT  -         38.970 (meters)      127.85  (feet) COMP
 JV6500  MODELED GRAVITY -    980,092.3   (mgal)                       NAVD 88
 JV6500
 JV6500  VERT ORDER      -  SECOND    CLASS II
 JV6500
 JV6500.The horizontal coordinates were scaled from a map and have
 JV6500.an estimated accuracy of +/- 6 seconds.
 JV6500
 JV6500.The orthometric height was determined by differential leveling and
 JV6500.adjusted by the NATIONAL GEODETIC SURVEY
 JV6500.in June 1991.
 JV6500
 JV6500.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6500.GEOID18 height accuracy estimate available here.
 JV6500
 JV6500.Click photographs - Photos may exist for this station.
 JV6500
 JV6500.The dynamic height is computed by dividing the NAVD 88
 JV6500.geopotential number by the normal gravity value computed on the
 JV6500.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6500.degrees latitude (g = 980.6199 gals.).
 JV6500
 JV6500.The modeled gravity was interpolated from observed gravity values.
 JV6500
 JV6500;                    North         East    Units  Estimated Accuracy
 JV6500;SPC MD       -   151,380.      413,970.      MT  (+/- 180 meters Scaled)
 JV6500
 JV6500_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ408217(NAD 83)
 JV6500
 JV6500                          SUPERSEDED SURVEY CONTROL
 JV6500
 JV6500.No superseded survey control is available for this station.
 JV6500
 JV6500_MARKER: DB = BENCH MARK DISK
 JV6500_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6500_STAMPING: 4995
 JV6500_MARK LOGO: WSSC
 JV6500_PROJECTION: FLUSH
 JV6500_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6500_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6500+STABILITY: SURFACE MOTION
 JV6500_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6500+SATELLITE: SATELLITE OBSERVATIONS - January 09, 1991
 JV6500
 JV6500  HISTORY     - Date     Condition        Report By
 JV6500  HISTORY     - UNK      MONUMENTED       WSSC
 JV6500  HISTORY     - 19910109 GOOD             NGS
 JV6500  HISTORY     - 19980818 GOOD             NGS
 JV6500
 JV6500                          STATION DESCRIPTION
 JV6500
 JV6500'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6500'5.9 KM (3.7 MI) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION OF
 JV6500'U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 0.4 KM (0.2 MI) SOUTHEASTERLY
 JV6500'ALONG SPRINGFIELD ROAD, 15.0 M (49.2 FT) NORTHEAST OF A FENCE CORNER,
 JV6500'7.8 M (25.6 FT) SOUTHWEST OF AND LEVEL WITH THE ROAD CENTERLINE, 4.1
 JV6500'M (13.5 FT) EAST OF THE CENTER OF A DRIVEWAY, 2.1 M (6.9 FT) NORTH OF
 JV6500'A UTILITY POLE, AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
 JV6500
 JV6500                          STATION RECOVERY (1998)
 JV6500
 JV6500'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 JV6500'RECOVERED IN GOOD CONDITION.  NOTE--3.8 MILES EASTERLY ALONG POWDER
 JV6500'MILL ROAD FROM THE JUNCTION OF US HIGHWAY 1 IN BELTSVILLE, 0.5 MILE
 JV6500'(0.8 KM) SOUTHEASTERLY ALONG SPRINGFIELD ROAD, 49.8 FEET (15.2 M)
 JV6500'NORTHEAST OF A FENCE CORNER, 6.9 FEET (2.1 M) SOUTHWEST OF A UTILITY
 JV6500'POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AH5614 ***********************************************************************
 AH5614  DESIGNATION -  4996
 AH5614  PID         -  AH5614
 AH5614  STATE/COUNTY-  MD/PRINCE GEORGES
 AH5614  COUNTRY     -  US
 AH5614  USGS QUAD   -  LAUREL (2016)
 AH5614
 AH5614                         *CURRENT SURVEY CONTROL
 AH5614  ______________________________________________________________________
 AH5614* NAD 83(1986) POSITION- 39 01 18.     (N) 076 49 54.     (W)   SCALED
 AH5614* NAVD 88 ORTHO HEIGHT -    39.437 (meters)      129.39  (feet) ADJUSTED
 AH5614  ______________________________________________________________________
 AH5614  GEOID HEIGHT    -        -32.367 (meters)                     GEOID18
 AH5614  DYNAMIC HEIGHT  -         39.416 (meters)      129.32  (feet) COMP
 AH5614  MODELED GRAVITY -    980,090.9   (mgal)                       NAVD 88
 AH5614
 AH5614  VERT ORDER      -  SECOND    CLASS II
 AH5614
 AH5614.The horizontal coordinates were scaled from a map and have
 AH5614.an estimated accuracy of +/- 6 seconds.
 AH5614
 AH5614.The orthometric height was determined by differential leveling and
 AH5614.adjusted by the NATIONAL GEODETIC SURVEY
 AH5614.in April 1999.
 AH5614
 AH5614.Significant digits in the geoid height do not necessarily reflect accuracy.
 AH5614.GEOID18 height accuracy estimate available here.
 AH5614
 AH5614.Click photographs - Photos may exist for this station.
 AH5614
 AH5614.The dynamic height is computed by dividing the NAVD 88
 AH5614.geopotential number by the normal gravity value computed on the
 AH5614.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AH5614.degrees latitude (g = 980.6199 gals.).
 AH5614
 AH5614.The modeled gravity was interpolated from observed gravity values.
 AH5614
 AH5614;                    North         East    Units  Estimated Accuracy
 AH5614;SPC MD       -   150,430.      414,580.      MT  (+/- 180 meters Scaled)
 AH5614
 AH5614_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ414207(NAD 83)
 AH5614
 AH5614                          SUPERSEDED SURVEY CONTROL
 AH5614
 AH5614.No superseded survey control is available for this station.
 AH5614
 AH5614_MARKER: DD = SURVEY DISK
 AH5614_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AH5614_STAMPING: 4996
 AH5614_MARK LOGO: WSSC
 AH5614_PROJECTION: FLUSH
 AH5614_MAGNETIC: N = NO MAGNETIC MATERIAL
 AH5614_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AH5614+STABILITY: SURFACE MOTION
 AH5614
 AH5614  HISTORY     - Date     Condition        Report By
 AH5614  HISTORY     - UNK      MONUMENTED       NONE
 AH5614  HISTORY     - 19980818 GOOD             NGS
 AH5614
 AH5614                          STATION DESCRIPTION
 AH5614
 AH5614'DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 AH5614'3.9 MILES (6.3 KM) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 AH5614'OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 1.56 KM (0.95 MI)
 AH5614'SOUTHEASTERLY ALONG SPRINGFIELD ROAD TO THE MARK ON THE RIGHT AT A THE
 AH5614'BOTTOM OF A HILL AT A SMALL CURVE, 7.0 METERS (23.0 FT) WEST OF THE
 AH5614'CENTERLINE OF SPRINGFIELD ROAD, 16.3 METERS (53.5 FT) SOUTHWEST OF THE
 AH5614'CENTERLINE OF A DIRT ROAD LEADING NORTHWEST, 1.25 METERS (4.1 FT)
 AH5614'SOUTH-SOUTHEAST OF A METAL FENCE POST, 17.4 (57.0 FT) SOUTH-SOUTHEAST
 AH5614'OF A RED IRON GATE POST, AND 0.22 METER (0.72 FT) EAST OF A WSSC
 AH5614'CARSONITE WITNESS SIGN. BENCH MARK IS FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0419 ***********************************************************************
 HV0419  DESIGNATION -  5
 HV0419  PID         -  HV0419
 HV0419  STATE/COUNTY-  MD/ST MARYS
 HV0419  COUNTRY     -  US
 HV0419  USGS QUAD   -  POINT LOOKOUT (2016)
 HV0419
 HV0419                         *CURRENT SURVEY CONTROL
 HV0419  ______________________________________________________________________
 HV0419* NAD 83(1986) POSITION- 38 02 52.     (N) 076 19 22.     (W)   SCALED
 HV0419* NAVD 88 ORTHO HEIGHT -     2.318 (meters)        7.61  (feet) ADJUSTED
 HV0419  ______________________________________________________________________
 HV0419  GEOID HEIGHT    -        -35.320 (meters)                     GEOID18
 HV0419  DYNAMIC HEIGHT  -          2.317 (meters)        7.60  (feet) COMP
 HV0419  MODELED GRAVITY -    979,970.3   (mgal)                       NAVD 88
 HV0419
 HV0419  VERT ORDER      -  FIRST     CLASS II
 HV0419
 HV0419.The horizontal coordinates were scaled from a map and have
 HV0419.an estimated accuracy of +/- 6 seconds.
 HV0419
 HV0419.The orthometric height was determined by differential leveling and
 HV0419.adjusted by the NATIONAL GEODETIC SURVEY
 HV0419.in June 1991.
 HV0419
 HV0419.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0419.GEOID18 height accuracy estimate available here.
 HV0419
 HV0419.Click photographs - Photos may exist for this station.
 HV0419
 HV0419.The dynamic height is computed by dividing the NAVD 88
 HV0419.geopotential number by the normal gravity value computed on the
 HV0419.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0419.degrees latitude (g = 980.6199 gals.).
 HV0419
 HV0419.The modeled gravity was interpolated from observed gravity values.
 HV0419
 HV0419;                    North         East    Units  Estimated Accuracy
 HV0419;SPC MD       -    42,530.      459,450.      MT  (+/- 180 meters Scaled)
 HV0419
 HV0419_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH839119(NAD 83)
 HV0419
 HV0419                          SUPERSEDED SURVEY CONTROL
 HV0419
 HV0419  NGVD 29 (11/26/84)    2.612  (m)            8.57   (f) ADJUSTED    1 2
 HV0419
 HV0419.Superseded values are not recommended for survey control.
 HV0419
 HV0419.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0419.See file dsdata.pdf to determine how the superseded data were derived.
 HV0419
 HV0419_MARKER: DD = SURVEY DISK
 HV0419_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV0419_MARK LOGO: CGS+SS
 HV0419_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0419
 HV0419  HISTORY     - Date     Condition        Report By
 HV0419  HISTORY     - 1934     MONUMENTED       MDGS
 HV0419  HISTORY     - 1941     GOOD             CGS
 HV0419
 HV0419                          STATION DESCRIPTION
 HV0419
 HV0419'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0419'AT POINT LOOKOUT.
 HV0419'AT POINT LOOKOUT, SAINT MARYS COUNTY, AT THE INTERSECTION OF
 HV0419'STATE HIGHWAY 5 AND FIFTEENTH STREET, 41 FEET NORTH OF THE
 HV0419'CENTER LINE OF FIFTEENTH STREET, 40 FEET EAST OF THE CENTER LINE
 HV0419'OF THE HIGHWAY, AND 1 FOOT WEST OF A WHITE WOODEN POST STENCILED
 HV0419'U.S.B.M.  A STATE SURVEY STANDARD DISK, SET IN THE TOP OF A
 HV0419'CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0556 ***********************************************************************
 HU0556  DESIGNATION -  5
 HU0556  PID         -  HU0556
 HU0556  STATE/COUNTY-  MD/WICOMICO
 HU0556  COUNTRY     -  US
 HU0556  USGS QUAD   -  WETIPQUIN (2016)
 HU0556
 HU0556                         *CURRENT SURVEY CONTROL
 HU0556  ______________________________________________________________________
 HU0556* NAD 83(1986) POSITION- 38 16 07.0    (N) 075 47 26.4    (W)   HD_HELD2
 HU0556* NAVD 88 ORTHO HEIGHT -     1.076 (meters)        3.53  (feet) ADJUSTED
 HU0556  ______________________________________________________________________
 HU0556  GEOID HEIGHT    -        -35.841 (meters)                     GEOID18
 HU0556  DYNAMIC HEIGHT  -          1.076 (meters)        3.53  (feet) COMP
 HU0556  MODELED GRAVITY -    979,991.9   (mgal)                       NAVD 88
 HU0556
 HU0556  VERT ORDER      -  FIRST     CLASS I
 HU0556
 HU0556.The horizontal coordinates were established by autonomous hand held GPS
 HU0556.observations and have an estimated accuracy of +/- 10 meters.
 HU0556
 HU0556.The orthometric height was determined by differential leveling and
 HU0556.adjusted by the NATIONAL GEODETIC SURVEY
 HU0556.in June 1991.
 HU0556
 HU0556.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0556.GEOID18 height accuracy estimate available here.
 HU0556
 HU0556.Click photographs - Photos may exist for this station.
 HU0556
 HU0556.The dynamic height is computed by dividing the NAVD 88
 HU0556.geopotential number by the normal gravity value computed on the
 HU0556.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0556.degrees latitude (g = 980.6199 gals.).
 HU0556
 HU0556.The modeled gravity was interpolated from observed gravity values.
 HU0556
 HU0556;                    North         East    Units  Estimated Accuracy
 HU0556;SPC MD       -    67,520.      505,828.      MT  (+/- 10 meters HH2 GPS)
 HU0556
 HU0556_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3083535914(NAD 83)
 HU0556
 HU0556                          SUPERSEDED SURVEY CONTROL
 HU0556
 HU0556  NGVD 29 (06/12/91)    1.330  (m)            4.36   (f) ADJUSTED    1 1
 HU0556  NGVD 29 (??/??/87)    1.330  (m)            4.36   (f) SUPERSEDED  1 1
 HU0556
 HU0556.Superseded values are not recommended for survey control.
 HU0556
 HU0556.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0556.See file dsdata.pdf to determine how the superseded data were derived.
 HU0556
 HU0556_MARKER: DB = BENCH MARK DISK
 HU0556_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HU0556_SP_SET: FOUNDATION WALL
 HU0556_STAMPING: MD 5 BALT
 HU0556_MARK LOGO: USGS
 HU0556_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0556+STABILITY: SURFACE MOTION
 HU0556_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0556+SATELLITE: SATELLITE OBSERVATIONS - April 25, 2019
 HU0556
 HU0556  HISTORY     - Date     Condition        Report By
 HU0556  HISTORY     - 1900     MONUMENTED       USGS
 HU0556  HISTORY     - 1963     GOOD             CGS
 HU0556  HISTORY     - 19900308 GOOD             NGS
 HU0556  HISTORY     - 20010226 GOOD             USPSQD
 HU0556  HISTORY     - 20190425 GOOD             PROFLN
 HU0556
 HU0556                          STATION DESCRIPTION
 HU0556
 HU0556'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0556'AT WHITEHAVEN.
 HU0556'AT WHITEHAVEN, ABOUT 0.1 MILE WEST ALONG A BLACK TOP ROAD FROM THE
 HU0556'FERRY LANDING, AT THE JUNCTION OF A BLACK TOP ROAD LEADING NORTH,
 HU0556'SET VERTICALLY IN THE WEST FACE OF THE BRICK FOUNDATION OF A
 HU0556'LARGE TWO STORY FRAME HOUSE NOW (1963) OWNED BY MR. C. MELVIN
 HU0556'CADDELL, 11 FEET EAST OF CENTER LINE OF ROAD LEADING NORTH, 17.6
 HU0556'FEET SOUTH OF NORTHWEST CORNER OF FOUNDATION, AND ABOUT 1 FOOT
 HU0556'ABOVE LEVEL OF ROAD.
 HU0556
 HU0556                          STATION RECOVERY (1990)
 HU0556
 HU0556'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0556'IN WHITEHAVEN, AT THE INTERSECTION OF RIVER AND CHURCH STREETS, SET
 HU0556'VERTICALLY IN THE WEST FACE OF THE BRICK FOUNDATION OF A 2 STORY
 HU0556'FRAME HOUSE, 19.0 M (62.34 FT) NORTH OF THE CENTER OF RIVER STREET,
 HU0556'5.4 M (17.72 FT) SOUTH OF THE NORTHWEST CORNER OF THE HOUSE, 3.4 M
 HU0556'(11.15 FT) EAST OF THE CENTER OF CHURCH STREET, AND 0.3 M (0.98 FT)
 HU0556'ABOVE THE LEVEL OF THE STREETS.
 HU0556
 HU0556                          STATION RECOVERY (2001)
 HU0556
 HU0556'RECOVERY NOTE BY US POWER SQUADRON 2001 (GVS)
 HU0556'RECOVERED IN GOOD CONDITION.
 HU0556
 HU0556                          STATION RECOVERY (2019)
 HU0556
 HU0556'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU0556'RECOVERED AS DESCRIBED.  THE HOUSE IS FOR SALE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7288 ***********************************************************************
 HV7288  DESIGNATION -  5
 HV7288  PID         -  HV7288
 HV7288  STATE/COUNTY-  MD/CALVERT
 HV7288  COUNTRY     -  US
 HV7288  USGS QUAD   -  NORTH BEACH (2016)
 HV7288
 HV7288                         *CURRENT SURVEY CONTROL
 HV7288  ______________________________________________________________________
 HV7288* NAD 83(1993) POSITION- 38 39 25.80345(N) 076 31 41.59712(W)   ADJUSTED
 HV7288* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 HV7288  ______________________________________________________________________
 HV7288  GEOID HEIGHT    -        -33.768 (meters)                     GEOID18
 HV7288  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 HV7288  HORZ ORDER      -  THIRD
 HV7288
 HV7288.The horizontal coordinates were established by classical geodetic methods
 HV7288.and adjusted by the National Geodetic Survey in November 1994.
 HV7288
 HV7288.The orthometric height was scaled from a topographic map.
 HV7288
 HV7288.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7288.GEOID18 height accuracy estimate available here.
 HV7288
 HV7288.Click photographs - Photos may exist for this station.
 HV7288
 HV7288.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7288
 HV7288. The following values were computed from the NAD 83(1993) position.
 HV7288
 HV7288;                    North         East     Units Scale Factor Converg.
 HV7288;SPC MD       -   110,055.574   441,063.022   MT  0.99995709   +0 17 46.0
 HV7288;SPC MD       -   361,074.00  1,447,054.26   sFT  0.99995709   +0 17 46.0
 HV7288;UTM  18      - 4,279,841.103   367,028.912   MT  0.99981774   -0 57 17.1
 HV7288
 HV7288!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7288!SPC MD       -   1.00000000  x   0.99995709  =   0.99995709
 HV7288!UTM  18      -   1.00000000  x   0.99981774  =   0.99981774
 HV7288
 HV7288_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6702879841(NAD 83)
 HV7288
 HV7288                          SUPERSEDED SURVEY CONTROL
 HV7288
 HV7288  NAD 83(1986)-  38 39 25.80117(N)    076 31 41.61080(W) AD(       ) 3
 HV7288  NAD 27      -  38 39 25.36200(N)    076 31 42.76900(W) AD(       ) 3
 HV7288
 HV7288.Superseded values are not recommended for survey control.
 HV7288
 HV7288.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7288.See file dsdata.pdf to determine how the superseded data were derived.
 HV7288
 HV7288_MARKER: DD = SURVEY DISK
 HV7288_SETTING: 0 = UNSPECIFIED SETTING
 HV7288_STAMPING: NO 5 1944
 HV7288
 HV7288  HISTORY     - Date     Condition        Report By
 HV7288  HISTORY     - 1944     MONUMENTED       CGS
 HV7288  HISTORY     - 1960     GOOD             CGS
 HV7288
 HV7288                          STATION DESCRIPTION
 HV7288
 HV7288'DESCRIBED BY COAST AND GEODETIC SURVEY 1944 (TBR)
 HV7288'STATION IS A BRONZE DISK STAMPED NO 5 1944.  IT IS ON SE CORNER
 HV7288'STEPS AT E ENTRANCE TO BUILDING 2 AT NAVAL RESEARCH LABORATORY,
 HV7288'CHESAPEAKE BEACH.
 HV7288'
 HV7288'HALF-TIDE LEVEL (APPROXIMATE SEA LEVEL) ELEVATION 104.46 FEET.
 HV7288
 HV7288                          STATION RECOVERY (1960)
 HV7288
 HV7288'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7288'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6038 ***********************************************************************
 DN6038  DESIGNATION -  5
 DN6038  PID         -  DN6038
 DN6038  STATE/COUNTY-  MD/CARROLL
 DN6038  COUNTRY     -  US
 DN6038  USGS QUAD   -  WESTMINSTER (2016)
 DN6038
 DN6038                         *CURRENT SURVEY CONTROL
 DN6038  ______________________________________________________________________
 DN6038* NAD 83(1986) POSITION- 39 36 23.     (N) 076 54 55.     (W)   SCALED
 DN6038* NAVD 88 ORTHO HEIGHT -   235.498 (meters)      772.63  (feet) ADJUSTED
 DN6038  ______________________________________________________________________
 DN6038  GEOID HEIGHT    -        -32.206 (meters)                     GEOID18
 DN6038  DYNAMIC HEIGHT  -        235.377 (meters)      772.23  (feet) COMP
 DN6038  MODELED GRAVITY -    980,106.3   (mgal)                       NAVD 88
 DN6038
 DN6038  VERT ORDER      -  SECOND    CLASS II
 DN6038
 DN6038.The horizontal coordinates were scaled from a map and have
 DN6038.an estimated accuracy of +/- 6 seconds.
 DN6038
 DN6038.The orthometric height was determined by differential leveling and
 DN6038.adjusted by the NATIONAL GEODETIC SURVEY
 DN6038.in June 2012.
 DN6038
 DN6038.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6038.GEOID18 height accuracy estimate available here.
 DN6038
 DN6038.Click photographs - Photos may exist for this station.
 DN6038
 DN6038.The dynamic height is computed by dividing the NAVD 88
 DN6038.geopotential number by the normal gravity value computed on the
 DN6038.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6038.degrees latitude (g = 980.6199 gals.).
 DN6038
 DN6038.The modeled gravity was interpolated from observed gravity values.
 DN6038
 DN6038;                    North         East    Units  Estimated Accuracy
 DN6038;SPC MD       -   215,330.      407,280.      MT  (+/- 180 meters Scaled)
 DN6038
 DN6038_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ355858(NAD 83)
 DN6038
 DN6038                          SUPERSEDED SURVEY CONTROL
 DN6038
 DN6038.No superseded survey control is available for this station.
 DN6038
 DN6038_MARKER: B = BOLT
 DN6038_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DN6038_SP_SET: DRAINAGE INLET
 DN6038_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DN6038_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DN6038
 DN6038  HISTORY     - Date     Condition        Report By
 DN6038  HISTORY     - 1982     MONUMENTED       MDSHA
 DN6038  HISTORY     - 1996     GOOD             MDSHA
 DN6038
 DN6038                          STATION DESCRIPTION
 DN6038
 DN6038'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1996 (SFK)
 DN6038'THE MARK IS LOCATED ABOUT 4.8 MI (7.7 KM) EAST-NORTHEAST OF
 DN6038'WESTMINSTER, 4.1 MI (6.6 KM) SOUTH-SOUTHWEST OF MANCHESTER AND 3.5 MI
 DN6038'(5.6 KM) WEST OF HAMPSTEAD.
 DN6038'
 DN6038'TO REACH THE MARK FROM THE INTERSECTION OF MAIN STREET AND MARYLAND
 DN6038'HIGHWAY 27 IN WESTMINSTER, PROCEED NORTHEAST ON MARYLAND HIGHWAY 27
 DN6038'FOR 3.2 MI (5.1 KM) TO MARYLAND HIGHWAY 482.  BEAR RIGHT AND PROCEED
 DN6038'NORTHEAST ON MARYLAND HIGHWAY 482 FOR 1.85 MI (3.0 KM) TO GABLEHAMMER
 DN6038'ROAD AND THE MARK ON THE RIGHT.
 DN6038'
 DN6038'IT IS THE NORTHWESTERN MOST BOLT SECURING A 3 FT (0.9 M) BY 7 FT (2.1
 DN6038'M) METAL DROP INLET GRATE, 20.5 FT (6.2 M) SOUTHEAST OF THE CENTER OF
 DN6038'MARYLAND HIGHWAY 482, 39.0 FT (11.9 M) NORTHWEST OF A POWER POLE
 DN6038'NUMBERED 346229, 69.0 FT (21.0 M) NORTHEAST OF THE CENTERLINE OF THE
 DN6038'MACADAM DRIVEWAY TO HOUSE NUMBER 2229 AND 92.5 FT (28.2 M) NORTHEAST
 DN6038'OF THE CENTERLINE OF GABLEHAMMER ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7825 ***********************************************************************
 DR7825  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7825  DESIGNATION -  5
 DR7825  PID         -  DR7825
 DR7825  STATE/COUNTY-  MD/QUEEN ANNES
 DR7825  COUNTRY     -  US
 DR7825  USGS QUAD   -  KENT ISLAND (2016)
 DR7825
 DR7825                         *CURRENT SURVEY CONTROL
 DR7825  ______________________________________________________________________
 DR7825* NAD 83(2011) POSITION- 38 59 51.97256(N) 076 18 41.99704(W)   ADJUSTED
 DR7825* NAD 83(2011) ELLIP HT-   -28.570 (meters)        (02/02/22)   ADJUSTED
 DR7825* NAD 83(2011) EPOCH   -  2010.00
 DR7825* NAVD 88 ORTHO HEIGHT -     4.98  (meters)       16.3   (feet) GPS OBS
 DR7825  ______________________________________________________________________
 DR7825  GEOID HEIGHT    -        -33.554 (meters)                     GEOID18
 DR7825  NAD 83(2011) X  -  1,174,555.012 (meters)                     COMP
 DR7825  NAD 83(2011) Y  - -4,822,485.335 (meters)                     COMP
 DR7825  NAD 83(2011) Z  -  3,992,106.660 (meters)                     COMP
 DR7825  LAPLACE CORR    -         -2.36  (seconds)                    DEFLEC18
 DR7825
 DR7825  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7825  Standards:
 DR7825         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7825            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7825  -------------------------------------------------------------------
 DR7825  NETWORK    0.73   1.71           0.32   0.27   0.87     -0.13062350
 DR7825  -------------------------------------------------------------------
 DR7825  Click here for local accuracies and other accuracy information.
 DR7825
 DR7825.The horizontal coordinates were established by GPS observations
 DR7825.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7825
 DR7825.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7825.been affixed to the stable North American tectonic plate. See 
 DR7825.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7825
 DR7825.The horizontal coordinates are valid at the epoch date displayed above
 DR7825.which is a decimal equivalence of Year/Month/Day.
 DR7825
 DR7825.The orthometric height was determined by GPS observations and a
 DR7825.high-resolution geoid model using precise GPS observation and
 DR7825.processing techniques.
 DR7825
 DR7825.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7825.GEOID18 height accuracy estimate available here.
 DR7825
 DR7825.Click photographs - Photos may exist for this station.
 DR7825
 DR7825.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7825
 DR7825.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7825
 DR7825.The ellipsoidal height was determined by GPS observations
 DR7825.and is referenced to NAD 83.
 DR7825
 DR7825. The following values were computed from the NAD 83(2011) position.
 DR7825
 DR7825;                    North         East     Units Scale Factor Converg.
 DR7825;SPC MD       -   147,983.471   459,626.363   MT  0.99995211   +0 25 55.3
 DR7825;SPC MD       -   485,509.10  1,507,957.49   sFT  0.99995211   +0 25 55.3
 DR7825;UTM  18      - 4,317,347.383   386,414.903   MT  0.99975886   -0 49 31.8
 DR7825
 DR7825!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7825!SPC MD       -   1.00000448  x   0.99995211  =   0.99995659
 DR7825!UTM  18      -   1.00000448  x   0.99975886  =   0.99976334
 DR7825
 DR7825_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8641417347(NAD 83)
 DR7825
 DR7825                          SUPERSEDED SURVEY CONTROL
 DR7825
 DR7825.No superseded survey control is available for this station.
 DR7825
 DR7825_MARKER: DD = SURVEY DISK
 DR7825_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7825_STAMPING: 5
 DR7825_MARK LOGO: MD-035
 DR7825_PROJECTION: RECESSED 9 CENTIMETERS
 DR7825_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7825+STABILITY: SURFACE MOTION
 DR7825_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7825+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7825
 DR7825  HISTORY     - Date     Condition        Report By
 DR7825  HISTORY     - UNK      MONUMENTED       MD-035
 DR7825  HISTORY     - 20210309 GOOD             MDSHA
 DR7825
 DR7825                          STATION DESCRIPTION
 DR7825
 DR7825'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7825'THE MARK IS LOCATED ABOUT 2.0 MI (3.2 KM) NORTHWEST OF CHESTER, 1.2 MI
 DR7825'(1.9 KM) NORTH OF STEVENSVILLE AND IN THE TOWN OF CLOVERFIELDS, MD.
 DR7825'
 DR7825'TO REACH FROM THE US 50/MD ROUTE 8 INTERCHANGE IN STEVENSVILLE, MD, GO
 DR7825'NORTH ON MD ROUTE 8 FOR 0.9 MI (1.4 KM) TO MD ROUTE 18 (LOVE POINT
 DR7825'ROAD).  CONTINUE NORTH ON MD ROUTE 18 FOR 0.7 MI (1.1 KM) TO THE
 DR7825'INTERSECTION OF PRICE FARM ROAD ON THE LEFT AND THE MARK ON THE RIGHT.
 DR7825'THE MARK IS 52.7 FT (16.1 M) SOUTH OF THE EDGE OF THE DRIVEWAY OF 1014
 DR7825'LOVE POINT ROAD, 51.1 FT (15.6 M) SOUTHEAST OF DPL POWER LINE POLE
 DR7825'NUMBERED 26761-16380, 34.3 FT (10.5 M) SOUTH OF THE SOUTHEAST CORNER
 DR7825'OF A 1 FT (0.3 M) WIDE CONCRETE HEADWALL, 26.5 FT (8.1 M) EAST OF THE
 DR7825'CENTERLINE OF STATE ROUTE 18 (LOVE POINT ROAD), 17.5 FT (5.3 M) NORTH
 DR7825'OF THE NORTH EDGE OF THE DRIVEWAY OF 1012 LOVE POINT ROAD AND SET IN
 DR7825'THE TOP OF A 12-IN (30 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3582 ***********************************************************************
 JU3582  DESIGNATION -  5 2
 JU3582  PID         -  JU3582
 JU3582  STATE/COUNTY-  MD/CECIL
 JU3582  COUNTRY     -  US
 JU3582  USGS QUAD   -  EARLEVILLE (2016)
 JU3582
 JU3582                         *CURRENT SURVEY CONTROL
 JU3582  ______________________________________________________________________
 JU3582* NAD 83(1991) POSITION- 39 29 17.45578(N) 075 55 28.88449(W)   ADJUSTED
 JU3582* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3582  ______________________________________________________________________
 JU3582  GEOID HEIGHT    -        -33.340 (meters)                     GEOID18
 JU3582  LAPLACE CORR    -         -0.80  (seconds)                    DEFLEC18
 JU3582  HORZ ORDER      -  THIRD
 JU3582
 JU3582.The horizontal coordinates were established by classical geodetic methods
 JU3582.and adjusted by the National Geodetic Survey in January 1992.
 JU3582
 JU3582.The orthometric height was scaled from a topographic map.
 JU3582
 JU3582.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3582.GEOID18 height accuracy estimate available here.
 JU3582
 JU3582.Click photographs - Photos may exist for this station.
 JU3582
 JU3582.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3582
 JU3582. The following values were computed from the NAD 83(1991) position.
 JU3582
 JU3582;                    North         East     Units Scale Factor Converg.
 JU3582;SPC MD       -   202,747.653   492,505.238   MT  1.00000690   +0 40 29.6
 JU3582;SPC MD       -   665,181.26  1,615,827.60   sFT  1.00000690   +0 40 29.6
 JU3582;UTM  18      - 4,371,361.026   420,481.924   MT  0.99967785   -0 35 17.0
 JU3582
 JU3582!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3582!SPC MD       -   1.00000527  x   1.00000690  =   1.00001217
 JU3582!UTM  18      -   1.00000527  x   0.99967785  =   0.99968312
 JU3582
 JU3582:                Primary Azimuth Mark                     Grid Az
 JU3582:SPC MD       -  E                                        353 01 41.7
 JU3582:UTM  18      -  E                                        354 17 28.3
 JU3582
 JU3582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2048171361(NAD 83)
 JU3582
 JU3582|---------------------------------------------------------------------|
 JU3582| PID    Reference Object                     Distance      Geod. Az  |
 JU3582|                                                           dddmmss.s |
 JU3582| JU3589 GROVE NECK CHAN N FRONT RNG LT      APPROX. 1.3 KM 2915250.2 |
 JU3582| JU3581 GROVE NECK CHAN N REAR RNG LT       APPROX. 1.3 KM 3302525.2 |
 JU3582| JU3952 TOWN POINT CHAN W REAR RNG LT       APPROX. 1.7 KM 3331743.4 |
 JU3582| JU3953 TOWN POINT CHAN W FRONT RNG LT      APPROX. 1.7 KM 3402053.8 |
 JU3582| JU3938 E                                   APPROX. 1.9 KM 3534211.3 |
 JU3582|---------------------------------------------------------------------|
 JU3582
 JU3582                          SUPERSEDED SURVEY CONTROL
 JU3582
 JU3582  NAD 83(1986)-  39 29 17.44838(N)    075 55 28.89137(W) AD(       ) 3
 JU3582  NAD 27      -  39 29 17.05000(N)    075 55 30.10600(W) AD(       ) 3
 JU3582
 JU3582.Superseded values are not recommended for survey control.
 JU3582
 JU3582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3582.See file dsdata.pdf to determine how the superseded data were derived.
 JU3582
 JU3582_MARKER: DD = SURVEY DISK
 JU3582_SETTING: 66 = SET IN ROCK OUTCROP
 JU3582_STAMPING: 5-2
 JU3582_MARK LOGO: USACE
 JU3582_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JU3582+STABILITY: POSITION/ELEVATION WELL
 JU3582
 JU3582  HISTORY     - Date     Condition        Report By
 JU3582  HISTORY     - 1937     MONUMENTED       USACE
 JU3582  HISTORY     - 1938     GOOD             CGS
 JU3582  HISTORY     - 1938     GOOD             CGS
 JU3582
 JU3582                          STATION DESCRIPTION
 JU3582
 JU3582'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3582'LOCATED ON THE S SIDE OF THE ELK RIVER, N OF THE MOUTH OF THE
 JU3582'BOHEMIA RIVER AND ON TOWN POINT.  IT IS LOCATED ON THE
 JU3582'EXTREME POINT 4.0 METERS INSHORE TO THE S FROM THE HIGH WATER,
 JU3582'4.7 METERS INSHORE TO THE E FROM THE HIGH WATER, AND 2.7 METERS
 JU3582'W FROM AN OLD ROCK BULKHEAD.  THE STATION IS MARKED BY A
 JU3582'STANDARD U.S.E.D. DISK SET IN THE TOP OF A LARGE FLAT ROCK.
 JU3582'
 JU3582'THIS IS PROBABLY 5-2 (U.S.E.).
 JU3582
 JU3582                          STATION RECOVERY (1938)
 JU3582
 JU3582'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3582'STATION MARK RECOVERED IN GOOD CONDITION.  STATION IS LOCATED
 JU3582'6-3/4 MILES SW OF CHESAPEAKE CITY ON THE E SIDE OF ELK RIVER
 JU3582'ON TOWN POINT NECK ON A POINT OF LAND BETWEEN THE ELK RIVER
 JU3582'AND THE BOHEMIA RIVER CALLED TOWN POINT.
 JU3582'
 JU3582'STATION MARK IS ON A ROCK OUTCROP, 4.0 METERS S OF HIGH-WATER
 JU3582'LINE, 4.7 METERS E OF HIGH-WATER LINE AND 2.7 METERS W OF OLD
 JU3582'STONE BULKHEAD AT THE FOOT OF A 15-FOOT BLUFF.  MARK IS A
 JU3582'STANDARD U.S.E.D. DISK CEMENTED IN A HOLE IN THE ROCK OUTCROP.
 JU3582'
 JU3582'AN IRON PIPE (PROBABLY U.S.E.D. 5) DRIVEN INTO THE ROCK IS
 JU3582'5.928 METERS SW OF STATION MARK.
 JU3582'
 JU3582'TO REACH THE STATION FROM THE CANAL BRIDGE IN CHESAPEAKE CITY,
 JU3582'FOLLOW U.S. HIGHWAY 213 S 3.8 MILES.  TAKE RIGHT FORK AT SIGN
 JU3582'TOWN POINT.  GO 4.1 MILES TO THE END OF THE MACADAM ROAD,
 JU3582'CONTINUE ON DIRT ROAD.  GO THROUGH LEFT OF TWO GATES AND FOLLOW
 JU3582'LANE 0.5 MILE TO HOUSE.  THE STATION IS 170 METERS WNW OF THE
 JU3582'HOUSE.
 JU3582
 JU3582                          STATION RECOVERY (1938)
 JU3582
 JU3582'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JU3582'STATION WAS RECOVERED IN GOOD CONDITION.  IT IS STAMPED 5-2.  NO
 JU3582'REFERENCE MARKS WERE FOUND.  THE PRESENT DESCRIPTION IS
 JU3582'ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2166 ***********************************************************************
 HU2166  DESIGNATION -  5 KEM
 HU2166  PID         -  HU2166
 HU2166  STATE/COUNTY-  MD/WICOMICO
 HU2166  COUNTRY     -  US
 HU2166  USGS QUAD   -  WETIPQUIN (2016)
 HU2166
 HU2166                         *CURRENT SURVEY CONTROL
 HU2166  ______________________________________________________________________
 HU2166* NAD 83(1986) POSITION- 38 22 28.9    (N) 075 46 24.0    (W)   HD_HELD2
 HU2166* NAVD 88 ORTHO HEIGHT -     2.493 (meters)        8.18  (feet) ADJUSTED
 HU2166  ______________________________________________________________________
 HU2166  GEOID HEIGHT    -        -35.677 (meters)                     GEOID18
 HU2166  DYNAMIC HEIGHT  -          2.492 (meters)        8.18  (feet) COMP
 HU2166  MODELED GRAVITY -    980,006.9   (mgal)                       NAVD 88
 HU2166
 HU2166  VERT ORDER      -  SECOND    CLASS I
 HU2166
 HU2166.The horizontal coordinates were established by autonomous hand held GPS
 HU2166.observations and have an estimated accuracy of +/- 10 meters.
 HU2166
 HU2166.The orthometric height was determined by differential leveling and
 HU2166.adjusted by the NATIONAL GEODETIC SURVEY
 HU2166.in June 1991.
 HU2166
 HU2166.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2166.GEOID18 height accuracy estimate available here.
 HU2166
 HU2166.Click photographs - Photos may exist for this station.
 HU2166
 HU2166.The dynamic height is computed by dividing the NAVD 88
 HU2166.geopotential number by the normal gravity value computed on the
 HU2166.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2166.degrees latitude (g = 980.6199 gals.).
 HU2166
 HU2166.The modeled gravity was interpolated from observed gravity values.
 HU2166
 HU2166;                    North         East    Units  Estimated Accuracy
 HU2166;SPC MD       -    79,314.      507,186.      MT  (+/- 10 meters HH2 GPS)
 HU2166
 HU2166_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3244947672(NAD 83)
 HU2166
 HU2166                          SUPERSEDED SURVEY CONTROL
 HU2166
 HU2166  NGVD 29 (06/12/91)    2.743  (m)            9.00   (f) ADJUSTED    2 1
 HU2166
 HU2166.Superseded values are not recommended for survey control.
 HU2166
 HU2166.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2166.See file dsdata.pdf to determine how the superseded data were derived.
 HU2166
 HU2166_MARKER: DB = BENCH MARK DISK
 HU2166_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2166_STAMPING: 5 KEM 1977
 HU2166_MARK LOGO: USGS
 HU2166_PROJECTION: PROJECTING 3 CENTIMETERS
 HU2166_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2166_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2166+STABILITY: SURFACE MOTION
 HU2166_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2166+SATELLITE: SATELLITE OBSERVATIONS - April 23, 2019
 HU2166
 HU2166  HISTORY     - Date     Condition        Report By
 HU2166  HISTORY     - 1977     MONUMENTED       USGS
 HU2166  HISTORY     - 19900308 GOOD             NGS
 HU2166  HISTORY     - 20190423 GOOD             PROFLN
 HU2166
 HU2166                          STATION DESCRIPTION
 HU2166
 HU2166'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2166'2.8 KM (1.74 MI) WESTERLY ALONG CHERRY WALK ROAD FROM ITS JUNCTION
 HU2166'WITH STATE HIGHWAY 347 IN QUANTICO, 8.8 M (28.87 FT) SOUTH OF THE
 HU2166'CENTER OF THE ROAD, 6.5 M (21.33 FT) EAST OF THE MOST WESTERLY 1 OF 2
 HU2166'DRIVEWAYS, 0.6 M (1.97 FT) SOUTH OF UTILITY POLE NUMBER Y 119 26 33 T
 HU2166'31, 0.2 M (0.66 FT) BELOW THE LEVEL OF THE ROAD, AND IN A CONCRETE
 HU2166'MONUMENT THAT PROJECTS 0.1 M (0.33 FT) ABOVE THE GROUND SURFACE.
 HU2166
 HU2166                          STATION RECOVERY (2019)
 HU2166
 HU2166'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2166'THE MARK IS 12.5 FT (3.8 M) SOUTHEAST OF THE EASTERLY END OF AN 18
 HU2166'INCH CORRUGATED METAL PIPE UNDER THE DRIVEWAY AND 6 FT (1.8 M)
 HU2166'SOUTHERLY FROM A DITCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1199 ***********************************************************************
 JV1199  DESIGNATION -  5 PRR
 JV1199  PID         -  JV1199
 JV1199  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1199  COUNTRY     -  US
 JV1199  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1199
 JV1199                         *CURRENT SURVEY CONTROL
 JV1199  ______________________________________________________________________
 JV1199* NAD 83(1986) POSITION- 39 20 48.     (N) 076 38 53.     (W)   SCALED
 JV1199* NAVD 88 ORTHO HEIGHT -    55.031 (meters)      180.55  (feet) ADJUSTED
 JV1199  ______________________________________________________________________
 JV1199  GEOID HEIGHT    -        -32.520 (meters)                     GEOID18
 JV1199  DYNAMIC HEIGHT  -         55.002 (meters)      180.45  (feet) COMP
 JV1199  MODELED GRAVITY -    980,102.5   (mgal)                       NAVD 88
 JV1199
 JV1199  VERT ORDER      -  SECOND    CLASS 0
 JV1199
 JV1199.The horizontal coordinates were scaled from a map and have
 JV1199.an estimated accuracy of +/- 6 seconds.
 JV1199
 JV1199.The orthometric height was determined by differential leveling and
 JV1199.adjusted by the NATIONAL GEODETIC SURVEY
 JV1199.in June 1991.
 JV1199
 JV1199.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1199.GEOID18 height accuracy estimate available here.
 JV1199
 JV1199.Click photographs - Photos may exist for this station.
 JV1199
 JV1199.The dynamic height is computed by dividing the NAVD 88
 JV1199.geopotential number by the normal gravity value computed on the
 JV1199.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1199.degrees latitude (g = 980.6199 gals.).
 JV1199
 JV1199.The modeled gravity was interpolated from observed gravity values.
 JV1199
 JV1199;                    North         East    Units  Estimated Accuracy
 JV1199;SPC MD       -   186,550.      430,340.      MT  (+/- 180 meters Scaled)
 JV1199
 JV1199_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ579565(NAD 83)
 JV1199
 JV1199                          SUPERSEDED SURVEY CONTROL
 JV1199
 JV1199  NGVD 29 (11/26/84)   55.261  (m)          181.30   (f) ADJUSTED    2 0
 JV1199
 JV1199.Superseded values are not recommended for survey control.
 JV1199
 JV1199.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1199.See file dsdata.pdf to determine how the superseded data were derived.
 JV1199
 JV1199_MARKER: B = BOLT
 JV1199_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1199_SP_SET: BRIDGEWALL
 JV1199_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1199
 JV1199  HISTORY     - Date     Condition        Report By
 JV1199  HISTORY     - UNK      MONUMENTED       PRR
 JV1199  HISTORY     - 1935     GOOD             CGS
 JV1199
 JV1199                          STATION DESCRIPTION
 JV1199
 JV1199'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1199'AT BALTIMORE.
 JV1199'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, 294 FEET NORTH OF
 JV1199'SIGNAL 4.4, ABOUT 640 FEET NORTHEAST OF THE NORTHEAST CORNER OF
 JV1199'A STONE BUILDING AT A CIDER MILL, AND IN A WALL OF BRIDGE 4.43.
 JV1199'A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9256 ***********************************************************************
 DP9256  DESIGNATION -  5.5
 DP9256  PID         -  DP9256
 DP9256  STATE/COUNTY-  MD/WORCESTER
 DP9256  COUNTRY     -  US
 DP9256  USGS QUAD   -  TINGLES ISLAND (2016)
 DP9256
 DP9256                         *CURRENT SURVEY CONTROL
 DP9256  ______________________________________________________________________
 DP9256* NAD 83(1986) POSITION- 38 14 21.3    (N) 075 08 12.4    (W)   HD_HELD2
 DP9256* NAVD 88 ORTHO HEIGHT -     1.934 (meters)        6.35  (feet) ADJUSTED
 DP9256  ______________________________________________________________________
 DP9256  GEOID HEIGHT    -        -36.163 (meters)                     GEOID18
 DP9256  DYNAMIC HEIGHT  -          1.933 (meters)        6.34  (feet) COMP
 DP9256  MODELED GRAVITY -    979,996.8   (mgal)                       NAVD 88
 DP9256
 DP9256  VERT ORDER      -  SECOND    CLASS II
 DP9256
 DP9256.The horizontal coordinates were established by autonomous hand held GPS
 DP9256.observations and have an estimated accuracy of +/- 10 meters.
 DP9256
 DP9256.The orthometric height was determined by differential leveling and
 DP9256.adjusted by the NATIONAL GEODETIC SURVEY
 DP9256.in July 2016.
 DP9256
 DP9256.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9256.GEOID18 height accuracy estimate available here.
 DP9256
 DP9256.Click photographs - Photos may exist for this station.
 DP9256
 DP9256.The dynamic height is computed by dividing the NAVD 88
 DP9256.geopotential number by the normal gravity value computed on the
 DP9256.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9256.degrees latitude (g = 980.6199 gals.).
 DP9256
 DP9256.The modeled gravity was interpolated from observed gravity values.
 DP9256
 DP9256;                    North         East    Units  Estimated Accuracy
 DP9256;SPC MD       -    65,224.      563,109.      MT  (+/- 10 meters HH2 GPS)
 DP9256
 DP9256_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8803032369(NAD 83)
 DP9256
 DP9256                          SUPERSEDED SURVEY CONTROL
 DP9256
 DP9256.No superseded survey control is available for this station.
 DP9256
 DP9256_MARKER: P = PIPE CAP
 DP9256_SETTING: 47 = GALVANIZED STEEL PIPE W/O SLEEVE (10 FT.+)
 DP9256_STAMPING: NPS 5.5
 DP9256_MARK LOGO: NPS
 DP9256_PROJECTION: FLUSH
 DP9256_MAGNETIC: P = MARKER IS A STEEL PIPE
 DP9256_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9256_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP9256+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9256_ROD/PIPE-DEPTH: 4.9 meters
 DP9256
 DP9256  HISTORY     - Date     Condition        Report By
 DP9256  HISTORY     - UNK      MONUMENTED       NPS
 DP9256  HISTORY     - 20150227 GOOD             NPS
 DP9256
 DP9256                          STATION DESCRIPTION
 DP9256
 DP9256'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9256'THE STATION IS LOCATED ABOUT 8.4 MI (13.5 KM) EAST OF NEWARK, 7.3 MI
 DP9256'(11.7 KM) SOUTH-SOUTHWEST OF OCEAN CITY AND 7.2 MI (11.6 KM) SOUTHEAST
 DP9256'OF BERLIN.
 DP9256'
 DP9256'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY CONTINUE ON
 DP9256'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9256'SHELL ROAD.
 DP9256'
 DP9256'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9256'NATIONAL SEASHORE.
 DP9256'
 DP9256'THE STATION IS LOCATED ON THE RIGHT/EAST SIDE OF SHELL ROAD.  THE MARK
 DP9256'IS 80 CM (31 INCHES) SOUTHEAST OF THE PROJECT STUDY AREA BROWN
 DP9256'CARSONITE POST, 31.2 M (102.4 FT) SOUTHEAST OF THE EASTERN EDGE OF
 DP9256'SHELL ROAD AND 72.0 M (236.2 FT) NORTHWEST OF THE NORTHWEST CORNER OF
 DP9256'THE STATE PARK GROUP CAMPSITE.
 DP9256'
 DP9256'NOTE-'NPS 5.5' STAMPING IS WORN AND HARD TO READ, SEE PHOTO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0560 ***********************************************************************
 JV0560  DESIGNATION -  500 PRATT ST C OF B
 JV0560  PID         -  JV0560
 JV0560  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0560  COUNTRY     -  US
 JV0560  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0560
 JV0560                         *CURRENT SURVEY CONTROL
 JV0560  ______________________________________________________________________
 JV0560* NAD 83(1986) POSITION- 39 17 12.     (N) 076 36 31.     (W)   SCALED
 JV0560* NAVD 88 ORTHO HEIGHT -     1.613 (meters)        5.29  (feet) ADJUSTED
 JV0560  ______________________________________________________________________
 JV0560  GEOID HEIGHT    -        -32.741 (meters)                     GEOID18
 JV0560  DYNAMIC HEIGHT  -          1.612 (meters)        5.29  (feet) COMP
 JV0560  MODELED GRAVITY -    980,103.7   (mgal)                       NAVD 88
 JV0560
 JV0560  VERT ORDER      -  FIRST     CLASS II
 JV0560
 JV0560.The horizontal coordinates were scaled from a map and have
 JV0560.an estimated accuracy of +/- 6 seconds.
 JV0560
 JV0560.The orthometric height was determined by differential leveling and
 JV0560.adjusted by the NATIONAL GEODETIC SURVEY
 JV0560.in June 1991.
 JV0560
 JV0560.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0560.GEOID18 height accuracy estimate available here.
 JV0560
 JV0560.Click photographs - Photos may exist for this station.
 JV0560
 JV0560.The dynamic height is computed by dividing the NAVD 88
 JV0560.geopotential number by the normal gravity value computed on the
 JV0560.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0560.degrees latitude (g = 980.6199 gals.).
 JV0560
 JV0560.The modeled gravity was interpolated from observed gravity values.
 JV0560
 JV0560;                    North         East    Units  Estimated Accuracy
 JV0560;SPC MD       -   179,900.      433,770.      MT  (+/- 180 meters Scaled)
 JV0560
 JV0560_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ612498(NAD 83)
 JV0560
 JV0560                          SUPERSEDED SURVEY CONTROL
 JV0560
 JV0560  NGVD 29 (11/26/84)    1.852  (m)            6.08   (f) ADJUSTED    1 2
 JV0560
 JV0560.Superseded values are not recommended for survey control.
 JV0560
 JV0560.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0560.See file dsdata.pdf to determine how the superseded data were derived.
 JV0560
 JV0560_MARKER: DD = SURVEY DISK
 JV0560_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0560_SP_SET: BUILDING
 JV0560_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0560
 JV0560  HISTORY     - Date     Condition        Report By
 JV0560  HISTORY     - UNK      MONUMENTED       MD0050
 JV0560  HISTORY     - 1954     MARK NOT FOUND   USGS
 JV0560  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0560  HISTORY     - 19971027 MARK NOT FOUND   USPSQD
 JV0560  HISTORY     - 20080802 MARK NOT FOUND   GEOCAC
 JV0560
 JV0560                          STATION DESCRIPTION
 JV0560
 JV0560'DESCRIBED BY US GEOLOGICAL SURVEY 1954
 JV0560'AT BALTIMORE.
 JV0560'AT BALTIMORE, AT THE NORTHEAST CORNER OF THE INTERSECTION OF
 JV0560'EAST PRATT AND SOUTH GAY STREETS, AND AT A CIGAR STORE LOCATED
 JV0560'IN 1933 IN THE MARINE HOTEL.  NOTE-- NO DESCRIPTION WAS
 JV0560'FURNISHED FOR THIS BENCH MARK IN 1933.  THE INFORMATION ABOVE
 JV0560'WAS OBTAINED IN 1935 FROM A BALTIMORE CITY MAP AND A BALTIMORE
 JV0560'CITY DIRECTORY.  ANYONE RECOVERING THIS MARK WILL CONFER A
 JV0560'FAVOR BY SUBMITTING A COMPLETE DESCRIPTION TO THE DIRECTOR,
 JV0560'U.S. COAST AND GEODETIC SURVEY, WASHINGTON 25, D.C.
 JV0560
 JV0560                          STATION RECOVERY (1971)
 JV0560
 JV0560'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0560'MARK NOT FOUND.
 JV0560
 JV0560                          STATION RECOVERY (1997)
 JV0560
 JV0560'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0560'MARK NOT FOUND.
 JV0560
 JV0560                          STATION RECOVERY (2008)
 JV0560
 JV0560'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JV0560'ORIGINAL STRUCTURES ARE GONE - AREA HAS BEEN REDEVELOPED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0803 ***********************************************************************
 JV0803  DESIGNATION -  5037 C OF B
 JV0803  PID         -  JV0803
 JV0803  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0803  COUNTRY     -  US
 JV0803  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0803
 JV0803                         *CURRENT SURVEY CONTROL
 JV0803  ______________________________________________________________________
 JV0803* NAD 83(1986) POSITION- 39 17 50.     (N) 076 37 34.     (W)   SCALED
 JV0803* NAVD 88 ORTHO HEIGHT -    27.755 (meters)       91.06  (feet) ADJUSTED
 JV0803  ______________________________________________________________________
 JV0803  GEOID HEIGHT    -        -32.672 (meters)                     GEOID18
 JV0803  DYNAMIC HEIGHT  -         27.740 (meters)       91.01  (feet) COMP
 JV0803  MODELED GRAVITY -    980,104.7   (mgal)                       NAVD 88
 JV0803
 JV0803  VERT ORDER      -  SECOND    CLASS 0
 JV0803
 JV0803.The horizontal coordinates were scaled from a map and have
 JV0803.an estimated accuracy of +/- 6 seconds.
 JV0803
 JV0803.The orthometric height was determined by differential leveling and
 JV0803.adjusted by the NATIONAL GEODETIC SURVEY
 JV0803.in June 1991.
 JV0803
 JV0803.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0803.GEOID18 height accuracy estimate available here.
 JV0803
 JV0803.Click photographs - Photos may exist for this station.
 JV0803
 JV0803.The dynamic height is computed by dividing the NAVD 88
 JV0803.geopotential number by the normal gravity value computed on the
 JV0803.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0803.degrees latitude (g = 980.6199 gals.).
 JV0803
 JV0803.The modeled gravity was interpolated from observed gravity values.
 JV0803
 JV0803;                    North         East    Units  Estimated Accuracy
 JV0803;SPC MD       -   181,070.      432,250.      MT  (+/- 180 meters Scaled)
 JV0803
 JV0803_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ597510(NAD 83)
 JV0803
 JV0803                          SUPERSEDED SURVEY CONTROL
 JV0803
 JV0803  NGVD 29 (11/26/84)   27.990  (m)           91.83   (f) ADJUSTED    2 0
 JV0803
 JV0803.Superseded values are not recommended for survey control.
 JV0803
 JV0803.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0803.See file dsdata.pdf to determine how the superseded data were derived.
 JV0803
 JV0803_MARKER: Z = SEE DESCRIPTION
 JV0803_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0803_SP_SET: STEP
 JV0803_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0803
 JV0803  HISTORY     - Date     Condition        Report By
 JV0803  HISTORY     - UNK      MONUMENTED       MD0050
 JV0803  HISTORY     - 1935     GOOD             CGS
 JV0803
 JV0803                          STATION DESCRIPTION
 JV0803
 JV0803'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV0803'AT BALTIMORE.
 JV0803'(CITY OF BALTIMORE) ON THE SOUTH END OF THE FOURTH CONCRETE
 JV0803'STEP OF THE ENTRANCE TO THE SEMINARY ON THE EAST SIDE OF
 JV0803'PENNSYLVANIA AVENUE.  OPPOSITE PEARL STREET.  A BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1220 ***********************************************************************
 JV1220  DESIGNATION -  5047 C OF B
 JV1220  PID         -  JV1220
 JV1220  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1220  COUNTRY     -  US
 JV1220  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1220
 JV1220                         *CURRENT SURVEY CONTROL
 JV1220  ______________________________________________________________________
 JV1220* NAD 83(1986) POSITION- 39 18 38.     (N) 076 37 07.     (W)   SCALED
 JV1220* NAVD 88 ORTHO HEIGHT -    29.883 (meters)       98.04  (feet) ADJUSTED
 JV1220  ______________________________________________________________________
 JV1220  GEOID HEIGHT    -        -32.670 (meters)                     GEOID18
 JV1220  DYNAMIC HEIGHT  -         29.867 (meters)       97.99  (feet) COMP
 JV1220  MODELED GRAVITY -    980,104.1   (mgal)                       NAVD 88
 JV1220
 JV1220  VERT ORDER      -  SECOND    CLASS 0
 JV1220
 JV1220.The horizontal coordinates were scaled from a map and have
 JV1220.an estimated accuracy of +/- 6 seconds.
 JV1220
 JV1220.The orthometric height was determined by differential leveling and
 JV1220.adjusted by the NATIONAL GEODETIC SURVEY
 JV1220.in June 1991.
 JV1220
 JV1220.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1220.GEOID18 height accuracy estimate available here.
 JV1220
 JV1220.Click photographs - Photos may exist for this station.
 JV1220
 JV1220.The dynamic height is computed by dividing the NAVD 88
 JV1220.geopotential number by the normal gravity value computed on the
 JV1220.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1220.degrees latitude (g = 980.6199 gals.).
 JV1220
 JV1220.The modeled gravity was interpolated from observed gravity values.
 JV1220
 JV1220;                    North         East    Units  Estimated Accuracy
 JV1220;SPC MD       -   182,550.      432,890.      MT  (+/- 180 meters Scaled)
 JV1220
 JV1220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ604524(NAD 83)
 JV1220
 JV1220                          SUPERSEDED SURVEY CONTROL
 JV1220
 JV1220  NGVD 29 (11/26/84)   30.117  (m)           98.81   (f) ADJUSTED    2 0
 JV1220
 JV1220.Superseded values are not recommended for survey control.
 JV1220
 JV1220.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1220.See file dsdata.pdf to determine how the superseded data were derived.
 JV1220
 JV1220_MARKER: Q = CHISELED SQUARE
 JV1220_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1220_SP_SET: STEP
 JV1220_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1220
 JV1220  HISTORY     - Date     Condition        Report By
 JV1220  HISTORY     - UNK      MONUMENTED       MD0050
 JV1220  HISTORY     - 1935     GOOD             CGS
 JV1220
 JV1220                          STATION DESCRIPTION
 JV1220
 JV1220'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1220'AT BALTIMORE.
 JV1220'AT THE MORGAN MILLWORK CO. BUILDING AT 113-129 WEST NORTH AVENUE,
 JV1220'AT THE ENTRANCE TO THE OFFICE, ON THE WEST END OF A DOORSTEP ON
 JV1220'THE SOUTH SIDE OF NORTH AVENUE, 2.1 FEET WEST OF THE WEST EDGE OF
 JV1220'THE STEP, AND 0.9 FOOT FROM THE FACE OF THE STEP.  A CHISELED
 JV1220'SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0802 ***********************************************************************
 JV0802  DESIGNATION -  5055 C OF B
 JV0802  PID         -  JV0802
 JV0802  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0802  COUNTRY     -  US
 JV0802  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0802
 JV0802                         *CURRENT SURVEY CONTROL
 JV0802  ______________________________________________________________________
 JV0802* NAD 83(1986) POSITION- 39 17 44.     (N) 076 37 43.     (W)   SCALED
 JV0802* NAVD 88 ORTHO HEIGHT -    27.447 (meters)       90.05  (feet) ADJUSTED
 JV0802  ______________________________________________________________________
 JV0802  GEOID HEIGHT    -        -32.668 (meters)                     GEOID18
 JV0802  DYNAMIC HEIGHT  -         27.433 (meters)       90.00  (feet) COMP
 JV0802  MODELED GRAVITY -    980,104.8   (mgal)                       NAVD 88
 JV0802
 JV0802  VERT ORDER      -  SECOND    CLASS 0
 JV0802
 JV0802.The horizontal coordinates were scaled from a map and have
 JV0802.an estimated accuracy of +/- 6 seconds.
 JV0802
 JV0802.The orthometric height was determined by differential leveling and
 JV0802.adjusted by the NATIONAL GEODETIC SURVEY
 JV0802.in June 1991.
 JV0802
 JV0802.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0802.GEOID18 height accuracy estimate available here.
 JV0802
 JV0802.Click photographs - Photos may exist for this station.
 JV0802
 JV0802.The dynamic height is computed by dividing the NAVD 88
 JV0802.geopotential number by the normal gravity value computed on the
 JV0802.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0802.degrees latitude (g = 980.6199 gals.).
 JV0802
 JV0802.The modeled gravity was interpolated from observed gravity values.
 JV0802
 JV0802;                    North         East    Units  Estimated Accuracy
 JV0802;SPC MD       -   180,880.      432,040.      MT  (+/- 180 meters Scaled)
 JV0802
 JV0802_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ595508(NAD 83)
 JV0802
 JV0802                          SUPERSEDED SURVEY CONTROL
 JV0802
 JV0802  NGVD 29 (11/26/84)   27.681  (m)           90.82   (f) ADJUSTED    2 0
 JV0802
 JV0802.Superseded values are not recommended for survey control.
 JV0802
 JV0802.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0802.See file dsdata.pdf to determine how the superseded data were derived.
 JV0802
 JV0802_MARKER: Q = CHISELED SQUARE
 JV0802_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0802_SP_SET: STEP
 JV0802_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0802
 JV0802  HISTORY     - Date     Condition        Report By
 JV0802  HISTORY     - UNK      MONUMENTED       MD0050
 JV0802  HISTORY     - 1935     GOOD             CGS
 JV0802
 JV0802                          STATION DESCRIPTION
 JV0802
 JV0802'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV0802'AT BALTIMORE.
 JV0802'(CITY OF BALTIMORE) ON THE SECOND STEP AT THE BOTTOM OF THE
 JV0802'WATER FOUNTAIN IN PERKINS SQUARE.  AT THE NORTHWEST CORNER OF
 JV0802'MYRTLE AVENUE AND GEORGE STREET.  0.6 OF FOOT FROM THE FACE OF
 JV0802'THE STEP.  CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4034 ***********************************************************************
 AE4034  DESIGNATION -  5102
 AE4034  PID         -  AE4034
 AE4034  STATE/COUNTY-  MD/BALTIMORE
 AE4034  COUNTRY     -  US
 AE4034  USGS QUAD   -  SPARROWS POINT (2016)
 AE4034
 AE4034                         *CURRENT SURVEY CONTROL
 AE4034  ______________________________________________________________________
 AE4034* NAD 83(1986) POSITION- 39 11 48.3    (N) 076 26 47.0    (W)   HD_HELD2
 AE4034* NAVD 88 ORTHO HEIGHT -     1.208 (meters)        3.96  (feet) ADJUSTED
 AE4034  ______________________________________________________________________
 AE4034  GEOID HEIGHT    -        -33.058 (meters)                     GEOID18
 AE4034  DYNAMIC HEIGHT  -          1.208 (meters)        3.96  (feet) COMP
 AE4034  MODELED GRAVITY -    980,105.6   (mgal)                       NAVD 88
 AE4034
 AE4034  VERT ORDER      -  THIRD
 AE4034
 AE4034.The horizontal coordinates were established by autonomous hand held GPS
 AE4034.observations and have an estimated accuracy of +/- 10 meters.
 AE4034
 AE4034.The orthometric height was determined by differential leveling and
 AE4034.adjusted by the NATIONAL GEODETIC SURVEY
 AE4034.in February 1998.
 AE4034
 AE4034.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4034.GEOID18 height accuracy estimate available here.
 AE4034
 AE4034.Click photographs - Photos may exist for this station.
 AE4034
 AE4034.The dynamic height is computed by dividing the NAVD 88
 AE4034.geopotential number by the normal gravity value computed on the
 AE4034.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4034.degrees latitude (g = 980.6199 gals.).
 AE4034
 AE4034.The modeled gravity was interpolated from observed gravity values.
 AE4034
 AE4034;                    North         East    Units  Estimated Accuracy
 AE4034;SPC MD       -   169,993.      447,822.      MT  (+/- 10 meters HH2 GPS)
 AE4034
 AE4034_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7509939606(NAD 83)
 AE4034
 AE4034                          SUPERSEDED SURVEY CONTROL
 AE4034
 AE4034.No superseded survey control is available for this station.
 AE4034
 AE4034_MARKER: DD = SURVEY DISK
 AE4034_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 AE4034_SP_SET: HEADWALL
 AE4034_STAMPING: 5102
 AE4034_MARK LOGO: MD-005
 AE4034_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE4034_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4034+STABILITY: SURFACE MOTION
 AE4034_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4034+SATELLITE: SATELLITE OBSERVATIONS - December 20, 2005
 AE4034
 AE4034  HISTORY     - Date     Condition        Report By
 AE4034  HISTORY     - 1995     MONUMENTED       MD-005
 AE4034  HISTORY     - 20051220 GOOD             GEOCAC
 AE4034  HISTORY     - 20090629 GOOD             MD-005
 AE4034
 AE4034                          STATION DESCRIPTION
 AE4034
 AE4034'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1995
 AE4034'STATION IS LOCATED ON THE FORT HOWARD VETERANS ADMINISTRATION HOSPITAL
 AE4034'GROUNDS. TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 42 AND FOLLOW
 AE4034'RAMP TO NORTH POINT ROAD (RT 20) TOWARD FORT HOWARD.  AT STOP SIGN
 AE4034'TURN RIGHT ON NORTH POINT ROAD AND GO 3.65 MI (5.87 KM) TO THE
 AE4034'ENTRANCE TO FORT HOWARD VA HOSPITAL AND FORT HOWARD PARK.  FROM
 AE4034'ENTRANCE PROCEED SOUTH ON GETTYSBURG AVENUE FOR 0.45 MI (0.72 KM) TO
 AE4034'KEY STREET AND STATION ON THE RIGHT AT THE SOUTH END OF A BOAT RAMP.
 AE4034'STATION MARK IS SET IN TOP OF CONCRETE RETAINING WALL OF BOAT RAMP. IT
 AE4034'IS 3.5 FT (1.1 M) NORTHEAST OF THE SOUTHWEST END OF THE
 AE4034'SOUTHEASTERNMOST CONCRETE RETAINING WALL OF THE BOAT RAMP, 19.6 FT
 AE4034'(6.0 M) NORTHWEST OF BENCHMARK TIDAL 1.
 AE4034
 AE4034                          STATION RECOVERY (2005)
 AE4034
 AE4034'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 AE4034'RECOVERED IN GOOD CONDITION.
 AE4034
 AE4034                          STATION RECOVERY (2009)
 AE4034
 AE4034'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE4034'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2607 ***********************************************************************
 JV2607  DESIGNATION -  514 WSSC
 JV2607  PID         -  JV2607
 JV2607  STATE/COUNTY-  MD/MONTGOMERY
 JV2607  COUNTRY     -  US
 JV2607  USGS QUAD   -  GAITHERSBURG (2016)
 JV2607
 JV2607                         *CURRENT SURVEY CONTROL
 JV2607  ______________________________________________________________________
 JV2607* NAD 83(1986) POSITION- 39 08 28.     (N) 077 11 57.     (W)   SCALED
 JV2607* NAVD 88 ORTHO HEIGHT -   151.28  (+/-2cm)      496.3   (feet) VERTCON3
 JV2607  ______________________________________________________________________
 JV2607  GEOID HEIGHT    -        -31.737 (meters)                     GEOID18
 JV2607  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2607
 JV2607.The horizontal coordinates were scaled from a map and have
 JV2607.an estimated accuracy of +/- 6 seconds.
 JV2607
 JV2607.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2607.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2607
 JV2607.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2607.GEOID18 height accuracy estimate available here.
 JV2607
 JV2607.The vertical order pertains to the NGVD 29 superseded value.
 JV2607
 JV2607.Click photographs - Photos may exist for this station.
 JV2607
 JV2607;                    North         East    Units  Estimated Accuracy
 JV2607;SPC MD       -   163,690.      382,780.      MT  (+/- 180 meters Scaled)
 JV2607
 JV2607_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ099347(NAD 83)
 JV2607
 JV2607                          SUPERSEDED SURVEY CONTROL
 JV2607
 JV2607  NGVD 29 (11/26/84)  151.491  (m)          497.02   (f) ADJUSTED    2 0
 JV2607
 JV2607.Superseded values are not recommended for survey control.
 JV2607
 JV2607.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2607.See file dsdata.pdf to determine how the superseded data were derived.
 JV2607
 JV2607_MARKER: DD = SURVEY DISK
 JV2607_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2607_SP_SET: SIGNAL TOWER
 JV2607_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2607
 JV2607  HISTORY     - Date     Condition        Report By
 JV2607  HISTORY     - UNK      MONUMENTED       WSSC
 JV2607  HISTORY     - 1946     GOOD             WSSC
 JV2607
 JV2607                          STATION DESCRIPTION
 JV2607
 JV2607'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2607'AT GAITHERSBURG.
 JV2607'AT GAITHERSBURG, MONTGOMERY COUNTY, ON FREDERICK AVENUE, AT THE
 JV2607'CROSSING OF DIAMOND AVENUE AND THE BALTIMORE AND OHIO RAILROAD,
 JV2607'OPPOSITE THE WATCHMANS SHANTY, SOUTHWEST OF FREDERICK AVENUE,
 JV2607'AND IN THE BASE OF A WARNING-SIGNAL TOWER NORTH OF THE TRACK.
 JV2607'A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS CHECK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2949 ***********************************************************************
 JV2949  DESIGNATION -  514+57
 JV2949  PID         -  JV2949
 JV2949  STATE/COUNTY-  MD/WASHINGTON
 JV2949  COUNTRY     -  US
 JV2949  USGS QUAD   -  KEEDYSVILLE (2016)
 JV2949
 JV2949                         *CURRENT SURVEY CONTROL
 JV2949  ______________________________________________________________________
 JV2949* NAD 83(1986) POSITION- 39 27 01.     (N) 077 41 08.     (W)   SCALED
 JV2949* NAVD 88 ORTHO HEIGHT -   156.714 (meters)      514.15  (feet) ADJUSTED
 JV2949  ______________________________________________________________________
 JV2949  GEOID HEIGHT    -        -33.593 (meters)                     GEOID18
 JV2949  DYNAMIC HEIGHT  -        156.622 (meters)      513.85  (feet) COMP
 JV2949  MODELED GRAVITY -    980,035.0   (mgal)                       NAVD 88
 JV2949
 JV2949  VERT ORDER      -  FIRST     CLASS II
 JV2949
 JV2949.The horizontal coordinates were scaled from a map and have
 JV2949.an estimated accuracy of +/- 6 seconds.
 JV2949
 JV2949.The orthometric height was determined by differential leveling and
 JV2949.adjusted by the NATIONAL GEODETIC SURVEY
 JV2949.in June 1991.
 JV2949
 JV2949.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2949.GEOID18 height accuracy estimate available here.
 JV2949
 JV2949.Click photographs - Photos may exist for this station.
 JV2949
 JV2949.The dynamic height is computed by dividing the NAVD 88
 JV2949.geopotential number by the normal gravity value computed on the
 JV2949.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2949.degrees latitude (g = 980.6199 gals.).
 JV2949
 JV2949.The modeled gravity was interpolated from observed gravity values.
 JV2949
 JV2949;                    North         East    Units  Estimated Accuracy
 JV2949;SPC MD       -   198,220.      340,990.      MT  (+/- 180 meters Scaled)
 JV2949
 JV2949_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ689701(NAD 83)
 JV2949
 JV2949                          SUPERSEDED SURVEY CONTROL
 JV2949
 JV2949  NGVD 29 (11/26/84)  156.911  (m)          514.80   (f) ADJUSTED    1 2
 JV2949
 JV2949.Superseded values are not recommended for survey control.
 JV2949
 JV2949.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2949.See file dsdata.pdf to determine how the superseded data were derived.
 JV2949
 JV2949_MARKER: Q = CHISELED SQUARE
 JV2949_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2949_SP_SET: CULVERT HEADWALL
 JV2949_MARK LOGO: BORR
 JV2949_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2949
 JV2949  HISTORY     - Date     Condition        Report By
 JV2949  HISTORY     - UNK      MONUMENTED       BORR
 JV2949  HISTORY     - 1934     GOOD             CGS
 JV2949
 JV2949                          STATION DESCRIPTION
 JV2949
 JV2949'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JV2949'2.6 MI S FROM KEEDYSVILLE.
 JV2949'2.6 MILES SOUTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2949'STATION AT KEEDYSVILLE, WASHINGTON COUNTY, AT THE HOUSE OF
 JV2949'W.M. LEWIS (HAVING A VERY LARGE WALNUT TREE IN FRONT), AT A
 JV2949'STONE BOX CULVERT UNDER A PRIVATE ROAD, ON THE WEST END OF THE
 JV2949'SOUTH HEADWALL, AND 20 FEET WEST OF THE TRACK.  A CHISELED
 JV2949'SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1054 ***********************************************************************
 JV1054  DESIGNATION -  516 B
 JV1054  PID         -  JV1054
 JV1054  STATE/COUNTY-  MD/MONTGOMERY
 JV1054  COUNTRY     -  US
 JV1054  USGS QUAD   -  BELTSVILLE (2016)
 JV1054
 JV1054                         *CURRENT SURVEY CONTROL
 JV1054  ______________________________________________________________________
 JV1054* NAD 83(1986) POSITION- 39 07 00.     (N) 076 58 09.     (W)   SCALED
 JV1054* NAVD 88 ORTHO HEIGHT -   157.18  (+/-2cm)      515.7   (feet) VERTCON3
 JV1054  ______________________________________________________________________
 JV1054  GEOID HEIGHT    -        -32.002 (meters)                     GEOID18
 JV1054  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV1054
 JV1054.The horizontal coordinates were scaled from a map and have
 JV1054.an estimated accuracy of +/- 6 seconds.
 JV1054
 JV1054.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1054.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1054
 JV1054.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1054.GEOID18 height accuracy estimate available here.
 JV1054
 JV1054.The vertical order pertains to the NGVD 29 superseded value.
 JV1054
 JV1054.Click photographs - Photos may exist for this station.
 JV1054
 JV1054;                    North         East    Units  Estimated Accuracy
 JV1054;SPC MD       -   160,960.      402,670.      MT  (+/- 180 meters Scaled)
 JV1054
 JV1054_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ297315(NAD 83)
 JV1054
 JV1054                          SUPERSEDED SURVEY CONTROL
 JV1054
 JV1054  NGVD 29 (11/26/84)  157.391  (m)          516.37   (f) ADJUSTED    2 0
 JV1054
 JV1054.Superseded values are not recommended for survey control.
 JV1054
 JV1054.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1054.See file dsdata.pdf to determine how the superseded data were derived.
 JV1054
 JV1054_MARKER: DB = BENCH MARK DISK
 JV1054_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1054_SP_SET: PAVED ROAD
 JV1054_STAMPING: 516 B
 JV1054_MARK LOGO: USGS
 JV1054_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1054+STABILITY: SURFACE MOTION
 JV1054
 JV1054  HISTORY     - Date     Condition        Report By
 JV1054  HISTORY     - 1906     MONUMENTED       USGS
 JV1054  HISTORY     - 1939     GOOD             WSSC
 JV1054
 JV1054                          STATION DESCRIPTION
 JV1054
 JV1054'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV1054'0.2 MI W FROM SPENCERVILLE.
 JV1054'ON SANDY SPRING ROAD, 0.2 MILE WEST OF THE POST OFFICE, IN THE
 JV1054'SOUTHEAST CORNER OF THE INTERSECTION OF A PAVED ROAD LEADING
 JV1054'SOUTH, 60 FEET SOUTH OF THE MAIN ROAD, AND 2 FEET FROM THE
 JV1054'NORTHWEST CORNER OF A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2941 ***********************************************************************
 JV2941  DESIGNATION -  52+18
 JV2941  PID         -  JV2941
 JV2941  STATE/COUNTY-  MD/WASHINGTON
 JV2941  COUNTRY     -  US
 JV2941  USGS QUAD   -  HARPERS FERRY (2016)
 JV2941
 JV2941                         *CURRENT SURVEY CONTROL
 JV2941  ______________________________________________________________________
 JV2941* NAD 83(1986) POSITION- 39 20 16.     (N) 077 41 20.     (W)   SCALED
 JV2941* NAVD 88 ORTHO HEIGHT -   101.899 (meters)      334.31  (feet) ADJUSTED
 JV2941  ______________________________________________________________________
 JV2941  GEOID HEIGHT    -        -33.318 (meters)                     GEOID18
 JV2941  DYNAMIC HEIGHT  -        101.841 (meters)      334.12  (feet) COMP
 JV2941  MODELED GRAVITY -    980,056.5   (mgal)                       NAVD 88
 JV2941
 JV2941  VERT ORDER      -  FIRST     CLASS II
 JV2941
 JV2941.The horizontal coordinates were scaled from a map and have
 JV2941.an estimated accuracy of +/- 6 seconds.
 JV2941
 JV2941.The orthometric height was determined by differential leveling and
 JV2941.adjusted by the NATIONAL GEODETIC SURVEY
 JV2941.in June 1991.
 JV2941
 JV2941.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2941.GEOID18 height accuracy estimate available here.
 JV2941
 JV2941.Click photographs - Photos may exist for this station.
 JV2941
 JV2941.The dynamic height is computed by dividing the NAVD 88
 JV2941.geopotential number by the normal gravity value computed on the
 JV2941.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2941.degrees latitude (g = 980.6199 gals.).
 JV2941
 JV2941.The modeled gravity was interpolated from observed gravity values.
 JV2941
 JV2941;                    North         East    Units  Estimated Accuracy
 JV2941;SPC MD       -   185,730.      340,610.      MT  (+/- 180 meters Scaled)
 JV2941
 JV2941_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ682577(NAD 83)
 JV2941
 JV2941                          SUPERSEDED SURVEY CONTROL
 JV2941
 JV2941  NGVD 29 (11/26/84)  102.100  (m)          334.97   (f) ADJUSTED    1 2
 JV2941
 JV2941.Superseded values are not recommended for survey control.
 JV2941
 JV2941.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2941.See file dsdata.pdf to determine how the superseded data were derived.
 JV2941
 JV2941_MARKER: Q = CHISELED SQUARE
 JV2941_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2941_SP_SET: BRIDGE ABUTMENT
 JV2941_MARK LOGO: BORR
 JV2941_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2941
 JV2941  HISTORY     - Date     Condition        Report By
 JV2941  HISTORY     - UNK      MONUMENTED       BORR
 JV2941  HISTORY     - 1938     GOOD             CGS
 JV2941
 JV2941                          STATION DESCRIPTION
 JV2941
 JV2941'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2941'1 MI N FROM WEVERTON.
 JV2941'1 MILE NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2941'STATION AT WEVERTON, WASHINGTON COUNTY, AT BRIDGE 6 (THE SECOND
 JV2941'BRIDGE SOUTH OF STONEBRAKER), AND ON THE TOP OF THE WEST END OF
 JV2941'THE SOUTH CONCRETE ABUTMENT.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2767 ***********************************************************************
 JV2767  DESIGNATION -  520
 JV2767  PID         -  JV2767
 JV2767  STATE/COUNTY-  MD/MONTGOMERY
 JV2767  COUNTRY     -  US
 JV2767  USGS QUAD   -  SANDY SPRING (2016)
 JV2767
 JV2767                         *CURRENT SURVEY CONTROL
 JV2767  ______________________________________________________________________
 JV2767* NAD 83(1986) POSITION- 39 13 33.     (N) 077 04 05.     (W)   SCALED
 JV2767* NAVD 88 ORTHO HEIGHT -   158.33  (+/-2cm)      519.5   (feet) VERTCON3
 JV2767  ______________________________________________________________________
 JV2767  GEOID HEIGHT    -        -31.823 (meters)                     GEOID18
 JV2767  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2767
 JV2767.The horizontal coordinates were scaled from a map and have
 JV2767.an estimated accuracy of +/- 6 seconds.
 JV2767
 JV2767.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2767.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2767
 JV2767.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2767.GEOID18 height accuracy estimate available here.
 JV2767
 JV2767.The vertical order pertains to the NGVD 29 superseded value.
 JV2767
 JV2767.Click photographs - Photos may exist for this station.
 JV2767
 JV2767;                    North         East    Units  Estimated Accuracy
 JV2767;SPC MD       -   173,080.      394,120.      MT  (+/- 180 meters Scaled)
 JV2767
 JV2767_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ214438(NAD 83)
 JV2767
 JV2767                          SUPERSEDED SURVEY CONTROL
 JV2767
 JV2767  NGVD 29 (11/26/84)  158.534  (m)          520.12   (f) ADJUSTED    2 0
 JV2767
 JV2767.Superseded values are not recommended for survey control.
 JV2767
 JV2767.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2767.See file dsdata.pdf to determine how the superseded data were derived.
 JV2767
 JV2767_MARKER: DB = BENCH MARK DISK
 JV2767_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV2767_SP_SET: HOUSE FOUNDATION
 JV2767_STAMPING: 520
 JV2767_MARK LOGO: USGS
 JV2767_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2767+STABILITY: SURFACE MOTION
 JV2767
 JV2767  HISTORY     - Date     Condition        Report By
 JV2767  HISTORY     - 1904     MONUMENTED       USGS
 JV2767  HISTORY     - 1939     GOOD             WSSC
 JV2767
 JV2767                          STATION DESCRIPTION
 JV2767
 JV2767'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2767'AT UNITY.
 JV2767'ON THE SUNSHINE-UNITY ROAD, 0.1 MILE WEST OF THE JUNCTION OF
 JV2767'THE LAYTONSVILLE ROAD (STATE HIGHWAY 701), ON THE SOUTH SIDE OF
 JV2767'THE ROAD, ON THE NORTH SIDE OF THE FIRST HOUSE WEST OF THE
 JV2767'GENERAL STORE, AND UNDER THE FRONT PORCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1213 ***********************************************************************
 JV1213  DESIGNATION -  5211 C OF B
 JV1213  PID         -  JV1213
 JV1213  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1213  COUNTRY     -  US
 JV1213  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1213
 JV1213                         *CURRENT SURVEY CONTROL
 JV1213  ______________________________________________________________________
 JV1213* NAD 83(1986) POSITION- 39 19 37.     (N) 076 37 40.     (W)   SCALED
 JV1213* NAVD 88 ORTHO HEIGHT -    62.321 (meters)      204.46  (feet) ADJUSTED
 JV1213  ______________________________________________________________________
 JV1213  GEOID HEIGHT    -        -32.613 (meters)                     GEOID18
 JV1213  DYNAMIC HEIGHT  -         62.288 (meters)      204.36  (feet) COMP
 JV1213  MODELED GRAVITY -    980,102.9   (mgal)                       NAVD 88
 JV1213
 JV1213  VERT ORDER      -  SECOND    CLASS 0
 JV1213
 JV1213.The horizontal coordinates were scaled from a map and have
 JV1213.an estimated accuracy of +/- 6 seconds.
 JV1213
 JV1213.The orthometric height was determined by differential leveling and
 JV1213.adjusted by the NATIONAL GEODETIC SURVEY
 JV1213.in June 1991.
 JV1213
 JV1213.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1213.GEOID18 height accuracy estimate available here.
 JV1213
 JV1213.Click photographs - Photos may exist for this station.
 JV1213
 JV1213.The dynamic height is computed by dividing the NAVD 88
 JV1213.geopotential number by the normal gravity value computed on the
 JV1213.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1213.degrees latitude (g = 980.6199 gals.).
 JV1213
 JV1213.The modeled gravity was interpolated from observed gravity values.
 JV1213
 JV1213;                    North         East    Units  Estimated Accuracy
 JV1213;SPC MD       -   184,370.      432,100.      MT  (+/- 180 meters Scaled)
 JV1213
 JV1213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ596543(NAD 83)
 JV1213
 JV1213                          SUPERSEDED SURVEY CONTROL
 JV1213
 JV1213  NGVD 29 (11/26/84)   62.554  (m)          205.23   (f) ADJUSTED    2 0
 JV1213
 JV1213.Superseded values are not recommended for survey control.
 JV1213
 JV1213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1213.See file dsdata.pdf to determine how the superseded data were derived.
 JV1213
 JV1213_MARKER: Z = SEE DESCRIPTION
 JV1213_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1213_SP_SET: STEP
 JV1213_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1213
 JV1213  HISTORY     - Date     Condition        Report By
 JV1213  HISTORY     - UNK      MONUMENTED       MD0050
 JV1213  HISTORY     - 1935     GOOD             CGS
 JV1213
 JV1213                          STATION DESCRIPTION
 JV1213
 JV1213'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1213'AT BALTIMORE.
 JV1213'AT BALTIMORE, AT THE NORTHEAST CORNER OF THE INTERSECTION OF
 JV1213'DESWICK ROAD AND THIRTY-THIRD STREET, AT A STUCCO SERVICE
 JV1213'STATION, IN THE TOP OF A CONCRETE STEP, AND WEST OF THE DOOR.  A
 JV1213'BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1215 ***********************************************************************
 JV1215  DESIGNATION -  5212 C OF B
 JV1215  PID         -  JV1215
 JV1215  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1215  COUNTRY     -  US
 JV1215  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1215
 JV1215                         *CURRENT SURVEY CONTROL
 JV1215  ______________________________________________________________________
 JV1215* NAD 83(1986) POSITION- 39 19 33.     (N) 076 37 29.     (W)   SCALED
 JV1215* NAVD 88 ORTHO HEIGHT -    60.721 (meters)      199.22  (feet) ADJUSTED
 JV1215  ______________________________________________________________________
 JV1215  GEOID HEIGHT    -        -32.624 (meters)                     GEOID18
 JV1215  DYNAMIC HEIGHT  -         60.689 (meters)      199.11  (feet) COMP
 JV1215  MODELED GRAVITY -    980,102.7   (mgal)                       NAVD 88
 JV1215
 JV1215  VERT ORDER      -  SECOND    CLASS 0
 JV1215
 JV1215.The horizontal coordinates were scaled from a map and have
 JV1215.an estimated accuracy of +/- 6 seconds.
 JV1215
 JV1215.The orthometric height was determined by differential leveling and
 JV1215.adjusted by the NATIONAL GEODETIC SURVEY
 JV1215.in June 1991.
 JV1215
 JV1215.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1215.GEOID18 height accuracy estimate available here.
 JV1215
 JV1215.Click photographs - Photos may exist for this station.
 JV1215
 JV1215.The dynamic height is computed by dividing the NAVD 88
 JV1215.geopotential number by the normal gravity value computed on the
 JV1215.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1215.degrees latitude (g = 980.6199 gals.).
 JV1215
 JV1215.The modeled gravity was interpolated from observed gravity values.
 JV1215
 JV1215;                    North         East    Units  Estimated Accuracy
 JV1215;SPC MD       -   184,250.      432,360.      MT  (+/- 180 meters Scaled)
 JV1215
 JV1215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ599541(NAD 83)
 JV1215
 JV1215                          SUPERSEDED SURVEY CONTROL
 JV1215
 JV1215  NGVD 29 (11/26/84)   60.953  (m)          199.98   (f) ADJUSTED    2 0
 JV1215
 JV1215.Superseded values are not recommended for survey control.
 JV1215
 JV1215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1215.See file dsdata.pdf to determine how the superseded data were derived.
 JV1215
 JV1215_MARKER: Z = SEE DESCRIPTION
 JV1215_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1215_SP_SET: CURB
 JV1215_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1215
 JV1215  HISTORY     - Date     Condition        Report By
 JV1215  HISTORY     - UNK      MONUMENTED       MD0050
 JV1215  HISTORY     - 1935     GOOD             CGS
 JV1215
 JV1215                          STATION DESCRIPTION
 JV1215
 JV1215'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1215'AT BALTIMORE.
 JV1215'AT BALTIMORE, WEST OF JOHNS HOPKINS UNIVERSITY, AT THE SOUTH END
 JV1215'OF A STONE BRIDGE WALL ON WYMAN PARK DRIVE, IN THE TOP OF A CURB
 JV1215'LEDGE, 1.4 FEET FROM THE END, AND 0.2 FOOT FROM THE FRONT EDGE.
 JV1215'A COPPER SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2664 ***********************************************************************
 JV2664  DESIGNATION -  523
 JV2664  PID         -  JV2664
 JV2664  STATE/COUNTY-  MD/MONTGOMERY
 JV2664  COUNTRY     -  US
 JV2664  USGS QUAD   -  SANDY SPRING (2016)
 JV2664
 JV2664                         *CURRENT SURVEY CONTROL
 JV2664  ______________________________________________________________________
 JV2664* NAD 83(1986) POSITION- 39 10 35.     (N) 077 06 03.     (W)   SCALED
 JV2664* NAVD 88 ORTHO HEIGHT -   159.09  (+/-2cm)      521.9   (feet) VERTCON3
 JV2664  ______________________________________________________________________
 JV2664  GEOID HEIGHT    -        -31.778 (meters)                     GEOID18
 JV2664  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2664
 JV2664.The horizontal coordinates were scaled from a map and have
 JV2664.an estimated accuracy of +/- 6 seconds.
 JV2664
 JV2664.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2664.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2664
 JV2664.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2664.GEOID18 height accuracy estimate available here.
 JV2664
 JV2664.The vertical order pertains to the NGVD 29 superseded value.
 JV2664
 JV2664.Click photographs - Photos may exist for this station.
 JV2664
 JV2664;                    North         East    Units  Estimated Accuracy
 JV2664;SPC MD       -   167,590.      391,290.      MT  (+/- 180 meters Scaled)
 JV2664
 JV2664_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ185384(NAD 83)
 JV2664
 JV2664                          SUPERSEDED SURVEY CONTROL
 JV2664
 JV2664  NGVD 29 (11/26/84)  159.288  (m)          522.60   (f) ADJUSTED    2 0
 JV2664
 JV2664.Superseded values are not recommended for survey control.
 JV2664
 JV2664.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2664.See file dsdata.pdf to determine how the superseded data were derived.
 JV2664
 JV2664_MARKER: DB = BENCH MARK DISK
 JV2664_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2664_SP_SET: BUILDING
 JV2664_STAMPING: 523
 JV2664_MARK LOGO: USGS
 JV2664_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2664
 JV2664  HISTORY     - Date     Condition        Report By
 JV2664  HISTORY     - 1904     MONUMENTED       USGS
 JV2664  HISTORY     - 1944     GOOD             WSSC
 JV2664
 JV2664                          STATION DESCRIPTION
 JV2664
 JV2664'DESCRIBED BY WASH SUBURB SAN COMM 1944
 JV2664'2.7 MI NW FROM OLNEY.
 JV2664'ON STATE HIGHWAY 108, AT THE JUNCTION OF A ROAD LEADING NORTH
 JV2664'TO MT. ZION, ON THE SOUTH SIDE OF THE HIGHWAY, AND IN THE
 JV2664'NORTH WALL OF A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1904 ***********************************************************************
 JV1904  DESIGNATION -  524
 JV1904  PID         -  JV1904
 JV1904  STATE/COUNTY-  MD/CARROLL
 JV1904  COUNTRY     -  US
 JV1904  USGS QUAD   -  TANEYTOWN (2016)
 JV1904
 JV1904                         *CURRENT SURVEY CONTROL
 JV1904  ______________________________________________________________________
 JV1904* NAD 83(1986) POSITION- 39 39 35.1    (N) 077 10 34.5    (W)   HD_HELD2
 JV1904* NAVD 88 ORTHO HEIGHT -   159.272 (meters)      522.54  (feet) ADJUSTED
 JV1904  ______________________________________________________________________
 JV1904  GEOID HEIGHT    -        -32.962 (meters)                     GEOID18
 JV1904  DYNAMIC HEIGHT  -        159.188 (meters)      522.27  (feet) COMP
 JV1904  MODELED GRAVITY -    980,090.9   (mgal)                       NAVD 88
 JV1904
 JV1904  VERT ORDER      -  SECOND    CLASS II
 JV1904
 JV1904.The horizontal coordinates were established by autonomous hand held GPS
 JV1904.observations and have an estimated accuracy of +/- 10 meters.
 JV1904
 JV1904.The orthometric height was determined by differential leveling and
 JV1904.adjusted by the NATIONAL GEODETIC SURVEY
 JV1904.in August 1994.
 JV1904
 JV1904.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1904.GEOID18 height accuracy estimate available here.
 JV1904
 JV1904.Click photographs - Photos may exist for this station.
 JV1904
 JV1904.The dynamic height is computed by dividing the NAVD 88
 JV1904.geopotential number by the normal gravity value computed on the
 JV1904.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1904.degrees latitude (g = 980.6199 gals.).
 JV1904
 JV1904.The modeled gravity was interpolated from observed gravity values.
 JV1904
 JV1904;                    North         East    Units  Estimated Accuracy
 JV1904;SPC MD       -   221,266.      384,874.      MT  (+/- 10 meters HH2 GPS)
 JV1904
 JV1904_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1330892257(NAD 83)
 JV1904
 JV1904                          SUPERSEDED SURVEY CONTROL
 JV1904
 JV1904  NAVD 88 (06/15/91)  159.288  (m)          522.60   (f) SUPERSEDED  2 0
 JV1904  NGVD 29 (11/26/84)  159.487  (m)          523.25   (f) ADJUSTED    2 0
 JV1904
 JV1904.Superseded values are not recommended for survey control.
 JV1904
 JV1904.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1904.See file dsdata.pdf to determine how the superseded data were derived.
 JV1904
 JV1904_MARKER: DB = BENCH MARK DISK
 JV1904_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV1904_SP_SET: BRICK WALL
 JV1904_STAMPING: 524
 JV1904_MARK LOGO: USGS
 JV1904_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1904+STABILITY: SURFACE MOTION
 JV1904_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1904+SATELLITE: SATELLITE OBSERVATIONS - January 25, 2008
 JV1904
 JV1904  HISTORY     - Date     Condition        Report By
 JV1904  HISTORY     - 1908     MONUMENTED       USGS
 JV1904  HISTORY     - 1942     GOOD             CGS
 JV1904  HISTORY     - 19900614 GOOD             NGS
 JV1904  HISTORY     - 20050828 POOR             GEOCAC
 JV1904  HISTORY     - 20070103 POOR             GEOCAC
 JV1904  HISTORY     - 20080125 GOOD             MDSHA
 JV1904
 JV1904                          STATION DESCRIPTION
 JV1904
 JV1904'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1904'AT TANEYTOWN.
 JV1904'AT TANEYTOWN, CARROLL COUNTY, ON EAST BALTIMORE STREET, AT THE
 JV1904'INTERSECTION OF STATE HIGHWAYS 32 AND 71, AT THE SOUTHWEST END
 JV1904'OF A RESTAURANT, IN THE BRICK WALL, 2 FEET SOUTHEAST OF THE WEST
 JV1904'CORNER OF THE BUILDING, AND ABOUT 3 FEET HIGHER THAN THE HIGHWAY.
 JV1904'A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 524 AND
 JV1904'SET VERTICALLY.
 JV1904
 JV1904                          STATION RECOVERY (1990)
 JV1904
 JV1904'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV1904'RECOVERED IN GOOD CONDITION.
 JV1904
 JV1904                          STATION RECOVERY (2005)
 JV1904
 JV1904'RECOVERY NOTE BY GEOCACHING 2005 (RCF)
 JV1904'AT TANEYTOWN, ON EAST BALTIMORE STREET, AT THE INTERSECTION OF STATE
 JV1904'HIGHWAYS 140 AND 94, IN THE NORTHEAST CORNER OF THE INTERSECTION, AT
 JV1904'THE SOUTHWEST END OF A BRICK BUILDING, 2 FEET SOUTHEAST OF THE WEST
 JV1904'CORNER OF THE BUILDING, AND ABOUT 3 FEET HIGHER THAN THE HIGHWAY.
 JV1904'
 JV1904'APPROXIMATELY HALF OF THE DISK IS MISSING, BUT THE CENTER + IS
 JV1904'VISIBLE.
 JV1904
 JV1904                          STATION RECOVERY (2007)
 JV1904
 JV1904'RECOVERY NOTE BY GEOCACHING 2007 (PSB)
 JV1904'APPROX 45 PERCENT OF THE DISK IS MISSING.
 JV1904
 JV1904                          STATION RECOVERY (2008)
 JV1904
 JV1904'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV1904'THE MARK IS LOCATED IN TANEYTOWN, ON EAST BALTIMORE STREET, AT THE
 JV1904'INTERSECTION OF MARYLAND ROUTE 140 AND MARYLAND ROUTE 194.
 JV1904'
 JV1904'THE MARK IS SET VERTICALLY IN THE WALL AT THE SOUTHWEST END OF AN
 JV1904'APARTMENT COMPLEX, 2.0 FT (0.6 M) SOUTHEAST OF THE WEST CORNER OF THE
 JV1904'BUILDING AND ABOUT 3.0 FT (0.9 M) HIGHER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7899 ***********************************************************************
 DH7899  DESIGNATION -  527
 DH7899  PID         -  DH7899
 DH7899  STATE/COUNTY-  MD/WORCESTER
 DH7899  COUNTRY     -  US
 DH7899  USGS QUAD   -  BOXIRON (2016)
 DH7899
 DH7899                         *CURRENT SURVEY CONTROL
 DH7899  ______________________________________________________________________
 DH7899* NAD 83(1986) POSITION- 38 04 36.5    (N) 075 21 54.4    (W)   HD_HELD2
 DH7899* NAVD 88 ORTHO HEIGHT -     0.697 (meters)        2.29  (feet) ADJUSTED
 DH7899  ______________________________________________________________________
 DH7899  GEOID HEIGHT    -        -36.354 (meters)                     GEOID18
 DH7899  DYNAMIC HEIGHT  -          0.696 (meters)        2.28  (feet) COMP
 DH7899  MODELED GRAVITY -    979,974.0   (mgal)                       NAVD 88
 DH7899
 DH7899  VERT ORDER      -  SECOND    CLASS I
 DH7899
 DH7899.The horizontal coordinates were established by autonomous hand held GPS
 DH7899.observations and have an estimated accuracy of +/- 10 meters.
 DH7899
 DH7899.The orthometric height was determined by differential leveling and
 DH7899.adjusted by the NATIONAL GEODETIC SURVEY
 DH7899.in June 2006.
 DH7899
 DH7899.No vertical observational check was made to the station.
 DH7899
 DH7899.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7899.GEOID18 height accuracy estimate available here.
 DH7899
 DH7899.Click photographs - Photos may exist for this station.
 DH7899
 DH7899.The dynamic height is computed by dividing the NAVD 88
 DH7899.geopotential number by the normal gravity value computed on the
 DH7899.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7899.degrees latitude (g = 980.6199 gals.).
 DH7899
 DH7899.The modeled gravity was interpolated from observed gravity values.
 DH7899
 DH7899;                    North         East    Units  Estimated Accuracy
 DH7899;SPC MD       -    46,812.      543,445.      MT  (+/- 10 meters HH2 GPS)
 DH7899
 DH7899_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6797714399(NAD 83)
 DH7899
 DH7899                          SUPERSEDED SURVEY CONTROL
 DH7899
 DH7899.No superseded survey control is available for this station.
 DH7899
 DH7899_MARKER: DD = SURVEY DISK
 DH7899_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DH7899_STAMPING: 527
 DH7899_MARK LOGO: MDGEO
 DH7899_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH7899_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DH7899+STABILITY: SURFACE MOTION
 DH7899_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7899+SATELLITE: SATELLITE OBSERVATIONS - 2004
 DH7899
 DH7899  HISTORY     - Date     Condition        Report By
 DH7899  HISTORY     - 2004     MONUMENTED       MDSHA
 DH7899
 DH7899                          STATION DESCRIPTION
 DH7899
 DH7899'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (SFK)
 DH7899'THE STATION IS LOCATED ABOUT 2.1 MI (3.38 KM) SOUTHEAST OF GIRDLETREE
 DH7899'AND 2.9 MI (4.67 KM) NORTHEAST OF STOCKTON. TO REACH THE STATION FROM
 DH7899'THE POST OFFICE IN GIRDLETREE, GO SOUTHEAST ALONG TAYLORS LANDING ROAD
 DH7899'FOR 1.55 MI (2.49 KM) TO A Y-INTERSECTION.  BEAR RIGHT AND CONTINUE
 DH7899'SOUTHEAST ALONG TAYLORS LANDING ROAD FOR 0.8 MI (1.29 KM) TO THE
 DH7899'BEGINNING OF THE PARKING AREA AND THE STATION ON THE RIGHT. THE
 DH7899'STATION IS A MARYLAND GEOLOGICAL SURVEY DISK SET IN THE TOP OF A 6
 DH7899'INCH (15 CM) ROUND CONCRETE MONUMENT WHICH IS INCASED IN A PVC PIPE.
 DH7899'IT IS 15.8 FT (4.8 M) SOUTHWEST OF THE SOUTHWEST EDGE OF THE PARKING
 DH7899'AREA, 66.8 FT (20.4 M) SOUTH OF POWER POLE 53523-82612, 68.0 FT (20.7
 DH7899'M) NORTHWEST OF POWER POLE 53534-82595, 61.7 FT (18.8 M) NORTH OF
 DH7899'POWER POLE 53525-82598, 3.6 FT (1.1 M) NORTHEAST OF A CARSONITE
 DH7899'WITNESS POST AND ABOUT 15 FT (4.6 M) NORTHWEST OF THE WATERS EDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1857 ***********************************************************************
 JV1857  DESIGNATION -  53 PRR
 JV1857  PID         -  JV1857
 JV1857  STATE/COUNTY-  MD/FREDERICK
 JV1857  COUNTRY     -  US
 JV1857  USGS QUAD   -  WOODSBORO (2016)
 JV1857
 JV1857                         *CURRENT SURVEY CONTROL
 JV1857  ______________________________________________________________________
 JV1857* NAD 83(1986) POSITION- 39 33 15.     (N) 077 18 45.     (W)   SCALED
 JV1857* NAVD 88 ORTHO HEIGHT -   132.361 (meters)      434.25  (feet) ADJUSTED
 JV1857  ______________________________________________________________________
 JV1857  GEOID HEIGHT    -        -32.897 (meters)                     GEOID18
 JV1857  DYNAMIC HEIGHT  -        132.290 (meters)      434.02  (feet) COMP
 JV1857  MODELED GRAVITY -    980,086.4   (mgal)                       NAVD 88
 JV1857
 JV1857  VERT ORDER      -  SECOND    CLASS 0
 JV1857
 JV1857.The horizontal coordinates were scaled from a map and have
 JV1857.an estimated accuracy of +/- 6 seconds.
 JV1857
 JV1857.The orthometric height was determined by differential leveling and
 JV1857.adjusted by the NATIONAL GEODETIC SURVEY
 JV1857.in June 1991.
 JV1857
 JV1857.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1857.GEOID18 height accuracy estimate available here.
 JV1857
 JV1857.Click photographs - Photos may exist for this station.
 JV1857
 JV1857.The dynamic height is computed by dividing the NAVD 88
 JV1857.geopotential number by the normal gravity value computed on the
 JV1857.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1857.degrees latitude (g = 980.6199 gals.).
 JV1857
 JV1857.The modeled gravity was interpolated from observed gravity values.
 JV1857
 JV1857;                    North         East    Units  Estimated Accuracy
 JV1857;SPC MD       -   209,580.      373,140.      MT  (+/- 180 meters Scaled)
 JV1857
 JV1857_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ013808(NAD 83)
 JV1857
 JV1857                          SUPERSEDED SURVEY CONTROL
 JV1857
 JV1857  NGVD 29 (11/26/84)  132.567  (m)          434.93   (f) ADJUSTED    2 0
 JV1857
 JV1857.Superseded values are not recommended for survey control.
 JV1857
 JV1857.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1857.See file dsdata.pdf to determine how the superseded data were derived.
 JV1857
 JV1857_MARKER: Q = CHISELED SQUARE
 JV1857_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1857_SP_SET: STEP
 JV1857_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1857
 JV1857  HISTORY     - Date     Condition        Report By
 JV1857  HISTORY     - UNK      MONUMENTED       PRR
 JV1857  HISTORY     - 1935     GOOD             CGS
 JV1857
 JV1857                          STATION DESCRIPTION
 JV1857
 JV1857'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1857'AT LE GORE.
 JV1857'AT LE GORE, FREDERICK COUNTY, AT THE PENNSYLVANIA RAILROAD
 JV1857'STATION, ON THE TOP OF THE NORTH END OF THE STONE STEP, AND 36
 JV1857'FEET EAST OF THE CENTER LINE OF THE MAIN TRACK.  A CHISELED
 JV1857'SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2604 ***********************************************************************
 JV2604  DESIGNATION -  536
 JV2604  PID         -  JV2604
 JV2604  STATE/COUNTY-  MD/MONTGOMERY
 JV2604  COUNTRY     -  US
 JV2604  USGS QUAD   -  GAITHERSBURG (2016)
 JV2604
 JV2604                         *CURRENT SURVEY CONTROL
 JV2604  ______________________________________________________________________
 JV2604* NAD 83(1986) POSITION- 39 08 24.     (N) 077 11 38.     (W)   SCALED
 JV2604* NAVD 88 ORTHO HEIGHT -   152.982 (meters)      501.91  (feet) POSTED
 JV2604  ______________________________________________________________________
 JV2604  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 JV2604  DYNAMIC HEIGHT  -        152.90  (meters)      501.6   (feet) COMP
 JV2604  MODELED GRAVITY -    980,097.4   (mgal)                       NAVD 88
 JV2604
 JV2604  VERT ORDER      -  * POSTED, SEE BELOW
 JV2604
 JV2604.The horizontal coordinates were scaled from a map and have
 JV2604.an estimated accuracy of +/- 6 seconds.
 JV2604
 JV2604.The orthometric height was determined by differential leveling
 JV2604.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV2604
 JV2604.* This is a POSTED BENCH MARK height.
 JV2604
 JV2604.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2604.GEOID18 height accuracy estimate available here.
 JV2604
 JV2604.Click photographs - Photos may exist for this station.
 JV2604
 JV2604.The dynamic height is computed by dividing the NAVD 88
 JV2604.geopotential number by the normal gravity value computed on the
 JV2604.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2604.degrees latitude (g = 980.6199 gals.).
 JV2604
 JV2604.The modeled gravity was interpolated from observed gravity values.
 JV2604
 JV2604;                    North         East    Units  Estimated Accuracy
 JV2604;SPC MD       -   163,570.      383,240.      MT  (+/- 180 meters Scaled)
 JV2604
 JV2604_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ103346(NAD 83)
 JV2604
 JV2604                          SUPERSEDED SURVEY CONTROL
 JV2604
 JV2604  NGVD 29 (11/26/84)  153.193  (m)          502.60   (f) ADJUSTED    2 0
 JV2604
 JV2604.Superseded values are not recommended for survey control.
 JV2604
 JV2604.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2604.See file dsdata.pdf to determine how the superseded data were derived.
 JV2604
 JV2604_MARKER: Z = SEE DESCRIPTION
 JV2604_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV2604_SP_SET: CULVERT HEADWALL
 JV2604_STAMPING: 536
 JV2604_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2604+STABILITY: SURFACE MOTION
 JV2604
 JV2604  HISTORY     - Date     Condition        Report By
 JV2604  HISTORY     - UNK      MONUMENTED       WSSC
 JV2604  HISTORY     - 1946     GOOD             WSSC
 JV2604
 JV2604                          STATION DESCRIPTION
 JV2604
 JV2604'DESCRIBED BY WASH SUBURB SAN COMM 1946
 JV2604'IN GAITHERSBURG.
 JV2604'ON WEST SIDE OF SUMMIT AVENUE, ABOUT 500 FEET SOUTH OF B AND O
 JV2604'RR, OPPOSITE CHURCHILLS DRIVEWAY WHICH IS MARKED BY TWO WHITE
 JV2604'STONE POSTS, 4 FEET EAST OF SIDEWALK, AT SOUTH EDGE OF CONCRETE
 JV2604'CULVERT.  A WSSC STANDARD LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2611 ***********************************************************************
 JV2611  DESIGNATION -  539
 JV2611  PID         -  JV2611
 JV2611  STATE/COUNTY-  MD/MONTGOMERY
 JV2611  COUNTRY     -  US
 JV2611  USGS QUAD   -  GAITHERSBURG (2016)
 JV2611
 JV2611                         *CURRENT SURVEY CONTROL
 JV2611  ______________________________________________________________________
 JV2611* NAD 83(1986) POSITION- 39 08 17.     (N) 077 11 54.     (W)   SCALED
 JV2611* NAVD 88 ORTHO HEIGHT -   155.790 (meters)      511.12  (feet) POSTED
 JV2611  ______________________________________________________________________
 JV2611  GEOID HEIGHT    -        -31.735 (meters)                     GEOID18
 JV2611  DYNAMIC HEIGHT  -        155.71  (meters)      510.9   (feet) COMP
 JV2611  MODELED GRAVITY -    980,097.8   (mgal)                       NAVD 88
 JV2611
 JV2611  VERT ORDER      -  * POSTED, SEE BELOW
 JV2611
 JV2611.The horizontal coordinates were scaled from a map and have
 JV2611.an estimated accuracy of +/- 6 seconds.
 JV2611
 JV2611.The orthometric height was determined by differential leveling
 JV2611.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV2611
 JV2611.* This is a POSTED BENCH MARK height.
 JV2611
 JV2611.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2611.GEOID18 height accuracy estimate available here.
 JV2611
 JV2611.Click photographs - Photos may exist for this station.
 JV2611
 JV2611.The dynamic height is computed by dividing the NAVD 88
 JV2611.geopotential number by the normal gravity value computed on the
 JV2611.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2611.degrees latitude (g = 980.6199 gals.).
 JV2611
 JV2611.The modeled gravity was interpolated from observed gravity values.
 JV2611
 JV2611;                    North         East    Units  Estimated Accuracy
 JV2611;SPC MD       -   163,350.      382,850.      MT  (+/- 180 meters Scaled)
 JV2611
 JV2611_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ100343(NAD 83)
 JV2611
 JV2611                          SUPERSEDED SURVEY CONTROL
 JV2611
 JV2611  NGVD 29 (11/26/84)  156.000  (m)          511.81   (f) ADJUSTED    2 0
 JV2611
 JV2611.Superseded values are not recommended for survey control.
 JV2611
 JV2611.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2611.See file dsdata.pdf to determine how the superseded data were derived.
 JV2611
 JV2611_MARKER: Z = SEE DESCRIPTION
 JV2611_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV2611_SP_SET: STEP
 JV2611_STAMPING: 539
 JV2611_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2611
 JV2611  HISTORY     - Date     Condition        Report By
 JV2611  HISTORY     - UNK      MONUMENTED       WSSC
 JV2611  HISTORY     - 1946     GOOD             CGS
 JV2611  HISTORY     - 1968     GOOD             CGS
 JV2611
 JV2611                          STATION DESCRIPTION
 JV2611
 JV2611'DESCRIBED BY COAST AND GEODETIC SURVEY 1946
 JV2611'IN GAITHERSBURG.
 JV2611'AT THE CORNER OF CEDAR AND GEORGE STREETS, AT THE HOUSE IN THE
 JV2611'NORTHEAST QUADRANT OF THE INTERSECTION, AND IN THE SOUTH SIDE OF
 JV2611'THE CONCRETE STEPS LEADING TO THE PORCH.  NOTE-- LAG SCREW IS
 JV2611'SET HORIZONTALLY AND ROD WAS HELD ON UPPER SURFACE OF SQUARE
 JV2611'HEAD.  IT IS IMPOSSIBLE TO PLUMB THE STANDARD LENGTH PRECISE-LEVEL
 JV2611'ROD BECAUSE OF OVERHANGING EAVES OF PORCH ROOF.
 JV2611
 JV2611                          STATION RECOVERY (1968)
 JV2611
 JV2611'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968
 JV2611'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2940 ***********************************************************************
 JV2940  DESIGNATION -  54
 JV2940  PID         -  JV2940
 JV2940  STATE/COUNTY-  MD/WASHINGTON
 JV2940  COUNTRY     -  US
 JV2940  USGS QUAD   -  HARPERS FERRY (2016)
 JV2940
 JV2940                         *CURRENT SURVEY CONTROL
 JV2940  ______________________________________________________________________
 JV2940* NAD 83(1986) POSITION- 39 19 43.     (N) 077 41 02.     (W)   SCALED
 JV2940* NAVD 88 ORTHO HEIGHT -    78.486 (meters)      257.50  (feet) ADJUSTED
 JV2940  ______________________________________________________________________
 JV2940  GEOID HEIGHT    -        -33.277 (meters)                     GEOID18
 JV2940  DYNAMIC HEIGHT  -         78.442 (meters)      257.36  (feet) COMP
 JV2940  MODELED GRAVITY -    980,062.3   (mgal)                       NAVD 88
 JV2940
 JV2940  VERT ORDER      -  FIRST     CLASS II
 JV2940
 JV2940.The horizontal coordinates were scaled from a map and have
 JV2940.an estimated accuracy of +/- 6 seconds.
 JV2940
 JV2940.The orthometric height was determined by differential leveling and
 JV2940.adjusted by the NATIONAL GEODETIC SURVEY
 JV2940.in June 1991.
 JV2940
 JV2940.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2940.GEOID18 height accuracy estimate available here.
 JV2940
 JV2940.Click photographs - Photos may exist for this station.
 JV2940
 JV2940.The dynamic height is computed by dividing the NAVD 88
 JV2940.geopotential number by the normal gravity value computed on the
 JV2940.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2940.degrees latitude (g = 980.6199 gals.).
 JV2940
 JV2940.The modeled gravity was interpolated from observed gravity values.
 JV2940
 JV2940;                    North         East    Units  Estimated Accuracy
 JV2940;SPC MD       -   184,710.      341,030.      MT  (+/- 180 meters Scaled)
 JV2940
 JV2940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ686566(NAD 83)
 JV2940
 JV2940                          SUPERSEDED SURVEY CONTROL
 JV2940
 JV2940  NGVD 29 (11/26/84)   78.690  (m)          258.17   (f) ADJUSTED    1 2
 JV2940
 JV2940.Superseded values are not recommended for survey control.
 JV2940
 JV2940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2940.See file dsdata.pdf to determine how the superseded data were derived.
 JV2940
 JV2940_MARKER: B = BOLT
 JV2940_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV2940_SP_SET: CULVERT HEADWALL
 JV2940_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2940+STABILITY: SURFACE MOTION
 JV2940_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2940+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2020
 JV2940
 JV2940  HISTORY     - Date     Condition        Report By
 JV2940  HISTORY     - UNK      MONUMENTED       BORR
 JV2940  HISTORY     - 1938     GOOD             CGS
 JV2940  HISTORY     - 20100426 GOOD             NAGEL
 JV2940  HISTORY     - 20200516 GOOD             NGS
 JV2940
 JV2940                          STATION DESCRIPTION
 JV2940
 JV2940'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2940'AT WEVERTON.
 JV2940'ABOUT 800 FEET WEST OF THE BALTIMORE AND OHIO RAILROAD STATION
 JV2940'AT WEVERTON, WASHINGTON COUNTY, AT LIMESTONE-BLOCK CULVERT 39,
 JV2940'AND IN THE WEST STONE OF THE NORTH HEADWALL.  A COPPER BOLT.
 JV2940
 JV2940                          STATION RECOVERY (2010)
 JV2940
 JV2940'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2010 (GEN)
 JV2940'THE LIMESTONE CULVERT DESCRIBED IN 1938 IS THE CULVERT OVER ISRAEL
 JV2940'CREEK.
 JV2940
 JV2940                          STATION RECOVERY (2020)
 JV2940
 JV2940'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (JH)
 JV2940'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1855 ***********************************************************************
 JV1855  DESIGNATION -  54 PRR
 JV1855  PID         -  JV1855
 JV1855  STATE/COUNTY-  MD/FREDERICK
 JV1855  COUNTRY     -  US
 JV1855  USGS QUAD   -  WOODSBORO (2016)
 JV1855
 JV1855                         *CURRENT SURVEY CONTROL
 JV1855  ______________________________________________________________________
 JV1855* NAD 83(1986) POSITION- 39 32 35.     (N) 077 18 58.     (W)   SCALED
 JV1855* NAVD 88 ORTHO HEIGHT -   121.728 (meters)      399.37  (feet) ADJUSTED
 JV1855  ______________________________________________________________________
 JV1855  GEOID HEIGHT    -        -32.873 (meters)                     GEOID18
 JV1855  DYNAMIC HEIGHT  -        121.662 (meters)      399.15  (feet) COMP
 JV1855  MODELED GRAVITY -    980,087.1   (mgal)                       NAVD 88
 JV1855
 JV1855  VERT ORDER      -  SECOND    CLASS 0
 JV1855
 JV1855.The horizontal coordinates were scaled from a map and have
 JV1855.an estimated accuracy of +/- 6 seconds.
 JV1855
 JV1855.The orthometric height was determined by differential leveling and
 JV1855.adjusted by the NATIONAL GEODETIC SURVEY
 JV1855.in June 1991.
 JV1855
 JV1855.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1855.GEOID18 height accuracy estimate available here.
 JV1855
 JV1855.Click photographs - Photos may exist for this station.
 JV1855
 JV1855.The dynamic height is computed by dividing the NAVD 88
 JV1855.geopotential number by the normal gravity value computed on the
 JV1855.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1855.degrees latitude (g = 980.6199 gals.).
 JV1855
 JV1855.The modeled gravity was interpolated from observed gravity values.
 JV1855
 JV1855;                    North         East    Units  Estimated Accuracy
 JV1855;SPC MD       -   208,340.      372,830.      MT  (+/- 180 meters Scaled)
 JV1855
 JV1855_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ009796(NAD 83)
 JV1855
 JV1855                          SUPERSEDED SURVEY CONTROL
 JV1855
 JV1855  NGVD 29 (11/26/84)  121.936  (m)          400.05   (f) ADJUSTED    2 0
 JV1855
 JV1855.Superseded values are not recommended for survey control.
 JV1855
 JV1855.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1855.See file dsdata.pdf to determine how the superseded data were derived.
 JV1855
 JV1855_MARKER: B = BOLT
 JV1855_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1855_SP_SET: BRIDGE
 JV1855_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1855
 JV1855  HISTORY     - Date     Condition        Report By
 JV1855  HISTORY     - UNK      MONUMENTED       PRR
 JV1855  HISTORY     - 1935     GOOD             CGS
 JV1855  HISTORY     - 1942     GOOD             CGS
 JV1855
 JV1855                          STATION DESCRIPTION
 JV1855
 JV1855'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1855'0.8 MI SW FROM LE GORE.
 JV1855'ABOUT 0.8 MILE SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1855'THE STATION AT LE GORE, FREDERICK COUNTY, ABOUT 264 FEET
 JV1855'SOUTH OF MILEPOST 11, AT 8-FOOT STONE-ARCH BRIDGE 58.05, IN
 JV1855'THE TOP OF THE EAST END, AND 33 FEET EAST OF THE CENTER LINE OF
 JV1855'THE TRACK.  AN IRON BOLT.
 JV1855
 JV1855                          STATION RECOVERY (1942)
 JV1855
 JV1855'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV1855'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1835 ***********************************************************************
 JV1835  DESIGNATION -  54.63 WMRR
 JV1835  PID         -  JV1835
 JV1835  STATE/COUNTY-  MD/FREDERICK
 JV1835  COUNTRY     -  US
 JV1835  USGS QUAD   -  WOODSBORO (2016)
 JV1835
 JV1835                         *CURRENT SURVEY CONTROL
 JV1835  ______________________________________________________________________
 JV1835* NAD 83(1986) POSITION- 39 36 19.     (N) 077 19 49.     (W)   SCALED
 JV1835* NAVD 88 ORTHO HEIGHT -   111.883 (meters)      367.07  (feet) ADJUSTED
 JV1835  ______________________________________________________________________
 JV1835  GEOID HEIGHT    -        -33.068 (meters)                     GEOID18
 JV1835  DYNAMIC HEIGHT  -        111.823 (meters)      366.87  (feet) COMP
 JV1835  MODELED GRAVITY -    980,089.9   (mgal)                       NAVD 88
 JV1835
 JV1835  VERT ORDER      -  SECOND    CLASS 0
 JV1835
 JV1835.The horizontal coordinates were scaled from a map and have
 JV1835.an estimated accuracy of +/- 6 seconds.
 JV1835
 JV1835.The orthometric height was determined by differential leveling and
 JV1835.adjusted by the NATIONAL GEODETIC SURVEY
 JV1835.in June 1991.
 JV1835
 JV1835.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1835.GEOID18 height accuracy estimate available here.
 JV1835
 JV1835.Click photographs - Photos may exist for this station.
 JV1835
 JV1835.The dynamic height is computed by dividing the NAVD 88
 JV1835.geopotential number by the normal gravity value computed on the
 JV1835.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1835.degrees latitude (g = 980.6199 gals.).
 JV1835
 JV1835.The modeled gravity was interpolated from observed gravity values.
 JV1835
 JV1835;                    North         East    Units  Estimated Accuracy
 JV1835;SPC MD       -   215,260.      371,630.      MT  (+/- 180 meters Scaled)
 JV1835
 JV1835_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ999865(NAD 83)
 JV1835
 JV1835                          SUPERSEDED SURVEY CONTROL
 JV1835
 JV1835  NGVD 29 (11/26/84)  112.092  (m)          367.76   (f) ADJUSTED    2 0
 JV1835
 JV1835.Superseded values are not recommended for survey control.
 JV1835
 JV1835.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1835.See file dsdata.pdf to determine how the superseded data were derived.
 JV1835
 JV1835_MARKER: B = BOLT
 JV1835_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1835_SP_SET: BRIDGE
 JV1835_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1835
 JV1835  HISTORY     - Date     Condition        Report By
 JV1835  HISTORY     - UNK      MONUMENTED       WMRR
 JV1835  HISTORY     - 1935     GOOD             CGS
 JV1835  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV1835  HISTORY     - 20081112 MARK NOT FOUND   GEOCAC
 JV1835
 JV1835                          STATION DESCRIPTION
 JV1835
 JV1835'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1835'0.3 MI W FROM EMMITSBURG JUNCTION.
 JV1835'ABOUT 0.3 MILE WEST ALONG THE WESTERN MARYLAND RAILWAY FROM THE
 JV1835'STATION AT EMMITSBURG JUNCTION, FREDERICK COUNTY, ABOUT 0.4 MILE
 JV1835'EAST OF MILEPOST 55, IN THE TOP OF THE SOUTHWEST HEAD WALL OF
 JV1835'BRIDGE 54.63, MIDWAY BETWEEN THE LOYS 1 MILE AND MONOCACY 1 MILE
 JV1835'SIGNS, AND 10 FEET SOUTH OF THE CENTER LINE OF THE TRACK.  A
 JV1835'COPPER BOLT.
 JV1835
 JV1835                          STATION RECOVERY (1953)
 JV1835
 JV1835'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JV1835'MARK NOT FOUND.
 JV1835
 JV1835                          STATION RECOVERY (2008)
 JV1835
 JV1835'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV1835'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1834 ***********************************************************************
 JV1834  DESIGNATION -  54.96 WMRR
 JV1834  PID         -  JV1834
 JV1834  STATE/COUNTY-  MD/FREDERICK
 JV1834  COUNTRY     -  US
 JV1834  USGS QUAD   -  WOODSBORO (2016)
 JV1834
 JV1834                         *CURRENT SURVEY CONTROL
 JV1834  ______________________________________________________________________
 JV1834* NAD 83(1986) POSITION- 39 36 25.     (N) 077 20 11.     (W)   SCALED
 JV1834* NAVD 88 ORTHO HEIGHT -   105.344 (meters)      345.62  (feet) ADJUSTED
 JV1834  ______________________________________________________________________
 JV1834  GEOID HEIGHT    -        -33.079 (meters)                     GEOID18
 JV1834  DYNAMIC HEIGHT  -        105.287 (meters)      345.43  (feet) COMP
 JV1834  MODELED GRAVITY -    980,090.6   (mgal)                       NAVD 88
 JV1834
 JV1834  VERT ORDER      -  SECOND    CLASS 0
 JV1834
 JV1834.The horizontal coordinates were scaled from a map and have
 JV1834.an estimated accuracy of +/- 6 seconds.
 JV1834
 JV1834.The orthometric height was determined by differential leveling and
 JV1834.adjusted by the NATIONAL GEODETIC SURVEY
 JV1834.in June 1991.
 JV1834
 JV1834.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1834.GEOID18 height accuracy estimate available here.
 JV1834
 JV1834.Click photographs - Photos may exist for this station.
 JV1834
 JV1834.The dynamic height is computed by dividing the NAVD 88
 JV1834.geopotential number by the normal gravity value computed on the
 JV1834.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1834.degrees latitude (g = 980.6199 gals.).
 JV1834
 JV1834.The modeled gravity was interpolated from observed gravity values.
 JV1834
 JV1834;                    North         East    Units  Estimated Accuracy
 JV1834;SPC MD       -   215,440.      371,110.      MT  (+/- 180 meters Scaled)
 JV1834
 JV1834_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ994867(NAD 83)
 JV1834
 JV1834                          SUPERSEDED SURVEY CONTROL
 JV1834
 JV1834  NGVD 29 (11/26/84)  105.554  (m)          346.31   (f) ADJUSTED    2 0
 JV1834
 JV1834.Superseded values are not recommended for survey control.
 JV1834
 JV1834.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1834.See file dsdata.pdf to determine how the superseded data were derived.
 JV1834
 JV1834_MARKER: B = BOLT
 JV1834_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1834_SP_SET: BRIDGE
 JV1834_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1834
 JV1834  HISTORY     - Date     Condition        Report By
 JV1834  HISTORY     - UNK      MONUMENTED       WMRR
 JV1834  HISTORY     - 1935     GOOD             CGS
 JV1834  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV1834
 JV1834                          STATION DESCRIPTION
 JV1834
 JV1834'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1834'0.7 MI W FROM EMMITSBURG JUNCTION.
 JV1834'ABOUT 0.7 MILE WEST ALONG THE WESTERN MARYLAND RAILWAY FROM THE
 JV1834'STATION AT EMMITSBURG JUNCTION, FREDERICK COUNTY, ABOUT 0.4
 JV1834'MILE EAST OF MILEPOST 55, IN THE TOP OF THE SOUTHEAST HEAD WALL
 JV1834'OF BRIDGE 54.96, AND 10 FEET SOUTH OF THE CENTER LINE OF THE
 JV1834'TRACK.  A COPPER BOLT.
 JV1834
 JV1834                          STATION RECOVERY (1953)
 JV1834
 JV1834'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JV1834'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2959 ***********************************************************************
 JV2959  DESIGNATION -  547
 JV2959  PID         -  JV2959
 JV2959  STATE/COUNTY-  MD/FREDERICK
 JV2959  COUNTRY     -  US
 JV2959  USGS QUAD   -  MIDDLETOWN (2016)
 JV2959
 JV2959                         *CURRENT SURVEY CONTROL
 JV2959  ______________________________________________________________________
 JV2959* NAD 83(1986) POSITION- 39 26 37.84   (N) 077 32 48.83   (W)   HD_HELD1
 JV2959* NAVD 88 ORTHO HEIGHT -   166.465 (meters)      546.14  (feet) ADJUSTED
 JV2959  ______________________________________________________________________
 JV2959  GEOID HEIGHT    -        -33.074 (meters)                     GEOID18
 JV2959  DYNAMIC HEIGHT  -        166.372 (meters)      545.84  (feet) COMP
 JV2959  MODELED GRAVITY -    980,067.1   (mgal)                       NAVD 88
 JV2959
 JV2959  VERT ORDER      -  SECOND    CLASS 0
 JV2959
 JV2959.The horizontal coordinates were determined by differentially corrected
 JV2959.hand held GPS observations or other comparable positioning techniques
 JV2959.and have an estimated accuracy of +/- 3 meters.
 JV2959
 JV2959.The orthometric height was determined by differential leveling and
 JV2959.adjusted by the NATIONAL GEODETIC SURVEY
 JV2959.in June 1991.
 JV2959
 JV2959.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2959.GEOID18 height accuracy estimate available here.
 JV2959
 JV2959.Click photographs - Photos may exist for this station.
 JV2959
 JV2959.The dynamic height is computed by dividing the NAVD 88
 JV2959.geopotential number by the normal gravity value computed on the
 JV2959.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2959.degrees latitude (g = 980.6199 gals.).
 JV2959
 JV2959.The modeled gravity was interpolated from observed gravity values.
 JV2959
 JV2959;                    North         East    Units  Estimated Accuracy
 JV2959;SPC MD       -   197,421.3     352,922.0     MT  (+/- 3 meters HH1 GPS) 
 JV2959
 JV2959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8083069128(NAD 83)
 JV2959
 JV2959                          SUPERSEDED SURVEY CONTROL
 JV2959
 JV2959  NGVD 29 (11/26/84)  166.678  (m)          546.84   (f) ADJUSTED    2 0
 JV2959
 JV2959.Superseded values are not recommended for survey control.
 JV2959
 JV2959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2959.See file dsdata.pdf to determine how the superseded data were derived.
 JV2959
 JV2959_MARKER: DB = BENCH MARK DISK
 JV2959_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2959_SP_SET: BUILDING
 JV2959_STAMPING: 547 MARYLAND ADJ
 JV2959_MARK LOGO: USGS
 JV2959_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2959_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2959+SATELLITE: SATELLITE OBSERVATIONS - November 28, 2010
 JV2959
 JV2959  HISTORY     - Date     Condition        Report By
 JV2959  HISTORY     - 1907     MONUMENTED       USGS
 JV2959  HISTORY     - 1942     GOOD             CGS
 JV2959  HISTORY     - 20101128 GOOD             GEOCAC
 JV2959
 JV2959                          STATION DESCRIPTION
 JV2959
 JV2959'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2959'AT MIDDLETOWN.
 JV2959'AT MIDDLETOWN, FREDERICK COUNTY, ON U.S. HIGHWAY 40, AT THE
 JV2959'INTERSECTION OF JEFFERSON STREET, 76.5 FEET SOUTHEAST ACROSS THE
 JV2959'HIGHWAY FROM THE EAST CORNER OF THE ZION EVANGELICAL LUTHERAN
 JV2959'CHURCH, 46.7 FEET WEST OF THE CENTER LINE OF JEFFERSON STREET,
 JV2959'27.9 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, IN THE
 JV2959'NORTH FACE OF THE POST OFFICE BUILDING (UNOCCUPIED IN 1942),
 JV2959'AND 1.5 FEET ABOVE THE SIDEWALK.  A UNITED STATES GEOLOGICAL
 JV2959'SURVEY STANDARD DISK, STAMPED 547 MARYLAND ADJ AND SET VERTICALLY.
 JV2959
 JV2959                          STATION RECOVERY (2010)
 JV2959
 JV2959'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2959'RECOVERED IN GOOD CONDITION.
 JV2959'
 JV2959'STATION IS 6IN E OF MIDDLE DOORWAY, 3IN W OF DRAINSPOUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0799 ***********************************************************************
 HU0799  DESIGNATION -  55
 HU0799  PID         -  HU0799
 HU0799  STATE/COUNTY-  MD/CAROLINE
 HU0799  COUNTRY     -  US
 HU0799  USGS QUAD   -  HOBBS (2017)
 HU0799
 HU0799                         *CURRENT SURVEY CONTROL
 HU0799  ______________________________________________________________________
 HU0799* NAD 83(1986) POSITION- 38 51 35.     (N) 075 47 04.     (W)   SCALED
 HU0799* NAVD 88 ORTHO HEIGHT -    16.400 (meters)       53.81  (feet) ADJUSTED
 HU0799  ______________________________________________________________________
 HU0799  GEOID HEIGHT    -        -34.988 (meters)                     GEOID18
 HU0799  DYNAMIC HEIGHT  -         16.390 (meters)       53.77  (feet) COMP
 HU0799  MODELED GRAVITY -    980,036.7   (mgal)                       NAVD 88
 HU0799
 HU0799  VERT ORDER      -  SECOND    CLASS 0
 HU0799
 HU0799.The horizontal coordinates were scaled from a map and have
 HU0799.an estimated accuracy of +/- 6 seconds.
 HU0799
 HU0799.The orthometric height was determined by differential leveling and
 HU0799.adjusted by the NATIONAL GEODETIC SURVEY
 HU0799.in June 1991.
 HU0799
 HU0799.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0799.GEOID18 height accuracy estimate available here.
 HU0799
 HU0799.Click photographs - Photos may exist for this station.
 HU0799
 HU0799.The dynamic height is computed by dividing the NAVD 88
 HU0799.geopotential number by the normal gravity value computed on the
 HU0799.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0799.degrees latitude (g = 980.6199 gals.).
 HU0799
 HU0799.The modeled gravity was interpolated from observed gravity values.
 HU0799
 HU0799;                    North         East    Units  Estimated Accuracy
 HU0799;SPC MD       -   133,140.      505,500.      MT  (+/- 180 meters Scaled)
 HU0799
 HU0799_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ319015(NAD 83)
 HU0799
 HU0799                          SUPERSEDED SURVEY CONTROL
 HU0799
 HU0799  NGVD 29 (11/26/84)   16.641  (m)           54.60   (f) ADJUSTED    2 0
 HU0799
 HU0799.Superseded values are not recommended for survey control.
 HU0799
 HU0799.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0799.See file dsdata.pdf to determine how the superseded data were derived.
 HU0799
 HU0799_MARKER: P = PIPE CAP
 HU0799_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HU0799_STAMPING: 55 ADJ 1903
 HU0799_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0799
 HU0799  HISTORY     - Date     Condition        Report By
 HU0799  HISTORY     - 1903     MONUMENTED       USGS
 HU0799  HISTORY     - 1943     GOOD             CGS
 HU0799  HISTORY     - 19901029 MARK NOT FOUND   NGS
 HU0799
 HU0799                          STATION DESCRIPTION
 HU0799
 HU0799'DESCRIBED BY COAST AND GEODETIC SURVEY 1943
 HU0799'AT HOBBS.
 HU0799'AT HOBBS, CAROLINE COUNTY, ABOUT 120 FEET NORTHEAST OF THE 1935
 HU0799'SITE OF THE MARYLAND AND DELAWARE SEACOAST RAILROAD STATION, 48
 HU0799'FEET NORTH OF THE 1935 LOCATION OF THE NORTH RAIL, 22 FEET
 HU0799'SOUTHWEST OF THE SOUTHWEST CORNER OF THE B.B. ALLEN HOUSE, 21 FEET
 HU0799'EAST OF THE CENTER LINE OF MAIN STREET, AND 8 FEET NORTH OF A
 HU0799'GATEPOST.  A UNITED STATES GEOLOGICAL SURVEY STANDARD CAP, STAMPED
 HU0799'55 ADJ 1903 AND RIVETED ON THE TOP OF AN IRON PIPE PROJECTING
 HU0799'ABOUT 11 INCHES ABOVE GROUND.  NOTE-- THE RAILROAD STATION HAS
 HU0799'BEEN RAZED, THE TRACKS HAVE BEEN REMOVED FROM THE ROADBED.
 HU0799
 HU0799                          STATION RECOVERY (1990)
 HU0799
 HU0799'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0799'THE DESCRIBED AREA IS NOW A CULTIVATED FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1854 ***********************************************************************
 JV1854  DESIGNATION -  55 PRR
 JV1854  PID         -  JV1854
 JV1854  STATE/COUNTY-  MD/FREDERICK
 JV1854  COUNTRY     -  US
 JV1854  USGS QUAD   -  WOODSBORO (2016)
 JV1854
 JV1854                         *CURRENT SURVEY CONTROL
 JV1854  ______________________________________________________________________
 JV1854* NAD 83(1986) POSITION- 39 32 20.     (N) 077 19 00.     (W)   SCALED
 JV1854* NAVD 88 ORTHO HEIGHT -   125.198 (meters)      410.75  (feet) ADJUSTED
 JV1854  ______________________________________________________________________
 JV1854  GEOID HEIGHT    -        -32.862 (meters)                     GEOID18
 JV1854  DYNAMIC HEIGHT  -        125.131 (meters)      410.53  (feet) COMP
 JV1854  MODELED GRAVITY -    980,087.2   (mgal)                       NAVD 88
 JV1854
 JV1854  VERT ORDER      -  SECOND    CLASS 0
 JV1854
 JV1854.The horizontal coordinates were scaled from a map and have
 JV1854.an estimated accuracy of +/- 6 seconds.
 JV1854
 JV1854.The orthometric height was determined by differential leveling and
 JV1854.adjusted by the NATIONAL GEODETIC SURVEY
 JV1854.in June 1991.
 JV1854
 JV1854.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1854.GEOID18 height accuracy estimate available here.
 JV1854
 JV1854.Click photographs - Photos may exist for this station.
 JV1854
 JV1854.The dynamic height is computed by dividing the NAVD 88
 JV1854.geopotential number by the normal gravity value computed on the
 JV1854.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1854.degrees latitude (g = 980.6199 gals.).
 JV1854
 JV1854.The modeled gravity was interpolated from observed gravity values.
 JV1854
 JV1854;                    North         East    Units  Estimated Accuracy
 JV1854;SPC MD       -   207,880.      372,780.      MT  (+/- 180 meters Scaled)
 JV1854
 JV1854_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ009791(NAD 83)
 JV1854
 JV1854                          SUPERSEDED SURVEY CONTROL
 JV1854
 JV1854  NGVD 29 (11/26/84)  125.407  (m)          411.44   (f) ADJUSTED    2 0
 JV1854
 JV1854.Superseded values are not recommended for survey control.
 JV1854
 JV1854.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1854.See file dsdata.pdf to determine how the superseded data were derived.
 JV1854
 JV1854_MARKER: B = BOLT
 JV1854_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1854_SP_SET: STEP
 JV1854_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1854
 JV1854  HISTORY     - Date     Condition        Report By
 JV1854  HISTORY     - UNK      MONUMENTED       PRR
 JV1854  HISTORY     - 1935     GOOD             CGS
 JV1854  HISTORY     - 20080523 MARK NOT FOUND   GEOCAC
 JV1854
 JV1854                          STATION DESCRIPTION
 JV1854
 JV1854'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1854'1.1 MI SW FROM LE GORE.
 JV1854'ABOUT 1.1 MILES SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1854'THE STATION AT LE GORE, FREDERICK COUNTY, AT THE STATION AT
 JV1854'WOODSBORO, 15 FEET NORTHEAST OF THE STATION DOOR, IN THE TOP OF
 JV1854'THE NORTHWEST CORNER OF THE STONE STEP, AND 21 FEET EAST OF
 JV1854'THE CENTER LINE OF THE MAIN TRACK.  AN IRON BOLT.
 JV1854
 JV1854                          STATION RECOVERY (2008)
 JV1854
 JV1854'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV1854'THERE IS A BUILDING IN VERY POOR CONDITION AT APPROXIMATELY THE
 JV1854'DESCRIBED LOCATION AND THE ONLY ONE ON THE EAST SIDE OF THE TRACKS.
 JV1854'MOST OF THE STONE STEPS FOR THE BUILDING HAVE BEEN REMOVED, LEAVING
 JV1854'ONLY THE FOUNDATIONS AND NO SET BOLT THAT I COULD FIND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0798 ***********************************************************************
 JV0798  DESIGNATION -  5520 C OF B
 JV0798  PID         -  JV0798
 JV0798  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0798  COUNTRY     -  US
 JV0798  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0798
 JV0798                         *CURRENT SURVEY CONTROL
 JV0798  ______________________________________________________________________
 JV0798* NAD 83(1986) POSITION- 39 18 33.     (N) 076 39 38.     (W)   SCALED
 JV0798* NAVD 88 ORTHO HEIGHT -    70.492 (meters)      231.27  (feet) ADJUSTED
 JV0798  ______________________________________________________________________
 JV0798  GEOID HEIGHT    -        -32.541 (meters)                     GEOID18
 JV0798  DYNAMIC HEIGHT  -         70.455 (meters)      231.15  (feet) COMP
 JV0798  MODELED GRAVITY -    980,107.5   (mgal)                       NAVD 88
 JV0798
 JV0798  VERT ORDER      -  SECOND    CLASS 0
 JV0798
 JV0798.The horizontal coordinates were scaled from a map and have
 JV0798.an estimated accuracy of +/- 6 seconds.
 JV0798
 JV0798.The orthometric height was determined by differential leveling and
 JV0798.adjusted by the NATIONAL GEODETIC SURVEY
 JV0798.in June 1991.
 JV0798
 JV0798.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0798.GEOID18 height accuracy estimate available here.
 JV0798
 JV0798.Click photographs - Photos may exist for this station.
 JV0798
 JV0798.The dynamic height is computed by dividing the NAVD 88
 JV0798.geopotential number by the normal gravity value computed on the
 JV0798.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0798.degrees latitude (g = 980.6199 gals.).
 JV0798
 JV0798.The modeled gravity was interpolated from observed gravity values.
 JV0798
 JV0798;                    North         East    Units  Estimated Accuracy
 JV0798;SPC MD       -   182,380.      429,280.      MT  (+/- 180 meters Scaled)
 JV0798
 JV0798_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ568524(NAD 83)
 JV0798
 JV0798                          SUPERSEDED SURVEY CONTROL
 JV0798
 JV0798  NGVD 29 (11/26/84)   70.719  (m)          232.02   (f) ADJUSTED    2 0
 JV0798
 JV0798.Superseded values are not recommended for survey control.
 JV0798
 JV0798.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0798.See file dsdata.pdf to determine how the superseded data were derived.
 JV0798
 JV0798_MARKER: Z = SEE DESCRIPTION
 JV0798_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0798_SP_SET: WINGWALL
 JV0798_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0798
 JV0798  HISTORY     - Date     Condition        Report By
 JV0798  HISTORY     - UNK      MONUMENTED       MD0050
 JV0798  HISTORY     - 1935     GOOD             CGS
 JV0798  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV0798
 JV0798                          STATION DESCRIPTION
 JV0798
 JV0798'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV0798'AT BALTIMORE.
 JV0798'(CITY OF BALTIMORE) ON THE TOP OF THE NORTH WING OF THE CONCRETE
 JV0798'STEP TO THE WESTERN MARYLAND RAILROAD PLATFORM AT NORTH AVENUE.
 JV0798'0.6 FOOT FROM THE NORTH FACE OF THE WINGWALL AND 0.5 FOOT
 JV0798'FROM WEST END OF THE WINGWALL.  A BRASS SCREW.
 JV0798
 JV0798                          STATION RECOVERY (2003)
 JV0798
 JV0798'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0798'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1208 ***********************************************************************
 JV1208  DESIGNATION -  5539 C OF B
 JV1208  PID         -  JV1208
 JV1208  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1208  COUNTRY     -  US
 JV1208  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1208
 JV1208                         *CURRENT SURVEY CONTROL
 JV1208  ______________________________________________________________________
 JV1208* NAD 83(1986) POSITION- 39 19 39.     (N) 076 38 29.     (W)   SCALED
 JV1208* NAVD 88 ORTHO HEIGHT -    41.574 (meters)      136.40  (feet) ADJUSTED
 JV1208  ______________________________________________________________________
 JV1208  GEOID HEIGHT    -        -32.570 (meters)                     GEOID18
 JV1208  DYNAMIC HEIGHT  -         41.552 (meters)      136.33  (feet) COMP
 JV1208  MODELED GRAVITY -    980,104.1   (mgal)                       NAVD 88
 JV1208
 JV1208  VERT ORDER      -  SECOND    CLASS 0
 JV1208
 JV1208.The horizontal coordinates were scaled from a map and have
 JV1208.an estimated accuracy of +/- 6 seconds.
 JV1208
 JV1208.The orthometric height was determined by differential leveling and
 JV1208.adjusted by the NATIONAL GEODETIC SURVEY
 JV1208.in June 1991.
 JV1208
 JV1208.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1208.GEOID18 height accuracy estimate available here.
 JV1208
 JV1208.Click photographs - Photos may exist for this station.
 JV1208
 JV1208.The dynamic height is computed by dividing the NAVD 88
 JV1208.geopotential number by the normal gravity value computed on the
 JV1208.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1208.degrees latitude (g = 980.6199 gals.).
 JV1208
 JV1208.The modeled gravity was interpolated from observed gravity values.
 JV1208
 JV1208;                    North         East    Units  Estimated Accuracy
 JV1208;SPC MD       -   184,420.      430,920.      MT  (+/- 180 meters Scaled)
 JV1208
 JV1208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ585544(NAD 83)
 JV1208
 JV1208                          SUPERSEDED SURVEY CONTROL
 JV1208
 JV1208  NGVD 29 (11/26/84)   41.806  (m)          137.16   (f) ADJUSTED    2 0
 JV1208
 JV1208.Superseded values are not recommended for survey control.
 JV1208
 JV1208.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1208.See file dsdata.pdf to determine how the superseded data were derived.
 JV1208
 JV1208_MARKER: Q = CHISELED SQUARE
 JV1208_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1208_SP_SET: PROPERTY MARKER
 JV1208_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1208
 JV1208  HISTORY     - Date     Condition        Report By
 JV1208  HISTORY     - UNK      MONUMENTED       MD0050
 JV1208  HISTORY     - 1935     GOOD             CGS
 JV1208
 JV1208                          STATION DESCRIPTION
 JV1208
 JV1208'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1208'AT BALTIMORE.
 JV1208'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, AT MILEPOST 3, EAST
 JV1208'OF THE TRACK AND WEST OF JONES FALLS, AT A LARGE PROPERTY STONE
 JV1208'MARKED LNR ON ONE SIDE AND WT ON THE OTHER, AND ON THE TOP OF THE
 JV1208'NORTHWEST CORNER.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0795 ***********************************************************************
 JV0795  DESIGNATION -  5548 A C OF B
 JV0795  PID         -  JV0795
 JV0795  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0795  COUNTRY     -  US
 JV0795  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0795
 JV0795                         *CURRENT SURVEY CONTROL
 JV0795  ______________________________________________________________________
 JV0795* NAD 83(1986) POSITION- 39 18 54.     (N) 076 39 36.     (W)   SCALED
 JV0795* NAVD 88 ORTHO HEIGHT -    81.975 (meters)      268.95  (feet) ADJUSTED
 JV0795  ______________________________________________________________________
 JV0795  GEOID HEIGHT    -        -32.531 (meters)                     GEOID18
 JV0795  DYNAMIC HEIGHT  -         81.933 (meters)      268.81  (feet) COMP
 JV0795  MODELED GRAVITY -    980,107.2   (mgal)                       NAVD 88
 JV0795
 JV0795  VERT ORDER      -  SECOND    CLASS 0
 JV0795
 JV0795.The horizontal coordinates were scaled from a map and have
 JV0795.an estimated accuracy of +/- 6 seconds.
 JV0795
 JV0795.The orthometric height was determined by differential leveling and
 JV0795.adjusted by the NATIONAL GEODETIC SURVEY
 JV0795.in June 1991.
 JV0795
 JV0795.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0795.GEOID18 height accuracy estimate available here.
 JV0795
 JV0795.Click photographs - Photos may exist for this station.
 JV0795
 JV0795.The dynamic height is computed by dividing the NAVD 88
 JV0795.geopotential number by the normal gravity value computed on the
 JV0795.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0795.degrees latitude (g = 980.6199 gals.).
 JV0795
 JV0795.The modeled gravity was interpolated from observed gravity values.
 JV0795
 JV0795;                    North         East    Units  Estimated Accuracy
 JV0795;SPC MD       -   183,030.      429,320.      MT  (+/- 180 meters Scaled)
 JV0795
 JV0795_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ568530(NAD 83)
 JV0795
 JV0795                          SUPERSEDED SURVEY CONTROL
 JV0795
 JV0795  NGVD 29 (11/26/84)   82.206  (m)          269.70   (f) ADJUSTED    2 0
 JV0795
 JV0795.Superseded values are not recommended for survey control.
 JV0795
 JV0795.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0795.See file dsdata.pdf to determine how the superseded data were derived.
 JV0795
 JV0795_MARKER: Q = CHISELED SQUARE
 JV0795_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0795_SP_SET: BRIDGE
 JV0795_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0795
 JV0795  HISTORY     - Date     Condition        Report By
 JV0795  HISTORY     - UNK      MONUMENTED       MD0050
 JV0795  HISTORY     - 1966     GOOD             MDSRC
 JV0795  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV0795
 JV0795                          STATION DESCRIPTION
 JV0795
 JV0795'DESCRIBED BY MD STATE ROADS COMM 1966
 JV0795'AT BALTIMORE.
 JV0795'AT BALTIMORE, ON THE WESTERN MARYLAND RAILWAY, AT A CONCRETE
 JV0795'BRIDGE OVER GWYNNS FALLS PARKWAY, AND ON THE TOP OF THE SOUTHEAST
 JV0795'CORNER.  A CHISELED SQUARE.
 JV0795
 JV0795                          STATION RECOVERY (2003)
 JV0795
 JV0795'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0795'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0796 ***********************************************************************
 JV0796  DESIGNATION -  5548 C OF B
 JV0796  PID         -  JV0796
 JV0796  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0796  COUNTRY     -  US
 JV0796  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0796
 JV0796                         *CURRENT SURVEY CONTROL
 JV0796  ______________________________________________________________________
 JV0796* NAD 83(1986) POSITION- 39 18 55.     (N) 076 39 34.     (W)   SCALED
 JV0796* NAVD 88 ORTHO HEIGHT -    75.936 (meters)      249.13  (feet) ADJUSTED
 JV0796  ______________________________________________________________________
 JV0796  GEOID HEIGHT    -        -32.533 (meters)                     GEOID18
 JV0796  DYNAMIC HEIGHT  -         75.896 (meters)      249.00  (feet) COMP
 JV0796  MODELED GRAVITY -    980,107.1   (mgal)                       NAVD 88
 JV0796
 JV0796  VERT ORDER      -  FIRST     CLASS II
 JV0796
 JV0796.The horizontal coordinates were scaled from a map and have
 JV0796.an estimated accuracy of +/- 6 seconds.
 JV0796
 JV0796.The orthometric height was determined by differential leveling and
 JV0796.adjusted by the NATIONAL GEODETIC SURVEY
 JV0796.in June 1991.
 JV0796
 JV0796.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0796.GEOID18 height accuracy estimate available here.
 JV0796
 JV0796.Click photographs - Photos may exist for this station.
 JV0796
 JV0796.The dynamic height is computed by dividing the NAVD 88
 JV0796.geopotential number by the normal gravity value computed on the
 JV0796.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0796.degrees latitude (g = 980.6199 gals.).
 JV0796
 JV0796.The modeled gravity was interpolated from observed gravity values.
 JV0796
 JV0796;                    North         East    Units  Estimated Accuracy
 JV0796;SPC MD       -   183,060.      429,370.      MT  (+/- 180 meters Scaled)
 JV0796
 JV0796_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ569530(NAD 83)
 JV0796
 JV0796                          SUPERSEDED SURVEY CONTROL
 JV0796
 JV0796  NGVD 29 (11/26/84)   76.158  (m)          249.86   (f) ADJUSTED    1 2
 JV0796
 JV0796.Superseded values are not recommended for survey control.
 JV0796
 JV0796.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0796.See file dsdata.pdf to determine how the superseded data were derived.
 JV0796
 JV0796_MARKER: Z = SEE DESCRIPTION
 JV0796_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0796_SP_SET: BRIDGE
 JV0796_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0796
 JV0796  HISTORY     - Date     Condition        Report By
 JV0796  HISTORY     - UNK      MONUMENTED       MD0050
 JV0796  HISTORY     - 1966     GOOD             MDSRC
 JV0796  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV0796
 JV0796                          STATION DESCRIPTION
 JV0796
 JV0796'DESCRIBED BY MD STATE ROADS COMM 1966
 JV0796'AT BALTIMORE.
 JV0796'AT BALTIMORE, ON THE WESTERN MARYLAND RAILWAY, AT A CONCRETE
 JV0796'BRIDGE OVER GWYNNS FALLS PARKWAY, AND IN THE TOP OF THE EAST
 JV0796'END OF THE SOUTH CONCRETE ABUTMENT.  A BRASS SCREW.
 JV0796
 JV0796                          STATION RECOVERY (2003)
 JV0796
 JV0796'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0796'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0797 ***********************************************************************
 JV0797  DESIGNATION -  5549 C OF B
 JV0797  PID         -  JV0797
 JV0797  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0797  COUNTRY     -  US
 JV0797  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0797
 JV0797                         *CURRENT SURVEY CONTROL
 JV0797  ______________________________________________________________________
 JV0797* NAD 83(1986) POSITION- 39 18 42.     (N) 076 39 36.     (W)   SCALED
 JV0797* NAVD 88 ORTHO HEIGHT -    75.067 (meters)      246.28  (feet) ADJUSTED
 JV0797  ______________________________________________________________________
 JV0797  GEOID HEIGHT    -        -32.538 (meters)                     GEOID18
 JV0797  DYNAMIC HEIGHT  -         75.028 (meters)      246.15  (feet) COMP
 JV0797  MODELED GRAVITY -    980,107.3   (mgal)                       NAVD 88
 JV0797
 JV0797  VERT ORDER      -  SECOND    CLASS 0
 JV0797
 JV0797.The horizontal coordinates were scaled from a map and have
 JV0797.an estimated accuracy of +/- 6 seconds.
 JV0797
 JV0797.The orthometric height was determined by differential leveling and
 JV0797.adjusted by the NATIONAL GEODETIC SURVEY
 JV0797.in June 1991.
 JV0797
 JV0797.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0797.GEOID18 height accuracy estimate available here.
 JV0797
 JV0797.Click photographs - Photos may exist for this station.
 JV0797
 JV0797.The dynamic height is computed by dividing the NAVD 88
 JV0797.geopotential number by the normal gravity value computed on the
 JV0797.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0797.degrees latitude (g = 980.6199 gals.).
 JV0797
 JV0797.The modeled gravity was interpolated from observed gravity values.
 JV0797
 JV0797;                    North         East    Units  Estimated Accuracy
 JV0797;SPC MD       -   182,660.      429,320.      MT  (+/- 180 meters Scaled)
 JV0797
 JV0797_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ568526(NAD 83)
 JV0797
 JV0797                          SUPERSEDED SURVEY CONTROL
 JV0797
 JV0797  NGVD 29 (11/26/84)   75.295  (m)          247.03   (f) ADJUSTED    2 0
 JV0797
 JV0797.Superseded values are not recommended for survey control.
 JV0797
 JV0797.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0797.See file dsdata.pdf to determine how the superseded data were derived.
 JV0797
 JV0797_MARKER: Z = SEE DESCRIPTION
 JV0797_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0797_SP_SET: FOUNDATION
 JV0797_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0797
 JV0797  HISTORY     - Date     Condition        Report By
 JV0797  HISTORY     - UNK      MONUMENTED       MD0050
 JV0797  HISTORY     - 1966     MARK NOT FOUND   CGS
 JV0797
 JV0797                          STATION DESCRIPTION
 JV0797
 JV0797'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 JV0797'AT BALTIMORE.
 JV0797'AT BALTIMORE, ON THE WESTERN MARYLAND RAILWAY, ABOUT 800 FEET
 JV0797'NORTH OF NORTH AVENUE, IN THE TOP OF THE CONCRETE FOUNDATION OF
 JV0797'A BLOCK SIGNAL AND 12 FEET WEST OF THE CENTERLINE OF THE TRACK.
 JV0797'A BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1202 ***********************************************************************
 JV1202  DESIGNATION -  5570 C OF B
 JV1202  PID         -  JV1202
 JV1202  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1202  COUNTRY     -  US
 JV1202  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1202
 JV1202                         *CURRENT SURVEY CONTROL
 JV1202  ______________________________________________________________________
 JV1202* NAD 83(1986) POSITION- 39 20 31.     (N) 076 38 52.     (W)   SCALED
 JV1202* NAVD 88 ORTHO HEIGHT -    53.184 (meters)      174.49  (feet) ADJUSTED
 JV1202  ______________________________________________________________________
 JV1202  GEOID HEIGHT    -        -32.528 (meters)                     GEOID18
 JV1202  DYNAMIC HEIGHT  -         53.156 (meters)      174.40  (feet) COMP
 JV1202  MODELED GRAVITY -    980,103.0   (mgal)                       NAVD 88
 JV1202
 JV1202  VERT ORDER      -  SECOND    CLASS 0
 JV1202
 JV1202.The horizontal coordinates were scaled from a map and have
 JV1202.an estimated accuracy of +/- 6 seconds.
 JV1202
 JV1202.The orthometric height was determined by differential leveling and
 JV1202.adjusted by the NATIONAL GEODETIC SURVEY
 JV1202.in June 1991.
 JV1202
 JV1202.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1202.GEOID18 height accuracy estimate available here.
 JV1202
 JV1202.Click photographs - Photos may exist for this station.
 JV1202
 JV1202.The dynamic height is computed by dividing the NAVD 88
 JV1202.geopotential number by the normal gravity value computed on the
 JV1202.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1202.degrees latitude (g = 980.6199 gals.).
 JV1202
 JV1202.The modeled gravity was interpolated from observed gravity values.
 JV1202
 JV1202;                    North         East    Units  Estimated Accuracy
 JV1202;SPC MD       -   186,030.      430,360.      MT  (+/- 180 meters Scaled)
 JV1202
 JV1202_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ580560(NAD 83)
 JV1202
 JV1202                          SUPERSEDED SURVEY CONTROL
 JV1202
 JV1202  NGVD 29 (11/26/84)   53.414  (m)          175.24   (f) ADJUSTED    2 0
 JV1202
 JV1202.Superseded values are not recommended for survey control.
 JV1202
 JV1202.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1202.See file dsdata.pdf to determine how the superseded data were derived.
 JV1202
 JV1202_MARKER: Q = CHISELED SQUARE
 JV1202_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1202_SP_SET: CULVERT
 JV1202_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1202
 JV1202  HISTORY     - Date     Condition        Report By
 JV1202  HISTORY     - UNK      MONUMENTED       MD0050
 JV1202  HISTORY     - 1935     GOOD             CGS
 JV1202
 JV1202                          STATION DESCRIPTION
 JV1202
 JV1202'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1202'AT BALTIMORE.
 JV1202'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, ABOUT 1,000 FEET
 JV1202'SOUTH OF COLD SPRING LANE, EAST OF THE TRACK, OPPOSITE A GAS
 JV1202'HOLDER, ON THE TOP OF A STONE CULVERT, 4 FEET FROM THE SOUTH
 JV1202'END, AND 0.4 FOOT FROM THE WALL.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1205 ***********************************************************************
 JV1205  DESIGNATION -  5571 C OF B
 JV1205  PID         -  JV1205
 JV1205  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1205  COUNTRY     -  US
 JV1205  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1205
 JV1205                         *CURRENT SURVEY CONTROL
 JV1205  ______________________________________________________________________
 JV1205* NAD 83(1986) POSITION- 39 20 03.     (N) 076 38 45.     (W)   SCALED
 JV1205* NAVD 88 ORTHO HEIGHT -    49.557 (meters)      162.59  (feet) ADJUSTED
 JV1205  ______________________________________________________________________
 JV1205  GEOID HEIGHT    -        -32.546 (meters)                     GEOID18
 JV1205  DYNAMIC HEIGHT  -         49.531 (meters)      162.50  (feet) COMP
 JV1205  MODELED GRAVITY -    980,103.8   (mgal)                       NAVD 88
 JV1205
 JV1205  VERT ORDER      -  SECOND    CLASS 0
 JV1205
 JV1205.The horizontal coordinates were scaled from a map and have
 JV1205.an estimated accuracy of +/- 6 seconds.
 JV1205
 JV1205.The orthometric height was determined by differential leveling and
 JV1205.adjusted by the NATIONAL GEODETIC SURVEY
 JV1205.in June 1991.
 JV1205
 JV1205.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1205.GEOID18 height accuracy estimate available here.
 JV1205
 JV1205.Click photographs - Photos may exist for this station.
 JV1205
 JV1205.The dynamic height is computed by dividing the NAVD 88
 JV1205.geopotential number by the normal gravity value computed on the
 JV1205.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1205.degrees latitude (g = 980.6199 gals.).
 JV1205
 JV1205.The modeled gravity was interpolated from observed gravity values.
 JV1205
 JV1205;                    North         East    Units  Estimated Accuracy
 JV1205;SPC MD       -   185,160.      430,540.      MT  (+/- 180 meters Scaled)
 JV1205
 JV1205_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ581551(NAD 83)
 JV1205
 JV1205                          SUPERSEDED SURVEY CONTROL
 JV1205
 JV1205  NGVD 29 (11/26/84)   49.788  (m)          163.35   (f) ADJUSTED    2 0
 JV1205
 JV1205.Superseded values are not recommended for survey control.
 JV1205
 JV1205.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1205.See file dsdata.pdf to determine how the superseded data were derived.
 JV1205
 JV1205_MARKER: Z = SEE DESCRIPTION
 JV1205_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1205_SP_SET: SIGNAL BASE
 JV1205_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1205
 JV1205  HISTORY     - Date     Condition        Report By
 JV1205  HISTORY     - UNK      MONUMENTED       MD0050
 JV1205  HISTORY     - 1935     GOOD             CGS
 JV1205
 JV1205                          STATION DESCRIPTION
 JV1205
 JV1205'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1205'AT BALTIMORE.
 JV1205'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, ABOUT 400 FEET NORTH
 JV1205'OF THE FORTY-FIRCT STREET BRIDGE, WEST OF THE TRACK, AND IN THE
 JV1205'TOP OF THE NORTHEAST CORNER OF A SIGNAL TOWER BASE.  A BRASS
 JV1205'SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ9001 ***********************************************************************
 DJ9001  DESIGNATION -  558
 DJ9001  PID         -  DJ9001
 DJ9001  STATE/COUNTY-  MD/ANNE ARUNDEL
 DJ9001  COUNTRY     -  US
 DJ9001  USGS QUAD   -  RELAY (2016)
 DJ9001
 DJ9001                         *CURRENT SURVEY CONTROL
 DJ9001  ______________________________________________________________________
 DJ9001* NAD 83(1986) POSITION- 39 10 44.11   (N) 076 39 43.32   (W)   HD_HELD1
 DJ9001* NAVD 88 ORTHO HEIGHT -    41.906 (meters)      137.49  (feet) ADJUSTED
 DJ9001  ______________________________________________________________________
 DJ9001  GEOID HEIGHT    -        -32.716 (meters)                     GEOID18
 DJ9001  DYNAMIC HEIGHT  -         41.884 (meters)      137.41  (feet) COMP
 DJ9001  MODELED GRAVITY -    980,093.5   (mgal)                       NAVD 88
 DJ9001
 DJ9001  VERT ORDER      -  FIRST     CLASS II
 DJ9001
 DJ9001.The horizontal coordinates were determined by differentially corrected
 DJ9001.hand held GPS observations or other comparable positioning techniques
 DJ9001.and have an estimated accuracy of +/- 3 meters.
 DJ9001
 DJ9001.The orthometric height was determined by differential leveling and
 DJ9001.adjusted by the NATIONAL GEODETIC SURVEY
 DJ9001.in June 2008.
 DJ9001
 DJ9001.No vertical observational check was made to the station.
 DJ9001
 DJ9001.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ9001.GEOID18 height accuracy estimate available here.
 DJ9001
 DJ9001.Click photographs - Photos may exist for this station.
 DJ9001
 DJ9001.The dynamic height is computed by dividing the NAVD 88
 DJ9001.geopotential number by the normal gravity value computed on the
 DJ9001.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ9001.degrees latitude (g = 980.6199 gals.).
 DJ9001
 DJ9001.The modeled gravity was interpolated from observed gravity values.
 DJ9001
 DJ9001;                    North         East    Units  Estimated Accuracy
 DJ9001;SPC MD       -   167,922.5     429,201.8     MT  (+/- 3 meters HH1 GPS) 
 DJ9001
 DJ9001_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5644037947(NAD 83)
 DJ9001
 DJ9001                          SUPERSEDED SURVEY CONTROL
 DJ9001
 DJ9001.No superseded survey control is available for this station.
 DJ9001
 DJ9001_MARKER: F = FLANGE-ENCASED ROD
 DJ9001_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DJ9001_STAMPING: 558 2003
 DJ9001_PROJECTION: FLUSH
 DJ9001_MAGNETIC: I = MARKER IS A STEEL ROD
 DJ9001_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DJ9001_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ9001+SATELLITE: SATELLITE OBSERVATIONS - November 01, 2007
 DJ9001
 DJ9001  HISTORY     - Date     Condition        Report By
 DJ9001  HISTORY     - 200305   MONUMENTED       WHBCXM
 DJ9001  HISTORY     - 20071101 GOOD             JARICE
 DJ9001
 DJ9001                          STATION DESCRIPTION
 DJ9001
 DJ9001'DESCRIBED BY J A RICE INC 2007 (MRA)
 DJ9001'THE MARK IS LOCATED ABOUT 4.0 MI (6.5 KM) SOUTH-SOUTHEAST OF RELAY,
 DJ9001'3.6 MI (5.8 KM) SOUTHEAST OF ELKRIDGE AND 3.5 MI (5.6 KM)
 DJ9001'EAST-SOUTHEAST OF HANOVER AT BALTIMORE WASHINGTON INTERNATIONAL
 DJ9001'AIRPORT.  CONTACT AIRPORT OPERATIONS AT 410-859-7018 FOR ACCESS TO THE
 DJ9001'MARK.
 DJ9001'
 DJ9001'IT IS IN THE CENTER OF A GRASS ISLAND BETWEEN TAXIWAY 'A' AND RUNWAY
 DJ9001'4/22, 69.3 FT (21.1 M) EAST-SOUTHEAST OF THE EAST-SOUTHEAST EDGE OF
 DJ9001'TAXIWAY 'A', 186.0 FT (56.7 M) NORTHWEST OF THE CENTERLINE OF RUNWAY
 DJ9001'4/22, 72.4 FT (22.1 M) NORTHWEST OF AN ELECTRICAL MANHOLE, 60.5 FT
 DJ9001'(18.4 M) NORTH OF AN ELECTRICAL MANHOLE AND 24.5 FT (7.5 M) NORTH OF A
 DJ9001'DRAINAGE INLET.
 DJ9001'
 DJ9001'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ9000 ***********************************************************************
 DJ9000  DESIGNATION -  559
 DJ9000  PID         -  DJ9000
 DJ9000  STATE/COUNTY-  MD/ANNE ARUNDEL
 DJ9000  COUNTRY     -  US
 DJ9000  USGS QUAD   -  RELAY (2016)
 DJ9000
 DJ9000                         *CURRENT SURVEY CONTROL
 DJ9000  ______________________________________________________________________
 DJ9000* NAD 83(1986) POSITION- 39 10 46.82   (N) 076 39 40.91   (W)   HD_HELD1
 DJ9000* NAVD 88 ORTHO HEIGHT -    41.782 (meters)      137.08  (feet) ADJUSTED
 DJ9000  ______________________________________________________________________
 DJ9000  GEOID HEIGHT    -        -32.717 (meters)                     GEOID18
 DJ9000  DYNAMIC HEIGHT  -         41.760 (meters)      137.01  (feet) COMP
 DJ9000  MODELED GRAVITY -    980,093.5   (mgal)                       NAVD 88
 DJ9000
 DJ9000  VERT ORDER      -  FIRST     CLASS II
 DJ9000
 DJ9000.The horizontal coordinates were determined by differentially corrected
 DJ9000.hand held GPS observations or other comparable positioning techniques
 DJ9000.and have an estimated accuracy of +/- 3 meters.
 DJ9000
 DJ9000.The orthometric height was determined by differential leveling and
 DJ9000.adjusted by the NATIONAL GEODETIC SURVEY
 DJ9000.in June 2008.
 DJ9000
 DJ9000.No vertical observational check was made to the station.
 DJ9000
 DJ9000.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ9000.GEOID18 height accuracy estimate available here.
 DJ9000
 DJ9000.Click photographs - Photos may exist for this station.
 DJ9000
 DJ9000.The dynamic height is computed by dividing the NAVD 88
 DJ9000.geopotential number by the normal gravity value computed on the
 DJ9000.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ9000.degrees latitude (g = 980.6199 gals.).
 DJ9000
 DJ9000.The modeled gravity was interpolated from observed gravity values.
 DJ9000
 DJ9000;                    North         East    Units  Estimated Accuracy
 DJ9000;SPC MD       -   168,006.3     429,259.4     MT  (+/- 3 meters HH1 GPS) 
 DJ9000
 DJ9000_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5650038029(NAD 83)
 DJ9000
 DJ9000                          SUPERSEDED SURVEY CONTROL
 DJ9000
 DJ9000.No superseded survey control is available for this station.
 DJ9000
 DJ9000_MARKER: F = FLANGE-ENCASED ROD
 DJ9000_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DJ9000_STAMPING: 559 2003
 DJ9000_PROJECTION: FLUSH
 DJ9000_MAGNETIC: I = MARKER IS A STEEL ROD
 DJ9000_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DJ9000_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ9000+SATELLITE: SATELLITE OBSERVATIONS - November 01, 2007
 DJ9000
 DJ9000  HISTORY     - Date     Condition        Report By
 DJ9000  HISTORY     - 200305   MONUMENTED       WHBCXM
 DJ9000  HISTORY     - 20071101 GOOD             JARICE
 DJ9000
 DJ9000                          STATION DESCRIPTION
 DJ9000
 DJ9000'DESCRIBED BY J A RICE INC 2007 (MRA)
 DJ9000'THE MARK IS LOCATED ABOUT 4.0 MI (6.5 KM) SOUTHEAST OF RELAY, 3.6 MI
 DJ9000'(5.8 KM) SOUTHEAST OF ELKRIDGE AND 3.5 MI (5.6 KM) EAST-SOUTHEAST OF
 DJ9000'HANOVER AT THE BALTIMORE WASHINGTON INTERNATIONAL AIRPORT.  CONTACT
 DJ9000'AIRPORT OPERATIONS AT 410-859-7018 FOR ACCESS TO THE MARK.
 DJ9000'
 DJ9000'IT IS IN THE NORTHEAST END OF A GRASS ISLAND BETWEEN RUNWAY 4/22 AND
 DJ9000'TAXIWAY 'A', 178.6 FT (54.4 M) NORTHWEST OF THE CENTERLINE OF RUNWAY
 DJ9000'4/22, 67.5 FT (20.6 M) NORTH OF AN ELECTRICAL MANHOLE, 61.4 FT (18.7
 DJ9000'M) SOUTHWEST OF A RECTANGULAR ELECTRICAL HAND BOX, 47.5 FT (14.5 M)
 DJ9000'NORTHEAST OF A DRAINAGE INLET AND 38.2 FT (11.6 M) NORTH-NORTHWEST OF
 DJ9000'AN UNMARKED MANHOLE.
 DJ9000'
 DJ9000'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0381 ***********************************************************************
 JV0381  DESIGNATION -  56
 JV0381  PID         -  JV0381
 JV0381  STATE/COUNTY-  MD/HARFORD
 JV0381  COUNTRY     -  US
 JV0381  USGS QUAD   -  PERRYMAN (2016)
 JV0381
 JV0381                         *CURRENT SURVEY CONTROL
 JV0381  ______________________________________________________________________
 JV0381* NAD 83(1986) POSITION- 39 29 26.     (N) 076 12 13.     (W)   SCALED
 JV0381* NAVD 88 ORTHO HEIGHT -    16.812 (meters)       55.16  (feet) ADJUSTED
 JV0381  ______________________________________________________________________
 JV0381  GEOID HEIGHT    -        -33.108 (meters)                     GEOID18
 JV0381  DYNAMIC HEIGHT  -         16.803 (meters)       55.13  (feet) COMP
 JV0381  MODELED GRAVITY -    980,118.9   (mgal)                       NAVD 88
 JV0381
 JV0381  VERT ORDER      -  FIRST     CLASS I
 JV0381
 JV0381.The horizontal coordinates were scaled from a map and have
 JV0381.an estimated accuracy of +/- 6 seconds.
 JV0381
 JV0381.The orthometric height was determined by differential leveling and
 JV0381.adjusted by the NATIONAL GEODETIC SURVEY
 JV0381.in June 1991.
 JV0381
 JV0381.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0381.GEOID18 height accuracy estimate available here.
 JV0381
 JV0381.Click photographs - Photos may exist for this station.
 JV0381
 JV0381.The dynamic height is computed by dividing the NAVD 88
 JV0381.geopotential number by the normal gravity value computed on the
 JV0381.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0381.degrees latitude (g = 980.6199 gals.).
 JV0381
 JV0381.The modeled gravity was interpolated from observed gravity values.
 JV0381
 JV0381;                    North         East    Units  Estimated Accuracy
 JV0381;SPC MD       -   202,770.      468,510.      MT  (+/- 180 meters Scaled)
 JV0381
 JV0381_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ964719(NAD 83)
 JV0381
 JV0381                          SUPERSEDED SURVEY CONTROL
 JV0381
 JV0381  NGVD 29 (11/26/84)   17.056  (m)           55.96   (f) ADJUSTED    1 1
 JV0381
 JV0381.Superseded values are not recommended for survey control.
 JV0381
 JV0381.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0381.See file dsdata.pdf to determine how the superseded data were derived.
 JV0381
 JV0381_MARKER: DD = SURVEY DISK
 JV0381_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0381_SP_SET: COLUMN OF PIER
 JV0381_STAMPING: 56 1939
 JV0381_MARK LOGO: USGS
 JV0381_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0381
 JV0381  HISTORY     - Date     Condition        Report By
 JV0381  HISTORY     - 1939     MONUMENTED       USGS
 JV0381  HISTORY     - 1971     GOOD             NGS
 JV0381  HISTORY     - 1991     GOOD             USPSQD
 JV0381  HISTORY     - 19980716 MARK NOT FOUND   MDSHA
 JV0381
 JV0381                          STATION DESCRIPTION
 JV0381
 JV0381'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0381'3 MI SW FROM ABERDEEN.
 JV0381'ABOUT 2.6 MILES SOUTHWEST ALONG U.S. HIGHWAY 40 FROM THE HIGH
 JV0381'SCHOOL AT ABERDEEN, THENCE 0.35 MILE NORTHWEST ALONG STATE
 JV0381'HIGHWAY 7, SET VERTICALLY IN THE NORTHWEST FACE OF THE CENTER
 JV0381'ONE OF THREE CONCRETE COLUMNS WHICH SUPPORT THE SOUTHEAST CONCRETE
 JV0381'PIER OF THE HIGHWAY OVERPASS FOR THE BALTIMORE AND OHIO
 JV0381'RAILROAD, 37 1/2 FEET SOUTHEAST OF THE SOUTHEAST RAIL OF THE
 JV0381'MAIN TRACK, AND ABOUT 3 FEET ABOVE THE LEVEL OF THE GROUND.
 JV0381'NOTE-- THIS MARK IS ALSO 2.5 MILES SOUTHWEST ALONG THE
 JV0381'BALTIMORE AND OHIO RAILROAD FROM THE STATION AT ABERDEEN.
 JV0381
 JV0381                          STATION RECOVERY (1991)
 JV0381
 JV0381'RECOVERY NOTE BY US POWER SQUADRON 1991 (ELD)
 JV0381'RECOVERED IN GOOD CONDITION.
 JV0381
 JV0381                          STATION RECOVERY (1998)
 JV0381
 JV0381'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV0381'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  A NEW STATE HIGHWAY 7
 JV0381'BRIDGE HAS BEEN CONSTRUCTED AT THE DESCRIBED LOCATION AND THE OLD
 JV0381'BRIDGE HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0023 ***********************************************************************
 JV0023  DESIGNATION -  56 A PRR
 JV0023  PID         -  JV0023
 JV0023  STATE/COUNTY-  MD/CECIL
 JV0023  COUNTRY     -  US
 JV0023  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0023
 JV0023                         *CURRENT SURVEY CONTROL
 JV0023  ______________________________________________________________________
 JV0023* NAD 83(1986) POSITION- 39 33 22.     (N) 076 04 43.     (W)   SCALED
 JV0023* NAVD 88 ORTHO HEIGHT -    15.992 (meters)       52.47  (feet) ADJUSTED
 JV0023  ______________________________________________________________________
 JV0023  GEOID HEIGHT    -        -33.154 (meters)                     GEOID18
 JV0023  DYNAMIC HEIGHT  -         15.984 (meters)       52.44  (feet) COMP
 JV0023  MODELED GRAVITY -    980,126.2   (mgal)                       NAVD 88
 JV0023
 JV0023  VERT ORDER      -  FIRST     CLASS II
 JV0023
 JV0023.The horizontal coordinates were scaled from a map and have
 JV0023.an estimated accuracy of +/- 6 seconds.
 JV0023
 JV0023.The orthometric height was determined by differential leveling and
 JV0023.adjusted by the NATIONAL GEODETIC SURVEY
 JV0023.in June 1991.
 JV0023
 JV0023.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0023.GEOID18 height accuracy estimate available here.
 JV0023
 JV0023.Click photographs - Photos may exist for this station.
 JV0023
 JV0023.The dynamic height is computed by dividing the NAVD 88
 JV0023.geopotential number by the normal gravity value computed on the
 JV0023.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0023.degrees latitude (g = 980.6199 gals.).
 JV0023
 JV0023.The modeled gravity was interpolated from observed gravity values.
 JV0023
 JV0023;                    North         East    Units  Estimated Accuracy
 JV0023;SPC MD       -   210,140.      479,190.      MT  (+/- 180 meters Scaled)
 JV0023
 JV0023_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ073790(NAD 83)
 JV0023
 JV0023                          SUPERSEDED SURVEY CONTROL
 JV0023
 JV0023  NGVD 29 (11/26/84)   16.250  (m)           53.31   (f) ADJUSTED    1 2
 JV0023
 JV0023.Superseded values are not recommended for survey control.
 JV0023
 JV0023.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0023.See file dsdata.pdf to determine how the superseded data were derived.
 JV0023
 JV0023_MARKER: B = BOLT
 JV0023_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0023_SP_SET: BRIDGE
 JV0023_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0023
 JV0023  HISTORY     - Date     Condition        Report By
 JV0023  HISTORY     - UNK      MONUMENTED       PRR
 JV0023  HISTORY     - 1955     GOOD             CGS
 JV0023  HISTORY     - 1979     GOOD             NGS
 JV0023
 JV0023                          STATION DESCRIPTION
 JV0023
 JV0023'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0023'AT PERRYVILLE.
 JV0023'AT PERRYVILLE, ABOUT 0.25 MILE SOUTHWEST ALONG THE PENNSYLVANIA
 JV0023'RAILROAD FROM THE STATION, A 1-INCH COPPER BOLT IN THE TOP OF THE
 JV0023'SOUTHEAST END OF THE STONE MASONRY BACK WALL OF THE NORTHEAST
 JV0023'ABUTMENT OF RAILROAD BRIDGE OVER SUSQUEHANNA RIVER, 8.9 FEET
 JV0023'SOUTHEAST OF SOUTHEAST RAIL OF SOUTHEAST TRACK, AND ABOUT 1 1/3
 JV0023'FOOT BELOW LEVEL OF TRACK.  NOTE-- 56 A IS CHISELED IN THE TOP
 JV0023'SURFACE OF STONE JUST NORTHEAST OF COPPER BOLT.
 JV0023
 JV0023                          STATION RECOVERY (1979)
 JV0023
 JV0023'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0023'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0797 ***********************************************************************
 HU0797  DESIGNATION -  56 USGS
 HU0797  PID         -  HU0797
 HU0797  STATE/COUNTY-  MD/CAROLINE
 HU0797  COUNTRY     -  US
 HU0797  USGS QUAD   -  HICKMAN (2016)
 HU0797
 HU0797                         *CURRENT SURVEY CONTROL
 HU0797  ______________________________________________________________________
 HU0797* NAD 83(1986) POSITION- 38 50 13.     (N) 075 43 24.     (W)   SCALED
 HU0797* NAVD 88 ORTHO HEIGHT -    16.727 (meters)       54.88  (feet) ADJUSTED
 HU0797  ______________________________________________________________________
 HU0797  GEOID HEIGHT    -        -35.136 (meters)                     GEOID18
 HU0797  DYNAMIC HEIGHT  -         16.717 (meters)       54.85  (feet) COMP
 HU0797  MODELED GRAVITY -    980,033.0   (mgal)                       NAVD 88
 HU0797
 HU0797  VERT ORDER      -  SECOND    CLASS 0
 HU0797
 HU0797.The horizontal coordinates were scaled from a map and have
 HU0797.an estimated accuracy of +/- 6 seconds.
 HU0797
 HU0797.The orthometric height was determined by differential leveling and
 HU0797.adjusted by the NATIONAL GEODETIC SURVEY
 HU0797.in June 1991.
 HU0797
 HU0797.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0797.GEOID18 height accuracy estimate available here.
 HU0797
 HU0797.Click photographs - Photos may exist for this station.
 HU0797
 HU0797.The dynamic height is computed by dividing the NAVD 88
 HU0797.geopotential number by the normal gravity value computed on the
 HU0797.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0797.degrees latitude (g = 980.6199 gals.).
 HU0797
 HU0797.The modeled gravity was interpolated from observed gravity values.
 HU0797
 HU0797;                    North         East    Units  Estimated Accuracy
 HU0797;SPC MD       -   130,680.      510,840.      MT  (+/- 180 meters Scaled)
 HU0797
 HU0797_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH372989(NAD 83)
 HU0797
 HU0797                          SUPERSEDED SURVEY CONTROL
 HU0797
 HU0797  NGVD 29 (11/26/84)   16.970  (m)           55.68   (f) ADJUSTED    2 0
 HU0797
 HU0797.Superseded values are not recommended for survey control.
 HU0797
 HU0797.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0797.See file dsdata.pdf to determine how the superseded data were derived.
 HU0797
 HU0797_MARKER: DD = SURVEY DISK
 HU0797_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0797_STAMPING: 56
 HU0797_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0797+STABILITY: SURFACE MOTION
 HU0797
 HU0797  HISTORY     - Date     Condition        Report By
 HU0797  HISTORY     - UNK      MONUMENTED       USGS
 HU0797  HISTORY     - 1956     GOOD             CGS
 HU0797
 HU0797                          STATION DESCRIPTION
 HU0797
 HU0797'DESCRIBED BY COAST AND GEODETIC SURVEY 1956
 HU0797'IN HICKMAN.
 HU0797'AT HICKMAN, KENT COUNTY, ABOUT 100 FEET NORTHWEST OF THE 1935 SITE
 HU0797'OF THE MARYLAND AND DELAWARE SEACOAST RAILROAD STATION, AT THE
 HU0797'MARYLAND-DELAWARE STATE LINE, 23 FEET NORTH OF THE 1935 LOCATION
 HU0797'OF THE NORTH RAIL, 18 FEET WEST OF THE CENTER LINE OF MAIN STREET,
 HU0797'AND ABOUT LEVEL WITH THE TRACK.  A UNITED STATES GEOLOGICAL SURVEY
 HU0797'STANDARD DISK, STAMPED 56 AND SET IN THE TOP OF A CONCRETE POST
 HU0797'PROJECTING ABOUT 3 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ8999 ***********************************************************************
 DJ8999  DESIGNATION -  560
 DJ8999  PID         -  DJ8999
 DJ8999  STATE/COUNTY-  MD/ANNE ARUNDEL
 DJ8999  COUNTRY     -  US
 DJ8999  USGS QUAD   -  RELAY (2016)
 DJ8999
 DJ8999                         *CURRENT SURVEY CONTROL
 DJ8999  ______________________________________________________________________
 DJ8999* NAD 83(1986) POSITION- 39 10 51.58   (N) 076 39 37.79   (W)   HD_HELD1
 DJ8999* NAVD 88 ORTHO HEIGHT -    41.767 (meters)      137.03  (feet) ADJUSTED
 DJ8999  ______________________________________________________________________
 DJ8999  GEOID HEIGHT    -        -32.718 (meters)                     GEOID18
 DJ8999  DYNAMIC HEIGHT  -         41.745 (meters)      136.96  (feet) COMP
 DJ8999  MODELED GRAVITY -    980,093.7   (mgal)                       NAVD 88
 DJ8999
 DJ8999  VERT ORDER      -  FIRST     CLASS II
 DJ8999
 DJ8999.The horizontal coordinates were determined by differentially corrected
 DJ8999.hand held GPS observations or other comparable positioning techniques
 DJ8999.and have an estimated accuracy of +/- 3 meters.
 DJ8999
 DJ8999.The orthometric height was determined by differential leveling and
 DJ8999.adjusted by the NATIONAL GEODETIC SURVEY
 DJ8999.in June 2008.
 DJ8999
 DJ8999.No vertical observational check was made to the station.
 DJ8999
 DJ8999.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ8999.GEOID18 height accuracy estimate available here.
 DJ8999
 DJ8999.Click photographs - Photos may exist for this station.
 DJ8999
 DJ8999.The dynamic height is computed by dividing the NAVD 88
 DJ8999.geopotential number by the normal gravity value computed on the
 DJ8999.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ8999.degrees latitude (g = 980.6199 gals.).
 DJ8999
 DJ8999.The modeled gravity was interpolated from observed gravity values.
 DJ8999
 DJ8999;                    North         East    Units  Estimated Accuracy
 DJ8999;SPC MD       -   168,153.4     429,333.7     MT  (+/- 3 meters HH1 GPS) 
 DJ8999
 DJ8999_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5657738175(NAD 83)
 DJ8999
 DJ8999                          SUPERSEDED SURVEY CONTROL
 DJ8999
 DJ8999.No superseded survey control is available for this station.
 DJ8999
 DJ8999_MARKER: F = FLANGE-ENCASED ROD
 DJ8999_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DJ8999_STAMPING: 560 2003
 DJ8999_PROJECTION: FLUSH
 DJ8999_MAGNETIC: I = MARKER IS A STEEL ROD
 DJ8999_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DJ8999_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ8999+SATELLITE: SATELLITE OBSERVATIONS - November 27, 2007
 DJ8999
 DJ8999  HISTORY     - Date     Condition        Report By
 DJ8999  HISTORY     - 200305   MONUMENTED       WHBCXM
 DJ8999  HISTORY     - 20071127 GOOD             JARICE
 DJ8999
 DJ8999                          STATION DESCRIPTION
 DJ8999
 DJ8999'DESCRIBED BY J A RICE INC 2007 (MRA)
 DJ8999'THE MARK IS LOCATED ABOUT 4.0 MI (6.4 KM) SOUTHEAST OF RELAY, 3.6 MI
 DJ8999'(5.8 KM) SOUTHEAST OF ELKRIDGE AND 3.5 MI (5.6 KM) EAST-SOUTHEAST OF
 DJ8999'HANOVER AT BALTIMORE WASHINGTON INTERNATIONAL AIRPORT.  CONTACT
 DJ8999'AIRPORT OPERATIONS AT 410-859-7018 FOR ACCESS TO THE MARK.
 DJ8999'
 DJ8999'IT IS IN THE SOUTHEAST END OF A GRASS ISLAND BETWEEN TWO TAXIWAYS,
 DJ8999'103.1 FT (31.4 M) NORTH-NORTHWEST OF A UTILITY MANHOLE, 92.5 FT (28.2
 DJ8999'M) SOUTH-SOUTHEAST OF A SIGN, 67.3 FT (20.5 M) SOUTH OF A DRAINAGE
 DJ8999'INLET, 59.0 FT (18.0 M) NORTHEAST OF THE NORTHEAST EDGE OF TAXIWAY 'A'
 DJ8999'AND 37.2 FT (11.3 M) NORTH OF A SIGN.
 DJ8999'
 DJ8999'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ8998 ***********************************************************************
 DJ8998  DESIGNATION -  561
 DJ8998  PID         -  DJ8998
 DJ8998  STATE/COUNTY-  MD/ANNE ARUNDEL
 DJ8998  COUNTRY     -  US
 DJ8998  USGS QUAD   -  RELAY (2016)
 DJ8998
 DJ8998                         *CURRENT SURVEY CONTROL
 DJ8998  ______________________________________________________________________
 DJ8998* NAD 83(1986) POSITION- 39 10 58.28   (N) 076 39 44.09   (W)   HD_HELD1
 DJ8998* NAVD 88 ORTHO HEIGHT -    42.850 (meters)      140.58  (feet) ADJUSTED
 DJ8998  ______________________________________________________________________
 DJ8998  GEOID HEIGHT    -        -32.711 (meters)                     GEOID18
 DJ8998  DYNAMIC HEIGHT  -         42.827 (meters)      140.51  (feet) COMP
 DJ8998  MODELED GRAVITY -    980,094.1   (mgal)                       NAVD 88
 DJ8998
 DJ8998  VERT ORDER      -  FIRST     CLASS II
 DJ8998
 DJ8998.The horizontal coordinates were determined by differentially corrected
 DJ8998.hand held GPS observations or other comparable positioning techniques
 DJ8998.and have an estimated accuracy of +/- 3 meters.
 DJ8998
 DJ8998.The orthometric height was determined by differential leveling and
 DJ8998.adjusted by the NATIONAL GEODETIC SURVEY
 DJ8998.in June 2008.
 DJ8998
 DJ8998.No vertical observational check was made to the station.
 DJ8998
 DJ8998.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ8998.GEOID18 height accuracy estimate available here.
 DJ8998
 DJ8998.Click photographs - Photos may exist for this station.
 DJ8998
 DJ8998.The dynamic height is computed by dividing the NAVD 88
 DJ8998.geopotential number by the normal gravity value computed on the
 DJ8998.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ8998.degrees latitude (g = 980.6199 gals.).
 DJ8998
 DJ8998.The modeled gravity was interpolated from observed gravity values.
 DJ8998
 DJ8998;                    North         East    Units  Estimated Accuracy
 DJ8998;SPC MD       -   168,359.4     429,181.7     MT  (+/- 3 meters HH1 GPS) 
 DJ8998
 DJ8998_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5643038384(NAD 83)
 DJ8998
 DJ8998                          SUPERSEDED SURVEY CONTROL
 DJ8998
 DJ8998.No superseded survey control is available for this station.
 DJ8998
 DJ8998_MARKER: F = FLANGE-ENCASED ROD
 DJ8998_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DJ8998_STAMPING: 561 2003
 DJ8998_PROJECTION: FLUSH
 DJ8998_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ8998_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DJ8998_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ8998+SATELLITE: SATELLITE OBSERVATIONS - November 07, 2007
 DJ8998
 DJ8998  HISTORY     - Date     Condition        Report By
 DJ8998  HISTORY     - 200305   MONUMENTED       WHBCXM
 DJ8998  HISTORY     - 20071107 GOOD             JARICE
 DJ8998
 DJ8998                          STATION DESCRIPTION
 DJ8998
 DJ8998'DESCRIBED BY J A RICE INC 2007 (MRA)
 DJ8998'THE MARK IS LOCATED ABOUT 3.8 MI (6.1 KM) SOUTHEAST OF RELAY, 3.4 MI
 DJ8998'(5.5 KM) SOUTHEAST OF ELKRIDGE AND 3.4 MI (5.4 KM) EAST-SOUTHEAST OF
 DJ8998'HANOVER AT BALTIMORE WASHINGTON INTERNATIONAL AIRPORT.  CONTACT
 DJ8998'AIRPORT OPERATIONS AT 410-859-7018 FOR ACCESS TO THE MARK.
 DJ8998'
 DJ8998'IT IS IN A GRASS ISLAND BETWEEN TWO TAXIWAYS AT THE WEST EDGE OF A
 DJ8998'DITCH, 217.0 FT (66.1 M) SOUTH-SOUTHEAST OF A SIGN, 139.5 FT (42.5 M)
 DJ8998'WEST-SOUTHWEST OF THE WEST-SOUTHWEST EDGE OF TAXIWAY 'S', 64.0 FT
 DJ8998'(19.5 M) SOUTH-SOUTHEAST OF THE CENTERLINE OF RIPRAP, 59.6 FT (18.2 M)
 DJ8998'EAST-NORTHEAST OF THE EAST-NORTHEAST EDGE OF TAXIWAY 'A' AND 53.4 FT
 DJ8998'(16.3 M) WEST-SOUTHWEST OF THE WEST-SOUTHWEST CENTER OF A DRAINAGE
 DJ8998'DITCH.
 DJ8998'
 DJ8998'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0791 ***********************************************************************
 JV0791  DESIGNATION -  5619 C OF B
 JV0791  PID         -  JV0791
 JV0791  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0791  COUNTRY     -  US
 JV0791  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0791
 JV0791                         *CURRENT SURVEY CONTROL
 JV0791  ______________________________________________________________________
 JV0791* NAD 83(1986) POSITION- 39 20 29.     (N) 076 41 00.     (W)   SCALED
 JV0791* NAVD 88 ORTHO HEIGHT -   133.329 (meters)      437.43  (feet) ADJUSTED
 JV0791  ______________________________________________________________________
 JV0791  GEOID HEIGHT    -        -32.410 (meters)                     GEOID18
 JV0791  DYNAMIC HEIGHT  -        133.259 (meters)      437.20  (feet) COMP
 JV0791  MODELED GRAVITY -    980,106.0   (mgal)                       NAVD 88
 JV0791
 JV0791  VERT ORDER      -  SECOND    CLASS 0
 JV0791
 JV0791.The horizontal coordinates were scaled from a map and have
 JV0791.an estimated accuracy of +/- 6 seconds.
 JV0791
 JV0791.The orthometric height was determined by differential leveling and
 JV0791.adjusted by the NATIONAL GEODETIC SURVEY
 JV0791.in June 1991.
 JV0791
 JV0791.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0791.GEOID18 height accuracy estimate available here.
 JV0791
 JV0791.Click photographs - Photos may exist for this station.
 JV0791
 JV0791.The dynamic height is computed by dividing the NAVD 88
 JV0791.geopotential number by the normal gravity value computed on the
 JV0791.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0791.degrees latitude (g = 980.6199 gals.).
 JV0791
 JV0791.The modeled gravity was interpolated from observed gravity values.
 JV0791
 JV0791;                    North         East    Units  Estimated Accuracy
 JV0791;SPC MD       -   185,950.      427,300.      MT  (+/- 180 meters Scaled)
 JV0791
 JV0791_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ549560(NAD 83)
 JV0791
 JV0791                          SUPERSEDED SURVEY CONTROL
 JV0791
 JV0791  NGVD 29 (11/26/84)  133.554  (m)          438.17   (f) ADJUSTED    2 0
 JV0791
 JV0791.Superseded values are not recommended for survey control.
 JV0791
 JV0791.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0791.See file dsdata.pdf to determine how the superseded data were derived.
 JV0791
 JV0791_MARKER: Q = CHISELED SQUARE
 JV0791_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0791_SP_SET: RETAINING WALL
 JV0791_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0791
 JV0791  HISTORY     - Date     Condition        Report By
 JV0791  HISTORY     - UNK      MONUMENTED       MD0050
 JV0791  HISTORY     - 1935     GOOD             CGS
 JV0791
 JV0791                          STATION DESCRIPTION
 JV0791
 JV0791'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV0791'AT BALTIMORE.
 JV0791'(CITY OF BALTIMORE) IN SOUTHEAST CORNER OF CONCRETE RETAINING
 JV0791'WALL.  ON THE NORTHWEST CORNER OF GARRISON BOULEVARD AND THE
 JV0791'WESTERN MARYLAND RAILROAD.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ8997 ***********************************************************************
 DJ8997  DESIGNATION -  562
 DJ8997  PID         -  DJ8997
 DJ8997  STATE/COUNTY-  MD/ANNE ARUNDEL
 DJ8997  COUNTRY     -  US
 DJ8997  USGS QUAD   -  RELAY (2016)
 DJ8997
 DJ8997                         *CURRENT SURVEY CONTROL
 DJ8997  ______________________________________________________________________
 DJ8997* NAD 83(1986) POSITION- 39 11 02.86   (N) 076 40 01.21   (W)   HD_HELD1
 DJ8997* NAVD 88 ORTHO HEIGHT -    46.915 (meters)      153.92  (feet) ADJUSTED
 DJ8997  ______________________________________________________________________
 DJ8997  GEOID HEIGHT    -        -32.697 (meters)                     GEOID18
 DJ8997  DYNAMIC HEIGHT  -         46.890 (meters)      153.84  (feet) COMP
 DJ8997  MODELED GRAVITY -    980,094.6   (mgal)                       NAVD 88
 DJ8997
 DJ8997  VERT ORDER      -  FIRST     CLASS II
 DJ8997
 DJ8997.The horizontal coordinates were determined by differentially corrected
 DJ8997.hand held GPS observations or other comparable positioning techniques
 DJ8997.and have an estimated accuracy of +/- 3 meters.
 DJ8997
 DJ8997.The orthometric height was determined by differential leveling and
 DJ8997.adjusted by the NATIONAL GEODETIC SURVEY
 DJ8997.in June 2008.
 DJ8997
 DJ8997.No vertical observational check was made to the station.
 DJ8997
 DJ8997.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ8997.GEOID18 height accuracy estimate available here.
 DJ8997
 DJ8997.Click photographs - Photos may exist for this station.
 DJ8997
 DJ8997.The dynamic height is computed by dividing the NAVD 88
 DJ8997.geopotential number by the normal gravity value computed on the
 DJ8997.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ8997.degrees latitude (g = 980.6199 gals.).
 DJ8997
 DJ8997.The modeled gravity was interpolated from observed gravity values.
 DJ8997
 DJ8997;                    North         East    Units  Estimated Accuracy
 DJ8997;SPC MD       -   168,499.2     428,770.3     MT  (+/- 3 meters HH1 GPS) 
 DJ8997
 DJ8997_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5602238533(NAD 83)
 DJ8997
 DJ8997                          SUPERSEDED SURVEY CONTROL
 DJ8997
 DJ8997.No superseded survey control is available for this station.
 DJ8997
 DJ8997_MARKER: F = FLANGE-ENCASED ROD
 DJ8997_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DJ8997_STAMPING: 562 2003
 DJ8997_PROJECTION: FLUSH
 DJ8997_MAGNETIC: I = MARKER IS A STEEL ROD
 DJ8997_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DJ8997_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ8997+SATELLITE: SATELLITE OBSERVATIONS - November 07, 2007
 DJ8997
 DJ8997  HISTORY     - Date     Condition        Report By
 DJ8997  HISTORY     - 200305   MONUMENTED       WHBCXM
 DJ8997  HISTORY     - 20071107 GOOD             JARICE
 DJ8997
 DJ8997                          STATION DESCRIPTION
 DJ8997
 DJ8997'DESCRIBED BY J A RICE INC 2007 (MRA)
 DJ8997'THE MARK IS LOCATED ABOUT 3.6 MI (5.8 KM) SOUTH-SOUTHEAST OF RELAY,
 DJ8997'3.2 MI (5.1 KM) SOUTHEAST OF ELKRIDGE AND 3.1 MI (5.0 KM) EAST OF
 DJ8997'HANOVER AT BALTIMORE WASHINGTON INTERNATIONAL AIRPORT.  CONTACT
 DJ8997'AIRPORT OPERATIONS AT 410-859-7018 FOR ACCESS TO THE MARK.
 DJ8997'
 DJ8997'IT IS 112.5 FT (34.3 M) NORTH OF THE NORTH CORNER OF THE GUARD SHACK
 DJ8997'(CHECK POINT JULIET), 107.0 FT (32.6 M) NORTHWEST OF A CHAIN LINK
 DJ8997'FENCE, 93.8 FT (28.6 M) NORTH-NORTHWEST OF AN ELECTRICAL TRANSFORMER
 DJ8997'NUMBERED 86-035 30 021 A, 37.5 FT (11.4 M) NORTHEAST OF THE CENTERLINE
 DJ8997'OF A SERVICE ROAD, 36.4 FT (11.1 M) WEST OF THE NORTHEAST END OF A
 DJ8997'CONCRETE DRAINAGE PIPE AND ABOUT LEVEL WITH THE SERVICE ROAD.
 DJ8997'
 DJ8997'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2701 ***********************************************************************
 JV2701  DESIGNATION -  566
 JV2701  PID         -  JV2701
 JV2701  STATE/COUNTY-  MD/MONTGOMERY
 JV2701  COUNTRY     -  US
 JV2701  USGS QUAD   -  ROCKVILLE (2016)
 JV2701
 JV2701                         *CURRENT SURVEY CONTROL
 JV2701  ______________________________________________________________________
 JV2701* NAD 83(1986) POSITION- 39 04 57.     (N) 077 08 40.     (W)   SCALED
 JV2701* NAVD 88 ORTHO HEIGHT -   131.127 (meters)      430.21  (feet) ADJUSTED
 JV2701  ______________________________________________________________________
 JV2701  GEOID HEIGHT    -        -31.733 (meters)                     GEOID18
 JV2701  DYNAMIC HEIGHT  -        131.058 (meters)      429.98  (feet) COMP
 JV2701  MODELED GRAVITY -    980,099.6   (mgal)                       NAVD 88
 JV2701
 JV2701  VERT ORDER      -  FIRST     CLASS II
 JV2701
 JV2701.The horizontal coordinates were scaled from a map and have
 JV2701.an estimated accuracy of +/- 6 seconds.
 JV2701
 JV2701.The orthometric height was determined by differential leveling and
 JV2701.adjusted by the NATIONAL GEODETIC SURVEY
 JV2701.in June 1991.
 JV2701
 JV2701.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2701.GEOID18 height accuracy estimate available here.
 JV2701
 JV2701.Click photographs - Photos may exist for this station.
 JV2701
 JV2701.The dynamic height is computed by dividing the NAVD 88
 JV2701.geopotential number by the normal gravity value computed on the
 JV2701.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2701.degrees latitude (g = 980.6199 gals.).
 JV2701
 JV2701.The modeled gravity was interpolated from observed gravity values.
 JV2701
 JV2701;                    North         East    Units  Estimated Accuracy
 JV2701;SPC MD       -   157,180.      387,500.      MT  (+/- 180 meters Scaled)
 JV2701
 JV2701_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ145281(NAD 83)
 JV2701
 JV2701                          SUPERSEDED SURVEY CONTROL
 JV2701
 JV2701  NGVD 29 (11/26/84)  131.344  (m)          430.92   (f) ADJUSTED    1 2
 JV2701
 JV2701.Superseded values are not recommended for survey control.
 JV2701
 JV2701.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2701.See file dsdata.pdf to determine how the superseded data were derived.
 JV2701
 JV2701_MARKER: Z = SEE DESCRIPTION
 JV2701_SETTING: 0 = UNSPECIFIED SETTING
 JV2701_STAMPING: 566
 JV2701_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2701
 JV2701  HISTORY     - Date     Condition        Report By
 JV2701  HISTORY     - UNK      MONUMENTED       WSSC
 JV2701  HISTORY     - 1966     GOOD             CGS
 JV2701  HISTORY     - 20020125 MARK NOT FOUND   MDSHA
 JV2701
 JV2701                          STATION DESCRIPTION
 JV2701
 JV2701'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 JV2701'AT ROCKVILLE.
 JV2701'AT ROCKVILLE, JUST SOUTH OF THE BALTIMORE AND OHIO RAILROAD
 JV2701'STATION, AT THE FORMER LOCATION OF THE OLD BALTIMORE ROAD
 JV2701'CROSSING, EAST OF TRACKS AND IN ABOUT THE CENTER OF THE TOP OF A
 JV2701'SMALL HEADWALL (THE HEADWALL HAS A LARGE CRACK ABOUT 1/2 FOOT
 JV2701'FROM THE MARK). BRASS SCREW AND WASHER.
 JV2701
 JV2701                          STATION RECOVERY (2002)
 JV2701
 JV2701'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV2701'THE STATION WAS SEARCHED FOR AND NOT RECOVERED. A 2 FOOR SQUARED
 JV2701'SECTION OF WHAT APPEARS TO BE THE HEADWALL WAS RECOVERED LAYING
 JV2701'SIDEWAYS AT THE DESCRIBED LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1852 ***********************************************************************
 JV1852  DESIGNATION -  57
 JV1852  PID         -  JV1852
 JV1852  STATE/COUNTY-  MD/FREDERICK
 JV1852  COUNTRY     -  US
 JV1852  USGS QUAD   -  WOODSBORO (2016)
 JV1852
 JV1852                         *CURRENT SURVEY CONTROL
 JV1852  ______________________________________________________________________
 JV1852* NAD 83(1986) POSITION- 39 30 22.     (N) 077 20 10.     (W)   SCALED
 JV1852* NAVD 88 ORTHO HEIGHT -   104.217 (meters)      341.92  (feet) ADJUSTED
 JV1852  ______________________________________________________________________
 JV1852  GEOID HEIGHT    -        -32.813 (meters)                     GEOID18
 JV1852  DYNAMIC HEIGHT  -        104.161 (meters)      341.73  (feet) COMP
 JV1852  MODELED GRAVITY -    980,088.8   (mgal)                       NAVD 88
 JV1852
 JV1852  VERT ORDER      -  SECOND    CLASS 0
 JV1852
 JV1852.The horizontal coordinates were scaled from a map and have
 JV1852.an estimated accuracy of +/- 6 seconds.
 JV1852
 JV1852.The orthometric height was determined by differential leveling and
 JV1852.adjusted by the NATIONAL GEODETIC SURVEY
 JV1852.in June 1991.
 JV1852
 JV1852.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1852.GEOID18 height accuracy estimate available here.
 JV1852
 JV1852.Click photographs - Photos may exist for this station.
 JV1852
 JV1852.The dynamic height is computed by dividing the NAVD 88
 JV1852.geopotential number by the normal gravity value computed on the
 JV1852.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1852.degrees latitude (g = 980.6199 gals.).
 JV1852
 JV1852.The modeled gravity was interpolated from observed gravity values.
 JV1852
 JV1852;                    North         East    Units  Estimated Accuracy
 JV1852;SPC MD       -   204,250.      371,090.      MT  (+/- 180 meters Scaled)
 JV1852
 JV1852_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ991755(NAD 83)
 JV1852
 JV1852                          SUPERSEDED SURVEY CONTROL
 JV1852
 JV1852  NGVD 29 (11/26/84)  104.433  (m)          342.63   (f) ADJUSTED    2 0
 JV1852
 JV1852.Superseded values are not recommended for survey control.
 JV1852
 JV1852.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1852.See file dsdata.pdf to determine how the superseded data were derived.
 JV1852
 JV1852
 JV1852  HISTORY     - Date     Condition        Report By
 JV1852  HISTORY     - UNK      MONUMENTED       PRR
 JV1852  HISTORY     - 1935     GOOD             CGS
 JV1852  HISTORY     - 20200115 MARK NOT FOUND   WTBALL
 JV1852
 JV1852                          STATION DESCRIPTION
 JV1852
 JV1852'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1852'1.8 MI NE FROM WALKERSVILLE.
 JV1852'ABOUT 1.8 MILES NORTHEAST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1852'THE STATION AT WALKERSVILLE, FREDERICK COUNTY, ABOUT 483 FEET
 JV1852'NORTH OF MILEPOST 8, AT THE CROSSING OF A WAGON ROAD LEADING
 JV1852'TO MC ALEER LIME KILNS, ABOUT 132 FEET SOUTH OF THE CENTER LINE
 JV1852'OF THE ROAD, 9 FEET EAST OF THE CENTER LINE OF THE TRACK, AND
 JV1852'IN THE TOP OF A ROCK OUTCROP.  AN IRON BOLT.
 JV1852
 JV1852                          STATION RECOVERY (2020)
 JV1852
 JV1852'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV1852'SEARCH WAS CONDUCTED AND MARK WAS NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0018 ***********************************************************************
 JV0018  DESIGNATION -  57 A
 JV0018  PID         -  JV0018
 JV0018  STATE/COUNTY-  MD/HARFORD
 JV0018  COUNTRY     -  US
 JV0018  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0018
 JV0018                         *CURRENT SURVEY CONTROL
 JV0018  ______________________________________________________________________
 JV0018* NAD 83(1986) POSITION- 39 33 09.36   (N) 076 05 31.24   (W)   HD_HELD1
 JV0018* NAVD 88 ORTHO HEIGHT -    17.364 (meters)       56.97  (feet) ADJUSTED
 JV0018  ______________________________________________________________________
 JV0018  GEOID HEIGHT    -        -33.142 (meters)                     GEOID18
 JV0018  DYNAMIC HEIGHT  -         17.355 (meters)       56.94  (feet) COMP
 JV0018  MODELED GRAVITY -    980,127.4   (mgal)                       NAVD 88
 JV0018
 JV0018  VERT ORDER      -  FIRST     CLASS I
 JV0018
 JV0018.The horizontal coordinates were determined by differentially corrected
 JV0018.hand held GPS observations or other comparable positioning techniques
 JV0018.and have an estimated accuracy of +/- 3 meters.
 JV0018
 JV0018.The orthometric height was determined by differential leveling and
 JV0018.adjusted by the NATIONAL GEODETIC SURVEY
 JV0018.in June 1991.
 JV0018
 JV0018.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0018.GEOID18 height accuracy estimate available here.
 JV0018
 JV0018.Click photographs - Photos may exist for this station.
 JV0018
 JV0018.The dynamic height is computed by dividing the NAVD 88
 JV0018.geopotential number by the normal gravity value computed on the
 JV0018.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0018.degrees latitude (g = 980.6199 gals.).
 JV0018
 JV0018.The modeled gravity was interpolated from observed gravity values.
 JV0018
 JV0018;                    North         East    Units  Estimated Accuracy
 JV0018;SPC MD       -   209,743.1     478,040.6     MT  (+/- 3 meters HH1 GPS) 
 JV0018
 JV0018_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0617978671(NAD 83)
 JV0018
 JV0018                          SUPERSEDED SURVEY CONTROL
 JV0018
 JV0018  NGVD 29 (11/26/84)   17.606  (m)           57.76   (f) ADJUSTED    1 1
 JV0018
 JV0018.Superseded values are not recommended for survey control.
 JV0018
 JV0018.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0018.See file dsdata.pdf to determine how the superseded data were derived.
 JV0018
 JV0018_MARKER: B = BOLT
 JV0018_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV0018_SP_SET: ABUTMENT
 JV0018_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0018_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0018+SATELLITE: SATELLITE OBSERVATIONS - November 02, 1989
 JV0018
 JV0018  HISTORY     - Date     Condition        Report By
 JV0018  HISTORY     - UNK      MONUMENTED       PRR
 JV0018  HISTORY     - 1955     GOOD             CGS
 JV0018  HISTORY     - 1971     GOOD             NGS
 JV0018  HISTORY     - 1979     GOOD             NGS
 JV0018  HISTORY     - 19891102 GOOD             NGS
 JV0018  HISTORY     - 19980425 GOOD             USPSQD
 JV0018  HISTORY     - 20020309 MARK NOT FOUND   USPSQD
 JV0018
 JV0018                          STATION DESCRIPTION
 JV0018
 JV0018'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0018'AT HAVRE DE GRACE.
 JV0018'AT HAVRE DE GRACE, ABOUT 0.2 MILE NORTHEAST ALONG THE
 JV0018'PENNSYLVANIA RAILROAD FROM THE STATION, A 1-INCH COPPER BOLT
 JV0018'IN THE TOP OF THE SOUTHEAST END OF STONE MASONRY BACK WALL
 JV0018'OF THE SOUTHWEST STONE MASONRY ABUTMENT OF RAILROAD BRIDGE OVER
 JV0018'SUSQUEHANNA RIVER, 8 FEET SOUTHEAST OF SOUTHEAST RAIL AND ABOUT
 JV0018'1 FOOT BELOW LEVEL OF TRACK.  NOTE-- 57 A IS CUT IN STONE JUST
 JV0018'SOUTHEAST OF THE BOLT.
 JV0018
 JV0018                          STATION RECOVERY (1971)
 JV0018
 JV0018'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0018'RECOVERED IN GOOD CONDITION.
 JV0018
 JV0018                          STATION RECOVERY (1979)
 JV0018
 JV0018'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0018'RECOVERED IN GOOD CONDITION.
 JV0018
 JV0018                          STATION RECOVERY (1989)
 JV0018
 JV0018'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0018'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN HAVRE DE
 JV0018'GRACE, AT THE INTERSECTION OF THE AMTRAK RAILROAD AND UNION AVENUE,
 JV0018'IN TOP OF AND 0.3 M (1.0 FT) NORTHWEST OF THE SOUTHEAST END OF THE
 JV0018'TOP STEP OF THE SOUTHWEST STONE ABUTMENT OF A RAILROAD BRIDGE
 JV0018'SPANNING THE SUSQUEHANNA RIVER, 23.0 M (75.5 FT) WEST OF THE CENTER
 JV0018'OF THE AVENUE, 12.5 M (41.0 FT) ABOVE THE LEVEL OF THE AVENUE, 2.5 M
 JV0018'(8.2 FT) SOUTHEAST OF THE NEAR RAIL, AND 0.4 M (1.3 FT) BELOW THE
 JV0018'LEVEL OF THE TRACK.  NOTE--57 A IS INSCRIBED IN THE STONE JUST
 JV0018'SOUTHWEST OF THE DISK.
 JV0018
 JV0018                          STATION RECOVERY (1998)
 JV0018
 JV0018'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV0018'RECOVERED IN GOOD CONDITION.
 JV0018
 JV0018                          STATION RECOVERY (2002)
 JV0018
 JV0018'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV0018'NOT FOUND. COVERED BY NEW SLEEPERS (RAILROAD TIES)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0196 ***********************************************************************
 HV0196  DESIGNATION -  58
 HV0196  PID         -  HV0196
 HV0196  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0196  COUNTRY     -  US
 HV0196  USGS QUAD   -  ANNAPOLIS (2016)
 HV0196
 HV0196                         *CURRENT SURVEY CONTROL
 HV0196  ______________________________________________________________________
 HV0196* NAD 83(1986) POSITION- 38 58 42.6    (N) 076 29 26.9    (W)   HD_HELD2
 HV0196* NAVD 88 ORTHO HEIGHT -    17.266 (meters)       56.65  (feet) ADJUSTED
 HV0196  ______________________________________________________________________
 HV0196  GEOID HEIGHT    -        -33.342 (meters)                     GEOID18
 HV0196  DYNAMIC HEIGHT  -         17.256 (meters)       56.61  (feet) COMP
 HV0196  MODELED GRAVITY -    980,074.3   (mgal)                       NAVD 88
 HV0196
 HV0196  VERT ORDER      -  FIRST     CLASS I
 HV0196
 HV0196.The horizontal coordinates were established by autonomous hand held GPS
 HV0196.observations and have an estimated accuracy of +/- 10 meters.
 HV0196
 HV0196.The orthometric height was determined by differential leveling and
 HV0196.adjusted by the NATIONAL GEODETIC SURVEY
 HV0196.in June 1991.
 HV0196
 HV0196.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0196.GEOID18 height accuracy estimate available here.
 HV0196
 HV0196.Click photographs - Photos may exist for this station.
 HV0196
 HV0196.The dynamic height is computed by dividing the NAVD 88
 HV0196.geopotential number by the normal gravity value computed on the
 HV0196.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0196.degrees latitude (g = 980.6199 gals.).
 HV0196
 HV0196.The modeled gravity was interpolated from observed gravity values.
 HV0196
 HV0196;                    North         East    Units  Estimated Accuracy
 HV0196;SPC MD       -   145,743.      444,121.      MT  (+/- 10 meters HH2 GPS)
 HV0196
 HV0196_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7086615447(NAD 83)
 HV0196
 HV0196                          SUPERSEDED SURVEY CONTROL
 HV0196
 HV0196  NGVD 29 (11/26/84)   17.511  (m)           57.45   (f) ADJUSTED    1 1
 HV0196
 HV0196.Superseded values are not recommended for survey control.
 HV0196
 HV0196.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0196.See file dsdata.pdf to determine how the superseded data were derived.
 HV0196
 HV0196_MARKER: DB = BENCH MARK DISK
 HV0196_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0196_SP_SET: BUILDING
 HV0196_STAMPING: 58 BALTO MARYLAND
 HV0196_MARK LOGO: USGS
 HV0196_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0196_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0196+SATELLITE: SATELLITE OBSERVATIONS - November 02, 2017
 HV0196
 HV0196  HISTORY     - Date     Condition        Report By
 HV0196  HISTORY     - 1902     MONUMENTED       USGS
 HV0196  HISTORY     - 1971     GOOD             NGS
 HV0196  HISTORY     - 20010331 GOOD             NGS
 HV0196  HISTORY     - 20031230 GOOD             GEOCAC
 HV0196  HISTORY     - 20050720 GOOD             USPSQD
 HV0196  HISTORY     - 20100314 GOOD             GEOCAC
 HV0196  HISTORY     - 20140708 GOOD             GEOCAC
 HV0196  HISTORY     - 20171102 GOOD             USPSQD
 HV0196
 HV0196                          STATION DESCRIPTION
 HV0196
 HV0196'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0196'AT ANNAPOLIS.
 HV0196'AT ANNAPOLIS, IN THE EAST ANGLE OF THE JUNCTION OF STATE CIRCLE
 HV0196'AND SCHOOL STREET, SET VERTICALLY IN THE SOUTHEAST BRICK FACE
 HV0196'AND AT THE SOUTH CORNER OF THE SOUTHEAST WING (OLD PART OF
 HV0196'BUILDING) OF THE STATE HOUSE, 75 FEET NORTHEAST OF THE NORTHEAST
 HV0196'CURB OF STATE CIRCLE, AND ABOUT 2 FEET ABOVE THE LEVEL OF THE
 HV0196'BRICK SIDEWALK.
 HV0196
 HV0196                          STATION RECOVERY (2001)
 HV0196
 HV0196'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0196'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0196
 HV0196                          STATION RECOVERY (2003)
 HV0196
 HV0196'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV0196'RECOVERED IN GOOD CONDITION.
 HV0196
 HV0196                          STATION RECOVERY (2005)
 HV0196
 HV0196'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV0196'RECOVERED IN GOOD CONDITION.
 HV0196
 HV0196                          STATION RECOVERY (2010)
 HV0196
 HV0196'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV0196'RECOVERED IN GOOD CONDITION.
 HV0196
 HV0196                          STATION RECOVERY (2014)
 HV0196
 HV0196'RECOVERY NOTE BY GEOCACHING 2014 (MFM)
 HV0196'RECOVERED AS DESCRIBED.
 HV0196
 HV0196                          STATION RECOVERY (2017)
 HV0196
 HV0196'RECOVERY NOTE BY US POWER SQUADRON 2017 (RTK)
 HV0196'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0409 ***********************************************************************
 HU0409  DESIGNATION -  58
 HU0409  PID         -  HU0409
 HU0409  STATE/COUNTY-  MD/WICOMICO
 HU0409  COUNTRY     -  US
 HU0409  USGS QUAD   -  DELMAR (2016)
 HU0409
 HU0409                         *CURRENT SURVEY CONTROL
 HU0409  ______________________________________________________________________
 HU0409* NAD 83(1986) POSITION- 38 27 20.     (N) 075 34 41.     (W)   SCALED
 HU0409* NAVD 88 ORTHO HEIGHT -    17.044 (meters)       55.92  (feet) ADJUSTED
 HU0409  ______________________________________________________________________
 HU0409  GEOID HEIGHT    -        -35.732 (meters)                     GEOID18
 HU0409  DYNAMIC HEIGHT  -         17.033 (meters)       55.88  (feet) COMP
 HU0409  MODELED GRAVITY -    980,012.6   (mgal)                       NAVD 88
 HU0409
 HU0409  VERT ORDER      -  FIRST     CLASS I
 HU0409
 HU0409.The horizontal coordinates were scaled from a map and have
 HU0409.an estimated accuracy of +/- 6 seconds.
 HU0409
 HU0409.The orthometric height was determined by differential leveling and
 HU0409.adjusted by the NATIONAL GEODETIC SURVEY
 HU0409.in June 1991.
 HU0409
 HU0409.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0409.GEOID18 height accuracy estimate available here.
 HU0409
 HU0409.Click photographs - Photos may exist for this station.
 HU0409
 HU0409.The dynamic height is computed by dividing the NAVD 88
 HU0409.geopotential number by the normal gravity value computed on the
 HU0409.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0409.degrees latitude (g = 980.6199 gals.).
 HU0409
 HU0409.The modeled gravity was interpolated from observed gravity values.
 HU0409
 HU0409;                    North         East    Units  Estimated Accuracy
 HU0409;SPC MD       -    88,540.      524,110.      MT  (+/- 180 meters Scaled)
 HU0409
 HU0409_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH495565(NAD 83)
 HU0409
 HU0409                          SUPERSEDED SURVEY CONTROL
 HU0409
 HU0409  NGVD 29 (11/26/84)   17.294  (m)           56.74   (f) ADJUSTED    1 1
 HU0409
 HU0409.Superseded values are not recommended for survey control.
 HU0409
 HU0409.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0409.See file dsdata.pdf to determine how the superseded data were derived.
 HU0409
 HU0409_MARKER: DD = SURVEY DISK
 HU0409_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0409_SP_SET: BUILDING
 HU0409_STAMPING: 56 BALTO MARYLAND
 HU0409_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0409
 HU0409  HISTORY     - Date     Condition        Report By
 HU0409  HISTORY     - 1900     MONUMENTED       USGS
 HU0409  HISTORY     - 1963     POOR             CGS
 HU0409  HISTORY     - 20040719 MARK NOT FOUND   GEOCAC
 HU0409
 HU0409                          STATION DESCRIPTION
 HU0409
 HU0409'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0409'AT DELMAR.
 HU0409'AT DELMAR, AT THE TOWN HALL, SET VERTICALLY IN THE NORTH FACE OF
 HU0409'THE BRICK BUILDING, NEAR THE NORTHWEST CORNER OF THE BUILDING, 39
 HU0409'FEET SOUTH OF THE DELAWARE-MARYLAND STATE LINE, 24 FEET SOUTH OF
 HU0409'CENTER LINE OF STATE STREET, AND 2 FEET ABOVE LEVEL OF SIDEWALK.
 HU0409'NOTE-- THE DISK IS CRUMBLING.
 HU0409
 HU0409                          STATION RECOVERY (2004)
 HU0409
 HU0409'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU0409'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4328 ***********************************************************************
 DS4328  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4328  DESIGNATION -  58
 DS4328  PID         -  DS4328
 DS4328  STATE/COUNTY-  MD/ANNE ARUNDEL
 DS4328  COUNTRY     -  US
 DS4328  USGS QUAD   -  RELAY (2016)
 DS4328
 DS4328                         *CURRENT SURVEY CONTROL
 DS4328  ______________________________________________________________________
 DS4328* NAD 83(2011) POSITION- 39 12 49.08768(N) 076 37 31.73986(W)   ADJUSTED
 DS4328* NAD 83(2011) ELLIP HT-    17.729 (meters)        (01/30/26)   ADJUSTED
 DS4328* NAD 83(2011) EPOCH   -  2010.00
 DS4328* NAVD 88 ORTHO HEIGHT -    50.52  (meters)      165.7   (feet) GPS OBS
 DS4328  ______________________________________________________________________
 DS4328  GEOID HEIGHT    -        -32.786 (meters)                     GEOID18
 DS4328  NAD 83(2011) X  -  1,144,635.843 (meters)                     COMP
 DS4328  NAD 83(2011) Y  - -4,814,175.225 (meters)                     COMP
 DS4328  NAD 83(2011) Z  -  4,010,732.150 (meters)                     COMP
 DS4328  LAPLACE CORR    -         -5.09  (seconds)                    DEFLEC18
 DS4328
 DS4328  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4328  Standards:
 DS4328         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4328            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4328  -------------------------------------------------------------------
 DS4328  NETWORK    0.73   1.67           0.33   0.26   0.85     -0.15122274
 DS4328  -------------------------------------------------------------------
 DS4328  Click here for local accuracies and other accuracy information.
 DS4328
 DS4328.The horizontal coordinates were established by GPS observations
 DS4328.and adjusted by the MD DOT HIGHWAY ADMIN in January 2026.
 DS4328
 DS4328.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4328.frame has been affixed to the stable North American tectonic plate 
 DS4328
 DS4328.The horizontal coordinates are valid at the epoch date displayed above
 DS4328.which is a decimal equivalence of Year/Month/Day.
 DS4328
 DS4328.The orthometric height was determined by GPS observations and a
 DS4328.high-resolution geoid model using precise GPS observation and
 DS4328.processing techniques.
 DS4328
 DS4328.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4328.GEOID18 height accuracy estimate available here.
 DS4328
 DS4328.Click photographs - Photos may exist for this station.
 DS4328
 DS4328.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4328
 DS4328.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4328
 DS4328.The ellipsoidal height was determined by GPS observations
 DS4328.and is referenced to NAD 83.
 DS4328
 DS4328. The following values were computed from the NAD 83(2011) position.
 DS4328
 DS4328;                    North         East     Units Scale Factor Converg.
 DS4328;SPC MD       -   171,788.851   432,344.096   MT  0.99996719   +0 14 06.2
 DS4328;SPC MD       -   563,610.59  1,418,448.92   sFT  0.99996719   +0 14 06.2
 DS4328;UTM  18      - 4,341,743.065   359,666.980   MT  0.99984248   -1 01 40.2
 DS4328
 DS4328!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4328!SPC MD       -   0.99999722  x   0.99996719  =   0.99996441
 DS4328!UTM  18      -   0.99999722  x   0.99984248  =   0.99983970
 DS4328
 DS4328_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5966641743(NAD 83)
 DS4328
 DS4328                          SUPERSEDED SURVEY CONTROL
 DS4328
 DS4328.No superseded survey control is available for this station.
 DS4328
 DS4328_MARKER: DD = SURVEY DISK
 DS4328_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS4328_STAMPING: 58
 DS4328_MARK LOGO: MD-003
 DS4328_PROJECTION: FLUSH
 DS4328_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS4328_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4328+SATELLITE: SATELLITE OBSERVATIONS - April 24, 2025
 DS4328
 DS4328  HISTORY     - Date     Condition        Report By
 DS4328  HISTORY     - 19730101 MONUMENTED       MD-003
 DS4328  HISTORY     - 20250424 GOOD             MDSHA
 DS4328
 DS4328                          STATION DESCRIPTION
 DS4328
 DS4328'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4328'THE MARK IS LOCATED ABOUT 5.3 MI (8.5 KM) SOUTH OF BALTIMORE, 4.3 MI
 DS4328'(6.9 KM) EAST-SOUTHEAST OF RELAY AND 2.2 MI (3.5 KM) WEST-SOUTHWEST OF
 DS4328'CURTIS BAY.
 DS4328'
 DS4328'TO REACH THE MARK FROM THE INTERSECTION OF MD 2 (GOVERNOR RITCHIE
 DS4328'HIGHWAY) AND HAMMONDS LANE PROCEED WEST ON HAMMONDS LANE FOR 1 KM (0.6
 DS4328'MI) TO THE MARK ON THE RIGHT.
 DS4328'
 DS4328'THE MARK IS 76.0 FT (23.2 M) NORTH-NORTHEAST OF THE CENTERLINE OF
 DS4328'TRILLO AVENUE, 59.2 FT (18.0 M) NORTH-NORTHEAST OF A UTILITY POLE
 DS4328'NUMBERED BGE 476847, 51.6 FT (15.7 M) NORTHEAST OF A FIRE HYDRANT,
 DS4328'37.8 FT (11.5 M) SOUTHEAST OF A UTILITY POLE WITH NO NUMBER, 29.2 FT
 DS4328'(8.9 M) NORTH OF THE CENTERLINE OF HAMMONDS LANE, 8.3 FT (2.5 M)
 DS4328'NORTHWEST OF THE OUTSIDE THE PARAPET WALL OF BRIDGE OVER HAMMONDS LANE
 DS4328'SET IN THE TOP OF A 3-IN (8 CM) SQUARE CONCRETE POST AND ABOUT 1 FT
 DS4328'(0.3 M) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0009 ***********************************************************************
 JV0009  DESIGNATION -  58 A
 JV0009  PID         -  JV0009
 JV0009  STATE/COUNTY-  MD/HARFORD
 JV0009  COUNTRY     -  US
 JV0009  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0009
 JV0009                         *CURRENT SURVEY CONTROL
 JV0009  ______________________________________________________________________
 JV0009* NAD 83(1986) POSITION- 39 32 42.     (N) 076 06 18.     (W)   SCALED
 JV0009* NAVD 88 ORTHO HEIGHT -    17.754 (meters)       58.25  (feet) ADJUSTED
 JV0009  ______________________________________________________________________
 JV0009  GEOID HEIGHT    -        -33.135 (meters)                     GEOID18
 JV0009  DYNAMIC HEIGHT  -         17.745 (meters)       58.22  (feet) COMP
 JV0009  MODELED GRAVITY -    980,127.8   (mgal)                       NAVD 88
 JV0009
 JV0009  VERT ORDER      -  FIRST     CLASS I
 JV0009
 JV0009.The horizontal coordinates were scaled from a map and have
 JV0009.an estimated accuracy of +/- 6 seconds.
 JV0009
 JV0009.The orthometric height was determined by differential leveling and
 JV0009.adjusted by the NATIONAL GEODETIC SURVEY
 JV0009.in June 1991.
 JV0009
 JV0009.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0009.GEOID18 height accuracy estimate available here.
 JV0009
 JV0009.Click photographs - Photos may exist for this station.
 JV0009
 JV0009.The dynamic height is computed by dividing the NAVD 88
 JV0009.geopotential number by the normal gravity value computed on the
 JV0009.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0009.degrees latitude (g = 980.6199 gals.).
 JV0009
 JV0009.The modeled gravity was interpolated from observed gravity values.
 JV0009
 JV0009;                    North         East    Units  Estimated Accuracy
 JV0009;SPC MD       -   208,890.      476,930.      MT  (+/- 180 meters Scaled)
 JV0009
 JV0009_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ050778(NAD 83)
 JV0009
 JV0009                          SUPERSEDED SURVEY CONTROL
 JV0009
 JV0009  NGVD 29 (11/26/84)   17.998  (m)           59.05   (f) ADJUSTED    1 1
 JV0009
 JV0009.Superseded values are not recommended for survey control.
 JV0009
 JV0009.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0009.See file dsdata.pdf to determine how the superseded data were derived.
 JV0009
 JV0009_MARKER: B = BOLT
 JV0009_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0009_SP_SET: FOUNDATION
 JV0009_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0009
 JV0009  HISTORY     - Date     Condition        Report By
 JV0009  HISTORY     - UNK      MONUMENTED       PRR
 JV0009  HISTORY     - 1971     GOOD             NGS
 JV0009  HISTORY     - 1979     GOOD             NGS
 JV0009  HISTORY     - 19891107 MARK NOT FOUND   NGS
 JV0009  HISTORY     - 20020309 MARK NOT FOUND   USPSQD
 JV0009
 JV0009                          STATION DESCRIPTION
 JV0009
 JV0009'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0009'1 MI SW FROM HAVRE DE GRACE.
 JV0009'ABOUT 0.95 MILE SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV0009'THE SOUTHWEST END OF THE SUSQUEHANNA RIVER BRIDGE AT HARVE DE
 JV0009'GRACE, ABOUT 0.6 MILE SOUTHWEST OF THE RAILROAD OVERPASS FOR
 JV0009'JUNIATA STREET, 21 1/2 FEET SOUTHEAST OF THE SOUTHEAST RAIL OF
 JV0009'THE SOUTHEAST TRACK SET IN THE TOP AND 1.2 FEET NORTH OF THE
 JV0009'SOUTH CORNER OF THE STONE FOUNDATION FOR THE SOUTHEAST METAL PIER
 JV0009'FOR AN OVERPASS, ABOUT 6 FEET ABOVE THE LEVEL OF THE TRACK AND
 JV0009'ABOUT 5 FEET ABOVE THE LEVEL OF THE GROUND.
 JV0009
 JV0009                          STATION RECOVERY (1979)
 JV0009
 JV0009'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0009'RECOVERED IN GOOD CONDITION.
 JV0009
 JV0009                          STATION RECOVERY (1989)
 JV0009
 JV0009'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0009'THERE HAS BEEN CONSTRUCTION AT THE DESCRIBED LOCATION.
 JV0009
 JV0009                          STATION RECOVERY (2002)
 JV0009
 JV0009'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV0009'NOT FOUND - BRIDGE REBUILT IN LAST 10 YEARS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1198 ***********************************************************************
 JV1198  DESIGNATION -  5809 C OF B
 JV1198  PID         -  JV1198
 JV1198  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1198  COUNTRY     -  US
 JV1198  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1198
 JV1198                         *CURRENT SURVEY CONTROL
 JV1198  ______________________________________________________________________
 JV1198* NAD 83(1986) POSITION- 39 21 02.     (N) 076 38 50.     (W)   SCALED
 JV1198* NAVD 88 ORTHO HEIGHT -    58.686 (meters)      192.54  (feet) ADJUSTED
 JV1198  ______________________________________________________________________
 JV1198  GEOID HEIGHT    -        -32.518 (meters)                     GEOID18
 JV1198  DYNAMIC HEIGHT  -         58.655 (meters)      192.44  (feet) COMP
 JV1198  MODELED GRAVITY -    980,101.9   (mgal)                       NAVD 88
 JV1198
 JV1198  VERT ORDER      -  SECOND    CLASS 0
 JV1198
 JV1198.The horizontal coordinates were scaled from a map and have
 JV1198.an estimated accuracy of +/- 6 seconds.
 JV1198
 JV1198.The orthometric height was determined by differential leveling and
 JV1198.adjusted by the NATIONAL GEODETIC SURVEY
 JV1198.in June 1991.
 JV1198
 JV1198.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1198.GEOID18 height accuracy estimate available here.
 JV1198
 JV1198.Click photographs - Photos may exist for this station.
 JV1198
 JV1198.The dynamic height is computed by dividing the NAVD 88
 JV1198.geopotential number by the normal gravity value computed on the
 JV1198.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1198.degrees latitude (g = 980.6199 gals.).
 JV1198
 JV1198.The modeled gravity was interpolated from observed gravity values.
 JV1198
 JV1198;                    North         East    Units  Estimated Accuracy
 JV1198;SPC MD       -   186,980.      430,410.      MT  (+/- 180 meters Scaled)
 JV1198
 JV1198_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ580569(NAD 83)
 JV1198
 JV1198                          SUPERSEDED SURVEY CONTROL
 JV1198
 JV1198  NGVD 29 (11/26/84)   58.916  (m)          193.29   (f) ADJUSTED    2 0
 JV1198
 JV1198.Superseded values are not recommended for survey control.
 JV1198
 JV1198.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1198.See file dsdata.pdf to determine how the superseded data were derived.
 JV1198
 JV1198_MARKER: Z = SEE DESCRIPTION
 JV1198_SETTING: 66 = SET IN ROCK OUTCROP
 JV1198_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV1198+STABILITY: POSITION/ELEVATION WELL
 JV1198
 JV1198  HISTORY     - Date     Condition        Report By
 JV1198  HISTORY     - UNK      MONUMENTED       MD0050
 JV1198  HISTORY     - 1935     GOOD             CGS
 JV1198
 JV1198                          STATION DESCRIPTION
 JV1198
 JV1198'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1198'AT BALTIMORE.
 JV1198'AT BALTIMORE, 0.4 MILE NORTH OF COLD SPRING LANE, AT THE BALTIMORE
 JV1198'COUNTRY CLUB, OPPOSITE GOLF GREEN 4, AND IN THE TOP OF A ROCK
 JV1198'OUTCROP, AND ABOUT 4 FEET HIGHER THAN THE TRACK.  A BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1196 ***********************************************************************
 JV1196  DESIGNATION -  5821 C OF B
 JV1196  PID         -  JV1196
 JV1196  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1196  COUNTRY     -  US
 JV1196  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1196
 JV1196                         *CURRENT SURVEY CONTROL
 JV1196  ______________________________________________________________________
 JV1196* NAD 83(1986) POSITION- 39 21 23.     (N) 076 39 01.     (W)   SCALED
 JV1196* NAVD 88 ORTHO HEIGHT -    59.429 (meters)      194.98  (feet) ADJUSTED
 JV1196  ______________________________________________________________________
 JV1196  GEOID HEIGHT    -        -32.504 (meters)                     GEOID18
 JV1196  DYNAMIC HEIGHT  -         59.398 (meters)      194.87  (feet) COMP
 JV1196  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 JV1196
 JV1196  VERT ORDER      -  SECOND    CLASS 0
 JV1196
 JV1196.The horizontal coordinates were scaled from a map and have
 JV1196.an estimated accuracy of +/- 6 seconds.
 JV1196
 JV1196.The orthometric height was determined by differential leveling and
 JV1196.adjusted by the NATIONAL GEODETIC SURVEY
 JV1196.in June 1991.
 JV1196
 JV1196.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1196.GEOID18 height accuracy estimate available here.
 JV1196
 JV1196.Click photographs - Photos may exist for this station.
 JV1196
 JV1196.The dynamic height is computed by dividing the NAVD 88
 JV1196.geopotential number by the normal gravity value computed on the
 JV1196.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1196.degrees latitude (g = 980.6199 gals.).
 JV1196
 JV1196.The modeled gravity was interpolated from observed gravity values.
 JV1196
 JV1196;                    North         East    Units  Estimated Accuracy
 JV1196;SPC MD       -   187,630.      430,140.      MT  (+/- 180 meters Scaled)
 JV1196
 JV1196_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ578576(NAD 83)
 JV1196
 JV1196                          SUPERSEDED SURVEY CONTROL
 JV1196
 JV1196  NGVD 29 (11/26/84)   59.658  (m)          195.73   (f) ADJUSTED    2 0
 JV1196
 JV1196.Superseded values are not recommended for survey control.
 JV1196
 JV1196.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1196.See file dsdata.pdf to determine how the superseded data were derived.
 JV1196
 JV1196_MARKER: Z = SEE DESCRIPTION
 JV1196_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1196_SP_SET: SIGNAL TOWER BASE
 JV1196_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1196
 JV1196  HISTORY     - Date     Condition        Report By
 JV1196  HISTORY     - UNK      MONUMENTED       MD0050
 JV1196  HISTORY     - 1935     GOOD             CGS
 JV1196
 JV1196                          STATION DESCRIPTION
 JV1196
 JV1196'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1196'AT BALTIMORE.
 JV1196'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, 0.2 MILE SOUTH OF
 JV1196'BELVEDERE AVENUE, ON THE WEST SIDE OF THE TRACK, AT SIGNAL TOWER
 JV1196'N 52, AND IN THE TOP OF THE NORTHEAST CORNER OF THE CONCRETE
 JV1196'BASE.  A BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1197 ***********************************************************************
 JV1197  DESIGNATION -  5822 C OF B
 JV1197  PID         -  JV1197
 JV1197  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1197  COUNTRY     -  US
 JV1197  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1197
 JV1197                         *CURRENT SURVEY CONTROL
 JV1197  ______________________________________________________________________
 JV1197* NAD 83(1986) POSITION- 39 21 15.     (N) 076 38 55.     (W)   SCALED
 JV1197* NAVD 88 ORTHO HEIGHT -    60.147 (meters)      197.33  (feet) ADJUSTED
 JV1197  ______________________________________________________________________
 JV1197  GEOID HEIGHT    -        -32.511 (meters)                     GEOID18
 JV1197  DYNAMIC HEIGHT  -         60.115 (meters)      197.23  (feet) COMP
 JV1197  MODELED GRAVITY -    980,101.6   (mgal)                       NAVD 88
 JV1197
 JV1197  VERT ORDER      -  SECOND    CLASS 0
 JV1197
 JV1197.The horizontal coordinates were scaled from a map and have
 JV1197.an estimated accuracy of +/- 6 seconds.
 JV1197
 JV1197.The orthometric height was determined by differential leveling and
 JV1197.adjusted by the NATIONAL GEODETIC SURVEY
 JV1197.in June 1991.
 JV1197
 JV1197.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1197.GEOID18 height accuracy estimate available here.
 JV1197
 JV1197.Click photographs - Photos may exist for this station.
 JV1197
 JV1197.The dynamic height is computed by dividing the NAVD 88
 JV1197.geopotential number by the normal gravity value computed on the
 JV1197.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1197.degrees latitude (g = 980.6199 gals.).
 JV1197
 JV1197.The modeled gravity was interpolated from observed gravity values.
 JV1197
 JV1197;                    North         East    Units  Estimated Accuracy
 JV1197;SPC MD       -   187,380.      430,290.      MT  (+/- 180 meters Scaled)
 JV1197
 JV1197_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ579573(NAD 83)
 JV1197
 JV1197                          SUPERSEDED SURVEY CONTROL
 JV1197
 JV1197  NGVD 29 (11/26/84)   60.376  (m)          198.08   (f) ADJUSTED    2 0
 JV1197
 JV1197.Superseded values are not recommended for survey control.
 JV1197
 JV1197.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1197.See file dsdata.pdf to determine how the superseded data were derived.
 JV1197
 JV1197_MARKER: Z = SEE DESCRIPTION
 JV1197_SETTING: 66 = SET IN ROCK OUTCROP
 JV1197_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV1197+STABILITY: POSITION/ELEVATION WELL
 JV1197
 JV1197  HISTORY     - Date     Condition        Report By
 JV1197  HISTORY     - UNK      MONUMENTED       MD0050
 JV1197  HISTORY     - 1935     GOOD             CGS
 JV1197
 JV1197                          STATION DESCRIPTION
 JV1197
 JV1197'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1197'AT BALTIMORE.
 JV1197'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, 100 FEET SOUTH OF
 JV1197'MILEPOST 5, 0.4 MILE SOUTH OF BELVEDERE AVENUE, ON THE WEST SIDE
 JV1197'OF THE TRACK, IN THE TOP OF A ROCK OUTCROP, AND ABOUT 4 FEET
 JV1197'HIGHER THAN THE TRACK.  A BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1194 ***********************************************************************
 JV1194  DESIGNATION -  5823 C OF B
 JV1194  PID         -  JV1194
 JV1194  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1194  COUNTRY     -  US
 JV1194  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1194
 JV1194                         *CURRENT SURVEY CONTROL
 JV1194  ______________________________________________________________________
 JV1194* NAD 83(1986) POSITION- 39 21 45.     (N) 076 39 01.     (W)   SCALED
 JV1194* NAVD 88 ORTHO HEIGHT -    60.254 (meters)      197.68  (feet) ADJUSTED
 JV1194  ______________________________________________________________________
 JV1194  GEOID HEIGHT    -        -32.499 (meters)                     GEOID18
 JV1194  DYNAMIC HEIGHT  -         60.222 (meters)      197.58  (feet) COMP
 JV1194  MODELED GRAVITY -    980,100.9   (mgal)                       NAVD 88
 JV1194
 JV1194  VERT ORDER      -  SECOND    CLASS 0
 JV1194
 JV1194.The horizontal coordinates were scaled from a map and have
 JV1194.an estimated accuracy of +/- 6 seconds.
 JV1194
 JV1194.The orthometric height was determined by differential leveling and
 JV1194.adjusted by the NATIONAL GEODETIC SURVEY
 JV1194.in June 1991.
 JV1194
 JV1194.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1194.GEOID18 height accuracy estimate available here.
 JV1194
 JV1194.Click photographs - Photos may exist for this station.
 JV1194
 JV1194.The dynamic height is computed by dividing the NAVD 88
 JV1194.geopotential number by the normal gravity value computed on the
 JV1194.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1194.degrees latitude (g = 980.6199 gals.).
 JV1194
 JV1194.The modeled gravity was interpolated from observed gravity values.
 JV1194
 JV1194;                    North         East    Units  Estimated Accuracy
 JV1194;SPC MD       -   188,310.      430,140.      MT  (+/- 180 meters Scaled)
 JV1194
 JV1194_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ578583(NAD 83)
 JV1194
 JV1194                          SUPERSEDED SURVEY CONTROL
 JV1194
 JV1194  NGVD 29 (11/26/84)   60.483  (m)          198.43   (f) ADJUSTED    2 0
 JV1194
 JV1194.Superseded values are not recommended for survey control.
 JV1194
 JV1194.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1194.See file dsdata.pdf to determine how the superseded data were derived.
 JV1194
 JV1194_MARKER: Q = CHISELED SQUARE
 JV1194_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1194_SP_SET: CULVERT
 JV1194_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1194
 JV1194  HISTORY     - Date     Condition        Report By
 JV1194  HISTORY     - UNK      MONUMENTED       MD0050
 JV1194  HISTORY     - 1935     GOOD             CGS
 JV1194
 JV1194                          STATION DESCRIPTION
 JV1194
 JV1194'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1194'AT BALTIMORE.
 JV1194'AT BALTIMORE, ON THE PENNSYLVANIA RAILROAD, ABOUT 1,000 FEET NORTH
 JV1194'OF BELVEDERE AVENUE, OPPOSITE A DISPOSAL PLANT, AT A GRANITE
 JV1194'CULVERT AT THE WEST SIDE OF THE TRACK, AND ON THE TOP OF THE
 JV1194'SOUTHWEST CORNER.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2965 ***********************************************************************
 JV2965  DESIGNATION -  583
 JV2965  PID         -  JV2965
 JV2965  STATE/COUNTY-  MD/FREDERICK
 JV2965  COUNTRY     -  US
 JV2965  USGS QUAD   -  POINT OF ROCKS (2016)
 JV2965
 JV2965                         *CURRENT SURVEY CONTROL
 JV2965  ______________________________________________________________________
 JV2965* NAD 83(1986) POSITION- 39 21 42.     (N) 077 31 55.     (W)   SCALED
 JV2965* NAVD 88 ORTHO HEIGHT -   177.418 (meters)      582.08  (feet) ADJUSTED
 JV2965  ______________________________________________________________________
 JV2965  GEOID HEIGHT    -        -32.856 (meters)                     GEOID18
 JV2965  DYNAMIC HEIGHT  -        177.320 (meters)      581.76  (feet) COMP
 JV2965  MODELED GRAVITY -    980,070.3   (mgal)                       NAVD 88
 JV2965
 JV2965  VERT ORDER      -  SECOND    CLASS 0
 JV2965
 JV2965.The horizontal coordinates were scaled from a map and have
 JV2965.an estimated accuracy of +/- 6 seconds.
 JV2965
 JV2965.The orthometric height was determined by differential leveling and
 JV2965.adjusted by the NATIONAL GEODETIC SURVEY
 JV2965.in June 1991.
 JV2965
 JV2965.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2965.GEOID18 height accuracy estimate available here.
 JV2965
 JV2965.Click photographs - Photos may exist for this station.
 JV2965
 JV2965.The dynamic height is computed by dividing the NAVD 88
 JV2965.geopotential number by the normal gravity value computed on the
 JV2965.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2965.degrees latitude (g = 980.6199 gals.).
 JV2965
 JV2965.The modeled gravity was interpolated from observed gravity values.
 JV2965
 JV2965;                    North         East    Units  Estimated Accuracy
 JV2965;SPC MD       -   188,290.      354,160.      MT  (+/- 180 meters Scaled)
 JV2965
 JV2965_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ818599(NAD 83)
 JV2965
 JV2965                          SUPERSEDED SURVEY CONTROL
 JV2965
 JV2965  NGVD 29 (11/26/84)  177.633  (m)          582.78   (f) ADJUSTED    2 0
 JV2965
 JV2965.Superseded values are not recommended for survey control.
 JV2965
 JV2965.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2965.See file dsdata.pdf to determine how the superseded data were derived.
 JV2965
 JV2965_MARKER: DD = SURVEY DISK
 JV2965_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2965_SP_SET: BUILDING
 JV2965_STAMPING: 583 ADJ MARYLAND
 JV2965_MARK LOGO: USGS
 JV2965_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2965
 JV2965  HISTORY     - Date     Condition        Report By
 JV2965  HISTORY     - 1907     MONUMENTED       USGS
 JV2965  HISTORY     - 1942     GOOD             CGS
 JV2965
 JV2965                          STATION DESCRIPTION
 JV2965
 JV2965'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2965'AT JEFFERSON.
 JV2965'AT JEFFERSON, FREDERICK COUNTY, AT THE PUBLIC SCHOOL, 133 FEET
 JV2965'SOUTH OF THE CENTER LINE OF U.S. HIGHWAY 340, IN THE NORTH WALL
 JV2965'AT THE NORTHWEST CORNER OF THE BUILDING, AND 1 FOOT EAST OF THE
 JV2965'WEST CORNER.  A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK,
 JV2965'STAMPED 583 ADJ MARYLAND AND SET VERTICALLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4027 ***********************************************************************
 JV4027  DESIGNATION -  583 RESET
 JV4027  PID         -  JV4027
 JV4027  STATE/COUNTY-  MD/FREDERICK
 JV4027  COUNTRY     -  US
 JV4027  USGS QUAD   -  POINT OF ROCKS (2016)
 JV4027
 JV4027                         *CURRENT SURVEY CONTROL
 JV4027  ______________________________________________________________________
 JV4027* NAD 83(1986) POSITION- 39 21 35.0    (N) 077 31 55.1    (W)   HD_HELD2
 JV4027* NAVD 88 ORTHO HEIGHT -   170.656 (meters)      559.89  (feet) ADJUSTED
 JV4027  ______________________________________________________________________
 JV4027  GEOID HEIGHT    -        -32.853 (meters)                     GEOID18
 JV4027  DYNAMIC HEIGHT  -        170.562 (meters)      559.59  (feet) COMP
 JV4027  MODELED GRAVITY -    980,070.2   (mgal)                       NAVD 88
 JV4027
 JV4027  VERT ORDER      -  SECOND    CLASS I
 JV4027
 JV4027.The horizontal coordinates were established by autonomous hand held GPS
 JV4027.observations and have an estimated accuracy of +/- 10 meters.
 JV4027
 JV4027.The orthometric height was determined by differential leveling and
 JV4027.adjusted by the NATIONAL GEODETIC SURVEY
 JV4027.in November 2003.
 JV4027
 JV4027.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4027.GEOID18 height accuracy estimate available here.
 JV4027
 JV4027.Click photographs - Photos may exist for this station.
 JV4027
 JV4027.The dynamic height is computed by dividing the NAVD 88
 JV4027.geopotential number by the normal gravity value computed on the
 JV4027.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV4027.degrees latitude (g = 980.6199 gals.).
 JV4027
 JV4027.The modeled gravity was interpolated from observed gravity values.
 JV4027
 JV4027;                    North         East    Units  Estimated Accuracy
 JV4027;SPC MD       -   188,074.      354,152.      MT  (+/- 10 meters HH2 GPS)
 JV4027
 JV4027_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8185259754(NAD 83)
 JV4027
 JV4027                          SUPERSEDED SURVEY CONTROL
 JV4027
 JV4027  NGVD 29 (??/??/??)  170.88   (m)          560.6    (f) RESET       3  
 JV4027
 JV4027.Superseded values are not recommended for survey control.
 JV4027
 JV4027.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4027.See file dsdata.pdf to determine how the superseded data were derived.
 JV4027
 JV4027_MARKER: DV = VERTICAL CONTROL DISK
 JV4027_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV4027_SP_SET: BRIDGE SIDEWALK
 JV4027_STAMPING: 583 USGS RESET 1980
 JV4027_MARK LOGO: NGS
 JV4027_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV4027_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV4027_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4027+SATELLITE: SATELLITE OBSERVATIONS - April 04, 2020
 JV4027
 JV4027  HISTORY     - Date     Condition        Report By
 JV4027  HISTORY     - 1980     MONUMENTED       NGS
 JV4027  HISTORY     - 20011105 GOOD             MDSHA
 JV4027  HISTORY     - 20200404 GOOD             WSRR
 JV4027
 JV4027                          STATION DESCRIPTION
 JV4027
 JV4027'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 JV4027'AT JEFFERSON.
 JV4027'AT JEFFERSON, FREDERICK COUNTY, ON THE NW CORNER OF A HIGHWAY OVERPASS
 JV4027'BRIDGE WHERE LANDER ROAD CROSSES OVER US HIGHWAY 340 WHICH IS NEAR
 JV4027'JEFFERSON, 16 FT W OF THE CENTER OF LANDER ROAD, 9 FT SOUTH OF THE
 JV4027'NORTHWEST CORNER OF THE BRIDGE, 1.5 FT NORTH OF THE MOST NORTHERLY
 JV4027'EXPANSION JOINT, 1 FOOT WEST OF THE EAST EDGE OF THE WEST BUMPER
 JV4027'RAIL OF LANDER ROAD AND 0.5 FOOT EAST OF THE EAST EDGE OF THE WEST
 JV4027'PARAPET WALL, 0.5 FOOT ABOVE THE LEVEL OF LANDER ROAD.
 JV4027
 JV4027                          STATION RECOVERY (2001)
 JV4027
 JV4027'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV4027'RECOVERED AS DESCRIBED.
 JV4027
 JV4027                          STATION RECOVERY (2020)
 JV4027
 JV4027'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV4027'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8112 ***********************************************************************
 AI8112  DESIGNATION -  5901
 AI8112  PID         -  AI8112
 AI8112  STATE/COUNTY-  MD/C OF BALTIMORE
 AI8112  COUNTRY     -  US
 AI8112  USGS QUAD   -  BALTIMORE EAST (2016)
 AI8112
 AI8112                         *CURRENT SURVEY CONTROL
 AI8112  ______________________________________________________________________
 AI8112* NAD 83(2011) POSITION- 39 21 53.47834(N) 076 32 51.28396(W)   ADJUSTED
 AI8112* NAD 83(2011) ELLIP HT-    55.328 (meters)        (06/27/12)   ADJUSTED
 AI8112* NAD 83(2011) EPOCH   -  2010.00
 AI8112* NAVD 88 ORTHO HEIGHT -    88.1   (meters)      289.    (feet) GPS OBS
 AI8112  ______________________________________________________________________
 AI8112  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8112  GEOID HEIGHT    -        -32.752 (meters)                     GEOID99
 AI8112  GEOID HEIGHT    -        -32.759 (meters)                     GEOID18
 AI8112  NAD 83(2011) X  -  1,148,714.119 (meters)                     COMP
 AI8112  NAD 83(2011) Y  - -4,802,303.243 (meters)                     COMP
 AI8112  NAD 83(2011) Z  -  4,023,749.685 (meters)                     COMP
 AI8112  LAPLACE CORR    -         -4.29  (seconds)                    DEFLEC18
 AI8112
 AI8112  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8112  Standards:
 AI8112         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8112            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8112  -------------------------------------------------------------------
 AI8112  NETWORK    0.81   1.22           0.36   0.29   0.62     -0.12895919
 AI8112  -------------------------------------------------------------------
 AI8112  Click here for local accuracies and other accuracy information.
 AI8112
 AI8112.The horizontal coordinates were established by GPS observations
 AI8112.and adjusted by the National Geodetic Survey in June 2012.
 AI8112
 AI8112.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8112.been affixed to the stable North American tectonic plate. See 
 AI8112.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8112
 AI8112.The horizontal coordinates are valid at the epoch date displayed above
 AI8112.which is a decimal equivalence of Year/Month/Day.
 AI8112
 AI8112.The orthometric height was determined by GPS observations and a
 AI8112.high-resolution geoid model.
 AI8112
 AI8112.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8112.GEOID18 height accuracy estimate available here.
 AI8112
 AI8112.Click photographs - Photos may exist for this station.
 AI8112
 AI8112.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8112
 AI8112.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8112
 AI8112.The ellipsoidal height was determined by GPS observations
 AI8112.and is referenced to NAD 83.
 AI8112
 AI8112. The following values were computed from the NAD 83(2011) position.
 AI8112
 AI8112;                    North         East     Units Scale Factor Converg.
 AI8112;SPC MD       -   188,607.272   438,988.844   MT  0.99998621   +0 17 02.2
 AI8112;SPC MD       -   618,789.02  1,440,249.23   sFT  0.99998621   +0 17 02.2
 AI8112;UTM  18      - 4,358,408.353   366,680.177   MT  0.99981884   -0 58 54.1
 AI8112
 AI8112!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8112!SPC MD       -   0.99999132  x   0.99998621  =   0.99997753
 AI8112!UTM  18      -   0.99999132  x   0.99981884  =   0.99981016
 AI8112
 AI8112_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6668058408(NAD 83)
 AI8112
 AI8112                          SUPERSEDED SURVEY CONTROL
 AI8112
 AI8112  NAD 83(2007)-  39 21 53.47856(N)    076 32 51.28472(W) AD(2002.00) 0
 AI8112  ELLIP H (02/10/07)   55.345  (m)                       GP(2002.00)    
 AI8112  ELLIP H (08/30/02)   55.353  (m)                       GP(       ) 4 2
 AI8112  NAD 83(1991)-  39 21 53.47904(N)    076 32 51.28447(W) AD(       ) 1
 AI8112  ELLIP H (10/26/00)   55.326  (m)                       GP(       ) 4 1
 AI8112
 AI8112.Superseded values are not recommended for survey control.
 AI8112
 AI8112.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8112.See file dsdata.pdf to determine how the superseded data were derived.
 AI8112
 AI8112_MARKER: B = BOLT
 AI8112_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 AI8112_MARK LOGO: MD0050
 AI8112_MAGNETIC: I = MARKER IS A STEEL ROD
 AI8112_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI8112_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8112+SATELLITE: SATELLITE OBSERVATIONS - 1999
 AI8112
 AI8112  HISTORY     - Date     Condition        Report By
 AI8112  HISTORY     - 1999     MONUMENTED       MD0050
 AI8112  HISTORY     - 20040110 MARK NOT FOUND   USPSQD
 AI8112
 AI8112                          STATION DESCRIPTION
 AI8112
 AI8112'DESCRIBED BY CITY OF BALTIMORE MARYLAND 1999
 AI8112'THE STATION IS LOCATED 6.5 MILES (10.5 KM) N.E.  OF THE INNER HARBOR
 AI8112'OF BALTIMORE CITY.  THE POINT IS A CUT-OFF SPIKE IN A CONCRETE WALK ON
 AI8112'THE NORTH SIDE OF CHESLEY AVE.  AT ENTRANCE TO NO.  3026.  IT IS 6.78
 AI8112'FT.  (2.07 M) N.W.  OF WATER VALVE, 27.50 FT.  (8.38 M) S.E.  OF THE
 AI8112'LEFT FRONT CORNER OF HSE NO.  3026, 5.39 FT.  (1.64 M) S.W.  OF THE
 AI8112'BOTTOM RIGHT CORNER OF STEPS LEADING UP TO HSE NO.  3026.
 AI8112
 AI8112                          STATION RECOVERY (2004)
 AI8112
 AI8112'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 AI8112'OWNER AT 3026 CHESLEY AVENUE SAID SIDEWALK AND STEPS WERE REPLACED A
 AI8112'YEAR AGO.  MARK WAS PROBABLY NOT REPLACED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0412 ***********************************************************************
 JW0412  DESIGNATION -  594
 JW0412  PID         -  JW0412
 JW0412  STATE/COUNTY-  MD/ALLEGANY
 JW0412  COUNTRY     -  US
 JW0412  USGS QUAD   -  CRESAPTOWN (2016)
 JW0412
 JW0412                         *CURRENT SURVEY CONTROL
 JW0412  ______________________________________________________________________
 JW0412* NAD 83(1986) POSITION- 39 35 25.     (N) 078 49 33.     (W)   SCALED
 JW0412* NAVD 88 ORTHO HEIGHT -   199.960 (meters)      656.04  (feet) ADJUSTED
 JW0412  ______________________________________________________________________
 JW0412  GEOID HEIGHT    -        -32.605 (meters)                     GEOID18
 JW0412  DYNAMIC HEIGHT  -        199.842 (meters)      655.65  (feet) COMP
 JW0412  MODELED GRAVITY -    980,033.1   (mgal)                       NAVD 88
 JW0412
 JW0412  VERT ORDER      -  SECOND    CLASS 0
 JW0412
 JW0412.The horizontal coordinates were scaled from a map and have
 JW0412.an estimated accuracy of +/- 6 seconds.
 JW0412
 JW0412.The orthometric height was determined by differential leveling and
 JW0412.adjusted by the NATIONAL GEODETIC SURVEY
 JW0412.in June 1991.
 JW0412
 JW0412.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0412.GEOID18 height accuracy estimate available here.
 JW0412
 JW0412.Click photographs - Photos may exist for this station.
 JW0412
 JW0412.The dynamic height is computed by dividing the NAVD 88
 JW0412.geopotential number by the normal gravity value computed on the
 JW0412.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0412.degrees latitude (g = 980.6199 gals.).
 JW0412
 JW0412.The modeled gravity was interpolated from observed gravity values.
 JW0412
 JW0412;                    North         East    Units  Estimated Accuracy
 JW0412;SPC MD       -   215,110.      243,160.      MT  (+/- 180 meters Scaled)
 JW0412
 JW0412_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD866845(NAD 83)
 JW0412
 JW0412                          SUPERSEDED SURVEY CONTROL
 JW0412
 JW0412  NGVD 29 (??/??/92)  200.160  (m)          656.69   (f) ADJ UNCH    2 0
 JW0412
 JW0412.Superseded values are not recommended for survey control.
 JW0412
 JW0412.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0412.See file dsdata.pdf to determine how the superseded data were derived.
 JW0412
 JW0412_MARKER: DD = SURVEY DISK
 JW0412_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0412_SP_SET: CULVERT
 JW0412_STAMPING: 594 USED
 JW0412_MARK LOGO: USACE
 JW0412_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0412
 JW0412  HISTORY     - Date     Condition        Report By
 JW0412  HISTORY     - UNK      MONUMENTED       USACE
 JW0412  HISTORY     - 1934     GOOD             CGS
 JW0412  HISTORY     - 1935     GOOD             CGS
 JW0412
 JW0412                          STATION DESCRIPTION
 JW0412
 JW0412'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JW0412'5.4 MI NE FROM RAWLINGS.
 JW0412'5.4 MILES NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JW0412'RAWLINGS, ALLEGANY COUNTY, 24 YARDS EAST OF POLE 135/30, AT A
 JW0412'CONCRETE CULVERT, IN THE TOP OF THE HEADWALL, 10 YARDS SOUTHEAST
 JW0412'OF THE CENTER LINE OF THE NORTH-BOUND TRACK, AND ABOUT 9 FEET
 JW0412'LOWER THAN THE TRACK.  A CORPS OF ENGINEERS, U.S. ARMY, STANDARD
 JW0412'DISK, STAMPED 594 USED.
 JW0412
 JW0412                          STATION RECOVERY (1935)
 JW0412
 JW0412'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JW0412'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0301 ***********************************************************************
 JW0301  DESIGNATION -  598
 JW0301  PID         -  JW0301
 JW0301  STATE/COUNTY-  MD/ALLEGANY
 JW0301  COUNTRY     -  US
 JW0301  USGS QUAD   -  KEYSER (2016)
 JW0301
 JW0301                         *CURRENT SURVEY CONTROL
 JW0301  ______________________________________________________________________
 JW0301* NAD 83(1986) POSITION- 39 29 49.     (N) 078 55 18.     (W)   SCALED
 JW0301* NAVD 88 ORTHO HEIGHT -   226.948 (meters)      744.58  (feet) ADJUSTED
 JW0301  ______________________________________________________________________
 JW0301  GEOID HEIGHT    -        -32.393 (meters)                     GEOID18
 JW0301  DYNAMIC HEIGHT  -        226.807 (meters)      744.12  (feet) COMP
 JW0301  MODELED GRAVITY -    979,998.8   (mgal)                       NAVD 88
 JW0301
 JW0301  VERT ORDER      -  SECOND    CLASS 0
 JW0301
 JW0301.The horizontal coordinates were scaled from a map and have
 JW0301.an estimated accuracy of +/- 6 seconds.
 JW0301
 JW0301.The orthometric height was determined by differential leveling and
 JW0301.adjusted by the NATIONAL GEODETIC SURVEY
 JW0301.in June 1991.
 JW0301
 JW0301.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0301.GEOID18 height accuracy estimate available here.
 JW0301
 JW0301.Click photographs - Photos may exist for this station.
 JW0301
 JW0301.The dynamic height is computed by dividing the NAVD 88
 JW0301.geopotential number by the normal gravity value computed on the
 JW0301.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0301.degrees latitude (g = 980.6199 gals.).
 JW0301
 JW0301.The modeled gravity was interpolated from observed gravity values.
 JW0301
 JW0301;                    North         East    Units  Estimated Accuracy
 JW0301;SPC MD       -   204,920.      234,710.      MT  (+/- 180 meters Scaled)
 JW0301
 JW0301_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD787739(NAD 83)
 JW0301
 JW0301                          SUPERSEDED SURVEY CONTROL
 JW0301
 JW0301  NGVD 29 (??/??/92)  227.133  (m)          745.19   (f) ADJ UNCH    2 0
 JW0301
 JW0301.Superseded values are not recommended for survey control.
 JW0301
 JW0301.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0301.See file dsdata.pdf to determine how the superseded data were derived.
 JW0301
 JW0301_MARKER: DD = SURVEY DISK
 JW0301_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0301_SP_SET: BATTERY BOX
 JW0301_STAMPING: 598
 JW0301_MARK LOGO: USACE
 JW0301_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0301
 JW0301  HISTORY     - Date     Condition        Report By
 JW0301  HISTORY     - UNK      MONUMENTED       USACE
 JW0301  HISTORY     - 1935     GOOD             CGS
 JW0301  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0301
 JW0301                          STATION DESCRIPTION
 JW0301
 JW0301'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0301'6.4 MI NE FROM KEYSER.
 JW0301'IN ALLEGANY COUNTY, MARYLAND, 6.4 MILES NORTHEAST ALONG THE
 JW0301'BALTIMORE AND OHIO RAILROAD FROM THE STATION AT KEYSER, MINERAL
 JW0301'COUNTY, WEST VIRGINIA, 219 FEET SOUTH OF POLE 195/5, AT A
 JW0301'BATTERY BOX, IN THE SOUTH FACE OF THE SMALL CONCRETE BASE, 4
 JW0301'FEET ABOVE THE LEVEL OF THE GROUND, AND ABOUT 1 FOOT LOWER THAN
 JW0301'THE TRACK.  A CORPS OF ENGINEERS, U.S. ARMY, STANDARD DISK,
 JW0301'STAMPED 598 AND SET VERTICALLY.
 JW0301
 JW0301                          STATION RECOVERY (1983)
 JW0301
 JW0301'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0301'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7292 ***********************************************************************
 HV7292  DESIGNATION -  6
 HV7292  PID         -  HV7292
 HV7292  STATE/COUNTY-  MD/CALVERT
 HV7292  COUNTRY     -  US
 HV7292  USGS QUAD   -  NORTH BEACH (2016)
 HV7292
 HV7292                         *CURRENT SURVEY CONTROL
 HV7292  ______________________________________________________________________
 HV7292* NAD 83(1993) POSITION- 38 39 27.64168(N) 076 31 42.17936(W)   ADJUSTED
 HV7292* NAVD 88 ORTHO HEIGHT -    32.    (meters)      105.    (feet) SCALED
 HV7292  ______________________________________________________________________
 HV7292  GEOID HEIGHT    -        -33.767 (meters)                     GEOID18
 HV7292  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 HV7292  HORZ ORDER      -  THIRD
 HV7292
 HV7292.The horizontal coordinates were established by classical geodetic methods
 HV7292.and adjusted by the National Geodetic Survey in November 1994.
 HV7292
 HV7292.The orthometric height was scaled from a topographic map.
 HV7292
 HV7292.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7292.GEOID18 height accuracy estimate available here.
 HV7292
 HV7292.Click photographs - Photos may exist for this station.
 HV7292
 HV7292.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7292
 HV7292. The following values were computed from the NAD 83(1993) position.
 HV7292
 HV7292;                    North         East     Units Scale Factor Converg.
 HV7292;SPC MD       -   110,112.181   441,048.652   MT  0.99995706   +0 17 45.6
 HV7292;SPC MD       -   361,259.71  1,447,007.12   sFT  0.99995706   +0 17 45.6
 HV7292;UTM  18      - 4,279,898.003   367,015.783   MT  0.99981778   -0 57 17.5
 HV7292
 HV7292!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7292!SPC MD       -   1.00000032  x   0.99995706  =   0.99995738
 HV7292!UTM  18      -   1.00000032  x   0.99981778  =   0.99981810
 HV7292
 HV7292_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6701579898(NAD 83)
 HV7292
 HV7292                          SUPERSEDED SURVEY CONTROL
 HV7292
 HV7292  NAD 83(1991)-  38 39 27.64167(N)    076 31 42.17936(W) AD(       ) 3
 HV7292  NAD 83(1986)-  38 39 27.63939(N)    076 31 42.19304(W) AD(       ) 3
 HV7292  NAD 27      -  38 39 27.20000(N)    076 31 43.35300(W) AD(       ) 3
 HV7292
 HV7292.Superseded values are not recommended for survey control.
 HV7292
 HV7292.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7292.See file dsdata.pdf to determine how the superseded data were derived.
 HV7292
 HV7292_MARKER: DD = SURVEY DISK
 HV7292_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV7292_SP_SET: STEP
 HV7292_STAMPING: NO 6 1944
 HV7292_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7292
 HV7292  HISTORY     - Date     Condition        Report By
 HV7292  HISTORY     - 1944     MONUMENTED       CGS
 HV7292  HISTORY     - 1960     GOOD             CGS
 HV7292
 HV7292                          STATION DESCRIPTION
 HV7292
 HV7292'DESCRIBED BY COAST AND GEODETIC SURVEY 1944 (TBR)
 HV7292'STATION IS A BRONZE DISK STAMPED NO 6 1944.  IT IS ON SE CORNER
 HV7292'STEPS AT E ENTRANCE TO BUILDING 1 AT NAVAL RESEARCH LABORATORY,
 HV7292'CHESAPEAKE BEACH.
 HV7292'
 HV7292'HALF-TIDE LEVEL (APPROXIMATE SEA LEVEL) ELEVATION 115.44 FEET.
 HV7292
 HV7292                          STATION RECOVERY (1960)
 HV7292
 HV7292'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7292'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3603 ***********************************************************************
 JU3603  DESIGNATION -  6 2
 JU3603  PID         -  JU3603
 JU3603  STATE/COUNTY-  MD/CECIL
 JU3603  COUNTRY     -  US
 JU3603  USGS QUAD   -  EARLEVILLE (2016)
 JU3603
 JU3603                         *CURRENT SURVEY CONTROL
 JU3603  ______________________________________________________________________
 JU3603* NAD 83(1991) POSITION- 39 28 25.63197(N) 075 56 49.01998(W)   ADJUSTED
 JU3603* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3603  ______________________________________________________________________
 JU3603  GEOID HEIGHT    -        -33.352 (meters)                     GEOID18
 JU3603  LAPLACE CORR    -         -0.79  (seconds)                    DEFLEC18
 JU3603  HORZ ORDER      -  THIRD
 JU3603
 JU3603.The horizontal coordinates were established by classical geodetic methods
 JU3603.and adjusted by the National Geodetic Survey in January 1992.
 JU3603
 JU3603.The orthometric height was scaled from a topographic map.
 JU3603
 JU3603.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3603.GEOID18 height accuracy estimate available here.
 JU3603
 JU3603.Click photographs - Photos may exist for this station.
 JU3603
 JU3603.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3603
 JU3603. The following values were computed from the NAD 83(1991) position.
 JU3603
 JU3603;                    North         East     Units Scale Factor Converg.
 JU3603;SPC MD       -   201,127.171   490,608.821   MT  1.00000425   +0 39 39.3
 JU3603;SPC MD       -   659,864.73  1,609,605.77   sFT  1.00000425   +0 39 39.3
 JU3603;UTM  18      - 4,369,783.251   418,550.879   MT  0.99968168   -0 36 07.3
 JU3603
 JU3603!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3603!SPC MD       -   1.00000527  x   1.00000425  =   1.00000952
 JU3603!UTM  18      -   1.00000527  x   0.99968168  =   0.99968695
 JU3603
 JU3603:                Primary Azimuth Mark                     Grid Az
 JU3603:SPC MD       -  7 2                                      216 35 35.9
 JU3603:UTM  18      -  7 2                                      217 51 22.5
 JU3603
 JU3603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1855069783(NAD 83)
 JU3603
 JU3603|---------------------------------------------------------------------|
 JU3603| PID    Reference Object                     Distance      Geod. Az  |
 JU3603|                                                           dddmmss.s |
 JU3603| JU3575 7 2                                 APPROX. 1.2 KM 2171515.2 |
 JU3603|---------------------------------------------------------------------|
 JU3603
 JU3603                          SUPERSEDED SURVEY CONTROL
 JU3603
 JU3603  NAD 83(1986)-  39 28 25.62445(N)    075 56 49.02651(W) AD(       ) 3
 JU3603  NAD 27      -  39 28 25.22700(N)    075 56 50.23900(W) AD(       ) 3
 JU3603
 JU3603.Superseded values are not recommended for survey control.
 JU3603
 JU3603.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3603.See file dsdata.pdf to determine how the superseded data were derived.
 JU3603
 JU3603_MARKER: DD = SURVEY DISK
 JU3603_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3603_STAMPING: 6-2
 JU3603_MARK LOGO: USACE
 JU3603_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3603+STABILITY: SURFACE MOTION
 JU3603
 JU3603  HISTORY     - Date     Condition        Report By
 JU3603  HISTORY     - 1937     MONUMENTED       USACE
 JU3603  HISTORY     - 1938     GOOD             CGS
 JU3603
 JU3603                          STATION DESCRIPTION
 JU3603
 JU3603'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3603'LOCATED ON THE S SIDE OF ELK RIVER ON THE S SIDE OF THE MOUTH
 JU3603'OF THE BOHEMIA RIVER AND AT FORDS LANDING.  THE STATION IS
 JU3603'5.5 METERS OFFSHORE AND IS BARE AT LOW WATER.  IT IS 15.3
 JU3603'METERS SW FROM THE NW CORNER OF BOATHOUSE.  THE STATION IS
 JU3603'MARKED BY U.S.E.D. DISK SET ATOP 6-INCH SQUARE CONCRETE POST.
 JU3603
 JU3603                          STATION RECOVERY (1938)
 JU3603
 JU3603'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JU3603'STATION RECOVERED IN GOOD CONDITION.  IT IS
 JU3603'STAMPED 6-2.  THERE IS ANOTHER MARK (TOP OF METAL BOLT IN
 JU3603'SQUARE CONCRETE MONUMENT) ABOUT 5 FEET NW OF STATION.  THE
 JU3603'PRESENT DESCRIPTION IS ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0410 ***********************************************************************
 JW0410  DESIGNATION -  6 A
 JW0410  PID         -  JW0410
 JW0410  STATE/COUNTY-  MD/ALLEGANY
 JW0410  COUNTRY     -  US
 JW0410  USGS QUAD   -  CRESAPTOWN (2016)
 JW0410
 JW0410                         *CURRENT SURVEY CONTROL
 JW0410  ______________________________________________________________________
 JW0410* NAD 83(1986) POSITION- 39 36 14.     (N) 078 48 54.     (W)   SCALED
 JW0410* NAVD 88 ORTHO HEIGHT -   197.211 (meters)      647.02  (feet) POSTED
 JW0410  ______________________________________________________________________
 JW0410  GEOID HEIGHT    -        -32.619 (meters)                     GEOID18
 JW0410  DYNAMIC HEIGHT  -        197.10  (meters)      646.7   (feet) COMP
 JW0410  MODELED GRAVITY -    980,034.8   (mgal)                       NAVD 88
 JW0410
 JW0410  VERT ORDER      -  * POSTED, SEE BELOW
 JW0410
 JW0410.The horizontal coordinates were scaled from a map and have
 JW0410.an estimated accuracy of +/- 6 seconds.
 JW0410
 JW0410.The orthometric height was determined by differential leveling
 JW0410.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JW0410
 JW0410.* This is a POSTED BENCH MARK height.
 JW0410
 JW0410.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0410.GEOID18 height accuracy estimate available here.
 JW0410
 JW0410.Click photographs - Photos may exist for this station.
 JW0410
 JW0410.The dynamic height is computed by dividing the NAVD 88
 JW0410.geopotential number by the normal gravity value computed on the
 JW0410.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0410.degrees latitude (g = 980.6199 gals.).
 JW0410
 JW0410.The modeled gravity was interpolated from observed gravity values.
 JW0410
 JW0410;                    North         East    Units  Estimated Accuracy
 JW0410;SPC MD       -   216,600.      244,120.      MT  (+/- 180 meters Scaled)
 JW0410
 JW0410_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD875860(NAD 83)
 JW0410
 JW0410                          SUPERSEDED SURVEY CONTROL
 JW0410
 JW0410  NGVD 29 (??/??/92)  197.411  (m)          647.67   (f) ADJ UNCH    2 0
 JW0410
 JW0410.Superseded values are not recommended for survey control.
 JW0410
 JW0410.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0410.See file dsdata.pdf to determine how the superseded data were derived.
 JW0410
 JW0410_MARKER: R = RIVET
 JW0410_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0410_SP_SET: BRIDGE
 JW0410_STAMPING: 6 A
 JW0410_MARK LOGO: BORR
 JW0410_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0410
 JW0410  HISTORY     - Date     Condition        Report By
 JW0410  HISTORY     - UNK      MONUMENTED       BORR
 JW0410  HISTORY     - 1934     GOOD             CGS
 JW0410  HISTORY     - 1935     GOOD             CGS
 JW0410  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0410
 JW0410                          STATION DESCRIPTION
 JW0410
 JW0410'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JW0410'6.4 MI SW FROM CUMBERLAND.
 JW0410'6.4 MILES SOUTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JW0410'QUEEN CITY HOTEL AT CUMBERLAND, ALLEGANY COUNTY, 200 YARDS
 JW0410'SOUTHWEST OF SIGNAL POST 1845, 63 YARDS SOUTHWEST OF THE WATER
 JW0410'TANK AT THE CELANESE PLATN, AT A BRIDGE, IN THE TOP OF THE WEST
 JW0410'BRIDGE SEAT, 3 YARDS NORTHWEST OF THE CENTER LINE OF THE
 JW0410'SOUTH-BOUND TRACK, AND ABOUT 3 FEET LOWER THAN THE TRACK.  A
 JW0410'COPPER RIVET, STAMPED 6 A.
 JW0410
 JW0410                          STATION RECOVERY (1935)
 JW0410
 JW0410'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JW0410'RECOVERED IN GOOD CONDITION.
 JW0410
 JW0410                          STATION RECOVERY (1983)
 JW0410
 JW0410'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0410'SEARCHED FOR BUT NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2246 ***********************************************************************
 HU2246  DESIGNATION -  6 KEM
 HU2246  PID         -  HU2246
 HU2246  STATE/COUNTY-  MD/WICOMICO
 HU2246  COUNTRY     -  US
 HU2246  USGS QUAD   -  WETIPQUIN (2016)
 HU2246
 HU2246                         *CURRENT SURVEY CONTROL
 HU2246  ______________________________________________________________________
 HU2246* NAD 83(1986) POSITION- 38 21 11.2    (N) 075 46 06.5    (W)   HD_HELD2
 HU2246* NAVD 88 ORTHO HEIGHT -     2.395 (meters)        7.86  (feet) ADJUSTED
 HU2246  ______________________________________________________________________
 HU2246  GEOID HEIGHT    -        -35.718 (meters)                     GEOID18
 HU2246  DYNAMIC HEIGHT  -          2.394 (meters)        7.85  (feet) COMP
 HU2246  MODELED GRAVITY -    980,003.9   (mgal)                       NAVD 88
 HU2246
 HU2246  VERT ORDER      -  SECOND    CLASS I
 HU2246
 HU2246.The horizontal coordinates were established by autonomous hand held GPS
 HU2246.observations and have an estimated accuracy of +/- 10 meters.
 HU2246
 HU2246.The orthometric height was determined by differential leveling and
 HU2246.adjusted by the NATIONAL GEODETIC SURVEY
 HU2246.in June 1991.
 HU2246
 HU2246.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2246.GEOID18 height accuracy estimate available here.
 HU2246
 HU2246.Click photographs - Photos may exist for this station.
 HU2246
 HU2246.The dynamic height is computed by dividing the NAVD 88
 HU2246.geopotential number by the normal gravity value computed on the
 HU2246.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2246.degrees latitude (g = 980.6199 gals.).
 HU2246
 HU2246.The modeled gravity was interpolated from observed gravity values.
 HU2246
 HU2246;                    North         East    Units  Estimated Accuracy
 HU2246;SPC MD       -    76,924.      507,643.      MT  (+/- 10 meters HH2 GPS)
 HU2246
 HU2246_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3285445274(NAD 83)
 HU2246
 HU2246                          SUPERSEDED SURVEY CONTROL
 HU2246
 HU2246  NGVD 29 (06/12/91)    2.649  (m)            8.69   (f) ADJUSTED    2 1
 HU2246
 HU2246.Superseded values are not recommended for survey control.
 HU2246
 HU2246.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2246.See file dsdata.pdf to determine how the superseded data were derived.
 HU2246
 HU2246_MARKER: DB = BENCH MARK DISK
 HU2246_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU2246_SP_SET: HEADWALL
 HU2246_STAMPING: 6 KEM 1977
 HU2246_MARK LOGO: USGS
 HU2246_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2246_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2246+STABILITY: SURFACE MOTION
 HU2246_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2246+SATELLITE: SATELLITE OBSERVATIONS - May 15, 2019
 HU2246
 HU2246  HISTORY     - Date     Condition        Report By
 HU2246  HISTORY     - 1977     MONUMENTED       USGS
 HU2246  HISTORY     - 19900301 GOOD             NGS
 HU2246  HISTORY     - 20190515 GOOD             PROFLN
 HU2246
 HU2246                          STATION DESCRIPTION
 HU2246
 HU2246'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2246'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM ITS JUNCTION
 HU2246'WITH CHERRY WALK ROAD IN QUANTICO, THENCE 2.8 KM (1.74 MI) WESTERLY
 HU2246'ALONG STATE HIGHWAY 349, IN TOP OF AND 0.3 M (0.98 FT) WEST OF THE
 HU2246'EAST END OF THE SOUTH CONCRETE HEADWALL OF A BOX CULVERT AT GUM MILL
 HU2246'CREEK, 6.6 M (21.65 FT) SOUTH OF THE HIGHWAY CENTERLINE, AND 0.2 M
 HU2246'(0.66 FT) ABOVE THE LEVEL OF THE HIGHWAY.
 HU2246
 HU2246                          STATION RECOVERY (2019)
 HU2246
 HU2246'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2246'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1195 ***********************************************************************
 JV1195  DESIGNATION -  6 PRR
 JV1195  PID         -  JV1195
 JV1195  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1195  COUNTRY     -  US
 JV1195  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1195
 JV1195                         *CURRENT SURVEY CONTROL
 JV1195  ______________________________________________________________________
 JV1195* NAD 83(1986) POSITION- 39 21 37.     (N) 076 39 05.     (W)   SCALED
 JV1195* NAVD 88 ORTHO HEIGHT -    60.579 (meters)      198.75  (feet) ADJUSTED
 JV1195  ______________________________________________________________________
 JV1195  GEOID HEIGHT    -        -32.497 (meters)                     GEOID18
 JV1195  DYNAMIC HEIGHT  -         60.547 (meters)      198.64  (feet) COMP
 JV1195  MODELED GRAVITY -    980,101.2   (mgal)                       NAVD 88
 JV1195
 JV1195  VERT ORDER      -  SECOND    CLASS 0
 JV1195
 JV1195.The horizontal coordinates were scaled from a map and have
 JV1195.an estimated accuracy of +/- 6 seconds.
 JV1195
 JV1195.The orthometric height was determined by differential leveling and
 JV1195.adjusted by the NATIONAL GEODETIC SURVEY
 JV1195.in June 1991.
 JV1195
 JV1195.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1195.GEOID18 height accuracy estimate available here.
 JV1195
 JV1195.Click photographs - Photos may exist for this station.
 JV1195
 JV1195.The dynamic height is computed by dividing the NAVD 88
 JV1195.geopotential number by the normal gravity value computed on the
 JV1195.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1195.degrees latitude (g = 980.6199 gals.).
 JV1195
 JV1195.The modeled gravity was interpolated from observed gravity values.
 JV1195
 JV1195;                    North         East    Units  Estimated Accuracy
 JV1195;SPC MD       -   188,060.      430,050.      MT  (+/- 180 meters Scaled)
 JV1195
 JV1195_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ577580(NAD 83)
 JV1195
 JV1195                          SUPERSEDED SURVEY CONTROL
 JV1195
 JV1195  NGVD 29 (11/26/84)   60.808  (m)          199.50   (f) ADJUSTED    2 0
 JV1195
 JV1195.Superseded values are not recommended for survey control.
 JV1195
 JV1195.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1195.See file dsdata.pdf to determine how the superseded data were derived.
 JV1195
 JV1195_MARKER: Q = CHISELED SQUARE
 JV1195_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1195_SP_SET: VIADUCT
 JV1195_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1195
 JV1195  HISTORY     - Date     Condition        Report By
 JV1195  HISTORY     - UNK      MONUMENTED       PRR
 JV1195  HISTORY     - 1935     GOOD             CGS
 JV1195
 JV1195                          STATION DESCRIPTION
 JV1195
 JV1195'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1195'AT BALTIMORE.
 JV1195'AT BALTIMORE, ABOUT 500 FEET NORTH OF PENNSYLVANIA RAILROAD
 JV1195'SIGNAL 5.3, ON BELVEDERE AVENUE, ON THE TOP OF THE WEST ABUTMENT
 JV1195'OF A VIADUCT, AND 12 FEET WEST OF THE CENTERLINE OF THE TRACK.  A
 JV1195'CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0760 ***********************************************************************
 JV0760  DESIGNATION -  606
 JV0760  PID         -  JV0760
 JV0760  STATE/COUNTY-  MD/CARROLL
 JV0760  COUNTRY     -  US
 JV0760  USGS QUAD   -  FINKSBURG (2016)
 JV0760
 JV0760                         *CURRENT SURVEY CONTROL
 JV0760  ______________________________________________________________________
 JV0760* NAD 83(1986) POSITION- 39 27 33.0    (N) 076 55 52.6    (W)   HD_HELD2
 JV0760* NAVD 88 ORTHO HEIGHT -   184.409 (meters)      605.02  (feet) ADJUSTED
 JV0760  ______________________________________________________________________
 JV0760  GEOID HEIGHT    -        -32.016 (meters)                     GEOID18
 JV0760  DYNAMIC HEIGHT  -        184.314 (meters)      604.70  (feet) COMP
 JV0760  MODELED GRAVITY -    980,104.9   (mgal)                       NAVD 88
 JV0760
 JV0760  VERT ORDER      -  SECOND    CLASS II
 JV0760
 JV0760.The horizontal coordinates were established by autonomous hand held GPS
 JV0760.observations and have an estimated accuracy of +/- 10 meters.
 JV0760
 JV0760.The orthometric height was determined by differential leveling and
 JV0760.adjusted by the NATIONAL GEODETIC SURVEY
 JV0760.in June 1991.
 JV0760
 JV0760.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0760.GEOID18 height accuracy estimate available here.
 JV0760
 JV0760.Click photographs - Photos may exist for this station.
 JV0760
 JV0760.The dynamic height is computed by dividing the NAVD 88
 JV0760.geopotential number by the normal gravity value computed on the
 JV0760.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0760.degrees latitude (g = 980.6199 gals.).
 JV0760
 JV0760.The modeled gravity was interpolated from observed gravity values.
 JV0760
 JV0760;                    North         East    Units  Estimated Accuracy
 JV0760;SPC MD       -   198,984.      405,914.      MT  (+/- 10 meters HH2 GPS)
 JV0760
 JV0760_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3384769512(NAD 83)
 JV0760
 JV0760                          SUPERSEDED SURVEY CONTROL
 JV0760
 JV0760  NGVD 29 (11/26/84)  184.615  (m)          605.69   (f) ADJUSTED    2 0
 JV0760
 JV0760.Superseded values are not recommended for survey control.
 JV0760
 JV0760.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0760.See file dsdata.pdf to determine how the superseded data were derived.
 JV0760
 JV0760_MARKER: DD = SURVEY DISK
 JV0760_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0760_SP_SET: BUILDING
 JV0760_STAMPING: MARYLAND 606 BALTO
 JV0760_MARK LOGO: USGS
 JV0760_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0760_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0760+SATELLITE: SATELLITE OBSERVATIONS - June 16, 2015
 JV0760
 JV0760  HISTORY     - Date     Condition        Report By
 JV0760  HISTORY     - 1902     MONUMENTED       USGS
 JV0760  HISTORY     - 1961     GOOD             CGS
 JV0760  HISTORY     - 20080125 GOOD             MDSHA
 JV0760  HISTORY     - 20150616 GOOD             USPSQD
 JV0760
 JV0760                          STATION DESCRIPTION
 JV0760
 JV0760'DESCRIBED BY COAST AND GEODETIC SURVEY 1961
 JV0760'0.4 MI S FROM GAMBER.
 JV0760'0.4 MILE SOUTHEAST ALONG STATE HIGHWAY 32 FROM THE JUNCTION
 JV0760'OF THE ROAD LEADING TO FINKSBURG AT GAMBER, CARROLL COUNTY, AT
 JV0760'THE MT. PLEASANT METHODIST EPISCOPAL CHURCH, IN THE SOUTHEAST
 JV0760'WALL, 9 INCHES NORTHEAST OF THE SOUTHWEST CORNER OF THE BUILDING,
 JV0760'AND ABOUT 2 FEET ABOVE GROUND.  A UNITED STATES GEOLOGICAL
 JV0760'SURVEY STANDARD DISK, STAMPED MARYLAND 606 BALTO AND SET
 JV0760'VERTICALLY.
 JV0760
 JV0760                          STATION RECOVERY (2008)
 JV0760
 JV0760'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV0760'RECOVERED IN GOOD CONDITION.
 JV0760'
 JV0760'NOTE-THE CHURCH IS NOW THE FAITH FAMILY CHURCH.
 JV0760
 JV0760                          STATION RECOVERY (2015)
 JV0760
 JV0760'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0760'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8113 ***********************************************************************
 AI8113  DESIGNATION -  6116
 AI8113  PID         -  AI8113
 AI8113  STATE/COUNTY-  MD/C OF BALTIMORE
 AI8113  COUNTRY     -  US
 AI8113  USGS QUAD   -  BALTIMORE WEST (2016)
 AI8113
 AI8113                         *CURRENT SURVEY CONTROL
 AI8113  ______________________________________________________________________
 AI8113* NAD 83(2011) POSITION- 39 21 50.98632(N) 076 42 07.76177(W)   ADJUSTED
 AI8113* NAD 83(2011) ELLIP HT-   101.191 (meters)        (06/27/12)   ADJUSTED
 AI8113* NAD 83(2011) EPOCH   -  2010.00
 AI8113* NAVD 88 ORTHO HEIGHT -   133.5   (meters)      438.    (feet) GPS OBS
 AI8113  ______________________________________________________________________
 AI8113  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8113  GEOID HEIGHT    -        -32.338 (meters)                     GEOID99
 AI8113  GEOID HEIGHT    -        -32.343 (meters)                     GEOID18
 AI8113  NAD 83(2011) X  -  1,135,773.282 (meters)                     COMP
 AI8113  NAD 83(2011) Y  - -4,805,466.800 (meters)                     COMP
 AI8113  NAD 83(2011) Z  -  4,023,719.356 (meters)                     COMP
 AI8113  LAPLACE CORR    -         -5.32  (seconds)                    DEFLEC18
 AI8113
 AI8113  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8113  Standards:
 AI8113         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8113            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8113  -------------------------------------------------------------------
 AI8113  NETWORK    0.76   1.12           0.34   0.27   0.57     -0.02813950
 AI8113  -------------------------------------------------------------------
 AI8113  Click here for local accuracies and other accuracy information.
 AI8113
 AI8113.The horizontal coordinates were established by GPS observations
 AI8113.and adjusted by the National Geodetic Survey in June 2012.
 AI8113
 AI8113.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8113.been affixed to the stable North American tectonic plate. See 
 AI8113.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8113
 AI8113.The horizontal coordinates are valid at the epoch date displayed above
 AI8113.which is a decimal equivalence of Year/Month/Day.
 AI8113
 AI8113.The orthometric height was determined by GPS observations and a
 AI8113.high-resolution geoid model.
 AI8113
 AI8113.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8113.GEOID18 height accuracy estimate available here.
 AI8113
 AI8113.Click photographs - Photos may exist for this station.
 AI8113
 AI8113.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8113
 AI8113.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8113
 AI8113.The ellipsoidal height was determined by GPS observations
 AI8113.and is referenced to NAD 83.
 AI8113
 AI8113. The following values were computed from the NAD 83(2011) position.
 AI8113
 AI8113;                    North         East     Units Scale Factor Converg.
 AI8113;SPC MD       -   188,475.680   425,667.970   MT  0.99998611   +0 11 13.0
 AI8113;SPC MD       -   618,357.29  1,396,545.66   sFT  0.99998611   +0 11 13.0
 AI8113;UTM  18      - 4,358,571.125   353,361.575   MT  0.99986476   -1 04 47.2
 AI8113
 AI8113!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8113!SPC MD       -   0.99998412  x   0.99998611  =   0.99997023
 AI8113!UTM  18      -   0.99998412  x   0.99986476  =   0.99984889
 AI8113
 AI8113_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5336158571(NAD 83)
 AI8113
 AI8113                          SUPERSEDED SURVEY CONTROL
 AI8113
 AI8113  NAD 83(2007)-  39 21 50.98651(N)    076 42 07.76253(W) AD(2002.00) 0
 AI8113  ELLIP H (02/10/07)  101.208  (m)                       GP(2002.00)    
 AI8113  ELLIP H (08/30/02)  101.214  (m)                       GP(       ) 4 2
 AI8113  NAD 83(1991)-  39 21 50.98691(N)    076 42 07.76243(W) AD(       ) 1
 AI8113  ELLIP H (10/26/00)  101.175  (m)                       GP(       ) 4 1
 AI8113
 AI8113.Superseded values are not recommended for survey control.
 AI8113
 AI8113.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8113.See file dsdata.pdf to determine how the superseded data were derived.
 AI8113
 AI8113_MARKER: Z = SEE DESCRIPTION
 AI8113_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AI8113_SP_SET: SIDEWALK
 AI8113_MARK LOGO: MD0050
 AI8113_MAGNETIC: N = NO MAGNETIC MATERIAL
 AI8113_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI8113_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8113+SATELLITE: SATELLITE OBSERVATIONS - April 27, 2020
 AI8113
 AI8113  HISTORY     - Date     Condition        Report By
 AI8113  HISTORY     - 1999     MONUMENTED       MD0050
 AI8113  HISTORY     - 20200427 GOOD             MD-005
 AI8113
 AI8113                          STATION DESCRIPTION
 AI8113
 AI8113'DESCRIBED BY CITY OF BALTIMORE MARYLAND 1999
 AI8113'THE STATION IS LOCATED 6.88 MILES (11.07 KM) N.W.  OF THE INNER HARBOR
 AI8113'OF BALTIMORE CITY.  THE POINT IS A LEAD PLUG IN CONCRETE WALK ON THE
 AI8113'S.W.  SIDE OF PARK HEIGHTS AVE.  APPROXIMATELY 300 FT.  (91.4 M) S.E.
 AI8113'OF FALLSTAFF ROAD.  IT IS 8.93 FT.  (2.72 M) N.W.  OF A GAS MANHOLE
 AI8113'LOCATED IN PARK HEIGHTS AVE., 1.45 FT.  (0.44 M) EAST OF THE BACK OF
 AI8113'WALK, 20.55 S.E.  OF LIGHT POLE NO.  29.
 AI8113
 AI8113                          STATION RECOVERY (2020)
 AI8113
 AI8113'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (JMS)
 AI8113'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1192 ***********************************************************************
 JU1192  DESIGNATION -  62.02
 JU1192  PID         -  JU1192
 JU1192  STATE/COUNTY-  MD/KENT
 JU1192  COUNTRY     -  US
 JU1192  USGS QUAD   -  MILLINGTON (2016)
 JU1192
 JU1192                         *CURRENT SURVEY CONTROL
 JU1192  ______________________________________________________________________
 JU1192* NAD 83(1986) POSITION- 39 17 05.     (N) 075 49 41.     (W)   SCALED
 JU1192* NAVD 88 ORTHO HEIGHT -    18.77  (+/-2cm)       61.6   (feet) VERTCON3
 JU1192  ______________________________________________________________________
 JU1192  GEOID HEIGHT    -        -33.636 (meters)                     GEOID18
 JU1192  VERT ORDER      -  ? (See Below)
 JU1192
 JU1192.The horizontal coordinates were scaled from a map and have
 JU1192.an estimated accuracy of +/- 6 seconds.
 JU1192
 JU1192.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU1192.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU1192
 JU1192.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1192.GEOID18 height accuracy estimate available here.
 JU1192
 JU1192.The vertical order pertains to the NGVD 29 superseded value.
 JU1192
 JU1192.Click photographs - Photos may exist for this station.
 JU1192
 JU1192;                    North         East    Units  Estimated Accuracy
 JU1192;SPC MD       -   180,260.      501,110.      MT  (+/- 180 meters Scaled)
 JU1192
 JU1192_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ285487(NAD 83)
 JU1192
 JU1192                          SUPERSEDED SURVEY CONTROL
 JU1192
 JU1192  NGVD 29 (??/??/92)   19.008  (m)           62.36   (f) ADJ UNCH       
 JU1192
 JU1192.Superseded values are not recommended for survey control.
 JU1192
 JU1192.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1192.See file dsdata.pdf to determine how the superseded data were derived.
 JU1192
 JU1192_MARKER: DD = SURVEY DISK
 JU1192_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JU1192_SP_SET: MILEPOST
 JU1192_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU1192
 JU1192  HISTORY     - Date     Condition        Report By
 JU1192  HISTORY     - UNK      MONUMENTED       PRR
 JU1192  HISTORY     - 1964     GOOD             CGS
 JU1192  HISTORY     - 1980     GOOD             LOCSUR
 JU1192
 JU1192                          STATION DESCRIPTION
 JU1192
 JU1192'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1192'2 MI N FROM MILLINGTON.
 JU1192'2.0 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JU1192'STATION AT MILLINGTON, AND AT MILEPOST 11, THE TOP OF THE MILEPOST.
 JU1192
 JU1192                          STATION RECOVERY (1980)
 JU1192
 JU1192'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1980
 JU1192'POST IS STEEL LOCATED ABOUT 10 FT. WEST OF WEST RAIL , AT A POINT
 JU1192'APPROX. 0.25 MI SOUTH ALONG TRACK FROM CROSSING WITH WALNUT TREE TREE
 JU1192'RD., NORTH OF MILLING OVERGROWN WITH BRUSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1793 ***********************************************************************
 HV1793  DESIGNATION -  629 WSSC
 HV1793  PID         -  HV1793
 HV1793  STATE/COUNTY-  MD/MONTGOMERY
 HV1793  COUNTRY     -  US
 HV1793  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1793
 HV1793                         *CURRENT SURVEY CONTROL
 HV1793  ______________________________________________________________________
 HV1793* NAD 83(1986) POSITION- 38 59 52.     (N) 077 03 58.     (W)   SCALED
 HV1793* NAVD 88 ORTHO HEIGHT -    71.932 (meters)      236.00  (feet) ADJUSTED
 HV1793  ______________________________________________________________________
 HV1793  GEOID HEIGHT    -        -31.914 (meters)                     GEOID18
 HV1793  DYNAMIC HEIGHT  -         71.893 (meters)      235.87  (feet) COMP
 HV1793  MODELED GRAVITY -    980,086.5   (mgal)                       NAVD 88
 HV1793
 HV1793  VERT ORDER      -  FIRST     CLASS II
 HV1793
 HV1793.The horizontal coordinates were scaled from a map and have
 HV1793.an estimated accuracy of +/- 6 seconds.
 HV1793
 HV1793.The orthometric height was determined by differential leveling and
 HV1793.adjusted by the NATIONAL GEODETIC SURVEY
 HV1793.in June 1991.
 HV1793
 HV1793.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1793.GEOID18 height accuracy estimate available here.
 HV1793
 HV1793.Click photographs - Photos may exist for this station.
 HV1793
 HV1793.The dynamic height is computed by dividing the NAVD 88
 HV1793.geopotential number by the normal gravity value computed on the
 HV1793.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1793.degrees latitude (g = 980.6199 gals.).
 HV1793
 HV1793.The modeled gravity was interpolated from observed gravity values.
 HV1793
 HV1793;                    North         East    Units  Estimated Accuracy
 HV1793;SPC MD       -   147,760.      394,270.      MT  (+/- 180 meters Scaled)
 HV1793
 HV1793_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ210185(NAD 83)
 HV1793
 HV1793                          SUPERSEDED SURVEY CONTROL
 HV1793
 HV1793  NGVD 29 (11/26/84)   72.145  (m)          236.70   (f) ADJUSTED    1 2
 HV1793
 HV1793.Superseded values are not recommended for survey control.
 HV1793
 HV1793.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1793.See file dsdata.pdf to determine how the superseded data were derived.
 HV1793
 HV1793_MARKER: B = BOLT
 HV1793_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1793_SP_SET: CULVERT
 HV1793_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1793
 HV1793  HISTORY     - Date     Condition        Report By
 HV1793  HISTORY     - UNK      MONUMENTED       WSSC
 HV1793  HISTORY     - 1933     GOOD             CGS
 HV1793  HISTORY     - 1933     GOOD             CGS
 HV1793  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV1793
 HV1793                          STATION DESCRIPTION
 HV1793
 HV1793'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1793'0.6 MI NE FROM CHEVY CHASE LAKE.
 HV1793'0.6 MILE NORTHEAST ALONG THE GEORGETOWN BRANCH OF THE BALTIMORE
 HV1793'AND OHIO RAILROAD FROM THE CONNECTICUT AVENUE CROSSING
 HV1793'AT CHEVY CHASE LAKE, MONTGOMERY COUNTY, 850 FEET WEST OF THE
 HV1793'RAILROAD TRESTLE OVER ROCK CREEK, AT THE CROSSING OF JONES MILL
 HV1793'ROAD, 150 FEET NORTH OF THE CENTERLINE OF THE TRACK, AT A CONCRETE
 HV1793'CULVERT UNDER THE ROAD, IN THE CENTER OF THE TOP OF THE EAST
 HV1793'CONCRETE HEADWALL, 10 FEET EAST OF THE CENTERLINE OF THE ROAD,
 HV1793'AND ABOUT 2 INCHES ABOVE THE LEVEL OF THE ROAD.  A WASHINGTON
 HV1793'SUBURBAN SANITARY DISTRICT STANDARD COPPER BOLT AND WASHER.
 HV1793
 HV1793                          STATION RECOVERY (1933)
 HV1793
 HV1793'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933
 HV1793'RECOVERED IN GOOD CONDITION.
 HV1793
 HV1793                          STATION RECOVERY (2000)
 HV1793
 HV1793'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV1793'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2792 ***********************************************************************
 JV2792  DESIGNATION -  633
 JV2792  PID         -  JV2792
 JV2792  STATE/COUNTY-  MD/MONTGOMERY
 JV2792  COUNTRY     -  US
 JV2792  USGS QUAD   -  ROCKVILLE (2016)
 JV2792
 JV2792                         *CURRENT SURVEY CONTROL
 JV2792  ______________________________________________________________________
 JV2792* NAD 83(1986) POSITION- 39 00 03.     (N) 077 14 52.     (W)   SCALED
 JV2792* NAVD 88 ORTHO HEIGHT -    47.93  (+/-2cm)      157.3   (feet) VERTCON3
 JV2792  ______________________________________________________________________
 JV2792  GEOID HEIGHT    -        -31.722 (meters)                     GEOID18
 JV2792  VERT ORDER      -  SECOND    CLASS I (See Below)
 JV2792
 JV2792.The horizontal coordinates were scaled from a map and have
 JV2792.an estimated accuracy of +/- 6 seconds.
 JV2792
 JV2792.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2792.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2792
 JV2792.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2792.GEOID18 height accuracy estimate available here.
 JV2792
 JV2792.The vertical order pertains to the NGVD 29 superseded value.
 JV2792
 JV2792.Click photographs - Photos may exist for this station.
 JV2792
 JV2792;                    North         East    Units  Estimated Accuracy
 JV2792;SPC MD       -   148,130.      378,540.      MT  (+/- 180 meters Scaled)
 JV2792
 JV2792_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ053192(NAD 83)
 JV2792
 JV2792                          SUPERSEDED SURVEY CONTROL
 JV2792
 JV2792  NGVD 29 (11/26/84)   48.162  (m)          158.01   (f) ADJUSTED    2 1
 JV2792
 JV2792.Superseded values are not recommended for survey control.
 JV2792
 JV2792.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2792.See file dsdata.pdf to determine how the superseded data were derived.
 JV2792
 JV2792_MARKER: DD = SURVEY DISK
 JV2792_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2792_SP_SET: SLAB
 JV2792_STAMPING: 633
 JV2792_MARK LOGO: USACE
 JV2792_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2792
 JV2792  HISTORY     - Date     Condition        Report By
 JV2792  HISTORY     - UNK      MONUMENTED       USACE
 JV2792  HISTORY     - 1930     GOOD             CGS
 JV2792
 JV2792                          STATION DESCRIPTION
 JV2792
 JV2792'DESCRIBED BY COAST AND GEODETIC SURVEY 1930
 JV2792'AT GREAT FALLS.
 JV2792'AT GREAT FALLS, MONTGOMERY COUNTY, AT THE CONCRETE INTAKE
 JV2792'STRUCTURE OF THE WASHINGTON AQUEDUCT, AND IN THE SOUTHEAST CORNER
 JV2792'OF THE LOWER SLAB.  A CORPS OF ENGINEERS, U.S. ARMY, STANDARD
 JV2792'DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2081 ***********************************************************************
 HV2081  DESIGNATION -  634
 HV2081  PID         -  HV2081
 HV2081  STATE/COUNTY-  MD/MONTGOMERY
 HV2081  COUNTRY     -  US
 HV2081  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2081
 HV2081                         *CURRENT SURVEY CONTROL
 HV2081  ______________________________________________________________________
 HV2081* NAD 83(1986) POSITION- 38 56 41.     (N) 077 06 57.     (W)   SCALED
 HV2081* NAVD 88 ORTHO HEIGHT -    46.41  (+/-2cm)      152.3   (feet) VERTCON3
 HV2081  ______________________________________________________________________
 HV2081  GEOID HEIGHT    -        -31.901 (meters)                     GEOID18
 HV2081  VERT ORDER      -  FIRST     CLASS II (See Below)
 HV2081
 HV2081.The horizontal coordinates were scaled from a map and have
 HV2081.an estimated accuracy of +/- 6 seconds.
 HV2081
 HV2081.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2081.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2081
 HV2081.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2081.GEOID18 height accuracy estimate available here.
 HV2081
 HV2081.The vertical order pertains to the NGVD 29 superseded value.
 HV2081
 HV2081.Click photographs - Photos may exist for this station.
 HV2081
 HV2081;                    North         East    Units  Estimated Accuracy
 HV2081;SPC MD       -   141,880.      389,960.      MT  (+/- 180 meters Scaled)
 HV2081
 HV2081_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ166127(NAD 83)
 HV2081
 HV2081                          SUPERSEDED SURVEY CONTROL
 HV2081
 HV2081  NGVD 29 (11/26/84)   46.627  (m)          152.98   (f) ADJUSTED    1 2
 HV2081
 HV2081.Superseded values are not recommended for survey control.
 HV2081
 HV2081.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2081.See file dsdata.pdf to determine how the superseded data were derived.
 HV2081
 HV2081_MARKER: DD = SURVEY DISK
 HV2081_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV2081_SP_SET: OVERFLOW STRUCTURE
 HV2081_STAMPING: 634
 HV2081_MARK LOGO: USACE
 HV2081_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2081
 HV2081  HISTORY     - Date     Condition        Report By
 HV2081  HISTORY     - UNK      MONUMENTED       USACE
 HV2081  HISTORY     - 1930     GOOD             PBPP
 HV2081
 HV2081                          STATION DESCRIPTION
 HV2081
 HV2081'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2081'0.4 MI NW FROM DALECARLIA.
 HV2081'IN MONTGOMERY COUNTY, MARYLAND, 0.4 MILE NORTHWEST OF THE DISTRICT
 HV2081'OF COLUMBIA-MARYLAND LINE AT DALECARLIA, D.C., 0.3 MILE NORTHWEST
 HV2081'ALONG A SIDE ROAD FROM ITS JUNCTION WITH MAC ARTHUR BOULEVARD,
 HV2081'AT THE HEAD END OF DALECARLIA RESERVOIR, AND IN THE SOUTHEAST
 HV2081'CORNER OF A CONCRETE OVERFLOW STRUCTURE.  A CORPS OF ENGINEERS,
 HV2081'U.S. ARMY, STANDARD DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0408 ***********************************************************************
 JW0408  DESIGNATION -  634=CULVERT
 JW0408  PID         -  JW0408
 JW0408  STATE/COUNTY-  MD/ALLEGANY
 JW0408  COUNTRY     -  US
 JW0408  USGS QUAD   -  CUMBERLAND (2016)
 JW0408
 JW0408                         *CURRENT SURVEY CONTROL
 JW0408  ______________________________________________________________________
 JW0408* NAD 83(1986) POSITION- 39 38 17.     (N) 078 47 45.     (W)   SCALED
 JW0408* NAVD 88 ORTHO HEIGHT -   193.187 (meters)      633.81  (feet) ADJUSTED
 JW0408  ______________________________________________________________________
 JW0408  GEOID HEIGHT    -        -32.631 (meters)                     GEOID18
 JW0408  DYNAMIC HEIGHT  -        193.074 (meters)      633.44  (feet) COMP
 JW0408  MODELED GRAVITY -    980,038.0   (mgal)                       NAVD 88
 JW0408
 JW0408  VERT ORDER      -  SECOND    CLASS 0
 JW0408
 JW0408.The horizontal coordinates were scaled from a map and have
 JW0408.an estimated accuracy of +/- 6 seconds.
 JW0408
 JW0408.The orthometric height was determined by differential leveling and
 JW0408.adjusted by the NATIONAL GEODETIC SURVEY
 JW0408.in June 1991.
 JW0408
 JW0408.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0408.GEOID18 height accuracy estimate available here.
 JW0408
 JW0408.Click photographs - Photos may exist for this station.
 JW0408
 JW0408.The dynamic height is computed by dividing the NAVD 88
 JW0408.geopotential number by the normal gravity value computed on the
 JW0408.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0408.degrees latitude (g = 980.6199 gals.).
 JW0408
 JW0408.The modeled gravity was interpolated from observed gravity values.
 JW0408
 JW0408;                    North         East    Units  Estimated Accuracy
 JW0408;SPC MD       -   220,360.      245,840.      MT  (+/- 180 meters Scaled)
 JW0408
 JW0408_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD891899(NAD 83)
 JW0408
 JW0408                          SUPERSEDED SURVEY CONTROL
 JW0408
 JW0408  NGVD 29 (??/??/92)  193.385  (m)          634.46   (f) ADJ UNCH    2 0
 JW0408
 JW0408.Superseded values are not recommended for survey control.
 JW0408
 JW0408.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0408.See file dsdata.pdf to determine how the superseded data were derived.
 JW0408
 JW0408_MARKER: Q = CHISELED SQUARE
 JW0408_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0408_SP_SET: CULVERT
 JW0408_STAMPING: U S E D
 JW0408_MARK LOGO: USACE
 JW0408_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0408
 JW0408  HISTORY     - Date     Condition        Report By
 JW0408  HISTORY     - UNK      MONUMENTED       USACE
 JW0408  HISTORY     - 1934     GOOD             CGS
 JW0408  HISTORY     - 1935     GOOD             CGS
 JW0408
 JW0408                          STATION DESCRIPTION
 JW0408
 JW0408'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JW0408'AT CUMBERLAND.
 JW0408'3.2 MILES SOUTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JW0408'THE QUEEN CITY HOTEL AT CUMBERLAND, ALLEGANY COUNTY, 0.3 MILE
 JW0408'SOUTHWEST OF MILEPOST B 181-W 198, AT A CONCRETE CULVERT, ON THE
 JW0408'TOP OF THE HEADWALL, 3 YARDS NORTHEAST OF THE CENTER LINE OF THE
 JW0408'NORTH-BOUND TRACK, AND LEVEL WITH THE TRACK.  AN OUTLINED SQUARE,
 JW0408'MARKED U S E D
 JW0408
 JW0408                          STATION RECOVERY (1935)
 JW0408
 JW0408'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JW0408'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3242 ***********************************************************************
 JV3242  DESIGNATION -  636
 JV3242  PID         -  JV3242
 JV3242  STATE/COUNTY-  MD/WASHINGTON
 JV3242  COUNTRY     -  US
 JV3242  USGS QUAD   -  HAGERSTOWN (2016)
 JV3242
 JV3242                         *CURRENT SURVEY CONTROL
 JV3242  ______________________________________________________________________
 JV3242* NAD 83(1986) POSITION- 39 41 04.     (N) 077 44 23.     (W)   SCALED
 JV3242* NAVD 88 ORTHO HEIGHT -   193.741 (meters)      635.63  (feet) ADJUSTED
 JV3242  ______________________________________________________________________
 JV3242  GEOID HEIGHT    -        -34.246 (meters)                     GEOID18
 JV3242  DYNAMIC HEIGHT  -        193.627 (meters)      635.26  (feet) COMP
 JV3242  MODELED GRAVITY -    980,033.8   (mgal)                       NAVD 88
 JV3242
 JV3242  VERT ORDER      -  FIRST     CLASS II
 JV3242
 JV3242.The horizontal coordinates were scaled from a map and have
 JV3242.an estimated accuracy of +/- 6 seconds.
 JV3242
 JV3242.The orthometric height was determined by differential leveling and
 JV3242.adjusted by the NATIONAL GEODETIC SURVEY
 JV3242.in June 1991.
 JV3242
 JV3242.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3242.GEOID18 height accuracy estimate available here.
 JV3242
 JV3242.Click photographs - Photos may exist for this station.
 JV3242
 JV3242.The dynamic height is computed by dividing the NAVD 88
 JV3242.geopotential number by the normal gravity value computed on the
 JV3242.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3242.degrees latitude (g = 980.6199 gals.).
 JV3242
 JV3242.The modeled gravity was interpolated from observed gravity values.
 JV3242
 JV3242;                    North         East    Units  Estimated Accuracy
 JV3242;SPC MD       -   224,250.      336,540.      MT  (+/- 180 meters Scaled)
 JV3242
 JV3242_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ650963(NAD 83)
 JV3242
 JV3242                          SUPERSEDED SURVEY CONTROL
 JV3242
 JV3242  NGVD 29 (11/26/84)  193.936  (m)          636.27   (f) ADJUSTED    1 2
 JV3242
 JV3242.Superseded values are not recommended for survey control.
 JV3242
 JV3242.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3242.See file dsdata.pdf to determine how the superseded data were derived.
 JV3242
 JV3242_MARKER: DB = BENCH MARK DISK
 JV3242_SETTING: 65 = SET IN UNSPECIFIED ROCK OR BOULDER
 JV3242_SP_SET: UNSPECIFIED ROCK
 JV3242_STAMPING: 636
 JV3242_MARK LOGO: USGS
 JV3242_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3242
 JV3242  HISTORY     - Date     Condition        Report By
 JV3242  HISTORY     - 1908     MONUMENTED       USGS
 JV3242  HISTORY     - 1942     MARK NOT FOUND   CGS
 JV3242
 JV3242                          STATION DESCRIPTION
 JV3242
 JV3242'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3242'3.1 MI N FROM HAGERSTOWN.
 JV3242'3.1 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE PASSENGER
 JV3242'STATION AT HAGERSTOWN, WASHINGTON COUNTY, 0.6 MILE SOUTH OF
 JV3242'MAUGANSVILLE, 212 FEET SOUTH OF MILEPOST 71, 10.6 FEET WEST OF THE
 JV3242'TRACK, AND IN THE TOP OF A ROCK.  A UNITED STATES GEOLOGICAL
 JV3242'SURVEY STANDARD DISK, STAMPED 636.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3440 ***********************************************************************
 JV3440  DESIGNATION -  636 MD
 JV3440  PID         -  JV3440
 JV3440  STATE/COUNTY-  MD/WASHINGTON
 JV3440  COUNTRY     -  US
 JV3440  USGS QUAD   -  HAGERSTOWN (2016)
 JV3440
 JV3440                         *CURRENT SURVEY CONTROL
 JV3440  ______________________________________________________________________
 JV3440* NAD 83(1986) POSITION- 39 38 36.     (N) 077 37 58.     (W)   SCALED
 JV3440* NAVD 88 ORTHO HEIGHT -   193.566 (meters)      635.06  (feet) ADJUSTED
 JV3440  ______________________________________________________________________
 JV3440  GEOID HEIGHT    -        -33.904 (meters)                     GEOID18
 JV3440  DYNAMIC HEIGHT  -        193.454 (meters)      634.69  (feet) COMP
 JV3440  MODELED GRAVITY -    980,042.6   (mgal)                       NAVD 88
 JV3440
 JV3440  VERT ORDER      -  SECOND    CLASS 0
 JV3440
 JV3440.The horizontal coordinates were scaled from a map and have
 JV3440.an estimated accuracy of +/- 6 seconds.
 JV3440
 JV3440.The orthometric height was determined by differential leveling and
 JV3440.adjusted by the NATIONAL GEODETIC SURVEY
 JV3440.in June 1991.
 JV3440
 JV3440.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3440.GEOID18 height accuracy estimate available here.
 JV3440
 JV3440.Click photographs - Photos may exist for this station.
 JV3440
 JV3440.The dynamic height is computed by dividing the NAVD 88
 JV3440.geopotential number by the normal gravity value computed on the
 JV3440.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3440.degrees latitude (g = 980.6199 gals.).
 JV3440
 JV3440.The modeled gravity was interpolated from observed gravity values.
 JV3440
 JV3440;                    North         East    Units  Estimated Accuracy
 JV3440;SPC MD       -   219,620.      345,680.      MT  (+/- 180 meters Scaled)
 JV3440
 JV3440_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ740914(NAD 83)
 JV3440
 JV3440                          SUPERSEDED SURVEY CONTROL
 JV3440
 JV3440  NGVD 29 (11/26/84)  193.749  (m)          635.66   (f) ADJUSTED    2 0
 JV3440
 JV3440.Superseded values are not recommended for survey control.
 JV3440
 JV3440.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3440.See file dsdata.pdf to determine how the superseded data were derived.
 JV3440
 JV3440_MARKER: DB = BENCH MARK DISK
 JV3440_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3440_SP_SET: BUILDING
 JV3440_STAMPING: 636 MD
 JV3440_MARK LOGO: USGS
 JV3440_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3440
 JV3440  HISTORY     - Date     Condition        Report By
 JV3440  HISTORY     - 1908     MONUMENTED       USGS
 JV3440  HISTORY     - 1942     GOOD             CGS
 JV3440  HISTORY     - 20080325 GOOD             GEOCAC
 JV3440
 JV3440                          STATION DESCRIPTION
 JV3440
 JV3440'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3440'AT CHEWSVILLE.
 JV3440'AT CHEWSVILLE, WASHINGTON COUNTY, AT THE WESTERN MARYLAND
 JV3440'RAILWAY STATION, IN THE NORTH FACE OF THE WEST END, ABOUT 210
 JV3440'FEET WEST OF BLOCK SIGNAL A 813, AND 39 FEET SOUTH OF THE CENTER
 JV3440'LINE OF THE MAIN TRACK.  A UNITED STATES GEOLOGICAL SURVEY
 JV3440'STANDARD DISK, STAMPED 636 MD AND SET VERTICALLY.
 JV3440
 JV3440                          STATION RECOVERY (2008)
 JV3440
 JV3440'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3440'THE RR STATION HAS BEEN OUT OF SERVICE FOR MANY YEARS.  IT APPEARS
 JV3440'THAT REMODLING FOR PRIVATE RESIDENCE IS IN PROGRESS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2109 ***********************************************************************
 HV2109  DESIGNATION -  646 USE
 HV2109  PID         -  HV2109
 HV2109  STATE/COUNTY-  MD/MONTGOMERY
 HV2109  COUNTRY     -  US
 HV2109  USGS QUAD   -  FALLS CHURCH (2019)
 HV2109
 HV2109                         *CURRENT SURVEY CONTROL
 HV2109  ______________________________________________________________________
 HV2109* NAD 83(1986) POSITION- 38 58 57.     (N) 077 13 45.     (W)   SCALED
 HV2109* NAVD 88 ORTHO HEIGHT -    47.43  (+/-2cm)      155.6   (feet) VERTCON3
 HV2109  ______________________________________________________________________
 HV2109  GEOID HEIGHT    -        -31.741 (meters)                     GEOID18
 HV2109  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2109
 HV2109.The horizontal coordinates were scaled from a map and have
 HV2109.an estimated accuracy of +/- 6 seconds.
 HV2109
 HV2109.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2109.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2109
 HV2109.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2109.GEOID18 height accuracy estimate available here.
 HV2109
 HV2109.The vertical order pertains to the NGVD 29 superseded value.
 HV2109
 HV2109.Click photographs - Photos may exist for this station.
 HV2109
 HV2109;                    North         East    Units  Estimated Accuracy
 HV2109;SPC MD       -   146,090.      380,140.      MT  (+/- 180 meters Scaled)
 HV2109
 HV2109_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ069171(NAD 83)
 HV2109
 HV2109                          SUPERSEDED SURVEY CONTROL
 HV2109
 HV2109  NGVD 29 (11/26/84)   47.662  (m)          156.37   (f) ADJUSTED    2 1
 HV2109
 HV2109.Superseded values are not recommended for survey control.
 HV2109
 HV2109.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2109.See file dsdata.pdf to determine how the superseded data were derived.
 HV2109
 HV2109_MARKER: DD = SURVEY DISK
 HV2109_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2109_SP_SET: AQUEDUCT
 HV2109_STAMPING: STA 646
 HV2109_MARK LOGO: USACE
 HV2109_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2109
 HV2109  HISTORY     - Date     Condition        Report By
 HV2109  HISTORY     - UNK      MONUMENTED       USACE
 HV2109  HISTORY     - 1930     GOOD             PBPP
 HV2109  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2109
 HV2109                          STATION DESCRIPTION
 HV2109
 HV2109'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2109'1.7 MI SE FROM GREAT FALLS.
 HV2109'1.7 MILES SOUTHEAST ALONG A SERVICE ROAD ON THE TOP OF THE
 HV2109'WASHINGTON AQUEDUCT FROM GREAT FALLS, MONTGOMERY COUNTY, 0.2 MILE
 HV2109'WEST OF THE POINT WHERE THE AQUEDUCT JOINS MAC ARTHUR BOULEVARD,
 HV2109'AT A GATE CHAMBER ON THE AQUEDUCT, AND IN THE NORTHWEST CORNER
 HV2109'OF THE SOUTH HALF.  A CORPS OF ENGINEERS, U.S. ARMY, STANDARD
 HV2109'DISK, STAMPED STA 646.
 HV2109
 HV2109                          STATION RECOVERY (2000)
 HV2109
 HV2109'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2109'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0404 ***********************************************************************
 JW0404  DESIGNATION -  646.97
 JW0404  PID         -  JW0404
 JW0404  STATE/COUNTY-  MD/ALLEGANY
 JW0404  COUNTRY     -  US
 JW0404  USGS QUAD   -  CUMBERLAND (2016)
 JW0404
 JW0404                         *CURRENT SURVEY CONTROL
 JW0404  ______________________________________________________________________
 JW0404* NAD 83(1986) POSITION- 39 39 22.     (N) 078 45 57.     (W)   SCALED
 JW0404* NAVD 88 ORTHO HEIGHT -   196.919 (meters)      646.06  (feet) ADJUSTED
 JW0404  ______________________________________________________________________
 JW0404  GEOID HEIGHT    -        -32.700 (meters)                     GEOID18
 JW0404  DYNAMIC HEIGHT  -        196.805 (meters)      645.68  (feet) COMP
 JW0404  MODELED GRAVITY -    980,043.1   (mgal)                       NAVD 88
 JW0404
 JW0404  VERT ORDER      -  FIRST     CLASS II
 JW0404
 JW0404.The horizontal coordinates were scaled from a map and have
 JW0404.an estimated accuracy of +/- 6 seconds.
 JW0404
 JW0404.The orthometric height was determined by differential leveling and
 JW0404.adjusted by the NATIONAL GEODETIC SURVEY
 JW0404.in June 1991.
 JW0404
 JW0404.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0404.GEOID18 height accuracy estimate available here.
 JW0404
 JW0404.Click photographs - Photos may exist for this station.
 JW0404
 JW0404.The dynamic height is computed by dividing the NAVD 88
 JW0404.geopotential number by the normal gravity value computed on the
 JW0404.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0404.degrees latitude (g = 980.6199 gals.).
 JW0404
 JW0404.The modeled gravity was interpolated from observed gravity values.
 JW0404
 JW0404;                    North         East    Units  Estimated Accuracy
 JW0404;SPC MD       -   222,310.      248,460.      MT  (+/- 180 meters Scaled)
 JW0404
 JW0404_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD916919(NAD 83)
 JW0404
 JW0404                          SUPERSEDED SURVEY CONTROL
 JW0404
 JW0404  NGVD 29 (??/??/92)  197.114  (m)          646.70   (f) ADJ UNCH    1 2
 JW0404
 JW0404.Superseded values are not recommended for survey control.
 JW0404
 JW0404.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0404.See file dsdata.pdf to determine how the superseded data were derived.
 JW0404
 JW0404_MARKER: R = RIVET
 JW0404_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0404_SP_SET: OVERPASS
 JW0404_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0404
 JW0404  HISTORY     - Date     Condition        Report By
 JW0404  HISTORY     - UNK      MONUMENTED       BORR
 JW0404  HISTORY     - 1935     GOOD             CGS
 JW0404  HISTORY     - 1941     GOOD             CGS
 JW0404
 JW0404                          STATION DESCRIPTION
 JW0404
 JW0404'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0404'AT CUMBERLAND.
 JW0404'AT CUMBERLAND, ALLEGANY COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JW0404'AT THE CONCRETE OVERPASS OVER CENTRAL STREET, 156 FEET WEST OF THE
 JW0404'EAST END OF THE RETAINING WALL, 55 FEET NORTHEAST OF THE CENTER
 JW0404'LINE OF THE STREET, 35 FEET WEST OF A SIGNAL TOWER, 6.7 FEET
 JW0404'SOUTHEAST OF THE SOUTHEAST RAIL, AND 1.7 FEET NORTHWEST OF THE
 JW0404'SOUTHEAST EDGE OF THE WALL.  A COPPER RIVET.
 JW0404
 JW0404                          STATION RECOVERY (1941)
 JW0404
 JW0404'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941
 JW0404'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2093 ***********************************************************************
 HV2093  DESIGNATION -  647
 HV2093  PID         -  HV2093
 HV2093  STATE/COUNTY-  MD/MONTGOMERY
 HV2093  COUNTRY     -  US
 HV2093  USGS QUAD   -  FALLS CHURCH (2019)
 HV2093
 HV2093                         *CURRENT SURVEY CONTROL
 HV2093  ______________________________________________________________________
 HV2093* NAD 83(1986) POSITION- 38 58 33.     (N) 077 11 02.     (W)   SCALED
 HV2093* NAVD 88 ORTHO HEIGHT -    46.951 (meters)      154.04  (feet) ADJUSTED
 HV2093  ______________________________________________________________________
 HV2093  GEOID HEIGHT    -        -31.786 (meters)                     GEOID18
 HV2093  DYNAMIC HEIGHT  -         46.926 (meters)      153.96  (feet) COMP
 HV2093  MODELED GRAVITY -    980,097.1   (mgal)                       NAVD 88
 HV2093
 HV2093  VERT ORDER      -  SECOND    CLASS 0
 HV2093
 HV2093.The horizontal coordinates were scaled from a map and have
 HV2093.an estimated accuracy of +/- 6 seconds.
 HV2093
 HV2093.The orthometric height was determined by differential leveling and
 HV2093.adjusted by the NATIONAL GEODETIC SURVEY
 HV2093.in June 1991.
 HV2093
 HV2093.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2093.GEOID18 height accuracy estimate available here.
 HV2093
 HV2093.Click photographs - Photos may exist for this station.
 HV2093
 HV2093.The dynamic height is computed by dividing the NAVD 88
 HV2093.geopotential number by the normal gravity value computed on the
 HV2093.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2093.degrees latitude (g = 980.6199 gals.).
 HV2093
 HV2093.The modeled gravity was interpolated from observed gravity values.
 HV2093
 HV2093;                    North         East    Units  Estimated Accuracy
 HV2093;SPC MD       -   145,340.      384,070.      MT  (+/- 180 meters Scaled)
 HV2093
 HV2093_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ108163(NAD 83)
 HV2093
 HV2093                          SUPERSEDED SURVEY CONTROL
 HV2093
 HV2093  NGVD 29 (11/26/84)   47.180  (m)          154.79   (f) ADJUSTED    2 0
 HV2093
 HV2093.Superseded values are not recommended for survey control.
 HV2093
 HV2093.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2093.See file dsdata.pdf to determine how the superseded data were derived.
 HV2093
 HV2093_MARKER: DD = SURVEY DISK
 HV2093_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2093_SP_SET: AQUEDUCT
 HV2093_STAMPING: 647
 HV2093_MARK LOGO: USACE
 HV2093_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2093
 HV2093  HISTORY     - Date     Condition        Report By
 HV2093  HISTORY     - UNK      MONUMENTED       USACE
 HV2093  HISTORY     - 1930     GOOD             MDBCSM
 HV2093  HISTORY     - 1958     GOOD             CGS
 HV2093  HISTORY     - 20001106 GOOD             USPSQD
 HV2093
 HV2093                          STATION DESCRIPTION
 HV2093
 HV2093'DESCRIBED BY MD BUR SURV AND MAPS 1930
 HV2093'5.2 MI NW FROM DALECARLIA.
 HV2093'IN MONTGOMERY COUNTY, MARYLAND, 5.2 MILES NORTHWEST ALONG MAC ARTHUR
 HV2093'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2093'D.C., AT A CONCRETE GATE CHAMBER ON THE WASHINGTON AQUEDUCT, AND
 HV2093'IN THE TOP OF THE NORTHWEST CORNER OF THE SOUTH HALF.  A CORPS
 HV2093'OF ENGINEERS, U.S. ARMY, STANDARD DISK, STAMPED 647.
 HV2093
 HV2093                          STATION RECOVERY (1958)
 HV2093
 HV2093'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV2093'RECOVERED IN GOOD CONDITION.
 HV2093
 HV2093                          STATION RECOVERY (2000)
 HV2093
 HV2093'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2093'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1194 ***********************************************************************
 JU1194  DESIGNATION -  65
 JU1194  PID         -  JU1194
 JU1194  STATE/COUNTY-  MD/KENT
 JU1194  COUNTRY     -  US
 JU1194  USGS QUAD   -  MILLINGTON (2016)
 JU1194
 JU1194                         *CURRENT SURVEY CONTROL
 JU1194  ______________________________________________________________________
 JU1194* NAD 83(1986) POSITION- 39 18 34.     (N) 075 49 33.     (W)   SCALED
 JU1194* NAVD 88 ORTHO HEIGHT -    19.496 (meters)       63.96  (feet) ADJUSTED
 JU1194  ______________________________________________________________________
 JU1194  GEOID HEIGHT    -        -33.612 (meters)                     GEOID18
 JU1194  DYNAMIC HEIGHT  -         19.486 (meters)       63.93  (feet) COMP
 JU1194  MODELED GRAVITY -    980,110.4   (mgal)                       NAVD 88
 JU1194
 JU1194  VERT ORDER      -  SECOND    CLASS 0
 JU1194
 JU1194.The horizontal coordinates were scaled from a map and have
 JU1194.an estimated accuracy of +/- 6 seconds.
 JU1194
 JU1194.The orthometric height was determined by differential leveling and
 JU1194.adjusted by the NATIONAL GEODETIC SURVEY
 JU1194.in June 1991.
 JU1194
 JU1194.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1194.GEOID18 height accuracy estimate available here.
 JU1194
 JU1194.Click photographs - Photos may exist for this station.
 JU1194
 JU1194.The dynamic height is computed by dividing the NAVD 88
 JU1194.geopotential number by the normal gravity value computed on the
 JU1194.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1194.degrees latitude (g = 980.6199 gals.).
 JU1194
 JU1194.The modeled gravity was interpolated from observed gravity values.
 JU1194
 JU1194;                    North         East    Units  Estimated Accuracy
 JU1194;SPC MD       -   183,010.      501,260.      MT  (+/- 180 meters Scaled)
 JU1194
 JU1194_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ288514(NAD 83)
 JU1194
 JU1194                          SUPERSEDED SURVEY CONTROL
 JU1194
 JU1194  NGVD 29 (11/26/84)   19.736  (m)           64.75   (f) ADJUSTED    2 0
 JU1194
 JU1194.Superseded values are not recommended for survey control.
 JU1194
 JU1194.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1194.See file dsdata.pdf to determine how the superseded data were derived.
 JU1194
 JU1194_MARKER: DB = BENCH MARK DISK
 JU1194_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JU1194_SP_SET: FOUNDATION
 JU1194_STAMPING: 65
 JU1194_MARK LOGO: USGS
 JU1194_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1194
 JU1194  HISTORY     - Date     Condition        Report By
 JU1194  HISTORY     - 1896     MONUMENTED       USGS
 JU1194  HISTORY     - 1964     GOOD             CGS
 JU1194  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JU1194
 JU1194                          STATION DESCRIPTION
 JU1194
 JU1194'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1194'AT MASSEY.
 JU1194'IN THE FOUNDATION OF THE STORE BUILDING IN THE NORTHWEST ANGLE
 JU1194'OF THE MAIN CROSSROADS, IN THE EAST FACE OF THE FOUNDATION,
 JU1194'ABOUT 10 INCHES NORTH OF THE SOUTHEAST CORNER AND 3 INCHES BELOW
 JU1194'SURFACE OF THE GROUND.  A U.S. GEOLOGICAL SURVEY STANDARD
 JU1194'BRONZE DISK, STAMPED, 65, AND SET VERTICALLY.
 JU1194
 JU1194                          STATION RECOVERY (1990)
 JU1194
 JU1194'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1194'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2533 ***********************************************************************
 JV2533  DESIGNATION -  66 PRR
 JV2533  PID         -  JV2533
 JV2533  STATE/COUNTY-  MD/FREDERICK
 JV2533  COUNTRY     -  US
 JV2533  USGS QUAD   -  FREDERICK (2016)
 JV2533
 JV2533                         *CURRENT SURVEY CONTROL
 JV2533  ______________________________________________________________________
 JV2533* NAD 83(1986) POSITION- 39 25 34.     (N) 077 24 13.     (W)   SCALED
 JV2533* NAVD 88 ORTHO HEIGHT -    91.885 (meters)      301.46  (feet) ADJUSTED
 JV2533  ______________________________________________________________________
 JV2533  GEOID HEIGHT    -        -32.738 (meters)                     GEOID18
 JV2533  DYNAMIC HEIGHT  -         91.836 (meters)      301.30  (feet) COMP
 JV2533  MODELED GRAVITY -    980,090.8   (mgal)                       NAVD 88
 JV2533
 JV2533  VERT ORDER      -  SECOND    CLASS 0
 JV2533
 JV2533.The horizontal coordinates were scaled from a map and have
 JV2533.an estimated accuracy of +/- 6 seconds.
 JV2533
 JV2533.The orthometric height was determined by differential leveling and
 JV2533.adjusted by the NATIONAL GEODETIC SURVEY
 JV2533.in June 1991.
 JV2533
 JV2533.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2533.GEOID18 height accuracy estimate available here.
 JV2533
 JV2533.Click photographs - Photos may exist for this station.
 JV2533
 JV2533.The dynamic height is computed by dividing the NAVD 88
 JV2533.geopotential number by the normal gravity value computed on the
 JV2533.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2533.degrees latitude (g = 980.6199 gals.).
 JV2533
 JV2533.The modeled gravity was interpolated from observed gravity values.
 JV2533
 JV2533;                    North         East    Units  Estimated Accuracy
 JV2533;SPC MD       -   195,390.      365,250.      MT  (+/- 180 meters Scaled)
 JV2533
 JV2533_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ931668(NAD 83)
 JV2533
 JV2533                          SUPERSEDED SURVEY CONTROL
 JV2533
 JV2533  NGVD 29 (11/26/84)   92.107  (m)          302.19   (f) ADJUSTED    2 0
 JV2533
 JV2533.Superseded values are not recommended for survey control.
 JV2533
 JV2533.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2533.See file dsdata.pdf to determine how the superseded data were derived.
 JV2533
 JV2533_MARKER: B = BOLT
 JV2533_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2533_SP_SET: FOUNDATION
 JV2533_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2533
 JV2533  HISTORY     - Date     Condition        Report By
 JV2533  HISTORY     - UNK      MONUMENTED       PRR
 JV2533  HISTORY     - 1935     GOOD             CGS
 JV2533  HISTORY     - 1953     MARK NOT FOUND   CGS
 JV2533  HISTORY     - 20040518 MARK NOT FOUND   USPSQD
 JV2533
 JV2533                          STATION DESCRIPTION
 JV2533
 JV2533'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2533'1 MI NE FROM FREDERICK.
 JV2533'ABOUT 1.0 MILE NORTHEAST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV2533'THE CITY OPERA HOUSE AT FREDERICK, FREDERICK COUNTY, 42 FEET
 JV2533'SOUTH OF MILEPOST 1, ABOUT 135 FEET NORTH OF A YARD-LIMIT SIGN,
 JV2533'15 FEET WEST OF THE CENTER LINE OF THE TRACK, 27 FEET EAST OF
 JV2533'THE RIGHT-OF-WAY FENCE, AND IN THE TOP OF AN OLD SEMAPHORE
 JV2533'FOUNDATION.  AN IRON BOLT.
 JV2533
 JV2533                          STATION RECOVERY (1953)
 JV2533
 JV2533'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953
 JV2533'MARK NOT FOUND.
 JV2533
 JV2533                          STATION RECOVERY (2004)
 JV2533
 JV2533'RECOVERY NOTE BY US POWER SQUADRON 2004 (BJK)
 JV2533'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0422 ***********************************************************************
 JV0422  DESIGNATION -  67
 JV0422  PID         -  JV0422
 JV0422  STATE/COUNTY-  MD/BALTIMORE
 JV0422  COUNTRY     -  US
 JV0422  USGS QUAD   -  WHITE MARSH (2016)
 JV0422
 JV0422                         *CURRENT SURVEY CONTROL
 JV0422  ______________________________________________________________________
 JV0422* NAD 83(1986) POSITION- 39 24 47.     (N) 076 23 31.     (W)   SCALED
 JV0422* NAVD 88 ORTHO HEIGHT -    20.205 (meters)       66.29  (feet) ADJUSTED
 JV0422  ______________________________________________________________________
 JV0422  GEOID HEIGHT    -        -32.982 (meters)                     GEOID18
 JV0422  DYNAMIC HEIGHT  -         20.194 (meters)       66.25  (feet) COMP
 JV0422  MODELED GRAVITY -    980,105.5   (mgal)                       NAVD 88
 JV0422
 JV0422  VERT ORDER      -  FIRST     CLASS I
 JV0422
 JV0422.The horizontal coordinates were scaled from a map and have
 JV0422.an estimated accuracy of +/- 6 seconds.
 JV0422
 JV0422.The orthometric height was determined by differential leveling and
 JV0422.adjusted by the NATIONAL GEODETIC SURVEY
 JV0422.in June 1991.
 JV0422
 JV0422.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0422.GEOID18 height accuracy estimate available here.
 JV0422
 JV0422.Click photographs - Photos may exist for this station.
 JV0422
 JV0422.The dynamic height is computed by dividing the NAVD 88
 JV0422.geopotential number by the normal gravity value computed on the
 JV0422.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0422.degrees latitude (g = 980.6199 gals.).
 JV0422
 JV0422.The modeled gravity was interpolated from observed gravity values.
 JV0422
 JV0422;                    North         East    Units  Estimated Accuracy
 JV0422;SPC MD       -   194,040.      452,370.      MT  (+/- 180 meters Scaled)
 JV0422
 JV0422_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ801635(NAD 83)
 JV0422
 JV0422                          SUPERSEDED SURVEY CONTROL
 JV0422
 JV0422  NGVD 29 (11/26/84)   20.449  (m)           67.09   (f) ADJUSTED    1 1
 JV0422
 JV0422.Superseded values are not recommended for survey control.
 JV0422
 JV0422.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0422.See file dsdata.pdf to determine how the superseded data were derived.
 JV0422
 JV0422_MARKER: Q = CHISELED SQUARE
 JV0422_SETTING: 66 = SET IN ROCK OUTCROP
 JV0422_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV0422+STABILITY: POSITION/ELEVATION WELL
 JV0422
 JV0422  HISTORY     - Date     Condition        Report By
 JV0422  HISTORY     - UNK      MONUMENTED       USGS
 JV0422  HISTORY     - 1971     GOOD             NGS
 JV0422
 JV0422                          STATION DESCRIPTION
 JV0422
 JV0422'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0422'3.8 MI W FROM JOPPA.
 JV0422'ABOUT 3.15 MILES WEST ALONG STATE HIGHWAY 7 FROM THE TRINITY
 JV0422'LUTHERAN CHURCH AND CEMETERY AT JOPPA, THENCE 0.5 MILE SOUTHEAST
 JV0422'ALONG JONES ROAD, THENCE 0.2 MILE SOUTHWEST ALONG THE BALTIMORE AND
 JV0422'OHIO RAILROAD, ABOUT 0.1 MILE NORTHEAST OF THE NORTHEAST END OF A
 JV0422'RAILROAD BRIDGE OVER THE GUNPOWDER FALLS, SET IN THE TOP OF A
 JV0422'ROCK LEDGE WHICH IS 2 FEET LONG AND 1 FOOT WIDE AND WHICH IS
 JV0422'PART OF A ROCK CUT THAT IS 27 YARDS LONG AND 10 FEET HIGH, 21 1/2
 JV0422'FEET NORTH OF THE NORTH RAIL, 5.8 FEET WEST OF THE EAST END OF
 JV0422'THE CUT, 61 1/2 FEET NORTHWEST AND ACROSS THE TRACK FROM THE 9TH
 JV0422'TELEGRAPH POLE NORTHEAST OF THE BRIDGE, ABOUT LEVEL WITH THE TRACK,
 JV0422'AND ABOUT 1 FOOT ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2525 ***********************************************************************
 JV2525  DESIGNATION -  67
 JV2525  PID         -  JV2525
 JV2525  STATE/COUNTY-  MD/FREDERICK
 JV2525  COUNTRY     -  US
 JV2525  USGS QUAD   -  FREDERICK (2016)
 JV2525
 JV2525                         *CURRENT SURVEY CONTROL
 JV2525  ______________________________________________________________________
 JV2525* NAD 83(1986) POSITION- 39 24 47.2    (N) 077 24 20.8    (W)   HD_HELD2
 JV2525* NAVD 88 ORTHO HEIGHT -    85.520 (meters)      280.58  (feet) ADJUSTED
 JV2525  ______________________________________________________________________
 JV2525  GEOID HEIGHT    -        -32.713 (meters)                     GEOID18
 JV2525  DYNAMIC HEIGHT  -         85.474 (meters)      280.43  (feet) COMP
 JV2525  MODELED GRAVITY -    980,090.9   (mgal)                       NAVD 88
 JV2525
 JV2525  VERT ORDER      -  SECOND    CLASS 0
 JV2525
 JV2525.The horizontal coordinates were established by autonomous hand held GPS
 JV2525.observations and have an estimated accuracy of +/- 10 meters.
 JV2525
 JV2525.The orthometric height was determined by differential leveling and
 JV2525.adjusted by the NATIONAL GEODETIC SURVEY
 JV2525.in June 1991.
 JV2525
 JV2525.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2525.GEOID18 height accuracy estimate available here.
 JV2525
 JV2525.Click photographs - Photos may exist for this station.
 JV2525
 JV2525.The dynamic height is computed by dividing the NAVD 88
 JV2525.geopotential number by the normal gravity value computed on the
 JV2525.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2525.degrees latitude (g = 980.6199 gals.).
 JV2525
 JV2525.The modeled gravity was interpolated from observed gravity values.
 JV2525
 JV2525;                    North         East    Units  Estimated Accuracy
 JV2525;SPC MD       -   193,946.      365,055.      MT  (+/- 10 meters HH2 GPS)
 JV2525
 JV2525_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9288465383(NAD 83)
 JV2525
 JV2525                          SUPERSEDED SURVEY CONTROL
 JV2525
 JV2525  NGVD 29 (11/26/84)   85.739  (m)          281.30   (f) ADJUSTED    2 0
 JV2525
 JV2525.Superseded values are not recommended for survey control.
 JV2525
 JV2525.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2525.See file dsdata.pdf to determine how the superseded data were derived.
 JV2525
 JV2525_MARKER: B = BOLT
 JV2525_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JV2525_SP_SET: RETAINING WALL
 JV2525_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2525_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2525+SATELLITE: SATELLITE OBSERVATIONS - March 06, 2024
 JV2525
 JV2525  HISTORY     - Date     Condition        Report By
 JV2525  HISTORY     - UNK      MONUMENTED       PRR
 JV2525  HISTORY     - 1935     GOOD             CGS
 JV2525  HISTORY     - 20130407 GOOD             GEOCAC
 JV2525  HISTORY     - 20140604 GOOD             RODCON
 JV2525  HISTORY     - 20200404 GOOD             WSRR
 JV2525  HISTORY     - 20240306 GOOD             MD0580
 JV2525
 JV2525                          STATION DESCRIPTION
 JV2525
 JV2525'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2525'AT FREDERICK.
 JV2525'AT FREDERICK, FREDERICK COUNTY, ABOUT 414 FEET SOUTH OF THE
 JV2525'PENNSYLVANIA RAILROAD FREIGHT STATION, ABOUT 96 FEET NORTHWEST
 JV2525'OF THE NORTH END OF A BRIDGE OVER TOWN CREEK, AT THE CROSSING
 JV2525'OF PARTRICKS STREET, ABOUT 297 FEET SOUTH OF THE CENTER LINE OF
 JV2525'THE STREET, ABOUT 93 FEET WEST OF THE CENTER LINE OF THE TRACK,
 JV2525'AND IN THE TOP OF THE SOUTH END OF A CONCRETE RETAINING WALL.
 JV2525'A COPPER BOLT.
 JV2525
 JV2525                          STATION RECOVERY (2013)
 JV2525
 JV2525'RECOVERY NOTE BY GEOCACHING 2013 (EJK)
 JV2525'MARK IS LOCATED ABOUT 100 FEET NNW OF THE BRIDGE CARRYING S. EAST
 JV2525'STREET OVER CARROLL CREEK - ABOUT 20 FEET W OF THE BRICK RETAINING
 JV2525'WALL AT THE W EDGE OF S. EAST STREET, AND ABOUT 297 FEET S OF E.
 JV2525'PATRICK STREET, AND IN TOP OF THE S END OF A CONCRETE RETAINING WALL
 JV2525'RUNNING N-S.
 JV2525'
 JV2525'A COPPER BOLT LOCATED NEAR THE E EDGE OF THE CONCRETE WALL AND ABOUT 1
 JV2525'FOOT N OF THE S END. 'BM' IS CHISELED BESIDE THE BOLT, BUT IS BARELY
 JV2525'VISIBLE.
 JV2525'
 JV2525
 JV2525                          STATION RECOVERY (2014)
 JV2525
 JV2525'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV2525'RECOVERED IN GOOD CONDITION.
 JV2525
 JV2525                          STATION RECOVERY (2020)
 JV2525
 JV2525'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV2525'RECOVERED IN GOOD CONDITION.
 JV2525
 JV2525                          STATION RECOVERY (2024)
 JV2525
 JV2525'RECOVERY NOTE BY CITY OF FREDERICK MARYLAND 2024 (CK)
 JV2525'RECOVERED BY THE CITY OF FREDERICK ENGINEERING DEPARTMENT SURVEY
 JV2525'SECTION STAFF.  COULD SEE THE FAINT OUTLINE OF THE "M" IN BENCH MARK
 JV2525'JUST SOUTH OF THE COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0406 ***********************************************************************
 JW0406  DESIGNATION -  688
 JW0406  PID         -  JW0406
 JW0406  STATE/COUNTY-  MD/ALLEGANY
 JW0406  COUNTRY     -  US
 JW0406  USGS QUAD   -  CUMBERLAND (2016)
 JW0406
 JW0406                         *CURRENT SURVEY CONTROL
 JW0406  ______________________________________________________________________
 JW0406* NAD 83(1986) POSITION- 39 39 03.1    (N) 078 46 00.2    (W)   HD_HELD2
 JW0406* NAVD 88 ORTHO HEIGHT -   209.565 (meters)      687.55  (feet) ADJUSTED
 JW0406  ______________________________________________________________________
 JW0406  GEOID HEIGHT    -        -32.707 (meters)                     GEOID18
 JW0406  DYNAMIC HEIGHT  -        209.444 (meters)      687.15  (feet) COMP
 JW0406  MODELED GRAVITY -    980,044.6   (mgal)                       NAVD 88
 JW0406
 JW0406  VERT ORDER      -  FIRST     CLASS II
 JW0406
 JW0406.The horizontal coordinates were established by autonomous hand held GPS
 JW0406.observations and have an estimated accuracy of +/- 10 meters.
 JW0406
 JW0406.The orthometric height was determined by differential leveling and
 JW0406.adjusted by the NATIONAL GEODETIC SURVEY
 JW0406.in June 1991.
 JW0406
 JW0406.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0406.GEOID18 height accuracy estimate available here.
 JW0406
 JW0406.Click photographs - Photos may exist for this station.
 JW0406
 JW0406.The dynamic height is computed by dividing the NAVD 88
 JW0406.geopotential number by the normal gravity value computed on the
 JW0406.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0406.degrees latitude (g = 980.6199 gals.).
 JW0406
 JW0406.The modeled gravity was interpolated from observed gravity values.
 JW0406
 JW0406;                    North         East    Units  Estimated Accuracy
 JW0406;SPC MD       -   221,732.      248,370.      MT  (+/- 10 meters HH2 GPS)
 JW0406
 JW0406_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9160891390(NAD 83)
 JW0406
 JW0406                          SUPERSEDED SURVEY CONTROL
 JW0406
 JW0406  NGVD 29 (??/??/92)  209.760  (m)          688.19   (f) ADJ UNCH    1 2
 JW0406
 JW0406.Superseded values are not recommended for survey control.
 JW0406
 JW0406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0406.See file dsdata.pdf to determine how the superseded data were derived.
 JW0406
 JW0406_MARKER: DB = BENCH MARK DISK
 JW0406_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 JW0406_SP_SET: COURTHOUSE WALL
 JW0406_STAMPING: 688 C
 JW0406_MARK LOGO: USGS
 JW0406_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW0406_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW0406+STABILITY: POSITION/ELEVATION WELL
 JW0406_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0406+SATELLITE: SATELLITE OBSERVATIONS - October 11, 2025
 JW0406
 JW0406  HISTORY     - Date     Condition        Report By
 JW0406  HISTORY     - 1897     MONUMENTED       USGS
 JW0406  HISTORY     - 1935     GOOD             CGS
 JW0406  HISTORY     - 1967     GOOD             CGS
 JW0406  HISTORY     - 1983     GOOD             NGS
 JW0406  HISTORY     - 19911106 GOOD             MDSHA
 JW0406  HISTORY     - 19921104 GOOD             MDSHA
 JW0406  HISTORY     - 20061114 GOOD             USPSQD
 JW0406  HISTORY     - 20090321 GOOD             GEOCAC
 JW0406  HISTORY     - 20251011 GOOD             DJAE
 JW0406
 JW0406                          STATION DESCRIPTION
 JW0406
 JW0406'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0406'AT CUMBERLAND.
 JW0406'AT CUMBERLAND, ALLEGANY COUNTY, AT THE INTERSECTION OF WASHINGTON
 JW0406'STREET AND PROSPECT STREET, 50 FEET SOUTH OF THE SOUTH CURB OF
 JW0406'WASHINGTON STREET, 47.2 FEET WEST OF THE WEST CURB OF PROSPECT
 JW0406'STREET, AT THE COURTHOUSE, IN THE EAST WALL AT THE NORTHEAST
 JW0406'CORNER OF THE BUILDING, 46.4 FEET EAST OF THE NORTH ENTRANCE, AND
 JW0406'3.5 FEET ABOVE THE GROUND.  A UNITED STATES GEOLOGICAL SURVEY
 JW0406'STANDARD DISK, STAMPED 688 AND SET VERTICALLY.
 JW0406
 JW0406                          STATION RECOVERY (1967)
 JW0406
 JW0406'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JW0406'RECOVERED IN GOOD CONDITION.
 JW0406
 JW0406                          STATION RECOVERY (1983)
 JW0406
 JW0406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0406'RECOVERED IN GOOD CONDITION.
 JW0406
 JW0406                          STATION RECOVERY (1991)
 JW0406
 JW0406'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW0406'RECOVERED IN GOOD CONDITION.
 JW0406
 JW0406                          STATION RECOVERY (1992)
 JW0406
 JW0406'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW0406'RECOVERED IN GOOD CONDITION.
 JW0406
 JW0406                          STATION RECOVERY (2006)
 JW0406
 JW0406'RECOVERY NOTE BY US POWER SQUADRON 2006 (DEB)
 JW0406'RECOVERED IN GOOD CONDITION.
 JW0406
 JW0406                          STATION RECOVERY (2009)
 JW0406
 JW0406'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 JW0406'RECOVERED IN GOOD CONDITION.
 JW0406
 JW0406                          STATION RECOVERY (2025)
 JW0406
 JW0406'RECOVERY NOTE BY DJA ENGINEERING 2025 (MR)
 JW0406'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1283 ***********************************************************************
 JU1283  DESIGNATION -  69 RESET
 JU1283  PID         -  JU1283
 JU1283  STATE/COUNTY-  MD/QUEEN ANNES
 JU1283  COUNTRY     -  US
 JU1283  USGS QUAD   -  SUDLERSVILLE (2017)
 JU1283
 JU1283                         *CURRENT SURVEY CONTROL
 JU1283  ______________________________________________________________________
 JU1283* NAD 83(1986) POSITION- 39 08 38.     (N) 075 51 42.     (W)   SCALED
 JU1283* NAVD 88 ORTHO HEIGHT -    20.44  (meters)       67.1   (feet) RESET
 JU1283  ______________________________________________________________________
 JU1283  GEOID HEIGHT    -        -33.873 (meters)                     GEOID18
 JU1283  VERT ORDER      -  THIRD
 JU1283
 JU1283.The horizontal coordinates were scaled from a map and have
 JU1283.an estimated accuracy of +/- 6 seconds.
 JU1283
 JU1283.The orthometric height was computed from unverified reset data.
 JU1283
 JU1283.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1283.GEOID18 height accuracy estimate available here.
 JU1283
 JU1283.Click photographs - Photos may exist for this station.
 JU1283
 JU1283;                    North         East    Units  Estimated Accuracy
 JU1283;SPC MD       -   164,590.      498,400.      MT  (+/- 180 meters Scaled)
 JU1283
 JU1283_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ255330(NAD 83)
 JU1283
 JU1283                          SUPERSEDED SURVEY CONTROL
 JU1283
 JU1283  NGVD 29 (??/??/??)   20.68   (m)           67.8    (f) RESET       3  
 JU1283
 JU1283.Superseded values are not recommended for survey control.
 JU1283
 JU1283.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1283.See file dsdata.pdf to determine how the superseded data were derived.
 JU1283
 JU1283_MARKER: DB = BENCH MARK DISK
 JU1283_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1283_STAMPING: 69 MGS RESET 1971
 JU1283_MARK LOGO: CGS
 JU1283_PROJECTION: FLUSH
 JU1283_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1283+STABILITY: SURFACE MOTION
 JU1283
 JU1283  HISTORY     - Date     Condition        Report By
 JU1283  HISTORY     - 1971     MONUMENTED       NGS
 JU1283  HISTORY     - 19900606 MARK NOT FOUND   USPSQD
 JU1283
 JU1283                          STATION DESCRIPTION
 JU1283
 JU1283'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1283'AT BARCLAY.
 JU1283'IN THE EAST EDGE OF BARCLAY, 0.2 MILE EAST OF THE CROSSROAD
 JU1283'AT JUNCTION OF STATE HIGHWAYS 302 AND 313.  IT IS 50 FEET WEST
 JU1283'OF THE CENTERLINE OF A DRIVEWAY, 36.5 FEET NORTH OF THE NORTH ONE
 JU1283'OF TWO CEDAR TREES, 26.5 FEET EAST OF THE CENTERLINE OF A
 JU1283'DRIVEWAY, 26.5 FEET SOUTH OF THE CENTERLINE OF HIGHWAY 302, 9.0
 JU1283'FEET WEST OF A 16-INCH WILD CHERRY TREE, AND 2.0 FEET WEST OF A
 JU1283'CONCRETE HIGHWAY MARKER NO. 2.  THE DISK IS SET IN THE TOP OF A
 JU1283'ROUND CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND.
 JU1283
 JU1283                          STATION RECOVERY (1990)
 JU1283
 JU1283'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1283'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1189 ***********************************************************************
 JU1189  DESIGNATION -  69.23
 JU1189  PID         -  JU1189
 JU1189  STATE/COUNTY-  MD/QUEEN ANNES
 JU1189  COUNTRY     -  US
 JU1189  USGS QUAD   -  SUDLERSVILLE (2017)
 JU1189
 JU1189                         *CURRENT SURVEY CONTROL
 JU1189  ______________________________________________________________________
 JU1189* NAD 83(1986) POSITION- 39 11 15.     (N) 075 51 23.     (W)   SCALED
 JU1189* NAVD 88 ORTHO HEIGHT -    21.087 (meters)       69.18  (feet) ADJUSTED
 JU1189  ______________________________________________________________________
 JU1189  GEOID HEIGHT    -        -33.760 (meters)                     GEOID18
 JU1189  DYNAMIC HEIGHT  -         21.076 (meters)       69.15  (feet) COMP
 JU1189  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 JU1189
 JU1189  VERT ORDER      -  SECOND    CLASS 0
 JU1189
 JU1189.The horizontal coordinates were scaled from a map and have
 JU1189.an estimated accuracy of +/- 6 seconds.
 JU1189
 JU1189.The orthometric height was determined by differential leveling and
 JU1189.adjusted by the NATIONAL GEODETIC SURVEY
 JU1189.in June 1991.
 JU1189
 JU1189.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1189.GEOID18 height accuracy estimate available here.
 JU1189
 JU1189.Click photographs - Photos may exist for this station.
 JU1189
 JU1189.The dynamic height is computed by dividing the NAVD 88
 JU1189.geopotential number by the normal gravity value computed on the
 JU1189.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1189.degrees latitude (g = 980.6199 gals.).
 JU1189
 JU1189.The modeled gravity was interpolated from observed gravity values.
 JU1189
 JU1189;                    North         East    Units  Estimated Accuracy
 JU1189;SPC MD       -   169,440.      498,800.      MT  (+/- 180 meters Scaled)
 JU1189
 JU1189_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ260379(NAD 83)
 JU1189
 JU1189                          SUPERSEDED SURVEY CONTROL
 JU1189
 JU1189  NGVD 29 (11/26/84)   21.325  (m)           69.96   (f) ADJUSTED    2 0
 JU1189
 JU1189.Superseded values are not recommended for survey control.
 JU1189
 JU1189.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1189.See file dsdata.pdf to determine how the superseded data were derived.
 JU1189
 JU1189_MARKER: B = BOLT
 JU1189_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JU1189_SP_SET: STEP
 JU1189_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU1189
 JU1189  HISTORY     - Date     Condition        Report By
 JU1189  HISTORY     - UNK      MONUMENTED       PRR
 JU1189  HISTORY     - 1964     GOOD             CGS
 JU1189  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JU1189  HISTORY     - 20050507 MARK NOT FOUND   USPSQD
 JU1189
 JU1189                          STATION DESCRIPTION
 JU1189
 JU1189'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1189'AT SUDLERSVILLE.
 JU1189'AT THE PENNSYLVANIA RAILROAD STATION IN SUDERSVILLE, 6 FEET
 JU1189'SOUTH OF THE NORTHEAST CORNER OF THE PENNSYLVANIA RAILROAD
 JU1189'STATION, 11 FEET WEST OF THE WEST RAIL, IN THE TOP OF THE DOOR
 JU1189'STEP OF THE WAITING ROOM AND ABOUT 1 FOOT HIGHER THAN THE
 JU1189'TRACK.
 JU1189
 JU1189                          STATION RECOVERY (1990)
 JU1189
 JU1189'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1189'MARK NOT FOUND.
 JU1189
 JU1189                          STATION RECOVERY (2005)
 JU1189
 JU1189'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 JU1189'WOODEN DECK COVERS THE ORIGINAL CONCRETE STEP.  REMOVAL OF SEVERAL
 JU1189'PLANKS FAILED TO RECOVER THE MARK WHICH PLOTS UNDER ONE OF THE
 JU1189'STRINGERS FOR THE DECK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2354 ***********************************************************************
 HV2354  DESIGNATION -  697 WSSC
 HV2354  PID         -  HV2354
 HV2354  STATE/COUNTY-  MD/MONTGOMERY
 HV2354  COUNTRY     -  US
 HV2354  USGS QUAD   -  FALLS CHURCH (2019)
 HV2354
 HV2354                         *CURRENT SURVEY CONTROL
 HV2354  ______________________________________________________________________
 HV2354* NAD 83(1986) POSITION- 38 59 23.     (N) 077 09 05.     (W)   SCALED
 HV2354* NAVD 88 ORTHO HEIGHT -    64.564 (meters)      211.82  (feet) ADJUSTED
 HV2354  ______________________________________________________________________
 HV2354  GEOID HEIGHT    -        -31.803 (meters)                     GEOID18
 HV2354  DYNAMIC HEIGHT  -         64.530 (meters)      211.71  (feet) COMP
 HV2354  MODELED GRAVITY -    980,096.6   (mgal)                       NAVD 88
 HV2354
 HV2354  VERT ORDER      -  SECOND    CLASS 0
 HV2354
 HV2354.The horizontal coordinates were scaled from a map and have
 HV2354.an estimated accuracy of +/- 6 seconds.
 HV2354
 HV2354.The orthometric height was determined by differential leveling and
 HV2354.adjusted by the NATIONAL GEODETIC SURVEY
 HV2354.in June 1991.
 HV2354
 HV2354.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2354.GEOID18 height accuracy estimate available here.
 HV2354
 HV2354.Click photographs - Photos may exist for this station.
 HV2354
 HV2354.The dynamic height is computed by dividing the NAVD 88
 HV2354.geopotential number by the normal gravity value computed on the
 HV2354.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2354.degrees latitude (g = 980.6199 gals.).
 HV2354
 HV2354.The modeled gravity was interpolated from observed gravity values.
 HV2354
 HV2354;                    North         East    Units  Estimated Accuracy
 HV2354;SPC MD       -   146,880.      386,880.      MT  (+/- 180 meters Scaled)
 HV2354
 HV2354_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ136178(NAD 83)
 HV2354
 HV2354                          SUPERSEDED SURVEY CONTROL
 HV2354
 HV2354  NGVD 29 (11/26/84)   64.795  (m)          212.58   (f) ADJUSTED    2 0
 HV2354
 HV2354.Superseded values are not recommended for survey control.
 HV2354
 HV2354.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2354.See file dsdata.pdf to determine how the superseded data were derived.
 HV2354
 HV2354_MARKER: B = BOLT
 HV2354_SETTING: 0 = UNSPECIFIED SETTING
 HV2354_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2354
 HV2354  HISTORY     - Date     Condition        Report By
 HV2354  HISTORY     - UNK      MONUMENTED       WSSC
 HV2354  HISTORY     - 1957     GOOD             WSSC
 HV2354
 HV2354                          STATION DESCRIPTION
 HV2354
 HV2354'DESCRIBED BY WASH SUBURB SAN COMM 1957
 HV2354'3.6 MI SE FROM POTOMAC.
 HV2354'3.6 MI. S.E. ALONG STATE 190 (RIVER ROAD) FROM ITS INTERSECTION
 HV2354'WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC, ABOUT 400 FT. E. OF
 HV2354'THE JUNCTION WITH BURDETTE ROAD, NEAR THE S.W. CORNER OF STONE
 HV2354'FOUNDATION OF HOUSE ON N. SIDE OF RIVER ROAD APPROX. 150 FT. FROM
 HV2354'THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8114 ***********************************************************************
 AI8114  DESIGNATION -  6984
 AI8114  PID         -  AI8114
 AI8114  STATE/COUNTY-  MD/C OF BALTIMORE
 AI8114  COUNTRY     -  US
 AI8114  USGS QUAD   -  BALTIMORE EAST (2016)
 AI8114
 AI8114                         *CURRENT SURVEY CONTROL
 AI8114  ______________________________________________________________________
 AI8114* NAD 83(2011) POSITION- 39 15 16.17669(N) 076 31 59.79602(W)   ADJUSTED
 AI8114* NAD 83(2011) ELLIP HT-   -30.793 (meters)        (06/27/12)   ADJUSTED
 AI8114* NAD 83(2011) EPOCH   -  2010.00
 AI8114* NAVD 88 ORTHO HEIGHT -     2.2   (meters)        7.    (feet) GPS OBS
 AI8114  ______________________________________________________________________
 AI8114  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8114  GEOID HEIGHT    -        -32.939 (meters)                     GEOID99
 AI8114  GEOID HEIGHT    -        -32.951 (meters)                     GEOID18
 AI8114  NAD 83(2011) X  -  1,151,704.964 (meters)                     COMP
 AI8114  NAD 83(2011) Y  - -4,809,500.242 (meters)                     COMP
 AI8114  NAD 83(2011) Z  -  4,014,214.946 (meters)                     COMP
 AI8114  LAPLACE CORR    -         -2.75  (seconds)                    DEFLEC18
 AI8114
 AI8114  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8114  Standards:
 AI8114         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8114            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8114  -------------------------------------------------------------------
 AI8114  NETWORK    1.17   1.51           0.54   0.39   0.77      0.06125567
 AI8114  -------------------------------------------------------------------
 AI8114  Click here for local accuracies and other accuracy information.
 AI8114
 AI8114.The horizontal coordinates were established by GPS observations
 AI8114.and adjusted by the National Geodetic Survey in June 2012.
 AI8114
 AI8114.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8114.been affixed to the stable North American tectonic plate. See 
 AI8114.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8114
 AI8114.The horizontal coordinates are valid at the epoch date displayed above
 AI8114.which is a decimal equivalence of Year/Month/Day.
 AI8114
 AI8114.The orthometric height was determined by GPS observations and a
 AI8114.high-resolution geoid model.
 AI8114
 AI8114.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8114.GEOID18 height accuracy estimate available here.
 AI8114
 AI8114.Click photographs - Photos may exist for this station.
 AI8114
 AI8114.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8114
 AI8114.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8114
 AI8114.The ellipsoidal height was determined by GPS observations
 AI8114.and is referenced to NAD 83.
 AI8114
 AI8114. The following values were computed from the NAD 83(2011) position.
 AI8114
 AI8114;                    North         East     Units Scale Factor Converg.
 AI8114;SPC MD       -   176,361.404   440,284.012   MT  0.99997164   +0 17 34.6
 AI8114;SPC MD       -   578,612.37  1,444,498.46   sFT  0.99997164   +0 17 34.6
 AI8114;UTM  18      - 4,346,138.867   367,704.631   MT  0.99981550   -0 58 13.2
 AI8114
 AI8114!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8114!SPC MD       -   1.00000483  x   0.99997164  =   0.99997647
 AI8114!UTM  18      -   1.00000483  x   0.99981550  =   0.99982033
 AI8114
 AI8114_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6770446138(NAD 83)
 AI8114
 AI8114                          SUPERSEDED SURVEY CONTROL
 AI8114
 AI8114  NAD 83(2007)-  39 15 16.17693(N)    076 31 59.79678(W) AD(2002.00) 0
 AI8114  ELLIP H (02/10/07)  -30.777  (m)                       GP(2002.00)    
 AI8114  ELLIP H (08/30/02)  -30.764  (m)                       GP(       ) 4 2
 AI8114  NAD 83(1991)-  39 15 16.17688(N)    076 31 59.79628(W) AD(       ) 1
 AI8114  ELLIP H (10/26/00)  -30.861  (m)                       GP(       ) 4 1
 AI8114
 AI8114.Superseded values are not recommended for survey control.
 AI8114
 AI8114.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8114.See file dsdata.pdf to determine how the superseded data were derived.
 AI8114
 AI8114_MARKER: S = SPIKE
 AI8114_SETTING: 0 = UNSPECIFIED SETTING
 AI8114_MARK LOGO: NONE
 AI8114_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI8114_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI8114_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8114+SATELLITE: SATELLITE OBSERVATIONS - 1999
 AI8114
 AI8114  HISTORY     - Date     Condition        Report By
 AI8114  HISTORY     - 1999     MONUMENTED       MD0050
 AI8114
 AI8114                          STATION DESCRIPTION
 AI8114
 AI8114'DESCRIBED BY CITY OF BALTIMORE MARYLAND 1999
 AI8114'THE STATION IS LOCATED 4.66 MILES (7.50 KM) S.E.  OF THE INNER HARBOR
 AI8114'OF BALTIMORE CITY.  THE POINT IS A SPIKE IN ASPHALT ROAD NEAR THE S.E.
 AI8114'CORNER OF NORTH SERVICE ROAD AND FIRST STREET.  IT IS 7.8 FT. (2.4 M)
 AI8114'S.E.  OF A STORMDRAIN GRATE ON THE S.E.  CORNER OF INTERSECTION, 18.15
 AI8114'N.W.  OF A SIGN, AND 66.35 FT.  (20.22 M) S.E. OF A STORMDRAIN GRATE
 AI8114'ON THE N.W.  CORNER OF THE INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7263 ***********************************************************************
 HV7263  DESIGNATION -  7
 HV7263  PID         -  HV7263
 HV7263  STATE/COUNTY-  MD/CALVERT
 HV7263  COUNTRY     -  US
 HV7263  USGS QUAD   -  NORTH BEACH (2016)
 HV7263
 HV7263                         *CURRENT SURVEY CONTROL
 HV7263  ______________________________________________________________________
 HV7263* NAD 83(1993) POSITION- 38 39 11.28692(N) 076 31 37.56928(W)   ADJUSTED
 HV7263* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV7263  ______________________________________________________________________
 HV7263  GEOID HEIGHT    -        -33.780 (meters)                     GEOID18
 HV7263  LAPLACE CORR    -         -5.51  (seconds)                    DEFLEC18
 HV7263  HORZ ORDER      -  THIRD
 HV7263
 HV7263.The horizontal coordinates were established by classical geodetic methods
 HV7263.and adjusted by the National Geodetic Survey in November 1994.
 HV7263
 HV7263.The orthometric height was scaled from a topographic map.
 HV7263
 HV7263.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7263.GEOID18 height accuracy estimate available here.
 HV7263
 HV7263.Click photographs - Photos may exist for this station.
 HV7263
 HV7263.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7263
 HV7263. The following values were computed from the NAD 83(1993) position.
 HV7263
 HV7263;                    North         East     Units Scale Factor Converg.
 HV7263;SPC MD       -   109,608.474   441,162.723   MT  0.99995736   +0 17 48.5
 HV7263;SPC MD       -   359,607.14  1,447,381.37   sFT  0.99995736   +0 17 48.5
 HV7263;UTM  18      - 4,279,391.996   367,118.816   MT  0.99981744   -0 57 14.3
 HV7263
 HV7263!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7263!SPC MD       -   1.00000487  x   0.99995736  =   0.99996223
 HV7263!UTM  18      -   1.00000487  x   0.99981744  =   0.99982231
 HV7263
 HV7263_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6711879391(NAD 83)
 HV7263
 HV7263                          SUPERSEDED SURVEY CONTROL
 HV7263
 HV7263  NAD 83(1986)-  38 39 11.28470(N)    076 31 37.58300(W) AD(       ) 3
 HV7263  NAD 27      -  38 39 10.84500(N)    076 31 38.74400(W) AD(       ) 3
 HV7263
 HV7263.Superseded values are not recommended for survey control.
 HV7263
 HV7263.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7263.See file dsdata.pdf to determine how the superseded data were derived.
 HV7263
 HV7263_MARKER: DB = BENCH MARK DISK
 HV7263_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7263_STAMPING: NO 7 1945
 HV7263_MARK LOGO: CGS
 HV7263_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7263+STABILITY: SURFACE MOTION
 HV7263
 HV7263  HISTORY     - Date     Condition        Report By
 HV7263  HISTORY     - 1945     MONUMENTED       CGS
 HV7263  HISTORY     - 1960     GOOD             CGS
 HV7263
 HV7263                          STATION DESCRIPTION
 HV7263
 HV7263'DESCRIBED BY COAST AND GEODETIC SURVEY 1945 (TBR)
 HV7263'THE MARK IS LOCATED ON THE GROUNDS OF THE NAVAL RESEARCH
 HV7263'LABORATORY, RANDLE CLIFF.  IT IS ABOUT 550 FEET S OF THE S FENCE
 HV7263'AROUND THE MAIN PART OF THE NAVAL BASE, ABOUT 200 FEET S OF A
 HV7263'CONCRETE RETAINING WALL, ABOUT 250 FEET SSW OF A RAILWAY ENDING AT
 HV7263'THE BEACH, AND ABOUT 40 FEET W AND ABOUT 10 FEET ABOVE THE
 HV7263'HIGH-WATER LINE.
 HV7263'
 HV7263'STATION MARK IS A BRONZE BENCH-MARK DISK SET IN A CONCRETE POST.
 HV7263'IT PROJECTS ABOUT 3 INCHES ABOVE THE SURFACE OF THE GROUND.  THE
 HV7263'DISK IS STAMPED NO 7 1945.
 HV7263'
 HV7263'HALF-TIDE LEVEL (APPROXIMATE SEA LEVEL) ELEVATION 8.98 FEET.
 HV7263
 HV7263                          STATION RECOVERY (1960)
 HV7263
 HV7263'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7263'STATION RECOVERED IN GOOD CONDITION.  THE 1945 DESCRIPTION IS
 HV7263'ADEQUATE WITH THE FOLLOWING ADDITIONS.  THE STATION IS 21 FEET
 HV7263'S.W. OF THE CENTER OF A 3.5 FT. SQUARE CONCRETE SHOWER PLATFORM
 HV7263'AND ABOUT 65 FEET N.E. OF THE FENCE THAT FORMS THE SOUTHERN
 HV7263'BOUNDARY OF THE NAVAL BASE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7826 ***********************************************************************
 DR7826  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7826  DESIGNATION -  7
 DR7826  PID         -  DR7826
 DR7826  STATE/COUNTY-  MD/QUEEN ANNES
 DR7826  COUNTRY     -  US
 DR7826  USGS QUAD   -  KENT ISLAND (2016)
 DR7826
 DR7826                         *CURRENT SURVEY CONTROL
 DR7826  ______________________________________________________________________
 DR7826* NAD 83(2011) POSITION- 38 56 58.90650(N) 076 18 14.11572(W)   ADJUSTED
 DR7826* NAD 83(2011) ELLIP HT-   -29.466 (meters)        (02/02/22)   ADJUSTED
 DR7826* NAD 83(2011) EPOCH   -  2010.00
 DR7826* NAVD 88 ORTHO HEIGHT -     4.21  (meters)       13.8   (feet) GPS OBS
 DR7826  ______________________________________________________________________
 DR7826  GEOID HEIGHT    -        -33.683 (meters)                     GEOID18
 DR7826  NAD 83(2011) X  -  1,176,001.480 (meters)                     COMP
 DR7826  NAD 83(2011) Y  - -4,825,587.117 (meters)                     COMP
 DR7826  NAD 83(2011) Z  -  3,987,957.008 (meters)                     COMP
 DR7826  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 DR7826
 DR7826  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7826  Standards:
 DR7826         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7826            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7826  -------------------------------------------------------------------
 DR7826  NETWORK    0.71   1.65           0.31   0.27   0.84     -0.14757025
 DR7826  -------------------------------------------------------------------
 DR7826  Click here for local accuracies and other accuracy information.
 DR7826
 DR7826.The horizontal coordinates were established by GPS observations
 DR7826.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7826
 DR7826.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7826.been affixed to the stable North American tectonic plate. See 
 DR7826.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7826
 DR7826.The horizontal coordinates are valid at the epoch date displayed above
 DR7826.which is a decimal equivalence of Year/Month/Day.
 DR7826
 DR7826.The orthometric height was determined by GPS observations and a
 DR7826.high-resolution geoid model using precise GPS observation and
 DR7826.processing techniques.
 DR7826
 DR7826.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7826.GEOID18 height accuracy estimate available here.
 DR7826
 DR7826.Click photographs - Photos may exist for this station.
 DR7826
 DR7826.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7826
 DR7826.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7826
 DR7826.The ellipsoidal height was determined by GPS observations
 DR7826.and is referenced to NAD 83.
 DR7826
 DR7826. The following values were computed from the NAD 83(2011) position.
 DR7826
 DR7826;                    North         East     Units Scale Factor Converg.
 DR7826;SPC MD       -   142,652.050   460,337.930   MT  0.99995068   +0 26 12.8
 DR7826;SPC MD       -   468,017.60  1,510,292.03   sFT  0.99995068   +0 26 12.8
 DR7826;UTM  18      - 4,312,002.667   387,009.219   MT  0.99975721   -0 49 11.2
 DR7826
 DR7826!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7826!SPC MD       -   1.00000462  x   0.99995068  =   0.99995530
 DR7826!UTM  18      -   1.00000462  x   0.99975721  =   0.99976183
 DR7826
 DR7826_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8700912002(NAD 83)
 DR7826
 DR7826                          SUPERSEDED SURVEY CONTROL
 DR7826
 DR7826.No superseded survey control is available for this station.
 DR7826
 DR7826_MARKER: DD = SURVEY DISK
 DR7826_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7826_STAMPING: 7
 DR7826_MARK LOGO: MD-035
 DR7826_PROJECTION: RECESSED 9 CENTIMETERS
 DR7826_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7826+STABILITY: SURFACE MOTION
 DR7826_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7826+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7826
 DR7826  HISTORY     - Date     Condition        Report By
 DR7826  HISTORY     - UNK      MONUMENTED       MD-035
 DR7826  HISTORY     - 20210309 GOOD             MDSHA
 DR7826
 DR7826                          STATION DESCRIPTION
 DR7826
 DR7826'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7826'THE MARK IS LOCATED ABOUT 2.2 MI (3.5 KM) SOUTH-SOUTHEAST OF
 DR7826'STEVENSVILLE, 1.9 MI (3.1 KM) SOUTH-SOUTHWEST OF CHESTER AND 1.2 MI
 DR7826'(1.9 KM) WEST OF DOMINION.
 DR7826'
 DR7826'TO REACH FROM THE INTERSECTION OF US 50 AND COX NECK ROAD, GO SOUTH ON
 DR7826'COX NECK ROAD FOR 1.5 MI (2.4 KM) TO THE INTERSECTION OF WOODS ROAD.
 DR7826'BEAR RIGHT AND GO SOUTHWEST ON WOODS ROAD FOR 0.5 MI (0.8 KM) TO THE
 DR7826'INTERSECTION OF BENTONS PLEASURE ROAD AND THE MARK ON THE RIGHT IN THE
 DR7826'SOUTHWEST ANGLE OF THE INTERSECTION.
 DR7826'
 DR7826'THE MARK IS 243.4 FT (74.2 M) EAST OF A DPL POWER LINE POLE NUMBERED
 DR7826'54695-19609, 124.7 FT (38.0 M) WEST-SOUTHWEST OF A DPL POWER LINE POLE
 DR7826'NUMBERED 11B, 22.8 FT (6.9 M) SOUTH OF THE CENTERLINE OF BENTONS
 DR7826'PLEASURE ROAD, 21.7 FT (6.6 M) NORTHWEST OF THE CENTERLINE OF WOODS
 DR7826'POINT ROAD, 12.7 FT (3.9 M) WEST OF A POWER LINE POLE WITH NO MARKINGS
 DR7826'AND SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3575 ***********************************************************************
 JU3575  DESIGNATION -  7 2
 JU3575  PID         -  JU3575
 JU3575  STATE/COUNTY-  MD/CECIL
 JU3575  COUNTRY     -  US
 JU3575  USGS QUAD   -  EARLEVILLE (2016)
 JU3575
 JU3575                         *CURRENT SURVEY CONTROL
 JU3575  ______________________________________________________________________
 JU3575* NAD 83(1991) POSITION- 39 27 55.31888(N) 075 57 18.76203(W)   ADJUSTED
 JU3575* NAVD 88 ORTHO HEIGHT -    13.    (meters)       43.    (feet) SCALED
 JU3575  ______________________________________________________________________
 JU3575  GEOID HEIGHT    -        -33.360 (meters)                     GEOID18
 JU3575  LAPLACE CORR    -         -0.71  (seconds)                    DEFLEC18
 JU3575  HORZ ORDER      -  THIRD
 JU3575
 JU3575.The horizontal coordinates were established by classical geodetic methods
 JU3575.and adjusted by the National Geodetic Survey in January 1992.
 JU3575
 JU3575.The orthometric height was scaled from a topographic map.
 JU3575
 JU3575.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3575.GEOID18 height accuracy estimate available here.
 JU3575
 JU3575.Click photographs - Photos may exist for this station.
 JU3575
 JU3575.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3575
 JU3575. The following values were computed from the NAD 83(1991) position.
 JU3575
 JU3575;                    North         East     Units Scale Factor Converg.
 JU3575;SPC MD       -   200,184.201   489,908.682   MT  1.00000272   +0 39 20.7
 JU3575;SPC MD       -   656,771.00  1,607,308.73   sFT  1.00000272   +0 39 20.7
 JU3575;UTM  18      - 4,368,856.240   417,830.358   MT  0.99968313   -0 36 25.8
 JU3575
 JU3575!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3575!SPC MD       -   1.00000323  x   1.00000272  =   1.00000595
 JU3575!UTM  18      -   1.00000323  x   0.99968313  =   0.99968636
 JU3575
 JU3575:                Primary Azimuth Mark                     Grid Az
 JU3575:SPC MD       -  8                                        253 55 28.1
 JU3575:UTM  18      -  8                                        255 11 14.6
 JU3575
 JU3575_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1783068856(NAD 83)
 JU3575
 JU3575|---------------------------------------------------------------------|
 JU3575| PID    Reference Object                     Distance      Geod. Az  |
 JU3575|                                                           dddmmss.s |
 JU3575| JU3602 8                                   APPROX. 1.0 KM 2543448.8 |
 JU3575|---------------------------------------------------------------------|
 JU3575
 JU3575                          SUPERSEDED SURVEY CONTROL
 JU3575
 JU3575  NAD 83(1986)-  39 27 55.31131(N)    075 57 18.76844(W) AD(       ) 3
 JU3575  NAD 27      -  39 27 54.91400(N)    075 57 19.98100(W) AD(       ) 3
 JU3575
 JU3575.Superseded values are not recommended for survey control.
 JU3575
 JU3575.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3575.See file dsdata.pdf to determine how the superseded data were derived.
 JU3575
 JU3575_MARKER: DD = SURVEY DISK
 JU3575_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3575_MARK LOGO: USACE
 JU3575_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3575+STABILITY: SURFACE MOTION
 JU3575
 JU3575  HISTORY     - Date     Condition        Report By
 JU3575  HISTORY     - 1937     MONUMENTED       USACE
 JU3575
 JU3575                          STATION DESCRIPTION
 JU3575
 JU3575'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3575'LOCATED ON THE S SIDE OF ELK RIVER ON A 35-FOOT BLUFF ON THE N
 JU3575'SIDE OF MOUTH TO CABIN JOHN CREEK.  IT IS ABOUT 200 METERS SW
 JU3575'OF A SMALL DOCK AND IS 8.3 METERS INSHORE FROM THE BLUFF
 JU3575'BANK.  THE STATION IS STANDARD U.S.E.D. DISK SET ATOP 6-INCH
 JU3575'SQUARE CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1256 ***********************************************************************
 HV1256  DESIGNATION -  7 A
 HV1256  PID         -  HV1256
 HV1256  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1256  COUNTRY     -  US
 HV1256  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1256
 HV1256                         *CURRENT SURVEY CONTROL
 HV1256  ______________________________________________________________________
 HV1256* NAD 83(1986) POSITION- 38 57 53.     (N) 076 56 03.     (W)   SCALED
 HV1256* NAVD 88 ORTHO HEIGHT -    15.225 (meters)       49.95  (feet) POSTED
 HV1256  ______________________________________________________________________
 HV1256  GEOID HEIGHT    -        -32.161 (meters)                     GEOID18
 HV1256  DYNAMIC HEIGHT  -         15.22  (meters)       49.9   (feet) COMP
 HV1256  MODELED GRAVITY -    980,104.3   (mgal)                       NAVD 88
 HV1256
 HV1256  VERT ORDER      -  * POSTED, SEE BELOW
 HV1256
 HV1256.The horizontal coordinates were scaled from a map and have
 HV1256.an estimated accuracy of +/- 6 seconds.
 HV1256
 HV1256.The orthometric height was determined by differential leveling
 HV1256.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV1256
 HV1256.* This is a POSTED BENCH MARK height.
 HV1256
 HV1256.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1256.GEOID18 height accuracy estimate available here.
 HV1256
 HV1256.Click photographs - Photos may exist for this station.
 HV1256
 HV1256.The dynamic height is computed by dividing the NAVD 88
 HV1256.geopotential number by the normal gravity value computed on the
 HV1256.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1256.degrees latitude (g = 980.6199 gals.).
 HV1256
 HV1256.The modeled gravity was interpolated from observed gravity values.
 HV1256
 HV1256;                    North         East    Units  Estimated Accuracy
 HV1256;SPC MD       -   144,090.      405,710.      MT  (+/- 180 meters Scaled)
 HV1256
 HV1256_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ324146(NAD 83)
 HV1256
 HV1256                          SUPERSEDED SURVEY CONTROL
 HV1256
 HV1256  NGVD 29 (11/26/84)   15.452  (m)           50.70   (f) ADJUSTED    1 2
 HV1256
 HV1256.Superseded values are not recommended for survey control.
 HV1256
 HV1256.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1256.See file dsdata.pdf to determine how the superseded data were derived.
 HV1256
 HV1256_MARKER: B = BOLT
 HV1256_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1256_SP_SET: BRIDGE
 HV1256_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1256
 HV1256  HISTORY     - Date     Condition        Report By
 HV1256  HISTORY     - 1903     MONUMENTED       BORR
 HV1256  HISTORY     - 1942     GOOD             CGS
 HV1256  HISTORY     - 1971     MARK NOT FOUND   BORR
 HV1256
 HV1256                          STATION DESCRIPTION
 HV1256
 HV1256'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1256'AT RIVERDALE.
 HV1256'AT RIVERDALE, PRINCE GEORGES COUNTY, ON THE BALTIMORE AND OHIO
 HV1256'RAILROAD, 0.15 MILE NORTH OF THE STATION, AT BRIDGE 33 A, IN
 HV1256'THE TOP OF THE NORTHWEST WING WALL, 8 FEET WEST OF THE WEST RAIL,
 HV1256'AND ABOUT 4-1/2 FEET LOWER THAN THE BASE OF THE RAIL.  A COPPER
 HV1256'BOLT.  NOTE-- IT WAS REPORTED IN OCTOBER 1942 THAT THE BRIDGE
 HV1256'HAS BEEN EXTENDED TO COVER THIS MARK, SO THAT THERE IS ONLY
 HV1256'ABOUT 4 INCHES OF SPACE BETWEEN THE MARK AND THE FLOOR OF THE
 HV1256'BRIDGE.
 HV1256
 HV1256                          STATION RECOVERY (1971)
 HV1256
 HV1256'RECOVERY NOTE BY BALTIMORE AND OHIO RAILROAD 1971
 HV1256'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2189 ***********************************************************************
 HU2189  DESIGNATION -  7 KEM
 HU2189  PID         -  HU2189
 HU2189  STATE/COUNTY-  MD/WICOMICO
 HU2189  COUNTRY     -  US
 HU2189  USGS QUAD   -  WETIPQUIN (2016)
 HU2189
 HU2189                         *CURRENT SURVEY CONTROL
 HU2189  ______________________________________________________________________
 HU2189* NAD 83(1986) POSITION- 38 20 59.8    (N) 075 47 37.7    (W)   HD_HELD2
 HU2189* NAVD 88 ORTHO HEIGHT -     2.634 (meters)        8.64  (feet) ADJUSTED
 HU2189  ______________________________________________________________________
 HU2189  GEOID HEIGHT    -        -35.704 (meters)                     GEOID18
 HU2189  DYNAMIC HEIGHT  -          2.632 (meters)        8.64  (feet) COMP
 HU2189  MODELED GRAVITY -    980,002.7   (mgal)                       NAVD 88
 HU2189
 HU2189  VERT ORDER      -  SECOND    CLASS I
 HU2189
 HU2189.The horizontal coordinates were established by autonomous hand held GPS
 HU2189.observations and have an estimated accuracy of +/- 10 meters.
 HU2189
 HU2189.The orthometric height was determined by differential leveling and
 HU2189.adjusted by the NATIONAL GEODETIC SURVEY
 HU2189.in June 1991.
 HU2189
 HU2189.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2189.GEOID18 height accuracy estimate available here.
 HU2189
 HU2189.Click photographs - Photos may exist for this station.
 HU2189
 HU2189.The dynamic height is computed by dividing the NAVD 88
 HU2189.geopotential number by the normal gravity value computed on the
 HU2189.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2189.degrees latitude (g = 980.6199 gals.).
 HU2189
 HU2189.The modeled gravity was interpolated from observed gravity values.
 HU2189
 HU2189;                    North         East    Units  Estimated Accuracy
 HU2189;SPC MD       -    76,543.      505,434.      MT  (+/- 10 meters HH2 GPS)
 HU2189
 HU2189_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3063744941(NAD 83)
 HU2189
 HU2189                          SUPERSEDED SURVEY CONTROL
 HU2189
 HU2189  NGVD 29 (06/12/91)    2.888  (m)            9.48   (f) ADJUSTED    2 1
 HU2189
 HU2189.Superseded values are not recommended for survey control.
 HU2189
 HU2189.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2189.See file dsdata.pdf to determine how the superseded data were derived.
 HU2189
 HU2189_MARKER: DB = BENCH MARK DISK
 HU2189_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2189_STAMPING: 7 KEM 1977
 HU2189_MARK LOGO: USGS
 HU2189_PROJECTION: RECESSED 9 CENTIMETERS
 HU2189_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2189_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2189+STABILITY: SURFACE MOTION
 HU2189
 HU2189  HISTORY     - Date     Condition        Report By
 HU2189  HISTORY     - 1977     MONUMENTED       USGS
 HU2189  HISTORY     - 19900308 GOOD             NGS
 HU2189  HISTORY     - 20170330 GOOD             PROFLN
 HU2189  HISTORY     - 20190515 SEE DESCRIPTION  PROFLN
 HU2189
 HU2189                          STATION DESCRIPTION
 HU2189
 HU2189'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2189'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM ITS JUNCTION
 HU2189'WITH CHERRY WALK ROAD IN QUANTICO, THENCE 5.0 KM (3.11 MI)
 HU2189'SOUTHWESTERLY ALONG STATE HIGHWAY 349, 26.0 M (85.30 FT) NORTHWEST OF
 HU2189'AND LEVEL WITH THE HIGHWAY CENTER, 20.0 M (65.62 FT) SOUTHWEST OF THE
 HU2189'CENTER OF ROYAL OAK ROAD, 2.3 M (7.55 FT) SOUTHWEST OF THE CENTER OF
 HU2189'THE ROYAL OAK CHURCH ENTRANCE, 1.4 M (4.59 FT) NORTHEAST OF THE SOUTH
 HU2189'CORNER OF THE CHURCH, 0.4 M (1.31 FT) SOUTHEAST OF THE SOUTHEAST FACE
 HU2189'OF THE CHURCH, AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE
 HU2189'GROUND SURFACE.
 HU2189
 HU2189                          STATION RECOVERY (2017)
 HU2189
 HU2189'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2189'RECOVERED IN GOOD CONDITION.
 HU2189
 HU2189                          STATION RECOVERY (2019)
 HU2189
 HU2189'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2189'THE MARK ITSELF WAS RECOVERED IN GOOD SHAPE AS DESCRIBED BUT THE
 HU2189'CHURCH HAS BURNED AND IS IN BAD SHAPE.  DEMO OPERATIONS AT WHATEVER
 HU2189'TIME IN THE FUTURE MAY DISTURB THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1193 ***********************************************************************
 JV1193  DESIGNATION -  7 PRR
 JV1193  PID         -  JV1193
 JV1193  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1193  COUNTRY     -  US
 JV1193  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1193
 JV1193                         *CURRENT SURVEY CONTROL
 JV1193  ______________________________________________________________________
 JV1193* NAD 83(1986) POSITION- 39 22 04.     (N) 076 39 05.     (W)   SCALED
 JV1193* NAVD 88 ORTHO HEIGHT -    60.017 (meters)      196.91  (feet) ADJUSTED
 JV1193  ______________________________________________________________________
 JV1193  GEOID HEIGHT    -        -32.493 (meters)                     GEOID18
 JV1193  DYNAMIC HEIGHT  -         59.985 (meters)      196.80  (feet) COMP
 JV1193  MODELED GRAVITY -    980,100.6   (mgal)                       NAVD 88
 JV1193
 JV1193  VERT ORDER      -  SECOND    CLASS 0
 JV1193
 JV1193.The horizontal coordinates were scaled from a map and have
 JV1193.an estimated accuracy of +/- 6 seconds.
 JV1193
 JV1193.The orthometric height was determined by differential leveling and
 JV1193.adjusted by the NATIONAL GEODETIC SURVEY
 JV1193.in June 1991.
 JV1193
 JV1193.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1193.GEOID18 height accuracy estimate available here.
 JV1193
 JV1193.Click photographs - Photos may exist for this station.
 JV1193
 JV1193.The dynamic height is computed by dividing the NAVD 88
 JV1193.geopotential number by the normal gravity value computed on the
 JV1193.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1193.degrees latitude (g = 980.6199 gals.).
 JV1193
 JV1193.The modeled gravity was interpolated from observed gravity values.
 JV1193
 JV1193;                    North         East    Units  Estimated Accuracy
 JV1193;SPC MD       -   188,890.      430,040.      MT  (+/- 180 meters Scaled)
 JV1193
 JV1193_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ577588(NAD 83)
 JV1193
 JV1193                          SUPERSEDED SURVEY CONTROL
 JV1193
 JV1193  NGVD 29 (11/26/84)   60.246  (m)          197.66   (f) ADJUSTED    2 0
 JV1193
 JV1193.Superseded values are not recommended for survey control.
 JV1193
 JV1193.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1193.See file dsdata.pdf to determine how the superseded data were derived.
 JV1193
 JV1193_MARKER: B = BOLT
 JV1193_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1193_SP_SET: BRIDGE
 JV1193_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1193
 JV1193  HISTORY     - Date     Condition        Report By
 JV1193  HISTORY     - UNK      MONUMENTED       PRR
 JV1193  HISTORY     - 1935     GOOD             CGS
 JV1193
 JV1193                          STATION DESCRIPTION
 JV1193
 JV1193'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1193'AT MT WASHINGTON.
 JV1193'AT MT. WASHINGTON, BALTIMORE COUNTY, 195 FEET SOUTHEAST OF THE
 JV1193'SOUTHEAST CORNER OF THE PENNSYLVANIA RAILROAD STATION, ABOUT 498
 JV1193'FEET SOUTH OF MILEPOST 6, IN THE TOP OF THE SEAT OF BRIDGE 5.92,
 JV1193'AND 9 FEET EAST OF THE CENTERLINE OF THE EAST TRACK.  A COPPER
 JV1193'BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3243 ***********************************************************************
 JV3243  DESIGNATION -  70.60
 JV3243  PID         -  JV3243
 JV3243  STATE/COUNTY-  MD/WASHINGTON
 JV3243  COUNTRY     -  US
 JV3243  USGS QUAD   -  HAGERSTOWN (2016)
 JV3243
 JV3243                         *CURRENT SURVEY CONTROL
 JV3243  ______________________________________________________________________
 JV3243* NAD 83(1986) POSITION- 39 41 25.     (N) 077 44 38.     (W)   SCALED
 JV3243* NAVD 88 ORTHO HEIGHT -   188.103 (meters)      617.13  (feet) ADJUSTED
 JV3243  ______________________________________________________________________
 JV3243  GEOID HEIGHT    -        -34.259 (meters)                     GEOID18
 JV3243  DYNAMIC HEIGHT  -        187.992 (meters)      616.77  (feet) COMP
 JV3243  MODELED GRAVITY -    980,034.8   (mgal)                       NAVD 88
 JV3243
 JV3243  VERT ORDER      -  FIRST     CLASS II
 JV3243
 JV3243.The horizontal coordinates were scaled from a map and have
 JV3243.an estimated accuracy of +/- 6 seconds.
 JV3243
 JV3243.The orthometric height was determined by differential leveling and
 JV3243.adjusted by the NATIONAL GEODETIC SURVEY
 JV3243.in June 1991.
 JV3243
 JV3243.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3243.GEOID18 height accuracy estimate available here.
 JV3243
 JV3243.Click photographs - Photos may exist for this station.
 JV3243
 JV3243.The dynamic height is computed by dividing the NAVD 88
 JV3243.geopotential number by the normal gravity value computed on the
 JV3243.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3243.degrees latitude (g = 980.6199 gals.).
 JV3243
 JV3243.The modeled gravity was interpolated from observed gravity values.
 JV3243
 JV3243;                    North         East    Units  Estimated Accuracy
 JV3243;SPC MD       -   224,900.      336,190.      MT  (+/- 180 meters Scaled)
 JV3243
 JV3243_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ647969(NAD 83)
 JV3243
 JV3243                          SUPERSEDED SURVEY CONTROL
 JV3243
 JV3243  NGVD 29 (11/26/84)  188.300  (m)          617.78   (f) ADJUSTED    1 2
 JV3243
 JV3243.Superseded values are not recommended for survey control.
 JV3243
 JV3243.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3243.See file dsdata.pdf to determine how the superseded data were derived.
 JV3243
 JV3243_MARKER: B = BOLT
 JV3243_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3243_SP_SET: BRIDGE
 JV3243_MARK LOGO: PRR
 JV3243_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3243_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3243+SATELLITE: SATELLITE OBSERVATIONS - January 09, 2008
 JV3243
 JV3243  HISTORY     - Date     Condition        Report By
 JV3243  HISTORY     - UNK      MONUMENTED       PRR
 JV3243  HISTORY     - 1961     GOOD             CGS
 JV3243  HISTORY     - 20080109 GOOD             GEOCAC
 JV3243
 JV3243                          STATION DESCRIPTION
 JV3243
 JV3243'DESCRIBED BY COAST AND GEODETIC SURVEY 1961
 JV3243'AT MAUGANSVILLE.
 JV3243'3.6 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV3243'AT HAGERSTOWN, WASHINGTON COUNTY, AT BRIDGE 70.60, AND IN THE
 JV3243'CENTER OF THE WEST CONCRETE WALL.  A COPPER BOLT.
 JV3243
 JV3243                          STATION RECOVERY (2008)
 JV3243
 JV3243'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3243'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2355 ***********************************************************************
 HV2355  DESIGNATION -  705 WSSC
 HV2355  PID         -  HV2355
 HV2355  STATE/COUNTY-  MD/MONTGOMERY
 HV2355  COUNTRY     -  US
 HV2355  USGS QUAD   -  FALLS CHURCH (2019)
 HV2355
 HV2355                         *CURRENT SURVEY CONTROL
 HV2355  ______________________________________________________________________
 HV2355* NAD 83(1986) POSITION- 38 59 45.     (N) 077 08 55.     (W)   SCALED
 HV2355* NAVD 88 ORTHO HEIGHT -    73.511 (meters)      241.18  (feet) ADJUSTED
 HV2355  ______________________________________________________________________
 HV2355  GEOID HEIGHT    -        -31.799 (meters)                     GEOID18
 HV2355  DYNAMIC HEIGHT  -         73.472 (meters)      241.05  (feet) COMP
 HV2355  MODELED GRAVITY -    980,096.9   (mgal)                       NAVD 88
 HV2355
 HV2355  VERT ORDER      -  SECOND    CLASS 0
 HV2355
 HV2355.The horizontal coordinates were scaled from a map and have
 HV2355.an estimated accuracy of +/- 6 seconds.
 HV2355
 HV2355.The orthometric height was determined by differential leveling and
 HV2355.adjusted by the NATIONAL GEODETIC SURVEY
 HV2355.in June 1991.
 HV2355
 HV2355.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2355.GEOID18 height accuracy estimate available here.
 HV2355
 HV2355.Click photographs - Photos may exist for this station.
 HV2355
 HV2355.The dynamic height is computed by dividing the NAVD 88
 HV2355.geopotential number by the normal gravity value computed on the
 HV2355.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2355.degrees latitude (g = 980.6199 gals.).
 HV2355
 HV2355.The modeled gravity was interpolated from observed gravity values.
 HV2355
 HV2355;                    North         East    Units  Estimated Accuracy
 HV2355;SPC MD       -   147,550.      387,130.      MT  (+/- 180 meters Scaled)
 HV2355
 HV2355_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ139185(NAD 83)
 HV2355
 HV2355                          SUPERSEDED SURVEY CONTROL
 HV2355
 HV2355  NGVD 29 (11/26/84)   73.742  (m)          241.94   (f) ADJUSTED    2 0
 HV2355
 HV2355.Superseded values are not recommended for survey control.
 HV2355
 HV2355.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2355.See file dsdata.pdf to determine how the superseded data were derived.
 HV2355
 HV2355_MARKER: B = BOLT
 HV2355_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2355_SP_SET: GATE POST
 HV2355_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2355
 HV2355  HISTORY     - Date     Condition        Report By
 HV2355  HISTORY     - UNK      MONUMENTED       WSSC
 HV2355  HISTORY     - 1957     GOOD             WSSC
 HV2355
 HV2355                          STATION DESCRIPTION
 HV2355
 HV2355'DESCRIBED BY WASH SUBURB SAN COMM 1957
 HV2355'4 MI SE FROM POTOMAC.
 HV2355'3.6 MI. S.E. ALONG STATE HWY. 190 (RIVER ROAD) FROM ITS
 HV2355'INTERSECTION WITH STATE HWY. 189 (FALLS ROAD) AT POTOMAC, THENCE
 HV2355'0.45 MI. N.E. ALONG BURDETTE ROAD IN THE N. GATE POST ON THE E.
 HV2355'SIDE OF THE ENTRANCE TO THE BURNING TREE GOLF CLUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0617 ***********************************************************************
 JV0617  DESIGNATION -  71
 JV0617  PID         -  JV0617
 JV0617  STATE/COUNTY-  MD/BALTIMORE
 JV0617  COUNTRY     -  US
 JV0617  USGS QUAD   -  RELAY (2016)
 JV0617
 JV0617                         *CURRENT SURVEY CONTROL
 JV0617  ______________________________________________________________________
 JV0617* NAD 83(1986) POSITION- 39 13 21.     (N) 076 42 46.     (W)   SCALED
 JV0617* NAVD 88 ORTHO HEIGHT -    21.331 (meters)       69.98  (feet) ADJUSTED
 JV0617  ______________________________________________________________________
 JV0617  GEOID HEIGHT    -        -32.520 (meters)                     GEOID18
 JV0617  DYNAMIC HEIGHT  -         21.320 (meters)       69.95  (feet) COMP
 JV0617  MODELED GRAVITY -    980,103.1   (mgal)                       NAVD 88
 JV0617
 JV0617  VERT ORDER      -  FIRST     CLASS II
 JV0617
 JV0617.The horizontal coordinates were scaled from a map and have
 JV0617.an estimated accuracy of +/- 6 seconds.
 JV0617
 JV0617.The orthometric height was determined by differential leveling and
 JV0617.adjusted by the NATIONAL GEODETIC SURVEY
 JV0617.in June 1991.
 JV0617
 JV0617.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0617.GEOID18 height accuracy estimate available here.
 JV0617
 JV0617.Click photographs - Photos may exist for this station.
 JV0617
 JV0617.The dynamic height is computed by dividing the NAVD 88
 JV0617.geopotential number by the normal gravity value computed on the
 JV0617.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0617.degrees latitude (g = 980.6199 gals.).
 JV0617
 JV0617.The modeled gravity was interpolated from observed gravity values.
 JV0617
 JV0617;                    North         East    Units  Estimated Accuracy
 JV0617;SPC MD       -   172,750.      424,800.      MT  (+/- 180 meters Scaled)
 JV0617
 JV0617_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ521428(NAD 83)
 JV0617
 JV0617                          SUPERSEDED SURVEY CONTROL
 JV0617
 JV0617  NGVD 29 (11/26/84)   21.554  (m)           70.72   (f) ADJUSTED    1 2
 JV0617
 JV0617.Superseded values are not recommended for survey control.
 JV0617
 JV0617.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0617.See file dsdata.pdf to determine how the superseded data were derived.
 JV0617
 JV0617_MARKER: DD = SURVEY DISK
 JV0617_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0617_STAMPING: MARYLAND 71 BALTO
 JV0617_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0617+STABILITY: SURFACE MOTION
 JV0617
 JV0617  HISTORY     - Date     Condition        Report By
 JV0617  HISTORY     - 1904     MONUMENTED       USGS
 JV0617  HISTORY     - 1959     GOOD             CGS
 JV0617  HISTORY     - 19980429 MARK NOT FOUND   MDSHA
 JV0617  HISTORY     - 20030315 MARK NOT FOUND   USPSQD
 JV0617
 JV0617                          STATION DESCRIPTION
 JV0617
 JV0617'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0617'AT RELAY.
 JV0617'AT RELAY, BALTIMORE COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JV0617'126 FEET SOUTH OF THE SOUTHWEST CORNER OF THE FORMER STATION
 JV0617'(NOW REMOVED), AT THE SOUTHEAST END OF THOMAS VIADUCT OVER
 JV0617'PATAPSCO RIVER, IN THE NORTHEAST FACE OF THE GRANITE POST AT
 JV0617'THE NORTHEAST END OF THE SOUTH BALUSTRADE, 4.5 FEET SOUTH OF THE
 JV0617'SOUTHEAST RAIL OF THE NORTH-BOUND TRACK, AND 2 FEET ABOVE THE
 JV0617'TRACK.  A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK,
 JV0617'STAMPED MARYLAND 71 BALTO AND SET VERTICALLY.
 JV0617
 JV0617                          STATION RECOVERY (1998)
 JV0617
 JV0617'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV0617'NOT RECOVERED.  THE VIADUCT WAS SEARCHED WITH NO RESULTS.
 JV0617
 JV0617                          STATION RECOVERY (2003)
 JV0617
 JV0617'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV0617'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR8951 ***********************************************************************
 DR8951  HT_MOD      -  This is a Height Modernization Survey Station.
 DR8951  DESIGNATION -  711
 DR8951  PID         -  DR8951
 DR8951  STATE/COUNTY-  MD/BALTIMORE
 DR8951  COUNTRY     -  US
 DR8951  USGS QUAD   -  WHITE MARSH (2016)
 DR8951
 DR8951                         *CURRENT SURVEY CONTROL
 DR8951  ______________________________________________________________________
 DR8951* NAD 83(2011) POSITION- 39 23 53.42502(N) 076 24 15.72958(W)   ADJUSTED
 DR8951* NAD 83(2011) ELLIP HT-    11.450 (meters)        (06/16/23)   ADJUSTED
 DR8951* NAD 83(2011) EPOCH   -  2010.00
 DR8951* NAVD 88 ORTHO HEIGHT -    44.44  (meters)      145.8   (feet) GPS OBS
 DR8951  ______________________________________________________________________
 DR8951  GEOID HEIGHT    -        -32.982 (meters)                     GEOID18
 DR8951  NAD 83(2011) X  -  1,160,154.087 (meters)                     COMP
 DR8951  NAD 83(2011) Y  - -4,797,102.830 (meters)                     COMP
 DR8951  NAD 83(2011) Z  -  4,026,581.047 (meters)                     COMP
 DR8951  LAPLACE CORR    -         -3.98  (seconds)                    DEFLEC18
 DR8951
 DR8951  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR8951  Standards:
 DR8951         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR8951            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR8951  -------------------------------------------------------------------
 DR8951  NETWORK    0.71   1.61           0.31   0.27   0.82     -0.07219766
 DR8951  -------------------------------------------------------------------
 DR8951  Click here for local accuracies and other accuracy information.
 DR8951
 DR8951.The horizontal coordinates were established by GPS observations
 DR8951.and adjusted by the MD DOT HIGHWAY ADMIN in June 2023.
 DR8951
 DR8951.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR8951.been affixed to the stable North American tectonic plate. See 
 DR8951.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR8951
 DR8951.The horizontal coordinates are valid at the epoch date displayed above
 DR8951.which is a decimal equivalence of Year/Month/Day.
 DR8951
 DR8951.The orthometric height was determined by GPS observations and a
 DR8951.high-resolution geoid model using precise GPS observation and
 DR8951.processing techniques.
 DR8951
 DR8951.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR8951.GEOID18 height accuracy estimate available here.
 DR8951
 DR8951.Click photographs - Photos may exist for this station.
 DR8951
 DR8951.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR8951
 DR8951.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR8951
 DR8951.The ellipsoidal height was determined by GPS observations
 DR8951.and is referenced to NAD 83.
 DR8951
 DR8951. The following values were computed from the NAD 83(2011) position.
 DR8951
 DR8951;                    North         East     Units Scale Factor Converg.
 DR8951;SPC MD       -   192,377.111   451,306.097   MT  0.99999134   +0 22 25.8
 DR8951;SPC MD       -   631,157.24  1,480,660.09   sFT  0.99999134   +0 22 25.8
 DR8951;UTM  18      - 4,361,904.579   379,075.333   MT  0.99978004   -0 53 29.3
 DR8951
 DR8951!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR8951!SPC MD       -   0.99999820  x   0.99999134  =   0.99998954
 DR8951!UTM  18      -   0.99999820  x   0.99978004  =   0.99977824
 DR8951
 DR8951_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7907561904(NAD 83)
 DR8951
 DR8951                          SUPERSEDED SURVEY CONTROL
 DR8951
 DR8951.No superseded survey control is available for this station.
 DR8951
 DR8951_MARKER: DD = SURVEY DISK
 DR8951_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR8951_STAMPING: SHA 711 2021
 DR8951_MARK LOGO: MDSHA
 DR8951_PROJECTION: FLUSH
 DR8951_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR8951_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR8951+STABILITY: SURFACE MOTION
 DR8951_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR8951+SATELLITE: SATELLITE OBSERVATIONS - March 22, 2021
 DR8951
 DR8951  HISTORY     - Date     Condition        Report By
 DR8951  HISTORY     - 20210322 MONUMENTED       MDSHA
 DR8951
 DR8951                          STATION DESCRIPTION
 DR8951
 DR8951'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR8951'THE MARK IS LOCATED ABOUT 9.7 KM (6.0 MI) WEST-SOUTHWEST OF EDGEWOOD,
 DR8951'7.7 KM (4.8 MI) NORTH-NORTHEAST OF MIDDLE RIVER AND 2.9 KM (1.8 MI)
 DR8951'EAST-NORTHEAST OF WHITE MARSH.
 DR8951'
 DR8951'TO REACH THE MA FROM THE JUNCTION OF I95 AND MD 152, GO
 DR8951'SOUTH-SOUTHEAST ON MD 152 FOR 0.82 MI (1.32 KM) TO AN INTERSECTION.
 DR8951'TURN RIGHT AND GO SOUTH WEST ON US 40 FOR 4.43 (7.13 KM) TO THE MARK
 DR8951'ON THE RIGHT.
 DR8951'
 DR8951'THE MARK IS 131.2 FT (40.0 M) EAST OF A FLAG POLE, 112.4 FT (34.3 M)
 DR8951'NORTHEAST OF A FIRE HYDRANT, 104.5 FT (31.9 M) WEST-SOUTHWEST OF A
 DR8951'TELEPHONE MANHOLE, 53.9 FT (16.4 M) EAST OF AN ELECTRICAL JUNCTION
 DR8951'BOX, 37.1 FT (11.3 M) NORTH-NORTHWEST OF THE CENTERLINE OF U.S.
 DR8951'HIGHWAY 40 WEST BOUND LANES SET IN THE TOP OF A 12-IN (30 CM) ROUND
 DR8951'CONCRETE MONUMENT AND ABOUT LEVEL WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR8952 ***********************************************************************
 DR8952  HT_MOD      -  This is a Height Modernization Survey Station.
 DR8952  DESIGNATION -  712
 DR8952  PID         -  DR8952
 DR8952  STATE/COUNTY-  MD/BALTIMORE
 DR8952  COUNTRY     -  US
 DR8952  USGS QUAD   -  WHITE MARSH (2016)
 DR8952
 DR8952                         *CURRENT SURVEY CONTROL
 DR8952  ______________________________________________________________________
 DR8952* NAD 83(2011) POSITION- 39 23 44.97825(N) 076 24 26.90485(W)   ADJUSTED
 DR8952* NAD 83(2011) ELLIP HT-    10.855 (meters)        (06/16/23)   ADJUSTED
 DR8952* NAD 83(2011) EPOCH   -  2010.00
 DR8952* NAVD 88 ORTHO HEIGHT -    43.84  (meters)      143.8   (feet) GPS OBS
 DR8952  ______________________________________________________________________
 DR8952  GEOID HEIGHT    -        -32.980 (meters)                     GEOID18
 DR8952  NAD 83(2011) X  -  1,159,932.930 (meters)                     COMP
 DR8952  NAD 83(2011) Y  - -4,797,325.936 (meters)                     COMP
 DR8952  NAD 83(2011) Z  -  4,026,379.367 (meters)                     COMP
 DR8952  LAPLACE CORR    -         -3.89  (seconds)                    DEFLEC18
 DR8952
 DR8952  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR8952  Standards:
 DR8952         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR8952            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR8952  -------------------------------------------------------------------
 DR8952  NETWORK    0.74   1.67           0.32   0.28   0.85     -0.07561443
 DR8952  -------------------------------------------------------------------
 DR8952  Click here for local accuracies and other accuracy information.
 DR8952
 DR8952.The horizontal coordinates were established by GPS observations
 DR8952.and adjusted by the MD DOT HIGHWAY ADMIN in June 2023.
 DR8952
 DR8952.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR8952.been affixed to the stable North American tectonic plate. See 
 DR8952.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR8952
 DR8952.The horizontal coordinates are valid at the epoch date displayed above
 DR8952.which is a decimal equivalence of Year/Month/Day.
 DR8952
 DR8952.The orthometric height was determined by GPS observations and a
 DR8952.high-resolution geoid model using precise GPS observation and
 DR8952.processing techniques.
 DR8952
 DR8952.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR8952.GEOID18 height accuracy estimate available here.
 DR8952
 DR8952.Click photographs - Photos may exist for this station.
 DR8952
 DR8952.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR8952
 DR8952.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR8952
 DR8952.The ellipsoidal height was determined by GPS observations
 DR8952.and is referenced to NAD 83.
 DR8952
 DR8952. The following values were computed from the NAD 83(2011) position.
 DR8952
 DR8952;                    North         East     Units Scale Factor Converg.
 DR8952;SPC MD       -   192,114.882   451,040.400   MT  0.99999097   +0 22 18.8
 DR8952;SPC MD       -   630,296.91  1,479,788.38   sFT  0.99999097   +0 22 18.8
 DR8952;UTM  18      - 4,361,648.336   378,803.968   MT  0.99978085   -0 53 36.2
 DR8952
 DR8952!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR8952!SPC MD       -   0.99999830  x   0.99999097  =   0.99998927
 DR8952!UTM  18      -   0.99999830  x   0.99978085  =   0.99977915
 DR8952
 DR8952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7880361648(NAD 83)
 DR8952
 DR8952                          SUPERSEDED SURVEY CONTROL
 DR8952
 DR8952.No superseded survey control is available for this station.
 DR8952
 DR8952_MARKER: DD = SURVEY DISK
 DR8952_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR8952_STAMPING: SHA 712 2021
 DR8952_MARK LOGO: MDSHA
 DR8952_PROJECTION: FLUSH
 DR8952_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR8952_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR8952+STABILITY: SURFACE MOTION
 DR8952_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR8952+SATELLITE: SATELLITE OBSERVATIONS - April 27, 2021
 DR8952
 DR8952  HISTORY     - Date     Condition        Report By
 DR8952  HISTORY     - 20210427 MONUMENTED       MDSHA
 DR8952
 DR8952                          STATION DESCRIPTION
 DR8952
 DR8952'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR8952'THE MARK IS LOCATED ABOUT 10.0 KM (6.2 MI) WEST-SOUTHWEST OF EDGEWOOD,
 DR8952'7.4 KM (4.6 MI) NORTH-NORTHEAST OF MIDDLE RIVER AND 2.5 KM (1.6 MI)
 DR8952'EAST-NORTHEAST OF WHITE MARSH.
 DR8952'
 DR8952'TO REACH THE MARK FROM THE JUNCTION OF I95 AND MD 152, GO
 DR8952'SOUTH-SOUTHEAST ON MD 152 FOR 0.82 MI (1.32 KM) TO AN INTERSECTION.
 DR8952'TURN RIGHT AND GO SOUTH WEST ON US 40 FOR 4.66 (7.5 KM) TO THE MARK ON
 DR8952'THE RIGHT.   THE MARK IS 161.7 FT (49.3 M) NORTH-NORTHEAST OF A
 DR8952'UTILITY POLE NUMBERED BGE 340734, 131.6 FT (40.1 M) SOUTHWEST OF A
 DR8952'FIRE HYDRANT, 108.6 FT (33.1 M) SOUTH-SOUTHWEST OF THE SOUTH EAST POLE
 DR8952'OF A LARGE SIGN THAT READS BOBBY'S PORTABLE RESTROOMS, 10.2 FT (3.1 M)
 DR8952'SOUTH-SOUTHEAST OF THE EDGE OF A PAVED PARKING LOT OF BOBBY'S PORTABLE
 DR8952'RESTROOMS, 6.7 FT (2.0 M) SOUTH-SOUTHWEST OF A UTILITY POLE NUMBERED
 DR8952'BGE 340735 SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE MONUMENT
 DR8952'AND ABOUT LEVEL WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3232 ***********************************************************************
 JV3232  DESIGNATION -  714+24
 JV3232  PID         -  JV3232
 JV3232  STATE/COUNTY-  MD/WASHINGTON
 JV3232  COUNTRY     -  US
 JV3232  USGS QUAD   -  FUNKSTOWN (2017)
 JV3232
 JV3232                         *CURRENT SURVEY CONTROL
 JV3232  ______________________________________________________________________
 JV3232* NAD 83(1986) POSITION- 39 30 00.     (N) 077 42 27.     (W)   SCALED
 JV3232* NAVD 88 ORTHO HEIGHT -   127.309 (meters)      417.68  (feet) ADJUSTED
 JV3232  ______________________________________________________________________
 JV3232  GEOID HEIGHT    -        -33.814 (meters)                     GEOID18
 JV3232  DYNAMIC HEIGHT  -        127.234 (meters)      417.43  (feet) COMP
 JV3232  MODELED GRAVITY -    980,037.7   (mgal)                       NAVD 88
 JV3232
 JV3232  VERT ORDER      -  SECOND    CLASS 0
 JV3232
 JV3232.The horizontal coordinates were scaled from a map and have
 JV3232.an estimated accuracy of +/- 6 seconds.
 JV3232
 JV3232.The orthometric height was determined by differential leveling and
 JV3232.adjusted by the NATIONAL GEODETIC SURVEY
 JV3232.in June 1991.
 JV3232
 JV3232.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3232.GEOID18 height accuracy estimate available here.
 JV3232
 JV3232.Click photographs - Photos may exist for this station.
 JV3232
 JV3232.The dynamic height is computed by dividing the NAVD 88
 JV3232.geopotential number by the normal gravity value computed on the
 JV3232.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3232.degrees latitude (g = 980.6199 gals.).
 JV3232
 JV3232.The modeled gravity was interpolated from observed gravity values.
 JV3232
 JV3232;                    North         East    Units  Estimated Accuracy
 JV3232;SPC MD       -   203,750.      339,150.      MT  (+/- 180 meters Scaled)
 JV3232
 JV3232_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ671757(NAD 83)
 JV3232
 JV3232                          SUPERSEDED SURVEY CONTROL
 JV3232
 JV3232  NGVD 29 (11/26/84)  127.504  (m)          418.32   (f) ADJUSTED    2 0
 JV3232
 JV3232.Superseded values are not recommended for survey control.
 JV3232
 JV3232.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3232.See file dsdata.pdf to determine how the superseded data were derived.
 JV3232
 JV3232_MARKER: Q = CHISELED SQUARE
 JV3232_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3232_SP_SET: BRIDGE
 JV3232_MARK LOGO: BORR
 JV3232_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3232
 JV3232  HISTORY     - Date     Condition        Report By
 JV3232  HISTORY     - UNK      MONUMENTED       BORR
 JV3232  HISTORY     - 1942     GOOD             CGS
 JV3232
 JV3232                          STATION DESCRIPTION
 JV3232
 JV3232'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3232'1.5 MI N FROM KEEDYSVILLE.
 JV3232'1.5 MILES NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV3232'STATION AT KEEDYSVILLE, WASHINGTON COUNTY, 1,553 FEET SOUTH OF
 JV3232'MILEPOST W 14, AT BRIDGE 30, AND ON THE EAST END OF THE SOUTH
 JV3232'CONCRETE ABUTMENT.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1228 ***********************************************************************
 JU1228  DESIGNATION -  72
 JU1228  PID         -  JU1228
 JU1228  STATE/COUNTY-  MD/QUEEN ANNES
 JU1228  COUNTRY     -  US
 JU1228  USGS QUAD   -  CHURCH HILL (2017)
 JU1228
 JU1228                         *CURRENT SURVEY CONTROL
 JU1228  ______________________________________________________________________
 JU1228* NAD 83(1986) POSITION- 39 13 11.     (N) 075 57 07.     (W)   SCALED
 JU1228* NAVD 88 ORTHO HEIGHT -    21.716 (meters)       71.25  (feet) ADJUSTED
 JU1228  ______________________________________________________________________
 JU1228  GEOID HEIGHT    -        -33.562 (meters)                     GEOID18
 JU1228  DYNAMIC HEIGHT  -         21.705 (meters)       71.21  (feet) COMP
 JU1228  MODELED GRAVITY -    980,109.3   (mgal)                       NAVD 88
 JU1228
 JU1228  VERT ORDER      -  SECOND    CLASS 0
 JU1228
 JU1228.The horizontal coordinates were scaled from a map and have
 JU1228.an estimated accuracy of +/- 6 seconds.
 JU1228
 JU1228.The orthometric height was determined by differential leveling and
 JU1228.adjusted by the NATIONAL GEODETIC SURVEY
 JU1228.in June 1991.
 JU1228
 JU1228.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1228.GEOID18 height accuracy estimate available here.
 JU1228
 JU1228.Click photographs - Photos may exist for this station.
 JU1228
 JU1228.The dynamic height is computed by dividing the NAVD 88
 JU1228.geopotential number by the normal gravity value computed on the
 JU1228.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1228.degrees latitude (g = 980.6199 gals.).
 JU1228
 JU1228.The modeled gravity was interpolated from observed gravity values.
 JU1228
 JU1228;                    North         East    Units  Estimated Accuracy
 JU1228;SPC MD       -   172,920.      490,500.      MT  (+/- 180 meters Scaled)
 JU1228
 JU1228_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ178415(NAD 83)
 JU1228
 JU1228                          SUPERSEDED SURVEY CONTROL
 JU1228
 JU1228  NGVD 29 (11/26/84)   21.953  (m)           72.02   (f) ADJUSTED    2 0
 JU1228
 JU1228.Superseded values are not recommended for survey control.
 JU1228
 JU1228.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1228.See file dsdata.pdf to determine how the superseded data were derived.
 JU1228
 JU1228_MARKER: DB = BENCH MARK DISK
 JU1228_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JU1228_STAMPING: 72 1904
 JU1228_MARK LOGO: USGS
 JU1228_PROJECTION: PROJECTING 20 CENTIMETERS
 JU1228_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU1228
 JU1228  HISTORY     - Date     Condition        Report By
 JU1228  HISTORY     - 1904     MONUMENTED       USGS
 JU1228  HISTORY     - 1943     GOOD             CGS
 JU1228  HISTORY     - 1964     MARK NOT FOUND   CGS
 JU1228
 JU1228                          STATION DESCRIPTION
 JU1228
 JU1228'DESCRIBED BY COAST AND GEODETIC SURVEY 1943
 JU1228'AT MC GINNES.
 JU1228'AT MC GINNES, QUEEN ANNE COUNTY, ON STATE
 JU1228'HIGHWAY 544, 2.9 MILES SOUTHWEST OF CRUMPTON, IN THE SOUTHEAST
 JU1228'ANGLE OF A ROAD INTERSECTION, 16 YARDS EAST OF THE W.T. NICKERSON
 JU1228'STORE (IN 1942), AND 21 FEET SOUTH OF THE CENTERLINE OF THE
 JU1228'HIGHWAY.  A U.S. GEOLOGICAL SURVEY STANDARD CAP, STAMPED 72 1904
 JU1228'AND RIVETED ON THE TOP OF A 3 INCH IRON PIPE PROJECTING 8 INCHES
 JU1228'ABOVE GROUND.
 JU1228
 JU1228                          STATION RECOVERY (1964)
 JU1228
 JU1228'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JU1228'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1797 ***********************************************************************
 HV1797  DESIGNATION -  728 WSSC
 HV1797  PID         -  HV1797
 HV1797  STATE/COUNTY-  MD/MONTGOMERY
 HV1797  COUNTRY     -  US
 HV1797  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1797
 HV1797                         *CURRENT SURVEY CONTROL
 HV1797  ______________________________________________________________________
 HV1797* NAD 83(1986) POSITION- 38 59 38.     (N) 077 04 39.     (W)   SCALED
 HV1797* NAVD 88 ORTHO HEIGHT -    75.987 (meters)      249.30  (feet) ADJUSTED
 HV1797  ______________________________________________________________________
 HV1797  GEOID HEIGHT    -        -31.899 (meters)                     GEOID18
 HV1797  DYNAMIC HEIGHT  -         75.946 (meters)      249.17  (feet) COMP
 HV1797  MODELED GRAVITY -    980,087.1   (mgal)                       NAVD 88
 HV1797
 HV1797  VERT ORDER      -  FIRST     CLASS II
 HV1797
 HV1797.The horizontal coordinates were scaled from a map and have
 HV1797.an estimated accuracy of +/- 6 seconds.
 HV1797
 HV1797.The orthometric height was determined by differential leveling and
 HV1797.adjusted by the NATIONAL GEODETIC SURVEY
 HV1797.in June 1991.
 HV1797
 HV1797.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1797.GEOID18 height accuracy estimate available here.
 HV1797
 HV1797.Click photographs - Photos may exist for this station.
 HV1797
 HV1797.The dynamic height is computed by dividing the NAVD 88
 HV1797.geopotential number by the normal gravity value computed on the
 HV1797.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1797.degrees latitude (g = 980.6199 gals.).
 HV1797
 HV1797.The modeled gravity was interpolated from observed gravity values.
 HV1797
 HV1797;                    North         East    Units  Estimated Accuracy
 HV1797;SPC MD       -   147,330.      393,290.      MT  (+/- 180 meters Scaled)
 HV1797
 HV1797_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ200181(NAD 83)
 HV1797
 HV1797                          SUPERSEDED SURVEY CONTROL
 HV1797
 HV1797  NGVD 29 (11/26/84)   76.201  (m)          250.00   (f) ADJUSTED    1 2
 HV1797
 HV1797.Superseded values are not recommended for survey control.
 HV1797
 HV1797.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1797.See file dsdata.pdf to determine how the superseded data were derived.
 HV1797
 HV1797_MARKER: B = BOLT
 HV1797_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1797_SP_SET: FOUNDATION
 HV1797_STAMPING: WSSC
 HV1797_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1797
 HV1797  HISTORY     - Date     Condition        Report By
 HV1797  HISTORY     - UNK      MONUMENTED       WSSC
 HV1797  HISTORY     - 1933     GOOD             CGS
 HV1797  HISTORY     - 19950804 MARK NOT FOUND   USPSQD
 HV1797  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV1797  HISTORY     - 20020315 MARK NOT FOUND   USPSQD
 HV1797
 HV1797                          STATION DESCRIPTION
 HV1797
 HV1797'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1797'AT CHEVY CHASE LAKE.
 HV1797'AT CHEVY CHASE LAKE, MONTGOMERY COUNTY, ON THE GEORGETOWN BRANCH
 HV1797'OF THE BALTIMORE AND OHIO RAILROAD, AT THE CONNECTICUT AVENUE
 HV1797'CROSSING, 100 FEET SOUTH OF THE CENTERLINE OF THE MAIN TRACK,
 HV1797'50 FEET EAST OF THE CENTERLINE OF CONNECTICUT AVENUE, AT A
 HV1797'WATER TANK, IN THE WEST CORNER OF THE NORTHWEST FOUNDATION, AND
 HV1797'LEVEL WITH THE SURFACE OF THE GROUND.  A WASHINGTON SUBURBAN
 HV1797'SANITARY DISTRICT STANDARD COPPER BOLT AND WASHER, STAMPED WSSC.
 HV1797
 HV1797                          STATION RECOVERY (1995)
 HV1797
 HV1797'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV1797'MARK NOT FOUND.
 HV1797
 HV1797                          STATION RECOVERY (2000)
 HV1797
 HV1797'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV1797'MARK NOT FOUND.
 HV1797
 HV1797                          STATION RECOVERY (2002)
 HV1797
 HV1797'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV1797'THERE IS NO WATER TOWER - AREA NOW RESIDENTIAL
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0406 ***********************************************************************
 HV0406  DESIGNATION -  73
 HV0406  PID         -  HV0406
 HV0406  STATE/COUNTY-  MD/ST MARYS
 HV0406  COUNTRY     -  US
 HV0406  USGS QUAD   -  POINT LOOKOUT (2016)
 HV0406
 HV0406                         *CURRENT SURVEY CONTROL
 HV0406  ______________________________________________________________________
 HV0406* NAD 83(1986) POSITION- 38 07 18.     (N) 076 22 27.     (W)   SCALED
 HV0406* NAVD 88 ORTHO HEIGHT -    21.777 (meters)       71.45  (feet) ADJUSTED
 HV0406  ______________________________________________________________________
 HV0406  GEOID HEIGHT    -        -35.047 (meters)                     GEOID18
 HV0406  DYNAMIC HEIGHT  -         21.762 (meters)       71.40  (feet) COMP
 HV0406  MODELED GRAVITY -    979,978.6   (mgal)                       NAVD 88
 HV0406
 HV0406  VERT ORDER      -  FIRST     CLASS II
 HV0406
 HV0406.The horizontal coordinates were scaled from a map and have
 HV0406.an estimated accuracy of +/- 6 seconds.
 HV0406
 HV0406.The orthometric height was determined by differential leveling and
 HV0406.adjusted by the NATIONAL GEODETIC SURVEY
 HV0406.in June 1991.
 HV0406
 HV0406.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0406.GEOID18 height accuracy estimate available here.
 HV0406
 HV0406.Click photographs - Photos may exist for this station.
 HV0406
 HV0406.The dynamic height is computed by dividing the NAVD 88
 HV0406.geopotential number by the normal gravity value computed on the
 HV0406.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0406.degrees latitude (g = 980.6199 gals.).
 HV0406
 HV0406.The modeled gravity was interpolated from observed gravity values.
 HV0406
 HV0406;                    North         East    Units  Estimated Accuracy
 HV0406;SPC MD       -    50,700.      454,880.      MT  (+/- 180 meters Scaled)
 HV0406
 HV0406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH795202(NAD 83)
 HV0406
 HV0406                          SUPERSEDED SURVEY CONTROL
 HV0406
 HV0406  NGVD 29 (11/26/84)   22.066  (m)           72.39   (f) ADJUSTED    1 2
 HV0406
 HV0406.Superseded values are not recommended for survey control.
 HV0406
 HV0406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0406.See file dsdata.pdf to determine how the superseded data were derived.
 HV0406
 HV0406_MARKER: Q = CHISELED SQUARE
 HV0406_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0406_SP_SET: CULVERT
 HV0406_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0406
 HV0406  HISTORY     - Date     Condition        Report By
 HV0406  HISTORY     - UNK      MONUMENTED       USGS
 HV0406  HISTORY     - 1941     GOOD             CGS
 HV0406  HISTORY     - 1955     GOOD             CGS
 HV0406  HISTORY     - 19901016 MARK NOT FOUND   NGS
 HV0406
 HV0406                          STATION DESCRIPTION
 HV0406
 HV0406'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0406'7.4 MI NW FROM POINT LOOKOUT.
 HV0406'ABOUT 7.4 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE
 HV0406'LIGHTHOUSE AT POINT LOOKOUT, SAINT MARYS COUNTY, AND ON THE
 HV0406'TOP OF A CONCRETE CULVERT.  A CHISELED SQUARE, PAINTED USBM 73.
 HV0406
 HV0406                          STATION RECOVERY (1955)
 HV0406
 HV0406'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955
 HV0406'RECOVERED IN GOOD CONDITION.
 HV0406
 HV0406                          STATION RECOVERY (1990)
 HV0406
 HV0406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV0406'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3437 ***********************************************************************
 JV3437  DESIGNATION -  73.39
 JV3437  PID         -  JV3437
 JV3437  STATE/COUNTY-  MD/WASHINGTON
 JV3437  COUNTRY     -  US
 JV3437  USGS QUAD   -  HAGERSTOWN (2016)
 JV3437
 JV3437                         *CURRENT SURVEY CONTROL
 JV3437  ______________________________________________________________________
 JV3437* NAD 83(1986) POSITION- 39 39 15.1    (N) 077 43 24.1    (W)   HD_HELD2
 JV3437* NAVD 88 ORTHO HEIGHT -   182.910 (meters)      600.10  (feet) ADJUSTED
 JV3437  ______________________________________________________________________
 JV3437  GEOID HEIGHT    -        -34.176 (meters)                     GEOID18
 JV3437  DYNAMIC HEIGHT  -        182.802 (meters)      599.74  (feet) COMP
 JV3437  MODELED GRAVITY -    980,033.4   (mgal)                       NAVD 88
 JV3437
 JV3437  VERT ORDER      -  SECOND    CLASS 0
 JV3437
 JV3437.The horizontal coordinates were established by autonomous hand held GPS
 JV3437.observations and have an estimated accuracy of +/- 10 meters.
 JV3437
 JV3437.The orthometric height was determined by differential leveling and
 JV3437.adjusted by the NATIONAL GEODETIC SURVEY
 JV3437.in June 1991.
 JV3437
 JV3437.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3437.GEOID18 height accuracy estimate available here.
 JV3437
 JV3437.Click photographs - Photos may exist for this station.
 JV3437
 JV3437.The dynamic height is computed by dividing the NAVD 88
 JV3437.geopotential number by the normal gravity value computed on the
 JV3437.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3437.degrees latitude (g = 980.6199 gals.).
 JV3437
 JV3437.The modeled gravity was interpolated from observed gravity values.
 JV3437
 JV3437;                    North         East    Units  Estimated Accuracy
 JV3437;SPC MD       -   220,881.      337,917.      MT  (+/- 10 meters HH2 GPS)
 JV3437
 JV3437_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6634992922(NAD 83)
 JV3437
 JV3437                          SUPERSEDED SURVEY CONTROL
 JV3437
 JV3437  NGVD 29 (11/26/84)  183.100  (m)          600.72   (f) ADJUSTED    2 0
 JV3437
 JV3437.Superseded values are not recommended for survey control.
 JV3437
 JV3437.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3437.See file dsdata.pdf to determine how the superseded data were derived.
 JV3437
 JV3437_MARKER: B = BOLT
 JV3437_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3437_SP_SET: BRIDGE
 JV3437_MARK LOGO: PRR
 JV3437_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3437_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3437+SATELLITE: SATELLITE OBSERVATIONS - December 20, 2007
 JV3437
 JV3437  HISTORY     - Date     Condition        Report By
 JV3437  HISTORY     - UNK      MONUMENTED       PRR
 JV3437  HISTORY     - 1942     GOOD             CGS
 JV3437  HISTORY     - 20060407 GOOD             NGS
 JV3437  HISTORY     - 20071220 GOOD             GEOCAC
 JV3437
 JV3437                          STATION DESCRIPTION
 JV3437
 JV3437'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3437'AT HAGERSTOWN.
 JV3437'ABOUT 0.8 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV3437'STATION AT HAGERSTOWN, WASHINGTON COUNTY, IN THE TOP OF THE
 JV3437'CENTER OF THE WEST HEAD WALL OF HIGHWAY UNDERPASS BRIDGE 73.39,
 JV3437'AND 30 FEET WEST OF THE CENTER LINE OF THE TRACK.  A COPPER BOLT.
 JV3437
 JV3437                          STATION RECOVERY (2006)
 JV3437
 JV3437'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV3437'MARK IS ON THE RAILROAD OVERPASS OVER MITCHELL AVENUE, APPROXIMATELY
 JV3437'0.4 MILES SOUTHWEST OF THE INTERSECTION OF MITCHELL AVENUE AND RT 11
 JV3437'(N BURHANS AVE.) ON THE NORTHWEST SIDE OF HAGERSTOWN.
 JV3437
 JV3437                          STATION RECOVERY (2007)
 JV3437
 JV3437'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV3437'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0568 ***********************************************************************
 JV0568  DESIGNATION -  73.5 C OF B
 JV0568  PID         -  JV0568
 JV0568  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0568  COUNTRY     -  US
 JV0568  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0568
 JV0568                         *CURRENT SURVEY CONTROL
 JV0568  ______________________________________________________________________
 JV0568* NAD 83(1986) POSITION- 39 16 22.     (N) 076 36 29.     (W)   SCALED
 JV0568* NAVD 88 ORTHO HEIGHT -    22.164 (meters)       72.72  (feet) ADJUSTED
 JV0568  ______________________________________________________________________
 JV0568  GEOID HEIGHT    -        -32.767 (meters)                     GEOID18
 JV0568  DYNAMIC HEIGHT  -         22.152 (meters)       72.68  (feet) COMP
 JV0568  MODELED GRAVITY -    980,102.2   (mgal)                       NAVD 88
 JV0568
 JV0568  VERT ORDER      -  FIRST     CLASS I
 JV0568
 JV0568.The horizontal coordinates were scaled from a map and have
 JV0568.an estimated accuracy of +/- 6 seconds.
 JV0568
 JV0568.The orthometric height was determined by differential leveling and
 JV0568.adjusted by the NATIONAL GEODETIC SURVEY
 JV0568.in June 1991.
 JV0568
 JV0568.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0568.GEOID18 height accuracy estimate available here.
 JV0568
 JV0568.Click photographs - Photos may exist for this station.
 JV0568
 JV0568.The dynamic height is computed by dividing the NAVD 88
 JV0568.geopotential number by the normal gravity value computed on the
 JV0568.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0568.degrees latitude (g = 980.6199 gals.).
 JV0568
 JV0568.The modeled gravity was interpolated from observed gravity values.
 JV0568
 JV0568;                    North         East    Units  Estimated Accuracy
 JV0568;SPC MD       -   178,360.      433,820.      MT  (+/- 180 meters Scaled)
 JV0568
 JV0568_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ612482(NAD 83)
 JV0568
 JV0568                          SUPERSEDED SURVEY CONTROL
 JV0568
 JV0568  NGVD 29 (11/26/84)   22.402  (m)           73.50   (f) ADJUSTED    1 1
 JV0568
 JV0568.Superseded values are not recommended for survey control.
 JV0568
 JV0568.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0568.See file dsdata.pdf to determine how the superseded data were derived.
 JV0568
 JV0568_MARKER: Z = SEE DESCRIPTION
 JV0568_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0568_SP_SET: DOOR STEP
 JV0568_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0568
 JV0568  HISTORY     - Date     Condition        Report By
 JV0568  HISTORY     - UNK      MONUMENTED       MD0050
 JV0568  HISTORY     - 1971     GOOD             NGS
 JV0568  HISTORY     - 19971027 MARK NOT FOUND   USPSQD
 JV0568
 JV0568                          STATION DESCRIPTION
 JV0568
 JV0568'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0568'AT BALTIMORE.
 JV0568'BALTIMORE, ON FORT AVENUE, AT THE INTERSECTION OF RIVERSIDE
 JV0568'AVENUE, AT THE MAIN ENTRANCE TO THE FIRE HOUSE, ON THE NORTHWEST
 JV0568'CORNER OF THE DOORSTEP, 35 FEET SOUTH OF THE CENTER LINE OF
 JV0568'FORT AVENUE, AND ABOUT 10 INCHES ABOVE THE PAVEMENT.  A COPPER
 JV0568'PLUG.
 JV0568
 JV0568                          STATION RECOVERY (1997)
 JV0568
 JV0568'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0568'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8115 ***********************************************************************
 AI8115  DESIGNATION -  7329
 AI8115  PID         -  AI8115
 AI8115  STATE/COUNTY-  MD/C OF BALTIMORE
 AI8115  COUNTRY     -  US
 AI8115  USGS QUAD   -  CURTIS BAY (2016)
 AI8115
 AI8115                         *CURRENT SURVEY CONTROL
 AI8115  ______________________________________________________________________
 AI8115* NAD 83(2011) POSITION- 39 12 06.82643(N) 076 32 58.89517(W)   ADJUSTED
 AI8115* NAD 83(2011) ELLIP HT-   -13.011 (meters)        (06/27/12)   ADJUSTED
 AI8115* NAD 83(2011) EPOCH   -  2010.00
 AI8115* NAVD 88 ORTHO HEIGHT -    20.0   (meters)       66.    (feet) GPS OBS
 AI8115  ______________________________________________________________________
 AI8115  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8115  GEOID HEIGHT    -        -32.959 (meters)                     GEOID99
 AI8115  GEOID HEIGHT    -        -32.970 (meters)                     GEOID18
 AI8115  NAD 83(2011) X  -  1,151,189.063 (meters)                     COMP
 AI8115  NAD 83(2011) Y  - -4,813,434.991 (meters)                     COMP
 AI8115  NAD 83(2011) Z  -  4,009,702.857 (meters)                     COMP
 AI8115  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 AI8115
 AI8115  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8115  Standards:
 AI8115         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8115            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8115  -------------------------------------------------------------------
 AI8115  NETWORK    0.87   1.29           0.39   0.31   0.66      0.14313567
 AI8115  -------------------------------------------------------------------
 AI8115  Click here for local accuracies and other accuracy information.
 AI8115
 AI8115.The horizontal coordinates were established by GPS observations
 AI8115.and adjusted by the National Geodetic Survey in June 2012.
 AI8115
 AI8115.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8115.been affixed to the stable North American tectonic plate. See 
 AI8115.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8115
 AI8115.The horizontal coordinates are valid at the epoch date displayed above
 AI8115.which is a decimal equivalence of Year/Month/Day.
 AI8115
 AI8115.The orthometric height was determined by GPS observations and a
 AI8115.high-resolution geoid model.
 AI8115
 AI8115.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8115.GEOID18 height accuracy estimate available here.
 AI8115
 AI8115.Click photographs - Photos may exist for this station.
 AI8115
 AI8115.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8115
 AI8115.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8115
 AI8115.The ellipsoidal height was determined by GPS observations
 AI8115.and is referenced to NAD 83.
 AI8115
 AI8115. The following values were computed from the NAD 83(2011) position.
 AI8115
 AI8115;                    North         East     Units Scale Factor Converg.
 AI8115;SPC MD       -   170,515.197   438,895.886   MT  0.99996600   +0 16 57.5
 AI8115;SPC MD       -   559,431.94  1,439,944.25   sFT  0.99996600   +0 16 57.5
 AI8115;UTM  18      - 4,340,325.548   366,188.233   MT  0.99982047   -0 58 46.7
 AI8115
 AI8115!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8115!SPC MD       -   1.00000204  x   0.99996600  =   0.99996804
 AI8115!UTM  18      -   1.00000204  x   0.99982047  =   0.99982251
 AI8115
 AI8115_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6618840325(NAD 83)
 AI8115
 AI8115                          SUPERSEDED SURVEY CONTROL
 AI8115
 AI8115  NAD 83(2007)-  39 12 06.82667(N)    076 32 58.89595(W) AD(2002.00) 0
 AI8115  ELLIP H (02/10/07)  -12.994  (m)                       GP(2002.00)    
 AI8115  ELLIP H (08/30/02)  -12.981  (m)                       GP(       ) 4 2
 AI8115  NAD 83(1991)-  39 12 06.82670(N)    076 32 58.89549(W) AD(       ) 1
 AI8115  ELLIP H (10/26/00)  -13.074  (m)                       GP(       ) 4 1
 AI8115
 AI8115.Superseded values are not recommended for survey control.
 AI8115
 AI8115.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8115.See file dsdata.pdf to determine how the superseded data were derived.
 AI8115
 AI8115_MARKER: S = SPIKE
 AI8115_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AI8115_SP_SET: WALK
 AI8115_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI8115_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI8115_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8115+SATELLITE: SATELLITE OBSERVATIONS - May 01, 2025
 AI8115
 AI8115  HISTORY     - Date     Condition        Report By
 AI8115  HISTORY     - 1999     MONUMENTED       MD0050
 AI8115  HISTORY     - 20060609 GOOD             GPSSS
 AI8115  HISTORY     - 20091109 GOOD             GPSSS
 AI8115  HISTORY     - 20250501 GOOD             WHIREQ
 AI8115
 AI8115                          STATION DESCRIPTION
 AI8115
 AI8115'DESCRIBED BY CITY OF BALTIMORE MARYLAND 1999
 AI8115'THE STATION IS LOCATED 6.69 MILES (10.77 KM) S.E.  OF THE INNER HARBOR
 AI8115'OF BALTIMORE CITY.  THE POINT IS A SPIKE IN A CONCRETE WALK ON THE
 AI8115'SOUTH SIDE OF FORT ARMISTEAD ROAD, APPROXIMATELY 350 FT.  (106.7 M)
 AI8115'EAST OF OUTER HARBOR CROSSING RAMP.  IT IS 3.3 FT.  (1.0 M) SOUTH OF
 AI8115'THE FACE OF CURB FRONTING ON FORT ARMISTEAD ROAD, 44.6 FT.  (13.6 M)
 AI8115'S.E.  OF A STORMDRAIN MANHOLE IN THE ROAD, AND 44.5 FT.  (13.6 M) N.E.
 AI8115'OF A STREET LIGHT LOCATED BEHIND A NEARBY GUARD RAIL.
 AI8115
 AI8115                          STATION RECOVERY (2006)
 AI8115
 AI8115'RECOVERY NOTE BY GPS SALES AND SERVICES 2006
 AI8115'FOUND BY TOM AND TED OF SURVEY SERVICES OF MD, LLC
 AI8115
 AI8115                          STATION RECOVERY (2009)
 AI8115
 AI8115'RECOVERY NOTE BY GPS SALES AND SERVICES 2009
 AI8115'RECOVERED BY TED OF SURVEY SERVICES OF MD, LLC
 AI8115
 AI8115                          STATION RECOVERY (2025)
 AI8115
 AI8115'RECOVERY NOTE BY WHITMAN REQUARDT AND ASSOCIATES 2025 (AH)
 AI8115'DESCRIPTION IS ADEQUATE.  VEGETATION AND TREES NEXT TO WALK MAY LIMIT
 AI8115'SUITABILITY FOR GPS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8116 ***********************************************************************
 AI8116  DESIGNATION -  7337
 AI8116  PID         -  AI8116
 AI8116  STATE/COUNTY-  MD/C OF BALTIMORE
 AI8116  COUNTRY     -  US
 AI8116  USGS QUAD   -  CURTIS BAY (2016)
 AI8116
 AI8116                         *CURRENT SURVEY CONTROL
 AI8116  ______________________________________________________________________
 AI8116* NAD 83(2011) POSITION- 39 12 29.78992(N) 076 32 33.46363(W)   ADJUSTED
 AI8116* NAD 83(2011) ELLIP HT-   -26.446 (meters)        (06/27/12)   ADJUSTED
 AI8116* NAD 83(2011) EPOCH   -  2010.00
 AI8116* NAVD 88 ORTHO HEIGHT -     6.5   (meters)       21.    (feet) GPS OBS
 AI8116  ______________________________________________________________________
 AI8116  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8116  GEOID HEIGHT    -        -32.966 (meters)                     GEOID99
 AI8116  GEOID HEIGHT    -        -32.977 (meters)                     GEOID18
 AI8116  NAD 83(2011) X  -  1,151,675.934 (meters)                     COMP
 AI8116  NAD 83(2011) Y  - -4,812,847.555 (meters)                     COMP
 AI8116  NAD 83(2011) Z  -  4,010,243.112 (meters)                     COMP
 AI8116  LAPLACE CORR    -         -2.94  (seconds)                    DEFLEC18
 AI8116
 AI8116  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8116  Standards:
 AI8116         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8116            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8116  -------------------------------------------------------------------
 AI8116  NETWORK    0.85   1.25           0.38   0.30   0.64      0.13625821
 AI8116  -------------------------------------------------------------------
 AI8116  Click here for local accuracies and other accuracy information.
 AI8116
 AI8116.The horizontal coordinates were established by GPS observations
 AI8116.and adjusted by the National Geodetic Survey in June 2012.
 AI8116
 AI8116.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8116.been affixed to the stable North American tectonic plate. See 
 AI8116.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8116
 AI8116.The horizontal coordinates are valid at the epoch date displayed above
 AI8116.which is a decimal equivalence of Year/Month/Day.
 AI8116
 AI8116.The orthometric height was determined by GPS observations and a
 AI8116.high-resolution geoid model.
 AI8116
 AI8116.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8116.GEOID18 height accuracy estimate available here.
 AI8116
 AI8116.Click photographs - Photos may exist for this station.
 AI8116
 AI8116.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8116
 AI8116.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8116
 AI8116.The ellipsoidal height was determined by GPS observations
 AI8116.and is referenced to NAD 83.
 AI8116
 AI8116. The following values were computed from the NAD 83(2011) position.
 AI8116
 AI8116;                    North         East     Units Scale Factor Converg.
 AI8116;SPC MD       -   171,226.363   439,502.523   MT  0.99996664   +0 17 13.4
 AI8116;SPC MD       -   561,765.16  1,441,934.53   sFT  0.99996664   +0 17 13.4
 AI8116;UTM  18      - 4,341,023.074   366,810.298   MT  0.99981843   -0 58 31.1
 AI8116
 AI8116!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8116!SPC MD       -   1.00000415  x   0.99996664  =   0.99997079
 AI8116!UTM  18      -   1.00000415  x   0.99981843  =   0.99982258
 AI8116
 AI8116_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6681041023(NAD 83)
 AI8116
 AI8116                          SUPERSEDED SURVEY CONTROL
 AI8116
 AI8116  NAD 83(2007)-  39 12 29.79016(N)    076 32 33.46441(W) AD(2002.00) 0
 AI8116  ELLIP H (02/10/07)  -26.430  (m)                       GP(2002.00)    
 AI8116  ELLIP H (08/30/02)  -26.416  (m)                       GP(       ) 4 2
 AI8116  NAD 83(1991)-  39 12 29.79019(N)    076 32 33.46395(W) AD(       ) 1
 AI8116  ELLIP H (10/26/00)  -26.510  (m)                       GP(       ) 4 1
 AI8116
 AI8116.Superseded values are not recommended for survey control.
 AI8116
 AI8116.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8116.See file dsdata.pdf to determine how the superseded data were derived.
 AI8116
 AI8116_MARKER: S = SPIKE
 AI8116_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AI8116_SP_SET: STREET
 AI8116_MARK LOGO: NONE
 AI8116_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI8116_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI8116_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8116+SATELLITE: SATELLITE OBSERVATIONS - May 01, 2025
 AI8116
 AI8116  HISTORY     - Date     Condition        Report By
 AI8116  HISTORY     - 1999     MONUMENTED       MD0050
 AI8116  HISTORY     - 20060609 GOOD             GPSSS
 AI8116  HISTORY     - 20091109 GOOD             GPSSS
 AI8116  HISTORY     - 20250501 GOOD             WHIREQ
 AI8116
 AI8116                          STATION DESCRIPTION
 AI8116
 AI8116'DESCRIBED BY CITY OF BALTIMORE MARYLAND 1999
 AI8116'THE STATION IS LOCATED 6.44 MILES (10.36 KM) S.E.  OF THE INNER HARBOR
 AI8116'OF BALTIMORE CITY.  THE POINT IS A IRON BAR IN A CONCRETE RD. SURFACE
 AI8116'AT THE INTERSECTION OF FORT ARMISTEAD ROAD AND DOCK RD.  IT IS 6.5 FT
 AI8116'(2.0 M) S.W.  OF THE PC OF THE NORTH CORNER OF THE INTERSECTION
 AI8116'(FRONTING ON DOCK ROAD) , 10.0 FT.  (3.0 M) N.W.  OF A WATER METER
 AI8116'MANHOLE, AND 9.0 FT.  (2.7 M) NORTH OF ANOTHER WATER METER MANHOLE.
 AI8116
 AI8116                          STATION RECOVERY (2006)
 AI8116
 AI8116'RECOVERY NOTE BY GPS SALES AND SERVICES 2006
 AI8116'FOUND BY TOM AND TED OF SURVEY SERVICES OF MD, LLC
 AI8116
 AI8116                          STATION RECOVERY (2009)
 AI8116
 AI8116'RECOVERY NOTE BY GPS SALES AND SERVICES 2009
 AI8116'RECOVERED BY TED OF SURVEY SERVICES OF MD, LLC
 AI8116
 AI8116                          STATION RECOVERY (2025)
 AI8116
 AI8116'RECOVERY NOTE BY WHITMAN REQUARDT AND ASSOCIATES 2025 (AH)
 AI8116'DESCRIPTION IS ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3529 ***********************************************************************
 JV3529  DESIGNATION -  740 USGS
 JV3529  PID         -  JV3529
 JV3529  STATE/COUNTY-  MD/FREDERICK
 JV3529  COUNTRY     -  US
 JV3529  USGS QUAD   -  MYERSVILLE (2016)
 JV3529
 JV3529                         *CURRENT SURVEY CONTROL
 JV3529  ______________________________________________________________________
 JV3529* NAD 83(1986) POSITION- 39 32 36.4    (N) 077 31 45.8    (W)   HD_HELD2
 JV3529* NAVD 88 ORTHO HEIGHT -   225.170 (meters)      738.75  (feet) ADJUSTED
 JV3529  ______________________________________________________________________
 JV3529  GEOID HEIGHT    -        -33.149 (meters)                     GEOID18
 JV3529  DYNAMIC HEIGHT  -        225.045 (meters)      738.34  (feet) COMP
 JV3529  MODELED GRAVITY -    980,068.9   (mgal)                       NAVD 88
 JV3529
 JV3529  VERT ORDER      -  SECOND    CLASS 0
 JV3529
 JV3529.The horizontal coordinates were established by autonomous hand held GPS
 JV3529.observations and have an estimated accuracy of +/- 10 meters.
 JV3529
 JV3529.The orthometric height was determined by differential leveling and
 JV3529.adjusted by the NATIONAL GEODETIC SURVEY
 JV3529.in June 1991.
 JV3529
 JV3529.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3529.GEOID18 height accuracy estimate available here.
 JV3529
 JV3529.Click photographs - Photos may exist for this station.
 JV3529
 JV3529.The dynamic height is computed by dividing the NAVD 88
 JV3529.geopotential number by the normal gravity value computed on the
 JV3529.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3529.degrees latitude (g = 980.6199 gals.).
 JV3529
 JV3529.The modeled gravity was interpolated from observed gravity values.
 JV3529
 JV3529;                    North         East    Units  Estimated Accuracy
 JV3529;SPC MD       -   208,470.      354,493.      MT  (+/- 10 meters HH2 GPS)
 JV3529
 JV3529_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8264780141(NAD 83)
 JV3529
 JV3529                          SUPERSEDED SURVEY CONTROL
 JV3529
 JV3529  NGVD 29 (11/26/84)  225.375  (m)          739.42   (f) ADJUSTED    2 0
 JV3529
 JV3529.Superseded values are not recommended for survey control.
 JV3529
 JV3529.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3529.See file dsdata.pdf to determine how the superseded data were derived.
 JV3529
 JV3529_MARKER: DD = SURVEY DISK
 JV3529_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3529_SP_SET: BUILDING
 JV3529_STAMPING: 740 MD
 JV3529_MARK LOGO: USGS
 JV3529_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3529
 JV3529  HISTORY     - Date     Condition        Report By
 JV3529  HISTORY     - 1908     MONUMENTED       USGS
 JV3529  HISTORY     - 1942     GOOD             CGS
 JV3529
 JV3529                          STATION DESCRIPTION
 JV3529
 JV3529'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3529'1.7 MI NE FROM ELLERTON.
 JV3529'1.7 MILES NORTHEAST ALONG STATE HIGHWAY 17 FROM THE STEEL BRIDGE
 JV3529'AT ELLERTON, FREDERICK COUNTY, AT THE GROSSNICKLE CHURCH, 53.6
 JV3529'FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, IN THE SOUTHEAST
 JV3529'FACE OF THE CHURCH AT THE SOUTH CORNER, AND 2.5 FEET ABOVE THE
 JV3529'GROUND.  A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK,
 JV3529'STAMPED 740 MD AND SET VERTICALLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1827 ***********************************************************************
 JV1827  DESIGNATION -  779 RESET
 JV1827  PID         -  JV1827
 JV1827  STATE/COUNTY-  MD/FREDERICK
 JV1827  COUNTRY     -  US
 JV1827  USGS QUAD   -  BLUE RIDGE SUMMIT (2019)
 JV1827
 JV1827                         *CURRENT SURVEY CONTROL
 JV1827  ______________________________________________________________________
 JV1827* NAD 83(1986) POSITION- 39 39 04.     (N) 077 26 08.     (W)   SCALED
 JV1827* NAVD 88 ORTHO HEIGHT -   238.27  (meters)      781.7   (feet) RESET
 JV1827  ______________________________________________________________________
 JV1827  GEOID HEIGHT    -        -33.212 (meters)                     GEOID18
 JV1827  VERT ORDER      -  THIRD
 JV1827
 JV1827.The horizontal coordinates were scaled from a map and have
 JV1827.an estimated accuracy of +/- 6 seconds.
 JV1827
 JV1827.The orthometric height was computed from unverified reset data.
 JV1827
 JV1827.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1827.GEOID18 height accuracy estimate available here.
 JV1827
 JV1827.Click photographs - Photos may exist for this station.
 JV1827
 JV1827;                    North         East    Units  Estimated Accuracy
 JV1827;SPC MD       -   220,380.      362,620.      MT  (+/- 180 meters Scaled)
 JV1827
 JV1827_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ910918(NAD 83)
 JV1827
 JV1827                          SUPERSEDED SURVEY CONTROL
 JV1827
 JV1827  NGVD 29 (11/18/05)  237.953  (m)          780.68   (f) SUPERSEDED  3 0
 JV1827  NGVD 29 (??/??/92)  237.957  (m)          780.70   (f) ADJ UNCH    2 0
 JV1827
 JV1827.Superseded values are not recommended for survey control.
 JV1827
 JV1827.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1827.See file dsdata.pdf to determine how the superseded data were derived.
 JV1827
 JV1827_MARKER: DD = SURVEY DISK
 JV1827_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1827_SP_SET: BRIDGE
 JV1827_STAMPING: 779 RESET 1937
 JV1827_MARK LOGO: USGS
 JV1827_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1827
 JV1827  HISTORY     - Date     Condition        Report By
 JV1827  HISTORY     - 1937     MONUMENTED       WMRR
 JV1827  HISTORY     - 20070530 MARK NOT FOUND   GEOCAC
 JV1827
 JV1827                          STATION DESCRIPTION
 JV1827
 JV1827'DESCRIBED BY WESTERN MARYLAND RAILROAD 1937
 JV1827'2.6 MI W FROM THURMONT.
 JV1827'ABOUT 2.6 MILES WEST ALONG THE WESTERN MARYLAND RAILWAY FROM THE
 JV1827'U.S. HIGHWAY 15 OVERPASS AT THURMONT, FREDERICK COUNTY, AT
 JV1827'BRIDGE 619 OVER OWENS CREEK, AND IN THE TOP OF THE SOUTH END
 JV1827'OF THE WEST BACK WALL.  A UNITED STATES GEOLOGICAL SURVEY
 JV1827'STANDARD DISK, STAMPED 779 RESET 1937.
 JV1827
 JV1827                          STATION RECOVERY (2007)
 JV1827
 JV1827'RECOVERY NOTE BY GEOCACHING 2007
 JV1827'A DRILL HOLE AND IMPRESSION OF A DISK WAS FOUND AT THE DESCRIBED
 JV1827'LOCATION. THE DISK HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0316 ***********************************************************************
 JV0316  DESIGNATION -  78
 JV0316  PID         -  JV0316
 JV0316  STATE/COUNTY-  MD/KENT
 JV0316  COUNTRY     -  US
 JV0316  USGS QUAD   -  ROCK HALL (2016)
 JV0316
 JV0316                         *CURRENT SURVEY CONTROL
 JV0316  ______________________________________________________________________
 JV0316* NAD 83(1986) POSITION- 39 13 19.2    (N) 076 10 19.3    (W)   HD_HELD2
 JV0316* NAVD 88 ORTHO HEIGHT -    23.702 (meters)       77.76  (feet) ADJUSTED
 JV0316  ______________________________________________________________________
 JV0316  GEOID HEIGHT    -        -33.293 (meters)                     GEOID18
 JV0316  DYNAMIC HEIGHT  -         23.690 (meters)       77.72  (feet) COMP
 JV0316  MODELED GRAVITY -    980,111.6   (mgal)                       NAVD 88
 JV0316
 JV0316  VERT ORDER      -  SECOND    CLASS 0
 JV0316
 JV0316.The horizontal coordinates were established by autonomous hand held GPS
 JV0316.observations and have an estimated accuracy of +/- 10 meters.
 JV0316
 JV0316.The orthometric height was determined by differential leveling and
 JV0316.adjusted by the NATIONAL GEODETIC SURVEY
 JV0316.in June 1991.
 JV0316
 JV0316.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0316.GEOID18 height accuracy estimate available here.
 JV0316
 JV0316.Click photographs - Photos may exist for this station.
 JV0316
 JV0316.The dynamic height is computed by dividing the NAVD 88
 JV0316.geopotential number by the normal gravity value computed on the
 JV0316.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0316.degrees latitude (g = 980.6199 gals.).
 JV0316
 JV0316.The modeled gravity was interpolated from observed gravity values.
 JV0316
 JV0316;                    North         East    Units  Estimated Accuracy
 JV0316;SPC MD       -   172,975.      471,496.      MT  (+/- 10 meters HH2 GPS)
 JV0316
 JV0316_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9882842066(NAD 83)
 JV0316
 JV0316                          SUPERSEDED SURVEY CONTROL
 JV0316
 JV0316  NGVD 29 (11/26/84)   23.945  (m)           78.56   (f) ADJUSTED    2 0
 JV0316
 JV0316.Superseded values are not recommended for survey control.
 JV0316
 JV0316.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0316.See file dsdata.pdf to determine how the superseded data were derived.
 JV0316
 JV0316_MARKER: DB = BENCH MARK DISK
 JV0316_SETTING: 80 = SET IN A BOULDER
 JV0316_STAMPING: 78 BALTO MARYLAND
 JV0316_MARK LOGO: USGS
 JV0316_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0316+STABILITY: SURFACE MOTION
 JV0316_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0316+SATELLITE: SATELLITE OBSERVATIONS - January 09, 2014
 JV0316
 JV0316  HISTORY     - Date     Condition        Report By
 JV0316  HISTORY     - 1899     MONUMENTED       USGS
 JV0316  HISTORY     - 1964     GOOD             CGS
 JV0316  HISTORY     - 1980     GOOD             LOCSUR
 JV0316  HISTORY     - 19901212 GOOD             USPSQD
 JV0316  HISTORY     - 20051211 GOOD             USPSQD
 JV0316  HISTORY     - 20140109 GOOD             ARCSHE
 JV0316
 JV0316                          STATION DESCRIPTION
 JV0316
 JV0316'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0316'AT FAIRLEE.
 JV0316'AT FAIRLEE, 172 FEET SOUTHEAST OF THE INTERSECTION OF STATE
 JV0316'HIGHWAY 298 AND A CUTOFF ROAD RUNNING SOUTHEASTERLY TO OLD STATE
 JV0316'HIGHWAY NO. 20, 0.10 MILE NORTHWEST OF SALEM METHODIST CHURCH,
 JV0316'19.7 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 26.6 FEET
 JV0316'SOUTHEAST OF POLE C AND PBC 5, 37.7 FEET SOUTHWEST OF POLE CEL
 JV0316'AND P CO., AND SET VERTICALLY IN THE NORTH FACE OF A LARGE
 JV0316'BOULDER.
 JV0316
 JV0316                          STATION RECOVERY (1980)
 JV0316
 JV0316'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1980
 JV0316'RECOVERED IN GOOD CONDITION.
 JV0316
 JV0316                          STATION RECOVERY (1990)
 JV0316
 JV0316'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0316'RECOVERED IN GOOD CONDITION.
 JV0316
 JV0316                          STATION RECOVERY (2005)
 JV0316
 JV0316'RECOVERY NOTE BY US POWER SQUADRON 2005 (DU)
 JV0316'RECOVERED IN GOOD CONDITION.
 JV0316
 JV0316                          STATION RECOVERY (2014)
 JV0316
 JV0316'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0316'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0182 ***********************************************************************
 JV0182  DESIGNATION -  78 BORR
 JV0182  PID         -  JV0182
 JV0182  STATE/COUNTY-  MD/HARFORD
 JV0182  COUNTRY     -  US
 JV0182  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0182
 JV0182                         *CURRENT SURVEY CONTROL
 JV0182  ______________________________________________________________________
 JV0182* NAD 83(1986) POSITION- 39 33 51.     (N) 076 05 53.     (W)   SCALED
 JV0182* NAVD 88 ORTHO HEIGHT -    28.408 (meters)       93.20  (feet) ADJUSTED
 JV0182  ______________________________________________________________________
 JV0182  GEOID HEIGHT    -        -33.109 (meters)                     GEOID18
 JV0182  DYNAMIC HEIGHT  -         28.393 (meters)       93.15  (feet) COMP
 JV0182  MODELED GRAVITY -    980,128.6   (mgal)                       NAVD 88
 JV0182
 JV0182  VERT ORDER      -  FIRST     CLASS I
 JV0182
 JV0182.The horizontal coordinates were scaled from a map and have
 JV0182.an estimated accuracy of +/- 6 seconds.
 JV0182
 JV0182.The orthometric height was determined by differential leveling and
 JV0182.adjusted by the NATIONAL GEODETIC SURVEY
 JV0182.in June 1991.
 JV0182
 JV0182.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0182.GEOID18 height accuracy estimate available here.
 JV0182
 JV0182.Click photographs - Photos may exist for this station.
 JV0182
 JV0182.The dynamic height is computed by dividing the NAVD 88
 JV0182.geopotential number by the normal gravity value computed on the
 JV0182.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0182.degrees latitude (g = 980.6199 gals.).
 JV0182
 JV0182.The modeled gravity was interpolated from observed gravity values.
 JV0182
 JV0182;                    North         East    Units  Estimated Accuracy
 JV0182;SPC MD       -   211,020.      477,510.      MT  (+/- 180 meters Scaled)
 JV0182
 JV0182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ056799(NAD 83)
 JV0182
 JV0182                          SUPERSEDED SURVEY CONTROL
 JV0182
 JV0182  NGVD 29 (11/26/84)   28.648  (m)           93.99   (f) ADJUSTED    1 1
 JV0182
 JV0182.Superseded values are not recommended for survey control.
 JV0182
 JV0182.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0182.See file dsdata.pdf to determine how the superseded data were derived.
 JV0182
 JV0182_MARKER: B = BOLT
 JV0182_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0182_SP_SET: BRIDGE
 JV0182_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0182
 JV0182  HISTORY     - Date     Condition        Report By
 JV0182  HISTORY     - UNK      MONUMENTED       BORR
 JV0182  HISTORY     - 1971     GOOD             NGS
 JV0182
 JV0182                          STATION DESCRIPTION
 JV0182
 JV0182'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0182'1.8 MI W FROM AIKIN.
 JV0182'ABOUT 1.85 MILES WEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0182'FROM THE U.S. HIGHWAY 222 OVERPASS OVER THE TRACKS AT AIKIN, SET
 JV0182'ON THE TOP OF THE SOUTH END OF THE WEST CONCRETE ABUTMENT OF
 JV0182'THE LARGE BALTIMORE AND OHIO RAILROAD BRIDGE OVER THE SUSQUEHANNA
 JV0182'RIVER, 25 FEET SOUTH OF THE SOUTH RAIL OF THE MAIN TRACK, 1.3
 JV0182'FEET NORTH OF THE SOUTH END OF THE ABUTMENT, 42.6 FEET SOUTH OF
 JV0182'AND ACROSS THE TRACKS FROM BENCH MARK V 118 DESCRIBED, ABOUT
 JV0182'1 1/2 FEET BELOW THE LEVEL OF THE TRACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2756 ***********************************************************************
 JV2756  DESIGNATION -  782 WSSC
 JV2756  PID         -  JV2756
 JV2756  STATE/COUNTY-  MD/MONTGOMERY
 JV2756  COUNTRY     -  US
 JV2756  USGS QUAD   -  KENSINGTON (2016)
 JV2756
 JV2756                         *CURRENT SURVEY CONTROL
 JV2756  ______________________________________________________________________
 JV2756* NAD 83(1986) POSITION- 39 00 59.     (N) 077 00 59.     (W)   SCALED
 JV2756* NAVD 88 ORTHO HEIGHT -   103.221 (meters)      338.65  (feet) ADJUSTED
 JV2756  ______________________________________________________________________
 JV2756  GEOID HEIGHT    -        -31.974 (meters)                     GEOID18
 JV2756  DYNAMIC HEIGHT  -        103.165 (meters)      338.47  (feet) COMP
 JV2756  MODELED GRAVITY -    980,086.2   (mgal)                       NAVD 88
 JV2756
 JV2756  VERT ORDER      -  SECOND    CLASS 0
 JV2756
 JV2756.The horizontal coordinates were scaled from a map and have
 JV2756.an estimated accuracy of +/- 6 seconds.
 JV2756
 JV2756.The orthometric height was determined by differential leveling and
 JV2756.adjusted by the NATIONAL GEODETIC SURVEY
 JV2756.in June 1991.
 JV2756
 JV2756.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2756.GEOID18 height accuracy estimate available here.
 JV2756
 JV2756.Click photographs - Photos may exist for this station.
 JV2756
 JV2756.The dynamic height is computed by dividing the NAVD 88
 JV2756.geopotential number by the normal gravity value computed on the
 JV2756.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2756.degrees latitude (g = 980.6199 gals.).
 JV2756
 JV2756.The modeled gravity was interpolated from observed gravity values.
 JV2756
 JV2756;                    North         East    Units  Estimated Accuracy
 JV2756;SPC MD       -   149,830.      398,580.      MT  (+/- 180 meters Scaled)
 JV2756
 JV2756_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ254205(NAD 83)
 JV2756
 JV2756                          SUPERSEDED SURVEY CONTROL
 JV2756
 JV2756  NGVD 29 (11/26/84)  103.433  (m)          339.35   (f) ADJUSTED    2 0
 JV2756
 JV2756.Superseded values are not recommended for survey control.
 JV2756
 JV2756.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2756.See file dsdata.pdf to determine how the superseded data were derived.
 JV2756
 JV2756_MARKER: Z = SEE DESCRIPTION
 JV2756_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2756_SP_SET: CULVERT
 JV2756_STAMPING: WSSC RM 782
 JV2756_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2756
 JV2756  HISTORY     - Date     Condition        Report By
 JV2756  HISTORY     - UNK      MONUMENTED       WSSC
 JV2756  HISTORY     - 1952     GOOD             CGS
 JV2756  HISTORY     - 1958     GOOD             CGS
 JV2756
 JV2756                          STATION DESCRIPTION
 JV2756
 JV2756'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV2756'AT FOUR CORNERS.
 JV2756'AT FOUR CORNERS, MONTGOMERY COUNTY, 30 YARDS SOUTH ALONG COLESVILLER
 JV2756'ROAD, U.S. HIGHWAY 29 FROM THE INTERSECTION OF FOREST GLEN
 JV2756'ROAD (STATE HIGHWAY 192), ON THE WEST SIDE OF THE ROAD AND
 JV2756'IN THE CENTER OF THE TOP OF A CULVERT HEAD WALL.  A WASHINGTON
 JV2756'SUBURBAN SANITARY DISTRICT LAG SCREW AND WASHER, STAMPED WSSC
 JV2756'BM 782.
 JV2756
 JV2756                          STATION RECOVERY (1958)
 JV2756
 JV2756'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2756'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2326 ***********************************************************************
 HV2326  DESIGNATION -  787 WSSC
 HV2326  PID         -  HV2326
 HV2326  STATE/COUNTY-  MD/MONTGOMERY
 HV2326  COUNTRY     -  US
 HV2326  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2326
 HV2326                         *CURRENT SURVEY CONTROL
 HV2326  ______________________________________________________________________
 HV2326* NAD 83(1986) POSITION- 38 59 53.     (N) 077 01 36.     (W)   SCALED
 HV2326* NAVD 88 ORTHO HEIGHT -   107.56  (+/-2cm)      352.9   (feet) VERTCON3
 HV2326  ______________________________________________________________________
 HV2326  GEOID HEIGHT    -        -31.970 (meters)                     GEOID18
 HV2326  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV2326
 HV2326.The horizontal coordinates were scaled from a map and have
 HV2326.an estimated accuracy of +/- 6 seconds.
 HV2326
 HV2326.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2326.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2326
 HV2326.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2326.GEOID18 height accuracy estimate available here.
 HV2326
 HV2326.The vertical order pertains to the NGVD 29 superseded value.
 HV2326
 HV2326.Click photographs - Photos may exist for this station.
 HV2326
 HV2326;                    North         East    Units  Estimated Accuracy
 HV2326;SPC MD       -   147,790.      397,690.      MT  (+/- 180 meters Scaled)
 HV2326
 HV2326_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ244185(NAD 83)
 HV2326
 HV2326                          SUPERSEDED SURVEY CONTROL
 HV2326
 HV2326  NGVD 29 (11/26/84)  107.774  (m)          353.59   (f) ADJUSTED    2 0
 HV2326
 HV2326.Superseded values are not recommended for survey control.
 HV2326
 HV2326.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2326.See file dsdata.pdf to determine how the superseded data were derived.
 HV2326
 HV2326_MARKER: Z = SEE DESCRIPTION
 HV2326_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2326_SP_SET: BUILDING
 HV2326_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2326
 HV2326  HISTORY     - Date     Condition        Report By
 HV2326  HISTORY     - UNK      MONUMENTED       WSSC
 HV2326  HISTORY     - 1951     MARK NOT FOUND   CGS
 HV2326
 HV2326                          STATION DESCRIPTION
 HV2326
 HV2326'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2326'AT SILVER SPRING.
 HV2326'AT SILVER SPRING, MONTGOMERY COUNTY, ON COLESVILLE ROAD (STATE
 HV2326'HIGHWAY 29), 1000 FEET NORTHEAST OF GEORGIA AVENUE, AT THE WEST
 HV2326'CORNER OF A BRICK HOUSE ON THE SOUTHEAST SIDE OF THE ROAD, AND
 HV2326'IN THE SOUTHWEST FACE.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV2326'LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3602 ***********************************************************************
 JU3602  DESIGNATION -  8
 JU3602  PID         -  JU3602
 JU3602  STATE/COUNTY-  MD/CECIL
 JU3602  COUNTRY     -  US
 JU3602  USGS QUAD   -  EARLEVILLE (2016)
 JU3602
 JU3602                         *CURRENT SURVEY CONTROL
 JU3602  ______________________________________________________________________
 JU3602* NAD 83(1991) POSITION- 39 27 46.65528(N) 075 57 59.27558(W)   ADJUSTED
 JU3602* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3602  ______________________________________________________________________
 JU3602  GEOID HEIGHT    -        -33.359 (meters)                     GEOID18
 JU3602  LAPLACE CORR    -         -0.70  (seconds)                    DEFLEC18
 JU3602  HORZ ORDER      -  THIRD
 JU3602
 JU3602.The horizontal coordinates were established by classical geodetic methods
 JU3602.and adjusted by the National Geodetic Survey in January 1992.
 JU3602
 JU3602.The orthometric height was scaled from a topographic map.
 JU3602
 JU3602.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3602.GEOID18 height accuracy estimate available here.
 JU3602
 JU3602.Click photographs - Photos may exist for this station.
 JU3602
 JU3602.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3602
 JU3602. The following values were computed from the NAD 83(1991) position.
 JU3602
 JU3602;                    North         East     Units Scale Factor Converg.
 JU3602;SPC MD       -   199,906.008   488,943.312   MT  1.00000229   +0 38 55.3
 JU3602;SPC MD       -   655,858.29  1,604,141.52   sFT  1.00000229   +0 38 55.3
 JU3602;UTM  18      - 4,368,599.473   416,859.400   MT  0.99968510   -0 36 51.5
 JU3602
 JU3602!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3602!SPC MD       -   1.00000511  x   1.00000229  =   1.00000740
 JU3602!UTM  18      -   1.00000511  x   0.99968510  =   0.99969021
 JU3602
 JU3602:                Primary Azimuth Mark                     Grid Az
 JU3602:SPC MD       -  9 2                                      214 14 18.6
 JU3602:UTM  18      -  9 2                                      215 30 05.4
 JU3602
 JU3602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1685968599(NAD 83)
 JU3602
 JU3602|---------------------------------------------------------------------|
 JU3602| PID    Reference Object                     Distance      Geod. Az  |
 JU3602|                                                           dddmmss.s |
 JU3602| JU3578 9 2                                 APPROX. 0.9 KM 2145313.9 |
 JU3602|---------------------------------------------------------------------|
 JU3602
 JU3602                          SUPERSEDED SURVEY CONTROL
 JU3602
 JU3602  NAD 83(1986)-  39 27 46.64765(N)    075 57 59.28196(W) AD(       ) 3
 JU3602  NAD 27      -  39 27 46.25100(N)    075 58 00.49300(W) AD(       ) 3
 JU3602
 JU3602.Superseded values are not recommended for survey control.
 JU3602
 JU3602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3602.See file dsdata.pdf to determine how the superseded data were derived.
 JU3602
 JU3602_MARKER: DD = SURVEY DISK
 JU3602_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3602_STAMPING: NO. 8
 JU3602_MARK LOGO: USACE
 JU3602_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3602+STABILITY: SURFACE MOTION
 JU3602
 JU3602  HISTORY     - Date     Condition        Report By
 JU3602  HISTORY     - 1937     MONUMENTED       USACE
 JU3602  HISTORY     - 1938     GOOD             CGS
 JU3602
 JU3602                          STATION DESCRIPTION
 JU3602
 JU3602'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3602'LOCATED ON THE S SIDE OF ELK RIVER ON ARNOLD POINT AT THE
 JU3602'MOUTH OF CABIN JOHN CREEK.  THE STATION IS MARKED BY A
 JU3602'STANDARD U.S.E.D. DISK (STAMPED NO.8) SET ATOP A 6-INCH SQUARE
 JU3602'CONCRETE POST AND PROJECTS 1 INCH ABOVE GROUND.
 JU3602
 JU3602                          STATION RECOVERY (1938)
 JU3602
 JU3602'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JU3602'STATION WAS RECOVERED IN GOOD CONDITION.  THE
 JU3602'PRESENT DESCRIPTION IS ADEQUATE.  NO REFERENCE MARKS WERE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2250 ***********************************************************************
 HU2250  DESIGNATION -  8 KEM
 HU2250  PID         -  HU2250
 HU2250  STATE/COUNTY-  MD/WICOMICO
 HU2250  COUNTRY     -  US
 HU2250  USGS QUAD   -  WETIPQUIN (2016)
 HU2250
 HU2250                         *CURRENT SURVEY CONTROL
 HU2250  ______________________________________________________________________
 HU2250* NAD 83(1986) POSITION- 38 21 34.4    (N) 075 49 42.4    (W)   HD_HELD2
 HU2250* NAVD 88 ORTHO HEIGHT -     6.413 (meters)       21.04  (feet) ADJUSTED
 HU2250  ______________________________________________________________________
 HU2250  GEOID HEIGHT    -        -35.659 (meters)                     GEOID18
 HU2250  DYNAMIC HEIGHT  -          6.408 (meters)       21.02  (feet) COMP
 HU2250  MODELED GRAVITY -    980,003.4   (mgal)                       NAVD 88
 HU2250
 HU2250  VERT ORDER      -  SECOND    CLASS I
 HU2250
 HU2250.The horizontal coordinates were established by autonomous hand held GPS
 HU2250.observations and have an estimated accuracy of +/- 10 meters.
 HU2250
 HU2250.The orthometric height was determined by differential leveling and
 HU2250.adjusted by the NATIONAL GEODETIC SURVEY
 HU2250.in June 1991.
 HU2250
 HU2250.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2250.GEOID18 height accuracy estimate available here.
 HU2250
 HU2250.Click photographs - Photos may exist for this station.
 HU2250
 HU2250.The dynamic height is computed by dividing the NAVD 88
 HU2250.geopotential number by the normal gravity value computed on the
 HU2250.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2250.degrees latitude (g = 980.6199 gals.).
 HU2250
 HU2250.The modeled gravity was interpolated from observed gravity values.
 HU2250
 HU2250;                    North         East    Units  Estimated Accuracy
 HU2250;SPC MD       -    77,571.      502,392.      MT  (+/- 10 meters HH2 GPS)
 HU2250
 HU2250_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2762046034(NAD 83)
 HU2250
 HU2250                          SUPERSEDED SURVEY CONTROL
 HU2250
 HU2250  NGVD 29 (06/12/91)    6.666  (m)           21.87   (f) ADJUSTED    2 1
 HU2250
 HU2250.Superseded values are not recommended for survey control.
 HU2250
 HU2250.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2250.See file dsdata.pdf to determine how the superseded data were derived.
 HU2250
 HU2250_MARKER: DB = BENCH MARK DISK
 HU2250_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2250_STAMPING: 8 KEM 1977
 HU2250_MARK LOGO: USGS
 HU2250_PROJECTION: RECESSED 9 CENTIMETERS
 HU2250_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2250_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2250+STABILITY: SURFACE MOTION
 HU2250_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2250+SATELLITE: SATELLITE OBSERVATIONS - May 15, 2019
 HU2250
 HU2250  HISTORY     - Date     Condition        Report By
 HU2250  HISTORY     - 1977     MONUMENTED       USGS
 HU2250  HISTORY     - 19900301 GOOD             NGS
 HU2250  HISTORY     - 20190515 GOOD             PROFLN
 HU2250
 HU2250                          STATION DESCRIPTION
 HU2250
 HU2250'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2250'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2250'OFFICE IN QUANTICO, THENCE 5.0 KM (3.11 MI) WESTERLY ALONG STATE
 HU2250'HIGHWAY 349, THENCE 3.4 KM (2.11 MI) NORTHWESTERLY ALONG ROYAL OAK
 HU2250'ROAD, 19.0 M (62.34 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF A HOUSE,
 HU2250'13.5 M (44.29 FT) NORTH OF THE CENTER OF THE ROAD, 5.0 M (16.40 FT)
 HU2250'EAST OF THE CENTER OF A DRIVEWAY, 0.8 M (2.62 FT) SOUTH OF UTILITY
 HU2250'POLE NUMBER Y212, 0.6 M (1.97 FT) ABOVE THE LEVEL OF THE ROAD, AND IN
 HU2250'A CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2250
 HU2250                          STATION RECOVERY (2019)
 HU2250
 HU2250'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2250'THE MARK IS 51.5 FT (15.7 M) NORTHWEST OF A PHONE PEDESTAL, 46 FT
 HU2250'(14.0 M) NORTH OF THE ROAD, 41 FT (12.5 M) WEST OF THE WEST LINE
 HU2250'EXTENDED OF HOUSE 22692 - 1-STORY FRAME, 2.5 FT (0.8 M) SOUTH OF POLE
 HU2250'712-59-13.  THE MARK IS 0.3 FT (9 CM) BELOW SURROUNDING GROUND BUT
 HU2250'LEFT EXPOSED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1188 ***********************************************************************
 JV1188  DESIGNATION -  8 PRR
 JV1188  PID         -  JV1188
 JV1188  STATE/COUNTY-  MD/BALTIMORE
 JV1188  COUNTRY     -  US
 JV1188  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1188
 JV1188                         *CURRENT SURVEY CONTROL
 JV1188  ______________________________________________________________________
 JV1188* NAD 83(1986) POSITION- 39 22 56.     (N) 076 38 36.     (W)   SCALED
 JV1188* NAVD 88 ORTHO HEIGHT -    70.084 (meters)      229.93  (feet) ADJUSTED
 JV1188  ______________________________________________________________________
 JV1188  GEOID HEIGHT    -        -32.503 (meters)                     GEOID18
 JV1188  DYNAMIC HEIGHT  -         70.047 (meters)      229.81  (feet) COMP
 JV1188  MODELED GRAVITY -    980,098.9   (mgal)                       NAVD 88
 JV1188
 JV1188  VERT ORDER      -  SECOND    CLASS 0
 JV1188
 JV1188.The horizontal coordinates were scaled from a map and have
 JV1188.an estimated accuracy of +/- 6 seconds.
 JV1188
 JV1188.The orthometric height was determined by differential leveling and
 JV1188.adjusted by the NATIONAL GEODETIC SURVEY
 JV1188.in June 1991.
 JV1188
 JV1188.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1188.GEOID18 height accuracy estimate available here.
 JV1188
 JV1188.Click photographs - Photos may exist for this station.
 JV1188
 JV1188.The dynamic height is computed by dividing the NAVD 88
 JV1188.geopotential number by the normal gravity value computed on the
 JV1188.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1188.degrees latitude (g = 980.6199 gals.).
 JV1188
 JV1188.The modeled gravity was interpolated from observed gravity values.
 JV1188
 JV1188;                    North         East    Units  Estimated Accuracy
 JV1188;SPC MD       -   190,500.      430,730.      MT  (+/- 180 meters Scaled)
 JV1188
 JV1188_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ584604(NAD 83)
 JV1188
 JV1188                          SUPERSEDED SURVEY CONTROL
 JV1188
 JV1188  NGVD 29 (11/26/84)   70.311  (m)          230.68   (f) ADJUSTED    2 0
 JV1188
 JV1188.Superseded values are not recommended for survey control.
 JV1188
 JV1188.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1188.See file dsdata.pdf to determine how the superseded data were derived.
 JV1188
 JV1188_MARKER: B = BOLT
 JV1188_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1188_SP_SET: BRIDGE
 JV1188_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1188
 JV1188  HISTORY     - Date     Condition        Report By
 JV1188  HISTORY     - UNK      MONUMENTED       PRR
 JV1188  HISTORY     - 1942     GOOD             CGS
 JV1188
 JV1188                          STATION DESCRIPTION
 JV1188
 JV1188'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1188'0.6 MI S FROM LAKE.
 JV1188'0.6 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV1188'AT LAKE, BALTIMORE COUNTY, ABOUT 840 FEET NORTH OF MILEPOST 7,
 JV1188'IN THE TOP OF THE SOUTHWEST CORNER SEAT OF BRIDGE 7.15, AND 9
 JV1188'FEET WEST OF THE CENTERLINE OF THE WEST TRACK.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7016 ***********************************************************************
 JV7016  DESIGNATION -  800 RESET
 JV7016  PID         -  JV7016
 JV7016  STATE/COUNTY-  MD/WASHINGTON
 JV7016  COUNTRY     -  US
 JV7016  USGS QUAD   -  SMITHSBURG (2016)
 JV7016
 JV7016                         *CURRENT SURVEY CONTROL
 JV7016  ______________________________________________________________________
 JV7016* NAD 83(1986) POSITION- 39 39 09.2    (N) 077 34 26.3    (W)   HD_HELD2
 JV7016* NAVD 88 ORTHO HEIGHT -   244.42  (meters)      801.9   (feet) RESET
 JV7016  ______________________________________________________________________
 JV7016  GEOID HEIGHT    -        -33.696 (meters)                     GEOID18
 JV7016  VERT ORDER      -  THIRD
 JV7016
 JV7016.The horizontal coordinates were established by autonomous hand held GPS
 JV7016.observations and have an estimated accuracy of +/- 10 meters.
 JV7016
 JV7016.The orthometric height was computed from unverified reset data.
 JV7016
 JV7016.No vertical observational check was made to the station.
 JV7016
 JV7016.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7016.GEOID18 height accuracy estimate available here.
 JV7016
 JV7016.Click photographs - Photos may exist for this station.
 JV7016
 JV7016;                    North         East    Units  Estimated Accuracy
 JV7016;SPC MD       -   220,608.      350,737.      MT  (+/- 10 meters HH2 GPS)
 JV7016
 JV7016_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7916392362(NAD 83)
 JV7016
 JV7016                          SUPERSEDED SURVEY CONTROL
 JV7016
 JV7016  NGVD 29 (11/18/05)  244.60   (m)          802.5    (f) RESET       3  
 JV7016
 JV7016.Superseded values are not recommended for survey control.
 JV7016
 JV7016.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7016.See file dsdata.pdf to determine how the superseded data were derived.
 JV7016
 JV7016_MARKER: DV = VERTICAL CONTROL DISK
 JV7016_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV7016_SP_SET: BUILDING WALL
 JV7016_STAMPING: 800 MD USGS RESET 1990
 JV7016_MARK LOGO: NGS
 JV7016_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV7016_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7016+STABILITY: SURFACE MOTION
 JV7016
 JV7016  HISTORY     - Date     Condition        Report By
 JV7016  HISTORY     - 1992     MONUMENTED       MDSHA
 JV7016  HISTORY     - 20080325 GOOD             GEOCAC
 JV7016
 JV7016                          STATION DESCRIPTION
 JV7016
 JV7016'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JV7016'THE MARKER IS LOCATED IN THE SOUTH PART OF SMITHSBURG AND NEAR A
 JV7016'POINT WHERE MAPLE AVENUE CROSSES A RAILROAD TRACKS.  IT IS ON
 JV7016'PROPERTY OWNED BY THE SMITHSBURG EMERGENCY MEDICAL SERVICE.  TO REACH
 JV7016'FROM THE POST OFFICE IN SMITHSBURG, GO WEST ON STATE HIGHWAY 66
 JV7016'(WATER STREET) FOR 0.25 MILE (0.40 KM) TO MAPLE AVENUE.  TURN LEFT
 JV7016'AND GO SOUTH ON MAPLE AVENUE FOR 0.1 MI (0.2 KM) TO THE MARKER ON THE
 JV7016'RIGHT, SET VERTICALLY IN THE EAST FACE AND NEAR THE SOUTHEAST CORNER
 JV7016'OF THE SMITHSBURG EMERGENCY MEDICAL SERVICES BUILDING.  IT IS 84.5 FT
 JV7016'(25.8 M) SOUTHWEST OF THE CENTER OF MAPLE AVENUE, 75.5 FT (23.0 M)
 JV7016'NORTHWEST OF THE CENTER OF THE WESTERN MARYLAND RAILROAD TRACKS, 38.5
 JV7016'FT (11.7 M) NORTHWEST OF A POWERLINE POLE NUMBERED H2178, 54 FT (16.5
 JV7016'M) SOUTHWEST OF A METAL FLAGPOLE AND 1.4 FT (0.4 M) NORTHWEST OF THE
 JV7016'MOST SOUTHEAST CORNER OF THE BUILDING, 1.2 FT (0.4 M) ABOVE THE
 JV7016'GROUND LEVEL.
 JV7016
 JV7016                          STATION RECOVERY (2008)
 JV7016
 JV7016'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV7016'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6561 ***********************************************************************
 HV6561  DESIGNATION -  8000 YARD F RNG TRIAL
 HV6561  PID         -  HV6561
 HV6561  STATE/COUNTY-  MD/ST MARYS
 HV6561  COUNTRY     -  US
 HV6561  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6561
 HV6561                         *CURRENT SURVEY CONTROL
 HV6561  ______________________________________________________________________
 HV6561* NAD 83(1993) POSITION- 38 06 56.52375(N) 076 25 39.12596(W)   ADJUSTED
 HV6561* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6561  ______________________________________________________________________
 HV6561  GEOID HEIGHT    -        -34.881 (meters)                     GEOID18
 HV6561  LAPLACE CORR    -         -6.13  (seconds)                    DEFLEC18
 HV6561  HORZ ORDER      -  THIRD
 HV6561
 HV6561.The horizontal coordinates were established by classical geodetic methods
 HV6561.and adjusted by the National Geodetic Survey in November 1994.
 HV6561
 HV6561.The orthometric height was scaled from a topographic map.
 HV6561
 HV6561.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6561.GEOID18 height accuracy estimate available here.
 HV6561
 HV6561.Click photographs - Photos may exist for this station.
 HV6561
 HV6561.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6561
 HV6561. The following values were computed from the NAD 83(1993) position.
 HV6561
 HV6561;                    North         East     Units Scale Factor Converg.
 HV6561;SPC MD       -    50,002.643   450,203.447   MT  1.00003717   +0 21 33.5
 HV6561;SPC MD       -   164,050.34  1,477,042.48   sFT  1.00003717   +0 21 33.5
 HV6561;SPC VA S     - 1,199,803.171 3,681,734.301   MT  1.00003060   +1 15 28.2
 HV6561;SPC VA S     - 3,936,354.24 12,079,156.62   sFT  1.00003060   +1 15 28.2
 HV6561;UTM  18      - 4,219,614.788   374,860.300   MT  0.99979287   -0 52 52.5
 HV6561
 HV6561!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6561!SPC MD       -   1.00000552  x   1.00003717  =   1.00004269
 HV6561!SPC VA S     -   1.00000552  x   1.00003060  =   1.00003612
 HV6561!UTM  18      -   1.00000552  x   0.99979287  =   0.99979839
 HV6561
 HV6561:                Primary Azimuth Mark                     Grid Az
 HV6561:SPC MD       -  ST GEORGE 5                              249 17 00.8
 HV6561:SPC VA S     -  ST GEORGE 5                              248 23 06.1
 HV6561:UTM  18      -  ST GEORGE 5                              250 31 26.8
 HV6561
 HV6561_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7486019614(NAD 83)
 HV6561
 HV6561|---------------------------------------------------------------------|
 HV6561| PID    Reference Object                     Distance      Geod. Az  |
 HV6561|                                                           dddmmss.s |
 HV6561| HV6549 ST GEORGE 5                         APPROX. 4.4 KM 2493834.3 |
 HV6561| HV6558 8000 YARD FRONT RANGE               176.169 METERS 32918     |
 HV6561|---------------------------------------------------------------------|
 HV6561
 HV6561                          SUPERSEDED SURVEY CONTROL
 HV6561
 HV6561  NAD 83(1991)-  38 06 56.52286(N)    076 25 39.12824(W) AD(       ) 3
 HV6561  NAD 83(1986)-  38 06 56.52412(N)    076 25 39.14215(W) AD(       ) 3
 HV6561  NAD 27      -  38 06 56.07200(N)    076 25 40.31000(W) AD(       ) 3
 HV6561  USSD        -  38 06 56.47800(N)    076 25 40.07500(W) AD(       ) 3
 HV6561
 HV6561.Superseded values are not recommended for survey control.
 HV6561
 HV6561.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6561.See file dsdata.pdf to determine how the superseded data were derived.
 HV6561
 HV6561_MARKER: DS = TRIANGULATION STATION DISK
 HV6561_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6561_STAMPING: 8 T
 HV6561_MARK LOGO: CGS
 HV6561_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6561
 HV6561  HISTORY     - Date     Condition        Report By
 HV6561  HISTORY     - 1919     MONUMENTED       CGS
 HV6561  HISTORY     - 1921     GOOD             CGS
 HV6561  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6561
 HV6561                          STATION DESCRIPTION
 HV6561
 HV6561'DESCRIBED BY COAST AND GEODETIC SURVEY 1921
 HV6561'STATION IS ON E BANK OF ST. MARYS RIVER, 0.9 NAUTICAL MILE NW
 HV6561'OF KITTS POINT, 200 METERS NW OF AN ISOLATED CLUMP OF GUM TREES
 HV6561'STANDING AT OUTSIDE EDGE OF CULTIVATED FIELD, AND ALMOST ON
 HV6561'THE LINE OF A RAIL FENCE SEPARATING THIS FROM ANOTHER CULTIVATED
 HV6561'FIELD.  IT IS 0.5 METER N OF THE FENCE LINE, AND 7.5 METERS FROM
 HV6561'EDGE OF RAPIDLY CAVING BANK WHICH IS 4 FEET HIGH.  THE SHORE IS
 HV6561'ERODING RAPIDLY ALONG ALL THESE FIELDS.  THE LAND BELONGS TO
 HV6561'THE JESUIT FATHERS.  STATION MARK IS A BRONZE TABLET (STAMPED 8
 HV6561'T), SET IN CONCRETE IN A TILE, WHICH IS SURROUNDED BY A MASS
 HV6561'OF CONCRETE.  STATION FRONT RANGE IS 176.24 METERS (578.2
 HV6561'FEET) NW FROM THE STATION.
 HV6561
 HV6561                          STATION RECOVERY (1958)
 HV6561
 HV6561'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6561'A THOROUGH SEARCH WAS MADE FOR THIS STATION BY TWO MEN WITHOUT
 HV6561'RESULTS.  THE SHORELINE HAS UNDERGONE EXTREME EROSION AS IS
 HV6561'INDICATED IN THE ORIGINAL DESCRIPTION AND THE SUBSEQUENT RECOVERY
 HV6561'NOTE.  THERE WAS NO TRACE OF ANY OF THE LOCAL REFERENCES.  AN
 HV6561'UNSTAMPED, STANDARD C AND G S REFERENCE MARK WAS FOUND LYING 30
 HV6561'FEET OFFSHORE.  THE DISK WAS REMOVED FROM THE CONCRETE BASE.  NO
 HV6561'INDICATION OF ITS ORIGIN COULD BE FOUND IN THE DESCRIPTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6558 ***********************************************************************
 HV6558  DESIGNATION -  8000 YARD FRONT RANGE
 HV6558  PID         -  HV6558
 HV6558  STATE/COUNTY-  MD/ST MARYS
 HV6558  COUNTRY     -  US
 HV6558  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6558
 HV6558                         *CURRENT SURVEY CONTROL
 HV6558  ______________________________________________________________________
 HV6558* NAD 83(1993) POSITION- 38 07 01.43624(N) 076 25 42.81913(W)   ADJUSTED
 HV6558* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6558  ______________________________________________________________________
 HV6558  GEOID HEIGHT    -        -34.876 (meters)                     GEOID18
 HV6558  LAPLACE CORR    -         -6.13  (seconds)                    DEFLEC18
 HV6558  HORZ ORDER      -  SECOND
 HV6558
 HV6558.The horizontal coordinates were established by classical geodetic methods
 HV6558.and adjusted by the National Geodetic Survey in November 1994.
 HV6558
 HV6558.The orthometric height was scaled from a topographic map.
 HV6558
 HV6558.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6558.GEOID18 height accuracy estimate available here.
 HV6558
 HV6558.Click photographs - Photos may exist for this station.
 HV6558
 HV6558.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6558
 HV6558. The following values were computed from the NAD 83(1993) position.
 HV6558
 HV6558;                    North         East     Units Scale Factor Converg.
 HV6558;SPC MD       -    50,153.549   450,112.534   MT  1.00003686   +0 21 31.2
 HV6558;SPC MD       -   164,545.44  1,476,744.21   sFT  1.00003686   +0 21 31.2
 HV6558;SPC VA S     - 1,199,952.631 3,681,641.033   MT  1.00003091   +1 15 25.9
 HV6558;SPC VA S     - 3,936,844.59 12,078,850.62   sFT  1.00003091   +1 15 25.9
 HV6558;UTM  18      - 4,219,767.589   374,772.696   MT  0.99979314   -0 52 54.9
 HV6558
 HV6558!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6558!SPC MD       -   1.00000520  x   1.00003686  =   1.00004206
 HV6558!SPC VA S     -   1.00000520  x   1.00003091  =   1.00003611
 HV6558!UTM  18      -   1.00000520  x   0.99979314  =   0.99979834
 HV6558
 HV6558_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7477219767(NAD 83)
 HV6558
 HV6558                          SUPERSEDED SURVEY CONTROL
 HV6558
 HV6558  NAD 83(1991)-  38 07 01.43535(N)    076 25 42.82141(W) AD(       ) 2
 HV6558  NAD 83(1986)-  38 07 01.43659(N)    076 25 42.83530(W) AD(       ) 2
 HV6558  NAD 27      -  38 07 01.00300(N)    076 25 43.96900(W) AD(       ) 2
 HV6558  USSD        -  38 07 01.40900(N)    076 25 43.73300(W) AD(       ) 3
 HV6558
 HV6558.Superseded values are not recommended for survey control.
 HV6558
 HV6558.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6558.See file dsdata.pdf to determine how the superseded data were derived.
 HV6558
 HV6558_MARKER: DS = TRIANGULATION STATION DISK
 HV6558_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6558_STAMPING: RANGE 8000
 HV6558_MARK LOGO: CGS
 HV6558_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6558
 HV6558  HISTORY     - Date     Condition        Report By
 HV6558  HISTORY     - 1919     MONUMENTED       CGS
 HV6558  HISTORY     - 1921     SEE DESCRIPTION  CGS
 HV6558  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6558
 HV6558                          STATION DESCRIPTION
 HV6558
 HV6558'DESCRIBED BY COAST AND GEODETIC SURVEY 1921
 HV6558'STATION IS ON E BANK OF ST. MARYS RIVER, 1 NAUTICAL MILE NW OF
 HV6558'KITTS POINT, 0.2 MILE SE OF ANOTHER POINT COVERED WITH A SCRUB
 HV6558'GROWTH OF EVERGREENS, 175 METERS NW OF A RAIL FENCE, AND IN A
 HV6558'CULTIVATED FIELD BELONGING TO THE JESUIT FATHERS, ON A FLAT
 HV6558'CLAY LAND, 11.5 METERS BACK FROM EDGE OF A RAPIDLY CAVING CLAY
 HV6558'BANK 5 FEET HIGH.  STATION MARK IS A BRONZE TABLET SET IN
 HV6558'CONCRETE IN A TILE SURROUNDED BY A MASS OF CONCRETE.  THE
 HV6558'CONCRETE IS SPREAD OUT TO MAKE IT CONSPICIOUS AND THE TABLET
 HV6558'IS STAMPED FRONT RANGE 8,000.  THE TRIAL STATION IS 176.24
 HV6558'METERS (578.2 FEET) TO THE SE.
 HV6558
 HV6558                          STATION RECOVERY (1958)
 HV6558
 HV6558'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6558'THE STATION IS LOST.  A THOROUGH SEARCH WAS MADE AT THE PLOTTED
 HV6558'POSITION OF THIS STATION.  DUE TO THE LOSS OF ALL LOCAL REFERENCES
 HV6558'THIS STATION COULD NOT BE RECOVERED.  IT IS BELIEVED THAT THE
 HV6558'STATION WAS UNDERMINED BY THE RAPIDLY CAVING BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8838 ***********************************************************************
 HV8838  TIDAL BM    -  This is a Tidal Bench Mark.
 HV8838  DESIGNATION -  8002 A
 HV8838  PID         -  HV8838
 HV8838  STATE/COUNTY-  MD/ST MARYS
 HV8838  COUNTRY     -  US
 HV8838  USGS QUAD   -  POINT LOOKOUT (2016)
 HV8838
 HV8838                         *CURRENT SURVEY CONTROL
 HV8838  ______________________________________________________________________
 HV8838* NAD 83(1991) POSITION- 38 02 20.41957(N) 076 19 21.16122(W)   ADJUSTED
 HV8838* NAD 83(1991) ELLIP HT-   -34.498 (meters)        (01/27/92)   ADJUSTED
 HV8838* NAVD 88 ORTHO HEIGHT -     0.8   (meters)        3.    (feet) VERTCON3
 HV8838  ______________________________________________________________________
 HV8838  GEOID HEIGHT    -        -35.334 (meters)                     GEOID18
 HV8838  NAD 83(1991) X  -  1,189,310.341 (meters)                     COMP
 HV8838  NAD 83(1991) Y  - -4,887,103.444 (meters)                     COMP
 HV8838  NAD 83(1991) Z  -  3,908,833.480 (meters)                     COMP
 HV8838  LAPLACE CORR    -         -6.11  (seconds)                    DEFLEC18
 HV8838  HORZ ORDER      -  FIRST
 HV8838  ELLP ORDER      -  FOURTH    CLASS I
 HV8838
 HV8838.The horizontal coordinates were established by GPS observations
 HV8838.and adjusted by the National Geodetic Survey in January 1992.
 HV8838
 HV8838.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8838.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8838
 HV8838.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8838.GEOID18 height accuracy estimate available here.
 HV8838
 HV8838.This Tidal Bench Mark is designated as VM 3223
 HV8838.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV8838
 HV8838.Click photographs - Photos may exist for this station.
 HV8838
 HV8838.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8838
 HV8838.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8838
 HV8838.The ellipsoidal height was determined by GPS observations
 HV8838.and is referenced to NAD 83.
 HV8838
 HV8838. The following values were computed from the NAD 83(1991) position.
 HV8838
 HV8838;                    North         East     Units Scale Factor Converg.
 HV8838;SPC MD       -    41,552.463   459,473.792   MT  1.00005565   +0 25 30.7
 HV8838;SPC MD       -   136,326.71  1,507,456.93   sFT  1.00005565   +0 25 30.7
 HV8838;UTM  18      - 4,210,968.221   383,943.125   MT  0.99976589   -0 48 54.1
 HV8838
 HV8838!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8838!SPC MD       -   1.00000541  x   1.00005565  =   1.00006106
 HV8838!UTM  18      -   1.00000541  x   0.99976589  =   0.99977130
 HV8838
 HV8838_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8394310968(NAD 83)
 HV8838
 HV8838                          SUPERSEDED SURVEY CONTROL
 HV8838
 HV8838  NAD 83(1986)-  38 02 20.41675(N)    076 19 21.17937(W) AD(       ) 1
 HV8838  NAD 27      -  38 02 19.96500(N)    076 19 22.36702(W) AD(       ) 1
 HV8838  NGVD 29 (11/20/87)    1.1    (m)  RAPOU78  model used  GPS OBS        
 HV8838
 HV8838.Superseded values are not recommended for survey control.
 HV8838
 HV8838.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8838.See file dsdata.pdf to determine how the superseded data were derived.
 HV8838
 HV8838_MARKER: DB = BENCH MARK DISK
 HV8838_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 HV8838+WITH SETTING: INFORMATION.
 HV8838_STAMPING: 8002 A 1981
 HV8838_MARK LOGO: NOS
 HV8838_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8838_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8838_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8838+SATELLITE: SATELLITE OBSERVATIONS - 1986
 HV8838
 HV8838  HISTORY     - Date     Condition        Report By
 HV8838  HISTORY     - 1981     MONUMENTED       NOS
 HV8838  HISTORY     - 1986     GOOD             NGS
 HV8838
 HV8838                          STATION DESCRIPTION
 HV8838
 HV8838'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (MRM)
 HV8838'THE STATION IS LOCATED ABOUT 6.4 KM (4.0 MI)
 HV8838'SOUTHEAST OF SCOTLAND AND AT THE PT. LOOKOUT STATE PARK.
 HV8838'OWNERSHIP--U.S. GOVERNMENT, PATUXENT NAVAL AIR TEST CENTER MD, FOR
 HV8838'ACCESS CONTACT MIKE SHEEHAN, PHONE 301-863-1183.
 HV8838'
 HV8838'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 5 AND 235
 HV8838'IN RIDGE, GO SOUTHEASTERLY FOR 6.3 KM (3.9 MI) ON HIGHWAY 5 TO A
 HV8838'POINT WHERE HIGHWAY 5 TURNS RIGHT.  TURN RIGHT, TOWARD PT. LOOKOUT
 HV8838'STATE PARK, AND GO SOUTH FOR 4.7 KM (2.95 MI) ON A PAVED ROAD TO A
 HV8838'LOCKED GATE ON THE RIGHT.  TURN RIGHT, PASS THRU GATE ONTO THE
 HV8838'GROUNDS OF THE ABANDONED LIGHTHOUSE TO THE STATION ON THE RIGHT.
 HV8838'
 HV8838'THE STATION IS A STANDARD NOS DISK
 HV8838'STAMPED---8002A 1981---,
 HV8838'CRIMPED TO THE TOP OF A STAINLESS STEEL ROD PROJECTING 30 CM ABOVE
 HV8838'GROUND ENCASED IN A PVC PIPE 10 CM IN DIAMETER.  LOCATED
 HV8838'37.49 METERS (123.0 FT) NORTHWEST FROM THE FOOT OF STAIRS ON THE
 HV8838'NORTHWEST SIDE OF THE LIGHTHOUSE,
 HV8838'30.48 METERS (100.0 FT) WEST-SOUTHWEST FROM THE CENTER OF THE GATE
 HV8838'ENTRANCE TO THE LIGHTHOUSE GROUNDS,
 HV8838'28.96 METERS (95.0 FT) NORTH-NORTHWEST FROM THE CENTER OF A GATE
 HV8838'ENTRANCE TO A RADAR TRACKING STATION AND
 HV8838'10.06 METERS (33.0 FT) NORTH-NORTHEAST FROM THE NORTHEASTERNMOST
 HV8838'CORNER OF A FOUNDATION FOR THE NOAA WIND RECORDING STATION TOWER.
 HV8838'
 HV8838'FAA AIRPORT SURVEYS, MARYLAND, JANUARY-FEBRUARY 1986.
 HV8838'
 HV8838'THIS STATION SUITABLE FOR GPS SURVEYS.
 HV8838'
 HV8838'DESCRIBED BY D.R. LOKKEN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1429 ***********************************************************************
 HV1429  DESIGNATION -  802 WSSC
 HV1429  PID         -  HV1429
 HV1429  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1429  COUNTRY     -  US
 HV1429  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1429
 HV1429                         *CURRENT SURVEY CONTROL
 HV1429  ______________________________________________________________________
 HV1429* NAD 83(1986) POSITION- 38 59 21.     (N) 076 59 16.     (W)   SCALED
 HV1429* NAVD 88 ORTHO HEIGHT -    55.93  (+/-2cm)      183.5   (feet) VERTCON3
 HV1429  ______________________________________________________________________
 HV1429  GEOID HEIGHT    -        -32.036 (meters)                     GEOID18
 HV1429  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1429
 HV1429.The horizontal coordinates were scaled from a map and have
 HV1429.an estimated accuracy of +/- 6 seconds.
 HV1429
 HV1429.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1429.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1429
 HV1429.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1429.GEOID18 height accuracy estimate available here.
 HV1429
 HV1429.The vertical order pertains to the NGVD 29 superseded value.
 HV1429
 HV1429.Click photographs - Photos may exist for this station.
 HV1429
 HV1429;                    North         East    Units  Estimated Accuracy
 HV1429;SPC MD       -   146,800.      401,060.      MT  (+/- 180 meters Scaled)
 HV1429
 HV1429_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ278174(NAD 83)
 HV1429
 HV1429                          SUPERSEDED SURVEY CONTROL
 HV1429
 HV1429  NGVD 29 (11/26/84)   56.144  (m)          184.20   (f) ADJUSTED    2 0
 HV1429
 HV1429.Superseded values are not recommended for survey control.
 HV1429
 HV1429.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1429.See file dsdata.pdf to determine how the superseded data were derived.
 HV1429
 HV1429_MARKER: Z = SEE DESCRIPTION
 HV1429_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1429_SP_SET: GATEPOST
 HV1429_STAMPING: WSSC 802
 HV1429_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1429
 HV1429  HISTORY     - Date     Condition        Report By
 HV1429  HISTORY     - UNK      MONUMENTED       WSSC
 HV1429  HISTORY     - 1939     GOOD             WSSC
 HV1429
 HV1429                          STATION DESCRIPTION
 HV1429
 HV1429'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1429'0.5 MI SE FROM BROWNS CORNER.
 HV1429'AT THE INTERSECTION OF NEW HAMPSHIRE AVENUE AND UNIVERSITY
 HV1429'BOULEVARD, ABOUT 1/2 MILE NORTHWEST OF RIGGS ROAD, ON THE NORTH
 HV1429'SIDE OF UNIVERSITY BOULEVARD, AND IN THE SOUTH SIDE OF AN EAST
 HV1429'CONCRETE GATEPOST. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1427 ***********************************************************************
 HV1427  DESIGNATION -  803 WSSC
 HV1427  PID         -  HV1427
 HV1427  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1427  COUNTRY     -  US
 HV1427  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1427
 HV1427                         *CURRENT SURVEY CONTROL
 HV1427  ______________________________________________________________________
 HV1427* NAD 83(1986) POSITION- 38 59 33.     (N) 076 59 27.     (W)   SCALED
 HV1427* NAVD 88 ORTHO HEIGHT -    64.23  (+/-2cm)      210.7   (feet) VERTCON3
 HV1427  ______________________________________________________________________
 HV1427  GEOID HEIGHT    -        -32.029 (meters)                     GEOID18
 HV1427  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1427
 HV1427.The horizontal coordinates were scaled from a map and have
 HV1427.an estimated accuracy of +/- 6 seconds.
 HV1427
 HV1427.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1427.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1427
 HV1427.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1427.GEOID18 height accuracy estimate available here.
 HV1427
 HV1427.The vertical order pertains to the NGVD 29 superseded value.
 HV1427
 HV1427.Click photographs - Photos may exist for this station.
 HV1427
 HV1427;                    North         East    Units  Estimated Accuracy
 HV1427;SPC MD       -   147,170.      400,790.      MT  (+/- 180 meters Scaled)
 HV1427
 HV1427_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ275178(NAD 83)
 HV1427
 HV1427                          SUPERSEDED SURVEY CONTROL
 HV1427
 HV1427  NGVD 29 (11/26/84)   64.444  (m)          211.43   (f) ADJUSTED    2 0
 HV1427
 HV1427.Superseded values are not recommended for survey control.
 HV1427
 HV1427.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1427.See file dsdata.pdf to determine how the superseded data were derived.
 HV1427
 HV1427_MARKER: Z = SEE DESCRIPTION
 HV1427_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1427_SP_SET: BOUNDARY STONE
 HV1427_STAMPING: WSSC 803
 HV1427_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1427
 HV1427  HISTORY     - Date     Condition        Report By
 HV1427  HISTORY     - UNK      MONUMENTED       WSSC
 HV1427  HISTORY     - 1939     GOOD             WSSC
 HV1427
 HV1427                          STATION DESCRIPTION
 HV1427
 HV1427'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1427'0.2 MI SE FROM BROWNS CORNER.
 HV1427'ON UNIVERSITY BOULEVARD, ABOUT 700 FEET EAST OF CARROLL AVENUE,
 HV1427'ON THE NORTH SIDE OF THE ROAD, AT THE PRINCE GEORGES-MONTGOMERY
 HV1427'COUNTY LINE, AND IN A BOUNDARY STONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0400 ***********************************************************************
 HV0400  DESIGNATION -  81
 HV0400  PID         -  HV0400
 HV0400  STATE/COUNTY-  MD/ST MARYS
 HV0400  COUNTRY     -  US
 HV0400  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV0400
 HV0400                         *CURRENT SURVEY CONTROL
 HV0400  ______________________________________________________________________
 HV0400* NAD 83(1986) POSITION- 38 09 04.     (N) 076 23 37.     (W)   SCALED
 HV0400* NAVD 88 ORTHO HEIGHT -    24.396 (meters)       80.04  (feet) ADJUSTED
 HV0400  ______________________________________________________________________
 HV0400  GEOID HEIGHT    -        -34.941 (meters)                     GEOID18
 HV0400  DYNAMIC HEIGHT  -         24.380 (meters)       79.99  (feet) COMP
 HV0400  MODELED GRAVITY -    979,983.6   (mgal)                       NAVD 88
 HV0400
 HV0400  VERT ORDER      -  FIRST     CLASS II
 HV0400
 HV0400.The horizontal coordinates were scaled from a map and have
 HV0400.an estimated accuracy of +/- 6 seconds.
 HV0400
 HV0400.The orthometric height was determined by differential leveling and
 HV0400.adjusted by the NATIONAL GEODETIC SURVEY
 HV0400.in June 1991.
 HV0400
 HV0400.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0400.GEOID18 height accuracy estimate available here.
 HV0400
 HV0400.Click photographs - Photos may exist for this station.
 HV0400
 HV0400.The dynamic height is computed by dividing the NAVD 88
 HV0400.geopotential number by the normal gravity value computed on the
 HV0400.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0400.degrees latitude (g = 980.6199 gals.).
 HV0400
 HV0400.The modeled gravity was interpolated from observed gravity values.
 HV0400
 HV0400;                    North         East    Units  Estimated Accuracy
 HV0400;SPC MD       -    53,950.      453,150.      MT  (+/- 180 meters Scaled)
 HV0400
 HV0400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH778234(NAD 83)
 HV0400
 HV0400                          SUPERSEDED SURVEY CONTROL
 HV0400
 HV0400  NGVD 29 (11/26/84)   24.686  (m)           80.99   (f) ADJUSTED    1 2
 HV0400
 HV0400.Superseded values are not recommended for survey control.
 HV0400
 HV0400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0400.See file dsdata.pdf to determine how the superseded data were derived.
 HV0400
 HV0400_MARKER: DD = SURVEY DISK
 HV0400_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV0400_MARK LOGO: CGS+SS
 HV0400_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0400
 HV0400  HISTORY     - Date     Condition        Report By
 HV0400  HISTORY     - 1934     MONUMENTED       MDGS
 HV0400  HISTORY     - 1941     GOOD             CGS
 HV0400
 HV0400                          STATION DESCRIPTION
 HV0400
 HV0400'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0400'9.9 MI NW FROM POINT LOOKOUT.
 HV0400'9.9 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE LIGHTHOUSE
 HV0400'AT POINT LOOKOUT, AT ST. INIGOES, 68.5 FEET WEST OF THE
 HV0400'NORTHWEST CORNER OF THE 1ST. HOUSE SOUTH OF KNOTTS GARAGE,
 HV0400'15 FEET WEST OF THE CENTER-LINE OF THE HIGHWAY, 30 FEET NORTH OF
 HV0400'THE CENTER-LINE OF A PRIVATE ROAD LEADING WEST, 4 FEET
 HV0400'NORTHEAST OF A CORNER FENCE POST, 17.7 FEET NORTH OF TELEPHONE
 HV0400'POLE NO. 430, 39 FEET SOUTHWEST OF POWER-LINE POLE NO. 456, 1
 HV0400'FOOT EAST OF A WHITE MARKER POST STENCILED U.S.B.M.  A STANDARD
 HV0400'STATE SURVEY DISK SET IN THE TOP OF A CONCRETE POST.  NO STAMPING
 HV0400'ON THE DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2333 ***********************************************************************
 HV2333  DESIGNATION -  822 WSSC
 HV2333  PID         -  HV2333
 HV2333  STATE/COUNTY-  MD/MONTGOMERY
 HV2333  COUNTRY     -  US
 HV2333  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2333
 HV2333                         *CURRENT SURVEY CONTROL
 HV2333  ______________________________________________________________________
 HV2333* NAD 83(1986) POSITION- 38 59 24.     (N) 077 01 09.     (W)   SCALED
 HV2333* NAVD 88 ORTHO HEIGHT -   101.529 (meters)      333.10  (feet) ADJUSTED
 HV2333  ______________________________________________________________________
 HV2333  GEOID HEIGHT    -        -31.986 (meters)                     GEOID18
 HV2333  DYNAMIC HEIGHT  -        101.474 (meters)      332.92  (feet) COMP
 HV2333  MODELED GRAVITY -    980,086.5   (mgal)                       NAVD 88
 HV2333
 HV2333  VERT ORDER      -  SECOND    CLASS 0
 HV2333
 HV2333.The horizontal coordinates were scaled from a map and have
 HV2333.an estimated accuracy of +/- 6 seconds.
 HV2333
 HV2333.The orthometric height was determined by differential leveling and
 HV2333.adjusted by the NATIONAL GEODETIC SURVEY
 HV2333.in June 1991.
 HV2333
 HV2333.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2333.GEOID18 height accuracy estimate available here.
 HV2333
 HV2333.Click photographs - Photos may exist for this station.
 HV2333
 HV2333.The dynamic height is computed by dividing the NAVD 88
 HV2333.geopotential number by the normal gravity value computed on the
 HV2333.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2333.degrees latitude (g = 980.6199 gals.).
 HV2333
 HV2333.The modeled gravity was interpolated from observed gravity values.
 HV2333
 HV2333;                    North         East    Units  Estimated Accuracy
 HV2333;SPC MD       -   146,900.      398,340.      MT  (+/- 180 meters Scaled)
 HV2333
 HV2333_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ251176(NAD 83)
 HV2333
 HV2333                          SUPERSEDED SURVEY CONTROL
 HV2333
 HV2333  NGVD 29 (11/26/84)  101.748  (m)          333.82   (f) ADJUSTED    2 0
 HV2333
 HV2333.Superseded values are not recommended for survey control.
 HV2333
 HV2333.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2333.See file dsdata.pdf to determine how the superseded data were derived.
 HV2333
 HV2333_MARKER: Z = SEE DESCRIPTION
 HV2333_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2333_SP_SET: BUILDING
 HV2333_STAMPING: WSSC 822
 HV2333_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2333
 HV2333  HISTORY     - Date     Condition        Report By
 HV2333  HISTORY     - UNK      MONUMENTED       WSSC
 HV2333  HISTORY     - 1951     GOOD             CGS
 HV2333
 HV2333                          STATION DESCRIPTION
 HV2333
 HV2333'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2333'0.4 MI E FROM SILVER SPRING.
 HV2333'ABOUT 0.4 MILE EAST ALONG SLIGO AVENUE FROM THE BALTIMORE AND
 HV2333'OHIO RAILROAD STATION AT SILVER SPRING, MONTGOMERY COUNTY, ABOUT
 HV2333'50 YARDS EAST OF CHICAGO AVENUE, AT A STORE BUILDING ON THE
 HV2333'NORTH SIDE OF SLIGO AVENUE, AND IN THE FRONT SIDE OF THE
 HV2333'SOUTHWEST CORNER OF THE BUILDING.  A WASHINGTON SUBURBAN SANITARY
 HV2333'DISTRICT LAG SCREW AND WASHER, STAMPED WSSC 822.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2332 ***********************************************************************
 HV2332  DESIGNATION -  823 WSSC
 HV2332  PID         -  HV2332
 HV2332  STATE/COUNTY-  MD/MONTGOMERY
 HV2332  COUNTRY     -  US
 HV2332  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2332
 HV2332                         *CURRENT SURVEY CONTROL
 HV2332  ______________________________________________________________________
 HV2332* NAD 83(1986) POSITION- 38 59 27.     (N) 077 00 56.     (W)   SCALED
 HV2332* NAVD 88 ORTHO HEIGHT -   100.311 (meters)      329.10  (feet) ADJUSTED
 HV2332  ______________________________________________________________________
 HV2332  GEOID HEIGHT    -        -31.991 (meters)                     GEOID18
 HV2332  DYNAMIC HEIGHT  -        100.256 (meters)      328.92  (feet) COMP
 HV2332  MODELED GRAVITY -    980,086.3   (mgal)                       NAVD 88
 HV2332
 HV2332  VERT ORDER      -  SECOND    CLASS 0
 HV2332
 HV2332.The horizontal coordinates were scaled from a map and have
 HV2332.an estimated accuracy of +/- 6 seconds.
 HV2332
 HV2332.The orthometric height was determined by differential leveling and
 HV2332.adjusted by the NATIONAL GEODETIC SURVEY
 HV2332.in June 1991.
 HV2332
 HV2332.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2332.GEOID18 height accuracy estimate available here.
 HV2332
 HV2332.Click photographs - Photos may exist for this station.
 HV2332
 HV2332.The dynamic height is computed by dividing the NAVD 88
 HV2332.geopotential number by the normal gravity value computed on the
 HV2332.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2332.degrees latitude (g = 980.6199 gals.).
 HV2332
 HV2332.The modeled gravity was interpolated from observed gravity values.
 HV2332
 HV2332;                    North         East    Units  Estimated Accuracy
 HV2332;SPC MD       -   146,990.      398,650.      MT  (+/- 180 meters Scaled)
 HV2332
 HV2332_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ254176(NAD 83)
 HV2332
 HV2332                          SUPERSEDED SURVEY CONTROL
 HV2332
 HV2332  NGVD 29 (11/26/84)  100.525  (m)          329.81   (f) ADJUSTED    2 0
 HV2332
 HV2332.Superseded values are not recommended for survey control.
 HV2332
 HV2332.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2332.See file dsdata.pdf to determine how the superseded data were derived.
 HV2332
 HV2332_MARKER: Z = SEE DESCRIPTION
 HV2332_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2332_SP_SET: STEP
 HV2332_STAMPING: WSSC 823
 HV2332_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2332
 HV2332  HISTORY     - Date     Condition        Report By
 HV2332  HISTORY     - UNK      MONUMENTED       WSSC
 HV2332  HISTORY     - 1951     GOOD             CGS
 HV2332
 HV2332                          STATION DESCRIPTION
 HV2332
 HV2332'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2332'0.6 MI E FROM SILVER SPRING.
 HV2332'ABOUT 0.6 MILE EAST ALONG SLIGO AVENUE FROM THE BALTIMORE AND
 HV2332'OHIO RAILROAD STATION AT SILVER SPRING, MONTGOMERY COUNTY, ABOUT
 HV2332'100 YARDS EAST OF MISSISSIPPI AVENUE, ON THE NORTH SIDE OF
 HV2332'SLIGO AVENUE, AT NO 629 (OLD NUMBER) SLIGO AVENUE, AND ON THE
 HV2332'WEST END OF THE BOTTOM STEP OF A SHORT FLIGHT OF CONCRETE STEPS
 HV2332'LEADING UP TO THE HOUSE.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV2332'LAG SCREW AND WASHER, STAMPED W.S.S.D. 823.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1798 ***********************************************************************
 HV1798  DESIGNATION -  829 WSSC
 HV1798  PID         -  HV1798
 HV1798  STATE/COUNTY-  MD/MONTGOMERY
 HV1798  COUNTRY     -  US
 HV1798  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1798
 HV1798                         *CURRENT SURVEY CONTROL
 HV1798  ______________________________________________________________________
 HV1798* NAD 83(1986) POSITION- 38 59 15.     (N) 077 05 06.     (W)   SCALED
 HV1798* NAVD 88 ORTHO HEIGHT -    88.023 (meters)      288.79  (feet) ADJUSTED
 HV1798  ______________________________________________________________________
 HV1798  GEOID HEIGHT    -        -31.891 (meters)                     GEOID18
 HV1798  DYNAMIC HEIGHT  -         87.975 (meters)      288.63  (feet) COMP
 HV1798  MODELED GRAVITY -    980,087.3   (mgal)                       NAVD 88
 HV1798
 HV1798  VERT ORDER      -  FIRST     CLASS II
 HV1798
 HV1798.The horizontal coordinates were scaled from a map and have
 HV1798.an estimated accuracy of +/- 6 seconds.
 HV1798
 HV1798.The orthometric height was determined by differential leveling and
 HV1798.adjusted by the NATIONAL GEODETIC SURVEY
 HV1798.in June 1991.
 HV1798
 HV1798.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1798.GEOID18 height accuracy estimate available here.
 HV1798
 HV1798.Click photographs - Photos may exist for this station.
 HV1798
 HV1798.The dynamic height is computed by dividing the NAVD 88
 HV1798.geopotential number by the normal gravity value computed on the
 HV1798.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1798.degrees latitude (g = 980.6199 gals.).
 HV1798
 HV1798.The modeled gravity was interpolated from observed gravity values.
 HV1798
 HV1798;                    North         East    Units  Estimated Accuracy
 HV1798;SPC MD       -   146,620.      392,640.      MT  (+/- 180 meters Scaled)
 HV1798
 HV1798_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ194174(NAD 83)
 HV1798
 HV1798                          SUPERSEDED SURVEY CONTROL
 HV1798
 HV1798  NGVD 29 (11/26/84)   88.236  (m)          289.49   (f) ADJUSTED    1 2
 HV1798
 HV1798.Superseded values are not recommended for survey control.
 HV1798
 HV1798.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1798.See file dsdata.pdf to determine how the superseded data were derived.
 HV1798
 HV1798_MARKER: B = BOLT
 HV1798_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1798_SP_SET: CULVERT MARKER BASE
 HV1798_STAMPING: WSSC 829
 HV1798_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1798
 HV1798  HISTORY     - Date     Condition        Report By
 HV1798  HISTORY     - UNK      MONUMENTED       WSSC
 HV1798  HISTORY     - 1933     GOOD             CGS
 HV1798  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV1798
 HV1798                          STATION DESCRIPTION
 HV1798
 HV1798'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1798'0.6 MI SW FROM CHEVY CHASE LAKE.
 HV1798'0.6 MILE SOUTHWEST ALONG THE GEORGETOWN BRANCH OF THE BALTIMORE
 HV1798'AND OHIO RAILROAD FROM THE CONNECTICUT AVENUE CROSSING AT
 HV1798'CHEVY CHASE LAKE, MONTGOMERY COUNTY, 600 FEET NORTHEAST OF AN
 HV1798'OVERHEAD CONCRETE BRIDGE, AT CULVERT MARKER 5, IN THE SOUTHEAST
 HV1798'CORNER OF THE BASE, 8 FEET NORTH OF THE CENTERLINE OF THE TRACK,
 HV1798'AND ABOUT 8 INCHES BELOW THE TOP OF THE RAIL.  A WASHINGTON
 HV1798'SUBURBAN SANITARY DISTRICT STANDARD COPPER BOLT AND WASHER,
 HV1798'STAMPED WSSC 829.
 HV1798
 HV1798                          STATION RECOVERY (2000)
 HV1798
 HV1798'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV1798'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0003 ***********************************************************************
 JV0003  DESIGNATION -  83
 JV0003  PID         -  JV0003
 JV0003  STATE/COUNTY-  MD/HARFORD
 JV0003  COUNTRY     -  US
 JV0003  USGS QUAD   -  ABERDEEN (2016)
 JV0003
 JV0003                         *CURRENT SURVEY CONTROL
 JV0003  ______________________________________________________________________
 JV0003* NAD 83(1986) POSITION- 39 30 34.88   (N) 076 09 51.72   (W)   HD_HELD1
 JV0003* NAVD 88 ORTHO HEIGHT -    24.971 (meters)       81.93  (feet) ADJUSTED
 JV0003  ______________________________________________________________________
 JV0003  GEOID HEIGHT    -        -33.115 (meters)                     GEOID18
 JV0003  DYNAMIC HEIGHT  -         24.958 (meters)       81.88  (feet) COMP
 JV0003  MODELED GRAVITY -    980,125.6   (mgal)                       NAVD 88
 JV0003
 JV0003  VERT ORDER      -  FIRST     CLASS II
 JV0003
 JV0003.The horizontal coordinates were determined by differentially corrected
 JV0003.hand held GPS observations or other comparable positioning techniques
 JV0003.and have an estimated accuracy of +/- 3 meters.
 JV0003
 JV0003.The orthometric height was determined by differential leveling and
 JV0003.adjusted by the NATIONAL GEODETIC SURVEY
 JV0003.in June 1991.
 JV0003
 JV0003.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0003.GEOID18 height accuracy estimate available here.
 JV0003
 JV0003.Click photographs - Photos may exist for this station.
 JV0003
 JV0003.The dynamic height is computed by dividing the NAVD 88
 JV0003.geopotential number by the normal gravity value computed on the
 JV0003.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0003.degrees latitude (g = 980.6199 gals.).
 JV0003
 JV0003.The modeled gravity was interpolated from observed gravity values.
 JV0003
 JV0003;                    North         East    Units  Estimated Accuracy
 JV0003;SPC MD       -   204,919.6     471,865.5     MT  (+/- 3 meters HH1 GPS) 
 JV0003
 JV0003_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9990173986(NAD 83)
 JV0003
 JV0003                          SUPERSEDED SURVEY CONTROL
 JV0003
 JV0003  NGVD 29 (11/26/84)   25.215  (m)           82.73   (f) ADJUSTED    1 2
 JV0003
 JV0003.Superseded values are not recommended for survey control.
 JV0003
 JV0003.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0003.See file dsdata.pdf to determine how the superseded data were derived.
 JV0003
 JV0003_MARKER: DB = BENCH MARK DISK
 JV0003_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 JV0003_SP_SET: FOUNDATION
 JV0003_STAMPING: 83
 JV0003_MARK LOGO: USGS
 JV0003_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV0003+STABILITY: POSITION/ELEVATION WELL
 JV0003_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0003+SATELLITE: SATELLITE OBSERVATIONS - September 19, 2015
 JV0003
 JV0003  HISTORY     - Date     Condition        Report By
 JV0003  HISTORY     - UNK      MONUMENTED       USGS
 JV0003  HISTORY     - 1971     GOOD             NGS
 JV0003  HISTORY     - 1987     GOOD             USPSQD
 JV0003  HISTORY     - 19891106 GOOD             NGS
 JV0003  HISTORY     - 19970419 GOOD             USPSQD
 JV0003  HISTORY     - 20020511 GOOD             USPSQD
 JV0003  HISTORY     - 20030522 GOOD             GEOCAC
 JV0003  HISTORY     - 20150919 GOOD             USPSQD
 JV0003
 JV0003                          STATION DESCRIPTION
 JV0003
 JV0003'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0003'AT ABERDEEN.
 JV0003'AT ABERDEEN, NEAR THE JUNCTION OF MAIN STREET AND HOWARD STREET,
 JV0003'SET IN THE TOP AND NEAR THE SOUTH CORNER OF THE WHITE GRANITE
 JV0003'WINDOW SILL OF THE EQUITABLE TRUST BANK BUILDING, 8.2 FEET
 JV0003'NORTHWEST OF THE SOUTH CORNER OF THE BUILDING, 13 1/2 FEET
 JV0003'NORTHEAST OF THE NORTHEAST CURB OF MAIN STREET, 16 1/2 FEET
 JV0003'NORTHWEST OF THE NORTHWEST CURB OF HOWARD STREET, AND ABOUT 3 1/2
 JV0003'FEET ABOVE THE LEVEL OF THE SIDEWALK.
 JV0003
 JV0003                          STATION RECOVERY (1987)
 JV0003
 JV0003'RECOVERY NOTE BY US POWER SQUADRON 1987 (EMT)
 JV0003'RECOVERED IN GOOD CONDITION.
 JV0003
 JV0003                          STATION RECOVERY (1989)
 JV0003
 JV0003'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0003'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN
 JV0003'ABERDEEN, AT 11 WEST BEL AIR AVENUE, IN TOP OF THE WATER TABLE OF THE
 JV0003'EQUITABLE TRUST BANK AT 11 WEST BEL AIR AVENUE, 3.6 M (11.8 FT)
 JV0003'SOUTHEAST OF THE CENTER OF THE MAIN ENTRANCE, 2.5 M (8.2 FT)
 JV0003'NORTHWEST OF THE SOUTH CORNER OF THE BUILDING, AND 1.1 M (3.6 FT)
 JV0003'ABOVE THE LEVEL OF A SIDEWALK.
 JV0003
 JV0003                          STATION RECOVERY (1997)
 JV0003
 JV0003'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0003'RECOVERED IN GOOD CONDITION.
 JV0003
 JV0003                          STATION RECOVERY (2002)
 JV0003
 JV0003'RECOVERY NOTE BY US POWER SQUADRON 2002 (JR)
 JV0003'TAKE OUT REFERENCE TO EQUITABLE TRUST BANK, NO LONGER A BANK BUT AN
 JV0003'OFFICE BUILDING.
 JV0003
 JV0003                          STATION RECOVERY (2003)
 JV0003
 JV0003'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV0003'FOUND AS DESCRIBED IN BUILDING AT 11 W. BEL AIR AVENUE ON THE
 JV0003'NORTHEAST CORNER OF THE INTERSECTION WITH HOWARD STREET.
 JV0003
 JV0003                          STATION RECOVERY (2015)
 JV0003
 JV0003'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0003'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1800 ***********************************************************************
 HV1800  DESIGNATION -  830 WSSC
 HV1800  PID         -  HV1800
 HV1800  STATE/COUNTY-  MD/MONTGOMERY
 HV1800  COUNTRY     -  US
 HV1800  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1800
 HV1800                         *CURRENT SURVEY CONTROL
 HV1800  ______________________________________________________________________
 HV1800* NAD 83(1986) POSITION- 38 59 01.     (N) 077 05 19.     (W)   SCALED
 HV1800* NAVD 88 ORTHO HEIGHT -    96.661 (meters)      317.13  (feet) ADJUSTED
 HV1800  ______________________________________________________________________
 HV1800  GEOID HEIGHT    -        -31.889 (meters)                     GEOID18
 HV1800  DYNAMIC HEIGHT  -         96.609 (meters)      316.96  (feet) COMP
 HV1800  MODELED GRAVITY -    980,087.3   (mgal)                       NAVD 88
 HV1800
 HV1800  VERT ORDER      -  FIRST     CLASS II
 HV1800
 HV1800.The horizontal coordinates were scaled from a map and have
 HV1800.an estimated accuracy of +/- 6 seconds.
 HV1800
 HV1800.The orthometric height was determined by differential leveling and
 HV1800.adjusted by the NATIONAL GEODETIC SURVEY
 HV1800.in June 1991.
 HV1800
 HV1800.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1800.GEOID18 height accuracy estimate available here.
 HV1800
 HV1800.Click photographs - Photos may exist for this station.
 HV1800
 HV1800.The dynamic height is computed by dividing the NAVD 88
 HV1800.geopotential number by the normal gravity value computed on the
 HV1800.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1800.degrees latitude (g = 980.6199 gals.).
 HV1800
 HV1800.The modeled gravity was interpolated from observed gravity values.
 HV1800
 HV1800;                    North         East    Units  Estimated Accuracy
 HV1800;SPC MD       -   146,190.      392,320.      MT  (+/- 180 meters Scaled)
 HV1800
 HV1800_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ190170(NAD 83)
 HV1800
 HV1800                          SUPERSEDED SURVEY CONTROL
 HV1800
 HV1800  NGVD 29 (11/26/84)   96.873  (m)          317.82   (f) ADJUSTED    1 2
 HV1800
 HV1800.Superseded values are not recommended for survey control.
 HV1800
 HV1800.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1800.See file dsdata.pdf to determine how the superseded data were derived.
 HV1800
 HV1800_MARKER: B = BOLT
 HV1800_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1800_SP_SET: TREE ROOT
 HV1800_STAMPING: WSSC 830
 HV1800_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1800
 HV1800  HISTORY     - Date     Condition        Report By
 HV1800  HISTORY     - UNK      MONUMENTED       WSSC
 HV1800  HISTORY     - 1933     GOOD             CGS
 HV1800  HISTORY     - 1957     MARK NOT FOUND   CGS
 HV1800  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV1800
 HV1800                          STATION DESCRIPTION
 HV1800
 HV1800'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1800'AT BETHESDA.
 HV1800'AT BETHESDA, MONTGOMERY COUNTY, ON THE GEORGETOWN BRANCH OF
 HV1800'THE BALTIMORE AND OHIO RAILROAD, 0.3 MILE EAST OF THE WISCONSIN
 HV1800'AVENUE OVERPASS, 0.2 MILE SOUTHWEST OF A CONCRETE OVERHEAD
 HV1800'BRIDGE, 40 FEET NORTH OF THE CENTERLINE OF THE TRACK, AT A
 HV1800'24-INCH CHERRYT TREE, AND IN THE ROOT ON THE WEST SIDE OF THE
 HV1800'TREE.  A WASHINGTON SUBURBAN SANITARY DISTRICT STANDARD COPPER
 HV1800'BOLT AND WASHER, STAMPED WSSC 830.
 HV1800
 HV1800                          STATION RECOVERY (1957)
 HV1800
 HV1800'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957
 HV1800'MARK NOT FOUND.
 HV1800
 HV1800                          STATION RECOVERY (2000)
 HV1800
 HV1800'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV1800'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1812 ***********************************************************************
 HV1812  DESIGNATION -  832 WSSC
 HV1812  PID         -  HV1812
 HV1812  STATE/COUNTY-  MD/MONTGOMERY
 HV1812  COUNTRY     -  US
 HV1812  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1812
 HV1812                         *CURRENT SURVEY CONTROL
 HV1812  ______________________________________________________________________
 HV1812* NAD 83(1986) POSITION- 38 57 01.     (N) 077 06 46.     (W)   SCALED
 HV1812* NAVD 88 ORTHO HEIGHT -    50.245 (meters)      164.85  (feet) ADJUSTED
 HV1812  ______________________________________________________________________
 HV1812  GEOID HEIGHT    -        -31.896 (meters)                     GEOID18
 HV1812  DYNAMIC HEIGHT  -         50.218 (meters)      164.76  (feet) COMP
 HV1812  MODELED GRAVITY -    980,091.1   (mgal)                       NAVD 88
 HV1812
 HV1812  VERT ORDER      -  FIRST     CLASS II
 HV1812
 HV1812.The horizontal coordinates were scaled from a map and have
 HV1812.an estimated accuracy of +/- 6 seconds.
 HV1812
 HV1812.The orthometric height was determined by differential leveling and
 HV1812.adjusted by the NATIONAL GEODETIC SURVEY
 HV1812.in June 1991.
 HV1812
 HV1812.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1812.GEOID18 height accuracy estimate available here.
 HV1812
 HV1812.Click photographs - Photos may exist for this station.
 HV1812
 HV1812.The dynamic height is computed by dividing the NAVD 88
 HV1812.geopotential number by the normal gravity value computed on the
 HV1812.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1812.degrees latitude (g = 980.6199 gals.).
 HV1812
 HV1812.The modeled gravity was interpolated from observed gravity values.
 HV1812
 HV1812;                    North         East    Units  Estimated Accuracy
 HV1812;SPC MD       -   142,490.      390,220.      MT  (+/- 180 meters Scaled)
 HV1812
 HV1812_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ169133(NAD 83)
 HV1812
 HV1812                          SUPERSEDED SURVEY CONTROL
 HV1812
 HV1812  NGVD 29 (11/26/84)   50.463  (m)          165.56   (f) ADJUSTED    1 2
 HV1812
 HV1812.Superseded values are not recommended for survey control.
 HV1812
 HV1812.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1812.See file dsdata.pdf to determine how the superseded data were derived.
 HV1812
 HV1812_MARKER: Z = SEE DESCRIPTION
 HV1812_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1812_SP_SET: CULVERT MARKER BASE
 HV1812_STAMPING: WSSC 832
 HV1812_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1812
 HV1812  HISTORY     - Date     Condition        Report By
 HV1812  HISTORY     - UNK      MONUMENTED       WSSC
 HV1812  HISTORY     - 1933     GOOD             CGS
 HV1812  HISTORY     - 1953     MARK NOT FOUND   CGS
 HV1812
 HV1812                          STATION DESCRIPTION
 HV1812
 HV1812'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1812'0.5 MI N FROM BROOKMONT.
 HV1812'0.5 MILE NORTH ALONG THE GEORGETOWN BRANCH OF THE BALTIMORE AND
 HV1812'OHIO RAILROAD FROM THE NORTH PORTAL OF DALECARLIA TUNNEL AT
 HV1812'BROOKMONT, MONTGOMERY COUNTY, 0.6 MILE SOUTH OF THE MASSACHUSETTS
 HV1812'AVENUE UNDERPASS, 75 FEET EAST OF TELEPHONE POLE 53, AT CULVERT
 HV1812'MARKER 12, IN THE NORTHWEST CORNER OF THE CONCRETE BASE, 10 FEET
 HV1812'WEST OF THE CENTERLINE OF THE TRACK, AND ABOUT 1-1/2 FEET BELOW
 HV1812'THE TOP OF THE RAIL.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV1812'STANDARD BRASS SCREW AND WASHER, STAMPED WSSC 832.
 HV1812
 HV1812                          STATION RECOVERY (1953)
 HV1812
 HV1812'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953
 HV1812'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1787 ***********************************************************************
 HV1787  DESIGNATION -  834 WSSC
 HV1787  PID         -  HV1787
 HV1787  STATE/COUNTY-  MD/MONTGOMERY
 HV1787  COUNTRY     -  US
 HV1787  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1787
 HV1787                         *CURRENT SURVEY CONTROL
 HV1787  ______________________________________________________________________
 HV1787* NAD 83(1986) POSITION- 38 58 58.     (N) 077 01 19.     (W)   SCALED
 HV1787* NAVD 88 ORTHO HEIGHT -   101.148 (meters)      331.85  (feet) ADJUSTED
 HV1787  ______________________________________________________________________
 HV1787  GEOID HEIGHT    -        -31.986 (meters)                     GEOID18
 HV1787  DYNAMIC HEIGHT  -        101.093 (meters)      331.67  (feet) COMP
 HV1787  MODELED GRAVITY -    980,088.6   (mgal)                       NAVD 88
 HV1787
 HV1787  VERT ORDER      -  SECOND    CLASS 0
 HV1787
 HV1787.The horizontal coordinates were scaled from a map and have
 HV1787.an estimated accuracy of +/- 6 seconds.
 HV1787
 HV1787.The orthometric height was determined by differential leveling and
 HV1787.adjusted by the NATIONAL GEODETIC SURVEY
 HV1787.in June 1991.
 HV1787
 HV1787.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1787.GEOID18 height accuracy estimate available here.
 HV1787
 HV1787.Click photographs - Photos may exist for this station.
 HV1787
 HV1787.The dynamic height is computed by dividing the NAVD 88
 HV1787.geopotential number by the normal gravity value computed on the
 HV1787.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1787.degrees latitude (g = 980.6199 gals.).
 HV1787
 HV1787.The modeled gravity was interpolated from observed gravity values.
 HV1787
 HV1787;                    North         East    Units  Estimated Accuracy
 HV1787;SPC MD       -   146,100.      398,100.      MT  (+/- 180 meters Scaled)
 HV1787
 HV1787_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ248168(NAD 83)
 HV1787
 HV1787                          SUPERSEDED SURVEY CONTROL
 HV1787
 HV1787  NGVD 29 (11/26/84)  101.358  (m)          332.54   (f) ADJUSTED    2 0
 HV1787
 HV1787.Superseded values are not recommended for survey control.
 HV1787
 HV1787.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1787.See file dsdata.pdf to determine how the superseded data were derived.
 HV1787
 HV1787_MARKER: B = BOLT
 HV1787_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1787_SP_SET: BRIDGE
 HV1787_STAMPING: WSSC 834
 HV1787_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1787
 HV1787  HISTORY     - Date     Condition        Report By
 HV1787  HISTORY     - UNK      MONUMENTED       WSSC
 HV1787  HISTORY     - 1933     GOOD             CGS
 HV1787  HISTORY     - 1951     GOOD             CGS
 HV1787
 HV1787                          STATION DESCRIPTION
 HV1787
 HV1787'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1787'0.6 MI S FROM SILVER SPRING.
 HV1787'0.6 MILE SOUTH ALONG THE METROPOLITAN BRANCH OF THE BALTIMORE
 HV1787'AND OHIO RAILROAD FROM THE STATION AT SILVER SPRING, MONTGOMERY
 HV1787'COUNTY, MARYLAND, ABOUT 400 FEET NORTH OF THE SITE OF THE OLD
 HV1787'NORTH TAKOMA STATION, AT THE CONCRETE OVERHEAD BRIDGE NEAR THE
 HV1787'FORMER BLISS ELECTRICAL SCHOOL (NOW MONTGOMERY JUNIOR COLLEGE), IN
 HV1787'THE TOP OF THE WEST END OF THE SOUTH WING WALL, 70 FEET WEST OF THE
 HV1787'CENTERLINE OF THE SOUTHBOUND TRACK, AND ABOUT 20 FEET HIGHER THAN
 HV1787'THE TOP OF THE RAIL.  A WASHINGTON SUBURBAN SANITARY DISTRICT
 HV1787'STANDARD COPPER BOLT AND WASHER, STAMPED WSSC 834.
 HV1787
 HV1787                          STATION RECOVERY (1951)
 HV1787
 HV1787'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 HV1787'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2789 ***********************************************************************
 JV2789  DESIGNATION -  841 WSSC
 JV2789  PID         -  JV2789
 JV2789  STATE/COUNTY-  MD/MONTGOMERY
 JV2789  COUNTRY     -  US
 JV2789  USGS QUAD   -  KENSINGTON (2016)
 JV2789
 JV2789                         *CURRENT SURVEY CONTROL
 JV2789  ______________________________________________________________________
 JV2789* NAD 83(1986) POSITION- 39 00 33.     (N) 077 02 43.     (W)   SCALED
 JV2789* NAVD 88 ORTHO HEIGHT -   112.85  (+/-2cm)      370.2   (feet) VERTCON3
 JV2789  ______________________________________________________________________
 JV2789  GEOID HEIGHT    -        -31.934 (meters)                     GEOID18
 JV2789  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2789
 JV2789.The horizontal coordinates were scaled from a map and have
 JV2789.an estimated accuracy of +/- 6 seconds.
 JV2789
 JV2789.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2789.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2789
 JV2789.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2789.GEOID18 height accuracy estimate available here.
 JV2789
 JV2789.The vertical order pertains to the NGVD 29 superseded value.
 JV2789
 JV2789.Click photographs - Photos may exist for this station.
 JV2789
 JV2789;                    North         East    Units  Estimated Accuracy
 JV2789;SPC MD       -   149,030.      396,080.      MT  (+/- 180 meters Scaled)
 JV2789
 JV2789_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ229197(NAD 83)
 JV2789
 JV2789                          SUPERSEDED SURVEY CONTROL
 JV2789
 JV2789  NGVD 29 (11/26/84)  113.064  (m)          370.94   (f) ADJUSTED    2 0
 JV2789
 JV2789.Superseded values are not recommended for survey control.
 JV2789
 JV2789.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2789.See file dsdata.pdf to determine how the superseded data were derived.
 JV2789
 JV2789_MARKER: Z = SEE DESCRIPTION
 JV2789_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2789_STAMPING: WSSC 841
 JV2789_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2789+STABILITY: SURFACE MOTION
 JV2789
 JV2789  HISTORY     - Date     Condition        Report By
 JV2789  HISTORY     - UNK      MONUMENTED       WSSC
 JV2789  HISTORY     - 1939     GOOD             WSSC
 JV2789
 JV2789                          STATION DESCRIPTION
 JV2789
 JV2789'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2789'AT MONTGOMERY.
 JV2789'ON BROOKVILLE ROAD, NEAR THE MONTGOMERY HILLS JUNIOR HIGH SCHOOL,
 JV2789'75 FEET NORTH OF THE ROAD AT A SHARP TURN SOUTHWEST, AND ON THE
 JV2789'EAST SIDE OF A LANE LEADING INTO AN OPEN FIELD NEAR A HOME FOR
 JV2789'CHILDREN. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2330 ***********************************************************************
 HV2330  DESIGNATION -  844 WSSC
 HV2330  PID         -  HV2330
 HV2330  STATE/COUNTY-  MD/MONTGOMERY
 HV2330  COUNTRY     -  US
 HV2330  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2330
 HV2330                         *CURRENT SURVEY CONTROL
 HV2330  ______________________________________________________________________
 HV2330* NAD 83(1986) POSITION- 38 59 37.     (N) 077 00 34.     (W)   SCALED
 HV2330* NAVD 88 ORTHO HEIGHT -    76.77  (+/-2cm)      251.9   (feet) VERTCON3
 HV2330  ______________________________________________________________________
 HV2330  GEOID HEIGHT    -        -31.999 (meters)                     GEOID18
 HV2330  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV2330
 HV2330.The horizontal coordinates were scaled from a map and have
 HV2330.an estimated accuracy of +/- 6 seconds.
 HV2330
 HV2330.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2330.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2330
 HV2330.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2330.GEOID18 height accuracy estimate available here.
 HV2330
 HV2330.The vertical order pertains to the NGVD 29 superseded value.
 HV2330
 HV2330.Click photographs - Photos may exist for this station.
 HV2330
 HV2330;                    North         East    Units  Estimated Accuracy
 HV2330;SPC MD       -   147,300.      399,180.      MT  (+/- 180 meters Scaled)
 HV2330
 HV2330_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ259179(NAD 83)
 HV2330
 HV2330                          SUPERSEDED SURVEY CONTROL
 HV2330
 HV2330  NGVD 29 (11/26/84)   76.984  (m)          252.57   (f) ADJUSTED    2 0
 HV2330
 HV2330.Superseded values are not recommended for survey control.
 HV2330
 HV2330.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2330.See file dsdata.pdf to determine how the superseded data were derived.
 HV2330
 HV2330_MARKER: Z = SEE DESCRIPTION
 HV2330_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2330_SP_SET: CHIMNEY
 HV2330_STAMPING: WSSC 844
 HV2330_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2330
 HV2330  HISTORY     - Date     Condition        Report By
 HV2330  HISTORY     - UNK      MONUMENTED       WSSC
 HV2330  HISTORY     - 1951     GOOD             CGS
 HV2330
 HV2330                          STATION DESCRIPTION
 HV2330
 HV2330'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2330'1 MI E FROM SILVER SPRING.
 HV2330'ON PINEY BRANCH ROAD, 0.2 MILE NORTHWEST OF THE JUNCTION OF
 HV2330'SLIGO AVENUE, AT SLIGO PARK HILLS, 150 FEET NORTH OF THE JUNCTION
 HV2330'OF NORTH PINE STREET, ON THE WEST SIDE OF THE ROAD, ON THE
 HV2330'SOUTH SIDE OF A FRAME HOUSE, AND IN THE BRICK CHIMNEY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1439 ***********************************************************************
 HV1439  DESIGNATION -  848 WSSC
 HV1439  PID         -  HV1439
 HV1439  STATE/COUNTY-  MD/MONTGOMERY
 HV1439  COUNTRY     -  US
 HV1439  USGS QUAD   -  BELTSVILLE (2016)
 HV1439
 HV1439                         *CURRENT SURVEY CONTROL
 HV1439  ______________________________________________________________________
 HV1439* NAD 83(1986) POSITION- 38 59 59.     (N) 076 59 26.     (W)   SCALED
 HV1439* NAVD 88 ORTHO HEIGHT -    59.29  (+/-2cm)      194.5   (feet) VERTCON3
 HV1439  ______________________________________________________________________
 HV1439  GEOID HEIGHT    -        -32.025 (meters)                     GEOID18
 HV1439  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1439
 HV1439.The horizontal coordinates were scaled from a map and have
 HV1439.an estimated accuracy of +/- 6 seconds.
 HV1439
 HV1439.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1439.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1439
 HV1439.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1439.GEOID18 height accuracy estimate available here.
 HV1439
 HV1439.The vertical order pertains to the NGVD 29 superseded value.
 HV1439
 HV1439.Click photographs - Photos may exist for this station.
 HV1439
 HV1439;                    North         East    Units  Estimated Accuracy
 HV1439;SPC MD       -   147,980.      400,820.      MT  (+/- 180 meters Scaled)
 HV1439
 HV1439_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ276186(NAD 83)
 HV1439
 HV1439                          SUPERSEDED SURVEY CONTROL
 HV1439
 HV1439  NGVD 29 (11/26/84)   59.502  (m)          195.22   (f) ADJUSTED    2 0
 HV1439
 HV1439.Superseded values are not recommended for survey control.
 HV1439
 HV1439.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1439.See file dsdata.pdf to determine how the superseded data were derived.
 HV1439
 HV1439_MARKER: Z = SEE DESCRIPTION
 HV1439_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1439_SP_SET: CULVERT
 HV1439_STAMPING: WSSC 848
 HV1439_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1439
 HV1439  HISTORY     - Date     Condition        Report By
 HV1439  HISTORY     - UNK      MONUMENTED       WSSC
 HV1439  HISTORY     - 1939     GOOD             WSSC
 HV1439  HISTORY     - 1951     MARK NOT FOUND   CGS
 HV1439
 HV1439                          STATION DESCRIPTION
 HV1439
 HV1439'DESCRIBED BY WASH SUBURB SAN COMM 1939
 HV1439'NEAR CLIFTON PARK VILLAGE.
 HV1439'ON PINEY BRANCH ROAD (STATE HIGHWAY 320), AT THE JUNCTION OF
 HV1439'CARROLL AVENUE EXTENDED, AT A CONCRETE CULVERT UNDER THE HIGHWAY,
 HV1439'AND IN THE TOP OF THE NORTH HEADWALL. LAG SCREW AND WASHER.
 HV1439
 HV1439                          STATION RECOVERY (1951)
 HV1439
 HV1439'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 HV1439'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL8735 ***********************************************************************
 DL8735  TIDAL BM    -  This is a Tidal Bench Mark.
 DL8735  DESIGNATION -  857 0280 11 11 RESET
 DL8735  PID         -  DL8735
 DL8735  STATE/COUNTY-  MD/WORCESTER
 DL8735  COUNTRY     -  US
 DL8735  USGS QUAD   -  OCEAN CITY (2016)
 DL8735
 DL8735                         *CURRENT SURVEY CONTROL
 DL8735  ______________________________________________________________________
 DL8735* NAD 83(2011) POSITION- 38 19 41.47556(N) 075 05 27.46074(W)   ADJUSTED
 DL8735* NAD 83(2011) ELLIP HT-   -34.313 (meters)        (06/05/19)   ADJUSTED
 DL8735* NAD 83(2011) EPOCH   -  2010.00
 DL8735* NAVD 88 ORTHO HEIGHT -     1.789 (meters)        5.87  (feet) ADJUSTED
 DL8735  ______________________________________________________________________
 DL8735  GEOID HEIGHT    -        -36.064 (meters)                     GEOID18
 DL8735  NAD 83(2011) X  -  1,288,971.414 (meters)                     COMP
 DL8735  NAD 83(2011) Y  - -4,841,237.057 (meters)                     COMP
 DL8735  NAD 83(2011) Z  -  3,934,064.501 (meters)                     COMP
 DL8735  LAPLACE CORR    -         -0.57  (seconds)                    DEFLEC18
 DL8735  DYNAMIC HEIGHT  -          1.787 (meters)        5.86  (feet) COMP
 DL8735  MODELED GRAVITY -    980,007.6   (mgal)                       NAVD 88
 DL8735
 DL8735  VERT ORDER      -  SECOND    CLASS I
 DL8735
 DL8735  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DL8735  Standards:
 DL8735         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DL8735            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DL8735  -------------------------------------------------------------------
 DL8735  NETWORK    1.02   0.94           0.49   0.29   0.48     -0.03526427
 DL8735  -------------------------------------------------------------------
 DL8735  Click here for local accuracies and other accuracy information.
 DL8735
 DL8735.The horizontal coordinates were established by GPS observations
 DL8735.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DL8735
 DL8735.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DL8735.been affixed to the stable North American tectonic plate. See 
 DL8735.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DL8735
 DL8735.The horizontal coordinates are valid at the epoch date displayed above
 DL8735.which is a decimal equivalence of Year/Month/Day.
 DL8735
 DL8735.The orthometric height was determined by differential leveling and
 DL8735.adjusted by the NATIONAL GEODETIC SURVEY
 DL8735.in August 2010.
 DL8735
 DL8735.No vertical observational check was made to the station.
 DL8735
 DL8735.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL8735.GEOID18 height accuracy estimate available here.
 DL8735
 DL8735.This Tidal Bench Mark is designated as VM 16830
 DL8735.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DL8735
 DL8735.Click photographs - Photos may exist for this station.
 DL8735
 DL8735.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DL8735
 DL8735.The Laplace correction was computed from DEFLEC18 derived deflections.
 DL8735
 DL8735.The ellipsoidal height was determined by GPS observations
 DL8735.and is referenced to NAD 83.
 DL8735
 DL8735.The dynamic height is computed by dividing the NAVD 88
 DL8735.geopotential number by the normal gravity value computed on the
 DL8735.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL8735.degrees latitude (g = 980.6199 gals.).
 DL8735
 DL8735.The modeled gravity was interpolated from observed gravity values.
 DL8735
 DL8735. The following values were computed from the NAD 83(2011) position.
 DL8735
 DL8735;                    North         East     Units Scale Factor Converg.
 DL8735;SPC MD       -    75,177.060   566,912.595   MT  0.99999522   +1 11 53.4
 DL8735;SPC MD       -   246,643.40  1,859,945.74   sFT  0.99999522   +1 11 53.4
 DL8735;UTM  18      - 4,242,233.056   492,049.560   MT  0.99960078   -0 03 23.1
 DL8735
 DL8735!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DL8735!SPC MD       -   1.00000538  x   0.99999522  =   1.00000060
 DL8735!UTM  18      -   1.00000538  x   0.99960078  =   0.99960616
 DL8735
 DL8735_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9204942233(NAD 83)
 DL8735
 DL8735                          SUPERSEDED SURVEY CONTROL
 DL8735
 DL8735.No superseded survey control is available for this station.
 DL8735
 DL8735_MARKER: DD = SURVEY DISK
 DL8735_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DL8735_SP_SET: SEA WALL
 DL8735_STAMPING: 11/11 RESET 2000
 DL8735_MARK LOGO: USACE
 DL8735_PROJECTION: FLUSH
 DL8735_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL8735_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL8735+STABILITY: SURFACE MOTION
 DL8735_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL8735+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2024
 DL8735
 DL8735  HISTORY     - Date     Condition        Report By
 DL8735  HISTORY     - 2000     MONUMENTED       USACE
 DL8735  HISTORY     - 20090514 GOOD             CO-OPS
 DL8735  HISTORY     - 20140923 GOOD             NPS
 DL8735  HISTORY     - 20150316 GOOD             NPS
 DL8735  HISTORY     - 20240720 GOOD             MDSHA
 DL8735
 DL8735                          STATION DESCRIPTION
 DL8735
 DL8735'DESCRIBED BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 DL8735'THE MARK IS LOCATED AT THE U.S. COAST GUARD STATION IN OCEAN CITY,
 DL8735'MARYLAND.
 DL8735'
 DL8735'IT IS SET IN THE BULKHEAD CAP ALONG THE BOAT BASIN, 9.65 M (31.7 FT)
 DL8735'SOUTHWEST OF THE NORTHWEST CORNER OF THE DOCK SHACK, 8.68 M (28.5 FT)
 DL8735'NORTHWEST OF A METAL LIGHT POLE, 0.85 M (2.8 FT) EAST OF THE NORTHWEST
 DL8735'CORNER OF THE DOCK, AND SET FLUSH IN THE CONCRETE DOCK.
 DL8735
 DL8735                          STATION RECOVERY (2014)
 DL8735
 DL8735'RECOVERY NOTE BY NATIONAL PARK SERVICE 2014 (NTW)
 DL8735'RECOVERED AS DESCRIBED.
 DL8735
 DL8735                          STATION RECOVERY (2015)
 DL8735
 DL8735'RECOVERY NOTE BY NATIONAL PARK SERVICE 2015 (NTW)
 DL8735'RECOVERED IN GOOD CONDITION.
 DL8735
 DL8735                          STATION RECOVERY (2024)
 DL8735
 DL8735'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 DL8735'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0267 ***********************************************************************
 HU0267  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0267  DESIGNATION -  857 0280 6
 HU0267  PID         -  HU0267
 HU0267  STATE/COUNTY-  MD/WORCESTER
 HU0267  COUNTRY     -  US
 HU0267  USGS QUAD   -  OCEAN CITY (2016)
 HU0267
 HU0267                         *CURRENT SURVEY CONTROL
 HU0267  ______________________________________________________________________
 HU0267* NAD 83(1986) POSITION- 38 19 44.8    (N) 075 05 13.1    (W)   HD_HELD2
 HU0267* NAVD 88 ORTHO HEIGHT -     2.183 (meters)        7.16  (feet) ADJUSTED
 HU0267  ______________________________________________________________________
 HU0267  GEOID HEIGHT    -        -36.064 (meters)                     GEOID18
 HU0267  DYNAMIC HEIGHT  -          2.182 (meters)        7.16  (feet) COMP
 HU0267  MODELED GRAVITY -    980,007.8   (mgal)                       NAVD 88
 HU0267
 HU0267  VERT ORDER      -  SECOND    CLASS I
 HU0267
 HU0267.The horizontal coordinates were established by autonomous hand held GPS
 HU0267.observations and have an estimated accuracy of +/- 10 meters.
 HU0267
 HU0267.The orthometric height was determined by differential leveling and
 HU0267.adjusted by the NATIONAL GEODETIC SURVEY
 HU0267.in June 1991.
 HU0267
 HU0267.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0267.GEOID18 height accuracy estimate available here.
 HU0267
 HU0267.This Tidal Bench Mark is designated as VM 403
 HU0267.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0267
 HU0267.This Tidal Bench Mark is designated as VM 3025
 HU0267.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0267
 HU0267.This Tidal Bench Mark is designated as VM 17700
 HU0267.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0267
 HU0267.Click photographs - Photos may exist for this station.
 HU0267
 HU0267.The dynamic height is computed by dividing the NAVD 88
 HU0267.geopotential number by the normal gravity value computed on the
 HU0267.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0267.degrees latitude (g = 980.6199 gals.).
 HU0267
 HU0267.The modeled gravity was interpolated from observed gravity values.
 HU0267
 HU0267;                    North         East    Units  Estimated Accuracy
 HU0267;SPC MD       -    75,287.      567,259.      MT  (+/- 10 meters HH2 GPS)
 HU0267
 HU0267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9239842335(NAD 83)
 HU0267
 HU0267                          SUPERSEDED SURVEY CONTROL
 HU0267
 HU0267  NGVD 29 (11/26/84)    2.429  (m)            7.97   (f) ADJUSTED    2 0
 HU0267
 HU0267.Superseded values are not recommended for survey control.
 HU0267
 HU0267.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0267.See file dsdata.pdf to determine how the superseded data were derived.
 HU0267
 HU0267_MARKER: DB = BENCH MARK DISK
 HU0267_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0267_SP_SET: CHIMEY FOUNDATION
 HU0267_STAMPING: 6 1931
 HU0267_MARK LOGO: CGS
 HU0267_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU0267_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0267_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0267+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2009
 HU0267
 HU0267  HISTORY     - Date     Condition        Report By
 HU0267  HISTORY     - 1931     MONUMENTED       CGS
 HU0267  HISTORY     - 1962     GOOD             CGS
 HU0267  HISTORY     - 1977     GOOD             MDDT
 HU0267  HISTORY     - 1991     GOOD             USPSQD
 HU0267  HISTORY     - 20040409 GOOD             MDSHA
 HU0267  HISTORY     - 20060523 GOOD             GEOCAC
 HU0267  HISTORY     - 20080519 GOOD             USACE
 HU0267  HISTORY     - 20090514 GOOD             CO-OPS
 HU0267
 HU0267                          STATION DESCRIPTION
 HU0267
 HU0267'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0267'AT OCEAN CITY.
 HU0267'117 FEET EAST OF THE EAST CURB OF BALTIMORE AVENUE, 21 FEET SOUTH
 HU0267'OF THE SOUTH CURB OF SOMERSET STREET AND 10 INCHES ABOVE THE LEVEL
 HU0267'OF THE GROUND.  SET IN A DRILL HOLE IN THE CONCRETE FOUNDATION OF
 HU0267'THE BRICK CHIMNEY AT THE NORTHWEST CORNER OF THE HOTEL ATLANTIC.
 HU0267'9 INCHES NORTH OF THE NORTH EDGE, 8 INCHES WEST OF THE WEST EDGE.
 HU0267'NOTE-- 1962 LEVELING INDICATED THAT THIS MARK HAD MOVED.
 HU0267
 HU0267                          STATION RECOVERY (1977)
 HU0267
 HU0267'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1977
 HU0267'RECOVERED IN GOOD CONDITION.
 HU0267
 HU0267                          STATION RECOVERY (1991)
 HU0267
 HU0267'RECOVERY NOTE BY US POWER SQUADRON 1991 (JES)
 HU0267'RECOVERED IN GOOD CONDITION.
 HU0267
 HU0267                          STATION RECOVERY (2004)
 HU0267
 HU0267'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (MRA)
 HU0267'RECOVERED IN GOOD CONDITION.
 HU0267
 HU0267                          STATION RECOVERY (2006)
 HU0267
 HU0267'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 HU0267'RECOVERED IN GOOD CONDITION.
 HU0267
 HU0267                          STATION RECOVERY (2008)
 HU0267
 HU0267'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2008 (JBC)
 HU0267'RECOVERED IN GOOD CONDITION.
 HU0267
 HU0267                          STATION RECOVERY (2009)
 HU0267
 HU0267'RECOVERY NOTE BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 HU0267'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL8731 ***********************************************************************
 DL8731  TIDAL BM    -  This is a Tidal Bench Mark.
 DL8731  DESIGNATION -  857 0280 J
 DL8731  PID         -  DL8731
 DL8731  STATE/COUNTY-  MD/WORCESTER
 DL8731  COUNTRY     -  US
 DL8731  USGS QUAD   -  OCEAN CITY (2016)
 DL8731
 DL8731                         *CURRENT SURVEY CONTROL
 DL8731  ______________________________________________________________________
 DL8731* NAD 83(1986) POSITION- 38 19 39.82   (N) 075 05 25.03   (W)   HD_HELD1
 DL8731* NAVD 88 ORTHO HEIGHT -     2.032 (meters)        6.67  (feet) ADJUSTED
 DL8731  ______________________________________________________________________
 DL8731  GEOID HEIGHT    -        -36.065 (meters)                     GEOID18
 DL8731  DYNAMIC HEIGHT  -          2.031 (meters)        6.66  (feet) COMP
 DL8731  MODELED GRAVITY -    980,007.6   (mgal)                       NAVD 88
 DL8731
 DL8731  VERT ORDER      -  SECOND    CLASS I
 DL8731
 DL8731.The horizontal coordinates were determined by differentially corrected
 DL8731.hand held GPS observations or other comparable positioning techniques
 DL8731.and have an estimated accuracy of +/- 3 meters.
 DL8731
 DL8731.The orthometric height was determined by differential leveling and
 DL8731.adjusted by the NATIONAL GEODETIC SURVEY
 DL8731.in August 2010.
 DL8731
 DL8731.No vertical observational check was made to the station.
 DL8731
 DL8731.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL8731.GEOID18 height accuracy estimate available here.
 DL8731
 DL8731.This Tidal Bench Mark is designated as VM 13880
 DL8731.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DL8731
 DL8731.Click photographs - Photos may exist for this station.
 DL8731
 DL8731.The dynamic height is computed by dividing the NAVD 88
 DL8731.geopotential number by the normal gravity value computed on the
 DL8731.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL8731.degrees latitude (g = 980.6199 gals.).
 DL8731
 DL8731.The modeled gravity was interpolated from observed gravity values.
 DL8731
 DL8731;                    North         East    Units  Estimated Accuracy
 DL8731;SPC MD       -    75,127.3     566,972.7     MT  (+/- 3 meters HH1 GPS) 
 DL8731
 DL8731_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9210842181(NAD 83)
 DL8731
 DL8731                          SUPERSEDED SURVEY CONTROL
 DL8731
 DL8731.No superseded survey control is available for this station.
 DL8731
 DL8731_MARKER: DJ = TIDAL STATION DISK
 DL8731_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 DL8731+WITH SETTING: INFORMATION.
 DL8731_STAMPING: 0280 J 1982
 DL8731_MARK LOGO: NOS
 DL8731_PROJECTION: RECESSED 9 CENTIMETERS
 DL8731_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL8731_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DL8731
 DL8731  HISTORY     - Date     Condition        Report By
 DL8731  HISTORY     - 1982     MONUMENTED       NOS
 DL8731  HISTORY     - 20090514 GOOD             CO-OPS
 DL8731  HISTORY     - 20140923 GOOD             NPS
 DL8731
 DL8731                          STATION DESCRIPTION
 DL8731
 DL8731'DESCRIBED BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 DL8731'THE MARK IS LOCATED AT THE U.S. COAST GUARD STATION IN OCEAN CITY,
 DL8731'MARYLAND.
 DL8731'
 DL8731'IT IS SET AT THE SOUTHEAST CORNER OF THE U.S. COAST GUARD STATION,
 DL8731'41.8 M (137.1 FT) WEST-SOUTHWEST OF A CHAIN LINK FENCE, 28.47 M (93.4
 DL8731'FT) SOUTHEAST OF THE EAST LEG OF A STEEL RADIO TOWER, 18.99 M (62.3
 DL8731'FT) SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF THE COAST GUARD
 DL8731'STATION, AND 4.63 M (15.2 FT) NORTH-NORTHEAST OF A WITNESS POST ALONG
 DL8731'THE SOUTHEAST SECTION OF THE CHAIN LINK FENCE.
 DL8731'
 DL8731'NOTE--ROD DEPTH IS UNKNOWN.
 DL8731
 DL8731                          STATION RECOVERY (2014)
 DL8731
 DL8731'RECOVERY NOTE BY NATIONAL PARK SERVICE 2014 (NTW)
 DL8731'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL8733 ***********************************************************************
 DL8733  TIDAL BM    -  This is a Tidal Bench Mark.
 DL8733  DESIGNATION -  857 0280 OC 1
 DL8733  PID         -  DL8733
 DL8733  STATE/COUNTY-  MD/WORCESTER
 DL8733  COUNTRY     -  US
 DL8733  USGS QUAD   -  OCEAN CITY (2016)
 DL8733
 DL8733                         *CURRENT SURVEY CONTROL
 DL8733  ______________________________________________________________________
 DL8733* NAD 83(1986) POSITION- 38 19 42.69   (N) 075 05 26.32   (W)   HD_HELD1
 DL8733* NAVD 88 ORTHO HEIGHT -     2.169 (meters)        7.12  (feet) ADJUSTED
 DL8733  ______________________________________________________________________
 DL8733  GEOID HEIGHT    -        -36.064 (meters)                     GEOID18
 DL8733  DYNAMIC HEIGHT  -          2.168 (meters)        7.11  (feet) COMP
 DL8733  MODELED GRAVITY -    980,007.6   (mgal)                       NAVD 88
 DL8733
 DL8733  VERT ORDER      -  SECOND    CLASS I
 DL8733
 DL8733.The horizontal coordinates were determined by differentially corrected
 DL8733.hand held GPS observations or other comparable positioning techniques
 DL8733.and have an estimated accuracy of +/- 3 meters.
 DL8733
 DL8733.The orthometric height was determined by differential leveling and
 DL8733.adjusted by the NATIONAL GEODETIC SURVEY
 DL8733.in July 2016.
 DL8733
 DL8733.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL8733.GEOID18 height accuracy estimate available here.
 DL8733
 DL8733.This Tidal Bench Mark is designated as VM 13877
 DL8733.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DL8733
 DL8733.Click photographs - Photos may exist for this station.
 DL8733
 DL8733.The dynamic height is computed by dividing the NAVD 88
 DL8733.geopotential number by the normal gravity value computed on the
 DL8733.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL8733.degrees latitude (g = 980.6199 gals.).
 DL8733
 DL8733.The modeled gravity was interpolated from observed gravity values.
 DL8733
 DL8733;                    North         East    Units  Estimated Accuracy
 DL8733;SPC MD       -    75,215.1     566,939.5     MT  (+/- 3 meters HH1 GPS) 
 DL8733
 DL8733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9207742270(NAD 83)
 DL8733
 DL8733                          SUPERSEDED SURVEY CONTROL
 DL8733
 DL8733  NAVD 88 (08/19/10)    2.172  (m)            7.13   (f) SUPERSEDED  2 1
 DL8733
 DL8733.Superseded values are not recommended for survey control.
 DL8733
 DL8733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DL8733.See file dsdata.pdf to determine how the superseded data were derived.
 DL8733
 DL8733_MARKER: DB = BENCH MARK DISK
 DL8733_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DL8733_SP_SET: RETAINING WALL
 DL8733_STAMPING: OC 1 1997
 DL8733_MARK LOGO: NOS
 DL8733_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL8733_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL8733+STABILITY: SURFACE MOTION
 DL8733_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL8733+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2014
 DL8733
 DL8733  HISTORY     - Date     Condition        Report By
 DL8733  HISTORY     - 1997     MONUMENTED       NOS
 DL8733  HISTORY     - 20090514 GOOD             CO-OPS
 DL8733  HISTORY     - 20140923 GOOD             NPS
 DL8733
 DL8733                          STATION DESCRIPTION
 DL8733
 DL8733'DESCRIBED BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 DL8733'THE MARK IS LOCATED IN OCEAN CITY AT THE OCEAN CITY COAST GUARD
 DL8733'STATION.
 DL8733'
 DL8733'IT IS SET IN THE EAST CORNER OF A 0.6 M (2.0 FT) HIGH CONCRETE KNEE
 DL8733'WALL SURROUNDING THE FUEL STORAGE TANKS, 21.50 M (70.5 FT) SOUTH OF
 DL8733'THE NORTH SIDE OF A 2 M (6.6 FT) BLACK CHAIN LINK FENCE AROUND THE
 DL8733'PROPERTY, 20.10 M (65.9 FT) EAST OF THE SOUTHWEST FACE OF THE CONCRETE
 DL8733'BULKHEAD AND 12.83 M (42.1 FT) NORTH OF THE CENTER OF A PAVED ROAD
 DL8733'LEADING TO THE DOCKS.
 DL8733
 DL8733                          STATION RECOVERY (2014)
 DL8733
 DL8733'RECOVERY NOTE BY NATIONAL PARK SERVICE 2014 (NTW)
 DL8733'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL8734 ***********************************************************************
 DL8734  TIDAL BM    -  This is a Tidal Bench Mark.
 DL8734  DESIGNATION -  857 0280 OC 2
 DL8734  PID         -  DL8734
 DL8734  STATE/COUNTY-  MD/WORCESTER
 DL8734  COUNTRY     -  US
 DL8734  USGS QUAD   -  OCEAN CITY (2016)
 DL8734
 DL8734                         *CURRENT SURVEY CONTROL
 DL8734  ______________________________________________________________________
 DL8734* NAD 83(1986) POSITION- 38 19 40.21   (N) 075 05 26.68   (W)   HD_HELD1
 DL8734* NAVD 88 ORTHO HEIGHT -     2.009 (meters)        6.59  (feet) ADJUSTED
 DL8734  ______________________________________________________________________
 DL8734  GEOID HEIGHT    -        -36.065 (meters)                     GEOID18
 DL8734  DYNAMIC HEIGHT  -          2.008 (meters)        6.59  (feet) COMP
 DL8734  MODELED GRAVITY -    980,007.6   (mgal)                       NAVD 88
 DL8734
 DL8734  VERT ORDER      -  SECOND    CLASS I
 DL8734
 DL8734.The horizontal coordinates were determined by differentially corrected
 DL8734.hand held GPS observations or other comparable positioning techniques
 DL8734.and have an estimated accuracy of +/- 3 meters.
 DL8734
 DL8734.The orthometric height was determined by differential leveling and
 DL8734.adjusted by the NATIONAL GEODETIC SURVEY
 DL8734.in July 2016.
 DL8734
 DL8734.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL8734.GEOID18 height accuracy estimate available here.
 DL8734
 DL8734.This Tidal Bench Mark is designated as VM 13878
 DL8734.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DL8734
 DL8734.Click photographs - Photos may exist for this station.
 DL8734
 DL8734.The dynamic height is computed by dividing the NAVD 88
 DL8734.geopotential number by the normal gravity value computed on the
 DL8734.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL8734.degrees latitude (g = 980.6199 gals.).
 DL8734
 DL8734.The modeled gravity was interpolated from observed gravity values.
 DL8734
 DL8734;                    North         East    Units  Estimated Accuracy
 DL8734;SPC MD       -    75,138.4     566,932.4     MT  (+/- 3 meters HH1 GPS) 
 DL8734
 DL8734_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9206842194(NAD 83)
 DL8734
 DL8734                          SUPERSEDED SURVEY CONTROL
 DL8734
 DL8734  NAVD 88 (08/19/10)    2.028  (m)            6.65   (f) SUPERSEDED  2 1
 DL8734
 DL8734.Superseded values are not recommended for survey control.
 DL8734
 DL8734.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DL8734.See file dsdata.pdf to determine how the superseded data were derived.
 DL8734
 DL8734_MARKER: DJ = TIDAL STATION DISK
 DL8734_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 DL8734+WITH SETTING: PAVEMENT
 DL8734_SP_SET: LIGHT POLE BASE
 DL8734_STAMPING: OC 2
 DL8734_MARK LOGO: NOS
 DL8734_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL8734_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL8734+STABILITY: SURFACE MOTION
 DL8734_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DL8734+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2014
 DL8734
 DL8734  HISTORY     - Date     Condition        Report By
 DL8734  HISTORY     - 1997     MONUMENTED       NOS
 DL8734  HISTORY     - 20090514 GOOD             CO-OPS
 DL8734  HISTORY     - 20140923 GOOD             NPS
 DL8734
 DL8734                          STATION DESCRIPTION
 DL8734
 DL8734'DESCRIBED BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 DL8734'THE MARK IS LOCATED AT THE OCEAN CITY COAST GUARD STATION.
 DL8734'
 DL8734'IT IS 14.04 M (46.1 FT) SOUTH-SOUTHWEST OF THE SOUTHEAST CORNER OF A
 DL8734'METAL BUILDING, 12.59 M (41.3 FT) WEST-SOUTHWEST OF THE SOUTHWEST LEG
 DL8734'OF A THREE-LEGGED RADIO TOWER, 7.05 M (23.1 FT) NORTH-NORTHEAST OF THE
 DL8734'SOUTH FENCE LINE OF THE PROPERTY AND SET IN A CONCRETE LIGHT POLE BASE
 DL8734'ABOUT 0.08 M (0.3 FT) ABOVE THE GROUND.
 DL8734
 DL8734                          STATION RECOVERY (2014)
 DL8734
 DL8734'RECOVERY NOTE BY NATIONAL PARK SERVICE 2014 (NTW)
 DL8734'RECOVERED AS DESCRIBED.
 DL8734'
 DL8734'NOTE-THE CONCRETE LAMP POST IS TILTED ALONG WITH THE LAMP POST BASE
 DL8734'SUGGESTING THE BENCH MARK IS UNSTABLE AND WILL POSSIBLY MOVE DURING A
 DL8734'STRONG WIND EVENTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL8736 ***********************************************************************
 DL8736  TIDAL BM    -  This is a Tidal Bench Mark.
 DL8736  DESIGNATION -  857 0280 OCM 1B
 DL8736  PID         -  DL8736
 DL8736  STATE/COUNTY-  MD/WORCESTER
 DL8736  COUNTRY     -  US
 DL8736  USGS QUAD   -  OCEAN CITY (2016)
 DL8736
 DL8736                         *CURRENT SURVEY CONTROL
 DL8736  ______________________________________________________________________
 DL8736* NAD 83(1986) POSITION- 38 19 34.9    (N) 075 05 19.5    (W)   HD_HELD2
 DL8736* NAVD 88 ORTHO HEIGHT -     1.407 (meters)        4.62  (feet) ADJUSTED
 DL8736  ______________________________________________________________________
 DL8736  GEOID HEIGHT    -        -36.067 (meters)                     GEOID18
 DL8736  DYNAMIC HEIGHT  -          1.406 (meters)        4.61  (feet) COMP
 DL8736  MODELED GRAVITY -    980,007.4   (mgal)                       NAVD 88
 DL8736
 DL8736  VERT ORDER      -  SECOND    CLASS I
 DL8736
 DL8736.The horizontal coordinates were established by autonomous hand held GPS
 DL8736.observations and have an estimated accuracy of +/- 10 meters.
 DL8736
 DL8736.The orthometric height was determined by differential leveling and
 DL8736.adjusted by the NATIONAL GEODETIC SURVEY
 DL8736.in August 2010.
 DL8736
 DL8736.No vertical observational check was made to the station.
 DL8736
 DL8736.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL8736.GEOID18 height accuracy estimate available here.
 DL8736
 DL8736.This Tidal Bench Mark is designated as VM 16831
 DL8736.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DL8736
 DL8736.Click photographs - Photos may exist for this station.
 DL8736
 DL8736.The dynamic height is computed by dividing the NAVD 88
 DL8736.geopotential number by the normal gravity value computed on the
 DL8736.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL8736.degrees latitude (g = 980.6199 gals.).
 DL8736
 DL8736.The modeled gravity was interpolated from observed gravity values.
 DL8736
 DL8736;                    North         East    Units  Estimated Accuracy
 DL8736;SPC MD       -    74,978.      567,110.      MT  (+/- 10 meters HH2 GPS)
 DL8736
 DL8736_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9224242030(NAD 83)
 DL8736
 DL8736                          SUPERSEDED SURVEY CONTROL
 DL8736
 DL8736.No superseded survey control is available for this station.
 DL8736
 DL8736_MARKER: DD = SURVEY DISK
 DL8736_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DL8736_SP_SET: SIDEWALK
 DL8736_STAMPING: OCM 1B 99
 DL8736_MARK LOGO: USACE
 DL8736_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL8736_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DL8736
 DL8736  HISTORY     - Date     Condition        Report By
 DL8736  HISTORY     - 1999     MONUMENTED       DOD
 DL8736  HISTORY     - 20090514 GOOD             CO-OPS
 DL8736  HISTORY     - 20101003 GOOD             NGS
 DL8736  HISTORY     - 20140923 GOOD             NPS
 DL8736
 DL8736                          STATION DESCRIPTION
 DL8736
 DL8736'DESCRIBED BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 DL8736'THE MARK IS LOCATED IN OCEAN CITY, MARYLAND AT THE INTERSECTION OF
 DL8736'BALTIMORE AVENUE AND SOUTH FIRST STREET.
 DL8736'
 DL8736'IT IS SET IN THE SIDEWALK AT THE SOUTHEAST CORNER OF THE INTERSECTION,
 DL8736'9.75 M (32.0 FT) EAST OF THE CENTER MEDIAN OF BALTIMORE STREET, 8.45 M
 DL8736'(27.7 FT) SOUTH OF THE CENTERLINE OF SOUTH FIRST STREET AND 2.43 M
 DL8736'(8.0 FT) NORTH-NORTHWEST OF THE CENTER OF A SIGN FOR THE INLET LODGE.
 DL8736
 DL8736                          STATION RECOVERY (2010)
 DL8736
 DL8736'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 DL8736'RECOVERED IN GOOD CONDITION.
 DL8736
 DL8736                          STATION RECOVERY (2014)
 DL8736
 DL8736'RECOVERY NOTE BY NATIONAL PARK SERVICE 2014 (NTW)
 DL8736'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2732 ***********************************************************************
 HU2732  CBN         -  This is a Cooperative Base Network Control Station.
 HU2732  TIDAL BM    -  This is a Tidal Bench Mark.
 HU2732  DESIGNATION -  857 0280 TIDAL 3 RESET
 HU2732  PID         -  HU2732
 HU2732  STATE/COUNTY-  MD/WORCESTER
 HU2732  COUNTRY     -  US
 HU2732  USGS QUAD   -  OCEAN CITY (2016)
 HU2732
 HU2732                         *CURRENT SURVEY CONTROL
 HU2732  ______________________________________________________________________
 HU2732* NAD 83(2011) POSITION- 38 19 50.13112(N) 075 05 21.11826(W)   ADJUSTED
 HU2732* NAD 83(2011) ELLIP HT-   -35.355 (meters)        (06/27/12)   ADJUSTED
 HU2732* NAD 83(2011) EPOCH   -  2010.00
 HU2732* NAVD 88 ORTHO HEIGHT -     0.68  (meters)        2.2   (feet) RESET
 HU2732  ______________________________________________________________________
 HU2732  GEOID HEIGHT    -        -36.062 (meters)                     GEOID18
 HU2732  NAD 83(2011) X  -  1,289,077.477 (meters)                     COMP
 HU2732  NAD 83(2011) Y  - -4,841,036.687 (meters)                     COMP
 HU2732  NAD 83(2011) Z  -  3,934,273.215 (meters)                     COMP
 HU2732  LAPLACE CORR    -         -0.58  (seconds)                    DEFLEC18
 HU2732  VERT ORDER      -  THIRD
 HU2732
 HU2732  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2732  Standards:
 HU2732         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2732            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2732  -------------------------------------------------------------------
 HU2732  NETWORK    3.63  10.82           1.52   1.43   5.52      0.19810380
 HU2732  -------------------------------------------------------------------
 HU2732  Click here for local accuracies and other accuracy information.
 HU2732
 HU2732.The horizontal coordinates were established by GPS observations
 HU2732.and adjusted by the National Geodetic Survey in June 2012.
 HU2732
 HU2732.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2732.been affixed to the stable North American tectonic plate. See 
 HU2732.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2732
 HU2732.The horizontal coordinates are valid at the epoch date displayed above
 HU2732.which is a decimal equivalence of Year/Month/Day.
 HU2732
 HU2732.The orthometric height was computed from unverified reset data.
 HU2732
 HU2732.No vertical observational check was made to the station.
 HU2732
 HU2732.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2732.GEOID18 height accuracy estimate available here.
 HU2732
 HU2732.This Tidal Bench Mark is designated as VM 3023
 HU2732.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU2732
 HU2732.Click photographs - Photos may exist for this station.
 HU2732
 HU2732.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2732
 HU2732.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2732
 HU2732.The ellipsoidal height was determined by GPS observations
 HU2732.and is referenced to NAD 83.
 HU2732
 HU2732. The following values were computed from the NAD 83(2011) position.
 HU2732
 HU2732;                    North         East     Units Scale Factor Converg.
 HU2732;SPC MD       -    75,447.109   567,061.026   MT  0.99999482   +1 11 57.4
 HU2732;SPC MD       -   247,529.39  1,860,432.72   sFT  0.99999482   +1 11 57.4
 HU2732;UTM  18      - 4,242,499.685   492,203.807   MT  0.99960075   -0 03 19.2
 HU2732
 HU2732!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2732!SPC MD       -   1.00000555  x   0.99999482  =   1.00000037
 HU2732!UTM  18      -   1.00000555  x   0.99960075  =   0.99960630
 HU2732
 HU2732_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9220342499(NAD 83)
 HU2732
 HU2732                          SUPERSEDED SURVEY CONTROL
 HU2732
 HU2732  NAD 83(2007)-  38 19 50.13144(N)    075 05 21.11915(W) AD(2002.00) 0
 HU2732  ELLIP H (02/10/07)  -35.309  (m)                       GP(2002.00)    
 HU2732  ELLIP H (08/09/02)  -35.313  (m)                       GP(       ) 4 2
 HU2732  NAD 83(1991)-  38 19 50.13161(N)    075 05 21.11830(W) AD(       ) B
 HU2732  ELLIP H (10/23/91)  -35.318  (m)                       GP(       ) 4 1
 HU2732  NGVD 29 (11/18/05)    0.92   (m)            3.0    (f) RESET       3  
 HU2732  NGVD 29 (10/23/91)    0.9    (m)  UNKNOWN  model used  GPS OBS        
 HU2732
 HU2732.Superseded values are not recommended for survey control.
 HU2732
 HU2732.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2732.See file dsdata.pdf to determine how the superseded data were derived.
 HU2732
 HU2732_MARKER: DJ = TIDAL STATION DISK
 HU2732_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU2732_SP_SET: SIDEWALK
 HU2732_STAMPING: NO 3 1975
 HU2732_MARK LOGO: NOS
 HU2732_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2732_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2732_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2732+SATELLITE: SATELLITE OBSERVATIONS - January 10, 1991
 HU2732
 HU2732  HISTORY     - Date     Condition        Report By
 HU2732  HISTORY     - 1975     MONUMENTED       NOS
 HU2732  HISTORY     - 19860707 GOOD             NGS
 HU2732  HISTORY     - 19910110 GOOD             NGS
 HU2732  HISTORY     - 20040409 MARK NOT FOUND   MDSHA
 HU2732  HISTORY     - 20060523 MARK NOT FOUND   GEOCAC
 HU2732
 HU2732                          STATION DESCRIPTION
 HU2732
 HU2732'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 HU2732'FROM THE POST OFFICE IN OCEAN CITY, GO 0.75 KM (0.45 MI) SOUTH ALONG
 HU2732'STATE HIGHWAY 528 (PHILADELPHIA AVEUNUE) TO A CROSSROADS, TURN RIGHT
 HU2732'AND GO WEST ON DORCHESTER STREET FOR 0.1 KM (0.05 MI) TO A CROSSROADS
 HU2732'AND MARK ON RIGHT, IN THE SIDEWALK,  2.3 METERS (7.7 FT) SOUTHEAST
 HU2732'OF SOUTHEAST CURB OF ST LOUIS AVENUE, 1.2 METERS (4.0 FT) NORTHEAST
 HU2732'OF NORTHEAST CURB OF DORCHESTER STREET, 15.2 METERS (49.9, FT)
 HU2732'SOUTHEAST OF A POWERLINE POLE NO 61466 91825, AND 3.0 METERS
 HU2732'(9.7 FT) EAST OF A DRAINAGE INLET.
 HU2732
 HU2732                          STATION RECOVERY (1991)
 HU2732
 HU2732'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU2732'STATION IS LOCATED IN THE CENTRAL SECTION OF OCEAN CITY, 0.15 KM
 HU2732'(0.09 MI) SOUTH OF US HIGHWAY 50, IN THE EAST ANGLE AT INTERSECTION
 HU2732'OF DORCHESTER AND ST LOUIS STREETS, IN A SIDEWALK, AND AT THE WEST
 HU2732'CORNER OF A PAVED PARKING LOT ADJACENT TO THE OCEAN CITY MARLIN CLUB.
 HU2732'OWNERSHIP--CITY OF OCEAN CITY.
 HU2732'TO REACH FROM THE CENTER OF THE DRAW SPAN OF THE HIGHWAY 50 BRIDGE
 HU2732'(HARRY W. KELLEY MEMORIAL BRIDGE) WHEN ENTERING OCEAN CITY, GO EAST
 HU2732'ON HIGHWAY 50 FOR 0.24 KM (0.15 MI) TO A FORK.  BEAR RIGHT,
 HU2732'SOUTHWEST, ON PHILADELPHIA AVENUE FOR 0.16 KM (0.10 MI) TO A CROSS
 HU2732'STREET.  TURN RIGHT, NORTHWEST, ON DORCHESTER STREET FOR 0.09 KM
 HU2732'(0.06 MI) TO ST LOUIS STREET AND THE STATION ON THE CORNER ON THE
 HU2732'RIGHT.
 HU2732'STATION MARK IS SET IN A DRILL HOLE IN THE CONCRETE SIDEWALK.  IT IS
 HU2732'1.2 M (3.9 FT) NORTHEAST OF THE DORCHESTER STREET CURB, 2.3 M
 HU2732'(7.5 FT) SOUTHEAST OF THE ST LOUIS STREET CURB, AND 0.8 M (2.6 FT)
 HU2732'SOUTH OF A 10-CM PIPE CORNER POST FOR THE PARKING LOT.
 HU2732'DESCRIBED BY G.R.HEID.
 HU2732
 HU2732                          STATION RECOVERY (2004)
 HU2732
 HU2732'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (MRA)
 HU2732'CONCRETE SIDEWALK HAS BEEN REPLACED.
 HU2732
 HU2732                          STATION RECOVERY (2006)
 HU2732
 HU2732'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 HU2732'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7886 ***********************************************************************
 DH7886  DESIGNATION -  857 0649 A TIDAL
 DH7886  PID         -  DH7886
 DH7886  STATE/COUNTY-  MD/WORCESTER
 DH7886  COUNTRY     -  US
 DH7886  USGS QUAD   -  PUBLIC LANDING (2016)
 DH7886
 DH7886                         *CURRENT SURVEY CONTROL
 DH7886  ______________________________________________________________________
 DH7886* NAD 83(1986) POSITION- 38 08 57.16   (N) 075 17 14.23   (W)   HD_HELD1
 DH7886* NAVD 88 ORTHO HEIGHT -     2.958 (meters)        9.70  (feet) ADJUSTED
 DH7886  ______________________________________________________________________
 DH7886  GEOID HEIGHT    -        -36.282 (meters)                     GEOID18
 DH7886  DYNAMIC HEIGHT  -          2.956 (meters)        9.70  (feet) COMP
 DH7886  MODELED GRAVITY -    979,983.5   (mgal)                       NAVD 88
 DH7886
 DH7886  VERT ORDER      -  SECOND    CLASS I
 DH7886
 DH7886.The horizontal coordinates were determined by differentially corrected
 DH7886.hand held GPS observations or other comparable positioning techniques
 DH7886.and have an estimated accuracy of +/- 3 meters.
 DH7886
 DH7886.The orthometric height was determined by differential leveling and
 DH7886.adjusted by the NATIONAL GEODETIC SURVEY
 DH7886.in June 2006.
 DH7886
 DH7886.No vertical observational check was made to the station.
 DH7886
 DH7886.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7886.GEOID18 height accuracy estimate available here.
 DH7886
 DH7886.Click photographs - Photos may exist for this station.
 DH7886
 DH7886.The dynamic height is computed by dividing the NAVD 88
 DH7886.geopotential number by the normal gravity value computed on the
 DH7886.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7886.degrees latitude (g = 980.6199 gals.).
 DH7886
 DH7886.The modeled gravity was interpolated from observed gravity values.
 DH7886
 DH7886;                    North         East    Units  Estimated Accuracy
 DH7886;SPC MD       -    54,973.2     550,122.2     MT  (+/- 3 meters HH1 GPS) 
 DH7886
 DH7886_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7482822409(NAD 83)
 DH7886
 DH7886                          SUPERSEDED SURVEY CONTROL
 DH7886
 DH7886.No superseded survey control is available for this station.
 DH7886
 DH7886_MARKER: DJ = TIDAL STATION DISK
 DH7886_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DH7886_SP_SET: STEP
 DH7886_STAMPING: 0649 A 1985
 DH7886_MARK LOGO: NOS
 DH7886_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH7886_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH7886_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DH7886+SATELLITE: SATELLITE OBSERVATIONS - October 03, 2010
 DH7886
 DH7886  HISTORY     - Date     Condition        Report By
 DH7886  HISTORY     - 1985     MONUMENTED       NOS
 DH7886  HISTORY     - 20031217 GOOD             MDSHA
 DH7886  HISTORY     - 20101003 GOOD             NGS
 DH7886
 DH7886                          STATION DESCRIPTION
 DH7886
 DH7886'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 DH7886'THE STATION IS LOCATED IN THE TOWN OF PUBLIC LANDING. TO REACH THE
 DH7886'STATION FROM THE COURTHOUSE IN SNOW HILL, GO NORTHEAST ALONG BUSINESS
 DH7886'U.S. 113 FOR 0.15 MI (0.24 KM) TO STATE HIGHWAY 365. TURN RIGHT AND GO
 DH7886'SOUTHEAST ALONG STATE HIGHWAY 365 FOR 5.3 MI (8.53 KM) TO PUBLIC
 DH7886'LANDING. THE STATION IN NOS TIDAL BENCH MARK DISK SET FLUSH IN THE
 DH7886'BOTTOM CONCRETE STEP ON THE SOUTH SIDE OF THE DRISCOLL RESIDENCE, 37.3
 DH7886'FT (11.4 M) SOUTHEAST OF THE EXTENDED CENTER LINE OF BAYSIDE ROAD,
 DH7886'27.3 FT (8.3 M) NORTHWEST OF A 24 INCH (61 CM) CEDAR TREE, 25.3 FT
 DH7886'(7.7 M) NORTHEAST OF THE CENTER LINE OF STATE HIGHWAY 365.  NOTE= VM
 DH7886'NUMBER
 DH7886
 DH7886                          STATION RECOVERY (2010)
 DH7886
 DH7886'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 DH7886'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7884 ***********************************************************************
 DH7884  DESIGNATION -  857 0649 C TIDAL
 DH7884  PID         -  DH7884
 DH7884  STATE/COUNTY-  MD/WORCESTER
 DH7884  COUNTRY     -  US
 DH7884  USGS QUAD   -  PUBLIC LANDING (2016)
 DH7884
 DH7884                         *CURRENT SURVEY CONTROL
 DH7884  ______________________________________________________________________
 DH7884* NAD 83(1986) POSITION- 38 09 00.69   (N) 075 17 19.70   (W)   HD_HELD1
 DH7884* NAVD 88 ORTHO HEIGHT -     3.321 (meters)       10.90  (feet) ADJUSTED
 DH7884  ______________________________________________________________________
 DH7884  GEOID HEIGHT    -        -36.281 (meters)                     GEOID18
 DH7884  DYNAMIC HEIGHT  -          3.318 (meters)       10.89  (feet) COMP
 DH7884  MODELED GRAVITY -    979,983.5   (mgal)                       NAVD 88
 DH7884
 DH7884  VERT ORDER      -  SECOND    CLASS I
 DH7884
 DH7884.The horizontal coordinates were determined by differentially corrected
 DH7884.hand held GPS observations or other comparable positioning techniques
 DH7884.and have an estimated accuracy of +/- 3 meters.
 DH7884
 DH7884.The orthometric height was determined by differential leveling and
 DH7884.adjusted by the NATIONAL GEODETIC SURVEY
 DH7884.in June 2006.
 DH7884
 DH7884.No vertical observational check was made to the station.
 DH7884
 DH7884.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7884.GEOID18 height accuracy estimate available here.
 DH7884
 DH7884.Click photographs - Photos may exist for this station.
 DH7884
 DH7884.The dynamic height is computed by dividing the NAVD 88
 DH7884.geopotential number by the normal gravity value computed on the
 DH7884.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7884.degrees latitude (g = 980.6199 gals.).
 DH7884
 DH7884.The modeled gravity was interpolated from observed gravity values.
 DH7884
 DH7884;                    North         East    Units  Estimated Accuracy
 DH7884;SPC MD       -    55,079.6     549,987.0     MT  (+/- 3 meters HH1 GPS) 
 DH7884
 DH7884_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7469522518(NAD 83)
 DH7884
 DH7884                          SUPERSEDED SURVEY CONTROL
 DH7884
 DH7884.No superseded survey control is available for this station.
 DH7884
 DH7884_MARKER: DJ = TIDAL STATION DISK
 DH7884_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DH7884_STAMPING: 0649 1985 C
 DH7884_MARK LOGO: NOS
 DH7884_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH7884_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH7884_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7884+SATELLITE: SATELLITE OBSERVATIONS - October 03, 2010
 DH7884
 DH7884  HISTORY     - Date     Condition        Report By
 DH7884  HISTORY     - 1985     MONUMENTED       NOS
 DH7884  HISTORY     - 20031217 GOOD             MDSHA
 DH7884  HISTORY     - 20101003 GOOD             NGS
 DH7884
 DH7884                          STATION DESCRIPTION
 DH7884
 DH7884'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 DH7884'THE STATION IS LOCATED IN THE TOWN OF PUBLIC LANDING. TO REACH THE
 DH7884'STATION FROM THE COURTHOUSE IN SNOW HILL, GO NORTHEAST ALONG BUSINESS
 DH7884'U.S. 113 FOR 0.15 MI (0.24 KM) TO STATE HIGHWAY 365. TURN RIGHT AND GO
 DH7884'SOUTHEAST ALONG STATE HIGHWAY 365 FOR 5.3 MI (8.53 KM) TO PUBLIC
 DH7884'LANDING. THE STATION IN NOS TIDAL BENCH MARK DISK CRIMPED TO A
 DH7884'STAINLESS STEEL ROD DRIVEN AN UNSPECIFIED DEPTH AND ENCASED IN A 5
 DH7884'INCH (13 CM) PVC PIPE AND CONCRETE KICKBLOCK.  IT IS 91.0 FT (27.7 M)
 DH7884'NORTHWEST OF THE CENTER LINE OF OUTTEN ROAD, 39.0 FT (11.9 M)
 DH7884'NORTHEAST OF THE CENTER LINE OF STATE HIGHWAY 365 AND 2.3 FT (0.7 M)
 DH7884'SOUTHWEST OF POWER POLE 120 AND ABOUT 0.5 FT (0.2 M) BELOW THE GROUND
 DH7884'LEVEL. NOTE=VM NUMBER 3036
 DH7884
 DH7884                          STATION RECOVERY (2010)
 DH7884
 DH7884'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 DH7884'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7883 ***********************************************************************
 DH7883  DESIGNATION -  857 0649 D TIDAL
 DH7883  PID         -  DH7883
 DH7883  STATE/COUNTY-  MD/WORCESTER
 DH7883  COUNTRY     -  US
 DH7883  USGS QUAD   -  PUBLIC LANDING (2016)
 DH7883
 DH7883                         *CURRENT SURVEY CONTROL
 DH7883  ______________________________________________________________________
 DH7883* NAD 83(1986) POSITION- 38 09 03.6    (N) 075 17 24.5    (W)   HD_HELD2
 DH7883* NAVD 88 ORTHO HEIGHT -     3.814 (meters)       12.51  (feet) ADJUSTED
 DH7883  ______________________________________________________________________
 DH7883  GEOID HEIGHT    -        -36.279 (meters)                     GEOID18
 DH7883  DYNAMIC HEIGHT  -          3.812 (meters)       12.51  (feet) COMP
 DH7883  MODELED GRAVITY -    979,983.6   (mgal)                       NAVD 88
 DH7883
 DH7883  VERT ORDER      -  SECOND    CLASS I
 DH7883
 DH7883.The horizontal coordinates were established by autonomous hand held GPS
 DH7883.observations and have an estimated accuracy of +/- 10 meters.
 DH7883
 DH7883.The orthometric height was determined by differential leveling and
 DH7883.adjusted by the NATIONAL GEODETIC SURVEY
 DH7883.in June 2006.
 DH7883
 DH7883.No vertical observational check was made to the station.
 DH7883
 DH7883.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7883.GEOID18 height accuracy estimate available here.
 DH7883
 DH7883.Click photographs - Photos may exist for this station.
 DH7883
 DH7883.The dynamic height is computed by dividing the NAVD 88
 DH7883.geopotential number by the normal gravity value computed on the
 DH7883.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7883.degrees latitude (g = 980.6199 gals.).
 DH7883
 DH7883.The modeled gravity was interpolated from observed gravity values.
 DH7883
 DH7883;                    North         East    Units  Estimated Accuracy
 DH7883;SPC MD       -    55,167.      549,868.      MT  (+/- 10 meters HH2 GPS)
 DH7883
 DH7883_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7457822608(NAD 83)
 DH7883
 DH7883                          SUPERSEDED SURVEY CONTROL
 DH7883
 DH7883.No superseded survey control is available for this station.
 DH7883
 DH7883_MARKER: DJ = TIDAL STATION DISK
 DH7883_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DH7883_STAMPING: 0649 D 1985
 DH7883_MARK LOGO: NOS
 DH7883_PROJECTION: RECESSED
 DH7883_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH7883_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH7883_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7883+SATELLITE: SATELLITE OBSERVATIONS - November 25, 2013
 DH7883_ROD/PIPE-DEPTH: 9.8 meters
 DH7883
 DH7883  HISTORY     - Date     Condition        Report By
 DH7883  HISTORY     - 1985     MONUMENTED       NOS
 DH7883  HISTORY     - 20031217 GOOD             MDSHA
 DH7883  HISTORY     - 20131125 GOOD             WATER
 DH7883
 DH7883                          STATION DESCRIPTION
 DH7883
 DH7883'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 DH7883'THE STATION IS LOCATED IN THE TOWN OF PUBLIC LANDING. TO REACH THE
 DH7883'STATION FROM THE COURTHOUSE IN SNOW HILL, GO NORTHEAST ALONG BUSINESS
 DH7883'U.S. 113 FOR 0.15 MI (0.24 KM) TO STATE HIGHWAY 365. TURN RIGHT AND GO
 DH7883'SOUTHEAST ALONG STATE HIGHWAY 365 FOR 5.3 MI (8.53 KM) TO PUBLIC
 DH7883'LANDING. THE STATION IN NOS TIDAL BENCH MARK DISK CRIMPED TO A
 DH7883'STAINLESS STEEL ROD DRIVEN 32 FT (9.8 M) AND ENCASED IN A 5-INCH (13
 DH7883'CM) PVC PIPE AND CONCRETE KICKBLOCK.  IT IS 0.2 MI (0.32 KM) NORTHWEST
 DH7883'OF BAYSIDE ROAD, 171.5 FT (52.3 M) NORTHWEST OF POWER POLE 118, 154.7
 DH7883'FT (47.2 M) SOUTHEAST OF POWER POLE 117, 104.0 FT (31.7 M) NORTHEAST
 DH7883'OF THE NORTH CORNER OF A 2 STORY FRAME DWELLING (HAMAKERS RESIDENCE),
 DH7883'AND 34.5 FT (10.5 M) NORTHEAST OF THE CENTER LINE OF THE HIGHWAY AN
 DH7883'ABOUT 0.5 FT (0.2 M) BELOW THE LEVEL OF THE GROUND. NOTE= VM NUMBER
 DH7883'3037
 DH7883
 DH7883                          STATION RECOVERY (2013)
 DH7883
 DH7883'RECOVERY NOTE BY WATERSHED SCIENCES 2013 (EG)
 DH7883'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2405 ***********************************************************************
 DR2405  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2405  DESIGNATION -  857 0691 C
 DR2405  PID         -  DR2405
 DR2405  STATE/COUNTY-  MD/WORCESTER
 DR2405  COUNTRY     -  US
 DR2405  USGS QUAD   -  TINGLES ISLAND (2016)
 DR2405
 DR2405                         *CURRENT SURVEY CONTROL
 DR2405  ______________________________________________________________________
 DR2405* NAD 83(2011) POSITION- 38 08 20.23101(N) 075 10 53.58901(W)   ADJUSTED
 DR2405* NAD 83(2011) ELLIP HT-   -35.966 (meters)        (06/05/19)   ADJUSTED
 DR2405* NAD 83(2011) EPOCH   -  2010.00
 DR2405* NAVD 88 ORTHO HEIGHT -     0.37  (meters)        1.2   (feet) GPS OBS
 DR2405  ______________________________________________________________________
 DR2405  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2405  GEOID HEIGHT    -        -36.284 (meters)                     GEOID12B
 DR2405  GEOID HEIGHT    -        -36.289 (meters)                     GEOID18
 DR2405  NAD 83(2011) X  -  1,284,639.610 (meters)                     COMP
 DR2405  NAD 83(2011) Y  - -4,855,834.806 (meters)                     COMP
 DR2405  NAD 83(2011) Z  -  3,917,564.101 (meters)                     COMP
 DR2405  LAPLACE CORR    -          0.61  (seconds)                    DEFLEC18
 DR2405
 DR2405  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2405  Standards:
 DR2405         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2405            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2405  -------------------------------------------------------------------
 DR2405  NETWORK    0.92   0.74           0.45   0.23   0.38      0.01449251
 DR2405  -------------------------------------------------------------------
 DR2405  Click here for local accuracies and other accuracy information.
 DR2405
 DR2405.The horizontal coordinates were established by GPS observations
 DR2405.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2405
 DR2405.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2405.been affixed to the stable North American tectonic plate. See 
 DR2405.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2405
 DR2405.The horizontal coordinates are valid at the epoch date displayed above
 DR2405.which is a decimal equivalence of Year/Month/Day.
 DR2405
 DR2405.The orthometric height was determined by GPS observations and a
 DR2405.high-resolution geoid model using precise GPS observation and
 DR2405.processing techniques.
 DR2405
 DR2405.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2405.GEOID18 height accuracy estimate available here.
 DR2405
 DR2405.Click photographs - Photos may exist for this station.
 DR2405
 DR2405.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2405
 DR2405.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2405
 DR2405.The ellipsoidal height was determined by GPS observations
 DR2405.and is referenced to NAD 83.
 DR2405
 DR2405. The following values were computed from the NAD 83(2011) position.
 DR2405
 DR2405;                    North         East     Units Scale Factor Converg.
 DR2405;SPC MD       -    54,014.042   559,411.425   MT  1.00003192   +1 08 28.8
 DR2405;SPC MD       -   177,211.07  1,835,335.65   sFT  1.00003192   +1 08 28.8
 DR2405;UTM  18      - 4,221,247.900   484,090.292   MT  0.99960312   -0 06 43.6
 DR2405
 DR2405!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2405!SPC MD       -   1.00000564  x   1.00003192  =   1.00003756
 DR2405!UTM  18      -   1.00000564  x   0.99960312  =   0.99960876
 DR2405
 DR2405_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8409021247(NAD 83)
 DR2405
 DR2405                          SUPERSEDED SURVEY CONTROL
 DR2405
 DR2405.No superseded survey control is available for this station.
 DR2405
 DR2405_MARKER: F = FLANGE-ENCASED ROD
 DR2405_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DR2405_STAMPING: 0691 C 2012
 DR2405_MARK LOGO: NPS
 DR2405_PROJECTION: RECESSED 8 CENTIMETERS
 DR2405_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2405_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2405+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 DR2405_ROD/PIPE-DEPTH: 15.8 meters
 DR2405_SLEEVE-DEPTH  : 0.9 meters
 DR2405
 DR2405  HISTORY     - Date     Condition        Report By
 DR2405  HISTORY     - 20120101 MONUMENTED       NPS
 DR2405  HISTORY     - 20150316 GOOD             NPS
 DR2405
 DR2405                          STATION DESCRIPTION
 DR2405
 DR2405'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DR2405'THE STATION IS LOCATED ABOUT 11.8 MI (19.0 KM) EAST-SOUTHEAST OF SNOW
 DR2405'HILL, 9.7 MI (15.7 KM) SOUTHEAST OF NEWARK AND 9.3 MI (15.0 KM) EAST
 DR2405'OF BOXIRON.
 DR2405'
 DR2405'THE STATION IS LOCATED AT KM 21.8 IN THE OSV ZONE (PINE TREE).  FROM
 DR2405'BAYBERRY DRIVE.  CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL
 DR2405'DRIVE REQUIRED).  DRIVE SOUTH ON THE BEACH 5.8 KM (3.6 MI).  TURN
 DR2405'RIGHT ONTO BUNTINGS/PINE TREE ROAD AND CONTINUE FOR 0.5 KM (0.3 MI).
 DR2405'THE STATION IS 12.8 M (42.0 FT) SOUTH OF THE CENTER OF THE ROAD AND
 DR2405'1.1 M (3.6 FT) NORTH-NORTHEAST OF AN ORANGE CARSONITE WITNESS POST.
 DR2405'VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND NATIONAL
 DR2405'SEASHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7941 ***********************************************************************
 DH7941  TIDAL BM    -  This is a Tidal Bench Mark.
 DH7941  DESIGNATION -  857 1091 B TIDAL
 DH7941  PID         -  DH7941
 DH7941  STATE/COUNTY-  MD/SOMERSET
 DH7941  COUNTRY     -  US
 DH7941  USGS QUAD   -  CRISFIELD (2016)
 DH7941
 DH7941                         *CURRENT SURVEY CONTROL
 DH7941  ______________________________________________________________________
 DH7941* NAD 83(2011) POSITION- 37 58 42.58716(N) 075 51 43.74995(W)   ADJUSTED
 DH7941* NAD 83(2011) ELLIP HT-   -34.853 (meters)        (02/16/16)   ADJUSTED
 DH7941* NAD 83(2011) EPOCH   -  2010.00
 DH7941* NAVD 88 ORTHO HEIGHT -     1.245 (meters)        4.08  (feet) ADJUSTED
 DH7941  ______________________________________________________________________
 DH7941  GEOID HEIGHT    -        -36.090 (meters)                     GEOID18
 DH7941  NAD 83(2011) X  -  1,229,551.255 (meters)                     COMP
 DH7941  NAD 83(2011) Y  - -4,881,399.453 (meters)                     COMP
 DH7941  NAD 83(2011) Z  -  3,903,541.409 (meters)                     COMP
 DH7941  LAPLACE CORR    -         -1.50  (seconds)                    DEFLEC18
 DH7941  DYNAMIC HEIGHT  -          1.244 (meters)        4.08  (feet) COMP
 DH7941  MODELED GRAVITY -    979,971.2   (mgal)                       NAVD 88
 DH7941
 DH7941  VERT ORDER      -  SECOND    CLASS I
 DH7941
 DH7941  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH7941  Standards:
 DH7941         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH7941            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH7941  -------------------------------------------------------------------
 DH7941  NETWORK    0.49   1.23           0.22   0.18   0.63     -0.04925083
 DH7941  -------------------------------------------------------------------
 DH7941  Click here for local accuracies and other accuracy information.
 DH7941
 DH7941.The horizontal coordinates were established by GPS observations
 DH7941.and adjusted by the ARCHER-SHEE LAND SURVEYING in February 2016.
 DH7941
 DH7941.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH7941.been affixed to the stable North American tectonic plate. See 
 DH7941.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH7941
 DH7941.The horizontal coordinates are valid at the epoch date displayed above
 DH7941.which is a decimal equivalence of Year/Month/Day.
 DH7941
 DH7941.The orthometric height was determined by differential leveling and
 DH7941.adjusted by the NATIONAL GEODETIC SURVEY
 DH7941.in February 2006.
 DH7941
 DH7941.No vertical observational check was made to the station.
 DH7941
 DH7941.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7941.GEOID18 height accuracy estimate available here.
 DH7941
 DH7941.This Tidal Bench Mark is designated as VM 3039
 DH7941.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DH7941
 DH7941.Click photographs - Photos may exist for this station.
 DH7941
 DH7941.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH7941
 DH7941.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH7941
 DH7941.The ellipsoidal height was determined by GPS observations
 DH7941.and is referenced to NAD 83.
 DH7941
 DH7941.The dynamic height is computed by dividing the NAVD 88
 DH7941.geopotential number by the normal gravity value computed on the
 DH7941.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7941.degrees latitude (g = 980.6199 gals.).
 DH7941
 DH7941.The modeled gravity was interpolated from observed gravity values.
 DH7941
 DH7941. The following values were computed from the NAD 83(2011) position.
 DH7941
 DH7941;                    North         East     Units Scale Factor Converg.
 DH7941;SPC MD       -    35,238.120   499,973.654   MT  1.00007147   +0 42 50.9
 DH7941;SPC MD       -   115,610.40  1,640,330.23   sFT  1.00007147   +0 42 50.9
 DH7941;UTM  18      - 4,203,779.733   424,282.493   MT  0.99967061   -0 31 50.0
 DH7941
 DH7941!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH7941!SPC MD       -   1.00000547  x   1.00007147  =   1.00007694
 DH7941!UTM  18      -   1.00000547  x   0.99967061  =   0.99967608
 DH7941
 DH7941:                Primary Azimuth Mark                     Grid Az
 DH7941:SPC MD       -  CRISFIELD                                151 16 49.8
 DH7941:UTM  18      -  CRISFIELD                                152 31 30.7
 DH7941
 DH7941_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2428203779(NAD 83)
 DH7941
 DH7941|---------------------------------------------------------------------|
 DH7941| PID    Reference Object                     Distance      Geod. Az  |
 DH7941|                                                           dddmmss.s |
 DH7941| DH7949 TAWES MUSEUM                        254.046 METERS 09154     |
 DH7941| FW1986 CRISFIELD                           498.146 METERS 1515940.7 |
 DH7941|---------------------------------------------------------------------|
 DH7941
 DH7941                          SUPERSEDED SURVEY CONTROL
 DH7941
 DH7941.No superseded survey control is available for this station.
 DH7941
 DH7941_MARKER: DJ = TIDAL STATION DISK
 DH7941_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DH7941_SP_SET: TRAFFIC ISLAND
 DH7941_STAMPING: 1091 B 1977
 DH7941_MARK LOGO: NOS
 DH7941_MAGNETIC: N = NO MAGNETIC MATERIAL
 DH7941_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH7941_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7941+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2021
 DH7941
 DH7941  HISTORY     - Date     Condition        Report By
 DH7941  HISTORY     - 1997     MONUMENTED       NOS
 DH7941  HISTORY     - 20051009 GOOD             NGS
 DH7941  HISTORY     - 20150514 GOOD             ARCSHE
 DH7941  HISTORY     - 20180626 GOOD             USGS
 DH7941  HISTORY     - 20210925 GOOD             PROFLN
 DH7941
 DH7941                          STATION DESCRIPTION
 DH7941
 DH7941'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DH7941'THE STATION IS LOCATED ABOUT 6.5 MI SW OF MARION, 3.4 MI SW OF
 DH7941'HOPEWELL AND 0.5 MI SW OF CRISFIELD.
 DH7941'THE STATION IS LOCATED IN THE CITY OF CRISFIELD AT THE JUNCTION OF
 DH7941'WEST MAIN AND 10TH STREETS.  0.05 MILE (0.08 KM) EAST OF THE CITY DOCK
 DH7941'SET IN THE EAST END OF THE CONCRETE MEDIUM OF WEST MAIN STREET
 DH7941'DIRECTLY SOUTH AND ACROSS THE WEST BOUND LANE OF MAIN STREET FROM
 DH7941'FORBUSH AND BROTHERS HARDWARE STORE.
 DH7941'48.5 FEET (14.8 M) SOUTH AND ACROSS THE WEST BOUND LANE OF MAIN STREET
 DH7941'FROM POWER POLE 39189. 16.0 FEET (4.9 M) SOUTH OF THE WEST BOUND LANE
 DH7941'OF MAIN STREET.  14.8 FEET (4.5 M) NORTH OF THE EAST BOUND LANE OF
 DH7941'MAIN STREET.  6.1 FEET (1.9 M) WEST OF THE METAL POST OF A REFLECTOR
 DH7941'IN THE CONCRETE MEDIUM ABOUT 1.0 FOOT (0.3 M) ABOVE MAIN STREET.
 DH7941
 DH7941                          STATION RECOVERY (2015)
 DH7941
 DH7941'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 DH7941'RECOVERED IN GOOD CONDITION.
 DH7941
 DH7941                          STATION RECOVERY (2018)
 DH7941
 DH7941'RECOVERY NOTE BY US GEOLOGICAL SURVEY 2018 (AJT)
 DH7941'RECOVERED IN GOOD CONDITION.
 DH7941
 DH7941                          STATION RECOVERY (2021)
 DH7941
 DH7941'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 DH7941'THE STATION IS IN THE NORTHEAST END OF THE CONCRETE MEDIAN OF WEST
 DH7941'MAIN ST, IN FRONT OF - NW OF - A LONG 1-STORY COMMERCIAL BUILDING,
 DH7941'ADDRESS 1001-1003.
 DH7941'
 DH7941'IT IS ABOUT 50 FT (15.2 M) SOUTHWEST OF N 10TH ST, WHICH DOES NOT
 DH7941'QUITE LINE UP WITH S 10TH ST. IT IS 25 FT (7.6 M) SOUTHWEST OF THE
 DH7941'NE-MOST PART OF THE BUILDING EXTENDED AND 13 FT (4.0 M) NORTHWEST AND
 DH7941'SE OF THE EAST- AND WEST-BOUND LANES OF MAIN ST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW0499 ***********************************************************************
 FW0499  TIDAL BM    -  This is a Tidal Bench Mark.
 FW0499  DESIGNATION -  857 1091 TIDAL 10
 FW0499  PID         -  FW0499
 FW0499  STATE/COUNTY-  MD/SOMERSET
 FW0499  COUNTRY     -  US
 FW0499  USGS QUAD   -  CRISFIELD (2016)
 FW0499
 FW0499                         *CURRENT SURVEY CONTROL
 FW0499  ______________________________________________________________________
 FW0499* NAD 83(1986) POSITION- 37 58 42.45   (N) 075 51 48.30   (W)   HD_HELD1
 FW0499* NAVD 88 ORTHO HEIGHT -     0.548 (meters)        1.80  (feet) ADJUSTED
 FW0499  ______________________________________________________________________
 FW0499  GEOID HEIGHT    -        -36.089 (meters)                     GEOID18
 FW0499  DYNAMIC HEIGHT  -          0.548 (meters)        1.80  (feet) COMP
 FW0499  MODELED GRAVITY -    979,971.1   (mgal)                       NAVD 88
 FW0499
 FW0499  VERT ORDER      -  FIRST     CLASS I
 FW0499
 FW0499.The horizontal coordinates were determined by differentially corrected
 FW0499.hand held GPS observations or other comparable positioning techniques
 FW0499.and have an estimated accuracy of +/- 3 meters.
 FW0499
 FW0499.The orthometric height was determined by differential leveling and
 FW0499.adjusted by the NATIONAL GEODETIC SURVEY
 FW0499.in April 1995.
 FW0499
 FW0499.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW0499.GEOID18 height accuracy estimate available here.
 FW0499
 FW0499.This Tidal Bench Mark is designated as VM 3043
 FW0499.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 FW0499
 FW0499.Click photographs - Photos may exist for this station.
 FW0499
 FW0499.The dynamic height is computed by dividing the NAVD 88
 FW0499.geopotential number by the normal gravity value computed on the
 FW0499.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 FW0499.degrees latitude (g = 980.6199 gals.).
 FW0499
 FW0499.The modeled gravity was interpolated from observed gravity values.
 FW0499
 FW0499;                    North         East    Units  Estimated Accuracy
 FW0499;SPC MD       -    35,232.5     499,862.7     MT  (+/- 3 meters HH1 GPS) 
 FW0499
 FW0499_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2417103776(NAD 83)
 FW0499
 FW0499                          SUPERSEDED SURVEY CONTROL
 FW0499
 FW0499  NAVD 88 (06/15/91)    0.603  (m)            1.98   (f) SUPERSEDED  1 1
 FW0499  NGVD 29 (11/26/84)    0.853  (m)            2.80   (f) ADJUSTED    1 1
 FW0499
 FW0499.Superseded values are not recommended for survey control.
 FW0499
 FW0499.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW0499.See file dsdata.pdf to determine how the superseded data were derived.
 FW0499
 FW0499_MARKER: DB = BENCH MARK DISK
 FW0499_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 FW0499_SP_SET: BLOCK
 FW0499_STAMPING: NO 10 1942
 FW0499_MARK LOGO: CGS
 FW0499_MAGNETIC: N = NO MAGNETIC MATERIAL
 FW0499_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 FW0499_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 FW0499+SATELLITE: SATELLITE OBSERVATIONS - September 27, 2021
 FW0499
 FW0499  HISTORY     - Date     Condition        Report By
 FW0499  HISTORY     - 1942     MONUMENTED       CGS
 FW0499  HISTORY     - 1963     GOOD             CGS
 FW0499  HISTORY     - 19901026 GOOD             NGS
 FW0499  HISTORY     - 20020820 GOOD             USPSQD
 FW0499  HISTORY     - 20041024 GOOD             GEOCAC
 FW0499  HISTORY     - 20051026 GOOD             NGS
 FW0499  HISTORY     - 20180626 GOOD             USGS
 FW0499  HISTORY     - 20210927 GOOD             PROFLN
 FW0499
 FW0499                          STATION DESCRIPTION
 FW0499
 FW0499'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 FW0499'AT CRISFIELD.
 FW0499'AT CRISFIELD, AT THE WEST END OF BROAD STREET, 183 FEET NORTH OF
 FW0499'CENTER LINE OF MARYLAND BOULEVARD, AT THE NORTHEAST CORNER OF A
 FW0499'LARGE CONCRETE BLOCK BUILDING, SET IN TOP OF A 2-FOOT BY 2-FOOT
 FW0499'CONCRETE BLOCK, 29 FEET SOUTH OF CENTER LINE OF THE STREET, 49
 FW0499'FEET SOUTH AND ACROSS STREET FROM TELEPHONE POLE 12, ABOUT LEVEL
 FW0499'WITH THE STREET, AND SET IN THE TOP OF A CONCRETE BLOCK PROJECTING
 FW0499'1 INCH.
 FW0499
 FW0499                          STATION RECOVERY (1990)
 FW0499
 FW0499'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 FW0499'IN CRISFIELD, AT THE INTERSECTION OF BROAD AND ELEVENTH STREETS, IN
 FW0499'THE CENTER OF THE NORTHWEST SIDE OF A CONCRETE BLOCK, 40.0 M
 FW0499'(131.2 FT) SOUTHWEST OF THE CENTER OF ELEVENTH STREET, 8.0 M
 FW0499'(26.2 FT) SOUTHEAST OF AND LEVEL WITH THE CENTER OF BROAD STREET, 7.6
 FW0499'M (24.9 FT) NORTHEAST OF UTILITY POLE NUMBER 39150 79114, 0.4 M
 FW0499'(1.3 FT) NORTHWEST OF THE NORTH CORNER OF A BUILDING, AND FLUSH WITH
 FW0499'THE GROUND SURFACE.
 FW0499
 FW0499                          STATION RECOVERY (2002)
 FW0499
 FW0499'RECOVERY NOTE BY US POWER SQUADRON 2002 (MEC)
 FW0499'RECOVERED IN GOOD CONDITION AS DESCRIBED.
 FW0499
 FW0499                          STATION RECOVERY (2004)
 FW0499
 FW0499'RECOVERY NOTE BY GEOCACHING 2004 (DPH)
 FW0499'RECOVERED IN GOOD CONDITION.
 FW0499
 FW0499                          STATION RECOVERY (2005)
 FW0499
 FW0499'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 FW0499'THE STATION IS LOCATED ABOUT 6.6 MI (10.62 KM) SOUTHWEST OF MARION,
 FW0499'3.4 MI (5.47 KM) SOUTHWEST OF HOPEWELL AND 0.6 MI (0.97 KM) SOUTHWEST
 FW0499'OF CRISFIELD AND NEAR WEST END OF BROAD STREET.
 FW0499'TO REACH THE STATION FROM THE CITY FIRE STATION LOCATED AT THE
 FW0499'JUNCTION OF MAIN AND 8TH STREETS, GO WEST ALONG MAIN STREET FOR 0.35
 FW0499'MI (0.56 KM) TO THE JUNCTION TO THE JUNCTION OF 10TH STREET ON RIGHT,
 FW0499'TURN RIGHT AND GO NORTH ALONG 10TH STREET FOR 0.05 MI (0.08 KM) TO THE
 FW0499'INTERSECTION OF BROAD STREET, TURN LEFT AND GO WEST ALONG BROAD STREET
 FW0499'FOR 0.05 MI (0.08 KM) TO ITS END AND A WHITE CONCRETE BLOCK BUILDING
 FW0499'AND MARK AT BUILDING, SET IN TOP OF A CONCRETE SLAB WITH AN METAL PIPE
 FW0499'ENBEDED IN IT AT THE NORTHEAST CORNER OF BLOCK BUILDING.
 FW0499'24.7 FT (7.5 M) SOUTH OF THE CENTERLINE OF BROAD STREET, 145.0 FT
 FW0499'(44.2 M) WEST OF THE CENTERLINE OF 10TH STREET, 6.0 FT (1.8 M) WEST OF
 FW0499'CENTRLINE OF CENTERLINE OF AN ALLEY WAY, 1.5 FT (0.5 M) NORTH OF THE
 FW0499'NORTHEAST CORNER OF THE CONCRETE BLOCK BUILDING, 24.7 FT (7.5 M)
 FW0499'EAST-SOUTHEAST OF POWER POLE NUMBER 3915079114 WITH A STREET LIGHT AND
 FW0499'GUY WIRE, AND 0.8 FT (0.2 M) EAST OF A NGS FIBERGLASS WITNESS POST.
 FW0499
 FW0499                          STATION RECOVERY (2018)
 FW0499
 FW0499'RECOVERY NOTE BY US GEOLOGICAL SURVEY 2018 (AJT)
 FW0499'MARK FOUND AS NOTED, HOWEVER IT WAS SURVEYED TO DH7941 AND WAS FOUND
 FW0499'AT A DIFFERENT ELEVATION AS NOTED ON THE DATA SHEET.
 FW0499
 FW0499                          STATION RECOVERY (2021)
 FW0499
 FW0499'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 FW0499'RECOVERED AS DESCRIBED WITH DBC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2663 ***********************************************************************
 HU2663  DESIGNATION -  857 1227 TIDAL 4 RESET
 HU2663  PID         -  HU2663
 HU2663  STATE/COUNTY-  MD/WORCESTER
 HU2663  COUNTRY     -  US
 HU2663  USGS QUAD   -  POCOMOKE CITY (2016)
 HU2663
 HU2663                         *CURRENT SURVEY CONTROL
 HU2663  ______________________________________________________________________
 HU2663* NAD 83(1986) POSITION- 38 04 35.5    (N) 075 34 14.0    (W)   HD_HELD2
 HU2663* NAVD 88 ORTHO HEIGHT -     3.41  (meters)       11.2   (feet) RESET
 HU2663  ______________________________________________________________________
 HU2663  GEOID HEIGHT    -        -36.269 (meters)                     GEOID18
 HU2663  VERT ORDER      -  THIRD
 HU2663
 HU2663.The horizontal coordinates were established by autonomous hand held GPS
 HU2663.observations and have an estimated accuracy of +/- 10 meters.
 HU2663
 HU2663.The orthometric height was computed from unverified reset data.
 HU2663
 HU2663.No vertical observational check was made to the station.
 HU2663
 HU2663.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2663.GEOID18 height accuracy estimate available here.
 HU2663
 HU2663.Click photographs - Photos may exist for this station.
 HU2663
 HU2663;                    North         East    Units  Estimated Accuracy
 HU2663;SPC MD       -    46,479.      525,422.      MT  (+/- 10 meters HH2 GPS)
 HU2663
 HU2663_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4995814459(NAD 83)
 HU2663
 HU2663                          SUPERSEDED SURVEY CONTROL
 HU2663
 HU2663  NGVD 29 (11/18/05)    3.66   (m)           12.0    (f) RESET       3  
 HU2663
 HU2663.Superseded values are not recommended for survey control.
 HU2663
 HU2663.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2663.See file dsdata.pdf to determine how the superseded data were derived.
 HU2663
 HU2663_MARKER: DV = VERTICAL CONTROL DISK
 HU2663_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU2663_SP_SET: BRIDGE ABUTMENT
 HU2663_STAMPING: NO 4 RESET 1986
 HU2663_MARK LOGO: NGS
 HU2663_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2663_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2663+SATELLITE: SATELLITE OBSERVATIONS - July 19, 2011
 HU2663
 HU2663  HISTORY     - Date     Condition        Report By
 HU2663  HISTORY     - 1986     MONUMENTED       NGS
 HU2663  HISTORY     - 20110719 GOOD             GEOCAC
 HU2663
 HU2663                          STATION DESCRIPTION
 HU2663
 HU2663'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 HU2663'IN POCOMOKE CITY.
 HU2663'FROM THE POST OFFICE IN POCOMOKE CITY, GO NORTHWEST FOR 0.3 KM
 HU2663'(0.20 MI) ON STATE HIGHWAY 675 (MARKET ST) TO THE SOUTHEAST END OF THE
 HU2663'OLD POCOMOKE RIVER BRIDGE AND THE MARK ON THE RIGHT, 0.7 M (2.3 FT)
 HU2663'EAST- SOUTHEAST FROM THE EAST PILLAR OF THE BRIDGE, 4.9 M (16.1 FT)
 HU2663'NORTHEAST FROM THE CENTERLINE OF THE BRIDGE, 13.0 M (42.7 FT)
 HU2663'WEST-NORTHWEST FROM A TRAFFIC SIGNAL POLE, AND 9.3 M (30.5 FT)
 HU2663'NORTH-NORTHEAST FROM A BRIDGE GATE GEARBOX.
 HU2663'THE MARK IS 1.0 M ABOVE HIGHWAY.
 HU2663
 HU2663                          STATION RECOVERY (2011)
 HU2663
 HU2663'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 HU2663'RECOVERED IN GOOD CONDITION.
 HU2663'
 HU2663'STATION IS SET INTO THE BASE OF A ROUND ORNAMENTAL PEDESTAL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8202 ***********************************************************************
 DH8202  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8202  TIDAL BM    -  This is a Tidal Bench Mark.
 DH8202  DESIGNATION -  857 1421 A TIDAL
 DH8202  PID         -  DH8202
 DH8202  STATE/COUNTY-  MD/DORCHESTER
 DH8202  COUNTRY     -  US
 DH8202  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 DH8202
 DH8202                         *CURRENT SURVEY CONTROL
 DH8202  ______________________________________________________________________
 DH8202* NAD 83(2011) POSITION- 38 13 16.99165(N) 076 02 17.19329(W)   ADJUSTED
 DH8202* NAD 83(2011) ELLIP HT-   -34.796 (meters)        (06/27/12)   ADJUSTED
 DH8202* NAD 83(2011) EPOCH   -  2010.00
 DH8202* NAVD 88 ORTHO HEIGHT -     0.80  (meters)        2.6   (feet) GPS OBS
 DH8202  ______________________________________________________________________
 DH8202  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8202  GEOID HEIGHT    -        -35.570 (meters)                     GEOID03
 DH8202  GEOID HEIGHT    -        -35.594 (meters)                     GEOID18
 DH8202  NAD 83(2011) X  -  1,210,540.882 (meters)                     COMP
 DH8202  NAD 83(2011) Y  - -4,869,008.503 (meters)                     COMP
 DH8202  NAD 83(2011) Z  -  3,924,757.419 (meters)                     COMP
 DH8202  LAPLACE CORR    -         -1.77  (seconds)                    DEFLEC18
 DH8202
 DH8202  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8202  Standards:
 DH8202         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8202            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8202  -------------------------------------------------------------------
 DH8202  NETWORK    1.15   2.76           0.51   0.42   1.41     -0.13814286
 DH8202  -------------------------------------------------------------------
 DH8202  Click here for local accuracies and other accuracy information.
 DH8202
 DH8202.The horizontal coordinates were established by GPS observations
 DH8202.and adjusted by the National Geodetic Survey in June 2012.
 DH8202
 DH8202.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8202.been affixed to the stable North American tectonic plate. See 
 DH8202.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8202
 DH8202.The horizontal coordinates are valid at the epoch date displayed above
 DH8202.which is a decimal equivalence of Year/Month/Day.
 DH8202
 DH8202.The orthometric height was determined by GPS observations and a
 DH8202.high-resolution geoid model using precise GPS observation and
 DH8202.processing techniques.
 DH8202
 DH8202.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8202.GEOID18 height accuracy estimate available here.
 DH8202
 DH8202.This Tidal Bench Mark is designated as VM 17800
 DH8202.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DH8202
 DH8202.Click photographs - Photos may exist for this station.
 DH8202
 DH8202.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8202
 DH8202.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8202
 DH8202.The ellipsoidal height was determined by GPS observations
 DH8202.and is referenced to NAD 83.
 DH8202
 DH8202. The following values were computed from the NAD 83(2011) position.
 DH8202
 DH8202;                    North         East     Units Scale Factor Converg.
 DH8202;SPC MD       -    62,020.354   484,230.288   MT  1.00001461   +0 36 13.4
 DH8202;SPC MD       -   203,478.44  1,588,678.87   sFT  1.00001461   +0 36 13.4
 DH8202;UTM  18      - 4,230,888.135   409,130.285   MT  0.99970169   -0 38 32.4
 DH8202
 DH8202!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8202!SPC MD       -   1.00000546  x   1.00001461  =   1.00002007
 DH8202!UTM  18      -   1.00000546  x   0.99970169  =   0.99970715
 DH8202
 DH8202_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0913030888(NAD 83)
 DH8202
 DH8202                          SUPERSEDED SURVEY CONTROL
 DH8202
 DH8202  NAD 83(2007)-  38 13 16.99177(N)    076 02 17.19408(W) AD(2002.00) B
 DH8202  ELLIP H (02/12/09)  -34.779  (m)                       GP(2002.00) 5 1
 DH8202  NAD 83(1991)-  38 13 16.99180(N)    076 02 17.19362(W) AD(       ) B
 DH8202  ELLIP H (02/28/06)  -34.772  (m)                       GP(       ) 5 1
 DH8202
 DH8202.Superseded values are not recommended for survey control.
 DH8202
 DH8202.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8202.See file dsdata.pdf to determine how the superseded data were derived.
 DH8202
 DH8202_MARKER: DJ = TIDAL STATION DISK
 DH8202_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DH8202_SP_SET: STAGING PAD
 DH8202_STAMPING: 1421 A 2005
 DH8202_MARK LOGO: NOS
 DH8202_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH8202_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8202+SATELLITE: SATELLITE OBSERVATIONS - April 03, 2014
 DH8202
 DH8202  HISTORY     - Date     Condition        Report By
 DH8202  HISTORY     - 20050920 MONUMENTED       NOS
 DH8202  HISTORY     - 20140403 GOOD             ARCSHE
 DH8202
 DH8202                          STATION DESCRIPTION
 DH8202
 DH8202'DESCRIBED BY NATIONAL OCEAN SERVICE 2005 (GS)
 DH8202'TO REACH THE MARK FROM THE INTERSECTION OF US-50 AND ROUTE 16 IN
 DH8202'CAMBRIDGE, MD,  PROCEED SOUTH ON ROUTE 16 (CAMBRIDGE BELTWAY) FOR 11.7
 DH8202'KM (7.3 MI), TURN LEFT (SOUTH)  ONTO ROUTE 335 FOR 15.6 KM (9.7 MI),
 DH8202'TURN LEFT (EAST) ONTO ROUTE 336, CONTINUE STRAIGHT (OFF  ROUTE 336) ON
 DH8202'PHILLIPS GUNNING CLUB ROAD FOR 1.6 KM (1.0 MI) UNTIL THE ROAD DEAD
 DH8202'ENDS AT  THE KAREN NOONAN CENTER.
 DH8202'
 DH8202'THE PRIMARY BENCH MARK IS A DISK SET FLUSH IN THE TOP OF A CONCRETE
 DH8202'STAGING PAD LOCATED  NNW FROM THE KAREN NOONAN CENTER, 29.20 M (95.8
 DH8202'FT) NNW FROM THE NE CORNER OF THE  KAREN NOONAN CENTER, 26.71 M (87.6
 DH8202'FT) WEST FROM THE NW CORNER OF A WHITE TWO STORY  HOUSE, 0.65 M (2.1
 DH8202'FT) SOUTH FROM THE NW CORNER OF A 11 M (36.1 FT) X 4 M (13.1 FT)
 DH8202'CONCRETE  STAGING PAD, AND 0.16 M (0.5 FT) NE FROM THE SW EDGE OF AN
 DH8202'11 M (36.1 FT) X 4 M (13.1 FT)  CONCRETE STAGING PAD.
 DH8202
 DH8202                          STATION RECOVERY (2014)
 DH8202
 DH8202'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 DH8202'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2267 ***********************************************************************
 HU2267  TIDAL BM    -  This is a Tidal Bench Mark.
 HU2267  DESIGNATION -  857 1477 A TIDAL
 HU2267  PID         -  HU2267
 HU2267  STATE/COUNTY-  MD/WICOMICO
 HU2267  COUNTRY     -  US
 HU2267  USGS QUAD   -  NANTICOKE (2016)
 HU2267
 HU2267                         *CURRENT SURVEY CONTROL
 HU2267  ______________________________________________________________________
 HU2267* NAD 83(1986) POSITION- 38 16 07.     (N) 075 54 44.     (W)   SCALED
 HU2267* NAVD 88 ORTHO HEIGHT -     0.899 (meters)        2.95  (feet) ADJUSTED
 HU2267  ______________________________________________________________________
 HU2267  GEOID HEIGHT    -        -35.706 (meters)                     GEOID18
 HU2267  DYNAMIC HEIGHT  -          0.898 (meters)        2.95  (feet) COMP
 HU2267  MODELED GRAVITY -    979,991.6   (mgal)                       NAVD 88
 HU2267
 HU2267  VERT ORDER      -  SECOND    CLASS I
 HU2267
 HU2267.The horizontal coordinates were scaled from a map and have
 HU2267.an estimated accuracy of +/- 6 seconds.
 HU2267
 HU2267.The orthometric height was determined by differential leveling and
 HU2267.adjusted by the NATIONAL GEODETIC SURVEY
 HU2267.in June 1991.
 HU2267
 HU2267.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2267.GEOID18 height accuracy estimate available here.
 HU2267
 HU2267.This Tidal Bench Mark is designated as VM 3060
 HU2267.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU2267
 HU2267.Click photographs - Photos may exist for this station.
 HU2267
 HU2267.The dynamic height is computed by dividing the NAVD 88
 HU2267.geopotential number by the normal gravity value computed on the
 HU2267.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2267.degrees latitude (g = 980.6199 gals.).
 HU2267
 HU2267.The modeled gravity was interpolated from observed gravity values.
 HU2267
 HU2267;                    North         East    Units  Estimated Accuracy
 HU2267;SPC MD       -    67,390.      495,190.      MT  (+/- 180 meters Scaled)
 HU2267
 HU2267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH202360(NAD 83)
 HU2267
 HU2267                          SUPERSEDED SURVEY CONTROL
 HU2267
 HU2267  NGVD 29 (06/12/91)    1.153  (m)            3.78   (f) ADJUSTED    2 1
 HU2267
 HU2267.Superseded values are not recommended for survey control.
 HU2267
 HU2267.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2267.See file dsdata.pdf to determine how the superseded data were derived.
 HU2267
 HU2267_MARKER: DJ = TIDAL STATION DISK
 HU2267_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HU2267_STAMPING: 1477 A 1981
 HU2267_MARK LOGO: NOS
 HU2267_PROJECTION: RECESSED 10 CENTIMETERS
 HU2267_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2267_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2267_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2267+SATELLITE: SATELLITE OBSERVATIONS - March 01, 1990
 HU2267_ROD/PIPE-DEPTH: 11.3 meters
 HU2267
 HU2267  HISTORY     - Date     Condition        Report By
 HU2267  HISTORY     - 1981     MONUMENTED       NOS
 HU2267  HISTORY     - 19900301 GOOD             NGS
 HU2267  HISTORY     - 20030806 MARK NOT FOUND   NGS
 HU2267  HISTORY     - 20190514 MARK NOT FOUND   PROFLN
 HU2267
 HU2267                          STATION DESCRIPTION
 HU2267
 HU2267'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2267'0.4 KM (0.25 MI) WESTERLY ALONG HARBOR ROAD FROM ITS JUNCTION WITH
 HU2267'STATE HIGHWAY 349 IN NANTICOKE, 68.0 M (223.10 FT) NORTHWEST OF THE
 HU2267'NORTH CORNER OF A HOUSE, 64.0 M (209.97 FT) WEST-NORTHWEST OF BENCH
 HU2267'MARK 857 1477 B TIDAL, 49.7 M (163.06 FT) WEST-NORTHWEST OF THE
 HU2267'NORTHWEST END OF A FENCE, 15.5 M (50.85 FT) SOUTHWEST OF THE CENTER
 HU2267'OF A JETTY, AND 0.2 M (0.66 FT) EAST OF A WITNESS POST.  NOTE--ACCESS
 HU2267'TO THE DISK IS THROUGH A 4-INCH PVC SCREW CAP.
 HU2267
 HU2267                          STATION RECOVERY (2003)
 HU2267
 HU2267'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2003
 HU2267'THE AREA IN WHICH MARK WAS LOCATED HAS FILLED IN TO A DEPTH OF ABOUT A
 HU2267'FOOT OF SAND OVER THE LAST FEW YEARS.  IF THE MARK IS STILL THERE, IT
 HU2267'IS BURIED.
 HU2267
 HU2267                          STATION RECOVERY (2019)
 HU2267
 HU2267'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2267'A CASUAL SEARCH IN THE AREA AFTER PULLING THE DISTANCE WEST-NORTHWEST
 HU2267'OF BENCH MARK B AND MEASURING OVER SW FROM THE JETTY DID NOT REVEAL
 HU2267'THE MARK, BUT IF THIS PROCESS WERE REPEATED AS WELL AS LEVELING TO THE
 HU2267'AREA FROM EITHER BENCH MARK B OR BENCH MARK C, THE MARK IF STILL
 HU2267'EXISTING COULD BE FOUND.  THE NEIGHBOR TO THE SOUTH UP ON THE HILL,
 HU2267'MR. GUE, WAS COOPERATIVE AND OFFERED ACCESS TO HIS PROPERTY FOR THE
 HU2267'PURPOSE OF SEARCHING FOR THIS MARK - ONE COULD THEN ESTIMATE THE
 HU2267'HEIGHT OF BENCH MARK B FROM MR. GUES SIDE OF THE FENCE FOR THE PURPOSE
 HU2267'OF ROUGH LEVELING TO BENCH MARK A AND AVOID HAVING TO ACCESS THE
 HU2267'SEAFOOD PLANT PROPERTY.  COORDINATES SCALED IN GOOGLE EARTH FROM THE
 HU2267'TIES FROM BENCH MARK B AND THE JETTY - N 38 16 07.8, W 075 54 43.9.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2268 ***********************************************************************
 HU2268  TIDAL BM    -  This is a Tidal Bench Mark.
 HU2268  DESIGNATION -  857 1477 B TIDAL
 HU2268  PID         -  HU2268
 HU2268  STATE/COUNTY-  MD/WICOMICO
 HU2268  COUNTRY     -  US
 HU2268  USGS QUAD   -  NANTICOKE (2016)
 HU2268
 HU2268                         *CURRENT SURVEY CONTROL
 HU2268  ______________________________________________________________________
 HU2268* NAD 83(1986) POSITION- 38 16 07.01   (N) 075 54 41.35   (W)   HD_HELD1
 HU2268* NAVD 88 ORTHO HEIGHT -     2.719 (meters)        8.92  (feet) ADJUSTED
 HU2268  ______________________________________________________________________
 HU2268  GEOID HEIGHT    -        -35.707 (meters)                     GEOID18
 HU2268  DYNAMIC HEIGHT  -          2.718 (meters)        8.92  (feet) COMP
 HU2268  MODELED GRAVITY -    979,991.6   (mgal)                       NAVD 88
 HU2268
 HU2268  VERT ORDER      -  SECOND    CLASS I
 HU2268
 HU2268.The horizontal coordinates were determined by differentially corrected
 HU2268.hand held GPS observations or other comparable positioning techniques
 HU2268.and have an estimated accuracy of +/- 3 meters.
 HU2268
 HU2268.The orthometric height was determined by differential leveling and
 HU2268.adjusted by the NATIONAL GEODETIC SURVEY
 HU2268.in June 1991.
 HU2268
 HU2268.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2268.GEOID18 height accuracy estimate available here.
 HU2268
 HU2268.This Tidal Bench Mark is designated as VM 3061
 HU2268.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU2268
 HU2268.Click photographs - Photos may exist for this station.
 HU2268
 HU2268.The dynamic height is computed by dividing the NAVD 88
 HU2268.geopotential number by the normal gravity value computed on the
 HU2268.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2268.degrees latitude (g = 980.6199 gals.).
 HU2268
 HU2268.The modeled gravity was interpolated from observed gravity values.
 HU2268
 HU2268;                    North         East    Units  Estimated Accuracy
 HU2268;SPC MD       -    67,386.8     495,255.3     MT  (+/- 3 meters HH1 GPS) 
 HU2268
 HU2268_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2026536011(NAD 83)
 HU2268
 HU2268                          SUPERSEDED SURVEY CONTROL
 HU2268
 HU2268  NGVD 29 (06/12/91)    2.973  (m)            9.75   (f) ADJUSTED    2 1
 HU2268
 HU2268.Superseded values are not recommended for survey control.
 HU2268
 HU2268.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2268.See file dsdata.pdf to determine how the superseded data were derived.
 HU2268
 HU2268_MARKER: DJ = TIDAL STATION DISK
 HU2268_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HU2268_STAMPING: 1477 B 1981
 HU2268_MARK LOGO: NOS
 HU2268_PROJECTION: FLUSH
 HU2268_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2268_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2268_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2268+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2019
 HU2268_ROD/PIPE-DEPTH: 18.3 meters
 HU2268
 HU2268  HISTORY     - Date     Condition        Report By
 HU2268  HISTORY     - 1981     MONUMENTED       NOS
 HU2268  HISTORY     - 19900301 GOOD             NGS
 HU2268  HISTORY     - 20030806 GOOD             NGS
 HU2268  HISTORY     - 20190514 GOOD             PROFLN
 HU2268
 HU2268                          STATION DESCRIPTION
 HU2268
 HU2268'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2268'0.4 KM (0.25 MI) WESTERLY ALONG HARBOR ROAD FROM ITS JUNCTION WITH
 HU2268'STATE HIGHWAY 349 IN NANTICOKE, 39.6 M (129.92 FT) WEST OF THE WEST
 HU2268'EDGE OF A LARGE NITROGEN TANK AT THE SOUTHWEST END OF THE KENNERLY
 HU2268'SEAFOOD COMPANY, 37.9 M (124.34 FT) NORTHWEST OF A FENCE CORNER, 13.9
 HU2268'M (45.60 FT) SOUTHEAST OF THE NORTHWEST END OF A FENCE, 1.4 M (4.59
 HU2268'FT) NORTHEST OF A FENCE, AND 0.3 M (0.98 FT) EAST OF A WITNESS POST.
 HU2268'NOTE--ACCESS TO THE DISK IS THROUGH A 4-INCH PVC SCREW CAP.
 HU2268
 HU2268                          STATION RECOVERY (2003)
 HU2268
 HU2268'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2003 (CSC)
 HU2268'PACKING PLANT IS NOW THE NANTICOKE SEAFOOD PLANT.  PHONE IS
 HU2268'410-873-2811.
 HU2268
 HU2268                          STATION RECOVERY (2019)
 HU2268
 HU2268'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2268'THE MARK IS ON RELATIVELY HIGH GROUND UP BY THE CHAIN LINK FENCE THAT
 HU2268'RUNS ALONG THE SOUTHWEST LINE OF THE PROPERTY, 40 FT (12.2 M)
 HU2268'NORTHWEST OF THE NORTHWEST LINE EXTENDED OF THE BIG BUILDING ADJOINING
 HU2268'BENCH MARK C, 7 FT (2.1 M) EAST OF A FENCE POST WITH WITNESS DECAL ON
 HU2268'IT, 6 FT (1.8 M) NORTH OF ANOTHER FENCE POST WITH WITNESS DECAL,
 HU2268'RECESSED 0.5 FT (15 CM) A 6 FT (1.8 M) HIGH 2X4 IS STUCK IN THE PVC
 HU2268'PIPE ABOVE THE MARK.  THE PVC CAP IS GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2266 ***********************************************************************
 HU2266  TIDAL BM    -  This is a Tidal Bench Mark.
 HU2266  DESIGNATION -  857 1477 C TIDAL
 HU2266  PID         -  HU2266
 HU2266  STATE/COUNTY-  MD/WICOMICO
 HU2266  COUNTRY     -  US
 HU2266  USGS QUAD   -  NANTICOKE (2016)
 HU2266
 HU2266                         *CURRENT SURVEY CONTROL
 HU2266  ______________________________________________________________________
 HU2266* NAD 83(1986) POSITION- 38 16 07.52   (N) 075 54 39.89   (W)   HD_HELD1
 HU2266* NAVD 88 ORTHO HEIGHT -     1.926 (meters)        6.32  (feet) ADJUSTED
 HU2266  ______________________________________________________________________
 HU2266  GEOID HEIGHT    -        -35.707 (meters)                     GEOID18
 HU2266  DYNAMIC HEIGHT  -          1.925 (meters)        6.32  (feet) COMP
 HU2266  MODELED GRAVITY -    979,991.6   (mgal)                       NAVD 88
 HU2266
 HU2266  VERT ORDER      -  SECOND    CLASS I
 HU2266
 HU2266.The horizontal coordinates were determined by differentially corrected
 HU2266.hand held GPS observations or other comparable positioning techniques
 HU2266.and have an estimated accuracy of +/- 3 meters.
 HU2266
 HU2266.The orthometric height was determined by differential leveling and
 HU2266.adjusted by the NATIONAL GEODETIC SURVEY
 HU2266.in June 1991.
 HU2266
 HU2266.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2266.GEOID18 height accuracy estimate available here.
 HU2266
 HU2266.This Tidal Bench Mark is designated as VM 3062
 HU2266.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU2266
 HU2266.Click photographs - Photos may exist for this station.
 HU2266
 HU2266.The dynamic height is computed by dividing the NAVD 88
 HU2266.geopotential number by the normal gravity value computed on the
 HU2266.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2266.degrees latitude (g = 980.6199 gals.).
 HU2266
 HU2266.The modeled gravity was interpolated from observed gravity values.
 HU2266
 HU2266;                    North         East    Units  Estimated Accuracy
 HU2266;SPC MD       -    67,403.0     495,290.6     MT  (+/- 3 meters HH1 GPS) 
 HU2266
 HU2266_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2030136027(NAD 83)
 HU2266
 HU2266                          SUPERSEDED SURVEY CONTROL
 HU2266
 HU2266  NGVD 29 (06/12/91)    2.180  (m)            7.15   (f) ADJUSTED    2 1
 HU2266
 HU2266.Superseded values are not recommended for survey control.
 HU2266
 HU2266.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2266.See file dsdata.pdf to determine how the superseded data were derived.
 HU2266
 HU2266_MARKER: DJ = TIDAL STATION DISK
 HU2266_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HU2266+WITH SETTING: PAVEMENT
 HU2266_SP_SET: FOUNDATION
 HU2266_STAMPING: 1477 C 1981
 HU2266_MARK LOGO: NOS
 HU2266_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2266_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2266+STABILITY: SURFACE MOTION
 HU2266_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2266+SATELLITE: SATELLITE OBSERVATIONS - March 01, 1990
 HU2266
 HU2266  HISTORY     - Date     Condition        Report By
 HU2266  HISTORY     - 1981     MONUMENTED       NOS
 HU2266  HISTORY     - 19900301 GOOD             NGS
 HU2266  HISTORY     - 20030806 MARK NOT FOUND   NGS
 HU2266  HISTORY     - 20190514 GOOD             PROFLN
 HU2266
 HU2266                          STATION DESCRIPTION
 HU2266
 HU2266'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2266'0.4 KM (0.25 MI) WESTERLY ALONG HARBOR ROAD FROM ITS JUNCTION WITH
 HU2266'STATE HIGHWAY 349 IN NANTICOKE, IN THE WEST CORNER OF A 12 BY 12 FOOT
 HU2266'CONCRETE FOUNDATION FOR A LARGE NITROGEN TANK AT THE SOUTHWEST END OF
 HU2266'THE KENNERLY SEAFOOD COMPANY, 14.9 M (48.88 FT) NORTHWEST OF THE
 HU2266'SOUTH CORNER OF THE BUILDING, 7.1 M (23.29 FT) SOUTHEAST OF THE WEST
 HU2266'CORNER OF THE BUILDING, AND FLUSH WITH THE GROUND SURFACE.
 HU2266
 HU2266                          STATION RECOVERY (2003)
 HU2266
 HU2266'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2003 (CSC)
 HU2266'MARK NOT FOUND.
 HU2266
 HU2266                          STATION RECOVERY (2019)
 HU2266
 HU2266'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2266'THE MARK IS IN A CONCRETE PAD AT THE SOUTHWEST-MOST PART OF THE
 HU2266'BUILDINGS AT THE SEAFOOD PROCESSING PLANT.  THE GATE TO ACCESS THE
 HU2266'PROPERTY IS NEAR THE MARK, NW OF THE SOUTHWEST END OF THE HARBOR.  TO
 HU2266'OBTAIN ACCESS THROUGH THE GATE I CALLED THE PERSON SUGGESTED BY A
 HU2266'LOCAL AT THE HARBOR, MR. ERIC WEISNER, 410-422-6141.  NOT SURE HOW
 HU2266'LONG THAT CONTACT WILL BE VALID - THE STATUS OF THE PROPERTY APPEARS
 HU2266'TO BE IN FLUX.  THE TWO TIDAL MARKS RECOVERED THIS DATE WERE THIS ONE
 HU2266'AND B, NOTED SEPARATELY, OUT OF FIVE TOTAL.
 HU2266'
 HU2266'THE MARK IS 3.5 FT (1.1 M) SOUTH-SOUTHEAST OF A BUILDING CORNER AT AN
 HU2266'INSET IN THE BUILDING WHERE THE NITROGEN TANK USED TO SIT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2265 ***********************************************************************
 HU2265  TIDAL BM    -  This is a Tidal Bench Mark.
 HU2265  DESIGNATION -  857 1477 D TIDAL
 HU2265  PID         -  HU2265
 HU2265  STATE/COUNTY-  MD/WICOMICO
 HU2265  COUNTRY     -  US
 HU2265  USGS QUAD   -  NANTICOKE (2016)
 HU2265
 HU2265                         *CURRENT SURVEY CONTROL
 HU2265  ______________________________________________________________________
 HU2265* NAD 83(1986) POSITION- 38 16 06.23   (N) 075 54 38.34   (W)   HD_HELD1
 HU2265* NAVD 88 ORTHO HEIGHT -     1.494 (meters)        4.90  (feet) ADJUSTED
 HU2265  ______________________________________________________________________
 HU2265  GEOID HEIGHT    -        -35.708 (meters)                     GEOID18
 HU2265  DYNAMIC HEIGHT  -          1.493 (meters)        4.90  (feet) COMP
 HU2265  MODELED GRAVITY -    979,991.5   (mgal)                       NAVD 88
 HU2265
 HU2265  VERT ORDER      -  SECOND    CLASS I
 HU2265
 HU2265.The horizontal coordinates were determined by differentially corrected
 HU2265.hand held GPS observations or other comparable positioning techniques
 HU2265.and have an estimated accuracy of +/- 3 meters.
 HU2265
 HU2265.The orthometric height was determined by differential leveling and
 HU2265.adjusted by the NATIONAL GEODETIC SURVEY
 HU2265.in June 1991.
 HU2265
 HU2265.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2265.GEOID18 height accuracy estimate available here.
 HU2265
 HU2265.This Tidal Bench Mark is designated as VM 3063
 HU2265.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU2265
 HU2265.Click photographs - Photos may exist for this station.
 HU2265
 HU2265.The dynamic height is computed by dividing the NAVD 88
 HU2265.geopotential number by the normal gravity value computed on the
 HU2265.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2265.degrees latitude (g = 980.6199 gals.).
 HU2265
 HU2265.The modeled gravity was interpolated from observed gravity values.
 HU2265
 HU2265;                    North         East    Units  Estimated Accuracy
 HU2265;SPC MD       -    67,363.7     495,328.8     MT  (+/- 3 meters HH1 GPS) 
 HU2265
 HU2265_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2033835987(NAD 83)
 HU2265
 HU2265                          SUPERSEDED SURVEY CONTROL
 HU2265
 HU2265  NGVD 29 (06/12/91)    1.748  (m)            5.73   (f) ADJUSTED    2 1
 HU2265
 HU2265.Superseded values are not recommended for survey control.
 HU2265
 HU2265.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2265.See file dsdata.pdf to determine how the superseded data were derived.
 HU2265
 HU2265_MARKER: DJ = TIDAL STATION DISK
 HU2265_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HU2265_STAMPING: 1477 D 1981
 HU2265_MARK LOGO: NOS
 HU2265_PROJECTION: FLUSH
 HU2265_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2265_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2265_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2265+SATELLITE: SATELLITE OBSERVATIONS - March 01, 1990
 HU2265_ROD/PIPE-DEPTH: 14.6 meters
 HU2265
 HU2265  HISTORY     - Date     Condition        Report By
 HU2265  HISTORY     - 1981     MONUMENTED       NOS
 HU2265  HISTORY     - 19900301 GOOD             NGS
 HU2265  HISTORY     - 20030806 MARK NOT FOUND   NGS
 HU2265
 HU2265                          STATION DESCRIPTION
 HU2265
 HU2265'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2265'0.4 KM (0.25 MI) WESTERLY ALONG HARBOR ROAD FROM ITS JUNCTION WITH
 HU2265'STATE HIGHWAY 349 IN NANTICOKE, 34.0 M (111.55 FT) SOUTH OF THE SOUTH
 HU2265'CORNER OF THE MOST SOUTHERLY BUILDING OF THE KENNERLY SEAFOOD COMPANY
 HU2265', 25.8 M (84.65 FT) SOUTHWEST OF THE WEST CORNER OF THE BOAT BASIN
 HU2265'WALL, 5.O M SOUTH OF UTILITY POLE NUMBER 37896 89685 437AE T4, AND
 HU2265'LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DISK IS THROUGH A 4-INCH
 HU2265'PVC SCREW CAP.
 HU2265
 HU2265                          STATION RECOVERY (2003)
 HU2265
 HU2265'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2003 (NGS)
 HU2265'PACKING PLANT MANAGER STATES THAT THE AREA WHERE THE MARK WAS LOCATED
 HU2265'HAS BEEN COMPLETELY DUG UP IN ORDER TO REPLACE PIPES AND THAT THE MARK
 HU2265'WAS MOST LIKELY DESTROYED AT THE TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2282 ***********************************************************************
 HU2282  TIDAL BM    -  This is a Tidal Bench Mark.
 HU2282  DESIGNATION -  857 1477 E TIDAL
 HU2282  PID         -  HU2282
 HU2282  STATE/COUNTY-  MD/WICOMICO
 HU2282  COUNTRY     -  US
 HU2282  USGS QUAD   -  NANTICOKE (2016)
 HU2282
 HU2282                         *CURRENT SURVEY CONTROL
 HU2282  ______________________________________________________________________
 HU2282* NAD 83(1986) POSITION- 38 16 08.     (N) 075 54 40.     (W)   SCALED
 HU2282* NAVD 88 ORTHO HEIGHT -     2.164 (meters)        7.10  (feet) ADJUSTED
 HU2282  ______________________________________________________________________
 HU2282  GEOID HEIGHT    -        -35.707 (meters)                     GEOID18
 HU2282  DYNAMIC HEIGHT  -          2.163 (meters)        7.10  (feet) COMP
 HU2282  MODELED GRAVITY -    979,991.6   (mgal)                       NAVD 88
 HU2282
 HU2282  VERT ORDER      -  SECOND    CLASS I
 HU2282
 HU2282.The horizontal coordinates were scaled from a map and have
 HU2282.an estimated accuracy of +/- 6 seconds.
 HU2282
 HU2282.The orthometric height was determined by differential leveling and
 HU2282.adjusted by the NATIONAL GEODETIC SURVEY
 HU2282.in June 1991.
 HU2282
 HU2282.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2282.GEOID18 height accuracy estimate available here.
 HU2282
 HU2282.This Tidal Bench Mark is designated as VM 3064
 HU2282.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU2282
 HU2282.Click photographs - Photos may exist for this station.
 HU2282
 HU2282.The dynamic height is computed by dividing the NAVD 88
 HU2282.geopotential number by the normal gravity value computed on the
 HU2282.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2282.degrees latitude (g = 980.6199 gals.).
 HU2282
 HU2282.The modeled gravity was interpolated from observed gravity values.
 HU2282
 HU2282;                    North         East    Units  Estimated Accuracy
 HU2282;SPC MD       -    67,420.      495,290.      MT  (+/- 180 meters Scaled)
 HU2282
 HU2282_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH202360(NAD 83)
 HU2282
 HU2282                          SUPERSEDED SURVEY CONTROL
 HU2282
 HU2282  NGVD 29 (06/12/91)    2.418  (m)            7.93   (f) ADJUSTED    2 1
 HU2282
 HU2282.Superseded values are not recommended for survey control.
 HU2282
 HU2282.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2282.See file dsdata.pdf to determine how the superseded data were derived.
 HU2282
 HU2282_MARKER: DJ = TIDAL STATION DISK
 HU2282_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU2282_SP_SET: WALKWAY
 HU2282_STAMPING: 1477 E 1981
 HU2282_MARK LOGO: NOS
 HU2282_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2282_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2282+SATELLITE: SATELLITE OBSERVATIONS - August 06, 2003
 HU2282
 HU2282  HISTORY     - Date     Condition        Report By
 HU2282  HISTORY     - 1981     MONUMENTED       NOS
 HU2282  HISTORY     - 19900301 GOOD             NGS
 HU2282  HISTORY     - 20030806 GOOD             NGS
 HU2282  HISTORY     - 20190514 MARK NOT FOUND   PROFLN
 HU2282
 HU2282                          STATION DESCRIPTION
 HU2282
 HU2282'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2282'0.4 KM (0.25 MI) WESTERLY ALONG HARBOR ROAD FROM ITS JUNCTION WITH
 HU2282'STATE HIGHWAY 349 IN NANTICOKE, IN A CONCRETE WALKWAY, 60.1 M (197.18
 HU2282'FT) WEST-SOUTHWEST OF THE SOUTH CORNER OF THE KENNERLY SEAFOOD
 HU2282'COMPANY OFFICE, 20.8 M (68.24 FT) SOUTHWEST OF THE EAST CORNER OF THE
 HU2282'MOST SOUTHWESTERLY OF TWO LONG BUILDINGS, 13.1 M (42.98 FT) NORTHWEST
 HU2282'OF THE NORTH CORNER OF THE MOST SOUTHERLY OF THE BUILDINGS, 2.3 M
 HU2282'(7.55 FT) SOUTHEAST OF THE SOUTHEAST FACE OF THE SOUTH BUILDING, AND
 HU2282'0.2 M (0.66 FT) ABOVE THE GROUND SURFACE.  NOTE--THE DISK HAS BEEN
 HU2282'SCRAPED AND THE 47 OF 1447 AND THE BOTTOM OF THE E IS MISSING, AND THE
 HU2282'STAMPING NOW LOOKS LIKE 14 F 1981.
 HU2282
 HU2282                          STATION RECOVERY (2003)
 HU2282
 HU2282'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2003 (CSC)
 HU2282'MARK IS SOLIDLY IN PLACE, BUT IS SO WORN FROM THE PASSAGE OF PACKING
 HU2282'PLANT EQUIPMENT OVER IT THAT THE STAMPING CAN NO LONGER BE READ.
 HU2282'
 HU2282'PLANT IS NOW THE NANTICOKE SEAFOOD PLANT, PHONE 410-873-2811.
 HU2282
 HU2282                          STATION RECOVERY (2019)
 HU2282
 HU2282'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2282'SEARCHED FOR AND NOT FOUND.  COULD NOT FIND THE RIGHT SPOT ON THE
 HU2282'GROUNDS NOW WITH THE BUILDINGS VACANT AND VARIOUS CONSTRUCTION
 HU2282'MATERIALS STREWN AROUND COVERING WALKWAYS.  COULD NOT TELL WHICH PARTS
 HU2282'OF WHICH BUILDINGS WERE BEING REFERRED TO EXCEPT THE OFFICE BUILDING -
 HU2282'THE SOUTH CORNER OF THAT BUILDING APPEARED READILY IDENTIFIABLE BUT
 HU2282'THE DISTANCE WEST-SOUTHWEST OF IT TO THE MARK WAS BLOCKED BY BUILDINGS
 HU2282'NOW.  EVIDENTLY CHANGES HAVE TAKEN PLACE SINCE THE 2003 RECOVERY.  TO
 HU2282'OBTAIN ACCESS THROUGH THE GATE I CALLED THE PERSON SUGGESTED BY A
 HU2282'LOCAL AT THE HARBOR, MR ERIC WEISNER, 410-422-6141.  NOT SURE HOW LONG
 HU2282'THAT CONTACT WILL BE VALID - THE STATUS OF THE PROPERTY APPEARS TO BE
 HU2282'IN FLUX.  THE TWO TIDAL MARKS RECOVERED THIS DATE OUT OF FIVE TOTAL
 HU2282'WERE B AND C, NOTED SEPARATELY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2193 ***********************************************************************
 HU2193  TIDAL BM    -  This is a Tidal Bench Mark.
 HU2193  DESIGNATION -  857 1485 A TIDAL
 HU2193  PID         -  HU2193
 HU2193  STATE/COUNTY-  MD/WICOMICO
 HU2193  COUNTRY     -  US
 HU2193  USGS QUAD   -  WETIPQUIN (2016)
 HU2193
 HU2193                         *CURRENT SURVEY CONTROL
 HU2193  ______________________________________________________________________
 HU2193* NAD 83(1986) POSITION- 38 16 09.17   (N) 075 47 20.36   (W)   HD_HELD1
 HU2193* NAVD 88 ORTHO HEIGHT -     0.651 (meters)        2.14  (feet) ADJUSTED
 HU2193  ______________________________________________________________________
 HU2193  GEOID HEIGHT    -        -35.841 (meters)                     GEOID18
 HU2193  DYNAMIC HEIGHT  -          0.650 (meters)        2.13  (feet) COMP
 HU2193  MODELED GRAVITY -    979,992.1   (mgal)                       NAVD 88
 HU2193
 HU2193  VERT ORDER      -  SECOND    CLASS I
 HU2193
 HU2193.The horizontal coordinates were determined by differentially corrected
 HU2193.hand held GPS observations or other comparable positioning techniques
 HU2193.and have an estimated accuracy of +/- 3 meters.
 HU2193
 HU2193.The orthometric height was determined by differential leveling and
 HU2193.adjusted by the NATIONAL GEODETIC SURVEY
 HU2193.in June 1991.
 HU2193
 HU2193.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2193.GEOID18 height accuracy estimate available here.
 HU2193
 HU2193.This Tidal Bench Mark is designated as VM 15529
 HU2193.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU2193
 HU2193.Click photographs - Photos may exist for this station.
 HU2193
 HU2193.The dynamic height is computed by dividing the NAVD 88
 HU2193.geopotential number by the normal gravity value computed on the
 HU2193.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2193.degrees latitude (g = 980.6199 gals.).
 HU2193
 HU2193.The modeled gravity was interpolated from observed gravity values.
 HU2193
 HU2193;                    North         East    Units  Estimated Accuracy
 HU2193;SPC MD       -    67,588.4     505,973.5     MT  (+/- 3 meters HH1 GPS) 
 HU2193
 HU2193_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3098235979(NAD 83)
 HU2193
 HU2193                          SUPERSEDED SURVEY CONTROL
 HU2193
 HU2193  NGVD 29 (06/12/91)    0.904  (m)            2.97   (f) ADJUSTED    2 1
 HU2193
 HU2193.Superseded values are not recommended for survey control.
 HU2193
 HU2193.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2193.See file dsdata.pdf to determine how the superseded data were derived.
 HU2193
 HU2193_MARKER: DJ = TIDAL STATION DISK
 HU2193_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HU2193_STAMPING: 1485 A 1989
 HU2193_MARK LOGO: NOS
 HU2193_PROJECTION: FLUSH
 HU2193_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2193_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2193_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2193+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2022
 HU2193_ROD/PIPE-DEPTH: 17.0 meters
 HU2193
 HU2193  HISTORY     - Date     Condition        Report By
 HU2193  HISTORY     - 1989     MONUMENTED       NOS
 HU2193  HISTORY     - 19900308 GOOD             NGS
 HU2193  HISTORY     - 20190425 GOOD             PROFLN
 HU2193  HISTORY     - 20220224 GOOD             NGS
 HU2193
 HU2193                          STATION DESCRIPTION
 HU2193
 HU2193'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2193'IN WHITEHAVEN, AT THE INTERSECTION OF WHITEHAVEN ROAD AND CINDER
 HU2193'LANE, 64.0 M (209.97 FT) SOUTHEAST OF THE CENTER OF THE INTERSECTION
 HU2193'OF THE ROAD AND LANE, 51.0 M (167.32 FT) EAST OF THE CENTER OF THE
 HU2193'LANE, 12.1 M (39.70 FT) NORTH OF THE NORTH CORNER OF A 1.5 BY 2.5
 HU2193'FOOT STEEL STORM DRAIN GRATE, 4.3 M (14.11 FT) NORTHEAST OF AND LEVEL
 HU2193'WITH THE ROAD, AND 1.7 M (5.58 FT) SOUTHWEST OF A WITNESS POST.
 HU2193'NOTE--THE DISK IS ENCASED IN A 4-INCH PIPE THAT IS FLUSH WITH THE
 HU2193'GROUND SURFACE.
 HU2193
 HU2193                          STATION RECOVERY (2019)
 HU2193
 HU2193'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2193'THE MARK IS ON THE EXTENDED NE LINE OF A CREAM COLOR SHED IN THE BACK
 HU2193'YARD OF A THREE-STORY CREAM COLOR HOUSE BY THE FERRY, 214 FT (65.2 M)
 HU2193'SOUTHEAST OF THE SKEW INTERSECTION OF WHITEHAVEN ROAD AND CINDER LANE,
 HU2193'204 FT (62.2 M) SOUTHEAST OF THE SOUTHWEST EDGE OF PAVEMENT OF
 HU2193'WHITEHAVEN ROAD WITH CINDER LANE, 183 FT (55.8 M) SOUTHEAST AND ACROSS
 HU2193'THE ROAD FROM POWER POLE 41374-89695, 165 FT (50.3 M) SOUTHEAST FROM A
 HU2193'SIGN - CHESAPEAKE COUNTRY - ON THE NORTHEAST SIDE OF THE ROAD, 41 FT
 HU2193'(12.5 M) NORTH AND ANGLED ACROSS THE ROAD FROM A STORM DRAIN GRATE, 21
 HU2193'FT (6.4 M) WESTERLY FROM THE NORTHEAST END OF A BLACK CULVERT PIPE AT
 HU2193'RIP RAP, 13 FT (4.0 M) NORTHEAST OF THE ROAD, FLUSH WITH THE GROUND,
 HU2193'0.5 FT (15 CM) LOWER THAN THE ROAD.  THE CONCRETE AROUND THE MARK IS 2
 HU2193'FT (0.6 M) IN DIAMETER.
 HU2193
 HU2193                          STATION RECOVERY (2022)
 HU2193
 HU2193'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (JL)
 HU2193'MARK RECOVERED IN GOOD CONDITION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0560 ***********************************************************************
 HU0560  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0560  DESIGNATION -  857 1485 TIDAL 2
 HU0560  PID         -  HU0560
 HU0560  STATE/COUNTY-  MD/WICOMICO
 HU0560  COUNTRY     -  US
 HU0560  USGS QUAD   -  WETIPQUIN (2016)
 HU0560
 HU0560                         *CURRENT SURVEY CONTROL
 HU0560  ______________________________________________________________________
 HU0560* NAD 83(1986) POSITION- 38 16 06.64   (N) 075 47 17.35   (W)   HD_HELD1
 HU0560* NAVD 88 ORTHO HEIGHT -     0.663 (meters)        2.18  (feet) ADJUSTED
 HU0560  ______________________________________________________________________
 HU0560  GEOID HEIGHT    -        -35.843 (meters)                     GEOID18
 HU0560  DYNAMIC HEIGHT  -          0.662 (meters)        2.17  (feet) COMP
 HU0560  MODELED GRAVITY -    979,992.0   (mgal)                       NAVD 88
 HU0560
 HU0560  VERT ORDER      -  FIRST     CLASS I
 HU0560
 HU0560.The horizontal coordinates were determined by differentially corrected
 HU0560.hand held GPS observations or other comparable positioning techniques
 HU0560.and have an estimated accuracy of +/- 3 meters.
 HU0560
 HU0560.The orthometric height was determined by differential leveling and
 HU0560.adjusted by the NATIONAL GEODETIC SURVEY
 HU0560.in June 1991.
 HU0560
 HU0560.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0560.GEOID18 height accuracy estimate available here.
 HU0560
 HU0560.This Tidal Bench Mark is designated as VM 15526
 HU0560.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0560
 HU0560.Click photographs - Photos may exist for this station.
 HU0560
 HU0560.The dynamic height is computed by dividing the NAVD 88
 HU0560.geopotential number by the normal gravity value computed on the
 HU0560.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0560.degrees latitude (g = 980.6199 gals.).
 HU0560
 HU0560.The modeled gravity was interpolated from observed gravity values.
 HU0560
 HU0560;                    North         East    Units  Estimated Accuracy
 HU0560;SPC MD       -    67,511.4     506,047.7     MT  (+/- 3 meters HH1 GPS) 
 HU0560
 HU0560_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3105435901(NAD 83)
 HU0560
 HU0560                          SUPERSEDED SURVEY CONTROL
 HU0560
 HU0560  NGVD 29 (06/12/91)    0.916  (m)            3.01   (f) ADJUSTED    1 1
 HU0560  NGVD 29 (??/??/87)    0.916  (m)            3.01   (f) SUPERSEDED  1 1
 HU0560
 HU0560.Superseded values are not recommended for survey control.
 HU0560
 HU0560.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0560.See file dsdata.pdf to determine how the superseded data were derived.
 HU0560
 HU0560_MARKER: DB = BENCH MARK DISK
 HU0560_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HU0560+WITH SETTING: PAVEMENT
 HU0560_SP_SET: FOOTING
 HU0560_STAMPING: NO 2 1931
 HU0560_MARK LOGO: CGS
 HU0560_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU0560_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0560+STABILITY: SURFACE MOTION
 HU0560_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0560+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2022
 HU0560
 HU0560  HISTORY     - Date     Condition        Report By
 HU0560  HISTORY     - 1931     MONUMENTED       CGS
 HU0560  HISTORY     - 1963     GOOD             CGS
 HU0560  HISTORY     - 19900308 GOOD             NGS
 HU0560  HISTORY     - 20010226 GOOD             USPSQD
 HU0560  HISTORY     - 20190425 GOOD             PROFLN
 HU0560  HISTORY     - 20220224 GOOD             NGS
 HU0560
 HU0560                          STATION DESCRIPTION
 HU0560
 HU0560'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0560'AT WHITEHAVEN.
 HU0560'AT WHITEHAVEN, 162 FEET EAST OF CENTER LINE OF ROAD LEAD-TO THE
 HU0560'FERRY LANDING, 88 FEET WEST OF WEST BANK OF A SMALL CREEK, 50
 HU0560'FEET EAST OF TIDAL 3 DESCRIBED, 151 FEET SOUTHEAST OF CENTER OF
 HU0560'INTERSECTION OF ROAD TO FERRY AND ROAD LEADING EAST AND WEST ON
 HU0560'NORTH SHORE OF WICOMICO RIVER, AT THE EASTERN MOST ONE OF THREE
 HU0560'6-FOOT CIRCULAR BASES FOR ABANDONED OIL TANKS, AND SET ON TOP OF
 HU0560'THE SOUTHEAST SECTOR OF THE BASE.
 HU0560
 HU0560                          STATION RECOVERY (1990)
 HU0560
 HU0560'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0560'IN WHITEHAVEN, AT THE INTERSECTION OF WHITEHAVEN ROAD AND RIVER
 HU0560'STREET , NEAR THE CENTER OF THE SOUTHERN HALF OF THE CONCRETE FOOTING
 HU0560'OF THE MOST EASTERLY 1 OF 3 FOOTINGS OF A SMALL TANK, 41.5 M (136.15
 HU0560'FT) EAST OF THE CENTER OF THE ROAD, 29.9 M (98.10 FT) EAST OF THE
 HU0560'SOUTHEAST CORNER OF THE FERRY OFFICE BUILDING, 17.4 M (57.09 FT)
 HU0560'SOUTH OF THE EXTENDED CENTER OF THE STREET, AND 0.3 M (0.98 FT) ABOVE
 HU0560'THE GROUND SURFACE.
 HU0560
 HU0560                          STATION RECOVERY (2001)
 HU0560
 HU0560'RECOVERY NOTE BY US POWER SQUADRON 2001 (GVS)
 HU0560'RECOVERED IN GOOD CONDITION.
 HU0560
 HU0560                          STATION RECOVERY (2019)
 HU0560
 HU0560'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU0560'THE MARK IS ON THE EXTENDED CENTERLINE TO THE EAST OF THE FERRY OFFICE
 HU0560'BUILDING, 50 FT (15.2 M) EAST OF THE EAST LINE OF THE HOTEL BACK
 HU0560'PORCH.
 HU0560
 HU0560                          STATION RECOVERY (2022)
 HU0560
 HU0560'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (JL)
 HU0560'MARK RECOVERED AS DESCRIBED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0559 ***********************************************************************
 HU0559  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0559  DESIGNATION -  857 1485 TIDAL 3
 HU0559  PID         -  HU0559
 HU0559  STATE/COUNTY-  MD/WICOMICO
 HU0559  COUNTRY     -  US
 HU0559  USGS QUAD   -  WETIPQUIN (2016)
 HU0559
 HU0559                         *CURRENT SURVEY CONTROL
 HU0559  ______________________________________________________________________
 HU0559* NAD 83(1986) POSITION- 38 16 06.59   (N) 075 47 17.89   (W)   HD_HELD1
 HU0559* NAVD 88 ORTHO HEIGHT -     0.659 (meters)        2.16  (feet) ADJUSTED
 HU0559  ______________________________________________________________________
 HU0559  GEOID HEIGHT    -        -35.843 (meters)                     GEOID18
 HU0559  DYNAMIC HEIGHT  -          0.658 (meters)        2.16  (feet) COMP
 HU0559  MODELED GRAVITY -    979,992.0   (mgal)                       NAVD 88
 HU0559
 HU0559  VERT ORDER      -  FIRST     CLASS I
 HU0559
 HU0559.The horizontal coordinates were determined by differentially corrected
 HU0559.hand held GPS observations or other comparable positioning techniques
 HU0559.and have an estimated accuracy of +/- 3 meters.
 HU0559
 HU0559.The orthometric height was determined by differential leveling and
 HU0559.adjusted by the NATIONAL GEODETIC SURVEY
 HU0559.in June 1991.
 HU0559
 HU0559.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0559.GEOID18 height accuracy estimate available here.
 HU0559
 HU0559.This Tidal Bench Mark is designated as VM 15527
 HU0559.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0559
 HU0559.Click photographs - Photos may exist for this station.
 HU0559
 HU0559.The dynamic height is computed by dividing the NAVD 88
 HU0559.geopotential number by the normal gravity value computed on the
 HU0559.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0559.degrees latitude (g = 980.6199 gals.).
 HU0559
 HU0559.The modeled gravity was interpolated from observed gravity values.
 HU0559
 HU0559;                    North         East    Units  Estimated Accuracy
 HU0559;SPC MD       -    67,509.7     506,034.6     MT  (+/- 3 meters HH1 GPS) 
 HU0559
 HU0559_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3104135899(NAD 83)
 HU0559
 HU0559                          SUPERSEDED SURVEY CONTROL
 HU0559
 HU0559  NGVD 29 (06/12/91)    0.912  (m)            2.99   (f) ADJUSTED    1 1
 HU0559  NGVD 29 (??/??/87)    0.912  (m)            2.99   (f) SUPERSEDED  1 1
 HU0559
 HU0559.Superseded values are not recommended for survey control.
 HU0559
 HU0559.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0559.See file dsdata.pdf to determine how the superseded data were derived.
 HU0559
 HU0559_MARKER: DB = BENCH MARK DISK
 HU0559_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HU0559+WITH SETTING: PAVEMENT
 HU0559_SP_SET: FOOTING
 HU0559_STAMPING: NO 3 1931
 HU0559_MARK LOGO: CGS
 HU0559_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU0559_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0559+STABILITY: SURFACE MOTION
 HU0559_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0559+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2022
 HU0559
 HU0559  HISTORY     - Date     Condition        Report By
 HU0559  HISTORY     - 1931     MONUMENTED       CGS
 HU0559  HISTORY     - 1963     GOOD             CGS
 HU0559  HISTORY     - 19900308 GOOD             NGS
 HU0559  HISTORY     - 20010226 GOOD             USPSQD
 HU0559  HISTORY     - 20190425 GOOD             PROFLN
 HU0559  HISTORY     - 20220224 GOOD             NGS
 HU0559
 HU0559                          STATION DESCRIPTION
 HU0559
 HU0559'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0559'AT WHITEHAVEN.
 HU0559'AT WHITEHAVEN, 112 FEET EAST OF CENTER LINE OF ROAD LEADING TO
 HU0559'FERRY LANDING, 130 FEET WEST OF WEST BANK OF SMALL CREEK, AT THE
 HU0559'WESTERN MOST ONE OF THREE 6-FOOT CIRCULAR BASES FOR ABANDONED
 HU0559'OIL TANKS, SET ON TOP OF THE SOUTHEAST SECTOR OF THE BASE, AND IS
 HU0559'50 FEET WEST OF TIDAL 2 DESCRIBED.
 HU0559
 HU0559                          STATION RECOVERY (1990)
 HU0559
 HU0559'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0559'IN WHITEHAVEN, AT THE INTERSECTION OF WHITEHAVEN ROAD AND RIVER
 HU0559'STREET , NEAR THE CENTER OF THE SOUTHERN HALF OF THE MOST WESTERLY
 HU0559'ONE OF THREE 10-FOOT DIAMETER CONCRETE FOOTINGS OF A SMALL TANK, 28.5
 HU0559'M (93.50 FT) EAST OF THE CENTER OF THE ROAD, 17.3 M (56.76 FT) SOUTH
 HU0559'OF THE EXTENDED CENTER OF THE STREET, 16.9 M (55.45 FT) EAST OF THE
 HU0559'SOUTHEAST CORNER OF THE FERRY OFFICE BUILDING, AND FLUSH WITH THE
 HU0559'GROUND SURFACE.
 HU0559
 HU0559                          STATION RECOVERY (2001)
 HU0559
 HU0559'RECOVERY NOTE BY US POWER SQUADRON 2001 (GVS)
 HU0559'RECOVERED IN GOOD CONDITION.
 HU0559
 HU0559                          STATION RECOVERY (2019)
 HU0559
 HU0559'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU0559'THE MARK IS 5.5 FT (1.7 M) NORTHEAST OF POWER POLE 41408-89664,
 HU0559'POSSIBLY COVERED BY DRIED GRASS THE TIDE BRINGS UP.
 HU0559
 HU0559                          STATION RECOVERY (2022)
 HU0559
 HU0559'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (JL)
 HU0559'MARK RECOVERED AS DESCRIBED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0558 ***********************************************************************
 HU0558  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0558  DESIGNATION -  857 1485 TIDAL 4
 HU0558  PID         -  HU0558
 HU0558  STATE/COUNTY-  MD/WICOMICO
 HU0558  COUNTRY     -  US
 HU0558  USGS QUAD   -  WETIPQUIN (2016)
 HU0558
 HU0558                         *CURRENT SURVEY CONTROL
 HU0558  ______________________________________________________________________
 HU0558* NAD 83(1986) POSITION- 38 16 07.4    (N) 075 47 19.4    (W)   HD_HELD2
 HU0558* NAVD 88 ORTHO HEIGHT -     0.840 (meters)        2.76  (feet) ADJUSTED
 HU0558  ______________________________________________________________________
 HU0558  GEOID HEIGHT    -        -35.842 (meters)                     GEOID18
 HU0558  DYNAMIC HEIGHT  -          0.840 (meters)        2.76  (feet) COMP
 HU0558  MODELED GRAVITY -    979,992.0   (mgal)                       NAVD 88
 HU0558
 HU0558  VERT ORDER      -  FIRST     CLASS I
 HU0558
 HU0558.The horizontal coordinates were established by autonomous hand held GPS
 HU0558.observations and have an estimated accuracy of +/- 10 meters.
 HU0558
 HU0558.The orthometric height was determined by differential leveling and
 HU0558.adjusted by the NATIONAL GEODETIC SURVEY
 HU0558.in June 1991.
 HU0558
 HU0558.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0558.GEOID18 height accuracy estimate available here.
 HU0558
 HU0558.This Tidal Bench Mark is designated as VM 15528
 HU0558.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0558
 HU0558.Click photographs - Photos may exist for this station.
 HU0558
 HU0558.The dynamic height is computed by dividing the NAVD 88
 HU0558.geopotential number by the normal gravity value computed on the
 HU0558.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0558.degrees latitude (g = 980.6199 gals.).
 HU0558
 HU0558.The modeled gravity was interpolated from observed gravity values.
 HU0558
 HU0558;                    North         East    Units  Estimated Accuracy
 HU0558;SPC MD       -    67,534.      505,998.      MT  (+/- 10 meters HH2 GPS)
 HU0558
 HU0558_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3100535925(NAD 83)
 HU0558
 HU0558                          SUPERSEDED SURVEY CONTROL
 HU0558
 HU0558  NGVD 29 (06/12/91)    1.094  (m)            3.59   (f) ADJUSTED    1 1
 HU0558  NGVD 29 (??/??/87)    1.094  (m)            3.59   (f) SUPERSEDED  1 1
 HU0558
 HU0558.Superseded values are not recommended for survey control.
 HU0558
 HU0558.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0558.See file dsdata.pdf to determine how the superseded data were derived.
 HU0558
 HU0558_MARKER: DB = BENCH MARK DISK
 HU0558_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0558_STAMPING: NO 4 1931
 HU0558_MARK LOGO: CGS
 HU0558_PROJECTION: RECESSED 3 CENTIMETERS
 HU0558_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0558+STABILITY: SURFACE MOTION
 HU0558_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0558+SATELLITE: SATELLITE OBSERVATIONS - February 23, 2022
 HU0558
 HU0558  HISTORY     - Date     Condition        Report By
 HU0558  HISTORY     - 1931     MONUMENTED       CGS
 HU0558  HISTORY     - 1963     GOOD             CGS
 HU0558  HISTORY     - 19900308 GOOD             NGS
 HU0558  HISTORY     - 20010226 GOOD             USPSQD
 HU0558  HISTORY     - 20190425 GOOD             PROFLN
 HU0558  HISTORY     - 20220223 GOOD             NGS
 HU0558
 HU0558                          STATION DESCRIPTION
 HU0558
 HU0558'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0558'AT WHITEHAVEN.
 HU0558'AT WHITEHAVEN, AT THE NORTHWEST CORNER OF THE INTERSECTION OF A
 HU0558'ROAD LEADING TO THE FERRY AND A ROAD LEADING EAST AND WEST, 17.2
 HU0558'FEET WEST OF CENTER LINE OF ROAD LEADING TO FERRY LANDING, AND
 HU0558'SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES.
 HU0558
 HU0558                          STATION RECOVERY (1990)
 HU0558
 HU0558'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0558'IN WHITEHAVEN, AT THE INTERSECTION OF RIVER STREET AND WHITEHAVEN
 HU0558'ROAD 9.0 M (29.53 FT) NORTH OF AND LEVEL WITH THE STREET, 5.4 M
 HU0558'(17.72 FT) WEST OF THE CENTER OF THE ROAD, 5.1 M (16.73 FT) SOUTHEAST
 HU0558'OF THE SOUTHEAST CORNER OF A HOUSE, AND IN A CONCRETE MONUMENT THAT
 HU0558'IS FLUSH WITH THE GROUND SURFACE.
 HU0558
 HU0558                          STATION RECOVERY (2001)
 HU0558
 HU0558'RECOVERY NOTE BY US POWER SQUADRON 2001 (GVS)
 HU0558'RECOVERED IN GOOD CONDITION.
 HU0558
 HU0558                          STATION RECOVERY (2019)
 HU0558
 HU0558'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU0558'THE MARK IS IN LINE WITH THE SOUTHERLY LINE OF THE MAIN PART OF THE
 HU0558'HOTEL ACROSS WHITEHAVEN ROAD, 14 FT (4.3 M) EAST OF THE EAST LINE OF
 HU0558'THE PORCH OF HOUSE 23858 ON THE CORNER - 3 STORY FRAME - 9 FT (2.7 M)
 HU0558'SOUTH OF THE SOUTH LINE OF THE PORCH, COVERED BY GRASS.
 HU0558
 HU0558                          STATION RECOVERY (2022)
 HU0558
 HU0558'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (JL)
 HU0558'MARK RECOVERED IN GOOD CONDITION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0462 ***********************************************************************
 HV0462  TIDAL BM    -  This is a Tidal Bench Mark.
 HV0462  DESIGNATION -  857 1519 TIDAL 1
 HV0462  PID         -  HV0462
 HV0462  STATE/COUNTY-  MD/DORCHESTER
 HV0462  COUNTRY     -  US
 HV0462  USGS QUAD   -  HONGA (2016)
 HV0462
 HV0462                         *CURRENT SURVEY CONTROL
 HV0462  ______________________________________________________________________
 HV0462* NAD 83(1986) POSITION- 38 17 57.     (N) 076 12 23.     (W)   SCALED
 HV0462* NAVD 88 ORTHO HEIGHT -     0.604 (meters)        1.98  (feet) ADJUSTED
 HV0462  ______________________________________________________________________
 HV0462  GEOID HEIGHT    -        -35.237 (meters)                     GEOID18
 HV0462  DYNAMIC HEIGHT  -          0.604 (meters)        1.98  (feet) COMP
 HV0462  MODELED GRAVITY -    979,989.9   (mgal)                       NAVD 88
 HV0462
 HV0462  VERT ORDER      -  FIRST     CLASS II
 HV0462
 HV0462.The horizontal coordinates were scaled from a map and have
 HV0462.an estimated accuracy of +/- 6 seconds.
 HV0462
 HV0462.The orthometric height was determined by differential leveling and
 HV0462.adjusted by the NATIONAL GEODETIC SURVEY
 HV0462.in June 1991.
 HV0462
 HV0462.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0462.GEOID18 height accuracy estimate available here.
 HV0462
 HV0462.This Tidal Bench Mark is designated as VM 14191
 HV0462.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0462
 HV0462.Click photographs - Photos may exist for this station.
 HV0462
 HV0462.The dynamic height is computed by dividing the NAVD 88
 HV0462.geopotential number by the normal gravity value computed on the
 HV0462.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0462.degrees latitude (g = 980.6199 gals.).
 HV0462
 HV0462.The modeled gravity was interpolated from observed gravity values.
 HV0462
 HV0462;                    North         East    Units  Estimated Accuracy
 HV0462;SPC MD       -    70,510.      469,420.      MT  (+/- 180 meters Scaled)
 HV0462
 HV0462_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH945396(NAD 83)
 HV0462
 HV0462                          SUPERSEDED SURVEY CONTROL
 HV0462
 HV0462  NGVD 29 (11/26/84)    0.848  (m)            2.78   (f) ADJUSTED    1 2
 HV0462
 HV0462.Superseded values are not recommended for survey control.
 HV0462
 HV0462.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0462.See file dsdata.pdf to determine how the superseded data were derived.
 HV0462
 HV0462_MARKER: DB = BENCH MARK DISK
 HV0462_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0462_SP_SET: SLAB
 HV0462_STAMPING: NO 1 1970
 HV0462_MARK LOGO: CGS
 HV0462_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0462
 HV0462  HISTORY     - Date     Condition        Report By
 HV0462  HISTORY     - 1970     MONUMENTED       NGS
 HV0462  HISTORY     - 1971     GOOD             NGS
 HV0462  HISTORY     - 20060326 MARK NOT FOUND   USPSQD
 HV0462
 HV0462                          STATION DESCRIPTION
 HV0462
 HV0462'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0462'3.2 MI S FROM FISHING CREEK.
 HV0462'ABOUT 3.15 MILES SOUTH ALONG HOOPER ISLAND ROAD FROM THE POST
 HV0462'OFFICE AT FISHING CREEK, NEAR THE SOUTHEAST POINT OF UPPER
 HV0462'HOOPER ISLAND, AT FERRY POINT, 99.3 FEET NORTHWEST OF THE
 HV0462'NORTHWEST END OF THE WOODEN BRIDGE THAT CONNECTS UPPER HOOPER
 HV0462'ISLAND AND MIDDLE HOOPER ISLAND, 18 1/2 FEET WEST OF THE CENTER
 HV0462'LINE OF THE ROAD, SET IN THE TOP OF A CONCRETE SLAB, 32.8 FEET
 HV0462'WEST AND ACROSS THE ROAD FROM THE NORTHWEST CORNER OF A BUILDING
 HV0462'WHICH IS USED BY THE BRIDGE TENDER, 4.2 FEET EAST OF THE WEST
 HV0462'EDGE OF THE SEAWALL, 73.0 FEET SOUTHWEST AND ACROSS THE ROAD FROM
 HV0462'BENCH MARK B 130, AND ABOUT 2 FEET BELOW THE LEVEL OF THE
 HV0462'ROAD.  THIS MARK IS ALSO ABOUT 3.2 MILES NORTH-NORTHWEST ALONG
 HV0462'HOOPER ISLAND ROAD FROM THE HOOPERSVILLE METHODIST EPISCOPAL
 HV0462'CHURCH.
 HV0462
 HV0462                          STATION RECOVERY (2006)
 HV0462
 HV0462'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 HV0462'SEE HV0460 AND HV0461.  WOODEN BRIDGE, BRIDGE ACCESS RAMPS,
 HV0462'GUARDRAILS, BRIDGE TENDER SHACK AND LIGHT STRUCTURES DO NOT EXIST.
 HV0462'ALL HAVE BEEN REPLACED BY A NEW, HIGH CONCRETE FIXED BRIDGE IN 1980.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0460 ***********************************************************************
 HV0460  DESIGNATION -  857 1519 TIDAL 2
 HV0460  PID         -  HV0460
 HV0460  STATE/COUNTY-  MD/DORCHESTER
 HV0460  COUNTRY     -  US
 HV0460  USGS QUAD   -  HONGA (2016)
 HV0460
 HV0460                         *CURRENT SURVEY CONTROL
 HV0460  ______________________________________________________________________
 HV0460* NAD 83(1986) POSITION- 38 18 03.     (N) 076 12 35.     (W)   SCALED
 HV0460* NAVD 88 ORTHO HEIGHT -     0.663 (meters)        2.18  (feet) ADJUSTED
 HV0460  ______________________________________________________________________
 HV0460  GEOID HEIGHT    -        -35.225 (meters)                     GEOID18
 HV0460  DYNAMIC HEIGHT  -          0.663 (meters)        2.18  (feet) COMP
 HV0460  MODELED GRAVITY -    979,990.5   (mgal)                       NAVD 88
 HV0460
 HV0460  VERT ORDER      -  FIRST     CLASS II
 HV0460
 HV0460.The horizontal coordinates were scaled from a map and have
 HV0460.an estimated accuracy of +/- 6 seconds.
 HV0460
 HV0460.The orthometric height was determined by differential leveling and
 HV0460.adjusted by the NATIONAL GEODETIC SURVEY
 HV0460.in June 1991.
 HV0460
 HV0460.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0460.GEOID18 height accuracy estimate available here.
 HV0460
 HV0460.Click photographs - Photos may exist for this station.
 HV0460
 HV0460.The dynamic height is computed by dividing the NAVD 88
 HV0460.geopotential number by the normal gravity value computed on the
 HV0460.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0460.degrees latitude (g = 980.6199 gals.).
 HV0460
 HV0460.The modeled gravity was interpolated from observed gravity values.
 HV0460
 HV0460;                    North         East    Units  Estimated Accuracy
 HV0460;SPC MD       -    70,700.      469,130.      MT  (+/- 180 meters Scaled)
 HV0460
 HV0460_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH942398(NAD 83)
 HV0460
 HV0460                          SUPERSEDED SURVEY CONTROL
 HV0460
 HV0460  NGVD 29 (11/26/84)    0.906  (m)            2.97   (f) ADJUSTED    1 2
 HV0460
 HV0460.Superseded values are not recommended for survey control.
 HV0460
 HV0460.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0460.See file dsdata.pdf to determine how the superseded data were derived.
 HV0460
 HV0460_MARKER: DB = BENCH MARK DISK
 HV0460_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0460_SP_SET: SLAB
 HV0460_STAMPING: NO 2 1970
 HV0460_MARK LOGO: CGS
 HV0460_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0460
 HV0460  HISTORY     - Date     Condition        Report By
 HV0460  HISTORY     - 1970     MONUMENTED       NGS
 HV0460  HISTORY     - 1971     GOOD             NGS
 HV0460  HISTORY     - 20060326 MARK NOT FOUND   USPSQD
 HV0460
 HV0460                          STATION DESCRIPTION
 HV0460
 HV0460'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0460'3 MI S FROM FISHING CREEK.
 HV0460'ABOUT 2.95 MILES SOUTH ALONG HOOPER ISLAND ROAD FROM THE POST
 HV0460'OFFICE AT FISHING CREEK, 13 1/2 FEET NORTHEAST OF THE CENTER
 HV0460'LINE OF THE ROAD, SET IN THE TOP OF A CONCRETE SLAB ON THE SHOULDER
 HV0460'OF THE ROAD, 72.0 FEET SOUTHEAST OF THE NORTHWEST END OF THE
 HV0460'CONCRETE SLABS, NORTHEAST AND ACROSS THE ROAD FROM TELEPHONE
 HV0460'POLE NUMBER 195, 7.0 FEET NORTH OF THE NORTHWEST END OF A
 HV0460'GUARDRAIL, 6.1 FEET SOUTHEAST OF THE NORTHEAST EDGE OF THE
 HV0460'SEAWALL, AND ABOUT 1 FOOT BELOW THE LEVEL OF THE ROAD.
 HV0460
 HV0460                          STATION RECOVERY (2006)
 HV0460
 HV0460'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 HV0460'SEE HV0461 AND HV0462.  WOODEN BRIDGE, BRIDGE ACCESS RAMPS,
 HV0460'GUARDRAILS, BRIDGE TENDER SHACK AND LIGHT STRUCTURES DO NOT EXIST.
 HV0460'ALL HAVE BEEN REPLACED BY A NEW, HIGH CONCRETE FIXED BRIDGE IN 1980.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8224 ***********************************************************************
 AJ8224  TIDAL BM    -  This is a Tidal Bench Mark.
 AJ8224  DESIGNATION -  857 1579 B TIDAL
 AJ8224  PID         -  AJ8224
 AJ8224  STATE/COUNTY-  MD/DORCHESTER
 AJ8224  COUNTRY     -  US
 AJ8224  USGS QUAD   -  BARREN ISLAND (2016)
 AJ8224
 AJ8224                         *CURRENT SURVEY CONTROL
 AJ8224  ______________________________________________________________________
 AJ8224* NAD 83(2011) POSITION- 38 20 26.45283(N) 076 15 46.64836(W)   ADJUSTED
 AJ8224* NAD 83(2011) ELLIP HT-   -34.107 (meters)        (06/27/12)   ADJUSTED
 AJ8224* NAD 83(2011) EPOCH   -  2010.00
 AJ8224* NAVD 88 ORTHO HEIGHT -     0.8   (meters)        3.    (feet) GPS OBS
 AJ8224  ______________________________________________________________________
 AJ8224  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8224  GEOID HEIGHT    -        -34.897 (meters)                     GEOID99
 AJ8224  GEOID HEIGHT    -        -34.963 (meters)                     GEOID18
 AJ8224  NAD 83(2011) X  -  1,189,475.975 (meters)                     COMP
 AJ8224  NAD 83(2011) Y  - -4,865,753.179 (meters)                     COMP
 AJ8224  NAD 83(2011) Z  -  3,935,152.461 (meters)                     COMP
 AJ8224  LAPLACE CORR    -         -6.83  (seconds)                    DEFLEC18
 AJ8224
 AJ8224  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8224  Standards:
 AJ8224         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8224            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8224  -------------------------------------------------------------------
 AJ8224  NETWORK    1.40   1.82           0.57   0.56   0.93      0.28000985
 AJ8224  -------------------------------------------------------------------
 AJ8224  Click here for local accuracies and other accuracy information.
 AJ8224
 AJ8224.The horizontal coordinates were established by GPS observations
 AJ8224.and adjusted by the National Geodetic Survey in June 2012.
 AJ8224
 AJ8224.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8224.been affixed to the stable North American tectonic plate. See 
 AJ8224.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8224
 AJ8224.The horizontal coordinates are valid at the epoch date displayed above
 AJ8224.which is a decimal equivalence of Year/Month/Day.
 AJ8224
 AJ8224.The orthometric height was determined by GPS observations and a
 AJ8224.high-resolution geoid model.
 AJ8224
 AJ8224.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8224.GEOID18 height accuracy estimate available here.
 AJ8224
 AJ8224.This Tidal Bench Mark is designated as VM 16625
 AJ8224.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AJ8224
 AJ8224.Click photographs - Photos may exist for this station.
 AJ8224
 AJ8224.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8224
 AJ8224.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8224
 AJ8224.The ellipsoidal height was determined by GPS observations
 AJ8224.and is referenced to NAD 83.
 AJ8224
 AJ8224. The following values were computed from the NAD 83(2011) position.
 AJ8224
 AJ8224;                    North         East     Units Scale Factor Converg.
 AJ8224;SPC MD       -    75,078.688   464,434.456   MT  0.99999317   +0 27 45.3
 AJ8224;SPC MD       -   246,320.66  1,523,732.04   sFT  0.99999317   +0 27 45.3
 AJ8224;UTM  18      - 4,244,370.096   389,628.526   MT  0.99975002   -0 47 00.7
 AJ8224
 AJ8224!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8224!SPC MD       -   1.00000535  x   0.99999317  =   0.99999852
 AJ8224!UTM  18      -   1.00000535  x   0.99975002  =   0.99975537
 AJ8224
 AJ8224_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8962844370(NAD 83)
 AJ8224
 AJ8224|---------------------------------------------------------------------|
 AJ8224| PID    Reference Object                     Distance      Geod. Az  |
 AJ8224|                                                           dddmmss.s |
 AJ8224| AJ8227 857 1579 E TIDAL                    264.762 METERS 16801     |
 AJ8224|---------------------------------------------------------------------|
 AJ8224
 AJ8224                          SUPERSEDED SURVEY CONTROL
 AJ8224
 AJ8224  NAD 83(2007)-  38 20 26.45304(N)    076 15 46.64925(W) AD(2002.00) 0
 AJ8224  ELLIP H (02/10/07)  -34.088  (m)                       GP(2002.00)    
 AJ8224  ELLIP H (08/09/02)  -34.081  (m)                       GP(       ) 3 2
 AJ8224  NAD 83(1991)-  38 20 26.45289(N)    076 15 46.64923(W) AD(       ) A
 AJ8224  ELLIP H (03/12/02)  -34.081  (m)                       GP(       ) 4 2
 AJ8224
 AJ8224.Superseded values are not recommended for survey control.
 AJ8224
 AJ8224.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8224.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8224
 AJ8224_MARKER: F = FLANGE-ENCASED ROD
 AJ8224_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 AJ8224_STAMPING: 1579 B 2001
 AJ8224_MARK LOGO: NGS
 AJ8224_PROJECTION: PROJECTING 1 CENTIMETERS
 AJ8224_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8224_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ8224_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8224+SATELLITE: SATELLITE OBSERVATIONS - 2001
 AJ8224_ROD/PIPE-DEPTH: 53.6 meters
 AJ8224_SLEEVE-DEPTH  : 0.9 meters
 AJ8224
 AJ8224  HISTORY     - Date     Condition        Report By
 AJ8224  HISTORY     - 2001     MONUMENTED       NGS
 AJ8224  HISTORY     - 20040913 GOOD             NGS
 AJ8224
 AJ8224                          STATION DESCRIPTION
 AJ8224
 AJ8224'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (RWA)
 AJ8224'BARREN ISLAND IS APPROXIMATELY 22.0 MILES (35.4 KM) SOUTHWEST OF
 AJ8224'CAMBRIDGE, ABOUT A 10 MINUTE BOAT RIDE FROM FISHING CREEK AT A SMALL
 AJ8224'BOAT DOCK AT TYLER COVE. OWNERSHIP--FEDERAL LAND, OPEREATED BY THE
 AJ8224'U.S. FISH AND WILDLIFE DEPARTMENT. CONTACT--MR JOHN GILL WITH THE U.S.
 AJ8224'FISH AND WILDLIFE SERVICE AT 410 228 2692 EXT 118. TO REACH FROM THE
 AJ8224'BOAT DOCK NEAR HONGA, GO WEST-SOUTHWEST BY BOAT FOLLOWING A NARROW
 AJ8224'CHANNEL UNTIL THE BAY WATERS ARE ENTERED, CONTINUE WESTERLY UNTIL THE
 AJ8224'LAST BOUY LIGHT, THENCE MAKE A WIDE TURN SOUTH (SUNKEN OBSTRUCTIONS
 AJ8224'NEAR BARREN ISLAND) FOR APPROXIMATELY 0.8 MI (1.28 KM) PASSING
 AJ8224'NORTHWEST CORNER OF ISLAND, CONTINUE 0.2 MI (0.32 KM) SOUTH ALONG WEST
 AJ8224'SIDE OF ISLAND, THENCE TURN EAST AND PROCEED WITH CAUTION TO THE
 AJ8224'ISLAND.  ONCE ON ISLAND GO NORTH ALONG WEST SIDE OF BEACH 0.2 MILE
 AJ8224'(0.32 KM) TO A Y JUNCTION FOR A TRUCK TRAIL, THENCE EASTERLY ALONG
 AJ8224'TRUCK TRAIL FOR 0.15 MI (0.24 KM) PASSING BM 857 1579 C TIDAL TO A
 AJ8224'DIRT Y JUNCTION, AND MARK ON EAST SIDE OF JUNCTION,  ALSO 0.1 MI (0.16
 AJ8224'KM) SOUTHEAST ALONG TRUCK TRAIL FROM 857 1579 A TIDAL, AND 0.05 (0.08
 AJ8224'KM) EAST OF 857 1579 C, 2.9 FEET (0.9 M) WEST-SOUTHWEST OF A
 AJ8224'FIBERGLASS CARSONITE WITNESS POST,  10.7 FEET (3.3 M) NORTHEAST OF
 AJ8224'CENTERLINE A TRUCK TRAIL, 44.5 FEET (13.6 M) EAST OF THE CENTER OF A Y
 AJ8224'JUNCTION. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO
 AJ8224'CAP.  THE SLEEVE DEPTH DOES NOT MEET THE SPECIFICATIONS FOR A CLASS A
 AJ8224'MARK.
 AJ8224
 AJ8224                          STATION RECOVERY (2004)
 AJ8224
 AJ8224'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2004 (DBC)
 AJ8224'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8225 ***********************************************************************
 AJ8225  TIDAL BM    -  This is a Tidal Bench Mark.
 AJ8225  DESIGNATION -  857 1579 C TIDAL
 AJ8225  PID         -  AJ8225
 AJ8225  STATE/COUNTY-  MD/DORCHESTER
 AJ8225  COUNTRY     -  US
 AJ8225  USGS QUAD   -  BARREN ISLAND (2016)
 AJ8225
 AJ8225                         *CURRENT SURVEY CONTROL
 AJ8225  ______________________________________________________________________
 AJ8225* NAD 83(2011) POSITION- 38 20 26.14934(N) 076 15 51.25139(W)   ADJUSTED
 AJ8225* NAD 83(2011) ELLIP HT-   -34.330 (meters)        (06/27/12)   ADJUSTED
 AJ8225* NAD 83(2011) EPOCH   -  2010.00
 AJ8225* NAVD 88 ORTHO HEIGHT -     0.6   (meters)        2.    (feet) GPS OBS
 AJ8225  ______________________________________________________________________
 AJ8225  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8225  GEOID HEIGHT    -        -34.893 (meters)                     GEOID99
 AJ8225  GEOID HEIGHT    -        -34.959 (meters)                     GEOID18
 AJ8225  NAD 83(2011) X  -  1,189,368.726 (meters)                     COMP
 AJ8225  NAD 83(2011) Y  - -4,865,785.191 (meters)                     COMP
 AJ8225  NAD 83(2011) Z  -  3,935,144.983 (meters)                     COMP
 AJ8225  LAPLACE CORR    -         -6.83  (seconds)                    DEFLEC18
 AJ8225
 AJ8225  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8225  Standards:
 AJ8225         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8225            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8225  -------------------------------------------------------------------
 AJ8225  NETWORK    1.59   2.06           0.65   0.63   1.05      0.34571621
 AJ8225  -------------------------------------------------------------------
 AJ8225  Click here for local accuracies and other accuracy information.
 AJ8225
 AJ8225.The horizontal coordinates were established by GPS observations
 AJ8225.and adjusted by the National Geodetic Survey in June 2012.
 AJ8225
 AJ8225.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8225.been affixed to the stable North American tectonic plate. See 
 AJ8225.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8225
 AJ8225.The horizontal coordinates are valid at the epoch date displayed above
 AJ8225.which is a decimal equivalence of Year/Month/Day.
 AJ8225
 AJ8225.The orthometric height was determined by GPS observations and a
 AJ8225.high-resolution geoid model.
 AJ8225
 AJ8225.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8225.GEOID18 height accuracy estimate available here.
 AJ8225
 AJ8225.This Tidal Bench Mark is designated as VM 16626
 AJ8225.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AJ8225
 AJ8225.Click photographs - Photos may exist for this station.
 AJ8225
 AJ8225.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8225
 AJ8225.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8225
 AJ8225.The ellipsoidal height was determined by GPS observations
 AJ8225.and is referenced to NAD 83.
 AJ8225
 AJ8225. The following values were computed from the NAD 83(2011) position.
 AJ8225
 AJ8225;                    North         East     Units Scale Factor Converg.
 AJ8225;SPC MD       -    75,068.428   464,322.753   MT  0.99999319   +0 27 42.4
 AJ8225;SPC MD       -   246,287.00  1,523,365.57   sFT  0.99999319   +0 27 42.4
 AJ8225;UTM  18      - 4,244,362.270   389,516.653   MT  0.99975033   -0 47 03.6
 AJ8225
 AJ8225!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8225!SPC MD       -   1.00000539  x   0.99999319  =   0.99999858
 AJ8225!UTM  18      -   1.00000539  x   0.99975033  =   0.99975572
 AJ8225
 AJ8225_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8951644362(NAD 83)
 AJ8225
 AJ8225|---------------------------------------------------------------------|
 AJ8225| PID    Reference Object                     Distance      Geod. Az  |
 AJ8225|                                                           dddmmss.s |
 AJ8225| AJ8227 857 1579 E TIDAL                    300.199 METERS 14616     |
 AJ8225| AJ8223 857 1579 A TIDAL                    104.594 METERS 35210     |
 AJ8225|---------------------------------------------------------------------|
 AJ8225
 AJ8225                          SUPERSEDED SURVEY CONTROL
 AJ8225
 AJ8225  NAD 83(2007)-  38 20 26.14955(N)    076 15 51.25228(W) AD(2002.00) 0
 AJ8225  ELLIP H (02/10/07)  -34.310  (m)                       GP(2002.00)    
 AJ8225  ELLIP H (08/09/02)  -34.303  (m)                       GP(       ) 3 2
 AJ8225  NAD 83(1991)-  38 20 26.14939(N)    076 15 51.25226(W) AD(       ) A
 AJ8225  ELLIP H (03/12/02)  -34.303  (m)                       GP(       ) 4 2
 AJ8225
 AJ8225.Superseded values are not recommended for survey control.
 AJ8225
 AJ8225.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8225.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8225
 AJ8225_MARKER: F = FLANGE-ENCASED ROD
 AJ8225_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 AJ8225_STAMPING: 1579 C 2001
 AJ8225_MARK LOGO: NGS
 AJ8225_PROJECTION: PROJECTING 2 CENTIMETERS
 AJ8225_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8225_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ8225_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8225+SATELLITE: SATELLITE OBSERVATIONS - 2001
 AJ8225_ROD/PIPE-DEPTH: 24.4 meters
 AJ8225_SLEEVE-DEPTH  : 0.9 meters
 AJ8225
 AJ8225  HISTORY     - Date     Condition        Report By
 AJ8225  HISTORY     - 2001     MONUMENTED       NGS
 AJ8225  HISTORY     - 20040913 GOOD             NGS
 AJ8225
 AJ8225                          STATION DESCRIPTION
 AJ8225
 AJ8225'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (RWA)
 AJ8225'BARREN ISLAND IS APPROXIMATELY 22.0 MILES (35.4 KM) SOUTHWEST OF
 AJ8225'CAMBRIDGE, ABOUT A 10 MINUTE BOAT RIDE FROM FISHING CREEK AT A SMALL
 AJ8225'BOAT DOCK AT TYLER COVE. OWNERSHIP--FEDERAL LAND, OPEREATED BY THE
 AJ8225'U.S. FISH AND WILDLIFE DEPARTMENT. CONTACT--MR JOHN GILL WITH THE U.S.
 AJ8225'FISH AND WILDLIFE SERVICE AT 410 228 2692 EXT 118. TO REACH FROM THE
 AJ8225'BOAT DOCK NEAR HONGA, GO WEST-SOUTHWEST BY BOAT FOLLOWING A NARROW
 AJ8225'CHANNEL UNTIL THE BAY WATERS ARE ENTERED, CONTINUE WESTERLY UNTIL THE
 AJ8225'LAST BOUY LIGHT, THENCE MAKE A WIDE TURN SOUTH (SUNKEN OBSTRUCTIONS
 AJ8225'NEAR BARREN ISLAND) FOR APPROXIMATELY 0.8 MI (1.28 KM) PASSING
 AJ8225'NORTHWEST CORNER OF ISLAND, CONTINUE 0.2 MI (0.32 KM) SOUTH ALONG WEST
 AJ8225'SIDE OF ISLAND, THENCE TURN EAST AND PROCEED WITH CAUTION TO THE
 AJ8225'ISLAND.  ONCE ON ISLAND GO NORTH ALONG WEST SIDE OF BEACH 0.2 MILE
 AJ8225'(0.32 KM) TO A Y JUNCTION FOR A TRUCK TRAIL, THENCE EASTERLY 0.05 MI
 AJ8225'(0.08 KM) TO MARK ON THE LEFT,  28.2 FEET (8.6 M) EAST OF A LONE PINE
 AJ8225'TREE, 2.1 FEET (0.6 M) SOUTHEAST OF A FIBERGLASS CARSONITE WITNESS
 AJ8225'POST, 29.1 FEET (8.9 M) NORTHWEST OF THE CENTERLINE OF THE TRUCK
 AJ8225'TRAIL. ALSO 0.08 MI (0.08 KM) WEST OF 857 1579 B TIDAL, AND 0.05 MI
 AJ8225'(0.08 KM) EASTERLY OF BM 3BB1-3. NOTE--ACCESS TO THE DATUM POINT IS
 AJ8225'THROUGH A 5-INCH LOGO CAP.  THE SLEEVE DEPTH DOES NOT MEET THE
 AJ8225'SPECIFICATIONS FOR A CLASS A MARK.
 AJ8225
 AJ8225                          STATION RECOVERY (2004)
 AJ8225
 AJ8225'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2004 (DBC)
 AJ8225'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8226 ***********************************************************************
 AJ8226  TIDAL BM    -  This is a Tidal Bench Mark.
 AJ8226  DESIGNATION -  857 1579 D TIDAL
 AJ8226  PID         -  AJ8226
 AJ8226  STATE/COUNTY-  MD/DORCHESTER
 AJ8226  COUNTRY     -  US
 AJ8226  USGS QUAD   -  BARREN ISLAND (2016)
 AJ8226
 AJ8226                         *CURRENT SURVEY CONTROL
 AJ8226  ______________________________________________________________________
 AJ8226* NAD 83(2011) POSITION- 38 20 23.58743(N) 076 15 50.68950(W)   ADJUSTED
 AJ8226* NAD 83(2011) ELLIP HT-   -34.196 (meters)        (06/27/12)   ADJUSTED
 AJ8226* NAD 83(2011) EPOCH   -  2010.00
 AJ8226* NAVD 88 ORTHO HEIGHT -     0.7   (meters)        2.    (feet) GPS OBS
 AJ8226  ______________________________________________________________________
 AJ8226  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8226  GEOID HEIGHT    -        -34.895 (meters)                     GEOID99
 AJ8226  GEOID HEIGHT    -        -34.961 (meters)                     GEOID18
 AJ8226  NAD 83(2011) X  -  1,189,393.642 (meters)                     COMP
 AJ8226  NAD 83(2011) Y  - -4,865,829.654 (meters)                     COMP
 AJ8226  NAD 83(2011) Z  -  3,935,083.108 (meters)                     COMP
 AJ8226  LAPLACE CORR    -         -6.83  (seconds)                    DEFLEC18
 AJ8226
 AJ8226  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8226  Standards:
 AJ8226         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8226            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8226  -------------------------------------------------------------------
 AJ8226  NETWORK    1.40   1.80           0.56   0.57   0.92      0.32510080
 AJ8226  -------------------------------------------------------------------
 AJ8226  Click here for local accuracies and other accuracy information.
 AJ8226
 AJ8226.The horizontal coordinates were established by GPS observations
 AJ8226.and adjusted by the National Geodetic Survey in June 2012.
 AJ8226
 AJ8226.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8226.been affixed to the stable North American tectonic plate. See 
 AJ8226.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8226
 AJ8226.The horizontal coordinates are valid at the epoch date displayed above
 AJ8226.which is a decimal equivalence of Year/Month/Day.
 AJ8226
 AJ8226.The orthometric height was determined by GPS observations and a
 AJ8226.high-resolution geoid model.
 AJ8226
 AJ8226.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8226.GEOID18 height accuracy estimate available here.
 AJ8226
 AJ8226.This Tidal Bench Mark is designated as VM 16627
 AJ8226.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AJ8226
 AJ8226.Click photographs - Photos may exist for this station.
 AJ8226
 AJ8226.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8226
 AJ8226.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8226
 AJ8226.The ellipsoidal height was determined by GPS observations
 AJ8226.and is referenced to NAD 83.
 AJ8226
 AJ8226. The following values were computed from the NAD 83(2011) position.
 AJ8226
 AJ8226;                    North         East     Units Scale Factor Converg.
 AJ8226;SPC MD       -    74,989.547   464,337.035   MT  0.99999330   +0 27 42.8
 AJ8226;SPC MD       -   246,028.21  1,523,412.42   sFT  0.99999330   +0 27 42.8
 AJ8226;UTM  18      - 4,244,283.116   389,529.213   MT  0.99975029   -0 47 03.2
 AJ8226
 AJ8226!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8226!SPC MD       -   1.00000537  x   0.99999330  =   0.99999867
 AJ8226!UTM  18      -   1.00000537  x   0.99975029  =   0.99975565
 AJ8226
 AJ8226_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8952944283(NAD 83)
 AJ8226
 AJ8226|---------------------------------------------------------------------|
 AJ8226| PID    Reference Object                     Distance      Geod. Az  |
 AJ8226|                                                           dddmmss.s |
 AJ8226| AJ8227 857 1579 E TIDAL                    229.249 METERS 13806     |
 AJ8226|---------------------------------------------------------------------|
 AJ8226
 AJ8226                          SUPERSEDED SURVEY CONTROL
 AJ8226
 AJ8226  NAD 83(2007)-  38 20 23.58764(N)    076 15 50.69039(W) AD(2002.00) 0
 AJ8226  ELLIP H (02/10/07)  -34.176  (m)                       GP(2002.00)    
 AJ8226  ELLIP H (08/09/02)  -34.170  (m)                       GP(       ) 3 2
 AJ8226  NAD 83(1991)-  38 20 23.58748(N)    076 15 50.69038(W) AD(       ) A
 AJ8226  ELLIP H (03/12/02)  -34.170  (m)                       GP(       ) 4 2
 AJ8226
 AJ8226.Superseded values are not recommended for survey control.
 AJ8226
 AJ8226.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8226.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8226
 AJ8226_MARKER: F = FLANGE-ENCASED ROD
 AJ8226_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 AJ8226_STAMPING: 1579 D 2001
 AJ8226_MARK LOGO: NGS
 AJ8226_PROJECTION: PROJECTING 9 CENTIMETERS
 AJ8226_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8226_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ8226_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8226+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2005
 AJ8226_ROD/PIPE-DEPTH: 24.2 meters
 AJ8226_SLEEVE-DEPTH  : 0.9 meters
 AJ8226
 AJ8226  HISTORY     - Date     Condition        Report By
 AJ8226  HISTORY     - 2001     MONUMENTED       NGS
 AJ8226  HISTORY     - 20040914 GOOD             NGS
 AJ8226  HISTORY     - 20050909 GOOD             USPSQD
 AJ8226
 AJ8226                          STATION DESCRIPTION
 AJ8226
 AJ8226'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (RWA)
 AJ8226'BARREN ISLAND IS APPROXIMATELY 22.0 MILES (35.4 KM) SOUTHWEST OF
 AJ8226'CAMBRIDGE, ABOUT A 10 MINUTE BOAT RIDE FROM FISHING CREEK AT A SMALL
 AJ8226'BOAT DOCK AT TYLER COVE. OWNERSHIP--FEDERAL LAND, OPEREATED BY THE
 AJ8226'U.S. FISH AND WILDLIFE DEPARTMENT. CONTACT--MR JOHN GILL WITH THE U.S.
 AJ8226'FISH AND WILDLIFE SERVICE AT 410 228 2692 EXT 118. TO REACH FROM THE
 AJ8226'BOAT DOCK NEAR HONGA, GO WEST-SOUTHWEST BY BOAT FOLLOWING A NARROW
 AJ8226'CHANNEL UNTIL THE BAY WATERS ARE ENTERED, CONTINUE WESTERLY UNTIL THE
 AJ8226'LAST BOUY LIGHT, THENCE MAKE A WIDE TURN SOUTH (SUNKEN OBSTRUCTIONS
 AJ8226'NEAR BARREN ISLAND) FOR APPROXIMATELY 0.8 MI (1.28 KM) PASSING
 AJ8226'NORTHWEST CORNER OF ISLAND, CONTINUE 0.2 MI (0.32 KM) SOUTH ALONG WEST
 AJ8226'SIDE OF ISLAND, THENCE TURN EAST AND PROCEED WITH CAUTION TO THE
 AJ8226'ISLAND.  ONCE ON ISLAND GO NORTH ALONG BEACH ON THE WEST SIDE OF
 AJ8226'ISLAND FOR 0.05 MILE (0.08 KM) THENCE 0.03 MI (0.04 KM) EASTERLY
 AJ8226'ACROSS BEACH TO A SMALL HILL ON THE EDGE OF BEACH AREA, ALSO 0.1 MI
 AJ8226'(0.16 KM) SOUTHEAST OF BM 3BB1 3, AND 0.1 MI (0.16 KM) NORTH OF BM
 AJ8226'3BB1 2,  1.7 FEET (0.5 M) WEST-SOUTHWEST OF A FIBERGLASS CARSONITE
 AJ8226'WITNESS POST, 40.7 FEET (12.4 M) SOUTH OF A PINE TREE AT EDGE OF TREE
 AJ8226'LINE. LGO CAP IS 0.6 INCHES ABOVE THE GROUND. NOTE--ACCESS TO THE
 AJ8226'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE SLEEVE DEPTH DOES NOT
 AJ8226'MEET THE SPECIFICATIONS FOR A CLASS A MARK.
 AJ8226
 AJ8226                          STATION RECOVERY (2004)
 AJ8226
 AJ8226'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2004 (DBC)
 AJ8226'RECOVERED AS DESCRIBED.
 AJ8226
 AJ8226                          STATION RECOVERY (2005)
 AJ8226
 AJ8226'RECOVERY NOTE BY US POWER SQUADRON 2005 (LGD)
 AJ8226'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8227 ***********************************************************************
 AJ8227  TIDAL BM    -  This is a Tidal Bench Mark.
 AJ8227  DESIGNATION -  857 1579 E TIDAL
 AJ8227  PID         -  AJ8227
 AJ8227  STATE/COUNTY-  MD/DORCHESTER
 AJ8227  COUNTRY     -  US
 AJ8227  USGS QUAD   -  BARREN ISLAND (2016)
 AJ8227
 AJ8227                         *CURRENT SURVEY CONTROL
 AJ8227  ______________________________________________________________________
 AJ8227* NAD 83(2011) POSITION- 38 20 18.05312(N) 076 15 44.38580(W)   ADJUSTED
 AJ8227* NAD 83(2011) ELLIP HT-   -34.210 (meters)        (06/27/12)   ADJUSTED
 AJ8227* NAD 83(2011) EPOCH   -  2010.00
 AJ8227* NAVD 88 ORTHO HEIGHT -     0.7   (meters)        2.    (feet) GPS OBS
 AJ8227  ______________________________________________________________________
 AJ8227  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8227  GEOID HEIGHT    -        -34.905 (meters)                     GEOID99
 AJ8227  GEOID HEIGHT    -        -34.971 (meters)                     GEOID18
 AJ8227  NAD 83(2011) X  -  1,189,567.482 (meters)                     COMP
 AJ8227  NAD 83(2011) Y  - -4,865,896.117 (meters)                     COMP
 AJ8227  NAD 83(2011) Z  -  3,934,949.253 (meters)                     COMP
 AJ8227  LAPLACE CORR    -         -6.81  (seconds)                    DEFLEC18
 AJ8227
 AJ8227  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8227  Standards:
 AJ8227         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8227            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8227  -------------------------------------------------------------------
 AJ8227  NETWORK    1.28   1.63           0.52   0.51   0.83      0.32697222
 AJ8227  -------------------------------------------------------------------
 AJ8227  Click here for local accuracies and other accuracy information.
 AJ8227
 AJ8227.The horizontal coordinates were established by GPS observations
 AJ8227.and adjusted by the National Geodetic Survey in June 2012.
 AJ8227
 AJ8227.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8227.been affixed to the stable North American tectonic plate. See 
 AJ8227.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8227
 AJ8227.The horizontal coordinates are valid at the epoch date displayed above
 AJ8227.which is a decimal equivalence of Year/Month/Day.
 AJ8227
 AJ8227.The orthometric height was determined by GPS observations and a
 AJ8227.high-resolution geoid model.
 AJ8227
 AJ8227.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8227.GEOID18 height accuracy estimate available here.
 AJ8227
 AJ8227.This Tidal Bench Mark is designated as VM 16628
 AJ8227.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AJ8227
 AJ8227.Click photographs - Photos may exist for this station.
 AJ8227
 AJ8227.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8227
 AJ8227.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8227
 AJ8227.The ellipsoidal height was determined by GPS observations
 AJ8227.and is referenced to NAD 83.
 AJ8227
 AJ8227. The following values were computed from the NAD 83(2011) position.
 AJ8227
 AJ8227;                    North         East     Units Scale Factor Converg.
 AJ8227;SPC MD       -    74,820.144   464,491.492   MT  0.99999355   +0 27 46.8
 AJ8227;SPC MD       -   245,472.42  1,523,919.17   sFT  0.99999355   +0 27 46.8
 AJ8227;UTM  18      - 4,244,110.436   389,679.913   MT  0.99974988   -0 46 59.2
 AJ8227
 AJ8227!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8227!SPC MD       -   1.00000537  x   0.99999355  =   0.99999892
 AJ8227!UTM  18      -   1.00000537  x   0.99974988  =   0.99975525
 AJ8227
 AJ8227:                Primary Azimuth Mark                     Grid Az
 AJ8227:SPC MD       -  BARREN 3                                 355 53 28.2
 AJ8227:UTM  18      -  BARREN 3                                 357 08 14.2
 AJ8227
 AJ8227_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8967944110(NAD 83)
 AJ8227
 AJ8227|---------------------------------------------------------------------|
 AJ8227| PID    Reference Object                     Distance      Geod. Az  |
 AJ8227|                                                           dddmmss.s |
 AJ8227| AJ8230 33B1 1                              189.684 METERS 16958     |
 AJ8227| AJ8229 33B1 2                              125.872 METERS 28737     |
 AJ8227| AJ8231 33B1 3                              355.391 METERS 31521     |
 AJ8227| AJ8226 857 1579 D TIDAL                    229.249 METERS 31806     |
 AJ8227| AJ8225 857 1579 C TIDAL                    300.199 METERS 32616     |
 AJ8227| AJ8223 857 1579 A TIDAL                    396.918 METERS 33252     |
 AJ8227| AJ8224 857 1579 B TIDAL                    264.762 METERS 34801     |
 AJ8227| AJ8228 BARREN 3                            APPROX. 0.6 KM 3562115.0 |
 AJ8227|---------------------------------------------------------------------|
 AJ8227
 AJ8227                          SUPERSEDED SURVEY CONTROL
 AJ8227
 AJ8227  NAD 83(2007)-  38 20 18.05334(N)    076 15 44.38669(W) AD(2002.00) 0
 AJ8227  ELLIP H (02/10/07)  -34.191  (m)                       GP(2002.00)    
 AJ8227  ELLIP H (08/09/02)  -34.186  (m)                       GP(       ) 3 2
 AJ8227  NAD 83(1991)-  38 20 18.05318(N)    076 15 44.38670(W) AD(       ) A
 AJ8227  ELLIP H (03/12/02)  -34.186  (m)                       GP(       ) 4 2
 AJ8227
 AJ8227.Superseded values are not recommended for survey control.
 AJ8227
 AJ8227.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8227.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8227
 AJ8227_MARKER: F = FLANGE-ENCASED ROD
 AJ8227_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 AJ8227_STAMPING: 1579 E 2001
 AJ8227_MARK LOGO: NGS
 AJ8227_PROJECTION: PROJECTING 60 CENTIMETERS
 AJ8227_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8227_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ8227_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8227+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2005
 AJ8227_ROD/PIPE-DEPTH: 30.5 meters
 AJ8227_SLEEVE-DEPTH  : 0.9 meters
 AJ8227
 AJ8227  HISTORY     - Date     Condition        Report By
 AJ8227  HISTORY     - 2001     MONUMENTED       NGS
 AJ8227  HISTORY     - 20050909 GOOD             USPSQD
 AJ8227
 AJ8227                          STATION DESCRIPTION
 AJ8227
 AJ8227'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (RWA)
 AJ8227'BARREN ISLAND IS APPROXIMATELY 22.0 MILES (35.4 KM) SOUTHWEST OF
 AJ8227'CAMBRIDGE, ABOUT A 10 MINUTE BOAT RIDE FROM FISHING CREEK AT A SMALL
 AJ8227'BOAT DOCK AT TYLER COVE. OWNERSHIP--FEDERAL LAND, OPEREATED BY THE
 AJ8227'U.S. FISH AND WILDLIFE DEPARTMENT. CONTACT--MR JOHN GILL WITH THE U.S.
 AJ8227'FISH AND WILDLIFE SERVICE AT 410 228 2692 EXT 118. TO REACH FROM THE
 AJ8227'BOAT DOCK NEAR HONGA, GO WEST-SOUTHWEST BY BOAT FOLLOWING A NARROW
 AJ8227'CHANNEL UNTIL THE BAY WATERS ARE ENTERED, CONTINUE WESTERLY UNTIL THE
 AJ8227'LAST BOUY LIGHT, THENCE MAKE A WIDE TURN SOUTH (SUNKEN OBSTRUCTIONS
 AJ8227'NEAR BARREN ISLAND) FOR APPROXIMATELY 0.8 MI (1.28 KM) PASSING
 AJ8227'NORTHWEST CORNER OF ISLAND, CONTINUE 0.2 MI (0.32 KM) SOUTH ALONG WEST
 AJ8227'SIDE OF ISLAND, THENCE TURN EAST AND PROCEED WITH CAUTION TO THE
 AJ8227'ISLAND.  ONCE ON THE ISLAND, GO SOUTHEASTERLY ALONG THE WEST BANK TO
 AJ8227'THE MARK ON THE LEFT IN A SANDY AREA, BETWEEN THE BEACH AND MARSH
 AJ8227'LAND, ALSO 0.1 MI (0.16 KM) NORTH OF BM 3BB1 1, AND 0.1 MI (0.16
 AJ8227'KM)SOUTHEAST OF 857 1579 D TIDAL, 2.5 FEET (0.8 M) SOUTHWEST OF A
 AJ8227'FIBERGLASS CARSONITE WITNESS POST, 14.2 FEET (4.3 M) NORTHWEST OF A
 AJ8227'SMALL PVC PIPE 2 FEET (0.6 M) ABOVE GROUND. NOTE--ACCESS TO THE DATUM
 AJ8227'POINT IS THROUGH A 5-INCH LOGO CAP.  THE SLEEVE DEPTH DOES NOT MEET
 AJ8227'THE SPECIFICATIONS FOR A CLASS A MARK.
 AJ8227
 AJ8227                          STATION RECOVERY (2005)
 AJ8227
 AJ8227'RECOVERY NOTE BY US POWER SQUADRON 2005 (LGD)
 AJ8227'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0530 ***********************************************************************
 HU0530  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0530  DESIGNATION -  857 1616 TIDAL 3
 HU0530  PID         -  HU0530
 HU0530  STATE/COUNTY-  MD/WICOMICO
 HU0530  COUNTRY     -  US
 HU0530  USGS QUAD   -  SALISBURY (2016)
 HU0530
 HU0530                         *CURRENT SURVEY CONTROL
 HU0530  ______________________________________________________________________
 HU0530* NAD 83(1986) POSITION- 38 21 54.9    (N) 075 36 15.9    (W)   HD_HELD2
 HU0530* NAVD 88 ORTHO HEIGHT -     1.457 (meters)        4.78  (feet) ADJUSTED
 HU0530  ______________________________________________________________________
 HU0530  GEOID HEIGHT    -        -35.816 (meters)                     GEOID18
 HU0530  DYNAMIC HEIGHT  -          1.456 (meters)        4.78  (feet) COMP
 HU0530  MODELED GRAVITY -    980,005.4   (mgal)                       NAVD 88
 HU0530
 HU0530  VERT ORDER      -  FIRST     CLASS I
 HU0530
 HU0530.The horizontal coordinates were established by autonomous hand held GPS
 HU0530.observations and have an estimated accuracy of +/- 10 meters.
 HU0530
 HU0530.The orthometric height was determined by differential leveling and
 HU0530.adjusted by the NATIONAL GEODETIC SURVEY
 HU0530.in June 1991.
 HU0530
 HU0530.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0530.GEOID18 height accuracy estimate available here.
 HU0530
 HU0530.This Tidal Bench Mark is designated as VM 15535
 HU0530.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0530
 HU0530.Click photographs - Photos may exist for this station.
 HU0530
 HU0530.The dynamic height is computed by dividing the NAVD 88
 HU0530.geopotential number by the normal gravity value computed on the
 HU0530.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0530.degrees latitude (g = 980.6199 gals.).
 HU0530
 HU0530.The modeled gravity was interpolated from observed gravity values.
 HU0530
 HU0530;                    North         East    Units  Estimated Accuracy
 HU0530;SPC MD       -    78,478.      521,961.      MT  (+/- 10 meters HH2 GPS)
 HU0530
 HU0530_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4719746514(NAD 83)
 HU0530
 HU0530                          SUPERSEDED SURVEY CONTROL
 HU0530
 HU0530  NGVD 29 (06/12/91)    1.712  (m)            5.62   (f) ADJUSTED    1 1
 HU0530  NGVD 29 (??/??/87)    1.727  (m)            5.67   (f) SUPERSEDED  1 1
 HU0530
 HU0530.Superseded values are not recommended for survey control.
 HU0530
 HU0530.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0530.See file dsdata.pdf to determine how the superseded data were derived.
 HU0530
 HU0530_MARKER: DB = BENCH MARK DISK
 HU0530_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HU0530_SP_SET: FOUNDATION WALL
 HU0530_STAMPING: NO 3 1931
 HU0530_MARK LOGO: CGS
 HU0530_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0530+STABILITY: SURFACE MOTION
 HU0530_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0530+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2017
 HU0530
 HU0530  HISTORY     - Date     Condition        Report By
 HU0530  HISTORY     - 1931     MONUMENTED       CGS
 HU0530  HISTORY     - 1971     GOOD             NGS
 HU0530  HISTORY     - 19891207 GOOD             NGS
 HU0530  HISTORY     - 20011117 GOOD             USPSQD
 HU0530  HISTORY     - 20050907 GOOD             GEOCAC
 HU0530  HISTORY     - 20170330 GOOD             PROFLN
 HU0530
 HU0530                          STATION DESCRIPTION
 HU0530
 HU0530'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0530'AT SALISBURY.
 HU0530'AT SALISBURY, ALONG MAIN STREET, AT THE MAIN STREET DRAWBRIDGE
 HU0530'OVER THE NORTH PRONG OF THE WICOMICO RIVER, SET VERTICALLY IN THE
 HU0530'SOUTHEAST CORNER OF THE FOUNDATION OF THE BRIDGE TENDERS HOUSE.
 HU0530
 HU0530                          STATION RECOVERY (1989)
 HU0530
 HU0530'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU0530'IN SALISBURY, AT THE INTERSECTION OF MAIN AND SMALL STREETS, SET
 HU0530'VERTICALLY IN THE EAST FACE OF THE CONCRETE FOUNDATION OF THE BRIDGE
 HU0530'TENDERS HOUSE FOR THE MAIN STREET DRAW BRIDGE, 23.2 M (76.12 FT) EAST
 HU0530'OF THE EXTENDED CENTER OF SMALL STREET, 9.8 M (32.15 FT) SOUTH OF THE
 HU0530'CENTERLINE OF MAIN STREET, 0.4 M (1.31 FT) NORTH OF THE SOUTHEAST
 HU0530'CORNER OF THE HOUSE, 0.2 M (0.66 FT) ABOVE THE GROUND SURFACE, AND
 HU0530'LEVEL WITH THE STREET.
 HU0530
 HU0530                          STATION RECOVERY (2001)
 HU0530
 HU0530'RECOVERY NOTE BY US POWER SQUADRON 2001 (GVS)
 HU0530'RECOVERED AS DESCRIBED, EXCEPT IT IS LOCATED AT MAIN AND MILL STREETS,
 HU0530'AND NOT MAIN AND SMALL STREETS.
 HU0530
 HU0530                          STATION RECOVERY (2005)
 HU0530
 HU0530'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0530'THE STATION IS ON THE WEST BANK OF THE NORTH BRANCH OF THE WICOMICO
 HU0530'RIVER NEAR THE INTERSECTION OF MAIN STREET AND LAKE STREET, SET
 HU0530'VERTICALLY IN EAST FACE OF THE CONCRETE FOUNDATION OF THE DRAW
 HU0530'TENDER'S HOUSE FOR THE MAIN STREET DRAW BRIDGE, ABOUT 200 FEET EAST
 HU0530'OF THE CENTERLINE OF LAKE STREET, 32.15 FEET SOUTH OF THE CENTERLINE
 HU0530'OF MAIN STREET, 1.31 FEET NORTH OF THE SOUTHEAST CORNER OF THE HOUSE,
 HU0530'0.66 FEET ABOVE THE GROUND SURFACE, AND LEVEL WITH MAIN STREET.
 HU0530
 HU0530                          STATION RECOVERY (2017)
 HU0530
 HU0530'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU0530'RECOVERED PER 2005 RECOVERY NOTE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0529 ***********************************************************************
 HU0529  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0529  DESIGNATION -  857 1616 TIDAL 4
 HU0529  PID         -  HU0529
 HU0529  STATE/COUNTY-  MD/WICOMICO
 HU0529  COUNTRY     -  US
 HU0529  USGS QUAD   -  SALISBURY (2016)
 HU0529
 HU0529                         *CURRENT SURVEY CONTROL
 HU0529  ______________________________________________________________________
 HU0529* NAD 83(1986) POSITION- 38 21 55.5    (N) 075 36 01.6    (W)   HD_HELD2
 HU0529* NAVD 88 ORTHO HEIGHT -     5.497 (meters)       18.03  (feet) ADJUSTED
 HU0529  ______________________________________________________________________
 HU0529  GEOID HEIGHT    -        -35.818 (meters)                     GEOID18
 HU0529  DYNAMIC HEIGHT  -          5.494 (meters)       18.02  (feet) COMP
 HU0529  MODELED GRAVITY -    980,005.5   (mgal)                       NAVD 88
 HU0529
 HU0529  VERT ORDER      -  FIRST     CLASS I
 HU0529
 HU0529.The horizontal coordinates were established by autonomous hand held GPS
 HU0529.observations and have an estimated accuracy of +/- 10 meters.
 HU0529
 HU0529.The orthometric height was determined by differential leveling and
 HU0529.adjusted by the NATIONAL GEODETIC SURVEY
 HU0529.in June 1991.
 HU0529
 HU0529.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0529.GEOID18 height accuracy estimate available here.
 HU0529
 HU0529.This Tidal Bench Mark is designated as VM 15534
 HU0529.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0529
 HU0529.Click photographs - Photos may exist for this station.
 HU0529
 HU0529.The dynamic height is computed by dividing the NAVD 88
 HU0529.geopotential number by the normal gravity value computed on the
 HU0529.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0529.degrees latitude (g = 980.6199 gals.).
 HU0529
 HU0529.The modeled gravity was interpolated from observed gravity values.
 HU0529
 HU0529;                    North         East    Units  Estimated Accuracy
 HU0529;SPC MD       -    78,502.      522,308.      MT  (+/- 10 meters HH2 GPS)
 HU0529
 HU0529_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4754546530(NAD 83)
 HU0529
 HU0529                          SUPERSEDED SURVEY CONTROL
 HU0529
 HU0529  NGVD 29 (06/12/91)    5.752  (m)           18.87   (f) ADJUSTED    1 1
 HU0529  NGVD 29 (??/??/87)    5.740  (m)           18.83   (f) SUPERSEDED  1 1
 HU0529
 HU0529.Superseded values are not recommended for survey control.
 HU0529
 HU0529.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0529.See file dsdata.pdf to determine how the superseded data were derived.
 HU0529
 HU0529_MARKER: DB = BENCH MARK DISK
 HU0529_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 HU0529_SP_SET: FOUNDATION
 HU0529_STAMPING: NO 4 1931
 HU0529_MARK LOGO: CGS
 HU0529_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 HU0529+STABILITY: POSITION/ELEVATION WELL
 HU0529_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0529+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2017
 HU0529
 HU0529  HISTORY     - Date     Condition        Report By
 HU0529  HISTORY     - 1931     MONUMENTED       CGS
 HU0529  HISTORY     - 1971     GOOD             NGS
 HU0529  HISTORY     - 19891207 GOOD             NGS
 HU0529  HISTORY     - 20011117 GOOD             USPSQD
 HU0529  HISTORY     - 20050907 GOOD             GEOCAC
 HU0529  HISTORY     - 20170330 GOOD             PROFLN
 HU0529
 HU0529                          STATION DESCRIPTION
 HU0529
 HU0529'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0529'AT SALISBURY.
 HU0529'AT SALISBURY, AT THE INTERSECTION OF MAIN AND DIVISION STREET, AT
 HU0529'ONE PLAZA EAST OFFICE BLDG. (FORMERLY THE WICOMICO HOTEL), 52
 HU0529'FEET EAST OF THE CENTER LINE OF DIVISION STREET, 43.3 FEET WEST
 HU0529'OF THE NORTHEAST CORNER OF THE BUILDING, 13 FEET SOUTH OF THE
 HU0529'SOUTH CURB OF MAIN STREET, SET VERTICALLY IN THE NORTH FACE OF THE
 HU0529'GRANITE FOUNDATION OF THE BUILDING AND 1 1/2 FEET ABOVE THE LEVEL
 HU0529'OF THE SIDEWALK.
 HU0529
 HU0529                          STATION RECOVERY (1989)
 HU0529
 HU0529'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU0529'IN SALISBURY, AT THE INTERSECTION OF MAIN AND DIVISION STREETS, SET
 HU0529'VERTICALY IN THE NORTH FACE OF THE ONE PLAZA EAST OFFICE BUILDING,
 HU0529'9.9 M (32.48 FT) EAST OF THE EAST CURB OF DIVISION STREET, 6.8 M
 HU0529'(22.31 FT) EAST OF THE NORTHWEST CORNER OF THE BUILDING, 4.0 M (13.12
 HU0529'FT) SOUTH OF THE SOUTH CURB OF THE MAIN STREET, AND 0.5 M (1.64 FT)
 HU0529'ABOVE THE LEVEL OF A SIDEWALK.
 HU0529
 HU0529                          STATION RECOVERY (2001)
 HU0529
 HU0529'RECOVERY NOTE BY US POWER SQUADRON 2001 (GVS)
 HU0529'RECOVERED AS DESCRIBED
 HU0529
 HU0529                          STATION RECOVERY (2005)
 HU0529
 HU0529'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0529'RECOVERED IN GOOD CONDITION.
 HU0529
 HU0529                          STATION RECOVERY (2017)
 HU0529
 HU0529'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU0529'RECOVERED PER 1989 RECOVERY NOTE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0526 ***********************************************************************
 HU0526  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0526  DESIGNATION -  857 1616 TIDAL 6
 HU0526  PID         -  HU0526
 HU0526  STATE/COUNTY-  MD/WICOMICO
 HU0526  COUNTRY     -  US
 HU0526  USGS QUAD   -  SALISBURY (2016)
 HU0526
 HU0526                         *CURRENT SURVEY CONTROL
 HU0526  ______________________________________________________________________
 HU0526* NAD 83(1986) POSITION- 38 21 56.58   (N) 075 35 55.38   (W)   HD_HELD1
 HU0526* NAVD 88 ORTHO HEIGHT -     2.029 (meters)        6.66  (feet) ADJUSTED
 HU0526  ______________________________________________________________________
 HU0526  GEOID HEIGHT    -        -35.819 (meters)                     GEOID18
 HU0526  DYNAMIC HEIGHT  -          2.028 (meters)        6.65  (feet) COMP
 HU0526  MODELED GRAVITY -    980,005.5   (mgal)                       NAVD 88
 HU0526
 HU0526  VERT ORDER      -  FIRST     CLASS I
 HU0526
 HU0526.The horizontal coordinates were determined by differentially corrected
 HU0526.hand held GPS observations or other comparable positioning techniques
 HU0526.and have an estimated accuracy of +/- 3 meters.
 HU0526
 HU0526.The orthometric height was determined by differential leveling and
 HU0526.adjusted by the NATIONAL GEODETIC SURVEY
 HU0526.in June 1991.
 HU0526
 HU0526.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0526.GEOID18 height accuracy estimate available here.
 HU0526
 HU0526.This Tidal Bench Mark is designated as VM 15537
 HU0526.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0526
 HU0526.Click photographs - Photos may exist for this station.
 HU0526
 HU0526.The dynamic height is computed by dividing the NAVD 88
 HU0526.geopotential number by the normal gravity value computed on the
 HU0526.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0526.degrees latitude (g = 980.6199 gals.).
 HU0526
 HU0526.The modeled gravity was interpolated from observed gravity values.
 HU0526
 HU0526;                    North         East    Units  Estimated Accuracy
 HU0526;SPC MD       -    78,537.4     522,458.3     MT  (+/- 3 meters HH1 GPS) 
 HU0526
 HU0526_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4769646562(NAD 83)
 HU0526
 HU0526                          SUPERSEDED SURVEY CONTROL
 HU0526
 HU0526  NGVD 29 (06/12/91)    2.284  (m)            7.49   (f) ADJUSTED    1 1
 HU0526  NGVD 29 (??/??/87)    2.284  (m)            7.49   (f) SUPERSEDED  1 1
 HU0526
 HU0526.Superseded values are not recommended for survey control.
 HU0526
 HU0526.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0526.See file dsdata.pdf to determine how the superseded data were derived.
 HU0526
 HU0526_MARKER: DB = BENCH MARK DISK
 HU0526_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU0526_SP_SET: RETAINING WALL
 HU0526_STAMPING: 6 1937
 HU0526_MARK LOGO: CGS
 HU0526_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0526+STABILITY: SURFACE MOTION
 HU0526_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0526+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2017
 HU0526
 HU0526  HISTORY     - Date     Condition        Report By
 HU0526  HISTORY     - 1937     MONUMENTED       CGS
 HU0526  HISTORY     - 1971     GOOD             NGS
 HU0526  HISTORY     - 1972     GOOD             NGS
 HU0526  HISTORY     - 19891207 GOOD             NGS
 HU0526  HISTORY     - 20011117 GOOD             USPSQD
 HU0526  HISTORY     - 20050907 GOOD             GEOCAC
 HU0526  HISTORY     - 20140301 GOOD             GEOCAC
 HU0526  HISTORY     - 20170330 GOOD             PROFLN
 HU0526
 HU0526                          STATION DESCRIPTION
 HU0526
 HU0526'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0526'AT SALISBURY.
 HU0526'AT SALISBURY, AT THE MAIN (SOUTH) ENTRANCE TO THE POST OFFICE, ALONG
 HU0526'MAIN STREET, BETWEEN SOUTH BAPTIST STREET AND COURT STREET, 17.7
 HU0526'FEET SOUTH OF THE SOUTH WALL OF THE BUILDING, SET IN THE TOP OF A
 HU0526'CONCRETE WALL ALONG THE EAST SIDE OF EAST GROUP OF STEPS LEADING
 HU0526'TO ENTRANCE AND 1.8 FEET ABOVE THE LEVEL OF THE SIDEWALK.
 HU0526
 HU0526                          STATION RECOVERY (1972)
 HU0526
 HU0526'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0526'RECOVERED IN GOOD CONDITION.
 HU0526
 HU0526                          STATION RECOVERY (1989)
 HU0526
 HU0526'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU0526'IN SALISBURY, AT THE MAIN STREET POST OFFICE, IN TOP OF AND 0.6 M
 HU0526'(1.97 FT) NORTH OF THE SOUTH END OF A RETAINING WALL AT THE EAST
 HU0526'ENTRANCE, 5.3 M (17.39 FT) SOUTH OF THE SOUTH FACE OF THE BUILDING,
 HU0526'AND 0.5 M (1.64 FT) ABOVE THE LEVEL OF A SIDEWALK.
 HU0526
 HU0526                          STATION RECOVERY (2001)
 HU0526
 HU0526'RECOVERY NOTE BY US POWER SQUADRON 2001 (GVS)
 HU0526'RECOVERED AS DESCRIBED
 HU0526
 HU0526                          STATION RECOVERY (2005)
 HU0526
 HU0526'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0526'THE BUILDING IS NOW NAMED THE MAUDE R. TOULSON FEDERAL BUILDING.
 HU0526
 HU0526                          STATION RECOVERY (2014)
 HU0526
 HU0526'RECOVERY NOTE BY GEOCACHING 2014 (PSC)
 HU0526'RECOVERED IN GOOD CONDITION.
 HU0526
 HU0526                          STATION RECOVERY (2017)
 HU0526
 HU0526'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU0526'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8204 ***********************************************************************
 DH8204  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8204  DESIGNATION -  857 1702 A TIDAL
 DH8204  PID         -  DH8204
 DH8204  STATE/COUNTY-  MD/DORCHESTER
 DH8204  COUNTRY     -  US
 DH8204  USGS QUAD   -  GOLDEN HILL (2016)
 DH8204
 DH8204                         *CURRENT SURVEY CONTROL
 DH8204  ______________________________________________________________________
 DH8204* NAD 83(2011) POSITION- 38 25 42.45658(N) 076 14 18.83519(W)   ADJUSTED
 DH8204* NAD 83(2011) ELLIP HT-   -33.831 (meters)        (06/27/12)   ADJUSTED
 DH8204* NAD 83(2011) EPOCH   -  2010.00
 DH8204* NAVD 88 ORTHO HEIGHT -     1.04  (meters)        3.4   (feet) GPS OBS
 DH8204  ______________________________________________________________________
 DH8204  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8204  GEOID HEIGHT    -        -34.831 (meters)                     GEOID03
 DH8204  GEOID HEIGHT    -        -34.867 (meters)                     GEOID18
 DH8204  NAD 83(2011) X  -  1,190,108.188 (meters)                     COMP
 DH8204  NAD 83(2011) Y  - -4,859,369.989 (meters)                     COMP
 DH8204  NAD 83(2011) Z  -  3,942,790.357 (meters)                     COMP
 DH8204  LAPLACE CORR    -         -6.58  (seconds)                    DEFLEC18
 DH8204
 DH8204  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8204  Standards:
 DH8204         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8204            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8204  -------------------------------------------------------------------
 DH8204  NETWORK    0.80   1.72           0.35   0.30   0.88      0.02406296
 DH8204  -------------------------------------------------------------------
 DH8204  Click here for local accuracies and other accuracy information.
 DH8204
 DH8204.The horizontal coordinates were established by GPS observations
 DH8204.and adjusted by the National Geodetic Survey in June 2012.
 DH8204
 DH8204.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8204.been affixed to the stable North American tectonic plate. See 
 DH8204.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8204
 DH8204.The horizontal coordinates are valid at the epoch date displayed above
 DH8204.which is a decimal equivalence of Year/Month/Day.
 DH8204
 DH8204.The orthometric height was determined by GPS observations and a
 DH8204.high-resolution geoid model using precise GPS observation and
 DH8204.processing techniques.
 DH8204
 DH8204.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8204.GEOID18 height accuracy estimate available here.
 DH8204
 DH8204.Click photographs - Photos may exist for this station.
 DH8204
 DH8204.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8204
 DH8204.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8204
 DH8204.The ellipsoidal height was determined by GPS observations
 DH8204.and is referenced to NAD 83.
 DH8204
 DH8204. The following values were computed from the NAD 83(2011) position.
 DH8204
 DH8204;                    North         East     Units Scale Factor Converg.
 DH8204;SPC MD       -    84,839.498   466,485.607   MT  0.99998014   +0 28 40.4
 DH8204;SPC MD       -   278,344.25  1,530,461.53   sFT  0.99998014   +0 28 40.4
 DH8204;UTM  18      - 4,254,081.632   391,891.063   MT  0.99974393   -0 46 11.6
 DH8204
 DH8204!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8204!SPC MD       -   1.00000531  x   0.99998014  =   0.99998545
 DH8204!UTM  18      -   1.00000531  x   0.99974393  =   0.99974924
 DH8204
 DH8204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9189154081(NAD 83)
 DH8204
 DH8204                          SUPERSEDED SURVEY CONTROL
 DH8204
 DH8204  NAD 83(2007)-  38 25 42.45680(N)    076 14 18.83606(W) AD(2002.00) B
 DH8204  ELLIP H (02/12/09)  -33.814  (m)                       GP(2002.00) 5 1
 DH8204  NAD 83(1991)-  38 25 42.45700(N)    076 14 18.83579(W) AD(       ) B
 DH8204  ELLIP H (02/28/06)  -33.806  (m)                       GP(       ) 5 1
 DH8204
 DH8204.Superseded values are not recommended for survey control.
 DH8204
 DH8204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8204.See file dsdata.pdf to determine how the superseded data were derived.
 DH8204
 DH8204_MARKER: I = METAL ROD
 DH8204_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DH8204_STAMPING: 1702 A 2005
 DH8204_MARK LOGO: NOS
 DH8204_PROJECTION: FLUSH
 DH8204_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH8204_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8204+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2007
 DH8204_ROD/PIPE-DEPTH: 57.3 meters
 DH8204_SLEEVE-DEPTH  : 0.6 meters
 DH8204
 DH8204  HISTORY     - Date     Condition        Report By
 DH8204  HISTORY     - 2005     MONUMENTED       NOS
 DH8204  HISTORY     - 20050920 GOOD             NGS
 DH8204  HISTORY     - 20070224 GOOD             USPSQD
 DH8204
 DH8204                          STATION DESCRIPTION
 DH8204
 DH8204'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (GS)
 DH8204'TO REACH FROM THE INTERSECTION OF MD-16 AND MD-341 FOLLOW MD-16 EAST,
 DH8204'13.3 MILES. TURN  LEFT ONTO SMITHVILLE ROAD AND FOLLOW THE ROAD 4.6
 DH8204'MILES (7.4 KM) TO THE BOAT RAMP. THE   BENCHMARK IS SOUTH OF THE RAMP
 DH8204'ALONG SMITHVILLE ROAD.
 DH8204'
 DH8204'THE BENCH MARK IS A FLANGE-ENCASED ROD LOCATED ON THE WEST SIDE OF
 DH8204'SMITHVILLE ROAD,  39.68 M (130.2 FT) WSW OF POLE 514059, 38.89 M
 DH8204'(127.6 FT) SW OF POWER POLE 684, 4.11 M (13.5 FT)  FROM THE CENTERLINE
 DH8204'OF THE ROAD, AND 0.70 M (2.3 FT) FROM AN ORANGE WITNESS POST. THE
 DH8204'DATUM POINT IS SET FLUSH WITH THE GROUND, BEING THE TOP OF A STAINLESS
 DH8204'STEEL ROD DRIVEN  57.4 M (188.3 FT) TO REFUSAL, WITH A SLEEVE
 DH8204'EXTENDING TO A DEPTH OF 0.6 M (2.0 FT) AND ENCASED  IN A 5-INCH PVC
 DH8204'PIPE WITH A 5-INCH NOS LOGO CAP AND CONCRETE KICKBLOCK.
 DH8204
 DH8204                          STATION RECOVERY (2007)
 DH8204
 DH8204'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 DH8204'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2609 ***********************************************************************
 DJ2609  DESIGNATION -  857 1752 TIDAL 1
 DJ2609  PID         -  DJ2609
 DJ2609  STATE/COUNTY-  MD/DORCHESTER
 DJ2609  COUNTRY     -  US
 DJ2609  USGS QUAD   -  TAYLORS ISLAND (2016)
 DJ2609
 DJ2609                         *CURRENT SURVEY CONTROL
 DJ2609  ______________________________________________________________________
 DJ2609* NAD 83(1986) POSITION- 38 28 32.46   (N) 076 17 09.03   (W)   HD_HELD1
 DJ2609* NAVD 88 ORTHO HEIGHT -     1.399 (meters)        4.59  (feet) ADJUSTED
 DJ2609  ______________________________________________________________________
 DJ2609  GEOID HEIGHT    -        -34.644 (meters)                     GEOID18
 DJ2609  DYNAMIC HEIGHT  -          1.398 (meters)        4.59  (feet) COMP
 DJ2609  MODELED GRAVITY -    980,031.0   (mgal)                       NAVD 88
 DJ2609
 DJ2609  VERT ORDER      -  SECOND    CLASS I
 DJ2609
 DJ2609.The horizontal coordinates were determined by differentially corrected
 DJ2609.hand held GPS observations or other comparable positioning techniques
 DJ2609.and have an estimated accuracy of +/- 3 meters.
 DJ2609
 DJ2609.The orthometric height was determined by differential leveling and
 DJ2609.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2609.in October 2007.
 DJ2609
 DJ2609.No vertical observational check was made to the station.
 DJ2609
 DJ2609.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2609.GEOID18 height accuracy estimate available here.
 DJ2609
 DJ2609.Click photographs - Photos may exist for this station.
 DJ2609
 DJ2609.The dynamic height is computed by dividing the NAVD 88
 DJ2609.geopotential number by the normal gravity value computed on the
 DJ2609.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2609.degrees latitude (g = 980.6199 gals.).
 DJ2609
 DJ2609.The modeled gravity was interpolated from observed gravity values.
 DJ2609
 DJ2609;                    North         East    Units  Estimated Accuracy
 DJ2609;SPC MD       -    90,047.9     462,316.7     MT  (+/- 3 meters HH1 GPS) 
 DJ2609
 DJ2609_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8783759378(NAD 83)
 DJ2609
 DJ2609                          SUPERSEDED SURVEY CONTROL
 DJ2609
 DJ2609.No superseded survey control is available for this station.
 DJ2609
 DJ2609_MARKER: DB = BENCH MARK DISK
 DJ2609_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DJ2609_SP_SET: SLAB
 DJ2609_STAMPING: NO 1 1972
 DJ2609_MARK LOGO: CGS
 DJ2609_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DJ2609_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DJ2609_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DJ2609+SATELLITE: SATELLITE OBSERVATIONS - December 07, 1999
 DJ2609
 DJ2609  HISTORY     - Date     Condition        Report By
 DJ2609  HISTORY     - 1972     MONUMENTED       NGS
 DJ2609  HISTORY     - 19991207 GOOD             MDSHA
 DJ2609
 DJ2609                          STATION DESCRIPTION
 DJ2609
 DJ2609'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DJ2609'THE MARK IS LOCATED ABOUT 5.9 MI (9.5 KM) NORTH-NORTHWEST OF GOLDEN
 DJ2609'HILL, 4.3 MI (6.92 KM) SOUTHWEST OF MADISON AND 0.9 MI (1.45 KM)
 DJ2609'EAST-NORTHEAST OF TAYLORS ISLAND AT THE TAYLORS ISLAND MARINA.
 DJ2609'
 DJ2609'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 16 AND 335 IN CHURCH
 DJ2609'CREEK, GO SOUTHWEST ALONG STATE HIGHWAY 16 FOR 8.77 MILES (14.11 KM)
 DJ2609'TO A DIRT ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTHWEST FOR 0.07 MI
 DJ2609'(0.11 KM) ON THE DIRT ROAD TO THE TAYLORS ISLAND MARINA.
 DJ2609'
 DJ2609'IT IS SET IN A DRILL HOLE IN A CONCRETE SLAB FOR THE STORE, 102.5 FEET
 DJ2609'(31.2 M) NORTH OF TIDAL 3, 7.6 FEET (2.3 M) SOUTH OF THE SOUTHWEST
 DJ2609'CORNER OF THE STORE, 60.7 FEET (18.5 M) EAST OF A YARD LIGHT POLE,
 DJ2609'71.5 FEET (21.8 M) NORTH OF A DRAINAGE INLET AND 0.8 FEET (24.4 CM)
 DJ2609'NORTHEAST OF THE SOUTHWEST CORNER OF THE CONCRETE SLAB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2610 ***********************************************************************
 DJ2610  DESIGNATION -  857 1752 TIDAL 2
 DJ2610  PID         -  DJ2610
 DJ2610  STATE/COUNTY-  MD/DORCHESTER
 DJ2610  COUNTRY     -  US
 DJ2610  USGS QUAD   -  TAYLORS ISLAND (2016)
 DJ2610
 DJ2610                         *CURRENT SURVEY CONTROL
 DJ2610  ______________________________________________________________________
 DJ2610* NAD 83(1986) POSITION- 38 28 32.2    (N) 076 17 09.5    (W)   HD_HELD2
 DJ2610* NAVD 88 ORTHO HEIGHT -     1.176 (meters)        3.86  (feet) ADJUSTED
 DJ2610  ______________________________________________________________________
 DJ2610  GEOID HEIGHT    -        -34.644 (meters)                     GEOID18
 DJ2610  DYNAMIC HEIGHT  -          1.176 (meters)        3.86  (feet) COMP
 DJ2610  MODELED GRAVITY -    980,031.0   (mgal)                       NAVD 88
 DJ2610
 DJ2610  VERT ORDER      -  SECOND    CLASS I
 DJ2610
 DJ2610.The horizontal coordinates were established by autonomous hand held GPS
 DJ2610.observations and have an estimated accuracy of +/- 10 meters.
 DJ2610
 DJ2610.The orthometric height was determined by differential leveling and
 DJ2610.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2610.in October 2007.
 DJ2610
 DJ2610.No vertical observational check was made to the station.
 DJ2610
 DJ2610.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2610.GEOID18 height accuracy estimate available here.
 DJ2610
 DJ2610.Click photographs - Photos may exist for this station.
 DJ2610
 DJ2610.The dynamic height is computed by dividing the NAVD 88
 DJ2610.geopotential number by the normal gravity value computed on the
 DJ2610.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2610.degrees latitude (g = 980.6199 gals.).
 DJ2610
 DJ2610.The modeled gravity was interpolated from observed gravity values.
 DJ2610
 DJ2610;                    North         East    Units  Estimated Accuracy
 DJ2610;SPC MD       -    90,040.      462,305.      MT  (+/- 10 meters HH2 GPS)
 DJ2610
 DJ2610_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8782659370(NAD 83)
 DJ2610
 DJ2610                          SUPERSEDED SURVEY CONTROL
 DJ2610
 DJ2610.No superseded survey control is available for this station.
 DJ2610
 DJ2610_MARKER: DB = BENCH MARK DISK
 DJ2610_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DJ2610_SP_SET: GAS PUMP ISLAND
 DJ2610_STAMPING: NO 2 1972
 DJ2610_MARK LOGO: CGS
 DJ2610_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DJ2610_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DJ2610_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ2610+SATELLITE: SATELLITE OBSERVATIONS - December 07, 1999
 DJ2610
 DJ2610  HISTORY     - Date     Condition        Report By
 DJ2610  HISTORY     - 1972     MONUMENTED       NGS
 DJ2610  HISTORY     - 19991207 GOOD             MDSHA
 DJ2610
 DJ2610                          STATION DESCRIPTION
 DJ2610
 DJ2610'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DJ2610'THE MARK IS LOCATED ABOUT 5.9 MI (9.5 KM) NORTH-NORTHWEST OF GOLDEN
 DJ2610'HILL, 4.3 MI (6.92 KM) SOUTHWEST OF MADISON AND 0.9 MI (1.45 KM)
 DJ2610'EAST-NORTHEAST OF TAYLORS ISLAND AT THE TAYLORS ISLAND MARINA.
 DJ2610'
 DJ2610'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 16 AND 335 IN CHURCH
 DJ2610'CREEK, GO SOUTHWEST ALONG STATE HIGHWAY 16 FOR 8.77 MILES (14.11 KM)
 DJ2610'TO A DIRT ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTHWEST FOR 0.08
 DJ2610'MILES (0.13 KM) ON THE DIRT ROAD TO THE TAYLORS ISLAND MARINA AND THE
 DJ2610'MARK ON THE LEFT.
 DJ2610'
 DJ2610'IT IS SET IN A DRILL HOLE IN A CONCRETE GAS PUMP ISLAND, 53.8 FEET
 DJ2610'(16.4 M) SOUTHWEST OF TIDAL 1, 26.8 FEET (8.2 M) SOUTHEAST OF A YARD
 DJ2610'LIGHT POLE, 58.4 FEET (17.8 M) SOUTHWEST OF THE SOUTHWEST CORNER OF A
 DJ2610'STORE, 63.3 FEET (19.3 M) NORTHWEST OF A DRAINAGE INLET AND 2.5 FEET
 DJ2610'(0.8 M) SOUTHEAST OF THE GAS PUMP CONTROLLER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2611 ***********************************************************************
 DJ2611  DESIGNATION -  857 1752 TIDAL 3
 DJ2611  PID         -  DJ2611
 DJ2611  STATE/COUNTY-  MD/DORCHESTER
 DJ2611  COUNTRY     -  US
 DJ2611  USGS QUAD   -  TAYLORS ISLAND (2016)
 DJ2611
 DJ2611                         *CURRENT SURVEY CONTROL
 DJ2611  ______________________________________________________________________
 DJ2611* NAD 83(1986) POSITION- 38 28 31.5    (N) 076 17 09.0    (W)   HD_HELD2
 DJ2611* NAVD 88 ORTHO HEIGHT -     1.004 (meters)        3.29  (feet) ADJUSTED
 DJ2611  ______________________________________________________________________
 DJ2611  GEOID HEIGHT    -        -34.645 (meters)                     GEOID18
 DJ2611  DYNAMIC HEIGHT  -          1.003 (meters)        3.29  (feet) COMP
 DJ2611  MODELED GRAVITY -    980,031.0   (mgal)                       NAVD 88
 DJ2611
 DJ2611  VERT ORDER      -  SECOND    CLASS I
 DJ2611
 DJ2611.The horizontal coordinates were established by autonomous hand held GPS
 DJ2611.observations and have an estimated accuracy of +/- 10 meters.
 DJ2611
 DJ2611.The orthometric height was determined by differential leveling and
 DJ2611.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2611.in October 2007.
 DJ2611
 DJ2611.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2611.GEOID18 height accuracy estimate available here.
 DJ2611
 DJ2611.Click photographs - Photos may exist for this station.
 DJ2611
 DJ2611.The dynamic height is computed by dividing the NAVD 88
 DJ2611.geopotential number by the normal gravity value computed on the
 DJ2611.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2611.degrees latitude (g = 980.6199 gals.).
 DJ2611
 DJ2611.The modeled gravity was interpolated from observed gravity values.
 DJ2611
 DJ2611;                    North         East    Units  Estimated Accuracy
 DJ2611;SPC MD       -    90,018.      462,318.      MT  (+/- 10 meters HH2 GPS)
 DJ2611
 DJ2611_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8783759348(NAD 83)
 DJ2611
 DJ2611                          SUPERSEDED SURVEY CONTROL
 DJ2611
 DJ2611.No superseded survey control is available for this station.
 DJ2611
 DJ2611_MARKER: DB = BENCH MARK DISK
 DJ2611_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DJ2611_SP_SET: SLAB
 DJ2611_STAMPING: NO 3 1972
 DJ2611_MARK LOGO: CGS
 DJ2611_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DJ2611_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DJ2611_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ2611+SATELLITE: SATELLITE OBSERVATIONS - December 07, 1999
 DJ2611
 DJ2611  HISTORY     - Date     Condition        Report By
 DJ2611  HISTORY     - 1972     MONUMENTED       NGS
 DJ2611  HISTORY     - 19991207 GOOD             MDSHA
 DJ2611
 DJ2611                          STATION DESCRIPTION
 DJ2611
 DJ2611'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DJ2611'THE MARK IS LOCATED ABOUT 5.9 MI (9.5 KM) NORTH-NORTHWEST OF GOLDEN
 DJ2611'HILL, 4.3 MI (6.92 KM) SOUTHWEST OF MADISON AND 0.9 MI (1.45 KM)
 DJ2611'EAST-NORTHEAST OF TAYLORS ISLAND AT THE TAYLORS ISLAND MARINA.
 DJ2611'
 DJ2611'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 16 AND 335 IN CHURCH
 DJ2611'CREEK, GO SOUTHWEST ALONG STATE HIGHWAY 16 FOR 8.77 MILES (14.11 KM)
 DJ2611'TO A DIRT ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTHWEST FOR 0.07 MI
 DJ2611'(0.11 KM) ON THE DIRT ROAD TO THE TAYLORS ISLAND MARINA AND THE MARK
 DJ2611'ON THE LEFT.
 DJ2611'
 DJ2611'IT IS SET IN A DRILL HOLE IN A CONCRETE SLAB OF THE BOAT LIFT RUNWAY,
 DJ2611'110.7 FEET (33.7 M) SOUTH OF THE SOUTHWEST CORNER OF A STORE, 145.2
 DJ2611'FEET (44.3 M) WEST OF A POWER POLE WITH A LIGHT, 274.0 FEET (83.5 M)
 DJ2611'NORTH OF THE CENTER LINE OF STATE HIGHWAY 16, 31.1 FEET (9.5 M) SOUTH
 DJ2611'OF A DRAINAGE INLET AND 1.7 FEET (0.5 M) WEST OF THE NORTHWEST CORNER
 DJ2611'OF THE SLAB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2612 ***********************************************************************
 DJ2612  DESIGNATION -  857 1752 TIDAL 4
 DJ2612  PID         -  DJ2612
 DJ2612  STATE/COUNTY-  MD/DORCHESTER
 DJ2612  COUNTRY     -  US
 DJ2612  USGS QUAD   -  TAYLORS ISLAND (2016)
 DJ2612
 DJ2612                         *CURRENT SURVEY CONTROL
 DJ2612  ______________________________________________________________________
 DJ2612* NAD 83(1986) POSITION- 38 28 32.50   (N) 076 17 11.68   (W)   HD_HELD1
 DJ2612* NAVD 88 ORTHO HEIGHT -     0.942 (meters)        3.09  (feet) ADJUSTED
 DJ2612  ______________________________________________________________________
 DJ2612  GEOID HEIGHT    -        -34.642 (meters)                     GEOID18
 DJ2612  DYNAMIC HEIGHT  -          0.942 (meters)        3.09  (feet) COMP
 DJ2612  MODELED GRAVITY -    980,031.0   (mgal)                       NAVD 88
 DJ2612
 DJ2612  VERT ORDER      -  SECOND    CLASS I
 DJ2612
 DJ2612.The horizontal coordinates were determined by differentially corrected
 DJ2612.hand held GPS observations or other comparable positioning techniques
 DJ2612.and have an estimated accuracy of +/- 3 meters.
 DJ2612
 DJ2612.The orthometric height was determined by differential leveling and
 DJ2612.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2612.in October 2007.
 DJ2612
 DJ2612.No vertical observational check was made to the station.
 DJ2612
 DJ2612.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2612.GEOID18 height accuracy estimate available here.
 DJ2612
 DJ2612.Click photographs - Photos may exist for this station.
 DJ2612
 DJ2612.The dynamic height is computed by dividing the NAVD 88
 DJ2612.geopotential number by the normal gravity value computed on the
 DJ2612.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2612.degrees latitude (g = 980.6199 gals.).
 DJ2612
 DJ2612.The modeled gravity was interpolated from observed gravity values.
 DJ2612
 DJ2612;                    North         East    Units  Estimated Accuracy
 DJ2612;SPC MD       -    90,048.6     462,252.5     MT  (+/- 3 meters HH1 GPS) 
 DJ2612
 DJ2612_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8777359380(NAD 83)
 DJ2612
 DJ2612                          SUPERSEDED SURVEY CONTROL
 DJ2612
 DJ2612.No superseded survey control is available for this station.
 DJ2612
 DJ2612_MARKER: DB = BENCH MARK DISK
 DJ2612_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 DJ2612_SP_SET: SIGN BASE
 DJ2612_STAMPING: NO 4 1972
 DJ2612_MARK LOGO: CGS
 DJ2612_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DJ2612_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ2612+STABILITY: SURFACE MOTION
 DJ2612_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ2612+SATELLITE: SATELLITE OBSERVATIONS - December 07, 1999
 DJ2612
 DJ2612  HISTORY     - Date     Condition        Report By
 DJ2612  HISTORY     - 1972     MONUMENTED       NGS
 DJ2612  HISTORY     - 19991207 GOOD             MDSHA
 DJ2612
 DJ2612                          STATION DESCRIPTION
 DJ2612
 DJ2612'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DJ2612'THE MARK IS LOCATED ABOUT 5.9 MI (9.5 KM) NORTH-NORTHWEST OF GOLDEN
 DJ2612'HILL, 4.4 MI (7.08 KM) SOUTHWEST OF MADISON AND 0.8 MI (1.29 KM)
 DJ2612'EAST-NORTHEAST OF TAYLORS ISLAND AT THE TAYLORS ISLAND MARINA.
 DJ2612'
 DJ2612'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 16 AND 335 IN CHURCH
 DJ2612'CREEK, GO SOUTHWEST ALONG STATE HIGHWAY 16 FOR 8.77 MILES (14.11 KM)
 DJ2612'TO A DIRT ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTHWEST FOR 0.10 MI
 DJ2612'(0.16 KM) ON THE DIRT ROAD TO THE TAYLORS ISLAND MARINA AND THE MARK
 DJ2612'ON THE LEFT.
 DJ2612'
 DJ2612'IT IS SET IN A DRILL HOLE OF A CONCRETE SIGN FOUNDATION, 173.8 FEET
 DJ2612'(53.0 M) WEST OF TIDAL 2, 153.4 FEET (46.8 M) WEST OF A YARD LIGHT
 DJ2612'POLE, 101.6 FEET (31.0 M) SOUTHWEST OF THE SOUTHWEST CORNER OF A
 DJ2612'RESTROOM, 19.0 FEET (5.8 M) EAST OF A BULKHEAD RUNNING NORTH TO SOUTH
 DJ2612'AND 12.5 FEET (3.8 M) NORTH OF A BULKHEAD RUNNING EAST TO WEST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8913 ***********************************************************************
 AJ8913  DESIGNATION -  857 1773 TIDAL 2
 AJ8913  PID         -  AJ8913
 AJ8913  STATE/COUNTY-  MD/DORCHESTER
 AJ8913  COUNTRY     -  US
 AJ8913  USGS QUAD   -  MARDELA SPRINGS (2016)
 AJ8913
 AJ8913                         *CURRENT SURVEY CONTROL
 AJ8913  ______________________________________________________________________
 AJ8913* NAD 83(1986) POSITION- 38 28 56.     (N) 075 49 33.     (W)   SCALED
 AJ8913* NAVD 88 ORTHO HEIGHT -     2.922 (meters)        9.59  (feet) ADJUSTED
 AJ8913  ______________________________________________________________________
 AJ8913  GEOID HEIGHT    -        -35.490 (meters)                     GEOID18
 AJ8913  DYNAMIC HEIGHT  -          2.920 (meters)        9.58  (feet) COMP
 AJ8913  MODELED GRAVITY -    980,015.4   (mgal)                       NAVD 88
 AJ8913
 AJ8913  VERT ORDER      -  SECOND    CLASS I
 AJ8913
 AJ8913.The horizontal coordinates were scaled from a map and have
 AJ8913.an estimated accuracy of +/- 6 seconds.
 AJ8913
 AJ8913.The orthometric height was determined by differential leveling and
 AJ8913.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8913.in May 2002.
 AJ8913
 AJ8913.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8913.GEOID18 height accuracy estimate available here.
 AJ8913
 AJ8913.Click photographs - Photos may exist for this station.
 AJ8913
 AJ8913.The dynamic height is computed by dividing the NAVD 88
 AJ8913.geopotential number by the normal gravity value computed on the
 AJ8913.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8913.degrees latitude (g = 980.6199 gals.).
 AJ8913
 AJ8913.The modeled gravity was interpolated from observed gravity values.
 AJ8913
 AJ8913;                    North         East    Units  Estimated Accuracy
 AJ8913;SPC MD       -    91,190.      502,450.      MT  (+/- 180 meters Scaled)
 AJ8913
 AJ8913_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH279596(NAD 83)
 AJ8913
 AJ8913                          SUPERSEDED SURVEY CONTROL
 AJ8913
 AJ8913.No superseded survey control is available for this station.
 AJ8913
 AJ8913_MARKER: DB = BENCH MARK DISK
 AJ8913_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8913_STAMPING: NO 2 1950
 AJ8913_MARK LOGO: CGS
 AJ8913_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8913_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8913+STABILITY: SURFACE MOTION
 AJ8913_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AJ8913+SATELLITE: SATELLITE OBSERVATIONS - August 09, 2013
 AJ8913
 AJ8913  HISTORY     - Date     Condition        Report By
 AJ8913  HISTORY     - 1950     MONUMENTED       CGS
 AJ8913  HISTORY     - 19910423 GOOD             MDSHA
 AJ8913  HISTORY     - 20130809 GOOD             ARCSHE
 AJ8913
 AJ8913                          STATION DESCRIPTION
 AJ8913
 AJ8913'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (RGP)
 AJ8913'THE MARK IS LOCATED IN VIENNA ON LAND OWNED BY THE OLD VIENNA UNITED
 AJ8913'METHODIST CHURCH. TO REACH FROMM THE POST OFFICE IN VIENNA, GO
 AJ8913'SOUTHWEST ON MARKET STREET FOR 0.05 MI (0.08 KM) TO AN INTERSECTION.
 AJ8913'TURN LEFT AND GO SOUTHEAST ON CHURCH STREET FOR 0.12 MI (0.19 KM) TO
 AJ8913'THE OLD CHURCH AND THE MARK ON THE RIGHT. THE MARK IS 189.0 FT (57.6
 AJ8913'M) SOUTHEAST OF THE CENTERLINE OF MIDDLE STREET, 68.8 FT (21.0 M)
 AJ8913'SOUTH OF POWERLINE POLE NUMBER 403, 22.0 FT (6.7 M) SOUTHWEST OF THE
 AJ8913'CENTERLINE OF CHURCH STREET, 4.5 FT (1.4 M) NORTHEAST OF THE NORTHEAST
 AJ8913'FACE OF THE CHURCH, 1.0 FT (0.3 M) SOUTHEAST OF THE SOUTHEAST SIDE OF
 AJ8913'THE CONCRETE BLOCK STEPS OF THE CHURCH, AND SET IN THE TOP OF A 1.0 FT
 AJ8913'(0.3 M) SQUARE CONCRETE POST PROJECTING 0.1 FT (0.0 M) .
 AJ8913
 AJ8913                          STATION RECOVERY (2013)
 AJ8913
 AJ8913'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 AJ8913'THE OLD METHODIST CHURCH HAS BEEN DEMOLISHED.  THE DISTANCES IN THE
 AJ8913'ORIGINAL DESCRIPTION CHECKED EACH OTHER WELL, BUT NO TRACE OF THE MARK
 AJ8913'WAS FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8914 ***********************************************************************
 AJ8914  DESIGNATION -  857 1773 TIDAL 3
 AJ8914  PID         -  AJ8914
 AJ8914  STATE/COUNTY-  MD/DORCHESTER
 AJ8914  COUNTRY     -  US
 AJ8914  USGS QUAD   -  MARDELA SPRINGS (2016)
 AJ8914
 AJ8914                         *CURRENT SURVEY CONTROL
 AJ8914  ______________________________________________________________________
 AJ8914* NAD 83(1986) POSITION- 38 28 59.1    (N) 075 49 38.2    (W)   HD_HELD2
 AJ8914* NAVD 88 ORTHO HEIGHT -     2.995 (meters)        9.83  (feet) ADJUSTED
 AJ8914  ______________________________________________________________________
 AJ8914  GEOID HEIGHT    -        -35.487 (meters)                     GEOID18
 AJ8914  DYNAMIC HEIGHT  -          2.993 (meters)        9.82  (feet) COMP
 AJ8914  MODELED GRAVITY -    980,015.4   (mgal)                       NAVD 88
 AJ8914
 AJ8914  VERT ORDER      -  SECOND    CLASS I
 AJ8914
 AJ8914.The horizontal coordinates were established by autonomous hand held GPS
 AJ8914.observations and have an estimated accuracy of +/- 10 meters.
 AJ8914
 AJ8914.The orthometric height was determined by differential leveling and
 AJ8914.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8914.in May 2002.
 AJ8914
 AJ8914.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8914.GEOID18 height accuracy estimate available here.
 AJ8914
 AJ8914.Click photographs - Photos may exist for this station.
 AJ8914
 AJ8914.The dynamic height is computed by dividing the NAVD 88
 AJ8914.geopotential number by the normal gravity value computed on the
 AJ8914.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8914.degrees latitude (g = 980.6199 gals.).
 AJ8914
 AJ8914.The modeled gravity was interpolated from observed gravity values.
 AJ8914
 AJ8914;                    North         East    Units  Estimated Accuracy
 AJ8914;SPC MD       -    91,283.      502,318.      MT  (+/- 10 meters HH2 GPS)
 AJ8914
 AJ8914_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2784559740(NAD 83)
 AJ8914
 AJ8914                          SUPERSEDED SURVEY CONTROL
 AJ8914
 AJ8914.No superseded survey control is available for this station.
 AJ8914
 AJ8914_MARKER: DB = BENCH MARK DISK
 AJ8914_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8914_STAMPING: NO 3 1950
 AJ8914_MARK LOGO: CGS
 AJ8914_PROJECTION: RECESSED
 AJ8914_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8914_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8914+STABILITY: SURFACE MOTION
 AJ8914_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AJ8914+SATELLITE: SATELLITE OBSERVATIONS - August 09, 2013
 AJ8914
 AJ8914  HISTORY     - Date     Condition        Report By
 AJ8914  HISTORY     - 1950     MONUMENTED       CGS
 AJ8914  HISTORY     - 19910423 GOOD             MDSHA
 AJ8914  HISTORY     - 20130809 GOOD             ARCSHE
 AJ8914
 AJ8914                          STATION DESCRIPTION
 AJ8914
 AJ8914'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (RGP)
 AJ8914'THE MARK IS LOCATED IN VIENNA ON LAND OWNED BY VIENNA METHODIST
 AJ8914'CHURCH. TO REACH FROM THE POST OFFICE IN VIENNA, GO SOUTHWEST ON
 AJ8914'MARKET STREET FOR 0.05 MI (0.08 KM) TO AN INTERSECTION.  TURN LEFT AND
 AJ8914'GO SOUTHEAST ON CHURCH STREET FOR 0.02 MI (0.03 KM) TO A CHURCH AND
 AJ8914'THE MARK ON THE RIGHT. IT IS 135.3 FT (41.2 M) SOUTHEAST OF THE
 AJ8914'CENTERLINE OF MARKET STREET, 44.6 FT (13.6 M) SOUTHWEST OF POWERLINE
 AJ8914'POLE NUMBER 40359-97479, 28.4 FT (8.7 M) SOUTHWEST OF THE CENTERLINE
 AJ8914'OF CHURCH STREET, 18.5 FT (5.6 M) NORTH OF THE NORTH CORNER OF THE
 AJ8914'CHURCH, AND SET IN THE TOP OF A 1.0 FT (0.3 M) SQUARE CONCRETE POST
 AJ8914'RECESSED 0.6 FT (0.2 M) .
 AJ8914
 AJ8914                          STATION RECOVERY (2013)
 AJ8914
 AJ8914'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 AJ8914'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2131 ***********************************************************************
 HU2131  DESIGNATION -  857 1858 TIDAL 1
 HU2131  PID         -  HU2131
 HU2131  STATE/COUNTY-  MD/WICOMICO
 HU2131  COUNTRY     -  US
 HU2131  USGS QUAD   -  SHARPTOWN (2016)
 HU2131
 HU2131                         *CURRENT SURVEY CONTROL
 HU2131  ______________________________________________________________________
 HU2131* NAD 83(1986) POSITION- 38 32 27.67   (N) 075 43 20.61   (W)   HD_HELD1
 HU2131* NAVD 88 ORTHO HEIGHT -     0.895 (meters)        2.94  (feet) ADJUSTED
 HU2131  ______________________________________________________________________
 HU2131  GEOID HEIGHT    -        -35.559 (meters)                     GEOID18
 HU2131  DYNAMIC HEIGHT  -          0.895 (meters)        2.94  (feet) COMP
 HU2131  MODELED GRAVITY -    980,012.6   (mgal)                       NAVD 88
 HU2131
 HU2131  VERT ORDER      -  SECOND    CLASS I
 HU2131
 HU2131.The horizontal coordinates were determined by differentially corrected
 HU2131.hand held GPS observations or other comparable positioning techniques
 HU2131.and have an estimated accuracy of +/- 3 meters.
 HU2131
 HU2131.The orthometric height was determined by differential leveling and
 HU2131.adjusted by the NATIONAL GEODETIC SURVEY
 HU2131.in June 1991.
 HU2131
 HU2131.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2131.GEOID18 height accuracy estimate available here.
 HU2131
 HU2131.Click photographs - Photos may exist for this station.
 HU2131
 HU2131.The dynamic height is computed by dividing the NAVD 88
 HU2131.geopotential number by the normal gravity value computed on the
 HU2131.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2131.degrees latitude (g = 980.6199 gals.).
 HU2131
 HU2131.The modeled gravity was interpolated from observed gravity values.
 HU2131
 HU2131;                    North         East    Units  Estimated Accuracy
 HU2131;SPC MD       -    97,836.0     511,378.7     MT  (+/- 3 meters HH1 GPS) 
 HU2131
 HU2131_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3704466092(NAD 83)
 HU2131
 HU2131                          SUPERSEDED SURVEY CONTROL
 HU2131
 HU2131  NGVD 29 (06/12/91)    1.142  (m)            3.75   (f) ADJUSTED    2 1
 HU2131
 HU2131.Superseded values are not recommended for survey control.
 HU2131
 HU2131.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2131.See file dsdata.pdf to determine how the superseded data were derived.
 HU2131
 HU2131_MARKER: DB = BENCH MARK DISK
 HU2131_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2131_STAMPING: NO 1 1950
 HU2131_MARK LOGO: CGS
 HU2131_PROJECTION: PROJECTING 5 CENTIMETERS
 HU2131_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2131_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2131+STABILITY: SURFACE MOTION
 HU2131_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2131+SATELLITE: SATELLITE OBSERVATIONS - March 06, 1990
 HU2131
 HU2131  HISTORY     - Date     Condition        Report By
 HU2131  HISTORY     - 1950     MONUMENTED       CGS
 HU2131  HISTORY     - 19900306 GOOD             NGS
 HU2131  HISTORY     - 20171115 GOOD             USGS
 HU2131
 HU2131                          STATION DESCRIPTION
 HU2131
 HU2131'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2131'0.2 KM (0.12 MI) SOUTHWESTERLY ALONG WATER STREET FROM THE JUNCTION
 HU2131'OF MAIN STREET IN SHARPTOWN, 53.0 M (173.88 FT) NORTHEAST OF THE
 HU2131'EXTENDED CENTER OF NANTICOKE STREET, 9.7 M (31.82 FT) NORTHWEST OF A
 HU2131'FIRE HYDRANT, 6.2 M (20.34 FT) NORTHWEST OF THE CENTER OF THE STREET,
 HU2131'1.7 M (5.58 FT) WEST OF UTILITY POLE NUMBER 43374 99563, LEVEL WITH
 HU2131'THE STREET, AND IN A CONCRETE MONUMENT THAT PROJECTS 0.05 M (0.16 FT)
 HU2131'ABOVE THE GROUND SURFACE.
 HU2131
 HU2131                          STATION RECOVERY (2017)
 HU2131
 HU2131'RECOVERY NOTE BY US GEOLOGICAL SURVEY 2017 (AJT)
 HU2131'RECOVERED AS DESCRIBED-NOTE, MARK IS ABOUT 0.4 FT INSIDE CHAIN LINK
 HU2131'FENCE UNDER LANDSCAPING BOARD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0238 ***********************************************************************
 HV0238  TIDAL BM    -  This is a Tidal Bench Mark.
 HV0238  DESIGNATION -  857 1892 4
 HV0238  PID         -  HV0238
 HV0238  STATE/COUNTY-  MD/DORCHESTER
 HV0238  COUNTRY     -  US
 HV0238  USGS QUAD   -  CAMBRIDGE (2016)
 HV0238
 HV0238                         *CURRENT SURVEY CONTROL
 HV0238  ______________________________________________________________________
 HV0238* NAD 83(1986) POSITION- 38 34 31.32   (N) 076 04 19.52   (W)   HD_HELD1
 HV0238* NAVD 88 ORTHO HEIGHT -     1.195 (meters)        3.92  (feet) ADJUSTED
 HV0238  ______________________________________________________________________
 HV0238  GEOID HEIGHT    -        -35.031 (meters)                     GEOID18
 HV0238  DYNAMIC HEIGHT  -          1.194 (meters)        3.92  (feet) COMP
 HV0238  MODELED GRAVITY -    980,018.1   (mgal)                       NAVD 88
 HV0238
 HV0238  VERT ORDER      -  FIRST     CLASS II
 HV0238
 HV0238.The horizontal coordinates were determined by differentially corrected
 HV0238.hand held GPS observations or other comparable positioning techniques
 HV0238.and have an estimated accuracy of +/- 3 meters.
 HV0238
 HV0238.The orthometric height was determined by differential leveling and
 HV0238.adjusted by the NATIONAL GEODETIC SURVEY
 HV0238.in August 2010.
 HV0238
 HV0238.No vertical observational check was made to the station.
 HV0238
 HV0238.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0238.GEOID18 height accuracy estimate available here.
 HV0238
 HV0238.This Tidal Bench Mark is designated as VM 411
 HV0238.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0238
 HV0238.This Tidal Bench Mark is designated as VM 13428
 HV0238.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0238
 HV0238.Click photographs - Photos may exist for this station.
 HV0238
 HV0238.The dynamic height is computed by dividing the NAVD 88
 HV0238.geopotential number by the normal gravity value computed on the
 HV0238.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0238.degrees latitude (g = 980.6199 gals.).
 HV0238
 HV0238.The modeled gravity was interpolated from observed gravity values.
 HV0238
 HV0238;                    North         East    Units  Estimated Accuracy
 HV0238;SPC MD       -   101,280.2     480,855.5     MT  (+/- 3 meters HH1 GPS) 
 HV0238
 HV0238_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0661270201(NAD 83)
 HV0238
 HV0238                          SUPERSEDED SURVEY CONTROL
 HV0238
 HV0238  NAVD 88 (06/15/91)    1.220  (m)            4.00   (f) SUPERSEDED  1 2
 HV0238  NGVD 29 (11/26/84)    1.453  (m)            4.77   (f) ADJUSTED    1 2
 HV0238
 HV0238.Superseded values are not recommended for survey control.
 HV0238
 HV0238.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0238.See file dsdata.pdf to determine how the superseded data were derived.
 HV0238
 HV0238_STAMPING: NO 4 1942
 HV0238_MARK LOGO: CGS
 HV0238_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0238+SATELLITE: SATELLITE OBSERVATIONS - February 18, 2009
 HV0238
 HV0238  HISTORY     - Date     Condition        Report By
 HV0238  HISTORY     - 1942     MONUMENTED       CGS
 HV0238  HISTORY     - 1971     GOOD             NGS
 HV0238  HISTORY     - 19950419 GOOD             NOS
 HV0238  HISTORY     - 20010207 GOOD             USPSQD
 HV0238  HISTORY     - 20051107 GOOD             USPSQD
 HV0238  HISTORY     - 20061118 GOOD             USPSQD
 HV0238  HISTORY     - 20080722 GOOD             NGS
 HV0238  HISTORY     - 20090218 GOOD             CO-OPS
 HV0238  HISTORY     - 20180410 MARK NOT FOUND   MDDNR
 HV0238
 HV0238                          STATION DESCRIPTION
 HV0238
 HV0238'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0238'AT CAMBRIDGE.
 HV0238'AT CAMBRIDGE, ABOUT 0.3 MILE NORTHEAST ALONG HIGH STREET FROM
 HV0238'THE DORCHESTER COUNTY COURTHOUSE, AT LONG WHARF, SET IN THE TOP OF
 HV0238'THE WEST SIDE OF A 7-FOOT ROUND CONCRETE FOUNDATION FOR A FLAGPOLE,
 HV0238'ABOUT ON THE EXTENDED CENTER LINE OF HIGH STREET, 40.7 FEET
 HV0238'NORTHWEST OF THE NORTHWEST CURB OF THE DRIVE ON THE SOUTHEAST
 HV0238'SIDE OF THE CIRCLE DRIVE AT THE END OF HIGH STREET, 38.7 FEET
 HV0238'SOUTHEAST OF THE SOUTHEAST CURB OF THE DRIVE ON THE NORTHWEST
 HV0238'SIDE OF THE CIRCLE DRIVE, 26.4 FEET NORTHEAST OF THE NORTHEAST
 HV0238'EDGE OF A WALKWAY ON THE NORTHEAST SIDE OF A POOL OF WATER,
 HV0238'1 FOOT WEST OF THE FLAGPOLE, AND ABOUT 1 FOOT ABOVE THE LEVEL OF
 HV0238'THE DRIVE.
 HV0238
 HV0238                          STATION RECOVERY (1995)
 HV0238
 HV0238'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1995 (JRS)
 HV0238'THE BENCH MARK IS SET IN THE 7 FT (2.1 M) DIAMETER CONCRETE FLAGPOLE
 HV0238'BASE LOCATED IN THE CITY MARINE PARK AT THE NE END OF HIGH STREET IN
 HV0238'CAMBRIDGE, 12.4 M (40.7 FT) NW OF THE NW CURB ON THE SE SIDE OF THE
 HV0238'CIRCLE DRIVE AT THE END OF HIGH STREET, 11.8 M (38.7 FT) SE OF THE SE
 HV0238'CURB OF THE DRIVE ON THE NW SIDE OF THE CIRCLE DRIVE, 8.0 M (26.2 FT)
 HV0238'NE OF THE NE EDGE OF A WALKWAY ON THE NE SIDE OF A POOL OF WATER, 0.3
 HV0238'M (1.0 FT) WEST OF THE FLAGPOLE, AND ABOUT 0.3 M (1.0 FT) ABOVE THE
 HV0238'LEVEL OF THE DRIVE.
 HV0238
 HV0238                          STATION RECOVERY (2001)
 HV0238
 HV0238'RECOVERY NOTE BY US POWER SQUADRON 2001 (ELW)
 HV0238'RECOVERED IN GOOD CONDITION.
 HV0238
 HV0238                          STATION RECOVERY (2005)
 HV0238
 HV0238'RECOVERY NOTE BY US POWER SQUADRON 2005 (CPS)
 HV0238'RECOVERED IN GOOD CONDITION.
 HV0238
 HV0238                          STATION RECOVERY (2006)
 HV0238
 HV0238'RECOVERY NOTE BY US POWER SQUADRON 2006
 HV0238'RECOVERED IN GOOD CONDITION.
 HV0238
 HV0238                          STATION RECOVERY (2008)
 HV0238
 HV0238'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 HV0238'RECOVERED IN GOOD CONDITION.
 HV0238
 HV0238                          STATION RECOVERY (2009)
 HV0238
 HV0238'RECOVERY NOTE BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 HV0238'RECOVERED AS DESCRIBED.
 HV0238
 HV0238                          STATION RECOVERY (2018)
 HV0238
 HV0238'RECOVERY NOTE BY MD DEPT OF NAT RES 2018 (LCW)
 HV0238'THE AREA HAS BEEN LANDSCAPED AS A WWI MEMORIAL AND BASE OF FLAGPOLE
 HV0238'HAS BEEN COVERED WITH TIGHTLY LAID PAVERS THAT PREVENT ACCESS TO MARK.
 HV0238'DISC MAY REMAIN BUT PERMISSION TO REMOVE PAVERS WOULD HAVE TO BE
 HV0238'GAINED FROM CITY OF CAMBRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC6857 ***********************************************************************
 AC6857  TIDAL BM    -  This is a Tidal Bench Mark.
 AC6857  DESIGNATION -  857 1892 A
 AC6857  PID         -  AC6857
 AC6857  STATE/COUNTY-  MD/DORCHESTER
 AC6857  COUNTRY     -  US
 AC6857  USGS QUAD   -  CAMBRIDGE (2016)
 AC6857
 AC6857                         *CURRENT SURVEY CONTROL
 AC6857  ______________________________________________________________________
 AC6857* NAD 83(1986) POSITION- 38 34 13.2    (N) 076 04 14.4    (W)   HD_HELD2
 AC6857* NAVD 88 ORTHO HEIGHT -     3.849 (meters)       12.63  (feet) ADJUSTED
 AC6857  ______________________________________________________________________
 AC6857  GEOID HEIGHT    -        -35.043 (meters)                     GEOID18
 AC6857  DYNAMIC HEIGHT  -          3.847 (meters)       12.62  (feet) COMP
 AC6857  MODELED GRAVITY -    980,017.6   (mgal)                       NAVD 88
 AC6857
 AC6857  VERT ORDER      -  FIRST     CLASS II
 AC6857
 AC6857.The horizontal coordinates were established by autonomous hand held GPS
 AC6857.observations and have an estimated accuracy of +/- 10 meters.
 AC6857
 AC6857.The orthometric height was determined by differential leveling and
 AC6857.adjusted by the NATIONAL GEODETIC SURVEY
 AC6857.in August 2010.
 AC6857
 AC6857.No vertical observational check was made to the station.
 AC6857
 AC6857.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC6857.GEOID18 height accuracy estimate available here.
 AC6857
 AC6857.This Tidal Bench Mark is designated as VM 412
 AC6857.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC6857
 AC6857.This Tidal Bench Mark is designated as VM 13429
 AC6857.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC6857
 AC6857.Click photographs - Photos may exist for this station.
 AC6857
 AC6857.The dynamic height is computed by dividing the NAVD 88
 AC6857.geopotential number by the normal gravity value computed on the
 AC6857.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC6857.degrees latitude (g = 980.6199 gals.).
 AC6857
 AC6857.The modeled gravity was interpolated from observed gravity values.
 AC6857
 AC6857;                    North         East    Units  Estimated Accuracy
 AC6857;SPC MD       -   100,723.      480,985.      MT  (+/- 10 meters HH2 GPS)
 AC6857
 AC6857_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0672969641(NAD 83)
 AC6857
 AC6857                          SUPERSEDED SURVEY CONTROL
 AC6857
 AC6857.No superseded survey control is available for this station.
 AC6857
 AC6857_MARKER: DJ = TIDAL STATION DISK
 AC6857_SETTING: 48 = GALVANIZED STEEL ROD W/O SLEEVE (1O FT.+)
 AC6857_STAMPING: 1892 A 1980
 AC6857_MARK LOGO: NOS
 AC6857_PROJECTION: FLUSH
 AC6857_MAGNETIC: I = MARKER IS A STEEL ROD
 AC6857_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AC6857_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC6857+SATELLITE: SATELLITE OBSERVATIONS - March 07, 2007
 AC6857
 AC6857  HISTORY     - Date     Condition        Report By
 AC6857  HISTORY     - 1980     MONUMENTED       NOS
 AC6857  HISTORY     - 19950419 GOOD             NOS
 AC6857  HISTORY     - 20070307 GOOD             USPSQD
 AC6857  HISTORY     - 20090218 GOOD             CO-OPS
 AC6857
 AC6857                          STATION DESCRIPTION
 AC6857
 AC6857'DESCRIBED BY NATIONAL OCEAN SERVICE 1995 (JRS)
 AC6857'THE BENCH MARK IS SET AT THE INTERSECTION OF MARYLAND AVE AND HAYWARD
 AC6857'STREET, 9.2 M (30.2 FT) NW OF THE CENTERLINE OF HAYWARD STREET, 7.8 M
 AC6857'(25.6 FT) NE OF THE CENTERLINE OF MARYLAND AVE, AND 0.5 M (1.6 FT)
 AC6857'NORTH OF POWER POLE 1D.  THE BENCH MARK IS CRIMPED TO THE TOP OF A
 AC6857'STAINLESS STEEL ROD DRIVEN AN UNSPECIFIED DEPTH TO REFUSAL, AND
 AC6857'ENCASED BY A 4-INCH PVC PIPE AND CONCRETE KICKBLOCK.
 AC6857
 AC6857                          STATION RECOVERY (2007)
 AC6857
 AC6857'RECOVERY NOTE BY US POWER SQUADRON 2007 (NH)
 AC6857'MARK IS ON THE NORTHWEST CORNER OF MARYLAND AND MUSEUM STREETS.
 AC6857'N383412, W0760415, NEAR TELEPHONE POLE
 AC6857
 AC6857                          STATION RECOVERY (2009)
 AC6857
 AC6857'RECOVERY NOTE BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 AC6857'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC6856 ***********************************************************************
 AC6856  TIDAL BM    -  This is a Tidal Bench Mark.
 AC6856  DESIGNATION -  857 1892 B
 AC6856  PID         -  AC6856
 AC6856  STATE/COUNTY-  MD/DORCHESTER
 AC6856  COUNTRY     -  US
 AC6856  USGS QUAD   -  CAMBRIDGE (2016)
 AC6856
 AC6856                         *CURRENT SURVEY CONTROL
 AC6856  ______________________________________________________________________
 AC6856* NAD 83(1986) POSITION- 38 34 17.07   (N) 076 04 12.03   (W)   HD_HELD1
 AC6856* NAVD 88 ORTHO HEIGHT -     4.190 (meters)       13.75  (feet) ADJUSTED
 AC6856  ______________________________________________________________________
 AC6856  GEOID HEIGHT    -        -35.042 (meters)                     GEOID18
 AC6856  DYNAMIC HEIGHT  -          4.188 (meters)       13.74  (feet) COMP
 AC6856  MODELED GRAVITY -    980,017.7   (mgal)                       NAVD 88
 AC6856
 AC6856  VERT ORDER      -  FIRST     CLASS II
 AC6856
 AC6856.The horizontal coordinates were determined by differentially corrected
 AC6856.hand held GPS observations or other comparable positioning techniques
 AC6856.and have an estimated accuracy of +/- 3 meters.
 AC6856
 AC6856.The orthometric height was determined by differential leveling and
 AC6856.adjusted by the NATIONAL GEODETIC SURVEY
 AC6856.in August 2010.
 AC6856
 AC6856.No vertical observational check was made to the station.
 AC6856
 AC6856.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC6856.GEOID18 height accuracy estimate available here.
 AC6856
 AC6856.This Tidal Bench Mark is designated as VM 413
 AC6856.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC6856
 AC6856.This Tidal Bench Mark is designated as VM 13430
 AC6856.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC6856
 AC6856.Click photographs - Photos may exist for this station.
 AC6856
 AC6856.The dynamic height is computed by dividing the NAVD 88
 AC6856.geopotential number by the normal gravity value computed on the
 AC6856.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC6856.degrees latitude (g = 980.6199 gals.).
 AC6856
 AC6856.The modeled gravity was interpolated from observed gravity values.
 AC6856
 AC6856;                    North         East    Units  Estimated Accuracy
 AC6856;SPC MD       -   100,842.7     481,041.3     MT  (+/- 3 meters HH1 GPS) 
 AC6856
 AC6856_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0678869759(NAD 83)
 AC6856
 AC6856                          SUPERSEDED SURVEY CONTROL
 AC6856
 AC6856.No superseded survey control is available for this station.
 AC6856
 AC6856_MARKER: DJ = TIDAL STATION DISK
 AC6856_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 AC6856_STAMPING: 1892 B 1980
 AC6856_MARK LOGO: NOS
 AC6856_PROJECTION: RECESSED 10 CENTIMETERS
 AC6856_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC6856_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AC6856
 AC6856  HISTORY     - Date     Condition        Report By
 AC6856  HISTORY     - 1980     MONUMENTED       NOS
 AC6856  HISTORY     - 19950419 GOOD             NOS
 AC6856  HISTORY     - 20090218 GOOD             CO-OPS
 AC6856  HISTORY     - 20150728 GOOD             RODCON
 AC6856
 AC6856                          STATION DESCRIPTION
 AC6856
 AC6856'DESCRIBED BY NATIONAL OCEAN SERVICE 1995 (JRS)
 AC6856'THE BENCH MARK IS SET AT THE INTERSECTION OF BYRN AND HAYWARD STREETS,
 AC6856'16.0 M (52.5 FT) SW OF THE EASTERLY GATE POST TO THE MARINE TERMINAL,
 AC6856'14.2 M (46.6 FT) NE OF THE CENTERLINE OF BYRN STREET, 6.6 M (21.7 FT)
 AC6856'SE OF THE CENTERLINE OF HAYWARD STREET, 1.3 M (4.3 FT) NW OF THE NW
 AC6856'FACE OF THE CHAINLINK FENCE, AND 0.4 M (1.3 FT) NW OF POWER POLE T4.
 AC6856'THE MARK IS CRIMPED TO A STAINLESS STEEL ROD DRIVEN AN UNSPECIFIED
 AC6856'DEPTH TO REFUSAL, AND IS ENCASED IN A 4-INCH PVC PIPE AND CONCRETE
 AC6856'KICKBLOCK.
 AC6856
 AC6856                          STATION RECOVERY (2009)
 AC6856
 AC6856'RECOVERY NOTE BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 AC6856'RECOVERED AS DESCRIBED.
 AC6856
 AC6856                          STATION RECOVERY (2015)
 AC6856
 AC6856'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 AC6856'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC6855 ***********************************************************************
 AC6855  TIDAL BM    -  This is a Tidal Bench Mark.
 AC6855  DESIGNATION -  857 1892 C
 AC6855  PID         -  AC6855
 AC6855  STATE/COUNTY-  MD/DORCHESTER
 AC6855  COUNTRY     -  US
 AC6855  USGS QUAD   -  CAMBRIDGE (2016)
 AC6855
 AC6855                         *CURRENT SURVEY CONTROL
 AC6855  ______________________________________________________________________
 AC6855* NAD 83(1986) POSITION- 38 34 18.46   (N) 076 04 11.30   (W)   HD_HELD1
 AC6855* NAVD 88 ORTHO HEIGHT -     3.577 (meters)       11.74  (feet) ADJUSTED
 AC6855  ______________________________________________________________________
 AC6855  GEOID HEIGHT    -        -35.042 (meters)                     GEOID18
 AC6855  DYNAMIC HEIGHT  -          3.575 (meters)       11.73  (feet) COMP
 AC6855  MODELED GRAVITY -    980,017.7   (mgal)                       NAVD 88
 AC6855
 AC6855  VERT ORDER      -  FIRST     CLASS II
 AC6855
 AC6855.The horizontal coordinates were determined by differentially corrected
 AC6855.hand held GPS observations or other comparable positioning techniques
 AC6855.and have an estimated accuracy of +/- 3 meters.
 AC6855
 AC6855.The orthometric height was determined by differential leveling and
 AC6855.adjusted by the NATIONAL GEODETIC SURVEY
 AC6855.in August 2010.
 AC6855
 AC6855.No vertical observational check was made to the station.
 AC6855
 AC6855.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC6855.GEOID18 height accuracy estimate available here.
 AC6855
 AC6855.This Tidal Bench Mark is designated as VM 414
 AC6855.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC6855
 AC6855.This Tidal Bench Mark is designated as VM 13431
 AC6855.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC6855
 AC6855.Click photographs - Photos may exist for this station.
 AC6855
 AC6855.The dynamic height is computed by dividing the NAVD 88
 AC6855.geopotential number by the normal gravity value computed on the
 AC6855.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC6855.degrees latitude (g = 980.6199 gals.).
 AC6855
 AC6855.The modeled gravity was interpolated from observed gravity values.
 AC6855
 AC6855;                    North         East    Units  Estimated Accuracy
 AC6855;SPC MD       -   100,885.7     481,058.5     MT  (+/- 3 meters HH1 GPS) 
 AC6855
 AC6855_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0680669802(NAD 83)
 AC6855
 AC6855                          SUPERSEDED SURVEY CONTROL
 AC6855
 AC6855.No superseded survey control is available for this station.
 AC6855
 AC6855_MARKER: DJ = TIDAL STATION DISK
 AC6855_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 AC6855_STAMPING: 1892 C 1980
 AC6855_MARK LOGO: NOS
 AC6855_PROJECTION: RECESSED 5 CENTIMETERS
 AC6855_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC6855_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AC6855_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC6855+SATELLITE: SATELLITE OBSERVATIONS - June 19, 2014
 AC6855
 AC6855  HISTORY     - Date     Condition        Report By
 AC6855  HISTORY     - 1980     MONUMENTED       NOS
 AC6855  HISTORY     - 19950419 GOOD             NOS
 AC6855  HISTORY     - 20090218 GOOD             CO-OPS
 AC6855  HISTORY     - 20140619 GOOD             MDDNR
 AC6855  HISTORY     - 20150718 GOOD             RODCON
 AC6855
 AC6855                          STATION DESCRIPTION
 AC6855
 AC6855'DESCRIBED BY NATIONAL OCEAN SERVICE 1995 (JRS)
 AC6855'THE BENCH MARK IS SET ALONG THE EAST SIDE OF HAYWARD STREET IN THE
 AC6855'CAMBRIDGE MARINE TERMINAL GROUNDS, 30.5 M (100.1 FT) NE OF THE MOST
 AC6855'EASTERLY GATE POST TO THE MARINE TERMINAL, 23.1 M (75.8 FT) SOUTH OF
 AC6855'THE SW CORNER OF THE BRICK OFFICE BUILDING, 6.7 M (22.0 FT) SE OF THE
 AC6855'CENTERLINE OF THE ASPHALT ROAD, AND 0.4 M (1.3 FT) SE OF POWER POLE NO
 AC6855'1 AL.  THE BENCH MARK IS CRIMPED TO THE TOP OF A STAINLESS STEEL ROD
 AC6855'DRIVEN AN UNSPECIFIED DEPTH TO REFUSAL, AND ENCASED IN A 4-INCH PVC
 AC6855'PIPE AND KICKBLOCK.
 AC6855
 AC6855                          STATION RECOVERY (2009)
 AC6855
 AC6855'RECOVERY NOTE BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 AC6855'RECOVERED AS DESCRIBED.
 AC6855
 AC6855                          STATION RECOVERY (2014)
 AC6855
 AC6855'RECOVERY NOTE BY MD DEPT OF NAT RES 2014 (LCW)
 AC6855'STANDARD NOS DISC IN PVC PIPE 5 CM BELOW GROUND ON E/SIDE OF HAYWARD
 AC6855'
 AC6855'STREET.
 AC6855'0.39M 300 DEG MAG TO POLE 33459/00777/1AL WITH METAL WITNESS POST
 AC6855'SIGN, 43.65M 315 DEG MAG TO CENTER OF FIRE HYDRANT, 23.07M 346 DEG MAG
 AC6855'
 AC6855'TO S CORNER OF BRICK OFFICE BUILDING FOR SAILWINDS PARK, 34.07M 006
 AC6855'DEG MAG TO E CORNER OF BRICK BUILDING, 79.33M 130 DEG MAG TO W END OF
 AC6855'
 AC6855'LINK FENCE AT SW CORNER HOSPITAL PARKING LOT, 46.12M 215 DEG MAG TO
 AC6855'POLE 33453/00763/1, 27.73M 238 DEG MAG TO NE CORNER RECTANGULAR
 AC6855'CONCRETE PAD FOR MANHOLE.
 AC6855'
 AC6855
 AC6855                          STATION RECOVERY (2015)
 AC6855
 AC6855'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 AC6855'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC6854 ***********************************************************************
 AC6854  FBN         -  This is a Federal Base Network Control Station.
 AC6854  TIDAL BM    -  This is a Tidal Bench Mark.
 AC6854  DESIGNATION -  857 1892 D
 AC6854  PID         -  AC6854
 AC6854  STATE/COUNTY-  MD/DORCHESTER
 AC6854  COUNTRY     -  US
 AC6854  USGS QUAD   -  CAMBRIDGE (2016)
 AC6854
 AC6854                         *CURRENT SURVEY CONTROL
 AC6854  ______________________________________________________________________
 AC6854* NAD 83(2011) POSITION- 38 34 21.29019(N) 076 04 09.89280(W)   ADJUSTED
 AC6854* NAD 83(2011) ELLIP HT-   -32.770 (meters)        (06/27/12)   ADJUSTED
 AC6854* NAD 83(2011) EPOCH   -  2010.00
 AC6854* NAVD 88 ORTHO HEIGHT -     2.257 (meters)        7.40  (feet) ADJUSTED
 AC6854  ______________________________________________________________________
 AC6854  GEOID HEIGHT    -        -35.041 (meters)                     GEOID18
 AC6854  NAD 83(2011) X  -  1,202,051.550 (meters)                     COMP
 AC6854  NAD 83(2011) Y  - -4,846,169.871 (meters)                     COMP
 AC6854  NAD 83(2011) Z  -  3,955,311.203 (meters)                     COMP
 AC6854  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 AC6854  DYNAMIC HEIGHT  -          2.256 (meters)        7.40  (feet) COMP
 AC6854  MODELED GRAVITY -    980,017.8   (mgal)                       NAVD 88
 AC6854
 AC6854  VERT ORDER      -  FIRST     CLASS II
 AC6854
 AC6854  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC6854  Standards:
 AC6854         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC6854            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC6854  -------------------------------------------------------------------
 AC6854  NETWORK    0.54   1.10           0.24   0.20   0.56      0.06080971
 AC6854  -------------------------------------------------------------------
 AC6854  Click here for local accuracies and other accuracy information.
 AC6854
 AC6854.The horizontal coordinates were established by GPS observations
 AC6854.and adjusted by the National Geodetic Survey in June 2012.
 AC6854
 AC6854.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC6854.been affixed to the stable North American tectonic plate. See 
 AC6854.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC6854
 AC6854.The horizontal coordinates are valid at the epoch date displayed above
 AC6854.which is a decimal equivalence of Year/Month/Day.
 AC6854
 AC6854.The orthometric height was determined by differential leveling and
 AC6854.adjusted by the NATIONAL GEODETIC SURVEY
 AC6854.in August 2010.
 AC6854
 AC6854.No vertical observational check was made to the station.
 AC6854
 AC6854.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC6854.GEOID18 height accuracy estimate available here.
 AC6854
 AC6854.This Tidal Bench Mark is designated as VM 409
 AC6854.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC6854
 AC6854.This Tidal Bench Mark is designated as VM 13432
 AC6854.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC6854
 AC6854.Click photographs - Photos may exist for this station.
 AC6854
 AC6854.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC6854
 AC6854.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC6854
 AC6854.The ellipsoidal height was determined by GPS observations
 AC6854.and is referenced to NAD 83.
 AC6854
 AC6854.The dynamic height is computed by dividing the NAVD 88
 AC6854.geopotential number by the normal gravity value computed on the
 AC6854.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC6854.degrees latitude (g = 980.6199 gals.).
 AC6854
 AC6854.The modeled gravity was interpolated from observed gravity values.
 AC6854
 AC6854. The following values were computed from the NAD 83(2011) position.
 AC6854
 AC6854;                    North         East     Units Scale Factor Converg.
 AC6854;SPC MD       -   100,973.316   481,091.664   MT  0.99996377   +0 35 02.6
 AC6854;SPC MD       -   331,276.62  1,578,381.57   sFT  0.99996377   +0 35 02.6
 AC6854;UTM  18      - 4,269,889.239   406,841.750   MT  0.99970687   -0 40 00.6
 AC6854
 AC6854!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC6854!SPC MD       -   1.00000514  x   0.99996377  =   0.99996891
 AC6854!UTM  18      -   1.00000514  x   0.99970687  =   0.99971201
 AC6854
 AC6854_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0684169889(NAD 83)
 AC6854
 AC6854                          SUPERSEDED SURVEY CONTROL
 AC6854
 AC6854  NAD 83(2007)-  38 34 21.29078(N)    076 04 09.89402(W) AD(2002.00) 0
 AC6854  ELLIP H (02/10/07)  -32.763  (m)                       GP(2002.00)    
 AC6854  ELLIP H (02/28/06)  -32.722  (m)                       GP(       ) 5 1
 AC6854  NAD 83(1991)-  38 34 21.29029(N)    076 04 09.89409(W) AD(       ) A
 AC6854  ELLIP H (02/12/02)  -32.757  (m)                       GP(       ) 4 1
 AC6854  NAVD 88 (02/28/06)    2.30   (m)  GEOID03  model used  GPS OBS        
 AC6854  NAVD 88 (02/12/02)    2.2    (m)  GEOID99  model used  GPS OBS        
 AC6854
 AC6854.Superseded values are not recommended for survey control.
 AC6854
 AC6854.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC6854.See file dsdata.pdf to determine how the superseded data were derived.
 AC6854
 AC6854_MARKER: DJ = TIDAL STATION DISK
 AC6854_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 AC6854_STAMPING: 1892 D 1980
 AC6854_MARK LOGO: NOS
 AC6854_PROJECTION: RECESSED 5 CENTIMETERS
 AC6854_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC6854_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AC6854_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC6854+SATELLITE: SATELLITE OBSERVATIONS - February 18, 2009
 AC6854_ROD/PIPE-DEPTH: 11.0 meters
 AC6854
 AC6854  HISTORY     - Date     Condition        Report By
 AC6854  HISTORY     - 1980     MONUMENTED       NOS
 AC6854  HISTORY     - 19950419 GOOD             NOS
 AC6854  HISTORY     - 20000216 GOOD             NGS
 AC6854  HISTORY     - 20050704 GOOD             USPSQD
 AC6854  HISTORY     - 20050920 GOOD             NGS
 AC6854  HISTORY     - 20060920 GOOD             USPSQD
 AC6854  HISTORY     - 20080722 GOOD             NGS
 AC6854  HISTORY     - 20090218 GOOD             CO-OPS
 AC6854  HISTORY     - 20150728 GOOD             RODCON
 AC6854
 AC6854                          STATION DESCRIPTION
 AC6854
 AC6854'DESCRIBED BY NATIONAL OCEAN SERVICE 1995 (JRS)
 AC6854'THE BENCH MARK IS SET ALONG THE EAST SIDE OF HAYWARD STREET LOCATED IN
 AC6854'THE CAMBRIDGE MARINE TERMINAL GROUNDS, 31.5 M (103.3 FT) WEST OF THE
 AC6854'SOUTH CORNER OF CONVENTION CENTER, 29.0 M (95.1 FT) SOUTHEAST OF THE
 AC6854'BULKHEAD FACE, 26.5 M (86.9 FT) SOUTH OF THE SOUTHWEST OF THE
 AC6854'CONVENTION CENTER, 4.6 M (15.1 FT) WEST-NORTHWEST OF THE WEST CORNER
 AC6854'OF THE STORM DRAIN, AND 0.5 M (1.6 FT) SOUTHEAST OF A POWER POLE NO
 AC6854'33471-00805.  THE BENCH MARK IS CRIMPED TO A STAINLESS STEEL ROD
 AC6854'DRIVEN AN UNSPECIFIED DEPTH TO REFUSAL, AND ENCASED IN A 4-INCH PVC
 AC6854'PIPE AND CONCRETE KICKBLOCK.
 AC6854
 AC6854                          STATION RECOVERY (2000)
 AC6854
 AC6854'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 AC6854'THE STATION IS LOCATED IN THE NORTHEAST SECTION OF CAMBRIDGE ALONG THE
 AC6854'EAST SIDE OF THE NORTH END OF HAYWARD STREET ON THE PROPERTY OF
 AC6854'SAILWINDS PARK LOCATED ALONG THE NORTH BANK OF THE CHOPTANK RIVER,
 AC6854'ABOUT O.64 KM NORTHWEST OF THE SOUTH END OF THE US HIGHWAY 50 BRIDGE
 AC6854'OVER THE RIVER.  OWNERSHIP--CITY OF CAMBRIDGE.
 AC6854'
 AC6854'TO REACH THE STATION FROM THE JUNCTION OF US HIGHWAY 50 AND MARYLAND
 AC6854'AVENUE LOCATED ABOUT 0.32 KM (0.20 MI) SOUTH OF THE SOUTH END OF THE
 AC6854'US HIGHWAY 50 BRIDGE OVER THE CHOPTANK RIVER, GO NORTHWEST ON MARYLAND
 AC6854'AVENUE FOR 0.64 KM (0.40 MI) TO THE JUNCTION OF HAYWARD STREET ON THE
 AC6854'RIGHT, TURN RIGHT, NORTHEAST ON HAYWARD AVENUE FOR 0.24 KM (0.15 MI)
 AC6854'TO THE END OF HAYWARD STREET AND PARKING AREA AND STATION ON THE RIGHT
 AC6854'ON THE EAST SIDE OF A POWER POLE WITH THREE TRANSFORMERS.
 AC6854'
 AC6854'THE STATION IS AN NOS TIDAL DISK (PRIMARY BENCH MARK), CRIMPED TO THE
 AC6854'TOP OF A STAINLESS STEEL ROD ENCASED IN A 10-CM PVC PIPE SURROUNDED BY
 AC6854'CONCRETE ABOUT 5-CM BELOW THE GROUND, LOCATED 15.94 M (52.30 FT)
 AC6854'WEST-SOUTHWEST OF THE INCLINED CONCRETE ENTRANCE WALK TO GOVERNORS
 AC6854'HALL BUILDING, 4.75 M (15.58 FT) EAST-SOUTHEAST OF THE WEST CORNER
 AC6854'POST OF A WOOD FENCE, 4.66 M (15.29 FT) WEST-NORTHWEST OF THE WEST
 AC6854'CORNER OF A METAL STORM DRAIN, 0.61 M (2.00 FT) EAST OF A POWER POLE
 AC6854'(NUMBER 33471-00805) WITH THREE TRANSFORMERS AND A METAL WITNESS POST
 AC6854'SIGN ATTACHED, 0.45 M (1.48 FT) SOUTHEAST OF A CABLE JUNCTION BOX
 AC6854'(NUMBER 6) LOCATED ON THE NORTHEAST SIDE OF THE POWER POLE DESCRIBED
 AC6854'ABOVE.
 AC6854
 AC6854                          STATION RECOVERY (2005)
 AC6854
 AC6854'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 AC6854'AS DESCRIBED
 AC6854
 AC6854                          STATION RECOVERY (2005)
 AC6854
 AC6854'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (GS)
 AC6854'RECOVERED AS DESCRIBED.
 AC6854
 AC6854                          STATION RECOVERY (2006)
 AC6854
 AC6854'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 AC6854'RECOVERED IN GOOD CONDITION.
 AC6854
 AC6854                          STATION RECOVERY (2008)
 AC6854
 AC6854'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 AC6854'RECOVERED IN GOOD CONDITION.
 AC6854
 AC6854                          STATION RECOVERY (2009)
 AC6854
 AC6854'RECOVERY NOTE BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 AC6854'RECOVERED AS DESCRIBED.
 AC6854
 AC6854                          STATION RECOVERY (2015)
 AC6854
 AC6854'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 AC6854'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL8741 ***********************************************************************
 DL8741  TIDAL BM    -  This is a Tidal Bench Mark.
 DL8741  DESIGNATION -  857 1892 E
 DL8741  PID         -  DL8741
 DL8741  STATE/COUNTY-  MD/DORCHESTER
 DL8741  COUNTRY     -  US
 DL8741  USGS QUAD   -  CAMBRIDGE (2016)
 DL8741
 DL8741                         *CURRENT SURVEY CONTROL
 DL8741  ______________________________________________________________________
 DL8741* NAD 83(1986) POSITION- 38 34 24.7    (N) 076 04 07.6    (W)   HD_HELD2
 DL8741* NAVD 88 ORTHO HEIGHT -     2.330 (meters)        7.64  (feet) ADJUSTED
 DL8741  ______________________________________________________________________
 DL8741  GEOID HEIGHT    -        -35.041 (meters)                     GEOID18
 DL8741  DYNAMIC HEIGHT  -          2.329 (meters)        7.64  (feet) COMP
 DL8741  MODELED GRAVITY -    980,017.8   (mgal)                       NAVD 88
 DL8741
 DL8741  VERT ORDER      -  FIRST     CLASS II
 DL8741
 DL8741.The horizontal coordinates were established by autonomous hand held GPS
 DL8741.observations and have an estimated accuracy of +/- 10 meters.
 DL8741
 DL8741.The orthometric height was determined by differential leveling and
 DL8741.adjusted by the NATIONAL GEODETIC SURVEY
 DL8741.in August 2010.
 DL8741
 DL8741.No vertical observational check was made to the station.
 DL8741
 DL8741.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL8741.GEOID18 height accuracy estimate available here.
 DL8741
 DL8741.This Tidal Bench Mark is designated as VM 13433
 DL8741.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DL8741
 DL8741.Click photographs - Photos may exist for this station.
 DL8741
 DL8741.The dynamic height is computed by dividing the NAVD 88
 DL8741.geopotential number by the normal gravity value computed on the
 DL8741.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL8741.degrees latitude (g = 980.6199 gals.).
 DL8741
 DL8741.The modeled gravity was interpolated from observed gravity values.
 DL8741
 DL8741;                    North         East    Units  Estimated Accuracy
 DL8741;SPC MD       -   101,079.      481,146.      MT  (+/- 10 meters HH2 GPS)
 DL8741
 DL8741_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0689869993(NAD 83)
 DL8741
 DL8741                          SUPERSEDED SURVEY CONTROL
 DL8741
 DL8741.No superseded survey control is available for this station.
 DL8741
 DL8741_MARKER: DJ = TIDAL STATION DISK
 DL8741_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DL8741_SP_SET: SEAWALL
 DL8741_STAMPING: 1892 E 1980
 DL8741_MARK LOGO: NOS
 DL8741_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL8741_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL8741+STABILITY: SURFACE MOTION
 DL8741_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DL8741+SATELLITE: SATELLITE OBSERVATIONS - February 18, 2009
 DL8741
 DL8741  HISTORY     - Date     Condition        Report By
 DL8741  HISTORY     - 1980     MONUMENTED       NOS
 DL8741  HISTORY     - 20090218 GOOD             CO-OPS
 DL8741
 DL8741                          STATION DESCRIPTION
 DL8741
 DL8741'DESCRIBED BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 DL8741'THE MARK IS LOCATED ABOUT 8.7 KM (5.4 MI) NORTHWEST OF AIREY, 6.2 KM
 DL8741'(3.9 MI) WEST-NORTHWEST OF MOUNT HOLLY AND IN THE CITY OF CAMBRIDGE.
 DL8741'
 DL8741'TO REACH FROM THE US 50 AND MARYLAND AVENUE INTERSECTION, GO
 DL8741'WEST-NORTHWEST ON MARYLAND AVENUE FOR 0.58 KM (0.4 MI) TO AN
 DL8741'INTERSECTION.  TURN RIGHT AND GO NORTH-NORTHEAST ON HAYWARD STREET FOR
 DL8741'0.39 KM (0.2 MI) TO THE MARK ON THE RETAINING WALL AT THE END.
 DL8741'
 DL8741'IT IS 12.13 M (39.8 FT) EAST OF THE NORTHWEST END OF THE PIER, 11.98 M
 DL8741'(39.3 FT) WEST OF THE EAST END OF THE SEAWALL, 6.37 M (20.9 FT)
 DL8741'NORTHEAST OF A FIRE HYDRANT AND 0.61 M (2.0 FT) SOUTHWEST OF A CHAIN
 DL8741'LINK FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL8742 ***********************************************************************
 DL8742  TIDAL BM    -  This is a Tidal Bench Mark.
 DL8742  DESIGNATION -  857 1892 F
 DL8742  PID         -  DL8742
 DL8742  STATE/COUNTY-  MD/DORCHESTER
 DL8742  COUNTRY     -  US
 DL8742  USGS QUAD   -  CAMBRIDGE (2016)
 DL8742
 DL8742                         *CURRENT SURVEY CONTROL
 DL8742  ______________________________________________________________________
 DL8742* NAD 83(1986) POSITION- 38 34 22.5    (N) 076 04 07.3    (W)   HD_HELD2
 DL8742* NAVD 88 ORTHO HEIGHT -     3.571 (meters)       11.72  (feet) ADJUSTED
 DL8742  ______________________________________________________________________
 DL8742  GEOID HEIGHT    -        -35.042 (meters)                     GEOID18
 DL8742  DYNAMIC HEIGHT  -          3.569 (meters)       11.71  (feet) COMP
 DL8742  MODELED GRAVITY -    980,017.8   (mgal)                       NAVD 88
 DL8742
 DL8742  VERT ORDER      -  FIRST     CLASS II
 DL8742
 DL8742.The horizontal coordinates were established by autonomous hand held GPS
 DL8742.observations and have an estimated accuracy of +/- 10 meters.
 DL8742
 DL8742.The orthometric height was determined by differential leveling and
 DL8742.adjusted by the NATIONAL GEODETIC SURVEY
 DL8742.in August 2010.
 DL8742
 DL8742.No vertical observational check was made to the station.
 DL8742
 DL8742.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL8742.GEOID18 height accuracy estimate available here.
 DL8742
 DL8742.This Tidal Bench Mark is designated as VM 13434
 DL8742.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DL8742
 DL8742.Click photographs - Photos may exist for this station.
 DL8742
 DL8742.The dynamic height is computed by dividing the NAVD 88
 DL8742.geopotential number by the normal gravity value computed on the
 DL8742.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL8742.degrees latitude (g = 980.6199 gals.).
 DL8742
 DL8742.The modeled gravity was interpolated from observed gravity values.
 DL8742
 DL8742;                    North         East    Units  Estimated Accuracy
 DL8742;SPC MD       -   101,011.      481,154.      MT  (+/- 10 meters HH2 GPS)
 DL8742
 DL8742_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0690469925(NAD 83)
 DL8742
 DL8742                          SUPERSEDED SURVEY CONTROL
 DL8742
 DL8742.No superseded survey control is available for this station.
 DL8742
 DL8742_MARKER: DJ = TIDAL STATION DISK
 DL8742_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DL8742_SP_SET: LOADING DOCK
 DL8742_STAMPING: 1892 F 1980
 DL8742_MARK LOGO: NOS
 DL8742_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL8742_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DL8742_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DL8742+SATELLITE: SATELLITE OBSERVATIONS - February 18, 2009
 DL8742
 DL8742  HISTORY     - Date     Condition        Report By
 DL8742  HISTORY     - 1980     MONUMENTED       NOS
 DL8742  HISTORY     - 20090218 GOOD             CO-OPS
 DL8742
 DL8742                          STATION DESCRIPTION
 DL8742
 DL8742'DESCRIBED BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 DL8742'THE MARK IS LOCATED ABOUT 8.6 KM (5.3 MI) NORTHWEST OF AIREY, 6.2 KM
 DL8742'(3.9 MI) WEST-NORTHWEST OF MOUNT HOLLY AND IN THE CITY OF CAMBRIDGE.
 DL8742'TO REACH FROM THE JUNCTION OF US 50 AND MARYLAND AVENUE, GO
 DL8742'WEST-NORTHWEST ON MARYLAND AVENUE FOR 0.58 KM (0.4 MI) TO THE JUNCTION
 DL8742'OF HAYWARD STREET.  TURN RIGHT AND GO NORTH-NORTHEAST ON HAYWARD
 DL8742'STREET FOR 0.95 KM (0.6 MI) TO THE MARK ON THE RIGHT ON A CONCRETE
 DL8742'PLATFORM.
 DL8742'
 DL8742'IT IS 5.79 M (19.0 FT) NORTHWEST OF THREE CABLES FOR A CANVAS CANOPY,
 DL8742'4.21 M (13.8 FT) SOUTHEAST OF THE NORTHEAST CORNER OF THE HALL, 0.30 M
 DL8742'(1.0 FT) SOUTHWEST OF THE NORTHEAST CORNER OF A CONCRETE PLATFORM AND
 DL8742'1.13 M (3.7 FT) HIGHER THAN THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1146 ***********************************************************************
 HU1146  DESIGNATION -  857 1944 TIDAL 4
 HU1146  PID         -  HU1146
 HU1146  STATE/COUNTY-  MD/TALBOT
 HU1146  COUNTRY     -  US
 HU1146  USGS QUAD   -  FOWLING CREEK (2017)
 HU1146
 HU1146                         *CURRENT SURVEY CONTROL
 HU1146  ______________________________________________________________________
 HU1146* NAD 83(1986) POSITION- 38 45 28.1    (N) 075 59 52.6    (W)   HD_HELD2
 HU1146* NAVD 88 ORTHO HEIGHT -     3.022 (meters)        9.91  (feet) ADJUSTED
 HU1146  ______________________________________________________________________
 HU1146  GEOID HEIGHT    -        -34.831 (meters)                     GEOID18
 HU1146  DYNAMIC HEIGHT  -          3.020 (meters)        9.91  (feet) COMP
 HU1146  MODELED GRAVITY -    980,034.4   (mgal)                       NAVD 88
 HU1146
 HU1146  VERT ORDER      -  FIRST     CLASS I
 HU1146
 HU1146.The horizontal coordinates were established by autonomous hand held GPS
 HU1146.observations and have an estimated accuracy of +/- 10 meters.
 HU1146
 HU1146.The orthometric height was determined by differential leveling and
 HU1146.adjusted by the NATIONAL GEODETIC SURVEY
 HU1146.in June 1991.
 HU1146
 HU1146.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1146.GEOID18 height accuracy estimate available here.
 HU1146
 HU1146.Click photographs - Photos may exist for this station.
 HU1146
 HU1146.The dynamic height is computed by dividing the NAVD 88
 HU1146.geopotential number by the normal gravity value computed on the
 HU1146.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1146.degrees latitude (g = 980.6199 gals.).
 HU1146
 HU1146.The modeled gravity was interpolated from observed gravity values.
 HU1146
 HU1146;                    North         East    Units  Estimated Accuracy
 HU1146;SPC MD       -   121,599.      487,094.      MT  (+/- 10 meters HH2 GPS)
 HU1146
 HU1146_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1329190373(NAD 83)
 HU1146
 HU1146                          SUPERSEDED SURVEY CONTROL
 HU1146
 HU1146  NGVD 29 (11/26/84)    3.260  (m)           10.70   (f) ADJUSTED    1 1
 HU1146
 HU1146.Superseded values are not recommended for survey control.
 HU1146
 HU1146.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1146.See file dsdata.pdf to determine how the superseded data were derived.
 HU1146
 HU1146_MARKER: DB = BENCH MARK DISK
 HU1146_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU1146_SP_SET: BRIDGE ABUTMENT
 HU1146_STAMPING: 4 1969
 HU1146_MARK LOGO: CGS
 HU1146_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1146_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU1146_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU1146+SATELLITE: SATELLITE OBSERVATIONS - June 08, 2005
 HU1146
 HU1146  HISTORY     - Date     Condition        Report By
 HU1146  HISTORY     - 1969     MONUMENTED       CGS
 HU1146  HISTORY     - 1971     GOOD             NGS
 HU1146  HISTORY     - 19991025 GOOD             MDSHA
 HU1146  HISTORY     - 20020312 GOOD             USPSQD
 HU1146  HISTORY     - 20050608 GOOD             USPSQD
 HU1146
 HU1146                          STATION DESCRIPTION
 HU1146
 HU1146'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU1146'3.8 MI SE FROM EASTON.
 HU1146'ABOUT 3.8 MILES SOUTHEAST ALONG STATE HIGHWAY 331 FROM THE
 HU1146'INTERSECTION OF U.S. HIGHWAY 50 AT EASTON, SET ON THE TOP OF THE
 HU1146'NORTHEAST END OF THE NORTHWEST CONCRETE ABUTMENT OF THE HIGHWAY
 HU1146'BRIDGE OVER THE CHOPTANK RIVER, 16.4 FEET NORTHEAST OF THE CENTER
 HU1146'LINE OF THE HIGHWAY AND LEVEL WITH THE HIGHWAY.
 HU1146
 HU1146                          STATION RECOVERY (1999)
 HU1146
 HU1146'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HU1146'RECOVERED AS DESCRIBED.
 HU1146
 HU1146                          STATION RECOVERY (2002)
 HU1146
 HU1146'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HU1146'RECOVERED IN GOOD CONDITION.
 HU1146
 HU1146                          STATION RECOVERY (2005)
 HU1146
 HU1146'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 HU1146'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC9970 ***********************************************************************
 AC9970  TIDAL BM    -  This is a Tidal Bench Mark.
 AC9970  DESIGNATION -  857 1979 A TIDAL
 AC9970  PID         -  AC9970
 AC9970  STATE/COUNTY-  MD/TALBOT
 AC9970  COUNTRY     -  US
 AC9970  USGS QUAD   -  CLAIBORNE (2016)
 AC9970
 AC9970                         *CURRENT SURVEY CONTROL
 AC9970  ______________________________________________________________________
 AC9970* NAD 83(1986) POSITION- 38 45 56.22   (N) 076 19 40.91   (W)   HD_HELD1
 AC9970* NAVD 88 ORTHO HEIGHT -     0.936 (meters)        3.07  (feet) ADJUSTED
 AC9970  ______________________________________________________________________
 AC9970  GEOID HEIGHT    -        -34.092 (meters)                     GEOID18
 AC9970  DYNAMIC HEIGHT  -          0.935 (meters)        3.07  (feet) COMP
 AC9970  MODELED GRAVITY -    980,051.0   (mgal)                       NAVD 88
 AC9970
 AC9970  VERT ORDER      -  SECOND    CLASS I
 AC9970
 AC9970.The horizontal coordinates were determined by differentially corrected
 AC9970.hand held GPS observations or other comparable positioning techniques
 AC9970.and have an estimated accuracy of +/- 3 meters.
 AC9970
 AC9970.The orthometric height was determined by differential leveling and
 AC9970.adjusted by the NATIONAL GEODETIC SURVEY
 AC9970.in October 1997.
 AC9970
 AC9970.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC9970.GEOID18 height accuracy estimate available here.
 AC9970
 AC9970.This Tidal Bench Mark is designated as VM 3075
 AC9970.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC9970
 AC9970.Click photographs - Photos may exist for this station.
 AC9970
 AC9970.The dynamic height is computed by dividing the NAVD 88
 AC9970.geopotential number by the normal gravity value computed on the
 AC9970.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC9970.degrees latitude (g = 980.6199 gals.).
 AC9970
 AC9970.The modeled gravity was interpolated from observed gravity values.
 AC9970
 AC9970;                    North         East    Units  Estimated Accuracy
 AC9970;SPC MD       -   122,202.8     458,398.5     MT  (+/- 3 meters HH1 GPS) 
 AC9970
 AC9970_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8462291604(NAD 83)
 AC9970
 AC9970                          SUPERSEDED SURVEY CONTROL
 AC9970
 AC9970.No superseded survey control is available for this station.
 AC9970
 AC9970_MARKER: DJ = TIDAL STATION DISK
 AC9970_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 AC9970_SP_SET: CRAB STABLE FLOOR
 AC9970_STAMPING: 1979 A 1983
 AC9970_MARK LOGO: NOS
 AC9970_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AC9970_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC9970+STABILITY: SURFACE MOTION
 AC9970_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC9970+SATELLITE: SATELLITE OBSERVATIONS - June 12, 2014
 AC9970
 AC9970  HISTORY     - Date     Condition        Report By
 AC9970  HISTORY     - 1983     MONUMENTED       NOS
 AC9970  HISTORY     - 19950319 GOOD             MDSHA
 AC9970  HISTORY     - 20010302 GOOD             USPSQD
 AC9970  HISTORY     - 20080420 GOOD             NGS
 AC9970  HISTORY     - 20140612 GOOD             MDDNR
 AC9970
 AC9970                          STATION DESCRIPTION
 AC9970
 AC9970'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1995 (CAM)
 AC9970'THE BENCH MARK IS UNDER A WOODEN WALKWAY, SET FLUSH IN THE CONCRETE
 AC9970'FLOOR OF A CRAB SHEDDING STABLE, 117.7 FT (35.9 M) SOUTHEAST OF THE
 AC9970'SOUTHEAST CORNER OF THE MAIN OFFICE BUILDING OF THE CHESAPEAKE
 AC9970'SHELLFISH COMPANY, 58.9 FT (18.0 M) SOUTH SOUTHWEST OF THE NORTHWEST
 AC9970'CORNER POST OF THE SHEDDING STABLE, 51.4 FT (15.7 M) EAST OF THE VENT
 AC9970'PIPES FOR AN UNDERGROUND GASOLINE TANK, 51.4 FT (15.7 M) NORTH
 AC9970'NORTHEAST OF THE SOUTHWEST CORNER POST OF THE SHEDDING STABLE, AND 1.2
 AC9970'FT (0.4 M) WEST OF THE SOUTHWEST CORNER IN THE CENTER OF THE STABLE.
 AC9970
 AC9970                          STATION RECOVERY (2001)
 AC9970
 AC9970'RECOVERY NOTE BY US POWER SQUADRON 2001 (KGS)
 AC9970'THE SHELLFISH COMPANY IS NOW LOWES WHARF MARINA.
 AC9970
 AC9970                          STATION RECOVERY (2008)
 AC9970
 AC9970'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 AC9970'RECOVERED IN GOOD CONDITION.
 AC9970
 AC9970                          STATION RECOVERY (2014)
 AC9970
 AC9970'RECOVERY NOTE BY MD DEPT OF NAT RES 2014 (LCW)
 AC9970'STANDARD NOS DISC SET FLUSH IN WEST SIDE OF CONCRETE PAD FOR OFFICE
 AC9970'AND ARCADE AT LOWES WHARF MARINA.
 AC9970'0.59M 105 DEG MAG FROM WEST SIDE OF CONCRETE PAD, 35.87M 140 DEG MAG
 AC9970'FROM SE CORNER RESTAURANT BUILDING, 18.80M 196 DEG MAG FROM NW CORNER
 AC9970'OF CONCRETE SLAB, 0.28M W OF W FACE OF BUILDING, 4.08M 354 DEG MAG
 AC9970'FROM INTERSECTION OF PAD FOR BUILDING AND PAD FOR FUEL TANK, 17.0M 19
 AC9970'DEG MAG FROM BULKHEAD AT FUEL PUMPS, 7.70M 085 DEG MAG FROM NW CORNER
 AC9970'OF FUEL TANK FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC9969 ***********************************************************************
 AC9969  TIDAL BM    -  This is a Tidal Bench Mark.
 AC9969  DESIGNATION -  857 1979 C TIDAL
 AC9969  PID         -  AC9969
 AC9969  STATE/COUNTY-  MD/TALBOT
 AC9969  COUNTRY     -  US
 AC9969  USGS QUAD   -  CLAIBORNE (2016)
 AC9969
 AC9969                         *CURRENT SURVEY CONTROL
 AC9969  ______________________________________________________________________
 AC9969* NAD 83(1986) POSITION- 38 45 55.3    (N) 076 19 32.6    (W)   HD_HELD2
 AC9969* NAVD 88 ORTHO HEIGHT -     1.080 (meters)        3.54  (feet) ADJUSTED
 AC9969  ______________________________________________________________________
 AC9969  GEOID HEIGHT    -        -34.099 (meters)                     GEOID18
 AC9969  DYNAMIC HEIGHT  -          1.079 (meters)        3.54  (feet) COMP
 AC9969  MODELED GRAVITY -    980,051.1   (mgal)                       NAVD 88
 AC9969
 AC9969  VERT ORDER      -  SECOND    CLASS I
 AC9969
 AC9969.The horizontal coordinates were established by autonomous hand held GPS
 AC9969.observations and have an estimated accuracy of +/- 10 meters.
 AC9969
 AC9969.The orthometric height was determined by differential leveling and
 AC9969.adjusted by the NATIONAL GEODETIC SURVEY
 AC9969.in October 1997.
 AC9969
 AC9969.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC9969.GEOID18 height accuracy estimate available here.
 AC9969
 AC9969.This Tidal Bench Mark is designated as VM 3077
 AC9969.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC9969
 AC9969.Click photographs - Photos may exist for this station.
 AC9969
 AC9969.The dynamic height is computed by dividing the NAVD 88
 AC9969.geopotential number by the normal gravity value computed on the
 AC9969.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC9969.degrees latitude (g = 980.6199 gals.).
 AC9969
 AC9969.The modeled gravity was interpolated from observed gravity values.
 AC9969
 AC9969;                    North         East    Units  Estimated Accuracy
 AC9969;SPC MD       -   122,176.      458,599.      MT  (+/- 10 meters HH2 GPS)
 AC9969
 AC9969_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8482291573(NAD 83)
 AC9969
 AC9969                          SUPERSEDED SURVEY CONTROL
 AC9969
 AC9969.No superseded survey control is available for this station.
 AC9969
 AC9969_MARKER: DJ = TIDAL STATION DISK
 AC9969_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 AC9969_STAMPING: 1979 C 1983
 AC9969_MARK LOGO: NOS
 AC9969_PROJECTION: PROJECTING 1 CENTIMETERS
 AC9969_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC9969_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AC9969_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AC9969+SATELLITE: SATELLITE OBSERVATIONS - January 07, 2006
 AC9969_ROD/PIPE-DEPTH: 11 meters
 AC9969
 AC9969  HISTORY     - Date     Condition        Report By
 AC9969  HISTORY     - 1983     MONUMENTED       NOS
 AC9969  HISTORY     - 19950319 GOOD             MDSHA
 AC9969  HISTORY     - 20010302 MARK NOT FOUND   USPSQD
 AC9969  HISTORY     - 20060107 GOOD             USPSQD
 AC9969  HISTORY     - 20110220 GOOD             NGS
 AC9969
 AC9969                          STATION DESCRIPTION
 AC9969
 AC9969'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1995 (CAM)
 AC9969'THE BENCH MARK IS ON THE NORTHEAST SIDE OF LOWES WHARF ROAD JUST EAST
 AC9969'OF A BEND IN THE ROAD, 42.5 FT (13.0 M) EAST NORTHEAST OF THE CORNER
 AC9969'OF AN ABANDONED SHED ON THE SOUTHWEST SIDE OF THE ROAD, 19.3 FT (5.9
 AC9969'M) NORTHEAST OF THE CENTERLINE OF THE ROAD, 17.3 FT (5.3 M) NORTH
 AC9969'NORTHWEST OF UTILITY POLE NUMBER 294F, THE THIRD POLE ON THE NORTH
 AC9969'SIDE OF THE ROAD FROM THE SHELLFISH COMPANY, AND 0.3 FT (9.1 CM)
 AC9969'SOUTHWEST OF AN ORANGE WITNESS POST.  THE BENCH MARK IS CRIMPED TO A
 AC9969'STAINLESS STEEL ROD DRIVEN 36.0 FT (11.0 M) TO REFUSAL, ENCASED IN A
 AC9969'4.0 IN PVC PIPE WITH CAP AND CONCRETE KICKBLOCK, AND 0.3 FT (9.1 CM)
 AC9969'ABOVE GROUND LEVEL.
 AC9969
 AC9969                          STATION RECOVERY (2001)
 AC9969
 AC9969'RECOVERY NOTE BY US POWER SQUADRON 2001 (KGS)
 AC9969'MARK NOT FOUND.
 AC9969
 AC9969                          STATION RECOVERY (2006)
 AC9969
 AC9969'RECOVERY NOTE BY US POWER SQUADRON 2006 (GTO)
 AC9969'10.3FT SW OF CARSONITE WITNESS POST, 17.5FT NNW OF DP AND L POLE
 AC9969'26243-07915.
 AC9969
 AC9969                          STATION RECOVERY (2011)
 AC9969
 AC9969'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 AC9969'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC9968 ***********************************************************************
 AC9968  TIDAL BM    -  This is a Tidal Bench Mark.
 AC9968  DESIGNATION -  857 1979 D TIDAL
 AC9968  PID         -  AC9968
 AC9968  STATE/COUNTY-  MD/TALBOT
 AC9968  COUNTRY     -  US
 AC9968  USGS QUAD   -  CLAIBORNE (2016)
 AC9968
 AC9968                         *CURRENT SURVEY CONTROL
 AC9968  ______________________________________________________________________
 AC9968* NAD 83(1986) POSITION- 38 45 53.5    (N) 076 19 30.7    (W)   HD_HELD2
 AC9968* NAVD 88 ORTHO HEIGHT -     1.841 (meters)        6.04  (feet) ADJUSTED
 AC9968  ______________________________________________________________________
 AC9968  GEOID HEIGHT    -        -34.102 (meters)                     GEOID18
 AC9968  DYNAMIC HEIGHT  -          1.840 (meters)        6.04  (feet) COMP
 AC9968  MODELED GRAVITY -    980,051.0   (mgal)                       NAVD 88
 AC9968
 AC9968  VERT ORDER      -  SECOND    CLASS I
 AC9968
 AC9968.The horizontal coordinates were established by autonomous hand held GPS
 AC9968.observations and have an estimated accuracy of +/- 10 meters.
 AC9968
 AC9968.The orthometric height was determined by differential leveling and
 AC9968.adjusted by the NATIONAL GEODETIC SURVEY
 AC9968.in October 1997.
 AC9968
 AC9968.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC9968.GEOID18 height accuracy estimate available here.
 AC9968
 AC9968.This Tidal Bench Mark is designated as VM 3078
 AC9968.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC9968
 AC9968.Click photographs - Photos may exist for this station.
 AC9968
 AC9968.The dynamic height is computed by dividing the NAVD 88
 AC9968.geopotential number by the normal gravity value computed on the
 AC9968.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC9968.degrees latitude (g = 980.6199 gals.).
 AC9968
 AC9968.The modeled gravity was interpolated from observed gravity values.
 AC9968
 AC9968;                    North         East    Units  Estimated Accuracy
 AC9968;SPC MD       -   122,121.      458,646.      MT  (+/- 10 meters HH2 GPS)
 AC9968
 AC9968_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8486891517(NAD 83)
 AC9968
 AC9968                          SUPERSEDED SURVEY CONTROL
 AC9968
 AC9968.No superseded survey control is available for this station.
 AC9968
 AC9968_MARKER: DJ = TIDAL STATION DISK
 AC9968_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 AC9968_STAMPING: 1979 D 1983
 AC9968_MARK LOGO: NOS
 AC9968_PROJECTION: PROJECTING 1 CENTIMETERS
 AC9968_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC9968_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AC9968_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AC9968+SATELLITE: SATELLITE OBSERVATIONS - April 20, 2008
 AC9968_ROD/PIPE-DEPTH: 13.4 meters
 AC9968
 AC9968  HISTORY     - Date     Condition        Report By
 AC9968  HISTORY     - 1983     MONUMENTED       NOS
 AC9968  HISTORY     - 19950319 GOOD             MDSHA
 AC9968  HISTORY     - 20010302 GOOD             USPSQD
 AC9968  HISTORY     - 20060107 GOOD             USPSQD
 AC9968  HISTORY     - 20080420 GOOD             NGS
 AC9968
 AC9968                          STATION DESCRIPTION
 AC9968
 AC9968'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1995 (CAM)
 AC9968'THE BENCH MARK IS ON THE SOUTHWEST SIDE OF LOWES WHARF ROAD, 233.0 FT
 AC9968'(71.0 M) SOUTH SOUTHEAST OF BENCH MARK 1979 C 1983, 35.2 FT (10.7 M)
 AC9968'SOUTHWEST OF THE FOURTH UTILITY POLE FROM THE SHELLFISH COMPANY ON THE
 AC9968'NORTHEAST SIDE OF THE ROAD, AND 0.4 FT (12.2 CM) NORTHEAST OF A ORANGE
 AC9968'WITNESS POST.  THE BENCH MARK IS CRIMPED TO A STAINLESS STEEL ROD
 AC9968'DRIVEN 44.0 FT (13.4 M) TO REFUSAL, ENCASED IN A 4.0 IN PVC PIPE WITH
 AC9968'A CAP AND CONCRETE KICKBLOCK AND 0.4 FT (12.2 CM) ABOVE THE GROUND.
 AC9968
 AC9968                          STATION RECOVERY (2001)
 AC9968
 AC9968'RECOVERY NOTE BY US POWER SQUADRON 2001 (KGS)
 AC9968'RECOVERED IN GOOD CONDITION.
 AC9968
 AC9968                          STATION RECOVERY (2006)
 AC9968
 AC9968'RECOVERY NOTE BY US POWER SQUADRON 2006 (GTO)
 AC9968'IMMEDIATELY N OF CARSONITE WITNESS POST, 35.3 FT SW OF DP AND L POLE
 AC9968'26260-07902.
 AC9968
 AC9968                          STATION RECOVERY (2008)
 AC9968
 AC9968'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 AC9968'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC9967 ***********************************************************************
 AC9967  TIDAL BM    -  This is a Tidal Bench Mark.
 AC9967  DESIGNATION -  857 1979 E TIDAL
 AC9967  PID         -  AC9967
 AC9967  STATE/COUNTY-  MD/TALBOT
 AC9967  COUNTRY     -  US
 AC9967  USGS QUAD   -  CLAIBORNE (2016)
 AC9967
 AC9967                         *CURRENT SURVEY CONTROL
 AC9967  ______________________________________________________________________
 AC9967* NAD 83(1986) POSITION- 38 45 52.1    (N) 076 19 28.3    (W)   HD_HELD2
 AC9967* NAVD 88 ORTHO HEIGHT -     2.372 (meters)        7.78  (feet) ADJUSTED
 AC9967  ______________________________________________________________________
 AC9967  GEOID HEIGHT    -        -34.105 (meters)                     GEOID18
 AC9967  DYNAMIC HEIGHT  -          2.371 (meters)        7.78  (feet) COMP
 AC9967  MODELED GRAVITY -    980,050.9   (mgal)                       NAVD 88
 AC9967
 AC9967  VERT ORDER      -  SECOND    CLASS I
 AC9967
 AC9967.The horizontal coordinates were established by autonomous hand held GPS
 AC9967.observations and have an estimated accuracy of +/- 10 meters.
 AC9967
 AC9967.The orthometric height was determined by differential leveling and
 AC9967.adjusted by the NATIONAL GEODETIC SURVEY
 AC9967.in October 1997.
 AC9967
 AC9967.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC9967.GEOID18 height accuracy estimate available here.
 AC9967
 AC9967.This Tidal Bench Mark is designated as VM 3079
 AC9967.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AC9967
 AC9967.Click photographs - Photos may exist for this station.
 AC9967
 AC9967.The dynamic height is computed by dividing the NAVD 88
 AC9967.geopotential number by the normal gravity value computed on the
 AC9967.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC9967.degrees latitude (g = 980.6199 gals.).
 AC9967
 AC9967.The modeled gravity was interpolated from observed gravity values.
 AC9967
 AC9967;                    North         East    Units  Estimated Accuracy
 AC9967;SPC MD       -   122,078.      458,704.      MT  (+/- 10 meters HH2 GPS)
 AC9967
 AC9967_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8492591473(NAD 83)
 AC9967
 AC9967                          SUPERSEDED SURVEY CONTROL
 AC9967
 AC9967.No superseded survey control is available for this station.
 AC9967
 AC9967_MARKER: I = METAL ROD
 AC9967_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 AC9967_STAMPING: 1979 E 1983
 AC9967_MARK LOGO: NOS
 AC9967_PROJECTION: PROJECTING 1 CENTIMETERS
 AC9967_MAGNETIC: I = MARKER IS A STEEL ROD
 AC9967_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AC9967_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AC9967+SATELLITE: SATELLITE OBSERVATIONS - January 07, 2006
 AC9967_ROD/PIPE-DEPTH: 13.4 meters
 AC9967
 AC9967  HISTORY     - Date     Condition        Report By
 AC9967  HISTORY     - 1983     MONUMENTED       NOS
 AC9967  HISTORY     - 19950319 GOOD             MDSHA
 AC9967  HISTORY     - 20010302 GOOD             USPSQD
 AC9967  HISTORY     - 20060107 GOOD             USPSQD
 AC9967
 AC9967                          STATION DESCRIPTION
 AC9967
 AC9967'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1995 (CAM)
 AC9967'THE BENCH MARK IS ON THE SOUTHWEST SIDE OF LOWES WARF ROAD, 230.0 FT
 AC9967'(70.1 M) SOUTHEAST OF BENCH MARK 1979 D 1983, 53.8 FT (16.4 M) SOUTH
 AC9967'OF THE FIFTH UTILITY POLE FROM THE SHELLFISH COMPANY ON THE NORTHEAST
 AC9967'SIDE OF THE ROAD, 22.5 DT SOUTHWEST OF THE CENTERLINE OF THE ROAD AND
 AC9967'0.4 FT (12.2 CM) NORTHEAST OF AN ORANGE WITNESS POST.  THE BENCH MARK
 AC9967'IS A CRIMPED TO A STAINLESS STEEL ROD DRIVEN 44.0 FT (13.4 M) TO
 AC9967'REFUSAL, ENCASED IN A 4.0 IN PVC PIPE WITH CAP AND CONCRETE KICKBLOCK,
 AC9967'AND 0.4 FT (12.2 CM) ABOVE THE GROUND.
 AC9967
 AC9967                          STATION RECOVERY (2001)
 AC9967
 AC9967'RECOVERY NOTE BY US POWER SQUADRON 2001 (KGS)
 AC9967'RECOVERED IN GOOD CONDITION.
 AC9967
 AC9967                          STATION RECOVERY (2006)
 AC9967
 AC9967'RECOVERY NOTE BY US POWER SQUADRON 2006 (GTO)
 AC9967'52.7 FT S OF DP AND L POLE 26275-07890.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6457 ***********************************************************************
 DG6457  DESIGNATION -  857 2108 TIDAL 3
 DG6457  PID         -  DG6457
 DG6457  STATE/COUNTY-  MD/TALBOT
 DG6457  COUNTRY     -  US
 DG6457  USGS QUAD   -  OXFORD (2016)
 DG6457
 DG6457                         *CURRENT SURVEY CONTROL
 DG6457  ______________________________________________________________________
 DG6457* NAD 83(1986) POSITION- 38 41 30.68   (N) 076 10 26.62   (W)   HD_HELD1
 DG6457* NAVD 88 ORTHO HEIGHT -     2.936 (meters)        9.63  (feet) ADJUSTED
 DG6457  ______________________________________________________________________
 DG6457  GEOID HEIGHT    -        -34.629 (meters)                     GEOID18
 DG6457  DYNAMIC HEIGHT  -          2.934 (meters)        9.63  (feet) COMP
 DG6457  MODELED GRAVITY -    980,031.8   (mgal)                       NAVD 88
 DG6457
 DG6457  VERT ORDER      -  SECOND    CLASS I
 DG6457
 DG6457.The horizontal coordinates were determined by differentially corrected
 DG6457.hand held GPS observations or other comparable positioning techniques
 DG6457.and have an estimated accuracy of +/- 3 meters.
 DG6457
 DG6457.The orthometric height was determined by differential leveling and
 DG6457.adjusted by the NATIONAL GEODETIC SURVEY
 DG6457.in September 2004.
 DG6457
 DG6457.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6457.GEOID18 height accuracy estimate available here.
 DG6457
 DG6457.Click photographs - Photos may exist for this station.
 DG6457
 DG6457.The dynamic height is computed by dividing the NAVD 88
 DG6457.geopotential number by the normal gravity value computed on the
 DG6457.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6457.degrees latitude (g = 980.6199 gals.).
 DG6457
 DG6457.The modeled gravity was interpolated from observed gravity values.
 DG6457
 DG6457;                    North         East    Units  Estimated Accuracy
 DG6457;SPC MD       -   114,125.0     471,853.2     MT  (+/- 3 meters HH1 GPS) 
 DG6457
 DG6457_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9789483236(NAD 83)
 DG6457
 DG6457                          SUPERSEDED SURVEY CONTROL
 DG6457
 DG6457.No superseded survey control is available for this station.
 DG6457
 DG6457_MARKER: DB = BENCH MARK DISK
 DG6457_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DG6457_SP_SET: BRICK SIDEWALK
 DG6457_STAMPING: NO 3 1943
 DG6457_MARK LOGO: CGS
 DG6457_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6457_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DG6457_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6457+SATELLITE: SATELLITE OBSERVATIONS - March 19, 2017
 DG6457
 DG6457  HISTORY     - Date     Condition        Report By
 DG6457  HISTORY     - 1943     MONUMENTED       CGS
 DG6457  HISTORY     - 20000913 GOOD             MDSHA
 DG6457  HISTORY     - 20050809 GOOD             USPSQD
 DG6457  HISTORY     - 20061005 GOOD             USPSQD
 DG6457  HISTORY     - 20170319 POOR             BASE9
 DG6457
 DG6457                          STATION DESCRIPTION
 DG6457
 DG6457'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 DG6457'THE MARK IS LOCATED IN THE TOWN OF OXFORD.  TO REACH THE MARK FROM THE
 DG6457'POST OFFICE IN OXFORD, GO SOUTHWEST ALONG WILSON STREET FOR 0.05 MILES
 DG6457'(0.08 KM) TO MORRIS STREET.  TURN RIGHT AND GO NORTH FOR 0.15 MILES
 DG6457'(0.24 KM) TO THE MARK ON THE RIGHT.  IT IS 31.2 FEET (9.5 M) EAST OF
 DG6457'THE CENTER LINE OF MORRIS STREET, 19.8 FEET (6.0 M) SOUTHWEST OF THE
 DG6457'SOUTHWEST CORNER OF HOUSE NUMBER 308, 35.5 FEET (10.8 M) NORTHWEST OF
 DG6457'THE NORTHWEST CORNER OF HOUSE NUMBER 306, 74.0 FEET (22.6 M) NORTHEAST
 DG6457'AND ACROSS THE STREET FROM TELEPHONE POLE NUMBER 5, AND ACROSS THE
 DG6457'STREET FROM THE GRAPEVINE HOUSE.  IT IS A CGS DISK SET IN A BRICK
 DG6457'SIDEWALK.
 DG6457
 DG6457                          STATION RECOVERY (2005)
 DG6457
 DG6457'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 DG6457'AS DESCRIBED
 DG6457
 DG6457                          STATION RECOVERY (2006)
 DG6457
 DG6457'RECOVERY NOTE BY US POWER SQUADRON 2006 (BPS)
 DG6457'RECOVERED IN GOOD CONDITION.
 DG6457
 DG6457                          STATION RECOVERY (2017)
 DG6457
 DG6457'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (RLS)
 DG6457'SIDEWALK APPEARS TO HAVE UPLIFTED.  MARK SHOULD BE USED WITH CAUTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6424 ***********************************************************************
 DG6424  DESIGNATION -  857 2342 TIDAL 12
 DG6424  PID         -  DG6424
 DG6424  STATE/COUNTY-  MD/TALBOT
 DG6424  COUNTRY     -  US
 DG6424  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6424
 DG6424                         *CURRENT SURVEY CONTROL
 DG6424  ______________________________________________________________________
 DG6424* NAD 83(1986) POSITION- 38 47 13.2    (N) 076 13 20.1    (W)   HD_HELD2
 DG6424* NAVD 88 ORTHO HEIGHT -     0.759 (meters)        2.49  (feet) ADJUSTED
 DG6424  ______________________________________________________________________
 DG6424  GEOID HEIGHT    -        -34.332 (meters)                     GEOID18
 DG6424  DYNAMIC HEIGHT  -          0.758 (meters)        2.49  (feet) COMP
 DG6424  MODELED GRAVITY -    980,045.8   (mgal)                       NAVD 88
 DG6424
 DG6424  VERT ORDER      -  SECOND    CLASS I
 DG6424
 DG6424.The horizontal coordinates were established by autonomous hand held GPS
 DG6424.observations and have an estimated accuracy of +/- 10 meters.
 DG6424
 DG6424.The orthometric height was determined by differential leveling and
 DG6424.adjusted by the NATIONAL GEODETIC SURVEY
 DG6424.in September 2004.
 DG6424
 DG6424.No vertical observational check was made to the station.
 DG6424
 DG6424.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6424.GEOID18 height accuracy estimate available here.
 DG6424
 DG6424.Click photographs - Photos may exist for this station.
 DG6424
 DG6424.The dynamic height is computed by dividing the NAVD 88
 DG6424.geopotential number by the normal gravity value computed on the
 DG6424.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6424.degrees latitude (g = 980.6199 gals.).
 DG6424
 DG6424.The modeled gravity was interpolated from observed gravity values.
 DG6424
 DG6424;                    North         East    Units  Estimated Accuracy
 DG6424;SPC MD       -   124,649.      467,571.      MT  (+/- 10 meters HH2 GPS)
 DG6424
 DG6424_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9384493849(NAD 83)
 DG6424
 DG6424                          SUPERSEDED SURVEY CONTROL
 DG6424
 DG6424.No superseded survey control is available for this station.
 DG6424
 DG6424_MARKER: DD = SURVEY DISK
 DG6424_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6424_STAMPING: NO 12 NOV 1981
 DG6424_MARK LOGO: ANDREW
 DG6424_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6424_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6424+STABILITY: SURFACE MOTION
 DG6424
 DG6424  HISTORY     - Date     Condition        Report By
 DG6424  HISTORY     - 1981     MONUMENTED       ANDREW
 DG6424  HISTORY     - 20011009 GOOD             MDSHA
 DG6424  HISTORY     - 20060328 MARK NOT FOUND   USPSQD
 DG6424
 DG6424                          STATION DESCRIPTION
 DG6424
 DG6424'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DG6424'THE MARK IS LOCATED IN THE TOWN OF ST. MICHAELS, JUST WEST OF THE
 DG6424'CHESAPEAKE BAY MARITIME MUSEUM.  THE MARK IS 125.1 FEET (38.1 M) WEST
 DG6424'OF AN ANCHOR CHAIN FENCE BETWEEN THE MARITIME MUSEUM PROPERTY AND A
 DG6424'BRICK HOUSE WEST OF THE MUSEUM, 92.6 FEET (28.2 M) SOUTHWEST OF THE
 DG6424'SOUTHEAST CORNER OF GARAGE ON THE EAST END OF THE BRICK HOUSE WEST OF
 DG6424'THE MUSEUM PROPERTY, 64.6 FEET (19.7 M) SOUTHWEST OF THE SOUTHEAST
 DG6424'CORNER OF THE BRICK HOUSE WEST OF THE MUSEUM PROPERTY, 38.7 FEET (11.8
 DG6424'M) EAST OF THE SOUTH HAND RAIL OF A WOODEN FOOT BRIDGE, 7.8 FEET (2.4
 DG6424'M) NORTH OF THE SOUTH EDGE OF A WOODEN BULKHEAD ON THE WATERFRONT, 0.6
 DG6424'FEET (18.3 CM) NORTH OF AN ANCHOR CHAIN FENCE ON THE SOUTH SIDE OF THE
 DG6424'BRICK HOUSE, AND IN LINE WITH THE FRONT DOOR OF THE BRICK HOUSE.  IT
 DG6424'IS AN AMA DISK SET IN THE TOP OF A 6-INCH (15 CM) ROUND CONCRETE
 DG6424'MONUMENT WHICH IS FLUSH WITH THE GROUND.
 DG6424
 DG6424                          STATION RECOVERY (2006)
 DG6424
 DG6424'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6424'MARITIME MUSEUM LANDSCAPED WITH NEW LAWN.  IT APPEARS THAT THE MARKER
 DG6424'IS BURIED DEEPLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6425 ***********************************************************************
 DG6425  DESIGNATION -  857 2342 TIDAL 13
 DG6425  PID         -  DG6425
 DG6425  STATE/COUNTY-  MD/TALBOT
 DG6425  COUNTRY     -  US
 DG6425  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6425
 DG6425                         *CURRENT SURVEY CONTROL
 DG6425  ______________________________________________________________________
 DG6425* NAD 83(1986) POSITION- 38 47 14.6    (N) 076 13 15.7    (W)   HD_HELD2
 DG6425* NAVD 88 ORTHO HEIGHT -     0.620 (meters)        2.03  (feet) ADJUSTED
 DG6425  ______________________________________________________________________
 DG6425  GEOID HEIGHT    -        -34.334 (meters)                     GEOID18
 DG6425  DYNAMIC HEIGHT  -          0.620 (meters)        2.03  (feet) COMP
 DG6425  MODELED GRAVITY -    980,045.7   (mgal)                       NAVD 88
 DG6425
 DG6425  VERT ORDER      -  SECOND    CLASS I
 DG6425
 DG6425.The horizontal coordinates were established by autonomous hand held GPS
 DG6425.observations and have an estimated accuracy of +/- 10 meters.
 DG6425
 DG6425.The orthometric height was determined by differential leveling and
 DG6425.adjusted by the NATIONAL GEODETIC SURVEY
 DG6425.in September 2004.
 DG6425
 DG6425.No vertical observational check was made to the station.
 DG6425
 DG6425.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6425.GEOID18 height accuracy estimate available here.
 DG6425
 DG6425.Click photographs - Photos may exist for this station.
 DG6425
 DG6425.The dynamic height is computed by dividing the NAVD 88
 DG6425.geopotential number by the normal gravity value computed on the
 DG6425.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6425.degrees latitude (g = 980.6199 gals.).
 DG6425
 DG6425.The modeled gravity was interpolated from observed gravity values.
 DG6425
 DG6425;                    North         East    Units  Estimated Accuracy
 DG6425;SPC MD       -   124,693.      467,677.      MT  (+/- 10 meters HH2 GPS)
 DG6425
 DG6425_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9395193891(NAD 83)
 DG6425
 DG6425                          SUPERSEDED SURVEY CONTROL
 DG6425
 DG6425.No superseded survey control is available for this station.
 DG6425
 DG6425_MARKER: DD = SURVEY DISK
 DG6425_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6425_STAMPING: NO 13 NOV 1981
 DG6425_MARK LOGO: NOS
 DG6425_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6425_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6425+STABILITY: SURFACE MOTION
 DG6425
 DG6425  HISTORY     - Date     Condition        Report By
 DG6425  HISTORY     - 1981     MONUMENTED       ANDREW
 DG6425  HISTORY     - 20011009 GOOD             MDSHA
 DG6425  HISTORY     - 20060328 GOOD             USPSQD
 DG6425
 DG6425                          STATION DESCRIPTION
 DG6425
 DG6425'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DG6425'THE MARK IS LOCATED IN THE TOWN OF SAINT MICHAELS, JUST WEST OF THE
 DG6425'CHESAPEAKE BAY MARITIME MUSEUM.  THE MARK IS IS 208.4 FEET (63.5 M)
 DG6425'WEST OF AN ANCHOR CHAIN FENCE BORDERING THE WESTERN EDGE OF THE
 DG6425'MARITIME MUSEUM, 82.1 FEET (25.0 M) SOUTHEAST OF THE SOUTHWEST CORNER
 DG6425'OF THE DOBSON HOUSE ON THE MUSEUM PROPERTY, 77.8 FEET (23.7 M)
 DG6425'WEST-NORTHWEST OF A FIRE HYDRANT ON THE WEST SIDE OF THE MUSEUM STORE,
 DG6425'70.6 FEET (21.5 M) NORTH OF THE NORTHWEST CORNER OF THE CRAB CLAW
 DG6425'RESTAURANT, 9.8 FEET (3.0 M) NORTH OF THE INTERSECTION OF THE
 DG6425'EAST-WEST AND NORTH-SOUTH BULKHEADS, 1.0 FEET (0.3 M) NORTH OF AN
 DG6425'ANCHOR CHAIN FENCE, AND IN LINE WITH THE NORTH-SOUTH BULKHEAD. IT IS
 DG6425'AN AMA DISK SET IN THE TOP OF A 6-INCH (15 CM) ROUND CONCRETE MONUMENT
 DG6425'FLUSH WITH THE GROUND.
 DG6425
 DG6425                          STATION RECOVERY (2006)
 DG6425
 DG6425'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6425'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6458 ***********************************************************************
 DG6458  DESIGNATION -  857 2342 TIDAL 4
 DG6458  PID         -  DG6458
 DG6458  STATE/COUNTY-  MD/TALBOT
 DG6458  COUNTRY     -  US
 DG6458  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6458
 DG6458                         *CURRENT SURVEY CONTROL
 DG6458  ______________________________________________________________________
 DG6458* NAD 83(1986) POSITION- 38 47 12.29   (N) 076 13 32.64   (W)   HD_HELD1
 DG6458* NAVD 88 ORTHO HEIGHT -     3.283 (meters)       10.77  (feet) ADJUSTED
 DG6458  ______________________________________________________________________
 DG6458  GEOID HEIGHT    -        -34.324 (meters)                     GEOID18
 DG6458  DYNAMIC HEIGHT  -          3.281 (meters)       10.76  (feet) COMP
 DG6458  MODELED GRAVITY -    980,046.0   (mgal)                       NAVD 88
 DG6458
 DG6458  VERT ORDER      -  SECOND    CLASS I
 DG6458
 DG6458.The horizontal coordinates were determined by differentially corrected
 DG6458.hand held GPS observations or other comparable positioning techniques
 DG6458.and have an estimated accuracy of +/- 3 meters.
 DG6458
 DG6458.The orthometric height was determined by differential leveling and
 DG6458.adjusted by the NATIONAL GEODETIC SURVEY
 DG6458.in September 2004.
 DG6458
 DG6458.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6458.GEOID18 height accuracy estimate available here.
 DG6458
 DG6458.Click photographs - Photos may exist for this station.
 DG6458
 DG6458.The dynamic height is computed by dividing the NAVD 88
 DG6458.geopotential number by the normal gravity value computed on the
 DG6458.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6458.degrees latitude (g = 980.6199 gals.).
 DG6458
 DG6458.The modeled gravity was interpolated from observed gravity values.
 DG6458
 DG6458;                    North         East    Units  Estimated Accuracy
 DG6458;SPC MD       -   124,618.7     467,268.7     MT  (+/- 3 meters HH1 GPS) 
 DG6458
 DG6458_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9354193825(NAD 83)
 DG6458
 DG6458                          SUPERSEDED SURVEY CONTROL
 DG6458
 DG6458.No superseded survey control is available for this station.
 DG6458
 DG6458_MARKER: DB = BENCH MARK DISK
 DG6458_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 DG6458_SP_SET: WATER TANK FOUNDATION
 DG6458_STAMPING: NO 4 1942
 DG6458_MARK LOGO: CGS
 DG6458_PROJECTION: PROJECTING 30 CENTIMETERS
 DG6458_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6458_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DG6458_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6458+SATELLITE: SATELLITE OBSERVATIONS - October 25, 2023
 DG6458
 DG6458  HISTORY     - Date     Condition        Report By
 DG6458  HISTORY     - 1942     MONUMENTED       CGS
 DG6458  HISTORY     - 20011002 GOOD             MDSHA
 DG6458  HISTORY     - 20060328 GOOD             USPSQD
 DG6458  HISTORY     - 20110220 GOOD             NGS
 DG6458  HISTORY     - 20140606 GOOD             RODCON
 DG6458  HISTORY     - 20140930 GOOD             INDIV
 DG6458  HISTORY     - 20231025 GOOD             USPSQD
 DG6458
 DG6458                          STATION DESCRIPTION
 DG6458
 DG6458'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DG6458'THE MARK IS LOCATED IN THE TOWN OF SAINT MICHAELS.  TO REACH THE MARK
 DG6458'FROM THE POST OFFICE IN SAINT MICHAELS, PROCEED NORTH ALONG STATE
 DG6458'HIGHWAY 33 FOR 0.15 MI (0.24 KM) TO RAILROAD AVENUE. TURN LEFT AND GO
 DG6458'WEST ALONG RAILROAD AVENUE FOR 0.05 MI (0.08 KM) TO THE MARK ON THE
 DG6458'RIGHT.  IT IS 74.7 FT (22.8 M) NORTH OF THE CENTER OF RAILROAD AVENUE,
 DG6458'73.0 FT (22.3 M) SOUTHEAST OF THE SOUTHWEST CORNER OF A 1 1/2 STORY
 DG6458'BUILDING, 36.2 FT (11.0 M) SOUTHWEST OF THE NORTHWEST CORNER OF THE
 DG6458'UNION UNITED METHODIST CHURCH, 28.5 FT (8.7 M) NORTHEAST OF THE
 DG6458'NORTHEAST CORNER OF A 1 STORY BRICK BUILDING, 19.4 FT (5.9 M)
 DG6458'NORTHWEST OF THE NORTHEAST CORNER OF A BRICK PUMPING STATION BUILDING,
 DG6458'SET IN THE TOP OF A 4.5 FT (1.4 M) X 4.5 FT (1.4 M) CONCRETE
 DG6458'FOUNDATION, AND PROJECTING 1 FOOT.
 DG6458
 DG6458                          STATION RECOVERY (2006)
 DG6458
 DG6458'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6458'RECOVERED IN GOOD CONDITION.
 DG6458
 DG6458                          STATION RECOVERY (2011)
 DG6458
 DG6458'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 DG6458'RECOVERED IN GOOD CONDITION.
 DG6458
 DG6458                          STATION RECOVERY (2014)
 DG6458
 DG6458'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DG6458'RECOVERED IN GOOD CONDITION.
 DG6458
 DG6458                          STATION RECOVERY (2014)
 DG6458
 DG6458'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (HBH)
 DG6458'RECOVERED IN GOOD CONDITION. BOTH THE 1 STORY BRICK BUILDING AND THE
 DG6458'BRICK PUMP STATION ARE GONE. REMAINING MEASUREMENTS AGREE WITH THE
 DG6458'2001 DESCRIPTION.
 DG6458
 DG6458                          STATION RECOVERY (2023)
 DG6458
 DG6458'RECOVERY NOTE BY US POWER SQUADRON 2023 (DMM)
 DG6458'NORTHEAST CORNER OF UNION UNITED METHODIST CHURCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6423 ***********************************************************************
 DG6423  DESIGNATION -  857 2342 TIDAL 7
 DG6423  PID         -  DG6423
 DG6423  STATE/COUNTY-  MD/TALBOT
 DG6423  COUNTRY     -  US
 DG6423  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6423
 DG6423                         *CURRENT SURVEY CONTROL
 DG6423  ______________________________________________________________________
 DG6423* NAD 83(1986) POSITION- 38 47 12.1    (N) 076 13 24.1    (W)   HD_HELD2
 DG6423* NAVD 88 ORTHO HEIGHT -     2.462 (meters)        8.08  (feet) ADJUSTED
 DG6423  ______________________________________________________________________
 DG6423  GEOID HEIGHT    -        -34.330 (meters)                     GEOID18
 DG6423  DYNAMIC HEIGHT  -          2.460 (meters)        8.07  (feet) COMP
 DG6423  MODELED GRAVITY -    980,045.8   (mgal)                       NAVD 88
 DG6423
 DG6423  VERT ORDER      -  SECOND    CLASS I
 DG6423
 DG6423.The horizontal coordinates were established by autonomous hand held GPS
 DG6423.observations and have an estimated accuracy of +/- 10 meters.
 DG6423
 DG6423.The orthometric height was determined by differential leveling and
 DG6423.adjusted by the NATIONAL GEODETIC SURVEY
 DG6423.in September 2004.
 DG6423
 DG6423.No vertical observational check was made to the station.
 DG6423
 DG6423.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6423.GEOID18 height accuracy estimate available here.
 DG6423
 DG6423.Click photographs - Photos may exist for this station.
 DG6423
 DG6423.The dynamic height is computed by dividing the NAVD 88
 DG6423.geopotential number by the normal gravity value computed on the
 DG6423.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6423.degrees latitude (g = 980.6199 gals.).
 DG6423
 DG6423.The modeled gravity was interpolated from observed gravity values.
 DG6423
 DG6423;                    North         East    Units  Estimated Accuracy
 DG6423;SPC MD       -   124,615.      467,475.      MT  (+/- 10 meters HH2 GPS)
 DG6423
 DG6423_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9374793816(NAD 83)
 DG6423
 DG6423                          SUPERSEDED SURVEY CONTROL
 DG6423
 DG6423.No superseded survey control is available for this station.
 DG6423
 DG6423_MARKER: DB = BENCH MARK DISK
 DG6423_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DG6423_SP_SET: CURB
 DG6423_STAMPING: NO 7 1969
 DG6423_MARK LOGO: CGS
 DG6423_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6423_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DG6423_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6423+SATELLITE: SATELLITE OBSERVATIONS - October 09, 2001
 DG6423
 DG6423  HISTORY     - Date     Condition        Report By
 DG6423  HISTORY     - 1969     MONUMENTED       CGS
 DG6423  HISTORY     - 20011009 GOOD             MDSHA
 DG6423  HISTORY     - 20050815 GOOD             USPSQD
 DG6423  HISTORY     - 20140930 MARK NOT FOUND   INDIV
 DG6423
 DG6423                          STATION DESCRIPTION
 DG6423
 DG6423'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DG6423'THE MARK IS LOCATED IN THE TOWN OF ST. MICHAELS.  TO REACH THE MARK
 DG6423'FROM THE POST OFFICE IN SAINT MICHAELS, PROCEED NORTH ALONG STATE
 DG6423'HIGHWAY 33 FOR 0.15 MI (0.24 KM) TO CHERRY STREET. TURN RIGHT AND GO
 DG6423'EAST ON CHERRY STREET FOR 0.05 MI (0.08 KM) TO THE MARK ON THE RIGHT.
 DG6423'IT IS 12.5 FT (3.8 M) SOUTH OF THE CENTER OF CHERRY STREET, 22.2 FT
 DG6423'(6.8 M) WEST OF THE CENTER OF LOCUST STREET, 11.8 FT (3.6 M) WEST OF
 DG6423'POWER POLE NUMBER 29173-08651, 16.3 FT (5.0 M) NORTH OF THE NORTHEAST
 DG6423'CORNER OF HOUSE NUMBER 106, 32.0 FT (9.8 M) EAST OF THE PROJECTED
 DG6423'CENTER OF CEDAR STREET, A USGS DISK SET IN THE TOP OF A CONCRETE CURB.
 DG6423
 DG6423                          STATION RECOVERY (2005)
 DG6423
 DG6423'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 DG6423'MARK IS NOW PAINTED YELLOW AS IS THE CURB
 DG6423
 DG6423                          STATION RECOVERY (2014)
 DG6423
 DG6423'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (HBH)
 DG6423'THE RAISED CONCRETE CURB WHERE THE STATION WAS LOCATED HAS BEEN
 DG6423'REMOVED AND A REPLACED WITH A CONCAVE BRICK GUTTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6413 ***********************************************************************
 DG6413  DESIGNATION -  857 2354 TIDAL 1
 DG6413  PID         -  DG6413
 DG6413  STATE/COUNTY-  MD/TALBOT
 DG6413  COUNTRY     -  US
 DG6413  USGS QUAD   -  EASTON (2016)
 DG6413
 DG6413                         *CURRENT SURVEY CONTROL
 DG6413  ______________________________________________________________________
 DG6413* NAD 83(1986) POSITION- 38 47 35.3    (N) 076 07 30.3    (W)   HD_HELD2
 DG6413* NAVD 88 ORTHO HEIGHT -     1.135 (meters)        3.72  (feet) ADJUSTED
 DG6413  ______________________________________________________________________
 DG6413  GEOID HEIGHT    -        -34.539 (meters)                     GEOID18
 DG6413  DYNAMIC HEIGHT  -          1.134 (meters)        3.72  (feet) COMP
 DG6413  MODELED GRAVITY -    980,040.3   (mgal)                       NAVD 88
 DG6413
 DG6413  VERT ORDER      -  SECOND    CLASS I
 DG6413
 DG6413.The horizontal coordinates were established by autonomous hand held GPS
 DG6413.observations and have an estimated accuracy of +/- 10 meters.
 DG6413
 DG6413.The orthometric height was determined by differential leveling and
 DG6413.adjusted by the NATIONAL GEODETIC SURVEY
 DG6413.in September 2004.
 DG6413
 DG6413.No vertical observational check was made to the station.
 DG6413
 DG6413.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6413.GEOID18 height accuracy estimate available here.
 DG6413
 DG6413.Click photographs - Photos may exist for this station.
 DG6413
 DG6413.The dynamic height is computed by dividing the NAVD 88
 DG6413.geopotential number by the normal gravity value computed on the
 DG6413.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6413.degrees latitude (g = 980.6199 gals.).
 DG6413
 DG6413.The modeled gravity was interpolated from observed gravity values.
 DG6413
 DG6413;                    North         East    Units  Estimated Accuracy
 DG6413;SPC MD       -   125,407.      476,006.      MT  (+/- 10 meters HH2 GPS)
 DG6413
 DG6413_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0229294422(NAD 83)
 DG6413
 DG6413                          SUPERSEDED SURVEY CONTROL
 DG6413
 DG6413.No superseded survey control is available for this station.
 DG6413
 DG6413_MARKER: DB = BENCH MARK DISK
 DG6413_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DG6413_SP_SET: SEAWALL
 DG6413_STAMPING: NO 1 1942
 DG6413_MARK LOGO: CGS
 DG6413_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6413_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6413+STABILITY: SURFACE MOTION
 DG6413_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6413+SATELLITE: SATELLITE OBSERVATIONS - October 22, 2001
 DG6413
 DG6413  HISTORY     - Date     Condition        Report By
 DG6413  HISTORY     - 1942     MONUMENTED       CGS
 DG6413  HISTORY     - 20011022 GOOD             MDSHA
 DG6413
 DG6413                          STATION DESCRIPTION
 DG6413
 DG6413'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DG6413'THE MARK IS LOCATED ABOUT 3.0 MI (4.83 KM) WEST-NORTHWEST OF EASTON,
 DG6413'2.7 MI (4.35 KM) SOUTHEAST OF TUNIS MILLS AND 1.7 MI (2.74 KM)
 DG6413'SOUTH-SOUTHEAST OF UNIONVILLE.  TO REACH FROM THE INTERSECTION OF
 DG6413'STATE HIGHWAY 322 (EASTON PARKWAY) AND STATE HIGHWAY 33 (ST. MICHAELS
 DG6413'RD) PROCEED WEST ALONG STATE HIGHWAY 33 FOR 1.75 MI (2.82 KM) TO STATE
 DG6413'HIGHWAY 370. TURN RIGHT AND GO NORTHWEST ALONG STATE HIGHWAY 370 FOR
 DG6413'0.85 MI (1.37 KM) TO THE BRIDGE OVER MI (0.0 KM) RIVER AND THE MARK ON
 DG6413'THE LEFT.  IT IS 119.7 FT (36.5 M) SOUTHWEST OF THE CENTER LINE OF THE
 DG6413'HIGHWAY, 88.5 FT (27.0 M) WEST OF A POWER POLE WITH NO NUMBERS, 60.5
 DG6413'FT (18.4 M) SOUTHWEST OF THE NORTH CORNER OF THE SEAWALL, 1.7 FT (0.5
 DG6413'M) SOUTHEAST OF THE NORTHWEST EDGE OF A WOODEN BULKHEAD, 0.5 FT (0.2
 DG6413'M) SOUTHEAST OF THE NORTHWEST FACE OF THE SEAWALL, AND ABOUT 3.0 FT
 DG6413'(0.9 M) HIGHER THAN THE WATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0162 ***********************************************************************
 HV0162  DESIGNATION -  857 2817 TIDAL 1
 HV0162  PID         -  HV0162
 HV0162  STATE/COUNTY-  MD/QUEEN ANNES
 HV0162  COUNTRY     -  US
 HV0162  USGS QUAD   -  KENT ISLAND (2016)
 HV0162
 HV0162                         *CURRENT SURVEY CONTROL
 HV0162  ______________________________________________________________________
 HV0162* NAD 83(1986) POSITION- 38 58 37.     (N) 076 18 11.     (W)   SCALED
 HV0162* NAVD 88 ORTHO HEIGHT -     2.217 (meters)        7.27  (feet) ADJUSTED
 HV0162  ______________________________________________________________________
 HV0162  GEOID HEIGHT    -        -33.613 (meters)                     GEOID18
 HV0162  DYNAMIC HEIGHT  -          2.215 (meters)        7.27  (feet) COMP
 HV0162  MODELED GRAVITY -    980,080.8   (mgal)                       NAVD 88
 HV0162
 HV0162  VERT ORDER      -  FIRST     CLASS II
 HV0162
 HV0162.The horizontal coordinates were scaled from a map and have
 HV0162.an estimated accuracy of +/- 6 seconds.
 HV0162
 HV0162.The orthometric height was determined by differential leveling and
 HV0162.adjusted by the NATIONAL GEODETIC SURVEY
 HV0162.in June 1991.
 HV0162
 HV0162.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0162.GEOID18 height accuracy estimate available here.
 HV0162
 HV0162.Click photographs - Photos may exist for this station.
 HV0162
 HV0162.The dynamic height is computed by dividing the NAVD 88
 HV0162.geopotential number by the normal gravity value computed on the
 HV0162.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0162.degrees latitude (g = 980.6199 gals.).
 HV0162
 HV0162.The modeled gravity was interpolated from observed gravity values.
 HV0162
 HV0162;                    North         East    Units  Estimated Accuracy
 HV0162;SPC MD       -   145,680.      460,390.      MT  (+/- 180 meters Scaled)
 HV0162
 HV0162_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ871150(NAD 83)
 HV0162
 HV0162                          SUPERSEDED SURVEY CONTROL
 HV0162
 HV0162  NGVD 29 (11/26/84)    2.452  (m)            8.04   (f) ADJUSTED    1 2
 HV0162
 HV0162.Superseded values are not recommended for survey control.
 HV0162
 HV0162.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0162.See file dsdata.pdf to determine how the superseded data were derived.
 HV0162
 HV0162_MARKER: DB = BENCH MARK DISK
 HV0162_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0162_SP_SET: ABUTMENT
 HV0162_STAMPING: NO 1 1940
 HV0162_MARK LOGO: CGS
 HV0162_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0162
 HV0162  HISTORY     - Date     Condition        Report By
 HV0162  HISTORY     - 1940     MONUMENTED       CGS
 HV0162  HISTORY     - 1971     GOOD             NGS
 HV0162  HISTORY     - 20000115 MARK NOT FOUND   USPSQD
 HV0162  HISTORY     - 20030423 MARK NOT FOUND   USPSQD
 HV0162
 HV0162                          STATION DESCRIPTION
 HV0162
 HV0162'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0162'0.7 MI W FROM CHESTER.
 HV0162'ABOUT 0.15 MILE WEST ALONG U.S. HIGHWAY 301 AND 50 FROM THE
 HV0162'KENT ISLAND METHODIST CHURCH AT CHESTER, THENCE 0.55 MILE
 HV0162'WEST ALONG A BLACK TOP ROAD (OLD STATE HIGHWAY 18), 0.55 MILE
 HV0162'EAST ALONG THE BLACK TOP ROAD FROM THE JUNCTION OF STATE
 HV0162'HIGHWAY 18 LEADING NORTH FROM STEVENSVILLE, SET ON THE TOP OF
 HV0162'THE NORTH END OF THE WEST ABUTMENT OF A BRIDGE OVER COX CREEK,
 HV0162'11.6 FEET NORTH OF THE CENTER LINE OF THE BLACK TOP ROAD AND
 HV0162'1/2 FOOT ABOVE THE LEVEL OF THE ROAD.
 HV0162
 HV0162                          STATION RECOVERY (2000)
 HV0162
 HV0162'RECOVERY NOTE BY US POWER SQUADRON 2000
 HV0162'MARK NOT FOUND.
 HV0162
 HV0162                          STATION RECOVERY (2003)
 HV0162
 HV0162'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HV0162'REFERENCED BRIDGE OVER COX CREEK COMPLETELY REMOVED AND REBUILT IN
 HV0162'1988 (DATE ON BRIDGE ABUTMENT) STATE HIGHWAY 18 HAS BEEN REPAVED AND
 HV0162'WIDENED.  THE NEW BRIDGE IS NOW CONCRETE WITH STEEL GUARDRAILS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0163 ***********************************************************************
 HV0163  DESIGNATION -  857 2817 TIDAL 2
 HV0163  PID         -  HV0163
 HV0163  STATE/COUNTY-  MD/QUEEN ANNES
 HV0163  COUNTRY     -  US
 HV0163  USGS QUAD   -  KENT ISLAND (2016)
 HV0163
 HV0163                         *CURRENT SURVEY CONTROL
 HV0163  ______________________________________________________________________
 HV0163* NAD 83(1986) POSITION- 38 58 37.     (N) 076 18 17.     (W)   SCALED
 HV0163* NAVD 88 ORTHO HEIGHT -     1.094 (meters)        3.59  (feet) ADJUSTED
 HV0163  ______________________________________________________________________
 HV0163  GEOID HEIGHT    -        -33.611 (meters)                     GEOID18
 HV0163  DYNAMIC HEIGHT  -          1.094 (meters)        3.59  (feet) COMP
 HV0163  MODELED GRAVITY -    980,080.8   (mgal)                       NAVD 88
 HV0163
 HV0163  VERT ORDER      -  FIRST     CLASS II
 HV0163
 HV0163.The horizontal coordinates were scaled from a map and have
 HV0163.an estimated accuracy of +/- 6 seconds.
 HV0163
 HV0163.The orthometric height was determined by differential leveling and
 HV0163.adjusted by the NATIONAL GEODETIC SURVEY
 HV0163.in June 1991.
 HV0163
 HV0163.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0163.GEOID18 height accuracy estimate available here.
 HV0163
 HV0163.Click photographs - Photos may exist for this station.
 HV0163
 HV0163.The dynamic height is computed by dividing the NAVD 88
 HV0163.geopotential number by the normal gravity value computed on the
 HV0163.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0163.degrees latitude (g = 980.6199 gals.).
 HV0163
 HV0163.The modeled gravity was interpolated from observed gravity values.
 HV0163
 HV0163;                    North         East    Units  Estimated Accuracy
 HV0163;SPC MD       -   145,680.      460,250.      MT  (+/- 180 meters Scaled)
 HV0163
 HV0163_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ869150(NAD 83)
 HV0163
 HV0163                          SUPERSEDED SURVEY CONTROL
 HV0163
 HV0163  NGVD 29 (11/26/84)    1.330  (m)            4.36   (f) ADJUSTED    1 2
 HV0163
 HV0163.Superseded values are not recommended for survey control.
 HV0163
 HV0163.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0163.See file dsdata.pdf to determine how the superseded data were derived.
 HV0163
 HV0163_MARKER: DB = BENCH MARK DISK
 HV0163_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0163_SP_SET: CULVERT
 HV0163_STAMPING: NO 2 1940
 HV0163_MARK LOGO: CGS
 HV0163_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0163
 HV0163  HISTORY     - Date     Condition        Report By
 HV0163  HISTORY     - 1940     MONUMENTED       CGS
 HV0163  HISTORY     - 1971     GOOD             NGS
 HV0163  HISTORY     - 20000115 MARK NOT FOUND   USPSQD
 HV0163
 HV0163                          STATION DESCRIPTION
 HV0163
 HV0163'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0163'0.7 MI W FROM CHESTER.
 HV0163'ABOUT 0.15 MILE WEST ALONG U.S. HIGHWAY 301 AND 50 FROM THE
 HV0163'KENT ISLAND METHODIST CHURCH AT CHESTER, THENCE 0.55 MILE WEST
 HV0163'ALONG A BLACK TOP ROAD (OLD HIGHWAY 18), 0.55 MILE EAST ALONG
 HV0163'THE BLACK TOP ROAD FROM THE JUNCTION OF STATE HIGHWAY 18 LEADING
 HV0163'NORTH AT STEVENSVILLE, SET ON THE TOP OF THE NORTH END OF THE
 HV0163'EAST CONCRETE HEAD WALL FOR AN 18-INCH GALVANIZED PIPE CULVERT
 HV0163'UNDER THE DRIVEWAY TO A CEMETERY, ABOUT 100 FEET WEST OF THE
 HV0163'BRIDGE OVER COX CREEK, 31.9 FEET SOUTH OF THE CENTER LINE OF
 HV0163'THE ROAD, 9 FEET EAST OF THE CENTER LINE OF THE DRIVEWAY TO
 HV0163'CEMETERY.  AND ABOUT LEVEL WITH THE BLACK TOP ROAD.
 HV0163
 HV0163                          STATION RECOVERY (2000)
 HV0163
 HV0163'RECOVERY NOTE BY US POWER SQUADRON 2000
 HV0163'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7486 ***********************************************************************
 DH7486  DESIGNATION -  857 2955 D TIDAL
 DH7486  PID         -  DH7486
 DH7486  STATE/COUNTY-  MD/QUEEN ANNES
 DH7486  COUNTRY     -  US
 DH7486  USGS QUAD   -  LOVE POINT (2017)
 DH7486
 DH7486                         *CURRENT SURVEY CONTROL
 DH7486  ______________________________________________________________________
 DH7486* NAD 83(1986) POSITION- 39 01 57.     (N) 076 18 15.     (W)   SCALED
 DH7486* NAVD 88 ORTHO HEIGHT -     1.233 (meters)        4.05  (feet) ADJUSTED
 DH7486  ______________________________________________________________________
 DH7486  GEOID HEIGHT    -        -33.492 (meters)                     GEOID18
 DH7486  DYNAMIC HEIGHT  -          1.232 (meters)        4.04  (feet) COMP
 DH7486  MODELED GRAVITY -    980,090.7   (mgal)                       NAVD 88
 DH7486
 DH7486  VERT ORDER      -  SECOND    CLASS I
 DH7486
 DH7486.The horizontal coordinates were scaled from a map and have
 DH7486.an estimated accuracy of +/- 6 seconds.
 DH7486
 DH7486.The orthometric height was determined by differential leveling and
 DH7486.adjusted by the NATIONAL GEODETIC SURVEY
 DH7486.in January 2006.
 DH7486
 DH7486.No vertical observational check was made to the station.
 DH7486
 DH7486.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7486.GEOID18 height accuracy estimate available here.
 DH7486
 DH7486.Click photographs - Photos may exist for this station.
 DH7486
 DH7486.The dynamic height is computed by dividing the NAVD 88
 DH7486.geopotential number by the normal gravity value computed on the
 DH7486.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7486.degrees latitude (g = 980.6199 gals.).
 DH7486
 DH7486.The modeled gravity was interpolated from observed gravity values.
 DH7486
 DH7486;                    North         East    Units  Estimated Accuracy
 DH7486;SPC MD       -   151,840.      460,250.      MT  (+/- 180 meters Scaled)
 DH7486
 DH7486_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ871211(NAD 83)
 DH7486
 DH7486                          SUPERSEDED SURVEY CONTROL
 DH7486
 DH7486.No superseded survey control is available for this station.
 DH7486
 DH7486_MARKER: DJ = TIDAL STATION DISK
 DH7486_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DH7486_SP_SET: PAD
 DH7486_STAMPING: 2955 D 1995
 DH7486_MARK LOGO: NOS
 DH7486_MAGNETIC: N = NO MAGNETIC MATERIAL
 DH7486_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH7486_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7486+SATELLITE: SATELLITE OBSERVATIONS - November 28, 2005
 DH7486
 DH7486  HISTORY     - Date     Condition        Report By
 DH7486  HISTORY     - 1995     MONUMENTED       NOS
 DH7486  HISTORY     - 20051128 GOOD             NGS
 DH7486
 DH7486                          STATION DESCRIPTION
 DH7486
 DH7486'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (JRO)
 DH7486'THE MARK IS AT LANGENFELDER MARINE, INC. TO REACH FROM EXIT 37 OF
 DH7486'ROUTE 50, THE FIRST EXIT  EAST OF EAST END OF THE CHESAPEAKE BAY
 DH7486'BRIDGE, PROCEED 0.3 MI NE ALONG SR 8 TO STOP LIGHT  AND T-JUNCTION
 DH7486'WITH SR 18. CONTINUE BRIEFLY NE THEN NORTH 3.65 MILES TOTAL FROM THE
 DH7486'LIGHT  OR 3.95 MILES NORTHERLY FROM ROUTE 50 TO A RIGHT TURN ON PIER
 DH7486'AVENUE. CONTINUE ABOUT 0.5  MILE EASTERLY TO THE MARK ON THE LEFT.
 DH7486'
 DH7486'THE MARK IS SET IN THE NW CORNER OF A 32 FT BY 7 FT CONCRETE PAD FOR A
 DH7486'GAS PUMP,  SURROUNDED BY LOW MASONRY WALLS, 30.6 FT NORTH OF THE SOUTH
 DH7486'EDGE OF THE PAD, 0.5 FT  SOUTH AND EAST OF THE INNER SURFACE OF THE
 DH7486'NORTH AND WEST WALLS, ALSO 52.7 FT NW OF THE  NW CORNER OF THE
 DH7486'CONCRETE TRUCK SCALE PAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7485 ***********************************************************************
 DH7485  DESIGNATION -  857 2955 E TIDAL
 DH7485  PID         -  DH7485
 DH7485  STATE/COUNTY-  MD/QUEEN ANNES
 DH7485  COUNTRY     -  US
 DH7485  USGS QUAD   -  LOVE POINT (2017)
 DH7485
 DH7485                         *CURRENT SURVEY CONTROL
 DH7485  ______________________________________________________________________
 DH7485* NAD 83(1986) POSITION- 39 01 57.04   (N) 076 18 26.32   (W)   HD_HELD1
 DH7485* NAVD 88 ORTHO HEIGHT -     6.041 (meters)       19.82  (feet) ADJUSTED
 DH7485  ______________________________________________________________________
 DH7485  GEOID HEIGHT    -        -33.489 (meters)                     GEOID18
 DH7485  DYNAMIC HEIGHT  -          6.037 (meters)       19.81  (feet) COMP
 DH7485  MODELED GRAVITY -    980,090.5   (mgal)                       NAVD 88
 DH7485
 DH7485  VERT ORDER      -  SECOND    CLASS I
 DH7485
 DH7485.The horizontal coordinates were determined by differentially corrected
 DH7485.hand held GPS observations or other comparable positioning techniques
 DH7485.and have an estimated accuracy of +/- 3 meters.
 DH7485
 DH7485.The orthometric height was determined by differential leveling and
 DH7485.adjusted by the NATIONAL GEODETIC SURVEY
 DH7485.in January 2006.
 DH7485
 DH7485.No vertical observational check was made to the station.
 DH7485
 DH7485.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7485.GEOID18 height accuracy estimate available here.
 DH7485
 DH7485.Click photographs - Photos may exist for this station.
 DH7485
 DH7485.The dynamic height is computed by dividing the NAVD 88
 DH7485.geopotential number by the normal gravity value computed on the
 DH7485.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7485.degrees latitude (g = 980.6199 gals.).
 DH7485
 DH7485.The modeled gravity was interpolated from observed gravity values.
 DH7485
 DH7485;                    North         East    Units  Estimated Accuracy
 DH7485;SPC MD       -   151,842.8     459,974.3     MT  (+/- 3 meters HH1 GPS) 
 DH7485
 DH7485_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8684721197(NAD 83)
 DH7485
 DH7485                          SUPERSEDED SURVEY CONTROL
 DH7485
 DH7485.No superseded survey control is available for this station.
 DH7485
 DH7485_MARKER: DJ = TIDAL STATION DISK
 DH7485_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DH7485_SP_SET: PAD
 DH7485_STAMPING: 2955 E 1995
 DH7485_MARK LOGO: NOS
 DH7485_MAGNETIC: N = NO MAGNETIC MATERIAL
 DH7485_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH7485_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7485+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2021
 DH7485
 DH7485  HISTORY     - Date     Condition        Report By
 DH7485  HISTORY     - 1995     MONUMENTED       NOS
 DH7485  HISTORY     - 20051128 GOOD             NGS
 DH7485  HISTORY     - 20210208 GOOD             MDSHA
 DH7485
 DH7485                          STATION DESCRIPTION
 DH7485
 DH7485'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (JRO)
 DH7485'THE MARK IS AT LOVE POINT ON PROPERTY PRESUMABLY OF LANGENFELDER
 DH7485'MARINE. TO REACH  FROM EXIT 37 OF US ROUTE 50 (FIRST EXIT EAST OF EAST
 DH7485'END OF CHESAPEAKE BAY BRIDGE) PROCEED  3.95 MILES NE AND NORTH ALONG
 DH7485'STATE ROUTE 8 AND THEN SR 18 TO PIER AVENUE. TURN RIGHT  AND PROCEED
 DH7485'0.30 MILE EAST TO THE SECOND UTILITY POLE (ON THE RIGHT) EAST OF
 DH7485'LANGENFELDER  MARINE SIGN AND THE MARK ON THE RIGHT. PIER AVENUE IS
 DH7485'3.6 MILES NE AND THEN NORTH ALONG  SR 18 FROM THE STOPLIGHT AT
 DH7485'T-JUNCTION OF SR 8 AND SR 18 IN STEVENSVILLE. THE POLE IS  NUMBER
 DH7485'26909 OVER 17650 OVER 11D.
 DH7485'
 DH7485'PARK AT THE UTILITY POLE AND THEN WALK SOUTHERLY DOWN THE SLOPE,
 DH7485'ACROSS FLAT AREA AND  BACK UP SLOPE THROUGH TREE AND BRUSH LINE TO THE
 DH7485'MARK EPOXIED IN A CONCRETE PAD IN THE  MIDDLE OF A CLEARING WHICH MAY
 DH7485'HAVE BEEN THE ROUTE OF THE OLD RAILROAD. THE PAD IS  ROUGHLY 2 FT
 DH7485'SQUARE AND IS ONE OF SEVERAL IN APPROXIMATELY 6 FT SQUARE AREA. IT WAS
 DH7485'PROBED TO BE ONLY 12-14 INCHES DEEP.
 DH7485'
 DH7485'THE MARK IS 120 FT--36.50 M-- SOUTH OF THE POLE, ROUGHLY 79 FT--24.7
 DH7485'M--WESTERLY OF ANGLE  POINT IN AN OYSTER SHELL TRACK ROAD, 76.0
 DH7485'FT--23.20 M--ENE OF 18 INCH PINE TREE, 61.0 FT--18.60  M-- EAST OF
 DH7485'24-INCH MULTI-TRUNK HARDWOOD TREE POSSIBLY CHERRY, 50.3 FT--15.20
 DH7485'M--SW OF  ORANGE WITNESS POST IN TREE-BRUSH LINE, 47.0 FT--14.3
 DH7485'M--SOUTH OF 1 INCH CABLE RUNNING E-W  THROUGH THE TREE ROW, ROUGHLY 40
 DH7485'FT--12.5 M--NORTH OF NORTH LINE OF DIFFERENT  TREE-BRUSH AREA (TO
 DH7485'SOUTH OF CLEARING).
 DH7485'
 DH7485'COOPS DESCRIPTION--THE BENCH MARK IS A DISK SET IN A 0.6 M X 0.6 M (2
 DH7485'FT X 2 FT) CONCRETE PAD IN  THE PASTURE ABOVE THE OLD RAILROAD RIGHT
 DH7485'OF WAY, 42.21 M (138.5 FT) SOUTH OF THE  CENTERLINE OF THE ENTRANCE
 DH7485'ROAD TO THE LANGENFELDER PROPERTY, 18.53 M (60.8 FT) ENE OF A  WILD
 DH7485'CHERRY TREE, AND 9.14 M (30.0 FT) SOUTH OF THE TREELINE RUNNING ALONG
 DH7485'THE BLUFF  BORDERING THE NORTH EDGE OF THE PASTURE.  MARK IS PROBABLY
 DH7485'UNRELIABLE BECAUSE OF  SURFACE MOVEMENT.
 DH7485
 DH7485                          STATION RECOVERY (2021)
 DH7485
 DH7485'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (MRA)
 DH7485'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0544 ***********************************************************************
 JV0544  DESIGNATION -  857 2955 TIDAL 1
 JV0544  PID         -  JV0544
 JV0544  STATE/COUNTY-  MD/QUEEN ANNES
 JV0544  COUNTRY     -  US
 JV0544  USGS QUAD   -  LOVE POINT (2017)
 JV0544
 JV0544                         *CURRENT SURVEY CONTROL
 JV0544  ______________________________________________________________________
 JV0544* NAD 83(1986) POSITION- 39 01 56.     (N) 076 18 19.     (W)   SCALED
 JV0544* NAVD 88 ORTHO HEIGHT -     1.131 (meters)        3.71  (feet) ADJUSTED
 JV0544  ______________________________________________________________________
 JV0544  GEOID HEIGHT    -        -33.491 (meters)                     GEOID18
 JV0544  DYNAMIC HEIGHT  -          1.130 (meters)        3.71  (feet) COMP
 JV0544  MODELED GRAVITY -    980,090.7   (mgal)                       NAVD 88
 JV0544
 JV0544  VERT ORDER      -  SECOND    CLASS 0
 JV0544
 JV0544.The horizontal coordinates were scaled from a map and have
 JV0544.an estimated accuracy of +/- 6 seconds.
 JV0544
 JV0544.The orthometric height was determined by differential leveling and
 JV0544.adjusted by the NATIONAL GEODETIC SURVEY
 JV0544.in June 1991.
 JV0544
 JV0544.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0544.GEOID18 height accuracy estimate available here.
 JV0544
 JV0544.Click photographs - Photos may exist for this station.
 JV0544
 JV0544.The dynamic height is computed by dividing the NAVD 88
 JV0544.geopotential number by the normal gravity value computed on the
 JV0544.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0544.degrees latitude (g = 980.6199 gals.).
 JV0544
 JV0544.The modeled gravity was interpolated from observed gravity values.
 JV0544
 JV0544;                    North         East    Units  Estimated Accuracy
 JV0544;SPC MD       -   151,810.      460,150.      MT  (+/- 180 meters Scaled)
 JV0544
 JV0544_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ870211(NAD 83)
 JV0544
 JV0544                          SUPERSEDED SURVEY CONTROL
 JV0544
 JV0544  NGVD 29 (11/26/84)    1.367  (m)            4.48   (f) ADJUSTED    2 0
 JV0544
 JV0544.Superseded values are not recommended for survey control.
 JV0544
 JV0544.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0544.See file dsdata.pdf to determine how the superseded data were derived.
 JV0544
 JV0544_MARKER: DB = BENCH MARK DISK
 JV0544_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0544_SP_SET: BULKHEAD
 JV0544_STAMPING: 1 1940
 JV0544_MARK LOGO: CGS
 JV0544_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0544
 JV0544  HISTORY     - Date     Condition        Report By
 JV0544  HISTORY     - 1940     MONUMENTED       CGS
 JV0544  HISTORY     - 1942     GOOD             CGS
 JV0544  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0544
 JV0544                          STATION DESCRIPTION
 JV0544
 JV0544'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0544'4 MI N FROM STEVENSVILLE.
 JV0544'THIS MARK IS AT LOVE POINT, ABOUT 4.0 MILES NORTH FROM STEVENSVILLE,
 JV0544'SET IN THE NORTH EDGE OF THE CONCRETE BULKHEAD, ALONG THE
 JV0544'NORTHSIDE OF THE RAILROAD PIER, OPPOSITE THE 4TH TELEPHONE POLE,
 JV0544'FROM THE OUTER END OF THE PIER, 30.3 FEET NORTH OF THE CENTER
 JV0544'LINE OF THE ROAD, 57.5 FEET NORTH OF THE NORTH RAIL OF THE
 JV0544'RAILROAD.  A STANDARD DISK.
 JV0544
 JV0544                          STATION RECOVERY (1971)
 JV0544
 JV0544'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0544'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0545 ***********************************************************************
 JV0545  DESIGNATION -  857 2955 TIDAL 2
 JV0545  PID         -  JV0545
 JV0545  STATE/COUNTY-  MD/QUEEN ANNES
 JV0545  COUNTRY     -  US
 JV0545  USGS QUAD   -  LOVE POINT (2017)
 JV0545
 JV0545                         *CURRENT SURVEY CONTROL
 JV0545  ______________________________________________________________________
 JV0545* NAD 83(1986) POSITION- 39 01 58.     (N) 076 18 19.     (W)   SCALED
 JV0545* NAVD 88 ORTHO HEIGHT -     1.318 (meters)        4.32  (feet) ADJUSTED
 JV0545  ______________________________________________________________________
 JV0545  GEOID HEIGHT    -        -33.490 (meters)                     GEOID18
 JV0545  DYNAMIC HEIGHT  -          1.318 (meters)        4.32  (feet) COMP
 JV0545  MODELED GRAVITY -    980,090.7   (mgal)                       NAVD 88
 JV0545
 JV0545  VERT ORDER      -  SECOND    CLASS 0
 JV0545
 JV0545.The horizontal coordinates were scaled from a map and have
 JV0545.an estimated accuracy of +/- 6 seconds.
 JV0545
 JV0545.The orthometric height was determined by differential leveling and
 JV0545.adjusted by the NATIONAL GEODETIC SURVEY
 JV0545.in June 1991.
 JV0545
 JV0545.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0545.GEOID18 height accuracy estimate available here.
 JV0545
 JV0545.Click photographs - Photos may exist for this station.
 JV0545
 JV0545.The dynamic height is computed by dividing the NAVD 88
 JV0545.geopotential number by the normal gravity value computed on the
 JV0545.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0545.degrees latitude (g = 980.6199 gals.).
 JV0545
 JV0545.The modeled gravity was interpolated from observed gravity values.
 JV0545
 JV0545;                    North         East    Units  Estimated Accuracy
 JV0545;SPC MD       -   151,870.      460,150.      MT  (+/- 180 meters Scaled)
 JV0545
 JV0545_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ870212(NAD 83)
 JV0545
 JV0545                          SUPERSEDED SURVEY CONTROL
 JV0545
 JV0545  NGVD 29 (11/26/84)    1.555  (m)            5.10   (f) ADJUSTED    2 0
 JV0545
 JV0545.Superseded values are not recommended for survey control.
 JV0545
 JV0545.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0545.See file dsdata.pdf to determine how the superseded data were derived.
 JV0545
 JV0545_MARKER: DB = BENCH MARK DISK
 JV0545_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0545_SP_SET: BULK HEAD
 JV0545_STAMPING: 2 1940
 JV0545_MARK LOGO: CGS
 JV0545_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0545
 JV0545  HISTORY     - Date     Condition        Report By
 JV0545  HISTORY     - 1940     MONUMENTED       CGS
 JV0545  HISTORY     - 1942     GOOD             CGS
 JV0545  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0545
 JV0545                          STATION DESCRIPTION
 JV0545
 JV0545'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0545'4 MI N FROM STEVENSVILLE.
 JV0545'THIS MARK IS ABOUT 4.0 MILES NORTH OF THE POST OFFICE AT
 JV0545'STEVENSVILLE, AT LOVE POINT, SET IN THE NORTH CONCRETE WALL
 JV0545'EXTENSION OF THE BULKHEAD, BETWEEN THE 6 AND 7TH POLE FROM THE
 JV0545'END OF THE PIER, 23.7 FEET SOUTH OF A GARAGE, 12.6 FEET NORTH OF
 JV0545'THE CENTER LINE OF THE ROAD.  A STANDARD DISK.
 JV0545
 JV0545                          STATION RECOVERY (1971)
 JV0545
 JV0545'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0545'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0543 ***********************************************************************
 JV0543  DESIGNATION -  857 2955 TIDAL 3
 JV0543  PID         -  JV0543
 JV0543  STATE/COUNTY-  MD/QUEEN ANNES
 JV0543  COUNTRY     -  US
 JV0543  USGS QUAD   -  LOVE POINT (2017)
 JV0543
 JV0543                         *CURRENT SURVEY CONTROL
 JV0543  ______________________________________________________________________
 JV0543* NAD 83(1986) POSITION- 39 01 57.     (N) 076 18 14.     (W)   SCALED
 JV0543* NAVD 88 ORTHO HEIGHT -     1.284 (meters)        4.21  (feet) ADJUSTED
 JV0543  ______________________________________________________________________
 JV0543  GEOID HEIGHT    -        -33.492 (meters)                     GEOID18
 JV0543  DYNAMIC HEIGHT  -          1.283 (meters)        4.21  (feet) COMP
 JV0543  MODELED GRAVITY -    980,090.8   (mgal)                       NAVD 88
 JV0543
 JV0543  VERT ORDER      -  SECOND    CLASS 0
 JV0543
 JV0543.The horizontal coordinates were scaled from a map and have
 JV0543.an estimated accuracy of +/- 6 seconds.
 JV0543
 JV0543.The orthometric height was determined by differential leveling and
 JV0543.adjusted by the NATIONAL GEODETIC SURVEY
 JV0543.in June 1991.
 JV0543
 JV0543.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0543.GEOID18 height accuracy estimate available here.
 JV0543
 JV0543.Click photographs - Photos may exist for this station.
 JV0543
 JV0543.The dynamic height is computed by dividing the NAVD 88
 JV0543.geopotential number by the normal gravity value computed on the
 JV0543.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0543.degrees latitude (g = 980.6199 gals.).
 JV0543
 JV0543.The modeled gravity was interpolated from observed gravity values.
 JV0543
 JV0543;                    North         East    Units  Estimated Accuracy
 JV0543;SPC MD       -   151,840.      460,270.      MT  (+/- 180 meters Scaled)
 JV0543
 JV0543_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ871211(NAD 83)
 JV0543
 JV0543                          SUPERSEDED SURVEY CONTROL
 JV0543
 JV0543  NGVD 29 (11/26/84)    1.520  (m)            4.99   (f) ADJUSTED    2 0
 JV0543
 JV0543.Superseded values are not recommended for survey control.
 JV0543
 JV0543.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0543.See file dsdata.pdf to determine how the superseded data were derived.
 JV0543
 JV0543_MARKER: DB = BENCH MARK DISK
 JV0543_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0543_SP_SET: BULK HEAD
 JV0543_STAMPING: 3 1940
 JV0543_MARK LOGO: CGS
 JV0543_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0543+STABILITY: SURFACE MOTION
 JV0543
 JV0543  HISTORY     - Date     Condition        Report By
 JV0543  HISTORY     - 1940     MONUMENTED       CGS
 JV0543  HISTORY     - 1942     GOOD             CGS
 JV0543  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0543
 JV0543                          STATION DESCRIPTION
 JV0543
 JV0543'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0543'4 MI N FROM STEVENSVILLE.
 JV0543'THIS MARK IS ABOUT 4.0 MILES NORTH FROM THE POST OFFICE AT
 JV0543'STEVENSVILLE, AT LOVE POINT, SET IN THE TOP OF THE SOUTH CONCRETE
 JV0543'BULKHEAD, 27.3 FEET SOUTH OF SOUTH RAIL OF THE RAILROAD, JUST
 JV0543'ACROSS FROM NUMBER 2, ABOUT 0.1 OF A MILE FROM THE END OF
 JV0543'THE PIER, A STANDARD DISK.
 JV0543
 JV0543                          STATION RECOVERY (1971)
 JV0543
 JV0543'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0543'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0542 ***********************************************************************
 JV0542  DESIGNATION -  857 2955 TIDAL 4
 JV0542  PID         -  JV0542
 JV0542  STATE/COUNTY-  MD/QUEEN ANNES
 JV0542  COUNTRY     -  US
 JV0542  USGS QUAD   -  LOVE POINT (2017)
 JV0542
 JV0542                         *CURRENT SURVEY CONTROL
 JV0542  ______________________________________________________________________
 JV0542* NAD 83(1986) POSITION- 39 01 57.     (N) 076 18 15.     (W)   SCALED
 JV0542* NAVD 88 ORTHO HEIGHT -     1.009 (meters)        3.31  (feet) ADJUSTED
 JV0542  ______________________________________________________________________
 JV0542  GEOID HEIGHT    -        -33.492 (meters)                     GEOID18
 JV0542  DYNAMIC HEIGHT  -          1.009 (meters)        3.31  (feet) COMP
 JV0542  MODELED GRAVITY -    980,090.8   (mgal)                       NAVD 88
 JV0542
 JV0542  VERT ORDER      -  FIRST     CLASS II
 JV0542
 JV0542.The horizontal coordinates were scaled from a map and have
 JV0542.an estimated accuracy of +/- 6 seconds.
 JV0542
 JV0542.The orthometric height was determined by differential leveling and
 JV0542.adjusted by the NATIONAL GEODETIC SURVEY
 JV0542.in June 1991.
 JV0542
 JV0542.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0542.GEOID18 height accuracy estimate available here.
 JV0542
 JV0542.Click photographs - Photos may exist for this station.
 JV0542
 JV0542.The dynamic height is computed by dividing the NAVD 88
 JV0542.geopotential number by the normal gravity value computed on the
 JV0542.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0542.degrees latitude (g = 980.6199 gals.).
 JV0542
 JV0542.The modeled gravity was interpolated from observed gravity values.
 JV0542
 JV0542;                    North         East    Units  Estimated Accuracy
 JV0542;SPC MD       -   151,840.      460,250.      MT  (+/- 180 meters Scaled)
 JV0542
 JV0542_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ871211(NAD 83)
 JV0542
 JV0542                          SUPERSEDED SURVEY CONTROL
 JV0542
 JV0542  NGVD 29 (11/26/84)    1.246  (m)            4.09   (f) ADJUSTED    1 2
 JV0542
 JV0542.Superseded values are not recommended for survey control.
 JV0542
 JV0542.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0542.See file dsdata.pdf to determine how the superseded data were derived.
 JV0542
 JV0542_MARKER: DB = BENCH MARK DISK
 JV0542_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0542_STAMPING: NO 4 1971
 JV0542_MARK LOGO: CGS
 JV0542_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0542+STABILITY: SURFACE MOTION
 JV0542
 JV0542  HISTORY     - Date     Condition        Report By
 JV0542  HISTORY     - 1971     MONUMENTED       NOS
 JV0542  HISTORY     - 19950923 GOOD             USPSQD
 JV0542  HISTORY     - 20010220 MARK NOT FOUND   USPSQD
 JV0542
 JV0542                          STATION DESCRIPTION
 JV0542
 JV0542'DESCRIBED BY NATIONAL OCEAN SERVICE 1971
 JV0542'4.1 MI NE FROM STEVENSVILLE.
 JV0542'ABOUT 3.65 MILES NORTHEAST ALONG STATE HIGHWAY 18 FROM THE POST
 JV0542'OFFICE AT STEVENSVILLE, THENCE 0.45 MILE EAST ALONG PIER AVENUE,
 JV0542'ON THE PROPERTY OF THE C.J. LANGENFELD AND SONS INC, (LOVE POINT
 JV0542'TERMINAL), 130.3 FEET NORTH OF AND ACROSS THE BLACK TOP ROAD FROM
 JV0542'THE BULKHEAD, 61 1/2 FEET NORTHEAST OF POWER LINE POLE NO. 131
 JV0542'WHICH SUPPORTS A LIGHT, 51.6 FEET NORTH OF THE CENTER LINE OF
 JV0542'THE ROAD, 22.4 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE
 JV0542'OFFICE BUILDING, 3.2 FEET NORTHEAST OF THE NORTHEAST EDGE OF A
 JV0542'ROUND CONCRETE BASE FOR A GAS PUMP, 2.8 FEET EAST OF A POPLAR
 JV0542'TREE WITH A WITNESS SIGN ATTACHED, ABOUT LEVEL WITH THE ROAD
 JV0542'AND SET IN THE TOP OF A CONCRETE POST THAT IS 1 INCH BELOW THE
 JV0542'LEVEL OF THE GROUND.
 JV0542
 JV0542                          STATION RECOVERY (1995)
 JV0542
 JV0542'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0542'RECOVERED IN GOOD CONDITION.
 JV0542
 JV0542                          STATION RECOVERY (2001)
 JV0542
 JV0542'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKW)
 JV0542'EMPLOYEE REPORTS THAT THE MARK WAS DESTROYED AS A RESULT OF FUEL TANK
 JV0542'REMOVAL AND REPLACEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0541 ***********************************************************************
 JV0541  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0541  DESIGNATION -  857 2955 TIDAL 5
 JV0541  PID         -  JV0541
 JV0541  STATE/COUNTY-  MD/QUEEN ANNES
 JV0541  COUNTRY     -  US
 JV0541  USGS QUAD   -  LOVE POINT (2017)
 JV0541
 JV0541                         *CURRENT SURVEY CONTROL
 JV0541  ______________________________________________________________________
 JV0541* NAD 83(2011) POSITION- 39 01 56.94223(N) 076 18 17.55691(W)   ADJUSTED
 JV0541* NAD 83(2011) ELLIP HT-   -32.122 (meters)        (02/02/22)   ADJUSTED
 JV0541* NAD 83(2011) EPOCH   -  2010.00
 JV0541* NAVD 88 ORTHO HEIGHT -     1.384 (meters)        4.54  (feet) ADJUSTED
 JV0541  ______________________________________________________________________
 JV0541  GEOID HEIGHT    -        -33.491 (meters)                     GEOID18
 JV0541  NAD 83(2011) X  -  1,174,551.384 (meters)                     COMP
 JV0541  NAD 83(2011) Y  - -4,819,986.381 (meters)                     COMP
 JV0541  NAD 83(2011) Z  -  3,995,098.718 (meters)                     COMP
 JV0541  LAPLACE CORR    -         -2.05  (seconds)                    DEFLEC18
 JV0541  DYNAMIC HEIGHT  -          1.383 (meters)        4.54  (feet) COMP
 JV0541  MODELED GRAVITY -    980,090.7   (mgal)                       NAVD 88
 JV0541
 JV0541  VERT ORDER      -  SECOND    CLASS I
 JV0541
 JV0541  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0541  Standards:
 JV0541         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0541            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0541  -------------------------------------------------------------------
 JV0541  NETWORK    0.73   1.71           0.32   0.27   0.87     -0.13987399
 JV0541  -------------------------------------------------------------------
 JV0541  Click here for local accuracies and other accuracy information.
 JV0541
 JV0541.The horizontal coordinates were established by GPS observations
 JV0541.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 JV0541
 JV0541.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0541.been affixed to the stable North American tectonic plate. See 
 JV0541.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0541
 JV0541.The horizontal coordinates are valid at the epoch date displayed above
 JV0541.which is a decimal equivalence of Year/Month/Day.
 JV0541
 JV0541.The orthometric height was determined by differential leveling and
 JV0541.adjusted by the NATIONAL GEODETIC SURVEY
 JV0541.in January 2006.
 JV0541
 JV0541.No vertical observational check was made to the station.
 JV0541
 JV0541.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0541.GEOID18 height accuracy estimate available here.
 JV0541
 JV0541.This Tidal Bench Mark is designated as VM 3085
 JV0541.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0541
 JV0541.Click photographs - Photos may exist for this station.
 JV0541
 JV0541.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0541
 JV0541.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0541
 JV0541.The ellipsoidal height was determined by GPS observations
 JV0541.and is referenced to NAD 83.
 JV0541
 JV0541.The dynamic height is computed by dividing the NAVD 88
 JV0541.geopotential number by the normal gravity value computed on the
 JV0541.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0541.degrees latitude (g = 980.6199 gals.).
 JV0541
 JV0541.The modeled gravity was interpolated from observed gravity values.
 JV0541
 JV0541. The following values were computed from the NAD 83(2011) position.
 JV0541
 JV0541;                    North         East     Units Scale Factor Converg.
 JV0541;SPC MD       -   151,841.413   460,185.094   MT  0.99995357   +0 26 10.6
 JV0541;SPC MD       -   498,166.37  1,509,790.60   sFT  0.99995357   +0 26 10.6
 JV0541;UTM  18      - 4,321,191.381   387,058.061   MT  0.99975707   -0 49 18.7
 JV0541
 JV0541!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0541!SPC MD       -   1.00000504  x   0.99995357  =   0.99995861
 JV0541!UTM  18      -   1.00000504  x   0.99975707  =   0.99976211
 JV0541
 JV0541_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8705821191(NAD 83)
 JV0541
 JV0541                          SUPERSEDED SURVEY CONTROL
 JV0541
 JV0541  NAVD 88 (06/15/91)    1.525  (m)            5.00   (f) SUPERSEDED  1 2
 JV0541  NGVD 29 (11/26/84)    1.762  (m)            5.78   (f) ADJUSTED    1 2
 JV0541
 JV0541.Superseded values are not recommended for survey control.
 JV0541
 JV0541.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0541.See file dsdata.pdf to determine how the superseded data were derived.
 JV0541
 JV0541_MARKER: DB = BENCH MARK DISK
 JV0541_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0541_STAMPING: NO 5 1971
 JV0541_MARK LOGO: CGS
 JV0541_PROJECTION: FLUSH
 JV0541_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0541_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0541+STABILITY: SURFACE MOTION
 JV0541_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0541+SATELLITE: SATELLITE OBSERVATIONS - March 08, 2021
 JV0541
 JV0541  HISTORY     - Date     Condition        Report By
 JV0541  HISTORY     - 1971     MONUMENTED       NOS
 JV0541  HISTORY     - 1980     GOOD             LOCSUR
 JV0541  HISTORY     - 19950923 GOOD             USPSQD
 JV0541  HISTORY     - 20010220 GOOD             USPSQD
 JV0541  HISTORY     - 20031113 GOOD             URS
 JV0541  HISTORY     - 20051122 GOOD             NGS
 JV0541  HISTORY     - 20200325 GOOD             NGS
 JV0541  HISTORY     - 20210308 GOOD             MDSHA
 JV0541
 JV0541                          STATION DESCRIPTION
 JV0541
 JV0541'DESCRIBED BY NATIONAL OCEAN SERVICE 1971
 JV0541'4 MI NE FROM STEVENSVILLE.
 JV0541'ABOUT 3.65 MILES NORTH ALONG STATE HIGHWAY 18 FROM THE POST OFFICE
 JV0541'AT STEVENSVILLE, THENCE 0.4 MILE EAST ALONG PIER AVENUE, ON THE
 JV0541'PROPERTY OF C.J. LANGENFELD AND SONS INC (LOVE POINT TERMINAL),
 JV0541'0.05 MILE EAST OF THE GATE AT THE ENTRANCE TO THE TERMINAL, 324
 JV0541'FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE OFFICE BUILDING,
 JV0541'91.8 FEET NORTH OF AND ACROSS THE BLACK TOP ROAD FROM A BULKHEAD,
 JV0541'50 1/2 FEET EAST OF POWER LINE POLE NO. 129, 16 1/2 FEET NORTH OF
 JV0541'THE CENTER LINE OF A BLACK TOP ROAD, 231 FEET NORTHEAST OF AND
 JV0541'ACROSS THE ROAD FROM TIDAL 6 DESCRIBED, 302 FEET SOUTHWEST OF
 JV0541'TIDAL 4 DESCRIBED, 1.7 FEET SOUTHWEST OF A METAL WITNESS POST,
 JV0541'0.8 FOOT SOUTH OF A WOODEN WITNESS POST, ABOUT LEVEL WITH THE
 JV0541'ROAD AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV0541
 JV0541                          STATION RECOVERY (1980)
 JV0541
 JV0541'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1980
 JV0541'BLACK TOP ROADS DESCRIBED ARE NOW PAVED WITH CRUSHED OYSTER SHELL.
 JV0541'BOTH WITNESS POSTS NO LONGER EXIST NOW ABOUT 1/2-3/4 INCHES BELOW
 JV0541'GROUND.
 JV0541
 JV0541                          STATION RECOVERY (1995)
 JV0541
 JV0541'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0541'RECOVERED IN GOOD CONDITION.
 JV0541
 JV0541                          STATION RECOVERY (2001)
 JV0541
 JV0541'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKW)
 JV0541'MARK IS NOW 6 INCHES BELOW SURFACE BY A SLAG SIDE ROAD TO THE OYSTER
 JV0541'SHELL ROAD.  THE MARK IS 50.1 FT E OF POLE DPL 26975/17639, 99.6 W OF
 JV0541'POLE DPL 26989/17636 AND 2.3 FT. N OF A LINE BETWEEN THE POWER POLES.
 JV0541
 JV0541                          STATION RECOVERY (2003)
 JV0541
 JV0541'RECOVERY NOTE BY URS COMPANY 2003 (EN)
 JV0541'RECOVERED IN GOOD CONDITION.
 JV0541
 JV0541                          STATION RECOVERY (2005)
 JV0541
 JV0541'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (JRO)
 JV0541'THE MARK IS AT LANGENFELDER MARINE, INC.
 JV0541'
 JV0541'TO REACH FROM EXIT 37 OF ROUTE 50, THE FIRST EXIT  EAST OF EAST END OF
 JV0541'THE CHESAPEAKE BAY BRIDGE, PROCEED 0.3 MI NE ALONG SR 8 TO STOP LIGHT
 JV0541'AND T-JUNCTION WITH SR 18.  CONTINUE BRIEFLY NE THEN NORTH 3.65 MILES
 JV0541'TOTAL FROM THE LIGHT  OR 3.95 MILES NORTHERLY FROM ROUTE 50 TO A RIGHT
 JV0541'TURN ON PIER AVENUE.  CONTINUE ABOUT 0.4  MILE EASTERLY TO THE MARK ON
 JV0541'THE LEFT.
 JV0541'
 JV0541'IT IS AS DESCRIBED IN 2001 50.1 FT EAST OF POLE DPL26975 OVER 17639,
 JV0541'99.6 FT WEST OF POLE  DPL26989 OVER 17636, AND 2.3 FT NORTH OF THE
 JV0541'LINE BETWEEN THE POLES, 6 OR MORE INCHES  BELOW SURFACE OF THE OYSTER
 JV0541'SHELL-GRAVEL ROAD.  ALSO 92 FT NORTHERLY FROM THE OLD  EAST-WEST
 JV0541'CONCRETE BULKHEAD THAT IS NOW SOMEWHAT HARD TO SEE.
 JV0541'
 JV0541'AN ATTEMPT WAS MADE TO IMPROVE ACCESS TO THE MARK IN TWO STEPS.  A
 JV0541'24-INCH SQUARE STEEL  PLATE WAS PLACED ABOVE IT, COVERED BY ABOUT TWO
 JV0541'INCHES OF SAND AND THE GRAVEL-OYSTER  SHELL ROADWAY TO PREVENT
 JV0541'SHIFTING WHEN VEHICLES DRIVE OVER THE PLATE. THEN A USED  LOGO CAP ON
 JV0541'A SHORT PVC PIPE WAS PLACED AROUND THE DISK, HELD IN PLACE BY GRAVEL.
 JV0541'IGNORE  THE STAMPING ON THE LOGO CAP. CARE SHOULD BE TAKEN TO REPLACE
 JV0541'THE PLATE SLIGHTLY  BURIED IN THE GRAVEL BUT ALSO AN INCH OR MORE
 JV0541'ABOVE THE LOGO CAP. IN THIS WAY THE PLATE  SHOULD NOT SHIFT WHEN
 JV0541'DRIVEN OVER, NOR PRESS DOWN ON THE MONUMENT.
 JV0541
 JV0541                          STATION RECOVERY (2020)
 JV0541
 JV0541'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (RWA)
 JV0541'RECOVERED IN GOOD CONDITION.
 JV0541
 JV0541                          STATION RECOVERY (2021)
 JV0541
 JV0541'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV0541'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0540 ***********************************************************************
 JV0540  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0540  DESIGNATION -  857 2955 TIDAL 6
 JV0540  PID         -  JV0540
 JV0540  STATE/COUNTY-  MD/QUEEN ANNES
 JV0540  COUNTRY     -  US
 JV0540  USGS QUAD   -  LOVE POINT (2017)
 JV0540
 JV0540                         *CURRENT SURVEY CONTROL
 JV0540  ______________________________________________________________________
 JV0540* NAD 83(1986) POSITION- 39 01 56.     (N) 076 18 22.     (W)   SCALED
 JV0540* NAVD 88 ORTHO HEIGHT -     0.842 (meters)        2.76  (feet) ADJUSTED
 JV0540  ______________________________________________________________________
 JV0540  GEOID HEIGHT    -        -33.491 (meters)                     GEOID18
 JV0540  DYNAMIC HEIGHT  -          0.842 (meters)        2.76  (feet) COMP
 JV0540  MODELED GRAVITY -    980,090.6   (mgal)                       NAVD 88
 JV0540
 JV0540  VERT ORDER      -  FIRST     CLASS II
 JV0540
 JV0540.The horizontal coordinates were scaled from a map and have
 JV0540.an estimated accuracy of +/- 6 seconds.
 JV0540
 JV0540.The orthometric height was determined by differential leveling and
 JV0540.adjusted by the NATIONAL GEODETIC SURVEY
 JV0540.in June 1991.
 JV0540
 JV0540.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0540.GEOID18 height accuracy estimate available here.
 JV0540
 JV0540.This Tidal Bench Mark is designated as VM 3086
 JV0540.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0540
 JV0540.Click photographs - Photos may exist for this station.
 JV0540
 JV0540.The dynamic height is computed by dividing the NAVD 88
 JV0540.geopotential number by the normal gravity value computed on the
 JV0540.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0540.degrees latitude (g = 980.6199 gals.).
 JV0540
 JV0540.The modeled gravity was interpolated from observed gravity values.
 JV0540
 JV0540;                    North         East    Units  Estimated Accuracy
 JV0540;SPC MD       -   151,810.      460,080.      MT  (+/- 180 meters Scaled)
 JV0540
 JV0540_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ869211(NAD 83)
 JV0540
 JV0540                          SUPERSEDED SURVEY CONTROL
 JV0540
 JV0540  NGVD 29 (11/26/84)    1.079  (m)            3.54   (f) ADJUSTED    1 2
 JV0540
 JV0540.Superseded values are not recommended for survey control.
 JV0540
 JV0540.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0540.See file dsdata.pdf to determine how the superseded data were derived.
 JV0540
 JV0540_MARKER: DB = BENCH MARK DISK
 JV0540_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0540_SP_SET: SEAWALL
 JV0540_STAMPING: NO 6 1971
 JV0540_MARK LOGO: CGS
 JV0540_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0540
 JV0540  HISTORY     - Date     Condition        Report By
 JV0540  HISTORY     - 1971     MONUMENTED       NOS
 JV0540
 JV0540                          STATION DESCRIPTION
 JV0540
 JV0540'DESCRIBED BY NATIONAL OCEAN SERVICE 1971
 JV0540'4 MI NORTHEAST FROM STEVENSVILLE.  ABOUT 3.65 MILES NORTH ALONG STATE
 JV0540'HIGHWAY 18 FROM THE POST OFFICE AT STEVENSVILLE, THENCE 0.35 MILE EAST
 JV0540'ALONG PIER AVENUE, NEAR THE GATE AT THE ENTRANCE TO C.J. LANGERFELD
 JV0540'AND SONS INC. (LOVE POINT TERMINAL).
 JV0540'
 JV0540'IT IS SET ON THE TOP OF THE WEST END OF THE EAST-WEST CONCRETE SEA
 JV0540'WALL WHICH PROJECTS 10 INCHES ABOVE THE LEVEL OF THE GROUND, 98.7 FEET
 JV0540'SOUTHEAST OF THE SOUTHWEST STEEL FENCE CORNER WHICH IS JUST SOUTH OF A
 JV0540'STEEL GATE, 70 FEET SOUTH OF THE CENTERLINE OF THE ROAD, 48.5 FEET
 JV0540'NORTHEAST OF THE NORTHEAST PORCH CORNER FOR A 1 1/2 STORY HOUSE, 41.6
 JV0540'FEET SOUTH OF A STEEL FENCE ALONG THE SOUTH SIDE OF THE ROAD, 40.8
 JV0540'FEET WEST OF THE SOUTH END OF A NORTH-SOUTH FENCE AT THE WATERS EDGE,
 JV0540'231 FEET SOUTHWEST OF AND ACROSS THE ROAD FROM TIDAL 5, DESCRIBED, AND
 JV0540'ABOUT 2 FEET ABOVE THE LEVEL OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6513 ***********************************************************************
 JV6513  DESIGNATION -  857 3006 TIDAL 5
 JV6513  PID         -  JV6513
 JV6513  STATE/COUNTY-  MD/QUEEN ANNES
 JV6513  COUNTRY     -  US
 JV6513  USGS QUAD   -  CENTREVILLE (2017)
 JV6513
 JV6513                         *CURRENT SURVEY CONTROL
 JV6513  ______________________________________________________________________
 JV6513* NAD 83(1986) POSITION- 39 03 10.7    (N) 076 04 31.1    (W)   HD_HELD2
 JV6513* NAVD 88 ORTHO HEIGHT -     2.81  (meters)        9.2   (feet) RESET
 JV6513  ______________________________________________________________________
 JV6513  GEOID HEIGHT    -        -33.767 (meters)                     GEOID18
 JV6513  VERT ORDER      -  THIRD
 JV6513
 JV6513.The horizontal coordinates were established by autonomous hand held GPS
 JV6513.observations and have an estimated accuracy of +/- 10 meters.
 JV6513
 JV6513.The orthometric height was computed from unverified reset data.
 JV6513
 JV6513.No vertical observational check was made to the station.
 JV6513
 JV6513.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6513.GEOID18 height accuracy estimate available here.
 JV6513
 JV6513.Click photographs - Photos may exist for this station.
 JV6513
 JV6513;                    North         East    Units  Estimated Accuracy
 JV6513;SPC MD       -   154,292.      480,038.      MT  (+/- 10 meters HH2 GPS)
 JV6513
 JV6513_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0695523205(NAD 83)
 JV6513
 JV6513                          SUPERSEDED SURVEY CONTROL
 JV6513
 JV6513  NGVD 29 (11/18/05)    3.04   (m)           10.0    (f) RESET       3  
 JV6513
 JV6513.Superseded values are not recommended for survey control.
 JV6513
 JV6513.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6513.See file dsdata.pdf to determine how the superseded data were derived.
 JV6513
 JV6513_MARKER: DV = VERTICAL CONTROL DISK
 JV6513_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JV6513_SP_SET: PARAPET WALL
 JV6513_STAMPING: NO 5 1985
 JV6513_MARK LOGO: NGS
 JV6513_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6513_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6513+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV6513
 JV6513  HISTORY     - Date     Condition        Report By
 JV6513  HISTORY     - 1985     MONUMENTED       NGS
 JV6513  HISTORY     - 20020224 GOOD             USPSQD
 JV6513  HISTORY     - 20060318 GOOD             USPSQD
 JV6513  HISTORY     - 20250731 GOOD             PROFLN
 JV6513
 JV6513                          STATION DESCRIPTION
 JV6513
 JV6513'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 JV6513'IN CENTERVILLE.
 JV6513'1.3 KM (0.80 MI) WEST ALONG STATE HIGHWAY 304 FROM THE JUNCTION OF
 JV6513'LIBERTY STREET AND BROADWAY AT THE COURTHOUSE IN CENTERVILLE, 4.6 M
 JV6513'(15.1 FT) SOUTHWEST FROM THE CENTER OF STATE HIGHWAY 304, 5.1 M
 JV6513'(16.7 FT) SOUTHEAST FROM THE MOST EASTERLY EXPANSION JOINT OF THE
 JV6513'BRIDGE, 2.2 M (7.2 FT) NORTHWEST FROM THE SOUTHEAST END OF THE BRIDGE
 JV6513'AND 7.1 M (23.3 FT) NORTH FROM A POWERLINE POLE NUMBERED 33511 18295
 JV6513'34 1/2.
 JV6513'THE MARK IS 0.88 M ABOVE BRIDGE.
 JV6513
 JV6513                          STATION RECOVERY (2002)
 JV6513
 JV6513'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV6513'RECOVERED IN GOOD CONDITION.
 JV6513
 JV6513                          STATION RECOVERY (2006)
 JV6513
 JV6513'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JV6513'RECOVERED IN GOOD CONDITION.
 JV6513
 JV6513                          STATION RECOVERY (2025)
 JV6513
 JV6513'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV6513'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8034 ***********************************************************************
 AJ8034  FBN         -  This is a Federal Base Network Control Station.
 AJ8034  DESIGNATION -  857 3364 B TIDAL
 AJ8034  PID         -  AJ8034
 AJ8034  STATE/COUNTY-  MD/KENT
 AJ8034  COUNTRY     -  US
 AJ8034  USGS QUAD   -  ROCK HALL (2016)
 AJ8034
 AJ8034                         *CURRENT SURVEY CONTROL
 AJ8034  ______________________________________________________________________
 AJ8034* NAD 83(2011) POSITION- 39 12 53.10204(N) 076 14 36.23278(W)   ADJUSTED
 AJ8034* NAD 83(2011) ELLIP HT-   -31.571 (meters)        (06/27/12)   ADJUSTED
 AJ8034* NAD 83(2011) EPOCH   -  2010.00
 AJ8034* NAVD 88 ORTHO HEIGHT -     1.7   (meters)        6.    (feet) GPS OBS
 AJ8034  ______________________________________________________________________
 AJ8034  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8034  GEOID HEIGHT    -        -33.237 (meters)                     GEOID99
 AJ8034  GEOID HEIGHT    -        -33.229 (meters)                     GEOID18
 AJ8034  NAD 83(2011) X  -  1,176,686.491 (meters)                     COMP
 AJ8034  NAD 83(2011) Y  - -4,806,321.941 (meters)                     COMP
 AJ8034  NAD 83(2011) Z  -  4,010,796.899 (meters)                     COMP
 AJ8034  LAPLACE CORR    -         -1.86  (seconds)                    DEFLEC18
 AJ8034
 AJ8034  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8034  Standards:
 AJ8034         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8034            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8034  -------------------------------------------------------------------
 AJ8034  NETWORK    0.51   0.98           0.22   0.20   0.50     -0.00655830
 AJ8034  -------------------------------------------------------------------
 AJ8034  Click here for local accuracies and other accuracy information.
 AJ8034
 AJ8034.The horizontal coordinates were established by GPS observations
 AJ8034.and adjusted by the National Geodetic Survey in June 2012.
 AJ8034
 AJ8034.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8034.been affixed to the stable North American tectonic plate. See 
 AJ8034.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8034
 AJ8034.The horizontal coordinates are valid at the epoch date displayed above
 AJ8034.which is a decimal equivalence of Year/Month/Day.
 AJ8034
 AJ8034.The orthometric height was determined by GPS observations and a
 AJ8034.high-resolution geoid model.
 AJ8034
 AJ8034.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8034.GEOID18 height accuracy estimate available here.
 AJ8034
 AJ8034.Click photographs - Photos may exist for this station.
 AJ8034
 AJ8034.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8034
 AJ8034.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8034
 AJ8034.The ellipsoidal height was determined by GPS observations
 AJ8034.and is referenced to NAD 83.
 AJ8034
 AJ8034. The following values were computed from the NAD 83(2011) position.
 AJ8034
 AJ8034;                    North         East     Units Scale Factor Converg.
 AJ8034;SPC MD       -   172,117.071   465,340.242   MT  0.99996730   +0 28 29.5
 AJ8034;SPC MD       -   564,687.42  1,526,703.78   sFT  0.99996730   +0 28 29.5
 AJ8034;UTM  18      - 4,341,344.578   392,656.500   MT  0.99974188   -0 47 10.3
 AJ8034
 AJ8034!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8034!SPC MD       -   1.00000495  x   0.99996730  =   0.99997225
 AJ8034!UTM  18      -   1.00000495  x   0.99974188  =   0.99974683
 AJ8034
 AJ8034_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9265641344(NAD 83)
 AJ8034
 AJ8034                          SUPERSEDED SURVEY CONTROL
 AJ8034
 AJ8034  NAD 83(2007)-  39 12 53.10226(N)    076 14 36.23352(W) AD(2002.00) 0
 AJ8034  ELLIP H (02/10/07)  -31.545  (m)                       GP(2002.00)    
 AJ8034  NAD 83(1991)-  39 12 53.10227(N)    076 14 36.23361(W) AD(       ) A
 AJ8034  ELLIP H (02/12/02)  -31.540  (m)                       GP(       ) 4 1
 AJ8034
 AJ8034.Superseded values are not recommended for survey control.
 AJ8034
 AJ8034.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8034.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8034
 AJ8034_MARKER: DJ = TIDAL STATION DISK
 AJ8034_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 AJ8034_STAMPING: 857 3364 B 1983
 AJ8034_MARK LOGO: NOS
 AJ8034_PROJECTION: RECESSED 10 CENTIMETERS
 AJ8034_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8034_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ8034_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AJ8034+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2008
 AJ8034_ROD/PIPE-DEPTH: 18 meters
 AJ8034
 AJ8034  HISTORY     - Date     Condition        Report By
 AJ8034  HISTORY     - 1983     MONUMENTED       NOS
 AJ8034  HISTORY     - 20000218 GOOD             NGS
 AJ8034  HISTORY     - 20051211 GOOD             USPSQD
 AJ8034  HISTORY     - 20080718 GOOD             JMT
 AJ8034
 AJ8034                          STATION DESCRIPTION
 AJ8034
 AJ8034'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 AJ8034'THE STATION IS LOCATED ABOUT 17.7 KM (11.00 MI) WEST OF CHESTERTOWN,
 AJ8034'ON THE PROPERTY OF THE TOLCHESTER MARINA AT TOLCHESTER BEACH IN A
 AJ8034'GRASSY AREA ON THE SOUTHEAST SIDE OF A FENCE AROUND A TENNIS COURT.
 AJ8034'OWNERSHIP--TOLCHESTER MARINA INC.  NOTE CONTACT MR ALAN BRAMBLE
 AJ8034'(PRESIDENT) ONE DAY IN ADVANCE BEFORE OCCUPYING THIS STATION.  TO
 AJ8034'REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 213 AND 291 IN
 AJ8034'CHESTERTOWN, GO WEST ON HIGHWAY 291 FOR 0.8 KM (0.50 MI) TO THE
 AJ8034'JUNCTION OF STATE HIGHWAY 20, TURN RIGHT, SOUTHWESTERLY ON HIGHWAY 20
 AJ8034'FOR 11.3 KM (7.00 MI) TO THE JUNCTION OF STATE HIGHWAY 21, TURN RIGHT,
 AJ8034'WESTERLY ON HIGHWAY 21 FOR 5.3 KM (3.30 MI) TO THE ENTRANCE OF THE
 AJ8034'TOLCHESTER MARINA ON THE LEFT, TURN LEFT, PASSING THROUGH THE GATE AND
 AJ8034'TURN AN IMMEDIATE RIGHT, WESTERLY ON THE ASPHALT DRIVE FOR 0.08 KM
 AJ8034'(0.05 MI) TO A WOODED KNOLL ON THE LEFT AND A TENNIS COURT STRAIGHT
 AJ8034'AHEAD AND THE STATION IN A GRASSY AREA ON THE SOUTHEAST SIDE OF THE
 AJ8034'TENNIS COURT.  THE STATION IS AN NOS TIDAL STATION DISK CRIMPED TO THE
 AJ8034'TOP OF A STAINLESS STEEL ROD, ENCASED IN A 10 CM PVC PIPE SURROUNDED
 AJ8034'BY CONCRETE AND ABOUT 10 CM BELOW THE GROUND. LOCATED 21.76 M (71.39
 AJ8034'FT) SOUTH-SOUTHWEST OF THE NORTHEAST END POST OF A WOOD FENCE, 18.59 M
 AJ8034'(60.99 FT) SOUTH OF THE EAST CORNER POST OF THE CHAIN LINK FENCE
 AJ8034'AROUND THE TENNIS COURT, 4.54 M (14.89 FT) SOUTHEAST OF THE SOUTHEAST
 AJ8034'SIDE OF THE FENCE FOR THE TENNIS COURT, 1.01 M (3.31 FT) NORTHWEST OF
 AJ8034'THE WOOD FENCE AND 0.12 M (0.39 FT) SOUTHEAST OF A FIBERGLASS WITNESS
 AJ8034'POST.
 AJ8034
 AJ8034                          STATION RECOVERY (2005)
 AJ8034
 AJ8034'RECOVERY NOTE BY US POWER SQUADRON 2005 (DU)
 AJ8034'RECOVERED IN GOOD CONDITION.
 AJ8034
 AJ8034                          STATION RECOVERY (2008)
 AJ8034
 AJ8034'RECOVERY NOTE BY JOHNSON MIRMIRAN AND THOMPSON PA 2008 (JAF)
 AJ8034'RECOVERED AS DESCRIBED
 AJ8034'DISK IS LOOSE,
 AJ8034'(POOR FOR GPS OBSERVATIONS)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DF8685 ***********************************************************************
 DF8685  DESIGNATION -  857 3704 7 TIDAL
 DF8685  PID         -  DF8685
 DF8685  STATE/COUNTY-  MD/KENT
 DF8685  COUNTRY     -  US
 DF8685  USGS QUAD   -  BETTERTON (2017)
 DF8685
 DF8685                         *CURRENT SURVEY CONTROL
 DF8685  ______________________________________________________________________
 DF8685* NAD 83(1986) POSITION- 39 22 11.40   (N) 076 03 46.37   (W)   HD_HELD1
 DF8685* NAVD 88 ORTHO HEIGHT -    11.266 (meters)       36.96  (feet) ADJUSTED
 DF8685  ______________________________________________________________________
 DF8685  GEOID HEIGHT    -        -33.344 (meters)                     GEOID18
 DF8685  DYNAMIC HEIGHT  -         11.260 (meters)       36.94  (feet) COMP
 DF8685  MODELED GRAVITY -    980,117.5   (mgal)                       NAVD 88
 DF8685
 DF8685  VERT ORDER      -  SECOND    CLASS I
 DF8685
 DF8685.The horizontal coordinates were determined by differentially corrected
 DF8685.hand held GPS observations or other comparable positioning techniques
 DF8685.and have an estimated accuracy of +/- 3 meters.
 DF8685
 DF8685.The orthometric height was determined by differential leveling and
 DF8685.adjusted by the NATIONAL GEODETIC SURVEY
 DF8685.in December 2003.
 DF8685
 DF8685.Significant digits in the geoid height do not necessarily reflect accuracy.
 DF8685.GEOID18 height accuracy estimate available here.
 DF8685
 DF8685.Click photographs - Photos may exist for this station.
 DF8685
 DF8685.The dynamic height is computed by dividing the NAVD 88
 DF8685.geopotential number by the normal gravity value computed on the
 DF8685.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DF8685.degrees latitude (g = 980.6199 gals.).
 DF8685
 DF8685.The modeled gravity was interpolated from observed gravity values.
 DF8685
 DF8685;                    North         East    Units  Estimated Accuracy
 DF8685;SPC MD       -   189,477.8     480,752.5     MT  (+/- 3 meters HH1 GPS) 
 DF8685
 DF8685_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0844358357(NAD 83)
 DF8685
 DF8685                          SUPERSEDED SURVEY CONTROL
 DF8685
 DF8685.No superseded survey control is available for this station.
 DF8685
 DF8685_MARKER: DB = BENCH MARK DISK
 DF8685_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DF8685_SP_SET: RETAINING WALL
 DF8685_STAMPING: NO 7 1971
 DF8685_MARK LOGO: CGS
 DF8685_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DF8685_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DF8685+STABILITY: SURFACE MOTION
 DF8685_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DF8685+SATELLITE: SATELLITE OBSERVATIONS - May 03, 2013
 DF8685
 DF8685  HISTORY     - Date     Condition        Report By
 DF8685  HISTORY     - 1971     MONUMENTED       NOS
 DF8685  HISTORY     - 20010314 GOOD             MDSHA
 DF8685  HISTORY     - 20040102 GOOD             USPSQD
 DF8685  HISTORY     - 20130503 GOOD             ARCSHE
 DF8685
 DF8685                          STATION DESCRIPTION
 DF8685
 DF8685'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DF8685'THE STATION IS LOCATED IN THE TOWN OF BETTERTON, ALONG MAIN STREET
 DF8685'BETWEEN FIRST STREET AND THE SASSAFRAS RIVER.  THE STATION IS A COAST
 DF8685'AND GEODETIC SURVEY TIDAL DISK SET IN A DRILL HOLE AT THE SOUTH END OF
 DF8685'A CONCRETE RETAINING WALL.  IT IS 14.7 FEET (4.5 M) WEST OF THE CENTER
 DF8685'LINE OF THE ROAD, 1.5 FEET (0.5 M) NORTH OF THE SOUTH END OF THE WALL,
 DF8685'32.8 FEET (10.0 M) NORTHWEST OF POWER POLE NUMBER 33999-29830, AND
 DF8685'ABOUT 2 FEET (0.6 M) HIGHER THAN THE ROAD.
 DF8685
 DF8685                          STATION RECOVERY (2004)
 DF8685
 DF8685'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 DF8685'RECOVERED IN GOOD CONDITION.
 DF8685
 DF8685                          STATION RECOVERY (2013)
 DF8685
 DF8685'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 DF8685'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DF8684 ***********************************************************************
 DF8684  DESIGNATION -  857 3704 8 TIDAL
 DF8684  PID         -  DF8684
 DF8684  STATE/COUNTY-  MD/KENT
 DF8684  COUNTRY     -  US
 DF8684  USGS QUAD   -  BETTERTON (2017)
 DF8684
 DF8684                         *CURRENT SURVEY CONTROL
 DF8684  ______________________________________________________________________
 DF8684* NAD 83(1986) POSITION- 39 21 14.9    (N) 076 03 43.7    (W)   HD_HELD2
 DF8684* NAVD 88 ORTHO HEIGHT -    23.662 (meters)       77.63  (feet) ADJUSTED
 DF8684  ______________________________________________________________________
 DF8684  GEOID HEIGHT    -        -33.339 (meters)                     GEOID18
 DF8684  DYNAMIC HEIGHT  -         23.650 (meters)       77.59  (feet) COMP
 DF8684  MODELED GRAVITY -    980,117.2   (mgal)                       NAVD 88
 DF8684
 DF8684  VERT ORDER      -  SECOND    CLASS I
 DF8684
 DF8684.The horizontal coordinates were established by autonomous hand held GPS
 DF8684.observations and have an estimated accuracy of +/- 10 meters.
 DF8684
 DF8684.The orthometric height was determined by differential leveling and
 DF8684.adjusted by the NATIONAL GEODETIC SURVEY
 DF8684.in December 2003.
 DF8684
 DF8684.Significant digits in the geoid height do not necessarily reflect accuracy.
 DF8684.GEOID18 height accuracy estimate available here.
 DF8684
 DF8684.Click photographs - Photos may exist for this station.
 DF8684
 DF8684.The dynamic height is computed by dividing the NAVD 88
 DF8684.geopotential number by the normal gravity value computed on the
 DF8684.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DF8684.degrees latitude (g = 980.6199 gals.).
 DF8684
 DF8684.The modeled gravity was interpolated from observed gravity values.
 DF8684
 DF8684;                    North         East    Units  Estimated Accuracy
 DF8684;SPC MD       -   187,736.      480,834.      MT  (+/- 10 meters HH2 GPS)
 DF8684
 DF8684_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0848656614(NAD 83)
 DF8684
 DF8684                          SUPERSEDED SURVEY CONTROL
 DF8684
 DF8684.No superseded survey control is available for this station.
 DF8684
 DF8684_MARKER: DB = BENCH MARK DISK
 DF8684_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DF8684_STAMPING: NO 8 1971
 DF8684_MARK LOGO: CGS
 DF8684_PROJECTION: FLUSH
 DF8684_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DF8684+STABILITY: SURFACE MOTION
 DF8684_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DF8684+SATELLITE: SATELLITE OBSERVATIONS - April 16, 2025
 DF8684
 DF8684  HISTORY     - Date     Condition        Report By
 DF8684  HISTORY     - 1971     MONUMENTED       NOS
 DF8684  HISTORY     - 20010314 GOOD             MDSHA
 DF8684  HISTORY     - 20130503 GOOD             ARCSHE
 DF8684  HISTORY     - 20250416 GOOD             PROFLN
 DF8684
 DF8684                          STATION DESCRIPTION
 DF8684
 DF8684'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DF8684'THE STATION IS LOCATED ABOUT 1.0 MILES (1.6 KM) SOUTH OF BETTERTON.
 DF8684'
 DF8684'TO REACH THE STATION FROM THE POST OFFICE IN STILL POND, GO NORTHWEST
 DF8684'ALONG STATE HIGHWAY 292 FOR 2.45 MILES (3.94 KM) TO THE STATION ON THE
 DF8684'LEFT.
 DF8684'
 DF8684'THE STATION IS A CGS TIDAL DISK SET IN THE TOP OF A 10 INCH (25 CM)
 DF8684'ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS 29.4
 DF8684'FEET (9.0 M) WEST OF THE CENTERLINE OF THE ROAD, 6.9 FEET (2.1 M)
 DF8684'SOUTHEAST OF THE SOUTHEAST CORNER OF A BRICK COLUMN, 12.2 FEET (3.7 M)
 DF8684'SOUTH OF THE CENTER OF A GRAVEL DRIVEWAY LEADING WEST TO HOUSE NUMBER
 DF8684'13738, 27.1 FEET (8.3 M) SOUTH OF POWER POLE NUMBER 34009-29261, 1.4
 DF8684'FEET (0.4 M) NORTH OF A CARSONITE WITNESS POST AND ABOUT LEVEL WITH
 DF8684'THE ROAD.
 DF8684
 DF8684                          STATION RECOVERY (2013)
 DF8684
 DF8684'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 DF8684'RECOVERED IN GOOD CONDITION.
 DF8684
 DF8684                          STATION RECOVERY (2025)
 DF8684
 DF8684'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DF8684'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0549 ***********************************************************************
 JV0549  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0549  DESIGNATION -  857 3704 TIDAL 4
 JV0549  PID         -  JV0549
 JV0549  STATE/COUNTY-  MD/KENT
 JV0549  COUNTRY     -  US
 JV0549  USGS QUAD   -  BETTERTON (2017)
 JV0549
 JV0549                         *CURRENT SURVEY CONTROL
 JV0549  ______________________________________________________________________
 JV0549* NAD 83(1986) POSITION- 39 22 14.0    (N) 076 03 46.0    (W)   HD_HELD2
 JV0549* NAVD 88 ORTHO HEIGHT -     4.967 (meters)       16.30  (feet) ADJUSTED
 JV0549  ______________________________________________________________________
 JV0549  GEOID HEIGHT    -        -33.345 (meters)                     GEOID18
 JV0549  DYNAMIC HEIGHT  -          4.964 (meters)       16.29  (feet) COMP
 JV0549  MODELED GRAVITY -    980,117.5   (mgal)                       NAVD 88
 JV0549
 JV0549  VERT ORDER      -  SECOND    CLASS I
 JV0549
 JV0549.The horizontal coordinates were established by autonomous hand held GPS
 JV0549.observations and have an estimated accuracy of +/- 10 meters.
 JV0549
 JV0549.The orthometric height was determined by differential leveling and
 JV0549.adjusted by the NATIONAL GEODETIC SURVEY
 JV0549.in June 1991.
 JV0549
 JV0549.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0549.GEOID18 height accuracy estimate available here.
 JV0549
 JV0549.This Tidal Bench Mark is designated as VM 3162
 JV0549.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0549
 JV0549.Click photographs - Photos may exist for this station.
 JV0549
 JV0549.The dynamic height is computed by dividing the NAVD 88
 JV0549.geopotential number by the normal gravity value computed on the
 JV0549.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0549.degrees latitude (g = 980.6199 gals.).
 JV0549
 JV0549.The modeled gravity was interpolated from observed gravity values.
 JV0549
 JV0549;                    North         East    Units  Estimated Accuracy
 JV0549;SPC MD       -   189,558.      480,761.      MT  (+/- 10 meters HH2 GPS)
 JV0549
 JV0549_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0845358437(NAD 83)
 JV0549
 JV0549                          SUPERSEDED SURVEY CONTROL
 JV0549
 JV0549  NGVD 29 (11/26/84)    5.211  (m)           17.10   (f) ADJUSTED    2 0
 JV0549
 JV0549.Superseded values are not recommended for survey control.
 JV0549
 JV0549.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0549.See file dsdata.pdf to determine how the superseded data were derived.
 JV0549
 JV0549_MARKER: DJ = TIDAL STATION DISK
 JV0549_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV0549_SP_SET: PIER
 JV0549_STAMPING: NO 4 1938
 JV0549_MARK LOGO: CGS
 JV0549_PROJECTION: PROJECTING 37 CENTIMETERS
 JV0549_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0549_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0549_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0549+SATELLITE: SATELLITE OBSERVATIONS - April 16, 2025
 JV0549
 JV0549  HISTORY     - Date     Condition        Report By
 JV0549  HISTORY     - 1938     MONUMENTED       CGS
 JV0549  HISTORY     - 1964     GOOD             CGS
 JV0549  HISTORY     - 20010215 GOOD             MDSHA
 JV0549  HISTORY     - 20040102 GOOD             USPSQD
 JV0549  HISTORY     - 20130503 GOOD             ARCSHE
 JV0549  HISTORY     - 20250416 GOOD             PROFLN
 JV0549
 JV0549                          STATION DESCRIPTION
 JV0549
 JV0549'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0549'AT BETTERTON.
 JV0549'AT BETTERTON, ON EAST SIDE OF THE MAIN STREET LEADING TO THE
 JV0549'AMUSEMENT PIER, ACROSS THE STREET EAST OF THE T-STREET
 JV0549'INTERSECTION LEADING WEST TO THE CHESAPEAKE HOUSE.  IN NORTH
 JV0549'FACE OF THE FIRST CONCRETE PIER SUPPORTING THE STAIRWAY LEADING
 JV0549'TO THE RIGBIE HOTEL.  A STANDARD DISK SET VERTICALLY ABOUT 15
 JV0549'INCHES ABOVE THE GROUND.
 JV0549
 JV0549                          STATION RECOVERY (2001)
 JV0549
 JV0549'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV0549'RECOVERED AS DESCRIBED.
 JV0549
 JV0549                          STATION RECOVERY (2004)
 JV0549
 JV0549'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 JV0549'RECOVERED IN GOOD CONDITION.
 JV0549
 JV0549                          STATION RECOVERY (2013)
 JV0549
 JV0549'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JV0549'RECOVERED IN GOOD CONDITION.
 JV0549
 JV0549                          STATION RECOVERY (2025)
 JV0549
 JV0549'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0549'THE MARK IS 35 EAST OF MAIN ST, 24 FT (7.3 M) EAST OF THE EAST CURB OF
 JV0549'MAIN ST, 23 FT (7.0 M) SOUTH OF THE EXTENDED CENTERLINE OF ERICSSON
 JV0549'ST.  AN ELECTRIC BOX IS PLACED ABOVE THE MARK WITH WHITE CONDUIT ON
 JV0549'EITHER SIDE OF THE MARK FROM THE BOX INTO THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6256 ***********************************************************************
 JV6256  TIDAL BM    -  This is a Tidal Bench Mark.
 JV6256  DESIGNATION -  857 4070 A TIDAL
 JV6256  PID         -  JV6256
 JV6256  STATE/COUNTY-  MD/HARFORD
 JV6256  COUNTRY     -  US
 JV6256  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV6256
 JV6256                         *CURRENT SURVEY CONTROL
 JV6256  ______________________________________________________________________
 JV6256* NAD 83(1986) POSITION- 39 32 19.     (N) 076 05 24.     (W)   SCALED
 JV6256* NAVD 88 ORTHO HEIGHT -     7.101 (meters)       23.30  (feet) ADJUSTED
 JV6256  ______________________________________________________________________
 JV6256  GEOID HEIGHT    -        -33.173 (meters)                     GEOID18
 JV6256  DYNAMIC HEIGHT  -          7.097 (meters)       23.28  (feet) COMP
 JV6256  MODELED GRAVITY -    980,126.4   (mgal)                       NAVD 88
 JV6256
 JV6256  VERT ORDER      -  FIRST     CLASS II
 JV6256
 JV6256.The horizontal coordinates were scaled from a map and have
 JV6256.an estimated accuracy of +/- 6 seconds.
 JV6256
 JV6256.The orthometric height was determined by differential leveling and
 JV6256.adjusted by the NATIONAL GEODETIC SURVEY
 JV6256.in June 1991.
 JV6256
 JV6256.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6256.GEOID18 height accuracy estimate available here.
 JV6256
 JV6256.This Tidal Bench Mark is designated as VM 423
 JV6256.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV6256
 JV6256.Click photographs - Photos may exist for this station.
 JV6256
 JV6256.The dynamic height is computed by dividing the NAVD 88
 JV6256.geopotential number by the normal gravity value computed on the
 JV6256.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6256.degrees latitude (g = 980.6199 gals.).
 JV6256
 JV6256.The modeled gravity was interpolated from observed gravity values.
 JV6256
 JV6256;                    North         East    Units  Estimated Accuracy
 JV6256;SPC MD       -   208,190.      478,230.      MT  (+/- 180 meters Scaled)
 JV6256
 JV6256_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ063771(NAD 83)
 JV6256
 JV6256                          SUPERSEDED SURVEY CONTROL
 JV6256
 JV6256.No superseded survey control is available for this station.
 JV6256
 JV6256_MARKER: DJ = TIDAL STATION DISK
 JV6256_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6256_SP_SET: RETAINING WALL
 JV6256_STAMPING: 4070 A 1977
 JV6256_MARK LOGO: NOS
 JV6256_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6256_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6256+STABILITY: SURFACE MOTION
 JV6256_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6256+SATELLITE: SATELLITE OBSERVATIONS - November 02, 1989
 JV6256
 JV6256  HISTORY     - Date     Condition        Report By
 JV6256  HISTORY     - 1977     MONUMENTED       NOS
 JV6256  HISTORY     - 19891102 GOOD             NGS
 JV6256  HISTORY     - 19980425 MARK NOT FOUND   USPSQD
 JV6256  HISTORY     - 20020309 MARK NOT FOUND   USPSQD
 JV6256
 JV6256                          STATION DESCRIPTION
 JV6256
 JV6256'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6256'IN HAVRE DE GRACE, AT THE INTERSECTION OF COMMERCE AND WASHINGTON
 JV6256'STREETS, IN THE NORTHWEST RETAINING WALL OF A CELLAR ENTRANCE ON THE
 JV6256'SOUTHWEST SIDE OF A GAZEBO IN MILLARD TYDINGS MEMORIAL PARK, 32.0 M
 JV6256'(105.0 FT) SOUTH OF THE CENTERLINE OF COMMERCE STREET, 22.3 M (73.2
 JV6256'FT) NORTHWEST OF THE NORTHWEST CORNER OF THE VETERANS MEMORIAL
 JV6256'MONUMENT, 16.3 M (53.5 FT) WEST OF THE EXTENDED CENTER OF WASHINGTON
 JV6256'STREET, 0.7 M (2.3 FT) SOUTHWEST OF THE SOUTHWEST FACE OF THE GAZEBO,
 JV6256'AND FLUSH WITH THE GROUND SURFACE.
 JV6256
 JV6256                          STATION RECOVERY (1998)
 JV6256
 JV6256'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6256'MARK NOT FOUND.
 JV6256
 JV6256                          STATION RECOVERY (2002)
 JV6256
 JV6256'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV6256'NOT FOUND - NOT ACCESSIBLE - CELLAR DOORS LOCKED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6255 ***********************************************************************
 JV6255  TIDAL BM    -  This is a Tidal Bench Mark.
 JV6255  DESIGNATION -  857 4070 B TIDAL
 JV6255  PID         -  JV6255
 JV6255  STATE/COUNTY-  MD/HARFORD
 JV6255  COUNTRY     -  US
 JV6255  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV6255
 JV6255                         *CURRENT SURVEY CONTROL
 JV6255  ______________________________________________________________________
 JV6255* NAD 83(1986) POSITION- 39 32 20.53   (N) 076 05 28.74   (W)   HD_HELD1
 JV6255* NAVD 88 ORTHO HEIGHT -     7.200 (meters)       23.62  (feet) ADJUSTED
 JV6255  ______________________________________________________________________
 JV6255  GEOID HEIGHT    -        -33.170 (meters)                     GEOID18
 JV6255  DYNAMIC HEIGHT  -          7.196 (meters)       23.61  (feet) COMP
 JV6255  MODELED GRAVITY -    980,126.5   (mgal)                       NAVD 88
 JV6255
 JV6255  VERT ORDER      -  FIRST     CLASS II
 JV6255
 JV6255.The horizontal coordinates were determined by differentially corrected
 JV6255.hand held GPS observations or other comparable positioning techniques
 JV6255.and have an estimated accuracy of +/- 3 meters.
 JV6255
 JV6255.The orthometric height was determined by differential leveling and
 JV6255.adjusted by the NATIONAL GEODETIC SURVEY
 JV6255.in June 1991.
 JV6255
 JV6255.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6255.GEOID18 height accuracy estimate available here.
 JV6255
 JV6255.This Tidal Bench Mark is designated as VM 424
 JV6255.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV6255
 JV6255.Click photographs - Photos may exist for this station.
 JV6255
 JV6255.The dynamic height is computed by dividing the NAVD 88
 JV6255.geopotential number by the normal gravity value computed on the
 JV6255.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6255.degrees latitude (g = 980.6199 gals.).
 JV6255
 JV6255.The modeled gravity was interpolated from observed gravity values.
 JV6255
 JV6255;                    North         East    Units  Estimated Accuracy
 JV6255;SPC MD       -   208,237.7     478,115.2     MT  (+/- 3 meters HH1 GPS) 
 JV6255
 JV6255_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0622177165(NAD 83)
 JV6255
 JV6255                          SUPERSEDED SURVEY CONTROL
 JV6255
 JV6255.No superseded survey control is available for this station.
 JV6255
 JV6255_MARKER: DJ = TIDAL STATION DISK
 JV6255_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6255_STAMPING: 4070 B 1979
 JV6255_MARK LOGO: NOS
 JV6255_PROJECTION: RECESSED 5 CENTIMETERS
 JV6255_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6255_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6255_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6255+SATELLITE: SATELLITE OBSERVATIONS - November 02, 1989
 JV6255_ROD/PIPE-DEPTH: 7.3 meters
 JV6255
 JV6255  HISTORY     - Date     Condition        Report By
 JV6255  HISTORY     - 1979     MONUMENTED       NOS
 JV6255  HISTORY     - 19891102 GOOD             NGS
 JV6255  HISTORY     - 19980425 GOOD             USPSQD
 JV6255  HISTORY     - 20020309 GOOD             USPSQD
 JV6255  HISTORY     - 20150920 MARK NOT FOUND   USPSQD
 JV6255
 JV6255                          STATION DESCRIPTION
 JV6255
 JV6255'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6255'IN HAVER DE GRACE, AT THE INTERSECTION OF SOUTH UNION AVENUE AND
 JV6255'COMMERCE STREET, 13.1 M (43.0 FT) NORTH OF THE CENTERLINE OF THE
 JV6255'STREET, 9.8 M (32.2 FT) EAST OF THE CENTERLINE OF THE AVENUE, 3.9 M
 JV6255'(12.8 FT) NORTH-NORTHWEST OF A FIRE HYDRANT, 2.9 M (9.5 FT)
 JV6255'EAST-SOUTHEAST OF A UTILITY LIGHT POLE, AND LEVEL WITH THE AVENUE.
 JV6255'NOTE--THE DISK IS ENCASED IN A 4-INCH PVC PIPE.
 JV6255
 JV6255                          STATION RECOVERY (1998)
 JV6255
 JV6255'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6255'RECOVERED IN GOOD CONDITION.
 JV6255
 JV6255                          STATION RECOVERY (2002)
 JV6255
 JV6255'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV6255'FOUND. LOCATED UNDER LEFT SIDE OF PARK BENCH.
 JV6255
 JV6255                          STATION RECOVERY (2015)
 JV6255
 JV6255'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV6255'THE MARKER WAS NOT FOUND. GPS READINGS INDICATES THE LOCATION IS IN A
 JV6255'LOCATION OCCUPIED BY A CONCRETE FOUNDATION FOR A PARK BENCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6257 ***********************************************************************
 JV6257  TIDAL BM    -  This is a Tidal Bench Mark.
 JV6257  DESIGNATION -  857 4070 C TIDAL
 JV6257  PID         -  JV6257
 JV6257  STATE/COUNTY-  MD/HARFORD
 JV6257  COUNTRY     -  US
 JV6257  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV6257
 JV6257                         *CURRENT SURVEY CONTROL
 JV6257  ______________________________________________________________________
 JV6257* NAD 83(1986) POSITION- 39 32 36.     (N) 076 05 30.     (W)   SCALED
 JV6257* NAVD 88 ORTHO HEIGHT -    10.176 (meters)       33.39  (feet) ADJUSTED
 JV6257  ______________________________________________________________________
 JV6257  GEOID HEIGHT    -        -33.161 (meters)                     GEOID18
 JV6257  DYNAMIC HEIGHT  -         10.171 (meters)       33.37  (feet) COMP
 JV6257  MODELED GRAVITY -    980,126.8   (mgal)                       NAVD 88
 JV6257
 JV6257  VERT ORDER      -  FIRST     CLASS II
 JV6257
 JV6257.The horizontal coordinates were scaled from a map and have
 JV6257.an estimated accuracy of +/- 6 seconds.
 JV6257
 JV6257.The orthometric height was determined by differential leveling and
 JV6257.adjusted by the NATIONAL GEODETIC SURVEY
 JV6257.in June 1991.
 JV6257
 JV6257.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6257.GEOID18 height accuracy estimate available here.
 JV6257
 JV6257.This Tidal Bench Mark is designated as VM 425
 JV6257.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV6257
 JV6257.Click photographs - Photos may exist for this station.
 JV6257
 JV6257.The dynamic height is computed by dividing the NAVD 88
 JV6257.geopotential number by the normal gravity value computed on the
 JV6257.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6257.degrees latitude (g = 980.6199 gals.).
 JV6257
 JV6257.The modeled gravity was interpolated from observed gravity values.
 JV6257
 JV6257;                    North         East    Units  Estimated Accuracy
 JV6257;SPC MD       -   208,720.      478,080.      MT  (+/- 180 meters Scaled)
 JV6257
 JV6257_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ061776(NAD 83)
 JV6257
 JV6257                          SUPERSEDED SURVEY CONTROL
 JV6257
 JV6257.No superseded survey control is available for this station.
 JV6257
 JV6257_MARKER: DJ = TIDAL STATION DISK
 JV6257_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6257_STAMPING: 4070 C 1979
 JV6257_MARK LOGO: NOS
 JV6257_PROJECTION: RECESSED 3 CENTIMETERS
 JV6257_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6257_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6257_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6257+SATELLITE: SATELLITE OBSERVATIONS - October 01, 2006
 JV6257_ROD/PIPE-DEPTH: 11.0 meters
 JV6257
 JV6257  HISTORY     - Date     Condition        Report By
 JV6257  HISTORY     - 1979     MONUMENTED       NOS
 JV6257  HISTORY     - 19891102 GOOD             NGS
 JV6257  HISTORY     - 20020309 GOOD             USPSQD
 JV6257  HISTORY     - 20020703 POOR             GEOCAC
 JV6257  HISTORY     - 20061001 GOOD             USPSQD
 JV6257  HISTORY     - 20150920 MARK NOT FOUND   USPSQD
 JV6257
 JV6257                          STATION DESCRIPTION
 JV6257
 JV6257'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6257'IN HAVRE DE GRACE, AT THE INTERSECTION OF SOUTH UNION AVENUE AND
 JV6257'REVOLUTION STREET, 13.6 M (44.6 FT) WEST OF THE CENTERLINE OF THE
 JV6257'AVENUE, 11.6 M (38.1 FT) SOUTH OF THE CENTERLINE OF THE STREET, 4.7 M
 JV6257'(15.4 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF A 1.5 BY 2 FT METAL
 JV6257'ACCESS COVER IN THE SOUTH SIDEWALK OF THE STREET, 4.0 M (13.1 FT)
 JV6257'WEST OF A TRAFFIC SIGNAL POLE, AND 0.2 M (0.7 FT) ABOVE THE LEVEL OF
 JV6257'THE AVENUE.  NOTE--THE DISK IS ENCASED IN A 4-INCH PVC PIPE.
 JV6257
 JV6257                          STATION RECOVERY (2002)
 JV6257
 JV6257'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV6257'FOUND. NO LONGER ENCASED IN PVC PIPE.
 JV6257
 JV6257                          STATION RECOVERY (2002)
 JV6257
 JV6257'RECOVERY NOTE BY GEOCACHING 2002 (APC)
 JV6257'STATION DISK WOBBLES IN PLACE.
 JV6257
 JV6257                          STATION RECOVERY (2006)
 JV6257
 JV6257'RECOVERY NOTE BY US POWER SQUADRON 2006 (TYB)
 JV6257'RECOVERED IN GOOD CONDITION.
 JV6257
 JV6257                          STATION RECOVERY (2015)
 JV6257
 JV6257'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV6257'THE MARKER LOCATION IS AT THE EDGE OF A NEW TRAFFIC POLE FOUNDATION
 JV6257'WHICH WAS INSTALLED IN 2008 DURING A TRAFFIC SYSTEM UPGRADE ON UNION
 JV6257'AVENUE. THE MARKER WAS MOST LIKELY DESTROYED AT THAT TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6247 ***********************************************************************
 JV6247  TIDAL BM    -  This is a Tidal Bench Mark.
 JV6247  DESIGNATION -  857 4070 D TIDAL
 JV6247  PID         -  JV6247
 JV6247  STATE/COUNTY-  MD/HARFORD
 JV6247  COUNTRY     -  US
 JV6247  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV6247
 JV6247                         *CURRENT SURVEY CONTROL
 JV6247  ______________________________________________________________________
 JV6247* NAD 83(1986) POSITION- 39 32 51.87   (N) 076 05 30.26   (W)   HD_HELD1
 JV6247* NAVD 88 ORTHO HEIGHT -    12.221 (meters)       40.10  (feet) ADJUSTED
 JV6247  ______________________________________________________________________
 JV6247  GEOID HEIGHT    -        -33.153 (meters)                     GEOID18
 JV6247  DYNAMIC HEIGHT  -         12.215 (meters)       40.08  (feet) COMP
 JV6247  MODELED GRAVITY -    980,127.1   (mgal)                       NAVD 88
 JV6247
 JV6247  VERT ORDER      -  FIRST     CLASS II
 JV6247
 JV6247.The horizontal coordinates were determined by differentially corrected
 JV6247.hand held GPS observations or other comparable positioning techniques
 JV6247.and have an estimated accuracy of +/- 3 meters.
 JV6247
 JV6247.The orthometric height was determined by differential leveling and
 JV6247.adjusted by the NATIONAL GEODETIC SURVEY
 JV6247.in June 1991.
 JV6247
 JV6247.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6247.GEOID18 height accuracy estimate available here.
 JV6247
 JV6247.This Tidal Bench Mark is designated as VM 426
 JV6247.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV6247
 JV6247.Click photographs - Photos may exist for this station.
 JV6247
 JV6247.The dynamic height is computed by dividing the NAVD 88
 JV6247.geopotential number by the normal gravity value computed on the
 JV6247.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6247.degrees latitude (g = 980.6199 gals.).
 JV6247
 JV6247.The modeled gravity was interpolated from observed gravity values.
 JV6247
 JV6247;                    North         East    Units  Estimated Accuracy
 JV6247;SPC MD       -   209,203.9     478,069.3     MT  (+/- 3 meters HH1 GPS) 
 JV6247
 JV6247_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0619678131(NAD 83)
 JV6247
 JV6247                          SUPERSEDED SURVEY CONTROL
 JV6247
 JV6247.No superseded survey control is available for this station.
 JV6247
 JV6247_MARKER: DJ = TIDAL STATION DISK
 JV6247_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6247_STAMPING: 4070 D 1979
 JV6247_MARK LOGO: NOS
 JV6247_PROJECTION: RECESSED 3 CENTIMETERS
 JV6247_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6247_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6247_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6247+SATELLITE: SATELLITE OBSERVATIONS - October 01, 2006
 JV6247_ROD/PIPE-DEPTH: 7.3 meters
 JV6247
 JV6247  HISTORY     - Date     Condition        Report By
 JV6247  HISTORY     - 1979     MONUMENTED       NOS
 JV6247  HISTORY     - 19891102 GOOD             NGS
 JV6247  HISTORY     - 19980425 GOOD             USPSQD
 JV6247  HISTORY     - 20020309 GOOD             USPSQD
 JV6247  HISTORY     - 20061001 GOOD             USPSQD
 JV6247
 JV6247                          STATION DESCRIPTION
 JV6247
 JV6247'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6247'IN HAVRE DE GRACE, AT THE INTERSECTION OF UNION AND CONGRESS AVENUES,
 JV6247'20.3 M (66.6 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF THE ST. JOHNS
 JV6247'EPISCOPAL CHURCH, 9.0 M (29.5 FT) WEST OF THE CENTERLINE OF UNION
 JV6247'AVENUE, 8.8 M (28.9 FT) NORTH OF THE CENTERLINE OF CONGRESS AVENUE,
 JV6247'2.3 M (7.5 FT) EAST OF THE EAST EDGE OF A SIDEWALK, 1.9 M (6.2 FT)
 JV6247'SOUTH OF THE SOUTH EDGE OF A SIDEWALK, AND 0.2 M (0.7 FT) ABOVE THE
 JV6247'LEVEL OF THE AVENUES.  NOTE--THE DISK IS ENCASED IN A 4-INCH PVC
 JV6247'PIPE.
 JV6247
 JV6247                          STATION RECOVERY (1998)
 JV6247
 JV6247'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6247'RECOVERED IN GOOD CONDITION.
 JV6247
 JV6247                          STATION RECOVERY (2002)
 JV6247
 JV6247'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV6247'FOUND. SOUTH/SOUTHEAST OF TRAFFIC LIGHT POLE.
 JV6247
 JV6247                          STATION RECOVERY (2006)
 JV6247
 JV6247'RECOVERY NOTE BY US POWER SQUADRON 2006 (TYB)
 JV6247'6 FT SSE OF TRAFFIC LIGHT POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0015 ***********************************************************************
 JV0015  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0015  DESIGNATION -  857 4070 TIDAL 1
 JV0015  PID         -  JV0015
 JV0015  STATE/COUNTY-  MD/HARFORD
 JV0015  COUNTRY     -  US
 JV0015  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0015
 JV0015                         *CURRENT SURVEY CONTROL
 JV0015  ______________________________________________________________________
 JV0015* NAD 83(1986) POSITION- 39 33 09.84   (N) 076 05 32.76   (W)   HD_HELD1
 JV0015* NAVD 88 ORTHO HEIGHT -     7.142 (meters)       23.43  (feet) ADJUSTED
 JV0015  ______________________________________________________________________
 JV0015  GEOID HEIGHT    -        -33.142 (meters)                     GEOID18
 JV0015  DYNAMIC HEIGHT  -          7.138 (meters)       23.42  (feet) COMP
 JV0015  MODELED GRAVITY -    980,127.5   (mgal)                       NAVD 88
 JV0015
 JV0015  VERT ORDER      -  FIRST     CLASS I
 JV0015
 JV0015.The horizontal coordinates were determined by differentially corrected
 JV0015.hand held GPS observations or other comparable positioning techniques
 JV0015.and have an estimated accuracy of +/- 3 meters.
 JV0015
 JV0015.The orthometric height was determined by differential leveling and
 JV0015.adjusted by the NATIONAL GEODETIC SURVEY
 JV0015.in June 1991.
 JV0015
 JV0015.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0015.GEOID18 height accuracy estimate available here.
 JV0015
 JV0015.This Tidal Bench Mark is designated as VM 420
 JV0015.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0015
 JV0015.Click photographs - Photos may exist for this station.
 JV0015
 JV0015.The dynamic height is computed by dividing the NAVD 88
 JV0015.geopotential number by the normal gravity value computed on the
 JV0015.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0015.degrees latitude (g = 980.6199 gals.).
 JV0015
 JV0015.The modeled gravity was interpolated from observed gravity values.
 JV0015
 JV0015;                    North         East    Units  Estimated Accuracy
 JV0015;SPC MD       -   209,757.5     478,004.1     MT  (+/- 3 meters HH1 GPS) 
 JV0015
 JV0015_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0614378686(NAD 83)
 JV0015
 JV0015                          SUPERSEDED SURVEY CONTROL
 JV0015
 JV0015  NGVD 29 (11/26/84)    7.381  (m)           24.22   (f) ADJUSTED    1 1
 JV0015
 JV0015.Superseded values are not recommended for survey control.
 JV0015
 JV0015.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0015.See file dsdata.pdf to determine how the superseded data were derived.
 JV0015
 JV0015_MARKER: DB = BENCH MARK DISK
 JV0015_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JV0015_SP_SET: RETAINING WALL
 JV0015_STAMPING: 1 1927
 JV0015_MARK LOGO: CGS
 JV0015_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0015_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0015+SATELLITE: SATELLITE OBSERVATIONS - November 02, 1989
 JV0015
 JV0015  HISTORY     - Date     Condition        Report By
 JV0015  HISTORY     - 1927     MONUMENTED       CGS
 JV0015  HISTORY     - 1955     GOOD             CGS
 JV0015  HISTORY     - 1971     GOOD             NGS
 JV0015  HISTORY     - 1979     GOOD             NGS
 JV0015  HISTORY     - 1987     GOOD             USPSQD
 JV0015  HISTORY     - 19891102 GOOD             NGS
 JV0015  HISTORY     - 19970419 GOOD             USPSQD
 JV0015  HISTORY     - 20020309 GOOD             USPSQD
 JV0015
 JV0015                          STATION DESCRIPTION
 JV0015
 JV0015'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0015'AT HAVRE DE GRACE.
 JV0015'AT HAVRE DE GRACE, AT INTERSECTION OF OTSEGO STREET AND UNION AVENUE,
 JV0015'17 FEET SOUTH OF SOUTH CURB OF OTSEGO STREET, 192 FEET WEST OF CENTER
 JV0015'LINE OF UNION AVENUE, 44 FEET SOUTHWEST OF CENTER OF JUNCTION
 JV0015'OF OTSEGO AND PEARL STREET LEADING NORTHWEST, IN THE TOP OF
 JV0015'STONE MASONRY RETAINING WALL OF THE SOUTHWEST ABUTMENT OF
 JV0015'PENNSYLVANIA RAILROAD BRIDGE OVER SUSQUEHANNA RIVER, 106 FEET
 JV0015'WEST OF NORTH CORNER OF ABUTMENT AND ABOUT 5 FEET ABOVE LEVEL
 JV0015'OF SIDE WALK.  NOTE-- MARK MAY BE COVERED WITH GROWTH OF VINES.
 JV0015
 JV0015                          STATION RECOVERY (1971)
 JV0015
 JV0015'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0015'RECOVERED IN GOOD CONDITION.
 JV0015
 JV0015                          STATION RECOVERY (1979)
 JV0015
 JV0015'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0015'RECOVERED IN GOOD CONDITION.
 JV0015
 JV0015                          STATION RECOVERY (1987)
 JV0015
 JV0015'RECOVERY NOTE BY US POWER SQUADRON 1987 (MFD)
 JV0015'RECOVERED IN GOOD CONDITION.
 JV0015
 JV0015                          STATION RECOVERY (1989)
 JV0015
 JV0015'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0015'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN HAVRE DE
 JV0015'GRACE, AT THE INTERSECTION OF PEARL AND OTSEGO STREETS, IN TOP OF AND
 JV0015'0.5 M (1.6 FT) EAST OF THE WEST END OF THE SOUTHWEST STONE MASONRY
 JV0015'RETAINING WALL OF THE AMTRAK RAILROAD BRIDGE SPANNING THE SUSQUEHANNA
 JV0015'RIVER, 10.8 M (35.4 FT) SOUTH OF THE CENTERLINE OF OTSEGO STREET, 6.2
 JV0015'M (20.3 FT) WEST OF THE EXTENDED CENTER OF PEARL STREET, AND 1.5 M
 JV0015'(4.9 FT) ABOVE THE LEVEL OF OTSEGO STREET.
 JV0015
 JV0015                          STATION RECOVERY (1997)
 JV0015
 JV0015'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0015'RECOVERED IN GOOD CONDITION.
 JV0015
 JV0015                          STATION RECOVERY (2002)
 JV0015
 JV0015'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV0015'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0016 ***********************************************************************
 JV0016  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0016  DESIGNATION -  857 4070 TIDAL 2
 JV0016  PID         -  JV0016
 JV0016  STATE/COUNTY-  MD/HARFORD
 JV0016  COUNTRY     -  US
 JV0016  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0016
 JV0016                         *CURRENT SURVEY CONTROL
 JV0016  ______________________________________________________________________
 JV0016* NAD 83(1986) POSITION- 39 33 09.53   (N) 076 05 32.77   (W)   HD_HELD1
 JV0016* NAVD 88 ORTHO HEIGHT -     7.877 (meters)       25.84  (feet) ADJUSTED
 JV0016  ______________________________________________________________________
 JV0016  GEOID HEIGHT    -        -33.142 (meters)                     GEOID18
 JV0016  DYNAMIC HEIGHT  -          7.873 (meters)       25.83  (feet) COMP
 JV0016  MODELED GRAVITY -    980,127.5   (mgal)                       NAVD 88
 JV0016
 JV0016  VERT ORDER      -  FIRST     CLASS I
 JV0016
 JV0016.The horizontal coordinates were determined by differentially corrected
 JV0016.hand held GPS observations or other comparable positioning techniques
 JV0016.and have an estimated accuracy of +/- 3 meters.
 JV0016
 JV0016.The orthometric height was determined by differential leveling and
 JV0016.adjusted by the NATIONAL GEODETIC SURVEY
 JV0016.in June 1991.
 JV0016
 JV0016.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0016.GEOID18 height accuracy estimate available here.
 JV0016
 JV0016.This Tidal Bench Mark is designated as VM 421
 JV0016.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0016
 JV0016.Click photographs - Photos may exist for this station.
 JV0016
 JV0016.The dynamic height is computed by dividing the NAVD 88
 JV0016.geopotential number by the normal gravity value computed on the
 JV0016.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0016.degrees latitude (g = 980.6199 gals.).
 JV0016
 JV0016.The modeled gravity was interpolated from observed gravity values.
 JV0016
 JV0016;                    North         East    Units  Estimated Accuracy
 JV0016;SPC MD       -   209,747.9     478,004.0     MT  (+/- 3 meters HH1 GPS) 
 JV0016
 JV0016_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0614378677(NAD 83)
 JV0016
 JV0016                          SUPERSEDED SURVEY CONTROL
 JV0016
 JV0016  NGVD 29 (11/26/84)    8.117  (m)           26.63   (f) ADJUSTED    1 1
 JV0016
 JV0016.Superseded values are not recommended for survey control.
 JV0016
 JV0016.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0016.See file dsdata.pdf to determine how the superseded data were derived.
 JV0016
 JV0016_MARKER: DB = BENCH MARK DISK
 JV0016_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0016_SP_SET: WINGWALL
 JV0016_STAMPING: 2 1927
 JV0016_MARK LOGO: CGS
 JV0016_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0016+STABILITY: SURFACE MOTION
 JV0016_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0016+SATELLITE: SATELLITE OBSERVATIONS - October 01, 2006
 JV0016
 JV0016  HISTORY     - Date     Condition        Report By
 JV0016  HISTORY     - 1927     MONUMENTED       CGS
 JV0016  HISTORY     - 1955     GOOD             CGS
 JV0016  HISTORY     - 1971     GOOD             NGS
 JV0016  HISTORY     - 1979     GOOD             NGS
 JV0016  HISTORY     - 1987     GOOD             USPSQD
 JV0016  HISTORY     - 19891102 GOOD             NGS
 JV0016  HISTORY     - 19970419 GOOD             USPSQD
 JV0016  HISTORY     - 20020309 GOOD             USPSQD
 JV0016  HISTORY     - 20061001 GOOD             USPSQD
 JV0016
 JV0016                          STATION DESCRIPTION
 JV0016
 JV0016'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0016'AT HAVRE DE GRACE.
 JV0016'AT HAVRE DE GRACE, AT JUNCTION OF OTSEGO STREET AND A BLACK
 JV0016'TOP ALLEY WHICH IS BETWEEN UNION AND STOKES AVENUE, AT OVERPASS
 JV0016'OF PENNSYLVANIA RAILROAD OVER ALLEY, 45 1/2 FEET SOUTH OF SOUTH
 JV0016'CURB OF OTSEGO STREET, 10 1/2 FEET EAST OF CENTER LINE OF ALLEY,
 JV0016'ABOUT 0.05 MILE WEST OF SOUTHWEST ABUTMENT OF P.R.R. BRIDGE
 JV0016'OVER SUSQUEHANNA RIVER, IN THE TOP OF THE NORTH END (LOWER PART)
 JV0016'OF THE NORTH WING WALL OF EAST STONE MASONRY ARCH OVERPASS OF
 JV0016'RAILROAD OVER ALLEY AND ABOUT 2 1/2 FEET ABOVE LEVEL OF ALLEY.
 JV0016
 JV0016                          STATION RECOVERY (1971)
 JV0016
 JV0016'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0016'RECOVERED IN GOOD CONDITION.
 JV0016
 JV0016                          STATION RECOVERY (1979)
 JV0016
 JV0016'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0016'RECOVERED IN GOOD CONDITION.
 JV0016
 JV0016                          STATION RECOVERY (1987)
 JV0016
 JV0016'RECOVERY NOTE BY US POWER SQUADRON 1987 (MFD)
 JV0016'RECOVERED IN GOOD CONDITION.
 JV0016
 JV0016                          STATION RECOVERY (1989)
 JV0016
 JV0016'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0016'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN HAVRE DE
 JV0016'GRACE, AT THE INTERSECTION OF OTSEGO STREET AND FREEDOM LANE, IN TOP
 JV0016'OF AND 0.4 M (1.3 FT) SOUTH OF THE NORTH END OF THE BOTTOM STEP OF
 JV0016'THE NORTH STONE WINGWALL OF THE EAST ABUTMENT OF THE AMTRAK RAILROAD
 JV0016'OVERPASS OF FREEDOM LANE, 19.5 M (64.0 FT) SOUTH OF THE CENTERLINE OF
 JV0016'THE STREET, 3.2 M (10.5 FT) EAST OF THE CENTER OF THE LANE, AND 0.9 M
 JV0016'(3.0 FT) ABOVE THE LEVEL OF THE LANE.
 JV0016
 JV0016                          STATION RECOVERY (1997)
 JV0016
 JV0016'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0016'RECOVERED IN GOOD CONDITION.
 JV0016
 JV0016                          STATION RECOVERY (2002)
 JV0016
 JV0016'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV0016'RECOVERED IN GOOD CONDITION.
 JV0016
 JV0016                          STATION RECOVERY (2006)
 JV0016
 JV0016'RECOVERY NOTE BY US POWER SQUADRON 2006 (TYB)
 JV0016'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0014 ***********************************************************************
 JV0014  DESIGNATION -  857 4070 TIDAL 3
 JV0014  PID         -  JV0014
 JV0014  STATE/COUNTY-  MD/HARFORD
 JV0014  COUNTRY     -  US
 JV0014  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0014
 JV0014                         *CURRENT SURVEY CONTROL
 JV0014  ______________________________________________________________________
 JV0014* NAD 83(1986) POSITION- 39 33 09.     (N) 076 05 30.     (W)   SCALED
 JV0014* NAVD 88 ORTHO HEIGHT -     6.539 (meters)       21.45  (feet) ADJUSTED
 JV0014  ______________________________________________________________________
 JV0014  GEOID HEIGHT    -        -33.143 (meters)                     GEOID18
 JV0014  DYNAMIC HEIGHT  -          6.535 (meters)       21.44  (feet) COMP
 JV0014  MODELED GRAVITY -    980,127.4   (mgal)                       NAVD 88
 JV0014
 JV0014  VERT ORDER      -  FIRST     CLASS I
 JV0014
 JV0014.The horizontal coordinates were scaled from a map and have
 JV0014.an estimated accuracy of +/- 6 seconds.
 JV0014
 JV0014.The orthometric height was determined by differential leveling and
 JV0014.adjusted by the NATIONAL GEODETIC SURVEY
 JV0014.in June 1991.
 JV0014
 JV0014.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0014.GEOID18 height accuracy estimate available here.
 JV0014
 JV0014.Click photographs - Photos may exist for this station.
 JV0014
 JV0014.The dynamic height is computed by dividing the NAVD 88
 JV0014.geopotential number by the normal gravity value computed on the
 JV0014.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0014.degrees latitude (g = 980.6199 gals.).
 JV0014
 JV0014.The modeled gravity was interpolated from observed gravity values.
 JV0014
 JV0014;                    North         East    Units  Estimated Accuracy
 JV0014;SPC MD       -   209,730.      478,070.      MT  (+/- 180 meters Scaled)
 JV0014
 JV0014_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ062786(NAD 83)
 JV0014
 JV0014                          SUPERSEDED SURVEY CONTROL
 JV0014
 JV0014  NGVD 29 (11/26/84)    6.778  (m)           22.24   (f) ADJUSTED    1 1
 JV0014
 JV0014.Superseded values are not recommended for survey control.
 JV0014
 JV0014.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0014.See file dsdata.pdf to determine how the superseded data were derived.
 JV0014
 JV0014_MARKER: DB = BENCH MARK DISK
 JV0014_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0014_SP_SET: STEP
 JV0014_STAMPING: 3 1927
 JV0014_MARK LOGO: CGS
 JV0014_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0014_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0014+SATELLITE: SATELLITE OBSERVATIONS - April 21, 2001
 JV0014
 JV0014  HISTORY     - Date     Condition        Report By
 JV0014  HISTORY     - 1927     MONUMENTED       CGS
 JV0014  HISTORY     - 1955     GOOD             CGS
 JV0014  HISTORY     - 1971     GOOD             NGS
 JV0014  HISTORY     - 1979     GOOD             NGS
 JV0014  HISTORY     - 1987     POOR             USPSQD
 JV0014  HISTORY     - 19891102 MARK NOT FOUND   NGS
 JV0014  HISTORY     - 20010421 GOOD             USPSQD
 JV0014  HISTORY     - 20020309 MARK NOT FOUND   USPSQD
 JV0014
 JV0014                          STATION DESCRIPTION
 JV0014
 JV0014'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0014'AT HAVRE DE GRACE.
 JV0014'AT HAVRE DE GRACE, AT INTERSECTION OF OTSEGO STREET AND UNION
 JV0014'AVENUE, AT OVERPASS OF PENNSYLVANIA RAILROAD BRIDGE OVER
 JV0014'SUSQUEHANNA RIVER AND UNION AVENUE, 37 1/2 FEET WEST OF WEST
 JV0014'CURB OF UNION AVENUE, 126 FEET SOUTH OF SOUTH CURB OF OTSEGO
 JV0014'STREET, IN THE TOP OF THE BOTTOM STONE STEP OF A FLIGHT OF
 JV0014'CONCRETE AND STONE STEPS LEADING ALONG THE TOP OF THE SOUTHEAST
 JV0014'STONE MASONRY WING WALL TO THE TOP OF THE SOUTHWEST ABUTMENT
 JV0014'OF P.R.R. BRIDGE OVER SUSQUEHANNA RIVER AND ABOUT 3 FEET ABOVE
 JV0014'THE LEVEL OF UNION AVENUE.
 JV0014
 JV0014                          STATION RECOVERY (1971)
 JV0014
 JV0014'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0014'RECOVERED IN GOOD CONDITION.
 JV0014
 JV0014                          STATION RECOVERY (1979)
 JV0014
 JV0014'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0014'RECOVERED IN GOOD CONDITION.
 JV0014
 JV0014                          STATION RECOVERY (1987)
 JV0014
 JV0014'RECOVERY NOTE BY US POWER SQUADRON 1987 (MFD)
 JV0014'MARK RECOVERED IN POOR CONDITION.
 JV0014
 JV0014                          STATION RECOVERY (1989)
 JV0014
 JV0014'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0014'THE STEM OF THE DISK IS ALL THAT REMAINS AT THE DESCRIBED LOCATION.
 JV0014
 JV0014                          STATION RECOVERY (2001)
 JV0014
 JV0014'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV0014'RECOVERED IN GOOD CONDITION.
 JV0014
 JV0014                          STATION RECOVERY (2002)
 JV0014
 JV0014'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV0014'NOT FOUND. POSSIBLY BURIED UNDER 1 FOOT OF NEW EARTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0011 ***********************************************************************
 JV0011  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0011  DESIGNATION -  857 4070 TIDAL 4
 JV0011  PID         -  JV0011
 JV0011  STATE/COUNTY-  MD/HARFORD
 JV0011  COUNTRY     -  US
 JV0011  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0011
 JV0011                         *CURRENT SURVEY CONTROL
 JV0011  ______________________________________________________________________
 JV0011* NAD 83(1986) POSITION- 39 32 16.33   (N) 076 05 22.48   (W)   HD_HELD1
 JV0011* NAVD 88 ORTHO HEIGHT -     1.504 (meters)        4.93  (feet) ADJUSTED
 JV0011  ______________________________________________________________________
 JV0011  GEOID HEIGHT    -        -33.175 (meters)                     GEOID18
 JV0011  DYNAMIC HEIGHT  -          1.503 (meters)        4.93  (feet) COMP
 JV0011  MODELED GRAVITY -    980,126.3   (mgal)                       NAVD 88
 JV0011
 JV0011  VERT ORDER      -  FIRST     CLASS I
 JV0011
 JV0011.The horizontal coordinates were determined by differentially corrected
 JV0011.hand held GPS observations or other comparable positioning techniques
 JV0011.and have an estimated accuracy of +/- 3 meters.
 JV0011
 JV0011.The orthometric height was determined by differential leveling and
 JV0011.adjusted by the NATIONAL GEODETIC SURVEY
 JV0011.in June 1991.
 JV0011
 JV0011.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0011.GEOID18 height accuracy estimate available here.
 JV0011
 JV0011.This Tidal Bench Mark is designated as VM 422
 JV0011.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0011
 JV0011.Click photographs - Photos may exist for this station.
 JV0011
 JV0011.The dynamic height is computed by dividing the NAVD 88
 JV0011.geopotential number by the normal gravity value computed on the
 JV0011.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0011.degrees latitude (g = 980.6199 gals.).
 JV0011
 JV0011.The modeled gravity was interpolated from observed gravity values.
 JV0011
 JV0011;                    North         East    Units  Estimated Accuracy
 JV0011;SPC MD       -   208,109.7     478,266.0     MT  (+/- 3 meters HH1 GPS) 
 JV0011
 JV0011_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0636877034(NAD 83)
 JV0011
 JV0011                          SUPERSEDED SURVEY CONTROL
 JV0011
 JV0011  NGVD 29 (11/26/84)    1.742  (m)            5.72   (f) ADJUSTED    1 1
 JV0011
 JV0011.Superseded values are not recommended for survey control.
 JV0011
 JV0011.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0011.See file dsdata.pdf to determine how the superseded data were derived.
 JV0011
 JV0011_MARKER: DB = BENCH MARK DISK
 JV0011_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0011_SP_SET: BULKHEAD
 JV0011_STAMPING: NO 4 1938
 JV0011_MARK LOGO: CGS
 JV0011_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0011+STABILITY: SURFACE MOTION
 JV0011_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0011+SATELLITE: SATELLITE OBSERVATIONS - February 01, 2016
 JV0011
 JV0011  HISTORY     - Date     Condition        Report By
 JV0011  HISTORY     - 1938     MONUMENTED       CGS
 JV0011  HISTORY     - 1955     GOOD             CGS
 JV0011  HISTORY     - 1971     GOOD             NGS
 JV0011  HISTORY     - 1979     GOOD             NGS
 JV0011  HISTORY     - 1987     GOOD             USPSQD
 JV0011  HISTORY     - 19891103 GOOD             NGS
 JV0011  HISTORY     - 19970419 POOR             USPSQD
 JV0011  HISTORY     - 20020309 GOOD             USPSQD
 JV0011  HISTORY     - 20030703 GOOD             GEOCAC
 JV0011  HISTORY     - 20150920 GOOD             USPSQD
 JV0011  HISTORY     - 20160201 GOOD             NAGEL
 JV0011
 JV0011                          STATION DESCRIPTION
 JV0011
 JV0011'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0011'AT HAVRE DE GRACE.
 JV0011'AT HAVRE DE GRACE, ABOUT 0.1 MILE SOUTH ACROSS BAY SIDE PARK
 JV0011'FROM THE JUNCTION OF WASHINGTON AND COMMERCE STREETS, IN THE TOP
 JV0011'OF A CORNER IN THE CONCRETE BULKHEAD OF THE HAVRE DE GRACE
 JV0011'YACHT BASIN, ABOUT 4 YARDS WEST OF THE EXTENDED CENTER LINE
 JV0011'OF WASHINGTON STREET, AT THE EAST END OF CONCRETE SIDE WALK
 JV0011'ALONG BULKHEAD AND ABOUT 1 INCH ABOVE LEVEL OF SIDE WALK.
 JV0011
 JV0011                          STATION RECOVERY (1971)
 JV0011
 JV0011'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0011'RECOVERED IN GOOD CONDITION.
 JV0011
 JV0011                          STATION RECOVERY (1979)
 JV0011
 JV0011'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0011'RECOVERED IN GOOD CONDITION.
 JV0011
 JV0011                          STATION RECOVERY (1987)
 JV0011
 JV0011'RECOVERY NOTE BY US POWER SQUADRON 1987 (MFD)
 JV0011'RECOVERED IN GOOD CONDITION.
 JV0011
 JV0011                          STATION RECOVERY (1989)
 JV0011
 JV0011'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0011'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN HAVRE DE
 JV0011'GRACE, AT THE HAVER DE GRACE CITY MARINA YACHT BASIN, AT THE NORTH
 JV0011'END OF THE MOST EASTERLY 1 OF 6 WOODEN PIERS AT THE BOAT DOCK AREA,
 JV0011'IN TOP OF AND 8.0 M (26.2 FT) NORTHWEST OF THE SOUTHEAST END OF A
 JV0011'CONCRETE BULKHEAD, 32.2 M (105.6 FT) SOUTHWEST OF THE SOUTHWEST
 JV0011'CORNER OF THE MARINE SNACK BAR AND THE DOCK MASTERS OFFICE, 9.0 M
 JV0011'(29.5 FT) WEST OF UTILITY POLE NUMBER 400W MERCURY, 1.2 M (3.9 FT)
 JV0011'EAST OF THE CENTER OF THE PIER, AND LEVEL WITH A PARKING LOT.
 JV0011
 JV0011                          STATION RECOVERY (1997)
 JV0011
 JV0011'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0011'MARK RECOVERED IN POOR CONDITION.
 JV0011
 JV0011                          STATION RECOVERY (2002)
 JV0011
 JV0011'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV0011'CORRECT SPELLING OF  HAVRE DE GRACE.
 JV0011
 JV0011                          STATION RECOVERY (2003)
 JV0011
 JV0011'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV0011'RECOVERED IN GOOD CONDITION.
 JV0011
 JV0011                          STATION RECOVERY (2015)
 JV0011
 JV0011'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0011'RECOVERED AS DESCRIBED.
 JV0011
 JV0011                          STATION RECOVERY (2016)
 JV0011
 JV0011'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2016 (GEN)
 JV0011'STATION IS LOCATED AT THE ANGLE BREAK IN THE BULKHEAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0013 ***********************************************************************
 JV0013  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0013  DESIGNATION -  857 4070 TIDAL 5
 JV0013  PID         -  JV0013
 JV0013  STATE/COUNTY-  MD/HARFORD
 JV0013  COUNTRY     -  US
 JV0013  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0013
 JV0013                         *CURRENT SURVEY CONTROL
 JV0013  ______________________________________________________________________
 JV0013* NAD 83(1986) POSITION- 39 32 18.62   (N) 076 05 22.46   (W)   HD_HELD1
 JV0013* NAVD 88 ORTHO HEIGHT -     7.065 (meters)       23.18  (feet) ADJUSTED
 JV0013  ______________________________________________________________________
 JV0013  GEOID HEIGHT    -        -33.174 (meters)                     GEOID18
 JV0013  DYNAMIC HEIGHT  -          7.061 (meters)       23.17  (feet) COMP
 JV0013  MODELED GRAVITY -    980,126.4   (mgal)                       NAVD 88
 JV0013
 JV0013  VERT ORDER      -  FIRST     CLASS II
 JV0013
 JV0013.The horizontal coordinates were determined by differentially corrected
 JV0013.hand held GPS observations or other comparable positioning techniques
 JV0013.and have an estimated accuracy of +/- 3 meters.
 JV0013
 JV0013.The orthometric height was determined by differential leveling and
 JV0013.adjusted by the NATIONAL GEODETIC SURVEY
 JV0013.in June 1991.
 JV0013
 JV0013.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0013.GEOID18 height accuracy estimate available here.
 JV0013
 JV0013.This Tidal Bench Mark is designated as VM 419
 JV0013.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0013
 JV0013.Click photographs - Photos may exist for this station.
 JV0013
 JV0013.The dynamic height is computed by dividing the NAVD 88
 JV0013.geopotential number by the normal gravity value computed on the
 JV0013.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0013.degrees latitude (g = 980.6199 gals.).
 JV0013
 JV0013.The modeled gravity was interpolated from observed gravity values.
 JV0013
 JV0013;                    North         East    Units  Estimated Accuracy
 JV0013;SPC MD       -   208,180.3     478,265.8     MT  (+/- 3 meters HH1 GPS) 
 JV0013
 JV0013_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0637077104(NAD 83)
 JV0013
 JV0013                          SUPERSEDED SURVEY CONTROL
 JV0013
 JV0013  NGVD 29 (11/26/84)    7.326  (m)           24.04   (f) ADJUSTED    1 2
 JV0013
 JV0013.Superseded values are not recommended for survey control.
 JV0013
 JV0013.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0013.See file dsdata.pdf to determine how the superseded data were derived.
 JV0013
 JV0013_MARKER: DB = BENCH MARK DISK
 JV0013_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0013_SP_SET: STEP
 JV0013_STAMPING: NO 5 1938
 JV0013_MARK LOGO: CGS
 JV0013_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0013_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0013+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2015
 JV0013
 JV0013  HISTORY     - Date     Condition        Report By
 JV0013  HISTORY     - 1938     MONUMENTED       CGS
 JV0013  HISTORY     - 1955     GOOD             CGS
 JV0013  HISTORY     - 1979     GOOD             NGS
 JV0013  HISTORY     - 1987     GOOD             USPSQD
 JV0013  HISTORY     - 19891102 GOOD             NGS
 JV0013  HISTORY     - 19970419 GOOD             USPSQD
 JV0013  HISTORY     - 20020309 GOOD             USPSQD
 JV0013  HISTORY     - 20030703 GOOD             GEOCAC
 JV0013  HISTORY     - 20150920 GOOD             USPSQD
 JV0013
 JV0013                          STATION DESCRIPTION
 JV0013
 JV0013'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0013'AT HAVRE DE GRACE.
 JV0013'AT HAVRE DE GRACE, ABOUT 0.75 MILE SOUTH ALONG UNION AVENUE
 JV0013'FROM THE POST OFFICE, THENCE 1 BLOCK EAST ALONG COMMERCE STREET,
 JV0013'162 FEET SOUTH OF CENTER OF JUNCTION OF COMMERCE STREET AND
 JV0013'WASHINGTON STREET LEADING NORTH, ABOUT IN LINE WITH THE EXTENDED
 JV0013'CENTER LINE OF WASHINGTON STREET, IN THE TOP OF THE WEST SIDE
 JV0013'OF THE BOTTOM STEP OF GRANITE BASE OF VETERANS OF 1917-1918
 JV0013'MONUMENT WHICH IS LOCATED IN BAY SIDE PARK AND ABOUT 1 FOOT
 JV0013'ABOVE GROUND.
 JV0013
 JV0013                          STATION RECOVERY (1979)
 JV0013
 JV0013'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0013'RECOVERED IN GOOD CONDITION.
 JV0013
 JV0013                          STATION RECOVERY (1987)
 JV0013
 JV0013'RECOVERY NOTE BY US POWER SQUADRON 1987 (MFD)
 JV0013'RECOVERED IN GOOD CONDITION.
 JV0013
 JV0013                          STATION RECOVERY (1989)
 JV0013
 JV0013'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0013'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN HAVRE DE
 JV0013'GRACE, AT THE INTERSECTION OF COMMERCE AND WASHINGTON STREETS, IN THE
 JV0013'WEST END OF THE BOTTOM STEP OF THE GRANITE BASE OF THE VETERANS
 JV0013'1917-1918 MEMORIAL MONUMENT IN MILLARD TYDINGS MEMORIAL PARK, 49.5 M
 JV0013'(162.4 FT) SOUTH OF THE CENTERLINE OF COMMERCE STREET, 1.5 M (4.9 FT)
 JV0013'WEST OF THE EXTENDED CENTER OF WASHINGTON STREET, AND 0.3 M (1.0 FT)
 JV0013'ABOVE THE GROUND SURFACE.
 JV0013
 JV0013                          STATION RECOVERY (1997)
 JV0013
 JV0013'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0013'RECOVERED IN GOOD CONDITION.
 JV0013
 JV0013                          STATION RECOVERY (2002)
 JV0013
 JV0013'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV0013'RECOVERED IN GOOD CONDITION.
 JV0013
 JV0013                          STATION RECOVERY (2003)
 JV0013
 JV0013'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV0013'RECOVERED IN GOOD CONDITION.
 JV0013
 JV0013                          STATION RECOVERY (2015)
 JV0013
 JV0013'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0013'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0012 ***********************************************************************
 JV0012  DESIGNATION -  857 4070 TIDAL 6
 JV0012  PID         -  JV0012
 JV0012  STATE/COUNTY-  MD/HARFORD
 JV0012  COUNTRY     -  US
 JV0012  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0012
 JV0012                         *CURRENT SURVEY CONTROL
 JV0012  ______________________________________________________________________
 JV0012* NAD 83(1986) POSITION- 39 32 19.     (N) 076 05 29.     (W)   SCALED
 JV0012* NAVD 88 ORTHO HEIGHT -     7.292 (meters)       23.92  (feet) ADJUSTED
 JV0012  ______________________________________________________________________
 JV0012  GEOID HEIGHT    -        -33.171 (meters)                     GEOID18
 JV0012  DYNAMIC HEIGHT  -          7.288 (meters)       23.91  (feet) COMP
 JV0012  MODELED GRAVITY -    980,126.5   (mgal)                       NAVD 88
 JV0012
 JV0012  VERT ORDER      -  FIRST     CLASS I
 JV0012
 JV0012.The horizontal coordinates were scaled from a map and have
 JV0012.an estimated accuracy of +/- 6 seconds.
 JV0012
 JV0012.The orthometric height was determined by differential leveling and
 JV0012.adjusted by the NATIONAL GEODETIC SURVEY
 JV0012.in June 1991.
 JV0012
 JV0012.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0012.GEOID18 height accuracy estimate available here.
 JV0012
 JV0012.Click photographs - Photos may exist for this station.
 JV0012
 JV0012.The dynamic height is computed by dividing the NAVD 88
 JV0012.geopotential number by the normal gravity value computed on the
 JV0012.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0012.degrees latitude (g = 980.6199 gals.).
 JV0012
 JV0012.The modeled gravity was interpolated from observed gravity values.
 JV0012
 JV0012;                    North         East    Units  Estimated Accuracy
 JV0012;SPC MD       -   208,190.      478,110.      MT  (+/- 180 meters Scaled)
 JV0012
 JV0012_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ062771(NAD 83)
 JV0012
 JV0012                          SUPERSEDED SURVEY CONTROL
 JV0012
 JV0012  NGVD 29 (11/26/84)    7.531  (m)           24.71   (f) ADJUSTED    1 1
 JV0012
 JV0012.Superseded values are not recommended for survey control.
 JV0012
 JV0012.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0012.See file dsdata.pdf to determine how the superseded data were derived.
 JV0012
 JV0012_MARKER: DB = BENCH MARK DISK
 JV0012_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0012_SP_SET: WALL
 JV0012_STAMPING: NO 6 1938
 JV0012_MARK LOGO: CGS
 JV0012_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0012
 JV0012  HISTORY     - Date     Condition        Report By
 JV0012  HISTORY     - 1938     MONUMENTED       CGS
 JV0012  HISTORY     - 1955     GOOD             CGS
 JV0012  HISTORY     - 1971     GOOD             NGS
 JV0012  HISTORY     - 1979     MARK NOT FOUND   NGS
 JV0012
 JV0012                          STATION DESCRIPTION
 JV0012
 JV0012'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0012'AT HAVRE DE GRACE.
 JV0012'AT HAVRE DE GRACE, ABOUT 0.75 MILE SOUTH ALONG UNION STREET
 JV0012'FROM THE POST OFFICE, AT THE T JUNCTION OF UNION AVENUE LEADING NORTH
 JV0012'AND COMMERCE STREET LEADING EAST-WEST, 8.7 FEET SOUTH OF SOUTH
 JV0012'CURB OF COMMERCE STREET, 47 1/2 FEET EAST OF EXTENDED LINE OF
 JV0012'EAST CURB LINE OF UNION AVENUE, SET VERTICALLY IN THE EAST
 JV0012'FACE OF EAST END OF A 1 1/2-FOOT HIGH STONE MASONRY RETAINING
 JV0012'WALL ALONG SOUTH SIDE OF COMMERCE STREET AND ABOUT 1/2 FOOT
 JV0012'ABOVE LEVEL OF STREET.
 JV0012
 JV0012                          STATION RECOVERY (1971)
 JV0012
 JV0012'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0012'RECOVERED IN GOOD CONDITION.
 JV0012
 JV0012                          STATION RECOVERY (1979)
 JV0012
 JV0012'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0012'NOTE, WALL IS NOW TORN DOWN
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3808 ***********************************************************************
 DI3808  DESIGNATION -  857 4680 B TIDAL
 DI3808  PID         -  DI3808
 DI3808  STATE/COUNTY-  MD/C OF BALTIMORE
 DI3808  COUNTRY     -  US
 DI3808  USGS QUAD   -  BALTIMORE EAST (2016)
 DI3808
 DI3808                         *CURRENT SURVEY CONTROL
 DI3808  ______________________________________________________________________
 DI3808* NAD 83(1986) POSITION- 39 15 58.29   (N) 076 34 45.99   (W)   HD_HELD1
 DI3808* NAVD 88 ORTHO HEIGHT -     1.398 (meters)        4.59  (feet) ADJUSTED
 DI3808  ______________________________________________________________________
 DI3808  GEOID HEIGHT    -        -32.849 (meters)                     GEOID18
 DI3808  DYNAMIC HEIGHT  -          1.397 (meters)        4.58  (feet) COMP
 DI3808  MODELED GRAVITY -    980,099.5   (mgal)                       NAVD 88
 DI3808
 DI3808  VERT ORDER      -  SECOND    CLASS I
 DI3808
 DI3808.The horizontal coordinates were determined by differentially corrected
 DI3808.hand held GPS observations or other comparable positioning techniques
 DI3808.and have an estimated accuracy of +/- 3 meters.
 DI3808
 DI3808.The orthometric height was determined by differential leveling and
 DI3808.adjusted by the NATIONAL GEODETIC SURVEY
 DI3808.in June 2008.
 DI3808
 DI3808.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3808.GEOID18 height accuracy estimate available here.
 DI3808
 DI3808.Click photographs - Photos may exist for this station.
 DI3808
 DI3808.The dynamic height is computed by dividing the NAVD 88
 DI3808.geopotential number by the normal gravity value computed on the
 DI3808.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DI3808.degrees latitude (g = 980.6199 gals.).
 DI3808
 DI3808.The modeled gravity was interpolated from observed gravity values.
 DI3808
 DI3808;                    North         East    Units  Estimated Accuracy
 DI3808;SPC MD       -   177,640.7     436,293.4     MT  (+/- 3 meters HH1 GPS) 
 DI3808
 DI3808_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6374347505(NAD 83)
 DI3808
 DI3808                          SUPERSEDED SURVEY CONTROL
 DI3808
 DI3808.No superseded survey control is available for this station.
 DI3808
 DI3808_MARKER: F = FLANGE-ENCASED ROD
 DI3808_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DI3808_STAMPING: 4680 B 1997
 DI3808_MARK LOGO: NOS
 DI3808_PROJECTION: RECESSED 5 CENTIMETERS
 DI3808_MAGNETIC: I = MARKER IS A STEEL ROD
 DI3808_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DI3808_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3808+SATELLITE: SATELLITE OBSERVATIONS - September 19, 2008
 DI3808_ROD/PIPE-DEPTH: 12.2 meters
 DI3808_SLEEVE-DEPTH  : 1.0 meters
 DI3808
 DI3808  HISTORY     - Date     Condition        Report By
 DI3808  HISTORY     - 1997     MONUMENTED       NOS
 DI3808  HISTORY     - 20060815 GOOD             NGS
 DI3808  HISTORY     - 20080919 GOOD             OPUS
 DI3808
 DI3808                          STATION DESCRIPTION
 DI3808
 DI3808'DESCRIBED BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 DI3808'LOCATED IN THE LAWN ON THE NORTH SIDE OF THE CORPS OF ENGINEERS
 DI3808'BUILDING AT FT MCHENRY BALTIMORE DISTRICT YARD.
 DI3808'
 DI3808'17.77 M (91.1 FT) SOUTHEAST OF A POWER POLE 816425 ON THE EAST SIDE OF
 DI3808'THE PARKING LOT, 24.58 M (80.6 FT) SOUTHWEST OF A SEAWALL, 61 FT (18.6
 DI3808'M) SOUTHEAST OF BENCH MARK FT MCHENRY USE, AND 4.78 M (15.7 FT)
 DI3808'NORTH-NORTHEAST OF THE NORTHEAST FACE OF THE OFFICE BUILDING.
 DI3808'
 DI3808'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
 DI3808
 DI3808                          STATION RECOVERY (2008)
 DI3808
 DI3808'RECOVERY NOTE BY OPUS SHARED SOLUTIONS 2008 (OPS)
 DI3808'THE MARK IS FOUND ABOUT 6.4 MI (10.3 KM) WEST-NORTHWEST OF SPARROWS
 DI3808'POINT, 2.8 MI (4.5 KM) NORTH OF CURTIS BAY AND 2.4 MI (3.9 KM)
 DI3808'SOUTHEAST OF BALTIMORE.
 DI3808'
 DI3808'4680 B 1997 IS LOCATED IN US CORPS OF ENGINEERS COMPOUND AT FT
 DI3808'MCHENRY, BALTIMORE, MD. THE BENCH MARK IS LOCATED IN THE LAWN ON THE
 DI3808'NORTH SIDE OF THE US CORPS OF ENGINEERS FT MCHENRY, 91.1 FT SE OF
 DI3808'POWER POLE NUMBER 816425 ON THE EAST SIDE OF THE PARKING LOT, 80.6 FT
 DI3808'SW OF THE SEAWALL, AND 15.7 FT NNE OF THE NE FACE OF THE OFFICE
 DI3808'BUILDING. THE POINT IS SET 0.4 FT BELOW GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3807 ***********************************************************************
 DI3807  DESIGNATION -  857 4680 C TIDAL
 DI3807  PID         -  DI3807
 DI3807  STATE/COUNTY-  MD/C OF BALTIMORE
 DI3807  COUNTRY     -  US
 DI3807  USGS QUAD   -  BALTIMORE EAST (2016)
 DI3807
 DI3807                         *CURRENT SURVEY CONTROL
 DI3807  ______________________________________________________________________
 DI3807* NAD 83(1986) POSITION- 39 15 57.58   (N) 076 34 50.18   (W)   HD_HELD1
 DI3807* NAVD 88 ORTHO HEIGHT -     1.643 (meters)        5.39  (feet) ADJUSTED
 DI3807  ______________________________________________________________________
 DI3807  GEOID HEIGHT    -        -32.847 (meters)                     GEOID18
 DI3807  DYNAMIC HEIGHT  -          1.642 (meters)        5.39  (feet) COMP
 DI3807  MODELED GRAVITY -    980,099.6   (mgal)                       NAVD 88
 DI3807
 DI3807  VERT ORDER      -  SECOND    CLASS I
 DI3807
 DI3807.The horizontal coordinates were determined by differentially corrected
 DI3807.hand held GPS observations or other comparable positioning techniques
 DI3807.and have an estimated accuracy of +/- 3 meters.
 DI3807
 DI3807.The orthometric height was determined by differential leveling and
 DI3807.adjusted by the NATIONAL GEODETIC SURVEY
 DI3807.in June 2008.
 DI3807
 DI3807.No vertical observational check was made to the station.
 DI3807
 DI3807.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3807.GEOID18 height accuracy estimate available here.
 DI3807
 DI3807.Click photographs - Photos may exist for this station.
 DI3807
 DI3807.The dynamic height is computed by dividing the NAVD 88
 DI3807.geopotential number by the normal gravity value computed on the
 DI3807.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DI3807.degrees latitude (g = 980.6199 gals.).
 DI3807
 DI3807.The modeled gravity was interpolated from observed gravity values.
 DI3807
 DI3807;                    North         East    Units  Estimated Accuracy
 DI3807;SPC MD       -   177,618.4     436,193.1     MT  (+/- 3 meters HH1 GPS) 
 DI3807
 DI3807_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6364347485(NAD 83)
 DI3807
 DI3807                          SUPERSEDED SURVEY CONTROL
 DI3807
 DI3807.No superseded survey control is available for this station.
 DI3807
 DI3807_MARKER: F = FLANGE-ENCASED ROD
 DI3807_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DI3807_STAMPING: 4680 C 1997
 DI3807_MARK LOGO: NOS
 DI3807_PROJECTION: RECESSED 11 CENTIMETERS
 DI3807_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DI3807_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DI3807_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3807+SATELLITE: SATELLITE OBSERVATIONS - February 13, 2007
 DI3807_ROD/PIPE-DEPTH: 4.60 meters
 DI3807_SLEEVE-DEPTH  : 1.0 meters
 DI3807
 DI3807  HISTORY     - Date     Condition        Report By
 DI3807  HISTORY     - 1997     MONUMENTED       NOS
 DI3807  HISTORY     - 20070213 GOOD             NGS
 DI3807
 DI3807                          STATION DESCRIPTION
 DI3807
 DI3807'DESCRIBED BY NATIONAL GEODETIC SURVEY 2007 (JRO)
 DI3807'THE MARK IS LOCATED IN THE LAWN IN FRONT OF (ON THE SOUTHWEST SIDE OF)
 DI3807'THE NAVAL RESERVE TRAINING CENTER JUST WEST OF THE CORPS OF ENGINEERS
 DI3807'FT MCHENRY YARD,
 DI3807'
 DI3807'12.51 M (41.0 FT) NORTHWEST OF THE NORTHWEST EDGE OF THE PARKING LOT,
 DI3807'8.23 M (27.0 FT) SOUTHWEST OF A LARGE FLAG POLE SURROUNDED BY A HEDGE,
 DI3807'AND 3.38 M (11.1 FT) NORTHWEST OF THE NORTH EDGE OF A CONCRETE PAD
 DI3807'SUPPORTING AN ANCHOR.
 DI3807'
 DI3807'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0581 ***********************************************************************
 JV0581  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0581  DESIGNATION -  857 4680 TIDAL 1=SEAWALL
 JV0581  PID         -  JV0581
 JV0581  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0581  COUNTRY     -  US
 JV0581  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0581
 JV0581                         *CURRENT SURVEY CONTROL
 JV0581  ______________________________________________________________________
 JV0581* NAD 83(1991) POSITION- 39 15 56.21425(N) 076 34 41.03632(W)   ADJUSTED
 JV0581* NAVD 88 ORTHO HEIGHT -     1.113 (meters)        3.65  (feet) ADJUSTED
 JV0581  ______________________________________________________________________
 JV0581  GEOID HEIGHT    -        -32.853 (meters)                     GEOID18
 JV0581  LAPLACE CORR    -         -4.41  (seconds)                    DEFLEC18
 JV0581  DYNAMIC HEIGHT  -          1.112 (meters)        3.65  (feet) COMP
 JV0581  MODELED GRAVITY -    980,099.4   (mgal)                       NAVD 88
 JV0581
 JV0581  HORZ ORDER      -  THIRD
 JV0581  VERT ORDER      -  SECOND    CLASS I
 JV0581
 JV0581.The horizontal coordinates were established by classical geodetic methods
 JV0581.and adjusted by the National Geodetic Survey in January 1992.
 JV0581
 JV0581.The orthometric height was determined by differential leveling and
 JV0581.adjusted by the NATIONAL GEODETIC SURVEY
 JV0581.in June 2008.
 JV0581
 JV0581.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0581.GEOID18 height accuracy estimate available here.
 JV0581
 JV0581.This Tidal Bench Mark is designated as VM 13779
 JV0581.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0581
 JV0581.Click photographs - Photos may exist for this station.
 JV0581
 JV0581.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0581
 JV0581.The dynamic height is computed by dividing the NAVD 88
 JV0581.geopotential number by the normal gravity value computed on the
 JV0581.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0581.degrees latitude (g = 980.6199 gals.).
 JV0581
 JV0581.The modeled gravity was interpolated from observed gravity values.
 JV0581
 JV0581. The following values were computed from the NAD 83(1991) position.
 JV0581
 JV0581;                    North         East     Units Scale Factor Converg.
 JV0581;SPC MD       -   177,577.259   436,412.491   MT  0.99997294   +0 15 53.4
 JV0581;SPC MD       -   582,601.39  1,431,796.65   sFT  0.99997294   +0 15 53.4
 JV0581;UTM  18      - 4,347,439.600   363,861.440   MT  0.99982820   -0 59 56.2
 JV0581
 JV0581!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0581!SPC MD       -   1.00000498  x   0.99997294  =   0.99997792
 JV0581!UTM  18      -   1.00000498  x   0.99982820  =   0.99983318
 JV0581
 JV0581:                Primary Azimuth Mark                     Grid Az
 JV0581:SPC MD       -  PENN RR CO TANK                          068 34 10.1
 JV0581:UTM  18      -  PENN RR CO TANK                          069 49 59.7
 JV0581
 JV0581_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6386147439(NAD 83)
 JV0581
 JV0581|---------------------------------------------------------------------|
 JV0581| PID    Reference Object                     Distance      Geod. Az  |
 JV0581|                                                           dddmmss.s |
 JV0581| JV5529 PENN RR CO TANK                     APPROX. 0.8 KM 0685003.5 |
 JV0581| JV5466 BALTIMORE NATIONAL GYPSUM STK       APPROX. 2.1 KM 0944143.7 |
 JV0581|---------------------------------------------------------------------|
 JV0581
 JV0581                          SUPERSEDED SURVEY CONTROL
 JV0581
 JV0581  NAD 83(1986)-  39 15 56.21053(N)    076 34 41.04533(W) AD(       ) 3
 JV0581  NAD 27      -  39 15 55.82200(N)    076 34 42.16500(W) AD(       ) 3
 JV0581  USSD        -  39 15 56.18800(N)    076 34 42.00300(W) AD(       ) 3
 JV0581  NAVD 88 (06/15/91)    1.103  (m)            3.62   (f) SUPERSEDED  1 1
 JV0581  NGVD 29               1.35   (m)            4.4    (f) LEVELING    3  
 JV0581  NGVD 29 (11/26/84)    1.342  (m)            4.40   (f) ADJUSTED    1 1
 JV0581
 JV0581.Superseded values are not recommended for survey control.
 JV0581
 JV0581.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0581.See file dsdata.pdf to determine how the superseded data were derived.
 JV0581
 JV0581_MARKER: X = CHISELED CROSS
 JV0581_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0581_SP_SET: SEAWALL
 JV0581_STAMPING: NONE
 JV0581_MARK LOGO: NONE
 JV0581_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0581_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0581+STABILITY: SURFACE MOTION
 JV0581_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0581+SATELLITE: SATELLITE OBSERVATIONS - August 09, 2015
 JV0581
 JV0581  HISTORY     - Date     Condition        Report By
 JV0581  HISTORY     - 1886     MONUMENTED       CGS
 JV0581  HISTORY     - 1915     GOOD             CGS
 JV0581  HISTORY     - 1934     GOOD             CGS
 JV0581  HISTORY     - 1971     GOOD             NGS
 JV0581  HISTORY     - 1975     GOOD             NGS
 JV0581  HISTORY     - 19880728 GOOD             MDDNR
 JV0581  HISTORY     - 20020715 GOOD             NGS
 JV0581  HISTORY     - 20060725 GOOD             NGS
 JV0581  HISTORY     - 20110315 GOOD             GEOCAC
 JV0581  HISTORY     - 20150809 GOOD             GIRL
 JV0581
 JV0581                          STATION DESCRIPTION
 JV0581
 JV0581'DESCRIBED BY COAST AND GEODETIC SURVEY 1915
 JV0581'AT FORT MC HENRY ON THE COPING STONE OF THE SEA WALL, ON THE NE
 JV0581'SIDE OF THE FORT, AT THE FIRST ANGLE IN THE WALL SE OF THE
 JV0581'QUARTERMASTERS WHARF.  STATION MARK IS A CROSS CUT IN THE GRANITE
 JV0581'CAPSTONE.  IT IS REFERENCED TO THE ANGLES OF THE STONE AS
 JV0581'FOLLOWS--TO NE CORNER OF STONE, 2.31 FEET.  TO SE CORNER 2.85
 JV0581'FEET, AND TO OUTSIDE ANGLE OF STONE, 2.20 FEET.
 JV0581
 JV0581                          STATION RECOVERY (1934)
 JV0581
 JV0581'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV0581'THE STATION AND REFERENCE MARKS WERE FOUND AS DESCRIBED IN GOOD
 JV0581'CONDITION.  STATION MARK IS A CROSS CUT IN THE GRANITE CAPSTONE
 JV0581'AND IS REFERENCED TO THE ANGLES OF THE STONE.
 JV0581
 JV0581                          STATION RECOVERY (1971)
 JV0581
 JV0581'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0581'AT BALTIMORE.
 JV0581'AT FORT MC HENRY, AT THE FIRST ANGLE OF THE SEA WALL EAST OF THE
 JV0581'CORPS OF ENGINEERS, U.S. ARMY, WHARF, AT THE SECOND ANGLE OF THE
 JV0581'SEA WALL NORTHWEST OF THE FORT MC HENRY CHANNEL FRONT RANGE
 JV0581'LIGHT, AND ON THE TOP OF THE WALL.  A CHISELED CROSS.
 JV0581
 JV0581                          STATION RECOVERY (1975)
 JV0581
 JV0581'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV0581'THE STATION IS A CHISELED CROSS IN THE GRANITE CAPSTONE OF THE
 JV0581'BULKHEAD OR SEAWALL SURROUNDING FORT MC HENRY.  THE STATION WAS
 JV0581'RECOVERED AS DESCRIBED BY O.H.T. 1886, 1915 EXCEPT THAT
 JV0581'QUARTERMASTER WHARF SHOULD NOW READ BALTIMORE FIRE DEPARTMENT
 JV0581'DOCKS, AS THERE IS NO REFERENCE TO ANY QUARTERMASTERS WHARF AT
 JV0581'THIS DATE.
 JV0581
 JV0581                          STATION RECOVERY (1988)
 JV0581
 JV0581'RECOVERY NOTE BY MD DEPT OF NAT RES 1988 (LW)
 JV0581'RECOVERED IN GOOD CONDITION.
 JV0581
 JV0581                          STATION RECOVERY (2002)
 JV0581
 JV0581'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (JGE)
 JV0581'RECOVERED IN GOOD CONDITION.
 JV0581
 JV0581                          STATION RECOVERY (2006)
 JV0581
 JV0581'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV0581'RECOVERED AS DESCRIBED.
 JV0581
 JV0581                          STATION RECOVERY (2011)
 JV0581
 JV0581'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV0581'RECOVERED IN GOOD CONDITION.
 JV0581
 JV0581                          STATION RECOVERY (2015)
 JV0581
 JV0581'RECOVERY NOTE BY GIRL SCOUTS OF AMERICA 2015 (EAW)
 JV0581'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0579 ***********************************************************************
 JV0579  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0579  DESIGNATION -  857 4680 TIDAL 27
 JV0579  PID         -  JV0579
 JV0579  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0579  COUNTRY     -  US
 JV0579  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0579
 JV0579                         *CURRENT SURVEY CONTROL
 JV0579  ______________________________________________________________________
 JV0579* NAD 83(1986) POSITION- 39 15 47.37   (N) 076 34 43.89   (W)   HD_HELD1
 JV0579* NAVD 88 ORTHO HEIGHT -     9.162 (meters)       30.06  (feet) ADJUSTED
 JV0579  ______________________________________________________________________
 JV0579  GEOID HEIGHT    -        -32.855 (meters)                     GEOID18
 JV0579  DYNAMIC HEIGHT  -          9.157 (meters)       30.04  (feet) COMP
 JV0579  MODELED GRAVITY -    980,099.2   (mgal)                       NAVD 88
 JV0579
 JV0579  VERT ORDER      -  SECOND    CLASS I
 JV0579
 JV0579.The horizontal coordinates were determined by differentially corrected
 JV0579.hand held GPS observations or other comparable positioning techniques
 JV0579.and have an estimated accuracy of +/- 3 meters.
 JV0579
 JV0579.The orthometric height was determined by differential leveling and
 JV0579.adjusted by the NATIONAL GEODETIC SURVEY
 JV0579.in June 2008.
 JV0579
 JV0579.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0579.GEOID18 height accuracy estimate available here.
 JV0579
 JV0579.This Tidal Bench Mark is designated as VM 429
 JV0579.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0579
 JV0579.This Tidal Bench Mark is designated as VM 17480
 JV0579.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0579
 JV0579.Click photographs - Photos may exist for this station.
 JV0579
 JV0579.The dynamic height is computed by dividing the NAVD 88
 JV0579.geopotential number by the normal gravity value computed on the
 JV0579.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0579.degrees latitude (g = 980.6199 gals.).
 JV0579
 JV0579.The modeled gravity was interpolated from observed gravity values.
 JV0579
 JV0579;                    North         East    Units  Estimated Accuracy
 JV0579;SPC MD       -   177,304.2     436,345.3     MT  (+/- 3 meters HH1 GPS) 
 JV0579
 JV0579_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6378847168(NAD 83)
 JV0579
 JV0579                          SUPERSEDED SURVEY CONTROL
 JV0579
 JV0579  NAVD 88 (06/15/91)    9.158  (m)           30.05   (f) SUPERSEDED  1 1
 JV0579  NGVD 29 (11/26/84)    9.398  (m)           30.83   (f) ADJUSTED    1 1
 JV0579
 JV0579.Superseded values are not recommended for survey control.
 JV0579
 JV0579.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0579.See file dsdata.pdf to determine how the superseded data were derived.
 JV0579
 JV0579_MARKER: DB = BENCH MARK DISK
 JV0579_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0579_SP_SET: GRANITE CANNON FOUNDATION
 JV0579_STAMPING: 27 1922
 JV0579_MARK LOGO: CGS
 JV0579_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0579_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0579_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0579+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2014
 JV0579
 JV0579  HISTORY     - Date     Condition        Report By
 JV0579  HISTORY     - 1922     MONUMENTED       CGS
 JV0579  HISTORY     - 1971     GOOD             NGS
 JV0579  HISTORY     - 1976     GOOD             NGS
 JV0579  HISTORY     - 20020715 GOOD             NGS
 JV0579  HISTORY     - 20060725 GOOD             NGS
 JV0579  HISTORY     - 20110315 GOOD             GEOCAC
 JV0579  HISTORY     - 20140605 GOOD             USPSQD
 JV0579
 JV0579                          STATION DESCRIPTION
 JV0579
 JV0579'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0579'AT BALTIMORE.
 JV0579'AT BALTIMORE, AT THE SOUTHEAST POINT OF FORT MC HENRY, NEAR THE
 JV0579'SOUTHEAST SIDE OF THE STAR FORT, BETWEEN THE INNER AND OUTER
 JV0579'PROTECTIVE WALLS OF THE FORT, SET IN THE TOP OF THE NORTH
 JV0579'SIDE OF THE OCTAGON-SHAPED GRANITE FOUNDATION FOR THE LARGEST AND
 JV0579'MOST EASTERLY OF SEVERAL CANNONS AROUND THE FORT.
 JV0579
 JV0579                          STATION RECOVERY (1976)
 JV0579
 JV0579'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
 JV0579'RECOVERED IN GOOD CONDITION.
 JV0579
 JV0579                          STATION RECOVERY (2002)
 JV0579
 JV0579'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (JGE)
 JV0579'MARKER CODE IS INCORRECT -- MARKER IS A USCGS BM DISK.
 JV0579
 JV0579                          STATION RECOVERY (2006)
 JV0579
 JV0579'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV0579'RECOVERED AS DESCRIBED.
 JV0579
 JV0579                          STATION RECOVERY (2011)
 JV0579
 JV0579'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV0579'RECOVERED IN GOOD CONDITION.
 JV0579
 JV0579                          STATION RECOVERY (2014)
 JV0579
 JV0579'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV0579'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0580 ***********************************************************************
 JV0580  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0580  DESIGNATION -  857 4680 TIDAL 28
 JV0580  PID         -  JV0580
 JV0580  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0580  COUNTRY     -  US
 JV0580  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0580
 JV0580                         *CURRENT SURVEY CONTROL
 JV0580  ______________________________________________________________________
 JV0580* NAD 83(1986) POSITION- 39 15 50.13   (N) 076 34 39.67   (W)   HD_HELD1
 JV0580* NAVD 88 ORTHO HEIGHT -     1.858 (meters)        6.10  (feet) ADJUSTED
 JV0580  ______________________________________________________________________
 JV0580  GEOID HEIGHT    -        -32.857 (meters)                     GEOID18
 JV0580  DYNAMIC HEIGHT  -          1.857 (meters)        6.09  (feet) COMP
 JV0580  MODELED GRAVITY -    980,099.2   (mgal)                       NAVD 88
 JV0580
 JV0580  VERT ORDER      -  SECOND    CLASS I
 JV0580
 JV0580.The horizontal coordinates were determined by differentially corrected
 JV0580.hand held GPS observations or other comparable positioning techniques
 JV0580.and have an estimated accuracy of +/- 3 meters.
 JV0580
 JV0580.The orthometric height was determined by differential leveling and
 JV0580.adjusted by the NATIONAL GEODETIC SURVEY
 JV0580.in June 2008.
 JV0580
 JV0580.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0580.GEOID18 height accuracy estimate available here.
 JV0580
 JV0580.This Tidal Bench Mark is designated as VM 430
 JV0580.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0580
 JV0580.This Tidal Bench Mark is designated as VM 17481
 JV0580.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0580
 JV0580.Click photographs - Photos may exist for this station.
 JV0580
 JV0580.The dynamic height is computed by dividing the NAVD 88
 JV0580.geopotential number by the normal gravity value computed on the
 JV0580.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0580.degrees latitude (g = 980.6199 gals.).
 JV0580
 JV0580.The modeled gravity was interpolated from observed gravity values.
 JV0580
 JV0580;                    North         East    Units  Estimated Accuracy
 JV0580;SPC MD       -   177,389.8     436,446.1     MT  (+/- 3 meters HH1 GPS) 
 JV0580
 JV0580_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6389047251(NAD 83)
 JV0580
 JV0580                          SUPERSEDED SURVEY CONTROL
 JV0580
 JV0580  NAVD 88 (06/15/91)    1.847  (m)            6.06   (f) SUPERSEDED  1 1
 JV0580  NGVD 29 (11/26/84)    2.085  (m)            6.84   (f) ADJUSTED    1 1
 JV0580
 JV0580.Superseded values are not recommended for survey control.
 JV0580
 JV0580.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0580.See file dsdata.pdf to determine how the superseded data were derived.
 JV0580
 JV0580_MARKER: DB = BENCH MARK DISK
 JV0580_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0580_SP_SET: TOWER FOOTING
 JV0580_STAMPING: 28 1922
 JV0580_MARK LOGO: CGS
 JV0580_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0580_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0580_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0580+SATELLITE: SATELLITE OBSERVATIONS - June 25, 2014
 JV0580
 JV0580  HISTORY     - Date     Condition        Report By
 JV0580  HISTORY     - 1922     MONUMENTED       CGS
 JV0580  HISTORY     - 1954     MARK NOT FOUND   CGS
 JV0580  HISTORY     - 1971     GOOD             NGS
 JV0580  HISTORY     - 20060725 GOOD             NGS
 JV0580  HISTORY     - 20110315 GOOD             GEOCAC
 JV0580  HISTORY     - 20140605 GOOD             USPSQD
 JV0580  HISTORY     - 20140625 GOOD             BASE9
 JV0580
 JV0580                          STATION DESCRIPTION
 JV0580
 JV0580'DESCRIBED BY COAST AND GEODETIC SURVEY 1954
 JV0580'AT BALTIMORE.
 JV0580'AT FORT MC HENRY, AT MC HENRY RANGE, ON THE FOUNDATION OF THE
 JV0580'EAST LEG OF THE FRONT RANGE BEACON, AND IN THE EAST CORNER OF THE
 JV0580'SUB-BASE OF THIS FOUNDATION (NOT ON THE VISIBLE TOP FOUNDATION.)
 JV0580'A STANDARD DISK, STAMPED 28 1922.  NOTE-- THIS SUB-BASE IS
 JV0580'GENERALLY UNDER 4 INCHES OF SOD, AND IS LOCATED SEVERAL YARDS
 JV0580'BACK FROM THE SEA WALL.  IT WAS REPORTED IN NOVEMBER 1951 THAT
 JV0580'THE BENCH MARK IS NOW UNCOVERED FROM 4 FEET OF SPOIL FORMERLY
 JV0580'OVER THE SITE.  IT IS ABOUT 4 INCHES BELOW THE PRESENT GROUND
 JV0580'LEVEL.
 JV0580
 JV0580                          STATION RECOVERY (1971)
 JV0580
 JV0580'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0580'RECOVERED IN GOOD CONDITION.
 JV0580
 JV0580                          STATION RECOVERY (2006)
 JV0580
 JV0580'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV0580'RECOVERED IN GOOD CONDITION 9 INCHES (23 CM) BELOW GROUND.  A PVC PIPE
 JV0580'WITH WOODEN COVER WAS PLACED OVER THE MARK TO FACILITATE RECOVERY.
 JV0580'THIS IS AT THE TOWER LEG THAT IS CLOSEST TO THE SEAWALL.  TOWER SITS
 JV0580'DIAGONALLY TO THE SEAWALL.
 JV0580
 JV0580                          STATION RECOVERY (2011)
 JV0580
 JV0580'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV0580'RECOVERED IN GOOD CONDITION.
 JV0580
 JV0580                          STATION RECOVERY (2014)
 JV0580
 JV0580'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV0580'RECOVERED IN GOOD CONDITION.
 JV0580
 JV0580                          STATION RECOVERY (2014)
 JV0580
 JV0580'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 JV0580'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0582 ***********************************************************************
 JV0582  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0582  DESIGNATION -  857 4680 TIDAL 29
 JV0582  PID         -  JV0582
 JV0582  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0582  COUNTRY     -  US
 JV0582  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0582
 JV0582                         *CURRENT SURVEY CONTROL
 JV0582  ______________________________________________________________________
 JV0582* NAD 83(1986) POSITION- 39 15 57.75   (N) 076 34 43.50   (W)   HD_HELD1
 JV0582* NAVD 88 ORTHO HEIGHT -     1.150 (meters)        3.77  (feet) ADJUSTED
 JV0582  ______________________________________________________________________
 JV0582  GEOID HEIGHT    -        -32.851 (meters)                     GEOID18
 JV0582  DYNAMIC HEIGHT  -          1.149 (meters)        3.77  (feet) COMP
 JV0582  MODELED GRAVITY -    980,099.5   (mgal)                       NAVD 88
 JV0582
 JV0582  VERT ORDER      -  SECOND    CLASS I
 JV0582
 JV0582.The horizontal coordinates were determined by differentially corrected
 JV0582.hand held GPS observations or other comparable positioning techniques
 JV0582.and have an estimated accuracy of +/- 3 meters.
 JV0582
 JV0582.The orthometric height was determined by differential leveling and
 JV0582.adjusted by the NATIONAL GEODETIC SURVEY
 JV0582.in June 2008.
 JV0582
 JV0582.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0582.GEOID18 height accuracy estimate available here.
 JV0582
 JV0582.This Tidal Bench Mark is designated as VM 431
 JV0582.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0582
 JV0582.Click photographs - Photos may exist for this station.
 JV0582
 JV0582.The dynamic height is computed by dividing the NAVD 88
 JV0582.geopotential number by the normal gravity value computed on the
 JV0582.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0582.degrees latitude (g = 980.6199 gals.).
 JV0582
 JV0582.The modeled gravity was interpolated from observed gravity values.
 JV0582
 JV0582;                    North         East    Units  Estimated Accuracy
 JV0582;SPC MD       -   177,624.3     436,353.2     MT  (+/- 3 meters HH1 GPS) 
 JV0582
 JV0582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6380347487(NAD 83)
 JV0582
 JV0582                          SUPERSEDED SURVEY CONTROL
 JV0582
 JV0582  NAVD 88 (06/15/91)    1.148  (m)            3.77   (f) SUPERSEDED  1 1
 JV0582  NGVD 29 (11/26/84)    1.387  (m)            4.55   (f) ADJUSTED    1 1
 JV0582
 JV0582.Superseded values are not recommended for survey control.
 JV0582
 JV0582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0582.See file dsdata.pdf to determine how the superseded data were derived.
 JV0582
 JV0582_MARKER: DB = BENCH MARK DISK
 JV0582_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0582_SP_SET: SEAWALL
 JV0582_STAMPING: 29 1922
 JV0582_MARK LOGO: CGS
 JV0582_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0582_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0582+STABILITY: SURFACE MOTION
 JV0582_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0582+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV0582
 JV0582  HISTORY     - Date     Condition        Report By
 JV0582  HISTORY     - 1922     MONUMENTED       CGS
 JV0582  HISTORY     - 1971     GOOD             NGS
 JV0582  HISTORY     - 1976     GOOD             NGS
 JV0582  HISTORY     - 19951128 GOOD             NOS
 JV0582  HISTORY     - 20040714 GOOD             GEOCAC
 JV0582  HISTORY     - 20060522 GOOD             NGS
 JV0582  HISTORY     - 20060725 GOOD             NGS
 JV0582  HISTORY     - 20110315 GOOD             GEOCAC
 JV0582
 JV0582                          STATION DESCRIPTION
 JV0582
 JV0582'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0582'AT BALTIMORE.
 JV0582'AT FORT MC HENRY, 18 FEET SOUTHEAST OF THE CORPS OF ENGINEERS,
 JV0582'U.S. ARMY, WHARF, AND IN THE TOP OF THE GRANITE COPING OF THE
 JV0582'SEA WALL.  A STANDARD DISK, STAMPED 29 1922.
 JV0582
 JV0582                          STATION RECOVERY (1976)
 JV0582
 JV0582'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
 JV0582'RECOVERED IN GOOD CONDITION.
 JV0582
 JV0582                          STATION RECOVERY (1995)
 JV0582
 JV0582'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1995 (RFE)
 JV0582'THE BENCH MARK IS SET IN THE GRANITE SEA WALL COPING LOCATED AT THE SE
 JV0582'END OF THE COE COMPOUND AT FORT MCHENRY, 18.7 M (61.4 FT) NORTH OF THE
 JV0582'FIRE DEPT BARRACKS DOORWAY (BUILDING 2609), 8.1 M (26.6 FT) SE OF THE
 JV0582'CENTERLINE OF THE FIRE DEPT PIER, AND 0.3 M (1.0 FT) SOUTH OF THE
 JV0582'NORTH EDGE OF THE SEA WALL.
 JV0582
 JV0582                          STATION RECOVERY (2004)
 JV0582
 JV0582'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV0582'RECOVERED IN GOOD CONDITION.
 JV0582
 JV0582                          STATION RECOVERY (2006)
 JV0582
 JV0582'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DW)
 JV0582'RECOVERED IN GOOD CONDITION.
 JV0582
 JV0582                          STATION RECOVERY (2006)
 JV0582
 JV0582'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV0582'REC0VERED AS DESCRIBED PER 1995 RECOVERY NOTE THAT REFERS TO 8.1 M
 JV0582'(26.6 FT) SOUTHEAST OF THE FIRE DEPARTMENT PIER.
 JV0582
 JV0582                          STATION RECOVERY (2011)
 JV0582
 JV0582'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV0582'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0584 ***********************************************************************
 JV0584  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0584  DESIGNATION -  857 4680 TIDAL 30
 JV0584  PID         -  JV0584
 JV0584  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0584  COUNTRY     -  US
 JV0584  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0584
 JV0584                         *CURRENT SURVEY CONTROL
 JV0584  ______________________________________________________________________
 JV0584* NAD 83(1986) POSITION- 39 15 56.91   (N) 076 34 45.18   (W)   HD_HELD1
 JV0584* NAVD 88 ORTHO HEIGHT -     2.559 (meters)        8.40  (feet) ADJUSTED
 JV0584  ______________________________________________________________________
 JV0584  GEOID HEIGHT    -        -32.850 (meters)                     GEOID18
 JV0584  DYNAMIC HEIGHT  -          2.557 (meters)        8.39  (feet) COMP
 JV0584  MODELED GRAVITY -    980,099.5   (mgal)                       NAVD 88
 JV0584
 JV0584  VERT ORDER      -  FIRST     CLASS I
 JV0584
 JV0584.The horizontal coordinates were determined by differentially corrected
 JV0584.hand held GPS observations or other comparable positioning techniques
 JV0584.and have an estimated accuracy of +/- 3 meters.
 JV0584
 JV0584.The orthometric height was determined by differential leveling and
 JV0584.adjusted by the NATIONAL GEODETIC SURVEY
 JV0584.in June 1991.
 JV0584
 JV0584.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0584.GEOID18 height accuracy estimate available here.
 JV0584
 JV0584.This Tidal Bench Mark is designated as VM 432
 JV0584.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0584
 JV0584.Click photographs - Photos may exist for this station.
 JV0584
 JV0584.The dynamic height is computed by dividing the NAVD 88
 JV0584.geopotential number by the normal gravity value computed on the
 JV0584.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0584.degrees latitude (g = 980.6199 gals.).
 JV0584
 JV0584.The modeled gravity was interpolated from observed gravity values.
 JV0584
 JV0584;                    North         East    Units  Estimated Accuracy
 JV0584;SPC MD       -   177,598.3     436,313.1     MT  (+/- 3 meters HH1 GPS) 
 JV0584
 JV0584_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6376247462(NAD 83)
 JV0584
 JV0584                          SUPERSEDED SURVEY CONTROL
 JV0584
 JV0584  NGVD 29 (11/26/84)    2.797  (m)            9.18   (f) ADJUSTED    1 1
 JV0584
 JV0584.Superseded values are not recommended for survey control.
 JV0584
 JV0584.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0584.See file dsdata.pdf to determine how the superseded data were derived.
 JV0584
 JV0584_MARKER: DB = BENCH MARK DISK
 JV0584_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV0584_SP_SET: DOORSILL
 JV0584_STAMPING: 30 1922
 JV0584_MARK LOGO: CGS
 JV0584_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0584_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0584+STABILITY: SURFACE MOTION
 JV0584_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0584+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV0584
 JV0584  HISTORY     - Date     Condition        Report By
 JV0584  HISTORY     - 1922     MONUMENTED       CGS
 JV0584  HISTORY     - 1971     GOOD             NGS
 JV0584  HISTORY     - 19951128 GOOD             NOS
 JV0584  HISTORY     - 20040714 GOOD             GEOCAC
 JV0584  HISTORY     - 20060522 GOOD             NGS
 JV0584  HISTORY     - 20060725 GOOD             NGS
 JV0584  HISTORY     - 20110315 GOOD             GEOCAC
 JV0584
 JV0584                          STATION DESCRIPTION
 JV0584
 JV0584'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0584'AT BALTIMORE.
 JV0584'AT BALTIMORE, AT FORT MC HENRY, NEAR THE SOUTHEAST PIER OF THE
 JV0584'U.S. CORPS OF ENGINEERS WHARF, AT THE SOUTHEAST END OF THE
 JV0584'U.S. CORPS OF ENGINEERS STOREHOUSE, SET IN THE TOP OF THE
 JV0584'NORTHEAST END OF THE GRANITE DOORSILL, 7 FEET SOUTHWEST OF THE
 JV0584'EAST CORNER OF THE BUILDING, 153 FEET WEST OF THE SOUTHWEST END
 JV0584'OF THE PIER, AND ABOUT 3 1/2 FEET ABOVE THE LEVEL OF THE GROUND.
 JV0584
 JV0584                          STATION RECOVERY (1995)
 JV0584
 JV0584'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1995 (RFE)
 JV0584'THE BENCH MARK IS SET IN THE TOP OF A GRANITE DOOR SILL LOCATED IN THE
 JV0584'COE COMPOUND AT FORT MCHENRY, 6.1 M (20.0 FT) WEST OF THE CENTERLINE
 JV0584'OF A PAVED ROAD BETWEEN THE FIRE BARRACKS AND SOIL LABORATORY, 2.0 M
 JV0584'(6.6 FT) SOUTH OF THE NE CORNER OF THE BUILDING, AND 1 M (3.3 FT)
 JV0584'ABOVE GRADE.
 JV0584
 JV0584                          STATION RECOVERY (2004)
 JV0584
 JV0584'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV0584'RECOVERED IN GOOD CONDITION.
 JV0584
 JV0584                          STATION RECOVERY (2006)
 JV0584
 JV0584'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DW)
 JV0584'RECOVERED IN GOOD CONDITION.
 JV0584
 JV0584                          STATION RECOVERY (2006)
 JV0584
 JV0584'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV0584'RECOVERED AS DESCRIBED.
 JV0584
 JV0584                          STATION RECOVERY (2011)
 JV0584
 JV0584'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV0584'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0585 ***********************************************************************
 JV0585  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0585  DESIGNATION -  857 4680 TIDAL 31
 JV0585  PID         -  JV0585
 JV0585  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0585  COUNTRY     -  US
 JV0585  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0585
 JV0585                         *CURRENT SURVEY CONTROL
 JV0585  ______________________________________________________________________
 JV0585* NAD 83(1986) POSITION- 39 16 01.05   (N) 076 34 50.07   (W)   HD_HELD1
 JV0585* NAVD 88 ORTHO HEIGHT -     1.637 (meters)        5.37  (feet) ADJUSTED
 JV0585  ______________________________________________________________________
 JV0585  GEOID HEIGHT    -        -32.845 (meters)                     GEOID18
 JV0585  DYNAMIC HEIGHT  -          1.637 (meters)        5.37  (feet) COMP
 JV0585  MODELED GRAVITY -    980,099.7   (mgal)                       NAVD 88
 JV0585
 JV0585  VERT ORDER      -  FIRST     CLASS I
 JV0585
 JV0585.The horizontal coordinates were determined by differentially corrected
 JV0585.hand held GPS observations or other comparable positioning techniques
 JV0585.and have an estimated accuracy of +/- 3 meters.
 JV0585
 JV0585.The orthometric height was determined by differential leveling and
 JV0585.adjusted by the NATIONAL GEODETIC SURVEY
 JV0585.in June 1991.
 JV0585
 JV0585.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0585.GEOID18 height accuracy estimate available here.
 JV0585
 JV0585.This Tidal Bench Mark is designated as VM 433
 JV0585.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0585
 JV0585.Click photographs - Photos may exist for this station.
 JV0585
 JV0585.The dynamic height is computed by dividing the NAVD 88
 JV0585.geopotential number by the normal gravity value computed on the
 JV0585.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0585.degrees latitude (g = 980.6199 gals.).
 JV0585
 JV0585.The modeled gravity was interpolated from observed gravity values.
 JV0585
 JV0585;                    North         East    Units  Estimated Accuracy
 JV0585;SPC MD       -   177,725.4     436,195.3     MT  (+/- 3 meters HH1 GPS) 
 JV0585
 JV0585_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6364747592(NAD 83)
 JV0585
 JV0585                          SUPERSEDED SURVEY CONTROL
 JV0585
 JV0585  NGVD 29 (11/26/84)    1.876  (m)            6.15   (f) ADJUSTED    1 1
 JV0585
 JV0585.Superseded values are not recommended for survey control.
 JV0585
 JV0585.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0585.See file dsdata.pdf to determine how the superseded data were derived.
 JV0585
 JV0585_MARKER: DB = BENCH MARK DISK
 JV0585_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV0585_SP_SET: GRANITE DOOR SILL
 JV0585_STAMPING: 31 1922
 JV0585_MARK LOGO: CGS
 JV0585_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0585_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0585+STABILITY: SURFACE MOTION
 JV0585_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0585+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV0585
 JV0585  HISTORY     - Date     Condition        Report By
 JV0585  HISTORY     - 1922     MONUMENTED       CGS
 JV0585  HISTORY     - 1971     GOOD             NGS
 JV0585  HISTORY     - 1976     GOOD             NGS
 JV0585  HISTORY     - 19951128 GOOD             NOS
 JV0585  HISTORY     - 20040714 GOOD             GEOCAC
 JV0585  HISTORY     - 20060725 GOOD             NGS
 JV0585  HISTORY     - 20110315 GOOD             GEOCAC
 JV0585
 JV0585                          STATION DESCRIPTION
 JV0585
 JV0585'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0585'AT BALTIMORE.
 JV0585'AT BALTIMORE, AT FORT MC HENRY, AT THE U.S. NAVAL RESERVE
 JV0585'TRAINING CENTER, SET IN THE TOP OF THE GRANITE DOORSILL ON THE
 JV0585'SOUTHWEST SIDE OF BUILDING FOUR, AT THE INTERSECTION OF HALSEY
 JV0585'ROAD AND LEAHY STREET, 19 FEET NORTHEAST OF THE CENTER LINE OF THE
 JV0585'STREET, 22 FEET NORTHWEST OF THE SOUTH CORNER OF THE BUILDING, AND
 JV0585'ABOUT 2 FEET ABOVE THE LEVEL OF THE GROUND.
 JV0585
 JV0585                          STATION RECOVERY (1976)
 JV0585
 JV0585'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
 JV0585'RECOVERED IN GOOD CONDITION.
 JV0585
 JV0585                          STATION RECOVERY (1995)
 JV0585
 JV0585'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1995 (RFE)
 JV0585'THE BENCH MARK IS SET IN THE GRANITE DOORSILL ON THE SW SIDE OF THE US
 JV0585'NAVAL RESERVE BOILER ROOM (BUILDING 4) LOCATED AT FORT MCHENRY, 13.6 M
 JV0585'(44.6 FT) NORTH OF THE NW CORNER OF THE MAIN US NAVAL RESERVE
 JV0585'BUILDING, 6.7 M (22.0 FT) NW OF THE SOUTH CORNER OF BUILDING 4, 5.5 M
 JV0585'(18.0 FT) NNE OF THE ROAD CENTERLINE, 1.4 M (4.6 FT) NW OF THE EDGE OF
 JV0585'THE TOP STEP, AND 1 M (3.3 FT) ABOVE GRADE.
 JV0585
 JV0585                          STATION RECOVERY (2004)
 JV0585
 JV0585'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV0585'RECOVERED IN GOOD CONDITION.
 JV0585
 JV0585                          STATION RECOVERY (2006)
 JV0585
 JV0585'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV0585'RECOVERED AS DESCRIBED.
 JV0585
 JV0585                          STATION RECOVERY (2011)
 JV0585
 JV0585'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV0585'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0586 ***********************************************************************
 JV0586  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0586  DESIGNATION -  857 4680 TIDAL 32
 JV0586  PID         -  JV0586
 JV0586  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0586  COUNTRY     -  US
 JV0586  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0586
 JV0586                         *CURRENT SURVEY CONTROL
 JV0586  ______________________________________________________________________
 JV0586* NAD 83(1986) POSITION- 39 15 59.3    (N) 076 34 51.0    (W)   HD_HELD2
 JV0586* NAVD 88 ORTHO HEIGHT -     1.655 (meters)        5.43  (feet) ADJUSTED
 JV0586  ______________________________________________________________________
 JV0586  GEOID HEIGHT    -        -32.846 (meters)                     GEOID18
 JV0586  DYNAMIC HEIGHT  -          1.654 (meters)        5.43  (feet) COMP
 JV0586  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV0586
 JV0586  VERT ORDER      -  FIRST     CLASS I
 JV0586
 JV0586.The horizontal coordinates were established by autonomous hand held GPS
 JV0586.observations and have an estimated accuracy of +/- 10 meters.
 JV0586
 JV0586.The orthometric height was determined by differential leveling and
 JV0586.adjusted by the NATIONAL GEODETIC SURVEY
 JV0586.in June 1991.
 JV0586
 JV0586.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0586.GEOID18 height accuracy estimate available here.
 JV0586
 JV0586.This Tidal Bench Mark is designated as VM 434
 JV0586.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0586
 JV0586.Click photographs - Photos may exist for this station.
 JV0586
 JV0586.The dynamic height is computed by dividing the NAVD 88
 JV0586.geopotential number by the normal gravity value computed on the
 JV0586.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0586.degrees latitude (g = 980.6199 gals.).
 JV0586
 JV0586.The modeled gravity was interpolated from observed gravity values.
 JV0586
 JV0586;                    North         East    Units  Estimated Accuracy
 JV0586;SPC MD       -   177,671.      436,173.      MT  (+/- 10 meters HH2 GPS)
 JV0586
 JV0586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6362447538(NAD 83)
 JV0586
 JV0586                          SUPERSEDED SURVEY CONTROL
 JV0586
 JV0586  NGVD 29 (11/26/84)    1.894  (m)            6.21   (f) ADJUSTED    1 1
 JV0586
 JV0586.Superseded values are not recommended for survey control.
 JV0586
 JV0586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0586.See file dsdata.pdf to determine how the superseded data were derived.
 JV0586
 JV0586_MARKER: DB = BENCH MARK DISK
 JV0586_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV0586_SP_SET: GRANITE GATE POST
 JV0586_STAMPING: 32 1922
 JV0586_MARK LOGO: CGS
 JV0586_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0586_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0586+STABILITY: SURFACE MOTION
 JV0586_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0586+SATELLITE: SATELLITE OBSERVATIONS - July 25, 2006
 JV0586
 JV0586  HISTORY     - Date     Condition        Report By
 JV0586  HISTORY     - 1922     MONUMENTED       CGS
 JV0586  HISTORY     - 1971     GOOD             NGS
 JV0586  HISTORY     - 1976     GOOD             NGS
 JV0586  HISTORY     - 19951128 GOOD             NOS
 JV0586  HISTORY     - 20040714 GOOD             GEOCAC
 JV0586  HISTORY     - 20060725 GOOD             NGS
 JV0586
 JV0586                          STATION DESCRIPTION
 JV0586
 JV0586'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0586'AT BALTIMORE.
 JV0586'AT BALTIMORE, AT FORT MC HENRY, AT THE U.S. NAVAL RESERVE
 JV0586'TRAINING CENTER, NEAR THE JUNCTION OF HALSEY ROAD AND KING
 JV0586'CIRCLE, SET IN THE TOP OF THE GRANITE FOUNDATION FOR THE NORTHWEST
 JV0586'SIDE OF BUILDING FOUR, 65 FEET NORTHEAST OF THE WEST CORNER OF
 JV0586'THE BUILDING, 19 1/2 FEET NORTHEAST OF THE CENTER OF THE
 JV0586'SOUTHWEST DOORWAY AT THE ENTRANCE TO THE BUILDING, 11 FEET
 JV0586'SOUTHEAST OF THE SOUTHEAST CURB OF HALSEY ROAD, AND ABOUT 1 1/2
 JV0586'FEET ABOVE THE LEVEL OF THE SIDEWALK.
 JV0586
 JV0586                          STATION RECOVERY (1976)
 JV0586
 JV0586'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
 JV0586'RECOVERED IN GOOD CONDITION.
 JV0586
 JV0586                          STATION RECOVERY (1995)
 JV0586
 JV0586'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1995 (RFE)
 JV0586'THE BENCH MARK IS SET IN THE TOP GRANITE SILL OF THE FOUNDATION ON THE
 JV0586'WEST SIDE OF THE US NAVAL RESERVE BUILDING LOCATED AT FORT MCHENRY,
 JV0586'19.8 M (65.0 FT) NORTH OF THE SW CORNER OF THE BUILDING, 10.1 M (33.1
 JV0586'FT) SE OF THE CENTERLINE OF HALSEY ROAD, AND 0.4 M (1.3 FT) ABOVE THE
 JV0586'SIDEWALK.
 JV0586
 JV0586                          STATION RECOVERY (2004)
 JV0586
 JV0586'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV0586'SET IN THE TOP OF THE SILL FOR THE MAIN NAVAL RESERVE CENTER BUILDING,
 JV0586'BUILDING NUMBER THREE, OTHERWISE AS DESCRIBED.
 JV0586
 JV0586                          STATION RECOVERY (2006)
 JV0586
 JV0586'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV0586'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0576 ***********************************************************************
 JV0576  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0576  DESIGNATION -  857 4680 TIDAL 35
 JV0576  PID         -  JV0576
 JV0576  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0576  COUNTRY     -  US
 JV0576  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0576
 JV0576                         *CURRENT SURVEY CONTROL
 JV0576  ______________________________________________________________________
 JV0576* NAD 83(1986) POSITION- 39 15 54.99   (N) 076 35 02.16   (W)   HD_HELD1
 JV0576* NAVD 88 ORTHO HEIGHT -     8.024 (meters)       26.33  (feet) ADJUSTED
 JV0576  ______________________________________________________________________
 JV0576  GEOID HEIGHT    -        -32.840 (meters)                     GEOID18
 JV0576  DYNAMIC HEIGHT  -          8.020 (meters)       26.31  (feet) COMP
 JV0576  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV0576
 JV0576  VERT ORDER      -  FIRST     CLASS I
 JV0576
 JV0576.The horizontal coordinates were determined by differentially corrected
 JV0576.hand held GPS observations or other comparable positioning techniques
 JV0576.and have an estimated accuracy of +/- 3 meters.
 JV0576
 JV0576.The orthometric height was determined by differential leveling and
 JV0576.adjusted by the NATIONAL GEODETIC SURVEY
 JV0576.in June 1991.
 JV0576
 JV0576.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0576.GEOID18 height accuracy estimate available here.
 JV0576
 JV0576.This Tidal Bench Mark is designated as VM 435
 JV0576.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0576
 JV0576.Click photographs - Photos may exist for this station.
 JV0576
 JV0576.The dynamic height is computed by dividing the NAVD 88
 JV0576.geopotential number by the normal gravity value computed on the
 JV0576.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0576.degrees latitude (g = 980.6199 gals.).
 JV0576
 JV0576.The modeled gravity was interpolated from observed gravity values.
 JV0576
 JV0576;                    North         East    Units  Estimated Accuracy
 JV0576;SPC MD       -   177,537.2     435,906.3     MT  (+/- 3 meters HH1 GPS) 
 JV0576
 JV0576_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6335447410(NAD 83)
 JV0576
 JV0576                          SUPERSEDED SURVEY CONTROL
 JV0576
 JV0576  NGVD 29 (11/26/84)    8.263  (m)           27.11   (f) ADJUSTED    1 1
 JV0576
 JV0576.Superseded values are not recommended for survey control.
 JV0576
 JV0576.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0576.See file dsdata.pdf to determine how the superseded data were derived.
 JV0576
 JV0576_MARKER: DB = BENCH MARK DISK
 JV0576_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV0576_SP_SET: DOOR SILL
 JV0576_STAMPING: 35 1922
 JV0576_MARK LOGO: CGS
 JV0576_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0576_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0576+STABILITY: SURFACE MOTION
 JV0576_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0576+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2014
 JV0576
 JV0576  HISTORY     - Date     Condition        Report By
 JV0576  HISTORY     - 1922     MONUMENTED       CGS
 JV0576  HISTORY     - 1971     GOOD             NGS
 JV0576  HISTORY     - 19971027 MARK NOT FOUND   USPSQD
 JV0576  HISTORY     - 20020715 GOOD             NGS
 JV0576  HISTORY     - 20060318 GOOD             GEOCAC
 JV0576  HISTORY     - 20060725 GOOD             NGS
 JV0576  HISTORY     - 20110315 GOOD             GEOCAC
 JV0576  HISTORY     - 20140605 GOOD             USPSQD
 JV0576
 JV0576                          STATION DESCRIPTION
 JV0576
 JV0576'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0576'AT BALTIMORE.
 JV0576'AT BALTIMORE, ON FORT AVENUE, AT THE ENTRANCE TO FORT MC HENRY,
 JV0576'AT A BUILDING AT 2101 EAST FORT AVENUE USED FOR OFFICES OF THE
 JV0576'SOUTHERN STATES COOPERATIVE MILLS, INC., ON THE RIGHT-HAND SIDE
 JV0576'OF THE GRANITE SILL AT THE MAIN ENTRANCE, AND ABOUT 40 PACES
 JV0576'BACK FROM THE CURB OF FORT AVENUE.  A STANDARD DISK, STAMPED
 JV0576'35 1922.
 JV0576
 JV0576                          STATION RECOVERY (1997)
 JV0576
 JV0576'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0576'MARK NOT FOUND.
 JV0576
 JV0576                          STATION RECOVERY (2002)
 JV0576
 JV0576'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (JGE)
 JV0576'RECOVERED IN GOOD CONDITION.
 JV0576
 JV0576                          STATION RECOVERY (2006)
 JV0576
 JV0576'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 JV0576'RECOVERED IN GOOD CONDITION.
 JV0576
 JV0576                          STATION RECOVERY (2006)
 JV0576
 JV0576'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV0576'RECOVERED AS DESCRIBED.
 JV0576
 JV0576                          STATION RECOVERY (2011)
 JV0576
 JV0576'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV0576'RECOVERED IN GOOD CONDITION.
 JV0576
 JV0576                          STATION RECOVERY (2014)
 JV0576
 JV0576'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV0576'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0578 ***********************************************************************
 JV0578  FBN         -  This is a Federal Base Network Control Station.
 JV0578  TIDAL BM    -  This is a Tidal Bench Mark.
 JV0578  DESIGNATION -  857 4680 TIDAL BASIC
 JV0578  PID         -  JV0578
 JV0578  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0578  COUNTRY     -  US
 JV0578  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0578
 JV0578                         *CURRENT SURVEY CONTROL
 JV0578  ______________________________________________________________________
 JV0578* NAD 83(2011) POSITION- 39 15 50.88809(N) 076 34 51.83402(W)   ADJUSTED
 JV0578* NAD 83(2011) ELLIP HT-   -23.598 (meters)        (06/27/12)   ADJUSTED
 JV0578* NAD 83(2011) EPOCH   -  2010.00
 JV0578* NAVD 88 ORTHO HEIGHT -     9.268 (meters)       30.41  (feet) ADJUSTED
 JV0578  ______________________________________________________________________
 JV0578  GEOID HEIGHT    -        -32.849 (meters)                     GEOID18
 JV0578  NAD 83(2011) X  -  1,147,537.219 (meters)                     COMP
 JV0578  NAD 83(2011) Y  - -4,809,805.657 (meters)                     COMP
 JV0578  NAD 83(2011) Z  -  4,015,048.346 (meters)                     COMP
 JV0578  LAPLACE CORR    -         -4.51  (seconds)                    DEFLEC18
 JV0578  DYNAMIC HEIGHT  -          9.263 (meters)       30.39  (feet) COMP
 JV0578  MODELED GRAVITY -    980,099.4   (mgal)                       NAVD 88
 JV0578
 JV0578  VERT ORDER      -  FIRST     CLASS I
 JV0578
 JV0578  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0578  Standards:
 JV0578         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0578            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0578  -------------------------------------------------------------------
 JV0578  NETWORK    0.55   1.00           0.24   0.21   0.51     -0.10930311
 JV0578  -------------------------------------------------------------------
 JV0578  Click here for local accuracies and other accuracy information.
 JV0578
 JV0578.The horizontal coordinates were established by GPS observations
 JV0578.and adjusted by the National Geodetic Survey in June 2012.
 JV0578
 JV0578.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0578.been affixed to the stable North American tectonic plate. See 
 JV0578.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0578
 JV0578.The horizontal coordinates are valid at the epoch date displayed above
 JV0578.which is a decimal equivalence of Year/Month/Day.
 JV0578
 JV0578.The orthometric height was determined by differential leveling and
 JV0578.adjusted by the NATIONAL GEODETIC SURVEY
 JV0578.in June 1991.
 JV0578
 JV0578.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0578.GEOID18 height accuracy estimate available here.
 JV0578
 JV0578.This Tidal Bench Mark is designated as VM 437
 JV0578.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0578
 JV0578.This Tidal Bench Mark is designated as VM 17482
 JV0578.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV0578
 JV0578.Click photographs - Photos may exist for this station.
 JV0578
 JV0578.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0578
 JV0578.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0578
 JV0578.The ellipsoidal height was determined by GPS observations
 JV0578.and is referenced to NAD 83.
 JV0578
 JV0578.The dynamic height is computed by dividing the NAVD 88
 JV0578.geopotential number by the normal gravity value computed on the
 JV0578.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0578.degrees latitude (g = 980.6199 gals.).
 JV0578
 JV0578.The modeled gravity was interpolated from observed gravity values.
 JV0578
 JV0578. The following values were computed from the NAD 83(2011) position.
 JV0578
 JV0578;                    North         East     Units Scale Factor Converg.
 JV0578;SPC MD       -   177,411.819   436,154.405   MT  0.99997277   +0 15 46.6
 JV0578;SPC MD       -   582,058.61  1,430,949.91   sFT  0.99997277   +0 15 46.6
 JV0578;UTM  18      - 4,347,279.916   363,599.805   MT  0.99982908   -1 00 02.9
 JV0578
 JV0578!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0578!SPC MD       -   1.00000370  x   0.99997277  =   0.99997647
 JV0578!UTM  18      -   1.00000370  x   0.99982908  =   0.99983278
 JV0578
 JV0578_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6359947279(NAD 83)
 JV0578
 JV0578                          SUPERSEDED SURVEY CONTROL
 JV0578
 JV0578  NAD 83(2007)-  39 15 50.88833(N)    076 34 51.83477(W) AD(2002.00) 0
 JV0578  ELLIP H (02/10/07)  -23.576  (m)                       GP(2002.00)    
 JV0578  NAD 83(1991)-  39 15 50.88836(N)    076 34 51.83487(W) AD(       ) A
 JV0578  ELLIP H (02/12/02)  -23.575  (m)                       GP(       ) 4 1
 JV0578  NAVD 88               9.27   (m)           30.4    (f) LEVELING    3  
 JV0578  NGVD 29 (11/26/84)    9.505  (m)           31.18   (f) ADJUSTED    1 1
 JV0578
 JV0578.Superseded values are not recommended for survey control.
 JV0578
 JV0578.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0578.See file dsdata.pdf to determine how the superseded data were derived.
 JV0578
 JV0578_MARKER: DB = BENCH MARK DISK
 JV0578_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0578_STAMPING: NONE
 JV0578_MARK LOGO: CGS
 JV0578_PROJECTION: PROJECTING 61 CENTIMETERS
 JV0578_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0578_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0578+STABILITY: SURFACE MOTION
 JV0578_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0578+SATELLITE: SATELLITE OBSERVATIONS - June 08, 2017
 JV0578
 JV0578  HISTORY     - Date     Condition        Report By
 JV0578  HISTORY     - UNK      MONUMENTED       CGS
 JV0578  HISTORY     - 1971     GOOD             NGS
 JV0578  HISTORY     - 1976     GOOD             NGS
 JV0578  HISTORY     - 20000223 GOOD             NGS
 JV0578  HISTORY     - 20060522 GOOD             NGS
 JV0578  HISTORY     - 20060725 GOOD             NGS
 JV0578  HISTORY     - 20071221 GOOD             INDIV
 JV0578  HISTORY     - 20091213 GOOD             GEOCAC
 JV0578  HISTORY     - 20121113 GOOD             INDIV
 JV0578  HISTORY     - 20140605 GOOD             USPSQD
 JV0578  HISTORY     - 20170608 GOOD             NGS
 JV0578
 JV0578                          STATION DESCRIPTION
 JV0578
 JV0578'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0578'AT BALTIMORE.
 JV0578'AT BALTIMORE, AT FORT MC HENRY, ABOUT 0.15 MILE SOUTHEAST OF THE
 JV0578'BRICK AND METAL GATE AT THE ENTRANCE TO FORT MC HENRY, 222 FEET
 JV0578'SOUTHWEST OF THE SOUTHWEST CURB OF FORT AVENUE, 292 FEET
 JV0578'SOUTH-SOUTHEAST OF THE EAST EDGE OF THE ROUND GRANITE FOUNDATION
 JV0578'FOR THE FRANCIS SCOTT KEY MONUMENT, 100 FEET SOUTHEAST OF THE
 JV0578'MORE EASTERLY OF TWO TREES, AND SET IN THE TOP OF A 2-FOOT
 JV0578'SQUARE CONCRETE MONUMENT WHICH PROJECTS 2 FEET.  THE MONUMENT
 JV0578'IS INSCRIBED UNITED STATES COAST AND GEODETIC SURVEY BASIC BENCH
 JV0578'MARK.
 JV0578
 JV0578                          STATION RECOVERY (1976)
 JV0578
 JV0578'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
 JV0578'RECOVERED IN GOOD CONDITION.
 JV0578
 JV0578                          STATION RECOVERY (2000)
 JV0578
 JV0578'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 JV0578'THE STATION IS LOCATED IN BALTIMORE AT THE FORT MCHENRY NATIONAL
 JV0578'MONUMENT AND HISTORIC SHRINE ON THE PROPERTY OF THE NATIONAL PARK
 JV0578'SERVICE, THE STATION IS IN THE PARK IN A GRASSY AREA BETWEEN THE
 JV0578'FRANCIS SCOTT KEY MEMORIAL STATUE AND THE VISITORS CENTER BUILDING.
 JV0578'OWNERSHIP--NATIONAL PARK SERVICE.  NOTE--CONTACT CHIEF RANGER HUGH
 JV0578'MANAR AT LEAST FIVE DAYS IN ADVANCE BEFORE OCCUPYING THIS STATION AS
 JV0578'SCHEDULE MUST BE KNOWN AND POSSIBLY A LETTER ABOUT THE PROJECT SENT TO
 JV0578'THE SUPERVISOR OF THE PARK, PHONE (410) 962-4290 EXT.  241.  TO REACH
 JV0578'THE STATION FROM SOUTH BOUND LANE OF INTERSTATE HIGHWAY 95 (EXIT 55
 JV0578'KEY HIGHWAY EXIT) , GO SOUTH ON THE EXIT RAMP FOR 0.48 KM (0.30 MI) TO
 JV0578'THE JUNCTION OF KEY HIGHWAY ON THE RIGHT (AT A TRAFFIC LIGHT) , TURN
 JV0578'RIGHT, NORTHEASTERLY ON KEY HIGHWAY FOR 0.80 KM (0.50 MI) TO THE
 JV0578'JUNCTION OF LAWRENCE STREET, TURN LEFT, SOUTHWEST ON LAWRENCE STREET
 JV0578'FOR 0.16 KM (0.10 MI) TO THE JUNCTION OF FORT STREET, TURN LEFT,
 JV0578'SOUTHEAST ON FORT STREET FOR 1.69 KM (1.05 MI) TO ITS END AT THE
 JV0578'ENTRANCE GATE OF THE NATIONAL PARK, CONTINUE SOUTHEAST PASSING THROUGH
 JV0578'THE ENTRANCE GATE AND ON THE PARK ROAD FOR 0.16 KM (0.10 MI) TO THE
 JV0578'SOUTHEAST ENTRANCE OF THE ASPHALT ENTRANCE WALK TO THE FRANCIS SCOTT
 JV0578'KEY STATUE ON THE RIGHT AND THE STATION IN A GRASSY AREA BETWEEN THE
 JV0578'STATUE AND THE VISITOR CENTER BUILDING ABOUT 60.96 M (200.00 FT)
 JV0578'SOUTHWEST OF THE SIDEWALK, A LARGE CONCRETE MONUMENT PROJECTING 0.61 M
 JV0578'(2.00 FT) ABOVE THE GROUND.  THE STATION IS A CGS BENCH MARK DISK (NOT
 JV0578'STAMPED) SET IN THE TOP OF A 45 CM SQUARE CONCRETE POST PROJECTING
 JV0578'ABOUT 0.61 M (2.00 FT) ABOVE THE GROUND. LOCATED 89.0 M (292.0 FT)
 JV0578'SOUTH-SOUTHEAST OF THE EAST FACE OF THE GRANITE BASE OF THE FRANCIS
 JV0578'SCOTT KEY MEMORIAL STATUE, 64.62 M (212.01 FT) SOUTHEAST OF THE
 JV0578'SOUTHWEST CURB OF FORT AVENUE, 78.64 M (258.00 FT) WEST-NORTHWEST OF
 JV0578'THE WEST CORNER OF THE VISITOR CENTER BUILDING, 67.97 M (223.00 FT)
 JV0578'WEST-NORTHWEST OF A FIRE HYDRANT ON THE WEST SIDE OF THE VISITOR
 JV0578'CENTER BUILDING, 62.48 M (204.99 FT) SOUTH-SOUTHWEST OF A SMALL WATER
 JV0578'METER COVER BETWEEN THE ASPHALT ENTRANCE WALK TO THE STATUE AND THE
 JV0578'SIDEWALK, AND 30.48 M (100.00 FT) SOUTHEAST OF THE EASTERLY OF TWO
 JV0578'TREES.
 JV0578
 JV0578                          STATION RECOVERY (2006)
 JV0578
 JV0578'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DW)
 JV0578'RECOVERED IN GOOD CONDITION.
 JV0578
 JV0578                          STATION RECOVERY (2006)
 JV0578
 JV0578'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV0578'RECOVERED AS DESCRIBED.
 JV0578
 JV0578                          STATION RECOVERY (2007)
 JV0578
 JV0578'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007
 JV0578'RECOVERED IN GOOD CONDITION.
 JV0578
 JV0578                          STATION RECOVERY (2009)
 JV0578
 JV0578'RECOVERY NOTE BY GEOCACHING 2009 (KHW)
 JV0578'RECOVERED IN GOOD CONDITION.
 JV0578
 JV0578                          STATION RECOVERY (2012)
 JV0578
 JV0578'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2012 (JFS)
 JV0578'RECOVERED AS DESCRIBED
 JV0578
 JV0578                          STATION RECOVERY (2014)
 JV0578
 JV0578'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV0578'RECOVERED IN GOOD CONDITION.
 JV0578
 JV0578                          STATION RECOVERY (2017)
 JV0578
 JV0578'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (LHB)
 JV0578'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3802 ***********************************************************************
 DI3802  DESIGNATION -  857 4683 A TIDAL
 DI3802  PID         -  DI3802
 DI3802  STATE/COUNTY-  MD/C OF BALTIMORE
 DI3802  COUNTRY     -  US
 DI3802  USGS QUAD   -  BALTIMORE EAST (2016)
 DI3802
 DI3802                         *CURRENT SURVEY CONTROL
 DI3802  ______________________________________________________________________
 DI3802* NAD 83(1986) POSITION- 39 15 50.34   (N) 076 34 59.16   (W)   HD_HELD1
 DI3802* NAVD 88 ORTHO HEIGHT -     7.179 (meters)       23.55  (feet) ADJUSTED
 DI3802  ______________________________________________________________________
 DI3802  GEOID HEIGHT    -        -32.844 (meters)                     GEOID18
 DI3802  DYNAMIC HEIGHT  -          7.175 (meters)       23.54  (feet) COMP
 DI3802  MODELED GRAVITY -    980,099.4   (mgal)                       NAVD 88
 DI3802
 DI3802  VERT ORDER      -  SECOND    CLASS I
 DI3802
 DI3802.The horizontal coordinates were determined by differentially corrected
 DI3802.hand held GPS observations or other comparable positioning techniques
 DI3802.and have an estimated accuracy of +/- 3 meters.
 DI3802
 DI3802.The orthometric height was determined by differential leveling and
 DI3802.adjusted by the NATIONAL GEODETIC SURVEY
 DI3802.in June 2008.
 DI3802
 DI3802.No vertical observational check was made to the station.
 DI3802
 DI3802.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3802.GEOID18 height accuracy estimate available here.
 DI3802
 DI3802.Click photographs - Photos may exist for this station.
 DI3802
 DI3802.The dynamic height is computed by dividing the NAVD 88
 DI3802.geopotential number by the normal gravity value computed on the
 DI3802.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DI3802.degrees latitude (g = 980.6199 gals.).
 DI3802
 DI3802.The modeled gravity was interpolated from observed gravity values.
 DI3802
 DI3802;                    North         East    Units  Estimated Accuracy
 DI3802;SPC MD       -   177,394.1     435,978.9     MT  (+/- 3 meters HH1 GPS) 
 DI3802
 DI3802_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6342347266(NAD 83)
 DI3802
 DI3802                          SUPERSEDED SURVEY CONTROL
 DI3802
 DI3802.No superseded survey control is available for this station.
 DI3802
 DI3802_MARKER: F = FLANGE-ENCASED ROD
 DI3802_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DI3802_STAMPING: 4683 A 2003
 DI3802_MARK LOGO: NOS
 DI3802_PROJECTION: RECESSED 1 CENTIMETERS
 DI3802_MAGNETIC: N = NO MAGNETIC MATERIAL
 DI3802_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DI3802_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DI3802+SATELLITE: SATELLITE OBSERVATIONS - June 25, 2014
 DI3802_ROD/PIPE-DEPTH: 9.1 meters
 DI3802
 DI3802  HISTORY     - Date     Condition        Report By
 DI3802  HISTORY     - 2003     MONUMENTED       NOS
 DI3802  HISTORY     - 20060816 GOOD             NGS
 DI3802  HISTORY     - 20140625 GOOD             BASE9
 DI3802
 DI3802                          STATION DESCRIPTION
 DI3802
 DI3802'DESCRIBED BY NATIONAL GEODETIC SURVEY 2006 (RJO)
 DI3802'THE MARK IS LOCATED IN SOUTH BALTIMORE AT THE FORT MCHENRY NATIONAL
 DI3802'MONUMENT AND HISTORIC SHRINE ON THE PROPERTY OF THE NATIONAL PARK
 DI3802'SERVICE.
 DI3802'
 DI3802'IT IS ABOUT 22.86 M (75.0 FT) SOUTH FROM THE SOUTHWEST CORNER OF THE
 DI3802'PERIMETER WALL SURROUNDING THE CIVIL WAR MAGAZINE (A LARGE BRICK
 DI3802'BUILDING).
 DI3802'
 DI3802'20.73 M (68.0 FT) NORTH FROM AND 5.8 M (20.0 FT) ABOVE STATION NAIB-1
 DI3802'SET ON TOP OF THE STONE SEAWALL, 9.2 M (30.2 FT) NORTHWEST FROM A 12
 DI3802'INCH (30 CM) PINE TREE, 5.03 M (16.5 FT) SOUTHEAST FROM A 4 INCH (10
 DI3802'CM) SYCAMORE TREE, 3.81 M (12.5 FT) SOUTH FROM THE CENTERLINE OF THE
 DI3802'ASPHALT PATH, AND 0.15 M (0.5 FT) SOUTHERLY FROM THE CENTER OF THE
 DI3802'SOUTH EDGE OF AN 8 FT (2.4 M) BY 12 FT (3.7 M) BRICK PATIO FOR THREE
 DI3802'INFORMATION SIGNS.
 DI3802'
 DI3802'THE DATUM POINT IS SET 1 CM (0 INCHES) BELOW THE GROUND, BEING THE TOP
 DI3802'OF A 5/8 INCH (13 CM) STAINLESS STEEL ROD DRIVEN 9.1 M (30.0 FT) TO
 DI3802'REFUSAL, AND ENCASED IN A 5 INCH (13 CM) NOS LOGO CAP.
 DI3802
 DI3802                          STATION RECOVERY (2014)
 DI3802
 DI3802'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 DI3802'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4035 ***********************************************************************
 AE4035  TIDAL BM    -  This is a Tidal Bench Mark.
 AE4035  DESIGNATION -  857 4857 TIDAL 1
 AE4035  PID         -  AE4035
 AE4035  STATE/COUNTY-  MD/BALTIMORE
 AE4035  COUNTRY     -  US
 AE4035  USGS QUAD   -  SPARROWS POINT (2016)
 AE4035
 AE4035                         *CURRENT SURVEY CONTROL
 AE4035  ______________________________________________________________________
 AE4035* NAD 83(1986) POSITION- 39 11 48.1    (N) 076 26 47.1    (W)   HD_HELD2
 AE4035* NAVD 88 ORTHO HEIGHT -     1.736 (meters)        5.70  (feet) ADJUSTED
 AE4035  ______________________________________________________________________
 AE4035  GEOID HEIGHT    -        -33.058 (meters)                     GEOID18
 AE4035  DYNAMIC HEIGHT  -          1.735 (meters)        5.69  (feet) COMP
 AE4035  MODELED GRAVITY -    980,105.6   (mgal)                       NAVD 88
 AE4035
 AE4035  VERT ORDER      -  THIRD
 AE4035
 AE4035.The horizontal coordinates were established by autonomous hand held GPS
 AE4035.observations and have an estimated accuracy of +/- 10 meters.
 AE4035
 AE4035.The orthometric height was determined by differential leveling and
 AE4035.adjusted by the NATIONAL GEODETIC SURVEY
 AE4035.in February 1998.
 AE4035
 AE4035.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4035.GEOID18 height accuracy estimate available here.
 AE4035
 AE4035.This Tidal Bench Mark is designated as VM 3188
 AE4035.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AE4035
 AE4035.Click photographs - Photos may exist for this station.
 AE4035
 AE4035.The dynamic height is computed by dividing the NAVD 88
 AE4035.geopotential number by the normal gravity value computed on the
 AE4035.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4035.degrees latitude (g = 980.6199 gals.).
 AE4035
 AE4035.The modeled gravity was interpolated from observed gravity values.
 AE4035
 AE4035;                    North         East    Units  Estimated Accuracy
 AE4035;SPC MD       -   169,987.      447,820.      MT  (+/- 10 meters HH2 GPS)
 AE4035
 AE4035_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7509739600(NAD 83)
 AE4035
 AE4035                          SUPERSEDED SURVEY CONTROL
 AE4035
 AE4035.No superseded survey control is available for this station.
 AE4035
 AE4035_MARKER: DB = BENCH MARK DISK
 AE4035_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 AE4035_SP_SET: RETAINING WALL
 AE4035_STAMPING: NO. 1 1959
 AE4035_MARK LOGO: CGS
 AE4035_MAGNETIC: N = NO MAGNETIC MATERIAL
 AE4035_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4035+STABILITY: SURFACE MOTION
 AE4035_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4035+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2012
 AE4035
 AE4035  HISTORY     - Date     Condition        Report By
 AE4035  HISTORY     - 1959     MONUMENTED       CGS
 AE4035  HISTORY     - 19950223 GOOD             MCCRON
 AE4035  HISTORY     - 20051220 GOOD             GEOCAC
 AE4035  HISTORY     - 20090629 GOOD             MD-005
 AE4035  HISTORY     - 20121204 GOOD             USPSQD
 AE4035
 AE4035                          STATION DESCRIPTION
 AE4035
 AE4035'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4035'STATION IS LOCATED ON THE FORT HOWARD VA HOSPITAL GROUNDS. TO REACH
 AE4035'STATION FROM I-695 (BELTWAY) TAKE EXIT 42 AND FOLLOW RAMP TO NORTH
 AE4035'POINT ROAD (RT 20) TOWARD FORT HOWARD.  AT STOP SIGN TURN RIGHT ON
 AE4035'NORTH POINT ROAD AND GO 3.65 MI (5.87 KM) TO THE ENTRANCE TO FORT
 AE4035'HOWARD VA HOSPITAL AND FORT HOWARD PARK.  AT ENTRANCE PROCEED SOUTH ON
 AE4035'GETTYSBURG AVENUE FOR 0.45 MI (0.72 KM) TO KEY STREET AND STATION ON
 AE4035'THE RIGHT AT THE END OF A MACADAM DRIVE ENDING AT WATERS EDGE. STATION
 AE4035'MARK IS SET IN TOP OF A CONCRETE RETAINING WALL.  IT IS 8.75 FT (2.67
 AE4035'M) NORTHWEST OF THE CENTERLINE OF THE GATE, 19.6 FT (6.0 M) EAST OF
 AE4035'COUNTY BM 5102.  NOTE STATION MARK IS AT THE CORNER OF THE RETAINING
 AE4035'WALL.
 AE4035
 AE4035                          STATION RECOVERY (2005)
 AE4035
 AE4035'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 AE4035'RECOVERED IN GOOD CONDITION.
 AE4035
 AE4035                          STATION RECOVERY (2009)
 AE4035
 AE4035'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE4035'RECOVERED IN GOOD CONDITION.
 AE4035
 AE4035                          STATION RECOVERY (2012)
 AE4035
 AE4035'RECOVERY NOTE BY US POWER SQUADRON 2012
 AE4035'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4033 ***********************************************************************
 AE4033  TIDAL BM    -  This is a Tidal Bench Mark.
 AE4033  DESIGNATION -  857 4857 TIDAL 2
 AE4033  PID         -  AE4033
 AE4033  STATE/COUNTY-  MD/BALTIMORE
 AE4033  COUNTRY     -  US
 AE4033  USGS QUAD   -  SPARROWS POINT (2016)
 AE4033
 AE4033                         *CURRENT SURVEY CONTROL
 AE4033  ______________________________________________________________________
 AE4033* NAD 83(1986) POSITION- 39 11 51.68   (N) 076 26 48.39   (W)   HD_HELD1
 AE4033* NAVD 88 ORTHO HEIGHT -     0.978 (meters)        3.21  (feet) ADJUSTED
 AE4033  ______________________________________________________________________
 AE4033  GEOID HEIGHT    -        -33.057 (meters)                     GEOID18
 AE4033  DYNAMIC HEIGHT  -          0.977 (meters)        3.21  (feet) COMP
 AE4033  MODELED GRAVITY -    980,105.7   (mgal)                       NAVD 88
 AE4033
 AE4033  VERT ORDER      -  THIRD
 AE4033
 AE4033.The horizontal coordinates were determined by differentially corrected
 AE4033.hand held GPS observations or other comparable positioning techniques
 AE4033.and have an estimated accuracy of +/- 3 meters.
 AE4033
 AE4033.The orthometric height was determined by differential leveling and
 AE4033.adjusted by the NATIONAL GEODETIC SURVEY
 AE4033.in February 1998.
 AE4033
 AE4033.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4033.GEOID18 height accuracy estimate available here.
 AE4033
 AE4033.This Tidal Bench Mark is designated as VM 3189
 AE4033.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AE4033
 AE4033.Click photographs - Photos may exist for this station.
 AE4033
 AE4033.The dynamic height is computed by dividing the NAVD 88
 AE4033.geopotential number by the normal gravity value computed on the
 AE4033.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4033.degrees latitude (g = 980.6199 gals.).
 AE4033
 AE4033.The modeled gravity was interpolated from observed gravity values.
 AE4033
 AE4033;                    North         East    Units  Estimated Accuracy
 AE4033;SPC MD       -   170,097.0     447,788.3     MT  (+/- 3 meters HH1 GPS) 
 AE4033
 AE4033_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7506739711(NAD 83)
 AE4033
 AE4033                          SUPERSEDED SURVEY CONTROL
 AE4033
 AE4033.No superseded survey control is available for this station.
 AE4033
 AE4033_MARKER: DB = BENCH MARK DISK
 AE4033_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 AE4033_SP_SET: HEADWALL
 AE4033_STAMPING: NO. 2 1959
 AE4033_MARK LOGO: CGS
 AE4033_MAGNETIC: N = NO MAGNETIC MATERIAL
 AE4033_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4033+STABILITY: SURFACE MOTION
 AE4033_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4033+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2012
 AE4033
 AE4033  HISTORY     - Date     Condition        Report By
 AE4033  HISTORY     - 1959     MONUMENTED       CGS
 AE4033  HISTORY     - 19950223 GOOD             MCCRON
 AE4033  HISTORY     - 20051220 GOOD             GEOCAC
 AE4033  HISTORY     - 20090629 GOOD             MD-005
 AE4033  HISTORY     - 20121204 GOOD             USPSQD
 AE4033
 AE4033                          STATION DESCRIPTION
 AE4033
 AE4033'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4033'STATION IS LOCATED ON THE GROUNDS OF THE FORT HOWARD VA HOSPITAL. TO
 AE4033'REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 42 AND FOLLOW RAMP TO
 AE4033'NORTH POINT ROAD (RT 20) TOWARD FORT HOWARD.  AT STOP SIGN TURN RIGHT
 AE4033'ON NORTH POINT ROAD AND G0 3.65 MI (5.87 KM) TO THE ENTRANCE TO FORT
 AE4033'HOWARD VA HOSPITAL AND FORT HOWARD PARK.  AT ENTRANCE PROCEED SOUTH ON
 AE4033'GETTYSBURG AVENUE FOR 0.4 MI (0.6 KM) TO STATION ON THE RIGHT, SET IN
 AE4033'TOP OF CONCRETE RETAINING WALL,  59.8 FT (18.2 M) SOUTH OF A LIGHT
 AE4033'POLE, 6.0 FT (1.8 M) EAST OF THE CENTERLINE OF A CONCRETE WALK, 11.4
 AE4033'FT (3.5 M) WEST OF THE CENTERLINE OF GETTYSBURG AVENUE.
 AE4033
 AE4033                          STATION RECOVERY (2005)
 AE4033
 AE4033'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 AE4033'RECOVERED IN GOOD CONDITION.
 AE4033
 AE4033                          STATION RECOVERY (2009)
 AE4033
 AE4033'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE4033'RECOVERED IN GOOD CONDITION.
 AE4033
 AE4033                          STATION RECOVERY (2012)
 AE4033
 AE4033'RECOVERY NOTE BY US POWER SQUADRON 2012
 AE4033'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8839 ***********************************************************************
 HV8839  TIDAL BM    -  This is a Tidal Bench Mark.
 HV8839  DESIGNATION -  857 5510 D TIDAL
 HV8839  PID         -  HV8839
 HV8839  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV8839  COUNTRY     -  US
 HV8839  USGS QUAD   -  ANNAPOLIS (2016)
 HV8839
 HV8839                         *CURRENT SURVEY CONTROL
 HV8839  ______________________________________________________________________
 HV8839* NAD 83(2011) POSITION- 38 58 59.71219(N) 076 28 44.76384(W)   ADJUSTED
 HV8839* NAD 83(2011) ELLIP HT-   -31.913 (meters)        (06/27/12)   ADJUSTED
 HV8839* NAD 83(2011) EPOCH   -  2010.00
 HV8839* NAVD 88 ORTHO HEIGHT -     1.44  (+/-2cm)        4.7   (feet) VERTCON3
 HV8839  ______________________________________________________________________
 HV8839  GEOID HEIGHT    -        -33.358 (meters)                     GEOID18
 HV8839  NAD 83(2011) X  -  1,160,693.752 (meters)                     COMP
 HV8839  NAD 83(2011) Y  - -4,826,880.496 (meters)                     COMP
 HV8839  NAD 83(2011) Z  -  3,990,851.959 (meters)                     COMP
 HV8839  LAPLACE CORR    -         -3.56  (seconds)                    DEFLEC18
 HV8839  VERT ORDER      -  THIRD ? (See Below)
 HV8839
 HV8839  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8839  Standards:
 HV8839         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8839            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8839  -------------------------------------------------------------------
 HV8839  NETWORK    1.08   1.39           0.50   0.36   0.71      0.06825779
 HV8839  -------------------------------------------------------------------
 HV8839  Click here for local accuracies and other accuracy information.
 HV8839
 HV8839.The horizontal coordinates were established by GPS observations
 HV8839.and adjusted by the National Geodetic Survey in June 2012.
 HV8839
 HV8839.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8839.been affixed to the stable North American tectonic plate. See 
 HV8839.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8839
 HV8839.The horizontal coordinates are valid at the epoch date displayed above
 HV8839.which is a decimal equivalence of Year/Month/Day.
 HV8839
 HV8839.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8839.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8839
 HV8839.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8839.GEOID18 height accuracy estimate available here.
 HV8839
 HV8839.The vertical order pertains to the NGVD 29 superseded value.
 HV8839
 HV8839.This Tidal Bench Mark is designated as VM 446
 HV8839.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV8839
 HV8839.Click photographs - Photos may exist for this station.
 HV8839
 HV8839.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8839
 HV8839.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8839
 HV8839.The ellipsoidal height was determined by GPS observations
 HV8839.and is referenced to NAD 83.
 HV8839
 HV8839. The following values were computed from the NAD 83(2011) position.
 HV8839
 HV8839;                    North         East     Units Scale Factor Converg.
 HV8839;SPC MD       -   146,275.930   445,131.807   MT  0.99995160   +0 19 37.0
 HV8839;SPC MD       -   479,906.95  1,460,403.27   sFT  0.99995160   +0 19 37.0
 HV8839;UTM  18      - 4,315,958.597   371,888.859   MT  0.99980210   -0 55 50.2
 HV8839
 HV8839!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8839!SPC MD       -   1.00000501  x   0.99995160  =   0.99995661
 HV8839!UTM  18      -   1.00000501  x   0.99980210  =   0.99980711
 HV8839
 HV8839_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7188815958(NAD 83)
 HV8839
 HV8839                          SUPERSEDED SURVEY CONTROL
 HV8839
 HV8839  NAD 83(2007)-  38 58 59.71244(N)    076 28 44.76465(W) AD(2002.00) 0
 HV8839  ELLIP H (02/10/07)  -31.891  (m)                       GP(2002.00)    
 HV8839  ELLIP H (08/30/02)  -31.873  (m)                       GP(       ) 4 2
 HV8839  NAD 83(1991)-  38 58 59.71230(N)    076 28 44.76445(W) AD(       ) 1
 HV8839  ELLIP H (12/03/93)  -31.932  (m)                       GP(       ) 4 1
 HV8839  NAD 83(1991)-  38 58 59.71866(N)    076 28 44.77105(W) AD(       ) 1
 HV8839  ELLIP H (01/27/92)  -31.966  (m)                       GP(       ) 4 1
 HV8839  NAD 83(1986)-  38 58 59.71465(N)    076 28 44.79326(W) AD(       ) 1
 HV8839  NAD 27      -  38 58 59.31347(N)    076 28 45.93628(W) AD(       ) 1
 HV8839  NGVD 29               1.69   (m)            5.5    (f) LEVELING    3  
 HV8839  NGVD 29 (11/20/87)    0.9    (m)  RAPOU78  model used  GPS OBS        
 HV8839
 HV8839.Superseded values are not recommended for survey control.
 HV8839
 HV8839.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8839.See file dsdata.pdf to determine how the superseded data were derived.
 HV8839
 HV8839_MARKER: DJ = TIDAL STATION DISK
 HV8839_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV8839_SP_SET: RETAINING WALL
 HV8839_STAMPING: 5510 D 1979
 HV8839_MARK LOGO: NOS
 HV8839_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8839_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8839+STABILITY: SURFACE MOTION
 HV8839_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8839+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2005
 HV8839
 HV8839  HISTORY     - Date     Condition        Report By
 HV8839  HISTORY     - 1979     MONUMENTED       NOS
 HV8839  HISTORY     - 1986     GOOD             NGS
 HV8839  HISTORY     - 1986     GOOD             USPSQD
 HV8839  HISTORY     - 19930511 GOOD             NOS
 HV8839  HISTORY     - 20010331 GOOD             NGS
 HV8839  HISTORY     - 20031001 GOOD             USPSQD
 HV8839  HISTORY     - 20050720 GOOD             USPSQD
 HV8839
 HV8839                          STATION DESCRIPTION
 HV8839
 HV8839'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (MRM)
 HV8839'THE STATION IS LOCATED AT THE U.S. NAVAL ACADEMY AT ANNAPOLIS, NEAR
 HV8839'THE OCEANOGRAPHIC FIELD LABORATORY.
 HV8839'OWNERSHIP--U.S. GOVERNMENT, DEPARTMENT OF THE NAVY.
 HV8839'
 HV8839'TO REACH THE STATION FROM THE MAIN GATE OF THE U.S. NAVAL ACADEMY,
 HV8839'GO SOUTH, EAST AND THEN NORTH FOR 1.3 KM (0.8 MI) ON A PAVED ROAD TO
 HV8839'A SIDE ROAD RIGHT.  TURN RIGHT AND GO NORTH FOR 0.2 KM (0.15 MI) ON
 HV8839'THE ROAD TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO 0.1 KM (0.05 MI)
 HV8839'ON SIMS ROAD TO THE EDGE OF THE SANTEE BASIN, THEN RIGHT TO A FRAME
 HV8839'BUILDING ON THE PIER.  KEEP LEFT FOR ABOUT 61 METERS (200 FT) TO
 HV8839'THE STATION AT THE END OF THE PIER.
 HV8839'
 HV8839'THE STATION IS A STANDARD NOS DISK
 HV8839'STAMPED---5510 D 1979---,
 HV8839'SET INTO A DRILL HOLE IN THE TOP OF THE PIER CAP AT THE SOUTHEAST
 HV8839'CORNER OF THE PIER.  LOCATED 10.91 METERS (35.8 FT) EAST FROM THE
 HV8839'SOUTHEAST CORNER OF A WOODEN PUMPHOUSE, 9.75 METERS (32.0 FT)
 HV8839'SOUTHEAST FROM THE SOUTHEAST CORNER OF THE OCEANOGRAPHIC FIELD
 HV8839'LABORATORY AND 3.96 METERS (13.0 FT)
 HV8839'SOUTHEAST FROM THE NORTHERLY SET OF BALLARDS.
 HV8839'
 HV8839'FAA AIRPORT SURVEYS, MARYLAND, JANUARY-FEBRUARY 1986.
 HV8839'
 HV8839'THIS STATION SUITABLE FOR GPS SURVEYS.
 HV8839'
 HV8839'DESCRIBED BY R.T. WOODRUFF.
 HV8839
 HV8839                          STATION RECOVERY (1986)
 HV8839
 HV8839'RECOVERY NOTE BY US POWER SQUADRON 1986 (JEF)
 HV8839'RECOVERED IN GOOD CONDITION.
 HV8839
 HV8839                          STATION RECOVERY (1993)
 HV8839
 HV8839'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1993
 HV8839'STATION IS LOCATED AT THE U.S. NAVAL ACADEMY AT ANNAPOLIS, NEAR THE
 HV8839'OCEANOGRAPHIC FIELD LABORATORY OWNERSHIP --U.S. GOVERNMENT,
 HV8839'DEPARTMENT OF THE NAVY.
 HV8839'TO REACH THE STATION FROM THE MAIN GATE OF THE U.S. NAVAL ACADEMY, GO
 HV8839'SOUTH, EAST AND THEN NORTH FOR 1.3 KM (0.80 MI) ON A PAVED ROAD TO A
 HV8839'SIDE ROAD RIGHT.  TURN RIGHT AND GO NORTH FOR 0.2 KM (0.10 MI) ON THE
 HV8839'ROAD TO A SIDE ROAD RIGHT. TURN RIGHT AND GO 0.1 KM (0.05 MI) ON SIMS
 HV8839'ROAD TO THE EDGE OF THE SANTEE BASIN, THEN RIGHT TO A FRAME BUILDING
 HV8839'ON THE PIER.  KEEP LEFT FOR ABOUT 61 M (200.1 FT) TO THE STATION AT
 HV8839'THE END OF THE PIER.
 HV8839'THE STATION IS A STANDARD NOS DISK STAMPED ---5510 D 1979---, SET INTO
 HV8839'A DRILL HOLE IN THE TOP OF THE PIER CAP AT THE SE CORNER OF THE PIER.
 HV8839'IT IS LOCATED 10.91 M (35.79 FT) EAST FROM THE SE CORNER OF A WOODEN
 HV8839'PUMPHOUSE, 9.75 M (31.99 FT) SE FROM THE SE CORNER OF THE
 HV8839'OCEANOGRAPHIC FIELD LABORATORY AND 3.96 M (12.99 FT) SE FROM THE
 HV8839'NORTHERLY SET OF BALLARDS.
 HV8839
 HV8839                          STATION RECOVERY (2001)
 HV8839
 HV8839'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV8839'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV8839
 HV8839                          STATION RECOVERY (2003)
 HV8839
 HV8839'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV8839'RECOVERED IN GOOD CONDITION.
 HV8839
 HV8839                          STATION RECOVERY (2005)
 HV8839
 HV8839'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV8839'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0208 ***********************************************************************
 HV0208  TIDAL BM    -  This is a Tidal Bench Mark.
 HV0208  DESIGNATION -  857 5512 TIDAL 1
 HV0208  PID         -  HV0208
 HV0208  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0208  COUNTRY     -  US
 HV0208  USGS QUAD   -  ANNAPOLIS (2016)
 HV0208
 HV0208                         *CURRENT SURVEY CONTROL
 HV0208  ______________________________________________________________________
 HV0208* NAD 83(1986) POSITION- 38 58 58.4    (N) 076 28 50.7    (W)   HD_HELD2
 HV0208* NAVD 88 ORTHO HEIGHT -     1.347 (meters)        4.42  (feet) ADJUSTED
 HV0208  ______________________________________________________________________
 HV0208  GEOID HEIGHT    -        -33.356 (meters)                     GEOID18
 HV0208  DYNAMIC HEIGHT  -          1.347 (meters)        4.42  (feet) COMP
 HV0208  MODELED GRAVITY -    980,075.4   (mgal)                       NAVD 88
 HV0208
 HV0208  VERT ORDER      -  FIRST     CLASS I
 HV0208
 HV0208.The horizontal coordinates were established by autonomous hand held GPS
 HV0208.observations and have an estimated accuracy of +/- 10 meters.
 HV0208
 HV0208.The orthometric height was determined by differential leveling and
 HV0208.adjusted by the NATIONAL GEODETIC SURVEY
 HV0208.in June 1991.
 HV0208
 HV0208.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0208.GEOID18 height accuracy estimate available here.
 HV0208
 HV0208.This Tidal Bench Mark is designated as VM 440
 HV0208.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0208
 HV0208.Click photographs - Photos may exist for this station.
 HV0208
 HV0208.The dynamic height is computed by dividing the NAVD 88
 HV0208.geopotential number by the normal gravity value computed on the
 HV0208.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0208.degrees latitude (g = 980.6199 gals.).
 HV0208
 HV0208.The modeled gravity was interpolated from observed gravity values.
 HV0208
 HV0208;                    North         East    Units  Estimated Accuracy
 HV0208;SPC MD       -   146,235.      444,989.      MT  (+/- 10 meters HH2 GPS)
 HV0208
 HV0208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7174515920(NAD 83)
 HV0208
 HV0208                          SUPERSEDED SURVEY CONTROL
 HV0208
 HV0208  NGVD 29 (11/26/84)    1.592  (m)            5.22   (f) ADJUSTED    1 1
 HV0208
 HV0208.Superseded values are not recommended for survey control.
 HV0208
 HV0208.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0208.See file dsdata.pdf to determine how the superseded data were derived.
 HV0208
 HV0208_MARKER: DB = BENCH MARK DISK
 HV0208_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0208_STAMPING: 1 1928
 HV0208_MARK LOGO: CGS
 HV0208_PROJECTION: RECESSED 10 CENTIMETERS
 HV0208_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV0208_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0208+STABILITY: SURFACE MOTION
 HV0208_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0208+SATELLITE: SATELLITE OBSERVATIONS - March 02, 2020
 HV0208
 HV0208  HISTORY     - Date     Condition        Report By
 HV0208  HISTORY     - 1928     MONUMENTED       CGS
 HV0208  HISTORY     - 1971     GOOD             NGS
 HV0208  HISTORY     - 19950504 GOOD             NOS
 HV0208  HISTORY     - 20170517 GOOD             USPSQD
 HV0208  HISTORY     - 2020     GOOD             NGS
 HV0208  HISTORY     - 20200302 GOOD             NGS
 HV0208
 HV0208                          STATION DESCRIPTION
 HV0208
 HV0208'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0208'AT ANNAPOLIS.
 HV0208'AT ANNAPOLIS, AT THE U.S. NAVAL ACADEMY, AT THE JUNCTION OF SANTEE
 HV0208'ROAD AND COOPER ROAD, 134.9 FEET NORTHWEST OF THE EAST CORNER
 HV0208'OF LUCE HALL, 53 FEET SOUTHEAST OF THE EXTENDED CENTER LINE OF
 HV0208'SANTEE DOCK, 28 FEET SOUTHWEST OF THE SOUTHWEST CURB OF SANTEE
 HV0208'ROAD, 26 FEET SOUTH-SOUTHWEST OF A FIRE HYDRANT, 4.3 FEET
 HV0208'NORTHEAST OF THE NORTHEAST SIDE OF LUCE HALL, 6.0 FEET SOUTHWEST
 HV0208'OF THE SOUTHWEST EDGE OF A SIDEWALK, ABOUT LEVEL WITH THE
 HV0208'SIDEWALK, AND SET IN THE TOP OF A CONCRETE POST WHICH IS LEVEL
 HV0208'WITH THE SURFACE OF THE GROUND.
 HV0208
 HV0208                          STATION RECOVERY (1995)
 HV0208
 HV0208'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1995 (BLS)
 HV0208'THE BENCH MARK IS SET IN A CONCRETE MONUMENT NEAR THE NE FACE OF LUCE
 HV0208'HALL LOCATED ALONG SANTEE ROAD IN THE US NAVAL ACADEMY, 41.1 M (134.8
 HV0208'FT) NW OF THE EAST CORNER OF LUCE HALL, 11.5 M (37.7 FT) NW OF THE
 HV0208'CIVIL WAR HISTORICAL SIGN, 9 M (29.5 FT) SE OF THE CENTERLINE OF LUCE
 HV0208'HALL, 8.1 M (26.6 FT) SSW OF A FIRE HYDRANT, 1.8 M (5.9 FT) SW OF THE
 HV0208'SW EDGE OF THE SIDEWALK, 1.3 M (4.3 FT) NE OF THE NE SIDE OF LUCE
 HV0208'HALL, AND 0.1 M (0.3 FT) BELOW GRADE.
 HV0208
 HV0208                          STATION RECOVERY (2017)
 HV0208
 HV0208'RECOVERY NOTE BY US POWER SQUADRON 2017 (CAC)
 HV0208'RECOVERED IN GOOD CONDITION.
 HV0208
 HV0208                          STATION RECOVERY (2020)
 HV0208
 HV0208'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (RWA)
 HV0208'RECOVERED IN GOOD CONDITION.
 HV0208
 HV0208                          STATION RECOVERY (2020)
 HV0208
 HV0208'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (RWA)
 HV0208'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV3970 ***********************************************************************
 HV3970  DESIGNATION -  857 5512 TIDAL 4
 HV3970  PID         -  HV3970
 HV3970  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV3970  COUNTRY     -  US
 HV3970  USGS QUAD   -  ANNAPOLIS (2016)
 HV3970
 HV3970                         *CURRENT SURVEY CONTROL
 HV3970  ______________________________________________________________________
 HV3970* NAD 83(1986) POSITION- 38 58 59.     (N) 076 29 13.     (W)   SCALED
 HV3970* NAVD 88 ORTHO HEIGHT -     4.67  (+/-2cm)       15.3   (feet) VERTCON3
 HV3970  ______________________________________________________________________
 HV3970  GEOID HEIGHT    -        -33.344 (meters)                     GEOID18
 HV3970  VERT ORDER      -  FIRST     CLASS II (See Below)
 HV3970
 HV3970.The horizontal coordinates were scaled from a map and have
 HV3970.an estimated accuracy of +/- 6 seconds.
 HV3970
 HV3970.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV3970.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV3970
 HV3970.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV3970.GEOID18 height accuracy estimate available here.
 HV3970
 HV3970.The vertical order pertains to the NGVD 29 superseded value.
 HV3970
 HV3970.Click photographs - Photos may exist for this station.
 HV3970
 HV3970;                    North         East    Units  Estimated Accuracy
 HV3970;SPC MD       -   146,250.      444,450.      MT  (+/- 180 meters Scaled)
 HV3970
 HV3970_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ712159(NAD 83)
 HV3970
 HV3970                          SUPERSEDED SURVEY CONTROL
 HV3970
 HV3970  NGVD 29 (11/26/84)    4.920  (m)           16.14   (f) ADJUSTED    1 2
 HV3970
 HV3970.Superseded values are not recommended for survey control.
 HV3970
 HV3970.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV3970.See file dsdata.pdf to determine how the superseded data were derived.
 HV3970
 HV3970_MARKER: DB = BENCH MARK DISK
 HV3970_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV3970_STAMPING: 4 1928
 HV3970_MARK LOGO: CGS
 HV3970_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV3970_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV3970+STABILITY: SURFACE MOTION
 HV3970
 HV3970  HISTORY     - Date     Condition        Report By
 HV3970  HISTORY     - 1928     MONUMENTED       CGS
 HV3970  HISTORY     - 19380302 MARK NOT FOUND   USN
 HV3970
 HV3970                          STATION DESCRIPTION
 HV3970
 HV3970'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (LAC)
 HV3970'AT ANNAPOLIS, BENCH MARK IS SET IN A CONCRETE FOUNDATION ONE FOOT
 HV3970'SQUARE AT THE TOP, LOCATED IN THE GROUNDS ADJOINING THE SOUTHWEST SIDE
 HV3970'OF SAMPSON HALL. THE BENCH MARK IS ABOUT 100 FEET (30.5 M) NORTHWEST
 HV3970'FROM MARYLAND AVENUE AND 52 FEET (15.8 M) NORTHEAST FROM WALK.
 HV3970
 HV3970                          STATION RECOVERY (1938)
 HV3970
 HV3970'RECOVERY NOTE BY US NAVY 1938
 HV3970'NOTE--THIS MARK WAS REPLACED BETWEEN 1933 AND 1938.  SEE BENCH MARK
 HV3970'857 5512 TIDAL 4 A.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0204 ***********************************************************************
 HV0204  TIDAL BM    -  This is a Tidal Bench Mark.
 HV0204  DESIGNATION -  857 5512 TIDAL 5
 HV0204  PID         -  HV0204
 HV0204  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0204  COUNTRY     -  US
 HV0204  USGS QUAD   -  ANNAPOLIS (2016)
 HV0204
 HV0204                         *CURRENT SURVEY CONTROL
 HV0204  ______________________________________________________________________
 HV0204* NAD 83(1986) POSITION- 38 58 56.     (N) 076 29 12.     (W)   SCALED
 HV0204* NAVD 88 ORTHO HEIGHT -     6.475 (meters)       21.24  (feet) ADJUSTED
 HV0204  ______________________________________________________________________
 HV0204  GEOID HEIGHT    -        -33.345 (meters)                     GEOID18
 HV0204  DYNAMIC HEIGHT  -          6.472 (meters)       21.23  (feet) COMP
 HV0204  MODELED GRAVITY -    980,074.9   (mgal)                       NAVD 88
 HV0204
 HV0204  VERT ORDER      -  FIRST     CLASS I
 HV0204
 HV0204.The horizontal coordinates were scaled from a map and have
 HV0204.an estimated accuracy of +/- 6 seconds.
 HV0204
 HV0204.The orthometric height was determined by differential leveling and
 HV0204.adjusted by the NATIONAL GEODETIC SURVEY
 HV0204.in June 1991.
 HV0204
 HV0204.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0204.GEOID18 height accuracy estimate available here.
 HV0204
 HV0204.This Tidal Bench Mark is designated as VM 443
 HV0204.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0204
 HV0204.Click photographs - Photos may exist for this station.
 HV0204
 HV0204.The dynamic height is computed by dividing the NAVD 88
 HV0204.geopotential number by the normal gravity value computed on the
 HV0204.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0204.degrees latitude (g = 980.6199 gals.).
 HV0204
 HV0204.The modeled gravity was interpolated from observed gravity values.
 HV0204
 HV0204;                    North         East    Units  Estimated Accuracy
 HV0204;SPC MD       -   146,160.      444,480.      MT  (+/- 180 meters Scaled)
 HV0204
 HV0204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ712158(NAD 83)
 HV0204
 HV0204                          SUPERSEDED SURVEY CONTROL
 HV0204
 HV0204  NGVD 29 (11/26/84)    6.720  (m)           22.05   (f) ADJUSTED    1 1
 HV0204
 HV0204.Superseded values are not recommended for survey control.
 HV0204
 HV0204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0204.See file dsdata.pdf to determine how the superseded data were derived.
 HV0204
 HV0204_STAMPING: 5 1928
 HV0204_MARK LOGO: CGS
 HV0204_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0204+SATELLITE: SATELLITE OBSERVATIONS - February 03, 1992
 HV0204
 HV0204  HISTORY     - Date     Condition        Report By
 HV0204  HISTORY     - 1928     MONUMENTED       CGS
 HV0204  HISTORY     - 1971     GOOD             NGS
 HV0204  HISTORY     - 19920203 GOOD             MDSHA
 HV0204  HISTORY     - 20200302 MARK NOT FOUND   NGS
 HV0204
 HV0204                          STATION DESCRIPTION
 HV0204
 HV0204'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0204'AT ANNAPOLIS.
 HV0204'AT ANNAPOLIS, AT THE U.S. NAVAL ACADEMY, 139.6 FEET
 HV0204'WEST-NORTHWEST OF THE WEST CORNER OF THE GRANITE FOUNDATION FOR
 HV0204'A MONUMENT WHICH BEARS THE LETTERS HERNDON, 138 FEET SOUTHEAST
 HV0204'OF THE SOUTHEAST CURB OF MARYLAND AVENUE, 65.7 FEET NORTHEAST
 HV0204'OF THE NORTHEAST CURB OF BLAKE ROAD, 44.0 FEET SOUTH OF THE SOUTH
 HV0204'EDGE OF AN EAST-WEST BRICK SIDEWALK, 37.6 FEET EAST OF THE EAST
 HV0204'EDGE OF A CONCRETE SIDEWALK WHICH LEADS SOUTH FROM THE BRICK WALK,
 HV0204'213.0 FEET EAST AND ACROSS THE AVENUE FROM TIDAL 23 A, ABOUT 1
 HV0204'FOOT ABOVE THE LEVEL OF THE BRICK SIDEWALK, AND SET IN THE TOP
 HV0204'OF A CONCRETE POST WHICH IS 1 INCH BELOW THE SURFACE OF THE
 HV0204'GROUND.
 HV0204
 HV0204                          STATION RECOVERY (1992)
 HV0204
 HV0204'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 HV0204'RECOVERED IN GOOD CONDITION.
 HV0204
 HV0204                          STATION RECOVERY (2020)
 HV0204
 HV0204'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (RWA)
 HV0204'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0207 ***********************************************************************
 HV0207  TIDAL BM    -  This is a Tidal Bench Mark.
 HV0207  DESIGNATION -  857 5512 TIDAL 7
 HV0207  PID         -  HV0207
 HV0207  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0207  COUNTRY     -  US
 HV0207  USGS QUAD   -  ANNAPOLIS (2016)
 HV0207
 HV0207                         *CURRENT SURVEY CONTROL
 HV0207  ______________________________________________________________________
 HV0207* NAD 83(1986) POSITION- 38 58 58.     (N) 076 28 51.     (W)   SCALED
 HV0207* NAVD 88 ORTHO HEIGHT -     1.274 (meters)        4.18  (feet) ADJUSTED
 HV0207  ______________________________________________________________________
 HV0207  GEOID HEIGHT    -        -33.356 (meters)                     GEOID18
 HV0207  DYNAMIC HEIGHT  -          1.273 (meters)        4.18  (feet) COMP
 HV0207  MODELED GRAVITY -    980,075.4   (mgal)                       NAVD 88
 HV0207
 HV0207  VERT ORDER      -  FIRST     CLASS I
 HV0207
 HV0207.The horizontal coordinates were scaled from a map and have
 HV0207.an estimated accuracy of +/- 6 seconds.
 HV0207
 HV0207.The orthometric height was determined by differential leveling and
 HV0207.adjusted by the NATIONAL GEODETIC SURVEY
 HV0207.in June 1991.
 HV0207
 HV0207.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0207.GEOID18 height accuracy estimate available here.
 HV0207
 HV0207.This Tidal Bench Mark is designated as VM 438
 HV0207.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0207
 HV0207.Click photographs - Photos may exist for this station.
 HV0207
 HV0207.The dynamic height is computed by dividing the NAVD 88
 HV0207.geopotential number by the normal gravity value computed on the
 HV0207.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0207.degrees latitude (g = 980.6199 gals.).
 HV0207
 HV0207.The modeled gravity was interpolated from observed gravity values.
 HV0207
 HV0207;                    North         East    Units  Estimated Accuracy
 HV0207;SPC MD       -   146,220.      444,980.      MT  (+/- 180 meters Scaled)
 HV0207
 HV0207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ717159(NAD 83)
 HV0207
 HV0207                          SUPERSEDED SURVEY CONTROL
 HV0207
 HV0207  NGVD 29 (11/26/84)    1.519  (m)            4.98   (f) ADJUSTED    1 1
 HV0207
 HV0207.Superseded values are not recommended for survey control.
 HV0207
 HV0207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0207.See file dsdata.pdf to determine how the superseded data were derived.
 HV0207
 HV0207_MARKER: DB = BENCH MARK DISK
 HV0207_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0207_STAMPING: 7
 HV0207_MARK LOGO: CGS
 HV0207_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV0207_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0207+STABILITY: SURFACE MOTION
 HV0207
 HV0207  HISTORY     - Date     Condition        Report By
 HV0207  HISTORY     - 1941     MONUMENTED       CGS
 HV0207  HISTORY     - 1971     GOOD             NGS
 HV0207  HISTORY     - 19950504 GOOD             NOS
 HV0207
 HV0207                          STATION DESCRIPTION
 HV0207
 HV0207'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0207'AT ANNAPOLIS.
 HV0207'AT ANNAPOLIS, AT THE U.S. NAVAL ACADEMY, NEAR THE CORNER OF
 HV0207'LUCE HALL ON SANTEE ROAD, 43.5 FEET WEST-NORTHWEST OF THE NORTH
 HV0207'CORNER OF THE BUILDING, 40.7 FEET SOUTHWEST OF THE SOUTHWEST
 HV0207'CURB OF SANTEE ROAD, 46.0 FEET SOUTHEAST OF THE SOUTHEAST EDGE
 HV0207'OF THE SIDEWALK ON THE NORTHWEST SIDE OF LUCE HALL, 14.4 FEET
 HV0207'NORTHEAST OF THE NORTHEAST EDGE OF THE SIDEWALK WHICH LEADS TO
 HV0207'THE MOST NORTHEASTERLY ENTRANCE ON THE NORTHWEST SIDE OF THE
 HV0207'BUILDING, 9.4 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE
 HV0207'CONCRETE FOUNDATION FOR AN ORIENTAL MONUMENT, ABOUT LEVEL WITH
 HV0207'THE SIDEWALK, AND SET IN THE TOP OF A CONCRETE POST WHICH IS 1
 HV0207'INCH BELOW THE SURFACE OF THE GROUND.
 HV0207
 HV0207                          STATION RECOVERY (1995)
 HV0207
 HV0207'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1995 (BLS)
 HV0207'THE BENCH MARK IS SET IN A CONCRETE MONUMENT LOCATED NEAR THE CORNER
 HV0207'OF LUCE HALL ON SANTEE ROAD IN THE US NAVAL ACADEMY, 43.5 FT (13.3 M)
 HV0207'WNW OF THE NORTH CORNER OF THE BUILDING, 5.5 M (18.0 FT) SW OF THE
 HV0207'EDGE OF THE SIDEWALK ON THE SOUTH SIDE OF SANTEE ROAD, 4.5 M (14.8 FT)
 HV0207'NE OF THE NE EDGE OF THE SIDEWALK ENTRANCE TO LUCE HALL, 3.2 M (10.5
 HV0207'FT) NW OF THE IRONWOOD (LOCUST TREE), 2.9 M (9.5 FT) SE OF THE SE
 HV0207'CORNER OF THE CONCRETE FOUNDATION FOR AN ORIENTAL MONUMENT, AND 0.1 M
 HV0207'(0.3 FT) BELOW GRADE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP4257 ***********************************************************************
 DP4257  DESIGNATION -  857 5787 4
 DP4257  PID         -  DP4257
 DP4257  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP4257  COUNTRY     -  US
 DP4257  USGS QUAD   -  SOUTH RIVER (2016)
 DP4257
 DP4257                         *CURRENT SURVEY CONTROL
 DP4257  ______________________________________________________________________
 DP4257* NAD 83(1986) POSITION- 38 53 17.38   (N) 076 32 45.09   (W)   HD_HELD1
 DP4257* NAVD 88 ORTHO HEIGHT -     7.398 (meters)       24.27  (feet) ADJUSTED
 DP4257  ______________________________________________________________________
 DP4257  GEOID HEIGHT    -        -33.372 (meters)                     GEOID18
 DP4257  DYNAMIC HEIGHT  -          7.394 (meters)       24.26  (feet) COMP
 DP4257  MODELED GRAVITY -    980,062.8   (mgal)                       NAVD 88
 DP4257
 DP4257  VERT ORDER      -  FIRST     CLASS II
 DP4257
 DP4257.The horizontal coordinates were determined by differentially corrected
 DP4257.hand held GPS observations or other comparable positioning techniques
 DP4257.and have an estimated accuracy of +/- 3 meters.
 DP4257
 DP4257.The orthometric height was determined by differential leveling and
 DP4257.adjusted by the NATIONAL GEODETIC SURVEY
 DP4257.in November 2014.
 DP4257
 DP4257.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP4257.GEOID18 height accuracy estimate available here.
 DP4257
 DP4257.Click photographs - Photos may exist for this station.
 DP4257
 DP4257.The dynamic height is computed by dividing the NAVD 88
 DP4257.geopotential number by the normal gravity value computed on the
 DP4257.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP4257.degrees latitude (g = 980.6199 gals.).
 DP4257
 DP4257.The modeled gravity was interpolated from observed gravity values.
 DP4257
 DP4257;                    North         East    Units  Estimated Accuracy
 DP4257;SPC MD       -   135,689.1     439,400.4     MT  (+/- 3 meters HH1 GPS) 
 DP4257
 DP4257_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6592705501(NAD 83)
 DP4257
 DP4257                          SUPERSEDED SURVEY CONTROL
 DP4257
 DP4257  NAVD 88 (11/04/14)    7.489  (m)           24.57   (f) SUPERSEDED  1 2
 DP4257  NAVD 88 (08/27/14)    7.489  (m)           24.57   (f) SUPERSEDED  1 2
 DP4257
 DP4257.Superseded values are not recommended for survey control.
 DP4257
 DP4257.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DP4257.See file dsdata.pdf to determine how the superseded data were derived.
 DP4257
 DP4257_MARKER: F = FLANGE-ENCASED ROD
 DP4257_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP4257_STAMPING: 5787 NO 4 2014
 DP4257_MARK LOGO: NGS
 DP4257_PROJECTION: FLUSH
 DP4257_MAGNETIC: I = MARKER IS A STEEL ROD
 DP4257_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP4257_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP4257+SATELLITE: SATELLITE OBSERVATIONS - June 20, 2014
 DP4257_ROD/PIPE-DEPTH: 9.14 meters
 DP4257_SLEEVE-DEPTH  : 1.22 meters
 DP4257
 DP4257  HISTORY     - Date     Condition        Report By
 DP4257  HISTORY     - 20140620 MONUMENTED       NGS
 DP4257
 DP4257                          STATION DESCRIPTION
 DP4257
 DP4257'DESCRIBED BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 DP4257'THE STATION IS LOCATED ABOUT 12.4 KM (7.7 MI) NORTH OF DEALE, 11.0 KM
 DP4257'(6.8 MI) SOUTH-SOUTHWEST OF ANNAPOLIS AND 2.1 KM (1.3 MI) SOUTHEAST OF
 DP4257'SOUTH RIVER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DP4257'
 DP4257'NOTE-MUST CONTACT THE SECURITY DEPARTMENT AT THE SMITHSONIAN
 DP4257'ENVIRONMENTAL RESEARCH CENTER (SERC) AT 443-482-229 FOR PERMISSION TO
 DP4257'ENTER THIS FEDERAL PROPERTY.
 DP4257'
 DP4257'TO REACH FROM THE INTERSECTION OF MD-214 (CENTRAL AVENUE) AND MD-468
 DP4257'(MUDDY CREEK ROAD), GO 1.0 MI (1.6 KM) SOUTH ALONG MD-468 TO CONTEES
 DP4257'WHARF ROAD, ON YOUR LEFT, THENCE 1.1 MI (1.8 KM) EAST ON CONTEES WHARF
 DP4257'ROAD TO SERC PROPERTY.  GO LEFT, TOWARD THE REED EDUCATION CENTER, FOR
 DP4257'0.2 MI (0.3 KM) THE MARK IN ON THE RIGHT.
 DP4257'
 DP4257'NOTE-ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
 DP4257'
 DP4257'IT IS 15.10 M (49.5 FT) WEST OF THE CENTERLINE OF A GRAVEL ROAD, 14.55
 DP4257'M (47.7 FT) SOUTH OF THE CENTERLINE OF THE ROAD, 9.86 M (32.3 FT)
 DP4257'SOUTHEAST OF THE SOUTHWEST CORNER OF CONCRETE CULVERT, ABOUT 0.05 M
 DP4257'(0.2 FT) LOWER THAN THE GROUND AND 1.0 FT (0.3 M) NORTHWEST OF A
 DP4257'ORANGE CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP4256 ***********************************************************************
 DP4256  DESIGNATION -  857 5787 5
 DP4256  PID         -  DP4256
 DP4256  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP4256  COUNTRY     -  US
 DP4256  USGS QUAD   -  SOUTH RIVER (2016)
 DP4256
 DP4256                         *CURRENT SURVEY CONTROL
 DP4256  ______________________________________________________________________
 DP4256* NAD 83(1986) POSITION- 38 53 21.37   (N) 076 32 56.44   (W)   HD_HELD1
 DP4256* NAVD 88 ORTHO HEIGHT -    17.424 (meters)       57.17  (feet) ADJUSTED
 DP4256  ______________________________________________________________________
 DP4256  GEOID HEIGHT    -        -33.363 (meters)                     GEOID18
 DP4256  DYNAMIC HEIGHT  -         17.414 (meters)       57.13  (feet) COMP
 DP4256  MODELED GRAVITY -    980,062.9   (mgal)                       NAVD 88
 DP4256
 DP4256  VERT ORDER      -  FIRST     CLASS II
 DP4256
 DP4256.The horizontal coordinates were determined by differentially corrected
 DP4256.hand held GPS observations or other comparable positioning techniques
 DP4256.and have an estimated accuracy of +/- 3 meters.
 DP4256
 DP4256.The orthometric height was determined by differential leveling and
 DP4256.adjusted by the NATIONAL GEODETIC SURVEY
 DP4256.in November 2014.
 DP4256
 DP4256.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP4256.GEOID18 height accuracy estimate available here.
 DP4256
 DP4256.Click photographs - Photos may exist for this station.
 DP4256
 DP4256.The dynamic height is computed by dividing the NAVD 88
 DP4256.geopotential number by the normal gravity value computed on the
 DP4256.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP4256.degrees latitude (g = 980.6199 gals.).
 DP4256
 DP4256.The modeled gravity was interpolated from observed gravity values.
 DP4256
 DP4256;                    North         East    Units  Estimated Accuracy
 DP4256;SPC MD       -   135,810.8     439,126.2     MT  (+/- 3 meters HH1 GPS) 
 DP4256
 DP4256_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6565605629(NAD 83)
 DP4256
 DP4256                          SUPERSEDED SURVEY CONTROL
 DP4256
 DP4256  NAVD 88 (11/04/14)   17.515  (m)           57.46   (f) SUPERSEDED  1 2
 DP4256  NAVD 88 (08/27/14)   17.515  (m)           57.46   (f) SUPERSEDED  1 2
 DP4256
 DP4256.Superseded values are not recommended for survey control.
 DP4256
 DP4256.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DP4256.See file dsdata.pdf to determine how the superseded data were derived.
 DP4256
 DP4256_MARKER: F = FLANGE-ENCASED ROD
 DP4256_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP4256_STAMPING: 5787 NO 5 2014
 DP4256_MARK LOGO: NGS
 DP4256_PROJECTION: FLUSH
 DP4256_MAGNETIC: I = MARKER IS A STEEL ROD
 DP4256_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP4256_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP4256+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2014
 DP4256_ROD/PIPE-DEPTH: 10.9 meters
 DP4256_SLEEVE-DEPTH  : 1.22 meters
 DP4256
 DP4256  HISTORY     - Date     Condition        Report By
 DP4256  HISTORY     - 20140606 MONUMENTED       NGS
 DP4256
 DP4256                          STATION DESCRIPTION
 DP4256
 DP4256'DESCRIBED BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 DP4256'THE STATION IS LOCATED ABOUT 12.5 KM (7.8 MI) NORTH OF DEALE, 11.0 KM
 DP4256'(6.8 MI) SOUTH-SOUTHWEST OF ANNAPOLIS AND 1.9 KM (1.2 MI) SOUTHEAST OF
 DP4256'SOUTH RIVER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DP4256'
 DP4256'NOTE-MUST CONTACT THE SECURITY DEPARTMENT AT THE SMITHSONIAN
 DP4256'ENVIRONMENTAL RESEARCH CENTER (SERC) AT 443-482-2298 FOR PERMISSION TO
 DP4256'ENTER THIS FEDERAL PROPERTY.
 DP4256'
 DP4256'TO REACH FROM THE INTERSECTION OF MD-214 (CENTRAL AVENUE) AND MD-468
 DP4256'(MUDDY CREEK ROAD), GO 1.0 MI (1.6 KM) SOUTH ALONG MD-468 TO CONTEES
 DP4256'WHARF ROAD, ON YOUR LEFT, THENCE 1.1 MI (1.8 KM) EAST ON CONTEES WHARF
 DP4256'ROAD TO THE SMITHSONIAN ENVIRONMENTAL RESEARCH CENTER (SERC) PROPERTY.
 DP4256'GO LEFT, TOWARD THE REED EDUCATION CENTER, FOR 83.8 M (274.9 FT) THE
 DP4256'MARK IN ON THE RIGHT AT SERC BUILDING 290.
 DP4256'
 DP4256'NOTE-ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
 DP4256'
 DP4256'IT IS 10.06 M (33.0 FT) SOUTH OF THE CENTERLINE OF THE ROAD, 8.15 M
 DP4256'(26.7 FT) WEST OF 1.75 M (5.7 FT) CIRCUMFERENCE BLACK OAK, 2.92 M (9.6
 DP4256'FT) NORTH OF THE NORTHWEST CORNER OF SERC BUILDING 290 AND ABOUT 0.06
 DP4256'M (0.2 FT) LOWER THAN THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP4258 ***********************************************************************
 DP4258  DESIGNATION -  857 5787 TIDAL 3
 DP4258  PID         -  DP4258
 DP4258  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP4258  COUNTRY     -  US
 DP4258  USGS QUAD   -  SOUTH RIVER (2016)
 DP4258
 DP4258                         *CURRENT SURVEY CONTROL
 DP4258  ______________________________________________________________________
 DP4258* NAD 83(1986) POSITION- 38 53 12.76   (N) 076 32 32.45   (W)   HD_HELD1
 DP4258* NAVD 88 ORTHO HEIGHT -     5.019 (meters)       16.47  (feet) ADJUSTED
 DP4258  ______________________________________________________________________
 DP4258  GEOID HEIGHT    -        -33.383 (meters)                     GEOID18
 DP4258  DYNAMIC HEIGHT  -          5.016 (meters)       16.46  (feet) COMP
 DP4258  MODELED GRAVITY -    980,062.6   (mgal)                       NAVD 88
 DP4258
 DP4258  VERT ORDER      -  FIRST     CLASS II
 DP4258
 DP4258.The horizontal coordinates were determined by differentially corrected
 DP4258.hand held GPS observations or other comparable positioning techniques
 DP4258.and have an estimated accuracy of +/- 3 meters.
 DP4258
 DP4258.The orthometric height was determined by differential leveling and
 DP4258.adjusted by the NATIONAL GEODETIC SURVEY
 DP4258.in November 2014.
 DP4258
 DP4258.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP4258.GEOID18 height accuracy estimate available here.
 DP4258
 DP4258.Click photographs - Photos may exist for this station.
 DP4258
 DP4258.The dynamic height is computed by dividing the NAVD 88
 DP4258.geopotential number by the normal gravity value computed on the
 DP4258.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP4258.degrees latitude (g = 980.6199 gals.).
 DP4258
 DP4258.The modeled gravity was interpolated from observed gravity values.
 DP4258
 DP4258;                    North         East    Units  Estimated Accuracy
 DP4258;SPC MD       -   135,548.2     439,705.7     MT  (+/- 3 meters HH1 GPS) 
 DP4258
 DP4258_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6622905353(NAD 83)
 DP4258
 DP4258                          SUPERSEDED SURVEY CONTROL
 DP4258
 DP4258  NAVD 88 (11/04/14)    5.109  (m)           16.76   (f) SUPERSEDED  1 2
 DP4258  NAVD 88 (08/27/14)    5.109  (m)           16.76   (f) SUPERSEDED  1 2
 DP4258
 DP4258.Superseded values are not recommended for survey control.
 DP4258
 DP4258.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DP4258.See file dsdata.pdf to determine how the superseded data were derived.
 DP4258
 DP4258_MARKER: DB = BENCH MARK DISK
 DP4258_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DP4258_STAMPING: NO 3 1971
 DP4258_MARK LOGO: CGS
 DP4258_PROJECTION: FLUSH
 DP4258_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP4258_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DP4258+STABILITY: SURFACE MOTION
 DP4258
 DP4258  HISTORY     - Date     Condition        Report By
 DP4258  HISTORY     - 1971     MONUMENTED       CGS
 DP4258  HISTORY     - 20140618 GOOD             NGS
 DP4258
 DP4258                          STATION DESCRIPTION
 DP4258
 DP4258'DESCRIBED BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 DP4258'THE STATION IS LOCATED ABOUT 12.3 KM (7.6 MI) NORTH OF DEALE, 11.1 KM
 DP4258'(6.9 MI) SOUTH-SOUTHWEST OF ANNAPOLIS AND 2.4 KM (1.5 MI) SOUTHEAST OF
 DP4258'SOUTH RIVER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DP4258'
 DP4258'NOTE-MUST CONTACT THE SECURITY DEPARTMENT AT THE SMITHSONIAN
 DP4258'ENVIRONMENTAL RESEARCH CENTER (SERC) AT 443-482-2298 FOR PERMISSION TO
 DP4258'ENTER THIS FEDERAL PROPERTY.
 DP4258'
 DP4258'TO REACH FROM THE INTERSECTION OF MD-214 (CENTRAL AVE) AND MD-468
 DP4258'(MUDDY CREEK ROAD), GO 1.0 MI (1.6 KM) SOUTH ALONG MD-468 TO CONTEES
 DP4258'WHARF ROAD, ON YOUR LEFT, THENCE 1.1 MI (1.8 KM) EAST ON CONTEES WHARF
 DP4258'ROAD TO SERC PROPERTY.  TURN LEFT AND CONTINUE FOR 0.5 MI (0.8 KM)
 DP4258'HEADING TOWARD THE REED EDUCATION CENTER.  THE MARK IS ON THE RIGHT
 DP4258'SIDE OF THE DRIVE WHICH LEAD TO THE PIER.
 DP4258'
 DP4258'IT IS 6.85 M (22.5 FT) NORTHEAST OF 2.29 M (7.5 FT) CIRCUMFERENCE
 DP4258'POPLAR TREE, 2.90 M (9.5 FT) WEST OF THE CENTERLINE OF THE ROAD, 1.57
 DP4258'M (5.2 FT) SOUTH OF A UTILITY POLE NUMBERED 471039 AND SET IN THE TOP
 DP4258'OF A 12-CM (5 INCH) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8036 ***********************************************************************
 AJ8036  FBN         -  This is a Federal Base Network Control Station.
 AJ8036  TIDAL BM    -  This is a Tidal Bench Mark.
 AJ8036  DESIGNATION -  857 7330 E TIDAL
 AJ8036  PID         -  AJ8036
 AJ8036  STATE/COUNTY-  MD/CALVERT
 AJ8036  COUNTRY     -  US
 AJ8036  USGS QUAD   -  SOLOMONS ISLAND (2016)
 AJ8036
 AJ8036                         *CURRENT SURVEY CONTROL
 AJ8036  ______________________________________________________________________
 AJ8036* NAD 83(2011) POSITION- 38 19 10.23204(N) 076 27 11.46590(W)   ADJUSTED
 AJ8036* NAD 83(2011) ELLIP HT-   -31.350 (meters)        (06/27/12)   ADJUSTED
 AJ8036* NAD 83(2011) EPOCH   -  2010.00
 AJ8036* NAVD 88 ORTHO HEIGHT -     3.0   (meters)       10.    (feet) GPS OBS
 AJ8036  ______________________________________________________________________
 AJ8036  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8036  GEOID HEIGHT    -        -34.334 (meters)                     GEOID99
 AJ8036  GEOID HEIGHT    -        -34.406 (meters)                     GEOID18
 AJ8036  NAD 83(2011) X  -  1,173,656.641 (meters)                     COMP
 AJ8036  NAD 83(2011) Y  - -4,871,094.637 (meters)                     COMP
 AJ8036  NAD 83(2011) Z  -  3,933,310.565 (meters)                     COMP
 AJ8036  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 AJ8036
 AJ8036  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8036  Standards:
 AJ8036         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8036            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8036  -------------------------------------------------------------------
 AJ8036  NETWORK    0.92   1.92           0.40   0.35   0.98      0.02401171
 AJ8036  -------------------------------------------------------------------
 AJ8036  Click here for local accuracies and other accuracy information.
 AJ8036
 AJ8036.This is a reference station for the SOLOMONS ISLAND
 AJ8036.National Continuously Operating Reference Station (SOL1).
 AJ8036
 AJ8036.The horizontal coordinates were established by GPS observations
 AJ8036.and adjusted by the National Geodetic Survey in June 2012.
 AJ8036
 AJ8036.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8036.been affixed to the stable North American tectonic plate. See 
 AJ8036.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8036
 AJ8036.The horizontal coordinates are valid at the epoch date displayed above
 AJ8036.which is a decimal equivalence of Year/Month/Day.
 AJ8036
 AJ8036.The orthometric height was determined by GPS observations and a
 AJ8036.high-resolution geoid model.
 AJ8036
 AJ8036.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8036.GEOID18 height accuracy estimate available here.
 AJ8036
 AJ8036.This Tidal Bench Mark is designated as VM 455
 AJ8036.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 AJ8036
 AJ8036.Click photographs - Photos may exist for this station.
 AJ8036
 AJ8036.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8036
 AJ8036.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8036
 AJ8036.The ellipsoidal height was determined by GPS observations
 AJ8036.and is referenced to NAD 83.
 AJ8036
 AJ8036. The following values were computed from the NAD 83(2011) position.
 AJ8036
 AJ8036;                    North         East     Units Scale Factor Converg.
 AJ8036;SPC MD       -    72,611.601   447,818.538   MT  0.99999666   +0 20 35.5
 AJ8036;SPC MD       -   238,226.56  1,469,217.99   sFT  0.99999666   +0 20 35.5
 AJ8036;UTM  18      - 4,242,265.156   372,966.601   MT  0.99979874   -0 54 04.2
 AJ8036
 AJ8036!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8036!SPC MD       -   1.00000492  x   0.99999666  =   1.00000158
 AJ8036!UTM  18      -   1.00000492  x   0.99979874  =   0.99980366
 AJ8036
 AJ8036_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7296642265(NAD 83)
 AJ8036
 AJ8036|---------------------------------------------------------------------|
 AJ8036| PID    Reference Object                     Distance      Geod. Az  |
 AJ8036|                                                           dddmmss.s |
 AJ8036| AI3287 SOLOMONS ISLAND CORS ARP             94.159 METERS 22059     |
 AJ8036|---------------------------------------------------------------------|
 AJ8036
 AJ8036                          SUPERSEDED SURVEY CONTROL
 AJ8036
 AJ8036  NAD 83(2007)-  38 19 10.23223(N)    076 27 11.46657(W) AD(2002.00) 0
 AJ8036  ELLIP H (02/10/07)  -31.329  (m)                       GP(2002.00)    
 AJ8036  NAD 83(1991)-  38 19 10.23175(N)    076 27 11.46708(W) AD(       ) A
 AJ8036  ELLIP H (02/12/02)  -31.324  (m)                       GP(       ) 4 1
 AJ8036
 AJ8036.Superseded values are not recommended for survey control.
 AJ8036
 AJ8036.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8036.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8036
 AJ8036_MARKER: DJ = TIDAL STATION DISK
 AJ8036_SETTING: 47 = GALVANIZED STEEL PIPE W/O SLEEVE (10 FT.+)
 AJ8036_STAMPING: 7330 E 1980
 AJ8036_MARK LOGO: NOS
 AJ8036_PROJECTION: RECESSED 3 CENTIMETERS
 AJ8036_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8036_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ8036_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8036+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2023
 AJ8036_ROD/PIPE-DEPTH: 12 meters
 AJ8036
 AJ8036  HISTORY     - Date     Condition        Report By
 AJ8036  HISTORY     - 1980     MONUMENTED       NOS
 AJ8036  HISTORY     - 20000216 GOOD             NGS
 AJ8036  HISTORY     - 20230529 GOOD             MDSHA
 AJ8036
 AJ8036                          STATION DESCRIPTION
 AJ8036
 AJ8036'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 AJ8036'THE STATION IS LOCATED IN SOLOMONS ON THE SOUTHEAST SIDE OF THE
 AJ8036'ENTRANCE DRIVE OF THE SOLOMONS MARINA ON CHARLES STREET AND LOCATED
 AJ8036'JUST SOUTH OF THE JUNCTION OF CHARLES AND WILLIAMS STREET.
 AJ8036'OWNERSHIP--CITY OF SOLOMONS ISLAND.  TO REACH THE STATION FROM THE
 AJ8036'JUNCTION OF STATE HIGHWAYS 2 AND 4 LOCATED AT THE NORTHEAST END OF THE
 AJ8036'HIGHWAY 4 BRIDGE OVER THE PATUXENT RIVER AND AT THE VISITOR CENTER
 AJ8036'(REST AREA) ON THE NORTH SIDE OF SOLOMONS, GO SOUTH ON HIGHWAY 2 FOR
 AJ8036'1.53 KM (0.95 MI) TO THE JUNCTION OF CHARLES AND PATUXENT STREETS IN
 AJ8036'SOLOMONS, BEAR LEFT, ON CHARLES STREET, SOUTHEASTERLY FOR 0.4 KM (0.25
 AJ8036'MI) TO THE ENTRANCE OF THE SOLOMONS MARINA AND THE STATION ON THE
 AJ8036'SOUTHEAST SIDE OF THE ENTRANCE DRIVE.  THE STATION IS AN NOS TIDAL
 AJ8036'DISK CRIMPED TO THE TOP OF A GALVANIZED STEEL ROD, ENCASED IN A 10 CM
 AJ8036'PVC PIPE ABOUT 8 CM BELOW THE GROUND, LOCATED 6.40 M (21.00 FT)
 AJ8036'NORTHEAST OF THE CENTER OF CHARLES STREET, 2.02 M (6.63 FT) NORTH OF
 AJ8036'THE WEST CORNER POST OF A CHAIN LINK FENCE, 1.83 M (6.00 FT) SOUTHWEST
 AJ8036'OF THE SOUTHWEST WOOD POST SUPORTING A SIGN (SOLOMONS MARINA) , 1.56 M
 AJ8036'(5.12 FT) WEST-SOUTHWEST OF THE SOUTH CORNER OF A WOOD POST SHRUB
 AJ8036'PLANTER AROUND THE MARINA SIGN, 1.04 M (3.41 FT) NORTHWEST OF THE
 AJ8036'FENCE AND 0.25 M (0.82 FT) SOUTHWEST OF A FIBERGLASS WITNESS POST.
 AJ8036
 AJ8036                          STATION RECOVERY (2023)
 AJ8036
 AJ8036'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 AJ8036'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8037 ***********************************************************************
 AJ8037  FBN         -  This is a Federal Base Network Control Station.
 AJ8037  DESIGNATION -  857 7330 F TIDAL
 AJ8037  PID         -  AJ8037
 AJ8037  STATE/COUNTY-  MD/CALVERT
 AJ8037  COUNTRY     -  US
 AJ8037  USGS QUAD   -  SOLOMONS ISLAND (2016)
 AJ8037
 AJ8037                         *CURRENT SURVEY CONTROL
 AJ8037  ______________________________________________________________________
 AJ8037* NAD 83(2011) POSITION- 38 19 10.72566(N) 076 27 21.40522(W)   ADJUSTED
 AJ8037* NAD 83(2011) ELLIP HT-   -32.933 (meters)        (06/27/12)   ADJUSTED
 AJ8037* NAD 83(2011) EPOCH   -  2010.00
 AJ8037* NAVD 88 ORTHO HEIGHT -     1.4   (meters)        5.    (feet) GPS OBS
 AJ8037  ______________________________________________________________________
 AJ8037  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8037  GEOID HEIGHT    -        -34.326 (meters)                     GEOID99
 AJ8037  GEOID HEIGHT    -        -34.398 (meters)                     GEOID18
 AJ8037  NAD 83(2011) X  -  1,173,419.414 (meters)                     COMP
 AJ8037  NAD 83(2011) Y  - -4,871,140.804 (meters)                     COMP
 AJ8037  NAD 83(2011) Z  -  3,933,321.525 (meters)                     COMP
 AJ8037  LAPLACE CORR    -         -5.24  (seconds)                    DEFLEC18
 AJ8037
 AJ8037  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8037  Standards:
 AJ8037         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8037            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8037  -------------------------------------------------------------------
 AJ8037  NETWORK    0.48   0.98           0.21   0.18   0.50      0.12359686
 AJ8037  -------------------------------------------------------------------
 AJ8037  Click here for local accuracies and other accuracy information.
 AJ8037
 AJ8037.This is a reference station for the SOLOMONS ISLAND
 AJ8037.National Continuously Operating Reference Station (SOL1).
 AJ8037
 AJ8037.The horizontal coordinates were established by GPS observations
 AJ8037.and adjusted by the National Geodetic Survey in June 2012.
 AJ8037
 AJ8037.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8037.been affixed to the stable North American tectonic plate. See 
 AJ8037.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8037
 AJ8037.The horizontal coordinates are valid at the epoch date displayed above
 AJ8037.which is a decimal equivalence of Year/Month/Day.
 AJ8037
 AJ8037.The orthometric height was determined by GPS observations and a
 AJ8037.high-resolution geoid model.
 AJ8037
 AJ8037.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8037.GEOID18 height accuracy estimate available here.
 AJ8037
 AJ8037.Click photographs - Photos may exist for this station.
 AJ8037
 AJ8037.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8037
 AJ8037.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8037
 AJ8037.The ellipsoidal height was determined by GPS observations
 AJ8037.and is referenced to NAD 83.
 AJ8037
 AJ8037. The following values were computed from the NAD 83(2011) position.
 AJ8037
 AJ8037;                    North         East     Units Scale Factor Converg.
 AJ8037;SPC MD       -    72,625.378   447,577.010   MT  0.99999664   +0 20 29.3
 AJ8037;SPC MD       -   238,271.76  1,468,425.57   sFT  0.99999664   +0 20 29.3
 AJ8037;UTM  18      - 4,242,284.172   372,725.477   MT  0.99979949   -0 54 10.4
 AJ8037
 AJ8037!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8037!SPC MD       -   1.00000517  x   0.99999664  =   1.00000181
 AJ8037!UTM  18      -   1.00000517  x   0.99979949  =   0.99980466
 AJ8037
 AJ8037_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7272542284(NAD 83)
 AJ8037
 AJ8037|---------------------------------------------------------------------|
 AJ8037| PID    Reference Object                     Distance      Geod. Az  |
 AJ8037|                                                           dddmmss.s |
 AJ8037| AI3287 SOLOMONS ISLAND CORS ARP            199.341 METERS 11539     |
 AJ8037|---------------------------------------------------------------------|
 AJ8037
 AJ8037                          SUPERSEDED SURVEY CONTROL
 AJ8037
 AJ8037  NAD 83(2007)-  38 19 10.72582(N)    076 27 21.40592(W) AD(2002.00) 0
 AJ8037  ELLIP H (02/10/07)  -32.912  (m)                       GP(2002.00)    
 AJ8037  NAD 83(1991)-  38 19 10.72537(N)    076 27 21.40638(W) AD(       ) A
 AJ8037  ELLIP H (02/12/02)  -32.904  (m)                       GP(       ) 4 1
 AJ8037
 AJ8037.Superseded values are not recommended for survey control.
 AJ8037
 AJ8037.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8037.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8037
 AJ8037_MARKER: DJ = TIDAL STATION DISK
 AJ8037_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 AJ8037_SP_SET: RETAINING WALL
 AJ8037_STAMPING: 857 7330 F 1998
 AJ8037_MARK LOGO: NOS
 AJ8037_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8037_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8037+STABILITY: SURFACE MOTION
 AJ8037_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8037+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2022
 AJ8037
 AJ8037  HISTORY     - Date     Condition        Report By
 AJ8037  HISTORY     - 1998     MONUMENTED       NOS
 AJ8037  HISTORY     - 20000216 GOOD             NGS
 AJ8037  HISTORY     - 20050726 GOOD             USPSQD
 AJ8037  HISTORY     - 20220731 GOOD             WTBALL
 AJ8037
 AJ8037                          STATION DESCRIPTION
 AJ8037
 AJ8037'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 AJ8037'THE STATION IS LOCATED IN SOLOMONS ABOUT 0.16 KM (0.10 MI) SOUTHEAST
 AJ8037'OF THE JUNCTION OF PATUXENT AND CHARLES STREETS, ON THE NORTHEAST SIDE
 AJ8037'OF CHARLES STREET IN THE TOP OF THE SOUTHWEST SIDE OF A CONCRETE
 AJ8037'RETAINING WALL ENCLOSING A BRICK PUMP HOUSE.  OWNERSHIP--CITY OF
 AJ8037'SOLOMONS.  TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 2
 AJ8037'AND 4 LOCATED AT THE NORTHEAST END OF THE HIGHWAY 4 BRIDGE OVER THE
 AJ8037'PATUXENT RIVER AND AT THE VISITOR CENTER (REST AREA) ON THE NORTH SIDE
 AJ8037'OF SOLOMONS, GO SOUTH ON HIGHWAY 2 FOR 1.53 KM (0.95 MI) TO THE
 AJ8037'JUNCTION OF PATUXENT STREET AND CHARLES STREET, BEAR LEFT,
 AJ8037'SOUTHEASTERLY ON CHARLES STREET FOR 0.16 KM (0.10 MI) TO A BRICK
 AJ8037'PUMPING STATION BUILDING ON THE LEFT AND THE STATION ABOUT IN THE
 AJ8037'CENTER AND IN THE TOP OF THE WEST SIDE OF A CONCRETE RETAINING WALL
 AJ8037'ENCLOSING THE PUMPING STATION.  THE STATION IS AN NOS TIDAL STATION
 AJ8037'DISK SET IN A DRILL HOLE IN THE TOP OF THE RETAINING WALL ABOUT 0.77 M
 AJ8037'(2.53 FT) ABOVE THE GROUND, LOCATED 8.69 M (28.51 FT) NORTH OF THE
 AJ8037'CENTER OF CHARLES STREET, 3.33 M (10.93 FT) NORTHWEST OF A RAILROAD
 AJ8037'SPIKE IN THE BASE OF A POWER POLE (NUMBER 36) WITH TWO TRANSFORMERS,
 AJ8037'2.14 M (7.02 FT) WEST OF THE WEST FACE OF THE PUMPING STATION BUILDING
 AJ8037'AND 1.59 M (5.22 FT) SOUTH OF THE SOUTH WOOD LEG SUPPORTING A SET OF
 AJ8037'ELECTRIC METERS.
 AJ8037
 AJ8037                          STATION RECOVERY (2005)
 AJ8037
 AJ8037'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 AJ8037'AS DESCRIBED
 AJ8037
 AJ8037                          STATION RECOVERY (2022)
 AJ8037
 AJ8037'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2022 (JMB)
 AJ8037'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1147 ***********************************************************************
 HU1147  DESIGNATION -  857 TIDAL 1
 HU1147  PID         -  HU1147
 HU1147  STATE/COUNTY-  MD/TALBOT
 HU1147  COUNTRY     -  US
 HU1147  USGS QUAD   -  FOWLING CREEK (2017)
 HU1147
 HU1147                         *CURRENT SURVEY CONTROL
 HU1147  ______________________________________________________________________
 HU1147* NAD 83(1986) POSITION- 38 45 27.9    (N) 075 59 52.8    (W)   HD_HELD2
 HU1147* NAVD 88 ORTHO HEIGHT -     1.042 (meters)        3.42  (feet) ADJUSTED
 HU1147  ______________________________________________________________________
 HU1147  GEOID HEIGHT    -        -34.831 (meters)                     GEOID18
 HU1147  DYNAMIC HEIGHT  -          1.042 (meters)        3.42  (feet) COMP
 HU1147  MODELED GRAVITY -    980,034.4   (mgal)                       NAVD 88
 HU1147
 HU1147  VERT ORDER      -  FIRST     CLASS I
 HU1147
 HU1147.The horizontal coordinates were established by autonomous hand held GPS
 HU1147.observations and have an estimated accuracy of +/- 10 meters.
 HU1147
 HU1147.The orthometric height was determined by differential leveling and
 HU1147.adjusted by the NATIONAL GEODETIC SURVEY
 HU1147.in June 1991.
 HU1147
 HU1147.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1147.GEOID18 height accuracy estimate available here.
 HU1147
 HU1147.Click photographs - Photos may exist for this station.
 HU1147
 HU1147.The dynamic height is computed by dividing the NAVD 88
 HU1147.geopotential number by the normal gravity value computed on the
 HU1147.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1147.degrees latitude (g = 980.6199 gals.).
 HU1147
 HU1147.The modeled gravity was interpolated from observed gravity values.
 HU1147
 HU1147;                    North         East    Units  Estimated Accuracy
 HU1147;SPC MD       -   121,593.      487,089.      MT  (+/- 10 meters HH2 GPS)
 HU1147
 HU1147_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1328690367(NAD 83)
 HU1147
 HU1147                          SUPERSEDED SURVEY CONTROL
 HU1147
 HU1147  NGVD 29 (11/26/84)    1.280  (m)            4.20   (f) ADJUSTED    1 1
 HU1147
 HU1147.Superseded values are not recommended for survey control.
 HU1147
 HU1147.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1147.See file dsdata.pdf to determine how the superseded data were derived.
 HU1147
 HU1147_MARKER: DB = BENCH MARK DISK
 HU1147_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU1147_SP_SET: BRIDGE ABUTMENT
 HU1147_STAMPING: 1 1944
 HU1147_MARK LOGO: CGS
 HU1147_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1147_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU1147_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU1147+SATELLITE: SATELLITE OBSERVATIONS - June 08, 2005
 HU1147
 HU1147  HISTORY     - Date     Condition        Report By
 HU1147  HISTORY     - 1944     MONUMENTED       CGS
 HU1147  HISTORY     - 1971     GOOD             NGS
 HU1147  HISTORY     - 20000920 GOOD             MDSHA
 HU1147  HISTORY     - 20020312 GOOD             USPSQD
 HU1147  HISTORY     - 20050608 GOOD             USPSQD
 HU1147
 HU1147                          STATION DESCRIPTION
 HU1147
 HU1147'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU1147'3.8 MI SE FROM EASTON.
 HU1147'ABOUT 3.8 MILES SOUTHEAST ALONG STATE HIGHWAY 331 FROM THE
 HU1147'INTERSECTION OF U.S. HIGHWAY 50 AT EASTON, AT THE HIGHWAY BRIDGE
 HU1147'OVER THE CHOPTANK RIVER, SET IN THE TOP OF THE SOUTH CORNER OF
 HU1147'THE CONCRETE PIER AT THE SOUTHWEST END OF THE NORTHWEST ABUTMENT
 HU1147'OF THE HIGHWAY BRIDGE, 15.8 FEET SOUTHWEST OF THE CENTER LINE OF
 HU1147'THE HIGHWAY, 3 FEET SOUTHEAST OF THE NORTHWEST CONCRETE ABUTMENT
 HU1147'AND 6 1/2 FEET BELOW THE LEVEL OF THE HIGHWAY.
 HU1147
 HU1147                          STATION RECOVERY (2000)
 HU1147
 HU1147'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HU1147'RECOVERED AS DESCRIBED.
 HU1147
 HU1147                          STATION RECOVERY (2002)
 HU1147
 HU1147'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HU1147'STATION IS DIRECTLY UNDER THE SW END OF THE S MAIN BRIDGE GIRDER.
 HU1147
 HU1147                          STATION RECOVERY (2005)
 HU1147
 HU1147'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 HU1147'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1138 ***********************************************************************
 JW1138  DESIGNATION -  87 BC RESET
 JW1138  PID         -  JW1138
 JW1138  STATE/COUNTY-  MD/GARRETT
 JW1138  COUNTRY     -  US
 JW1138  USGS QUAD   -  OAKLAND (2016)
 JW1138
 JW1138                         *CURRENT SURVEY CONTROL
 JW1138  ______________________________________________________________________
 JW1138* NAD 83(1986) POSITION- 39 23 29.13   (N) 079 27 49.32   (W)   HD_HELD1
 JW1138* NAVD 88 ORTHO HEIGHT -   730.162 (meters)     2395.54  (feet) ADJUSTED
 JW1138  ______________________________________________________________________
 JW1138  GEOID HEIGHT    -        -31.113 (meters)                     GEOID18
 JW1138  DYNAMIC HEIGHT  -        729.663 (meters)     2393.90  (feet) COMP
 JW1138  MODELED GRAVITY -    979,918.6   (mgal)                       NAVD 88
 JW1138
 JW1138  VERT ORDER      -  FIRST     CLASS II
 JW1138
 JW1138.The horizontal coordinates were determined by differentially corrected
 JW1138.hand held GPS observations or other comparable positioning techniques
 JW1138.and have an estimated accuracy of +/- 3 meters.
 JW1138
 JW1138.The orthometric height was determined by differential leveling and
 JW1138.adjusted by the NATIONAL GEODETIC SURVEY
 JW1138.in June 1991.
 JW1138
 JW1138.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1138.GEOID18 height accuracy estimate available here.
 JW1138
 JW1138.Click photographs - Photos may exist for this station.
 JW1138
 JW1138.The dynamic height is computed by dividing the NAVD 88
 JW1138.geopotential number by the normal gravity value computed on the
 JW1138.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1138.degrees latitude (g = 980.6199 gals.).
 JW1138
 JW1138.The modeled gravity was interpolated from observed gravity values.
 JW1138
 JW1138;                    North         East    Units  Estimated Accuracy
 JW1138;SPC MD       -   194,324.3     187,787.2     MT  (+/- 3 meters HH1 GPS) 
 JW1138
 JW1138_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3229761340(NAD 83)
 JW1138
 JW1138                          SUPERSEDED SURVEY CONTROL
 JW1138
 JW1138.No superseded survey control is available for this station.
 JW1138
 JW1138_MARKER: DB = BENCH MARK DISK
 JW1138_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1138_STAMPING: 87 BC 1946 RESET 1960
 JW1138_MARK LOGO: USGS
 JW1138_PROJECTION: FLUSH
 JW1138_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1138+STABILITY: SURFACE MOTION
 JW1138
 JW1138  HISTORY     - Date     Condition        Report By
 JW1138  HISTORY     - 1960     MONUMENTED       USGS
 JW1138  HISTORY     - 1983     GOOD             NGS
 JW1138
 JW1138                          STATION DESCRIPTION
 JW1138
 JW1138'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1138'6.2 KM (3.9 MI) WEST FROM OAKLAND.
 JW1138'6.2 KM (3.9 MI) WEST ALONG STATE HIGHWAY 39 FROM THE JUNCTION OF U.S.
 JW1138'HIGHWAY 219 IN OAKLAND TO THE JUNCTION OF CRELLIN ROAD AND THE MARK ON
 JW1138'THE LEFT, NEAR THE EAST CORNER OF THE PROPERTY OF THE CRELLIN UNITED
 JW1138'BRETHREN CHURCH, 12.80 METERS (42.0 FT) SOUTHWEST OF THE CENTERLINE OF
 JW1138'THE HIGHWAY, 18.31 METERS (59.5 FT) EAST OF THE EAST CORNER OF THE
 JW1138'CHURCH, 18.28 METERS (60.0 FT) NORTHWEST OF THE CENTER OF THE ROAD.
 JW1138'THE MARK IS 1.21 M ABOVE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2754 ***********************************************************************
 JV2754  DESIGNATION -  877 WSSC
 JV2754  PID         -  JV2754
 JV2754  STATE/COUNTY-  MD/MONTGOMERY
 JV2754  COUNTRY     -  US
 JV2754  USGS QUAD   -  KENSINGTON (2016)
 JV2754
 JV2754                         *CURRENT SURVEY CONTROL
 JV2754  ______________________________________________________________________
 JV2754* NAD 83(1986) POSITION- 39 00 42.     (N) 077 01 01.     (W)   SCALED
 JV2754* NAVD 88 ORTHO HEIGHT -    94.51  (+/-2cm)      310.1   (feet) VERTCON3
 JV2754  ______________________________________________________________________
 JV2754  GEOID HEIGHT    -        -31.976 (meters)                     GEOID18
 JV2754  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2754
 JV2754.The horizontal coordinates were scaled from a map and have
 JV2754.an estimated accuracy of +/- 6 seconds.
 JV2754
 JV2754.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2754.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2754
 JV2754.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2754.GEOID18 height accuracy estimate available here.
 JV2754
 JV2754.The vertical order pertains to the NGVD 29 superseded value.
 JV2754
 JV2754.Click photographs - Photos may exist for this station.
 JV2754
 JV2754;                    North         East    Units  Estimated Accuracy
 JV2754;SPC MD       -   149,300.      398,530.      MT  (+/- 180 meters Scaled)
 JV2754
 JV2754_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ253200(NAD 83)
 JV2754
 JV2754                          SUPERSEDED SURVEY CONTROL
 JV2754
 JV2754  NGVD 29 (11/26/84)   94.726  (m)          310.78   (f) ADJUSTED    2 0
 JV2754
 JV2754.Superseded values are not recommended for survey control.
 JV2754
 JV2754.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2754.See file dsdata.pdf to determine how the superseded data were derived.
 JV2754
 JV2754_MARKER: Z = SEE DESCRIPTION
 JV2754_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2754_SP_SET: CULVERT
 JV2754_STAMPING: WSSC 877
 JV2754_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2754
 JV2754  HISTORY     - Date     Condition        Report By
 JV2754  HISTORY     - UNK      MONUMENTED       WSSC
 JV2754  HISTORY     - 1939     GOOD             WSSC
 JV2754
 JV2754                          STATION DESCRIPTION
 JV2754
 JV2754'DESCRIBED BY WASH SUBURB SAN COMM 1939
 JV2754'0.6 MI SW FROM FOUR CORNERS.
 JV2754'ON COLESVILLE ROAD, ABOUT 400 FEET SOUTH OF INDIAN SPRING DRIVE,
 JV2754'AT A CONCRETE CULVERT, AND IN THE NORTH END OF THE EAST HEADWALL.
 JV2754'LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2755 ***********************************************************************
 JV2755  DESIGNATION -  878 WSSC
 JV2755  PID         -  JV2755
 JV2755  STATE/COUNTY-  MD/MONTGOMERY
 JV2755  COUNTRY     -  US
 JV2755  USGS QUAD   -  KENSINGTON (2016)
 JV2755
 JV2755                         *CURRENT SURVEY CONTROL
 JV2755  ______________________________________________________________________
 JV2755* NAD 83(1986) POSITION- 39 00 45.     (N) 077 01 00.     (W)   SCALED
 JV2755* NAVD 88 ORTHO HEIGHT -    93.155 (meters)      305.63  (feet) ADJUSTED
 JV2755  ______________________________________________________________________
 JV2755  GEOID HEIGHT    -        -31.976 (meters)                     GEOID18
 JV2755  DYNAMIC HEIGHT  -         93.105 (meters)      305.46  (feet) COMP
 JV2755  MODELED GRAVITY -    980,086.2   (mgal)                       NAVD 88
 JV2755
 JV2755  VERT ORDER      -  SECOND    CLASS 0
 JV2755
 JV2755.The horizontal coordinates were scaled from a map and have
 JV2755.an estimated accuracy of +/- 6 seconds.
 JV2755
 JV2755.The orthometric height was determined by differential leveling and
 JV2755.adjusted by the NATIONAL GEODETIC SURVEY
 JV2755.in June 1991.
 JV2755
 JV2755.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2755.GEOID18 height accuracy estimate available here.
 JV2755
 JV2755.Click photographs - Photos may exist for this station.
 JV2755
 JV2755.The dynamic height is computed by dividing the NAVD 88
 JV2755.geopotential number by the normal gravity value computed on the
 JV2755.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2755.degrees latitude (g = 980.6199 gals.).
 JV2755
 JV2755.The modeled gravity was interpolated from observed gravity values.
 JV2755
 JV2755;                    North         East    Units  Estimated Accuracy
 JV2755;SPC MD       -   149,390.      398,560.      MT  (+/- 180 meters Scaled)
 JV2755
 JV2755_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ253200(NAD 83)
 JV2755
 JV2755                          SUPERSEDED SURVEY CONTROL
 JV2755
 JV2755  NGVD 29 (11/26/84)   93.371  (m)          306.33   (f) ADJUSTED    2 0
 JV2755
 JV2755.Superseded values are not recommended for survey control.
 JV2755
 JV2755.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2755.See file dsdata.pdf to determine how the superseded data were derived.
 JV2755
 JV2755_MARKER: Z = SEE DESCRIPTION
 JV2755_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2755_SP_SET: CULVERT
 JV2755_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2755
 JV2755  HISTORY     - Date     Condition        Report By
 JV2755  HISTORY     - UNK      MONUMENTED       WSSC
 JV2755  HISTORY     - 1952     GOOD             CGS
 JV2755
 JV2755                          STATION DESCRIPTION
 JV2755
 JV2755'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV2755'AT FOUR CORNERS.
 JV2755'AT FOUR CORNERS, MONTGOMERY COUNTY, ABOUT 100 FEET NORTH ALONG
 JV2755'COLESVILLE ROAD (U.S. HIGHWAY 29), FROM THE JUNCTION OF INDIAN
 JV2755'SPRINGS DRIVE, ON THE EAST SIDE OF THE HIGHWAY, AT P.E.P. CO.
 JV2755'POLE 7982, AND IN THE TOP OF THE NORTH END OF THE EAST HEADWALL
 JV2755'OF A CULVERT.  A WASHINGTON SUBURBAN SANITARY DISTRICT BRASS
 JV2755'SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2758 ***********************************************************************
 JV2758  DESIGNATION -  882 WSSC
 JV2758  PID         -  JV2758
 JV2758  STATE/COUNTY-  MD/MONTGOMERY
 JV2758  COUNTRY     -  US
 JV2758  USGS QUAD   -  KENSINGTON (2016)
 JV2758
 JV2758                         *CURRENT SURVEY CONTROL
 JV2758  ______________________________________________________________________
 JV2758* NAD 83(1986) POSITION- 39 01 08.     (N) 077 00 51.     (W)   SCALED
 JV2758* NAVD 88 ORTHO HEIGHT -   105.496 (meters)      346.11  (feet) ADJUSTED
 JV2758  ______________________________________________________________________
 JV2758  GEOID HEIGHT    -        -31.976 (meters)                     GEOID18
 JV2758  DYNAMIC HEIGHT  -        105.439 (meters)      345.93  (feet) COMP
 JV2758  MODELED GRAVITY -    980,086.4   (mgal)                       NAVD 88
 JV2758
 JV2758  VERT ORDER      -  SECOND    CLASS 0
 JV2758
 JV2758.The horizontal coordinates were scaled from a map and have
 JV2758.an estimated accuracy of +/- 6 seconds.
 JV2758
 JV2758.The orthometric height was determined by differential leveling and
 JV2758.adjusted by the NATIONAL GEODETIC SURVEY
 JV2758.in June 1991.
 JV2758
 JV2758.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2758.GEOID18 height accuracy estimate available here.
 JV2758
 JV2758.Click photographs - Photos may exist for this station.
 JV2758
 JV2758.The dynamic height is computed by dividing the NAVD 88
 JV2758.geopotential number by the normal gravity value computed on the
 JV2758.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2758.degrees latitude (g = 980.6199 gals.).
 JV2758
 JV2758.The modeled gravity was interpolated from observed gravity values.
 JV2758
 JV2758;                    North         East    Units  Estimated Accuracy
 JV2758;SPC MD       -   150,100.      398,770.      MT  (+/- 180 meters Scaled)
 JV2758
 JV2758_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ256208(NAD 83)
 JV2758
 JV2758                          SUPERSEDED SURVEY CONTROL
 JV2758
 JV2758  NGVD 29 (11/26/84)  105.710  (m)          346.82   (f) ADJUSTED    2 0
 JV2758
 JV2758.Superseded values are not recommended for survey control.
 JV2758
 JV2758.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2758.See file dsdata.pdf to determine how the superseded data were derived.
 JV2758
 JV2758_MARKER: Z = SEE DESCRIPTION
 JV2758_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2758_SP_SET: CULVERT
 JV2758_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2758
 JV2758  HISTORY     - Date     Condition        Report By
 JV2758  HISTORY     - UNK      MONUMENTED       WSSC
 JV2758  HISTORY     - 1951     GOOD             CGS
 JV2758  HISTORY     - 1958     GOOD             CGS
 JV2758
 JV2758                          STATION DESCRIPTION
 JV2758
 JV2758'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2758'AT FOUR CORNERS.
 JV2758'AT FOUR CORNERS, MONTGOMERY COUNTY, OPPOSITE INDIAN SPRINGS
 JV2758'GOLF COURSE, ON COLESVILLE ROAD, 30 YARDS NORTHEAST OF THE
 JV2758'JUNCTION OF LANARK WAY, NORTH OF P.E.P. CO. POLE 721364, SOUTH
 JV2758'OF P.E.P. CO. POLE 721363, AND IN THE NORTHEAST END OF THE
 JV2758'NORTHWEST HEADWALL OF A CULVERT.  A WASHINGTON SUBURBAN SANITARY
 JV2758'DISTRICT BRASS SCREW.
 JV2758
 JV2758                          STATION RECOVERY (1958)
 JV2758
 JV2758'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2758'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2762 ***********************************************************************
 JV2762  DESIGNATION -  887 WSSC
 JV2762  PID         -  JV2762
 JV2762  STATE/COUNTY-  MD/MONTGOMERY
 JV2762  COUNTRY     -  US
 JV2762  USGS QUAD   -  KENSINGTON (2016)
 JV2762
 JV2762                         *CURRENT SURVEY CONTROL
 JV2762  ______________________________________________________________________
 JV2762* NAD 83(1986) POSITION- 39 01 44.     (N) 077 00 27.     (W)   SCALED
 JV2762* NAVD 88 ORTHO HEIGHT -    71.086 (meters)      233.22  (feet) ADJUSTED
 JV2762  ______________________________________________________________________
 JV2762  GEOID HEIGHT    -        -31.981 (meters)                     GEOID18
 JV2762  DYNAMIC HEIGHT  -         71.048 (meters)      233.10  (feet) COMP
 JV2762  MODELED GRAVITY -    980,086.7   (mgal)                       NAVD 88
 JV2762
 JV2762  VERT ORDER      -  SECOND    CLASS 0
 JV2762
 JV2762.The horizontal coordinates were scaled from a map and have
 JV2762.an estimated accuracy of +/- 6 seconds.
 JV2762
 JV2762.The orthometric height was determined by differential leveling and
 JV2762.adjusted by the NATIONAL GEODETIC SURVEY
 JV2762.in June 1991.
 JV2762
 JV2762.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2762.GEOID18 height accuracy estimate available here.
 JV2762
 JV2762.Click photographs - Photos may exist for this station.
 JV2762
 JV2762.The dynamic height is computed by dividing the NAVD 88
 JV2762.geopotential number by the normal gravity value computed on the
 JV2762.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2762.degrees latitude (g = 980.6199 gals.).
 JV2762
 JV2762.The modeled gravity was interpolated from observed gravity values.
 JV2762
 JV2762;                    North         East    Units  Estimated Accuracy
 JV2762;SPC MD       -   151,210.      399,350.      MT  (+/- 180 meters Scaled)
 JV2762
 JV2762_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ262218(NAD 83)
 JV2762
 JV2762                          SUPERSEDED SURVEY CONTROL
 JV2762
 JV2762  NGVD 29 (11/26/84)   71.295  (m)          233.91   (f) ADJUSTED    2 0
 JV2762
 JV2762.Superseded values are not recommended for survey control.
 JV2762
 JV2762.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2762.See file dsdata.pdf to determine how the superseded data were derived.
 JV2762
 JV2762_MARKER: B = BOLT
 JV2762_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2762_SP_SET: CULVERT
 JV2762_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2762
 JV2762  HISTORY     - Date     Condition        Report By
 JV2762  HISTORY     - UNK      MONUMENTED       WSSC
 JV2762  HISTORY     - 1952     GOOD             CGS
 JV2762
 JV2762                          STATION DESCRIPTION
 JV2762
 JV2762'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV2762'0.2 MI SW FROM BURNT MILLS.
 JV2762'ABOUT 0.1 MILE SOUTHWEST ALONG COLESVILLE ROAD (U.S. HIGHWAY
 JV2762'29) FROM THE BRIDGE AT BURNT MILLS, MONTGOMERY COUNTY, AT A
 JV2762'CULVERT, AND IN THE NORTHEAST END OF THE SOUTHEAST HEAD WALL.
 JV2762'A BRASS BOLT WITH AN X IN THE TOP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2788 ***********************************************************************
 JV2788  DESIGNATION -  9
 JV2788  PID         -  JV2788
 JV2788  STATE/COUNTY-  MD/MONTGOMERY
 JV2788  COUNTRY     -  US
 JV2788  USGS QUAD   -  KENSINGTON (2016)
 JV2788
 JV2788                         *CURRENT SURVEY CONTROL
 JV2788  ______________________________________________________________________
 JV2788* NAD 83(1986) POSITION- 39 00 28.     (N) 077 02 23.     (W)   SCALED
 JV2788* NAVD 88 ORTHO HEIGHT -   109.192 (meters)      358.24  (feet) ADJUSTED
 JV2788  ______________________________________________________________________
 JV2788  GEOID HEIGHT    -        -31.943 (meters)                     GEOID18
 JV2788  DYNAMIC HEIGHT  -        109.133 (meters)      358.05  (feet) COMP
 JV2788  MODELED GRAVITY -    980,085.8   (mgal)                       NAVD 88
 JV2788
 JV2788  VERT ORDER      -  SECOND    CLASS 0
 JV2788
 JV2788.The horizontal coordinates were scaled from a map and have
 JV2788.an estimated accuracy of +/- 6 seconds.
 JV2788
 JV2788.The orthometric height was determined by differential leveling and
 JV2788.adjusted by the NATIONAL GEODETIC SURVEY
 JV2788.in June 1991.
 JV2788
 JV2788.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2788.GEOID18 height accuracy estimate available here.
 JV2788
 JV2788.Click photographs - Photos may exist for this station.
 JV2788
 JV2788.The dynamic height is computed by dividing the NAVD 88
 JV2788.geopotential number by the normal gravity value computed on the
 JV2788.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2788.degrees latitude (g = 980.6199 gals.).
 JV2788
 JV2788.The modeled gravity was interpolated from observed gravity values.
 JV2788
 JV2788;                    North         East    Units  Estimated Accuracy
 JV2788;SPC MD       -   148,870.      396,560.      MT  (+/- 180 meters Scaled)
 JV2788
 JV2788_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ233196(NAD 83)
 JV2788
 JV2788                          SUPERSEDED SURVEY CONTROL
 JV2788
 JV2788  NGVD 29 (11/26/84)  109.407  (m)          358.95   (f) ADJUSTED    2 0
 JV2788
 JV2788.Superseded values are not recommended for survey control.
 JV2788
 JV2788.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2788.See file dsdata.pdf to determine how the superseded data were derived.
 JV2788
 JV2788_MARKER: Q = CHISELED SQUARE
 JV2788_SETTING: 0 = UNSPECIFIED SETTING
 JV2788_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2788
 JV2788  HISTORY     - Date     Condition        Report By
 JV2788  HISTORY     - UNK      MONUMENTED       NONE
 JV2788  HISTORY     - 1951     GOOD             CGS
 JV2788  HISTORY     - 1958     GOOD             CGS
 JV2788
 JV2788                          STATION DESCRIPTION
 JV2788
 JV2788'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2788'AT SILVER SPRING.
 JV2788'AT SILVER SPRING, MONTGOMERY COUNTY, AT THE Y-JUNCTION OF
 JV2788'GEORGIA AVENUE (STATE HIGHWAY 97) AND COLUMBIA BOULEVARD, AND
 JV2788'NEAR THE EAST CORNER OF THE CONCRETE TRIANGLE.  AN OUTLINED
 JV2788'SQUARD BESIDE A YELLOW PAINTED 9.
 JV2788
 JV2788                          STATION RECOVERY (1958)
 JV2788
 JV2788'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2788'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7827 ***********************************************************************
 DR7827  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7827  DESIGNATION -  9
 DR7827  PID         -  DR7827
 DR7827  STATE/COUNTY-  MD/QUEEN ANNES
 DR7827  COUNTRY     -  US
 DR7827  USGS QUAD   -  KENT ISLAND (2016)
 DR7827
 DR7827                         *CURRENT SURVEY CONTROL
 DR7827  ______________________________________________________________________
 DR7827* NAD 83(2011) POSITION- 38 55 24.46329(N) 076 15 31.78539(W)   ADJUSTED
 DR7827* NAD 83(2011) ELLIP HT-   -33.038 (meters)        (02/02/22)   ADJUSTED
 DR7827* NAD 83(2011) EPOCH   -  2010.00
 DR7827* NAVD 88 ORTHO HEIGHT -     0.82  (meters)        2.7   (feet) GPS OBS
 DR7827  ______________________________________________________________________
 DR7827  GEOID HEIGHT    -        -33.859 (meters)                     GEOID18
 DR7827  NAD 83(2011) X  -  1,180,232.953 (meters)                     COMP
 DR7827  NAD 83(2011) Y  - -4,826,435.326 (meters)                     COMP
 DR7827  NAD 83(2011) Z  -  3,985,689.408 (meters)                     COMP
 DR7827  LAPLACE CORR    -         -4.53  (seconds)                    DEFLEC18
 DR7827
 DR7827  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7827  Standards:
 DR7827         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7827            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7827  -------------------------------------------------------------------
 DR7827  NETWORK    0.73   1.67           0.32   0.27   0.85     -0.14017056
 DR7827  -------------------------------------------------------------------
 DR7827  Click here for local accuracies and other accuracy information.
 DR7827
 DR7827.The horizontal coordinates were established by GPS observations
 DR7827.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 DR7827
 DR7827.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7827.been affixed to the stable North American tectonic plate. See 
 DR7827.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR7827
 DR7827.The horizontal coordinates are valid at the epoch date displayed above
 DR7827.which is a decimal equivalence of Year/Month/Day.
 DR7827
 DR7827.The orthometric height was determined by GPS observations and a
 DR7827.high-resolution geoid model using precise GPS observation and
 DR7827.processing techniques.
 DR7827
 DR7827.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7827.GEOID18 height accuracy estimate available here.
 DR7827
 DR7827.Click photographs - Photos may exist for this station.
 DR7827
 DR7827.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR7827
 DR7827.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7827
 DR7827.The ellipsoidal height was determined by GPS observations
 DR7827.and is referenced to NAD 83.
 DR7827
 DR7827. The following values were computed from the NAD 83(2011) position.
 DR7827
 DR7827;                    North         East     Units Scale Factor Converg.
 DR7827;SPC MD       -   139,770.686   464,270.161   MT  0.99995019   +0 27 54.7
 DR7827;SPC MD       -   458,564.33  1,523,193.02   sFT  0.99995019   +0 27 54.7
 DR7827;UTM  18      - 4,309,036.364   390,876.558   MT  0.99974663   -0 47 27.5
 DR7827
 DR7827!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7827!SPC MD       -   1.00000518  x   0.99995019  =   0.99995537
 DR7827!UTM  18      -   1.00000518  x   0.99974663  =   0.99975181
 DR7827
 DR7827_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9087609036(NAD 83)
 DR7827
 DR7827                          SUPERSEDED SURVEY CONTROL
 DR7827
 DR7827.No superseded survey control is available for this station.
 DR7827
 DR7827_MARKER: DD = SURVEY DISK
 DR7827_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR7827_STAMPING: 9
 DR7827_MARK LOGO: MD-035
 DR7827_PROJECTION: RECESSED 9 CENTIMETERS
 DR7827_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR7827+STABILITY: SURFACE MOTION
 DR7827_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR7827+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 DR7827
 DR7827  HISTORY     - Date     Condition        Report By
 DR7827  HISTORY     - UNK      MONUMENTED       MD-035
 DR7827  HISTORY     - 20210309 GOOD             MDSHA
 DR7827
 DR7827                          STATION DESCRIPTION
 DR7827
 DR7827'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR7827'THE MARK IS LOCATED ABOUT 3.6 MI (5.8 KM) SOUTH-SOUTHWEST OF
 DR7827'GRASONVILLE 4 MI (6.4 KM) SOUTH-SOUTHEAST OF CHESTER AND 5.2 MI (8.4
 DR7827'KM) NORTH-NORTHEAST OF ROMANCOKE.
 DR7827'
 DR7827'TO REACH FROM THE JUNCTION OF US 50 AND MD ROUTE 552 IN CHESTER, MD,
 DR7827'GO SOUTH ON MD ROUTE 552 (DOMINION RD) FOR 1.8 MI (2.9 KM) TO A
 DR7827'T-INTERSECTION.  TURN LEFT AND GO SOUTHEAST ON PARSON ISLAND ROAD FOR
 DR7827'0.7 MI (1.1 KM) TO ST MARYS ROAD.  CONTINUE SOUTH ON ST MARYS ROAD FOR
 DR7827'0.1 MI (0.2 KM) TO A Y-FORK.  BEAR LEFT AND GO SOUTH ON QUEEN ANNE
 DR7827'DRIVE FOR 1.0 MI (1.6 KM) TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO
 DR7827'SOUTH ON CHESTER ROAD FOR 0.4 MI (0.6 KM) TO A SIDE ROAD LEFT (CALVERT
 DR7827'RD) AND THE MARK ON THE LEFT IN THE NORTH ANGLE OF THE INTERSECTION.
 DR7827'
 DR7827'THE MARK 185.5 FT (56.5 M) WEST-SOUTHWEST OF VERIZON TELEPHONE
 DR7827'PEDESTAL NUMBERED 24, 122.6 FT (37.4 M) NORTH OF A VERIZON UTILITY
 DR7827'POLE NUMBERED 62, 87.5 FT (26.7 M) EAST OF VERIZON FIBER OPTIC
 DR7827'PEDESTAL NUMBERED 2, 46.5 FT (14.2 M) NORTHEAST OF THE CENTERLINE OF
 DR7827'CHESTER ROAD, 34.3 FT (10.5 M) NORTHWEST OF THE CENTERLINE OF CALVERT
 DR7827'ROAD AND SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3578 ***********************************************************************
 JU3578  DESIGNATION -  9 2
 JU3578  PID         -  JU3578
 JU3578  STATE/COUNTY-  MD/CECIL
 JU3578  COUNTRY     -  US
 JU3578  USGS QUAD   -  EARLEVILLE (2016)
 JU3578
 JU3578                         *CURRENT SURVEY CONTROL
 JU3578  ______________________________________________________________________
 JU3578* NAD 83(1991) POSITION- 39 27 23.32705(N) 075 58 20.25814(W)   ADJUSTED
 JU3578* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3578  ______________________________________________________________________
 JU3578  GEOID HEIGHT    -        -33.364 (meters)                     GEOID18
 JU3578  LAPLACE CORR    -         -0.67  (seconds)                    DEFLEC18
 JU3578  HORZ ORDER      -  THIRD
 JU3578
 JU3578.The horizontal coordinates were established by classical geodetic methods
 JU3578.and adjusted by the National Geodetic Survey in January 1992.
 JU3578
 JU3578.The orthometric height was scaled from a topographic map.
 JU3578
 JU3578.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3578.GEOID18 height accuracy estimate available here.
 JU3578
 JU3578.Click photographs - Photos may exist for this station.
 JU3578
 JU3578.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3578
 JU3578. The following values were computed from the NAD 83(1991) position.
 JU3578
 JU3578;                    North         East     Units Scale Factor Converg.
 JU3578;SPC MD       -   199,180.945   488,449.848   MT  1.00000114   +0 38 42.1
 JU3578;SPC MD       -   653,479.48  1,602,522.54   sFT  1.00000114   +0 38 42.1
 JU3578;UTM  18      - 4,367,885.688   416,350.235   MT  0.99968615   -0 37 04.5
 JU3578
 JU3578!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3578!SPC MD       -   1.00000527  x   1.00000114  =   1.00000641
 JU3578!UTM  18      -   1.00000527  x   0.99968615  =   0.99969142
 JU3578
 JU3578:                Primary Azimuth Mark                     Grid Az
 JU3578:SPC MD       -  10                                       199 20 44.7
 JU3578:UTM  18      -  10                                       200 36 31.3
 JU3578
 JU3578_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1635067885(NAD 83)
 JU3578
 JU3578|---------------------------------------------------------------------|
 JU3578| PID    Reference Object                     Distance      Geod. Az  |
 JU3578|                                                           dddmmss.s |
 JU3578| JU3561 10                                  APPROX. 1.0 KM 1995926.8 |
 JU3578|---------------------------------------------------------------------|
 JU3578
 JU3578                          SUPERSEDED SURVEY CONTROL
 JU3578
 JU3578  NAD 83(1986)-  39 27 23.31939(N)    075 58 20.26447(W) AD(       ) 3
 JU3578  NAD 27      -  39 27 22.92300(N)    075 58 21.47500(W) AD(       ) 3
 JU3578
 JU3578.Superseded values are not recommended for survey control.
 JU3578
 JU3578.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3578.See file dsdata.pdf to determine how the superseded data were derived.
 JU3578
 JU3578_MARKER: DD = SURVEY DISK
 JU3578_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3578_STAMPING: 9-2
 JU3578_MARK LOGO: USACE
 JU3578_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3578+STABILITY: SURFACE MOTION
 JU3578
 JU3578  HISTORY     - Date     Condition        Report By
 JU3578  HISTORY     - 1937     MONUMENTED       USACE
 JU3578  HISTORY     - 1938     GOOD             CGS
 JU3578
 JU3578                          STATION DESCRIPTION
 JU3578
 JU3578'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3578'LOCATED ON THE S SIDE OF ELK RIVER ON A ROUNDING POINT ABOUT
 JU3578'MIDWAY BETWEEN ARNOLD POINT AND REYBOLDS WHARF, BOTH OF WHICH ARE
 JU3578'VISIBLE FROM THE STATION.  THE STATION IS 2.0 METERS INSHORE FROM
 JU3578'THE HIGH-WATER LINE.  THE STATION IS STANDARD U.S.E.D. DISK SET
 JU3578'ATOP 6-INCH SQUARE CONCRETE POST.
 JU3578
 JU3578                          STATION RECOVERY (1938)
 JU3578
 JU3578'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JU3578'STATION WAS RECOVERED IN GOOD CONDITION.  THE
 JU3578'MARK IS STAMPED 9-2.  THE PRESENT DESCRIPTION IS ADEQUATE.  NO
 JU3578'REFERENCE MARKS WERE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2253 ***********************************************************************
 HU2253  DESIGNATION -  9 KEM
 HU2253  PID         -  HU2253
 HU2253  STATE/COUNTY-  MD/WICOMICO
 HU2253  COUNTRY     -  US
 HU2253  USGS QUAD   -  WETIPQUIN (2016)
 HU2253
 HU2253                         *CURRENT SURVEY CONTROL
 HU2253  ______________________________________________________________________
 HU2253* NAD 83(1986) POSITION- 38 20 13.9    (N) 075 50 50.5    (W)   HD_HELD2
 HU2253* NAVD 88 ORTHO HEIGHT -     4.049 (meters)       13.28  (feet) ADJUSTED
 HU2253  ______________________________________________________________________
 HU2253  GEOID HEIGHT    -        -35.683 (meters)                     GEOID18
 HU2253  DYNAMIC HEIGHT  -          4.046 (meters)       13.27  (feet) COMP
 HU2253  MODELED GRAVITY -    979,999.8   (mgal)                       NAVD 88
 HU2253
 HU2253  VERT ORDER      -  SECOND    CLASS I
 HU2253
 HU2253.The horizontal coordinates were established by autonomous hand held GPS
 HU2253.observations and have an estimated accuracy of +/- 10 meters.
 HU2253
 HU2253.The orthometric height was determined by differential leveling and
 HU2253.adjusted by the NATIONAL GEODETIC SURVEY
 HU2253.in June 1991.
 HU2253
 HU2253.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2253.GEOID18 height accuracy estimate available here.
 HU2253
 HU2253.Click photographs - Photos may exist for this station.
 HU2253
 HU2253.The dynamic height is computed by dividing the NAVD 88
 HU2253.geopotential number by the normal gravity value computed on the
 HU2253.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2253.degrees latitude (g = 980.6199 gals.).
 HU2253
 HU2253.The modeled gravity was interpolated from observed gravity values.
 HU2253
 HU2253;                    North         East    Units  Estimated Accuracy
 HU2253;SPC MD       -    75,068.      500,770.      MT  (+/- 10 meters HH2 GPS)
 HU2253
 HU2253_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2594543568(NAD 83)
 HU2253
 HU2253                          SUPERSEDED SURVEY CONTROL
 HU2253
 HU2253  NGVD 29 (06/12/91)    4.303  (m)           14.12   (f) ADJUSTED    2 1
 HU2253
 HU2253.Superseded values are not recommended for survey control.
 HU2253
 HU2253.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2253.See file dsdata.pdf to determine how the superseded data were derived.
 HU2253
 HU2253_MARKER: DB = BENCH MARK DISK
 HU2253_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2253_STAMPING: 9 KEM 1977
 HU2253_MARK LOGO: USGS
 HU2253_PROJECTION: FLUSH
 HU2253_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2253_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2253+STABILITY: SURFACE MOTION
 HU2253_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2253+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2019
 HU2253
 HU2253  HISTORY     - Date     Condition        Report By
 HU2253  HISTORY     - 1977     MONUMENTED       USGS
 HU2253  HISTORY     - 19900301 GOOD             NGS
 HU2253  HISTORY     - 20190519 GOOD             PROFLN
 HU2253
 HU2253                          STATION DESCRIPTION
 HU2253
 HU2253'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2253'8.4 KM (5.22 MI) NORTHEASTERLY ALONG STATE HIGHWAY 349 FROM ITS
 HU2253'JUNCTION WITH TEXAS ROAD IN BIVALVE, THENCE 3.5 KM (2.17 MI) WESTERLY
 HU2253'ALONG WETIPQUIN ROAD, 20.0 M (65.62 FT) SOUTHEAST OF THE CENTER OF
 HU2253'ROYAL OAK ROAD, 15.3 M (50.20 FT) NORTHEAST OF THE CENTER OF
 HU2253'WETIPQUIN ROAD, 8.9 M (29.20 FT) EAST OF TELEPHONE PEDESTAL NUMBER
 HU2253'56, 0.6 M (1.97 FT) WEST OF UTILITY POLE NUMBER Y242T, LEVEL WITH THE
 HU2253'ROADS, AND IN A CONCRTE MONUMENT THAT IS FLUSH WITH THE GROUND
 HU2253'SURFACE.
 HU2253
 HU2253                          STATION RECOVERY (2019)
 HU2253
 HU2253'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2253'RECOVERED AS DESCRIBED IN THE MIDDLE OF AN OPEN AREA.  THE POLE IS
 HU2253'ALSO NUMBERED 71 59 168 BESIDES Y242T.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1187 ***********************************************************************
 JV1187  DESIGNATION -  9 PRR
 JV1187  PID         -  JV1187
 JV1187  STATE/COUNTY-  MD/BALTIMORE
 JV1187  COUNTRY     -  US
 JV1187  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1187
 JV1187                         *CURRENT SURVEY CONTROL
 JV1187  ______________________________________________________________________
 JV1187* NAD 83(1986) POSITION- 39 23 21.     (N) 076 38 29.     (W)   SCALED
 JV1187* NAVD 88 ORTHO HEIGHT -    69.779 (meters)      228.93  (feet) ADJUSTED
 JV1187  ______________________________________________________________________
 JV1187  GEOID HEIGHT    -        -32.502 (meters)                     GEOID18
 JV1187  DYNAMIC HEIGHT  -         69.742 (meters)      228.81  (feet) COMP
 JV1187  MODELED GRAVITY -    980,098.5   (mgal)                       NAVD 88
 JV1187
 JV1187  VERT ORDER      -  SECOND    CLASS 0
 JV1187
 JV1187.The horizontal coordinates were scaled from a map and have
 JV1187.an estimated accuracy of +/- 6 seconds.
 JV1187
 JV1187.The orthometric height was determined by differential leveling and
 JV1187.adjusted by the NATIONAL GEODETIC SURVEY
 JV1187.in June 1991.
 JV1187
 JV1187.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1187.GEOID18 height accuracy estimate available here.
 JV1187
 JV1187.Click photographs - Photos may exist for this station.
 JV1187
 JV1187.The dynamic height is computed by dividing the NAVD 88
 JV1187.geopotential number by the normal gravity value computed on the
 JV1187.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1187.degrees latitude (g = 980.6199 gals.).
 JV1187
 JV1187.The modeled gravity was interpolated from observed gravity values.
 JV1187
 JV1187;                    North         East    Units  Estimated Accuracy
 JV1187;SPC MD       -   191,270.      430,890.      MT  (+/- 180 meters Scaled)
 JV1187
 JV1187_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ586612(NAD 83)
 JV1187
 JV1187                          SUPERSEDED SURVEY CONTROL
 JV1187
 JV1187  NGVD 29 (11/26/84)   70.006  (m)          229.68   (f) ADJUSTED    2 0
 JV1187
 JV1187.Superseded values are not recommended for survey control.
 JV1187
 JV1187.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1187.See file dsdata.pdf to determine how the superseded data were derived.
 JV1187
 JV1187_MARKER: B = BOLT
 JV1187_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1187_SP_SET: CULVERT
 JV1187_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1187
 JV1187  HISTORY     - Date     Condition        Report By
 JV1187  HISTORY     - UNK      MONUMENTED       PRR
 JV1187  HISTORY     - 1935     GOOD             CGS
 JV1187  HISTORY     - 20110315 GOOD             JARICE
 JV1187
 JV1187                          STATION DESCRIPTION
 JV1187
 JV1187'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1187'AT LAKE.
 JV1187'AT LAKE, BALTIMORE COUNTY, ABOUT 600 FEET SOUTH OF THE PENNSYLVANIA
 JV1187'RAILROAD STATION, IN THE TOP OF THE WEST END OF A CULVERT, AND
 JV1187'50 FEET WEST OF THE CENTERLINE OF THE WEST TRACK.  A COPPER BOLT.
 JV1187
 JV1187                          STATION RECOVERY (2011)
 JV1187
 JV1187'RECOVERY NOTE BY J A RICE INC 2011 (SMD)
 JV1187'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4042 ***********************************************************************
 AE4042  DESIGNATION -  9 SKS
 AE4042  PID         -  AE4042
 AE4042  STATE/COUNTY-  MD/BALTIMORE
 AE4042  COUNTRY     -  US
 AE4042  USGS QUAD   -  MIDDLE RIVER (2016)
 AE4042
 AE4042                         *CURRENT SURVEY CONTROL
 AE4042  ______________________________________________________________________
 AE4042* NAD 83(1986) POSITION- 39 22 18.     (N) 076 24 38.     (W)   SCALED
 AE4042* NAVD 88 ORTHO HEIGHT -     3.515 (meters)       11.53  (feet) ADJUSTED
 AE4042  ______________________________________________________________________
 AE4042  GEOID HEIGHT    -        -33.007 (meters)                     GEOID18
 AE4042  DYNAMIC HEIGHT  -          3.513 (meters)       11.53  (feet) COMP
 AE4042  MODELED GRAVITY -    980,106.1   (mgal)                       NAVD 88
 AE4042
 AE4042  VERT ORDER      -  THIRD
 AE4042
 AE4042.The horizontal coordinates were scaled from a map and have
 AE4042.an estimated accuracy of +/- 6 seconds.
 AE4042
 AE4042.The orthometric height was determined by differential leveling and
 AE4042.adjusted by the NATIONAL GEODETIC SURVEY
 AE4042.in February 1998.
 AE4042
 AE4042.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4042.GEOID18 height accuracy estimate available here.
 AE4042
 AE4042.Click photographs - Photos may exist for this station.
 AE4042
 AE4042.The dynamic height is computed by dividing the NAVD 88
 AE4042.geopotential number by the normal gravity value computed on the
 AE4042.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4042.degrees latitude (g = 980.6199 gals.).
 AE4042
 AE4042.The modeled gravity was interpolated from observed gravity values.
 AE4042
 AE4042;                    North         East    Units  Estimated Accuracy
 AE4042;SPC MD       -   189,430.      450,790.      MT  (+/- 180 meters Scaled)
 AE4042
 AE4042_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ784589(NAD 83)
 AE4042
 AE4042                          SUPERSEDED SURVEY CONTROL
 AE4042
 AE4042.No superseded survey control is available for this station.
 AE4042
 AE4042_MARKER: DB = BENCH MARK DISK
 AE4042_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 AE4042_SP_SET: BRIDGE ABUTMENT
 AE4042_STAMPING: 9 SKS 1966
 AE4042_MARK LOGO: USGS
 AE4042_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE4042_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AE4042
 AE4042  HISTORY     - Date     Condition        Report By
 AE4042  HISTORY     - 1966     MONUMENTED       USGS
 AE4042  HISTORY     - 19950223 GOOD             MCCRON
 AE4042
 AE4042                          STATION DESCRIPTION
 AE4042
 AE4042'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4042'STATION IS LOCATED ABOUT 1.4 MI (2.3 KM) SOUTHEAST OF WHITE MARSH. TO
 AE4042'REACH STATION FROM THE WHITE MARSH BLVD OVERPASS (RT 43) OVER U.S.  RT
 AE4042'40 (PULASKI HIGHWAY) GO NORTHEAST ON U.S.  RT 40 FOR 0.5 MI (0.8 KM)
 AE4042'TO EBENEZER ROAD.  TURN RIGHT ON EBENEZER ROAD AND GO SOUTHEAST FOR
 AE4042'1.15 MI (1.85 KM) TO STATION ON THE LEFT. STATION MARK IS SET IN TOP
 AE4042'OF A CONCRETE HEADWALL.  IT IS 32.5 FT (9.9 M) NORTHWEST FROM POWER
 AE4042'POLE (GUY POLE) NO.  125043, 48.3 FT (14.7 M) EAST OF POWER POLE NO.
 AE4042'107, 10.5 FT (3.2 M) NORTHEAST OF THE CENTERLINE OF EBENEZER ROAD,
 AE4042'44.0 FT (13.4 M) EAST OF THE EASTERNMOST CORNER OF A WHITE BOARD
 AE4042'FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8055 ***********************************************************************
 HV8055  DESIGNATION -  90 D CO
 HV8055  PID         -  HV8055
 HV8055  STATE/COUNTY-  MD/DORCHESTER
 HV8055  COUNTRY     -  US
 HV8055  USGS QUAD   -  GOLDEN HILL (2016)
 HV8055
 HV8055                         *CURRENT SURVEY CONTROL
 HV8055  ______________________________________________________________________
 HV8055* NAD 83(1986) POSITION- 38 23 18.4    (N) 076 12 02.9    (W)   HD_HELD2
 HV8055* NAVD 88 ORTHO HEIGHT -     0.69  (meters)        2.3   (feet) RESET
 HV8055  ______________________________________________________________________
 HV8055  GEOID HEIGHT    -        -35.072 (meters)                     GEOID18
 HV8055  VERT ORDER      -  THIRD
 HV8055
 HV8055.The horizontal coordinates were established by autonomous hand held GPS
 HV8055.observations and have an estimated accuracy of +/- 10 meters.
 HV8055
 HV8055.The orthometric height was computed from unverified reset data.
 HV8055
 HV8055.No vertical observational check was made to the station.
 HV8055
 HV8055.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8055.GEOID18 height accuracy estimate available here.
 HV8055
 HV8055.Click photographs - Photos may exist for this station.
 HV8055
 HV8055;                    North         East    Units  Estimated Accuracy
 HV8055;SPC MD       -    80,426.      469,821.      MT  (+/- 10 meters HH2 GPS)
 HV8055
 HV8055_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9512949597(NAD 83)
 HV8055
 HV8055                          SUPERSEDED SURVEY CONTROL
 HV8055
 HV8055  NGVD 29 (11/26/84)    0.906  (m)            2.97   (f) ADJUSTED       
 HV8055
 HV8055.Superseded values are not recommended for survey control.
 HV8055
 HV8055.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8055.See file dsdata.pdf to determine how the superseded data were derived.
 HV8055
 HV8055_MARKER: DD = SURVEY DISK
 HV8055_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8055_STAMPING: BM 90 1978
 HV8055_MARK LOGO: MD-019
 HV8055_PROJECTION: RECESSED 20 CENTIMETERS
 HV8055_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8055+STABILITY: SURFACE MOTION
 HV8055_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8055+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2014
 HV8055
 HV8055  HISTORY     - Date     Condition        Report By
 HV8055  HISTORY     - 1978     MONUMENTED       MD-019
 HV8055  HISTORY     - 20140320 GOOD             ARCSHE
 HV8055
 HV8055                          STATION DESCRIPTION
 HV8055
 HV8055'DESCRIBED BY DORCHESTER COUNTY MARYLAND 1978
 HV8055'9.95 MI SSW FROM CHURCH CREEK.
 HV8055'LOCATED 16.0 KM (9.95 MI) SOUTH ALONG STATE HIGHWAY 335 FROM THE POST
 HV8055'OFFICE IN CHURCH CREEK, THENCE NORTHWEST ALONG STATE HIGHWAY 335 FOR
 HV8055'0.5 KM (0.3 MI) TO THE MARK ON THE LEFT, 20.9 METERS (68.5 FT) WEST
 HV8055'OF A POWERLINE POLE NUMBERED 513-4, 7.9 METERS (25.8 FT) SOUTHWEST
 HV8055'OF THE CENTER OF STATE HIGHWAY 335, 2.4 METERS (8.0 FT) NORTHWEST OF
 HV8055'A TELEPHONE POLE NUMBERED 16 AND 0.3 METERS (1.0 FT) NORTHEAST OF THE
 HV8055'EDGE OF A FIELD.
 HV8055
 HV8055                          STATION RECOVERY (2014)
 HV8055
 HV8055'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV8055'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1706 ***********************************************************************
 JV1706  DESIGNATION -  913 BALTO
 JV1706  PID         -  JV1706
 JV1706  STATE/COUNTY-  MD/CARROLL
 JV1706  COUNTRY     -  US
 JV1706  USGS QUAD   -  HAMPSTEAD (2016)
 JV1706
 JV1706                         *CURRENT SURVEY CONTROL
 JV1706  ______________________________________________________________________
 JV1706* NAD 83(1986) POSITION- 39 36 15.0    (N) 076 50 58.1    (W)   HD_HELD2
 JV1706* NAVD 88 ORTHO HEIGHT -   278.288 (meters)      913.02  (feet) ADJUSTED
 JV1706  ______________________________________________________________________
 JV1706  GEOID HEIGHT    -        -32.157 (meters)                     GEOID18
 JV1706  DYNAMIC HEIGHT  -        278.145 (meters)      912.55  (feet) COMP
 JV1706  MODELED GRAVITY -    980,105.0   (mgal)                       NAVD 88
 JV1706
 JV1706  VERT ORDER      -  SECOND    CLASS 0
 JV1706
 JV1706.The horizontal coordinates were established by autonomous hand held GPS
 JV1706.observations and have an estimated accuracy of +/- 10 meters.
 JV1706
 JV1706.The orthometric height was determined by differential leveling and
 JV1706.adjusted by the NATIONAL GEODETIC SURVEY
 JV1706.in August 1994.
 JV1706
 JV1706.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1706.GEOID18 height accuracy estimate available here.
 JV1706
 JV1706.Click photographs - Photos may exist for this station.
 JV1706
 JV1706.The dynamic height is computed by dividing the NAVD 88
 JV1706.geopotential number by the normal gravity value computed on the
 JV1706.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1706.degrees latitude (g = 980.6199 gals.).
 JV1706
 JV1706.The modeled gravity was interpolated from observed gravity values.
 JV1706
 JV1706;                    North         East    Units  Estimated Accuracy
 JV1706;SPC MD       -   215,091.      412,928.      MT  (+/- 10 meters HH2 GPS)
 JV1706
 JV1706_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4121685459(NAD 83)
 JV1706
 JV1706                          SUPERSEDED SURVEY CONTROL
 JV1706
 JV1706  NAVD 88 (06/15/91)  278.293  (m)          913.03   (f) SUPERSEDED  2 0
 JV1706  NGVD 29 (11/26/84)  278.506  (m)          913.73   (f) ADJUSTED    2 0
 JV1706
 JV1706.Superseded values are not recommended for survey control.
 JV1706
 JV1706.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1706.See file dsdata.pdf to determine how the superseded data were derived.
 JV1706
 JV1706_MARKER: DB = BENCH MARK DISK
 JV1706_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV1706_SP_SET: FOUNDATION WALL
 JV1706_STAMPING: 913 BALTO
 JV1706_MARK LOGO: USGS
 JV1706_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1706+STABILITY: SURFACE MOTION
 JV1706_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1706+SATELLITE: SATELLITE OBSERVATIONS - January 17, 2021
 JV1706
 JV1706  HISTORY     - Date     Condition        Report By
 JV1706  HISTORY     - 1902     MONUMENTED       USGS
 JV1706  HISTORY     - 1942     GOOD             CGS
 JV1706  HISTORY     - 19900619 GOOD             NGS
 JV1706  HISTORY     - 19970626 GOOD             MD-005
 JV1706  HISTORY     - 20070605 GOOD             MD-005
 JV1706  HISTORY     - 20080201 GOOD             MDSHA
 JV1706  HISTORY     - 20140531 GOOD             RODCON
 JV1706  HISTORY     - 20200309 POOR             WTBALL
 JV1706  HISTORY     - 20210117 POOR             WTBALL
 JV1706
 JV1706                          STATION DESCRIPTION
 JV1706
 JV1706'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1706'AT HAMPSTEAD.
 JV1706'AT HAMPSTEAD, CARROLL COUNTY, AT THE H.W. SNYDER RESIDENCE, JUST
 JV1706'BEHIND THE SHELL SERVICE STATION OWNED BY SNYDER, AND IN THE
 JV1706'TOP OF THE SOUTHWEST CORNER OF THE FOUNDATION WALL.  A UNITED
 JV1706'STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 913 BALTO.
 JV1706
 JV1706                          STATION RECOVERY (1990)
 JV1706
 JV1706'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV1706'RECOVERED IN GOOD CONDITION.
 JV1706
 JV1706                          STATION RECOVERY (1997)
 JV1706
 JV1706'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV1706'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  A
 JV1706'COMPLETE DESCRIPTION FOLLOWS.  STATION IS LOCATED IN THE TOWN OF
 JV1706'HAMPSTEAD, CARROLL COUNTY.  TO REACH THE STATION FROM THE INTERSECTION
 JV1706'OF ROUTE 30 (MAIN STREET) AND ROUTE 833 (BLACK ROCK ROAD) IN THE TOWN
 JV1706'OF HAMPSTEAD, GO SOUTH ON ROUTE 30 FOR 0.2 MILES (0.3 KM) TO THE
 JV1706'INTERSECTION WITH EAST MOTT STREET AND THE STATION ON THE LEFT.  THE
 JV1706'MARK IS A STANDARD USGS BENCH MARK DISK SET VERTICALLY IN THE
 JV1706'SOUTHWEST TOP CORNER OF THE FOUNDATION WALL OF 1101 SOUTH MAIN STREET,
 JV1706'THE RESIDENCE OF NEAL OWINGS.
 JV1706
 JV1706                          STATION RECOVERY (2007)
 JV1706
 JV1706'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 JV1706'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2007 (PAS).
 JV1706'ADDITIONAL INFORMATION FOR THE STATION FOLLOWS - THE STATION IS IN THE
 JV1706'SOUTHWEST FACE (SIDE FACING STREET) OF THE FOUNDATION WALL AND SET 0.7
 JV1706'FEET NORTHWEST OF THE SOUTH CORNER OF THE 2-1/2 STORY FRAME BUILDING.
 JV1706'THE STATION IS 1.1 FEET ABOVE THE GROUND LEVEL.
 JV1706'
 JV1706'A NOTE TO USERS OF THE STATION FOR LEVELING - AN OLD NGVD 29 ELEVATION
 JV1706'IS STAMPED ON THE DISK.
 JV1706'
 JV1706'MOST USERS WILL BE AWARE OF THE DIFFERENT VERTICAL DATUMS, BUT ANY
 JV1706'FIELD PERSONAL THAT USE THE STAMPED ELEVATION TO PERFORM LEVELING MAY
 JV1706'ENCOUNTER PROBLEMS IF THE WORK IS NOT INTENDED TO BE ON THE OLD DATUM.
 JV1706'
 JV1706
 JV1706                          STATION RECOVERY (2008)
 JV1706
 JV1706'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV1706'RECOVERED AS DESCRIBED.
 JV1706
 JV1706                          STATION RECOVERY (2014)
 JV1706
 JV1706'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV1706'RECOVERED IN GOOD CONDITION.
 JV1706
 JV1706                          STATION RECOVERY (2020)
 JV1706
 JV1706'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV1706'FOUNDATION STONE MORTAR IS DETERIORATING.
 JV1706
 JV1706                          STATION RECOVERY (2021)
 JV1706
 JV1706'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2021 (JMB)
 JV1706'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4406 ***********************************************************************
 AI4406  DESIGNATION -  913 BALTO ECC
 AI4406  PID         -  AI4406
 AI4406  STATE/COUNTY-  MD/CARROLL
 AI4406  COUNTRY     -  US
 AI4406  USGS QUAD   -  HAMPSTEAD (2016)
 AI4406
 AI4406                         *CURRENT SURVEY CONTROL
 AI4406  ______________________________________________________________________
 AI4406* NAD 83(2011) POSITION- 39 36 14.07269(N) 076 50 58.53326(W)   ADJUSTED
 AI4406* NAD 83(2011) ELLIP HT-   245.222 (meters)        (06/27/12)   ADJUSTED
 AI4406* NAD 83(2011) EPOCH   -  2010.00
 AI4406* NAVD 88 ORTHO HEIGHT -   277.37  (meters)      910.0   (feet) LEVELING
 AI4406  ______________________________________________________________________
 AI4406  GEOID HEIGHT    -        -32.156 (meters)                     GEOID18
 AI4406  NAD 83(2011) X  -  1,119,578.410 (meters)                     COMP
 AI4406  NAD 83(2011) Y  - -4,791,999.921 (meters)                     COMP
 AI4406  NAD 83(2011) Z  -  4,044,355.118 (meters)                     COMP
 AI4406  LAPLACE CORR    -          0.43  (seconds)                    DEFLEC18
 AI4406  VERT ORDER      -  THIRD ?
 AI4406
 AI4406  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4406  Standards:
 AI4406         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4406            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4406  -------------------------------------------------------------------
 AI4406  NETWORK    0.81   1.37           0.36   0.30   0.70      0.03290456
 AI4406  -------------------------------------------------------------------
 AI4406  Click here for local accuracies and other accuracy information.
 AI4406
 AI4406.The horizontal coordinates were established by GPS observations
 AI4406.and adjusted by the National Geodetic Survey in June 2012.
 AI4406
 AI4406.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4406.been affixed to the stable North American tectonic plate. See 
 AI4406.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4406
 AI4406.The horizontal coordinates are valid at the epoch date displayed above
 AI4406.which is a decimal equivalence of Year/Month/Day.
 AI4406
 AI4406.The orthometric height was determined by differential leveling.
 AI4406.The vertical network tie was performed by a horz. field party for horz.
 AI4406.obs reductions. Reset procedures were used to establish the elevation.
 AI4406
 AI4406.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4406.GEOID18 height accuracy estimate available here.
 AI4406
 AI4406.Click photographs - Photos may exist for this station.
 AI4406
 AI4406.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4406
 AI4406.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4406
 AI4406.The ellipsoidal height was determined by GPS observations
 AI4406.and is referenced to NAD 83.
 AI4406
 AI4406. The following values were computed from the NAD 83(2011) position.
 AI4406
 AI4406;                    North         East     Units Scale Factor Converg.
 AI4406;SPC MD       -   215,062.391   412,918.161   MT  1.00003055   +0 05 39.8
 AI4406;SPC MD       -   705,583.86  1,354,715.67   sFT  1.00003055   +0 05 39.8
 AI4406;UTM  18      - 4,385,430.708   341,205.682   MT  0.99991045   -1 10 45.5
 AI4406
 AI4406!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4406!SPC MD       -   0.99996153  x   1.00003055  =   0.99999208
 AI4406!UTM  18      -   0.99996153  x   0.99991045  =   0.99987198
 AI4406
 AI4406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4120585430(NAD 83)
 AI4406
 AI4406                          SUPERSEDED SURVEY CONTROL
 AI4406
 AI4406  NAD 83(2007)-  39 36 14.07287(N)    076 50 58.53399(W) AD(2002.00) 0
 AI4406  ELLIP H (02/10/07)  245.241  (m)                       GP(2002.00)    
 AI4406  ELLIP H (08/30/02)  245.252  (m)                       GP(       ) 4 2
 AI4406  NAD 83(1991)-  39 36 14.07332(N)    076 50 58.53425(W) AD(       ) 1
 AI4406  ELLIP H (03/31/00)  245.197  (m)                       GP(       ) 3 1
 AI4406
 AI4406.Superseded values are not recommended for survey control.
 AI4406
 AI4406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4406.See file dsdata.pdf to determine how the superseded data were derived.
 AI4406
 AI4406_MARK LOGO: MD-005
 AI4406_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4406+SATELLITE: SATELLITE OBSERVATIONS - May 31, 2014
 AI4406
 AI4406  HISTORY     - Date     Condition        Report By
 AI4406  HISTORY     - 1997     MONUMENTED       MD-005
 AI4406  HISTORY     - 20140531 POOR             RODCON
 AI4406  HISTORY     - 20200321 MARK NOT FOUND   WTBALL
 AI4406
 AI4406                          STATION DESCRIPTION
 AI4406
 AI4406'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4406'THE STATION IS IN THE TOWN OF HAMPSTEAD, CARROLL COUNTY ALONG STATE
 AI4406'ROUTE 30 (MAIN STREET)
 AI4406'
 AI4406'TO REACH THE STATION FROM THE INTERSECTION OF STATE ROUTE 88 (BLACK
 AI4406'ROCK ROAD) AND STATE ROUTE 30, PROCEED SOUTHEAST ON ROUTE 30 X.X MILES
 AI4406'TO HOUSE NUMBER 1030 AND THE STATION ON THE RIGHT.
 AI4406'
 AI4406'STATION MARK IS A MASONRY NAIL SET FLUSH IN THE PAVED SHOULDER.  IT IS
 AI4406'3.2 FEET (1.0 M) NORTHEAST FROM THE EAST EDGE OF A SIX FOOT WIDE
 AI4406'CONCRETE WALK, 17 FEET (5.2 M) SOUTHEAST FROM THE INTERSECTION OF
 AI4406'ROUTE 30 WITH THE CENTERLINE OF MOTT AVENUE WEST, AND 20 FEET (6.1 M)
 AI4406'SOUTHWEST FROM THE CENTERLINE OF ROUTE 30.
 AI4406
 AI4406                          STATION RECOVERY (2014)
 AI4406
 AI4406'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AI4406'THE MAJORITY OF THE NAIL HAS BEEN DESTROYED.  A PORTION OF THE NAIL
 AI4406'SHANK REMAINS IN THE PAVING.
 AI4406
 AI4406                          STATION RECOVERY (2020)
 AI4406
 AI4406'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AI4406'RECENT PAVING FOR STREETSCAPE PROJECT.  THE MARK IS BELIEVED
 AI4406'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2346 ***********************************************************************
 HV2346  DESIGNATION -  929 WSSC
 HV2346  PID         -  HV2346
 HV2346  STATE/COUNTY-  MD/MONTGOMERY
 HV2346  COUNTRY     -  US
 HV2346  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2346
 HV2346                         *CURRENT SURVEY CONTROL
 HV2346  ______________________________________________________________________
 HV2346* NAD 83(1986) POSITION- 38 58 53.     (N) 077 00 12.     (W)   SCALED
 HV2346* NAVD 88 ORTHO HEIGHT -    73.46  (+/-2cm)      241.0   (feet) VERTCON3
 HV2346  ______________________________________________________________________
 HV2346  GEOID HEIGHT    -        -32.016 (meters)                     GEOID18
 HV2346  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV2346
 HV2346.The horizontal coordinates were scaled from a map and have
 HV2346.an estimated accuracy of +/- 6 seconds.
 HV2346
 HV2346.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2346.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2346
 HV2346.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2346.GEOID18 height accuracy estimate available here.
 HV2346
 HV2346.The vertical order pertains to the NGVD 29 superseded value.
 HV2346
 HV2346.Click photographs - Photos may exist for this station.
 HV2346
 HV2346;                    North         East    Units  Estimated Accuracy
 HV2346;SPC MD       -   145,940.      399,710.      MT  (+/- 180 meters Scaled)
 HV2346
 HV2346_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ264166(NAD 83)
 HV2346
 HV2346                          SUPERSEDED SURVEY CONTROL
 HV2346
 HV2346  NGVD 29 (11/26/84)   73.679  (m)          241.73   (f) ADJUSTED    2 0
 HV2346
 HV2346.Superseded values are not recommended for survey control.
 HV2346
 HV2346.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2346.See file dsdata.pdf to determine how the superseded data were derived.
 HV2346
 HV2346_MARKER: Z = SEE DESCRIPTION
 HV2346_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2346_SP_SET: CURB
 HV2346_STAMPING: WSSC 929
 HV2346_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2346
 HV2346  HISTORY     - Date     Condition        Report By
 HV2346  HISTORY     - UNK      MONUMENTED       WSSC
 HV2346  HISTORY     - 1951     GOOD             CGS
 HV2346  HISTORY     - 1952     MARK NOT FOUND   CGS
 HV2346
 HV2346                          STATION DESCRIPTION
 HV2346
 HV2346'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2346'AT TAKOMA PARK.
 HV2346'AT THE NORTHWEST CORNER OF THE INTERSECTION OF CARROLL AVENUE
 HV2346'AND LINOCLN AVENUE, IN FRONT OF THE HOUSE AT 7428 CARROLL
 HV2346'AVENUE, AND IN A STONE SET IN THE CURBING. LAG SCREW AND WASHER.
 HV2346
 HV2346                          STATION RECOVERY (1952)
 HV2346
 HV2346'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 HV2346'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2347 ***********************************************************************
 HV2347  DESIGNATION -  930 WSSC
 HV2347  PID         -  HV2347
 HV2347  STATE/COUNTY-  MD/MONTGOMERY
 HV2347  COUNTRY     -  US
 HV2347  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2347
 HV2347                         *CURRENT SURVEY CONTROL
 HV2347  ______________________________________________________________________
 HV2347* NAD 83(1986) POSITION- 38 58 57.     (N) 077 00 04.     (W)   SCALED
 HV2347* NAVD 88 ORTHO HEIGHT -    59.908 (meters)      196.55  (feet) ADJUSTED
 HV2347  ______________________________________________________________________
 HV2347  GEOID HEIGHT    -        -32.019 (meters)                     GEOID18
 HV2347  DYNAMIC HEIGHT  -         59.876 (meters)      196.44  (feet) COMP
 HV2347  MODELED GRAVITY -    980,095.2   (mgal)                       NAVD 88
 HV2347
 HV2347  VERT ORDER      -  SECOND    CLASS 0
 HV2347
 HV2347.The horizontal coordinates were scaled from a map and have
 HV2347.an estimated accuracy of +/- 6 seconds.
 HV2347
 HV2347.The orthometric height was determined by differential leveling and
 HV2347.adjusted by the NATIONAL GEODETIC SURVEY
 HV2347.in June 1991.
 HV2347
 HV2347.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2347.GEOID18 height accuracy estimate available here.
 HV2347
 HV2347.Click photographs - Photos may exist for this station.
 HV2347
 HV2347.The dynamic height is computed by dividing the NAVD 88
 HV2347.geopotential number by the normal gravity value computed on the
 HV2347.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2347.degrees latitude (g = 980.6199 gals.).
 HV2347
 HV2347.The modeled gravity was interpolated from observed gravity values.
 HV2347
 HV2347;                    North         East    Units  Estimated Accuracy
 HV2347;SPC MD       -   146,060.      399,900.      MT  (+/- 180 meters Scaled)
 HV2347
 HV2347_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ266167(NAD 83)
 HV2347
 HV2347                          SUPERSEDED SURVEY CONTROL
 HV2347
 HV2347  NGVD 29 (11/26/84)   60.120  (m)          197.24   (f) ADJUSTED    2 0
 HV2347
 HV2347.Superseded values are not recommended for survey control.
 HV2347
 HV2347.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2347.See file dsdata.pdf to determine how the superseded data were derived.
 HV2347
 HV2347_MARKER: Z = SEE DESCRIPTION
 HV2347_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV2347_STAMPING: WSSC 930
 HV2347_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2347
 HV2347  HISTORY     - Date     Condition        Report By
 HV2347  HISTORY     - UNK      MONUMENTED       WSSC
 HV2347  HISTORY     - 1952     GOOD             CGS
 HV2347
 HV2347                          STATION DESCRIPTION
 HV2347
 HV2347'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 HV2347'AT TAKOMA PARK.
 HV2347'AT TAKOMA PARK, MONTGOMERY COUNTY, IN THE WEST ANGLE OF THE
 HV2347'INTERSECTION OF CARROLL AND JEFFERSON AVENUES ABOUT ON THE
 HV2347'BISECTOR OF THE ANGLE FORMED BY THE TWO NEAR EDGES OF THE
 HV2347'SIDEWALK, AND 0.9 FOOT FROM A CONCRETE RETAINING WALL.  A
 HV2347'WASHINGTON SUBURBAN SANITARY DISTRICT LAG SCREW AND WASHER,
 HV2347'STAMPED WSSC 930 AND SET IN THE TOP OF A 2-INCH IRON PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0563 ***********************************************************************
 HV0563  DESIGNATION -  94.6
 HV0563  PID         -  HV0563
 HV0563  STATE/COUNTY-  MD/ST MARYS
 HV0563  COUNTRY     -  US
 HV0563  USGS QUAD   -  PINEY POINT (2016)
 HV0563
 HV0563                         *CURRENT SURVEY CONTROL
 HV0563  ______________________________________________________________________
 HV0563* NAD 83(1986) POSITION- 38 14 36.     (N) 076 34 12.     (W)   SCALED
 HV0563* NAVD 88 ORTHO HEIGHT -    28.080 (meters)       92.13  (feet) POSTED
 HV0563  ______________________________________________________________________
 HV0563  GEOID HEIGHT    -        -34.184 (meters)                     GEOID18
 HV0563  DYNAMIC HEIGHT  -         28.06  (meters)       92.1   (feet) COMP
 HV0563  MODELED GRAVITY -    980,009.0   (mgal)                       NAVD 88
 HV0563
 HV0563  VERT ORDER      -  * POSTED, SEE BELOW
 HV0563
 HV0563.The horizontal coordinates were scaled from a map and have
 HV0563.an estimated accuracy of +/- 6 seconds.
 HV0563
 HV0563.The orthometric height was determined by differential leveling
 HV0563.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0563
 HV0563.* This is a POSTED BENCH MARK height.
 HV0563
 HV0563.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0563.GEOID18 height accuracy estimate available here.
 HV0563
 HV0563.Click photographs - Photos may exist for this station.
 HV0563
 HV0563.The dynamic height is computed by dividing the NAVD 88
 HV0563.geopotential number by the normal gravity value computed on the
 HV0563.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0563.degrees latitude (g = 980.6199 gals.).
 HV0563
 HV0563.The modeled gravity was interpolated from observed gravity values.
 HV0563
 HV0563;                    North         East    Units  Estimated Accuracy
 HV0563;SPC MD       -    64,100.      437,640.      MT  (+/- 180 meters Scaled)
 HV0563
 HV0563_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH626339(NAD 83)
 HV0563
 HV0563                          SUPERSEDED SURVEY CONTROL
 HV0563
 HV0563  NGVD 29 (11/26/84)   28.413  (m)           93.22   (f) ADJUSTED    1 2
 HV0563
 HV0563.Superseded values are not recommended for survey control.
 HV0563
 HV0563.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0563.See file dsdata.pdf to determine how the superseded data were derived.
 HV0563
 HV0563_MARKER: Q = CHISELED SQUARE
 HV0563_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0563_SP_SET: CULVERT HEADWALL
 HV0563_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0563+STABILITY: SURFACE MOTION
 HV0563
 HV0563  HISTORY     - Date     Condition        Report By
 HV0563  HISTORY     - UNK      MONUMENTED       USGS
 HV0563  HISTORY     - 1941     GOOD             CGS
 HV0563  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0563
 HV0563                          STATION DESCRIPTION
 HV0563
 HV0563'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0563'4.7 MI NW FROM GREAT MILLS.
 HV0563'ABOUT 4.7 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0563'OFFICE AT GREAT MILLS, SAINT MARYS COUNTY, AT THE JUNCTION OF A
 HV0563'ROAD LEADING SOUTH THROUGH THE WOODS, 98 FEET EAST OF
 HV0563'POWER-TRANSMISSION LINE POLE 157, 77 FEET WEST OF POWER-TRANSMISSION
 HV0563'LINE POLE 158, AT A 12-INCH CONCRETE CULVERT, ON THE CENTER OF THE
 HV0563'TOP OF THE SOUTH HEAD WALL, OPPOSITE BENCH MARK M 41, DESCRIBED
 HV0563'BELOW, 15 FEET EAST OF THE CENTER LINE OF THE ROAD, AND 14 FEET
 HV0563'SOUTH OF THE CENTER LINE OF THE HIGHWAY.  A CHISELED SQUARE,
 HV0563'MARKED 94.6.
 HV0563
 HV0563                          STATION RECOVERY (1971)
 HV0563
 HV0563'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0563'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1117 ***********************************************************************
 HV1117  DESIGNATION -  946
 HV1117  PID         -  HV1117
 HV1117  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1117  COUNTRY     -  US
 HV1117  USGS QUAD   -  ANACOSTIA (2016)
 HV1117
 HV1117                         *CURRENT SURVEY CONTROL
 HV1117  ______________________________________________________________________
 HV1117* NAD 83(1986) POSITION- 38 48 42.     (N) 076 53 44.     (W)   SCALED
 HV1117* NAVD 88 ORTHO HEIGHT -    83.278 (meters)      273.22  (feet) ADJUSTED
 HV1117  ______________________________________________________________________
 HV1117  GEOID HEIGHT    -        -32.489 (meters)                     GEOID18
 HV1117  DYNAMIC HEIGHT  -         83.231 (meters)      273.07  (feet) COMP
 HV1117  MODELED GRAVITY -    980,069.0   (mgal)                       NAVD 88
 HV1117
 HV1117  VERT ORDER      -  SECOND    CLASS 0
 HV1117
 HV1117.The horizontal coordinates were scaled from a map and have
 HV1117.an estimated accuracy of +/- 6 seconds.
 HV1117
 HV1117.The orthometric height was determined by differential leveling and
 HV1117.adjusted by the NATIONAL GEODETIC SURVEY
 HV1117.in June 1991.
 HV1117
 HV1117.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1117.GEOID18 height accuracy estimate available here.
 HV1117
 HV1117.Click photographs - Photos may exist for this station.
 HV1117
 HV1117.The dynamic height is computed by dividing the NAVD 88
 HV1117.geopotential number by the normal gravity value computed on the
 HV1117.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1117.degrees latitude (g = 980.6199 gals.).
 HV1117
 HV1117.The modeled gravity was interpolated from observed gravity values.
 HV1117
 HV1117;                    North         East    Units  Estimated Accuracy
 HV1117;SPC MD       -   127,110.      409,070.      MT  (+/- 180 meters Scaled)
 HV1117
 HV1117_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH354975(NAD 83)
 HV1117
 HV1117                          SUPERSEDED SURVEY CONTROL
 HV1117
 HV1117  NGVD 29 (05/01/89)   83.518  (m)          274.01   (f) ADJUSTED    2 0
 HV1117  NGVD 29 (??/??/87)   83.544  (m)          274.09   (f) SUPERSEDED  2 0
 HV1117
 HV1117.Superseded values are not recommended for survey control.
 HV1117
 HV1117.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1117.See file dsdata.pdf to determine how the superseded data were derived.
 HV1117
 HV1117_MARKER: DD = SURVEY DISK
 HV1117_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1117_STAMPING: 946
 HV1117_MARK LOGO: USACE
 HV1117_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1117+STABILITY: SURFACE MOTION
 HV1117
 HV1117  HISTORY     - Date     Condition        Report By
 HV1117  HISTORY     - UNK      MONUMENTED       USACE
 HV1117  HISTORY     - 1942     GOOD             CGS
 HV1117  HISTORY     - 1956     MARK NOT FOUND   CGS
 HV1117
 HV1117                          STATION DESCRIPTION
 HV1117
 HV1117'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1117'0.9 MI NE FROM CAMP SPRINGS.
 HV1117'0.9 MILE NORTHEAST ALONG THE CAMP SPRINGS-MEADOWS ROAD FROM THE
 HV1117'INTERSECTION OF STATE HIGHWAY 5 AT CAMP SPRINGS, NEAR THE WEST
 HV1117'GATE OF ANDREWS AFB, AT THE JUNCTION OF A WIDE DIRT ROAD LEADING
 HV1117'NORTHWEST, 55 FEET NORTHWEST OF THE CENTERLINE OF THE PAVED
 HV1117'ROAD, AND 20 FEET SOUTHWEST OF THE CENTERLINE OF THE DIRT ROAD.
 HV1117
 HV1117                          STATION RECOVERY (1956)
 HV1117
 HV1117'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956
 HV1117'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2338 ***********************************************************************
 HV2338  DESIGNATION -  952 WSSC
 HV2338  PID         -  HV2338
 HV2338  STATE/COUNTY-  MD/MONTGOMERY
 HV2338  COUNTRY     -  US
 HV2338  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2338
 HV2338                         *CURRENT SURVEY CONTROL
 HV2338  ______________________________________________________________________
 HV2338* NAD 83(1986) POSITION- 38 59 12.     (N) 077 01 17.     (W)   SCALED
 HV2338* NAVD 88 ORTHO HEIGHT -    98.47  (+/-2cm)      323.1   (feet) VERTCON3
 HV2338  ______________________________________________________________________
 HV2338  GEOID HEIGHT    -        -31.984 (meters)                     GEOID18
 HV2338  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV2338
 HV2338.The horizontal coordinates were scaled from a map and have
 HV2338.an estimated accuracy of +/- 6 seconds.
 HV2338
 HV2338.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2338.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2338
 HV2338.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2338.GEOID18 height accuracy estimate available here.
 HV2338
 HV2338.The vertical order pertains to the NGVD 29 superseded value.
 HV2338
 HV2338.Click photographs - Photos may exist for this station.
 HV2338
 HV2338;                    North         East    Units  Estimated Accuracy
 HV2338;SPC MD       -   146,530.      398,150.      MT  (+/- 180 meters Scaled)
 HV2338
 HV2338_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ249172(NAD 83)
 HV2338
 HV2338                          SUPERSEDED SURVEY CONTROL
 HV2338
 HV2338  NGVD 29 (11/26/84)   98.680  (m)          323.75   (f) ADJUSTED    2 0
 HV2338
 HV2338.Superseded values are not recommended for survey control.
 HV2338
 HV2338.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2338.See file dsdata.pdf to determine how the superseded data were derived.
 HV2338
 HV2338_MARKER: Z = SEE DESCRIPTION
 HV2338_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2338_SP_SET: SIDEWALK
 HV2338_STAMPING: WSSC 952
 HV2338_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2338
 HV2338  HISTORY     - Date     Condition        Report By
 HV2338  HISTORY     - UNK      MONUMENTED       WSSC
 HV2338  HISTORY     - 1951     GOOD             CGS
 HV2338
 HV2338                          STATION DESCRIPTION
 HV2338
 HV2338'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV2338'IN TAKOMA PARK.
 HV2338'AT THE EAST CORNER OF THE INTERSECTION OF PHILADELPHIA AVENUE
 HV2338'AND CHICAGO AVENUE, AT SILVER SPRING-TAKOMA PARK HIGH SCHOOL,
 HV2338'AND IN THE SOUTH END OF THE CONCRETE WALK LEADING TO THE
 HV2338'SCHOOL. LAG SCREW AND WASHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2605 ***********************************************************************
 JV2605  DESIGNATION -  9523
 JV2605  PID         -  JV2605
 JV2605  STATE/COUNTY-  MD/MONTGOMERY
 JV2605  COUNTRY     -  US
 JV2605  USGS QUAD   -  GAITHERSBURG (2016)
 JV2605
 JV2605                         *CURRENT SURVEY CONTROL
 JV2605  ______________________________________________________________________
 JV2605* NAD 83(1986) POSITION- 39 08 16.     (N) 077 11 35.     (W)   SCALED
 JV2605* NAVD 88 ORTHO HEIGHT -   157.95  (+/-2cm)      518.2   (feet) VERTCON3
 JV2605  ______________________________________________________________________
 JV2605  GEOID HEIGHT    -        -31.732 (meters)                     GEOID18
 JV2605  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2605
 JV2605.The horizontal coordinates were scaled from a map and have
 JV2605.an estimated accuracy of +/- 6 seconds.
 JV2605
 JV2605.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2605.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2605
 JV2605.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2605.GEOID18 height accuracy estimate available here.
 JV2605
 JV2605.The vertical order pertains to the NGVD 29 superseded value.
 JV2605
 JV2605.Click photographs - Photos may exist for this station.
 JV2605
 JV2605;                    North         East    Units  Estimated Accuracy
 JV2605;SPC MD       -   163,320.      383,310.      MT  (+/- 180 meters Scaled)
 JV2605
 JV2605_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ104343(NAD 83)
 JV2605
 JV2605                          SUPERSEDED SURVEY CONTROL
 JV2605
 JV2605  NGVD 29 (11/26/84)  158.154  (m)          518.88   (f) ADJUSTED    2 0
 JV2605
 JV2605.Superseded values are not recommended for survey control.
 JV2605
 JV2605.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2605.See file dsdata.pdf to determine how the superseded data were derived.
 JV2605
 JV2605_MARKER: DD = SURVEY DISK
 JV2605_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2605_STAMPING: 9523
 JV2605_MARK LOGO: CGS+SS
 JV2605_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2605+STABILITY: SURFACE MOTION
 JV2605
 JV2605  HISTORY     - Date     Condition        Report By
 JV2605  HISTORY     - 1934     MONUMENTED       MDGS
 JV2605  HISTORY     - 1946     MARK NOT FOUND   CGS
 JV2605
 JV2605                          STATION DESCRIPTION
 JV2605
 JV2605'DESCRIBED BY COAST AND GEODETIC SURVEY 1946
 JV2605'IN GAITHERSBURG.
 JV2605'AT GAITHERSBURG, MONTGOMERY COUNTY, ON SUMMIT AVENUE, AT THE
 JV2605'INTERSECTION OF FREDERICK AVENUE (U.S. 240), 74.9 FEET NORTHEAST OF
 JV2605'THE EAST CORNER OF A SIDEWALK NORTHWEST OF THE INTERSECTION,
 JV2605'64 FEET NORTH OF THE CENTER OF THE INTERSECTION, 18.4 FEET
 JV2605'NORTHWEST OF THE CENTER LINE OF SUMMIT AVENUE, BETWEEN THE SIDEWALK
 JV2605'AND THE AVENUE, AND 10 FEET SOUTHEAST OF A TREE.  A STATE SURVEY
 JV2605'STANDARD DISK, STAMPED 9523 AND SET IN THE TOP OF A CONCRETE POST.
 JV2605'ABOUT AN HOUR OF DIGGING AT THE SITE FAILED TO LOCATE MARK.
 JV2605'A PIECE OF BROKEN CONCRETE WITH REINFORCING ROD PROJECTING WAS
 JV2605'FOUND NEAR CORNER.  MAY BE A PART OF POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1423 ***********************************************************************
 HV1423  DESIGNATION -  955 WSSC
 HV1423  PID         -  HV1423
 HV1423  STATE/COUNTY-  MD/MONTGOMERY
 HV1423  COUNTRY     -  US
 HV1423  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1423
 HV1423                         *CURRENT SURVEY CONTROL
 HV1423  ______________________________________________________________________
 HV1423* NAD 83(1986) POSITION- 38 58 34.     (N) 076 59 50.     (W)   SCALED
 HV1423* NAVD 88 ORTHO HEIGHT -    69.890 (meters)      229.30  (feet) ADJUSTED
 HV1423  ______________________________________________________________________
 HV1423  GEOID HEIGHT    -        -32.028 (meters)                     GEOID18
 HV1423  DYNAMIC HEIGHT  -         69.853 (meters)      229.18  (feet) COMP
 HV1423  MODELED GRAVITY -    980,099.1   (mgal)                       NAVD 88
 HV1423
 HV1423  VERT ORDER      -  SECOND    CLASS 0
 HV1423
 HV1423.The horizontal coordinates were scaled from a map and have
 HV1423.an estimated accuracy of +/- 6 seconds.
 HV1423
 HV1423.The orthometric height was determined by differential leveling and
 HV1423.adjusted by the NATIONAL GEODETIC SURVEY
 HV1423.in June 1991.
 HV1423
 HV1423.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1423.GEOID18 height accuracy estimate available here.
 HV1423
 HV1423.Click photographs - Photos may exist for this station.
 HV1423
 HV1423.The dynamic height is computed by dividing the NAVD 88
 HV1423.geopotential number by the normal gravity value computed on the
 HV1423.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1423.degrees latitude (g = 980.6199 gals.).
 HV1423
 HV1423.The modeled gravity was interpolated from observed gravity values.
 HV1423
 HV1423;                    North         East    Units  Estimated Accuracy
 HV1423;SPC MD       -   145,350.      400,240.      MT  (+/- 180 meters Scaled)
 HV1423
 HV1423_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ269160(NAD 83)
 HV1423
 HV1423                          SUPERSEDED SURVEY CONTROL
 HV1423
 HV1423  NGVD 29 (11/26/84)   70.109  (m)          230.02   (f) ADJUSTED    2 0
 HV1423
 HV1423.Superseded values are not recommended for survey control.
 HV1423
 HV1423.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1423.See file dsdata.pdf to determine how the superseded data were derived.
 HV1423
 HV1423_MARKER: Z = SEE DESCRIPTION
 HV1423_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1423_STAMPING: WSSC 955
 HV1423_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1423+STABILITY: SURFACE MOTION
 HV1423
 HV1423  HISTORY     - Date     Condition        Report By
 HV1423  HISTORY     - UNK      MONUMENTED       WSSC
 HV1423  HISTORY     - 1951     GOOD             CGS
 HV1423
 HV1423                          STATION DESCRIPTION
 HV1423
 HV1423'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1423'AT TAKOMA PARK.
 HV1423'AT TAKOMA PARK, MONTGOMERY COUNTY, AT THE WEST CORNER OF THE
 HV1423'INTERSECTION OF ELM AVENUE AND ETHAN ALLEN AVENUE, ON THE ETHAN
 HV1423'ALLEN AVENUE SIDE OF THE CORNER, BETWEEN THE CURB AND THE
 HV1423'SIDEWALK, 17-1/2 FEET NORTHWEST OF THE NORTHWEST CURB LINE OF ELM
 HV1423'AVENUE, 10.2 FEET FROM THE CORNER OF A CINDER-BLOCK RETAINING
 HV1423'WALL, 2.7 FEET FROM NEAR CURB OF ETHAN ALLEN AVENUE, AND 1.5
 HV1423'FEET FROM NEAR EDGE OF THE SIDEWALK ON ETHAN ALLEN AVENUE.  A
 HV1423'ROUND-HEAD SCREW AND WASHER, STAMPED TP MD. BM2 AND SET IN THE
 HV1423'TOP OF A 5-INCH-SQUARE CONCRETE POST PROJECTING ABOUT 1-1/2
 HV1423'INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3444 ***********************************************************************
 JV3444  DESIGNATION -  961
 JV3444  PID         -  JV3444
 JV3444  STATE/COUNTY-  MD/WASHINGTON
 JV3444  COUNTRY     -  US
 JV3444  USGS QUAD   -  SMITHSBURG (2016)
 JV3444
 JV3444                         *CURRENT SURVEY CONTROL
 JV3444  ______________________________________________________________________
 JV3444* NAD 83(1986) POSITION- 39 40 41.     (N) 077 32 30.     (W)   SCALED
 JV3444* NAVD 88 ORTHO HEIGHT -   292.574 (meters)      959.89  (feet) ADJUSTED
 JV3444  ______________________________________________________________________
 JV3444  GEOID HEIGHT    -        -33.640 (meters)                     GEOID18
 JV3444  DYNAMIC HEIGHT  -        292.403 (meters)      959.33  (feet) COMP
 JV3444  MODELED GRAVITY -    980,034.5   (mgal)                       NAVD 88
 JV3444
 JV3444  VERT ORDER      -  SECOND    CLASS 0
 JV3444
 JV3444.The horizontal coordinates were scaled from a map and have
 JV3444.an estimated accuracy of +/- 6 seconds.
 JV3444
 JV3444.The orthometric height was determined by differential leveling and
 JV3444.adjusted by the NATIONAL GEODETIC SURVEY
 JV3444.in June 1991.
 JV3444
 JV3444.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3444.GEOID18 height accuracy estimate available here.
 JV3444
 JV3444.Click photographs - Photos may exist for this station.
 JV3444
 JV3444.The dynamic height is computed by dividing the NAVD 88
 JV3444.geopotential number by the normal gravity value computed on the
 JV3444.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3444.degrees latitude (g = 980.6199 gals.).
 JV3444
 JV3444.The modeled gravity was interpolated from observed gravity values.
 JV3444
 JV3444;                    North         East    Units  Estimated Accuracy
 JV3444;SPC MD       -   223,420.      353,530.      MT  (+/- 180 meters Scaled)
 JV3444
 JV3444_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ820951(NAD 83)
 JV3444
 JV3444                          SUPERSEDED SURVEY CONTROL
 JV3444
 JV3444  NGVD 29 (11/26/84)  292.746  (m)          960.45   (f) ADJUSTED    2 0
 JV3444
 JV3444.Superseded values are not recommended for survey control.
 JV3444
 JV3444.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3444.See file dsdata.pdf to determine how the superseded data were derived.
 JV3444
 JV3444_MARKER: DB = BENCH MARK DISK
 JV3444_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3444_SP_SET: FOUNDATION
 JV3444_STAMPING: 961 MD
 JV3444_MARK LOGO: USGS
 JV3444_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3444
 JV3444  HISTORY     - Date     Condition        Report By
 JV3444  HISTORY     - 1908     MONUMENTED       USGS
 JV3444  HISTORY     - 1935     GOOD             CGS
 JV3444  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3444
 JV3444                          STATION DESCRIPTION
 JV3444
 JV3444'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV3444'AT EDGEMONT.
 JV3444'AT EDGEMONT, WASHINGTON COUNTY, ABOUT 225 FEET WEST OF THE
 JV3444'WESTERN MARYLAND RAILWAY STATION, IN THE STONE FOUNDATION OF
 JV3444'THE BACHTELLS STORE AND POST OFFICE, AND 40 FEET SOUTH OF THE
 JV3444'CENTER LINE OF THE MAIN TRACK.  A UNITED STATES GEOLOGICAL
 JV3444'SURVEY STANDARD DISK, STAMPED 961 MD AND SET VERTICALLY.
 JV3444
 JV3444                          STATION RECOVERY (1998)
 JV3444
 JV3444'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3444'THE STATION WAS SEARCHED FOR AND NOT FOUND.  UNABLE TO LOCATE THE
 JV3444'TRAIN STATION AND POST OFFICE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0503 ***********************************************************************
 HU0503  DESIGNATION -  97 KEM
 HU0503  PID         -  HU0503
 HU0503  STATE/COUNTY-  MD/SOMERSET
 HU0503  COUNTRY     -  US
 HU0503  USGS QUAD   -  POCOMOKE CITY (2016)
 HU0503
 HU0503                         *CURRENT SURVEY CONTROL
 HU0503  ______________________________________________________________________
 HU0503* NAD 83(1986) POSITION- 38 06 03.     (N) 075 36 41.     (W)   SCALED
 HU0503* NAVD 88 ORTHO HEIGHT -     6.005 (meters)       19.70  (feet) ADJUSTED
 HU0503  ______________________________________________________________________
 HU0503  GEOID HEIGHT    -        -36.208 (meters)                     GEOID18
 HU0503  DYNAMIC HEIGHT  -          6.001 (meters)       19.69  (feet) COMP
 HU0503  MODELED GRAVITY -    979,976.4   (mgal)                       NAVD 88
 HU0503
 HU0503  VERT ORDER      -  FIRST     CLASS II
 HU0503
 HU0503.The horizontal coordinates were scaled from a map and have
 HU0503.an estimated accuracy of +/- 6 seconds.
 HU0503
 HU0503.The orthometric height was determined by differential leveling and
 HU0503.adjusted by the NATIONAL GEODETIC SURVEY
 HU0503.in June 1991.
 HU0503
 HU0503.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0503.GEOID18 height accuracy estimate available here.
 HU0503
 HU0503.Click photographs - Photos may exist for this station.
 HU0503
 HU0503.The dynamic height is computed by dividing the NAVD 88
 HU0503.geopotential number by the normal gravity value computed on the
 HU0503.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0503.degrees latitude (g = 980.6199 gals.).
 HU0503
 HU0503.The modeled gravity was interpolated from observed gravity values.
 HU0503
 HU0503;                    North         East    Units  Estimated Accuracy
 HU0503;SPC MD       -    49,120.      521,800.      MT  (+/- 180 meters Scaled)
 HU0503
 HU0503_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH463171(NAD 83)
 HU0503
 HU0503                          SUPERSEDED SURVEY CONTROL
 HU0503
 HU0503  NGVD 29 (11/26/84)    6.256  (m)           20.52   (f) ADJUSTED    1 2
 HU0503
 HU0503.Superseded values are not recommended for survey control.
 HU0503
 HU0503.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0503.See file dsdata.pdf to determine how the superseded data were derived.
 HU0503
 HU0503_STAMPING: 97 KEM 1967 21 FT
 HU0503_MARK LOGO: USGS
 HU0503
 HU0503  HISTORY     - Date     Condition        Report By
 HU0503  HISTORY     - 1967     MONUMENTED       USGS
 HU0503  HISTORY     - 1972     GOOD             NGS
 HU0503  HISTORY     - 20191106 MARK NOT FOUND   ARCSHE
 HU0503
 HU0503                          STATION DESCRIPTION
 HU0503
 HU0503'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0503'3 MI NW FROM POCOMOKE CITY.
 HU0503'ABOUT 3.0 MILES NORTHWEST ALONG THE PENN CENTRAL RAILROAD FROM
 HU0503'THE CROSSING OF CLARKE AVENUE AT POCOMOKE CITY, 0.35 MILE
 HU0503'NORTHWEST OF MILEPOST 28, AT THE JUNCTION OF A BLACK TOP ROAD
 HU0503'LEADING NORTHEAST, 31 FEET NORTH OF THE CENTER OF THE CROSSING OF
 HU0503'THE ROAD AND THE TRACK, 21.2 FEET NORTHEAST OF THE NORTHEAST
 HU0503'RAIL, 31 FEET NORTHWEST OF THE CENTER LINE OF THE ROAD, 6 FEET
 HU0503'NORTHWEST OF A CROSSING SIGN, 0.6 FOOT SOUTHWEST OF A METAL
 HU0503'WITNESS POST, ABOUT LEVEL WITH THE TRACK AND SET IN THE TOP OF A
 HU0503'CONCRETE POST FLUSH WITH THE LEVEL OF THE GROUND.
 HU0503
 HU0503                          STATION RECOVERY (2019)
 HU0503
 HU0503'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HU0503'A CONCRETE POST WAS FOUND BROKEN OFF AT ABOUT THE LOCATION INDICATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1341 ***********************************************************************
 HV1341  DESIGNATION -  973 WSSC
 HV1341  PID         -  HV1341
 HV1341  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1341  COUNTRY     -  US
 HV1341  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1341
 HV1341                         *CURRENT SURVEY CONTROL
 HV1341  ______________________________________________________________________
 HV1341* NAD 83(1986) POSITION- 38 55 28.     (N) 076 55 42.     (W)   SCALED
 HV1341* NAVD 88 ORTHO HEIGHT -    14.32  (+/-2cm)       47.0   (feet) VERTCON3
 HV1341  ______________________________________________________________________
 HV1341  GEOID HEIGHT    -        -32.239 (meters)                     GEOID18
 HV1341  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1341
 HV1341.The horizontal coordinates were scaled from a map and have
 HV1341.an estimated accuracy of +/- 6 seconds.
 HV1341
 HV1341.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1341.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1341
 HV1341.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1341.GEOID18 height accuracy estimate available here.
 HV1341
 HV1341.The vertical order pertains to the NGVD 29 superseded value.
 HV1341
 HV1341.Click photographs - Photos may exist for this station.
 HV1341
 HV1341;                    North         East    Units  Estimated Accuracy
 HV1341;SPC MD       -   139,620.      406,220.      MT  (+/- 180 meters Scaled)
 HV1341
 HV1341_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ328101(NAD 83)
 HV1341
 HV1341                          SUPERSEDED SURVEY CONTROL
 HV1341
 HV1341  NGVD 29 (11/26/84)   14.553  (m)           47.75   (f) ADJUSTED    2 0
 HV1341
 HV1341.Superseded values are not recommended for survey control.
 HV1341
 HV1341.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1341.See file dsdata.pdf to determine how the superseded data were derived.
 HV1341
 HV1341_MARKER: Z = SEE DESCRIPTION
 HV1341_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1341_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1341+STABILITY: SURFACE MOTION
 HV1341
 HV1341  HISTORY     - Date     Condition        Report By
 HV1341  HISTORY     - UNK      MONUMENTED       WSSC
 HV1341  HISTORY     - 1944     GOOD             WSSC
 HV1341
 HV1341                          STATION DESCRIPTION
 HV1341
 HV1341'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1341'1.3 MI NE FROM MD DC LINE.
 HV1341'ON KENILWORTH AVENUE, AT THE CROSSING OF THE BALTIMORE AND
 HV1341'OHIO RAILROAD (SHEPHERDS BRANCH) 18 FEET NORTHEAST OF THE ROAD,
 HV1341'15 FEET SOUTH OF THE TRACK, AND 2.5 FEET BELOW THE SURFACE OF
 HV1341'THE GROUND. BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3235 ***********************************************************************
 JV3235  DESIGNATION -  974+03
 JV3235  PID         -  JV3235
 JV3235  STATE/COUNTY-  MD/WASHINGTON
 JV3235  COUNTRY     -  US
 JV3235  USGS QUAD   -  FUNKSTOWN (2017)
 JV3235
 JV3235                         *CURRENT SURVEY CONTROL
 JV3235  ______________________________________________________________________
 JV3235* NAD 83(1986) POSITION- 39 34 18.     (N) 077 43 21.     (W)   SCALED
 JV3235* NAVD 88 ORTHO HEIGHT -   154.01  (+/-2cm)      505.3   (feet) VERTCON3
 JV3235  ______________________________________________________________________
 JV3235  GEOID HEIGHT    -        -34.020 (meters)                     GEOID18
 JV3235  VERT ORDER      -  ? (See Below)
 JV3235
 JV3235.The horizontal coordinates were scaled from a map and have
 JV3235.an estimated accuracy of +/- 6 seconds.
 JV3235
 JV3235.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3235.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3235
 JV3235.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3235.GEOID18 height accuracy estimate available here.
 JV3235
 JV3235.The vertical order pertains to the NGVD 29 superseded value.
 JV3235
 JV3235.Click photographs - Photos may exist for this station.
 JV3235
 JV3235;                    North         East    Units  Estimated Accuracy
 JV3235;SPC MD       -   211,720.      337,920.      MT  (+/- 180 meters Scaled)
 JV3235
 JV3235_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ661837(NAD 83)
 JV3235
 JV3235                          SUPERSEDED SURVEY CONTROL
 JV3235
 JV3235  NGVD 29 (11/26/84)  154.218  (m)          505.96   (f) ADJUSTED       
 JV3235
 JV3235.Superseded values are not recommended for survey control.
 JV3235
 JV3235.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3235.See file dsdata.pdf to determine how the superseded data were derived.
 JV3235
 JV3235_MARKER: Q = CHISELED SQUARE
 JV3235_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3235_SP_SET: BRIDGE
 JV3235_MARK LOGO: BORR
 JV3235_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3235
 JV3235  HISTORY     - Date     Condition        Report By
 JV3235  HISTORY     - UNK      MONUMENTED       BORR
 JV3235  HISTORY     - 1934     GOOD             CGS
 JV3235
 JV3235                          STATION DESCRIPTION
 JV3235
 JV3235'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JV3235'1.8 MI N FROM BREATHEDSVILLE.
 JV3235'1.8 MILES NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV3235'STATION AT BREATHEDSVILLE, WASHINGTON COUNTY, 10 POLES NORTH OF
 JV3235'THE STATION AT ROXBURY, AT A BRIDGE OVER A FARM ROAD, AND ON THE
 JV3235'EAST END OF THE NORTH STONE BACK WALL.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1337 ***********************************************************************
 HV1337  DESIGNATION -  975 WSSC
 HV1337  PID         -  HV1337
 HV1337  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1337  COUNTRY     -  US
 HV1337  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1337
 HV1337                         *CURRENT SURVEY CONTROL
 HV1337  ______________________________________________________________________
 HV1337* NAD 83(1986) POSITION- 38 54 40.     (N) 076 55 46.     (W)   SCALED
 HV1337* NAVD 88 ORTHO HEIGHT -    16.68  (+/-2cm)       54.7   (feet) VERTCON3
 HV1337  ______________________________________________________________________
 HV1337  GEOID HEIGHT    -        -32.257 (meters)                     GEOID18
 HV1337  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1337
 HV1337.The horizontal coordinates were scaled from a map and have
 HV1337.an estimated accuracy of +/- 6 seconds.
 HV1337
 HV1337.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1337.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1337
 HV1337.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1337.GEOID18 height accuracy estimate available here.
 HV1337
 HV1337.The vertical order pertains to the NGVD 29 superseded value.
 HV1337
 HV1337.Click photographs - Photos may exist for this station.
 HV1337
 HV1337;                    North         East    Units  Estimated Accuracy
 HV1337;SPC MD       -   138,140.      406,120.      MT  (+/- 180 meters Scaled)
 HV1337
 HV1337_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ327086(NAD 83)
 HV1337
 HV1337                          SUPERSEDED SURVEY CONTROL
 HV1337
 HV1337  NGVD 29 (11/26/84)   16.920  (m)           55.51   (f) ADJUSTED    2 0
 HV1337
 HV1337.Superseded values are not recommended for survey control.
 HV1337
 HV1337.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1337.See file dsdata.pdf to determine how the superseded data were derived.
 HV1337
 HV1337_MARKER: Z = SEE DESCRIPTION
 HV1337_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1337_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1337+STABILITY: SURFACE MOTION
 HV1337
 HV1337  HISTORY     - Date     Condition        Report By
 HV1337  HISTORY     - UNK      MONUMENTED       WSSC
 HV1337  HISTORY     - 1944     GOOD             WSSC
 HV1337
 HV1337                          STATION DESCRIPTION
 HV1337
 HV1337'DESCRIBED BY WASH SUBURB SAN COMM 1944
 HV1337'0.2 MI NE FROM MD DC LINE.
 HV1337'ON THE PENNSYLVANIA RAILROAD FREIGHT LINE, 250 FEET SOUTHEAST
 HV1337'ACROSS THE TRACKS FROM A FRAME HOUSE, 225 FEET NORTH OF OLD
 HV1337'CHAPEL ROAD, 50 FEET SOUTHEAST OF THE FREIGHT LINE SIDING, AND ON
 HV1337'THE TOP OF A RAILROAD BANK. BRASS SCREW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0569 ***********************************************************************
 HV0569  DESIGNATION -  98.3 USGS
 HV0569  PID         -  HV0569
 HV0569  STATE/COUNTY-  MD/ST MARYS
 HV0569  COUNTRY     -  US
 HV0569  USGS QUAD   -  PINEY POINT (2016)
 HV0569
 HV0569                         *CURRENT SURVEY CONTROL
 HV0569  ______________________________________________________________________
 HV0569* NAD 83(1986) POSITION- 38 14 19.     (N) 076 32 24.     (W)   SCALED
 HV0569* NAVD 88 ORTHO HEIGHT -    29.589 (meters)       97.08  (feet) ADJUSTED
 HV0569  ______________________________________________________________________
 HV0569  GEOID HEIGHT    -        -34.297 (meters)                     GEOID18
 HV0569  DYNAMIC HEIGHT  -         29.571 (meters)       97.02  (feet) COMP
 HV0569  MODELED GRAVITY -    980,001.4   (mgal)                       NAVD 88
 HV0569
 HV0569  VERT ORDER      -  FIRST     CLASS II
 HV0569
 HV0569.The horizontal coordinates were scaled from a map and have
 HV0569.an estimated accuracy of +/- 6 seconds.
 HV0569
 HV0569.The orthometric height was determined by differential leveling and
 HV0569.adjusted by the NATIONAL GEODETIC SURVEY
 HV0569.in June 1991.
 HV0569
 HV0569.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0569.GEOID18 height accuracy estimate available here.
 HV0569
 HV0569.Click photographs - Photos may exist for this station.
 HV0569
 HV0569.The dynamic height is computed by dividing the NAVD 88
 HV0569.geopotential number by the normal gravity value computed on the
 HV0569.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0569.degrees latitude (g = 980.6199 gals.).
 HV0569
 HV0569.The modeled gravity was interpolated from observed gravity values.
 HV0569
 HV0569;                    North         East    Units  Estimated Accuracy
 HV0569;SPC MD       -    63,590.      440,270.      MT  (+/- 180 meters Scaled)
 HV0569
 HV0569_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH652334(NAD 83)
 HV0569
 HV0569                          SUPERSEDED SURVEY CONTROL
 HV0569
 HV0569  NGVD 29 (11/26/84)   29.923  (m)           98.17   (f) ADJUSTED    1 2
 HV0569
 HV0569.Superseded values are not recommended for survey control.
 HV0569
 HV0569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0569.See file dsdata.pdf to determine how the superseded data were derived.
 HV0569
 HV0569_MARKER: Q = CHISELED SQUARE
 HV0569_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0569_SP_SET: CULVERT
 HV0569_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0569
 HV0569  HISTORY     - Date     Condition        Report By
 HV0569  HISTORY     - UNK      MONUMENTED       USGS
 HV0569  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0569
 HV0569                          STATION DESCRIPTION
 HV0569
 HV0569'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0569'2.9 MI NW FROM GREAT MILLS.
 HV0569'2.9 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST OFFICE
 HV0569'AT GREAT MILLS, SAINT MARYS COUNTY, 45.5 FEET SOUTHEAST OF AN
 HV0569'18-INCH PINE TREE MARKED WITH A TRIANGULAR BLAZE, 28 FEET SOUTH
 HV0569'OF POWER-TRANSMISSION LINE POLE 208, AT A 2- BY 2-FOOT CONCRETE
 HV0569'CULVERT, ON THE CENTER OF THE TOP OF THE SOUTH HEAD WALL, 12 FEET
 HV0569'SOUTH OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 1.5 FEET
 HV0569'HIGHER THAN THE HIGHWAY.  A CHISELED SQUARE, MARKED 98.3.
 HV0569'NOTE-- HIGHWAY HAS BEEN WIDENED.  NO CULVERT REMAINS AT THE
 HV0569'DESCRIBED AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0362 ***********************************************************************
 HV0362  DESIGNATION -  99.9 USGS
 HV0362  PID         -  HV0362
 HV0362  STATE/COUNTY-  MD/CALVERT
 HV0362  COUNTRY     -  US
 HV0362  USGS QUAD   -  COVE POINT (2016)
 HV0362
 HV0362                         *CURRENT SURVEY CONTROL
 HV0362  ______________________________________________________________________
 HV0362* NAD 83(1986) POSITION- 38 27 11.     (N) 076 29 34.     (W)   SCALED
 HV0362* NAVD 88 ORTHO HEIGHT -    30.160 (meters)       98.95  (feet) ADJUSTED
 HV0362  ______________________________________________________________________
 HV0362  GEOID HEIGHT    -        -34.197 (meters)                     GEOID18
 HV0362  DYNAMIC HEIGHT  -         30.141 (meters)       98.89  (feet) COMP
 HV0362  MODELED GRAVITY -    980,019.8   (mgal)                       NAVD 88
 HV0362
 HV0362  VERT ORDER      -  FIRST     CLASS II
 HV0362
 HV0362.The horizontal coordinates were scaled from a map and have
 HV0362.an estimated accuracy of +/- 6 seconds.
 HV0362
 HV0362.The orthometric height was determined by differential leveling and
 HV0362.adjusted by the NATIONAL GEODETIC SURVEY
 HV0362.in June 1991.
 HV0362
 HV0362.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0362.GEOID18 height accuracy estimate available here.
 HV0362
 HV0362.Click photographs - Photos may exist for this station.
 HV0362
 HV0362.The dynamic height is computed by dividing the NAVD 88
 HV0362.geopotential number by the normal gravity value computed on the
 HV0362.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0362.degrees latitude (g = 980.6199 gals.).
 HV0362
 HV0362.The modeled gravity was interpolated from observed gravity values.
 HV0362
 HV0362;                    North         East    Units  Estimated Accuracy
 HV0362;SPC MD       -    87,420.      444,270.      MT  (+/- 180 meters Scaled)
 HV0362
 HV0362_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH697571(NAD 83)
 HV0362
 HV0362                          SUPERSEDED SURVEY CONTROL
 HV0362
 HV0362  NGVD 29 (11/26/84)   30.451  (m)           99.90   (f) ADJUSTED    1 2
 HV0362
 HV0362.Superseded values are not recommended for survey control.
 HV0362
 HV0362.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0362.See file dsdata.pdf to determine how the superseded data were derived.
 HV0362
 HV0362_MARKER: N = NAIL
 HV0362_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0362_SP_SET: TREE ROOT
 HV0362_STAMPING: 99.9
 HV0362_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0362
 HV0362  HISTORY     - Date     Condition        Report By
 HV0362  HISTORY     - UNK      MONUMENTED       USGS
 HV0362  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0362
 HV0362                          STATION DESCRIPTION
 HV0362
 HV0362'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0362'11.5 MI N FROM SOLOMONS.
 HV0362'11.5 MILES NORTH ALONG STATE HIGHWAY 2 FROM THE GOVERNMENT
 HV0362'BIOLOGICAL LABORATORY BUILDING AT SOLOMONS, CALVERT COUNTY, AT
 HV0362'THE SOUTH CORNER OF A LARGE TWO-STORY FARMHOUSE, 24 FEET NORTHWEST
 HV0362'OF POLE 227 A, 12 FEET SOUTHEAST OF THE CENTER LINE OF A PRIVATE
 HV0362'DRIVEWAY THROUGH A GATE, 28.8 FEET NORTHEAST OF THE CENTER LINE
 HV0362'OF THE HIGHWAY, IN THE SOUTH ROOT OF A 24-INCH PERSIMMON TREE,
 HV0362'AND 6 FEET NORTHEAST OF A WHITE WOODEN WITNESS POST.  A UNITED
 HV0362'STATES GEOLOGICAL SURVEY STANDARD COPPER NAIL AND WASHER, STAMPED
 HV0362'99.9.  NOTE-- THE TREE HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV3960 ***********************************************************************
 HV3960  DESIGNATION -  994 WSSC
 HV3960  PID         -  HV3960
 HV3960  STATE/COUNTY-  MD/MONTGOMERY
 HV3960  COUNTRY     -  US
 HV3960  USGS QUAD   -  WASHINGTON WEST (2016)
 HV3960
 HV3960                         *CURRENT SURVEY CONTROL
 HV3960  ______________________________________________________________________
 HV3960* NAD 83(1986) POSITION- 38 59 38.     (N) 077 01 53.     (W)   SCALED
 HV3960* NAVD 88 ORTHO HEIGHT -    92.84  (+/-2cm)      304.6   (feet) VERTCON3
 HV3960  ______________________________________________________________________
 HV3960  GEOID HEIGHT    -        -31.966 (meters)                     GEOID18
 HV3960  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV3960
 HV3960.The horizontal coordinates were scaled from a map and have
 HV3960.an estimated accuracy of +/- 6 seconds.
 HV3960
 HV3960.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV3960.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV3960
 HV3960.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV3960.GEOID18 height accuracy estimate available here.
 HV3960
 HV3960.The vertical order pertains to the NGVD 29 superseded value.
 HV3960
 HV3960.Click photographs - Photos may exist for this station.
 HV3960
 HV3960;                    North         East    Units  Estimated Accuracy
 HV3960;SPC MD       -   147,330.      397,280.      MT  (+/- 180 meters Scaled)
 HV3960
 HV3960_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ240180(NAD 83)
 HV3960
 HV3960                          SUPERSEDED SURVEY CONTROL
 HV3960
 HV3960  NGVD 29 (11/26/84)   93.054  (m)          305.29   (f) ADJUSTED    2 0
 HV3960
 HV3960.Superseded values are not recommended for survey control.
 HV3960
 HV3960.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV3960.See file dsdata.pdf to determine how the superseded data were derived.
 HV3960
 HV3960_MARKER: B = BOLT
 HV3960_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV3960_SP_SET: BRIDGE
 HV3960_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV3960
 HV3960  HISTORY     - Date     Condition        Report By
 HV3960  HISTORY     - UNK      MONUMENTED       WSSC
 HV3960  HISTORY     - 1944     GOOD             CGS
 HV3960
 HV3960                          STATION DESCRIPTION
 HV3960
 HV3960'DESCRIBED BY COAST AND GEODETIC SURVEY 1944
 HV3960'AT SILVER SPRING.
 HV3960'AT THE BALTIMORE AND OHIO RAILROAD BRIDGE OVER COLESVILLE ROAD,
 HV3960'AND ON THE TOP OF THE EAST END OF THE SOUTHEAST RETAINING WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3199 ***********************************************************************
 JV3199  DESIGNATION -  A
 JV3199  PID         -  JV3199
 JV3199  STATE/COUNTY-  MD/WASHINGTON
 JV3199  COUNTRY     -  US
 JV3199  USGS QUAD   -  HAGERSTOWN (2016)
 JV3199
 JV3199                         *CURRENT SURVEY CONTROL
 JV3199  ______________________________________________________________________
 JV3199* NAD 83(1986) POSITION- 39 38 34.3    (N) 077 43 21.8    (W)   HD_HELD2
 JV3199* NAVD 88 ORTHO HEIGHT -   168.122 (meters)      551.58  (feet) ADJUSTED
 JV3199  ______________________________________________________________________
 JV3199  GEOID HEIGHT    -        -34.156 (meters)                     GEOID18
 JV3199  DYNAMIC HEIGHT  -        168.022 (meters)      551.25  (feet) COMP
 JV3199  MODELED GRAVITY -    980,033.9   (mgal)                       NAVD 88
 JV3199
 JV3199  VERT ORDER      -  FIRST     CLASS II
 JV3199
 JV3199.The horizontal coordinates were established by autonomous hand held GPS
 JV3199.observations and have an estimated accuracy of +/- 10 meters.
 JV3199
 JV3199.The orthometric height was determined by differential leveling and
 JV3199.adjusted by the NATIONAL GEODETIC SURVEY
 JV3199.in June 1991.
 JV3199
 JV3199.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3199.GEOID18 height accuracy estimate available here.
 JV3199
 JV3199.Click photographs - Photos may exist for this station.
 JV3199
 JV3199.The dynamic height is computed by dividing the NAVD 88
 JV3199.geopotential number by the normal gravity value computed on the
 JV3199.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3199.degrees latitude (g = 980.6199 gals.).
 JV3199
 JV3199.The modeled gravity was interpolated from observed gravity values.
 JV3199
 JV3199;                    North         East    Units  Estimated Accuracy
 JV3199;SPC MD       -   219,622.      337,962.      MT  (+/- 10 meters HH2 GPS)
 JV3199
 JV3199_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6636691662(NAD 83)
 JV3199
 JV3199                          SUPERSEDED SURVEY CONTROL
 JV3199
 JV3199  NGVD 29 (11/26/84)  168.326  (m)          552.25   (f) ADJUSTED    1 2
 JV3199
 JV3199.Superseded values are not recommended for survey control.
 JV3199
 JV3199.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3199.See file dsdata.pdf to determine how the superseded data were derived.
 JV3199
 JV3199_MARKER: Q = CHISELED SQUARE
 JV3199_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3199_SP_SET: BUILDING
 JV3199_STAMPING: A BM USCS OCT 1877
 JV3199_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3199_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3199+SATELLITE: SATELLITE OBSERVATIONS - July 12, 2008
 JV3199
 JV3199  HISTORY     - Date     Condition        Report By
 JV3199  HISTORY     - 1877     MONUMENTED       COASUR
 JV3199  HISTORY     - 1975     GOOD             NGS
 JV3199  HISTORY     - 1979     GOOD             NGS
 JV3199  HISTORY     - 1986     GOOD             USPSQD
 JV3199  HISTORY     - 19900101 GOOD             NGS
 JV3199  HISTORY     - 20050823 GOOD             GEOCAC
 JV3199  HISTORY     - 20070318 GOOD             GEOCAC
 JV3199  HISTORY     - 20080712 GOOD             NGS
 JV3199
 JV3199                          STATION DESCRIPTION
 JV3199
 JV3199'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 JV3199'AT HAGERSTOWN.
 JV3199'CUT ON THE WATER TABLE (RED SAND STONE) OF THE WASHINGTON COUNTY
 JV3199'COURTHOUSE WHICH STANDS AT THE INTERSECTION OF WASHINGTON STREET AND
 JV3199'SUMMIT AVE. APPROXIMATELY 12 METERS SOUTH OF THE NORTHWEST CORNER OF
 JV3199'THE BUILDING, ON THE WEST SIDE OF THE BUILDING (FACING SUMMIT AVE.)
 JV3199'THE MARK IS A SQUARE CUT ON THE HORIZONTAL FACE OF THE WATER TABLE
 JV3199'LETTERS 'U.S.C.S.' AND 'OCT. 1877' ARE CUT ON THE VERTICAL STONE FACE
 JV3199'IMMEDIATELY BELOW THE BENCH MARK.
 JV3199
 JV3199                          STATION RECOVERY (1979)
 JV3199
 JV3199'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3199'RECOVERED IN GOOD CONDITION.
 JV3199
 JV3199                          STATION RECOVERY (1986)
 JV3199
 JV3199'RECOVERY NOTE BY US POWER SQUADRON 1986 (WPG)
 JV3199'RECOVERED IN GOOD CONDITION.
 JV3199
 JV3199                          STATION RECOVERY (1990)
 JV3199
 JV3199'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990 (DW)
 JV3199'HISTORIC NOTE.  THIS IS THE FIRST BENCH MARK SET BY US COAST SURVEY
 JV3199'(LATER US C+GS AND NGS) IN ITS FIRST INLAND ELEVATION SURVEY FROM
 JV3199'WASHINGTON TO HAGARSTOWN ALONG THE C+O CANAL.
 JV3199
 JV3199                          STATION RECOVERY (2005)
 JV3199
 JV3199'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 JV3199'RECOVERED IN GOOD CONDITION.
 JV3199
 JV3199                          STATION RECOVERY (2007)
 JV3199
 JV3199'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV3199'RECOVERED IN GOOD CONDITION.
 JV3199
 JV3199                          STATION RECOVERY (2008)
 JV3199
 JV3199'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008
 JV3199'RECOVERED AS DESCRIBED IN GOOD CONDITION.  DROVE RIGHT TO THE MARK
 JV3199'AFTER ENTERING THE LATITUDE AND LONGITUDE INTO A CAR GPS SYSTEM.  THE
 JV3199'MARK IS IN THE WALL OF A BUILDING WHICH MIGHT LIMIT SATELLITE
 JV3199'OBSERVATIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0815 ***********************************************************************
 HV0815  DESIGNATION -  A 1
 HV0815  PID         -  HV0815
 HV0815  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0815  COUNTRY     -  US
 HV0815  USGS QUAD   -  BRANDYWINE (2016)
 HV0815
 HV0815                         *CURRENT SURVEY CONTROL
 HV0815  ______________________________________________________________________
 HV0815* NAD 83(1986) POSITION- 38 44 54.64   (N) 076 47 53.17   (W)   HD_HELD1
 HV0815* NAVD 88 ORTHO HEIGHT -    62.525 (meters)      205.13  (feet) ADJUSTED
 HV0815  ______________________________________________________________________
 HV0815  GEOID HEIGHT    -        -32.921 (meters)                     GEOID18
 HV0815  DYNAMIC HEIGHT  -         62.489 (meters)      205.02  (feet) COMP
 HV0815  MODELED GRAVITY -    980,055.1   (mgal)                       NAVD 88
 HV0815
 HV0815  VERT ORDER      -  FIRST     CLASS II
 HV0815
 HV0815.The horizontal coordinates were determined by differentially corrected
 HV0815.hand held GPS observations or other comparable positioning techniques
 HV0815.and have an estimated accuracy of +/- 3 meters.
 HV0815
 HV0815.The orthometric height was determined by differential leveling and
 HV0815.adjusted by the NATIONAL GEODETIC SURVEY
 HV0815.in June 1991.
 HV0815
 HV0815.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0815.GEOID18 height accuracy estimate available here.
 HV0815
 HV0815.Click photographs - Photos may exist for this station.
 HV0815
 HV0815.The dynamic height is computed by dividing the NAVD 88
 HV0815.geopotential number by the normal gravity value computed on the
 HV0815.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0815.degrees latitude (g = 980.6199 gals.).
 HV0815
 HV0815.The modeled gravity was interpolated from observed gravity values.
 HV0815
 HV0815;                    North         East    Units  Estimated Accuracy
 HV0815;SPC MD       -   120,108.4     417,550.5     MT  (+/- 3 meters HH1 GPS) 
 HV0815
 HV0815_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4374390404(NAD 83)
 HV0815
 HV0815                          SUPERSEDED SURVEY CONTROL
 HV0815
 HV0815  NGVD 29 (11/26/84)   62.755  (m)          205.89   (f) ADJUSTED    1 2
 HV0815
 HV0815.Superseded values are not recommended for survey control.
 HV0815
 HV0815.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0815.See file dsdata.pdf to determine how the superseded data were derived.
 HV0815
 HV0815_MARKER: DB = BENCH MARK DISK
 HV0815_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0815_STAMPING: A 1 1917
 HV0815_MARK LOGO: CGS
 HV0815_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0815+STABILITY: SURFACE MOTION
 HV0815
 HV0815  HISTORY     - Date     Condition        Report By
 HV0815  HISTORY     - 1917     MONUMENTED       CGS
 HV0815
 HV0815                          STATION DESCRIPTION
 HV0815
 HV0815'DESCRIBED BY COAST AND GEODETIC SURVEY 1917
 HV0815'1.2 MI SE FROM ROSARYVILLE.
 HV0815'ABOUT 0.35 MILE SOUTH ALONG OLD INDIAN HEAD ROAD FROM THE
 HV0815'CROSSING OF U.S. HIGHWAY 301 AT ROSARYVILLE, THENCE 0.85 MILE
 HV0815'SOUTHEAST ALONG DULEY STATION ROAD, AT THE CROSSING OF THE
 HV0815'PENNSYLVANIA RAILROAD AND DULEY STATION ROAD, 214 FEET SOUTHWEST
 HV0815'OF THE CENTER OF THE CROSSING OF THE ROAD AND THE TRACK, 11.6
 HV0815'FEET NORTHWEST OF THE NORTHWEST RAIL, 1.3 FEET SOUTHWEST OF A
 HV0815'METAL WITNESS POST, 1 FOOT ABOVE THE LEVEL OF THE TRACK AND SET
 HV0815'IN THE TOP OF A CONCRETE POST ABOUT 6 INCHES BELOW THE LEVEL OF
 HV0815'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0193 ***********************************************************************
 JV0193  DESIGNATION -  A 100
 JV0193  PID         -  JV0193
 JV0193  STATE/COUNTY-  MD/HARFORD
 JV0193  COUNTRY     -  US
 JV0193  USGS QUAD   -  BEL AIR (2016)
 JV0193
 JV0193                         *CURRENT SURVEY CONTROL
 JV0193  ______________________________________________________________________
 JV0193* NAD 83(1986) POSITION- 39 32 13.5    (N) 076 20 35.0    (W)   HD_HELD2
 JV0193* NAVD 88 ORTHO HEIGHT -   117.459 (meters)      385.36  (feet) ADJUSTED
 JV0193  ______________________________________________________________________
 JV0193  GEOID HEIGHT    -        -32.783 (meters)                     GEOID18
 JV0193  DYNAMIC HEIGHT  -        117.399 (meters)      385.17  (feet) COMP
 JV0193  MODELED GRAVITY -    980,119.1   (mgal)                       NAVD 88
 JV0193
 JV0193  VERT ORDER      -  FIRST     CLASS II
 JV0193
 JV0193.The horizontal coordinates were established by autonomous hand held GPS
 JV0193.observations and have an estimated accuracy of +/- 10 meters.
 JV0193
 JV0193.The orthometric height was determined by differential leveling and
 JV0193.adjusted by the NATIONAL GEODETIC SURVEY
 JV0193.in June 1991.
 JV0193
 JV0193.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0193.GEOID18 height accuracy estimate available here.
 JV0193
 JV0193.Click photographs - Photos may exist for this station.
 JV0193
 JV0193.The dynamic height is computed by dividing the NAVD 88
 JV0193.geopotential number by the normal gravity value computed on the
 JV0193.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0193.degrees latitude (g = 980.6199 gals.).
 JV0193
 JV0193.The modeled gravity was interpolated from observed gravity values.
 JV0193
 JV0193;                    North         East    Units  Estimated Accuracy
 JV0193;SPC MD       -   207,835.      456,476.      MT  (+/- 10 meters HH2 GPS)
 JV0193
 JV0193_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8458477241(NAD 83)
 JV0193
 JV0193                          SUPERSEDED SURVEY CONTROL
 JV0193
 JV0193  NGVD 29 (11/26/84)  117.701  (m)          386.16   (f) ADJUSTED    1 2
 JV0193
 JV0193.Superseded values are not recommended for survey control.
 JV0193
 JV0193.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0193.See file dsdata.pdf to determine how the superseded data were derived.
 JV0193
 JV0193_MARKER: DB = BENCH MARK DISK
 JV0193_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0193_STAMPING: A 100 1960
 JV0193_MARK LOGO: CGS
 JV0193_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0193+STABILITY: SURFACE MOTION
 JV0193_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0193+SATELLITE: SATELLITE OBSERVATIONS - October 23, 1989
 JV0193
 JV0193  HISTORY     - Date     Condition        Report By
 JV0193  HISTORY     - 1960     MONUMENTED       CGS
 JV0193  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV0193  HISTORY     - 19891023 GOOD             NGS
 JV0193  HISTORY     - 19991226 GOOD             USPSQD
 JV0193
 JV0193                          STATION DESCRIPTION
 JV0193
 JV0193'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0193'AT BEL AIR.
 JV0193'AT BEL AIR, ABOUT 0.4 MILE NORTHEAST ALONG STATE HIGHWAY 22 FROM
 JV0193'THE COURTHOUSE, ABOUT 0.3 MILE NORTHEAST OF THE INTERSECTION OF
 JV0193'STATE HIGHWAY 24, AT THE EAST CITY LIMITS, 24 FEET SOUTHEAST OF
 JV0193'THE CENTER LINE OF THE HIGHWAY, 98.9 FEET NORTHEAST OF THE
 JV0193'NORTHEAST CORNER OF THE EAST WING OF ST. MATTHEW LUTHERN CHURCH,
 JV0193'2 1/2 FEET NORTH OF POWER LINE POLE 12, 23.9 FEET NORTHEAST OF A
 JV0193'5-INCH ASH TREE, ABOUT 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY,
 JV0193'AND SET IN TOP OF A CONCRETE POST.
 JV0193
 JV0193                          STATION RECOVERY (1987)
 JV0193
 JV0193'RECOVERY NOTE BY US POWER SQUADRON 1987 (RB)
 JV0193'MARK NOT FOUND.
 JV0193
 JV0193                          STATION RECOVERY (1989)
 JV0193
 JV0193'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0193'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN BEL AIR,
 JV0193'AT 405 EAST CHURCHVILLE ROAD, 27.1 M (88.9 FT) NORTH OF THE NORTH
 JV0193'CORNER OF A HOUSE AT 405 EAST CHURCHVILLE ROAD, 25.9 M (85.0 FT)
 JV0193'NORTHEAST OF THE CENTER OF THE DRIVEWAY, 7.3 M (24.0 FT) SOUTHEAST OF
 JV0193'THE CENTERLINE OF THE ROAD, 0.8 M (2.6 FT) NORTHWEST OF UTILITY POLE
 JV0193'NUMBER 12, 0.5 M (1.6 FT) ABOVE THE LEVEL OF THE ROAD, AND IN A
 JV0193'CONCRETE MONUMENT THAT PROJECTS 0.1 M (0.3 FT) ABOVE THE GROUND
 JV0193'SURFACE.
 JV0193
 JV0193                          STATION RECOVERY (1999)
 JV0193
 JV0193'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV0193'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1832 ***********************************************************************
 JU1832  DESIGNATION -  A 103
 JU1832  PID         -  JU1832
 JU1832  STATE/COUNTY-  MD/CECIL
 JU1832  COUNTRY     -  US
 JU1832  USGS QUAD   -  ELKTON (2016)
 JU1832
 JU1832                         *CURRENT SURVEY CONTROL
 JU1832  ______________________________________________________________________
 JU1832* NAD 83(1986) POSITION- 39 31 28.5    (N) 075 48 58.3    (W)   HD_HELD2
 JU1832* NAVD 88 ORTHO HEIGHT -     3.820 (meters)       12.53  (feet) ADJUSTED
 JU1832  ______________________________________________________________________
 JU1832  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 JU1832  DYNAMIC HEIGHT  -          3.818 (meters)       12.53  (feet) COMP
 JU1832  MODELED GRAVITY -    980,130.5   (mgal)                       NAVD 88
 JU1832
 JU1832  VERT ORDER      -  FIRST     CLASS I
 JU1832
 JU1832.The horizontal coordinates were established by autonomous hand held GPS
 JU1832.observations and have an estimated accuracy of +/- 10 meters.
 JU1832
 JU1832.The orthometric height was determined by differential leveling and
 JU1832.adjusted by the NATIONAL GEODETIC SURVEY
 JU1832.in June 1991.
 JU1832
 JU1832.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1832.GEOID18 height accuracy estimate available here.
 JU1832
 JU1832.Click photographs - Photos may exist for this station.
 JU1832
 JU1832.The dynamic height is computed by dividing the NAVD 88
 JU1832.geopotential number by the normal gravity value computed on the
 JU1832.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1832.degrees latitude (g = 980.6199 gals.).
 JU1832
 JU1832.The modeled gravity was interpolated from observed gravity values.
 JU1832
 JU1832;                    North         East    Units  Estimated Accuracy
 JU1832;SPC MD       -   206,904.      501,786.      MT  (+/- 10 meters HH2 GPS)
 JU1832
 JU1832_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2984875310(NAD 83)
 JU1832
 JU1832                          SUPERSEDED SURVEY CONTROL
 JU1832
 JU1832  NGVD 29 (11/26/84)    4.055  (m)           13.30   (f) ADJUSTED    1 1
 JU1832
 JU1832.Superseded values are not recommended for survey control.
 JU1832
 JU1832.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1832.See file dsdata.pdf to determine how the superseded data were derived.
 JU1832
 JU1832_MARKER: DB = BENCH MARK DISK
 JU1832_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JU1832_SP_SET: CULVERT HEADWALL
 JU1832_STAMPING: A 103 1961
 JU1832_MARK LOGO: CGS
 JU1832_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1832+STABILITY: SURFACE MOTION
 JU1832_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1832+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2014
 JU1832
 JU1832  HISTORY     - Date     Condition        Report By
 JU1832  HISTORY     - 1961     MONUMENTED       CGS
 JU1832  HISTORY     - 1971     GOOD             NGS
 JU1832  HISTORY     - 20140311 GOOD             ARCSHE
 JU1832
 JU1832                          STATION DESCRIPTION
 JU1832
 JU1832'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1832'AT CHESAPEAKE CITY.
 JU1832'AT CHESAPEAKE CITY, ABOUT 0.05 NORTHEAST ALONG STATE HIGHWAY
 JU1832'286 FROM THE SOUTHWEST END OF THE U.S. HIGHWAY 213 BRIDGE OVER
 JU1832'THE CHESAPEAKE AND DEALWARE CANAL, SET IN THE TOP OF THE
 JU1832'SOUTHWEST END OF THE NORTHWEST CONCRETE HEADWALL OF TWO 3-FOOT
 JU1832'CONCRETE TUBULAR CULVERTS WITH WING WALLS, 26 FEET NORTHWEST
 JU1832'OF THE CENTER LINE OF THE HIGHWAY, 17.6 FEET SOUTH OF THE SOUTH
 JU1832'CORNER OF THE 5TH CONCRETE PIER NORTHEAST OF THE SOUTHWEST END
 JU1832'OF THE BRIDGE, AND ABOUT 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
 JU1832
 JU1832                          STATION RECOVERY (2014)
 JU1832
 JU1832'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JU1832'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0371 ***********************************************************************
 HU0371  DESIGNATION -  A 104
 HU0371  PID         -  HU0371
 HU0371  STATE/COUNTY-  MD/WORCESTER
 HU0371  COUNTRY     -  US
 HU0371  USGS QUAD   -  OCEAN CITY (2016)
 HU0371
 HU0371                         *CURRENT SURVEY CONTROL
 HU0371  ______________________________________________________________________
 HU0371* NAD 83(1986) POSITION- 38 22 22.     (N) 075 04 12.     (W)   SCALED
 HU0371* NAVD 88 ORTHO HEIGHT -     1.241 (meters)        4.07  (feet) ADJUSTED
 HU0371  ______________________________________________________________________
 HU0371  GEOID HEIGHT    -        -36.017 (meters)                     GEOID18
 HU0371  DYNAMIC HEIGHT  -          1.240 (meters)        4.07  (feet) COMP
 HU0371  MODELED GRAVITY -    980,012.0   (mgal)                       NAVD 88
 HU0371
 HU0371  VERT ORDER      -  SECOND    CLASS 0
 HU0371
 HU0371.The horizontal coordinates were scaled from a map and have
 HU0371.an estimated accuracy of +/- 6 seconds.
 HU0371
 HU0371.The orthometric height was determined by differential leveling and
 HU0371.adjusted by the NATIONAL GEODETIC SURVEY
 HU0371.in June 1991.
 HU0371
 HU0371.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0371.GEOID18 height accuracy estimate available here.
 HU0371
 HU0371.Click photographs - Photos may exist for this station.
 HU0371
 HU0371.The dynamic height is computed by dividing the NAVD 88
 HU0371.geopotential number by the normal gravity value computed on the
 HU0371.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0371.degrees latitude (g = 980.6199 gals.).
 HU0371
 HU0371.The modeled gravity was interpolated from observed gravity values.
 HU0371
 HU0371;                    North         East    Units  Estimated Accuracy
 HU0371;SPC MD       -    80,160.      568,640.      MT  (+/- 180 meters Scaled)
 HU0371
 HU0371_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH938471(NAD 83)
 HU0371
 HU0371                          SUPERSEDED SURVEY CONTROL
 HU0371
 HU0371  NGVD 29 (11/26/84)    1.495  (m)            4.90   (f) ADJUSTED    2 0
 HU0371
 HU0371.Superseded values are not recommended for survey control.
 HU0371
 HU0371.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0371.See file dsdata.pdf to determine how the superseded data were derived.
 HU0371
 HU0371_MARKER: DB = BENCH MARK DISK
 HU0371_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HU0371_STAMPING: A 104 1962
 HU0371_MARK LOGO: CGS
 HU0371_PROJECTION: PROJECTING 5 CENTIMETERS
 HU0371_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0371
 HU0371  HISTORY     - Date     Condition        Report By
 HU0371  HISTORY     - 1962     MONUMENTED       CGS
 HU0371  HISTORY     - 1975     MARK NOT FOUND   NGS
 HU0371  HISTORY     - 1988     MARK NOT FOUND   USPSQD
 HU0371  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU0371
 HU0371                          STATION DESCRIPTION
 HU0371
 HU0371'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0371'2.6 MI N FROM OCEAN CITY.
 HU0371'2.6 MILES NORTH ON STATE HIGHWAY 528 FROM THE POST OFFICE IN
 HU0371'OCEAN CITY.  65 FEET WEST OF THE CENTER LINE OF STATE HIGHWAY 528,
 HU0371'19 FEET SOUTH OF THE PROLONGED CENTER LINE OF 47TH STREET IN NORTH
 HU0371'OCEAN CITY, 15.6 FEET EAST OF THE EAST END OF A CONCRETE BLOCK
 HU0371'WALL EXTENDING FROM A GARAGE AT A DRIVE-IN SANDWICH SHOP, 2.5 FEET
 HU0371'WEST OF POWER LINE POLE NO. 1068 T 94 AND ABOUT LEVEL WITH THE
 HU0371'HIGHWAY.  SET IN THE TOP OF A 10 INCH TILE FILLED WITH CONCRETE
 HU0371'PROJECTING 2 INCHES.
 HU0371
 HU0371                          STATION RECOVERY (1975)
 HU0371
 HU0371'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HU0371'MARK NOT FOUND.
 HU0371
 HU0371                          STATION RECOVERY (1988)
 HU0371
 HU0371'RECOVERY NOTE BY US POWER SQUADRON 1988 (CAC)
 HU0371'MARK NOT FOUND.
 HU0371
 HU0371                          STATION RECOVERY (2003)
 HU0371
 HU0371'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0371'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0551 ***********************************************************************
 HU0551  DESIGNATION -  A 105
 HU0551  PID         -  HU0551
 HU0551  STATE/COUNTY-  MD/WICOMICO
 HU0551  COUNTRY     -  US
 HU0551  USGS QUAD   -  WETIPQUIN (2016)
 HU0551
 HU0551                         *CURRENT SURVEY CONTROL
 HU0551  ______________________________________________________________________
 HU0551* NAD 83(1986) POSITION- 38 18 53.     (N) 075 46 12.     (W)   SCALED
 HU0551* NAVD 88 ORTHO HEIGHT -     2.099 (meters)        6.89  (feet) ADJUSTED
 HU0551  ______________________________________________________________________
 HU0551  GEOID HEIGHT    -        -35.786 (meters)                     GEOID18
 HU0551  DYNAMIC HEIGHT  -          2.097 (meters)        6.88  (feet) COMP
 HU0551  MODELED GRAVITY -    979,998.4   (mgal)                       NAVD 88
 HU0551
 HU0551  VERT ORDER      -  FIRST     CLASS I
 HU0551
 HU0551.The horizontal coordinates were scaled from a map and have
 HU0551.an estimated accuracy of +/- 6 seconds.
 HU0551
 HU0551.The orthometric height was determined by differential leveling and
 HU0551.adjusted by the NATIONAL GEODETIC SURVEY
 HU0551.in June 1991.
 HU0551
 HU0551.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0551.GEOID18 height accuracy estimate available here.
 HU0551
 HU0551.Click photographs - Photos may exist for this station.
 HU0551
 HU0551.The dynamic height is computed by dividing the NAVD 88
 HU0551.geopotential number by the normal gravity value computed on the
 HU0551.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0551.degrees latitude (g = 980.6199 gals.).
 HU0551
 HU0551.The modeled gravity was interpolated from observed gravity values.
 HU0551
 HU0551;                    North         East    Units  Estimated Accuracy
 HU0551;SPC MD       -    72,660.      507,570.      MT  (+/- 180 meters Scaled)
 HU0551
 HU0551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH326410(NAD 83)
 HU0551
 HU0551                          SUPERSEDED SURVEY CONTROL
 HU0551
 HU0551  NGVD 29 (11/26/84)    2.353  (m)            7.72   (f) ADJUSTED    1 1
 HU0551
 HU0551.Superseded values are not recommended for survey control.
 HU0551
 HU0551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0551.See file dsdata.pdf to determine how the superseded data were derived.
 HU0551
 HU0551_MARKER: DB = BENCH MARK DISK
 HU0551_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0551_SP_SET: BRIDGE
 HU0551_STAMPING: A 105 1963
 HU0551_MARK LOGO: CGS
 HU0551_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0551
 HU0551  HISTORY     - Date     Condition        Report By
 HU0551  HISTORY     - 1963     MONUMENTED       CGS
 HU0551
 HU0551                          STATION DESCRIPTION
 HU0551
 HU0551'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0551'3.8 MI NE FROM WHITEHAVEN.
 HU0551'3.8 MILES NORTHEAST ALONG STATE HIGHWAY 352 FROM THE FERRY
 HU0551'LANDING AT WHITEHAVEN, ABOUT 0.5 MILE NORTHEAST OF A BLACK TOP
 HU0551'ROAD INTERSECTION LEADING NORTHWEST AND SOUTHEAST AT THE COMMUNITY
 HU0551'OF GREEN HILL, AT THE EAST CORNER OF THE HIGHWAY BRIDGE OVER GREEN
 HU0551'HILL CREEK, ON TOP OF GUARD RAIL BASE, 15 FEET SOUTHEAST OF CENTER
 HU0551'LINE OF HIGHWAY, 2 FEET SOUTHWEST OF EAST CORNER OF BRIDGE, AND
 HU0551'ABOUT 1 FOOT ABOVE LEVEL OF HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2662 ***********************************************************************
 HU2662  DESIGNATION -  A 105 RESET
 HU2662  PID         -  HU2662
 HU2662  STATE/COUNTY-  MD/WICOMICO
 HU2662  COUNTRY     -  US
 HU2662  USGS QUAD   -  WETIPQUIN (2016)
 HU2662
 HU2662                         *CURRENT SURVEY CONTROL
 HU2662  ______________________________________________________________________
 HU2662* NAD 83(1986) POSITION- 38 18 53.     (N) 075 46 12.     (W)   SCALED
 HU2662* NAVD 88 ORTHO HEIGHT -     2.00  (meters)        6.6   (feet) RESET
 HU2662  ______________________________________________________________________
 HU2662  GEOID HEIGHT    -        -35.786 (meters)                     GEOID18
 HU2662  VERT ORDER      -  THIRD
 HU2662
 HU2662.The horizontal coordinates were scaled from a map and have
 HU2662.an estimated accuracy of +/- 6 seconds.
 HU2662
 HU2662.The orthometric height was computed from unverified reset data.
 HU2662
 HU2662.No vertical observational check was made to the station.
 HU2662
 HU2662.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2662.GEOID18 height accuracy estimate available here.
 HU2662
 HU2662.Click photographs - Photos may exist for this station.
 HU2662
 HU2662;                    North         East    Units  Estimated Accuracy
 HU2662;SPC MD       -    72,660.      507,570.      MT  (+/- 180 meters Scaled)
 HU2662
 HU2662_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH326410(NAD 83)
 HU2662
 HU2662                          SUPERSEDED SURVEY CONTROL
 HU2662
 HU2662  NGVD 29 (11/18/05)    2.26   (m)            7.4    (f) RESET       3  
 HU2662
 HU2662.Superseded values are not recommended for survey control.
 HU2662
 HU2662.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2662.See file dsdata.pdf to determine how the superseded data were derived.
 HU2662
 HU2662_MARKER: DV = VERTICAL CONTROL DISK
 HU2662_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2662_STAMPING: A 105 RESET 1983
 HU2662_MARK LOGO: NGS
 HU2662_PROJECTION: PROJECTING 10 CENTIMETERS
 HU2662_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2662+STABILITY: SURFACE MOTION
 HU2662
 HU2662  HISTORY     - Date     Condition        Report By
 HU2662  HISTORY     - 1983     MONUMENTED       NGS
 HU2662  HISTORY     - 20120322 POOR             USACE
 HU2662
 HU2662                          STATION DESCRIPTION
 HU2662
 HU2662'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 HU2662'6.0 KM (3.75 MI) NE FROM WHITEHAVEN.
 HU2662'6.1 KM (3.80 MI) NORTHEAST ALONG STATE HIGHWAY 352 FROM THE FERRY
 HU2662'LANDING IN WHITEHAVEN, 6.1 KM (3.80 MI) SOUTHEAST ALONG STATE HIGHWAY
 HU2662'352 JUNCTION WITH STATE HIGHWAY 349, 8.9 M (29.2 FT) NORTH-NORTHWEST
 HU2662'FROM THE CENTER OF STATE HIGHWAY 352, 10.8 M (35.4 FT) SOUTHEAST FROM
 HU2662'THE CENTER OF A DIRT ROAD, 26.8 M (87.9 FT) EAST FROM THE DIRT ROADS
 HU2662'JUNCTION WITH STATE HIGHWAY 352, 1.2 M (3.9 FT) NORTHWEST FROM A
 HU2662'POWERLINE GUY POLE NUMBERED 41970 91364, 16.6 M (54.5 FT)
 HU2662'NORTH-NORTHWEST FROM A POWERLINE POLE WITH A TRANSFORMED NUMBERED
 HU2662'223, AND ABOUT 100 METERS EAST-NORTHEAST FROM A SMALL BRIDGE OVER
 HU2662'HEAD OF THE CREEK.
 HU2662'THE MARK IS 0.58 METERS  N FROM  A WITNESS POST
 HU2662'THE MARK IS .05 M BELOW HWY 352.
 HU2662
 HU2662                          STATION RECOVERY (2012)
 HU2662
 HU2662'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2012 (HLC)
 HU2662'RECOVERED AS DESCRIBED. STATION HAS BEEN HIT WITH A TRACTOR AND IS
 HU2662'LEANING AT A 45 DEGREE ANGLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0574 ***********************************************************************
 HU0574  DESIGNATION -  A 107
 HU0574  PID         -  HU0574
 HU0574  STATE/COUNTY-  MD/SOMERSET
 HU0574  COUNTRY     -  US
 HU0574  USGS QUAD   -  MONIE (2016)
 HU0574
 HU0574                         *CURRENT SURVEY CONTROL
 HU0574  ______________________________________________________________________
 HU0574* NAD 83(1986) POSITION- 38 11 07.     (N) 075 51 38.     (W)   SCALED
 HU0574* NAVD 88 ORTHO HEIGHT -     0.446 (meters)        1.46  (feet) ADJUSTED
 HU0574  ______________________________________________________________________
 HU0574  GEOID HEIGHT    -        -35.867 (meters)                     GEOID18
 HU0574  DYNAMIC HEIGHT  -          0.446 (meters)        1.46  (feet) COMP
 HU0574  MODELED GRAVITY -    979,986.1   (mgal)                       NAVD 88
 HU0574
 HU0574  VERT ORDER      -  FIRST     CLASS I
 HU0574
 HU0574.The horizontal coordinates were scaled from a map and have
 HU0574.an estimated accuracy of +/- 6 seconds.
 HU0574
 HU0574.The orthometric height was determined by differential leveling and
 HU0574.adjusted by the NATIONAL GEODETIC SURVEY
 HU0574.in June 1991.
 HU0574
 HU0574.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0574.GEOID18 height accuracy estimate available here.
 HU0574
 HU0574.Click photographs - Photos may exist for this station.
 HU0574
 HU0574.The dynamic height is computed by dividing the NAVD 88
 HU0574.geopotential number by the normal gravity value computed on the
 HU0574.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0574.degrees latitude (g = 980.6199 gals.).
 HU0574
 HU0574.The modeled gravity was interpolated from observed gravity values.
 HU0574
 HU0574;                    North         East    Units  Estimated Accuracy
 HU0574;SPC MD       -    58,190.      499,830.      MT  (+/- 180 meters Scaled)
 HU0574
 HU0574_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH246267(NAD 83)
 HU0574
 HU0574                          SUPERSEDED SURVEY CONTROL
 HU0574
 HU0574  NGVD 29 (11/26/84)    0.704  (m)            2.31   (f) ADJUSTED    1 1
 HU0574
 HU0574.Superseded values are not recommended for survey control.
 HU0574
 HU0574.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0574.See file dsdata.pdf to determine how the superseded data were derived.
 HU0574
 HU0574_MARKER: DB = BENCH MARK DISK
 HU0574_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0574_STAMPING: A 107 1963
 HU0574_MARK LOGO: CGS
 HU0574_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0574_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0574+STABILITY: SURFACE MOTION
 HU0574
 HU0574  HISTORY     - Date     Condition        Report By
 HU0574  HISTORY     - 1963     MONUMENTED       CGS
 HU0574
 HU0574                          STATION DESCRIPTION
 HU0574
 HU0574'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0574'2 MI E FROM DAMES QUARTER.
 HU0574'2.05 MILES EAST ALONG STATE HIGHWAY 363 FROM THE POST OFFICE AT
 HU0574'DAMES QUARTER, AT THE JUNCTION OF A SAND ROAD LEADING SOUTHWEST,
 HU0574'32.5 FEET SOUTH OF CENTER LINE OF HIGHWAY, 34 FEET SOUTHEAST OF
 HU0574'CENTER OF THE JUNCTION, 59.5 FEET SOUTH AND ACROSS HIGHWAY FROM A
 HU0574'METAL POST WITH THE PAINTED NUMBER 98, 52 FEET EAST OF CENTER
 HU0574'LINE OF SAND ROAD, 1.5 FEET WEST OF A STEEL WITNESS POST, ABOUT
 HU0574'LEVEL WITH HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST
 HU0574'PROJECTING 3 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0540 ***********************************************************************
 HU0540  DESIGNATION -  A 108
 HU0540  PID         -  HU0540
 HU0540  STATE/COUNTY-  MD/WICOMICO
 HU0540  COUNTRY     -  US
 HU0540  USGS QUAD   -  EDEN (2016)
 HU0540
 HU0540                         *CURRENT SURVEY CONTROL
 HU0540  ______________________________________________________________________
 HU0540* NAD 83(1986) POSITION- 38 21 45.     (N) 075 41 36.     (W)   SCALED
 HU0540* NAVD 88 ORTHO HEIGHT -     8.503 (meters)       27.90  (feet) ADJUSTED
 HU0540  ______________________________________________________________________
 HU0540  GEOID HEIGHT    -        -35.756 (meters)                     GEOID18
 HU0540  DYNAMIC HEIGHT  -          8.498 (meters)       27.88  (feet) COMP
 HU0540  MODELED GRAVITY -    980,005.6   (mgal)                       NAVD 88
 HU0540
 HU0540  VERT ORDER      -  FIRST     CLASS I
 HU0540
 HU0540.The horizontal coordinates were scaled from a map and have
 HU0540.an estimated accuracy of +/- 6 seconds.
 HU0540
 HU0540.The orthometric height was determined by differential leveling and
 HU0540.adjusted by the NATIONAL GEODETIC SURVEY
 HU0540.in June 1991.
 HU0540
 HU0540.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0540.GEOID18 height accuracy estimate available here.
 HU0540
 HU0540.Click photographs - Photos may exist for this station.
 HU0540
 HU0540.The dynamic height is computed by dividing the NAVD 88
 HU0540.geopotential number by the normal gravity value computed on the
 HU0540.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0540.degrees latitude (g = 980.6199 gals.).
 HU0540
 HU0540.The modeled gravity was interpolated from observed gravity values.
 HU0540
 HU0540;                    North         East    Units  Estimated Accuracy
 HU0540;SPC MD       -    78,060.      514,200.      MT  (+/- 180 meters Scaled)
 HU0540
 HU0540_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH394462(NAD 83)
 HU0540
 HU0540                          SUPERSEDED SURVEY CONTROL
 HU0540
 HU0540  NGVD 29 (06/12/91)    8.754  (m)           28.72   (f) ADJUSTED    1 1
 HU0540  NGVD 29 (??/??/87)    8.754  (m)           28.72   (f) SUPERSEDED  1 1
 HU0540
 HU0540.Superseded values are not recommended for survey control.
 HU0540
 HU0540.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0540.See file dsdata.pdf to determine how the superseded data were derived.
 HU0540
 HU0540_STAMPING: A 108 1963
 HU0540_MARK LOGO: CGS
 HU0540_PROJECTION: FLUSH
 HU0540_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0540+SATELLITE: SATELLITE OBSERVATIONS - January 05, 1990
 HU0540_ROD/PIPE-DEPTH: 24.4 meters
 HU0540
 HU0540  HISTORY     - Date     Condition        Report By
 HU0540  HISTORY     - 1963     MONUMENTED       CGS
 HU0540  HISTORY     - 19900105 GOOD             NGS
 HU0540  HISTORY     - 20190424 MARK NOT FOUND   PROFLN
 HU0540
 HU0540                          STATION DESCRIPTION
 HU0540
 HU0540'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0540'4.4 MI W FROM SALISBURY.
 HU0540'4.4 MILES WEST ALONG STATE HIGHWAY 349 FROM THE JUNCTION OF
 HU0540'U.S. HIGHWAY 50 AT SALISBURY, AT THE QUANTICO LOOKOUT TOWER, 10.3
 HU0540'FEET SOUTHWEST OF NORTHEAST LEG OF TOWER, 5 FEET EAST OF EAST END
 HU0540'OF THE STEPS LEADING TO TOP OF TOWER, 17 FEET NORTH-NORTHWEST OF
 HU0540'SOUTHEAST LEG OF TOWER, 88 FEET SOUTH OF CENTER LINE OF HIGHWAY,
 HU0540'1.5 FEET WEST OF A STEEL WITNESS POST, 3 FEET ABOVE LEVEL OF
 HU0540'HIGHWAY, AND IS A DISK ON TOP OF A COPPER COATED STEEL ROD FLUSH
 HU0540'WITH GROUND AND PROTECTED BY A 6-INCH TILE WHICH PROJECTS 3
 HU0540'INCHES.  THE ROD WAS DRIVEN TO A DEPTH OF 80 FEET.
 HU0540
 HU0540                          STATION RECOVERY (1990)
 HU0540
 HU0540'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0540'7.1 KM (4.41 MI) WESTERLY ALONG STATE HIGHWAY 349 (QUANTICO ROAD)
 HU0540'FROM THE JUNCTION OF U.S. HIGHWAY 50 IN SALISBURY, 26.8 M (87.93 FT)
 HU0540'SOUTH OF THE CENTERLINE OF THE HIGHWAY, 5.2 M (17.06 FT)
 HU0540'NORTH-NORTHWEST OF THE SOUTHEAST LEG OF THE QUANTICO LOOKOUT TOWER,
 HU0540'3.1 M (10.17 FT) SOUTHWEST OF THE NORTHEAST LEG OF THE TOWER, 0.6 M
 HU0540'(1.97 FT) ABOVE THE LEVEL OF THE HIGHWAY, AND 0.5 M (1.64 FT) WEST OF
 HU0540'A WITNESS POST.  NOTE--THE DISK IS CRIMPED TO THE TOP OF A COPPER
 HU0540'COATED METAL ROD ENCASED IN A 6-INCH TILE THAT PROJECTS 0.1 M (0.33
 HU0540'FT) ABOVE THE GROUND SURFACE.
 HU0540
 HU0540                          STATION RECOVERY (2019)
 HU0540
 HU0540'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU0540'BELIEVED LOST.  THE FIRE TOWER HAS BEEN REMOVED AND THE AREA ALL TORN
 HU0540'UP.  THE GENERAL ELEVATION OF THE GROUND IN THIS AREA IS MORE LEVEL
 HU0540'WITH THE HIGHWAY NOW, NOT 2-3 FT (0.6 M) ABOVE THE HIGHWAY AS IN 1990.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1325 ***********************************************************************
 JV1325  DESIGNATION -  A 109
 JV1325  PID         -  JV1325
 JV1325  STATE/COUNTY-  MD/HOWARD
 JV1325  COUNTRY     -  US
 JV1325  USGS QUAD   -  SAVAGE (2016)
 JV1325
 JV1325                         *CURRENT SURVEY CONTROL
 JV1325  ______________________________________________________________________
 JV1325* NAD 83(1986) POSITION- 39 13 44.     (N) 076 50 37.     (W)   SCALED
 JV1325* NAVD 88 ORTHO HEIGHT -   107.780 (meters)      353.61  (feet) ADJUSTED
 JV1325  ______________________________________________________________________
 JV1325  GEOID HEIGHT    -        -32.190 (meters)                     GEOID18
 JV1325  DYNAMIC HEIGHT  -        107.722 (meters)      353.42  (feet) COMP
 JV1325  MODELED GRAVITY -    980,090.4   (mgal)                       NAVD 88
 JV1325
 JV1325  VERT ORDER      -  SECOND    CLASS 0
 JV1325
 JV1325.The horizontal coordinates were scaled from a map and have
 JV1325.an estimated accuracy of +/- 6 seconds.
 JV1325
 JV1325.The orthometric height was determined by differential leveling and
 JV1325.adjusted by the NATIONAL GEODETIC SURVEY
 JV1325.in June 1991.
 JV1325
 JV1325.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1325.GEOID18 height accuracy estimate available here.
 JV1325
 JV1325.Click photographs - Photos may exist for this station.
 JV1325
 JV1325.The dynamic height is computed by dividing the NAVD 88
 JV1325.geopotential number by the normal gravity value computed on the
 JV1325.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1325.degrees latitude (g = 980.6199 gals.).
 JV1325
 JV1325.The modeled gravity was interpolated from observed gravity values.
 JV1325
 JV1325;                    North         East    Units  Estimated Accuracy
 JV1325;SPC MD       -   173,430.      413,500.      MT  (+/- 180 meters Scaled)
 JV1325
 JV1325_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ408437(NAD 83)
 JV1325
 JV1325                          SUPERSEDED SURVEY CONTROL
 JV1325
 JV1325  NGVD 29 (11/26/84)  108.002  (m)          354.34   (f) ADJUSTED    2 0
 JV1325
 JV1325.Superseded values are not recommended for survey control.
 JV1325
 JV1325.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1325.See file dsdata.pdf to determine how the superseded data were derived.
 JV1325
 JV1325_MARKER: DD = SURVEY DISK
 JV1325_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1325_STAMPING: A 109 1965 USC AND GS
 JV1325_MARK LOGO: MDBCSM
 JV1325_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1325+STABILITY: SURFACE MOTION
 JV1325
 JV1325  HISTORY     - Date     Condition        Report By
 JV1325  HISTORY     - 1966     MONUMENTED       MDBCSM
 JV1325
 JV1325                          STATION DESCRIPTION
 JV1325
 JV1325'DESCRIBED BY MD BUR SURV AND MAPS 1966
 JV1325'0.9 MI S FROM COLUMBIA.
 JV1325'ABOUT 0.9 MILE SOUTH ALONG U.S. HIGHWAY 29 FROM THE INTERSECTION
 JV1325'OF STATE HIGHWAY 108 AT COLUMBIA, 50.0 FT. EAST OF THE CENTERLINE
 JV1325'OF THE HIGHWAY, 22.0 FT. NORTH OF THE CENTERLINE OF THE
 JV1325'ROAD LEADING EAST (PEPPEL DRIVE) 2.5 FT. NORTH OF POWER POLE
 JV1325'NUMBER 358665, 3.8 FT. SOUTHWEST OF THE SOUTHWEST EDGE OF A
 JV1325'CULVERT, 2.0 FT. SOUTH OF A METAL WITNESS POST, SET IN THE TOP
 JV1325'OF A CONCRETE POST PROJECTING 1 INCH ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1326 ***********************************************************************
 JV1326  DESIGNATION -  A 109 RESET
 JV1326  PID         -  JV1326
 JV1326  STATE/COUNTY-  MD/HOWARD
 JV1326  COUNTRY     -  US
 JV1326  USGS QUAD   -  SAVAGE (2016)
 JV1326
 JV1326                         *CURRENT SURVEY CONTROL
 JV1326  ______________________________________________________________________
 JV1326* NAD 83(1986) POSITION- 39 13 44.8    (N) 076 50 37.7    (W)   HD_HELD2
 JV1326* NAVD 88 ORTHO HEIGHT -   106.916 (meters)      350.77  (feet) ADJUSTED
 JV1326  ______________________________________________________________________
 JV1326  GEOID HEIGHT    -        -32.190 (meters)                     GEOID18
 JV1326  DYNAMIC HEIGHT  -        106.859 (meters)      350.59  (feet) COMP
 JV1326  MODELED GRAVITY -    980,090.4   (mgal)                       NAVD 88
 JV1326
 JV1326  VERT ORDER      -  SECOND    CLASS I
 JV1326
 JV1326.The horizontal coordinates were established by autonomous hand held GPS
 JV1326.observations and have an estimated accuracy of +/- 10 meters.
 JV1326
 JV1326.The orthometric height was determined by differential leveling and
 JV1326.adjusted by the NATIONAL GEODETIC SURVEY
 JV1326.in March 2010.
 JV1326
 JV1326.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1326.GEOID18 height accuracy estimate available here.
 JV1326
 JV1326.Click photographs - Photos may exist for this station.
 JV1326
 JV1326.The dynamic height is computed by dividing the NAVD 88
 JV1326.geopotential number by the normal gravity value computed on the
 JV1326.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1326.degrees latitude (g = 980.6199 gals.).
 JV1326
 JV1326.The modeled gravity was interpolated from observed gravity values.
 JV1326
 JV1326;                    North         East    Units  Estimated Accuracy
 JV1326;SPC MD       -   173,452.      413,486.      MT  (+/- 10 meters HH2 GPS)
 JV1326
 JV1326_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4085243821(NAD 83)
 JV1326
 JV1326                          SUPERSEDED SURVEY CONTROL
 JV1326
 JV1326  NAVD 88 (11/18/05)  106.922  (m)          350.79   (f) SUPERSEDED  3 0
 JV1326  NGVD 29 (??/??/??)  107.14   (m)          351.5    (f) RESET       3  
 JV1326
 JV1326.Superseded values are not recommended for survey control.
 JV1326
 JV1326.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1326.See file dsdata.pdf to determine how the superseded data were derived.
 JV1326
 JV1326_MARKER: DV = VERTICAL CONTROL DISK
 JV1326_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1326_SP_SET: DRAINAGE INLET
 JV1326_STAMPING: A 109 RESET 1973
 JV1326_MARK LOGO: NGS
 JV1326_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1326_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1326+SATELLITE: SATELLITE OBSERVATIONS - May 24, 2007
 JV1326
 JV1326  HISTORY     - Date     Condition        Report By
 JV1326  HISTORY     - 1973     MONUMENTED       NGS
 JV1326  HISTORY     - 20070524 GOOD             MDSHA
 JV1326
 JV1326                          STATION DESCRIPTION
 JV1326
 JV1326'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973
 JV1326'2 MI N FROM COLUMBIA.
 JV1326'THE MARK IS LOCATED ABOUT 2 MILES NORTH OF COLUMBIA AND
 JV1326'BETWEEN THE NORTH BOUND LANES AND THE SOUTH BOUND LANES OF
 JV1326'U.S. HIGHWAY 29 AT PREPPLE ROAD.  THE DISK IS A STANDARD NGS
 JV1326'BENCH MARK DISK SET IN A DRILL HOLE IN THE CONCRETE RETAINING
 JV1326'WALL OF A DRAINAGE HOLE.  IT IS ABOUT 4 FEET LOWER THAN THE
 JV1326'SOUTH BOUND LANE OF U.S. HIGHWAY 29 AND ABOUT 2 FEET LOWER
 JV1326'THAN THE NORTH BOUND LANE.  IT IS 55 FEET WEST OF THE NORTH
 JV1326'BOUND LANE, 53 FEET NORTH OF THE INTERSECTION ON U.S. HIGHWAY
 JV1326'29 AND PREPPLE ROAD, 42 FEET EAST OF THE SOUTH BOUND LANE OF
 JV1326'U.S. HIGHWAY 29 AND IN THE SOUTH PART OF THE RETAINING WALL.
 JV1326'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 29 AND STATE
 JV1326'HIGHWAY 108 WHICH IS ABOUT 2 3/4 MILES NORTH OF COLUMBIA, GO
 JV1326'SOUTH ON U.S. HIGHWAY 29 FOR 0.9 MILE TO PREPPLE ROAD AND THE
 JV1326'MARK IN THE CENTER OF THE ROAD.  BENCH MARK A 109 (MBCS) 1943
 JV1326'WAS DESTROYED AFTER RELEVELING TO A 109 RESET 1973.
 JV1326
 JV1326                          STATION RECOVERY (2007)
 JV1326
 JV1326'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV1326'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1117 ***********************************************************************
 JV1117  DESIGNATION -  A 110 MDSRC
 JV1117  PID         -  JV1117
 JV1117  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1117  COUNTRY     -  US
 JV1117  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1117
 JV1117                         *CURRENT SURVEY CONTROL
 JV1117  ______________________________________________________________________
 JV1117* NAD 83(1986) POSITION- 39 19 05.     (N) 076 32 06.     (W)   SCALED
 JV1117* NAVD 88 ORTHO HEIGHT -    10.069 (meters)       33.03  (feet) ADJUSTED
 JV1117  ______________________________________________________________________
 JV1117  GEOID HEIGHT    -        -32.862 (meters)                     GEOID18
 JV1117  DYNAMIC HEIGHT  -         10.064 (meters)       33.02  (feet) COMP
 JV1117  MODELED GRAVITY -    980,099.1   (mgal)                       NAVD 88
 JV1117
 JV1117  VERT ORDER      -  FIRST     CLASS II
 JV1117
 JV1117.The horizontal coordinates were scaled from a map and have
 JV1117.an estimated accuracy of +/- 6 seconds.
 JV1117
 JV1117.The orthometric height was determined by differential leveling and
 JV1117.adjusted by the NATIONAL GEODETIC SURVEY
 JV1117.in June 1991.
 JV1117
 JV1117.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1117.GEOID18 height accuracy estimate available here.
 JV1117
 JV1117.Click photographs - Photos may exist for this station.
 JV1117
 JV1117.The dynamic height is computed by dividing the NAVD 88
 JV1117.geopotential number by the normal gravity value computed on the
 JV1117.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1117.degrees latitude (g = 980.6199 gals.).
 JV1117
 JV1117.The modeled gravity was interpolated from observed gravity values.
 JV1117
 JV1117;                    North         East    Units  Estimated Accuracy
 JV1117;SPC MD       -   183,420.      440,100.      MT  (+/- 180 meters Scaled)
 JV1117
 JV1117_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ676531(NAD 83)
 JV1117
 JV1117                          SUPERSEDED SURVEY CONTROL
 JV1117
 JV1117  NGVD 29 (11/26/84)   10.316  (m)           33.85   (f) ADJUSTED    1 2
 JV1117
 JV1117.Superseded values are not recommended for survey control.
 JV1117
 JV1117.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1117.See file dsdata.pdf to determine how the superseded data were derived.
 JV1117
 JV1117_MARKER: DD = SURVEY DISK
 JV1117_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1117_STAMPING: A-110 1965
 JV1117_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1117+STABILITY: SURFACE MOTION
 JV1117
 JV1117  HISTORY     - Date     Condition        Report By
 JV1117  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1117
 JV1117                          STATION DESCRIPTION
 JV1117
 JV1117'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1117'1 MI SW FROM ROSEDALE.
 JV1117'2.7 MILES SOUTHWEST OF THE BALTIMORE BELTWAY AND KENNEDY MEMORIAL
 JV1117'HIGHWAY INTERCHANGE ALONG THE KENNEDY MEMORIAL HIGHWAY ON THE
 JV1117'RIGHT, 23.3 FEET NORTHWEST OF THE CENTERLINE OF THE SOUTH BOUND
 JV1117'LANE OF THE KENNEDY MEMORIAL HIGHWAY, 5.5 FEET NORTHEAST OF THE
 JV1117'NORTHEAST CORNER OF THE SOUTH BOUND LANE BRIDGE OVER MOORES RUN
 JV1117'AND 0.5 FEET NORTHWEST OF THE BEAM TYPE GUARD RAIL, SET IN THE TOP
 JV1117'OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1017 ***********************************************************************
 HV1017  DESIGNATION -  A 111
 HV1017  PID         -  HV1017
 HV1017  STATE/COUNTY-  MD/CHARLES
 HV1017  COUNTRY     -  US
 HV1017  USGS QUAD   -  HUGHESVILLE (2016)
 HV1017
 HV1017                         *CURRENT SURVEY CONTROL
 HV1017  ______________________________________________________________________
 HV1017* NAD 83(1986) POSITION- 38 33 37.     (N) 076 52 09.     (W)   SCALED
 HV1017* NAVD 88 ORTHO HEIGHT -    54.565 (meters)      179.02  (feet) ADJUSTED
 HV1017  ______________________________________________________________________
 HV1017  GEOID HEIGHT    -        -33.224 (meters)                     GEOID18
 HV1017  DYNAMIC HEIGHT  -         54.532 (meters)      178.91  (feet) COMP
 HV1017  MODELED GRAVITY -    980,024.2   (mgal)                       NAVD 88
 HV1017
 HV1017  VERT ORDER      -  SECOND    CLASS 0
 HV1017
 HV1017.The horizontal coordinates were scaled from a map and have
 HV1017.an estimated accuracy of +/- 6 seconds.
 HV1017
 HV1017.The orthometric height was determined by differential leveling and
 HV1017.adjusted by the NATIONAL GEODETIC SURVEY
 HV1017.in June 1991.
 HV1017
 HV1017.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1017.GEOID18 height accuracy estimate available here.
 HV1017
 HV1017.Click photographs - Photos may exist for this station.
 HV1017
 HV1017.The dynamic height is computed by dividing the NAVD 88
 HV1017.geopotential number by the normal gravity value computed on the
 HV1017.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1017.degrees latitude (g = 980.6199 gals.).
 HV1017
 HV1017.The modeled gravity was interpolated from observed gravity values.
 HV1017
 HV1017;                    North         East    Units  Estimated Accuracy
 HV1017;SPC MD       -    99,200.      411,400.      MT  (+/- 180 meters Scaled)
 HV1017
 HV1017_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH371696(NAD 83)
 HV1017
 HV1017                          SUPERSEDED SURVEY CONTROL
 HV1017
 HV1017  NGVD 29 (11/26/84)   54.798  (m)          179.78   (f) ADJUSTED    2 0
 HV1017
 HV1017.Superseded values are not recommended for survey control.
 HV1017
 HV1017.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1017.See file dsdata.pdf to determine how the superseded data were derived.
 HV1017
 HV1017_MARKER: DD = SURVEY DISK
 HV1017_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1017_STAMPING: A 111 1966 USC AND GS
 HV1017_MARK LOGO: MDBCSM
 HV1017_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1017+STABILITY: SURFACE MOTION
 HV1017
 HV1017  HISTORY     - Date     Condition        Report By
 HV1017  HISTORY     - 1966     MONUMENTED       MDSRC
 HV1017  HISTORY     - 1967     GOOD             MDSRC
 HV1017
 HV1017                          STATION DESCRIPTION
 HV1017
 HV1017'DESCRIBED BY MD STATE ROADS COMM 1967
 HV1017'6.5 MI NE FROM LA PLATA.
 HV1017'FROM THE COURTHOUSE IN LA PLATA PROCEED EAST ALONG MARYLAND
 HV1017'HIGHWAY 6 (CHARLES STREET) FOR 1.1 MILES TO THE INTERSECTION
 HV1017'OF MARYLAND HIGHWAY 488, THENCE NORTHEAST ALONG MARYLAND HIGHWAY
 HV1017'488 FOR 0.6 MILE TO Y INTERSECTION CONTINUE ALONG MARYLAND
 HV1017'HIGHWAY 488 FOR 4.8 MILES, 23.0 FEET NORTH OF THE CENTERLINE
 HV1017'OF THE HIGHWAY, 4.5 FEET NORTH OF POWER POLE NUMBER 10, 45.5
 HV1017'FEET EAST OF THE END OF A GUARD RAIL, 37.7 FEET WEST OF THE
 HV1017'END OF ANOTHER GUARD RAIL, 2.5 FEET SOUTH OF A METAL WITNESS
 HV1017'POST, SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1280 ***********************************************************************
 JV1280  DESIGNATION -  A 112
 JV1280  PID         -  JV1280
 JV1280  STATE/COUNTY-  MD/BALTIMORE
 JV1280  COUNTRY     -  US
 JV1280  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1280
 JV1280                         *CURRENT SURVEY CONTROL
 JV1280  ______________________________________________________________________
 JV1280* NAD 83(1986) POSITION- 39 23 04.     (N) 076 44 00.     (W)   SCALED
 JV1280* NAVD 88 ORTHO HEIGHT -   161.590 (meters)      530.15  (feet) ADJUSTED
 JV1280  ______________________________________________________________________
 JV1280  GEOID HEIGHT    -        -32.269 (meters)                     GEOID18
 JV1280  DYNAMIC HEIGHT  -        161.505 (meters)      529.87  (feet) COMP
 JV1280  MODELED GRAVITY -    980,097.3   (mgal)                       NAVD 88
 JV1280
 JV1280  VERT ORDER      -  SECOND    CLASS 0
 JV1280
 JV1280.The horizontal coordinates were scaled from a map and have
 JV1280.an estimated accuracy of +/- 6 seconds.
 JV1280
 JV1280.The orthometric height was determined by differential leveling and
 JV1280.adjusted by the NATIONAL GEODETIC SURVEY
 JV1280.in June 1991.
 JV1280
 JV1280.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1280.GEOID18 height accuracy estimate available here.
 JV1280
 JV1280.Click photographs - Photos may exist for this station.
 JV1280
 JV1280.The dynamic height is computed by dividing the NAVD 88
 JV1280.geopotential number by the normal gravity value computed on the
 JV1280.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1280.degrees latitude (g = 980.6199 gals.).
 JV1280
 JV1280.The modeled gravity was interpolated from observed gravity values.
 JV1280
 JV1280;                    North         East    Units  Estimated Accuracy
 JV1280;SPC MD       -   190,720.      422,980.      MT  (+/- 180 meters Scaled)
 JV1280
 JV1280_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ507608(NAD 83)
 JV1280
 JV1280                          SUPERSEDED SURVEY CONTROL
 JV1280
 JV1280  NGVD 29 (11/26/84)  161.802  (m)          530.85   (f) ADJUSTED    2 0
 JV1280
 JV1280.Superseded values are not recommended for survey control.
 JV1280
 JV1280.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1280.See file dsdata.pdf to determine how the superseded data were derived.
 JV1280
 JV1280_MARKER: DB = BENCH MARK DISK
 JV1280_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JV1280_SP_SET: BRIDGE WINGWALL
 JV1280_STAMPING: A-112 1967
 JV1280_MARK LOGO: CGS
 JV1280_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1280_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1280
 JV1280  HISTORY     - Date     Condition        Report By
 JV1280  HISTORY     - 1967     MONUMENTED       MDSRC
 JV1280  HISTORY     - 19960201 GOOD             MCCRON
 JV1280  HISTORY     - 20100217 MARK NOT FOUND   JARICE
 JV1280
 JV1280                          STATION DESCRIPTION
 JV1280
 JV1280'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1280'1 MI NW FROM PIKESVILLE.
 JV1280'STATION IS LOCATED ON U.S. 140 (REISTERSTOWN ROAD) AT THE BRIDGE
 JV1280'CROSSING OVER THE BALTIMORE BELTWAY.  IT IS ON TOP OF THE SOUTHEAST
 JV1280'END OF THE EAST WING WALL OF THE BRIDGE, 19.0 FEET EAST OF THE
 JV1280'CENTERLINE OF THE NORTH BOUND LANES OF U.S. 140, 22.0 FEET WEST
 JV1280'OF POWER POLE NUMBER 296609.  A STANDARD DISK SET FLUSH IN A DRILLED
 JV1280'HOLE ON TOP OF WING WALL, STAMPED A-112 1967 U.S.C. AND G.S.
 JV1280
 JV1280                          STATION RECOVERY (1996)
 JV1280
 JV1280'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 JV1280'RECOVERED AS DESCRIBED.
 JV1280
 JV1280                          STATION RECOVERY (2010)
 JV1280
 JV1280'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV1280'THE BRIDGE WAS REPLACED IN 2002.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0478 ***********************************************************************
 JW0478  DESIGNATION -  A 113
 JW0478  PID         -  JW0478
 JW0478  STATE/COUNTY-  MD/ALLEGANY
 JW0478  COUNTRY     -  US
 JW0478  USGS QUAD   -  CUMBERLAND (2016)
 JW0478
 JW0478                         *CURRENT SURVEY CONTROL
 JW0478  ______________________________________________________________________
 JW0478* NAD 83(1986) POSITION- 39 39 49.80   (N) 078 45 12.45   (W)   HD_HELD1
 JW0478* NAVD 88 ORTHO HEIGHT -   225.222 (meters)      738.92  (feet) ADJUSTED
 JW0478  ______________________________________________________________________
 JW0478  GEOID HEIGHT    -        -32.716 (meters)                     GEOID18
 JW0478  DYNAMIC HEIGHT  -        225.092 (meters)      738.49  (feet) COMP
 JW0478  MODELED GRAVITY -    980,042.3   (mgal)                       NAVD 88
 JW0478
 JW0478  VERT ORDER      -  FIRST     CLASS II
 JW0478
 JW0478.The horizontal coordinates were determined by differentially corrected
 JW0478.hand held GPS observations or other comparable positioning techniques
 JW0478.and have an estimated accuracy of +/- 3 meters.
 JW0478
 JW0478.The orthometric height was determined by differential leveling and
 JW0478.adjusted by the NATIONAL GEODETIC SURVEY
 JW0478.in June 1991.
 JW0478
 JW0478.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0478.GEOID18 height accuracy estimate available here.
 JW0478
 JW0478.Click photographs - Photos may exist for this station.
 JW0478
 JW0478.The dynamic height is computed by dividing the NAVD 88
 JW0478.geopotential number by the normal gravity value computed on the
 JW0478.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0478.degrees latitude (g = 980.6199 gals.).
 JW0478
 JW0478.The modeled gravity was interpolated from observed gravity values.
 JW0478
 JW0478;                    North         East    Units  Estimated Accuracy
 JW0478;SPC MD       -   223,150.3     249,536.3     MT  (+/- 3 meters HH1 GPS) 
 JW0478
 JW0478_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9271092859(NAD 83)
 JW0478
 JW0478                          SUPERSEDED SURVEY CONTROL
 JW0478
 JW0478  NGVD 29 (??/??/92)  225.415  (m)          739.55   (f) ADJ UNCH    1 2
 JW0478
 JW0478.Superseded values are not recommended for survey control.
 JW0478
 JW0478.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0478.See file dsdata.pdf to determine how the superseded data were derived.
 JW0478
 JW0478_MARKER: DB = BENCH MARK DISK
 JW0478_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JW0478_STAMPING: A 113 1967
 JW0478_MARK LOGO: CGS
 JW0478_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0478+STABILITY: SURFACE MOTION
 JW0478_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0478+SATELLITE: SATELLITE OBSERVATIONS - August 31, 2007
 JW0478
 JW0478  HISTORY     - Date     Condition        Report By
 JW0478  HISTORY     - 1967     MONUMENTED       CGS
 JW0478  HISTORY     - 1983     GOOD             NGS
 JW0478  HISTORY     - 20070831 GOOD             GEOCAC
 JW0478  HISTORY     - 20101020 GOOD             JCLS
 JW0478  HISTORY     - 20110909 GOOD             JCLS
 JW0478
 JW0478                          STATION DESCRIPTION
 JW0478
 JW0478'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JW0478'0.7 MI N FROM CUMBERLAND.
 JW0478'ABOUT 0.7 MILE NORTH ALONG U.S. HIGHWAY 220 FROM THE JUNCTION
 JW0478'OF U.S. HIGHWAY 220 AND 40, SET IN THE TOP OF THE SOUTHWEST
 JW0478'CORNER OF A CONCRETE MANHOLE, 27.0 FEET NORTH OF NORTH CORNER
 JW0478'OF TOMS CLEANERS INC., 21.0 FEET SOUTHEAST OF CENTERLINE OF NORTH
 JW0478'BOUND LANE OF U.S. HIGHWAY 220, 1.0 FOOT NORTH OF POWERLINE POLE
 JW0478'39, 1.0 FOOT SOUTHEAST OF SOUTHEAST CURB AND ABOUT LEVEL WITH
 JW0478'HIGHWAY.
 JW0478
 JW0478                          STATION RECOVERY (1983)
 JW0478
 JW0478'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0478'RECOVERED IN GOOD CONDITION, NEW DESCRIPTION FOLLOWS.  IN CUMBERLAND,
 JW0478'1.2 KM (0.75 MI) NORTHEAST ALONG FREDERICK STREET FROM CITY HALL,
 JW0478'DIRECTLY ACROSS THE JUNCTION OF CONRAD AVENUE, IN TOP OF THE HEADWALL
 JW0478'OF A STORM DRAIN, 6.40 METERS (21.0 FT) SOUTHEAST OF THE CENTERLINE OF
 JW0478'FREDERICK STREET, 5.73 METERS (18.8 FT) NORTH OF THE NORTH CORNER OF
 JW0478'H.D.R.C. ALLEGANY COUNTY DAY CARE CENTER, 939 FREDERICK STREET,
 JW0478'0.30 METER (1.0 FT) NORTH OF POWER POLE 39.
 JW0478'THE MARK IS 0.24 M ABOVE STREET.
 JW0478
 JW0478                          STATION RECOVERY (2007)
 JW0478
 JW0478'RECOVERY NOTE BY GEOCACHING 2007 (APC)
 JW0478'BUILDING AT 939 FREDERICK STREET IS NOW OCCUPIED BY INDEPENDENT
 JW0478'DIALYSIS FOUNDATION.
 JW0478
 JW0478                          STATION RECOVERY (2010)
 JW0478
 JW0478'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2010
 JW0478'RECOVERED IN GOOD CONDITION.
 JW0478
 JW0478                          STATION RECOVERY (2011)
 JW0478
 JW0478'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2011
 JW0478'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4127 ***********************************************************************
 JU4127  DESIGNATION -  A 114 RESET
 JU4127  PID         -  JU4127
 JU4127  STATE/COUNTY-  MD/CECIL
 JU4127  COUNTRY     -  US
 JU4127  USGS QUAD   -  ELKTON (2016)
 JU4127
 JU4127                         *CURRENT SURVEY CONTROL
 JU4127  ______________________________________________________________________
 JU4127* NAD 83(1986) POSITION- 39 35 58.9    (N) 075 49 34.7    (W)   HD_HELD2
 JU4127* NAVD 88 ORTHO HEIGHT -    14.413 (meters)       47.29  (feet) ADJUSTED
 JU4127  ______________________________________________________________________
 JU4127  GEOID HEIGHT    -        -33.156 (meters)                     GEOID18
 JU4127  DYNAMIC HEIGHT  -         14.406 (meters)       47.26  (feet) COMP
 JU4127  MODELED GRAVITY -    980,141.9   (mgal)                       NAVD 88
 JU4127
 JU4127  VERT ORDER      -  SECOND    CLASS I
 JU4127
 JU4127.The horizontal coordinates were established by autonomous hand held GPS
 JU4127.observations and have an estimated accuracy of +/- 10 meters.
 JU4127
 JU4127.The orthometric height was determined by differential leveling and
 JU4127.adjusted by the NATIONAL GEODETIC SURVEY
 JU4127.in October 2007.
 JU4127
 JU4127.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4127.GEOID18 height accuracy estimate available here.
 JU4127
 JU4127.Click photographs - Photos may exist for this station.
 JU4127
 JU4127.The dynamic height is computed by dividing the NAVD 88
 JU4127.geopotential number by the normal gravity value computed on the
 JU4127.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4127.degrees latitude (g = 980.6199 gals.).
 JU4127
 JU4127.The modeled gravity was interpolated from observed gravity values.
 JU4127
 JU4127;                    North         East    Units  Estimated Accuracy
 JU4127;SPC MD       -   215,232.      500,809.      MT  (+/- 10 meters HH2 GPS)
 JU4127
 JU4127_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2905683654(NAD 83)
 JU4127
 JU4127                          SUPERSEDED SURVEY CONTROL
 JU4127
 JU4127  NAVD 88 (11/18/05)   14.412  (m)           47.28   (f) SUPERSEDED  3 0
 JU4127  NGVD 29 (11/18/05)   14.65   (m)           48.1    (f) RESET       3  
 JU4127
 JU4127.Superseded values are not recommended for survey control.
 JU4127
 JU4127.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4127.See file dsdata.pdf to determine how the superseded data were derived.
 JU4127
 JU4127_MARKER: DV = VERTICAL CONTROL DISK
 JU4127_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JU4127_SP_SET: DRAINAGE INLET
 JU4127_STAMPING: A 114 RESET 1984
 JU4127_MARK LOGO: NGS
 JU4127_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4127_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4127_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4127+SATELLITE: SATELLITE OBSERVATIONS - October 04, 2017
 JU4127
 JU4127  HISTORY     - Date     Condition        Report By
 JU4127  HISTORY     - 1984     MONUMENTED       NGS
 JU4127  HISTORY     - 20040325 GOOD             USPSQD
 JU4127  HISTORY     - 20070501 GOOD             MDSHA
 JU4127  HISTORY     - 20070606 GOOD             MDSHA
 JU4127  HISTORY     - 20150511 GOOD             JARICE
 JU4127  HISTORY     - 20171004 GOOD             GPI
 JU4127
 JU4127                          STATION DESCRIPTION
 JU4127
 JU4127'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JU4127'IN ELKTON.
 JU4127'FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE HIGHWAY 213 IN
 JU4127'ELKTON, GO EASTERLY ON U.S. HIGHWAY 40 FOR 0.15 KM (0.10 MI) TO THE
 JU4127'MARK IN THE MEDIAN STRIP FOR U.S. HIGHWAY 40, 9.6 M (31.5 FT) NORTH
 JU4127'FROM THE CENTER OF THE EAST BOUND LANE OF U.S. HIGHWAY 40, 9.7 M
 JU4127'(31.8 FT) SOUTH FROM THE CENTER OF THE WEST BOUND LANE OF U.S. HIGHWAY
 JU4127'40, 25.9 M (85.0 FT) SOUTH FROM THE SOUTHWEST CORNER OF A FOUNTAIN
 JU4127'FOR A ADVERTISEMENT SIGN FOR CROWN GAS STATION AND 0.6 M (2.0 FT)
 JU4127'WEST FROM THE CENTER OF THE DROP INLET.
 JU4127'THE MARK IS 0.3 M BELOW U.S. HWY 10.
 JU4127
 JU4127                          STATION RECOVERY (2004)
 JU4127
 JU4127'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLG)
 JU4127'RECOVERED IN GOOD CONDITION.
 JU4127
 JU4127                          STATION RECOVERY (2007)
 JU4127
 JU4127'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (DCS)
 JU4127'CROWN STATION HAS BEEN RAZED AND APPEARS THAT IT WILL BE REDEVELOPED.
 JU4127
 JU4127                          STATION RECOVERY (2007)
 JU4127
 JU4127'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JU4127'RECOVERED AS DESCRIBED.
 JU4127
 JU4127                          STATION RECOVERY (2015)
 JU4127
 JU4127'RECOVERY NOTE BY J A RICE INC 2015 (MRA)
 JU4127'RECOVERED AS DESCRIBED.
 JU4127
 JU4127                          STATION RECOVERY (2017)
 JU4127
 JU4127'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2017 (LJB)
 JU4127'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1173 ***********************************************************************
 JU1173  DESIGNATION -  A 115
 JU1173  PID         -  JU1173
 JU1173  STATE/COUNTY-  MD/KENT
 JU1173  COUNTRY     -  US
 JU1173  USGS QUAD   -  GALENA (2017)
 JU1173
 JU1173                         *CURRENT SURVEY CONTROL
 JU1173  ______________________________________________________________________
 JU1173* NAD 83(1986) POSITION- 39 19 27.9    (N) 075 59 57.9    (W)   HD_HELD2
 JU1173* NAVD 88 ORTHO HEIGHT -    21.613 (meters)       70.91  (feet) ADJUSTED
 JU1173  ______________________________________________________________________
 JU1173  GEOID HEIGHT    -        -33.390 (meters)                     GEOID18
 JU1173  DYNAMIC HEIGHT  -         21.602 (meters)       70.87  (feet) COMP
 JU1173  MODELED GRAVITY -    980,115.5   (mgal)                       NAVD 88
 JU1173
 JU1173  VERT ORDER      -  FIRST     CLASS II
 JU1173
 JU1173.The horizontal coordinates were established by autonomous hand held GPS
 JU1173.observations and have an estimated accuracy of +/- 10 meters.
 JU1173
 JU1173.The orthometric height was determined by differential leveling and
 JU1173.adjusted by the NATIONAL GEODETIC SURVEY
 JU1173.in June 1991.
 JU1173
 JU1173.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1173.GEOID18 height accuracy estimate available here.
 JU1173
 JU1173.Click photographs - Photos may exist for this station.
 JU1173
 JU1173.The dynamic height is computed by dividing the NAVD 88
 JU1173.geopotential number by the normal gravity value computed on the
 JU1173.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1173.degrees latitude (g = 980.6199 gals.).
 JU1173
 JU1173.The modeled gravity was interpolated from observed gravity values.
 JU1173
 JU1173;                    North         East    Units  Estimated Accuracy
 JU1173;SPC MD       -   184,494.      486,276.      MT  (+/- 10 meters HH2 GPS)
 JU1173
 JU1173_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1385453254(NAD 83)
 JU1173
 JU1173                          SUPERSEDED SURVEY CONTROL
 JU1173
 JU1173  NGVD 29 (11/26/84)   21.856  (m)           71.71   (f) ADJUSTED    1 2
 JU1173
 JU1173.Superseded values are not recommended for survey control.
 JU1173
 JU1173.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1173.See file dsdata.pdf to determine how the superseded data were derived.
 JU1173
 JU1173_MARKER: DB = BENCH MARK DISK
 JU1173_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JU1173+WITH SETTING: INTO GROUND
 JU1173_STAMPING: A 115 1971
 JU1173_MARK LOGO: CGS
 JU1173_PROJECTION: RECESSED 6 CENTIMETERS
 JU1173_MAGNETIC: I = MARKER IS A STEEL ROD
 JU1173_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU1173_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1173+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2025
 JU1173
 JU1173  HISTORY     - Date     Condition        Report By
 JU1173  HISTORY     - 1971     MONUMENTED       NGS
 JU1173  HISTORY     - 19881129 MARK NOT FOUND   USPSQD
 JU1173  HISTORY     - 20050101 GOOD             USPSQD
 JU1173  HISTORY     - 20130503 GOOD             ARCSHE
 JU1173  HISTORY     - 20220203 GOOD             MDSHA
 JU1173  HISTORY     - 20250821 GOOD             PROFLN
 JU1173
 JU1173                          STATION DESCRIPTION
 JU1173
 JU1173'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1173'2.5 MI E FROM STILL POND.
 JU1173'ABOUT 1.2 MILES EAST ALONG STATE HIGHWAY 566 FROM THE JUNCTION
 JU1173'OF STATE HIGHWAY 292 AT STILL POND, THENCE 1.3 MILES EAST ALONG
 JU1173'STATE HIGHWAY 298, AT THE INTERSECTION OF STATE HIGHWAY 448, 203
 JU1173'FEET NORTHEAST OF THE CENTER OF THE INTERSECTION, 66 FEET NORTH
 JU1173'OF THE CENTER LINE OF STATE HIGHWAY 298, 189 FEET EAST OF THE
 JU1173'CENTER LINE OF STATE HIGHWAY 448, 2 FEET WEST OF A TELEPHONE
 JU1173'POLE, 1.8 FEET EAST OF A METAL WITNESS POST, ABOUT 1 FOOT BELOW
 JU1173'THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-FOOT SECTION
 JU1173'OF COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.
 JU1173'THE DISK IS LEVEL WITH THE SURFACE OF THE GROUND AND IS PROTECTED
 JU1173'BY A 4-INCH METAL PIPE THAT PROJECTS 1 INCH.
 JU1173
 JU1173                          STATION RECOVERY (1988)
 JU1173
 JU1173'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1173'MARK NOT FOUND.
 JU1173
 JU1173                          STATION RECOVERY (2005)
 JU1173
 JU1173'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JU1173'REFERENCED TELEPHONE POLE AND METAL WITNESS POST DO NOT EXIST.  THE
 JU1173'MARK IS OBSCURED UNDER A ROW OF PINES, 5 FEET SW OF A 14 INCH PINE AND
 JU1173'4.5 FEET SW OF A MARYLAND STATE CARSONITE POST, ABOUT 1.5 FEET BELOW
 JU1173'THE LEVEL OF THE HIGHWAY AND AT GROUND LEVEL.
 JU1173'
 JU1173'THE MARK IS ALSO 5.75 MILES W ALONG 213 FROM ITS INTERSECTION WITH 290
 JU1173'AND 313 IN GALENA, THENCE 1.25 MILES NW ALONG HIGHWAY 298 TO THE MARK
 JU1173'ON THE RIGHT.
 JU1173
 JU1173                          STATION RECOVERY (2013)
 JU1173
 JU1173'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU1173'RECOVERED IN GOOD CONDITION.
 JU1173
 JU1173                          STATION RECOVERY (2022)
 JU1173
 JU1173'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 JU1173'RECOVERED AS DESCRIBED.
 JU1173
 JU1173                          STATION RECOVERY (2025)
 JU1173
 JU1173'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1173'THE MARK IS NOW UNDER A RECTANGULAR UTILITY BOX.  THE MARK IS 5 FT
 JU1173'(1.5 M) SOUTH OF A ROW OF BIG PINE TREES, 4 FT (1.2 M) SOUTHWEST
 JU1173'TOWARD THE INTERSECTION FROM AN ORANGE WITNESS POST NEXT TO A TREE, 3
 JU1173'FT (0.9 M) LOWER THAN THE HIGHWAY, 0.4 FT (12 CM) BELOW THE BOX LID
 JU1173'WHICH PROJECTS 0.2 FT (6 CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1862 ***********************************************************************
 JU1862  DESIGNATION -  A 118
 JU1862  PID         -  JU1862
 JU1862  STATE/COUNTY-  MD/CECIL
 JU1862  COUNTRY     -  US
 JU1862  USGS QUAD   -  ELKTON (2016)
 JU1862
 JU1862                         *CURRENT SURVEY CONTROL
 JU1862  ______________________________________________________________________
 JU1862* NAD 83(1986) POSITION- 39 36 19.     (N) 075 47 21.     (W)   SCALED
 JU1862* NAVD 88 ORTHO HEIGHT -    28.035 (meters)       91.98  (feet) ADJUSTED
 JU1862  ______________________________________________________________________
 JU1862  GEOID HEIGHT    -        -33.115 (meters)                     GEOID18
 JU1862  DYNAMIC HEIGHT  -         28.021 (meters)       91.93  (feet) COMP
 JU1862  MODELED GRAVITY -    980,150.2   (mgal)                       NAVD 88
 JU1862
 JU1862  VERT ORDER      -  FIRST     CLASS I
 JU1862
 JU1862.The horizontal coordinates were scaled from a map and have
 JU1862.an estimated accuracy of +/- 6 seconds.
 JU1862
 JU1862.The orthometric height was determined by differential leveling and
 JU1862.adjusted by the NATIONAL GEODETIC SURVEY
 JU1862.in June 1991.
 JU1862
 JU1862.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1862.GEOID18 height accuracy estimate available here.
 JU1862
 JU1862.Click photographs - Photos may exist for this station.
 JU1862
 JU1862.The dynamic height is computed by dividing the NAVD 88
 JU1862.geopotential number by the normal gravity value computed on the
 JU1862.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1862.degrees latitude (g = 980.6199 gals.).
 JU1862
 JU1862.The modeled gravity was interpolated from observed gravity values.
 JU1862
 JU1862;                    North         East    Units  Estimated Accuracy
 JU1862;SPC MD       -   215,890.      503,990.      MT  (+/- 180 meters Scaled)
 JU1862
 JU1862_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ322842(NAD 83)
 JU1862
 JU1862                          SUPERSEDED SURVEY CONTROL
 JU1862
 JU1862  NGVD 29 (11/26/84)   28.270  (m)           92.75   (f) ADJUSTED    1 1
 JU1862
 JU1862.Superseded values are not recommended for survey control.
 JU1862
 JU1862.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1862.See file dsdata.pdf to determine how the superseded data were derived.
 JU1862
 JU1862_STAMPING: A 118 1971
 JU1862_MARK LOGO: CGS
 JU1862
 JU1862  HISTORY     - Date     Condition        Report By
 JU1862  HISTORY     - 1971     MONUMENTED       NGS
 JU1862  HISTORY     - 1982     GOOD             LOCSUR
 JU1862  HISTORY     - 1984     GOOD             NGS
 JU1862  HISTORY     - 19930130 GOOD             USPSQD
 JU1862  HISTORY     - 20140820 MARK NOT FOUND   JARICE
 JU1862
 JU1862                          STATION DESCRIPTION
 JU1862
 JU1862'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1862'2.2 MI E FROM ELKTON.
 JU1862'ABOUT 2.2 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE JUNCTION
 JU1862'OF U.S. HIGHWAY 213 AT ELKTON, ABOUT 0.2 MILE WEST OF THE
 JU1862'MARYLAND-DELAWARE STATE LINE, 42 FEET SOUTH OF THE CENTER LINE
 JU1862'OF THE SOUTH LANES OF THE HIGHWAY, 54 FEET SOUTHEAST OF THE
 JU1862'CENTER OF THE JUNCTION OF THE SOUTH LANES OF THE HIGHWAY AND A
 JU1862'PRIVATE ROAD THAT LEADS SOUTH, 3 FEET NORTHEAST OF BRACE POLE
 JU1862'NUMBER 6623, 3.5 FEET WEST OF A METAL WITNESS POST, ABOUT 1
 JU1862'FOOT BELOW THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-FOOT
 JU1862'SECTION OF COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.
 JU1862'THE DISK IS LEVEL WITH THE SURFACE OF THE GROUND AND IS PROTECTED BY
 JU1862'A 5-INCH METAL PIPE THAT PROJECTS 4 INCHES.  NOTE-- THIS MARK IS
 JU1862'ALSO 2.4 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION
 JU1862'OF STATE HIGHWAY 896 AT GLASGOW, DELAWARE.
 JU1862
 JU1862                          STATION RECOVERY (1982)
 JU1862
 JU1862'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
 JU1862'RECOVERED IN GOOD CONDITION.
 JU1862
 JU1862                          STATION RECOVERY (1984)
 JU1862
 JU1862'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 JU1862'RECOVERED IN GOOD CONDITION.
 JU1862
 JU1862                          STATION RECOVERY (1993)
 JU1862
 JU1862'RECOVERY NOTE BY US POWER SQUADRON 1993 (DMM)
 JU1862'RECOVERED IN GOOD CONDITION.
 JU1862
 JU1862                          STATION RECOVERY (2014)
 JU1862
 JU1862'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JU1862'NOT RECOVERED. NOTE-THE INTERSECTION HAS BEEN RECONSTRUCTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0609 ***********************************************************************
 HU0609  DESIGNATION -  A 119
 HU0609  PID         -  HU0609
 HU0609  STATE/COUNTY-  MD/WICOMICO
 HU0609  COUNTRY     -  US
 HU0609  USGS QUAD   -  SALISBURY (2016)
 HU0609
 HU0609                         *CURRENT SURVEY CONTROL
 HU0609  ______________________________________________________________________
 HU0609* NAD 83(1986) POSITION- 38 22 03.     (N) 075 36 43.     (W)   SCALED
 HU0609* NAVD 88 ORTHO HEIGHT -     7.201 (meters)       23.63  (feet) ADJUSTED
 HU0609  ______________________________________________________________________
 HU0609  GEOID HEIGHT    -        -35.807 (meters)                     GEOID18
 HU0609  DYNAMIC HEIGHT  -          7.196 (meters)       23.61  (feet) COMP
 HU0609  MODELED GRAVITY -    980,005.7   (mgal)                       NAVD 88
 HU0609
 HU0609  VERT ORDER      -  FIRST     CLASS II
 HU0609
 HU0609.The horizontal coordinates were scaled from a map and have
 HU0609.an estimated accuracy of +/- 6 seconds.
 HU0609
 HU0609.The orthometric height was determined by differential leveling and
 HU0609.adjusted by the NATIONAL GEODETIC SURVEY
 HU0609.in June 1991.
 HU0609
 HU0609.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0609.GEOID18 height accuracy estimate available here.
 HU0609
 HU0609.Click photographs - Photos may exist for this station.
 HU0609
 HU0609.The dynamic height is computed by dividing the NAVD 88
 HU0609.geopotential number by the normal gravity value computed on the
 HU0609.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0609.degrees latitude (g = 980.6199 gals.).
 HU0609
 HU0609.The modeled gravity was interpolated from observed gravity values.
 HU0609
 HU0609;                    North         East    Units  Estimated Accuracy
 HU0609;SPC MD       -    78,720.      521,300.      MT  (+/- 180 meters Scaled)
 HU0609
 HU0609_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH465467(NAD 83)
 HU0609
 HU0609                          SUPERSEDED SURVEY CONTROL
 HU0609
 HU0609  NGVD 29 (11/26/84)    7.444  (m)           24.42   (f) ADJUSTED    1 2
 HU0609
 HU0609.Superseded values are not recommended for survey control.
 HU0609
 HU0609.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0609.See file dsdata.pdf to determine how the superseded data were derived.
 HU0609
 HU0609_MARKER: DB = BENCH MARK DISK
 HU0609_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0609_SP_SET: BUILDING
 HU0609_STAMPING: A 119 1971
 HU0609_MARK LOGO: CGS
 HU0609_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0609
 HU0609  HISTORY     - Date     Condition        Report By
 HU0609  HISTORY     - 1971     MONUMENTED       NGS
 HU0609  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0609  HISTORY     - 20050907 MARK NOT FOUND   GEOCAC
 HU0609
 HU0609                          STATION DESCRIPTION
 HU0609
 HU0609'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0609'0.6 MI NW FROM SALISBURY.
 HU0609'ABOUT 0.1 MILE NORTH ALONG DIVISION STREET FROM THE COURTHOUSE AT
 HU0609'SALISBURY, THENCE 0.5 MILE WEST ALONG U.S. HIGHWAY 50, AT THE
 HU0609'SALISBURY MUNICIPAL INCINERATOR BLDG, AT THE INTERSECTION OF THE
 HU0609'HIGHWAY AND DELAWARE AVENUE, 114 FEET NORTH OF THE NORTH CURB OF
 HU0609'THE HIGHWAY, 266 FEET EAST OF THE CENTER LINE OF DELAWARE AVENUE,
 HU0609'29 FEET SOUTH OF THE NORTHWEST CORNER OF THE BUILDING, SET ON THE
 HU0609'TOP OF THE SOUTH END OF THE CONCRETE FOUNDATION AND SILL FOR 2
 HU0609'LARGE METAL DOORS, 0.4 FOOT NORTH OF A BRICK WALL AND DOOR SILL,
 HU0609'ABOUT 6 FEET ABOVE THE LEVEL OF THE HIGHWAY AND 1 1/2 FEET ABOVE
 HU0609'THE LEVEL OF THE CONCRETE SIDEWALK.
 HU0609
 HU0609                          STATION RECOVERY (1997)
 HU0609
 HU0609'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0609'MARK NOT FOUND.
 HU0609
 HU0609                          STATION RECOVERY (2005)
 HU0609
 HU0609'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0609'THE SALISBURY MUNICIPAL INCINERATOR HAS BEEN REPLACED WITH A NEW
 HU0609'POLICE STATION AND VEHICLE YARD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2524 ***********************************************************************
 JV2524  DESIGNATION -  A 12
 JV2524  PID         -  JV2524
 JV2524  STATE/COUNTY-  MD/FREDERICK
 JV2524  COUNTRY     -  US
 JV2524  USGS QUAD   -  FREDERICK (2016)
 JV2524
 JV2524                         *CURRENT SURVEY CONTROL
 JV2524  ______________________________________________________________________
 JV2524* NAD 83(1986) POSITION- 39 23 30.     (N) 077 23 24.     (W)   SCALED
 JV2524* NAVD 88 ORTHO HEIGHT -    91.981 (meters)      301.77  (feet) ADJUSTED
 JV2524  ______________________________________________________________________
 JV2524  GEOID HEIGHT    -        -32.629 (meters)                     GEOID18
 JV2524  DYNAMIC HEIGHT  -         91.931 (meters)      301.61  (feet) COMP
 JV2524  MODELED GRAVITY -    980,089.3   (mgal)                       NAVD 88
 JV2524
 JV2524  VERT ORDER      -  SECOND    CLASS 0
 JV2524
 JV2524.The horizontal coordinates were scaled from a map and have
 JV2524.an estimated accuracy of +/- 6 seconds.
 JV2524
 JV2524.The orthometric height was determined by differential leveling and
 JV2524.adjusted by the NATIONAL GEODETIC SURVEY
 JV2524.in June 1991.
 JV2524
 JV2524.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2524.GEOID18 height accuracy estimate available here.
 JV2524
 JV2524.Click photographs - Photos may exist for this station.
 JV2524
 JV2524.The dynamic height is computed by dividing the NAVD 88
 JV2524.geopotential number by the normal gravity value computed on the
 JV2524.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2524.degrees latitude (g = 980.6199 gals.).
 JV2524
 JV2524.The modeled gravity was interpolated from observed gravity values.
 JV2524
 JV2524;                    North         East    Units  Estimated Accuracy
 JV2524;SPC MD       -   191,560.      366,400.      MT  (+/- 180 meters Scaled)
 JV2524
 JV2524_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ941629(NAD 83)
 JV2524
 JV2524                          SUPERSEDED SURVEY CONTROL
 JV2524
 JV2524  NGVD 29 (11/26/84)   92.199  (m)          302.49   (f) ADJUSTED    2 0
 JV2524
 JV2524.Superseded values are not recommended for survey control.
 JV2524
 JV2524.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2524.See file dsdata.pdf to determine how the superseded data were derived.
 JV2524
 JV2524_MARKER: DB = BENCH MARK DISK
 JV2524_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2524_STAMPING: A 12 1935
 JV2524_MARK LOGO: CGS
 JV2524_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2524+STABILITY: SURFACE MOTION
 JV2524
 JV2524  HISTORY     - Date     Condition        Report By
 JV2524  HISTORY     - 1935     MONUMENTED       CGS
 JV2524
 JV2524                          STATION DESCRIPTION
 JV2524
 JV2524'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2524'1.6 MI N FROM FREDERICK JUNCTION.
 JV2524'ABOUT 1.6 MILES NORTH ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2524'FROM THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY,
 JV2524'ABOUT 105 FEET SOUTH OF THE TWENTIETH POLE NORTH OF MILEPOST 1,
 JV2524'AT A COUNTY-ROAD CROSSING, 42 FEET WEST OF THE CENTER LINE OF
 JV2524'THE TRACK, AND 21 FEET NORTH OF THE CENTER LINE OF THE ROAD.
 JV2524'A STANDARD DISK, STAMPED A 12 1935 AND SET IN THE TOP OF A
 JV2524'CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1006 ***********************************************************************
 HU1006  DESIGNATION -  A 120
 HU1006  PID         -  HU1006
 HU1006  STATE/COUNTY-  MD/DORCHESTER
 HU1006  COUNTRY     -  US
 HU1006  USGS QUAD   -  EAST NEW MARKET (2016)
 HU1006
 HU1006                         *CURRENT SURVEY CONTROL
 HU1006  ______________________________________________________________________
 HU1006* NAD 83(2011) POSITION- 38 32 37.89072(N) 075 56 51.67550(W)   ADJUSTED
 HU1006* NAD 83(2011) ELLIP HT-   -29.164 (meters)        (06/27/12)   ADJUSTED
 HU1006* NAD 83(2011) EPOCH   -  2010.00
 HU1006* NAVD 88 ORTHO HEIGHT -     6.111 (meters)       20.05  (feet) ADJUSTED
 HU1006  ______________________________________________________________________
 HU1006  GEOID HEIGHT    -        -35.270 (meters)                     GEOID18
 HU1006  NAD 83(2011) X  -  1,212,827.920 (meters)                     COMP
 HU1006  NAD 83(2011) Y  - -4,845,535.717 (meters)                     COMP
 HU1006  NAD 83(2011) Z  -  3,952,820.249 (meters)                     COMP
 HU1006  LAPLACE CORR    -         -2.42  (seconds)                    DEFLEC18
 HU1006  DYNAMIC HEIGHT  -          6.108 (meters)       20.04  (feet) COMP
 HU1006  MODELED GRAVITY -    980,016.2   (mgal)                       NAVD 88
 HU1006  OBS GRAVITY     -    980,016.8   (mgal)                       GRAV_OBS
 HU1006
 HU1006  VERT ORDER      -  FIRST     CLASS II
 HU1006
 HU1006  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1006  Standards:
 HU1006         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1006            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1006  -------------------------------------------------------------------
 HU1006  NETWORK    1.75   2.76           0.66   0.76   1.41     -0.09591357
 HU1006  -------------------------------------------------------------------
 HU1006  Click here for local accuracies and other accuracy information.
 HU1006
 HU1006.The horizontal coordinates were established by GPS observations
 HU1006.and adjusted by the National Geodetic Survey in June 2012.
 HU1006
 HU1006.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1006.been affixed to the stable North American tectonic plate. See 
 HU1006.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1006
 HU1006.The horizontal coordinates are valid at the epoch date displayed above
 HU1006.which is a decimal equivalence of Year/Month/Day.
 HU1006
 HU1006.The orthometric height was determined by differential leveling and
 HU1006.adjusted by the NATIONAL GEODETIC SURVEY
 HU1006.in June 1991.
 HU1006
 HU1006.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1006.GEOID18 height accuracy estimate available here.
 HU1006
 HU1006.Click photographs - Photos may exist for this station.
 HU1006
 HU1006.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1006
 HU1006.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1006
 HU1006.The ellipsoidal height was determined by GPS observations
 HU1006.and is referenced to NAD 83.
 HU1006
 HU1006.The dynamic height is computed by dividing the NAVD 88
 HU1006.geopotential number by the normal gravity value computed on the
 HU1006.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1006.degrees latitude (g = 980.6199 gals.).
 HU1006
 HU1006.The modeled gravity was interpolated from observed gravity values.
 HU1006
 HU1006.The observed gravity was obtained from relative gravimeter ties
 HU1006.to the IGSN71 gravity network.
 HU1006
 HU1006. The following values were computed from the NAD 83(2011) position.
 HU1006
 HU1006;                    North         East     Units Scale Factor Converg.
 HU1006;SPC MD       -    97,900.488   491,735.326   MT  0.99996653   +0 39 37.7
 HU1006;SPC MD       -   321,195.18  1,613,301.65   sFT  0.99996653   +0 39 37.7
 HU1006;UTM  18      - 4,266,585.668   417,412.936   MT  0.99968399   -0 35 26.0
 HU1006
 HU1006!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1006!SPC MD       -   1.00000458  x   0.99996653  =   0.99997111
 HU1006!UTM  18      -   1.00000458  x   0.99968399  =   0.99968856
 HU1006
 HU1006:                Primary Azimuth Mark                     Grid Az
 HU1006:SPC MD       -  A 120 AZ MK                              338 58 17.6
 HU1006:UTM  18      -  A 120 AZ MK                              340 13 21.3
 HU1006
 HU1006_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1741266585(NAD 83)
 HU1006
 HU1006|---------------------------------------------------------------------|
 HU1006| PID    Reference Object                     Distance      Geod. Az  |
 HU1006|                                                           dddmmss.s |
 HU1006| DJ3496 A 120 AZ MK                         APPROX. 0.5 KM 3393755.3 |
 HU1006|---------------------------------------------------------------------|
 HU1006
 HU1006                          SUPERSEDED SURVEY CONTROL
 HU1006
 HU1006  NAD 83(2007)-  38 32 37.89108(N)    075 56 51.67668(W) AD(2002.00) 1
 HU1006  ELLIP H (04/02/09)  -29.159  (m)                       GP(2002.00) 4 1
 HU1006  NAD 83(1991)-  38 32 37.89084(N)    075 56 51.67594(W) AD(       ) 1
 HU1006  ELLIP H (10/15/07)  -29.124  (m)                       GP(       ) 4 1
 HU1006  NAVD 88               6.11   (m)           20.0    (f) LEVELING    3  
 HU1006  NGVD 29 (11/26/84)    6.346  (m)           20.82   (f) ADJUSTED    1 2
 HU1006
 HU1006.Superseded values are not recommended for survey control.
 HU1006
 HU1006.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1006.See file dsdata.pdf to determine how the superseded data were derived.
 HU1006
 HU1006_MARKER: DB = BENCH MARK DISK
 HU1006_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HU1006_STAMPING: A 120 1971
 HU1006_MARK LOGO: CGS
 HU1006_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU1006_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1006+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2007
 HU1006
 HU1006  HISTORY     - Date     Condition        Report By
 HU1006  HISTORY     - 1971     MONUMENTED       NGS
 HU1006  HISTORY     - 20020624 GOOD             MDSHA
 HU1006  HISTORY     - 20021127 GOOD             USPSQD
 HU1006  HISTORY     - 20041124 GOOD             USPSQD
 HU1006  HISTORY     - 20060329 POOR             USPSQD
 HU1006  HISTORY     - 20070330 GOOD             USPSQD
 HU1006
 HU1006                          STATION DESCRIPTION
 HU1006
 HU1006'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU1006'AT LINKWOOD.
 HU1006'AT LINKWOOD, 33.0 FEET NORTH OF THE NORTHEAST CORNER OF THE POST
 HU1006'OFFICE, 65 FEET WEST OF THE CENTER LINE OF THE WEST LANES OF U.S.
 HU1006'HIGHWAY 50, 60 FEET NORTH-NORTHWEST OF THE NORTH END OF A
 HU1006'FOUNDATION FOR GAS PUMPS, 104 1/2 FEET SOUTH OF TELEPHONE POLE
 HU1006'NUMBER 577, 32 1/2 FEET WEST OF THE WEST CONCRETE CURB OF A NARROW
 HU1006'ISLAND BETWEEN THE HIGHWAY AND THE POST OFFICE, AND ON THE TOP
 HU1006'OF A COPPER COATED ROD WHICH IS 2 INCHES BELOW THE SURFACE OF
 HU1006'THE GROUND AND IS PROTECTED BY A 4-INCH ORANGEBURG PIPE THAT IS
 HU1006'1 INCH BELOW THE SURFACE OF THE GROUND.  THE ROD WAS DRIVEN TO
 HU1006'REFUSAL AT A DEPTH OF 43 FEET.
 HU1006
 HU1006                          STATION RECOVERY (2002)
 HU1006
 HU1006'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 HU1006'RECOVERED AS DESCRIBED.
 HU1006
 HU1006                          STATION RECOVERY (2002)
 HU1006
 HU1006'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HU1006'MARK IS AT THE BASE OF A METAL POST WITH SIGN BM249, 2.6 FT NW OF A
 HU1006'METAL FLAG POLE AND 6 INCHES BELOW GROUND LEVEL.  GAS STATION AND PUMP
 HU1006'FOUNDATIONS NO LONGER EXIST.
 HU1006
 HU1006                          STATION RECOVERY (2004)
 HU1006
 HU1006'RECOVERY NOTE BY US POWER SQUADRON 2004 (JKW)
 HU1006'RECOVERED IN GOOD CONDITION.
 HU1006
 HU1006                          STATION RECOVERY (2006)
 HU1006
 HU1006'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU1006'THERE IS A WITNESS POST MARKED BM 249 AT THIS LOCATION AT THE LINKWOOD
 HU1006'POST OFFICE.  THERE IS A PILE OF GRAVEL SCRAPINGS 8 FEET BY 4 FEET BY
 HU1006'3 FEET ON TOP OF THE MARK.  THIS IS ALSO 7.5 MILES FROM THE CHOPTANK
 HU1006'RIVER BRIDGE IN CAMBRIDGE.
 HU1006
 HU1006                          STATION RECOVERY (2007)
 HU1006
 HU1006'RECOVERY NOTE BY US POWER SQUADRON 2007 (NLH)
 HU1006'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ3496 ***********************************************************************
 DJ3496  DESIGNATION -  A 120 AZ MK
 DJ3496  PID         -  DJ3496
 DJ3496  STATE/COUNTY-  MD/DORCHESTER
 DJ3496  COUNTRY     -  US
 DJ3496  USGS QUAD   -  EAST NEW MARKET (2016)
 DJ3496
 DJ3496                         *CURRENT SURVEY CONTROL
 DJ3496  ______________________________________________________________________
 DJ3496* NAD 83(2011) POSITION- 38 32 53.70551(N) 075 56 59.15210(W)   ADJUSTED
 DJ3496* NAD 83(2011) ELLIP HT-   -28.885 (meters)        (06/27/12)   ADJUSTED
 DJ3496* NAD 83(2011) EPOCH   -  2010.00
 DJ3496* NAVD 88 ORTHO HEIGHT -     6.4   (meters)       21.    (feet) GPS OBS
 DJ3496  ______________________________________________________________________
 DJ3496  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DJ3496  GEOID HEIGHT    -        -35.233 (meters)                     GEOID03
 DJ3496  GEOID HEIGHT    -        -35.262 (meters)                     GEOID18
 DJ3496  NAD 83(2011) X  -  1,212,578.561 (meters)                     COMP
 DJ3496  NAD 83(2011) Y  - -4,845,285.102 (meters)                     COMP
 DJ3496  NAD 83(2011) Z  -  3,953,201.818 (meters)                     COMP
 DJ3496  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 DJ3496
 DJ3496  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ3496  Standards:
 DJ3496         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ3496            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ3496  -------------------------------------------------------------------
 DJ3496  NETWORK    1.70   2.63           0.64   0.74   1.34     -0.10125038
 DJ3496  -------------------------------------------------------------------
 DJ3496  Click here for local accuracies and other accuracy information.
 DJ3496
 DJ3496.The horizontal coordinates were established by GPS observations
 DJ3496.and adjusted by the National Geodetic Survey in June 2012.
 DJ3496
 DJ3496.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ3496.been affixed to the stable North American tectonic plate. See 
 DJ3496.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ3496
 DJ3496.The horizontal coordinates are valid at the epoch date displayed above
 DJ3496.which is a decimal equivalence of Year/Month/Day.
 DJ3496
 DJ3496.The orthometric height was determined by GPS observations and a
 DJ3496.high-resolution geoid model.
 DJ3496
 DJ3496.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ3496.GEOID18 height accuracy estimate available here.
 DJ3496
 DJ3496.Click photographs - Photos may exist for this station.
 DJ3496
 DJ3496.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ3496
 DJ3496.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ3496
 DJ3496.The ellipsoidal height was determined by GPS observations
 DJ3496.and is referenced to NAD 83.
 DJ3496
 DJ3496. The following values were computed from the NAD 83(2011) position.
 DJ3496
 DJ3496;                    North         East     Units Scale Factor Converg.
 DJ3496;SPC MD       -    98,386.007   491,548.676   MT  0.99996610   +0 39 33.0
 DJ3496;SPC MD       -   322,788.09  1,612,689.28   sFT  0.99996610   +0 39 33.0
 DJ3496;UTM  18      - 4,267,075.009   417,236.981   MT  0.99968435   -0 35 30.8
 DJ3496
 DJ3496!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ3496!SPC MD       -   1.00000453  x   0.99996610  =   0.99997063
 DJ3496!UTM  18      -   1.00000453  x   0.99968435  =   0.99968888
 DJ3496
 DJ3496:                Primary Azimuth Mark                     Grid Az
 DJ3496:SPC MD       -  A 120                                    158 58 17.6
 DJ3496:UTM  18      -  A 120                                    160 13 21.4
 DJ3496
 DJ3496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1723667075(NAD 83)
 DJ3496
 DJ3496|---------------------------------------------------------------------|
 DJ3496| PID    Reference Object                     Distance      Geod. Az  |
 DJ3496|                                                           dddmmss.s |
 DJ3496| HU1006 A 120                               APPROX. 0.5 KM 1593750.6 |
 DJ3496|---------------------------------------------------------------------|
 DJ3496
 DJ3496                          SUPERSEDED SURVEY CONTROL
 DJ3496
 DJ3496  NAD 83(2007)-  38 32 53.70587(N)    075 56 59.15328(W) AD(2002.00) 1
 DJ3496  ELLIP H (04/02/09)  -28.880  (m)                       GP(2002.00) 4 1
 DJ3496  NAD 83(1991)-  38 32 53.70563(N)    075 56 59.15254(W) AD(       ) 1
 DJ3496  ELLIP H (10/15/07)  -28.845  (m)                       GP(       ) 4 1
 DJ3496
 DJ3496.Superseded values are not recommended for survey control.
 DJ3496
 DJ3496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ3496.See file dsdata.pdf to determine how the superseded data were derived.
 DJ3496
 DJ3496_MARKER: DD = SURVEY DISK
 DJ3496_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ3496_STAMPING: A 120 AZ 1991
 DJ3496_MARK LOGO: MDSHA
 DJ3496_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ3496_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ3496+STABILITY: SURFACE MOTION
 DJ3496_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ3496+SATELLITE: SATELLITE OBSERVATIONS - June 24, 2002
 DJ3496
 DJ3496  HISTORY     - Date     Condition        Report By
 DJ3496  HISTORY     - 1991     MONUMENTED       MDSHA
 DJ3496  HISTORY     - 20020624 GOOD             MDSHA
 DJ3496
 DJ3496                          STATION DESCRIPTION
 DJ3496
 DJ3496'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 DJ3496'THE MARK IS LOCATED ABOUT 2.9 MI (4.7 KM) NORTHEAST OF AIREY, 2.9 MI
 DJ3496'(4.7 KM) EAST OF MOUNT HOLLY AND 0.6 MI (0.9 KM) NORTH-NORTHWEST OF
 DJ3496'LINKWOOD.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DJ3496'
 DJ3496'TO REACH THE POST OFFICE IN LINKWOOD, GO NORTHWEST ON US ROUTE 50 FOR
 DJ3496'0.3 MI (0.5 KM) TO THE MARK ON THE RIGHT.
 DJ3496'
 DJ3496'IT IS 20.8 FT (6.3 M) EAST OF THE WESTBOUND LANES OF US ROUTE 50, 14.3
 DJ3496'FT (4.4 M) NORTHWEST OF A POWER POLE NUMBER EA/501/79, 6.5 FT (2.0 M)
 DJ3496'SOUTHEAST OF THE SOUTHEAST CORNER OF A CONCRETE HEADWALL, AND 22.0 FT
 DJ3496'(6.7 M) SOUTH OF THE CENTER LINE OF A GRAVEL FARM ENTRANCE TO HOUSE
 DJ3496'NUMBER 3814 OCEAN GATEWAY AND IS SET IN THE TOP OF A 8-IN (20 CM)
 DJ3496'ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0396 ***********************************************************************
 JV0396  DESIGNATION -  A 121
 JV0396  PID         -  JV0396
 JV0396  STATE/COUNTY-  MD/HARFORD
 JV0396  COUNTRY     -  US
 JV0396  USGS QUAD   -  EDGEWOOD (2016)
 JV0396
 JV0396                         *CURRENT SURVEY CONTROL
 JV0396  ______________________________________________________________________
 JV0396* NAD 83(1986) POSITION- 39 26 52.2    (N) 076 18 06.2    (W)   HD_HELD2
 JV0396* NAVD 88 ORTHO HEIGHT -    27.970 (meters)       91.76  (feet) ADJUSTED
 JV0396  ______________________________________________________________________
 JV0396  GEOID HEIGHT    -        -33.079 (meters)                     GEOID18
 JV0396  DYNAMIC HEIGHT  -         27.955 (meters)       91.72  (feet) COMP
 JV0396  MODELED GRAVITY -    980,107.5   (mgal)                       NAVD 88
 JV0396  OBS GRAVITY     -    980,104.8   (mgal)                       GRAV_OBS
 JV0396
 JV0396  VERT ORDER      -  FIRST     CLASS I
 JV0396
 JV0396.The horizontal coordinates were established by autonomous hand held GPS
 JV0396.observations and have an estimated accuracy of +/- 10 meters.
 JV0396
 JV0396.The orthometric height was determined by differential leveling and
 JV0396.adjusted by the NATIONAL GEODETIC SURVEY
 JV0396.in June 1991.
 JV0396
 JV0396.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0396.GEOID18 height accuracy estimate available here.
 JV0396
 JV0396.Click photographs - Photos may exist for this station.
 JV0396
 JV0396.The dynamic height is computed by dividing the NAVD 88
 JV0396.geopotential number by the normal gravity value computed on the
 JV0396.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0396.degrees latitude (g = 980.6199 gals.).
 JV0396
 JV0396.The modeled gravity was interpolated from observed gravity values.
 JV0396
 JV0396.The observed gravity was obtained from relative gravimeter ties
 JV0396.to the IGSN71 gravity network.
 JV0396
 JV0396;                    North         East    Units  Estimated Accuracy
 JV0396;SPC MD       -   197,953.      460,106.      MT  (+/- 10 meters HH2 GPS)
 JV0396
 JV0396_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8799367283(NAD 83)
 JV0396
 JV0396                          SUPERSEDED SURVEY CONTROL
 JV0396
 JV0396  NGVD 29 (11/26/84)   28.216  (m)           92.57   (f) ADJUSTED    1 1
 JV0396
 JV0396.Superseded values are not recommended for survey control.
 JV0396
 JV0396.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0396.See file dsdata.pdf to determine how the superseded data were derived.
 JV0396
 JV0396_MARKER: DB = BENCH MARK DISK
 JV0396_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0396_STAMPING: A 121 1971
 JV0396_MARK LOGO: CGS
 JV0396_PROJECTION: FLUSH
 JV0396_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0396_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0396+SATELLITE: SATELLITE OBSERVATIONS - October 10, 1989
 JV0396_ROD/PIPE-DEPTH: 3.1 meters
 JV0396
 JV0396  HISTORY     - Date     Condition        Report By
 JV0396  HISTORY     - 1971     MONUMENTED       NGS
 JV0396  HISTORY     - 19891010 GOOD             NGS
 JV0396  HISTORY     - 20090618 GOOD             NGS
 JV0396  HISTORY     - 20160512 POOR             USPSQD
 JV0396
 JV0396                          STATION DESCRIPTION
 JV0396
 JV0396'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0396'2.2 MI NE FROM JOPPA.
 JV0396'ABOUT 2.2 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE
 JV0396'TRINITY LUTHERAN CHURCH AND CEMETERY AT JOPPA, 0.3 MILE
 JV0396'SOUTHWEST OF THE NEW WILLIAM PACA ELEMENTARY SCHOOL, 100 FEET
 JV0396'WEST OF THE CENTER OF THE INTERSECTION OF THE HIGHWAY AND STATE
 JV0396'HIGHWAY 24, 54 FEET NORTHWEST OF THE CENTER LINE OF STATE
 JV0396'HIGHWAY 7, 62 FEET SOUTHWEST OF THE CENTER LINE OF STATE
 JV0396'HIGHWAY 24, 2 1/2 FEET NORTHEAST OF A LARGE POWER POLE THAT IS
 JV0396'NUMBERED 233789, 3.0 FEET SOUTHWEST OF A METAL WITNESS POST,
 JV0396'ABOUT 3 FEET BELOW THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A
 JV0396'COPPER COATED ROD WHICH IS LEVEL WITH THE SURFACE OF THE GROUND
 JV0396'AND WHICH IS PROTECTED BY A 6-INCH TILE PROJECTING 1 INCH.  THE
 JV0396'ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 10 1/4 FEET.
 JV0396
 JV0396                          STATION RECOVERY (1989)
 JV0396
 JV0396'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0396'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  4.0 KM
 JV0396'(2.50 MI) NORTHEASTERLY ALONG STATE HIGHWAY 7 FROM ITS JUNCTION WITH
 JV0396'STATE HIGHWAY 152 IN JOPPA, 18.9 M (62.0 FT) SOUTHWEST OF THE
 JV0396'CENTERLINE OF STATE HIGHWAY 24, 16.5 M (54.1 FT) NORTHWEST OF THE
 JV0396'CENTERLINE OF THE HIGHWAY, 0.8 M (2.6 FT) NORTHEAST OF UTILITY POLE
 JV0396'NUMBER 233789, LEVEL WITH HIGHWAY 7, AND CRIMPED TO A COPPER-COATED
 JV0396'STEEL ROD THAT IS ENCASED IN A 6-INCH TILE THAT IS FLUSH WITH THE
 JV0396'GROUND SURFACE.
 JV0396
 JV0396                          STATION RECOVERY (2009)
 JV0396
 JV0396'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009
 JV0396'RECOVERED ON PROPERTY OF 'MY THREE SONS' RESTAURANT. MARK PROJECTS 0.5
 JV0396'INCHES AND PVC CASING IS DAMAGED.  THE WITNESS POST IS GONE.
 JV0396
 JV0396                          STATION RECOVERY (2016)
 JV0396
 JV0396'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 JV0396'THE DISK IS GONE, THE PVC CASING IS DAMAGED BUT STILL PROTECTING THE
 JV0396'STEEL ROD PROTRUDING 1.5 INCHES (4 CM) ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0291 ***********************************************************************
 JV0291  DESIGNATION -  A 122
 JV0291  PID         -  JV0291
 JV0291  STATE/COUNTY-  MD/QUEEN ANNES
 JV0291  COUNTRY     -  US
 JV0291  USGS QUAD   -  CHESTERTOWN (2017)
 JV0291
 JV0291                         *CURRENT SURVEY CONTROL
 JV0291  ______________________________________________________________________
 JV0291* NAD 83(2011) POSITION- 39 07 53.35115(N) 076 00 02.82532(W)   ADJUSTED
 JV0291* NAD 83(2011) ELLIP HT-   -13.747 (meters)        (02/02/22)   ADJUSTED
 JV0291* NAD 83(2011) EPOCH   -  2010.00
 JV0291* NAVD 88 ORTHO HEIGHT -    19.931 (meters)       65.39  (feet) ADJUSTED
 JV0291  ______________________________________________________________________
 JV0291  GEOID HEIGHT    -        -33.659 (meters)                     GEOID18
 JV0291  NAD 83(2011) X  -  1,198,443.618 (meters)                     COMP
 JV0291  NAD 83(2011) Y  - -4,806,975.313 (meters)                     COMP
 JV0291  NAD 83(2011) Z  -  4,003,641.947 (meters)                     COMP
 JV0291  LAPLACE CORR    -         -3.09  (seconds)                    DEFLEC18
 JV0291  DYNAMIC HEIGHT  -         19.920 (meters)       65.35  (feet) COMP
 JV0291  MODELED GRAVITY -    980,101.6   (mgal)                       NAVD 88
 JV0291
 JV0291  VERT ORDER      -  FIRST     CLASS II
 JV0291
 JV0291  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0291  Standards:
 JV0291         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0291            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0291  -------------------------------------------------------------------
 JV0291  NETWORK    0.83   1.94           0.36   0.31   0.99     -0.16833102
 JV0291  -------------------------------------------------------------------
 JV0291  Click here for local accuracies and other accuracy information.
 JV0291
 JV0291.The horizontal coordinates were established by GPS observations
 JV0291.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 JV0291
 JV0291.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0291.been affixed to the stable North American tectonic plate. See 
 JV0291.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0291
 JV0291.The horizontal coordinates are valid at the epoch date displayed above
 JV0291.which is a decimal equivalence of Year/Month/Day.
 JV0291
 JV0291.The orthometric height was determined by differential leveling and
 JV0291.adjusted by the NATIONAL GEODETIC SURVEY
 JV0291.in June 1991.
 JV0291
 JV0291.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0291.GEOID18 height accuracy estimate available here.
 JV0291
 JV0291.Click photographs - Photos may exist for this station.
 JV0291
 JV0291.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0291
 JV0291.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0291
 JV0291.The ellipsoidal height was determined by GPS observations
 JV0291.and is referenced to NAD 83.
 JV0291
 JV0291.The dynamic height is computed by dividing the NAVD 88
 JV0291.geopotential number by the normal gravity value computed on the
 JV0291.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0291.degrees latitude (g = 980.6199 gals.).
 JV0291
 JV0291.The modeled gravity was interpolated from observed gravity values.
 JV0291
 JV0291. The following values were computed from the NAD 83(2011) position.
 JV0291
 JV0291;                    North         East     Units Scale Factor Converg.
 JV0291;SPC MD       -   163,075.572   486,392.786   MT  0.99995978   +0 37 37.7
 JV0291;SPC MD       -   535,023.77  1,595,773.67   sFT  0.99995978   +0 37 37.7
 JV0291;UTM  18      - 4,331,844.730   413,500.003   MT  0.99969213   -0 37 53.9
 JV0291
 JV0291!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0291!SPC MD       -   1.00000216  x   0.99995978  =   0.99996194
 JV0291!UTM  18      -   1.00000216  x   0.99969213  =   0.99969429
 JV0291
 JV0291_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1350031844(NAD 83)
 JV0291
 JV0291                          SUPERSEDED SURVEY CONTROL
 JV0291
 JV0291  NGVD 29 (11/26/84)   20.169  (m)           66.17   (f) ADJUSTED    1 2
 JV0291
 JV0291.Superseded values are not recommended for survey control.
 JV0291
 JV0291.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0291.See file dsdata.pdf to determine how the superseded data were derived.
 JV0291
 JV0291_MARKER: DB = BENCH MARK DISK
 JV0291_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0291+WITH SETTING: INTO GROUND
 JV0291_STAMPING: A 122 1971
 JV0291_MARK LOGO: CGS
 JV0291_PROJECTION: FLUSH
 JV0291_MAGNETIC: I = MARKER IS A STEEL ROD
 JV0291_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0291_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0291+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2025
 JV0291
 JV0291  HISTORY     - Date     Condition        Report By
 JV0291  HISTORY     - 1971     MONUMENTED       NGS
 JV0291  HISTORY     - 1980     GOOD             LOCSUR
 JV0291  HISTORY     - 19901128 MARK NOT FOUND   USPSQD
 JV0291  HISTORY     - 20000104 GOOD             USPSQD
 JV0291  HISTORY     - 20050220 GOOD             USPSQD
 JV0291  HISTORY     - 20150722 GOOD             USPSQD
 JV0291  HISTORY     - 20210303 GOOD             MDSHA
 JV0291  HISTORY     - 20250821 GOOD             PROFLN
 JV0291
 JV0291                          STATION DESCRIPTION
 JV0291
 JV0291'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0291'ABOUT 1.6 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JV0291'JUNCTION OF STATE HIGHWAY 300 AT CHURCH HILL, 0.2 MILE NORTHEAST
 JV0291'OF THE JUNCTION OF ISLAND CREEK ROAD, 64 1/2 FEET NORTHWEST OF
 JV0291'AND ACROSS THE HIGHWAY FROM POWER LINE POLE NO. 221, 29 FEET
 JV0291'NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 6 FEET NORTHEAST OF
 JV0291'A CABLE LINE POLE, 1.9 FEET SOUTHWEST OF A METAL WITNESS POST,
 JV0291'2 FEET BELOW THE LEVEL OF THE HIGHWAY, ON THE TOP OF A 4 FOOT
 JV0291'COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.
 JV0291'THE DISK IS FLUSH WITH THE LEVEL OF THE GROUND AND ENCASED IN A
 JV0291'4 INCH STEEL PIPE PROJECTING 1 INCH ABOVE THE LEVEL OF THE
 JV0291'GROUND.
 JV0291
 JV0291                          STATION RECOVERY (1980)
 JV0291
 JV0291'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1980
 JV0291'RECOVERED IN GOOD CONDITION.
 JV0291
 JV0291                          STATION RECOVERY (1990)
 JV0291
 JV0291'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0291'MARK NOT FOUND.
 JV0291
 JV0291                          STATION RECOVERY (2000)
 JV0291
 JV0291'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 JV0291'STATE ROUTE 213 HAS BEEN EXTENSIVELY STRAIGHTENED AND WIDENED,
 JV0291'BYPASSING SEVERAL SMALL TOWNS AND INTERSECTIONS MENTIONED IN THE 1971
 JV0291'DESCRIPTION.  THE MARK IS 7.45 MI. NORTH ALONG RTE 213 FROM THE Q.A.
 JV0291'CTY. COURTHOUSE IN CENTREVILLE, ON THE WEST SIDE OF 213, 1 FOOT SOUTH
 JV0291'OF A METAL WITNESS POST AND 5.5 FEET NORTH OF TELEPHONE POLE 364.
 JV0291
 JV0291                          STATION RECOVERY (2005)
 JV0291
 JV0291'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JV0291'RECOVERED IN GOOD CONDITION.
 JV0291
 JV0291                          STATION RECOVERY (2015)
 JV0291
 JV0291'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0291'RECOVERED AS DESCRIBED.
 JV0291
 JV0291                          STATION RECOVERY (2021)
 JV0291
 JV0291'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV0291'RECOVERED IN GOOD CONDITION.
 JV0291
 JV0291                          STATION RECOVERY (2025)
 JV0291
 JV0291'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0291'THE MARK IS NOW UNDER A 10 INCH (25 CM) DIAMETER UTILITY BOX.  THE
 JV0291'MARK IS 240 FT (73.2 M) NORTHEAST OF A ROAD SIGN 'ISLAND CRK ROAD',
 JV0291'171 FT (52.1 M) SOUTHWEST OF UTILITY POLE BELIEVED TO BE NUMBER 363
 JV0291'WHICH IS ABOUT OPPOSITE THE LONG GRAVEL DRIVEWAY TO HOUSE 3830, 157 FT
 JV0291'(47.9 M) SOUTHWEST OF THAT DRIVEWAY EXTENDED, OPPOSITE A POINT THAT IS
 JV0291'20 FT (6.1 M) NORTHEAST OF UTILITY POLE 35659-21131 WITH THREE
 JV0291'TRANSFORMERS, 31 FT (9.4 M) NORTHWEST OF THE HIGHWAY, A FOOT OR TWO
 JV0291'TOWARD THE HIGHWAY FROM OVERHEAD POWER LINES, 1 FT (0.3 M) TOWARD THE
 JV0291'HIGHWAY FROM A SMALL WITNESS FENCE POST.  THE BOX PROJECTS 2 INCHES (5
 JV0291'CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0629 ***********************************************************************
 JV0629  DESIGNATION -  A 123
 JV0629  PID         -  JV0629
 JV0629  STATE/COUNTY-  MD/HOWARD
 JV0629  COUNTRY     -  US
 JV0629  USGS QUAD   -  SAVAGE (2016)
 JV0629
 JV0629                         *CURRENT SURVEY CONTROL
 JV0629  ______________________________________________________________________
 JV0629* NAD 83(1986) POSITION- 39 11 11.9    (N) 076 45 36.0    (W)   HD_HELD2
 JV0629* NAVD 88 ORTHO HEIGHT -    59.745 (meters)      196.01  (feet) ADJUSTED
 JV0629  ______________________________________________________________________
 JV0629  GEOID HEIGHT    -        -32.420 (meters)                     GEOID18
 JV0629  DYNAMIC HEIGHT  -         59.713 (meters)      195.91  (feet) COMP
 JV0629  MODELED GRAVITY -    980,092.2   (mgal)                       NAVD 88
 JV0629  OBS GRAVITY     -    980,097.5   (mgal)                       GRAV_OBS
 JV0629
 JV0629  VERT ORDER      -  SECOND    CLASS I
 JV0629
 JV0629.The horizontal coordinates were established by autonomous hand held GPS
 JV0629.observations and have an estimated accuracy of +/- 10 meters.
 JV0629
 JV0629.The orthometric height was determined by differential leveling and
 JV0629.adjusted by the NATIONAL GEODETIC SURVEY
 JV0629.in March 2010.
 JV0629
 JV0629.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0629.GEOID18 height accuracy estimate available here.
 JV0629
 JV0629.Click photographs - Photos may exist for this station.
 JV0629
 JV0629.The dynamic height is computed by dividing the NAVD 88
 JV0629.geopotential number by the normal gravity value computed on the
 JV0629.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0629.degrees latitude (g = 980.6199 gals.).
 JV0629
 JV0629.The modeled gravity was interpolated from observed gravity values.
 JV0629
 JV0629.The observed gravity was obtained from relative gravimeter ties
 JV0629.to the IGSN71 gravity network.
 JV0629
 JV0629;                    North         East    Units  Estimated Accuracy
 JV0629;SPC MD       -   168,753.      420,735.      MT  (+/- 10 meters HH2 GPS)
 JV0629
 JV0629_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4799438963(NAD 83)
 JV0629
 JV0629                          SUPERSEDED SURVEY CONTROL
 JV0629
 JV0629  NAVD 88 (06/15/91)   59.735  (m)          195.98   (f) SUPERSEDED  1 1
 JV0629  NGVD 29 (11/26/84)   59.972  (m)          196.76   (f) ADJUSTED    1 1
 JV0629
 JV0629.Superseded values are not recommended for survey control.
 JV0629
 JV0629.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0629.See file dsdata.pdf to determine how the superseded data were derived.
 JV0629
 JV0629_MARKER: DB = BENCH MARK DISK
 JV0629_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0629_STAMPING: A 123 1971
 JV0629_MARK LOGO: CGS
 JV0629_PROJECTION: FLUSH
 JV0629_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0629_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0629+SATELLITE: SATELLITE OBSERVATIONS - July 27, 2021
 JV0629
 JV0629  HISTORY     - Date     Condition        Report By
 JV0629  HISTORY     - 1971     MONUMENTED       NGS
 JV0629  HISTORY     - 1984     GOOD             LOCSUR
 JV0629  HISTORY     - 20031225 GOOD             USPSQD
 JV0629  HISTORY     - 20070414 GOOD             GEOCAC
 JV0629  HISTORY     - 20070426 GOOD             MDSHA
 JV0629  HISTORY     - 20210727 GOOD             MD-003
 JV0629
 JV0629                          STATION DESCRIPTION
 JV0629
 JV0629'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0629'0.9 MI NW FROM DORSEY.
 JV0629'ABOUT 0.9 MILE NORTHWEST ALONG STATE HIGHWAY 176 FROM THE
 JV0629'HIGHWAY UNDERPASS FOR THE BALTIMORE AND OHIO RAILROAD AT DORSEY,
 JV0629'ABOUT 243 FEET SOUTHWEST OF THE JUNCTION OF THE HIGHWAY AND
 JV0629'U.S. HIGHWAY 1, AT THE NORTHEAST ENTRANCE TO MEADOWRIDGE
 JV0629'MEMORIAL PARK, 33 FEET NORTHWEST OF THE CENTER LINE OF U.S.
 JV0629'HIGHWAY 1, 64 FEET NORTH OF THE CENTER OF THE INTERSECTION OF
 JV0629'THE HIGHWAY AND THE NORTHEAST DRIVEWAY TO THE PARK, 1 FOOT
 JV0629'NORTH OF THE NORTHEAST CORNER OF A SEMICIRCULAR BRICK WALL ON THE
 JV0629'NORTH SIDE OF THE DRIVEWAY, AND ON THE TOP OF A COPPER COATED
 JV0629'ROD WHICH IS LEVEL WITH THE SURFACE OF THE GROUND AND IS
 JV0629'PROTECTED BY AN IRON PIPE PROJECTING 1 INCH.  THE ROD WAS
 JV0629'DRIVEN TO REFUSAL AT A DEPTH OF 20 FEET.
 JV0629
 JV0629                          STATION RECOVERY (1984)
 JV0629
 JV0629'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1984
 JV0629'RECOVERED IN GOOD CONDITION.
 JV0629
 JV0629                          STATION RECOVERY (2003)
 JV0629
 JV0629'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV0629'RECOVERED IN GOOD CONDITION.
 JV0629
 JV0629                          STATION RECOVERY (2007)
 JV0629
 JV0629'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JV0629'RECOVERED IN GOOD CONDITION.
 JV0629
 JV0629                          STATION RECOVERY (2007)
 JV0629
 JV0629'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV0629'RECOVERED AS DESCRIBED.
 JV0629
 JV0629                          STATION RECOVERY (2021)
 JV0629
 JV0629'RECOVERY NOTE BY ANNE ARUNDEL COUNTY MARYLAND 2021 (CK)
 JV0629'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0272 ***********************************************************************
 HV0272  DESIGNATION -  A 124
 HV0272  PID         -  HV0272
 HV0272  STATE/COUNTY-  MD/DORCHESTER
 HV0272  COUNTRY     -  US
 HV0272  USGS QUAD   -  CAMBRIDGE (2016)
 HV0272
 HV0272                         *CURRENT SURVEY CONTROL
 HV0272  ______________________________________________________________________
 HV0272* NAD 83(1986) POSITION- 38 31 28.6    (N) 076 07 15.3    (W)   HD_HELD2
 HV0272* NAVD 88 ORTHO HEIGHT -     2.079 (meters)        6.82  (feet) ADJUSTED
 HV0272  ______________________________________________________________________
 HV0272  GEOID HEIGHT    -        -35.034 (meters)                     GEOID18
 HV0272  DYNAMIC HEIGHT  -          2.077 (meters)        6.81  (feet) COMP
 HV0272  MODELED GRAVITY -    980,014.2   (mgal)                       NAVD 88
 HV0272
 HV0272  VERT ORDER      -  FIRST     CLASS II
 HV0272
 HV0272.The horizontal coordinates were established by autonomous hand held GPS
 HV0272.observations and have an estimated accuracy of +/- 10 meters.
 HV0272
 HV0272.The orthometric height was determined by differential leveling and
 HV0272.adjusted by the NATIONAL GEODETIC SURVEY
 HV0272.in June 1991.
 HV0272
 HV0272.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0272.GEOID18 height accuracy estimate available here.
 HV0272
 HV0272.Click photographs - Photos may exist for this station.
 HV0272
 HV0272.The dynamic height is computed by dividing the NAVD 88
 HV0272.geopotential number by the normal gravity value computed on the
 HV0272.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0272.degrees latitude (g = 980.6199 gals.).
 HV0272
 HV0272.The modeled gravity was interpolated from observed gravity values.
 HV0272
 HV0272;                    North         East    Units  Estimated Accuracy
 HV0272;SPC MD       -    95,604.      476,655.      MT  (+/- 10 meters HH2 GPS)
 HV0272
 HV0272_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0229064619(NAD 83)
 HV0272
 HV0272                          SUPERSEDED SURVEY CONTROL
 HV0272
 HV0272  NGVD 29 (11/26/84)    2.313  (m)            7.59   (f) ADJUSTED    1 2
 HV0272
 HV0272.Superseded values are not recommended for survey control.
 HV0272
 HV0272.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0272.See file dsdata.pdf to determine how the superseded data were derived.
 HV0272
 HV0272_MARKER: DB = BENCH MARK DISK
 HV0272_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0272+WITH SETTING: INTO GROUND
 HV0272_STAMPING: A 124 1971
 HV0272_MARK LOGO: CGS
 HV0272_PROJECTION: RECESSED 3 CENTIMETERS
 HV0272_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0272+STABILITY: SURFACE MOTION
 HV0272_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0272+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2014
 HV0272
 HV0272  HISTORY     - Date     Condition        Report By
 HV0272  HISTORY     - 1971     MONUMENTED       NGS
 HV0272  HISTORY     - 20070204 GOOD             USPSQD
 HV0272  HISTORY     - 20140208 GOOD             ARCSHE
 HV0272
 HV0272                          STATION DESCRIPTION
 HV0272
 HV0272'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0272'2.4 MI NE FROM CHURCH CREEK.
 HV0272'ABOUT 2.4 MILES NORTHEAST ALONG STATE HIGHWAY 16 FROM THE POST
 HV0272'OFFICE AT CHURCH CREEK, NEAR THE JUNCTION OF A ROAD WHICH LEADS
 HV0272'NORTHWEST, 38 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY,
 HV0272'107 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 2 FEET
 HV0272'NORTHEAST OF A TELEPHONE POLE, 1.1 FEET SOUTHWEST OF A METAL WITNESS
 HV0272'POST, ABOUT LEVEL WITH THE HIGHWAY, AND ON THE TOP OF A 4-FOOT
 HV0272'SECTION OF COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE
 HV0272'PLATE.  THE DISK IS 1 INCH BELOW THE SURFACE OF THE GROUND AND
 HV0272'IS PROTECTED BY A 4-INCH METAL PIPE THAT IS LEVEL WITH THE GROUND.
 HV0272
 HV0272                          STATION RECOVERY (2007)
 HV0272
 HV0272'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HV0272'JUNE ROAD IS A DRIVEWAY.  THE WITNESS POST IS BROKEN OFF BUT SAYS
 HV0272'BM 46A.  TELEPHONE POLE IS 143.  THE MARK IS LOOSE IN THE GROUND.
 HV0272
 HV0272                          STATION RECOVERY (2014)
 HV0272
 HV0272'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0272'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0697 ***********************************************************************
 JV0697  DESIGNATION -  A 125
 JV0697  PID         -  JV0697
 JV0697  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0697  COUNTRY     -  US
 JV0697  USGS QUAD   -  ROUND BAY (2016)
 JV0697
 JV0697                         *CURRENT SURVEY CONTROL
 JV0697  ______________________________________________________________________
 JV0697* NAD 83(1986) POSITION- 39 05 06.0    (N) 076 33 10.6    (W)   HD_HELD2
 JV0697* NAVD 88 ORTHO HEIGHT -     4.176 (meters)       13.70  (feet) ADJUSTED
 JV0697  ______________________________________________________________________
 JV0697  GEOID HEIGHT    -        -33.065 (meters)                     GEOID18
 JV0697  DYNAMIC HEIGHT  -          4.174 (meters)       13.69  (feet) COMP
 JV0697  MODELED GRAVITY -    980,081.0   (mgal)                       NAVD 88
 JV0697
 JV0697  VERT ORDER      -  FIRST     CLASS II
 JV0697
 JV0697.The horizontal coordinates were established by autonomous hand held GPS
 JV0697.observations and have an estimated accuracy of +/- 10 meters.
 JV0697
 JV0697.The orthometric height was determined by differential leveling and
 JV0697.adjusted by the NATIONAL GEODETIC SURVEY
 JV0697.in June 1991.
 JV0697
 JV0697.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0697.GEOID18 height accuracy estimate available here.
 JV0697
 JV0697.Click photographs - Photos may exist for this station.
 JV0697
 JV0697.The dynamic height is computed by dividing the NAVD 88
 JV0697.geopotential number by the normal gravity value computed on the
 JV0697.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0697.degrees latitude (g = 980.6199 gals.).
 JV0697
 JV0697.The modeled gravity was interpolated from observed gravity values.
 JV0697
 JV0697;                    North         East    Units  Estimated Accuracy
 JV0697;SPC MD       -   157,537.      438,679.      MT  (+/- 10 meters HH2 GPS)
 JV0697
 JV0697_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6568527356(NAD 83)
 JV0697
 JV0697                          SUPERSEDED SURVEY CONTROL
 JV0697
 JV0697  NGVD 29 (11/26/84)    4.422  (m)           14.51   (f) ADJUSTED    1 2
 JV0697
 JV0697.Superseded values are not recommended for survey control.
 JV0697
 JV0697.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0697.See file dsdata.pdf to determine how the superseded data were derived.
 JV0697
 JV0697_MARKER: DB = BENCH MARK DISK
 JV0697_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0697_SP_SET: BOX CULVERT
 JV0697_STAMPING: A 125 1971
 JV0697_MARK LOGO: CGS
 JV0697_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0697+STABILITY: SURFACE MOTION
 JV0697
 JV0697  HISTORY     - Date     Condition        Report By
 JV0697  HISTORY     - 1971     MONUMENTED       NGS
 JV0697
 JV0697                          STATION DESCRIPTION
 JV0697
 JV0697'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0697'6.2 MI SE FROM GLEN BURNIE.
 JV0697'ABOUT 6.15 MILES SOUTHEAST ALONG STATE HIGHWAY 2 FROM THE
 JV0697'POST OFFICE AT ANNE ARUNDEL, ABOUT 0.1 MILE SOUTHEAST OF THE
 JV0697'JUNCTION OF WHITE AVENUE LEADING WEST, SET ON THE TOP OF THE
 JV0697'NORTHWEST END OF THE SOUTHWEST CONCRETE HEADWALL FOR A 10 FOOT
 JV0697'BOX CULVERT UNDER THE HIGHWAY, 37 FEET SOUTHWEST OF THE CENTER
 JV0697'LINE OF THE HIGHWAY, 0.8 FOOT SOUTHEAST OF THE NORTHWEST END
 JV0697'OF THE HEADWALL AND 6 FEET BELOW THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0112 ***********************************************************************
 HV0112  DESIGNATION -  A 127
 HV0112  PID         -  HV0112
 HV0112  STATE/COUNTY-  MD/TALBOT
 HV0112  COUNTRY     -  US
 HV0112  USGS QUAD   -  EASTON (2016)
 HV0112
 HV0112                         *CURRENT SURVEY CONTROL
 HV0112  ______________________________________________________________________
 HV0112* NAD 83(1986) POSITION- 38 50 16.70   (N) 076 03 36.83   (W)   HD_HELD1
 HV0112* NAVD 88 ORTHO HEIGHT -     8.446 (meters)       27.71  (feet) ADJUSTED
 HV0112  ______________________________________________________________________
 HV0112  GEOID HEIGHT    -        -34.556 (meters)                     GEOID18
 HV0112  DYNAMIC HEIGHT  -          8.441 (meters)       27.69  (feet) COMP
 HV0112  MODELED GRAVITY -    980,043.6   (mgal)                       NAVD 88
 HV0112
 HV0112  VERT ORDER      -  SECOND    CLASS I
 HV0112
 HV0112.The horizontal coordinates were determined by differentially corrected
 HV0112.hand held GPS observations or other comparable positioning techniques
 HV0112.and have an estimated accuracy of +/- 3 meters.
 HV0112
 HV0112.The orthometric height was determined by differential leveling and
 HV0112.adjusted by the NATIONAL GEODETIC SURVEY
 HV0112.in September 2004.
 HV0112
 HV0112.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0112.GEOID18 height accuracy estimate available here.
 HV0112
 HV0112.Click photographs - Photos may exist for this station.
 HV0112
 HV0112.The dynamic height is computed by dividing the NAVD 88
 HV0112.geopotential number by the normal gravity value computed on the
 HV0112.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0112.degrees latitude (g = 980.6199 gals.).
 HV0112
 HV0112.The modeled gravity was interpolated from observed gravity values.
 HV0112
 HV0112;                    North         East    Units  Estimated Accuracy
 HV0112;SPC MD       -   130,439.7     481,588.7     MT  (+/- 3 meters HH1 GPS) 
 HV0112
 HV0112_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0798299330(NAD 83)
 HV0112
 HV0112                          SUPERSEDED SURVEY CONTROL
 HV0112
 HV0112  NAVD 88 (06/15/91)    8.457  (m)           27.75   (f) SUPERSEDED  1 2
 HV0112  NGVD 29 (11/26/84)    8.690  (m)           28.51   (f) ADJUSTED    1 2
 HV0112
 HV0112.Superseded values are not recommended for survey control.
 HV0112
 HV0112.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0112.See file dsdata.pdf to determine how the superseded data were derived.
 HV0112
 HV0112_MARKER: DB = BENCH MARK DISK
 HV0112_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0112_SP_SET: HEADWALL
 HV0112_STAMPING: A 127 1971
 HV0112_MARK LOGO: CGS
 HV0112_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0112_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0112+STABILITY: SURFACE MOTION
 HV0112_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0112+SATELLITE: SATELLITE OBSERVATIONS - April 10, 2012
 HV0112
 HV0112  HISTORY     - Date     Condition        Report By
 HV0112  HISTORY     - 1971     MONUMENTED       NGS
 HV0112  HISTORY     - 19991007 GOOD             MDSHA
 HV0112  HISTORY     - 20020222 GOOD             USPSQD
 HV0112  HISTORY     - 20050314 GOOD             USPSQD
 HV0112  HISTORY     - 20110220 GOOD             NGS
 HV0112  HISTORY     - 20120410 GOOD             NGS
 HV0112
 HV0112                          STATION DESCRIPTION
 HV0112
 HV0112'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0112'4.6 MI N FROM EASTON.
 HV0112'ABOUT 4.55 MILES NORTH ALONG U.S. HIGHWAY 50 FROM THE INTERSECTION
 HV0112'OF STATE HIGHWAY 331 AT EASTON, 1.65 MILES SOUTH OF THE ENTRANCE
 HV0112'TO THE WOODLAWN MEMORIAL PARK CEMETERY, SET ON THE TOP OF THE
 HV0112'NORTH END OF THE EAST CONCRETE HEADWALL FOR A CONCRETE CULVERT
 HV0112'WITH PARTITION AND WING WALLS UNDER THE HIGHWAY, 28.7 FEET EAST
 HV0112'OF THE CENTER LINE OF THE EAST LANES OF THE HIGHWAY AND 1 FOOT
 HV0112'BELOW THE LEVEL OF THE HIGHWAY.
 HV0112
 HV0112                          STATION RECOVERY (1999)
 HV0112
 HV0112'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HV0112'RECOVERED AS DESCRIBED.
 HV0112
 HV0112                          STATION RECOVERY (2002)
 HV0112
 HV0112'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0112'RECOVERED IN GOOD CONDITION.
 HV0112
 HV0112                          STATION RECOVERY (2005)
 HV0112
 HV0112'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 HV0112'RECOVERED IN GOOD CONDITION.
 HV0112
 HV0112                          STATION RECOVERY (2011)
 HV0112
 HV0112'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 HV0112'RECOVERED IN GOOD CONDITION.
 HV0112
 HV0112                          STATION RECOVERY (2012)
 HV0112
 HV0112'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRA)
 HV0112'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0537 ***********************************************************************
 HV0537  DESIGNATION -  A 128
 HV0537  PID         -  HV0537
 HV0537  STATE/COUNTY-  MD/ST MARYS
 HV0537  COUNTRY     -  US
 HV0537  USGS QUAD   -  LEONARDTOWN (2016)
 HV0537
 HV0537                         *CURRENT SURVEY CONTROL
 HV0537  ______________________________________________________________________
 HV0537* NAD 83(1986) POSITION- 38 19 57.     (N) 076 44 23.     (W)   SCALED
 HV0537* NAVD 88 ORTHO HEIGHT -    33.872 (meters)      111.13  (feet) ADJUSTED
 HV0537  ______________________________________________________________________
 HV0537  GEOID HEIGHT    -        -33.727 (meters)                     GEOID18
 HV0537  DYNAMIC HEIGHT  -         33.851 (meters)      111.06  (feet) COMP
 HV0537  MODELED GRAVITY -    980,025.3   (mgal)                       NAVD 88
 HV0537
 HV0537  VERT ORDER      -  FIRST     CLASS II
 HV0537
 HV0537.The horizontal coordinates were scaled from a map and have
 HV0537.an estimated accuracy of +/- 6 seconds.
 HV0537
 HV0537.The orthometric height was determined by differential leveling and
 HV0537.adjusted by the NATIONAL GEODETIC SURVEY
 HV0537.in June 1991.
 HV0537
 HV0537.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0537.GEOID18 height accuracy estimate available here.
 HV0537
 HV0537.Click photographs - Photos may exist for this station.
 HV0537
 HV0537.The dynamic height is computed by dividing the NAVD 88
 HV0537.geopotential number by the normal gravity value computed on the
 HV0537.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0537.degrees latitude (g = 980.6199 gals.).
 HV0537
 HV0537.The modeled gravity was interpolated from observed gravity values.
 HV0537
 HV0537;                    North         East    Units  Estimated Accuracy
 HV0537;SPC MD       -    73,940.      422,760.      MT  (+/- 180 meters Scaled)
 HV0537
 HV0537_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH479441(NAD 83)
 HV0537
 HV0537                          SUPERSEDED SURVEY CONTROL
 HV0537
 HV0537  NGVD 29 (11/26/84)   34.111  (m)          111.91   (f) ADJUSTED    1 2
 HV0537
 HV0537.Superseded values are not recommended for survey control.
 HV0537
 HV0537.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0537.See file dsdata.pdf to determine how the superseded data were derived.
 HV0537
 HV0537_MARKER: DB = BENCH MARK DISK
 HV0537_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0537+WITH SETTING: INTO GROUND
 HV0537_STAMPING: A 128 1971
 HV0537_MARK LOGO: CGS
 HV0537_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0537+STABILITY: SURFACE MOTION
 HV0537
 HV0537  HISTORY     - Date     Condition        Report By
 HV0537  HISTORY     - 1971     MONUMENTED       NGS
 HV0537
 HV0537                          STATION DESCRIPTION
 HV0537
 HV0537'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0537'1.2 MI NW FROM CLEMENTS.
 HV0537'ABOUT 1.25 MILES NORTHWEST ALONG STATE HIGHWAY 234 FROM THE
 HV0537'POST OFFICE AT CLEMENTS, 0.35 MILE SOUTHEAST OF THE JUNCTION OF
 HV0537'LONG ROAD LEADING NORTH, 273 FEET SOUTH OF THE SOUTHEAST CORNER
 HV0537'OF A BRICK HOUSE, 60 FEET NORTHEAST OF THE CENTER LINE OF THE
 HV0537'HIGHWAY, 24 FEET SOUTHEAST OF THE CENTER LINE OF A DRIVEWAY
 HV0537'TO HOUSE, 2 FEET NORTHWEST OF A POWER LINE POLE, 2 FEET EAST
 HV0537'OF A STEEL WITNESS POST, 1 FOOT BELOW THE LEVEL OF THE HIGHWAY,
 HV0537'A DISK ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT
 HV0537'IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS LEVEL WITH THE
 HV0537'GROUND AND ENCASED IN A 4 INCH PIPE THAT IS FLUSH WITH THE
 HV0537'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0600 ***********************************************************************
 HV0600  DESIGNATION -  A 129
 HV0600  PID         -  HV0600
 HV0600  STATE/COUNTY-  MD/CHARLES
 HV0600  COUNTRY     -  US
 HV0600  USGS QUAD   -  POPES CREEK (2016)
 HV0600
 HV0600                         *CURRENT SURVEY CONTROL
 HV0600  ______________________________________________________________________
 HV0600* NAD 83(1986) POSITION- 38 29 04.     (N) 076 59 17.     (W)   SCALED
 HV0600* NAVD 88 ORTHO HEIGHT -    49.668 (meters)      162.95  (feet) ADJUSTED
 HV0600  ______________________________________________________________________
 HV0600  GEOID HEIGHT    -        -33.131 (meters)                     GEOID18
 HV0600  DYNAMIC HEIGHT  -         49.638 (meters)      162.85  (feet) COMP
 HV0600  MODELED GRAVITY -    980,021.1   (mgal)                       NAVD 88
 HV0600
 HV0600  VERT ORDER      -  FIRST     CLASS II
 HV0600
 HV0600.The horizontal coordinates were scaled from a map and have
 HV0600.an estimated accuracy of +/- 6 seconds.
 HV0600
 HV0600.The orthometric height was determined by differential leveling and
 HV0600.adjusted by the NATIONAL GEODETIC SURVEY
 HV0600.in June 1991.
 HV0600
 HV0600.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0600.GEOID18 height accuracy estimate available here.
 HV0600
 HV0600.Click photographs - Photos may exist for this station.
 HV0600
 HV0600.The dynamic height is computed by dividing the NAVD 88
 HV0600.geopotential number by the normal gravity value computed on the
 HV0600.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0600.degrees latitude (g = 980.6199 gals.).
 HV0600
 HV0600.The modeled gravity was interpolated from observed gravity values.
 HV0600
 HV0600;                    North         East    Units  Estimated Accuracy
 HV0600;SPC MD       -    90,780.      401,040.      MT  (+/- 180 meters Scaled)
 HV0600
 HV0600_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH266614(NAD 83)
 HV0600
 HV0600                          SUPERSEDED SURVEY CONTROL
 HV0600
 HV0600  NGVD 29 (11/26/84)   49.901  (m)          163.72   (f) ADJUSTED    1 2
 HV0600
 HV0600.Superseded values are not recommended for survey control.
 HV0600
 HV0600.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0600.See file dsdata.pdf to determine how the superseded data were derived.
 HV0600
 HV0600_MARKER: DB = BENCH MARK DISK
 HV0600_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0600_SP_SET: CATCH BASIN
 HV0600_STAMPING: A 129 1971
 HV0600_MARK LOGO: CGS
 HV0600_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0600
 HV0600  HISTORY     - Date     Condition        Report By
 HV0600  HISTORY     - 1971     MONUMENTED       NGS
 HV0600
 HV0600                          STATION DESCRIPTION
 HV0600
 HV0600'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0600'3.1 MI S FROM LA PLATA.
 HV0600'ABOUT 3.1 MILES SOUTH ALONG U.S. HIGHWAY 301 FROM THE
 HV0600'INTERSECTION OF STATE HIGHWAY 6 AT LA PLATA, ON THE TOP OF THE
 HV0600'NORTH SIDE OF A 12-FOOT DEEP CATCH BASIN, 279 FEET SOUTH OF A
 HV0600'CROSSOVER FOR THE SPRING HILL MOTEL, IN THE HIGHWAY MEDIAN, 39
 HV0600'FEET EAST OF THE CENTER LINE OF THE SOUTHBOUND LANE OF THE
 HV0600'HIGHWAY, 42 FEET WEST OF THE CENTER LINE OF THE NORTHBOUND LANE
 HV0600'OF THE HIGHWAY AND 2 FEET BELOW THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2143 ***********************************************************************
 JV2143  DESIGNATION -  A 13
 JV2143  PID         -  JV2143
 JV2143  STATE/COUNTY-  MD/FREDERICK
 JV2143  COUNTRY     -  US
 JV2143  USGS QUAD   -  URBANA (2016)
 JV2143
 JV2143                         *CURRENT SURVEY CONTROL
 JV2143  ______________________________________________________________________
 JV2143* NAD 83(1986) POSITION- 39 21 51.     (N) 077 20 45.     (W)   SCALED
 JV2143* NAVD 88 ORTHO HEIGHT -    95.820 (meters)      314.37  (feet) ADJUSTED
 JV2143  ______________________________________________________________________
 JV2143  GEOID HEIGHT    -        -32.426 (meters)                     GEOID18
 JV2143  DYNAMIC HEIGHT  -         95.769 (meters)      314.20  (feet) COMP
 JV2143  MODELED GRAVITY -    980,089.8   (mgal)                       NAVD 88
 JV2143
 JV2143  VERT ORDER      -  FIRST     CLASS II
 JV2143
 JV2143.The horizontal coordinates were scaled from a map and have
 JV2143.an estimated accuracy of +/- 6 seconds.
 JV2143
 JV2143.The orthometric height was determined by differential leveling and
 JV2143.adjusted by the NATIONAL GEODETIC SURVEY
 JV2143.in June 1991.
 JV2143
 JV2143.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2143.GEOID18 height accuracy estimate available here.
 JV2143
 JV2143.Click photographs - Photos may exist for this station.
 JV2143
 JV2143.The dynamic height is computed by dividing the NAVD 88
 JV2143.geopotential number by the normal gravity value computed on the
 JV2143.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2143.degrees latitude (g = 980.6199 gals.).
 JV2143
 JV2143.The modeled gravity was interpolated from observed gravity values.
 JV2143
 JV2143;                    North         East    Units  Estimated Accuracy
 JV2143;SPC MD       -   188,490.      370,200.      MT  (+/- 180 meters Scaled)
 JV2143
 JV2143_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ979598(NAD 83)
 JV2143
 JV2143                          SUPERSEDED SURVEY CONTROL
 JV2143
 JV2143  NGVD 29 (11/26/84)   96.038  (m)          315.08   (f) ADJUSTED    1 2
 JV2143
 JV2143.Superseded values are not recommended for survey control.
 JV2143
 JV2143.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2143.See file dsdata.pdf to determine how the superseded data were derived.
 JV2143
 JV2143_MARKER: DB = BENCH MARK DISK
 JV2143_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2143_SP_SET: BRIDGE
 JV2143_STAMPING: A 13 1935
 JV2143_MARK LOGO: CGS
 JV2143_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2143_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2143+SATELLITE: SATELLITE OBSERVATIONS - April 13, 2013
 JV2143
 JV2143  HISTORY     - Date     Condition        Report By
 JV2143  HISTORY     - 1935     MONUMENTED       CGS
 JV2143  HISTORY     - 20130413 GOOD             NAGEL
 JV2143
 JV2143                          STATION DESCRIPTION
 JV2143
 JV2143'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2143'3.2 MI E FROM FREDERICK JUNCTION.
 JV2143'ABOUT 3.2 MILES EAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2143'THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, ABOUT 0.1
 JV2143'MILE WEST OF THE WEST END OF THE IJAMSVILLE TUNNEL, 38.0 FEET
 JV2143'NORTH OF THE THIRTY-SECOND POLE WEST OF MILEPOST 54, AT A BRIDGE,
 JV2143'IN THE TOP OF THE WEST STONE BRIDGE SEAT, BETWEEN THE TRACKS,
 JV2143'AND ABOUT 4.8 FEET LOWER THAN THE TOP OF THE RAIL.  A STANDARD
 JV2143'DISK, STAMPED A 13 1935.
 JV2143
 JV2143                          STATION RECOVERY (2013)
 JV2143
 JV2143'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2013 (REN)
 JV2143'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0459 ***********************************************************************
 HV0459  DESIGNATION -  A 130
 HV0459  PID         -  HV0459
 HV0459  STATE/COUNTY-  MD/DORCHESTER
 HV0459  COUNTRY     -  US
 HV0459  USGS QUAD   -  HONGA (2016)
 HV0459
 HV0459                         *CURRENT SURVEY CONTROL
 HV0459  ______________________________________________________________________
 HV0459* NAD 83(1986) POSITION- 38 18 20.33   (N) 076 13 00.98   (W)   HD_HELD1
 HV0459* NAVD 88 ORTHO HEIGHT -     0.601 (meters)        1.97  (feet) ADJUSTED
 HV0459  ______________________________________________________________________
 HV0459  GEOID HEIGHT    -        -35.195 (meters)                     GEOID18
 HV0459  DYNAMIC HEIGHT  -          0.600 (meters)        1.97  (feet) COMP
 HV0459  MODELED GRAVITY -    979,992.3   (mgal)                       NAVD 88
 HV0459
 HV0459  VERT ORDER      -  FIRST     CLASS II
 HV0459
 HV0459.The horizontal coordinates were determined by differentially corrected
 HV0459.hand held GPS observations or other comparable positioning techniques
 HV0459.and have an estimated accuracy of +/- 3 meters.
 HV0459
 HV0459.The orthometric height was determined by differential leveling and
 HV0459.adjusted by the NATIONAL GEODETIC SURVEY
 HV0459.in June 1991.
 HV0459
 HV0459.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0459.GEOID18 height accuracy estimate available here.
 HV0459
 HV0459.Click photographs - Photos may exist for this station.
 HV0459
 HV0459.The dynamic height is computed by dividing the NAVD 88
 HV0459.geopotential number by the normal gravity value computed on the
 HV0459.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0459.degrees latitude (g = 980.6199 gals.).
 HV0459
 HV0459.The modeled gravity was interpolated from observed gravity values.
 HV0459
 HV0459;                    North         East    Units  Estimated Accuracy
 HV0459;SPC MD       -    71,223.5     468,490.8     MT  (+/- 3 meters HH1 GPS) 
 HV0459
 HV0459_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9359940428(NAD 83)
 HV0459
 HV0459                          SUPERSEDED SURVEY CONTROL
 HV0459
 HV0459  NGVD 29 (11/26/84)    0.844  (m)            2.77   (f) ADJUSTED    1 2
 HV0459
 HV0459.Superseded values are not recommended for survey control.
 HV0459
 HV0459.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0459.See file dsdata.pdf to determine how the superseded data were derived.
 HV0459
 HV0459_MARKER: DB = BENCH MARK DISK
 HV0459_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0459_STAMPING: A 130 1971
 HV0459_MARK LOGO: CGS
 HV0459_PROJECTION: RECESSED 2 CENTIMETERS
 HV0459_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0459_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0459+SATELLITE: SATELLITE OBSERVATIONS - August 19, 2014
 HV0459
 HV0459  HISTORY     - Date     Condition        Report By
 HV0459  HISTORY     - 1971     MONUMENTED       NGS
 HV0459  HISTORY     - 20011016 POOR             INDIV
 HV0459  HISTORY     - 20060326 GOOD             USPSQD
 HV0459  HISTORY     - 20140328 GOOD             ARCSHE
 HV0459  HISTORY     - 20140819 GOOD             MDDNR
 HV0459
 HV0459                          STATION DESCRIPTION
 HV0459
 HV0459'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0459'2.4 MI S FROM FISHING CREEK.
 HV0459'ABOUT 2.4 MILES SOUTH ALONG HOOPER ISLAND ROAD FROM THE POST
 HV0459'OFFICE AT FISHING CREEK, ON UPPER HOOPER ISLAND, 0.75 MILE
 HV0459'NORTHWEST OF THE NORTHWEST END OF THE BRIDGE AT FERRY POINT,
 HV0459'115 FEET NORTHEAST OF THE CENTER LINE OF THE ROAD, 53.9 FEET
 HV0459'SOUTH OF THE SOUTHWEST CORNER OF A 1-STORY FRAME HOUSE, 97
 HV0459'FEET EAST OF POWER POLE NUMBER 30H-109, 4 1/2 FEET SOUTH OF A
 HV0459'POLE WHICH BEARS A LIGHT, 1.4 FEET NORTH OF A METAL WITNESS
 HV0459'POST, ABOUT 1 FOOT BELOW THE LEVEL OF THE ROAD, AND ON THE TOP
 HV0459'OF A COPPER COATED ROD THAT IS 1/2 INCH BELOW GROUND AND IS
 HV0459'PROTECTED BY A 4-INCH METAL PIPE THAT IS LEVEL WITH THE GROUND.
 HV0459'THE ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 96 FEET.
 HV0459
 HV0459                          STATION RECOVERY (2001)
 HV0459
 HV0459'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2001 (LCS)
 HV0459'MARK WAS FOUND BUT WAS NOT VERY SECURE IN THE GROUND. ALSO POLE WITH
 HV0459'LIGHT NOTED IN THE DESCRIPTION HAS BEEN MOVED. METAL WITNESS POST IS
 HV0459'APPROX. 1 FOOT SOUTH OF MARK.
 HV0459
 HV0459                          STATION RECOVERY (2006)
 HV0459
 HV0459'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 HV0459'REFERENCED POWER POLE HAS BEEN RENUMBERED CHOPTANK 513 214.
 HV0459'REFERENCED LIGHT POLE DOES NOT EXIST.
 HV0459
 HV0459                          STATION RECOVERY (2014)
 HV0459
 HV0459'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0459'RECOVERED IN GOOD CONDITION.
 HV0459
 HV0459                          STATION RECOVERY (2014)
 HV0459
 HV0459'RECOVERY NOTE BY MD DEPT OF NAT RES 2014 (LCW)
 HV0459'A 130 1970  38 18 20.4 76 13 01.0 GPS GOOD
 HV0459'
 HV0459'AT 2307 HOOPERS ISLAND ROAD 29.83M 269 DEG MAG TO POLE 512/214 WITH
 HV0459'TRANSFORMER, 13.94M 278 DEG MAG TO BLOCK FOUNDATION OF HOUSE, 16.60M
 HV0459'DEG MAG TO SW CORNER OF CONCRETE STOOP OF SHED, 21.77M 181 DEG MAG TO
 HV0459'VENT FOR DRAIN FIELD, 0.39M 207 DEG MAG TO METAL WITNESS POST, 33.81M
 HV0459'220 DEG MAG TO E EDGE OF PAVEMENT TOWARD HOOPERS ISLAND LIGHT HOUSE.
 HV0459'
 HV0459'2 CM BELOW GROUND IN BLACK PVC KICKPIPE. HOOPERS ISLAND LH AND 48TH
 HV0459'STEEL GUARDRAIL POST SOUTH OF N END OF RAIL ARE ONLINE WITH MARK AT
 HV0459'220 DEG MAG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1505 ***********************************************************************
 HV1505  DESIGNATION -  A 131
 HV1505  PID         -  HV1505
 HV1505  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1505  COUNTRY     -  US
 HV1505  USGS QUAD   -  BRISTOL (2016)
 HV1505
 HV1505                         *CURRENT SURVEY CONTROL
 HV1505  ______________________________________________________________________
 HV1505* NAD 83(1986) POSITION- 38 49 14.     (N) 076 39 14.     (W)   SCALED
 HV1505* NAVD 88 ORTHO HEIGHT -    37.128 (meters)      121.81  (feet) ADJUSTED
 HV1505  ______________________________________________________________________
 HV1505  GEOID HEIGHT    -        -33.205 (meters)                     GEOID18
 HV1505  DYNAMIC HEIGHT  -         37.107 (meters)      121.74  (feet) COMP
 HV1505  MODELED GRAVITY -    980,056.3   (mgal)                       NAVD 88
 HV1505
 HV1505  VERT ORDER      -  FIRST     CLASS I
 HV1505
 HV1505.The horizontal coordinates were scaled from a map and have
 HV1505.an estimated accuracy of +/- 6 seconds.
 HV1505
 HV1505.The orthometric height was determined by differential leveling and
 HV1505.adjusted by the NATIONAL GEODETIC SURVEY
 HV1505.in June 1991.
 HV1505
 HV1505.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1505.GEOID18 height accuracy estimate available here.
 HV1505
 HV1505.Click photographs - Photos may exist for this station.
 HV1505
 HV1505.The dynamic height is computed by dividing the NAVD 88
 HV1505.geopotential number by the normal gravity value computed on the
 HV1505.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1505.degrees latitude (g = 980.6199 gals.).
 HV1505
 HV1505.The modeled gravity was interpolated from observed gravity values.
 HV1505
 HV1505;                    North         East    Units  Estimated Accuracy
 HV1505;SPC MD       -   128,140.      430,060.      MT  (+/- 180 meters Scaled)
 HV1505
 HV1505_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH564981(NAD 83)
 HV1505
 HV1505                          SUPERSEDED SURVEY CONTROL
 HV1505
 HV1505  NGVD 29 (11/26/84)   37.365  (m)          122.59   (f) ADJUSTED    1 1
 HV1505
 HV1505.Superseded values are not recommended for survey control.
 HV1505
 HV1505.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1505.See file dsdata.pdf to determine how the superseded data were derived.
 HV1505
 HV1505_MARKER: DB = BENCH MARK DISK
 HV1505_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV1505+WITH SETTING: INTO GROUND
 HV1505_STAMPING: A 131 1971
 HV1505_MARK LOGO: CGS
 HV1505_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1505+STABILITY: SURFACE MOTION
 HV1505
 HV1505  HISTORY     - Date     Condition        Report By
 HV1505  HISTORY     - 1971     MONUMENTED       NGS
 HV1505
 HV1505                          STATION DESCRIPTION
 HV1505
 HV1505'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1505'2.8 MI E FROM WAYSONS CORNER.
 HV1505'ABOUT 2.75 MILES EAST ALONG STATE HIGHWAY 408 FROM THE JUNCTION
 HV1505'OF THE NORTH LANES OF STATE HIGHWAY 4 AT WAYSONS CORNER, 0.5 MILE
 HV1505'EAST OF THE MT. CALVARY METHODIST CHURCH AND CEMETERY, AT THE
 HV1505'JUNCTION OF A FARM ROAD WHICH LEADS SOUTH, 39 1/2 FEET SOUTH
 HV1505'OF THE CENTER LINE OF THE HIGHWAY, 11 FEET WEST OF THE CENTER
 HV1505'LINE OF THE ROAD, 15 FEET SOUTH-SOUTHEAST OF POWER POLE NUMBER
 HV1505'A3797, 2.3 FEET NORTHWEST OF THE NORTHEAST CORNER OF THE WEST
 HV1505'BRICK PILLAR FOR A GATE ACROSS THE ROAD, 1.9 FEET NORTHEAST OF
 HV1505'THE NORTHWEST CORNER OF THE PILLAR, ABOUT LEVEL WITH THE HIGHWAY,
 HV1505'AND ON THE TOP OF A 4-FOOT SECTION OF COPPER COATED ROD THAT
 HV1505'IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS 1 INCH BELOW THE
 HV1505'SURFACE OF THE GROUND AND IS PROTECTED BY A 4-INCH PIPE WHICH
 HV1505'IS LEVEL WITH THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0306 ***********************************************************************
 HV0306  DESIGNATION -  A 132
 HV0306  PID         -  HV0306
 HV0306  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0306  COUNTRY     -  US
 HV0306  USGS QUAD   -  ANNAPOLIS (2016)
 HV0306
 HV0306                         *CURRENT SURVEY CONTROL
 HV0306  ______________________________________________________________________
 HV0306* NAD 83(1986) POSITION- 38 58 57.     (N) 076 27 45.     (W)   SCALED
 HV0306* NAVD 88 ORTHO HEIGHT -     2.215 (meters)        7.27  (feet) ADJUSTED
 HV0306  ______________________________________________________________________
 HV0306  GEOID HEIGHT    -        -33.388 (meters)                     GEOID18
 HV0306  DYNAMIC HEIGHT  -          2.214 (meters)        7.26  (feet) COMP
 HV0306  MODELED GRAVITY -    980,076.7   (mgal)                       NAVD 88
 HV0306
 HV0306  VERT ORDER      -  FIRST     CLASS I
 HV0306
 HV0306.The horizontal coordinates were scaled from a map and have
 HV0306.an estimated accuracy of +/- 6 seconds.
 HV0306
 HV0306.The orthometric height was determined by differential leveling and
 HV0306.adjusted by the NATIONAL GEODETIC SURVEY
 HV0306.in June 1991.
 HV0306
 HV0306.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0306.GEOID18 height accuracy estimate available here.
 HV0306
 HV0306.Click photographs - Photos may exist for this station.
 HV0306
 HV0306.The dynamic height is computed by dividing the NAVD 88
 HV0306.geopotential number by the normal gravity value computed on the
 HV0306.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0306.degrees latitude (g = 980.6199 gals.).
 HV0306
 HV0306.The modeled gravity was interpolated from observed gravity values.
 HV0306
 HV0306;                    North         East    Units  Estimated Accuracy
 HV0306;SPC MD       -   146,200.      446,570.      MT  (+/- 180 meters Scaled)
 HV0306
 HV0306_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ733158(NAD 83)
 HV0306
 HV0306                          SUPERSEDED SURVEY CONTROL
 HV0306
 HV0306  NGVD 29 (11/26/84)    2.459  (m)            8.07   (f) ADJUSTED    1 1
 HV0306
 HV0306.Superseded values are not recommended for survey control.
 HV0306
 HV0306.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0306.See file dsdata.pdf to determine how the superseded data were derived.
 HV0306
 HV0306_MARKER: DB = BENCH MARK DISK
 HV0306_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0306+WITH SETTING: INTO GROUND
 HV0306_STAMPING: A 132 1971
 HV0306_MARK LOGO: CGS
 HV0306_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0306+STABILITY: SURFACE MOTION
 HV0306_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0306+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2005
 HV0306
 HV0306  HISTORY     - Date     Condition        Report By
 HV0306  HISTORY     - 1971     MONUMENTED       NGS
 HV0306  HISTORY     - 20050720 GOOD             USPSQD
 HV0306
 HV0306                          STATION DESCRIPTION
 HV0306
 HV0306'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0306'AT ANNAPOLIS.
 HV0306'AT THE U.S. NAVAL STATION AT ANNAPOLIS, ABOUT 0.1 MILE SOUTHWEST
 HV0306'ALONG GILMORE ROAD FROM THE ADMINISTRATION BUILDING, THENCE
 HV0306'0.35 MILE SOUTHWEST ALONG HALLIGAN ROAD, AT THE EAST CORNER OF
 HV0306'A CONCRETE APRON FORMERLY USED BY SEAPLANES, 433 FEET NORTHEAST
 HV0306'OF THE CENTER LINE OF A PIER WHICH EXTENDS SOUTHEAST FROM THE APRON,
 HV0306'251.3 FEET SOUTHEAST OF THE ESAT CORNER OF A BUILDING WHICH WAS
 HV0306'FORMERLY USED AS A HANGAR FOR SEAPLANES, 0.7 FOOT NORTH OF THE
 HV0306'EAST CORNER OF A CURB, 22.7 FEET WEST-NORTHWEST OF BENCH MARK
 HV0306'DON 1970, 0.6 FOOT SOUTHWEST OF A METAL WITNESS POST, ABOUT LEVEL
 HV0306'WITH THE CURB, AND ON THE TOP OF A COPPER COATED ROD WHICH IS
 HV0306'LEVEL WITH THE CURB AND IS PROTECTED BY A 4-INCH METAL PIPE
 HV0306'WHICH IS LEVEL WITH THE CURB.  THE ROD WAS DRIVEN TO REFUSAL
 HV0306'AT A DEPTH OF 43 FEET.
 HV0306
 HV0306                          STATION RECOVERY (2005)
 HV0306
 HV0306'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV0306'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0939 ***********************************************************************
 HV0939  DESIGNATION -  A 133
 HV0939  PID         -  HV0939
 HV0939  STATE/COUNTY-  MD/CALVERT
 HV0939  COUNTRY     -  US
 HV0939  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0939
 HV0939                         *CURRENT SURVEY CONTROL
 HV0939  ______________________________________________________________________
 HV0939* NAD 83(1986) POSITION- 38 35 03.78   (N) 076 36 18.03   (W)   HD_HELD1
 HV0939* NAVD 88 ORTHO HEIGHT -     3.436 (meters)       11.27  (feet) ADJUSTED
 HV0939  ______________________________________________________________________
 HV0939  GEOID HEIGHT    -        -33.719 (meters)                     GEOID18
 HV0939  DYNAMIC HEIGHT  -          3.434 (meters)       11.27  (feet) COMP
 HV0939  MODELED GRAVITY -    980,036.5   (mgal)                       NAVD 88
 HV0939
 HV0939  VERT ORDER      -  FIRST     CLASS II
 HV0939
 HV0939.The horizontal coordinates were determined by differentially corrected
 HV0939.hand held GPS observations or other comparable positioning techniques
 HV0939.and have an estimated accuracy of +/- 3 meters.
 HV0939
 HV0939.The orthometric height was determined by differential leveling and
 HV0939.adjusted by the NATIONAL GEODETIC SURVEY
 HV0939.in June 1991.
 HV0939
 HV0939.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0939.GEOID18 height accuracy estimate available here.
 HV0939
 HV0939.Click photographs - Photos may exist for this station.
 HV0939
 HV0939.The dynamic height is computed by dividing the NAVD 88
 HV0939.geopotential number by the normal gravity value computed on the
 HV0939.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0939.degrees latitude (g = 980.6199 gals.).
 HV0939
 HV0939.The modeled gravity was interpolated from observed gravity values.
 HV0939
 HV0939;                    North         East    Units  Estimated Accuracy
 HV0939;SPC MD       -   101,944.6     434,414.6     MT  (+/- 3 meters HH1 GPS) 
 HV0939
 HV0939_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6020671878(NAD 83)
 HV0939
 HV0939                          SUPERSEDED SURVEY CONTROL
 HV0939
 HV0939  NGVD 29 (11/26/84)    3.681  (m)           12.08   (f) ADJUSTED    1 2
 HV0939
 HV0939.Superseded values are not recommended for survey control.
 HV0939
 HV0939.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0939.See file dsdata.pdf to determine how the superseded data were derived.
 HV0939
 HV0939_MARKER: DB = BENCH MARK DISK
 HV0939_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV0939_SP_SET: ABUTMENT
 HV0939_STAMPING: A 133 1971
 HV0939_MARK LOGO: CGS
 HV0939_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0939
 HV0939  HISTORY     - Date     Condition        Report By
 HV0939  HISTORY     - 1971     MONUMENTED       NGS
 HV0939  HISTORY     - 1972     GOOD             NGS
 HV0939  HISTORY     - 20220731 GOOD             WTBALL
 HV0939
 HV0939                          STATION DESCRIPTION
 HV0939
 HV0939'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV0939'3.6 MI NW FROM PRINCE FREDERICK.
 HV0939'ABOUT 3.55 MILES NORTH ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0939'INTERSECTION OF STATE HIGHWAY 231 AT PRINCE FREDERICK, NEAR THE
 HV0939'JUNCTION OF STATE HIGHWAY 263 LEADING NORTHEAST, SET ON THE TOP
 HV0939'OF THE SOUTHEAST END OF THE NORTHEAST CONCRETE ABUTMENT FOR A
 HV0939'30-FOOT BRIDGE OVER HUNTING CREEK, 240 FEET NORTHEAST OF THE
 HV0939'CENTER LINE OF THE NORTHBOUND LANE OF STATE HIGHWAY 2 AND 4,
 HV0939'21.5 FEET SOUTHEAST OF THE CENTER LINE OF STATE HIGHWAY 263
 HV0939'AND ABOUT LEVEL WITH THE HIGHWAYS.
 HV0939
 HV0939                          STATION RECOVERY (2022)
 HV0939
 HV0939'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2022 (JMB)
 HV0939'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0352 ***********************************************************************
 HV0352  DESIGNATION -  A 134
 HV0352  PID         -  HV0352
 HV0352  STATE/COUNTY-  MD/CALVERT
 HV0352  COUNTRY     -  US
 HV0352  USGS QUAD   -  COVE POINT (2016)
 HV0352
 HV0352                         *CURRENT SURVEY CONTROL
 HV0352  ______________________________________________________________________
 HV0352* NAD 83(1986) POSITION- 38 25 06.     (N) 076 27 33.     (W)   SCALED
 HV0352* NAVD 88 ORTHO HEIGHT -     8.771 (meters)       28.78  (feet) ADJUSTED
 HV0352  ______________________________________________________________________
 HV0352  GEOID HEIGHT    -        -34.292 (meters)                     GEOID18
 HV0352  DYNAMIC HEIGHT  -          8.765 (meters)       28.76  (feet) COMP
 HV0352  MODELED GRAVITY -    980,022.9   (mgal)                       NAVD 88
 HV0352
 HV0352  VERT ORDER      -  FIRST     CLASS II
 HV0352
 HV0352.The horizontal coordinates were scaled from a map and have
 HV0352.an estimated accuracy of +/- 6 seconds.
 HV0352
 HV0352.The orthometric height was determined by differential leveling and
 HV0352.adjusted by the NATIONAL GEODETIC SURVEY
 HV0352.in June 1991.
 HV0352
 HV0352.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0352.GEOID18 height accuracy estimate available here.
 HV0352
 HV0352.Click photographs - Photos may exist for this station.
 HV0352
 HV0352.The dynamic height is computed by dividing the NAVD 88
 HV0352.geopotential number by the normal gravity value computed on the
 HV0352.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0352.degrees latitude (g = 980.6199 gals.).
 HV0352
 HV0352.The modeled gravity was interpolated from observed gravity values.
 HV0352
 HV0352;                    North         East    Units  Estimated Accuracy
 HV0352;SPC MD       -    83,580.      447,230.      MT  (+/- 180 meters Scaled)
 HV0352
 HV0352_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH726532(NAD 83)
 HV0352
 HV0352                          SUPERSEDED SURVEY CONTROL
 HV0352
 HV0352  NGVD 29 (11/26/84)    9.014  (m)           29.57   (f) ADJUSTED    1 2
 HV0352
 HV0352.Superseded values are not recommended for survey control.
 HV0352
 HV0352.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0352.See file dsdata.pdf to determine how the superseded data were derived.
 HV0352
 HV0352_MARKER: DB = BENCH MARK DISK
 HV0352_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0352_SP_SET: BRIDGE
 HV0352_STAMPING: A 134 1971
 HV0352_MARK LOGO: CGS
 HV0352_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0352
 HV0352  HISTORY     - Date     Condition        Report By
 HV0352  HISTORY     - 1971     MONUMENTED       NGS
 HV0352  HISTORY     - 1981     GOOD             NGS
 HV0352
 HV0352                          STATION DESCRIPTION
 HV0352
 HV0352'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0352'0.5 MI NW FROM LUSBY.
 HV0352'ABOUT 0.5 MILE NORTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0352'POST OFFICE AT LUSBY, SET ON THE TOP OF THE SOUTH END OF THE
 HV0352'WEST CONCRETE GUARD RAIL BASE FOR THE 77-FOOT LONG BRIDGE OVER
 HV0352'JOHNS CREEK, 17.5 FEET WEST OF THE CENTER LINE OF THE HIGHWAY,
 HV0352'0.3 FOOT EAST OF THE SOUTH END OF THE GUARD RAIL AND 1/2 FOOT
 HV0352'ABOVE THE LEVEL OF THE HIGHWAY.
 HV0352
 HV0352                          STATION RECOVERY (1981)
 HV0352
 HV0352'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HV0352'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0314 ***********************************************************************
 HV0314  DESIGNATION -  A 135
 HV0314  PID         -  HV0314
 HV0314  STATE/COUNTY-  MD/ST MARYS
 HV0314  COUNTRY     -  US
 HV0314  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV0314
 HV0314                         *CURRENT SURVEY CONTROL
 HV0314  ______________________________________________________________________
 HV0314* NAD 83(1986) POSITION- 38 14 51.     (N) 076 29 21.     (W)   SCALED
 HV0314* NAVD 88 ORTHO HEIGHT -    27.551 (meters)       90.39  (feet) ADJUSTED
 HV0314  ______________________________________________________________________
 HV0314  GEOID HEIGHT    -        -34.437 (meters)                     GEOID18
 HV0314  DYNAMIC HEIGHT  -         27.533 (meters)       90.33  (feet) COMP
 HV0314  MODELED GRAVITY -    980,006.9   (mgal)                       NAVD 88
 HV0314
 HV0314  VERT ORDER      -  FIRST     CLASS II
 HV0314
 HV0314.The horizontal coordinates were scaled from a map and have
 HV0314.an estimated accuracy of +/- 6 seconds.
 HV0314
 HV0314.The orthometric height was determined by differential leveling and
 HV0314.adjusted by the NATIONAL GEODETIC SURVEY
 HV0314.in June 1991.
 HV0314
 HV0314.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0314.GEOID18 height accuracy estimate available here.
 HV0314
 HV0314.Click photographs - Photos may exist for this station.
 HV0314
 HV0314.The dynamic height is computed by dividing the NAVD 88
 HV0314.geopotential number by the normal gravity value computed on the
 HV0314.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0314.degrees latitude (g = 980.6199 gals.).
 HV0314
 HV0314.The modeled gravity was interpolated from observed gravity values.
 HV0314
 HV0314;                    North         East    Units  Estimated Accuracy
 HV0314;SPC MD       -    64,600.      444,720.      MT  (+/- 180 meters Scaled)
 HV0314
 HV0314_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH696343(NAD 83)
 HV0314
 HV0314                          SUPERSEDED SURVEY CONTROL
 HV0314
 HV0314  NGVD 29 (11/26/84)   27.807  (m)           91.23   (f) ADJUSTED    1 2
 HV0314
 HV0314.Superseded values are not recommended for survey control.
 HV0314
 HV0314.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0314.See file dsdata.pdf to determine how the superseded data were derived.
 HV0314
 HV0314_MARKER: DB = BENCH MARK DISK
 HV0314_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0314_SP_SET: BUILDING
 HV0314_STAMPING: A 135 1971
 HV0314_MARK LOGO: CGS
 HV0314_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0314_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0314+SATELLITE: SATELLITE OBSERVATIONS - January 03, 1991
 HV0314
 HV0314  HISTORY     - Date     Condition        Report By
 HV0314  HISTORY     - 1971     MONUMENTED       NGS
 HV0314  HISTORY     - 19910103 GOOD             NGS
 HV0314
 HV0314                          STATION DESCRIPTION
 HV0314
 HV0314'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0314'0.8 MI NE FROM GREAT MILLS.
 HV0314'ABOUT 0.85 NORTHEAST ALONG STATE HIGHWAY 246 FROM THE JUNCTION OF
 HV0314'STATE HIGHWAY 5 AT GREAT MILLS, SET VERTICALLY IN THE NORTHWEST
 HV0314'BRICK WALL AND AT THE WEST CORNER OF THE WEST WING OF THE
 HV0314'GREAT MILLS HIGH SCHOOL BUILDING, 188 FEET SOUTHEAST OF THE
 HV0314'CENTER LINE OF THE HIGHWAY, 40 FEET NORTHEAST OF THE CENTER LINE
 HV0314'OF THE SOUTHWEST DRIVEWAY TO THE SCHOOL BUILDING, 2.4 FEET ABOVE
 HV0314'THE LEVEL OF THE GROUND AND ABOUT 3 FEET ABOVE THE LEVEL OF THE
 HV0314'HIGHWAY.
 HV0314
 HV0314                          STATION RECOVERY (1991)
 HV0314
 HV0314'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV0314'1.3 KM (0.8 MI) NORTHEASTERLY ALONG STATE HIGHWAY 246 FROM THE
 HV0314'JUNCTION OF STATE HIGHWAY 5 IN GREAT MILLS, SET VERTICALLY IN THE
 HV0314'WEST FACE OF THE OF THE WEST WING OF THE GREAT MILLS HIGH SCHOOL
 HV0314'BUILDING, 0.6 M (2.0 FT) ABOVE THE GROUND SURFACE, AND 0.3 M
 HV0314'(1.0 FT) NORTH OF THE SOUTHWEST CORNER OF THE BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7783 ***********************************************************************
 HV7783  DESIGNATION -  A 136
 HV7783  PID         -  HV7783
 HV7783  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7783  COUNTRY     -  US
 HV7783  USGS QUAD   -  BRANDYWINE (2016)
 HV7783
 HV7783                         *CURRENT SURVEY CONTROL
 HV7783  ______________________________________________________________________
 HV7783* NAD 83(1986) POSITION- 38 42 04.     (N) 076 52 00.     (W)   SCALED
 HV7783* NAVD 88 ORTHO HEIGHT -    73.224 (meters)      240.24  (feet) ADJUSTED
 HV7783  ______________________________________________________________________
 HV7783  GEOID HEIGHT    -        -32.832 (meters)                     GEOID18
 HV7783  DYNAMIC HEIGHT  -         73.182 (meters)      240.10  (feet) COMP
 HV7783  MODELED GRAVITY -    980,051.9   (mgal)                       NAVD 88
 HV7783
 HV7783  VERT ORDER      -  FIRST     CLASS II
 HV7783
 HV7783.The horizontal coordinates were scaled from a map and have
 HV7783.an estimated accuracy of +/- 6 seconds.
 HV7783
 HV7783.The orthometric height was determined by differential leveling and
 HV7783.adjusted by the NATIONAL GEODETIC SURVEY
 HV7783.in June 1991.
 HV7783
 HV7783.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7783.GEOID18 height accuracy estimate available here.
 HV7783
 HV7783.Click photographs - Photos may exist for this station.
 HV7783
 HV7783.The dynamic height is computed by dividing the NAVD 88
 HV7783.geopotential number by the normal gravity value computed on the
 HV7783.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7783.degrees latitude (g = 980.6199 gals.).
 HV7783
 HV7783.The modeled gravity was interpolated from observed gravity values.
 HV7783
 HV7783;                    North         East    Units  Estimated Accuracy
 HV7783;SPC MD       -   114,840.      411,600.      MT  (+/- 180 meters Scaled)
 HV7783
 HV7783_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH376852(NAD 83)
 HV7783
 HV7783                          SUPERSEDED SURVEY CONTROL
 HV7783
 HV7783  NGVD 29 (11/26/84)   73.450  (m)          240.98   (f) ADJUSTED    1 2
 HV7783
 HV7783.Superseded values are not recommended for survey control.
 HV7783
 HV7783.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7783.See file dsdata.pdf to determine how the superseded data were derived.
 HV7783
 HV7783_MARKER: DV = VERTICAL CONTROL DISK
 HV7783_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV7783_STAMPING: A 136 1975
 HV7783_MARK LOGO: NGS
 HV7783_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7783_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7783+SATELLITE: SATELLITE OBSERVATIONS - September 16, 2010
 HV7783
 HV7783  HISTORY     - Date     Condition        Report By
 HV7783  HISTORY     - 1975     MONUMENTED       NGS
 HV7783  HISTORY     - 20040726 MARK NOT FOUND   GEOCAC
 HV7783  HISTORY     - 20060418 GOOD             MDSHA
 HV7783  HISTORY     - 20100916 GOOD             JCLS
 HV7783
 HV7783                          STATION DESCRIPTION
 HV7783
 HV7783'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7783'0.20 MI NE FROM TB.
 HV7783'0.20 MILES NORTHEAST ALONG U.S. HIGHWAY 301 FROM THE INTERSECTION OF
 HV7783'STATE HIGHWAY 381 AT TB, AT THE EAST CORNER OF A STEEL FENCE AROUND
 HV7783'THE PLAY FIELD OF GWYNN PARK SCHOOL, 62.7 FEET NORTHWEST OF THE CENTER
 HV7783'LINE OF THE SOUTHBOUND LANE OF THE HIGHWAY, 18.7 FEET SOUTH OF THE
 HV7783'MOST EASTERLY ONE OF 6 WOODEN POLES SUPPORTING A TRANSFORMER, 1.7 FEET
 HV7783'SOUTHEAST OF FENCE, 1.8 FEET SOUTH OF THE FENCE CORNER POST.
 HV7783
 HV7783                          STATION RECOVERY (2004)
 HV7783
 HV7783'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV7783'MARK NOT FOUND.
 HV7783
 HV7783                          STATION RECOVERY (2006)
 HV7783
 HV7783'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2006 (MPM)
 HV7783'RECOVERED IN GOOD CONDITION.
 HV7783
 HV7783                          STATION RECOVERY (2010)
 HV7783
 HV7783'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2010
 HV7783'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3818 ***********************************************************************
 JV3818  DESIGNATION -  A 137
 JV3818  PID         -  JV3818
 JV3818  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV3818  COUNTRY     -  US
 JV3818  USGS QUAD   -  ODENTON (2016)
 JV3818
 JV3818                         *CURRENT SURVEY CONTROL
 JV3818  ______________________________________________________________________
 JV3818* NAD 83(1986) POSITION- 39 02 59.     (N) 076 39 43.     (W)   SCALED
 JV3818* NAVD 88 ORTHO HEIGHT -    43.609 (meters)      143.07  (feet) ADJUSTED
 JV3818  ______________________________________________________________________
 JV3818  GEOID HEIGHT    -        -32.811 (meters)                     GEOID18
 JV3818  DYNAMIC HEIGHT  -         43.585 (meters)      143.00  (feet) COMP
 JV3818  MODELED GRAVITY -    980,079.5   (mgal)                       NAVD 88
 JV3818
 JV3818  VERT ORDER      -  FIRST     CLASS II
 JV3818
 JV3818.The horizontal coordinates were scaled from a map and have
 JV3818.an estimated accuracy of +/- 6 seconds.
 JV3818
 JV3818.The orthometric height was determined by differential leveling and
 JV3818.adjusted by the NATIONAL GEODETIC SURVEY
 JV3818.in June 1991.
 JV3818
 JV3818.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3818.GEOID18 height accuracy estimate available here.
 JV3818
 JV3818.Click photographs - Photos may exist for this station.
 JV3818
 JV3818.The dynamic height is computed by dividing the NAVD 88
 JV3818.geopotential number by the normal gravity value computed on the
 JV3818.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3818.degrees latitude (g = 980.6199 gals.).
 JV3818
 JV3818.The modeled gravity was interpolated from observed gravity values.
 JV3818
 JV3818;                    North         East    Units  Estimated Accuracy
 JV3818;SPC MD       -   153,580.      429,260.      MT  (+/- 180 meters Scaled)
 JV3818
 JV3818_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ561236(NAD 83)
 JV3818
 JV3818                          SUPERSEDED SURVEY CONTROL
 JV3818
 JV3818  NGVD 29 (11/26/84)   43.845  (m)          143.85   (f) ADJUSTED    1 2
 JV3818
 JV3818.Superseded values are not recommended for survey control.
 JV3818
 JV3818.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3818.See file dsdata.pdf to determine how the superseded data were derived.
 JV3818
 JV3818_MARKER: DV = VERTICAL CONTROL DISK
 JV3818_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV3818+WITH SETTING: INTO GROUND
 JV3818_STAMPING: A 137 1975
 JV3818_MARK LOGO: NGS
 JV3818_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3818+STABILITY: SURFACE MOTION
 JV3818_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3818+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2005
 JV3818
 JV3818  HISTORY     - Date     Condition        Report By
 JV3818  HISTORY     - 1975     MONUMENTED       NGS
 JV3818  HISTORY     - 20020218 GOOD             USPSQD
 JV3818  HISTORY     - 20050720 GOOD             USPSQD
 JV3818
 JV3818                          STATION DESCRIPTION
 JV3818
 JV3818'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 JV3818'7.45 MI NORTH FROM BOWIE.
 JV3818'7.45 MILES NORTH ALONG STATE HIGHWAY 3 FROM THE JUNCTION OF U.S.
 JV3818'HIGHWAY 301 STATE HIGHWAY 3 AND U.S. HIGHWAY 50 AT BOWIE. ACROSS FROM
 JV3818'LEO,S VACATION CENTER. 34 FEET NORTHWEST OF THE CENTERLINE OF THE
 JV3818'NORTHBOUND LANE OF STATE HIGHWAY 3. 35 FEET EAST OF POWER POLE 13
 JV3818'96 FEET WEST OF POWER POLE NO 295530. 7.5 FEET SOUTH OF THE SOUTH
 JV3818'CORNER OF A CHAIN LINK FENCE. 1.7 FEET EAST OF POWER POLE NO 339225
 JV3818'(WITH TRANSFORMER).
 JV3818
 JV3818                          STATION RECOVERY (2002)
 JV3818
 JV3818'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV3818'RECOVERED IN GOOD CONDITION.
 JV3818
 JV3818                          STATION RECOVERY (2005)
 JV3818
 JV3818'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV3818'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1839 ***********************************************************************
 JV1839  DESIGNATION -  A 14
 JV1839  PID         -  JV1839
 JV1839  STATE/COUNTY-  MD/CARROLL
 JV1839  COUNTRY     -  US
 JV1839  USGS QUAD   -  UNION BRIDGE (2016)
 JV1839
 JV1839                         *CURRENT SURVEY CONTROL
 JV1839  ______________________________________________________________________
 JV1839* NAD 83(1986) POSITION- 39 35 56.     (N) 077 14 06.     (W)   SCALED
 JV1839* NAVD 88 ORTHO HEIGHT -   137.217 (meters)      450.19  (feet) ADJUSTED
 JV1839  ______________________________________________________________________
 JV1839  GEOID HEIGHT    -        -32.870 (meters)                     GEOID18
 JV1839  DYNAMIC HEIGHT  -        137.143 (meters)      449.94  (feet) COMP
 JV1839  MODELED GRAVITY -    980,089.2   (mgal)                       NAVD 88
 JV1839
 JV1839  VERT ORDER      -  SECOND    CLASS I
 JV1839
 JV1839.The horizontal coordinates were scaled from a map and have
 JV1839.an estimated accuracy of +/- 6 seconds.
 JV1839
 JV1839.The orthometric height was determined by differential leveling and
 JV1839.adjusted by the NATIONAL GEODETIC SURVEY
 JV1839.in June 1991.
 JV1839
 JV1839.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1839.GEOID18 height accuracy estimate available here.
 JV1839
 JV1839.Click photographs - Photos may exist for this station.
 JV1839
 JV1839.The dynamic height is computed by dividing the NAVD 88
 JV1839.geopotential number by the normal gravity value computed on the
 JV1839.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1839.degrees latitude (g = 980.6199 gals.).
 JV1839
 JV1839.The modeled gravity was interpolated from observed gravity values.
 JV1839
 JV1839;                    North         East    Units  Estimated Accuracy
 JV1839;SPC MD       -   214,520.      379,820.      MT  (+/- 180 meters Scaled)
 JV1839
 JV1839_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ081856(NAD 83)
 JV1839
 JV1839                          SUPERSEDED SURVEY CONTROL
 JV1839
 JV1839  NGVD 29 (11/26/84)  137.420  (m)          450.85   (f) ADJUSTED    2 0
 JV1839
 JV1839.Superseded values are not recommended for survey control.
 JV1839
 JV1839.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1839.See file dsdata.pdf to determine how the superseded data were derived.
 JV1839
 JV1839_MARKER: DB = BENCH MARK DISK
 JV1839_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JV1839_SP_SET: BRIDGE WINGWALL
 JV1839_STAMPING: A 14 1935
 JV1839_MARK LOGO: CGS
 JV1839_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1839_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1839_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1839+SATELLITE: SATELLITE OBSERVATIONS - June 12, 2001
 JV1839
 JV1839  HISTORY     - Date     Condition        Report By
 JV1839  HISTORY     - 1935     MONUMENTED       CGS
 JV1839  HISTORY     - 1942     GOOD             CGS
 JV1839  HISTORY     - 20010612 GOOD             MDSHA
 JV1839  HISTORY     - 20100506 GOOD             GEOCAC
 JV1839
 JV1839                          STATION DESCRIPTION
 JV1839
 JV1839'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1839'AT KEYMAR.
 JV1839'AT KEYMAR, CARROLL COUNTY, ABOUT 61 FEET SOUTHEAST OF THE WESTERN
 JV1839'MARYLAND RAILWAY STATION, AT THE PENNSYLVANIA RAILROAD UNDERPASS,
 JV1839'IN THE TOP OF THE EAST STONE-WING WALL, AND 12 FEET NORTHEAST
 JV1839'OF THE CENTER LINE OF THE TRACK.  A STANDARD DISK, STAMPED A 14
 JV1839'1935.
 JV1839
 JV1839                          STATION RECOVERY (1942)
 JV1839
 JV1839'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV1839'RECOVERED IN GOOD CONDITION.
 JV1839
 JV1839                          STATION RECOVERY (2001)
 JV1839
 JV1839'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1839'RECOVERED AS DESCRIBED.  NOTE= THE STATION IS ALSO ABOUT 0.1 MILES
 JV1839'(0.2 KM) EAST ALONG THE RAILROAD TRACKS FROM STATE HIGHWAY 194 IN
 JV1839'KEYMAR.
 JV1839
 JV1839                          STATION RECOVERY (2010)
 JV1839
 JV1839'RECOVERY NOTE BY GEOCACHING 2010 (DPB)
 JV1839'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1022 ***********************************************************************
 HU1022  DESIGNATION -  A 141
 HU1022  PID         -  HU1022
 HU1022  STATE/COUNTY-  MD/WORCESTER
 HU1022  COUNTRY     -  US
 HU1022  USGS QUAD   -  WHITTINGTON POINT (2016)
 HU1022
 HU1022                         *CURRENT SURVEY CONTROL
 HU1022  ______________________________________________________________________
 HU1022* NAD 83(2011) POSITION- 38 02 16.68792(N) 075 14 15.26228(W)   ADJUSTED
 HU1022* NAD 83(2011) ELLIP HT-   -35.199 (meters)        (06/05/19)   ADJUSTED
 HU1022* NAD 83(2011) EPOCH   -  2010.00
 HU1022* NAVD 88 ORTHO HEIGHT -     1.264 (meters)        4.15  (feet) ADJUSTED
 HU1022  ______________________________________________________________________
 HU1022  GEOID HEIGHT    -        -36.417 (meters)                     GEOID18
 HU1022  NAD 83(2011) X  -  1,281,653.323 (meters)                     COMP
 HU1022  NAD 83(2011) Y  - -4,863,775.442 (meters)                     COMP
 HU1022  NAD 83(2011) Z  -  3,908,742.431 (meters)                     COMP
 HU1022  LAPLACE CORR    -          0.67  (seconds)                    DEFLEC18
 HU1022  DYNAMIC HEIGHT  -          1.263 (meters)        4.14  (feet) COMP
 HU1022  MODELED GRAVITY -    979,975.5   (mgal)                       NAVD 88
 HU1022
 HU1022  VERT ORDER      -  SECOND    CLASS I
 HU1022
 HU1022  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1022  Standards:
 HU1022         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1022            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1022  -------------------------------------------------------------------
 HU1022  NETWORK    0.96   0.80           0.47   0.25   0.41     -0.00242896
 HU1022  -------------------------------------------------------------------
 HU1022  Click here for local accuracies and other accuracy information.
 HU1022
 HU1022.The horizontal coordinates were established by GPS observations
 HU1022.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 HU1022
 HU1022.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1022.been affixed to the stable North American tectonic plate. See 
 HU1022.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1022
 HU1022.The horizontal coordinates are valid at the epoch date displayed above
 HU1022.which is a decimal equivalence of Year/Month/Day.
 HU1022
 HU1022.The orthometric height was determined by differential leveling and
 HU1022.adjusted by the NATIONAL GEODETIC SURVEY
 HU1022.in June 1991.
 HU1022
 HU1022.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1022.GEOID18 height accuracy estimate available here.
 HU1022
 HU1022.Click photographs - Photos may exist for this station.
 HU1022
 HU1022.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1022
 HU1022.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1022
 HU1022.The ellipsoidal height was determined by GPS observations
 HU1022.and is referenced to NAD 83.
 HU1022
 HU1022.The dynamic height is computed by dividing the NAVD 88
 HU1022.geopotential number by the normal gravity value computed on the
 HU1022.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1022.degrees latitude (g = 980.6199 gals.).
 HU1022
 HU1022.The modeled gravity was interpolated from observed gravity values.
 HU1022
 HU1022. The following values were computed from the NAD 83(2011) position.
 HU1022
 HU1022;                    North         East     Units Scale Factor Converg.
 HU1022;SPC MD       -    42,710.265   554,717.506   MT  1.00005591   +1 06 22.2
 HU1022;SPC MD       -   140,125.26  1,819,935.68   sFT  1.00005591   +1 06 22.2
 HU1022;UTM  18      - 4,210,054.391   479,152.482   MT  0.99960535   -0 08 47.0
 HU1022
 HU1022!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1022!SPC MD       -   1.00000552  x   1.00005591  =   1.00006143
 HU1022!UTM  18      -   1.00000552  x   0.99960535  =   0.99961087
 HU1022
 HU1022_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7915210054(NAD 83)
 HU1022
 HU1022                          SUPERSEDED SURVEY CONTROL
 HU1022
 HU1022  NGVD 29 (11/26/84)    1.507  (m)            4.94   (f) ADJUSTED    2 1
 HU1022
 HU1022.Superseded values are not recommended for survey control.
 HU1022
 HU1022.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1022.See file dsdata.pdf to determine how the superseded data were derived.
 HU1022
 HU1022_MARKER: DV = VERTICAL CONTROL DISK
 HU1022_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1022+WITH SETTING: INTO GROUND
 HU1022_STAMPING: A 141 1977
 HU1022_MARK LOGO: NGS
 HU1022_PROJECTION: PROJECTING 20 CENTIMETERS
 HU1022_MAGNETIC: I = MARKER IS A STEEL ROD
 HU1022_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1022+STABILITY: SURFACE MOTION
 HU1022_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1022+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 HU1022
 HU1022  HISTORY     - Date     Condition        Report By
 HU1022  HISTORY     - 1977     MONUMENTED       NGS
 HU1022  HISTORY     - 1989     GOOD             USPSQD
 HU1022  HISTORY     - 20130305 GOOD             ARCSHE
 HU1022  HISTORY     - 20150316 GOOD             NPS
 HU1022
 HU1022                          STATION DESCRIPTION
 HU1022
 HU1022'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1022'IN ASSATEAGUE ISLAND.
 HU1022'0.8 MILE NORTHEAST ALONG THE SERVICE ROAD FROM  THE STATE LINE
 HU1022'ON ASSATEAGUE ISLAND, 15 FEET SOUTHEAST OF THE CENTERLINE OF THE ROAD,
 HU1022'7 FEET NORTHEAST OF POWERLINE POLE 444.
 HU1022
 HU1022                          STATION RECOVERY (1989)
 HU1022
 HU1022'RECOVERY NOTE BY US POWER SQUADRON 1989 (RBD)
 HU1022'RECOVERED IN GOOD CONDITION.
 HU1022
 HU1022                          STATION RECOVERY (2013)
 HU1022
 HU1022'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU1022'THE MARK IS LOCATED ABOUT 9.6 MI (15.4 KM) EAST-SOUTHEAST OF
 HU1022'GIRDLETREE, 9.5 MI (15.3 KM) EAST OF STOCKTON AND 8.1 MI (13.0 KM)
 HU1022'SOUTHEAST OF BOXIRON ON ASSATEAGUE ISLAND.  OWNERSHIP--U.S.
 HU1022'GOVERNMENT.
 HU1022'
 HU1022'TO REACH FROM THE SOUTHEAST END OF THE VERRAZANO BRIDGE OVER
 HU1022'SINEPUXENT BAY, GO SOUTHEAST ON MD 611 FOR 0.62 MI (1.0 KM) TO A SIDE
 HU1022'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ON STEPHEN DECATUR
 HU1022'MEMORIAL ROAD FOR 2.27 MI (3.7 KM) TO A PARK RANGER BOOTH.  CONTINUE
 HU1022'SOUTHWEST ON STEPHEN DECATUR MEMORIAL ROAD FOR 1.22 MI (2.0 KM) TO A
 HU1022'TRAFFIC CIRCLE.  TAKE THE SECOND EXIT AND CONTINUE SOUTHWEST ON
 HU1022'BAYBERRY DRIVE FOR 0.19 MI (0.3 KM) TO THE END OF THE PAVEMENT.
 HU1022'ACTIVATE FOUR WHEEL DRIVE AND CONTINUE SOUTHWEST ON A SAND ROAD AND
 HU1022'ALONG THE BEACH FOR 11.37 MI (18.3 KM) AND PARK VEHICLE.  WALK
 HU1022'NORTHWEST FOR 600 FT (182.9 M) TO THE MARK.
 HU1022'
 HU1022'IT IS 33.5 FT (10.2 M) SOUTHEAST OF THE CENTERLINE OF AN OLD BLACKTOP
 HU1022'ROADBED AND 2.0 FT (0.6 M) EAST OF A FIBERGLASS WITNESS POST.
 HU1022
 HU1022                          STATION RECOVERY (2015)
 HU1022
 HU1022'RECOVERY NOTE BY NATIONAL PARK SERVICE 2015 (NTW)
 HU1022'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3959 ***********************************************************************
 JV3959  DESIGNATION -  A 143
 JV3959  PID         -  JV3959
 JV3959  STATE/COUNTY-  MD/WASHINGTON
 JV3959  COUNTRY     -  US
 JV3959  USGS QUAD   -  HAGERSTOWN (2016)
 JV3959
 JV3959                         *CURRENT SURVEY CONTROL
 JV3959  ______________________________________________________________________
 JV3959* NAD 83(1986) POSITION- 39 41 12.     (N) 077 43 15.     (W)   SCALED
 JV3959* NAVD 88 ORTHO HEIGHT -   196.207 (meters)      643.72  (feet) ADJUSTED
 JV3959  ______________________________________________________________________
 JV3959  GEOID HEIGHT    -        -34.220 (meters)                     GEOID18
 JV3959  DYNAMIC HEIGHT  -        196.091 (meters)      643.34  (feet) COMP
 JV3959  MODELED GRAVITY -    980,032.3   (mgal)                       NAVD 88
 JV3959  OBS GRAVITY     -    980,031.9   (mgal)                       GRAV_OBS
 JV3959
 JV3959  VERT ORDER      -  FIRST     CLASS II
 JV3959
 JV3959.The horizontal coordinates were scaled from a map and have
 JV3959.an estimated accuracy of +/- 6 seconds.
 JV3959
 JV3959.The orthometric height was determined by differential leveling and
 JV3959.adjusted by the NATIONAL GEODETIC SURVEY
 JV3959.in June 1991.
 JV3959
 JV3959.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3959.GEOID18 height accuracy estimate available here.
 JV3959
 JV3959.Click photographs - Photos may exist for this station.
 JV3959
 JV3959.The dynamic height is computed by dividing the NAVD 88
 JV3959.geopotential number by the normal gravity value computed on the
 JV3959.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3959.degrees latitude (g = 980.6199 gals.).
 JV3959
 JV3959.The modeled gravity was interpolated from observed gravity values.
 JV3959
 JV3959.The observed gravity was obtained from relative gravimeter ties
 JV3959.to the IGSN71 gravity network.
 JV3959
 JV3959;                    North         East    Units  Estimated Accuracy
 JV3959;SPC MD       -   224,490.      338,160.      MT  (+/- 180 meters Scaled)
 JV3959
 JV3959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ666965(NAD 83)
 JV3959
 JV3959                          SUPERSEDED SURVEY CONTROL
 JV3959
 JV3959.No superseded survey control is available for this station.
 JV3959
 JV3959_MARKER: DV = VERTICAL CONTROL DISK
 JV3959_SETTING: 66 = SET IN ROCK OUTCROP
 JV3959_STAMPING: A 143 1979
 JV3959_MARK LOGO: NGS
 JV3959_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3959+STABILITY: POSITION/ELEVATION WELL
 JV3959
 JV3959  HISTORY     - Date     Condition        Report By
 JV3959  HISTORY     - 1979     MONUMENTED       NGS
 JV3959  HISTORY     - 20071220 MARK NOT FOUND   GEOCAC
 JV3959
 JV3959                          STATION DESCRIPTION
 JV3959
 JV3959'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3959'3.05 MI NORTH FROM HAGERSTOWN.
 JV3959'3.05 MILES NORTH AAONG U.S. HIGHWAY 11 FROM THE COURTHOUSE AT
 JV3959'HAGERSTOWN TO THE MARK ON THE LEFT, AT THE JUNCTION OF U.S. HIGHWAY
 JV3959'11 AND MAUGANS AVENUE, 144 FEET NORTH OF THE CENTER LINE OF MAUGANS
 JV3959'AVENUE, 58.5 FEET SOUTH OF POWER POLE NUMBER RA 127 A, 47 FEET
 JV3959'SOUTHEAST OF THE SOUTHEAST CORNER OF A BLOCK STORE BUILDING, 41.5
 JV3959'FEET NORTH OF POWER POLE NUMBER RA 128, AND 25 FEET WEST OF THE
 JV3959'CENTER LINE OF THE HIGHWAY, AND 196.5 FEET NORTH OF BENCH MARK P 46.
 JV3959'THE MARK IS 2 FT ABOVE HIGHWAY.
 JV3959
 JV3959                          STATION RECOVERY (2007)
 JV3959
 JV3959'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV3959'RT. 11 AND MAUGANS AVE. HAVE BEEN WIDENED. POLES HAVE BEEN RELOCATED,
 JV3959'NEW STORES CONSTRUCTED AND LAT. AND LONG. COORDS. PLACE
 JV3959'THE MARK UNDER PAVING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3885 ***********************************************************************
 JV3885  DESIGNATION -  A 146
 JV3885  PID         -  JV3885
 JV3885  STATE/COUNTY-  MD/WASHINGTON
 JV3885  COUNTRY     -  US
 JV3885  USGS QUAD   -  HARPERS FERRY (2016)
 JV3885
 JV3885                         *CURRENT SURVEY CONTROL
 JV3885  ______________________________________________________________________
 JV3885* NAD 83(1986) POSITION- 39 19 43.67   (N) 077 42 16.16   (W)   HD_HELD1
 JV3885* NAVD 88 ORTHO HEIGHT -   112.127 (meters)      367.87  (feet) ADJUSTED
 JV3885  ______________________________________________________________________
 JV3885  GEOID HEIGHT    -        -33.346 (meters)                     GEOID18
 JV3885  DYNAMIC HEIGHT  -        112.063 (meters)      367.66  (feet) COMP
 JV3885  MODELED GRAVITY -    980,051.0   (mgal)                       NAVD 88
 JV3885
 JV3885  VERT ORDER      -  FIRST     CLASS II
 JV3885
 JV3885.The horizontal coordinates were determined by differentially corrected
 JV3885.hand held GPS observations or other comparable positioning techniques
 JV3885.and have an estimated accuracy of +/- 3 meters.
 JV3885
 JV3885.The orthometric height was determined by differential leveling and
 JV3885.adjusted by the NATIONAL GEODETIC SURVEY
 JV3885.in June 1991.
 JV3885
 JV3885.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3885.GEOID18 height accuracy estimate available here.
 JV3885
 JV3885.Click photographs - Photos may exist for this station.
 JV3885
 JV3885.The dynamic height is computed by dividing the NAVD 88
 JV3885.geopotential number by the normal gravity value computed on the
 JV3885.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3885.degrees latitude (g = 980.6199 gals.).
 JV3885
 JV3885.The modeled gravity was interpolated from observed gravity values.
 JV3885
 JV3885;                    North         East    Units  Estimated Accuracy
 JV3885;SPC MD       -   184,741.9     339,257.9     MT  (+/- 3 meters HH1 GPS) 
 JV3885
 JV3885_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6688456752(NAD 83)
 JV3885
 JV3885                          SUPERSEDED SURVEY CONTROL
 JV3885
 JV3885.No superseded survey control is available for this station.
 JV3885
 JV3885_MARKER: DV = VERTICAL CONTROL DISK
 JV3885_SETTING: 66 = SET IN ROCK OUTCROP
 JV3885_STAMPING: A 146 1979
 JV3885_MARK LOGO: NGS
 JV3885_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3885+STABILITY: POSITION/ELEVATION WELL
 JV3885_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3885+SATELLITE: SATELLITE OBSERVATIONS - September 07, 2019
 JV3885
 JV3885  HISTORY     - Date     Condition        Report By
 JV3885  HISTORY     - 1979     MONUMENTED       NGS
 JV3885  HISTORY     - 1979     GOOD             NGS
 JV3885  HISTORY     - 20040730 GOOD             NAGEL
 JV3885  HISTORY     - 20070906 GOOD             GEOCAC
 JV3885  HISTORY     - 20190907 GOOD             INDIV
 JV3885
 JV3885                          STATION DESCRIPTION
 JV3885
 JV3885'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3885'1.0 MI EAST FROM WEVERTON.
 JV3885'1.0 MILE EAST ALONG U.S. HIGHWAY 340 FROM THE NORTH END OF THE STATE
 JV3885'ROUTE 67 OVERPASS BRIDGE OVER HIGHWAY 340 TO THE MARK ON THE RIGHT,
 JV3885'SET IN A ROCK CUT DIRECTLY ACROSS THE HIGHWAY FROM THE EXIT RAMP FOR
 JV3885'STATE ROUTE 180, 0.1 MILE NORTHEAST OF MARYLAND STATE LINE SIGN AT
 JV3885'THE POTOMAC RIVER, 45 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY
 JV3885'42 FEET SOUTHWEST OF A ROAD SIGN READING 340 WEST SNOW EMERGENCY
 JV3885'ROUTE.
 JV3885'THE MARK IS 1 FT  SW FROM A WITNESS POST.
 JV3885'THE MARK IS 7 FT ABOVE HIGHWAY.
 JV3885
 JV3885                          STATION RECOVERY (1979)
 JV3885
 JV3885'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3885'RECOVERED IN GOOD CONDITION.
 JV3885
 JV3885                          STATION RECOVERY (2004)
 JV3885
 JV3885'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2004 (GEN)
 JV3885'ORIGINAL DESCRIPTION IN ERROR. SHOULD READ 1.0 MI WEST FROM WEAVERTON.
 JV3885'1.0 MILE WEST ALONG U.S. HIGHWAY 340 FROM THE NORTH END OF THE STATE
 JV3885'ROUTE 67 OVERPASS BRIDGE OVER HIGHWAY 340 TO THE MARK ON THE RIGHT...
 JV3885
 JV3885                          STATION RECOVERY (2007)
 JV3885
 JV3885'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV3885'RECOVERED IN GOOD CONDITION.
 JV3885
 JV3885                          STATION RECOVERY (2019)
 JV3885
 JV3885'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2019 (MFM)
 JV3885'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7849 ***********************************************************************
 HV7849  DESIGNATION -  A 147
 HV7849  PID         -  HV7849
 HV7849  STATE/COUNTY-  MD/MONTGOMERY
 HV7849  COUNTRY     -  US
 HV7849  USGS QUAD   -  WASHINGTON WEST (2016)
 HV7849
 HV7849                         *CURRENT SURVEY CONTROL
 HV7849  ______________________________________________________________________
 HV7849* NAD 83(1986) POSITION- 38 58 19.     (N) 077 05 24.     (W)   SCALED
 HV7849* NAVD 88 ORTHO HEIGHT -   101.806 (meters)      334.01  (feet) ADJUSTED
 HV7849  ______________________________________________________________________
 HV7849  GEOID HEIGHT    -        -31.897 (meters)                     GEOID18
 HV7849  DYNAMIC HEIGHT  -        101.751 (meters)      333.83  (feet) COMP
 HV7849  MODELED GRAVITY -    980,086.3   (mgal)                       NAVD 88
 HV7849
 HV7849  VERT ORDER      -  FIRST     CLASS II
 HV7849
 HV7849.The horizontal coordinates were scaled from a map and have
 HV7849.an estimated accuracy of +/- 6 seconds.
 HV7849
 HV7849.The orthometric height was determined by differential leveling and
 HV7849.adjusted by the NATIONAL GEODETIC SURVEY
 HV7849.in June 1991.
 HV7849
 HV7849.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7849.GEOID18 height accuracy estimate available here.
 HV7849
 HV7849.Click photographs - Photos may exist for this station.
 HV7849
 HV7849.The dynamic height is computed by dividing the NAVD 88
 HV7849.geopotential number by the normal gravity value computed on the
 HV7849.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7849.degrees latitude (g = 980.6199 gals.).
 HV7849
 HV7849.The modeled gravity was interpolated from observed gravity values.
 HV7849
 HV7849;                    North         East    Units  Estimated Accuracy
 HV7849;SPC MD       -   144,900.      392,200.      MT  (+/- 180 meters Scaled)
 HV7849
 HV7849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ189157(NAD 83)
 HV7849
 HV7849                          SUPERSEDED SURVEY CONTROL
 HV7849
 HV7849.No superseded survey control is available for this station.
 HV7849
 HV7849_MARKER: DV = VERTICAL CONTROL DISK
 HV7849_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV7849_STAMPING: A 147 1979
 HV7849_MARK LOGO: NGS
 HV7849_PROJECTION: RECESSED 10 CENTIMETERS
 HV7849_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7849_ROD/PIPE-DEPTH: 4.6 meters
 HV7849
 HV7849  HISTORY     - Date     Condition        Report By
 HV7849  HISTORY     - 1979     MONUMENTED       NGS
 HV7849  HISTORY     - 20020312 MARK NOT FOUND   USPSQD
 HV7849
 HV7849                          STATION DESCRIPTION
 HV7849
 HV7849'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 HV7849'IN SOMERSET.
 HV7849'IN SOMERSET SET AT THE JUNCTION OF WISCONSIN AVENUE AND LANGDRUM
 HV7849'LANE, IN THE SOUTHEAST CORNER OF LANGDRUM LANE DIRECTLY BEHIND A
 HV7849'CIRCULAR STONE PILLAR SUPPORTING A METAL PIPE PROJECTING 3 FEET,
 HV7849'1.5 FEET WEST OF THE PILLAR, 1.5 FEET SOUTHEAST OF A STOP SIGN,
 HV7849'4 FEET SOUTH OF THE SOUTH CURB OF LANGDRUM LANE, 31 FEET WEST
 HV7849'OF THE WEST CURB OF THE AVENUE, 35.5 FEET NORTHWEST OF A U.S.
 HV7849'MAIL BOX.
 HV7849'THE MARK IS 2 FT  SE FROM A WITNESS POST.
 HV7849'THE MARK IS ABOVE LEVEL WITH AVENUE.
 HV7849
 HV7849                          STATION RECOVERY (2002)
 HV7849
 HV7849'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV7849'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3891 ***********************************************************************
 JV3891  DESIGNATION -  A 148
 JV3891  PID         -  JV3891
 JV3891  STATE/COUNTY-  MD/CECIL
 JV3891  COUNTRY     -  US
 JV3891  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV3891
 JV3891                         *CURRENT SURVEY CONTROL
 JV3891  ______________________________________________________________________
 JV3891* NAD 83(1986) POSITION- 39 35 05.     (N) 076 05 53.     (W)   SCALED
 JV3891* NAVD 88 ORTHO HEIGHT -     7.429 (meters)       24.37  (feet) ADJUSTED
 JV3891  ______________________________________________________________________
 JV3891  GEOID HEIGHT    -        -33.071 (meters)                     GEOID18
 JV3891  DYNAMIC HEIGHT  -          7.425 (meters)       24.36  (feet) COMP
 JV3891  MODELED GRAVITY -    980,130.1   (mgal)                       NAVD 88
 JV3891
 JV3891  VERT ORDER      -  FIRST     CLASS II
 JV3891
 JV3891.The horizontal coordinates were scaled from a map and have
 JV3891.an estimated accuracy of +/- 6 seconds.
 JV3891
 JV3891.The orthometric height was determined by differential leveling and
 JV3891.adjusted by the NATIONAL GEODETIC SURVEY
 JV3891.in June 1991.
 JV3891
 JV3891.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3891.GEOID18 height accuracy estimate available here.
 JV3891
 JV3891.Click photographs - Photos may exist for this station.
 JV3891
 JV3891.The dynamic height is computed by dividing the NAVD 88
 JV3891.geopotential number by the normal gravity value computed on the
 JV3891.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3891.degrees latitude (g = 980.6199 gals.).
 JV3891
 JV3891.The modeled gravity was interpolated from observed gravity values.
 JV3891
 JV3891;                    North         East    Units  Estimated Accuracy
 JV3891;SPC MD       -   213,300.      477,490.      MT  (+/- 180 meters Scaled)
 JV3891
 JV3891_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ057822(NAD 83)
 JV3891
 JV3891                          SUPERSEDED SURVEY CONTROL
 JV3891
 JV3891.No superseded survey control is available for this station.
 JV3891
 JV3891_MARKER: DV = VERTICAL CONTROL DISK
 JV3891_SETTING: 66 = SET IN ROCK OUTCROP
 JV3891_STAMPING: A 148 1979
 JV3891_MARK LOGO: NGS
 JV3891_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3891+STABILITY: POSITION/ELEVATION WELL
 JV3891
 JV3891  HISTORY     - Date     Condition        Report By
 JV3891  HISTORY     - 1979     MONUMENTED       NGS
 JV3891
 JV3891                          STATION DESCRIPTION
 JV3891
 JV3891'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3891'1.8 MI SOUTH FROM PORT DEPOSIT.
 JV3891'1.85 MILES SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV3891'IN PORT DEPOSIT, ALSO 2.4 MILES NORTH OF THE STATION IN
 JV3891'PERRYVILLE, ABOUT .05 MILE NORTHWEST OF THE OVERPASS OF HIGHWAY 95
 JV3891'OVER THE TRACKS, ON THE INSIDE OF A CURVE AND SET IN THE
 JV3891'SOUTHWEST FACE OF A 25 FOOT HIGH SOLID ROCK CUT, 15 FEET NORTHEAST
 JV3891'OF THE NORTHEAST RAIL. 27 FEET SOUTHEAST OF THE FIRST TROLLY POLE
 JV3891'NORTHWEST OF THE OVERPASS , 2.5 FEET ABOVE LEVEL OF TRACKS.
 JV3891'THE MARK IS 2.5 FT ABOVE TRACKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0762 ***********************************************************************
 JW0762  DESIGNATION -  A 15
 JW0762  PID         -  JW0762
 JW0762  STATE/COUNTY-  MD/GARRETT
 JW0762  COUNTRY     -  US
 JW0762  USGS QUAD   -  GORMAN (2016)
 JW0762
 JW0762                         *CURRENT SURVEY CONTROL
 JW0762  ______________________________________________________________________
 JW0762* NAD 83(1986) POSITION- 39 17 38.28   (N) 079 20 46.90   (W)   HD_HELD1
 JW0762* NAVD 88 ORTHO HEIGHT -   707.442 (meters)     2321.00  (feet) ADJUSTED
 JW0762  ______________________________________________________________________
 JW0762  GEOID HEIGHT    -        -31.095 (meters)                     GEOID18
 JW0762  DYNAMIC HEIGHT  -        706.953 (meters)     2319.40  (feet) COMP
 JW0762  MODELED GRAVITY -    979,912.0   (mgal)                       NAVD 88
 JW0762
 JW0762  VERT ORDER      -  SECOND    CLASS 0
 JW0762
 JW0762.The horizontal coordinates were determined by differentially corrected
 JW0762.hand held GPS observations or other comparable positioning techniques
 JW0762.and have an estimated accuracy of +/- 3 meters.
 JW0762
 JW0762.The orthometric height was determined by differential leveling and
 JW0762.adjusted by the NATIONAL GEODETIC SURVEY
 JW0762.in June 1991.
 JW0762
 JW0762.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0762.GEOID18 height accuracy estimate available here.
 JW0762
 JW0762.Click photographs - Photos may exist for this station.
 JW0762
 JW0762.The dynamic height is computed by dividing the NAVD 88
 JW0762.geopotential number by the normal gravity value computed on the
 JW0762.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0762.degrees latitude (g = 980.6199 gals.).
 JW0762
 JW0762.The modeled gravity was interpolated from observed gravity values.
 JW0762
 JW0762;                    North         East    Units  Estimated Accuracy
 JW0762;SPC MD       -   183,241.7     197,614.0     MT  (+/- 3 meters HH1 GPS) 
 JW0762
 JW0762_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4260150702(NAD 83)
 JW0762
 JW0762                          SUPERSEDED SURVEY CONTROL
 JW0762
 JW0762  NGVD 29 (??/??/92)  707.581  (m)         2321.46   (f) ADJ UNCH    2 0
 JW0762
 JW0762.Superseded values are not recommended for survey control.
 JW0762
 JW0762.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0762.See file dsdata.pdf to determine how the superseded data were derived.
 JW0762
 JW0762_MARKER: DB = BENCH MARK DISK
 JW0762_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0762_STAMPING: A 15 1935
 JW0762_MARK LOGO: CGS
 JW0762_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0762+STABILITY: SURFACE MOTION
 JW0762
 JW0762  HISTORY     - Date     Condition        Report By
 JW0762  HISTORY     - 1935     MONUMENTED       CGS
 JW0762
 JW0762                          STATION DESCRIPTION
 JW0762
 JW0762'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0762'AT GORMAN.
 JW0762'AT GORMAN, GARRETT COUNTY, ON THE WESTERN MARYLAND RAILWAY, 3-1/2
 JW0762'POLES SOUTHWEST OF THE STATION, 11 RAILS NORTHEAST OF THE
 JW0762'MARYLAND SIDE OF THE OVERPASS OVER THE TRACKS AND POTOMAC RIVER,
 JW0762'OPPOSITE THE END OF AN UNUSED STEEL BRIDGE, 36 FEET EAST OF THE
 JW0762'CENTERLINE OF U.S. HIGHWAY 50, AND 18 FEET WEST OF THE CENTERLINE
 JW0762'OF THE TRACK.  A STANDARD DISK, STAMPED A 15 1935 AND SET IN THE
 JW0762'TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8864 ***********************************************************************
 HV8864  DESIGNATION -  A 15
 HV8864  PID         -  HV8864
 HV8864  STATE/COUNTY-  MD/ST MARYS
 HV8864  COUNTRY     -  US
 HV8864  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV8864
 HV8864                         *CURRENT SURVEY CONTROL
 HV8864  ______________________________________________________________________
 HV8864* NAD 83(1986) POSITION- 38 10 30.     (N) 076 24 36.     (W)   SCALED
 HV8864* NAVD 88 ORTHO HEIGHT -    12.173 (meters)       39.94  (feet) ADJUSTED
 HV8864  ______________________________________________________________________
 HV8864  GEOID HEIGHT    -        -34.848 (meters)                     GEOID18
 HV8864  DYNAMIC HEIGHT  -         12.165 (meters)       39.91  (feet) COMP
 HV8864  MODELED GRAVITY -    979,989.9   (mgal)                       NAVD 88
 HV8864
 HV8864  VERT ORDER      -  SECOND    CLASS II
 HV8864
 HV8864.The horizontal coordinates were scaled from a map and have
 HV8864.an estimated accuracy of +/- 6 seconds.
 HV8864
 HV8864.The orthometric height was determined by differential leveling and
 HV8864.adjusted by the NATIONAL GEODETIC SURVEY
 HV8864.in June 1991.
 HV8864
 HV8864.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8864.GEOID18 height accuracy estimate available here.
 HV8864
 HV8864.Click photographs - Photos may exist for this station.
 HV8864
 HV8864.The dynamic height is computed by dividing the NAVD 88
 HV8864.geopotential number by the normal gravity value computed on the
 HV8864.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8864.degrees latitude (g = 980.6199 gals.).
 HV8864
 HV8864.The modeled gravity was interpolated from observed gravity values.
 HV8864
 HV8864;                    North         East    Units  Estimated Accuracy
 HV8864;SPC MD       -    56,600.      451,700.      MT  (+/- 180 meters Scaled)
 HV8864
 HV8864_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH764261(NAD 83)
 HV8864
 HV8864                          SUPERSEDED SURVEY CONTROL
 HV8864
 HV8864.No superseded survey control is available for this station.
 HV8864
 HV8864_MARKER: DD = SURVEY DISK
 HV8864_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8864_STAMPING: BM A-15 1977 DMATC
 HV8864_MARK LOGO: DMA
 HV8864_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8864_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8864+STABILITY: SURFACE MOTION
 HV8864_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8864+SATELLITE: SATELLITE OBSERVATIONS - January 03, 1991
 HV8864
 HV8864  HISTORY     - Date     Condition        Report By
 HV8864  HISTORY     - 1977     MONUMENTED       DMA
 HV8864  HISTORY     - 19910103 GOOD             NGS
 HV8864  HISTORY     - 19990130 GOOD             USPSQD
 HV8864  HISTORY     - 20050618 GOOD             USPSQD
 HV8864
 HV8864                          STATION DESCRIPTION
 HV8864
 HV8864'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 HV8864'3.0 KM (1.9 MI) NORTHWESTERLY ALONG STATE HIGHWAY 5 FROM THE POST
 HV8864'OFFICE IN ST. INIGOES, 25.1 M (82.3 FT) SOUTHWEST OF THE HIGHWAY
 HV8864'CENTERLINE, 23.6 M (77.4 FT) NORTHWEST OF THE CENTER OF A DRIVEWAY,
 HV8864'19.9 M (65.3 FT) SOUTHEAST OF THE CENTER OF 18 WHEELS DRIVE, 12.6 M
 HV8864'(41.3 FT) NORTHEAST OF UTILITY POLE NUMBER 212 WITH ONE GUY WIRE, 1.4
 HV8864'M (4.6 FT) SOUTHEAST OF UTILITY POLE NUMBER 427 WITH TWO GUY WIRES,
 HV8864'0.9 M (3.0 FT) NORTHEAST OF A WITNESS POST, 0.3 M (1.0 FT) ABOVE THE
 HV8864'LEVEL OF THE HIGHWAY, AND THE MONUMENT IS FLUSH WITH THE GROUND
 HV8864'SURFACE.
 HV8864
 HV8864                          STATION RECOVERY (1999)
 HV8864
 HV8864'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV8864'RECOVERED IN GOOD CONDITION.
 HV8864
 HV8864                          STATION RECOVERY (2005)
 HV8864
 HV8864'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPF)
 HV8864'HV8864
 HV8864'THE DESCRIPTION HAS BEEN MODIFIED TO REFLECT CHANGES TO REFERENCED
 HV8864'POINTS AND DISTANCES.  UTILITY POLES 212 HAS BEEN REMOVED, UTILITY
 HV8864'POLE 427 HAS BEEN REPLACED AND IS NOW HAS 3 GUY WIRES.   ALSO, THE
 HV8864'WITNESS POST HAS BEEN REMOVED.
 HV8864'
 HV8864'STATION IS LOCATED ALONG STATE HIGHWAY 5, 3.0 KM (1.9 MI)
 HV8864'NORTHWESTERLY FROM THE POST OFFICE IN ST. INIGOES.
 HV8864'TO REACH THE STATION, TRAVEL NORTH ON STATE HIGHWAYS 5 (LEONARDTOWN
 HV8864'POINT LOOKOUT ROAD) 3.0 KM (1.9 MI) NORTH FROM THE POST OFFICE IN ST.
 HV8864'INIGOES WITH THE STATION ON THE LEFT.
 HV8864'THE STATION IS A BRASS SURVEY DISK SET IN THE TOP OF AN 8 INCH ROUND
 HV8864'CONCRETE MONUMENT FLUSH WITH THE GROUND AND IS 25.1 M (82.3 FT)
 HV8864'SOUTHWEST OF THE CENTERLINE OF HIGHWAY 5, 19.9 M (65.3 FT) SOUTHEAST
 HV8864'OF THE CENTER OF THE DRIVEWAY AT 18 WHEELS DRIVE, 1.2 M (3.9 FT)
 HV8864'SOUTHEAST OF UTILITY POLE NO. 427 WITH THREE GUY WIRES.
 HV8864'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2750 ***********************************************************************
 JV2750  DESIGNATION -  A 16 RESET 1955
 JV2750  PID         -  JV2750
 JV2750  STATE/COUNTY-  MD/MONTGOMERY
 JV2750  COUNTRY     -  US
 JV2750  USGS QUAD   -  KENSINGTON (2016)
 JV2750
 JV2750                         *CURRENT SURVEY CONTROL
 JV2750  ______________________________________________________________________
 JV2750* NAD 83(1986) POSITION- 39 00 36.     (N) 077 00 30.     (W)   SCALED
 JV2750* NAVD 88 ORTHO HEIGHT -    90.28  (meters)      296.2   (feet) RESET
 JV2750  ______________________________________________________________________
 JV2750  GEOID HEIGHT    -        -31.990 (meters)                     GEOID18
 JV2750  VERT ORDER      -  THIRD
 JV2750
 JV2750.The horizontal coordinates were scaled from a map and have
 JV2750.an estimated accuracy of +/- 6 seconds.
 JV2750
 JV2750.The orthometric height was computed from unverified reset data.
 JV2750
 JV2750.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2750.GEOID18 height accuracy estimate available here.
 JV2750
 JV2750.Click photographs - Photos may exist for this station.
 JV2750
 JV2750;                    North         East    Units  Estimated Accuracy
 JV2750;SPC MD       -   149,120.      399,280.      MT  (+/- 180 meters Scaled)
 JV2750
 JV2750_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ261198(NAD 83)
 JV2750
 JV2750                          SUPERSEDED SURVEY CONTROL
 JV2750
 JV2750  NGVD 29 (??/??/??)   90.49   (m)          296.9    (f) RESET       3  
 JV2750
 JV2750.Superseded values are not recommended for survey control.
 JV2750
 JV2750.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2750.See file dsdata.pdf to determine how the superseded data were derived.
 JV2750
 JV2750_MARKER: DB = BENCH MARK DISK
 JV2750_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2750_SP_SET: CATCH BASIN
 JV2750_STAMPING: A 16 RESET 1955
 JV2750_MARK LOGO: CGS
 JV2750_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2750
 JV2750  HISTORY     - Date     Condition        Report By
 JV2750  HISTORY     - 1955     MONUMENTED       CGS
 JV2750
 JV2750                          STATION DESCRIPTION
 JV2750
 JV2750'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV2750'AT FOUR CORNERS.
 JV2750'AT FOUR CORNERS, MONTGOMERY COUNTY, AT THE SOUTHWEST CORNER OF
 JV2750'THE INTERSECTION OF FRANKLIN AND FLOWER AVENUES, AT PEPCO POLE
 JV2750'NO. 720704 AND IN THE TOP OF THE SOUTHWEST CORNER OF A 7-FOOT
 JV2750'BY 3-1/2-FOOT CONCRETE CATCH BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3889 ***********************************************************************
 JV3889  DESIGNATION -  A 165
 JV3889  PID         -  JV3889
 JV3889  STATE/COUNTY-  MD/CECIL
 JV3889  COUNTRY     -  US
 JV3889  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV3889
 JV3889                         *CURRENT SURVEY CONTROL
 JV3889  ______________________________________________________________________
 JV3889* NAD 83(1986) POSITION- 39 34 09.     (N) 076 04 12.     (W)   SCALED
 JV3889* NAVD 88 ORTHO HEIGHT -    23.862 (meters)       78.29  (feet) ADJUSTED
 JV3889  ______________________________________________________________________
 JV3889  GEOID HEIGHT    -        -33.135 (meters)                     GEOID18
 JV3889  DYNAMIC HEIGHT  -         23.850 (meters)       78.25  (feet) COMP
 JV3889  MODELED GRAVITY -    980,125.5   (mgal)                       NAVD 88
 JV3889  OBS GRAVITY     -    980,125.1   (mgal)                       GRAV_OBS
 JV3889
 JV3889  VERT ORDER      -  FIRST     CLASS II
 JV3889
 JV3889.The horizontal coordinates were scaled from a map and have
 JV3889.an estimated accuracy of +/- 6 seconds.
 JV3889
 JV3889.The orthometric height was determined by differential leveling and
 JV3889.adjusted by the NATIONAL GEODETIC SURVEY
 JV3889.in June 1991.
 JV3889
 JV3889.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3889.GEOID18 height accuracy estimate available here.
 JV3889
 JV3889.Click photographs - Photos may exist for this station.
 JV3889
 JV3889.The dynamic height is computed by dividing the NAVD 88
 JV3889.geopotential number by the normal gravity value computed on the
 JV3889.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3889.degrees latitude (g = 980.6199 gals.).
 JV3889
 JV3889.The modeled gravity was interpolated from observed gravity values.
 JV3889
 JV3889.The observed gravity was obtained from relative gravimeter ties
 JV3889.to the IGSN71 gravity network.
 JV3889
 JV3889;                    North         East    Units  Estimated Accuracy
 JV3889;SPC MD       -   211,600.      479,910.      MT  (+/- 180 meters Scaled)
 JV3889
 JV3889_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ080804(NAD 83)
 JV3889
 JV3889                          SUPERSEDED SURVEY CONTROL
 JV3889
 JV3889.No superseded survey control is available for this station.
 JV3889
 JV3889_MARKER: I = METAL ROD
 JV3889_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV3889_STAMPING: A 165 1978
 JV3889_MARK LOGO: NGS
 JV3889_PROJECTION: FLUSH
 JV3889_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3889+STABILITY: POSITION/ELEVATION WELL
 JV3889_ROD/PIPE-DEPTH: 10.4 meters
 JV3889_SLEEVE-DEPTH  : 6.1 meters
 JV3889
 JV3889  HISTORY     - Date     Condition        Report By
 JV3889  HISTORY     - 1978     MONUMENTED       NGS
 JV3889  HISTORY     - 19901113 MARK NOT FOUND   USPSQD
 JV3889
 JV3889                          STATION DESCRIPTION
 JV3889
 JV3889'DESCRIBED BY NATIONAL GEODETIC SURVEY 1978
 JV3889'IN PERRYVILLE.
 JV3889'AT THE INTERSECTION OF US HIGHWAYS 40 AND 222, ON THE GROUNDS OF THE
 JV3889'PERRYVILLE MIDDLE SCHOOL, 110 FEET EAST OF THE CENTER LINE OF HIGHWAY
 JV3889'222, 92 FEET SOUTHEAST OF CONOWINGO POWER COMPANY POLE 24025, 52 FEET
 JV3889'WEST OF THE WEST FACE OF THE OLD SCHOOL BUILDING, 32 FEET NORTHEAST
 JV3889'OF A FLAGPOLE, 25 FEET EAST OF THE EAST CORNER OF A WAR MEMORIAL
 JV3889'TABLET, 18 FEET SOUTH OF A PAVED WALKWAY, AND 23 FEET WEST OF A 12 -
 JV3889'INCH TREE. THIS BENCH MARK HAS BEEN DESIGNATED A BASIC NET A LEVEL
 JV3889'LINE JUNCTION MARK.
 JV3889'THE MARK IS 2 FT BELOW HIGHWAY 222.
 JV3889
 JV3889                          STATION RECOVERY (1990)
 JV3889
 JV3889'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV3889'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1137 ***********************************************************************
 JW1137  DESIGNATION -  A 167
 JW1137  PID         -  JW1137
 JW1137  STATE/COUNTY-  MD/GARRETT
 JW1137  COUNTRY     -  US
 JW1137  USGS QUAD   -  OAKLAND (2016)
 JW1137
 JW1137                         *CURRENT SURVEY CONTROL
 JW1137  ______________________________________________________________________
 JW1137* NAD 83(1986) POSITION- 39 24 09.     (N) 079 28 02.     (W)   SCALED
 JW1137* NAVD 88 ORTHO HEIGHT -   767.804 (meters)     2519.04  (feet) ADJUSTED
 JW1137  ______________________________________________________________________
 JW1137  GEOID HEIGHT    -        -31.124 (meters)                     GEOID18
 JW1137  DYNAMIC HEIGHT  -        767.279 (meters)     2517.31  (feet) COMP
 JW1137  MODELED GRAVITY -    979,918.1   (mgal)                       NAVD 88
 JW1137
 JW1137  VERT ORDER      -  FIRST     CLASS II
 JW1137
 JW1137.The horizontal coordinates were scaled from a map and have
 JW1137.an estimated accuracy of +/- 6 seconds.
 JW1137
 JW1137.The orthometric height was determined by differential leveling and
 JW1137.adjusted by the NATIONAL GEODETIC SURVEY
 JW1137.in June 1991.
 JW1137
 JW1137.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1137.GEOID18 height accuracy estimate available here.
 JW1137
 JW1137.Click photographs - Photos may exist for this station.
 JW1137
 JW1137.The dynamic height is computed by dividing the NAVD 88
 JW1137.geopotential number by the normal gravity value computed on the
 JW1137.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1137.degrees latitude (g = 980.6199 gals.).
 JW1137
 JW1137.The modeled gravity was interpolated from observed gravity values.
 JW1137
 JW1137;                    North         East    Units  Estimated Accuracy
 JW1137;SPC MD       -   195,560.      187,520.      MT  (+/- 180 meters Scaled)
 JW1137
 JW1137_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD319625(NAD 83)
 JW1137
 JW1137                          SUPERSEDED SURVEY CONTROL
 JW1137
 JW1137.No superseded survey control is available for this station.
 JW1137
 JW1137_MARKER: DV = VERTICAL CONTROL DISK
 JW1137_SETTING: 66 = SET IN ROCK OUTCROP
 JW1137_STAMPING: A 167 1983
 JW1137_MARK LOGO: NGS
 JW1137_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1137+STABILITY: POSITION/ELEVATION WELL
 JW1137
 JW1137  HISTORY     - Date     Condition        Report By
 JW1137  HISTORY     - 1983     MONUMENTED       NGS
 JW1137
 JW1137                          STATION DESCRIPTION
 JW1137
 JW1137'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1137'7.6 KM (4.75 MI) EAST FROM OAKLAND.
 JW1137'7.6 KM (4.75 MI) EAST ALONG STATE HIGHWAY 39 FROM THE JUNCTION OF
 JW1137'U.S. HIGHWAY 219 IN OAKLAND TO THE MARK ON THE RIGHT, ON THE NORTH
 JW1137'SIDE OF A SINGLE STORY FRAME HOUSE IN A WOODED LOT, IN TOP OF THE WEST
 JW1137'END OF A 3.0 BY 4.9 METER (10 BY 16 FOOT) EXPOSED BEDROCK,
 JW1137'41.14 METERS (135.0 FT) EAST OF THE CENTERLINE OF THE HIGHWAY,
 JW1137'25.80 METERS (84.5 FT) NORTH OF THE NORTHWEST CORNER OF THE HOUSE,
 JW1137'7.31 METERS (24.0 FT) SOUTH OF A ROCK TRAIL ROAD.
 JW1137'THE MARK IS 0.30 METERS  N FROM A WITNESS POST.
 JW1137'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1163 ***********************************************************************
 JW1163  DESIGNATION -  A 168
 JW1163  PID         -  JW1163
 JW1163  STATE/COUNTY-  MD/ALLEGANY
 JW1163  COUNTRY     -  US
 JW1163  USGS QUAD   -  KEYSER (2016)
 JW1163
 JW1163                         *CURRENT SURVEY CONTROL
 JW1163  ______________________________________________________________________
 JW1163* NAD 83(1986) POSITION- 39 26 47.6    (N) 078 58 19.4    (W)   HD_HELD2
 JW1163* NAVD 88 ORTHO HEIGHT -   254.968 (meters)      836.51  (feet) ADJUSTED
 JW1163  ______________________________________________________________________
 JW1163  GEOID HEIGHT    -        -32.293 (meters)                     GEOID18
 JW1163  DYNAMIC HEIGHT  -        254.813 (meters)      836.00  (feet) COMP
 JW1163  MODELED GRAVITY -    980,011.7   (mgal)                       NAVD 88
 JW1163
 JW1163  VERT ORDER      -  FIRST     CLASS II
 JW1163
 JW1163.The horizontal coordinates were established by autonomous hand held GPS
 JW1163.observations and have an estimated accuracy of +/- 10 meters.
 JW1163
 JW1163.The orthometric height was determined by differential leveling and
 JW1163.adjusted by the NATIONAL GEODETIC SURVEY
 JW1163.in June 1991.
 JW1163
 JW1163.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1163.GEOID18 height accuracy estimate available here.
 JW1163
 JW1163.Click photographs - Photos may exist for this station.
 JW1163
 JW1163.The dynamic height is computed by dividing the NAVD 88
 JW1163.geopotential number by the normal gravity value computed on the
 JW1163.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1163.degrees latitude (g = 980.6199 gals.).
 JW1163
 JW1163.The modeled gravity was interpolated from observed gravity values.
 JW1163
 JW1163;                    North         East    Units  Estimated Accuracy
 JW1163;SPC MD       -   199,415.      230,260.      MT  (+/- 10 meters HH2 GPS)
 JW1163
 JW1163_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD7450168295(NAD 83)
 JW1163
 JW1163                          SUPERSEDED SURVEY CONTROL
 JW1163
 JW1163.No superseded survey control is available for this station.
 JW1163
 JW1163_MARKER: DV = VERTICAL CONTROL DISK
 JW1163_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW1163_SP_SET: ABUTMENT
 JW1163_STAMPING: A 168 1983
 JW1163_MARK LOGO: NGS
 JW1163_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1163_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1163+SATELLITE: SATELLITE OBSERVATIONS - September 22, 2007
 JW1163
 JW1163  HISTORY     - Date     Condition        Report By
 JW1163  HISTORY     - 1983     MONUMENTED       NGS
 JW1163  HISTORY     - 20070922 GOOD             GEOCAC
 JW1163
 JW1163                          STATION DESCRIPTION
 JW1163
 JW1163'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1163'8.7 KM (5.4 MI) SE FROM WESTERNPORT.
 JW1163'8.6 KM (5.35 MI) SOUTHEAST ALONG STATE HIGHWAY 135 FROM THE JUNCTION
 JW1163'OF STATE HIGHWAY 36 IN WESTERNPORT, THENCE 0.1 KM (0.05 MI) SOUTHWEST
 JW1163'ALONG U.S. HIGHWAY 220 TO THE MARK ON THE RIGHT, IN TOP OF THE
 JW1163'NORTHWEST END OF THE NORTHEAST ABUTMENT OF THE HIGHWAY BRIDGE OVER THE
 JW1163'POTOMAC RIVER, ALSO 22.9 KM (14.2 MI) SOUTHWEST ALONG U.S. HIGHWAY 220
 JW1163'FROM THE CALVARY BAPTIST CHURCH IN CRESAPTOWN, 5.94 METERS (19.5 FT)
 JW1163'NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 1.40 METERS (4.6 FT)
 JW1163'SOUTHWEST OF THE NORTHEAST END OF THE NORTHWEST CONCRETE GUARDRAIL OF
 JW1163'THE BRIDGE.
 JW1163'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JW1163
 JW1163                          STATION RECOVERY (2007)
 JW1163
 JW1163'RECOVERY NOTE BY GEOCACHING 2007 (BP)
 JW1163'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1187 ***********************************************************************
 JW1187  DESIGNATION -  A 169
 JW1187  PID         -  JW1187
 JW1187  STATE/COUNTY-  MD/ALLEGANY
 JW1187  COUNTRY     -  US
 JW1187  USGS QUAD   -  FLINTSTONE (2016)
 JW1187
 JW1187                         *CURRENT SURVEY CONTROL
 JW1187  ______________________________________________________________________
 JW1187* NAD 83(1986) POSITION- 39 42 17.     (N) 078 33 59.     (W)   SCALED
 JW1187* NAVD 88 ORTHO HEIGHT -   253.218 (meters)      830.77  (feet) ADJUSTED
 JW1187  ______________________________________________________________________
 JW1187  GEOID HEIGHT    -        -33.060 (meters)                     GEOID18
 JW1187  DYNAMIC HEIGHT  -        253.072 (meters)      830.29  (feet) COMP
 JW1187  MODELED GRAVITY -    980,042.1   (mgal)                       NAVD 88
 JW1187
 JW1187  VERT ORDER      -  FIRST     CLASS II
 JW1187
 JW1187.The horizontal coordinates were scaled from a map and have
 JW1187.an estimated accuracy of +/- 6 seconds.
 JW1187
 JW1187.The orthometric height was determined by differential leveling and
 JW1187.adjusted by the NATIONAL GEODETIC SURVEY
 JW1187.in June 1991.
 JW1187
 JW1187.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1187.GEOID18 height accuracy estimate available here.
 JW1187
 JW1187.Click photographs - Photos may exist for this station.
 JW1187
 JW1187.The dynamic height is computed by dividing the NAVD 88
 JW1187.geopotential number by the normal gravity value computed on the
 JW1187.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1187.degrees latitude (g = 980.6199 gals.).
 JW1187
 JW1187.The modeled gravity was interpolated from observed gravity values.
 JW1187
 JW1187;                    North         East    Units  Estimated Accuracy
 JW1187;SPC MD       -   227,400.      265,670.      MT  (+/- 180 meters Scaled)
 JW1187
 JW1187_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD086978(NAD 83)
 JW1187
 JW1187                          SUPERSEDED SURVEY CONTROL
 JW1187
 JW1187.No superseded survey control is available for this station.
 JW1187
 JW1187_MARKER: DV = VERTICAL CONTROL DISK
 JW1187_SETTING: 66 = SET IN ROCK OUTCROP
 JW1187_STAMPING: A 169 1983
 JW1187_MARK LOGO: NGS
 JW1187_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1187_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1187+STABILITY: POSITION/ELEVATION WELL
 JW1187_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW1187+SATELLITE: SATELLITE OBSERVATIONS - November 05, 1992
 JW1187
 JW1187  HISTORY     - Date     Condition        Report By
 JW1187  HISTORY     - 1983     MONUMENTED       NGS
 JW1187  HISTORY     - 19921105 GOOD             MDSHA
 JW1187
 JW1187                          STATION DESCRIPTION
 JW1187
 JW1187'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1187'IN FLINTSTONE.
 JW1187'THE MARK IS 0.30 M ABOVE HIGHWAY.
 JW1187'IN FLINTSTONE, IN BEDROCK, AT THE SOUTH SIDE OF THE EAST END OF THE
 JW1187'U.S. HIGHWAY 40 BRIDGE OVER FLINTSTONE CREEK, 7.01 METERS (23.0 FT)
 JW1187'SOUTH OF THE SOUTH FACE OF THE SOUTH CONCRETE RETAINING WALL OF THE
 JW1187'BRIDGE, 10.05 METERS (33.0 FT) SOUTHWEST OF THE EAST END OF THE
 JW1187'BRIDGE.
 JW1187'THE MARK IS 0.61 METERS  N FROM A WITNESS POST.
 JW1187
 JW1187                          STATION RECOVERY (1992)
 JW1187
 JW1187'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1187'THE POINT WAS RECOVERED AND FOUND IN GOOD CONDITION.  DUE TO CHANGES
 JW1187'IN THE AREA AND THE CONSTRUCTION OF INTERSTATE HIGHWAY 68, A COMPLETE
 JW1187'NEW DESCRIPTION IS REQUIRED.  THE MARKER IS LOCATED ABOUT 0.2 MI (0.3
 JW1187'KM) NORTHWEST OF FLINTSTONE, 3.4 MI (5.5 KM) WEST-NORTHWEST OF PRATT
 JW1187'AND 11.3 MI (18.2 KM) EAST-NORTHEAST OF CUMBERLAND.  IT IS ON THE
 JW1187'ROAD RIGHT-OF-WAY PROPERTY.  TO REACH FROM THE POST OFFICE AT
 JW1187'FLINTSTONE GO WEST ON MARYLAND STATE ROUTE 144 FOR 100.0 FT (30.5 M)
 JW1187'TO THE ENTRANCE TO THE ACCESS RAMP TO INTERSTATE HIGHWAY 68
 JW1187'EASTBOUND.  TURN RIGHT AND GO EASTERLY ON INTERSTATE HIGHWAY 68 FOR
 JW1187'0.35 MI (0.56 KM) TO THE MARKER ON THE LEFT UNDER THE INTERSTATE
 JW1187'HIGHWAY 68 WESTBOUND LANE BRIDGE THAT PASSES OVER FLINTSTONE CREEK.
 JW1187'THE POINT IS MARKED WITH A STANDARD NATIONAL GEODETIC SURVEY VERTICAL
 JW1187'CONTROL DISK CEMENTED IN A DRILL HOLE IN BEDROCK, AT THE SOUTH SIDE
 JW1187'OF THE EAST END OF THE OLD U.S. HIGHWAY 40 BRIDGE OVER FLINTSTONE
 JW1187'CREEK (NOTE,THE OLD U.S. HIGHWAY 40 BRIDGE HAS BEEN PARTIALLY
 JW1187'DEMOLISHED.  THE BRIDGE DECK AND STEEL GIRDERS HAVE BEEN REMOVED BUT
 JW1187'THE BRIDGE PIERS AND ABUTMENTS REMAIN) AND UNDERNEATH AND NORTHWEST
 JW1187'OF THE MOST EASTERLY ABUTMENT WALL FOR A BRIDGE NUMBERED 1077 WHERE
 JW1187'THE WESTBOUND LANE OF INTERSTATE HIGHWAY 68 PASSES OVER FLINTSTONE
 JW1187'CREEK AND DOLLY ROAD.  IT IS 22.5 FT (6.9 M) NORTHWEST OF THE WESTERN
 JW1187'FACE OF THE MOST EASTERLY ABUTMENT WALL FOR THE INTERSTATE HIGHWAY 68
 JW1187'WESTBOUND LANE BRIDGE OVER FLINTSTONE CREEK, 27.0 FT (8.2 M)
 JW1187'SOUTHWEST OF THE SOUTH END OF THE MOST EASTERLY BRIDGE ABUTMENT FOR
 JW1187'THE OLD U.S. HIGHWAY 40 BRIDGE OVER FINTSTONE CREEK AND ABOUT 22.0
 JW1187'FT (6.7 M) LOWER THAN THE SURFACE OF THE INTERSTATE HIGHWAY 68.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1673 ***********************************************************************
 JW1673  DESIGNATION -  A 169 RESET
 JW1673  PID         -  JW1673
 JW1673  STATE/COUNTY-  MD/ALLEGANY
 JW1673  COUNTRY     -  US
 JW1673  USGS QUAD   -  FLINTSTONE (2016)
 JW1673
 JW1673                         *CURRENT SURVEY CONTROL
 JW1673  ______________________________________________________________________
 JW1673* NAD 83(1986) POSITION- 39 42 16.53   (N) 078 33 59.06   (W)   HD_HELD1
 JW1673* NAVD 88 ORTHO HEIGHT -   260.617 (meters)      855.04  (feet) ADJUSTED
 JW1673  ______________________________________________________________________
 JW1673  GEOID HEIGHT    -        -33.061 (meters)                     GEOID18
 JW1673  DYNAMIC HEIGHT  -        260.466 (meters)      854.55  (feet) COMP
 JW1673  MODELED GRAVITY -    980,042.2   (mgal)                       NAVD 88
 JW1673
 JW1673  VERT ORDER      -  SECOND    CLASS I
 JW1673
 JW1673.The horizontal coordinates were determined by differentially corrected
 JW1673.hand held GPS observations or other comparable positioning techniques
 JW1673.and have an estimated accuracy of +/- 3 meters.
 JW1673
 JW1673.The orthometric height was determined by differential leveling and
 JW1673.adjusted by the NATIONAL GEODETIC SURVEY
 JW1673.in April 1995.
 JW1673
 JW1673.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1673.GEOID18 height accuracy estimate available here.
 JW1673
 JW1673.Click photographs - Photos may exist for this station.
 JW1673
 JW1673.The dynamic height is computed by dividing the NAVD 88
 JW1673.geopotential number by the normal gravity value computed on the
 JW1673.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1673.degrees latitude (g = 980.6199 gals.).
 JW1673
 JW1673.The modeled gravity was interpolated from observed gravity values.
 JW1673
 JW1673;                    North         East    Units  Estimated Accuracy
 JW1673;SPC MD       -   227,383.4     265,663.2     MT  (+/- 3 meters HH1 GPS) 
 JW1673
 JW1673_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD0863497802(NAD 83)
 JW1673
 JW1673                          SUPERSEDED SURVEY CONTROL
 JW1673
 JW1673.No superseded survey control is available for this station.
 JW1673
 JW1673_MARKER: DV = VERTICAL CONTROL DISK
 JW1673_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW1673_SP_SET: BRIDGE PARAPET WALL
 JW1673_STAMPING: A 169 RESET 1989
 JW1673_MARK LOGO: NGS
 JW1673_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1673_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1673_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1673+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2016
 JW1673
 JW1673  HISTORY     - Date     Condition        Report By
 JW1673  HISTORY     - 1989     MONUMENTED       NGS
 JW1673  HISTORY     - 19921105 GOOD             MDSHA
 JW1673  HISTORY     - 20160217 GOOD             BASE9
 JW1673
 JW1673                          STATION DESCRIPTION
 JW1673
 JW1673'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1673'THE MARKER IS LOCATED ABOUT 0.2 MI (0.3 KM) NORTHWEST OF FLINTSTONE,
 JW1673'3.4 MI (5.5 KM) WEST-NORTHWEST OF PRATT AND 11.3 MI (18.2 KM)
 JW1673'EAST-NORTHEAST OF CUMBERLAND.  IT IS ON THE ROAD RIGHT-OF-WAY
 JW1673'PROPERTY.  TO REACH FROM THE POST OFFICE AT FLINTSTONE, GO WEST ON
 JW1673'MARYLAND ROUTE 144 FOR 100.0 FT (30.5 M) TO THE ENTRANCE FOR THE
 JW1673'ACCESS RAMP TO INTERSTATE HIGHWAY 68 EASTBOUND.  TURN RIGHT AND GO
 JW1673'EASTERLY ON INTERSTATE HIGHWAY 68 FOR 0.35 MI (0.56 KM) TO THE MARKER
 JW1673'ON THE LEFT IN THE TOP OF THE PARAPET WALL.  THE POINT IS MARKED WITH
 JW1673'A STANDARD NATIONAL GEODETIC SURVEY VERTICAL CONTROL DISK, CEMENTED
 JW1673'IN A DRILL HOLE IN THE TOP OF THE NORTHEAST END OF THE NORTH PARAPET
 JW1673'WALL WHICH IS PART OF THE MOST EASTERLY ABUTMENT FOR A BRIDGE
 JW1673'NUMBERED 1077 WHERE THE EASTBOUND LANE OF INTERSTATE HIGHWAY 68
 JW1673'PASSES OVER FLINTSTONE CREEK AND DOLLY ROAD.  IT IS 5.0 FT (1.5 M)
 JW1673'NORTHEAST OF THE NORTH EDGE OF THE EASTBOUND LANES OF INTERSTATE
 JW1673'HIGHWAY 68, 7.3 FT (2.2 M) WEST OF THE NORTHEAST END OF THE NORTH
 JW1673'BRIDGE PARAPET WALL AND ABOUT 3.0 FT (0.9 M) HIGHER THAN THE SURFACE
 JW1673'OF THE ROAD.
 JW1673
 JW1673                          STATION RECOVERY (2016)
 JW1673
 JW1673'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 JW1673'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0686 ***********************************************************************
 JW0686  DESIGNATION -  A 17
 JW0686  PID         -  JW0686
 JW0686  STATE/COUNTY-  MD/GARRETT
 JW0686  COUNTRY     -  US
 JW0686  USGS QUAD   -  OAKLAND (2016)
 JW0686
 JW0686                         *CURRENT SURVEY CONTROL
 JW0686  ______________________________________________________________________
 JW0686* NAD 83(1986) POSITION- 39 24 47.40   (N) 079 24 12.18   (W)   HD_HELD1
 JW0686* NAVD 88 ORTHO HEIGHT -   735.553 (meters)     2413.23  (feet) ADJUSTED
 JW0686  ______________________________________________________________________
 JW0686  GEOID HEIGHT    -        -31.147 (meters)                     GEOID18
 JW0686  DYNAMIC HEIGHT  -        735.055 (meters)     2411.59  (feet) COMP
 JW0686  MODELED GRAVITY -    979,925.3   (mgal)                       NAVD 88
 JW0686
 JW0686  VERT ORDER      -  SECOND    CLASS 0
 JW0686
 JW0686.The horizontal coordinates were determined by differentially corrected
 JW0686.hand held GPS observations or other comparable positioning techniques
 JW0686.and have an estimated accuracy of +/- 3 meters.
 JW0686
 JW0686.The orthometric height was determined by differential leveling and
 JW0686.adjusted by the NATIONAL GEODETIC SURVEY
 JW0686.in June 1991.
 JW0686
 JW0686.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0686.GEOID18 height accuracy estimate available here.
 JW0686
 JW0686.Click photographs - Photos may exist for this station.
 JW0686
 JW0686.The dynamic height is computed by dividing the NAVD 88
 JW0686.geopotential number by the normal gravity value computed on the
 JW0686.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0686.degrees latitude (g = 980.6199 gals.).
 JW0686
 JW0686.The modeled gravity was interpolated from observed gravity values.
 JW0686
 JW0686;                    North         East    Units  Estimated Accuracy
 JW0686;SPC MD       -   196,598.7     193,045.0     MT  (+/- 3 meters HH1 GPS) 
 JW0686
 JW0686_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3744963843(NAD 83)
 JW0686
 JW0686                          SUPERSEDED SURVEY CONTROL
 JW0686
 JW0686  NGVD 29 (??/??/92)  735.692  (m)         2413.68   (f) ADJ UNCH    2 0
 JW0686
 JW0686.Superseded values are not recommended for survey control.
 JW0686
 JW0686.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0686.See file dsdata.pdf to determine how the superseded data were derived.
 JW0686
 JW0686_MARKER: DB = BENCH MARK DISK
 JW0686_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0686_STAMPING: A 17 1935
 JW0686_MARK LOGO: CGS
 JW0686_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0686+STABILITY: SURFACE MOTION
 JW0686
 JW0686  HISTORY     - Date     Condition        Report By
 JW0686  HISTORY     - 1935     MONUMENTED       CGS
 JW0686
 JW0686                          STATION DESCRIPTION
 JW0686
 JW0686'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0686'AT OAKLAND.
 JW0686'AT OAKLAND, GARRETT COUNTY, ON U.S. HIGHWAY 219, 0.5 MILE NORTH
 JW0686'OF THE COUNTY COURTHOUSE, 65 FEET SOUTHEAST OF THE SOUTHEAST
 JW0686'CORNER OF A GARAGE AND SERVICE STATION ON OPPOSITE SIDES OF THE
 JW0686'HIGHWAY, ON THE INSIDE OF A CURVE, AND 18 FEET SOUTH OF THE CENTER
 JW0686'LINE OF THE HIGHWAY.  A STANDARD DISK, STAMPED A 17 1935 AND SET
 JW0686'IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0687 ***********************************************************************
 JW0687  DESIGNATION -  A 17 RESET
 JW0687  PID         -  JW0687
 JW0687  STATE/COUNTY-  MD/GARRETT
 JW0687  COUNTRY     -  US
 JW0687  USGS QUAD   -  OAKLAND (2016)
 JW0687
 JW0687                         *CURRENT SURVEY CONTROL
 JW0687  ______________________________________________________________________
 JW0687* NAD 83(1986) POSITION- 39 24 48.     (N) 079 24 12.     (W)   SCALED
 JW0687* NAVD 88 ORTHO HEIGHT -   735.613 (meters)     2413.42  (feet) ADJUSTED
 JW0687  ______________________________________________________________________
 JW0687  GEOID HEIGHT    -        -31.147 (meters)                     GEOID18
 JW0687  DYNAMIC HEIGHT  -        735.115 (meters)     2411.79  (feet) COMP
 JW0687  MODELED GRAVITY -    979,925.3   (mgal)                       NAVD 88
 JW0687
 JW0687  VERT ORDER      -  FIRST     CLASS II
 JW0687
 JW0687.The horizontal coordinates were scaled from a map and have
 JW0687.an estimated accuracy of +/- 6 seconds.
 JW0687
 JW0687.The orthometric height was determined by differential leveling and
 JW0687.adjusted by the NATIONAL GEODETIC SURVEY
 JW0687.in June 1991.
 JW0687
 JW0687.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0687.GEOID18 height accuracy estimate available here.
 JW0687
 JW0687.Click photographs - Photos may exist for this station.
 JW0687
 JW0687.The dynamic height is computed by dividing the NAVD 88
 JW0687.geopotential number by the normal gravity value computed on the
 JW0687.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0687.degrees latitude (g = 980.6199 gals.).
 JW0687
 JW0687.The modeled gravity was interpolated from observed gravity values.
 JW0687
 JW0687;                    North         East    Units  Estimated Accuracy
 JW0687;SPC MD       -   196,620.      193,050.      MT  (+/- 180 meters Scaled)
 JW0687
 JW0687_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD374638(NAD 83)
 JW0687
 JW0687                          SUPERSEDED SURVEY CONTROL
 JW0687
 JW0687.No superseded survey control is available for this station.
 JW0687
 JW0687_MARKER: DB = BENCH MARK DISK
 JW0687_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0687_STAMPING: A 17 RESET 1968
 JW0687_MARK LOGO: CGS
 JW0687_PROJECTION: FLUSH
 JW0687_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW0687_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0687+STABILITY: SURFACE MOTION
 JW0687_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0687+SATELLITE: SATELLITE OBSERVATIONS - October 02, 1990
 JW0687
 JW0687  HISTORY     - Date     Condition        Report By
 JW0687  HISTORY     - 1968     MONUMENTED       MDDT
 JW0687  HISTORY     - 1983     GOOD             NGS
 JW0687  HISTORY     - 19901002 GOOD             NGS
 JW0687  HISTORY     - 19910827 GOOD             MDSHA
 JW0687
 JW0687                          STATION DESCRIPTION
 JW0687
 JW0687'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1968
 JW0687'AT OAKLAND.
 JW0687'AT OAKLAND, 0.5 MILE NORTH ALONG U.S. HIGHWAY 219 FROM THE COUNTY
 JW0687'COURTHOUSE AT OAKLAND, 188 FEET EAST OF THE CENTER LINE OF U.S.
 JW0687'HIGHWAY 219, 20 FEET SOUTH OF THE CENTER LINE OF OLD DEER PARK
 JW0687'ROAD, 13.5 FEET NORTH OF THE NORTHWEST CORNER OF A STORAGE SHED,
 JW0687'3 FEET SOUTH OF A C. AND P. POWER LINE POLE 2, SET IN THE TOP
 JW0687'OF A CONCRETE POST 2 INCHES BELOW THE SURFACE OF THE GROUND.
 JW0687
 JW0687                          STATION RECOVERY (1983)
 JW0687
 JW0687'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0687'THE MARK IS 0.18 M ABOVE MEMORIAL DRIVE.
 JW0687'RECOVERED IN GOOD CONDITION, NEW DESCRIPTION FOLLOWS.  IN OAKLAND, ON
 JW0687'THE SOUTHWEST SIDE OF EAST MEMORIAL DRIVE AND NEAR THE JUNCTION OF
 JW0687'U.S. HIGHWAY 219 (THIRD STREET) ON THE SOUTHWEST SIDE OF POWER POLE 2,
 JW0687'58.0 METERS (190.0 FT) SOUTHEAST OF THE CENTERLINE OF THE HIGHWAY,
 JW0687'4.02 METERS (13.2 FT) EAST-NORTHEAST OF THE NORTH CORNER OF A STORAGE
 JW0687'SHED, 1.70 METERS (5.6 FT) SOUTHWEST OF THE SOUTHWEST CURB OF EAST
 JW0687'MEMORIAL DRIVE, 1.10 METERS (3.6 FT) SOUTHWEST OF THE POWER POLE.
 JW0687
 JW0687                          STATION RECOVERY (1990)
 JW0687
 JW0687'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW0687'IN OAKLAND, AT THE INTERSECTION OF NORTH THIRD STREET (U.S. HIGHWAY
 JW0687'219) AND EAST MEMORIAL DRIVE, 57.4 M (188.3 FT) SOUTHEAST OF THE
 JW0687'STREET CENTERLINE, 7.0 M (23.0 FT) SOUTH-SOUTHWEST OF AND LEVEL WITH
 JW0687'THE DRIVE CENTER, 1.0 M (3.3 FT) SOUTH-SOUTHWEST OF A UTILITY POLE,
 JW0687'0.8 M (2.6 FT) NORTH-NORTHEAST OF A WITNESS POST, AND THE MONUMENT IS
 JW0687'0.1 M (0.3 FT) BELOW THE GROUND SURFACE.
 JW0687
 JW0687                          STATION RECOVERY (1991)
 JW0687
 JW0687'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW0687'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8270 ***********************************************************************
 HV8270  DESIGNATION -  A 170
 HV8270  PID         -  HV8270
 HV8270  STATE/COUNTY-  MD/DORCHESTER
 HV8270  COUNTRY     -  US
 HV8270  USGS QUAD   -  CAMBRIDGE (2016)
 HV8270
 HV8270                         *CURRENT SURVEY CONTROL
 HV8270  ______________________________________________________________________
 HV8270* NAD 83(1986) POSITION- 38 34 17.6    (N) 076 03 47.3    (W)   HD_HELD2
 HV8270* NAVD 88 ORTHO HEIGHT -     5.624 (meters)       18.45  (feet) ADJUSTED
 HV8270  ______________________________________________________________________
 HV8270  GEOID HEIGHT    -        -35.054 (meters)                     GEOID18
 HV8270  DYNAMIC HEIGHT  -          5.621 (meters)       18.44  (feet) COMP
 HV8270  MODELED GRAVITY -    980,017.7   (mgal)                       NAVD 88
 HV8270
 HV8270  VERT ORDER      -  SECOND    CLASS I
 HV8270
 HV8270.The horizontal coordinates were established by autonomous hand held GPS
 HV8270.observations and have an estimated accuracy of +/- 10 meters.
 HV8270
 HV8270.The orthometric height was determined by differential leveling and
 HV8270.adjusted by the NATIONAL GEODETIC SURVEY
 HV8270.in October 1997.
 HV8270
 HV8270.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8270.GEOID18 height accuracy estimate available here.
 HV8270
 HV8270.Click photographs - Photos may exist for this station.
 HV8270
 HV8270.The dynamic height is computed by dividing the NAVD 88
 HV8270.geopotential number by the normal gravity value computed on the
 HV8270.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8270.degrees latitude (g = 980.6199 gals.).
 HV8270
 HV8270.The modeled gravity was interpolated from observed gravity values.
 HV8270
 HV8270;                    North         East    Units  Estimated Accuracy
 HV8270;SPC MD       -   100,865.      481,640.      MT  (+/- 10 meters HH2 GPS)
 HV8270
 HV8270_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0738769769(NAD 83)
 HV8270
 HV8270                          SUPERSEDED SURVEY CONTROL
 HV8270
 HV8270  NGVD 29               5.86   (m)           19.2    (f) LEVELING    3  
 HV8270
 HV8270.Superseded values are not recommended for survey control.
 HV8270
 HV8270.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8270.See file dsdata.pdf to determine how the superseded data were derived.
 HV8270
 HV8270_MARKER: DV = VERTICAL CONTROL DISK
 HV8270_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 HV8270_SP_SET: BRIDGE RETAINING WALL
 HV8270_STAMPING: A 170 1986
 HV8270_MARK LOGO: NGS
 HV8270_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8270_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8270_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8270+SATELLITE: SATELLITE OBSERVATIONS - July 22, 2008
 HV8270
 HV8270  HISTORY     - Date     Condition        Report By
 HV8270  HISTORY     - 1986     MONUMENTED       NGS
 HV8270  HISTORY     - 19870101 GOOD             MDDT
 HV8270  HISTORY     - 20051107 GOOD             USPSQD
 HV8270  HISTORY     - 20061118 GOOD             USPSQD
 HV8270  HISTORY     - 20080722 GOOD             NGS
 HV8270
 HV8270                          STATION DESCRIPTION
 HV8270
 HV8270'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1987 (RGP)
 HV8270'AT THE SOUTH END OF THE NEW CHOPTANK RIVER BRIDGE IN THE WEST CONCRETE
 HV8270'BARRIER WALL, 3.2 M (10.5 FT) NNE FROM THE SOUTH END OF THE BARRIER,
 HV8270'12.3 M (40.4 FT) SSW FROM A LAMP POST, 0.2 M (0.7 FT) ESE FROM THE
 HV8270'WEST EDGE OF THE BARRIER, AND 21.3 M (69.9 FT) NW FROM THE EAST
 HV8270'CONCRETE BARRIER WHERE THE BRIDGE DATE IS SET.
 HV8270
 HV8270                          STATION RECOVERY (2005)
 HV8270
 HV8270'RECOVERY NOTE BY US POWER SQUADRON 2005 (LGD)
 HV8270'RECOVERED IN GOOD CONDITION.
 HV8270
 HV8270                          STATION RECOVERY (2006)
 HV8270
 HV8270'RECOVERY NOTE BY US POWER SQUADRON 2006
 HV8270'RECOVERED IN GOOD CONDITION.
 HV8270
 HV8270                          STATION RECOVERY (2008)
 HV8270
 HV8270'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 HV8270'MARK HAS BEEN PAINTED OVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2132 ***********************************************************************
 HU2132  DESIGNATION -  A 171
 HU2132  PID         -  HU2132
 HU2132  STATE/COUNTY-  MD/WICOMICO
 HU2132  COUNTRY     -  US
 HU2132  USGS QUAD   -  SHARPTOWN (2016)
 HU2132
 HU2132                         *CURRENT SURVEY CONTROL
 HU2132  ______________________________________________________________________
 HU2132* NAD 83(1986) POSITION- 38 31 59.5    (N) 075 43 42.5    (W)   HD_HELD2
 HU2132* NAVD 88 ORTHO HEIGHT -     2.500 (meters)        8.20  (feet) ADJUSTED
 HU2132  ______________________________________________________________________
 HU2132  GEOID HEIGHT    -        -35.557 (meters)                     GEOID18
 HU2132  DYNAMIC HEIGHT  -          2.498 (meters)        8.20  (feet) COMP
 HU2132  MODELED GRAVITY -    980,012.4   (mgal)                       NAVD 88
 HU2132
 HU2132  VERT ORDER      -  SECOND    CLASS I
 HU2132
 HU2132.The horizontal coordinates were established by autonomous hand held GPS
 HU2132.observations and have an estimated accuracy of +/- 10 meters.
 HU2132
 HU2132.The orthometric height was determined by differential leveling and
 HU2132.adjusted by the NATIONAL GEODETIC SURVEY
 HU2132.in June 1991.
 HU2132
 HU2132.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2132.GEOID18 height accuracy estimate available here.
 HU2132
 HU2132.Click photographs - Photos may exist for this station.
 HU2132
 HU2132.The dynamic height is computed by dividing the NAVD 88
 HU2132.geopotential number by the normal gravity value computed on the
 HU2132.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2132.degrees latitude (g = 980.6199 gals.).
 HU2132
 HU2132.The modeled gravity was interpolated from observed gravity values.
 HU2132
 HU2132;                    North         East    Units  Estimated Accuracy
 HU2132;SPC MD       -    96,960.      510,861.      MT  (+/- 10 meters HH2 GPS)
 HU2132
 HU2132_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3650765228(NAD 83)
 HU2132
 HU2132                          SUPERSEDED SURVEY CONTROL
 HU2132
 HU2132  NGVD 29 (06/12/91)    2.746  (m)            9.01   (f) ADJUSTED    2 1
 HU2132
 HU2132.Superseded values are not recommended for survey control.
 HU2132
 HU2132.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2132.See file dsdata.pdf to determine how the superseded data were derived.
 HU2132
 HU2132_MARKER: DV = VERTICAL CONTROL DISK
 HU2132_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2132_STAMPING: A 171 1989
 HU2132_MARK LOGO: NGS
 HU2132_PROJECTION: RECESSED 5 CENTIMETERS
 HU2132_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2132_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2132+STABILITY: SURFACE MOTION
 HU2132_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2132+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2017
 HU2132
 HU2132  HISTORY     - Date     Condition        Report By
 HU2132  HISTORY     - 1989     MONUMENTED       MDSHA
 HU2132  HISTORY     - 19900306 GOOD             NGS
 HU2132  HISTORY     - 20170606 GOOD             ARCSHE
 HU2132
 HU2132                          STATION DESCRIPTION
 HU2132
 HU2132'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2132'1.1 KM (0.68 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 313 FROM THE
 HU2132'JUNCTION OF STATE HIGHWAY 348 IN SHARPTOWN, 24.1 M (79.07 FT) WEST OF
 HU2132'THE SOUTHEAST END OF A PIPE CULVERT, 7.0 M (22.97 FT) SOUTH OF THE
 HU2132'CENTER OF A PAVED ROAD (OLD STATE HIGHWAY 313), 0.8 M (2.62 FT) WEST
 HU2132'OF A WITNESS POST, 0.4 M (1.31 FT) BELOW THE LEVEL OF THE HIGHWAY,
 HU2132'AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2132
 HU2132                          STATION RECOVERY (2017)
 HU2132
 HU2132'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2132'THE MARK IS 144 FT (43.9 M) WEST-SOUTHWEST ACROSS THE OLD HIGHWAY FROM
 HU2132'A SIGN INDICATING A LEFT CURVE FOR WEST-BOUND TRAFFIC, 100 FT (30.5 M)
 HU2132'EAST OF THE V-POINT OF THE SHOULDER JUNCTION OF THE OLD AND NEW
 HU2132'HIGHWAYS, 75 FT (22.9 M) WEST OF THE SOUTH END OF THE WESTERLY PIPE OF
 HU2132'A DOUBLE CULVERT WITH NO HEADWALL UNDER THE OLD HIGHWAY, 72 FT (21.9
 HU2132'M) SOUTHEAST ACROSS THE OLD HIGHWAY FROM A YIELD SIGN, 70 FT (21.3 M)
 HU2132'SOUTH-SOUTHEAST FROM POLE 119 ON THE EAST SIDE OF A TELEPHONE BOX, 60
 HU2132'FT (18.3 M) EAST OF A YIELD SIGN AT THE V-POINT OF THE INTERSECTION,
 HU2132'31 FT (9.4 M) NORTH OF THE NEW HIGHWAY AND 20 FT (6.1 M) SOUTH OF THE
 HU2132'OLD HIGHWAY EXTENDED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6165 ***********************************************************************
 JV6165  DESIGNATION -  A 172
 JV6165  PID         -  JV6165
 JV6165  STATE/COUNTY-  MD/HARFORD
 JV6165  COUNTRY     -  US
 JV6165  USGS QUAD   -  WHITE MARSH (2016)
 JV6165
 JV6165                         *CURRENT SURVEY CONTROL
 JV6165  ______________________________________________________________________
 JV6165* NAD 83(1986) POSITION- 39 28 46.     (N) 076 23 06.     (W)   SCALED
 JV6165* NAVD 88 ORTHO HEIGHT -   108.523 (meters)      356.05  (feet) ADJUSTED
 JV6165  ______________________________________________________________________
 JV6165  GEOID HEIGHT    -        -32.839 (meters)                     GEOID18
 JV6165  DYNAMIC HEIGHT  -        108.466 (meters)      355.86  (feet) COMP
 JV6165  MODELED GRAVITY -    980,101.2   (mgal)                       NAVD 88
 JV6165
 JV6165  VERT ORDER      -  FIRST     CLASS II
 JV6165
 JV6165.The horizontal coordinates were scaled from a map and have
 JV6165.an estimated accuracy of +/- 6 seconds.
 JV6165
 JV6165.The orthometric height was determined by differential leveling and
 JV6165.adjusted by the NATIONAL GEODETIC SURVEY
 JV6165.in June 1991.
 JV6165
 JV6165.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6165.GEOID18 height accuracy estimate available here.
 JV6165
 JV6165.Click photographs - Photos may exist for this station.
 JV6165
 JV6165.The dynamic height is computed by dividing the NAVD 88
 JV6165.geopotential number by the normal gravity value computed on the
 JV6165.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6165.degrees latitude (g = 980.6199 gals.).
 JV6165
 JV6165.The modeled gravity was interpolated from observed gravity values.
 JV6165
 JV6165;                    North         East    Units  Estimated Accuracy
 JV6165;SPC MD       -   201,410.      452,910.      MT  (+/- 180 meters Scaled)
 JV6165
 JV6165_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ808708(NAD 83)
 JV6165
 JV6165                          SUPERSEDED SURVEY CONTROL
 JV6165
 JV6165.No superseded survey control is available for this station.
 JV6165
 JV6165_MARKER: I = METAL ROD
 JV6165_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 JV6165+WITH SETTING: INFORMATION.
 JV6165_STAMPING: A 172 1989
 JV6165_MARK LOGO: NGS
 JV6165_PROJECTION: FLUSH
 JV6165_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6165_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6165_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6165+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6165_ROD/PIPE-DEPTH: 2.1 meters
 JV6165
 JV6165  HISTORY     - Date     Condition        Report By
 JV6165  HISTORY     - 1989     MONUMENTED       NGS
 JV6165
 JV6165                          STATION DESCRIPTION
 JV6165
 JV6165'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6165'1.6 KM (1.00 MI) SOUTHEASTERLY ALONG STATE HIGHWAY 152 FROM ITS
 JV6165'JUNCTION WITH U.S. HIGHWAY 1 IN LYNCHS CORNER, 20.9 M (68.6 FT)
 JV6165'SOUTHEAST OF THE CENTERLINE OF OLD MOUNTAIN ROAD NORTH, 15.1 M (49.5
 JV6165'FT) SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 0.9 M (3.0 FT)
 JV6165'SOUTHEAST OF UTILITY POLE NUMBER 330113 WITH A GUY WIRE, 0.9 M (3.0
 JV6165'FT) ABOVE THE LEVEL OF THE HIGHWAY, AND 0.3 M (1.0 FT) NORTHEAST OF A
 JV6165'WITNESS POST.  NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH
 JV6165'LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6197 ***********************************************************************
 JV6197  DESIGNATION -  A 173
 JV6197  PID         -  JV6197
 JV6197  STATE/COUNTY-  MD/HARFORD
 JV6197  COUNTRY     -  US
 JV6197  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6197
 JV6197                         *CURRENT SURVEY CONTROL
 JV6197  ______________________________________________________________________
 JV6197* NAD 83(1986) POSITION- 39 34 12.     (N) 076 22 49.     (W)   SCALED
 JV6197* NAVD 88 ORTHO HEIGHT -   147.284 (meters)      483.21  (feet) ADJUSTED
 JV6197  ______________________________________________________________________
 JV6197  GEOID HEIGHT    -        -32.672 (meters)                     GEOID18
 JV6197  DYNAMIC HEIGHT  -        147.210 (meters)      482.97  (feet) COMP
 JV6197  MODELED GRAVITY -    980,117.5   (mgal)                       NAVD 88
 JV6197
 JV6197  VERT ORDER      -  FIRST     CLASS II
 JV6197
 JV6197.The horizontal coordinates were scaled from a map and have
 JV6197.an estimated accuracy of +/- 6 seconds.
 JV6197
 JV6197.The orthometric height was determined by differential leveling and
 JV6197.adjusted by the NATIONAL GEODETIC SURVEY
 JV6197.in June 1991.
 JV6197
 JV6197.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6197.GEOID18 height accuracy estimate available here.
 JV6197
 JV6197.Click photographs - Photos may exist for this station.
 JV6197
 JV6197.The dynamic height is computed by dividing the NAVD 88
 JV6197.geopotential number by the normal gravity value computed on the
 JV6197.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6197.degrees latitude (g = 980.6199 gals.).
 JV6197
 JV6197.The modeled gravity was interpolated from observed gravity values.
 JV6197
 JV6197;                    North         East    Units  Estimated Accuracy
 JV6197;SPC MD       -   211,470.      453,250.      MT  (+/- 180 meters Scaled)
 JV6197
 JV6197_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ814809(NAD 83)
 JV6197
 JV6197                          SUPERSEDED SURVEY CONTROL
 JV6197
 JV6197.No superseded survey control is available for this station.
 JV6197
 JV6197_MARKER: I = METAL ROD
 JV6197_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6197_STAMPING: A 173 1989
 JV6197_MARK LOGO: NGS
 JV6197_PROJECTION: RECESSED 10 CENTIMETERS
 JV6197_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6197_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6197_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6197+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6197_ROD/PIPE-DEPTH: 6.4 meters
 JV6197
 JV6197  HISTORY     - Date     Condition        Report By
 JV6197  HISTORY     - 1989     MONUMENTED       NGS
 JV6197
 JV6197                          STATION DESCRIPTION
 JV6197
 JV6197'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6197'0.9 KM (0.55 MI) SOUTHERLY ALONG STATE HIGHWAY 24 FROM THE JUNCTION
 JV6197'OF STATE HIGHWAY 23 IN FOREST HILL, 33.6 M (110.2 FT) SOUTHWEST OF
 JV6197'THE CENTERLINE OF THE HIGHWAY, 4.4 M (14.4 FT) NORTH OF THE CENTER OF
 JV6197'A DRIVEWAY LEADING TO THE HARFORD SOD COMPANY, 0.6 M (2.0 FT) NORTH
 JV6197'OF UTILITY POLE NUMBER 454242 WITH ONE GUY WIRE, 0.4 M (1.3 FT) NORTH
 JV6197'OF A WITNESS POST, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO THE
 JV6197'DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6183 ***********************************************************************
 JV6183  DESIGNATION -  A 174
 JV6183  PID         -  JV6183
 JV6183  STATE/COUNTY-  MD/HARFORD
 JV6183  COUNTRY     -  US
 JV6183  USGS QUAD   -  FAWN GROVE (2019)
 JV6183
 JV6183                         *CURRENT SURVEY CONTROL
 JV6183  ______________________________________________________________________
 JV6183* NAD 83(1986) POSITION- 39 41 57.5    (N) 076 28 22.9    (W)   HD_HELD2
 JV6183* NAVD 88 ORTHO HEIGHT -   162.999 (meters)      534.77  (feet) ADJUSTED
 JV6183  ______________________________________________________________________
 JV6183  GEOID HEIGHT    -        -32.563 (meters)                     GEOID18
 JV6183  DYNAMIC HEIGHT  -        162.917 (meters)      534.50  (feet) COMP
 JV6183  MODELED GRAVITY -    980,120.6   (mgal)                       NAVD 88
 JV6183
 JV6183  VERT ORDER      -  FIRST     CLASS II
 JV6183
 JV6183.The horizontal coordinates were established by autonomous hand held GPS
 JV6183.observations and have an estimated accuracy of +/- 10 meters.
 JV6183
 JV6183.The orthometric height was determined by differential leveling and
 JV6183.adjusted by the NATIONAL GEODETIC SURVEY
 JV6183.in June 1991.
 JV6183
 JV6183.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6183.GEOID18 height accuracy estimate available here.
 JV6183
 JV6183.Click photographs - Photos may exist for this station.
 JV6183
 JV6183.The dynamic height is computed by dividing the NAVD 88
 JV6183.geopotential number by the normal gravity value computed on the
 JV6183.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6183.degrees latitude (g = 980.6199 gals.).
 JV6183
 JV6183.The modeled gravity was interpolated from observed gravity values.
 JV6183
 JV6183;                    North         East    Units  Estimated Accuracy
 JV6183;SPC MD       -   225,774.      445,199.      MT  (+/- 10 meters HH2 GPS)
 JV6183
 JV6183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7371095421(NAD 83)
 JV6183
 JV6183                          SUPERSEDED SURVEY CONTROL
 JV6183
 JV6183.No superseded survey control is available for this station.
 JV6183
 JV6183_MARKER: I = METAL ROD
 JV6183_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6183_STAMPING: A 174 1989
 JV6183_MARK LOGO: NGS
 JV6183_PROJECTION: FLUSH
 JV6183_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6183_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6183_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6183+SATELLITE: SATELLITE OBSERVATIONS - November 03, 2004
 JV6183_ROD/PIPE-DEPTH: 4.3 meters
 JV6183
 JV6183  HISTORY     - Date     Condition        Report By
 JV6183  HISTORY     - 1989     MONUMENTED       NGS
 JV6183  HISTORY     - 20041103 GOOD             GEOCAC
 JV6183
 JV6183                          STATION DESCRIPTION
 JV6183
 JV6183'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6183'3.4 KM (2.10 MI) SOUTHERLY ALONG STATE HIGHWAY 124 AND STATE HIGHWAY
 JV6183'163 FROM THE JUNCTION OF STATE HIGHWAY 851 IN FAWN GROVE,
 JV6183'PENNSYLVANIA, THENCE 1.9 KM (1.20 MI) WESTERLY ALONG STATE HIGHWAY
 JV6183'136, 10.3 M (33.8 FT) EAST OF THE CENTER OF A DRIVEWAY, 5.4 M (17.7
 JV6183'FT) NORTH OF THE CENTERLINE OF THE HIGHWAY, 0.3 M (1.0 FT) SOUTH OF A
 JV6183'WITNESS POST, AND 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE HIGHWAY.
 JV6183'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6183
 JV6183                          STATION RECOVERY (2004)
 JV6183
 JV6183'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6183'THE PREVIOUSLY DESCRIBED DRIVEWAY LEADS TO 1934-1936 HARKINS ROAD
 JV6183'(MARYLAND HIGHWAY 136).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6248 ***********************************************************************
 JV6248  DESIGNATION -  A 175
 JV6248  PID         -  JV6248
 JV6248  STATE/COUNTY-  MD/HARFORD
 JV6248  COUNTRY     -  US
 JV6248  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV6248
 JV6248                         *CURRENT SURVEY CONTROL
 JV6248  ______________________________________________________________________
 JV6248* NAD 83(1986) POSITION- 39 32 52.3    (N) 076 05 32.9    (W)   HD_HELD2
 JV6248* NAVD 88 ORTHO HEIGHT -    14.051 (meters)       46.10  (feet) ADJUSTED
 JV6248  ______________________________________________________________________
 JV6248  GEOID HEIGHT    -        -33.151 (meters)                     GEOID18
 JV6248  DYNAMIC HEIGHT  -         14.044 (meters)       46.08  (feet) COMP
 JV6248  MODELED GRAVITY -    980,127.2   (mgal)                       NAVD 88
 JV6248
 JV6248  VERT ORDER      -  FIRST     CLASS II
 JV6248
 JV6248.The horizontal coordinates were established by autonomous hand held GPS
 JV6248.observations and have an estimated accuracy of +/- 10 meters.
 JV6248
 JV6248.The orthometric height was determined by differential leveling and
 JV6248.adjusted by the NATIONAL GEODETIC SURVEY
 JV6248.in June 1991.
 JV6248
 JV6248.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6248.GEOID18 height accuracy estimate available here.
 JV6248
 JV6248.Click photographs - Photos may exist for this station.
 JV6248
 JV6248.The dynamic height is computed by dividing the NAVD 88
 JV6248.geopotential number by the normal gravity value computed on the
 JV6248.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6248.degrees latitude (g = 980.6199 gals.).
 JV6248
 JV6248.The modeled gravity was interpolated from observed gravity values.
 JV6248
 JV6248;                    North         East    Units  Estimated Accuracy
 JV6248;SPC MD       -   209,217.      478,006.      MT  (+/- 10 meters HH2 GPS)
 JV6248
 JV6248_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0613378146(NAD 83)
 JV6248
 JV6248                          SUPERSEDED SURVEY CONTROL
 JV6248
 JV6248.No superseded survey control is available for this station.
 JV6248
 JV6248_MARKER: DV = VERTICAL CONTROL DISK
 JV6248_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 JV6248_SP_SET: BUILDING
 JV6248_STAMPING: A 175 1989
 JV6248_MARK LOGO: NGS
 JV6248_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6248_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6248+STABILITY: POSITION/ELEVATION WELL
 JV6248_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6248+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2015
 JV6248
 JV6248  HISTORY     - Date     Condition        Report By
 JV6248  HISTORY     - 1989     MONUMENTED       NGS
 JV6248  HISTORY     - 19980425 GOOD             USPSQD
 JV6248  HISTORY     - 20020309 GOOD             USPSQD
 JV6248  HISTORY     - 20061001 GOOD             USPSQD
 JV6248  HISTORY     - 20150920 GOOD             USPSQD
 JV6248
 JV6248                          STATION DESCRIPTION
 JV6248
 JV6248'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6248'IN HAVRE DE GRACE, AT 505 CONGRESS AVENUE, SET VERTICALLY IN THE WEST
 JV6248'FACE OF ST. JOHNS TOWERS APARTMENT, 1.3 M (4.3 FT) ABOVE THE GROUND
 JV6248'SURFACE, AND 0.4 M (1.3 FT) EAST OF THE SOUTHWEST CORNER OF THE
 JV6248'BUILDING.
 JV6248
 JV6248                          STATION RECOVERY (1998)
 JV6248
 JV6248'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6248'RECOVERED IN GOOD CONDITION.
 JV6248
 JV6248                          STATION RECOVERY (2002)
 JV6248
 JV6248'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV6248'FOUND.  WALL OF BUILDING IS BADLY CRACKED.
 JV6248
 JV6248                          STATION RECOVERY (2006)
 JV6248
 JV6248'RECOVERY NOTE BY US POWER SQUADRON 2006 (TYB)
 JV6248'RECOVERED IN GOOD CONDITION.
 JV6248
 JV6248                          STATION RECOVERY (2015)
 JV6248
 JV6248'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV6248'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2309 ***********************************************************************
 HU2309  DESIGNATION -  A 176
 HU2309  PID         -  HU2309
 HU2309  STATE/COUNTY-  MD/WICOMICO
 HU2309  COUNTRY     -  US
 HU2309  USGS QUAD   -  DELMAR (2016)
 HU2309
 HU2309                         *CURRENT SURVEY CONTROL
 HU2309  ______________________________________________________________________
 HU2309* NAD 83(1986) POSITION- 38 25 15.     (N) 075 37 09.     (W)   SCALED
 HU2309* NAVD 88 ORTHO HEIGHT -    13.099 (meters)       42.98  (feet) ADJUSTED
 HU2309  ______________________________________________________________________
 HU2309  GEOID HEIGHT    -        -35.736 (meters)                     GEOID18
 HU2309  DYNAMIC HEIGHT  -         13.091 (meters)       42.95  (feet) COMP
 HU2309  MODELED GRAVITY -    980,010.5   (mgal)                       NAVD 88
 HU2309
 HU2309  VERT ORDER      -  SECOND    CLASS I
 HU2309
 HU2309.The horizontal coordinates were scaled from a map and have
 HU2309.an estimated accuracy of +/- 6 seconds.
 HU2309
 HU2309.The orthometric height was determined by differential leveling and
 HU2309.adjusted by the NATIONAL GEODETIC SURVEY
 HU2309.in June 1991.
 HU2309
 HU2309.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2309.GEOID18 height accuracy estimate available here.
 HU2309
 HU2309.Click photographs - Photos may exist for this station.
 HU2309
 HU2309.The dynamic height is computed by dividing the NAVD 88
 HU2309.geopotential number by the normal gravity value computed on the
 HU2309.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2309.degrees latitude (g = 980.6199 gals.).
 HU2309
 HU2309.The modeled gravity was interpolated from observed gravity values.
 HU2309
 HU2309;                    North         East    Units  Estimated Accuracy
 HU2309;SPC MD       -    84,630.      520,580.      MT  (+/- 180 meters Scaled)
 HU2309
 HU2309_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH459526(NAD 83)
 HU2309
 HU2309                          SUPERSEDED SURVEY CONTROL
 HU2309
 HU2309  NGVD 29 (06/12/91)   13.348  (m)           43.79   (f) ADJUSTED    2 1
 HU2309
 HU2309.Superseded values are not recommended for survey control.
 HU2309
 HU2309.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2309.See file dsdata.pdf to determine how the superseded data were derived.
 HU2309
 HU2309_MARKER: I = METAL ROD
 HU2309_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2309_STAMPING: A 176 1990
 HU2309_MARK LOGO: NGS
 HU2309_PROJECTION: RECESSED 2 CENTIMETERS
 HU2309_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2309_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2309_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2309+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2309_ROD/PIPE-DEPTH: 31.8 meters
 HU2309_SLEEVE-DEPTH  : 0.9 meters
 HU2309
 HU2309  HISTORY     - Date     Condition        Report By
 HU2309  HISTORY     - 1990     MONUMENTED       NGS
 HU2309
 HU2309                          STATION DESCRIPTION
 HU2309
 HU2309'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2309'0.2 KM (0.12 MI) WESTERLY ALONG NAYLOR MILL ROAD FROM THE JUNCTION OF
 HU2309'JERSEY ROAD IN SALISBURY, THENCE 1.8 KM (1.12 MI) NORTHWESTERLY ALONG
 HU2309'LOG CABIN ROAD, 26.3 M (86.29 FT) NORTHWEST OF THE CENTER OF A
 HU2309'DRIVEWAY, 21.5 M (70.54 FT) NORTH OF THE NORTH CORNER OF A HOUSE,
 HU2309'12.1 M (39.70 FT) SOUTHWEST OF THE CENTER OF THE ROAD, 4.8 M (15.75
 HU2309'FT) SOUTHEAST OF UTILITY POLE NUMBER 702 47, AND LEVEL WITH THE ROAD.
 HU2309'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE
 HU2309'MONUMENT IS ON PROPERTY OWNED BY MR HARRY DERICKSON, RT 2 BOX 114,
 HU2309'LOG CABIN ROAD, SALISBURY, MD 21801, TELEPHONE NUMBER (301) 546-0254.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6221 ***********************************************************************
 JV6221  DESIGNATION -  A 177
 JV6221  PID         -  JV6221
 JV6221  STATE/COUNTY-  MD/HARFORD
 JV6221  COUNTRY     -  US
 JV6221  USGS QUAD   -  CONOWINGO DAM (2016)
 JV6221
 JV6221                         *CURRENT SURVEY CONTROL
 JV6221  ______________________________________________________________________
 JV6221* NAD 83(1986) POSITION- 39 39 09.9    (N) 076 11 16.8    (W)   HD_HELD2
 JV6221* NAVD 88 ORTHO HEIGHT -    81.219 (meters)      266.47  (feet) ADJUSTED
 JV6221  ______________________________________________________________________
 JV6221  GEOID HEIGHT    -        -32.884 (meters)                     GEOID18
 JV6221  DYNAMIC HEIGHT  -         81.180 (meters)      266.34  (feet) COMP
 JV6221  MODELED GRAVITY -    980,147.0   (mgal)                       NAVD 88
 JV6221
 JV6221  VERT ORDER      -  FIRST     CLASS II
 JV6221
 JV6221.The horizontal coordinates were established by autonomous hand held GPS
 JV6221.observations and have an estimated accuracy of +/- 10 meters.
 JV6221
 JV6221.The orthometric height was determined by differential leveling and
 JV6221.adjusted by the NATIONAL GEODETIC SURVEY
 JV6221.in June 1991.
 JV6221
 JV6221.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6221.GEOID18 height accuracy estimate available here.
 JV6221
 JV6221.Click photographs - Photos may exist for this station.
 JV6221
 JV6221.The dynamic height is computed by dividing the NAVD 88
 JV6221.geopotential number by the normal gravity value computed on the
 JV6221.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6221.degrees latitude (g = 980.6199 gals.).
 JV6221
 JV6221.The modeled gravity was interpolated from observed gravity values.
 JV6221
 JV6221;                    North         East    Units  Estimated Accuracy
 JV6221;SPC MD       -   220,785.      469,692.      MT  (+/- 10 meters HH2 GPS)
 JV6221
 JV6221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9807989891(NAD 83)
 JV6221
 JV6221                          SUPERSEDED SURVEY CONTROL
 JV6221
 JV6221.No superseded survey control is available for this station.
 JV6221
 JV6221_MARKER: I = METAL ROD
 JV6221_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6221_STAMPING: A 177 1989
 JV6221_MARK LOGO: NGS
 JV6221_PROJECTION: FLUSH
 JV6221_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6221_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6221_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6221+SATELLITE: SATELLITE OBSERVATIONS - June 17, 2005
 JV6221_ROD/PIPE-DEPTH: 7.8 meters
 JV6221
 JV6221  HISTORY     - Date     Condition        Report By
 JV6221  HISTORY     - 1989     MONUMENTED       NGS
 JV6221  HISTORY     - 20010304 GOOD             USPSQD
 JV6221  HISTORY     - 20050617 GOOD             GEOCAC
 JV6221
 JV6221                          STATION DESCRIPTION
 JV6221
 JV6221'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6221'1.6 KM (1.00 MI) SOUTHERLY ALONG STATE HIGHWAY 136 FROM THE JUNCTION
 JV6221'OF STATE HIGHWAY 440 IN DUBLIN, THENCE 7.7 KM (4.80 MI) EASTERLY
 JV6221'ALONG U.S. HIGHWAY 1, 14.1 M (46.3 FT) SOUTH OF THE CENTERLINE OF
 JV6221'THE HIGHWAY, 8.2 M (26.9 FT) SOUTHEAST OF THE EAST END OF A
 JV6221'GUARDRAIL, 1.5 M (4.9 FT) BELOW THE LEVEL OF THE HIGHWAY, 0.5 M (1.6
 JV6221'FT) SOUTH OF UTILITY POLE NUMBER 2568, AND 0.3 M (1.0 FT) NORTH OF A
 JV6221'WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 JV6221'LOGO CAP.
 JV6221
 JV6221                          STATION RECOVERY (2001)
 JV6221
 JV6221'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV6221'CHANGE DESCRIPTION - SOUTH OF NEW POWER POLE NUMBER 18 - OLD NUMBER
 JV6221'2568 IS MISSING ON POLE.
 JV6221
 JV6221                          STATION RECOVERY (2005)
 JV6221
 JV6221'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 JV6221'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2489 ***********************************************************************
 HU2489  DESIGNATION -  A 178
 HU2489  PID         -  HU2489
 HU2489  STATE/COUNTY-  MD/WICOMICO
 HU2489  COUNTRY     -  US
 HU2489  USGS QUAD   -  EDEN (2016)
 HU2489
 HU2489                         *CURRENT SURVEY CONTROL
 HU2489  ______________________________________________________________________
 HU2489* NAD 83(1986) POSITION- 38 20 04.     (N) 075 39 50.     (W)   SCALED
 HU2489* NAVD 88 ORTHO HEIGHT -     3.153 (meters)       10.34  (feet) ADJUSTED
 HU2489  ______________________________________________________________________
 HU2489  GEOID HEIGHT    -        -35.825 (meters)                     GEOID18
 HU2489  DYNAMIC HEIGHT  -          3.151 (meters)       10.34  (feet) COMP
 HU2489  MODELED GRAVITY -    980,002.3   (mgal)                       NAVD 88
 HU2489
 HU2489  VERT ORDER      -  SECOND    CLASS I
 HU2489
 HU2489.The horizontal coordinates were scaled from a map and have
 HU2489.an estimated accuracy of +/- 6 seconds.
 HU2489
 HU2489.The orthometric height was determined by differential leveling and
 HU2489.adjusted by the NATIONAL GEODETIC SURVEY
 HU2489.in June 1991.
 HU2489
 HU2489.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2489.GEOID18 height accuracy estimate available here.
 HU2489
 HU2489.Click photographs - Photos may exist for this station.
 HU2489
 HU2489.The dynamic height is computed by dividing the NAVD 88
 HU2489.geopotential number by the normal gravity value computed on the
 HU2489.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2489.degrees latitude (g = 980.6199 gals.).
 HU2489
 HU2489.The modeled gravity was interpolated from observed gravity values.
 HU2489
 HU2489;                    North         East    Units  Estimated Accuracy
 HU2489;SPC MD       -    74,980.      516,810.      MT  (+/- 180 meters Scaled)
 HU2489
 HU2489_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH419431(NAD 83)
 HU2489
 HU2489                          SUPERSEDED SURVEY CONTROL
 HU2489
 HU2489  NGVD 29 (06/12/91)    3.408  (m)           11.18   (f) ADJUSTED    2 1
 HU2489
 HU2489.Superseded values are not recommended for survey control.
 HU2489
 HU2489.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2489.See file dsdata.pdf to determine how the superseded data were derived.
 HU2489
 HU2489_MARKER: I = METAL ROD
 HU2489_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2489_STAMPING: A 178 1990
 HU2489_MARK LOGO: NGS
 HU2489_PROJECTION: RECESSED 3 CENTIMETERS
 HU2489_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2489_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2489_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2489+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2489_ROD/PIPE-DEPTH: 14.6 meters
 HU2489_SLEEVE-DEPTH  : 0.9 meters
 HU2489
 HU2489  HISTORY     - Date     Condition        Report By
 HU2489  HISTORY     - 1990     MONUMENTED       NGS
 HU2489
 HU2489                          STATION DESCRIPTION
 HU2489
 HU2489'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2489'2.1 KM (1.30 MI) NORTHWESTERLY ALONG SHARPS POINT ROAD FROM THE
 HU2489'JUNCTION OF CAMDEN AVENUE IN FRUITLAND, THENCE 1.8 KM (1.12 MI)
 HU2489'WESTERLY ALONG RIVERSIDE DRIVE, 34.8 M (114.17 FT) NORTH OF THE
 HU2489'NORTHWEST CORNER OF A HOUSE, 28.1 M (92.19 FT) NORTHWEST OF UTILITY
 HU2489'POLE NUMBER 45003 92027, 8.4 M (27.56 FT) SOUTH OF THE CENTERLINE OF
 HU2489'THE ROAD, 8.1 M (26.57 FT) EAST OF THE CENTER OF A DRIVEWAY, AND
 HU2489'LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2489'5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY RAYMOND
 HU2489'HALLOWAY, RT 1 BOX 162 RIVERSIDE DRIVE, SALISBURY, MD 21801,
 HU2489'TELEPHONE NUMBER (301) 742-1417.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2221 ***********************************************************************
 HU2221  DESIGNATION -  A 179
 HU2221  PID         -  HU2221
 HU2221  STATE/COUNTY-  MD/WICOMICO
 HU2221  COUNTRY     -  US
 HU2221  USGS QUAD   -  HEBRON (2016)
 HU2221
 HU2221                         *CURRENT SURVEY CONTROL
 HU2221  ______________________________________________________________________
 HU2221* NAD 83(1986) POSITION- 38 25 39.4    (N) 075 44 51.2    (W)   HD_HELD2
 HU2221* NAVD 88 ORTHO HEIGHT -     6.989 (meters)       22.93  (feet) ADJUSTED
 HU2221  ______________________________________________________________________
 HU2221  GEOID HEIGHT    -        -35.625 (meters)                     GEOID18
 HU2221  DYNAMIC HEIGHT  -          6.985 (meters)       22.92  (feet) COMP
 HU2221  MODELED GRAVITY -    980,012.9   (mgal)                       NAVD 88
 HU2221
 HU2221  VERT ORDER      -  SECOND    CLASS I
 HU2221
 HU2221.The horizontal coordinates were established by autonomous hand held GPS
 HU2221.observations and have an estimated accuracy of +/- 10 meters.
 HU2221
 HU2221.The orthometric height was determined by differential leveling and
 HU2221.adjusted by the NATIONAL GEODETIC SURVEY
 HU2221.in June 1991.
 HU2221
 HU2221.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2221.GEOID18 height accuracy estimate available here.
 HU2221
 HU2221.Click photographs - Photos may exist for this station.
 HU2221
 HU2221.The dynamic height is computed by dividing the NAVD 88
 HU2221.geopotential number by the normal gravity value computed on the
 HU2221.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2221.degrees latitude (g = 980.6199 gals.).
 HU2221
 HU2221.The modeled gravity was interpolated from observed gravity values.
 HU2221
 HU2221;                    North         East    Units  Estimated Accuracy
 HU2221;SPC MD       -    85,218.      509,358.      MT  (+/- 10 meters HH2 GPS)
 HU2221
 HU2221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3474953525(NAD 83)
 HU2221
 HU2221                          SUPERSEDED SURVEY CONTROL
 HU2221
 HU2221  NGVD 29 (06/12/91)    7.236  (m)           23.74   (f) ADJUSTED    2 1
 HU2221
 HU2221.Superseded values are not recommended for survey control.
 HU2221
 HU2221.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2221.See file dsdata.pdf to determine how the superseded data were derived.
 HU2221
 HU2221_MARKER: F = FLANGE-ENCASED ROD
 HU2221_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2221_STAMPING: A 179 1990
 HU2221_MARK LOGO: NGS
 HU2221_PROJECTION: RECESSED 12 CENTIMETERS
 HU2221_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2221_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2221_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2221+SATELLITE: SATELLITE OBSERVATIONS - June 07, 2017
 HU2221_ROD/PIPE-DEPTH: 13.2 meters
 HU2221_SLEEVE-DEPTH  : 0.9 meters
 HU2221
 HU2221  HISTORY     - Date     Condition        Report By
 HU2221  HISTORY     - 1990     MONUMENTED       NGS
 HU2221  HISTORY     - 20170607 GOOD             ARCSHE
 HU2221
 HU2221                          STATION DESCRIPTION
 HU2221
 HU2221'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2221'0.9 KM (0.56 MI) SOUTHEASTERLY ALONG BRIDGE STREET FROM THE POST
 HU2221'OFFICE IN MARDELA SPRINGS, THENCE 0.5 KM (0.31 MI) SOUTHWESTERLY
 HU2221'ALONG ATHOL ROAD, THENCE 2.8 KM (1.74 MI) SOUTHEASTERLY ALONG MILL
 HU2221'BRANCH ROAD, THENCE 0.9 KM (0.56 MI) SOUTHWESTERLY ALONG RIGGIN ROAD,
 HU2221'15.8 M (51.84 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF A HOUSE, 11.9
 HU2221'M (39.04 FT) NORTHWEST OF THE CENTERLINE OF THE ROAD, 5.0 M (16.40
 HU2221'FT) SOUTHWEST OF THE CENTER OF A DRIVEWAY, 1.9 M (6.23 FT) SOUTHWEST
 HU2221'OF UTILITY POLE NUMBER YS 26 T37, AND LEVEL WITH THE ROAD.
 HU2221'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE
 HU2221'MARK IS ON PROPERTY OWNED BY MR. RICHARD ROBINSON, RT 1 BOX 778,
 HU2221'MARDELA SPRINGS, MD 21837, TELEPHONE NUMBER (301) 749-4087.
 HU2221
 HU2221                          STATION RECOVERY (2017)
 HU2221
 HU2221'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2221'THE MARK IS 83 FT (25.3 M) SOUTHEAST OF THE SOUTHEAST FACE OF THE
 HU2221'HOUSE NUMBER 8490 AND 6 FT (1.8 M) NORTHEAST OF THE MOST SOUTHWEST
 HU2221'LINE OF THE HOUSE EXTENDED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2161 ***********************************************************************
 HU2161  DESIGNATION -  A 180
 HU2161  PID         -  HU2161
 HU2161  STATE/COUNTY-  MD/WICOMICO
 HU2161  COUNTRY     -  US
 HU2161  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2161
 HU2161                         *CURRENT SURVEY CONTROL
 HU2161  ______________________________________________________________________
 HU2161* NAD 83(1986) POSITION- 38 23 40.3    (N) 075 48 00.7    (W)   HD_HELD2
 HU2161* NAVD 88 ORTHO HEIGHT -     3.305 (meters)       10.84  (feet) ADJUSTED
 HU2161  ______________________________________________________________________
 HU2161  GEOID HEIGHT    -        -35.625 (meters)                     GEOID18
 HU2161  DYNAMIC HEIGHT  -          3.303 (meters)       10.84  (feet) COMP
 HU2161  MODELED GRAVITY -    980,008.9   (mgal)                       NAVD 88
 HU2161
 HU2161  VERT ORDER      -  SECOND    CLASS I
 HU2161
 HU2161.The horizontal coordinates were established by autonomous hand held GPS
 HU2161.observations and have an estimated accuracy of +/- 10 meters.
 HU2161
 HU2161.The orthometric height was determined by differential leveling and
 HU2161.adjusted by the NATIONAL GEODETIC SURVEY
 HU2161.in June 1991.
 HU2161
 HU2161.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2161.GEOID18 height accuracy estimate available here.
 HU2161
 HU2161.Click photographs - Photos may exist for this station.
 HU2161
 HU2161.The dynamic height is computed by dividing the NAVD 88
 HU2161.geopotential number by the normal gravity value computed on the
 HU2161.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2161.degrees latitude (g = 980.6199 gals.).
 HU2161
 HU2161.The modeled gravity was interpolated from observed gravity values.
 HU2161
 HU2161;                    North         East    Units  Estimated Accuracy
 HU2161;SPC MD       -    81,484.      504,810.      MT  (+/- 10 meters HH2 GPS)
 HU2161
 HU2161_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3012249893(NAD 83)
 HU2161
 HU2161                          SUPERSEDED SURVEY CONTROL
 HU2161
 HU2161  NGVD 29 (06/12/91)    3.554  (m)           11.66   (f) ADJUSTED    2 1
 HU2161
 HU2161.Superseded values are not recommended for survey control.
 HU2161
 HU2161.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2161.See file dsdata.pdf to determine how the superseded data were derived.
 HU2161
 HU2161_MARKER: F = FLANGE-ENCASED ROD
 HU2161_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2161_STAMPING: A 180 1990
 HU2161_MARK LOGO: NGS
 HU2161_PROJECTION: RECESSED 11 CENTIMETERS
 HU2161_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2161_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2161_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2161+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2018
 HU2161_ROD/PIPE-DEPTH: 10.9 meters
 HU2161_SLEEVE-DEPTH  : 0.9 meters
 HU2161
 HU2161  HISTORY     - Date     Condition        Report By
 HU2161  HISTORY     - 1990     MONUMENTED       NGS
 HU2161  HISTORY     - 20180718 GOOD             PROFLN
 HU2161
 HU2161                          STATION DESCRIPTION
 HU2161
 HU2161'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2161'6.9 KM (4.29 MI) NORTHWESTERLY ALONG CHERRY WALK ROAD FROM THE
 HU2161'JUNCTION OF STATE HIGHWAY 347 IN QUANTICO, 64.8 M (212.60 FT)
 HU2161'NORTHEAST OF THE CENTER OF A DRIVEWAY, 63.5 M (208.33 FT) SOUTHWEST
 HU2161'OF THE CENTER OF A DRIVEWAY, 6.8 M (22.31 FT) NORTHWEST OF AND LEVEL
 HU2161'WITH THE ROAD CENTER, 1.1 M (3.61 FT) NORTHEAST OF A FENCE CORNER,
 HU2161'AND 0.4 M (1.31 FT) SOUTHEAST OF A WITNESS POST AND FENCE.
 HU2161'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2161
 HU2161                          STATION RECOVERY (2018)
 HU2161
 HU2161'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2018 (JRO)
 HU2161'THE MARK IS 134 FT (40.8 M) SOUTHWEST CROSSING THE ROAD DIRECTLY FROM
 HU2161'A TELEPHONE PEDESTAL, 128 FT (39.0 M) SOUTH-SOUTHWEST ALONG THE ROAD
 HU2161'FROM A POINT OPPOSITE THE PEDESTAL, ON THE EXTENDED LINE TO THE
 HU2161'SOUTHEAST OF LARGE EVERGREENS THAT DIVIDE A FIELD.  THE LOGO CAP IS
 HU2161'0.2 FT (6 CM) BELOW GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2452 ***********************************************************************
 HU2452  DESIGNATION -  A 181
 HU2452  PID         -  HU2452
 HU2452  STATE/COUNTY-  MD/WICOMICO
 HU2452  COUNTRY     -  US
 HU2452  USGS QUAD   -  DELMAR (2016)
 HU2452
 HU2452                         *CURRENT SURVEY CONTROL
 HU2452  ______________________________________________________________________
 HU2452* NAD 83(1986) POSITION- 38 22 52.     (N) 075 30 51.     (W)   SCALED
 HU2452* NAVD 88 ORTHO HEIGHT -    15.221 (meters)       49.94  (feet) ADJUSTED
 HU2452  ______________________________________________________________________
 HU2452  GEOID HEIGHT    -        -35.848 (meters)                     GEOID18
 HU2452  DYNAMIC HEIGHT  -         15.211 (meters)       49.90  (feet) COMP
 HU2452  MODELED GRAVITY -    980,006.7   (mgal)                       NAVD 88
 HU2452
 HU2452  VERT ORDER      -  SECOND    CLASS I
 HU2452
 HU2452.The horizontal coordinates were scaled from a map and have
 HU2452.an estimated accuracy of +/- 6 seconds.
 HU2452
 HU2452.The orthometric height was determined by differential leveling and
 HU2452.adjusted by the NATIONAL GEODETIC SURVEY
 HU2452.in June 1991.
 HU2452
 HU2452.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2452.GEOID18 height accuracy estimate available here.
 HU2452
 HU2452.Click photographs - Photos may exist for this station.
 HU2452
 HU2452.The dynamic height is computed by dividing the NAVD 88
 HU2452.geopotential number by the normal gravity value computed on the
 HU2452.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2452.degrees latitude (g = 980.6199 gals.).
 HU2452
 HU2452.The modeled gravity was interpolated from observed gravity values.
 HU2452
 HU2452;                    North         East    Units  Estimated Accuracy
 HU2452;SPC MD       -    80,360.      529,820.      MT  (+/- 180 meters Scaled)
 HU2452
 HU2452_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH550482(NAD 83)
 HU2452
 HU2452                          SUPERSEDED SURVEY CONTROL
 HU2452
 HU2452  NGVD 29 (06/12/91)   15.469  (m)           50.75   (f) ADJUSTED    2 1
 HU2452
 HU2452.Superseded values are not recommended for survey control.
 HU2452
 HU2452.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2452.See file dsdata.pdf to determine how the superseded data were derived.
 HU2452
 HU2452_MARKER: I = METAL ROD
 HU2452_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2452_STAMPING: A 181 1990
 HU2452_MARK LOGO: NGS
 HU2452_PROJECTION: RECESSED 2 CENTIMETERS
 HU2452_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2452_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2452_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2452+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2452_ROD/PIPE-DEPTH: 21.8 meters
 HU2452_SLEEVE-DEPTH  : 0.9 meters
 HU2452
 HU2452  HISTORY     - Date     Condition        Report By
 HU2452  HISTORY     - 1990     MONUMENTED       NGS
 HU2452
 HU2452                          STATION DESCRIPTION
 HU2452
 HU2452'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2452'3.7 KM (2.30 MI) EASTERLY ALONG STATE HIGHWAY 346 FROM THE JUNCTION OF
 HU2452'PHILLIP MORRIS DRIVE IN SALISBURY, 12.1 M (39.70 FT) SOUTHEAST OF THE
 HU2452'EXTENDED CENTER OF KENILWORTH DRIVE, 9.7 M (31.82 FT) SOUTH OF THE
 HU2452'CENTER OF A DIRT ROAD LEADING EAST, 7.8 M (25.59 FT) NORTHWEST OF AND
 HU2452'LEVEL WITH THE HIGHWAY CENTERLINE, AND 2.3 M (7.55 FT) SOUTHEAST OF
 HU2452'UTILITY POLE NUMBER 49301 93709.  NOTE--ACCESS TO THE DATUM POINT IS
 HU2452'THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2346 ***********************************************************************
 HU2346  DESIGNATION -  A 182
 HU2346  PID         -  HU2346
 HU2346  STATE/COUNTY-  MD/WICOMICO
 HU2346  COUNTRY     -  US
 HU2346  USGS QUAD   -  SALISBURY (2016)
 HU2346
 HU2346                         *CURRENT SURVEY CONTROL
 HU2346  ______________________________________________________________________
 HU2346* NAD 83(1986) POSITION- 38 19 07.     (N) 075 34 48.     (W)   SCALED
 HU2346* NAVD 88 ORTHO HEIGHT -    11.803 (meters)       38.72  (feet) ADJUSTED
 HU2346  ______________________________________________________________________
 HU2346  GEOID HEIGHT    -        -35.910 (meters)                     GEOID18
 HU2346  DYNAMIC HEIGHT  -         11.795 (meters)       38.70  (feet) COMP
 HU2346  MODELED GRAVITY -    980,000.5   (mgal)                       NAVD 88
 HU2346
 HU2346  VERT ORDER      -  SECOND    CLASS I
 HU2346
 HU2346.The horizontal coordinates were scaled from a map and have
 HU2346.an estimated accuracy of +/- 6 seconds.
 HU2346
 HU2346.The orthometric height was determined by differential leveling and
 HU2346.adjusted by the NATIONAL GEODETIC SURVEY
 HU2346.in June 1991.
 HU2346
 HU2346.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2346.GEOID18 height accuracy estimate available here.
 HU2346
 HU2346.Click photographs - Photos may exist for this station.
 HU2346
 HU2346.The dynamic height is computed by dividing the NAVD 88
 HU2346.geopotential number by the normal gravity value computed on the
 HU2346.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2346.degrees latitude (g = 980.6199 gals.).
 HU2346
 HU2346.The modeled gravity was interpolated from observed gravity values.
 HU2346
 HU2346;                    North         East    Units  Estimated Accuracy
 HU2346;SPC MD       -    73,340.      524,180.      MT  (+/- 180 meters Scaled)
 HU2346
 HU2346_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH492413(NAD 83)
 HU2346
 HU2346                          SUPERSEDED SURVEY CONTROL
 HU2346
 HU2346  NGVD 29 (06/12/91)   12.056  (m)           39.55   (f) ADJUSTED    2 1
 HU2346
 HU2346.Superseded values are not recommended for survey control.
 HU2346
 HU2346.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2346.See file dsdata.pdf to determine how the superseded data were derived.
 HU2346
 HU2346_MARKER: I = METAL ROD
 HU2346_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2346_STAMPING: A 182 1989
 HU2346_MARK LOGO: NGS
 HU2346_PROJECTION: FLUSH
 HU2346_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2346_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2346_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2346+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HU2346_ROD/PIPE-DEPTH: 21.8 meters
 HU2346_SLEEVE-DEPTH  : 0.9 meters
 HU2346
 HU2346  HISTORY     - Date     Condition        Report By
 HU2346  HISTORY     - 1989     MONUMENTED       NGS
 HU2346
 HU2346                          STATION DESCRIPTION
 HU2346
 HU2346'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU2346'2.3 KM (1.43 MI) NORTHEASTERLY ALONG DIVISION STREET FROM ITS JUNCTION
 HU2346'WITH U.S. HIGHWAY 13 IN FRUITLAND, THENCE 2.1 KM (1.30 MI) EASTERLY
 HU2346'ALONG MORRIS MILL ROAD, 18.2 M (59.71 FT) EAST OF THE CENTER OF UNION
 HU2346'CHURCH ROAD, 8.2 M (26.90 FT) SOUTH OF THE CENTERLINE OF THE ROAD,
 HU2346'2.6 M (8.53 FT) EAST OF UTILITY POLE NUMBER 47394 91444, 1.0 M
 HU2346'(3.28 FT) WEST OF A WITNESS POST, AND 0.2 M (0.66 FT) ABOVE THE LEVEL
 HU2346'OF THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 HU2346'LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6821 ***********************************************************************
 DG6821  DESIGNATION -  A 183 RESET
 DG6821  PID         -  DG6821
 DG6821  STATE/COUNTY-  MD/WICOMICO
 DG6821  COUNTRY     -  US
 DG6821  USGS QUAD   -  DELMAR (2016)
 DG6821
 DG6821                         *CURRENT SURVEY CONTROL
 DG6821  ______________________________________________________________________
 DG6821* NAD 83(1986) POSITION- 38 24 02.     (N) 075 34 21.     (W)   SCALED
 DG6821* NAVD 88 ORTHO HEIGHT -    11.387 (meters)       37.36  (feet) ADJUSTED
 DG6821  ______________________________________________________________________
 DG6821  GEOID HEIGHT    -        -35.788 (meters)                     GEOID18
 DG6821  DYNAMIC HEIGHT  -         11.380 (meters)       37.34  (feet) COMP
 DG6821  MODELED GRAVITY -    980,008.7   (mgal)                       NAVD 88
 DG6821
 DG6821  VERT ORDER      -  SECOND    CLASS I
 DG6821
 DG6821.The horizontal coordinates were scaled from a map and have
 DG6821.an estimated accuracy of +/- 6 seconds.
 DG6821
 DG6821.The orthometric height was determined by differential leveling and
 DG6821.adjusted by the NATIONAL GEODETIC SURVEY
 DG6821.in December 2004.
 DG6821
 DG6821.No vertical observational check was made to the station.
 DG6821
 DG6821.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6821.GEOID18 height accuracy estimate available here.
 DG6821
 DG6821.Click photographs - Photos may exist for this station.
 DG6821
 DG6821.The dynamic height is computed by dividing the NAVD 88
 DG6821.geopotential number by the normal gravity value computed on the
 DG6821.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6821.degrees latitude (g = 980.6199 gals.).
 DG6821
 DG6821.The modeled gravity was interpolated from observed gravity values.
 DG6821
 DG6821;                    North         East    Units  Estimated Accuracy
 DG6821;SPC MD       -    82,440.      524,690.      MT  (+/- 180 meters Scaled)
 DG6821
 DG6821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH500504(NAD 83)
 DG6821
 DG6821                          SUPERSEDED SURVEY CONTROL
 DG6821
 DG6821.No superseded survey control is available for this station.
 DG6821
 DG6821_MARKER: DD = SURVEY DISK
 DG6821_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 DG6821_SP_SET: OVERHEAD BASE SIGN
 DG6821_STAMPING: A 183 RESET 2002
 DG6821_MARK LOGO: MDSHA
 DG6821_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6821_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6821+STABILITY: SURFACE MOTION
 DG6821_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6821+SATELLITE: SATELLITE OBSERVATIONS - 2002
 DG6821
 DG6821  HISTORY     - Date     Condition        Report By
 DG6821  HISTORY     - 2002     MONUMENTED       MDSHA
 DG6821
 DG6821                          STATION DESCRIPTION
 DG6821
 DG6821'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG6821'THE STATION IS LOCATED ABOUT 2.7 MI (4.35 KM) NORTH OF THE CITY OF
 DG6821'SALISBURY.  TO REACH THE STATION FROM THE INTERSECTION OF NAYLOR MILL
 DG6821'ROAD AND U.S.HIGHWAY 13, GO SOUTH ALONG U.S.HIGHWAY 13 FOR 0.5 MI (0.8
 DG6821'KM) TO THE ENTRANCE RAMP TO THE SALISBURY BYPASS AND THE STATION ON
 DG6821'THE RIGHT.  THE STATION IS A MARYLAND STATE SURVEY DISK SET IN A DRILL
 DG6821'HOLE IN A  10 FOOT BY 4 FOOT CONCRETE BASE FOR A LARGE OVERHEAD
 DG6821'HIGHWAY SIGN.  IT IS 37.9 FT (11.6 M) NORTH OF THE CENTER OF THE RAMP,
 DG6821'119.0 FT (36.3 M) NORTHEAST OF THE CENTER LINE OF THE SOUTHBOUND LANES
 DG6821'OF U.S.HIGHWAY 13 (BUSINESS), 29.5 FT (9.0 M) NORTHEAST OF THE
 DG6821'SOUTHWEST END OF A METAL GUARD RAIL, 3.7 FT (1.1 M) SOUTH OF A
 DG6821'CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2294 ***********************************************************************
 HU2294  DESIGNATION -  A 184
 HU2294  PID         -  HU2294
 HU2294  STATE/COUNTY-  MD/WICOMICO
 HU2294  COUNTRY     -  US
 HU2294  USGS QUAD   -  EDEN (2016)
 HU2294
 HU2294                         *CURRENT SURVEY CONTROL
 HU2294  ______________________________________________________________________
 HU2294* NAD 83(1986) POSITION- 38 21 03.     (N) 075 39 12.     (W)   SCALED
 HU2294* NAVD 88 ORTHO HEIGHT -     7.753 (meters)       25.44  (feet) ADJUSTED
 HU2294  ______________________________________________________________________
 HU2294  GEOID HEIGHT    -        -35.804 (meters)                     GEOID18
 HU2294  DYNAMIC HEIGHT  -          7.748 (meters)       25.42  (feet) COMP
 HU2294  MODELED GRAVITY -    980,004.1   (mgal)                       NAVD 88
 HU2294
 HU2294  VERT ORDER      -  SECOND    CLASS I
 HU2294
 HU2294.The horizontal coordinates were scaled from a map and have
 HU2294.an estimated accuracy of +/- 6 seconds.
 HU2294
 HU2294.The orthometric height was determined by differential leveling and
 HU2294.adjusted by the NATIONAL GEODETIC SURVEY
 HU2294.in June 1991.
 HU2294
 HU2294.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2294.GEOID18 height accuracy estimate available here.
 HU2294
 HU2294.Click photographs - Photos may exist for this station.
 HU2294
 HU2294.The dynamic height is computed by dividing the NAVD 88
 HU2294.geopotential number by the normal gravity value computed on the
 HU2294.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2294.degrees latitude (g = 980.6199 gals.).
 HU2294
 HU2294.The modeled gravity was interpolated from observed gravity values.
 HU2294
 HU2294;                    North         East    Units  Estimated Accuracy
 HU2294;SPC MD       -    76,810.      517,710.      MT  (+/- 180 meters Scaled)
 HU2294
 HU2294_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH429449(NAD 83)
 HU2294
 HU2294                          SUPERSEDED SURVEY CONTROL
 HU2294
 HU2294  NGVD 29 (06/12/91)    8.006  (m)           26.27   (f) ADJUSTED    2 1
 HU2294
 HU2294.Superseded values are not recommended for survey control.
 HU2294
 HU2294.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2294.See file dsdata.pdf to determine how the superseded data were derived.
 HU2294
 HU2294_MARKER: I = METAL ROD
 HU2294_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2294_STAMPING: A 184 1990
 HU2294_MARK LOGO: NGS
 HU2294_PROJECTION: RECESSED 3 CENTIMETERS
 HU2294_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2294_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2294_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2294+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2294_ROD/PIPE-DEPTH: 20.4 meters
 HU2294_SLEEVE-DEPTH  : 0.9 meters
 HU2294
 HU2294  HISTORY     - Date     Condition        Report By
 HU2294  HISTORY     - 1990     MONUMENTED       NGS
 HU2294
 HU2294                          STATION DESCRIPTION
 HU2294
 HU2294'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2294'3.2 KM (1.99 MI) SOUTHEASTERLY ALONG PEMBERTON DRIVE FROM THE
 HU2294'JUNCTION OF ELLEGOOD STREET IN SALISBURY, 18.5 M (60.70 FT) SOUTHWEST
 HU2294'OF THE CENTER OF A DRIVEWAY, 12.4 M (40.68 FT) NORTHEAST OF UTILITY
 HU2294'POLE NUMBER 70, 8.4 M (27.56 FT) SOUTHEAST OF THE CENTERLINE OF THE
 HU2294'DRIVE, 1.7 M (5.58 FT) EAST OF A FENCE CORNER, AND LEVEL WITH THE
 HU2294'DRIVE.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2294'THE MONUMENT IS ON PROPERTY OWNED BY JUDY MYERS, ROUTE 12 BOX 384,
 HU2294'SALISBURY, MD 21801, TELEPHONE NUMBER (301) 860-0540.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2236 ***********************************************************************
 HU2236  DESIGNATION -  A 185
 HU2236  PID         -  HU2236
 HU2236  STATE/COUNTY-  MD/WICOMICO
 HU2236  COUNTRY     -  US
 HU2236  USGS QUAD   -  HEBRON (2016)
 HU2236
 HU2236                         *CURRENT SURVEY CONTROL
 HU2236  ______________________________________________________________________
 HU2236* NAD 83(1986) POSITION- 38 23 52.     (N) 075 41 56.     (W)   SCALED
 HU2236* NAVD 88 ORTHO HEIGHT -    11.327 (meters)       37.16  (feet) ADJUSTED
 HU2236  ______________________________________________________________________
 HU2236  GEOID HEIGHT    -        -35.699 (meters)                     GEOID18
 HU2236  DYNAMIC HEIGHT  -         11.320 (meters)       37.14  (feet) COMP
 HU2236  MODELED GRAVITY -    980,009.5   (mgal)                       NAVD 88
 HU2236
 HU2236  VERT ORDER      -  SECOND    CLASS I
 HU2236
 HU2236.The horizontal coordinates were scaled from a map and have
 HU2236.an estimated accuracy of +/- 6 seconds.
 HU2236
 HU2236.The orthometric height was determined by differential leveling and
 HU2236.adjusted by the NATIONAL GEODETIC SURVEY
 HU2236.in June 1991.
 HU2236
 HU2236.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2236.GEOID18 height accuracy estimate available here.
 HU2236
 HU2236.Click photographs - Photos may exist for this station.
 HU2236
 HU2236.The dynamic height is computed by dividing the NAVD 88
 HU2236.geopotential number by the normal gravity value computed on the
 HU2236.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2236.degrees latitude (g = 980.6199 gals.).
 HU2236
 HU2236.The modeled gravity was interpolated from observed gravity values.
 HU2236
 HU2236;                    North         East    Units  Estimated Accuracy
 HU2236;SPC MD       -    81,970.      513,650.      MT  (+/- 180 meters Scaled)
 HU2236
 HU2236_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH389501(NAD 83)
 HU2236
 HU2236                          SUPERSEDED SURVEY CONTROL
 HU2236
 HU2236  NGVD 29 (06/12/91)   11.575  (m)           37.98   (f) ADJUSTED    2 1
 HU2236
 HU2236.Superseded values are not recommended for survey control.
 HU2236
 HU2236.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2236.See file dsdata.pdf to determine how the superseded data were derived.
 HU2236
 HU2236_STAMPING: A 185 1990
 HU2236_MARK LOGO: NGS
 HU2236_PROJECTION: RECESSED 5 CENTIMETERS
 HU2236_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2236+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2236_ROD/PIPE-DEPTH: 18.6 meters
 HU2236_SLEEVE-DEPTH  : 0.9 meters
 HU2236
 HU2236  HISTORY     - Date     Condition        Report By
 HU2236  HISTORY     - 1990     MONUMENTED       NGS
 HU2236  HISTORY     - 20190513 MARK NOT FOUND   PROFLN
 HU2236
 HU2236                          STATION DESCRIPTION
 HU2236
 HU2236'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2236'2.2 KM (1.37 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU2236'ROAD) FROM THE JUNCTION OF RAILROAD AVENUE IN HEBRON, THENCE 0.7 KM
 HU2236'(0.43 MI) SOUTHEASTERLY ALONG QUANTICO CREEK ROAD, THENCE 0.4 KM
 HU2236'(0.25 MI) SOUTHEASTERLY ALONG FIRE TOWER ROAD, 39.4 M (129.26 FT)
 HU2236'SOUTHEAST OF THE SOUTH CORNER OF A HOUSE, 10.2 M (33.46 FT) NORTHEAST
 HU2236'OF THE CENTER OF THE ROAD, 1.5 M (4.92 FT) SOUTHEAST OF A UTILITY
 HU2236'POLE, 0.6 M (1.97 FT) SOUTHWEST OF A WITNESS POST.  AND LEVEL WITH
 HU2236'THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO
 HU2236'CAP.
 HU2236
 HU2236                          STATION RECOVERY (2019)
 HU2236
 HU2236'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2236'THE MARK IS SUSPECTED LOST BECAUSE OF CONSTRUCTION AND EARTH MOVING
 HU2236'FOR A HOUSING DEVELOPMENT.  THERE ARE TWO HOUSES THAT MIGHT HAVE BEEN
 HU2236'THE ONE MEASURED FROM IN 1990, BUT THE MARK WAS NOT LOCATED FROM
 HU2236'EITHER ONE OF THEM, AT THE MILEAGE SE ALONG FIRE TOWER ROAD FROM
 HU2236'QUANTICO CREEK ROAD WHICH IS ROUGHLY 230 FT (70.1 M) NORTHWEST OF
 HU2236'MISTY CREEK DR. THE TIES IN THE NORTHERLY - SOUTHERLY DIRECTION ARE
 HU2236'INADEQUATE TO LOCATE THE MARK.  I WALKED A LINE WITH METAL DETECTOR
 HU2236'FOR ABOUT 100 FT (30.5 M) AT THE DISTANCE OFF THE ROAD WITHOUT GOOD
 HU2236'RESULT.  THE POWER POLES IN THE AREA NOW APPEAR TO BE IN DIFFERENT
 HU2236'PLACES THAN THE POLE IN 1990.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2206 ***********************************************************************
 HU2206  DESIGNATION -  A 186
 HU2206  PID         -  HU2206
 HU2206  STATE/COUNTY-  MD/WICOMICO
 HU2206  COUNTRY     -  US
 HU2206  USGS QUAD   -  HEBRON (2016)
 HU2206
 HU2206                         *CURRENT SURVEY CONTROL
 HU2206  ______________________________________________________________________
 HU2206* NAD 83(1986) POSITION- 38 29 03.0    (N) 075 43 07.1    (W)   HD_HELD2
 HU2206* NAVD 88 ORTHO HEIGHT -    10.913 (meters)       35.80  (feet) ADJUSTED
 HU2206  ______________________________________________________________________
 HU2206  GEOID HEIGHT    -        -35.600 (meters)                     GEOID18
 HU2206  DYNAMIC HEIGHT  -         10.906 (meters)       35.78  (feet) COMP
 HU2206  MODELED GRAVITY -    980,015.2   (mgal)                       NAVD 88
 HU2206
 HU2206  VERT ORDER      -  SECOND    CLASS I
 HU2206
 HU2206.The horizontal coordinates were established by autonomous hand held GPS
 HU2206.observations and have an estimated accuracy of +/- 10 meters.
 HU2206
 HU2206.The orthometric height was determined by differential leveling and
 HU2206.adjusted by the NATIONAL GEODETIC SURVEY
 HU2206.in June 1991.
 HU2206
 HU2206.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2206.GEOID18 height accuracy estimate available here.
 HU2206
 HU2206.Click photographs - Photos may exist for this station.
 HU2206
 HU2206.The dynamic height is computed by dividing the NAVD 88
 HU2206.geopotential number by the normal gravity value computed on the
 HU2206.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2206.degrees latitude (g = 980.6199 gals.).
 HU2206
 HU2206.The modeled gravity was interpolated from observed gravity values.
 HU2206
 HU2206;                    North         East    Units  Estimated Accuracy
 HU2206;SPC MD       -    91,530.      511,794.      MT  (+/- 10 meters HH2 GPS)
 HU2206
 HU2206_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3732259781(NAD 83)
 HU2206
 HU2206                          SUPERSEDED SURVEY CONTROL
 HU2206
 HU2206  NGVD 29 (06/12/91)   11.158  (m)           36.61   (f) ADJUSTED    2 1
 HU2206
 HU2206.Superseded values are not recommended for survey control.
 HU2206
 HU2206.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2206.See file dsdata.pdf to determine how the superseded data were derived.
 HU2206
 HU2206_MARKER: F = FLANGE-ENCASED ROD
 HU2206_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2206_STAMPING: A 186 1990
 HU2206_MARK LOGO: NGS
 HU2206_PROJECTION: RECESSED 2 CENTIMETERS
 HU2206_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2206_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2206_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2206+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2019
 HU2206_ROD/PIPE-DEPTH: 25.5 meters
 HU2206_SLEEVE-DEPTH  : 0.9 meters
 HU2206
 HU2206  HISTORY     - Date     Condition        Report By
 HU2206  HISTORY     - 1990     MONUMENTED       NGS
 HU2206  HISTORY     - 20190516 GOOD             PROFLN
 HU2206
 HU2206                          STATION DESCRIPTION
 HU2206
 HU2206'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2206'5.0 KM (3.11 MI) NORTHERLY ALONG STATE HIGHWAY 313 FROM THE JUNCTION
 HU2206'OF STATE HIGHWAY 54 IN MARDELA SPRINGS, THENCE 3.7 KM (2.30 MI)
 HU2206'SOUTHEASTERLY ALONG SNETHERN CHURCH ROAD, 12.0 M (39.37 FT) SOUTHWEST
 HU2206'OF THE CENTER OF THE ROAD, 5.1 M (16.73 FT) NORTH OF THE CENTER OF A
 HU2206'FIELD ENTRANCE, 3.8 M (12.47 FT) SOUTH OF THE SOUTH CORNER OF UTILITY
 HU2206'PEDESTAL NUMBER 714-76, 0.5 M (1.64 FT) NORTHEAST OF A WITNESS POST
 HU2206'AND FENCE, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DATUM POINT
 HU2206'IS THROUGH A 5-INCH LOGO CAP.
 HU2206
 HU2206                          STATION RECOVERY (2019)
 HU2206
 HU2206'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2206'RECOVERY AIDED BY COMPUTING A NEW SEARCH POSITION USING THE RUNNING
 HU2206'DISTANCE, 1.04 KM (0.65 MI), NORTH-NORTHWEST FROM ADJOINING MARK P 179
 HU2206'IN GOOGLE EARTH.  THE MARK IS 5 FT (1.5 M) SOUTHEAST OF THE SOUTHEAST
 HU2206'LINE EXTENDED OF A LARGE ALUMINUM ELECTRIC BOX 714-76 (4 FT CUBE), 1.5
 HU2206'FT (0.5 M) SOUTHWEST AWAY FROM THE ROAD FROM A STRING OF BARBED WIRE,
 HU2206'1 FT (0.3 M) SOUTHWEST FROM A WHITE PVC WITNESS PIPE, IN WOODS AND
 HU2206'GREENBRIERS.  THE FIELD ENTRANCE IS RATHER VAGUE BUT SOME HELP.  THE
 HU2206'DIRECTION FROM IT TO THE MARK IS NORTHWEST, NOT NORTH.  THE ROAD
 HU2206'DISTANCE CHECKED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2251 ***********************************************************************
 HU2251  DESIGNATION -  A 187
 HU2251  PID         -  HU2251
 HU2251  STATE/COUNTY-  MD/WICOMICO
 HU2251  COUNTRY     -  US
 HU2251  USGS QUAD   -  WETIPQUIN (2016)
 HU2251
 HU2251                         *CURRENT SURVEY CONTROL
 HU2251  ______________________________________________________________________
 HU2251* NAD 83(1986) POSITION- 38 21 20.3    (N) 075 50 09.0    (W)   HD_HELD2
 HU2251* NAVD 88 ORTHO HEIGHT -     5.143 (meters)       16.87  (feet) ADJUSTED
 HU2251  ______________________________________________________________________
 HU2251  GEOID HEIGHT    -        -35.659 (meters)                     GEOID18
 HU2251  DYNAMIC HEIGHT  -          5.140 (meters)       16.86  (feet) COMP
 HU2251  MODELED GRAVITY -    980,002.8   (mgal)                       NAVD 88
 HU2251
 HU2251  VERT ORDER      -  SECOND    CLASS I
 HU2251
 HU2251.The horizontal coordinates were established by autonomous hand held GPS
 HU2251.observations and have an estimated accuracy of +/- 10 meters.
 HU2251
 HU2251.The orthometric height was determined by differential leveling and
 HU2251.adjusted by the NATIONAL GEODETIC SURVEY
 HU2251.in June 1991.
 HU2251
 HU2251.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2251.GEOID18 height accuracy estimate available here.
 HU2251
 HU2251.Click photographs - Photos may exist for this station.
 HU2251
 HU2251.The dynamic height is computed by dividing the NAVD 88
 HU2251.geopotential number by the normal gravity value computed on the
 HU2251.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2251.degrees latitude (g = 980.6199 gals.).
 HU2251
 HU2251.The modeled gravity was interpolated from observed gravity values.
 HU2251
 HU2251;                    North         East    Units  Estimated Accuracy
 HU2251;SPC MD       -    77,128.      501,752.      MT  (+/- 10 meters HH2 GPS)
 HU2251
 HU2251_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2697145605(NAD 83)
 HU2251
 HU2251                          SUPERSEDED SURVEY CONTROL
 HU2251
 HU2251  NGVD 29 (06/12/91)    5.397  (m)           17.71   (f) ADJUSTED    2 1
 HU2251
 HU2251.Superseded values are not recommended for survey control.
 HU2251
 HU2251.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2251.See file dsdata.pdf to determine how the superseded data were derived.
 HU2251
 HU2251_MARKER: F = FLANGE-ENCASED ROD
 HU2251_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2251_STAMPING: A 187 1990
 HU2251_MARK LOGO: NGS
 HU2251_PROJECTION: RECESSED 24 CENTIMETERS
 HU2251_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2251_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2251_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2251+SATELLITE: SATELLITE OBSERVATIONS - May 15, 2019
 HU2251_ROD/PIPE-DEPTH: 13.2 meters
 HU2251_SLEEVE-DEPTH  : 0.9 meters
 HU2251
 HU2251  HISTORY     - Date     Condition        Report By
 HU2251  HISTORY     - 1990     MONUMENTED       NGS
 HU2251  HISTORY     - 20190515 GOOD             PROFLN
 HU2251
 HU2251                          STATION DESCRIPTION
 HU2251
 HU2251'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2251'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2251'OFFICE IN QUANTICO, THENCE 5.0 KM (3.11 MI) WESTERLY ALONG STATE
 HU2251'HIGHWAY 349, THENCE 4.3 KM (2.67 MI) NORTHWESTERLY ALONG ROYAL OAK
 HU2251'ROAD, 21.4 M (70.21 FT) EAST OF UTILITY POLE NUMBER Y220, 10.4 M
 HU2251'(34.12 FT) SOUTHWEST OF THE CENTER OF A DRIVE LEADING EAST INTO A
 HU2251'WOODED AREA, 4.6 M (15.09 FT) SOUTHEAST OF AND LEVEL WITH THE ROAD
 HU2251'CENTER, AND 0.3 M (0.98 FT) NORTHWEST OF A WITNESS POST.
 HU2251'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2251
 HU2251                          STATION RECOVERY (2019)
 HU2251
 HU2251'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2251'THE MARK IS ROUGHLY 30 FT (9.1 M) NORTHEAST OF A POINT OPPOSITE THE
 HU2251'CENTER OF A DOUBLE STEEL GATE ACROSS THE ROAD, 29 FT (8.8 M) SOUTHWEST
 HU2251'OF THE CENTER OF A STEEL GATE, 15.5 FT (4.7 M) SOUTHEAST OF THE ROAD,
 HU2251'12 FT (3.7 M) SOUTHWEST OF THE MOST SW WOODEN FENCE POST OF A STEEL
 HU2251'GATE, 12 FT (3.7 M) SOUTHWEST OF A POINT OPPOSITE POLE 712 59 141.
 HU2251'THE LOGO CAP IS RECESSED 0.5 FT (15 CM), LEFT EXPOSED, DATUM POINT 0.3
 HU2251'FT (9 CM) BELOW CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2397 ***********************************************************************
 HU2397  DESIGNATION -  A 188
 HU2397  PID         -  HU2397
 HU2397  STATE/COUNTY-  MD/WICOMICO
 HU2397  COUNTRY     -  US
 HU2397  USGS QUAD   -  DELMAR (2016)
 HU2397
 HU2397                         *CURRENT SURVEY CONTROL
 HU2397  ______________________________________________________________________
 HU2397* NAD 83(1986) POSITION- 38 24 01.     (N) 075 31 58.     (W)   SCALED
 HU2397* NAVD 88 ORTHO HEIGHT -    13.495 (meters)       44.27  (feet) ADJUSTED
 HU2397  ______________________________________________________________________
 HU2397  GEOID HEIGHT    -        -35.812 (meters)                     GEOID18
 HU2397  DYNAMIC HEIGHT  -         13.486 (meters)       44.25  (feet) COMP
 HU2397  MODELED GRAVITY -    980,008.4   (mgal)                       NAVD 88
 HU2397
 HU2397  VERT ORDER      -  SECOND    CLASS I
 HU2397
 HU2397.The horizontal coordinates were scaled from a map and have
 HU2397.an estimated accuracy of +/- 6 seconds.
 HU2397
 HU2397.The orthometric height was determined by differential leveling and
 HU2397.adjusted by the NATIONAL GEODETIC SURVEY
 HU2397.in June 1991.
 HU2397
 HU2397.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2397.GEOID18 height accuracy estimate available here.
 HU2397
 HU2397.Click photographs - Photos may exist for this station.
 HU2397
 HU2397.The dynamic height is computed by dividing the NAVD 88
 HU2397.geopotential number by the normal gravity value computed on the
 HU2397.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2397.degrees latitude (g = 980.6199 gals.).
 HU2397
 HU2397.The modeled gravity was interpolated from observed gravity values.
 HU2397
 HU2397;                    North         East    Units  Estimated Accuracy
 HU2397;SPC MD       -    82,460.      528,160.      MT  (+/- 180 meters Scaled)
 HU2397
 HU2397_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH534503(NAD 83)
 HU2397
 HU2397                          SUPERSEDED SURVEY CONTROL
 HU2397
 HU2397  NGVD 29 (06/12/91)   13.748  (m)           45.10   (f) ADJUSTED    2 1
 HU2397
 HU2397.Superseded values are not recommended for survey control.
 HU2397
 HU2397.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2397.See file dsdata.pdf to determine how the superseded data were derived.
 HU2397
 HU2397_MARKER: I = METAL ROD
 HU2397_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2397_STAMPING: A 188 1990
 HU2397_MARK LOGO: NGS
 HU2397_PROJECTION: RECESSED 3 CENTIMETERS
 HU2397_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2397_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2397_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2397+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2397_ROD/PIPE-DEPTH: 21.8 meters
 HU2397_SLEEVE-DEPTH  : 0.9 meters
 HU2397
 HU2397  HISTORY     - Date     Condition        Report By
 HU2397  HISTORY     - 1990     MONUMENTED       NGS
 HU2397
 HU2397                          STATION DESCRIPTION
 HU2397
 HU2397'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2397'3.8 KM (2.36 MI) EASTERLY ALONG ZION ROAD FROM THE JUNCTION OF U.S.
 HU2397'HIGHWAY 13 BUSINESS IN SALISBURY, 95.4 M (312.99 FT) NORTHEAST OF THE
 HU2397'CENTER OF ZION CHURCH ROAD, 44.8 M (146.98 FT) NORTHEAST OF UTILITY
 HU2397'POLE NUMBER 58, 17.7 M (58.07 FT) SOUTHWEST OF THE CENTER OF A
 HU2397'DRIVEWAY, 10.0 M (32.81 FT) SOUTH-SOUTHEAST OF AND LEVEL WITH THE
 HU2397'CENTERLINE OF THE ROAD, 2.2 M (7.22 FT) NORTHWEST OF A FENCE CORNER,
 HU2397'AND 1.1 M (3.61 FT) NORTH-NORTHWEST OF A CHAIN-LINK FENCE.
 HU2397'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2433 ***********************************************************************
 HU2433  DESIGNATION -  A 189
 HU2433  PID         -  HU2433
 HU2433  STATE/COUNTY-  MD/WICOMICO
 HU2433  COUNTRY     -  US
 HU2433  USGS QUAD   -  PITTSVILLE (2016)
 HU2433
 HU2433                         *CURRENT SURVEY CONTROL
 HU2433  ______________________________________________________________________
 HU2433* NAD 83(1986) POSITION- 38 26 42.07   (N) 075 23 41.31   (W)   HD_HELD1
 HU2433* NAVD 88 ORTHO HEIGHT -    14.412 (meters)       47.28  (feet) ADJUSTED
 HU2433  ______________________________________________________________________
 HU2433  GEOID HEIGHT    -        -35.836 (meters)                     GEOID18
 HU2433  DYNAMIC HEIGHT  -         14.403 (meters)       47.25  (feet) COMP
 HU2433  MODELED GRAVITY -    980,012.4   (mgal)                       NAVD 88
 HU2433
 HU2433  VERT ORDER      -  SECOND    CLASS I
 HU2433
 HU2433.The horizontal coordinates were determined by differentially corrected
 HU2433.hand held GPS observations or other comparable positioning techniques
 HU2433.and have an estimated accuracy of +/- 3 meters.
 HU2433
 HU2433.The orthometric height was determined by differential leveling and
 HU2433.adjusted by the NATIONAL GEODETIC SURVEY
 HU2433.in June 1991.
 HU2433
 HU2433.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2433.GEOID18 height accuracy estimate available here.
 HU2433
 HU2433.Click photographs - Photos may exist for this station.
 HU2433
 HU2433.The dynamic height is computed by dividing the NAVD 88
 HU2433.geopotential number by the normal gravity value computed on the
 HU2433.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2433.degrees latitude (g = 980.6199 gals.).
 HU2433
 HU2433.The modeled gravity was interpolated from observed gravity values.
 HU2433
 HU2433;                    North         East    Units  Estimated Accuracy
 HU2433;SPC MD       -    87,632.3     540,121.4     MT  (+/- 3 meters HH1 GPS) 
 HU2433
 HU2433_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6554755266(NAD 83)
 HU2433
 HU2433                          SUPERSEDED SURVEY CONTROL
 HU2433
 HU2433  NGVD 29 (06/12/91)   14.658  (m)           48.09   (f) ADJUSTED    2 1
 HU2433
 HU2433.Superseded values are not recommended for survey control.
 HU2433
 HU2433.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2433.See file dsdata.pdf to determine how the superseded data were derived.
 HU2433
 HU2433_MARKER: I = METAL ROD
 HU2433_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2433_STAMPING: A 189 1990
 HU2433_MARK LOGO: NGS
 HU2433_PROJECTION: RECESSED 2 CENTIMETERS
 HU2433_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2433_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2433_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2433+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2433_ROD/PIPE-DEPTH: 18.2 meters
 HU2433_SLEEVE-DEPTH  : 0.9 meters
 HU2433
 HU2433  HISTORY     - Date     Condition        Report By
 HU2433  HISTORY     - 1990     MONUMENTED       NGS
 HU2433
 HU2433                          STATION DESCRIPTION
 HU2433
 HU2433'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2433'6.5 KM (4.04 MI) NORTHEASTERLY ALONG STATE HIGHWAY 353 (PITTSVILLE
 HU2433'DELAWARE LINE ROAD) FROM THE JUNCTION OF STATE HIGHWAY 346 (OCEAN
 HU2433'CITY ROAD) IN PITTSVILLE, 23.6 M (77.43 FT) SOUTH OF THE SOUTHWEST
 HU2433'CORNER OF A HOUSE, 8.0 M (26.25 FT) SOUTH OF THE CENTER OF A DRIVEWAY
 HU2433', 7.4 M (24.28 FT) EAST OF AND LEVEL WITH THE HIGHWAY CENTERLINE, AND
 HU2433'6.6 M (21.65 FT) NORTH OF THE CENTER OF A DRIVEWAY.  NOTE--ACCESS TO
 HU2433'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2433'PROPERTY OWNED BY MR. JOHN B. PARKER, RT. 1 BOX 288, PITTSVILLE, MD
 HU2433'21850, TELEPHONE NUMBER (301) 835-8037.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2445 ***********************************************************************
 HU2445  DESIGNATION -  A 190
 HU2445  PID         -  HU2445
 HU2445  STATE/COUNTY-  MD/WICOMICO
 HU2445  COUNTRY     -  US
 HU2445  USGS QUAD   -  PITTSVILLE (2016)
 HU2445
 HU2445                         *CURRENT SURVEY CONTROL
 HU2445  ______________________________________________________________________
 HU2445* NAD 83(1986) POSITION- 38 22 36.     (N) 075 25 29.     (W)   SCALED
 HU2445* NAVD 88 ORTHO HEIGHT -    16.057 (meters)       52.68  (feet) ADJUSTED
 HU2445  ______________________________________________________________________
 HU2445  GEOID HEIGHT    -        -35.907 (meters)                     GEOID18
 HU2445  DYNAMIC HEIGHT  -         16.047 (meters)       52.65  (feet) COMP
 HU2445  MODELED GRAVITY -    980,006.2   (mgal)                       NAVD 88
 HU2445
 HU2445  VERT ORDER      -  SECOND    CLASS I
 HU2445
 HU2445.The horizontal coordinates were scaled from a map and have
 HU2445.an estimated accuracy of +/- 6 seconds.
 HU2445
 HU2445.The orthometric height was determined by differential leveling and
 HU2445.adjusted by the NATIONAL GEODETIC SURVEY
 HU2445.in June 1991.
 HU2445
 HU2445.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2445.GEOID18 height accuracy estimate available here.
 HU2445
 HU2445.Click photographs - Photos may exist for this station.
 HU2445
 HU2445.The dynamic height is computed by dividing the NAVD 88
 HU2445.geopotential number by the normal gravity value computed on the
 HU2445.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2445.degrees latitude (g = 980.6199 gals.).
 HU2445
 HU2445.The modeled gravity was interpolated from observed gravity values.
 HU2445
 HU2445;                    North         East    Units  Estimated Accuracy
 HU2445;SPC MD       -    80,000.      537,640.      MT  (+/- 180 meters Scaled)
 HU2445
 HU2445_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH629476(NAD 83)
 HU2445
 HU2445                          SUPERSEDED SURVEY CONTROL
 HU2445
 HU2445  NGVD 29 (06/12/91)   16.301  (m)           53.48   (f) ADJUSTED    2 1
 HU2445
 HU2445.Superseded values are not recommended for survey control.
 HU2445
 HU2445.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2445.See file dsdata.pdf to determine how the superseded data were derived.
 HU2445
 HU2445_MARKER: I = METAL ROD
 HU2445_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2445_STAMPING: A 190 1990
 HU2445_MARK LOGO: NGS
 HU2445_PROJECTION: FLUSH
 HU2445_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2445_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2445_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2445+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2445_ROD/PIPE-DEPTH: 20.7 meters
 HU2445_SLEEVE-DEPTH  : 0.9 meters
 HU2445
 HU2445  HISTORY     - Date     Condition        Report By
 HU2445  HISTORY     - 1990     MONUMENTED       NGS
 HU2445
 HU2445                          STATION DESCRIPTION
 HU2445
 HU2445'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2445'1.7 KM (1.06 MI) SOUTHWESTERLY ALONG SIXTY FOOT ROAD FROM THE JUNCTION
 HU2445'OF STATE HIGHWAY 346 (OCEAN CITY ROAD) IN PITTSVILLE, 20.3 M
 HU2445'(66.60 FT) NORTH-NORTHEAST OF THE CENTER OF A DRIVEWAY, 9.8 M
 HU2445'(32.15 FT) EAST-SOUTHEAST OF AND LEVEL WITH THE ROAD CENTERLINE, 3.4
 HU2445'M (11.15 FT) SOUTH-SOUTHWEST OF THE CENTER OF A DRIVEWAY, AND 3.1 M
 HU2445'(10.17 FT) EAST-SOUTHEAST OF UTILITY POLE NUMBER 15.  NOTE--ACCESS TO
 HU2445'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2445'PROPERTY OWNED BY JOHN MALCOM, BOX 165 SIXTY FOOT ROAD, PITTSVILLE,
 HU2445'MD 21850, TELEPHONE NUMBER (301) 835-2389.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2394 ***********************************************************************
 HU2394  DESIGNATION -  A 191
 HU2394  PID         -  HU2394
 HU2394  STATE/COUNTY-  MD/WICOMICO
 HU2394  COUNTRY     -  US
 HU2394  USGS QUAD   -  WANGO (2016)
 HU2394
 HU2394                         *CURRENT SURVEY CONTROL
 HU2394  ______________________________________________________________________
 HU2394* NAD 83(1986) POSITION- 38 18 52.     (N) 075 22 34.     (W)   SCALED
 HU2394* NAVD 88 ORTHO HEIGHT -     9.263 (meters)       30.39  (feet) ADJUSTED
 HU2394  ______________________________________________________________________
 HU2394  GEOID HEIGHT    -        -36.010 (meters)                     GEOID18
 HU2394  DYNAMIC HEIGHT  -          9.257 (meters)       30.37  (feet) COMP
 HU2394  MODELED GRAVITY -    980,000.6   (mgal)                       NAVD 88
 HU2394
 HU2394  VERT ORDER      -  SECOND    CLASS I
 HU2394
 HU2394.The horizontal coordinates were scaled from a map and have
 HU2394.an estimated accuracy of +/- 6 seconds.
 HU2394
 HU2394.The orthometric height was determined by differential leveling and
 HU2394.adjusted by the NATIONAL GEODETIC SURVEY
 HU2394.in June 1991.
 HU2394
 HU2394.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2394.GEOID18 height accuracy estimate available here.
 HU2394
 HU2394.Click photographs - Photos may exist for this station.
 HU2394
 HU2394.The dynamic height is computed by dividing the NAVD 88
 HU2394.geopotential number by the normal gravity value computed on the
 HU2394.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2394.degrees latitude (g = 980.6199 gals.).
 HU2394
 HU2394.The modeled gravity was interpolated from observed gravity values.
 HU2394
 HU2394;                    North         East    Units  Estimated Accuracy
 HU2394;SPC MD       -    73,170.      542,010.      MT  (+/- 180 meters Scaled)
 HU2394
 HU2394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH671407(NAD 83)
 HU2394
 HU2394                          SUPERSEDED SURVEY CONTROL
 HU2394
 HU2394  NGVD 29 (06/12/91)    9.512  (m)           31.21   (f) ADJUSTED    2 1
 HU2394
 HU2394.Superseded values are not recommended for survey control.
 HU2394
 HU2394.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2394.See file dsdata.pdf to determine how the superseded data were derived.
 HU2394
 HU2394_MARKER: I = METAL ROD
 HU2394_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2394_STAMPING: A 191 1990
 HU2394_MARK LOGO: NGS
 HU2394_PROJECTION: RECESSED 2 CENTIMETERS
 HU2394_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2394_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2394_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2394+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2394_ROD/PIPE-DEPTH: 21.8 meters
 HU2394_SLEEVE-DEPTH  : 0.9 meters
 HU2394
 HU2394  HISTORY     - Date     Condition        Report By
 HU2394  HISTORY     - 1990     MONUMENTED       NGS
 HU2394  HISTORY     - 20000619 GOOD             GEOMET
 HU2394
 HU2394                          STATION DESCRIPTION
 HU2394
 HU2394'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2394'1.7 KM (1.06 MI) SOUTHERLY ALONG STATE HIGHWAY 354 (WILLARDS WHITON
 HU2394'ROAD) FROM THE JUNCTION OF STATE HIGHWAY 350 (MOUNT HERMON ROAD) IN
 HU2394'POWELLVILLE, 22.1 M (72.51 FT) SOUTH-SOUTHWEST OF THE SOUTHWEST
 HU2394'CORNER OF A HOUSE, 7.4 M (24.28 FT) EAST OF AND LEVEL WITH THE
 HU2394'CENTERLINE OF THE HIGHWAY, 4.3 M (14.11 FT) SOUTH OF A FENCE CORNER,
 HU2394'1.3 M (4.27 FT) WEST OF UTILITY POLE NUMBER 53226 91257, AND 0.4 M
 HU2394'(1.31 FT) WEST OF A WITNESS POST AND FENCE.  NOTE--ACCESS TO THE
 HU2394'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2394
 HU2394                          STATION RECOVERY (2000)
 HU2394
 HU2394'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HU2394'GOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6487 ***********************************************************************
 JV6487  DESIGNATION -  A 192
 JV6487  PID         -  JV6487
 JV6487  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6487  COUNTRY     -  US
 JV6487  USGS QUAD   -  LAUREL (2016)
 JV6487
 JV6487                         *CURRENT SURVEY CONTROL
 JV6487  ______________________________________________________________________
 JV6487* NAD 83(1986) POSITION- 39 01 56.     (N) 076 52 09.     (W)   SCALED
 JV6487* NAVD 88 ORTHO HEIGHT -    34.172 (meters)      112.11  (feet) ADJUSTED
 JV6487  ______________________________________________________________________
 JV6487  GEOID HEIGHT    -        -32.255 (meters)                     GEOID18
 JV6487  DYNAMIC HEIGHT  -         34.154 (meters)      112.05  (feet) COMP
 JV6487  MODELED GRAVITY -    980,095.3   (mgal)                       NAVD 88
 JV6487
 JV6487  VERT ORDER      -  SECOND    CLASS II
 JV6487
 JV6487.The horizontal coordinates were scaled from a map and have
 JV6487.an estimated accuracy of +/- 6 seconds.
 JV6487
 JV6487.The orthometric height was determined by differential leveling and
 JV6487.adjusted by the NATIONAL GEODETIC SURVEY
 JV6487.in June 1991.
 JV6487
 JV6487.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6487.GEOID18 height accuracy estimate available here.
 JV6487
 JV6487.Click photographs - Photos may exist for this station.
 JV6487
 JV6487.The dynamic height is computed by dividing the NAVD 88
 JV6487.geopotential number by the normal gravity value computed on the
 JV6487.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6487.degrees latitude (g = 980.6199 gals.).
 JV6487
 JV6487.The modeled gravity was interpolated from observed gravity values.
 JV6487
 JV6487;                    North         East    Units  Estimated Accuracy
 JV6487;SPC MD       -   151,590.      411,330.      MT  (+/- 180 meters Scaled)
 JV6487
 JV6487_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ382220(NAD 83)
 JV6487
 JV6487                          SUPERSEDED SURVEY CONTROL
 JV6487
 JV6487.No superseded survey control is available for this station.
 JV6487
 JV6487_MARKER: DV = VERTICAL CONTROL DISK
 JV6487_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6487_SP_SET: HEADWALL
 JV6487_STAMPING: A 192 1990
 JV6487_MARK LOGO: NGS
 JV6487_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6487_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6487+STABILITY: SURFACE MOTION
 JV6487_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6487+SATELLITE: SATELLITE OBSERVATIONS - 1990
 JV6487
 JV6487  HISTORY     - Date     Condition        Report By
 JV6487  HISTORY     - 1990     MONUMENTED       NGS
 JV6487
 JV6487                          STATION DESCRIPTION
 JV6487
 JV6487'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JV6487'3.6 KM (2.2 MI) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION OF
 JV6487'U.S. HIGHWAY 1 IN BELTSVILLE, 0.2 KM (0.1 MI) WEST OF THE
 JV6487'INTERSECTION OF BIOCONTROL ROAD, IN TOP OF AND 0.5 M (1.6 FT) EAST OF
 JV6487'THE WEST END OF THE SOUTH CONCRETE HEADWALL OF A BRIDGE SPANNING A
 JV6487'CREEK, 5.4 M (17.7 FT) SOUTH OF AND LEVEL WITH THE ROAD CENTERLINE,
 JV6487'AND 0.2 M (0.7 FT) NORTH OF THE NORTH EDGE OF THE BRIDGE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8929 ***********************************************************************
 HV8929  DESIGNATION -  A 194
 HV8929  PID         -  HV8929
 HV8929  STATE/COUNTY-  MD/CHARLES
 HV8929  COUNTRY     -  US
 HV8929  USGS QUAD   -  PORT TOBACCO (2016)
 HV8929
 HV8929                         *CURRENT SURVEY CONTROL
 HV8929  ______________________________________________________________________
 HV8929* NAD 83(1986) POSITION- 38 35 03.     (N) 077 07 07.     (W)   SCALED
 HV8929* NAVD 88 ORTHO HEIGHT -     1.591 (meters)        5.22  (feet) ADJUSTED
 HV8929  ______________________________________________________________________
 HV8929  GEOID HEIGHT    -        -32.596 (meters)                     GEOID18
 HV8929  DYNAMIC HEIGHT  -          1.590 (meters)        5.22  (feet) COMP
 HV8929  MODELED GRAVITY -    980,050.6   (mgal)                       NAVD 88
 HV8929
 HV8929  VERT ORDER      -  SECOND    CLASS I
 HV8929
 HV8929.The horizontal coordinates were scaled from a map and have
 HV8929.an estimated accuracy of +/- 6 seconds.
 HV8929
 HV8929.The orthometric height was determined by differential leveling and
 HV8929.adjusted by the NATIONAL GEODETIC SURVEY
 HV8929.in August 1994.
 HV8929
 HV8929.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8929.GEOID18 height accuracy estimate available here.
 HV8929
 HV8929.Click photographs - Photos may exist for this station.
 HV8929
 HV8929.The dynamic height is computed by dividing the NAVD 88
 HV8929.geopotential number by the normal gravity value computed on the
 HV8929.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8929.degrees latitude (g = 980.6199 gals.).
 HV8929
 HV8929.The modeled gravity was interpolated from observed gravity values.
 HV8929
 HV8929;                    North         East    Units  Estimated Accuracy
 HV8929;SPC MD       -   101,850.      389,670.      MT  (+/- 180 meters Scaled)
 HV8929
 HV8929_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH154727(NAD 83)
 HV8929
 HV8929                          SUPERSEDED SURVEY CONTROL
 HV8929
 HV8929.No superseded survey control is available for this station.
 HV8929
 HV8929_MARKER: DV = VERTICAL CONTROL DISK
 HV8929_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV8929+WITH SETTING: PAVEMENT
 HV8929_SP_SET: HEADWALL
 HV8929_STAMPING: A 194 1990
 HV8929_MARK LOGO: NGS
 HV8929_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8929_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8929+STABILITY: SURFACE MOTION
 HV8929_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8929+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8929
 HV8929  HISTORY     - Date     Condition        Report By
 HV8929  HISTORY     - 1990     MONUMENTED       NGS
 HV8929
 HV8929                          STATION DESCRIPTION
 HV8929
 HV8929'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8929'AT THE INTERSECTION OF STATE HIGHWAYS 224 AND 225 WHICH IS AT THE
 HV8929'SMALL VILLAGE OF MASON SPRINGS, 16.46 M (54.00 FT) NORTH OF THE
 HV8929'CENTER OF STATE HIGHWAY 224, 15.24 M (50.00 FT) EAST OF THE CENTER OF
 HV8929'STATE HIGHWAY 225 AND IN THE WEST END OF THE CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2577 ***********************************************************************
 HU2577  DESIGNATION -  A 195
 HU2577  PID         -  HU2577
 HU2577  STATE/COUNTY-  MD/SOMERSET
 HU2577  COUNTRY     -  US
 HU2577  USGS QUAD   -  PRINCESS ANNE (2016)
 HU2577
 HU2577                         *CURRENT SURVEY CONTROL
 HU2577  ______________________________________________________________________
 HU2577* NAD 83(1986) POSITION- 38 08 46.1    (N) 075 41 50.3    (W)   HD_HELD2
 HU2577* NAVD 88 ORTHO HEIGHT -     4.657 (meters)       15.28  (feet) ADJUSTED
 HU2577  ______________________________________________________________________
 HU2577  GEOID HEIGHT    -        -36.067 (meters)                     GEOID18
 HU2577  DYNAMIC HEIGHT  -          4.654 (meters)       15.27  (feet) COMP
 HU2577  MODELED GRAVITY -    979,982.5   (mgal)                       NAVD 88
 HU2577
 HU2577  VERT ORDER      -  SECOND    CLASS II
 HU2577
 HU2577.The horizontal coordinates were established by autonomous hand held GPS
 HU2577.observations and have an estimated accuracy of +/- 10 meters.
 HU2577
 HU2577.The orthometric height was determined by differential leveling and
 HU2577.adjusted by the NATIONAL GEODETIC SURVEY
 HU2577.in April 1995.
 HU2577
 HU2577.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2577.GEOID18 height accuracy estimate available here.
 HU2577
 HU2577.Click photographs - Photos may exist for this station.
 HU2577
 HU2577.The dynamic height is computed by dividing the NAVD 88
 HU2577.geopotential number by the normal gravity value computed on the
 HU2577.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2577.degrees latitude (g = 980.6199 gals.).
 HU2577
 HU2577.The modeled gravity was interpolated from observed gravity values.
 HU2577
 HU2577;                    North         East    Units  Estimated Accuracy
 HU2577;SPC MD       -    54,039.      514,191.      MT  (+/- 10 meters HH2 GPS)
 HU2577
 HU2577_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3889922259(NAD 83)
 HU2577
 HU2577                          SUPERSEDED SURVEY CONTROL
 HU2577
 HU2577.No superseded survey control is available for this station.
 HU2577
 HU2577_MARKER: DV = VERTICAL CONTROL DISK
 HU2577_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2577_STAMPING: A 195 1990
 HU2577_MARK LOGO: NGS
 HU2577_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2577_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2577+STABILITY: SURFACE MOTION
 HU2577_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2577+SATELLITE: SATELLITE OBSERVATIONS - October 25, 1990
 HU2577
 HU2577  HISTORY     - Date     Condition        Report By
 HU2577  HISTORY     - 1990     MONUMENTED       MDSHA
 HU2577  HISTORY     - 19901025 GOOD             NGS
 HU2577
 HU2577                          STATION DESCRIPTION
 HU2577
 HU2577'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HU2577'1.23 KM (0.76 MI) NORTH ALONG U.S. HIGHWAY 13 FROM THE JUNCTION OF
 HU2577'STATE HIGHWAY 413 AT WESTOVER, 524.7 FT (159.9 M) NORTHEAST OF THE
 HU2577'NORTHEAST END OF A PIPE CULVERT, 35.6 FT (10.9 M) SOUTHEAST OF THE
 HU2577'CENTERLINE OF THE NORTH BOUND LANES OF THE HIGHWAY, 21.9 FT (6.7 M)
 HU2577'WEST OF THE MOST WESTERLY POST OF A BILLBOARD, 7.1 FT (2.2 M)
 HU2577'WEST-NORTHWEST OF A WITNESS POST, SET IN THE TOP OF A 1.0 FT (0.3 M)
 HU2577'ROUND CONCRETE POST FLUSH WITH THE GROUND.  THE MARK IS ON ROAD
 HU2577'RIGHT-OF-WAY.
 HU2577
 HU2577                          STATION RECOVERY (1990)
 HU2577
 HU2577'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU2577'6.8 KM (4.2 MI) SOUTHERLY ALONG U.S. HIGHWAY 13 FROM THE JUNCTION OF
 HU2577'STATE HIGHWAY 363 IN PRINCESS ANNE, 10.8 M (35.4 FT) EAST OF THE
 HU2577'CENTERLINE OF THE NORTHBOUND LANES OF THE HIGHWAY, 2.1 M (6.9 FT)
 HU2577'WEST OF A WITNESS POST, 0.3 M (1.0 FT) BELOW THE LEVEL OF THE HIGHWAY,
 HU2577'AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4387 ***********************************************************************
 JU4387  DESIGNATION -  A 196
 JU4387  PID         -  JU4387
 JU4387  STATE/COUNTY-  MD/QUEEN ANNES
 JU4387  COUNTRY     -  US
 JU4387  USGS QUAD   -  CHURCH HILL (2017)
 JU4387
 JU4387                         *CURRENT SURVEY CONTROL
 JU4387  ______________________________________________________________________
 JU4387* NAD 83(2011) POSITION- 39 09 40.90861(N) 075 55 10.99046(W)   ADJUSTED
 JU4387* NAD 83(2011) ELLIP HT-   -12.194 (meters)        (06/27/12)   ADJUSTED
 JU4387* NAD 83(2011) EPOCH   -  2010.00
 JU4387* NAVD 88 ORTHO HEIGHT -    21.535 (meters)       70.65  (feet) ADJUSTED
 JU4387  ______________________________________________________________________
 JU4387  GEOID HEIGHT    -        -33.719 (meters)                     GEOID18
 JU4387  NAD 83(2011) X  -  1,204,734.460 (meters)                     COMP
 JU4387  NAD 83(2011) Y  - -4,803,244.987 (meters)                     COMP
 JU4387  NAD 83(2011) Z  -  4,006,215.295 (meters)                     COMP
 JU4387  LAPLACE CORR    -         -3.29  (seconds)                    DEFLEC18
 JU4387  DYNAMIC HEIGHT  -         21.523 (meters)       70.61  (feet) COMP
 JU4387  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 JU4387
 JU4387  VERT ORDER      -  SECOND    CLASS I
 JU4387
 JU4387  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4387  Standards:
 JU4387         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4387            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4387  -------------------------------------------------------------------
 JU4387  NETWORK    2.69   3.90           0.96   1.21   1.99     -0.08019789
 JU4387  -------------------------------------------------------------------
 JU4387  Click here for local accuracies and other accuracy information.
 JU4387
 JU4387.The horizontal coordinates were established by GPS observations
 JU4387.and adjusted by the National Geodetic Survey in June 2012.
 JU4387
 JU4387.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4387.been affixed to the stable North American tectonic plate. See 
 JU4387.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4387
 JU4387.The horizontal coordinates are valid at the epoch date displayed above
 JU4387.which is a decimal equivalence of Year/Month/Day.
 JU4387
 JU4387.The orthometric height was determined by differential leveling and
 JU4387.adjusted by the NATIONAL GEODETIC SURVEY
 JU4387.in July 1996.
 JU4387
 JU4387.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4387.GEOID18 height accuracy estimate available here.
 JU4387
 JU4387.Click photographs - Photos may exist for this station.
 JU4387
 JU4387.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4387
 JU4387.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4387
 JU4387.The ellipsoidal height was determined by GPS observations
 JU4387.and is referenced to NAD 83.
 JU4387
 JU4387.The dynamic height is computed by dividing the NAVD 88
 JU4387.geopotential number by the normal gravity value computed on the
 JU4387.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4387.degrees latitude (g = 980.6199 gals.).
 JU4387
 JU4387.The modeled gravity was interpolated from observed gravity values.
 JU4387
 JU4387. The following values were computed from the NAD 83(2011) position.
 JU4387
 JU4387;                    North         East     Units Scale Factor Converg.
 JU4387;SPC MD       -   166,471.941   493,362.175   MT  0.99996223   +0 40 40.9
 JU4387;SPC MD       -   546,166.69  1,618,639.07   sFT  0.99996223   +0 40 40.9
 JU4387;UTM  18      - 4,335,086.274   420,540.380   MT  0.99967774   -0 34 51.0
 JU4387
 JU4387!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4387!SPC MD       -   1.00000191  x   0.99996223  =   0.99996414
 JU4387!UTM  18      -   1.00000191  x   0.99967774  =   0.99967965
 JU4387
 JU4387_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2054035086(NAD 83)
 JU4387
 JU4387                          SUPERSEDED SURVEY CONTROL
 JU4387
 JU4387  NAD 83(2007)-  39 09 40.90881(N)    075 55 10.99119(W) AD(2002.00) 1
 JU4387  ELLIP H (04/02/09)  -12.165  (m)                       GP(2002.00) 4 1
 JU4387  NAD 83(1991)-  39 09 40.90885(N)    075 55 10.99135(W) AD(       ) 1
 JU4387  ELLIP H (10/15/07)  -12.161  (m)                       GP(       ) 4 1
 JU4387  NAVD 88              21.54   (m)           70.7    (f) LEVELING    3  
 JU4387
 JU4387.Superseded values are not recommended for survey control.
 JU4387
 JU4387.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4387.See file dsdata.pdf to determine how the superseded data were derived.
 JU4387
 JU4387_MARKER: DD = SURVEY DISK
 JU4387_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4387_STAMPING: A 196 1991
 JU4387_MARK LOGO: MDSHA
 JU4387_PROJECTION: RECESSED 5 CENTIMETERS
 JU4387_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4387_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4387+STABILITY: SURFACE MOTION
 JU4387_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4387+SATELLITE: SATELLITE OBSERVATIONS - February 22, 2013
 JU4387
 JU4387  HISTORY     - Date     Condition        Report By
 JU4387  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4387  HISTORY     - 20020301 GOOD             USPSQD
 JU4387  HISTORY     - 20020626 GOOD             MDSHA
 JU4387  HISTORY     - 20080422 GOOD             NGS
 JU4387  HISTORY     - 20130222 GOOD             ARCSHE
 JU4387  HISTORY     - 20180512 POOR             INDIV
 JU4387
 JU4387                          STATION DESCRIPTION
 JU4387
 JU4387'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4387'THE MARKER IS LOCATED ABOUT 2.25 MI (3.62 KM) SOUTHWEST OF DUDLEY
 JU4387'CORNERS, 3.75 MI (6.03 KM) NORTHEAST OF CHURCH HILL, 5.0 MI (8.0 KM)
 JU4387'NORTHEAST OF PRICE AND ALONG THE SOUTHEAST SIDE OF U.S. HIGHWAY 301.
 JU4387'IT IS ON ROAD RIGHT-OF-WAY.
 JU4387'
 JU4387'TO REACH FROM THE POST OFFICE IN PRICE, GO WEST ON STATE HIGHWAY 405
 JU4387'FOR 0.1 MI (0.2 KM) TO U.S. HIGHWAY 301.  TURN RIGHT AND GO NORTHERLY
 JU4387'ON U.S. HIGHWAY 301 FOR 4.9 MI (7.9 KM) TO THE MARKER ON THE RIGHT.
 JU4387'
 JU4387'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JU4387'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS
 JU4387'RECESSED 0.15 FT (0.05 M) BELOW THE SURFACE OF THE GROUND.  IT IS 56.5
 JU4387'FT (17.2 M) EAST OF THE CENTER OF THE NORTHBOUND LANE OF U.S. HIGHWAY
 JU4387'301, 95.5 FT (29.1 M) SOUTH OF THE END OF A GUARDRAIL, 4 FT (1.2 M)
 JU4387'WEST OF A WIRE FENCE, 13 FT (4.0 M) SOUTH OF THE SOUTHWEST CORNER A
 JU4387'BLUE STAR HIGHWAY MONUMENT, 3.3 FT (1.0 M) WEST OF A CARSONITE WITNESS
 JU4387'POST AND ABOUT 5.5 FT (1.7 M) LOWER THAN THE ROAD.
 JU4387
 JU4387                          STATION RECOVERY (2002)
 JU4387
 JU4387'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4387'REFERENCED HIGHWAY MONUMENT DOES NOT EXIST. MARK IS NOW 3 IN. BELOW
 JU4387'THE SURFACE.
 JU4387
 JU4387                          STATION RECOVERY (2002)
 JU4387
 JU4387'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 JU4387'THE MARK IS LOCATED AT A CLEARING BETWEEN TWO SETS OF WOODS.
 JU4387
 JU4387                          STATION RECOVERY (2008)
 JU4387
 JU4387'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JU4387'RECOVERED IN GOOD CONDITION.
 JU4387
 JU4387                          STATION RECOVERY (2013)
 JU4387
 JU4387'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU4387'RECOVERED IN GOOD CONDITION.
 JU4387
 JU4387                          STATION RECOVERY (2018)
 JU4387
 JU4387'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2018 (WAC)
 JU4387'CONTROL MONUMENT HAS BEEN PLOWED UP BY NEIGHBORING FARM OPERATIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6912 ***********************************************************************
 JV6912  DESIGNATION -  A 197
 JV6912  PID         -  JV6912
 JV6912  STATE/COUNTY-  MD/C OF BALTIMORE
 JV6912  COUNTRY     -  US
 JV6912  USGS QUAD   -  BALTIMORE EAST (2016)
 JV6912
 JV6912                         *CURRENT SURVEY CONTROL
 JV6912  ______________________________________________________________________
 JV6912* NAD 83(1986) POSITION- 39 16 38.     (N) 076 33 43.     (W)   SCALED
 JV6912* NAVD 88 ORTHO HEIGHT -     9.838 (meters)       32.28  (feet) ADJUSTED
 JV6912  ______________________________________________________________________
 JV6912  GEOID HEIGHT    -        -32.869 (meters)                     GEOID18
 JV6912  DYNAMIC HEIGHT  -          9.833 (meters)       32.26  (feet) COMP
 JV6912  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV6912
 JV6912  VERT ORDER      -  SECOND    CLASS I
 JV6912
 JV6912.The horizontal coordinates were scaled from a map and have
 JV6912.an estimated accuracy of +/- 6 seconds.
 JV6912
 JV6912.The orthometric height was determined by differential leveling and
 JV6912.adjusted by the NATIONAL GEODETIC SURVEY
 JV6912.in June 1995.
 JV6912
 JV6912.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6912.GEOID18 height accuracy estimate available here.
 JV6912
 JV6912.Click photographs - Photos may exist for this station.
 JV6912
 JV6912.The dynamic height is computed by dividing the NAVD 88
 JV6912.geopotential number by the normal gravity value computed on the
 JV6912.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6912.degrees latitude (g = 980.6199 gals.).
 JV6912
 JV6912.The modeled gravity was interpolated from observed gravity values.
 JV6912
 JV6912;                    North         East    Units  Estimated Accuracy
 JV6912;SPC MD       -   178,870.      437,800.      MT  (+/- 180 meters Scaled)
 JV6912
 JV6912_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ652487(NAD 83)
 JV6912
 JV6912                          SUPERSEDED SURVEY CONTROL
 JV6912
 JV6912.No superseded survey control is available for this station.
 JV6912
 JV6912_MARKER: DD = SURVEY DISK
 JV6912_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6912_STAMPING: A 197 1991
 JV6912_MARK LOGO: NONE
 JV6912_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6912_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6912+STABILITY: SURFACE MOTION
 JV6912_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6912+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2014
 JV6912
 JV6912  HISTORY     - Date     Condition        Report By
 JV6912  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6912  HISTORY     - 20140519 GOOD             USPSQD
 JV6912  HISTORY     - 20150604 POOR             GEOCAC
 JV6912
 JV6912                          STATION DESCRIPTION
 JV6912
 JV6912'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6912'THE MARKER IS LOCATED IN THE SOUTHEAST PART OF BALTIMORE, IN THE
 JV6912'NORTH PART OF CANTON YARD AND AT THE INTERSECTION OF BOSTON STREET
 JV6912'AND NORTH HAVEN STREET.  TO REACH FROM A POINT WHERE INTERSTATE
 JV6912'HIGHWAY 95 PASSES OVER INTERSTATE AVENUE, GO WEST ON INTERSTATE
 JV6912'AVENUE FOR 0.15 MI (0.24 KM) TO BOSTON STREET.  GO WEST ON BOSTON
 JV6912'STREET FOR 0.6 MI (1.0 KM) TO NORTH HAVEN STREET AND THE MARKER ON
 JV6912'THE RIGHT IN THE NORTHWEST ANGLE OF THE INTERSECTION, A ESSO STANDARD
 JV6912'OIL COMPANY DISK IN THE TOP OF A 0.7 FT (0.2 M) CONCRETE POST WHICH
 JV6912'IS FLUSH WITH THE SURFACE OF THE GROUND, 35 FT (10.7 M) NORTH OF THE
 JV6912'CENTER OF BOSTON STREET, 23.5 FT (7.2 M) WEST OF THE CENTER OF NORTH
 JV6912'HAVEN STREET, 5 FT (1.5 M) SOUTHEAST OF THE SOUTHEAST CORNER OF A 10
 JV6912'FT (3.0 M) HIGH CONCRETE WALL SURROUNDING EXXON OIL COMPANY STORAGE
 JV6912'TANKS, 76.5 FT (23.3 M) EAST OF A POWERLINE POLE NUMBERED 8588, 91 FT
 JV6912'(27.7 M) SOUTH OF A POWERLINE POLE NUMBERED 515171 AND ABOUT 0.5 FT
 JV6912'(0.2 M) HIGHER THAN THE ROAD.
 JV6912
 JV6912                          STATION RECOVERY (2014)
 JV6912
 JV6912'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV6912'RECOVERED IN GOOD CONDITION.
 JV6912
 JV6912                          STATION RECOVERY (2015)
 JV6912
 JV6912'RECOVERY NOTE BY GEOCACHING 2015 (BJT)
 JV6912'FOUND IN POOR CONDITION. DISK WAS RECENTLY KNOCKED OFF OF CONCRETE
 JV6912'MONUMENT AND FOUND LOOSE ON THE GROUND NEARBY.  THE STEM OF THEN
 JV6912'DISK REMAINS IN THE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4255 ***********************************************************************
 JU4255  DESIGNATION -  A 198
 JU4255  PID         -  JU4255
 JU4255  STATE/COUNTY-  MD/CECIL
 JU4255  COUNTRY     -  US
 JU4255  USGS QUAD   -  NEWARK WEST (2016)
 JU4255
 JU4255                         *CURRENT SURVEY CONTROL
 JU4255  ______________________________________________________________________
 JU4255* NAD 83(1986) POSITION- 39 38 31.58   (N) 075 52 27.53   (W)   HD_HELD1
 JU4255* NAVD 88 ORTHO HEIGHT -    52.059 (meters)      170.80  (feet) ADJUSTED
 JU4255  ______________________________________________________________________
 JU4255  GEOID HEIGHT    -        -33.102 (meters)                     GEOID18
 JU4255  DYNAMIC HEIGHT  -         52.033 (meters)      170.71  (feet) COMP
 JU4255  MODELED GRAVITY -    980,137.8   (mgal)                       NAVD 88
 JU4255
 JU4255  VERT ORDER      -  SECOND    CLASS I
 JU4255
 JU4255.The horizontal coordinates were determined by differentially corrected
 JU4255.hand held GPS observations or other comparable positioning techniques
 JU4255.and have an estimated accuracy of +/- 3 meters.
 JU4255
 JU4255.The orthometric height was determined by differential leveling and
 JU4255.adjusted by the NATIONAL GEODETIC SURVEY
 JU4255.in June 1995.
 JU4255
 JU4255.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4255.GEOID18 height accuracy estimate available here.
 JU4255
 JU4255.Click photographs - Photos may exist for this station.
 JU4255
 JU4255.The dynamic height is computed by dividing the NAVD 88
 JU4255.geopotential number by the normal gravity value computed on the
 JU4255.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4255.degrees latitude (g = 980.6199 gals.).
 JU4255
 JU4255.The modeled gravity was interpolated from observed gravity values.
 JU4255
 JU4255;                    North         East    Units  Estimated Accuracy
 JU4255;SPC MD       -   219,888.5     496,628.0     MT  (+/- 3 meters HH1 GPS) 
 JU4255
 JU4255_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2498088400(NAD 83)
 JU4255
 JU4255                          SUPERSEDED SURVEY CONTROL
 JU4255
 JU4255.No superseded survey control is available for this station.
 JU4255
 JU4255_MARKER: DD = SURVEY DISK
 JU4255_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JU4255_SP_SET: BRIDGE ABUTMENT
 JU4255_STAMPING: A 198 1991
 JU4255_MARK LOGO: MDSHA
 JU4255_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU4255_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU4255_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4255+SATELLITE: SATELLITE OBSERVATIONS - February 06, 2013
 JU4255
 JU4255  HISTORY     - Date     Condition        Report By
 JU4255  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4255  HISTORY     - 20130206 GOOD             INDIV
 JU4255
 JU4255                          STATION DESCRIPTION
 JU4255
 JU4255'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4255'THE MARKER IS LOCATED ABOUT 4.5 MI (7.2 KM) WEST OF THE
 JU4255'MARYLAND-DELAWARE STATE BOUNDARY, 4.25 MI (6.84 KM) NORTHEAST NORTH
 JU4255'OF THE VILLAGE OF NORTH EAST AND ALONG THE MOST SOUTHERLY SIDE OF THE
 JU4255'NORTHBOUND LANE OF INTERSTATE HIGHWAY 95.  IT IS ON INTERSTATE
 JU4255'HIGHWAY 95 RIGHT-OF-WAY.  TO REACH FROM THE INTERSECTION OF
 JU4255'INTERSTATE HIGHWAY 95 AND STATE HIGHWAY 222, GO NORTHEAST ON
 JU4255'INTERSTATE HIGHWAY 95 FOR 10.7 MI (17.2 KM) TO THE MARKER ON THE
 JU4255'RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK IN THE
 JU4255'SOUTHERLY CORNER OF THE MOST EAST ABUTMENT OF THE HIGHWAY BRIDGE FOR
 JU4255'THE NORTHBOUND LANE OF INTERSTATE HIGHWAY 95 WHERE IT CROSSES OVER A
 JU4255'RAILROAD TRACK.  IT IS 0.6 FT (0.2 M) NORTHEAST OF THE NORTHEAST EDGE
 JU4255'OF THE BASE OF THE CONCRETE BRIDGE WALL WHICH RUNS ALONG THE
 JU4255'SOUTHWEST SIDE OF THE HIGHWAY, 12.0 FT (3.7 M) SOUTHWEST OF THE
 JU4255'SOUTHWEST EDGE OF THE NORTHBOUND LANE OF INTERSTATE HIGHWAY 95, 11 FT
 JU4255'(3.4 M) NORTHWEST OF THE SOUTHEAST END OF THE CONCRETE BRIDGE WALL,
 JU4255'216 FT (65.8 M) NORTHHWEST OF A HIGHWAY MILE MARKER NUMBERED M375N
 JU4255'AND LEVEL WITH THE SURFACE OF INTERSTATE HIGHWAY 95.
 JU4255
 JU4255                          STATION RECOVERY (2013)
 JU4255
 JU4255'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (DRD)
 JU4255'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2779 ***********************************************************************
 HU2779  DESIGNATION -  A 199
 HU2779  PID         -  HU2779
 HU2779  STATE/COUNTY-  MD/WORCESTER
 HU2779  COUNTRY     -  US
 HU2779  USGS QUAD   -  OCEAN CITY (2016)
 HU2779
 HU2779                         *CURRENT SURVEY CONTROL
 HU2779  ______________________________________________________________________
 HU2779* NAD 83(2011) POSITION- 38 20 21.72740(N) 075 07 03.73186(W)   ADJUSTED
 HU2779* NAD 83(2011) ELLIP HT-   -33.340 (meters)        (03/04/17)   ADJUSTED
 HU2779* NAD 83(2011) EPOCH   -  2010.00
 HU2779* NAVD 88 ORTHO HEIGHT -     2.702 (meters)        8.86  (feet) ADJUSTED
 HU2779  ______________________________________________________________________
 HU2779  GEOID HEIGHT    -        -36.041 (meters)                     GEOID18
 HU2779  NAD 83(2011) X  -  1,286,514.182 (meters)                     COMP
 HU2779  NAD 83(2011) Y  - -4,841,094.903 (meters)                     COMP
 HU2779  NAD 83(2011) Z  -  3,935,038.655 (meters)                     COMP
 HU2779  LAPLACE CORR    -         -0.70  (seconds)                    DEFLEC18
 HU2779  DYNAMIC HEIGHT  -          2.700 (meters)        8.86  (feet) COMP
 HU2779  MODELED GRAVITY -    980,008.6   (mgal)                       NAVD 88
 HU2779
 HU2779  VERT ORDER      -  SECOND    CLASS I
 HU2779
 HU2779  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2779  Standards:
 HU2779         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2779            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2779  -------------------------------------------------------------------
 HU2779  NETWORK    0.54   1.08           0.24   0.20   0.55     -0.10124780
 HU2779  -------------------------------------------------------------------
 HU2779  Click here for local accuracies and other accuracy information.
 HU2779
 HU2779.The horizontal coordinates were established by GPS observations
 HU2779.and adjusted by the ARCHER-SHEE LAND SURVEYING in March 2017.
 HU2779
 HU2779.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2779.been affixed to the stable North American tectonic plate. See 
 HU2779.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2779
 HU2779.The horizontal coordinates are valid at the epoch date displayed above
 HU2779.which is a decimal equivalence of Year/Month/Day.
 HU2779
 HU2779.The orthometric height was determined by differential leveling and
 HU2779.adjusted by the NATIONAL GEODETIC SURVEY
 HU2779.in November 1994.
 HU2779
 HU2779.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2779.GEOID18 height accuracy estimate available here.
 HU2779
 HU2779.Click photographs - Photos may exist for this station.
 HU2779
 HU2779.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2779
 HU2779.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2779
 HU2779.The ellipsoidal height was determined by GPS observations
 HU2779.and is referenced to NAD 83.
 HU2779
 HU2779.The dynamic height is computed by dividing the NAVD 88
 HU2779.geopotential number by the normal gravity value computed on the
 HU2779.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2779.degrees latitude (g = 980.6199 gals.).
 HU2779
 HU2779.The modeled gravity was interpolated from observed gravity values.
 HU2779
 HU2779. The following values were computed from the NAD 83(2011) position.
 HU2779
 HU2779;                    North         East     Units Scale Factor Converg.
 HU2779;SPC MD       -    76,369.366   564,549.214   MT  0.99999338   +1 10 53.0
 HU2779;SPC MD       -   250,555.16  1,852,191.88   sFT  0.99999338   +1 10 53.0
 HU2779;UTM  18      - 4,243,476.329   489,713.768   MT  0.99960130   -0 04 22.8
 HU2779
 HU2779!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2779!SPC MD       -   1.00000523  x   0.99999338  =   0.99999861
 HU2779!UTM  18      -   1.00000523  x   0.99960130  =   0.99960653
 HU2779
 HU2779_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8971343476(NAD 83)
 HU2779
 HU2779                          SUPERSEDED SURVEY CONTROL
 HU2779
 HU2779  NGVD 29 (02/25/92)    2.948  (m)            9.67   (f) ADJUSTED    2 1
 HU2779
 HU2779.Superseded values are not recommended for survey control.
 HU2779
 HU2779.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2779.See file dsdata.pdf to determine how the superseded data were derived.
 HU2779
 HU2779_MARKER: DV = VERTICAL CONTROL DISK
 HU2779_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2779_STAMPING: A 199 1991
 HU2779_MARK LOGO: NGS
 HU2779_PROJECTION: RECESSED 10 CENTIMETERS
 HU2779_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2779_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2779+STABILITY: SURFACE MOTION
 HU2779_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2779+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2016
 HU2779
 HU2779  HISTORY     - Date     Condition        Report By
 HU2779  HISTORY     - 1991     MONUMENTED       MDSHA
 HU2779  HISTORY     - 20020305 GOOD             USPSQD
 HU2779  HISTORY     - 20031228 GOOD             USPSQD
 HU2779  HISTORY     - 20040409 GOOD             MDSHA
 HU2779  HISTORY     - 20051220 GOOD             USPSQD
 HU2779  HISTORY     - 20070916 GOOD             GEOCAC
 HU2779  HISTORY     - 20110111 GOOD             INDIV
 HU2779  HISTORY     - 20160220 GOOD             ARCSHE
 HU2779
 HU2779                          STATION DESCRIPTION
 HU2779
 HU2779'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2779'THE MARK IS LOCATED ABOUT 5.6 MI (9.0 KM) EAST-NORTHEAST OF BERLIN,
 HU2779'1.8 MI (2.9 KM) WEST OF OCEAN CITY AND ON ROAD RIGHT-OF-WAY.  TO
 HU2779'REACH FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN,
 HU2779'GO EAST ON U.S. HIGHWAY 50 FOR 5.42 MI (8.72 KM) TO THE INTERSECTION
 HU2779'OF KEYSER POINT ROAD AND THE MARK ON THE LEFT IN THE NORTHEAST ANGLE
 HU2779'OF THE INTERSECTION.  IT IS 45.2 FT (13.8 M) NORTH OF THE CENTER LINE
 HU2779'OF THE WESTBOUND LANES OF THE HIGHWAY, 44.0 FT (13.4 M) EAST OF THE
 HU2779'CENTER LINE OF KEYSER POINT ROAD, 19.5 FT (5.9 M) SOUTHEAST OF A
 HU2779'CARSONITE WITNESS POST AND SET IN THE TOP OF 0.8 FT (0.2 M) ROUND
 HU2779'CONCRETE POST RECESSED 0.1 FT (0.0 M) .
 HU2779
 HU2779                          STATION RECOVERY (2002)
 HU2779
 HU2779'RECOVERY NOTE BY US POWER SQUADRON 2002 (PMF)
 HU2779'RECOVERED IN GOOD CONDITION.
 HU2779
 HU2779                          STATION RECOVERY (2003)
 HU2779
 HU2779'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU2779'RECOVERED IN GOOD CONDITION.
 HU2779
 HU2779                          STATION RECOVERY (2004)
 HU2779
 HU2779'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (MRA)
 HU2779'RECOVERED IN GOOD CONDITION.
 HU2779
 HU2779                          STATION RECOVERY (2005)
 HU2779
 HU2779'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU2779'RECOVERED IN GOOD CONDITION.
 HU2779
 HU2779                          STATION RECOVERY (2007)
 HU2779
 HU2779'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 HU2779'RECOVERED IN GOOD CONDITION.
 HU2779
 HU2779                          STATION RECOVERY (2011)
 HU2779
 HU2779'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (RNH)
 HU2779'THE MARKER IS STILL IN GOOD CONDITION AND CAN BE USED FOR GPS WORK.
 HU2779
 HU2779                          STATION RECOVERY (2016)
 HU2779
 HU2779'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MRA)
 HU2779'ALSO 9.6 FT (2.9 M) NORTHEAST OF A TRAFFIC LIGHT POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3918 ***********************************************************************
 JU3918  DESIGNATION -  A 2
 JU3918  PID         -  JU3918
 JU3918  STATE/COUNTY-  MD/CECIL
 JU3918  COUNTRY     -  US
 JU3918  USGS QUAD   -  NORTH EAST (2016)
 JU3918
 JU3918                         *CURRENT SURVEY CONTROL
 JU3918  ______________________________________________________________________
 JU3918* NAD 83(1991) POSITION- 39 31 26.79896(N) 075 52 39.28623(W)   ADJUSTED
 JU3918* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3918  ______________________________________________________________________
 JU3918  GEOID HEIGHT    -        -33.302 (meters)                     GEOID18
 JU3918  LAPLACE CORR    -         -0.97  (seconds)                    DEFLEC18
 JU3918  HORZ ORDER      -  THIRD
 JU3918
 JU3918.The horizontal coordinates were established by classical geodetic methods
 JU3918.and adjusted by the National Geodetic Survey in January 1992.
 JU3918
 JU3918.The orthometric height was scaled from a topographic map.
 JU3918
 JU3918.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3918.GEOID18 height accuracy estimate available here.
 JU3918
 JU3918.Click photographs - Photos may exist for this station.
 JU3918
 JU3918.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3918
 JU3918. The following values were computed from the NAD 83(1991) position.
 JU3918
 JU3918;                    North         East     Units Scale Factor Converg.
 JU3918;SPC MD       -   206,785.162   496,508.760   MT  1.00001380   +0 42 16.1
 JU3918;SPC MD       -   678,427.65  1,628,962.49   sFT  1.00001380   +0 42 16.1
 JU3918;UTM  18      - 4,375,307.983   424,572.088   MT  0.99967005   -0 33 30.7
 JU3918
 JU3918!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3918!SPC MD       -   1.00000526  x   1.00001380  =   1.00001906
 JU3918!UTM  18      -   1.00000526  x   0.99967005  =   0.99967531
 JU3918
 JU3918:                Primary Azimuth Mark                     Grid Az
 JU3918:SPC MD       -  CREEK                                    097 44 26.6
 JU3918:UTM  18      -  CREEK                                    099 00 13.4
 JU3918
 JU3918_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2457275307(NAD 83)
 JU3918
 JU3918|---------------------------------------------------------------------|
 JU3918| PID    Reference Object                     Distance      Geod. Az  |
 JU3918|                                                           dddmmss.s |
 JU3918| JU3880 CREEK                               APPROX. 0.6 KM 0982642.7 |
 JU3918| JU3922 COURTHOUSE POINT LIGHT              APPROX. 1.3 KM 2074029.4 |
 JU3918| CB1168 A 2 RM 3                             19.507 METERS 30632     |
 JU3918| CB1167 A 2 RM 2                             17.678 METERS 32412     |
 JU3918| CB1166 A 2 RM 1                             20.117 METERS 34942     |
 JU3918|---------------------------------------------------------------------|
 JU3918
 JU3918                          SUPERSEDED SURVEY CONTROL
 JU3918
 JU3918  NAD 83(1986)-  39 31 26.79183(N)    075 52 39.29419(W) AD(       ) 3
 JU3918  NAD 27      -  39 31 26.39200(N)    075 52 40.52000(W) AD(       ) 3
 JU3918
 JU3918.Superseded values are not recommended for survey control.
 JU3918
 JU3918.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3918.See file dsdata.pdf to determine how the superseded data were derived.
 JU3918
 JU3918_MARKER: DD = SURVEY DISK
 JU3918_SETTING: 0 = UNSPECIFIED SETTING
 JU3918_MARK LOGO: USACE
 JU3918
 JU3918  HISTORY     - Date     Condition        Report By
 JU3918  HISTORY     - 1937     MONUMENTED       USACE
 JU3918  HISTORY     - 1938     GOOD             CGS
 JU3918
 JU3918                          STATION DESCRIPTION
 JU3918
 JU3918'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JU3918'RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0854 ***********************************************************************
 HV0854  DESIGNATION -  A 2 X
 HV0854  PID         -  HV0854
 HV0854  STATE/COUNTY-  MD/CHARLES
 HV0854  COUNTRY     -  US
 HV0854  USGS QUAD   -  LA PLATA (2016)
 HV0854
 HV0854                         *CURRENT SURVEY CONTROL
 HV0854  ______________________________________________________________________
 HV0854* NAD 83(1986) POSITION- 38 34 08.     (N) 076 58 50.     (W)   SCALED
 HV0854* NAVD 88 ORTHO HEIGHT -    58.458 (meters)      191.79  (feet) ADJUSTED
 HV0854  ______________________________________________________________________
 HV0854  GEOID HEIGHT    -        -32.890 (meters)                     GEOID18
 HV0854  DYNAMIC HEIGHT  -         58.423 (meters)      191.68  (feet) COMP
 HV0854  MODELED GRAVITY -    980,038.9   (mgal)                       NAVD 88
 HV0854
 HV0854  VERT ORDER      -  FIRST     CLASS II
 HV0854
 HV0854.The horizontal coordinates were scaled from a map and have
 HV0854.an estimated accuracy of +/- 6 seconds.
 HV0854
 HV0854.The orthometric height was determined by differential leveling and
 HV0854.adjusted by the NATIONAL GEODETIC SURVEY
 HV0854.in June 1991.
 HV0854
 HV0854.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0854.GEOID18 height accuracy estimate available here.
 HV0854
 HV0854.Click photographs - Photos may exist for this station.
 HV0854
 HV0854.The dynamic height is computed by dividing the NAVD 88
 HV0854.geopotential number by the normal gravity value computed on the
 HV0854.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0854.degrees latitude (g = 980.6199 gals.).
 HV0854
 HV0854.The modeled gravity was interpolated from observed gravity values.
 HV0854
 HV0854;                    North         East    Units  Estimated Accuracy
 HV0854;SPC MD       -   100,150.      401,700.      MT  (+/- 180 meters Scaled)
 HV0854
 HV0854_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH274707(NAD 83)
 HV0854
 HV0854                          SUPERSEDED SURVEY CONTROL
 HV0854
 HV0854  NGVD 29 (11/26/84)   58.690  (m)          192.55   (f) ADJUSTED    1 2
 HV0854
 HV0854.Superseded values are not recommended for survey control.
 HV0854
 HV0854.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0854.See file dsdata.pdf to determine how the superseded data were derived.
 HV0854
 HV0854_MARKER: DD = SURVEY DISK
 HV0854_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0854_SP_SET: CATCH BASIN
 HV0854_STAMPING: A 2 X 1969
 HV0854_MARK LOGO: MDSRC
 HV0854_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0854_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0854+SATELLITE: SATELLITE OBSERVATIONS - April 05, 1990
 HV0854
 HV0854  HISTORY     - Date     Condition        Report By
 HV0854  HISTORY     - 1969     MONUMENTED       MDSRC
 HV0854  HISTORY     - 1971     GOOD             NGS
 HV0854  HISTORY     - 19900405 GOOD             NGS
 HV0854
 HV0854                          STATION DESCRIPTION
 HV0854
 HV0854'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0854'5.6 MI SW FROM WALDORF.
 HV0854'ABOUT 5.65 MILES SOUTHWEST ALONG U.S. HIGHWAY 301 FROM THE
 HV0854'JUNCTION OF STATE HIGHWAY 5 AT WALDORF, ABOUT 2.8 MILES NORTH
 HV0854'ALONG U.S. HIGHWAY 301 FROM THE INTERSECTION OF STATE HIGHWAY
 HV0854'6 AT LA PLATA, AT THE INTERSECTION OF TURKEY HILL ROAD, ON
 HV0854'THE TOP OF THE NORTHEAST CORNER OF A CONCRETE CATCH BASIN, 38
 HV0854'FEET WEST OF THE CENTER LINE OF THE SOUTHBOUND LANE OF THE
 HV0854'HIGHWAY, 156 FEET NORTH OF THE APPROXIMATE CENTER OF THE
 HV0854'INTERSECTION, 51 FEET NORTHEAST OF THE CENTER LINE OF TURKEY
 HV0854'HILL ROAD, AT THE NORTH POINT OF THE TRIANGLE FORMED BY THE
 HV0854'INTERSECTION, 1 FOOT BELOW THE LEVEL OF THE U.S. HIGHWAY AND ON
 HV0854'TOP OF A CATCH BASIN THAT IS FLUSH WITH THE GROUND.
 HV0854
 HV0854                          STATION RECOVERY (1990)
 HV0854
 HV0854'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV0854'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0037 ***********************************************************************
 JV0037  DESIGNATION -  A 20
 JV0037  PID         -  JV0037
 JV0037  STATE/COUNTY-  MD/CECIL
 JV0037  COUNTRY     -  US
 JV0037  USGS QUAD   -  CONOWINGO DAM (2016)
 JV0037
 JV0037                         *CURRENT SURVEY CONTROL
 JV0037  ______________________________________________________________________
 JV0037* NAD 83(1986) POSITION- 39 38 34.     (N) 076 08 56.     (W)   SCALED
 JV0037* NAVD 88 ORTHO HEIGHT -    21.342 (meters)       70.02  (feet) ADJUSTED
 JV0037  ______________________________________________________________________
 JV0037  GEOID HEIGHT    -        -32.946 (meters)                     GEOID18
 JV0037  DYNAMIC HEIGHT  -         21.331 (meters)       69.98  (feet) COMP
 JV0037  MODELED GRAVITY -    980,144.4   (mgal)                       NAVD 88
 JV0037
 JV0037  VERT ORDER      -  FIRST     CLASS II
 JV0037
 JV0037.The horizontal coordinates were scaled from a map and have
 JV0037.an estimated accuracy of +/- 6 seconds.
 JV0037
 JV0037.The orthometric height was determined by differential leveling and
 JV0037.adjusted by the NATIONAL GEODETIC SURVEY
 JV0037.in June 1991.
 JV0037
 JV0037.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0037.GEOID18 height accuracy estimate available here.
 JV0037
 JV0037.Click photographs - Photos may exist for this station.
 JV0037
 JV0037.The dynamic height is computed by dividing the NAVD 88
 JV0037.geopotential number by the normal gravity value computed on the
 JV0037.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0037.degrees latitude (g = 980.6199 gals.).
 JV0037
 JV0037.The modeled gravity was interpolated from observed gravity values.
 JV0037
 JV0037;                    North         East    Units  Estimated Accuracy
 JV0037;SPC MD       -   219,710.      473,060.      MT  (+/- 180 meters Scaled)
 JV0037
 JV0037_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ014887(NAD 83)
 JV0037
 JV0037                          SUPERSEDED SURVEY CONTROL
 JV0037
 JV0037  NGVD 29 (11/26/84)   21.598  (m)           70.86   (f) ADJUSTED    1 2
 JV0037
 JV0037.Superseded values are not recommended for survey control.
 JV0037
 JV0037.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0037.See file dsdata.pdf to determine how the superseded data were derived.
 JV0037
 JV0037_MARKER: DB = BENCH MARK DISK
 JV0037_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0037_SP_SET: BRIDGE
 JV0037_STAMPING: A 20 1955
 JV0037_MARK LOGO: CGS
 JV0037_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0037_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0037+SATELLITE: SATELLITE OBSERVATIONS - March 08, 2012
 JV0037
 JV0037  HISTORY     - Date     Condition        Report By
 JV0037  HISTORY     - 1955     MONUMENTED       CGS
 JV0037  HISTORY     - 1979     GOOD             NGS
 JV0037  HISTORY     - 20120308 GOOD             CCDES
 JV0037
 JV0037                          STATION DESCRIPTION
 JV0037
 JV0037'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0037'2.4 MI SE FROM CONOWINGO DAM.
 JV0037'ABOUT 2.35 MILES SOUTHEAST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV0037'THE STATION AT CONOWINGO DAM, ABOUT 2.95 MILES NORTHWEST OF THE
 JV0037'STATION AT PORT DEPOSIT, ABOUT 650 YARDS SOUTH OF MILE POST 8,
 JV0037'IN THE TOP OF SOUTH END OF WEST HEAD WALL OF A 20-FOOT ARCHED
 JV0037'CONCRETE BRIDGE OVER A STREAM, 44 1/2 FEET WEST OF WEST RAIL AND
 JV0037'ABOUT 1 FOOT BELOW LEVEL OF TRACK.
 JV0037
 JV0037                          STATION RECOVERY (1979)
 JV0037
 JV0037'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0037'RECOVERED IN GOOD CONDITION.
 JV0037
 JV0037                          STATION RECOVERY (2012)
 JV0037
 JV0037'RECOVERY NOTE BY CECIL COUNTY DEPARTMENT OF 2012 (JEH)
 JV0037'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 UA0026 ***********************************************************************
 UA0026  DESIGNATION -  A 200
 UA0026  PID         -  UA0026
 UA0026  STATE/COUNTY-  MD/PRINCE GEORGES
 UA0026  COUNTRY     -  US
 UA0026  USGS QUAD   -  UPPER MARLBORO (2016)
 UA0026
 UA0026                         *CURRENT SURVEY CONTROL
 UA0026  ______________________________________________________________________
 UA0026* NAD 83(1986) POSITION- 38 49 48.1    (N) 076 51 26.6    (W)   HD_HELD2
 UA0026* NAVD 88 ORTHO HEIGHT -    77.421 (meters)      254.01  (feet) ADJUSTED
 UA0026  ______________________________________________________________________
 UA0026  GEOID HEIGHT    -        -32.558 (meters)                     GEOID18
 UA0026  DYNAMIC HEIGHT  -         77.378 (meters)      253.86  (feet) COMP
 UA0026  MODELED GRAVITY -    980,071.0   (mgal)                       NAVD 88
 UA0026
 UA0026  VERT ORDER      -  FIRST     CLASS II
 UA0026
 UA0026.The horizontal coordinates were established by autonomous hand held GPS
 UA0026.observations and have an estimated accuracy of +/- 10 meters.
 UA0026
 UA0026.The orthometric height was determined by differential leveling and
 UA0026.adjusted by the NATIONAL GEODETIC SURVEY
 UA0026.in August 2020.
 UA0026
 UA0026.Significant digits in the geoid height do not necessarily reflect accuracy.
 UA0026.GEOID18 height accuracy estimate available here.
 UA0026
 UA0026.Click photographs - Photos may exist for this station.
 UA0026
 UA0026.The dynamic height is computed by dividing the NAVD 88
 UA0026.geopotential number by the normal gravity value computed on the
 UA0026.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 UA0026.degrees latitude (g = 980.6199 gals.).
 UA0026
 UA0026.The modeled gravity was interpolated from observed gravity values.
 UA0026
 UA0026;                    North         East    Units  Estimated Accuracy
 UA0026;SPC MD       -   129,148.      412,383.      MT  (+/- 10 meters HH2 GPS)
 UA0026
 UA0026_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3877599553(NAD 83)
 UA0026
 UA0026                          SUPERSEDED SURVEY CONTROL
 UA0026
 UA0026  NAVD 88 (08/16/94)   77.426  (m)          254.02   (f) SUPERSEDED  1 2
 UA0026
 UA0026.Superseded values are not recommended for survey control.
 UA0026
 UA0026.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 UA0026.See file dsdata.pdf to determine how the superseded data were derived.
 UA0026
 UA0026_MARKER: DV = VERTICAL CONTROL DISK
 UA0026_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 UA0026_SP_SET: INLET BACKWALL
 UA0026_STAMPING: A 200 1994
 UA0026_MARK LOGO: NGS
 UA0026_MAGNETIC: N = NO MAGNETIC MATERIAL
 UA0026_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 UA0026+STABILITY: SURFACE MOTION
 UA0026_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 UA0026+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 UA0026
 UA0026  HISTORY     - Date     Condition        Report By
 UA0026  HISTORY     - 1994     MONUMENTED       NGS
 UA0026  HISTORY     - 20191028 GOOD             ARCSHE
 UA0026
 UA0026                          STATION DESCRIPTION
 UA0026
 UA0026'DESCRIBED BY NATIONAL GEODETIC SURVEY 1994
 UA0026'2.1 KM (1.30 MI) SOUTHEASTERLY ALONG STATE HIGHWAY 4 FROM THE
 UA0026'INTERSECTION OF FORESTVILLE ROAD AT FORESTVILLE.  AT THE JUNCTION OF
 UA0026'HWY 4 AND SUITLAND PARKWAY.  SET IN THE TOP AND NORTHWEST CORNER OF A
 UA0026'1.2 X 1.2 METER (3.9 FT) CONCRETE CATCH BASIN.  4 M (13.1 FT) NORTH
 UA0026'FROM THE CURB OF EXIT LANE FROM THE SOUTH BOUND LANES OF HWY 4 TO
 UA0026'SUITLAND PARKWAY, AND 5 M (16.4 FT) NE FROM A YIELD SIGN.
 UA0026
 UA0026                          STATION RECOVERY (2019)
 UA0026
 UA0026'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 UA0026'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI7160 ***********************************************************************
 AI7160  DESIGNATION -  A 201
 AI7160  PID         -  AI7160
 AI7160  STATE/COUNTY-  MD/SOMERSET
 AI7160  COUNTRY     -  US
 AI7160  USGS QUAD   -  KINGSTON (2016)
 AI7160
 AI7160                         *CURRENT SURVEY CONTROL
 AI7160  ______________________________________________________________________
 AI7160* NAD 83(1986) POSITION- 38 04 29.0    (N) 075 43 40.8    (W)   HD_HELD2
 AI7160* NAVD 88 ORTHO HEIGHT -     1.666 (meters)        5.47  (feet) ADJUSTED
 AI7160  ______________________________________________________________________
 AI7160  GEOID HEIGHT    -        -36.107 (meters)                     GEOID18
 AI7160  DYNAMIC HEIGHT  -          1.665 (meters)        5.46  (feet) COMP
 AI7160  MODELED GRAVITY -    979,977.4   (mgal)                       NAVD 88
 AI7160
 AI7160  VERT ORDER      -  FIRST     CLASS II
 AI7160
 AI7160.The horizontal coordinates were established by autonomous hand held GPS
 AI7160.observations and have an estimated accuracy of +/- 10 meters.
 AI7160
 AI7160.The orthometric height was determined by differential leveling and
 AI7160.adjusted by the NATIONAL GEODETIC SURVEY
 AI7160.in September 2000.
 AI7160
 AI7160.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI7160.GEOID18 height accuracy estimate available here.
 AI7160
 AI7160.Click photographs - Photos may exist for this station.
 AI7160
 AI7160.The dynamic height is computed by dividing the NAVD 88
 AI7160.geopotential number by the normal gravity value computed on the
 AI7160.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AI7160.degrees latitude (g = 980.6199 gals.).
 AI7160
 AI7160.The modeled gravity was interpolated from observed gravity values.
 AI7160
 AI7160;                    North         East    Units  Estimated Accuracy
 AI7160;SPC MD       -    46,074.      511,611.      MT  (+/- 10 meters HH2 GPS)
 AI7160
 AI7160_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3614814355(NAD 83)
 AI7160
 AI7160                          SUPERSEDED SURVEY CONTROL
 AI7160
 AI7160.No superseded survey control is available for this station.
 AI7160
 AI7160_MARKER: DV = VERTICAL CONTROL DISK
 AI7160_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 AI7160_SP_SET: CULVERT HEADWALL
 AI7160_STAMPING: A 201 2000
 AI7160_MARK LOGO: NGS
 AI7160_MAGNETIC: N = NO MAGNETIC MATERIAL
 AI7160_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI7160+STABILITY: SURFACE MOTION
 AI7160
 AI7160  HISTORY     - Date     Condition        Report By
 AI7160  HISTORY     - 2000     MONUMENTED       NGS
 AI7160
 AI7160                          STATION DESCRIPTION
 AI7160
 AI7160'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (DBC)
 AI7160'4.3 MILES (6.9 KM) SOUTHWEST ALONG STATE HIGHWAY 413 FROM THE JUNCTION
 AI7160'OF US HIGHWAY 13 AND STATE HIGHWAY 413, NEAR WESTOVER, 0.6 MILE (1.0
 AI7160'KM) SOUTHWEST OF BRIDGE OVER RIVER, 15.9 FEET (4.8 M) WEST OF A WOOD
 AI7160'POST WITH A SIGN FOR KINGSTON LANE, 39.0 FEET (11.9 M) WEST NORTHWEST
 AI7160'OF CENTERLINE OF STATE HIGHWAY 413, 38.8 FEET (11.8 M) NORTHEAST OF
 AI7160'CENTERLINE OF KINGSTON LANE, 1.10 FEET (0.34 M) NORTHEAST OF A SIGN
 AI7160'FOR WARNING UNDERGROUND CABLE, 26.8 FEET (8.2 M) EAST OF A SUPPORTING
 AI7160'POLE 43082 82585 FOR TELEPHONE LINE, 2.6 FEET (0.8 M) BELOW HIGHWAY,
 AI7160'1.9 FEET (0.6 M) NORTHEAST OF WEST END OF HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0713 ***********************************************************************
 JV0713  DESIGNATION -  A 21
 JV0713  PID         -  JV0713
 JV0713  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0713  COUNTRY     -  US
 JV0713  USGS QUAD   -  RELAY (2016)
 JV0713
 JV0713                         *CURRENT SURVEY CONTROL
 JV0713  ______________________________________________________________________
 JV0713* NAD 83(1986) POSITION- 39 11 09.     (N) 076 40 31.     (W)   SCALED
 JV0713* NAVD 88 ORTHO HEIGHT -    46.322 (meters)      151.97  (feet) ADJUSTED
 JV0713  ______________________________________________________________________
 JV0713  GEOID HEIGHT    -        -32.672 (meters)                     GEOID18
 JV0713  DYNAMIC HEIGHT  -         46.297 (meters)      151.89  (feet) COMP
 JV0713  MODELED GRAVITY -    980,095.6   (mgal)                       NAVD 88
 JV0713
 JV0713  VERT ORDER      -  FIRST     CLASS II
 JV0713
 JV0713.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV0713
 JV0713.The horizontal coordinates were scaled from a map and have
 JV0713.an estimated accuracy of +/- 6 seconds.
 JV0713
 JV0713.The orthometric height was determined by differential leveling and
 JV0713.adjusted by the NATIONAL GEODETIC SURVEY
 JV0713.in June 1991.
 JV0713
 JV0713.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0713.GEOID18 height accuracy estimate available here.
 JV0713
 JV0713.Click photographs - Photos may exist for this station.
 JV0713
 JV0713.The dynamic height is computed by dividing the NAVD 88
 JV0713.geopotential number by the normal gravity value computed on the
 JV0713.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0713.degrees latitude (g = 980.6199 gals.).
 JV0713
 JV0713.The modeled gravity was interpolated from observed gravity values.
 JV0713
 JV0713;                    North         East    Units  Estimated Accuracy
 JV0713;SPC MD       -   168,690.      428,060.      MT  (+/- 180 meters Scaled)
 JV0713
 JV0713_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ553387(NAD 83)
 JV0713
 JV0713                          SUPERSEDED SURVEY CONTROL
 JV0713
 JV0713  NGVD 29 (11/26/84)   46.565  (m)          152.77   (f) ADJUSTED    1 2
 JV0713
 JV0713.Superseded values are not recommended for survey control.
 JV0713
 JV0713.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0713.See file dsdata.pdf to determine how the superseded data were derived.
 JV0713
 JV0713_MARKER: DB = BENCH MARK DISK
 JV0713_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0713_SP_SET: PIER DOORWAY
 JV0713_STAMPING: A 21 1959
 JV0713_MARK LOGO: CGS
 JV0713_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0713
 JV0713  HISTORY     - Date     Condition        Report By
 JV0713  HISTORY     - 1959     MONUMENTED       CGS
 JV0713  HISTORY     - 1971     GOOD             NGS
 JV0713  HISTORY     - 1977     GOOD             NGS
 JV0713  HISTORY     - 20071201 MARK NOT FOUND   JARICE
 JV0713
 JV0713                          STATION DESCRIPTION
 JV0713
 JV0713'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0713'AT SHIPLEY.
 JV0713'AT FRIENDSHIP INTERNATIONAL AIRPORT, AT PIER B OF THE
 JV0713'ADMINISTRATION BUILDING, NEAR THE SOUTHWEST CORNER OF PIER B,
 JV0713'SET ON THE CONCRETE DOORWAY ALONG THE WEST SIDE OF THE PIER
 JV0713'AT THE FOOT OF THE CONCRETE STEPS LEADING UP TO THE FIRST FLOOR
 JV0713'OF THE PIER, 6 1/2 FEET EAST OF THE WEST CONCRETE CURB ALONG
 JV0713'THE WEST SIDE OF THE PIER, 21 1/2 FEET NORTH OF THE SOUTHWEST
 JV0713'CORNER OF THE PIER, 4.7 FEET NORTH OF THE FOOT OF THE STAIR
 JV0713'AND LEVEL WITH THE FLOOR.
 JV0713
 JV0713                          STATION RECOVERY (1977)
 JV0713
 JV0713'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 JV0713'RECOVERED IN GOOD CONDITION.
 JV0713
 JV0713                          STATION RECOVERY (2007)
 JV0713
 JV0713'RECOVERY NOTE BY J A RICE INC 2007 (MRA)
 JV0713'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0864 ***********************************************************************
 JV0864  DESIGNATION -  A 25
 JV0864  PID         -  JV0864
 JV0864  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0864  COUNTRY     -  US
 JV0864  USGS QUAD   -  BELTSVILLE (2016)
 JV0864
 JV0864                         *CURRENT SURVEY CONTROL
 JV0864  ______________________________________________________________________
 JV0864* NAD 83(1986) POSITION- 39 01 08.     (N) 076 56 17.     (W)   SCALED
 JV0864* NAVD 88 ORTHO HEIGHT -    35.959 (meters)      117.98  (feet) ADJUSTED
 JV0864  ______________________________________________________________________
 JV0864  GEOID HEIGHT    -        -32.104 (meters)                     GEOID18
 JV0864  DYNAMIC HEIGHT  -         35.940 (meters)      117.91  (feet) COMP
 JV0864  MODELED GRAVITY -    980,105.0   (mgal)                       NAVD 88
 JV0864
 JV0864  VERT ORDER      -  SECOND    CLASS 0
 JV0864
 JV0864.The horizontal coordinates were scaled from a map and have
 JV0864.an estimated accuracy of +/- 6 seconds.
 JV0864
 JV0864.The orthometric height was determined by differential leveling and
 JV0864.adjusted by the NATIONAL GEODETIC SURVEY
 JV0864.in June 1991.
 JV0864
 JV0864.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0864.GEOID18 height accuracy estimate available here.
 JV0864
 JV0864.Click photographs - Photos may exist for this station.
 JV0864
 JV0864.The dynamic height is computed by dividing the NAVD 88
 JV0864.geopotential number by the normal gravity value computed on the
 JV0864.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0864.degrees latitude (g = 980.6199 gals.).
 JV0864
 JV0864.The modeled gravity was interpolated from observed gravity values.
 JV0864
 JV0864;                    North         East    Units  Estimated Accuracy
 JV0864;SPC MD       -   150,110.      405,360.      MT  (+/- 180 meters Scaled)
 JV0864
 JV0864_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ322206(NAD 83)
 JV0864
 JV0864                          SUPERSEDED SURVEY CONTROL
 JV0864
 JV0864  NGVD 29 (11/26/84)   36.177  (m)          118.69   (f) ADJUSTED    2 0
 JV0864
 JV0864.Superseded values are not recommended for survey control.
 JV0864
 JV0864.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0864.See file dsdata.pdf to determine how the superseded data were derived.
 JV0864
 JV0864_MARKER: DB = BENCH MARK DISK
 JV0864_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0864_STAMPING: A 25 1957
 JV0864_MARK LOGO: CGS
 JV0864_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0864+STABILITY: SURFACE MOTION
 JV0864
 JV0864  HISTORY     - Date     Condition        Report By
 JV0864  HISTORY     - 1957     MONUMENTED       CGS
 JV0864
 JV0864                          STATION DESCRIPTION
 JV0864
 JV0864'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0864'2 MI SW FROM BELTSVILLE.
 JV0864'FROM THE JUNCTION OF U.S. HIGHWAY 1 AND CHERRY HILL ROAD ABOUT 2
 JV0864'MILES SOUTH-SOUTHWEST OF BELTSVILLE, GO NORTHWEST ON CHERRY HILL
 JV0864'ROAD 0.6 MILE TO A T ROAD LEFT.  THE MARK IS 145 FEET SOUTHEAST
 JV0864'ALONG ROAD FROM A WHITE SHINGLE HOUSE, 18.5 FEET NORTHEAST OF
 JV0864'THE CENTERLINE OF CHERRY HILL ROAD, 10.5 FEET SOUTHWEST OF A
 JV0864'METAL GATE IN CYCLONE FENCE AND 2 FEET SOUTHEAST OF A WHITE
 JV0864'WITNESS POST.  THE MARK PROJECTS 4 INCHES AND THE DISK IS STAMPED
 JV0864'A 25 1957.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0914 ***********************************************************************
 JV0914  DESIGNATION -  A 26
 JV0914  PID         -  JV0914
 JV0914  STATE/COUNTY-  MD/BALTIMORE
 JV0914  COUNTRY     -  US
 JV0914  USGS QUAD   -  RELAY (2016)
 JV0914
 JV0914                         *CURRENT SURVEY CONTROL
 JV0914  ______________________________________________________________________
 JV0914* NAD 83(1986) POSITION- 39 13 52.5    (N) 076 42 30.1    (W)   HD_HELD2
 JV0914* NAVD 88 ORTHO HEIGHT -    47.379 (meters)      155.44  (feet) ADJUSTED
 JV0914  ______________________________________________________________________
 JV0914  GEOID HEIGHT    -        -32.521 (meters)                     GEOID18
 JV0914  DYNAMIC HEIGHT  -         47.354 (meters)      155.36  (feet) COMP
 JV0914  MODELED GRAVITY -    980,100.9   (mgal)                       NAVD 88
 JV0914
 JV0914  VERT ORDER      -  SECOND    CLASS 0
 JV0914
 JV0914.The horizontal coordinates were established by autonomous hand held GPS
 JV0914.observations and have an estimated accuracy of +/- 10 meters.
 JV0914
 JV0914.The orthometric height was determined by differential leveling and
 JV0914.adjusted by the NATIONAL GEODETIC SURVEY
 JV0914.in June 1991.
 JV0914
 JV0914.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0914.GEOID18 height accuracy estimate available here.
 JV0914
 JV0914.Click photographs - Photos may exist for this station.
 JV0914
 JV0914.The dynamic height is computed by dividing the NAVD 88
 JV0914.geopotential number by the normal gravity value computed on the
 JV0914.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0914.degrees latitude (g = 980.6199 gals.).
 JV0914
 JV0914.The modeled gravity was interpolated from observed gravity values.
 JV0914
 JV0914;                    North         East    Units  Estimated Accuracy
 JV0914;SPC MD       -   173,718.      425,180.      MT  (+/- 10 meters HH2 GPS)
 JV0914
 JV0914_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5254843829(NAD 83)
 JV0914
 JV0914                          SUPERSEDED SURVEY CONTROL
 JV0914
 JV0914  NGVD 29 (11/26/84)   47.605  (m)          156.18   (f) ADJUSTED    2 0
 JV0914
 JV0914.Superseded values are not recommended for survey control.
 JV0914
 JV0914.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0914.See file dsdata.pdf to determine how the superseded data were derived.
 JV0914
 JV0914_MARKER: DB = BENCH MARK DISK
 JV0914_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0914_STAMPING: A 26 1957
 JV0914_MARK LOGO: CGS
 JV0914_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0914+STABILITY: SURFACE MOTION
 JV0914_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0914+SATELLITE: SATELLITE OBSERVATIONS - August 14, 2017
 JV0914
 JV0914  HISTORY     - Date     Condition        Report By
 JV0914  HISTORY     - 1957     MONUMENTED       CGS
 JV0914  HISTORY     - 1970     GOOD             MDSRC
 JV0914  HISTORY     - 20031225 MARK NOT FOUND   USPSQD
 JV0914  HISTORY     - 20170814 GOOD             GEOCAC
 JV0914
 JV0914                          STATION DESCRIPTION
 JV0914
 JV0914'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0914'0.8 MI W FROM RELAY.
 JV0914'FROM THE JUNCTION OF U.S. HIGHWAY 1 AND STATE HIGHWAY 166, GO
 JV0914'NORTH-WESTERLY ON HIGHWAY 166 0.8 MILE TO FRANCIS AVENUE.
 JV0914'CONTINUE ON HIGHWAY 166 0.1 MILE TO MARK ON THE RIGHT.  MARK IS
 JV0914'21 FEET NORTHEAST OF CENTERLINE OF HIGHWAY 166, 14 FEET SOUTH OF
 JV0914'14 INCH ELM TREE AND 9 FEET NORTH OF POWER POLE 35.  DISK IS
 JV0914'SET IN TOP OF CONCRETE POST THAT PROJECTS ABOUT 3 INCHES.
 JV0914
 JV0914                          STATION RECOVERY (1970)
 JV0914
 JV0914'RECOVERY NOTE BY MD STATE ROADS COMM 1970
 JV0914'RECOVERED IN GOOD CONDITION.
 JV0914
 JV0914                          STATION RECOVERY (2003)
 JV0914
 JV0914'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV0914'MARK NOT FOUND.
 JV0914
 JV0914                          STATION RECOVERY (2017)
 JV0914
 JV0914'RECOVERY NOTE BY GEOCACHING 2017 (LPR)
 JV0914'THE MARK IS LOCATED ALONG SOUTH ROLLING ROAD, APPROX. 0.1 MILES
 JV0914'NORTH-NORTHEAST OF THE INTERSECTION WITH FRANCIS AVE., ON THE RIGHT
 JV0914'SIDE OF THE ROAD.  ELM TREE DESCRIBED IN 1957 DESCRIPTION IS NO LONGER
 JV0914'PRESENT.  POWER POLE DESCRIBED IN 1957 DESCRIPTION IS NOW LABELED 'BGE
 JV0914'270116'.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3345 ***********************************************************************
 JV3345  DESIGNATION -  A 27 RESET
 JV3345  PID         -  JV3345
 JV3345  STATE/COUNTY-  MD/WASHINGTON
 JV3345  COUNTRY     -  US
 JV3345  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3345
 JV3345                         *CURRENT SURVEY CONTROL
 JV3345  ______________________________________________________________________
 JV3345* NAD 83(1986) POSITION- 39 36 18.     (N) 077 48 15.     (W)   SCALED
 JV3345* NAVD 88 ORTHO HEIGHT -   130.60  (meters)      428.5   (feet) RESET
 JV3345  ______________________________________________________________________
 JV3345  GEOID HEIGHT    -        -34.239 (meters)                     GEOID18
 JV3345  VERT ORDER      -  THIRD
 JV3345
 JV3345.The horizontal coordinates were scaled from a map and have
 JV3345.an estimated accuracy of +/- 6 seconds.
 JV3345
 JV3345.The orthometric height was computed from unverified reset data.
 JV3345
 JV3345.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3345.GEOID18 height accuracy estimate available here.
 JV3345
 JV3345.Click photographs - Photos may exist for this station.
 JV3345
 JV3345;                    North         East    Units  Estimated Accuracy
 JV3345;SPC MD       -   215,480.      330,930.      MT  (+/- 180 meters Scaled)
 JV3345
 JV3345_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ592876(NAD 83)
 JV3345
 JV3345                          SUPERSEDED SURVEY CONTROL
 JV3345
 JV3345  NGVD 29 (??/??/??)  130.80   (m)          429.1    (f) RESET       3  
 JV3345
 JV3345.Superseded values are not recommended for survey control.
 JV3345
 JV3345.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3345.See file dsdata.pdf to determine how the superseded data were derived.
 JV3345
 JV3345_MARKER: DB = BENCH MARK DISK
 JV3345_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3345_STAMPING: A 27 RESET 1964
 JV3345_MARK LOGO: CGS
 JV3345_PROJECTION: FLUSH
 JV3345_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3345+STABILITY: SURFACE MOTION
 JV3345
 JV3345  HISTORY     - Date     Condition        Report By
 JV3345  HISTORY     - 1964     MONUMENTED       MDSRC
 JV3345  HISTORY     - 1978     GOOD             ALSTER
 JV3345
 JV3345                          STATION DESCRIPTION
 JV3345
 JV3345'DESCRIBED BY MD STATE ROADS COMM 1964
 JV3345'0.9 MI NE FROM WILLIAMSPORT.
 JV3345'ABOUT 0.9 MILE NORTHEAST ALONG U.S. ROUTE 11 FROM THE JUNCTION OF
 JV3345'STATE ROUTES 63 AND 68 IN WILLIAMSPORT, NEAR THE JUNCTION OF
 JV3345'INTERSTATE ROUTE 80, IT IS 165.5 FEET SOUTHEAST OF THE CENTERLINE
 JV3345'OF U.S. ROUTE 11, 144.0 FEET NORTHEAST OF THE MOST WESTERLY OF
 JV3345'TWIN HIGHLINE POLES, AND 136 FEET NORTHEAST OF THE EASTERLY
 JV3345'HIGHLINE POLE AND SET IN A CONCRETE POST FLUSH TO THE GROUND.
 JV3345
 JV3345                          STATION RECOVERY (1978)
 JV3345
 JV3345'RECOVERY NOTE BY ALSTER AND ASSOCIATES ENGINEERS 1978
 JV3345'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1130 ***********************************************************************
 HV1130  DESIGNATION -  A 28
 HV1130  PID         -  HV1130
 HV1130  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1130  COUNTRY     -  US
 HV1130  USGS QUAD   -  LANHAM (2016)
 HV1130
 HV1130                         *CURRENT SURVEY CONTROL
 HV1130  ______________________________________________________________________
 HV1130* NAD 83(1986) POSITION- 38 58 45.     (N) 076 52 18.     (W)   SCALED
 HV1130* NAVD 88 ORTHO HEIGHT -    44.995 (meters)      147.62  (feet) ADJUSTED
 HV1130  ______________________________________________________________________
 HV1130  GEOID HEIGHT    -        -32.305 (meters)                     GEOID18
 HV1130  DYNAMIC HEIGHT  -         44.971 (meters)      147.54  (feet) COMP
 HV1130  MODELED GRAVITY -    980,091.5   (mgal)                       NAVD 88
 HV1130
 HV1130  VERT ORDER      -  SECOND    CLASS 0
 HV1130
 HV1130.The horizontal coordinates were scaled from a map and have
 HV1130.an estimated accuracy of +/- 6 seconds.
 HV1130
 HV1130.The orthometric height was determined by differential leveling and
 HV1130.adjusted by the NATIONAL GEODETIC SURVEY
 HV1130.in June 1991.
 HV1130
 HV1130.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1130.GEOID18 height accuracy estimate available here.
 HV1130
 HV1130.Click photographs - Photos may exist for this station.
 HV1130
 HV1130.The dynamic height is computed by dividing the NAVD 88
 HV1130.geopotential number by the normal gravity value computed on the
 HV1130.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1130.degrees latitude (g = 980.6199 gals.).
 HV1130
 HV1130.The modeled gravity was interpolated from observed gravity values.
 HV1130
 HV1130;                    North         East    Units  Estimated Accuracy
 HV1130;SPC MD       -   145,700.      411,120.      MT  (+/- 180 meters Scaled)
 HV1130
 HV1130_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ378161(NAD 83)
 HV1130
 HV1130                          SUPERSEDED SURVEY CONTROL
 HV1130
 HV1130  NGVD 29 (11/26/84)   45.232  (m)          148.40   (f) ADJUSTED    2 0
 HV1130
 HV1130.Superseded values are not recommended for survey control.
 HV1130
 HV1130.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1130.See file dsdata.pdf to determine how the superseded data were derived.
 HV1130
 HV1130_MARKER: DB = BENCH MARK DISK
 HV1130_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1130_STAMPING: A 28 1958
 HV1130_MARK LOGO: CGS
 HV1130_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1130+STABILITY: SURFACE MOTION
 HV1130
 HV1130  HISTORY     - Date     Condition        Report By
 HV1130  HISTORY     - 1958     MONUMENTED       CGS
 HV1130
 HV1130                          STATION DESCRIPTION
 HV1130
 HV1130'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1130'1.1 MI N FROM LANHAM.
 HV1130'ABOUT 1.1 MILES NORTH ALONG THE PRINCE GARDENS PARKWAY FROM
 HV1130'THE LANHAM SCHOOL AT LANHAM, THENCE 0.2 MILE WEST ALONG GOOD
 HV1130'LUCK ROAD, AT THE JUNCTION OF A GRAVELED ROAD LEADING NORTH,
 HV1130'29 FEET NORTH OF THE CENTER LINE OF GOOD LUCK ROAD, 25 FEET
 HV1130'WEST OF THE CENTER LINE OF THE GRAVEL ROAD, 13 1/2 FEET NORTHWEST
 HV1130'OF POWER LINE POLE NO. 872866, 1 FOOT EAST OF A METAL WITNESS
 HV1130'POST, SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES
 HV1130'ABOVE THE GROUND AND ABOUT LEVEL WITH THE ROADS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1154 ***********************************************************************
 JV1154  DESIGNATION -  A 29
 JV1154  PID         -  JV1154
 JV1154  STATE/COUNTY-  MD/BALTIMORE
 JV1154  COUNTRY     -  US
 JV1154  USGS QUAD   -  TOWSON (2016)
 JV1154
 JV1154                         *CURRENT SURVEY CONTROL
 JV1154  ______________________________________________________________________
 JV1154* NAD 83(1986) POSITION- 39 22 45.     (N) 076 31 02.     (W)   SCALED
 JV1154* NAVD 88 ORTHO HEIGHT -    89.457 (meters)      293.49  (feet) ADJUSTED
 JV1154  ______________________________________________________________________
 JV1154  GEOID HEIGHT    -        -32.802 (meters)                     GEOID18
 JV1154  DYNAMIC HEIGHT  -         89.409 (meters)      293.34  (feet) COMP
 JV1154  MODELED GRAVITY -    980,095.6   (mgal)                       NAVD 88
 JV1154
 JV1154  VERT ORDER      -  SECOND    CLASS 0
 JV1154
 JV1154.The horizontal coordinates were scaled from a map and have
 JV1154.an estimated accuracy of +/- 6 seconds.
 JV1154
 JV1154.The orthometric height was determined by differential leveling and
 JV1154.adjusted by the NATIONAL GEODETIC SURVEY
 JV1154.in June 1991.
 JV1154
 JV1154.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1154.GEOID18 height accuracy estimate available here.
 JV1154
 JV1154.Click photographs - Photos may exist for this station.
 JV1154
 JV1154.The dynamic height is computed by dividing the NAVD 88
 JV1154.geopotential number by the normal gravity value computed on the
 JV1154.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1154.degrees latitude (g = 980.6199 gals.).
 JV1154
 JV1154.The modeled gravity was interpolated from observed gravity values.
 JV1154
 JV1154;                    North         East    Units  Estimated Accuracy
 JV1154;SPC MD       -   190,210.      441,600.      MT  (+/- 180 meters Scaled)
 JV1154
 JV1154_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ693599(NAD 83)
 JV1154
 JV1154                          SUPERSEDED SURVEY CONTROL
 JV1154
 JV1154  NGVD 29 (11/26/84)   89.695  (m)          294.27   (f) ADJUSTED    2 0
 JV1154
 JV1154.Superseded values are not recommended for survey control.
 JV1154
 JV1154.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1154.See file dsdata.pdf to determine how the superseded data were derived.
 JV1154
 JV1154_MARKER: DB = BENCH MARK DISK
 JV1154_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1154_STAMPING: A 29 1958
 JV1154_MARK LOGO: CGS
 JV1154_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1154+STABILITY: SURFACE MOTION
 JV1154
 JV1154  HISTORY     - Date     Condition        Report By
 JV1154  HISTORY     - 1958     MONUMENTED       CGS
 JV1154  HISTORY     - 1959     GOOD             CGS
 JV1154  HISTORY     - 19940719 MARK NOT FOUND   USPSQD
 JV1154  HISTORY     - 20010331 MARK NOT FOUND   NGS
 JV1154
 JV1154                          STATION DESCRIPTION
 JV1154
 JV1154'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1154'1.2 MI N FROM PUTTY HILL.
 JV1154'0.5 MILE NORTHEAST ALONG U.S. HIGHWAY 1 (BELAIR ROAD) FROM THE
 JV1154'FIRE STATION AND THE INTERSECTION OF FITCH AVENUE AT PUTTY HILL,
 JV1154'THENCE 0.65 MILE NORTHWEST ALONG PUTTY HILL ROAD, NEAR THE
 JV1154'NORTH CORNER OF A WOODED AREA, 15 1/2 FEET SOUTHWEST OF THE
 JV1154'CENTER LINE OF PUTTY HILL ROAD, 63 FEET WEST-NORTHWEST OF
 JV1154'TELEPHONE POLE NO. 58, 7 1/2 FEET NORTHEAST OF AN 18-INCH MAPLE
 JV1154'TREE, 2 FEET NORTHEAST OF A METAL WITNESS POST, 2 FEET ABOVE
 JV1154'THE LEVEL OF THE ROAD AND SET IN THE TOP OF A CONCRETE POST
 JV1154'PROJECTING 4 INCHES ABOVE THE LEVEL OF THE GROUND.
 JV1154
 JV1154                          STATION RECOVERY (1994)
 JV1154
 JV1154'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV1154'MARK NOT FOUND.
 JV1154
 JV1154                          STATION RECOVERY (2001)
 JV1154
 JV1154'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV1154'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1411 ***********************************************************************
 JU1411  DESIGNATION -  A 3
 JU1411  PID         -  JU1411
 JU1411  STATE/COUNTY-  MD/CECIL
 JU1411  COUNTRY     -  US
 JU1411  USGS QUAD   -  NEWARK WEST (2016)
 JU1411
 JU1411                         *CURRENT SURVEY CONTROL
 JU1411  ______________________________________________________________________
 JU1411* NAD 83(1986) POSITION- 39 39 32.     (N) 075 49 35.     (W)   SCALED
 JU1411* NAVD 88 ORTHO HEIGHT -    44.397 (meters)      145.66  (feet) ADJUSTED
 JU1411  ______________________________________________________________________
 JU1411  GEOID HEIGHT    -        -33.065 (meters)                     GEOID18
 JU1411  DYNAMIC HEIGHT  -         44.375 (meters)      145.59  (feet) COMP
 JU1411  MODELED GRAVITY -    980,143.8   (mgal)                       NAVD 88
 JU1411
 JU1411  VERT ORDER      -  FIRST     CLASS II
 JU1411
 JU1411.The horizontal coordinates were scaled from a map and have
 JU1411.an estimated accuracy of +/- 6 seconds.
 JU1411
 JU1411.The orthometric height was determined by differential leveling and
 JU1411.adjusted by the NATIONAL GEODETIC SURVEY
 JU1411.in June 1991.
 JU1411
 JU1411.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1411.GEOID18 height accuracy estimate available here.
 JU1411
 JU1411.Click photographs - Photos may exist for this station.
 JU1411
 JU1411.The dynamic height is computed by dividing the NAVD 88
 JU1411.geopotential number by the normal gravity value computed on the
 JU1411.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1411.degrees latitude (g = 980.6199 gals.).
 JU1411
 JU1411.The modeled gravity was interpolated from observed gravity values.
 JU1411
 JU1411;                    North         East    Units  Estimated Accuracy
 JU1411;SPC MD       -   221,800.      500,720.      MT  (+/- 180 meters Scaled)
 JU1411
 JU1411_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ291902(NAD 83)
 JU1411
 JU1411                          SUPERSEDED SURVEY CONTROL
 JU1411
 JU1411  NGVD 29 (11/26/84)   44.717  (m)          146.71   (f) ADJUSTED    1 2
 JU1411
 JU1411.Superseded values are not recommended for survey control.
 JU1411
 JU1411.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1411.See file dsdata.pdf to determine how the superseded data were derived.
 JU1411
 JU1411_MARKER: DB = BENCH MARK DISK
 JU1411_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1411_STAMPING: 146.709 A 3 1931
 JU1411_MARK LOGO: CGS
 JU1411_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1411+STABILITY: SURFACE MOTION
 JU1411
 JU1411  HISTORY     - Date     Condition        Report By
 JU1411  HISTORY     - 1931     MONUMENTED       CGS
 JU1411  HISTORY     - 1934     GOOD             CGS
 JU1411  HISTORY     - 1983     MARK NOT FOUND   LOCSUR
 JU1411
 JU1411                          STATION DESCRIPTION
 JU1411
 JU1411'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JU1411'4.1 MI W FROM NEWARK.
 JU1411'AT ELK MILLS, CECIL COUNTY, 32 FEET SOUTH OF THE SOUTHWEST
 JU1411'CORNER OF THE BALTIMORE AND OHIO RAILROAD STATION, 2-1/2 RAILS
 JU1411'EAST OF A ROAD CROSSING AND 100 FEET SOUTH OF THE SOUTH RAIL OF
 JU1411'THE TRACK.  A STANDARD DISK, STAMPED 146.709 A 3 1931 AND SET
 JU1411'IN THE TOP OF A CONCRETE POST.
 JU1411
 JU1411                          STATION RECOVERY (1983)
 JU1411
 JU1411'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1983
 JU1411'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1133 ***********************************************************************
 JV1133  DESIGNATION -  A 30
 JV1133  PID         -  JV1133
 JV1133  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1133  COUNTRY     -  US
 JV1133  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1133
 JV1133                         *CURRENT SURVEY CONTROL
 JV1133  ______________________________________________________________________
 JV1133* NAD 83(1986) POSITION- 39 17 13.     (N) 076 36 19.     (W)   SCALED
 JV1133* NAVD 88 ORTHO HEIGHT -     4.602 (meters)       15.10  (feet) ADJUSTED
 JV1133  ______________________________________________________________________
 JV1133  GEOID HEIGHT    -        -32.750 (meters)                     GEOID18
 JV1133  DYNAMIC HEIGHT  -          4.600 (meters)       15.09  (feet) COMP
 JV1133  MODELED GRAVITY -    980,103.7   (mgal)                       NAVD 88
 JV1133
 JV1133  VERT ORDER      -  FIRST     CLASS I
 JV1133
 JV1133.The horizontal coordinates were scaled from a map and have
 JV1133.an estimated accuracy of +/- 6 seconds.
 JV1133
 JV1133.The orthometric height was determined by differential leveling and
 JV1133.adjusted by the NATIONAL GEODETIC SURVEY
 JV1133.in June 1991.
 JV1133
 JV1133.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1133.GEOID18 height accuracy estimate available here.
 JV1133
 JV1133.Click photographs - Photos may exist for this station.
 JV1133
 JV1133.The dynamic height is computed by dividing the NAVD 88
 JV1133.geopotential number by the normal gravity value computed on the
 JV1133.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1133.degrees latitude (g = 980.6199 gals.).
 JV1133
 JV1133.The modeled gravity was interpolated from observed gravity values.
 JV1133
 JV1133;                    North         East    Units  Estimated Accuracy
 JV1133;SPC MD       -   179,940.      434,050.      MT  (+/- 180 meters Scaled)
 JV1133
 JV1133_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ615498(NAD 83)
 JV1133
 JV1133                          SUPERSEDED SURVEY CONTROL
 JV1133
 JV1133  NGVD 29 (11/26/84)    4.845  (m)           15.90   (f) ADJUSTED    1 1
 JV1133
 JV1133.Superseded values are not recommended for survey control.
 JV1133
 JV1133.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1133.See file dsdata.pdf to determine how the superseded data were derived.
 JV1133
 JV1133_MARKER: DB = BENCH MARK DISK
 JV1133_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1133_SP_SET: BRIDGE
 JV1133_STAMPING: A 30 1959
 JV1133_MARK LOGO: CGS
 JV1133_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1133
 JV1133  HISTORY     - Date     Condition        Report By
 JV1133  HISTORY     - 1959     MONUMENTED       CGS
 JV1133  HISTORY     - 1958     GOOD             CGS
 JV1133  HISTORY     - 1971     GOOD             NGS
 JV1133  HISTORY     - 19950622 MARK NOT FOUND   USPSQD
 JV1133
 JV1133                          STATION DESCRIPTION
 JV1133
 JV1133'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV1133'AT BALTIMORE.
 JV1133'AT BALTIMORE, ALONG EAST PRATT STREET, BETWEEN EAST FALLS
 JV1133'AVENUE AND PIER 6, ON TOP OF THE EAST END OF THE SOUTH CONCRETE
 JV1133'RETAINING WALL OF THE EAST PRATT STREET BRIDGE OVER JONES FALL
 JV1133'RIVER, 35 1/2 FEET SOUTH OF THE CENTER LINE OF EAST PRATT
 JV1133'STREET, 21 FEET WEST OF THE CENTER LINE OF EAST FALLS AVENUE,
 JV1133'0.7 FEET WEST OF A STEEL LAMPOST, 4 FEET ABOVE THE LEVEL OF THE
 JV1133'SIDEWALK.
 JV1133
 JV1133                          STATION RECOVERY (1971)
 JV1133
 JV1133'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1133'RECOVERED IN GOOD CONDITION.
 JV1133
 JV1133                          STATION RECOVERY (1995)
 JV1133
 JV1133'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1133'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0428 ***********************************************************************
 JV0428  DESIGNATION -  A 31
 JV0428  PID         -  JV0428
 JV0428  STATE/COUNTY-  MD/BALTIMORE
 JV0428  COUNTRY     -  US
 JV0428  USGS QUAD   -  WHITE MARSH (2016)
 JV0428
 JV0428                         *CURRENT SURVEY CONTROL
 JV0428  ______________________________________________________________________
 JV0428* NAD 83(1986) POSITION- 39 23 30.3    (N) 076 25 33.8    (W)   HD_HELD2
 JV0428* NAVD 88 ORTHO HEIGHT -    28.306 (meters)       92.87  (feet) ADJUSTED
 JV0428  ______________________________________________________________________
 JV0428  GEOID HEIGHT    -        -32.951 (meters)                     GEOID18
 JV0428  DYNAMIC HEIGHT  -         28.291 (meters)       92.82  (feet) COMP
 JV0428  MODELED GRAVITY -    980,107.1   (mgal)                       NAVD 88
 JV0428
 JV0428  VERT ORDER      -  FIRST     CLASS II
 JV0428
 JV0428.The horizontal coordinates were established by autonomous hand held GPS
 JV0428.observations and have an estimated accuracy of +/- 10 meters.
 JV0428
 JV0428.The orthometric height was determined by differential leveling and
 JV0428.adjusted by the NATIONAL GEODETIC SURVEY
 JV0428.in July 2019.
 JV0428
 JV0428.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0428.GEOID18 height accuracy estimate available here.
 JV0428
 JV0428.Click photographs - Photos may exist for this station.
 JV0428
 JV0428.The dynamic height is computed by dividing the NAVD 88
 JV0428.geopotential number by the normal gravity value computed on the
 JV0428.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0428.degrees latitude (g = 980.6199 gals.).
 JV0428
 JV0428.The modeled gravity was interpolated from observed gravity values.
 JV0428
 JV0428;                    North         East    Units  Estimated Accuracy
 JV0428;SPC MD       -   191,652.      449,443.      MT  (+/- 10 meters HH2 GPS)
 JV0428
 JV0428_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7719661220(NAD 83)
 JV0428
 JV0428                          SUPERSEDED SURVEY CONTROL
 JV0428
 JV0428  NAVD 88 (06/15/91)   28.334  (m)           92.96   (f) SUPERSEDED  1 1
 JV0428  NGVD 29 (11/26/84)   28.578  (m)           93.76   (f) ADJUSTED    1 1
 JV0428
 JV0428.Superseded values are not recommended for survey control.
 JV0428
 JV0428.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0428.See file dsdata.pdf to determine how the superseded data were derived.
 JV0428
 JV0428_MARKER: DB = BENCH MARK DISK
 JV0428_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0428_STAMPING: A 31 1959
 JV0428_MARK LOGO: CGS
 JV0428_PROJECTION: PROJECTING 5 CENTIMETERS
 JV0428_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0428+STABILITY: SURFACE MOTION
 JV0428_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0428+SATELLITE: SATELLITE OBSERVATIONS - August 31, 2015
 JV0428
 JV0428  HISTORY     - Date     Condition        Report By
 JV0428  HISTORY     - 1959     MONUMENTED       CGS
 JV0428  HISTORY     - 1971     GOOD             NGS
 JV0428  HISTORY     - 19950131 GOOD             MCCRON
 JV0428  HISTORY     - 19960505 MARK NOT FOUND   USPSQD
 JV0428  HISTORY     - 20100202 GOOD             MD-005
 JV0428  HISTORY     - 20100620 GOOD             MDSHA
 JV0428  HISTORY     - 20150831 GOOD             USPSQD
 JV0428
 JV0428                          STATION DESCRIPTION
 JV0428
 JV0428'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0428'6 MI NE FROM GOLDEN RING.
 JV0428'ABOUT 6.0 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE JUNIOR
 JV0428'HIGH SCHOOL AT GOLDEN RING, AT THE JUNCTION OF THE HIGHWAY AND
 JV0428'JOPPA ROAD LEADING NORTHWEST, 40 FEET NORTHWEST OF THE CENTER
 JV0428'LINE OF THE HIGHWAY, 28 FEET SOUTHWEST OF THE CENTER LINE OF THE
 JV0428'ROAD, 6 FEET NORTHEAST OF A 30-INCH ELM TREE, 1.5 FEET SOUTHWEST
 JV0428'OF A METAL WITNESS POST, AND SET IN THE TOP OF A CONCRETE POST
 JV0428'PROJECTING 5 INCHES.
 JV0428
 JV0428                          STATION RECOVERY (1995)
 JV0428
 JV0428'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV0428'RECOVERED AS DESCRIBED.
 JV0428
 JV0428                          STATION RECOVERY (1996)
 JV0428
 JV0428'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0428'MARK NOT FOUND.
 JV0428
 JV0428                          STATION RECOVERY (2010)
 JV0428
 JV0428'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2010 (ATA)
 JV0428'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2010 (ATA).
 JV0428'A COMPLETE DESCRIPTION FOLLOWS - THE STATION IS LOCATED 2.3 MILES
 JV0428'NORTHEAST OF WHITE MARSH IN BALTIMORE COUNTY.
 JV0428'THE STATION IS AT THE WEST CORNER FORMED BY THE INTERSECTION OF EAST
 JV0428'JOPPA ROAD AND PHILADELPHIA ROAD (MARYLAND ROUTE 7) AT THE NORTHEAST
 JV0428'CORNER OF THE PROPERTY KNOWN AS 5535 EAST JOPPA ROAD.
 JV0428'THE STATION IS 23.5 FEET SOUTHWEST OF A WATER VALVE, 40 FEET NORTHWEST
 JV0428'OF THE CENTERLINE OF PHILADELPHIA ROAD, 10 FEET NORTHEAST OF A TRIPLE
 JV0428'TREE AND 72.6 FEET WEST OF A UTILITY POLE ON THE SOUTHEAST SIDE OF
 JV0428'PHILADELPHIA ROAD.
 JV0428'THE STATION IS SET IN A 12-INCH BY 12-INCH CONCRETE MONUMENT WHICH
 JV0428'EXTENDS 0.2 FEET ABOVE THE GROUND SURFACE.
 JV0428
 JV0428                          STATION RECOVERY (2010)
 JV0428
 JV0428'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (DCS)
 JV0428'RECOVERED IN GOOD CONDITION.
 JV0428'
 JV0428'NOTE-THE 30 INCH ELM TREE IN THE 1971 DESCRIPTION IS NOW GONE.  THE
 JV0428'MARK IS 26.3 FT (8.0 M) SOUTHWEST OF THE CENTERLINE OF JOPPA ROAD,
 JV0428'23.4 FT (7.1 M) WEST OF A WATER MANHOLE IN JOPPA ROAD, 11.6 FT (3.5 M)
 JV0428'NORTHEAST OF A 10 INCH (25 CM) TRIPLE TREE AND 28.0 FT (8.5 M)
 JV0428'NORTHWEST OF THE EDGE OF THE LANE OF WESTBOUND MD ROUTE 7
 JV0428'(PHILADELPHIA RD).
 JV0428
 JV0428                          STATION RECOVERY (2015)
 JV0428
 JV0428'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0428'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2162 ***********************************************************************
 JV2162  DESIGNATION -  A 34 RESET 1959 MDSRC
 JV2162  PID         -  JV2162
 JV2162  STATE/COUNTY-  MD/MONTGOMERY
 JV2162  COUNTRY     -  US
 JV2162  USGS QUAD   -  KENSINGTON (2016)
 JV2162
 JV2162                         *CURRENT SURVEY CONTROL
 JV2162  ______________________________________________________________________
 JV2162* NAD 83(1986) POSITION- 39 00 52.     (N) 077 03 19.     (W)   SCALED
 JV2162* NAVD 88 ORTHO HEIGHT -    93.64  (meters)      307.2   (feet) RESET
 JV2162  ______________________________________________________________________
 JV2162  GEOID HEIGHT    -        -31.916 (meters)                     GEOID18
 JV2162  VERT ORDER      -  THIRD
 JV2162
 JV2162.The horizontal coordinates were scaled from a map and have
 JV2162.an estimated accuracy of +/- 6 seconds.
 JV2162
 JV2162.The orthometric height was computed from unverified reset data.
 JV2162
 JV2162.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2162.GEOID18 height accuracy estimate available here.
 JV2162
 JV2162.Click photographs - Photos may exist for this station.
 JV2162
 JV2162;                    North         East    Units  Estimated Accuracy
 JV2162;SPC MD       -   149,610.      395,210.      MT  (+/- 180 meters Scaled)
 JV2162
 JV2162_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ220203(NAD 83)
 JV2162
 JV2162                          SUPERSEDED SURVEY CONTROL
 JV2162
 JV2162  NGVD 29 (??/??/??)   93.85   (m)          307.9    (f) RESET       3  
 JV2162
 JV2162.Superseded values are not recommended for survey control.
 JV2162
 JV2162.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2162.See file dsdata.pdf to determine how the superseded data were derived.
 JV2162
 JV2162_MARKER: DB = BENCH MARK DISK
 JV2162_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2162_SP_SET: STEP
 JV2162_STAMPING: A 34 RESET 1959
 JV2162_MARK LOGO: MDSRC
 JV2162_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2162
 JV2162  HISTORY     - Date     Condition        Report By
 JV2162  HISTORY     - 1959     MONUMENTED       MDSRC
 JV2162  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2162
 JV2162                          STATION DESCRIPTION
 JV2162
 JV2162'DESCRIBED BY MD STATE ROADS COMM 1959
 JV2162'AT FOREST GLEN.
 JV2162'AT THE INTERSECTION OF MD. ROUTE 192 AND MD. ROUTE 391, SET
 JV2162'FLUSH IN THE CONCRETE STEP OF FLOWERS MARKET, 32.8 FT SOUTHWEST
 JV2162'OF THE CENTERLINE OF MD. ROUTE 391, 189 FEET NORTHWEST OF THE
 JV2162'INTERSECTION OF MD. 391 AND MD. 192, AND 40.6 FT NORTHEAST OF
 JV2162'THE NORTHEAST CORNER OF CORWIN RESTAURANT.
 JV2162
 JV2162                          STATION RECOVERY (1987)
 JV2162
 JV2162'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2162'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2233 ***********************************************************************
 JV2233  DESIGNATION -  A 35
 JV2233  PID         -  JV2233
 JV2233  STATE/COUNTY-  MD/FREDERICK
 JV2233  COUNTRY     -  US
 JV2233  USGS QUAD   -  POOLESVILLE (2016)
 JV2233
 JV2233                         *CURRENT SURVEY CONTROL
 JV2233  ______________________________________________________________________
 JV2233* NAD 83(1986) POSITION- 39 14 35.     (N) 077 27 52.     (W)   SCALED
 JV2233* NAVD 88 ORTHO HEIGHT -    72.783 (meters)      238.79  (feet) ADJUSTED
 JV2233  ______________________________________________________________________
 JV2233  GEOID HEIGHT    -        -32.484 (meters)                     GEOID18
 JV2233  DYNAMIC HEIGHT  -         72.744 (meters)      238.66  (feet) COMP
 JV2233  MODELED GRAVITY -    980,083.8   (mgal)                       NAVD 88
 JV2233
 JV2233  VERT ORDER      -  FIRST     CLASS II
 JV2233
 JV2233.The horizontal coordinates were scaled from a map and have
 JV2233.an estimated accuracy of +/- 6 seconds.
 JV2233
 JV2233.The orthometric height was determined by differential leveling and
 JV2233.adjusted by the NATIONAL GEODETIC SURVEY
 JV2233.in June 1991.
 JV2233
 JV2233.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2233.GEOID18 height accuracy estimate available here.
 JV2233
 JV2233.Click photographs - Photos may exist for this station.
 JV2233
 JV2233.The dynamic height is computed by dividing the NAVD 88
 JV2233.geopotential number by the normal gravity value computed on the
 JV2233.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2233.degrees latitude (g = 980.6199 gals.).
 JV2233
 JV2233.The modeled gravity was interpolated from observed gravity values.
 JV2233
 JV2233;                    North         East    Units  Estimated Accuracy
 JV2233;SPC MD       -   175,090.      359,910.      MT  (+/- 180 meters Scaled)
 JV2233
 JV2233_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ873466(NAD 83)
 JV2233
 JV2233                          SUPERSEDED SURVEY CONTROL
 JV2233
 JV2233  NGVD 29 (11/26/84)   73.003  (m)          239.51   (f) ADJUSTED    1 2
 JV2233
 JV2233.Superseded values are not recommended for survey control.
 JV2233
 JV2233.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2233.See file dsdata.pdf to determine how the superseded data were derived.
 JV2233
 JV2233_MARKER: DB = BENCH MARK DISK
 JV2233_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2233_SP_SET: BRIDGE
 JV2233_STAMPING: A 35 1938
 JV2233_MARK LOGO: CGS
 JV2233_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2233
 JV2233  HISTORY     - Date     Condition        Report By
 JV2233  HISTORY     - 1938     MONUMENTED       CGS
 JV2233  HISTORY     - 1979     GOOD             NGS
 JV2233
 JV2233                          STATION DESCRIPTION
 JV2233
 JV2233'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2233'0.7 MI SE FROM TUSCARORA.
 JV2233'0.7 MILE SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2233'STATION AT TUSCARORA, FREDERICK COUNTY, AT BRIDGE 39-A, IN THE
 JV2233'TOP STEP OF THE NORTHWEST CONCRETE WING WALL, 10 FEET SOUTHWEST
 JV2233'OF THE CENTER LINE OF THE SOUTH-BOUND TRACK, 1 FOOT BELOW THE
 JV2233'TOP OF THE BRIDGE SEAT, AND 2 FEET BELOW THE LEVEL OF THE RAILS.
 JV2233'A STANDARD DISK, STAMPED A 35 1938.
 JV2233
 JV2233                          STATION RECOVERY (1979)
 JV2233
 JV2233'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2233'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1395 ***********************************************************************
 JV1395  DESIGNATION -  A 36
 JV1395  PID         -  JV1395
 JV1395  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1395  COUNTRY     -  US
 JV1395  USGS QUAD   -  ROUND BAY (2016)
 JV1395
 JV1395                         *CURRENT SURVEY CONTROL
 JV1395  ______________________________________________________________________
 JV1395* NAD 83(1986) POSITION- 39 01 09.     (N) 076 35 05.     (W)   SCALED
 JV1395* NAVD 88 ORTHO HEIGHT -    27.604 (meters)       90.56  (feet) ADJUSTED
 JV1395  ______________________________________________________________________
 JV1395  GEOID HEIGHT    -        -33.061 (meters)                     GEOID18
 JV1395  DYNAMIC HEIGHT  -         27.589 (meters)       90.51  (feet) COMP
 JV1395  MODELED GRAVITY -    980,074.6   (mgal)                       NAVD 88
 JV1395
 JV1395  VERT ORDER      -  FIRST     CLASS II
 JV1395
 JV1395.The horizontal coordinates were scaled from a map and have
 JV1395.an estimated accuracy of +/- 6 seconds.
 JV1395
 JV1395.The orthometric height was determined by differential leveling and
 JV1395.adjusted by the NATIONAL GEODETIC SURVEY
 JV1395.in June 1991.
 JV1395
 JV1395.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1395.GEOID18 height accuracy estimate available here.
 JV1395
 JV1395.Click photographs - Photos may exist for this station.
 JV1395
 JV1395.The dynamic height is computed by dividing the NAVD 88
 JV1395.geopotential number by the normal gravity value computed on the
 JV1395.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1395.degrees latitude (g = 980.6199 gals.).
 JV1395
 JV1395.The modeled gravity was interpolated from observed gravity values.
 JV1395
 JV1395;                    North         East    Units  Estimated Accuracy
 JV1395;SPC MD       -   150,220.      435,960.      MT  (+/- 180 meters Scaled)
 JV1395
 JV1395_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ628200(NAD 83)
 JV1395
 JV1395                          SUPERSEDED SURVEY CONTROL
 JV1395
 JV1395  NGVD 29 (11/26/84)   27.850  (m)           91.37   (f) ADJUSTED    1 2
 JV1395
 JV1395.Superseded values are not recommended for survey control.
 JV1395
 JV1395.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1395.See file dsdata.pdf to determine how the superseded data were derived.
 JV1395
 JV1395_MARKER: DB = BENCH MARK DISK
 JV1395_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1395_SP_SET: CULVERT
 JV1395_STAMPING: A 36 1938
 JV1395_MARK LOGO: CGS
 JV1395_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1395
 JV1395  HISTORY     - Date     Condition        Report By
 JV1395  HISTORY     - 1938     MONUMENTED       CGS
 JV1395  HISTORY     - 20000217 MARK NOT FOUND   USPSQD
 JV1395
 JV1395                          STATION DESCRIPTION
 JV1395
 JV1395'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV1395'1.2 MI SE FROM CROWNSVILLE.
 JV1395'1.2 MILES SOUTHEAST ALONG STATE HIGHWAY 178 FROM THE POST
 JV1395'OFFICE AT CROWNSVILLE, ANNE ARUNDEL COUNTY, AT THE BOTTOM OF A
 JV1395'LONG GRADE, 30 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY,
 JV1395'IN THE TOP OF A CULVERT, AND ABOUT 2 FEET LOWER THAN THE
 JV1395'HIGHWAY.  A STANDARD DISK, STAMPED A 36 1938.
 JV1395
 JV1395                          STATION RECOVERY (2000)
 JV1395
 JV1395'RECOVERY NOTE BY US POWER SQUADRON 2000
 JV1395'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0940 ***********************************************************************
 HV0940  DESIGNATION -  A 37
 HV0940  PID         -  HV0940
 HV0940  STATE/COUNTY-  MD/CALVERT
 HV0940  COUNTRY     -  US
 HV0940  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0940
 HV0940                         *CURRENT SURVEY CONTROL
 HV0940  ______________________________________________________________________
 HV0940* NAD 83(1986) POSITION- 38 34 32.     (N) 076 36 05.     (W)   SCALED
 HV0940* NAVD 88 ORTHO HEIGHT -    35.220 (meters)      115.55  (feet) ADJUSTED
 HV0940  ______________________________________________________________________
 HV0940  GEOID HEIGHT    -        -33.744 (meters)                     GEOID18
 HV0940  DYNAMIC HEIGHT  -         35.199 (meters)      115.48  (feet) COMP
 HV0940  MODELED GRAVITY -    980,035.2   (mgal)                       NAVD 88
 HV0940
 HV0940  VERT ORDER      -  FIRST     CLASS II
 HV0940
 HV0940.The horizontal coordinates were scaled from a map and have
 HV0940.an estimated accuracy of +/- 6 seconds.
 HV0940
 HV0940.The orthometric height was determined by differential leveling and
 HV0940.adjusted by the NATIONAL GEODETIC SURVEY
 HV0940.in June 1991.
 HV0940
 HV0940.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0940.GEOID18 height accuracy estimate available here.
 HV0940
 HV0940.Click photographs - Photos may exist for this station.
 HV0940
 HV0940.The dynamic height is computed by dividing the NAVD 88
 HV0940.geopotential number by the normal gravity value computed on the
 HV0940.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0940.degrees latitude (g = 980.6199 gals.).
 HV0940
 HV0940.The modeled gravity was interpolated from observed gravity values.
 HV0940
 HV0940;                    North         East    Units  Estimated Accuracy
 HV0940;SPC MD       -   100,970.      434,730.      MT  (+/- 180 meters Scaled)
 HV0940
 HV0940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH605708(NAD 83)
 HV0940
 HV0940                          SUPERSEDED SURVEY CONTROL
 HV0940
 HV0940  NGVD 29 (11/26/84)   35.509  (m)          116.50   (f) ADJUSTED    1 2
 HV0940
 HV0940.Superseded values are not recommended for survey control.
 HV0940
 HV0940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0940.See file dsdata.pdf to determine how the superseded data were derived.
 HV0940
 HV0940_MARKER: DB = BENCH MARK DISK
 HV0940_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0940_STAMPING: A 37 1941
 HV0940_MARK LOGO: CGS
 HV0940_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0940+STABILITY: SURFACE MOTION
 HV0940
 HV0940  HISTORY     - Date     Condition        Report By
 HV0940  HISTORY     - 1941     MONUMENTED       CGS
 HV0940  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0940  HISTORY     - 19950625 MARK NOT FOUND   USPSQD
 HV0940
 HV0940                          STATION DESCRIPTION
 HV0940
 HV0940'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0940'3 MI N FROM PRINCE FREDERICK.
 HV0940'3.0 MILES NORTH ALONG STATE HIGHWAY 2 FROM THE COUNTY COURTHOUSE
 HV0940'AT PRINCE FREDERICK, CALVERT COUNTY, ON THE OLD HIGHWAY, AT THE
 HV0940'TOP OF THE HILL SOUTH OF HUNTING CREEK, OPPOSITE THE ENTRANCE TO A
 HV0940'FARMYARD, 22 FEET EAST OF THE CENTER LINE OF THE OLD HIGHWAY,
 HV0940'AND AT A WHITE WOODEN WITNESS POST.  A STANDARD DISK STAMPED
 HV0940'A 37 1941 AND SET IN THE TOP OF A CONCRETE POST.  NOTE-- IT WAS
 HV0940'REPORTED IN JANUARY 1945 THAT A NEW HIGHWAY HAS BEEN MADE IN THIS
 HV0940'LOCALITY AND THE MARK IS ABOUT 170 FEET WEST OF ITS CENTER LINE.
 HV0940'IT CANNOT BE SEEN FROM THE NEW HIGHWAY.
 HV0940
 HV0940                          STATION RECOVERY (1971)
 HV0940
 HV0940'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0940'MARK NOT FOUND.
 HV0940
 HV0940                          STATION RECOVERY (1995)
 HV0940
 HV0940'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0940'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0325 ***********************************************************************
 HV0325  DESIGNATION -  A 38 RESET
 HV0325  PID         -  HV0325
 HV0325  STATE/COUNTY-  MD/ST MARYS
 HV0325  COUNTRY     -  US
 HV0325  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0325
 HV0325                         *CURRENT SURVEY CONTROL
 HV0325  ______________________________________________________________________
 HV0325* NAD 83(1986) POSITION- 38 17 06.     (N) 076 28 29.     (W)   SCALED
 HV0325* NAVD 88 ORTHO HEIGHT -    31.603 (meters)      103.68  (feet) ADJUSTED
 HV0325  ______________________________________________________________________
 HV0325  GEOID HEIGHT    -        -34.401 (meters)                     GEOID18
 HV0325  DYNAMIC HEIGHT  -         31.584 (meters)      103.62  (feet) COMP
 HV0325  MODELED GRAVITY -    980,013.4   (mgal)                       NAVD 88
 HV0325
 HV0325  VERT ORDER      -  FIRST     CLASS II
 HV0325
 HV0325.The horizontal coordinates were scaled from a map and have
 HV0325.an estimated accuracy of +/- 6 seconds.
 HV0325
 HV0325.The orthometric height was determined by differential leveling and
 HV0325.adjusted by the NATIONAL GEODETIC SURVEY
 HV0325.in June 1991.
 HV0325
 HV0325.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0325.GEOID18 height accuracy estimate available here.
 HV0325
 HV0325.Click photographs - Photos may exist for this station.
 HV0325
 HV0325.The dynamic height is computed by dividing the NAVD 88
 HV0325.geopotential number by the normal gravity value computed on the
 HV0325.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0325.degrees latitude (g = 980.6199 gals.).
 HV0325
 HV0325.The modeled gravity was interpolated from observed gravity values.
 HV0325
 HV0325;                    North         East    Units  Estimated Accuracy
 HV0325;SPC MD       -    68,770.      445,960.      MT  (+/- 180 meters Scaled)
 HV0325
 HV0325_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH710384(NAD 83)
 HV0325
 HV0325                          SUPERSEDED SURVEY CONTROL
 HV0325
 HV0325  NGVD 29 (11/26/84)   31.855  (m)          104.51   (f) ADJUSTED    1 2
 HV0325
 HV0325.Superseded values are not recommended for survey control.
 HV0325
 HV0325.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0325.See file dsdata.pdf to determine how the superseded data were derived.
 HV0325
 HV0325_MARKER: DB = BENCH MARK DISK
 HV0325_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0325_STAMPING: A 38 RESET 1943
 HV0325_MARK LOGO: CGS
 HV0325_PROJECTION: FLUSH
 HV0325_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0325+STABILITY: SURFACE MOTION
 HV0325
 HV0325  HISTORY     - Date     Condition        Report By
 HV0325  HISTORY     - 1943     MONUMENTED       USN
 HV0325  HISTORY     - 1971     GOOD             NGS
 HV0325  HISTORY     - 1973     GOOD             NGS
 HV0325
 HV0325                          STATION DESCRIPTION
 HV0325
 HV0325'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0325'1.4 MI SE FROM CALIFORNIA.
 HV0325'ABOUT 1.45 MILES SOUTHEAST ALONG STATE HIGHWAY 235 FROM THE
 HV0325'POST OFFICE AT CALIFORNIA, 0.3 MILE NORTHWEST OF THE HEART OF
 HV0325'MARY CHURCH, 175.6 FEET SOUTHWEST OF AND ACROSS THE HIGHWAY FROM
 HV0325'THE WEST CORNER OF A HOUSE, 66.6 FEET SOUTHWEST OF THE CENTER LINE
 HV0325'OF THE HIGHWAY, 65.5 FEET WEST OF A POWER LINE POLE WITH A
 HV0325'TRANSFORMER, 8 FEET SOUTHEAST OF THE CENTER OF A TRAIL, 1 FOOT
 HV0325'EAST OF A METAL WITNESS POST, 2 FEET BELOW THE LEVEL OF THE
 HV0325'HIGHWAY AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE LEVEL
 HV0325'OF THE GROUND.
 HV0325
 HV0325                          STATION RECOVERY (1973)
 HV0325
 HV0325'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973
 HV0325'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0326 ***********************************************************************
 HV0326  DESIGNATION -  A 38 RESET
 HV0326  PID         -  HV0326
 HV0326  STATE/COUNTY-  MD/ST MARYS
 HV0326  COUNTRY     -  US
 HV0326  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0326
 HV0326                         *CURRENT SURVEY CONTROL
 HV0326  ______________________________________________________________________
 HV0326* NAD 83(1986) POSITION- 38 17 06.     (N) 076 28 29.     (W)   SCALED
 HV0326* NAVD 88 ORTHO HEIGHT -    33.64  (meters)      110.4   (feet) RESET
 HV0326  ______________________________________________________________________
 HV0326  GEOID HEIGHT    -        -34.401 (meters)                     GEOID18
 HV0326  VERT ORDER      -  THIRD
 HV0326
 HV0326.The horizontal coordinates were scaled from a map and have
 HV0326.an estimated accuracy of +/- 6 seconds.
 HV0326
 HV0326.The orthometric height was computed from unverified reset data.
 HV0326
 HV0326.No vertical observational check was made to the station.
 HV0326
 HV0326.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0326.GEOID18 height accuracy estimate available here.
 HV0326
 HV0326.Click photographs - Photos may exist for this station.
 HV0326
 HV0326;                    North         East    Units  Estimated Accuracy
 HV0326;SPC MD       -    68,770.      445,960.      MT  (+/- 180 meters Scaled)
 HV0326
 HV0326_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH710384(NAD 83)
 HV0326
 HV0326                          SUPERSEDED SURVEY CONTROL
 HV0326
 HV0326  NGVD 29 (??/??/??)   33.89   (m)          111.2    (f) RESET       3  
 HV0326
 HV0326.Superseded values are not recommended for survey control.
 HV0326
 HV0326.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0326.See file dsdata.pdf to determine how the superseded data were derived.
 HV0326
 HV0326_MARKER: DV = VERTICAL CONTROL DISK
 HV0326_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0326_STAMPING: A 38 RESET 1973
 HV0326_MARK LOGO: NGS
 HV0326_PROJECTION: FLUSH
 HV0326_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0326+STABILITY: SURFACE MOTION
 HV0326
 HV0326  HISTORY     - Date     Condition        Report By
 HV0326  HISTORY     - 1973     MONUMENTED       NGS
 HV0326
 HV0326                          STATION DESCRIPTION
 HV0326
 HV0326'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973
 HV0326'1.5 MI SE FROM CALIFORNIA.
 HV0326'THE MARK IS LOCATED ABOUT 2 MILES NORTHWEST OF LEXINGTON PARK,
 HV0326'1 1/2 MILE SOUTHEAST OF CALIFORNIA AND ON THE NORTHEAST SIDE
 HV0326'OF STATE HIGHWAY 235.  THE PROPERTY IS OWNED BY MR. CEDOL
 HV0326'BARNES.  THE DISK IS A STANDARD DISK SET IN THE TOP OF A 10-INCH
 HV0326'ROUND CONCRETE POST WHICH IS FLUSH WITH THE SURFACE.  IT IS 100
 HV0326'FEET NORTHEAST OF THE CENTER OF STATE HIGHWAY 235, 52.2 FEET
 HV0326'NORTH OF THE NORTHEAST CORNER OF A SMALL HOUSE, 33 SOUTHEAST
 HV0326'OF A SMALL PUMP HOUSE, 28.2 FEET EAST OF THE SOUTHEAST CORNER
 HV0326'OF MR. CEDOLS HOUSE AND 8 FEET NORTHEAST OF A 30-INCH TREE.
 HV0326'TO REACH FROM THE POST OFFICE IN CALIFORNIA, GO SOUTHEAST ON
 HV0326'STATE HIGHWAY 235 FOR 1.45 MILE TO THE MARK ON THE LEFT
 HV0326'BETWEEN THE TWO SMALL HOUSES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1379 ***********************************************************************
 JV1379  DESIGNATION -  A 39
 JV1379  PID         -  JV1379
 JV1379  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1379  COUNTRY     -  US
 JV1379  USGS QUAD   -  ODENTON (2016)
 JV1379
 JV1379                         *CURRENT SURVEY CONTROL
 JV1379  ______________________________________________________________________
 JV1379* NAD 83(1986) POSITION- 39 05 11.8    (N) 076 42 23.1    (W)   HD_HELD2
 JV1379* NAVD 88 ORTHO HEIGHT -    49.567 (meters)      162.62  (feet) ADJUSTED
 JV1379  ______________________________________________________________________
 JV1379  GEOID HEIGHT    -        -32.658 (meters)                     GEOID18
 JV1379  DYNAMIC HEIGHT  -         49.540 (meters)      162.53  (feet) COMP
 JV1379  MODELED GRAVITY -    980,083.4   (mgal)                       NAVD 88
 JV1379
 JV1379  VERT ORDER      -  FIRST     CLASS II
 JV1379
 JV1379.The horizontal coordinates were established by autonomous hand held GPS
 JV1379.observations and have an estimated accuracy of +/- 10 meters.
 JV1379
 JV1379.The orthometric height was determined by differential leveling and
 JV1379.adjusted by the NATIONAL GEODETIC SURVEY
 JV1379.in June 1991.
 JV1379
 JV1379.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1379.GEOID18 height accuracy estimate available here.
 JV1379
 JV1379.Click photographs - Photos may exist for this station.
 JV1379
 JV1379.The dynamic height is computed by dividing the NAVD 88
 JV1379.geopotential number by the normal gravity value computed on the
 JV1379.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1379.degrees latitude (g = 980.6199 gals.).
 JV1379
 JV1379.The modeled gravity was interpolated from observed gravity values.
 JV1379
 JV1379;                    North         East    Units  Estimated Accuracy
 JV1379;SPC MD       -   157,662.      425,400.      MT  (+/- 10 meters HH2 GPS)
 JV1379
 JV1379_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5241427773(NAD 83)
 JV1379
 JV1379                          SUPERSEDED SURVEY CONTROL
 JV1379
 JV1379  NGVD 29 (11/26/84)   49.795  (m)          163.37   (f) ADJUSTED    1 2
 JV1379
 JV1379.Superseded values are not recommended for survey control.
 JV1379
 JV1379.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1379.See file dsdata.pdf to determine how the superseded data were derived.
 JV1379
 JV1379_MARKER: DB = BENCH MARK DISK
 JV1379_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1379+WITH SETTING: PAVEMENT
 JV1379_SP_SET: POLE BASE
 JV1379_STAMPING: A 39 1941
 JV1379_MARK LOGO: CGS
 JV1379_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1379+STABILITY: SURFACE MOTION
 JV1379
 JV1379  HISTORY     - Date     Condition        Report By
 JV1379  HISTORY     - 1941     MONUMENTED       CGS
 JV1379  HISTORY     - 1952     GOOD             CGS
 JV1379  HISTORY     - 20090214 GOOD             GEOCAC
 JV1379
 JV1379                          STATION DESCRIPTION
 JV1379
 JV1379'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1379'AT ODENTON.
 JV1379'AT ODENTON, ANNE ARUNDEL COUNTY, 53 FEET SOUTHWEST OF THE
 JV1379'SOUTHWEST CORNER OF THE PENNSYLVANIA RAILROAD STATION, AT A
 JV1379'POWER-TRANSMISSION LINE POLE, IN THE TOP OF THE SOUTHWEST CORNER
 JV1379'OF THE CONCRETE BASE, AND 38.3 FEET EAST OF THE EAST RAIL OF THE
 JV1379'EAST TRACK.  A STANDARD DISK, STAMPED A 39 1941.
 JV1379
 JV1379                          STATION RECOVERY (1952)
 JV1379
 JV1379'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952
 JV1379'RECOVERED IN GOOD CONDITION.
 JV1379
 JV1379                          STATION RECOVERY (2009)
 JV1379
 JV1379'RECOVERY NOTE BY GEOCACHING 2009 (EJK)
 JV1379'MARK IS W OF THE W EDGE OF THE PARKING AREA FOR THE ODENTON MARC
 JV1379'STATION PLATFORM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0566 ***********************************************************************
 JV0566  DESIGNATION -  A 4
 JV0566  PID         -  JV0566
 JV0566  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0566  COUNTRY     -  US
 JV0566  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0566
 JV0566                         *CURRENT SURVEY CONTROL
 JV0566  ______________________________________________________________________
 JV0566* NAD 83(1986) POSITION- 39 16 33.     (N) 076 37 20.     (W)   SCALED
 JV0566* NAVD 88 ORTHO HEIGHT -     4.088 (meters)       13.41  (feet) ADJUSTED
 JV0566  ______________________________________________________________________
 JV0566  GEOID HEIGHT    -        -32.723 (meters)                     GEOID18
 JV0566  DYNAMIC HEIGHT  -          4.086 (meters)       13.41  (feet) COMP
 JV0566  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV0566
 JV0566  VERT ORDER      -  FIRST     CLASS I
 JV0566
 JV0566.The horizontal coordinates were scaled from a map and have
 JV0566.an estimated accuracy of +/- 6 seconds.
 JV0566
 JV0566.The orthometric height was determined by differential leveling and
 JV0566.adjusted by the NATIONAL GEODETIC SURVEY
 JV0566.in June 1991.
 JV0566
 JV0566.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0566.GEOID18 height accuracy estimate available here.
 JV0566
 JV0566.Click photographs - Photos may exist for this station.
 JV0566
 JV0566.The dynamic height is computed by dividing the NAVD 88
 JV0566.geopotential number by the normal gravity value computed on the
 JV0566.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0566.degrees latitude (g = 980.6199 gals.).
 JV0566
 JV0566.The modeled gravity was interpolated from observed gravity values.
 JV0566
 JV0566;                    North         East    Units  Estimated Accuracy
 JV0566;SPC MD       -   178,700.      432,600.      MT  (+/- 180 meters Scaled)
 JV0566
 JV0566_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ600486(NAD 83)
 JV0566
 JV0566                          SUPERSEDED SURVEY CONTROL
 JV0566
 JV0566  NGVD 29 (11/26/84)    4.330  (m)           14.21   (f) ADJUSTED    1 1
 JV0566
 JV0566.Superseded values are not recommended for survey control.
 JV0566
 JV0566.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0566.See file dsdata.pdf to determine how the superseded data were derived.
 JV0566
 JV0566_MARKER: DB = BENCH MARK DISK
 JV0566_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0566_SP_SET: FOUNDATION
 JV0566_STAMPING: A 4 1933
 JV0566_MARK LOGO: CGS
 JV0566_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0566
 JV0566  HISTORY     - Date     Condition        Report By
 JV0566  HISTORY     - 1933     MONUMENTED       CGS
 JV0566  HISTORY     - 1971     GOOD             NGS
 JV0566
 JV0566                          STATION DESCRIPTION
 JV0566
 JV0566'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0566'AT BALTIMORE.
 JV0566'AT BALTIMORE, ABOUT 0.9 MILE SOUTH ALONG THE BALTIMORE AND OHIO
 JV0566'RAILROAD FROM THE CAMDEN STATION, SET IN THE TOP OF THE NORTHEAST
 JV0566'END OF THE CONCRETE FOUNDATION FOR THE FIRST METAL PIER NORTHWEST
 JV0566'OF THE SOUTHEAST END OF THE OSTEND STREET BRIDGE OVER THE TRACK,
 JV0566'2 1/2 FEET SOUTHWEST OF THE NORTHEAST END OF THE FOUNDATION,
 JV0566'AND ABOUT 3 FEET ABOVE THE LEVEL OF THE TRACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4142 ***********************************************************************
 HV4142  DESIGNATION -  A 40
 HV4142  PID         -  HV4142
 HV4142  STATE/COUNTY-  MD/CHARLES
 HV4142  COUNTRY     -  US
 HV4142  USGS QUAD   -  LA PLATA (2016)
 HV4142
 HV4142                         *CURRENT SURVEY CONTROL
 HV4142  ______________________________________________________________________
 HV4142* NAD 83(1986) POSITION- 38 37 00.     (N) 076 53 17.     (W)   SCALED
 HV4142* NAVD 88 ORTHO HEIGHT -    59.490 (meters)      195.18  (feet) ADJUSTED
 HV4142  ______________________________________________________________________
 HV4142  GEOID HEIGHT    -        -33.008 (meters)                     GEOID18
 HV4142  DYNAMIC HEIGHT  -         59.455 (meters)      195.06  (feet) COMP
 HV4142  MODELED GRAVITY -    980,037.7   (mgal)                       NAVD 88
 HV4142
 HV4142  VERT ORDER      -  FIRST     CLASS II
 HV4142
 HV4142.The horizontal coordinates were scaled from a map and have
 HV4142.an estimated accuracy of +/- 6 seconds.
 HV4142
 HV4142.The orthometric height was determined by differential leveling and
 HV4142.adjusted by the NATIONAL GEODETIC SURVEY
 HV4142.in June 1991.
 HV4142
 HV4142.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4142.GEOID18 height accuracy estimate available here.
 HV4142
 HV4142.Click photographs - Photos may exist for this station.
 HV4142
 HV4142.The dynamic height is computed by dividing the NAVD 88
 HV4142.geopotential number by the normal gravity value computed on the
 HV4142.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV4142.degrees latitude (g = 980.6199 gals.).
 HV4142
 HV4142.The modeled gravity was interpolated from observed gravity values.
 HV4142
 HV4142;                    North         East    Units  Estimated Accuracy
 HV4142;SPC MD       -   105,460.      409,750.      MT  (+/- 180 meters Scaled)
 HV4142
 HV4142_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH356759(NAD 83)
 HV4142
 HV4142                          SUPERSEDED SURVEY CONTROL
 HV4142
 HV4142  NGVD 29 (11/26/84)   59.742  (m)          196.00   (f) ADJUSTED    1 2
 HV4142
 HV4142.Superseded values are not recommended for survey control.
 HV4142
 HV4142.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4142.See file dsdata.pdf to determine how the superseded data were derived.
 HV4142
 HV4142_MARKER: DB = BENCH MARK DISK
 HV4142_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4142_STAMPING: A 40 1941
 HV4142_MARK LOGO: CGS
 HV4142_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4142+STABILITY: SURFACE MOTION
 HV4142
 HV4142  HISTORY     - Date     Condition        Report By
 HV4142  HISTORY     - 1941     MONUMENTED       CGS
 HV4142
 HV4142                          STATION DESCRIPTION
 HV4142
 HV4142'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV4142'1.2 MI SE FROM WALDORF.
 HV4142'ABOUT 1.2 MILES SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE PENNSYLVANIA
 HV4142'RAILROAD STATION AT WALDORF, CHARLES COUNTY, AT THE JUNCTION OF A
 HV4142'ROAD LEADING NORTH TO A 2-STORY WHITE FARM HOUSE, 49.5 FEET NORTHWEST
 HV4142'OF POWER-TRANSMISSION LINE POLE 248, AT A 12 INCH CONCRETE CULVERT,
 HV4142'IN THE TOP OF THE WEST CORNER OF THE SOUTH HEAD WALL, AT THE JUNCTION
 HV4142'OF A ROAD LEADING SOUTH, 22.3 FEET SOUTH OF THE CENTERLINE OF THE
 HV4142'HIGHWAY, AND 19 FEET WEST OF THE CENTERLINE OF THE ROAD. A STANDARD
 HV4142'DISK, STAMPED 'A 40 1941'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0686 ***********************************************************************
 HV0686  DESIGNATION -  A 41
 HV0686  PID         -  HV0686
 HV0686  STATE/COUNTY-  MD/ST MARYS
 HV0686  COUNTRY     -  US
 HV0686  USGS QUAD   -  LEONARDTOWN (2016)
 HV0686
 HV0686                         *CURRENT SURVEY CONTROL
 HV0686  ______________________________________________________________________
 HV0686* NAD 83(1986) POSITION- 38 21 54.     (N) 076 40 59.     (W)   SCALED
 HV0686* NAVD 88 ORTHO HEIGHT -    42.871 (meters)      140.65  (feet) POSTED
 HV0686  ______________________________________________________________________
 HV0686  GEOID HEIGHT    -        -33.772 (meters)                     GEOID18
 HV0686  DYNAMIC HEIGHT  -         42.84  (meters)      140.6   (feet) COMP
 HV0686  MODELED GRAVITY -    980,029.9   (mgal)                       NAVD 88
 HV0686
 HV0686  VERT ORDER      -  * POSTED, SEE BELOW
 HV0686
 HV0686.The horizontal coordinates were scaled from a map and have
 HV0686.an estimated accuracy of +/- 6 seconds.
 HV0686
 HV0686.The orthometric height was determined by differential leveling
 HV0686.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0686
 HV0686.* This is a POSTED BENCH MARK height.
 HV0686
 HV0686.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0686.GEOID18 height accuracy estimate available here.
 HV0686
 HV0686.Click photographs - Photos may exist for this station.
 HV0686
 HV0686.The dynamic height is computed by dividing the NAVD 88
 HV0686.geopotential number by the normal gravity value computed on the
 HV0686.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0686.degrees latitude (g = 980.6199 gals.).
 HV0686
 HV0686.The modeled gravity was interpolated from observed gravity values.
 HV0686
 HV0686;                    North         East    Units  Estimated Accuracy
 HV0686;SPC MD       -    77,570.      427,700.      MT  (+/- 180 meters Scaled)
 HV0686
 HV0686_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH529476(NAD 83)
 HV0686
 HV0686                          SUPERSEDED SURVEY CONTROL
 HV0686
 HV0686  NGVD 29 (11/26/84)   43.149  (m)          141.56   (f) ADJUSTED    1 2
 HV0686
 HV0686.Superseded values are not recommended for survey control.
 HV0686
 HV0686.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0686.See file dsdata.pdf to determine how the superseded data were derived.
 HV0686
 HV0686_MARKER: DB = BENCH MARK DISK
 HV0686_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0686_SP_SET: CULVERT
 HV0686_STAMPING: A 41 1941
 HV0686_MARK LOGO: CGS
 HV0686_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0686
 HV0686  HISTORY     - Date     Condition        Report By
 HV0686  HISTORY     - 1941     MONUMENTED       CGS
 HV0686  HISTORY     - 20010210 MARK NOT FOUND   USPSQD
 HV0686
 HV0686                          STATION DESCRIPTION
 HV0686
 HV0686'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0686'6.6 MI NW FROM LEONARDTOWN.
 HV0686'ABOUT 6.6 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0686'OFFICE AT LEONARDTOWN, SAINT MARYS COUNTY, AT THE NORTH END OF A
 HV0686'SOUTHWEST-TO-NORTH CURVE, ABOUT 238 FEET NORTH OF THE CENTER LINE
 HV0686'OF A ROAD LEADING NORTHEAST, 89 FEET NORTHWEST OF A GUY POLE,
 HV0686'68 FEET SOUTHWEST OF POWER-TRANSMISSION LINE POLE 814, AT A
 HV0686'12-INCH CONCRETE CULVERT, IN THE TOP OF THE SOUTH CORNER OF THE
 HV0686'WEST HEAD WALL, AND 20 FEET WEST OF THE CENTER LINE OF THE HIGHWAY.
 HV0686'A STANDARD DISK, STAMPED A 41 1941.
 HV0686
 HV0686                          STATION RECOVERY (2001)
 HV0686
 HV0686'RECOVERY NOTE BY US POWER SQUADRON 2001
 HV0686'THE VICINITY OF THE STATION MARK WAS LOCATED WITH GPS, BUT NONE OF THE
 HV0686'REFERENCES COULD BE LOCATED.  SUSPECT THAT WIDENING OF THE HIGHWAY HAS
 HV0686'COVERED THE STATION MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3215 ***********************************************************************
 JV3215  DESIGNATION -  A 42
 JV3215  PID         -  JV3215
 JV3215  STATE/COUNTY-  MD/WASHINGTON
 JV3215  COUNTRY     -  US
 JV3215  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3215
 JV3215                         *CURRENT SURVEY CONTROL
 JV3215  ______________________________________________________________________
 JV3215* NAD 83(1986) POSITION- 39 37 15.     (N) 077 47 48.     (W)   SCALED
 JV3215* NAVD 88 ORTHO HEIGHT -   140.627 (meters)      461.37  (feet) ADJUSTED
 JV3215  ______________________________________________________________________
 JV3215  GEOID HEIGHT    -        -34.249 (meters)                     GEOID18
 JV3215  DYNAMIC HEIGHT  -        140.544 (meters)      461.10  (feet) COMP
 JV3215  MODELED GRAVITY -    980,034.4   (mgal)                       NAVD 88
 JV3215
 JV3215  VERT ORDER      -  FIRST     CLASS II
 JV3215
 JV3215.The horizontal coordinates were scaled from a map and have
 JV3215.an estimated accuracy of +/- 6 seconds.
 JV3215
 JV3215.The orthometric height was determined by differential leveling and
 JV3215.adjusted by the NATIONAL GEODETIC SURVEY
 JV3215.in June 1991.
 JV3215
 JV3215.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3215.GEOID18 height accuracy estimate available here.
 JV3215
 JV3215.Click photographs - Photos may exist for this station.
 JV3215
 JV3215.The dynamic height is computed by dividing the NAVD 88
 JV3215.geopotential number by the normal gravity value computed on the
 JV3215.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3215.degrees latitude (g = 980.6199 gals.).
 JV3215
 JV3215.The modeled gravity was interpolated from observed gravity values.
 JV3215
 JV3215;                    North         East    Units  Estimated Accuracy
 JV3215;SPC MD       -   217,230.      331,590.      MT  (+/- 180 meters Scaled)
 JV3215
 JV3215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ599894(NAD 83)
 JV3215
 JV3215                          SUPERSEDED SURVEY CONTROL
 JV3215
 JV3215  NGVD 29 (11/26/84)  140.832  (m)          462.05   (f) ADJUSTED    1 2
 JV3215
 JV3215.Superseded values are not recommended for survey control.
 JV3215
 JV3215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3215.See file dsdata.pdf to determine how the superseded data were derived.
 JV3215
 JV3215_MARKER: DB = BENCH MARK DISK
 JV3215_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3215_STAMPING: A 42 1941
 JV3215_MARK LOGO: CGS
 JV3215_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3215+STABILITY: SURFACE MOTION
 JV3215
 JV3215  HISTORY     - Date     Condition        Report By
 JV3215  HISTORY     - 1941     MONUMENTED       CGS
 JV3215  HISTORY     - 1974     MARK NOT FOUND   USGS
 JV3215
 JV3215                          STATION DESCRIPTION
 JV3215
 JV3215'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV3215'4.2 MI SW FROM HAGERSTOWN.
 JV3215'4.2 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JV3215'THE STATION AT HAGERSTOWN, AT A PRIVATE ROAD CROSSING, 98.8
 JV3215'FEET SOUTHWEST OF MILE-POST 91, 28 FEET SOUTH OF THE SOUTH RAIL
 JV3215'OF THE EAST-BOUND TRACK, 23 FEET NORTHEAST OF THE RIGHT-OF-WAY
 JV3215'FENCE, 1 FOOT NORTHEAST OF A WHITE MARKER POST STENCILED USBM.
 JV3215
 JV3215                          STATION RECOVERY (1974)
 JV3215
 JV3215'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1974
 JV3215'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0017 ***********************************************************************
 JW0017  DESIGNATION -  A 43
 JW0017  PID         -  JW0017
 JW0017  STATE/COUNTY-  MD/WASHINGTON
 JW0017  COUNTRY     -  US
 JW0017  USGS QUAD   -  HANCOCK (2016)
 JW0017
 JW0017                         *CURRENT SURVEY CONTROL
 JW0017  ______________________________________________________________________
 JW0017* NAD 83(1986) POSITION- 39 41 51.4    (N) 078 11 12.0    (W)   HD_HELD2
 JW0017* NAVD 88 ORTHO HEIGHT -   131.362 (meters)      430.98  (feet) ADJUSTED
 JW0017  ______________________________________________________________________
 JW0017  GEOID HEIGHT    -        -34.014 (meters)                     GEOID18
 JW0017  DYNAMIC HEIGHT  -        131.287 (meters)      430.73  (feet) COMP
 JW0017  MODELED GRAVITY -    980,052.8   (mgal)                       NAVD 88
 JW0017
 JW0017  VERT ORDER      -  FIRST     CLASS II
 JW0017
 JW0017.The horizontal coordinates were established by autonomous hand held GPS
 JW0017.observations and have an estimated accuracy of +/- 10 meters.
 JW0017
 JW0017.The orthometric height was determined by differential leveling and
 JW0017.adjusted by the NATIONAL GEODETIC SURVEY
 JW0017.in June 1991.
 JW0017
 JW0017.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0017.GEOID18 height accuracy estimate available here.
 JW0017
 JW0017.Click photographs - Photos may exist for this station.
 JW0017
 JW0017.The dynamic height is computed by dividing the NAVD 88
 JW0017.geopotential number by the normal gravity value computed on the
 JW0017.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0017.degrees latitude (g = 980.6199 gals.).
 JW0017
 JW0017.The modeled gravity was interpolated from observed gravity values.
 JW0017
 JW0017;                    North         East    Units  Estimated Accuracy
 JW0017;SPC MD       -   226,117.      298,218.      MT  (+/- 10 meters HH2 GPS)
 JW0017
 JW0017_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD4121997980(NAD 83)
 JW0017
 JW0017                          SUPERSEDED SURVEY CONTROL
 JW0017
 JW0017  NGVD 29 (??/??/92)  131.563  (m)          431.64   (f) ADJ UNCH    1 2
 JW0017
 JW0017.Superseded values are not recommended for survey control.
 JW0017
 JW0017.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0017.See file dsdata.pdf to determine how the superseded data were derived.
 JW0017
 JW0017_MARKER: DB = BENCH MARK DISK
 JW0017_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW0017_SP_SET: PIER
 JW0017_STAMPING: A 43 1941
 JW0017_MARK LOGO: CGS
 JW0017_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0017_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0017+SATELLITE: SATELLITE OBSERVATIONS - April 14, 2014
 JW0017
 JW0017  HISTORY     - Date     Condition        Report By
 JW0017  HISTORY     - 1941     MONUMENTED       CGS
 JW0017  HISTORY     - 1960     GOOD             CGS
 JW0017  HISTORY     - 1983     GOOD             NGS
 JW0017  HISTORY     - 20070915 GOOD             GEOCAC
 JW0017  HISTORY     - 20140414 GOOD             NAGEL
 JW0017
 JW0017                          STATION DESCRIPTION
 JW0017
 JW0017'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0017'0.5 MI W FROM HANCOCK.
 JW0017'0.5 MILE WEST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0017'STATION AT HANCOCK, 49 FEET NORTH OF MILE-POST NO. 116, SET
 JW0017'IN THE NORTHEAST END OF THE CORNER OF THE 4TH. PIER BASE FROM
 JW0017'THE NORTHWEST END OF THE U.S. HIGHWAY NO. 522, 8.5 FEET SOUTHEAST
 JW0017'OF THE SOUTHEAST RAIL OF THE TRACK, 5 FEET ABOVE THE GROUND
 JW0017'LEVEL.  A STANDARD DISK STAMPED A-43 1941 AND SET VERTICALLY.
 JW0017
 JW0017                          STATION RECOVERY (1960)
 JW0017
 JW0017'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960
 JW0017'RECOVERED IN GOOD CONDITION.
 JW0017
 JW0017                          STATION RECOVERY (1983)
 JW0017
 JW0017'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0017'RECOVERED IN GOOD CONDITION, NEW DESCRIPTION FOLLOWS.  IN HANCOCK,
 JW0017'0.2 KM (0.15 MI) SOUTH ALONG A GRAVEL ROAD FROM THE JUNCTION OF STATE
 JW0017'HIGHWAY 144 AND THE U.S. HIGHWAY 522 OVERPASS BRIDGE, AT THE HIGHWAY
 JW0017'522 BRIDGE OVER THE WESTERN MARYLAND RAILROAD AND POTOMAC RIVER, SET
 JW0017'VERTICALLY IN THE NORTH FACE OF THE CONCRETE BASE OF THE 4TH SET OF
 JW0017'PIERS SOUTH OF THE NORTH ABUTMENT OF THE BRIDGE, 7.01 METERS (23.0 FT)
 JW0017'SOUTH OF THE SOUTH RAIL OF THE TRACKS, 1.52 METERS (5.0 FT) WEST OF
 JW0017'THE EAST END OF THE CONCRETE BASE OF THE BRIDGE PIERS.
 JW0017'THE MARK IS 1.21 M ABOVE GROUND.
 JW0017
 JW0017                          STATION RECOVERY (2007)
 JW0017
 JW0017'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JW0017'RECOVERED IN GOOD CONDITION, NEW DESCRIPTION FOLLOWS.  IN
 JW0017'HANCOCK, ALONG PAVED WESTERN MARYLAND RAIL TRAIL AND
 JW0017'UNDER THE U.S. HIGHWAY 522 OVERPASS BRIDGE, SET VERTICALLY
 JW0017'IN THE NORTH FACE OF THE CONCRETE BASE OF THE 4TH SET OF
 JW0017'PIERS SOUTH OF THE NORTH ABUTMENT OF THE BRIDGE, SOUTH OF
 JW0017'THE CENTERLINE OF THE RAIL TRAIL, 1.52 METERS (5.0 FT)
 JW0017'WEST OF THE EAST END OF THE CONCRETE BASE OF THE BRIDGE
 JW0017'PIERS.  THE MARK IS 1.21 M ABOVE GROUND.
 JW0017'
 JW0017
 JW0017                          STATION RECOVERY (2014)
 JW0017
 JW0017'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2014 (GEN)
 JW0017'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2570 ***********************************************************************
 DR2570  DESIGNATION -  A 43 RESET
 DR2570  PID         -  DR2570
 DR2570  STATE/COUNTY-  MD/WASHINGTON
 DR2570  COUNTRY     -  US
 DR2570  USGS QUAD   -  HANCOCK (2016)
 DR2570
 DR2570                         *CURRENT SURVEY CONTROL
 DR2570  ______________________________________________________________________
 DR2570* NAD 83(1986) POSITION- 39 41 55.1    (N) 078 10 49.1    (W)   HD_HELD2
 DR2570* NAVD 88 ORTHO HEIGHT -   131.507 (meters)      431.45  (feet) ADJUSTED
 DR2570  ______________________________________________________________________
 DR2570  GEOID HEIGHT    -        -34.025 (meters)                     GEOID18
 DR2570  DYNAMIC HEIGHT  -        131.432 (meters)      431.21  (feet) COMP
 DR2570  MODELED GRAVITY -    980,052.2   (mgal)                       NAVD 88
 DR2570
 DR2570  VERT ORDER      -  FIRST     CLASS II
 DR2570
 DR2570.The horizontal coordinates were established by autonomous hand held GPS
 DR2570.observations and have an estimated accuracy of +/- 10 meters.
 DR2570
 DR2570.The orthometric height was determined by differential leveling and
 DR2570.adjusted by the NATIONAL GEODETIC SURVEY
 DR2570.in July 2019.
 DR2570
 DR2570.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2570.GEOID18 height accuracy estimate available here.
 DR2570
 DR2570.Click photographs - Photos may exist for this station.
 DR2570
 DR2570.The dynamic height is computed by dividing the NAVD 88
 DR2570.geopotential number by the normal gravity value computed on the
 DR2570.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR2570.degrees latitude (g = 980.6199 gals.).
 DR2570
 DR2570.The modeled gravity was interpolated from observed gravity values.
 DR2570
 DR2570;                    North         East    Units  Estimated Accuracy
 DR2570;SPC MD       -   226,224.      298,765.      MT  (+/- 10 meters HH2 GPS)
 DR2570
 DR2570_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD4176198111(NAD 83)
 DR2570
 DR2570                          SUPERSEDED SURVEY CONTROL
 DR2570
 DR2570.No superseded survey control is available for this station.
 DR2570
 DR2570_MARKER: DD = SURVEY DISK
 DR2570_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DR2570_SP_SET: STEP
 DR2570_MARK LOGO: MDSHA
 DR2570_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DR2570_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DR2570_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2570+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2014
 DR2570
 DR2570  HISTORY     - Date     Condition        Report By
 DR2570  HISTORY     - 20140606 MONUMENTED       MDSHA
 DR2570
 DR2570                          STATION DESCRIPTION
 DR2570
 DR2570'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2014 (TPB)
 DR2570'THE STATION IS LOCATED ABOUT 10.2 MI (16.4 KM) WEST-NORTHWEST OF BIG
 DR2570'POOL, 8.4 MI (13.5 KM) EAST OF BELLEGROVE AND IN THE TOWN OF HANCOCK,
 DR2570'MD.
 DR2570'
 DR2570'TO REACH FROM THE POST OFFICE IN HANCOCK, MD, GO SOUTH ON PENNSYLVANIA
 DR2570'AVENUE FOR 0.32 MI (0.51 KM) TO AN INTERSECTION.  TURN LEFT AND GO
 DR2570'EAST ON MD 144 FOR 0.12 MI (0.19 KM) TO AN INTERSECTION.  TURN RIGHT
 DR2570'AND GO SOUTH ON TANEY STREET FOR 200 FT (61.0 M) TO THE WESTERN
 DR2570'MARYLAND RAIL TRAIL AND THE MARK ON THE RIGHT.
 DR2570'
 DR2570'IT IS 123.2 FT (37.6 M) WEST OF THE CENTERLINE OF TANEY STREET, 62.1
 DR2570'FT (18.9 M) EAST OF C AND P POLE NUMBER 8, 41.4 FT (12.6 M) WEST OF C
 DR2570'AND P POLE NUMBER 7, 17.0 FT (5.2 M) SOUTH OF THE CENTERLINE OF THE
 DR2570'RAIL TRAIL, 7.4 FT (2.3 M) NORTH OF THE NORTH EDGE OF A PARKING LOT
 DR2570'AND ABOUT LEVEL WITH THE GROUND.
 DR2570'
 DR2570'NOTE-THE DISK IS UNSTAMPED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0723 ***********************************************************************
 JV0723  DESIGNATION -  A 44
 JV0723  PID         -  JV0723
 JV0723  STATE/COUNTY-  MD/BALTIMORE
 JV0723  COUNTRY     -  US
 JV0723  USGS QUAD   -  RELAY (2016)
 JV0723
 JV0723                         *CURRENT SURVEY CONTROL
 JV0723  ______________________________________________________________________
 JV0723* NAD 83(1986) POSITION- 39 14 30.     (N) 076 44 56.     (W)   SCALED
 JV0723* NAVD 88 ORTHO HEIGHT -    26.215 (meters)       86.01  (feet) ADJUSTED
 JV0723  ______________________________________________________________________
 JV0723  GEOID HEIGHT    -        -32.375 (meters)                     GEOID18
 JV0723  DYNAMIC HEIGHT  -         26.201 (meters)       85.96  (feet) COMP
 JV0723  MODELED GRAVITY -    980,100.3   (mgal)                       NAVD 88
 JV0723
 JV0723  VERT ORDER      -  FIRST     CLASS II
 JV0723
 JV0723.The horizontal coordinates were scaled from a map and have
 JV0723.an estimated accuracy of +/- 6 seconds.
 JV0723
 JV0723.The orthometric height was determined by differential leveling and
 JV0723.adjusted by the NATIONAL GEODETIC SURVEY
 JV0723.in June 1991.
 JV0723
 JV0723.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0723.GEOID18 height accuracy estimate available here.
 JV0723
 JV0723.Click photographs - Photos may exist for this station.
 JV0723
 JV0723.The dynamic height is computed by dividing the NAVD 88
 JV0723.geopotential number by the normal gravity value computed on the
 JV0723.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0723.degrees latitude (g = 980.6199 gals.).
 JV0723
 JV0723.The modeled gravity was interpolated from observed gravity values.
 JV0723
 JV0723;                    North         East    Units  Estimated Accuracy
 JV0723;SPC MD       -   174,860.      421,680.      MT  (+/- 180 meters Scaled)
 JV0723
 JV0723_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ490450(NAD 83)
 JV0723
 JV0723                          SUPERSEDED SURVEY CONTROL
 JV0723
 JV0723  NGVD 29 (11/26/84)   26.438  (m)           86.74   (f) ADJUSTED    1 2
 JV0723
 JV0723.Superseded values are not recommended for survey control.
 JV0723
 JV0723.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0723.See file dsdata.pdf to determine how the superseded data were derived.
 JV0723
 JV0723_MARKER: DB = BENCH MARK DISK
 JV0723_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0723_SP_SET: RETAINING WALL
 JV0723_STAMPING: A 44 1941
 JV0723_MARK LOGO: CGS
 JV0723_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0723
 JV0723  HISTORY     - Date     Condition        Report By
 JV0723  HISTORY     - 1941     MONUMENTED       CGS
 JV0723  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV0723
 JV0723                          STATION DESCRIPTION
 JV0723
 JV0723'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0723'3.2 MI SE FROM ELLICOTT CITY.
 JV0723'IN BALTIMORE COUNTY, ABOUT 3.2 MILES SOUTHEAST ALONG THE
 JV0723'BALTIMORE AND OHIO RAILROAD FROM ELLICOTT CITY, HOWARD COUNTY,
 JV0723'AT THE ABANDONED STATION AT ORANGE GROVE, ABOUT 0.4 MILE EAST
 JV0723'OF MILEPOST 12, ABOUT 120 FEET NORTH OF THE NORTH END OF A
 JV0723'FOOT-BRIDGE OVER PATAPSCO RIVER, 14 FEET SOUTH OF THE SOUTH RAIL
 JV0723'OF THE EAST-BOUND TRACK, IN THE TOP OF A RETAINING WALL, AND 1.9
 JV0723'FEET WEST OF THE EAST END.  A STANDARD DISK, STAMPED A 44 1941.
 JV0723
 JV0723                          STATION RECOVERY (2003)
 JV0723
 JV0723'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0723'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0752 ***********************************************************************
 JV0752  DESIGNATION -  A 45
 JV0752  PID         -  JV0752
 JV0752  STATE/COUNTY-  MD/CARROLL
 JV0752  COUNTRY     -  US
 JV0752  USGS QUAD   -  SYKESVILLE (2016)
 JV0752
 JV0752                         *CURRENT SURVEY CONTROL
 JV0752  ______________________________________________________________________
 JV0752* NAD 83(1986) POSITION- 39 22 24.     (N) 076 58 01.     (W)   SCALED
 JV0752* NAVD 88 ORTHO HEIGHT -   164.673 (meters)      540.26  (feet) ADJUSTED
 JV0752  ______________________________________________________________________
 JV0752  GEOID HEIGHT    -        -31.947 (meters)                     GEOID18
 JV0752  DYNAMIC HEIGHT  -        164.588 (meters)      539.99  (feet) COMP
 JV0752  MODELED GRAVITY -    980,106.9   (mgal)                       NAVD 88
 JV0752
 JV0752  VERT ORDER      -  SECOND    CLASS 0
 JV0752
 JV0752.The horizontal coordinates were scaled from a map and have
 JV0752.an estimated accuracy of +/- 6 seconds.
 JV0752
 JV0752.The orthometric height was determined by differential leveling and
 JV0752.adjusted by the NATIONAL GEODETIC SURVEY
 JV0752.in June 1991.
 JV0752
 JV0752.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0752.GEOID18 height accuracy estimate available here.
 JV0752
 JV0752.Click photographs - Photos may exist for this station.
 JV0752
 JV0752.The dynamic height is computed by dividing the NAVD 88
 JV0752.geopotential number by the normal gravity value computed on the
 JV0752.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0752.degrees latitude (g = 980.6199 gals.).
 JV0752
 JV0752.The modeled gravity was interpolated from observed gravity values.
 JV0752
 JV0752;                    North         East    Units  Estimated Accuracy
 JV0752;SPC MD       -   189,450.      402,850.      MT  (+/- 180 meters Scaled)
 JV0752
 JV0752_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ305600(NAD 83)
 JV0752
 JV0752                          SUPERSEDED SURVEY CONTROL
 JV0752
 JV0752  NGVD 29 (11/26/84)  164.884  (m)          540.96   (f) ADJUSTED    2 0
 JV0752
 JV0752.Superseded values are not recommended for survey control.
 JV0752
 JV0752.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0752.See file dsdata.pdf to determine how the superseded data were derived.
 JV0752
 JV0752_MARKER: DB = BENCH MARK DISK
 JV0752_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0752_SP_SET: STEP
 JV0752_STAMPING: A 45 1941
 JV0752_MARK LOGO: CGS
 JV0752_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0752
 JV0752  HISTORY     - Date     Condition        Report By
 JV0752  HISTORY     - 1941     MONUMENTED       CGS
 JV0752  HISTORY     - 20020907 MARK NOT FOUND   WR
 JV0752
 JV0752                          STATION DESCRIPTION
 JV0752
 JV0752'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0752'AT SYKESVILLE.
 JV0752'AT SYKESVILLE, CARROLL COUNTY, ON STATE HIGHWAY 32, ABOUT 0.8
 JV0752'MILE NORTH OF THE BALTIMORE AND OHIO RAILROAD STATION, AT THE
 JV0752'WEST SIDE OF THE HIGH SCHOOL BUILDING, AT THE NORTHERNMOST
 JV0752'ENTRANCE, IN THE TOP STEP, 0.8 FOOT SOUTH OF THE NORTH EDGE OF THE
 JV0752'STEPS, AND 0.8 FOOT WEST OF THE NORTHERNMOST COLUMN AT THE
 JV0752'ENTRANCE.  A STANDARD DISK, STAMPED A 45 1941.
 JV0752
 JV0752                          STATION RECOVERY (2002)
 JV0752
 JV0752'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (JFU)
 JV0752'DESCRIPTION IS OUTDATED, AND INDEQUATE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2142 ***********************************************************************
 JV2142  DESIGNATION -  A 46
 JV2142  PID         -  JV2142
 JV2142  STATE/COUNTY-  MD/FREDERICK
 JV2142  COUNTRY     -  US
 JV2142  USGS QUAD   -  URBANA (2016)
 JV2142
 JV2142                         *CURRENT SURVEY CONTROL
 JV2142  ______________________________________________________________________
 JV2142* NAD 83(1986) POSITION- 39 21 59.5    (N) 077 20 00.8    (W)   HD_HELD2
 JV2142* NAVD 88 ORTHO HEIGHT -   101.245 (meters)      332.17  (feet) ADJUSTED
 JV2142  ______________________________________________________________________
 JV2142  GEOID HEIGHT    -        -32.395 (meters)                     GEOID18
 JV2142  DYNAMIC HEIGHT  -        101.191 (meters)      331.99  (feet) COMP
 JV2142  MODELED GRAVITY -    980,091.6   (mgal)                       NAVD 88
 JV2142
 JV2142  VERT ORDER      -  FIRST     CLASS II
 JV2142
 JV2142.The horizontal coordinates were established by autonomous hand held GPS
 JV2142.observations and have an estimated accuracy of +/- 10 meters.
 JV2142
 JV2142.The orthometric height was determined by differential leveling and
 JV2142.adjusted by the NATIONAL GEODETIC SURVEY
 JV2142.in June 1991.
 JV2142
 JV2142.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2142.GEOID18 height accuracy estimate available here.
 JV2142
 JV2142.Click photographs - Photos may exist for this station.
 JV2142
 JV2142.The dynamic height is computed by dividing the NAVD 88
 JV2142.geopotential number by the normal gravity value computed on the
 JV2142.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2142.degrees latitude (g = 980.6199 gals.).
 JV2142
 JV2142.The modeled gravity was interpolated from observed gravity values.
 JV2142
 JV2142;                    North         East    Units  Estimated Accuracy
 JV2142;SPC MD       -   188,749.      371,255.      MT  (+/- 10 meters HH2 GPS)
 JV2142
 JV2142_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9896960049(NAD 83)
 JV2142
 JV2142                          SUPERSEDED SURVEY CONTROL
 JV2142
 JV2142  NGVD 29 (11/26/84)  101.461  (m)          332.88   (f) ADJUSTED    1 2
 JV2142
 JV2142.Superseded values are not recommended for survey control.
 JV2142
 JV2142.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2142.See file dsdata.pdf to determine how the superseded data were derived.
 JV2142
 JV2142_MARKER: DB = BENCH MARK DISK
 JV2142_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2142_SP_SET: BRIDGE
 JV2142_STAMPING: A 46 1941
 JV2142_MARK LOGO: CGS
 JV2142_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2142_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2142+SATELLITE: SATELLITE OBSERVATIONS - April 13, 2013
 JV2142
 JV2142  HISTORY     - Date     Condition        Report By
 JV2142  HISTORY     - 1941     MONUMENTED       CGS
 JV2142  HISTORY     - 20130413 GOOD             NAGEL
 JV2142
 JV2142                          STATION DESCRIPTION
 JV2142
 JV2142'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2142'3.9 MI E FROM FREDERICK JUNCTION.
 JV2142'ABOUT 3.9 MILES EAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2142'THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, ABOUT 0.8
 JV2142'MILE SOUTHWEST OF IJAMSVILLE, 22.4 FEET WEST OF THE FORTY-SIXTH
 JV2142'POLE WEST OF MILEPOST 53, AT BRIDGE 33 A, IN THE TOP OF THE EAST
 JV2142'ABUTMENT, 2.3 FEET SOUTH OF THE NORTH END, 4.6 FEET NORTH OF THE
 JV2142'NORTH RAIL OF THE WEST-BOUND TRACK, AND ABOUT 1.1 FEET LOWER THAN
 JV2142'THE TOP OF THE RAIL.  A STANDARD DISK, STAMPED A 46 1941.
 JV2142
 JV2142                          STATION RECOVERY (2013)
 JV2142
 JV2142'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2013 (REN)
 JV2142'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0390 ***********************************************************************
 JW0390  DESIGNATION -  A 47
 JW0390  PID         -  JW0390
 JW0390  STATE/COUNTY-  MD/ALLEGANY
 JW0390  COUNTRY     -  US
 JW0390  USGS QUAD   -  PATTERSON CREEK (2016)
 JW0390
 JW0390                         *CURRENT SURVEY CONTROL
 JW0390  ______________________________________________________________________
 JW0390* NAD 83(1986) POSITION- 39 33 00.     (N) 078 41 09.     (W)   SCALED
 JW0390* NAVD 88 ORTHO HEIGHT -   180.020 (meters)      590.62  (feet) ADJUSTED
 JW0390  ______________________________________________________________________
 JW0390  GEOID HEIGHT    -        -33.011 (meters)                     GEOID18
 JW0390  DYNAMIC HEIGHT  -        179.914 (meters)      590.27  (feet) COMP
 JW0390  MODELED GRAVITY -    980,031.8   (mgal)                       NAVD 88
 JW0390
 JW0390  VERT ORDER      -  FIRST     CLASS II
 JW0390
 JW0390.The horizontal coordinates were scaled from a map and have
 JW0390.an estimated accuracy of +/- 6 seconds.
 JW0390
 JW0390.The orthometric height was determined by differential leveling and
 JW0390.adjusted by the NATIONAL GEODETIC SURVEY
 JW0390.in June 1991.
 JW0390
 JW0390.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0390.GEOID18 height accuracy estimate available here.
 JW0390
 JW0390.Click photographs - Photos may exist for this station.
 JW0390
 JW0390.The dynamic height is computed by dividing the NAVD 88
 JW0390.geopotential number by the normal gravity value computed on the
 JW0390.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0390.degrees latitude (g = 980.6199 gals.).
 JW0390
 JW0390.The modeled gravity was interpolated from observed gravity values.
 JW0390
 JW0390;                    North         East    Units  Estimated Accuracy
 JW0390;SPC MD       -   210,400.      255,110.      MT  (+/- 180 meters Scaled)
 JW0390
 JW0390_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD988803(NAD 83)
 JW0390
 JW0390                          SUPERSEDED SURVEY CONTROL
 JW0390
 JW0390  NGVD 29 (??/??/92)  180.215  (m)          591.26   (f) ADJ UNCH    1 2
 JW0390
 JW0390.Superseded values are not recommended for survey control.
 JW0390
 JW0390.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0390.See file dsdata.pdf to determine how the superseded data were derived.
 JW0390
 JW0390_MARKER: DB = BENCH MARK DISK
 JW0390_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0390_SP_SET: SIGNAL TOWER
 JW0390_STAMPING: A 47 1941
 JW0390_MARK LOGO: CGS
 JW0390_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0390
 JW0390  HISTORY     - Date     Condition        Report By
 JW0390  HISTORY     - 1941     MONUMENTED       CGS
 JW0390
 JW0390                          STATION DESCRIPTION
 JW0390
 JW0390'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0390'4.9 MI NW FROM OLDTOWN.
 JW0390'4.9 MILES NORTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0390'STATION AT OLDTOWN, 30 1/2 RAILS SOUTHEAST OF MILE-POST NO. 156,
 JW0390'SET IN THE NORTH CORNER OF SIGNAL TOWER NO. A-1559, 7.3 FEET
 JW0390'SOUTHWEST OF THE SOUTHWEST RAIL OF THE TRACK.  A STANDARD DISK
 JW0390'STAMPED A-47 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0658 ***********************************************************************
 HV0658  DESIGNATION -  A 48
 HV0658  PID         -  HV0658
 HV0658  STATE/COUNTY-  MD/ST MARYS
 HV0658  COUNTRY     -  US
 HV0658  USGS QUAD   -  ROCK POINT (2016)
 HV0658
 HV0658                         *CURRENT SURVEY CONTROL
 HV0658  ______________________________________________________________________
 HV0658* NAD 83(1986) POSITION- 38 19 10.     (N) 076 48 36.     (W)   SCALED
 HV0658* NAVD 88 ORTHO HEIGHT -    16.911 (meters)       55.48  (feet) ADJUSTED
 HV0658  ______________________________________________________________________
 HV0658  GEOID HEIGHT    -        -33.689 (meters)                     GEOID18
 HV0658  DYNAMIC HEIGHT  -         16.901 (meters)       55.45  (feet) COMP
 HV0658  MODELED GRAVITY -    980,014.6   (mgal)                       NAVD 88
 HV0658
 HV0658  VERT ORDER      -  SECOND    CLASS 0
 HV0658
 HV0658.The horizontal coordinates were scaled from a map and have
 HV0658.an estimated accuracy of +/- 6 seconds.
 HV0658
 HV0658.The orthometric height was determined by differential leveling and
 HV0658.adjusted by the NATIONAL GEODETIC SURVEY
 HV0658.in June 1991.
 HV0658
 HV0658.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0658.GEOID18 height accuracy estimate available here.
 HV0658
 HV0658.Click photographs - Photos may exist for this station.
 HV0658
 HV0658.The dynamic height is computed by dividing the NAVD 88
 HV0658.geopotential number by the normal gravity value computed on the
 HV0658.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0658.degrees latitude (g = 980.6199 gals.).
 HV0658
 HV0658.The modeled gravity was interpolated from observed gravity values.
 HV0658
 HV0658;                    North         East    Units  Estimated Accuracy
 HV0658;SPC MD       -    72,480.      416,620.      MT  (+/- 180 meters Scaled)
 HV0658
 HV0658_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH417428(NAD 83)
 HV0658
 HV0658                          SUPERSEDED SURVEY CONTROL
 HV0658
 HV0658  NGVD 29 (11/26/84)   17.190  (m)           56.40   (f) ADJUSTED    2 0
 HV0658
 HV0658.Superseded values are not recommended for survey control.
 HV0658
 HV0658.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0658.See file dsdata.pdf to determine how the superseded data were derived.
 HV0658
 HV0658_MARKER: DB = BENCH MARK DISK
 HV0658_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0658_SP_SET: BRIDGE
 HV0658_STAMPING: A 48 1942
 HV0658_MARK LOGO: CGS
 HV0658_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0658
 HV0658  HISTORY     - Date     Condition        Report By
 HV0658  HISTORY     - 1942     MONUMENTED       CGS
 HV0658
 HV0658                          STATION DESCRIPTION
 HV0658
 HV0658'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0658'4.2 MI S FROM CHAPTICO.
 HV0658'THIS MARK IS ALONG HIGHWAY NUMBER 238, ABOUT 4.2 MILES SOUTH OF THE
 HV0658'INTERSECTION AT CHAPTICO, SAINT MARYS COUNTY, AT A CONCRETE BRIDGE
 HV0658'ACROSS THE HIGHWAY FROM A LARGE WHITE TWO STORY HOUSE, SET IN
 HV0658'THE TOP OF THE NORTHEAST WINGWALL OF THE BRIDGE, AND IS A STANDARD
 HV0658'DISK SET IN THE WINGWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0705 ***********************************************************************
 HV0705  DESIGNATION -  A 49
 HV0705  PID         -  HV0705
 HV0705  STATE/COUNTY-  MD/CHARLES
 HV0705  COUNTRY     -  US
 HV0705  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0705
 HV0705                         *CURRENT SURVEY CONTROL
 HV0705  ______________________________________________________________________
 HV0705* NAD 83(1986) POSITION- 38 25 11.     (N) 076 51 35.     (W)   SCALED
 HV0705* NAVD 88 ORTHO HEIGHT -    41.855 (meters)      137.32  (feet) ADJUSTED
 HV0705  ______________________________________________________________________
 HV0705  GEOID HEIGHT    -        -33.545 (meters)                     GEOID18
 HV0705  DYNAMIC HEIGHT  -         41.829 (meters)      137.23  (feet) COMP
 HV0705  MODELED GRAVITY -    980,006.9   (mgal)                       NAVD 88
 HV0705
 HV0705  VERT ORDER      -  FIRST     CLASS II
 HV0705
 HV0705.The horizontal coordinates were scaled from a map and have
 HV0705.an estimated accuracy of +/- 6 seconds.
 HV0705
 HV0705.The orthometric height was determined by differential leveling and
 HV0705.adjusted by the NATIONAL GEODETIC SURVEY
 HV0705.in June 1991.
 HV0705
 HV0705.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0705.GEOID18 height accuracy estimate available here.
 HV0705
 HV0705.Click photographs - Photos may exist for this station.
 HV0705
 HV0705.The dynamic height is computed by dividing the NAVD 88
 HV0705.geopotential number by the normal gravity value computed on the
 HV0705.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0705.degrees latitude (g = 980.6199 gals.).
 HV0705
 HV0705.The modeled gravity was interpolated from observed gravity values.
 HV0705
 HV0705;                    North         East    Units  Estimated Accuracy
 HV0705;SPC MD       -    83,600.      412,250.      MT  (+/- 180 meters Scaled)
 HV0705
 HV0705_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH376540(NAD 83)
 HV0705
 HV0705                          SUPERSEDED SURVEY CONTROL
 HV0705
 HV0705  NGVD 29 (11/26/84)   42.092  (m)          138.10   (f) ADJUSTED    1 2
 HV0705
 HV0705.Superseded values are not recommended for survey control.
 HV0705
 HV0705.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0705.See file dsdata.pdf to determine how the superseded data were derived.
 HV0705
 HV0705_MARKER: DB = BENCH MARK DISK
 HV0705_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0705_SP_SET: CULVERT
 HV0705_STAMPING: A 49 1942
 HV0705_MARK LOGO: CGS
 HV0705_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0705
 HV0705  HISTORY     - Date     Condition        Report By
 HV0705  HISTORY     - 1942     MONUMENTED       CGS
 HV0705  HISTORY     - 1971     GOOD             NGS
 HV0705
 HV0705                          STATION DESCRIPTION
 HV0705
 HV0705'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0705'8.2 MI NE FROM NEWBURG.
 HV0705'ABOUT 0.2 MILE NORTHWEST ALONG STATE HIGHWAY 257 FROM THE POST
 HV0705'OFFICE AT NEWBURG, THENCE 2.2 MILES NORTH ALONG U.S. HIGHWAY 301,
 HV0705'THENCE 5.2 MILES EAST ALONG STATE HIGHWAY 234, THENCE 0.6 MILE
 HV0705'NORTH ALONG STATE HIGHWAY 232, SET ON THE TOP OF THE SOUTH END OF
 HV0705'THE EAST CONCRETE HEAD WALL FOR A SMALL PIPE CULVERT, 15 FEET
 HV0705'EAST OF THE CENTER LINE OF THE HIGHWAY AND LEVEL WITH THE HIGHWAY.
 HV0705'CULVERT IS OLD AND SHOWS SIGN OF ITS AGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1809 ***********************************************************************
 HV1809  DESIGNATION -  A 5
 HV1809  PID         -  HV1809
 HV1809  STATE/COUNTY-  MD/MONTGOMERY
 HV1809  COUNTRY     -  US
 HV1809  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1809
 HV1809                         *CURRENT SURVEY CONTROL
 HV1809  ______________________________________________________________________
 HV1809* NAD 83(1986) POSITION- 38 58 01.     (N) 077 06 10.     (W)   SCALED
 HV1809* NAVD 88 ORTHO HEIGHT -    76.188 (meters)      249.96  (feet) ADJUSTED
 HV1809  ______________________________________________________________________
 HV1809  GEOID HEIGHT    -        -31.886 (meters)                     GEOID18
 HV1809  DYNAMIC HEIGHT  -         76.147 (meters)      249.83  (feet) COMP
 HV1809  MODELED GRAVITY -    980,088.2   (mgal)                       NAVD 88
 HV1809
 HV1809  VERT ORDER      -  FIRST     CLASS II
 HV1809
 HV1809.The horizontal coordinates were scaled from a map and have
 HV1809.an estimated accuracy of +/- 6 seconds.
 HV1809
 HV1809.The orthometric height was determined by differential leveling and
 HV1809.adjusted by the NATIONAL GEODETIC SURVEY
 HV1809.in June 1991.
 HV1809
 HV1809.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1809.GEOID18 height accuracy estimate available here.
 HV1809
 HV1809.Click photographs - Photos may exist for this station.
 HV1809
 HV1809.The dynamic height is computed by dividing the NAVD 88
 HV1809.geopotential number by the normal gravity value computed on the
 HV1809.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1809.degrees latitude (g = 980.6199 gals.).
 HV1809
 HV1809.The modeled gravity was interpolated from observed gravity values.
 HV1809
 HV1809;                    North         East    Units  Estimated Accuracy
 HV1809;SPC MD       -   144,340.      391,090.      MT  (+/- 180 meters Scaled)
 HV1809
 HV1809_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ178152(NAD 83)
 HV1809
 HV1809                          SUPERSEDED SURVEY CONTROL
 HV1809
 HV1809  NGVD 29 (11/26/84)   76.400  (m)          250.66   (f) ADJUSTED    1 2
 HV1809
 HV1809.Superseded values are not recommended for survey control.
 HV1809
 HV1809.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1809.See file dsdata.pdf to determine how the superseded data were derived.
 HV1809
 HV1809_MARKER: DB = BENCH MARK DISK
 HV1809_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1809_SP_SET: BRIDGE
 HV1809_STAMPING: A 5 1933
 HV1809_MARK LOGO: CGS
 HV1809_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1809
 HV1809  HISTORY     - Date     Condition        Report By
 HV1809  HISTORY     - 1933     MONUMENTED       CGS
 HV1809  HISTORY     - 1953     GOOD             USGS
 HV1809  HISTORY     - 20020310 GOOD             INDIV
 HV1809
 HV1809                          STATION DESCRIPTION
 HV1809
 HV1809'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1809'AT SOMERSET.
 HV1809'AT SOMERSET, MONTGOMERY COUNTY, ON THE GEORGETOWN BRANCH OF THE
 HV1809'BALTIMORE AND OHIO RAILROAD, 800 FEET NORTH OF THE RIVER ROAD
 HV1809'CROSSING, 225 FEET WEST OF THE NORTHWEST CORNER OF THE G.A.
 HV1809'FULLER MARBLE WORKS IN 1933, 120 FEET NORTHEAST OF A SMALL
 HV1809'STORAGE SHED, AT THE SOUTH END OF CONCRETE BRIDGE NO. 8, IN THE
 HV1809'TOP OF THE EAST WING WALL, 10 FEET EAST OF THE CENTERLINE OF
 HV1809'THE TRACK, AND ABOUT 1-1/2 FEET BELOW THE TOP OF THE RAIL.  A
 HV1809'STANDARD DISK, STAMPED A 5 1933.
 HV1809
 HV1809                          STATION RECOVERY (1953)
 HV1809
 HV1809'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV1809'RECOVERED IN GOOD CONDITION.
 HV1809
 HV1809                          STATION RECOVERY (2002)
 HV1809
 HV1809'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (JJS)
 HV1809'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0447 ***********************************************************************
 HV0447  DESIGNATION -  A 52
 HV0447  PID         -  HV0447
 HV0447  STATE/COUNTY-  MD/DORCHESTER
 HV0447  COUNTRY     -  US
 HV0447  USGS QUAD   -  GOLDEN HILL (2016)
 HV0447
 HV0447                         *CURRENT SURVEY CONTROL
 HV0447  ______________________________________________________________________
 HV0447* NAD 83(2011) POSITION- 38 23 54.48033(N) 076 13 43.55025(W)   ADJUSTED
 HV0447* NAD 83(2011) ELLIP HT-   -34.665 (meters)        (06/27/12)   ADJUSTED
 HV0447* NAD 83(2011) EPOCH   -  2010.00
 HV0447* NAVD 88 ORTHO HEIGHT -     0.292 (meters)        0.96  (feet) ADJUSTED
 HV0447  ______________________________________________________________________
 HV0447  GEOID HEIGHT    -        -34.960 (meters)                     GEOID18
 HV0447  NAD 83(2011) X  -  1,191,431.722 (meters)                     COMP
 HV0447  NAD 83(2011) Y  - -4,861,174.880 (meters)                     COMP
 HV0447  NAD 83(2011) Z  -  3,940,181.112 (meters)                     COMP
 HV0447  LAPLACE CORR    -         -6.57  (seconds)                    DEFLEC18
 HV0447  DYNAMIC HEIGHT  -          0.292 (meters)        0.96  (feet) COMP
 HV0447  MODELED GRAVITY -    980,010.9   (mgal)                       NAVD 88
 HV0447
 HV0447  VERT ORDER      -  FIRST     CLASS II
 HV0447
 HV0447  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0447  Standards:
 HV0447         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0447            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0447  -------------------------------------------------------------------
 HV0447  NETWORK    0.92   2.06           0.39   0.36   1.05     -0.05770212
 HV0447  -------------------------------------------------------------------
 HV0447  Click here for local accuracies and other accuracy information.
 HV0447
 HV0447.The horizontal coordinates were established by GPS observations
 HV0447.and adjusted by the National Geodetic Survey in June 2012.
 HV0447
 HV0447.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0447.been affixed to the stable North American tectonic plate. See 
 HV0447.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0447
 HV0447.The horizontal coordinates are valid at the epoch date displayed above
 HV0447.which is a decimal equivalence of Year/Month/Day.
 HV0447
 HV0447.The orthometric height was determined by differential leveling and
 HV0447.adjusted by the NATIONAL GEODETIC SURVEY
 HV0447.in June 1991.
 HV0447
 HV0447.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0447.GEOID18 height accuracy estimate available here.
 HV0447
 HV0447.Click photographs - Photos may exist for this station.
 HV0447
 HV0447.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0447
 HV0447.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0447
 HV0447.The ellipsoidal height was determined by GPS observations
 HV0447.and is referenced to NAD 83.
 HV0447
 HV0447.The dynamic height is computed by dividing the NAVD 88
 HV0447.geopotential number by the normal gravity value computed on the
 HV0447.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0447.degrees latitude (g = 980.6199 gals.).
 HV0447
 HV0447.The modeled gravity was interpolated from observed gravity values.
 HV0447
 HV0447. The following values were computed from the NAD 83(2011) position.
 HV0447
 HV0447;                    North         East     Units Scale Factor Converg.
 HV0447;SPC MD       -    81,517.463   467,369.533   MT  0.99998433   +0 29 02.6
 HV0447;SPC MD       -   267,445.21  1,533,361.54   sFT  0.99998433   +0 29 02.6
 HV0447;UTM  18      - 4,250,741.939   392,702.256   MT  0.99974178   -0 45 47.8
 HV0447
 HV0447!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0447!SPC MD       -   1.00000544  x   0.99998433  =   0.99998977
 HV0447!UTM  18      -   1.00000544  x   0.99974178  =   0.99974722
 HV0447
 HV0447_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9270250741(NAD 83)
 HV0447
 HV0447                          SUPERSEDED SURVEY CONTROL
 HV0447
 HV0447  NAD 83(2007)-  38 23 54.48055(N)    076 13 43.55111(W) AD(2002.00) B
 HV0447  ELLIP H (02/12/09)  -34.642  (m)                       GP(2002.00) 5 1
 HV0447  NAD 83(1991)-  38 23 54.48069(N)    076 13 43.55080(W) AD(       ) B
 HV0447  ELLIP H (02/28/06)  -34.638  (m)                       GP(       ) 5 1
 HV0447  NAVD 88               0.29   (m)            1.0    (f) LEVELING    3  
 HV0447  NGVD 29 (11/26/84)    0.529  (m)            1.74   (f) ADJUSTED    1 2
 HV0447
 HV0447.Superseded values are not recommended for survey control.
 HV0447
 HV0447.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0447.See file dsdata.pdf to determine how the superseded data were derived.
 HV0447
 HV0447_MARKER: DB = BENCH MARK DISK
 HV0447_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0447_STAMPING: A 52 1942
 HV0447_MARK LOGO: CGS
 HV0447_PROJECTION: RECESSED 15 CENTIMETERS
 HV0447_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV0447_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0447+STABILITY: SURFACE MOTION
 HV0447_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0447+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2014
 HV0447
 HV0447  HISTORY     - Date     Condition        Report By
 HV0447  HISTORY     - 1942     MONUMENTED       CGS
 HV0447  HISTORY     - 1971     GOOD             NGS
 HV0447  HISTORY     - 20050920 GOOD             NGS
 HV0447  HISTORY     - 20060225 GOOD             USPSQD
 HV0447  HISTORY     - 20070224 POOR             USPSQD
 HV0447  HISTORY     - 20140328 GOOD             ARCSHE
 HV0447
 HV0447                          STATION DESCRIPTION
 HV0447
 HV0447'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0447'0.1 MI N FROM GOLDEN HILL.
 HV0447'ABOUT 0.1 MILE NORTH ALONG SMITHVILLE ROAD FROM THE SOUTH
 HV0447'JUNCTION OF STATE HIGHWAY 335 AT GOLDEN HILL, 34 1/2 FEET EAST
 HV0447'OF THE CENTER LINE OF THE ROAD, 118 1/2 FEET NORTH OF THE CENTER
 HV0447'LINE OF A PAVED ROAD THAT LEADS SOUTHEAST TO STATE HIGHWAY 335,
 HV0447'92 FEET NORTHEAST AND ACROSS SMITHVILLE ROAD FROM TELEPHONE
 HV0447'POLE NUMBER 752, 76 1/2 FEET SOUTH-SOUTHEAST OF A POWER POLE,
 HV0447'0.9 FOOT SOUTH OF A METAL WITNESS POST, ABOUT LEVEL WITH THE
 HV0447'ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
 HV0447
 HV0447                          STATION RECOVERY (2005)
 HV0447
 HV0447'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (GS)
 HV0447'RECOVERED 1 FT WEST OF A FIBERGLASS WITNESS POST.
 HV0447
 HV0447                          STATION RECOVERY (2006)
 HV0447
 HV0447'RECOVERY NOTE BY US POWER SQUADRON 2006 (NLH)
 HV0447'METAL WITNESS POST IS DOWN. THERE IS A CARSONITE POST. MARK IS 6
 HV0447'INCHES UNDER WATER, BUT READABLE. N 38 23 54  W 076 13 44
 HV0447
 HV0447                          STATION RECOVERY (2007)
 HV0447
 HV0447'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HV0447'CONCRETE BASE WAS FOUND UPROOTED AT THIS LOCATION.
 HV0447
 HV0447                          STATION RECOVERY (2014)
 HV0447
 HV0447'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0447'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0061 ***********************************************************************
 HV0061  DESIGNATION -  A 53
 HV0061  PID         -  HV0061
 HV0061  STATE/COUNTY-  MD/TALBOT
 HV0061  COUNTRY     -  US
 HV0061  USGS QUAD   -  EASTON (2016)
 HV0061
 HV0061                         *CURRENT SURVEY CONTROL
 HV0061  ______________________________________________________________________
 HV0061* NAD 83(1986) POSITION- 38 46 45.     (N) 076 05 25.     (W)   SCALED
 HV0061* NAVD 88 ORTHO HEIGHT -     4.794 (meters)       15.73  (feet) ADJUSTED
 HV0061  ______________________________________________________________________
 HV0061  GEOID HEIGHT    -        -34.633 (meters)                     GEOID18
 HV0061  DYNAMIC HEIGHT  -          4.791 (meters)       15.72  (feet) COMP
 HV0061  MODELED GRAVITY -    980,037.4   (mgal)                       NAVD 88
 HV0061
 HV0061  VERT ORDER      -  SECOND    CLASS 0
 HV0061
 HV0061.The horizontal coordinates were scaled from a map and have
 HV0061.an estimated accuracy of +/- 6 seconds.
 HV0061
 HV0061.The orthometric height was determined by differential leveling and
 HV0061.adjusted by the NATIONAL GEODETIC SURVEY
 HV0061.in June 1991.
 HV0061
 HV0061.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0061.GEOID18 height accuracy estimate available here.
 HV0061
 HV0061.Click photographs - Photos may exist for this station.
 HV0061
 HV0061.The dynamic height is computed by dividing the NAVD 88
 HV0061.geopotential number by the normal gravity value computed on the
 HV0061.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0061.degrees latitude (g = 980.6199 gals.).
 HV0061
 HV0061.The modeled gravity was interpolated from observed gravity values.
 HV0061
 HV0061;                    North         East    Units  Estimated Accuracy
 HV0061;SPC MD       -   123,890.      479,050.      MT  (+/- 180 meters Scaled)
 HV0061
 HV0061_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH052928(NAD 83)
 HV0061
 HV0061                          SUPERSEDED SURVEY CONTROL
 HV0061
 HV0061  NGVD 29 (11/26/84)    5.031  (m)           16.51   (f) ADJUSTED    2 0
 HV0061
 HV0061.Superseded values are not recommended for survey control.
 HV0061
 HV0061.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0061.See file dsdata.pdf to determine how the superseded data were derived.
 HV0061
 HV0061_MARKER: DB = BENCH MARK DISK
 HV0061_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0061_STAMPING: A 53 1942
 HV0061_MARK LOGO: CGS
 HV0061_PROJECTION: PROJECTING 5 CENTIMETERS
 HV0061_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0061+STABILITY: SURFACE MOTION
 HV0061
 HV0061  HISTORY     - Date     Condition        Report By
 HV0061  HISTORY     - 1942     MONUMENTED       CGS
 HV0061  HISTORY     - 19970106 GOOD             USPSQD
 HV0061  HISTORY     - 20020312 MARK NOT FOUND   USPSQD
 HV0061  HISTORY     - 20050715 MARK NOT FOUND   EASTUT
 HV0061
 HV0061                          STATION DESCRIPTION
 HV0061
 HV0061'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0061'0.8 MI W FROM EASTON.
 HV0061'ALONG STATE HIGHWAY 33 ABOUT 0.85 MILE WEST OF THE COURTHOUSE
 HV0061'AT EASTON, AT A DRIVEWAY BORDERED BY LARGE MAPLE TREES AND LEADING
 HV0061'NORTH TO A 2-STORY FARMHOUSE, 14 FEET WEST OF THE CENTER LINE OF
 HV0061'THE DRIVEWAY, 30 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY,
 HV0061'13.5 FEET NORTHEAST OF CABLE POLE NUMBER 27, 12 FEET NORTH OF
 HV0061'THE WEST END OF AN L TYPE CONCRETE CULVERT HEADWALL, 2 FEET
 HV0061'SOUTH OF THE WHITE BOARD FENCE AROUND THE YARD, ABOUT 2 FEET
 HV0061'HIGHER THAN THE ROAD, A BENCH MARK DISK SET IN THE TOP OF A
 HV0061'CONCRETE POST PROJECTING ABOUT 2 INCHES.
 HV0061
 HV0061                          STATION RECOVERY (1997)
 HV0061
 HV0061'RECOVERY NOTE BY US POWER SQUADRON 1997
 HV0061'RECOVERED IN GOOD CONDITION.
 HV0061
 HV0061                          STATION RECOVERY (2002)
 HV0061
 HV0061'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0061'SEE HV0062 FOR RESET.
 HV0061
 HV0061                          STATION RECOVERY (2005)
 HV0061
 HV0061'RECOVERY NOTE BY EASTON UTILITIES 2005 (BKS)
 HV0061'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3358 ***********************************************************************
 JV3358  DESIGNATION -  A 54
 JV3358  PID         -  JV3358
 JV3358  STATE/COUNTY-  MD/WASHINGTON
 JV3358  COUNTRY     -  US
 JV3358  USGS QUAD   -  HAGERSTOWN (2016)
 JV3358
 JV3358                         *CURRENT SURVEY CONTROL
 JV3358  ______________________________________________________________________
 JV3358* NAD 83(1986) POSITION- 39 39 03.     (N) 077 42 41.     (W)   SCALED
 JV3358* NAVD 88 ORTHO HEIGHT -   171.637 (meters)      563.11  (feet) ADJUSTED
 JV3358  ______________________________________________________________________
 JV3358  GEOID HEIGHT    -        -34.148 (meters)                     GEOID18
 JV3358  DYNAMIC HEIGHT  -        171.536 (meters)      562.78  (feet) COMP
 JV3358  MODELED GRAVITY -    980,034.5   (mgal)                       NAVD 88
 JV3358
 JV3358  VERT ORDER      -  SECOND    CLASS 0
 JV3358
 JV3358.The horizontal coordinates were scaled from a map and have
 JV3358.an estimated accuracy of +/- 6 seconds.
 JV3358
 JV3358.The orthometric height was determined by differential leveling and
 JV3358.adjusted by the NATIONAL GEODETIC SURVEY
 JV3358.in June 1991.
 JV3358
 JV3358.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3358.GEOID18 height accuracy estimate available here.
 JV3358
 JV3358.Click photographs - Photos may exist for this station.
 JV3358
 JV3358.The dynamic height is computed by dividing the NAVD 88
 JV3358.geopotential number by the normal gravity value computed on the
 JV3358.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3358.degrees latitude (g = 980.6199 gals.).
 JV3358
 JV3358.The modeled gravity was interpolated from observed gravity values.
 JV3358
 JV3358;                    North         East    Units  Estimated Accuracy
 JV3358;SPC MD       -   220,500.      338,940.      MT  (+/- 180 meters Scaled)
 JV3358
 JV3358_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ673925(NAD 83)
 JV3358
 JV3358                          SUPERSEDED SURVEY CONTROL
 JV3358
 JV3358  NGVD 29 (11/26/84)  171.823  (m)          563.72   (f) ADJUSTED    2 0
 JV3358
 JV3358.Superseded values are not recommended for survey control.
 JV3358
 JV3358.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3358.See file dsdata.pdf to determine how the superseded data were derived.
 JV3358
 JV3358_MARKER: DB = BENCH MARK DISK
 JV3358_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV3358+WITH SETTING: PAVEMENT
 JV3358_SP_SET: POLE BASE
 JV3358_STAMPING: A 54 1942
 JV3358_MARK LOGO: CGS
 JV3358_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3358+STABILITY: SURFACE MOTION
 JV3358
 JV3358  HISTORY     - Date     Condition        Report By
 JV3358  HISTORY     - 1942     MONUMENTED       CGS
 JV3358  HISTORY     - 1979     MARK NOT FOUND   NGS
 JV3358  HISTORY     - 20080402 MARK NOT FOUND   GEOCAC
 JV3358
 JV3358                          STATION DESCRIPTION
 JV3358
 JV3358'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3358'1.1 MI NE FROM HAGERSTOWN.
 JV3358'1.1 MILES NORTHEAST ALONG STATE HIGHWAY 60 FROM THE COURTHOUSE AT
 JV3358'HAGERSTOWN, WASHINGTON COUNTY, IN THE SOUTHWEST QUARTER OF THE
 JV3358'INTERSECTION OF THE HIGHWAY AND THE WESTERN MARYLAND RAILWAY, 39
 JV3358'FEET NORTH OF THE NORTHEAST CORNER OF AN ATLANTIC SERVICE
 JV3358'STATION, 31 FEET SOUTHWEST OF THE SOUTHWEST RAIL OF THE SOUTHWEST
 JV3358'RAILROAD TRACK, 30 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY,
 JV3358'8.6 FEET SOUTHWEST OF A SIGNAL LIGHT, AND IN THE TOP OF THE
 JV3358'CONCRETE BASE OF A FLOODLIGHT POLE.  A STANDARD DISK, STAMPED
 JV3358'A 54 1942.
 JV3358
 JV3358                          STATION RECOVERY (1979)
 JV3358
 JV3358'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3358'NOTE--ATLANTIC STATION IS NOW A COIN OPERATED LAUNDRY AND
 JV3358'FLOODLIGHT POLE AND BASE HAVE BEEN REMOVED.
 JV3358
 JV3358                          STATION RECOVERY (2008)
 JV3358
 JV3358'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3358'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0071 ***********************************************************************
 JW0071  DESIGNATION -  A 55
 JW0071  PID         -  JW0071
 JW0071  STATE/COUNTY-  MD/WASHINGTON
 JW0071  COUNTRY     -  US
 JW0071  USGS QUAD   -  CHERRY RUN (2016)
 JW0071
 JW0071                         *CURRENT SURVEY CONTROL
 JW0071  ______________________________________________________________________
 JW0071* NAD 83(1986) POSITION- 39 42 02.89   (N) 078 04 51.22   (W)   HD_HELD1
 JW0071* NAVD 88 ORTHO HEIGHT -   152.049 (meters)      498.85  (feet) ADJUSTED
 JW0071  ______________________________________________________________________
 JW0071  GEOID HEIGHT    -        -34.156 (meters)                     GEOID18
 JW0071  DYNAMIC HEIGHT  -        151.960 (meters)      498.56  (feet) COMP
 JW0071  MODELED GRAVITY -    980,041.9   (mgal)                       NAVD 88
 JW0071
 JW0071  VERT ORDER      -  SECOND    CLASS 0
 JW0071
 JW0071.The horizontal coordinates were determined by differentially corrected
 JW0071.hand held GPS observations or other comparable positioning techniques
 JW0071.and have an estimated accuracy of +/- 3 meters.
 JW0071
 JW0071.The orthometric height was determined by differential leveling and
 JW0071.adjusted by the NATIONAL GEODETIC SURVEY
 JW0071.in June 1991.
 JW0071
 JW0071.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0071.GEOID18 height accuracy estimate available here.
 JW0071
 JW0071.Click photographs - Photos may exist for this station.
 JW0071
 JW0071.The dynamic height is computed by dividing the NAVD 88
 JW0071.geopotential number by the normal gravity value computed on the
 JW0071.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0071.degrees latitude (g = 980.6199 gals.).
 JW0071
 JW0071.The modeled gravity was interpolated from observed gravity values.
 JW0071
 JW0071;                    North         East    Units  Estimated Accuracy
 JW0071;SPC MD       -   226,359.0     307,293.9     MT  (+/- 3 meters HH1 GPS) 
 JW0071
 JW0071_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD5027898624(NAD 83)
 JW0071
 JW0071                          SUPERSEDED SURVEY CONTROL
 JW0071
 JW0071  NGVD 29 (??/??/92)  152.251  (m)          499.51   (f) ADJ UNCH    2 0
 JW0071
 JW0071.Superseded values are not recommended for survey control.
 JW0071
 JW0071.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0071.See file dsdata.pdf to determine how the superseded data were derived.
 JW0071
 JW0071_MARKER: DB = BENCH MARK DISK
 JW0071_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0071_SP_SET: BRIDGE
 JW0071_STAMPING: A 55 1942
 JW0071_MARK LOGO: CGS
 JW0071_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0071_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW0071+SATELLITE: SATELLITE OBSERVATIONS - April 06, 2007
 JW0071
 JW0071  HISTORY     - Date     Condition        Report By
 JW0071  HISTORY     - 1942     MONUMENTED       CGS
 JW0071  HISTORY     - 20070406 GOOD             GEOCAC
 JW0071  HISTORY     - 20101020 GOOD             JCLS
 JW0071
 JW0071                          STATION DESCRIPTION
 JW0071
 JW0071'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JW0071'6.3 MI NE FROM HANCOCK.
 JW0071'4.3 MILES SOUTHEAST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0071'STATION AT HANCOCK, THENCE 2.0 MILES NORTHEAST ALONG COUNTY ROAD,
 JW0071'SET IN THE SOUTH CORNER OF THE EAST ABUTMENT OF A LARGE CONCRETE
 JW0071'AND STONE BRIDGE IN A SMALL VALLEY, ABOUT 0.7 MILE SOUTHWEST OF
 JW0071'A CROSS ROADS, 18 FEET SOUTH OF THE CENTER-LINE OF THE ROAD.  A
 JW0071'STANDARD DISK, STAMPED A 55 1942
 JW0071
 JW0071                          STATION RECOVERY (2007)
 JW0071
 JW0071'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JW0071'NOTE - CHANGE 'COUNTY ROAD' TO 'HOLLOW ROAD'.
 JW0071
 JW0071                          STATION RECOVERY (2010)
 JW0071
 JW0071'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2010
 JW0071'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0386 ***********************************************************************
 HU0386  DESIGNATION -  A 56 RESET
 HU0386  PID         -  HU0386
 HU0386  STATE/COUNTY-  MD/WORCESTER
 HU0386  COUNTRY     -  US
 HU0386  USGS QUAD   -  BERLIN (2016)
 HU0386
 HU0386                         *CURRENT SURVEY CONTROL
 HU0386  ______________________________________________________________________
 HU0386* NAD 83(1986) POSITION- 38 19 15.     (N) 075 12 09.     (W)   SCALED
 HU0386* NAVD 88 ORTHO HEIGHT -     7.04  (meters)       23.1   (feet) RESET
 HU0386  ______________________________________________________________________
 HU0386  GEOID HEIGHT    -        -36.041 (meters)                     GEOID18
 HU0386  VERT ORDER      -  THIRD
 HU0386
 HU0386.The horizontal coordinates were scaled from a map and have
 HU0386.an estimated accuracy of +/- 6 seconds.
 HU0386
 HU0386.The orthometric height was computed from unverified reset data.
 HU0386
 HU0386.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0386.GEOID18 height accuracy estimate available here.
 HU0386
 HU0386.Click photographs - Photos may exist for this station.
 HU0386
 HU0386;                    North         East    Units  Estimated Accuracy
 HU0386;SPC MD       -    74,160.      557,180.      MT  (+/- 180 meters Scaled)
 HU0386
 HU0386_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH822414(NAD 83)
 HU0386
 HU0386                          SUPERSEDED SURVEY CONTROL
 HU0386
 HU0386  NGVD 29 (??/??/??)    7.29   (m)           23.9    (f) RESET       3  
 HU0386
 HU0386.Superseded values are not recommended for survey control.
 HU0386
 HU0386.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0386.See file dsdata.pdf to determine how the superseded data were derived.
 HU0386
 HU0386_MARKER: DD = SURVEY DISK
 HU0386_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0386_STAMPING: A 56 RESET 1963
 HU0386_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0386_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0386+STABILITY: SURFACE MOTION
 HU0386
 HU0386  HISTORY     - Date     Condition        Report By
 HU0386  HISTORY     - 1963     MONUMENTED       MDDT
 HU0386  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU0386
 HU0386                          STATION DESCRIPTION
 HU0386
 HU0386'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 HU0386'1 MI ESE FROM BERLIN.
 HU0386'APPROXIMATELY 1 MILE ESE OF BERLIN, 0.35 MILE E ALONG MD. RTE.
 HU0386'376 FROM THE JUNCTION OF U.S. RTE. 113, AT A DIRT ROAD LEADING
 HU0386'NORTH.  THE MARK IS 102 FEET N OF THE CENTERLINE OF MD. RTE. 376,
 HU0386'10.4 FEET E OF THE CENTERLINE OF THE DIRT ROAD, 135.8 FEET W OF
 HU0386'THE SW CORNER OF A CHICKEN HOUSE AND 2 FEET S OF AN UNNUMBERED
 HU0386'POWER POLE, AND SET IN A CONCRETE POST PROJECTING 3 INCHES.
 HU0386
 HU0386                          STATION RECOVERY (2003)
 HU0386
 HU0386'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0386'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0579 ***********************************************************************
 HU0579  DESIGNATION -  A 57
 HU0579  PID         -  HU0579
 HU0579  STATE/COUNTY-  MD/SOMERSET
 HU0579  COUNTRY     -  US
 HU0579  USGS QUAD   -  DEAL ISLAND (2016)
 HU0579
 HU0579                         *CURRENT SURVEY CONTROL
 HU0579  ______________________________________________________________________
 HU0579* NAD 83(1986) POSITION- 38 11 05.     (N) 075 54 56.     (W)   SCALED
 HU0579* NAVD 88 ORTHO HEIGHT -     0.251 (meters)        0.82  (feet) ADJUSTED
 HU0579  ______________________________________________________________________
 HU0579  GEOID HEIGHT    -        -35.805 (meters)                     GEOID18
 HU0579  DYNAMIC HEIGHT  -          0.251 (meters)        0.82  (feet) COMP
 HU0579  MODELED GRAVITY -    979,986.1   (mgal)                       NAVD 88
 HU0579
 HU0579  VERT ORDER      -  FIRST     CLASS II
 HU0579
 HU0579.The horizontal coordinates were scaled from a map and have
 HU0579.an estimated accuracy of +/- 6 seconds.
 HU0579
 HU0579.The orthometric height was determined by differential leveling and
 HU0579.adjusted by the NATIONAL GEODETIC SURVEY
 HU0579.in June 1991.
 HU0579
 HU0579.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0579.GEOID18 height accuracy estimate available here.
 HU0579
 HU0579.Click photographs - Photos may exist for this station.
 HU0579
 HU0579.The dynamic height is computed by dividing the NAVD 88
 HU0579.geopotential number by the normal gravity value computed on the
 HU0579.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0579.degrees latitude (g = 980.6199 gals.).
 HU0579
 HU0579.The modeled gravity was interpolated from observed gravity values.
 HU0579
 HU0579;                    North         East    Units  Estimated Accuracy
 HU0579;SPC MD       -    58,070.      495,010.      MT  (+/- 180 meters Scaled)
 HU0579
 HU0579_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH198267(NAD 83)
 HU0579
 HU0579                          SUPERSEDED SURVEY CONTROL
 HU0579
 HU0579  NGVD 29 (11/26/84)    0.499  (m)            1.64   (f) ADJUSTED    1 2
 HU0579
 HU0579.Superseded values are not recommended for survey control.
 HU0579
 HU0579.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0579.See file dsdata.pdf to determine how the superseded data were derived.
 HU0579
 HU0579_MARKER: DB = BENCH MARK DISK
 HU0579_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0579_STAMPING: A 57 1942
 HU0579_MARK LOGO: CGS
 HU0579_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0579+STABILITY: SURFACE MOTION
 HU0579
 HU0579  HISTORY     - Date     Condition        Report By
 HU0579  HISTORY     - 1942     MONUMENTED       CGS
 HU0579  HISTORY     - 1963     MARK NOT FOUND   CGS
 HU0579
 HU0579                          STATION DESCRIPTION
 HU0579
 HU0579'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0579'1.1 MI W FROM DAMES QUARTER.
 HU0579'1.1 MILES WEST ALONG STATE HIGHWAY 363 FROM THE POST OFFICE AT
 HU0579'DAMES QUARTER, SOMERSET COUNTY, 5.6 FEET SOUTHEAST OF POLE 332,
 HU0579'67.5 FEET NORTHWEST ACROSS THE HIGHWAY FROM POLE 574, 42.6 FEET
 HU0579'NORTHWEST OF THE CENTERLINE OF THE HIGHWAY AND ABOUT 3 FEET LOWER
 HU0579'THAN THE HIGHWAY.  A STANDARD DISK, STAMPED A 57 1942 AND SET IN
 HU0579'THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0305 ***********************************************************************
 HU0305  DESIGNATION -  A 58
 HU0305  PID         -  HU0305
 HU0305  STATE/COUNTY-  MD/WORCESTER
 HU0305  COUNTRY     -  US
 HU0305  USGS QUAD   -  BOXIRON (2016)
 HU0305
 HU0305                         *CURRENT SURVEY CONTROL
 HU0305  ______________________________________________________________________
 HU0305* NAD 83(1986) POSITION- 38 07 20.     (N) 075 20 06.     (W)   SCALED
 HU0305* NAVD 88 ORTHO HEIGHT -    11.226 (meters)       36.83  (feet) ADJUSTED
 HU0305  ______________________________________________________________________
 HU0305  GEOID HEIGHT    -        -36.306 (meters)                     GEOID18
 HU0305  DYNAMIC HEIGHT  -         11.219 (meters)       36.81  (feet) COMP
 HU0305  MODELED GRAVITY -    979,979.3   (mgal)                       NAVD 88
 HU0305
 HU0305  VERT ORDER      -  SECOND    CLASS 0
 HU0305
 HU0305.The horizontal coordinates were scaled from a map and have
 HU0305.an estimated accuracy of +/- 6 seconds.
 HU0305
 HU0305.The orthometric height was determined by differential leveling and
 HU0305.adjusted by the NATIONAL GEODETIC SURVEY
 HU0305.in June 1991.
 HU0305
 HU0305.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0305.GEOID18 height accuracy estimate available here.
 HU0305
 HU0305.Click photographs - Photos may exist for this station.
 HU0305
 HU0305.The dynamic height is computed by dividing the NAVD 88
 HU0305.geopotential number by the normal gravity value computed on the
 HU0305.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0305.degrees latitude (g = 980.6199 gals.).
 HU0305
 HU0305.The modeled gravity was interpolated from observed gravity values.
 HU0305
 HU0305;                    North         East    Units  Estimated Accuracy
 HU0305;SPC MD       -    51,900.      546,000.      MT  (+/- 180 meters Scaled)
 HU0305
 HU0305_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH706194(NAD 83)
 HU0305
 HU0305                          SUPERSEDED SURVEY CONTROL
 HU0305
 HU0305  NGVD 29 (11/26/84)   11.468  (m)           37.62   (f) ADJUSTED    2 0
 HU0305
 HU0305.Superseded values are not recommended for survey control.
 HU0305
 HU0305.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0305.See file dsdata.pdf to determine how the superseded data were derived.
 HU0305
 HU0305_MARKER: DB = BENCH MARK DISK
 HU0305_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0305_STAMPING: A 58 1942
 HU0305_MARK LOGO: CGS
 HU0305_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0305+STABILITY: SURFACE MOTION
 HU0305
 HU0305  HISTORY     - Date     Condition        Report By
 HU0305  HISTORY     - 1942     MONUMENTED       CGS
 HU0305  HISTORY     - 20040120 MARK NOT FOUND   MDSHA
 HU0305
 HU0305                          STATION DESCRIPTION
 HU0305
 HU0305'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0305'2.7 MI N FROM GIRDLETREE.
 HU0305'2.7 MILES NORTH ALONG STATE HIGHWAY 12 FROM THE POST OFFICE AT
 HU0305'GIRDLETREE, WORCESTER COUNTY, THENCE 3.6 MILES SOUTHEAST ALONG A
 HU0305'DIRT ROAD, 41 FEET SOUTH OF THE CENTER OF THE JUNCTION OF A NEW
 HU0305'COUNTY ROAD, 127 FEET SOUTH OF POLE N 88, 48 FEET SOUTHWEST OF THE
 HU0305'CENTERLINE OF THE NEW COUNTY ROAD, 28 FEET SOUTHEAST OF THE
 HU0305'CENTERLINE OF THE DIRT ROAD, AND ABOUT LEVEL WITH THE DIRT ROAD.
 HU0305'A STANDARD DISK, STAMPED A 58 1942 AND SET IN THE TOP OF A CONCRETE
 HU0305'POST.
 HU0305
 HU0305                          STATION RECOVERY (2004)
 HU0305
 HU0305'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (SFK)
 HU0305'NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0472 ***********************************************************************
 HV0472  DESIGNATION -  A 59
 HV0472  PID         -  HV0472
 HV0472  STATE/COUNTY-  MD/DORCHESTER
 HV0472  COUNTRY     -  US
 HV0472  USGS QUAD   -  HONGA (2016)
 HV0472
 HV0472                         *CURRENT SURVEY CONTROL
 HV0472  ______________________________________________________________________
 HV0472* NAD 83(1986) POSITION- 38 20 26.     (N) 076 08 59.     (W)   SCALED
 HV0472* NAVD 88 ORTHO HEIGHT -     0.574 (meters)        1.88  (feet) ADJUSTED
 HV0472  ______________________________________________________________________
 HV0472  GEOID HEIGHT    -        -35.286 (meters)                     GEOID18
 HV0472  DYNAMIC HEIGHT  -          0.573 (meters)        1.88  (feet) COMP
 HV0472  MODELED GRAVITY -    979,995.4   (mgal)                       NAVD 88
 HV0472
 HV0472  VERT ORDER      -  SECOND    CLASS 0
 HV0472
 HV0472.The horizontal coordinates were scaled from a map and have
 HV0472.an estimated accuracy of +/- 6 seconds.
 HV0472
 HV0472.The orthometric height was determined by differential leveling and
 HV0472.adjusted by the NATIONAL GEODETIC SURVEY
 HV0472.in June 1991.
 HV0472
 HV0472.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0472.GEOID18 height accuracy estimate available here.
 HV0472
 HV0472.Click photographs - Photos may exist for this station.
 HV0472
 HV0472.The dynamic height is computed by dividing the NAVD 88
 HV0472.geopotential number by the normal gravity value computed on the
 HV0472.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0472.degrees latitude (g = 980.6199 gals.).
 HV0472
 HV0472.The modeled gravity was interpolated from observed gravity values.
 HV0472
 HV0472;                    North         East    Units  Estimated Accuracy
 HV0472;SPC MD       -    75,150.      474,330.      MT  (+/- 180 meters Scaled)
 HV0472
 HV0472_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH995442(NAD 83)
 HV0472
 HV0472                          SUPERSEDED SURVEY CONTROL
 HV0472
 HV0472  NGVD 29 (11/26/84)    0.798  (m)            2.62   (f) ADJUSTED    2 0
 HV0472
 HV0472.Superseded values are not recommended for survey control.
 HV0472
 HV0472.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0472.See file dsdata.pdf to determine how the superseded data were derived.
 HV0472
 HV0472_MARKER: DB = BENCH MARK DISK
 HV0472_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0472_SP_SET: CULVERT
 HV0472_STAMPING: A 59 1942
 HV0472_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0472
 HV0472  HISTORY     - Date     Condition        Report By
 HV0472  HISTORY     - 1942     MONUMENTED       CGS
 HV0472
 HV0472                          STATION DESCRIPTION
 HV0472
 HV0472'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0472'4 MI W FROM WINGATE.
 HV0472'THIS MARK IS ALONG HIGHWAY 336 ABOUT 4.0 MILES NORTHWEST FROM THE
 HV0472'COUNTY TRUST COMPANY BUILDING AT WINGATE, DORCHESTER COUNTY, ABOUT
 HV0472'8.2 MILES SOUTHEAST OF THE POST OFFICE AT GOLDEN HILL, 200 FEET
 HV0472'SOUTHEAST AND ACROSS THE HIGHWAY FROM A 2-STORY FARM HOUSE WITH A
 HV0472'MARBLE TOMB STONE IN THE NORTHEAST CORNER OF THE YARD, SET IN
 HV0472'THE SOUTH HEADWALL OF A CONCRETE CULVERT UNDER A FARM ROAD
 HV0472'RUNNING EAST FROM THE HIGHWAY, 19 FEET EAST OF THE CENTER LINE
 HV0472'OF THE HIGHWAY, ABOUT LEVEL WITH THE PAVEMENT AND IS A STANDARD
 HV0472'DISK SET IN THE HEADWALL OF A CULVERT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0429 ***********************************************************************
 HU0429  DESIGNATION -  A 6
 HU0429  PID         -  HU0429
 HU0429  STATE/COUNTY-  MD/WICOMICO
 HU0429  COUNTRY     -  US
 HU0429  USGS QUAD   -  SALISBURY (2016)
 HU0429
 HU0429                         *CURRENT SURVEY CONTROL
 HU0429  ______________________________________________________________________
 HU0429* NAD 83(1986) POSITION- 38 22 16.     (N) 075 35 28.     (W)   SCALED
 HU0429* NAVD 88 ORTHO HEIGHT -     9.129 (meters)       29.95  (feet) ADJUSTED
 HU0429  ______________________________________________________________________
 HU0429  GEOID HEIGHT    -        -35.816 (meters)                     GEOID18
 HU0429  DYNAMIC HEIGHT  -          9.123 (meters)       29.93  (feet) COMP
 HU0429  MODELED GRAVITY -    980,006.0   (mgal)                       NAVD 88
 HU0429
 HU0429  VERT ORDER      -  FIRST     CLASS I
 HU0429
 HU0429.The horizontal coordinates were scaled from a map and have
 HU0429.an estimated accuracy of +/- 6 seconds.
 HU0429
 HU0429.The orthometric height was determined by differential leveling and
 HU0429.adjusted by the NATIONAL GEODETIC SURVEY
 HU0429.in June 1991.
 HU0429
 HU0429.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0429.GEOID18 height accuracy estimate available here.
 HU0429
 HU0429.Click photographs - Photos may exist for this station.
 HU0429
 HU0429.The dynamic height is computed by dividing the NAVD 88
 HU0429.geopotential number by the normal gravity value computed on the
 HU0429.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0429.degrees latitude (g = 980.6199 gals.).
 HU0429
 HU0429.The modeled gravity was interpolated from observed gravity values.
 HU0429
 HU0429;                    North         East    Units  Estimated Accuracy
 HU0429;SPC MD       -    79,150.      523,110.      MT  (+/- 180 meters Scaled)
 HU0429
 HU0429_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH483471(NAD 83)
 HU0429
 HU0429                          SUPERSEDED SURVEY CONTROL
 HU0429
 HU0429  NGVD 29 (06/12/91)    9.386  (m)           30.79   (f) ADJUSTED    1 1
 HU0429  NGVD 29 (??/??/87)    9.377  (m)           30.76   (f) SUPERSEDED  1 1
 HU0429
 HU0429.Superseded values are not recommended for survey control.
 HU0429
 HU0429.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0429.See file dsdata.pdf to determine how the superseded data were derived.
 HU0429
 HU0429_MARKER: DB = BENCH MARK DISK
 HU0429_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HU0429_SP_SET: FOUNDATION
 HU0429_STAMPING: A 6 1935
 HU0429_MARK LOGO: CGS
 HU0429_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0429_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0429+SATELLITE: SATELLITE OBSERVATIONS - November 28, 1989
 HU0429
 HU0429  HISTORY     - Date     Condition        Report By
 HU0429  HISTORY     - 1935     MONUMENTED       CGS
 HU0429  HISTORY     - 1963     GOOD             CGS
 HU0429  HISTORY     - 19891128 GOOD             NGS
 HU0429  HISTORY     - 20050915 MARK NOT FOUND   USPSQD
 HU0429
 HU0429                          STATION DESCRIPTION
 HU0429
 HU0429'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0429'AT SALISBURY.
 HU0429'AT SALISBURY, AT THE PENNSYLVANIA RAILROAD STATION, SET
 HU0429'VERTICALLY IN THE SOUTHEAST FACE OF THE STONE FOUNDATION, NEAR
 HU0429'THE SOUTH CORNER OF THE STATION, 25 FEET NORTHWEST OF NORTHWEST
 HU0429'RAIL OF THE MAIN TRACK, 1 FOOT ABOVE LEVEL OF TRACK, AND ABOUT
 HU0429'1/2 FOOT ABOVE LEVEL OF BRICK PLATFORM WHICH SURROUNDS THE
 HU0429'STATION.
 HU0429
 HU0429                          STATION RECOVERY (1989)
 HU0429
 HU0429'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU0429'IN SALISBURY, AT 611 WEST RAILROAD AVENUE SET VERTICALLY IN THE EAST
 HU0429'FACE OF THE STONE FOUNDATION OF THE ENGLISH SING SYSTEMS BUILDING
 HU0429'(OLD RAILROAD STATION) AT 611 WEST RAILROAD AVENUE, 0.2 M (0.66 FT)
 HU0429'NORTH OF THE SOUTHEAST CORNER OF THE BUILDING, AND 0.2 M (0.66 FT)
 HU0429'ABOVE THE GROUND SURFACE.
 HU0429
 HU0429                          STATION RECOVERY (2005)
 HU0429
 HU0429'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 HU0429'BUILDING EXISTS BUT IS SURROUNDED BY EXTENSIVE CONSTRUCTION AND
 HU0429'MATERIALS MAKING A SIGHTING OF THE MARK IMPOSSIBLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7623 ***********************************************************************
 DG7623  DESIGNATION -  A 6 RM 2
 DG7623  PID         -  DG7623
 DG7623  STATE/COUNTY-  MD/CAROLINE
 DG7623  COUNTRY     -  US
 DG7623  USGS QUAD   -  GOLDSBORO (2017)
 DG7623
 DG7623                         *CURRENT SURVEY CONTROL
 DG7623  ______________________________________________________________________
 DG7623* NAD 83(1986) POSITION- 39 02 14.0    (N) 075 47 04.3    (W)   HD_HELD2
 DG7623* NAVD 88 ORTHO HEIGHT -    18.027 (meters)       59.14  (feet) ADJUSTED
 DG7623  ______________________________________________________________________
 DG7623  GEOID HEIGHT    -        -34.418 (meters)                     GEOID18
 DG7623  DYNAMIC HEIGHT  -         18.017 (meters)       59.11  (feet) COMP
 DG7623  MODELED GRAVITY -    980,067.2   (mgal)                       NAVD 88
 DG7623
 DG7623  VERT ORDER      -  SECOND    CLASS I
 DG7623
 DG7623.The horizontal coordinates were established by autonomous hand held GPS
 DG7623.observations and have an estimated accuracy of +/- 10 meters.
 DG7623
 DG7623.The orthometric height was determined by differential leveling and
 DG7623.adjusted by the NATIONAL GEODETIC SURVEY
 DG7623.in December 2004.
 DG7623
 DG7623.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7623.GEOID18 height accuracy estimate available here.
 DG7623
 DG7623.Click photographs - Photos may exist for this station.
 DG7623
 DG7623.The dynamic height is computed by dividing the NAVD 88
 DG7623.geopotential number by the normal gravity value computed on the
 DG7623.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7623.degrees latitude (g = 980.6199 gals.).
 DG7623
 DG7623.The modeled gravity was interpolated from observed gravity values.
 DG7623
 DG7623;                    North         East    Units  Estimated Accuracy
 DG7623;SPC MD       -   152,839.      505,229.      MT  (+/- 10 meters HH2 GPS)
 DG7623
 DG7623_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3210121199(NAD 83)
 DG7623
 DG7623                          SUPERSEDED SURVEY CONTROL
 DG7623
 DG7623.No superseded survey control is available for this station.
 DG7623
 DG7623_MARKER: DS = TRIANGULATION STATION DISK
 DG7623_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7623_STAMPING: A 6 RM 2 1943
 DG7623_MARK LOGO: CGS
 DG7623_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7623_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7623+STABILITY: SURFACE MOTION
 DG7623_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG7623+SATELLITE: SATELLITE OBSERVATIONS - October 29, 2005
 DG7623
 DG7623  HISTORY     - Date     Condition        Report By
 DG7623  HISTORY     - 1943     MONUMENTED       CGS
 DG7623  HISTORY     - 20021028 GOOD             MDSHA
 DG7623  HISTORY     - 20051029 GOOD             USPSQD
 DG7623
 DG7623                          STATION DESCRIPTION
 DG7623
 DG7623'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7623'THE STATION IS LOCATED IN THE TOWN OF GOLDSBORO, ALONG STATE HIGHWAY
 DG7623'287, ABOUT 125 FT (38.1 M) EAST OF THE JUNCTION OF STATE HIGHWAY 311,
 DG7623'THE STATION IS A COAST AND GEODETIC DISK SET IN THE TOP OF A 6 INCH
 DG7623'(15 CM) CONCRETE POST WHICH IS FLUSH WITH THE GROUND. IT IS 64.5 FT
 DG7623'(19.7 M) SOUTHWEST OF THE CENTER OF STATE HIGHWAY 287, 28.0 FT (8.5 M)
 DG7623'SOUTHEAST OF THE CENTER OF RAILROAD AVENUE, 47.5 FT (14.5 M) SOUTHWEST
 DG7623'OF TELEPHONE POLE 1, 22.5 FT (6.9 M) SOUTH OF THE SOUTHWEST LEG OF A
 DG7623'WOODEN TRIPLE POLE TOWER, 4.0 FT (1.2 M) EAST OF A 28 INCH (71 CM)
 DG7623'MAPLE TREE.
 DG7623
 DG7623                          STATION RECOVERY (2005)
 DG7623
 DG7623'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 DG7623'TRAVERSE STATION A6 1943 AND A6 RM 1 WERE BOTH RECOVERED IN THE AREA.
 DG7623'THE TRAVERSE STATION IS ABOUT 47 FEET N OF RM2 AND IS SCRATCHED.  RM1
 DG7623'IS LOCATED E OF THE TRAVERSE STATION, 20 FEET S OF THE CENTERLINE OF
 DG7623'287 AND IS IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0646 ***********************************************************************
 HU0646  DESIGNATION -  A 60
 HU0646  PID         -  HU0646
 HU0646  STATE/COUNTY-  MD/DORCHESTER
 HU0646  COUNTRY     -  US
 HU0646  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU0646
 HU0646                         *CURRENT SURVEY CONTROL
 HU0646  ______________________________________________________________________
 HU0646* NAD 83(1986) POSITION- 38 28 26.     (N) 075 50 29.     (W)   SCALED
 HU0646* NAVD 88 ORTHO HEIGHT -     2.263 (meters)        7.42  (feet) ADJUSTED
 HU0646  ______________________________________________________________________
 HU0646  GEOID HEIGHT    -        -35.481 (meters)                     GEOID18
 HU0646  DYNAMIC HEIGHT  -          2.261 (meters)        7.42  (feet) COMP
 HU0646  MODELED GRAVITY -    980,014.8   (mgal)                       NAVD 88
 HU0646
 HU0646  VERT ORDER      -  FIRST     CLASS II
 HU0646
 HU0646.The horizontal coordinates were scaled from a map and have
 HU0646.an estimated accuracy of +/- 6 seconds.
 HU0646
 HU0646.The orthometric height was determined by differential leveling and
 HU0646.adjusted by the NATIONAL GEODETIC SURVEY
 HU0646.in June 1991.
 HU0646
 HU0646.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0646.GEOID18 height accuracy estimate available here.
 HU0646
 HU0646.Click photographs - Photos may exist for this station.
 HU0646
 HU0646.The dynamic height is computed by dividing the NAVD 88
 HU0646.geopotential number by the normal gravity value computed on the
 HU0646.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0646.degrees latitude (g = 980.6199 gals.).
 HU0646
 HU0646.The modeled gravity was interpolated from observed gravity values.
 HU0646
 HU0646;                    North         East    Units  Estimated Accuracy
 HU0646;SPC MD       -    90,250.      501,100.      MT  (+/- 180 meters Scaled)
 HU0646
 HU0646_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH266587(NAD 83)
 HU0646
 HU0646                          SUPERSEDED SURVEY CONTROL
 HU0646
 HU0646  NGVD 29 (11/26/84)    2.504  (m)            8.22   (f) ADJUSTED    1 2
 HU0646
 HU0646.Superseded values are not recommended for survey control.
 HU0646
 HU0646.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0646.See file dsdata.pdf to determine how the superseded data were derived.
 HU0646
 HU0646_MARKER: DB = BENCH MARK DISK
 HU0646_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0646_STAMPING: A 60 1942
 HU0646_MARK LOGO: CGS
 HU0646_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0646+STABILITY: SURFACE MOTION
 HU0646
 HU0646  HISTORY     - Date     Condition        Report By
 HU0646  HISTORY     - 1942     MONUMENTED       CGS
 HU0646  HISTORY     - 1971     GOOD             NGS
 HU0646
 HU0646                          STATION DESCRIPTION
 HU0646
 HU0646'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0646'0.9 MI SW FROM VIENNA.
 HU0646'ABOUT 0.9 MILE SOUTHWEST ALONG A PAVED STREET FROM THE OLD VIENNA
 HU0646'HIGH SCHOOL BUILDING AT VIENNA, AT THE JUNCTION OF THE ROAD AND
 HU0646'STEEL NECK ROAD, 27 FEET NORTHWEST OF THE CENTER LINE OF THE ROAD,
 HU0646'47 1/2 FEET SOUTHEAST OF THE CENTER LINE OF STEEL NECK ROAD, 123.0
 HU0646'FEET EAST-NORTHEAST OF THE NORTHEAST CORNER OF A FRAME BUILDING,
 HU0646'83 FEET EAST OF A FORKED OAK TREE, 5 1/2 FEET NORTHEAST OF A
 HU0646'30-INCH PINE TREE WHICH IS THE MORE WESTERLY OF TWO PINE
 HU0646'TREES, 1.0 FOOT SOUTH OF A METAL WITNESS POST, ABOUT 1 FOOT ABOVE
 HU0646'THE LEVEL OF THE ROADS, AND SET IN THE TOP OF A CONCRETE POST
 HU0646'PROJECTING 6 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0301 ***********************************************************************
 HU0301  DESIGNATION -  A 61 RESET
 HU0301  PID         -  HU0301
 HU0301  STATE/COUNTY-  MD/WORCESTER
 HU0301  COUNTRY     -  US
 HU0301  USGS QUAD   -  SNOW HILL (2016)
 HU0301
 HU0301                         *CURRENT SURVEY CONTROL
 HU0301  ______________________________________________________________________
 HU0301* NAD 83(1986) POSITION- 38 11 23.     (N) 075 24 29.     (W)   SCALED
 HU0301* NAVD 88 ORTHO HEIGHT -     6.76  (meters)       22.2   (feet) RESET
 HU0301  ______________________________________________________________________
 HU0301  GEOID HEIGHT    -        -36.188 (meters)                     GEOID18
 HU0301  VERT ORDER      -  THIRD
 HU0301
 HU0301.The horizontal coordinates were scaled from a map and have
 HU0301.an estimated accuracy of +/- 6 seconds.
 HU0301
 HU0301.The orthometric height was computed from unverified reset data.
 HU0301
 HU0301.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0301.GEOID18 height accuracy estimate available here.
 HU0301
 HU0301.Click photographs - Photos may exist for this station.
 HU0301
 HU0301;                    North         East    Units  Estimated Accuracy
 HU0301;SPC MD       -    59,280.      539,460.      MT  (+/- 180 meters Scaled)
 HU0301
 HU0301_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH642269(NAD 83)
 HU0301
 HU0301                          SUPERSEDED SURVEY CONTROL
 HU0301
 HU0301  NGVD 29 (??/??/??)    7.00   (m)           23.0    (f) RESET       3  
 HU0301
 HU0301.Superseded values are not recommended for survey control.
 HU0301
 HU0301.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0301.See file dsdata.pdf to determine how the superseded data were derived.
 HU0301
 HU0301_MARKER: DB = BENCH MARK DISK
 HU0301_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0301_STAMPING: A 61 RESET 1955
 HU0301_MARK LOGO: CGS
 HU0301_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0301+STABILITY: SURFACE MOTION
 HU0301
 HU0301  HISTORY     - Date     Condition        Report By
 HU0301  HISTORY     - 1955     MONUMENTED       MDGS
 HU0301
 HU0301                          STATION DESCRIPTION
 HU0301
 HU0301'DESCRIBED BY MARYLAND GEODETIC SURVEY 1955
 HU0301'1 MI NW FROM SNOW HILL.
 HU0301'1.0 MILE NORTHWEST ALONG STATE HIGHWAY 12 FROM THE DRAWBRIDGE OVER
 HU0301'POCOMOKE RIVER AT SNOW HILL, WORCESTER COUNTY, AT THE INTERSECTION
 HU0301'OF STATE HIGHWAY 354, 135 FEET NORTH OF HIGHWAY 12, 24 FEET EAST
 HU0301'OF THE CENTERLINE OF HIGHWAY 354, AND 5 FEET SOUTH OF C AND P POLE
 HU0301'1.  A STANDARD DISK, STAMPED A 61 RESET 1955 AND SET IN THE TOP OF
 HU0301'A CONCRETE POST PROJECTING 3 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0015 ***********************************************************************
 HV0015  DESIGNATION -  A 62 RESET
 HV0015  PID         -  HV0015
 HV0015  STATE/COUNTY-  MD/TALBOT
 HV0015  COUNTRY     -  US
 HV0015  USGS QUAD   -  TRAPPE (2016)
 HV0015
 HV0015                         *CURRENT SURVEY CONTROL
 HV0015  ______________________________________________________________________
 HV0015* NAD 83(2011) POSITION- 38 41 01.43058(N) 076 03 29.24734(W)   ADJUSTED
 HV0015* NAD 83(2011) ELLIP HT-   -20.780 (meters)        (06/27/12)   ADJUSTED
 HV0015* NAD 83(2011) EPOCH   -  2010.00
 HV0015* NAVD 88 ORTHO HEIGHT -    14.108 (meters)       46.29  (feet) ADJUSTED
 HV0015  ______________________________________________________________________
 HV0015  GEOID HEIGHT    -        -34.858 (meters)                     GEOID18
 HV0015  NAD 83(2011) X  -  1,201,152.923 (meters)                     COMP
 HV0015  NAD 83(2011) Y  - -4,838,466.406 (meters)                     COMP
 HV0015  NAD 83(2011) Z  -  3,964,957.727 (meters)                     COMP
 HV0015  LAPLACE CORR    -         -3.35  (seconds)                    DEFLEC18
 HV0015  DYNAMIC HEIGHT  -         14.099 (meters)       46.26  (feet) COMP
 HV0015  MODELED GRAVITY -    980,027.1   (mgal)                       NAVD 88
 HV0015
 HV0015  VERT ORDER      -  FIRST     CLASS II
 HV0015
 HV0015  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0015  Standards:
 HV0015         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0015            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0015  -------------------------------------------------------------------
 HV0015  NETWORK    0.66   1.90           0.26   0.28   0.97     -0.06647589
 HV0015  -------------------------------------------------------------------
 HV0015  Click here for local accuracies and other accuracy information.
 HV0015
 HV0015.The horizontal coordinates were established by GPS observations
 HV0015.and adjusted by the National Geodetic Survey in June 2012.
 HV0015
 HV0015.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0015.been affixed to the stable North American tectonic plate. See 
 HV0015.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0015
 HV0015.The horizontal coordinates are valid at the epoch date displayed above
 HV0015.which is a decimal equivalence of Year/Month/Day.
 HV0015
 HV0015.The orthometric height was determined by differential leveling and
 HV0015.adjusted by the NATIONAL GEODETIC SURVEY
 HV0015.in June 1991.
 HV0015
 HV0015.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0015.GEOID18 height accuracy estimate available here.
 HV0015
 HV0015.Click photographs - Photos may exist for this station.
 HV0015
 HV0015.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0015
 HV0015.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0015
 HV0015.The ellipsoidal height was determined by GPS observations
 HV0015.and is referenced to NAD 83.
 HV0015
 HV0015.The dynamic height is computed by dividing the NAVD 88
 HV0015.geopotential number by the normal gravity value computed on the
 HV0015.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0015.degrees latitude (g = 980.6199 gals.).
 HV0015
 HV0015.The modeled gravity was interpolated from observed gravity values.
 HV0015
 HV0015. The following values were computed from the NAD 83(2011) position.
 HV0015
 HV0015;                    North         East     Units Scale Factor Converg.
 HV0015;SPC MD       -   113,320.842   481,948.184   MT  0.99995544   +0 35 28.2
 HV0015;SPC MD       -   371,786.80  1,581,191.67   sFT  0.99995544   +0 35 28.2
 HV0015;UTM  18      - 4,282,211.981   407,967.512   MT  0.99970430   -0 39 41.0
 HV0015
 HV0015!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0015!SPC MD       -   1.00000326  x   0.99995544  =   0.99995870
 HV0015!UTM  18      -   1.00000326  x   0.99970430  =   0.99970756
 HV0015
 HV0015_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0796782211(NAD 83)
 HV0015
 HV0015                          SUPERSEDED SURVEY CONTROL
 HV0015
 HV0015  NAD 83(2007)-  38 41 01.43082(N)    076 03 29.24805(W) AD(2002.00) 0
 HV0015  ELLIP H (02/10/07)  -20.750  (m)                       GP(2002.00)    
 HV0015  ELLIP H (08/30/02)  -20.752  (m)                       GP(       ) 4 2
 HV0015  NAD 83(1991)-  38 41 01.43122(N)    076 03 29.24833(W) AD(       ) 1
 HV0015  ELLIP H (08/02/96)  -20.699  (m)                       GP(       ) 3 1
 HV0015  NAD 83(1991)-  38 41 01.42943(N)    076 03 29.24756(W) AD(       ) 1
 HV0015  ELLIP H (01/27/92)  -20.751  (m)                       GP(       ) 4 1
 HV0015  NAD 83(1986)-  38 41 01.42735(N)    076 03 29.26374(W) AD(       ) 1
 HV0015  NAD 27      -  38 41 01.00604(N)    076 03 30.48397(W) AD(       ) 1
 HV0015  NAVD 88              14.11   (m)           46.3    (f) LEVELING    3  
 HV0015  NGVD 29              14.35   (m)           47.1    (f) LEVELING    3  
 HV0015  NGVD 29 (11/26/84)   14.345  (m)           47.06   (f) ADJUSTED    1 2
 HV0015
 HV0015.Superseded values are not recommended for survey control.
 HV0015
 HV0015.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0015.See file dsdata.pdf to determine how the superseded data were derived.
 HV0015
 HV0015_MARKER: DB = BENCH MARK DISK
 HV0015_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0015_STAMPING: A 62 RESET 1960
 HV0015_MARK LOGO: CGS
 HV0015_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0015_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0015+STABILITY: SURFACE MOTION
 HV0015_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0015+SATELLITE: SATELLITE OBSERVATIONS - October 02, 2002
 HV0015
 HV0015  HISTORY     - Date     Condition        Report By
 HV0015  HISTORY     - 1960     MONUMENTED       MDSRC
 HV0015  HISTORY     - 1974     GOOD             NGS
 HV0015  HISTORY     - 1986     GOOD             NGS
 HV0015  HISTORY     - 19960319 GOOD             MCCRON
 HV0015  HISTORY     - 20021002 GOOD             USPSQD
 HV0015
 HV0015                          STATION DESCRIPTION
 HV0015
 HV0015'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
 HV0015'2 MI N FROM TRAPPE.
 HV0015'ABOUT 0.15 MILES SOUTHEAST ALONG GREENFIELD AVE FROM THE POST
 HV0015'OFFICE AT TRAPPE, THENCE 1.8 MILES NORTH ALONG U.S. HWY 50, 0.3
 HV0015'MILES SOUTH OF THE TARBUTTON MILL ROAD INTERSECTION, 0.1 OF A
 HV0015'CONCRETE BLOCK BUILDING WITH A TIN ROOF, AT THE NORTHWEST CORNER
 HV0015'OF A SMALL WOODED AREA, 26 FEET NORTH OF THE EAST END OF A
 HV0015'CONCRETE PIPE UNDER U.S. HWY 50, 150 FEET NORTH OF POLE 2F 45, 57
 HV0015'FEET NORTHEAST OF THE NORTHEAST EDGE OF A CATCH BASIN IN THE
 HV0015'HIGHWAY MEDIAN, 27.5 FEET EAST OF THE NEAR EAST LANE OF THE
 HV0015'HIGHWAY, 1 FOOT WEST OF A METAL WITNESS POST, 2 FEET BELOW THE
 HV0015'HIGHWAY, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 HV0015'GROUND.
 HV0015
 HV0015                          STATION RECOVERY (1986)
 HV0015
 HV0015'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HV0015'RECOVERED AS DESCRIBED.
 HV0015
 HV0015                          STATION RECOVERY (1996)
 HV0015
 HV0015'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 HV0015'RECOVERED AS DESCRIBED.
 HV0015
 HV0015                          STATION RECOVERY (2002)
 HV0015
 HV0015'RECOVERY NOTE BY US POWER SQUADRON 2002 (KGS)
 HV0015'THE WITNESS POST IS MISSING.  THE MARK IS LOCATED 28 FT 4 INCHES FROM
 HV0015'THE CENTER OF THE NEAR EAST LANE OF ROUTE 50.  22 FEET TO THE CENTER
 HV0015'OF THE CONCRETE CULVERT PIPE.  47 FEET 6 INCHES SSW FROM POLE NUMBER
 HV0015'33839 4860.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0246 ***********************************************************************
 HV0246  DESIGNATION -  A 63
 HV0246  PID         -  HV0246
 HV0246  STATE/COUNTY-  MD/DORCHESTER
 HV0246  COUNTRY     -  US
 HV0246  USGS QUAD   -  CHURCH CREEK (2016)
 HV0246
 HV0246                         *CURRENT SURVEY CONTROL
 HV0246  ______________________________________________________________________
 HV0246* NAD 83(1986) POSITION- 38 34 40.     (N) 076 08 59.     (W)   SCALED
 HV0246* NAVD 88 ORTHO HEIGHT -     3.197 (meters)       10.49  (feet) ADJUSTED
 HV0246  ______________________________________________________________________
 HV0246  GEOID HEIGHT    -        -34.880 (meters)                     GEOID18
 HV0246  DYNAMIC HEIGHT  -          3.195 (meters)       10.48  (feet) COMP
 HV0246  MODELED GRAVITY -    980,019.8   (mgal)                       NAVD 88
 HV0246
 HV0246  VERT ORDER      -  SECOND    CLASS 0
 HV0246
 HV0246.The horizontal coordinates were scaled from a map and have
 HV0246.an estimated accuracy of +/- 6 seconds.
 HV0246
 HV0246.The orthometric height was determined by differential leveling and
 HV0246.adjusted by the NATIONAL GEODETIC SURVEY
 HV0246.in June 1991.
 HV0246
 HV0246.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0246.GEOID18 height accuracy estimate available here.
 HV0246
 HV0246.Click photographs - Photos may exist for this station.
 HV0246
 HV0246.The dynamic height is computed by dividing the NAVD 88
 HV0246.geopotential number by the normal gravity value computed on the
 HV0246.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0246.degrees latitude (g = 980.6199 gals.).
 HV0246
 HV0246.The modeled gravity was interpolated from observed gravity values.
 HV0246
 HV0246;                    North         East    Units  Estimated Accuracy
 HV0246;SPC MD       -   101,480.      474,090.      MT  (+/- 180 meters Scaled)
 HV0246
 HV0246_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH998705(NAD 83)
 HV0246
 HV0246                          SUPERSEDED SURVEY CONTROL
 HV0246
 HV0246  NGVD 29 (02/24/95)    3.429  (m)           11.25   (f) ADJUSTED    2 0
 HV0246  NGVD 29 (11/26/84)    3.433  (m)           11.26   (f) SUPERSEDED  2 0
 HV0246
 HV0246.Superseded values are not recommended for survey control.
 HV0246
 HV0246.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0246.See file dsdata.pdf to determine how the superseded data were derived.
 HV0246
 HV0246_MARKER: DB = BENCH MARK DISK
 HV0246_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0246_SP_SET: BRIDGE
 HV0246_STAMPING: A 63 1942
 HV0246_MARK LOGO: CGS
 HV0246_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0246
 HV0246  HISTORY     - Date     Condition        Report By
 HV0246  HISTORY     - 1942     MONUMENTED       CGS
 HV0246  HISTORY     - 20060209 MARK NOT FOUND   USPSQD
 HV0246
 HV0246                          STATION DESCRIPTION
 HV0246
 HV0246'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0246'4.1 MI NW FROM CAMBRIDGE.
 HV0246'ALONG STATE HIGHWAY 343, IN THE TOP OF THE SOUTH HEADWALL OF A
 HV0246'CONCRETE BRIDGE, 15 FEET SOUTH OF THE CENTER OF THE HIGHWAY, 13
 HV0246'FEET NORTHEAST OF POWER POLE NO. 160, 2 FEET EAST OF THE WEST
 HV0246'END OF THE HEADWALL.
 HV0246
 HV0246                          STATION RECOVERY (2006)
 HV0246
 HV0246'RECOVERY NOTE BY US POWER SQUADRON 2006
 HV0246'ROUTE 343 HAS RECENTLY BEEN REDONE.THERE IS NO BRIDGE AT THIS LOCATION
 HV0246'OR NEAR IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0248 ***********************************************************************
 HV0248  DESIGNATION -  A 63 RERESET
 HV0248  PID         -  HV0248
 HV0248  STATE/COUNTY-  MD/DORCHESTER
 HV0248  COUNTRY     -  US
 HV0248  USGS QUAD   -  CHURCH CREEK (2016)
 HV0248
 HV0248                         *CURRENT SURVEY CONTROL
 HV0248  ______________________________________________________________________
 HV0248* NAD 83(1986) POSITION- 38 34 40.     (N) 076 08 59.     (W)   SCALED
 HV0248* NAVD 88 ORTHO HEIGHT -     3.23  (+/-2cm)       10.6   (feet) VERTCON3
 HV0248  ______________________________________________________________________
 HV0248  GEOID HEIGHT    -        -34.880 (meters)                     GEOID18
 HV0248  VERT ORDER      -  THIRD (See Below)
 HV0248
 HV0248.The horizontal coordinates were scaled from a map and have
 HV0248.an estimated accuracy of +/- 6 seconds.
 HV0248
 HV0248.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0248.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0248
 HV0248.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0248.GEOID18 height accuracy estimate available here.
 HV0248
 HV0248.The vertical order pertains to the NGVD 29 superseded value.
 HV0248
 HV0248.Click photographs - Photos may exist for this station.
 HV0248
 HV0248;                    North         East    Units  Estimated Accuracy
 HV0248;SPC MD       -   101,480.      474,090.      MT  (+/- 180 meters Scaled)
 HV0248
 HV0248_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH998705(NAD 83)
 HV0248
 HV0248                          SUPERSEDED SURVEY CONTROL
 HV0248
 HV0248  NGVD 29 (??/??/??)    3.46   (m)           11.4    (f) RESET       3  
 HV0248
 HV0248.Superseded values are not recommended for survey control.
 HV0248
 HV0248.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0248.See file dsdata.pdf to determine how the superseded data were derived.
 HV0248
 HV0248_MARKER: DB = BENCH MARK DISK
 HV0248_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0248_STAMPING: A 63 RESET 1958
 HV0248_MARK LOGO: CGS
 HV0248_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0248+STABILITY: SURFACE MOTION
 HV0248
 HV0248  HISTORY     - Date     Condition        Report By
 HV0248  HISTORY     - 1958     MONUMENTED       MDBCSM
 HV0248  HISTORY     - 1978     MARK NOT FOUND   USGS
 HV0248
 HV0248                          STATION DESCRIPTION
 HV0248
 HV0248'DESCRIBED BY MD BUR SURV AND MAPS 1958
 HV0248'4.1 MI NW FROM CAMBRIDGE.
 HV0248'4.1 MILES NORTHWEST ALONG STATE HIGHWAY 343 FROM THE PILGRIM
 HV0248'HOLINESS CHURCH IN CAMBRIDGE, 43.4 FEET NORTH OF THE CENTER OF
 HV0248'EXISTING ROUTE 343, 24 FEET SOUTH OF THE EDGE OF WOODS, 87 FEET
 HV0248'WEST OF A DITCH, 1.5 FEET NORTH OF NEW POWER POLE NO. 92, AND
 HV0248'SET IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES.
 HV0248
 HV0248                          STATION RECOVERY (1978)
 HV0248
 HV0248'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1978
 HV0248'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0247 ***********************************************************************
 HV0247  DESIGNATION -  A 63 RESET
 HV0247  PID         -  HV0247
 HV0247  STATE/COUNTY-  MD/DORCHESTER
 HV0247  COUNTRY     -  US
 HV0247  USGS QUAD   -  CHURCH CREEK (2016)
 HV0247
 HV0247                         *CURRENT SURVEY CONTROL
 HV0247  ______________________________________________________________________
 HV0247* NAD 83(1986) POSITION- 38 34 40.     (N) 076 08 59.     (W)   SCALED
 HV0247* NAVD 88 ORTHO HEIGHT -     3.29  (meters)       10.8   (feet) RESET
 HV0247  ______________________________________________________________________
 HV0247  GEOID HEIGHT    -        -34.880 (meters)                     GEOID18
 HV0247  VERT ORDER      -  THIRD
 HV0247
 HV0247.The horizontal coordinates were scaled from a map and have
 HV0247.an estimated accuracy of +/- 6 seconds.
 HV0247
 HV0247.The orthometric height was computed from unverified reset data.
 HV0247
 HV0247.No vertical observational check was made to the station.
 HV0247
 HV0247.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0247.GEOID18 height accuracy estimate available here.
 HV0247
 HV0247.Click photographs - Photos may exist for this station.
 HV0247
 HV0247;                    North         East    Units  Estimated Accuracy
 HV0247;SPC MD       -   101,480.      474,090.      MT  (+/- 180 meters Scaled)
 HV0247
 HV0247_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH998705(NAD 83)
 HV0247
 HV0247                          SUPERSEDED SURVEY CONTROL
 HV0247
 HV0247  NGVD 29 (??/??/??)    3.52   (m)           11.5    (f) RESET       3  
 HV0247
 HV0247.Superseded values are not recommended for survey control.
 HV0247
 HV0247.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0247.See file dsdata.pdf to determine how the superseded data were derived.
 HV0247
 HV0247_MARKER: DB = BENCH MARK DISK
 HV0247_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0247_STAMPING: A 63 RESET 1957
 HV0247_MARK LOGO: CGS
 HV0247_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0247+STABILITY: SURFACE MOTION
 HV0247
 HV0247  HISTORY     - Date     Condition        Report By
 HV0247  HISTORY     - 1957     MONUMENTED       MDDT
 HV0247
 HV0247                          STATION DESCRIPTION
 HV0247
 HV0247'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1957
 HV0247'4.1 MI NW FROM CAMBRIDGE.
 HV0247'4.1 MILES NORTHWEST ALONG STATE HIGHWAY 343 FROM PILGRIM HOLINESS
 HV0247'CHURCH AT CAMBRIDGE, 87.2 FEET WEST OF A CULVERT, 26 FEET NORTH
 HV0247'OF THE CENTER OF STATE HIGHWAY 343 AND 3.2 FEET NORTHEAST OF
 HV0247'POWER POLE NO. 92.  A STANDARD DISK, STAMPED A 63 RESET 1957
 HV0247'SET IN A CONCRETE POST PROJECTING 6 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0967 ***********************************************************************
 HU0967  DESIGNATION -  A 65
 HU0967  PID         -  HU0967
 HU0967  STATE/COUNTY-  MD/DORCHESTER
 HU0967  COUNTRY     -  US
 HU0967  USGS QUAD   -  SEAFORD WEST (2016)
 HU0967
 HU0967                         *CURRENT SURVEY CONTROL
 HU0967  ______________________________________________________________________
 HU0967* NAD 83(1991) POSITION- 38 37 59.77631(N) 075 42 53.47149(W)   ADJUSTED
 HU0967* NAVD 88 ORTHO HEIGHT -    13.416 (meters)       44.02  (feet) ADJUSTED
 HU0967  ______________________________________________________________________
 HU0967  GEOID HEIGHT    -        -35.485 (meters)                     GEOID18
 HU0967  LAPLACE CORR    -         -2.62  (seconds)                    DEFLEC18
 HU0967  DYNAMIC HEIGHT  -         13.408 (meters)       43.99  (feet) COMP
 HU0967  MODELED GRAVITY -    980,016.3   (mgal)                       NAVD 88
 HU0967
 HU0967  HORZ ORDER      -  SECOND
 HU0967  VERT ORDER      -  SECOND    CLASS 0
 HU0967
 HU0967.The horizontal coordinates were established by classical geodetic methods
 HU0967.and adjusted by the National Geodetic Survey in January 1992.
 HU0967
 HU0967.The orthometric height was determined by differential leveling and
 HU0967.adjusted by the NATIONAL GEODETIC SURVEY
 HU0967.in June 1991.
 HU0967
 HU0967.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0967.GEOID18 height accuracy estimate available here.
 HU0967
 HU0967.Click photographs - Photos may exist for this station.
 HU0967
 HU0967.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0967
 HU0967.The dynamic height is computed by dividing the NAVD 88
 HU0967.geopotential number by the normal gravity value computed on the
 HU0967.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0967.degrees latitude (g = 980.6199 gals.).
 HU0967
 HU0967.The modeled gravity was interpolated from observed gravity values.
 HU0967
 HU0967. The following values were computed from the NAD 83(1991) position.
 HU0967
 HU0967;                    North         East     Units Scale Factor Converg.
 HU0967;SPC MD       -   108,084.478   511,891.728   MT  0.99995876   +0 48 23.8
 HU0967;SPC MD       -   354,607.16  1,679,431.44   sFT  0.99995876   +0 48 23.8
 HU0967;UTM  18      - 4,276,323.910   437,780.987   MT  0.99964767   -0 26 46.8
 HU0967
 HU0967!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0967!SPC MD       -   1.00000346  x   0.99995876  =   0.99996222
 HU0967!UTM  18      -   1.00000346  x   0.99964767  =   0.99965113
 HU0967
 HU0967_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3778076323(NAD 83)
 HU0967
 HU0967                          SUPERSEDED SURVEY CONTROL
 HU0967
 HU0967  NAD 83(1986)-  38 37 59.77081(N)    075 42 53.49013(W) AD(       ) 2
 HU0967  NAD 27      -  38 37 59.35430(N)    075 42 54.72650(W) AD(       ) 2
 HU0967  NGVD 29              13.78   (m)           45.2    (f) LEVELING    3  
 HU0967  NGVD 29 (11/26/84)   13.659  (m)           44.81   (f) ADJUSTED    2 0
 HU0967
 HU0967.Superseded values are not recommended for survey control.
 HU0967
 HU0967.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0967.See file dsdata.pdf to determine how the superseded data were derived.
 HU0967
 HU0967_MARKER: DB = BENCH MARK DISK
 HU0967_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0967_STAMPING: A 65 1942
 HU0967_MARK LOGO: CGS
 HU0967_PROJECTION: PROJECTING 13 CENTIMETERS
 HU0967_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0967+STABILITY: SURFACE MOTION
 HU0967
 HU0967  HISTORY     - Date     Condition        Report By
 HU0967  HISTORY     - 1962     MONUMENTED       CGS
 HU0967  HISTORY     - 1962     GOOD             CGS
 HU0967  HISTORY     - 1975     MARK NOT FOUND   NGS
 HU0967  HISTORY     - 20130105 MARK NOT FOUND   DELCOS
 HU0967
 HU0967                          STATION DESCRIPTION
 HU0967
 HU0967'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0967'THE BENCH MARK, A STANDARD COAST AND GEODETIC SURVEY
 HU0967'BENCH MARK DISK STAMPED A65 1942, IS SET IN TOP OF A 6 INCH
 HU0967'SQUARE CONCRETE MONUMENT PROJECTING ABOUT 5 INCHES ABOVE THE
 HU0967'SURFACE OF THE GROUND.  IT IS 91.0 FEET NORTHWEST OF THE
 HU0967'CENTERLINE OF THE INTERSECTION OF A DRIVEWAY, 24.3 FEET
 HU0967'NORTHEAST OF THE CENTERLINE OF U.S. HIGHWAY 20, 4.0 FEET WEST
 HU0967'OF A STANDARD METAL WITNESS POST AND MARKER, 1.0 FEET
 HU0967'SOUTHWEST OF A FENCE LINE AND ABOUT 1.0 FOOT LOWER THAN THE
 HU0967'SURFACE OF THE HIGHWAY.
 HU0967'
 HU0967'TO REACH BENCH MARK A65, GO NORTH ON THE
 HU0967'STATE LINE ROAD FOR 0.1 MILE TO THE JUNCTION OF U.S. HIGHWAY
 HU0967'20 AND STATE HIGHWAY 577.  TURN LEFT AND GO SOUTHWEST ON
 HU0967'U.S. HIGHWAY 20 FOR 0.4 MILE TO A STANDARD METAL WITNESS POST AND
 HU0967'MARKER AND MARK ON THE RIGHT, NORTH SIDE OF THE HIGHWAY.
 HU0967
 HU0967                          STATION RECOVERY (1962)
 HU0967
 HU0967'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962
 HU0967'0.4 MI SW FROM RELIANCE.
 HU0967'0.4 MILE SOUTHWEST ALONG HIGHWAY 20 FROM THE T JUNCTION OF
 HU0967'HIGHWAY 20 AND ROAD NUMBER 577 AT RELIANCE, DORCHESTER COUNTY,
 HU0967'24.4 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 1.0 FOOT
 HU0967'SOUTHEAST OF A FENCE, 92.5 FEET WEST AND ACROSS THE HIGHWAY FROM
 HU0967'A DIRT ROAD WHICH LEADS TO A 2-STORY UNPAINTED HOUSE, 2.0 FEET
 HU0967'FROM A STANDARD REFERENCE POST, A U.S.C. AND G.S. DISK SET IN THE
 HU0967'TOP OF A CONCRETE POST.  NOTE-- IT WAS REPORTED IN 1943 THAT THIS
 HU0967'MARK IS ACROSS THE ROAD FROM HIGHWAY STATION 31 ON ROUTE 392.
 HU0967
 HU0967                          STATION RECOVERY (1975)
 HU0967
 HU0967'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HU0967'MARK NOT FOUND.
 HU0967
 HU0967                          STATION RECOVERY (2013)
 HU0967
 HU0967'RECOVERY NOTE BY DELAWARE COASTAL PROGRAM 2013
 HU0967'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0905 ***********************************************************************
 HU0905  DESIGNATION -  A 66
 HU0905  PID         -  HU0905
 HU0905  STATE/COUNTY-  MD/CAROLINE
 HU0905  COUNTRY     -  US
 HU0905  USGS QUAD   -  FEDERALSBURG (2016)
 HU0905
 HU0905                         *CURRENT SURVEY CONTROL
 HU0905  ______________________________________________________________________
 HU0905* NAD 83(1986) POSITION- 38 40 42.     (N) 075 45 19.     (W)   SCALED
 HU0905* NAVD 88 ORTHO HEIGHT -    11.905 (meters)       39.06  (feet) ADJUSTED
 HU0905  ______________________________________________________________________
 HU0905  GEOID HEIGHT    -        -35.375 (meters)                     GEOID18
 HU0905  DYNAMIC HEIGHT  -         11.898 (meters)       39.04  (feet) COMP
 HU0905  MODELED GRAVITY -    980,020.4   (mgal)                       NAVD 88
 HU0905
 HU0905  VERT ORDER      -  SECOND    CLASS 0
 HU0905
 HU0905.The horizontal coordinates were scaled from a map and have
 HU0905.an estimated accuracy of +/- 6 seconds.
 HU0905
 HU0905.The orthometric height was determined by differential leveling and
 HU0905.adjusted by the NATIONAL GEODETIC SURVEY
 HU0905.in June 1991.
 HU0905
 HU0905.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0905.GEOID18 height accuracy estimate available here.
 HU0905
 HU0905.Click photographs - Photos may exist for this station.
 HU0905
 HU0905.The dynamic height is computed by dividing the NAVD 88
 HU0905.geopotential number by the normal gravity value computed on the
 HU0905.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0905.degrees latitude (g = 980.6199 gals.).
 HU0905
 HU0905.The modeled gravity was interpolated from observed gravity values.
 HU0905
 HU0905;                    North         East    Units  Estimated Accuracy
 HU0905;SPC MD       -   113,040.      508,300.      MT  (+/- 180 meters Scaled)
 HU0905
 HU0905_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH343813(NAD 83)
 HU0905
 HU0905                          SUPERSEDED SURVEY CONTROL
 HU0905
 HU0905  NGVD 29 (11/26/84)   12.148  (m)           39.86   (f) ADJUSTED    2 0
 HU0905
 HU0905.Superseded values are not recommended for survey control.
 HU0905
 HU0905.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0905.See file dsdata.pdf to determine how the superseded data were derived.
 HU0905
 HU0905_MARKER: DB = BENCH MARK DISK
 HU0905_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0905_STAMPING: A 66 1942
 HU0905_MARK LOGO: CGS
 HU0905_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0905+STABILITY: SURFACE MOTION
 HU0905
 HU0905  HISTORY     - Date     Condition        Report By
 HU0905  HISTORY     - 1942     MONUMENTED       CGS
 HU0905  HISTORY     - 1965     GOOD             CGS
 HU0905  HISTORY     - 1982     MARK NOT FOUND   USGS
 HU0905
 HU0905                          STATION DESCRIPTION
 HU0905
 HU0905'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0905'1.4 MI SE FROM FEDERALSBURG.
 HU0905'1.4 MILES SOUTHEAST ALONG HIGHWAY 313 FROM THE T JUNCTION OF
 HU0905'HIGHWAY 313 AND 306, 26.2 FEET NORTHEAST OF THE CENTER LINE OF THE
 HU0905'HIGHWAY, 2.0 FEET NORTHWEST OF POLE NUMBER 17-L, ABOUT LEVEL WITH
 HU0905'THE HIGHWAY, NEAR A STANDARD REFERENCE POST.  NOTE-- MARK IS NOW
 HU0905'4.0 FEET NORTHWEST OF UTILITY POLE 62.
 HU0905
 HU0905                          STATION RECOVERY (1965)
 HU0905
 HU0905'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0905'RECOVERED IN GOOD CONDITION.
 HU0905
 HU0905                          STATION RECOVERY (1982)
 HU0905
 HU0905'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1982
 HU0905'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0918 ***********************************************************************
 HU0918  DESIGNATION -  A 67
 HU0918  PID         -  HU0918
 HU0918  STATE/COUNTY-  MD/CAROLINE
 HU0918  COUNTRY     -  US
 HU0918  USGS QUAD   -  HOBBS (2017)
 HU0918
 HU0918                         *CURRENT SURVEY CONTROL
 HU0918  ______________________________________________________________________
 HU0918* NAD 83(1986) POSITION- 38 47 28.6    (N) 075 49 12.1    (W)   HD_HELD2
 HU0918* NAVD 88 ORTHO HEIGHT -    16.156 (meters)       53.01  (feet) ADJUSTED
 HU0918  ______________________________________________________________________
 HU0918  GEOID HEIGHT    -        -35.076 (meters)                     GEOID18
 HU0918  DYNAMIC HEIGHT  -         16.146 (meters)       52.97  (feet) COMP
 HU0918  MODELED GRAVITY -    980,031.0   (mgal)                       NAVD 88
 HU0918
 HU0918  VERT ORDER      -  SECOND    CLASS I
 HU0918
 HU0918.The horizontal coordinates were established by autonomous hand held GPS
 HU0918.observations and have an estimated accuracy of +/- 10 meters.
 HU0918
 HU0918.The orthometric height was determined by differential leveling and
 HU0918.adjusted by the NATIONAL GEODETIC SURVEY
 HU0918.in December 2004.
 HU0918
 HU0918.No vertical observational check was made to the station.
 HU0918
 HU0918.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0918.GEOID18 height accuracy estimate available here.
 HU0918
 HU0918.Click photographs - Photos may exist for this station.
 HU0918
 HU0918.The dynamic height is computed by dividing the NAVD 88
 HU0918.geopotential number by the normal gravity value computed on the
 HU0918.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0918.degrees latitude (g = 980.6199 gals.).
 HU0918
 HU0918.The modeled gravity was interpolated from observed gravity values.
 HU0918
 HU0918;                    North         East    Units  Estimated Accuracy
 HU0918;SPC MD       -   125,499.      502,508.      MT  (+/- 10 meters HH2 GPS)
 HU0918
 HU0918_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2878393934(NAD 83)
 HU0918
 HU0918                          SUPERSEDED SURVEY CONTROL
 HU0918
 HU0918  NAVD 88 (06/15/91)   16.161  (m)           53.02   (f) SUPERSEDED  2 0
 HU0918  NGVD 29 (11/26/84)   16.402  (m)           53.81   (f) ADJUSTED    2 0
 HU0918
 HU0918.Superseded values are not recommended for survey control.
 HU0918
 HU0918.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0918.See file dsdata.pdf to determine how the superseded data were derived.
 HU0918
 HU0918_MARKER: DB = BENCH MARK DISK
 HU0918_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0918_STAMPING: A 67 1942
 HU0918_MARK LOGO: CGS
 HU0918_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0918_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0918+STABILITY: SURFACE MOTION
 HU0918_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0918+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2002
 HU0918
 HU0918  HISTORY     - Date     Condition        Report By
 HU0918  HISTORY     - 1942     MONUMENTED       CGS
 HU0918  HISTORY     - 1965     GOOD             CGS
 HU0918  HISTORY     - 20020605 GOOD             MDSHA
 HU0918
 HU0918                          STATION DESCRIPTION
 HU0918
 HU0918'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0918'1.8 MI N FROM AMERICAN CORNERS.
 HU0918'1.75 MILES NORTH ALONG HIGHWAY 313 FROM THE INTERSECTION OF HIGHWAYS
 HU0918'313 AND 621 AT AMERICAN CORNERS, 26.0 FEET SOUTHWEST OF THE CENTER
 HU0918'OF THE HIGHWAY, 31 FEET SOUTHWEST OF A POWER POLE, SET IN THE
 HU0918'NORTH CORNER OF A YARD, 34.8 FEET NORTH OF THE NORTH CORNER OF
 HU0918'AN UNPAINTED HOUSE, ABOUT LEVEL WITH THE GROUND.  NOTE-- SHOULD
 HU0918'READ 31 FEET SOUTHEAST OF A POWER POLE AND 6 FEET NORTH OF A 12
 HU0918'INCH TREE.
 HU0918
 HU0918                          STATION RECOVERY (1965)
 HU0918
 HU0918'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0918'RECOVERED IN GOOD CONDITION.
 HU0918
 HU0918                          STATION RECOVERY (2002)
 HU0918
 HU0918'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0918'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0877 ***********************************************************************
 HU0877  DESIGNATION -  A 68
 HU0877  PID         -  HU0877
 HU0877  STATE/COUNTY-  MD/TALBOT
 HU0877  COUNTRY     -  US
 HU0877  USGS QUAD   -  FOWLING CREEK (2017)
 HU0877
 HU0877                         *CURRENT SURVEY CONTROL
 HU0877  ______________________________________________________________________
 HU0877* NAD 83(1986) POSITION- 38 50 55.     (N) 075 59 04.     (W)   SCALED
 HU0877* NAVD 88 ORTHO HEIGHT -    18.742 (meters)       61.49  (feet) ADJUSTED
 HU0877  ______________________________________________________________________
 HU0877  GEOID HEIGHT    -        -34.662 (meters)                     GEOID18
 HU0877  DYNAMIC HEIGHT  -         18.731 (meters)       61.45  (feet) COMP
 HU0877  MODELED GRAVITY -    980,043.0   (mgal)                       NAVD 88
 HU0877
 HU0877  VERT ORDER      -  SECOND    CLASS 0
 HU0877
 HU0877.The horizontal coordinates were scaled from a map and have
 HU0877.an estimated accuracy of +/- 6 seconds.
 HU0877
 HU0877.The orthometric height was determined by differential leveling and
 HU0877.adjusted by the NATIONAL GEODETIC SURVEY
 HU0877.in June 1991.
 HU0877
 HU0877.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0877.GEOID18 height accuracy estimate available here.
 HU0877
 HU0877.Click photographs - Photos may exist for this station.
 HU0877
 HU0877.The dynamic height is computed by dividing the NAVD 88
 HU0877.geopotential number by the normal gravity value computed on the
 HU0877.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0877.degrees latitude (g = 980.6199 gals.).
 HU0877
 HU0877.The modeled gravity was interpolated from observed gravity values.
 HU0877
 HU0877;                    North         East    Units  Estimated Accuracy
 HU0877;SPC MD       -   131,690.      488,160.      MT  (+/- 180 meters Scaled)
 HU0877
 HU0877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ145004(NAD 83)
 HU0877
 HU0877                          SUPERSEDED SURVEY CONTROL
 HU0877
 HU0877  NGVD 29 (11/26/84)   18.978  (m)           62.26   (f) ADJUSTED    2 0
 HU0877
 HU0877.Superseded values are not recommended for survey control.
 HU0877
 HU0877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0877.See file dsdata.pdf to determine how the superseded data were derived.
 HU0877
 HU0877_MARKER: DB = BENCH MARK DISK
 HU0877_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0877_STAMPING: A 68 1942
 HU0877_MARK LOGO: CGS
 HU0877_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0877+STABILITY: SURFACE MOTION
 HU0877
 HU0877  HISTORY     - Date     Condition        Report By
 HU0877  HISTORY     - 1942     MONUMENTED       CGS
 HU0877  HISTORY     - 1965     MARK NOT FOUND   CGS
 HU0877
 HU0877                          STATION DESCRIPTION
 HU0877
 HU0877'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0877'2.1 MI S FROM CORDOVA.
 HU0877'2.1 MILES SOUTH ALONG MACADAM ROAD FROM THE RAILROAD STATION AT
 HU0877'CORDOVA, TALBOT COUNTY, 22.3 FEET NORTHEAST OF THE CENTER LINE
 HU0877'OF THE MACADAM ROAD.  3.6 FEET NORTHEAST OF NORTHWEST CORNER OF A
 HU0877'WIRE FENCE WHICH RUNS NORTHEAST FROM THE ROAD, 2.0 FEET SOUTHWEST
 HU0877'OF A STANDARD REFERENCE POST.
 HU0877
 HU0877                          STATION RECOVERY (1965)
 HU0877
 HU0877'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0877'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6512 ***********************************************************************
 JV6512  DESIGNATION -  A 69 RESET
 JV6512  PID         -  JV6512
 JV6512  STATE/COUNTY-  MD/KENT
 JV6512  COUNTRY     -  US
 JV6512  USGS QUAD   -  CHESTERTOWN (2017)
 JV6512
 JV6512                         *CURRENT SURVEY CONTROL
 JV6512  ______________________________________________________________________
 JV6512* NAD 83(1986) POSITION- 39 12 30.7    (N) 076 03 42.3    (W)   HD_HELD2
 JV6512* NAVD 88 ORTHO HEIGHT -     3.827 (meters)       12.56  (feet) ADJUSTED
 JV6512  ______________________________________________________________________
 JV6512  GEOID HEIGHT    -        -33.452 (meters)                     GEOID18
 JV6512  DYNAMIC HEIGHT  -          3.825 (meters)       12.55  (feet) COMP
 JV6512  MODELED GRAVITY -    980,108.1   (mgal)                       NAVD 88
 JV6512
 JV6512  VERT ORDER      -  FIRST     CLASS II
 JV6512
 JV6512.The horizontal coordinates were established by autonomous hand held GPS
 JV6512.observations and have an estimated accuracy of +/- 10 meters.
 JV6512
 JV6512.The orthometric height was determined by differential leveling and
 JV6512.adjusted by the NATIONAL GEODETIC SURVEY
 JV6512.in July 2019.
 JV6512
 JV6512.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6512.GEOID18 height accuracy estimate available here.
 JV6512
 JV6512.Click photographs - Photos may exist for this station.
 JV6512
 JV6512.The dynamic height is computed by dividing the NAVD 88
 JV6512.geopotential number by the normal gravity value computed on the
 JV6512.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6512.degrees latitude (g = 980.6199 gals.).
 JV6512
 JV6512.The modeled gravity was interpolated from observed gravity values.
 JV6512
 JV6512;                    North         East    Units  Estimated Accuracy
 JV6512;SPC MD       -   171,572.      481,034.      MT  (+/- 10 meters HH2 GPS)
 JV6512
 JV6512_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0833040454(NAD 83)
 JV6512
 JV6512                          SUPERSEDED SURVEY CONTROL
 JV6512
 JV6512  NAVD 88 (11/18/05)    3.830  (m)           12.57   (f) SUPERSEDED  3 0
 JV6512  NGVD 29 (11/18/05)    4.07   (m)           13.4    (f) RESET       3  
 JV6512
 JV6512.Superseded values are not recommended for survey control.
 JV6512
 JV6512.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6512.See file dsdata.pdf to determine how the superseded data were derived.
 JV6512
 JV6512_MARKER: DV = VERTICAL CONTROL DISK
 JV6512_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV6512_SP_SET: BRIDGE ABUTMENT
 JV6512_STAMPING: A 69 RESET 1988
 JV6512_MARK LOGO: NGS
 JV6512_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6512_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6512+SATELLITE: SATELLITE OBSERVATIONS - July 29, 2025
 JV6512
 JV6512  HISTORY     - Date     Condition        Report By
 JV6512  HISTORY     - 1989     MONUMENTED       NGS
 JV6512  HISTORY     - 20011229 GOOD             USPSQD
 JV6512  HISTORY     - 20050814 GOOD             USPSQD
 JV6512  HISTORY     - 20120521 GOOD             MDSHA
 JV6512  HISTORY     - 20140117 GOOD             ARCSHE
 JV6512  HISTORY     - 20250729 GOOD             PROFLN
 JV6512
 JV6512                          STATION DESCRIPTION
 JV6512
 JV6512'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6512'THE MARK IS LOCATED AT THE NORTHWEST END OF THE STATE HIGHWAY 213
 JV6512'BRIDGE OVER THE CHESTER RIVER IN THE TOWN OF CHESTERTOWN.  IT IS ON
 JV6512'THE MOST SOUTHERLY PARAPET WALL AND NEAR THE NORTHWEST SIDE OF A LARGE
 JV6512'CONCRETE PILLAR THAT SUPPORTS A STREET LIGHT.  IT IS 5.64 M (18.5 FT)
 JV6512'SOUTHWEST OF THE CENTER OF STATE HIGHWAY 213 WHERE IT CROSSES THE
 JV6512'BRIDGE, 66.14 M (217.0 FT) SOUTHEAST OF THE CENTER OF THE INTERSECTION
 JV6512'OF STATE HIGHWAY 213 (MAPLE  AVENUE) AND WATER STREET, 21.49 M
 JV6512'(70.5 FT) SOUTHEAST OF A DROP INLET ALONG THE SOUTHWEST SIDE OF STATE
 JV6512'HIGHWAY 213, 0.55 M (1.8 FT) NORTH OF THE SOUTHEAST EDGE OF THE LARGE
 JV6512'PILLAR AND 1.07 M (3.5 FT) ABOVE THE SIDEWALK.
 JV6512
 JV6512                          STATION RECOVERY (2001)
 JV6512
 JV6512'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV6512'RECOVERED IN GOOD CONDITION.
 JV6512
 JV6512                          STATION RECOVERY (2005)
 JV6512
 JV6512'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 JV6512'RECOVERED IN GOOD CONDITION.
 JV6512
 JV6512                          STATION RECOVERY (2012)
 JV6512
 JV6512'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2012 (WAC)
 JV6512'RECOVERED AS DESCRIBED.
 JV6512
 JV6512                          STATION RECOVERY (2014)
 JV6512
 JV6512'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV6512'RECOVERED IN GOOD CONDITION.
 JV6512
 JV6512                          STATION RECOVERY (2025)
 JV6512
 JV6512'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV6512'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0338 ***********************************************************************
 JV0338  DESIGNATION -  A 70
 JV0338  PID         -  JV0338
 JV0338  STATE/COUNTY-  MD/KENT
 JV0338  COUNTRY     -  US
 JV0338  USGS QUAD   -  ROCK HALL (2016)
 JV0338
 JV0338                         *CURRENT SURVEY CONTROL
 JV0338  ______________________________________________________________________
 JV0338* NAD 83(1986) POSITION- 39 08 49.4    (N) 076 14 13.9    (W)   HD_HELD2
 JV0338* NAVD 88 ORTHO HEIGHT -     3.968 (meters)       13.02  (feet) ADJUSTED
 JV0338  ______________________________________________________________________
 JV0338  GEOID HEIGHT    -        -33.341 (meters)                     GEOID18
 JV0338  DYNAMIC HEIGHT  -          3.966 (meters)       13.01  (feet) COMP
 JV0338  MODELED GRAVITY -    980,105.9   (mgal)                       NAVD 88
 JV0338
 JV0338  VERT ORDER      -  SECOND    CLASS 0
 JV0338
 JV0338.The horizontal coordinates were established by autonomous hand held GPS
 JV0338.observations and have an estimated accuracy of +/- 10 meters.
 JV0338
 JV0338.The orthometric height was determined by differential leveling and
 JV0338.adjusted by the NATIONAL GEODETIC SURVEY
 JV0338.in June 1991.
 JV0338
 JV0338.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0338.GEOID18 height accuracy estimate available here.
 JV0338
 JV0338.Click photographs - Photos may exist for this station.
 JV0338
 JV0338.The dynamic height is computed by dividing the NAVD 88
 JV0338.geopotential number by the normal gravity value computed on the
 JV0338.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0338.degrees latitude (g = 980.6199 gals.).
 JV0338
 JV0338.The modeled gravity was interpolated from observed gravity values.
 JV0338
 JV0338;                    North         East    Units  Estimated Accuracy
 JV0338;SPC MD       -   164,607.      465,939.      MT  (+/- 10 meters HH2 GPS)
 JV0338
 JV0338_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9308933824(NAD 83)
 JV0338
 JV0338                          SUPERSEDED SURVEY CONTROL
 JV0338
 JV0338  NGVD 29 (11/26/84)    4.215  (m)           13.83   (f) ADJUSTED    2 0
 JV0338
 JV0338.Superseded values are not recommended for survey control.
 JV0338
 JV0338.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0338.See file dsdata.pdf to determine how the superseded data were derived.
 JV0338
 JV0338_MARKER: DB = BENCH MARK DISK
 JV0338_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0338_STAMPING: A 70 1942
 JV0338_MARK LOGO: CGS
 JV0338_PROJECTION: RECESSED 24 CENTIMETERS
 JV0338_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0338+STABILITY: SURFACE MOTION
 JV0338
 JV0338  HISTORY     - Date     Condition        Report By
 JV0338  HISTORY     - 1942     MONUMENTED       CGS
 JV0338  HISTORY     - 1964     GOOD             CGS
 JV0338  HISTORY     - 20060121 MARK NOT FOUND   USPSQD
 JV0338  HISTORY     - 20250416 GOOD             PROFLN
 JV0338
 JV0338                          STATION DESCRIPTION
 JV0338
 JV0338'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0338'AT ROCK HALL.
 JV0338'ABOUT 0.55 MILES NORTH ALONG STATE HIGHWAY 445 FROM ITS
 JV0338'JUNCTION WITH STATE HIGHWAY 20 AT WHITE HALL, IN THE FRONT
 JV0338'YARD OF A HOUSE WITH A PORCH ON THE EAST FRONT AND A CAR PORT
 JV0338'ON THE SOUTH END, IT IS 28.5 FEET EAST OF THE SOUTHEAST CORNER
 JV0338'OF THE HOUSE, 11.0 FEET NORTH OF THE NORTH ONE OF ROW OF 4-LARGE
 JV0338'MAPLE TREES, 21.8 FEET WEST OF CENTER LINE OF THE HIGHWAY AND
 JV0338'51.4 FEET SOUTH OF POWER LINE POLE NO. 29.  A STANDARD DISK IN
 JV0338'TOP OF A CONCRETE POST, 3-INCHES BELOW THE SURFACE OF GROUND.
 JV0338
 JV0338                          STATION RECOVERY (2006)
 JV0338
 JV0338'RECOVERY NOTE BY US POWER SQUADRON 2006 (DU)
 JV0338'MARK NOT FOUND.
 JV0338
 JV0338                          STATION RECOVERY (2025)
 JV0338
 JV0338'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0338'THE MARK WAS RECOVERED IN GOOD CONDITION BURIED 0.8 FT (24 CM) BELOW
 JV0338'GROUND AND A VALVE BOX PLACED OVER IT FOR ACCESS.  THE HOUSE IS AS IN
 JV0338'THE ORIGINAL DESCRIPTION WITH PORCH TO EAST AND CARPORT TO SOUTH, 1
 JV0338'STORY WHITE FRAME, NUMBER 6124.
 JV0338'
 JV0338'THE MARK IS 50.5 FT (15.4 M) SOUTH OF POLE 29, 33.0 FT (10.1 M)
 JV0338'SOUTHEAST OF THE NORTHEAST PORCH CORNER, 28.5 FT (8.7 M) EASTERLY OF
 JV0338'THE SOUTHEAST HOUSE CORNER, 22.0 FT (6.7 M) WEST OF THE HIGHWAY AND
 JV0338'4.5 FT (1.4 M) NORTH OF THE SOUTH LINE EXTENDED OF THE HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1217 ***********************************************************************
 JU1217  DESIGNATION -  A 72
 JU1217  PID         -  JU1217
 JU1217  STATE/COUNTY-  MD/KENT
 JU1217  COUNTRY     -  US
 JU1217  USGS QUAD   -  GALENA (2017)
 JU1217
 JU1217                         *CURRENT SURVEY CONTROL
 JU1217  ______________________________________________________________________
 JU1217* NAD 83(1986) POSITION- 39 17 08.     (N) 075 55 27.     (W)   SCALED
 JU1217* NAVD 88 ORTHO HEIGHT -    16.369 (meters)       53.70  (feet) ADJUSTED
 JU1217  ______________________________________________________________________
 JU1217  GEOID HEIGHT    -        -33.516 (meters)                     GEOID18
 JU1217  DYNAMIC HEIGHT  -         16.360 (meters)       53.67  (feet) COMP
 JU1217  MODELED GRAVITY -    980,111.6   (mgal)                       NAVD 88
 JU1217
 JU1217  VERT ORDER      -  SECOND    CLASS 0
 JU1217
 JU1217.The horizontal coordinates were scaled from a map and have
 JU1217.an estimated accuracy of +/- 6 seconds.
 JU1217
 JU1217.The orthometric height was determined by differential leveling and
 JU1217.adjusted by the NATIONAL GEODETIC SURVEY
 JU1217.in June 1991.
 JU1217
 JU1217.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1217.GEOID18 height accuracy estimate available here.
 JU1217
 JU1217.Click photographs - Photos may exist for this station.
 JU1217
 JU1217.The dynamic height is computed by dividing the NAVD 88
 JU1217.geopotential number by the normal gravity value computed on the
 JU1217.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1217.degrees latitude (g = 980.6199 gals.).
 JU1217
 JU1217.The modeled gravity was interpolated from observed gravity values.
 JU1217
 JU1217;                    North         East    Units  Estimated Accuracy
 JU1217;SPC MD       -   180,250.      492,820.      MT  (+/- 180 meters Scaled)
 JU1217
 JU1217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ202488(NAD 83)
 JU1217
 JU1217                          SUPERSEDED SURVEY CONTROL
 JU1217
 JU1217  NGVD 29 (11/26/84)   16.611  (m)           54.50   (f) ADJUSTED    2 0
 JU1217
 JU1217.Superseded values are not recommended for survey control.
 JU1217
 JU1217.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1217.See file dsdata.pdf to determine how the superseded data were derived.
 JU1217
 JU1217_MARKER: DB = BENCH MARK DISK
 JU1217_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1217_STAMPING: A 72 1942
 JU1217_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1217+STABILITY: SURFACE MOTION
 JU1217
 JU1217  HISTORY     - Date     Condition        Report By
 JU1217  HISTORY     - 1942     MONUMENTED       CGS
 JU1217  HISTORY     - 1964     MARK NOT FOUND   CGS
 JU1217
 JU1217                          STATION DESCRIPTION
 JU1217
 JU1217'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1217'1 MI NW FROM CHESTERVILLE.
 JU1217'1.0 MILE NORTHWEST OF CHESTERVILLE, KENT COUNTY.  THIS BENCH
 JU1217'MARK MAY BE REACHED FROM THE CROSSROADS BY GOING 0.3 MILE WEST
 JU1217'ALONG STATE HIGHWAY 447, THENCE 0.7 MILE NORTHWEST ALONG A
 JU1217'DIRT ROAD LEADING TO LOCUST GROVE.  IT IS 0.3 MILE NORTHWEST OF
 JU1217'A LARGE TWO STORY FARMHOUSE, AT A CURVE IN THE ROAD FROM NORTH
 JU1217'TO NORTH NORTHWEST, 27.8 FEET NORTHEAST OF THE CENTERLINE OF THE
 JU1217'ROAD AT THE MIDDLE OF THE CURVE, ACROSS THE ROAD FROM A WOODEN
 JU1217'GATE OPENING INTO AN OPEN FIELD ON THE WEST SIDE OF THE ROAD,
 JU1217'AND 12 FEET SOUTHWEST OF A NORTHEAST AND SOUTHWEST ROW OF BRUSH
 JU1217'AND TREES DIVIDING TWO CULTIVATED FIELDS.  A STANDARD DISK,
 JU1217'STAMPED A 72 1942 AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 JU1217'4 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6885 ***********************************************************************
 JV6885  DESIGNATION -  A 73 RESET
 JV6885  PID         -  JV6885
 JV6885  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6885  COUNTRY     -  US
 JV6885  USGS QUAD   -  GIBSON ISLAND (2017)
 JV6885
 JV6885                         *CURRENT SURVEY CONTROL
 JV6885  ______________________________________________________________________
 JV6885* NAD 83(1986) POSITION- 39 00 35.     (N) 076 29 20.     (W)   SCALED
 JV6885* NAVD 88 ORTHO HEIGHT -    15.016 (meters)       49.27  (feet) ADJUSTED
 JV6885  ______________________________________________________________________
 JV6885  GEOID HEIGHT    -        -33.297 (meters)                     GEOID18
 JV6885  DYNAMIC HEIGHT  -         15.008 (meters)       49.24  (feet) COMP
 JV6885  MODELED GRAVITY -    980,074.1   (mgal)                       NAVD 88
 JV6885
 JV6885  VERT ORDER      -  SECOND    CLASS I
 JV6885
 JV6885.The horizontal coordinates were scaled from a map and have
 JV6885.an estimated accuracy of +/- 6 seconds.
 JV6885
 JV6885.The orthometric height was determined by differential leveling and
 JV6885.adjusted by the NATIONAL GEODETIC SURVEY
 JV6885.in July 1996.
 JV6885
 JV6885.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6885.GEOID18 height accuracy estimate available here.
 JV6885
 JV6885.Click photographs - Photos may exist for this station.
 JV6885
 JV6885.The dynamic height is computed by dividing the NAVD 88
 JV6885.geopotential number by the normal gravity value computed on the
 JV6885.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6885.degrees latitude (g = 980.6199 gals.).
 JV6885
 JV6885.The modeled gravity was interpolated from observed gravity values.
 JV6885
 JV6885;                    North         East    Units  Estimated Accuracy
 JV6885;SPC MD       -   149,210.      444,270.      MT  (+/- 180 meters Scaled)
 JV6885
 JV6885_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ710189(NAD 83)
 JV6885
 JV6885                          SUPERSEDED SURVEY CONTROL
 JV6885
 JV6885  NGVD 29 (11/18/05)   15.27   (m)           50.1    (f) RESET       3  
 JV6885
 JV6885.Superseded values are not recommended for survey control.
 JV6885
 JV6885.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6885.See file dsdata.pdf to determine how the superseded data were derived.
 JV6885
 JV6885_MARKER: DV = VERTICAL CONTROL DISK
 JV6885_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV6885_SP_SET: DROP INLET
 JV6885_STAMPING: A 73 RESET 1988
 JV6885_MARK LOGO: NGS
 JV6885_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6885_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6885_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6885+SATELLITE: SATELLITE OBSERVATIONS - 1988
 JV6885
 JV6885  HISTORY     - Date     Condition        Report By
 JV6885  HISTORY     - 1988     MONUMENTED       NGS
 JV6885  HISTORY     - 19911210 GOOD             MDSHA
 JV6885  HISTORY     - 20000217 MARK NOT FOUND   USPSQD
 JV6885
 JV6885                          STATION DESCRIPTION
 JV6885
 JV6885'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 JV6885'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 50 AND STATE HIGHWAYS 2
 JV6885'AND 450 NEAR ANNAPOLIS, GO SOUTH ON STATE HIGHWAY 450 FOR 0.4 KM
 JV6885'(0.2 MI) TO THE FIRST CROSSOVER AND THE MARK ON THE LEFT.  IT IS JUST
 JV6885'OPPOSITE THE ENTRANCE TO MANRESA RELIGIOUS AREA, 8.8 M (28.9 FT) EAST
 JV6885'FROM THE CENTER ON THE NORTH BOUND LANE OF STATE HIGHWAY 450, 12.8 M
 JV6885'(42.0 FT) NORTH OF A HIGHWAY SIGN, RIGHT LANE MUST EXIT TO 50 EAST,
 JV6885'19.5 M (64.0 FT) EAST OF THE CENTER OF THE CROSSOVER, 0.5 M (1.6 FT)
 JV6885'EAST OF THE SOUTHEAST CORNER OF THE DROP INLET, 0.5 M (1.6 FT) SOUTH
 JV6885'OF THE CENTER OF THE DROP INLET AND 0.45 M (1.48 FT) EAST OF A
 JV6885'CARSONITE WITNESS POST.
 JV6885
 JV6885                          STATION RECOVERY (1991)
 JV6885
 JV6885'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6885'RECOVERED IN GOOD CONDITION.
 JV6885
 JV6885                          STATION RECOVERY (2000)
 JV6885
 JV6885'RECOVERY NOTE BY US POWER SQUADRON 2000
 JV6885'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1106 ***********************************************************************
 JV1106  DESIGNATION -  A 74
 JV1106  PID         -  JV1106
 JV1106  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1106  COUNTRY     -  US
 JV1106  USGS QUAD   -  ROUND BAY (2016)
 JV1106
 JV1106                         *CURRENT SURVEY CONTROL
 JV1106  ______________________________________________________________________
 JV1106* NAD 83(1986) POSITION- 39 07 05.     (N) 076 30 24.     (W)   SCALED
 JV1106* NAVD 88 ORTHO HEIGHT -    27.939 (meters)       91.66  (feet) ADJUSTED
 JV1106  ______________________________________________________________________
 JV1106  GEOID HEIGHT    -        -33.115 (meters)                     GEOID18
 JV1106  DYNAMIC HEIGHT  -         27.923 (meters)       91.61  (feet) COMP
 JV1106  MODELED GRAVITY -    980,087.0   (mgal)                       NAVD 88
 JV1106
 JV1106  VERT ORDER      -  SECOND    CLASS 0
 JV1106
 JV1106.The horizontal coordinates were scaled from a map and have
 JV1106.an estimated accuracy of +/- 6 seconds.
 JV1106
 JV1106.The orthometric height was determined by differential leveling and
 JV1106.adjusted by the NATIONAL GEODETIC SURVEY
 JV1106.in June 1991.
 JV1106
 JV1106.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1106.GEOID18 height accuracy estimate available here.
 JV1106
 JV1106.Click photographs - Photos may exist for this station.
 JV1106
 JV1106.The dynamic height is computed by dividing the NAVD 88
 JV1106.geopotential number by the normal gravity value computed on the
 JV1106.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1106.degrees latitude (g = 980.6199 gals.).
 JV1106
 JV1106.The modeled gravity was interpolated from observed gravity values.
 JV1106
 JV1106;                    North         East    Units  Estimated Accuracy
 JV1106;SPC MD       -   161,230.      442,660.      MT  (+/- 180 meters Scaled)
 JV1106
 JV1106_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ697309(NAD 83)
 JV1106
 JV1106                          SUPERSEDED SURVEY CONTROL
 JV1106
 JV1106  NGVD 29 (11/26/84)   28.180  (m)           92.45   (f) ADJUSTED    2 0
 JV1106
 JV1106.Superseded values are not recommended for survey control.
 JV1106
 JV1106.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1106.See file dsdata.pdf to determine how the superseded data were derived.
 JV1106
 JV1106_MARKER: DB = BENCH MARK DISK
 JV1106_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1106_STAMPING: A 74 1942
 JV1106_MARK LOGO: CGS
 JV1106_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1106+STABILITY: SURFACE MOTION
 JV1106
 JV1106  HISTORY     - Date     Condition        Report By
 JV1106  HISTORY     - 1942     MONUMENTED       CGS
 JV1106  HISTORY     - 20020219 MARK NOT FOUND   USPSQD
 JV1106
 JV1106                          STATION DESCRIPTION
 JV1106
 JV1106'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1106'1.2 MI E FROM JACOBSVILLE.
 JV1106'ALONG HIGHWAY 177 ABOUT 1.2 MILES EAST OF THE SCHOOL AT JACOBSVILLE,
 JV1106'NORTHEAST AND ACROSS THE HIGHWAY FROM MILEAGE MARKER NUMBER 52,
 JV1106'ABOUT 50 FEET SOUTHEAST OF A DIRT ROAD LEADING NORTHEAST, 42.5
 JV1106'FEET SOUTHEAST OF THE SOUTH CORNER OF A STONE FRUIT STAND,
 JV1106'22.5 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, AT A
 JV1106'PROPERTY LINE FENCE BETWEEN THE FRUIT STAND AND A WHITE HOUSE ON
 JV1106'THE NORTHEAST SIDE OF THE ROAD, AT THE SOUTHWEST END OF THE
 JV1106'FENCE, AND IS A BENCH MARK DISK SET IN THE TOP OF A CONCRETE POST
 JV1106'PROJECTING 4 INCHES.
 JV1106
 JV1106                          STATION RECOVERY (2002)
 JV1106
 JV1106'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV1106'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0054 ***********************************************************************
 HV0054  DESIGNATION -  A 75 RESET
 HV0054  PID         -  HV0054
 HV0054  STATE/COUNTY-  MD/QUEEN ANNES
 HV0054  COUNTRY     -  US
 HV0054  USGS QUAD   -  WYE MILLS (2016)
 HV0054
 HV0054                         *CURRENT SURVEY CONTROL
 HV0054  ______________________________________________________________________
 HV0054* NAD 83(1986) POSITION- 38 56 48.     (N) 076 02 56.     (W)   SCALED
 HV0054* NAVD 88 ORTHO HEIGHT -    12.28  (meters)       40.3   (feet) RESET
 HV0054  ______________________________________________________________________
 HV0054  GEOID HEIGHT    -        -34.245 (meters)                     GEOID18
 HV0054  VERT ORDER      -  THIRD
 HV0054
 HV0054.The horizontal coordinates were scaled from a map and have
 HV0054.an estimated accuracy of +/- 6 seconds.
 HV0054
 HV0054.The orthometric height was computed from unverified reset data.
 HV0054
 HV0054.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0054.GEOID18 height accuracy estimate available here.
 HV0054
 HV0054.Click photographs - Photos may exist for this station.
 HV0054
 HV0054;                    North         East    Units  Estimated Accuracy
 HV0054;SPC MD       -   142,520.      482,450.      MT  (+/- 180 meters Scaled)
 HV0054
 HV0054_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ091113(NAD 83)
 HV0054
 HV0054                          SUPERSEDED SURVEY CONTROL
 HV0054
 HV0054  NGVD 29 (??/??/??)   12.51   (m)           41.0    (f) RESET       3  
 HV0054
 HV0054.Superseded values are not recommended for survey control.
 HV0054
 HV0054.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0054.See file dsdata.pdf to determine how the superseded data were derived.
 HV0054
 HV0054_MARKER: DB = BENCH MARK DISK
 HV0054_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0054_STAMPING: A 75 RESET 1964
 HV0054_MARK LOGO: CGS
 HV0054_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0054+STABILITY: SURFACE MOTION
 HV0054
 HV0054  HISTORY     - Date     Condition        Report By
 HV0054  HISTORY     - 1964     MONUMENTED       MDSRC
 HV0054  HISTORY     - 20050407 MARK NOT FOUND   USPSQD
 HV0054
 HV0054                          STATION DESCRIPTION
 HV0054
 HV0054'DESCRIBED BY MD STATE ROADS COMM 1964
 HV0054'1.8 MI NW FROM WILLOUGHBY.
 HV0054'ABOUT 1.8 MILES NORTHWEST OF THE PENNSYLVANIA STATION AT
 HV0054'WILLOUGHBY, AT A COUNTY ROAD CROSSING, 32.6 FEET WEST OF THE
 HV0054'CENTERLINE OF THE COUNTY ROAD, 19.3 FEET NORTH OF THE CENTERLINE
 HV0054'OF THE RAILROAD, AND 6.5 FEET SOUTHWEST OF THE DRAINAGE DITCH,
 HV0054'TO REACH FROM THE JUNCTION OF U.S. ROUTE 50 AND MD. ROUTE 404,
 HV0054'GO EAST ON STATE ROUTE 404 FOR 0.5 MILES TO COUNTY ROAD LEFT,
 HV0054'THENCE LEFT NORTH ON THE COUNTY ROAD FOR 0.8 MILES TO RAILROAD
 HV0054'CROSSING.  SET IN A CONCRETE POST PROJECTING 3 INCHES.
 HV0054
 HV0054                          STATION RECOVERY (2005)
 HV0054
 HV0054'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 HV0054'DISK NOT FOUND.  REMAINS OF BROKEN MONUMENT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0173 ***********************************************************************
 HV0173  DESIGNATION -  A 76
 HV0173  PID         -  HV0173
 HV0173  STATE/COUNTY-  MD/QUEEN ANNES
 HV0173  COUNTRY     -  US
 HV0173  USGS QUAD   -  KENT ISLAND (2016)
 HV0173
 HV0173                         *CURRENT SURVEY CONTROL
 HV0173  ______________________________________________________________________
 HV0173* NAD 83(1986) POSITION- 38 57 27.     (N) 076 20 26.     (W)   SCALED
 HV0173* NAVD 88 ORTHO HEIGHT -     2.231 (meters)        7.32  (feet) ADJUSTED
 HV0173  ______________________________________________________________________
 HV0173  GEOID HEIGHT    -        -33.604 (meters)                     GEOID18
 HV0173  DYNAMIC HEIGHT  -          2.230 (meters)        7.32  (feet) COMP
 HV0173  MODELED GRAVITY -    980,078.5   (mgal)                       NAVD 88
 HV0173
 HV0173  VERT ORDER      -  SECOND    CLASS 0
 HV0173
 HV0173.The horizontal coordinates were scaled from a map and have
 HV0173.an estimated accuracy of +/- 6 seconds.
 HV0173
 HV0173.The orthometric height was determined by differential leveling and
 HV0173.adjusted by the NATIONAL GEODETIC SURVEY
 HV0173.in June 1991.
 HV0173
 HV0173.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0173.GEOID18 height accuracy estimate available here.
 HV0173
 HV0173.Click photographs - Photos may exist for this station.
 HV0173
 HV0173.The dynamic height is computed by dividing the NAVD 88
 HV0173.geopotential number by the normal gravity value computed on the
 HV0173.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0173.degrees latitude (g = 980.6199 gals.).
 HV0173
 HV0173.The modeled gravity was interpolated from observed gravity values.
 HV0173
 HV0173;                    North         East    Units  Estimated Accuracy
 HV0173;SPC MD       -   143,500.      457,160.      MT  (+/- 180 meters Scaled)
 HV0173
 HV0173_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ838129(NAD 83)
 HV0173
 HV0173                          SUPERSEDED SURVEY CONTROL
 HV0173
 HV0173  NGVD 29 (11/26/84)    2.468  (m)            8.10   (f) ADJUSTED    2 0
 HV0173
 HV0173.Superseded values are not recommended for survey control.
 HV0173
 HV0173.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0173.See file dsdata.pdf to determine how the superseded data were derived.
 HV0173
 HV0173_MARKER: DB = BENCH MARK DISK
 HV0173_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0173_STAMPING: A 76 1942
 HV0173_MARK LOGO: CGS
 HV0173_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0173+STABILITY: SURFACE MOTION
 HV0173
 HV0173  HISTORY     - Date     Condition        Report By
 HV0173  HISTORY     - 1942     MONUMENTED       CGS
 HV0173  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 HV0173
 HV0173                          STATION DESCRIPTION
 HV0173
 HV0173'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0173'2.2 MI SW FROM STEVENSVILLE.
 HV0173'THIS MARK IS ABOUT 2.2 MILES SOUTHWEST FROM THE WYE JUNCTION
 HV0173'OF HIGHWAY 404 AND 18 AT STEVENSVILLE, ON HIGHWAY 404, SET
 HV0173'AT A WYE JUNCTION OF A DIRT ROAD, 47.0 FEET EAST OF THE CENTER LINE
 HV0173'OF THE JUNCTION, 36.8 FEET NORTH OF THE DIRT ROAD, 28.2 FEET
 HV0173'SOUTH OF THE HIGHWAY, SET AT THE END OF A MEADOW, 53.5 FEET
 HV0173'EAST OF POLE NUMBER 43, NEAR A WHITE REFERENCE POST, AND SET IN
 HV0173'THE TOP OF A CONCRETE POST.  A STANDARD DISK.
 HV0173
 HV0173                          STATION RECOVERY (1983)
 HV0173
 HV0173'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0173'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0844 ***********************************************************************
 HU0844  DESIGNATION -  A 77
 HU0844  PID         -  HU0844
 HU0844  STATE/COUNTY-  MD/CAROLINE
 HU0844  COUNTRY     -  US
 HU0844  USGS QUAD   -  HOBBS (2017)
 HU0844
 HU0844                         *CURRENT SURVEY CONTROL
 HU0844  ______________________________________________________________________
 HU0844* NAD 83(1986) POSITION- 38 52 12.     (N) 075 47 17.     (W)   SCALED
 HU0844* NAVD 88 ORTHO HEIGHT -    11.448 (meters)       37.56  (feet) ADJUSTED
 HU0844  ______________________________________________________________________
 HU0844  GEOID HEIGHT    -        -34.957 (meters)                     GEOID18
 HU0844  DYNAMIC HEIGHT  -         11.442 (meters)       37.54  (feet) COMP
 HU0844  MODELED GRAVITY -    980,038.0   (mgal)                       NAVD 88
 HU0844
 HU0844  VERT ORDER      -  SECOND    CLASS 0
 HU0844
 HU0844.The horizontal coordinates were scaled from a map and have
 HU0844.an estimated accuracy of +/- 6 seconds.
 HU0844
 HU0844.The orthometric height was determined by differential leveling and
 HU0844.adjusted by the NATIONAL GEODETIC SURVEY
 HU0844.in June 1991.
 HU0844
 HU0844.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0844.GEOID18 height accuracy estimate available here.
 HU0844
 HU0844.Click photographs - Photos may exist for this station.
 HU0844
 HU0844.The dynamic height is computed by dividing the NAVD 88
 HU0844.geopotential number by the normal gravity value computed on the
 HU0844.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0844.degrees latitude (g = 980.6199 gals.).
 HU0844
 HU0844.The modeled gravity was interpolated from observed gravity values.
 HU0844
 HU0844;                    North         East    Units  Estimated Accuracy
 HU0844;SPC MD       -   134,270.      505,170.      MT  (+/- 180 meters Scaled)
 HU0844
 HU0844_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ316026(NAD 83)
 HU0844
 HU0844                          SUPERSEDED SURVEY CONTROL
 HU0844
 HU0844  NGVD 29 (11/26/84)   11.689  (m)           38.35   (f) ADJUSTED    2 0
 HU0844
 HU0844.Superseded values are not recommended for survey control.
 HU0844
 HU0844.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0844.See file dsdata.pdf to determine how the superseded data were derived.
 HU0844
 HU0844_MARKER: DB = BENCH MARK DISK
 HU0844_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0844_SP_SET: CULVERT
 HU0844_STAMPING: A 77 1942
 HU0844_MARK LOGO: CGS
 HU0844_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0844
 HU0844  HISTORY     - Date     Condition        Report By
 HU0844  HISTORY     - 1942     MONUMENTED       CGS
 HU0844  HISTORY     - 1964     GOOD             CGS
 HU0844  HISTORY     - 19910103 MARK NOT FOUND   NGS
 HU0844
 HU0844                          STATION DESCRIPTION
 HU0844
 HU0844'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0844'0.8 MI NE FROM HOBBS.
 HU0844'0.8 MILE NORTHEAST ALONG ROAD NO. 474 FROM THE Y-JUNCTION OF A
 HU0844'DIRT ROAD AT HOBBS, CAROLINE COUNTY, DIRECTLY EAST AND IN FRONT
 HU0844'OF A TWO-STORY YELLOW HOUSE, 23.8 FEET NORTH OF POLE 408, AT AN
 HU0844'18-INCH CORRUGATED IRON PIPE CULVERT, IN THE SOUTH END OF THE EAST
 HU0844'HEADWALL, AND 29 FEET EAST OF THE CENTERLINE OF THE MACADAM ROAD.
 HU0844'A STANDARD DISK, STAMPED A 77 1942.
 HU0844
 HU0844                          STATION RECOVERY (1964)
 HU0844
 HU0844'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HU0844'RECOVERED IN GOOD CONDITION.
 HU0844
 HU0844                          STATION RECOVERY (1991)
 HU0844
 HU0844'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU0844'THERE IS A NEW HEADWALL AT THE DESCRIBED LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0837 ***********************************************************************
 HU0837  DESIGNATION -  A 78
 HU0837  PID         -  HU0837
 HU0837  STATE/COUNTY-  MD/CAROLINE
 HU0837  COUNTRY     -  US
 HU0837  USGS QUAD   -  BURRSVILLE (2016)
 HU0837
 HU0837                         *CURRENT SURVEY CONTROL
 HU0837  ______________________________________________________________________
 HU0837* NAD 83(1986) POSITION- 38 56 42.     (N) 075 44 46.     (W)   SCALED
 HU0837* NAVD 88 ORTHO HEIGHT -    18.173 (meters)       59.62  (feet) ADJUSTED
 HU0837  ______________________________________________________________________
 HU0837  GEOID HEIGHT    -        -34.817 (meters)                     GEOID18
 HU0837  DYNAMIC HEIGHT  -         18.163 (meters)       59.59  (feet) COMP
 HU0837  MODELED GRAVITY -    980,048.6   (mgal)                       NAVD 88
 HU0837
 HU0837  VERT ORDER      -  SECOND    CLASS 0
 HU0837
 HU0837.The horizontal coordinates were scaled from a map and have
 HU0837.an estimated accuracy of +/- 6 seconds.
 HU0837
 HU0837.The orthometric height was determined by differential leveling and
 HU0837.adjusted by the NATIONAL GEODETIC SURVEY
 HU0837.in June 1991.
 HU0837
 HU0837.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0837.GEOID18 height accuracy estimate available here.
 HU0837
 HU0837.Click photographs - Photos may exist for this station.
 HU0837
 HU0837.The dynamic height is computed by dividing the NAVD 88
 HU0837.geopotential number by the normal gravity value computed on the
 HU0837.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0837.degrees latitude (g = 980.6199 gals.).
 HU0837
 HU0837.The modeled gravity was interpolated from observed gravity values.
 HU0837
 HU0837;                    North         East    Units  Estimated Accuracy
 HU0837;SPC MD       -   142,650.      508,700.      MT  (+/- 180 meters Scaled)
 HU0837
 HU0837_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ353109(NAD 83)
 HU0837
 HU0837                          SUPERSEDED SURVEY CONTROL
 HU0837
 HU0837  NGVD 29 (11/26/84)   18.414  (m)           60.41   (f) ADJUSTED    2 0
 HU0837
 HU0837.Superseded values are not recommended for survey control.
 HU0837
 HU0837.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0837.See file dsdata.pdf to determine how the superseded data were derived.
 HU0837
 HU0837_MARKER: DB = BENCH MARK DISK
 HU0837_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0837_STAMPING: A 78 1942
 HU0837_MARK LOGO: CGS
 HU0837_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0837+STABILITY: SURFACE MOTION
 HU0837
 HU0837  HISTORY     - Date     Condition        Report By
 HU0837  HISTORY     - 1942     MONUMENTED       CGS
 HU0837
 HU0837                          STATION DESCRIPTION
 HU0837
 HU0837'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0837'1.1 MI SW FROM WHITELEYSBURG.
 HU0837'THIS MARK IS ABOUT 1.1 MILES SOUTHWEST ALONG A DIRT ROAD FROM THE
 HU0837'SEVENTH DAY ADVENTIST CHURCH AT WHITELEYSBURG, CAROLINE COUNTY,
 HU0837'16.6 FEET SOUTHEAST OF THE CENTER LINE OF DIRT ROAD, AT A T
 HU0837'ROAD JUNCTION, 31.5 FEET SOUTH OF THE CENTER LINE OF THE JUNCTION,
 HU0837'29.7 FEET SOUTHWEST OF THE CENTER LINE OF DIRT ROAD WHICH RUNS
 HU0837'SOUTH FROM THE MAIN ROAD, SET IN THE NORTH CORNER OF A CULTIVATED
 HU0837'FIELD, 2.0 FEET NORTHEAST OF A STANDARD REFERENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0838 ***********************************************************************
 HU0838  DESIGNATION -  A 78 RESET
 HU0838  PID         -  HU0838
 HU0838  STATE/COUNTY-  MD/CAROLINE
 HU0838  COUNTRY     -  US
 HU0838  USGS QUAD   -  BURRSVILLE (2016)
 HU0838
 HU0838                         *CURRENT SURVEY CONTROL
 HU0838  ______________________________________________________________________
 HU0838* NAD 83(1986) POSITION- 38 56 42.2    (N) 075 44 45.5    (W)   HD_HELD2
 HU0838* NAVD 88 ORTHO HEIGHT -    17.967 (meters)       58.95  (feet) ADJUSTED
 HU0838  ______________________________________________________________________
 HU0838  GEOID HEIGHT    -        -34.817 (meters)                     GEOID18
 HU0838  DYNAMIC HEIGHT  -         17.957 (meters)       58.91  (feet) COMP
 HU0838  MODELED GRAVITY -    980,048.6   (mgal)                       NAVD 88
 HU0838
 HU0838  VERT ORDER      -  SECOND    CLASS I
 HU0838
 HU0838.The horizontal coordinates were established by autonomous hand held GPS
 HU0838.observations and have an estimated accuracy of +/- 10 meters.
 HU0838
 HU0838.The orthometric height was determined by differential leveling and
 HU0838.adjusted by the NATIONAL GEODETIC SURVEY
 HU0838.in December 2004.
 HU0838
 HU0838.No vertical observational check was made to the station.
 HU0838
 HU0838.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0838.GEOID18 height accuracy estimate available here.
 HU0838
 HU0838.Click photographs - Photos may exist for this station.
 HU0838
 HU0838.The dynamic height is computed by dividing the NAVD 88
 HU0838.geopotential number by the normal gravity value computed on the
 HU0838.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0838.degrees latitude (g = 980.6199 gals.).
 HU0838
 HU0838.The modeled gravity was interpolated from observed gravity values.
 HU0838
 HU0838;                    North         East    Units  Estimated Accuracy
 HU0838;SPC MD       -   142,654.      508,707.      MT  (+/- 10 meters HH2 GPS)
 HU0838
 HU0838_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3535410943(NAD 83)
 HU0838
 HU0838                          SUPERSEDED SURVEY CONTROL
 HU0838
 HU0838  NGVD 29 (??/??/??)   18.22   (m)           59.8    (f) RESET       3  
 HU0838
 HU0838.Superseded values are not recommended for survey control.
 HU0838
 HU0838.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0838.See file dsdata.pdf to determine how the superseded data were derived.
 HU0838
 HU0838_MARKER: DB = BENCH MARK DISK
 HU0838_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0838_STAMPING: A 78 RESET 1964
 HU0838_MARK LOGO: CGS
 HU0838_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0838_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0838+STABILITY: SURFACE MOTION
 HU0838_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0838+SATELLITE: SATELLITE OBSERVATIONS - October 29, 2002
 HU0838
 HU0838  HISTORY     - Date     Condition        Report By
 HU0838  HISTORY     - 1964     MONUMENTED       CGS
 HU0838  HISTORY     - 20021029 GOOD             MDSHA
 HU0838
 HU0838                          STATION DESCRIPTION
 HU0838
 HU0838'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 HU0838'1.1 MI SW FROM WHITELEYSBURG.
 HU0838'ABOUT 1.1 MILES SOUTHWEST ALONG WHITES LANE FROM THE INTERSECTION
 HU0838'IN WHITELEYSBURG, CAROLINE COUNTY, 45 FEET WEST OF THE JUNCTION
 HU0838'OF WHITES LANE AND A DIRT ROAD LEADING SOUTH, 23 FEET NORTHWEST OF
 HU0838'THE CENTERLINE OF WHITES LANE, 3.5 NORTHEAST OF TELEPHONE POLE
 HU0838'NUMBER 29, 1.5 FEET SOUTH OF STEEL WITNESS POST AND 1 FOOT
 HU0838'SOUTHEAST OF WIRE FENCE, SET FLUSH IN A CONCRETE MONUMENT WHICH
 HU0838'IS 10 INCHES IN DIAMETER, PROJECTING 1 INCH.
 HU0838
 HU0838                          STATION RECOVERY (2002)
 HU0838
 HU0838'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0838'THE STATION IS LOCATED ABOUT 1.1 MI (1.77 KM) SOUTHEAST ALONG WHITES
 HU0838'ROAD FROM THE INTERSECTION OF WHITELEYSBURG ROAD, IN WHITELEYSBURG.
 HU0838'THE STATION IS A BENCH MARK DISK SET IN THE TOP OF A 10 INCH (25 CM)
 HU0838'ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS 45 FT
 HU0838'(13.7 M) WEST OF THE JUNCTION OF WHITES ROAD AND A DIRT ROAD ROAD
 HU0838'LEADING SOUTHEAST, 22 FT (6.7 M) NORTHWEST OF THE CENTER OF WHITES
 HU0838'ROAD, 4.5 FT (1.4 M) NORTHEAST OF UNDERGROUND CABLE MARKER 29.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1215 ***********************************************************************
 HU1215  DESIGNATION -  A 78 RESET
 HU1215  PID         -  HU1215
 HU1215  STATE/COUNTY-  MD/CAROLINE
 HU1215  COUNTRY     -  US
 HU1215  USGS QUAD   -  BURRSVILLE (2016)
 HU1215
 HU1215                         *CURRENT SURVEY CONTROL
 HU1215  ______________________________________________________________________
 HU1215* NAD 83(1986) POSITION- 38 56 42.     (N) 075 44 46.     (W)   SCALED
 HU1215* NAVD 88 ORTHO HEIGHT -    18.65  (meters)       61.2   (feet) RESET
 HU1215  ______________________________________________________________________
 HU1215  GEOID HEIGHT    -        -34.817 (meters)                     GEOID18
 HU1215  VERT ORDER      -  THIRD
 HU1215
 HU1215.The horizontal coordinates were scaled from a map and have
 HU1215.an estimated accuracy of +/- 6 seconds.
 HU1215
 HU1215.The orthometric height was computed from unverified reset data.
 HU1215
 HU1215.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1215.GEOID18 height accuracy estimate available here.
 HU1215
 HU1215.Click photographs - Photos may exist for this station.
 HU1215
 HU1215;                    North         East    Units  Estimated Accuracy
 HU1215;SPC MD       -   142,650.      508,700.      MT  (+/- 180 meters Scaled)
 HU1215
 HU1215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ353109(NAD 83)
 HU1215
 HU1215                          SUPERSEDED SURVEY CONTROL
 HU1215
 HU1215  NGVD 29 (??/??/??)   18.89   (m)           62.0    (f) RESET       3  
 HU1215
 HU1215.Superseded values are not recommended for survey control.
 HU1215
 HU1215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1215.See file dsdata.pdf to determine how the superseded data were derived.
 HU1215
 HU1215_MARKER: DB = BENCH MARK DISK
 HU1215_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1215_STAMPING: A 78 RESET 1959
 HU1215_MARK LOGO: CGS
 HU1215_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1215+STABILITY: SURFACE MOTION
 HU1215
 HU1215  HISTORY     - Date     Condition        Report By
 HU1215  HISTORY     - 1959     MONUMENTED       LOCSUR
 HU1215
 HU1215                          STATION DESCRIPTION
 HU1215
 HU1215'DESCRIBED BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1959
 HU1215'1.1 MI SW FROM WHITELEYSBURG.
 HU1215'THIS MARK IS ABOUT 1.1 MILES SOUTHWEST ALONG A DIRT ROAD FROM THE
 HU1215'SEVENTH DAY ADVENTIST CHURCH AT WHITELEYSBURG, CAROLINE COUNTY,
 HU1215'AT A T-ROAD JUNCTION, 29.5 FEET NORTHWEST OF THE CENTER OF THE
 HU1215'JUNCTION, 14.0 FEET NORTHEAST OF THE EXTENDED CENTERLINE OF THE DIRT
 HU1215'ROAD LEADING SOUTH FROM THE MAIN ROAD, 26.5 FEET NORTHWEST OF THE
 HU1215'CENTERLINE OF THE MAIN ROAD, ALONG THE EDGE OF A CULTIVATED FIELD,
 HU1215'AND 2 FEET SOUTHWEST OF A MILL STONE, AND SET IN THE TOP OF A CONCRETE
 HU1215'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1171 ***********************************************************************
 JV1171  DESIGNATION -  A 79
 JV1171  PID         -  JV1171
 JV1171  STATE/COUNTY-  MD/BALTIMORE
 JV1171  COUNTRY     -  US
 JV1171  USGS QUAD   -  TOWSON (2016)
 JV1171
 JV1171                         *CURRENT SURVEY CONTROL
 JV1171  ______________________________________________________________________
 JV1171* NAD 83(1986) POSITION- 39 24 38.     (N) 076 32 57.     (W)   SCALED
 JV1171* NAVD 88 ORTHO HEIGHT -    85.603 (meters)      280.85  (feet) ADJUSTED
 JV1171  ______________________________________________________________________
 JV1171  GEOID HEIGHT    -        -32.684 (meters)                     GEOID18
 JV1171  DYNAMIC HEIGHT  -         85.557 (meters)      280.70  (feet) COMP
 JV1171  MODELED GRAVITY -    980,088.9   (mgal)                       NAVD 88
 JV1171
 JV1171  VERT ORDER      -  SECOND    CLASS II
 JV1171
 JV1171.The horizontal coordinates were scaled from a map and have
 JV1171.an estimated accuracy of +/- 6 seconds.
 JV1171
 JV1171.The orthometric height was determined by differential leveling and
 JV1171.adjusted by the NATIONAL GEODETIC SURVEY
 JV1171.in June 1991.
 JV1171
 JV1171.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1171.GEOID18 height accuracy estimate available here.
 JV1171
 JV1171.Click photographs - Photos may exist for this station.
 JV1171
 JV1171.The dynamic height is computed by dividing the NAVD 88
 JV1171.geopotential number by the normal gravity value computed on the
 JV1171.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1171.degrees latitude (g = 980.6199 gals.).
 JV1171
 JV1171.The modeled gravity was interpolated from observed gravity values.
 JV1171
 JV1171;                    North         East    Units  Estimated Accuracy
 JV1171;SPC MD       -   193,680.      438,830.      MT  (+/- 180 meters Scaled)
 JV1171
 JV1171_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ666634(NAD 83)
 JV1171
 JV1171                          SUPERSEDED SURVEY CONTROL
 JV1171
 JV1171  NGVD 29 (11/26/84)   85.835  (m)          281.61   (f) ADJUSTED    2 2
 JV1171
 JV1171.Superseded values are not recommended for survey control.
 JV1171
 JV1171.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1171.See file dsdata.pdf to determine how the superseded data were derived.
 JV1171
 JV1171_MARKER: DB = BENCH MARK DISK
 JV1171_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1171_SP_SET: CULVERT HEADWALL
 JV1171_STAMPING: A 79 1942 281.610
 JV1171_MARK LOGO: CGS
 JV1171_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1171_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1171+STABILITY: SURFACE MOTION
 JV1171
 JV1171  HISTORY     - Date     Condition        Report By
 JV1171  HISTORY     - 1942     MONUMENTED       CGS
 JV1171  HISTORY     - 1959     GOOD             CGS
 JV1171  HISTORY     - 19950131 GOOD             MCCRON
 JV1171  HISTORY     - 19950620 GOOD             USPSQD
 JV1171  HISTORY     - 19950621 GOOD             USPSQD
 JV1171  HISTORY     - 19960201 GOOD             MCCRON
 JV1171  HISTORY     - 20010331 GOOD             NGS
 JV1171  HISTORY     - 20020406 MARK NOT FOUND   USPSQD
 JV1171
 JV1171                          STATION DESCRIPTION
 JV1171
 JV1171'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1171'1 MI SW FROM LOCH RAVEN.
 JV1171'1.0 MILE SOUTHWEST ALONG STATE HIGHWAY 547 (BROMWELL BRIDGE
 JV1171'ROAD) FROM THE GENERAL STORE AND TAVERN AT LOCH RAVEN, ON THE
 JV1171'TOP OF THE SOUTHWEST END OF THE SOUTHEAST CONCRETE HEADWALL OF A
 JV1171'6-BY-6-FOOT CONCRETE BOX CULVERT UNDER THE HIGHWAY, 12 1/2 FEET
 JV1171'SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY AND ABOUT LEVEL WITH
 JV1171'THE HIGHWAY.
 JV1171
 JV1171                          STATION RECOVERY (1995)
 JV1171
 JV1171'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV1171'RECOVERED AS DESCRIBED.
 JV1171
 JV1171                          STATION RECOVERY (1995)
 JV1171
 JV1171'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1171'RECOVERED IN GOOD CONDITION.
 JV1171
 JV1171                          STATION RECOVERY (1995)
 JV1171
 JV1171'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1171'RECOVERED IN GOOD CONDITION.
 JV1171
 JV1171                          STATION RECOVERY (1996)
 JV1171
 JV1171'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 JV1171'RECOVERED AS DESCRIBED.
 JV1171
 JV1171                          STATION RECOVERY (2001)
 JV1171
 JV1171'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV1171'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV1171
 JV1171                          STATION RECOVERY (2002)
 JV1171
 JV1171'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 JV1171'NEW CULVERT CONSTRUCTED - NO EVIDENCE OF OLD CULVERT OR MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0549 ***********************************************************************
 HU0549  DESIGNATION -  A 8
 HU0549  PID         -  HU0549
 HU0549  STATE/COUNTY-  MD/WICOMICO
 HU0549  COUNTRY     -  US
 HU0549  USGS QUAD   -  EDEN (2016)
 HU0549
 HU0549                         *CURRENT SURVEY CONTROL
 HU0549  ______________________________________________________________________
 HU0549* NAD 83(1986) POSITION- 38 19 51.4    (N) 075 44 43.2    (W)   HD_HELD2
 HU0549* NAVD 88 ORTHO HEIGHT -     4.412 (meters)       14.48  (feet) ADJUSTED
 HU0549  ______________________________________________________________________
 HU0549  GEOID HEIGHT    -        -35.775 (meters)                     GEOID18
 HU0549  DYNAMIC HEIGHT  -          4.409 (meters)       14.47  (feet) COMP
 HU0549  MODELED GRAVITY -    980,001.3   (mgal)                       NAVD 88
 HU0549
 HU0549  VERT ORDER      -  FIRST     CLASS I
 HU0549
 HU0549.The horizontal coordinates were established by autonomous hand held GPS
 HU0549.observations and have an estimated accuracy of +/- 10 meters.
 HU0549
 HU0549.The orthometric height was determined by differential leveling and
 HU0549.adjusted by the NATIONAL GEODETIC SURVEY
 HU0549.in June 1991.
 HU0549
 HU0549.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0549.GEOID18 height accuracy estimate available here.
 HU0549
 HU0549.Click photographs - Photos may exist for this station.
 HU0549
 HU0549.The dynamic height is computed by dividing the NAVD 88
 HU0549.geopotential number by the normal gravity value computed on the
 HU0549.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0549.degrees latitude (g = 980.6199 gals.).
 HU0549
 HU0549.The modeled gravity was interpolated from observed gravity values.
 HU0549
 HU0549;                    North         East    Units  Estimated Accuracy
 HU0549;SPC MD       -    74,492.      509,699.      MT  (+/- 10 meters HH2 GPS)
 HU0549
 HU0549_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3485642797(NAD 83)
 HU0549
 HU0549                          SUPERSEDED SURVEY CONTROL
 HU0549
 HU0549  NGVD 29 (06/12/91)    4.666  (m)           15.31   (f) ADJUSTED    1 1
 HU0549  NGVD 29 (??/??/87)    4.666  (m)           15.31   (f) SUPERSEDED  1 1
 HU0549
 HU0549.Superseded values are not recommended for survey control.
 HU0549
 HU0549.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0549.See file dsdata.pdf to determine how the superseded data were derived.
 HU0549
 HU0549_MARKER: DB = BENCH MARK DISK
 HU0549_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0549_STAMPING: A 8 1935
 HU0549_MARK LOGO: CGS
 HU0549_PROJECTION: FLUSH
 HU0549_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0549+STABILITY: SURFACE MOTION
 HU0549_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0549+SATELLITE: SATELLITE OBSERVATIONS - April 25, 2019
 HU0549
 HU0549  HISTORY     - Date     Condition        Report By
 HU0549  HISTORY     - 1935     MONUMENTED       CGS
 HU0549  HISTORY     - 1963     GOOD             CGS
 HU0549  HISTORY     - 19900312 GOOD             NGS
 HU0549  HISTORY     - 20190425 GOOD             PROFLN
 HU0549
 HU0549                          STATION DESCRIPTION
 HU0549
 HU0549'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0549'5.6 MI NE FROM WHITEHAVEN.
 HU0549'5.6 MILES NORTHEAST ALONG STATE HIGHWAY 352 FROM THE FERRY LANDING
 HU0549'AT WHITEHAVEN, AT THE NORTH MOST ONE OF FIVE TWO-STORY FRAME
 HU0549'HOUSES (ALL HOUSES ALIKE), 24 FEET NORTHWEST OF CENTER LINE OF
 HU0549'HIGHWAY, 18 FEET SOUTH-SOUTHEAST OF SOUTH CORNER OF THE HOUSE,
 HU0549'6 1/2 FEET NORTHEAST OF TELEPHONE POLE 59, ABOUT LEVEL WITH
 HU0549'HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES.
 HU0549
 HU0549                          STATION RECOVERY (1990)
 HU0549
 HU0549'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0549'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE JUNCTION
 HU0549'OF CHERRY WALK ROAD IN QUANTICO, THENCE 1.7 KM (1.06 MI) SOUTHERLY
 HU0549'ALONG NEBO ROAD, THENCE 1.5 KM (0.93 MI) SOUTHWESTERLY ALONG STATE
 HU0549'HIGHWAY 352, 7.7 M (25.26 FT) NORTHWEST OF THE CENTER OF THE HIGHWAY,
 HU0549'5.5 M (18.04 FT) SOUTH-SOUTHEAST OF THE SOUTH CORNER OF THE MOST
 HU0549'NORTHEASTERLY 1 OF 5 HOUSES, 1.4 M (4.59 FT) NORTHEAST OF TELEPHONE
 HU0549'PEDESTAL NUMBER 59, 0.3 M (0.98 FT) SOUTHEAST OF A WITNESS POST,
 HU0549'LEVEL WITH THE HIGHWAY, AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH
 HU0549'THE GROUND SURFACE.
 HU0549
 HU0549                          STATION RECOVERY (2019)
 HU0549
 HU0549'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU0549'THE MARK IS ABOUT 120 FT (36.6 M) SOUTHWEST OF A POINT OPPOSITE A
 HU0549'FIELD ROAD LEADING SOUTHEAST, 40 FT (12.2 M) NORTHEAST OF A POINT
 HU0549'OPPOSITE POWER POLE 42660-91907, 1 FT (0.3 M) TOWARD THE ROAD OR
 HU0549'SOUTHEAST OF A LOW WITNESS POST AND 1 FT (0.3 M) OR MORE LOWER THAN
 HU0549'THE ROAD.  THE 5 HOUSES MENTIONED IN 1990 WERE NOT SEEN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0222 ***********************************************************************
 JV0222  DESIGNATION -  A 80
 JV0222  PID         -  JV0222
 JV0222  STATE/COUNTY-  MD/BALTIMORE
 JV0222  COUNTRY     -  US
 JV0222  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0222
 JV0222                         *CURRENT SURVEY CONTROL
 JV0222  ______________________________________________________________________
 JV0222* NAD 83(1986) POSITION- 39 30 36.     (N) 076 28 53.     (W)   SCALED
 JV0222* NAVD 88 ORTHO HEIGHT -   152.222 (meters)      499.42  (feet) ADJUSTED
 JV0222  ______________________________________________________________________
 JV0222  GEOID HEIGHT    -        -32.620 (meters)                     GEOID18
 JV0222  DYNAMIC HEIGHT  -        152.143 (meters)      499.16  (feet) COMP
 JV0222  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 JV0222
 JV0222  VERT ORDER      -  SECOND    CLASS 0
 JV0222
 JV0222.The horizontal coordinates were scaled from a map and have
 JV0222.an estimated accuracy of +/- 6 seconds.
 JV0222
 JV0222.The orthometric height was determined by differential leveling and
 JV0222.adjusted by the NATIONAL GEODETIC SURVEY
 JV0222.in June 1991.
 JV0222
 JV0222.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0222.GEOID18 height accuracy estimate available here.
 JV0222
 JV0222.Click photographs - Photos may exist for this station.
 JV0222
 JV0222.The dynamic height is computed by dividing the NAVD 88
 JV0222.geopotential number by the normal gravity value computed on the
 JV0222.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0222.degrees latitude (g = 980.6199 gals.).
 JV0222
 JV0222.The modeled gravity was interpolated from observed gravity values.
 JV0222
 JV0222;                    North         East    Units  Estimated Accuracy
 JV0222;SPC MD       -   204,750.      444,600.      MT  (+/- 180 meters Scaled)
 JV0222
 JV0222_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ726744(NAD 83)
 JV0222
 JV0222                          SUPERSEDED SURVEY CONTROL
 JV0222
 JV0222  NGVD 29 (11/26/84)  152.466  (m)          500.22   (f) ADJUSTED    2 0
 JV0222
 JV0222.Superseded values are not recommended for survey control.
 JV0222
 JV0222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0222.See file dsdata.pdf to determine how the superseded data were derived.
 JV0222
 JV0222_MARKER: DB = BENCH MARK DISK
 JV0222_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0222_STAMPING: A 80 1942
 JV0222_MARK LOGO: CGS
 JV0222_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0222+STABILITY: SURFACE MOTION
 JV0222
 JV0222  HISTORY     - Date     Condition        Report By
 JV0222  HISTORY     - 1942     MONUMENTED       CGS
 JV0222  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV0222  HISTORY     - 19951018 MARK NOT FOUND   USPSQD
 JV0222
 JV0222                          STATION DESCRIPTION
 JV0222
 JV0222'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0222'1.2 MI N FROM BALDWIN.
 JV0222'ABOUT 1.25 MILES NORTH ALONG MACADAM ROAD FROM THE INTERSECTION
 JV0222'AT BALDWIN, BALTIMORE COUNTY, 23.5 FEET SOUTHWEST OF THE CENTER
 JV0222'LINE OF HIGHWAY 165, 43.0 FEET SOUTH OF THE CENTER LINE OF A
 JV0222'DIRT ROAD WHICH RUNS WEST FROM THE MAIN ROAD, 209.5 FEET SOUTH
 JV0222'AND ACROSS HIGHWAY FROM HIGHWAY MARKER NUMBER 10, 2.5 FEET
 JV0222'NORTH OF A STANDARD REFERENCE POST, STAMPED A 80 1942.
 JV0222
 JV0222                          STATION RECOVERY (1995)
 JV0222
 JV0222'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0222'MARK NOT FOUND.
 JV0222
 JV0222                          STATION RECOVERY (1995)
 JV0222
 JV0222'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0222'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1959 ***********************************************************************
 JV1959  DESIGNATION -  A 82
 JV1959  PID         -  JV1959
 JV1959  STATE/COUNTY-  MD/FREDERICK
 JV1959  COUNTRY     -  US
 JV1959  USGS QUAD   -  EMMITSBURG (2016)
 JV1959
 JV1959                         *CURRENT SURVEY CONTROL
 JV1959  ______________________________________________________________________
 JV1959* NAD 83(1986) POSITION- 39 41 12.69   (N) 077 15 45.47   (W)   HD_HELD1
 JV1959* NAVD 88 ORTHO HEIGHT -   130.811 (meters)      429.17  (feet) ADJUSTED
 JV1959  ______________________________________________________________________
 JV1959  GEOID HEIGHT    -        -33.222 (meters)                     GEOID18
 JV1959  DYNAMIC HEIGHT  -        130.740 (meters)      428.94  (feet) COMP
 JV1959  MODELED GRAVITY -    980,088.2   (mgal)                       NAVD 88
 JV1959
 JV1959  VERT ORDER      -  SECOND    CLASS 0
 JV1959
 JV1959.The horizontal coordinates were determined by differentially corrected
 JV1959.hand held GPS observations or other comparable positioning techniques
 JV1959.and have an estimated accuracy of +/- 3 meters.
 JV1959
 JV1959.The orthometric height was determined by differential leveling and
 JV1959.adjusted by the NATIONAL GEODETIC SURVEY
 JV1959.in June 1991.
 JV1959
 JV1959.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1959.GEOID18 height accuracy estimate available here.
 JV1959
 JV1959.Click photographs - Photos may exist for this station.
 JV1959
 JV1959.The dynamic height is computed by dividing the NAVD 88
 JV1959.geopotential number by the normal gravity value computed on the
 JV1959.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1959.degrees latitude (g = 980.6199 gals.).
 JV1959
 JV1959.The modeled gravity was interpolated from observed gravity values.
 JV1959
 JV1959;                    North         East    Units  Estimated Accuracy
 JV1959;SPC MD       -   224,294.2     377,469.8     MT  (+/- 3 meters HH1 GPS) 
 JV1959
 JV1959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0597395449(NAD 83)
 JV1959
 JV1959                          SUPERSEDED SURVEY CONTROL
 JV1959
 JV1959  NGVD 29 (11/26/84)  131.007  (m)          429.81   (f) ADJUSTED    2 0
 JV1959
 JV1959.Superseded values are not recommended for survey control.
 JV1959
 JV1959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1959.See file dsdata.pdf to determine how the superseded data were derived.
 JV1959
 JV1959_MARKER: DB = BENCH MARK DISK
 JV1959_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1959_SP_SET: CULVERT HEADWALL
 JV1959_STAMPING: A 82 1942
 JV1959_MARK LOGO: CGS
 JV1959_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV1959_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1959+STABILITY: SURFACE MOTION
 JV1959_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1959+SATELLITE: SATELLITE OBSERVATIONS - April 04, 1993
 JV1959
 JV1959  HISTORY     - Date     Condition        Report By
 JV1959  HISTORY     - 1942     MONUMENTED       CGS
 JV1959  HISTORY     - 1990     GOOD             USPSQD
 JV1959  HISTORY     - 19930404 GOOD             GREOMA
 JV1959  HISTORY     - 20100324 GOOD             NGS
 JV1959  HISTORY     - 20230315 GOOD             PROFLN
 JV1959
 JV1959                          STATION DESCRIPTION
 JV1959
 JV1959'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1959'3.6 MI SE FROM EMMITSBURG.
 JV1959'3.6 MILES SOUTHEAST ALONG STATE HIGHWAY 32 FROM THE POST
 JV1959'OFFICE AT EMMITSBURG, FREDERICK COUNTY, 19 FEET WEST OF A
 JV1959'POWER-TRANSMISSION LINE POLE, 10.2 FEET SOUTHWEST OF A
 JV1959'NORTHWEST-AND-SOUTHEAST FENCE, AT A CULVERT, IN THE TOP OF THE
 JV1959'NORTHEAST HEAD WALL, AND 20.5 FEET NORTHEAST OF THE CENTER
 JV1959'LINE OF THE HIGHWAY.  A STANDARD DISK, STAMPED A 82 1942.
 JV1959
 JV1959                          STATION RECOVERY (1990)
 JV1959
 JV1959'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1959'RECOVERED IN GOOD CONDITION.
 JV1959
 JV1959                          STATION RECOVERY (1993)
 JV1959
 JV1959'RECOVERY NOTE BY GREENHORNE-OMARA 1993
 JV1959'RECOVERED IN GOOD CONDITION.
 JV1959
 JV1959                          STATION RECOVERY (2010)
 JV1959
 JV1959'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV1959'RECOVERED IN GOOD CONDITION.
 JV1959
 JV1959                          STATION RECOVERY (2023)
 JV1959
 JV1959'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2023 (JRO)
 JV1959'THE MARK IS ABOUT 75 FT (22.9 M) SOUTHEAST OF THE SOUTHEAST LINE
 JV1959'EXTENDED OF HOUSE 11614, 1-STORY WHITE FRAME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7185 ***********************************************************************
 JV7185  DESIGNATION -  A 82 ECC
 JV7185  PID         -  JV7185
 JV7185  STATE/COUNTY-  MD/FREDERICK
 JV7185  COUNTRY     -  US
 JV7185  USGS QUAD   -  EMMITSBURG (2016)
 JV7185
 JV7185                         *CURRENT SURVEY CONTROL
 JV7185  ______________________________________________________________________
 JV7185* NAD 83(2011) POSITION- 39 41 12.18653(N) 077 15 44.37929(W)   ADJUSTED
 JV7185* NAD 83(2011) ELLIP HT-    97.510 (meters)        (06/27/12)   ADJUSTED
 JV7185* NAD 83(2011) EPOCH   -  2010.00
 JV7185* NAVD 88 ORTHO HEIGHT -   130.73  (meters)      428.9   (feet) LEVELING
 JV7185  ______________________________________________________________________
 JV7185  GEOID HEIGHT    -        -33.221 (meters)                     GEOID18
 JV7185  NAD 83(2011) X  -  1,083,711.552 (meters)                     COMP
 JV7185  NAD 83(2011) Y  - -4,794,107.600 (meters)                     COMP
 JV7185  NAD 83(2011) Z  -  4,051,340.638 (meters)                     COMP
 JV7185  LAPLACE CORR    -          2.61  (seconds)                    DEFLEC18
 JV7185  VERT ORDER      -  THIRD ?
 JV7185
 JV7185  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7185  Standards:
 JV7185         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7185            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7185  -------------------------------------------------------------------
 JV7185  NETWORK    1.16   1.49           0.52   0.42   0.76     -0.00719168
 JV7185  -------------------------------------------------------------------
 JV7185  Click here for local accuracies and other accuracy information.
 JV7185
 JV7185.The horizontal coordinates were established by GPS observations
 JV7185.and adjusted by the National Geodetic Survey in June 2012.
 JV7185
 JV7185.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7185.been affixed to the stable North American tectonic plate. See 
 JV7185.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7185
 JV7185.The horizontal coordinates are valid at the epoch date displayed above
 JV7185.which is a decimal equivalence of Year/Month/Day.
 JV7185
 JV7185.The orthometric height was determined by differential leveling.
 JV7185.The vertical network tie was performed by a horz. field party for horz.
 JV7185.obs reductions. Reset procedures were used to establish the elevation.
 JV7185
 JV7185.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7185.GEOID18 height accuracy estimate available here.
 JV7185
 JV7185.Click photographs - Photos may exist for this station.
 JV7185
 JV7185.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7185
 JV7185.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7185
 JV7185.The ellipsoidal height was determined by GPS observations
 JV7185.and is referenced to NAD 83.
 JV7185
 JV7185. The following values were computed from the NAD 83(2011) position.
 JV7185
 JV7185;                    North         East     Units Scale Factor Converg.
 JV7185;SPC MD       -   224,278.600   377,495.707   MT  1.00004999   -0 09 52.7
 JV7185;SPC MD       -   735,820.71  1,238,500.50   sFT  1.00004999   -0 09 52.7
 JV7185;UTM  18      - 4,395,433.514   305,999.386   MT  1.00006338   -1 26 42.5
 JV7185
 JV7185!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7185!SPC MD       -   0.99998470  x   1.00004999  =   1.00003469
 JV7185!UTM  18      -   0.99998470  x   1.00006338  =   1.00004808
 JV7185
 JV7185_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0599995433(NAD 83)
 JV7185
 JV7185                          SUPERSEDED SURVEY CONTROL
 JV7185
 JV7185  NAD 83(2007)-  39 41 12.18678(N)    077 15 44.37999(W) AD(2002.00) 0
 JV7185  ELLIP H (02/10/07)   97.537  (m)                       GP(2002.00)    
 JV7185  ELLIP H (08/30/02)   97.538  (m)                       GP(       ) 4 2
 JV7185  NAD 83(1991)-  39 41 12.18638(N)    077 15 44.37988(W) AD(       ) 1
 JV7185  ELLIP H (02/09/94)   97.497  (m)                       GP(       ) 4 1
 JV7185
 JV7185.Superseded values are not recommended for survey control.
 JV7185
 JV7185.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7185.See file dsdata.pdf to determine how the superseded data were derived.
 JV7185
 JV7185_MARKER: B = BOLT
 JV7185_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV7185_SP_SET: DRIVEN INTO GROUND
 JV7185_MARK LOGO: GREOMA
 JV7185_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7185_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV7185_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7185+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7185
 JV7185  HISTORY     - Date     Condition        Report By
 JV7185  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7185
 JV7185                          STATION DESCRIPTION
 JV7185
 JV7185'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7185'A 82 ECC IS AN IRON ROD (WITH PLASTIC CAP) SET AS AN ECCENTRIC STATION
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1136 ***********************************************************************
 HV1136  DESIGNATION -  A 84
 HV1136  PID         -  HV1136
 HV1136  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1136  COUNTRY     -  US
 HV1136  USGS QUAD   -  LANHAM (2016)
 HV1136
 HV1136                         *CURRENT SURVEY CONTROL
 HV1136  ______________________________________________________________________
 HV1136* NAD 83(1986) POSITION- 38 53 59.     (N) 076 47 39.     (W)   SCALED
 HV1136* NAVD 88 ORTHO HEIGHT -    24.343 (meters)       79.87  (feet) ADJUSTED
 HV1136  ______________________________________________________________________
 HV1136  GEOID HEIGHT    -        -32.631 (meters)                     GEOID18
 HV1136  DYNAMIC HEIGHT  -         24.329 (meters)       79.82  (feet) COMP
 HV1136  MODELED GRAVITY -    980,081.0   (mgal)                       NAVD 88
 HV1136
 HV1136  VERT ORDER      -  SECOND    CLASS 0
 HV1136
 HV1136.The horizontal coordinates were scaled from a map and have
 HV1136.an estimated accuracy of +/- 6 seconds.
 HV1136
 HV1136.The orthometric height was determined by differential leveling and
 HV1136.adjusted by the NATIONAL GEODETIC SURVEY
 HV1136.in June 1991.
 HV1136
 HV1136.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1136.GEOID18 height accuracy estimate available here.
 HV1136
 HV1136.Click photographs - Photos may exist for this station.
 HV1136
 HV1136.The dynamic height is computed by dividing the NAVD 88
 HV1136.geopotential number by the normal gravity value computed on the
 HV1136.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1136.degrees latitude (g = 980.6199 gals.).
 HV1136
 HV1136.The modeled gravity was interpolated from observed gravity values.
 HV1136
 HV1136;                    North         East    Units  Estimated Accuracy
 HV1136;SPC MD       -   136,900.      417,860.      MT  (+/- 180 meters Scaled)
 HV1136
 HV1136_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ444071(NAD 83)
 HV1136
 HV1136                          SUPERSEDED SURVEY CONTROL
 HV1136
 HV1136  NGVD 29 (11/26/84)   24.598  (m)           80.70   (f) ADJUSTED    2 0
 HV1136
 HV1136.Superseded values are not recommended for survey control.
 HV1136
 HV1136.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1136.See file dsdata.pdf to determine how the superseded data were derived.
 HV1136
 HV1136_MARKER: DB = BENCH MARK DISK
 HV1136_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1136_SP_SET: BRIDGE
 HV1136_STAMPING: A 84 1942
 HV1136_MARK LOGO: CGS
 HV1136_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1136
 HV1136  HISTORY     - Date     Condition        Report By
 HV1136  HISTORY     - 1942     MONUMENTED       CGS
 HV1136
 HV1136                          STATION DESCRIPTION
 HV1136
 HV1136'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1136'2.1 MI E FROM LARGO.
 HV1136'ALONG HIGHWAY 214 ABOUT 2.1 MILES EAST OF THE INTERSECTION
 HV1136'AT LARGO, AT A CONCRETE BRIDGE OVER NORTH BRANCH ABOUT 0.1
 HV1136'MILE WEST OF KOLBES CORNER, SET IN THE TOP OF THE EAST END OF
 HV1136'THE SOUTH BRIDGE WALL, 3.1 FEET HIGHER THAN THE PAVEMENT AND IS
 HV1136'A BENCH MARK DISK SET IN A DRILL HOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8874 ***********************************************************************
 HV8874  DESIGNATION -  A 84 RESET
 HV8874  PID         -  HV8874
 HV8874  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8874  COUNTRY     -  US
 HV8874  USGS QUAD   -  LANHAM (2016)
 HV8874
 HV8874                         *CURRENT SURVEY CONTROL
 HV8874  ______________________________________________________________________
 HV8874* NAD 83(1986) POSITION- 38 53 59.     (N) 076 47 39.     (W)   SCALED
 HV8874* NAVD 88 ORTHO HEIGHT -    26.48  (meters)       86.9   (feet) RESET
 HV8874  ______________________________________________________________________
 HV8874  GEOID HEIGHT    -        -32.631 (meters)                     GEOID18
 HV8874  VERT ORDER      -  THIRD
 HV8874
 HV8874.The horizontal coordinates were scaled from a map and have
 HV8874.an estimated accuracy of +/- 6 seconds.
 HV8874
 HV8874.The orthometric height was computed from unverified reset data.
 HV8874
 HV8874.No vertical observational check was made to the station.
 HV8874
 HV8874.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8874.GEOID18 height accuracy estimate available here.
 HV8874
 HV8874.Click photographs - Photos may exist for this station.
 HV8874
 HV8874;                    North         East    Units  Estimated Accuracy
 HV8874;SPC MD       -   136,900.      417,860.      MT  (+/- 180 meters Scaled)
 HV8874
 HV8874_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ444071(NAD 83)
 HV8874
 HV8874                          SUPERSEDED SURVEY CONTROL
 HV8874
 HV8874  NGVD 29 (11/18/05)   26.74   (m)           87.7    (f) RESET       3  
 HV8874
 HV8874.Superseded values are not recommended for survey control.
 HV8874
 HV8874.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8874.See file dsdata.pdf to determine how the superseded data were derived.
 HV8874
 HV8874_MARKER: DV = VERTICAL CONTROL DISK
 HV8874_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV8874_SP_SET: BRIDGE WINGWALL
 HV8874_STAMPING: A 84 RESET 1989
 HV8874_MARK LOGO: NGS
 HV8874_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8874_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8874_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8874+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HV8874
 HV8874  HISTORY     - Date     Condition        Report By
 HV8874  HISTORY     - 1989     MONUMENTED       NGS
 HV8874
 HV8874                          STATION DESCRIPTION
 HV8874
 HV8874'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HV8874'3.15 KM (1.95 MI) EAST ALONG STATE HIGHWAY 214 FROM ITS JUNCTION WITH
 HV8874'INTERSTATE HIGHWAY,  ABOUT 0.15 KM (0.10 MI) WEST OF A POINT WHERE
 HV8874'STATE HIGHWAY 214 (CENTRAL AVENUE) JUNCTIONS WITH WATKINS PARK DRIVE,
 HV8874'ALONG SOUTH SIDE OF THE EAST BOUND LANE OF STATE HIGHWAY 214, IN THE
 HV8874'SOUTH WINGWALL ON THE WEST SIDE OF A CONCRETE BRIDGE,  ALSO
 HV8874'9.75 M (32.0 FT) WEST OF THE CENTER OF THE BRIDGE WHERE IT
 HV8874'CROSSES THE CREEK, 19.95 M (65.5 FT) NORTHEAST OF THE MOST SOUTHWEST
 HV8874'END OF THE WINGWALL, 19.13 M (62.8 FT) NORTHEAST OF A POWERLINE POLE
 HV8874'WITH A CONSTRUCTION NUMBER 119, 0.45 M (1.5 FT) SOUTH OF THE SOUTH
 HV8874'EDGE OF THE PAVED ROAD WHERE IT CROSSES THE BRIDGE AND 0.32 M
 HV8874'(1.0 FT) SOUTH OF THE SOUTH EDGE OF THE SOUTH PARAPET WALL OF THE
 HV8874'BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1148 ***********************************************************************
 HV1148  DESIGNATION -  A 85
 HV1148  PID         -  HV1148
 HV1148  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1148  COUNTRY     -  US
 HV1148  USGS QUAD   -  LANHAM (2016)
 HV1148
 HV1148                         *CURRENT SURVEY CONTROL
 HV1148  ______________________________________________________________________
 HV1148* NAD 83(1986) POSITION- 38 57 38.     (N) 076 45 14.     (W)   SCALED
 HV1148* NAVD 88 ORTHO HEIGHT -    38.879 (meters)      127.56  (feet) ADJUSTED
 HV1148  ______________________________________________________________________
 HV1148  GEOID HEIGHT    -        -32.659 (meters)                     GEOID18
 HV1148  DYNAMIC HEIGHT  -         38.858 (meters)      127.49  (feet) COMP
 HV1148  MODELED GRAVITY -    980,083.8   (mgal)                       NAVD 88
 HV1148
 HV1148  VERT ORDER      -  SECOND    CLASS I
 HV1148
 HV1148.The horizontal coordinates were scaled from a map and have
 HV1148.an estimated accuracy of +/- 6 seconds.
 HV1148
 HV1148.The orthometric height was determined by differential leveling and
 HV1148.adjusted by the NATIONAL GEODETIC SURVEY
 HV1148.in November 2012.
 HV1148
 HV1148.No vertical observational check was made to the station.
 HV1148
 HV1148.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1148.GEOID18 height accuracy estimate available here.
 HV1148
 HV1148.Click photographs - Photos may exist for this station.
 HV1148
 HV1148.The dynamic height is computed by dividing the NAVD 88
 HV1148.geopotential number by the normal gravity value computed on the
 HV1148.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1148.degrees latitude (g = 980.6199 gals.).
 HV1148
 HV1148.The modeled gravity was interpolated from observed gravity values.
 HV1148
 HV1148;                    North         East    Units  Estimated Accuracy
 HV1148;SPC MD       -   143,660.      421,330.      MT  (+/- 180 meters Scaled)
 HV1148
 HV1148_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ480138(NAD 83)
 HV1148
 HV1148                          SUPERSEDED SURVEY CONTROL
 HV1148
 HV1148  NAVD 88 (06/15/91)   38.934  (m)          127.74   (f) SUPERSEDED  2 0
 HV1148  NGVD 29 (11/26/84)   39.174  (m)          128.52   (f) ADJUSTED    2 0
 HV1148
 HV1148.Superseded values are not recommended for survey control.
 HV1148
 HV1148.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1148.See file dsdata.pdf to determine how the superseded data were derived.
 HV1148
 HV1148_MARKER: DB = BENCH MARK DISK
 HV1148_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1148_SP_SET: BRIDGE SEAT
 HV1148_STAMPING: A 85 1942
 HV1148_MARK LOGO: CGS
 HV1148_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1148_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1148+SATELLITE: SATELLITE OBSERVATIONS - January 02, 1995
 HV1148
 HV1148  HISTORY     - Date     Condition        Report By
 HV1148  HISTORY     - 1942     MONUMENTED       CGS
 HV1148  HISTORY     - 19950102 GOOD             MDSHA
 HV1148
 HV1148                          STATION DESCRIPTION
 HV1148
 HV1148'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1148'0.6 MI S FROM COLLINGTON.
 HV1148'ABOUT 0.6 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 HV1148'OVERHEAD BRIDGE AT COLLINGTON, PRINCE GEORGES COUNTY, AT A
 HV1148'CONCRETE BRIDGE, IN THE TOP OF THE EAST END OF THE SOUTH BRIDGE
 HV1148'SEAT, 5-1/2 FEET EAST OF THE EAST RAIL, AND ABOUT 1 FOOT LOWER
 HV1148'THAN THE RAIL.  A STANDARD DISK, STAMPED A 85 1942.
 HV1148
 HV1148                          STATION RECOVERY (1995)
 HV1148
 HV1148'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1995 (CAM)
 HV1148'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1074 ***********************************************************************
 HV1074  DESIGNATION -  A 86
 HV1074  PID         -  HV1074
 HV1074  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1074  COUNTRY     -  US
 HV1074  USGS QUAD   -  PISCATAWAY (2016)
 HV1074
 HV1074                         *CURRENT SURVEY CONTROL
 HV1074  ______________________________________________________________________
 HV1074* NAD 83(1986) POSITION- 38 43 50.     (N) 076 59 33.     (W)   SCALED
 HV1074* NAVD 88 ORTHO HEIGHT -    17.617 (meters)       57.80  (feet) ADJUSTED
 HV1074  ______________________________________________________________________
 HV1074  GEOID HEIGHT    -        -32.454 (meters)                     GEOID18
 HV1074  DYNAMIC HEIGHT  -         17.607 (meters)       57.77  (feet) COMP
 HV1074  MODELED GRAVITY -    980,076.3   (mgal)                       NAVD 88
 HV1074
 HV1074  VERT ORDER      -  SECOND    CLASS 0
 HV1074
 HV1074.The horizontal coordinates were scaled from a map and have
 HV1074.an estimated accuracy of +/- 6 seconds.
 HV1074
 HV1074.The orthometric height was determined by differential leveling and
 HV1074.adjusted by the NATIONAL GEODETIC SURVEY
 HV1074.in June 1991.
 HV1074
 HV1074.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1074.GEOID18 height accuracy estimate available here.
 HV1074
 HV1074.Click photographs - Photos may exist for this station.
 HV1074
 HV1074.The dynamic height is computed by dividing the NAVD 88
 HV1074.geopotential number by the normal gravity value computed on the
 HV1074.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1074.degrees latitude (g = 980.6199 gals.).
 HV1074
 HV1074.The modeled gravity was interpolated from observed gravity values.
 HV1074
 HV1074;                    North         East    Units  Estimated Accuracy
 HV1074;SPC MD       -   118,100.      400,650.      MT  (+/- 180 meters Scaled)
 HV1074
 HV1074_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH268887(NAD 83)
 HV1074
 HV1074                          SUPERSEDED SURVEY CONTROL
 HV1074
 HV1074  NGVD 29 (05/01/89)   17.854  (m)           58.58   (f) ADJUSTED    2 0
 HV1074  NGVD 29 (??/??/87)   17.894  (m)           58.71   (f) SUPERSEDED  2 0
 HV1074
 HV1074.Superseded values are not recommended for survey control.
 HV1074
 HV1074.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1074.See file dsdata.pdf to determine how the superseded data were derived.
 HV1074
 HV1074_MARKER: DB = BENCH MARK DISK
 HV1074_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1074_STAMPING: A 86 1942
 HV1074_MARK LOGO: CGS
 HV1074_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1074+STABILITY: SURFACE MOTION
 HV1074
 HV1074  HISTORY     - Date     Condition        Report By
 HV1074  HISTORY     - 1942     MONUMENTED       CGS
 HV1074
 HV1074                          STATION DESCRIPTION
 HV1074
 HV1074'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1074'1 MI SE FROM SILESIA.
 HV1074'ALONG HIGHWAY 224 ABOUT 0.95 MILE SOUTHEAST OF THE ROBERT TILCH
 HV1074'STORE AT SILESIA, AT A WHITE FRAME TAVERN BUILDING CALLED MEADOW
 HV1074'VIEW, IN THE SOUTHWEST CORNER OF THE YARD, 44 FEET SOUTHWEST OF
 HV1074'THE SOUTHWEST CORNER OF THE TAVERN, 20.4 FEET EAST OF THE
 HV1074'CENTER LINE OF THE HIGHWAY, 15.2 FEET SOUTH-SOUTHEAST OF TELEPHONEE
 HV1074'POLE NUMBER U.S. 354, 1 1/2 FEET NORTH OF AN EAST-WEST FENCE
 HV1074'LINE, 3 FEET EAST OF THE LINE OF POLES, A BENCH MARK DISK SET
 HV1074'IN THE TOP OF A CONCRETE POST PROJECTING ABOUT 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2555 ***********************************************************************
 JV2555  DESIGNATION -  A 87
 JV2555  PID         -  JV2555
 JV2555  STATE/COUNTY-  MD/MONTGOMERY
 JV2555  COUNTRY     -  US
 JV2555  USGS QUAD   -  DAMASCUS (2016)
 JV2555
 JV2555                         *CURRENT SURVEY CONTROL
 JV2555  ______________________________________________________________________
 JV2555* NAD 83(1986) POSITION- 39 16 37.     (N) 077 09 27.     (W)   SCALED
 JV2555* NAVD 88 ORTHO HEIGHT -   193.513 (meters)      634.88  (feet) ADJUSTED
 JV2555  ______________________________________________________________________
 JV2555  GEOID HEIGHT    -        -31.815 (meters)                     GEOID18
 JV2555  DYNAMIC HEIGHT  -        193.412 (meters)      634.55  (feet) COMP
 JV2555  MODELED GRAVITY -    980,103.5   (mgal)                       NAVD 88
 JV2555
 JV2555  VERT ORDER      -  SECOND    CLASS 0
 JV2555
 JV2555.The horizontal coordinates were scaled from a map and have
 JV2555.an estimated accuracy of +/- 6 seconds.
 JV2555
 JV2555.The orthometric height was determined by differential leveling and
 JV2555.adjusted by the NATIONAL GEODETIC SURVEY
 JV2555.in June 1991.
 JV2555
 JV2555.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2555.GEOID18 height accuracy estimate available here.
 JV2555
 JV2555.Click photographs - Photos may exist for this station.
 JV2555
 JV2555.The dynamic height is computed by dividing the NAVD 88
 JV2555.geopotential number by the normal gravity value computed on the
 JV2555.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2555.degrees latitude (g = 980.6199 gals.).
 JV2555
 JV2555.The modeled gravity was interpolated from observed gravity values.
 JV2555
 JV2555;                    North         East    Units  Estimated Accuracy
 JV2555;SPC MD       -   178,760.      386,410.      MT  (+/- 180 meters Scaled)
 JV2555
 JV2555_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ138497(NAD 83)
 JV2555
 JV2555                          SUPERSEDED SURVEY CONTROL
 JV2555
 JV2555  NGVD 29 (11/26/84)  193.721  (m)          635.57   (f) ADJUSTED    2 0
 JV2555
 JV2555.Superseded values are not recommended for survey control.
 JV2555
 JV2555.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2555.See file dsdata.pdf to determine how the superseded data were derived.
 JV2555
 JV2555_MARKER: DB = BENCH MARK DISK
 JV2555_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2555_STAMPING: A 87 1942
 JV2555_MARK LOGO: CGS
 JV2555_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2555+STABILITY: SURFACE MOTION
 JV2555
 JV2555  HISTORY     - Date     Condition        Report By
 JV2555  HISTORY     - 1942     MONUMENTED       CGS
 JV2555
 JV2555                          STATION DESCRIPTION
 JV2555
 JV2555'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2555'1.8 MI N FROM ETCHISON.
 JV2555'1.8 MILES NORTH OF ETCHISON, MONTGOMERY COUNTY.  THIS BENCH MARK
 JV2555'MAY BE REACHED BY GOING 1.5 MILES NORTHWEST ALONG THE DAMASCUS
 JV2555'ROAD, THENCE 0.3 MILE NORTH ALONG A DIRT ROAD.  IT IS IN THE
 JV2555'NORTHEAST ANGLE OF THE JUNCTION OF A DIRT ROAD LEADING EAST TO
 JV2555'A TWO-STORY WHITE HOUSE, 59 FEET NORTH OF THE CENTER LINE OF THE
 JV2555'FARM ROAD, 18 FEET EAST OF THE CENTER LINE OF THE MAIN ROAD, 30
 JV2555'FEET SOUTH OF AN 18-INCH CEDAR TREE, 5.7 FEET NORTH OF A
 JV2555'POWER-TRANSMISSION LINE POLE, AND ABOUT 1 FOOT HIGHER THAN THE
 JV2555'ROAD.  A STANDARD DISK, STAMPED A 87 1942 AND SET IN THE TOP OF
 JV2555'A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2379 ***********************************************************************
 JV2379  DESIGNATION -  A 88
 JV2379  PID         -  JV2379
 JV2379  STATE/COUNTY-  MD/FREDERICK
 JV2379  COUNTRY     -  US
 JV2379  USGS QUAD   -  FREDERICK (2016)
 JV2379
 JV2379                         *CURRENT SURVEY CONTROL
 JV2379  ______________________________________________________________________
 JV2379* NAD 83(1986) POSITION- 39 25 12.     (N) 077 27 52.     (W)   SCALED
 JV2379* NAVD 88 ORTHO HEIGHT -   117.506 (meters)      385.52  (feet) ADJUSTED
 JV2379  ______________________________________________________________________
 JV2379  GEOID HEIGHT    -        -32.812 (meters)                     GEOID18
 JV2379  DYNAMIC HEIGHT  -        117.442 (meters)      385.31  (feet) COMP
 JV2379  MODELED GRAVITY -    980,087.4   (mgal)                       NAVD 88
 JV2379
 JV2379  VERT ORDER      -  SECOND    CLASS 0
 JV2379
 JV2379.The horizontal coordinates were scaled from a map and have
 JV2379.an estimated accuracy of +/- 6 seconds.
 JV2379
 JV2379.The orthometric height was determined by differential leveling and
 JV2379.adjusted by the NATIONAL GEODETIC SURVEY
 JV2379.in June 1991.
 JV2379
 JV2379.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2379.GEOID18 height accuracy estimate available here.
 JV2379
 JV2379.Click photographs - Photos may exist for this station.
 JV2379
 JV2379.The dynamic height is computed by dividing the NAVD 88
 JV2379.geopotential number by the normal gravity value computed on the
 JV2379.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2379.degrees latitude (g = 980.6199 gals.).
 JV2379
 JV2379.The modeled gravity was interpolated from observed gravity values.
 JV2379
 JV2379;                    North         East    Units  Estimated Accuracy
 JV2379;SPC MD       -   194,740.      360,010.      MT  (+/- 180 meters Scaled)
 JV2379
 JV2379_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ878662(NAD 83)
 JV2379
 JV2379                          SUPERSEDED SURVEY CONTROL
 JV2379
 JV2379  NGVD 29 (11/26/84)  117.726  (m)          386.24   (f) ADJUSTED    2 0
 JV2379
 JV2379.Superseded values are not recommended for survey control.
 JV2379
 JV2379.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2379.See file dsdata.pdf to determine how the superseded data were derived.
 JV2379
 JV2379_MARKER: DB = BENCH MARK DISK
 JV2379_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2379_STAMPING: A 88 1942
 JV2379_MARK LOGO: CGS
 JV2379_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2379+STABILITY: SURFACE MOTION
 JV2379
 JV2379  HISTORY     - Date     Condition        Report By
 JV2379  HISTORY     - 1942     MONUMENTED       CGS
 JV2379  HISTORY     - 1958     GOOD             CGS
 JV2379
 JV2379                          STATION DESCRIPTION
 JV2379
 JV2379'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2379'3.1 MI W FROM FREDERICK.
 JV2379'2.9 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE AT
 JV2379'FREDERICK, THENCE 0.2 MILE WEST ALONG U.S. ALT. 40 HIGHWAY, 375
 JV2379'FEET EAST OF THE INTERSECTION OF MT. PHILLIP ROAD, 96 FEET WEST
 JV2379'OF THE CENTER LINE OF A PRIVATE DRIVEWAY LEADING NORTH, 25.5
 JV2379'FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 2.6 FEET SOUTHEAST
 JV2379'OF THE NORTH STEEL LEG SUPPORTING A BRADDOCK HEIGHTS 3 IN SIGN,
 JV2379'ABOUT 1/2 FOOT LOWER THAN THE HIGHWAY, AND SET IN THE TOP OF A
 JV2379'CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2380 ***********************************************************************
 JV2380  DESIGNATION -  A 88 RESET
 JV2380  PID         -  JV2380
 JV2380  STATE/COUNTY-  MD/FREDERICK
 JV2380  COUNTRY     -  US
 JV2380  USGS QUAD   -  FREDERICK (2016)
 JV2380
 JV2380                         *CURRENT SURVEY CONTROL
 JV2380  ______________________________________________________________________
 JV2380* NAD 83(1986) POSITION- 39 25 12.     (N) 077 27 52.     (W)   SCALED
 JV2380* NAVD 88 ORTHO HEIGHT -   117.44  (meters)      385.3   (feet) RESET
 JV2380  ______________________________________________________________________
 JV2380  GEOID HEIGHT    -        -32.812 (meters)                     GEOID18
 JV2380  VERT ORDER      -  THIRD
 JV2380
 JV2380.The horizontal coordinates were scaled from a map and have
 JV2380.an estimated accuracy of +/- 6 seconds.
 JV2380
 JV2380.The orthometric height was computed from unverified reset data.
 JV2380
 JV2380.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2380.GEOID18 height accuracy estimate available here.
 JV2380
 JV2380.Click photographs - Photos may exist for this station.
 JV2380
 JV2380;                    North         East    Units  Estimated Accuracy
 JV2380;SPC MD       -   194,740.      360,010.      MT  (+/- 180 meters Scaled)
 JV2380
 JV2380_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ878662(NAD 83)
 JV2380
 JV2380                          SUPERSEDED SURVEY CONTROL
 JV2380
 JV2380  NGVD 29 (??/??/??)  117.66   (m)          386.0    (f) RESET       3  
 JV2380
 JV2380.Superseded values are not recommended for survey control.
 JV2380
 JV2380.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2380.See file dsdata.pdf to determine how the superseded data were derived.
 JV2380
 JV2380_MARKER: DB = BENCH MARK DISK
 JV2380_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2380_STAMPING: A 88 RESET 1966
 JV2380_MARK LOGO: CGS
 JV2380_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2380+STABILITY: SURFACE MOTION
 JV2380
 JV2380  HISTORY     - Date     Condition        Report By
 JV2380  HISTORY     - 1966     MONUMENTED       MDSRC
 JV2380
 JV2380                          STATION DESCRIPTION
 JV2380
 JV2380'DESCRIBED BY MD STATE ROADS COMM 1966
 JV2380'1.6 MI W FROM FREDERICK.
 JV2380'ABOUT 1.4 MILES WEST ALONG U.S. ROUTE 40 FROM THE FREDERICK
 JV2380'BY-PASS HIGHWAY, THENCE 0.2 MILE SOUTH ALONG ALTERNATE U.S.
 JV2380'HIGHWAY 40, AT THE WEST EDGE OF A DRIVE-IN RESTAURANT PARKING
 JV2380'AREA, 118.8 FEET NORTH OF THE CENTER LINE OF ALTERNATE U.S. HWY.
 JV2380'40, 150 FEET SOUTH OF THE CENTER LINE OF U.S. HIGHWAY 40, 9.5
 JV2380'FEET EAST OF THE CENTER LINE OF A DRIVEWAY, 0.7 FEET SOUTHWEST
 JV2380'OF POWER POLE 50220 AND SET IN THE TOP OF A CONCRETE POST
 JV2380'FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2975 ***********************************************************************
 JV2975  DESIGNATION -  A 89
 JV2975  PID         -  JV2975
 JV2975  STATE/COUNTY-  MD/FREDERICK
 JV2975  COUNTRY     -  US
 JV2975  USGS QUAD   -  MIDDLETOWN (2016)
 JV2975
 JV2975                         *CURRENT SURVEY CONTROL
 JV2975  ______________________________________________________________________
 JV2975* NAD 83(1986) POSITION- 39 27 09.     (N) 077 32 24.     (W)   SCALED
 JV2975* NAVD 88 ORTHO HEIGHT -   176.453 (meters)      578.91  (feet) ADJUSTED
 JV2975  ______________________________________________________________________
 JV2975  GEOID HEIGHT    -        -33.062 (meters)                     GEOID18
 JV2975  DYNAMIC HEIGHT  -        176.355 (meters)      578.59  (feet) COMP
 JV2975  MODELED GRAVITY -    980,066.1   (mgal)                       NAVD 88
 JV2975
 JV2975  VERT ORDER      -  SECOND    CLASS 0
 JV2975
 JV2975.The horizontal coordinates were scaled from a map and have
 JV2975.an estimated accuracy of +/- 6 seconds.
 JV2975
 JV2975.The orthometric height was determined by differential leveling and
 JV2975.adjusted by the NATIONAL GEODETIC SURVEY
 JV2975.in June 1991.
 JV2975
 JV2975.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2975.GEOID18 height accuracy estimate available here.
 JV2975
 JV2975.Click photographs - Photos may exist for this station.
 JV2975
 JV2975.The dynamic height is computed by dividing the NAVD 88
 JV2975.geopotential number by the normal gravity value computed on the
 JV2975.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2975.degrees latitude (g = 980.6199 gals.).
 JV2975
 JV2975.The modeled gravity was interpolated from observed gravity values.
 JV2975
 JV2975;                    North         East    Units  Estimated Accuracy
 JV2975;SPC MD       -   198,380.      353,520.      MT  (+/- 180 meters Scaled)
 JV2975
 JV2975_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ814700(NAD 83)
 JV2975
 JV2975                          SUPERSEDED SURVEY CONTROL
 JV2975
 JV2975  NGVD 29 (11/26/84)  176.665  (m)          579.61   (f) ADJUSTED    2 0
 JV2975
 JV2975.Superseded values are not recommended for survey control.
 JV2975
 JV2975.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2975.See file dsdata.pdf to determine how the superseded data were derived.
 JV2975
 JV2975_MARKER: DB = BENCH MARK DISK
 JV2975_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV2975_SP_SET: CULVERT HEADWALL
 JV2975_STAMPING: A 89 1942
 JV2975_MARK LOGO: CGS
 JV2975_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2975
 JV2975  HISTORY     - Date     Condition        Report By
 JV2975  HISTORY     - 1942     MONUMENTED       CGS
 JV2975
 JV2975                          STATION DESCRIPTION
 JV2975
 JV2975'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2975'0.7 MI N FROM MIDDLETOWN.
 JV2975'0.7 MILE NORTH ALONG STATE HIGHWAY 17 FROM THE INTERSECTION OF
 JV2975'U.S. HIGHWAY 40 AT MIDDLETOWN, FREDERICK COUNTY, 29.5 FEET WEST
 JV2975'OF POLE F 7836, AT A 24-INCH CULVERT, IN THE TOP OF THE EAST
 JV2975'END OF THE SOUTH HEAD WALL, AND 14 FEET SOUTH OF THE CENTER LINE
 JV2975'OF THE HIGHWAY.  A STANDARD DISK, STAMPED A 89 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0050 ***********************************************************************
 HV0050  DESIGNATION -  A 9
 HV0050  PID         -  HV0050
 HV0050  STATE/COUNTY-  MD/TALBOT
 HV0050  COUNTRY     -  US
 HV0050  USGS QUAD   -  EASTON (2016)
 HV0050
 HV0050                         *CURRENT SURVEY CONTROL
 HV0050  ______________________________________________________________________
 HV0050* NAD 83(1986) POSITION- 38 49 38.     (N) 076 02 12.     (W)   SCALED
 HV0050* NAVD 88 ORTHO HEIGHT -    17.582 (meters)       57.68  (feet) ADJUSTED
 HV0050  ______________________________________________________________________
 HV0050  GEOID HEIGHT    -        -34.621 (meters)                     GEOID18
 HV0050  DYNAMIC HEIGHT  -         17.572 (meters)       57.65  (feet) COMP
 HV0050  MODELED GRAVITY -    980,041.5   (mgal)                       NAVD 88
 HV0050
 HV0050  VERT ORDER      -  SECOND    CLASS 0
 HV0050
 HV0050.The horizontal coordinates were scaled from a map and have
 HV0050.an estimated accuracy of +/- 6 seconds.
 HV0050
 HV0050.The orthometric height was determined by differential leveling and
 HV0050.adjusted by the NATIONAL GEODETIC SURVEY
 HV0050.in June 1991.
 HV0050
 HV0050.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0050.GEOID18 height accuracy estimate available here.
 HV0050
 HV0050.Click photographs - Photos may exist for this station.
 HV0050
 HV0050.The dynamic height is computed by dividing the NAVD 88
 HV0050.geopotential number by the normal gravity value computed on the
 HV0050.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0050.degrees latitude (g = 980.6199 gals.).
 HV0050
 HV0050.The modeled gravity was interpolated from observed gravity values.
 HV0050
 HV0050;                    North         East    Units  Estimated Accuracy
 HV0050;SPC MD       -   129,270.      483,650.      MT  (+/- 180 meters Scaled)
 HV0050
 HV0050_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH100981(NAD 83)
 HV0050
 HV0050                          SUPERSEDED SURVEY CONTROL
 HV0050
 HV0050  NGVD 29 (11/26/84)   17.818  (m)           58.46   (f) ADJUSTED    2 0
 HV0050
 HV0050.Superseded values are not recommended for survey control.
 HV0050
 HV0050.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0050.See file dsdata.pdf to determine how the superseded data were derived.
 HV0050
 HV0050_MARKER: DB = BENCH MARK DISK
 HV0050_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0050_STAMPING: A 9 1935
 HV0050_MARK LOGO: CGS
 HV0050_PROJECTION: PROJECTING 10 CENTIMETERS
 HV0050_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0050+STABILITY: SURFACE MOTION
 HV0050
 HV0050  HISTORY     - Date     Condition        Report By
 HV0050  HISTORY     - 1935     MONUMENTED       CGS
 HV0050  HISTORY     - 1942     GOOD             CGS
 HV0050
 HV0050                          STATION DESCRIPTION
 HV0050
 HV0050'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HV0050'4.2 MI N FROM EASTON.
 HV0050'4.2 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HV0050'AT EASTON, TALBOT COUNTY, 0.3 MILE NORTH OF MILEPOST 13, AT A
 HV0050'PRIVATE-ROAD CROSSING 85 FEET WEST OF THE WEST RAIL, 30 FEET
 HV0050'WEST OF THE CENTERLINE OF THE ROAD, 3 FEET SOUTHWEST OF THE
 HV0050'NORTHEAST CORNER OF A FIELD, AND ABOUT 2 FEET LOWER THAN THE
 HV0050'TRACK.  A STANDARD DISK, STAMPED A 9 1935 AND SET IN THE TOP OF
 HV0050'A CONCRETE POST PROJECTING 4 INCHES ABOVE GROUND.
 HV0050
 HV0050                          STATION RECOVERY (1942)
 HV0050
 HV0050'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0050'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2523 ***********************************************************************
 JV2523  DESIGNATION -  A 90 RESET
 JV2523  PID         -  JV2523
 JV2523  STATE/COUNTY-  MD/FREDERICK
 JV2523  COUNTRY     -  US
 JV2523  USGS QUAD   -  FREDERICK (2016)
 JV2523
 JV2523                         *CURRENT SURVEY CONTROL
 JV2523  ______________________________________________________________________
 JV2523* NAD 83(1986) POSITION- 39 29 36.     (N) 077 23 54.     (W)   SCALED
 JV2523* NAVD 88 ORTHO HEIGHT -    88.00  (meters)      288.7   (feet) RESET
 JV2523  ______________________________________________________________________
 JV2523  GEOID HEIGHT    -        -32.882 (meters)                     GEOID18
 JV2523  VERT ORDER      -  THIRD
 JV2523
 JV2523.The horizontal coordinates were scaled from a map and have
 JV2523.an estimated accuracy of +/- 6 seconds.
 JV2523
 JV2523.The orthometric height was computed from unverified reset data.
 JV2523
 JV2523.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2523.GEOID18 height accuracy estimate available here.
 JV2523
 JV2523.Click photographs - Photos may exist for this station.
 JV2523
 JV2523;                    North         East    Units  Estimated Accuracy
 JV2523;SPC MD       -   202,850.      365,740.      MT  (+/- 180 meters Scaled)
 JV2523
 JV2523_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ937742(NAD 83)
 JV2523
 JV2523                          SUPERSEDED SURVEY CONTROL
 JV2523
 JV2523  NGVD 29 (??/??/??)   88.21   (m)          289.4    (f) RESET       3  
 JV2523
 JV2523.Superseded values are not recommended for survey control.
 JV2523
 JV2523.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2523.See file dsdata.pdf to determine how the superseded data were derived.
 JV2523
 JV2523_MARKER: DB = BENCH MARK DISK
 JV2523_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2523_STAMPING: A 90 RESET 1961
 JV2523_MARK LOGO: CGS
 JV2523_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2523+STABILITY: SURFACE MOTION
 JV2523
 JV2523  HISTORY     - Date     Condition        Report By
 JV2523  HISTORY     - 1961     MONUMENTED       MDSRC
 JV2523  HISTORY     - 19970808 MARK NOT FOUND   USPSQD
 JV2523
 JV2523                          STATION DESCRIPTION
 JV2523
 JV2523'DESCRIBED BY MD STATE ROADS COMM 1961
 JV2523'3 MI N FROM HARMONY GROVE.
 JV2523'THIS MARK IS LOCATED 3.0 MILES NORTH ALONG U.S. ROUTE 15 FROM
 JV2523'THE RAILROAD CROSSING AT HARMONY GROVE, AND 3.0 MILES SOUTH ALONG
 JV2523'U.S. ROUTE 15 FROM THE RAILROAD CROSSING AT LEWISTOWN, 0.5 MILE
 JV2523'SOUTH OF THE VILLAGE OF HANSONVILLE, AND APPROXIMATELY 325 FEET
 JV2523'SOUTH OF THE WHITE COTTAGE INN.  IT IS 65.0 FEET WEST OF THE
 JV2523'CENTERLINE OF U.S. ROUTE 15 (NEW ROUTE LOCATION), 31.5 FEET
 JV2523'NORTHEAST OF THE NORTHEAST CORNER OF A 1 1/2 STORY CINDER
 JV2523'BLOCK DWELLING, 56.5 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A
 JV2523'1 1/2 STORY FRAME DWELLING, 16.7 FEET SOUTHEAST OF THE
 JV2523'CENTERLINE OF THE DRIVEWAY, AND 1.1 FEET NORTH OF POLE F-4510,
 JV2523'AND SET IN CONCRETE FLUSH WITH THE GROUND.
 JV2523
 JV2523                          STATION RECOVERY (1997)
 JV2523
 JV2523'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV2523'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2364 ***********************************************************************
 JV2364  DESIGNATION -  A 91
 JV2364  PID         -  JV2364
 JV2364  STATE/COUNTY-  MD/MONTGOMERY
 JV2364  COUNTRY     -  US
 JV2364  USGS QUAD   -  GERMANTOWN (2016)
 JV2364
 JV2364                         *CURRENT SURVEY CONTROL
 JV2364  ______________________________________________________________________
 JV2364* NAD 83(1986) POSITION- 39 13 57.     (N) 077 21 49.     (W)   SCALED
 JV2364* NAVD 88 ORTHO HEIGHT -   177.979 (meters)      583.92  (feet) ADJUSTED
 JV2364  ______________________________________________________________________
 JV2364  GEOID HEIGHT    -        -32.128 (meters)                     GEOID18
 JV2364  DYNAMIC HEIGHT  -        177.883 (meters)      583.60  (feet) COMP
 JV2364  MODELED GRAVITY -    980,082.6   (mgal)                       NAVD 88
 JV2364
 JV2364  VERT ORDER      -  SECOND    CLASS 0
 JV2364
 JV2364.The horizontal coordinates were scaled from a map and have
 JV2364.an estimated accuracy of +/- 6 seconds.
 JV2364
 JV2364.The orthometric height was determined by differential leveling and
 JV2364.adjusted by the NATIONAL GEODETIC SURVEY
 JV2364.in June 1991.
 JV2364
 JV2364.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2364.GEOID18 height accuracy estimate available here.
 JV2364
 JV2364.Click photographs - Photos may exist for this station.
 JV2364
 JV2364.The dynamic height is computed by dividing the NAVD 88
 JV2364.geopotential number by the normal gravity value computed on the
 JV2364.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2364.degrees latitude (g = 980.6199 gals.).
 JV2364
 JV2364.The modeled gravity was interpolated from observed gravity values.
 JV2364
 JV2364;                    North         East    Units  Estimated Accuracy
 JV2364;SPC MD       -   173,880.      368,610.      MT  (+/- 180 meters Scaled)
 JV2364
 JV2364_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ959452(NAD 83)
 JV2364
 JV2364                          SUPERSEDED SURVEY CONTROL
 JV2364
 JV2364  NGVD 29 (11/26/84)  178.170  (m)          584.55   (f) ADJUSTED    2 0
 JV2364
 JV2364.Superseded values are not recommended for survey control.
 JV2364
 JV2364.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2364.See file dsdata.pdf to determine how the superseded data were derived.
 JV2364
 JV2364_MARKER: DB = BENCH MARK DISK
 JV2364_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2364_STAMPING: A 91 1942
 JV2364_MARK LOGO: CGS
 JV2364_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2364+STABILITY: SURFACE MOTION
 JV2364
 JV2364  HISTORY     - Date     Condition        Report By
 JV2364  HISTORY     - 1942     MONUMENTED       CGS
 JV2364  HISTORY     - 1979     MARK NOT FOUND   NGS
 JV2364
 JV2364                          STATION DESCRIPTION
 JV2364
 JV2364'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2364'1.1 MI NE FROM BARNESVILLE.
 JV2364'1.1 MILES NORTHEAST ALONG THE HYATTSTOWN ROAD FROM THE POST
 JV2364'OFFICE AT BARNESVILLE, MONTGOMERY COUNTY, 6 FEET SOUTH OF HIGHWAY
 JV2364'MARKER 72, 22 FEET SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY,
 JV2364'5.7 FEET NORTH OF A 6-INCH HICKORY TREE, AND NEAR A WHITE WOODEN
 JV2364'WITNESS POST.  A STANDARD DISK, STAMPED A 91 1942 AND SET IN THE
 JV2364'TOP OF A CONCRETE POST.
 JV2364
 JV2364                          STATION RECOVERY (1979)
 JV2364
 JV2364'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2364'EXTENSIVE SEARCH MADE. ALL MEASUREMENTS GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1191 ***********************************************************************
 JV1191  DESIGNATION -  A 92
 JV1191  PID         -  JV1191
 JV1191  STATE/COUNTY-  MD/BALTIMORE
 JV1191  COUNTRY     -  US
 JV1191  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1191
 JV1191                         *CURRENT SURVEY CONTROL
 JV1191  ______________________________________________________________________
 JV1191* NAD 83(1986) POSITION- 39 22 33.     (N) 076 40 07.     (W)   SCALED
 JV1191* NAVD 88 ORTHO HEIGHT -   112.412 (meters)      368.81  (feet) ADJUSTED
 JV1191  ______________________________________________________________________
 JV1191  GEOID HEIGHT    -        -32.437 (meters)                     GEOID18
 JV1191  DYNAMIC HEIGHT  -        112.353 (meters)      368.61  (feet) COMP
 JV1191  MODELED GRAVITY -    980,101.3   (mgal)                       NAVD 88
 JV1191
 JV1191  VERT ORDER      -  SECOND    CLASS 0
 JV1191
 JV1191.The horizontal coordinates were scaled from a map and have
 JV1191.an estimated accuracy of +/- 6 seconds.
 JV1191
 JV1191.The orthometric height was determined by differential leveling and
 JV1191.adjusted by the NATIONAL GEODETIC SURVEY
 JV1191.in June 1991.
 JV1191
 JV1191.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1191.GEOID18 height accuracy estimate available here.
 JV1191
 JV1191.Click photographs - Photos may exist for this station.
 JV1191
 JV1191.The dynamic height is computed by dividing the NAVD 88
 JV1191.geopotential number by the normal gravity value computed on the
 JV1191.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1191.degrees latitude (g = 980.6199 gals.).
 JV1191
 JV1191.The modeled gravity was interpolated from observed gravity values.
 JV1191
 JV1191;                    North         East    Units  Estimated Accuracy
 JV1191;SPC MD       -   189,780.      428,550.      MT  (+/- 180 meters Scaled)
 JV1191
 JV1191_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ562598(NAD 83)
 JV1191
 JV1191                          SUPERSEDED SURVEY CONTROL
 JV1191
 JV1191  NGVD 29 (11/26/84)  112.640  (m)          369.55   (f) ADJUSTED    2 0
 JV1191
 JV1191.Superseded values are not recommended for survey control.
 JV1191
 JV1191.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1191.See file dsdata.pdf to determine how the superseded data were derived.
 JV1191
 JV1191_MARKER: DB = BENCH MARK DISK
 JV1191_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1191_SP_SET: BRIDGE
 JV1191_STAMPING: A 92 1942
 JV1191_MARK LOGO: CGS
 JV1191_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1191
 JV1191  HISTORY     - Date     Condition        Report By
 JV1191  HISTORY     - 1942     MONUMENTED       CGS
 JV1191
 JV1191                          STATION DESCRIPTION
 JV1191
 JV1191'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1191'1 MI NW FROM MOUNT WASHINGTON.
 JV1191'1.0 MILE NORTHWEST ALONG SMITH AVENUE FROM THE RAILROAD STATION
 JV1191'AT MOUNT WASHINGTON, BALTIMORE COUNTY, SET ON THE SOUTH SIDE OF
 JV1191'THE HIGHWAY, IN THE WEST END OF A SMALL BRIDGE, 12.2 FEET SOUTH
 JV1191'OF THE CENTER LINE OF THE HIGHWAY, 15.6 FEET WEST OF POLE NUMBER
 JV1191'6805, SET IN A DRILLED HOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2505 ***********************************************************************
 JV2505  DESIGNATION -  A 93
 JV2505  PID         -  JV2505
 JV2505  STATE/COUNTY-  MD/FREDERICK
 JV2505  COUNTRY     -  US
 JV2505  USGS QUAD   -  LIBERTYTOWN (2016)
 JV2505
 JV2505                         *CURRENT SURVEY CONTROL
 JV2505  ______________________________________________________________________
 JV2505* NAD 83(1986) POSITION- 39 29 13.     (N) 077 10 57.     (W)   SCALED
 JV2505* NAVD 88 ORTHO HEIGHT -   162.949 (meters)      534.61  (feet) ADJUSTED
 JV2505  ______________________________________________________________________
 JV2505  GEOID HEIGHT    -        -32.330 (meters)                     GEOID18
 JV2505  DYNAMIC HEIGHT  -        162.864 (meters)      534.33  (feet) COMP
 JV2505  MODELED GRAVITY -    980,100.6   (mgal)                       NAVD 88
 JV2505
 JV2505  VERT ORDER      -  SECOND    CLASS 0
 JV2505
 JV2505.The horizontal coordinates were scaled from a map and have
 JV2505.an estimated accuracy of +/- 6 seconds.
 JV2505
 JV2505.The orthometric height was determined by differential leveling and
 JV2505.adjusted by the NATIONAL GEODETIC SURVEY
 JV2505.in June 1991.
 JV2505
 JV2505.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2505.GEOID18 height accuracy estimate available here.
 JV2505
 JV2505.Click photographs - Photos may exist for this station.
 JV2505
 JV2505.The dynamic height is computed by dividing the NAVD 88
 JV2505.geopotential number by the normal gravity value computed on the
 JV2505.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2505.degrees latitude (g = 980.6199 gals.).
 JV2505
 JV2505.The modeled gravity was interpolated from observed gravity values.
 JV2505
 JV2505;                    North         East    Units  Estimated Accuracy
 JV2505;SPC MD       -   202,080.      384,300.      MT  (+/- 180 meters Scaled)
 JV2505
 JV2505_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ123730(NAD 83)
 JV2505
 JV2505                          SUPERSEDED SURVEY CONTROL
 JV2505
 JV2505  NGVD 29 (11/26/84)  163.154  (m)          535.28   (f) ADJUSTED    2 0
 JV2505
 JV2505.Superseded values are not recommended for survey control.
 JV2505
 JV2505.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2505.See file dsdata.pdf to determine how the superseded data were derived.
 JV2505
 JV2505_MARKER: DB = BENCH MARK DISK
 JV2505_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2505_STAMPING: A 93 1942
 JV2505_MARK LOGO: CGS
 JV2505_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2505+STABILITY: SURFACE MOTION
 JV2505
 JV2505  HISTORY     - Date     Condition        Report By
 JV2505  HISTORY     - 1942     MONUMENTED       CGS
 JV2505
 JV2505                          STATION DESCRIPTION
 JV2505
 JV2505'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2505'1 MI N FROM UNIONVILLE.
 JV2505'1.0 MILE NORTH ALONG THE UNION BRIDGE ROAD FROM THE COMMUNITY HALL
 JV2505'AT UNIONVILLE, FREDERICK COUNTY, AT THE JUNCTION OF A ROAD LEADING
 JV2505'EAST, 23.9 FEET EAST OF THE CENTER LINE OF THE MAIN ROAD, 15.5
 JV2505'FEET NORTH OF THE CENTER LINE OF THE SIDE ROAD, NEAR A WHITE
 JV2505'WOODEN WITNESS POST, AND ABOUT 4 FEET HIGHER THAN THE HIGHWAY,
 JV2505'AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2843 ***********************************************************************
 JV2843  DESIGNATION -  A 94
 JV2843  PID         -  JV2843
 JV2843  STATE/COUNTY-  MD/MONTGOMERY
 JV2843  COUNTRY     -  US
 JV2843  USGS QUAD   -  ROCKVILLE (2016)
 JV2843
 JV2843                         *CURRENT SURVEY CONTROL
 JV2843  ______________________________________________________________________
 JV2843* NAD 83(1986) POSITION- 39 04 25.     (N) 077 09 53.     (W)   SCALED
 JV2843* NAVD 88 ORTHO HEIGHT -   129.946 (meters)      426.33  (feet) ADJUSTED
 JV2843  ______________________________________________________________________
 JV2843  GEOID HEIGHT    -        -31.717 (meters)                     GEOID18
 JV2843  DYNAMIC HEIGHT  -        129.878 (meters)      426.11  (feet) COMP
 JV2843  MODELED GRAVITY -    980,102.2   (mgal)                       NAVD 88
 JV2843
 JV2843  VERT ORDER      -  FIRST     CLASS II
 JV2843
 JV2843.The horizontal coordinates were scaled from a map and have
 JV2843.an estimated accuracy of +/- 6 seconds.
 JV2843
 JV2843.The orthometric height was determined by differential leveling and
 JV2843.adjusted by the NATIONAL GEODETIC SURVEY
 JV2843.in June 1991.
 JV2843
 JV2843.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2843.GEOID18 height accuracy estimate available here.
 JV2843
 JV2843.Click photographs - Photos may exist for this station.
 JV2843
 JV2843.The dynamic height is computed by dividing the NAVD 88
 JV2843.geopotential number by the normal gravity value computed on the
 JV2843.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2843.degrees latitude (g = 980.6199 gals.).
 JV2843
 JV2843.The modeled gravity was interpolated from observed gravity values.
 JV2843
 JV2843;                    North         East    Units  Estimated Accuracy
 JV2843;SPC MD       -   156,190.      385,750.      MT  (+/- 180 meters Scaled)
 JV2843
 JV2843_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ127271(NAD 83)
 JV2843
 JV2843                          SUPERSEDED SURVEY CONTROL
 JV2843
 JV2843  NGVD 29 (11/26/84)  130.166  (m)          427.05   (f) ADJUSTED    1 2
 JV2843
 JV2843.Superseded values are not recommended for survey control.
 JV2843
 JV2843.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2843.See file dsdata.pdf to determine how the superseded data were derived.
 JV2843
 JV2843_MARKER: DB = BENCH MARK DISK
 JV2843_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2843_SP_SET: CULVERT
 JV2843_STAMPING: A 94 1944
 JV2843_MARK LOGO: CGS
 JV2843_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2843
 JV2843  HISTORY     - Date     Condition        Report By
 JV2843  HISTORY     - 1944     MONUMENTED       CGS
 JV2843
 JV2843                          STATION DESCRIPTION
 JV2843
 JV2843'DESCRIBED BY COAST AND GEODETIC SURVEY 1944
 JV2843'0.8 MI SW FROM ROCKVILLE.
 JV2843'0.8 MILE SOUTHWEST ON STATE HIGHWAY 189 FROM THE JUNCTION OF
 JV2843'STATE HIGHWAYS 28 AND 189 IN ROCKVILLE, MONTGOMERY COUNTY.  IN
 JV2843'THE HEADWALL OF A CONCRETE CULVERT.  14 FEET NORTHWEST OF THE
 JV2843'CENTER LINE OF THE ROAD, 36 FEET SOUTH OF TELEPHONE POLE NUMBER
 JV2843'35, AND 6 INCHES LOWER THAN THE ROAD.  A STANDARD DISK SET IN A
 JV2843'DRILL HOLE AND STAMPED A 94 1944.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2844 ***********************************************************************
 JV2844  DESIGNATION -  A 94 RESET 1956 MDBCSM
 JV2844  PID         -  JV2844
 JV2844  STATE/COUNTY-  MD/MONTGOMERY
 JV2844  COUNTRY     -  US
 JV2844  USGS QUAD   -  ROCKVILLE (2016)
 JV2844
 JV2844                         *CURRENT SURVEY CONTROL
 JV2844  ______________________________________________________________________
 JV2844* NAD 83(1986) POSITION- 39 04 25.     (N) 077 09 53.     (W)   SCALED
 JV2844* NAVD 88 ORTHO HEIGHT -   130.09  (meters)      426.8   (feet) RESET
 JV2844  ______________________________________________________________________
 JV2844  GEOID HEIGHT    -        -31.717 (meters)                     GEOID18
 JV2844  VERT ORDER      -  THIRD
 JV2844
 JV2844.The horizontal coordinates were scaled from a map and have
 JV2844.an estimated accuracy of +/- 6 seconds.
 JV2844
 JV2844.The orthometric height was computed from unverified reset data.
 JV2844
 JV2844.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2844.GEOID18 height accuracy estimate available here.
 JV2844
 JV2844.Click photographs - Photos may exist for this station.
 JV2844
 JV2844;                    North         East    Units  Estimated Accuracy
 JV2844;SPC MD       -   156,190.      385,750.      MT  (+/- 180 meters Scaled)
 JV2844
 JV2844_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ127271(NAD 83)
 JV2844
 JV2844                          SUPERSEDED SURVEY CONTROL
 JV2844
 JV2844  NGVD 29 (??/??/??)  130.31   (m)          427.5    (f) RESET       3  
 JV2844
 JV2844.Superseded values are not recommended for survey control.
 JV2844
 JV2844.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2844.See file dsdata.pdf to determine how the superseded data were derived.
 JV2844
 JV2844_MARKER: DD = SURVEY DISK
 JV2844_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2844_STAMPING: A 94 RESET 1956
 JV2844_MARK LOGO: MDBCSM
 JV2844_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2844+STABILITY: SURFACE MOTION
 JV2844
 JV2844  HISTORY     - Date     Condition        Report By
 JV2844  HISTORY     - 1956     MONUMENTED       MDBCSM
 JV2844
 JV2844                          STATION DESCRIPTION
 JV2844
 JV2844'DESCRIBED BY MD BUR SURV AND MAPS 1956
 JV2844'0.8 MI SW FROM ROCKVILLE.
 JV2844'TO REACH THIS STATION FROM JCT. MD. 28 AND MD. 189 IN ROCKVILLE,
 JV2844'PROCEED SOUTHWEST ON MD. 189, 0.8 MILE TO OVERPASS ON RIGHT,
 JV2844'MARK IS 1.0 FOOT NORTH OF THE SOUTH END OF THE FIRST PIER
 JV2844'APPROACHING FROM THE EAST.  A STANDARD DISK STAMPED A 94 RESET
 JV2844'1956 SET FLUSH IN CONCRETE.  NOTE-- THIS BENCH MARK WAS
 JV2844'ESTABLISHED AND ITS ELEVATION DETERMINED BY ENGINEERS OF THE
 JV2844'MARYLAND BUREAU OF CONTROL SURVEYS AND MAPS IN DECEMBER 1956.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0123 ***********************************************************************
 JV0123  DESIGNATION -  A 96
 JV0123  PID         -  JV0123
 JV0123  STATE/COUNTY-  MD/HARFORD
 JV0123  COUNTRY     -  US
 JV0123  USGS QUAD   -  ABERDEEN (2016)
 JV0123
 JV0123                         *CURRENT SURVEY CONTROL
 JV0123  ______________________________________________________________________
 JV0123* NAD 83(1986) POSITION- 39 32 08.     (N) 076 11 23.     (W)   SCALED
 JV0123* NAVD 88 ORTHO HEIGHT -    63.971 (meters)      209.88  (feet) ADJUSTED
 JV0123  ______________________________________________________________________
 JV0123  GEOID HEIGHT    -        -33.018 (meters)                     GEOID18
 JV0123  DYNAMIC HEIGHT  -         63.939 (meters)      209.77  (feet) COMP
 JV0123  MODELED GRAVITY -    980,128.2   (mgal)                       NAVD 88
 JV0123
 JV0123  VERT ORDER      -  SECOND    CLASS 0
 JV0123
 JV0123.The horizontal coordinates were scaled from a map and have
 JV0123.an estimated accuracy of +/- 6 seconds.
 JV0123
 JV0123.The orthometric height was determined by differential leveling and
 JV0123.adjusted by the NATIONAL GEODETIC SURVEY
 JV0123.in June 1991.
 JV0123
 JV0123.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0123.GEOID18 height accuracy estimate available here.
 JV0123
 JV0123.Click photographs - Photos may exist for this station.
 JV0123
 JV0123.The dynamic height is computed by dividing the NAVD 88
 JV0123.geopotential number by the normal gravity value computed on the
 JV0123.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0123.degrees latitude (g = 980.6199 gals.).
 JV0123
 JV0123.The modeled gravity was interpolated from observed gravity values.
 JV0123
 JV0123;                    North         East    Units  Estimated Accuracy
 JV0123;SPC MD       -   207,770.      469,660.      MT  (+/- 180 meters Scaled)
 JV0123
 JV0123_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ977768(NAD 83)
 JV0123
 JV0123                          SUPERSEDED SURVEY CONTROL
 JV0123
 JV0123  NGVD 29 (11/26/84)   64.228  (m)          210.72   (f) ADJUSTED    2 0
 JV0123
 JV0123.Superseded values are not recommended for survey control.
 JV0123
 JV0123.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0123.See file dsdata.pdf to determine how the superseded data were derived.
 JV0123
 JV0123_MARKER: DB = BENCH MARK DISK
 JV0123_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0123_SP_SET: BRIDGE
 JV0123_STAMPING: A 96 1959
 JV0123_MARK LOGO: CGS
 JV0123_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0123
 JV0123  HISTORY     - Date     Condition        Report By
 JV0123  HISTORY     - 1959     MONUMENTED       CGS
 JV0123  HISTORY     - 20020309 POOR             USPSQD
 JV0123
 JV0123                          STATION DESCRIPTION
 JV0123
 JV0123'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0123'2.8 MI N FROM ABERDEEN.
 JV0123'ABOUT 2.3 MILES NORTHWEST ALONG STATE HIGHWAY 22 FROM THE POST
 JV0123'OFFICE AT ABERDEEN, THENCE 0.5 MILE EAST ALONG GILBERT ROAD,
 JV0123'ON TOP OF THE EAST END OF THE NORTH CONCRETE HEADWALL OF A SMALL
 JV0123'BRIDGE OVER A CREEK, 23 FEET NORTH OF THE CENTER LINE OF THE
 JV0123'ROAD, 6 FEET WEST OF THE EAST END OF THE HEADWALL AND ABOUT 1
 JV0123'FOOT ABOVE THE LEVEL OF THE ROAD.
 JV0123
 JV0123                          STATION RECOVERY (2002)
 JV0123
 JV0123'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV0123'PARTIAL.  DISK IS GONE, POST REMAINS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1246 ***********************************************************************
 JV1246  DESIGNATION -  A 97
 JV1246  PID         -  JV1246
 JV1246  STATE/COUNTY-  MD/BALTIMORE
 JV1246  COUNTRY     -  US
 JV1246  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1246
 JV1246                         *CURRENT SURVEY CONTROL
 JV1246  ______________________________________________________________________
 JV1246* NAD 83(1986) POSITION- 39 24 36.     (N) 076 39 56.     (W)   SCALED
 JV1246* NAVD 88 ORTHO HEIGHT -    87.122 (meters)      285.83  (feet) ADJUSTED
 JV1246  ______________________________________________________________________
 JV1246  GEOID HEIGHT    -        -32.422 (meters)                     GEOID18
 JV1246  DYNAMIC HEIGHT  -         87.077 (meters)      285.69  (feet) COMP
 JV1246  MODELED GRAVITY -    980,104.2   (mgal)                       NAVD 88
 JV1246
 JV1246  VERT ORDER      -  SECOND    CLASS 0
 JV1246
 JV1246.The horizontal coordinates were scaled from a map and have
 JV1246.an estimated accuracy of +/- 6 seconds.
 JV1246
 JV1246.The orthometric height was determined by differential leveling and
 JV1246.adjusted by the NATIONAL GEODETIC SURVEY
 JV1246.in June 1991.
 JV1246
 JV1246.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1246.GEOID18 height accuracy estimate available here.
 JV1246
 JV1246.Click photographs - Photos may exist for this station.
 JV1246
 JV1246.The dynamic height is computed by dividing the NAVD 88
 JV1246.geopotential number by the normal gravity value computed on the
 JV1246.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1246.degrees latitude (g = 980.6199 gals.).
 JV1246
 JV1246.The modeled gravity was interpolated from observed gravity values.
 JV1246
 JV1246;                    North         East    Units  Estimated Accuracy
 JV1246;SPC MD       -   193,580.      428,800.      MT  (+/- 180 meters Scaled)
 JV1246
 JV1246_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ566635(NAD 83)
 JV1246
 JV1246                          SUPERSEDED SURVEY CONTROL
 JV1246
 JV1246  NGVD 29 (11/26/84)   87.342  (m)          286.55   (f) ADJUSTED    2 0
 JV1246
 JV1246.Superseded values are not recommended for survey control.
 JV1246
 JV1246.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1246.See file dsdata.pdf to determine how the superseded data were derived.
 JV1246
 JV1246_MARKER: DB = BENCH MARK DISK
 JV1246_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1246_STAMPING: A 97 1959
 JV1246_MARK LOGO: CGS
 JV1246_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1246+STABILITY: SURFACE MOTION
 JV1246
 JV1246  HISTORY     - Date     Condition        Report By
 JV1246  HISTORY     - 1959     MONUMENTED       CGS
 JV1246
 JV1246                          STATION DESCRIPTION
 JV1246
 JV1246'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1246'1.8 MI SW FROM LUTHERVILLE.
 JV1246'1.75 MILES SOUTHWEST ALONG THE BALTIMORE BELTWAY FROM ITS
 JV1246'INTERSECTION WITH NEW U.S. HIGHWAY 111 AT LUTHERVILLE, NEAR
 JV1246'THE INTERSECTION OF THE BELTWAY AND OLD COURT ROAD, 201 FEET
 JV1246'NORTHEAST OF THE CENTER LINE OF OLD COURT ROAD, 48 FEET NORTHWEST
 JV1246'OF THE CENTER LINE OF THE BELTWAY, 2 FEET NORTH OF A METAL
 JV1246'WITNESS POST, 3 FEET ABOVE THE LEVEL OF THE BELTWAY AND SET
 JV1246'IN THE TOP OF A CONCRETE POST PROJECTING 5 INCHES ABOVE THE
 JV1246'LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1247 ***********************************************************************
 JV1247  DESIGNATION -  A 97 RESET
 JV1247  PID         -  JV1247
 JV1247  STATE/COUNTY-  MD/BALTIMORE
 JV1247  COUNTRY     -  US
 JV1247  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1247
 JV1247                         *CURRENT SURVEY CONTROL
 JV1247  ______________________________________________________________________
 JV1247* NAD 83(1986) POSITION- 39 24 36.     (N) 076 39 56.     (W)   SCALED
 JV1247* NAVD 88 ORTHO HEIGHT -    87.69  (+/-2cm)      287.7   (feet) VERTCON3
 JV1247  ______________________________________________________________________
 JV1247  GEOID HEIGHT    -        -32.422 (meters)                     GEOID18
 JV1247  VERT ORDER      -  THIRD (See Below)
 JV1247
 JV1247.The horizontal coordinates were scaled from a map and have
 JV1247.an estimated accuracy of +/- 6 seconds.
 JV1247
 JV1247.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1247.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1247
 JV1247.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1247.GEOID18 height accuracy estimate available here.
 JV1247
 JV1247.The vertical order pertains to the NGVD 29 superseded value.
 JV1247
 JV1247.Click photographs - Photos may exist for this station.
 JV1247
 JV1247;                    North         East    Units  Estimated Accuracy
 JV1247;SPC MD       -   193,580.      428,800.      MT  (+/- 180 meters Scaled)
 JV1247
 JV1247_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ566635(NAD 83)
 JV1247
 JV1247                          SUPERSEDED SURVEY CONTROL
 JV1247
 JV1247  NGVD 29 (??/??/??)   87.91   (m)          288.4    (f) RESET       3  
 JV1247
 JV1247.Superseded values are not recommended for survey control.
 JV1247
 JV1247.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1247.See file dsdata.pdf to determine how the superseded data were derived.
 JV1247
 JV1247_MARKER: DB = BENCH MARK DISK
 JV1247_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1247_STAMPING: A 97 RESET 1961
 JV1247_MARK LOGO: CGS
 JV1247_PROJECTION: PROJECTING
 JV1247_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1247+STABILITY: SURFACE MOTION
 JV1247
 JV1247  HISTORY     - Date     Condition        Report By
 JV1247  HISTORY     - 1961     MONUMENTED       MDSRC
 JV1247
 JV1247                          STATION DESCRIPTION
 JV1247
 JV1247'DESCRIBED BY MD STATE ROADS COMM 1961
 JV1247'1.8 MI W FROM LUTHERVILLE.
 JV1247'THIS MARK IS LOCATED 1.8 MILES WEST OF LUTHERVILLE, AT THE
 JV1247'HIGH-SPEED INTERCHANGE OF THE JONES FALLS EXPRESSWAY AND BALTIMORE
 JV1247'BELTWAY.  TO REACH FROM THE JONES FALLS EXPRESSWAY BRIDGE
 JV1247'OVER MARYLAND ROUTE 25 (FALLS ROAD), PROCEED NORTH ALONG THE
 JV1247'EXPRESSWAY FOR 0.8 MILE TO RAMP BEARING EASTERLY, AND THE
 JV1247'STATION 160 FEET NORTH-NORTHEAST OF THE NORTHEAST EDGE OF CURB,
 JV1247'41.5 FEET EAST OF THE CENTERLINE OF RAMP AND 2.0 FEET WEST OF A
 JV1247'U.S.C. AND G.S. WITNESS SIGN, AND SET IN A CONCRETE POST
 JV1247'PROJECTING 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1248 ***********************************************************************
 JV1248  DESIGNATION -  A 97 RESET
 JV1248  PID         -  JV1248
 JV1248  STATE/COUNTY-  MD/BALTIMORE
 JV1248  COUNTRY     -  US
 JV1248  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1248
 JV1248                         *CURRENT SURVEY CONTROL
 JV1248  ______________________________________________________________________
 JV1248* NAD 83(1986) POSITION- 39 24 36.     (N) 076 39 56.     (W)   SCALED
 JV1248* NAVD 88 ORTHO HEIGHT -    89.328 (meters)      293.07  (feet) ADJUSTED
 JV1248  ______________________________________________________________________
 JV1248  GEOID HEIGHT    -        -32.422 (meters)                     GEOID18
 JV1248  DYNAMIC HEIGHT  -         89.281 (meters)      292.92  (feet) COMP
 JV1248  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV1248
 JV1248  VERT ORDER      -  SECOND    CLASS I
 JV1248
 JV1248.The horizontal coordinates were scaled from a map and have
 JV1248.an estimated accuracy of +/- 6 seconds.
 JV1248
 JV1248.The orthometric height was determined by differential leveling and
 JV1248.adjusted by the NATIONAL GEODETIC SURVEY
 JV1248.in June 2006.
 JV1248
 JV1248.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1248.GEOID18 height accuracy estimate available here.
 JV1248
 JV1248.Click photographs - Photos may exist for this station.
 JV1248
 JV1248.The dynamic height is computed by dividing the NAVD 88
 JV1248.geopotential number by the normal gravity value computed on the
 JV1248.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1248.degrees latitude (g = 980.6199 gals.).
 JV1248
 JV1248.The modeled gravity was interpolated from observed gravity values.
 JV1248
 JV1248;                    North         East    Units  Estimated Accuracy
 JV1248;SPC MD       -   193,580.      428,800.      MT  (+/- 180 meters Scaled)
 JV1248
 JV1248_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ566635(NAD 83)
 JV1248
 JV1248                          SUPERSEDED SURVEY CONTROL
 JV1248
 JV1248  NGVD 29 (??/??/??)   89.55   (m)          293.8    (f) RESET       3  
 JV1248
 JV1248.Superseded values are not recommended for survey control.
 JV1248
 JV1248.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1248.See file dsdata.pdf to determine how the superseded data were derived.
 JV1248
 JV1248_MARKER: DB = BENCH MARK DISK
 JV1248_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1248_STAMPING: A 97 RESET 1970
 JV1248_MARK LOGO: MDSRC
 JV1248_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1248_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1248+STABILITY: SURFACE MOTION
 JV1248
 JV1248  HISTORY     - Date     Condition        Report By
 JV1248  HISTORY     - 1970     MONUMENTED       MDSRC
 JV1248  HISTORY     - 19991124 GOOD             MDSHA
 JV1248
 JV1248                          STATION DESCRIPTION
 JV1248
 JV1248'DESCRIBED BY MD STATE ROADS COMM 1970
 JV1248'1.8 MI W FROM LUTHERVILLE.
 JV1248'LOCATED 1.8 MILES WEST OF LUTHERVILLE AT THE HIGH SPEED
 JV1248'INTERCHANGE OF JONES FALLS EXPRESSWAY AND THE BALTIMORE BELTWAY,
 JV1248'115.0 FEET EAST OF THE CENTERLINE OF THE RAMP, 2.0 FEET WEST
 JV1248'OF RIGHT OF WAY FENCE, 25.0 FEET SOUTH-SOUTHEAST OF A 4 IN GUM
 JV1248'TREE, 90.0 FEET EAST OF LAMP POST NO. 23 141 400, AND 2.0 FEET
 JV1248'SOUTH OF USC AND GS WITNESS POST.  A STANDARD DISK SET IN THE
 JV1248'TOP OF A CONCRETE POST PROJECTING 2 INCHES, STAMPED A 97 RESET
 JV1248'1970.  TO REACH FROM THE JONES FALLS EXPRESSWAY BRIDGE OVER
 JV1248'MARYLAND HIGHWAY NO. 25, GO NORTH FOR 0.8 MILE TO A RAMP LEADING
 JV1248'NORTHEASTERLY TO THE BALTIMORE BELTWAY AND THE MARK ON THE RIGHT.
 JV1248
 JV1248                          STATION RECOVERY (1999)
 JV1248
 JV1248'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999
 JV1248'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0203 ***********************************************************************
 JV0203  DESIGNATION -  A 98
 JV0203  PID         -  JV0203
 JV0203  STATE/COUNTY-  MD/HARFORD
 JV0203  COUNTRY     -  US
 JV0203  USGS QUAD   -  BEL AIR (2016)
 JV0203
 JV0203                         *CURRENT SURVEY CONTROL
 JV0203  ______________________________________________________________________
 JV0203* NAD 83(1986) POSITION- 39 32 08.7    (N) 076 20 55.9    (W)   HD_HELD2
 JV0203* NAVD 88 ORTHO HEIGHT -   120.836 (meters)      396.44  (feet) ADJUSTED
 JV0203  ______________________________________________________________________
 JV0203  GEOID HEIGHT    -        -32.775 (meters)                     GEOID18
 JV0203  DYNAMIC HEIGHT  -        120.775 (meters)      396.24  (feet) COMP
 JV0203  MODELED GRAVITY -    980,119.1   (mgal)                       NAVD 88
 JV0203
 JV0203  VERT ORDER      -  FIRST     CLASS II
 JV0203
 JV0203.The horizontal coordinates were established by autonomous hand held GPS
 JV0203.observations and have an estimated accuracy of +/- 10 meters.
 JV0203
 JV0203.The orthometric height was determined by differential leveling and
 JV0203.adjusted by the NATIONAL GEODETIC SURVEY
 JV0203.in June 1991.
 JV0203
 JV0203.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0203.GEOID18 height accuracy estimate available here.
 JV0203
 JV0203.Click photographs - Photos may exist for this station.
 JV0203
 JV0203.The dynamic height is computed by dividing the NAVD 88
 JV0203.geopotential number by the normal gravity value computed on the
 JV0203.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0203.degrees latitude (g = 980.6199 gals.).
 JV0203
 JV0203.The modeled gravity was interpolated from observed gravity values.
 JV0203
 JV0203;                    North         East    Units  Estimated Accuracy
 JV0203;SPC MD       -   207,684.      455,978.      MT  (+/- 10 meters HH2 GPS)
 JV0203
 JV0203_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8408377100(NAD 83)
 JV0203
 JV0203                          SUPERSEDED SURVEY CONTROL
 JV0203
 JV0203  NGVD 29 (11/26/84)  121.082  (m)          397.25   (f) ADJUSTED    1 2
 JV0203
 JV0203.Superseded values are not recommended for survey control.
 JV0203
 JV0203.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0203.See file dsdata.pdf to determine how the superseded data were derived.
 JV0203
 JV0203_MARKER: DB = BENCH MARK DISK
 JV0203_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 JV0203_SP_SET: FOUNDATION
 JV0203_STAMPING: A 98 1959
 JV0203_MARK LOGO: CGS
 JV0203_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV0203+STABILITY: POSITION/ELEVATION WELL
 JV0203_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0203+SATELLITE: SATELLITE OBSERVATIONS - January 21, 2020
 JV0203
 JV0203  HISTORY     - Date     Condition        Report By
 JV0203  HISTORY     - 1959     MONUMENTED       CGS
 JV0203  HISTORY     - 1960     GOOD             CGS
 JV0203  HISTORY     - 1987     GOOD             USPSQD
 JV0203  HISTORY     - 19891011 GOOD             NGS
 JV0203  HISTORY     - 19991226 GOOD             USPSQD
 JV0203  HISTORY     - 20011210 GOOD             NGS
 JV0203  HISTORY     - 20041016 GOOD             GEOCAC
 JV0203  HISTORY     - 20140520 GOOD             RODCON
 JV0203  HISTORY     - 20200121 GOOD             WTBALL
 JV0203
 JV0203                          STATION DESCRIPTION
 JV0203
 JV0203'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0203'AT BEL AIR.
 JV0203'AT BEL AIR, SET VERTICALLY IN THE EAST BRICK FACE OF COURTHOUSE
 JV0203'BUILDING, 0.9 FOOT SOUTH OF THE NORTHEAST CORNER OF BUILDING, AND
 JV0203'3.9 FEET ABOVE THE LEVEL OF THE SIDEWALK.
 JV0203
 JV0203                          STATION RECOVERY (1987)
 JV0203
 JV0203'RECOVERY NOTE BY US POWER SQUADRON 1987 (RB)
 JV0203'RECOVERED IN GOOD CONDITION.
 JV0203
 JV0203                          STATION RECOVERY (1989)
 JV0203
 JV0203'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0203'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN BEL AIR,
 JV0203'AT THE INTERSECTION OF OFFICE AND MAIN STREETS, SET VERTICALLY IN THE
 JV0203'NORTHEAST FACE OF THE COURTHOUSE, 26.4 M (86.6 FT) SOUTHWEST OF THE
 JV0203'CENTER OF MAIN STREET, 9.2 M (30.2 FT) SOUTHEAST OF THE CENTER OF
 JV0203'OFFICE STREET, 1.8 M (5.9 FT) ABOVE THE LEVEL OF MAIN STREET, 1.0 M
 JV0203'(3.3 FT) ABOVE THE GROUND SURFACE, AND 0.2 M (0.7 FT) SOUTHEAST OF
 JV0203'THE NORTH CORNER OF THE BUILDING.
 JV0203
 JV0203                          STATION RECOVERY (1999)
 JV0203
 JV0203'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV0203'RECOVERED IN GOOD CONDITION.
 JV0203
 JV0203                          STATION RECOVERY (2001)
 JV0203
 JV0203'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV0203'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV0203
 JV0203                          STATION RECOVERY (2004)
 JV0203
 JV0203'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV0203'RECOVERED IN GOOD CONDITION.
 JV0203
 JV0203                          STATION RECOVERY (2014)
 JV0203
 JV0203'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV0203'RECOVERED IN GOOD CONDITION.
 JV0203
 JV0203                          STATION RECOVERY (2020)
 JV0203
 JV0203'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV0203'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0215 ***********************************************************************
 JV0215  DESIGNATION -  A 99
 JV0215  PID         -  JV0215
 JV0215  STATE/COUNTY-  MD/HARFORD
 JV0215  COUNTRY     -  US
 JV0215  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0215
 JV0215                         *CURRENT SURVEY CONTROL
 JV0215  ______________________________________________________________________
 JV0215* NAD 83(1986) POSITION- 39 34 46.     (N) 076 24 58.     (W)   SCALED
 JV0215* NAVD 88 ORTHO HEIGHT -   153.490 (meters)      503.58  (feet) ADJUSTED
 JV0215  ______________________________________________________________________
 JV0215  GEOID HEIGHT    -        -32.626 (meters)                     GEOID18
 JV0215  DYNAMIC HEIGHT  -        153.412 (meters)      503.32  (feet) COMP
 JV0215  MODELED GRAVITY -    980,109.4   (mgal)                       NAVD 88
 JV0215
 JV0215  VERT ORDER      -  SECOND    CLASS 0
 JV0215
 JV0215.The horizontal coordinates were scaled from a map and have
 JV0215.an estimated accuracy of +/- 6 seconds.
 JV0215
 JV0215.The orthometric height was determined by differential leveling and
 JV0215.adjusted by the NATIONAL GEODETIC SURVEY
 JV0215.in June 1991.
 JV0215
 JV0215.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0215.GEOID18 height accuracy estimate available here.
 JV0215
 JV0215.Click photographs - Photos may exist for this station.
 JV0215
 JV0215.The dynamic height is computed by dividing the NAVD 88
 JV0215.geopotential number by the normal gravity value computed on the
 JV0215.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0215.degrees latitude (g = 980.6199 gals.).
 JV0215
 JV0215.The modeled gravity was interpolated from observed gravity values.
 JV0215
 JV0215;                    North         East    Units  Estimated Accuracy
 JV0215;SPC MD       -   212,500.      450,170.      MT  (+/- 180 meters Scaled)
 JV0215
 JV0215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ783820(NAD 83)
 JV0215
 JV0215                          SUPERSEDED SURVEY CONTROL
 JV0215
 JV0215  NGVD 29 (11/26/84)  153.732  (m)          504.37   (f) ADJUSTED    2 0
 JV0215
 JV0215.Superseded values are not recommended for survey control.
 JV0215
 JV0215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0215.See file dsdata.pdf to determine how the superseded data were derived.
 JV0215
 JV0215_MARKER: DB = BENCH MARK DISK
 JV0215_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0215_STAMPING: A 99 1960
 JV0215_MARK LOGO: CGS
 JV0215_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0215+STABILITY: SURFACE MOTION
 JV0215
 JV0215  HISTORY     - Date     Condition        Report By
 JV0215  HISTORY     - 1960     MONUMENTED       CGS
 JV0215
 JV0215                          STATION DESCRIPTION
 JV0215
 JV0215'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0215'1.8 MI W FROM FOREST HILL.
 JV0215'ABOUT 1.75 MILES WEST ALONG STATE HIGHWAY 23 FROM THE STATE
 JV0215'BANK AT FOREST HILL, ABOUT 0.35 MILE EAST OF FAIRVIEW CHURCH AND
 JV0215'CEMETERY, ABOUT 0.1 MILE NORTH OF A LARGE FRAME HOUSE AND BARN,
 JV0215'41 FEET SOUTH OF THE CENTER LINE OF HIGHWAY, 15 FEET WEST OF THE
 JV0215'CENTER LINE OF DRIVEWAY LEADING SOUTH TO HOUSE, 54 FEET SOUTHEAST
 JV0215'OF A TELEPHONE CABLE POLE, 22 FEET SOUTH OF A FENCE CORNER, 1
 JV0215'FOOT EAST OF THE FENCE LINE, 50 FEET NORTHEAST OF A LONE 54-INCH
 JV0215'LONE OAK TREE, 2 FEET SOUTH OF A STEEL WITNESS POST, ABOUT 2 FEET
 JV0215'BELOW THE LEVEL OF HIGHWAY, AND SET IN TOP OF A CONCRETE POST
 JV0215'PROJECTING 3 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0859 ***********************************************************************
 HV0859  DESIGNATION -  A MDSRC
 HV0859  PID         -  HV0859
 HV0859  STATE/COUNTY-  MD/CHARLES
 HV0859  COUNTRY     -  US
 HV0859  USGS QUAD   -  LA PLATA (2016)
 HV0859
 HV0859                         *CURRENT SURVEY CONTROL
 HV0859  ______________________________________________________________________
 HV0859* NAD 83(1986) POSITION- 38 30 11.     (N) 076 57 35.     (W)   SCALED
 HV0859* NAVD 88 ORTHO HEIGHT -    27.484 (meters)       90.17  (feet) ADJUSTED
 HV0859  ______________________________________________________________________
 HV0859  GEOID HEIGHT    -        -33.157 (meters)                     GEOID18
 HV0859  DYNAMIC HEIGHT  -         27.467 (meters)       90.11  (feet) COMP
 HV0859  MODELED GRAVITY -    980,021.3   (mgal)                       NAVD 88
 HV0859
 HV0859  VERT ORDER      -  SECOND    CLASS 0
 HV0859
 HV0859.The horizontal coordinates were scaled from a map and have
 HV0859.an estimated accuracy of +/- 6 seconds.
 HV0859
 HV0859.The orthometric height was determined by differential leveling and
 HV0859.adjusted by the NATIONAL GEODETIC SURVEY
 HV0859.in June 1991.
 HV0859
 HV0859.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0859.GEOID18 height accuracy estimate available here.
 HV0859
 HV0859.Click photographs - Photos may exist for this station.
 HV0859
 HV0859.The dynamic height is computed by dividing the NAVD 88
 HV0859.geopotential number by the normal gravity value computed on the
 HV0859.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0859.degrees latitude (g = 980.6199 gals.).
 HV0859
 HV0859.The modeled gravity was interpolated from observed gravity values.
 HV0859
 HV0859;                    North         East    Units  Estimated Accuracy
 HV0859;SPC MD       -    92,840.      403,510.      MT  (+/- 180 meters Scaled)
 HV0859
 HV0859_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH291634(NAD 83)
 HV0859
 HV0859                          SUPERSEDED SURVEY CONTROL
 HV0859
 HV0859  NGVD 29 (11/26/84)   27.713  (m)           90.92   (f) ADJUSTED    2 0
 HV0859
 HV0859.Superseded values are not recommended for survey control.
 HV0859
 HV0859.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0859.See file dsdata.pdf to determine how the superseded data were derived.
 HV0859
 HV0859_MARKER: Z = SEE DESCRIPTION
 HV0859_SETTING: 0 = UNSPECIFIED SETTING
 HV0859_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0859
 HV0859  HISTORY     - Date     Condition        Report By
 HV0859  HISTORY     - UNK      MONUMENTED       MDSRC
 HV0859  HISTORY     - 1969     GOOD             CGS
 HV0859
 HV0859                          STATION DESCRIPTION
 HV0859
 HV0859'DESCRIBED BY COAST AND GEODETIC SURVEY 1969
 HV0859'7 MI S FROM LA PLATA.
 HV0859'ABOUT 0.7 MILE SOUTH ALONG U.S. 301 FROM LA PLATA TO A COUNTY
 HV0859'ROAD EAST (SPRING-HILL-NEWTON ROAD) THENCE 0.65 MILE EAST ALONG
 HV0859'THE COUNTY ROAD TO A T-INTERSECTION, 42.0 FEET SOUTH OF THE
 HV0859'CENTER LINE OF THE COUNTY ROAD, 62.1 FEET SOUTHEAST OF POWER
 HV0859'POLE 30, 35.3 FEET EAST OF A 20-INCH BIRCH TREE AND 35.5 FEET
 HV0859'NORTHEAST OF THE EDGE OF A STREAM. NOTE-- MARK TYPE UNSPECIFIED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5386 ***********************************************************************
 JV5386  DESIGNATION -  A POINT 1961
 JV5386  PID         -  JV5386
 JV5386  STATE/COUNTY-  MD/BALTIMORE
 JV5386  COUNTRY     -  US
 JV5386  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5386
 JV5386                         *CURRENT SURVEY CONTROL
 JV5386  ______________________________________________________________________
 JV5386* NAD 83(1991) POSITION- 39 19 10.08434(N) 076 24 26.17804(W)   ADJUSTED
 JV5386* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 JV5386  ______________________________________________________________________
 JV5386  GEOID HEIGHT    -        -33.050 (meters)                     GEOID18
 JV5386  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 JV5386  HORZ ORDER      -  SECOND
 JV5386
 JV5386.The horizontal coordinates were established by classical geodetic methods
 JV5386.and adjusted by the National Geodetic Survey in January 1992.
 JV5386
 JV5386.The orthometric height was scaled from a topographic map.
 JV5386
 JV5386.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5386.GEOID18 height accuracy estimate available here.
 JV5386
 JV5386.Click photographs - Photos may exist for this station.
 JV5386
 JV5386.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5386
 JV5386. The following values were computed from the NAD 83(1991) position.
 JV5386
 JV5386;                    North         East     Units Scale Factor Converg.
 JV5386;SPC MD       -   183,637.700   451,112.834   MT  0.99997977   +0 22 19.3
 JV5386;SPC MD       -   602,484.69  1,480,026.02   sFT  0.99997977   +0 22 19.3
 JV5386;UTM  18      - 4,353,173.350   378,689.325   MT  0.99978119   -0 53 30.5
 JV5386
 JV5386!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5386!SPC MD       -   1.00000460  x   0.99997977  =   0.99998437
 JV5386!UTM  18      -   1.00000460  x   0.99978119  =   0.99978579
 JV5386
 JV5386:                Primary Azimuth Mark                     Grid Az
 JV5386:SPC MD       -  MIRE                                     331 29 40.0
 JV5386:UTM  18      -  MIRE                                     332 45 29.8
 JV5386
 JV5386_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7868953173(NAD 83)
 JV5386
 JV5386|---------------------------------------------------------------------|
 JV5386| PID    Reference Object                     Distance      Geod. Az  |
 JV5386|                                                           dddmmss.s |
 JV5386| JV5331 BALTIMORE GAS CRANE STA STACK       APPROX. 3.7 KM 0824550.8 |
 JV5386| JV5390 32 B 1961                           150.706 METERS 13128     |
 JV5386| JV5400 FLIGHT TEST MARTIN CO 202           278.696 METERS 23307     |
 JV5386| JV5380 MIRE                                APPROX. 1.2 KM 3315159.3 |
 JV5386|---------------------------------------------------------------------|
 JV5386
 JV5386                          SUPERSEDED SURVEY CONTROL
 JV5386
 JV5386  NAD 83(1986)-  39 19 10.07577(N)    076 24 26.19021(W) AD(       ) 2
 JV5386  NAD 27      -  39 19 09.69340(N)    076 24 27.33430(W) AD(       ) 2
 JV5386
 JV5386.Superseded values are not recommended for survey control.
 JV5386
 JV5386.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5386.See file dsdata.pdf to determine how the superseded data were derived.
 JV5386
 JV5386_MARKER: I = METAL ROD
 JV5386_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV5386_SP_SET: OBJECT DRIVEN INTO GROUND
 JV5386_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5386
 JV5386  HISTORY     - Date     Condition        Report By
 JV5386  HISTORY     - 1961     MONUMENTED       CGS
 JV5386  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV5386
 JV5386                          STATION DESCRIPTION
 JV5386
 JV5386'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JV5386'THE STATION IS LOCATED IN THE VICINITY OF STRAWBERRY POINT, IN A
 JV5386'GRASSY SECTION ABOUT 500.0 FEET EAST OF THE STRAWBERRY POINT GATE
 JV5386'ENTRANCE, ABOUT 500.0 FEET NORTHEAST OF THE NORTHEAST CORNER OF
 JV5386'THE STORAGE BUILDING, ABOUT 750.0 FEET WEST OF THE SOUTHEAST END
 JV5386'OF THE MAIN RUNWAY, ABOUT 300.0 FEET SOUTHWEST OF THE MAIN RUNWAY
 JV5386'AND 204.6 FEET NORTHEAST OF A RED FIRE ALARM POST AND BOX NUMBER 1.
 JV5386'
 JV5386'THE STATION MARK IS A 3/4 IN BY 4-1/2 FT STEEL PIPE DRIVEN IN THE
 JV5386'GROUND WITH ABOUT 1 INCHES PROJECTING FROM THE GROUND SURFACE.
 JV5386'IT IS STAMPED A WITH A CENTER PUNCH HOLE IN THE APPROXIMATE
 JV5386'CENTER OF THE STEEL ROD.
 JV5386'
 JV5386'HEIGHT OF LIGHT ABOVE STATION MARK 1.29 METERS.
 JV5386
 JV5386                          STATION RECOVERY (1994)
 JV5386
 JV5386'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5386'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4154 ***********************************************************************
 JU4154  DESIGNATION -  A POINT MDSHA
 JU4154  PID         -  JU4154
 JU4154  STATE/COUNTY-  MD/CECIL
 JU4154  COUNTRY     -  US
 JU4154  USGS QUAD   -  NEWARK WEST (2016)
 JU4154
 JU4154                         *CURRENT SURVEY CONTROL
 JU4154  ______________________________________________________________________
 JU4154* NAD 83(1991) POSITION- 39 39 45.48360(N) 075 47 22.04266(W)   ADJUSTED
 JU4154* NAVD 88 ORTHO HEIGHT -    39.6   (meters)      130.    (feet) VERTCON3
 JU4154  ______________________________________________________________________
 JU4154  GEOID HEIGHT    -        -33.040 (meters)                     GEOID18
 JU4154  LAPLACE CORR    -          1.11  (seconds)                    DEFLEC18
 JU4154  HORZ ORDER      -  THIRD
 JU4154
 JU4154.The horizontal coordinates were established by classical geodetic methods
 JU4154.and adjusted by the National Geodetic Survey in January 1992.
 JU4154
 JU4154.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU4154.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU4154
 JU4154.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4154.GEOID18 height accuracy estimate available here.
 JU4154
 JU4154.Click photographs - Photos may exist for this station.
 JU4154
 JU4154.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4154
 JU4154. The following values were computed from the NAD 83(1991) position.
 JU4154
 JU4154;                    North         East     Units Scale Factor Converg.
 JU4154;SPC MD       -   222,260.893   503,881.459   MT  1.00004412   +0 45 35.2
 JU4154;SPC MD       -   729,200.95  1,653,151.09   sFT  1.00004412   +0 45 35.2
 JU4154;SPC PA S     -    38,431.735   768,234.537   MT  1.00005335   +1 16 19.2
 JU4154;SPC PA S     -   126,088.12  2,520,449.48   sFT  1.00005335   +1 16 19.2
 JU4154;UTM  18      - 4,390,611.805   432,281.388   MT  0.99965646   -0 30 14.0
 JU4154
 JU4154!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4154!SPC MD       -   0.99999896  x   1.00004412  =   1.00004308
 JU4154!SPC PA S     -   0.99999896  x   1.00005335  =   1.00005231
 JU4154!UTM  18      -   0.99999896  x   0.99965646  =   0.99965542
 JU4154
 JU4154_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3228190611(NAD 83)
 JU4154
 JU4154                          SUPERSEDED SURVEY CONTROL
 JU4154
 JU4154  NAD 83(1986)-  39 39 45.47758(N)    075 47 22.04924(W) AD(       ) 3
 JU4154  NGVD 29 (03/25/91)   40.0    (m)          131.     (f) VERT ANG       
 JU4154
 JU4154.Superseded values are not recommended for survey control.
 JU4154
 JU4154.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4154.See file dsdata.pdf to determine how the superseded data were derived.
 JU4154
 JU4154_MARKER: I = METAL ROD
 JU4154_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JU4154_SP_SET: DRIVEN INTO GROUND
 JU4154_MARK LOGO: MDSHA
 JU4154_MAGNETIC: I = MARKER IS A STEEL ROD
 JU4154_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4154
 JU4154  HISTORY     - Date     Condition        Report By
 JU4154  HISTORY     - 1986     MONUMENTED       MDSHA
 JU4154
 JU4154                          STATION DESCRIPTION
 JU4154
 JU4154'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1986
 JU4154'THE STATION IS LOCATED ABOUT 4.0 KM (2.50 MI) SOUTHWEST OF NEWARK,
 JU4154'3.25 KM (2.00 MI) EAST-SOUTHEAST OF ELK MILLS AND ON A LOW HILL
 JU4154'OVERLOOKING AN ORCHARD.  OWNERSHIP--E.I. DUPONT COMPANY INCORPORATED.
 JU4154'THIS STATION CAN EASILY BE LOCATED BY FOLLOWING THE TO REACH FOR
 JU4154'BOUNDARY MONUMENT NO. 83.
 JU4154'THE STATION IS A MARYLAND STATE HIGHWAY ADMINISTRATION MARK.  IT IS AN
 JU4154'IRON PIN WITH A YELLOW CAP.  IT IS DRIVEN INTO THE GROUND AND IS FLUSH
 JU4154'WITH THE SURFACE OF THE GROUND.  IT IS 83.7 M (274.6 FT) SOUTHWEST OF
 JU4154'BOUNDARY MONUMENT NO. 83, 317.8 M (1042.6 FT) NORTH OF ARC STONE 3,
 JU4154'9.0 M (29.5 FT) SOUTH OF A FIELD ROAD AND ABOUT 15.2 M (49.9 FT) SOUTH
 JU4154'OF A VINYARD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4260 ***********************************************************************
 JU4260  DESIGNATION -  A T 2
 JU4260  PID         -  JU4260
 JU4260  STATE/COUNTY-  MD/CECIL
 JU4260  COUNTRY     -  US
 JU4260  USGS QUAD   -  BAY VIEW (2016)
 JU4260
 JU4260                         *CURRENT SURVEY CONTROL
 JU4260  ______________________________________________________________________
 JU4260* NAD 83(2011) POSITION- 39 38 34.12917(N) 075 53 50.44319(W)   ADJUSTED
 JU4260* NAD 83(2011) ELLIP HT-    28.288 (meters)        (06/27/12)   ADJUSTED
 JU4260* NAD 83(2011) EPOCH   -  2010.00
 JU4260* NAVD 88 ORTHO HEIGHT -    61.384 (meters)      201.39  (feet) ADJUSTED
 JU4260  ______________________________________________________________________
 JU4260  GEOID HEIGHT    -        -33.097 (meters)                     GEOID18
 JU4260  NAD 83(2011) X  -  1,198,350.504 (meters)                     COMP
 JU4260  NAD 83(2011) Y  - -4,769,897.962 (meters)                     COMP
 JU4260  NAD 83(2011) Z  -  4,047,543.932 (meters)                     COMP
 JU4260  LAPLACE CORR    -         -0.35  (seconds)                    DEFLEC18
 JU4260  DYNAMIC HEIGHT  -         61.353 (meters)      201.29  (feet) COMP
 JU4260  MODELED GRAVITY -    980,135.7   (mgal)                       NAVD 88
 JU4260
 JU4260  VERT ORDER      -  SECOND    CLASS I
 JU4260
 JU4260  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4260  Standards:
 JU4260         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4260            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4260  -------------------------------------------------------------------
 JU4260  NETWORK    1.87   3.76           0.77   0.74   1.92      0.31386258
 JU4260  -------------------------------------------------------------------
 JU4260  Click here for local accuracies and other accuracy information.
 JU4260
 JU4260.The horizontal coordinates were established by GPS observations
 JU4260.and adjusted by the National Geodetic Survey in June 2012.
 JU4260
 JU4260.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4260.been affixed to the stable North American tectonic plate. See 
 JU4260.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4260
 JU4260.The horizontal coordinates are valid at the epoch date displayed above
 JU4260.which is a decimal equivalence of Year/Month/Day.
 JU4260
 JU4260.The orthometric height was determined by differential leveling and
 JU4260.adjusted by the NATIONAL GEODETIC SURVEY
 JU4260.in June 1995.
 JU4260
 JU4260.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4260.GEOID18 height accuracy estimate available here.
 JU4260
 JU4260.Click photographs - Photos may exist for this station.
 JU4260
 JU4260.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4260
 JU4260.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4260
 JU4260.The ellipsoidal height was determined by GPS observations
 JU4260.and is referenced to NAD 83.
 JU4260
 JU4260.The dynamic height is computed by dividing the NAVD 88
 JU4260.geopotential number by the normal gravity value computed on the
 JU4260.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4260.degrees latitude (g = 980.6199 gals.).
 JU4260
 JU4260.The modeled gravity was interpolated from observed gravity values.
 JU4260
 JU4260. The following values were computed from the NAD 83(2011) position.
 JU4260
 JU4260;                    North         East     Units Scale Factor Converg.
 JU4260;SPC MD       -   219,943.011   494,650.136   MT  1.00003942   +0 41 31.4
 JU4260;SPC MD       -   721,596.36  1,622,864.65   sFT  1.00003942   +0 41 31.4
 JU4260;UTM  18      - 4,388,498.943   423,004.675   MT  0.99967299   -0 34 21.1
 JU4260
 JU4260!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4260!SPC MD       -   0.99999556  x   1.00003942  =   1.00003498
 JU4260!UTM  18      -   0.99999556  x   0.99967299  =   0.99966855
 JU4260
 JU4260_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2300488498(NAD 83)
 JU4260
 JU4260|---------------------------------------------------------------------|
 JU4260| PID    Reference Object                     Distance      Geod. Az  |
 JU4260|                                                           dddmmss.s |
 JU4260| JU4259 A TEAM                              393.551 METERS 24742     |
 JU4260|---------------------------------------------------------------------|
 JU4260
 JU4260                          SUPERSEDED SURVEY CONTROL
 JU4260
 JU4260  NAD 83(2007)-  39 38 34.12953(N)    075 53 50.44399(W) AD(2002.00) 0
 JU4260  ELLIP H (02/10/07)   28.318  (m)                       GP(2002.00)    
 JU4260  ELLIP H (08/30/02)   28.324  (m)                       GP(       ) 4 2
 JU4260  NAD 83(1991)-  39 38 34.12948(N)    075 53 50.44446(W) AD(       ) 1
 JU4260  ELLIP H (09/15/92)   28.339  (m)                       GP(       ) 4 1
 JU4260  NGVD 29 (09/15/92)   61.7    (m)  GEOID90  model used  GPS OBS        
 JU4260
 JU4260.Superseded values are not recommended for survey control.
 JU4260
 JU4260.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4260.See file dsdata.pdf to determine how the superseded data were derived.
 JU4260
 JU4260_MARKER: DD = SURVEY DISK
 JU4260_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4260_STAMPING: A.T.-2
 JU4260_MARK LOGO: MDSHA
 JU4260_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4260_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4260+STABILITY: SURFACE MOTION
 JU4260_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4260+SATELLITE: SATELLITE OBSERVATIONS - 1991
 JU4260
 JU4260  HISTORY     - Date     Condition        Report By
 JU4260  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4260
 JU4260                          STATION DESCRIPTION
 JU4260
 JU4260'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4260'THE MARKER IS LOCATED ABOUT 46 MI (74.0 KM) NORTHEAST OF BALTIMORE,
 JU4260'3.6 MI (5.8 KM) NORTHWEST OF ELKTON AND ALONG THE SOUTHBOUND LANE OF
 JU4260'INTERSTATE HIGHWAY 95.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE
 JU4260'MARKER FROM A POINT WHERE DEAVER ROAD PASSES OVER INTERSTATE HIGHWAY
 JU4260'95, GO SOUTH ON INTERSTATE HIGHWAY 95 FOR 0.3 MI (0.5 KM) TO MARK ON
 JU4260'THE RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN
 JU4260'THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS FLUSH
 JU4260'WITH THE SURFACE OF THE GROUND.  IT IS 28.0 FT (8.5 M) NORTHWEST OF
 JU4260'THE NORTHWEST EDGE OF THE MOST NORTHWEST PAVED SHOULDER ALONG THE
 JU4260'SOUTHBOUND LANE OF INTERSTATE HIGHWAY 95, 52.5 FT (16.0 M) NORTHWEST
 JU4260'OF THE WEST END POST OF A GUARDRAIL AND 65.5 FT (20.0 M) SOUTH OF A
 JU4260'T-INTERSECTION IN A 4-FOOT HIGH FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4259 ***********************************************************************
 JU4259  DESIGNATION -  A TEAM
 JU4259  PID         -  JU4259
 JU4259  STATE/COUNTY-  MD/CECIL
 JU4259  COUNTRY     -  US
 JU4259  USGS QUAD   -  BAY VIEW (2016)
 JU4259
 JU4259                         *CURRENT SURVEY CONTROL
 JU4259  ______________________________________________________________________
 JU4259* NAD 83(2011) POSITION- 39 38 29.28677(N) 075 54 05.71390(W)   ADJUSTED
 JU4259* NAD 83(2011) ELLIP HT-    30.093 (meters)        (06/27/12)   ADJUSTED
 JU4259* NAD 83(2011) EPOCH   -  2010.00
 JU4259* NAVD 88 ORTHO HEIGHT -    63.204 (meters)      207.36  (feet) ADJUSTED
 JU4259  ______________________________________________________________________
 JU4259  GEOID HEIGHT    -        -33.099 (meters)                     GEOID18
 JU4259  NAD 83(2011) X  -  1,198,020.912 (meters)                     COMP
 JU4259  NAD 83(2011) Y  - -4,770,080.427 (meters)                     COMP
 JU4259  NAD 83(2011) Z  -  4,047,430.081 (meters)                     COMP
 JU4259  LAPLACE CORR    -         -0.35  (seconds)                    DEFLEC18
 JU4259  DYNAMIC HEIGHT  -         63.173 (meters)      207.26  (feet) COMP
 JU4259  MODELED GRAVITY -    980,135.3   (mgal)                       NAVD 88
 JU4259
 JU4259  VERT ORDER      -  SECOND    CLASS I
 JU4259
 JU4259  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4259  Standards:
 JU4259         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4259            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4259  -------------------------------------------------------------------
 JU4259  NETWORK    1.74   3.51           0.72   0.68   1.79      0.30546318
 JU4259  -------------------------------------------------------------------
 JU4259  Click here for local accuracies and other accuracy information.
 JU4259
 JU4259.The horizontal coordinates were established by GPS observations
 JU4259.and adjusted by the National Geodetic Survey in June 2012.
 JU4259
 JU4259.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4259.been affixed to the stable North American tectonic plate. See 
 JU4259.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4259
 JU4259.The horizontal coordinates are valid at the epoch date displayed above
 JU4259.which is a decimal equivalence of Year/Month/Day.
 JU4259
 JU4259.The orthometric height was determined by differential leveling and
 JU4259.adjusted by the NATIONAL GEODETIC SURVEY
 JU4259.in June 1995.
 JU4259
 JU4259.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4259.GEOID18 height accuracy estimate available here.
 JU4259
 JU4259.Click photographs - Photos may exist for this station.
 JU4259
 JU4259.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4259
 JU4259.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4259
 JU4259.The ellipsoidal height was determined by GPS observations
 JU4259.and is referenced to NAD 83.
 JU4259
 JU4259.The dynamic height is computed by dividing the NAVD 88
 JU4259.geopotential number by the normal gravity value computed on the
 JU4259.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4259.degrees latitude (g = 980.6199 gals.).
 JU4259
 JU4259.The modeled gravity was interpolated from observed gravity values.
 JU4259
 JU4259. The following values were computed from the NAD 83(2011) position.
 JU4259
 JU4259;                    North         East     Units Scale Factor Converg.
 JU4259;SPC MD       -   219,789.282   494,287.835   MT  1.00003911   +0 41 21.8
 JU4259;SPC MD       -   721,092.00  1,621,676.01   sFT  1.00003911   +0 41 21.8
 JU4259;UTM  18      - 4,388,353.301   422,639.204   MT  0.99967368   -0 34 30.8
 JU4259
 JU4259!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4259!SPC MD       -   0.99999528  x   1.00003911  =   1.00003439
 JU4259!UTM  18      -   0.99999528  x   0.99967368  =   0.99966896
 JU4259
 JU4259_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2263988353(NAD 83)
 JU4259
 JU4259|---------------------------------------------------------------------|
 JU4259| PID    Reference Object                     Distance      Geod. Az  |
 JU4259|                                                           dddmmss.s |
 JU4259| JU4260 A T 2                               393.551 METERS 06742     |
 JU4259|---------------------------------------------------------------------|
 JU4259
 JU4259                          SUPERSEDED SURVEY CONTROL
 JU4259
 JU4259  NAD 83(2007)-  39 38 29.28713(N)    075 54 05.71468(W) AD(2002.00) 0
 JU4259  ELLIP H (02/10/07)   30.124  (m)                       GP(2002.00)    
 JU4259  ELLIP H (08/30/02)   30.131  (m)                       GP(       ) 4 2
 JU4259  NAD 83(1991)-  39 38 29.28706(N)    075 54 05.71520(W) AD(       ) 1
 JU4259  ELLIP H (09/15/92)   30.145  (m)                       GP(       ) 4 1
 JU4259  NGVD 29 (09/15/92)   63.5    (m)  GEOID90  model used  GPS OBS        
 JU4259
 JU4259.Superseded values are not recommended for survey control.
 JU4259
 JU4259.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4259.See file dsdata.pdf to determine how the superseded data were derived.
 JU4259
 JU4259_MARKER: DD = SURVEY DISK
 JU4259_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4259_STAMPING: A-TEAM 1991
 JU4259_MARK LOGO: MDSHA
 JU4259_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4259_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4259+STABILITY: SURFACE MOTION
 JU4259_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4259+SATELLITE: SATELLITE OBSERVATIONS - 1991
 JU4259
 JU4259  HISTORY     - Date     Condition        Report By
 JU4259  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4259  HISTORY     - 20130206 GOOD             INDIV
 JU4259
 JU4259                          STATION DESCRIPTION
 JU4259
 JU4259'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4259'THE MARKER IS LOCATED ABOUT 45.3 MI (72.9 KM) NORTHEAST OF BALTIMORE,
 JU4259'3.7 MI (6.0 KM) NORTHWEST OF ELKTON AND ALONG THE NORTHBOUND LANE OF
 JU4259'INTERSTATE HIGHWAY 95.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE
 JU4259'MARKER FROM A POINT WHERE STATE HIGHWAY 272 PASSES OVER INTERSTATE
 JU4259'HIGHWAY 95, GO NORTH ON INTERSTATE HIGHWAY 95 FOR 3.4 MI (5.5 KM) TO
 JU4259'MARK ON RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK
 JU4259'SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS
 JU4259'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 34.5 FT (10.5 M)
 JU4259'SOUTHEAST OF THE SOUTHEAST EDGE OF THE MOST SOUTHEAST PAVED SHOULDER
 JU4259'ALONG THE NORTHBOUND LANE OF INTERSTATE HIGHWAY 95 AND 46.5 FT (14.2
 JU4259'M) NORTHWEST OF A 4-FOOT HIGH FENCE.
 JU4259
 JU4259                          STATION RECOVERY (2013)
 JU4259
 JU4259'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (DRD)
 JU4259'MARK IS 1.52 M (5.0 FT) N OR A MDSHA CARSONITE WITNESS POST
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI6311 ***********************************************************************
 AI6311  DESIGNATION -  A13 010
 AI6311  PID         -  AI6311
 AI6311  STATE/COUNTY-  MD/ALLEGANY
 AI6311  COUNTRY     -  US
 AI6311  USGS QUAD   -  CUMBERLAND (2016)
 AI6311
 AI6311                         *CURRENT SURVEY CONTROL
 AI6311  ______________________________________________________________________
 AI6311* NAD 83(2011) POSITION- 39 43 11.04329(N) 078 46 25.47160(W)   ADJUSTED
 AI6311* NAD 83(2011) ELLIP HT-   189.901 (meters)        (06/27/12)   ADJUSTED
 AI6311* NAD 83(2011) EPOCH   -  2010.00
 AI6311* NAVD 88 ORTHO HEIGHT -   222.41  (meters)      729.7   (feet) LEVELING
 AI6311  ______________________________________________________________________
 AI6311  GEOID HEIGHT    -        -32.563 (meters)                     GEOID18
 AI6311  NAD 83(2011) X  -    956,442.592 (meters)                     COMP
 AI6311  NAD 83(2011) Y  - -4,818,796.550 (meters)                     COMP
 AI6311  NAD 83(2011) Z  -  4,054,219.983 (meters)                     COMP
 AI6311  LAPLACE CORR    -         -5.36  (seconds)                    DEFLEC18
 AI6311  VERT ORDER      -  THIRD ?
 AI6311
 AI6311  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI6311  Standards:
 AI6311         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI6311            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI6311  -------------------------------------------------------------------
 AI6311  NETWORK    0.82   1.76           0.36   0.31   0.90     -0.05113193
 AI6311  -------------------------------------------------------------------
 AI6311  Click here for local accuracies and other accuracy information.
 AI6311
 AI6311.The horizontal coordinates were established by GPS observations
 AI6311.and adjusted by the National Geodetic Survey in June 2012.
 AI6311
 AI6311.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI6311.been affixed to the stable North American tectonic plate. See 
 AI6311.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI6311
 AI6311.The horizontal coordinates are valid at the epoch date displayed above
 AI6311.which is a decimal equivalence of Year/Month/Day.
 AI6311
 AI6311.The orthometric height was determined by differential leveling.
 AI6311.The vertical network tie was performed by a horz. field party for horz.
 AI6311.obs reductions. Reset procedures were used to establish the elevation.
 AI6311
 AI6311.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI6311.GEOID18 height accuracy estimate available here.
 AI6311
 AI6311.Click photographs - Photos may exist for this station.
 AI6311
 AI6311.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI6311
 AI6311.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI6311
 AI6311.The ellipsoidal height was determined by GPS observations
 AI6311.and is referenced to NAD 83.
 AI6311
 AI6311. The following values were computed from the NAD 83(2011) position.
 AI6311
 AI6311;                    North         East     Units Scale Factor Converg.
 AI6311;SPC MD       -   229,389.712   247,916.594   MT  1.00005833   -1 06 47.7
 AI6311;SPC MD       -   752,589.41    813,373.03   sFT  1.00005833   -1 06 47.7
 AI6311;UTM  17      - 4,399,020.851   690,816.239   MT  1.00004829   +1 25 23.1
 AI6311
 AI6311!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI6311!SPC MD       -   0.99997021  x   1.00005833  =   1.00002854
 AI6311!UTM  17      -   0.99997021  x   1.00004829  =   1.00001850
 AI6311
 AI6311_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9081699020(NAD 83)
 AI6311
 AI6311|---------------------------------------------------------------------|
 AI6311| PID    Reference Object                     Distance      Geod. Az  |
 AI6311|                                                           dddmmss.s |
 AI6311| AI6325 A13 020                             244.649 METERS 20404     |
 AI6311|---------------------------------------------------------------------|
 AI6311
 AI6311                          SUPERSEDED SURVEY CONTROL
 AI6311
 AI6311  NAD 83(2007)-  39 43 11.04349(N)    078 46 25.47231(W) AD(2002.00) 0
 AI6311  ELLIP H (02/10/07)  189.919  (m)                       GP(2002.00)    
 AI6311  ELLIP H (08/30/02)  189.920  (m)                       GP(       ) 4 2
 AI6311  NAD 83(1991)-  39 43 11.04370(N)    078 46 25.47205(W) AD(       ) 1
 AI6311  ELLIP H (04/20/00)  189.872  (m)                       GP(       ) 4 1
 AI6311
 AI6311.Superseded values are not recommended for survey control.
 AI6311
 AI6311.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI6311.See file dsdata.pdf to determine how the superseded data were derived.
 AI6311
 AI6311_MARKER: DD = SURVEY DISK
 AI6311_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI6311_STAMPING: A13 010
 AI6311_MARK LOGO: MD-001
 AI6311_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI6311_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AI6311_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI6311+SATELLITE: SATELLITE OBSERVATIONS - 1999
 AI6311
 AI6311  HISTORY     - Date     Condition        Report By
 AI6311  HISTORY     - 1999     MONUMENTED       MD-001
 AI6311
 AI6311                          STATION DESCRIPTION
 AI6311
 AI6311'DESCRIBED BY ALLEGANY COUNTY MARYLAND 1999
 AI6311'TO REACH 6.8 MI (10.9 KM) NORTH OF CUMBERLAND.  IN ALLEGANY COUNTY,
 AI6311'MARYLAND, 6.7 MI (10.8 KM) NORTH ALONG WESTERN MARYLAND RAILWAY FROM
 AI6311'THE STATION IN CUMBERLAND TO ELLERSLIE AT FOREST GROVE ROAD, 200 FEET,
 AI6311'(61.0 M) IN CONCRETE MONUMENT IN EAST MARGIN OF NUTHATCH STREET, AND
 AI6311'SOUTH MARGIN OF FOREST GROVE ROAD, STANDARD DISK MARKED A13 010.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI6325 ***********************************************************************
 AI6325  DESIGNATION -  A13 020
 AI6325  PID         -  AI6325
 AI6325  STATE/COUNTY-  MD/ALLEGANY
 AI6325  COUNTRY     -  US
 AI6325  USGS QUAD   -  CUMBERLAND (2016)
 AI6325
 AI6325                         *CURRENT SURVEY CONTROL
 AI6325  ______________________________________________________________________
 AI6325* NAD 83(2011) POSITION- 39 43 03.80028(N) 078 46 29.66014(W)   ADJUSTED
 AI6325* NAD 83(2011) ELLIP HT-   191.551 (meters)        (06/27/12)   ADJUSTED
 AI6325* NAD 83(2011) EPOCH   -  2010.00
 AI6325* NAVD 88 ORTHO HEIGHT -   224.06  (meters)      735.1   (feet) LEVELING
 AI6325  ______________________________________________________________________
 AI6325  GEOID HEIGHT    -        -32.563 (meters)                     GEOID18
 AI6325  NAD 83(2011) X  -    956,372.774 (meters)                     COMP
 AI6325  NAD 83(2011) Y  - -4,818,957.237 (meters)                     COMP
 AI6325  NAD 83(2011) Z  -  4,054,049.206 (meters)                     COMP
 AI6325  LAPLACE CORR    -         -5.39  (seconds)                    DEFLEC18
 AI6325  VERT ORDER      -  THIRD ?
 AI6325
 AI6325  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI6325  Standards:
 AI6325         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI6325            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI6325  -------------------------------------------------------------------
 AI6325  NETWORK    0.91   1.80           0.40   0.34   0.92     -0.06068685
 AI6325  -------------------------------------------------------------------
 AI6325  Click here for local accuracies and other accuracy information.
 AI6325
 AI6325.The horizontal coordinates were established by GPS observations
 AI6325.and adjusted by the National Geodetic Survey in June 2012.
 AI6325
 AI6325.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI6325.been affixed to the stable North American tectonic plate. See 
 AI6325.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI6325
 AI6325.The horizontal coordinates are valid at the epoch date displayed above
 AI6325.which is a decimal equivalence of Year/Month/Day.
 AI6325
 AI6325.The orthometric height was determined by differential leveling.
 AI6325.The vertical network tie was performed by a horz. field party for horz.
 AI6325.obs reductions. Reset procedures were used to establish the elevation.
 AI6325
 AI6325.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI6325.GEOID18 height accuracy estimate available here.
 AI6325
 AI6325.Click photographs - Photos may exist for this station.
 AI6325
 AI6325.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI6325
 AI6325.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI6325
 AI6325.The ellipsoidal height was determined by GPS observations
 AI6325.and is referenced to NAD 83.
 AI6325
 AI6325. The following values were computed from the NAD 83(2011) position.
 AI6325
 AI6325;                    North         East     Units Scale Factor Converg.
 AI6325;SPC MD       -   229,168.295   247,812.504   MT  1.00005781   -1 06 50.4
 AI6325;SPC MD       -   751,862.98    813,031.52   sFT  1.00005781   -1 06 50.4
 AI6325;UTM  17      - 4,398,795.047   690,722.051   MT  1.00004785   +1 25 20.2
 AI6325
 AI6325!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI6325!SPC MD       -   0.99996995  x   1.00005781  =   1.00002776
 AI6325!UTM  17      -   0.99996995  x   1.00004785  =   1.00001780
 AI6325
 AI6325_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9072298795(NAD 83)
 AI6325
 AI6325|---------------------------------------------------------------------|
 AI6325| PID    Reference Object                     Distance      Geod. Az  |
 AI6325|                                                           dddmmss.s |
 AI6325| AI6311 A13 010                             244.649 METERS 02404     |
 AI6325|---------------------------------------------------------------------|
 AI6325
 AI6325                          SUPERSEDED SURVEY CONTROL
 AI6325
 AI6325  NAD 83(2007)-  39 43 03.80048(N)    078 46 29.66087(W) AD(2002.00) 0
 AI6325  ELLIP H (02/10/07)  191.568  (m)                       GP(2002.00)    
 AI6325  ELLIP H (08/30/02)  191.569  (m)                       GP(       ) 4 2
 AI6325  NAD 83(1991)-  39 43 03.80071(N)    078 46 29.66062(W) AD(       ) 1
 AI6325  ELLIP H (04/20/00)  191.521  (m)                       GP(       ) 4 1
 AI6325
 AI6325.Superseded values are not recommended for survey control.
 AI6325
 AI6325.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI6325.See file dsdata.pdf to determine how the superseded data were derived.
 AI6325
 AI6325_MARKER: DD = SURVEY DISK
 AI6325_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI6325_STAMPING: A13-020
 AI6325_MARK LOGO: MD-001
 AI6325_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI6325_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AI6325_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AI6325+SATELLITE: SATELLITE OBSERVATIONS - March 18, 2011
 AI6325
 AI6325  HISTORY     - Date     Condition        Report By
 AI6325  HISTORY     - 1999     MONUMENTED       MD-001
 AI6325  HISTORY     - 20110318 GOOD             MDLPP
 AI6325
 AI6325                          STATION DESCRIPTION
 AI6325
 AI6325'DESCRIBED BY ALLEGANY COUNTY MARYLAND 1999
 AI6325'TO REACH 6.8 MI (10.9 KM) NORTH OF CUMBERLAND.  IN ALLEGANY COUNTY,
 AI6325'MARYLAND, 6.7 MI (10.8 KM) NORTH ALONG WESTERN MARYLAND RAILWAY FROM
 AI6325'THE STATION IN CUMBERLAND TO ELLERSLIE AT FOREST GROVE ROAD, 200 FEET
 AI6325'(61.0 M) TO NUTHATCH STREET, 800 FEET (243.8 M) SOUTH ON NUTHATCH
 AI6325'STREET, IN CONCRETE MONUMENT IN WEST MARGIN OF NUTHATCH STREET BEHIND
 AI6325'FIRE HYDRANT ACROSS FROM BOTTOM STREET INTERSECTION, STANDARD DISK
 AI6325'MARKED A13020.
 AI6325
 AI6325                          STATION RECOVERY (2011)
 AI6325
 AI6325'RECOVERY NOTE BY MASON DIXON LN PRES PART 2011 (PAS)
 AI6325'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0021 ***********************************************************************
 JW0021  DESIGNATION -  AA 14
 JW0021  PID         -  JW0021
 JW0021  STATE/COUNTY-  MD/WASHINGTON
 JW0021  COUNTRY     -  US
 JW0021  USGS QUAD   -  HANCOCK (2016)
 JW0021
 JW0021                         *CURRENT SURVEY CONTROL
 JW0021  ______________________________________________________________________
 JW0021* NAD 83(1986) POSITION- 39 40 28.     (N) 078 14 01.     (W)   SCALED
 JW0021* NAVD 88 ORTHO HEIGHT -   144.232 (meters)      473.20  (feet) ADJUSTED
 JW0021  ______________________________________________________________________
 JW0021  GEOID HEIGHT    -        -33.930 (meters)                     GEOID18
 JW0021  DYNAMIC HEIGHT  -        144.148 (meters)      472.93  (feet) COMP
 JW0021  MODELED GRAVITY -    980,040.1   (mgal)                       NAVD 88
 JW0021
 JW0021  VERT ORDER      -  FIRST     CLASS II
 JW0021
 JW0021.The horizontal coordinates were scaled from a map and have
 JW0021.an estimated accuracy of +/- 6 seconds.
 JW0021
 JW0021.The orthometric height was determined by differential leveling and
 JW0021.adjusted by the NATIONAL GEODETIC SURVEY
 JW0021.in June 1991.
 JW0021
 JW0021.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0021.GEOID18 height accuracy estimate available here.
 JW0021
 JW0021.Click photographs - Photos may exist for this station.
 JW0021
 JW0021.The dynamic height is computed by dividing the NAVD 88
 JW0021.geopotential number by the normal gravity value computed on the
 JW0021.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0021.degrees latitude (g = 980.6199 gals.).
 JW0021
 JW0021.The modeled gravity was interpolated from observed gravity values.
 JW0021
 JW0021;                    North         East    Units  Estimated Accuracy
 JW0021;SPC MD       -   223,600.      294,160.      MT  (+/- 180 meters Scaled)
 JW0021
 JW0021_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD372952(NAD 83)
 JW0021
 JW0021                          SUPERSEDED SURVEY CONTROL
 JW0021
 JW0021  NGVD 29 (??/??/92)  144.437  (m)          473.87   (f) ADJ UNCH    1 2
 JW0021
 JW0021.Superseded values are not recommended for survey control.
 JW0021
 JW0021.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0021.See file dsdata.pdf to determine how the superseded data were derived.
 JW0021
 JW0021_MARKER: DB = BENCH MARK DISK
 JW0021_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0021_SP_SET: RETAINING WALL
 JW0021_STAMPING: AA 14 1935
 JW0021_MARK LOGO: CGS
 JW0021_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0021
 JW0021  HISTORY     - Date     Condition        Report By
 JW0021  HISTORY     - 1935     MONUMENTED       CGS
 JW0021  HISTORY     - 1941     GOOD             CGS
 JW0021
 JW0021                          STATION DESCRIPTION
 JW0021
 JW0021'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0021'3.6 MI SW FROM HANCOCK.
 JW0021'3.6 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JW0021'THE STATION AT HANCOCK, 19 RAILS SOUTHWEST OF MILE-POST NO. 119,
 JW0021'27 RAILS NORTHEAST OF SIGNAL TOWER NO. A-1194, 82 FEET SOUTHWEST
 JW0021'OF THE 7TH. TELEGRAPH POLE SOUTHWEST OF THE MILE-POST, 43 FEET
 JW0021'NORTHEAST OF THE 8TH. TELEGRAPH POLE SOUTHWEST OF THE MILE-POST,
 JW0021'5.8 FEET SOUTHEAST OF THE SOUTHEAST RAIL OF THE TRACK, SET IN
 JW0021'THE CONCRETE RETAINING WALL.  THE MARK WAS FOUND TO BE UNDER
 JW0021'ABOUT 1 1/2 FOOT OF RIGHT-OF-WAY BALLAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0722 ***********************************************************************
 JV0722  DESIGNATION -  AA 44
 JV0722  PID         -  JV0722
 JV0722  STATE/COUNTY-  MD/BALTIMORE
 JV0722  COUNTRY     -  US
 JV0722  USGS QUAD   -  RELAY (2016)
 JV0722
 JV0722                         *CURRENT SURVEY CONTROL
 JV0722  ______________________________________________________________________
 JV0722* NAD 83(1986) POSITION- 39 13 55.     (N) 076 44 07.     (W)   SCALED
 JV0722* NAVD 88 ORTHO HEIGHT -    21.698 (meters)       71.19  (feet) ADJUSTED
 JV0722  ______________________________________________________________________
 JV0722  GEOID HEIGHT    -        -32.433 (meters)                     GEOID18
 JV0722  DYNAMIC HEIGHT  -         21.686 (meters)       71.15  (feet) COMP
 JV0722  MODELED GRAVITY -    980,097.3   (mgal)                       NAVD 88
 JV0722
 JV0722  VERT ORDER      -  FIRST     CLASS II
 JV0722
 JV0722.The horizontal coordinates were scaled from a map and have
 JV0722.an estimated accuracy of +/- 6 seconds.
 JV0722
 JV0722.The orthometric height was determined by differential leveling and
 JV0722.adjusted by the NATIONAL GEODETIC SURVEY
 JV0722.in June 1991.
 JV0722
 JV0722.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0722.GEOID18 height accuracy estimate available here.
 JV0722
 JV0722.Click photographs - Photos may exist for this station.
 JV0722
 JV0722.The dynamic height is computed by dividing the NAVD 88
 JV0722.geopotential number by the normal gravity value computed on the
 JV0722.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0722.degrees latitude (g = 980.6199 gals.).
 JV0722
 JV0722.The modeled gravity was interpolated from observed gravity values.
 JV0722
 JV0722;                    North         East    Units  Estimated Accuracy
 JV0722;SPC MD       -   173,790.      422,860.      MT  (+/- 180 meters Scaled)
 JV0722
 JV0722_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ502439(NAD 83)
 JV0722
 JV0722                          SUPERSEDED SURVEY CONTROL
 JV0722
 JV0722  NGVD 29 (11/26/84)   21.922  (m)           71.92   (f) ADJUSTED    1 2
 JV0722
 JV0722.Superseded values are not recommended for survey control.
 JV0722
 JV0722.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0722.See file dsdata.pdf to determine how the superseded data were derived.
 JV0722
 JV0722_MARKER: DB = BENCH MARK DISK
 JV0722_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0722_SP_SET: BRIDGE COPING
 JV0722_STAMPING: AA 44 1941
 JV0722_MARK LOGO: CGS
 JV0722_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0722
 JV0722  HISTORY     - Date     Condition        Report By
 JV0722  HISTORY     - 1941     MONUMENTED       CGS
 JV0722  HISTORY     - 1941     GOOD             CGS
 JV0722
 JV0722                          STATION DESCRIPTION
 JV0722
 JV0722'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0722'4.2 MI SE FROM ELLICOTT CITY.
 JV0722'IN BALTIMORE COUNTY, ABOUT 4.2 MILES SOUTHEAST ALONG THE
 JV0722'BALTIMORE AND OHIO RAILROAD FROM ELLICOTT CITY, HOWARD COUNTY,
 JV0722'9.2 FEET WEST OF THE TWENTY-FIFTH POLE WEST OF MILEPOST 10, AT
 JV0722'BRIDGE 10 OVER AN OLD ROAD LEADING TO THE ABANDONED STATION AT
 JV0722'VINEYARD, IN THE TOP OF THE SOUTH COPING, 0.6 FOOT FROM THE WEST
 JV0722'END, 12.7 FEET SOUTH OF THE SOUTH RAIL OF THE EAST-BOUND TRACK,
 JV0722'AND ABOUT 2.4 FEET LOWER THAN THE TOP OF THE RAIL.  A STANDARD
 JV0722'DISK, STAMPED AA 44 1941.
 JV0722
 JV0722                          STATION RECOVERY (1941)
 JV0722
 JV0722'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941
 JV0722'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0223 ***********************************************************************
 JV0223  DESIGNATION -  AA 80
 JV0223  PID         -  JV0223
 JV0223  STATE/COUNTY-  MD/HARFORD
 JV0223  COUNTRY     -  US
 JV0223  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0223
 JV0223                         *CURRENT SURVEY CONTROL
 JV0223  ______________________________________________________________________
 JV0223* NAD 83(1986) POSITION- 39 31 23.     (N) 076 28 39.     (W)   SCALED
 JV0223* NAVD 88 ORTHO HEIGHT -   146.358 (meters)      480.18  (feet) ADJUSTED
 JV0223  ______________________________________________________________________
 JV0223  GEOID HEIGHT    -        -32.606 (meters)                     GEOID18
 JV0223  DYNAMIC HEIGHT  -        146.282 (meters)      479.93  (feet) COMP
 JV0223  MODELED GRAVITY -    980,102.7   (mgal)                       NAVD 88
 JV0223
 JV0223  VERT ORDER      -  SECOND    CLASS 0
 JV0223
 JV0223.The horizontal coordinates were scaled from a map and have
 JV0223.an estimated accuracy of +/- 6 seconds.
 JV0223
 JV0223.The orthometric height was determined by differential leveling and
 JV0223.adjusted by the NATIONAL GEODETIC SURVEY
 JV0223.in June 1991.
 JV0223
 JV0223.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0223.GEOID18 height accuracy estimate available here.
 JV0223
 JV0223.Click photographs - Photos may exist for this station.
 JV0223
 JV0223.The dynamic height is computed by dividing the NAVD 88
 JV0223.geopotential number by the normal gravity value computed on the
 JV0223.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0223.degrees latitude (g = 980.6199 gals.).
 JV0223
 JV0223.The modeled gravity was interpolated from observed gravity values.
 JV0223
 JV0223;                    North         East    Units  Estimated Accuracy
 JV0223;SPC MD       -   206,200.      444,930.      MT  (+/- 180 meters Scaled)
 JV0223
 JV0223_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ730758(NAD 83)
 JV0223
 JV0223                          SUPERSEDED SURVEY CONTROL
 JV0223
 JV0223  NGVD 29 (11/26/84)  146.601  (m)          480.97   (f) ADJUSTED    2 0
 JV0223
 JV0223.Superseded values are not recommended for survey control.
 JV0223
 JV0223.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0223.See file dsdata.pdf to determine how the superseded data were derived.
 JV0223
 JV0223_MARKER: DB = BENCH MARK DISK
 JV0223_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0223_STAMPING: AA 80 1942
 JV0223_MARK LOGO: CGS
 JV0223_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0223+STABILITY: SURFACE MOTION
 JV0223
 JV0223  HISTORY     - Date     Condition        Report By
 JV0223  HISTORY     - 1942     MONUMENTED       CGS
 JV0223
 JV0223                          STATION DESCRIPTION
 JV0223
 JV0223'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0223'2.4 MI N FROM BALDWIN.
 JV0223'THIS MARK IS ABOUT 2.35 MILES NORTH ALONG HIGHWAY 165 FROM THE
 JV0223'INTERSECTION AT BALDWIN, BALTIMORE COUNTY, 19.6 FEET WEST OF
 JV0223'THE CENTER LINE OF THE HIGHWAY, 12.0 FEET NORTHWEST OF THE SOUTH
 JV0223'END OF A GUARD RAIL, 179.0 FEET NORTHWEST AND ACROSS HIGHWAY
 JV0223'FROM HIGHWAY MARKER NUMBER 20, 4.0 FEET SOUTHEAST OF A STANDARD
 JV0223'REFERENCE POST, STAMPED AA 80 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2976 ***********************************************************************
 JV2976  DESIGNATION -  AA 89
 JV2976  PID         -  JV2976
 JV2976  STATE/COUNTY-  MD/FREDERICK
 JV2976  COUNTRY     -  US
 JV2976  USGS QUAD   -  MIDDLETOWN (2016)
 JV2976
 JV2976                         *CURRENT SURVEY CONTROL
 JV2976  ______________________________________________________________________
 JV2976* NAD 83(1986) POSITION- 39 27 56.     (N) 077 32 44.     (W)   SCALED
 JV2976* NAVD 88 ORTHO HEIGHT -   187.678 (meters)      615.74  (feet) ADJUSTED
 JV2976  ______________________________________________________________________
 JV2976  GEOID HEIGHT    -        -33.106 (meters)                     GEOID18
 JV2976  DYNAMIC HEIGHT  -        187.574 (meters)      615.40  (feet) COMP
 JV2976  MODELED GRAVITY -    980,067.0   (mgal)                       NAVD 88
 JV2976
 JV2976  VERT ORDER      -  SECOND    CLASS 0
 JV2976
 JV2976.The horizontal coordinates were scaled from a map and have
 JV2976.an estimated accuracy of +/- 6 seconds.
 JV2976
 JV2976.The orthometric height was determined by differential leveling and
 JV2976.adjusted by the NATIONAL GEODETIC SURVEY
 JV2976.in June 1991.
 JV2976
 JV2976.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2976.GEOID18 height accuracy estimate available here.
 JV2976
 JV2976.Click photographs - Photos may exist for this station.
 JV2976
 JV2976.The dynamic height is computed by dividing the NAVD 88
 JV2976.geopotential number by the normal gravity value computed on the
 JV2976.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2976.degrees latitude (g = 980.6199 gals.).
 JV2976
 JV2976.The modeled gravity was interpolated from observed gravity values.
 JV2976
 JV2976;                    North         East    Units  Estimated Accuracy
 JV2976;SPC MD       -   199,830.      353,050.      MT  (+/- 180 meters Scaled)
 JV2976
 JV2976_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ810715(NAD 83)
 JV2976
 JV2976                          SUPERSEDED SURVEY CONTROL
 JV2976
 JV2976  NGVD 29 (11/26/84)  187.892  (m)          616.44   (f) ADJUSTED    2 0
 JV2976
 JV2976.Superseded values are not recommended for survey control.
 JV2976
 JV2976.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2976.See file dsdata.pdf to determine how the superseded data were derived.
 JV2976
 JV2976_MARKER: DB = BENCH MARK DISK
 JV2976_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2976_STAMPING: AA 89 1942
 JV2976_MARK LOGO: CGS
 JV2976_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2976+STABILITY: SURFACE MOTION
 JV2976
 JV2976  HISTORY     - Date     Condition        Report By
 JV2976  HISTORY     - 1942     MONUMENTED       CGS
 JV2976  HISTORY     - 20130206 MARK NOT FOUND   GEOCAC
 JV2976
 JV2976                          STATION DESCRIPTION
 JV2976
 JV2976'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2976'0.7 MI N FROM MIDDLETOWN.
 JV2976'0.7 MILE NORTH ALONG STATE HIGHWAY 17 FROM THE INTERSECTION OF
 JV2976'U.S. HIGHWAY 40 AT MIDDLETOWN, FREDERICK COUNTY, THENCE 1.1 MILES
 JV2976'NORTHWEST ALONG A DIRT ROAD, 69 FEET EAST OF THE EAST CORNER
 JV2976'OF A TWO-STORY WHITE HOUSE, IN THE EAST CORNER OF THE YARD, 17
 JV2976'FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, AND 1 FOOT
 JV2976'SOUTHWEST OF THE FENCE POST AT THE CORNER OF THE YARD.  A STANDARD
 JV2976'DISK, STAMPED AA 89 1942 AND SET IN THE TOP OF A CONCRETE POST.
 JV2976
 JV2976                          STATION RECOVERY (2013)
 JV2976
 JV2976'RECOVERY NOTE BY GEOCACHING 2013 (DPB)
 JV2976'NOT VISIBLE ON THE SURFACE, ALTHOUGH THE AREA DOES NOT APPEAR TO HAVE
 JV2976'BEEN DISTURBED BY CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 UA0028 ***********************************************************************
 UA0028  DESIGNATION -  AAFB
 UA0028  PID         -  UA0028
 UA0028  STATE/COUNTY-  MD/PRINCE GEORGES
 UA0028  COUNTRY     -  US
 UA0028  USGS QUAD   -  ANACOSTIA (2016)
 UA0028
 UA0028                         *CURRENT SURVEY CONTROL
 UA0028  ______________________________________________________________________
 UA0028* NAD 83(1986) POSITION- 38 48 35.     (N) 076 52 49.     (W)   SCALED
 UA0028* NAVD 88 ORTHO HEIGHT -    84.425 (meters)      276.98  (feet) ADJUSTED
 UA0028  ______________________________________________________________________
 UA0028  GEOID HEIGHT    -        -32.532 (meters)                     GEOID18
 UA0028  DYNAMIC HEIGHT  -         84.377 (meters)      276.83  (feet) COMP
 UA0028  MODELED GRAVITY -    980,068.6   (mgal)                       NAVD 88
 UA0028
 UA0028  VERT ORDER      -  FIRST     CLASS II
 UA0028
 UA0028.This mark is at Andrews Afb Airport (ADW)
 UA0028
 UA0028.The horizontal coordinates were scaled from a map and have
 UA0028.an estimated accuracy of +/- 6 seconds.
 UA0028
 UA0028.The orthometric height was determined by differential leveling and
 UA0028.adjusted by the NATIONAL GEODETIC SURVEY
 UA0028.in August 1994.
 UA0028
 UA0028.Significant digits in the geoid height do not necessarily reflect accuracy.
 UA0028.GEOID18 height accuracy estimate available here.
 UA0028
 UA0028.Click photographs - Photos may exist for this station.
 UA0028
 UA0028.The dynamic height is computed by dividing the NAVD 88
 UA0028.geopotential number by the normal gravity value computed on the
 UA0028.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 UA0028.degrees latitude (g = 980.6199 gals.).
 UA0028
 UA0028.The modeled gravity was interpolated from observed gravity values.
 UA0028
 UA0028;                    North         East    Units  Estimated Accuracy
 UA0028;SPC MD       -   126,890.      410,400.      MT  (+/- 180 meters Scaled)
 UA0028
 UA0028_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH367973(NAD 83)
 UA0028
 UA0028                          SUPERSEDED SURVEY CONTROL
 UA0028
 UA0028.No superseded survey control is available for this station.
 UA0028
 UA0028_MARKER: DG = GRAVITY STATION DISK
 UA0028_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 UA0028_SP_SET: ROOM FLOOR
 UA0028_STAMPING: AAFB 1994
 UA0028_MARK LOGO: NGS
 UA0028_MAGNETIC: N = NO MAGNETIC MATERIAL
 UA0028_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 UA0028
 UA0028  HISTORY     - Date     Condition        Report By
 UA0028  HISTORY     - 1994     MONUMENTED       NGS
 UA0028
 UA0028                          STATION DESCRIPTION
 UA0028
 UA0028'DESCRIBED BY NATIONAL GEODETIC SURVEY 1994
 UA0028'AT ANDREWS AIR FORCE BASE, 1735 FIRST STREET, IN THE RADIAC ROOM OF
 UA0028'THE PRECISION MEASUREMENT EQUIPMENT LABORATORY.  A GRAVITY STATION
 UA0028'DISK EPOXIED TO THE FLOOR IN THE RADIAC ROOM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2566 ***********************************************************************
 HU2566  HT_MOD      -  This is a Height Modernization Survey Station.
 HU2566  DESIGNATION -  AARON AZ MK 2
 HU2566  PID         -  HU2566
 HU2566  STATE/COUNTY-  MD/SOMERSET
 HU2566  COUNTRY     -  US
 HU2566  USGS QUAD   -  PRINCESS ANNE (2016)
 HU2566
 HU2566                         *CURRENT SURVEY CONTROL
 HU2566  ______________________________________________________________________
 HU2566* NAD 83(2011) POSITION- 38 12 38.93809(N) 075 42 03.21255(W)   ADJUSTED
 HU2566* NAD 83(2011) ELLIP HT-   -31.002 (meters)        (01/22/24)   ADJUSTED
 HU2566* NAD 83(2011) EPOCH   -  2010.00
 HU2566* NAVD 88 ORTHO HEIGHT -     4.99  (meters)       16.4   (feet) GPS OBS
 HU2566  ______________________________________________________________________
 HU2566  GEOID HEIGHT    -        -35.985 (meters)                     GEOID18
 HU2566  NAD 83(2011) X  -  1,239,356.526 (meters)                     COMP
 HU2566  NAD 83(2011) Y  - -4,862,505.772 (meters)                     COMP
 HU2566  NAD 83(2011) Z  -  3,923,837.910 (meters)                     COMP
 HU2566  LAPLACE CORR    -         -1.62  (seconds)                    DEFLEC18
 HU2566
 HU2566  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2566  Standards:
 HU2566         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2566            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2566  -------------------------------------------------------------------
 HU2566  NETWORK    0.41   1.08           0.18   0.15   0.55      0.09744048
 HU2566  -------------------------------------------------------------------
 HU2566  Click here for local accuracies and other accuracy information.
 HU2566
 HU2566.The horizontal coordinates were established by GPS observations
 HU2566.and adjusted by the MD DOT HIGHWAY ADMIN in January 2024.
 HU2566
 HU2566.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2566.been affixed to the stable North American tectonic plate. See 
 HU2566.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2566
 HU2566.The horizontal coordinates are valid at the epoch date displayed above
 HU2566.which is a decimal equivalence of Year/Month/Day.
 HU2566
 HU2566.The orthometric height was determined by GPS observations and a
 HU2566.high-resolution geoid model using precise GPS observation and
 HU2566.processing techniques.
 HU2566
 HU2566.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2566.GEOID18 height accuracy estimate available here.
 HU2566
 HU2566.Click photographs - Photos may exist for this station.
 HU2566
 HU2566.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2566
 HU2566.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2566
 HU2566.The ellipsoidal height was determined by GPS observations
 HU2566.and is referenced to NAD 83.
 HU2566
 HU2566. The following values were computed from the NAD 83(2011) position.
 HU2566
 HU2566;                    North         East     Units Scale Factor Converg.
 HU2566;SPC MD       -    61,212.812   513,774.461   MT  1.00001671   +0 48 55.3
 HU2566;SPC MD       -   200,829.03  1,685,608.38   sFT  1.00001671   +0 48 55.3
 HU2566;UTM  18      - 4,229,438.084   438,639.738   MT  0.99964637   -0 26 00.8
 HU2566
 HU2566!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2566!SPC MD       -   1.00000486  x   1.00001671  =   1.00002157
 HU2566!UTM  18      -   1.00000486  x   0.99964637  =   0.99965123
 HU2566
 HU2566:                Primary Azimuth Mark                     Grid Az
 HU2566:SPC MD       -  AARON                                    166 32 17.6
 HU2566:UTM  18      -  AARON                                    167 47 13.7
 HU2566
 HU2566_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3863929438(NAD 83)
 HU2566
 HU2566|---------------------------------------------------------------------|
 HU2566| PID    Reference Object                     Distance      Geod. Az  |
 HU2566|                                                           dddmmss.s |
 HU2566| HU2565 AARON                               APPROX. 1.3 KM 1672112.9 |
 HU2566|---------------------------------------------------------------------|
 HU2566
 HU2566                          SUPERSEDED SURVEY CONTROL
 HU2566
 HU2566  NAD 83(1993)-  38 12 38.93461(N)    075 42 03.21176(W) AD(       ) 2
 HU2566  NAD 83(1991)-  38 12 38.93507(N)    075 42 03.21223(W) AD(       ) 2
 HU2566  NAD 83(1986)-  38 12 38.93176(N)    075 42 03.23118(W) AD(       ) 2
 HU2566  NAD 27      -  38 12 38.48990(N)    075 42 04.49767(W) AD(       ) 2
 HU2566  NGVD 29 (11/20/87)    5.3    (m)           17.     (f) VERT ANG       
 HU2566
 HU2566.Superseded values are not recommended for survey control.
 HU2566
 HU2566.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2566.See file dsdata.pdf to determine how the superseded data were derived.
 HU2566
 HU2566_MARKER: DD = SURVEY DISK
 HU2566_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2566_STAMPING: AARON AZ 2 1985
 HU2566_MARK LOGO: MDSHA
 HU2566_PROJECTION: RECESSED 10 CENTIMETERS
 HU2566_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2566+STABILITY: SURFACE MOTION
 HU2566_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2566+SATELLITE: SATELLITE OBSERVATIONS - February 26, 2020
 HU2566
 HU2566  HISTORY     - Date     Condition        Report By
 HU2566  HISTORY     - 1985     MONUMENTED       MDSHA
 HU2566  HISTORY     - 20010505 GOOD             USPSQD
 HU2566  HISTORY     - 20050312 GOOD             USPSQD
 HU2566  HISTORY     - 20200226 GOOD             MDSHA
 HU2566
 HU2566                          STATION DESCRIPTION
 HU2566
 HU2566'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1985 (RGP)
 HU2566'THE STATION IS LOCATED ABOUT 19-1/4 KM (12 MI) SOUTH FROM SALISBURY,
 HU2566'9-1/2 KM (6 MI) NORTH FROM WESTOVER AND 1 KM (0.5 MI) NORTHWEST FROM
 HU2566'PRINCESS ANNE.
 HU2566'
 HU2566'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2566'
 HU2566'TO REACH THE STATION FROM THE POST OFFICE AT PRINCESS ANNE, GO SOUTH
 HU2566'ON STATE HIGHWAY 675 FOR 0.35 KM (0.22 MI) TO A SIDE ROAD RIGHT.
 HU2566'TURN RIGHT AND GO WEST ON LINDEN AVENUE FOR 0.5 KM (0.3 MI) TO U.S.
 HU2566'HIGHWAY 13.  TURN RIGHT AND GO NORTH ON U.S. HIGHWAY 13 FOR 1.5 KM
 HU2566'(0.95 MI) TO THE STATION IN THE MEDIUM STRIP.
 HU2566'
 HU2566'THE STATION IS A STANDARD MARYLAND STATE HIGHWAY ADMINISTRATION DISK
 HU2566'STAMPED--AARON AZ 2 1985--SET INTO THE TOP OF A 30 CM (12 INCHES)
 HU2566'ROUND CONCRETE MONUMENT FLUSH WITH THE SURFACE OF THE GROUND.
 HU2566'
 HU2566'THE STATION IS LOCATED 6.7 M (22.0 FT) ESE OF THE CENTER OF THE SOUTH
 HU2566'BOUND LANE OF U.S. HIGHWAY 13, 24.4 M (80.0 FT) WNW OF THE CENTER OF
 HU2566'THE NORTH BOUND LANE OF U.S. HIGHWAY 13, 10.0 M (32.8 FT) NORTHWEST
 HU2566'FROM A INLET AND 60.7 M (199.0FT) SSW FROM A 12 INCH PINE TREE.
 HU2566
 HU2566                          STATION RECOVERY (2001)
 HU2566
 HU2566'RECOVERY NOTE BY US POWER SQUADRON 2001 (SAL)
 HU2566'RECOVERED IN GOOD CONDITION.
 HU2566
 HU2566                          STATION RECOVERY (2005)
 HU2566
 HU2566'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 HU2566'RECOVERED IN GOOD CONDITION.
 HU2566
 HU2566                          STATION RECOVERY (2020)
 HU2566
 HU2566'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (EBD)
 HU2566'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3565 ***********************************************************************
 JU3565  DESIGNATION -  ABB 1898
 JU3565  PID         -  JU3565
 JU3565  STATE/COUNTY-  MD/CECIL
 JU3565  COUNTRY     -  US
 JU3565  USGS QUAD   -  EARLEVILLE (2016)
 JU3565
 JU3565                         *CURRENT SURVEY CONTROL
 JU3565  ______________________________________________________________________
 JU3565* NAD 83(1991) POSITION- 39 27 30.34423(N) 075 59 22.88894(W)   ADJUSTED
 JU3565* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3565  ______________________________________________________________________
 JU3565  GEOID HEIGHT    -        -33.355 (meters)                     GEOID18
 JU3565  LAPLACE CORR    -         -0.77  (seconds)                    DEFLEC18
 JU3565  HORZ ORDER      -  THIRD
 JU3565
 JU3565.The horizontal coordinates were established by classical geodetic methods
 JU3565.and adjusted by the National Geodetic Survey in January 1992.
 JU3565
 JU3565.The orthometric height was scaled from a topographic map.
 JU3565
 JU3565.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3565.GEOID18 height accuracy estimate available here.
 JU3565
 JU3565.Click photographs - Photos may exist for this station.
 JU3565
 JU3565.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3565
 JU3565. The following values were computed from the NAD 83(1991) position.
 JU3565
 JU3565;                    North         East     Units Scale Factor Converg.
 JU3565;SPC MD       -   199,380.628   486,950.198   MT  1.00000149   +0 38 02.8
 JU3565;SPC MD       -   654,134.61  1,597,602.44   sFT  1.00000149   +0 38 02.8
 JU3565;UTM  18      - 4,368,118.306   414,855.820   MT  0.99968926   -0 37 44.4
 JU3565
 JU3565!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3565!SPC MD       -   1.00000527  x   1.00000149  =   1.00000676
 JU3565!UTM  18      -   1.00000527  x   0.99968926  =   0.99969453
 JU3565
 JU3565:                Primary Azimuth Mark                     Grid Az
 JU3565:SPC MD       -  BAT                                      043 01 31.2
 JU3565:UTM  18      -  BAT                                      044 17 18.4
 JU3565
 JU3565_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1485568118(NAD 83)
 JU3565
 JU3565|---------------------------------------------------------------------|
 JU3565| PID    Reference Object                     Distance      Geod. Az  |
 JU3565|                                                           dddmmss.s |
 JU3565| JU3577 BAT                                 APPROX. 2.4 KM 0433934.0 |
 JU3565|---------------------------------------------------------------------|
 JU3565
 JU3565                          SUPERSEDED SURVEY CONTROL
 JU3565
 JU3565  NAD 83(1986)-  39 27 30.33650(N)    075 59 22.89500(W) AD(       ) 3
 JU3565  NAD 27      -  39 27 29.94200(N)    075 59 24.09900(W) AD(       ) 3
 JU3565  USSD        -  39 27 30.31900(N)    075 59 23.93500(W) AD(       ) 3
 JU3565
 JU3565.Superseded values are not recommended for survey control.
 JU3565
 JU3565.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3565.See file dsdata.pdf to determine how the superseded data were derived.
 JU3565
 JU3565
 JU3565  HISTORY     - Date     Condition        Report By
 JU3565  HISTORY     - 1898     FIRST OBSERVED   CGS
 JU3565  HISTORY     - 1902     GOOD             CGS
 JU3565
 JU3565                          STATION DESCRIPTION
 JU3565
 JU3565'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 JU3565'ON NW SIDE OF ELK RIVER, ON THE EXTREME POINT OF JACOBS NOSE,
 JU3565'AT HIGH-WATER MARK.  MARKED BY A BOX, 3 INCHES SQUARE AND 3 FEET
 JU3565'DEEP FILLED WITH CEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4918 ***********************************************************************
 JV4918  DESIGNATION -  ABBEY ISLAND 2 1897
 JV4918  PID         -  JV4918
 JV4918  STATE/COUNTY-  MD/HARFORD
 JV4918  COUNTRY     -  US
 JV4918  USGS QUAD   -  HANESVILLE (2016)
 JV4918
 JV4918                         *CURRENT SURVEY CONTROL
 JV4918  ______________________________________________________________________
 JV4918* NAD 83(1991) POSITION- 39 20 54.73667(N) 076 13 39.22392(W)   ADJUSTED
 JV4918* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4918  ______________________________________________________________________
 JV4918  GEOID HEIGHT    -        -33.262 (meters)                     GEOID18
 JV4918  LAPLACE CORR    -         -1.50  (seconds)                    DEFLEC18
 JV4918  HORZ ORDER      -  THIRD
 JV4918
 JV4918.The horizontal coordinates were established by classical geodetic methods
 JV4918.and adjusted by the National Geodetic Survey in January 1992.
 JV4918
 JV4918.The orthometric height was scaled from a topographic map.
 JV4918
 JV4918.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4918.GEOID18 height accuracy estimate available here.
 JV4918
 JV4918.Click photographs - Photos may exist for this station.
 JV4918
 JV4918.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4918
 JV4918. The following values were computed from the NAD 83(1991) position.
 JV4918
 JV4918;                    North         East     Units Scale Factor Converg.
 JV4918;SPC MD       -   186,980.815   466,582.115   MT  0.99998383   +0 29 05.3
 JV4918;SPC MD       -   613,452.89  1,530,778.16   sFT  0.99998383   +0 29 05.3
 JV4918;UTM  18      - 4,356,173.871   394,225.101   MT  0.99973775   -0 46 42.2
 JV4918
 JV4918!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4918!SPC MD       -   1.00000526  x   0.99998383  =   0.99998909
 JV4918!UTM  18      -   1.00000526  x   0.99973775  =   0.99974301
 JV4918
 JV4918:                Primary Azimuth Mark                     Grid Az
 JV4918:SPC MD       -  NEXT 1898                                052 13 45.6
 JV4918:UTM  18      -  NEXT 1898                                053 29 33.1
 JV4918
 JV4918_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9422556173(NAD 83)
 JV4918
 JV4918|---------------------------------------------------------------------|
 JV4918| PID    Reference Object                     Distance      Geod. Az  |
 JV4918|                                                           dddmmss.s |
 JV4918| JV4913 NEXT 1898                           APPROX. 3.4 KM 0524250.9 |
 JV4918|---------------------------------------------------------------------|
 JV4918
 JV4918                          SUPERSEDED SURVEY CONTROL
 JV4918
 JV4918  NAD 83(1986)-  39 20 54.73047(N)    076 13 39.23138(W) AD(       ) 3
 JV4918  NAD 27      -  39 20 54.35100(N)    076 13 40.38900(W) AD(       ) 3
 JV4918  USSD        -  39 20 54.71300(N)    076 13 40.24100(W) AD(       ) 3
 JV4918
 JV4918.Superseded values are not recommended for survey control.
 JV4918
 JV4918.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4918.See file dsdata.pdf to determine how the superseded data were derived.
 JV4918
 JV4918_MARKER: N = NAIL
 JV4918_SETTING: 0 = UNSPECIFIED SETTING
 JV4918_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4918
 JV4918  HISTORY     - Date     Condition        Report By
 JV4918  HISTORY     - 1897     MONUMENTED       CGS
 JV4918
 JV4918                          STATION DESCRIPTION
 JV4918
 JV4918'DESCRIBED BY COAST AND GEODETIC SURVEY 1897 (JN)
 JV4918'ON POINT AT NE SIDE OF ENTRANCE TO BUSH RIVER, ON PROPERTY OF
 JV4918'DR. G.G. FERNANDIS, ON A SAND RIDGE AT EXTREME END OF POINT,
 JV4918'SURROUNDED BY AND UNDERLAIN BY MARSH.  STATION IS ABOUT 180
 JV4918'PACES S OF SMALL CLUBHOUSE.  MARKED BY A NAIL IN TOP OF A
 JV4918'4- BY 4-INCH STUB, 5 FEET LONG, DRIVEN INTO THE MARSH, LEAVING
 JV4918'ABOUT 3 INCHES PROJECTING.  FOUR SIMILAR STAKES WITH WIRE NAILS
 JV4918'IN TOP WERE DRIVEN IN THE GROUND APPROXIMATELY N, S, E, AND W
 JV4918'FROM THE STATION AND 6 FEET THEREFROM.  THE STATION WAS
 JV4918'RE-MARKED BY TWO 4-INCH DRAIN TILES SET ONE ABOVE THE OTHER, THE
 JV4918'TOP OF THE UPPER TILE BEING ABOUT 8 INCHES BELOW THE SURFACE
 JV4918'OF GROUND.  ABOVE THE TILES, FLUSH WITH THE SURFACE, IS
 JV4918'A NAIL IN A 4-INCH STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1126 ***********************************************************************
 HV1126  DESIGNATION -  ABBOTT
 HV1126  PID         -  HV1126
 HV1126  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1126  COUNTRY     -  US
 HV1126  USGS QUAD   -  LANHAM (2016)
 HV1126
 HV1126                         *CURRENT SURVEY CONTROL
 HV1126  ______________________________________________________________________
 HV1126* NAD 83(1991) POSITION- 38 56 34.34714(N) 076 51 18.22788(W)   ADJUSTED
 HV1126* NAVD 88 ORTHO HEIGHT -    62.502 (meters)      205.06  (feet) ADJUSTED
 HV1126  ______________________________________________________________________
 HV1126  GEOID HEIGHT    -        -32.400 (meters)                     GEOID18
 HV1126  LAPLACE CORR    -         -5.07  (seconds)                    DEFLEC18
 HV1126  DYNAMIC HEIGHT  -         62.468 (meters)      204.95  (feet) COMP
 HV1126  MODELED GRAVITY -    980,087.4   (mgal)                       NAVD 88
 HV1126
 HV1126  HORZ ORDER      -  FIRST
 HV1126  VERT ORDER      -  SECOND    CLASS 0
 HV1126
 HV1126.The horizontal coordinates were established by classical geodetic methods
 HV1126.and adjusted by the National Geodetic Survey in January 1992.
 HV1126
 HV1126.The orthometric height was determined by differential leveling and
 HV1126.adjusted by the NATIONAL GEODETIC SURVEY
 HV1126.in June 1991.
 HV1126
 HV1126.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1126.GEOID18 height accuracy estimate available here.
 HV1126
 HV1126.Click photographs - Photos may exist for this station.
 HV1126
 HV1126.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1126
 HV1126.The dynamic height is computed by dividing the NAVD 88
 HV1126.geopotential number by the normal gravity value computed on the
 HV1126.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1126.degrees latitude (g = 980.6199 gals.).
 HV1126
 HV1126.The modeled gravity was interpolated from observed gravity values.
 HV1126
 HV1126. The following values were computed from the NAD 83(1991) position.
 HV1126
 HV1126;                    North         East     Units Scale Factor Converg.
 HV1126;SPC MD       -   141,674.675   412,564.808   MT  0.99995053   +0 05 27.5
 HV1126;SPC MD       -   464,811.00  1,353,556.37   sFT  0.99995053   +0 05 27.5
 HV1126;UTM  18      - 4,312,073.469   339,231.770   MT  0.99991827   -1 09 58.5
 HV1126
 HV1126!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1126!SPC MD       -   0.99999528  x   0.99995053  =   0.99994581
 HV1126!UTM  18      -   0.99999528  x   0.99991827  =   0.99991355
 HV1126
 HV1126:                Primary Azimuth Mark                     Grid Az
 HV1126:SPC MD       -  MARY                                     286 44 20.1
 HV1126:UTM  18      -  MARY                                     287 59 46.1
 HV1126
 HV1126_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3923112073(NAD 83)
 HV1126
 HV1126|---------------------------------------------------------------------|
 HV1126| PID    Reference Object                     Distance      Geod. Az  |
 HV1126|                                                           dddmmss.s |
 HV1126| HV1128 ABBOTT RM 1                          26.936 METERS 00219     |
 HV1126| HV7474 GREENBELT NASA TANK                 APPROX. 6.0 KM 0070646.0 |
 HV1126| HV7465 GLENN DALE WSSC TANK                APPROX. 4.1 KM 0655614.4 |
 HV1126| HV1127 ABBOTT RM 2                          25.438 METERS 08838     |
 HV1126| HV7753 ROGERS HEIGHTS STANDPIPE            APPROX. 5.6 KM 2715649.6 |
 HV1126| HV7678 MARY                                APPROX. 3.0 KM 2864947.6 |
 HV1126| HV7471 NEW CARROLLTON EPIS CH SPIRE        APPROX. 2.1 KM 3100234.2 |
 HV1126| HV7826 NEW CARROLLTON FIRST BAP CH         APPROX. 2.6 KM 3132945.5 |
 HV1126|---------------------------------------------------------------------|
 HV1126
 HV1126                          SUPERSEDED SURVEY CONTROL
 HV1126
 HV1126  NAD 83(1986)-  38 56 34.34544(N)    076 51 18.23940(W) AD(       ) 1
 HV1126  NAD 27      -  38 56 33.94601(N)    076 51 19.34040(W) AD(       ) 1
 HV1126  NGVD 29              62.74   (m)          205.8    (f) LEVELING    3  
 HV1126  NGVD 29 (11/26/84)   62.741  (m)          205.84   (f) ADJUSTED    2 0
 HV1126
 HV1126.Superseded values are not recommended for survey control.
 HV1126
 HV1126.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1126.See file dsdata.pdf to determine how the superseded data were derived.
 HV1126
 HV1126_MARKER: DS = TRIANGULATION STATION DISK
 HV1126_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1126_STAMPING: ABBOTT 1958
 HV1126_MARK LOGO: CGS
 HV1126_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1126+STABILITY: SURFACE MOTION
 HV1126
 HV1126  HISTORY     - Date     Condition        Report By
 HV1126  HISTORY     - 1958     MONUMENTED       CGS
 HV1126  HISTORY     - 1958     GOOD             CGS
 HV1126  HISTORY     - 1970     GOOD             NGS
 HV1126  HISTORY     - 1970     GOOD             NGS
 HV1126
 HV1126                          STATION DESCRIPTION
 HV1126
 HV1126'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1126'STATION IS LOCATED ABOUT 10.0 MILES EAST-NORTHEAST OF THE CENTER
 HV1126'OF WASHINGTON AND ABOUT 0.2 MILE NORTH OF STATE HIGHWAY NO. 704,
 HV1126'IN THE COMMUNITY OF ARDMORE.  THE STATION IS 66 FEET WEST OF
 HV1126'APPROXIMATE CENTER LINE OF ROAD, 32 FEET SOUTH OF DRIVEWAY, 27
 HV1126'FEET EAST-SOUTHEAST OF PINE TREE AND 9 FEET NORTH OF WHITE WITNESS
 HV1126'POST.  THE MARK PROJECTS ABOUT 5 INCHES AND THE DISK IS
 HV1126'STAMPED ABBOTT 1958.
 HV1126'
 HV1126'R.M. NO. 1 IS 1 FOOT SOUTH OF FENCE LINE, 58 FEET NORTH OF
 HV1126'DRIVEWAY AND 72 FEET EAST OF THE APPROXIMATE CENTER LINE OF
 HV1126'ROAD.  THE MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED
 HV1126'ABBOTT NO 1 1958.
 HV1126'
 HV1126'R.M. NO. 2 IS 7 FEET NORTH OF FENCE LINE, 33 FEET SOUTH OF
 HV1126'DRIVEWAY AND 30 FEET SOUTHEAST OF 12 INCH TREE.
 HV1126'
 HV1126'TRAVERSE STATION MARY (AZIMUTH MARK) IS 20 FEET SOUTHWEST OF
 HV1126'APPROXIMATE CENTER LINE OF GALLATINS STREET, 28-1/2 FEET
 HV1126'EAST-SOUTHEAST OF THE APPROXIMATE CENTER LINE OF MARYWOOD STREET
 HV1126'AND 12-1/2 FEET EAST OF STREET SIGN POST.  THE MARK IS SET FLUSH
 HV1126'IN THE CURB AND THE DISK IS STAMPED MARY 1958.
 HV1126'
 HV1126'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 50 AND STATE
 HV1126'HIGHWAY NO. 564, (ABOUT 10 MILES EAST OF WASHINGTON), GO SOUTHWEST
 HV1126'ON U.S. HIGHWAY NO. 50 FOR 0.15 MILE TO A ROAD RIGHT, CONTINUE
 HV1126'AHEAD FOR 0.05 MILE TO LANHAM STATION ROAD ON LEFT, TURN LEFT AND
 HV1126'GO SOUTH FOR 0.05 MILE TO RAILROAD CROSSING, CONTINUE AHEAD
 HV1126'SOUTHERLY FOR 0.55 MILE TO A CROSSROAD, TURN RIGHT AND GO
 HV1126'SOUTHERLY FOR 0.75 MILE TO A DIRT STREET TO RIGHT AND STREET TO
 HV1126'LEFT INTO NEW HOUSING DEVELOPMENT, TURN RIGHT AND GO WEST FOR
 HV1126'0.05 MILE, TURN RIGHT AND GO NORTH FOR 0.05 MILE TO DRIVEWAY
 HV1126'AND STATION ON RIGHT AS DESCRIBED.
 HV1126'
 HV1126'TO REACH TRAVERSE STATION MARY 1958 (AZIMUTH MARK), FROM THE
 HV1126'JUNCTION OF U.S. HIGHWAY NO. 50 AND STATE HIGHWAY NO. 564, GO
 HV1126'SOUTHWEST OF U.S. HIGHWAY NO. 50 FOR 1.55 MILES TO A GRAVELED
 HV1126'STREET RIGHT (JUST BEFORE REACHING AN ATLANTIC AND ESSO GAS
 HV1126'STATIONS ON LEFT, TURN RIGHT AND GO WEST ON GRAVELED ROAD FOR
 HV1126'ABOUT 0.1 MILE TO SURFACE STREET, CONTINUE WESTERLY ON SURFACED
 HV1126'STREET FOR 0.05 MILE TO MARYWOOD STREET LEFT AND STATION AS
 HV1126'DESCRIBED.
 HV1126'
 HV1126'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 HV1126
 HV1126                          STATION RECOVERY (1958)
 HV1126
 HV1126'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV1126'1.4 MI S FROM LANHAM.
 HV1126'ABOUT 0.5 MILE SOUTHEAST ALONG THE LANHAM ROAD FROM THE
 HV1126'PENNSYLVANIA RAILROAD STATION AT LANHAM, THENCE 0.8 MILE SOUTH
 HV1126'ALONG WHITFIELD CHAPEL ROAD, THENCE 0.15 MILE SOUTHWEST ALONG
 HV1126'A DIRT STREET, ABOUT 200 FEET NORTH AND ACROSS THE DIRT STREET
 HV1126'FROM AN ORANGE COLORED, PAINTED HOUSE, 37 FEET EAST-NORTHEAST OF
 HV1126'POWER LINE POLE NO. 312106, 26 FEET EAST-SOUTHEAST OF A LONE
 HV1126'PINE TREE, 32 FEET SOUTH OF THE CENTER LINE OF A DRIVEWAY,
 HV1126'9 FEET NORTH OF A WHITE WOODEN WITNESS POST AND SET IN THE TOP
 HV1126'OF A CONCRETE POST PROJECTING 5 INCHES ABOVE THE GROUND.
 HV1126
 HV1126                          STATION RECOVERY (1970)
 HV1126
 HV1126'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV1126'THE STATION MARK, REFERENCE MARKS 1, 2 AND TRAVERSE STATION MARY,
 HV1126'USED AS AN AZIMUTH MARK WERE RECOVERED IN GOOD CONDITION.  A
 HV1126'DIFFERENCE IN THE DIRECTION TO ALL THE MARKS WAS NOTED.  DUE TO
 HV1126'ROAD CHANGES, A COMPLETE DESCRIPTION FOLLOWS.
 HV1126'
 HV1126'THE STATION IS ABOUT 5 MILES SOUTHEAST OF COLLEGE PARK, 3-1/2
 HV1126'MILES SOUTHWEST OF GLENDALE AND 1/2 MILE EAST OF INTERSTATE
 HV1126'HIGHWAY 495, ON PROPERTY OF A.W. ABBOTT, ADDRESS 4806 WHITFIELD
 HV1126'CHAPEL ROAD.
 HV1126'
 HV1126'TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY 495
 HV1126'AND STATE HIGHWAY 450, GO NORTHEAST AND EAST ON HIGHWAY 450 FOR 0.6
 HV1126'MILE TO WHITFIELD CHAPEL ROAD.  TURN RIGHT AND GO SOUTH ON
 HV1126'WHITFIELD CHAPEL ROAD FOR 1.7 MILES TO FAIRVIEW AVENUE.  TURN RIGHT
 HV1126'AND GO WEST ON FAIRVIEW AVENUE FOR 0.05 MILE TO JEFFERSON
 HV1126'STREET.  TURN RIGHT AND GO NORTH ON JEFFERSON STREET FOR 0.05
 HV1126'MILE TO A DRIVEWAY AND THE STATION ON THE RIGHT.  TO REACH
 HV1126'TRAVERSE STATION MARY FROM THE JUNCTION OF INTERSTATE
 HV1126'HIGHWAY 495 AND STATE HIGHWAY 450, GO WESTERLY ON HIGHWAY 450 FOR
 HV1126'1.5 MILES TO GALLATINS STREET.  TURN RIGHT AND GO NORTH ON
 HV1126'GALLATINS STREET FOR 0.15 MILE TO MARYWOOD STREET AND THE MARK
 HV1126'ON THE LEFT.
 HV1126'
 HV1126'STATION MARK IS A STANDARD DISK, STAMPED ABBOTT 1958, SET IN THE
 HV1126'TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 4 INCHES
 HV1126'ABOVE THE GROUND.  IT IS 58.0 FEET EAST OF THE CENTERLINE OF
 HV1126'JEFFERSON STREET, 11.5 FEET NORTH OF A FENCE AND 10.8 FEET NORTH
 HV1126'OF A WITNESS POST.
 HV1126'
 HV1126'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED ABBOTT NO 1 1958,
 HV1126'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT IS FLUSH
 HV1126'WITH THE GROUND SURFACE.  IT IS 66.0 FEET EAST OF THE CENTERLINE
 HV1126'OF JEFFERSON STREET, 28.0 FEET NORTH OF A FENCE AND ABOUT 3 FEET
 HV1126'LOWER THAN THE STATION.
 HV1126'
 HV1126'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED ABBOTT NO 2 1958,
 HV1126'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT IS FLUSH
 HV1126'WITH THE GROUND SURFACE.  IT IS 34.0 FEET SOUTH OF THE CENTERLINE
 HV1126'OF A DRIVEWAY, 13.3 FEET WEST OF THE NORTHWEST CORNER OF A SMALL
 HV1126'WOOD BUILDING, 7.5 FEET NORTH OF A FENCE AND ABOUT 2 FEET LOWER
 HV1126'THAN THE STATION.
 HV1126'
 HV1126'MARY 1958 IS A TRAVERSE STATION, STAMPED MARY 1958, CEMENTED IN
 HV1126'A DRILL HOLE IN A CONCRETE CURB.  IT IS 28.5 FEET EAST-SOUTHEAST
 HV1126'OF THE CENTERLINE OF MARYWOOD STREET, 20.0 FEET SOUTHWEST OF THE
 HV1126'CENTERLINE OF GALLATINS STREET AND 12.5 FEET EAST OF A STREET
 HV1126'SIGN POST.
 HV1126'
 HV1126'REFERENCE MARK 1 TO REFERENCE MARK 2 OBSTRUCTED.
 HV1126'
 HV1126'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV1126'3-1/2 MILES SOUTHWEST OF GLENDALE.
 HV1126
 HV1126                          STATION RECOVERY (1970)
 HV1126
 HV1126'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 HV1126'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4841 ***********************************************************************
 HV4841  DESIGNATION -  ABBOTT PB PP
 HV4841  PID         -  HV4841
 HV4841  STATE/COUNTY-  MD/MONTGOMERY
 HV4841  COUNTRY     -  US
 HV4841  USGS QUAD   -  FALLS CHURCH (2019)
 HV4841
 HV4841                         *CURRENT SURVEY CONTROL
 HV4841  ______________________________________________________________________
 HV4841* NAD 83(1993) POSITION- 38 57 51.80971(N) 077 07 48.53679(W)   ADJUSTED
 HV4841* NAVD 88 ORTHO HEIGHT -   107.    (meters)      351.    (feet) SCALED
 HV4841  ______________________________________________________________________
 HV4841  GEOID HEIGHT    -        -31.857 (meters)                     GEOID18
 HV4841  LAPLACE CORR    -         -1.95  (seconds)                    DEFLEC18
 HV4841  HORZ ORDER      -  SECOND
 HV4841
 HV4841.The horizontal coordinates were established by classical geodetic methods
 HV4841.and adjusted by the National Geodetic Survey in November 1994.
 HV4841
 HV4841.The orthometric height was scaled from a topographic map.
 HV4841
 HV4841.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4841.GEOID18 height accuracy estimate available here.
 HV4841
 HV4841.Click photographs - Photos may exist for this station.
 HV4841
 HV4841.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4841
 HV4841. The following values were computed from the NAD 83(1993) position.
 HV4841
 HV4841;                    North         East     Units Scale Factor Converg.
 HV4841;SPC MD       -   144,061.367   388,720.558   MT  0.99995104   -0 04 54.1
 HV4841;SPC MD       -   472,641.33  1,275,327.36   sFT  0.99995104   -0 04 54.1
 HV4841;SPC VA N     - 2,144,934.014 3,618,716.349   MT  0.99996667   +0 51 17.8
 HV4841;SPC VA N     - 7,037,171.01 11,872,405.22   sFT  0.99996667   +0 51 17.8
 HV4841;UTM  18      - 4,314,982.996   315,445.248   MT  1.00001942   -1 20 23.6
 HV4841
 HV4841!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4841!SPC MD       -   0.99998825  x   0.99995104  =   0.99993929
 HV4841!SPC VA N     -   0.99998825  x   0.99996667  =   0.99995492
 HV4841!UTM  18      -   0.99998825  x   1.00001942  =   1.00000767
 HV4841
 HV4841:                Primary Azimuth Mark                     Grid Az
 HV4841:SPC MD       -  SUMNER PB PP 1933                        156 12 23.8
 HV4841:SPC VA N     -  SUMNER PB PP 1933                        155 16 11.9
 HV4841:UTM  18      -  SUMNER PB PP 1933                        157 27 53.3
 HV4841
 HV4841_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1544514982(NAD 83)
 HV4841
 HV4841|---------------------------------------------------------------------|
 HV4841| PID    Reference Object                     Distance      Geod. Az  |
 HV4841|                                                           dddmmss.s |
 HV4841| HV4848 SUMNER PB PP 1933                   APPROX. 1.1 KM 1560729.7 |
 HV4841|---------------------------------------------------------------------|
 HV4841
 HV4841                          SUPERSEDED SURVEY CONTROL
 HV4841
 HV4841  NAD 83(1991)-  38 57 51.80885(N)    077 07 48.53845(W) AD(       ) 2
 HV4841  NAD 83(1986)-  38 57 51.80855(N)    077 07 48.54797(W) AD(       ) 2
 HV4841  NAD 27      -  38 57 51.41200(N)    077 07 49.61900(W) AD(       ) 2
 HV4841
 HV4841.Superseded values are not recommended for survey control.
 HV4841
 HV4841.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4841.See file dsdata.pdf to determine how the superseded data were derived.
 HV4841
 HV4841_MARKER: DD = SURVEY DISK
 HV4841_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV4841_MARK LOGO: PBPP
 HV4841_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4841
 HV4841  HISTORY     - Date     Condition        Report By
 HV4841  HISTORY     - 1930     MONUMENTED       PBPP
 HV4841  HISTORY     - 1938     GOOD             CGS
 HV4841
 HV4841                          STATION DESCRIPTION
 HV4841
 HV4841'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV4841'STATION IS ON MARYLAND SIDE OF POTOMAC RIVER IN MONTGOMERY
 HV4841'COUNTY, ON N SIDE OF CONDUIT ROAD, MILES UP WINDING COUNTY MACADAM
 HV4841'ROADWAY.  THE ROAD IS MADE OF OLD MACADAM AND GRAVEL AND IS
 HV4841'APPROXIMATELY 0.1 MILE E OF ROAD MARKER 8 M. TO GREAT FALLS.  THE
 HV4841'PROPERTY OF JAMES FONTAINE, A LARGE STONE HOUSE, STANDS ON HILL
 HV4841'ABOUT 60 FEET ABOVE CONDUIT ROAD.
 HV4841'
 HV4841'THE STATION IS 83 FEET DUE S OF ABBOTT-SOLBERG FENCE, AND IS ON
 HV4841'SW EDGE OF 50-FOOT KNOLL OF MARBLE-QUARTZ ROCK.  A DOUBLE OAK,
 HV4841'WITH ONE LIMB DOUBLING 10 FEET ABOVE GROUND IS 54 FEET N OF
 HV4841'STATION.  THE SE CORNER OF HOUSE BELONGING TO MR. SOLBERG IS 131
 HV4841'FEET N OF THE STATION.  THE STATION IS 188 FEET E OF COUNTY ROAD.
 HV4841'
 HV4841'THE STATION IS MARKED WITH A STANDARD P.B. AND P.P. BRASS DISK
 HV4841'SET IN TILE PIPE OF CONCRETE AND IS LOCATED ON PROPERTY OF
 HV4841'W.J. ABBOTT.
 HV4841'
 HV4841'THE AZIMUTH MARK IS APPROXIMATELY 200 FEET SW OF MAIN STATION
 HV4841'AND IS 50 FEET FROM CENTER LINE OF COUNTY ROAD AND 115 FEET S OF
 HV4841'CORNER OF SHEET IRON GARAGE.
 HV4841
 HV4841                          STATION RECOVERY (1938)
 HV4841
 HV4841'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV4841'STATION MARK FOUND.  AZIMUTH MARK NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1128 ***********************************************************************
 HV1128  DESIGNATION -  ABBOTT RM 1
 HV1128  PID         -  HV1128
 HV1128  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1128  COUNTRY     -  US
 HV1128  USGS QUAD   -  LANHAM (2016)
 HV1128
 HV1128                         *CURRENT SURVEY CONTROL
 HV1128  ______________________________________________________________________
 HV1128* NAD 83(1986) POSITION- 38 56 35.22   (N) 076 51 18.18   (W)   HD_HELD1
 HV1128* NAVD 88 ORTHO HEIGHT -    61.028 (meters)      200.22  (feet) ADJUSTED
 HV1128  ______________________________________________________________________
 HV1128  GEOID HEIGHT    -        -32.399 (meters)                     GEOID18
 HV1128  DYNAMIC HEIGHT  -         60.995 (meters)      200.11  (feet) COMP
 HV1128  MODELED GRAVITY -    980,087.4   (mgal)                       NAVD 88
 HV1128
 HV1128  VERT ORDER      -  SECOND    CLASS 0
 HV1128
 HV1128.The horizontal coordinates were determined by differentially corrected
 HV1128.hand held GPS observations or other comparable positioning techniques
 HV1128.and have an estimated accuracy of +/- 3 meters.
 HV1128
 HV1128.The orthometric height was determined by differential leveling and
 HV1128.adjusted by the NATIONAL GEODETIC SURVEY
 HV1128.in June 1991.
 HV1128
 HV1128.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1128.GEOID18 height accuracy estimate available here.
 HV1128
 HV1128.Click photographs - Photos may exist for this station.
 HV1128
 HV1128.The dynamic height is computed by dividing the NAVD 88
 HV1128.geopotential number by the normal gravity value computed on the
 HV1128.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1128.degrees latitude (g = 980.6199 gals.).
 HV1128
 HV1128.The modeled gravity was interpolated from observed gravity values.
 HV1128
 HV1128;                    North         East    Units  Estimated Accuracy
 HV1128;SPC MD       -   141,701.6     412,565.9     MT  (+/- 3 meters HH1 GPS) 
 HV1128
 HV1128_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3923312100(NAD 83)
 HV1128
 HV1128                          SUPERSEDED SURVEY CONTROL
 HV1128
 HV1128  NGVD 29 (11/26/84)   61.267  (m)          201.01   (f) ADJUSTED    2 0
 HV1128
 HV1128.Superseded values are not recommended for survey control.
 HV1128
 HV1128.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1128.See file dsdata.pdf to determine how the superseded data were derived.
 HV1128
 HV1128_MARKER: DR = REFERENCE MARK DISK
 HV1128_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1128_STAMPING: ABBOTT NO 1 1958
 HV1128_MARK LOGO: CGS
 HV1128_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1128+STABILITY: SURFACE MOTION
 HV1128
 HV1128  HISTORY     - Date     Condition        Report By
 HV1128  HISTORY     - 1958     MONUMENTED       CGS
 HV1128  HISTORY     - 1970     GOOD             NGS
 HV1128
 HV1128                          STATION DESCRIPTION
 HV1128
 HV1128'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1128'1.4 MI S FROM LANHAM.
 HV1128'ABOUT 0.5 MILE SOUTHEAST ALONG LANHAM STATION ROAD FROM THE
 HV1128'PENNSYLVANIA RAILROAD STATION AT LANHAM, THENCE 0.8 MILE SOUTH
 HV1128'ALONG THE WHITFIELD CHAPEL ROAD, THENCE 0.15 MILE SOUTHWEST ALONG
 HV1128'A DIRT STREET, 58 FEET NORTH OF THE CENTER LINE OF A DRIVEWAY,
 HV1128'88.5 FEET WEST-SOUTHWEST OF THE STATION, 1 FOOT SOUTH OF A FENCE
 HV1128'LINE, SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES
 HV1128'ABOVE THE GROUND.
 HV1128
 HV1128                          STATION RECOVERY (1970)
 HV1128
 HV1128'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 HV1128'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1127 ***********************************************************************
 HV1127  DESIGNATION -  ABBOTT RM 2
 HV1127  PID         -  HV1127
 HV1127  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1127  COUNTRY     -  US
 HV1127  USGS QUAD   -  LANHAM (2016)
 HV1127
 HV1127                         *CURRENT SURVEY CONTROL
 HV1127  ______________________________________________________________________
 HV1127* NAD 83(1986) POSITION- 38 56 34.37   (N) 076 51 17.17   (W)   HD_HELD1
 HV1127* NAVD 88 ORTHO HEIGHT -    62.379 (meters)      204.66  (feet) ADJUSTED
 HV1127  ______________________________________________________________________
 HV1127  GEOID HEIGHT    -        -32.400 (meters)                     GEOID18
 HV1127  DYNAMIC HEIGHT  -         62.345 (meters)      204.54  (feet) COMP
 HV1127  MODELED GRAVITY -    980,087.4   (mgal)                       NAVD 88
 HV1127
 HV1127  VERT ORDER      -  SECOND    CLASS 0
 HV1127
 HV1127.The horizontal coordinates were determined by differentially corrected
 HV1127.hand held GPS observations or other comparable positioning techniques
 HV1127.and have an estimated accuracy of +/- 3 meters.
 HV1127
 HV1127.The orthometric height was determined by differential leveling and
 HV1127.adjusted by the NATIONAL GEODETIC SURVEY
 HV1127.in June 1991.
 HV1127
 HV1127.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1127.GEOID18 height accuracy estimate available here.
 HV1127
 HV1127.Click photographs - Photos may exist for this station.
 HV1127
 HV1127.The dynamic height is computed by dividing the NAVD 88
 HV1127.geopotential number by the normal gravity value computed on the
 HV1127.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1127.degrees latitude (g = 980.6199 gals.).
 HV1127
 HV1127.The modeled gravity was interpolated from observed gravity values.
 HV1127
 HV1127;                    North         East    Units  Estimated Accuracy
 HV1127;SPC MD       -   141,675.4     412,590.3     MT  (+/- 3 meters HH1 GPS) 
 HV1127
 HV1127_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3925712073(NAD 83)
 HV1127
 HV1127                          SUPERSEDED SURVEY CONTROL
 HV1127
 HV1127  NGVD 29 (11/26/84)   62.618  (m)          205.44   (f) ADJUSTED    2 0
 HV1127
 HV1127.Superseded values are not recommended for survey control.
 HV1127
 HV1127.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1127.See file dsdata.pdf to determine how the superseded data were derived.
 HV1127
 HV1127_MARKER: DR = REFERENCE MARK DISK
 HV1127_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1127_STAMPING: ABBOTT NO 2 1958
 HV1127_MARK LOGO: CGS
 HV1127_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1127+STABILITY: SURFACE MOTION
 HV1127
 HV1127  HISTORY     - Date     Condition        Report By
 HV1127  HISTORY     - 1958     MONUMENTED       CGS
 HV1127  HISTORY     - 1970     GOOD             NGS
 HV1127
 HV1127                          STATION DESCRIPTION
 HV1127
 HV1127'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1127'1.4 MI S FROM LANHAM.
 HV1127'ABOUT 0.5 MILE SOUTHEAST ALONG THE LANHAM STATION ROAD FROM
 HV1127'THE PENNSYLVANIA RAILROAD STATION AT LANHAM, THENCE 0.8 MILE
 HV1127'SOUTH ALONG THE WHITFIELD CHAPEL ROAD, THENCE 0.15 MILE
 HV1127'SOUTHWEST ALONG A DIRT STREET, 33 FEET SOUTH OF THE CENTER
 HV1127'LINE OF A DRIVEWAY, 30 FEET SOUTHEAST OF A 12-INCH PINE TREE,
 HV1127'7 FEET NORTH OF A FENCE LINE AND SET IN THE TOP OF A CONCRETE
 HV1127'POST PROJECTING 3 INCHES ABOVE THE GROUND.
 HV1127
 HV1127                          STATION RECOVERY (1970)
 HV1127
 HV1127'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 HV1127'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5954 ***********************************************************************
 HV5954  DESIGNATION -  ABEL 1901
 HV5954  PID         -  HV5954
 HV5954  STATE/COUNTY-  MD/DORCHESTER
 HV5954  COUNTRY     -  US
 HV5954  USGS QUAD   -  CHURCH CREEK (2016)
 HV5954
 HV5954                         *CURRENT SURVEY CONTROL
 HV5954  ______________________________________________________________________
 HV5954* NAD 83(1991) POSITION- 38 33 47.87359(N) 076 10 41.38682(W)   ADJUSTED
 HV5954* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5954  ______________________________________________________________________
 HV5954  GEOID HEIGHT    -        -34.842 (meters)                     GEOID18
 HV5954  LAPLACE CORR    -         -4.59  (seconds)                    DEFLEC18
 HV5954  HORZ ORDER      -  THIRD
 HV5954
 HV5954.The horizontal coordinates were established by classical geodetic methods
 HV5954.and adjusted by the National Geodetic Survey in January 1992.
 HV5954
 HV5954.The orthometric height was scaled from a topographic map.
 HV5954
 HV5954.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5954.GEOID18 height accuracy estimate available here.
 HV5954
 HV5954.Click photographs - Photos may exist for this station.
 HV5954
 HV5954.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5954
 HV5954. The following values were computed from the NAD 83(1991) position.
 HV5954
 HV5954;                    North         East     Units Scale Factor Converg.
 HV5954;SPC MD       -    99,852.025   471,624.829   MT  0.99996464   +0 30 56.9
 HV5954;SPC MD       -   327,597.85  1,547,322.46   sFT  0.99996464   +0 30 56.9
 HV5954;UTM  18      - 4,268,975.059   397,355.033   MT  0.99972975   -0 44 04.2
 HV5954
 HV5954!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5954!SPC MD       -   1.00000550  x   0.99996464  =   0.99997014
 HV5954!UTM  18      -   1.00000550  x   0.99972975  =   0.99973525
 HV5954
 HV5954:                Primary Azimuth Mark                     Grid Az
 HV5954:SPC MD       -  CAIN 1901                                180 43 40.6
 HV5954:UTM  18      -  CAIN 1901                                181 58 41.7
 HV5954
 HV5954_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9735568975(NAD 83)
 HV5954
 HV5954|---------------------------------------------------------------------|
 HV5954| PID    Reference Object                     Distance      Geod. Az  |
 HV5954|                                                           dddmmss.s |
 HV5954| HV5913 VAN DUYNE 1901                      APPROX. 0.5 KM 0242253.2 |
 HV5954| HV5941 CAIN 1901                           438.060 METERS 1811437.5 |
 HV5954| HV5912 NOAH                                465.885 METERS 3350213.7 |
 HV5954|---------------------------------------------------------------------|
 HV5954
 HV5954                          SUPERSEDED SURVEY CONTROL
 HV5954
 HV5954  NAD 83(1986)-  38 33 47.87094(N)    076 10 41.40242(W) AD(       ) 3
 HV5954  NAD 27      -  38 33 47.46900(N)    076 10 42.59200(W) AD(       ) 3
 HV5954  USSD        -  38 33 47.87800(N)    076 10 42.41600(W) AD(       ) 3
 HV5954
 HV5954.Superseded values are not recommended for survey control.
 HV5954
 HV5954.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5954.See file dsdata.pdf to determine how the superseded data were derived.
 HV5954
 HV5954
 HV5954  HISTORY     - Date     Condition        Report By
 HV5954  HISTORY     - 1901     MONUMENTED       CGS
 HV5954  HISTORY     - 1908     GOOD             CGS
 HV5954
 HV5954                          STATION DESCRIPTION
 HV5954
 HV5954'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV5954'ON THE SE SIDE OF UPPER PART OF LITTLE CHOPTANK RIVER, ON POINT AT
 HV5954'E SIDE OF ENTRANCE TO FIRST CREEK E OF SMITHS COVE.  16 METERS NW
 HV5954'OF A MARKED CEDAR, AND 9 METERS N OF WHITE STAKE.  STATION MARK IS
 HV5954'NAIL IN CEDAR STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6797 ***********************************************************************
 HV6797  DESIGNATION -  ABELL
 HV6797  PID         -  HV6797
 HV6797  STATE/COUNTY-  MD/ST MARYS
 HV6797  COUNTRY     -  US
 HV6797  USGS QUAD   -  HOLLYWOOD (2016)
 HV6797
 HV6797                         *CURRENT SURVEY CONTROL
 HV6797  ______________________________________________________________________
 HV6797* NAD 83(1993) POSITION- 38 16 06.66500(N) 076 37 20.00068(W)   ADJUSTED
 HV6797* NAVD 88 ORTHO HEIGHT -    37.    (meters)      121.    (feet) SCALED
 HV6797  ______________________________________________________________________
 HV6797  GEOID HEIGHT    -        -33.955 (meters)                     GEOID18
 HV6797  LAPLACE CORR    -         -5.65  (seconds)                    DEFLEC18
 HV6797  HORZ ORDER      -  FIRST
 HV6797
 HV6797.The horizontal coordinates were established by classical geodetic methods
 HV6797.and adjusted by the National Geodetic Survey in November 1994.
 HV6797
 HV6797.The orthometric height was scaled from a topographic map.
 HV6797
 HV6797.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6797.GEOID18 height accuracy estimate available here.
 HV6797
 HV6797.Click photographs - Photos may exist for this station.
 HV6797
 HV6797.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6797
 HV6797. The following values were computed from the NAD 83(1993) position.
 HV6797
 HV6797;                    North         East     Units Scale Factor Converg.
 HV6797;SPC MD       -    66,876.696   433,059.875   MT  1.00000563   +0 14 13.6
 HV6797;SPC MD       -   219,411.29  1,420,797.27   sFT  1.00000563   +0 14 13.6
 HV6797;SPC VA N     - 2,068,484.630 3,664,309.726   MT  0.99996682   +1 10 19.0
 HV6797;SPC VA N     - 6,786,353.32 12,021,989.49   sFT  0.99996682   +1 10 19.0
 HV6797;UTM  18      - 4,236,852.772   358,089.638   MT  0.99984802   -1 00 17.6
 HV6797
 HV6797!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6797!SPC MD       -   0.99999957  x   1.00000563  =   1.00000520
 HV6797!SPC VA N     -   0.99999957  x   0.99996682  =   0.99996639
 HV6797!UTM  18      -   0.99999957  x   0.99984802  =   0.99984759
 HV6797
 HV6797:                Primary Azimuth Mark                     Grid Az
 HV6797:SPC MD       -  ABELL AZ MK 2                            024 43 38.3
 HV6797:SPC VA N     -  ABELL AZ MK 2                            023 47 32.9
 HV6797:UTM  18      -  ABELL AZ MK 2                            025 58 09.5
 HV6797
 HV6797_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5808936852(NAD 83)
 HV6797
 HV6797|---------------------------------------------------------------------|
 HV6797| PID    Reference Object                     Distance      Geod. Az  |
 HV6797|                                                           dddmmss.s |
 HV6797| CX2027 ABELL RM 3                           30.470 METERS 01649     |
 HV6797| CX2025 ABELL RM 1                           27.118 METERS 01833     |
 HV6797| HV6798 ABELL AZ MK 2                       487.761 METERS 0245751.9 |
 HV6797| CX2024 ABELL AZ MK                                        1841408.2 |
 HV6797| CX2026 ABELL RM 2                           32.382 METERS 27331     |
 HV6797| CX2028 ABELL RM 4                           21.734 METERS 31037     |
 HV6797| HV6830 LEONARDTOWN WATER TANK              APPROX. 3.2 KM 3370125.3 |
 HV6797| HV6832 LEONARDTOWN CATH CH SPIRE           APPROX. 3.1 KM 3373521.8 |
 HV6797|---------------------------------------------------------------------|
 HV6797
 HV6797                          SUPERSEDED SURVEY CONTROL
 HV6797
 HV6797  NAD 83(1991)-  38 16 06.66375(N)    076 37 20.00291(W) AD(       ) 1
 HV6797  NAD 83(1986)-  38 16 06.66465(N)    076 37 20.01616(W) AD(       ) 1
 HV6797  NAD 27      -  38 16 06.20400(N)    076 37 21.16700(W) AD(       ) 1
 HV6797
 HV6797.Superseded values are not recommended for survey control.
 HV6797
 HV6797.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6797.See file dsdata.pdf to determine how the superseded data were derived.
 HV6797
 HV6797_MARKER: DS = TRIANGULATION STATION DISK
 HV6797_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6797_STAMPING: ABELL 1942
 HV6797_MARK LOGO: CGS
 HV6797_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6797+STABILITY: SURFACE MOTION
 HV6797
 HV6797  HISTORY     - Date     Condition        Report By
 HV6797  HISTORY     - 1942     MONUMENTED       CGS
 HV6797  HISTORY     - 1958     GOOD             CGS
 HV6797  HISTORY     - 1979     GOOD             NGS
 HV6797
 HV6797                          STATION DESCRIPTION
 HV6797
 HV6797'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6797'THE STATION IS LOCATED ABOUT 2 MILES SE OF LEONARDTOWN, IN THE
 HV6797'YARD OF A TENANT FARMER, ON LAND OWNED BY C.E. ABELL.  IT IS
 HV6797'ABOUT 100 FEET W OF THE HOUSE, 80 FEET S OF THE DRIVEWAY, AND 25
 HV6797'FEET W OF THE CENTER OF THE ROAD PAST THE FARMHOUSE.  IT IS
 HV6797'STAMPED ABELL 1942 AND IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV6797'
 HV6797'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 HV6797'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HV6797'
 HV6797'REFERENCE MARK NO.1 IS ON THE N SIDE OF THE DRIVEWAY AND 1 FOOT S
 HV6797'OF A WOVEN WIRE FENCE.  IT PROJECTS 2 INCHES AND IS STAMPED ABELL
 HV6797'NO.1 1942.
 HV6797'
 HV6797'REFERENCE MARK NO.2 IS AT THE SE CORNER OF A CHICKEN HOUSE.  IT
 HV6797'PROJECTS 6 INCHES AND IS STAMPED ABELL NO.2 1942.
 HV6797'
 HV6797'THE AZIMUTH MARK IS LOCATED IN THE YARD OF A PAROCHIAL SCHOOL.
 HV6797'IT IS ABOUT 63 FEET SW OF THE SW CORNER OF THE SCHOOL BUILDING AND
 HV6797'5 FEET W OF THE BOYS OUT BUILDING.
 HV6797'
 HV6797'TO REACH THE AZIMUTH MARK FROM THE STATION CONTINUE PAST THE
 HV6797'STATION ON THE ONLY THROUGH ROAD FOR 0.3 MILE.  THEN LEFT FOR 0.5
 HV6797'MILE TO A PAVED ROAD.  THENCE RIGHT 0.25 MILE TO THE SCHOOLHOUSE
 HV6797'ON THE LEFT AND THE AZIMUTH MARK.
 HV6797'
 HV6797'TO REACH THE STATION FROM THE GREEN IN LEONARDTOWN GO SE ON STATE
 HV6797'HIGHWAY 5 FOR 1.8 MILES TO A PAVED ROAD RIGHT.  TURN RIGHT AND GO
 HV6797'0.25 MILE TO A DIRT ROAD RIGHT.  TURN RIGHT ON THE DIRT ROAD AND
 HV6797'GO 0.25 MILE TO A FORKS.  TAKE LEFT FORK, DIRT ROAD, AND GO 0.3
 HV6797'MILE TO A 2-STORY WHITE HOUSE ON THE RIGHT AND THE STATION.
 HV6797'
 HV6797'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT HEWITT.
 HV6797'
 HV6797'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT JACOBSON.
 HV6797'
 HV6797'A 15-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SEARS.
 HV6797
 HV6797                          STATION RECOVERY (1958)
 HV6797
 HV6797'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6797'THE STATION MARK, AZIMUTH MARK AND REFERENCE MARK WERE RECOVERED
 HV6797'IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION BY G.W.L. IS ADEQUATE
 HV6797'WITH THE FOLLOWING ADDITIONS--
 HV6797'
 HV6797'THE STATION IS 100 FT. E OF A HOUSE IN RUINS, INSTEAD OF 100 FT. W.
 HV6797'
 HV6797'REFERENCE MARK 1 LIES 91.7 FT. S OF THE SW CORNER OF A WHITE
 HV6797'SHINGLE HOUSE, 64.9 FT. SW OF POWER POLE NO. 23, AND 27 FT. FROM
 HV6797'THE CENTERLINE OF THE ROAD.
 HV6797'
 HV6797'REFERENCE MARK 2 LIES 43.5 FT. S-SW OF THE BRICK CHIMNEY OF THE
 HV6797'HOUSE IN RUINS.
 HV6797
 HV6797                          STATION RECOVERY (1979)
 HV6797
 HV6797'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 HV6797'THE STATION MARK WAS RECOVERED AND FOUND IN GOOD CONDITION AND THERE
 HV6797'WAS NO LOCAL DISPLACEMENT OF THE SURROUNDING IMMEDIATE AREA OF THE
 HV6797'MARK.  BOTH REFERENCE MARKS WERE FOUND DESTROYED.  A NEW HOUSE HAS
 HV6797'BEEN BUILT WHERE THE AZIMUTH MARK WAS LOCATED AND NO EVIDENCE OF THE
 HV6797'AZIMUTH MARK WAS FOUND.  TWO NEW REFERENCE MARKS AND A NEW AZIMUTH
 HV6797'MARK WAS ESTABLISHED.
 HV6797'
 HV6797'A COMPLETE NEW DESCRIPTION FOLLOWS.
 HV6797'
 HV6797'THE STATION IS LOCATED ABOUT 2 MILES SOUTHEAST OF LEONARDTOWN, 1/4
 HV6797'MILE EAST OF THE BRETON BAY AND ON PROPERTY OWNED BY MR. THOMAS
 HV6797'ABELL, ROUTE 1, LEONARDTOWN, MARYLAND.  TELEPHONE NUMBER 301 475 9658.
 HV6797'
 HV6797'TO REACH THE STATION FROM THE GREEN AT THE INTERSECTION OF WASHINGTON
 HV6797'STREET AND FENWICK STREET IN LEONARDTOWN, GO SOUTHEAST ON STATE
 HV6797'HIGHWAY 5 FOR 1.8 MILES TO STATE HIGHWAY 244.  TURN LEFT AND GO WEST
 HV6797'ON STATE HIGHWAY 244 FOR 0.25 MILE TO A FORK.  BEAR RIGHT AND GO WEST
 HV6797'ON A GRAVELED ROAD FOR 0.25 MILE TO A FORK AT A WHITE BARN AND THE
 HV6797'AZIMUTH MARK 0.05 MILE WEST OF THE FORK ON THE SOUTH SIDE OF A PAVED
 HV6797'ROAD.  TURN LEFT AND GO SOUTH ON A DIRT ROAD FOR 0.3 MILE TO MR.
 HV6797'ABELLS HOME ON THE RIGHT AND THE STATION.
 HV6797'
 HV6797'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 HV6797'STAMPED---ABELL 1942---SET INTO THE TOP OF A SQUARE CONCRETE
 HV6797'MONUMENT 25 CM (10 INCHES) ON SIDE RECESSED 5 CM (2 INCHES) BELOW THE
 HV6797'GROUND LOCATED 36.9 METERS (121 FEET) SE FROM THE SE CORNER OF MR.
 HV6797'ABELLS HOME, 23.8 METERS (78 FEET) S FROM THE CENTER OF A DRIVE
 HV6797'LEADING TO THE HOUSE, 18.6 METERS (61 FEET) SW FROM A POWERLINE POLE
 HV6797'WITH A TRANSFORMER, 7.6 METERS (25 FEET) W FROM THE DIRT ROAD, AND
 HV6797'0.76 METER (2.5 FEET) W FROM A WITNESS POST.
 HV6797'
 HV6797'REFERENCE MARK NO. 3 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HV6797'STAMPED---ABELL 1942 NO 3 1979---CEMENTED IN A DRILL HOLE IN THE
 HV6797'SOUTH CURB ALONG A DRIVE LEADING TO MR. ABELLS HOUSE.  IT PROJECTS 1
 HV6797'FOOT AND IS LOCATED 39.3 METERS (129 FEET) W FROM THE CENTER OF THE
 HV6797'DIRT ROAD, 17.53 METERS (57.5 FEET) SE FROM THE SW CORNER OF MR.
 HV6797'ABELLS HOUSE, 15.39 METERS (50.5 FEET) SW FROM THE SE CORNER OF THE
 HV6797'HOUSE, 2.4 METERS (8 FEET) S FROM THE CENTER OF THE DRIVE, AND 1.2
 HV6797'METERS (4 FEET) LOWER THAN THE STATION.
 HV6797'
 HV6797'REFERENCE MARK NO. 4 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HV6797'STAMPED---ABELL 1942 NO 4 1979---CEMENTED IN A DRILL HOLE IN A CURB
 HV6797'ALONG THE SOUTH SIDE OF THE DRIVE LEADING TO MR. ABELLS HOME.  IT
 HV6797'PROJECTS 1 FOOT AND IS LOCATED 32.9 METERS (108 FEET) S FROM THE SW
 HV6797'CORNER OF A WHITE SHINGLED HOUSE, 25.6 METERS (84 FEET) SE FROM THE
 HV6797'SE CORNER OF MR. ABELLS HOUSE, 24.4 METERS (80 FEET) SW FROM A
 HV6797'POWERLINE POLE NUMBERED 23, 9.8 METERS (32 FEET) W FROM THE CENTER OF
 HV6797'THE DIRT ROAD, AND 0.3 METER (1 FOOT) HIGHER THAN THE STATION.
 HV6797'
 HV6797'AZIMUTH MARK NO. 2 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HV6797'STAMPED---ABELL 1942 AZ 2 1979---SET INTO THE TOP OF A ROUND
 HV6797'CONCRETE MONUMENT 25 CM (10 INCHES) IN DIAMETER PROJECTING 3 CM (1
 HV6797'INCH) ABOVE THE GROUND LOCATED 10.4 METERS (34 FEET) S FROM THE
 HV6797'CENTER OF THE PAVED ROAD, 1.68 METERS (5.5 FEET) E FROM A POWERLINE
 HV6797'POLE WITH NO NUMBER, 0.46 METER (1.5 FEET) S FROM A WITNESS POST, AND
 HV6797'0.3 METER (1 FOOT) S FROM A WIRE FENCE.
 HV6797'
 HV6797'TO REACH THE AZIMUTH MARK FROM FROM THE STATION, GO NORTH ON THE DIRT
 HV6797'ROAD FOR 0.3 MILE TO THE FORK.  TURN LEFT AND GO WEST ON THE PAVED
 HV6797'ROAD FOR 0.05 MILE TO THE MARK ON THE LEFT, ABOUT 50 FEET WEST OF THE
 HV6797'HIGHEST POINT OF A CUTBANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4937 ***********************************************************************
 JV4937  DESIGNATION -  ABERDEEN NE BASE
 JV4937  PID         -  JV4937
 JV4937  STATE/COUNTY-  MD/HARFORD
 JV4937  COUNTRY     -  US
 JV4937  USGS QUAD   -  PERRYMAN (2016)
 JV4937
 JV4937                         *CURRENT SURVEY CONTROL
 JV4937  ______________________________________________________________________
 JV4937* NAD 83(1991) POSITION- 39 28 33.16084(N) 076 10 56.04088(W)   ADJUSTED
 JV4937* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 JV4937  ______________________________________________________________________
 JV4937  GEOID HEIGHT    -        -33.169 (meters)                     GEOID18
 JV4937  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 JV4937  HORZ ORDER      -  FIRST
 JV4937
 JV4937.The horizontal coordinates were established by classical geodetic methods
 JV4937.and adjusted by the National Geodetic Survey in January 1992.
 JV4937
 JV4937.The orthometric height was scaled from a topographic map.
 JV4937
 JV4937.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4937.GEOID18 height accuracy estimate available here.
 JV4937
 JV4937.Click photographs - Photos may exist for this station.
 JV4937
 JV4937.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4937
 JV4937. The following values were computed from the NAD 83(1991) position.
 JV4937
 JV4937;                    North         East     Units Scale Factor Converg.
 JV4937;SPC MD       -   201,151.911   470,362.578   MT  1.00000463   +0 30 47.7
 JV4937;SPC MD       -   659,945.89  1,543,181.22   sFT  1.00000463   +0 30 47.7
 JV4937;UTM  18      - 4,370,254.439   398,316.197   MT  0.99972730   -0 45 06.0
 JV4937
 JV4937!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4937!SPC MD       -   1.00000336  x   1.00000463  =   1.00000799
 JV4937!UTM  18      -   1.00000336  x   0.99972730  =   0.99973066
 JV4937
 JV4937:                Primary Azimuth Mark                     Grid Az
 JV4937:SPC MD       -  ABERDEEN NE BASE AZ MK                   206 57 40.9
 JV4937:UTM  18      -  ABERDEEN NE BASE AZ MK                   208 13 34.6
 JV4937
 JV4937_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9831670254(NAD 83)
 JV4937
 JV4937|---------------------------------------------------------------------|
 JV4937| PID    Reference Object                     Distance      Geod. Az  |
 JV4937|                                                           dddmmss.s |
 JV4937| CA9855 ABERDEEN NE BASE RM 3                27.088 METERS 02303     |
 JV4937| CA9854 ABERDEEN NE BASE RM 2                28.068 METERS 02956     |
 JV4937| JV4943 SWAN MEADOW WATER TANK              APPROX. 3.2 KM 0354521.4 |
 JV4937| JV4946 ABERDEEN PROVING GROUNDS TANK       APPROX. 4.5 KM 0782949.7 |
 JV4937| CA9853 ABERDEEN NE BASE RM 1                30.358 METERS 11210     |
 JV4937| JV4947 ABERDEEN PROVING GR E HIGH TWR      APPROX.11.3 KM 2053914.1 |
 JV4937| JV4931 ABERDEEN PROVING GR W HIGH TWR      APPROX.11.4 KM 2062432.4 |
 JV4937| CA9852 ABERDEEN NE BASE AZ MK                             2072828.6 |
 JV4937| JV4797 STEPNEY STONEY FOREST FIRE TWR      APPROX. 6.4 KM 3154237.0 |
 JV4937|---------------------------------------------------------------------|
 JV4937
 JV4937                          SUPERSEDED SURVEY CONTROL
 JV4937
 JV4937  NAD 83(1986)-  39 28 33.15447(N)    076 10 56.04731(W) AD(       ) 1
 JV4937  NAD 27      -  39 28 32.76400(N)    076 10 57.21700(W) AD(       ) 1
 JV4937
 JV4937.Superseded values are not recommended for survey control.
 JV4937
 JV4937.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4937.See file dsdata.pdf to determine how the superseded data were derived.
 JV4937
 JV4937_MARKER: DS = TRIANGULATION STATION DISK
 JV4937_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4937_STAMPING: ABERDEEN NE BASE 1949
 JV4937_MARK LOGO: CGS
 JV4937_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4937+STABILITY: SURFACE MOTION
 JV4937
 JV4937  HISTORY     - Date     Condition        Report By
 JV4937  HISTORY     - 1949     MONUMENTED       CGS
 JV4937  HISTORY     - 1958     GOOD             CGS
 JV4937
 JV4937                          STATION DESCRIPTION
 JV4937
 JV4937'DESCRIBED BY COAST AND GEODETIC SURVEY 1949 (CAS)
 JV4937'THE STATION IS LOCATED ALONG THE TEST HIGHWAY, NEAR THE
 JV4937'NORTHEASTERLY END OF THE STRIP AT THE JUNCTION OF A GRAVEL
 JV4937'ROAD.  IT IS 37 FEET WEST OF THE INTERSECTION OF GRAVEL ROAD
 JV4937'AND TEST HIGHWAY.  THE MARK IS FLUSH AND THE DISK IS STAMPED
 JV4937'ABERDEEN NE BASE 1949.
 JV4937'
 JV4937'REFERENCE MARK NO. 1 IS 61 FEET EAST OF THE CENTER OF PAVED
 JV4937'TEST ROAD.  THE MARK IS FLUSH AND THE DISK IS STAMPED ABERDEEN
 JV4937'NE BASE NO 1 1949.
 JV4937'
 JV4937'REFERENCE MARK NO. 2 IS 38 FEET WEST OF CENTER OF PAVED TEST
 JV4937'ROAD AND 15 FEET SOUTH OF CENTER OF GRAVEL ROAD.  THE MARK IS
 JV4937'FLUSH AND THE DISK IS STAMPED ABERDEEN NE BASE NO 2 1949.
 JV4937'
 JV4937'AZIMUTH MARK IS 36 FEET EAST OF CENTER OF PAVED TEST ROAD AND 36
 JV4937'FEET WEST OF CENTER OF DIRT TEST ROAD.  THE MARK IS FLUSH AND THE
 JV4937'DISK IS STAMPED ABERDEEN NE BASE 1949.
 JV4937'
 JV4937'TO REACH THE AZIMUTH FROM THE STATION, GO SOUTHWEST ON PAVED
 JV4937'TEST ROAD FOR 0.35 MILE TO AZMUTH ON LEFT AS DESCRIBED.
 JV4937'
 JV4937'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4937
 JV4937                          STATION RECOVERY (1958)
 JV4937
 JV4937'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4937'STATION MARK, REFERENCE MARK NO. 1 AND AZIMUTH MARK WAS RECOVERED
 JV4937'AND FOUND IN GOOD CONDITION.  REFERENCE MARK NO. 2 WAS FOUND
 JV4937'DESTROYED.  THEREFORE REFERENCE MARK NO. 3 WAS ESTABLISHED.  AN
 JV4937'ERROR OF 180 DEGREES WAS FOUND IN THE PUBLISHED DESCRIPTION OF THE
 JV4937'AZIMUTH MARK AND REFERENCE MARK NO. 1 WAS FOUND TO BE SOUTH EAST
 JV4937'OF THE STATION INSTEAD OF NORTHEAST OF STATION AS MENTIONED IN
 JV4937'ORIGINAL DESCRIPTION.
 JV4937'
 JV4937'A COMPLETE NEW DESCRIPTION FOLLOWS--
 JV4937'
 JV4937'STATION IS LOCATED ALONG THE NORTHWEST SIDE OF TEST-HIGHWAY
 JV4937'ABOUT 1/2 MILE SOUTHWEST OF THE NORTHEAST END OF THE TEST
 JV4937'HIGHWAY AT THE ABERDEEN PROVING GROUNDS AND NEAR THE
 JV4937'INTERSECTION OF A SURFACED ROAD AND TEST-HIGHWAY.  STATION IS
 JV4937'34 FEET NORTHWEST OF THE APPROXIMATE CENTERLINE OF TEST-HIGHWAY
 JV4937'AND 132 FEET NORTHEAST OF NORTHWEST CULVERT HEAD.  THE MARK IS
 JV4937'A STANDARD STATION MARK DISK SET IN A 12X12 INCH CONCRETE
 JV4937'MONUMENT, PROJECTS ABOUT 3 INCHES AND THE DISK IS STAMPED
 JV4937'ABERDEEN NE BASE 1949.
 JV4937'
 JV4937'REFERENCE MARK NO. 1 IS 65 FEET SOUTHEAST OF APROXIMATE
 JV4937'CENTERLINE OF TEST-ROAD, 100 FEET NORTH OF APPROXIMATE CENTERLINE
 JV4937'OF GRAVELED ROAD, 58-1/2 FEET NORTHWEST OF A WILD CHERRY TREE
 JV4937'AND 58 FEET WEST-SOUTHWEST OF A POST WITH A TELEPHONE BOX.  THE
 JV4937'MARK IS A STANDARD REFERENCE MARK DISK SET IN A 12X12 INCH
 JV4937'CONCRETE MONUMENT, FLUSH WITH THE GROUND AND THE DISK IS
 JV4937'STAMPED ABERDEEN NE BASE NO 1 1949.
 JV4937'
 JV4937'REFERENCE MARK NO. 3 IS 45 FEET NORTHWEST OF APPROXIMATE
 JV4937'CENTERLINE OF TEST-HIGHWAY AND 32 FEET SOUTHEAST OF A LOCUST
 JV4937'TREE.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN A 12X12
 JV4937'INCH CONCRETE MONUMENT, FLUSH WITH THE GROUND AND THE DISK IS
 JV4937'STAMPED ABERDEEN NE BASE NO 3 1949.
 JV4937'
 JV4937'AZIMUTH MARK IS 40 FEET EAST-SOUTHEAST OF APPROXIMATE CENTERLINE
 JV4937'OF TEST-ROAD, 37 FEET WEST-NORTHWEST OF APPROXIMATE CENTERLINE
 JV4937'OF GRAVELED ROAD, 10 FEET NORTH-NORTHEAST OF A METAL RANGE TARGET
 JV4937'AND 1 FOOT NORTHWEST OF A GAS PIPE WITNESS MARKER WITH A WHITE
 JV4937'DISK ON TOP OF PIPE.  THE MARK IS A STANDARD AZIMUTH MARK DISK
 JV4937'SET IN A 12X12 INCH CONCRETE MONUMENT, FLUSH WITH THE GROUND AND
 JV4937'THE DISK IS STAMPED ABERDEEN NE BASE 1949.
 JV4937'
 JV4937'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JV4937'HIGHWAY NO. 22 IN ABERDEEN, GO SOUTHWESTERLY ON U.S. HIGHWAY
 JV4937'NO. 40 FOR 1.75 MILE TO INTERSECTION OF STATE HIGHWAY
 JV4937'NO. 715.  TURN RIGHT ON CLOVER LEAF, PASS OVER OVERPASS AND
 JV4937'CONTINUE SOUTHERLY ON STATE HIGHWAY NO. 715 FOR 1.2 MILE TO GUARD
 JV4937'GATE AT ENTRANCE TO ABERDEEN PROVING GROUNDS.  PASS THROUGH GATE
 JV4937'AND CONTINUE SOUTHERLY FOR 0.8 MILE TO CROSS ROADS.  TURN RIGHT
 JV4937'AND GO WESTERLY FOR 0.5 MILE TO GUARD GATE.  PASS THROUGH GATE AND
 JV4937'CONTINUE WESTERLY FOR 0.8 MILE TO FORKS JUST AFTER PASSING
 JV4937'AIR PORT ON LEFT.  TAKE RIGHT FORK AND GO NORTHERLY ON GRAVEL
 JV4937'ROAD FOR 0.6 MILE TO T INTERSECTION AT TEST HIGHWAY AND
 JV4937'STATION AS DESCRIBED.  TURN LEFT AND GO SOUTHWESTERLY ON
 JV4937'TEST HIGHWAY FOR 0.3 MILE TO AZIMUTH MARK ON LEFT AS
 JV4937'DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4946 ***********************************************************************
 JV4946  DESIGNATION -  ABERDEEN PROVING GROUNDS TANK
 JV4946  PID         -  JV4946
 JV4946  STATE/COUNTY-  MD/HARFORD
 JV4946  COUNTRY     -  US
 JV4946  USGS QUAD   -  PERRYMAN (2016)
 JV4946
 JV4946                         *CURRENT SURVEY CONTROL
 JV4946  ______________________________________________________________________
 JV4946* NAD 83(1991) POSITION- 39 29 02.33001(N) 076 07 50.80977(W)   ADJUSTED
 JV4946  ______________________________________________________________________
 JV4946  GEOID HEIGHT    -        -33.220 (meters)                     GEOID18
 JV4946  LAPLACE CORR    -         -2.61  (seconds)                    DEFLEC18
 JV4946  HORZ ORDER      -  THIRD
 JV4946
 JV4946.The horizontal coordinates were established by classical geodetic methods
 JV4946.and adjusted by the National Geodetic Survey in January 1992.
 JV4946
 JV4946.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4946.GEOID18 height accuracy estimate available here.
 JV4946
 JV4946.Click photographs - Photos may exist for this station.
 JV4946
 JV4946.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4946
 JV4946. The following values were computed from the NAD 83(1991) position.
 JV4946
 JV4946;                    North         East     Units Scale Factor Converg.
 JV4946;SPC MD       -   202,092.363   474,781.029   MT  1.00000612   +0 32 44.0
 JV4946;SPC MD       -   663,031.36  1,557,677.43   sFT  1.00000612   +0 32 44.0
 JV4946;UTM  18      - 4,371,096.896   402,753.071   MT  0.99971643   -0 43 08.7
 JV4946
 JV4946_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0275371096(NAD 83)
 JV4946
 JV4946                          SUPERSEDED SURVEY CONTROL
 JV4946
 JV4946  NAD 83(1986)-  39 29 02.32306(N)    076 07 50.81579(W) AD(       ) 3
 JV4946  NAD 27      -  39 29 01.93200(N)    076 07 51.99100(W) AD(       ) 3
 JV4946
 JV4946.Superseded values are not recommended for survey control.
 JV4946
 JV4946.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4946.See file dsdata.pdf to determine how the superseded data were derived.
 JV4946
 JV4946_MARKER: 53 = ELEVATED TANK
 JV4946
 JV4946  HISTORY     - Date     Condition        Report By
 JV4946  HISTORY     - 1958     FIRST OBSERVED   CGS
 JV4946  HISTORY     - 1974     GOOD             NGS
 JV4946  HISTORY     - 1984     GOOD             USPSQD
 JV4946
 JV4946                          STATION DESCRIPTION
 JV4946
 JV4946'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4946'STATION IS LOCATED ABOUT 0.1 MILE NORTH OF THE INTERSECTION OF
 JV4946'HOSPITAL STREET AND CHESAPEAKE ROAD AT THE ABERDEEN PROVING
 JV4946'GROUNDS.  STATION IS OF STEEL CONSTRUCTION ABOUT 120 FEET HIGH
 JV4946'HAS 10 LEGS AND IS PAINTED RED AND WHITE CHECKED.
 JV4946'
 JV4946'THE POINT INTERSECTED WAS THE EXTREME TOP OF TANK.
 JV4946
 JV4946                          STATION RECOVERY (1974)
 JV4946
 JV4946'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RDB)
 JV4946'RECOVERED AS DESCRIBED BY JCE IN 1958.  DESCRIPTION IS ADEQUATE.
 JV4946'
 JV4946'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4946'AT ABERDEEN PROVING GROUNDS, 4.3 MILES SSW OF HAVRE DE GRACE.
 JV4946
 JV4946                          STATION RECOVERY (1984)
 JV4946
 JV4946'RECOVERY NOTE BY US POWER SQUADRON 1984 (EMT)
 JV4946'RECOVERED AS DESCRIBED BY JCE IN 1958.  DESCRIPTION IS GOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4929 ***********************************************************************
 JV4929  DESIGNATION -  ABERDEEN SW BASE
 JV4929  PID         -  JV4929
 JV4929  STATE/COUNTY-  MD/HARFORD
 JV4929  COUNTRY     -  US
 JV4929  USGS QUAD   -  PERRYMAN (2016)
 JV4929
 JV4929                         *CURRENT SURVEY CONTROL
 JV4929  ______________________________________________________________________
 JV4929* NAD 83(1991) POSITION- 39 26 41.65684(N) 076 12 19.37559(W)   ADJUSTED
 JV4929* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV4929  ______________________________________________________________________
 JV4929  GEOID HEIGHT    -        -33.202 (meters)                     GEOID18
 JV4929  LAPLACE CORR    -         -2.24  (seconds)                    DEFLEC18
 JV4929  HORZ ORDER      -  FIRST
 JV4929
 JV4929.The horizontal coordinates were established by classical geodetic methods
 JV4929.and adjusted by the National Geodetic Survey in January 1992.
 JV4929
 JV4929.The orthometric height was scaled from a topographic map.
 JV4929
 JV4929.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4929.GEOID18 height accuracy estimate available here.
 JV4929
 JV4929.Click photographs - Photos may exist for this station.
 JV4929
 JV4929.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4929
 JV4929. The following values were computed from the NAD 83(1991) position.
 JV4929
 JV4929;                    North         East     Units Scale Factor Converg.
 JV4929;SPC MD       -   197,695.653   468,400.807   MT  0.99999911   +0 29 55.4
 JV4929;SPC MD       -   648,606.49  1,536,744.98   sFT  0.99999911   +0 29 55.4
 JV4929;UTM  18      - 4,366,843.253   396,279.168   MT  0.99973245   -0 45 57.2
 JV4929
 JV4929!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4929!SPC MD       -   1.00000384  x   0.99999911  =   1.00000295
 JV4929!UTM  18      -   1.00000384  x   0.99973245  =   0.99973629
 JV4929
 JV4929:                Primary Azimuth Mark                     Grid Az
 JV4929:SPC MD       -  ABERDEEN SW BASE AZ MK                   031 18 15.7
 JV4929:UTM  18      -  ABERDEEN SW BASE AZ MK                   032 34 08.3
 JV4929
 JV4929_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9627966843(NAD 83)
 JV4929
 JV4929|---------------------------------------------------------------------|
 JV4929| PID    Reference Object                     Distance      Geod. Az  |
 JV4929|                                                           dddmmss.s |
 JV4929| CA9857 ABERDEEN SW BASE RM 1                24.932 METERS 02959     |
 JV4929| CA9856 ABERDEEN SW BASE AZ MK                             0314811.1 |
 JV4929| JV4943 SWAN MEADOW WATER TANK              APPROX. 7.2 KM 0323725.4 |
 JV4929| JV4935 MICHAELSVILLE WATER TANK            APPROX. 3.0 KM 1124910.0 |
 JV4929| CA9858 ABERDEEN SW BASE RM 2                27.242 METERS 12103     |
 JV4929|---------------------------------------------------------------------|
 JV4929
 JV4929                          SUPERSEDED SURVEY CONTROL
 JV4929
 JV4929  NAD 83(1986)-  39 26 41.65049(N)    076 12 19.38211(W) AD(       ) 1
 JV4929  NAD 27      -  39 26 41.25900(N)    076 12 20.55000(W) AD(       ) 1
 JV4929
 JV4929.Superseded values are not recommended for survey control.
 JV4929
 JV4929.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4929.See file dsdata.pdf to determine how the superseded data were derived.
 JV4929
 JV4929_MARKER: DS = TRIANGULATION STATION DISK
 JV4929_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4929_STAMPING: ABERDEEN SW BASE 1949
 JV4929_MARK LOGO: CGS
 JV4929_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4929+STABILITY: SURFACE MOTION
 JV4929
 JV4929  HISTORY     - Date     Condition        Report By
 JV4929  HISTORY     - 1949     MONUMENTED       CGS
 JV4929  HISTORY     - 1958     GOOD             CGS
 JV4929  HISTORY     - 1984     POOR             USPSQD
 JV4929
 JV4929                          STATION DESCRIPTION
 JV4929
 JV4929'DESCRIBED BY COAST AND GEODETIC SURVEY 1949 (CAS)
 JV4929'STATION IS LOCATED ON THE ABERDEEN PROVING GROUNDS AT THE
 JV4929'SOUTHWEST END OF THE TEST HIGHWAY.  IT IS 115 FEET NORTH OF THE
 JV4929'INTERSECTION OF THE TEST HIGHWAY AND A PAVED T-ROAD SOUTHEAST AND
 JV4929'44 FEET NORTH OF THE CENTER OF THE TEST HIGHWAY.  THE MARK IS
 JV4929'FLUSH AND THE DISK IS STAMPED ABERDEEN SW BASE 1949.
 JV4929'
 JV4929'REFERENCE MARK NO. 1 IS 45 FEET NORTHWEST OF THE CENTER OF THE
 JV4929'TEST HIGHWAY.  THE MARK IS FLUSH AND THE DISK IS STAMPED ABERDEEN
 JV4929'SW BASE NO 1 1949.
 JV4929'
 JV4929'REFERENCE MARK NO. 2 IS 68 FEET NORTH OF THE NORTH CORNER OF
 JV4929'BUILDING NO. 5027 AND 45 FEET SOUTHEAST OF THE CENTER OF THE
 JV4929'TEST HIGHWAY.  THE MARK IS FLUSH AND THE DISK IS STAMPED
 JV4929'ABERDEEN SW BASE NO 2 1949.
 JV4929'
 JV4929'THE AZIMUTH MARK IS 100 FEET NORTH OF THE NORTHWEST END OF A
 JV4929'TEST BRIDGE AND 28 FEET SOUTHEAST OF THE CENTER OF THE TEST
 JV4929'HIGHWAY.  THE MARK PROJECTS 2 INCHES AND THE DISK IS STAMPED
 JV4929'ABERDEEN SW BASE 1949.
 JV4929'
 JV4929'TO REACH THE AZIMUTH MARK FROM THE STATION GO NORTHEAST ON THE
 JV4929'TEST HIGHWAY FOR 0.4 MILE TO THE MARK ON THE RIGHT AS DESCRIBED.
 JV4929'
 JV4929'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4929
 JV4929                          STATION RECOVERY (1958)
 JV4929
 JV4929'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (GCR)
 JV4929'THE STATION WAS RECOVERED.  ALL MARKS WERE LOCATED AS DESCRIBED
 JV4929'EXCEPT AS FOLLOWS--THE STATION SURFACE MARK IS A SMOOTH BRASS PLATE
 JV4929'ABOUT 2-1/2 INCHES IN DIAMETER (UNSTAMPED) WITH PUNCH HOLE AT
 JV4929'CENTER, SET FLUSH WITH THE SURFACE IN A RATHER LARGE CONCRETE
 JV4929'MASS.  REFERENCE MARKS 1 AND 2 WERE FOUND AS DESCRIBED.
 JV4929'REFERENCE MARK 1 IS 3 INCHES BELOW THE GROUND SURFACE.  THE
 JV4929'AZIMUTH MARK WAS RECOVERED AS DESCRIBED.  THE STATION AND AZIMUTH
 JV4929'MARKS BOTH HAVE STEEL PIPE WITNESS POST NEARBY.
 JV4929
 JV4929                          STATION RECOVERY (1984)
 JV4929
 JV4929'RECOVERY NOTE BY US POWER SQUADRON 1984 (CET)
 JV4929'STATION RECOVERED POOR.
 JV4929'
 JV4929'DESCRIPTION BY GCR 1958 IS VERY GOOD.  PUNCH HOLE AT CENTER OF MARK
 JV4929'BEARLY DISCERNABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8031 ***********************************************************************
 AJ8031  DESIGNATION -  ABERDEEN TC GPS BASE
 AJ8031  PID         -  AJ8031
 AJ8031  STATE/COUNTY-  MD/HARFORD
 AJ8031  COUNTRY     -  US
 AJ8031  USGS QUAD   -  SPESUTIE (2016)
 AJ8031
 AJ8031                         *CURRENT SURVEY CONTROL
 AJ8031  ______________________________________________________________________
 AJ8031* NAD 83(2011) POSITION- 39 28 19.84905(N) 076 06 52.79478(W)   ADJUSTED
 AJ8031* NAD 83(2011) ELLIP HT-   -15.929 (meters)        (06/27/12)   ADJUSTED
 AJ8031* NAD 83(2011) EPOCH   -  2010.00
 AJ8031* NAVD 88 ORTHO HEIGHT -    17.3   (meters)       57.    (feet) GPS OBS
 AJ8031  ______________________________________________________________________
 AJ8031  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8031  GEOID HEIGHT    -        -33.230 (meters)                     GEOID99
 AJ8031  GEOID HEIGHT    -        -33.259 (meters)                     GEOID18
 AJ8031  NAD 83(2011) X  -  1,183,137.133 (meters)                     COMP
 AJ8031  NAD 83(2011) Y  - -4,786,088.284 (meters)                     COMP
 AJ8031  NAD 83(2011) Z  -  4,032,909.617 (meters)                     COMP
 AJ8031  LAPLACE CORR    -         -2.08  (seconds)                    DEFLEC18
 AJ8031
 AJ8031  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8031  Standards:
 AJ8031         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8031            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8031  -------------------------------------------------------------------
 AJ8031  NETWORK    0.26   0.47           0.11   0.10   0.24     -0.04692460
 AJ8031  -------------------------------------------------------------------
 AJ8031  Click here for local accuracies and other accuracy information.
 AJ8031
 AJ8031.The horizontal coordinates were established by GPS observations
 AJ8031.and adjusted by the National Geodetic Survey in June 2012.
 AJ8031
 AJ8031.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8031.been affixed to the stable North American tectonic plate. See 
 AJ8031.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8031
 AJ8031.The horizontal coordinates are valid at the epoch date displayed above
 AJ8031.which is a decimal equivalence of Year/Month/Day.
 AJ8031
 AJ8031.The orthometric height was determined by GPS observations and a
 AJ8031.high-resolution geoid model.
 AJ8031
 AJ8031.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8031.GEOID18 height accuracy estimate available here.
 AJ8031
 AJ8031.Click photographs - Photos may exist for this station.
 AJ8031
 AJ8031.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8031
 AJ8031.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8031
 AJ8031.The ellipsoidal height was determined by GPS observations
 AJ8031.and is referenced to NAD 83.
 AJ8031
 AJ8031. The following values were computed from the NAD 83(2011) position.
 AJ8031
 AJ8031;                    North         East     Units Scale Factor Converg.
 AJ8031;SPC MD       -   200,795.622   476,180.128   MT  1.00000396   +0 33 20.4
 AJ8031;SPC MD       -   658,776.97  1,562,267.64   sFT  1.00000396   +0 33 20.4
 AJ8031;UTM  18      - 4,369,769.981   404,122.815   MT  0.99971318   -0 42 31.1
 AJ8031
 AJ8031!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8031!SPC MD       -   1.00000250  x   1.00000396  =   1.00000646
 AJ8031!UTM  18      -   1.00000250  x   0.99971318  =   0.99971568
 AJ8031
 AJ8031_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0412269769(NAD 83)
 AJ8031
 AJ8031                          SUPERSEDED SURVEY CONTROL
 AJ8031
 AJ8031  NAD 83(2007)-  39 28 19.84929(N)    076 06 52.79553(W) AD(2002.00) 0
 AJ8031  ELLIP H (02/10/07)  -15.907  (m)                       GP(2002.00)    
 AJ8031  NAD 83(1991)-  39 28 19.84939(N)    076 06 52.79578(W) AD(       ) A
 AJ8031  ELLIP H (02/12/02)  -15.906  (m)                       GP(       ) 4 1
 AJ8031
 AJ8031.Superseded values are not recommended for survey control.
 AJ8031
 AJ8031.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8031.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8031
 AJ8031_MARKER: Z = SEE DESCRIPTION
 AJ8031_SETTING: 0 = UNSPECIFIED SETTING
 AJ8031_MARK LOGO: NONE
 AJ8031_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8031_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AJ8031_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8031+SATELLITE: SATELLITE OBSERVATIONS - 2000
 AJ8031
 AJ8031  HISTORY     - Date     Condition        Report By
 AJ8031  HISTORY     - 2000     MONUMENTED       USA
 AJ8031
 AJ8031                          STATION DESCRIPTION
 AJ8031
 AJ8031'DESCRIBED BY US ARMY 2000 (GB)
 AJ8031'STATION IS THE ANTENNA REFERENCE POINT OF A GPS ANTENNA WHICH SERVES
 AJ8031'AS A GPS BASE STATION.  STATION IS LOCATED ON THE ROOF OF BUILDING 371
 AJ8031'WITHIN THE SECURE AREA OF THE ABERDEEN TEST CENTER IN ABERDEEN
 AJ8031'MARYLAND.  ANTENNA IS A TRIMBLE GEODETIC ANTENNA WITH GROUND PLANE
 AJ8031'(PART NUMBER 22020-00) WHICH IS ATTACHED TO AN ALUMINIUM BRACKET
 AJ8031'AFFIXED TO THE PEAK OF THE ROOF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4799 ***********************************************************************
 JV4799  DESIGNATION -  ABERDEEN WATER TANK
 JV4799  PID         -  JV4799
 JV4799  STATE/COUNTY-  MD/HARFORD
 JV4799  COUNTRY     -  US
 JV4799  USGS QUAD   -  ABERDEEN (2016)
 JV4799
 JV4799                         *CURRENT SURVEY CONTROL
 JV4799  ______________________________________________________________________
 JV4799* NAD 83(1991) POSITION- 39 30 49.82869(N) 076 10 37.08067(W)   ADJUSTED
 JV4799* NAVD 88 ORTHO HEIGHT -    38.    (meters)      125.    (feet) VERTCON3
 JV4799  ______________________________________________________________________
 JV4799  GEOID HEIGHT    -        -33.087 (meters)                     GEOID18
 JV4799  LAPLACE CORR    -         -2.77  (seconds)                    DEFLEC18
 JV4799  HORZ ORDER      -  SECOND
 JV4799
 JV4799.The horizontal coordinates were established by classical geodetic methods
 JV4799.and adjusted by the National Geodetic Survey in January 1992.
 JV4799
 JV4799.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4799.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4799
 JV4799.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4799.GEOID18 height accuracy estimate available here.
 JV4799
 JV4799.Click photographs - Photos may exist for this station.
 JV4799
 JV4799.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4799
 JV4799. The following values were computed from the NAD 83(1991) position.
 JV4799
 JV4799;                    North         East     Units Scale Factor Converg.
 JV4799;SPC MD       -   205,370.718   470,777.727   MT  1.00001179   +0 30 59.6
 JV4799;SPC MD       -   673,787.10  1,544,543.26   sFT  1.00001179   +0 30 59.6
 JV4799;UTM  18      - 4,374,461.867   398,824.254   MT  0.99972603   -0 44 56.1
 JV4799
 JV4799!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4799!SPC MD       -   0.99999927  x   1.00001179  =   1.00001106
 JV4799!UTM  18      -   0.99999927  x   0.99972603  =   0.99972530
 JV4799
 JV4799:                Primary Azimuth Mark                     Grid Az
 JV4799:SPC MD       -  MEIGS                                    035 07 22.7
 JV4799:UTM  18      -  MEIGS                                    036 23 18.4
 JV4799
 JV4799_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9882474461(NAD 83)
 JV4799
 JV4799|---------------------------------------------------------------------|
 JV4799| PID    Reference Object                     Distance      Geod. Az  |
 JV4799|                                                           dddmmss.s |
 JV4799| JV4800 ABERDEEN STANDPIPE                   17.317 METERS 03217     |
 JV4799| JV4798 MEIGS                               APPROX. 6.6 KM 0353822.3 |
 JV4799|---------------------------------------------------------------------|
 JV4799
 JV4799                          SUPERSEDED SURVEY CONTROL
 JV4799
 JV4799  NAD 83(1986)-  39 30 49.82266(N)    076 10 37.08608(W) AD(       ) 2
 JV4799  NAD 27      -  39 30 49.42900(N)    076 10 38.25900(W) AD(       ) 2
 JV4799  NGVD 29 (07/19/86)   38.     (m)          125.     (f) VERT ANG       
 JV4799
 JV4799.Superseded values are not recommended for survey control.
 JV4799
 JV4799.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4799.See file dsdata.pdf to determine how the superseded data were derived.
 JV4799
 JV4799_MARKER: 53 = ELEVATED TANK
 JV4799_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4799+SATELLITE: SATELLITE OBSERVATIONS - April 21, 2001
 JV4799
 JV4799  HISTORY     - Date     Condition        Report By
 JV4799  HISTORY     - 1945     FIRST OBSERVED   CGS
 JV4799  HISTORY     - 1958     GOOD             CGS
 JV4799  HISTORY     - 1983     GOOD             USPSQD
 JV4799  HISTORY     - 20010421 GOOD             USPSQD
 JV4799
 JV4799                          STATION DESCRIPTION
 JV4799
 JV4799'DESCRIBED BY COAST AND GEODETIC SURVEY 1945 (LGS)
 JV4799'STATION IS THE CENTER OF THE FEED PIPE UNDER THE ABERDEEN WATER
 JV4799'TANK, ABOUT 0.45 MILE WEST ALONG THE CHURCHVILLE ROAD FROM THE
 JV4799'INTERSECTION WITH THE B AND O RWY. AT ABERDEEN, MD.  THE CENTER OF
 JV4799'THIS PIPE SHOULD BE VERY CLOSE IF NOT DIRECTLY UNDER THE CENTER
 JV4799'OF THE TOP OF THE TANK.  THE TOP WAS NOT COMPLETED WHEN THE TIE
 JV4799'WAS MADE TO THE STANDPIPE BY DIRECT MEASUREMENT FOR DISTANCE AND
 JV4799'SOLAR AZIMUTH FOR DIRECTION, IN JUNE, 1945.
 JV4799
 JV4799                          STATION RECOVERY (1958)
 JV4799
 JV4799'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4799'STATION IS LOCATED ALONG THE SOUTHWEST SIDE OF STATE HIGHWAY
 JV4799'NO. 22 IN THE NORTHWEST EDGE OF ABERDEEN.  STATION IS OF STEEL
 JV4799'CONSTRUCTION ABOUT 100 FEET HIGH, HAS 6 LEGS AND PAINTED DARK
 JV4799'GREEN.  THE POINT INTERSECTED WAS THE BALL FINIAL.
 JV4799
 JV4799                          STATION RECOVERY (1983)
 JV4799
 JV4799'RECOVERY NOTE BY US POWER SQUADRON 1983 (CAS)
 JV4799'CHANGE DESCRIPTION TO LOCATE--STATION IS LOCATED ALONG SOUTHWEST
 JV4799'SIDE OF STATE HIGHWAY 132 IN THE NORTHWEST EDGE OF ABERDEEN.
 JV4799'STATION IS OF STEEL CONSTRUCTION ABOUT 100 FEET HIGH, HAS 6 LEGS
 JV4799'AND PAINTED LIGHT GREEN.
 JV4799'
 JV4799'RECOVERY OF TRIANGULATION INTERSECTION STATION.
 JV4799
 JV4799                          STATION RECOVERY (2001)
 JV4799
 JV4799'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV4799'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6705 ***********************************************************************
 JV6705  DESIGNATION -  ABERDEEN WATER TOWER
 JV6705  PID         -  JV6705
 JV6705  STATE/COUNTY-  MD/HARFORD
 JV6705  COUNTRY     -  US
 JV6705  USGS QUAD   -  ABERDEEN (2016)
 JV6705
 JV6705                         *CURRENT SURVEY CONTROL
 JV6705  ______________________________________________________________________
 JV6705* NAD 83(1991) POSITION- 39 31 33.23231(N) 076 10 10.32615(W)   ADJUSTED
 JV6705* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV6705  ______________________________________________________________________
 JV6705  GEOID HEIGHT    -        -33.068 (meters)                     GEOID18
 JV6705  LAPLACE CORR    -         -2.78  (seconds)                    DEFLEC18
 JV6705  HORZ ORDER      -  THIRD
 JV6705
 JV6705.The horizontal coordinates were established by classical geodetic methods
 JV6705.and adjusted by the National Geodetic Survey in January 1992.
 JV6705
 JV6705.The orthometric height was scaled from a topographic map.
 JV6705
 JV6705.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6705.GEOID18 height accuracy estimate available here.
 JV6705
 JV6705.Click photographs - Photos may exist for this station.
 JV6705
 JV6705.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6705
 JV6705. The following values were computed from the NAD 83(1991) position.
 JV6705
 JV6705;                    North         East     Units Scale Factor Converg.
 JV6705;SPC MD       -   206,715.053   471,404.640   MT  1.00001416   +0 31 16.4
 JV6705;SPC MD       -   678,197.64  1,546,600.06   sFT  1.00001416   +0 31 16.4
 JV6705;UTM  18      - 4,375,791.645   399,480.516   MT  0.99972440   -0 44 39.8
 JV6705
 JV6705!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6705!SPC MD       -   1.00000523  x   1.00001416  =   1.00001939
 JV6705!UTM  18      -   1.00000523  x   0.99972440  =   0.99972963
 JV6705
 JV6705_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9948075791(NAD 83)
 JV6705
 JV6705                          SUPERSEDED SURVEY CONTROL
 JV6705
 JV6705  NAD 83(1986)-  39 31 33.22546(N)    076 10 10.33230(W) AD(       ) 3
 JV6705
 JV6705.Superseded values are not recommended for survey control.
 JV6705
 JV6705.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6705.See file dsdata.pdf to determine how the superseded data were derived.
 JV6705
 JV6705_MARKER: 54 = WATER TOWER
 JV6705_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6705_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6705_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6705+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6705
 JV6705  HISTORY     - Date     Condition        Report By
 JV6705  HISTORY     - 1989     FIRST OBSERVED   RDA
 JV6705  HISTORY     - 19991226 GOOD             USPSQD
 JV6705
 JV6705                          STATION DESCRIPTION
 JV6705
 JV6705'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6705'THE AZIMUTH MARK IS A BEACON ON TOP OF ABERDEEN WATER TOWER.  THE
 JV6705'TOWER IS LOCATED ON THE NORTH SIDE OF ABERDEEN, MARYLAND APPROXIMATELY
 JV6705'1 MILE FROM HARFORD COUNTY STATION 21 PARADISE AT A 188 DEGREE NORTH
 JV6705'AZIMUTH, 1.25 MILES FROM HARFORD COUNTY STATION 28 GILBERT AT A 97
 JV6705'DEGREE NORTH AZIMUTH, APPROXIMATELY 2 MILES FROM HARFORD COUNTY
 JV6705'STATION 20 BUSH AT A 67 DEGREE NORTH AZIMUTH.
 JV6705
 JV6705                          STATION RECOVERY (1999)
 JV6705
 JV6705'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6705'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4805 ***********************************************************************
 JV4805  DESIGNATION -  ABERDEEN WESTERN UNION MW
 JV4805  PID         -  JV4805
 JV4805  STATE/COUNTY-  MD/HARFORD
 JV4805  COUNTRY     -  US
 JV4805  USGS QUAD   -  ABERDEEN (2016)
 JV4805
 JV4805                         *CURRENT SURVEY CONTROL
 JV4805  ______________________________________________________________________
 JV4805* NAD 83(1991) POSITION- 39 30 54.55688(N) 076 14 24.80223(W)   ADJUSTED
 JV4805  ______________________________________________________________________
 JV4805  GEOID HEIGHT    -        -32.998 (meters)                     GEOID18
 JV4805  LAPLACE CORR    -         -1.87  (seconds)                    DEFLEC18
 JV4805  HORZ ORDER      -  THIRD
 JV4805
 JV4805.The horizontal coordinates were established by classical geodetic methods
 JV4805.and adjusted by the National Geodetic Survey in January 1992.
 JV4805
 JV4805.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4805.GEOID18 height accuracy estimate available here.
 JV4805
 JV4805.Click photographs - Photos may exist for this station.
 JV4805
 JV4805.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4805
 JV4805. The following values were computed from the NAD 83(1991) position.
 JV4805
 JV4805;                    North         East     Units Scale Factor Converg.
 JV4805;SPC MD       -   205,469.375   465,336.870   MT  1.00001205   +0 28 36.7
 JV4805;SPC MD       -   674,110.77  1,526,692.71   sFT  1.00001205   +0 28 36.7
 JV4805;UTM  18      - 4,374,680.628   393,388.420   MT  0.99973994   -0 47 21.1
 JV4805
 JV4805_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9338874680(NAD 83)
 JV4805
 JV4805                          SUPERSEDED SURVEY CONTROL
 JV4805
 JV4805  NAD 83(1986)-  39 30 54.55058(N)    076 14 24.80848(W) AD(       ) 3
 JV4805  NAD 27      -  39 30 54.15508(N)    076 14 25.97711(W) AD(       ) 3
 JV4805
 JV4805.Superseded values are not recommended for survey control.
 JV4805
 JV4805.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4805.See file dsdata.pdf to determine how the superseded data were derived.
 JV4805
 JV4805_MARKER: 45 = MICROWAVE TOWER
 JV4805
 JV4805  HISTORY     - Date     Condition        Report By
 JV4805  HISTORY     - 1966     FIRST OBSERVED   CGS
 JV4805  HISTORY     - 20011027 GOOD             USPSQD
 JV4805
 JV4805                          STATION DESCRIPTION
 JV4805
 JV4805'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV4805'THE STATION IS LOCATED 4 MILES NORTHWEST OF ABERDEEN, 3-1/2 MILES
 JV4805'SOUTH OF CHURCHVILLE AND 3-1/2 MILES SOUTHEAST OF FULFORD.
 JV4805'
 JV4805'THE STATION IS THE RED BLINKING LIGHT ON TOP OF THE TWIN
 JV4805'TOWERS.  THE TOWERS ARE PAINTED ALTERNATELY RED AND WHITE IN
 JV4805'COLOR AND ARE APPROXIMATELY 175 FEET TALL.
 JV4805
 JV4805                          STATION RECOVERY (2001)
 JV4805
 JV4805'RECOVERY NOTE BY US POWER SQUADRON 2001 (JJC)
 JV4805'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7286 ***********************************************************************
 JV7286  DESIGNATION -  ABINGDON
 JV7286  PID         -  JV7286
 JV7286  STATE/COUNTY-  MD/HARFORD
 JV7286  COUNTRY     -  US
 JV7286  USGS QUAD   -  EDGEWOOD (2016)
 JV7286
 JV7286                         *CURRENT SURVEY CONTROL
 JV7286  ______________________________________________________________________
 JV7286* NAD 83(2011) POSITION- 39 28 41.21787(N) 076 19 37.16583(W)   ADJUSTED
 JV7286* NAD 83(2011) ELLIP HT-    42.724 (meters)        (06/27/12)   ADJUSTED
 JV7286* NAD 83(2011) EPOCH   -  2010.00
 JV7286* NAVD 88 ORTHO HEIGHT -    75.7   (meters)      248.    (feet) GPS OBS
 JV7286  ______________________________________________________________________
 JV7286  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7286  GEOID HEIGHT    -        -33.250 (meters)                     GEOID93
 JV7286  GEOID HEIGHT    -        -32.971 (meters)                     GEOID18
 JV7286  NAD 83(2011) X  -  1,165,304.547 (meters)                     COMP
 JV7286  NAD 83(2011) Y  - -4,790,076.749 (meters)                     COMP
 JV7286  NAD 83(2011) Z  -  4,033,455.603 (meters)                     COMP
 JV7286  LAPLACE CORR    -         -3.49  (seconds)                    DEFLEC18
 JV7286
 JV7286  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7286  Standards:
 JV7286         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7286            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7286  -------------------------------------------------------------------
 JV7286  NETWORK    1.79   4.08           0.75   0.66   2.08      0.45435557
 JV7286  -------------------------------------------------------------------
 JV7286  Click here for local accuracies and other accuracy information.
 JV7286
 JV7286.The horizontal coordinates were established by GPS observations
 JV7286.and adjusted by the National Geodetic Survey in June 2012.
 JV7286
 JV7286.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7286.been affixed to the stable North American tectonic plate. See 
 JV7286.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7286
 JV7286.The horizontal coordinates are valid at the epoch date displayed above
 JV7286.which is a decimal equivalence of Year/Month/Day.
 JV7286
 JV7286.The orthometric height was determined by GPS observations and a
 JV7286.high-resolution geoid model.
 JV7286
 JV7286.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7286.GEOID18 height accuracy estimate available here.
 JV7286
 JV7286.Click photographs - Photos may exist for this station.
 JV7286
 JV7286.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7286
 JV7286.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7286
 JV7286.The ellipsoidal height was determined by GPS observations
 JV7286.and is referenced to NAD 83.
 JV7286
 JV7286. The following values were computed from the NAD 83(2011) position.
 JV7286
 JV7286;                    North         East     Units Scale Factor Converg.
 JV7286;SPC MD       -   201,298.686   457,905.764   MT  1.00000504   +0 25 20.7
 JV7286;SPC MD       -   660,427.44  1,502,312.49   sFT  1.00000504   +0 25 20.7
 JV7286;UTM  18      - 4,370,676.192   385,868.916   MT  0.99976038   -0 50 37.6
 JV7286
 JV7286!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7286!SPC MD       -   0.99999330  x   1.00000504  =   0.99999834
 JV7286!UTM  18      -   0.99999330  x   0.99976038  =   0.99975368
 JV7286
 JV7286:                Primary Azimuth Mark                     Grid Az
 JV7286:SPC MD       -  ABINGDON AZ MK                           148 56 35.8
 JV7286:UTM  18      -  ABINGDON AZ MK                           150 12 34.1
 JV7286
 JV7286_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8586870676(NAD 83)
 JV7286
 JV7286|---------------------------------------------------------------------|
 JV7286| PID    Reference Object                     Distance      Geod. Az  |
 JV7286|                                                           dddmmss.s |
 JV7286| JV7287 ABINGDON AZ MK                      492.112 METERS 1492156.5 |
 JV7286|---------------------------------------------------------------------|
 JV7286
 JV7286                          SUPERSEDED SURVEY CONTROL
 JV7286
 JV7286  NAD 83(2007)-  39 28 41.21798(N)    076 19 37.16668(W) AD(2002.00) 0
 JV7286  ELLIP H (02/10/07)   42.746  (m)                       GP(2002.00)    
 JV7286  NAD 83(1991)-  39 28 41.21768(N)    076 19 37.16640(W) AD(       ) 1
 JV7286  ELLIP H (08/17/94)   42.681  (m)                       GP(       ) 4 1
 JV7286
 JV7286.Superseded values are not recommended for survey control.
 JV7286
 JV7286.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7286.See file dsdata.pdf to determine how the superseded data were derived.
 JV7286
 JV7286_MARKER: DD = SURVEY DISK
 JV7286_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7286_STAMPING: 140 ABINGDON 1993
 JV7286_MARK LOGO: MD-025
 JV7286_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7286_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7286+STABILITY: SURFACE MOTION
 JV7286_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7286+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7286
 JV7286  HISTORY     - Date     Condition        Report By
 JV7286  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7286
 JV7286                          STATION DESCRIPTION
 JV7286
 JV7286'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7286'THE STATION IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 16.0 MILES
 JV7286'NORTHWEST OF THE VILLAGE ABINGDON.
 JV7286'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE 95 AND STATE
 JV7286'HIGHWAY 24 PROCEED NORTHWEST ALONG STATE HIGHWAY 24 1.5 MILES TO ITS
 JV7286'INTERSECTION WITH SINGER ROAD.  TURN LEFT AND PROCEED WEST ALONG
 JV7286'SINGER ROAD 0.4 MILES TO ITS INTERSECTION WITH TOLLGATE ROAD AND THE
 JV7286'STATION ON THE LEFT.
 JV7286'THE STATION IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7286'CONCRETE FLUSH WITH THE GROUND STAMPED 140 ABINGDON 1993.
 JV7286'THE STATION IS 44.3 FEET SOUTH FROM A LIGHT POLE, 6.5 FEET SOUTHEAST
 JV7286'FROM A FIRE HYDRANT, 49.6 FEET EAST FROM THE FACE OF CURB OF TOLLGATE
 JV7286'ROAD, AND 26.7 FEET SOUTHEAST FROM A STORM DRAIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7287 ***********************************************************************
 JV7287  DESIGNATION -  ABINGDON AZ MK
 JV7287  PID         -  JV7287
 JV7287  STATE/COUNTY-  MD/HARFORD
 JV7287  COUNTRY     -  US
 JV7287  USGS QUAD   -  EDGEWOOD (2016)
 JV7287
 JV7287                         *CURRENT SURVEY CONTROL
 JV7287  ______________________________________________________________________
 JV7287* NAD 83(2011) POSITION- 39 28 27.48787(N) 076 19 26.67444(W)   ADJUSTED
 JV7287* NAD 83(2011) ELLIP HT-    26.719 (meters)        (06/27/12)   ADJUSTED
 JV7287* NAD 83(2011) EPOCH   -  2010.00
 JV7287* NAVD 88 ORTHO HEIGHT -    59.7   (meters)      196.    (feet) GPS OBS
 JV7287  ______________________________________________________________________
 JV7287  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7287  GEOID HEIGHT    -        -33.270 (meters)                     GEOID93
 JV7287  GEOID HEIGHT    -        -32.985 (meters)                     GEOID18
 JV7287  NAD 83(2011) X  -  1,165,608.914 (meters)                     COMP
 JV7287  NAD 83(2011) Y  - -4,790,267.039 (meters)                     COMP
 JV7287  NAD 83(2011) Z  -  4,033,118.581 (meters)                     COMP
 JV7287  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 JV7287
 JV7287  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7287  Standards:
 JV7287         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7287            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7287  -------------------------------------------------------------------
 JV7287  NETWORK    1.57   3.70           0.69   0.55   1.89      0.38745546
 JV7287  -------------------------------------------------------------------
 JV7287  Click here for local accuracies and other accuracy information.
 JV7287
 JV7287.The horizontal coordinates were established by GPS observations
 JV7287.and adjusted by the National Geodetic Survey in June 2012.
 JV7287
 JV7287.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7287.been affixed to the stable North American tectonic plate. See 
 JV7287.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7287
 JV7287.The horizontal coordinates are valid at the epoch date displayed above
 JV7287.which is a decimal equivalence of Year/Month/Day.
 JV7287
 JV7287.The orthometric height was determined by GPS observations and a
 JV7287.high-resolution geoid model.
 JV7287
 JV7287.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7287.GEOID18 height accuracy estimate available here.
 JV7287
 JV7287.Click photographs - Photos may exist for this station.
 JV7287
 JV7287.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7287
 JV7287.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7287
 JV7287.The ellipsoidal height was determined by GPS observations
 JV7287.and is referenced to NAD 83.
 JV7287
 JV7287. The following values were computed from the NAD 83(2011) position.
 JV7287
 JV7287;                    North         East     Units Scale Factor Converg.
 JV7287;SPC MD       -   200,877.112   458,159.639   MT  1.00000434   +0 25 27.2
 JV7287;SPC MD       -   659,044.32  1,503,145.42   sFT  1.00000434   +0 25 27.2
 JV7287;UTM  18      - 4,370,249.216   386,113.354   MT  0.99975969   -0 50 30.7
 JV7287
 JV7287!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7287!SPC MD       -   0.99999581  x   1.00000434  =   1.00000015
 JV7287!UTM  18      -   0.99999581  x   0.99975969  =   0.99975550
 JV7287
 JV7287:                Primary Azimuth Mark                     Grid Az
 JV7287:SPC MD       -  ABINGDON                                 328 56 35.9
 JV7287:UTM  18      -  ABINGDON                                 330 12 33.8
 JV7287
 JV7287_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8611370249(NAD 83)
 JV7287
 JV7287|---------------------------------------------------------------------|
 JV7287| PID    Reference Object                     Distance      Geod. Az  |
 JV7287|                                                           dddmmss.s |
 JV7287| JV7286 ABINGDON                            492.112 METERS 3292203.1 |
 JV7287|---------------------------------------------------------------------|
 JV7287
 JV7287                          SUPERSEDED SURVEY CONTROL
 JV7287
 JV7287  NAD 83(2007)-  39 28 27.48798(N)    076 19 26.67528(W) AD(2002.00) 0
 JV7287  ELLIP H (02/10/07)   26.742  (m)                       GP(2002.00)    
 JV7287  NAD 83(1991)-  39 28 27.48767(N)    076 19 26.67503(W) AD(       ) 1
 JV7287  ELLIP H (08/17/94)   26.679  (m)                       GP(       ) 4 1
 JV7287
 JV7287.Superseded values are not recommended for survey control.
 JV7287
 JV7287.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7287.See file dsdata.pdf to determine how the superseded data were derived.
 JV7287
 JV7287_MARKER: DD = SURVEY DISK
 JV7287_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7287_STAMPING: 140 ABINGDON AZ MK 1993
 JV7287_MARK LOGO: MD-025
 JV7287_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7287_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7287+STABILITY: SURFACE MOTION
 JV7287_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7287+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7287
 JV7287  HISTORY     - Date     Condition        Report By
 JV7287  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7287  HISTORY     - 20020217 MARK NOT FOUND   USPSQD
 JV7287
 JV7287                          STATION DESCRIPTION
 JV7287
 JV7287'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7287'THE AZIMUTH MARK IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 16.0
 JV7287'MILES NORTHWEST OF THE VILLAGE ABINGDON.
 JV7287'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF INTERSTATE 95 AND
 JV7287'STATE HIGHWAY 24 PROCEED NORTHWEST ALONG STATE HIGHWAY 24 1.5 MILES
 JV7287'TO ITS INTERSECTION WITH SINGER ROAD.  TURN LEFT AND PROCEED WEST
 JV7287'ALONG SINGER ROAD 0.4 MILES TO ITS INTERSECTION WITH TOLLGATE ROAD
 JV7287'AND THE STATION ON THE LEFT.  TURN LEFT AND PROCEED SOUTH ALONG
 JV7287'TOLLGATE ROAD 0.3 MILES TO ITS INTERSECTION WITH ASHTON WAY AND THE
 JV7287'AZIMUTH MARK ON THE LEFT IN THE SOUTHEAST CORNER OF THE INTERSECTION.
 JV7287'THE AZIMUTH MARK IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7287'CONCRETE FLUSH WITH THE GROUND STAMPED 140 ABINGDON AZ MK 1993.
 JV7287'THE AZIMUTH MARK IS 8.8 FEET SOUTH FROM THE FACE OF CURB OF ASHTON
 JV7287'WAY, 6.3 FEET EAST FROM THE FACE OF CURB OF TOLLGATE ROAD, 20.1 FEET
 JV7287'WEST FROM A TV BOX AND 20.4 FEET NORTHWEST FROM THE NORTHWEST CORNER
 JV7287'OF A STORM DRAIN.
 JV7287
 JV7287                          STATION RECOVERY (2002)
 JV7287
 JV7287'RECOVERY NOTE BY US POWER SQUADRON 2002 (DG)
 JV7287'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ3497 ***********************************************************************
 DJ3497  HT_MOD      -  This is a Height Modernization Survey Station.
 DJ3497  DESIGNATION -  ACADEMY
 DJ3497  PID         -  DJ3497
 DJ3497  STATE/COUNTY-  MD/QUEEN ANNES
 DJ3497  COUNTRY     -  US
 DJ3497  USGS QUAD   -  CHURCH HILL (2017)
 DJ3497
 DJ3497                         *CURRENT SURVEY CONTROL
 DJ3497  ______________________________________________________________________
 DJ3497* NAD 83(2011) POSITION- 39 11 35.59421(N) 075 53 42.50492(W)   ADJUSTED
 DJ3497* NAD 83(2011) ELLIP HT-   -17.733 (meters)        (06/27/12)   ADJUSTED
 DJ3497* NAD 83(2011) EPOCH   -  2010.00
 DJ3497* NAVD 88 ORTHO HEIGHT -    15.94  (meters)       52.3   (feet) GPS OBS
 DJ3497  ______________________________________________________________________
 DJ3497  GEOID HEIGHT    -        -33.686 (meters)                     GEOID18
 DJ3497  NAD 83(2011) X  -  1,206,249.371 (meters)                     COMP
 DJ3497  NAD 83(2011) Y  - -4,800,556.689 (meters)                     COMP
 DJ3497  NAD 83(2011) Z  -  4,008,953.453 (meters)                     COMP
 DJ3497  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 DJ3497
 DJ3497  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ3497  Standards:
 DJ3497         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ3497            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ3497  -------------------------------------------------------------------
 DJ3497  NETWORK    0.68   1.53           0.30   0.25   0.78     -0.20012503
 DJ3497  -------------------------------------------------------------------
 DJ3497  Click here for local accuracies and other accuracy information.
 DJ3497
 DJ3497.The horizontal coordinates were established by GPS observations
 DJ3497.and adjusted by the National Geodetic Survey in June 2012.
 DJ3497
 DJ3497.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ3497.been affixed to the stable North American tectonic plate. See 
 DJ3497.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ3497
 DJ3497.The horizontal coordinates are valid at the epoch date displayed above
 DJ3497.which is a decimal equivalence of Year/Month/Day.
 DJ3497
 DJ3497.The orthometric height was determined by GPS observations and a
 DJ3497.high-resolution geoid model using precise GPS observation and
 DJ3497.processing techniques.
 DJ3497
 DJ3497.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ3497.GEOID18 height accuracy estimate available here.
 DJ3497
 DJ3497.Click photographs - Photos may exist for this station.
 DJ3497
 DJ3497.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ3497
 DJ3497.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ3497
 DJ3497.The ellipsoidal height was determined by GPS observations
 DJ3497.and is referenced to NAD 83.
 DJ3497
 DJ3497. The following values were computed from the NAD 83(2011) position.
 DJ3497
 DJ3497;                    North         East     Units Scale Factor Converg.
 DJ3497;SPC MD       -   170,033.718   495,443.513   MT  0.99996516   +0 41 36.4
 DJ3497;SPC MD       -   557,852.29  1,625,467.59   sFT  0.99996516   +0 41 36.4
 DJ3497;UTM  18      - 4,338,600.447   422,698.853   MT  0.99967357   -0 33 56.5
 DJ3497
 DJ3497!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ3497!SPC MD       -   1.00000278  x   0.99996516  =   0.99996794
 DJ3497!UTM  18      -   1.00000278  x   0.99967357  =   0.99967635
 DJ3497
 DJ3497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2269838600(NAD 83)
 DJ3497
 DJ3497|---------------------------------------------------------------------|
 DJ3497| PID    Reference Object                     Distance      Geod. Az  |
 DJ3497|                                                           dddmmss.s |
 DJ3497| JU4391 ACADEMY AZ MK                       397.852 METERS 32545     |
 DJ3497|---------------------------------------------------------------------|
 DJ3497
 DJ3497                          SUPERSEDED SURVEY CONTROL
 DJ3497
 DJ3497  NAD 83(2007)-  39 11 35.59440(N)    075 53 42.50565(W) AD(2002.00) 1
 DJ3497  ELLIP H (04/02/09)  -17.705  (m)                       GP(2002.00) 4 1
 DJ3497  NAD 83(1991)-  39 11 35.59445(N)    075 53 42.50581(W) AD(       ) 1
 DJ3497  ELLIP H (10/15/07)  -17.700  (m)                       GP(       ) 4 1
 DJ3497  NAVD 88 (10/15/07)   16.0    (m)  GEOID03  model used  GPS OBS        
 DJ3497
 DJ3497.Superseded values are not recommended for survey control.
 DJ3497
 DJ3497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ3497.See file dsdata.pdf to determine how the superseded data were derived.
 DJ3497
 DJ3497_MARKER: DD = SURVEY DISK
 DJ3497_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ3497_STAMPING: ACADEMY 1989
 DJ3497_MARK LOGO: MDSHA
 DJ3497_PROJECTION: RECESSED 5 CENTIMETERS
 DJ3497_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ3497_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ3497+STABILITY: SURFACE MOTION
 DJ3497_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ3497+SATELLITE: SATELLITE OBSERVATIONS - March 02, 2021
 DJ3497
 DJ3497  HISTORY     - Date     Condition        Report By
 DJ3497  HISTORY     - 1989     MONUMENTED       MDSHA
 DJ3497  HISTORY     - 20020626 GOOD             MDSHA
 DJ3497  HISTORY     - 20210302 GOOD             MDSHA
 DJ3497
 DJ3497                          STATION DESCRIPTION
 DJ3497
 DJ3497'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 DJ3497'THE MARK IS LOCATED ABOUT 2.2 MI (3.54 KM) WEST OF SUDLERSVILLE, 1.7
 DJ3497'MI (2.74 KM) SOUTH-SOUTHEAST OF PONDTOWN AND 0.6 MI (0.97 KM)
 DJ3497'NORTH-NORTHWEST OF DUDLEY CORNERS.
 DJ3497'
 DJ3497'TO REACH THE MARK FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND MD
 DJ3497'ROUTE 290, GO SOUTHEAST ON MD ROUTE 290 TOWARDS DUDLEY CORNER FOR 0.6
 DJ3497'MILE (1.0 KM) TO THE MARK ON THE RIGHT AT THE EXIT TO THE EASTERN
 DJ3497'SHORE ACADEMY OF SEVENTH DAY ADVENTISTS SCHOOL.
 DJ3497'
 DJ3497'THE MARK IS 35.0 FEET (10.7 M) SOUTHWEST OF THE CENTERLINE OF MD ROUTE
 DJ3497'290, 65.0 FEET (19.8 M) NORTHWEST OF THE CENTERLINE OF A MACADAM EXIT
 DJ3497'ROAD FROM THE SCHOOL, 43.5 NORTH OF A 3-INCH (8 CM) MAPLE, 156.0 FEET
 DJ3497'(47.5 M) SOUTHEAST OF THE BRICK BUILDING, 58.5 FEET (17.8 M) SOUTHEAST
 DJ3497'OF A 3-INCH (8 CM) MAPLE TREE AND SET IN THE TOP OF A 10-INCH (25 CM)
 DJ3497'ROUND CONCRETE POST FLUSH WITH THE GROUND.
 DJ3497
 DJ3497                          STATION RECOVERY (2021)
 DJ3497
 DJ3497'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DJ3497'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4391 ***********************************************************************
 JU4391  DESIGNATION -  ACADEMY AZ MK
 JU4391  PID         -  JU4391
 JU4391  STATE/COUNTY-  MD/QUEEN ANNES
 JU4391  COUNTRY     -  US
 JU4391  USGS QUAD   -  CHURCH HILL (2017)
 JU4391
 JU4391                         *CURRENT SURVEY CONTROL
 JU4391  ______________________________________________________________________
 JU4391* NAD 83(2011) POSITION- 39 11 46.25759(N) 075 53 51.83684(W)   ADJUSTED
 JU4391* NAD 83(2011) ELLIP HT-   -20.325 (meters)        (06/27/12)   ADJUSTED
 JU4391* NAD 83(2011) EPOCH   -  2010.00
 JU4391* NAVD 88 ORTHO HEIGHT -    13.347 (meters)       43.79  (feet) ADJUSTED
 JU4391  ______________________________________________________________________
 JU4391  GEOID HEIGHT    -        -33.676 (meters)                     GEOID18
 JU4391  NAD 83(2011) X  -  1,205,981.056 (meters)                     COMP
 JU4391  NAD 83(2011) Y  - -4,800,407.758 (meters)                     COMP
 JU4391  NAD 83(2011) Z  -  4,009,206.669 (meters)                     COMP
 JU4391  LAPLACE CORR    -         -2.97  (seconds)                    DEFLEC18
 JU4391  DYNAMIC HEIGHT  -         13.340 (meters)       43.77  (feet) COMP
 JU4391  MODELED GRAVITY -    980,104.7   (mgal)                       NAVD 88
 JU4391
 JU4391  VERT ORDER      -  SECOND    CLASS I
 JU4391
 JU4391  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4391  Standards:
 JU4391         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4391            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4391  -------------------------------------------------------------------
 JU4391  NETWORK    2.63   3.86           0.92   1.19   1.97     -0.07904345
 JU4391  -------------------------------------------------------------------
 JU4391  Click here for local accuracies and other accuracy information.
 JU4391
 JU4391.The horizontal coordinates were established by GPS observations
 JU4391.and adjusted by the National Geodetic Survey in June 2012.
 JU4391
 JU4391.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4391.been affixed to the stable North American tectonic plate. See 
 JU4391.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4391
 JU4391.The horizontal coordinates are valid at the epoch date displayed above
 JU4391.which is a decimal equivalence of Year/Month/Day.
 JU4391
 JU4391.The orthometric height was determined by differential leveling and
 JU4391.adjusted by the NATIONAL GEODETIC SURVEY
 JU4391.in July 1996.
 JU4391
 JU4391.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4391.GEOID18 height accuracy estimate available here.
 JU4391
 JU4391.Click photographs - Photos may exist for this station.
 JU4391
 JU4391.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4391
 JU4391.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4391
 JU4391.The ellipsoidal height was determined by GPS observations
 JU4391.and is referenced to NAD 83.
 JU4391
 JU4391.The dynamic height is computed by dividing the NAVD 88
 JU4391.geopotential number by the normal gravity value computed on the
 JU4391.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4391.degrees latitude (g = 980.6199 gals.).
 JU4391
 JU4391.The modeled gravity was interpolated from observed gravity values.
 JU4391
 JU4391. The following values were computed from the NAD 83(2011) position.
 JU4391
 JU4391;                    North         East     Units Scale Factor Converg.
 JU4391;SPC MD       -   170,359.820   495,215.626   MT  0.99996544   +0 41 30.6
 JU4391;SPC MD       -   558,922.18  1,624,719.93   sFT  0.99996544   +0 41 30.6
 JU4391;UTM  18      - 4,338,931.382   422,478.251   MT  0.99967399   -0 34 02.6
 JU4391
 JU4391!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4391!SPC MD       -   1.00000319  x   0.99996544  =   0.99996863
 JU4391!UTM  18      -   1.00000319  x   0.99967399  =   0.99967718
 JU4391
 JU4391_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2247838931(NAD 83)
 JU4391
 JU4391|---------------------------------------------------------------------|
 JU4391| PID    Reference Object                     Distance      Geod. Az  |
 JU4391|                                                           dddmmss.s |
 JU4391| DJ3497 ACADEMY                             397.852 METERS 14545     |
 JU4391|---------------------------------------------------------------------|
 JU4391
 JU4391                          SUPERSEDED SURVEY CONTROL
 JU4391
 JU4391  NAD 83(2007)-  39 11 46.25779(N)    075 53 51.83756(W) AD(2002.00) 1
 JU4391  ELLIP H (04/02/09)  -20.296  (m)                       GP(2002.00) 4 1
 JU4391  NAD 83(1991)-  39 11 46.25783(N)    075 53 51.83772(W) AD(       ) 1
 JU4391  ELLIP H (10/15/07)  -20.292  (m)                       GP(       ) 4 1
 JU4391  NAVD 88              13.35   (m)           43.8    (f) LEVELING    3  
 JU4391
 JU4391.Superseded values are not recommended for survey control.
 JU4391
 JU4391.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4391.See file dsdata.pdf to determine how the superseded data were derived.
 JU4391
 JU4391_MARKER: DD = SURVEY DISK
 JU4391_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4391_STAMPING: ACADEMY AZ 1991
 JU4391_MARK LOGO: MDSHA
 JU4391_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4391_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4391+STABILITY: SURFACE MOTION
 JU4391_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4391+SATELLITE: SATELLITE OBSERVATIONS - June 26, 2002
 JU4391
 JU4391  HISTORY     - Date     Condition        Report By
 JU4391  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4391  HISTORY     - 20020301 GOOD             USPSQD
 JU4391  HISTORY     - 20020626 GOOD             MDSHA
 JU4391
 JU4391                          STATION DESCRIPTION
 JU4391
 JU4391'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4391'THE MARKER IS LOCATED ABOUT 6.0 MI (9.7 KM) NORTHWEST OF CHURCH HILL,
 JU4391'3.4 MI (5.5 KM) SOUTHEAST OF CRUMPTON AND ALONG STATE HIGHWAY 290.  IT
 JU4391'IS ON ROAD RIGHT-OF-WAY.
 JU4391'
 JU4391'TO REACH THE MARKER FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND
 JU4391'STATE HIGHWAY 290, GO SOUTHEAST ON STATE HIGHWAY 290 FOR 0.3 MI
 JU4391'(0.5 KM) TO THE MARKER ON THE RIGHT.
 JU4391'
 JU4391'THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION
 JU4391'SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRTETE
 JU4391'MONUMENT WHICH IS FLUSH WITH THE SUFACE OF THE GROUND.  IT IS 38.5 FT
 JU4391'(11.7 M) SOUTHWEST OF THE CENTER OF STATE HIGHWAY 290, 200 FT (61.0 M)
 JU4391'NORTHWEST OF THE CENTER OF A DRIVEWAY AND 18.0 FT (5.5 M)
 JU4391'NORTH-NORTHWEST OF CHOPTANK POWER POLE NUMBER 115 84 8.
 JU4391
 JU4391                          STATION RECOVERY (2002)
 JU4391
 JU4391'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4391'MONUMENT IS NOW 2 INCHES BELOW GROUND LEVEL IN A LAWN.
 JU4391
 JU4391                          STATION RECOVERY (2002)
 JU4391
 JU4391'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 JU4391'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8014 ***********************************************************************
 AJ8014  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8014  DESIGNATION -  ACCOK
 AJ8014  PID         -  AJ8014
 AJ8014  STATE/COUNTY-  MD/PRINCE GEORGES
 AJ8014  COUNTRY     -  US
 AJ8014  USGS QUAD   -  MOUNT VERNON (2019)
 AJ8014
 AJ8014                         *CURRENT SURVEY CONTROL
 AJ8014  ______________________________________________________________________
 AJ8014* NAD 83(2011) POSITION- 38 40 30.84386(N) 077 00 24.15305(W)   ADJUSTED
 AJ8014* NAD 83(2011) ELLIP HT-    28.830 (meters)        (06/27/12)   ADJUSTED
 AJ8014* NAD 83(2011) EPOCH   -  2010.00
 AJ8014* NAVD 88 ORTHO HEIGHT -    61.4   (meters)      201.    (feet) GPS OBS
 AJ8014  ______________________________________________________________________
 AJ8014  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8014  GEOID HEIGHT    -        -32.504 (meters)                     GEOID99
 AJ8014  GEOID HEIGHT    -        -32.544 (meters)                     GEOID18
 AJ8014  NAD 83(2011) X  -  1,121,027.895 (meters)                     COMP
 AJ8014  NAD 83(2011) Y  - -4,858,300.699 (meters)                     COMP
 AJ8014  NAD 83(2011) Z  -  3,964,252.441 (meters)                     COMP
 AJ8014  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 AJ8014
 AJ8014  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8014  Standards:
 AJ8014         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8014            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8014  -------------------------------------------------------------------
 AJ8014  NETWORK    0.65   1.35           0.29   0.24   0.69      0.02169321
 AJ8014  -------------------------------------------------------------------
 AJ8014  Click here for local accuracies and other accuracy information.
 AJ8014
 AJ8014.The horizontal coordinates were established by GPS observations
 AJ8014.and adjusted by the National Geodetic Survey in June 2012.
 AJ8014
 AJ8014.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8014.been affixed to the stable North American tectonic plate. See 
 AJ8014.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8014
 AJ8014.The horizontal coordinates are valid at the epoch date displayed above
 AJ8014.which is a decimal equivalence of Year/Month/Day.
 AJ8014
 AJ8014.The orthometric height was determined by GPS observations and a
 AJ8014.high-resolution geoid model.
 AJ8014
 AJ8014.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8014.GEOID18 height accuracy estimate available here.
 AJ8014
 AJ8014.Click photographs - Photos may exist for this station.
 AJ8014
 AJ8014.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8014
 AJ8014.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8014
 AJ8014.The ellipsoidal height was determined by GPS observations
 AJ8014.and is referenced to NAD 83.
 AJ8014
 AJ8014. The following values were computed from the NAD 83(2011) position.
 AJ8014
 AJ8014;                    North         East     Units Scale Factor Converg.
 AJ8014;SPC MD       -   111,954.978   399,416.186   MT  0.99995594   -0 00 15.2
 AJ8014;SPC MD       -   367,305.62  1,310,417.94   sFT  0.99995594   -0 00 15.2
 AJ8014;UTM  18      - 4,282,648.733   325,436.088   MT  0.99997526   -1 15 15.6
 AJ8014
 AJ8014!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8014!SPC MD       -   0.99999548  x   0.99995594  =   0.99995142
 AJ8014!UTM  18      -   0.99999548  x   0.99997526  =   0.99997074
 AJ8014
 AJ8014_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2543682648(NAD 83)
 AJ8014
 AJ8014                          SUPERSEDED SURVEY CONTROL
 AJ8014
 AJ8014  NAD 83(2007)-  38 40 30.84416(N)    077 00 24.15376(W) AD(2002.00) 0
 AJ8014  ELLIP H (02/10/07)   28.856  (m)                       GP(2002.00)    
 AJ8014  NAD 83(1991)-  38 40 30.84418(N)    077 00 24.15381(W) AD(       ) A
 AJ8014  ELLIP H (02/12/02)   28.853  (m)                       GP(       ) 4 1
 AJ8014
 AJ8014.Superseded values are not recommended for survey control.
 AJ8014
 AJ8014.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8014.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8014
 AJ8014_MARKER: DD = SURVEY DISK
 AJ8014_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8014_STAMPING: ACCOK 2000
 AJ8014_MARK LOGO: MDSHA
 AJ8014_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8014_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8014+STABILITY: SURFACE MOTION
 AJ8014_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8014+SATELLITE: SATELLITE OBSERVATIONS - August 01, 2006
 AJ8014
 AJ8014  HISTORY     - Date     Condition        Report By
 AJ8014  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ8014  HISTORY     - 20060801 GOOD             MDSHA
 AJ8014
 AJ8014                          STATION DESCRIPTION
 AJ8014
 AJ8014'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8014'THE STATION IS LOCATED ABOUT 1.3 MILES (2.1 KM) NORTHEAST OF ACCOKEEK,
 AJ8014'6.2 MILES (10.0 KM) NORTHWEST OF WALDORF, AND 9.0 MILES (14.5 KM)
 AJ8014'SOUTH OF OXON HILL.  TO REACH THE STATION FROM THE INTERSECTION OF
 AJ8014'U.S.HIGHWAY 301, BUSINESS HIGHWAY 5 AND STATE HIGHWAY 228 IN WALDORF,
 AJ8014'GO NORTHWEST ALONG STATE HIGHWAY 228 FOR 6.9 MILES (11.1 KM) TO STATE
 AJ8014'HIGHWAY 210.  BEAR RIGHT AND GO NORTH ALONG STATE HIGHWAY 210 FOR 0.4
 AJ8014'MILES (0.6 KM) TO STATE HIGHWAY 373.  TURN LEFT AND GO WEST ALONG
 AJ8014'STATE HIGHWAY 373 FOR 0.1 MILES (0.2 KM) TO BIDDLE ROAD, TURN RIGHT
 AJ8014'AND GO NORTH ALONG BIDDLE ROAD FOR 0.05 MILES (0.08 KM) TO BRYAN POINT
 AJ8014'ROAD.  TURN RIGHT AND GO EAST ALONG BRYAN POINT ROAD FOR 0.05 MILES
 AJ8014'(0.08 KM) TO A SERVICE ROAD ON THE LEFT.  TURN LEFT AND GO NORTHEAST
 AJ8014'ALONG THE SERVICE ROAD FOR 0.45 MILES (0.72 KM) TO AN EXIT RAMP FROM
 AJ8014'SOUTHBOUND ROUTE 210 AND THE STATION ON THE RIGHT BEFORE ENTERING THE
 AJ8014'FARMINGTON WOODS DEVELOPMENT.  THE STATION IS A MARYLAND STATE HIGHWAY
 AJ8014'SURVEY DISK SET IN THE TOP OF A 12 INCH ROUND CONCRETE MONUMENT WHICH
 AJ8014'IS FLUSH WITH THE GROUND.  IT IS 43.5 FEET (13.3 M) SOUTHEAST OF THE
 AJ8014'CENTER OF THE SERVICE ROAD, 54.5 FEET (16.6 M) SOUTH-SOUTHEAST OF THE
 AJ8014'JUNCTION OF THE EXIT RAMP AND THE SERVICE ROAD, 75.8 FEET (23.1 M)
 AJ8014'NORTHWEST OF THE NORTHWEST EDGE OF SHOULDER FOR SOUTHBOUND HIGHWAY
 AJ8014'210, 128.0 FEET (39.0 M) SOUTH OF THE SOUTHEAST CORNER OF THE
 AJ8014'SOUTHERLY MOST BRICK COLUMN LEADING INTO FARMINGTON WOODS, AND ABOUT 6
 AJ8014'FEET (1.8 M) ABOVE THE LEVEL OF THE HIGHWAY.
 AJ8014
 AJ8014                          STATION RECOVERY (2006)
 AJ8014
 AJ8014'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2006 (MPM)
 AJ8014'RECOVERED AS DESCRIBED, HOWEVER, THE MARK IS NOW LOCATED UNDER A
 AJ8014'LANDSCAPED BERM AND IS 2.0 FEET BELOW THE SURFACE. A 12 INCH DIA.
 AJ8014'GALVANIZED METAL PIPE WAS SET VERTICALLY AND PROTRUDES 0.3 FEET TO
 AJ8014'PREVENT BACKFILL. THE MARK IS 2.5 FEET WEST OF A CARSONITE WITNESS
 AJ8014'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4978 ***********************************************************************
 HV4978  DESIGNATION -  ACCOKEEK
 HV4978  PID         -  HV4978
 HV4978  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4978  COUNTRY     -  US
 HV4978  USGS QUAD   -  MOUNT VERNON (2019)
 HV4978
 HV4978                         *CURRENT SURVEY CONTROL
 HV4978  ______________________________________________________________________
 HV4978* NAD 83(1993) POSITION- 38 40 14.93279(N) 077 01 36.57321(W)   ADJUSTED
 HV4978* NAVD 88 ORTHO HEIGHT -    58.8   (meters)      193.    (feet) VERTCON3
 HV4978  ______________________________________________________________________
 HV4978  GEOID HEIGHT    -        -32.520 (meters)                     GEOID18
 HV4978  LAPLACE CORR    -         -2.82  (seconds)                    DEFLEC18
 HV4978  HORZ ORDER      -  FIRST
 HV4978
 HV4978.The horizontal coordinates were established by classical geodetic methods
 HV4978.and adjusted by the National Geodetic Survey in November 1994.
 HV4978
 HV4978.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4978.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4978
 HV4978.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4978.GEOID18 height accuracy estimate available here.
 HV4978
 HV4978.Click photographs - Photos may exist for this station.
 HV4978
 HV4978.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4978
 HV4978. The following values were computed from the NAD 83(1993) position.
 HV4978
 HV4978;                    North         East     Units Scale Factor Converg.
 HV4978;SPC MD       -   111,464.689   397,665.542   MT  0.99995621   -0 01 00.6
 HV4978;SPC MD       -   365,697.07  1,304,674.37   sFT  0.99995621   -0 01 00.6
 HV4978;SPC VA N     - 2,112,487.749 3,628,192.920   MT  0.99994882   +0 55 10.0
 HV4978;SPC VA N     - 6,930,720.22 11,903,496.27   sFT  0.99994882   +0 55 10.0
 HV4978;UTM  18      - 4,282,196.741   323,675.125   MT  0.99998287   -1 16 00.4
 HV4978
 HV4978!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4978!SPC MD       -   0.99999588  x   0.99995621  =   0.99995209
 HV4978!SPC VA N     -   0.99999588  x   0.99994882  =   0.99994470
 HV4978!UTM  18      -   0.99999588  x   0.99998287  =   0.99997875
 HV4978
 HV4978:                Primary Azimuth Mark                     Grid Az
 HV4978:SPC MD       -  KENLON                                   209 35 00.1
 HV4978:SPC VA N     -  KENLON                                   208 38 49.5
 HV4978:UTM  18      -  KENLON                                   210 49 59.9
 HV4978
 HV4978_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2367582196(NAD 83)
 HV4978
 HV4978|---------------------------------------------------------------------|
 HV4978| PID    Reference Object                     Distance      Geod. Az  |
 HV4978|                                                           dddmmss.s |
 HV4978| HV4977 ACCOKEEK FIRE DEPT SIREN TOWER        9.705 METERS 00923     |
 HV4978| DC6641 ACCOKEEK RM 3                                      0304754.5 |
 HV4978| DC6639 ACCOKEEK RM 1                        29.719 METERS 10542     |
 HV4978| DC6640 ACCOKEEK RM 2                        26.454 METERS 18744     |
 HV4978| HV4976 KENLON                              APPROX. 3.8 KM 2093359.5 |
 HV4978|---------------------------------------------------------------------|
 HV4978
 HV4978                          SUPERSEDED SURVEY CONTROL
 HV4978
 HV4978  NAD 83(1991)-  38 40 14.93122(N)    077 01 36.57466(W) AD(       ) 1
 HV4978  NAD 83(1986)-  38 40 14.93188(N)    077 01 36.58829(W) AD(       ) 1
 HV4978  NAD 27      -  38 40 14.51586(N)    077 01 37.67470(W) AD(       ) 1
 HV4978  NGVD 29 (07/19/86)   59.0    (m)          194.     (f) VERT ANG       
 HV4978
 HV4978.Superseded values are not recommended for survey control.
 HV4978
 HV4978.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4978.See file dsdata.pdf to determine how the superseded data were derived.
 HV4978
 HV4978_MARKER: DS = TRIANGULATION STATION DISK
 HV4978_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4978_STAMPING: ACCOKEEK 1970
 HV4978_MARK LOGO: CGS
 HV4978_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4978+STABILITY: SURFACE MOTION
 HV4978_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV4978+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2004
 HV4978
 HV4978  HISTORY     - Date     Condition        Report By
 HV4978  HISTORY     - 1970     MONUMENTED       NGS
 HV4978  HISTORY     - 20040915 GOOD             GEOCAC
 HV4978
 HV4978                          STATION DESCRIPTION
 HV4978
 HV4978'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV4978'THE STATION IS LOCATED IN THE TOWN OF ACCOKEEK AND IS BEHIND THE
 HV4978'ACCOKEEK VOLUNTEER FIRE STATION.  PERMISSION WAS GRANTED BY
 HV4978'MR. CLIFFORD MONTGOMERY, CHAIRMAN OF THE BOARD, ACCOKEEK VOLUNTEER
 HV4978'FIRE DEPARTMENT.  PHONE NUMBER BUTLER 3-2730.
 HV4978'
 HV4978'THE STATION MARK IS A STANDARD DISK, STAMPED ACCOKEEK 1970, AND
 HV4978'IS SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV4978'THAT IS FLUSH WITH THE GROUND.  IT IS 119.6 FEET NORTHWEST OF THE
 HV4978'NORTHEAST CORNER OF THE FIRE STATION BUILDING, 77.7 FEET NORTH OF
 HV4978'A SIREN POLE, 43.6 FEET NORTH OF THE NORTHWEST CORNER OF A SMALL
 HV4978'CONCRETE BUILDING, AND 16.0 FEET EAST OF A FENCE.  THE
 HV4978'UNDERGROUND MARK IS 42 INCHES BELOW THE GROUND SURFACE.
 HV4978'
 HV4978'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED ACCOKEEK NO 1 1970,
 HV4978'AND IS SET IN TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV4978'THAT IS FLUSH WITH THE GROUND.  IT IS 75.4 FEET EAST-NORTHEAST
 HV4978'OF THE NORTHEAST CORNER OF A CONCRETE BLOCK BUILDING, 46.6 FEET
 HV4978'NORTH OF THE NORTHEAST CORNER OF THE FIRE HOUSE BUILDING, AND
 HV4978'12.0 FEET NORTH OF THE NORTH EDGE OF A PAVED PARKING AREA.  IT IS
 HV4978'ABOUT THE SAME ELEVATION AS THE STATION.
 HV4978'
 HV4978'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED ACCOKEEK NO 2 1970,
 HV4978'AND IS SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 HV4978'DIAMETER, THAT IS FLUSH WITH THE GROUND.  IT IS 34.9 FEET WEST
 HV4978'OF THE NORTHWEST CORNER OF THE FIRE HOUSE BUILDING, 25.8 FEET
 HV4978'SOUTHWEST OF THE SOUTHWEST CORNER OF THE BLOCK BUILDING, 10.9
 HV4978'FEET SOUTHWEST OF A POLE WITH A SIREN, 1.5 FEET NORTH OF A
 HV4978'WITNESS POST, AND 1.0 FOOT EAST OF A FENCE.
 HV4978'
 HV4978'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED ACCOKEEK NO 3 1970,
 HV4978'AND IS SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 HV4978'DIAMETER, AND PROJECTS ABOUT 5 INCHES ABOVE THE GROUND.  IT IS
 HV4978'14.0 FEET WEST OF THE CENTERLINE OF A GRAVELED ROAD, 1.7 FEET
 HV4978'NORTH OF A WITNESS POST, AND 1.0 FOOT WEST OF A FENCE.
 HV4978
 HV4978                          STATION RECOVERY (2004)
 HV4978
 HV4978'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV4978'THE 1970 STATION DESCRIPTION REMAINS VALID EXCEPT THAT THE STATION IS
 HV4978'ONE FOOT NORTH OF A METAL WITNESS POST AND THE DESCRIBED FENCE IS NO
 HV4978'LONGER THERE.
 HV4978'SEARCHED FOR BUT COULD NOT FIND RM1.  A NEW BUILDING HAS BEEN ERECTED
 HV4978'IMMEDIATELY NORTH OF THE FIRE STATION AND THE AREA BETWEEN THE TWO
 HV4978'BUILDINGS IS NOW A PAVED PARKING AREA.  THE DESCRIBED LOCATION FOR RM1
 HV4978'LIES WITHIN THE PARKING AREA.
 HV4978'SEARCHED FOR BUT COULD NOT FIND RM2.  THE AREA HAS BEEN LANDSCAPED,
 HV4978'THE DESCRIBED FENCE IS NO LONGER THERE, AND THERE IS NO WITNESS POST
 HV4978'AT THE DESCRIBED LOCATION.
 HV4978'DID NOT SEARCH FOR RM3.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5203 ***********************************************************************
 JV5203  DESIGNATION -  ACRE
 JV5203  PID         -  JV5203
 JV5203  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5203  COUNTRY     -  US
 JV5203  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5203
 JV5203                         *CURRENT SURVEY CONTROL
 JV5203  ______________________________________________________________________
 JV5203* NAD 83(1991) POSITION- 39 03 37.55695(N) 076 27 41.11458(W)   ADJUSTED
 JV5203* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5203  ______________________________________________________________________
 JV5203  GEOID HEIGHT    -        -33.268 (meters)                     GEOID18
 JV5203  LAPLACE CORR    -         -2.95  (seconds)                    DEFLEC18
 JV5203  HORZ ORDER      -  THIRD
 JV5203
 JV5203.The horizontal coordinates were established by classical geodetic methods
 JV5203.and adjusted by the National Geodetic Survey in January 1992.
 JV5203
 JV5203.The orthometric height was scaled from a topographic map.
 JV5203
 JV5203.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5203.GEOID18 height accuracy estimate available here.
 JV5203
 JV5203.Click photographs - Photos may exist for this station.
 JV5203
 JV5203.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5203
 JV5203. The following values were computed from the NAD 83(1991) position.
 JV5203
 JV5203;                    North         East     Units Scale Factor Converg.
 JV5203;SPC MD       -   154,852.376   446,613.106   MT  0.99995502   +0 20 16.9
 JV5203;SPC MD       -   508,044.84  1,465,263.17   sFT  0.99995502   +0 20 16.9
 JV5203;UTM  18      - 4,324,499.133   373,557.881   MT  0.99979686   -0 55 15.7
 JV5203
 JV5203!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5203!SPC MD       -   1.00000510  x   0.99995502  =   0.99996012
 JV5203!UTM  18      -   1.00000510  x   0.99979686  =   0.99980196
 JV5203
 JV5203:                Primary Azimuth Mark                     Grid Az
 JV5203:SPC MD       -  ULM                                      285 58 22.2
 JV5203:UTM  18      -  ULM                                      287 13 54.8
 JV5203
 JV5203_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7355724499(NAD 83)
 JV5203
 JV5203|---------------------------------------------------------------------|
 JV5203| PID    Reference Object                     Distance      Geod. Az  |
 JV5203|                                                           dddmmss.s |
 JV5203| JV5177 REVELL 2 RM                          14.109 METERS 06947     |
 JV5203| JV5216 SHORE ACRES FLAGPOLE                 60.905 METERS 09217     |
 JV5203| CA9859 ACRE RM                                            18259     |
 JV5203| JV5233 ULM                                 APPROX. 1.8 KM 2861839.1 |
 JV5203|---------------------------------------------------------------------|
 JV5203
 JV5203                          SUPERSEDED SURVEY CONTROL
 JV5203
 JV5203  NAD 83(1986)-  39 03 37.55290(N)    076 27 41.12537(W) AD(       ) 3
 JV5203  NAD 27      -  39 03 37.15200(N)    076 27 42.26400(W) AD(       ) 3
 JV5203
 JV5203.Superseded values are not recommended for survey control.
 JV5203
 JV5203.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5203.See file dsdata.pdf to determine how the superseded data were derived.
 JV5203
 JV5203_MARKER: DS = TRIANGULATION STATION DISK
 JV5203_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5203_STAMPING: ACRE 1933
 JV5203_MARK LOGO: CGS
 JV5203_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5203+STABILITY: SURFACE MOTION
 JV5203
 JV5203  HISTORY     - Date     Condition        Report By
 JV5203  HISTORY     - 1933     MONUMENTED       CGS
 JV5203  HISTORY     - 1955     GOOD             CGS
 JV5203  HISTORY     - 1961     GOOD             CGS
 JV5203  HISTORY     - 1988     GOOD             MDDNR
 JV5203
 JV5203                          STATION DESCRIPTION
 JV5203
 JV5203'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5203'ON THE SOUTH SHORE OF THE MAGOTHY RIVER, ABOUT ONE THIRD OF THE
 JV5203'DISTANCE FROM DEEP CREEK TO FORKED CREEK, ON SHORE ACRES, ON OR
 JV5203'NEAR THE WESTERN EDGE OF THE FRONT YARD OF THE RESIDENCE OF MRS.
 JV5203'FRANCES PURDY, ON TOP OF THE BANK AND ABOUT 27 FEET SOUTH OF ITS
 JV5203'CREST, ABOUT 15 FEET ABOVE AND 50 FEET BACK FROM HIGH WATER MARK.
 JV5203'SEA WALL AT THIS POINT HAS BEEN DESTROYED AND BANK WASHED MORE
 JV5203'THAN ADJOINING PROPERTY.  REFERENCE MARK IS 11.3 FEET WEST OF THE
 JV5203'S.W. CORNER OF MAIN PART OF HOUSE.  MARYLAND SHELL FISH SURVEY
 JV5203'MONUMENT IS 5.20 METERS (17.1 FEET) EAST OF EAST EDGE OF FRONT
 JV5203'CONCRETE WALK AND 12.6 METERS (41.4 FEET) NORTH OF NORTH EDGE OF
 JV5203'FRONT PORCH PURDY HOUSE.  STATION AND REFERENCE MARKS ARE SET
 JV5203'FLUSH WITH THE SURFACE OF THE LAWN.  M.S.F.S. MONUMENT PROJECTS
 JV5203'ABOUT 4 INCHES ABOVE THE LAWN.  DISTANCES AND BEARINGS FROM THE
 JV5203'STATION TO OTHER POINTS OF REFERENCE ARE AS FOLLOWS--WEST EDGE OF
 JV5203'3 FOOT CONCRETE FRONT WALK, 6.90 METERS (22.7 FEET), 280 DEG
 JV5203'(MAG.).  N.W. CORNER PORCH PURDY HOUSE, 7.65 METERS (25.10 FEET),
 JV5203'348 DEG (MAG.).
 JV5203
 JV5203                          STATION RECOVERY (1955)
 JV5203
 JV5203'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (EHK)
 JV5203'STATION AND REFERENCE MARK RECOVERED IN GOOD CONDITION AND AS
 JV5203'DESCRIBED WITH THE FOLLOWING EXCEPTIONS--
 JV5203'
 JV5203'STATION IS NOW ON THE PROPERTY OF CAPT. J. FAIRLEY, 25.1 FT. NW OF
 JV5203'THE NW CORNER OF THE HOUSE, 22.7 FT. W OF THE W EDGE OF THE WALK
 JV5203'TO THE BEACH, 42.2 FT. SW OF THE FLAGPOLE, AND COVERED BY 4 IN. OF
 JV5203'SOD.
 JV5203
 JV5203                          STATION RECOVERY (1961)
 JV5203
 JV5203'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5203'STATION RECOVERED IN GOOD CONDITION.  THE AREA OF THE REFERENCE
 JV5203'MARK WAS COVERED BY SNOW AND ICE AND WAS NOT SEARCHED FOR.
 JV5203'DISTANCES TO REFERENCE POINTS LISTED IN THE 1955 DESCRIPTION BY
 JV5203'E.H.K. WERE CHECKED AND FOUND TO BE CORRECT.  STATION IS 2.6 FT.
 JV5203'E OF THE W EDGE OF A NEW CONCRETE WALK LEADING TO A SMALL HOUSE ON
 JV5203'THE SHORELINE.
 JV5203
 JV5203                          STATION RECOVERY (1988)
 JV5203
 JV5203'RECOVERY NOTE BY MD DEPT OF NAT RES 1988 (LW)
 JV5203'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6045 ***********************************************************************
 JV6045  DESIGNATION -  ACROSS
 JV6045  PID         -  JV6045
 JV6045  STATE/COUNTY-  MD/BALTIMORE
 JV6045  COUNTRY     -  US
 JV6045  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6045
 JV6045                         *CURRENT SURVEY CONTROL
 JV6045  ______________________________________________________________________
 JV6045* NAD 83(1991) POSITION- 39 18 19.00929(N) 076 47 42.23925(W)   ADJUSTED
 JV6045* NAVD 88 ORTHO HEIGHT -    94.    (meters)      308.    (feet) SCALED
 JV6045  ______________________________________________________________________
 JV6045  GEOID HEIGHT    -        -32.202 (meters)                     GEOID18
 JV6045  LAPLACE CORR    -         -2.68  (seconds)                    DEFLEC18
 JV6045  HORZ ORDER      -  THIRD
 JV6045
 JV6045.The horizontal coordinates were established by classical geodetic methods
 JV6045.and adjusted by the National Geodetic Survey in January 1992.
 JV6045
 JV6045.The orthometric height was scaled from a topographic map.
 JV6045
 JV6045.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6045.GEOID18 height accuracy estimate available here.
 JV6045
 JV6045.Click photographs - Photos may exist for this station.
 JV6045
 JV6045.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6045
 JV6045. The following values were computed from the NAD 83(1991) position.
 JV6045
 JV6045;                    North         East     Units Scale Factor Converg.
 JV6045;SPC MD       -   181,916.519   417,675.711   MT  0.99997789   +0 07 43.0
 JV6045;SPC MD       -   596,837.78  1,370,324.40   sFT  0.99997789   +0 07 43.0
 JV6045;UTM  18      - 4,352,190.847   345,227.143   MT  0.99989495   -1 08 14.3
 JV6045
 JV6045!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6045!SPC MD       -   0.99999034  x   0.99997789  =   0.99996823
 JV6045!UTM  18      -   0.99999034  x   0.99989495  =   0.99988529
 JV6045
 JV6045:                Primary Azimuth Mark                     Grid Az
 JV6045:SPC MD       -  CHESTNUT                                 185 57 51.5
 JV6045:UTM  18      -  CHESTNUT                                 187 13 48.8
 JV6045
 JV6045_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4522752190(NAD 83)
 JV6045
 JV6045|---------------------------------------------------------------------|
 JV6045| PID    Reference Object                     Distance      Geod. Az  |
 JV6045|                                                           dddmmss.s |
 JV6045| CA9860 ACROSS RM 1                          10.190 METERS 04914     |
 JV6045| JV6054 CHESTNUT                            APPROX. 1.1 KM 1860534.5 |
 JV6045| JV6057 HOLLOFIELD FIRE LOOKOUT TOWER       APPROX. 1.1 KM 1861057.2 |
 JV6045| JV6052 FIELD                               340.661 METERS 23835     |
 JV6045| CA9861 ACROSS RM 2                           8.702 METERS 26830     |
 JV6045|---------------------------------------------------------------------|
 JV6045
 JV6045                          SUPERSEDED SURVEY CONTROL
 JV6045
 JV6045  NAD 83(1986)-  39 18 19.00678(N)    076 47 42.24741(W) AD(       ) 3
 JV6045  NAD 27      -  39 18 18.62720(N)    076 47 43.33740(W) AD(       ) 3
 JV6045
 JV6045.Superseded values are not recommended for survey control.
 JV6045
 JV6045.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6045.See file dsdata.pdf to determine how the superseded data were derived.
 JV6045
 JV6045_MARKER: DS = TRIANGULATION STATION DISK
 JV6045_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV6045_STAMPING: ACROSS 1957
 JV6045_MARK LOGO: CGS
 JV6045_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6045
 JV6045  HISTORY     - Date     Condition        Report By
 JV6045  HISTORY     - 1957     MONUMENTED       CGS
 JV6045  HISTORY     - 1958     GOOD             CGS
 JV6045
 JV6045                          STATION DESCRIPTION
 JV6045
 JV6045'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6045'STATION IS LOCATED ON THE SOUTHEAST END OF TIMBERED RIDGE ABOUT
 JV6045'10.0 MILES WEST OF THE CENTER OF BALTIMORE AND ABOUT 2-1/2 MILES
 JV6045'NORTH OF ELLICOTT CITY.  STATION IS 16 FEET SOUTHWEST OF TREE AND
 JV6045'10 FEET NORTH-NORTHWEST OF TREE WITH TRIANGLE BLAZE.  THE MARK IS
 JV6045'A STANDARD BRONZE DISK SET IN CONCRETE IN A 4 INCH PIPE, PROJECTS
 JV6045'12 INCHES AND THE DISK IS STAMPED ACROSS 1957.
 JV6045'
 JV6045'REFERENCE MARK NO. 1 IS 21 FEET EAST OF 18 INCH TREE AND 36 FEET
 JV6045'EAST-NORTHEAST OF TREE WITH TRIANGLE BLAZE.  THE MARK IS A STANDARD
 JV6045'BRONZE DISK SET IN CONCRETE IN A 4 INCH PIPE, PROJECTS 18 INCHES
 JV6045'AND THE DISK IS STAMPED ACROSS NO 1 1957.
 JV6045'
 JV6045'REFERENCE MARK NO. 2 IS 35 FEET WEST-NORTHWEST OF TREE WITH
 JV6045'TRIANGLE BLAZE.  THE MARK IS A STANDARD BRONZE DISK SET IN A 4
 JV6045'INCH, PROJECTS 18 INCHES AND THE DISK IS STAMPED ACROSS NO 2 1957.
 JV6045'
 JV6045'TO REACH FROM THE JUNCTION OF U.S. HIGHWAYS NO. 40 AND 29 ABOUT
 JV6045'11.0 MILES WEST OF BALTIMORE, GO NORTHEAST ON U.S. HIGHWAY NO. 40
 JV6045'FOR 0.25 MILE TO ROAD LEFT.  TURN LEFT AND GO NORTHERLY FOR 1.15
 JV6045'MILE TO T INTERSECTION.  TURN RIGHT AND GO NORTHEAST AND NORTH ON
 JV6045'HOLOFIELD ROAD FOR 1.45 MILE TO RAILROAD CROSSING.  CONTINUE
 JV6045'ACROSS RAILROAD TRACKS AND GO 0.05 MILE TO EAST END OF BRIDGE
 JV6045'OVER PATAPSCO RIVER.  TURN SHARP RIGHT AND GO SOUTHERLY ALONG
 JV6045'EAST SIDE OF RIVER FOR 0.2 MILE TO OLD DEAD BEACH TREE AND END OF
 JV6045'TRUCK TRAVEL.  TAKE CENTER TRAIL OF THREE AND PACK EASTERLY
 JV6045'UP HILL FOR 100 FEET.  KEEP RIGHT TRAIL AND GO 300 YARDS TO
 JV6045'TOP OF RIDGE.  TURN RIGHT AND GO ALONG TOP OF RIDGE FOR
 JV6045'150 FEET TO POINT WHERE TRAIL TURNS LEFT DOWN HILL.  CONTINUE
 JV6045'STRAIGHT AHEAD ALONG RIDGE FOR 150 FEET TO TRIANGLE BLAZED TREE
 JV6045'AND STATION AS DESCRIBED.
 JV6045'
 JV6045'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV6045
 JV6045                          STATION RECOVERY (1958)
 JV6045
 JV6045'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV6045'STATION RECOVERED AS DESCRIBED.
 JV6045'
 JV6045'TRIANGULATION STATIONS ACROSS 1957 AND FIELD 1957 ARE INTERVISIBLE
 JV6045'FROM THE GROUND.
 JV6045'
 JV6045'TRAVERSE STATION HOLLO 1957 IN THE CEILING OF THE HOLLO FIELD
 JV6045'LOOKOUT TOWER IS ALSO VISIBLE FROM THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7186 ***********************************************************************
 JV7186  DESIGNATION -  ADAM
 JV7186  PID         -  JV7186
 JV7186  STATE/COUNTY-  MD/FREDERICK
 JV7186  COUNTRY     -  US
 JV7186  USGS QUAD   -  POINT OF ROCKS (2016)
 JV7186
 JV7186                         *CURRENT SURVEY CONTROL
 JV7186  ______________________________________________________________________
 JV7186* NAD 83(2011) POSITION- 39 18 34.07538(N) 077 30 11.10287(W)   ADJUSTED
 JV7186* NAD 83(2011) ELLIP HT-    64.998 (meters)        (06/27/12)   ADJUSTED
 JV7186* NAD 83(2011) EPOCH   -  2010.00
 JV7186* NAVD 88 ORTHO HEIGHT -    97.7   (meters)      321.    (feet) GPS OBS
 JV7186  ______________________________________________________________________
 JV7186  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7186  GEOID HEIGHT    -        -33.040 (meters)                     GEOID93
 JV7186  GEOID HEIGHT    -        -32.707 (meters)                     GEOID18
 JV7186  NAD 83(2011) X  -  1,069,316.580 (meters)                     COMP
 JV7186  NAD 83(2011) Y  - -4,824,604.382 (meters)                     COMP
 JV7186  NAD 83(2011) Z  -  4,018,999.588 (meters)                     COMP
 JV7186  LAPLACE CORR    -          3.65  (seconds)                    DEFLEC18
 JV7186
 JV7186  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7186  Standards:
 JV7186         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7186            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7186  -------------------------------------------------------------------
 JV7186  NETWORK    1.32   1.80           0.58   0.49   0.92      0.13027549
 JV7186  -------------------------------------------------------------------
 JV7186  Click here for local accuracies and other accuracy information.
 JV7186
 JV7186.The horizontal coordinates were established by GPS observations
 JV7186.and adjusted by the National Geodetic Survey in June 2012.
 JV7186
 JV7186.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7186.been affixed to the stable North American tectonic plate. See 
 JV7186.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7186
 JV7186.The horizontal coordinates are valid at the epoch date displayed above
 JV7186.which is a decimal equivalence of Year/Month/Day.
 JV7186
 JV7186.The orthometric height was determined by GPS observations and a
 JV7186.high-resolution geoid model.
 JV7186
 JV7186.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7186.GEOID18 height accuracy estimate available here.
 JV7186
 JV7186.Click photographs - Photos may exist for this station.
 JV7186
 JV7186.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7186
 JV7186.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7186
 JV7186.The ellipsoidal height was determined by GPS observations
 JV7186.and is referenced to NAD 83.
 JV7186
 JV7186. The following values were computed from the NAD 83(2011) position.
 JV7186
 JV7186;                    North         East     Units Scale Factor Converg.
 JV7186;SPC MD       -   182,480.852   356,611.262   MT  0.99997844   -0 18 56.7
 JV7186;SPC MD       -   598,689.26  1,169,982.12   sFT  0.99997844   -0 18 56.7
 JV7186;SPC VA N     - 2,182,824.221 3,585,981.925   MT  1.00002126   +0 37 19.9
 JV7186;SPC VA N     - 7,161,482.47 11,765,009.03   sFT  1.00002126   +0 37 19.9
 JV7186;UTM  18      - 4,354,106.688   284,187.192   MT  1.00017350   -1 35 10.8
 JV7186
 JV7186!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7186!SPC MD       -   0.99998980  x   0.99997844  =   0.99996824
 JV7186!SPC VA N     -   0.99998980  x   1.00002126  =   1.00001106
 JV7186!UTM  18      -   0.99998980  x   1.00017350  =   1.00016330
 JV7186
 JV7186_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8418754106(NAD 83)
 JV7186
 JV7186                          SUPERSEDED SURVEY CONTROL
 JV7186
 JV7186  NAD 83(2007)-  39 18 34.07563(N)    077 30 11.10355(W) AD(2002.00) 0
 JV7186  ELLIP H (02/10/07)   65.022  (m)                       GP(2002.00)    
 JV7186  ELLIP H (08/30/02)   65.022  (m)                       GP(       ) 4 2
 JV7186  NAD 83(1991)-  39 18 34.07610(N)    077 30 11.10322(W) AD(       ) 1
 JV7186  ELLIP H (02/09/94)   64.956  (m)                       GP(       ) 4 1
 JV7186
 JV7186.Superseded values are not recommended for survey control.
 JV7186
 JV7186.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7186.See file dsdata.pdf to determine how the superseded data were derived.
 JV7186
 JV7186_MARKER: DD = SURVEY DISK
 JV7186_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7186_STAMPING: ADAM 1993
 JV7186_MARK LOGO: MD-021
 JV7186_PROJECTION: FLUSH
 JV7186_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7186_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7186+STABILITY: SURFACE MOTION
 JV7186_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7186+SATELLITE: SATELLITE OBSERVATIONS - May 20, 2016
 JV7186
 JV7186  HISTORY     - Date     Condition        Report By
 JV7186  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7186  HISTORY     - 20160520 GOOD             BASE9
 JV7186
 JV7186                          STATION DESCRIPTION
 JV7186
 JV7186'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7186'FROM FREDERICK, MD, GO WEST ON MD RTE 340-15. TAKE RTE 15 SOUTH AT THE
 JV7186'SPLIT. GO 3.7 MILES (6.0 KM) SOUTH TO BASFORD ROAD. TURN LEFT AND
 JV7186'PROCEED 0.7 MILES (1.1 KM) TO THE STATION ON THE LEFT. STATION IS
 JV7186'LOCATED 15 FEET (4.6 M) NORTHEAST OF THE CENTERLINE OF BASFORD ROAD,
 JV7186'17 FEET (5.2 M) SOUTHEAST OF C AND P POLE 17, AND 15 NORTHWEST OF THE
 JV7186'CENTERLINE OF A DIRT DRIVEWAY. STATION IS A BRASS DISK SET IN THE TOP
 JV7186'OF AN 8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7186
 JV7186                          STATION RECOVERY (2016)
 JV7186
 JV7186'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 JV7186'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5953 ***********************************************************************
 HV5953  DESIGNATION -  ADAM 1901
 HV5953  PID         -  HV5953
 HV5953  STATE/COUNTY-  MD/DORCHESTER
 HV5953  COUNTRY     -  US
 HV5953  USGS QUAD   -  CHURCH CREEK (2016)
 HV5953
 HV5953                         *CURRENT SURVEY CONTROL
 HV5953  ______________________________________________________________________
 HV5953* NAD 83(1991) POSITION- 38 33 25.85750(N) 076 11 11.67761(W)   ADJUSTED
 HV5953* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5953  ______________________________________________________________________
 HV5953  GEOID HEIGHT    -        -34.831 (meters)                     GEOID18
 HV5953  LAPLACE CORR    -         -4.78  (seconds)                    DEFLEC18
 HV5953  HORZ ORDER      -  THIRD
 HV5953
 HV5953.The horizontal coordinates were established by classical geodetic methods
 HV5953.and adjusted by the National Geodetic Survey in January 1992.
 HV5953
 HV5953.The orthometric height was scaled from a topographic map.
 HV5953
 HV5953.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5953.GEOID18 height accuracy estimate available here.
 HV5953
 HV5953.Click photographs - Photos may exist for this station.
 HV5953
 HV5953.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5953
 HV5953. The following values were computed from the NAD 83(1991) position.
 HV5953
 HV5953;                    North         East     Units Scale Factor Converg.
 HV5953;SPC MD       -    99,166.635   470,897.590   MT  0.99996522   +0 30 37.9
 HV5953;SPC MD       -   325,349.20  1,544,936.51   sFT  0.99996522   +0 30 37.9
 HV5953;UTM  18      - 4,268,305.857   396,613.186   MT  0.99973163   -0 44 22.8
 HV5953
 HV5953!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5953!SPC MD       -   1.00000550  x   0.99996522  =   0.99997072
 HV5953!UTM  18      -   1.00000550  x   0.99973163  =   0.99973713
 HV5953
 HV5953:                Primary Azimuth Mark                     Grid Az
 HV5953:SPC MD       -  SETH 1901                                020 33 29.9
 HV5953:UTM  18      -  SETH 1901                                021 48 30.6
 HV5953
 HV5953_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9661368305(NAD 83)
 HV5953
 HV5953|---------------------------------------------------------------------|
 HV5953| PID    Reference Object                     Distance      Geod. Az  |
 HV5953|                                                           dddmmss.s |
 HV5953| HV5908 SETH 1901                           475.409 METERS 0210407.8 |
 HV5953|---------------------------------------------------------------------|
 HV5953
 HV5953                          SUPERSEDED SURVEY CONTROL
 HV5953
 HV5953  NAD 83(1986)-  38 33 25.85492(N)    076 11 11.69324(W) AD(       ) 3
 HV5953  NAD 27      -  38 33 25.45100(N)    076 11 12.87900(W) AD(       ) 3
 HV5953  USSD        -  38 33 25.85900(N)    076 11 12.69500(W) AD(       ) 3
 HV5953
 HV5953.Superseded values are not recommended for survey control.
 HV5953
 HV5953.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5953.See file dsdata.pdf to determine how the superseded data were derived.
 HV5953
 HV5953
 HV5953  HISTORY     - Date     Condition        Report By
 HV5953  HISTORY     - 1901     MONUMENTED       CGS
 HV5953  HISTORY     - 1910     GOOD             CGS
 HV5953
 HV5953                          STATION DESCRIPTION
 HV5953
 HV5953'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV5953'ON THE SOUTHEASTERN SHORE OF THE UPPER PART OF LITTLE CHOPTANK
 HV5953'RIVER, ABOUT 1/8 MILE W OF ENTRANCE TO SMITHS COVE, ON MARSH POINT
 HV5953'ABOUT LEVEL WITH HIGH WATER, 3 YARDS S OF SHORE, 3 YARDS SW OF
 HV5953'SHORE, AND 6 YARDS E OF SHORE.  STATION MARK IS NAIL IN CEDAR STUB
 HV5953'PROJECTING 5 INCHES ABOVE SURFACE OF GROUND.  REFERENCE MARK IS
 HV5953'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5953'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5953'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV5953'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT IS 27.50 METERS
 HV5953'(90.2 FEET) FROM STATION S 33 DEG 31 MIN E. OTHER DISTANCES AND
 HV5953'BEARINGS ARE AS FOLLOWS--NEAR PEAK OF BARN, 1/4 MILE, S 45 DEG 40
 HV5953'MIN W.  NEAR CHIMNEY OF HOUSE, 1/4 MILE, S 52 DEG 20 MIN W.  NEAR
 HV5953'PEAK OF BARN, 2 MILES, S 85 DEG 9 MIN W.  CHIMNEY ON 1 1/2-STORY
 HV5953'HOUSE, 1-1/8 MILES, N 22 DEG 14 MIN E.  CHIMNEY ON RIGHT END OF
 HV5953'HOUSE, 1-1/2 MILES, N 32 DEG 54 MIN E.  NEAR PEAK OF LARGE HOUSE,
 HV5953'1 MILE, N 40 DEG 54 MIN E.  CHIMNEY ON NEAR END OF SMALL HOUSE, 1
 HV5953'MILE, N 63 DEG 40 MIN E.  NEAR PEAK OF BARN, 1 MILE, N 68 DEG 11
 HV5953'MIN E. NEAR PEAK OF BARN, 1 MILE, N 71 DEG 2 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7111 ***********************************************************************
 HV7111  DESIGNATION -  ADDISON
 HV7111  PID         -  HV7111
 HV7111  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7111  COUNTRY     -  US
 HV7111  USGS QUAD   -  SOUTH RIVER (2016)
 HV7111
 HV7111                         *CURRENT SURVEY CONTROL
 HV7111  ______________________________________________________________________
 HV7111* NAD 83(1991) POSITION- 38 57 29.00148(N) 076 34 25.70645(W)   ADJUSTED
 HV7111* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV7111  ______________________________________________________________________
 HV7111  GEOID HEIGHT    -        -33.187 (meters)                     GEOID18
 HV7111  LAPLACE CORR    -         -4.93  (seconds)                    DEFLEC18
 HV7111  HORZ ORDER      -  THIRD
 HV7111
 HV7111.The horizontal coordinates were established by classical geodetic methods
 HV7111.and adjusted by the National Geodetic Survey in January 1992.
 HV7111
 HV7111.The orthometric height was scaled from a topographic map.
 HV7111
 HV7111.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7111.GEOID18 height accuracy estimate available here.
 HV7111
 HV7111.Click photographs - Photos may exist for this station.
 HV7111
 HV7111.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7111
 HV7111. The following values were computed from the NAD 83(1991) position.
 HV7111
 HV7111;                    North         East     Units Scale Factor Converg.
 HV7111;SPC MD       -   143,436.242   436,939.376   MT  0.99995087   +0 16 03.0
 HV7111;SPC MD       -   470,590.40  1,433,525.27   sFT  0.99995087   +0 16 03.0
 HV7111;UTM  18      - 4,313,299.725   363,637.209   MT  0.99982897   -0 59 22.9
 HV7111
 HV7111!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7111!SPC MD       -   1.00000493  x   0.99995087  =   0.99995580
 HV7111!UTM  18      -   1.00000493  x   0.99982897  =   0.99983390
 HV7111
 HV7111:                Primary Azimuth Mark                     Grid Az
 HV7111:SPC MD       -  BOYD                                     125 49 11.4
 HV7111:UTM  18      -  BOYD                                     127 04 37.3
 HV7111
 HV7111_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6363713299(NAD 83)
 HV7111
 HV7111|---------------------------------------------------------------------|
 HV7111| PID    Reference Object                     Distance      Geod. Az  |
 HV7111|                                                           dddmmss.s |
 HV7111| HV7171 BOYD                                APPROX. 0.7 KM 1260514.4 |
 HV7111| HV7141 VIEW                                APPROX. 0.5 KM 1645957.6 |
 HV7111| HV7140 BROAD                               347.132 METERS 29520     |
 HV7111| CX2030 ADDISON RM                           19.243 METERS 30922     |
 HV7111|---------------------------------------------------------------------|
 HV7111
 HV7111                          SUPERSEDED SURVEY CONTROL
 HV7111
 HV7111  NAD 83(1986)-  38 57 28.99817(N)    076 34 25.71748(W) AD(       ) 3
 HV7111  NAD 27      -  38 57 28.59800(N)    076 34 26.85300(W) AD(       ) 3
 HV7111
 HV7111.Superseded values are not recommended for survey control.
 HV7111
 HV7111.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7111.See file dsdata.pdf to determine how the superseded data were derived.
 HV7111
 HV7111_MARKER: DS = TRIANGULATION STATION DISK
 HV7111_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7111_STAMPING: ADDISON 1933
 HV7111_MARK LOGO: CGS
 HV7111_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7111+STABILITY: SURFACE MOTION
 HV7111
 HV7111  HISTORY     - Date     Condition        Report By
 HV7111  HISTORY     - 1933     MONUMENTED       CGS
 HV7111
 HV7111                          STATION DESCRIPTION
 HV7111
 HV7111'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7111'ON THE NE SIDE OF SOUTH RIVER ON THE FIRST POINT W OF THE FERRY
 HV7111'ROAD HIGHWAY BRIDGE AND ABOUT 150 YARDS W OF THE BRIDGE.  ON THE
 HV7111'POINT FORMED BY THE JUNCTION OF SOUTH RIVER AND BROAD CREEK.
 HV7111'STATION IS IN THE MARSH AT THE FOOT OF A BLUFF ON LAND BELONGING
 HV7111'TO CAPTAIN ADDISON.  IT IS 40 FEET N OF HIGH WATER, 50 FEET W OF
 HV7111'HIGH WATER AND 35 FEET E OF HIGH WATER.  ALSO 100 FEET S OF THE
 HV7111'BASE OF A WOODED BLUFF.
 HV7111'
 HV7111'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7111'CONCRETE AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9260 ***********************************************************************
 HV9260  CBN         -  This is a Cooperative Base Network Control Station.
 HV9260  DESIGNATION -  ADM HULL
 HV9260  PID         -  HV9260
 HV9260  STATE/COUNTY-  MD/MONTGOMERY
 HV9260  COUNTRY     -  US
 HV9260  USGS QUAD   -  WASHINGTON WEST (2016)
 HV9260
 HV9260                         *CURRENT SURVEY CONTROL
 HV9260  ______________________________________________________________________
 HV9260* NAD 83(2011) POSITION- 38 59 35.22102(N) 077 01 52.29302(W)   ADJUSTED
 HV9260* NAD 83(2011) ELLIP HT-   131.197 (meters)        (06/27/12)   ADJUSTED
 HV9260* NAD 83(2011) EPOCH   -  2010.00
 HV9260* NAVD 88 ORTHO HEIGHT -   163.2   (meters)      535.    (feet) GPS OBS
 HV9260  ______________________________________________________________________
 HV9260  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9260  GEOID HEIGHT    -        -32.330 (meters)                     GEOID93
 HV9260  GEOID HEIGHT    -        -31.966 (meters)                     GEOID18
 HV9260  NAD 83(2011) X  -  1,114,003.508 (meters)                     COMP
 HV9260  NAD 83(2011) Y  - -4,837,292.649 (meters)                     COMP
 HV9260  NAD 83(2011) Z  -  3,991,805.710 (meters)                     COMP
 HV9260  LAPLACE CORR    -         -2.73  (seconds)                    DEFLEC18
 HV9260
 HV9260  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9260  Standards:
 HV9260         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9260            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9260  -------------------------------------------------------------------
 HV9260  NETWORK    0.76   2.86           0.34   0.27   1.46     -0.00451432
 HV9260  -------------------------------------------------------------------
 HV9260  Click here for local accuracies and other accuracy information.
 HV9260
 HV9260.The horizontal coordinates were established by GPS observations
 HV9260.and adjusted by the National Geodetic Survey in June 2012.
 HV9260
 HV9260.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9260.been affixed to the stable North American tectonic plate. See 
 HV9260.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9260
 HV9260.The horizontal coordinates are valid at the epoch date displayed above
 HV9260.which is a decimal equivalence of Year/Month/Day.
 HV9260
 HV9260.The orthometric height was determined by GPS observations and a
 HV9260.high-resolution geoid model.
 HV9260
 HV9260.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9260.GEOID18 height accuracy estimate available here.
 HV9260
 HV9260.Click photographs - Photos may exist for this station.
 HV9260
 HV9260.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9260
 HV9260.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9260
 HV9260.The ellipsoidal height was determined by GPS observations
 HV9260.and is referenced to NAD 83.
 HV9260
 HV9260. The following values were computed from the NAD 83(2011) position.
 HV9260
 HV9260;                    North         East     Units Scale Factor Converg.
 HV9260;SPC MD       -   147,242.582   397,297.774   MT  0.99995194   -0 01 10.5
 HV9260;SPC MD       -   483,078.37  1,303,467.78   sFT  0.99995194   -0 01 10.5
 HV9260;SPC VA N     - 2,148,255.043 3,627,240.570   MT  0.99996983   +0 55 00.2
 HV9260;SPC VA N     - 7,048,066.75 11,900,371.77   sFT  0.99996983   +0 55 00.2
 HV9260;UTM  18      - 4,317,975.202   324,090.686   MT  0.99998104   -1 16 42.3
 HV9260
 HV9260!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9260!SPC MD       -   0.99997942  x   0.99995194  =   0.99993136
 HV9260!SPC VA N     -   0.99997942  x   0.99996983  =   0.99994925
 HV9260!UTM  18      -   0.99997942  x   0.99998104  =   0.99996046
 HV9260
 HV9260_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2409017975(NAD 83)
 HV9260
 HV9260                          SUPERSEDED SURVEY CONTROL
 HV9260
 HV9260  NAD 83(2007)-  38 59 35.22128(N)    077 01 52.29375(W) AD(2002.00) 0
 HV9260  ELLIP H (02/10/07)  131.221  (m)                       GP(2002.00)    
 HV9260  ELLIP H (08/09/02)  131.198  (m)                       GP(       ) 4 2
 HV9260  NAD 83(1991)-  38 59 35.22129(N)    077 01 52.29361(W) AD(       ) B
 HV9260  ELLIP H (06/29/94)  131.189  (m)                       GP(       ) 4 1
 HV9260  NAD 83(1991)-  38 59 35.22130(N)    077 01 52.29360(W) AD(       ) B
 HV9260  ELLIP H (04/04/94)  131.189  (m)                       GP(       ) 4 1
 HV9260  NAD 83(1991)-  38 59 35.22091(N)    077 01 52.29325(W) AD(       ) 1
 HV9260  ELLIP H (12/31/92)  131.148  (m)                       GP(       ) 4 2
 HV9260  NAVD 88 (12/31/92)  163.2    (m)  GEOID90  model used  GPS OBS        
 HV9260
 HV9260.Superseded values are not recommended for survey control.
 HV9260
 HV9260.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9260.See file dsdata.pdf to determine how the superseded data were derived.
 HV9260
 HV9260_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION
 HV9260_SETTING: 0 = UNSPECIFIED SETTING
 HV9260_MARK LOGO: NGS
 HV9260_MAGNETIC: P = MARKER IS A STEEL PIPE
 HV9260_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV9260_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV9260+SATELLITE: SATELLITE OBSERVATIONS - March 22, 2009
 HV9260
 HV9260  HISTORY     - Date     Condition        Report By
 HV9260  HISTORY     - 1990     MONUMENTED       NGS
 HV9260  HISTORY     - 1990     GOOD             NGS
 HV9260  HISTORY     - 19920507 GOOD
 HV9260  HISTORY     - 19930720 GOOD             NGS
 HV9260  HISTORY     - 20090322 GOOD             GEOCAC
 HV9260
 HV9260                          STATION DESCRIPTION
 HV9260
 HV9260'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990 (HGB)
 HV9260'STATION IS LOCATED ABOUT 0.3 KM (0.2 MI) EAST OF THE NORTH CORNER OF
 HV9260'WASHINGTON, DC, ON TOP OF BUILDING 2 OF THE NOAA SILVER SPRINGS METRO
 HV9260'CENTER (SSMC2), 1325 EAST-WEST HIGHWAY IN SILVER SPRINGS.  THE
 HV9260'BUILDING IS OWNED BY THE US GOVERNMENT (GSA) AND USED BY NOAA.
 HV9260'
 HV9260'TO REACH FROM THE JUNCTION OF STATE HIGHWAY 410 (EAST-WEST HIGHWAY)
 HV9260'AND US HIGHWAY 29 (COLESVILLE ROAD) IN SILVER SPRINGS, GO WEST ON
 HV9260'EAST-WEST HIGHWAY FOR ABOUT 1/2 BLOCK TO 1325 EAST-WEST HIGHWAY AND
 HV9260'AND SSMC2 IN THE LEFT.  ENTER LOBBY TO CLEAR SECURITY.  TAKE ELEVATOR
 HV9260'TO THE EIGHTEENTH FLOOR, THEN TAKE SECURED STAIRWAY TO THE ROOF OF
 HV9260'THE BUILDING.  TURN RIGHT ON WALKWAY AROUND BUILDING TO A GALVANIZED
 HV9260'STEEL STAIRWAY LEADING TO THE TOP OF A POWER PLANT ON TOP OF THE
 HV9260'BUILDING.  TAKE STAIRWAY TO TOP,  THEN TURN SHARP RIGHT TO THE
 HV9260'NORTHWEST EDGE OF THE RAISED STEEL GRATING AND THE THREE-FOOT HIGH
 HV9260'RAIL AROUND THE EDGE OF THE GRATING.
 HV9260'
 HV9260'STATION IS IN THE TOP OF A 10-CM 1.5 M-LONG ALUMINUM PIPE ATTACHED TO
 HV9260'THE CONCRET PEDESTAL SUPPORTING THE RAISED GRATING.  STATION PROJECTS
 HV9260'ABOUT 10-CM ABOVE THE RAIL.
 HV9260'
 HV9260'NOTE--KEY TO THE ROOF MAY BE OBTAINED FROM NOAA FACILITIES AT WORK
 HV9260'STATION 5360, PHONE 301-427-2227.
 HV9260'
 HV9260'NOTE--A SPECIAL ATTACHMENT THAT ATTACHES TO THE PIPE IS NECESSARY TO
 HV9260'OCCUPY THIS STATION.  THIS ATTACHMENT ALSO CENTERS OVER THE PIPE.
 HV9260'TO OBTAIN THE ATTACHMENT, CONTACT FIELD OPERATIONS BRANCH,
 HV9260'PHONE 301-443-8141.
 HV9260
 HV9260                          STATION RECOVERY (1990)
 HV9260
 HV9260'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV9260'THE STATION IS LOCATED ABOUT 0.4 KM (0.25 MI) EAST OF THE NORTH CORNER
 HV9260'OF WASHINGTON, D.C., ON TOP OF BUILDING NUMBER 2 OF THE NOAA SILVER
 HV9260'SPRING METRO CENTER (SSMC), AT 1325 EAST-WEST HIGHWAY, SILVER SPRING,
 HV9260'MD.  OWNERSHIP--U.S. GOVERNMENT (GSA) AND LEASED TO NOAA, CONTACT THE
 HV9260'FIELD OPERATIONS BRANCH OF THE NATIONAL GEODETIC SURVEY (NGS) IN
 HV9260'ROCKVILLE, MD, TELEPHONE NUMBER 301-443-8141.  NOTE--SOMETIME IN THE
 HV9260'FUTURE (SEPTEMBER 1993) NGS WILL BE MOVING TO SILVER SPRING.
 HV9260'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 410 (EAST-WEST
 HV9260'HIGHWAY) AND U.S. HIGHWAY 29 (COLESVILLE ROAD) IN SILVER SPRING, GO
 HV9260'EAST ON EAST-WEST HIGHWAY FOR ABOUT 1/2 BLOCK TO 1325 EAST-WEST
 HV9260'HIGHWAY AND SSMC ON THE LEFT.  ENTER THE LOBBY TO CLEAR SECURITY,
 HV9260'TAKE THE ELEVATOR TO THE EIGHTEENTH FLOOR, THEN TAKE SECURED STAIRWAY
 HV9260'TO THE ROOF OF THE BUILDING.  TURN RIGHT ON A WALKWAY AROUND THE TOP
 HV9260'OF THE BUILDING TO A GALVANIZED STEEL STAIRWAY LEADING TO THE TOP OF
 HV9260'A POWER PLANT ON TOP OF THE BUILDING.  TAKE STAIRWAY TO THE TOP, THEN
 HV9260'TURN SHARP RIGHT TO THE NORTHWEST EDGE OF A RAISED STEEL GRATING AND
 HV9260'A 3-FOOT HIGH RAIL AROUND THE EDGE OF THE GRATING.
 HV9260'THE STATION IS THE TOP CENTER OF A 10-CM, 1.5-METER LONG ALUMINUM PIPE
 HV9260'ATTACHED TO THE CONCRETE PEDESTAL SUPPORTING THE RAISED GRATING.  THE
 HV9260'STATION PROJECTS ABOUT 10-CM ABOVE THE RAIL.
 HV9260'NOTE--A KEY TO THE ROOF CAN BE OBTAINED FRON THE NOAA FACILITIES AT
 HV9260'WORK STATION 5360 ON THE FIFTH FLOOR.  TELEPHONE NUMBER 301-427-2227.
 HV9260'NOTE-- A SPECIAL ATTACHMENT WHICH ATTACHES TO THE PIPE IS NECESSARY TO
 HV9260'ACCUPY THE STATION.  THIS ATTACHMENT ALSO CENTERS OVER THE PIPE.  TO
 HV9260'OBTAIN THE ATTACHMENT CONTACT FIELD OPERATIONS BRACH, NGS, IN
 HV9260'ROCKVILLE, MD, TELEPHONE NUMBER 301-443-8141.
 HV9260
 HV9260                          STATION RECOVERY (1992)
 HV9260
 HV9260'RECOVERED 1992
 HV9260'RECOVERED IN GOOD CONDITION.
 HV9260
 HV9260                          STATION RECOVERY (1993)
 HV9260
 HV9260'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1993
 HV9260'THE STATION IS LOCATED ABOUT 0.4 KM (0.25 MI) EAST OF THE NORTH CORNER
 HV9260'OF WASHINGTON, D.C., ON TOP OF BUILDING NUMBER 2 OF THE NOAA SILVER
 HV9260'SPRING METRO CENTER (SSMC), AT 1325 EAST-WEST HIGHWAY, SILVER SPRING,
 HV9260'MD.  OWNERSHIP--U.S. GOVERNMENT (GSA) AND LEASED TO NOAA, CONTACT THE
 HV9260'FIELD OPERATIONS BRANCH OF THE NATIONAL GEODETIC SURVEY (NGS) IN
 HV9260'SILVER SPRING, MD, TELEPHONE NUMBER (301) 713-2227.
 HV9260'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 410 (EAST-WEST
 HV9260'HIGHWAY) AND U.S. HIGHWAY 29 (COLESVILLE ROAD) IN SILVER SPRING, GO
 HV9260'EAST ON EAST-WEST HIGHWAY FOR ABOUT 1/2 BLOCK TO 1325 EAST-WEST
 HV9260'HIGHWAY AND SSMC ON THE LEFT.  ENTER THE LOBBY TO CLEAR SECURITY,
 HV9260'TAKE THE ELEVATOR TO THE EIGHTEENTH FLOOR, THEN TAKE SECURED STAIRWAY
 HV9260'TO THE ROOF OF THE BUILDING.  TURN RIGHT ON A WALKWAY AROUND THE TOP
 HV9260'OF THE BUILDING TO A GALVANIZED STEEL STAIRWAY LEADING TO THE TOP OF
 HV9260'A POWER PLANT ON TOP OF THE BUILDING.  TAKE STAIRWAY TO THE TOP, THEN
 HV9260'TURN SHARP RIGHT TO THE NORTHWEST EDGE OF A RAISED STEEL GRATING AND
 HV9260'A 3-FOOT HIGH RAIL AROUND THE EDGE OF THE GRATING.
 HV9260'THE STATION IS THE TOP CENTER OF A 10-CM, 1.5-METER LONG ALUMINUM PIPE
 HV9260'ATTACHED TO THE CONCRETE PEDESTAL SUPPORTING THE RAISED GRATING.  THE
 HV9260'STATION PROJECTS ABOUT 10-CM ABOVE THE RAIL.
 HV9260'NOTE--A KEY TO THE ROOF CAN BE OBTAINED FRON THE NOAA FACILITIES AT
 HV9260'WORK STATION 5360 ON THE FIFTH FLOOR.  TELEPHONE NUMBER 301-713-2227.
 HV9260'NOTE-- A SPECIAL ATTACHMENT WHICH ATTACHES TO THE PIPE IS NECESSARY TO
 HV9260'ACCUPY THE STATION.  THIS ATTACHMENT ALSO CENTERS OVER THE PIPE. TO
 HV9260'OBTAIN THE ATTACHMENT CONTACT FIELD OPERATIONS BRANCH, NGS, IN SILVER
 HV9260'SPRING, MD, TELEPHONE NUMBER 301-713-3215.
 HV9260
 HV9260                          STATION RECOVERY (2009)
 HV9260
 HV9260'RECOVERY NOTE BY GEOCACHING 2009 (LPC)
 HV9260'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6706 ***********************************************************************
 JV6706  DESIGNATION -  ADY
 JV6706  PID         -  JV6706
 JV6706  STATE/COUNTY-  MD/HARFORD
 JV6706  COUNTRY     -  US
 JV6706  USGS QUAD   -  BEL AIR (2016)
 JV6706
 JV6706                         *CURRENT SURVEY CONTROL
 JV6706  ______________________________________________________________________
 JV6706* NAD 83(2011) POSITION- 39 37 08.40997(N) 076 19 52.25904(W)   ADJUSTED
 JV6706* NAD 83(2011) ELLIP HT-    30.868 (meters)        (06/27/12)   ADJUSTED
 JV6706* NAD 83(2011) EPOCH   -  2010.00
 JV6706* NAVD 88 ORTHO HEIGHT -    63.6   (meters)      209.    (feet) VERTCON3
 JV6706  ______________________________________________________________________
 JV6706  GEOID HEIGHT    -        -32.733 (meters)                     GEOID18
 JV6706  NAD 83(2011) X  -  1,162,598.265 (meters)                     COMP
 JV6706  NAD 83(2011) Y  - -4,780,475.339 (meters)                     COMP
 JV6706  NAD 83(2011) Z  -  4,045,509.499 (meters)                     COMP
 JV6706  LAPLACE CORR    -         -2.18  (seconds)                    DEFLEC18
 JV6706
 JV6706  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6706  Standards:
 JV6706         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6706            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6706  -------------------------------------------------------------------
 JV6706  NETWORK    2.21   5.61           1.00   0.70   2.86      0.45660960
 JV6706  -------------------------------------------------------------------
 JV6706  Click here for local accuracies and other accuracy information.
 JV6706
 JV6706.The horizontal coordinates were established by GPS observations
 JV6706.and adjusted by the National Geodetic Survey in June 2012.
 JV6706
 JV6706.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6706.been affixed to the stable North American tectonic plate. See 
 JV6706.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6706
 JV6706.The horizontal coordinates are valid at the epoch date displayed above
 JV6706.which is a decimal equivalence of Year/Month/Day.
 JV6706
 JV6706.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6706.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6706
 JV6706.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6706.GEOID18 height accuracy estimate available here.
 JV6706
 JV6706.Click photographs - Photos may exist for this station.
 JV6706
 JV6706.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6706
 JV6706.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6706
 JV6706.The ellipsoidal height was determined by GPS observations
 JV6706.and is referenced to NAD 83.
 JV6706
 JV6706. The following values were computed from the NAD 83(2011) position.
 JV6706
 JV6706;                    North         East     Units Scale Factor Converg.
 JV6706;SPC MD       -   216,937.993   457,430.441   MT  1.00003394   +0 25 11.2
 JV6706;SPC MD       -   711,737.40  1,500,753.04   sFT  1.00003394   +0 25 11.2
 JV6706;UTM  18      - 4,386,318.144   385,739.675   MT  0.99976073   -0 50 56.3
 JV6706
 JV6706!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6706!SPC MD       -   0.99999516  x   1.00003394  =   1.00002910
 JV6706!UTM  18      -   0.99999516  x   0.99976073  =   0.99975589
 JV6706
 JV6706:                Primary Azimuth Mark                     Grid Az
 JV6706:SPC MD       -  ADY AZ MK                                016 50 51.9
 JV6706:UTM  18      -  ADY AZ MK                                018 06 59.4
 JV6706
 JV6706_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8573986318(NAD 83)
 JV6706
 JV6706|---------------------------------------------------------------------|
 JV6706| PID    Reference Object                     Distance      Geod. Az  |
 JV6706|                                                           dddmmss.s |
 JV6706| JV6707 ADY AZ MK                           APPROX. 0.6 KM 0171603.1 |
 JV6706|---------------------------------------------------------------------|
 JV6706
 JV6706                          SUPERSEDED SURVEY CONTROL
 JV6706
 JV6706  NAD 83(2007)-  39 37 08.41017(N)    076 19 52.25978(W) AD(2002.00) 0
 JV6706  ELLIP H (02/10/07)   30.890  (m)                       GP(2002.00)    
 JV6706  ELLIP H (09/18/02)   30.899  (m)                       GP(       ) 4 2
 JV6706  NAD 83(1991)-  39 37 08.41001(N)    076 19 52.25947(W) AD(       ) 1
 JV6706  ELLIP H (01/27/92)   30.896  (m)                       GP(       ) 4 1
 JV6706  NAD 83(1986)-  39 37 08.40304(N)    076 19 52.26608(W) AD(       ) 1
 JV6706  NGVD 29 (06/18/91)   63.9    (m)  UNKNOWN  model used  GPS OBS        
 JV6706
 JV6706.Superseded values are not recommended for survey control.
 JV6706
 JV6706.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6706.See file dsdata.pdf to determine how the superseded data were derived.
 JV6706
 JV6706_MARKER: DD = SURVEY DISK
 JV6706_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6706_STAMPING: 85 ADY 1989
 JV6706_MARK LOGO: MD-025
 JV6706_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6706_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6706+STABILITY: SURFACE MOTION
 JV6706_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6706+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6706
 JV6706  HISTORY     - Date     Condition        Report By
 JV6706  HISTORY     - 1989     MONUMENTED       RDA
 JV6706  HISTORY     - 19980711 GOOD             USPSQD
 JV6706
 JV6706                          STATION DESCRIPTION
 JV6706
 JV6706'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6706'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND
 JV6706'ABOUT3 MILES NORTH NORTHEAST OF THE VILLAGE OF HICKORY.
 JV6706'TO REACH THE STATION FROM THE INTERSECTION OF FEDERAL HIGHWAY 1 AND
 JV6706'STATE HIGHWAY 543 IN THE VILLAGE OF HICKORY PROCEED NORTH ALONG
 JV6706'HIGHWAY 543 3.0 MILES TO ITS INTERSECTION WITH WALTERS MILL ROAD. TURN
 JV6706'LEFT AND PROCEED NORTHWEST ALONG WALTERS MILL ROAD APPROXIMATELY 150
 JV6706'FEET TO THE STATION ON THE LEFT.
 JV6706'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6706'ABOUT 1 INCH BELOW GROUND STAMPED 85 ADY 1989.  THE STATION IS 18.0
 JV6706'FEET SOUTHWEST OF THE CENTERLINE OF WALTERS MILL ROAD, 8.0 FEET NORTH
 JV6706'OF THE CENTERLINE OF A GRAVEL DRIVEWAY, AND 69.5 FEET WEST OF C AND P
 JV6706'POWER POLE NUMBER 158.
 JV6706
 JV6706                          STATION RECOVERY (1998)
 JV6706
 JV6706'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6706'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6707 ***********************************************************************
 JV6707  DESIGNATION -  ADY AZ MK
 JV6707  PID         -  JV6707
 JV6707  STATE/COUNTY-  MD/HARFORD
 JV6707  COUNTRY     -  US
 JV6707  USGS QUAD   -  BEL AIR (2016)
 JV6707
 JV6707                         *CURRENT SURVEY CONTROL
 JV6707  ______________________________________________________________________
 JV6707* NAD 83(2011) POSITION- 39 37 26.90503(N) 076 19 44.82479(W)   ADJUSTED
 JV6707* NAD 83(2011) ELLIP HT-    48.249 (meters)        (06/27/12)   ADJUSTED
 JV6707* NAD 83(2011) EPOCH   -  2010.00
 JV6707* NAVD 88 ORTHO HEIGHT -    81.0   (meters)      266.    (feet) VERTCON3
 JV6707  ______________________________________________________________________
 JV6707  GEOID HEIGHT    -        -32.735 (meters)                     GEOID18
 JV6707  NAD 83(2011) X  -  1,162,687.756 (meters)                     COMP
 JV6707  NAD 83(2011) Y  - -4,780,092.990 (meters)                     COMP
 JV6707  NAD 83(2011) Z  -  4,045,959.953 (meters)                     COMP
 JV6707  LAPLACE CORR    -         -2.21  (seconds)                    DEFLEC18
 JV6707
 JV6707  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6707  Standards:
 JV6707         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6707            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6707  -------------------------------------------------------------------
 JV6707  NETWORK    2.22   5.57           1.02   0.68   2.84      0.45157784
 JV6707  -------------------------------------------------------------------
 JV6707  Click here for local accuracies and other accuracy information.
 JV6707
 JV6707.The horizontal coordinates were established by GPS observations
 JV6707.and adjusted by the National Geodetic Survey in June 2012.
 JV6707
 JV6707.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6707.been affixed to the stable North American tectonic plate. See 
 JV6707.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6707
 JV6707.The horizontal coordinates are valid at the epoch date displayed above
 JV6707.which is a decimal equivalence of Year/Month/Day.
 JV6707
 JV6707.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6707.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6707
 JV6707.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6707.GEOID18 height accuracy estimate available here.
 JV6707
 JV6707.Click photographs - Photos may exist for this station.
 JV6707
 JV6707.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6707
 JV6707.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6707
 JV6707.The ellipsoidal height was determined by GPS observations
 JV6707.and is referenced to NAD 83.
 JV6707
 JV6707. The following values were computed from the NAD 83(2011) position.
 JV6707
 JV6707;                    North         East     Units Scale Factor Converg.
 JV6707;SPC MD       -   217,509.704   457,603.570   MT  1.00003511   +0 25 15.8
 JV6707;SPC MD       -   713,613.09  1,501,321.05   sFT  1.00003511   +0 25 15.8
 JV6707;UTM  18      - 4,386,885.725   385,925.370   MT  0.99976021   -0 50 51.8
 JV6707
 JV6707!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6707!SPC MD       -   0.99999243  x   1.00003511  =   1.00002754
 JV6707!UTM  18      -   0.99999243  x   0.99976021  =   0.99975264
 JV6707
 JV6707:                Primary Azimuth Mark                     Grid Az
 JV6707:SPC MD       -  ADY                                      196 50 52.0
 JV6707:UTM  18      -  ADY                                      198 06 59.6
 JV6707
 JV6707_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8592586885(NAD 83)
 JV6707
 JV6707|---------------------------------------------------------------------|
 JV6707| PID    Reference Object                     Distance      Geod. Az  |
 JV6707|                                                           dddmmss.s |
 JV6707| JV6706 ADY                                 APPROX. 0.6 KM 1971607.8 |
 JV6707|---------------------------------------------------------------------|
 JV6707
 JV6707                          SUPERSEDED SURVEY CONTROL
 JV6707
 JV6707  NAD 83(2007)-  39 37 26.90524(N)    076 19 44.82553(W) AD(2002.00) 0
 JV6707  ELLIP H (02/10/07)   48.271  (m)                       GP(2002.00)    
 JV6707  ELLIP H (09/18/02)   48.280  (m)                       GP(       ) 4 2
 JV6707  NAD 83(1991)-  39 37 26.90505(N)    076 19 44.82522(W) AD(       ) 1
 JV6707  ELLIP H (01/27/92)   48.276  (m)                       GP(       ) 4 1
 JV6707  NAD 83(1986)-  39 37 26.89808(N)    076 19 44.83182(W) AD(       ) 1
 JV6707  NGVD 29 (06/18/91)   81.2    (m)  UNKNOWN  model used  GPS OBS        
 JV6707
 JV6707.Superseded values are not recommended for survey control.
 JV6707
 JV6707.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6707.See file dsdata.pdf to determine how the superseded data were derived.
 JV6707
 JV6707_MARKER: DZ = AZIMUTH MARK DISK
 JV6707_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6707_STAMPING: 85 ADY 1989
 JV6707_MARK LOGO: MD-025
 JV6707_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6707_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6707+STABILITY: SURFACE MOTION
 JV6707_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6707+SATELLITE: SATELLITE OBSERVATIONS - September 10, 2008
 JV6707
 JV6707  HISTORY     - Date     Condition        Report By
 JV6707  HISTORY     - 1989     MONUMENTED       RDA
 JV6707  HISTORY     - 19900103 GOOD
 JV6707  HISTORY     - 19980711 GOOD             USPSQD
 JV6707  HISTORY     - 20080910 GOOD             GPSSS
 JV6707
 JV6707                          STATION DESCRIPTION
 JV6707
 JV6707'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6707'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTH ALONG HIGHWAY
 JV6707'543 0.30 MILES TO THE MARK ON THE RIGHT.
 JV6707'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6707'ABOUT 1 INCH BELOW GROUND STAMPED 85 ADY 1989.  THE MARK IS 18.5 FEET
 JV6707'EAST OF THE CENTERLINE OF HIGHWAY 543, 69.0 FEET SOUTHWEST OF C AND P
 JV6707'OF MARYLAND POWER POLE NUMBER 19601, AND 7.0 FEET SOUTH OF C AND P OF
 JV6707'MARYLAND POWER POLE NUMBER 169 AND 1959.75 FEET FROM THE STATION.
 JV6707
 JV6707                          STATION RECOVERY (1990)
 JV6707
 JV6707'RECOVERED 1990
 JV6707'RECOVERED IN GOOD CONDITION.
 JV6707
 JV6707                          STATION RECOVERY (1998)
 JV6707
 JV6707'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6707'RECOVERED IN GOOD CONDITION.
 JV6707
 JV6707                          STATION RECOVERY (2008)
 JV6707
 JV6707'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (KH)
 JV6707'RECOVERED BY KEITH HEINDEL, PLS AND GARY GANJON, PLS OF PROFESSIONAL
 JV6707'SURVEYS, LLC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0809 ***********************************************************************
 HV0809  DESIGNATION -  AE 120
 HV0809  PID         -  HV0809
 HV0809  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0809  COUNTRY     -  US
 HV0809  USGS QUAD   -  UPPER MARLBORO (2016)
 HV0809
 HV0809                         *CURRENT SURVEY CONTROL
 HV0809  ______________________________________________________________________
 HV0809* NAD 83(1986) POSITION- 38 47 24.     (N) 076 47 09.     (W)   SCALED
 HV0809* NAVD 88 ORTHO HEIGHT -    48.483 (meters)      159.06  (feet) ADJUSTED
 HV0809  ______________________________________________________________________
 HV0809  GEOID HEIGHT    -        -32.864 (meters)                     GEOID18
 HV0809  DYNAMIC HEIGHT  -         48.456 (meters)      158.98  (feet) COMP
 HV0809  MODELED GRAVITY -    980,064.7   (mgal)                       NAVD 88
 HV0809
 HV0809  VERT ORDER      -  FIRST     CLASS II
 HV0809
 HV0809.The horizontal coordinates were scaled from a map and have
 HV0809.an estimated accuracy of +/- 6 seconds.
 HV0809
 HV0809.The orthometric height was determined by differential leveling and
 HV0809.adjusted by the NATIONAL GEODETIC SURVEY
 HV0809.in June 1991.
 HV0809
 HV0809.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0809.GEOID18 height accuracy estimate available here.
 HV0809
 HV0809.Click photographs - Photos may exist for this station.
 HV0809
 HV0809.The dynamic height is computed by dividing the NAVD 88
 HV0809.geopotential number by the normal gravity value computed on the
 HV0809.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0809.degrees latitude (g = 980.6199 gals.).
 HV0809
 HV0809.The modeled gravity was interpolated from observed gravity values.
 HV0809
 HV0809;                    North         East    Units  Estimated Accuracy
 HV0809;SPC MD       -   124,720.      418,610.      MT  (+/- 180 meters Scaled)
 HV0809
 HV0809_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH449949(NAD 83)
 HV0809
 HV0809                          SUPERSEDED SURVEY CONTROL
 HV0809
 HV0809  NGVD 29 (11/26/84)   48.714  (m)          159.82   (f) ADJUSTED    1 2
 HV0809
 HV0809.Superseded values are not recommended for survey control.
 HV0809
 HV0809.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0809.See file dsdata.pdf to determine how the superseded data were derived.
 HV0809
 HV0809_MARKER: DB = BENCH MARK DISK
 HV0809_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HV0809_SP_SET: WINGWALL
 HV0809_STAMPING: AE 120 1971
 HV0809_MARK LOGO: CGS
 HV0809_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0809
 HV0809  HISTORY     - Date     Condition        Report By
 HV0809  HISTORY     - 1971     MONUMENTED       NGS
 HV0809  HISTORY     - 1975     GOOD             NGS
 HV0809  HISTORY     - 20071116 GOOD             PB
 HV0809
 HV0809                          STATION DESCRIPTION
 HV0809
 HV0809'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0809'3.4 MI SW FROM UPPER MARLBORO.
 HV0809'ABOUT 3.35 MILES SOUTHWEST ALONG U.S. HIGHWAY 301 FROM THE
 HV0809'INTERSECTION OF STATE HIGHWAY 4 AT UPPER MARLBORO, AT A POINT
 HV0809'WHERE A HIGH TENSION POWER LINE CROSSES OVER THE HIGHWAY, SET ON
 HV0809'THE TOP OF THE NORTH END OF THE NORTH WING WALL FOR THE SOUTHEAST
 HV0809'HEAD WALL OF A 20 FOOT CULVERT UNDER A PAVED ROAD LEADING TO A
 HV0809'POWER SUB-STATION, ABOUT 200 FEET NORTHWEST OF THE CENTER LINE
 HV0809'OF U.S. HIGHWAY 301, 231 FEET NORTHEAST OF THE CENTER OF THE
 HV0809'GATE ACROSS THE BLACK TOP ROAD, 12 FEET SOUTHEAST OF THE CENTER
 HV0809'LINE OF THE BLACK TOP ROAD, ABOUT 0.25 MILE SOUTHWEST OF THE
 HV0809'JUNCTION OF CRAIN HIGHWAY, ABOUT 20 FEET BELOW THE LEVEL OF THE
 HV0809'HIGHWAY AND 2 FEET BELOW THE LEVEL OF THE ROAD.
 HV0809
 HV0809                          STATION RECOVERY (1975)
 HV0809
 HV0809'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0809'RECOVERED IN GOOD CONDITION.
 HV0809
 HV0809                          STATION RECOVERY (2007)
 HV0809
 HV0809'RECOVERY NOTE BY PBS&J 2007
 HV0809'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6673 ***********************************************************************
 HV6673  DESIGNATION -  AEDS COMPASS ROSE 1943
 HV6673  PID         -  HV6673
 HV6673  STATE/COUNTY-  MD/ST MARYS
 HV6673  COUNTRY     -  US
 HV6673  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6673
 HV6673                         *CURRENT SURVEY CONTROL
 HV6673  ______________________________________________________________________
 HV6673* NAD 83(1991) POSITION- 38 17 32.28893(N) 076 25 41.44998(W)   ADJUSTED
 HV6673* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6673  ______________________________________________________________________
 HV6673  GEOID HEIGHT    -        -34.530 (meters)                     GEOID18
 HV6673  LAPLACE CORR    -         -5.63  (seconds)                    DEFLEC18
 HV6673  HORZ ORDER      -  THIRD
 HV6673
 HV6673.The horizontal coordinates were established by classical geodetic methods
 HV6673.and adjusted by the National Geodetic Survey in January 1992.
 HV6673
 HV6673.The orthometric height was scaled from a topographic map.
 HV6673
 HV6673.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6673.GEOID18 height accuracy estimate available here.
 HV6673
 HV6673.Click photographs - Photos may exist for this station.
 HV6673
 HV6673.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6673
 HV6673. The following values were computed from the NAD 83(1991) position.
 HV6673
 HV6673;                    North         East     Units Scale Factor Converg.
 HV6673;SPC MD       -    69,605.086   450,024.043   MT  1.00000135   +0 21 32.0
 HV6673;SPC MD       -   228,362.69  1,476,453.88   sFT  1.00000135   +0 21 32.0
 HV6673;UTM  18      - 4,239,212.083   375,105.869   MT  0.99979210   -0 53 06.4
 HV6673
 HV6673!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6673!SPC MD       -   1.00000499  x   1.00000135  =   1.00000634
 HV6673!UTM  18      -   1.00000499  x   0.99979210  =   0.99979709
 HV6673
 HV6673:                Primary Azimuth Mark                     Grid Az
 HV6673:SPC MD       -  BEN RM                                   291 14 05.8
 HV6673:UTM  18      -  BEN RM                                   292 28 44.2
 HV6673
 HV6673_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7510539212(NAD 83)
 HV6673
 HV6673|---------------------------------------------------------------------|
 HV6673| PID    Reference Object                     Distance      Geod. Az  |
 HV6673|                                                           dddmmss.s |
 HV6673| HV6677 USN AIR STA WOODEN ELEV TANK        APPROX. 0.6 KM 0671400.5 |
 HV6673| HV6680 USN AIR STA CONT TWR NAB            APPROX. 0.6 KM 1234252.8 |
 HV6673| HV6728 BEN RM                              APPROX. 3.7 KM 2913537.8 |
 HV6673| HV6705 SOLOMONS IS WHARF LIGHTHOUSE        APPROX. 3.4 KM 3241526.4 |
 HV6673| HV6723 SOLOMONS IS ESSO SHORT TANK         APPROX. 3.8 KM 3260216.6 |
 HV6673| HV6729 SOLOMONS IS ESSO LARGE TANK         APPROX. 3.8 KM 3260642.3 |
 HV6673| HV6688 A T B BLACK STACK 4                 APPROX. 4.5 KM 3274427.3 |
 HV6673|---------------------------------------------------------------------|
 HV6673
 HV6673                          SUPERSEDED SURVEY CONTROL
 HV6673
 HV6673  NAD 83(1986)-  38 17 32.28942(N)    076 25 41.46581(W) AD(       ) 3
 HV6673  NAD 27      -  38 17 31.85200(N)    076 25 42.63100(W) AD(       ) 3
 HV6673
 HV6673.Superseded values are not recommended for survey control.
 HV6673
 HV6673.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6673.See file dsdata.pdf to determine how the superseded data were derived.
 HV6673
 HV6673_MARKER: DS = TRIANGULATION STATION DISK
 HV6673_SETTING: 0 = UNSPECIFIED SETTING
 HV6673_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6673
 HV6673  HISTORY     - Date     Condition        Report By
 HV6673  HISTORY     - 1943     MONUMENTED       CGS
 HV6673  HISTORY     - 1965     GOOD             USN
 HV6673
 HV6673                          STATION DESCRIPTION
 HV6673
 HV6673'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (BHR)
 HV6673'STATION IS LOCATED ON THE S SHORE OF THE PATUXENT RIVER ON THE
 HV6673'U.S. NAVAL AIR STATION, NE OF THE AVIATION EXPERIMENTAL DEPARTMENT
 HV6673'OF SCIENCE HANGAR, S OF THE SEAPLANE ANCHORAGE BASIN, IN THE NE
 HV6673'CORNER OF THE PARKING AREA FOR PLANES.  STATION IS IN THE CENTER
 HV6673'OF A 100-FOOT RADIUS COMPASS ROSE, MARKED BY BRONZE STATION DISK,
 HV6673'STAMPED AEDS COMPASS ROSE 1943.
 HV6673
 HV6673                          STATION RECOVERY (1965)
 HV6673
 HV6673'RECOVERY NOTE BY US NAVY 1965
 HV6673'STATION WAS RECOVERED AS DESCRIBED.  REFERENCE MARKS WERE NOT
 HV6673'SEARCHED FOR.
 HV6673'
 HV6673'PREVIOUS DESCRIPTION INADEQUATE, NEW DESCRIPTION FOLLOWS--TO
 HV6673'REACH FROM MAIN GATE PROCEED ALONG CEDAR POINT ROAD FOR
 HV6673'APPROXIMATELY 2-3/4 MILES.  TURN LEFT ON TAXIWAY, PROCEED TO
 HV6673'APRON.  TURN RIGHT ON CONCRETE APRON.  STATION IS IN APRON
 HV6673'APPROXIMATELY 100 FT W OF E EDGE AND 100 FT S OF N EDGE.  APRON
 HV6673'CONNECTS HANGARS 110 AND 111 WITH SEAPLANE BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0812 ***********************************************************************
 HV0812  DESIGNATION -  AF 120
 HV0812  PID         -  HV0812
 HV0812  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0812  COUNTRY     -  US
 HV0812  USGS QUAD   -  UPPER MARLBORO (2016)
 HV0812
 HV0812                         *CURRENT SURVEY CONTROL
 HV0812  ______________________________________________________________________
 HV0812* NAD 83(1986) POSITION- 38 46 41.     (N) 076 47 55.     (W)   SCALED
 HV0812* NAVD 88 ORTHO HEIGHT -    41.318 (meters)      135.56  (feet) ADJUSTED
 HV0812  ______________________________________________________________________
 HV0812  GEOID HEIGHT    -        -32.850 (meters)                     GEOID18
 HV0812  DYNAMIC HEIGHT  -         41.295 (meters)      135.48  (feet) COMP
 HV0812  MODELED GRAVITY -    980,062.5   (mgal)                       NAVD 88
 HV0812
 HV0812  VERT ORDER      -  FIRST     CLASS II
 HV0812
 HV0812.The horizontal coordinates were scaled from a map and have
 HV0812.an estimated accuracy of +/- 6 seconds.
 HV0812
 HV0812.The orthometric height was determined by differential leveling and
 HV0812.adjusted by the NATIONAL GEODETIC SURVEY
 HV0812.in June 1991.
 HV0812
 HV0812.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0812.GEOID18 height accuracy estimate available here.
 HV0812
 HV0812.Click photographs - Photos may exist for this station.
 HV0812
 HV0812.The dynamic height is computed by dividing the NAVD 88
 HV0812.geopotential number by the normal gravity value computed on the
 HV0812.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0812.degrees latitude (g = 980.6199 gals.).
 HV0812
 HV0812.The modeled gravity was interpolated from observed gravity values.
 HV0812
 HV0812;                    North         East    Units  Estimated Accuracy
 HV0812;SPC MD       -   123,390.      417,500.      MT  (+/- 180 meters Scaled)
 HV0812
 HV0812_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH437936(NAD 83)
 HV0812
 HV0812                          SUPERSEDED SURVEY CONTROL
 HV0812
 HV0812  NGVD 29 (11/26/84)   41.549  (m)          136.32   (f) ADJUSTED    1 2
 HV0812
 HV0812.Superseded values are not recommended for survey control.
 HV0812
 HV0812.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0812.See file dsdata.pdf to determine how the superseded data were derived.
 HV0812
 HV0812_MARKER: DB = BENCH MARK DISK
 HV0812_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0812_SP_SET: WALL
 HV0812_STAMPING: AF 120 1971
 HV0812_MARK LOGO: CGS
 HV0812_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0812+STABILITY: SURFACE MOTION
 HV0812
 HV0812  HISTORY     - Date     Condition        Report By
 HV0812  HISTORY     - 1971     MONUMENTED       NGS
 HV0812  HISTORY     - 1975     GOOD             NGS
 HV0812
 HV0812                          STATION DESCRIPTION
 HV0812
 HV0812'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0812'1.6 MI NE FROM ROSARYVILLE.
 HV0812'ABOUT 1.6 MILES NORTHEAST ALONG U.S. HIGHWAY 301 FROM THE
 HV0812'INTERSECTION OF ROSARYVILLE ROAD AT ROSARYVILLE, ABOUT 4.45 MILES
 HV0812'SOUTHWEST ALONG U.S. HIGHWAY 301 FROM THE INTERSECTION OF STATE
 HV0812'HIGHWAY 4 AT UPPER MARLBORO, SET VERTICALLY IN THE CENTER OF THE
 HV0812'SOUTHEAST END OF A CURVED BRICK WALL ON THE NORTH SIDE OF THE
 HV0812'ENTRANCE TO THE RESIDENTIAL DISTRICT MARLTON, 24 FEET NORTH OF
 HV0812'THE CENTER LINE OF THE NORTH LANE OF THE ENTRANCE DRIVE, 39 YARDS
 HV0812'SOUTHEAST OF THE CENTER LINE NORTHBOUND LANE OF THE HIGHWAY, 0.9
 HV0812'FOOT ABOVE THE LEVEL OF THE GROUND.
 HV0812
 HV0812                          STATION RECOVERY (1975)
 HV0812
 HV0812'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0812'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0813 ***********************************************************************
 HV0813  DESIGNATION -  AG 120
 HV0813  PID         -  HV0813
 HV0813  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0813  COUNTRY     -  US
 HV0813  USGS QUAD   -  UPPER MARLBORO (2016)
 HV0813
 HV0813                         *CURRENT SURVEY CONTROL
 HV0813  ______________________________________________________________________
 HV0813* NAD 83(1986) POSITION- 38 45 46.     (N) 076 48 21.     (W)   SCALED
 HV0813* NAVD 88 ORTHO HEIGHT -    66.184 (meters)      217.14  (feet) ADJUSTED
 HV0813  ______________________________________________________________________
 HV0813  GEOID HEIGHT    -        -32.861 (meters)                     GEOID18
 HV0813  DYNAMIC HEIGHT  -         66.147 (meters)      217.02  (feet) COMP
 HV0813  MODELED GRAVITY -    980,059.3   (mgal)                       NAVD 88
 HV0813
 HV0813  VERT ORDER      -  FIRST     CLASS II
 HV0813
 HV0813.The horizontal coordinates were scaled from a map and have
 HV0813.an estimated accuracy of +/- 6 seconds.
 HV0813
 HV0813.The orthometric height was determined by differential leveling and
 HV0813.adjusted by the NATIONAL GEODETIC SURVEY
 HV0813.in June 1991.
 HV0813
 HV0813.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0813.GEOID18 height accuracy estimate available here.
 HV0813
 HV0813.Click photographs - Photos may exist for this station.
 HV0813
 HV0813.The dynamic height is computed by dividing the NAVD 88
 HV0813.geopotential number by the normal gravity value computed on the
 HV0813.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0813.degrees latitude (g = 980.6199 gals.).
 HV0813
 HV0813.The modeled gravity was interpolated from observed gravity values.
 HV0813
 HV0813;                    North         East    Units  Estimated Accuracy
 HV0813;SPC MD       -   121,690.      416,880.      MT  (+/- 180 meters Scaled)
 HV0813
 HV0813_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH431920(NAD 83)
 HV0813
 HV0813                          SUPERSEDED SURVEY CONTROL
 HV0813
 HV0813  NGVD 29 (11/26/84)   66.418  (m)          217.91   (f) ADJUSTED    1 2
 HV0813
 HV0813.Superseded values are not recommended for survey control.
 HV0813
 HV0813.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0813.See file dsdata.pdf to determine how the superseded data were derived.
 HV0813
 HV0813_MARKER: DB = BENCH MARK DISK
 HV0813_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0813+WITH SETTING: INTO GROUND
 HV0813_STAMPING: AG 120 1971
 HV0813_MARK LOGO: CGS
 HV0813_PROJECTION: PROJECTING 3 CENTIMETERS
 HV0813_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0813+STABILITY: SURFACE MOTION
 HV0813
 HV0813  HISTORY     - Date     Condition        Report By
 HV0813  HISTORY     - 1971     MONUMENTED       NGS
 HV0813  HISTORY     - 1975     GOOD             NGS
 HV0813
 HV0813                          STATION DESCRIPTION
 HV0813
 HV0813'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0813'0.5 MI NE FROM ROSARYVILLE.
 HV0813'ABOUT 0.5 MILE NORTH ALONG U.S. HIGHWAY 301 FROM THE
 HV0813'INTERSECTION OF ROSARYVILLE ROAD AT ROSARYVLLE, 330 FEET SOUTH OF
 HV0813'THE CENTER LINE OF TRUMPS HILL ROAD LEADING NORTHERLY, 102 FEET
 HV0813'SOUTHEAST OF THE CENTER LINE OF THE NORTHBOUND LANE OF THE
 HV0813'HIGHWAY, AT THE MORE NORTHWESTERLY OF TWO POWER LINE TOWERS, 3
 HV0813'FEET SOUTHWEST OF THE NORTHWEST LEG OF THE TOWER AND 1 FOOT ABOVE
 HV0813'THE LEVEL OF THE HIGHWAY, A DISK ON THE TOP OF A 4-FOOT SECTION
 HV0813'OF COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE
 HV0813'DISK PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND AND IS
 HV0813'PROTECTED BY A 5-INCH METAL PIPE WHICH PROJECTS 2 INCHES ABOVE
 HV0813'THE LEVEL OF THE GROUND.
 HV0813
 HV0813                          STATION RECOVERY (1975)
 HV0813
 HV0813'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0813'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0814 ***********************************************************************
 HV0814  DESIGNATION -  AH 120
 HV0814  PID         -  HV0814
 HV0814  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0814  COUNTRY     -  US
 HV0814  USGS QUAD   -  UPPER MARLBORO (2016)
 HV0814
 HV0814                         *CURRENT SURVEY CONTROL
 HV0814  ______________________________________________________________________
 HV0814* NAD 83(1986) POSITION- 38 45 23.     (N) 076 48 36.     (W)   SCALED
 HV0814* NAVD 88 ORTHO HEIGHT -    70.676 (meters)      231.88  (feet) ADJUSTED
 HV0814  ______________________________________________________________________
 HV0814  GEOID HEIGHT    -        -32.863 (meters)                     GEOID18
 HV0814  DYNAMIC HEIGHT  -         70.635 (meters)      231.74  (feet) COMP
 HV0814  MODELED GRAVITY -    980,058.0   (mgal)                       NAVD 88
 HV0814
 HV0814  VERT ORDER      -  FIRST     CLASS II
 HV0814
 HV0814.The horizontal coordinates were scaled from a map and have
 HV0814.an estimated accuracy of +/- 6 seconds.
 HV0814
 HV0814.The orthometric height was determined by differential leveling and
 HV0814.adjusted by the NATIONAL GEODETIC SURVEY
 HV0814.in June 1991.
 HV0814
 HV0814.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0814.GEOID18 height accuracy estimate available here.
 HV0814
 HV0814.Click photographs - Photos may exist for this station.
 HV0814
 HV0814.The dynamic height is computed by dividing the NAVD 88
 HV0814.geopotential number by the normal gravity value computed on the
 HV0814.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0814.degrees latitude (g = 980.6199 gals.).
 HV0814
 HV0814.The modeled gravity was interpolated from observed gravity values.
 HV0814
 HV0814;                    North         East    Units  Estimated Accuracy
 HV0814;SPC MD       -   120,980.      416,520.      MT  (+/- 180 meters Scaled)
 HV0814
 HV0814_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH427912(NAD 83)
 HV0814
 HV0814                          SUPERSEDED SURVEY CONTROL
 HV0814
 HV0814  NGVD 29 (11/26/84)   70.909  (m)          232.64   (f) ADJUSTED    1 2
 HV0814
 HV0814.Superseded values are not recommended for survey control.
 HV0814
 HV0814.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0814.See file dsdata.pdf to determine how the superseded data were derived.
 HV0814
 HV0814_MARKER: DB = BENCH MARK DISK
 HV0814_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0814+WITH SETTING: INTO GROUND
 HV0814_STAMPING: AH 120 1971
 HV0814_MARK LOGO: CGS
 HV0814_PROJECTION: RECESSED 8 CENTIMETERS
 HV0814_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0814+STABILITY: SURFACE MOTION
 HV0814
 HV0814  HISTORY     - Date     Condition        Report By
 HV0814  HISTORY     - 1971     MONUMENTED       NGS
 HV0814  HISTORY     - 1975     GOOD             NGS
 HV0814
 HV0814                          STATION DESCRIPTION
 HV0814
 HV0814'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0814'AT ROSARYVILLE.
 HV0814'AT ROSARYVILLE, AT THE INTERSECTION OF ROSARYVILLE ROAD AND
 HV0814'U.S. HIGHWAY 301, ALSO INDIAN HEAD ROAD, ALONG THE SOUTHEAST SIDE
 HV0814'OF U.S. HIGHWAY 301, 104 FEET SOUTH OF THE INTERSECTION OF U.S.
 HV0814'HIGHWAY 301 AND OLD INDIAN HEAD ROAD, 77 FEET SOUTHWEST OF THE
 HV0814'CENTER LINE OF INDIAN HEAD ROAD, 2 FEET NORTHEAST OF POWER LINE
 HV0814'POLE 859956, 70 FEET SOUTHEAST OF THE CENTER LINE OF THE NORTHBOUND
 HV0814'LANE OF U.S. HIGHWAY 301, 1.5 FEET SOUTHWEST OF A STEEL WITNESS POST,
 HV0814'AND IS A DISK ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD 3 INCHES
 HV0814'BELOW THE LEVEL OF THE GROUND AND ATTACHED TO A METAL BASE PLATE.
 HV0814'THE DISK IS ENCASED IN A 4 INCH CONCRETE PIPE THAT PROJECTS 3 INCHES
 HV0814'ABOVE THE LEVEL OF THE GROUND.
 HV0814
 HV0814                          STATION RECOVERY (1975)
 HV0814
 HV0814'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0814'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6193 ***********************************************************************
 DN6193  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6193  DESIGNATION -  AILERON
 DN6193  PID         -  DN6193
 DN6193  STATE/COUNTY-  MD/CECIL
 DN6193  COUNTRY     -  US
 DN6193  USGS QUAD   -  ELKTON (2016)
 DN6193
 DN6193                         *CURRENT SURVEY CONTROL
 DN6193  ______________________________________________________________________
 DN6193* NAD 83(2011) POSITION- 39 34 21.98060(N) 075 51 53.29930(W)   ADJUSTED
 DN6193* NAD 83(2011) ELLIP HT-   -13.785 (meters)        (06/27/12)   ADJUSTED
 DN6193* NAD 83(2011) EPOCH   -  2010.00
 DN6193* NAVD 88 ORTHO HEIGHT -    19.43  (meters)       63.7   (feet) GPS OBS
 DN6193  ______________________________________________________________________
 DN6193  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6193  GEOID HEIGHT    -        -33.192 (meters)                     GEOID03
 DN6193  GEOID HEIGHT    -        -33.219 (meters)                     GEOID18
 DN6193  NAD 83(2011) X  -  1,202,262.093 (meters)                     COMP
 DN6193  NAD 83(2011) Y  - -4,773,992.806 (meters)                     COMP
 DN6193  NAD 83(2011) Z  -  4,041,525.896 (meters)                     COMP
 DN6193  LAPLACE CORR    -         -0.38  (seconds)                    DEFLEC18
 DN6193
 DN6193  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6193  Standards:
 DN6193         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6193            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6193  -------------------------------------------------------------------
 DN6193  NETWORK    0.49   1.00           0.23   0.16   0.51     -0.10495988
 DN6193  -------------------------------------------------------------------
 DN6193  Click here for local accuracies and other accuracy information.
 DN6193
 DN6193.The horizontal coordinates were established by GPS observations
 DN6193.and adjusted by the National Geodetic Survey in June 2012.
 DN6193
 DN6193.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6193.been affixed to the stable North American tectonic plate. See 
 DN6193.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6193
 DN6193.The horizontal coordinates are valid at the epoch date displayed above
 DN6193.which is a decimal equivalence of Year/Month/Day.
 DN6193
 DN6193.The orthometric height was determined by GPS observations and a
 DN6193.high-resolution geoid model using precise GPS observation and
 DN6193.processing techniques.
 DN6193
 DN6193.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6193.GEOID18 height accuracy estimate available here.
 DN6193
 DN6193.Click photographs - Photos may exist for this station.
 DN6193
 DN6193.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6193
 DN6193.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6193
 DN6193.The ellipsoidal height was determined by GPS observations
 DN6193.and is referenced to NAD 83.
 DN6193
 DN6193. The following values were computed from the NAD 83(2011) position.
 DN6193
 DN6193;                    North         East     Units Scale Factor Converg.
 DN6193;SPC MD       -   212,201.124   497,539.876   MT  1.00002378   +0 42 45.0
 DN6193;SPC MD       -   696,196.52  1,632,345.41   sFT  1.00002378   +0 42 45.0
 DN6193;UTM  18      - 4,380,698.012   425,721.949   MT  0.99966793   -0 33 03.4
 DN6193
 DN6193!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6193!SPC MD       -   1.00000216  x   1.00002378  =   1.00002594
 DN6193!UTM  18      -   1.00000216  x   0.99966793  =   0.99967009
 DN6193
 DN6193_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2572180698(NAD 83)
 DN6193
 DN6193                          SUPERSEDED SURVEY CONTROL
 DN6193
 DN6193  NAD 83(2007)-  39 34 21.98081(N)    075 51 53.29991(W) AD(2002.00) 1
 DN6193  ELLIP H (02/23/12)  -13.743  (m)                       GP(2002.00) 4 1
 DN6193
 DN6193.Superseded values are not recommended for survey control.
 DN6193
 DN6193.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6193.See file dsdata.pdf to determine how the superseded data were derived.
 DN6193
 DN6193_MARKER: DD = SURVEY DISK
 DN6193_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6193_STAMPING: AILERON 2008
 DN6193_MARK LOGO: MD-015
 DN6193_PROJECTION: FLUSH
 DN6193_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6193_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6193+STABILITY: SURFACE MOTION
 DN6193_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6193+SATELLITE: SATELLITE OBSERVATIONS - October 16, 2025
 DN6193
 DN6193  HISTORY     - Date     Condition        Report By
 DN6193  HISTORY     - 20081204 MONUMENTED       GWS
 DN6193  HISTORY     - 20220210 GOOD             MDSHA
 DN6193  HISTORY     - 20251016 GOOD             PROFLN
 DN6193
 DN6193                          STATION DESCRIPTION
 DN6193
 DN6193'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6193'THE STATION IS LOCATED ON THE WEST SIDE OF OLD FIELD POINT ROAD ABOUT
 DN6193'3.40 MI (5.5 KM) SOUTHWEST OF ELKTON AND 4.80 MI (7.7 KM) SOUTHEAST OF
 DN6193'THE TOWN OF NORTH EAST.
 DN6193'
 DN6193'TO REACH THE STATION FROM THE JUNCTION OF WEST PULASKI HIGHWAY (ROUTE
 DN6193'40) AND EAST OLD PHILADELPHIA ROAD (ROUTE 7), PROCEED WEST ON WEST
 DN6193'PULASKI HIGHWAY FOR 0.37 MI (0.6 KM) TO AN INTERSECTION.  TURN LEFT
 DN6193'AND GO SOUTH ON OLD ELK NECK ROAD FOR 3.59 MI (5.8 KM) TO A SIDE ROAD
 DN6193'ON THE LEFT.  TURN LEFT AND GO SOUTHEAST ON OLD CHESTNUT ROAD FOR 0.51
 DN6193'MI (0.8 KM) TO AN INTERSECTION.  TURN LEFT AND GO NORTHEAST ON OLD
 DN6193'FIELD POINT ROAD FOR 1.32 MI (2.1 KM) TO THE STATION ON THE LEFT, JUST
 DN6193'PAST RAINTREE LANE.
 DN6193'
 DN6193'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6193'CONCRETE MONUMENT ON THE WEST SIDE OF OLD FIELD POINT ROAD ON THE
 DN6193'NORTH SIDE OF ITS' INTERSECTION WITH RAINTREE LANE, 15.8 FT (4.8 M)
 DN6193'NORTH OF A MAG.  NAIL SET IN A LIGHT POLE, 62.1 SOUTHWEST OF A PK NAIL
 DN6193'SET IN LIGHT POLE AND 83.3 FT (25.4 M) WEST OF THE CENTERLINE OF OLD
 DN6193'FIELD POINT ROAD.
 DN6193
 DN6193                          STATION RECOVERY (2022)
 DN6193
 DN6193'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 DN6193'RECOVERED IN GOOD CONDITION.
 DN6193
 DN6193                          STATION RECOVERY (2025)
 DN6193
 DN6193'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6193'THE MARK IS 33 FT (10.1 M) NORTHEAST OF THE FIRST TANGENT SECTION OF
 DN6193'RAINTREE LANE - THE AIRFIELD ENTRANCE ROAD - ON TOP OF A HIGH BANK, 7
 DN6193'FT (2.1 M) NORTHEAST OF THE TOP OF THE BANK, 4 FT (1.2 M) SOUTHEAST OF
 DN6193'A LINE BETWEEN THE TWO LIGHT POLES, 1 FT (0.3 M) SOUTHEAST OF AN
 DN6193'ORANGE WITNESS POST, 10-12 FT (3.0 M) ABOVE OLDFIELD POINT ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DO9460 ***********************************************************************
 DO9460  DESIGNATION -  AIMD
 DO9460  PID         -  DO9460
 DO9460  STATE/COUNTY-  MD/ST MARYS
 DO9460  COUNTRY     -  US
 DO9460  USGS QUAD   -  SOLOMONS ISLAND (2016)
 DO9460
 DO9460                         *CURRENT SURVEY CONTROL
 DO9460  ______________________________________________________________________
 DO9460* NAD 83(2011) POSITION- 38 17 07.69735(N) 076 26 49.55077(W)   ADJUSTED
 DO9460* NAD 83(2011) ELLIP HT-   -31.342 (meters)        (09/09/13)   ADJUSTED
 DO9460* NAD 83(2011) EPOCH   -  2010.00
 DO9460* NAVD 88 ORTHO HEIGHT -     3.1   (meters)       10.    (feet) GPS OBS
 DO9460  ______________________________________________________________________
 DO9460  NAVD 88 orthometric height was determined with geoid model    GEOID12A
 DO9460  GEOID HEIGHT    -        -34.488 (meters)                     GEOID12A
 DO9460  GEOID HEIGHT    -        -34.486 (meters)                     GEOID18
 DO9460  NAD 83(2011) X  -  1,174,722.958 (meters)                     COMP
 DO9460  NAD 83(2011) Y  - -4,873,246.492 (meters)                     COMP
 DO9460  NAD 83(2011) Z  -  3,930,345.622 (meters)                     COMP
 DO9460  LAPLACE CORR    -         -5.75  (seconds)                    DEFLEC18
 DO9460
 DO9460  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DO9460  Standards:
 DO9460         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DO9460            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DO9460  -------------------------------------------------------------------
 DO9460  NETWORK    0.96   2.57           0.42   0.36   1.31     -0.10904617
 DO9460  -------------------------------------------------------------------
 DO9460  Click here for local accuracies and other accuracy information.
 DO9460
 DO9460.The horizontal coordinates were established by GPS observations
 DO9460.and adjusted by the GEOMETRICS GPS INCORPORATED in September 2013.
 DO9460
 DO9460.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DO9460.been affixed to the stable North American tectonic plate. See 
 DO9460.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DO9460
 DO9460.The horizontal coordinates are valid at the epoch date displayed above
 DO9460.which is a decimal equivalence of Year/Month/Day.
 DO9460
 DO9460.The orthometric height was determined by GPS observations and a
 DO9460.high-resolution geoid model.
 DO9460
 DO9460.Significant digits in the geoid height do not necessarily reflect accuracy.
 DO9460.GEOID18 height accuracy estimate available here.
 DO9460
 DO9460.Click photographs - Photos may exist for this station.
 DO9460
 DO9460.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DO9460
 DO9460.The Laplace correction was computed from DEFLEC18 derived deflections.
 DO9460
 DO9460.The ellipsoidal height was determined by GPS observations
 DO9460.and is referenced to NAD 83.
 DO9460
 DO9460. The following values were computed from the NAD 83(2011) position.
 DO9460
 DO9460;                    North         East     Units Scale Factor Converg.
 DO9460;SPC MD       -    68,836.650   448,373.765   MT  1.00000256   +0 20 49.3
 DO9460;SPC MD       -   225,841.58  1,471,039.59   sFT  1.00000256   +0 20 49.3
 DO9460;UTM  18      - 4,238,479.804   373,439.644   MT  0.99979726   -0 53 48.2
 DO9460
 DO9460!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DO9460!SPC MD       -   1.00000492  x   1.00000256  =   1.00000748
 DO9460!UTM  18      -   1.00000492  x   0.99979726  =   0.99980218
 DO9460
 DO9460_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7343938479(NAD 83)
 DO9460
 DO9460                          SUPERSEDED SURVEY CONTROL
 DO9460
 DO9460.No superseded survey control is available for this station.
 DO9460
 DO9460_MARKER: F = FLANGE-ENCASED ROD
 DO9460_SETTING: 45 = UNSPECIFIED DEEP UNSLEEVED SETTING (10 FT.+)
 DO9460_STAMPING: AIMD
 DO9460_MARK LOGO: USN
 DO9460_PROJECTION: RECESSED 5 CENTIMETERS
 DO9460_MAGNETIC: I = MARKER IS A STEEL ROD
 DO9460_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DO9460_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DO9460+SATELLITE: SATELLITE OBSERVATIONS - January 01, 2000
 DO9460_ROD/PIPE-DEPTH: 7.6 meters
 DO9460
 DO9460  HISTORY     - Date     Condition        Report By
 DO9460  HISTORY     - 20000101 MONUMENTED       USN
 DO9460
 DO9460                          STATION DESCRIPTION
 DO9460
 DO9460'DESCRIBED BY US NAVY 2000
 DO9460'THE STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) EAST-SOUTHEAST OF
 DO9460'HOLLYWOOD, 7.3 MI (11.7 KM) SOUTH-SOUTHWEST OF COVE POINT AND 6.8 MI
 DO9460'(10.9 KM) NORTH OF SAINT MARYS CITY.
 DO9460'
 DO9460'TO REACH FROM THE INTERSECTION OF MARYLAND ROUTE 235, THREE NOTCH ROAD
 DO9460'AND BUSE ROAD, GO SOUTHEAST ON BUSE ROAD 0.6 MI (1.0 KM) TO AN
 DO9460'INTERSECTION WITH CUDDIHY ROAD.  TURN LEFT AND GO 0.67 MI (1.1 KM) TO
 DO9460'A STOP SIGN AND INTERSECTION WITH TATE ROAD.  TURN RIGHT AND GO 0.16
 DO9460'MI (0.3 KM) EAST TO THE STATION ON THE LEFT.
 DO9460'
 DO9460'THE STATION IS A DISK STAMPED --AIMD-- ON A ROD DRIVEN TO AN UNKNOWN
 DO9460'DEPTH.  THE LOGO CAP IS SET FLUSH WITH THE GROUND AND THE TOP OF THE
 DO9460'DISK IS 10 CM (4 INCHES) BELOW THE TOP OF THE LOGO CAP.  THE MARK IS
 DO9460'70.0 FT (21.3 M) NORTHWEST OF AN ANCHOR, 112.7 FT (34.4 M) WEST OF THE
 DO9460'CORNER OF AN 8 FT (2.4 M) TALL CHAIN LINK FENCE, 117.7 FT (35.9 M)
 DO9460'SOUTHWEST OF THE EASTERN GATE POST IN THE CHAIN LINK FENCE, 180.6 FT
 DO9460'(55.0 M) SOUTHEAST OF THE NORTHEASTERN CORNER OF BUILDING 332, 176.7
 DO9460'FT (53.9 M) SOUTHEAST OF THE SOUTHEASTERN CORNER OF BUILDING 332, 94.6
 DO9460'FT (28.8 M) NORTHEAST OF A LIGHT POLE, 60.3 FT (18.4 M) NORTH OF THE
 DO9460'EDGE OF PAVEMENT ON TATE ROAD, 1.0 FT (0.3 M) SOUTHWEST OF A
 DO9460'FIBERGLASS WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0116 ***********************************************************************
 JV0116  DESIGNATION -  AIR
 JV0116  PID         -  JV0116
 JV0116  STATE/COUNTY-  MD/HARFORD
 JV0116  COUNTRY     -  US
 JV0116  USGS QUAD   -  ABERDEEN (2016)
 JV0116
 JV0116                         *CURRENT SURVEY CONTROL
 JV0116  ______________________________________________________________________
 JV0116* NAD 83(1991) POSITION- 39 31 31.43636(N) 076 11 28.71304(W)   ADJUSTED
 JV0116* NAVD 88 ORTHO HEIGHT -    79.514 (meters)      260.87  (feet) ADJUSTED
 JV0116  ______________________________________________________________________
 JV0116  GEOID HEIGHT    -        -33.039 (meters)                     GEOID18
 JV0116  LAPLACE CORR    -         -2.75  (seconds)                    DEFLEC18
 JV0116  DYNAMIC HEIGHT  -         79.474 (meters)      260.74  (feet) COMP
 JV0116  MODELED GRAVITY -    980,126.8   (mgal)                       NAVD 88
 JV0116
 JV0116  HORZ ORDER      -  SECOND
 JV0116  VERT ORDER      -  SECOND    CLASS 0
 JV0116
 JV0116.The horizontal coordinates were established by classical geodetic methods
 JV0116.and adjusted by the National Geodetic Survey in January 1992.
 JV0116
 JV0116.The orthometric height was determined by differential leveling and
 JV0116.adjusted by the NATIONAL GEODETIC SURVEY
 JV0116.in June 1991.
 JV0116
 JV0116.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0116.GEOID18 height accuracy estimate available here.
 JV0116
 JV0116.Click photographs - Photos may exist for this station.
 JV0116
 JV0116.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0116
 JV0116.The dynamic height is computed by dividing the NAVD 88
 JV0116.geopotential number by the normal gravity value computed on the
 JV0116.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0116.degrees latitude (g = 980.6199 gals.).
 JV0116
 JV0116.The modeled gravity was interpolated from observed gravity values.
 JV0116
 JV0116. The following values were computed from the NAD 83(1991) position.
 JV0116
 JV0116;                    North         East     Units Scale Factor Converg.
 JV0116;SPC MD       -   206,642.859   469,533.007   MT  1.00001406   +0 30 27.2
 JV0116;SPC MD       -   677,960.78  1,540,459.54   sFT  1.00001406   +0 30 27.2
 JV0116;UTM  18      - 4,375,760.819   397,608.284   MT  0.99972908   -0 45 29.7
 JV0116
 JV0116!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0116!SPC MD       -   0.99999271  x   1.00001406  =   1.00000677
 JV0116!UTM  18      -   0.99999271  x   0.99972908  =   0.99972179
 JV0116
 JV0116:                Primary Azimuth Mark                     Grid Az
 JV0116:SPC MD       -  CHAPEL HILL RESERVOIR TANK               022 53 09.1
 JV0116:UTM  18      -  CHAPEL HILL RESERVOIR TANK               024 09 06.0
 JV0116
 JV0116_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9760875760(NAD 83)
 JV0116
 JV0116|---------------------------------------------------------------------|
 JV0116| PID    Reference Object                     Distance      Geod. Az  |
 JV0116|                                                           dddmmss.s |
 JV0116| JV4801 CHAPEL HILL RESERVOIR TANK          APPROX. 4.2 KM 0232336.3 |
 JV0116| CA9862 AIR RM 1                             20.173 METERS 10150     |
 JV0116| CA9863 AIR RM 2                             29.480 METERS 22346     |
 JV0116| JV0118 BLAIR 2                             266.025 METERS 35542     |
 JV0116|---------------------------------------------------------------------|
 JV0116
 JV0116                          SUPERSEDED SURVEY CONTROL
 JV0116
 JV0116  NAD 83(1986)-  39 31 31.43124(N)    076 11 28.71881(W) AD(       ) 2
 JV0116  NAD 27      -  39 31 31.04050(N)    076 11 29.88700(W) AD(       ) 2
 JV0116  NGVD 29              79.80   (m)          261.8    (f) LEVELING    3  
 JV0116  NGVD 29 (11/26/84)   79.770  (m)          261.71   (f) ADJUSTED    2 0
 JV0116
 JV0116.Superseded values are not recommended for survey control.
 JV0116
 JV0116.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0116.See file dsdata.pdf to determine how the superseded data were derived.
 JV0116
 JV0116_MARKER: DE = TRAVERSE STATION DISK
 JV0116_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0116_STAMPING: AIR 1958
 JV0116_MARK LOGO: CGS
 JV0116_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0116+STABILITY: SURFACE MOTION
 JV0116
 JV0116  HISTORY     - Date     Condition        Report By
 JV0116  HISTORY     - 1958     MONUMENTED       CGS
 JV0116  HISTORY     - 1959     GOOD             CGS
 JV0116  HISTORY     - 1962     GOOD             CGS
 JV0116  HISTORY     - 1963     GOOD             CGS
 JV0116  HISTORY     - 1973     MARK NOT FOUND   NGS
 JV0116  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 JV0116
 JV0116                          STATION DESCRIPTION
 JV0116
 JV0116'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0116'THIS IS AN UNOCCUPIED TRAVERSE STATION.
 JV0116'
 JV0116'STATION IS LOCATED ABOUT 2 MILES NORTHWEST OF THE CENTER OF
 JV0116'ABERDEEN, ABOUT 6 MILES SOUTHWEST OF THE WEST END OF THE SUSQUEHANNA
 JV0116'RIVER BRIDGE AND ON THE RIGHT-OF-WAY OF STATE HIGHWAY NO. 22.  IT
 JV0116'IS 38 FEET SOUTHWEST OF THE CENTERLINE OF STATE HIGHWAY NO. 22,
 JV0116'32 FEET EAST-SOUTHEAST OF THE CENTERLINE OF A GRAVELED ROAD, 36
 JV0116'1/2 FEET SOUTH OF A POWERLINE POLE, AND 3-1/2 FEET SOUTHWEST OF
 JV0116'A WITNESS POST.  THE CONCRETE MARK IS SET FLUSH WITH THE GROUND
 JV0116'AND MARKED WITH A STANDARD TRAVERSE DISC THAT IS STAMPED, AIR
 JV0116'1958.
 JV0116'
 JV0116'THE STATION MAY BE REACHED FROM THE JUNCTION OF U.S. HIGHWAY
 JV0116'NO. 40 AND STATE HIGHWAY NO. 22 IN ABERDEEN BY GOING NORTHWESTERLY
 JV0116'ON STATE ROUTE NO. 22 FOR 0.7 MILE TO STATE HIGHWAY NO. 462 ON
 JV0116'THE RIGHT.  CONTINUE NORTHERLY ON STATE ROUTE NO. 22 FOR 1.4 MILE
 JV0116'TO STATION ON THE LEFT AS DESCRIBED ABOVE.
 JV0116'
 JV0116'THE TRAVERSE DISTANCE FROM TRAVERSE STATION BLAIR IS 193.841 M. OR
 JV0116'635.96 FEET.
 JV0116
 JV0116                          STATION RECOVERY (1959)
 JV0116
 JV0116'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV0116'1.9 MI NW FROM ABERDEEN.
 JV0116'ABOUT 1.9 MILES NORTHWEST ALONG STATE HIGHWAY 22 FROM THE POST
 JV0116'OFFICE AT ABERDEEN, AT THE T JUNCTION OF A GRAVEL ROAD LEADING
 JV0116'WEST, 38 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, 30
 JV0116'FEET SOUTHEAST OF THE CENTER LINE OF THE GRAVEL ROAD, 36 FEET
 JV0116'SOUTH OF A POWER LINE POLE, 3 1/2 FEET SOUTHWEST OF A METAL
 JV0116'WITNESS POST, ABOUT 1 FOOT ABOVE THE LEVEL OF THE ROAD AND SET IN
 JV0116'THE TOP OF A CONCRETE POST PROJECTING 1-INCH ABOVE THE GROUND.
 JV0116
 JV0116                          STATION RECOVERY (1962)
 JV0116
 JV0116'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 JV0116'THE MARK WAS RECOVERED AS DESCRIBED AND FOUND IN GOOD
 JV0116'CONDITION.  THIS STATION WAS OCCUPIED AS SHOWN ON THIS DATE TO
 JV0116'DETERMINE THE NEW LOCATION OF STATION BLAIR 2, AS BLAIR 1958 IS
 JV0116'TO BE DESTROYED.
 JV0116'
 JV0116'THE TO REACH THE STATION IS ADEQUATE.
 JV0116'
 JV0116'HEIGHT OF LIGHT ABOVE STATION MARK 2 METERS.
 JV0116
 JV0116                          STATION RECOVERY (1963)
 JV0116
 JV0116'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (MJT)
 JV0116'THE STATION MARK WAS RECOVERED IN GOOD CONDITION.  TWO REFERENCE
 JV0116'MARKS WERE ESTABLISHED.  A NEW DESCRIPTION FOLLOWS--STATION IS
 JV0116'LOCATED ABOUT 2 MILES NORTHWEST OF THE CENTER OF ABERDEEN, ABOUT
 JV0116'6 MILES SOUTHWEST OF THE WEST END OF THE SUSQUEHANNA RIVER BRIDGE
 JV0116'AND ON THE RIGHT-OF-WAY OF STATE HIGHWAY NO.22.  IT IS 38 FEET
 JV0116'SOUTHWEST OF THE CENTERLINE OF HIGHWAY NO. 22 AND 32 FEET
 JV0116'EAST-SOUTHEAST OF THE CENTERLINE OF A GRAVELED ROAD.  THIS
 JV0116'GRAVEL ROAD ENDS ABOUT 250 FEET SOUTH-SOUTHWEST OF THE STATION
 JV0116'ON THE EDGE OF A CUT FOR A HIGHWAY UNDER CONSTRUCTION.  THE
 JV0116'MARK IS A 10 BY 10 INCH CONCRETE MONUMENT WHICH PROJECTS 2
 JV0116'INCHES.  THE DISK IS A STANDARD TRAVERSE DISK THAT IS
 JV0116'STAMPED AIR 1958.
 JV0116'
 JV0116'REFERENCE MARK NO.1 IS 21.3 FEET SOUTHWEST OF CENTERLINE OF
 JV0116'STATE HIGHWAY NO.22, ON TOP OF A 4 FOOT BANK BORDERING THE
 JV0116'HIGHWAY, 50 FEET WEST OF TWIN TREES AND 8 FEET NORTHEAST OF TWIN
 JV0116'TREES.  THE MARK IS A 10 INCH CONCRETE MONUMENT WHICH PROJECTS
 JV0116'3 INCHES.  THE DISK IS A STANDARD TRIANGULATION REFERENCE MARK
 JV0116'STAMPED AIR NO 1 1958.
 JV0116'
 JV0116'REFERENCE MARK NO. 2 IS 133 FEET SOUTH OF CENTERLINE OF STATE
 JV0116'HIGHWAY NO. 22, ON WEST EDGE AND 16 FEET WEST OF CENTERLINE OF
 JV0116'GRAVEL ROAD WHICH ENDS ON EDGE OF CUT FOR HIGHWAY UNDER
 JV0116'CONSTRUCTION ABOUT 141 FEET SOUTH OF MARK.  THE MARK IS A 10 INCH
 JV0116'DIAMETER CONCRETE MONUMENT WHICH PROJECTS 3 INCHES.  THE
 JV0116'DISK IS A STANDARD TRIANGULATION REFERENCE MARK DISK STAMPED AIR
 JV0116'NO 2 1958.
 JV0116'
 JV0116'THE MEASURED DISTANCE BETWEEN R.M.NO. 1 AND R.M.NO.2 IS 143.21
 JV0116'FEET.
 JV0116'
 JV0116'THE STATION MAY BE REACHED FROM THE JUNCTION OF U.S. HIGHWAY
 JV0116'NO.40 AND STATE HIGHWAY NO.22 IN ABERDEEN BY GOING NORTHWESTERLY
 JV0116'ON HIGHWAY NO 22 FOR 0.7 MILE TO STATE HIGHWAY NO.462 ON THE
 JV0116'RIGHT, CONTINUE NORTHERLY ON STATE HIGHWAY NO.22 FOR 1.4 MILE TO
 JV0116'STATION ON THE LEFT AS DESCRIBED.
 JV0116
 JV0116                          STATION RECOVERY (1973)
 JV0116
 JV0116'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV0116'THE STATION WAS SEARCHED FOR BUT NO MARKS WERE FOUND.  IT IS
 JV0116'BELIEVED ALL MARKS WERE DESTROYED DURING CONSTRUCTION IN THE AREA.
 JV0116'
 JV0116'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV0116'2 MILES NORTHWEST OF ABERDEEN.
 JV0116
 JV0116                          STATION RECOVERY (1983)
 JV0116
 JV0116'RECOVERY NOTE BY US POWER SQUADRON 1983 (CAS)
 JV0116'STATION NOT RECOVERED.
 JV0116'
 JV0116'RECOVERY NOTE--TRAVERSE STATION - A DILIGENT SEARCH WAS MADE
 JV0116'FOR THE STATION.
 JV0116'
 JV0116'NO MARKS WERE FOUND.  IT IS BELIEVED THIS STATION WAS DESTROYED
 JV0116'DURING CONSTRUCTION OF INTERSTATE ROUTE 95.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6940 ***********************************************************************
 JV6940  DESIGNATION -  AIRPARK
 JV6940  PID         -  JV6940
 JV6940  STATE/COUNTY-  MD/BALTIMORE
 JV6940  COUNTRY     -  US
 JV6940  USGS QUAD   -  WHITE MARSH (2016)
 JV6940
 JV6940                         *CURRENT SURVEY CONTROL
 JV6940  ______________________________________________________________________
 JV6940* NAD 83(2011) POSITION- 39 24 18.44668(N) 076 25 18.04696(W)   ADJUSTED
 JV6940* NAD 83(2011) ELLIP HT-    11.088 (meters)        (06/27/12)   ADJUSTED
 JV6940* NAD 83(2011) EPOCH   -  2010.00
 JV6940* NAVD 88 ORTHO HEIGHT -    44.023 (meters)      144.43  (feet) ADJUSTED
 JV6940  ______________________________________________________________________
 JV6940  GEOID HEIGHT    -        -32.934 (meters)                     GEOID18
 JV6940  NAD 83(2011) X  -  1,158,589.656 (meters)                     COMP
 JV6940  NAD 83(2011) Y  - -4,796,976.723 (meters)                     COMP
 JV6940  NAD 83(2011) Z  -  4,027,177.094 (meters)                     COMP
 JV6940  LAPLACE CORR    -         -3.89  (seconds)                    DEFLEC18
 JV6940  DYNAMIC HEIGHT  -         44.001 (meters)      144.36  (feet) COMP
 JV6940  MODELED GRAVITY -    980,108.5   (mgal)                       NAVD 88
 JV6940
 JV6940  VERT ORDER      -  SECOND    CLASS I
 JV6940
 JV6940  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6940  Standards:
 JV6940         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6940            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6940  -------------------------------------------------------------------
 JV6940  NETWORK    0.65   1.57           0.28   0.25   0.80     -0.01074261
 JV6940  -------------------------------------------------------------------
 JV6940  Click here for local accuracies and other accuracy information.
 JV6940
 JV6940.The horizontal coordinates were established by GPS observations
 JV6940.and adjusted by the National Geodetic Survey in June 2012.
 JV6940
 JV6940.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6940.been affixed to the stable North American tectonic plate. See 
 JV6940.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6940
 JV6940.The horizontal coordinates are valid at the epoch date displayed above
 JV6940.which is a decimal equivalence of Year/Month/Day.
 JV6940
 JV6940.The orthometric height was determined by differential leveling and
 JV6940.adjusted by the NATIONAL GEODETIC SURVEY
 JV6940.in June 1995.
 JV6940
 JV6940.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6940.GEOID18 height accuracy estimate available here.
 JV6940
 JV6940.Click photographs - Photos may exist for this station.
 JV6940
 JV6940.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6940
 JV6940.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6940
 JV6940.The ellipsoidal height was determined by GPS observations
 JV6940.and is referenced to NAD 83.
 JV6940
 JV6940.The dynamic height is computed by dividing the NAVD 88
 JV6940.geopotential number by the normal gravity value computed on the
 JV6940.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6940.degrees latitude (g = 980.6199 gals.).
 JV6940
 JV6940.The modeled gravity was interpolated from observed gravity values.
 JV6940
 JV6940. The following values were computed from the NAD 83(2011) position.
 JV6940
 JV6940;                    North         East     Units Scale Factor Converg.
 JV6940;SPC MD       -   193,139.164   449,810.157   MT  0.99999246   +0 21 46.7
 JV6940;SPC MD       -   633,657.41  1,475,752.16   sFT  0.99999246   +0 21 46.7
 JV6940;UTM  18      - 4,362,699.316   377,596.897   MT  0.99978447   -0 54 09.3
 JV6940
 JV6940!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6940!SPC MD       -   0.99999826  x   0.99999246  =   0.99999072
 JV6940!UTM  18      -   0.99999826  x   0.99978447  =   0.99978273
 JV6940
 JV6940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7759662699(NAD 83)
 JV6940
 JV6940                          SUPERSEDED SURVEY CONTROL
 JV6940
 JV6940  NAD 83(2007)-  39 24 18.44691(N)    076 25 18.04762(W) AD(2002.00) 0
 JV6940  ELLIP H (02/10/07)   11.107  (m)                       GP(2002.00)    
 JV6940  ELLIP H (08/30/02)   11.103  (m)                       GP(       ) 4 2
 JV6940  NAD 83(1991)-  39 24 18.44701(N)    076 25 18.04746(W) AD(       ) 1
 JV6940  ELLIP H (09/15/92)   11.096  (m)                       GP(       ) 4 1
 JV6940  NAVD 88 (04/08/97)   44.0    (m)  GEOID93  model used  GPS OBS        
 JV6940  NGVD 29 (09/15/92)   44.3    (m)  GEOID90  model used  GPS OBS        
 JV6940
 JV6940.Superseded values are not recommended for survey control.
 JV6940
 JV6940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6940.See file dsdata.pdf to determine how the superseded data were derived.
 JV6940
 JV6940_MARKER: DD = SURVEY DISK
 JV6940_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6940_STAMPING: AIRPARK 1991
 JV6940_MARK LOGO: MDSHA
 JV6940_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6940_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6940+STABILITY: SURFACE MOTION
 JV6940_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6940+SATELLITE: SATELLITE OBSERVATIONS - September 26, 2012
 JV6940
 JV6940  HISTORY     - Date     Condition        Report By
 JV6940  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6940  HISTORY     - 19950203 GOOD             MCCRON
 JV6940  HISTORY     - 19970319 GOOD             DMW
 JV6940  HISTORY     - 20010627 GOOD             DMW
 JV6940  HISTORY     - 20111005 GOOD             INDIV
 JV6940  HISTORY     - 20120926 GOOD             WOOLPT
 JV6940
 JV6940                          STATION DESCRIPTION
 JV6940
 JV6940'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6940'THE MARKER IS LOCATED ABOUT 12.6 MI (20.3 KM) NORTHEAST OF BALTIMORE,
 JV6940'2.2 MI (3.5 KM) EAST OF PERRY HALL, AND IS ALONG THE SOUTH BOUND LANE
 JV6940'OF INTERSTATE HIGHWAY 95.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE
 JV6940'MARKER FROM A POINT WHERE NEW FORGE ROAD CROSSES OVER INTERSTATE
 JV6940'HIGHWAY 95, GO SOUTH ON INTERSTATE HIGHWAY 95 FOR O.4 MITO THE MARKER
 JV6940'ON THE RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JV6940'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS FLUSH
 JV6940'WITH THE SURFACE OF THE GROUND.  IT IS 10.7 FT (3.3 M) NORTHWEST OF
 JV6940'THE NORTHWEST EDGE OF THE MOST NORTHWEST PAVED SHOULDER OF THE
 JV6940'SOUTHBOUND LANE OF INTERSTATE HIGHWAY 95 AND 15.0 FT (4.6 M)
 JV6940'SOUTHEAST OF THE CENTER OF A ROW OF 4-FOOT HIGH CEDAR TREES.
 JV6940
 JV6940                          STATION RECOVERY (1995)
 JV6940
 JV6940'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6940'RECOVERED AS DESCRIBED.
 JV6940
 JV6940                          STATION RECOVERY (1997)
 JV6940
 JV6940'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6940'RECOVERED AS DESCRIBED.
 JV6940
 JV6940                          STATION RECOVERY (2001)
 JV6940
 JV6940'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV6940'RECOVERED IN GOOD CONDITION.
 JV6940
 JV6940                          STATION RECOVERY (2011)
 JV6940
 JV6940'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (JFS)
 JV6940'RECOVERED AS DESCRIBED
 JV6940'USED FOR STATIC GPS
 JV6940
 JV6940                          STATION RECOVERY (2012)
 JV6940
 JV6940'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JS)
 JV6940'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6708 ***********************************************************************
 JV6708  DESIGNATION -  AIRPORT
 JV6708  PID         -  JV6708
 JV6708  STATE/COUNTY-  MD/HARFORD
 JV6708  COUNTRY     -  US
 JV6708  USGS QUAD   -  ABERDEEN (2016)
 JV6708
 JV6708                         *CURRENT SURVEY CONTROL
 JV6708  ______________________________________________________________________
 JV6708* NAD 83(2011) POSITION- 39 33 49.42722(N) 076 11 51.03111(W)   ADJUSTED
 JV6708* NAD 83(2011) ELLIP HT-    87.905 (meters)        (06/27/12)   ADJUSTED
 JV6708* NAD 83(2011) EPOCH   -  2010.00
 JV6708* NAVD 88 ORTHO HEIGHT -   120.9   (meters)      397.    (feet) GPS OBS
 JV6708  ______________________________________________________________________
 JV6708  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6708  GEOID HEIGHT    -        -33.240 (meters)                     GEOID93
 JV6708  GEOID HEIGHT    -        -32.950 (meters)                     GEOID18
 JV6708  NAD 83(2011) X  -  1,174,691.790 (meters)                     COMP
 JV6708  NAD 83(2011) Y  - -4,781,590.725 (meters)                     COMP
 JV6708  NAD 83(2011) Z  -  4,040,816.743 (meters)                     COMP
 JV6708  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 JV6708
 JV6708  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6708  Standards:
 JV6708         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6708            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6708  -------------------------------------------------------------------
 JV6708  NETWORK    1.29   3.27           0.55   0.48   1.67      0.35668042
 JV6708  -------------------------------------------------------------------
 JV6708  Click here for local accuracies and other accuracy information.
 JV6708
 JV6708.The horizontal coordinates were established by GPS observations
 JV6708.and adjusted by the National Geodetic Survey in June 2012.
 JV6708
 JV6708.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6708.been affixed to the stable North American tectonic plate. See 
 JV6708.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6708
 JV6708.The horizontal coordinates are valid at the epoch date displayed above
 JV6708.which is a decimal equivalence of Year/Month/Day.
 JV6708
 JV6708.The orthometric height was determined by GPS observations and a
 JV6708.high-resolution geoid model.
 JV6708
 JV6708.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6708.GEOID18 height accuracy estimate available here.
 JV6708
 JV6708.Click photographs - Photos may exist for this station.
 JV6708
 JV6708.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6708
 JV6708.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6708
 JV6708.The ellipsoidal height was determined by GPS observations
 JV6708.and is referenced to NAD 83.
 JV6708
 JV6708. The following values were computed from the NAD 83(2011) position.
 JV6708
 JV6708;                    North         East     Units Scale Factor Converg.
 JV6708;SPC MD       -   210,893.777   468,962.567   MT  1.00002187   +0 30 13.2
 JV6708;SPC MD       -   691,907.33  1,538,588.02   sFT  1.00002187   +0 30 13.2
 JV6708;UTM  18      - 4,380,022.076   397,132.050   MT  0.99973028   -0 45 46.1
 JV6708
 JV6708!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6708!SPC MD       -   0.99998621  x   1.00002187  =   1.00000808
 JV6708!UTM  18      -   0.99998621  x   0.99973028  =   0.99971649
 JV6708
 JV6708:                Primary Azimuth Mark                     Grid Az
 JV6708:SPC MD       -  AIRPORT AZ MK                            208 04 57.9
 JV6708:UTM  18      -  AIRPORT AZ MK                            209 20 57.2
 JV6708
 JV6708_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9713280022(NAD 83)
 JV6708
 JV6708|---------------------------------------------------------------------|
 JV6708| PID    Reference Object                     Distance      Geod. Az  |
 JV6708|                                                           dddmmss.s |
 JV6708| JV6709 AIRPORT AZ MK                       APPROX. 0.6 KM 2083511.1 |
 JV6708|---------------------------------------------------------------------|
 JV6708
 JV6708                          SUPERSEDED SURVEY CONTROL
 JV6708
 JV6708  NAD 83(2007)-  39 33 49.42726(N)    076 11 51.03197(W) AD(2002.00) 0
 JV6708  ELLIP H (02/10/07)   87.923  (m)                       GP(2002.00)    
 JV6708  ELLIP H (09/18/02)   87.936  (m)                       GP(       ) 4 2
 JV6708  NAD 83(1991)-  39 33 49.42694(N)    076 11 51.03250(W) AD(       ) 1
 JV6708  ELLIP H (01/27/92)   87.925  (m)                       GP(       ) 4 1
 JV6708  NAD 83(1986)-  39 33 49.42012(N)    076 11 51.03889(W) AD(       ) 1
 JV6708  NGVD 29 (06/18/91)  121.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6708
 JV6708.Superseded values are not recommended for survey control.
 JV6708
 JV6708.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6708.See file dsdata.pdf to determine how the superseded data were derived.
 JV6708
 JV6708_MARKER: DD = SURVEY DISK
 JV6708_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6708_STAMPING: 26 AIRPORT 1989
 JV6708_MARK LOGO: MD-025
 JV6708_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6708_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6708+STABILITY: SURFACE MOTION
 JV6708_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6708+SATELLITE: SATELLITE OBSERVATIONS - December 09, 1993
 JV6708
 JV6708  HISTORY     - Date     Condition        Report By
 JV6708  HISTORY     - 1989     MONUMENTED       RDA
 JV6708  HISTORY     - 19931209 GOOD             GEOMET
 JV6708
 JV6708                          STATION DESCRIPTION
 JV6708
 JV6708'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6708'THE STATION IS LOCATED IN EASTERN HARFORD COUNTY, MARYLAND ABOUT 2.5
 JV6708'MILES NORTHWEST OF THE TOWN OF ABERDEEN ON CARSINS RUN ROAD.
 JV6708'TO REACH THE STATION FROM THE INTERCHANGE OF U.S. HIGHWAY 95 AND STATE
 JV6708'HIGHWAY 155 PROCEED NORTHWEST ALONG HIGHWAY 155 1.25 MILES TO ITS
 JV6708'INTERSECTION WITH ALDINO ROAD, STATE HIGHWAY 156.  TURN LEFT AND
 JV6708'PROCEED SOUTHWEST ALONG ALDINO ROAD 1.4 MILES TO CARSINS RUN ROAD AND
 JV6708'THE STATION ON THE LEFT.
 JV6708'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6708'ABOUT 1 INCH BELOW GROUND STAMPED 26 AIRPORT 1989.  THE STATION IS
 JV6708'58.0 FEET SOUTHEAST FROM G AND E POLE NUMBER 77551, 78.0 FEET
 JV6708'SOUTHWEST OF B G AND E POLE NUMBER 77552, 11.6 FEET WEST FROM THE WEST
 JV6708'EDGE OF PAVEMENT OF CARSINS RUN ROAD.
 JV6708
 JV6708                          STATION RECOVERY (1993)
 JV6708
 JV6708'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6708'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6709 ***********************************************************************
 JV6709  DESIGNATION -  AIRPORT AZ MK
 JV6709  PID         -  JV6709
 JV6709  STATE/COUNTY-  MD/HARFORD
 JV6709  COUNTRY     -  US
 JV6709  USGS QUAD   -  ABERDEEN (2016)
 JV6709
 JV6709                         *CURRENT SURVEY CONTROL
 JV6709  ______________________________________________________________________
 JV6709* NAD 83(2011) POSITION- 39 33 31.25798(N) 076 12 03.82145(W)   ADJUSTED
 JV6709* NAD 83(2011) ELLIP HT-    89.577 (meters)        (06/27/12)   ADJUSTED
 JV6709* NAD 83(2011) EPOCH   -  2010.00
 JV6709* NAVD 88 ORTHO HEIGHT -   122.5   (meters)      402.    (feet) VERTCON3
 JV6709  ______________________________________________________________________
 JV6709  GEOID HEIGHT    -        -32.954 (meters)                     GEOID18
 JV6709  NAD 83(2011) X  -  1,174,480.717 (meters)                     COMP
 JV6709  NAD 83(2011) Y  - -4,782,011.402 (meters)                     COMP
 JV6709  NAD 83(2011) Z  -  4,040,385.803 (meters)                     COMP
 JV6709  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 JV6709
 JV6709  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6709  Standards:
 JV6709         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6709            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6709  -------------------------------------------------------------------
 JV6709  NETWORK    1.50   3.67           0.65   0.54   1.87      0.38905694
 JV6709  -------------------------------------------------------------------
 JV6709  Click here for local accuracies and other accuracy information.
 JV6709
 JV6709.The horizontal coordinates were established by GPS observations
 JV6709.and adjusted by the National Geodetic Survey in June 2012.
 JV6709
 JV6709.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6709.been affixed to the stable North American tectonic plate. See 
 JV6709.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6709
 JV6709.The horizontal coordinates are valid at the epoch date displayed above
 JV6709.which is a decimal equivalence of Year/Month/Day.
 JV6709
 JV6709.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6709.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6709
 JV6709.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6709.GEOID18 height accuracy estimate available here.
 JV6709
 JV6709.Click photographs - Photos may exist for this station.
 JV6709
 JV6709.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6709
 JV6709.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6709
 JV6709.The ellipsoidal height was determined by GPS observations
 JV6709.and is referenced to NAD 83.
 JV6709
 JV6709. The following values were computed from the NAD 83(2011) position.
 JV6709
 JV6709;                    North         East     Units Scale Factor Converg.
 JV6709;SPC MD       -   210,330.758   468,662.160   MT  1.00002082   +0 30 05.2
 JV6709;SPC MD       -   690,060.16  1,537,602.44   sFT  1.00002082   +0 30 05.2
 JV6709;UTM  18      - 4,379,465.996   396,819.364   MT  0.99973107   -0 45 53.9
 JV6709
 JV6709!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6709!SPC MD       -   0.99998595  x   1.00002082  =   1.00000677
 JV6709!UTM  18      -   0.99998595  x   0.99973107  =   0.99971702
 JV6709
 JV6709:                Primary Azimuth Mark                     Grid Az
 JV6709:SPC MD       -  AIRPORT                                  028 04 57.8
 JV6709:UTM  18      -  AIRPORT                                  029 20 56.9
 JV6709
 JV6709_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9681979465(NAD 83)
 JV6709
 JV6709|---------------------------------------------------------------------|
 JV6709| PID    Reference Object                     Distance      Geod. Az  |
 JV6709|                                                           dddmmss.s |
 JV6709| JV6708 AIRPORT                             APPROX. 0.6 KM 0283503.0 |
 JV6709|---------------------------------------------------------------------|
 JV6709
 JV6709                          SUPERSEDED SURVEY CONTROL
 JV6709
 JV6709  NAD 83(2007)-  39 33 31.25802(N)    076 12 03.82230(W) AD(2002.00) 0
 JV6709  ELLIP H (02/10/07)   89.595  (m)                       GP(2002.00)    
 JV6709  ELLIP H (09/18/02)   89.610  (m)                       GP(       ) 4 2
 JV6709  NAD 83(1991)-  39 33 31.25766(N)    076 12 03.82287(W) AD(       ) 1
 JV6709  ELLIP H (01/27/92)   89.599  (m)                       GP(       ) 4 1
 JV6709  NAD 83(1986)-  39 33 31.25094(N)    076 12 03.82924(W) AD(       ) 1
 JV6709  NGVD 29 (06/18/91)  122.8    (m)  UNKNOWN  model used  GPS OBS        
 JV6709
 JV6709.Superseded values are not recommended for survey control.
 JV6709
 JV6709.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6709.See file dsdata.pdf to determine how the superseded data were derived.
 JV6709
 JV6709_MARKER: DZ = AZIMUTH MARK DISK
 JV6709_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6709_STAMPING: 26 AIRPORT 1989
 JV6709_MARK LOGO: MD-025
 JV6709_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6709_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6709+STABILITY: SURFACE MOTION
 JV6709_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6709+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6709
 JV6709  HISTORY     - Date     Condition        Report By
 JV6709  HISTORY     - 1989     MONUMENTED       RDA
 JV6709
 JV6709                          STATION DESCRIPTION
 JV6709
 JV6709'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6709'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTHWEST ALONG
 JV6709'CARSINS RUN ROAD TO THE MARK ON THE LEFT.
 JV6709'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6709'ABOUT 1 INCH BELOW GROUND STAMPED 26 AIRPORT 1989.  THE MARK IS 64.4
 JV6709'FEET NORTHEAST FROM A 36 INCH LOCUST TREE, 148.5 FEET NORTH FROM AN 8
 JV6709'INCH CEDAR TREE, 6.8 FEET EAST FROM THE EAST EDGE OF PAVEMENT OF
 JV6709'CARSINS RUN ROAD AND 2093.65 FEET FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4422 ***********************************************************************
 JV4422  DESIGNATION -  AIRPORT BCN MONTGOMERY CO APT
 JV4422  PID         -  JV4422
 JV4422  STATE/COUNTY-  MD/MONTGOMERY
 JV4422  COUNTRY     -  US
 JV4422  USGS QUAD   -  GAITHERSBURG (2016)
 JV4422
 JV4422                         *CURRENT SURVEY CONTROL
 JV4422  ______________________________________________________________________
 JV4422* NAD 83(1993) POSITION- 39 10 06.00922(N) 077 09 27.48997(W)   ADJUSTED
 JV4422  ______________________________________________________________________
 JV4422  GEOID HEIGHT    -        -31.745 (meters)                     GEOID18
 JV4422  LAPLACE CORR    -         -0.08  (seconds)                    DEFLEC18
 JV4422  HORZ ORDER      -  THIRD
 JV4422
 JV4422.This mark is at Montgomery Co Airpark  (GAI)
 JV4422
 JV4422.The horizontal coordinates were established by classical geodetic methods
 JV4422.and adjusted by the National Geodetic Survey in November 1994.
 JV4422
 JV4422.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4422.GEOID18 height accuracy estimate available here.
 JV4422
 JV4422.Click photographs - Photos may exist for this station.
 JV4422
 JV4422.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4422
 JV4422. The following values were computed from the NAD 83(1993) position.
 JV4422
 JV4422;                    North         East     Units Scale Factor Converg.
 JV4422;SPC MD       -   166,705.323   386,377.480   MT  0.99996285   -0 05 56.2
 JV4422;SPC MD       -   546,932.38  1,267,640.12   sFT  0.99996285   -0 05 56.2
 JV4422;UTM  18      - 4,337,674.575   313,601.014   MT  1.00002783   -1 21 47.4
 JV4422
 JV4422_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1360137674(NAD 83)
 JV4422
 JV4422                          SUPERSEDED SURVEY CONTROL
 JV4422
 JV4422  NAD 83(1991)-  39 10 06.00892(N)    077 09 27.48997(W) AD(       ) 3
 JV4422  NAD 83(1986)-  39 10 06.00877(N)    077 09 27.50023(W) AD(       ) 3
 JV4422  NAD 27      -  39 10 05.62275(N)    077 09 28.56851(W) AD(       ) 3
 JV4422
 JV4422.Superseded values are not recommended for survey control.
 JV4422
 JV4422.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4422.See file dsdata.pdf to determine how the superseded data were derived.
 JV4422
 JV4422_MARKER: 21 = AIRPORT BEACON
 JV4422_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4422+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4422
 JV4422  HISTORY     - Date     Condition        Report By
 JV4422  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV4422  HISTORY     - 1983     GOOD             USPSQD
 JV4422  HISTORY     - 19911107 GOOD             NGS
 JV4422  HISTORY     - 20031102 GOOD             USPSQD
 JV4422  HISTORY     - 20050303 GOOD             USPSQD
 JV4422
 JV4422                          STATION DESCRIPTION
 JV4422
 JV4422'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV4422'THE STATION IS THE REVOLVING LIGHT OF THE MONTGOMERY COUNTY
 JV4422'AIRPORT BEACON, MOUNTED ON THE SOUTHWEST CORNER OF A CONCRETE
 JV4422'BLOCK BUILDING, LOCATED 0.1 MILE SOUTHWEST OF THE INTERSECTION
 JV4422'OF STATE HIGHWAY 124 AND AIR PARK ROAD AND AT 18960 LAYTONSVILLE
 JV4422'ROAD.  THE OVERALL HEIGHT IS 23 FEET.
 JV4422
 JV4422                          STATION RECOVERY (1983)
 JV4422
 JV4422'RECOVERY NOTE BY US POWER SQUADRON 1983 (RWS)
 JV4422'NO MARKS STATION RECOVERED GOOD.
 JV4422'
 JV4422'DIRECTED TO POSITION BY AIRPORT MANAGER.  NO APPARENT CHANGES
 JV4422'FROM ORIGINAL DISCRIPTION.
 JV4422
 JV4422                          STATION RECOVERY (1991)
 JV4422
 JV4422'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV4422'STATION IS LOCATED ATOP THE SOUTH ONE OF THREE HANGARS AT THE WEST END
 JV4422'OF THE RAMP EAST OF THE TERMINAL BUILDING.  IT IS TWO-LIGHT BEACON
 JV4422'PAINTED RED ATOP A SMALL PLATFORM AT THE NORTH END OF THE BUILDING.
 JV4422'THE POINT INTERSECTED WAS THE SPINDLE BENEATH THE LIGHTS.
 JV4422
 JV4422                          STATION RECOVERY (2003)
 JV4422
 JV4422'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4422'RECOVERED IN GOOD CONDITION.
 JV4422
 JV4422                          STATION RECOVERY (2005)
 JV4422
 JV4422'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4422'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5891 ***********************************************************************
 JV5891  DESIGNATION -  AIRPORT BCN SUBURBAN APT
 JV5891  PID         -  JV5891
 JV5891  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5891  COUNTRY     -  US
 JV5891  USGS QUAD   -  LAUREL (2016)
 JV5891
 JV5891                         *CURRENT SURVEY CONTROL
 JV5891  ______________________________________________________________________
 JV5891* NAD 83(1991) POSITION- 39 05 20.97779(N) 076 45 20.19941(W)   ADJUSTED
 JV5891  ______________________________________________________________________
 JV5891  GEOID HEIGHT    -        -32.519 (meters)                     GEOID18
 JV5891  LAPLACE CORR    -         -5.40  (seconds)                    DEFLEC18
 JV5891  HORZ ORDER      -  THIRD
 JV5891
 JV5891.The horizontal coordinates were established by classical geodetic methods
 JV5891.and adjusted by the National Geodetic Survey in January 1992.
 JV5891
 JV5891.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5891.GEOID18 height accuracy estimate available here.
 JV5891
 JV5891.Click photographs - Photos may exist for this station.
 JV5891
 JV5891.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5891
 JV5891. The following values were computed from the NAD 83(1991) position.
 JV5891
 JV5891;                    North         East     Units Scale Factor Converg.
 JV5891;SPC MD       -   157,932.328   421,143.010   MT  0.99995676   +0 09 12.2
 JV5891;SPC MD       -   518,149.65  1,381,700.03   sFT  0.99995676   +0 09 12.2
 JV5891;UTM  18      - 4,328,137.892   348,164.624   MT  0.99988387   -1 06 25.8
 JV5891
 JV5891_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4816428137(NAD 83)
 JV5891
 JV5891                          SUPERSEDED SURVEY CONTROL
 JV5891
 JV5891  NAD 83(1986)-  39 05 20.97520(N)    076 45 20.20990(W) AD(       ) 3
 JV5891  NAD 27      -  39 05 20.59009(N)    076 45 21.31348(W) AD(       ) 3
 JV5891
 JV5891.Superseded values are not recommended for survey control.
 JV5891
 JV5891.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5891.See file dsdata.pdf to determine how the superseded data were derived.
 JV5891
 JV5891_MARKER: 21 = AIRPORT BEACON
 JV5891_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5891+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2003
 JV5891
 JV5891  HISTORY     - Date     Condition        Report By
 JV5891  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV5891  HISTORY     - 1983     GOOD             USPSQD
 JV5891  HISTORY     - 20030930 GOOD             USPSQD
 JV5891
 JV5891                          STATION DESCRIPTION
 JV5891
 JV5891'DESCRIBED BY US POWER SQUADRON 1983 (WAY)
 JV5891'STATION RECOVERED GOOD.
 JV5891'
 JV5891'TO REACH FROM INTERSECTION OF MD RT 32 AND RT 198 GO EASTERLY
 JV5891'ON RT 198 (MAPES RD) TO OBRIEN RD APPROX 1/3 MILE.  TURN SE ON
 JV5891'OBRIEN APPROX 1/4 MILE TO AIRPORT DRIVE SOUTH ON AIRPORT DRIVE CROSS
 JV5891'B AND O RAILROAD TRACKS BEACON IS IN PINE THICKET ON LEFT VISIBLE
 JV5891'ONLY FROM HIGHER ELEVATIONS BECAUSE OF PINE TREES SURROUNDING
 JV5891'IT.
 JV5891
 JV5891                          STATION RECOVERY (2003)
 JV5891
 JV5891'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5891'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4361 ***********************************************************************
 JV4361  DESIGNATION -  AIRWAY BCN FLASH RED AND WHITE
 JV4361  PID         -  JV4361
 JV4361  STATE/COUNTY-  MD/MONTGOMERY
 JV4361  COUNTRY     -  US
 JV4361  USGS QUAD   -  ROCKVILLE (2016)
 JV4361
 JV4361                         *CURRENT SURVEY CONTROL
 JV4361  ______________________________________________________________________
 JV4361* NAD 83(1993) POSITION- 39 03 55.49674(N) 077 07 39.11762(W)   ADJUSTED
 JV4361  ______________________________________________________________________
 JV4361  GEOID HEIGHT    -        -31.760 (meters)                     GEOID18
 JV4361  LAPLACE CORR    -         -2.55  (seconds)                    DEFLEC18
 JV4361  HORZ ORDER      -  THIRD
 JV4361
 JV4361.The horizontal coordinates were established by classical geodetic methods
 JV4361.and adjusted by the National Geodetic Survey in November 1994.
 JV4361
 JV4361.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4361.GEOID18 height accuracy estimate available here.
 JV4361
 JV4361.Click photographs - Photos may exist for this station.
 JV4361
 JV4361.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4361
 JV4361. The following values were computed from the NAD 83(1993) position.
 JV4361
 JV4361;                    North         East     Units Scale Factor Converg.
 JV4361;SPC MD       -   155,275.784   388,962.980   MT  0.99995531   -0 04 48.2
 JV4361;SPC MD       -   509,433.97  1,276,122.71   sFT  0.99995531   -0 04 48.2
 JV4361;UTM  18      - 4,326,190.107   315,934.176   MT  1.00001719   -1 20 28.2
 JV4361
 JV4361_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1593426190(NAD 83)
 JV4361
 JV4361                          SUPERSEDED SURVEY CONTROL
 JV4361
 JV4361  NAD 83(1991)-  39 03 55.49677(N)    077 07 39.11893(W) AD(       ) 3
 JV4361  NAD 83(1986)-  39 03 55.49586(N)    077 07 39.12852(W) AD(       ) 3
 JV4361  NAD 27      -  39 03 55.12708(N)    077 07 40.18603(W) AD(       ) 3
 JV4361
 JV4361.Superseded values are not recommended for survey control.
 JV4361
 JV4361.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4361.See file dsdata.pdf to determine how the superseded data were derived.
 JV4361
 JV4361_MARKER: 22 = AIRWAY BEACON
 JV4361
 JV4361  HISTORY     - Date     Condition        Report By
 JV4361  HISTORY     - 1933     FIRST OBSERVED   CGS
 JV4361
 JV4361                          STATION DESCRIPTION
 JV4361
 JV4361'NO DESCRIPTIVE TEXT AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9388 ***********************************************************************
 DR9388  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9388  DESIGNATION -  AIRY
 DR9388  PID         -  DR9388
 DR9388  STATE/COUNTY-  MD/KENT
 DR9388  COUNTRY     -  US
 DR9388  USGS QUAD   -  CHESTERTOWN (2017)
 DR9388
 DR9388                         *CURRENT SURVEY CONTROL
 DR9388  ______________________________________________________________________
 DR9388* NAD 83(2011) POSITION- 39 12 50.45925(N) 076 05 30.97942(W)   ADJUSTED
 DR9388* NAD 83(2011) ELLIP HT-   -15.711 (meters)        (09/18/23)   ADJUSTED
 DR9388* NAD 83(2011) EPOCH   -  2010.00
 DR9388* NAVD 88 ORTHO HEIGHT -    17.68  (meters)       58.0   (feet) GPS OBS
 DR9388  ______________________________________________________________________
 DR9388  GEOID HEIGHT    -        -33.407 (meters)                     GEOID18
 DR9388  NAD 83(2011) X  -  1,189,403.037 (meters)                     COMP
 DR9388  NAD 83(2011) Y  - -4,803,256.568 (meters)                     COMP
 DR9388  NAD 83(2011) Z  -  4,010,743.781 (meters)                     COMP
 DR9388  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 DR9388
 DR9388  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9388  Standards:
 DR9388         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9388            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9388  -------------------------------------------------------------------
 DR9388  NETWORK    0.52   1.22           0.23   0.19   0.62     -0.03456709
 DR9388  -------------------------------------------------------------------
 DR9388  Click here for local accuracies and other accuracy information.
 DR9388
 DR9388.The horizontal coordinates were established by GPS observations
 DR9388.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9388
 DR9388.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9388.been affixed to the stable North American tectonic plate. See 
 DR9388.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9388
 DR9388.The horizontal coordinates are valid at the epoch date displayed above
 DR9388.which is a decimal equivalence of Year/Month/Day.
 DR9388
 DR9388.The orthometric height was determined by GPS observations and a
 DR9388.high-resolution geoid model using precise GPS observation and
 DR9388.processing techniques.
 DR9388
 DR9388.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9388.GEOID18 height accuracy estimate available here.
 DR9388
 DR9388.Click photographs - Photos may exist for this station.
 DR9388
 DR9388.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9388
 DR9388.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9388
 DR9388.The ellipsoidal height was determined by GPS observations
 DR9388.and is referenced to NAD 83.
 DR9388
 DR9388. The following values were computed from the NAD 83(2011) position.
 DR9388
 DR9388;                    North         East     Units Scale Factor Converg.
 DR9388;SPC MD       -   172,154.835   478,420.698   MT  0.99996723   +0 34 11.7
 DR9388;SPC MD       -   564,811.32  1,569,618.57   sFT  0.99996723   +0 34 11.7
 DR9388;UTM  18      - 4,341,094.605   405,731.456   MT  0.99970942   -0 41 25.4
 DR9388
 DR9388!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9388!SPC MD       -   1.00000246  x   0.99996723  =   0.99996969
 DR9388!UTM  18      -   1.00000246  x   0.99970942  =   0.99971188
 DR9388
 DR9388_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0573141094(NAD 83)
 DR9388
 DR9388                          SUPERSEDED SURVEY CONTROL
 DR9388
 DR9388.No superseded survey control is available for this station.
 DR9388
 DR9388_MARKER: DD = SURVEY DISK
 DR9388_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9388_STAMPING: AIRY 2021
 DR9388_MARK LOGO: MD-029
 DR9388_PROJECTION: FLUSH
 DR9388_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9388_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9388+STABILITY: SURFACE MOTION
 DR9388_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9388+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9388
 DR9388  HISTORY     - Date     Condition        Report By
 DR9388  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9388  HISTORY     - 20250731 GOOD             PROFLN
 DR9388
 DR9388                          STATION DESCRIPTION
 DR9388
 DR9388'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9388'THE MARK IS LOCATED ABOUT 1.4 MI (2.3 KM) WEST-NORTHWEST OF
 DR9388'CHESTERTOWN, 4.3 MI (6.9 KM) EAST OF FAIRLEE, 4.2 MI (6.8 KM) SOUTH OF
 DR9388'WORTON AND IN THE TOWN OF CHESTERTOWN, MD.
 DR9388'
 DR9388'TO REACH THE MARK FROM THE JUNCTION OF MD 544 AND MD 213, GO
 DR9388'WEST-NORTHWEST ON MD 213 FOR 2.02 MI (3.25 KM) TO AN INTERSECTION.
 DR9388'TURN LEFT AND GO SOUTHWEST ON SPRING AVENUE FOR 0.14 MI (0.23 KM) TO
 DR9388'AN INTERSECTION.  TURN RIGHT AND GO NORTHWEST ON HIGH ST FOR 0.88 MI
 DR9388'(1.42 KM) TO AN INTERSECTION.  TURN RIGHT AND GO NORTHEAST ON AT THE
 DR9388'TRAFFIC CIRCLE, TAKE THE SECOND EXIT ONTO MD 20 W/HIGH ST FOR 0.80 MI
 DR9388'(1.29 KM) TO AN INTERSECTION.  TURN LEFT AND GO SOUTH ON AIRY HILL
 DR9388'ROAD FOR 0.07 MI (0.11 KM) TO THE MARK ON THE RIGHT.
 DR9388'
 DR9388'THE MARK IS 219.8 FT (67.0 M) NORTH OF A UTILITY POLE NUMBERED
 DR9388'33111-24151, 42.1 FT (12.8 M) SOUTHWEST OF A UTILITY POLE NUMBERED DP
 DR9388'AND L 33109-24176, 31.0 FT (9.4 M) SOUTH OF A GUY ANCHOR FOR UTILITY
 DR9388'POLE NUMBERED DP AND L 33103-24175, 30.5 FT (9.3 M) SOUTH OF A UTILITY
 DR9388'POLE NUMBERED DP AND L 33103-24175, 14.3 FT (4.4 M) WEST OF THE
 DR9388'CENTERLINE OF AIRY HILL ROAD SET IN THE TOP OF A 12-IN (30 CM) ROUND
 DR9388'CONCRETE POST AND ABOUT LEVEL WITH THE GROUND.
 DR9388
 DR9388                          STATION RECOVERY (2025)
 DR9388
 DR9388'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9388'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9389 ***********************************************************************
 DR9389  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9389  DESIGNATION -  AIRY AZ MK
 DR9389  PID         -  DR9389
 DR9389  STATE/COUNTY-  MD/KENT
 DR9389  COUNTRY     -  US
 DR9389  USGS QUAD   -  CHESTERTOWN (2017)
 DR9389
 DR9389                         *CURRENT SURVEY CONTROL
 DR9389  ______________________________________________________________________
 DR9389* NAD 83(2011) POSITION- 39 12 41.04723(N) 076 05 30.21660(W)   ADJUSTED
 DR9389* NAD 83(2011) ELLIP HT-   -15.739 (meters)        (09/18/23)   ADJUSTED
 DR9389* NAD 83(2011) EPOCH   -  2010.00
 DR9389* NAVD 88 ORTHO HEIGHT -    17.66  (meters)       57.9   (feet) GPS OBS
 DR9389  ______________________________________________________________________
 DR9389  GEOID HEIGHT    -        -33.411 (meters)                     GEOID18
 DR9389  NAD 83(2011) X  -  1,189,464.903 (meters)                     COMP
 DR9389  NAD 83(2011) Y  - -4,803,430.268 (meters)                     COMP
 DR9389  NAD 83(2011) Z  -  4,010,518.873 (meters)                     COMP
 DR9389  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 DR9389
 DR9389  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9389  Standards:
 DR9389         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9389            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9389  -------------------------------------------------------------------
 DR9389  NETWORK    0.53   1.25           0.23   0.20   0.64     -0.03847157
 DR9389  -------------------------------------------------------------------
 DR9389  Click here for local accuracies and other accuracy information.
 DR9389
 DR9389.The horizontal coordinates were established by GPS observations
 DR9389.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9389
 DR9389.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9389.been affixed to the stable North American tectonic plate. See 
 DR9389.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9389
 DR9389.The horizontal coordinates are valid at the epoch date displayed above
 DR9389.which is a decimal equivalence of Year/Month/Day.
 DR9389
 DR9389.The orthometric height was determined by GPS observations and a
 DR9389.high-resolution geoid model using precise GPS observation and
 DR9389.processing techniques.
 DR9389
 DR9389.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9389.GEOID18 height accuracy estimate available here.
 DR9389
 DR9389.Click photographs - Photos may exist for this station.
 DR9389
 DR9389.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9389
 DR9389.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9389
 DR9389.The ellipsoidal height was determined by GPS observations
 DR9389.and is referenced to NAD 83.
 DR9389
 DR9389. The following values were computed from the NAD 83(2011) position.
 DR9389
 DR9389;                    North         East     Units Scale Factor Converg.
 DR9389;SPC MD       -   171,864.786   478,441.884   MT  0.99996696   +0 34 12.2
 DR9389;SPC MD       -   563,859.72  1,569,688.08   sFT  0.99996696   +0 34 12.2
 DR9389;UTM  18      - 4,340,804.235   405,746.254   MT  0.99970938   -0 41 24.8
 DR9389
 DR9389!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9389!SPC MD       -   1.00000247  x   0.99996696  =   0.99996943
 DR9389!UTM  18      -   1.00000247  x   0.99970938  =   0.99971185
 DR9389
 DR9389_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0574640804(NAD 83)
 DR9389
 DR9389                          SUPERSEDED SURVEY CONTROL
 DR9389
 DR9389.No superseded survey control is available for this station.
 DR9389
 DR9389_MARKER: DD = SURVEY DISK
 DR9389_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9389_STAMPING: AIRY AZ 2021
 DR9389_MARK LOGO: MD-029
 DR9389_PROJECTION: FLUSH
 DR9389_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9389_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9389+STABILITY: SURFACE MOTION
 DR9389_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9389+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9389
 DR9389  HISTORY     - Date     Condition        Report By
 DR9389  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9389  HISTORY     - 20250731 GOOD             PROFLN
 DR9389
 DR9389                          STATION DESCRIPTION
 DR9389
 DR9389'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9389'THE MARK IS LOCATED ABOUT 1.3 MI (2.1 KM) WEST OF CHESTERTOWN, 4.4 MI
 DR9389'(7.1 KM) EAST OF FAIRLEE, 4.3 MI (6.9 KM) SOUTH OF WORTON AND IN THE
 DR9389'TOWN OF CHESTERTOWN, MD.
 DR9389'
 DR9389'TO REACH THE MARK FROM THE JUNCTION OF MD 544 AND MD 213, GO
 DR9389'WEST-NORTHWEST ON MD 213 FOR 2.02 MI (3.25 KM) TO AN INTERSECTION.
 DR9389'TURN LEFT AND GO SOUTHWEST ON SPRING AVENUE FOR 0.14 MI (0.23 KM) TO
 DR9389'AN INTERSECTION.  TURN RIGHT AND GO NORTHWEST ON HIGH ST FOR 0.88 MI
 DR9389'(1.42 KM) TO AN INTERSECTION.  TURN RIGHT AND GO NORTHEAST ON AT THE
 DR9389'TRAFFIC CIRCLE, TAKE THE SECOND EXIT ONTO MD 20 W/HIGH ST FOR 0.80 MI
 DR9389'(1.29 KM) TO AN INTERSECTION.  TURN LEFT AND GO SOUTH ON AIRY HILL
 DR9389'ROAD FOR 0.26 MI (0.42 KM) TO THE MARK ON THE RIGHT.
 DR9389'
 DR9389'THE MARK IS 131.7 FT (40.1 M) SOUTH OF THE CENTERLINE OF A GRAVEL
 DR9389'DRIVEWAY, 33.9 FT (10.3 M) WEST-NORTHWEST OF A UTILITY POLE NUMBERED
 DR9389'DP AND L 33113-24076, 14.6 FT (4.5 M) NORTHEAST OF A GUY ANCHOR OF
 DR9389'POWER POLE NUMBERED DP AND L33107-24075, 13.9 FT (4.2 M) WEST OF THE
 DR9389'CENTERLINE OF AIRY HILL ROAD, 13.6 FT (4.1 M) NORTH OF A UTILITY POLE
 DR9389'NUMBERED DP AND L33107-24075 SET IN THE TOP OF A 12-IN (30 CM) ROUND
 DR9389'CONCRETE POST AND ABOUT LEVEL WITH THE GROUND.
 DR9389
 DR9389                          STATION RECOVERY (2025)
 DR9389
 DR9389'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9389'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0824 ***********************************************************************
 HV0824  DESIGNATION -  AJ 120
 HV0824  PID         -  HV0824
 HV0824  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0824  COUNTRY     -  US
 HV0824  USGS QUAD   -  BRANDYWINE (2016)
 HV0824
 HV0824                         *CURRENT SURVEY CONTROL
 HV0824  ______________________________________________________________________
 HV0824* NAD 83(1986) POSITION- 38 43 38.     (N) 076 50 11.     (W)   SCALED
 HV0824* NAVD 88 ORTHO HEIGHT -    70.503 (meters)      231.31  (feet) ADJUSTED
 HV0824  ______________________________________________________________________
 HV0824  GEOID HEIGHT    -        -32.853 (meters)                     GEOID18
 HV0824  DYNAMIC HEIGHT  -         70.463 (meters)      231.18  (feet) COMP
 HV0824  MODELED GRAVITY -    980,053.3   (mgal)                       NAVD 88
 HV0824
 HV0824  VERT ORDER      -  FIRST     CLASS II
 HV0824
 HV0824.The horizontal coordinates were scaled from a map and have
 HV0824.an estimated accuracy of +/- 6 seconds.
 HV0824
 HV0824.The orthometric height was determined by differential leveling and
 HV0824.adjusted by the NATIONAL GEODETIC SURVEY
 HV0824.in June 1991.
 HV0824
 HV0824.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0824.GEOID18 height accuracy estimate available here.
 HV0824
 HV0824.Click photographs - Photos may exist for this station.
 HV0824
 HV0824.The dynamic height is computed by dividing the NAVD 88
 HV0824.geopotential number by the normal gravity value computed on the
 HV0824.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0824.degrees latitude (g = 980.6199 gals.).
 HV0824
 HV0824.The modeled gravity was interpolated from observed gravity values.
 HV0824
 HV0824;                    North         East    Units  Estimated Accuracy
 HV0824;SPC MD       -   117,740.      414,230.      MT  (+/- 180 meters Scaled)
 HV0824
 HV0824_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH403881(NAD 83)
 HV0824
 HV0824                          SUPERSEDED SURVEY CONTROL
 HV0824
 HV0824  NGVD 29 (11/26/84)   70.734  (m)          232.07   (f) ADJUSTED    1 2
 HV0824
 HV0824.Superseded values are not recommended for survey control.
 HV0824
 HV0824.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0824.See file dsdata.pdf to determine how the superseded data were derived.
 HV0824
 HV0824_MARKER: DB = BENCH MARK DISK
 HV0824_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0824+WITH SETTING: INTO GROUND
 HV0824_STAMPING: AJ 120 1971
 HV0824_MARK LOGO: CGS
 HV0824_PROJECTION: RECESSED 8 CENTIMETERS
 HV0824_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0824+STABILITY: SURFACE MOTION
 HV0824
 HV0824  HISTORY     - Date     Condition        Report By
 HV0824  HISTORY     - 1971     MONUMENTED       NGS
 HV0824  HISTORY     - 1975     GOOD             NGS
 HV0824
 HV0824                          STATION DESCRIPTION
 HV0824
 HV0824'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0824'0.8 MI SW FROM CHELTENHAM.
 HV0824'ABOUT 0.85 MILE SOUTHWEST ALONG U.S. HIGHWAY 301 FROM THE
 HV0824'INTERSECTION OF SURRATTS ROAD AT CHELTENHAM, AT THE FIRST HIGH
 HV0824'TOWER TENSION LINE NORTHWEST OF THE CENTER LINE OF U.S. HIGH-WAY
 HV0824'301, 159 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 2.8
 HV0824'FEET NORTHEAST OF THE SOUTHEAST LEG OF THE TOWER, 30.5 FEET WEST
 HV0824'OF THE NORTHEAST LEG OF THE TOWER, AND ON THE TOP OF A 4 FOOT
 HV0824'COPPER COATED STEEL ROD 3 INCHES BELOW THE LEVEL OF THE GROUND
 HV0824'AND ATTACHED TO A METAL BASE PLATE.  THE ROD IS ENCASED IN A
 HV0824'METAL PIPE THAT IS FLUSH WITH THE GROUND.
 HV0824
 HV0824                          STATION RECOVERY (1975)
 HV0824
 HV0824'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0824'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5742 ***********************************************************************
 HV5742  DESIGNATION -  ALBERT
 HV5742  PID         -  HV5742
 HV5742  STATE/COUNTY-  MD/QUEEN ANNES
 HV5742  COUNTRY     -  US
 HV5742  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5742
 HV5742                         *CURRENT SURVEY CONTROL
 HV5742  ______________________________________________________________________
 HV5742* NAD 83(1991) POSITION- 38 52 08.98113(N) 076 10 09.77990(W)   ADJUSTED
 HV5742* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5742  ______________________________________________________________________
 HV5742  GEOID HEIGHT    -        -34.250 (meters)                     GEOID18
 HV5742  LAPLACE CORR    -         -4.40  (seconds)                    DEFLEC18
 HV5742  HORZ ORDER      -  THIRD
 HV5742
 HV5742.The horizontal coordinates were established by classical geodetic methods
 HV5742.and adjusted by the National Geodetic Survey in January 1992.
 HV5742
 HV5742.The orthometric height was scaled from a topographic map.
 HV5742
 HV5742.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5742.GEOID18 height accuracy estimate available here.
 HV5742
 HV5742.Click photographs - Photos may exist for this station.
 HV5742
 HV5742.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5742
 HV5742. The following values were computed from the NAD 83(1991) position.
 HV5742
 HV5742;                    North         East     Units Scale Factor Converg.
 HV5742;SPC MD       -   133,809.910   472,081.056   MT  0.99994985   +0 31 16.8
 HV5742;SPC MD       -   439,008.01  1,548,819.26   sFT  0.99994985   +0 31 16.8
 HV5742;UTM  18      - 4,302,907.160   398,553.313   MT  0.99972673   -0 44 02.0
 HV5742
 HV5742!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5742!SPC MD       -   1.00000541  x   0.99994985  =   0.99995526
 HV5742!UTM  18      -   1.00000541  x   0.99972673  =   0.99973214
 HV5742
 HV5742_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9855302907(NAD 83)
 HV5742
 HV5742|---------------------------------------------------------------------|
 HV5742| PID    Reference Object                     Distance      Geod. Az  |
 HV5742|                                                           dddmmss.s |
 HV5742| HV5685 LE SEUR                             249.719 METERS 00103     |
 HV5742| HV5741 BALDWINS                            393.763 METERS 05450     |
 HV5742|---------------------------------------------------------------------|
 HV5742
 HV5742                          SUPERSEDED SURVEY CONTROL
 HV5742
 HV5742  NAD 83(1986)-  38 52 08.97659(N)    076 10 09.79306(W) AD(       ) 3
 HV5742  NAD 27      -  38 52 08.53700(N)    076 10 10.97700(W) AD(       ) 3
 HV5742  USSD        -  38 52 08.93000(N)    076 10 10.74900(W) AD(       ) 3
 HV5742
 HV5742.Superseded values are not recommended for survey control.
 HV5742
 HV5742.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5742.See file dsdata.pdf to determine how the superseded data were derived.
 HV5742
 HV5742_MARKER: Z = SEE DESCRIPTION
 HV5742_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5742_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5742+STABILITY: SURFACE MOTION
 HV5742
 HV5742  HISTORY     - Date     Condition        Report By
 HV5742  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5742  HISTORY     - 1940     GOOD             CGS
 HV5742  HISTORY     - 1961     GOOD             CGS
 HV5742
 HV5742                          STATION DESCRIPTION
 HV5742
 HV5742'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5742'STATION IS ON WYE ISLAND, ON THE NORTHWESTERN SHORE OF THE BRANCH
 HV5742'OF WYE RIVER BOUNDING WYE ISLAND ON THE S, ON A POINT ABOUT 1-1/4
 HV5742'MILES ENE OF N END OF BRUFFS ISLAND, AND OPPOSITE ENRANCE TO LLOYD
 HV5742'CREEK.  STATION IS ON A MARSH POINT, ABOUT 1 FOOT ABOVE HIGH
 HV5742'WATER, 17 YARDS NW OF SHORE, 28 YARDS E OF SHORE, 35 YARDS S OF
 HV5742'SHORE, AND 75 YARDS NNE OF EXTREME END OF POINT.  STATION IS
 HV5742'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5742'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5742'LONG WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5742'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUBSURFACE MARK IS
 HV5742'CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES
 HV5742'BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV5742'POINTS OF REFERENCE ARE AS FOLLOWS--FRONT PEAK OF BOATHOUSE, 1-1/4
 HV5742'MILES, S 52 DEG 14 MIN W.  PEAK BETWEEN TWO CHIMNEYS OF HOUSE,
 HV5742'1-3/4 MILES, N 89 DEG 16 MIN W.  LEFT PEAK OF HOUSE, 7/8 MILE, N
 HV5742'84 DEG 11 MIN W.  PEAK OF HOUSE, 3/4 MILE, N 11 DEG 9 MIN W.
 HV5742'BALDWIN WINDMILL, 3/8 MILE, N 66 DEG 15 MIN E.  FLAGSTAFF ON
 HV5742'BALDWIN BOATHOUSE, 400 YARDS, N 69 DEG 3 MIN E.  WINDMILL ON
 HV5742'WOODEN TOWER, 1 MILE, S 53 DEG 40 MIN E.  PEAK OF HOUSE WITH
 HV5742'SEVERAL CHIMNEYS, 1 MILE, S 51 DEG 48 MIN E.  CHIMNEY OUTSIDE NEAR
 HV5742'END OF OLD HOUSE, 1 MILE, S 8 DEG 51 MIN E.
 HV5742
 HV5742                          STATION RECOVERY (1940)
 HV5742
 HV5742'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5742'STATION MARK RECOVERED IN GOOD CONDITION.
 HV5742'
 HV5742'ON WYE ISLAND, ON THE NORTHWESTERN SHORE OF THE BRANCH OF WYE
 HV5742'RIVER BOUNDING WYE ISLAND ON THE S, ON A POINT ABOUT 1-1/4 MILES
 HV5742'ENE OF N END OF BRUFFS ISLAND, AND OPPOSITE ENTRANCE TO LLOYD
 HV5742'CREEK.  STATION IS ON A MARSH POINT COVERED WITH WATER AT HIGH
 HV5742'TIDE, 57 YARDS N OF EXTREME POINT OF MARSH, 16 YARDS W OF POINT OF
 HV5742'MARSH ON CREEK SIDE, 21 YARDS E OF SHORE.
 HV5742
 HV5742                          STATION RECOVERY (1961)
 HV5742
 HV5742'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5742'STATION RECOVERED WITH THE TOP CRACKED BUT STILL FIRM IN THE
 HV5742'GROUND.  THE DESCRIPTION IS ADEQUATE WITH THE FOLLOWING
 HV5742'ADDITION--STATION IS NOW 15 FT. E OF SHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8281 ***********************************************************************
 HV8281  DESIGNATION -  ALBION GPS E7
 HV8281  PID         -  HV8281
 HV8281  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8281  COUNTRY     -  US
 HV8281  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8281
 HV8281                         *CURRENT SURVEY CONTROL
 HV8281  ______________________________________________________________________
 HV8281* NAD 83(2011) POSITION- 38 58 18.63474(N) 076 56 02.52099(W)   ADJUSTED
 HV8281* NAD 83(2011) ELLIP HT-   -12.414 (meters)        (06/27/12)   ADJUSTED
 HV8281* NAD 83(2011) EPOCH   -  2010.00
 HV8281* NAVD 88 ORTHO HEIGHT -    19.7   (meters)       65.    (feet) VERTCON3
 HV8281  ______________________________________________________________________
 HV8281  GEOID HEIGHT    -        -32.152 (meters)                     GEOID18
 HV8281  NAD 83(2011) X  -  1,122,515.353 (meters)                     COMP
 HV8281  NAD 83(2011) Y  - -4,836,735.162 (meters)                     COMP
 HV8281  NAD 83(2011) Z  -  3,989,879.484 (meters)                     COMP
 HV8281  LAPLACE CORR    -         -4.91  (seconds)                    DEFLEC18
 HV8281
 HV8281  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8281  Standards:
 HV8281         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8281            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8281  -------------------------------------------------------------------
 HV8281  NETWORK    2.04   3.67           0.90   0.75   1.87     -0.18339201
 HV8281  -------------------------------------------------------------------
 HV8281  Click here for local accuracies and other accuracy information.
 HV8281
 HV8281.The horizontal coordinates were established by GPS observations
 HV8281.and adjusted by the National Geodetic Survey in June 2012.
 HV8281
 HV8281.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8281.been affixed to the stable North American tectonic plate. See 
 HV8281.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8281
 HV8281.The horizontal coordinates are valid at the epoch date displayed above
 HV8281.which is a decimal equivalence of Year/Month/Day.
 HV8281
 HV8281.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8281.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8281
 HV8281.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8281.GEOID18 height accuracy estimate available here.
 HV8281
 HV8281.Click photographs - Photos may exist for this station.
 HV8281
 HV8281.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8281
 HV8281.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8281
 HV8281.The ellipsoidal height was determined by GPS observations
 HV8281.and is referenced to NAD 83.
 HV8281
 HV8281. The following values were computed from the NAD 83(2011) position.
 HV8281
 HV8281;                    North         East     Units Scale Factor Converg.
 HV8281;SPC MD       -   144,882.567   405,716.416   MT  0.99995125   +0 02 29.0
 HV8281;SPC MD       -   475,335.56  1,331,087.94   sFT  0.99995125   +0 02 29.0
 HV8281;UTM  18      - 4,315,430.834   332,455.564   MT  0.99994566   -1 13 00.0
 HV8281
 HV8281!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8281!SPC MD       -   1.00000195  x   0.99995125  =   0.99995320
 HV8281!UTM  18      -   1.00000195  x   0.99994566  =   0.99994761
 HV8281
 HV8281_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3245515430(NAD 83)
 HV8281
 HV8281                          SUPERSEDED SURVEY CONTROL
 HV8281
 HV8281  NAD 83(2007)-  38 58 18.63535(N)    076 56 02.52180(W) AD(2002.00) 0
 HV8281  ELLIP H (02/10/07)  -12.401  (m)                       GP(2002.00)    
 HV8281  ELLIP H (09/18/02)  -12.402  (m)                       GP(       ) 4 2
 HV8281  ELLIP H (11/14/94)  -12.409  (m)                       GP(       ) 4 2
 HV8281  NAD 83(1991)-  38 58 18.63528(N)    076 56 02.52139(W) AD(       ) 1
 HV8281  NAD 83(1986)-  38 58 18.63400(N)    076 56 02.53213(W) AD(       ) 1
 HV8281  NGVD 29 (05/23/89)   20.0    (m)  RAPSU86  model used  GPS OBS        
 HV8281
 HV8281.Superseded values are not recommended for survey control.
 HV8281
 HV8281.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8281.See file dsdata.pdf to determine how the superseded data were derived.
 HV8281
 HV8281_MARKER: A = ALUMINUM MARKER
 HV8281_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 HV8281+WITH SETTING: INFORMATION.
 HV8281_STAMPING: ALBION GPS E7
 HV8281_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8281_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8281_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8281+SATELLITE: SATELLITE OBSERVATIONS - 1988
 HV8281
 HV8281  HISTORY     - Date     Condition        Report By
 HV8281  HISTORY     - 1988     MONUMENTED       DEWDAV
 HV8281  HISTORY     - 20031113 GOOD             GEOCAC
 HV8281
 HV8281                          STATION DESCRIPTION
 HV8281
 HV8281'DESCRIBED BY DEWBERRY DAVIS 1988
 HV8281'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MD, IN THE CITY OF
 HV8281'COLLEGE PARK, 1 MILE SE OF THE UNIVERSITY ON MARYLAND.
 HV8281'TO REACH THE STATION FROM THE INTERSECTION OF EAST-WEST HIGHWAY AND
 HV8281'U.S. HIGHWAY 1, GO NORTH ON U.S.1 FOR O.5 MILE TO ALBION STREET ON THE
 HV8281'RIGHT, TURN RIGHT ON TO ALBION STREET AND GO EAST ON ALBION FOR 0.2
 HV8281'MILE TO WHERE THE ROAD TURNS SHARPLY NORTH.  THE STATION IS IN A
 HV8281'GRASSY AREA BETWEEN ALBION STREET AND RHODE ISAND AVENUE AT THE BEND
 HV8281'IN THE ROAD.
 HV8281'THE STATION MARK IS A 2.5 INCH ALUMINUM DISK STAMPED ---ALBION GPS-
 HV8281'E7---, FASTENED TO A BERNTSEN 3-D ALUMINUM MONUMENT AND RECESSED 1
 HV8281'INCH BELOW GROUND,  ENCASED IN A 5 INCH ROUND ALUMINUM MONUMENT BOX.
 HV8281'THE MARK IS 4 FEET NE OF THE SOUTHERLY OF THREE 4 INCH SQUARE POSTS,
 HV8281'AND 5 FEET SE OF THE MIDDLE POST.
 HV8281'REFERENCE MARK 1 IS A PK NAIL IN  PEPCO POLE  NUMBER 6854.  THE MARK
 HV8281'IS 23.97 FEET NORTH OF RM 1.
 HV8281'REFERENCE MARK 2 IS A PK NAIL SET IN PEPCO POLE NUMBER 818414-6156.
 HV8281'THE MARK IS 51.33 FEET ENE OF RM 2.
 HV8281'REFERENCE MARK 3 IS A PK NAIL IN PEPCO POLE NUMBER 818414-6965.  THE
 HV8281'MARK IS 71.73 FEET SSW OF RM 3.
 HV8281'TO REACH THE AZIMUTH MARK, CROSS OVER TO RHODE ISLAND AVENUE AND GO
 HV8281'NORTH FOR 0.5 MILE TO THE INTERSECTION OF GUILFORD STREET AND RHODE
 HV8281'ISLAND AVENUE AND THE AZIMUTH MARK IN THE MEDIAN BETWEEN THE LANES OF
 HV8281'RHODE ISLAND AVENUE.  THE MARK IS 22 FEET SOUTH OF THE SOUTH EDGE OF
 HV8281'PAVEMENT OF GUILFORD STREET, AND 7 FEET EAST OF THE EAST EDGE OF
 HV8281'PAVEMENT OF THE WEST LANE OF RHODE ISLAND AVENUE. THE MARK IS A 3.5
 HV8281'INCH UNSTAMPED METRO CONTROL SURVEY DISK SET IN CONCRETE 8 INCHES
 HV8281'BELOW GROUND, ENCASED IN A 6 INCH ROUND PVC MONUMENT BOX.  THE MARK IS
 HV8281'75.70 FEET NORTH OF PEPCO POLE NUMBER 818416-9032, 30.59 FEET WSW OF
 HV8281'POLE NUMBER 818416-9241, AND 22.48 FEET SSW OF C+P POLE NUMBER 1.
 HV8281
 HV8281                          STATION RECOVERY (2003)
 HV8281
 HV8281'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV8281'STATION DISK FOUND AS DESCRIBED. RM1 PK NAIL NOT FOUND. POLE 6854
 HV8281'FOUND AND IS ALSO LABELED 14475 ABC. DISTANCE FROM STATION TO RM1 NOT
 HV8281'VERIFIED. RM2 AND RM3 NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4802 ***********************************************************************
 JV4802  DESIGNATION -  ALDINO
 JV4802  PID         -  JV4802
 JV4802  STATE/COUNTY-  MD/HARFORD
 JV4802  COUNTRY     -  US
 JV4802  USGS QUAD   -  ABERDEEN (2016)
 JV4802
 JV4802                         *CURRENT SURVEY CONTROL
 JV4802  ______________________________________________________________________
 JV4802* NAD 83(1991) POSITION- 39 31 01.38834(N) 076 14 03.62413(W)   ADJUSTED
 JV4802* NAVD 88 ORTHO HEIGHT -   119.77  (+/-2cm)      392.9   (feet) VERTCON3
 JV4802  ______________________________________________________________________
 JV4802  GEOID HEIGHT    -        -33.000 (meters)                     GEOID18
 JV4802  LAPLACE CORR    -         -2.13  (seconds)                    DEFLEC18
 JV4802  HORZ ORDER      -  FIRST
 JV4802  VERT ORDER      -  THIRD ? (See Below)
 JV4802
 JV4802.The horizontal coordinates were established by classical geodetic methods
 JV4802.and adjusted by the National Geodetic Survey in January 1992.
 JV4802
 JV4802.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4802.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4802
 JV4802.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4802.GEOID18 height accuracy estimate available here.
 JV4802
 JV4802.The vertical order pertains to the NGVD 29 superseded value.
 JV4802
 JV4802.Click photographs - Photos may exist for this station.
 JV4802
 JV4802.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4802
 JV4802. The following values were computed from the NAD 83(1991) position.
 JV4802
 JV4802;                    North         East     Units Scale Factor Converg.
 JV4802;SPC MD       -   205,684.282   465,840.981   MT  1.00001242   +0 28 50.0
 JV4802;SPC MD       -   674,815.85  1,528,346.62   sFT  1.00001242   +0 28 50.0
 JV4802;UTM  18      - 4,374,884.288   393,897.019   MT  0.99973861   -0 47 07.8
 JV4802
 JV4802!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4802!SPC MD       -   0.99998639  x   1.00001242  =   0.99999881
 JV4802!UTM  18      -   0.99998639  x   0.99973861  =   0.99972500
 JV4802
 JV4802:                Primary Azimuth Mark                     Grid Az
 JV4802:SPC MD       -  MEIGS                                    059 43 54.2
 JV4802:UTM  18      -  MEIGS                                    060 59 52.0
 JV4802
 JV4802_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9389774884(NAD 83)
 JV4802
 JV4802|---------------------------------------------------------------------|
 JV4802| PID    Reference Object                     Distance      Geod. Az  |
 JV4802|                                                           dddmmss.s |
 JV4802| JV4801 CHAPEL HILL RESERVOIR TANK          APPROX. 7.2 KM 0481900.3 |
 JV4802| JV4798 MEIGS                               APPROX.10.1 KM 0601244.2 |
 JV4802| CA9868 ALDINO RM 1                          36.241 METERS 10406     |
 JV4802| JV4943 SWAN MEADOW WATER TANK              APPROX. 6.7 KM 1065227.0 |
 JV4802| JV4946 ABERDEEN PROVING GROUNDS TANK       APPROX. 9.6 KM 1122209.5 |
 JV4802| CA9867 ALDINO AZ MK                                       1345738.2 |
 JV4802| JV4805 ABERDEEN WESTERN UNION MW           APPROX. 0.5 KM 2472330.0 |
 JV4802| JV4804 ALDINO RM A                          33.486 METERS 30336     |
 JV4802| CA9869 ALDINO RM 2                          21.178 METERS 34207     |
 JV4802| JV4796 STONEY FOR FIRE TWR                  28.277 METERS 34708     |
 JV4802|---------------------------------------------------------------------|
 JV4802
 JV4802                          SUPERSEDED SURVEY CONTROL
 JV4802
 JV4802  NAD 83(1986)-  39 31 01.38208(N)    076 14 03.62995(W) AD(       ) 1
 JV4802  NAD 27      -  39 31 00.99020(N)    076 14 04.79110(W) AD(       ) 1
 JV4802  NGVD 29             120.01   (m)          393.7    (f) LEVELING    3  
 JV4802
 JV4802.Superseded values are not recommended for survey control.
 JV4802
 JV4802.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4802.See file dsdata.pdf to determine how the superseded data were derived.
 JV4802
 JV4802_MARKER: DS = TRIANGULATION STATION DISK
 JV4802_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4802_STAMPING: ALDINO 1958
 JV4802_MARK LOGO: CGS
 JV4802_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4802_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4802_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4802+SATELLITE: SATELLITE OBSERVATIONS - October 01, 1989
 JV4802
 JV4802  HISTORY     - Date     Condition        Report By
 JV4802  HISTORY     - 1958     MONUMENTED       CGS
 JV4802  HISTORY     - 1958     GOOD             CGS
 JV4802  HISTORY     - 1966     GOOD             CGS
 JV4802  HISTORY     - 1971     GOOD             MDDT
 JV4802  HISTORY     - 1974     GOOD             NGS
 JV4802  HISTORY     - 1979     GOOD             NGS
 JV4802  HISTORY     - 19891001 GOOD             RDA
 JV4802  HISTORY     - 1991     MARK NOT FOUND   USPSQD
 JV4802
 JV4802                          STATION DESCRIPTION
 JV4802
 JV4802'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4802'STATION IS LOCATED NEAR THE STEPNEY STONEY FOREST FIRE TOWER,
 JV4802'ABOUT 4.0 MILES NORTHWEST OF ABERDEEN AND ABOUT 3-1/2 MILES
 JV4802'SOUTH OF CHURCHVILLE.  STATION IS 33 FEET SOUTH-SOUTHWEST OF
 JV4802'TREE, 42 FEET SOUTH-SOUTHEAST OF APPROXIMATE CENTERLINE OF ROAD,
 JV4802'AND 82 FEET WEST OF POWERLINE POLE WITH TRANSFORMER.  THE MARK IS
 JV4802'A STANDARD DISK SET IN A 12X12 INCH CONCRETE MONUMENT, PROJECTS
 JV4802'ABOUT 2 INCHES AND THE DISK IS STAMPED ALDINO 1958.
 JV4802'
 JV4802'REFERENCE MARK NO. 1 IS 64 FEET SOUTH OF POWERLINE POLE, 7 FEET
 JV4802'WEST-NORTHWEST OF A 15 INCH TREE AND 19 FEET WEST OF APPROXIMATE
 JV4802'CENTERLINE OF ROAD.  THE MARK IS A STANDARD REFERENCE MARK DISK
 JV4802'SET IN A 12X12 INCH CONCRETE MONUMENT, PROJECTS ABOUT 3 INCHES
 JV4802'AND THE DISK IS STAMPED ALDINO NO 1 1958.
 JV4802'
 JV4802'STONEY FOREST FIRE TOWER (USGS) 1938 IS SET UNDER THE FIRE
 JV4802'TOWER 11 FEET NORTH-NORTHWEST OF STEPS.  THE MARK IS A STANDARD
 JV4802'GEOLOGICAL SURVEY DISK SET IN A CONCRETE MONUMENT, FLUSH WITH
 JV4802'THE SURFACE OF GROUND AND THE DISK IS STAMPED STONEY FOREST
 JV4802'FIRE TOWER 1938 396.
 JV4802'
 JV4802'AZIMUTH MARK IS 89 FEET NORTH-NORTHWEST OF EAST GATE POST, 46
 JV4802'FEET EAST-NORTHEAST OF POWERLINE POLE AND 22 FEET EAST OF
 JV4802'APPROXIMATE CENTERLINE OF DRIVEWAY.  THE MARK IS A STANDARD
 JV4802'AZIMUTH MARK DISK SET IN A 12X12 INCH CONCRETE MONUMENT, PROJECTS
 JV4802'3 INCHES AND THE DISK IS STAMPED ALDINO 1958.
 JV4802'
 JV4802'A TRAVERSE CONNECTION WAS MADE FROM ALDINO TO STONEY FOREST FIRE
 JV4802'TOWER (USGS) 1938 AND THE DISTANCE IS SHOWN ABOVE.
 JV4802'
 JV4802'TO REACH FROM THE POST OFFICE IN ABERDEEN, GO SOUTHEAST FOR
 JV4802'0.1 MILE TO U.S. HIGHWAY NO. 40.  TURN RIGHT AND GO WESTERLY ON
 JV4802'U.S. HIGHWAY NO. 40 FOR 2.5 MILE TO JUNCTION OF STATE HIGHWAY
 JV4802'NO. 7.  TURN RIGHT AND GO NORTHWESTERLY ON STATE HIGHWAY NO. 7
 JV4802'FOR 2.2 MILE TO JUNCTION WITH STATE HIGHWAY NO. 543.  TURN RIGHT
 JV4802'AND GO NORTHWESTERLY ON STATE HIGHWAY NO. 543 FOR 0.6 MILE TO T
 JV4802'ROAD RIGHT (CARSIN ROAD).  TURN RIGHT AND GO NORTHERLY ON
 JV4802'CARSIN ROAD FOR 2.0 MILE TO GRAVEL ROAD LEFT.  TURN LEFT AND GO
 JV4802'0.05 MILE TO AZIMUTH MARK ON RIGHT (NORTHEAST) SIDE OF ROAD.
 JV4802'CONTINUE NORTHWESTERLY ON GRAVELED ROAD FOR 0.1 MILE TO STEPNEY
 JV4802'STONEY FOREST FIRE TOWER AND STATION AS DESCRIBED.
 JV4802'
 JV4802'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4802
 JV4802                          STATION RECOVERY (1958)
 JV4802
 JV4802'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV4802'RECOVERED IN GOOD CONDITION.
 JV4802
 JV4802                          STATION RECOVERY (1966)
 JV4802
 JV4802'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV4802'THE STATION WAS RECOVERED AND ALL MARKS WERE FOUND IN GOOD
 JV4802'CONDITION.  THE 1958 DESCRIPTION IS ADEQUATE.
 JV4802'
 JV4802'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION ALDINO
 JV4802'RM A 1966, NOTE DISTANCE AND DIRECTION BELOW.
 JV4802
 JV4802                          STATION RECOVERY (1971)
 JV4802
 JV4802'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1971
 JV4802'ALDINO 1958 GOOD, FLUSH WITH SURFACE
 JV4802'
 JV4802'RM NO.1 GOOD, PROJECTS 2 INCHES
 JV4802'
 JV4802'STEPNEY, STONEY FOREST FIRE TOWER (USGS) 1938 GOOD, PROJECTS 5 INCHES
 JV4802'
 JV4802'ALDINO RM A 1966 GOOD, FLUSH WITH SURFACE
 JV4802'
 JV4802'STATION ALDINO 1958 IS 70.0 FT. S. OF THE S.W. LEG OF THE TOWER.
 JV4802'
 JV4802'ALDINO RM A 1966 IS 30.5 FT. WEST OF THE CENTER OF A TRACK ROAD
 JV4802'(INSTEAD OF SOUTH), AND 65.0 FT. WEST OF THE NORTHWEST LEG OF THE
 JV4802'FIRE TOWER (INSTEAD OF SOUTH OF THE SOUTHWEST LEG).
 JV4802
 JV4802                          STATION RECOVERY (1974)
 JV4802
 JV4802'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 JV4802'STATION WAS RECOVERED AND ALL MARKS ARE IN GOOD CONDITION.  A
 JV4802'SMALL CONCRETE BLOCK BUILDING IS NOW BLOCKING THE LINE TO THE
 JV4802'U.S. GEOLOGICAL SURVEY BENCH MARK WHICH IS BENEATH THE FIRE TOWER.
 JV4802'
 JV4802'A REFERENCE MARK NUMBER 2 WAS ESTABLISHED AT THIS TIME.  MARK IS
 JV4802'A STANDARD REFERENCE MARK DISK, STAMPED ALDINO 1958 NO 2 1974,
 JV4802'CEMENTED IN A DRILL HOLE IN THE TOP OF THE CONCRETE BASE OF THE
 JV4802'SOUTH LEG OF THE FIRE TOWER.
 JV4802'
 JV4802'DUE TO A SLIGHT CHANGE IN THE ROUTE TO THE STATION, A NEW TO
 JV4802'REACH THE STATION FOLLOWS.
 JV4802'
 JV4802'STATION IS REACHED FROM THE POST OFFICE IN ABERDEEN.  GO SOUTH
 JV4802'FOR 0.1 MILE TO U.S. HIGHWAY 40.  TURN RIGHT AND GO SOUTHWEST ON
 JV4802'HIGHWAY 40 FOR 2.5 MILES TO STATE HIGHWAY 7.  TURN RIGHT AND GO
 JV4802'NORTHWESTERLY ON HIGHWAY 7 FOR 2.7 MILES TO HIGHWAY 543.  TURN
 JV4802'RIGHT AND GO NORTHEASTERLY ON HIGHWAY 543 FOR 0.5 MILE TO A
 JV4802'T-ROAD.  TURN RIGHT FOR ABOUT 100 FEET, THENCE LEFT AND CONTINUE
 JV4802'NORTHEASTERLY AND EAST ON A MACADAMIZED ROAD FOR 2.0 MILES TO A
 JV4802'GRAVELED DRIVE ON THE LEFT WHICH LEADS TO THE STONEY FOREST
 JV4802'TOWER.  TURN LEFT AND GO NORTH-NORTHWESTERLY ON THE GRAVELED
 JV4802'DRIVE FOR ABOUT 120 FEET TO THE AZIMUTH MARK ON THE RIGHT,
 JV4802'AS DESCRIBED.  CONTINUE STRAIGHT AHEAD ON THE GRAVELED DRIVE
 JV4802'FOR 0.1 MILE TO THE FOREST TOWER AND STATION, AS DESCRIBED.
 JV4802'
 JV4802'HEIGHT OF LIGHT ABOVE STATION MARK 99.8 FEET.
 JV4802'
 JV4802'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4802'ABOUT 4 MILES NORTH OF ABERDEEN.
 JV4802
 JV4802                          STATION RECOVERY (1979)
 JV4802
 JV4802'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 JV4802'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JV4802'AS PREVIOUSLY DESCRIBED.  A NEW WITNESS POST WAS SET AT EACH MARKER
 JV4802'BECAUSE OF FARM OPERATIONS AND AT THE FARMERS REQUEST.
 JV4802
 JV4802                          STATION RECOVERY (1989)
 JV4802
 JV4802'RECOVERY NOTE BY RINKER DETWILER AND ASSOCIATES 1989
 JV4802'THE STATION IS LOCATED IN SOUTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV4802'3 MILES WEST OF THE VILLAGE OF ABERDEEN AT THE STEPNEY STONEY FOREST
 JV4802'FIRE TOWER.
 JV4802'THE STATION, RM A, RM 1, RM 2 WERE RECOVERED IN GOOD CONDITION.  THE
 JV4802'AZIMUTH MARK WAS NOT RECOVERED AND A NEW AZ MK WAS ESTABLISHED.  RM 3
 JV4802'WAS ESTABLISHED AT THIS TIME FOR SATELLITE VISABILITY. THE PREVIOUS
 JV4802'DESCRIPTION IS ADEQUATE.  ADDITIONAL INFORMATION IS AS FOLLOWS.
 JV4802'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 7 AND
 JV4802'STATE HIGHWAY 136 PROCEED NORTH ALONG HIGHWAY 136 3.34 MILES TO ITS
 JV4802'INTERSECTION WITH JAMES RUN ROAD.  TURN RIGHT AND PROCEED EAST ALONG
 JV4802'JAMES RUN ROAD 0.7 MILES TO ITS INTERSECTION WITH TOWER ROAD.  TURN
 JV4802'RIGHT AND PROCEED SOUTHEAST ALONG TOWER ROAD 1.2 MILES TO ITS
 JV4802'INTERSECTION WITH CARSINS RUN ROAD.  TURN LEFT AND PROCEED NORTHEAST
 JV4802'ALONG CARSINS RUN ROAD 0.3 MILES TO ITS INTERSECTION WITH THE DIRT
 JV4802'FIRE TOWER ROAD.  TURN LEFT AND PROCEED NORTHWEST ALONG THE DIRT FIRE
 JV4802'TOWER ROAD 0.1 MILE TO THE STATION ON THE LEFT SOUTH OF THE FIRE
 JV4802'TOWER.
 JV4802'THE STATION IS A U.S. COAST AND GEODECTIC SURVEY DISK SET IN CONCRETE
 JV4802'ABOUT 2 INCHES BELOW GROUND STAMPED ALDINO 1958.  THE STATION IS
 JV4802'118.95 FEET NORTHWEST OF REFERENCE MARK NUMBER 1, 69.48 FEET SOUTHEAST
 JV4802'OF REFERENCE MARK NUMBER 2, AND ------ FEET SOUTHEAST OF REFERENCE
 JV4802'MARK 3 WHICH IS 4.0 WEST OF THE NORTHWEST CORNER OF A CHAIN LINK FENCE
 JV4802'AROUND A MICROWAVE TOWER.
 JV4802
 JV4802                          STATION RECOVERY (1991)
 JV4802
 JV4802'RECOVERY NOTE BY US POWER SQUADRON 1991 (ELD)
 JV4802'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4804 ***********************************************************************
 JV4804  DESIGNATION -  ALDINO RM A
 JV4804  PID         -  JV4804
 JV4804  STATE/COUNTY-  MD/HARFORD
 JV4804  COUNTRY     -  US
 JV4804  USGS QUAD   -  ABERDEEN (2016)
 JV4804
 JV4804                         *CURRENT SURVEY CONTROL
 JV4804  ______________________________________________________________________
 JV4804* NAD 83(1991) POSITION- 39 31 01.98908(N) 076 14 04.79190(W)   ADJUSTED
 JV4804* NAVD 88 ORTHO HEIGHT -   119.98  (+/-2cm)      393.6   (feet) VERTCON3
 JV4804  ______________________________________________________________________
 JV4804  GEOID HEIGHT    -        -32.999 (meters)                     GEOID18
 JV4804  LAPLACE CORR    -         -2.11  (seconds)                    DEFLEC18
 JV4804  HORZ ORDER      -  FIRST
 JV4804  VERT ORDER      -  THIRD ? (See Below)
 JV4804
 JV4804.The horizontal coordinates were established by classical geodetic methods
 JV4804.and adjusted by the National Geodetic Survey in January 1992.
 JV4804
 JV4804.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4804.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4804
 JV4804.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4804.GEOID18 height accuracy estimate available here.
 JV4804
 JV4804.The vertical order pertains to the NGVD 29 superseded value.
 JV4804
 JV4804.Click photographs - Photos may exist for this station.
 JV4804
 JV4804.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4804
 JV4804. The following values were computed from the NAD 83(1991) position.
 JV4804
 JV4804;                    North         East     Units Scale Factor Converg.
 JV4804;SPC MD       -   205,702.575   465,812.932   MT  1.00001245   +0 28 49.3
 JV4804;SPC MD       -   674,875.86  1,528,254.59   sFT  1.00001245   +0 28 49.3
 JV4804;UTM  18      - 4,374,903.191   393,869.388   MT  0.99973868   -0 47 08.5
 JV4804
 JV4804!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4804!SPC MD       -   0.99998635  x   1.00001245  =   0.99999880
 JV4804!UTM  18      -   0.99998635  x   0.99973868  =   0.99972504
 JV4804
 JV4804:                Primary Azimuth Mark                     Grid Az
 JV4804:SPC MD       -  MEIGS                                    059 54 02.9
 JV4804:UTM  18      -  MEIGS                                    061 10 00.7
 JV4804
 JV4804_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9386974903(NAD 83)
 JV4804
 JV4804|---------------------------------------------------------------------|
 JV4804| PID    Reference Object                     Distance      Geod. Az  |
 JV4804|                                                           dddmmss.s |
 JV4804| JV4798 MEIGS                               APPROX.10.1 KM 0602252.2 |
 JV4804| JV4802 ALDINO                               33.486 METERS 12335     |
 JV4804| JV4805 ABERDEEN WESTERN UNION MW           APPROX. 0.5 KM 2442256.8 |
 JV4804|---------------------------------------------------------------------|
 JV4804
 JV4804                          SUPERSEDED SURVEY CONTROL
 JV4804
 JV4804  NAD 83(1986)-  39 31 01.98305(N)    076 14 04.79817(W) AD(       ) 1
 JV4804  NAD 27      -  39 31 01.59096(N)    076 14 05.95884(W) AD(       ) 1
 JV4804  NGVD 29             120.22   (m)          394.4    (f) LEVELING    3  
 JV4804
 JV4804.Superseded values are not recommended for survey control.
 JV4804
 JV4804.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4804.See file dsdata.pdf to determine how the superseded data were derived.
 JV4804
 JV4804_MARKER: DS = TRIANGULATION STATION DISK
 JV4804_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4804_STAMPING: ALDINO RM A 1966
 JV4804_MARK LOGO: CGS
 JV4804_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4804+STABILITY: SURFACE MOTION
 JV4804
 JV4804  HISTORY     - Date     Condition        Report By
 JV4804  HISTORY     - 1966     MONUMENTED       CGS
 JV4804  HISTORY     - 1991     MARK NOT FOUND   USPSQD
 JV4804  HISTORY     - 19991226 GOOD             USPSQD
 JV4804
 JV4804                          STATION DESCRIPTION
 JV4804
 JV4804'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV4804'THE STATION IS LOCATED ON THE PROPERTY OF THE STATE FOREST
 JV4804'SERVICE.  IT IS ABOUT 4 MILES NORTHWEST OF ABERDEEN AND 3-1/2
 JV4804'MILES SOUTH OF CHURCHVILLE.
 JV4804'
 JV4804'THE STATION MARK IS A STANDARD DISK STAMPED ALDINO RM A 1966,
 JV4804'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT WHICH
 JV4804'IS FLUSH WITH THE GROUND SURFACE.  IT IS 30.5 FEET SOUTH OF THE
 JV4804'CENTER OF A TRACK ROAD, 65 FEET SOUTH OF THE SOUTHWEST LEG OF THE
 JV4804'STONEY FOREST FIRE TOWER AND 65 FEET NORTHWEST OF A 15 INCH
 JV4804'TREE.  THE UNDERGROUND DISK IS SET IN AN IRREGULAR MASS OF
 JV4804'CONCRETE ABOUT 42-INCHES BELOW THE GROUND SURFACE.
 JV4804'
 JV4804'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION ALDINO
 JV4804'1958, DISTANCE BEING 33.4856 METERS (109.861) FEET SOUTHEAST.
 JV4804'
 JV4804'NOTE--DESCRIPTION FOR A ROUTE TO REACH THIS STATION FOLLOWS --
 JV4804'TO REACH FROM THE POST OFFICE IN ABERDEEN, GO SOUTHEAST FOR
 JV4804'0.1 MILE TO U.S. HIGHWAY NO. 40.  TURN RIGHT AND GO WESTERLY ON
 JV4804'U.S. HIGHWAY NO. 40 FOR 2.5 MILE TO JUNCTION OF STATE HIGHWAY
 JV4804'NO. 7.  TURN RIGHT AND GO NORTHWESTERLY ON STATE HIGHWAY NO. 7
 JV4804'FOR 2.2 MILE TO JUNCTION WITH STATE HIGHWAY NO. 543.  TURN RIGHT
 JV4804'AND GO NORTHWESTERLY ON STATE HIGHWAY NO. 543 FOR 0.6 MILE TO T
 JV4804'ROAD RIGHT (CARSIN ROAD).  TURN RIGHT AND GO NORTHERLY ON
 JV4804'CARSIN ROAD FOR 2.0 MILE TO GRAVEL ROAD LEFT.  TURN LEFT AND GO
 JV4804'0.05 MILE TO ALDINO AZIMUTH MARK ON RIGHT (NORTHEAST) SIDE OF ROAD.
 JV4804'CONTINUE NORTHWESTERLY ON GRAVELED ROAD FOR 0.1 MILE TO STEPNEY
 JV4804'STONEY FOREST FIRE TOWER AND STATION ALDINO.
 JV4804
 JV4804                          STATION RECOVERY (1991)
 JV4804
 JV4804'RECOVERY NOTE BY US POWER SQUADRON 1991 (ELD)
 JV4804'MARK NOT FOUND.
 JV4804
 JV4804                          STATION RECOVERY (1999)
 JV4804
 JV4804'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV4804'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6122 ***********************************************************************
 JV6122  DESIGNATION -  ALESIA
 JV6122  PID         -  JV6122
 JV6122  STATE/COUNTY-  MD/CARROLL
 JV6122  COUNTRY     -  US
 JV6122  USGS QUAD   -  LINEBORO (2016)
 JV6122
 JV6122                         *CURRENT SURVEY CONTROL
 JV6122  ______________________________________________________________________
 JV6122* NAD 83(1991) POSITION- 39 40 39.94330(N) 076 48 49.13066(W)   ADJUSTED
 JV6122* NAVD 88 ORTHO HEIGHT -   276.    (meters)      906.    (feet) SCALED
 JV6122  ______________________________________________________________________
 JV6122  GEOID HEIGHT    -        -32.300 (meters)                     GEOID18
 JV6122  LAPLACE CORR    -          1.37  (seconds)                    DEFLEC18
 JV6122  HORZ ORDER      -  FIRST
 JV6122
 JV6122.The horizontal coordinates were established by classical geodetic methods
 JV6122.and adjusted by the National Geodetic Survey in January 1992.
 JV6122
 JV6122.The orthometric height was scaled from a topographic map.
 JV6122
 JV6122.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6122.GEOID18 height accuracy estimate available here.
 JV6122
 JV6122.Click photographs - Photos may exist for this station.
 JV6122
 JV6122.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6122
 JV6122. The following values were computed from the NAD 83(1991) position.
 JV6122
 JV6122;                    North         East     Units Scale Factor Converg.
 JV6122;SPC MD       -   223,268.114   415,988.669   MT  1.00004779   +0 07 01.1
 JV6122;SPC MD       -   732,505.47  1,364,789.49   sFT  1.00004779   +0 07 01.1
 JV6122;SPC PA S     -    38,669.811   680,335.836   MT  1.00004979   +0 36 27.0
 JV6122;SPC PA S     -   126,869.20  2,232,068.49   sFT  1.00004979   +0 36 27.0
 JV6122;UTM  18      - 4,393,565.012   344,457.498   MT  0.99989786   -1 09 29.5
 JV6122
 JV6122!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6122!SPC MD       -   0.99996180  x   1.00004779  =   1.00000959
 JV6122!SPC PA S     -   0.99996180  x   1.00004979  =   1.00001159
 JV6122!UTM  18      -   0.99996180  x   0.99989786  =   0.99985967
 JV6122
 JV6122:                Primary Azimuth Mark                     Grid Az
 JV6122:SPC MD       -  ALESIA AZ MK                             181 38 47.3
 JV6122:SPC PA S     -  ALESIA AZ MK                             181 09 21.4
 JV6122:UTM  18      -  ALESIA AZ MK                             182 55 17.9
 JV6122
 JV6122_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4445793565(NAD 83)
 JV6122
 JV6122|---------------------------------------------------------------------|
 JV6122| PID    Reference Object                     Distance      Geod. Az  |
 JV6122|                                                           dddmmss.s |
 JV6122| JV6121 EKLO MIDDLETN GUNPOWDER BAP CH      APPROX. 7.7 KM 0910558.4 |
 JV6122| JV6118 RAYVILLE UNITED BRETHEREN CH        APPROX.10.0 KM 1033519.4 |
 JV6122| CA9871 ALESIA RM 1                          35.387 METERS 14221     |
 JV6122| CA9870 ALESIA AZ MK                                       1814548.4 |
 JV6122| CA9872 ALESIA RM 2                          42.282 METERS 27041     |
 JV6122|---------------------------------------------------------------------|
 JV6122
 JV6122                          SUPERSEDED SURVEY CONTROL
 JV6122
 JV6122  NAD 83(1986)-  39 40 39.93729(N)    076 48 49.13321(W) AD(       ) 1
 JV6122  NAD 27      -  39 40 39.56400(N)    076 48 50.21800(W) AD(       ) 1
 JV6122
 JV6122.Superseded values are not recommended for survey control.
 JV6122
 JV6122.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6122.See file dsdata.pdf to determine how the superseded data were derived.
 JV6122
 JV6122_MARKER: DS = TRIANGULATION STATION DISK
 JV6122_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6122_STAMPING: ALESIA 1939
 JV6122_MARK LOGO: CGS
 JV6122_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6122+STABILITY: SURFACE MOTION
 JV6122
 JV6122  HISTORY     - Date     Condition        Report By
 JV6122  HISTORY     - 1939     MONUMENTED       CGS
 JV6122  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV6122  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV6122  HISTORY     - 1962     MARK NOT FOUND   LOCENG
 JV6122  HISTORY     - 1971     SEE DESCRIPTION  NGS
 JV6122
 JV6122                          STATION DESCRIPTION
 JV6122
 JV6122'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV6122'THIS STATION IS LOCATED ON THE HIGHEST POINT OF A HIGH CULTIVATED
 JV6122'HILL ABOUT 1.0 MILE SE OF THE VILLAGE OF ALESIA, 4 MILES ENE OF
 JV6122'THE VILLAGE OF MANCHESTER, ON PROPERTY OWNED BY MR. J.H. BRADSHAW,
 JV6122'WHO LIVES 0.25 MILE N OF THE STATION.  THE MARK IS SET 30 FEET
 JV6122'N OF THE CENTER LINE OF A GRAVEL ROAD, 13 FEET N OF THE DITCH
 JV6122'BANK.  THE MARK IS 12 INCHES BELOW THE SURFACE.
 JV6122'
 JV6122'THE SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE
 JV6122'STANDARD BRONZE DISKS SET IN CONCRETE.
 JV6122'
 JV6122'REFERENCE MARK NO.1 IS SE OF THE STATION, ON THE S SIDE OF THE
 JV6122'GRAVEL ROAD, AT THE NE CORNER OF THE FIELD.  THE MARK PROJECTS
 JV6122'8 INCHES.
 JV6122'
 JV6122'REFERENCE MARK NO.2 IS WSW OF THE STATION, 18 FEET S OF THE
 JV6122'CENTER LINE OF THE GRAVEL ROAD.  THE MARK PROJECTS 8 INCHES.
 JV6122'
 JV6122'THE AZIMUTH MARK IS APPROXIMATELY 0.6 MILE SSE OF THE STATION,
 JV6122'15 FEET S OF A CULTIVATED FIELD, 9 FEET S OF THE CENTER LINE OF
 JV6122'THE FARM ROAD, 36 FEET W OF THE FARM ROADS Y-INTERSECTION.  THE
 JV6122'MARK PROJECTS 8 INCHES.
 JV6122'
 JV6122'TO REACH FROM THE STATION, GO E FOR 0.1 MILE TO A FARM ROAD
 JV6122'RIGHT TURN RIGHT AND GO 0.6 MILE TO THE TOP OF THE HILL AND THE
 JV6122'MARK ON THE LEFT SIDE OF THE ROAD.
 JV6122'
 JV6122'TO REACH THE STATION FROM THE UNDERPASS AT THE W EDGE OF ALESIA,
 JV6122'GO S AND E FOR 1.0 MILE TO THE HIGHEST POINT OF THE HILL AND THE
 JV6122'STATION ON THE LEFT SIDE OF THE ROAD.
 JV6122'
 JV6122'NO OBJECTS V.G.
 JV6122'
 JV6122'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV6122
 JV6122                          STATION RECOVERY (1951)
 JV6122
 JV6122'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951 (FRG)
 JV6122'REFERENCE MARK 2 WAS RECOVERED IN GOOD CONDITION.  REFERENCE MARK
 JV6122'1 IS BELIEVED DESTROYED.  BROKEN PIECES OF CONCRETE MONUMENT WERE
 JV6122'FOUND NEAR ITS POSITION.  NO DISK WAS FOUND.  NO DIGGING WAS
 JV6122'DONE FOR STATION MARK.  NO SEARCH WAS MADE FOR AZIMUTH MARK.
 JV6122
 JV6122                          STATION RECOVERY (1953)
 JV6122
 JV6122'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JV6122'STATION IS SET 12 INCHES BELOW GROUND AND COULD NOT BE FOUND
 JV6122'WITHOUT A TRANSIT.  REFERENCE MARK 1 COULD NOT BE
 JV6122'FOUND.  REFERENCE MARK 2 IS IN GOOD CONDITION.
 JV6122
 JV6122                          STATION RECOVERY (1962)
 JV6122
 JV6122'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1962 (LEA)
 JV6122'RECOVERED BY LEA MAPS, INC.
 JV6122'
 JV6122'STATION WAS SEARCHED FOR BUT NOT FOUND.  PROPERTY OWNER WAS
 JV6122'CONTACTED, HE HAS WORKED THE FIELD FOR 8 - 10 YEARS AND HAS
 JV6122'NEVER SEEN THE STATION AND HAD NO KNOWLEDGE OF ITS EXISTENCE.
 JV6122'
 JV6122'REFERENCE MARK NO. 2 WAS FOUND UPROOTED.
 JV6122
 JV6122                          STATION RECOVERY (1971)
 JV6122
 JV6122'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV6122'THIS STATION IS LOCATED ON THE HIGHEST POINT OF A HIGH CULTIVATED
 JV6122'HILL, 500 FEET WEST OF A FARMROAD SOUTH, 460 FEET EAST OF THE
 JV6122'CORNER OF A WOODS, 29.0 FEET NORTH OF THE CENTERLINE OF MACADAM
 JV6122'ROAD, AND THE MARK IS 12-INCHES BELOW THE SURFACE OF THE GROUND.
 JV6122'
 JV6122'REFERENCE MARK NO. 1 HAS BEEN DESTROYED.  REFERENCE MARK NO. 2
 JV6122'WAS FOUND PLOWED OUT OF POSITION AND BURIED IN CULTIVATED FIELD.
 JV6122'
 JV6122'THE AZIMUTH MARK WAS RECOVERED IN GOOD CONDITION.  IT IS 0.6
 JV6122'MILE SOUTH OF THE STATION, 0.15 MILE SOUTH OF MR. JOHN HURTS
 JV6122'HOUSE, 34 FEET WEST OF CENTERLINE OF PRIVATE ROAD, 25 FEET WEST
 JV6122'OF UTILITY POLE NO. 160395, 22.5 FEET NORTH OF CENTERLINE OF
 JV6122'COUNTY ROAD, AND ON PROPERTY OF MR. JOHN HURT.  IT PROJECTS ABOUT
 JV6122'8-INCHES AND THE DISK IS STAMPED, ALESIA 1939.
 JV6122'
 JV6122'A NEW REFERENCE MARK NO. 3 WAS SET.  IT IS 463.33 FEET EAST OF
 JV6122'THE STATION, SET AT EDGE OF WOODS, 29 FEET SOUTH OF THE
 JV6122'CENTERLINE OF MACADAM ROAD, 10 FEET SOUTH OF CORNER TREE OF
 JV6122'WOODS AREA, AND 1.4 FEET SOUTHWEST OF A METAL WITNESS POST AND
 JV6122'SIGN.  THE MARK PROJECTS ABOUT 5 INCHES AND THE DISK IS STAMPED,
 JV6122'ALESIA NO 3 1939 1971.
 JV6122'
 JV6122'THE STATION IS ON PROPERTY OWNED BY MR. GROVER HARPER, WHO LIVES
 JV6122'ABOUT 0.35 MILE NORTH OF STATION.
 JV6122'
 JV6122'TO REACH FROM THE RAILROAD UNDERPASS IN ALESIA.  GO SOUTH ON
 JV6122'ST. HWY. NO. 25 FOR 0.5 MILE TO A ROAD RIGHT, CONTINUE STRAIGHT
 JV6122'AHEAD IN AN EASTERLY DIRECTION FOR 0.35 MILE TO A ROAD LEFT (ROAD
 JV6122'TO PROPERTY OWNERS HOUSE) CONTINUE STRAIGHT AHEAD, EAST, FOR 0.25
 JV6122'MILE TO SUMMIT OF GRADE AND THE STATION MARK IN FIELD ON THE
 JV6122'LEFT.
 JV6122'
 JV6122'TO REACH THE AZIMUTH MARK FROM THE STATION.  GO EASTERLY FOR
 JV6122'0.1 MILE TURN RIGHT AND GO SOUTH ON PRIVATE FARM ROAD FOR 0.25
 JV6122'MILE TO BOTTOM OF GRADE AND FARM HOUSE TO RIGHT, CONTINUE STRAIGHT
 JV6122'AHEAD, SOUTH, FOR 0.15 MILE TO A T-ROAD INTERSECTION AND THE
 JV6122'AZIMUTH MARK ON THE RIGHT.
 JV6122'
 JV6122'NOTE--DUE TO THE MISTREATING OF HIS PROPERTY IN THE PAST, THE
 JV6122'PROPERTY OWNER REFUSED PERMISSION TO ENTER HIS PROPERTY TO SET
 JV6122'UP ANY TYPE OF INSTRUMENT TO MEASURE ANGLES OR
 JV6122'DISTANCES...  THEREFORE THIS STATION WAS NOT OCCUPIED.  THERE
 JV6122'WAS NO SUITABLE PLACE TO SET A REFERENCE MARK NO. 4.
 JV6122'
 JV6122'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV6122'1.0 MILE SOUTHEAST OF ALESIA, AND 4.0 MILES EAST NORTHEAST OF
 JV6122'MANCHESTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6341 ***********************************************************************
 JV6341  DESIGNATION -  ALIBONE
 JV6341  PID         -  JV6341
 JV6341  STATE/COUNTY-  MD/HARFORD
 JV6341  COUNTRY     -  US
 JV6341  USGS QUAD   -  BEL AIR (2016)
 JV6341
 JV6341                         *CURRENT SURVEY CONTROL
 JV6341  ______________________________________________________________________
 JV6341* NAD 83(2011) POSITION- 39 37 18.25419(N) 076 17 51.66933(W)   ADJUSTED
 JV6341* NAD 83(2011) ELLIP HT-    15.614 (meters)        (06/27/12)   ADJUSTED
 JV6341* NAD 83(2011) EPOCH   -  2010.00
 JV6341* NAVD 88 ORTHO HEIGHT -    48.414 (meters)      158.84  (feet) ADJUSTED
 JV6341  ______________________________________________________________________
 JV6341  GEOID HEIGHT    -        -32.766 (meters)                     GEOID18
 JV6341  NAD 83(2011) X  -  1,165,344.256 (meters)                     COMP
 JV6341  NAD 83(2011) Y  - -4,779,595.311 (meters)                     COMP
 JV6341  NAD 83(2011) Z  -  4,045,733.635 (meters)                     COMP
 JV6341  LAPLACE CORR    -         -1.89  (seconds)                    DEFLEC18
 JV6341  DYNAMIC HEIGHT  -         48.390 (meters)      158.76  (feet) COMP
 JV6341  MODELED GRAVITY -    980,126.1   (mgal)                       NAVD 88
 JV6341
 JV6341  VERT ORDER      -  FIRST     CLASS II
 JV6341
 JV6341  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6341  Standards:
 JV6341         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6341            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6341  -------------------------------------------------------------------
 JV6341  NETWORK    2.93   6.39           1.26   0.97   3.26      0.63014253
 JV6341  -------------------------------------------------------------------
 JV6341  Click here for local accuracies and other accuracy information.
 JV6341
 JV6341.The horizontal coordinates were established by GPS observations
 JV6341.and adjusted by the National Geodetic Survey in June 2012.
 JV6341
 JV6341.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6341.been affixed to the stable North American tectonic plate. See 
 JV6341.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6341
 JV6341.The horizontal coordinates are valid at the epoch date displayed above
 JV6341.which is a decimal equivalence of Year/Month/Day.
 JV6341
 JV6341.The orthometric height was determined by differential leveling and
 JV6341.adjusted by the NATIONAL GEODETIC SURVEY
 JV6341.in June 1991.
 JV6341
 JV6341.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6341.GEOID18 height accuracy estimate available here.
 JV6341
 JV6341.Click photographs - Photos may exist for this station.
 JV6341
 JV6341.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6341
 JV6341.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6341
 JV6341.The ellipsoidal height was determined by GPS observations
 JV6341.and is referenced to NAD 83.
 JV6341
 JV6341.The dynamic height is computed by dividing the NAVD 88
 JV6341.geopotential number by the normal gravity value computed on the
 JV6341.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6341.degrees latitude (g = 980.6199 gals.).
 JV6341
 JV6341.The modeled gravity was interpolated from observed gravity values.
 JV6341
 JV6341. The following values were computed from the NAD 83(2011) position.
 JV6341
 JV6341;                    North         East     Units Scale Factor Converg.
 JV6341;SPC MD       -   217,263.201   460,304.406   MT  1.00003456   +0 26 26.9
 JV6341;SPC MD       -   712,804.35  1,510,182.04   sFT  1.00003456   +0 26 26.9
 JV6341;UTM  18      - 4,386,579.572   388,619.336   MT  0.99975273   -0 49 39.5
 JV6341
 JV6341!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6341!SPC MD       -   0.99999755  x   1.00003456  =   1.00003211
 JV6341!UTM  18      -   0.99999755  x   0.99975273  =   0.99975028
 JV6341
 JV6341_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8861986579(NAD 83)
 JV6341
 JV6341                          SUPERSEDED SURVEY CONTROL
 JV6341
 JV6341  NAD 83(2007)-  39 37 18.25446(N)    076 17 51.67009(W) AD(2002.00) 0
 JV6341  ELLIP H (02/10/07)   15.637  (m)                       GP(2002.00)    
 JV6341  ELLIP H (09/18/02)   15.656  (m)                       GP(       ) 4 2
 JV6341  NAD 83(1991)-  39 37 18.25420(N)    076 17 51.66990(W) AD(       ) 1
 JV6341  ELLIP H (01/27/92)   15.650  (m)                       GP(       ) 4 1
 JV6341  NAD 83(1986)-  39 37 18.24724(N)    076 17 51.67649(W) AD(       ) 1
 JV6341  NGVD 29              48.66   (m)          159.6    (f) LEVELING    3  
 JV6341
 JV6341.Superseded values are not recommended for survey control.
 JV6341
 JV6341.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6341.See file dsdata.pdf to determine how the superseded data were derived.
 JV6341
 JV6341_MARKER: DD = SURVEY DISK
 JV6341_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6341_STAMPING: 88 ALIBONE 1989
 JV6341_MARK LOGO: MD-025
 JV6341_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6341_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6341+STABILITY: SURFACE MOTION
 JV6341_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6341+SATELLITE: SATELLITE OBSERVATIONS - September 10, 2008
 JV6341
 JV6341  HISTORY     - Date     Condition        Report By
 JV6341  HISTORY     - 1989     MONUMENTED       RDA
 JV6341  HISTORY     - 19980711 GOOD             USPSQD
 JV6341  HISTORY     - 20080910 GOOD             GPSSS
 JV6341
 JV6341                          STATION DESCRIPTION
 JV6341
 JV6341'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6341'THE STATION IS LOCATED IN NORTHEAST CENTRAL HARFORD COUNTY, MARYLAND
 JV6341'ABOUT 5.5 MILES NORTHEAST OF BEL AIR.  TO REACH THE STATION FROM THE
 JV6341'INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 136 IN THE
 JV6341'VILLAGE OF POPLAR GROVE PROCEED SOUTHWEST ALONG HIGHWAY 1 1.86 MILES
 JV6341'TO THE STATION ON THE LEFT.  THE STATION IS A STANDARD HARFORD COUNTY
 JV6341'STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 88
 JV6341'ALIBONE 1989.  THE STATION IS 2.3 FEET NORTHWEST OF A WHITE BOARD
 JV6341'FENCE, 31.8 FEET NORTHEAST OF THE NORTH GATE POST IN THE WHITE BOARD
 JV6341'FENCE, AND 28.4 FEET SOUTHEAST OF THE CENTERLINE OF HIGHWAY 1.
 JV6341
 JV6341                          STATION RECOVERY (1998)
 JV6341
 JV6341'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6341'RECOVERED IN GOOD CONDITION.
 JV6341
 JV6341                          STATION RECOVERY (2008)
 JV6341
 JV6341'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (KH)
 JV6341'RECOVERED BY KEITH HEINDEL, PLS AND GARY GANJON, PLS OF PROFESSIONAL
 JV6341'SURVEYS, LLC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6342 ***********************************************************************
 JV6342  DESIGNATION -  ALIBONE AZ MK
 JV6342  PID         -  JV6342
 JV6342  STATE/COUNTY-  MD/HARFORD
 JV6342  COUNTRY     -  US
 JV6342  USGS QUAD   -  DELTA (2019)
 JV6342
 JV6342                         *CURRENT SURVEY CONTROL
 JV6342  ______________________________________________________________________
 JV6342* NAD 83(1991) POSITION- 39 37 31.33798(N) 076 17 33.67076(W)   NO CHECK
 JV6342* NAVD 88 ORTHO HEIGHT -    56.805 (meters)      186.37  (feet) ADJUSTED
 JV6342  ______________________________________________________________________
 JV6342  GEOID HEIGHT    -        -32.772 (meters)                     GEOID18
 JV6342  LAPLACE CORR    -         -1.71  (seconds)                    DEFLEC18
 JV6342  DYNAMIC HEIGHT  -         56.777 (meters)      186.28  (feet) COMP
 JV6342  MODELED GRAVITY -    980,127.0   (mgal)                       NAVD 88
 JV6342
 JV6342  HORZ ORDER      -  SECOND
 JV6342  VERT ORDER      -  FIRST     CLASS II
 JV6342
 JV6342.The horizontal coordinates were established by classical geodetic methods
 JV6342.and adjusted by the National Geodetic Survey in January 1992.
 JV6342
 JV6342.No horizontal observational check was made to the station.
 JV6342
 JV6342.The orthometric height was determined by differential leveling and
 JV6342.adjusted by the NATIONAL GEODETIC SURVEY
 JV6342.in June 1991.
 JV6342
 JV6342.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6342.GEOID18 height accuracy estimate available here.
 JV6342
 JV6342.Click photographs - Photos may exist for this station.
 JV6342
 JV6342.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6342
 JV6342.The dynamic height is computed by dividing the NAVD 88
 JV6342.geopotential number by the normal gravity value computed on the
 JV6342.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6342.degrees latitude (g = 980.6199 gals.).
 JV6342
 JV6342.The modeled gravity was interpolated from observed gravity values.
 JV6342
 JV6342. The following values were computed from the NAD 83(1991) position.
 JV6342
 JV6342;                    North         East     Units Scale Factor Converg.
 JV6342;SPC MD       -   217,670.034   460,730.563   MT  1.00003539   +0 26 38.2
 JV6342;SPC MD       -   714,139.10  1,511,580.19   sFT  1.00003539   +0 26 38.2
 JV6342;UTM  18      - 4,386,976.759   389,054.272   MT  0.99975154   -0 49 28.3
 JV6342
 JV6342!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6342!SPC MD       -   0.99999623  x   1.00003539  =   1.00003162
 JV6342!UTM  18      -   0.99999623  x   0.99975154  =   0.99974777
 JV6342
 JV6342_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8905486976(NAD 83)
 JV6342
 JV6342                          SUPERSEDED SURVEY CONTROL
 JV6342
 JV6342  NAD 83(1986)-  39 37 31.33089(N)    076 17 33.67716(W) AD(       ) 2
 JV6342  NGVD 29              57.05   (m)          187.2    (f) LEVELING    3  
 JV6342
 JV6342.Superseded values are not recommended for survey control.
 JV6342
 JV6342.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6342.See file dsdata.pdf to determine how the superseded data were derived.
 JV6342
 JV6342_MARKER: DZ = AZIMUTH MARK DISK
 JV6342_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6342_STAMPING: 88 ALIBONE 1989
 JV6342_MARK LOGO: MD-025
 JV6342_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6342_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6342+STABILITY: SURFACE MOTION
 JV6342_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6342+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6342
 JV6342  HISTORY     - Date     Condition        Report By
 JV6342  HISTORY     - 1989     MONUMENTED       RDA
 JV6342  HISTORY     - 19980711 GOOD             USPSQD
 JV6342
 JV6342                          STATION DESCRIPTION
 JV6342
 JV6342'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6342'THE STATION IS LOCATED IN NORTHEAST CENTRAL HARFORD COUNTY, MARYLAND
 JV6342'ABOUT 5.5 MILES NORTHEAST OF BEL AIR.  TO REACH THE STATION FROM THE
 JV6342'INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 136 IN THE
 JV6342'VILLAGE OF POPLAR GROVE PROCEED SOUTHWEST ALONG HIGHWAY 1 1.86 MILES
 JV6342'TO THE STATION ON THE LEFT.  TO REACH THE AZIMUTH MARK FROM THE
 JV6342'STATION PROCEED NORTHEAST ALONG HIGHWAY 1 0.35 MILES TO THE MARK ON
 JV6342'THE LEFT.  THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET IN
 JV6342'CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 88 ALIBONE 1989.  THE MARK
 JV6342'IS 28.9 FEET NORTHWEST OF THE CENTERLINE OF HIGHWAY 1, 92.0 FEET
 JV6342'SOUTHWEST OF C AND P COMPANY POLE NUMBER 9767, AND 62.0 FEET
 JV6342'NORTHEAST OF THE CENTERLINE OF PRIVATE DIRVE OF J.L. ICKES BOX 1306.
 JV6342
 JV6342                          STATION RECOVERY (1998)
 JV6342
 JV6342'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6342'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5846 ***********************************************************************
 HV5846  DESIGNATION -  ALL
 HV5846  PID         -  HV5846
 HV5846  STATE/COUNTY-  MD/TALBOT
 HV5846  COUNTRY     -  US
 HV5846  USGS QUAD   -  TRAPPE (2016)
 HV5846
 HV5846                         *CURRENT SURVEY CONTROL
 HV5846  ______________________________________________________________________
 HV5846* NAD 83(1991) POSITION- 38 42 42.07036(N) 076 06 33.65212(W)   ADJUSTED
 HV5846* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5846  ______________________________________________________________________
 HV5846  GEOID HEIGHT    -        -34.722 (meters)                     GEOID18
 HV5846  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 HV5846  HORZ ORDER      -  THIRD
 HV5846
 HV5846.The horizontal coordinates were established by classical geodetic methods
 HV5846.and adjusted by the National Geodetic Survey in January 1992.
 HV5846
 HV5846.The orthometric height was scaled from a topographic map.
 HV5846
 HV5846.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5846.GEOID18 height accuracy estimate available here.
 HV5846
 HV5846.Click photographs - Photos may exist for this station.
 HV5846
 HV5846.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5846
 HV5846. The following values were computed from the NAD 83(1991) position.
 HV5846
 HV5846;                    North         East     Units Scale Factor Converg.
 HV5846;SPC MD       -   116,379.153   477,461.333   MT  0.99995393   +0 33 32.4
 HV5846;SPC MD       -   381,820.60  1,566,471.06   sFT  0.99995393   +0 33 32.4
 HV5846;UTM  18      - 4,285,366.878   403,549.678   MT  0.99971455   -0 41 37.8
 HV5846
 HV5846!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5846!SPC MD       -   1.00000533  x   0.99995393  =   0.99995926
 HV5846!UTM  18      -   1.00000533  x   0.99971455  =   0.99971988
 HV5846
 HV5846:                Primary Azimuth Mark                     Grid Az
 HV5846:SPC MD       -  HIGHER                                   339 10 08.0
 HV5846:UTM  18      -  HIGHER                                   340 25 18.2
 HV5846
 HV5846_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0354985366(NAD 83)
 HV5846
 HV5846|---------------------------------------------------------------------|
 HV5846| PID    Reference Object                     Distance      Geod. Az  |
 HV5846|                                                           dddmmss.s |
 HV5846| HV5853 CAM                                 393.382 METERS 25056     |
 HV5846| HV5849 HIGHER                              463.546 METERS 3394340.4 |
 HV5846|---------------------------------------------------------------------|
 HV5846
 HV5846                          SUPERSEDED SURVEY CONTROL
 HV5846
 HV5846  NAD 83(1986)-  38 42 42.06666(N)    076 06 33.66828(W) AD(       ) 3
 HV5846  NAD 27      -  38 42 41.62900(N)    076 06 34.90800(W) AD(       ) 3
 HV5846  USSD        -  38 42 42.02700(N)    076 06 34.70000(W) AD(       ) 3
 HV5846
 HV5846.Superseded values are not recommended for survey control.
 HV5846
 HV5846.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5846.See file dsdata.pdf to determine how the superseded data were derived.
 HV5846
 HV5846_MARKER: H = DRILL HOLE
 HV5846_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5846_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5846
 HV5846  HISTORY     - Date     Condition        Report By
 HV5846  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5846  HISTORY     - 1940     GOOD             CGS
 HV5846  HISTORY     - 1973     GOOD             MDDNR
 HV5846
 HV5846                          STATION DESCRIPTION
 HV5846
 HV5846'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5846'ON THE NORTHERN SHORE OF TRIPPE CREEK, ABOUT 1-3/4 MILES FROM
 HV5846'WHERE TRIPPE CREEK ENTERS TRED AVON RIVER, 300 YARDS W BY N OF
 HV5846'COLONIAL HOUSE, ABOUT 1 FOOT ABOVE HIGH WATER, 35 YARDS SE OF
 HV5846'SHORE, 35 YARDS E OF ROUND POINT OF SHORE, 80 YARDS NW OF CUT IN
 HV5846'SHORE, AND 40 YARDS S BY E OF LEFT ONE OF NINE LARGE PINE TREES.
 HV5846'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5846'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5846'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5846'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE
 HV5846'MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP
 HV5846'2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS
 HV5846'TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT PEAK OF LONG
 HV5846'BARN, 1/2 MILE, S 5 DEG 55 MIN W.  LEFT PEAK OF HOUSE, 1/2 MILE,
 HV5846'S 44 DEG 34 MIN W.  LEFT PEAK OF BARN, 1-1/4 MILES, N 70 DEG 38
 HV5846'MIN W. SPINDLE ON LEFT ONE OF FOUR CUPOLAS, 1/2 MILE, N 34 DEG 16
 HV5846'MIN W. LEFT CORNER OF UNDERPINNING OF GOLDSBOROUGHS HOUSE, 300
 HV5846'YARDS, N 75 DEG 14 MIN E.  RIGHT CORNER OF LARGE CHIMNEY, 1/8
 HV5846'MILE, S 63 DEG 0 MIN E.
 HV5846
 HV5846                          STATION RECOVERY (1940)
 HV5846
 HV5846'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5846'STATION MARK RECOVERED IN GOOD CONDITION, FLUSH WITH SURFACE OF
 HV5846'MARSH.  ALL REFERENCE TREES MENTIONED IN THE ORIGINAL DESCRIPTION
 HV5846'HAVE BEEN DESTROYED.
 HV5846'
 HV5846'STATION IS ON THE NORTHERN SHORE OF TRIPPE CREEK, ABOUT 1-3/4
 HV5846'MILES FROM WHERE TRIPPE CREEK ENTERS TRED AVON RIVER, 300 YARDS W
 HV5846'BY N OF COLONIAL HOUSE, 1 FOOT ABOVE HIGH WATER, 28.5 METERS SE OF
 HV5846'SHORE, 26.0 METERS E OF SHORE, AND 23.7 METERS NE OF SHORE.
 HV5846
 HV5846                          STATION RECOVERY (1973)
 HV5846
 HV5846'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV5846'STATION MARK RECOVERED IN GOOD CONDITION.  NOTE THE FOLLOWING
 HV5846'CHANGES--STATION 28 YARDS SE OF SHORE, NOT 35 YARDS.  22 YARDS E
 HV5846'OF SHORE, NOT 35 YARDS.  AND 33 YARDS NW OF POINT.  WITNESS POST
 HV5846'AND SIGN PLACED 6 INCHES N OF STATION.  COPPERWELD STAKE REMOVED.
 HV5846'STATION IS 53 FEET NE OF DUCKBLIND ON POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8028 ***********************************************************************
 AJ8028  DESIGNATION -  ALLEGANY CC GPS BASE STATION
 AJ8028  PID         -  AJ8028
 AJ8028  STATE/COUNTY-  MD/ALLEGANY
 AJ8028  COUNTRY     -  US
 AJ8028  USGS QUAD   -  EVITTS CREEK (2016)
 AJ8028
 AJ8028                         *CURRENT SURVEY CONTROL
 AJ8028  ______________________________________________________________________
 AJ8028* NAD 83(2011) POSITION- 39 39 13.88886(N) 078 43 50.50345(W)   ADJUSTED
 AJ8028* NAD 83(2011) ELLIP HT-   175.746 (meters)        (06/27/12)   ADJUSTED
 AJ8028* NAD 83(2011) EPOCH   -  2010.00
 AJ8028* NAVD 88 ORTHO HEIGHT -   208.5   (meters)      684.    (feet) GPS OBS
 AJ8028  ______________________________________________________________________
 AJ8028  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8028  GEOID HEIGHT    -        -32.779 (meters)                     GEOID99
 AJ8028  GEOID HEIGHT    -        -32.788 (meters)                     GEOID18
 AJ8028  NAD 83(2011) X  -    960,973.374 (meters)                     COMP
 AJ8028  NAD 83(2011) Y  - -4,822,646.747 (meters)                     COMP
 AJ8028  NAD 83(2011) Z  -  4,048,582.204 (meters)                     COMP
 AJ8028  LAPLACE CORR    -         -4.17  (seconds)                    DEFLEC18
 AJ8028
 AJ8028  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8028  Standards:
 AJ8028         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8028            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8028  -------------------------------------------------------------------
 AJ8028  NETWORK    0.14   0.25           0.06   0.05   0.13     -0.03224630
 AJ8028  -------------------------------------------------------------------
 AJ8028  Click here for local accuracies and other accuracy information.
 AJ8028
 AJ8028.The horizontal coordinates were established by GPS observations
 AJ8028.and adjusted by the National Geodetic Survey in June 2012.
 AJ8028
 AJ8028.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8028.been affixed to the stable North American tectonic plate. See 
 AJ8028.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8028
 AJ8028.The horizontal coordinates are valid at the epoch date displayed above
 AJ8028.which is a decimal equivalence of Year/Month/Day.
 AJ8028
 AJ8028.The orthometric height was determined by GPS observations and a
 AJ8028.high-resolution geoid model.
 AJ8028
 AJ8028.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8028.GEOID18 height accuracy estimate available here.
 AJ8028
 AJ8028.Click photographs - Photos may exist for this station.
 AJ8028
 AJ8028.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8028
 AJ8028.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8028
 AJ8028.The ellipsoidal height was determined by GPS observations
 AJ8028.and is referenced to NAD 83.
 AJ8028
 AJ8028. The following values were computed from the NAD 83(2011) position.
 AJ8028
 AJ8028;                    North         East     Units Scale Factor Converg.
 AJ8028;SPC MD       -   222,005.669   251,468.374   MT  1.00004203   -1 05 10.5
 AJ8028;SPC MD       -   728,363.60    825,025.82   sFT  1.00004203   -1 05 10.5
 AJ8028;UTM  17      - 4,391,801.115   694,691.242   MT  1.00006669   +1 26 55.0
 AJ8028
 AJ8028!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8028!SPC MD       -   0.99997243  x   1.00004203  =   1.00001446
 AJ8028!UTM  17      -   0.99997243  x   1.00006669  =   1.00003912
 AJ8028
 AJ8028_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9469191801(NAD 83)
 AJ8028
 AJ8028                          SUPERSEDED SURVEY CONTROL
 AJ8028
 AJ8028  NAD 83(2007)-  39 39 13.88904(N)    078 43 50.50415(W) AD(2002.00) 0
 AJ8028  ELLIP H (02/10/07)  175.765  (m)                       GP(2002.00)    
 AJ8028  NAD 83(1991)-  39 39 13.88925(N)    078 43 50.50486(W) AD(       ) A
 AJ8028  ELLIP H (02/12/02)  175.778  (m)                       GP(       ) 4 1
 AJ8028
 AJ8028.Superseded values are not recommended for survey control.
 AJ8028
 AJ8028.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8028.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8028
 AJ8028_MARKER: Z = SEE DESCRIPTION
 AJ8028_SETTING: 0 = UNSPECIFIED SETTING
 AJ8028_MARK LOGO: NONE
 AJ8028_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8028_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8028+STABILITY: SURFACE MOTION
 AJ8028_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8028+SATELLITE: SATELLITE OBSERVATIONS - 2000
 AJ8028
 AJ8028  HISTORY     - Date     Condition        Report By
 AJ8028  HISTORY     - 2000     MONUMENTED       MD-003
 AJ8028
 AJ8028                          STATION DESCRIPTION
 AJ8028
 AJ8028'DESCRIBED BY ANNE ARUNDEL COUNTY MARYLAND 2000 (SR)
 AJ8028'STATION IS LOCATED ON THE CAMPUS OF ALLEGANY COLLEGE LOCATED ABOUT 2.5
 AJ8028'KM (1.55 MI) EAST OF THE CENTER OF THE CITY OF CUMBERLAND, MARYLAND.
 AJ8028'TO REACH FROM THE WESTBOUND LANES OF I 68 TAKE EXIT 44 WHICH IS THE
 AJ8028'JUNCTION OF INTERSTATE 68 AND US HIGHWAY 40A ALSO KNOWN AS WILLOWBROOK
 AJ8028'ROAD.  FROM THE EXIT RAMP DRIVE SOUTH ON WILLOWBROOK FOR ABOUT 1.5 KM
 AJ8028'(0.95 MI) TO THE COLLEGE ENTRANCE ROAD ON THE LEFT. FOLLOW THE
 AJ8028'ENTRANCE ROAD NORTH THEN LEFT INTO THE FIRST PARKING AREA ON THE LEFT
 AJ8028'THEN CONTINUE FOR A TOTAL OF ABOUT 0.5 KM (0.30 MI) TO THE ANTENNA
 AJ8028'MOUNTED TO THE THE WEST SIDE OF A BUILDING JUST NORTH OF THE MAIN
 AJ8028'ENTRANCE TO THE BUILDING.  STATION IS THE ANTENNA REFERENCE POINT OF A
 AJ8028'GPS ANTENNA ATTACHED TO THE TOP OF A METAL POLE MOUNTED TO THE SIDE OF
 AJ8028'THE BRICK BUILDING HOUSING THE FORESTRY DEPARTMENT.  FOR STATION
 AJ8028'INFORMATION CONTACT MR STEVE RESH, FORESTRY DEPARTMENT HEAD AT
 AJ8028'301.784.5307.  SITE IS A COOPERATIVE CORS.  WEB SITE ADDRESS IS
 AJ8028'WWW.NGS.NOAA.GOV/CORS/COOP/MARYLAND/
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5755 ***********************************************************************
 JV5755  DESIGNATION -  ALLEN
 JV5755  PID         -  JV5755
 JV5755  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5755  COUNTRY     -  US
 JV5755  USGS QUAD   -  ROUND BAY (2016)
 JV5755
 JV5755                         *CURRENT SURVEY CONTROL
 JV5755  ______________________________________________________________________
 JV5755* NAD 83(1991) POSITION- 39 03 57.95524(N) 076 31 37.06943(W)   ADJUSTED
 JV5755* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV5755  ______________________________________________________________________
 JV5755  GEOID HEIGHT    -        -33.144 (meters)                     GEOID18
 JV5755  LAPLACE CORR    -         -4.09  (seconds)                    DEFLEC18
 JV5755  HORZ ORDER      -  SECOND
 JV5755
 JV5755.The horizontal coordinates were established by classical geodetic methods
 JV5755.and adjusted by the National Geodetic Survey in January 1992.
 JV5755
 JV5755.The orthometric height was scaled from a topographic map.
 JV5755
 JV5755.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5755.GEOID18 height accuracy estimate available here.
 JV5755
 JV5755.Click photographs - Photos may exist for this station.
 JV5755
 JV5755.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5755
 JV5755. The following values were computed from the NAD 83(1991) position.
 JV5755
 JV5755;                    North         East     Units Scale Factor Converg.
 JV5755;SPC MD       -   155,449.950   440,937.266   MT  0.99995535   +0 17 48.8
 JV5755;SPC MD       -   510,005.38  1,446,641.68   sFT  0.99995535   +0 17 48.8
 JV5755;UTM  18      - 4,325,221.184   367,897.390   MT  0.99981488   -0 57 44.8
 JV5755
 JV5755!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5755!SPC MD       -   1.00000383  x   0.99995535  =   0.99995918
 JV5755!UTM  18      -   1.00000383  x   0.99981488  =   0.99981871
 JV5755
 JV5755:                Primary Azimuth Mark                     Grid Az
 JV5755:SPC MD       -  DEL                                      025 41 21.5
 JV5755:UTM  18      -  DEL                                      026 56 55.1
 JV5755
 JV5755_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6789725221(NAD 83)
 JV5755
 JV5755|---------------------------------------------------------------------|
 JV5755| PID    Reference Object                     Distance      Geod. Az  |
 JV5755|                                                           dddmmss.s |
 JV5755| JV5777 DEL                                 APPROX. 1.9 KM 0255910.3 |
 JV5755| CA9873 ALLEN RM                             11.720 METERS 28333     |
 JV5755|---------------------------------------------------------------------|
 JV5755
 JV5755                          SUPERSEDED SURVEY CONTROL
 JV5755
 JV5755  NAD 83(1986)-  39 03 57.95148(N)    076 31 37.07984(W) AD(       ) 2
 JV5755  NAD 27      -  39 03 57.55300(N)    076 31 38.22000(W) AD(       ) 2
 JV5755
 JV5755.Superseded values are not recommended for survey control.
 JV5755
 JV5755.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5755.See file dsdata.pdf to determine how the superseded data were derived.
 JV5755
 JV5755_MARKER: DS = TRIANGULATION STATION DISK
 JV5755_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5755_STAMPING: ALLEN 1933
 JV5755_MARK LOGO: CGS
 JV5755_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5755+STABILITY: SURFACE MOTION
 JV5755
 JV5755  HISTORY     - Date     Condition        Report By
 JV5755  HISTORY     - 1933     MONUMENTED       CGS
 JV5755  HISTORY     - 1956     MARK NOT FOUND   DMA
 JV5755
 JV5755                          STATION DESCRIPTION
 JV5755
 JV5755'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5755'STATION IS ABOUT 860 METERS SW OF THE S SHORE OF THE MAGOTHY
 JV5755'RIVER, ON A NECK BETWEEN CYPRESS CREEK AND DIVIDING CREEK, ABOUT
 JV5755'350 METERS SE OF THE SE SHORE OF THE E BRANCH OF CYPRESS CREEK,
 JV5755'ABOUT 330 METERS NW OF THE NW END OF THE W BRANCH OF DIVIDING
 JV5755'CREEK, 37.2 METERS (122 FEET) N OF CENTER LINE OF A ROAD, ABOUT
 JV5755'160 METERS W OF A ROAD, IN A CLEARED FIELD WHICH HAS BEEN
 JV5755'SUBDIVIDED.
 JV5755'
 JV5755'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5755'CONCRETE.
 JV5755'
 JV5755'BOTH STATION AND REFERENCE MARKS ARE SET FLUSH WITH THE SURFACE
 JV5755'OF THE GROUND.
 JV5755'
 JV5755'DISTANCE AND BEARING FROM THE STATION TO AN ELECTRIC POLE IS
 JV5755'AS FOLLOWS--42.6 METERS (139.8 FEET), S 39 DEG 52 MIN W.
 JV5755'
 JV5755'THE STATION IS BEST APPROACHED BY ROAD, TURNING N AT JONES
 JV5755'STATION ON CRYSTAL BEACH ROAD 0.6 MILE TO CROSS ROAD, THEN W
 JV5755'0.1 MILE.  STATION IS ON THE N SIDE OF THE ROAD.
 JV5755
 JV5755                          STATION RECOVERY (1956)
 JV5755
 JV5755'RECOVERY NOTE BY DEFENSE MAP AGENCY 1956
 JV5755'STATION PROBABLY DESTROYED.  AREA NOW IS PART OF A HOUSING
 JV5755'DEVELOPMENT.  CONCRETE MONUMENT WITHOUT DISK FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5811 ***********************************************************************
 HV5811  DESIGNATION -  ALLER
 HV5811  PID         -  HV5811
 HV5811  STATE/COUNTY-  MD/QUEEN ANNES
 HV5811  COUNTRY     -  US
 HV5811  USGS QUAD   -  QUEENSTOWN (2016)
 HV5811
 HV5811                         *CURRENT SURVEY CONTROL
 HV5811  ______________________________________________________________________
 HV5811* NAD 83(1991) POSITION- 38 53 39.57540(N) 076 10 06.00598(W)   ADJUSTED
 HV5811* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5811  ______________________________________________________________________
 HV5811  GEOID HEIGHT    -        -34.175 (meters)                     GEOID18
 HV5811  LAPLACE CORR    -         -4.43  (seconds)                    DEFLEC18
 HV5811  HORZ ORDER      -  THIRD
 HV5811
 HV5811.The horizontal coordinates were established by classical geodetic methods
 HV5811.and adjusted by the National Geodetic Survey in January 1992.
 HV5811
 HV5811.The orthometric height was scaled from a topographic map.
 HV5811
 HV5811.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5811.GEOID18 height accuracy estimate available here.
 HV5811
 HV5811.Click photographs - Photos may exist for this station.
 HV5811
 HV5811.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5811
 HV5811. The following values were computed from the NAD 83(1991) position.
 HV5811
 HV5811;                    North         East     Units Scale Factor Converg.
 HV5811;SPC MD       -   136,604.138   472,146.576   MT  0.99994990   +0 31 19.1
 HV5811;SPC MD       -   448,175.41  1,549,034.22   sFT  0.99994990   +0 31 19.1
 HV5811;UTM  18      - 4,305,698.658   398,680.010   MT  0.99972641   -0 44 01.1
 HV5811
 HV5811!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5811!SPC MD       -   1.00000524  x   0.99994990  =   0.99995514
 HV5811!UTM  18      -   1.00000524  x   0.99972641  =   0.99973165
 HV5811
 HV5811:                Primary Azimuth Mark                     Grid Az
 HV5811:SPC MD       -  TWIST                                    179 49 33.4
 HV5811:UTM  18      -  TWIST                                    181 04 53.6
 HV5811
 HV5811_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9868005698(NAD 83)
 HV5811
 HV5811|---------------------------------------------------------------------|
 HV5811| PID    Reference Object                     Distance      Geod. Az  |
 HV5811|                                                           dddmmss.s |
 HV5811| HV5765 TWIST                               APPROX. 0.7 KM 1802052.5 |
 HV5811| HV5800 CHIN                                290.331 METERS 31657     |
 HV5811|---------------------------------------------------------------------|
 HV5811
 HV5811                          SUPERSEDED SURVEY CONTROL
 HV5811
 HV5811  NAD 83(1986)-  38 53 39.57078(N)    076 10 06.01908(W) AD(       ) 3
 HV5811  NAD 27      -  38 53 39.14400(N)    076 10 07.19100(W) AD(       ) 3
 HV5811  USSD        -  38 53 39.53900(N)    076 10 06.96500(W) AD(       ) 3
 HV5811
 HV5811.Superseded values are not recommended for survey control.
 HV5811
 HV5811.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5811.See file dsdata.pdf to determine how the superseded data were derived.
 HV5811
 HV5811_MARKER: Z = SEE DESCRIPTION
 HV5811_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5811_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5811+STABILITY: SURFACE MOTION
 HV5811
 HV5811  HISTORY     - Date     Condition        Report By
 HV5811  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5811  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5811
 HV5811                          STATION DESCRIPTION
 HV5811
 HV5811'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5811'STATION IS ON WYE ISLAND ON THE EASTERN SHORE OF THE BRANCH OF WYE
 HV5811'RIVER BOUNDING WYE ISLAND ON THE W ABOUT 1 MILE ENE OF DRUM POINT,
 HV5811'AND AT NORTHERN SIDE OF ENTRANCE TO A COVE, ON MARSH LAND, BETWEEN
 HV5811'TWO LARGE PINE TREES, ABOUT 1 FOOT ABOVE HIGH WATER, 17 YARDS NE
 HV5811'OF A SMALL POINT, 15 YARDS SE OF A SHORT CUT INSHORE, AND 9 YARDS
 HV5811'SW OF CULTIVATED LAND.  STATION IS MARKED BY A HOLE IN THE CENTER
 HV5811'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV5811'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV5811'6 INCHES ABOVE SURFACE OF GROUND. THE LETTERS M.S.F.C. AND
 HV5811'U.S.C.S. ARE COUNTER-SUNK IN THE TOP OF POST.  SUBSURFACE MARK IS
 HV5811'CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES
 HV5811'BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV5811'POINTS OF REFERENCE ARE AS FOLLOWS--CUPOLA OF BUILDING, 1 MILE, S
 HV5811'12 DEG 29 MIN W.  LEFT PEAK OF HOUSE, 1-3/8 MILES, S 29 DEG 27
 HV5811'MIN W.  PEAK BETWEEN TWO CHIMNEYS OF LARGE HOUSE, 2-1/4 MILES, S
 HV5811'42 DEG 43 MIN W.  CHIMNEY OUTSIDE LEFT END OF HOUSE, 1-1/8 MILES,
 HV5811'S 55 DEG 43 MIN W.  RIGHT CORNER OF HOUSE, 3/8 MILE, S 76 DEG 45
 HV5811'MIN W. NAIL IN BLAZE IN 20-INCH PINE TREE, 20.90 METERS (68.6
 HV5811'FEET), N 38 DEG 30 MIN W.  PEAK OF SIDE GABLE OF HOUSE, 1/4 MILE,
 HV5811'N 75 DEG 27 MIN E.  NEAR CORNER OF HOUSE, 5/8 MILE, S 80 DEG 22
 HV5811'MIN E.  NAIL IN BLAZE IN 18-INCH PINE TREE, 28.52 METERS (93.6
 HV5811'FEET), S 79 DEG 49 MIN E.  LEFT TANGENT OF LARGE SQUARE CHIMNEY OF
 HV5811'HOUSE, 3/8 MILE, S 46 DEG 33 MIN E.
 HV5811
 HV5811                          STATION RECOVERY (1940)
 HV5811
 HV5811'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5811'STATION MARK SEARCHED FOR BUT NOT FOUND.  REFERENCE TREES NO
 HV5811'LONGER EXIST.  PART OF STUMPS VISIBLE AT WATERS EDGE.  THERE IS
 HV5811'EVIDENCE OF CONSIDERABLE EROSION AND IT IS THEREFORE, POSSIBLE
 HV5811'THAT MARK HAS BEEN WASHED OUT OR COVERED OVER BY EARTH FROM NEARBY
 HV5811'ERODING BANK.  AZIMUTHS TO DISTANT HOUSES COULD NOT BE CHECKED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6217 ***********************************************************************
 HV6217  DESIGNATION -  ALLEY
 HV6217  PID         -  HV6217
 HV6217  STATE/COUNTY-  MD/QUEEN ANNES
 HV6217  COUNTRY     -  US
 HV6217  USGS QUAD   -  QUEENSTOWN (2016)
 HV6217
 HV6217                         *CURRENT SURVEY CONTROL
 HV6217  ______________________________________________________________________
 HV6217* NAD 83(1991) POSITION- 38 55 31.91114(N) 076 14 59.28481(W)   ADJUSTED
 HV6217* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6217  ______________________________________________________________________
 HV6217  GEOID HEIGHT    -        -33.874 (meters)                     GEOID18
 HV6217  LAPLACE CORR    -         -4.59  (seconds)                    DEFLEC18
 HV6217  HORZ ORDER      -  SECOND
 HV6217
 HV6217.The horizontal coordinates were established by classical geodetic methods
 HV6217.and adjusted by the National Geodetic Survey in January 1992.
 HV6217
 HV6217.The orthometric height was scaled from a topographic map.
 HV6217
 HV6217.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6217.GEOID18 height accuracy estimate available here.
 HV6217
 HV6217.Click photographs - Photos may exist for this station.
 HV6217
 HV6217.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6217
 HV6217. The following values were computed from the NAD 83(1991) position.
 HV6217
 HV6217;                    North         East     Units Scale Factor Converg.
 HV6217;SPC MD       -   140,006.732   465,051.109   MT  0.99995022   +0 28 15.1
 HV6217;SPC MD       -   459,338.75  1,525,755.18   sFT  0.99995022   +0 28 15.1
 HV6217;UTM  18      - 4,309,255.189   391,662.331   MT  0.99974453   -0 47 07.2
 HV6217
 HV6217!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6217!SPC MD       -   1.00000504  x   0.99995022  =   0.99995526
 HV6217!UTM  18      -   1.00000504  x   0.99974453  =   0.99974957
 HV6217
 HV6217:                Primary Azimuth Mark                     Grid Az
 HV6217:SPC MD       -  ALLEY AZ MK                              244 16 46.8
 HV6217:UTM  18      -  ALLEY AZ MK                              245 32 09.1
 HV6217
 HV6217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9166209255(NAD 83)
 HV6217
 HV6217|---------------------------------------------------------------------|
 HV6217| PID    Reference Object                     Distance      Geod. Az  |
 HV6217|                                                           dddmmss.s |
 HV6217| CX2032 ALLEY RM 1                           20.695 METERS 06244     |
 HV6217| HV5759 PARSON I WINDMILL                   APPROX. 1.8 KM 1713601.5 |
 HV6217| CX2033 ALLEY RM 2                           25.338 METERS 18233     |
 HV6217| CX2031 ALLEY AZ MK                                        2444501.9 |
 HV6217|---------------------------------------------------------------------|
 HV6217
 HV6217                          SUPERSEDED SURVEY CONTROL
 HV6217
 HV6217  NAD 83(1986)-  38 55 31.90681(N)    076 14 59.29737(W) AD(       ) 2
 HV6217  NAD 27      -  38 55 31.49000(N)    076 15 00.47400(W) AD(       ) 2
 HV6217  USSD        -  38 55 31.88500(N)    076 15 00.26100(W) AD(       ) 3
 HV6217
 HV6217.Superseded values are not recommended for survey control.
 HV6217
 HV6217.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6217.See file dsdata.pdf to determine how the superseded data were derived.
 HV6217
 HV6217_MARKER: U = CONCRETE POST
 HV6217_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6217_SP_SET: OBJECT DRIVEN INTO GROUND
 HV6217
 HV6217  HISTORY     - Date     Condition        Report By
 HV6217  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6217  HISTORY     - 1938     GOOD             CGS
 HV6217  HISTORY     - 1961     GOOD             CGS
 HV6217
 HV6217                          STATION DESCRIPTION
 HV6217
 HV6217'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6217'STATION IS ON THE WESTERN SHORE OF PROSPECT BAY, ON CRAB ALLEY
 HV6217'NECK, ABOUT 3/4 MILE N OF PARSONS ISLAND, AND 3/8 MILE N OF
 HV6217'NARROWS POINT, ON HARD GROUND IN MARSH AT NE END OF CLUMP OF
 HV6217'12 PERSIMMON TREES, ABOUT 1 FOOT ABOVE HIGH WATER AND 75 YARDS
 HV6217'SW OF POINT.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF
 HV6217'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6217'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6217'ABOUT 4 INCHES.  THE LETTERS M.S.F.S. AND U.S.C.S. ARE
 HV6217'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF
 HV6217'2-INCH DRAINTILE PIPE BURIED WITH THE TOP 2 INCHES OF THE BASE
 HV6217'OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV6217'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 3-INCH PERSIMMON
 HV6217'TREE, 4.88 METERS (16.01 FEET), S 12 DEG 21 MIN W.  NAIL IN
 HV6217'BLAZE IN 3-INCH PERSIMMON TREE, 3.70 METERS (12.14 FEET),
 HV6217'S 55 DEG 50 MIN W.  E CHIMNEY OF BRICK HOUSE, 1/2 MILE, S 63 DEG
 HV6217'27 MIN W.  NAIL IN BLAZE IN 3-INCH PERSIMMON TREE, 3.29 METERS
 HV6217'(10.79 FEET), N 64 DEG 14 MIN W.  CHIMNEY OF HOUSE AMONG TREES,
 HV6217'1-1/2 MILES, N 44 DEG 41 MIN W.  NAIL IN BLAZE IN 4-INCH
 HV6217'PERSIMMON TREE, 3.99 METERS (13.09 FEET), N 28 DEG 06 MIN E.  LEFT
 HV6217'CHIMNEY OF OLD HOUSE WITH TWO DORMER WINDOWS, 2-3/8
 HV6217'MILES, N 45 DEG 54 MIN E.  LEFT PEAK OF BARN, 2-3/4 MILES, N 77 DEG
 HV6217'07 MIN E.  LEFT CHIMNEY OF LARGE HOUSE, 2-3/4 MILES, S 69 DEG 01
 HV6217'MIN E.
 HV6217
 HV6217                          STATION RECOVERY (1938)
 HV6217
 HV6217'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV6217'RECOVERED IN GOOD ORDER.  STATION IS ORIGINAL M.S.F.S. STATION
 HV6217'MARKED BY STANDARD M.S.F.S. MONUMENT PROJECTING ABOUT 3 INCHES
 HV6217'ABOVE SURFACE OF MARSHLAND.  LOCATED ON WESTERN SHORE OF PROSPECT
 HV6217'BAY, ON CRAB ALLEY NECK, ABOUT 3/8 MILE N OF NARROWS POINT ON
 HV6217'PROPERTY OWNED BY NORMANS POINT GUN CLUB.  STATION IS 28 METERS
 HV6217'E OF E EDGE OF SMALL POND, 3-1/2 METERS E OF PERSIMMON TREE
 HV6217'STUMP AND 49 METERS W OF HIGH WATER.  TWO STANDARD REFERENCE
 HV6217'MARKS ESTABLISHED - REFERENCE MARK NO.1, STAMPED ALLEY, NO.1,
 HV6217'1938 SET IN 12-INCH SQUARE CONCRETE BLOCK PROJECTING 4 INCHES
 HV6217'ABOVE SURFACE AND IS S OF STATION IN MARSH AND PROJECTS ABOUT
 HV6217'5 INCHES ABOVE SURFACE.
 HV6217'
 HV6217'AZIMUTH MARK, STAMPED AZ. MK., ALLEY, 1938, IS STANDARD
 HV6217'REFERENCE MARK DISK SET IN 12-INCH SQUARE CONCRETE BLOCK PROJECTING
 HV6217'ABOUT 5 INCHES ABOVE SURFACE OF GROUND ON N-S FENCE LINE 0.3
 HV6217'MILE WSW OF STATION AND ABOUT 0.1 MILE N OF GATE AT SW CORNER OF
 HV6217'FIELD.
 HV6217'
 HV6217'REACHED FROM KENT ISLAND NARROWS BRIDGE VIA U.S. HIGHWAY 404
 HV6217'GOING W 2.0 MILES TO SIGN READING, CHESTER - DOMINION 2, TURN
 HV6217'LEFT, GO 1.7 MILES, TURN LEFT AND GO 2.4 MILES ON MAIN-TRAVELED
 HV6217'ROAD TO CRAB ALLEY NECK AND NORMANS POINT GUN CLUB GATE ENTRANCE,
 HV6217'TURN LEFT THROUGH WOODEN GATE INTO SMALL LANE, PASSING THROUGH
 HV6217'SECOND GATE, TURN LEFT AROUND BARN, PROCEED E TO OPENING IN
 HV6217'FENCE AT WATERS EDGE, TURN LEFT THROUGH OPENING AND PROCEED 0.3
 HV6217'MILE TO NE CORNER OF FIELD WHERE IT BORDERS MARSHLAND AND
 HV6217'OPENING AT CORNER OF FENCE BORDERING FIELD, PROCEED THROUGH
 HV6217'OPENING FOR 0.15 MILE TOWARDS SMALL POND AND STATION.
 HV6217
 HV6217                          STATION RECOVERY (1961)
 HV6217
 HV6217'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6217'STATION MARK AND REFERENCE MARKS NO.1 AND 2 WERE RECOVERED IN
 HV6217'GOOD CONDITION.  STATION WAS VISITED BY BOAT AND THE AZIMUTH MARK
 HV6217'WAS NOT VISITED.
 HV6217'
 HV6217'THE PUBLISHED DESCRIPTION IS ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6564 ***********************************************************************
 JV6564  DESIGNATION -  ALLS 2
 JV6564  PID         -  JV6564
 JV6564  STATE/COUNTY-  MD/MONTGOMERY
 JV6564  COUNTRY     -  US
 JV6564  USGS QUAD   -  ROCKVILLE (2016)
 JV6564
 JV6564                         *CURRENT SURVEY CONTROL
 JV6564  ______________________________________________________________________
 JV6564* NAD 83(1993) POSITION- 39 04 26.62982(N) 077 09 51.17251(W)   ADJUSTED
 JV6564* NAVD 88 ORTHO HEIGHT -   137.96  (meters)      452.6   (feet) RESET
 JV6564  ______________________________________________________________________
 JV6564  GEOID HEIGHT    -        -31.717 (meters)                     GEOID18
 JV6564  LAPLACE CORR    -         -1.40  (seconds)                    DEFLEC18
 JV6564  HORZ ORDER      -  THIRD
 JV6564  VERT ORDER      -  THIRD
 JV6564
 JV6564.The horizontal coordinates were established by classical geodetic methods
 JV6564.and adjusted by the National Geodetic Survey in November 1994.
 JV6564
 JV6564.The orthometric height was computed from unverified reset data.
 JV6564
 JV6564.No vertical observational check was made to the station.
 JV6564
 JV6564.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6564.GEOID18 height accuracy estimate available here.
 JV6564
 JV6564.Click photographs - Photos may exist for this station.
 JV6564
 JV6564.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6564
 JV6564. The following values were computed from the NAD 83(1993) position.
 JV6564
 JV6564;                    North         East     Units Scale Factor Converg.
 JV6564;SPC MD       -   156,240.894   385,790.159   MT  0.99995582   -0 06 11.0
 JV6564;SPC MD       -   512,600.33  1,265,713.21   sFT  0.99995582   -0 06 11.0
 JV6564;UTM  18      - 4,327,224.895   312,783.150   MT  1.00003160   -1 21 52.4
 JV6564
 JV6564!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6564!SPC MD       -   0.99998333  x   0.99995582  =   0.99993915
 JV6564!UTM  18      -   0.99998333  x   1.00003160  =   1.00001493
 JV6564
 JV6564_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1278327224(NAD 83)
 JV6564
 JV6564                          SUPERSEDED SURVEY CONTROL
 JV6564
 JV6564  NAD 83(1991)-  39 04 26.62940(N)    077 09 51.17331(W) AD(       ) 3
 JV6564  NAD 83(1986)-  39 04 26.62931(N)    077 09 51.18305(W) AD(       ) 3
 JV6564  NGVD 29 (11/18/05)  138.19   (m)          453.4    (f) RESET       3  
 JV6564  NGVD 29             138.18   (m)          453.3    (f) LEVELING    3  
 JV6564
 JV6564.Superseded values are not recommended for survey control.
 JV6564
 JV6564.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6564.See file dsdata.pdf to determine how the superseded data were derived.
 JV6564
 JV6564_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6564_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV6564_SP_SET: BRIDGE DECK ON THE ABUTMENT
 JV6564_STAMPING: ALLS 2 1988
 JV6564_MARK LOGO: NGS
 JV6564_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6564_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6564_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6564+SATELLITE: SATELLITE OBSERVATIONS - December 01, 2009
 JV6564
 JV6564  HISTORY     - Date     Condition        Report By
 JV6564  HISTORY     - 1988     MONUMENTED       NGS
 JV6564  HISTORY     - 20070519 GOOD             GEOCAC
 JV6564  HISTORY     - 20091201 GOOD             NGS
 JV6564
 JV6564                          STATION DESCRIPTION
 JV6564
 JV6564'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 JV6564'THE STATION IS LOCATED ABOUT 2.5 KM (1.55 MI) SOUTHWEST OF THE CENTER
 JV6564'OF ROCKVILLE AND IN THE SOUTHEAST PART OF A HIGHWAY BRIDGE FOR THE
 JV6564'EAST BOUND LANE OF FALLS ROAD WHERE IT CROSSES OVER INTERSTATE HIGHWAY
 JV6564'270.  IT IS ON THE NORTH SIDE OF A CONCRETE ISLAND WHICH SEPARATES THE
 JV6564'EAST BOUND LANE OF FALLS ROAD AND A EXIT RAMP FOR EAST BOUND FALLS
 JV6564'ROAD ONTO NORTH BOUND INTERSTATE HIGHWAY 270.  OWNERSHIP--ROAD
 JV6564'RIGHT-OF-WAY.
 JV6564'NO TO REACH IS NECESSARY.
 JV6564'THE DISK IS SET IN A DRILL HOLE WHICH IS FLUSH WITH THE BRIDGE DECK
 JV6564'AND DIRECTLY OVER THE ABUTMENT.  IT IS 4.7 M (15.4 FT) SOUTH OF THE
 JV6564'CENTER OF THE EAST BOUND LANE OF FALLS ROAD, 15.02 M (49.3 FT) NORTH
 JV6564'OF THE SOUTH CURB OF THE EXIT RAMP, 3.94 M (12.9 FT) EAST-NORTHEAST OF
 JV6564'THE MOST WESTERLY POINT OF THE CONCRETE ISLAND, 7.45 M (24.4 FT)
 JV6564'NORTHWEST OF THE CENTER OF A METAL COVER OF A UTILITY BOX, 0.15 M
 JV6564'(0.5 FT) WEST OF THE MOST EASTERLY EXPANSION JOINT FOR THE BRIDGE AND
 JV6564'0.1 M (0.3 FT) NORTH OF THE NORTH SIDE OF THE CONCRETE ISLAND.
 JV6564
 JV6564                          STATION RECOVERY (2007)
 JV6564
 JV6564'RECOVERY NOTE BY GEOCACHING 2007 (APC)
 JV6564'RECOVERED IN GOOD CONDITION.
 JV6564
 JV6564                          STATION RECOVERY (2009)
 JV6564
 JV6564'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV6564'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6565 ***********************************************************************
 JV6565  DESIGNATION -  ALLS AZ MK
 JV6565  PID         -  JV6565
 JV6565  STATE/COUNTY-  MD/MONTGOMERY
 JV6565  COUNTRY     -  US
 JV6565  USGS QUAD   -  ROCKVILLE (2016)
 JV6565
 JV6565                         *CURRENT SURVEY CONTROL
 JV6565  ______________________________________________________________________
 JV6565* NAD 83(1993) POSITION- 39 04 35.46512(N) 077 09 48.20101(W)   ADJUSTED
 JV6565* NAVD 88 ORTHO HEIGHT -   129.2   (meters)      424.    (feet) VERTCON3
 JV6565  ______________________________________________________________________
 JV6565  GEOID HEIGHT    -        -31.717 (meters)                     GEOID18
 JV6565  LAPLACE CORR    -         -1.37  (seconds)                    DEFLEC18
 JV6565  HORZ ORDER      -  THIRD
 JV6565
 JV6565.The horizontal coordinates were established by classical geodetic methods
 JV6565.and adjusted by the National Geodetic Survey in November 1994.
 JV6565
 JV6565.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6565.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6565
 JV6565.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6565.GEOID18 height accuracy estimate available here.
 JV6565
 JV6565.Click photographs - Photos may exist for this station.
 JV6565
 JV6565.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6565
 JV6565. The following values were computed from the NAD 83(1993) position.
 JV6565
 JV6565;                    North         East     Units Scale Factor Converg.
 JV6565;SPC MD       -   156,513.217   385,862.071   MT  0.99995597   -0 06 09.2
 JV6565;SPC MD       -   513,493.78  1,265,949.14   sFT  0.99995597   -0 06 09.2
 JV6565;UTM  18      - 4,327,495.589   312,861.047   MT  1.00003124   -1 21 50.8
 JV6565
 JV6565!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6565!SPC MD       -   0.99998471  x   0.99995597  =   0.99994068
 JV6565!UTM  18      -   0.99998471  x   1.00003124  =   1.00001595
 JV6565
 JV6565_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1286127495(NAD 83)
 JV6565
 JV6565                          SUPERSEDED SURVEY CONTROL
 JV6565
 JV6565  NAD 83(1991)-  39 04 35.46471(N)    077 09 48.20179(W) AD(       ) 3
 JV6565  NAD 83(1986)-  39 04 35.46462(N)    077 09 48.21153(W) AD(       ) 3
 JV6565  NGVD 29 (02/12/91)  129.4    (m)          425.     (f) VERT ANG       
 JV6565
 JV6565.Superseded values are not recommended for survey control.
 JV6565
 JV6565.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6565.See file dsdata.pdf to determine how the superseded data were derived.
 JV6565
 JV6565_MARKER: S = SPIKE
 JV6565_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6565_SP_SET: STREET SIDEWALK
 JV6565_MARK LOGO: MDSHA
 JV6565_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6565_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6565
 JV6565  HISTORY     - Date     Condition        Report By
 JV6565  HISTORY     - 1988     MONUMENTED       MDSHA
 JV6565
 JV6565                          STATION DESCRIPTION
 JV6565
 JV6565'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1988
 JV6565'THE MARK IS LOCATED ABOUT 2 KM (1.25 MI) SOUTHWEST OF THE CENTER OF
 JV6565'ROCKVILLE AND 0.3 KM (0.20 MI) NORTHEAST OF A POINT WHERE FALLS ROAD
 JV6565'CROSSES OVER INTERSTATE HIGHWAY 270.  OWNERSHIP--MONTGOMERY COUNTY
 JV6565'DEPARTMENT OF EDUCATION.
 JV6565'TO REACH FROM THE OVERPASS BRIDGE WHERE FALLS ROAD CROSSES INTERSTATE
 JV6565'HIGHWAY 270, GO EASTERLY ON FALLS ROAD FOR 0.25 KM (0.15 MI) TO A
 JV6565'SCHOOL ON THE LEFT.  TURN LEFT AND GO NORTH ON THE CIRCULAR DRIVE
 JV6565'LEADING TO THE SCHOOLS MAIN ENTRANCE FOR 0.05 KM (0.00 MI) TO THE
 JV6565'STATION ON THE LEFT.
 JV6565'THE MARK IS A 0.009 M (0.02 FT) SPIKE DRIVEN INTO A SEAM IN THE
 JV6565'CONCRETE FOR A WALK LEADING TO THE SCHOOL AND IT IS FLUSH WITH THE
 JV6565'SURFACE OF THE WALK.  IT IS JUST SOUTHWEST OF THE MAIN ENTRANCE TO THE
 JV6565'SCHOOL AND ABOUT MIDWAY BETWEEN THE ENTRANCE AND THE STREET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6098 ***********************************************************************
 JV6098  CBN         -  This is a Cooperative Base Network Control Station.
 JV6098  DESIGNATION -  ALMONY
 JV6098  PID         -  JV6098
 JV6098  STATE/COUNTY-  MD/BALTIMORE
 JV6098  COUNTRY     -  US
 JV6098  USGS QUAD   -  NORRISVILLE (2016)
 JV6098
 JV6098                         *CURRENT SURVEY CONTROL
 JV6098  ______________________________________________________________________
 JV6098* NAD 83(2011) POSITION- 39 40 25.09926(N) 076 36 17.89753(W)   ADJUSTED
 JV6098* NAD 83(2011) ELLIP HT-   196.514 (meters)        (06/27/12)   ADJUSTED
 JV6098* NAD 83(2011) EPOCH   -  2010.00
 JV6098* NAVD 88 ORTHO HEIGHT -   228.874 (meters)      750.90  (feet) ADJUSTED
 JV6098  ______________________________________________________________________
 JV6098  GEOID HEIGHT    -        -32.359 (meters)                     GEOID18
 JV6098  NAD 83(2011) X  -  1,138,874.416 (meters)                     COMP
 JV6098  NAD 83(2011) Y  - -4,782,335.069 (meters)                     COMP
 JV6098  NAD 83(2011) Z  -  4,050,286.161 (meters)                     COMP
 JV6098  LAPLACE CORR    -         -1.98  (seconds)                    DEFLEC18
 JV6098  DYNAMIC HEIGHT  -        228.759 (meters)      750.52  (feet) COMP
 JV6098  MODELED GRAVITY -    980,119.7   (mgal)                       NAVD 88
 JV6098
 JV6098  VERT ORDER      -  SECOND    CLASS II
 JV6098
 JV6098  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6098  Standards:
 JV6098         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6098            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6098  -------------------------------------------------------------------
 JV6098  NETWORK    0.36   0.67           0.16   0.13   0.34     -0.00974380
 JV6098  -------------------------------------------------------------------
 JV6098  Click here for local accuracies and other accuracy information.
 JV6098
 JV6098.The horizontal coordinates were established by GPS observations
 JV6098.and adjusted by the National Geodetic Survey in June 2012.
 JV6098
 JV6098.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6098.been affixed to the stable North American tectonic plate. See 
 JV6098.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6098
 JV6098.The horizontal coordinates are valid at the epoch date displayed above
 JV6098.which is a decimal equivalence of Year/Month/Day.
 JV6098
 JV6098.The orthometric height was determined by differential leveling and
 JV6098.adjusted by the NATIONAL GEODETIC SURVEY
 JV6098.in June 1991.
 JV6098
 JV6098.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6098.GEOID18 height accuracy estimate available here.
 JV6098
 JV6098.Click photographs - Photos may exist for this station.
 JV6098
 JV6098.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6098
 JV6098.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6098
 JV6098.The ellipsoidal height was determined by GPS observations
 JV6098.and is referenced to NAD 83.
 JV6098
 JV6098.The dynamic height is computed by dividing the NAVD 88
 JV6098.geopotential number by the normal gravity value computed on the
 JV6098.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6098.degrees latitude (g = 980.6199 gals.).
 JV6098
 JV6098.The modeled gravity was interpolated from observed gravity values.
 JV6098
 JV6098. The following values were computed from the NAD 83(2011) position.
 JV6098
 JV6098;                    North         East     Units Scale Factor Converg.
 JV6098;SPC MD       -   222,867.300   433,894.528   MT  1.00004678   +0 14 52.6
 JV6098;SPC MD       -   731,190.47  1,423,535.63   sFT  1.00004678   +0 14 52.6
 JV6098;SPC PA S     -    38,423.000   698,244.533   MT  1.00005075   +0 44 34.4
 JV6098;SPC PA S     -   126,059.46  2,290,823.94   sFT  1.00005075   +0 44 34.4
 JV6098;UTM  18      - 4,392,766.349   362,346.757   MT  0.99983329   -1 01 29.3
 JV6098
 JV6098!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6098!SPC MD       -   0.99996917  x   1.00004678  =   1.00001595
 JV6098!SPC PA S     -   0.99996917  x   1.00005075  =   1.00001992
 JV6098!UTM  18      -   0.99996917  x   0.99983329  =   0.99980247
 JV6098
 JV6098:                Primary Azimuth Mark                     Grid Az
 JV6098:SPC MD       -  ALMONY RM 2                              087 06 06.6
 JV6098:SPC PA S     -  ALMONY RM 2                              086 36 24.8
 JV6098:UTM  18      -  ALMONY RM 2                              088 22 28.5
 JV6098
 JV6098_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6234692766(NAD 83)
 JV6098
 JV6098|---------------------------------------------------------------------|
 JV6098| PID    Reference Object                     Distance      Geod. Az  |
 JV6098|                                                           dddmmss.s |
 JV6098| JV6074 STEWARTSTOWN WATER TANK             APPROX. 9.3 KM 0064534.6 |
 JV6098| JV6504 ALMONY RM 4                          21.502 METERS 05118     |
 JV6098| CA9874 ALMONY RM 1                          50.856 METERS 05551     |
 JV6098| JV6503 ALMONY RM 2                                        0872059.2 |
 JV6098| JV6099 ALMONY RM 5                          25.302 METERS 08721     |
 JV6098| JV6104 CHURCH SPIRE                        APPROX. 7.9 KM 1674526.5 |
 JV6098| CA9875 ALMONY RM 3                          24.064 METERS 18849     |
 JV6098| JV6493 ALMONY RM 6                          20.561 METERS 21124     |
 JV6098| JV6078 SHREWSBURY WATER TANK               APPROX.11.2 KM 3263235.7 |
 JV6098| JV6081 SHREWSBURY CHURCH SPIRE             APPROX.12.2 KM 3282529.8 |
 JV6098|---------------------------------------------------------------------|
 JV6098
 JV6098                          SUPERSEDED SURVEY CONTROL
 JV6098
 JV6098  NAD 83(2007)-  39 40 25.09944(N)    076 36 17.89821(W) AD(2002.00) 0
 JV6098  ELLIP H (02/10/07)  196.532  (m)                       GP(2002.00)    
 JV6098  ELLIP H (02/12/02)  196.538  (m)                       GP(       ) 4 1
 JV6098  ELLIP H (03/31/00)  196.461  (m)                       GP(       ) 3 1
 JV6098  NAD 83(1991)-  39 40 25.09987(N)    076 36 17.89787(W) AD(       ) B
 JV6098  ELLIP H (10/23/91)  196.443  (m)                       GP(       ) 4 1
 JV6098  NAD 83(1986)-  39 40 25.09163(N)    076 36 17.90084(W) AD(       ) 1
 JV6098  NAD 27      -  39 40 24.71700(N)    076 36 19.01200(W) AD(       ) 1
 JV6098  NAVD 88             228.87   (m)          750.9    (f) LEVELING    3  
 JV6098  NAVD 88 (04/08/97)  228.9    (m)  GEOID93  model used  GPS OBS        
 JV6098  NGVD 29             229.12   (m)          751.7    (f) LEVELING    3  
 JV6098  NGVD 29             229.11   (m)          751.7    (f) LEVELING    3  
 JV6098
 JV6098.Superseded values are not recommended for survey control.
 JV6098
 JV6098.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6098.See file dsdata.pdf to determine how the superseded data were derived.
 JV6098
 JV6098_MARKER: DS = TRIANGULATION STATION DISK
 JV6098_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6098_STAMPING: ALMONY 1933
 JV6098_MARK LOGO: CGS
 JV6098_PROJECTION: RECESSED 30 CENTIMETERS
 JV6098_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6098_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6098+STABILITY: SURFACE MOTION
 JV6098_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6098+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2024
 JV6098
 JV6098  HISTORY     - Date     Condition        Report By
 JV6098  HISTORY     - 1933     MONUMENTED       CGS
 JV6098  HISTORY     - 1933     GOOD             CGS
 JV6098  HISTORY     - 1934     GOOD             CGS
 JV6098  HISTORY     - 1934     GOOD             CGS
 JV6098  HISTORY     - 1947     GOOD             CGS
 JV6098  HISTORY     - 1959     GOOD             CGS
 JV6098  HISTORY     - 1961     GOOD             CGS
 JV6098  HISTORY     - 1962     GOOD             MDBCSM
 JV6098  HISTORY     - 19901018 GOOD             NGS
 JV6098  HISTORY     - 19901125 GOOD             NGS
 JV6098  HISTORY     - 19910122 GOOD
 JV6098  HISTORY     - 19950221 GOOD             MCCRON
 JV6098  HISTORY     - 19970201 GOOD             MD-005
 JV6098  HISTORY     - 19971024 GOOD             DMW
 JV6098  HISTORY     - 19990402 GOOD             GEOMET
 JV6098  HISTORY     - 20000327 GOOD             MDSHA
 JV6098  HISTORY     - 20001120 GOOD             NGS
 JV6098  HISTORY     - 20110311 GOOD             INDIV
 JV6098  HISTORY     - 20170122 GOOD             BASE9
 JV6098  HISTORY     - 20170214 GOOD             GPSSS
 JV6098  HISTORY     - 20240829 GOOD             MDSHA
 JV6098
 JV6098                          STATION DESCRIPTION
 JV6098
 JV6098'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV6098'THE STATION IS ABOUT 5-1/2 MILES NNE OF HEREFORD AND 3-1/2 MILES
 JV6098'S OF THE PENNSYLVANIA STATE LINE, ABOUT 1 MILE W OF THE
 JV6098'CROSSROADS AT THE VILLAGE OF SHANE, 0.25 MILE W OF THE OLD YORK
 JV6098'ROAD, ON PROPERTY OWNED BY MR. CLARENCE ALMONY.  IT IS 8 YARDS N
 JV6098'OF THE CENTER LINE OF THE ROAD IN THE CULTIVATED FIELD, 24 FEET
 JV6098'NE OF A 30-INCH GUM TREE BEARING A TRIANGULAR BLAZE ON ITS S
 JV6098'SIDE, AND 52.7 FEET W OF A PECAN TREE.  THE MARK IS 1 FOOT
 JV6098'UNDERGROUND.
 JV6098'
 JV6098'THE SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE
 JV6098'STANDARD BRONZE DISKS SET IN CONCRETE.
 JV6098'
 JV6098'REFERENCE MARK NO.1 IS 4-1/2 YARDS S OF THE CENTER LINE OF THE
 JV6098'ROAD, 2 YARDS W-SW OF A LARGE TREE, AND 25 YARDS W ALONG
 JV6098'THE ROAD FROM THE T-ROAD N.  REFERENCE MARK NO.2 IS A STANDARD
 JV6098'DISK SET IN THE TOP OF THE W HEAD WALL OF THE CULVERT, ABOUT
 JV6098'0.15 MILE S ALONG THE OLD YORK ROAD FROM THE DIRT ROAD LEADING
 JV6098'TO THE STATION.  REFERENCE MARK NO.3 IS 15 YARDS W ALONG THE
 JV6098'ROAD FROM THE BLAZED TREE, 5 YARDS S OF THE CENTER LINE OF THE
 JV6098'ROAD, AND 1 YARD N-NE OF A LARGE FENCE-CORNER POST.  THE AZIMUTH
 JV6098'MARK IS VISIBLE FROM THE GROUND AT THE STATION.
 JV6098'
 JV6098'IT IS REACHED FROM SHANE BY GOING N ON THE OLD YORK ROAD 0.7 MILE
 JV6098'AND TURN LEFT ON DIRT ROAD.  PROCEED 0.25 MILE, OR ABOUT 80 YARDS
 JV6098'BEYOND A T-ROAD N WITH A TELEPHONE LINE ON ITS E SIDE, TO
 JV6098'THE STATION.
 JV6098'
 JV6098'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6098
 JV6098                          STATION RECOVERY (1933)
 JV6098
 JV6098'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933
 JV6098'RECOVERED IN GOOD CONDITION.
 JV6098
 JV6098                          STATION RECOVERY (1934)
 JV6098
 JV6098'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 JV6098'STATION, REFERENCE AND AZIMUTH MARKS WERE FOUND IN GOOD CONDITION.
 JV6098'
 JV6098'IT IS 8 PACES NW OF THE CENTER LINE OF A ROCK-SURFACED ROAD, ON
 JV6098'THE PROPERTY OF MR. CLARENCE ALMONY, IN A CULTIVATED FIELD, 6
 JV6098'PACES NNE OF A 24-INCH GUM TREE BEARING A TRIANGULAR BLAZE AND
 JV6098'17 PACES SW OF A 10-INCH WALNUT TREE.  THE MARK IS ABOUT 12 INCHES
 JV6098'BELOW THE SURFACE OF THE GROUND.
 JV6098'
 JV6098'TO REACH THE STATION FROM SHANE, GO N ON THE OLD YORK ROAD
 JV6098'FOR 0.7 MILES TO A T-ROAD SW (ENSOR ROAD), TURN LEFT ON ENSOR
 JV6098'ROAD FOR ABOUT 0.25 MILE TO THE STATION.  STATION IS ABOUT 80
 JV6098'YARDS NW OF A T-ROAD NW.
 JV6098
 JV6098                          STATION RECOVERY (1934)
 JV6098
 JV6098'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JSB)
 JV6098'STATION AND MARKS FOUND IN GOOD CONDITION.  NO CHANGES SINCE
 JV6098'STATION WAS ESTABLISHED.  ORIGINAL DESCRIPTION IS GOOD.
 JV6098'
 JV6098'STATION IS ABOUT 5-1/2 MILES AIR LINE NNE OF HEREFORD, 3-1/2
 JV6098'MILES NE OF PARKTON, 2-1/4 MILES N OF STABLERSVILLE, 1.0 MILE
 JV6098'W FROM THE VILLAGE OF SHANE, 1.0 MILES S FROM THE VILLAGE
 JV6098'OF TRUMP, 1/4 MILE SW OF THE OLD YORK TURNPIKE ROAD, NOW
 JV6098'CONCRETE.  MACADAM OR CONCRETE ROADS LEAD TO THE STATION
 JV6098'BY THE WAY OF THE VILLAGES NAMED ABOVE.
 JV6098
 JV6098                          STATION RECOVERY (1947)
 JV6098
 JV6098'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947 (CRR)
 JV6098'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE
 JV6098'FOUND TO BE IN GOOD CONDITION.  MEASUREMENTS WERE FOUND TO BE
 JV6098'CORRECT.  A COMPLETE NEW DESCRIPTION FOLLOWS--
 JV6098'
 JV6098'THE STATION IS LOCATED ABOUT 4 MILES WEST OF SHAWSVILLE AND
 JV6098'1/2 MILE SOUTHWEST OF STATE HIGHWAY 439.  IT IS 27 FEET NORTHWEST
 JV6098'OF THE CENTERLINE OF ENSOR RD., 20 FEET NORTH OF A 36 INCH TREE,
 JV6098'AND 10 FEET NORTH OF A POWERLINE POLE.  THE MARK IS 1 FOOT BELOW
 JV6098'THE SURFACE OF THE GROUND AND THE DISK IS STAMPED ALMONY 1933.
 JV6098'
 JV6098'REFERENCE MARK NO. 1 IS 166.85 FEET EAST OF THE STATION, 12
 JV6098'FEET SOUTHEAST OF THE CENTERLINE OF ENSOR RD., 7 FEET SOUTHWEST
 JV6098'OF A 36 INCH TREE IN THE FENCE LINE.  THE MARK PROJECTS ABOUT 6
 JV6098'INCHES AND THE DISK IS STAMPED ALMONY NO 1 1933.
 JV6098'
 JV6098'REFERENCE MARK NO. 2 (AZIMUTH MARK) IS ABOUT 0.3 MILE EAST
 JV6098'OF THE STATION, 15 FEET SOUTHWEST OF THE CENTERLINE OF STATE
 JV6098'HIGHWAY 439 AND 1 FOOT NORTHWEST OF THE SOUTHEAST END OF A
 JV6098'CONCRETE CULVERT.  THE DISK IS IN A DRILL HOLE IN THE CULVERT
 JV6098'AND IS STAMPED ALMONY NO 2 1933.
 JV6098'
 JV6098'REFERENCE MARK NO. 3 IS 78.95 FEET SOUTH OF THE STATION, 12
 JV6098'FEET SOUTHEAST OF THE CENTERLINE OF ENSOR RD. AND 1 FOOT NORTHEAST
 JV6098'OF A FENCE CORNER, IN A FENCE LINE.  THE MARK PROJECTS ABOUT 6
 JV6098'INCHES AND THE DISK IS STAMPED ALMONY NO 3 1933.
 JV6098'
 JV6098'TO REACH THE STATION FROM SHAWSVILLE AT THE JUNCTION OF STATE
 JV6098'HIGHWAYS 23 AND 439, GO NORTHWEST ON 439 FOR 3.4 MILES TO A
 JV6098'CONCRETE CULVERT ON THE LEFT AND R.M. 2 AS DESCRIBED.  CONTINUE
 JV6098'STRAIGHT AHEAD FOR 0.2 MILE, TURN LEFT ON ENSOR RD. AND GO 0.25
 JV6098'MILE TO STATION.
 JV6098'
 JV6098'THE STATION COULD NOT BE OCCUPIED DUE TO A POWERLINE BEING
 JV6098'ERECTED ALMOST DIRECTLY ABOVE THE STATION.  IT WAS OCCUPIED
 JV6098'ECCENTRICALLY BUT NO NEW MARK WAS SET.  THE MARKS WERE TAKEN
 JV6098'FROM A TRIPOD SET UP OVER THE STATION.
 JV6098
 JV6098                          STATION RECOVERY (1959)
 JV6098
 JV6098'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV6098'STATION AND REFERENCE MARK NO. 2 (AZIMUTH MARK) WERE RECOVERED AS
 JV6098'DESCRIBED AND FOUND IN GOOD CONDITION.  REFERENCE MARKS NO. 1 AND
 JV6098'3 WERE FOUND DESTROYED.  REFERENCE MARKS NO. 4, 5 AND 6 WERE
 JV6098'ESTABLISHED.  STATION WAS NOT OCCUPIED DUE TO OVERHEAD
 JV6098'POWERLINE.  THEREFORE REFERENCE MARK NO. 5 WAS OCCUPIED.
 JV6098'
 JV6098'A COMPLETE NEW DESCRIPTION FOLLOWS--
 JV6098'
 JV6098'STATION IS LOCATED ABOUT 5-1/2 MILES NORTH-NORTHEAST OF
 JV6098'HEREFORD, ABOUT 3-1/2 MILES SOUTH OF THE MARYLAND-PENNSYLVANIA
 JV6098'STATE LINE AND 1 MILE WEST OF THE CROSSROADS AT THE VILLAGE OF
 JV6098'SHANE.  STATION, A STANDARD DISK SET IN A 12 INCH CONCRETE
 JV6098'CYLINDER AND STAMPED ALMONY 1933 IS 27 FEET NORTHWEST OF
 JV6098'APPROXIMATE CENTERLINE OF ROAD, 11 FEET NORTH OF UTILITY POLE
 JV6098'NO. 268302, 23 FEET NORTHEAST OF A 40 INCH GUM TREE AND 52-1/2
 JV6098'FEET SOUTHWEST OF A WALNUT TREE.  THE MARK IS ABOUT 12 INCHES
 JV6098'BELOW THE SURFACE OF GROUND.
 JV6098'
 JV6098'TO REACH FROM THE VILLAGE OF SHANE, GO NORTHWESTERLY ON STATE
 JV6098'HIGHWAY NO. 439 (OLD YORK ROAD) FOR 0.55 MILE TO AZIMUTH MARK IN
 JV6098'HEADWALL OF CULVERT ON LEFT (SOUTHWEST) SIDE OF HIGHWAY.  CONTINUE
 JV6098'NORTHWESTERLY ON STATE HIGHWAY NO. 439 FOR 0.15 MILE TO SIDE
 JV6098'ROAD LEFT.  TURN LEFT AND GO SOUTHWESTERLY ON SURFACED ROAD FOR
 JV6098'0.25 MILE TO FARM LANE RIGHT.  CONTINUE SOUTHWESTERLY ON
 JV6098'SURFACED ROAD FOR 0.1 MILE TO 40 INCH GUM TREE AND STATION ON
 JV6098'RIGHT AS DESCRIBED.
 JV6098'
 JV6098'REFERENCE MARK NO. 2 (AZIMUTH MARK), A STANDARD DISK SET IN A
 JV6098'DRILLHOLE IN THE TOP OF A CONCRETE HEADWALL AND STAMPED ALMONY
 JV6098'1933 NO. 2 IS 15 FEET WEST OF THE APPROXIMATE CENTERLINE OF
 JV6098'OLD YORK ROAD, 59 FEET NORTH OF UTILITY POLE, 66 FEET NORTH
 JV6098'OF POWERLINE POLE NO. 104821 AND NEAR THE SOUTHEAST END OF
 JV6098'CULVERT.  THE MARK IS SET FLUSH WITH THE TOP OF HEADWALL.
 JV6098'
 JV6098'REFERENCE MARK NO. 4, A STANDARD DISK SET IN A 12X12 INCH
 JV6098'CONCRETE MONUMENT AND STAMPED ALMONY NO 4 1944 IS 18-1/2 FEET
 JV6098'NORTHEAST OF A WALNUT TREE, 16-1/2 FEET NORTHWEST OF
 JV6098'APPROXIMATE CENTERLINE OF ROAD AND 2-1/2 FEET WEST OF WITNESS
 JV6098'POST.  THE MARK PROJECTS 6 INCHES.
 JV6098'
 JV6098'REFERENCE MARK NO. 5, A STANDARD DISK SET IN A 12X12 INCH CONCRETE
 JV6098'MONUMENT AND STAMPED ALMONY NO 5 1933 IS 32-1/2 FEET SOUTHEAST OF
 JV6098'OF APPROXIMATE CENTERLINE OF ROAD, 27 FEET EAST OF UTILITY POLE
 JV6098'AND 48 FEET SOUTHEAST OF A WALNUT TREE.  THE MARK IS ABOUT 8
 JV6098'INCHES BELOW THE SURFACE OF THE GROUND.
 JV6098'
 JV6098'REFERENCE MARK NO. 6, A STANDARD DISK SET IN A 12X12 INCH
 JV6098'CONCRETE MONUMENT AND STAMPED ALMONY NO 6 1933 IS 46-1/2
 JV6098'FEET SOUTHWEST OF A 40 INCH GUM TREE, 17-1/2 FEET NORTHWEST OF
 JV6098'THE APPROXIMATE CENTERLINE OF ROAD AND 1.5 FEET EAST OF A
 JV6098'WITNESS MARKER.  THE MARK PROJECTS 6 INCHES.
 JV6098'
 JV6098'A TRAVERSE CONNECTION WAS MADE TO REFERENCE MARK NO. 5 AND THE
 JV6098'DISTANCE IS SHOWN BELOW.
 JV6098
 JV6098                          STATION RECOVERY (1961)
 JV6098
 JV6098'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (JCC)
 JV6098'THE STATION MARK, REFERENCE MARKS 2,4,5 AND 6 WERE RECOVERED IN
 JV6098'GOOD CONDITION.  OBSERVED DIRECTIONS WAS TAKEN ECCENTRIC FROM
 JV6098'REFERENCE MARK NUMBER 5.  AN OBSERVATION TOWER COULD NOT BE
 JV6098'ERECTED OVER THE STATION MARK DUE TO A POWERLINE CONSTRUCTED
 JV6098'OVER THE STATION MARK.
 JV6098'
 JV6098'THE DESCRIPTION WAS ADEQUATE.
 JV6098
 JV6098                          STATION RECOVERY (1962)
 JV6098
 JV6098'RECOVERY NOTE BY MD BUR SURV AND MAPS 1962
 JV6098'STATION FOUND 18 INCHES BELOW GROUND AND IN GOOD CONDITION.  THE
 JV6098'AZIMUTH MARK IS IN FAIR CONDITION.
 JV6098
 JV6098                          STATION RECOVERY (1990)
 JV6098
 JV6098'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6098'6.0 KM (3.7 MI) NORTHWESTERLY ALONG STATE HIGHWAY 439 FROM THE
 JV6098'JUNCTION OF STATE HIGHWAY 23 IN SHAWSVILLE, THENCE 0.4 KM (0.2 MI)
 JV6098'SOUTHWESTERLY ALONG ENSOR ROAD, 71.2 M (233.6 FT) SOUTHWEST OF THE
 JV6098'CENTER OF A DRIVEWAY, 8.7 M (28.5 FT) NORTHWEST OF THE ROAD
 JV6098'CENTERLINE, 3.3 M (10.8 FT) NORTH OF A UTILITY POLE, 2.6 M (8.5 FT)
 JV6098'NORTHWEST OF A WITNESS POST, 1.0 M (3.3 FT) ABOVE THE LEVEL OF THE
 JV6098'ROAD, AND THE MONUMENT IS RECESSED 0.3 M (1.0 FT) BELOW THE GROUND
 JV6098'SURFACE.
 JV6098
 JV6098                          STATION RECOVERY (1990)
 JV6098
 JV6098'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6098'STATION MARK AND REFERENCE MARK 6 WERE RECOVERED IN GOOD CONDITION.
 JV6098'OTHER MARKS NOT SEARCHED FOR.
 JV6098'STATION MARK IS LOCATED ABOUT 5.2 KM (3.2 MI) SOUTH OF THE
 JV6098'MARYLAND-PENNSYLVANIA STATE LINE, 3.2 KM (2.0 MI) WEST OF THE
 JV6098'BALTIMORE-HARFORD COUNTY LINE, 5.5 KM (3.4 MI) SOUTHEAST OF THE
 JV6098'JUNCTION OF INTERSTATE HIGHWAY 83 AND STATE HIGHWAY 439 (JUST SOUTH
 JV6098'OF THE STATE LINE), AND IN A CULTIVATED FIELD.  OWNERSHIP--UNKNOWN.
 JV6098'TO REACH FROM THE JUNCTION OF HIGHWAYS 83 AND 439 (EXIT 36), GO
 JV6098'SOUTHEAST ON HIGHWAY 439 FOR 4.49 KM (2.79 MI) TO A PAVED ROAD LEFT
 JV6098'AT STORE ON THE LEFT (WEST LIBERTY ROAD).  CONTINUE AHEAD, SOUTH, FOR
 JV6098'0.71 KM (0.44 MI) TO A PAVED ROAD RIGHT.  TURN RIGHT, SOUTHWEST, ON
 JV6098'ENSOR ROAD FOR 0.38 KM (0.24 MI) TO TOP OF GRADE AND THE STATION ON
 JV6098'THE RIGHT.
 JV6098'STATION MARK IS SET IN THE TOP OF A 30-CM ROUND CONCRETE POST 30 CM
 JV6098'BELOW GROUND.  IT IS 8.7 M (28.5 FT) NORTHWEST OF, AND 0.5 M
 JV6098'(1.6 FT) HIGHER THAN THE ROAD CENTER, 3.4 M (11.2 FT) NORTH OF A
 JV6098'UTILITY POLE, 2.6 M (8.5 FT) NORTHWEST OF A FIBERGLASS WITNESS POST,
 JV6098'20.6 M (67.6 FT) NORTHEAST OF REFERENCE MARK 6, AND 71.2 M
 JV6098'(233.6 FT) SOUTHWEST OF A DIRT ROAD CENTER.
 JV6098'DESCRIBED BY G.R.HEID.
 JV6098
 JV6098                          STATION RECOVERY (1991)
 JV6098
 JV6098'RECOVERED 1991
 JV6098'RECOVERED IN GOOD CONDITION.
 JV6098
 JV6098                          STATION RECOVERY (1995)
 JV6098
 JV6098'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6098'RECOVERED AS DESCRIBED.
 JV6098
 JV6098                          STATION RECOVERY (1997)
 JV6098
 JV6098'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV6098'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .
 JV6098'RECOVERED AS DESCRIBED.
 JV6098
 JV6098                          STATION RECOVERY (1997)
 JV6098
 JV6098'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6098'STATION MARK AND REFERENCE MARK 6 WERE RECOVERED IN GOOD CONDITION.
 JV6098'THE OTHER MARKS WERE NOT SEARCHED FOR.
 JV6098
 JV6098                          STATION RECOVERY (1999)
 JV6098
 JV6098'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BB)
 JV6098'RECOVERED AS DESCRIBED.
 JV6098
 JV6098                          STATION RECOVERY (2000)
 JV6098
 JV6098'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6098'RECOVERED AS DESCRIBED.
 JV6098
 JV6098                          STATION RECOVERY (2000)
 JV6098
 JV6098'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (CSC)
 JV6098'1990 TO-REACH IS IN ERROR.  TO REACH FROM THE JUNCTION OF HIGHWAYS 83
 JV6098'AND 439 (EXIT 36), GO SOUTHEAST ON HWY 439 FOR 5 KM (3.1) MI.  TURN
 JV6098'RIGHT, SOUTHWEST, ON ENSOR RD FOR 0.38 KM (0.24 MI) TO TOP OF GRADE
 JV6098'AND STATION ON THE RIGHT.
 JV6098
 JV6098                          STATION RECOVERY (2011)
 JV6098
 JV6098'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 JV6098'RECOVERED AS DESCRIBED DESCRIPTION IS ADEQUATE AND USED FOR GPS -
 JV6098'JFSIII
 JV6098
 JV6098                          STATION RECOVERY (2017)
 JV6098
 JV6098'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 JV6098'WITNESS POST MENTIONED IN 1990 RECOVERY IS GONE.  MARK IS 10.17 FT
 JV6098'(3.1 M) NORTH UTILITY POLE IS DESIGNATED AS BGE NUMBER 268302.
 JV6098
 JV6098                          STATION RECOVERY (2017)
 JV6098
 JV6098'RECOVERY NOTE BY GPS SALES AND SERVICES 2017 (SS)
 JV6098'RECOVERED BY STEVE SNYDER OF A.L. SNYDER SURVEYOR, INC.
 JV6098
 JV6098                          STATION RECOVERY (2024)
 JV6098
 JV6098'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 JV6098'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6099 ***********************************************************************
 JV6099  DESIGNATION -  ALMONY RM 5
 JV6099  PID         -  JV6099
 JV6099  STATE/COUNTY-  MD/BALTIMORE
 JV6099  COUNTRY     -  US
 JV6099  USGS QUAD   -  NORRISVILLE (2016)
 JV6099
 JV6099                         *CURRENT SURVEY CONTROL
 JV6099  ______________________________________________________________________
 JV6099* NAD 83(2011) POSITION- 39 40 25.13715(N) 076 36 16.83704(W)   ADJUSTED
 JV6099* NAD 83(2011) ELLIP HT-   195.791 (meters)        (08/29/25)   ADJUSTED
 JV6099* NAD 83(2011) EPOCH   -  2010.00
 JV6099* NAVD 88 ORTHO HEIGHT -   228.135 (meters)      748.47  (feet) ADJUSTED
 JV6099  ______________________________________________________________________
 JV6099  GEOID HEIGHT    -        -32.360 (meters)                     GEOID18
 JV6099  NAD 83(2011) X  -  1,138,898.702 (meters)                     COMP
 JV6099  NAD 83(2011) Y  - -4,782,327.946 (meters)                     COMP
 JV6099  NAD 83(2011) Z  -  4,050,286.598 (meters)                     COMP
 JV6099  LAPLACE CORR    -         -1.98  (seconds)                    DEFLEC18
 JV6099  DYNAMIC HEIGHT  -        228.021 (meters)      748.10  (feet) COMP
 JV6099  MODELED GRAVITY -    980,119.7   (mgal)                       NAVD 88
 JV6099
 JV6099  VERT ORDER      -  SECOND    CLASS II
 JV6099
 JV6099  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6099  Standards:
 JV6099         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6099            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6099  -------------------------------------------------------------------
 JV6099  NETWORK    0.72   1.37           0.32   0.26   0.70     -0.03230686
 JV6099  -------------------------------------------------------------------
 JV6099  Click here for local accuracies and other accuracy information.
 JV6099
 JV6099.The horizontal coordinates were established by GPS observations
 JV6099.and adjusted by the MD DOT HIGHWAY ADMIN in August 2025.
 JV6099
 JV6099.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 JV6099.frame has been affixed to the stable North American tectonic plate 
 JV6099
 JV6099.The horizontal coordinates are valid at the epoch date displayed above
 JV6099.which is a decimal equivalence of Year/Month/Day.
 JV6099
 JV6099.The orthometric height was determined by differential leveling and
 JV6099.adjusted by the NATIONAL GEODETIC SURVEY
 JV6099.in June 1991.
 JV6099
 JV6099.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6099.GEOID18 height accuracy estimate available here.
 JV6099
 JV6099.Click photographs - Photos may exist for this station.
 JV6099
 JV6099.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6099
 JV6099.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6099
 JV6099.The ellipsoidal height was determined by GPS observations
 JV6099.and is referenced to NAD 83.
 JV6099
 JV6099.The dynamic height is computed by dividing the NAVD 88
 JV6099.geopotential number by the normal gravity value computed on the
 JV6099.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6099.degrees latitude (g = 980.6199 gals.).
 JV6099
 JV6099.The modeled gravity was interpolated from observed gravity values.
 JV6099
 JV6099. The following values were computed from the NAD 83(2011) position.
 JV6099
 JV6099;                    North         East     Units Scale Factor Converg.
 JV6099;SPC MD       -   222,868.578   433,919.798   MT  1.00004678   +0 14 53.2
 JV6099;SPC MD       -   731,194.66  1,423,618.54   sFT  1.00004678   +0 14 53.2
 JV6099;SPC PA S     -    38,424.497   698,269.792   MT  1.00005075   +0 44 35.1
 JV6099;SPC PA S     -   126,064.37  2,290,906.81   sFT  1.00005075   +0 44 35.1
 JV6099;UTM  18      - 4,392,767.066   362,372.044   MT  0.99983320   -1 01 28.6
 JV6099
 JV6099!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6099!SPC MD       -   0.99996928  x   1.00004678  =   1.00001606
 JV6099!SPC PA S     -   0.99996928  x   1.00005075  =   1.00002003
 JV6099!UTM  18      -   0.99996928  x   0.99983320  =   0.99980249
 JV6099
 JV6099:                Primary Azimuth Mark                     Grid Az
 JV6099:SPC MD       -  ALMONY RM 2                              087 06 45.5
 JV6099:SPC PA S     -  ALMONY RM 2                              086 37 03.6
 JV6099:UTM  18      -  ALMONY RM 2                              088 23 07.3
 JV6099
 JV6099_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6237292767(NAD 83)
 JV6099
 JV6099|---------------------------------------------------------------------|
 JV6099| PID    Reference Object                     Distance      Geod. Az  |
 JV6099|                                                           dddmmss.s |
 JV6099| JV6503 ALMONY RM 2                                        0872138.7 |
 JV6099| JV6493 ALMONY RM 6                          40.552 METERS 24232     |
 JV6099| JV6098 ALMONY                               25.294 METERS 26722     |
 JV6099| JV6504 ALMONY RM 4                          14.926 METERS 32523     |
 JV6099| JV6078 SHREWSBURY WATER TANK               APPROX.11.2 KM 3262555.7 |
 JV6099| JV6081 SHREWSBURY CHURCH SPIRE             APPROX.12.2 KM 3281915.6 |
 JV6099|---------------------------------------------------------------------|
 JV6099
 JV6099                          SUPERSEDED SURVEY CONTROL
 JV6099
 JV6099  NAD 83(1991)-  39 40 25.13759(N)    076 36 16.83766(W) AD(       ) 2
 JV6099  NAD 83(1986)-  39 40 25.12936(N)    076 36 16.84065(W) AD(       ) 2
 JV6099  NAD 27      -  39 40 24.75480(N)    076 36 17.95220(W) AD(       ) 2
 JV6099  NGVD 29 (07/19/86)  228.7    (m)          750.     (f) VERT ANG       
 JV6099
 JV6099.Superseded values are not recommended for survey control.
 JV6099
 JV6099.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6099.See file dsdata.pdf to determine how the superseded data were derived.
 JV6099
 JV6099_MARKER: DR = REFERENCE MARK DISK
 JV6099_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6099_STAMPING: ALMONY NO 5 1933
 JV6099_MARK LOGO: CGS
 JV6099_PROJECTION: RECESSED 10 CENTIMETERS
 JV6099_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6099+STABILITY: SURFACE MOTION
 JV6099_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6099+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2024
 JV6099
 JV6099  HISTORY     - Date     Condition        Report By
 JV6099  HISTORY     - 1959     MONUMENTED       CGS
 JV6099  HISTORY     - 1959     GOOD             CGS
 JV6099  HISTORY     - 19901018 GOOD             NGS
 JV6099  HISTORY     - 20240829 GOOD             MDSHA
 JV6099
 JV6099                          STATION DESCRIPTION
 JV6099
 JV6099'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV6099'STATION IS LOCATED ABOUT 6-1/2 MILES NORTHEAST OF HEREFORD, ABOUT
 JV6099'3/4 MILE WEST OF THE VILLAGE OF SHANE AND ABOUT 3-1/2 MILES
 JV6099'SOUTH OF MARYLAND-PENNSYLVANIA STATE LINE.  STATION, A STANDARD
 JV6099'REFERENCE DISK IS SET IN A MASS OF CONCRETE AND STAMPED ALMONY
 JV6099'RM 5 1933.  STATION IS 32-1/2 FEET SOUTHEAST OF APPROXIMATE
 JV6099'CENTERLINE OF ROAD, 27 FEET EAST OF TELEPHONE POLE AND 48 FEET
 JV6099'SOUTHEAST OF WALNUT TREE.  THE MARK IS ABOUT 8 INCHES BELOW THE
 JV6099'SURFACE OF GROUND.
 JV6099'
 JV6099'TO REACH FROM THE VILLAGE OF SHANE, GO NORTHWESTERLY ON STATE
 JV6099'HIGHWAY NO. 439 (OLD YORK ROAD) FOR 0.55 MILE TO AZIMUTH MARK ON
 JV6099'LEFT (SOUTH) SIDE OF ROAD AS DESCRIBED.  CONTINUE NORTHWESTERLY ON
 JV6099'STATE HIGHWAY NO. 439 FOR 0.15 MILE TO SIDE ROAD LEFT.  TURN LEFT
 JV6099'AND GO SOUTHWESTERLY FOR 0.25 MILE TO FARM DRIVEWAY ON
 JV6099'RIGHT.  CONTINUE SOUTHWEST FOR 0.1 MILE TO STATION ON LEFT AS
 JV6099'DESCRIBED.
 JV6099'
 JV6099'REFERENCE MARK NO. 4, A STANDARD DISK SET IN A 12X12 INCH
 JV6099'CONCRETE MONUMENT AND STAMPED ALMONY NO 4 1959.  THE MARK
 JV6099'PROJECTS 6 INCHES.
 JV6099'
 JV6099'REFERENCE MARK NO. 6, A STANDARD DISK SET IN A 12X12 INCH CONCRETE
 JV6099'MONUMENT AND STAMPED ALMONY NO 6 1959 IS 46-1/2 FEET SOUTHWEST OF A
 JV6099'40 INCH TREE, 17-1/2 FEET NORTHWEST OF APPROXIMATE CENTERLINE OF
 JV6099'ROAD AND 1.5 FEET EAST OF WITNESS POST.  THE MARK PROJECTS 6
 JV6099'INCHES.
 JV6099'
 JV6099'REFERENCE MARK NO. 2 (AZIMUTH MARK), A STANDARD DISK SET IN A
 JV6099'DRILLHOLE IN A CONCRETE HEADWALL OF CULVERT AND STAMPED ALMONY
 JV6099'1933 NO 2, IS 59 FEET NORTH OF TELEPHONE POLE, 66 FEET NORTH OF
 JV6099'POWERLINE POLE NO. 104821 AND 15 FEET WEST OF APPROXIMATE
 JV6099'CENTERLINE OF STATE HIGHWAY NO. 439.  THE MARK IS FLUSH WITH THE
 JV6099'CONCRETE.
 JV6099'
 JV6099'ALMONY 1933, A STANDARD DISK SET IN A MASS OF CONCRETE AND STAMPED
 JV6099'ALMONY 1933 IS 27 FEET NORTHWEST OF APPROXIMATE CENTERLINE OF ROAD,
 JV6099'11 FEET NORTH OF UTILITY POLE NO. 268302, 23-1/2 FEET NORTHEAST OF
 JV6099'A 40 INCH TREE AND 52-1/2 FEET SOUTHWEST OF A WALNUT TREE.  THE
 JV6099'MARK IS 12 INCHES BELOW THE SURFACE OF GROUND.  A TRAVERSE
 JV6099'CONNECTION WAS MADE BETWEEN ALMONY 1933 AND ALMONY RM 5 AND THE
 JV6099'DISTANCE IS SHOWN ABOVE.
 JV6099'
 JV6099'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6099
 JV6099                          STATION RECOVERY (1959)
 JV6099
 JV6099'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV6099'RECOVERED IN GOOD CONDITION.
 JV6099
 JV6099                          STATION RECOVERY (1990)
 JV6099
 JV6099'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6099'6.0 KM (3.7 MI) NORTHWESTERLY ALONG STATE HIGHWAY 439 FROM THE
 JV6099'JUNCTION OF STATE HIGHWAY 23 IN SHAWSVILLE, THENCE 0.4 KM (0.2 MI)
 JV6099'SOUTHWESTERLY ALONG ENSOR ROAD, 52.4 M (171.9 FT) SOUTHWEST OF THE
 JV6099'EXTENDED CENTER OF A DRIVEWAY, 25.2 M (82.7 FT) EAST OF TRIANGULATION
 JV6099'STATION ALMONY, 9.4 M (30.8 FT) SOUTHEAST OF THE ROAD CENTERLINE, 0.3
 JV6099'M (1.0 FT) BELOW THE LEVEL OF THE ROAD, AND THE MONUMENT IS RECESSED
 JV6099'0.2 M (0.7 FT) BELOW THE GROUND SURFACE.
 JV6099
 JV6099                          STATION RECOVERY (2024)
 JV6099
 JV6099'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 JV6099'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7177 ***********************************************************************
 HV7177  DESIGNATION -  ALPHA
 HV7177  PID         -  HV7177
 HV7177  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7177  COUNTRY     -  US
 HV7177  USGS QUAD   -  DEALE (2016)
 HV7177
 HV7177                         *CURRENT SURVEY CONTROL
 HV7177  ______________________________________________________________________
 HV7177* NAD 83(1991) POSITION- 38 51 44.60381(N) 076 31 45.27554(W)   ADJUSTED
 HV7177* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7177  ______________________________________________________________________
 HV7177  GEOID HEIGHT    -        -33.449 (meters)                     GEOID18
 HV7177  LAPLACE CORR    -         -3.77  (seconds)                    DEFLEC18
 HV7177  HORZ ORDER      -  THIRD
 HV7177
 HV7177.The horizontal coordinates were established by classical geodetic methods
 HV7177.and adjusted by the National Geodetic Survey in January 1992.
 HV7177
 HV7177.The orthometric height was scaled from a topographic map.
 HV7177
 HV7177.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7177.GEOID18 height accuracy estimate available here.
 HV7177
 HV7177.Click photographs - Photos may exist for this station.
 HV7177
 HV7177.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7177
 HV7177. The following values were computed from the NAD 83(1991) position.
 HV7177
 HV7177;                    North         East     Units Scale Factor Converg.
 HV7177;SPC MD       -   132,835.643   440,856.612   MT  0.99994988   +0 17 43.7
 HV7177;SPC MD       -   435,811.61  1,446,377.07   sFT  0.99994988   +0 17 43.7
 HV7177;UTM  18      - 4,302,617.159   367,320.647   MT  0.99981677   -0 57 34.8
 HV7177
 HV7177!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7177!SPC MD       -   1.00000529  x   0.99994988  =   0.99995517
 HV7177!UTM  18      -   1.00000529  x   0.99981677  =   0.99982206
 HV7177
 HV7177:                Primary Azimuth Mark                     Grid Az
 HV7177:SPC MD       -  CURTIS                                   109 30 54.7
 HV7177:UTM  18      -  CURTIS                                   110 46 13.2
 HV7177
 HV7177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6732002617(NAD 83)
 HV7177
 HV7177|---------------------------------------------------------------------|
 HV7177| PID    Reference Object                     Distance      Geod. Az  |
 HV7177|                                                           dddmmss.s |
 HV7177| HV6297 CURTIS                              APPROX. 2.9 KM 1094838.4 |
 HV7177| CX2036 ALPHA RP                              8.260 METERS 34540     |
 HV7177|---------------------------------------------------------------------|
 HV7177
 HV7177                          SUPERSEDED SURVEY CONTROL
 HV7177
 HV7177  NAD 83(1986)-  38 51 44.60086(N)    076 31 45.28747(W) AD(       ) 3
 HV7177  NAD 27      -  38 51 44.20300(N)    076 31 46.42600(W) AD(       ) 3
 HV7177  USSD        -  38 51 44.56500(N)    076 31 46.24500(W) AD(       ) 3
 HV7177
 HV7177.Superseded values are not recommended for survey control.
 HV7177
 HV7177.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7177.See file dsdata.pdf to determine how the superseded data were derived.
 HV7177
 HV7177_MARKER: Z = SEE DESCRIPTION
 HV7177_SETTING: 0 = UNSPECIFIED SETTING
 HV7177
 HV7177  HISTORY     - Date     Condition        Report By
 HV7177  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7177  HISTORY     - 1930     SEE DESCRIPTION  MDDNR
 HV7177  HISTORY     - 1933     MARK NOT FOUND   MDDNR
 HV7177  HISTORY     - 20031002 MARK NOT FOUND   USPSQD
 HV7177
 HV7177                          STATION DESCRIPTION
 HV7177
 HV7177'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7177'ON THE N SHORE OF WEST RIVER, BETWEEN SCAFFOLD AND CHESTONS
 HV7177'CREEKS, ABOUT 100 YARDS E OF SCAFFOLD CREEK, AND 3/4 MILE N OF
 HV7177'CEDAR POINT, AND 200 YARDS W OF SMALL WHITE SHANTY.  STATION IS 10
 HV7177'FEET ABOVE AND 5 FEET BACK FROM HIGH-WATER MARK.  STATION MARK IS
 HV7177'AN AUGER HOLE IN A HICKORY STUMP.  REFERENCE MARK IS MARKED BY A
 HV7177'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV7177'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV7177'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV7177'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 8.26 METERS
 HV7177'(27.10 FEET) FROM STATION IN BEARING N 14 DEG 20 MIN W. DISTANCES
 HV7177'AND BEARINGS FROM THE STATION TO OTHER POINTS OF REFERENCE ARE AS
 HV7177'FOLLOWS--TANGENT TO COUNALLOR POINT, 1 MILE, S 19 DEG 36 MIN W.
 HV7177'PEAK OF WHITE HOUSE, 1/2 MILE, S 66 DEG 56 MIN W.  NAIL IN BLAZE
 HV7177'IN 7-INCH HICKORY TREE, 11.33 METERS (37.2 FEET), N 46 DEG 21
 HV7177'MIN W.  NAIL IN BLAZE IN 7-INCH BLACK-OAK TREE, 9.74 METERS (31.96
 HV7177'FEET), N 17 DEG 35 MIN W.  NAIL IN BLAZE IN BLACK-OAK TREE, 7.58
 HV7177'METERS (24.87 FEET), N 48 DEG 54 MIN E.  W CHIMNEY OF HOUSE ON
 HV7177'OPPOSITE SHORE, 1 MILE, S 6 DEG 27 MIN E.
 HV7177
 HV7177                          STATION RECOVERY (1930)
 HV7177
 HV7177'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV7177'STATION WASHED AWAY.  STONE LYING IN WATER VISIBLE AT LOW TIDE AT
 HV7177'LEAST 50 YARDS OFFSHORE.  NEW STATION ERECTED ON SHORE AND MARKED
 HV7177'BY A PIECE OF IRON PIPE.
 HV7177
 HV7177                          STATION RECOVERY (1933)
 HV7177
 HV7177'RECOVERY NOTE BY MD DEPT OF NAT RES 1933
 HV7177'STATION REPORTED LOST BY H.E. COLLINS, ENGINEER.
 HV7177
 HV7177                          STATION RECOVERY (2003)
 HV7177
 HV7177'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7177'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5059 ***********************************************************************
 JV5059  DESIGNATION -  ALPIN
 JV5059  PID         -  JV5059
 JV5059  STATE/COUNTY-  MD/KENT
 JV5059  COUNTRY     -  US
 JV5059  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5059
 JV5059                         *CURRENT SURVEY CONTROL
 JV5059  ______________________________________________________________________
 JV5059* NAD 83(1991) POSITION- 39 06 08.09511(N) 076 10 08.62940(W)   ADJUSTED
 JV5059* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5059  ______________________________________________________________________
 JV5059  GEOID HEIGHT    -        -33.498 (meters)                     GEOID18
 JV5059  LAPLACE CORR    -         -2.12  (seconds)                    DEFLEC18
 JV5059  HORZ ORDER      -  SECOND
 JV5059
 JV5059.The horizontal coordinates were established by classical geodetic methods
 JV5059.and adjusted by the National Geodetic Survey in January 1992.
 JV5059
 JV5059.The orthometric height was scaled from a topographic map.
 JV5059
 JV5059.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5059.GEOID18 height accuracy estimate available here.
 JV5059
 JV5059.Click photographs - Photos may exist for this station.
 JV5059
 JV5059.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5059
 JV5059. The following values were computed from the NAD 83(1991) position.
 JV5059
 JV5059;                    North         East     Units Scale Factor Converg.
 JV5059;SPC MD       -   159,684.084   471,873.269   MT  0.99995764   +0 31 17.5
 JV5059;SPC MD       -   523,896.87  1,548,137.55   sFT  0.99995764   +0 31 17.5
 JV5059;UTM  18      - 4,328,773.815   398,913.132   MT  0.99972582   -0 44 14.6
 JV5059
 JV5059!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5059!SPC MD       -   1.00000514  x   0.99995764  =   0.99996278
 JV5059!UTM  18      -   1.00000514  x   0.99972582  =   0.99973096
 JV5059
 JV5059:                Primary Azimuth Mark                     Grid Az
 JV5059:SPC MD       -  ORCHARD PT FARMS WINDMILL                014 43 09.9
 JV5059:UTM  18      -  ORCHARD PT FARMS WINDMILL                015 58 42.0
 JV5059
 JV5059_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9891328773(NAD 83)
 JV5059
 JV5059|---------------------------------------------------------------------|
 JV5059| PID    Reference Object                     Distance      Geod. Az  |
 JV5059|                                                           dddmmss.s |
 JV5059| JV5024 ORCHARD PT FARMS WINDMILL           APPROX. 1.9 KM 0151427.4 |
 JV5059| CA9877 ALPIN RM 2                           27.465 METERS 03121     |
 JV5059| JV5028 PIONEER PT FARMS E BLACK TK         APPROX. 4.7 KM 1412010.8 |
 JV5059| CA9876 ALPIN RM 1                           18.250 METERS 15349     |
 JV5059| JV5034 PIONEER PT FARMS W BLACK TK         APPROX. 4.8 KM 1625144.8 |
 JV5059|---------------------------------------------------------------------|
 JV5059
 JV5059                          SUPERSEDED SURVEY CONTROL
 JV5059
 JV5059  NAD 83(1986)-  39 06 08.08890(N)    076 10 08.64076(W) AD(       ) 2
 JV5059  NAD 27      -  39 06 07.69200(N)    076 10 09.81200(W) AD(       ) 2
 JV5059
 JV5059.Superseded values are not recommended for survey control.
 JV5059
 JV5059.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5059.See file dsdata.pdf to determine how the superseded data were derived.
 JV5059
 JV5059_MARKER: DS = TRIANGULATION STATION DISK
 JV5059_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5059_STAMPING: ALPIN 1938
 JV5059_MARK LOGO: CGS
 JV5059_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5059+STABILITY: SURFACE MOTION
 JV5059
 JV5059  HISTORY     - Date     Condition        Report By
 JV5059  HISTORY     - 1938     MONUMENTED       CGS
 JV5059  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5059
 JV5059                          STATION DESCRIPTION
 JV5059
 JV5059'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5059'STATION IS LOCATED ON E SHORE OF LANGFORD BAY, ABOUT 1/2 MILE N
 JV5059'OF NICHOLS POINT ON THE W.R. MC ALPIN ESTATE NEAR A SMALL GROVE
 JV5059'OF LOCUST AND PERSIMMON TREES ON THE SW CORNER OF THE PROPERTY,
 JV5059'AND 11.0 METERS W OF THE N-S LINE WHICH BORDERS THE WESTERN EDGE
 JV5059'OF QUAKER NECK AND APPROXIMATELY 50 METERS E OF HIGH WATER.
 JV5059'
 JV5059'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5059'DISKS SET IN CONCRETE.
 JV5059'
 JV5059'REFERENCE MARK NO.1 IS SSE OF STATION ON N-S FENCE LINE (2 FEET
 JV5059'W) AND 28.5 METERS N OF SW CORNER OF FENCE.
 JV5059'
 JV5059'REFERENCE MARK NO.2 IS NNE OF STATION ON N-S FENCE LINE (1 FOOT
 JV5059'W) AND ABOUT 5 YARDS S OF 2 LONE DECIDUOUS TREES ON THE FENCE LINE.
 JV5059'
 JV5059'TO REACH STATION FROM CHESTERTOWN, TAKE POMONA ROAD, GO 4.0
 JV5059'MILES TO POMONA, TURN LEFT, CONTINUE ON CONCRETE ROAD 3.8 MILES
 JV5059'TO END OF PAVEMENT, CONTINUE AHEAD ON GRAVEL ROAD 0.5 MILE TO
 JV5059'FORK, TAKE RIGHT BRANCH AND CONTINUE ON GRAVEL ROAD 0.4 MILE,
 JV5059'TURN LEFT THROUGH GATE AND PROCEED 1.0 MILE ON PRIVATE ROAD TO
 JV5059'MAIN HOUSE AND BARNS, CONTINUE AROUND TO REAR OF HOUSE AND
 JV5059'PROCEED SW THROUGH PASTURE OR CULTIVATED FIELD 0.4 MILE TO
 JV5059'SMALL GROUP OF LOCUST AND PERSIMMON TREES AT E EDGE OF LANGFORD
 JV5059'BAY AND SW CORNER OF PROPERTY.
 JV5059'
 JV5059'THE TWO ELEVATED WATER TANKS ON THE RASKOB ESTATE ARE VISIBLE
 JV5059'FROM THE GROUND WITH A LITTLE CLEARING.
 JV5059
 JV5059                          STATION RECOVERY (1961)
 JV5059
 JV5059'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5059'STATION MARK AND REFERENCE MARKS WERE NOT RECOVERED.  IT IS
 JV5059'BELIEVED THAT ALL MARKS ARE STILL IN PLACE BUT WILL REQUIRE
 JV5059'EXTENSIVE CLEARING TO BE RECOVERED.  THE AREA IS OVERGROWN WITH
 JV5059'HEAVY BRUSH AND HONEYSUCKLE SO THAT THE GROUND IS NEARLY INVISIBLE
 JV5059'IN MOST PLACES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4278 ***********************************************************************
 JV4278  DESIGNATION -  ALTA VISTA WHITE STANDPIPE
 JV4278  PID         -  JV4278
 JV4278  STATE/COUNTY-  MD/MONTGOMERY
 JV4278  COUNTRY     -  US
 JV4278  USGS QUAD   -  KENSINGTON (2016)
 JV4278
 JV4278                         *CURRENT SURVEY CONTROL
 JV4278  ______________________________________________________________________
 JV4278* NAD 83(1993) POSITION- 39 00 18.01943(N) 077 06 32.52362(W)   ADJUSTED
 JV4278  ______________________________________________________________________
 JV4278  GEOID HEIGHT    -        -31.838 (meters)                     GEOID18
 JV4278  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 JV4278  HORZ ORDER      -  THIRD
 JV4278
 JV4278.The horizontal coordinates were established by classical geodetic methods
 JV4278.and adjusted by the National Geodetic Survey in November 1994.
 JV4278
 JV4278.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4278.GEOID18 height accuracy estimate available here.
 JV4278
 JV4278.Click photographs - Photos may exist for this station.
 JV4278
 JV4278.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4278
 JV4278. The following values were computed from the NAD 83(1993) position.
 JV4278
 JV4278;                    North         East     Units Scale Factor Converg.
 JV4278;SPC MD       -   148,567.498   390,555.865   MT  0.99995238   -0 04 06.4
 JV4278;SPC MD       -   487,425.20  1,281,348.70   sFT  0.99995238   -0 04 06.4
 JV4278;SPC VA N     - 2,149,469.622 3,620,477.784   MT  0.99997121   +0 52 05.3
 JV4278;SPC VA N     - 7,052,051.58 11,878,184.20   sFT  0.99997121   +0 52 05.3
 JV4278;UTM  18      - 4,319,448.005   317,379.225   MT  1.00001067   -1 19 40.0
 JV4278
 JV4278_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1737919448(NAD 83)
 JV4278
 JV4278                          SUPERSEDED SURVEY CONTROL
 JV4278
 JV4278  NAD 83(1991)-  39 00 18.01887(N)    077 06 32.52452(W) AD(       ) 3
 JV4278  NAD 83(1986)-  39 00 18.01828(N)    077 06 32.53399(W) AD(       ) 3
 JV4278  NAD 27      -  39 00 17.62400(N)    077 06 33.60800(W) AD(       ) 3
 JV4278
 JV4278.Superseded values are not recommended for survey control.
 JV4278
 JV4278.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4278.See file dsdata.pdf to determine how the superseded data were derived.
 JV4278
 JV4278_MARKER: 52 = STANDPIPE TANK
 JV4278
 JV4278  HISTORY     - Date     Condition        Report By
 JV4278  HISTORY     - 1934     FIRST OBSERVED   CGS
 JV4278
 JV4278                          STATION DESCRIPTION
 JV4278
 JV4278'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JV4278'ALTA VISTA WSSD IS AN X CUT NEAR THE CENTERLINE OF A FLANGE AROUND THE
 JV4278'TOP OF A STANDPIPE, 2 FT. TO THE RIGHT OF THE RIGHT-HAND LEG OF
 JV4278'A LADDER.
 JV4278'
 JV4278'0.23 FT. FROM OUTSIDE EDGE OF THE FLANGE, 0.27 FT. FROM INSIDE
 JV4278'EDGE OF THE FLANGE, AND 0.46 FT. FROM THE CENTERLINE BOLT
 JV4278'FASTENING THE RIGHT-HAND LEG OF THE LADDER TO THE FLANGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4277 ***********************************************************************
 JV4277  DESIGNATION -  ALTA VISTA WSSD 1927
 JV4277  PID         -  JV4277
 JV4277  STATE/COUNTY-  MD/MONTGOMERY
 JV4277  COUNTRY     -  US
 JV4277  USGS QUAD   -  KENSINGTON (2016)
 JV4277
 JV4277                         *CURRENT SURVEY CONTROL
 JV4277  ______________________________________________________________________
 JV4277* NAD 83(1993) POSITION- 39 00 17.93394(N) 077 06 32.35964(W)   ADJUSTED
 JV4277* NAVD 88 ORTHO HEIGHT -   120.    (meters)      394.    (feet) SCALED
 JV4277  ______________________________________________________________________
 JV4277  GEOID HEIGHT    -        -31.838 (meters)                     GEOID18
 JV4277  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 JV4277  HORZ ORDER      -  THIRD
 JV4277
 JV4277.The horizontal coordinates were established by classical geodetic methods
 JV4277.and adjusted by the National Geodetic Survey in November 1994.
 JV4277
 JV4277.The orthometric height was scaled from a topographic map.
 JV4277
 JV4277.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4277.GEOID18 height accuracy estimate available here.
 JV4277
 JV4277.Click photographs - Photos may exist for this station.
 JV4277
 JV4277.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4277
 JV4277. The following values were computed from the NAD 83(1993) position.
 JV4277
 JV4277;                    North         East     Units Scale Factor Converg.
 JV4277;SPC MD       -   148,564.857   390,559.807   MT  0.99995238   -0 04 06.3
 JV4277;SPC MD       -   487,416.54  1,281,361.63   sFT  0.99995238   -0 04 06.3
 JV4277;SPC VA N     - 2,149,467.046 3,620,481.769   MT  0.99997120   +0 52 05.4
 JV4277;SPC VA N     - 7,052,043.13 11,878,197.27   sFT  0.99997120   +0 52 05.4
 JV4277;UTM  18      - 4,319,445.278   317,383.108   MT  1.00001065   -1 19 39.9
 JV4277
 JV4277!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4277!SPC MD       -   0.99998620  x   0.99995238  =   0.99993858
 JV4277!SPC VA N     -   0.99998620  x   0.99997120  =   0.99995740
 JV4277!UTM  18      -   0.99998620  x   1.00001065  =   0.99999685
 JV4277
 JV4277_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1738319445(NAD 83)
 JV4277
 JV4277                          SUPERSEDED SURVEY CONTROL
 JV4277
 JV4277  NAD 83(1991)-  39 00 17.93352(N)    077 06 32.36066(W) AD(       ) 3
 JV4277  NAD 83(1986)-  39 00 17.93293(N)    077 06 32.37016(W) AD(       ) 3
 JV4277  NAD 27      -  39 00 17.53900(N)    077 06 33.44500(W) AD(       ) 3
 JV4277
 JV4277.Superseded values are not recommended for survey control.
 JV4277
 JV4277.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4277.See file dsdata.pdf to determine how the superseded data were derived.
 JV4277
 JV4277_MARKER: X = CHISELED CROSS
 JV4277_SETTING: 0 = UNSPECIFIED SETTING
 JV4277_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4277
 JV4277  HISTORY     - Date     Condition        Report By
 JV4277  HISTORY     - 1955     MONUMENTED       WSSC
 JV4277
 JV4277                          STATION DESCRIPTION
 JV4277
 JV4277'DESCRIBED BY WASH SUBURB SAN COMM 1955 (JHP)
 JV4277'STATION IS AN X CUT NEAR THE CENTERLINE OF A FLANGE AROUND THE
 JV4277'TOP OF A STANDPIPE, 2 FT. TO THE RIGHT OF THE RIGHT-HAND LEG OF
 JV4277'A LADDER.
 JV4277'
 JV4277'0.23 FT. FROM OUTSIDE EDGE OF THE FLANGE, 0.27 FT. FROM INSIDE
 JV4277'EDGE OF THE FLANGE, AND 0.46 FT. FROM THE CENTERLINE BOLT
 JV4277'FASTENING THE RIGHT-HAND LEG OF THE LADDER TO THE FLANGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5435 ***********************************************************************
 JV5435  DESIGNATION -  AMELIA
 JV5435  PID         -  JV5435
 JV5435  STATE/COUNTY-  MD/BALTIMORE
 JV5435  COUNTRY     -  US
 JV5435  USGS QUAD   -  TOWSON (2016)
 JV5435
 JV5435                         *CURRENT SURVEY CONTROL
 JV5435  ______________________________________________________________________
 JV5435* NAD 83(1991) POSITION- 39 24 09.20704(N) 076 33 18.44014(W)   ADJUSTED
 JV5435* NAVD 88 ORTHO HEIGHT -   148.    (meters)      486.    (feet) SCALED
 JV5435  ______________________________________________________________________
 JV5435  GEOID HEIGHT    -        -32.682 (meters)                     GEOID18
 JV5435  LAPLACE CORR    -         -4.20  (seconds)                    DEFLEC18
 JV5435  HORZ ORDER      -  THIRD
 JV5435
 JV5435.The horizontal coordinates were established by classical geodetic methods
 JV5435.and adjusted by the National Geodetic Survey in January 1992.
 JV5435
 JV5435.The orthometric height was scaled from a topographic map.
 JV5435
 JV5435.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5435.GEOID18 height accuracy estimate available here.
 JV5435
 JV5435.Click photographs - Photos may exist for this station.
 JV5435
 JV5435.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5435
 JV5435. The following values were computed from the NAD 83(1991) position.
 JV5435
 JV5435;                    North         East     Units Scale Factor Converg.
 JV5435;SPC MD       -   192,789.810   438,318.375   MT  0.99999205   +0 16 45.2
 JV5435;SPC MD       -   632,511.23  1,438,049.54   sFT  0.99999205   +0 16 45.2
 JV5435;UTM  18      - 4,362,603.974   366,102.385   MT  0.99982074   -0 59 14.2
 JV5435
 JV5435!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5435!SPC MD       -   0.99998194  x   0.99999205  =   0.99997399
 JV5435!UTM  18      -   0.99998194  x   0.99982074  =   0.99980269
 JV5435
 JV5435:                Primary Azimuth Mark                     Grid Az
 JV5435:SPC MD       -  RIDGELY                                  317 07 49.4
 JV5435:UTM  18      -  RIDGELY                                  318 23 48.8
 JV5435
 JV5435_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6610262603(NAD 83)
 JV5435
 JV5435|---------------------------------------------------------------------|
 JV5435| PID    Reference Object                     Distance      Geod. Az  |
 JV5435|                                                           dddmmss.s |
 JV5435| CA9879 AMELIA RM 1                          20.970 METERS 17527     |
 JV5435| CA9878 AMELIA AZ MK                                       1811647.4 |
 JV5435| JV5458 TOWSON COUNTY WATER TANK            APPROX. 1.6 KM 2525211.7 |
 JV5435| JV5457 TOWSON BENDIX RADIO WATER TANK      APPROX. 1.8 KM 2532802.5 |
 JV5435| JV5459 RIDGELY                             APPROX. 2.1 KM 3172434.6 |
 JV5435| CA9880 AMELIA RM 2                          14.320 METERS 32613     |
 JV5435|---------------------------------------------------------------------|
 JV5435
 JV5435                          SUPERSEDED SURVEY CONTROL
 JV5435
 JV5435  NAD 83(1986)-  39 24 09.20289(N)    076 33 18.44774(W) AD(       ) 3
 JV5435  NAD 27      -  39 24 08.81740(N)    076 33 19.56910(W) AD(       ) 3
 JV5435
 JV5435.Superseded values are not recommended for survey control.
 JV5435
 JV5435.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5435.See file dsdata.pdf to determine how the superseded data were derived.
 JV5435
 JV5435_MARKER: DS = TRIANGULATION STATION DISK
 JV5435_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5435_STAMPING: AMELIA 1958
 JV5435_MARK LOGO: CGS
 JV5435_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5435+STABILITY: SURFACE MOTION
 JV5435
 JV5435  HISTORY     - Date     Condition        Report By
 JV5435  HISTORY     - 1958     MONUMENTED       CGS
 JV5435  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV5435  HISTORY     - 20020323 GOOD             USPSQD
 JV5435
 JV5435                          STATION DESCRIPTION
 JV5435
 JV5435'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5435'THE STATION IS LOCATED ABOUT 2-1/2 MILES EAST OF TOWSON AND ABOUT
 JV5435'0.25 MILE NORTH OF JOPPA ROAD.  IT IS 31 FEET EAST OF POWER LINE
 JV5435'POLE, 23-1/2 FEET EAST OF CENTER OF DRIVEWAY AND 16-1/2 EAST
 JV5435'OF A 14 INCH TREE.  THE MARK IS A STANDARD TRIANGULATION
 JV5435'STATION MARK DISK SET IN CONCRETE WHICH IS SET FLUSH AND THE
 JV5435'DISK IS STAMPED AMELIA 1958.
 JV5435'
 JV5435'REFERENCE MARK NO. 1 IS 19 FEET SOUTH-SOUTHEAST OF DRIVEWAY AND
 JV5435'19 FEET SOUTH-SOUTHEAST OF POWER LINE POLE.  THE MARK IS A
 JV5435'STANDARD REFERENCE MARK DISK SET IN CONCRETE WHICH IS SET
 JV5435'FLUSH AND THE DISK IS STAMPED AMELIA NO 1 1958.
 JV5435'
 JV5435'REFERENCE MARK NO. 2 IS 62 FEET EAST OF THE CENTER OF
 JV5435'DRIVEWAY, 43 FEET NORTH-NORTHEAST OF POWER LINE POLE, 6 FEET
 JV5435'SOUTHEAST OF A 12 INCH TREE AND 5 FEET WEST OF A 10 INCH
 JV5435'TREE.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN
 JV5435'CONCRETE WHICH IS SET FLUSH AND DISK IS STAMPED AMELIA NO 2 1958.
 JV5435'
 JV5435'AZIMUTH MARK IS 73 FEET EAST-SOUTHEAST OF THE CENTER OF
 JV5435'DUNWOODY ROAD, 23 FEET SOUTH OF THE CENTER OF OAKLEIGH ROAD AND 7
 JV5435'FEET SOUTH OF THE EDGE OF CURB.  THE MARK IS A STANDARD
 JV5435'AZIMUTH MARK DISK SET IN DRILL HOLE IN SIDE WALK.
 JV5435'
 JV5435'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 111 AND
 JV5435'STATE HIGHWAY 146 AND 148 IN TOWSON, GO EAST ON STATE HIGHWAY
 JV5435'148 (JOPPA ROAD) FOR 0.55 MILE TO FORKS, KEEP LEFT AND CONTINUE
 JV5435'EAST ON JOPPA ROAD FOR 2.0 MILES TO OAKLEIGH STREET
 JV5435'LEFT.  TURN LEFT AND GO NORTH ON OAKLEIGH STREET FOR 0.2 MILE TO
 JV5435'DUNWOODY ROAD, TURN RIGHT ON DUNWOODY ROAD FOR 75 FEET AND
 JV5435'AZIMUTH MARK IN SIDE WALK ON RIGHT AS DESCRIBED.  CONTINUE EAST
 JV5435'FOR ABOUT 75 FEET TO SIDE ROAD LEFT, TURN LEFT AND GO NORTH
 JV5435'UP HILL FOR 0.05 MILE TO THE STATION ON RIGHT AS DESCRIBED.
 JV5435'
 JV5435'AZIMUTH MARK IS VISIBLE FROM THE GROUND.
 JV5435'
 JV5435'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV5435
 JV5435                          STATION RECOVERY (1994)
 JV5435
 JV5435'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5435'MARK NOT FOUND.
 JV5435
 JV5435                          STATION RECOVERY (2002)
 JV5435
 JV5435'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 JV5435'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2454 ***********************************************************************
 JV2454  DESIGNATION -  AMOCO 2
 JV2454  PID         -  JV2454
 JV2454  STATE/COUNTY-  MD/HOWARD
 JV2454  COUNTRY     -  US
 JV2454  USGS QUAD   -  WOODBINE (2016)
 JV2454
 JV2454                         *CURRENT SURVEY CONTROL
 JV2454  ______________________________________________________________________
 JV2454* NAD 83(1993) POSITION- 39 20 15.73560(N) 077 02 54.61760(W)   NO CHECK
 JV2454* NAVD 88 ORTHO HEIGHT -   187.24  (meters)      614.3   (feet) RESET
 JV2454  ______________________________________________________________________
 JV2454  GEOID HEIGHT    -        -31.870 (meters)                     GEOID18
 JV2454  LAPLACE CORR    -         -0.95  (seconds)                    DEFLEC18
 JV2454  HORZ ORDER      -  SECOND
 JV2454  VERT ORDER      -  THIRD
 JV2454
 JV2454.The horizontal coordinates were established by classical geodetic methods
 JV2454.and adjusted by the National Geodetic Survey in November 1994.
 JV2454
 JV2454.No horizontal observational check was made to the station.
 JV2454
 JV2454.The orthometric height was computed from unverified reset data.
 JV2454
 JV2454.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2454.GEOID18 height accuracy estimate available here.
 JV2454
 JV2454.Click photographs - Photos may exist for this station.
 JV2454
 JV2454.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2454
 JV2454. The following values were computed from the NAD 83(1993) position.
 JV2454
 JV2454;                    North         East     Units Scale Factor Converg.
 JV2454;SPC MD       -   185,497.480   395,818.317   MT  0.99998228   -0 01 49.6
 JV2454;SPC MD       -   608,586.32  1,298,613.93   sFT  0.99998228   -0 01 49.6
 JV2454;UTM  18      - 4,356,254.124   323,455.192   MT  0.99998377   -1 17 55.9
 JV2454
 JV2454!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2454!SPC MD       -   0.99997562  x   0.99998228  =   0.99995791
 JV2454!UTM  18      -   0.99997562  x   0.99998377  =   0.99995940
 JV2454
 JV2454:                Primary Azimuth Mark                     Grid Az
 JV2454:SPC MD       -  LISBON                                   281 48 30.0
 JV2454:UTM  18      -  LISBON                                   283 04 36.3
 JV2454
 JV2454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2345556254(NAD 83)
 JV2454
 JV2454|---------------------------------------------------------------------|
 JV2454| PID    Reference Object                     Distance      Geod. Az  |
 JV2454|                                                           dddmmss.s |
 JV2454| JV2455 AMOCO 2 RM 3                          2.684 METERS 19043     |
 JV2454| JV2452 AMOCO                                10.611 METERS 22658     |
 JV2454| JV2456 AMOCO 2 RM 4                          5.153 METERS 28022     |
 JV2454| JV2446 LISBON                              APPROX. 1.3 KM 2814640.4 |
 JV2454|---------------------------------------------------------------------|
 JV2454
 JV2454                          SUPERSEDED SURVEY CONTROL
 JV2454
 JV2454  NAD 83(1991)-  39 20 15.73582(N)    077 02 54.61809(W) AD(       ) 2
 JV2454  NAD 83(1986)-  39 20 15.73506(N)    077 02 54.62677(W) AD(       ) 2
 JV2454  NAD 27      -  39 20 15.35932(N)    077 02 55.70069(W) AD(       ) 2
 JV2454  NGVD 29 (??/??/??)  187.45   (m)          615.0    (f) RESET       3  
 JV2454  NGVD 29             187.42   (m)          614.9    (f) LEVELING    3  
 JV2454
 JV2454.Superseded values are not recommended for survey control.
 JV2454
 JV2454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2454.See file dsdata.pdf to determine how the superseded data were derived.
 JV2454
 JV2454_MARKER: DS = TRIANGULATION STATION DISK
 JV2454_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2454_STAMPING: AMOCO 2 1971
 JV2454_MARK LOGO: CGS
 JV2454_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2454+STABILITY: SURFACE MOTION
 JV2454
 JV2454  HISTORY     - Date     Condition        Report By
 JV2454  HISTORY     - 1971     MONUMENTED       NGS
 JV2454  HISTORY     - 1971     GOOD             NGS
 JV2454  HISTORY     - 1975     GOOD             NGS
 JV2454
 JV2454                          STATION DESCRIPTION
 JV2454
 JV2454'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV2454'STATION IS LOCATED ON THE NORTH SIDE OF HIGHWAY I-70N, ABOUT 6.5
 JV2454'MILES EAST-SOUTHEAST OF MOUNT AIRY, 2.0 MILES NORTHWEST OF
 JV2454'COOKSVILLE, AND 1.3 MILES NORTHEAST OF LISBON, WHERE THE MORGAN
 JV2454'STATION ROAD CROSSES OVER INTERSTATE HIGHWAY I-70N.
 JV2454'
 JV2454'STATION IS 85 FEET EAST OF THE CENTERLINE OF MORGAN STATION ROAD,
 JV2454'71 FEET EAST-NORTHEAST OF THE NORTHEAST END OF A BRIDGE, 19.5
 JV2454'FEET EAST-SOUTHEAST OF POWERLINE POLE NO. G AND E 196780, AND 3
 JV2454'FEET NORTH OF A METAL WITNESS POST AND SIGN.  THE DISK IS SET IN
 JV2454'THE TOP OF A ROUND CONCRETE MONUMENT THAT IS FLUSH WITH THE
 JV2454'GROUND AND THE DISK IS STAMPED AMOCO 2 1971.
 JV2454'
 JV2454'REFERENCE MARK NO. 3 IS 68 FEET EAST-SOUTHEAST OF THE NORTHEAST
 JV2454'CORNER OF BRIDGE, 24 FEET EAST-SOUTHEAST OF POWERLINE POLE NO. G
 JV2454'AND E 196780, AND 6.5 FEET SOUTH OF A METAL WITNESS POST AND
 JV2454'SIGN.  THE MARK IS SET IN THE TOP OF A ROUND CONCRETE MONUMENT
 JV2454'FLUSH WITH THE GROUND AND THE DISK IS STAMPED AMOCO 2 NO 3 1971.
 JV2454'
 JV2454'REFERENCE MARK NO. 4 IS 54 FEET EAST OF THE NORTHEAST CORNER OF
 JV2454'THE BRIDGE, 6.5 FEET SOUTH OF POWERLINE POLE NO. G AND E 196780
 JV2454'AND IS SET FLUSH WITH THE GROUND.  THE DISK IS STAMPED AMOCO 2
 JV2454'NO 4 1971.
 JV2454'
 JV2454'NO SAFE SUITABLE PLACE TO SET AN AZIMUTH MARK AT THIS TIME DUE
 JV2454'TO CONSTRUCTION.  HOWEVER, THE CHURCH SPIRE LISTED ABOVE, OR
 JV2454'STATION LISBON 2 CAN BE COMPUTED FOR AZIMUTH CONTROL, AS LISBON
 JV2454'2 WILL SEE STATION AFTER CLEARING OF RIGHT-OF-WAY FOR NEW HIGHWAY
 JV2454'IS COMPLETED.
 JV2454'
 JV2454'TO REACH FROM THE MAIN CROSSROAD IN LISBON.  GO EASTERLY ON OLD
 JV2454'U.S. HWY. 40 FOR 1.25 MILE, TURN LEFT AND GO NORTH ON MORGAN
 JV2454'STATION ROAD FOR 0.35 MILE TO WHERE IT CROSSES OVER I-70N AND
 JV2454'THE STATION AT THE NORTHEAST END OF BRIDGE AS DESCRIBED.
 JV2454
 JV2454                          STATION RECOVERY (1971)
 JV2454
 JV2454'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV2454'6.6 MI E FROM RIDGEVILLE.
 JV2454'LOCATED 2.0 MILES NORTHWEST OF COOKSVILLE, 1.35 MILES
 JV2454'NORTHEAST OF LISBON ON A HIGH CUT BANK ON NORTH SIDE OF HIGHWAY
 JV2454'I-70N.  TO REACH FROM THE INTERCHANGE OF I-70N AND STATE
 JV2454'HIGHWAY 97, GO WESTERLY ON I-70N FOR 1.9 MILES TO A BRIDGE
 JV2454'OVER HIGHWAY AND MARK ON TOP OF HIGH CUT BANK ON RIGHT.  IT IS
 JV2454'85 FEET EAST OF CENTERLINE OF MORGAN STATION ROAD, 71 FEET
 JV2454'EAST-NORTHEAST OF THE NORTHEAST CORNER OF A BRIDGE, 19.5 FEET
 JV2454'EAST-SOUTHEAST OF A POWERLINE POLE NO. G AND E 196780, AND 3
 JV2454'FEET NORTH OF A METAL WITNESS POST AND SIGN.  THE MARK IS SET
 JV2454'IN THE TOP OF A ROUND CONCRETE MONUMENT THAT IS FLUSH WITH THE
 JV2454'SURFACE OF THE GROUND.
 JV2454
 JV2454                          STATION RECOVERY (1975)
 JV2454
 JV2454'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV2454'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV2454'CONDITION AS DESCRIBED IN THE 1971 DESCRIPTION.  NO OBSERVATIONS
 JV2454'WERE TAKEN AT THIS DATE.
 JV2454'
 JV2454'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV2454'1-1/4 MILES NORTHEAST OF LISBON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2455 ***********************************************************************
 JV2455  DESIGNATION -  AMOCO 2 RM 3
 JV2455  PID         -  JV2455
 JV2455  STATE/COUNTY-  MD/HOWARD
 JV2455  COUNTRY     -  US
 JV2455  USGS QUAD   -  WOODBINE (2016)
 JV2455
 JV2455                         *CURRENT SURVEY CONTROL
 JV2455  ______________________________________________________________________
 JV2455* NAD 83(1986) POSITION- 39 20 15.65   (N) 077 02 54.64   (W)   HD_HELD1
 JV2455* NAVD 88 ORTHO HEIGHT -   187.20  (meters)      614.2   (feet) RESET
 JV2455  ______________________________________________________________________
 JV2455  GEOID HEIGHT    -        -31.870 (meters)                     GEOID18
 JV2455  VERT ORDER      -  THIRD
 JV2455
 JV2455.The horizontal coordinates were determined by differentially corrected
 JV2455.hand held GPS observations or other comparable positioning techniques
 JV2455.and have an estimated accuracy of +/- 3 meters.
 JV2455
 JV2455.The orthometric height was computed from unverified reset data.
 JV2455
 JV2455.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2455.GEOID18 height accuracy estimate available here.
 JV2455
 JV2455.Click photographs - Photos may exist for this station.
 JV2455
 JV2455;                    North         East    Units  Estimated Accuracy
 JV2455;SPC MD       -   185,494.8     395,817.8     MT  (+/- 3 meters HH1 GPS) 
 JV2455
 JV2455_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2345456251(NAD 83)
 JV2455
 JV2455                          SUPERSEDED SURVEY CONTROL
 JV2455
 JV2455  NGVD 29 (??/??/??)  187.42   (m)          614.9    (f) RESET       3  
 JV2455
 JV2455.Superseded values are not recommended for survey control.
 JV2455
 JV2455.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2455.See file dsdata.pdf to determine how the superseded data were derived.
 JV2455
 JV2455_MARKER: DR = REFERENCE MARK DISK
 JV2455_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2455_STAMPING: AMOCO 2 NO 3 1971
 JV2455_MARK LOGO: CGS
 JV2455_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2455+STABILITY: SURFACE MOTION
 JV2455
 JV2455  HISTORY     - Date     Condition        Report By
 JV2455  HISTORY     - 1971     MONUMENTED       NGS
 JV2455
 JV2455                          STATION DESCRIPTION
 JV2455
 JV2455'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV2455'6.6 MI E FROM RIDGEVILLE.
 JV2455'LOCATED 2.0 MILES NORTHWEST OF COOKSVILLE, 1.35 MILES NORTHEAST
 JV2455'OF LISBON ON A HIGH CUT BANK ON NORTH SIDE OF I-70N HIGHWAY.
 JV2455'TO REACH FROM THE INTERCHANGE OF I-70N AND STATE HIGHWAY 97,
 JV2455'GO WESTERLY ON I-70N FOR 1.9 MILES TO A BRIDGE OVER HIGHWAY AND
 JV2455'THE MARK ON TOP OF HIGH CUT BANK ON THE RIGHT.  IT IS 68 FEET
 JV2455'EAST-SOUTHEAST OF THE NORTHEAST CORNER OF BRIDGE OVER I-70N, 24
 JV2455'FEET EAST-SOUTHEAST OF POWERLINE POLE NO. G AND E 196780 AND
 JV2455'6.5 FEET SOUTH OF METAL WITNESS SIGN AND POST.  THE DISK IS
 JV2455'SET IN THE TOP OF A ROUND CONCRETE MONUMENT FLUSH WITH THE
 JV2455'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2456 ***********************************************************************
 JV2456  DESIGNATION -  AMOCO 2 RM 4
 JV2456  PID         -  JV2456
 JV2456  STATE/COUNTY-  MD/HOWARD
 JV2456  COUNTRY     -  US
 JV2456  USGS QUAD   -  WOODBINE (2016)
 JV2456
 JV2456                         *CURRENT SURVEY CONTROL
 JV2456  ______________________________________________________________________
 JV2456* NAD 83(1986) POSITION- 39 20 15.77   (N) 077 02 54.83   (W)   HD_HELD1
 JV2456* NAVD 88 ORTHO HEIGHT -   187.03  (meters)      613.6   (feet) RESET
 JV2456  ______________________________________________________________________
 JV2456  GEOID HEIGHT    -        -31.870 (meters)                     GEOID18
 JV2456  VERT ORDER      -  THIRD
 JV2456
 JV2456.The horizontal coordinates were determined by differentially corrected
 JV2456.hand held GPS observations or other comparable positioning techniques
 JV2456.and have an estimated accuracy of +/- 3 meters.
 JV2456
 JV2456.The orthometric height was computed from unverified reset data.
 JV2456
 JV2456.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2456.GEOID18 height accuracy estimate available here.
 JV2456
 JV2456.Click photographs - Photos may exist for this station.
 JV2456
 JV2456;                    North         East    Units  Estimated Accuracy
 JV2456;SPC MD       -   185,498.5     395,813.2     MT  (+/- 3 meters HH1 GPS) 
 JV2456
 JV2456_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2345056255(NAD 83)
 JV2456
 JV2456                          SUPERSEDED SURVEY CONTROL
 JV2456
 JV2456  NGVD 29 (??/??/??)  187.24   (m)          614.3    (f) RESET       3  
 JV2456
 JV2456.Superseded values are not recommended for survey control.
 JV2456
 JV2456.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2456.See file dsdata.pdf to determine how the superseded data were derived.
 JV2456
 JV2456_MARKER: DR = REFERENCE MARK DISK
 JV2456_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2456_STAMPING: AMOCO 2 NO 4 1971
 JV2456_MARK LOGO: CGS
 JV2456_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2456+STABILITY: SURFACE MOTION
 JV2456
 JV2456  HISTORY     - Date     Condition        Report By
 JV2456  HISTORY     - 1971     MONUMENTED       NGS
 JV2456
 JV2456                          STATION DESCRIPTION
 JV2456
 JV2456'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV2456'6.6 MI E FROM RIDGEVILLE.
 JV2456'LOCATED 2.0 MILES NORTHWEST OF COOKSVILLE, 1.35 MILES NORTHEAST
 JV2456'OF LISBON ON A HIGH CUT BANK ON NORTH SIDE OF I-70 N HIGHWAY.
 JV2456'TO REACH FROM THE INTERCHANGE OF I-70N AND STATE HIGHWAY 97,
 JV2456'GO WESTERLY ON I-70N FOR 1.9 MILES TO A BRIDGE OVER HIGHWAY AND
 JV2456'THE MARK ON TOP OF HIGH CUT BANK ON RIGHT.  IT IS 54 FEET
 JV2456'EAST OF THE NORTHEAST CORNER OF THE BRIDGE AND 6.5 FEET
 JV2456'SOUTH OF POWERLINE POLE NO. G AND E 196780.  SET IN THE TOP OF
 JV2456'A ROUND CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6266 ***********************************************************************
 JV6266  DESIGNATION -  AMOSS
 JV6266  PID         -  JV6266
 JV6266  STATE/COUNTY-  MD/HARFORD
 JV6266  COUNTRY     -  US
 JV6266  USGS QUAD   -  NORRISVILLE (2016)
 JV6266
 JV6266                         *CURRENT SURVEY CONTROL
 JV6266  ______________________________________________________________________
 JV6266* NAD 83(2011) POSITION- 39 42 23.33470(N) 076 30 07.20577(W)   ADJUSTED
 JV6266* NAD 83(2011) ELLIP HT-   179.879 (meters)        (06/27/12)   ADJUSTED
 JV6266* NAD 83(2011) EPOCH   -  2010.00
 JV6266* NAVD 88 ORTHO HEIGHT -   212.423 (meters)      696.92  (feet) ADJUSTED
 JV6266  ______________________________________________________________________
 JV6266  GEOID HEIGHT    -        -32.520 (meters)                     GEOID18
 JV6266  NAD 83(2011) X  -  1,146,920.641 (meters)                     COMP
 JV6266  NAD 83(2011) Y  - -4,778,003.612 (meters)                     COMP
 JV6266  NAD 83(2011) Z  -  4,053,081.666 (meters)                     COMP
 JV6266  LAPLACE CORR    -         -3.18  (seconds)                    DEFLEC18
 JV6266  DYNAMIC HEIGHT  -        212.317 (meters)      696.58  (feet) COMP
 JV6266  MODELED GRAVITY -    980,120.6   (mgal)                       NAVD 88
 JV6266
 JV6266  VERT ORDER      -  FIRST     CLASS II
 JV6266
 JV6266  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6266  Standards:
 JV6266         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6266            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6266  -------------------------------------------------------------------
 JV6266  NETWORK    2.17   5.37           0.93   0.74   2.74      0.56931698
 JV6266  -------------------------------------------------------------------
 JV6266  Click here for local accuracies and other accuracy information.
 JV6266
 JV6266.The horizontal coordinates were established by GPS observations
 JV6266.and adjusted by the National Geodetic Survey in June 2012.
 JV6266
 JV6266.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6266.been affixed to the stable North American tectonic plate. See 
 JV6266.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6266
 JV6266.The horizontal coordinates are valid at the epoch date displayed above
 JV6266.which is a decimal equivalence of Year/Month/Day.
 JV6266
 JV6266.The orthometric height was determined by differential leveling and
 JV6266.adjusted by the NATIONAL GEODETIC SURVEY
 JV6266.in June 1991.
 JV6266
 JV6266.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6266.GEOID18 height accuracy estimate available here.
 JV6266
 JV6266.Click photographs - Photos may exist for this station.
 JV6266
 JV6266.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6266
 JV6266.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6266
 JV6266.The ellipsoidal height was determined by GPS observations
 JV6266.and is referenced to NAD 83.
 JV6266
 JV6266.The dynamic height is computed by dividing the NAVD 88
 JV6266.geopotential number by the normal gravity value computed on the
 JV6266.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6266.degrees latitude (g = 980.6199 gals.).
 JV6266
 JV6266.The modeled gravity was interpolated from observed gravity values.
 JV6266
 JV6266. The following values were computed from the NAD 83(2011) position.
 JV6266
 JV6266;                    North         East     Units Scale Factor Converg.
 JV6266;SPC MD       -   226,557.181   442,709.659   MT  1.00005494   +0 18 45.2
 JV6266;SPC MD       -   743,296.35  1,452,456.61   sFT  1.00005494   +0 18 45.2
 JV6266;SPC PA S     -    42,189.045   707,027.355   MT  1.00004321   +0 48 34.9
 JV6266;SPC PA S     -   138,415.23  2,319,638.91   sFT  1.00004321   +0 48 34.9
 JV6266;UTM  18      - 4,396,258.746   371,239.591   MT  0.99980412   -0 57 34.9
 JV6266
 JV6266!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6266!SPC MD       -   0.99997178  x   1.00005494  =   1.00002672
 JV6266!SPC PA S     -   0.99997178  x   1.00004321  =   1.00001499
 JV6266!UTM  18      -   0.99997178  x   0.99980412  =   0.99977591
 JV6266
 JV6266_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7123996258(NAD 83)
 JV6266
 JV6266|---------------------------------------------------------------------|
 JV6266| PID    Reference Object                     Distance      Geod. Az  |
 JV6266|                                                           dddmmss.s |
 JV6266| JV6303 AMOSS AZ MK                         311.568 METERS 17020     |
 JV6266|---------------------------------------------------------------------|
 JV6266
 JV6266                          SUPERSEDED SURVEY CONTROL
 JV6266
 JV6266  NAD 83(2007)-  39 42 23.33498(N)    076 30 07.20644(W) AD(2002.00) 0
 JV6266  ELLIP H (02/10/07)  179.903  (m)                       GP(2002.00)    
 JV6266  ELLIP H (09/18/02)  179.948  (m)                       GP(       ) 4 2
 JV6266  NAD 83(1991)-  39 42 23.33502(N)    076 30 07.20532(W) AD(       ) 1
 JV6266  ELLIP H (01/27/92)  179.940  (m)                       GP(       ) 4 1
 JV6266  NAD 83(1986)-  39 42 23.32785(N)    076 30 07.21086(W) AD(       ) 1
 JV6266  NGVD 29             212.66   (m)          697.7    (f) LEVELING    3  
 JV6266
 JV6266.Superseded values are not recommended for survey control.
 JV6266
 JV6266.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6266.See file dsdata.pdf to determine how the superseded data were derived.
 JV6266
 JV6266_MARKER: DD = SURVEY DISK
 JV6266_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6266_STAMPING: AMOSS 112 1989
 JV6266_MARK LOGO: MD-025
 JV6266_PROJECTION: PROJECTING 8 CENTIMETERS
 JV6266_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6266_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6266+STABILITY: SURFACE MOTION
 JV6266_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6266+SATELLITE: SATELLITE OBSERVATIONS - June 09, 2020
 JV6266
 JV6266  HISTORY     - Date     Condition        Report By
 JV6266  HISTORY     - 1989     MONUMENTED       RDA
 JV6266  HISTORY     - 20090518 GOOD             MDSHA
 JV6266  HISTORY     - 20200609 GOOD             BASE9
 JV6266
 JV6266                          STATION DESCRIPTION
 JV6266
 JV6266'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6266'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6266'1.7 MILES EAST OF NORRISVILLE.  TO REACH THE STATION FROM THE
 JV6266'INTERSECTION OF STATE HIGHWAY 23 AND STATE HIGHWAY 136 PROCEED EAST
 JV6266'ALONG HIGHWAY 136 1.7 MILES TO ITS INTERSECTION WITH CAREA RAOD.
 JV6266'TURN LEFT AND PROCEED NORTH ALONG CAREA ROAD 0.2 MILES TO THE STATION
 JV6266'ON THE RIGHT.  THE STATION IS A STANDARD HARFORD COUNTY STATION DISC
 JV6266'SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 112 AMOSS 1989.
 JV6266'THE STATION IS 6.1 FEET SOUTH OF C AND P OF MARYLAND TELEPHONE POLE
 JV6266'NUMBER 4, 16.2 FEET EAST OF THE CENTERLINE OF CAREA ROAD, 132.2 FEET
 JV6266'NORTH OF THE CENTERLINE OF DRIVEWAY ADDRESS BOX 5016.
 JV6266
 JV6266                          STATION RECOVERY (2009)
 JV6266
 JV6266'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (JMR)
 JV6266'RECOVERED IN GOOD CONDITION.
 JV6266
 JV6266                          STATION RECOVERY (2020)
 JV6266
 JV6266'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2020 (DRD)
 JV6266'THE TELEPHONE POLE NOTED IN THE 1989 DESCRIPTION IS NOW DESIGNATED
 JV6266'BG+E 144425.  THE MARK IS 1.54 M (5.1 FT) SOUTH OF A CARSONITE WITNESS
 JV6266'POST AND 1.14 M (3.7 FT) EAST OF THE SUPPORT FOR A MAILBOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6303 ***********************************************************************
 JV6303  DESIGNATION -  AMOSS AZ MK
 JV6303  PID         -  JV6303
 JV6303  STATE/COUNTY-  MD/HARFORD
 JV6303  COUNTRY     -  US
 JV6303  USGS QUAD   -  NORRISVILLE (2016)
 JV6303
 JV6303                         *CURRENT SURVEY CONTROL
 JV6303  ______________________________________________________________________
 JV6303* NAD 83(2011) POSITION- 39 42 13.37584(N) 076 30 05.00989(W)   ADJUSTED
 JV6303* NAD 83(2011) ELLIP HT-   169.146 (meters)        (06/27/12)   ADJUSTED
 JV6303* NAD 83(2011) EPOCH   -  2010.00
 JV6303* NAVD 88 ORTHO HEIGHT -   201.688 (meters)      661.70  (feet) ADJUSTED
 JV6303  ______________________________________________________________________
 JV6303  GEOID HEIGHT    -        -32.519 (meters)                     GEOID18
 JV6303  NAD 83(2011) X  -  1,147,015.382 (meters)                     COMP
 JV6303  NAD 83(2011) Y  - -4,778,174.172 (meters)                     COMP
 JV6303  NAD 83(2011) Z  -  4,052,838.503 (meters)                     COMP
 JV6303  LAPLACE CORR    -         -3.18  (seconds)                    DEFLEC18
 JV6303  DYNAMIC HEIGHT  -        201.587 (meters)      661.37  (feet) COMP
 JV6303  MODELED GRAVITY -    980,120.6   (mgal)                       NAVD 88
 JV6303
 JV6303  VERT ORDER      -  FIRST     CLASS II
 JV6303
 JV6303  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6303  Standards:
 JV6303         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6303            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6303  -------------------------------------------------------------------
 JV6303  NETWORK    2.82   5.68           1.26   0.84   2.90      0.65842086
 JV6303  -------------------------------------------------------------------
 JV6303  Click here for local accuracies and other accuracy information.
 JV6303
 JV6303.The horizontal coordinates were established by GPS observations
 JV6303.and adjusted by the National Geodetic Survey in June 2012.
 JV6303
 JV6303.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6303.been affixed to the stable North American tectonic plate. See 
 JV6303.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6303
 JV6303.The horizontal coordinates are valid at the epoch date displayed above
 JV6303.which is a decimal equivalence of Year/Month/Day.
 JV6303
 JV6303.The orthometric height was determined by differential leveling and
 JV6303.adjusted by the NATIONAL GEODETIC SURVEY
 JV6303.in June 1991.
 JV6303
 JV6303.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6303.GEOID18 height accuracy estimate available here.
 JV6303
 JV6303.Click photographs - Photos may exist for this station.
 JV6303
 JV6303.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6303
 JV6303.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6303
 JV6303.The ellipsoidal height was determined by GPS observations
 JV6303.and is referenced to NAD 83.
 JV6303
 JV6303.The dynamic height is computed by dividing the NAVD 88
 JV6303.geopotential number by the normal gravity value computed on the
 JV6303.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6303.degrees latitude (g = 980.6199 gals.).
 JV6303
 JV6303.The modeled gravity was interpolated from observed gravity values.
 JV6303
 JV6303. The following values were computed from the NAD 83(2011) position.
 JV6303
 JV6303;                    North         East     Units Scale Factor Converg.
 JV6303;SPC MD       -   226,250.309   442,763.649   MT  1.00005424   +0 18 46.6
 JV6303;SPC MD       -   742,289.56  1,452,633.74   sFT  1.00005424   +0 18 46.6
 JV6303;SPC PA S     -    41,882.656   707,084.004   MT  1.00004384   +0 48 36.3
 JV6303;SPC PA S     -   137,410.01  2,319,824.77   sFT  1.00004384   +0 48 36.3
 JV6303;UTM  18      - 4,395,950.829   371,286.742   MT  0.99980397   -0 57 33.3
 JV6303
 JV6303!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6303!SPC MD       -   0.99997346  x   1.00005424  =   1.00002770
 JV6303!SPC PA S     -   0.99997346  x   1.00004384  =   1.00001730
 JV6303!UTM  18      -   0.99997346  x   0.99980397  =   0.99977744
 JV6303
 JV6303_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7128695950(NAD 83)
 JV6303
 JV6303|---------------------------------------------------------------------|
 JV6303| PID    Reference Object                     Distance      Geod. Az  |
 JV6303|                                                           dddmmss.s |
 JV6303| JV6266 AMOSS                               311.568 METERS 35020     |
 JV6303|---------------------------------------------------------------------|
 JV6303
 JV6303                          SUPERSEDED SURVEY CONTROL
 JV6303
 JV6303  NAD 83(2007)-  39 42 13.37612(N)    076 30 05.01056(W) AD(2002.00) 0
 JV6303  ELLIP H (02/10/07)  169.170  (m)                       GP(2002.00)    
 JV6303  ELLIP H (09/18/02)  169.219  (m)                       GP(       ) 4 2
 JV6303  NAD 83(1991)-  39 42 13.37613(N)    076 30 05.00948(W) AD(       ) 1
 JV6303  ELLIP H (01/27/92)  169.211  (m)                       GP(       ) 4 1
 JV6303  NAD 83(1986)-  39 42 13.36897(N)    076 30 05.01502(W) AD(       ) 1
 JV6303  NGVD 29             201.93   (m)          662.5    (f) LEVELING    3  
 JV6303
 JV6303.Superseded values are not recommended for survey control.
 JV6303
 JV6303.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6303.See file dsdata.pdf to determine how the superseded data were derived.
 JV6303
 JV6303_MARKER: DZ = AZIMUTH MARK DISK
 JV6303_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6303_STAMPING: 112 AMOSS 1989
 JV6303_MARK LOGO: MD-025
 JV6303_PROJECTION: FLUSH
 JV6303_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6303_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6303+STABILITY: SURFACE MOTION
 JV6303_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6303+SATELLITE: SATELLITE OBSERVATIONS - January 04, 1990
 JV6303
 JV6303  HISTORY     - Date     Condition        Report By
 JV6303  HISTORY     - 1989     MONUMENTED       RDA
 JV6303  HISTORY     - 19900104 GOOD
 JV6303  HISTORY     - 20090518 GOOD             MDSHA
 JV6303  HISTORY     - 20200609 GOOD             BASE9
 JV6303
 JV6303                          STATION DESCRIPTION
 JV6303
 JV6303'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6303'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6303'1.7 MILES EAST OF NORRISVILLE.  TO REACH THE STATION FROM THE
 JV6303'INTERSECTION OF STATE HIGHWAY 23 AND STATE HIGHWAY 136 PROCEED EAST
 JV6303'ALONG HIGHWAY 136 1.7 MILES TO ITS INTERSECTION WITH CAREA RAOD.
 JV6303'TURN LEFT AND PROCEED NORTH ALONG CAREA ROAD 0.2 MILES TO THE STATION
 JV6303'ON THE RIGHT.  TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED
 JV6303'SOUTH ALONG CAREA ROAD 0.2 MILES TO THE MARK ON THE RIGHT IN THE
 JV6303'SOUTHWEST CORNER OF THE INTERSECTION OF CAREA ROAD AND HIGHWAY 136.
 JV6303'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET IN CONCRETE
 JV6303'ABOUT 1 INCH BELOW GROUND STAMPED 112 AMOSS 1989.  THE MARK IS 28.0
 JV6303'FEET SOUTH OF THE CENTERLINE OF HIGHWAY 136, 32.0 FEET WEST OF THE
 JV6303'CENTERLINE OF CAREA ROAD, 24.0 FEET NORTHEAST OF AN 18 INCH WILD
 JV6303'CHERRY TREE.
 JV6303
 JV6303                          STATION RECOVERY (1990)
 JV6303
 JV6303'RECOVERED 1990
 JV6303'RECOVERED IN GOOD CONDITION.
 JV6303
 JV6303                          STATION RECOVERY (2009)
 JV6303
 JV6303'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (JMR)
 JV6303'RECOVERED IN GOOD CONDITION.
 JV6303
 JV6303                          STATION RECOVERY (2020)
 JV6303
 JV6303'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2020 (RSD)
 JV6303'THE MARK IS 2.79 M (9.2 FT) NORTH OF BG+E POLE 601093.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5166 ***********************************************************************
 JV5166  DESIGNATION -  AMOUR
 JV5166  PID         -  JV5166
 JV5166  STATE/COUNTY-  MD/QUEEN ANNES
 JV5166  COUNTRY     -  US
 JV5166  USGS QUAD   -  LOVE POINT (2017)
 JV5166
 JV5166                         *CURRENT SURVEY CONTROL
 JV5166  ______________________________________________________________________
 JV5166* NAD 83(1991) POSITION- 39 02 12.38383(N) 076 18 02.28873(W)   ADJUSTED
 JV5166* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5166  ______________________________________________________________________
 JV5166  GEOID HEIGHT    -        -33.487 (meters)                     GEOID18
 JV5166  LAPLACE CORR    -         -2.04  (seconds)                    DEFLEC18
 JV5166  HORZ ORDER      -  THIRD
 JV5166
 JV5166.The horizontal coordinates were established by classical geodetic methods
 JV5166.and adjusted by the National Geodetic Survey in January 1992.
 JV5166
 JV5166.The orthometric height was scaled from a topographic map.
 JV5166
 JV5166.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5166.GEOID18 height accuracy estimate available here.
 JV5166
 JV5166.Click photographs - Photos may exist for this station.
 JV5166
 JV5166.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5166
 JV5166. The following values were computed from the NAD 83(1991) position.
 JV5166
 JV5166;                    North         East     Units Scale Factor Converg.
 JV5166;SPC MD       -   152,320.367   460,548.646   MT  0.99995378   +0 26 20.2
 JV5166;SPC MD       -   499,737.74  1,510,983.35   sFT  0.99995378   +0 26 20.2
 JV5166;UTM  18      - 4,321,662.144   387,431.969   MT  0.99975603   -0 49 09.3
 JV5166
 JV5166!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5166!SPC MD       -   1.00000529  x   0.99995378  =   0.99995907
 JV5166!UTM  18      -   1.00000529  x   0.99975603  =   0.99976132
 JV5166
 JV5166:                Primary Azimuth Mark                     Grid Az
 JV5166:SPC MD       -  LOVE POINT LIGHTHOUSE                    033 15 54.7
 JV5166:UTM  18      -  LOVE POINT LIGHTHOUSE                    034 31 24.2
 JV5166
 JV5166_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8743121662(NAD 83)
 JV5166
 JV5166|---------------------------------------------------------------------|
 JV5166| PID    Reference Object                     Distance      Geod. Az  |
 JV5166|                                                           dddmmss.s |
 JV5166| JV5162 LOVE POINT LIGHTHOUSE               APPROX. 2.7 KM 0334214.9 |
 JV5166|---------------------------------------------------------------------|
 JV5166
 JV5166                          SUPERSEDED SURVEY CONTROL
 JV5166
 JV5166  NAD 83(1986)-  39 02 12.37906(N)    076 18 02.29998(W) AD(       ) 3
 JV5166  NAD 27      -  39 02 11.96900(N)    076 18 03.45800(W) AD(       ) 3
 JV5166  USSD        -  39 02 12.34200(N)    076 18 03.29500(W) AD(       ) 3
 JV5166
 JV5166.Superseded values are not recommended for survey control.
 JV5166
 JV5166.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5166.See file dsdata.pdf to determine how the superseded data were derived.
 JV5166
 JV5166_MARKER: Z = SEE DESCRIPTION
 JV5166_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5166_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5166+STABILITY: SURFACE MOTION
 JV5166
 JV5166  HISTORY     - Date     Condition        Report By
 JV5166  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5166  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5166
 JV5166                          STATION DESCRIPTION
 JV5166
 JV5166'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5166'STATION IS ON THE NE SHORE OF KENT ISLAND, W OF THE ENTRANCE TO
 JV5166'CHESTER RIVER, ABOUT 1/4 MILE SE OF LOVE POINT AND 3/8 MILE N OF
 JV5166'LOVE POINT LANDING, ON A SAND AND MARSH POINT, ABOUT 2 FEET ABOVE
 JV5166'HIGH WATER, 25 YARDS INSHORE, AND 55 YARDS N OF A FISHING SHACK.
 JV5166'
 JV5166'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5166'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5166'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5166'M.S.F.C. U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5166'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV5166'INCHES BELOW THE BASE OF THE MONUMENT.
 JV5166'
 JV5166'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5166'FOLLOWS--NAIL IN BLAZE IN 3-INCH CEDAR TREE, 12.46 METERS (40.9
 JV5166'FEET), S 28 DEG 25 MIN W.  NAIL IN BLAZE IN 4-INCH CEDAR TREE,
 JV5166'11.30 METERS (37.1 FEET), S 59 DEG 52 MIN W.  NAIL IN BLAZE IN
 JV5166'6-INCH CEDAR TREE, 38.88 METERS (127.6 FEET), N 31 DEG 16 MIN W.
 JV5166'W GABLE OF HOUSE ON EAST NECK, 3-3/4 MILES, N 81 DEG 42 MIN E.  N
 JV5166'GABLE OF BARN, 3-1/4 MILES, N 88 DEG 12 MIN E.  LEFT TANGENT OF
 JV5166'KENT ISLAND LANDING, 1-3/4 MILES, S 13 DEG 19 MIN E.  NE CORNER OF
 JV5166'FISHING SHACK, 57 YARDS, S 5 DEG 40 MIN E.
 JV5166
 JV5166                          STATION RECOVERY (1941)
 JV5166
 JV5166'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5166'THIS STATION WAS SEARCHED FOR BUT NOT FOUND.  THE MARSH HAS WASHED
 JV5166'CONSIDERABLY, AND NO TREES WERE FOUND.  DUE TO ITS EXPOSED
 JV5166'POSITION IT IS BELIEVED TO HAVE BEEN LOST.  RECOMMEND THAT
 JV5166'STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6194 ***********************************************************************
 DN6194  DESIGNATION -  AMPHITHEATER
 DN6194  PID         -  DN6194
 DN6194  STATE/COUNTY-  MD/CECIL
 DN6194  COUNTRY     -  US
 DN6194  USGS QUAD   -  NORTH EAST (2016)
 DN6194
 DN6194                         *CURRENT SURVEY CONTROL
 DN6194  ______________________________________________________________________
 DN6194* NAD 83(2011) POSITION- 39 30 43.48776(N) 075 57 07.55986(W)   ADJUSTED
 DN6194* NAD 83(2011) ELLIP HT-    25.023 (meters)        (06/27/12)   ADJUSTED
 DN6194* NAD 83(2011) EPOCH   -  2010.00
 DN6194* NAVD 88 ORTHO HEIGHT -    58.29  (meters)      191.2   (feet) LEVELING
 DN6194  ______________________________________________________________________
 DN6194  GEOID HEIGHT    -        -33.287 (meters)                     GEOID18
 DN6194  NAD 83(2011) X  -  1,196,035.743 (meters)                     COMP
 DN6194  NAD 83(2011) Y  - -4,780,009.758 (meters)                     COMP
 DN6194  NAD 83(2011) Z  -  4,036,354.235 (meters)                     COMP
 DN6194  LAPLACE CORR    -         -0.62  (seconds)                    DEFLEC18
 DN6194  VERT ORDER      -  THIRD ?
 DN6194
 DN6194  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6194  Standards:
 DN6194         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6194            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6194  -------------------------------------------------------------------
 DN6194  NETWORK    0.55   1.23           0.24   0.21   0.63      0.01514045
 DN6194  -------------------------------------------------------------------
 DN6194  Click here for local accuracies and other accuracy information.
 DN6194
 DN6194.The horizontal coordinates were established by GPS observations
 DN6194.and adjusted by the National Geodetic Survey in June 2012.
 DN6194
 DN6194.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6194.been affixed to the stable North American tectonic plate. See 
 DN6194.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6194
 DN6194.The horizontal coordinates are valid at the epoch date displayed above
 DN6194.which is a decimal equivalence of Year/Month/Day.
 DN6194
 DN6194.The orthometric height was determined by differential leveling.
 DN6194.The vertical network tie was performed by a horz. field party for horz.
 DN6194.obs reductions. Reset procedures were used to establish the elevation.
 DN6194
 DN6194.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6194.GEOID18 height accuracy estimate available here.
 DN6194
 DN6194.Click photographs - Photos may exist for this station.
 DN6194
 DN6194.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6194
 DN6194.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6194
 DN6194.The ellipsoidal height was determined by GPS observations
 DN6194.and is referenced to NAD 83.
 DN6194
 DN6194. The following values were computed from the NAD 83(2011) position.
 DN6194
 DN6194;                    North         East     Units Scale Factor Converg.
 DN6194;SPC MD       -   205,373.332   490,116.913   MT  1.00001145   +0 39 27.7
 DN6194;SPC MD       -   673,795.67  1,607,991.91   sFT  1.00001145   +0 39 27.7
 DN6194;UTM  18      - 4,374,037.838   418,152.831   MT  0.99968248   -0 36 20.9
 DN6194
 DN6194!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6194!SPC MD       -   0.99999607  x   1.00001145  =   1.00000752
 DN6194!UTM  18      -   0.99999607  x   0.99968248  =   0.99967856
 DN6194
 DN6194_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1815274037(NAD 83)
 DN6194
 DN6194                          SUPERSEDED SURVEY CONTROL
 DN6194
 DN6194  NAD 83(2007)-  39 30 43.48791(N)    075 57 07.56057(W) AD(2002.00) 1
 DN6194  ELLIP H (02/23/12)   25.060  (m)                       GP(2002.00) 4 1
 DN6194
 DN6194.Superseded values are not recommended for survey control.
 DN6194
 DN6194.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6194.See file dsdata.pdf to determine how the superseded data were derived.
 DN6194
 DN6194_MARKER: DD = SURVEY DISK
 DN6194_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6194_STAMPING: AMPHITHEATER 2008
 DN6194_MARK LOGO: MD-015
 DN6194_PROJECTION: FLUSH
 DN6194_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6194_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6194+STABILITY: SURFACE MOTION
 DN6194_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6194+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6194
 DN6194  HISTORY     - Date     Condition        Report By
 DN6194  HISTORY     - 20081204 MONUMENTED       GWS
 DN6194
 DN6194                          STATION DESCRIPTION
 DN6194
 DN6194'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6194'THE STATION IS LOCATED ON THE EAST SIDE OF TURKEY POINT ROAD (ROUTE
 DN6194'272) ABOUT 0.10 MI (0.2 KM) SOUTHWEST OF ELK NECK.
 DN6194'
 DN6194'TO REACH THE STATION FROM THE JUNCTION OF TURKEY POINT ROAD (ROUTE
 DN6194'272) AND OLD ELK NECK ROAD, PROCEED SOUTH ON TURKEY POINT ROAD FOR
 DN6194'0.05 MI (0.1 KM) TO THE STATION ON THE LEFT, OPPOSITE THE ENTRANCE TO
 DN6194'THE AMPHITHEATER.
 DN6194'
 DN6194'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6194'CONCRETE MONUMENT ON THE EAST SIDE OF TURKEY POINT ROAD OPPOSITE THE
 DN6194'ENTRANCE TO THE AMPHITHEATER, 8.7 FT (2.7 M) SOUTHEAST OF THE
 DN6194'SOUTHEAST SIDE OF THE ROAD, 96.6 FT (29.4 M) SOUTHWEST OF A UTILITY
 DN6194'POLE (CONECTIV 37187/34983) AND 111.4 FT (34.0 M) NORTHEAST OF A
 DN6194'UTILITY POLE (CONECTIV 37172/64971, CONCRETE POST 211 AND CONOWINGO
 DN6194'POWER CO.  16767).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2295 ***********************************************************************
 JV2295  DESIGNATION -  ANCH
 JV2295  PID         -  JV2295
 JV2295  STATE/COUNTY-  MD/MONTGOMERY
 JV2295  COUNTRY     -  US
 JV2295  USGS QUAD   -  GAITHERSBURG (2016)
 JV2295
 JV2295                         *CURRENT SURVEY CONTROL
 JV2295  ______________________________________________________________________
 JV2295* NAD 83(1993) POSITION- 39 08 12.39459(N) 077 12 39.80568(W)   ADJUSTED
 JV2295* NAVD 88 ORTHO HEIGHT -   141.540 (meters)      464.37  (feet) ADJUSTED
 JV2295  ______________________________________________________________________
 JV2295  GEOID HEIGHT    -        -31.741 (meters)                     GEOID18
 JV2295  LAPLACE CORR    -          1.29  (seconds)                    DEFLEC18
 JV2295  DYNAMIC HEIGHT  -        141.466 (meters)      464.13  (feet) COMP
 JV2295  MODELED GRAVITY -    980,100.2   (mgal)                       NAVD 88
 JV2295
 JV2295  HORZ ORDER      -  SECOND
 JV2295  VERT ORDER      -  FIRST     CLASS II
 JV2295
 JV2295.The horizontal coordinates were established by classical geodetic methods
 JV2295.and adjusted by the National Geodetic Survey in November 1994.
 JV2295
 JV2295.The orthometric height was determined by differential leveling and
 JV2295.adjusted by the NATIONAL GEODETIC SURVEY
 JV2295.in June 1991.
 JV2295
 JV2295.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2295.GEOID18 height accuracy estimate available here.
 JV2295
 JV2295.Click photographs - Photos may exist for this station.
 JV2295
 JV2295.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2295
 JV2295.The dynamic height is computed by dividing the NAVD 88
 JV2295.geopotential number by the normal gravity value computed on the
 JV2295.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2295.degrees latitude (g = 980.6199 gals.).
 JV2295
 JV2295.The modeled gravity was interpolated from observed gravity values.
 JV2295
 JV2295. The following values were computed from the NAD 83(1993) position.
 JV2295
 JV2295;                    North         East     Units Scale Factor Converg.
 JV2295;SPC MD       -   163,211.092   381,752.875   MT  0.99996019   -0 07 56.9
 JV2295;SPC MD       -   535,468.39  1,252,467.56   sFT  0.99996019   -0 07 56.9
 JV2295;UTM  18      - 4,334,282.937   308,900.099   MT  1.00004968   -1 23 45.5
 JV2295
 JV2295!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2295!SPC MD       -   0.99998277  x   0.99996019  =   0.99994296
 JV2295!UTM  18      -   0.99998277  x   1.00004968  =   1.00003245
 JV2295
 JV2295:                Primary Azimuth Mark                     Grid Az
 JV2295:SPC MD       -  GAIT                                     343 38 12.6
 JV2295:UTM  18      -  GAIT                                     344 54 01.2
 JV2295
 JV2295_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0890034282(NAD 83)
 JV2295
 JV2295|---------------------------------------------------------------------|
 JV2295| PID    Reference Object                     Distance      Geod. Az  |
 JV2295|                                                           dddmmss.s |
 JV2295| JV4370 GAITHERSBURG WASHINGTONIAN TK       APPROX. 3.2 KM 1504654.5 |
 JV2295| JV2294 ANCH RM 1                             9.385 METERS 15425     |
 JV2295| JV2192 NBS                                 272.381 METERS 23419     |
 JV2295| JV2296 ANCH RM 2                             8.745 METERS 24745     |
 JV2295| JV2293 GAIT                                APPROX. 1.1 KM 3433015.7 |
 JV2295|---------------------------------------------------------------------|
 JV2295
 JV2295                          SUPERSEDED SURVEY CONTROL
 JV2295
 JV2295  NAD 83(1991)-  39 08 12.39418(N)    077 12 39.80605(W) AD(       ) 2
 JV2295  NAD 83(1986)-  39 08 12.39404(N)    077 12 39.81606(W) AD(       ) 2
 JV2295  NAD 27      -  39 08 12.00697(N)    077 12 40.87618(W) AD(       ) 2
 JV2295  NGVD 29             141.75   (m)          465.1    (f) LEVELING    3  
 JV2295  NGVD 29 (11/26/84)  141.751  (m)          465.06   (f) ADJUSTED    1 2
 JV2295
 JV2295.Superseded values are not recommended for survey control.
 JV2295
 JV2295.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2295.See file dsdata.pdf to determine how the superseded data were derived.
 JV2295
 JV2295_MARKER: DS = TRIANGULATION STATION DISK
 JV2295_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2295_STAMPING: ANCH 1958
 JV2295_MARK LOGO: CGS
 JV2295_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2295+STABILITY: SURFACE MOTION
 JV2295
 JV2295  HISTORY     - Date     Condition        Report By
 JV2295  HISTORY     - 1958     MONUMENTED       CGS
 JV2295  HISTORY     - 1958     GOOD             CGS
 JV2295  HISTORY     - 1963     GOOD             CGS
 JV2295  HISTORY     - 1966     GOOD             CGS
 JV2295  HISTORY     - 1966     GOOD             CGS
 JV2295
 JV2295                          STATION DESCRIPTION
 JV2295
 JV2295'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2295'STATION IS LOCATED ON TOP OF A SMALL CUT EMBANKMENT ALONG SOUTHWEST
 JV2295'RIGHT OF WAY OF U.S. HIGHWAY NO. 240 ABOUT 0.8 MILE SOUTHWEST OF THE
 JV2295'CENTER OF GAITHERSBURG, AND ABOUT 0.25 MILE SOUTHEAST OF OVERPASS
 JV2295'WHERE STATE HIGHWAY NO. 117 PASSES OVER U.S. HIGHWAY NO. 240.
 JV2295'STATION IS 53 FEET WEST OF THE APPROXIMATE CENTERLINE OF SOUTH BOUND
 JV2295'TRAFFIC LANE OF U.S. HIGHWAY NO. 40.  THE MARK IS SET FLUSH AND THE
 JV2295'DISK IS STAMPED ANCH 1958.
 JV2295'
 JV2295'REFERENCE MARK NO. 1 IS 52 FEET WEST OF APPROXIMATE CENTERLINE OF
 JV2295'SOUTH BOUND TRAFFIC LANE OF U.S. HIGHWAY NO. 240.  THE MARK IS SET
 JV2295'FLUSH AND THE DISK IS STAMPED ANCH NO 1 1958.
 JV2295'
 JV2295'REFERENCE MARK NO. 2 IS 4 FEET EAST OF EAST EDGE OF CULTIVATED
 JV2295'FIELD.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED ANCH NO 2
 JV2295'1958.
 JV2295'
 JV2295'STATION GAIT IS VISIBLE FROM GROUND AND MAY BE USED AS AZIMUTH MARK.
 JV2295'
 JV2295'TO REACH FROM THE POST OFFICE IN GAITHERSBURG, GO WEST FOR 0.2 MILE
 JV2295'TO NORTH SIDE OF CONCRETE OVERPASS.  KEEP RIGHT AND GO 0.05 MILE TO
 JV2295'STATE HIGHWAYS NO. 355 AND 124.  CONTINUE NORTHWESTERLY ON STATE
 JV2295'HIGHWAYS NO. 355 AND 124 FOR 0.25 MILE TO WHERE STATE HIGHWAY NO.
 JV2295'124 TURNS LEFT.  CONTINUE NORTHWESTERLY ON FREDERICK AVENUE FOR 0.75
 JV2295'MILE.  KEEP LEFT ON BROWNS STATION ROAD AND GO 0.25 MILE TO
 JV2295'OVERPASS AT U.S. HIGHWAY NO. 240.  CROSS OVERPASS AND KEEP RIGHT ON
 JV2295'INTERCHANGE RAMP AND GO SOUTHEASTERLY ON U.S. HIGHWAY NO.
 JV2295'240 FOR 0.2 MILE TO RAILROAD OVERPASS.  CONTINUE SOUTHEASTERLY
 JV2295'ON U.S.  HIGHWAY NO. 240 FOR 0.6 MILE TO STATION ON RIGHT
 JV2295'(SOUTHWEST) SIDE OF HIGHWAY AS DESCRIBED.  NO AZIMUTH MARK SET.
 JV2295'
 JV2295'HEIGHT OF LIGHT ABOVE STATION MARK 1 METERS.
 JV2295
 JV2295                          STATION RECOVERY (1958)
 JV2295
 JV2295'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2295'1.7 MI SW FROM GAITHERSBURG.
 JV2295'ABOUT 1.1 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2295'FROM THE OLD U.S. HIGHWAY 240 OVERPASS OVER THE BALTIMORE AND
 JV2295'OHIO RAILROAD AT GAITHERSBURG, THENCE 0.6 MILE SOUTHEAST ALONG
 JV2295'U.S. HIGHWAY 240, ON THE TOP OF A CUT, ABOUT 0.25 MILE SOUTHEAST
 JV2295'OF THE INTERSECTION OF STATE HIGHWAY 124 AND U.S. HIGHWAY 240,
 JV2295'52.6 FEET WEST OF THE CENTER LINE OF THE SOUTH BOUND LANE, 6 FEET
 JV2295'WEST OF THE TOP OF THE CUT BANK, 1 FOOT EAST OF A METAL WITNESS
 JV2295'POST, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND AND
 JV2295'ABOUT 10 FEET ABOVE THE LEVEL OF THE HIGHWAY.  NOTE-- THIS MARK
 JV2295'WILL BE DESTROYED AT A LATER DATE BECAUSE OF CONSTRUCTION IN THE
 JV2295'AREA.
 JV2295
 JV2295                          STATION RECOVERY (1963)
 JV2295
 JV2295'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (JAN)
 JV2295'THE DISTANCE TO ANCH RM 1 IS 30.81 FEET, 9.391 METERS, AND TO
 JV2295'ANCH RM 2 IS 28.70 FEET, 8.749 METERS.
 JV2295'
 JV2295'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED AND FOUND
 JV2295'IN GOOD CONDITION.  THE STATION WAS NOT OCCUPIED AT THIS TIME.  THE
 JV2295'TAPED DISTANCES TO THE REFERENCE MARKS WERE RE-MEASURED AND A
 JV2295'SHORTER DISTANCE WAS NOTED TO BOTH THE REFERENCE MARKS.  THE 1963
 JV2295'AND PREVIOUS DISTANCES ARE SHOWN BELOW.  THE PREVIOUS
 JV2295'DESCRIPTION IS ADEQUATE FOR RECOVERY.  IT IS NOTED IN THE 1958
 JV2295'DESCRIPTION HIGHWAY 40 IS MENTIONED AND IT SHOULD READ HIGHWAY
 JV2295'240, WHICH NOW IS ALSO INTERSTATE HIGHWAY 705.
 JV2295
 JV2295                          STATION RECOVERY (1966)
 JV2295
 JV2295'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV2295'THE STATION WAS RECOVERED AND ALL MARK WERE FOUND IN GOOD CONDITION.
 JV2295'THE 1958 DESCRIPTION IS ADEQUATE.  THE STATION WAS DESTROYED AND
 JV2295'RELOCATED ON TRIANGULATION STATION NBS.  MR B.K. MEADE OF THE
 JV2295'ROCKVILLE OFFICE WAS CONTACTED AND APPROVED THIS METHOD.
 JV2295
 JV2295                          STATION RECOVERY (1966)
 JV2295
 JV2295'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV2295'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2294 ***********************************************************************
 JV2294  DESIGNATION -  ANCH RM 1
 JV2294  PID         -  JV2294
 JV2294  STATE/COUNTY-  MD/MONTGOMERY
 JV2294  COUNTRY     -  US
 JV2294  USGS QUAD   -  GAITHERSBURG (2016)
 JV2294
 JV2294                         *CURRENT SURVEY CONTROL
 JV2294  ______________________________________________________________________
 JV2294* NAD 83(1986) POSITION- 39 08 12.12   (N) 077 12 39.64   (W)   HD_HELD1
 JV2294* NAVD 88 ORTHO HEIGHT -   141.510 (meters)      464.27  (feet) ADJUSTED
 JV2294  ______________________________________________________________________
 JV2294  GEOID HEIGHT    -        -31.741 (meters)                     GEOID18
 JV2294  DYNAMIC HEIGHT  -        141.435 (meters)      464.02  (feet) COMP
 JV2294  MODELED GRAVITY -    980,100.2   (mgal)                       NAVD 88
 JV2294
 JV2294  VERT ORDER      -  FIRST     CLASS II
 JV2294
 JV2294.The horizontal coordinates were determined by differentially corrected
 JV2294.hand held GPS observations or other comparable positioning techniques
 JV2294.and have an estimated accuracy of +/- 3 meters.
 JV2294
 JV2294.The orthometric height was determined by differential leveling and
 JV2294.adjusted by the NATIONAL GEODETIC SURVEY
 JV2294.in June 1991.
 JV2294
 JV2294.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2294.GEOID18 height accuracy estimate available here.
 JV2294
 JV2294.Click photographs - Photos may exist for this station.
 JV2294
 JV2294.The dynamic height is computed by dividing the NAVD 88
 JV2294.geopotential number by the normal gravity value computed on the
 JV2294.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2294.degrees latitude (g = 980.6199 gals.).
 JV2294
 JV2294.The modeled gravity was interpolated from observed gravity values.
 JV2294
 JV2294;                    North         East    Units  Estimated Accuracy
 JV2294;SPC MD       -   163,202.6     381,756.8     MT  (+/- 3 meters HH1 GPS) 
 JV2294
 JV2294_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0890334274(NAD 83)
 JV2294
 JV2294                          SUPERSEDED SURVEY CONTROL
 JV2294
 JV2294  NGVD 29 (11/26/84)  141.720  (m)          464.96   (f) ADJUSTED    1 2
 JV2294
 JV2294.Superseded values are not recommended for survey control.
 JV2294
 JV2294.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2294.See file dsdata.pdf to determine how the superseded data were derived.
 JV2294
 JV2294_MARKER: DR = REFERENCE MARK DISK
 JV2294_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2294_STAMPING: ANCH NO 1 1958
 JV2294_MARK LOGO: CGS
 JV2294_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2294+STABILITY: SURFACE MOTION
 JV2294
 JV2294  HISTORY     - Date     Condition        Report By
 JV2294  HISTORY     - 1958     MONUMENTED       CGS
 JV2294  HISTORY     - 1966     GOOD             CGS
 JV2294
 JV2294                          STATION DESCRIPTION
 JV2294
 JV2294'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2294'1.7 MI SW FROM GAITHERSBURG.
 JV2294'ABOUT 1.1 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2294'FROM THE OLD U.S. HIGHWAY 240 OVERPASS OVER THE RAILROAD AT
 JV2294'GAITHERSBURG, THENCE 0.6 MILE SOUTHEAST ALONG U.S. HIGHWAY 240,
 JV2294'ON THE TOP OF A CUT, ABOUT 0.25 MILE SOUTHEAST OF THE CROSSING OF
 JV2294'STATE HIGHWAY 124, 30.9 FEET SOUTH OF THE STATION, 52 FEET WEST
 JV2294'OF THE CENTER LINE OF THE SOUTH BOUND LANE, SET IN THE TOP OF A
 JV2294'CONCRETE POST FLUSH WITH THE GROUND.  NOTE-- 1966 REPORT THIS
 JV2294'MARK WILL BE DESTROYED AT A LATER DATE BECAUSE OF CONSTRUCTION
 JV2294'IN THE AREA.
 JV2294
 JV2294                          STATION RECOVERY (1966)
 JV2294
 JV2294'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV2294'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2296 ***********************************************************************
 JV2296  DESIGNATION -  ANCH RM 2
 JV2296  PID         -  JV2296
 JV2296  STATE/COUNTY-  MD/MONTGOMERY
 JV2296  COUNTRY     -  US
 JV2296  USGS QUAD   -  GAITHERSBURG (2016)
 JV2296
 JV2296                         *CURRENT SURVEY CONTROL
 JV2296  ______________________________________________________________________
 JV2296* NAD 83(1986) POSITION- 39 08 12.29   (N) 077 12 40.14   (W)   HD_HELD1
 JV2296* NAVD 88 ORTHO HEIGHT -   141.231 (meters)      463.36  (feet) ADJUSTED
 JV2296  ______________________________________________________________________
 JV2296  GEOID HEIGHT    -        -31.741 (meters)                     GEOID18
 JV2296  DYNAMIC HEIGHT  -        141.157 (meters)      463.11  (feet) COMP
 JV2296  MODELED GRAVITY -    980,100.2   (mgal)                       NAVD 88
 JV2296
 JV2296  VERT ORDER      -  FIRST     CLASS II
 JV2296
 JV2296.The horizontal coordinates were determined by differentially corrected
 JV2296.hand held GPS observations or other comparable positioning techniques
 JV2296.and have an estimated accuracy of +/- 3 meters.
 JV2296
 JV2296.The orthometric height was determined by differential leveling and
 JV2296.adjusted by the NATIONAL GEODETIC SURVEY
 JV2296.in June 1991.
 JV2296
 JV2296.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2296.GEOID18 height accuracy estimate available here.
 JV2296
 JV2296.Click photographs - Photos may exist for this station.
 JV2296
 JV2296.The dynamic height is computed by dividing the NAVD 88
 JV2296.geopotential number by the normal gravity value computed on the
 JV2296.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2296.degrees latitude (g = 980.6199 gals.).
 JV2296
 JV2296.The modeled gravity was interpolated from observed gravity values.
 JV2296
 JV2296;                    North         East    Units  Estimated Accuracy
 JV2296;SPC MD       -   163,207.9     381,744.8     MT  (+/- 3 meters HH1 GPS) 
 JV2296
 JV2296_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0889134279(NAD 83)
 JV2296
 JV2296                          SUPERSEDED SURVEY CONTROL
 JV2296
 JV2296  NGVD 29 (11/26/84)  141.441  (m)          464.04   (f) ADJUSTED    1 2
 JV2296
 JV2296.Superseded values are not recommended for survey control.
 JV2296
 JV2296.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2296.See file dsdata.pdf to determine how the superseded data were derived.
 JV2296
 JV2296_MARKER: DR = REFERENCE MARK DISK
 JV2296_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2296_STAMPING: ANCH NO 2 1958
 JV2296_MARK LOGO: CGS
 JV2296_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2296+STABILITY: SURFACE MOTION
 JV2296
 JV2296  HISTORY     - Date     Condition        Report By
 JV2296  HISTORY     - 1958     MONUMENTED       CGS
 JV2296  HISTORY     - 1966     GOOD             CGS
 JV2296
 JV2296                          STATION DESCRIPTION
 JV2296
 JV2296'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2296'1.7 MI SW FROM GAITHERSBURG.
 JV2296'ABOUT 1.1 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2296'FROM THE OLD U.S. HIGHWAY OVERPASS OVER THE RAILROAD AT
 JV2296'GAITHERSBURG, THENCE 0.6 MILE SOUTHEAST ALONG U.S. HIGHWAY 240,
 JV2296'ON THE TOP OF A CUT, ABOUT 0.25 MILE SOUTHEAST OF THE INTERSECTION OF
 JV2296'U.S. HIGHWAY 240 AND STATE HIGHWAY 124, 28.8 FEET WEST OF THE
 JV2296'STATION, ABOUT 82 FEET WEST OF THE CENTER LINE OF THE SOUTH BOUND
 JV2296'LANE AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV2296'NOTE-- THIS MARK WILL BE DESTROYED AT A LATER DATE BECAUSE OF
 JV2296'CONSTRUCTION IN THE AREA.
 JV2296
 JV2296                          STATION RECOVERY (1966)
 JV2296
 JV2296'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV2296'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4914 ***********************************************************************
 JV4914  DESIGNATION -  ANDELOT
 JV4914  PID         -  JV4914
 JV4914  STATE/COUNTY-  MD/KENT
 JV4914  COUNTRY     -  US
 JV4914  USGS QUAD   -  HANESVILLE (2016)
 JV4914
 JV4914                         *CURRENT SURVEY CONTROL
 JV4914  ______________________________________________________________________
 JV4914* NAD 83(1991) POSITION- 39 19 08.16654(N) 076 11 07.66635(W)   ADJUSTED
 JV4914* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV4914  ______________________________________________________________________
 JV4914  GEOID HEIGHT    -        -33.279 (meters)                     GEOID18
 JV4914  LAPLACE CORR    -         -1.02  (seconds)                    DEFLEC18
 JV4914  HORZ ORDER      -  FIRST
 JV4914
 JV4914.The horizontal coordinates were established by classical geodetic methods
 JV4914.and adjusted by the National Geodetic Survey in January 1992.
 JV4914
 JV4914.The orthometric height was scaled from a topographic map.
 JV4914
 JV4914.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4914.GEOID18 height accuracy estimate available here.
 JV4914
 JV4914.Click photographs - Photos may exist for this station.
 JV4914
 JV4914.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4914
 JV4914. The following values were computed from the NAD 83(1991) position.
 JV4914
 JV4914;                    North         East     Units Scale Factor Converg.
 JV4914;SPC MD       -   183,725.988   470,240.197   MT  0.99997970   +0 30 40.4
 JV4914;SPC MD       -   602,774.35  1,542,779.71   sFT  0.99997970   +0 30 40.4
 JV4914;UTM  18      - 4,352,840.045   397,809.671   MT  0.99972858   -0 45 04.4
 JV4914
 JV4914!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4914!SPC MD       -   1.00000400  x   0.99997970  =   0.99998370
 JV4914!UTM  18      -   1.00000400  x   0.99972858  =   0.99973258
 JV4914
 JV4914:                Primary Azimuth Mark                     Grid Az
 JV4914:SPC MD       -  CLOUGH RESET                             181 27 33.0
 JV4914:UTM  18      -  CLOUGH RESET                             182 43 17.8
 JV4914
 JV4914_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9780952840(NAD 83)
 JV4914
 JV4914|---------------------------------------------------------------------|
 JV4914| PID    Reference Object                     Distance      Geod. Az  |
 JV4914|                                                           dddmmss.s |
 JV4914| CA9882 ANDELOT RM 1                         39.411 METERS 02014     |
 JV4914| CA9881 ANDELOT RM                          109.200 METERS 12457     |
 JV4914| CA9883 ANDELOT RM 2                         30.623 METERS 13005     |
 JV4914| CA9884 ANDELOT RM 3                                       1363744.8 |
 JV4914| JV5107 CLOUGH RESET                        APPROX.13.0 KM 1815813.4 |
 JV4914| JV5383 AIRWAY BEACON 60                    APPROX.18.4 KM 2723308.9 |
 JV4914| JV5306 AIRWAY BEACON 61 A                  APPROX.12.3 KM 3105559.3 |
 JV4914| JV4915 H TOWER                             APPROX. 6.9 KM 3135059.6 |
 JV4914| JV5304 AIRWAY BEACON 61 B                  APPROX.10.8 KM 3195213.4 |
 JV4914|---------------------------------------------------------------------|
 JV4914
 JV4914                          SUPERSEDED SURVEY CONTROL
 JV4914
 JV4914  NAD 83(1986)-  39 19 08.15978(N)    076 11 07.67404(W) AD(       ) 1
 JV4914  NAD 27      -  39 19 07.77000(N)    076 11 08.84500(W) AD(       ) 1
 JV4914
 JV4914.Superseded values are not recommended for survey control.
 JV4914
 JV4914.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4914.See file dsdata.pdf to determine how the superseded data were derived.
 JV4914
 JV4914_MARKER: DS = TRIANGULATION STATION DISK
 JV4914_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4914_STAMPING: ANDELOT 1933
 JV4914_MARK LOGO: CGS
 JV4914_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4914+STABILITY: SURFACE MOTION
 JV4914
 JV4914  HISTORY     - Date     Condition        Report By
 JV4914  HISTORY     - 1933     MONUMENTED       CGS
 JV4914  HISTORY     - 1935     GOOD             CGS
 JV4914  HISTORY     - 1937     GOOD             CGS
 JV4914  HISTORY     - 1939     GOOD             CGS
 JV4914  HISTORY     - 1961     GOOD             CGS
 JV4914  HISTORY     - 1974     GOOD             MDDNR
 JV4914  HISTORY     - 1989     GOOD             MDDNR
 JV4914
 JV4914                          STATION DESCRIPTION
 JV4914
 JV4914'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV4914'STATION IS LOCATED JUST W OF THE ARMY LOOKOUT TOWER NO.8.  STATION
 JV4914'IS 70 FEET E OF THE EDGE OF THE BLUFF AND 100 FEET W OF THE ARMY
 JV4914'TOWER.  AN OLD C. AND G.S. TRIANGULATION STATION MARK WAS FOUND
 JV4914'BUT WAS NOT STAMPED.  DISTANCE 109.20 FEET, (UNDER ARMY TOWER).
 JV4914'
 JV4914'SURFACE, UNDERGROUND, AND REFERENCE MARKS NO.1 AND NO.3
 JV4914'(AZIMUTH MARK) ARE STANDARD BRONZE DISKS, SET IN CONCRETE.
 JV4914'REFERENCE MARK NO.2 IS A
 JV4914'STANDARD BRONZE DISK.
 JV4914'
 JV4914'REFERENCE MARK NO.1 IS 129.30 FEET N OF THE STATION, 40 FEET
 JV4914'E OF THE EDGE OF THE BLUFF AT THE W EDGE OF THE FIELD, 64 PACES
 JV4914'NW OF THE STEPS TO THE ARMY TOWER.
 JV4914'
 JV4914'REFERENCE MARK NO.2 IS 100.55 FEET E OF THE STATION SET IN
 JV4914'THE W CORNER OF THE W FOOTING OF THE ARMY TOWER.
 JV4914'
 JV4914'REFERENCE MARK NO.3 IS 375 YARDS SSE OF THE STATION ON AN OLD
 JV4914'FENCE LINE RUNNING NE AND SW 5 PACES N OF THREE DOGWOOD TREES IN
 JV4914'BRUSH IN THE S EDGE OF THE FIELD.  MARK IS VISIBLE FROM THE
 JV4914'GROUND AT THE STATION.
 JV4914'
 JV4914'TO REACH IT, LEAVE HIGHWAY 213 AT HOPEWELLS CORNER AT SIGN 3.0
 JV4914'MILES TO WORTON, 2.2 MILES N OF CHESTERTOWN.  GO W THROUGH
 JV4914'WORTON TO BUTLERTOWN, TURN RIGHT GO 75 YARDS AND TURN LEFT ON
 JV4914'GRAVEL ROAD.  GO W ON THIS ROAD 5.1 MILES FOLLOWING ARROW ANDELOT
 JV4914'STOCK FARM TO A POINT WHERE THE ROAD TURNS RIGHT, CONTINUE 0.3
 JV4914'MILE STRAIGHT AHEAD ON DIM ROAD, SAND, AND TURN LEFT THROUGH
 JV4914'FIELD TO CEMENT TO SIGN AND AN OLD WATER PUMP.  AT THIS POINT
 JV4914'TAKE THE ROAD THROUGH THE FIELD ON THE E SIDE OF THE FENCE LINE,
 JV4914'CONTINUE TO THE TOWER WHICH IS VISIBLE FROM THE POINT WHERE TURN
 JV4914'INTO THE FIELD WAS MADE.  THE TOTAL DISTANCE TO THE STATION IS
 JV4914'1.1 MILES.
 JV4914'
 JV4914'HEIGHT OF LIGHT ABOVE STATION MARK 36 METERS.
 JV4914
 JV4914                          STATION RECOVERY (1935)
 JV4914
 JV4914'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (JCP)
 JV4914'THE ORIGINAL DESCRIPTION FOR THIS STATION IS ADEQUATE.  STATION
 JV4914'AND REFERENCE MARKS ARE IN GOOD CONDITION.  A 45-FOOT TOWER WAS
 JV4914'BUILT OVER THIS STATION.
 JV4914
 JV4914                          STATION RECOVERY (1937)
 JV4914
 JV4914'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JV4914'RECOVERED AS DESCRIBED IN GOOD CONDITION.  THE PRESENT DESCRIPTION
 JV4914'IS ADEQUATE.
 JV4914'
 JV4914'THE U.S. ENGINEERS ESTABLISHED AN ECCENTRIC POINT ON THE ARMY
 JV4914'LOOKOUT TOWER NO.8.  THE ECCENTRIC POINT WAS CONNECTED TO ANDELOT
 JV4914'BY A DIRECTION AND DISTANCE.
 JV4914
 JV4914                          STATION RECOVERY (1939)
 JV4914
 JV4914'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4914'STATION WAS RECOVERED IN GOOD CONDITION.  STATION IS ON THE BLUFF
 JV4914'AT WORTON POINT ON THE E SIDE OF CHESAPEAKE BAY, 5 MILES SW OF
 JV4914'HOWELL POINT.
 JV4914'
 JV4914'STATION MARK IS 20 METERS E OF THE EDGE OF THE BLUFF AND 33
 JV4914'METERS W OF THE ARMY OBSERVATION TOWER ON WORTON POINT.  IT IS IN
 JV4914'A GRASS AND SMALL PINE COVERED FIELD.
 JV4914'
 JV4914'STATION MARK IS A STANDARD BRONZE DISK ATOP A 12-INCH CONCRETE
 JV4914'CYLINDER PROJECTING 2 INCHES ABOVE THE SURFACE OF THE GROUND.
 JV4914'
 JV4914'REFERENCE MARK NO.1 IS 39.41 METERS N OF THE STATION, 12
 JV4914'METERS E OF THE EDGE OF THE BLUFF AND APPROXIMATELY 60 METERS NW
 JV4914'OF THE CENTER OF THE OBSERVATION TOWER.
 JV4914'
 JV4914'REFERENCE MARK NO.2 IS 30.65 METERS E OF THE STATION AND IS
 JV4914'SET IN THE W CORNER OF THE W FOOTING OF THE OBSERVATION TOWER.
 JV4914'
 JV4914'REFERENCE MARK NO.3 WAS NOT VISITED.
 JV4914'
 JV4914'TO REACH THE STATION FROM LYNCH, MARYLAND, FOLLOW 9-FOOT CONCRETE
 JV4914'ROAD W FROM LYNCH FOR 1.9 MILES.  TURN RIGHT AND FOLLOW ROAD FOR
 JV4914'3.8 MILES TO BEGINNING OF MACADAM.  CONTINUE ON MACADAM FOR 1.9
 JV4914'MILES TO POINT AT WHICH MACADAM ROAD TURNS RIGHT.  LEAVE THIS
 JV4914'MACADAM AT THIS POINT.  FOLLOW FIELD ROAD ALONG NE SIDE OF FIELD
 JV4914'TO FENCE.  TURN LEFT ONTO TRAIL RUNNING ALONG S SIDE OF
 JV4914'FENCE.  FOLLOW TRAIL THROUGH THE PLOWED BARNYARD TO THE ARMY
 JV4914'OBSERVATION TOWER AND THE STATION.  THE TOTAL DISTANCE OF THE
 JV4914'STATION FROM THE POINT AT WHICH THE MACADAM WAS LEFT IS 1.5
 JV4914'MILES.
 JV4914
 JV4914                          STATION RECOVERY (1961)
 JV4914
 JV4914'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV4914'STATION MARK AND REFERENCE MARKS NO.1 AND NO.2 RECOVERED IN GOOD
 JV4914'CONDITION.  REFERENCE MARK NO.3 COULD NOT BE FOUND.  THE
 JV4914'PUBLISHED DESCRIPTION IS ADEQUATE.
 JV4914
 JV4914                          STATION RECOVERY (1974)
 JV4914
 JV4914'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 JV4914'ANDELOT 1933 GOOD
 JV4914'
 JV4914'ANDELOT NO2 1933 GOOD
 JV4914'
 JV4914'ANDELOT NO1 1933 GOOD
 JV4914'
 JV4914'STA. AND RMS 1 AND 2 RECOVD AS DESCRIBED WITH ADDS.  STA. IS
 JV4914'93 FT W OF GATE IN FENCE THAT SURROUNDS TOWER AND 85 FT E OF
 JV4914'EDGE OF BANK.  WITNESS POST AND SIGN PLACED 3 FT WEST OF STA. RM 1
 JV4914'IS NOW 22 FT N OF EDGE OF WOODS 6 FT NE OF LARGE TULIP POPLAR
 JV4914'TREE RM 2 IS ON LEG BASE OF OLD TOWER LOCATION.  RM 3 NOT
 JV4914'SEARCHED FOR.  STA. PROJECTS 1 IN RM 1 PROJECTS 3 IN
 JV4914
 JV4914                          STATION RECOVERY (1989)
 JV4914
 JV4914'RECOVERY NOTE BY MD DEPT OF NAT RES 1989 (LW)
 JV4914'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7075 ***********************************************************************
 JV7075  CBN         -  This is a Cooperative Base Network Control Station.
 JV7075  DESIGNATION -  ANDERSON
 JV7075  PID         -  JV7075
 JV7075  STATE/COUNTY-  MD/MONTGOMERY
 JV7075  COUNTRY     -  US
 JV7075  USGS QUAD   -  SENECA (2016)
 JV7075
 JV7075                         *CURRENT SURVEY CONTROL
 JV7075  ______________________________________________________________________
 JV7075* NAD 83(2011) POSITION- 39 06 49.67269(N) 077 16 02.17546(W)   NO CHECK
 JV7075* NAD 83(2011) ELLIP HT-    93.721 (meters)        (06/27/12)   NO CHECK
 JV7075* NAD 83(2011) EPOCH   -  2010.00
 JV7075* NAVD 88 ORTHO HEIGHT -   125.5   (meters)      412.    (feet) GPS OBS
 JV7075  ______________________________________________________________________
 JV7075  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7075  GEOID HEIGHT    -        -32.150 (meters)                     GEOID93
 JV7075  GEOID HEIGHT    -        -31.773 (meters)                     GEOID18
 JV7075  NAD 83(2011) X  -  1,092,195.896 (meters)                     COMP
 JV7075  NAD 83(2011) Y  - -4,833,579.617 (meters)                     COMP
 JV7075  NAD 83(2011) Z  -  4,002,186.288 (meters)                     COMP
 JV7075  LAPLACE CORR    -          2.50  (seconds)                    DEFLEC18
 JV7075
 JV7075  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7075  Standards:
 JV7075         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7075            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7075  -------------------------------------------------------------------
 JV7075  NETWORK    1.28   9.45           0.56   0.48   4.82      0.04208154
 JV7075  -------------------------------------------------------------------
 JV7075  Click here for local accuracies and other accuracy information.
 JV7075
 JV7075.The horizontal coordinates were established by GPS observations
 JV7075.and adjusted by the National Geodetic Survey in June 2012.
 JV7075
 JV7075.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7075.been affixed to the stable North American tectonic plate. See 
 JV7075.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7075
 JV7075.The horizontal coordinates are valid at the epoch date displayed above
 JV7075.which is a decimal equivalence of Year/Month/Day.
 JV7075
 JV7075.No horizontal observational check was made to the station.
 JV7075
 JV7075.The orthometric height was determined by GPS observations and a
 JV7075.high-resolution geoid model.
 JV7075
 JV7075.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7075.GEOID18 height accuracy estimate available here.
 JV7075
 JV7075.Click photographs - Photos may exist for this station.
 JV7075
 JV7075.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7075
 JV7075.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7075
 JV7075.The ellipsoidal height was determined by GPS observations
 JV7075.and is referenced to NAD 83.
 JV7075
 JV7075. The following values were computed from the NAD 83(2011) position.
 JV7075
 JV7075;                    North         East     Units Scale Factor Converg.
 JV7075;SPC MD       -   160,672.936   376,885.404   MT  0.99995845   -0 10 03.9
 JV7075;SPC MD       -   527,141.12  1,236,498.20   sFT  0.99995845   -0 10 03.9
 JV7075;SPC VA N     - 2,161,350.202 3,606,610.904   MT  0.99998584   +0 46 09.7
 JV7075;SPC VA N     - 7,091,029.79 11,832,689.27   sFT  0.99998584   +0 46 09.7
 JV7075;UTM  18      - 4,331,852.462   303,977.351   MT  1.00007315   -1 25 50.9
 JV7075
 JV7075!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7075!SPC MD       -   0.99998530  x   0.99995845  =   0.99994375
 JV7075!SPC VA N     -   0.99998530  x   0.99998584  =   0.99997114
 JV7075!UTM  18      -   0.99998530  x   1.00007315  =   1.00005844
 JV7075
 JV7075_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0397731852(NAD 83)
 JV7075
 JV7075                          SUPERSEDED SURVEY CONTROL
 JV7075
 JV7075  NAD 83(2007)-  39 06 49.67287(N)    077 16 02.17631(W) AD(2002.00) 0
 JV7075  ELLIP H (02/10/07)   93.755  (m)                       GP(2002.00)    
 JV7075  ELLIP H (08/09/02)   93.762  (m)                       GP(       ) 4 2
 JV7075  NAD 83(1991)-  39 06 49.67391(N)    077 16 02.17658(W) AD(       ) B
 JV7075  ELLIP H (10/21/93)   93.724  (m)                       GP(       ) 2 2
 JV7075
 JV7075.Superseded values are not recommended for survey control.
 JV7075
 JV7075.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7075.See file dsdata.pdf to determine how the superseded data were derived.
 JV7075
 JV7075_MARKER: F = FLANGE-ENCASED ROD
 JV7075_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV7075_STAMPING: ANDERSON 1992
 JV7075_MARK LOGO: NGS
 JV7075_PROJECTION: FLUSH
 JV7075_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7075_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV7075_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7075+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2013
 JV7075_ROD/PIPE-DEPTH: 3.4 meters
 JV7075_SLEEVE-DEPTH  : 1.0 meters
 JV7075
 JV7075  HISTORY     - Date     Condition        Report By
 JV7075  HISTORY     - 1992     MONUMENTED       NGS
 JV7075  HISTORY     - 20130909 GOOD             BASE9
 JV7075
 JV7075                          STATION DESCRIPTION
 JV7075
 JV7075'DESCRIBED BY NATIONAL GEODETIC SURVEY 1992
 JV7075'THE STATION IS LOCATED ABOUT 5.0 KM (3.10 MI) EAST FROM THE NATIONAL
 JV7075'INSTITUTE OF STANDARDS AND TECHNOLOGY, 3.2 KM (2.00 MI) EAST FROM
 JV7075'DARNESTOWN AND ON THE SOUTH SIDE OF HIGHWAY 28 IN QUINCE ORCHARD.
 JV7075'OWNERSHIP--HIGHWAY RIGHT-OF-WAY.
 JV7075'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 112 (SENECA
 JV7075'ROAD) AND STATE HIGHWAY 28 (DARNESTOWN ROAD) IN DARNESTOWN, GO EAST
 JV7075'ON HIGHWAY 28 FOR 2.6 KM (1.60 MI) TO THE STATION ON THE RIGHT.
 JV7075'LOCATED 26.2 M (86.0 FT) NORTHEAST FROM THE CENTERLINE OF JONES LANE,
 JV7075'12.1 M (39.7 FT) SOUTHEAST FROM THE CENTERLINE OF HIGHWAY 28 AND 1.0
 JV7075'M (3.3 FT) NORTHWEST FROM A WITNESS POST.
 JV7075
 JV7075                          STATION RECOVERY (2013)
 JV7075
 JV7075'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV7075'THE MARK IS 4.3 M (14.1 FT) SOUTHWEST OF AN UNNUMBERED UTILITY POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7598 ***********************************************************************
 HV7598  DESIGNATION -  ANDREWS AFB CHAPEL SPIRE
 HV7598  PID         -  HV7598
 HV7598  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7598  COUNTRY     -  US
 HV7598  USGS QUAD   -  ANACOSTIA (2016)
 HV7598
 HV7598                         *CURRENT SURVEY CONTROL
 HV7598  ______________________________________________________________________
 HV7598* NAD 83(1993) POSITION- 38 48 44.91199(N) 076 53 36.61399(W)   ADJUSTED
 HV7598  ______________________________________________________________________
 HV7598  GEOID HEIGHT    -        -32.493 (meters)                     GEOID18
 HV7598  LAPLACE CORR    -         -4.84  (seconds)                    DEFLEC18
 HV7598  HORZ ORDER      -  THIRD
 HV7598
 HV7598.This mark is at Andrews Afb Airport (ADW)
 HV7598
 HV7598.The horizontal coordinates were established by classical geodetic methods
 HV7598.and adjusted by the National Geodetic Survey in November 1994.
 HV7598
 HV7598.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7598.GEOID18 height accuracy estimate available here.
 HV7598
 HV7598.Click photographs - Photos may exist for this station.
 HV7598
 HV7598.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7598
 HV7598. The following values were computed from the NAD 83(1993) position.
 HV7598
 HV7598;                    North         East     Units Scale Factor Converg.
 HV7598;SPC MD       -   127,194.854   409,249.217   MT  0.99995046   +0 04 00.6
 HV7598;SPC MD       -   417,305.12  1,342,678.47   sFT  0.99995046   +0 04 00.6
 HV7598;UTM  18      - 4,297,670.129   335,599.781   MT  0.99993282   -1 11 13.4
 HV7598
 HV7598_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3559997670(NAD 83)
 HV7598
 HV7598                          SUPERSEDED SURVEY CONTROL
 HV7598
 HV7598  NAD 83(1991)-  38 48 44.91137(N)    076 53 36.61458(W) AD(       ) 3
 HV7598  NAD 83(1986)-  38 48 44.90991(N)    076 53 36.62723(W) AD(       ) 3
 HV7598  NAD 27      -  38 48 44.50223(N)    076 53 37.72562(W) AD(       ) 3
 HV7598
 HV7598.Superseded values are not recommended for survey control.
 HV7598
 HV7598.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7598.See file dsdata.pdf to determine how the superseded data were derived.
 HV7598
 HV7598_MARKER: 90 = CHURCH SPIRE
 HV7598
 HV7598  HISTORY     - Date     Condition        Report By
 HV7598  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7598
 HV7598                          STATION DESCRIPTION
 HV7598
 HV7598'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7598'THE STATION IS THE CENTER OF THE TOP OF THE ANDREWS AIR FORCE
 HV7598'BASE CHAPEL SPIRE NUMBER 1 LOCATED ABOUT 340 FEET NORTHWEST OF
 HV7598'THE INTERSECTION OF ARKANSAS ROAD AND ARIZONA CIRCLE ON THE
 HV7598'AIR FORCE BASE.  IT HAS AN OVERALL HEIGHT OF ABOUT 93 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7590 ***********************************************************************
 HV7590  DESIGNATION -  ANDREWS AFB NEW CONTROL TOWER
 HV7590  PID         -  HV7590
 HV7590  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7590  COUNTRY     -  US
 HV7590  USGS QUAD   -  ANACOSTIA (2016)
 HV7590
 HV7590                         *CURRENT SURVEY CONTROL
 HV7590  ______________________________________________________________________
 HV7590* NAD 83(1993) POSITION- 38 48 18.74939(N) 076 52 39.89700(W)   ADJUSTED
 HV7590  ______________________________________________________________________
 HV7590  GEOID HEIGHT    -        -32.548 (meters)                     GEOID18
 HV7590  LAPLACE CORR    -         -5.13  (seconds)                    DEFLEC18
 HV7590  HORZ ORDER      -  THIRD
 HV7590
 HV7590.This mark is at Andrews Afb Airport (ADW)
 HV7590
 HV7590.The horizontal coordinates were established by classical geodetic methods
 HV7590.and adjusted by the National Geodetic Survey in November 1994.
 HV7590
 HV7590.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7590.GEOID18 height accuracy estimate available here.
 HV7590
 HV7590.Click photographs - Photos may exist for this station.
 HV7590
 HV7590.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7590
 HV7590. The following values were computed from the NAD 83(1993) position.
 HV7590
 HV7590;                    North         East     Units Scale Factor Converg.
 HV7590;SPC MD       -   126,389.842   410,618.598   MT  0.99995060   +0 04 36.2
 HV7590;SPC MD       -   414,664.01  1,347,171.18   sFT  0.99995060   +0 04 36.2
 HV7590;UTM  18      - 4,296,835.364   336,951.192   MT  0.99992737   -1 10 37.2
 HV7590
 HV7590_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3695196835(NAD 83)
 HV7590
 HV7590                          SUPERSEDED SURVEY CONTROL
 HV7590
 HV7590  NAD 83(1991)-  38 48 18.74872(N)    076 52 39.89730(W) AD(       ) 3
 HV7590  NAD 83(1986)-  38 48 18.74718(N)    076 52 39.91029(W) AD(       ) 3
 HV7590  NAD 27      -  38 48 18.34094(N)    076 52 41.01268(W) AD(       ) 3
 HV7590
 HV7590.Superseded values are not recommended for survey control.
 HV7590
 HV7590.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7590.See file dsdata.pdf to determine how the superseded data were derived.
 HV7590
 HV7590_MARKER: 58 = CONTROL TOWER
 HV7590
 HV7590  HISTORY     - Date     Condition        Report By
 HV7590  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7590
 HV7590                          STATION DESCRIPTION
 HV7590
 HV7590'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7590'THE STATION IS THE CENTER OF THE TOP OF THE ANDREWS AIR FORCE
 HV7590'BASE CONTROL TOWER.  THE TOWER IS OF CONCRETE CONSTRUCTION AND
 HV7590'HAS A OVERALL HEIGHT OF 144 FEET.
 HV7590'
 HV7590'THE STATION IS LOCATED NEAR THE CENTER OF ANDREWS AIR FORCE
 HV7590'BASE, ABOUT 8.5 MILES WEST OF UPPER MARLBORO, AND 13.5 MILES
 HV7590'EAST OF WASHINGTON D.C.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7591 ***********************************************************************
 HV7591  DESIGNATION -  ANDREWS AFB WSSC TANK BCN
 HV7591  PID         -  HV7591
 HV7591  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7591  COUNTRY     -  US
 HV7591  USGS QUAD   -  ANACOSTIA (2016)
 HV7591
 HV7591                         *CURRENT SURVEY CONTROL
 HV7591  ______________________________________________________________________
 HV7591* NAD 83(1993) POSITION- 38 49 19.92551(N) 076 53 01.93889(W)   ADJUSTED
 HV7591* NAVD 88 ORTHO HEIGHT -     3.3   (meters)       11.    (feet) VERTCON3
 HV7591  ______________________________________________________________________
 HV7591  GEOID HEIGHT    -        -32.500 (meters)                     GEOID18
 HV7591  LAPLACE CORR    -         -4.93  (seconds)                    DEFLEC18
 HV7591  HORZ ORDER      -  THIRD
 HV7591
 HV7591.This mark is at Andrews Afb Airport (ADW)
 HV7591
 HV7591.The horizontal coordinates were established by classical geodetic methods
 HV7591.and adjusted by the National Geodetic Survey in November 1994.
 HV7591
 HV7591.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7591.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7591
 HV7591.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7591.GEOID18 height accuracy estimate available here.
 HV7591
 HV7591.Click photographs - Photos may exist for this station.
 HV7591
 HV7591.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7591
 HV7591. The following values were computed from the NAD 83(1993) position.
 HV7591
 HV7591;                    North         East     Units Scale Factor Converg.
 HV7591;SPC MD       -   128,275.519   410,084.382   MT  0.99995028   +0 04 22.4
 HV7591;SPC MD       -   420,850.60  1,345,418.51   sFT  0.99995028   +0 04 22.4
 HV7591;UTM  18      - 4,298,732.238   336,458.381   MT  0.99992936   -1 10 52.6
 HV7591
 HV7591!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7591!SPC MD       -   1.00000458  x   0.99995028  =   0.99995486
 HV7591!UTM  18      -   1.00000458  x   0.99992936  =   0.99993394
 HV7591
 HV7591_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3645898732(NAD 83)
 HV7591
 HV7591                          SUPERSEDED SURVEY CONTROL
 HV7591
 HV7591  NAD 83(1991)-  38 49 19.92481(N)    076 53 01.93907(W) AD(       ) 3
 HV7591  NAD 83(1986)-  38 49 19.92333(N)    076 53 01.95191(W) AD(       ) 3
 HV7591  NAD 27      -  38 49 19.51612(N)    076 53 03.05242(W) AD(       ) 3
 HV7591  NGVD 29 (03/31/99)    3.6    (m)           12.     (f) VERT ANG       
 HV7591
 HV7591.Superseded values are not recommended for survey control.
 HV7591
 HV7591.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7591.See file dsdata.pdf to determine how the superseded data were derived.
 HV7591
 HV7591_MARKER: 21 = AIRPORT BEACON
 HV7591
 HV7591  HISTORY     - Date     Condition        Report By
 HV7591  HISTORY     - 1968     FIRST OBSERVED   CGS
 HV7591  HISTORY     - 1975     GOOD             NGS
 HV7591  HISTORY     - 19880615 GOOD             NGS
 HV7591
 HV7591                          STATION DESCRIPTION
 HV7591
 HV7591'DESCRIBED BY COAST AND GEODETIC SURVEY 1968 (JBJ)
 HV7591'THE STATION IS THE CENTER OF THE REVOLVING LIGHT ON TOP OF THE
 HV7591'ANDREWS AIR FORCE BASE WASHINGTON SUBURBAN SANITATION COMMISSION
 HV7591'TANK AND AIRPORT BEACON.  IT IS A RADIAL CONE ELEVATED TANK THAT
 HV7591'IS PRESENTLY PAINTED RED AND WHITE.  THE HEIGHT IS ABOUT 200 FEET.
 HV7591'
 HV7591'THE STATION IS LOCATED NEAR THE WEST SIDE OF ANDREWS AIR FORCE
 HV7591'BASE, ABOUT 10.5 MILES WEST OF UPPER MARLBORO, 7.5 MILES EAST OF
 HV7591'WASHINGTON D.C.
 HV7591'
 HV7591'TO REACH THE STATION FROM THE MAIN GATE, ANDREWS AIR FORCE BASE,
 HV7591'GO SOUTHEAST ON WESTOVER DRIVE FOR 0.05 MILE TO WEST PERIMETER
 HV7591'ROAD, TURN LEFT AND GO NORTHEAST FOR 0.2 MILE TO WEST PERIMETER
 HV7591'ROAD TO THE STATION ON THE LEFT.
 HV7591
 HV7591                          STATION RECOVERY (1975)
 HV7591
 HV7591'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (PDC)
 HV7591'THE STATION WAS RECOVERED AS DESCRIBED AND IN GOOD CONDITION.
 HV7591'
 HV7591'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV7591'AT ANDREWS AFB.
 HV7591
 HV7591                          STATION RECOVERY (1988)
 HV7591
 HV7591'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HV7591'LOCATED AT ANDREWS AIR FORCE BASE NW OF THE END OF RUNWAY 19R ABOUT
 HV7591'MIDWAY BETWEEN ALLENTOWN RD AND PERIMETER RD AND NEAR THE MAIN
 HV7591'ENTRANCE TO THE BASE.  THE BEACON IS MOUNTED ATOP A LARGE, RED AND
 HV7591'WHITE WATER TANK.  THE SHAFT SUPPORTING THE BEACON WAS OBSERVED UPON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1718 ***********************************************************************
 HU1718  DESIGNATION -  ANDREWS RM 3
 HU1718  PID         -  HU1718
 HU1718  STATE/COUNTY-  MD/WICOMICO
 HU1718  COUNTRY     -  US
 HU1718  USGS QUAD   -  DELMAR (2016)
 HU1718
 HU1718                         *CURRENT SURVEY CONTROL
 HU1718  ______________________________________________________________________
 HU1718* NAD 83(1991) POSITION- 38 27 16.54876(N) 075 31 21.08652(W)   ADJUSTED
 HU1718* NAVD 88 ORTHO HEIGHT -    17.886 (meters)       58.68  (feet) ADJUSTED
 HU1718  ______________________________________________________________________
 HU1718  GEOID HEIGHT    -        -35.762 (meters)                     GEOID18
 HU1718  LAPLACE CORR    -         -0.94  (seconds)                    DEFLEC18
 HU1718  DYNAMIC HEIGHT  -         17.874 (meters)       58.64  (feet) COMP
 HU1718  MODELED GRAVITY -    980,012.4   (mgal)                       NAVD 88
 HU1718
 HU1718  HORZ ORDER      -  SECOND
 HU1718  VERT ORDER      -  SECOND    CLASS I
 HU1718
 HU1718.The horizontal coordinates were established by classical geodetic methods
 HU1718.and adjusted by the National Geodetic Survey in January 1992.
 HU1718
 HU1718.The orthometric height was determined by differential leveling and
 HU1718.adjusted by the NATIONAL GEODETIC SURVEY
 HU1718.in June 1991.
 HU1718
 HU1718.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1718.GEOID18 height accuracy estimate available here.
 HU1718
 HU1718.Click photographs - Photos may exist for this station.
 HU1718
 HU1718.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1718
 HU1718.The dynamic height is computed by dividing the NAVD 88
 HU1718.geopotential number by the normal gravity value computed on the
 HU1718.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1718.degrees latitude (g = 980.6199 gals.).
 HU1718
 HU1718.The modeled gravity was interpolated from observed gravity values.
 HU1718
 HU1718. The following values were computed from the NAD 83(1991) position.
 HU1718
 HU1718;                    North         East     Units Scale Factor Converg.
 HU1718;SPC MD       -    88,507.043   528,956.546   MT  0.99997670   +0 55 38.3
 HU1718;SPC MD       -   290,376.86  1,735,418.27   sFT  0.99997670   +0 55 38.3
 HU1718;UTM  18      - 4,256,384.735   454,408.284   MT  0.99962560   -0 19 29.9
 HU1718
 HU1718!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1718!SPC MD       -   1.00000281  x   0.99997670  =   0.99997950
 HU1718!UTM  18      -   1.00000281  x   0.99962560  =   0.99962840
 HU1718
 HU1718:                Primary Azimuth Mark                     Grid Az
 HU1718:SPC MD       -  TOWNSEND                                 089 40 08.4
 HU1718:UTM  18      -  TOWNSEND                                 090 55 16.6
 HU1718
 HU1718_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5440856384(NAD 83)
 HU1718
 HU1718|---------------------------------------------------------------------|
 HU1718| PID    Reference Object                     Distance      Geod. Az  |
 HU1718|                                                           dddmmss.s |
 HU1718| HU1717 TOWNSEND                            APPROX. 1.1 KM 0903546.7 |
 HU1718|---------------------------------------------------------------------|
 HU1718
 HU1718                          SUPERSEDED SURVEY CONTROL
 HU1718
 HU1718  NAD 83(1986)-  38 27 16.54023(N)    075 31 21.11035(W) AD(       ) 2
 HU1718  NAD 27      -  38 27 16.12477(N)    075 31 22.38548(W) AD(       ) 2
 HU1718  NGVD 29 (06/12/91)   18.138  (m)           59.51   (f) ADJUSTED    2 1
 HU1718  NGVD 29 (07/19/86)   18.3    (m)           60.     (f) VERT ANG       
 HU1718
 HU1718.Superseded values are not recommended for survey control.
 HU1718
 HU1718.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1718.See file dsdata.pdf to determine how the superseded data were derived.
 HU1718
 HU1718_MARKER: DR = REFERENCE MARK DISK
 HU1718_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1718_STAMPING: ANDREWS NO 3 1974
 HU1718_MARK LOGO: NGS
 HU1718_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1718+STABILITY: SURFACE MOTION
 HU1718_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1718+SATELLITE: SATELLITE OBSERVATIONS - November 21, 1989
 HU1718
 HU1718  HISTORY     - Date     Condition        Report By
 HU1718  HISTORY     - 1974     MONUMENTED       NGS
 HU1718  HISTORY     - 19891121 GOOD             NGS
 HU1718
 HU1718                          STATION DESCRIPTION
 HU1718
 HU1718'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU1718'4.9 KM (3.04 MI) EASTERLY ALONG STATE HIGHWAY 54 FROM ITS JUNCTION
 HU1718'WITH THE CONRAIL RAILROAD IN DELMAR, 15.8 M (51.84 FT) EAST OF THE
 HU1718'CENTER OF MELSON ROAD, 8.2 M (26.90 FT) SOUTH OF THE CENTERLINE OF
 HU1718'THE HIGHWAY, 2.6 M (8.53 FT) NORTHWEST OF UTILITY POLE NUMBER 49076
 HU1718'96375, 0.3 M (0.98 FT) NORTH OF A WITNESS POST, LEVEL WITH THE
 HU1718'HIGHWAY, AND IN A CONCRETE MONUMENT THAT IS 0.1 M (0.33 FT) BELOW THE
 HU1718'GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3138 ***********************************************************************
 DS3138  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3138  DESIGNATION -  ANDY
 DS3138  PID         -  DS3138
 DS3138  STATE/COUNTY-  MD/HARFORD
 DS3138  COUNTRY     -  US
 DS3138  USGS QUAD   -  ABERDEEN (2016)
 DS3138
 DS3138                         *CURRENT SURVEY CONTROL
 DS3138  ______________________________________________________________________
 DS3138* NAD 83(2011) POSITION- 39 31 24.29438(N) 076 10 20.32605(W)   ADJUSTED
 DS3138* NAD 83(2011) ELLIP HT-    22.429 (meters)        (12/12/24)   ADJUSTED
 DS3138* NAD 83(2011) EPOCH   -  2010.00
 DS3138* NAVD 88 ORTHO HEIGHT -    55.48  (meters)      182.0   (feet) GPS OBS
 DS3138  ______________________________________________________________________
 DS3138  GEOID HEIGHT    -        -33.070 (meters)                     GEOID18
 DS3138  NAD 83(2011) X  -  1,177,463.407 (meters)                     COMP
 DS3138  NAD 83(2011) Y  - -4,783,791.794 (meters)                     COMP
 DS3138  NAD 83(2011) Z  -  4,037,323.423 (meters)                     COMP
 DS3138  LAPLACE CORR    -         -2.79  (seconds)                    DEFLEC18
 DS3138
 DS3138  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3138  Standards:
 DS3138         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3138            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3138  -------------------------------------------------------------------
 DS3138  NETWORK    1.05   1.63           0.46   0.39   0.83     -0.11017645
 DS3138  -------------------------------------------------------------------
 DS3138  Click here for local accuracies and other accuracy information.
 DS3138
 DS3138.The horizontal coordinates were established by GPS observations
 DS3138.and adjusted by the MD DEPT OF TRANSP in December 2024.
 DS3138
 DS3138.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3138.been affixed to the stable North American tectonic plate. See 
 DS3138.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3138
 DS3138.The horizontal coordinates are valid at the epoch date displayed above
 DS3138.which is a decimal equivalence of Year/Month/Day.
 DS3138
 DS3138.The orthometric height was determined by GPS observations and a
 DS3138.high-resolution geoid model using precise GPS observation and
 DS3138.processing techniques.
 DS3138
 DS3138.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3138.GEOID18 height accuracy estimate available here.
 DS3138
 DS3138.Click photographs - Photos may exist for this station.
 DS3138
 DS3138.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3138
 DS3138.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3138
 DS3138.The ellipsoidal height was determined by GPS observations
 DS3138.and is referenced to NAD 83.
 DS3138
 DS3138. The following values were computed from the NAD 83(2011) position.
 DS3138
 DS3138;                    North         East     Units Scale Factor Converg.
 DS3138;SPC MD       -   206,437.242   471,168.311   MT  1.00001367   +0 31 10.1
 DS3138;SPC MD       -   677,286.18  1,545,824.70   sFT  1.00001367   +0 31 10.1
 DS3138;UTM  18      - 4,375,519.200   399,238.179   MT  0.99972500   -0 44 46.0
 DS3138
 DS3138!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3138!SPC MD       -   0.99999648  x   1.00001367  =   1.00001015
 DS3138!UTM  18      -   0.99999648  x   0.99972500  =   0.99972148
 DS3138
 DS3138_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9923875519(NAD 83)
 DS3138
 DS3138                          SUPERSEDED SURVEY CONTROL
 DS3138
 DS3138.No superseded survey control is available for this station.
 DS3138
 DS3138_MARKER: DD = SURVEY DISK
 DS3138_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DS3138_SP_SET: SIDEWALK
 DS3138_STAMPING: ANDY 1964
 DS3138_MARK LOGO: MDBCSM
 DS3138_PROJECTION: FLUSH
 DS3138_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS3138_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3138+SATELLITE: SATELLITE OBSERVATIONS - December 11, 2023
 DS3138
 DS3138  HISTORY     - Date     Condition        Report By
 DS3138  HISTORY     - 19640101 MONUMENTED       MDBCSM
 DS3138  HISTORY     - 20231211 GOOD             MDSHA
 DS3138
 DS3138                          STATION DESCRIPTION
 DS3138
 DS3138'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DS3138'THE MARK IS LOCATED ABOUT 4.6 MI (7.5 KM) WEST-SOUTHWEST OF HAVRE DE
 DS3138'GRACE, 4.1 MI (6.6 KM) NORTH-NORTHEAST OF PERRYMAN AND 1.1 MI (1.7 KM)
 DS3138'NORTH-NORTHWEST OF ABERDEEN.
 DS3138'
 DS3138'TO REACH THE MARK FROM THE INTERSECTION OF PULASKI HIGHWAY ( US 40)
 DS3138'PROCEED NORTH WEST ON MD 22 FOR 1.41 KM (0.88 MI) TO ROBERTS WAY. TURN
 DS3138'RIGHT AND PROCEED 0.12 KM (0.07 MI) TO THE MARK ON THE RIGHT.
 DS3138'
 DS3138'THE MARK IS 65.0 FT (19.8 M) SOUTH OF A UTILITY POLE NUMBERED G AND E
 DS3138'485738, 24.1 FT (7.3 M) EAST OF A SEWER MANHOLE, 21.9 FT (6.7 M) EAST
 DS3138'OF THE CENTERLINE OF ROBERTS ROAD, 20.8 FT (6.3 M) NORTHEAST OF A
 DS3138'UTILITY POLE NUMBERED G AND E 485712, 20.5 FT (6.2 M) NORTHEAST OF A
 DS3138'WATER VALVE AND ABOUT 0.5 FT (15 CM) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4733 ***********************************************************************
 AB4733  DESIGNATION -  ANGELL
 AB4733  PID         -  AB4733
 AB4733  STATE/COUNTY-  MD/CARROLL
 AB4733  COUNTRY     -  US
 AB4733  USGS QUAD   -  TANEYTOWN (2016)
 AB4733
 AB4733                         *CURRENT SURVEY CONTROL
 AB4733  ______________________________________________________________________
 AB4733* NAD 83(2011) POSITION- 39 40 15.12771(N) 077 09 41.10302(W)   ADJUSTED
 AB4733* NAD 83(2011) ELLIP HT-   107.623 (meters)        (06/27/12)   ADJUSTED
 AB4733* NAD 83(2011) EPOCH   -  2010.00
 AB4733* NAVD 88 ORTHO HEIGHT -   140.6   (meters)      461.    (feet) GPS OBS
 AB4733  ______________________________________________________________________
 AB4733  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4733  GEOID HEIGHT    -        -32.962 (meters)                     GEOID99
 AB4733  GEOID HEIGHT    -        -32.970 (meters)                     GEOID18
 AB4733  NAD 83(2011) X  -  1,092,404.710 (meters)                     COMP
 AB4733  NAD 83(2011) Y  - -4,793,294.615 (meters)                     COMP
 AB4733  NAD 83(2011) Z  -  4,049,992.695 (meters)                     COMP
 AB4733  LAPLACE CORR    -          4.75  (seconds)                    DEFLEC18
 AB4733
 AB4733  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4733  Standards:
 AB4733         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4733            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4733  -------------------------------------------------------------------
 AB4733  NETWORK    0.84   2.49           0.37   0.30   1.27      0.25263324
 AB4733  -------------------------------------------------------------------
 AB4733  Click here for local accuracies and other accuracy information.
 AB4733
 AB4733.The horizontal coordinates were established by GPS observations
 AB4733.and adjusted by the National Geodetic Survey in June 2012.
 AB4733
 AB4733.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4733.been affixed to the stable North American tectonic plate. See 
 AB4733.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4733
 AB4733.The horizontal coordinates are valid at the epoch date displayed above
 AB4733.which is a decimal equivalence of Year/Month/Day.
 AB4733
 AB4733.The orthometric height was determined by GPS observations and a
 AB4733.high-resolution geoid model.
 AB4733
 AB4733.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4733.GEOID18 height accuracy estimate available here.
 AB4733
 AB4733.Click photographs - Photos may exist for this station.
 AB4733
 AB4733.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4733
 AB4733.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4733
 AB4733.The ellipsoidal height was determined by GPS observations
 AB4733.and is referenced to NAD 83.
 AB4733
 AB4733. The following values were computed from the NAD 83(2011) position.
 AB4733
 AB4733;                    North         East     Units Scale Factor Converg.
 AB4733;SPC MD       -   222,498.662   386,149.355   MT  1.00004611   -0 06 04.7
 AB4733;SPC MD       -   729,981.03  1,266,891.68   sFT  1.00004611   -0 06 04.7
 AB4733;UTM  18      - 4,393,460.768   314,611.082   MT  1.00002315   -1 22 48.7
 AB4733
 AB4733!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4733!SPC MD       -   0.99998312  x   1.00004611  =   1.00002923
 AB4733!UTM  18      -   0.99998312  x   1.00002315  =   1.00000627
 AB4733
 AB4733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1461193460(NAD 83)
 AB4733
 AB4733                          SUPERSEDED SURVEY CONTROL
 AB4733
 AB4733  NAD 83(2007)-  39 40 15.12770(N)    077 09 41.10414(W) AD(2002.00) 0
 AB4733  ELLIP H (02/10/07)  107.627  (m)                       GP(2002.00)    
 AB4733  ELLIP H (08/30/02)  107.647  (m)                       GP(       ) 4 2
 AB4733  NAD 83(1991)-  39 40 15.12731(N)    077 09 41.10380(W) AD(       ) 1
 AB4733  ELLIP H (07/03/96)  107.604  (m)                       GP(       ) 1 1
 AB4733  NAVD 88 (07/03/96)  140.6    (m)  GEOID93  model used  GPS OBS        
 AB4733
 AB4733.Superseded values are not recommended for survey control.
 AB4733
 AB4733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4733.See file dsdata.pdf to determine how the superseded data were derived.
 AB4733
 AB4733_MARKER: DD = SURVEY DISK
 AB4733_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4733_STAMPING: ANGELL 1995
 AB4733_MARK LOGO: MD-013
 AB4733_PROJECTION: FLUSH
 AB4733_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4733_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4733+STABILITY: SURFACE MOTION
 AB4733_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4733+SATELLITE: SATELLITE OBSERVATIONS - December 05, 2016
 AB4733
 AB4733  HISTORY     - Date     Condition        Report By
 AB4733  HISTORY     - 1995     MONUMENTED       MD-013
 AB4733  HISTORY     - 20050902 GOOD             GEOCAC
 AB4733  HISTORY     - 20161205 GOOD             BASE9
 AB4733
 AB4733                          STATION DESCRIPTION
 AB4733
 AB4733'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4733'STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) NORTHEAST OF TANEYTOWN. TO
 AB4733'REACH STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE)
 AB4733'AND MD ROUTE 194 (FRANCIS SCOTT KEY HIGHWAY) IN TANEYTOWN, GO NORTH ON
 AB4733'MD ROUTE 194 FOR 1.15 MI (1.85 KM) TO THE STATION ON THE RIGHT.
 AB4733'STATION IS ALSO 0.25 MI (0.40 KM) SOUTH OF THE INTERSECTION OF MD
 AB4733'ROUTE 194 AND ANGELL ROAD. STATION IS BETWEEN THE HIGHWAY AND OLD MD
 AB4733'ROUTE 194. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4733'MONUMENT SET FLUSH WITH THE GROUND. IT IS 50.5 FT (15.4 M) SOUTHEAST
 AB4733'OF MD ROUTE 194, 50.5 FT (15.4 M) NORTHWEST OF OLD MD ROUTE 194, 40.5
 AB4733'FT (12.3 M) SOUTHWEST OF THE CENTERLINE OF A ROAD BETWEEN OLD AND NEW
 AB4733'MD ROUTE 194 AND 106.4 FT (32.4 M) NORTHWEST OF POWER POLE NO.F-44217.
 AB4733
 AB4733                          STATION RECOVERY (2005)
 AB4733
 AB4733'RECOVERY NOTE BY GEOCACHING 2005 (RCF)
 AB4733'RECOVERED IN GOOD CONDITION.
 AB4733
 AB4733                          STATION RECOVERY (2016)
 AB4733
 AB4733'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 AB4733'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1002 ***********************************************************************
 JV1002  DESIGNATION -  ANNAPOLIS
 JV1002  PID         -  JV1002
 JV1002  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1002  COUNTRY     -  US
 JV1002  USGS QUAD   -  ODENTON (2016)
 JV1002
 JV1002                         *CURRENT SURVEY CONTROL
 JV1002  ______________________________________________________________________
 JV1002* NAD 83(1986) POSITION- 39 06 58.     (N) 076 43 42.     (W)   SCALED
 JV1002* NAVD 88 ORTHO HEIGHT -    74.103 (meters)      243.12  (feet) ADJUSTED
 JV1002  ______________________________________________________________________
 JV1002  GEOID HEIGHT    -        -32.573 (meters)                     GEOID18
 JV1002  DYNAMIC HEIGHT  -         74.063 (meters)      242.99  (feet) COMP
 JV1002  MODELED GRAVITY -    980,085.4   (mgal)                       NAVD 88
 JV1002
 JV1002  VERT ORDER      -  FIRST     CLASS II
 JV1002
 JV1002.The horizontal coordinates were scaled from a map and have
 JV1002.an estimated accuracy of +/- 6 seconds.
 JV1002
 JV1002.The orthometric height was determined by differential leveling and
 JV1002.adjusted by the NATIONAL GEODETIC SURVEY
 JV1002.in June 1991.
 JV1002
 JV1002.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1002.GEOID18 height accuracy estimate available here.
 JV1002
 JV1002.Click photographs - Photos may exist for this station.
 JV1002
 JV1002.The dynamic height is computed by dividing the NAVD 88
 JV1002.geopotential number by the normal gravity value computed on the
 JV1002.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1002.degrees latitude (g = 980.6199 gals.).
 JV1002
 JV1002.The modeled gravity was interpolated from observed gravity values.
 JV1002
 JV1002;                    North         East    Units  Estimated Accuracy
 JV1002;SPC MD       -   160,930.      423,490.      MT  (+/- 180 meters Scaled)
 JV1002
 JV1002_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ505310(NAD 83)
 JV1002
 JV1002                          SUPERSEDED SURVEY CONTROL
 JV1002
 JV1002  NGVD 29 (11/26/84)   74.328  (m)          243.86   (f) ADJUSTED    1 2
 JV1002
 JV1002.Superseded values are not recommended for survey control.
 JV1002
 JV1002.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1002.See file dsdata.pdf to determine how the superseded data were derived.
 JV1002
 JV1002_MARKER: DD = SURVEY DISK
 JV1002_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1002_STAMPING: ANNAPOLIS 1941
 JV1002_MARK LOGO: USACE
 JV1002_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1002+STABILITY: SURFACE MOTION
 JV1002
 JV1002  HISTORY     - Date     Condition        Report By
 JV1002  HISTORY     - 1941     MONUMENTED       USACE
 JV1002
 JV1002                          STATION DESCRIPTION
 JV1002
 JV1002'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1941
 JV1002'AT FORT GEORGE G. MEADE, ANNE ARUNDEL COUNTY, ABOUT
 JV1002'300 FEET NORTHWEST OF A WATER TANK, ABOUT 119 FEET EAST OF
 JV1002'ANNAPOLIS ROAD, 84.4 FEET SOUTH OF THE SOUTHWEST CORNER OF
 JV1002'BUILDING TL-3, AND 7.6 FEET NORTH OF A WHITE WOODEN WITNESS
 JV1002'POST STENCILED U.S.B.M.  A STANDARD DISK, STAMPED ANNAPOLIS 1941
 JV1002'AND SET IN THE TOP OF A CONCRETE POST.  NOTE-1956 REPORT - SITE
 JV1002'OF BENCH MARK NOW A LARGE BLACK-TOP PARKING AREA.  PRESUMABLY
 JV1002'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ4426 ***********************************************************************
 AJ4426  HT_MOD      -  This is a Height Modernization Survey Station.
 AJ4426  CORS        -  This is a GPS Continuously Operating Reference Station.
 AJ4426  DESIGNATION -  ANNAPOLIS 1 CORS ARP
 AJ4426  CORS_ID     -  ANP1
 AJ4426  PID         -  AJ4426
 AJ4426  STATE/COUNTY-  MD/ANNE ARUNDEL
 AJ4426  COUNTRY     -  US
 AJ4426  USGS QUAD   -  ROUND BAY (2016)
 AJ4426
 AJ4426                         *CURRENT SURVEY CONTROL
 AJ4426  ______________________________________________________________________
 AJ4426* NAD 83(2011) POSITION- 39 00 37.00413(N) 076 36 33.28079(W)   ADJUSTED
 AJ4426* NAD 83(2011) ELLIP HT-    21.523 (meters)        (04/??/25)   ADJUSTED
 AJ4426* NAD 83(2011) EPOCH   -  2010.00
 AJ4426* NAVD 88 ORTHO HEIGHT -    54.56  (meters)      179.0   (feet) GPS OBS
 AJ4426  ______________________________________________________________________
 AJ4426  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ4426  GEOID HEIGHT    -        -32.981 (meters)                     GEOID99
 AJ4426  GEOID HEIGHT    -        -33.007 (meters)                     GEOID18
 AJ4426  NAD 83(2011) X  -  1,149,299.202 (meters)                     COMP
 AJ4426  NAD 83(2011) Y  - -4,827,708.224 (meters)                     COMP
 AJ4426  NAD 83(2011) Z  -  3,993,217.324 (meters)                     COMP
 AJ4426
 AJ4426  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ4426  Standards:
 AJ4426         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ4426            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ4426  -------------------------------------------------------------------
 AJ4426  NETWORK    0.23   0.58           0.10   0.08   0.30      0.03431100
 AJ4426  -------------------------------------------------------------------
 AJ4426
 AJ4426.The coordinates were established by GPS observations
 AJ4426.and adjusted by the National Geodetic Survey in April 2025.
 AJ4426
 AJ4426.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ4426.been affixed to the stable North American Tectonic Plate. 
 AJ4426
 AJ4426.The coordinates are valid at the epoch date displayed above
 AJ4426.which is a decimal equivalence of Year/Month/Day.
 AJ4426
 AJ4426.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 AJ4426.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 AJ4426.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 AJ4426.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 AJ4426.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 AJ4426.published epoch of 2010.00.
 AJ4426
 AJ4426.Additional information on MYCS is available at:
 AJ4426.https://geodesy.noaa.gov/CORS/index.shtml
 AJ4426
 AJ4426.The orthometric height was determined by GPS observations and a
 AJ4426.high-resolution geoid model using precise GPS observation and
 AJ4426.processing techniques.
 AJ4426
 AJ4426.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ4426.GEOID18 height accuracy estimate available here.
 AJ4426
 AJ4426.The PID for the CORS L1 Phase Center is AJ4427.
 AJ4426
 AJ4426.Click photographs - Photos may exist for this station.
 AJ4426
 AJ4426.The XYZ, and position/ellipsoidal ht. are equivalent.
 AJ4426
 AJ4426.The ellipsoidal height was determined by GPS observations
 AJ4426.and is referenced to NAD 83.
 AJ4426
 AJ4426. The following values were computed from the NAD 83(2011) position.
 AJ4426
 AJ4426;                    North         East     Units Scale Factor Converg.
 AJ4426;SPC MD       -   149,219.706   433,843.124   MT  0.99995259   +0 14 42.9
 AJ4426;SPC MD       -   489,564.99  1,423,366.98   sFT  0.99995259   +0 14 42.9
 AJ4426;UTM  18      - 4,319,149.072   360,669.002   MT  0.99983904   -1 00 47.2
 AJ4426
 AJ4426!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ4426!SPC MD       -   0.99999662  x   0.99995259  =   0.99994921
 AJ4426!UTM  18      -   0.99999662  x   0.99983904  =   0.99983566
 AJ4426
 AJ4426_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6066919149(NAD 83)
 AJ4426
 AJ4426                          SUPERSEDED SURVEY CONTROL
 AJ4426
 AJ4426  NAD 83(2011)-  39 00 37.00419(N)    076 36 33.28070(W) AD(2010.00) c
 AJ4426  ELLIP H (06/??/19)   21.529  (m)                       GP(2010.00) c c
 AJ4426  NAD 83(2011)-  39 00 37.00410(N)    076 36 33.28057(W) AD(2010.00) c
 AJ4426  NAD 83(2011)-  39 00 37.00424(N)    076 36 33.28075(W) AD(2010.00) c
 AJ4426  ELLIP H (08/??/11)   21.524  (m)                       GP(2010.00) c c
 AJ4426  NAD 83(2007)-  39 00 37.00436(N)    076 36 33.28161(W) AD(2002.00) c
 AJ4426  NAD 83(CORS)-  39 00 37.00436(N)    076 36 33.28161(W) AD(2002.00) c
 AJ4426  ELLIP H (03/??/02)   21.545  (m)                       GP(2002.00) c c
 AJ4426  NAD 83(CORS)-  39 00 37.00435(N)    076 36 33.28160(W) AD(1997.00) c
 AJ4426  ELLIP H (07/??/01)   21.545  (m)                       GP(1997.00) c c
 AJ4426
 AJ4426.Superseded values are not recommended for survey control.
 AJ4426
 AJ4426.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ4426.See file dsdata.pdf to determine how the superseded data were derived.
 AJ4426
 AJ4426_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 AJ4426_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ4426
 AJ4426                          STATION DESCRIPTION
 AJ4426
 AJ4426'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 AJ4426'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 AJ4426'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 AJ4426'AND LOG FILES ACCESSIBLE AT:
 AJ4426'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ4428 ***********************************************************************
 AJ4428  CORS        -  This is a GPS Continuously Operating Reference Station.
 AJ4428  DESIGNATION -  ANNAPOLIS 2 CORS ARP
 AJ4428  CORS_ID     -  ANP2
 AJ4428  PID         -  AJ4428
 AJ4428  STATE/COUNTY-  MD/ANNE ARUNDEL
 AJ4428  COUNTRY     -  US
 AJ4428  USGS QUAD   -  ROUND BAY (2016)
 AJ4428
 AJ4428                         *CURRENT SURVEY CONTROL
 AJ4428  ______________________________________________________________________
 AJ4428* NAD 83(2011) POSITION- 39 00 37.83685(N) 076 36 32.70527(W)   ADJUSTED
 AJ4428* NAD 83(2011) ELLIP HT-    22.678 (meters)        (04/??/25)   ADJUSTED
 AJ4428* NAD 83(2011) EPOCH   -  2010.00
 AJ4428  ______________________________________________________________________
 AJ4428  GEOID HEIGHT    -        -33.007 (meters)                     GEOID18
 AJ4428  NAD 83(2011) X  -  1,149,309.137 (meters)                     COMP
 AJ4428  NAD 83(2011) Y  - -4,827,690.165 (meters)                     COMP
 AJ4428  NAD 83(2011) Z  -  3,993,238.004 (meters)                     COMP
 AJ4428
 AJ4428  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ4428  Standards:
 AJ4428         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ4428            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ4428  -------------------------------------------------------------------
 AJ4428  NETWORK    0.13   0.27           0.06   0.02   0.14      0.02113900
 AJ4428  -------------------------------------------------------------------
 AJ4428
 AJ4428.The coordinates were established by GPS observations
 AJ4428.and adjusted by the National Geodetic Survey in April 2025.
 AJ4428
 AJ4428.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ4428.been affixed to the stable North American Tectonic Plate. 
 AJ4428
 AJ4428.The coordinates are valid at the epoch date displayed above
 AJ4428.which is a decimal equivalence of Year/Month/Day.
 AJ4428
 AJ4428.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 AJ4428.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 AJ4428.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 AJ4428.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 AJ4428.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 AJ4428.published epoch of 2010.00.
 AJ4428
 AJ4428.Additional information on MYCS is available at:
 AJ4428.https://geodesy.noaa.gov/CORS/index.shtml
 AJ4428
 AJ4428.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ4428.GEOID18 height accuracy estimate available here.
 AJ4428
 AJ4428.The PID for the CORS L1 Phase Center is AJ4429.
 AJ4428
 AJ4428.Click photographs - Photos may exist for this station.
 AJ4428
 AJ4428.The XYZ, and position/ellipsoidal ht. are equivalent.
 AJ4428
 AJ4428.The ellipsoidal height was determined by GPS observations
 AJ4428.and is referenced to NAD 83.
 AJ4428
 AJ4428. The following values were computed from the NAD 83(2011) position.
 AJ4428
 AJ4428;                    North         East     Units Scale Factor Converg.
 AJ4428;SPC MD       -   149,245.443   433,856.860   MT  0.99995260   +0 14 43.3
 AJ4428;SPC MD       -   489,649.42  1,423,412.05   sFT  0.99995260   +0 14 43.3
 AJ4428;UTM  18      - 4,319,174.498   360,683.298   MT  0.99983900   -1 00 46.9
 AJ4428
 AJ4428!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ4428!SPC MD       -   0.99999644  x   0.99995260  =   0.99994904
 AJ4428!UTM  18      -   0.99999644  x   0.99983900  =   0.99983544
 AJ4428
 AJ4428_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6068319174(NAD 83)
 AJ4428
 AJ4428                          SUPERSEDED SURVEY CONTROL
 AJ4428
 AJ4428  NAD 83(2011)-  39 00 37.83693(N)    076 36 32.70531(W) AD(2010.00) c
 AJ4428  ELLIP H (06/??/19)   22.681  (m)                       GP(2010.00) c c
 AJ4428  NAD 83(2011)-  39 00 37.83691(N)    076 36 32.70540(W) AD(2010.00) c
 AJ4428  ELLIP H (08/??/11)   22.683  (m)                       GP(2010.00) c c
 AJ4428  NAD 83(CORS)-  39 00 37.83694(N)    076 36 32.70600(W) AD(2002.00) c
 AJ4428  ELLIP H (03/??/02)   22.717  (m)                       GP(2002.00) c c
 AJ4428  NAD 83(CORS)-  39 00 37.83694(N)    076 36 32.70598(W) AD(1997.00) c
 AJ4428  ELLIP H (07/??/01)   22.717  (m)                       GP(1997.00) c c
 AJ4428
 AJ4428.Superseded values are not recommended for survey control.
 AJ4428
 AJ4428.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ4428.See file dsdata.pdf to determine how the superseded data were derived.
 AJ4428
 AJ4428_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 AJ4428
 AJ4428                          STATION DESCRIPTION
 AJ4428
 AJ4428'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 AJ4428'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 AJ4428'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 AJ4428'AND LOG FILES ACCESSIBLE AT:
 AJ4428'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ5210 ***********************************************************************
 DJ5210  CORS        -  This is a GPS Continuously Operating Reference Station.
 DJ5210  DESIGNATION -  ANNAPOLIS 5 CORS ARP
 DJ5210  CORS_ID     -  ANP5
 DJ5210  PID         -  DJ5210
 DJ5210  STATE/COUNTY-  MD/ANNE ARUNDEL
 DJ5210  COUNTRY     -  US
 DJ5210  USGS QUAD   -  ROUND BAY (2016)
 DJ5210
 DJ5210                         *CURRENT SURVEY CONTROL
 DJ5210  ______________________________________________________________________
 DJ5210* NAD 83(2011) POSITION- 39 00 37.00427(N) 076 36 33.28049(W)   ADJUSTED
 DJ5210* NAD 83(2011) ELLIP HT-    21.701 (meters)        (04/??/25)   ADJUSTED
 DJ5210* NAD 83(2011) EPOCH   -  2010.00
 DJ5210  ______________________________________________________________________
 DJ5210  GEOID HEIGHT    -        -33.007 (meters)                     GEOID18
 DJ5210  NAD 83(2011) X  -  1,149,299.241 (meters)                     COMP
 DJ5210  NAD 83(2011) Y  - -4,827,708.354 (meters)                     COMP
 DJ5210  NAD 83(2011) Z  -  3,993,217.439 (meters)                     COMP
 DJ5210
 DJ5210  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ5210  Standards:
 DJ5210         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ5210            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ5210  -------------------------------------------------------------------
 DJ5210  NETWORK    0.07   0.10           0.03   0.02   0.05     -0.07881900
 DJ5210  -------------------------------------------------------------------
 DJ5210
 DJ5210.The coordinates were established by GPS observations
 DJ5210.and adjusted by the National Geodetic Survey in April 2025.
 DJ5210
 DJ5210.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ5210.been affixed to the stable North American Tectonic Plate. 
 DJ5210
 DJ5210.The coordinates are valid at the epoch date displayed above
 DJ5210.which is a decimal equivalence of Year/Month/Day.
 DJ5210
 DJ5210.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DJ5210.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DJ5210.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DJ5210.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DJ5210.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DJ5210.published epoch of 2010.00.
 DJ5210
 DJ5210.Additional information on MYCS is available at:
 DJ5210.https://geodesy.noaa.gov/CORS/index.shtml
 DJ5210
 DJ5210.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ5210.GEOID18 height accuracy estimate available here.
 DJ5210
 DJ5210.The PID for the CORS L1 Phase Center is DJ5211.
 DJ5210
 DJ5210.Click photographs - Photos may exist for this station.
 DJ5210
 DJ5210.The XYZ, and position/ellipsoidal ht. are equivalent.
 DJ5210
 DJ5210.The ellipsoidal height was determined by GPS observations
 DJ5210.and is referenced to NAD 83.
 DJ5210
 DJ5210. The following values were computed from the NAD 83(2011) position.
 DJ5210
 DJ5210;                    North         East     Units Scale Factor Converg.
 DJ5210;SPC MD       -   149,219.711   433,843.131   MT  0.99995259   +0 14 42.9
 DJ5210;SPC MD       -   489,565.00  1,423,367.01   sFT  0.99995259   +0 14 42.9
 DJ5210;UTM  18      - 4,319,149.076   360,669.009   MT  0.99983904   -1 00 47.2
 DJ5210
 DJ5210!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ5210!SPC MD       -   0.99999660  x   0.99995259  =   0.99994919
 DJ5210!UTM  18      -   0.99999660  x   0.99983904  =   0.99983564
 DJ5210
 DJ5210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6066919149(NAD 83)
 DJ5210
 DJ5210                          SUPERSEDED SURVEY CONTROL
 DJ5210
 DJ5210  NAD 83(2011)-  39 00 37.00436(N)    076 36 33.28044(W) AD(2010.00) c
 DJ5210  ELLIP H (06/??/19)   21.695  (m)                       GP(2010.00) c c
 DJ5210  NAD 83(2011)-  39 00 37.00451(N)    076 36 33.28008(W) AD(2010.00) c
 DJ5210  NAD 83(2011)-  39 00 37.00438(N)    076 36 33.28038(W) AD(2010.00) c
 DJ5210  ELLIP H (08/??/11)   21.695  (m)                       GP(2010.00) c c
 DJ5210  NAD 83(CORS)-  39 00 37.00441(N)    076 36 33.28079(W) AD(2002.00) c
 DJ5210  ELLIP H (11/??/07)   21.706  (m)                       GP(2002.00) c c
 DJ5210
 DJ5210.Superseded values are not recommended for survey control.
 DJ5210
 DJ5210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ5210.See file dsdata.pdf to determine how the superseded data were derived.
 DJ5210
 DJ5210_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 DJ5210
 DJ5210                          STATION DESCRIPTION
 DJ5210
 DJ5210'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 DJ5210'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 DJ5210'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 DJ5210'AND LOG FILES ACCESSIBLE AT:
 DJ5210'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK7737 ***********************************************************************
 DK7737  CORS        -  This is a GPS Continuously Operating Reference Station.
 DK7737  DESIGNATION -  ANNAPOLIS 6 CORS ARP
 DK7737  CORS_ID     -  ANP6
 DK7737  PID         -  DK7737
 DK7737  STATE/COUNTY-  MD/ANNE ARUNDEL
 DK7737  COUNTRY     -  US
 DK7737  USGS QUAD   -  ROUND BAY (2016)
 DK7737
 DK7737                         *CURRENT SURVEY CONTROL
 DK7737  ______________________________________________________________________
 DK7737* NAD 83(2011) POSITION- 39 00 37.83698(N) 076 36 32.70545(W)   ADJUSTED
 DK7737* NAD 83(2011) ELLIP HT-    22.852 (meters)        (04/??/25)   ADJUSTED
 DK7737* NAD 83(2011) EPOCH   -  2010.00
 DK7737  ______________________________________________________________________
 DK7737  GEOID HEIGHT    -        -33.007 (meters)                     GEOID18
 DK7737  NAD 83(2011) X  -  1,149,309.163 (meters)                     COMP
 DK7737  NAD 83(2011) Y  - -4,827,690.296 (meters)                     COMP
 DK7737  NAD 83(2011) Z  -  3,993,238.117 (meters)                     COMP
 DK7737
 DK7737  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DK7737  Standards:
 DK7737         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DK7737            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DK7737  -------------------------------------------------------------------
 DK7737  NETWORK    0.03   0.04           0.01   0.01   0.02     -0.12812400
 DK7737  -------------------------------------------------------------------
 DK7737
 DK7737.The coordinates were established by GPS observations
 DK7737.and adjusted by the National Geodetic Survey in April 2025.
 DK7737
 DK7737.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DK7737.been affixed to the stable North American Tectonic Plate. 
 DK7737
 DK7737.The coordinates are valid at the epoch date displayed above
 DK7737.which is a decimal equivalence of Year/Month/Day.
 DK7737
 DK7737.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DK7737.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DK7737.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DK7737.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DK7737.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DK7737.published epoch of 2010.00.
 DK7737
 DK7737.Additional information on MYCS is available at:
 DK7737.https://geodesy.noaa.gov/CORS/index.shtml
 DK7737
 DK7737.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK7737.GEOID18 height accuracy estimate available here.
 DK7737
 DK7737.The PID for the CORS L1 Phase Center is DK7738.
 DK7737
 DK7737.Click photographs - Photos may exist for this station.
 DK7737
 DK7737.The XYZ, and position/ellipsoidal ht. are equivalent.
 DK7737
 DK7737.The ellipsoidal height was determined by GPS observations
 DK7737.and is referenced to NAD 83.
 DK7737
 DK7737. The following values were computed from the NAD 83(2011) position.
 DK7737
 DK7737;                    North         East     Units Scale Factor Converg.
 DK7737;SPC MD       -   149,245.447   433,856.855   MT  0.99995260   +0 14 43.3
 DK7737;SPC MD       -   489,649.44  1,423,412.03   sFT  0.99995260   +0 14 43.3
 DK7737;UTM  18      - 4,319,174.502   360,683.294   MT  0.99983900   -1 00 46.9
 DK7737
 DK7737!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DK7737!SPC MD       -   0.99999641  x   0.99995260  =   0.99994901
 DK7737!UTM  18      -   0.99999641  x   0.99983900  =   0.99983542
 DK7737
 DK7737_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6068319174(NAD 83)
 DK7737
 DK7737                          SUPERSEDED SURVEY CONTROL
 DK7737
 DK7737  NAD 83(2011)-  39 00 37.83708(N)    076 36 32.70541(W) AD(2010.00) c
 DK7737  ELLIP H (06/??/19)   22.851  (m)                       GP(2010.00) c c
 DK7737  NAD 83(2011)-  39 00 37.83709(N)    076 36 32.70535(W) AD(2010.00) c
 DK7737  ELLIP H (08/??/11)   22.851  (m)                       GP(2010.00) c c
 DK7737  NAD 83(CORS)-  39 00 37.83732(N)    076 36 32.70594(W) AD(2002.00) c
 DK7737  ELLIP H (12/??/08)   22.854  (m)                       GP(2002.00) c c
 DK7737
 DK7737.Superseded values are not recommended for survey control.
 DK7737
 DK7737.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DK7737.See file dsdata.pdf to determine how the superseded data were derived.
 DK7737
 DK7737_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 DK7737
 DK7737                          STATION DESCRIPTION
 DK7737
 DK7737'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 DK7737'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 DK7737'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 DK7737'AND LOG FILES ACCESSIBLE AT:
 DK7737'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6343 ***********************************************************************
 HV6343  DESIGNATION -  ANNAPOLIS ACAD GRAD SCH ROOF
 HV6343  PID         -  HV6343
 HV6343  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6343  COUNTRY     -  US
 HV6343  USGS QUAD   -  ANNAPOLIS (2016)
 HV6343
 HV6343                         *CURRENT SURVEY CONTROL
 HV6343  ______________________________________________________________________
 HV6343* NAD 83(1991) POSITION- 38 59 17.75248(N) 076 29 47.87921(W)   ADJUSTED
 HV6343  ______________________________________________________________________
 HV6343  GEOID HEIGHT    -        -33.316 (meters)                     GEOID18
 HV6343  LAPLACE CORR    -         -4.03  (seconds)                    DEFLEC18
 HV6343  HORZ ORDER      -  THIRD
 HV6343
 HV6343.The horizontal coordinates were established by classical geodetic methods
 HV6343.and adjusted by the National Geodetic Survey in January 1992.
 HV6343
 HV6343.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6343.GEOID18 height accuracy estimate available here.
 HV6343
 HV6343.Click photographs - Photos may exist for this station.
 HV6343
 HV6343.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6343
 HV6343. The following values were computed from the NAD 83(1991) position.
 HV6343
 HV6343;                    North         East     Units Scale Factor Converg.
 HV6343;SPC MD       -   146,823.691   443,609.741   MT  0.99995177   +0 18 57.3
 HV6343;SPC MD       -   481,704.06  1,455,409.63   sFT  0.99995177   +0 18 57.3
 HV6343;UTM  18      - 4,316,539.547   370,379.404   MT  0.99980689   -0 56 30.3
 HV6343
 HV6343_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7037916539(NAD 83)
 HV6343
 HV6343                          SUPERSEDED SURVEY CONTROL
 HV6343
 HV6343  NAD 83(1986)-  38 59 17.74869(N)    076 29 47.89056(W) AD(       ) 3
 HV6343  NAD 27      -  38 59 17.35000(N)    076 29 49.03000(W) AD(       ) 3
 HV6343
 HV6343.Superseded values are not recommended for survey control.
 HV6343
 HV6343.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6343.See file dsdata.pdf to determine how the superseded data were derived.
 HV6343
 HV6343_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6343+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2005
 HV6343
 HV6343  HISTORY     - Date     Condition        Report By
 HV6343  HISTORY     - 1932     MONUMENTED       CGS
 HV6343  HISTORY     - 20010331 GOOD             NGS
 HV6343  HISTORY     - 20050718 GOOD             USPSQD
 HV6343
 HV6343                          STATION DESCRIPTION
 HV6343
 HV6343'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6343'CENTER PEAK OF ROOF OF POST GRADUATE SCHOOL, NAVAL ACADEMY,
 HV6343'LOCATED AT THE SW CORNER OF THE NAVAL RESERVATION ON THE MAIN ROAD
 HV6343'LEADING TO COUNTY BRIDGE.  THIS IS THE HIGHEST POINT ON BUILDING.
 HV6343
 HV6343                          STATION RECOVERY (2001)
 HV6343
 HV6343'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6343'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6343
 HV6343                          STATION RECOVERY (2005)
 HV6343
 HV6343'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6343'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6376 ***********************************************************************
 HV6376  DESIGNATION -  ANNAPOLIS ARMORY SE CORNER
 HV6376  PID         -  HV6376
 HV6376  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6376  COUNTRY     -  US
 HV6376  USGS QUAD   -  ANNAPOLIS (2016)
 HV6376
 HV6376                         *CURRENT SURVEY CONTROL
 HV6376  ______________________________________________________________________
 HV6376* NAD 83(1991) POSITION- 38 58 46.54969(N) 076 29 01.25133(W)   ADJUSTED
 HV6376  ______________________________________________________________________
 HV6376  GEOID HEIGHT    -        -33.355 (meters)                     GEOID18
 HV6376  LAPLACE CORR    -         -3.71  (seconds)                    DEFLEC18
 HV6376  HORZ ORDER      -  THIRD
 HV6376
 HV6376.The horizontal coordinates were established by classical geodetic methods
 HV6376.and adjusted by the National Geodetic Survey in January 1992.
 HV6376
 HV6376.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6376.GEOID18 height accuracy estimate available here.
 HV6376
 HV6376.Click photographs - Photos may exist for this station.
 HV6376
 HV6376.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6376
 HV6376. The following values were computed from the NAD 83(1991) position.
 HV6376
 HV6376;                    North         East     Units Scale Factor Converg.
 HV6376;SPC MD       -   145,867.803   444,737.298   MT  0.99995148   +0 19 26.6
 HV6376;SPC MD       -   478,567.95  1,459,108.95   sFT  0.99995148   +0 19 26.6
 HV6376;UTM  18      - 4,315,559.286   371,485.548   MT  0.99980337   -0 56 00.3
 HV6376
 HV6376_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7148515559(NAD 83)
 HV6376
 HV6376                          SUPERSEDED SURVEY CONTROL
 HV6376
 HV6376  NAD 83(1986)-  38 58 46.54590(N)    076 29 01.26267(W) AD(       ) 3
 HV6376  NAD 27      -  38 58 46.14400(N)    076 29 02.39900(W) AD(       ) 3
 HV6376  USSD        -  38 58 46.50500(N)    076 29 02.22700(W) AD(       ) 3
 HV6376
 HV6376.Superseded values are not recommended for survey control.
 HV6376
 HV6376.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6376.See file dsdata.pdf to determine how the superseded data were derived.
 HV6376
 HV6376
 HV6376  HISTORY     - Date     Condition        Report By
 HV6376  HISTORY     - 1910     MONUMENTED       CGS
 HV6376  HISTORY     - 1960     GOOD             CGS
 HV6376
 HV6376                          STATION DESCRIPTION
 HV6376
 HV6376'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6376'THE STATION WAS RECOVERED IN GOOD CONDITION.  THERE IS NO PREVIOUS
 HV6376'DESCRIPTION.  THE POINT USED WAS PROBABLY THE EDGE OF THE
 HV6376'SOUTHEAST CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6383 ***********************************************************************
 HV6383  DESIGNATION -  ANNAPOLIS CLOCK TOWER
 HV6383  PID         -  HV6383
 HV6383  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6383  COUNTRY     -  US
 HV6383  USGS QUAD   -  ANNAPOLIS (2016)
 HV6383
 HV6383                         *CURRENT SURVEY CONTROL
 HV6383  ______________________________________________________________________
 HV6383* NAD 83(1991) POSITION- 38 59 02.05943(N) 076 29 12.38614(W)   ADJUSTED
 HV6383  ______________________________________________________________________
 HV6383  GEOID HEIGHT    -        -33.343 (meters)                     GEOID18
 HV6383  LAPLACE CORR    -         -3.79  (seconds)                    DEFLEC18
 HV6383  HORZ ORDER      -  THIRD
 HV6383
 HV6383.The horizontal coordinates were established by classical geodetic methods
 HV6383.and adjusted by the National Geodetic Survey in January 1992.
 HV6383
 HV6383.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6383.GEOID18 height accuracy estimate available here.
 HV6383
 HV6383.Click photographs - Photos may exist for this station.
 HV6383
 HV6383.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6383
 HV6383. The following values were computed from the NAD 83(1991) position.
 HV6383
 HV6383;                    North         East     Units Scale Factor Converg.
 HV6383;SPC MD       -   146,344.543   444,466.614   MT  0.99995162   +0 19 19.6
 HV6383;SPC MD       -   480,132.05  1,458,220.88   sFT  0.99995162   +0 19 19.6
 HV6383;UTM  18      - 4,316,041.780   371,225.430   MT  0.99980419   -0 56 07.7
 HV6383
 HV6383_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7122516041(NAD 83)
 HV6383
 HV6383                          SUPERSEDED SURVEY CONTROL
 HV6383
 HV6383  NAD 83(1986)-  38 59 02.05565(N)    076 29 12.39749(W) AD(       ) 3
 HV6383  NAD 27      -  38 59 01.65300(N)    076 29 13.53200(W) AD(       ) 3
 HV6383
 HV6383.Superseded values are not recommended for survey control.
 HV6383
 HV6383.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6383.See file dsdata.pdf to determine how the superseded data were derived.
 HV6383
 HV6383_MARKER: 55 = TOWER
 HV6383_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6383+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 HV6383
 HV6383  HISTORY     - Date     Condition        Report By
 HV6383  HISTORY     - 1910     FIRST OBSERVED   CGS
 HV6383  HISTORY     - 1960     GOOD             CGS
 HV6383  HISTORY     - 20010331 GOOD             NGS
 HV6383  HISTORY     - 20031002 GOOD             USPSQD
 HV6383  HISTORY     - 20050718 GOOD             USPSQD
 HV6383  HISTORY     - 20100314 GOOD             GEOCAC
 HV6383
 HV6383                          STATION DESCRIPTION
 HV6383
 HV6383'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6383'THE STATION WAS RECOVERED IN GOOD CONDITION.  THERE IS NO PREVIOUS
 HV6383'DESCRIPTION OF THIS STATION.  THE POINT RECOVERED WAS THE SPINDLE
 HV6383'ON TOP OF THE TOWER.
 HV6383
 HV6383                          STATION RECOVERY (2001)
 HV6383
 HV6383'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6383'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6383
 HV6383                          STATION RECOVERY (2003)
 HV6383
 HV6383'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6383'RECOVERED IN GOOD CONDITION.
 HV6383
 HV6383                          STATION RECOVERY (2005)
 HV6383
 HV6383'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6383'RECOVERED IN GOOD CONDITION.
 HV6383
 HV6383                          STATION RECOVERY (2010)
 HV6383
 HV6383'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV6383'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6389 ***********************************************************************
 HV6389  DESIGNATION -  ANNAPOLIS EXPER STA OUT VENT
 HV6389  PID         -  HV6389
 HV6389  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6389  COUNTRY     -  US
 HV6389  USGS QUAD   -  ANNAPOLIS (2016)
 HV6389
 HV6389                         *CURRENT SURVEY CONTROL
 HV6389  ______________________________________________________________________
 HV6389* NAD 83(1991) POSITION- 38 59 01.56211(N) 076 28 15.94135(W)   ADJUSTED
 HV6389  ______________________________________________________________________
 HV6389  GEOID HEIGHT    -        -33.372 (meters)                     GEOID18
 HV6389  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 HV6389  HORZ ORDER      -  THIRD
 HV6389
 HV6389.The horizontal coordinates were established by classical geodetic methods
 HV6389.and adjusted by the National Geodetic Survey in January 1992.
 HV6389
 HV6389.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6389.GEOID18 height accuracy estimate available here.
 HV6389
 HV6389.Click photographs - Photos may exist for this station.
 HV6389
 HV6389.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6389
 HV6389. The following values were computed from the NAD 83(1991) position.
 HV6389
 HV6389;                    North         East     Units Scale Factor Converg.
 HV6389;SPC MD       -   146,336.962   445,825.147   MT  0.99995162   +0 19 55.1
 HV6389;SPC MD       -   480,107.18  1,462,678.00   sFT  0.99995162   +0 19 55.1
 HV6389;UTM  18      - 4,316,004.391   372,583.267   MT  0.99979991   -0 55 32.1
 HV6389
 HV6389_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7258316004(NAD 83)
 HV6389
 HV6389                          SUPERSEDED SURVEY CONTROL
 HV6389
 HV6389  NAD 83(1986)-  38 59 01.55828(N)    076 28 15.95276(W) AD(       ) 3
 HV6389  NAD 27      -  38 59 01.15500(N)    076 28 17.09500(W) AD(       ) 3
 HV6389  USSD        -  38 59 01.51600(N)    076 28 16.92000(W) AD(       ) 3
 HV6389
 HV6389.Superseded values are not recommended for survey control.
 HV6389
 HV6389.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6389.See file dsdata.pdf to determine how the superseded data were derived.
 HV6389
 HV6389_MARKER: 94 = ROOFTOP VENTILATOR
 HV6389_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6389+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2005
 HV6389
 HV6389  HISTORY     - Date     Condition        Report By
 HV6389  HISTORY     - 1910     FIRST OBSERVED   CGS
 HV6389  HISTORY     - 1956     GOOD             CGS
 HV6389  HISTORY     - 1961     GOOD             CGS
 HV6389  HISTORY     - 20010331 GOOD             NGS
 HV6389  HISTORY     - 20050718 GOOD             USPSQD
 HV6389
 HV6389                          STATION DESCRIPTION
 HV6389
 HV6389'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (ELJ)
 HV6389'THE POINT RECOVERED WAS THE OUTER (S) VENT OF THE BUILDING LYING
 HV6389'ALONG THE SE SIDE OF WORTHINGTON BASIN AT THE NAVAL ENGINEERING
 HV6389'EXPERIMENT STATION, ANNAPOLIS, MARYLAND.
 HV6389
 HV6389                          STATION RECOVERY (1961)
 HV6389
 HV6389'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 HV6389'STATION WAS RECOVERED IN GOOD CONDITION.  GUARDS IN THE AREA STATED
 HV6389'THE VENT IS IN ITS ORIGINAL ORDER.
 HV6389
 HV6389                          STATION RECOVERY (2001)
 HV6389
 HV6389'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6389'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6389
 HV6389                          STATION RECOVERY (2005)
 HV6389
 HV6389'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6389'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6370 ***********************************************************************
 HV6370  DESIGNATION -  ANNAPOLIS GYMNASIUM NE CORNER
 HV6370  PID         -  HV6370
 HV6370  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6370  COUNTRY     -  US
 HV6370  USGS QUAD   -  ANNAPOLIS (2016)
 HV6370
 HV6370                         *CURRENT SURVEY CONTROL
 HV6370  ______________________________________________________________________
 HV6370* NAD 83(1991) POSITION- 38 58 56.22607(N) 076 28 50.88506(W)   ADJUSTED
 HV6370  ______________________________________________________________________
 HV6370  GEOID HEIGHT    -        -33.357 (meters)                     GEOID18
 HV6370  LAPLACE CORR    -         -3.61  (seconds)                    DEFLEC18
 HV6370  HORZ ORDER      -  THIRD
 HV6370
 HV6370.The horizontal coordinates were established by classical geodetic methods
 HV6370.and adjusted by the National Geodetic Survey in January 1992.
 HV6370
 HV6370.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6370.GEOID18 height accuracy estimate available here.
 HV6370
 HV6370.Click photographs - Photos may exist for this station.
 HV6370
 HV6370.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6370
 HV6370. The following values were computed from the NAD 83(1991) position.
 HV6370
 HV6370;                    North         East     Units Scale Factor Converg.
 HV6370;SPC MD       -   146,167.594   444,985.099   MT  0.99995157   +0 19 33.1
 HV6370;SPC MD       -   479,551.51  1,459,921.95   sFT  0.99995157   +0 19 33.1
 HV6370;UTM  18      - 4,315,853.523   371,739.831   MT  0.99980257   -0 55 54.0
 HV6370
 HV6370_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7173915853(NAD 83)
 HV6370
 HV6370                          SUPERSEDED SURVEY CONTROL
 HV6370
 HV6370  NAD 83(1986)-  38 58 56.22229(N)    076 28 50.89642(W) AD(       ) 3
 HV6370  NAD 27      -  38 58 55.82400(N)    076 28 52.03300(W) AD(       ) 3
 HV6370  USSD        -  38 58 56.18500(N)    076 28 51.86000(W) AD(       ) 3
 HV6370
 HV6370.Superseded values are not recommended for survey control.
 HV6370
 HV6370.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6370.See file dsdata.pdf to determine how the superseded data were derived.
 HV6370
 HV6370_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6370+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 HV6370
 HV6370  HISTORY     - Date     Condition        Report By
 HV6370  HISTORY     - 1910     MONUMENTED       CGS
 HV6370  HISTORY     - 1960     GOOD             CGS
 HV6370  HISTORY     - 20010331 GOOD             NGS
 HV6370  HISTORY     - 20051215 GOOD             USPSQD
 HV6370  HISTORY     - 20100314 GOOD             GEOCAC
 HV6370
 HV6370                          STATION DESCRIPTION
 HV6370
 HV6370'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6370'THE STATION WAS RECOVERED IN GOOD CONDITION.  THERE IS NO
 HV6370'PREVIOUS DESCRIPTION.  THE POINT RECOVERED WAS THE EDGE OF THE
 HV6370'BUILDING AT THE NORTHEAST CORNER.
 HV6370
 HV6370                          STATION RECOVERY (2001)
 HV6370
 HV6370'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6370'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6370
 HV6370                          STATION RECOVERY (2005)
 HV6370
 HV6370'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6370'RECOVERED IN GOOD CONDITION.
 HV6370
 HV6370                          STATION RECOVERY (2010)
 HV6370
 HV6370'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV6370'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5801 ***********************************************************************
 JV5801  DESIGNATION -  ANNAPOLIS HILL
 JV5801  PID         -  JV5801
 JV5801  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5801  COUNTRY     -  US
 JV5801  USGS QUAD   -  ODENTON (2016)
 JV5801
 JV5801                         *CURRENT SURVEY CONTROL
 JV5801  ______________________________________________________________________
 JV5801* NAD 83(1991) POSITION- 39 06 56.07886(N) 076 43 39.24262(W)   ADJUSTED
 JV5801* NAVD 88 ORTHO HEIGHT -    76.    (meters)      249.    (feet) SCALED
 JV5801  ______________________________________________________________________
 JV5801  GEOID HEIGHT    -        -32.576 (meters)                     GEOID18
 JV5801  LAPLACE CORR    -         -5.71  (seconds)                    DEFLEC18
 JV5801  HORZ ORDER      -  SECOND
 JV5801
 JV5801.The horizontal coordinates were established by classical geodetic methods
 JV5801.and adjusted by the National Geodetic Survey in January 1992.
 JV5801
 JV5801.The orthometric height was scaled from a topographic map.
 JV5801
 JV5801.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5801.GEOID18 height accuracy estimate available here.
 JV5801
 JV5801.Click photographs - Photos may exist for this station.
 JV5801
 JV5801.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5801
 JV5801. The following values were computed from the NAD 83(1991) position.
 JV5801
 JV5801;                    North         East     Units Scale Factor Converg.
 JV5801;SPC MD       -   160,871.802   423,560.404   MT  0.99995858   +0 10 15.6
 JV5801;SPC MD       -   527,793.57  1,389,631.09   sFT  0.99995858   +0 10 15.6
 JV5801;UTM  18      - 4,331,023.236   350,645.917   MT  0.99987467   -1 05 24.4
 JV5801
 JV5801!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5801!SPC MD       -   0.99999322  x   0.99995858  =   0.99995180
 JV5801!UTM  18      -   0.99999322  x   0.99987467  =   0.99986789
 JV5801
 JV5801:                Primary Azimuth Mark                     Grid Az
 JV5801:SPC MD       -  FORT MEADE LAUNDRY TANK                  176 50 58.3
 JV5801:UTM  18      -  FORT MEADE LAUNDRY TANK                  178 06 38.3
 JV5801
 JV5801_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5064531023(NAD 83)
 JV5801
 JV5801|---------------------------------------------------------------------|
 JV5801| PID    Reference Object                     Distance      Geod. Az  |
 JV5801|                                                           dddmmss.s |
 JV5801| CA9885 ANNAPOLIS HILL RM 1                  11.103 METERS 00734     |
 JV5801| CA9673 MEADE RM 2                           53.387 METERS 01703     |
 JV5801| JV5808 MEADE                                62.330 METERS 04433     |
 JV5801| CA9886 ANNAPOLIS HILL RM 2                  13.379 METERS 13518     |
 JV5801| JV5803 FORT MEADE LAUNDRY TANK             APPROX. 2.7 KM 1770113.9 |
 JV5801| JV5809 FORT MEADE LAUNDRY STACK            APPROX. 2.8 KM 1774104.2 |
 JV5801| JV5892 FORT MEADE SIMONDS ST TANK          APPROX. 3.0 KM 2222613.7 |
 JV5801| JV5807 FORT MEADE HEATING PLANT STACK      APPROX. 1.1 KM 3200434.2 |
 JV5801| JV5834 FORT MEADE BIG TANK                 APPROX. 1.7 KM 3251052.5 |
 JV5801|---------------------------------------------------------------------|
 JV5801
 JV5801                          SUPERSEDED SURVEY CONTROL
 JV5801
 JV5801  NAD 83(1986)-  39 06 56.07625(N)    076 43 39.25253(W) AD(       ) 2
 JV5801  NAD 27      -  39 06 55.68760(N)    076 43 40.36490(W) AD(       ) 2
 JV5801
 JV5801.Superseded values are not recommended for survey control.
 JV5801
 JV5801.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5801.See file dsdata.pdf to determine how the superseded data were derived.
 JV5801
 JV5801_MARKER: DS = TRIANGULATION STATION DISK
 JV5801_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5801_STAMPING: ANNAPOLIS HILL 1952
 JV5801_MARK LOGO: CGS
 JV5801_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5801+STABILITY: SURFACE MOTION
 JV5801
 JV5801  HISTORY     - Date     Condition        Report By
 JV5801  HISTORY     - 1952     MONUMENTED       CGS
 JV5801  HISTORY     - 1957     GOOD             CGS
 JV5801  HISTORY     - 20090214 GOOD             GEOCAC
 JV5801
 JV5801                          STATION DESCRIPTION
 JV5801
 JV5801'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (IWS)
 JV5801'THE STATION IS LOCATED ON THE FORT MEADE MILITARY RESERVATION, ON
 JV5801'THE TOP OF ANNAPOLIS HILL WHICH IS ON THE EAST SIDE OF ANNAPOLIS
 JV5801'ROAD.  THE STATION IS ABOUT 175 FEET SOUTH OF A LOW, BLACK STORAGE
 JV5801'TANK, 175 FEET SOUTHEAST OF A SMALL BRICK BUILDING, 70 FEET NORTH
 JV5801'OF A 12-INCH PINE TREE, 21 FEET WEST OF THE WEST EDGE OF A CEMETERY
 JV5801'LOT, AND 3 FEET NORTH OF A WHITE WITNESS POST.  THE MARK
 JV5801'PROJECTS 3 INCHES ABOVE THE GROUND, AND IS STAMPED ANNAPOLIS HILL
 JV5801'1952.
 JV5801'
 JV5801'REFERENCE MARK NO. 1 IS NORTH OF THE STATION, 45 FEET WEST OF A
 JV5801'20-INCH OAK TREE, 50 FEET SOUTH OF THE NORTHWEST CORNER OF A
 JV5801'CEMETERY LOT, AND 2 FEET WEST OF THE WEST EDGE OF THE CEMETERY
 JV5801'LOT.  THE MARK PROJECTS 3 INCHES ABOVE THE GROUND, AND IS STAMPED
 JV5801'ANNAPOLIS HILL NO 1 1952.
 JV5801'
 JV5801'REFERENCE MARK NO.2 IS SOUTHEAST OF THE STATION, 45 FEET NORTHEAST
 JV5801'OF A 12-INCH PINE TREE, 25 FEET NORTHWEST OF THE SOUTHWEST CORNER
 JV5801'OF A CEMETERY LOT, AND 2 FEET WEST OF THE WEST EDGE OF THE CEMETERY
 JV5801'LOT.  THE MARK PROJECTS 6 INCHES ABOVE THE GROUND, AND IS STAMPED
 JV5801'ANNAPOLIS HILL NO 2 1952.
 JV5801'
 JV5801'TO REACH THE STATION FROM THE INTERSECTION OF ANNAPOLIS ROAD AND
 JV5801'REECE ROAD ON THE FORT MEADE MILITARY RESERVATION, GO EAST 1 BLOCK
 JV5801'ON REECE ROAD TO PATTON DRIVE, TURN LEFT ON PATTON DRIVE AND GO 0.2
 JV5801'MILE TO THE TOP OF THE HILL AND THE STATION SITE ON THE LEFT.
 JV5801
 JV5801                          STATION RECOVERY (1957)
 JV5801
 JV5801'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5801'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO BE
 JV5801'IN GOOD CONDITION.  THE DISTANCE TO THE REFERENCE MARKS CHECKED THE
 JV5801'ORIGINAL DESCRIPTION WHICH IS ADEQUATE.
 JV5801'
 JV5801'1957 OBSERVATIONS TAKEN FROM A TRIPOD.
 JV5801
 JV5801                          STATION RECOVERY (2009)
 JV5801
 JV5801'RECOVERY NOTE BY GEOCACHING 2009 (EJK)
 JV5801'STATION AND BOTH REFERENCE MARKS RECOVERED IN GOOD CONDITION.
 JV5801'
 JV5801'NOTE - THE FENCE REFERENCED BY MEASUREMENTS IN THE 1952 DESCRIPTION IS
 JV5801'THE SMALLER FENCE AROUND THE CEMETERY AND NOT THE LARGER FENCE THAT
 JV5801'NOW PARALLELS THE W SIDE OF THE CEMETERY.
 JV5801'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6380 ***********************************************************************
 HV6380  DESIGNATION -  ANNAPOLIS MIDSHIP QTRS S CUP
 HV6380  PID         -  HV6380
 HV6380  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6380  COUNTRY     -  US
 HV6380  USGS QUAD   -  ANNAPOLIS (2016)
 HV6380
 HV6380                         *CURRENT SURVEY CONTROL
 HV6380  ______________________________________________________________________
 HV6380* NAD 83(1991) POSITION- 38 58 52.78528(N) 076 29 01.82390(W)   ADJUSTED
 HV6380  ______________________________________________________________________
 HV6380  GEOID HEIGHT    -        -33.352 (meters)                     GEOID18
 HV6380  LAPLACE CORR    -         -3.71  (seconds)                    DEFLEC18
 HV6380  HORZ ORDER      -  THIRD
 HV6380
 HV6380.The horizontal coordinates were established by classical geodetic methods
 HV6380.and adjusted by the National Geodetic Survey in January 1992.
 HV6380
 HV6380.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6380.GEOID18 height accuracy estimate available here.
 HV6380
 HV6380.Click photographs - Photos may exist for this station.
 HV6380
 HV6380.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6380
 HV6380. The following values were computed from the NAD 83(1991) position.
 HV6380
 HV6380;                    North         East     Units Scale Factor Converg.
 HV6380;SPC MD       -   146,060.003   444,722.430   MT  0.99995154   +0 19 26.3
 HV6380;SPC MD       -   479,198.53  1,459,060.17   sFT  0.99995154   +0 19 26.3
 HV6380;UTM  18      - 4,315,751.737   371,474.903   MT  0.99980340   -0 56 00.8
 HV6380
 HV6380_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7147415751(NAD 83)
 HV6380
 HV6380                          SUPERSEDED SURVEY CONTROL
 HV6380
 HV6380  NAD 83(1986)-  38 58 52.78150(N)    076 29 01.83526(W) AD(       ) 3
 HV6380  NAD 27      -  38 58 52.38100(N)    076 29 02.97500(W) AD(       ) 3
 HV6380  USSD        -  38 58 52.74200(N)    076 29 02.80100(W) AD(       ) 3
 HV6380
 HV6380.Superseded values are not recommended for survey control.
 HV6380
 HV6380.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6380.See file dsdata.pdf to determine how the superseded data were derived.
 HV6380
 HV6380_MARKER: 86 = CUPOLA
 HV6380_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6380+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 HV6380
 HV6380  HISTORY     - Date     Condition        Report By
 HV6380  HISTORY     - 1910     FIRST OBSERVED   CGS
 HV6380  HISTORY     - 1960     GOOD             CGS
 HV6380  HISTORY     - 20010331 GOOD             NGS
 HV6380  HISTORY     - 20031002 GOOD             USPSQD
 HV6380  HISTORY     - 20050718 GOOD             USPSQD
 HV6380  HISTORY     - 20100314 GOOD             GEOCAC
 HV6380
 HV6380                          STATION DESCRIPTION
 HV6380
 HV6380'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6380'THE STATION WAS RECOVERED IN GOOD CONDITION.  THERE IS NO PREVIOUS
 HV6380'DESCRIPTION.  THE STATION IS THE SOUTHERLY OF TWO CUPOLAS,
 HV6380'RESEMBLING MINARETS ON TOP OF BANCROFT HALL WHICH IS ALSO THE
 HV6380'MIDSHIPMENS QUARTERS.  BOTH OF THE CUPOLAS ARE PAINTED GREEN.
 HV6380
 HV6380                          STATION RECOVERY (2001)
 HV6380
 HV6380'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6380'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6380
 HV6380                          STATION RECOVERY (2003)
 HV6380
 HV6380'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6380'RECOVERED IN GOOD CONDITION.
 HV6380
 HV6380                          STATION RECOVERY (2005)
 HV6380
 HV6380'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6380'RECOVERED IN GOOD CONDITION.
 HV6380
 HV6380                          STATION RECOVERY (2010)
 HV6380
 HV6380'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV6380'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6395 ***********************************************************************
 HV6395  DESIGNATION -  ANNAPOLIS NAVAL ACAD CHAPEL
 HV6395  PID         -  HV6395
 HV6395  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6395  COUNTRY     -  US
 HV6395  USGS QUAD   -  ANNAPOLIS (2016)
 HV6395
 HV6395                         *CURRENT SURVEY CONTROL
 HV6395  ______________________________________________________________________
 HV6395* NAD 83(1991) POSITION- 38 58 53.61912(N) 076 29 10.98204(W)   ADJUSTED
 HV6395  ______________________________________________________________________
 HV6395  GEOID HEIGHT    -        -33.347 (meters)                     GEOID18
 HV6395  LAPLACE CORR    -         -3.79  (seconds)                    DEFLEC18
 HV6395  HORZ ORDER      -  THIRD
 HV6395
 HV6395.The horizontal coordinates were established by classical geodetic methods
 HV6395.and adjusted by the National Geodetic Survey in January 1992.
 HV6395
 HV6395.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6395.GEOID18 height accuracy estimate available here.
 HV6395
 HV6395.Click photographs - Photos may exist for this station.
 HV6395
 HV6395.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6395
 HV6395. The following values were computed from the NAD 83(1991) position.
 HV6395
 HV6395;                    North         East     Units Scale Factor Converg.
 HV6395;SPC MD       -   146,084.471   444,501.870   MT  0.99995155   +0 19 20.5
 HV6395;SPC MD       -   479,278.80  1,458,336.55   sFT  0.99995155   +0 19 20.5
 HV6395;UTM  18      - 4,315,781.036   371,254.966   MT  0.99980410   -0 56 06.6
 HV6395
 HV6395_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7125415781(NAD 83)
 HV6395
 HV6395                          SUPERSEDED SURVEY CONTROL
 HV6395
 HV6395  NAD 83(1986)-  38 58 53.61531(N)    076 29 10.99339(W) AD(       ) 3
 HV6395  NAD 27      -  38 58 53.21168(N)    076 29 12.13255(W) AD(       ) 3
 HV6395  USSD        -  38 58 53.57800(N)    076 29 11.96500(W) AD(       ) 3
 HV6395
 HV6395.Superseded values are not recommended for survey control.
 HV6395
 HV6395.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6395.See file dsdata.pdf to determine how the superseded data were derived.
 HV6395
 HV6395_MARKER: 87 = DOME
 HV6395_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV6395_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6395+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 HV6395
 HV6395  HISTORY     - Date     Condition        Report By
 HV6395  HISTORY     - 1933     FIRST OBSERVED   CGS
 HV6395  HISTORY     - 1956     GOOD             CGS
 HV6395  HISTORY     - 1960     GOOD             CGS
 HV6395  HISTORY     - 1965     GOOD             CGS
 HV6395  HISTORY     - 1981     GOOD             NOS
 HV6395  HISTORY     - 20010331 GOOD             NGS
 HV6395  HISTORY     - 20050720 GOOD             USPSQD
 HV6395  HISTORY     - 20100314 GOOD             GEOCAC
 HV6395
 HV6395                          STATION DESCRIPTION
 HV6395
 HV6395'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (ELJ)
 HV6395'THE POINT RECOVERED WAS THE CENTER OF THE TOP OF THE NAVAL
 HV6395'ACADEMY CHAPEL DOME.  THIS DOME IS THE LARGEST AND MOST PROMINENT
 HV6395'ONE IN THE VICINITY.
 HV6395
 HV6395                          STATION RECOVERY (1960)
 HV6395
 HV6395'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6395'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE PREVIOUS
 HV6395'DESCRIPTION BY E.L.J. IN 1956 IS COMPLETE AND ADEQUATE WITH THE
 HV6395'FOLLOWING EXCEPTION.  THE SPINDLE ON TOP OF THE DOME IS NOW
 HV6395'PAINTED GOLD.
 HV6395
 HV6395                          STATION RECOVERY (1965)
 HV6395
 HV6395'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (JKW)
 HV6395'STATION RECOVERED IN GOOD CONDITION.  THE RECOVERY BY E.L.J. IN
 HV6395'1956 AND BY G.F.W. IN 1960 ARE ADEQUATE FOR RECOVERY.
 HV6395
 HV6395                          STATION RECOVERY (1981)
 HV6395
 HV6395'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1981 (RHH)
 HV6395'THE STATION WAS RECOVERED AS DESCRIBED.
 HV6395
 HV6395                          STATION RECOVERY (2001)
 HV6395
 HV6395'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6395'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6395
 HV6395                          STATION RECOVERY (2005)
 HV6395
 HV6395'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6395'RECOVERED IN GOOD CONDITION.
 HV6395
 HV6395                          STATION RECOVERY (2010)
 HV6395
 HV6395'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV6395'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6373 ***********************************************************************
 HV6373  DESIGNATION -  ANNAPOLIS NAVAL HOSP CUPOLA
 HV6373  PID         -  HV6373
 HV6373  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6373  COUNTRY     -  US
 HV6373  USGS QUAD   -  ANNAPOLIS (2016)
 HV6373
 HV6373                         *CURRENT SURVEY CONTROL
 HV6373  ______________________________________________________________________
 HV6373* NAD 83(1991) POSITION- 38 59 20.12529(N) 076 29 29.30087(W)   ADJUSTED
 HV6373  ______________________________________________________________________
 HV6373  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 HV6373  LAPLACE CORR    -         -3.88  (seconds)                    DEFLEC18
 HV6373  HORZ ORDER      -  THIRD
 HV6373
 HV6373.The horizontal coordinates were established by classical geodetic methods
 HV6373.and adjusted by the National Geodetic Survey in January 1992.
 HV6373
 HV6373.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6373.GEOID18 height accuracy estimate available here.
 HV6373
 HV6373.Click photographs - Photos may exist for this station.
 HV6373
 HV6373.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6373
 HV6373. The following values were computed from the NAD 83(1991) position.
 HV6373
 HV6373;                    North         East     Units Scale Factor Converg.
 HV6373;SPC MD       -   146,899.336   444,056.427   MT  0.99995179   +0 19 09.0
 HV6373;SPC MD       -   481,952.24  1,456,875.13   sFT  0.99995179   +0 19 09.0
 HV6373;UTM  18      - 4,316,605.360   370,827.578   MT  0.99980546   -0 56 18.7
 HV6373
 HV6373_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7082716605(NAD 83)
 HV6373
 HV6373                          SUPERSEDED SURVEY CONTROL
 HV6373
 HV6373  NAD 83(1986)-  38 59 20.12149(N)    076 29 29.31218(W) AD(       ) 3
 HV6373  NAD 27      -  38 59 19.72100(N)    076 29 30.44900(W) AD(       ) 3
 HV6373  USSD        -  38 59 20.08300(N)    076 29 30.27700(W) AD(       ) 3
 HV6373
 HV6373.Superseded values are not recommended for survey control.
 HV6373
 HV6373.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6373.See file dsdata.pdf to determine how the superseded data were derived.
 HV6373
 HV6373_MARKER: 86 = CUPOLA
 HV6373_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6373+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 HV6373
 HV6373  HISTORY     - Date     Condition        Report By
 HV6373  HISTORY     - 1906     FIRST OBSERVED   CGS
 HV6373  HISTORY     - 1956     GOOD             CGS
 HV6373  HISTORY     - 1961     GOOD             CGS
 HV6373  HISTORY     - 20010331 GOOD             NGS
 HV6373  HISTORY     - 20031002 GOOD             USPSQD
 HV6373  HISTORY     - 20050718 GOOD             USPSQD
 HV6373  HISTORY     - 20100314 GOOD             GEOCAC
 HV6373
 HV6373                          STATION DESCRIPTION
 HV6373
 HV6373'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (ELJ)
 HV6373'THE POINT RECOVERED IS THE CENTER OF THE TOP OF THE SMALL CUPOLA
 HV6373'OF THE NAVAL HOSPITAL BUILDING ON A HILL JUST S OF THE W END OF
 HV6373'THE SEVERN RIVER HIGHWAY BRIDGE AT ANNAPOLIS.
 HV6373
 HV6373                          STATION RECOVERY (1961)
 HV6373
 HV6373'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 HV6373'STATION RECOVERED IN GOOD CONDITION.  THE CUPOLA IS PAINTED GREEN
 HV6373'AND IS CENTERED ON THE ROOF OF THE NAVAL HOSPITAL JUST ABOVE THE
 HV6373'MAIN ENTRANCE.
 HV6373
 HV6373                          STATION RECOVERY (2001)
 HV6373
 HV6373'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6373'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6373
 HV6373                          STATION RECOVERY (2003)
 HV6373
 HV6373'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6373'RECOVERED IN GOOD CONDITION.
 HV6373
 HV6373                          STATION RECOVERY (2005)
 HV6373
 HV6373'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6373'RECOVERED IN GOOD CONDITION.
 HV6373
 HV6373                          STATION RECOVERY (2010)
 HV6373
 HV6373'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV6373'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6379 ***********************************************************************
 HV6379  DESIGNATION -  ANNAPOLIS NAVAL SIGNAL
 HV6379  PID         -  HV6379
 HV6379  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6379  COUNTRY     -  US
 HV6379  USGS QUAD   -  ANNAPOLIS (2016)
 HV6379
 HV6379                         *CURRENT SURVEY CONTROL
 HV6379  ______________________________________________________________________
 HV6379* NAD 83(1991) POSITION- 38 59 13.71490(N) 076 29 20.90793(W)   ADJUSTED
 HV6379  ______________________________________________________________________
 HV6379  GEOID HEIGHT    -        -33.333 (meters)                     GEOID18
 HV6379  LAPLACE CORR    -         -3.83  (seconds)                    DEFLEC18
 HV6379  HORZ ORDER      -  THIRD
 HV6379
 HV6379.The horizontal coordinates were established by classical geodetic methods
 HV6379.and adjusted by the National Geodetic Survey in January 1992.
 HV6379
 HV6379.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6379.GEOID18 height accuracy estimate available here.
 HV6379
 HV6379.Click photographs - Photos may exist for this station.
 HV6379
 HV6379.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6379
 HV6379. The following values were computed from the NAD 83(1991) position.
 HV6379
 HV6379;                    North         East     Units Scale Factor Converg.
 HV6379;SPC MD       -   146,702.796   444,259.510   MT  0.99995173   +0 19 14.3
 HV6379;SPC MD       -   481,307.42  1,457,541.41   sFT  0.99995173   +0 19 14.3
 HV6379;UTM  18      - 4,316,404.439   371,026.269   MT  0.99980483   -0 56 13.3
 HV6379
 HV6379_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7102616404(NAD 83)
 HV6379
 HV6379                          SUPERSEDED SURVEY CONTROL
 HV6379
 HV6379  NAD 83(1986)-  38 59 13.71112(N)    076 29 20.91925(W) AD(       ) 3
 HV6379  NAD 27      -  38 59 13.31000(N)    076 29 22.06000(W) AD(       ) 3
 HV6379  USSD        -  38 59 13.67000(N)    076 29 21.89000(W) AD(       ) 3
 HV6379
 HV6379.Superseded values are not recommended for survey control.
 HV6379
 HV6379.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6379.See file dsdata.pdf to determine how the superseded data were derived.
 HV6379
 HV6379
 HV6379  HISTORY     - Date     Condition        Report By
 HV6379  HISTORY     - 1910     MONUMENTED       CGS
 HV6379  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6379
 HV6379                          STATION DESCRIPTION
 HV6379
 HV6379'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (GFW)
 HV6379'STATION WAS SEARCHED FOR BUT NOT FOUND.  PUBLIC WORKS DEPT. AT
 HV6379'THE NAVAL BASE STATED THEY HAVE NO SIGNAL IN THE AREA NOW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6384 ***********************************************************************
 HV6384  DESIGNATION -  ANNAPOLIS POWERHOUSE NW CORNER
 HV6384  PID         -  HV6384
 HV6384  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6384  COUNTRY     -  US
 HV6384  USGS QUAD   -  ANNAPOLIS (2016)
 HV6384
 HV6384                         *CURRENT SURVEY CONTROL
 HV6384  ______________________________________________________________________
 HV6384* NAD 83(1991) POSITION- 38 59 07.18209(N) 076 29 07.62135(W)   ADJUSTED
 HV6384  ______________________________________________________________________
 HV6384  GEOID HEIGHT    -        -33.343 (meters)                     GEOID18
 HV6384  LAPLACE CORR    -         -3.74  (seconds)                    DEFLEC18
 HV6384  HORZ ORDER      -  THIRD
 HV6384
 HV6384.The horizontal coordinates were established by classical geodetic methods
 HV6384.and adjusted by the National Geodetic Survey in January 1992.
 HV6384
 HV6384.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6384.GEOID18 height accuracy estimate available here.
 HV6384
 HV6384.Click photographs - Photos may exist for this station.
 HV6384
 HV6384.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6384
 HV6384. The following values were computed from the NAD 83(1991) position.
 HV6384
 HV6384;                    North         East     Units Scale Factor Converg.
 HV6384;SPC MD       -   146,503.149   444,580.397   MT  0.99995167   +0 19 22.6
 HV6384;SPC MD       -   480,652.41  1,458,594.19   sFT  0.99995167   +0 19 22.6
 HV6384;UTM  18      - 4,316,197.827   371,342.650   MT  0.99980382   -0 56 04.8
 HV6384
 HV6384_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7134216197(NAD 83)
 HV6384
 HV6384                          SUPERSEDED SURVEY CONTROL
 HV6384
 HV6384  NAD 83(1986)-  38 59 07.17830(N)    076 29 07.63269(W) AD(       ) 3
 HV6384  NAD 27      -  38 59 06.77600(N)    076 29 08.77400(W) AD(       ) 3
 HV6384  USSD        -  38 59 07.13700(N)    076 29 08.60100(W) AD(       ) 3
 HV6384
 HV6384.Superseded values are not recommended for survey control.
 HV6384
 HV6384.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6384.See file dsdata.pdf to determine how the superseded data were derived.
 HV6384
 HV6384
 HV6384  HISTORY     - Date     Condition        Report By
 HV6384  HISTORY     - 1910     MONUMENTED       CGS
 HV6384  HISTORY     - 1960     GOOD             CGS
 HV6384  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV6384
 HV6384                          STATION DESCRIPTION
 HV6384
 HV6384'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6384'THE STATION WAS RECOVERED IN GOOD CONDITION.
 HV6384'
 HV6384'THE POINT RECOVERED WAS THE EDGE OF THE NORTHWEST CORNER.
 HV6384
 HV6384                          STATION RECOVERY (2001)
 HV6384
 HV6384'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6384'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1003 ***********************************************************************
 JV1003  DESIGNATION -  ANNAPOLIS RESET
 JV1003  PID         -  JV1003
 JV1003  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1003  COUNTRY     -  US
 JV1003  USGS QUAD   -  ODENTON (2016)
 JV1003
 JV1003                         *CURRENT SURVEY CONTROL
 JV1003  ______________________________________________________________________
 JV1003* NAD 83(1986) POSITION- 39 06 58.     (N) 076 43 42.     (W)   SCALED
 JV1003* NAVD 88 ORTHO HEIGHT -    78.43  (meters)      257.3   (feet) RESET
 JV1003  ______________________________________________________________________
 JV1003  GEOID HEIGHT    -        -32.573 (meters)                     GEOID18
 JV1003  VERT ORDER      -  THIRD
 JV1003
 JV1003.The horizontal coordinates were scaled from a map and have
 JV1003.an estimated accuracy of +/- 6 seconds.
 JV1003
 JV1003.The orthometric height was computed from unverified reset data.
 JV1003
 JV1003.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1003.GEOID18 height accuracy estimate available here.
 JV1003
 JV1003.Click photographs - Photos may exist for this station.
 JV1003
 JV1003;                    North         East    Units  Estimated Accuracy
 JV1003;SPC MD       -   160,930.      423,490.      MT  (+/- 180 meters Scaled)
 JV1003
 JV1003_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ505310(NAD 83)
 JV1003
 JV1003                          SUPERSEDED SURVEY CONTROL
 JV1003
 JV1003  NGVD 29 (??/??/??)   78.66   (m)          258.1    (f) RESET       3  
 JV1003
 JV1003.Superseded values are not recommended for survey control.
 JV1003
 JV1003.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1003.See file dsdata.pdf to determine how the superseded data were derived.
 JV1003
 JV1003_MARKER: DB = BENCH MARK DISK
 JV1003_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1003_SP_SET: BUILDING
 JV1003_STAMPING: ANNAPOLIS RESET 1952
 JV1003_MARK LOGO: CGS
 JV1003_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1003
 JV1003  HISTORY     - Date     Condition        Report By
 JV1003  HISTORY     - 1952     MONUMENTED       CGS
 JV1003  HISTORY     - 20250319 GOOD             INDIV
 JV1003
 JV1003                          STATION DESCRIPTION
 JV1003
 JV1003'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV1003'AT FT GEORGE G MEADE.
 JV1003'AT FORT GEORGE G. MEADE, ANNE ARUNDEL COUNTY, 0.1 MILE SOUTHEAST
 JV1003'OF THE INTERSECTION OF ANNAPOLIS ROAD AND TWENTIETH STREET, AT
 JV1003'THE PUMPING STATION, IN THE TOP OF CONCRETE VALVE HOUSE, 30
 JV1003'FEET NORTHWEST OF PUMPING STATION BUILDING 1957, AND IN THE
 JV1003'NORTHEAST CORNER.  A STANDARD DISK, STAMPED ANNAPOLIS RESET 1952.
 JV1003'NOTE-- THIS BENCH MARK WAS ESTABLISHED AND ITS ELEVATION DETERMINED
 JV1003'BY A FIELD PARTY FROM THIS BUREAU IN OCTOBER 1952.  THE ELEVATION
 JV1003'GIVEN IS DERIVED FROM A DIRECT TRANSFER FROM BENCH MARK
 JV1003'ANNAPOLIS 1941.  IT WAS REPORTED AT THAT TIME THAT THE
 JV1003'ORIGINAL MARK HAD BEEN STRUCK AND TILTED SLIGHTLY.  USE WITH
 JV1003'CAUTION.
 JV1003
 JV1003                          STATION RECOVERY (2025)
 JV1003
 JV1003'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2025 (SJ)
 JV1003'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6392 ***********************************************************************
 HV6392  DESIGNATION -  ANNAPOLIS ST ANNS EPIS SPIRE
 HV6392  PID         -  HV6392
 HV6392  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6392  COUNTRY     -  US
 HV6392  USGS QUAD   -  ANNAPOLIS (2016)
 HV6392
 HV6392                         *CURRENT SURVEY CONTROL
 HV6392  ______________________________________________________________________
 HV6392* NAD 83(1991) POSITION- 38 58 42.39499(N) 076 29 34.64961(W)   ADJUSTED
 HV6392  ______________________________________________________________________
 HV6392  GEOID HEIGHT    -        -33.338 (meters)                     GEOID18
 HV6392  LAPLACE CORR    -         -3.98  (seconds)                    DEFLEC18
 HV6392  HORZ ORDER      -  THIRD
 HV6392
 HV6392.The horizontal coordinates were established by classical geodetic methods
 HV6392.and adjusted by the National Geodetic Survey in January 1992.
 HV6392
 HV6392.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6392.GEOID18 height accuracy estimate available here.
 HV6392
 HV6392.Click photographs - Photos may exist for this station.
 HV6392
 HV6392.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6392
 HV6392. The following values were computed from the NAD 83(1991) position.
 HV6392
 HV6392;                    North         East     Units Scale Factor Converg.
 HV6392;SPC MD       -   145,735.185   443,934.171   MT  0.99995145   +0 19 05.7
 HV6392;SPC MD       -   478,132.85  1,456,474.03   sFT  0.99995145   +0 19 05.7
 HV6392;UTM  18      - 4,315,444.341   370,679.823   MT  0.99980593   -0 56 21.3
 HV6392
 HV6392_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7067915444(NAD 83)
 HV6392
 HV6392                          SUPERSEDED SURVEY CONTROL
 HV6392
 HV6392  NAD 83(1986)-  38 58 42.39119(N)    076 29 34.66099(W) AD(       ) 3
 HV6392  NAD 27      -  38 58 41.98846(N)    076 29 35.81018(W) AD(       ) 3
 HV6392  USSD        -  38 58 42.34600(N)    076 29 35.63300(W) AD(       ) 3
 HV6392
 HV6392.Superseded values are not recommended for survey control.
 HV6392
 HV6392.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6392.See file dsdata.pdf to determine how the superseded data were derived.
 HV6392
 HV6392_MARKER: 90 = CHURCH SPIRE
 HV6392_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6392+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 HV6392
 HV6392  HISTORY     - Date     Condition        Report By
 HV6392  HISTORY     - 1932     FIRST OBSERVED   CGS
 HV6392  HISTORY     - 1960     GOOD             CGS
 HV6392  HISTORY     - 20010331 GOOD             NGS
 HV6392  HISTORY     - 20031001 GOOD             USPSQD
 HV6392  HISTORY     - 20050718 GOOD             USPSQD
 HV6392  HISTORY     - 20100314 GOOD             GEOCAC
 HV6392
 HV6392                          STATION DESCRIPTION
 HV6392
 HV6392'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6392'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE STATION IS THE
 HV6392'TOP OF THE SPIRE AND LOCATED AT THE EXTENDED INTERSECTION OF WEST
 HV6392'AND MAIN STREETS IN ANNAPOLIS.
 HV6392
 HV6392                          STATION RECOVERY (2001)
 HV6392
 HV6392'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6392'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6392
 HV6392                          STATION RECOVERY (2003)
 HV6392
 HV6392'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6392'RECOVERED IN GOOD CONDITION.
 HV6392
 HV6392                          STATION RECOVERY (2005)
 HV6392
 HV6392'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6392'RECOVERED IN GOOD CONDITION.
 HV6392
 HV6392                          STATION RECOVERY (2010)
 HV6392
 HV6392'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV6392'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6393 ***********************************************************************
 HV6393  DESIGNATION -  ANNAPOLIS ST CAPITOL BLDG DOME
 HV6393  PID         -  HV6393
 HV6393  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6393  COUNTRY     -  US
 HV6393  USGS QUAD   -  ANNAPOLIS (2016)
 HV6393
 HV6393                         *CURRENT SURVEY CONTROL
 HV6393  ______________________________________________________________________
 HV6393* NAD 83(1991) POSITION- 38 58 43.54000(N) 076 29 27.19536(W)   ADJUSTED
 HV6393  ______________________________________________________________________
 HV6393  GEOID HEIGHT    -        -33.342 (meters)                     GEOID18
 HV6393  LAPLACE CORR    -         -3.92  (seconds)                    DEFLEC18
 HV6393  HORZ ORDER      -  THIRD
 HV6393
 HV6393.The horizontal coordinates were established by classical geodetic methods
 HV6393.and adjusted by the National Geodetic Survey in January 1992.
 HV6393
 HV6393.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6393.GEOID18 height accuracy estimate available here.
 HV6393
 HV6393.Click photographs - Photos may exist for this station.
 HV6393
 HV6393.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6393
 HV6393. The following values were computed from the NAD 83(1991) position.
 HV6393
 HV6393;                    North         East     Units Scale Factor Converg.
 HV6393;SPC MD       -   145,771.490   444,113.388   MT  0.99995146   +0 19 10.3
 HV6393;SPC MD       -   478,251.96  1,457,062.01   sFT  0.99995146   +0 19 10.3
 HV6393;UTM  18      - 4,315,476.700   370,859.767   MT  0.99980536   -0 56 16.6
 HV6393
 HV6393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7085915476(NAD 83)
 HV6393
 HV6393                          SUPERSEDED SURVEY CONTROL
 HV6393
 HV6393  NAD 83(1986)-  38 58 43.53627(N)    076 29 27.20671(W) AD(       ) 3
 HV6393  NAD 27      -  38 58 43.13761(N)    076 29 28.34483(W) AD(       ) 3
 HV6393  USBS        -  38 58 40.18000(N)    076 29 09.41000(W) AD(       ) 3
 HV6393  USSD        -  38 58 43.48900(N)    076 29 28.16800(W) AD(       ) 3
 HV6393
 HV6393.Superseded values are not recommended for survey control.
 HV6393
 HV6393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6393.See file dsdata.pdf to determine how the superseded data were derived.
 HV6393
 HV6393_MARKER: 87 = DOME
 HV6393_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV6393_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6393+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 HV6393
 HV6393  HISTORY     - Date     Condition        Report By
 HV6393  HISTORY     - 1933     FIRST OBSERVED   CGS
 HV6393  HISTORY     - 1956     GOOD             CGS
 HV6393  HISTORY     - 1965     GOOD             CGS
 HV6393  HISTORY     - 1981     GOOD             NOS
 HV6393  HISTORY     - 20010331 GOOD             NGS
 HV6393  HISTORY     - 20031001 GOOD             USPSQD
 HV6393  HISTORY     - 20050718 GOOD             USPSQD
 HV6393  HISTORY     - 20100314 GOOD             GEOCAC
 HV6393
 HV6393                          STATION DESCRIPTION
 HV6393
 HV6393'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (ELJ)
 HV6393'THE POINT RECOVERED WAS THE SPIRE ATOP THE DOME OF THE STATE HOUSE
 HV6393'AT ANNAPOLIS.
 HV6393
 HV6393                          STATION RECOVERY (1965)
 HV6393
 HV6393'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (JKW)
 HV6393'STATION RECOVERED IN GOOD CONDITION.  THE RECOVERY NOTE BY
 HV6393'E.L.J. IN 1956 IS ADEQUATE FOR RECOVERY.
 HV6393
 HV6393                          STATION RECOVERY (1981)
 HV6393
 HV6393'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1981 (RHH)
 HV6393'THE STATION WAS RECOVERED AS DESCRIBED.
 HV6393
 HV6393                          STATION RECOVERY (2001)
 HV6393
 HV6393'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6393'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6393
 HV6393                          STATION RECOVERY (2003)
 HV6393
 HV6393'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6393'RECOVERED IN GOOD CONDITION.
 HV6393
 HV6393                          STATION RECOVERY (2005)
 HV6393
 HV6393'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6393'RECOVERED IN GOOD CONDITION.
 HV6393
 HV6393                          STATION RECOVERY (2010)
 HV6393
 HV6393'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV6393'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6394 ***********************************************************************
 HV6394  DESIGNATION -  ANNAPOLIS ST MARYS RC CH SPIRE
 HV6394  PID         -  HV6394
 HV6394  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6394  COUNTRY     -  US
 HV6394  USGS QUAD   -  ANNAPOLIS (2016)
 HV6394
 HV6394                         *CURRENT SURVEY CONTROL
 HV6394  ______________________________________________________________________
 HV6394* NAD 83(1991) POSITION- 38 58 30.39813(N) 076 29 16.11324(W)   ADJUSTED
 HV6394  ______________________________________________________________________
 HV6394  GEOID HEIGHT    -        -33.353 (meters)                     GEOID18
 HV6394  LAPLACE CORR    -         -3.84  (seconds)                    DEFLEC18
 HV6394  HORZ ORDER      -  THIRD
 HV6394
 HV6394.The horizontal coordinates were established by classical geodetic methods
 HV6394.and adjusted by the National Geodetic Survey in January 1992.
 HV6394
 HV6394.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6394.GEOID18 height accuracy estimate available here.
 HV6394
 HV6394.Click photographs - Photos may exist for this station.
 HV6394
 HV6394.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6394
 HV6394. The following values were computed from the NAD 83(1991) position.
 HV6394
 HV6394;                    North         East     Units Scale Factor Converg.
 HV6394;SPC MD       -   145,367.746   444,382.392   MT  0.99995134   +0 19 17.3
 HV6394;SPC MD       -   476,927.35  1,457,944.56   sFT  0.99995134   +0 19 17.3
 HV6394;UTM  18      - 4,315,067.210   371,119.808   MT  0.99980453   -0 56 09.4
 HV6394
 HV6394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7111915067(NAD 83)
 HV6394
 HV6394                          SUPERSEDED SURVEY CONTROL
 HV6394
 HV6394  NAD 83(1986)-  38 58 30.39439(N)    076 29 16.12455(W) AD(       ) 3
 HV6394  NAD 27      -  38 58 29.99486(N)    076 29 17.26570(W) AD(       ) 3
 HV6394  USSD        -  38 58 30.35300(N)    076 29 17.07800(W) AD(       ) 3
 HV6394
 HV6394.Superseded values are not recommended for survey control.
 HV6394
 HV6394.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6394.See file dsdata.pdf to determine how the superseded data were derived.
 HV6394
 HV6394_MARKER: 90 = CHURCH SPIRE
 HV6394_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6394+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 HV6394
 HV6394  HISTORY     - Date     Condition        Report By
 HV6394  HISTORY     - 1933     FIRST OBSERVED   CGS
 HV6394  HISTORY     - 1956     GOOD             CGS
 HV6394  HISTORY     - 1960     GOOD             CGS
 HV6394  HISTORY     - 20010331 GOOD             NGS
 HV6394  HISTORY     - 20031230 GOOD             GEOCAC
 HV6394  HISTORY     - 20050718 GOOD             USPSQD
 HV6394  HISTORY     - 20100314 GOOD             GEOCAC
 HV6394
 HV6394                          STATION DESCRIPTION
 HV6394
 HV6394'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (ELJ)
 HV6394'THE POINT RECOVERED WAS A TALL, PROMINENT, CHURCH SPIRE, ABOUT
 HV6394'0.3 MILE SOUTHEAST OF THE STATE CAPITOL DOME AT ANNAPOLIS,
 HV6394'MARYLAND.  THIS IS THE MOST PROMINENT SPIRE IN THE VICINITY AND
 HV6394'IS CHARTED AS A LANDMARK.
 HV6394
 HV6394                          STATION RECOVERY (1960)
 HV6394
 HV6394'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6394'STATION RECOVERED IN GOOD CONDITION.
 HV6394'
 HV6394'THE RECOVERY NOTE BY E.L.J. IN 1956 IS COMPLETE AND ADEQUATE.
 HV6394
 HV6394                          STATION RECOVERY (2001)
 HV6394
 HV6394'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6394'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6394
 HV6394                          STATION RECOVERY (2003)
 HV6394
 HV6394'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV6394'RECOVERED IN GOOD CONDITION.
 HV6394
 HV6394                          STATION RECOVERY (2005)
 HV6394
 HV6394'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6394'RECOVERED IN GOOD CONDITION.
 HV6394
 HV6394                          STATION RECOVERY (2010)
 HV6394
 HV6394'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV6394'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7176 ***********************************************************************
 HV7176  DESIGNATION -  ANNAPOLIS STANDPIPE
 HV7176  PID         -  HV7176
 HV7176  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7176  COUNTRY     -  US
 HV7176  USGS QUAD   -  SOUTH RIVER (2016)
 HV7176
 HV7176                         *CURRENT SURVEY CONTROL
 HV7176  ______________________________________________________________________
 HV7176* NAD 83(1993) POSITION- 38 58 43.34615(N) 076 30 10.19618(W)   ADJUSTED
 HV7176  ______________________________________________________________________
 HV7176  GEOID HEIGHT    -        -33.317 (meters)                     GEOID18
 HV7176  LAPLACE CORR    -         -4.18  (seconds)                    DEFLEC18
 HV7176  HORZ ORDER      -  THIRD
 HV7176
 HV7176.The horizontal coordinates were established by classical geodetic methods
 HV7176.and adjusted by the National Geodetic Survey in November 1994.
 HV7176
 HV7176.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7176.GEOID18 height accuracy estimate available here.
 HV7176
 HV7176.Click photographs - Photos may exist for this station.
 HV7176
 HV7176.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7176
 HV7176. The following values were computed from the NAD 83(1993) position.
 HV7176
 HV7176;                    North         East     Units Scale Factor Converg.
 HV7176;SPC MD       -   145,759.808   443,078.453   MT  0.99995146   +0 18 43.3
 HV7176;SPC MD       -   478,213.64  1,453,666.56   sFT  0.99995146   +0 18 43.3
 HV7176;UTM  18      - 4,315,487.732   369,824.975   MT  0.99980866   -0 56 43.7
 HV7176
 HV7176_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6982415487(NAD 83)
 HV7176
 HV7176                          SUPERSEDED SURVEY CONTROL
 HV7176
 HV7176  NAD 83(1991)-  38 58 43.34625(N)    076 30 10.19685(W) AD(       ) 3
 HV7176  NAD 83(1986)-  38 58 43.34253(N)    076 30 10.20819(W) AD(       ) 3
 HV7176  NAD 27      -  38 58 42.94294(N)    076 30 11.34217(W) AD(       ) 3
 HV7176
 HV7176.Superseded values are not recommended for survey control.
 HV7176
 HV7176.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7176.See file dsdata.pdf to determine how the superseded data were derived.
 HV7176
 HV7176_MARKER: 52 = STANDPIPE TANK
 HV7176_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7176+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2005
 HV7176
 HV7176  HISTORY     - Date     Condition        Report By
 HV7176  HISTORY     - 1932     FIRST OBSERVED   CGS
 HV7176  HISTORY     - 1943     GOOD             CGS
 HV7176  HISTORY     - 1960     GOOD             CGS
 HV7176  HISTORY     - 20031001 GOOD             USPSQD
 HV7176  HISTORY     - 20050718 GOOD             USPSQD
 HV7176  HISTORY     - 20050925 GOOD             GEOCAC
 HV7176
 HV7176                          STATION DESCRIPTION
 HV7176
 HV7176'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV7176'HIGH BLACK STANDPIPE, ANNAPOLIS, IS AT THE HEAD OF COLLEGE CREEK
 HV7176'WITHIN THE TOWN OF ANNAPOLIS.  SAME AS ANNAPOLIS STANDPIPE, 1933.
 HV7176
 HV7176                          STATION RECOVERY (1943)
 HV7176
 HV7176'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7176'THIS INTERSECTION STATION WAS RECOVERED IN GOOD CONDITION.  THE
 HV7176'POINT RECOVERED WAS THE CENTER OF THE TOP OF THE STANDPIPE.
 HV7176
 HV7176                          STATION RECOVERY (1960)
 HV7176
 HV7176'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7176'STATION RECOVERED IN GOOD CONDITION.
 HV7176'
 HV7176'THE RECOVERY NOTE BY R.L.S. IN 1943 IS COMPLETE AND ADEQUATE.
 HV7176
 HV7176                          STATION RECOVERY (2003)
 HV7176
 HV7176'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7176'RECOVERED IN GOOD CONDITION.
 HV7176
 HV7176                          STATION RECOVERY (2005)
 HV7176
 HV7176'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV7176'RECOVERED IN GOOD CONDITION.
 HV7176
 HV7176                          STATION RECOVERY (2005)
 HV7176
 HV7176'RECOVERY NOTE BY GEOCACHING 2005 (LWB)
 HV7176'STANDPIPE LOCATED AS DESCRIBED.  STRUCTURE IS NOW LIGHT BLUE, AND DOES
 HV7176'APPEAR TO BE ORIGINAL WITH RIVITED CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6342 ***********************************************************************
 HV6342  DESIGNATION -  ANNAPOLIS TARGET GRNDS CEN SIG
 HV6342  PID         -  HV6342
 HV6342  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6342  COUNTRY     -  US
 HV6342  USGS QUAD   -  ANNAPOLIS (2016)
 HV6342
 HV6342                         *CURRENT SURVEY CONTROL
 HV6342  ______________________________________________________________________
 HV6342* NAD 83(1991) POSITION- 38 59 03.59908(N) 076 28 05.02495(W)   ADJUSTED
 HV6342  ______________________________________________________________________
 HV6342  GEOID HEIGHT    -        -33.376 (meters)                     GEOID18
 HV6342  LAPLACE CORR    -         -3.26  (seconds)                    DEFLEC18
 HV6342  HORZ ORDER      -  THIRD
 HV6342
 HV6342.The horizontal coordinates were established by classical geodetic methods
 HV6342.and adjusted by the National Geodetic Survey in January 1992.
 HV6342
 HV6342.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6342.GEOID18 height accuracy estimate available here.
 HV6342
 HV6342.Click photographs - Photos may exist for this station.
 HV6342
 HV6342.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6342
 HV6342. The following values were computed from the NAD 83(1991) position.
 HV6342
 HV6342;                    North         East     Units Scale Factor Converg.
 HV6342;SPC MD       -   146,401.299   446,087.504   MT  0.99995164   +0 20 01.9
 HV6342;SPC MD       -   480,318.26  1,463,538.75   sFT  0.99995164   +0 20 01.9
 HV6342;UTM  18      - 4,316,062.946   372,846.933   MT  0.99979908   -0 55 25.3
 HV6342
 HV6342_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7284616062(NAD 83)
 HV6342
 HV6342                          SUPERSEDED SURVEY CONTROL
 HV6342
 HV6342  NAD 83(1986)-  38 59 03.59522(N)    076 28 05.03636(W) AD(       ) 3
 HV6342  NAD 27      -  38 59 03.19200(N)    076 28 06.18000(W) AD(       ) 3
 HV6342  USSD        -  38 59 03.55300(N)    076 28 06.00400(W) AD(       ) 3
 HV6342
 HV6342.Superseded values are not recommended for survey control.
 HV6342
 HV6342.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6342.See file dsdata.pdf to determine how the superseded data were derived.
 HV6342
 HV6342
 HV6342  HISTORY     - Date     Condition        Report By
 HV6342  HISTORY     - 1910     MONUMENTED       CGS
 HV6342  HISTORY     - 1956     MARK NOT FOUND   CGS
 HV6342
 HV6342                          STATION DESCRIPTION
 HV6342
 HV6342'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (ELJ)
 HV6342'THE STATION WAS SEARCHED FOR BUT NOT FOUND.  THERE IS NO TARGET
 HV6342'GROUNDS NOW IN THE VICINITY INDICATED BY THE POSITION OF THIS
 HV6342'STATION AND IT IS BELIEVED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1846 ***********************************************************************
 HU1846  DESIGNATION -  ANNE
 HU1846  PID         -  HU1846
 HU1846  STATE/COUNTY-  MD/SOMERSET
 HU1846  COUNTRY     -  US
 HU1846  USGS QUAD   -  PRINCESS ANNE (2016)
 HU1846
 HU1846                         *CURRENT SURVEY CONTROL
 HU1846  ______________________________________________________________________
 HU1846* NAD 83(1993) POSITION- 38 11 56.33115(N) 075 41 47.98078(W)   ADJUSTED
 HU1846* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HU1846  ______________________________________________________________________
 HU1846  GEOID HEIGHT    -        -36.004 (meters)                     GEOID18
 HU1846  LAPLACE CORR    -         -1.65  (seconds)                    DEFLEC18
 HU1846  HORZ ORDER      -  SECOND
 HU1846
 HU1846.The horizontal coordinates were established by classical geodetic methods
 HU1846.and adjusted by the National Geodetic Survey in November 1994.
 HU1846
 HU1846.The orthometric height was scaled from a topographic map.
 HU1846
 HU1846.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1846.GEOID18 height accuracy estimate available here.
 HU1846
 HU1846.Click photographs - Photos may exist for this station.
 HU1846
 HU1846.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1846
 HU1846. The following values were computed from the NAD 83(1993) position.
 HU1846
 HU1846;                    North         East     Units Scale Factor Converg.
 HU1846;SPC MD       -    59,904.486   514,163.742   MT  1.00001911   +0 49 04.9
 HU1846;SPC MD       -   196,536.63  1,686,885.54   sFT  1.00001911   +0 49 04.9
 HU1846;UTM  18      - 4,228,122.073   439,000.277   MT  0.99964583   -0 25 51.0
 HU1846
 HU1846!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1846!SPC MD       -   1.00000490  x   1.00001911  =   1.00002401
 HU1846!UTM  18      -   1.00000490  x   0.99964583  =   0.99965073
 HU1846
 HU1846:                Primary Azimuth Mark                     Grid Az
 HU1846:SPC MD       -  PRINCESS ANNE MUNICIPAL TANK             020 25 57.1
 HU1846:UTM  18      -  PRINCESS ANNE MUNICIPAL TANK             021 40 53.0
 HU1846
 HU1846_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3900028122(NAD 83)
 HU1846
 HU1846|---------------------------------------------------------------------|
 HU1846| PID    Reference Object                     Distance      Geod. Az  |
 HU1846|                                                           dddmmss.s |
 HU1846| HU1847 PRINCESS ANNE MUNICIPAL TANK        APPROX. 0.8 KM 0211502.0 |
 HU1846| HU0485 ANNE AZ MK RESET                                   02801     |
 HU1846| HU0487 ANNE RM 1                            28.191 METERS 05925     |
 HU1846| DC7792 ANNE RM 2 AZIMUTH                                  1301243.8 |
 HU1846| HU0486 ANNE RM 3                            37.344 METERS 14721     |
 HU1846|---------------------------------------------------------------------|
 HU1846
 HU1846                          SUPERSEDED SURVEY CONTROL
 HU1846
 HU1846  NAD 83(1991)-  38 11 56.33138(N)    075 41 47.98040(W) AD(       ) 2
 HU1846  NAD 83(1986)-  38 11 56.32805(N)    075 41 48.00631(W) AD(       ) 2
 HU1846  NAD 27      -  38 11 55.89000(N)    075 41 49.27100(W) AD(       ) 2
 HU1846
 HU1846.Superseded values are not recommended for survey control.
 HU1846
 HU1846.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1846.See file dsdata.pdf to determine how the superseded data were derived.
 HU1846
 HU1846_MARKER: DS = TRIANGULATION STATION DISK
 HU1846_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1846_STAMPING: ANNE 1934
 HU1846_MARK LOGO: CGS
 HU1846_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1846+STABILITY: SURFACE MOTION
 HU1846
 HU1846  HISTORY     - Date     Condition        Report By
 HU1846  HISTORY     - 1934     MONUMENTED       CGS
 HU1846  HISTORY     - 1942     GOOD             CGS
 HU1846  HISTORY     - 1948     GOOD             LOCENG
 HU1846  HISTORY     - 1956     GOOD             CGS
 HU1846  HISTORY     - 1960     GOOD             CGS
 HU1846  HISTORY     - 1972     MARK NOT FOUND   NGS
 HU1846
 HU1846                          STATION DESCRIPTION
 HU1846
 HU1846'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU1846'STATION IS LOCATED IN THE TOWN OF PRINCESS ANNE, MARYLAND, ABOUT
 HU1846'600 FEET W OF THE INTERMEDIATE SCHOOL, ABOUT 110 FEET N OF A ROW
 HU1846'OF PECAN TREES WHICH MARKS THE SOUTHERN BOUNDARY OF THE SCHOOL
 HU1846'PLAYGROUND, ABOUT 75 FEET E OF THE W PROPERTY LINE OF THE SCHOOL
 HU1846'PLAYGROUND.  AND ABOUT 65 FEET S OF THE N PROPERTY LINE OF THE
 HU1846'PLAYGROUND.  IT PROJECTS ABOUT 4 INCHES ABOVE THE GROUND.
 HU1846'
 HU1846'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HU1846'DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HU1846'
 HU1846'REFERENCE MARK NO.1 IS 92.49 FEET NE OF THE STATION.  IS 4 FEET
 HU1846'S OF THE NORTHERN LINE OF THE PLAYGROUND.  PROJECTS 3 INCHES ABOVE
 HU1846'THE GROUND.
 HU1846'
 HU1846'REFERENCE MARK NO.2, THE AZIMUTH MARK IS ABOUT 0.25 MILE W-SW
 HU1846'OF THE STATION AND IS LOCATED IN THE SW CORNER OF MR. HENDERSONS
 HU1846'PROPERTY ABOUT 100 FEET S OF A RED BARN.
 HU1846'
 HU1846'REFERENCE MARK NO.3 IS 122.52 FEET SE OF THE STATION.  14 PACES
 HU1846'E OF A LARGE PECAN TREE WHICH IS THE MOST WESTERLY OF A ROW OF
 HU1846'PECAN TREES.  MARKER PROJECTS 3 INCHES ABOVE THE GROUND.
 HU1846'
 HU1846'TO REACH THE STATION, START AT THE PRINCESS ANNE COURTHOUSE,
 HU1846'AND GO SOUTHERLY ALONG ROUTE NO.13 FOR 0.5 MILE, THIS IS ONE BLOCK
 HU1846'S OF THE SAINT ANDREWS EPISCOPAL CHURCH, WHICH WILL SERVE AS A
 HU1846'NATURAL AZIMUTH FOR THIS STATION.  TURN W AND GO 0.2 MILE TO THE
 HU1846'SCHOOL AND STATION.
 HU1846
 HU1846                          STATION RECOVERY (1942)
 HU1846
 HU1846'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1846'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HU1846'ORIGINAL DESCRIPTION--
 HU1846'
 HU1846'(1) THE STATION IS 430 FEET W OF THE INTERMEDIATE SCHOOL INSTEAD
 HU1846'OF 600 FEET.
 HU1846'
 HU1846'(2) THE STATION IS 122 FEET N OF A ROW OF PECAN TREES INSTEAD
 HU1846'OF 110 FEET.
 HU1846'
 HU1846'(3) THE STATION IS 23 FEET S OF THE N PROPERTY LINE OF THE
 HU1846'SCHOOL INSTEAD OF 65 FEET.
 HU1846'
 HU1846'(4) REFERENCE MARK NO.2 IS SE OF THE STATION INSTEAD OF WSW.
 HU1846'
 HU1846'THE STATION IS LOCATED ON THE SOUTHWESTERN EDGE OF THE TOWN OF
 HU1846'PRINCESS ANNE, MARYLAND, 430 FEET W OF THE INTERMEDIATE SCHOOL,
 HU1846'122 FEET N OF A ROW OF LARGE PECAN TREES, IN THE NW CORNER OF THE
 HU1846'PLAYGROUND, 75 FEET E OF THE WESTERN BOUNDARY OF THE SCHOOL
 HU1846'PROPERTY AND 23 FEET S OF THE N BOUNDARY OF THE SCHOOL PROPERTY,
 HU1846'WHICH IS THE EDGE OF THE CULTIVATED GROUND AND THE GRASS EDGE.
 HU1846'THE STATION IS MARKED BY A BRONZE DISK, STAMPED ANNE 1934, SET IN
 HU1846'THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 4
 HU1846'INCHES ABOVE THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1846'
 HU1846'REFERENCE MARK NO.1 IS LOCATED 92.47 FEET NE OF THE STATION,
 HU1846'150.89 FEET N OF REFERENCE MARK NO.3 AND 7 FEET S OF THE N BOUNDARY
 HU1846'OF THE SCHOOL PROPERTY.  THE MARK IS A BRONZE DISK, WITH THE
 HU1846'ARROW POINTING TOWARD THE STATION, STAMPED ANNE 1934 NO.1, SET IN
 HU1846'THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 2
 HU1846'INCHES ABOVE THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1846'
 HU1846'REFERENCE MARK NO.2 (AZIMUTH MARK) IS LOCATED ABOUT 0.25 MILE SE
 HU1846'OF THE STATION, IN THE DRIVEWAY IN FRONT OF THE PRINCESS ANNE
 HU1846'DRESS CO., IN THE SW CORNER OF MR. HENDERSONS PROPERTY, ABOUT
 HU1846'100 FEET S OF A RED BARN, 39 FEET NE OF THE SE CORNER OF THE
 HU1846'PRINCESS ANNE DRESS CO., AND RANGES WITH A ROAD TO THE S.  THE
 HU1846'MARK RANGES OVER THE N END OF THE DRESS FACTORY TO THE STATION.
 HU1846'THE MARK IS A BRONZE DISK, WITH THE ARROW POINTING TOWARD THE
 HU1846'STATION, STAMPED ANNE 1934 NO.2, SET IN THE TOP OF A 12-INCH
 HU1846'SQUARE CONCRETE MONUMENT, WHICH EXTENDS 4 INCHES ABOVE THE GROUND.
 HU1846'THE MARK IS IN GOOD CONDITION.
 HU1846'
 HU1846'REFERENCE MARK NO.3 IS LOCATED IN A LINE OF LARGE PECAN TREES,
 HU1846'122.54 FEET SE OF THE STATION, 36 FEET E OF THE TREE ON THE W END
 HU1846'OF THE LINE OF TREES, AND 19 FEET W OF A PECAN TREE.  THE MARK IS
 HU1846'A BRONZE DISK, WITH THE ARROW POINTING TOWARD THE STATION, STAMPED
 HU1846'ANNE 1934, NO.3, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE
 HU1846'MONUMENT, WHICH EXTENDS 5 INCHES ABOVE THE GROUND.  THE MARK IS
 HU1846'IN GOOD CONDITION.
 HU1846
 HU1846                          STATION RECOVERY (1948)
 HU1846
 HU1846'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1948 (AMB)
 HU1846'LETTER OF A.M. BROWN, TREAS., THE PRESIDENT AND COMMISSIONERS OF
 HU1846'PRINCESS ANNE, MD., DATED JUNE 5, 1948--
 HU1846'
 HU1846'R.M. 2 HAS BEEN KNOCKED OUT OF THE BASE AND ONE OF THE PRONGS IS
 HU1846'BROKEN.
 HU1846'
 HU1846'R.M. DISK STAMPED ANNE NO 2 1934 RECEIVED AT THIS OFFICE 6/14/48.
 HU1846
 HU1846                          STATION RECOVERY (1956)
 HU1846
 HU1846'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (WFD)
 HU1846'THE STATION AND REFERENCE MARKS 1 AND 3 WERE RECOVERED AND FOUND
 HU1846'IN GOOD CONDITION.  THE AZIMUTH MARK (REFERENCE MARK 2) WAS NOT
 HU1846'FOUND AND WAS PRESUMABLY DESTROYED DURING THE CONSTRUCTION OF A
 HU1846'DRIVEWAY FOR THE PRINCESS ANNE SHIRT FACTORY.  THE STATION MARK
 HU1846'WAS LOWERED BELOW PLOW DEPTH, AND A NEW AZIMUTH MARK WAS
 HU1846'ESTABLISHED.  FOLLOWING IS A COMPLETE NEW DESCRIPTION--
 HU1846'
 HU1846'THE STATION IS LOCATED ABOUT 1/2 MI. SW OF THE CENTER OF
 HU1846'PRINCESS ANNE, IN A CULTIVATED FIELD OWNED BY EDGAR A. JONES.  IT
 HU1846'IS ABOUT 450 FT. W OF A SCHOOLHOUSE, 137 FT. N OF THE JONES
 HU1846'RESIDENCE, AND 107 FT. W OF A FENCE DIVIDING LAND OWNED BY THE
 HU1846'SCHOOL AND EDGAR A. JONES.
 HU1846'
 HU1846'TO REACH THE STATION FROM THE POST OFFICE IN PRINCESS ANNE WHICH
 HU1846'IS 0.05 MI. N OF THE INTERSECTION OF U.S. HIGHWAY 13 AND STATE
 HU1846'HIGHWAY 388, GO S ON U.S. HIGHWAY 13 (SOMERSET AVENUE) FOR 0.2
 HU1846'MI. TO LINDEN AVENUE, TURN RIGHT AND GO W ON LINDEN AVENUE FOR
 HU1846'0.25 MI. TO A DRIVEWAY LEADING TO THE JONES HOUSE, TURN RIGHT
 HU1846'AND GO ABOUT 100 YD. TO THE CULTIVATED FIELD AND THE MARK ON THE
 HU1846'RIGHT.  TO REACH THE AZIMUTH MARK FROM THE STATION, GO S FOR
 HU1846'0.05 MI., TURN LEFT AND GO E ON LINDEN AVENUE FOR 0.15 MI. TO
 HU1846'SOUTH BECKFORD AVENUE, TURN LEFT AND GO N ON SOUTH BECKFORD
 HU1846'AVENUE FOR 0.25 MI. TO THE MARK ON THE LEFT.
 HU1846'
 HU1846'THE STATION MARK IS 20 IN. BELOW THE SURFACE OF THE GROUND, AND
 HU1846'THE DISK IS STAMPED ANNE 1934-1956 (NOTES 1B AND 7A).
 HU1846'
 HU1846'REFERENCE MARK 1 IS 15 FT. W OF THE PROPERTY-LINE FENCE, AND 90
 HU1846'FT. N OF THE EDGAR A. JONES GARAGE.  THE MARK PROJECTS 4 IN., AND
 HU1846'THE DISK IS STAMPED ANNE NO 1 1934 (NOTE 11A).
 HU1846'
 HU1846'REFERENCE MARK 3 IS 15 FT. N OF THE N WALL OF THE HOUSE, AND
 HU1846'23 FT. SW OF THE SW CORNER OF THE GARAGE.  THE MARK IS FLUSH WITH
 HU1846'THE GROUND, AND THE DISK IS STAMPED ANNE NO 3 1934 (NOTE 11A).
 HU1846'
 HU1846'THE AZIMUTH MARK IS 102 FT. S OF THE CENTER OF WEST WASHINGTON
 HU1846'STREET, 15 FT. W OF THE CENTER OF SOUTH BECKFORD AVENUE, 2 FT. W
 HU1846'OF A POWERLINE POLE, AND 1.5 FT. N OF A 4- BY 4-IN. WHITE WITNESS
 HU1846'POST.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 HU1846'ANNE 1934 RESET 1956 (NOTE 16B).
 HU1846
 HU1846                          STATION RECOVERY (1960)
 HU1846
 HU1846'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HU1846'STATION MARK, REFERENCE MARKS AND AZIMUTH MARK RECOVERED IN GOOD
 HU1846'CONDITION.  THE DISTANCES TO THE REFERENCE MARKS WERE VERIFIED.
 HU1846'
 HU1846'THE PUBLISHED DESCRIPTION IS ADEQUATE WITH THE FOLLOWING
 HU1846'EXCEPTIONS AND ADDITIONS--REFERENCE MARK NO. 1 IS 106 FEET N OF
 HU1846'THE NE CORNER OF EDGAR A. JONES GARAGE.  THE AZIMUTH MARK IS 17
 HU1846'FT. W OF BECKFORK AVENUE AND 100 FT. S OF THE EXTENTION OF WEST
 HU1846'WASHINGTON ST.
 HU1846
 HU1846                          STATION RECOVERY (1972)
 HU1846
 HU1846'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (RRG)
 HU1846'THE STATION MARK WAS SEARCHED FOR BUT NOT RECOVERED ON THIS
 HU1846'DATE.  THERE IS A HOUSE AT THE DESCRIBED LOCATION AND THE MARK
 HU1846'IS EITHER COVERED AND IN-TACT OR DESTROYED DUE TO HOUSE
 HU1846'CONSTRUCTION.  REFERENCE MARKS 1 AND 3 AND THE AZIMUTH MARK WERE
 HU1846'RECOVERED IN GOOD CONDITION.
 HU1846'
 HU1846'TO REACH THE STATION SITE GO ABOUT 0.1 MILE WEST ALONG WASHINGTON
 HU1846'STREET FROM THE INTERSECTION OF SOMERSET AVENUE IN PRINCESS ANNE,
 HU1846'THENCE ABOUT 0.25 MILE SOUTH ALONG BECKFORD AVENUE, THENCE ABOUT
 HU1846'0.15 MILE WEST ALONG LINDEN AVENUE TO THE EDGAR JONES PROPERTY,
 HU1846'ANNE RM 1 IS SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 HU1846'GROUND, 61 FEET NORTHEAST OF THE SOUTHEAST CORNER OF THE FIRST
 HU1846'HOUSE NORTH OF THE EDGAR JONES RESIDENCE, 21 FEET EAST OF THE
 HU1846'EAST SIDE OF THE HOUSE, 14 FEET WEST OF A NORTH-SOUTH FENCE
 HU1846'BETWEEN A SCHOOL YARD AND THE HOUSE, AND IS STAMPED ANNE NO 1
 HU1846'1934.
 HU1846'
 HU1846'ANNE RM 3 IS SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH
 HU1846'ABOVE THE LEVEL OF THE GROUND, ABOUT 86 YARDS NORTH OF THE CENTER
 HU1846'LINE OF LINDEN AVENUE, 27 FEET SOUTHWEST OF THE SOUTHWEST CORNER
 HU1846'OF A GARAGE, 4-1/2 FEET WEST OF A POLE SUPPORTING A TV ANTENNA,
 HU1846'2-1/2 FEET NORTH OF THE NORTHEAST CORNER OF THE NORTH WING FOR A
 HU1846'TWO-STORY HOUSE.
 HU1846'
 HU1846'TO REACH THE AZIMUTH MARK GO ABOUT 0.15 MILE EAST ALONG LINDEN
 HU1846'AVENUE, THENCE ABOUT 0.25 MILE NORTH ALONG BECKFORD AVENUE TO THE
 HU1846'INTERSECTION OF WASHINGTON STREET, ABOUT 0.1 MILE WEST ALONG
 HU1846'WASHINGTON STREET FROM THE INTERSECTION OF SOMERSET AVENUE, 108
 HU1846'FEET SOUTHEAST OF THE CENTER OF THE INTERSECTION OF BECKFORD
 HU1846'AVENUE AND WASHINGTON STREET, 18-1/2 FEET WEST OF THE CENTER
 HU1846'LINE OF THE AVENUE, 3 FEET NORTHWEST OF POWER POLE 14A, 1-1/2
 HU1846'FEET WEST OF A POWER LINE POLE, 59 FEET SOUTHWEST OF AND
 HU1846'ACROSS BECKFORD AVENUE FROM THE SOUTHWEST CORNER OF A TWO-STORY
 HU1846'HOUSE, AND IS STAMPED ANNE 1934 RESET 1956.
 HU1846'
 HU1846'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1846'AT PRINCESS ANNE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7239 ***********************************************************************
 HV7239  DESIGNATION -  ANNE
 HV7239  PID         -  HV7239
 HV7239  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7239  COUNTRY     -  US
 HV7239  USGS QUAD   -  BOWIE (2016)
 HV7239
 HV7239                         *CURRENT SURVEY CONTROL
 HV7239  ______________________________________________________________________
 HV7239* NAD 83(1991) POSITION- 38 55 01.64978(N) 076 42 13.97399(W)   ADJUSTED
 HV7239* NAVD 88 ORTHO HEIGHT -    50.4   (meters)      165.    (feet) VERTCON3
 HV7239  ______________________________________________________________________
 HV7239  GEOID HEIGHT    -        -32.877 (meters)                     GEOID18
 HV7239  LAPLACE CORR    -         -6.16  (seconds)                    DEFLEC18
 HV7239  HORZ ORDER      -  FIRST
 HV7239
 HV7239.The horizontal coordinates were established by classical geodetic methods
 HV7239.and adjusted by the National Geodetic Survey in January 1992.
 HV7239
 HV7239.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7239.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7239
 HV7239.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7239.GEOID18 height accuracy estimate available here.
 HV7239
 HV7239.Click photographs - Photos may exist for this station.
 HV7239
 HV7239.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7239
 HV7239. The following values were computed from the NAD 83(1991) position.
 HV7239
 HV7239;                    North         East     Units Scale Factor Converg.
 HV7239;SPC MD       -   138,847.960   425,680.237   MT  0.99995011   +0 11 09.1
 HV7239;SPC MD       -   455,537.02  1,396,585.91   sFT  0.99995011   +0 11 09.1
 HV7239;UTM  18      - 4,308,959.944   352,281.298   MT  0.99986870   -1 04 14.0
 HV7239
 HV7239!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7239!SPC MD       -   0.99999726  x   0.99995011  =   0.99994737
 HV7239!UTM  18      -   0.99999726  x   0.99986870  =   0.99986596
 HV7239
 HV7239:                Primary Azimuth Mark                     Grid Az
 HV7239:SPC MD       -  ANNE AZ MK                               270 31 01.5
 HV7239:UTM  18      -  ANNE AZ MK                               271 46 24.6
 HV7239
 HV7239_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5228108959(NAD 83)
 HV7239
 HV7239|---------------------------------------------------------------------|
 HV7239| PID    Reference Object                     Distance      Geod. Az  |
 HV7239|                                                           dddmmss.s |
 HV7239| CX2039 ANNE RM 2                            29.045 METERS 08309     |
 HV7239| CX2037 ANNE AZ MK                                         2704210.6 |
 HV7239| CX2038 ANNE RM 1                            47.576 METERS 34713     |
 HV7239|---------------------------------------------------------------------|
 HV7239
 HV7239                          SUPERSEDED SURVEY CONTROL
 HV7239
 HV7239  NAD 83(1986)-  38 55 01.64628(N)    076 42 13.98536(W) AD(       ) 1
 HV7239  NAD 27      -  38 55 01.24459(N)    076 42 15.10320(W) AD(       ) 1
 HV7239  NGVD 29 (07/19/86)   50.6    (m)          166.     (f) VERT ANG       
 HV7239
 HV7239.Superseded values are not recommended for survey control.
 HV7239
 HV7239.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7239.See file dsdata.pdf to determine how the superseded data were derived.
 HV7239
 HV7239_MARKER: DS = TRIANGULATION STATION DISK
 HV7239_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7239_STAMPING: ANNE 1970
 HV7239_MARK LOGO: CGS
 HV7239_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7239+STABILITY: SURFACE MOTION
 HV7239
 HV7239  HISTORY     - Date     Condition        Report By
 HV7239  HISTORY     - 1970     MONUMENTED       NGS
 HV7239
 HV7239                          STATION DESCRIPTION
 HV7239
 HV7239'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7239'THE STATION IS ABOUT 7 MILES SOUTHEAST OF BOWIE, 7 MILES
 HV7239'NORTH-NORTHEAST OF UPPER MARLBORO, 1 MILE NORTH-NORTHEAST OF
 HV7239'KIDWELLS CORNER AND ON THE PROPERTY OWNED BY ALBERT DI SABATINO.
 HV7239'
 HV7239'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 214 AND
 HV7239'U.S. HIGHWAY 301 IN KIDWELLS CORNER, GO NORTH ON U.S. HIGHWAY 301
 HV7239'FOR 0.2 MILE TO A CROSSROAD, QUEEN ANNE ROAD.  TURN RIGHT AND GO
 HV7239'EASTERLY ON QUEEN ANNE ROAD FOR 0.25 MILE TO A SIDE ROAD LEFT. (TO
 HV7239'REACH THE AZIMUTH MARK FROM THIS POINT TURN LEFT AND GO
 HV7239'NORTHEASTERLY ON THE MAIN TRAVELED ROAD FOR 0.15 MILE TO THE MARK
 HV7239'ON THE RIGHT.) CONTINUE AHEAD ON QUEEN ANNE ROAD, EASTERLY, FOR
 HV7239'0.5 MILE TO A SIDE ROAD LEFT.  TURN LEFT AND GO NORTHERLY FOR 0.3
 HV7239'MILE TO THE TOP OF THE HILL AND THE STATION AHEAD.
 HV7239'
 HV7239'THE STATION MARK IS A STANDARD DISK, STAMPED ANNE 1970, SET IN THE
 HV7239'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER THAT PROJECTS
 HV7239'1 INCH ABOVE THE SURFACE OF THE GROUND.  IT IS 73.0 FEET WEST OF
 HV7239'THE CENTERLINE OF THE DRIVEWAY, 24.2 FEET NORTHWEST OF THE
 HV7239'NORTHEAST CORNER OF A METAL POULTRY HOUSE, 23.0 FEET NORTHEAST OF
 HV7239'THE NORTHWEST CORNER OF A POULTRY HOUSE AND 4 FEET WEST OF A METAL
 HV7239'WITNESS POST.  THE UNDERGROUND MARK WAS SET 42 INCHES BELOW THE
 HV7239'SURFACE OF THE GROUND.
 HV7239'
 HV7239'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED ANNE NO 1 1970, SET
 HV7239'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER THAT
 HV7239'PROJECTS 3 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 156.2
 HV7239'FEET NORTH OF THE WITNESS POST, 2.0 FEET SOUTHEAST OF THE
 HV7239'SOUTHWEST CORNER OF A BARN, 1.4 FEET SOUTH OF THE SOUTH SIDE OF
 HV7239'THE BARN AND ABOUT THE SAME ELEVATION AS THE STATION.
 HV7239'
 HV7239'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED ANNE NO 2 1970, SET
 HV7239'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER THAT IS
 HV7239'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 99.3 FEET WEST OF THE
 HV7239'WITNESS POST, 13.6 FEET NORTH OF THE CENTERLINE OF THE DRIVEWAY,
 HV7239'9.6 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A METAL SHED AND 2
 HV7239'FEET HIGHER IN ELEVATION THAN THE STATION.
 HV7239'
 HV7239'AZIMUTH MARK IS A STANDARD DISK, STAMPED ANNE 1970, SET IN THE
 HV7239'TOP OF A ROUND CONCRETE POST, 12 INCHES IS DIAMETER THAT PROJECTS
 HV7239'3 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 18.0 FEET EAST OF
 HV7239'THE CENTERLINE OF THE ROAD, 2.0 FEET NORTH OF A POWERLINE POLE AND
 HV7239'1.8 FEET SOUTH OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4951 ***********************************************************************
 JV4951  DESIGNATION -  ANNE
 JV4951  PID         -  JV4951
 JV4951  STATE/COUNTY-  MD/QUEEN ANNES
 JV4951  COUNTRY     -  US
 JV4951  USGS QUAD   -  CHESTERTOWN (2017)
 JV4951
 JV4951                         *CURRENT SURVEY CONTROL
 JV4951  ______________________________________________________________________
 JV4951* NAD 83(1991) POSITION- 39 12 19.56858(N) 076 03 26.82158(W)   ADJUSTED
 JV4951* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV4951  ______________________________________________________________________
 JV4951  GEOID HEIGHT    -        -33.461 (meters)                     GEOID18
 JV4951  LAPLACE CORR    -         -2.24  (seconds)                    DEFLEC18
 JV4951  HORZ ORDER      -  THIRD
 JV4951
 JV4951.The horizontal coordinates were established by classical geodetic methods
 JV4951.and adjusted by the National Geodetic Survey in January 1992.
 JV4951
 JV4951.The orthometric height was scaled from a topographic map.
 JV4951
 JV4951.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4951.GEOID18 height accuracy estimate available here.
 JV4951
 JV4951.Click photographs - Photos may exist for this station.
 JV4951
 JV4951.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4951
 JV4951. The following values were computed from the NAD 83(1991) position.
 JV4951
 JV4951;                    North         East     Units Scale Factor Converg.
 JV4951;SPC MD       -   171,232.478   481,408.858   MT  0.99996636   +0 35 29.7
 JV4951;SPC MD       -   561,785.22  1,579,422.23   sFT  0.99996636   +0 35 29.7
 JV4951;UTM  18      - 4,340,107.011   408,697.835   MT  0.99970264   -0 40 06.5
 JV4951
 JV4951!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4951!SPC MD       -   1.00000497  x   0.99996636  =   0.99997133
 JV4951!UTM  18      -   1.00000497  x   0.99970264  =   0.99970761
 JV4951
 JV4951:                Primary Azimuth Mark                     Grid Az
 JV4951:SPC MD       -  HOPE                                     350 38 49.0
 JV4951:UTM  18      -  HOPE                                     351 54 25.2
 JV4951
 JV4951_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0869740107(NAD 83)
 JV4951
 JV4951|---------------------------------------------------------------------|
 JV4951| PID    Reference Object                     Distance      Geod. Az  |
 JV4951|                                                           dddmmss.s |
 JV4951| JV4953 TRAP                                430.434 METERS 0353612.9 |
 JV4951| JV4971 QUEEN                               434.550 METERS 2144918.1 |
 JV4951| JV4991 CHESTERTOWN M P CHURCH SPIRE        APPROX. 1.1 KM 2984208.5 |
 JV4951| JV4999 CHESTERTOWN ME CHURCH SPIRE         APPROX. 1.1 KM 3010104.0 |
 JV4951| JV4995 CHESTERTOWN WASH COLL CUP FLAG      APPROX. 1.6 KM 3263139.3 |
 JV4951| JV4978 HOPE                                APPROX. 0.7 KM 3511418.7 |
 JV4951|---------------------------------------------------------------------|
 JV4951
 JV4951                          SUPERSEDED SURVEY CONTROL
 JV4951
 JV4951  NAD 83(1986)-  39 12 19.56012(N)    076 03 26.83379(W) AD(       ) 3
 JV4951  NAD 27      -  39 12 19.16500(N)    076 03 28.01900(W) AD(       ) 3
 JV4951  USSD        -  39 12 19.61900(N)    076 03 27.79500(W) AD(       ) 3
 JV4951
 JV4951.Superseded values are not recommended for survey control.
 JV4951
 JV4951.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4951.See file dsdata.pdf to determine how the superseded data were derived.
 JV4951
 JV4951_MARKER: N = NAIL
 JV4951_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4951_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4951
 JV4951  HISTORY     - Date     Condition        Report By
 JV4951  HISTORY     - 1909     MONUMENTED       CGS
 JV4951  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV4951
 JV4951                          STATION DESCRIPTION
 JV4951
 JV4951'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JV4951'STATION IS ON THE EASTERN SIDE OF CHESTER RIVER, ON LAND BELONGING
 JV4951'TO MR. SKIPPER, 50 METERS INSIDE THE HIGH-WATER MARK, AND 40 METERS
 JV4951'S OF THE ROAD LEADING TO CENTERVILLE, MARYLAND.
 JV4951'
 JV4951'THE STATION IS MARKED BY A BURIED DARK QUART BOTTLE AND A NAIL
 JV4951'IN CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE TOP
 JV4951'OF A 4-INCH DRAINTILE AT THE SURFACE OF THE GROUND.  REFERENCE
 JV4951'MARK IS A BURIED QUART BOTTLE AND A NAIL IN CONCRETE IN THE TOP
 JV4951'OF A 3-INCH DRAINTILE AT THE SURFACE OF THE GROUND.  REFERENCE
 JV4951'MARK IS 9.855 METERS (32.33 FEET) FROM THE STATION IN BEARING N
 JV4951'75 DEG W.
 JV4951
 JV4951                          STATION RECOVERY (1941)
 JV4951
 JV4951'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV4951'STATION SEARCHED FOR AND NOT FOUND.  THE LOCALITY IS NOW OCCUPIED
 JV4951'BY A HOUSE BUILT ABOUT 1920 ON FILLED LAND.  IT IS BELIEVED THAT
 JV4951'THE STATION IS EITHER DUG OUT OR COVERED AND SHOULD BE CONSIDERED
 JV4951'LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0485 ***********************************************************************
 HU0485  DESIGNATION -  ANNE AZ MK RESET
 HU0485  PID         -  HU0485
 HU0485  STATE/COUNTY-  MD/SOMERSET
 HU0485  COUNTRY     -  US
 HU0485  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0485
 HU0485                         *CURRENT SURVEY CONTROL
 HU0485  ______________________________________________________________________
 HU0485* NAD 83(1986) POSITION- 38 12 08.     (N) 075 41 41.     (W)   SCALED
 HU0485* NAVD 88 ORTHO HEIGHT -     3.979 (meters)       13.05  (feet) ADJUSTED
 HU0485  ______________________________________________________________________
 HU0485  GEOID HEIGHT    -        -36.002 (meters)                     GEOID18
 HU0485  DYNAMIC HEIGHT  -          3.977 (meters)       13.05  (feet) COMP
 HU0485  MODELED GRAVITY -    979,987.7   (mgal)                       NAVD 88
 HU0485
 HU0485  VERT ORDER      -  FIRST     CLASS I
 HU0485
 HU0485.The horizontal coordinates were scaled from a map and have
 HU0485.an estimated accuracy of +/- 6 seconds.
 HU0485
 HU0485.The orthometric height was determined by differential leveling and
 HU0485.adjusted by the NATIONAL GEODETIC SURVEY
 HU0485.in June 1991.
 HU0485
 HU0485.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0485.GEOID18 height accuracy estimate available here.
 HU0485
 HU0485.Click photographs - Photos may exist for this station.
 HU0485
 HU0485.The dynamic height is computed by dividing the NAVD 88
 HU0485.geopotential number by the normal gravity value computed on the
 HU0485.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0485.degrees latitude (g = 980.6199 gals.).
 HU0485
 HU0485.The modeled gravity was interpolated from observed gravity values.
 HU0485
 HU0485;                    North         East    Units  Estimated Accuracy
 HU0485;SPC MD       -    60,270.      514,330.      MT  (+/- 180 meters Scaled)
 HU0485
 HU0485_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH391284(NAD 83)
 HU0485
 HU0485                          SUPERSEDED SURVEY CONTROL
 HU0485
 HU0485  NGVD 29 (11/26/84)    4.234  (m)           13.89   (f) ADJUSTED    1 1
 HU0485
 HU0485.Superseded values are not recommended for survey control.
 HU0485
 HU0485.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0485.See file dsdata.pdf to determine how the superseded data were derived.
 HU0485
 HU0485_MARKER: DZ = AZIMUTH MARK DISK
 HU0485_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0485_STAMPING: ANNE 1934 RESET 1956
 HU0485_MARK LOGO: CGS
 HU0485_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0485+STABILITY: SURFACE MOTION
 HU0485
 HU0485  HISTORY     - Date     Condition        Report By
 HU0485  HISTORY     - 1956     MONUMENTED       CGS
 HU0485  HISTORY     - 1972     GOOD             NGS
 HU0485
 HU0485                          STATION DESCRIPTION
 HU0485
 HU0485'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0485'AT PRINCESS ANNE.
 HU0485'AT PRINCESS ANNE, 0.1 MILE WEST ALONG WASHINGTON STREET FROM THE
 HU0485'INTERSECTION OF SOMERSET AVENUE, NEAR THE INTERSECTION OF BECKFORD
 HU0485'AVENUE AND WASHINGTON STREET, 108 FEET SOUTHEAST OF THE CENTER OF
 HU0485'THE INTERSECTION, 18 1/2 FEET WEST OF THE CENTER LINE OF BECKFORD
 HU0485'AVENUE, 3 FEET NORTHWEST OF POWER LINE POLE NO. 14A, 1 1/2 FEET
 HU0485'WEST OF A POWER LINE POLE, 59.6 SOUTHWEST OF AND ACROSS THE AVENUE
 HU0485'FROM THE SOUTHWEST CORNER OF A TWO-STORY HOUSE, 2 1/2 FEET NORTH
 HU0485'OF A WHITE WOODEN WITNESS POST, ABOUT LEVEL WITH THE AVENUE AND SET
 HU0485'IN THE TOP OF A CONCRETE POST ONE INCH BELOW THE LEVEL OF THE
 HU0485'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0487 ***********************************************************************
 HU0487  DESIGNATION -  ANNE RM 1
 HU0487  PID         -  HU0487
 HU0487  STATE/COUNTY-  MD/SOMERSET
 HU0487  COUNTRY     -  US
 HU0487  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0487
 HU0487                         *CURRENT SURVEY CONTROL
 HU0487  ______________________________________________________________________
 HU0487* NAD 83(1986) POSITION- 38 11 56.80   (N) 075 41 46.98   (W)   HD_HELD1
 HU0487* NAVD 88 ORTHO HEIGHT -     4.633 (meters)       15.20  (feet) ADJUSTED
 HU0487  ______________________________________________________________________
 HU0487  GEOID HEIGHT    -        -36.004 (meters)                     GEOID18
 HU0487  DYNAMIC HEIGHT  -          4.630 (meters)       15.19  (feet) COMP
 HU0487  MODELED GRAVITY -    979,987.3   (mgal)                       NAVD 88
 HU0487
 HU0487  VERT ORDER      -  FIRST     CLASS I
 HU0487
 HU0487.The horizontal coordinates were determined by differentially corrected
 HU0487.hand held GPS observations or other comparable positioning techniques
 HU0487.and have an estimated accuracy of +/- 3 meters.
 HU0487
 HU0487.The orthometric height was determined by differential leveling and
 HU0487.adjusted by the NATIONAL GEODETIC SURVEY
 HU0487.in June 1991.
 HU0487
 HU0487.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0487.GEOID18 height accuracy estimate available here.
 HU0487
 HU0487.Click photographs - Photos may exist for this station.
 HU0487
 HU0487.The dynamic height is computed by dividing the NAVD 88
 HU0487.geopotential number by the normal gravity value computed on the
 HU0487.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0487.degrees latitude (g = 980.6199 gals.).
 HU0487
 HU0487.The modeled gravity was interpolated from observed gravity values.
 HU0487
 HU0487;                    North         East    Units  Estimated Accuracy
 HU0487;SPC MD       -    59,919.3     514,187.9     MT  (+/- 3 meters HH1 GPS) 
 HU0487
 HU0487_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3902428136(NAD 83)
 HU0487
 HU0487                          SUPERSEDED SURVEY CONTROL
 HU0487
 HU0487  NGVD 29 (11/26/84)    4.887  (m)           16.03   (f) ADJUSTED    1 1
 HU0487
 HU0487.Superseded values are not recommended for survey control.
 HU0487
 HU0487.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0487.See file dsdata.pdf to determine how the superseded data were derived.
 HU0487
 HU0487_MARKER: DR = REFERENCE MARK DISK
 HU0487_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0487_STAMPING: ANNE NO 1 1934
 HU0487_MARK LOGO: CGS
 HU0487_PROJECTION: FLUSH
 HU0487_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0487+STABILITY: SURFACE MOTION
 HU0487
 HU0487  HISTORY     - Date     Condition        Report By
 HU0487  HISTORY     - 1934     MONUMENTED       CGS
 HU0487  HISTORY     - 1972     GOOD             NGS
 HU0487
 HU0487                          STATION DESCRIPTION
 HU0487
 HU0487'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0487'0.5 MI SW FROM PRINCESS ANNE.
 HU0487'ABOUT 0.1 MILE WEST ALONG WASHINGTON STREET FROM THE INTERSECTION
 HU0487'OF SOMERSET AVENUE AT PRINCESS ANNE, THENCE 0.25 MILE SOUTH ALONG
 HU0487'BECKFORD AVENUE, THENCE 0.15 MILE WEST ALONG LINDEN AVENUE, NEAR
 HU0487'THE NORTHEAST CORNER OF A BRICK HOUSE, NEAR THE FIRST HOUSE NORTH
 HU0487'OF THE RESIDENCE OF MR. EDGAR JONES RESIDENCE, 61 FEET NORTHEAST
 HU0487'OF THE SOUTHEAST CORNER OF THE HOUSE, 25.6 FEET SOUTHEAST OF THE
 HU0487'MOST NORTHEAST CORNER OF THE HOUSE, 21 FEET EAST OF THE EAST SIDE
 HU0487'OF THE HOUSE, 14 FEET WEST OF A NORTH-SOUTH FENCE BETWEEN A SCHOOL
 HU0487'YARD AND THE HOUSE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 HU0487'THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0486 ***********************************************************************
 HU0486  DESIGNATION -  ANNE RM 3
 HU0486  PID         -  HU0486
 HU0486  STATE/COUNTY-  MD/SOMERSET
 HU0486  COUNTRY     -  US
 HU0486  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0486
 HU0486                         *CURRENT SURVEY CONTROL
 HU0486  ______________________________________________________________________
 HU0486* NAD 83(1986) POSITION- 38 11 55.31   (N) 075 41 47.15   (W)   HD_HELD1
 HU0486* NAVD 88 ORTHO HEIGHT -     4.599 (meters)       15.09  (feet) ADJUSTED
 HU0486  ______________________________________________________________________
 HU0486  GEOID HEIGHT    -        -36.005 (meters)                     GEOID18
 HU0486  DYNAMIC HEIGHT  -          4.596 (meters)       15.08  (feet) COMP
 HU0486  MODELED GRAVITY -    979,987.3   (mgal)                       NAVD 88
 HU0486
 HU0486  VERT ORDER      -  FIRST     CLASS I
 HU0486
 HU0486.The horizontal coordinates were determined by differentially corrected
 HU0486.hand held GPS observations or other comparable positioning techniques
 HU0486.and have an estimated accuracy of +/- 3 meters.
 HU0486
 HU0486.The orthometric height was determined by differential leveling and
 HU0486.adjusted by the NATIONAL GEODETIC SURVEY
 HU0486.in June 1991.
 HU0486
 HU0486.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0486.GEOID18 height accuracy estimate available here.
 HU0486
 HU0486.Click photographs - Photos may exist for this station.
 HU0486
 HU0486.The dynamic height is computed by dividing the NAVD 88
 HU0486.geopotential number by the normal gravity value computed on the
 HU0486.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0486.degrees latitude (g = 980.6199 gals.).
 HU0486
 HU0486.The modeled gravity was interpolated from observed gravity values.
 HU0486
 HU0486;                    North         East    Units  Estimated Accuracy
 HU0486;SPC MD       -    59,873.3     514,184.4     MT  (+/- 3 meters HH1 GPS) 
 HU0486
 HU0486_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3902028090(NAD 83)
 HU0486
 HU0486                          SUPERSEDED SURVEY CONTROL
 HU0486
 HU0486  NGVD 29 (11/26/84)    4.852  (m)           15.92   (f) ADJUSTED    1 1
 HU0486
 HU0486.Superseded values are not recommended for survey control.
 HU0486
 HU0486.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0486.See file dsdata.pdf to determine how the superseded data were derived.
 HU0486
 HU0486_MARKER: DR = REFERENCE MARK DISK
 HU0486_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0486_STAMPING: ANNE NO 3 1934
 HU0486_MARK LOGO: CGS
 HU0486_PROJECTION: PROJECTING 3 CENTIMETERS
 HU0486_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0486+STABILITY: SURFACE MOTION
 HU0486
 HU0486  HISTORY     - Date     Condition        Report By
 HU0486  HISTORY     - 1934     MONUMENTED       CGS
 HU0486  HISTORY     - 1972     GOOD             NGS
 HU0486
 HU0486                          STATION DESCRIPTION
 HU0486
 HU0486'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0486'0.5 MI SW FROM PRINCESS ANNE.
 HU0486'ABOUT 0.1 MILE WEST ALONG WASHINGTON STREET FROM THE INTERSECTION
 HU0486'OF SOMERSET AVENUE AT PRINCESS ANNE, THENCE 0.25 MILE SOUTH ALONG
 HU0486'BECKFORD AVENUE, THENCE 0.15 MILE WEST ALONG LINDEN AVENUE, ON
 HU0486'THE PROPERTY OF MR. EDGAR JONES, 86 YARDS NORTH OF THE CENTER LINE
 HU0486'OF LINDEN AVENUE, 27 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A
 HU0486'GARAGE, 4 1/2 FEET WEST OF A POLE SUPPORTING AN ANTENNA, 2 1/2
 HU0486'FEET NORTH OF THE NORTHEAST CORNER OF THE NORTH WING OF A TWO
 HU0486'STORY HOUSE, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1
 HU0486'INCH ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5731 ***********************************************************************
 HV5731  DESIGNATION -  ANSLEY
 HV5731  PID         -  HV5731
 HV5731  STATE/COUNTY-  MD/TALBOT
 HV5731  COUNTRY     -  US
 HV5731  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5731
 HV5731                         *CURRENT SURVEY CONTROL
 HV5731  ______________________________________________________________________
 HV5731* NAD 83(1991) POSITION- 38 46 00.22899(N) 076 13 33.87846(W)   ADJUSTED
 HV5731* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5731  ______________________________________________________________________
 HV5731  GEOID HEIGHT    -        -34.365 (meters)                     GEOID18
 HV5731  LAPLACE CORR    -         -4.80  (seconds)                    DEFLEC18
 HV5731  HORZ ORDER      -  THIRD
 HV5731
 HV5731.The horizontal coordinates were established by classical geodetic methods
 HV5731.and adjusted by the National Geodetic Survey in January 1992.
 HV5731
 HV5731.The orthometric height was scaled from a topographic map.
 HV5731
 HV5731.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5731.GEOID18 height accuracy estimate available here.
 HV5731
 HV5731.Click photographs - Photos may exist for this station.
 HV5731
 HV5731.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5731
 HV5731. The following values were computed from the NAD 83(1991) position.
 HV5731
 HV5731;                    North         East     Units Scale Factor Converg.
 HV5731;SPC MD       -   122,396.556   467,257.655   MT  0.99995165   +0 29 08.7
 HV5731;SPC MD       -   401,562.70  1,532,994.49   sFT  0.99995165   +0 29 08.7
 HV5731;UTM  18      - 4,291,604.589   393,482.316   MT  0.99973972   -0 46 04.0
 HV5731
 HV5731!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5731!SPC MD       -   1.00000527  x   0.99995165  =   0.99995692
 HV5731!UTM  18      -   1.00000527  x   0.99973972  =   0.99974499
 HV5731
 HV5731:                Primary Azimuth Mark                     Grid Az
 HV5731:SPC MD       -  BEVERLY                                  350 22 07.3
 HV5731:UTM  18      -  BEVERLY                                  351 37 20.0
 HV5731
 HV5731_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9348291604(NAD 83)
 HV5731
 HV5731|---------------------------------------------------------------------|
 HV5731| PID    Reference Object                     Distance      Geod. Az  |
 HV5731|                                                           dddmmss.s |
 HV5731| HV5695 SAMUEL                              456.355 METERS 0200953.8 |
 HV5731| CX2041 ANSLEY RM                                          07113     |
 HV5731| HV5728 HARPER                              APPROX. 0.5 KM 2061724.6 |
 HV5731| HV5733 ELMORE                              297.982 METERS 27026     |
 HV5731| HV5729 BEVERLY                             413.108 METERS 3505116.0 |
 HV5731|---------------------------------------------------------------------|
 HV5731
 HV5731                          SUPERSEDED SURVEY CONTROL
 HV5731
 HV5731  NAD 83(1986)-  38 46 00.22508(N)    076 13 33.89324(W) AD(       ) 3
 HV5731  NAD 27      -  38 45 59.81000(N)    076 13 35.08700(W) AD(       ) 3
 HV5731  USSD        -  38 46 00.18500(N)    076 13 34.90800(W) AD(       ) 3
 HV5731
 HV5731.Superseded values are not recommended for survey control.
 HV5731
 HV5731.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5731.See file dsdata.pdf to determine how the superseded data were derived.
 HV5731
 HV5731_MARKER: K = CLAY TILE PIPE
 HV5731_SETTING: 0 = UNSPECIFIED SETTING
 HV5731
 HV5731  HISTORY     - Date     Condition        Report By
 HV5731  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5731  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5731
 HV5731                          STATION DESCRIPTION
 HV5731
 HV5731'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5731'ON THE EASTERN SHORE OF BACK CREEK (SAN DOMINGO CREEK), ABOUT 1
 HV5731'MILE S OF ST. MICHAELS, 1/2 MILE NE OF N END OF HAMBLETON ISLAND,
 HV5731'AND 1/8 MILE S OF ENTRANCE TO A SMALL CREEK, ON A MARSH POINT,
 HV5731'ABOUT 1 FOOT ABOVE HIGH WATER, 3 YARDS S OF SHORE, AND IN CENTER
 HV5731'OF TRIANGLE FORMED BY THREE PINE STUBS DRIVEN INTO MARSH TO
 HV5731'SUPPORT THEODOLITE.  STATION MARK IS CENTER OF 2-INCH TILE PIPE
 HV5731'PROJECTING 4 INCHES ABOVE SURFACE OF GROUND.  SUB-SURFACE MARK IS
 HV5731'THE CENTER OF 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES
 HV5731'BELOW THE SURFACE MARK.  REFERENCE MARK IS MARKED BY A HOLE IN THE
 HV5731'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5731'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5731'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5731'COUNTER-SUNK IN TOP OF POST.  IT IS 21.25 METERS (69.7 FEET) FROM
 HV5731'STATION N 71 DEG 13 MIN E. OTHER DISTANCES AND BEARINGS ARE AS
 HV5731'FOLLOWS--CUPOLA ON BEVERLY HOUSE, 1/4 MILE, S 19 DEG 44 MIN W.  N
 HV5731'CHIMNEY OF WILLEY HOUSE, 1/2 MILE, S 46 DEG 2 MIN W.  N CHIMNEY OF
 HV5731'HOUSE, 3/8 MILE, N 86 DEG 31 MIN W.  S GABLE OF BARN, 5/8 MILE, N
 HV5731'15 DEG 55 MIN W.  NAIL IN BLAZE IN 12-INCH PINE TREE, 18.74 METERS
 HV5731'(61.5 FEET), N 55 DEG 44 MIN E.  NAIL IN BLAZE IN 18-INCH PINE
 HV5731'TREE, 12.72 METERS (41.7 FEET), N 86 DEG 22 MIN E.
 HV5731
 HV5731                          STATION RECOVERY (1940)
 HV5731
 HV5731'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5731'STATION MARK HAS BEEN WASHED OUT.
 HV5731'
 HV5731'REFERENCE MONUMENT RECOVERED IN GOOD CONDITION, PROJECTING 2
 HV5731'INCHES ABOVE SURFACE OF GROUND, AND IS 5.0 METERS E OF EDGE OF
 HV5731'TOP OF 3-FOOT BANK AND 10.0 METERS NE OF CORNER OF WOODS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3729 ***********************************************************************
 JV3729  DESIGNATION -  ANSVILLE
 JV3729  PID         -  JV3729
 JV3729  STATE/COUNTY-  MD/WASHINGTON
 JV3729  COUNTRY     -  US
 JV3729  USGS QUAD   -  HAGERSTOWN (2016)
 JV3729
 JV3729                         *CURRENT SURVEY CONTROL
 JV3729  ______________________________________________________________________
 JV3729* NAD 83(1991) POSITION- 39 41 24.90421(N) 077 44 02.93735(W)   ADJUSTED
 JV3729* NAVD 88 ORTHO HEIGHT -   202.541 (meters)      664.50  (feet) ADJUSTED
 JV3729  ______________________________________________________________________
 JV3729  GEOID HEIGHT    -        -34.245 (meters)                     GEOID18
 JV3729  LAPLACE CORR    -          2.97  (seconds)                    DEFLEC18
 JV3729  DYNAMIC HEIGHT  -        202.421 (meters)      664.11  (feet) COMP
 JV3729  MODELED GRAVITY -    980,033.7   (mgal)                       NAVD 88
 JV3729
 JV3729  HORZ ORDER      -  SECOND
 JV3729  VERT ORDER      -  SECOND    CLASS 0
 JV3729
 JV3729.The horizontal coordinates were established by classical geodetic methods
 JV3729.and adjusted by the National Geodetic Survey in January 1992.
 JV3729
 JV3729.The orthometric height was determined by differential leveling and
 JV3729.adjusted by the NATIONAL GEODETIC SURVEY
 JV3729.in June 1991.
 JV3729
 JV3729.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3729.GEOID18 height accuracy estimate available here.
 JV3729
 JV3729.Click photographs - Photos may exist for this station.
 JV3729
 JV3729.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3729
 JV3729.The dynamic height is computed by dividing the NAVD 88
 JV3729.geopotential number by the normal gravity value computed on the
 JV3729.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3729.degrees latitude (g = 980.6199 gals.).
 JV3729
 JV3729.The modeled gravity was interpolated from observed gravity values.
 JV3729
 JV3729. The following values were computed from the NAD 83(1991) position.
 JV3729
 JV3729;                    North         East     Units Scale Factor Converg.
 JV3729;SPC MD       -   224,891.748   337,023.292   MT  1.00005087   -0 27 38.8
 JV3729;SPC MD       -   737,832.34  1,105,717.25   sFT  1.00005087   -0 27 38.8
 JV3729;SPC WV N     -   133,627.168   751,453.300   MT  0.99994137   +1 07 34.4
 JV3729;SPC WV N     -   438,408.47  2,465,393.04   sFT  0.99994137   +1 07 34.4
 JV3729;UTM  18      - 4,396,953.114   265,546.153   MT  1.00027680   -1 44 48.9
 JV3729
 JV3729!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3729!SPC MD       -   0.99997360  x   1.00005087  =   1.00002447
 JV3729!SPC WV N     -   0.99997360  x   0.99994137  =   0.99991497
 JV3729!UTM  18      -   0.99997360  x   1.00027680  =   1.00025039
 JV3729
 JV3729:                Primary Azimuth Mark                     Grid Az
 JV3729:SPC MD       -  ANSVILLE AZ MK                           283 49 44.3
 JV3729:SPC WV N     -  ANSVILLE AZ MK                           282 14 31.1
 JV3729:UTM  18      -  ANSVILLE AZ MK                           285 06 54.4
 JV3729
 JV3729_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6554696953(NAD 83)
 JV3729
 JV3729|---------------------------------------------------------------------|
 JV3729| PID    Reference Object                     Distance      Geod. Az  |
 JV3729|                                                           dddmmss.s |
 JV3729| JV3960 ANSVILLE 2 RESET                     57.418 METERS 10322     |
 JV3729| JV3331 ANSVILLE RM 1                        21.331 METERS 12504     |
 JV3729| JV3730 ANSVILLE RM 2                        23.318 METERS 25627     |
 JV3729| JV3328 ANSVILLE AZ MK                                     2832205.5 |
 JV3729|---------------------------------------------------------------------|
 JV3729
 JV3729                          SUPERSEDED SURVEY CONTROL
 JV3729
 JV3729  NAD 83(1986)-  39 41 24.90335(N)    077 44 02.94848(W) AD(       ) 2
 JV3729  NAD 27      -  39 41 24.55420(N)    077 44 03.97010(W) AD(       ) 2
 JV3729  NGVD 29 (11/26/84)  202.736  (m)          665.14   (f) ADJUSTED    2 0
 JV3729
 JV3729.Superseded values are not recommended for survey control.
 JV3729
 JV3729.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3729.See file dsdata.pdf to determine how the superseded data were derived.
 JV3729
 JV3729_MARKER: DS = TRIANGULATION STATION DISK
 JV3729_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3729_STAMPING: ANSVILLE 1957
 JV3729_MARK LOGO: CGS
 JV3729_PROJECTION: PROJECTING 10 CENTIMETERS
 JV3729_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3729+STABILITY: SURFACE MOTION
 JV3729
 JV3729  HISTORY     - Date     Condition        Report By
 JV3729  HISTORY     - 1957     MONUMENTED       CGS
 JV3729  HISTORY     - 1961     SEE DESCRIPTION  MDDT
 JV3729
 JV3729                          STATION DESCRIPTION
 JV3729
 JV3729'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV3729'STATION IS LOCATED ABOUT 3.3 MILES NORTH OF THE CENTER OF
 JV3729'HAGERSTOWN, ABOUT 2.0 MILES SOUTH OF MARYLAND-PENNSYLVANIA STATE
 JV3729'LINE AND ABOUT 0.7 MILE SOUTHEAST OF THE VILLAGE OF
 JV3729'MAUGANSVILLE.  STATION IS 89 FEET WEST OF WEST EDGE OF NEW
 JV3729'HIGHWAY AND 4-1/2 FEET SOUTH-SOUTHWEST OF WITNESS POST.  THE MARK
 JV3729'PROJECTS 4 INCHES AND THE DISK IS STAMPED ANSVILLE 1957.
 JV3729'
 JV3729'REFERENCE MARK NO. 1 IS 39 FEET WEST OF WEST EDGE OF NEW
 JV3729'HIGHWAY AND 75 FEET NORTH-NORTHWEST OF POWERLINE POLE.  THE MARK
 JV3729'PROJECTS 4 INCHES AND THE DISK IS STAMPED ANSVILLE NO 1 1957.
 JV3729'
 JV3729'REFERENCE MARK NO. 2 IS 108 FEET EAST OF POWERLINE POLE.  THE
 JV3729'MARK PROJECTS 4 INCHES AND THE DISK IS STAMPED ANSVILLE NO 2 1957.
 JV3729'
 JV3729'AZIMUTH MARK IS 24-1/2 FEET SOUTHWEST OF APPROXIMATE CENTERLINE
 JV3729'OF ROAD, 2-1/2 FEET EAST-NORTHEAST OF FENCELINE AND 1 FOOT
 JV3729'SOUTH-SOUTHEAST OF WITNESS POST.  THE MARK PROJECTS 3 INCHES AND
 JV3729'THE DISK IS STAMPED ANSVILLE 1957.
 JV3729'
 JV3729'TO REACH FROM THE JUNCTION OF WEST BOUND U.S. HIGHWAY NO. 40 AND
 JV3729'NORTH BOUND U.S. HIGHWAY NO. 11 IN HAGERSTOWN, GO NORTH ON
 JV3729'U.S. HIGHWAY NO. 11 FOR 3.0 MILES TO ROAD LEFT.  TURN LEFT AND
 JV3729'GO WEST ON SURFACED ROAD FOR 0.75 MILE TO NEW ROAD
 JV3729'CONSTRUCTION.  CROSS NEW ROAD CONSTRUCTION AND GO 0.05 MILE.
 JV3729'TURN RIGHT AND GO 0.05 MILE TO STATION ON RIGHT AS DESCRIBED.
 JV3729'CONTINUE WESTERLY ON DIRT ROAD FOR 0.2 MILE TO AZIMUTH MARK ON
 JV3729'LEFT (SOUTH) SIDE OF ROAD AS DESCRIBED.
 JV3729
 JV3729                          STATION RECOVERY (1961)
 JV3729
 JV3729'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1961
 JV3729'STATION AND AZIMUTH MARK WERE RECOVERED AS DESCRIBED AND IN GOOD
 JV3729'CONDITION.  REFERENCE MARKS NO. 1 AND 2 HAD BEEN DESTROYED BY
 JV3729'CONSTRUCTION.  A NEW STATION ANSVILLE 2 1961 WAS ESTABLISHED AND
 JV3729'REFERENCE MARK NO. 3 AND 4 WERE SET AT THIS TIME.  SEE
 JV3729'DESCRIPTION.
 JV3729'
 JV3729'STATION WAS DESTROYED AFTER ANSVILLE 2 WAS ESTABLISHED IN LINE
 JV3729'WITH STATION AND AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3329 ***********************************************************************
 JV3329  DESIGNATION -  ANSVILLE 2
 JV3329  PID         -  JV3329
 JV3329  STATE/COUNTY-  MD/WASHINGTON
 JV3329  COUNTRY     -  US
 JV3329  USGS QUAD   -  HAGERSTOWN (2016)
 JV3329
 JV3329                         *CURRENT SURVEY CONTROL
 JV3329  ______________________________________________________________________
 JV3329* NAD 83(1986) POSITION- 39 41 24.47   (N) 077 44 00.59   (W)   HD_HELD1
 JV3329* NAVD 88 ORTHO HEIGHT -   205.48  (+/-2cm)      674.1   (feet) VERTCON3
 JV3329  ______________________________________________________________________
 JV3329  GEOID HEIGHT    -        -34.244 (meters)                     GEOID18
 JV3329  VERT ORDER      -  THIRD (See Below)
 JV3329
 JV3329.The horizontal coordinates were determined by differentially corrected
 JV3329.hand held GPS observations or other comparable positioning techniques
 JV3329.and have an estimated accuracy of +/- 3 meters.
 JV3329
 JV3329.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3329.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3329
 JV3329.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3329.GEOID18 height accuracy estimate available here.
 JV3329
 JV3329.The vertical order pertains to the NGVD 29 superseded value.
 JV3329
 JV3329.Click photographs - Photos may exist for this station.
 JV3329
 JV3329;                    North         East    Units  Estimated Accuracy
 JV3329;SPC MD       -   224,877.9     337,079.1     MT  (+/- 3 meters HH1 GPS) 
 JV3329
 JV3329_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6560196938(NAD 83)
 JV3329
 JV3329                          SUPERSEDED SURVEY CONTROL
 JV3329
 JV3329  NGVD 29 (??/??/??)  205.67   (m)          674.8    (f) RESET       3  
 JV3329
 JV3329.Superseded values are not recommended for survey control.
 JV3329
 JV3329.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3329.See file dsdata.pdf to determine how the superseded data were derived.
 JV3329
 JV3329_MARKER: DS = TRIANGULATION STATION DISK
 JV3329_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3329_SP_SET: PARKWAY
 JV3329_STAMPING: ANSVILLE 2 1961
 JV3329_MARK LOGO: CGS
 JV3329_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3329
 JV3329  HISTORY     - Date     Condition        Report By
 JV3329  HISTORY     - 1961     MONUMENTED       MDSRC
 JV3329
 JV3329                          STATION DESCRIPTION
 JV3329
 JV3329'DESCRIBED BY MD STATE ROADS COMM 1961
 JV3329'5.3 MI N FROM HAGERSTOWN.
 JV3329'STATION IS LOCATED ABOUT 3.3 MILES NORTH OF THE CENTER OF HAGERSTOWN,
 JV3329'ABOUT 2.0 MILES SOUTH OF THE MARYLAND-PENNSYLVANIA LINE, ALONG
 JV3329'U.S. ROUTE 11 (INTERSTATE ROUTE 81), 48 FEET WEST OF THE CENTERLINE
 JV3329'OF THE NORTHBOUND LNAE OF U.S. ROUTE 11, 54 FEET EAST OF THE
 JV3329'CENTERLINE OF SOUTHBOUND LANE, 96.0 FEET NORTHEAST OF THE
 JV3329'NORTHWEST CORNER OF THE SOUTHBOUND LANE BRIDGE AND 120 FEET
 JV3329'NORTHWEST OF THE NORTHWEST CORNER OF NORTHBOUND LANE BRIDGE,
 JV3329'AND SET IN THE CENTER OF THE PARKWAY APPROXIMATELY 135 FEET
 JV3329'NORTH OF THE CENTER OF MARTIN ROAD INTERCHANGE, FLUSH TO THE
 JV3329'GROUND.  TO REACH THE STATION FROM THE JUNCTION OF U.S. ROUTE
 JV3329'40 AND U.S. ROUTE 11 (0.7 MILE WEST OF THE CORPORATE LIMITS
 JV3329'OF HAGERSTOWN), PROCEED NORTH ALONG U.S. ROUTE 11 FOR 3.3 MILES
 JV3329'TO THE MARTIN ROAD INTERCHANGE AND STATION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3960 ***********************************************************************
 JV3960  DESIGNATION -  ANSVILLE 2 RESET
 JV3960  PID         -  JV3960
 JV3960  STATE/COUNTY-  MD/WASHINGTON
 JV3960  COUNTRY     -  US
 JV3960  USGS QUAD   -  HAGERSTOWN (2016)
 JV3960
 JV3960                         *CURRENT SURVEY CONTROL
 JV3960  ______________________________________________________________________
 JV3960* NAD 83(1991) POSITION- 39 41 24.47375(N) 077 44 00.59289(W)   NO CHECK
 JV3960* NAVD 88 ORTHO HEIGHT -   205.734 (meters)      674.98  (feet) ADJUSTED
 JV3960  ______________________________________________________________________
 JV3960  GEOID HEIGHT    -        -34.244 (meters)                     GEOID18
 JV3960  LAPLACE CORR    -          2.96  (seconds)                    DEFLEC18
 JV3960  DYNAMIC HEIGHT  -        205.612 (meters)      674.58  (feet) COMP
 JV3960  MODELED GRAVITY -    980,033.7   (mgal)                       NAVD 88
 JV3960
 JV3960  HORZ ORDER      -  THIRD
 JV3960  VERT ORDER      -  FIRST     CLASS II
 JV3960
 JV3960.The horizontal coordinates were established by classical geodetic methods
 JV3960.and adjusted by the National Geodetic Survey in January 1992.
 JV3960
 JV3960.No horizontal observational check was made to the station.
 JV3960
 JV3960.The orthometric height was determined by differential leveling and
 JV3960.adjusted by the NATIONAL GEODETIC SURVEY
 JV3960.in June 1991.
 JV3960
 JV3960.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3960.GEOID18 height accuracy estimate available here.
 JV3960
 JV3960.Click photographs - Photos may exist for this station.
 JV3960
 JV3960.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3960
 JV3960.The dynamic height is computed by dividing the NAVD 88
 JV3960.geopotential number by the normal gravity value computed on the
 JV3960.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3960.degrees latitude (g = 980.6199 gals.).
 JV3960
 JV3960.The modeled gravity was interpolated from observed gravity values.
 JV3960
 JV3960. The following values were computed from the NAD 83(1991) position.
 JV3960
 JV3960;                    North         East     Units Scale Factor Converg.
 JV3960;SPC MD       -   224,878.023   337,079.048   MT  1.00005084   -0 27 37.3
 JV3960;SPC MD       -   737,787.31  1,105,900.18   sFT  1.00005084   -0 27 37.3
 JV3960;SPC WV N     -   133,614.994   751,509.409   MT  0.99994137   +1 07 35.9
 JV3960;SPC WV N     -   438,368.53  2,465,577.12   sFT  0.99994137   +1 07 35.9
 JV3960;UTM  18      - 4,396,938.137   265,601.600   MT  1.00027648   -1 44 47.4
 JV3960
 JV3960!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3960!SPC MD       -   0.99997310  x   1.00005084  =   1.00002394
 JV3960!SPC WV N     -   0.99997310  x   0.99994137  =   0.99991447
 JV3960!UTM  18      -   0.99997310  x   1.00027648  =   1.00024957
 JV3960
 JV3960_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6560196938(NAD 83)
 JV3960
 JV3960                          SUPERSEDED SURVEY CONTROL
 JV3960
 JV3960  NAD 83(1986)-  39 41 24.47290(N)    077 44 00.60402(W) AD(       ) 3
 JV3960  NAD 27      -  39 41 24.12370(N)    077 44 01.62570(W) AD(       ) 3
 JV3960  NGVD 29 (??/??/??)  205.94   (m)          675.7    (f) RESET       3  
 JV3960  NGVD 29             205.90   (m)          675.5    (f) LEVELING    3  
 JV3960
 JV3960.Superseded values are not recommended for survey control.
 JV3960
 JV3960.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3960.See file dsdata.pdf to determine how the superseded data were derived.
 JV3960
 JV3960_MARKER: DH = HORIZONTAL CONTROL DISK
 JV3960_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3960_STAMPING: ANSVILLE 2 1961 1978
 JV3960_MARK LOGO: NGS
 JV3960_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3960+STABILITY: SURFACE MOTION
 JV3960
 JV3960  HISTORY     - Date     Condition        Report By
 JV3960  HISTORY     - 1961     MONUMENTED       CGS
 JV3960  HISTORY     - 1976     MARK NOT FOUND   NGS
 JV3960  HISTORY     - 1978     SEE DESCRIPTION  NGS
 JV3960  HISTORY     - 1978     GOOD             NGS
 JV3960
 JV3960                          STATION DESCRIPTION
 JV3960
 JV3960'DESCRIBED BY COAST AND GEODETIC SURVEY 1961
 JV3960'STATION IS LOCATED ABOUT 3.3 MILES NORTH OF THE CENTER OF
 JV3960'HAGERSTOWN, ABOUT 2.0 MILES SOUTH OF THE MARYLAND-PENNSYLVANIA LINE,
 JV3960'ALONG U. S. ROUTE 11 (INTERSTATE ROUTE 81).  IT IS SET IN THE
 JV3960'CENTER OF THE PARKWAY APPROXIMATELY 135 FEET NORTH OF THE CENTER
 JV3960'OF MARTIN ROAD INTERCHANGE, 48 FEET WEST OF THE CENTERLINE OF THE
 JV3960'NORTHBOUND LANE OF U.S. ROUTE 11, 54 FEET EAST AT THE
 JV3960'CENTERLINE OF SOUTHBOUND LANE, 96.0 FEET NORTHEAST OF NORTHWEST
 JV3960'CORNER OF THE SOUTHBOUND LANE BRIDGE AND 120 FEET NORTHWEST
 JV3960'OF THE NORTHWEST CORNER OF NORTHBOUND LANE BRIDGE.  THE MARK IS A
 JV3960'STANDARD U.S.C. AND G.S. TRIANGULATION DISK SET IN
 JV3960'CONCRETE FLUSH TO THE GROUND AND STAMPED ANSVILLE 2 1961.
 JV3960'
 JV3960'REFERENCE MARK 3 IS SET FLUSH IN THE NORTHWEST CORNER OF THE
 JV3960'NORTHBOUND LANE BRIDGE OVER MARTIN ROAD, 14.0 FEET WEST OF THE
 JV3960'CENTERLINE OF THE NORTHBOUND LANE AND STAMPED ANSVILLE 2 NO 3 1961.
 JV3960'
 JV3960'REFERENCE MARK 4 IS SET FLUSH IN THE NORTHWEST CORNER OF THE
 JV3960'SOUTHBOUND LANE BRIDGE OVER MARTIN ROAD, 19.0 FEET WEST OF THE
 JV3960'CENTERLINE OF SOUTHBOUND LANE AND STAMPED ANSVILLE 2 NO 4 1961.
 JV3960'
 JV3960'THE AZIMUTH MARK IS APPROXIMATELY 800 FEET WEST OF THE INTERCHANGE
 JV3960'ALONG MARTIN ROAD, 24.5 FEET SOUTHWEST OF THE APPROXIMATE
 JV3960'CENTERLINE OF MARTIN ROAD, 2.5 FEET NORTHEAST OF THE FENCE LINE
 JV3960'AND 1 FOOT SOUTHEAST OF A WITNESS POST.  THE MARK PROJECTS 3
 JV3960'INCHES, AND THE DISK IS STAMPED ANSVILLE 1957.
 JV3960'
 JV3960'TO REACH THE STATION FROM THE JUNCTION OF U.S. ROUTE 40 AND
 JV3960'U.S. ROUTE 11 (0.7 MILE WEST OF THE CORPORATE LIMITS OF
 JV3960'HAGERSTOWN), PROCEED NORTH ALONG U.S. ROUTE 11 FOR 3.3 MILES TO
 JV3960'THE MARTIN ROAD INTERCHANGE AND STATION AS DESCRIBED.  TO REACH
 JV3960'THE AZIMUTH MARK FROM THE CENTER OF THE INTERCHANGE ON MARTIN
 JV3960'ROAD, PROCEED WEST ON MARTIN ROAD FOR 0.15 MILE TO MARK ON THE
 JV3960'LEFT AS DESCRIBED.
 JV3960'
 JV3960'NOTE--A DETAILED DESCRIPTION TO REACH THE AZIMUTH MARK FROM THE
 JV3960'STATION WAS NOT MADE AT THIS TIME, AS ADDITIONAL RAMPS ARE SOON
 JV3960'TO BE CONSTRUCTED FOR ACCESS TO MARTIN ROAD.  THE PRESENT RAMPS
 JV3960'PERMIT ONLY NORTHBOUND EXIT FROM, AND SOUTHBOUND ACCESS TO
 JV3960'U.S. ROUTE 11.
 JV3960
 JV3960                          STATION RECOVERY (1976)
 JV3960
 JV3960'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (AMS)
 JV3960'STATION MARK SEARCHED FOR BUT NOT FOUND.
 JV3960'AZIMUTH MARK NOT SEARCHED FOR.
 JV3960'REFERENCE MARKS 3 AND 4 RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV3960
 JV3960                          STATION RECOVERY (1978)
 JV3960
 JV3960'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (CLN)
 JV3960'THE STATION SURFACE MARK AND REFERENCE MARK 4 WERE FOUND DESTROYED.
 JV3960'
 JV3960'THE STATION SUB-SURFACE MARK AND REFERENCE MARK 3 WERE FOUND IN GOOD
 JV3960'CONDITION.  THE AZIMUTH MARK WAS SEARCHED FOR BUT NOT FOUND.  THERE
 JV3960'HAS BEEN SEVERAL NEW HOUSES CONSTRUCTED IN THE AREA AND IT IS
 JV3960'BELIEVED THE AZIMUTH MARK WAS DESTROYED BY THE CONSTRUCTION.  A
 JV3960'NEW STATION SURFACE DISK WAS SET DIRECTLY OVER THE OLD SUB-SURFACE
 JV3960'DISK.  A NEW REFERENCE MARK 5 WAS SET IN THE SAME DRILL HOLE
 JV3960'AS THE OLD REFERENCE MARK 4 WAS SET.  THE ANGLES AND DISTANCES
 JV3960'WERE WITHIN CLOSE AGREEMENT WITH THE PREVIOUS DESCRIPTION.
 JV3960'
 JV3960'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV3960'
 JV3960'THE STATION IS LOCATED ABOUT 3 MILES NORTH OF HAGERSTOWN, 2 MILES
 JV3960'SOUTH OF THE PENNSYLVANIA-MARYLAND STATE LINE AND IN THE MEDIUM
 JV3960'STRIP OF INTERSTATE HIGHWAY 81.
 JV3960'
 JV3960'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 81 AND U.S.
 JV3960'HIGHWAY 40 IN THE WEST PART OF HAGERSTOWN, GO NORTH ON INTERSTATE
 JV3960'HIGHWAY 81 FOR 2.7 MILES TO A BRIDGE OVER MAUGANS AVENUE AND THE
 JV3960'STATION ON THE NORTH SIDE OF THE BRIDGE.
 JV3960'
 JV3960'THE STATION SURFACE MARK IS A STANDARD DISK STAMPED ANSVILLE 2 1961
 JV3960'1978, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 JV3960'PROJECTS 1-INCH.  THE SUB-SURFACE MARK IS A STANDARD DISK STAMPED
 JV3960'ANSVILLE 2 1961, SET IN THE TOP OF A 8-INCH MASS OF CONCRETE WHICH
 JV3960'IS 3-1/2 FEET BELOW THE SURFACE.  IT IS 174 FEET NORTH OF THE
 JV3960'INTERSECTION OF INTERSTATE HIGHWAY 81 AND MAUGANS AVENUE, 119.5
 JV3960'FEET NORTH-NORTHWEST OF THE NORTHWEST CORNER OF THE BRIDGE FOR THE
 JV3960'NORTH BOUND LANE OF THE HIGHWAY, 54 FEET EAST OF THE CENTER OF THE
 JV3960'SOUTH BOUND LANE, 47.5 FEET WEST OF THE CENTER OF THE NORTH BOUND
 JV3960'LANE, 3 FEET EAST OF THE EAST EDGE OF A MOUND OF DIRT IN THE
 JV3960'CENTER OF THE MEDIUM STRIP AND 1.3 FEET SOUTHEAST OF A WITNESS
 JV3960'POST.
 JV3960'
 JV3960'REFERENCE MARK 3 IS A STANDARD DISK STAMPED ANSVILLE 2 NO 3 1961, SET
 JV3960'IN A DRILL HOLE IN THE NORTHWEST CORNER OF THE BRIDGE FOR THE NORTH
 JV3960'BOUND LANE OF THE HIGHWAY.  IT IS 121 FEET SOUTHEAST OF THE WITNESS
 JV3960'POST, 18 FEET WEST OF THE CENTER OF THE NORTH BOUND LANE, 12 FEET
 JV3960'NORTH OF THE FIRST EXPANSION JOINT ON THE NORTH SIDE OF THE
 JV3960'BRIDGE AND 0.4 FOOT EAST OF THE EAST SIDE OF THE WEST PARAPET
 JV3960'WALL OF THE BRIDGE.
 JV3960'
 JV3960'REFERENCE MARK 5 IS A STANDARD DISK STAMPED ANSVILLE 2 1961 NO 5
 JV3960'1978, SET IN A DRILL HOLE IN THE NORTHWEST CORNER OF THE BRIDGE FOR
 JV3960'THE SOUTH BOUND LANE OF THE HIGHWAY.  IT IS 98 FEET SOUTHWEST OF
 JV3960'THE WITNESS POST, 25 FEET WEST OF THE CENTER OF THE SOUTH BOUND
 JV3960'LANE AND EAST OF THE WEST WALL.
 JV3960'
 JV3960'THE TWO WATER TANKS MAY SERVE AS AN AZIMUTH MARK FOR THE STATION, SEE
 JV3960'DESCRIPTIONS THEREOF.
 JV3960'
 JV3960'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1-3/4 MILES
 JV3960'SOUTHEAST OF MAUGAMSVILLE.
 JV3960
 JV3960                          STATION RECOVERY (1978)
 JV3960
 JV3960'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
 JV3960'3 MI N FROM HAGERSTOWN.
 JV3960'LOCATED 2.7 MILES NORTH ALONG INTERSTATE HIGHWAY 81 FROM ITS JUNCTION
 JV3960'WITH U.S. HIGHWAY 40, 119.5 FEET NORTH NORTHWEST OF THE NORTHWEST
 JV3960'CORNER OF THE BRIDGE FOR THE NORTH BOUND LANE 54 FEET EAST OF THE
 JV3960'CENTER OF THE SOUTH BOUND LANE, 42.5 FEET WEST OF THE CENTER OF THE
 JV3960'NORTH BOUND LANE, 3 FEET EAST OF THE EAST EDGE OF A MOUND OF DIRT
 JV3960'SEPERATING THE NORTH AND SOUTH BOUND LANES AND IN THE MEDIUM STRIP
 JV3960'FOR THE HIGHWAY AND JUST NORTH OF A POINT WHERE MAOGANS AVE. PASSES
 JV3960'UNDER THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3330 ***********************************************************************
 JV3330  DESIGNATION -  ANSVILLE 2 RM 3
 JV3330  PID         -  JV3330
 JV3330  STATE/COUNTY-  MD/WASHINGTON
 JV3330  COUNTRY     -  US
 JV3330  USGS QUAD   -  HAGERSTOWN (2016)
 JV3330
 JV3330                         *CURRENT SURVEY CONTROL
 JV3330  ______________________________________________________________________
 JV3330* NAD 83(1986) POSITION- 39 41 23.39   (N) 077 43 59.95   (W)   HD_HELD1
 JV3330* NAVD 88 ORTHO HEIGHT -   206.269 (meters)      676.73  (feet) ADJUSTED
 JV3330  ______________________________________________________________________
 JV3330  GEOID HEIGHT    -        -34.243 (meters)                     GEOID18
 JV3330  DYNAMIC HEIGHT  -        206.148 (meters)      676.34  (feet) COMP
 JV3330  MODELED GRAVITY -    980,033.6   (mgal)                       NAVD 88
 JV3330
 JV3330  VERT ORDER      -  FIRST     CLASS II
 JV3330
 JV3330.The horizontal coordinates were determined by differentially corrected
 JV3330.hand held GPS observations or other comparable positioning techniques
 JV3330.and have an estimated accuracy of +/- 3 meters.
 JV3330
 JV3330.The orthometric height was determined by differential leveling and
 JV3330.adjusted by the NATIONAL GEODETIC SURVEY
 JV3330.in June 1991.
 JV3330
 JV3330.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3330.GEOID18 height accuracy estimate available here.
 JV3330
 JV3330.Click photographs - Photos may exist for this station.
 JV3330
 JV3330.The dynamic height is computed by dividing the NAVD 88
 JV3330.geopotential number by the normal gravity value computed on the
 JV3330.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3330.degrees latitude (g = 980.6199 gals.).
 JV3330
 JV3330.The modeled gravity was interpolated from observed gravity values.
 JV3330
 JV3330;                    North         East    Units  Estimated Accuracy
 JV3330;SPC MD       -   224,844.5     337,094.1     MT  (+/- 3 meters HH1 GPS) 
 JV3330
 JV3330_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6561596904(NAD 83)
 JV3330
 JV3330                          SUPERSEDED SURVEY CONTROL
 JV3330
 JV3330  NGVD 29 (??/??/??)  206.47   (m)          677.4    (f) RESET       3  
 JV3330
 JV3330.Superseded values are not recommended for survey control.
 JV3330
 JV3330.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3330.See file dsdata.pdf to determine how the superseded data were derived.
 JV3330
 JV3330_MARKER: DR = REFERENCE MARK DISK
 JV3330_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3330_SP_SET: BRIDGE
 JV3330_STAMPING: ANSVILLE 2 NO 3 1961
 JV3330_MARK LOGO: CGS
 JV3330_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3330
 JV3330  HISTORY     - Date     Condition        Report By
 JV3330  HISTORY     - 1961     MONUMENTED       MDSRC
 JV3330  HISTORY     - 1979     GOOD             NGS
 JV3330
 JV3330                          STATION DESCRIPTION
 JV3330
 JV3330'DESCRIBED BY MD STATE ROADS COMM 1961
 JV3330'5.3 MI N FROM HAGERSTOWN.
 JV3330'STATION IS LOCATED ABOUT 3.3 MILES NORTH OF THE CENTER OF
 JV3330'HAGERSTOWN, ABOUT 2.0 MILES SOUTH OF THE MARYLAND-PENNSYLVANIA
 JV3330'LINE, ALONG U.S. ROUTE 11 (INTERCHANGE ROUTE 81), AND SET FLUSH
 JV3330'IN THE NORTHWEST CORNER OF THE NORTHBOUND LANE BRIDGE OVER
 JV3330'MARTIN ROAD, 14.0 FEET WEST OF THE CENTERLINE OF THE NORTHBOUND
 JV3330'LANE.
 JV3330
 JV3330                          STATION RECOVERY (1979)
 JV3330
 JV3330'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3330'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3332 ***********************************************************************
 JV3332  DESIGNATION -  ANSVILLE 2 RM 4
 JV3332  PID         -  JV3332
 JV3332  STATE/COUNTY-  MD/WASHINGTON
 JV3332  COUNTRY     -  US
 JV3332  USGS QUAD   -  HAGERSTOWN (2016)
 JV3332
 JV3332                         *CURRENT SURVEY CONTROL
 JV3332  ______________________________________________________________________
 JV3332* NAD 83(1986) POSITION- 39 41 23.81   (N) 077 44 01.44   (W)   HD_HELD1
 JV3332* NAVD 88 ORTHO HEIGHT -   205.95  (+/-2cm)      675.7   (feet) VERTCON3
 JV3332  ______________________________________________________________________
 JV3332  GEOID HEIGHT    -        -34.244 (meters)                     GEOID18
 JV3332  VERT ORDER      -  THIRD (See Below)
 JV3332
 JV3332.The horizontal coordinates were determined by differentially corrected
 JV3332.hand held GPS observations or other comparable positioning techniques
 JV3332.and have an estimated accuracy of +/- 3 meters.
 JV3332
 JV3332.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3332.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3332
 JV3332.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3332.GEOID18 height accuracy estimate available here.
 JV3332
 JV3332.The vertical order pertains to the NGVD 29 superseded value.
 JV3332
 JV3332.Click photographs - Photos may exist for this station.
 JV3332
 JV3332;                    North         East    Units  Estimated Accuracy
 JV3332;SPC MD       -   224,857.7     337,058.7     MT  (+/- 3 meters HH1 GPS) 
 JV3332
 JV3332_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6558096918(NAD 83)
 JV3332
 JV3332                          SUPERSEDED SURVEY CONTROL
 JV3332
 JV3332  NGVD 29 (??/??/??)  206.14   (m)          676.3    (f) RESET       3  
 JV3332
 JV3332.Superseded values are not recommended for survey control.
 JV3332
 JV3332.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3332.See file dsdata.pdf to determine how the superseded data were derived.
 JV3332
 JV3332_MARKER: DR = REFERENCE MARK DISK
 JV3332_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3332_SP_SET: BRIDGE
 JV3332_STAMPING: ANSVILLE 2 NO 4 1961
 JV3332_MARK LOGO: CGS
 JV3332_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3332
 JV3332  HISTORY     - Date     Condition        Report By
 JV3332  HISTORY     - 1961     MONUMENTED       MDSRC
 JV3332  HISTORY     - 1979     MARK NOT FOUND   NGS
 JV3332  HISTORY     - 20071220 MARK NOT FOUND   GEOCAC
 JV3332
 JV3332                          STATION DESCRIPTION
 JV3332
 JV3332'DESCRIBED BY MD STATE ROADS COMM 1961
 JV3332'5.3 MI N FROM HAGERSTOWN.
 JV3332'STATION IS LOCATED ABOUT 3.3 MILES NORTH OF THE CENTER OF HAGERSTOWN,
 JV3332'ABOUT 2.0 MILES SOUTH OF THE MARYLAND-PENNSYLVANIA LINE, ALONG
 JV3332'U.S. ROUTE 11 (INTERCHANGE ROUTE 81), AND SET FLUSH IN THE
 JV3332'NORTHWEST CORNER OF THE SOUTHBOUND LANE BRIDGE OVER MARTIN
 JV3332'ROAD 19.0 FEET WEST OF THE CENTERLINE OF SOUTHBOUND LANE.
 JV3332
 JV3332                          STATION RECOVERY (1979)
 JV3332
 JV3332'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3332'NOTE--A GUARDRAIL HAS BEEN BUILT OVER THE TOP OF IT.
 JV3332
 JV3332                          STATION RECOVERY (2007)
 JV3332
 JV3332'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV3332'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3328 ***********************************************************************
 JV3328  DESIGNATION -  ANSVILLE AZ MK
 JV3328  PID         -  JV3328
 JV3328  STATE/COUNTY-  MD/WASHINGTON
 JV3328  COUNTRY     -  US
 JV3328  USGS QUAD   -  HAGERSTOWN (2016)
 JV3328
 JV3328                         *CURRENT SURVEY CONTROL
 JV3328  ______________________________________________________________________
 JV3328* NAD 83(1986) POSITION- 39 41 25.     (N) 077 44 12.     (W)   SCALED
 JV3328* NAVD 88 ORTHO HEIGHT -   196.416 (meters)      644.41  (feet) ADJUSTED
 JV3328  ______________________________________________________________________
 JV3328  GEOID HEIGHT    -        -34.249 (meters)                     GEOID18
 JV3328  DYNAMIC HEIGHT  -        196.300 (meters)      644.03  (feet) COMP
 JV3328  MODELED GRAVITY -    980,034.0   (mgal)                       NAVD 88
 JV3328
 JV3328  VERT ORDER      -  SECOND    CLASS 0
 JV3328
 JV3328.The horizontal coordinates were scaled from a map and have
 JV3328.an estimated accuracy of +/- 6 seconds.
 JV3328
 JV3328.The orthometric height was determined by differential leveling and
 JV3328.adjusted by the NATIONAL GEODETIC SURVEY
 JV3328.in June 1991.
 JV3328
 JV3328.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3328.GEOID18 height accuracy estimate available here.
 JV3328
 JV3328.Click photographs - Photos may exist for this station.
 JV3328
 JV3328.The dynamic height is computed by dividing the NAVD 88
 JV3328.geopotential number by the normal gravity value computed on the
 JV3328.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3328.degrees latitude (g = 980.6199 gals.).
 JV3328
 JV3328.The modeled gravity was interpolated from observed gravity values.
 JV3328
 JV3328;                    North         East    Units  Estimated Accuracy
 JV3328;SPC MD       -   224,900.      336,810.      MT  (+/- 180 meters Scaled)
 JV3328
 JV3328_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ653969(NAD 83)
 JV3328
 JV3328                          SUPERSEDED SURVEY CONTROL
 JV3328
 JV3328  NGVD 29 (11/26/84)  196.612  (m)          645.05   (f) ADJUSTED    2 0
 JV3328
 JV3328.Superseded values are not recommended for survey control.
 JV3328
 JV3328.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3328.See file dsdata.pdf to determine how the superseded data were derived.
 JV3328
 JV3328_MARKER: DZ = AZIMUTH MARK DISK
 JV3328_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3328_STAMPING: ANSVILLE 1957
 JV3328_MARK LOGO: CGS
 JV3328_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3328+STABILITY: SURFACE MOTION
 JV3328
 JV3328  HISTORY     - Date     Condition        Report By
 JV3328  HISTORY     - 1957     MONUMENTED       CGS
 JV3328  HISTORY     - 20071220 MARK NOT FOUND   GEOCAC
 JV3328
 JV3328                          STATION DESCRIPTION
 JV3328
 JV3328'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV3328'2.4 MI S FROM MD-PA STATE LINE.
 JV3328'2.6 MILES SOUTH ALONG THE PROPOSED SITE OF THE NEW HIGHWAY FROM
 JV3328'THE MARYLAND-PENNSYLVANIA STATE LINE, 24-1/2 FEET SOUTHWEST OF
 JV3328'THE APPROXIMATE CENTERLINE OF THE ROAD, 2-1/2 FEET EAST-NORTHEAST
 JV3328'OF A FENCELINE, AND 1 FOOT SOUTH-SOUTHEAST OF A WITNESS POST.
 JV3328'A STANDARD AZIMUTH-MARK DISK, STAMPED ANSVILLE 1957 AND SET IN
 JV3328'THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE GROUND.
 JV3328
 JV3328                          STATION RECOVERY (2007)
 JV3328
 JV3328'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV3328'WIDENED ROAD, NO FENCELINE, NO W.P. AND EVIDENCE OF FILL OVER THE MARK
 JV3328'(IF PRESENT).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6195 ***********************************************************************
 DN6195  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6195  DESIGNATION -  ANTEGO
 DN6195  PID         -  DN6195
 DN6195  STATE/COUNTY-  MD/CECIL
 DN6195  COUNTRY     -  US
 DN6195  USGS QUAD   -  BAY VIEW (2016)
 DN6195
 DN6195                         *CURRENT SURVEY CONTROL
 DN6195  ______________________________________________________________________
 DN6195* NAD 83(2011) POSITION- 39 38 45.15824(N) 075 53 29.58625(W)   ADJUSTED
 DN6195* NAD 83(2011) ELLIP HT-    35.802 (meters)        (06/27/12)   ADJUSTED
 DN6195* NAD 83(2011) EPOCH   -  2010.00
 DN6195* NAVD 88 ORTHO HEIGHT -    68.90  (meters)      226.0   (feet) GPS OBS
 DN6195  ______________________________________________________________________
 DN6195  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6195  GEOID HEIGHT    -        -33.072 (meters)                     GEOID03
 DN6195  GEOID HEIGHT    -        -33.093 (meters)                     GEOID18
 DN6195  NAD 83(2011) X  -  1,198,781.326 (meters)                     COMP
 DN6195  NAD 83(2011) Y  - -4,769,571.898 (meters)                     COMP
 DN6195  NAD 83(2011) Z  -  4,047,810.648 (meters)                     COMP
 DN6195  LAPLACE CORR    -         -0.39  (seconds)                    DEFLEC18
 DN6195
 DN6195  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6195  Standards:
 DN6195         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6195            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6195  -------------------------------------------------------------------
 DN6195  NETWORK    0.49   1.00           0.22   0.17   0.51      0.08465058
 DN6195  -------------------------------------------------------------------
 DN6195  Click here for local accuracies and other accuracy information.
 DN6195
 DN6195.The horizontal coordinates were established by GPS observations
 DN6195.and adjusted by the National Geodetic Survey in June 2012.
 DN6195
 DN6195.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6195.been affixed to the stable North American tectonic plate. See 
 DN6195.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6195
 DN6195.The horizontal coordinates are valid at the epoch date displayed above
 DN6195.which is a decimal equivalence of Year/Month/Day.
 DN6195
 DN6195.The orthometric height was determined by GPS observations and a
 DN6195.high-resolution geoid model using precise GPS observation and
 DN6195.processing techniques.
 DN6195
 DN6195.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6195.GEOID18 height accuracy estimate available here.
 DN6195
 DN6195.Click photographs - Photos may exist for this station.
 DN6195
 DN6195.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6195
 DN6195.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6195
 DN6195.The ellipsoidal height was determined by GPS observations
 DN6195.and is referenced to NAD 83.
 DN6195
 DN6195. The following values were computed from the NAD 83(2011) position.
 DN6195
 DN6195;                    North         East     Units Scale Factor Converg.
 DN6195;SPC MD       -   220,289.170   495,143.294   MT  1.00004014   +0 41 44.5
 DN6195;SPC MD       -   722,732.05  1,624,482.62   sFT  1.00004014   +0 41 44.5
 DN6195;UTM  18      - 4,388,834.011   423,505.169   MT  0.99967204   -0 34 07.9
 DN6195
 DN6195!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6195!SPC MD       -   0.99999438  x   1.00004014  =   1.00003452
 DN6195!UTM  18      -   0.99999438  x   0.99967204  =   0.99966643
 DN6195
 DN6195_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2350588834(NAD 83)
 DN6195
 DN6195                          SUPERSEDED SURVEY CONTROL
 DN6195
 DN6195  NAD 83(2007)-  39 38 45.15855(N)    075 53 29.58695(W) AD(2002.00) 1
 DN6195  ELLIP H (02/23/12)   35.834  (m)                       GP(2002.00) 4 1
 DN6195
 DN6195.Superseded values are not recommended for survey control.
 DN6195
 DN6195.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6195.See file dsdata.pdf to determine how the superseded data were derived.
 DN6195
 DN6195_MARKER: DD = SURVEY DISK
 DN6195_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6195_STAMPING: ANTEGO 2008
 DN6195_MARK LOGO: MD-015
 DN6195_PROJECTION: FLUSH
 DN6195_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6195_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6195+STABILITY: SURFACE MOTION
 DN6195_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6195+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6195
 DN6195  HISTORY     - Date     Condition        Report By
 DN6195  HISTORY     - 20081204 MONUMENTED       GWS
 DN6195
 DN6195                          STATION DESCRIPTION
 DN6195
 DN6195'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6195'THE STATION IS LOCATED ABOUT 2.3 MI (3.7 KM) SOUTHWEST OF CHERRY HILL
 DN6195'AND ABOUT 3.4 MI (5.5 KM) NORTHEAST OF THE TOWN OF NORTH EAST.
 DN6195'
 DN6195'TO REACH THE STATION FROM THE JUNCTION OF ELKTON ROAD (ROUTE 279) AND
 DN6195'BLUE BALL ROAD (ROUTE 545), PROCEED NORTH ON BLUE BALL ROAD FOR 3.28
 DN6195'MI (5.3 KM) TO AN INTERSECTION.  TURN LEFT AND GO EAST ON LEEDS ROAD
 DN6195'FOR 0.65 MI (1.0 KM) TO A SIDE ROAD ON THE LEFT.  TURN LEFT AND GO
 DN6195'SOUTH ON DEAVER ROAD FOR 0.18 MI (0.3 KM) TO THE STATION ON THE RIGHT.
 DN6195'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6195'CONCRETE MONUMENT, APPROXIMATELY 188 FT (57.3 M) SOUTH OF THE SOUTH
 DN6195'ENTRANCE TO A SCHOOL, 79.7 FT (24.3 M) WEST-NORTHWEST OF A UTILITY
 DN6195'POLE, 82.3 FT (25.1 M) WEST OF THE WEST EDGE OF DEAVER ROAD AND 104.6
 DN6195'FT (31.9 M) SOUTHWEST OF A CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6502 ***********************************************************************
 JV6502  CBN         -  This is a Cooperative Base Network Control Station.
 JV6502  DESIGNATION -  ANTIETAM
 JV6502  PID         -  JV6502
 JV6502  STATE/COUNTY-  MD/WASHINGTON
 JV6502  COUNTRY     -  US
 JV6502  USGS QUAD   -  KEEDYSVILLE (2016)
 JV6502
 JV6502                         *CURRENT SURVEY CONTROL
 JV6502  ______________________________________________________________________
 JV6502* NAD 83(2011) POSITION- 39 28 24.19041(N) 077 44 39.90290(W)   ADJUSTED
 JV6502* NAD 83(2011) ELLIP HT-   119.625 (meters)        (06/27/12)   ADJUSTED
 JV6502* NAD 83(2011) EPOCH   -  2010.00
 JV6502* NAVD 88 ORTHO HEIGHT -   153.494 (meters)      503.59  (feet) ADJUSTED
 JV6502  ______________________________________________________________________
 JV6502  GEOID HEIGHT    -        -33.861 (meters)                     GEOID18
 JV6502  NAD 83(2011) X  -  1,046,542.940 (meters)                     COMP
 JV6502  NAD 83(2011) Y  - -4,817,820.556 (meters)                     COMP
 JV6502  NAD 83(2011) Z  -  4,033,099.143 (meters)                     COMP
 JV6502  LAPLACE CORR    -          5.68  (seconds)                    DEFLEC18
 JV6502  DYNAMIC HEIGHT  -        153.404 (meters)      503.29  (feet) COMP
 JV6502  MODELED GRAVITY -    980,036.7   (mgal)                       NAVD 88
 JV6502
 JV6502  VERT ORDER      -  SECOND    CLASS II
 JV6502
 JV6502  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6502  Standards:
 JV6502         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6502            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6502  -------------------------------------------------------------------
 JV6502  NETWORK    0.49   0.94           0.22   0.18   0.48     -0.08847694
 JV6502  -------------------------------------------------------------------
 JV6502  Click here for local accuracies and other accuracy information.
 JV6502
 JV6502.The horizontal coordinates were established by GPS observations
 JV6502.and adjusted by the National Geodetic Survey in June 2012.
 JV6502
 JV6502.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6502.been affixed to the stable North American tectonic plate. See 
 JV6502.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6502
 JV6502.The horizontal coordinates are valid at the epoch date displayed above
 JV6502.which is a decimal equivalence of Year/Month/Day.
 JV6502
 JV6502.The orthometric height was determined by differential leveling and
 JV6502.adjusted by the NATIONAL GEODETIC SURVEY
 JV6502.in June 1991.
 JV6502
 JV6502.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6502.GEOID18 height accuracy estimate available here.
 JV6502
 JV6502.Click photographs - Photos may exist for this station.
 JV6502
 JV6502.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6502
 JV6502.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6502
 JV6502.The ellipsoidal height was determined by GPS observations
 JV6502.and is referenced to NAD 83.
 JV6502
 JV6502.The dynamic height is computed by dividing the NAVD 88
 JV6502.geopotential number by the normal gravity value computed on the
 JV6502.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6502.degrees latitude (g = 980.6199 gals.).
 JV6502
 JV6502.The modeled gravity was interpolated from observed gravity values.
 JV6502
 JV6502. The following values were computed from the NAD 83(2011) position.
 JV6502
 JV6502;                    North         East     Units Scale Factor Converg.
 JV6502;SPC MD       -   200,821.269   335,946.138   MT  1.00000417   -0 28 02.0
 JV6502;SPC MD       -   658,861.11  1,102,183.29   sFT  1.00000417   -0 28 02.0
 JV6502;UTM  18      - 4,372,906.631   263,930.233   MT  1.00028620   -1 44 43.7
 JV6502
 JV6502!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6502!SPC MD       -   0.99998123  x   1.00000417  =   0.99998540
 JV6502!UTM  18      -   0.99998123  x   1.00028620  =   1.00026743
 JV6502
 JV6502_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6393072906(NAD 83)
 JV6502
 JV6502                          SUPERSEDED SURVEY CONTROL
 JV6502
 JV6502  NAD 83(2007)-  39 28 24.19061(N)    077 44 39.90340(W) AD(2002.00) 0
 JV6502  ELLIP H (02/10/07)  119.646  (m)                       GP(2002.00)    
 JV6502  ELLIP H (08/09/02)  119.661  (m)                       GP(       ) 3 2
 JV6502  ELLIP H (11/06/01)  119.659  (m)                       GP(       ) 4 1
 JV6502  ELLIP H (12/04/95)  119.588  (m)                       GP(       ) 4 1
 JV6502  NAD 83(1991)-  39 28 24.19051(N)    077 44 39.90349(W) AD(       ) B
 JV6502  ELLIP H (10/23/91)  119.588  (m)                       GP(       ) 4 1
 JV6502  NAVD 88             153.49   (m)          503.6    (f) LEVELING    3  
 JV6502  NGVD 29             153.69   (m)          504.2    (f) LEVELING    3  
 JV6502
 JV6502.Superseded values are not recommended for survey control.
 JV6502
 JV6502.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6502.See file dsdata.pdf to determine how the superseded data were derived.
 JV6502
 JV6502_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6502_SETTING: 66 = SET IN ROCK OUTCROP
 JV6502_STAMPING: ANTIETAM 1990
 JV6502_MARK LOGO: NGS
 JV6502_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6502_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6502+STABILITY: POSITION/ELEVATION WELL
 JV6502_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6502+SATELLITE: SATELLITE OBSERVATIONS - October 05, 2020
 JV6502
 JV6502  HISTORY     - Date     Condition        Report By
 JV6502  HISTORY     - 1990     MONUMENTED       MDSHA
 JV6502  HISTORY     - 19901010 GOOD             NGS
 JV6502  HISTORY     - 19901121 GOOD             NGS
 JV6502  HISTORY     - 19930404 GOOD             GREOMA
 JV6502  HISTORY     - 19950608 GOOD             NGS
 JV6502  HISTORY     - 19950625 GOOD             NGS
 JV6502  HISTORY     - 19990226 GOOD             GEOMET
 JV6502  HISTORY     - 20000327 GOOD             MDSHA
 JV6502  HISTORY     - 20010830 GOOD             NGS
 JV6502  HISTORY     - 20030616 GOOD             DEWDAV
 JV6502  HISTORY     - 20051027 GOOD             NAGEL
 JV6502  HISTORY     - 20071010 GOOD             GEOCAC
 JV6502  HISTORY     - 20090126 GOOD             NGS
 JV6502  HISTORY     - 20130414 GOOD             GEOCAC
 JV6502  HISTORY     - 20190920 GOOD             NGS
 JV6502  HISTORY     - 20201005 GOOD             NGS
 JV6502
 JV6502                          STATION DESCRIPTION
 JV6502
 JV6502'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 JV6502'THE STATION IS LOCATED ABOUT 1.8 KM (1.1 MI) NORTH OF SHARPSBURG, 12.0
 JV6502'MI (19.3 KM) SOUTH OF HAGERSTOWN, 19.3 KM (12.0 MI) EAST OF
 JV6502'MARTINSBURG AND ON THE GROUNDS OF ANTIETAM BATTLEFIELD VISITORS
 JV6502'CENTER.  THE PROPERTY IS OWNED BY THE UNITED STATES DEPARTMENT OF THE
 JV6502'INTERIOR (NATIONAL PARK SERVICE).
 JV6502'
 JV6502'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 65 AND
 JV6502'STATE HIGHWAY 34 IN THE TOWN OF SHARPSBURG, GO NORTH ON STATE HIGHWAY
 JV6502'65 FOR 1.4 KM (0.9 MI) TO THE ENTRANCE TO ANTIETAM BATTLEFIELD VISITOR
 JV6502'CENTER.  TURN RIGHT AND GO EAST FOR 0.24 KM (0.15 MI) TO THE STATION
 JV6502'ON THE RIGHT.
 JV6502'
 JV6502'THE STATION DISK IS SET IN A DRILL HOLE IN ROCK OUTCROP.  IT IS FT
 JV6502'32.16 (9.80 M) M NORTHEAST OF THE SOUTHEAST CORNER OF A MACADAM
 JV6502'PARKING AREA, 39.78 M (130.51 FT) SOUTHEAST OF A TREE AND 48.0 M
 JV6502'(157.5 FT) SOUTHWEST OF A FIRE HYDRANT.
 JV6502
 JV6502                          STATION RECOVERY (1990)
 JV6502
 JV6502'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6502'1.4 KM (0.9 MI) NORTHERLY ALONG STATE HIGHWAY 65 FROM THE JUNCTION OF
 JV6502'STATE HIGHWAY 34 IN SHARPSBURG, THENCE 0.2 KM (0.1 MI) NORTHEASTERLY
 JV6502'ALONG THE ENTRANCE ROAD TO THE ANTIETAM NATIONAL BATTLEFIELD VISITOR
 JV6502'CENTER, IN A 3 BY 6 FOOT AREA OF OUTCROPPING BEDROCK, 48.0 M
 JV6502'(157.5 FT) SOUTHWEST OF A FIRE HYDRANT, 43.2 M (141.7 FT) NORTHEAST
 JV6502'OF THE ROAD CENTER, 32.1 M (105.3 FT) NORTHEAST OF THE SOUTHEAST
 JV6502'CORNER OF A PARKING LOT, AND 0.6 M (2.0 FT) ABOVE THE LEVEL OF THE
 JV6502'PARKING LOT.
 JV6502
 JV6502                          STATION RECOVERY (1990)
 JV6502
 JV6502'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6502'THE STATION IS LOCATED ABOUT 19 KM (11.8 MI) SOUTH OF HAGERSTOWN, 1.5
 JV6502'KM (0.9 MI) NORTH OF SHARPSBURG, ON THE GROUNDS OF ANTIETAM
 JV6502'BATTLEFIELD, ABOUT 100 M (328.1 FT) SOUTH-SOUTHWEST OF THE ENTRANCE TO
 JV6502'THE VISITORS CENTER, ON THE WEST SIDE OF A SLOPING NORTHEAST-SOUTHWEST
 JV6502'RIDGE, AND IN AN UNMOWED AREA.  OWNERSHIP--US DEPARTMENT OF THE
 JV6502'INTERIOR (NATIONAL PARK SERVICE).  CONTACT SUPERINTENDENT RICHARD
 JV6502'RAMBUR, PHONE 301-432-7675, AT THE VISITORS CENTER BEFORE WORK.
 JV6502'
 JV6502'TO REACH FROM THE JUNCTION OF INTERSTATE HIGHWAY 70 AND STATE HIGHWAY
 JV6502'65 (EXIT 29) ON THE SOUTH SIDE OF HAGERSTOWN, GO SOUTH ON HIGHWAY 65
 JV6502'FOR 6.07 KM (3.77 MI) TO ITS JUNCTION WITH STATE HIGHWAY 68.  CONTINUE
 JV6502'SOUTH FOR 9.41 KM (5.85 MI) TO A PAVED ROAD LEFT AT BATTLEFIELD
 JV6502'ENTRANCE.  --ALSO REACHED FROM THE INTERSECTION OF STATE HIGHWAYS 65
 JV6502'AND 34 IN SHARPSBURG BY GOING NORTH ON STATE HIGHWAY 65 FOR 1.44 KM
 JV6502'(0.89 MI) TO THE BATTLEFIELD ENTRANCE ON THE RIGHT.--TURN LEFT (EAST)
 JV6502'ON DUNKER CHURCH ROAD FOR 0.09 KM (0.06 MI) TO A ROAD LEFT.  CONTINUE
 JV6502'AHEAD, EASTERLY, ON PAVED LANE FOR 0.13 KM (0.08 MI) TO SOUTH END OF
 JV6502'PARKING AREA AND THE STATION ON THE RIGHT.
 JV6502'
 JV6502'THE STATION IS SET IN A DRILL HOLE IN A 0.6 M (2.0 FT) X 1.5 M
 JV6502'(4.9 FT) ROCK OUTCROP PROJECTING 0.2 M (0.7 FT) AT ITS HIGHEST POINT.
 JV6502'IT IS 32.3 M (106.0 FT) EAST OF THE SOUTHEAST CURB CORNER OF THE
 JV6502'MACADAM PARKING LOT, 40.1 M (131.6 FT) SOUTH-SOUTHEAST OF A 35-CM OAK
 JV6502'TREE, 47.9 M (157.2 FT) SOUTHWEST OF A FIRE HYDRANT NEAR SOUTH END OF
 JV6502'THE VISITORS CENTER BUILDING, 33.9 M (111.2 FT) WEST-SOUTHWEST OF THE
 JV6502'CENTER ONE OF THREE SMALL TREES ON THE RIDGE, AND 19 M (62.3 FT)
 JV6502'SOUTHEAST OF THE MOW LINE.  DESCRIBED BY G.R. HEID.
 JV6502
 JV6502                          STATION RECOVERY (1993)
 JV6502
 JV6502'RECOVERY NOTE BY GREENHORNE-OMARA 1993
 JV6502'RECOVERED IN GOOD CONDITION.
 JV6502
 JV6502                          STATION RECOVERY (1995)
 JV6502
 JV6502'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (DMM)
 JV6502'RECOVERED AS DESCRIBED BY GRH IN 1990 WITH THE FOLLOWING CORRECTIONS.
 JV6502'
 JV6502'MR RAMBUR IS NO LONGER AT THE PARK.  WORK AT THE SITE SHOULD BE
 JV6502'COORDINATED WITH MR ED WENSCHHOF AT 301-432-2243.
 JV6502'
 JV6502'THERE IS A CARSONITE WITNESS SIGN JUST WEST OF THE ROCK OUTCROPPING.
 JV6502'THE AREA IN WHICH THE MONUMENT IS LOCATED IS NOW PART OF THE MOWED
 JV6502'AREA.
 JV6502
 JV6502                          STATION RECOVERY (1995)
 JV6502
 JV6502'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (CFS)
 JV6502'THE STATION IS LOCATED ABOUT 19 KM (11.80 MI) SOUTH OF HAGERSTOWN, 1.5
 JV6502'KM (0.95 MI) NORTH OF SHARPSBURG, ON THE GROUNDS OF ANTIETAM
 JV6502'BATTLEFIELD, ABOUT 100 M (328.1 FT) SOUTH-SOUTHWEST OF THE ENTRANCE TO
 JV6502'THE VISITORS CENTER, ON THE WEST SIDE OF A SLOPING NORTHEAST-SOUTHWEST
 JV6502'RIDGE.  OWNERSHIP--US DEPARTMENT OF THE INTERIOR, NATIONAL PARK
 JV6502'SERVICE.  CONTACT SUPERINTENDENT ED WENSCHHOF, PHONE 301-432-2243, AT
 JV6502'THE VISITORS CENTER BEFORE WORK.
 JV6502'
 JV6502'TO REACH FROM THE JUNCTION OF INTERSTATE HIGHWAY 70 AND STATE HIGHWAY
 JV6502'65 (EXIT 29) ON THE SOUTH SIDE OF HAGERSTOWN, GO SOUTH ON HIGHWAY 65
 JV6502'FOR 6.07 KM (3.75 MI) TO ITS JUNCTION WITH STATE HIGHWAY 68.  CONTINUE
 JV6502'SOUTH FOR 9.41 KM (5.85 MI) TO A PAVED ROAD LEFT AT BATTLEFIELD
 JV6502'ENTRANCE.  TURN LEFT, EAST ON DUNKER CHURCH ROAD FOR 0.09 KM (0.05 MI)
 JV6502'TO A ROAD LEFT.  CONTINUE AHEAD, EASTERLY ON PAVED LANE FOR 0.13 KM
 JV6502'(0.10 MI) TO SOUTH END OF PARKING AREA AND THE STATION ON THE RIGHT.
 JV6502'
 JV6502'THE STATION IS SET IN A DRILL HOLE IN A 0.6 M (2.0 FT) X 1.5 M
 JV6502'(4.9 FT) ROCK OUTCROP PROJECTING 0.2 M (0.7 FT) AT ITS HIGHEST POINT.
 JV6502'IT IS 32.3 M (106.0 FT) EAST OF THE SOUTHEAST CURB CORNER OF THE
 JV6502'MACADAM PARKING LOT, 40.1 M (131.6 FT) SOUTH-SOUTHEAST OF A 35-CM OAK
 JV6502'TREE, 47.9 M (157.2 FT) SOUTHWEST OF A FIRE HYDRANT NEAR SOUTH END OF
 JV6502'THE VISITORS CENTER BUILDING, 33.9 M (111.2 FT) WEST-SOUTHWEST OF THE
 JV6502'CENTER ONE OF THREE SMALL TREES ON THE RIDGE.  THERE IS A CARSONITE
 JV6502'WITNESS SIGN JUST WEST OF THE ROCK OUTCROPPING.  THE AREA IN WHICH THE
 JV6502'MONUMENT IS LOCATED IS NOW PART OF THE MOWED AREA.
 JV6502
 JV6502                          STATION RECOVERY (1999)
 JV6502
 JV6502'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (CG)
 JV6502'MARK IS IN A 20 FOOT (6.1 M) X 5 FOOT (1.5 M) OUTCROP WHICH PROJECTS
 JV6502'APPROXIMATELY ONE FOOT ABOVE GROUND ON A HIGH HILL WITH A VIEW OF 5 TO
 JV6502'10 MILES (16.1 KM) FROM NORTHEAST TO SOUTH.
 JV6502
 JV6502                          STATION RECOVERY (2000)
 JV6502
 JV6502'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6502'RECOVERED AS DESCRIBED.
 JV6502
 JV6502                          STATION RECOVERY (2001)
 JV6502
 JV6502'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (JMW)
 JV6502'RECOVERED AS DESCRIBED.  THIS IS A COOPERATIVE BASE NETWORK CONTROL
 JV6502'STATION.
 JV6502
 JV6502                          STATION RECOVERY (2003)
 JV6502
 JV6502'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (CSW)
 JV6502'RECOVERED IN GOOD CONDITION.
 JV6502
 JV6502                          STATION RECOVERY (2005)
 JV6502
 JV6502'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2005 (GEN)
 JV6502'RECOVERED IN GOOD CONDITION.
 JV6502
 JV6502                          STATION RECOVERY (2007)
 JV6502
 JV6502'RECOVERY NOTE BY GEOCACHING 2007 (WS)
 JV6502'RECOVERED IN GOOD CONDITION.
 JV6502
 JV6502                          STATION RECOVERY (2009)
 JV6502
 JV6502'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV6502'RECOVERED IN GOOD CONDITION.
 JV6502
 JV6502                          STATION RECOVERY (2013)
 JV6502
 JV6502'RECOVERY NOTE BY GEOCACHING 2013 (MFM)
 JV6502'RECOVERED AS DESCRIBED.
 JV6502
 JV6502                          STATION RECOVERY (2019)
 JV6502
 JV6502'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV6502'RECOVERED IN GOOD CONDITION.
 JV6502
 JV6502                          STATION RECOVERY (2020)
 JV6502
 JV6502'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (PH)
 JV6502'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN5995 ***********************************************************************
 DN5995  DESIGNATION -  ANTRIM
 DN5995  PID         -  DN5995
 DN5995  STATE/COUNTY-  MD/CARROLL
 DN5995  COUNTRY     -  US
 DN5995  USGS QUAD   -  TANEYTOWN (2016)
 DN5995
 DN5995                         *CURRENT SURVEY CONTROL
 DN5995  ______________________________________________________________________
 DN5995* NAD 83(1986) POSITION- 39 38 52.     (N) 077 09 16.     (W)   SCALED
 DN5995* NAVD 88 ORTHO HEIGHT -   169.283 (meters)      555.39  (feet) ADJUSTED
 DN5995  ______________________________________________________________________
 DN5995  GEOID HEIGHT    -        -32.865 (meters)                     GEOID18
 DN5995  DYNAMIC HEIGHT  -        169.193 (meters)      555.09  (feet) COMP
 DN5995  MODELED GRAVITY -    980,092.6   (mgal)                       NAVD 88
 DN5995
 DN5995  VERT ORDER      -  SECOND    CLASS II
 DN5995
 DN5995.The horizontal coordinates were scaled from a map and have
 DN5995.an estimated accuracy of +/- 6 seconds.
 DN5995
 DN5995.The orthometric height was determined by differential leveling and
 DN5995.adjusted by the NATIONAL GEODETIC SURVEY
 DN5995.in June 2012.
 DN5995
 DN5995.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN5995.GEOID18 height accuracy estimate available here.
 DN5995
 DN5995.Click photographs - Photos may exist for this station.
 DN5995
 DN5995.The dynamic height is computed by dividing the NAVD 88
 DN5995.geopotential number by the normal gravity value computed on the
 DN5995.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN5995.degrees latitude (g = 980.6199 gals.).
 DN5995
 DN5995.The modeled gravity was interpolated from observed gravity values.
 DN5995
 DN5995;                    North         East    Units  Estimated Accuracy
 DN5995;SPC MD       -   219,930.      386,740.      MT  (+/- 180 meters Scaled)
 DN5995
 DN5995_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ151908(NAD 83)
 DN5995
 DN5995                          SUPERSEDED SURVEY CONTROL
 DN5995
 DN5995.No superseded survey control is available for this station.
 DN5995
 DN5995_MARKER: DD = SURVEY DISK
 DN5995_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN5995_STAMPING: ANTRIM 1993
 DN5995_MARK LOGO: MD-013
 DN5995_PROJECTION: FLUSH
 DN5995_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN5995+STABILITY: SURFACE MOTION
 DN5995_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN5995+SATELLITE: SATELLITE OBSERVATIONS - July 25, 1995
 DN5995
 DN5995  HISTORY     - Date     Condition        Report By
 DN5995  HISTORY     - 1993     MONUMENTED       MD-013
 DN5995  HISTORY     - 19950725 GOOD             MDSHA
 DN5995
 DN5995                          STATION DESCRIPTION
 DN5995
 DN5995'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1995 (SFK)
 DN5995'THE MARK IS LOCATED AT THE INTERSECTION OF MARYLAND ROUTE 140 AND
 DN5995'ROUTE 832 IN THE SOUTHEAST SECTION OF TANEYTOWN.
 DN5995'
 DN5995'IT IS IN THE NORTHWEST GRASS ISLAND, 18.2 FT (5.5 M) NORTHEAST OF A
 DN5995'METAL LIGHT POLE, 31.0 FT (9.4 M) SOUTHWEST OF THE CENTERLINE OF
 DN5995'MARYLAND ROUTE 140, 47.3 FT (14.4 M) NORTHWEST OF THE CENTERLINE OF
 DN5995'ANTRIM BOULEVARD, 2.2 FT (0.7 M) SOUTHWEST OF THE FACE OF A CONCRETE
 DN5995'CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9262 ***********************************************************************
 HV9262  SACS        -  This is a Secondary Airport Control Station.
 HV9262  DESIGNATION -  AP 1968 STA A ADW
 HV9262  PID         -  HV9262
 HV9262  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9262  COUNTRY     -  US
 HV9262  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9262
 HV9262                         *CURRENT SURVEY CONTROL
 HV9262  ______________________________________________________________________
 HV9262* NAD 83(2011) POSITION- 38 49 21.65181(N) 076 52 16.93734(W)   ADJUSTED
 HV9262* NAD 83(2011) ELLIP HT-    49.593 (meters)        (06/27/12)   ADJUSTED
 HV9262* NAD 83(2011) EPOCH   -  2010.00
 HV9262* NAVD 88 ORTHO HEIGHT -    82.136 (meters)      269.47  (feet) ADJUSTED
 HV9262  ______________________________________________________________________
 HV9262  GEOID HEIGHT    -        -32.532 (meters)                     GEOID18
 HV9262  NAD 83(2011) X  -  1,130,177.133 (meters)                     COMP
 HV9262  NAD 83(2011) Y  - -4,845,677.689 (meters)                     COMP
 HV9262  NAD 83(2011) Z  -  3,977,030.968 (meters)                     COMP
 HV9262  LAPLACE CORR    -         -5.18  (seconds)                    DEFLEC18
 HV9262  DYNAMIC HEIGHT  -         82.090 (meters)      269.32  (feet) COMP
 HV9262  MODELED GRAVITY -    980,069.6   (mgal)                       NAVD 88
 HV9262
 HV9262  VERT ORDER      -  FIRST     CLASS II
 HV9262
 HV9262  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9262  Standards:
 HV9262         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9262            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9262  -------------------------------------------------------------------
 HV9262  NETWORK    1.18   2.37           0.53   0.40   1.21      0.38188080
 HV9262  -------------------------------------------------------------------
 HV9262  Click here for local accuracies and other accuracy information.
 HV9262
 HV9262.This mark is at Andrews Afb Airport (ADW)
 HV9262
 HV9262.The horizontal coordinates were established by GPS observations
 HV9262.and adjusted by the National Geodetic Survey in June 2012.
 HV9262
 HV9262.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9262.been affixed to the stable North American tectonic plate. See 
 HV9262.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9262
 HV9262.The horizontal coordinates are valid at the epoch date displayed above
 HV9262.which is a decimal equivalence of Year/Month/Day.
 HV9262
 HV9262.The orthometric height was determined by differential leveling and
 HV9262.adjusted by the NATIONAL GEODETIC SURVEY
 HV9262.in August 1994.
 HV9262
 HV9262.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9262.GEOID18 height accuracy estimate available here.
 HV9262
 HV9262.Click photographs - Photos may exist for this station.
 HV9262
 HV9262.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9262
 HV9262.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9262
 HV9262.The ellipsoidal height was determined by GPS observations
 HV9262.and is referenced to NAD 83.
 HV9262
 HV9262.The dynamic height is computed by dividing the NAVD 88
 HV9262.geopotential number by the normal gravity value computed on the
 HV9262.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9262.degrees latitude (g = 980.6199 gals.).
 HV9262
 HV9262.The modeled gravity was interpolated from observed gravity values.
 HV9262
 HV9262. The following values were computed from the NAD 83(2011) position.
 HV9262
 HV9262;                    North         East     Units Scale Factor Converg.
 HV9262;SPC MD       -   128,330.205   411,169.825   MT  0.99995028   +0 04 50.6
 HV9262;SPC MD       -   421,030.01  1,348,979.67   sFT  0.99995028   +0 04 50.6
 HV9262;UTM  18      - 4,298,763.153   337,544.735   MT  0.99992499   -1 10 24.4
 HV9262
 HV9262!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9262!SPC MD       -   0.99999222  x   0.99995028  =   0.99994250
 HV9262!UTM  18      -   0.99999222  x   0.99992499  =   0.99991721
 HV9262
 HV9262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3754498763(NAD 83)
 HV9262
 HV9262                          SUPERSEDED SURVEY CONTROL
 HV9262
 HV9262  NAD 83(2007)-  38 49 21.65204(N)    076 52 16.93809(W) AD(2002.00) 0
 HV9262  ELLIP H (02/10/07)   49.609  (m)                       GP(2002.00)    
 HV9262  ELLIP H (08/19/02)   49.614  (m)                       GP(       ) 4 2
 HV9262  NAD 83(1991)-  38 49 21.65303(N)    076 52 16.93801(W) AD(       ) 1
 HV9262  ELLIP H (04/02/98)   49.685  (m)                       GP(       ) 4 2
 HV9262  NAD 83(1993)-  38 49 21.65303(N)    076 52 16.93797(W) AD(       ) 1
 HV9262  ELLIP H (11/30/95)   49.685  (m)                       GP(       ) 4 2
 HV9262  NAD 83(1991)-  38 49 21.65314(N)    076 52 16.93825(W) AD(       ) 1
 HV9262  ELLIP H (01/15/92)   49.602  (m)                       GP(       ) 3 2
 HV9262  NAVD 88              82.14   (m)          269.5    (f) LEVELING    3  
 HV9262  NAVD 88              82.14   (m)          269.5    (f) LEVELING    3  
 HV9262  NGVD 29              82.45   (m)          270.5    (f) LEVELING    3  
 HV9262
 HV9262.Superseded values are not recommended for survey control.
 HV9262
 HV9262.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9262.See file dsdata.pdf to determine how the superseded data were derived.
 HV9262
 HV9262_MARKER: DT = TOPOGRAPHIC STATION DISK
 HV9262_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9262_STAMPING: AP 1968 STA A
 HV9262_MARK LOGO: CGS
 HV9262_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV9262_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9262+STABILITY: SURFACE MOTION
 HV9262_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9262+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2024
 HV9262
 HV9262  HISTORY     - Date     Condition        Report By
 HV9262  HISTORY     - 1968     MONUMENTED       CGS
 HV9262  HISTORY     - 19880615 GOOD             NGS
 HV9262  HISTORY     - 19920713 GOOD
 HV9262  HISTORY     - 19940725 GOOD             NGS
 HV9262  HISTORY     - 19941018 GOOD             NGS
 HV9262  HISTORY     - 19991202 GOOD             NGS
 HV9262  HISTORY     - 20241215 GOOD             DEI
 HV9262
 HV9262                          STATION DESCRIPTION
 HV9262
 HV9262'DESCRIBED BY COAST AND GEODETIC SURVEY 1968
 HV9262'THE STATION IS LOCATED NEAR THE NORTH END OF THE AIRFIELD OF ANDREWS
 HV9262'AIR FORCE BASE APPROXIMATELY 6 MILESSOUTHEAST OF WASHINGTON D.C., 1
 HV9262'MI (1.61 KM) EAST OF CAMP SPRINGS, MD., AND 1 MI (1.61 KM) NORTH OF
 HV9262'JENKINS CORNER, MD.
 HV9262'TO REACH THE STATION FROM THE INTERCHANGE OF INTERSTATE 95 (CAPITAL
 HV9262'BELTWAY) AND STATE ROUTE 5, PROCEED EAST  ON INTERSTATE 95,
 HV9262'APPROXIMATELY 2 MI (3.22 KM) TO AIRFORCE BASE VISITORS CENTER ON
 HV9262'RIGHT. AT THE VISITORS CENTER CONTACT THE AIRFIELD MANAGER BY PHONE
 HV9262'NUMBER 301-981-3415 FOR PERMISSION TO ACCESS THE STATION.
 HV9262'THE STATION IS LOCATED NEAR THE APPROACH END RUNWAY 19R, 290.0 FT
 HV9262'(88.39 M) SOUTHWEST OF THE CENTERLINE END OF RUNWAY 19R, 232.8 FEET
 HV9262'NORTHWEST OF THE FIRST RUNWAY LIGHT ON THE WEST SIDE OF THE RUNWAY,
 HV9262'100.1 FT (30.51 M) WEST OF THE WEST EDGE OF THE RUNWAY AND 95.4 FEET
 HV9262'SOUTH OF THE 5TH TAXIWAY LIGHT ON THE SOUTH SIDE OF THE TAXIWAY.
 HV9262'THE STATION IS A STANDARD SURVEY DISK STAMPED AP 1968 STA A SET IN THE
 HV9262'TOP OF A CONCRETE MONUMENT FLUSH WITH THE GROUND.
 HV9262
 HV9262                          STATION RECOVERY (1988)
 HV9262
 HV9262'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HV9262'LOCATED AT ANDREWS AIR FORCE BASE NEAR THE APPROACH TO RUNWAY END 19R,
 HV9262'290.0 FT (88.4 M) SW OF THE CENTERLINE END OF RUNWAY 19R, 232.8 FT
 HV9262'(71.0 M) NW OF THE FIRST RUNWAY LIGHT ON THE W SIDE OF THE RUNWAY,
 HV9262'100.1 FT (30.5 M) W OF THE W EDGE OF THE RUNWAY AND 95.4 FT (29.1 M) S
 HV9262'OF THE 5TH TAXIWAY LIGHT ON THE S SIDE OF THE TAXIWAY.  A STANDARD
 HV9262'TOPO DISK STAMPED AP 1968 STA A SET IN THE TOP OF A CONCRETE MONUMENT
 HV9262'ABOUT FLUSH WITH THE GROUND.
 HV9262
 HV9262                          STATION RECOVERY (1992)
 HV9262
 HV9262'RECOVERED 1992
 HV9262'RECOVERED IN GOOD CONDITION.
 HV9262
 HV9262                          STATION RECOVERY (1994)
 HV9262
 HV9262'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994
 HV9262'RECOVERED IN GOOD CONDITION.
 HV9262
 HV9262                          STATION RECOVERY (1994)
 HV9262
 HV9262'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 HV9262'RECOVERED AS DESCRIBED.
 HV9262
 HV9262                          STATION RECOVERY (1999)
 HV9262
 HV9262'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (AJL)
 HV9262'THE STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) SOUTHEAST OF WASHINGTON
 HV9262'DC, 1.0 MI (1.6 KM) EAST OF CAMP SPRINGS MD AND ON ANDREWS AIR FORCE
 HV9262'BASE NEAR THE APPROACH END OF RUNWAY 19R.  OWNERSHIP--US AIR FORCE,
 HV9262'CONTACT OPERATIONS MANAGER, CAPTAIN DALE HOLLAND, BLDG 1220, MENOHER
 HV9262'DRIVE, ANDREWS AFB, MD 20762.  PHONE 301-981-3411.  PERMISSION IS
 HV9262'REQUIRED TO OCCUPY THIS STATION.  TO REACH THE STATION FROM THE GATE
 HV9262'AT THE OPERATIONS BUILDING ON THE WEST RAMP (JUST NORTH OF THE TOWER)
 HV9262'GO NORTHWEST ACROSS THE APRON FOR 0.3 MI (0.5 KM) TO A NORTH-SOUTH
 HV9262'APRON EDGE TAXIWAY (W) AND A TAXIWAY (C) LEADING TO THE EAST, BEAR
 HV9262'LEFT AND GO NORTH ON TAXIWAY (W) FOR 0.6 MI (1.0 KM) TO A TAXIWAY TURN
 HV9262'TO THE RIGHT, TURN RIGHT AND FOLLOW TAXIWAY (N) EAST FOR 0.15 MI (0.24
 HV9262'KM) TO THE HOLD SHORT BAR FOR RUNWAY 19R AND THE STATION JUST AHEAD ON
 HV9262'THE RIGHT.  THE STATION IS FLUSH WITH THE GROUND, 290.0 FT (88.4 M)
 HV9262'WEST OF THE RUNWAY CENTERLINE, 232.8 FT (71.0 M) NORTHWEST OF THE 2ND
 HV9262'RUNWAY LIGHT, 100.1 FT (30.5 M) WEST OF THE WEST EDGE OF THE RUNWAY
 HV9262'AND 95.4 FT (29.1 M) SOUTH OF THE 5TH TAXIWAY LIGHT.  THIS IS A
 HV9262'SECONDARY AIRPORT CONTROL STATION (SACS) .
 HV9262
 HV9262                          STATION RECOVERY (2024)
 HV9262
 HV9262'RECOVERY NOTE BY DEWBERRY ENGINEERING INC. 2024 (GS)
 HV9262'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9263 ***********************************************************************
 HV9263  SACS        -  This is a Secondary Airport Control Station.
 HV9263  DESIGNATION -  AP 1968 STA B ADW
 HV9263  PID         -  HV9263
 HV9263  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9263  COUNTRY     -  US
 HV9263  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9263
 HV9263                         *CURRENT SURVEY CONTROL
 HV9263  ______________________________________________________________________
 HV9263* NAD 83(2011) POSITION- 38 47 54.46298(N) 076 52 16.66424(W)   ADJUSTED
 HV9263* NAD 83(2011) ELLIP HT-    44.263 (meters)        (06/27/12)   ADJUSTED
 HV9263* NAD 83(2011) EPOCH   -  2010.00
 HV9263* NAVD 88 ORTHO HEIGHT -    76.855 (meters)      252.15  (feet) ADJUSTED
 HV9263  ______________________________________________________________________
 HV9263  GEOID HEIGHT    -        -32.579 (meters)                     GEOID18
 HV9263  NAD 83(2011) X  -  1,130,565.356 (meters)                     COMP
 HV9263  NAD 83(2011) Y  - -4,847,313.196 (meters)                     COMP
 HV9263  NAD 83(2011) Z  -  3,974,932.588 (meters)                     COMP
 HV9263  LAPLACE CORR    -         -5.30  (seconds)                    DEFLEC18
 HV9263  DYNAMIC HEIGHT  -         76.812 (meters)      252.01  (feet) COMP
 HV9263  MODELED GRAVITY -    980,067.5   (mgal)                       NAVD 88
 HV9263
 HV9263  VERT ORDER      -  FIRST     CLASS II
 HV9263
 HV9263  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9263  Standards:
 HV9263         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9263            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9263  -------------------------------------------------------------------
 HV9263  NETWORK    1.16   2.37           0.52   0.39   1.21      0.38556313
 HV9263  -------------------------------------------------------------------
 HV9263  Click here for local accuracies and other accuracy information.
 HV9263
 HV9263.This mark is at Andrews Afb Airport (ADW)
 HV9263
 HV9263.The horizontal coordinates were established by GPS observations
 HV9263.and adjusted by the National Geodetic Survey in June 2012.
 HV9263
 HV9263.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9263.been affixed to the stable North American tectonic plate. See 
 HV9263.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9263
 HV9263.The horizontal coordinates are valid at the epoch date displayed above
 HV9263.which is a decimal equivalence of Year/Month/Day.
 HV9263
 HV9263.The orthometric height was determined by differential leveling and
 HV9263.adjusted by the NATIONAL GEODETIC SURVEY
 HV9263.in August 1994.
 HV9263
 HV9263.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9263.GEOID18 height accuracy estimate available here.
 HV9263
 HV9263.Click photographs - Photos may exist for this station.
 HV9263
 HV9263.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9263
 HV9263.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9263
 HV9263.The ellipsoidal height was determined by GPS observations
 HV9263.and is referenced to NAD 83.
 HV9263
 HV9263.The dynamic height is computed by dividing the NAVD 88
 HV9263.geopotential number by the normal gravity value computed on the
 HV9263.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9263.degrees latitude (g = 980.6199 gals.).
 HV9263
 HV9263.The modeled gravity was interpolated from observed gravity values.
 HV9263
 HV9263. The following values were computed from the NAD 83(2011) position.
 HV9263
 HV9263;                    North         East     Units Scale Factor Converg.
 HV9263;SPC MD       -   125,641.741   411,180.203   MT  0.99995075   +0 04 50.8
 HV9263;SPC MD       -   412,209.61  1,349,013.72   sFT  0.99995075   +0 04 50.8
 HV9263;UTM  18      - 4,296,075.173   337,496.282   MT  0.99992519   -1 10 22.0
 HV9263
 HV9263!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9263!SPC MD       -   0.99999306  x   0.99995075  =   0.99994381
 HV9263!UTM  18      -   0.99999306  x   0.99992519  =   0.99991825
 HV9263
 HV9263_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3749696075(NAD 83)
 HV9263
 HV9263                          SUPERSEDED SURVEY CONTROL
 HV9263
 HV9263  NAD 83(2007)-  38 47 54.46321(N)    076 52 16.66499(W) AD(2002.00) 0
 HV9263  ELLIP H (02/10/07)   44.279  (m)                       GP(2002.00)    
 HV9263  ELLIP H (08/19/02)   44.286  (m)                       GP(       ) 4 2
 HV9263  NAD 83(1991)-  38 47 54.46384(N)    076 52 16.66497(W) AD(       ) 1
 HV9263  ELLIP H (04/02/98)   44.357  (m)                       GP(       ) 4 2
 HV9263  NAD 83(1993)-  38 47 54.46384(N)    076 52 16.66493(W) AD(       ) 1
 HV9263  ELLIP H (11/30/95)   44.357  (m)                       GP(       ) 4 2
 HV9263  NAD 83(1991)-  38 47 54.46383(N)    076 52 16.66541(W) AD(       ) 1
 HV9263  ELLIP H (01/15/92)   44.267  (m)                       GP(       ) 3 2
 HV9263  NAVD 88              76.86   (m)          252.2    (f) LEVELING    3  
 HV9263  NAVD 88              76.86   (m)          252.2    (f) LEVELING    3  
 HV9263  NGVD 29              77.14   (m)          253.1    (f) LEVELING    3  
 HV9263
 HV9263.Superseded values are not recommended for survey control.
 HV9263
 HV9263.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9263.See file dsdata.pdf to determine how the superseded data were derived.
 HV9263
 HV9263_MARKER: DT = TOPOGRAPHIC STATION DISK
 HV9263_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9263_STAMPING: AP 1968 STA B
 HV9263_MARK LOGO: CGS
 HV9263_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV9263_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9263+STABILITY: SURFACE MOTION
 HV9263_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9263+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2024
 HV9263
 HV9263  HISTORY     - Date     Condition        Report By
 HV9263  HISTORY     - 1968     MONUMENTED       CGS
 HV9263  HISTORY     - 19880615 GOOD             NGS
 HV9263  HISTORY     - 19920710 GOOD             NGS
 HV9263  HISTORY     - 19920713 GOOD
 HV9263  HISTORY     - 19940725 GOOD             NGS
 HV9263  HISTORY     - 19941018 GOOD             NGS
 HV9263  HISTORY     - 19991202 GOOD             NGS
 HV9263  HISTORY     - 20241215 GOOD             DEI
 HV9263
 HV9263                          STATION DESCRIPTION
 HV9263
 HV9263'DESCRIBED BY COAST AND GEODETIC SURVEY 1968
 HV9263'THE STATION IS LOCATED NEAR THE NORTH END OF THE AIRFIELD OF ANDREWS
 HV9263'AIR FORCE BASE APPROXIMATELY 6 MILESSOUTHEAST OF WASHINGTON D.C., 1
 HV9263'MI (1.61 KM) EAST OF CAMP SPRINGS, MD., AND 1 MI (1.61 KM) NORTH OF
 HV9263'JENKINS CORNER, MD.
 HV9263'TO REACH THE STATION FROM THE INTERCHANGE OF INTERSTATE 95 (CAPITAL
 HV9263'BELTWAY) AND STATE ROUTE 5, PROCEED EAST  ON INTERSTATE 95,
 HV9263'APPROXIMATELY 2 MI (3.22 KM) TO AIRFORCE BASE VISITORS CENTER ON
 HV9263'RIGHT. AT THE VISITORS CENTER CONTACT THE AIRFIELD MANAGER BY PHONE
 HV9263'NUMBER 301-981-3415 FOR PERMISSION TO ACCESS THE STATION.
 HV9263'THE STATION IS LOCATED NEAR THE APPROACH TO RUNWAY 1L, 331.1 FT
 HV9263'(100.92 M) NORTHWEST OF THE CENTERLINE END OF RUNWAY 1L, 179.5 FT
 HV9263'(54.71 M) SOUTHWEST OF THE FIRST RUNWAY LIGHT ON THE WEST SIDE OF THE
 HV9263'RUNWAY LIGHT ON THE WEST SIDE OF THE RUNWAY, 154.8 FT (47.18 M) NORTH
 HV9263'OF THE 5TH TAXIWAY LIGHT ON THE NORTH SIDE OF THE TAXIWAY AND 100.0
 HV9263'FEETWEST OF THE WEST EDGE OF THE RUNWAY.
 HV9263'THE STATION IS A STANDARD SURVEY DISK STAMPED AP 1968 STA B SET IN THE
 HV9263'TOP OF A CONCRETE MONUMENT FLUSH WITH THE GROUND.
 HV9263
 HV9263                          STATION RECOVERY (1988)
 HV9263
 HV9263'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HV9263'LOCATED AT ANDREWS AIR FORCE BASE NEAR THE APPROACH TO RUNWAY END IL,
 HV9263'331.1 FT (100.9 M) NW OF THE CENTERLINE END OF RUNWAY IL, 179.5 FT
 HV9263'(54.7 M) SW OF THE FIRST RUNWAY LIGHT ON THE W SIDE OF THE RUNWAY,
 HV9263'154.8 FT (47.2 M) N OF THE 5TH TAXIWAY LIGHT ON THE W EDGE OF THE
 HV9263'RUNWAY.  A STANDARD TOPO DISK STAMPED AP 1968 STA B SET IN THE TOP OF
 HV9263'A CONCRETE MONUMENT ABOUT FLUSH WITH THE GROUND.
 HV9263
 HV9263                          STATION RECOVERY (1992)
 HV9263
 HV9263'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 (LJL)
 HV9263'RECOVERED AS DESCRIBED AND POSITIONED BY GPS, WITH EDGE OF RUNWAY
 HV9263'LEGALLY MARKED BY WHITE STRIPE.
 HV9263
 HV9263                          STATION RECOVERY (1992)
 HV9263
 HV9263'RECOVERED 1992
 HV9263'RECOVERED IN GOOD CONDITION.
 HV9263
 HV9263                          STATION RECOVERY (1994)
 HV9263
 HV9263'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994
 HV9263'RECOVERED IN GOOD CONDITION.
 HV9263
 HV9263                          STATION RECOVERY (1994)
 HV9263
 HV9263'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 HV9263'RECOVERED AS DESCRIBED.
 HV9263
 HV9263                          STATION RECOVERY (1999)
 HV9263
 HV9263'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (AJL)
 HV9263'THE STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) SOUTHEAST OF WASHINGTON
 HV9263'DC, 1.0 MI (1.6 KM) EAST OF CAMP SPRINGS MD AND ON ANDREWS AIR FORCE
 HV9263'BASE NEAR THE APPROACH END OF RUNWAY 01L.  OWNERSHIP--US AIR FORCE,
 HV9263'CONTACT OPERATIONS MANAGER, CAPTAIN DALE HOLLAND, BLDG 1220, MENOHER
 HV9263'DRIVE, ANDREWS AFB, MD 20762.  PHONE 301-981-3411.  PERMISSION IS
 HV9263'REQUIRED TO OCCUPY THIS STATION.  TO REACH THE STATION FROM THE GATE
 HV9263'AT THE OPERATIONS BUILDING ON THE WEST RAMP (JUST NORTH OF THE TOWER)
 HV9263'GO WEST ACROSS THE APRON FOR 0.2 MI (0.3 KM) TO A NORTH-SOUTH APRON
 HV9263'EDGE TAXIWAY (W) ,TURN RIGHT AND GO SOUTH ON TAXIWAY (W) FOR 0.5 MI
 HV9263'(0.8 KM) TO A TAXIWAY TURN TO THE LEFT, TURN LEFT AND FOLLOW TAXIWAY
 HV9263'(S) EAST FOR 0.15 MI (0.24 KM) TO THE HOLD SHORT BAR FOR RUNWAY 01L
 HV9263'AND THE STATION JUST AHEAD ON THE LEFT.  THE STATION IS FLUSH WITH THE
 HV9263'GROUND, 331.1 FT (100.9 M) NORTHWEST OF THE RUNWAY CENTERLINE AT THE
 HV9263'APPROACH END OF RUNWAY 1L, 179.5 FT (54.7 M) SOUTHWEST OF THE 2ND
 HV9263'RUNWAY LIGHT, 154.8 FT (47.2 M) NORTH OF THE 5TH TAXIWAY LIGHT AND 100
 HV9263'FT (30.5 M) WEST OF THE WEST EDGE OF THE RUNWAY.  THIS IS A SECONDARY
 HV9263'AIRPORT CONTROL STATION (SACS) .
 HV9263
 HV9263                          STATION RECOVERY (2024)
 HV9263
 HV9263'RECOVERY NOTE BY DEWBERRY ENGINEERING INC. 2024 (GS)
 HV9263'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6939 ***********************************************************************
 JV6939  DESIGNATION -  AP 2
 JV6939  PID         -  JV6939
 JV6939  STATE/COUNTY-  MD/BALTIMORE
 JV6939  COUNTRY     -  US
 JV6939  USGS QUAD   -  WHITE MARSH (2016)
 JV6939
 JV6939                         *CURRENT SURVEY CONTROL
 JV6939  ______________________________________________________________________
 JV6939* NAD 83(1986) POSITION- 39 24 09.     (N) 076 25 32.     (W)   SCALED
 JV6939* NAVD 88 ORTHO HEIGHT -    44.170 (meters)      144.91  (feet) ADJUSTED
 JV6939  ______________________________________________________________________
 JV6939  GEOID HEIGHT    -        -32.932 (meters)                     GEOID18
 JV6939  DYNAMIC HEIGHT  -         44.147 (meters)      144.84  (feet) COMP
 JV6939  MODELED GRAVITY -    980,107.9   (mgal)                       NAVD 88
 JV6939
 JV6939  VERT ORDER      -  SECOND    CLASS I
 JV6939
 JV6939.The horizontal coordinates were scaled from a map and have
 JV6939.an estimated accuracy of +/- 6 seconds.
 JV6939
 JV6939.The orthometric height was determined by differential leveling and
 JV6939.adjusted by the NATIONAL GEODETIC SURVEY
 JV6939.in June 1995.
 JV6939
 JV6939.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6939.GEOID18 height accuracy estimate available here.
 JV6939
 JV6939.Click photographs - Photos may exist for this station.
 JV6939
 JV6939.The dynamic height is computed by dividing the NAVD 88
 JV6939.geopotential number by the normal gravity value computed on the
 JV6939.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6939.degrees latitude (g = 980.6199 gals.).
 JV6939
 JV6939.The modeled gravity was interpolated from observed gravity values.
 JV6939
 JV6939;                    North         East    Units  Estimated Accuracy
 JV6939;SPC MD       -   192,850.      449,480.      MT  (+/- 180 meters Scaled)
 JV6939
 JV6939_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ772624(NAD 83)
 JV6939
 JV6939                          SUPERSEDED SURVEY CONTROL
 JV6939
 JV6939.No superseded survey control is available for this station.
 JV6939
 JV6939_MARKER: DD = SURVEY DISK
 JV6939_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6939_STAMPING: AP-2 1991
 JV6939_MARK LOGO: MDSHA
 JV6939_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6939_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6939+STABILITY: SURFACE MOTION
 JV6939_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6939+SATELLITE: SATELLITE OBSERVATIONS - 1991
 JV6939
 JV6939  HISTORY     - Date     Condition        Report By
 JV6939  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6939
 JV6939                          STATION DESCRIPTION
 JV6939
 JV6939'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6939'THE MARKER IS LOCATED ABOUT 12.5 MI (20.1 KM) NORTHEAST OF BALTIMORE,
 JV6939'2.0 MI (3.2 KM) EAST-SOUTHEAST OF PERRY HALL AND ALONG THE SOUTHBOUND
 JV6939'LANE OF INTERSTATE HIGHWAY 95.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH
 JV6939'THE MARKER FROM A POINT WHERE NEW FORGE ROAD CROSSES OVER THE
 JV6939'SOUTHBOUND LANE OF INTERSTATE HIGHWAY 95, GO SOUTH ON INTERSTATE
 JV6939'HIGHWAY 95 FOR 0.7 MI (1.1 KM) TO THE MARKER ON THE THE RIGHT.  THE
 JV6939'POINT IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY
 JV6939'DISK SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH
 JV6939'IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 13.5 FT (4.1 M)
 JV6939'NORTHWEST OF THE NORTHWEST EDGE OF THE MOST NORTHWEST PAVED SHOULDER
 JV6939'OF THE SOUTH BOUND LANE OF INTERSTATE HIGHWAY 95, 25.0 FT (7.6 M)
 JV6939'SOUTH-SOUTHEAST OF A 20-IN.  OAK TREE AND 352.0 FT (107.3 M) NORTH OF
 JV6939'MILE MARKER NUMBER M018S.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2820 ***********************************************************************
 HU2820  DESIGNATION -  AP STA A SBY
 HU2820  PID         -  HU2820
 HU2820  STATE/COUNTY-  MD/WICOMICO
 HU2820  COUNTRY     -  US
 HU2820  USGS QUAD   -  SALISBURY (2016)
 HU2820
 HU2820                         *CURRENT SURVEY CONTROL
 HU2820  ______________________________________________________________________
 HU2820* NAD 83(2011) POSITION- 38 20 40.92920(N) 075 30 21.90782(W)   ADJUSTED
 HU2820* NAD 83(2011) ELLIP HT-   -21.302 (meters)        (06/27/12)   ADJUSTED
 HU2820* NAD 83(2011) EPOCH   -  2010.00
 HU2820* NAVD 88 ORTHO HEIGHT -    14.7   (meters)       48.    (feet) GPS OBS
 HU2820  ______________________________________________________________________
 HU2820  NAVD 88 orthometric height was determined with geoid model    GEOID96
 HU2820  GEOID HEIGHT    -        -35.906 (meters)                     GEOID96
 HU2820  GEOID HEIGHT    -        -35.911 (meters)                     GEOID18
 HU2820  NAD 83(2011) X  -  1,253,579.719 (meters)                     COMP
 HU2820  NAD 83(2011) Y  - -4,849,357.852 (meters)                     COMP
 HU2820  NAD 83(2011) Z  -  3,935,510.495 (meters)                     COMP
 HU2820  LAPLACE CORR    -         -1.14  (seconds)                    DEFLEC18
 HU2820
 HU2820  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2820  Standards:
 HU2820         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2820            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2820  -------------------------------------------------------------------
 HU2820  NETWORK    1.56   2.72           0.48   0.73   1.39      0.21799827
 HU2820  -------------------------------------------------------------------
 HU2820  Click here for local accuracies and other accuracy information.
 HU2820
 HU2820.This mark is at Salisbury-Wicomico Co Regional Airport (SBY)
 HU2820
 HU2820.The horizontal coordinates were established by GPS observations
 HU2820.and adjusted by the National Geodetic Survey in June 2012.
 HU2820
 HU2820.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2820.been affixed to the stable North American tectonic plate. See 
 HU2820.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2820
 HU2820.The horizontal coordinates are valid at the epoch date displayed above
 HU2820.which is a decimal equivalence of Year/Month/Day.
 HU2820
 HU2820.The orthometric height was determined by GPS observations and a
 HU2820.high-resolution geoid model.
 HU2820
 HU2820.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2820.GEOID18 height accuracy estimate available here.
 HU2820
 HU2820.Click photographs - Photos may exist for this station.
 HU2820
 HU2820.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2820
 HU2820.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2820
 HU2820.The ellipsoidal height was determined by GPS observations
 HU2820.and is referenced to NAD 83.
 HU2820
 HU2820. The following values were computed from the NAD 83(2011) position.
 HU2820
 HU2820;                    North         East     Units Scale Factor Converg.
 HU2820;SPC MD       -    76,333.503   530,590.818   MT  0.99999252   +0 56 15.5
 HU2820;SPC MD       -   250,437.50  1,740,780.04   sFT  0.99999252   +0 56 15.5
 HU2820;UTM  18      - 4,244,182.782   455,775.697   MT  0.99962409   -0 18 50.3
 HU2820
 HU2820!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2820!SPC MD       -   1.00000334  x   0.99999252  =   0.99999586
 HU2820!UTM  18      -   1.00000334  x   0.99962409  =   0.99962743
 HU2820
 HU2820:                Primary Azimuth Mark                     Grid Az
 HU2820:SPC MD       -  AP STA B SBY                             215 43 46.4
 HU2820:UTM  18      -  AP STA B SBY                             216 58 52.2
 HU2820
 HU2820_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5577544182(NAD 83)
 HU2820
 HU2820|---------------------------------------------------------------------|
 HU2820| PID    Reference Object                     Distance      Geod. Az  |
 HU2820|                                                           dddmmss.s |
 HU2820| HU2821 AP STA B SBY                        APPROX. 1.5 KM 2164001.9 |
 HU2820|---------------------------------------------------------------------|
 HU2820
 HU2820                          SUPERSEDED SURVEY CONTROL
 HU2820
 HU2820  NAD 83(2007)-  38 20 40.92951(N)    075 30 21.90923(W) AD(2002.00) 0
 HU2820  ELLIP H (02/10/07)  -21.266  (m)                       GP(2002.00)    
 HU2820  ELLIP H (10/29/02)  -21.257  (m)                       GP(       ) 4 2
 HU2820  NAD 83(1991)-  38 20 40.93059(N)    075 30 21.90904(W) AD(       ) 3
 HU2820  ELLIP H (01/25/99)  -21.190  (m)                       GP(       ) 4 2
 HU2820  NAD 83(1991)-  38 20 40.92916(N)    075 30 21.90789(W) AD(       ) 1
 HU2820  ELLIP H (01/15/92)  -21.232  (m)                       GP(       ) 4 2
 HU2820  NGVD 29              14.89   (m)           48.9    (f) LEVELING    3  
 HU2820
 HU2820.Superseded values are not recommended for survey control.
 HU2820
 HU2820.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2820.See file dsdata.pdf to determine how the superseded data were derived.
 HU2820
 HU2820_MARKER: DT = TOPOGRAPHIC STATION DISK
 HU2820_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2820_STAMPING: AP 1967 STA A
 HU2820_MARK LOGO: CGS
 HU2820_PROJECTION: FLUSH
 HU2820_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2820_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2820+STABILITY: SURFACE MOTION
 HU2820_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2820+SATELLITE: SATELLITE OBSERVATIONS - September 19, 1996
 HU2820
 HU2820  HISTORY     - Date     Condition        Report By
 HU2820  HISTORY     - 1967     MONUMENTED       CGS
 HU2820  HISTORY     - 19920615 GOOD             NGS
 HU2820  HISTORY     - 19920806 GOOD
 HU2820  HISTORY     - 19960919 GOOD             NGS
 HU2820  HISTORY     - 20000308 POOR             NGS
 HU2820
 HU2820                          STATION DESCRIPTION
 HU2820
 HU2820'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 HU2820'THE STATION IS LOCATED ON THE SALISBURY WICOMICO COUNTY AIRPORT NEAR
 HU2820'THE RUNWAY END 23.
 HU2820'TO REACH THE AIRPORT FROM THE JUNCTION OF U.S.13 AND BYPASS 13 ON THE
 HU2820'NORTH SIDE OF SALISBURY. GO SOUTHEAST ON BYPASS 13 FOR 3.0 MI
 HU2820'(4.8 KM) TO SECOND EXIT FOR U.S. 50, TAKE SECOND EXIT (50 EAST) AND
 HU2820'GO 2.3 MI (3.7 KM) TO A CROSSROADS (WALSTON SWITCH RD.) TURN RIGHT,
 HU2820'AND GO SOUTH FOE 1.7 MITO A CROSSROAD. CONTINUE AHEAD (SOUTH) FOR 0.9
 HU2820'MI (1.4 KM) TO A T INTERSECTION TURN LEFT AND GO SOUTHEAST FOR 0.4
 HU2820'MI (0.6 KM) TO A ROAD LEFT WHICH LEADS TO THE TERMINAL. TURN LEFT AND
 HU2820'GO 0.2 MI (0.3 KM) TO THE SALISBURY WICOMICO COUNTY AIRPORT AUTHORITY
 HU2820'BUILDING AND FBO.
 HU2820'THE STATION IS A STANDARD NOS DISK STAMPED---AP 1967 STA A--- WHICH IS
 HU2820'SET IN THE TOP OF A CONCRETE POST THAT IS FLUSH WITH THE GROUND. THE
 HU2820'STATION IS 149.9 FT (45.7 M) SOUTHEAST OF THE CENTERLINE END, 122.1
 HU2820'FT (37.2 M) NORTHEAST OF RUNWAY LIGHT 171, 65.4 FT (19.9 M) SOUTHEAST
 HU2820'OF THRESHOLD LIGHT 181, AND 8.5 FT (2.6 M) SOUTH OF THE RUNWAY END
 HU2820'IDENTIFIER LIGHT (REIL).
 HU2820
 HU2820                          STATION RECOVERY (1992)
 HU2820
 HU2820'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 HU2820'STATION IS LOCATED ON THE SALISBURY WICOMICO COUNTY AIRPORT NEAR
 HU2820'RUNWAY END 23.  149.9 FT (45.7 M) SE OF THE CENTERLINE END, 122.1 NE
 HU2820'OF RUNWAY LIGHT 171, 65.4 FT (19.9 M) SE OF THRESHOLD LIGHT 181, AND
 HU2820'8.5 FT (2.6 M) S OF A REIL.  STATION IS A STANDARD TOPO DISK SET IN
 HU2820'THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND AND STAMPED AP 1967
 HU2820'STA A.
 HU2820
 HU2820                          STATION RECOVERY (1992)
 HU2820
 HU2820'RECOVERED 1992
 HU2820'RECOVERED IN GOOD CONDITION.
 HU2820
 HU2820                          STATION RECOVERY (1996)
 HU2820
 HU2820'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 HU2820'THE STATION IS LOCATED 5.0 MI (8.0 KM) EAST-SOUTHEAST OF SALISBURY,
 HU2820'2.5 MI (4.0 KM) SOUTH OF US HIGHWAY 50 AND AT THE SALISBURY WICOMICO
 HU2820'COUNTY AIRPORT NEAR THE APPROACH END OF RUNWAY 23. OWNERSHIP--WICOMICO
 HU2820'COUNTY, AIRPORT MANAGER IS ROBERT L.  BRYANT, 5485 AIRPORT TERMINAL
 HU2820'ROAD, UNIT A, SALISBURY, MD 21804-1545.  PHONE (410) 548-4827.  THIS
 HU2820'IS A CONTROLLED AIRFIELD AND PERMISSION IS REQUIRED TO ENTER. TO REACH
 HU2820'THE STATION FROM THE JUNCTION OF US HIGHWAY 50 AND US HIGHWAY 13
 HU2820'BYPASS ON THE EAST SIDE OF SALISBURY, GO EAST ON US HIGHWAY 50 FOR 2.3
 HU2820'MI (3.7 KM) TO A INTERSECTION, TURN RIGHT AND GO SOUTH ON A PAVED ROAD
 HU2820'(WALSTON SWITCH ROAD) FOR 1.5 MI (2.4 KM) TO A INTERSECTION, CONTINUE
 HU2820'AHEAD AND GO SOUTHERLY ON A PAVED ROAD FOR 0.9 MI (1.4 KM) TO A
 HU2820'T-JUNCTION, TURN LEFT AND GO SOUTHERLY ON A PAVED ROAD (AIRPORT ROAD)
 HU2820'FOR 0.9 MI (1.4 KM) TO A PAVED ROAD AND PARKING LOT ON THE LEFT
 HU2820'(BAYLAND AVIATION) , TURN LEFT AND GO EAST ON THE PAVED ROAD FOR 0.1
 HU2820'MI (0.2 KM) TO A GATE AHEAD, PASS THROUGH GATE, BEAR SLIGHTLY TO THE
 HU2820'RIGHT AND GO SOUTHEAST ON A TAXIWAY (C) FOR 0.15 MI (0.24 KM) TO A
 HU2820'PARALLEL TAXIWAY LEFT (B) , TURN LEFT AND GO NORTHEAST ON THE PARALLEL
 HU2820'TAXIWAY 0.9 MI (1.4 KM) TO THE APPROACH END OF RUNWAY 23 AND THE
 HU2820'STATION ON THE SOUTHEAST SIDE OF THE RUNWAY. THE STATION IS FLUSH WITH
 HU2820'THE GROUND, 149.9 FT (45.7 M) SOUTHEAST OF THE RUNWAY CENTER AT THE
 HU2820'THRESHOLD END, 122.1 FT (37.2 M) NORTHEAST OF A RUNWAY LIGHT (171) ,
 HU2820'65.4 FT (19.9 M) SOUTHEAST OF THE MOST SOUTHEASTERLY THRESHOLD LIGHT
 HU2820'(181) AND 8.5 FT (2.6 M) SOUTH OF A RUNWAY END IDENTIFIER LIGHT (REIL)
 HU2820'.
 HU2820
 HU2820                          STATION RECOVERY (2000)
 HU2820
 HU2820'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (ED)
 HU2820'MARK FOUND DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2821 ***********************************************************************
 HU2821  DESIGNATION -  AP STA B SBY
 HU2821  PID         -  HU2821
 HU2821  STATE/COUNTY-  MD/WICOMICO
 HU2821  COUNTRY     -  US
 HU2821  USGS QUAD   -  SALISBURY (2016)
 HU2821
 HU2821                         *CURRENT SURVEY CONTROL
 HU2821  ______________________________________________________________________
 HU2821* NAD 83(2011) POSITION- 38 20 01.28035(N) 075 30 59.38167(W)   ADJUSTED
 HU2821* NAD 83(2011) ELLIP HT-   -22.814 (meters)        (06/27/12)   ADJUSTED
 HU2821* NAD 83(2011) EPOCH   -  2010.00
 HU2821* NAVD 88 ORTHO HEIGHT -    13.2   (meters)       43.    (feet) GPS OBS
 HU2821  ______________________________________________________________________
 HU2821  NAVD 88 orthometric height was determined with geoid model    GEOID96
 HU2821  GEOID HEIGHT    -        -35.918 (meters)                     GEOID96
 HU2821  GEOID HEIGHT    -        -35.923 (meters)                     GEOID18
 HU2821  NAD 83(2011) X  -  1,252,888.045 (meters)                     COMP
 HU2821  NAD 83(2011) Y  - -4,850,318.628 (meters)                     COMP
 HU2821  NAD 83(2011) Z  -  3,934,550.660 (meters)                     COMP
 HU2821  LAPLACE CORR    -         -1.17  (seconds)                    DEFLEC18
 HU2821
 HU2821  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2821  Standards:
 HU2821         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2821            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2821  -------------------------------------------------------------------
 HU2821  NETWORK    1.56   2.74           0.49   0.73   1.40      0.19084404
 HU2821  -------------------------------------------------------------------
 HU2821  Click here for local accuracies and other accuracy information.
 HU2821
 HU2821.This mark is at Salisbury-Wicomico Co Regional Airport (SBY)
 HU2821
 HU2821.The horizontal coordinates were established by GPS observations
 HU2821.and adjusted by the National Geodetic Survey in June 2012.
 HU2821
 HU2821.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2821.been affixed to the stable North American tectonic plate. See 
 HU2821.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2821
 HU2821.The horizontal coordinates are valid at the epoch date displayed above
 HU2821.which is a decimal equivalence of Year/Month/Day.
 HU2821
 HU2821.The orthometric height was determined by GPS observations and a
 HU2821.high-resolution geoid model.
 HU2821
 HU2821.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2821.GEOID18 height accuracy estimate available here.
 HU2821
 HU2821.Click photographs - Photos may exist for this station.
 HU2821
 HU2821.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2821
 HU2821.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2821
 HU2821.The ellipsoidal height was determined by GPS observations
 HU2821.and is referenced to NAD 83.
 HU2821
 HU2821. The following values were computed from the NAD 83(2011) position.
 HU2821
 HU2821;                    North         East     Units Scale Factor Converg.
 HU2821;SPC MD       -    75,096.295   529,700.824   MT  0.99999431   +0 55 52.0
 HU2821;SPC MD       -   246,378.43  1,737,860.12   sFT  0.99999431   +0 55 52.0
 HU2821;UTM  18      - 4,242,965.757   454,859.232   MT  0.99962509   -0 19 13.3
 HU2821
 HU2821!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2821!SPC MD       -   1.00000358  x   0.99999431  =   0.99999789
 HU2821!UTM  18      -   1.00000358  x   0.99962509  =   0.99962867
 HU2821
 HU2821:                Primary Azimuth Mark                     Grid Az
 HU2821:SPC MD       -  AP STA A SBY                             035 43 46.6
 HU2821:UTM  18      -  AP STA A SBY                             036 58 51.9
 HU2821
 HU2821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5485942965(NAD 83)
 HU2821
 HU2821|---------------------------------------------------------------------|
 HU2821| PID    Reference Object                     Distance      Geod. Az  |
 HU2821|                                                           dddmmss.s |
 HU2821| HU2820 AP STA A SBY                        APPROX. 1.5 KM 0363938.6 |
 HU2821|---------------------------------------------------------------------|
 HU2821
 HU2821                          SUPERSEDED SURVEY CONTROL
 HU2821
 HU2821  NAD 83(2007)-  38 20 01.28067(N)    075 30 59.38308(W) AD(2002.00) 0
 HU2821  ELLIP H (02/10/07)  -22.777  (m)                       GP(2002.00)    
 HU2821  ELLIP H (10/29/02)  -22.769  (m)                       GP(       ) 4 2
 HU2821  NAD 83(1991)-  38 20 01.28174(N)    075 30 59.38289(W) AD(       ) 3
 HU2821  ELLIP H (01/25/99)  -22.702  (m)                       GP(       ) 4 2
 HU2821  NAD 83(1991)-  38 20 01.28021(N)    075 30 59.38196(W) AD(       ) 1
 HU2821  ELLIP H (01/15/92)  -22.736  (m)                       GP(       ) 4 2
 HU2821  NGVD 29              13.38   (m)           43.9    (f) LEVELING    3  
 HU2821
 HU2821.Superseded values are not recommended for survey control.
 HU2821
 HU2821.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2821.See file dsdata.pdf to determine how the superseded data were derived.
 HU2821
 HU2821_MARKER: DT = TOPOGRAPHIC STATION DISK
 HU2821_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2821_STAMPING: AP 1967 STA B
 HU2821_MARK LOGO: CGS
 HU2821_PROJECTION: FLUSH
 HU2821_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2821_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2821+STABILITY: SURFACE MOTION
 HU2821_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2821+SATELLITE: SATELLITE OBSERVATIONS - September 19, 1996
 HU2821
 HU2821  HISTORY     - Date     Condition        Report By
 HU2821  HISTORY     - 1967     MONUMENTED       CGS
 HU2821  HISTORY     - 19920615 GOOD             NGS
 HU2821  HISTORY     - 19920806 GOOD
 HU2821  HISTORY     - 19960919 GOOD             NGS
 HU2821  HISTORY     - 20000308 MARK NOT FOUND   NGS
 HU2821
 HU2821                          STATION DESCRIPTION
 HU2821
 HU2821'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 HU2821'THE STATION IS LOCATED ON THE SALISBURY WICOMICO COUNTY AIRPORT NEAR
 HU2821'THE RUNWAY END 5.
 HU2821'TO REACH THE AIRPORT FROM THE JUNCTION OF U.S.13 AND U.S.13 BYPASS ON
 HU2821'THE NORTH SIDE OF SALISBURY. GO SOUTHEAST ON U.S.13 BYPASS FOR 3.0 MI
 HU2821'(4.8 KM) TO THE SECOND EXIT FOR U.S.50, TAKE THE SECOND EXIT (50
 HU2821'EAST) AND GO 2.3 MI (3.7 KM) TO A CROSSROAD (WALSTON SWITCH RD), TURN
 HU2821'RIGHT AND GO SOUTH FOR 1.7 MI (2.7 KM) TO A CROSSROAD, CONTINUE AHEAD
 HU2821'(SOUTH) FOR 0.9 MI (1.4 KM) TO A T INTERSECTION. TURN LEFT AND GO
 HU2821'SOUTHEAST FOR 0.4 MI (0.6 KM) TO A ROAD LEFT LEADING TO THE TERMINAL.
 HU2821'TURN LEFT AND GO 0.2 MI (0.3 KM) TO THE SALISBURY WICOMICO COUNTY
 HU2821'AIRPORT AUTHORITY BUILDING AND FBO.
 HU2821'THE STATION IS A STANDARD NOS DISK STAMPED---AP 1967 STA B--- WHICH IS
 HU2821'SET IN THE TOP OF A CONCRETE POST THAT IS FLUSH WITH THE GROUND. THE
 HU2821'STATION IS 149.9 FT (45.7 M) SOUTHEAST OF THE CENTERLINE END, 117.2
 HU2821'FT (35.7 M) SOUTHWEST OF THE FIRST RUNWAY LIGHT ON THE SOUTHEAST SIDE
 HU2821'OF THE RUNWAY, 65.5 FT (20.0 M) SOUTHEAST OF THETHRESHOLD LIGHT 119,
 HU2821'AND 36.7 FT (11.2 M) SOUTHEAST OF THE RUNWAY END IDENTIFIER LIGHT
 HU2821'(REIL).
 HU2821
 HU2821                          STATION RECOVERY (1992)
 HU2821
 HU2821'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 HU2821'STATION IS LOCATED ON THE SALISBURY WICOMICO COUNTY AIRPORT NEAR
 HU2821'RUNWAY END 5 AND 149.9 FT (45.7 M) SE OF THE CENTERLINE END, 117.2 FT
 HU2821'(35.7 M) SW OF THE FIRST RUNWAY LIGHT ON THE SE SIDE OF THE RUNWAY,
 HU2821'65.5 FT (20.0 M) SE OF THRESHOLD LIGHT 119, AND 36.7 FT (11.2 M) SE OF
 HU2821'A REIL.  STATION IS A STANDARD TOPO DISK SET IN THE TOP OF A CONCRETE
 HU2821'POST FLUSH WITH THE GROUND AND STAMPED AP 1967 STA A.
 HU2821
 HU2821                          STATION RECOVERY (1992)
 HU2821
 HU2821'RECOVERED 1992
 HU2821'RECOVERED IN GOOD CONDITION.
 HU2821
 HU2821                          STATION RECOVERY (1996)
 HU2821
 HU2821'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 HU2821'THE STATION IS LOCATED 5.0 MI (8.0 KM) EAST-SOUTHEAST OF SALISBURY,
 HU2821'2.5 MI (4.0 KM) SOUTH OF US HIGHWAY 50 AND AT THE SALISBURY WICOMICO
 HU2821'COUNTY AIRPORT NEAR THE APPROACH END OF RUNWAY 5. OWNERSHIP--WICOMICO
 HU2821'COUNTY, AIRPORT MANAGER IS ROBERT L.  BRYANT, 5485 AIRPORT TERMINAL
 HU2821'ROAD, UNIT A, SALISBURY, MD 21804-1545.  PHONE (410) 548-4827.  THIS
 HU2821'IS A CONTROLLED AIRFIELD AND PERMISSION IS REQUIRED TO ENTER. TO REACH
 HU2821'THE STATION FROM THE JUNCTION OF US HIGHWAY 50 AND US HIGHWAY 13
 HU2821'BYPASS ON THE EAST SIDE OF SALISBURY, GO EAST ON US HIGHWAY 50 FOR 2.3
 HU2821'MI (3.7 KM) TO A INTERSECTION, TURN RIGHT AND GO SOUTH ON A PAVED ROAD
 HU2821'(WALSTON SWITCH ROAD) FOR 1.5 MI (2.4 KM) TO A INTERSECTION, CONTINUE
 HU2821'AHEAD AND GO SOUTHERLY ON A PAVED ROAD FOR 0.9 MI (1.4 KM) TO A
 HU2821'T-JUNCTION, TURN LEFT AND GO SOUTHERLY ON A PAVED ROAD (AIRPORT ROAD)
 HU2821'FOR 0.9 MI (1.4 KM) TO A PAVED ROAD AND PARKING LOT ON THE LEFT
 HU2821'(BAYLAND AVIATION) , TURN LEFT AND GO EAST ON THE PAVED ROAD FOR 0.1
 HU2821'MI (0.2 KM) TO A GATE AHEAD, PASS THROUGH GATE, BEAR SLIGHTLY TO THE
 HU2821'RIGHT AND GO SOUTHEAST ON A TAXIWAY (C) FOR 0.2 MI (0.3 KM) TO THE
 HU2821'APPROACH END OF RUNWAY 5 AND THE STATION AHEAD ON THE SOUTHEAST SIDE
 HU2821'OF THE RUNWAY NEAR THE REIL.  THE STATION IS FLUSH WITH THE GROUND,
 HU2821'149.9 FT (45.7 M) SOUTHEAST OF THE RUNWAY CENTER AT THE THRESHOLD END,
 HU2821'117.2 FT (35.7 M) SOUTHWEST OF THE FIRST RUNWAY LIGHT, 65.5 FT (20.0
 HU2821'M) SOUTHEAST OF THE MOST SOUTHEASTERLY THRESHOLD LIGHT AND 36.7 FT
 HU2821'(11.2 M) NORTHEAST OF A RUNWAY END IDENTIFIER LIGHT (REIL) .
 HU2821
 HU2821                          STATION RECOVERY (2000)
 HU2821
 HU2821'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (ED)
 HU2821'MARK REPORTED DESTROYED BY AIRPORT AUTHORITY DURING AIRPORT
 HU2821'CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3140 ***********************************************************************
 DS3140  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3140  DESIGNATION -  APG 84 RM
 DS3140  PID         -  DS3140
 DS3140  STATE/COUNTY-  MD/HARFORD
 DS3140  COUNTRY     -  US
 DS3140  USGS QUAD   -  ABERDEEN (2016)
 DS3140
 DS3140                         *CURRENT SURVEY CONTROL
 DS3140  ______________________________________________________________________
 DS3140* NAD 83(2011) POSITION- 39 30 08.67863(N) 076 09 55.04544(W)   ADJUSTED
 DS3140* NAD 83(2011) ELLIP HT-   -12.740 (meters)        (12/12/24)   ADJUSTED
 DS3140* NAD 83(2011) EPOCH   -  2010.00
 DS3140* NAVD 88 ORTHO HEIGHT -    20.37  (meters)       66.8   (feet) GPS OBS
 DS3140  ______________________________________________________________________
 DS3140  GEOID HEIGHT    -        -33.131 (meters)                     GEOID18
 DS3140  NAD 83(2011) X  -  1,178,398.027 (meters)                     COMP
 DS3140  NAD 83(2011) Y  - -4,785,061.806 (meters)                     COMP
 DS3140  NAD 83(2011) Z  -  4,035,501.938 (meters)                     COMP
 DS3140  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 DS3140
 DS3140  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3140  Standards:
 DS3140         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3140            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3140  -------------------------------------------------------------------
 DS3140  NETWORK    0.90   1.37           0.40   0.33   0.70     -0.09822146
 DS3140  -------------------------------------------------------------------
 DS3140  Click here for local accuracies and other accuracy information.
 DS3140
 DS3140.The horizontal coordinates were established by GPS observations
 DS3140.and adjusted by the MD DEPT OF TRANSP in December 2024.
 DS3140
 DS3140.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3140.been affixed to the stable North American tectonic plate. See 
 DS3140.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3140
 DS3140.The horizontal coordinates are valid at the epoch date displayed above
 DS3140.which is a decimal equivalence of Year/Month/Day.
 DS3140
 DS3140.The orthometric height was determined by GPS observations and a
 DS3140.high-resolution geoid model using precise GPS observation and
 DS3140.processing techniques.
 DS3140
 DS3140.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3140.GEOID18 height accuracy estimate available here.
 DS3140
 DS3140.Click photographs - Photos may exist for this station.
 DS3140
 DS3140.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3140
 DS3140.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3140
 DS3140.The ellipsoidal height was determined by GPS observations
 DS3140.and is referenced to NAD 83.
 DS3140
 DS3140. The following values were computed from the NAD 83(2011) position.
 DS3140
 DS3140;                    North         East     Units Scale Factor Converg.
 DS3140;SPC MD       -   204,110.794   471,793.434   MT  1.00000959   +0 31 26.0
 DS3140;SPC MD       -   669,653.50  1,547,875.62   sFT  1.00000959   +0 31 26.0
 DS3140;UTM  18      - 4,373,180.186   399,811.608   MT  0.99972358   -0 44 28.7
 DS3140
 DS3140!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3140!SPC MD       -   1.00000200  x   1.00000959  =   1.00001159
 DS3140!UTM  18      -   1.00000200  x   0.99972358  =   0.99972558
 DS3140
 DS3140_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9981173180(NAD 83)
 DS3140
 DS3140                          SUPERSEDED SURVEY CONTROL
 DS3140
 DS3140.No superseded survey control is available for this station.
 DS3140
 DS3140_MARKER: DD = SURVEY DISK
 DS3140_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS3140_STAMPING: REF. TO MON 84 1953
 DS3140_MARK LOGO: MD-025
 DS3140_PROJECTION: FLUSH
 DS3140_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS3140_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3140+SATELLITE: SATELLITE OBSERVATIONS - December 11, 2023
 DS3140
 DS3140  HISTORY     - Date     Condition        Report By
 DS3140  HISTORY     - 19530101 MONUMENTED       MD-025
 DS3140  HISTORY     - 20231211 GOOD             MDSHA
 DS3140
 DS3140                          STATION DESCRIPTION
 DS3140
 DS3140'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DS3140'THE MARK IS LOCATED ABOUT 5.1 MI (8.2 KM) SOUTHWEST OF HAVRE DE GRACE,
 DS3140'3.1 MI (5.0 KM) NORTHEAST OF PERRYMAN AND IN THE TOWN OF ABERDEEN, MD.
 DS3140'TO REACH THE MARK FROM THE INTERSECTION OF US 40 (PULASKI HIGHWAY)AND
 DS3140'MD 22 PROCEED SOUTH ON MD 22 FOR 0.60 KM (0.37 MI) TO THE INTERSECTION
 DS3140'WITH OLD POST ROAD.  TURN RIGHT ON OLD POST ROAD AND PROCEED FOR 1.21
 DS3140'KM (0.75 MI) TO THE INTERSECTION WITH ABERDEEN BOULEVARD.  TURN LEFT
 DS3140'ON ABERDEEN BOULEVARD AND PROCEED FOR 0.03 KM (0.02 MI) TO THE MARK ON
 DS3140'THE RIGHT.
 DS3140'
 DS3140'THE MARK IS 68.1 FT (20.8 M) EAST OF A UTILITY POLE NUMBERED BGE
 DS3140'101444, 66.9 FT (20.4 M) SOUTH OF THE CENTERLINE OF SOUTH POST ROAD,
 DS3140'28.1 FT (8.6 M) WEST OF THE CENTERLINE OF ABERDEEN BOULEVARD, 14.1 FT
 DS3140'(4.3 M) NORTHWEST OF A STORM DRAIN MANHOLE SET IN THE TOP OF A 4-IN
 DS3140'(10 CM) SQUARE CONCRETE POST AND ABOUT 1 FT (0.3 M) HIGHER THAN THE
 DS3140'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3581 ***********************************************************************
 JV3581  DESIGNATION -  APPAL
 JV3581  PID         -  JV3581
 JV3581  STATE/COUNTY-  MD/FREDERICK
 JV3581  COUNTRY     -  US
 JV3581  USGS QUAD   -  MYERSVILLE (2016)
 JV3581
 JV3581                         *CURRENT SURVEY CONTROL
 JV3581  ______________________________________________________________________
 JV3581* NAD 83(1991) POSITION- 39 32 11.46258(N) 077 36 18.17139(W)   ADJUSTED
 JV3581* NAVD 88 ORTHO HEIGHT -   389.615 (meters)     1278.26  (feet) ADJUSTED
 JV3581  ______________________________________________________________________
 JV3581  GEOID HEIGHT    -        -33.445 (meters)                     GEOID18
 JV3581  LAPLACE CORR    -          9.56  (seconds)                    DEFLEC18
 JV3581  DYNAMIC HEIGHT  -        389.389 (meters)     1277.52  (feet) COMP
 JV3581  MODELED GRAVITY -    980,033.8   (mgal)                       NAVD 88
 JV3581
 JV3581  HORZ ORDER      -  FIRST
 JV3581  VERT ORDER      -  SECOND    CLASS 0
 JV3581
 JV3581.The horizontal coordinates were established by classical geodetic methods
 JV3581.and adjusted by the National Geodetic Survey in January 1992.
 JV3581
 JV3581.The orthometric height was determined by differential leveling and
 JV3581.adjusted by the NATIONAL GEODETIC SURVEY
 JV3581.in June 1991.
 JV3581
 JV3581.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3581.GEOID18 height accuracy estimate available here.
 JV3581
 JV3581.Click photographs - Photos may exist for this station.
 JV3581
 JV3581.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3581
 JV3581.The dynamic height is computed by dividing the NAVD 88
 JV3581.geopotential number by the normal gravity value computed on the
 JV3581.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3581.degrees latitude (g = 980.6199 gals.).
 JV3581
 JV3581.The modeled gravity was interpolated from observed gravity values.
 JV3581
 JV3581. The following values were computed from the NAD 83(1991) position.
 JV3581
 JV3581;                    North         East     Units Scale Factor Converg.
 JV3581;SPC MD       -   207,741.695   347,984.564   MT  1.00001628   -0 22 47.1
 JV3581;SPC MD       -   681,565.88  1,141,679.36   sFT  1.00001628   -0 22 47.1
 JV3581;UTM  18      - 4,379,558.277   276,123.043   MT  1.00021713   -1 39 32.3
 JV3581
 JV3581!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3581!SPC MD       -   0.99994412  x   1.00001628  =   0.99996040
 JV3581!UTM  18      -   0.99994412  x   1.00021713  =   1.00016124
 JV3581
 JV3581:                Primary Azimuth Mark                     Grid Az
 JV3581:SPC MD       -  APPAL AZ MK                              122 59 04.0
 JV3581:UTM  18      -  APPAL AZ MK                              124 15 49.2
 JV3581
 JV3581_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7612379558(NAD 83)
 JV3581
 JV3581|---------------------------------------------------------------------|
 JV3581| PID    Reference Object                     Distance      Geod. Az  |
 JV3581|                                                           dddmmss.s |
 JV3581| CK6535 APPAL RM 1                           22.806 METERS 04947     |
 JV3581| JV4613 CATOCTIN MTN RADIO WFMD FM MST      APPROX.10.0 KM 1140236.4 |
 JV3581| JV4607 MYERSVILLE AM TEL TWR KGB 25        APPROX.10.3 KM 1171844.0 |
 JV3581| CK6534 APPAL AZ MK                                        1223616.9 |
 JV3581| CK6536 APPAL RM 2                           20.737 METERS 21727     |
 JV3581|---------------------------------------------------------------------|
 JV3581
 JV3581                          SUPERSEDED SURVEY CONTROL
 JV3581
 JV3581  NAD 83(1986)-  39 32 11.46239(N)    077 36 18.18094(W) AD(       ) 1
 JV3581  NAD 27      -  39 32 11.10890(N)    077 36 19.21880(W) AD(       ) 1
 JV3581  NGVD 29             389.82   (m)         1278.9    (f) LEVELING    3  
 JV3581  NGVD 29 (11/26/84)  389.823  (m)         1278.94   (f) ADJUSTED    2 0
 JV3581
 JV3581.Superseded values are not recommended for survey control.
 JV3581
 JV3581.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3581.See file dsdata.pdf to determine how the superseded data were derived.
 JV3581
 JV3581_MARKER: DS = TRIANGULATION STATION DISK
 JV3581_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3581_STAMPING: APPAL 1957
 JV3581_MARK LOGO: CGS
 JV3581_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3581+STABILITY: SURFACE MOTION
 JV3581
 JV3581  HISTORY     - Date     Condition        Report By
 JV3581  HISTORY     - 1958     MONUMENTED       CGS
 JV3581  HISTORY     - 1958     GOOD             CGS
 JV3581  HISTORY     - 1968     GOOD             CGS
 JV3581
 JV3581                          STATION DESCRIPTION
 JV3581
 JV3581'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV3581'THE STATION IS LOCATED ABOUT 13 MILES NORTHWEST OF FREDERICK,
 JV3581'10 MILES SOUTHEAST OF HAGERSTOWN AND JUST NORTH OF U.S. HIGHWAY
 JV3581'40 WHERE IT CROSSES SOUTH MOUNTAIN.  THE MARK IS 40 FEET WEST OF
 JV3581'A FENCE, 15 FEET NORTHEAST OF AN 8 INCH BLAZED TREE, 15 FEET
 JV3581'SOUTHWEST OF A 4 INCH BLAZED TREE, 7 FEET NORTHWEST OF A WITNESS
 JV3581'POST AND IN THE CENTER OF AN OLD TRAIL.  THE MARK PROJECTS
 JV3581'4 INCHES AND THE DISK IS STAMPED APPAL 1957.
 JV3581'
 JV3581'REFERENCE MARK NO. 1 IS 20 FEET EAST OF THE CENTER OF OLD TRAIL
 JV3581'AND 10 FEET WEST OF FENCE.  THE MARK PROJECTS 4 INCHES AND THE
 JV3581'DISK IS STAMPED APPAL NO 1 1957.
 JV3581'
 JV3581'REFERENCE MARK NO. 2 IS 12 FEET NORTH OF CUT BANK OF
 JV3581'HIGHWAY.  THE MARK PROJECTS 4 INCHES AND THE DISK IS STAMPED
 JV3581'APPAL NO 2 1957.
 JV3581'
 JV3581'NO AZIMUTH MARK WAS SET.
 JV3581'
 JV3581'TO REACH FROM THE JUNCTION OF U.S. HIGHWAYS 340 AND 40 IN THE
 JV3581'WEST EDGE OF FREDERICK, GO WEST ON HIGHWAY 40 2.2 MILES TO THE
 JV3581'JUNCTION OF ALTERNATE U.S. HIGHWAY 40.  CONTINUE ON U.S. HIGHWAY
 JV3581'40 8.3 MILES TO STATE HIGHWAY 153.  CONTINUE ON HIGHWAY 40 3.1
 JV3581'MILES TO THE TOP OF SOUTH MOUNTAIN AND SIGN APPALACHIAN TRAIL,
 JV3581'TURN RIGHT FOR ABOUT 50 YARDS, TURN RIGHT ABOUT 50 YARDS, TURN
 JV3581'RIGHT ABOUT 300 FEET ON OLD TRAIL TO THE STATION.
 JV3581'
 JV3581'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV3581
 JV3581                          STATION RECOVERY (1958)
 JV3581
 JV3581'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV3581'2.4 MI SE FROM MOUNT LENA.
 JV3581'1.2 MILES SOUTHEAST ALONG THE MAIN ROAD FROM THE JUNCTION OF SAN
 JV3581'MAR ROAD AT MOUNT LENA, THENCE 1.0 MILE SOUTH ALONG U.S. HIGHWAY
 JV3581'40, THENCE 0.05 MILE NORTH ALONG A GRAVELED ROAD, THENCE 0.1 MILE
 JV3581'EAST ALONG A TRACK ROAD, THENCE 0.05 MILE SOUTH, 75 FEET NORTHEAST
 JV3581'OF THE TOP OF A CUT BANK FOR U.S. HIGHWAY 40, 7.0 FEET NORTH OF A
 JV3581'WITNESS POST, AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 JV3581'0.6 FOOT ABOVE THE GROUND.
 JV3581
 JV3581                          STATION RECOVERY (1968)
 JV3581
 JV3581'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (WOK)
 JV3581'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD
 JV3581'CONDITION.  DIRECTION AND DISTANCE TO THE REFERENCE MARKS CHECKED
 JV3581'ADEQUATELY.
 JV3581'
 JV3581'THE LAND ON WHICH THE STATION IS ESTABLISHED IS OWNED BY A
 JV3581'MR. H. M. IRWIN.
 JV3581'
 JV3581'AN AZIMUTH MARK HAS NOW BEEN ESTABLISHED AND IS VISIBLE FROM THE
 JV3581'STATION MARK.
 JV3581'
 JV3581'A NEW DESCRIPTION TO REACH THE STATION FOLLOWS--
 JV3581'
 JV3581'THE STATION IS REACHED FROM THE JUNCTION OF U. S. HIGHWAYS 40 WEST
 JV3581'AND 15 NORTH IN FREDERICK BY GOING NORTHWEST ON HIGHWAY 40 FOR
 JV3581'1.6 MILES TO THE JUNCTION OF U. S. HIGHWAY 40 ALTERNATE.  CONTINUE
 JV3581'NORTHWEST ON HIGHWAY 40 FOR 8.3 MILES TO THE JUNCTION OF STATE
 JV3581'HIGHWAY 153.  CONTINUE NORTHWEST ON HIGHWAY 40 FOR 2.0 MILES TO
 JV3581'THE AZIMUTH MARK ON THE LEFT IN A HIGHWAY CONCRETE CURB AS
 JV3581'DESCRIBED BELOW.  CONTINUE STRAIGHT AHEAD ON HIGHWAY 40 FOR
 JV3581'1.15 MILES TO A PRIVATE ROAD RIGHT WHICH BELONGS TO A MR.
 JV3581'FREEMAN.  TURN RIGHT AND GO 0.15 MILE TO THE END OF THE ROAD,
 JV3581'A POLE GATE AND MR. FREEMANS HOME.  MR. FREEMAN HAS TWO
 JV3581'KEYS FOR TWO LOCKED GATES WHICH ARE IN ROUTE TO THE STATION FROM
 JV3581'THIS POINT.  PASS THROUGH THE POLE GATE AND CONTINUE ACROSS A
 JV3581'PASTURE LOT FOR ABOUT 60 FEET TO A LOCKED GATE.  PASS THROUGH
 JV3581'THE GATE AND CONTINUE ACROSS A PASTURE LOT FOR ABOUT 250 FEET
 JV3581'TO ANOTHER LOCKED GATE.  PASS THROUGH THE GATE, THEN LEFT
 JV3581'AND GO SOUTHWESTERLY ON AN OLD WOODS ROAD FOR ABOUT 300 FEET TO
 JV3581'A ROAD FORK.  KEEP LEFT AND GO STRAIGHT AHEAD ON ROAD FOR ABOUT
 JV3581'200 FEET TO THE STATION MARK IN THE ROAD.
 JV3581'
 JV3581'THE STATION MARK (NOTE 1A AND 7A) IS STAMPED APPAL 1957 AND
 JV3581'PROJECTS ABOUT 4 INCHES.
 JV3581'
 JV3581'REFERENCE MARK 1 (NOTE 11A) IS STAMPED APPAL NO 1 1957 AND
 JV3581'PROJECTS ABOUT 4 INCHES.
 JV3581'
 JV3581'REFERENCE MARK 2 (NOTE 11A) IS STAMPED APPAL NO 2 1957 AND
 JV3581'PROJECTS ABOUT 4 INCHES.
 JV3581'
 JV3581'THE AZIMUTH MARK IS A CORPS OF ENGINEERS, U. S. ARMY DISK
 JV3581'STAMPED APPAL AZ MK ARMY MAP SERVICE 1968, CEMENTED IN A DRILL
 JV3581'HOLE IN THE TOP OF A HIGHWAY CONCRETE CURBING WHICH IS ABOUT
 JV3581'6 INCHES HIGHER THAN THE HIGHWAY LEVEL.  IT IS ABOUT 250 FEET
 JV3581'SOUTHEAST OF A DRIVEWAY WHICH LEADS TO THE WILLIAMS CONSTRUCTION
 JV3581'COMPANY, 27 FEET SOUTHWEST OF THE CENTERLINE OF U. S. HIGHWAY
 JV3581'40, 4.5 FEET NORTHEAST OF A METAL WITNESS POST WHICH HAS A METAL
 JV3581'SIGN ATTACHED AND 2.0 FEET NORTHWEST OF THE SOUTHEAST END OF THE
 JV3581'CONCRETE CURBING.
 JV3581'
 JV3581'HEIGHT OF LIGHT ABOVE STATION MARK 72.8 FEET.
 JV3581'
 JV3581'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV3581'13 MILES NORTHWEST OF FREDERICK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3582 ***********************************************************************
 JV3582  DESIGNATION -  APPAL RM 1
 JV3582  PID         -  JV3582
 JV3582  STATE/COUNTY-  MD/FREDERICK
 JV3582  COUNTRY     -  US
 JV3582  USGS QUAD   -  MYERSVILLE (2016)
 JV3582
 JV3582                         *CURRENT SURVEY CONTROL
 JV3582  ______________________________________________________________________
 JV3582* NAD 83(1986) POSITION- 39 32 11.94   (N) 077 36 17.44   (W)   HD_HELD1
 JV3582* NAVD 88 ORTHO HEIGHT -   390.156 (meters)     1280.04  (feet) ADJUSTED
 JV3582  ______________________________________________________________________
 JV3582  GEOID HEIGHT    -        -33.444 (meters)                     GEOID18
 JV3582  DYNAMIC HEIGHT  -        389.929 (meters)     1279.29  (feet) COMP
 JV3582  MODELED GRAVITY -    980,033.8   (mgal)                       NAVD 88
 JV3582
 JV3582  VERT ORDER      -  SECOND    CLASS 0
 JV3582
 JV3582.The horizontal coordinates were determined by differentially corrected
 JV3582.hand held GPS observations or other comparable positioning techniques
 JV3582.and have an estimated accuracy of +/- 3 meters.
 JV3582
 JV3582.The orthometric height was determined by differential leveling and
 JV3582.adjusted by the NATIONAL GEODETIC SURVEY
 JV3582.in June 1991.
 JV3582
 JV3582.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3582.GEOID18 height accuracy estimate available here.
 JV3582
 JV3582.Click photographs - Photos may exist for this station.
 JV3582
 JV3582.The dynamic height is computed by dividing the NAVD 88
 JV3582.geopotential number by the normal gravity value computed on the
 JV3582.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3582.degrees latitude (g = 980.6199 gals.).
 JV3582
 JV3582.The modeled gravity was interpolated from observed gravity values.
 JV3582
 JV3582;                    North         East    Units  Estimated Accuracy
 JV3582;SPC MD       -   207,756.3     348,002.1     MT  (+/- 3 meters HH1 GPS) 
 JV3582
 JV3582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7614079572(NAD 83)
 JV3582
 JV3582                          SUPERSEDED SURVEY CONTROL
 JV3582
 JV3582  NGVD 29 (11/26/84)  390.364  (m)         1280.72   (f) ADJUSTED    2 0
 JV3582
 JV3582.Superseded values are not recommended for survey control.
 JV3582
 JV3582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3582.See file dsdata.pdf to determine how the superseded data were derived.
 JV3582
 JV3582_MARKER: DR = REFERENCE MARK DISK
 JV3582_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3582_STAMPING: APPAL NO 1 1957
 JV3582_MARK LOGO: CGS
 JV3582_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3582+STABILITY: SURFACE MOTION
 JV3582
 JV3582  HISTORY     - Date     Condition        Report By
 JV3582  HISTORY     - 1957     MONUMENTED       CGS
 JV3582  HISTORY     - 1958     GOOD             CGS
 JV3582
 JV3582                          STATION DESCRIPTION
 JV3582
 JV3582'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3582'2.4 MI SE FROM MOUNT LENA.
 JV3582'1.2 MILES SOUTHEAST ALONG THE MAIN ROAD FROM THE JUNCTION OF SAN
 JV3582'MAR ROAD AT MOUNT LENA, THENCE 1.0 MILE SOUTH ALONG U.S. HIGHWAY
 JV3582'40, THENCE 0.05 MILE NORTH ALONG A GRAVELED ROAD, THENCE 0.1
 JV3582'MILE EAST ALONG A TRACK ROAD, THENCE 0.05 MILE SOUTH, 20 FEET
 JV3582'EAST OF THE CENTER OF AN OLD TRAIL, 74.82 FEET NORTH-NORTHEAST
 JV3582'OF THE TRIANGULATION STATION, AND 10 FEET WEST OF A FENCE.  A
 JV3582'STANDARD DISK, STAMPED APPAL NO 1 1957 AND SET IN THE TOP OF A
 JV3582'CONCRETE POST PROJECTING 4 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3583 ***********************************************************************
 JV3583  DESIGNATION -  APPAL RM 2
 JV3583  PID         -  JV3583
 JV3583  STATE/COUNTY-  MD/FREDERICK
 JV3583  COUNTRY     -  US
 JV3583  USGS QUAD   -  MYERSVILLE (2016)
 JV3583
 JV3583                         *CURRENT SURVEY CONTROL
 JV3583  ______________________________________________________________________
 JV3583* NAD 83(1986) POSITION- 39 32 10.93   (N) 077 36 18.70   (W)   HD_HELD1
 JV3583* NAVD 88 ORTHO HEIGHT -   389.537 (meters)     1278.01  (feet) ADJUSTED
 JV3583  ______________________________________________________________________
 JV3583  GEOID HEIGHT    -        -33.445 (meters)                     GEOID18
 JV3583  DYNAMIC HEIGHT  -        389.311 (meters)     1277.26  (feet) COMP
 JV3583  MODELED GRAVITY -    980,033.8   (mgal)                       NAVD 88
 JV3583
 JV3583  VERT ORDER      -  SECOND    CLASS 0
 JV3583
 JV3583.The horizontal coordinates were determined by differentially corrected
 JV3583.hand held GPS observations or other comparable positioning techniques
 JV3583.and have an estimated accuracy of +/- 3 meters.
 JV3583
 JV3583.The orthometric height was determined by differential leveling and
 JV3583.adjusted by the NATIONAL GEODETIC SURVEY
 JV3583.in June 1991.
 JV3583
 JV3583.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3583.GEOID18 height accuracy estimate available here.
 JV3583
 JV3583.Click photographs - Photos may exist for this station.
 JV3583
 JV3583.The dynamic height is computed by dividing the NAVD 88
 JV3583.geopotential number by the normal gravity value computed on the
 JV3583.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3583.degrees latitude (g = 980.6199 gals.).
 JV3583
 JV3583.The modeled gravity was interpolated from observed gravity values.
 JV3583
 JV3583;                    North         East    Units  Estimated Accuracy
 JV3583;SPC MD       -   207,725.4     347,971.8     MT  (+/- 3 meters HH1 GPS) 
 JV3583
 JV3583_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7610979542(NAD 83)
 JV3583
 JV3583                          SUPERSEDED SURVEY CONTROL
 JV3583
 JV3583  NGVD 29 (11/26/84)  389.745  (m)         1278.69   (f) ADJUSTED    2 0
 JV3583
 JV3583.Superseded values are not recommended for survey control.
 JV3583
 JV3583.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3583.See file dsdata.pdf to determine how the superseded data were derived.
 JV3583
 JV3583_MARKER: DR = REFERENCE MARK DISK
 JV3583_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3583_STAMPING: APPAL NO 2 1957
 JV3583_MARK LOGO: CGS
 JV3583_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3583+STABILITY: SURFACE MOTION
 JV3583
 JV3583  HISTORY     - Date     Condition        Report By
 JV3583  HISTORY     - 1957     MONUMENTED       CGS
 JV3583  HISTORY     - 1958     GOOD             CGS
 JV3583
 JV3583                          STATION DESCRIPTION
 JV3583
 JV3583'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3583'2.4 MI SE FROM MOUNT LENA.
 JV3583'1.2 MILES SOUTHEAST ALONG THE MAIN ROAD FROM THE JUNCTION OF
 JV3583'SAN MAR ROAD AT MOUNT LENA, THENCE 1.0 MILE SOUTH ALONG U.S.
 JV3583'HIGHWAY 40, THENCE 0.05 MILE NORTH ALONG A GRAVELED ROAD, THENCE
 JV3583'0.1 MILE EAST ALONG A TRACK ROAD, THENCE 0.05 MILE SOUTH, 68.05
 JV3583'FEET SOUTHWEST OF THE TRIANGULATION STATION, AND 12 FEET NORTH
 JV3583'OF A CUT BANK OF HIGHWAY.  A STANDARD DISK, STAMPED APPAL NO 2
 JV3583'1957 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES
 JV3583'ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7994 ***********************************************************************
 AJ7994  HT_MOD      -  This is a Height Modernization Survey Station.
 AJ7994  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7994  DESIGNATION -  APPLE
 AJ7994  PID         -  AJ7994
 AJ7994  STATE/COUNTY-  MD/CECIL
 AJ7994  COUNTRY     -  US
 AJ7994  USGS QUAD   -  NEWARK WEST (2016)
 AJ7994
 AJ7994                         *CURRENT SURVEY CONTROL
 AJ7994  ______________________________________________________________________
 AJ7994* NAD 83(2011) POSITION- 39 41 53.59948(N) 075 48 43.08111(W)   ADJUSTED
 AJ7994* NAD 83(2011) ELLIP HT-    68.373 (meters)        (06/27/12)   ADJUSTED
 AJ7994* NAD 83(2011) EPOCH   -  2010.00
 AJ7994* NAVD 88 ORTHO HEIGHT -   101.37  (meters)      332.6   (feet) GPS OBS
 AJ7994  ______________________________________________________________________
 AJ7994  NAVD 88 orthometric height was determined with an earlier geoid model
 AJ7994  GEOID HEIGHT    -        -33.002 (meters)                     GEOID18
 AJ7994  NAD 83(2011) X  -  1,204,501.934 (meters)                     COMP
 AJ7994  NAD 83(2011) Y  - -4,764,329.441 (meters)                     COMP
 AJ7994  NAD 83(2011) Z  -  4,052,304.849 (meters)                     COMP
 AJ7994  LAPLACE CORR    -          0.99  (seconds)                    DEFLEC18
 AJ7994
 AJ7994  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7994  Standards:
 AJ7994         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7994            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7994  -------------------------------------------------------------------
 AJ7994  NETWORK    0.34   0.76           0.15   0.13   0.39     -0.02839435
 AJ7994  -------------------------------------------------------------------
 AJ7994  Click here for local accuracies and other accuracy information.
 AJ7994
 AJ7994.The horizontal coordinates were established by GPS observations
 AJ7994.and adjusted by the National Geodetic Survey in June 2012.
 AJ7994
 AJ7994.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7994.been affixed to the stable North American tectonic plate. See 
 AJ7994.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7994
 AJ7994.The horizontal coordinates are valid at the epoch date displayed above
 AJ7994.which is a decimal equivalence of Year/Month/Day.
 AJ7994
 AJ7994.The orthometric height was determined by GPS observations and a
 AJ7994.high-resolution geoid model using precise GPS observation and
 AJ7994.processing techniques.
 AJ7994
 AJ7994.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7994.GEOID18 height accuracy estimate available here.
 AJ7994
 AJ7994.Click photographs - Photos may exist for this station.
 AJ7994
 AJ7994.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7994
 AJ7994.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7994
 AJ7994.The ellipsoidal height was determined by GPS observations
 AJ7994.and is referenced to NAD 83.
 AJ7994
 AJ7994. The following values were computed from the NAD 83(2011) position.
 AJ7994
 AJ7994;                    North         East     Units Scale Factor Converg.
 AJ7994;SPC MD       -   226,186.626   501,898.417   MT  1.00005286   +0 44 44.3
 AJ7994;SPC MD       -   742,080.62  1,646,645.06   sFT  1.00005286   +0 44 44.3
 AJ7994;UTM  18      - 4,394,578.778   430,386.167   MT  0.99965966   -0 31 07.2
 AJ7994
 AJ7994!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7994!SPC MD       -   0.99998927  x   1.00005286  =   1.00004213
 AJ7994!UTM  18      -   0.99998927  x   0.99965966  =   0.99964894
 AJ7994
 AJ7994_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3038694578(NAD 83)
 AJ7994
 AJ7994                          SUPERSEDED SURVEY CONTROL
 AJ7994
 AJ7994  NAD 83(2007)-  39 41 53.59967(N)    075 48 43.08202(W) AD(2002.00) 0
 AJ7994  ELLIP H (02/10/07)   68.406  (m)                       GP(2002.00)    
 AJ7994  NAD 83(1991)-  39 41 53.59974(N)    075 48 43.08221(W) AD(       ) A
 AJ7994  ELLIP H (02/12/02)   68.413  (m)                       GP(       ) 4 1
 AJ7994  NAVD 88 (02/21/06)  101.4    (m)  GEOID03  model used  GPS OBS        
 AJ7994  NAVD 88 (02/12/02)  101.4    (m)  GEOID99  model used  GPS OBS        
 AJ7994
 AJ7994.Superseded values are not recommended for survey control.
 AJ7994
 AJ7994.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7994.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7994
 AJ7994_MARKER: DD = SURVEY DISK
 AJ7994_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7994_STAMPING: APPLE 2000
 AJ7994_MARK LOGO: MDSHA
 AJ7994_PROJECTION: FLUSH
 AJ7994_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ7994_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7994+STABILITY: SURFACE MOTION
 AJ7994_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7994+SATELLITE: SATELLITE OBSERVATIONS - February 10, 2022
 AJ7994
 AJ7994  HISTORY     - Date     Condition        Report By
 AJ7994  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ7994  HISTORY     - 20030311 GOOD             USPSQD
 AJ7994  HISTORY     - 20051120 GOOD             JMT
 AJ7994  HISTORY     - 20090309 GOOD             GWS
 AJ7994  HISTORY     - 20090417 GOOD             JCLS
 AJ7994  HISTORY     - 20110414 GOOD             PADT
 AJ7994  HISTORY     - 20220210 GOOD             MDSHA
 AJ7994
 AJ7994                          STATION DESCRIPTION
 AJ7994
 AJ7994'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7994'THE STATION IS LOCATED ABOUT 3.2 MILES (5.1 KM) WEST OF NEWARK
 AJ7994'DELAWARE, 6.5 MILES (10.5 KM) NORTH OF ELKTON, AND 13.3 MILES (21.4
 AJ7994'KM) EAST OF RISING SUN.  TO REACH THE STATION FROM THE INTERSECTION OF
 AJ7994'U.S.HIGHWAY 40 AND STATE HIGHWAY 213 IN ELKTON, GO NORTH ALONG STATE
 AJ7994'HIGHWAY 213 FOR 4.8 MILES (7.7 KM) TO A TRAFFIC CIRCLE, CONTINUE NORTH
 AJ7994'ALONG STATE HIGHWAY 213 FOR 2.9 MILES (4.7 KM) TO STATE HIGHWAY 273.
 AJ7994'TURN RIGHT AND GO EAST ALONG STATE HIGHWAY 273 FOR 2.95 MILES (4.75
 AJ7994'KM) TO THE INTERSECTION WITH APPLETON ROAD. CONTINUE EAST ALONG STATE
 AJ7994'HIGHWAY 273 FOR 0.15 MILES (0.24 KM) TO THE STATION ON THE RIGHT.  THE
 AJ7994'STATION IS A STANDARD MARYLAND STATE HIGHWAY SURVEY DISK SET IN THE
 AJ7994'TOP OF A 12 INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 AJ7994'SURFACE OF THE GROUND.  IT IS 35.8 FEET (10.9 M) SOUTH OF THE CENTER
 AJ7994'LINE OF THE HIGHWAY, 42.0 FEET (12.8 M) EAST-SOUTHEAST OF THE EAST END
 AJ7994'OF A 12 INCH CONCRETE PIPE UNDER A FIELD ENTRANCE, 69.5 FEET (21.2 M)
 AJ7994'EAST OF TELEPHONE POLE NUMBER 204, 23.5 FEET (7.2 M) WEST OF THE
 AJ7994'PROJECTED WEST SIDE OF DWELLING NUMBER 5711 LOCATED ON THE NORTH SIDE
 AJ7994'OF THE HIGHWAY, AND LEVEL WITH THE SURFACE OF THE HIGHWAY.
 AJ7994
 AJ7994                          STATION RECOVERY (2003)
 AJ7994
 AJ7994'RECOVERY NOTE BY US POWER SQUADRON 2003 (RG)
 AJ7994'RECOVERED IN GOOD CONDITION.
 AJ7994
 AJ7994                          STATION RECOVERY (2005)
 AJ7994
 AJ7994'RECOVERY NOTE BY JOHNSON MIRMIRAN AND THOMPSON PA 2005
 AJ7994'RECOVERED IN GOOD CONDITION.
 AJ7994
 AJ7994                          STATION RECOVERY (2009)
 AJ7994
 AJ7994'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (JMS)
 AJ7994'RECOVERED AS DESCRIBED.
 AJ7994
 AJ7994                          STATION RECOVERY (2009)
 AJ7994
 AJ7994'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2009 (MRY)
 AJ7994'RECOVERED IN GOOD CONDITION.
 AJ7994
 AJ7994                          STATION RECOVERY (2011)
 AJ7994
 AJ7994'RECOVERY NOTE BY PA DEPT OF TRANSP 2011 (PAL)
 AJ7994'RECOVERED IN GOOD CONDITION.
 AJ7994
 AJ7994                          STATION RECOVERY (2022)
 AJ7994
 AJ7994'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 AJ7994'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7178 ***********************************************************************
 HV7178  DESIGNATION -  APPLE RESET
 HV7178  PID         -  HV7178
 HV7178  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7178  COUNTRY     -  US
 HV7178  USGS QUAD   -  DEALE (2016)
 HV7178
 HV7178                         *CURRENT SURVEY CONTROL
 HV7178  ______________________________________________________________________
 HV7178* NAD 83(1991) POSITION- 38 50 27.57251(N) 076 31 56.62776(W)   ADJUSTED
 HV7178* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7178  ______________________________________________________________________
 HV7178  GEOID HEIGHT    -        -33.474 (meters)                     GEOID18
 HV7178  LAPLACE CORR    -         -3.57  (seconds)                    DEFLEC18
 HV7178  HORZ ORDER      -  THIRD
 HV7178
 HV7178.The horizontal coordinates were established by classical geodetic methods
 HV7178.and adjusted by the National Geodetic Survey in January 1992.
 HV7178
 HV7178.The orthometric height was scaled from a topographic map.
 HV7178
 HV7178.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7178.GEOID18 height accuracy estimate available here.
 HV7178
 HV7178.Click photographs - Photos may exist for this station.
 HV7178
 HV7178.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7178
 HV7178. The following values were computed from the NAD 83(1991) position.
 HV7178
 HV7178;                    North         East     Units Scale Factor Converg.
 HV7178;SPC MD       -   130,458.984   440,595.101   MT  0.99995003   +0 17 36.5
 HV7178;SPC MD       -   428,014.18  1,445,519.09   sFT  0.99995003   +0 17 36.5
 HV7178;UTM  18      - 4,300,247.112   367,007.190   MT  0.99981780   -0 57 40.3
 HV7178
 HV7178!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7178!SPC MD       -   1.00000514  x   0.99995003  =   0.99995517
 HV7178!UTM  18      -   1.00000514  x   0.99981780  =   0.99982294
 HV7178
 HV7178:                Primary Azimuth Mark                     Grid Az
 HV7178:SPC MD       -  CHALK                                    229 17 11.0
 HV7178:UTM  18      -  CHALK                                    230 32 27.8
 HV7178
 HV7178_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6700700247(NAD 83)
 HV7178
 HV7178|---------------------------------------------------------------------|
 HV7178| PID    Reference Object                     Distance      Geod. Az  |
 HV7178|                                                           dddmmss.s |
 HV7178| CX2042 APPLE RM                              7.170 METERS 10600     |
 HV7178| HV7187 CHALK                               APPROX. 0.6 KM 2293447.5 |
 HV7178|---------------------------------------------------------------------|
 HV7178
 HV7178                          SUPERSEDED SURVEY CONTROL
 HV7178
 HV7178  NAD 83(1986)-  38 50 27.56981(N)    076 31 56.63986(W) AD(       ) 3
 HV7178  NAD 27      -  38 50 27.17800(N)    076 31 57.78300(W) AD(       ) 3
 HV7178  USSD        -  38 50 27.54000(N)    076 31 57.59800(W) AD(       ) 3
 HV7178
 HV7178.Superseded values are not recommended for survey control.
 HV7178
 HV7178.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7178.See file dsdata.pdf to determine how the superseded data were derived.
 HV7178
 HV7178_MARKER: DD = SURVEY DISK
 HV7178_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7178_MARK LOGO: MDDNR
 HV7178_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7178+STABILITY: SURFACE MOTION
 HV7178
 HV7178  HISTORY     - Date     Condition        Report By
 HV7178  HISTORY     - 1975     MONUMENTED       MDDNR
 HV7178  HISTORY     - 1984     GOOD             MDDNR
 HV7178
 HV7178                          STATION DESCRIPTION
 HV7178
 HV7178'DESCRIBED BY MD DEPT OF NAT RES 1975 (GEH)
 HV7178'NAIL IN PINE STUB (STA) NOT RECOVERED 1930.
 HV7178'
 HV7178'MSFC-USCS (RM) RECOVD.  SEE NOTES BELOW ON NEW MONUMENT.
 HV7178'
 HV7178'NEW TO REACH--FROM U.S. POST OFFICE AT SHADY SIDE MD. LOCATED ON
 HV7178'MD. ROUTE 468 (SHADY SIDE ROAD) TRAVEL NORTH ON RT. 468 0.10
 HV7178'MILES TO STEAM BOAT ROAD, TURN LEFT ONTO STEAM BOAT ROAD AND
 HV7178'TRAVEL WEST FOR 0.75 MILES TO A SET OF BRICK GATE POSTS AT SHARP
 HV7178'BEND TO RIGHT IN STEAM BOAT ROAD, CONTINUE WEST BETWEEN BRICK
 HV7178'POSTS ONTO DIRT DRIVEWAY TO A FORK AT TENNIS COURT, TAKE LEFT FORK
 HV7178'AND CONTINUE TO MR. WALTER KUZMUKS HOUSE AND THE STATION ON THE
 HV7178'NORTHWEST END OF MR. KUZMUKS LAWN IN HIS FRONT YARD.
 HV7178'
 HV7178'STATION MARK HAS BEEN REPLACED WITH A 10 IN CONCRETE MONUMENT
 HV7178'FLUSH WITH THE SURFACE OF THE LAWN AND MARKED BY A MARYLAND STATE
 HV7178'DISK STAMPED.  APPLE RM 1906 MSFC/USCS.  A SUBSURFACE MARK WAS
 HV7178'ALSO ESTABLISHED 2.5 FT BELOW THE SURFACE OF THE LAWN AND 0.2 FT.
 HV7178'BELOW THE BOTTOM OF THE SURFACE MONUMENT AND IS MARKED WITH
 HV7178'ANOTHER MARYLAND STATE DISK STAMPED APPLE RM 1906 USCS/MDSFCAND
 HV7178'SET IN CONC.  THE STATION IS LOCATED 30.3 FT. EAST OF EDGE OF
 HV7178'BANK, 15.2 FT. EAST OF SMALL MAPLE TREE, 25.8 FT. NORTHEAST OF
 HV7178'SMALL WILLOW TREE, 40.0 FT. NORTH OF 30 IN LOCUST TREE AND 38.3
 HV7178'FT. SOUTHEAST OF 12 IN TREE.
 HV7178
 HV7178                          STATION RECOVERY (1984)
 HV7178
 HV7178'RECOVERY NOTE BY MD DEPT OF NAT RES 1984 (LW)
 HV7178'APPLE RM 1906 USCS MSFC RECOVERED GOOD, FOUND AS DESCRIBED,
 HV7178'STATION IS ON THE S EDGE OF A FLOWER BED THAT IS ON THE S SIDE OF
 HV7178'A CHAIN LINK FENCE THAT MARKS THE NORTH SIDE OF MR. KUZMUKS
 HV7178'PROPERTY.
 HV7178'
 HV7178'NOTE--THIS RM IS ALSO A RM FOR STATION BAR 1933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6505 ***********************************************************************
 HV6505  DESIGNATION -  APPLEGARTH
 HV6505  PID         -  HV6505
 HV6505  STATE/COUNTY-  MD/DORCHESTER
 HV6505  COUNTRY     -  US
 HV6505  USGS QUAD   -  RICHLAND POINT (2017)
 HV6505
 HV6505                         *CURRENT SURVEY CONTROL
 HV6505  ______________________________________________________________________
 HV6505* NAD 83(1991) POSITION- 38 13 56.32204(N) 076 08 22.40894(W)   ADJUSTED
 HV6505* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6505  ______________________________________________________________________
 HV6505  GEOID HEIGHT    -        -35.478 (meters)                     GEOID18
 HV6505  LAPLACE CORR    -         -2.43  (seconds)                    DEFLEC18
 HV6505  HORZ ORDER      -  FIRST
 HV6505
 HV6505.The horizontal coordinates were established by classical geodetic methods
 HV6505.and adjusted by the National Geodetic Survey in January 1992.
 HV6505
 HV6505.The orthometric height was scaled from a topographic map.
 HV6505
 HV6505.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6505.GEOID18 height accuracy estimate available here.
 HV6505
 HV6505.Click photographs - Photos may exist for this station.
 HV6505
 HV6505.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6505
 HV6505. The following values were computed from the NAD 83(1991) position.
 HV6505
 HV6505;                    North         East     Units Scale Factor Converg.
 HV6505;SPC MD       -    63,144.343   475,335.528   MT  1.00001247   +0 32 24.2
 HV6505;SPC MD       -   207,166.07  1,559,496.64   sFT  1.00001247   +0 32 24.2
 HV6505;UTM  18      - 4,232,204.828   400,264.736   MT  0.99972250   -0 42 19.0
 HV6505
 HV6505!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6505!SPC MD       -   1.00000545  x   1.00001247  =   1.00001792
 HV6505!UTM  18      -   1.00000545  x   0.99972250  =   0.99972795
 HV6505
 HV6505:                Primary Azimuth Mark                     Grid Az
 HV6505:SPC MD       -  HOOPER STRAIT LIGHTHOUSE 1898            095 42 56.6
 HV6505:UTM  18      -  HOOPER STRAIT LIGHTHOUSE 1898            096 57 39.8
 HV6505
 HV6505_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0026432204(NAD 83)
 HV6505
 HV6505|---------------------------------------------------------------------|
 HV6505| PID    Reference Object                     Distance      Geod. Az  |
 HV6505|                                                           dddmmss.s |
 HV6505| CX2045 APPLEGARTH RM 3 AZIMUTH                            0823957.0 |
 HV6505| HV6448 HOOPER STRAIT LIGHTHOUSE 1898       APPROX. 5.6 KM 0961520.8 |
 HV6505| HV6455 ABE POLE TARGET                     APPROX. 6.2 KM 1340745.1 |
 HV6505| HV6461 WRECK BEACHED FLOATING TARGET       APPROX. 7.3 KM 1381440.9 |
 HV6505| HV6459 WILL POLE TARGET                    APPROX. 6.5 KM 1383759.7 |
 HV6505| HV6462 CAT POLE TARGET                     APPROX. 7.4 KM 1404938.3 |
 HV6505| HV6465 DOT POLE TARGET                     APPROX. 7.7 KM 1465122.9 |
 HV6505| HV6466 EBB POLE TARGET                     APPROX. 8.2 KM 1475143.3 |
 HV6505| HV6482 NOT                                 APPROX.10.7 KM 1545514.5 |
 HV6505| CX2043 APPLEGARTH RM 1                      27.002 METERS 17955     |
 HV6505| CX2044 APPLEGARTH RM 2                      29.854 METERS 26624     |
 HV6505| HV6422 HOOPERSVILLE ME CHURCH CUPOLA       APPROX. 4.7 KM 3110854.3 |
 HV6505|---------------------------------------------------------------------|
 HV6505
 HV6505                          SUPERSEDED SURVEY CONTROL
 HV6505
 HV6505  NAD 83(1986)-  38 13 56.32213(N)    076 08 22.42673(W) AD(       ) 1
 HV6505  NAD 27      -  38 13 55.87600(N)    076 08 23.64700(W) AD(       ) 1
 HV6505
 HV6505.Superseded values are not recommended for survey control.
 HV6505
 HV6505.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6505.See file dsdata.pdf to determine how the superseded data were derived.
 HV6505
 HV6505_MARKER: H = DRILL HOLE
 HV6505_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6505
 HV6505  HISTORY     - Date     Condition        Report By
 HV6505  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6505  HISTORY     - 1931     GOOD             CGS
 HV6505  HISTORY     - 1934     GOOD             CGS
 HV6505  HISTORY     - 1948     GOOD             CGS
 HV6505  HISTORY     - 1961     GOOD             CGS
 HV6505  HISTORY     - 1983     GOOD             MDDNR
 HV6505
 HV6505                          STATION DESCRIPTION
 HV6505
 HV6505'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6505'STATION IS ON THE EASTERN SHORE OF CHESAPEAKE BAY, ON THE SOUTHERN
 HV6505'END OF LOWER HOOPER ISLAND, ABOUT 3-1/2 MILES E OF HOOPER STRAIT
 HV6505'LIGHT, ON MARSH, ABOUT 1 FOOT ABOVE HIGH WATER, AND 150 YARDS N
 HV6505'OF SHORE.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HV6505'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6505'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV6505'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK
 HV6505'IN TOP OF THE POST.  SUBSURFACE MARK IS CENTER OF 2-INCH
 HV6505'DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF
 HV6505'THE MONUMENT, AS DESCRIBED IN NOTE 17.  DISTANCES AND
 HV6505'AZIMUTHS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LEFT
 HV6505'ONE OF ROW OF LARGE PINE TREES, 1/8 MILE, 108 DEG 35 MIN.
 HV6505'CHIMNEY OF HOUSE, 3/4 MILE, 146 DEG 20 MIN.  CHIMNEY IN
 HV6505'MIDDLE OF HOUSE, 3/4 MILE, 163 DEG 02 MIN.  CHIMNEY IN CENTER
 HV6505'OF HOUSE, 3/4 MILE, 176 DEG 07 MIN.  CHIMNEY OF ABANDONED
 HV6505'HOUSE, 1/2 MILE, 187 DEG 40 MIN.  NEAR PEAK OF HOUSE
 HV6505'SHOWING OVER ROOF, 1/2 MILE, 194 DEG 21 MIN.  RIGHT TANGENT
 HV6505'TO CLUMP OF PINE TREES, 300 YARDS, 211 DEG 48 MIN.
 HV6505
 HV6505                          STATION RECOVERY (1931)
 HV6505
 HV6505'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1931 (EHB)
 HV6505'STATION RECOVERED AS DESCRIBED.  DESCRIPTION O.K., EXCEPT THAT
 HV6505'ONLY AZIMUTH MARKS VISIBLE ARE THE FOLLOWING--LEFT ONE OF ROW
 HV6505'OF LARGE PINE TREES 1/8 MILE, 108 DEG 35 MIN, AND RIGHT TANGENT
 HV6505'TO CLUMP OF PINE TREES, 300 YARDS 211 DEG 48 MIN.  ONLY HOUSE
 HV6505'SHOWING IS CHURCH WHICH IS NOT MENTIONED IN DESCRIPTION.
 HV6505'
 HV6505'STATION IS 113 METERS N FROM SHORE.
 HV6505
 HV6505                          STATION RECOVERY (1934)
 HV6505
 HV6505'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6505'THE STATION MARK AND TWO REFERENCE MARKS WERE FOUND IN GOOD
 HV6505'CONDITION, AND THE DISTANCES WERE CHECKED.  THE STATION IS
 HV6505'LOCATED ON LOWER HOOPERS (OR APPLEGARTH) ISLAND, ABOUT 3-1/2 MILES
 HV6505'W OF HOOPER STRAIT LIGHTHOUSE, 150 METERS N OF THE S SHORE OF THE
 HV6505'ISLAND, IN THE MARSH LAND 1 FOOT ABOVE WATER.  IT IS AN OLD
 HV6505'STATION OF THE MARYLAND SHELL FISH COMMISSION AND THE U.S. COAST
 HV6505'SURVEY, AND IS MARKED BY A SQUARE CONCRETE MONUMENT WITH A
 HV6505'TRIANGLE, CONTAINING A HOLE TO MARK STATION CENTER, AND THE
 HV6505'LETTERS M.S.F.C. AND U.S.C.S. CUT IN THE TOP.  IT IS FLUSH
 HV6505'WITH THE GROUND.
 HV6505'
 HV6505'THE REFERENCE MARKS ARE STANDARD DISKS SET IN SQUARE CONCRETE
 HV6505'MONUMENTS, AS DESCRIBED IN NOTE 11A.  REFERENCE MARK NO.1 IS
 HV6505'27.002 METERS S OF THE STATION, AND REFERENCE MARK NO.2 IS 29.854
 HV6505'METERS W OF THE STATION.
 HV6505'
 HV6505'AN AZIMUTH MARK WAS ESTABLISHED ABOUT 0.2 MILE ESE OF THE
 HV6505'STATION, 20 METERS NE OF THE WATER LINE.  IT IS AS DESCRIBED IN
 HV6505'NOTE 11A, AND PROJECTS ABOUT 4 INCHES ABOVE THE GROUND.  VISIBLE
 HV6505'FROM THE GROUND AT THE STATION.
 HV6505
 HV6505                          STATION RECOVERY (1948)
 HV6505
 HV6505'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948 (RHT)
 HV6505'THE STATION MARK, TWO REFERENCE MARKS, AND THE AZIMUTH MARK WERE
 HV6505'FOUND IN GOOD CONDITION, AND THE DISTANCES WERE CHECKED.
 HV6505'
 HV6505'THE STATION IS LOCATED ON LOWER HOOPER (OR APPLEGARTH) ISLAND,
 HV6505'ABOUT 3-1/2 MILES W OF HOOPER STRAIT LIGHTHOUSE, 150 METERS N OF
 HV6505'THE S SHORE OF THE ISLAND, IN MARSH LAND ABOUT 6 INCHES ABOVE
 HV6505'WATER.  IT IS AN OLD STATION OF THE MARYLAND SHELL FISH COMMISSION
 HV6505'AND THE U.S. COAST AND GEODETIC SURVEY.
 HV6505'
 HV6505'STATION MARK IS AN 8-INCH SQUARE CONCRETE MONUMENT WITH A
 HV6505'TRIANGLE CONTAINING A HOLE TO MARK THE STATION CENTER AND THE
 HV6505'LETTERS MDSFCAND USGS CAST IN THE TOP.  THE MARK IS SET FLUSH
 HV6505'WITH THE GROUND.
 HV6505'
 HV6505'THE REFERENCE MARKS ARE BRONZE REFERENCE DISKS SET IN SQUARE
 HV6505'CONCRETE MONUMENTS.  REFERENCE MARK 1 IS 27.002 METERS S OF THE
 HV6505'STATION AND REFERENCE MARK 2 IS 29.854 METERS W OF THE STATION.
 HV6505'
 HV6505'THE AZIMUTH MARK IS A BRONZE AZIMUTH DISK ABOUT 0.25 MILE ESE
 HV6505'OF THE STATION, 20 METERS NE OF THE SHORELINE, AND IS VISIBLE FROM
 HV6505'THE GROUND EXCEPT FOR TWO PATCHES OF LOW BUSHES.  IT IS SET IN A
 HV6505'SQUARE CONCRETE MONUMENT.
 HV6505
 HV6505                          STATION RECOVERY (1961)
 HV6505
 HV6505'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6505'STATION MARK AND REFERENCE MARKS RECOVERED.  THE AZIMUTH MARK
 HV6505'COULD NOT BE FOUND AND HAS PROBABLY BEEN DESTROYED.  THE PUBLISHED
 HV6505'DESCRIPTION IS ADEQUATE.  THE MANY WOODEN STAKES SURROUNDING THE
 HV6505'STATION ARE OF BENEFIT IN RECOVERING THE STATION.
 HV6505
 HV6505                          STATION RECOVERY (1983)
 HV6505
 HV6505'RECOVERY NOTE BY MD DEPT OF NAT RES 1983 (LW)
 HV6505'CAST MAFC. USCS. FAIR-POOR SOUTH 1/3 OF TOP CRACKED OFF, IN SOFT
 HV6505'MARSH RM 1 AND RM 2 FOUND - DISCS NOT READABLE DUE TO CONCRETE
 HV6505'RESIDUE AND CORROSION.
 HV6505'STA. 1 FOOT S OF 2 ROUND POSTS, RM 1 BETWEEN ROUND POST AND 2X2
 HV6505'RM 2 BETWEEN ROUND POST AND 2X4 ALL POSTS OLD, PROJECT 4 FEET - 5
 HV6505'FEET NUMEROUS OLD GUY STAKES IN AREA.
 HV6505'RM 3 NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7187 ***********************************************************************
 JV7187  DESIGNATION -  APPOLDS
 JV7187  PID         -  JV7187
 JV7187  STATE/COUNTY-  MD/FREDERICK
 JV7187  COUNTRY     -  US
 JV7187  USGS QUAD   -  EMMITSBURG (2016)
 JV7187
 JV7187                         *CURRENT SURVEY CONTROL
 JV7187  ______________________________________________________________________
 JV7187* NAD 83(2011) POSITION- 39 37 33.76897(N) 077 19 43.47712(W)   ADJUSTED
 JV7187* NAD 83(2011) ELLIP HT-    93.143 (meters)        (06/27/12)   ADJUSTED
 JV7187* NAD 83(2011) EPOCH   -  2010.00
 JV7187* NAVD 88 ORTHO HEIGHT -   126.3   (meters)      414.    (feet) GPS OBS
 JV7187  ______________________________________________________________________
 JV7187  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7187  GEOID HEIGHT    -        -33.420 (meters)                     GEOID93
 JV7187  GEOID HEIGHT    -        -33.115 (meters)                     GEOID18
 JV7187  NAD 83(2011) X  -  1,079,095.876 (meters)                     COMP
 JV7187  NAD 83(2011) Y  - -4,799,551.623 (meters)                     COMP
 JV7187  NAD 83(2011) Z  -  4,046,151.638 (meters)                     COMP
 JV7187  LAPLACE CORR    -          1.85  (seconds)                    DEFLEC18
 JV7187
 JV7187  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7187  Standards:
 JV7187         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7187            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7187  -------------------------------------------------------------------
 JV7187  NETWORK    1.45   1.80           0.65   0.52   0.92      0.06191307
 JV7187  -------------------------------------------------------------------
 JV7187  Click here for local accuracies and other accuracy information.
 JV7187
 JV7187.The horizontal coordinates were established by GPS observations
 JV7187.and adjusted by the National Geodetic Survey in June 2012.
 JV7187
 JV7187.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7187.been affixed to the stable North American tectonic plate. See 
 JV7187.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7187
 JV7187.The horizontal coordinates are valid at the epoch date displayed above
 JV7187.which is a decimal equivalence of Year/Month/Day.
 JV7187
 JV7187.The orthometric height was determined by GPS observations and a
 JV7187.high-resolution geoid model.
 JV7187
 JV7187.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7187.GEOID18 height accuracy estimate available here.
 JV7187
 JV7187.Click photographs - Photos may exist for this station.
 JV7187
 JV7187.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7187
 JV7187.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7187
 JV7187.The ellipsoidal height was determined by GPS observations
 JV7187.and is referenced to NAD 83.
 JV7187
 JV7187. The following values were computed from the NAD 83(2011) position.
 JV7187
 JV7187;                    North         East     Units Scale Factor Converg.
 JV7187;SPC MD       -   217,560.559   371,773.835   MT  1.00003554   -0 12 22.8
 JV7187;SPC MD       -   713,779.93  1,219,727.99   sFT  1.00003554   -0 12 22.8
 JV7187;UTM  18      - 4,388,844.732   300,128.674   MT  1.00009186   -1 29 08.5
 JV7187
 JV7187!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7187!SPC MD       -   0.99998539  x   1.00003554  =   1.00002093
 JV7187!UTM  18      -   0.99998539  x   1.00009186  =   1.00007725
 JV7187
 JV7187_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0012888844(NAD 83)
 JV7187
 JV7187                          SUPERSEDED SURVEY CONTROL
 JV7187
 JV7187  NAD 83(2007)-  39 37 33.76932(N)    077 19 43.47781(W) AD(2002.00) 0
 JV7187  ELLIP H (02/10/07)   93.170  (m)                       GP(2002.00)    
 JV7187  ELLIP H (08/30/02)   93.162  (m)                       GP(       ) 4 2
 JV7187  NAD 83(1991)-  39 37 33.76974(N)    077 19 43.47830(W) AD(       ) 1
 JV7187  ELLIP H (02/09/94)   93.097  (m)                       GP(       ) 4 1
 JV7187
 JV7187.Superseded values are not recommended for survey control.
 JV7187
 JV7187.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7187.See file dsdata.pdf to determine how the superseded data were derived.
 JV7187
 JV7187_MARKER: DD = SURVEY DISK
 JV7187_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7187_STAMPING: APPOLDS 1993
 JV7187_MARK LOGO: MD-021
 JV7187_PROJECTION: RECESSED 2 CENTIMETERS
 JV7187_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7187_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7187+STABILITY: SURFACE MOTION
 JV7187_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7187+SATELLITE: SATELLITE OBSERVATIONS - March 01, 2017
 JV7187
 JV7187  HISTORY     - Date     Condition        Report By
 JV7187  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7187  HISTORY     - 20170301 GOOD             BASE9
 JV7187
 JV7187                          STATION DESCRIPTION
 JV7187
 JV7187'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7187'FROM THE INTERSECTION OF MD RTE 77 (ROCKY RIDGE ROAD) AND MD RTE 550
 JV7187'IN THURMONT, MD, PROCEED EAST ON RTE 77 4.3 MILES (6.9 KM) TO THE
 JV7187'VILLAGE OF ROCKY RIDGE AND THE INTERSECTION WITH MD RTE 76 (MOTTERS
 JV7187'STATION ROAD). TURN LEFT ON MOTTERS STATION ROAD AND PROCEED NORTH
 JV7187'1.5 MILES (2.4 KM) TO INTERSECTION WITH APPOLDS ROAD. TURN LEFT AND
 JV7187'PROCEED WEST ALONG APPOLDS ROAD 0.3 MILES (0.5 KM) TO THE STATION ON
 JV7187'THE RIGHT. STATION IS 20 FEET (6.1 M) NORTH OF THE CENTERLINE OF
 JV7187'APPOLDS ROAD AND 40 FEET (12.2 M) EAST OF C AND P POWER POLE NO. 10.
 JV7187'STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND CONCRETE
 JV7187'MONUMENT SET FLUSH WITH THE GROUND.
 JV7187
 JV7187                          STATION RECOVERY (2017)
 JV7187
 JV7187'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 JV7187'THE MARK IS 12.39 M (40.6 FT) EAST OF EAST SIDE OF POWER POINT NO 10
 JV7187'AND 6.20 M (20.3 FT) NORTH OF THE CENTERLINE OF APPOLDS ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5812 ***********************************************************************
 JV5812  DESIGNATION -  APPROX
 JV5812  PID         -  JV5812
 JV5812  STATE/COUNTY-  MD/HOWARD
 JV5812  COUNTRY     -  US
 JV5812  USGS QUAD   -  RELAY (2016)
 JV5812
 JV5812                         *CURRENT SURVEY CONTROL
 JV5812  ______________________________________________________________________
 JV5812* NAD 83(1991) POSITION- 39 13 30.25235(N) 076 43 32.35071(W)   ADJUSTED
 JV5812* NAVD 88 ORTHO HEIGHT -    62.    (meters)      203.    (feet) SCALED
 JV5812  ______________________________________________________________________
 JV5812  GEOID HEIGHT    -        -32.474 (meters)                     GEOID18
 JV5812  LAPLACE CORR    -         -6.31  (seconds)                    DEFLEC18
 JV5812  HORZ ORDER      -  THIRD
 JV5812
 JV5812.The horizontal coordinates were established by classical geodetic methods
 JV5812.and adjusted by the National Geodetic Survey in January 1992.
 JV5812
 JV5812.The orthometric height was scaled from a topographic map.
 JV5812
 JV5812.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5812.GEOID18 height accuracy estimate available here.
 JV5812
 JV5812.Click photographs - Photos may exist for this station.
 JV5812
 JV5812.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5812
 JV5812. The following values were computed from the NAD 83(1991) position.
 JV5812
 JV5812;                    North         East     Units Scale Factor Converg.
 JV5812;SPC MD       -   173,027.529   423,689.435   MT  0.99996838   +0 10 19.9
 JV5812;SPC MD       -   567,674.48  1,390,054.42   sFT  0.99996838   +0 10 19.9
 JV5812;UTM  18      - 4,343,172.086   351,042.680   MT  0.99987320   -1 05 29.2
 JV5812
 JV5812!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5812!SPC MD       -   0.99999540  x   0.99996838  =   0.99996378
 JV5812!UTM  18      -   0.99999540  x   0.99987320  =   0.99986860
 JV5812
 JV5812:                Primary Azimuth Mark                     Grid Az
 JV5812:SPC MD       -  FRANCES                                  030 32 56.0
 JV5812:UTM  18      -  FRANCES                                  031 48 45.1
 JV5812
 JV5812_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5104243172(NAD 83)
 JV5812
 JV5812|---------------------------------------------------------------------|
 JV5812| PID    Reference Object                     Distance      Geod. Az  |
 JV5812|                                                           dddmmss.s |
 JV5812| JV5825 FRANCES                             APPROX. 1.6 KM 0304315.9 |
 JV5812| CA9887 APPROX RM 1                          14.296 METERS 07725     |
 JV5812| CA9888 APPROX RM 2                          13.256 METERS 29417     |
 JV5812|---------------------------------------------------------------------|
 JV5812
 JV5812                          SUPERSEDED SURVEY CONTROL
 JV5812
 JV5812  NAD 83(1986)-  39 13 30.24976(N)    076 43 32.35971(W) AD(       ) 3
 JV5812  NAD 27      -  39 13 29.86550(N)    076 43 33.46560(W) AD(       ) 3
 JV5812
 JV5812.Superseded values are not recommended for survey control.
 JV5812
 JV5812.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5812.See file dsdata.pdf to determine how the superseded data were derived.
 JV5812
 JV5812_MARKER: DS = TRIANGULATION STATION DISK
 JV5812_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5812_STAMPING: APPOX 1957
 JV5812_MARK LOGO: CGS
 JV5812_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5812+STABILITY: SURFACE MOTION
 JV5812
 JV5812  HISTORY     - Date     Condition        Report By
 JV5812  HISTORY     - 1957     MONUMENTED       CGS
 JV5812  HISTORY     - 1958     GOOD             CGS
 JV5812  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 JV5812
 JV5812                          STATION DESCRIPTION
 JV5812
 JV5812'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5812'STATION IS LOCATED ABOUT 7.0 MILES SOUTHWEST OF THE CENTER OF
 JV5812'BALTIMORE, ABOUT 1-1/2 MILES NORTH OF ELKRIDGE AND ABOUT 0.25
 JV5812'MILE SOUTH OF PATAPSCO RIVER.  STATION IS 16 FEET SOUTHWEST OF
 JV5812'APPROXIMATE CENTERLINE OF PAVED DRIVEWAY, 17 FEET WEST-NORTHWEST
 JV5812'OF GRAVEL DRIVEWAY AND 13 FEET WEST-SOUTHWEST OF CULVERT.  THE
 JV5812'MARK IS SET FLUSH AND THE DISK IS STAMPED APPROX 1957.
 JV5812'
 JV5812'REFERENCE MARK NO. 1 IS 28 FEET EAST-SOUTHEAST OF CEDAR TREE,
 JV5812'23-1/2 FEET NORTHEAST OF INTERSECTION OF DRIVEWAYS AND 12 FEET
 JV5812'NORTH-NORTHEAST OF APPROXIMATE CENTERLINE OF PAVED DRIVEWAY.  THE
 JV5812'MARK IS SET FLUSH AND THE DISK IS STAMPED APPROX NO 1 1957.
 JV5812'
 JV5812'REFERENCE MARK NO. 2 IS 13 FEET SOUTHWEST OF APPROXIMATE
 JV5812'CENTERLINE OF DRIVEWAY AND 3-1/2 FEET SOUTH-SOUTHEAST OF POWERLINE
 JV5812'POLE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED APPROX NO 2
 JV5812'1957.
 JV5812'
 JV5812'TO REACH FROM THE RAILROAD OVERPASS IN ELKRIDGE, GO NORTH ON
 JV5812'U.S. HIGHWAY NO. 1 FOR 0.1 MILE TO SIDE ROAD LEFT.  TURN LEFT AND
 JV5812'GO WESTERLY ON SURFACED ROAD FOR 0.35 MILE TO RAILROAD
 JV5812'OVERPASS.  CONTINUE WESTERLY ON SURFACED ROAD FOR 0.45 MILE TO
 JV5812'SIDE ROAD LEFT JUST AFTER CROSSING BRIDGE.  TURN LEFT AND SOUTH
 JV5812'AND SOUTHWEST UP HILL FOR 0.35 MILE TO FORKS AND STATION ON LEFT
 JV5812'AS DESCRIBED.
 JV5812'
 JV5812'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV5812
 JV5812                          STATION RECOVERY (1958)
 JV5812
 JV5812'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5812'STATION RECOVERED AS DESCRIBED AND ALL MARKS FOUND IN GOOD
 JV5812'CONDITION.  A CHECK WAS MADE ON THE LINE TO STATION RELAY 1957
 JV5812'AND SEVERAL TREE TOPS WERE BLOCKING THE LINE.  THE LINE HAS NOW
 JV5812'BEEN CLEARED AND THE TWO STATIONS ARE INTERVISIBLE FROM THE
 JV5812'GROUND.
 JV5812'
 JV5812'STATION RELAY 1957 MAY BE USED AS AN AZIMUTH MARK.
 JV5812
 JV5812                          STATION RECOVERY (2003)
 JV5812
 JV5812'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5812'STATION, REFERENCE MARKS 1 AND 2 WERE NOT FOUND.  TO REACH FROM THE
 JV5812'RAILROAD OVERPASS IN ELKRIDGE, GO NORTHEAST ON U.S. HIGHWAY 1 FOR 0.1
 JV5812'MILE TO LEVERING ROAD ON THE LEFT.
 JV5812'TURN LEFT AND GO ON LEVERING ROAD FOR 0.35 MILE TO A STONE RAILROAD
 JV5812'OVERPASS.  CONTINUE ON LEVERING ROAD WHICH BECOMES RIVER ROAD FOR 0.45
 JV5812'MILE TO ROCKBURN HILL ROAD JUST AFTER CROSSING A BRIDGE.  TURN LEFT UP
 JV5812'A HILL FOR 0.35 MILE TO A FORK IN THE ROAD WHICH ARE PRIVATE
 JV5812'DRIVEWAYS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7351 ***********************************************************************
 HV7351  DESIGNATION -  AQUASCO
 HV7351  PID         -  HV7351
 HV7351  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7351  COUNTRY     -  US
 HV7351  USGS QUAD   -  BENEDICT (2016)
 HV7351
 HV7351                         *CURRENT SURVEY CONTROL
 HV7351  ______________________________________________________________________
 HV7351* NAD 83(1993) POSITION- 38 34 40.97170(N) 076 43 19.78929(W)   ADJUSTED
 HV7351* NAVD 88 ORTHO HEIGHT -    54.0   (meters)      177.    (feet) VERTCON3
 HV7351  ______________________________________________________________________
 HV7351  GEOID HEIGHT    -        -33.487 (meters)                     GEOID18
 HV7351  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 HV7351  HORZ ORDER      -  FIRST
 HV7351
 HV7351.The horizontal coordinates were established by classical geodetic methods
 HV7351.and adjusted by the National Geodetic Survey in November 1994.
 HV7351
 HV7351.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7351.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7351
 HV7351.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7351.GEOID18 height accuracy estimate available here.
 HV7351
 HV7351.Click photographs - Photos may exist for this station.
 HV7351
 HV7351.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7351
 HV7351. The following values were computed from the NAD 83(1993) position.
 HV7351
 HV7351;                    North         East     Units Scale Factor Converg.
 HV7351;SPC MD       -   101,203.698   424,209.328   MT  0.99996328   +0 10 27.8
 HV7351;SPC MD       -   332,032.47  1,391,760.10   sFT  0.99996328   +0 10 27.8
 HV7351;UTM  18      - 4,271,359.868   349,988.098   MT  0.99987713   -1 04 26.8
 HV7351
 HV7351!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7351!SPC MD       -   0.99999678  x   0.99996328  =   0.99996006
 HV7351!UTM  18      -   0.99999678  x   0.99987713  =   0.99987391
 HV7351
 HV7351:                Primary Azimuth Mark                     Grid Az
 HV7351:SPC MD       -  AQUASCO AZ MK                            268 20 02.3
 HV7351:UTM  18      -  AQUASCO AZ MK                            269 34 56.9
 HV7351
 HV7351_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4998871359(NAD 83)
 HV7351
 HV7351|---------------------------------------------------------------------|
 HV7351| PID    Reference Object                     Distance      Geod. Az  |
 HV7351|                                                           dddmmss.s |
 HV7351| HV7349 CHALK POINT PEPCO MICROWAVE         APPROX. 3.6 KM 1245854.8 |
 HV7351| HV7346 CHALK POINT PEPCO N STACK           APPROX. 5.0 KM 1384642.3 |
 HV7351| CX2047 AQUASCO RM 1                         24.789 METERS 14654     |
 HV7351| CX2046 AQUASCO AZ MK                                      2683030.1 |
 HV7351| HV0977 WO 7                                 18.754 METERS 27524     |
 HV7351|---------------------------------------------------------------------|
 HV7351
 HV7351                          SUPERSEDED SURVEY CONTROL
 HV7351
 HV7351  NAD 83(1991)-  38 34 40.97171(N)    076 43 19.79046(W) AD(       ) 1
 HV7351  NAD 83(1986)-  38 34 40.97053(N)    076 43 19.80509(W) AD(       ) 1
 HV7351  NAD 27      -  38 34 40.53918(N)    076 43 20.93204(W) AD(       ) 1
 HV7351  NGVD 29 (07/19/86)   54.3    (m)          178.     (f) VERT ANG       
 HV7351
 HV7351.Superseded values are not recommended for survey control.
 HV7351
 HV7351.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7351.See file dsdata.pdf to determine how the superseded data were derived.
 HV7351
 HV7351_MARKER: DS = TRIANGULATION STATION DISK
 HV7351_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7351_STAMPING: AQUASCO 1970
 HV7351_MARK LOGO: CGS
 HV7351_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7351+STABILITY: SURFACE MOTION
 HV7351
 HV7351  HISTORY     - Date     Condition        Report By
 HV7351  HISTORY     - 1970     MONUMENTED       NGS
 HV7351
 HV7351                          STATION DESCRIPTION
 HV7351
 HV7351'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7351'THE STATION IS LOCATED AT THE SOUTH EDGE OF THE VILLAGE OF
 HV7351'AQUASCO, ABOUT 1.0 MILE EAST OF THE PRINCE GEORGES-CHARLES COUNTY
 HV7351'LINE, 2.0 MILES WEST-NORTHWEST OF EAGLE HARBOR AND ON THE
 HV7351'PROPERTY OF MR. ROBERT G. STANLEY OF AQUASCO.
 HV7351'
 HV7351'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND
 HV7351'STATE HIGHWAY 382 AT POPLAR HILL, GO SOUTH ON STATE HIGHWAY 381
 HV7351'FOR 2.2 MILES TO THE VILLAGE OF AQUASCO, CONTINUE FOR 1.1 MILE TO
 HV7351'A SIDE ROAD RIGHT, PHILLIPS ROAD, CONTINUE ON STATE HIGHWAY 381
 HV7351'FOR 0.2 MILE TO A SIDE LEFT, EAGLE HARBOR ROAD, TURN LEFT AND GO
 HV7351'EAST ON EAGLE HARBOR ROAD FOR 0.05 MILE TO THE STATION ON THE
 HV7351'LEFT.  TO REACH THE AZIMUTH MARK FROM THE STATION GO WEST ON EAGLE
 HV7351'HARBOR ROAD FOR 0.05 MILE TO STATE HIGHWAY 381, TURN RIGHT AND GO
 HV7351'NORTH ON STATE HIGHWAY 381 FOR 0.05 MILE TO A GRAVELED ROAD LEFT,
 HV7351'JUST PAST THE DRIVEWAY TO A FARM HOUSE, TURN LEFT AND GO WEST ON
 HV7351'GRAVELED ROAD FOR 0.1 MILE TO A DIM TRACK ROAD ON THE LEFT, TURN
 HV7351'LEFT AND GO SOUTHWESTERLY ACROSS FIELD FOR 0.05 MILE TO THE
 HV7351'AZIMUTH MARK ON THE RIGHT NEAR A FENCE LINE IN A LIGHTLY WOODED AREA.
 HV7351'
 HV7351'THE STATION IS A STANDARD DISK, STAMPED AQUASCO 1970, SET IN A 12
 HV7351'INCH ROUND CONCRETE POST THAT PROJECTS ABOUT 2.0 INCHES ABOVE THE
 HV7351'GROUND.  IT IS 76.0 FEET WEST OF A POWERLINE POLE, NUMBERED 417,
 HV7351'32.0 FEET NORTH-NORTHWEST OF THE CENTER OF EAGLE HARBOR ROAD, AND
 HV7351'15.5 FEET SOUTH-SOUTHWEST OF A FENCE LINE.  THE UNDERGROUND MARK
 HV7351'IS 42 INCHES BELOW THE GROUND.
 HV7351'
 HV7351'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED AQUASCO NO 1 1970,
 HV7351'SET IN A ROUND CONCRETE POST THAT PROJECTS ABOUT 2 INCHES ABOVE
 HV7351'THE GROUND.  IT IS 66.0 FEET NORTH OF THE NORTHWEST CORNER OF A
 HV7351'HOUSE, 16.0 FEET SOUTH-SOUTHEAST OF THE CENTER OF EAGLE HARBOR
 HV7351'ROAD, AND 4.0 FEET NORTH OF THE TOP OF THE BANK AND EDGE OF A LAWN.
 HV7351'
 HV7351'WO 17 USGS IS A BRONZE DISK OF THE U.S. GEOLOGICAL SURVEY,
 HV7351'STAMPED WO 17 1933, SET IN A 6 INCH SQUARE CONCRETE POST THAT IS
 HV7351'FLUSH WITH THE GROUND.  IT IS 40.5 FEET SOUTH-SOUTHWEST OF A FENCE
 HV7351'LINE, 20.0 FEET NORTH-NORTHWEST OF THE CENTER OF EAGLE HARBOR
 HV7351'ROAD, 15.7 FEET EAST OF A POWERLINE POLE, NUMBERED 417, AND 1.5
 HV7351'FEET SOUTH-SOUTHEAST OF A METAL WITNESS POST.  IT IS ABOUT 1 FOOT
 HV7351'HIGHER THAN THE STATION.
 HV7351'
 HV7351'AZIMUTH MARK IS A STANDARD DISK, STAMPED AQUASCO 1970, SET IN A 12
 HV7351'INCH ROUND CONCRETE POST THAT PROJECTS ABOUT 4 INCHES ABOVE THE
 HV7351'GROUND.  IT IS 178.0 FEET SOUTH OF A POWERLINE POLE, 172.0 FEET
 HV7351'SOUTH OF A GRAVELED ROAD, AND ABOUT 6.0 FEET EAST OF A FENCE LINE
 HV7351'THROUGH A LIGHTLY WOODED AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1949 ***********************************************************************
 HU1949  DESIGNATION -  AR 1907
 HU1949  PID         -  HU1949
 HU1949  STATE/COUNTY-  MD/DORCHESTER
 HU1949  COUNTRY     -  US
 HU1949  USGS QUAD   -  NANTICOKE (2016)
 HU1949
 HU1949                         *CURRENT SURVEY CONTROL
 HU1949  ______________________________________________________________________
 HU1949* NAD 83(1991) POSITION- 38 19 22.35479(N) 075 55 22.35352(W)   ADJUSTED
 HU1949* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1949  ______________________________________________________________________
 HU1949  GEOID HEIGHT    -        -35.607 (meters)                     GEOID18
 HU1949  LAPLACE CORR    -         -3.03  (seconds)                    DEFLEC18
 HU1949  HORZ ORDER      -  THIRD
 HU1949
 HU1949.The horizontal coordinates were established by classical geodetic methods
 HU1949.and adjusted by the National Geodetic Survey in January 1992.
 HU1949
 HU1949.The orthometric height was scaled from a topographic map.
 HU1949
 HU1949.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1949.GEOID18 height accuracy estimate available here.
 HU1949
 HU1949.Click photographs - Photos may exist for this station.
 HU1949
 HU1949.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1949
 HU1949. The following values were computed from the NAD 83(1991) position.
 HU1949
 HU1949;                    North         East     Units Scale Factor Converg.
 HU1949;SPC MD       -    73,397.849   494,187.604   MT  0.99999610   +0 40 33.7
 HU1949;SPC MD       -   240,806.11  1,621,347.16   sFT  0.99999610   +0 40 33.7
 HU1949;UTM  18      - 4,242,042.692   419,329.680   MT  0.99968014   -0 34 20.3
 HU1949
 HU1949!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1949!SPC MD       -   1.00000563  x   0.99999610  =   1.00000173
 HU1949!UTM  18      -   1.00000563  x   0.99968014  =   0.99968576
 HU1949
 HU1949:                Primary Azimuth Mark                     Grid Az
 HU1949:SPC MD       -  OKAY 1907                                208 12 26.6
 HU1949:UTM  18      -  OKAY 1907                                209 27 20.6
 HU1949
 HU1949_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1932942042(NAD 83)
 HU1949
 HU1949|---------------------------------------------------------------------|
 HU1949| PID    Reference Object                     Distance      Geod. Az  |
 HU1949|                                                           dddmmss.s |
 HU1949| HU1944 BIVALVE CHURCH SPIRE                APPROX. 3.4 KM 1212542.1 |
 HU1949| HU1960 POLE                                APPROX. 2.7 KM 1263843.4 |
 HU1949| HU1947 NANTICOKE CHURCH SPIRE              APPROX. 6.0 KM 1662555.4 |
 HU1949| HU1941 OKAY 1907                           APPROX. 2.5 KM 2085300.3 |
 HU1949|---------------------------------------------------------------------|
 HU1949
 HU1949                          SUPERSEDED SURVEY CONTROL
 HU1949
 HU1949  NAD 83(1986)-  38 19 22.35294(N)    075 55 22.37434(W) AD(       ) 3
 HU1949  NAD 27      -  38 19 21.92100(N)    075 55 23.61400(W) AD(       ) 3
 HU1949  USSD        -  38 19 22.33300(N)    075 55 23.35800(W) AD(       ) 3
 HU1949
 HU1949.Superseded values are not recommended for survey control.
 HU1949
 HU1949.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1949.See file dsdata.pdf to determine how the superseded data were derived.
 HU1949
 HU1949_MARKER: H = DRILL HOLE
 HU1949_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1949_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1949+STABILITY: SURFACE MOTION
 HU1949
 HU1949  HISTORY     - Date     Condition        Report By
 HU1949  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1949  HISTORY     - 1942     GOOD             CGS
 HU1949  HISTORY     - 1950     GOOD             CGS
 HU1949  HISTORY     - 1961     MARK NOT FOUND   CGS
 HU1949
 HU1949                          STATION DESCRIPTION
 HU1949
 HU1949'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1949'STATION IS ON THE WESTERN SHORE OF NANTICOKE RIVER, ABOUT 1-1/2
 HU1949'MILES NW OF BIVALVE WHARF, AND 3/4 MILE N-NE OF ENTRANCE TO
 HU1949'LONGWELL CREEK.  IT IS ON MARSH BETWEEN TWO SMALL CREEKS ABOUT
 HU1949'40 YARDS BACK FROM SHORE, 35 YARDS W-SW OF MOUTH OF ONE CREEK,
 HU1949'AND 45 YARDS NW OF THE MOUTH OF THE OTHER CREEK.  STATION MARK IS
 HU1949'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HU1949'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2
 HU1949'FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HU1949'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HU1949'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HU1949'FOLLOWS--SMOKE PIPE OF CABIN, 1-1/2 MILES, S 29 DEG 23 MIN W.
 HU1949'CHIMNEY OF HOUSE, 1/2 MILE, S 32 DEG 52 MIN W.  CHIMNEY OF
 HU1949'CABIN, 1/2 MILE, N 54 DEG 13 MIN E.  HOUSE WITH SEVERAL GABLES, 3
 HU1949'MILES N 68 DEG 44 MIN E.  CHIMNEY OF HOUSE BEHIND TREES, 2 MILES,
 HU1949'S 70 DEG 51 MIN E.  WINDMILL, 2 MILES, S 54 DEG 31 E.  STACK
 HU1949'OF CANNING HOUSE, 2 MILES, S 53 DEG 19 MIN E.  CHIMNEY OF HOUSE ON
 HU1949'RAGGED POINT, 2-1/4 MILES, S 23 DEG 01 MIN E.  WINDMILL, 3-1/4
 HU1949'MILES, S 20 DEG 37 MIN E.
 HU1949
 HU1949                          STATION RECOVERY (1942)
 HU1949
 HU1949'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1949'THE STATION IS LOCATED ON THE WESTERN SHORE OF THE NANTICOKE
 HU1949'RIVER, ABOUT 1-1/2 MILES NW OF BIVALVE WHARF AND 3/4 MILE NE OF
 HU1949'THE ENTRANCE TO LONGWELLS CREEK, ON THE MARSH BETWEEN TWO SMALL
 HU1949'CREEKS, 7.5 METERS W OF THE HIGH-WATER LINE, 30.0 METERS SW OF
 HU1949'THE SW POINT OF THE MOST NORTHERLY CREEK AND 41 METERS NW OF THE
 HU1949'N POINT OF THE MOST SOUTHERLY CREEK.
 HU1949'
 HU1949'THE STATION IS MARKED BY A 3/4-INCH HOLE IN THE CENTER OF THE
 HU1949'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HU1949'SQUARE CONCRETE POST, PROJECTING 2 INCHES ABOVE THE MARSH
 HU1949'GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK IN
 HU1949'THE TOP OF THE MONUMENT.  THE STATION IS IN GOOD CONDITION.
 HU1949
 HU1949                          STATION RECOVERY (1950)
 HU1949
 HU1949'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HU1949'STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION
 HU1949'AS AMENDED IN 1942 BY W.D.P. IS ADEQUATE.  A SMALL TARGET HAS BEEN
 HU1949'ERECTED ON THE STATION BY THE MARYLAND OYSTER COMMISSION.
 HU1949
 HU1949                          STATION RECOVERY (1961)
 HU1949
 HU1949'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HU1949'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  A 2 INCH IRON
 HU1949'PIPE SET IN CEMENT AND PROJECTING ABOUT 2 FT. AND A SIGNAL WERE
 HU1949'FOUND AT THE APPROXIMATE LOCATION.  IT IS BELIEVED THAT THE
 HU1949'STATION HAS BEEN DESTROYED BY EROSION OF THE SHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0152 ***********************************************************************
 JV0152  DESIGNATION -  ARARAT
 JV0152  PID         -  JV0152
 JV0152  STATE/COUNTY-  MD/CECIL
 JV0152  COUNTRY     -  US
 JV0152  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0152
 JV0152                         *CURRENT SURVEY CONTROL
 JV0152  ______________________________________________________________________
 JV0152* NAD 83(1991) POSITION- 39 35 07.51758(N) 076 05 49.20622(W)   ADJUSTED
 JV0152* NAVD 88 ORTHO HEIGHT -    64.846 (meters)      212.75  (feet) ADJUSTED
 JV0152  ______________________________________________________________________
 JV0152  GEOID HEIGHT    -        -33.070 (meters)                     GEOID18
 JV0152  LAPLACE CORR    -         -2.06  (seconds)                    DEFLEC18
 JV0152  DYNAMIC HEIGHT  -         64.813 (meters)      212.64  (feet) COMP
 JV0152  MODELED GRAVITY -    980,130.0   (mgal)                       NAVD 88
 JV0152
 JV0152  HORZ ORDER      -  SECOND
 JV0152  VERT ORDER      -  SECOND    CLASS 0
 JV0152
 JV0152.The horizontal coordinates were established by classical geodetic methods
 JV0152.and adjusted by the National Geodetic Survey in January 1992.
 JV0152
 JV0152.The orthometric height was determined by differential leveling and
 JV0152.adjusted by the NATIONAL GEODETIC SURVEY
 JV0152.in June 1991.
 JV0152
 JV0152.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0152.GEOID18 height accuracy estimate available here.
 JV0152
 JV0152.Click photographs - Photos may exist for this station.
 JV0152
 JV0152.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0152
 JV0152.The dynamic height is computed by dividing the NAVD 88
 JV0152.geopotential number by the normal gravity value computed on the
 JV0152.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0152.degrees latitude (g = 980.6199 gals.).
 JV0152
 JV0152.The modeled gravity was interpolated from observed gravity values.
 JV0152
 JV0152. The following values were computed from the NAD 83(1991) position.
 JV0152
 JV0152;                    North         East     Units Scale Factor Converg.
 JV0152;SPC MD       -   213,382.759   477,575.598   MT  1.00002650   +0 34 00.3
 JV0152;SPC MD       -   700,073.27  1,566,845.94   sFT  1.00002650   +0 34 00.3
 JV0152;UTM  18      - 4,382,319.428   405,795.338   MT  0.99970926   -0 41 56.7
 JV0152
 JV0152!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0152!SPC MD       -   0.99999501  x   1.00002650  =   1.00002151
 JV0152!UTM  18      -   0.99999501  x   0.99970926  =   0.99970428
 JV0152
 JV0152:                Primary Azimuth Mark                     Grid Az
 JV0152:SPC MD       -  ARARAT AZ MK                             242 02 54.7
 JV0152:UTM  18      -  ARARAT AZ MK                             243 18 51.7
 JV0152
 JV0152_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0579582319(NAD 83)
 JV0152
 JV0152|---------------------------------------------------------------------|
 JV0152| PID    Reference Object                     Distance      Geod. Az  |
 JV0152|                                                           dddmmss.s |
 JV0152| JV0153 ARARAT RM 1                           8.262 METERS 07609     |
 JV0152| JV0154 ARARAT RM 2                          15.256 METERS 17037     |
 JV0152| CA9889 ARARAT AZ MK                                       2423655.0 |
 JV0152|---------------------------------------------------------------------|
 JV0152
 JV0152                          SUPERSEDED SURVEY CONTROL
 JV0152
 JV0152  NAD 83(1986)-  39 35 07.51091(N)    076 05 49.21161(W) AD(       ) 2
 JV0152  NAD 27      -  39 35 07.12150(N)    076 05 50.39290(W) AD(       ) 2
 JV0152  NGVD 29              65.14   (m)          213.7    (f) LEVELING    3  
 JV0152  NGVD 29 (11/26/84)   65.108  (m)          213.61   (f) ADJUSTED    2 0
 JV0152
 JV0152.Superseded values are not recommended for survey control.
 JV0152
 JV0152.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0152.See file dsdata.pdf to determine how the superseded data were derived.
 JV0152
 JV0152_MARKER: DE = TRAVERSE STATION DISK
 JV0152_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0152_STAMPING: ARARAT 1958
 JV0152_MARK LOGO: CGS
 JV0152_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0152+STABILITY: SURFACE MOTION
 JV0152
 JV0152  HISTORY     - Date     Condition        Report By
 JV0152  HISTORY     - 1958     MONUMENTED       CGS
 JV0152  HISTORY     - 1959     GOOD             CGS
 JV0152  HISTORY     - 1988     GOOD             LOCSUR
 JV0152
 JV0152                          STATION DESCRIPTION
 JV0152
 JV0152'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0152'THE STATION IS ABOUT 2 MILES NORTH-NORTHWEST OF PERRYVILLE, ABOUT
 JV0152'2 MILES NORTH-NORTHEAST OF HAVRE DE GRACE AND IS ON THE EAST
 JV0152'BANK OF THE SUSQUEHANNA RIVER.  IT IS 32 FEET NORTHWEST OF A
 JV0152'TRIANGLE-BLAZED TREE, 13 FEET EAST OF A TRIANGLE-BLAZED TREE
 JV0152'AND 1-1/4 FEET SOUTH OF WITNESS POST.  THE MARK IS A STANDARD
 JV0152'TRAVERSE STATION DISK SET IN A 12 IN X 12 IN CONCRETE POST
 JV0152'PROJECTING 6 INCHES AND THE DISK IS STAMPED ARARAT 1958.
 JV0152'
 JV0152'REFERENCE MARK NO. 1 IS 23 FEET NORTH OF A TRIANGLE-BLAZED
 JV0152'TREE AND 36-1/2 FEET NORTHEAST OF A TRIANGLE-BLAZED TREE.  THE
 JV0152'MARK IS A STANDARD REFERENCE MARK DISK SET IN TOP OF A 12 X 12 INCH
 JV0152'CONCRETE POST PROJECTING ABOUT 6 INCHES AND THE DISK IS STAMPED
 JV0152'ARARAT NO 1 1958.
 JV0152'
 JV0152'REFERENCE MARK NO. 2 IS 37 FEET SOUTHWEST OF A TRIANGLE-BLAZED
 JV0152'TREE AND 37 FEET SOUTH-SOUTHEAST OF A TRIANGLE-BLAZED TREE.  THE
 JV0152'MARK IS A STANDARD REFERENCE MARK DISK SET IN A 12 X 12 INCH
 JV0152'CONCRETE POST PROJECTING ABOUT 6 INCHES AND THE DISK IS STAMPED
 JV0152'ARARAT NO 2 1958.
 JV0152'
 JV0152'AZIMUTH MARK IS 16 FEET EAST OF CENTER OF ROAD AND 1-1/2 FEET
 JV0152'SOUTH OF WITNESS POST.  THE MARK IS A STANDARD AZIMUTH MARK DISK
 JV0152'SET IN TOP OF A 12 X 12 INCH CONCRETE POST PROJECTING ABOUT 2
 JV0152'INCHES AND THE DISK IS STAMPED EARL 1958.
 JV0152'
 JV0152'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV0152'STATE HIGHWAY 222 IN PERRYVILLE, GO NORTH ON STATE HIGHWAY 222 FOR
 JV0152'2.4 MILES TO FORKS, KEEP LEFT FORK AND CONTINUE FOR 1.2 MILES TO
 JV0152'SIDE ROAD LEFT AND SIGN MT. ARARAT FARMS.  TURN LEFT AND GO
 JV0152'0.15 MILE TO CROSSROADS, TURN LEFT AND GO SOUTHERLY FOR 0.3 MILE
 JV0152'TO SIDE ROAD RIGHT AND SIGN F.D. BROWN JR., TURN RIGHT AND GO
 JV0152'WEST FOR 0.4 MILE TO LARGE HOUSE ON RIGHT.  CONTINUE STRAIGHT
 JV0152'AHEAD FOR 0.1 MILE TO GATE ON SOUTH SIDE OF BARN, PASS THROUGH
 JV0152'GATE AND CONTINUE STRAIGHT AHEAD FOR 0.05 MILE TO GATE, TURN
 JV0152'RIGHT PASSING THROUGH GATE AND GO NORTH FOR 0.05 MILE TO ANOTHER
 JV0152'GATE, PASS THROUGH GATE AND CONTINUE NORTHERLY ALONG WEST SIDE
 JV0152'OF FENCE LINE FOR 0.2 MILE TO GATE AT EDGE OF WOODS.  PASS
 JV0152'THROUGH GATE AND GO NORTHWEST ON DIM WOODS ROAD FOR 0.15 MILE
 JV0152'TO THE STATION AS DESCRIBED.
 JV0152'
 JV0152'THE AZIMUTH MARK FOR TRIANGULATION STATION EARL WAS USED AS AZIMUTH
 JV0152'MARK FOR THIS STATION.  SEE DESCRIPTION TO STATION EARL.
 JV0152'
 JV0152'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV0152
 JV0152                          STATION RECOVERY (1959)
 JV0152
 JV0152'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV0152'4.1 MI NW FROM PERRYVILLE.
 JV0152'ABOUT 2.7 MILES NORTHWEST ALONG U.S. HIGHWAY 222 FROM ITS
 JV0152'INTERSECTION WITH U.S. HIGHWAY 40 AT PERRYVILLE, THENCE 0.2
 JV0152'MILE SOUTH ALONG MT. ARARAT FARM ROAD, THENCE 0.3 MILE SOUTHEAST
 JV0152'ALONG A GRAVELED ROAD, THENCE 0.5 MILE WEST ALONG A PRIVATE
 JV0152'ROAD TO F.D. BROWN RESIDENCE, THENCE 0.4 MILE NORTHWEST ALONG
 JV0152'FENCE LINE AND WOODS ROAD, ON TOP OF A HIGH BANK OVERLOOKING
 JV0152'THE SUSQUEHANNA RIVER, NEAR THE TOP OF AN ABANDONED QUARRY, 32
 JV0152'FEET NORTHWEST OF A TRIANGLE-BLAZED TREE, 1 1/2 FEET SOUTH OF A
 JV0152'METAL WITNESS POST, SET IN THE TOP OF A CONCRETE POST PROJECTING 4
 JV0152'INCHES ABOVE THE GROUND.
 JV0152
 JV0152                          STATION RECOVERY (1988)
 JV0152
 JV0152'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1988 (LLW)
 JV0152'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0153 ***********************************************************************
 JV0153  DESIGNATION -  ARARAT RM 1
 JV0153  PID         -  JV0153
 JV0153  STATE/COUNTY-  MD/CECIL
 JV0153  COUNTRY     -  US
 JV0153  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0153
 JV0153                         *CURRENT SURVEY CONTROL
 JV0153  ______________________________________________________________________
 JV0153* NAD 83(1986) POSITION- 39 35 07.58   (N) 076 05 48.87   (W)   HD_HELD1
 JV0153* NAVD 88 ORTHO HEIGHT -    65.152 (meters)      213.75  (feet) ADJUSTED
 JV0153  ______________________________________________________________________
 JV0153  GEOID HEIGHT    -        -33.070 (meters)                     GEOID18
 JV0153  DYNAMIC HEIGHT  -         65.119 (meters)      213.64  (feet) COMP
 JV0153  MODELED GRAVITY -    980,130.0   (mgal)                       NAVD 88
 JV0153
 JV0153  VERT ORDER      -  SECOND    CLASS 0
 JV0153
 JV0153.The horizontal coordinates were determined by differentially corrected
 JV0153.hand held GPS observations or other comparable positioning techniques
 JV0153.and have an estimated accuracy of +/- 3 meters.
 JV0153
 JV0153.The orthometric height was determined by differential leveling and
 JV0153.adjusted by the NATIONAL GEODETIC SURVEY
 JV0153.in June 1991.
 JV0153
 JV0153.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0153.GEOID18 height accuracy estimate available here.
 JV0153
 JV0153.Click photographs - Photos may exist for this station.
 JV0153
 JV0153.The dynamic height is computed by dividing the NAVD 88
 JV0153.geopotential number by the normal gravity value computed on the
 JV0153.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0153.degrees latitude (g = 980.6199 gals.).
 JV0153
 JV0153.The modeled gravity was interpolated from observed gravity values.
 JV0153
 JV0153;                    North         East    Units  Estimated Accuracy
 JV0153;SPC MD       -   213,384.8     477,583.6     MT  (+/- 3 meters HH1 GPS) 
 JV0153
 JV0153_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0580382321(NAD 83)
 JV0153
 JV0153                          SUPERSEDED SURVEY CONTROL
 JV0153
 JV0153  NGVD 29 (11/26/84)   65.415  (m)          214.62   (f) ADJUSTED    2 0
 JV0153
 JV0153.Superseded values are not recommended for survey control.
 JV0153
 JV0153.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0153.See file dsdata.pdf to determine how the superseded data were derived.
 JV0153
 JV0153_MARKER: DR = REFERENCE MARK DISK
 JV0153_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0153_STAMPING: ARARAT NO 1 1958
 JV0153_MARK LOGO: CGS
 JV0153_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0153+STABILITY: SURFACE MOTION
 JV0153
 JV0153  HISTORY     - Date     Condition        Report By
 JV0153  HISTORY     - 1958     MONUMENTED       CGS
 JV0153  HISTORY     - 1959     GOOD             CGS
 JV0153
 JV0153                          STATION DESCRIPTION
 JV0153
 JV0153'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0153'4.1 MI NW FROM PERRYVILLE.
 JV0153'ABOUT 2.7 MILES NORTHWEST ALONG U.S. HIGHWAY 222 FROM THE
 JV0153'INTERSECTION OF U.S. HIGHWAY 40 AT PERRYVILLE, THENCE 0.2 MILE
 JV0153'SOUTH ALONG MT. ARARAT FARM ROAD, THENCE 0.3 MILE SOUTHEAST ALONG
 JV0153'A GRAVELED ROAD, THENCE 0.5 MILE WEST ALONG A PRIVATE ROAD TO
 JV0153'F.D. BROWN RESIDENCE, THENCE 0.4 MILE NORTHWEST ALONG FENCE
 JV0153'LINE AND WOODS ROAD, 27.1 FEET NORTHEAST OF THE STATION, SET
 JV0153'IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES ABOVE THE
 JV0153'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0154 ***********************************************************************
 JV0154  DESIGNATION -  ARARAT RM 2
 JV0154  PID         -  JV0154
 JV0154  STATE/COUNTY-  MD/CECIL
 JV0154  COUNTRY     -  US
 JV0154  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0154
 JV0154                         *CURRENT SURVEY CONTROL
 JV0154  ______________________________________________________________________
 JV0154* NAD 83(1986) POSITION- 39 35 07.03   (N) 076 05 49.10   (W)   HD_HELD1
 JV0154* NAVD 88 ORTHO HEIGHT -    64.208 (meters)      210.66  (feet) ADJUSTED
 JV0154  ______________________________________________________________________
 JV0154  GEOID HEIGHT    -        -33.071 (meters)                     GEOID18
 JV0154  DYNAMIC HEIGHT  -         64.176 (meters)      210.55  (feet) COMP
 JV0154  MODELED GRAVITY -    980,130.0   (mgal)                       NAVD 88
 JV0154
 JV0154  VERT ORDER      -  SECOND    CLASS 0
 JV0154
 JV0154.The horizontal coordinates were determined by differentially corrected
 JV0154.hand held GPS observations or other comparable positioning techniques
 JV0154.and have an estimated accuracy of +/- 3 meters.
 JV0154
 JV0154.The orthometric height was determined by differential leveling and
 JV0154.adjusted by the NATIONAL GEODETIC SURVEY
 JV0154.in June 1991.
 JV0154
 JV0154.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0154.GEOID18 height accuracy estimate available here.
 JV0154
 JV0154.Click photographs - Photos may exist for this station.
 JV0154
 JV0154.The dynamic height is computed by dividing the NAVD 88
 JV0154.geopotential number by the normal gravity value computed on the
 JV0154.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0154.degrees latitude (g = 980.6199 gals.).
 JV0154
 JV0154.The modeled gravity was interpolated from observed gravity values.
 JV0154
 JV0154;                    North         East    Units  Estimated Accuracy
 JV0154;SPC MD       -   213,367.7     477,578.3     MT  (+/- 3 meters HH1 GPS) 
 JV0154
 JV0154_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0579782304(NAD 83)
 JV0154
 JV0154                          SUPERSEDED SURVEY CONTROL
 JV0154
 JV0154  NGVD 29 (11/26/84)   64.471  (m)          211.52   (f) ADJUSTED    2 0
 JV0154
 JV0154.Superseded values are not recommended for survey control.
 JV0154
 JV0154.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0154.See file dsdata.pdf to determine how the superseded data were derived.
 JV0154
 JV0154_MARKER: DR = REFERENCE MARK DISK
 JV0154_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0154_STAMPING: ARARAT NO 2 1958
 JV0154_MARK LOGO: CGS
 JV0154_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0154+STABILITY: SURFACE MOTION
 JV0154
 JV0154  HISTORY     - Date     Condition        Report By
 JV0154  HISTORY     - 1958     MONUMENTED       CGS
 JV0154  HISTORY     - 1959     GOOD             CGS
 JV0154
 JV0154                          STATION DESCRIPTION
 JV0154
 JV0154'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0154'4.1 MI NW FROM PERRYVILLE.
 JV0154'ABOUT 2.7 MILES NORTHWEST ALONG U.S. HIGHWAY 222 FROM THE
 JV0154'INTERSECTION OF U.S. HIGHWAY 40 AT PERRYVILLE, THENCE 0.2 MILE
 JV0154'SOUTH ALONG THE MT. ARARAT FARM ROAD, THENCE 0.3 MILE SOUTHEAST
 JV0154'ALONG A GRAVEL ROAD, THENCE 0.5 MILE WEST ALONG A PRIVATE ROAD TO
 JV0154'F.D. BROWN RESIDENCE, THENCE 0.4 MILE NORTHWEST ALONG FENCE
 JV0154'LINE AND WOODS ROAD, 50.1 FEET SOUTHEAST OF THE STATION, SET
 JV0154'IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES ABOVE THE
 JV0154'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1623 ***********************************************************************
 JU1623  DESIGNATION -  ARC RESET
 JU1623  PID         -  JU1623
 JU1623  STATE/COUNTY-  MD/CECIL
 JU1623  COUNTRY     -  US
 JU1623  USGS QUAD   -  NEWARK WEST (2016)
 JU1623
 JU1623                         *CURRENT SURVEY CONTROL
 JU1623  ______________________________________________________________________
 JU1623* NAD 83(1991) POSITION- 39 39 08.84404(N) 075 47 20.92002(W)   ADJUSTED
 JU1623* NAVD 88 ORTHO HEIGHT -    42.87  (meters)      140.6   (feet) RESET
 JU1623  ______________________________________________________________________
 JU1623  GEOID HEIGHT    -        -33.051 (meters)                     GEOID18
 JU1623  LAPLACE CORR    -          1.52  (seconds)                    DEFLEC18
 JU1623  HORZ ORDER      -  SECOND
 JU1623  VERT ORDER      -  THIRD
 JU1623
 JU1623.The horizontal coordinates were established by classical geodetic methods
 JU1623.and adjusted by the National Geodetic Survey in January 1992.
 JU1623
 JU1623.The orthometric height was computed from unverified reset data.
 JU1623
 JU1623.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1623.GEOID18 height accuracy estimate available here.
 JU1623
 JU1623.Click photographs - Photos may exist for this station.
 JU1623
 JU1623.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU1623
 JU1623. The following values were computed from the NAD 83(1991) position.
 JU1623
 JU1623;                    North         East     Units Scale Factor Converg.
 JU1623;SPC MD       -   221,131.294   503,923.207   MT  1.00004169   +0 45 35.9
 JU1623;SPC MD       -   725,494.92  1,653,288.05   sFT  1.00004169   +0 45 35.9
 JU1623;SPC PA S     -    37,302.540   768,286.381   MT  1.00005578   +1 16 19.9
 JU1623;SPC PA S     -   122,383.42  2,520,619.57   sFT  1.00005578   +1 16 19.9
 JU1623;UTM  18      - 4,389,481.996   432,298.208   MT  0.99965643   -0 30 12.9
 JU1623
 JU1623!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU1623!SPC MD       -   0.99999846  x   1.00004169  =   1.00004015
 JU1623!SPC PA S     -   0.99999846  x   1.00005578  =   1.00005424
 JU1623!UTM  18      -   0.99999846  x   0.99965643  =   0.99965489
 JU1623
 JU1623:                Primary Azimuth Mark                     Grid Az
 JU1623:SPC MD       -  NEWARK E I DUPONT STINE LAB TK           014 31 02.3
 JU1623:SPC PA S     -  NEWARK E I DUPONT STINE LAB TK           014 00 18.3
 JU1623:UTM  18      -  NEWARK E I DUPONT STINE LAB TK           015 46 51.1
 JU1623
 JU1623_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3229889481(NAD 83)
 JU1623
 JU1623|---------------------------------------------------------------------|
 JU1623| PID    Reference Object                     Distance      Geod. Az  |
 JU1623|                                                           dddmmss.s |
 JU1623| JU3823 BOUNDARY ARC STONE 1 DE MD          198.042 METERS 00618     |
 JU1623| JU3831 NEWARK E I DUPONT STINE LAB TK      APPROX. 1.0 KM 0151638.2 |
 JU1623| JU1621 ARC RM 1                              8.200 METERS 07547     |
 JU1623| JU2488 ARC RM 3                             15.459 METERS 13041     |
 JU1623| JU3840 BOUNDARY MON 82 TANGENT STONE       369.442 METERS 17244     |
 JU1623| JU2489 ARC RM 4                              7.721 METERS 21353     |
 JU1623| JU3842 LINE RESET                          100.553 METERS 26906     |
 JU1623| JU3843 ARC 1958 TP1                         62.022 METERS 29537     |
 JU1623| JU1620 ARC RM 2                              8.837 METERS 33736     |
 JU1623|---------------------------------------------------------------------|
 JU1623
 JU1623                          SUPERSEDED SURVEY CONTROL
 JU1623
 JU1623  NAD 83(1986)-  39 39 08.83834(N)    075 47 20.92657(W) AD(       ) 2
 JU1623  NAD 27      -  39 39 08.44380(N)    075 47 22.16350(W) AD(       ) 2
 JU1623  NGVD 29 (??/??/??)   43.21   (m)          141.8    (f) RESET       3  
 JU1623  NGVD 29              43.21   (m)          141.8    (f) LEVELING    3  
 JU1623  NGVD 29              43.20   (m)          141.7    (f) LEVELING    3  
 JU1623
 JU1623.Superseded values are not recommended for survey control.
 JU1623
 JU1623.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1623.See file dsdata.pdf to determine how the superseded data were derived.
 JU1623
 JU1623_MARKER: DS = TRIANGULATION STATION DISK
 JU1623_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1623_STAMPING: ARC 1961
 JU1623_MARK LOGO: CGS
 JU1623_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU1623_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1623+STABILITY: SURFACE MOTION
 JU1623_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1623+SATELLITE: SATELLITE OBSERVATIONS - October 25, 1984
 JU1623
 JU1623  HISTORY     - Date     Condition        Report By
 JU1623  HISTORY     - 1961     MONUMENTED       CGS
 JU1623  HISTORY     - 1961     SEE DESCRIPTION  CGS
 JU1623  HISTORY     - 1961     GOOD             CGS
 JU1623  HISTORY     - 1971     GOOD             NGS
 JU1623  HISTORY     - 1977     GOOD             NGS
 JU1623  HISTORY     - 1977     GOOD             NGS
 JU1623  HISTORY     - 1984     GOOD             NGS
 JU1623  HISTORY     - 19841025 GOOD             NGS
 JU1623
 JU1623                          STATION DESCRIPTION
 JU1623
 JU1623'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (JCE)
 JU1623'STATION IS LOCATED ABOUT 3 MILES NORTH NORTHEAST OF ELKTON AND
 JU1623'2-1/2 MILES SOUTHWEST OF NEWARK, DELAWARE AND AT THE
 JU1623'DELAWARE-MARYLAND STATE LINE.  STATION IS 51 FEET NORTH OF
 JU1623'UTILITY POLE, 15 FEET EAST OF THE CENTER OF DRIVEWAY, 2 FEET
 JU1623'WEST OF WITNESS POST AND 1 FOOT EAST OF FENCELINE.  THE MARK
 JU1623'PROJECTS ABOUT 6 INCHES AND THE DISK IS STAMPED ARC 1958.
 JU1623'
 JU1623'REFERENCE MARK NO. 1 IS 34 FEET EAST OF THE CENTER OF
 JU1623'DRIVEWAY AND 2.5 FEET NORTHWEST OF WITNESS POST.  THE MARK IS
 JU1623'FLUSH WITH THE GROUND AND THE DISK IS STAMPED ARC NO 1 1958.
 JU1623'
 JU1623'REFERENCE MARK NO. 2 IS 32 FEET EAST OF CENTER OF DRIVEWAY, 19.5
 JU1623'FEET EAST OF FENCELINE AND 1.5 FEET SOUTH OF WITNESS POST.  THE
 JU1623'MARK IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED ARC NO 2
 JU1623'1958.
 JU1623'
 JU1623'A TRAVERSE CONNECTION WAS MADE TO DELAWARE-MARYLAND STATE
 JU1623'BOUNDARY MARKER WHICH IS A GRANITE STONE THAT PROJECTS ABOUT 18
 JU1623'INCHES.  THE MARKER IS 24 FEET WEST OF UTILITY POLE, 16.5 FEET
 JU1623'SOUTH OF THE CENTERLINE OF ROAD, 14 FEET WEST OF HISTORIC MARKER
 JU1623'AND 2.5 FEET NORTH OF FENCELINE.
 JU1623'
 JU1623'TO REACH STATION FROM THE POST OFFICE IN NEWARK GO WEST ON MAIN
 JU1623'STREET FOR 0.4 MILE TO FORKS AND RAILROAD TRACKS.  TAKE LEFT
 JU1623'FORK AND GO SOUTHWESTERLY ON ELKTON ROAD FOR 2.4 MILES TO THE
 JU1623'STATE LINE.  CONTINUED STRAIGHT AHEAD FOR 0.05 MILE TO DRIVEWAY
 JU1623'ON LEFT.  TURN LEFT ON DRIVEWAY AND GO 0.1 MILE TO THE STATION
 JU1623'ON THE LEFT AS DESCRIBED.
 JU1623'
 JU1623'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JU1623
 JU1623                          STATION RECOVERY (1961)
 JU1623
 JU1623'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU1623'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 JU1623'CONDITION.  THE REFERENCE MARKS ARE NOW ABOUT 5 INCHES BELOW THE
 JU1623'GROUND SURFACE.  THE STATION MARK WAS LOWERED 0.246 METERS.  IT IS
 JU1623'NOW FLUSH WITH THE GROUND SURFACE.
 JU1623'
 JU1623'THE DESCRIPTION IS ADEQUATE.
 JU1623
 JU1623                          STATION RECOVERY (1961)
 JU1623
 JU1623'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961
 JU1623'3.2 MI NE FROM ELKTON.
 JU1623'3.2 MILES NORTHEAST ALONG STATE HIGHWAY 279 FROM THE HIGH SCHOOL
 JU1623'AT ELKTON, THENCE 0.05 MILE SOUTH ALONG A PRIVATE DRIVEWAY, NEAR
 JU1623'THE DELAWARE-MARYLAND STATE LINE, 15 FEET EAST OF THE CENTERLINE
 JU1623'OF THE DRIVEWAY, 50 FEET NORTH OF A POWER LINE POLE, 1 FOOT EAST
 JU1623'OF A NORTH-SOUTH FENCE LINE, SET IN THE TOP OF A CONCRETE POST
 JU1623'PROJECTING 4 INCHES ABOVE THE GROUND AND ABOUT 2 FEET ABOVE THE
 JU1623'LEVEL OF THE DRIVEWAY.  NOTE-- STATION MAY BE REACHED BY GOING
 JU1623'NORTH 0.4 MILE ALONG A GRAVEL ROAD FROM THE PENNSYLVANIA RAILROAD
 JU1623'STATION AT IRON HILL, THENCE 0.2 MILE NORTHEAST ALONG STATE
 JU1623'HIGHWAY 279 TO DRIVEWAY ON RIGHT AS DESCRIBED ABOVE.  NOTE--
 JU1623'TRIANGULATION STATION ARC 1958 WAS LOWERED AT THE PROPERTY OWNERS
 JU1623'REQUEST AND SHOULD BE NOTED IN ALL DATA THAT THE ELEVATION HAS
 JU1623'CHANGED.
 JU1623
 JU1623                          STATION RECOVERY (1971)
 JU1623
 JU1623'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JU1623'RECOVERED IN GOOD CONDITION.
 JU1623
 JU1623                          STATION RECOVERY (1977)
 JU1623
 JU1623'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 JU1623'THE STATION MARK WAS RECOVERED AND FOUND IN GOOD CONDITION.  BOTH
 JU1623'REFERENCE MARKS WERE DESTROYED BY THE CONSTRUCTION OF MR. MC INTIRES
 JU1623'HOUSE.  ARC STONE NUMBER 1 1958 IS NO LONGER VISIBLE FROM THE
 JU1623'GROUND.  TWO NEW REFERENCE MARKS WERE SET AT THIS DATE.
 JU1623'
 JU1623'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JU1623'
 JU1623'THE STATION IS LOCATED 22 MILES NORTHEAST OF ABERDEEN, 3 MILES
 JU1623'NORTHEAST OF ELKTON, 2-1/2 MILES SOUTHWEST OF NEWARK, DELAWARE,
 JU1623'AND ON PROPERTY OWNED BY MR. C. H. MC INTIRE, AND MR. MC INTIRE
 JU1623'LIVES IN A HOUSE WHICH IS NEAR THE STATION.
 JU1623'
 JU1623'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 95 AND
 JU1623'STATE HIGHWAY 279 WHICH IS 3 MILES NORTHEAST OF ELKTON, GO
 JU1623'NORTHEAST ON STATE HIGHWAY 279 FOR 1.0 MILE TO LINE RESET 1958
 JU1623'MBCS ON THE RIGHT.  CONTINUE NORTHEAST ON STATE HIGHWAY 279 FOR
 JU1623'0.05 MILES TO A FARM ROAD ON THE RIGHT.  TURN RIGHT, GO
 JU1623'SOUTHEAST ON THE FARM ROAD FOR 0.05 MILE TO THE STATION ON THE
 JU1623'LEFT.
 JU1623'
 JU1623'THE STATION MARK IS A STANDARD DISK STAMPED ARC 1958, SET IN
 JU1623'THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH
 JU1623'THE SURFACE.  IT IS 88 FEET SOUTHEAST OF A POWERLINE POLE
 JU1623'NUMBERED C AND P 1, 48 FEET EAST OF A 12-INCH MAPLE TREE, 16.5
 JU1623'FEET SOUTHWEST OF THE MOST WESTERLY ENTRANCE TO MR. MC INTIRES
 JU1623'HOUSE, AND 15 FEET NORTHEAST OF THE CENTER OF THE FARM ROAD.
 JU1623'(NOTE 1B 7A)
 JU1623'
 JU1623'REFERENCE MARK THREE IS A STANDARD DISK STAMPED ARC 1958 NO 3 1977
 JU1623'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JU1623'FLUSH WITH THE SURFACE.  IT IS 35.8 FEET SOUTH OF THE MOST
 JU1623'SOUTH CORNER OF THE HOUSE, 7 FEET NORTHEAST OF THE CENTER OF THE
 JU1623'FARM ROAD, AND 2.5 FEET WEST OF A POWERLINE POLE.  (NOTE 11B)
 JU1623'
 JU1623'REFERENCE MARK FOUR IS A STANDARD DISK STAMPED ARC 1858 NO 4 1977
 JU1623'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JU1623'FLUSH WITH THE SURFACE.  IT IS 40.7 FEET SOUTHWEST OF THE MOST
 JU1623'WEST ENTRANCE TO THE HOUSE, 34.6 FEET SOUTHEAST OF THE 12-INCH
 JU1623'MAPLE TREE, AND 10 FEET SOUTHWEST OF THE CENTER OF THE FARM
 JU1623'ROAD.  (NOTE 11B)
 JU1623'
 JU1623'LINE RESET 1958 MBCS IS A MARYLAND BUREAU OF CONTROL SURVEY DISK
 JU1623'STAMPED LINE RESET 1958, SET IN THE TOP OF A 6-INCH ROUND
 JU1623'CONCRETE MONUMENT WHICH PROJECTS 8-INCHES.  IT IS 64 FEET
 JU1623'EAST-NORTHEAST OF A POWERLINE POLE NUMBERED NMPC07, 40 FEET
 JU1623'SOUTHEAST OF THE CENTER OF STATE HIGHWAY 279 AND 1 FOOT NORTH OF
 JU1623'A WITNESS POST.
 JU1623'
 JU1623'TRIANGULATION STATION TANGENT 1958 MAY BE USED AS AN AZIMUTH
 JU1623'MARK FOR THIS STATION, SEE DESCRIPTION THEREOF.
 JU1623'
 JU1623'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU1623'2-1/2 MILES SOUTHWEST OF NEWARK, DEL.
 JU1623
 JU1623                          STATION RECOVERY (1977)
 JU1623
 JU1623'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 JU1623'LOCATED 1.05 MILES NE ALONG STATE HIGHWAY 279 FROM ITS JUNCTION WITH
 JU1623'INTERSTATE HIGHWAY 95, THENCE 0.05 MILE SE ALONG A FARM ROAD AT THE
 JU1623'RESIDENCE OF MR. MCNTIRE, NO. 7 FEET SW OF THE MOST W ENTRANCE TO THE
 JU1623'HOUSE, 34.6 FEET SE OF A 12-INCH MAPLE TREE AND 10 FEET SW OF THE
 JU1623'CENTER OF THE FARM ROAD.
 JU1623
 JU1623                          STATION RECOVERY (1984)
 JU1623
 JU1623'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 JU1623'RECOVERED IN GOOD CONDITION.
 JU1623
 JU1623                          STATION RECOVERY (1984)
 JU1623
 JU1623'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 JU1623'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JU1623'AS DESCRIBED IN THE MOST RECENT INFORMATION AVAILABLE WITH ONE ERROR.
 JU1623'IT LOOKS LIKE A TYPING ERROR WAS MADE WHEN THE DISTANCE BETWEEN THE
 JU1623'REFERENCE MARKS WAS STATED.  THE FEET TO METERS CONVERSION FAILED TO
 JU1623'CHECK BY 0.087 METERS.  THE DECLAIRED DISTANCE IN FEET WAS FOUND TO BE
 JU1623'THE CORRECT DISTANCE AND THE METERS WERE IN ERROR.  NO OTHER CHANGES
 JU1623'WERE NOTED AT THIS STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1620 ***********************************************************************
 JU1620  DESIGNATION -  ARC RM 2
 JU1620  PID         -  JU1620
 JU1620  STATE/COUNTY-  MD/CECIL
 JU1620  COUNTRY     -  US
 JU1620  USGS QUAD   -  NEWARK WEST (2016)
 JU1620
 JU1620                         *CURRENT SURVEY CONTROL
 JU1620  ______________________________________________________________________
 JU1620* NAD 83(1986) POSITION- 39 39 09.11   (N) 075 47 21.06   (W)   HD_HELD1
 JU1620* NAVD 88 ORTHO HEIGHT -    42.769 (meters)      140.32  (feet) ADJUSTED
 JU1620  ______________________________________________________________________
 JU1620  GEOID HEIGHT    -        -33.051 (meters)                     GEOID18
 JU1620  DYNAMIC HEIGHT  -         42.749 (meters)      140.25  (feet) COMP
 JU1620  MODELED GRAVITY -    980,150.8   (mgal)                       NAVD 88
 JU1620
 JU1620  VERT ORDER      -  SECOND    CLASS 0
 JU1620
 JU1620.The horizontal coordinates were determined by differentially corrected
 JU1620.hand held GPS observations or other comparable positioning techniques
 JU1620.and have an estimated accuracy of +/- 3 meters.
 JU1620
 JU1620.The orthometric height was determined by differential leveling and
 JU1620.adjusted by the NATIONAL GEODETIC SURVEY
 JU1620.in June 1991.
 JU1620
 JU1620.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1620.GEOID18 height accuracy estimate available here.
 JU1620
 JU1620.Click photographs - Photos may exist for this station.
 JU1620
 JU1620.The dynamic height is computed by dividing the NAVD 88
 JU1620.geopotential number by the normal gravity value computed on the
 JU1620.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1620.degrees latitude (g = 980.6199 gals.).
 JU1620
 JU1620.The modeled gravity was interpolated from observed gravity values.
 JU1620
 JU1620;                    North         East    Units  Estimated Accuracy
 JU1620;SPC MD       -   221,139.5     503,919.8     MT  (+/- 3 meters HH1 GPS) 
 JU1620
 JU1620_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3229489490(NAD 83)
 JU1620
 JU1620                          SUPERSEDED SURVEY CONTROL
 JU1620
 JU1620  NGVD 29 (11/26/84)   43.106  (m)          141.42   (f) ADJUSTED    2 0
 JU1620
 JU1620.Superseded values are not recommended for survey control.
 JU1620
 JU1620.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1620.See file dsdata.pdf to determine how the superseded data were derived.
 JU1620
 JU1620_MARKER: DR = REFERENCE MARK DISK
 JU1620_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1620_STAMPING: ARC NO 2 1958
 JU1620_MARK LOGO: CGS
 JU1620_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1620+STABILITY: SURFACE MOTION
 JU1620
 JU1620  HISTORY     - Date     Condition        Report By
 JU1620  HISTORY     - 1958     MONUMENTED       CGS
 JU1620  HISTORY     - 1959     GOOD             CGS
 JU1620  HISTORY     - 1961     GOOD             CGS
 JU1620
 JU1620                          STATION DESCRIPTION
 JU1620
 JU1620'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JU1620'3.2 MI NE FROM ELKTON.
 JU1620'3.2 MILES NORTHEAST ALONG STATE HIGHWAY 279 FROM THE HIGH SCHOOL
 JU1620'AT ELKTON, THENCE 0.05 MILE SOUTH ALONG A PRIVATE DRIVEWAY, 29
 JU1620'FEET NORTHWEST OF THE STATION, 32 FEET EAST OF THE CENTER LINE OF
 JU1620'THE DRIVEWAY, 20 FEET EAST OF A FENCE LINE, 1 1/2 FEET SOUTH OF
 JU1620'A METAL WITNESS POST, SET IN THE TOP OF A CONCRETE POST FLUSH
 JU1620'WITH THE GROUND.
 JU1620
 JU1620                          STATION RECOVERY (1961)
 JU1620
 JU1620'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961
 JU1620'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU2488 ***********************************************************************
 JU2488  DESIGNATION -  ARC RM 3
 JU2488  PID         -  JU2488
 JU2488  STATE/COUNTY-  MD/CECIL
 JU2488  COUNTRY     -  US
 JU2488  USGS QUAD   -  NEWARK WEST (2016)
 JU2488
 JU2488                         *CURRENT SURVEY CONTROL
 JU2488  ______________________________________________________________________
 JU2488* NAD 83(1986) POSITION- 39 39 08.52   (N) 075 47 20.43   (W)   HD_HELD1
 JU2488* NAVD 88 ORTHO HEIGHT -    42.24  (+/-2cm)      138.6   (feet) VERTCON3
 JU2488  ______________________________________________________________________
 JU2488  GEOID HEIGHT    -        -33.051 (meters)                     GEOID18
 JU2488  VERT ORDER      -  THIRD (See Below)
 JU2488
 JU2488.The horizontal coordinates were determined by differentially corrected
 JU2488.hand held GPS observations or other comparable positioning techniques
 JU2488.and have an estimated accuracy of +/- 3 meters.
 JU2488
 JU2488.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU2488.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU2488
 JU2488.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU2488.GEOID18 height accuracy estimate available here.
 JU2488
 JU2488.The vertical order pertains to the NGVD 29 superseded value.
 JU2488
 JU2488.Click photographs - Photos may exist for this station.
 JU2488
 JU2488;                    North         East    Units  Estimated Accuracy
 JU2488;SPC MD       -   221,121.5     503,935.0     MT  (+/- 3 meters HH1 GPS) 
 JU2488
 JU2488_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3230989471(NAD 83)
 JU2488
 JU2488                          SUPERSEDED SURVEY CONTROL
 JU2488
 JU2488  NGVD 29 (??/??/??)   42.57   (m)          139.7    (f) RESET       3  
 JU2488
 JU2488.Superseded values are not recommended for survey control.
 JU2488
 JU2488.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU2488.See file dsdata.pdf to determine how the superseded data were derived.
 JU2488
 JU2488_MARKER: DR = REFERENCE MARK DISK
 JU2488_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU2488_STAMPING: ARC 1958 NO 3 1977
 JU2488_MARK LOGO: NGS
 JU2488_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU2488+STABILITY: SURFACE MOTION
 JU2488_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU2488+SATELLITE: SATELLITE OBSERVATIONS - October 25, 1984
 JU2488
 JU2488  HISTORY     - Date     Condition        Report By
 JU2488  HISTORY     - 1977     MONUMENTED       NGS
 JU2488  HISTORY     - 19841025 GOOD             NGS
 JU2488  HISTORY     - 19960811 MARK NOT FOUND   USPSQD
 JU2488
 JU2488                          STATION DESCRIPTION
 JU2488
 JU2488'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 JU2488'3.0 MI NE FROM ELKTON.
 JU2488'MARK LOCATED 1.05 MI NE ALONG STATE HIGHWAY 279 FROM ITS JUNCTION
 JU2488'WITH INTERSTATE HIGHWAY 95, THENCE 0.05 MI SE ON A FARM ROAD TO
 JU2488'MR MCINTIRES HOME ON THE LEFT AND THE MONUMENT.35.8 FEET SOUTH OF
 JU2488'THE MOST SOUTH CORNER OF THE HOUSE, 7 FEET NE OF THE CENTER OF THE
 JU2488'FARM ROAD AND 2.5 FEET WEST OF A POWERLINE LIGHT POLE.A DISK SET IN
 JU2488'THE TOP OF A CONCRETE POST. 2 FEET ABOVE THE FARM ROAD.
 JU2488
 JU2488                          STATION RECOVERY (1984)
 JU2488
 JU2488'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 JU2488'RECOVERED IN GOOD CONDITION.
 JU2488
 JU2488                          STATION RECOVERY (1996)
 JU2488
 JU2488'RECOVERY NOTE BY US POWER SQUADRON 1996
 JU2488'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU2489 ***********************************************************************
 JU2489  DESIGNATION -  ARC RM 4
 JU2489  PID         -  JU2489
 JU2489  STATE/COUNTY-  MD/CECIL
 JU2489  COUNTRY     -  US
 JU2489  USGS QUAD   -  NEWARK WEST (2016)
 JU2489
 JU2489                         *CURRENT SURVEY CONTROL
 JU2489  ______________________________________________________________________
 JU2489* NAD 83(1986) POSITION- 39 39 08.64   (N) 075 47 21.10   (W)   HD_HELD1
 JU2489* NAVD 88 ORTHO HEIGHT -    42.40  (+/-2cm)      139.1   (feet) VERTCON3
 JU2489  ______________________________________________________________________
 JU2489  GEOID HEIGHT    -        -33.051 (meters)                     GEOID18
 JU2489  VERT ORDER      -  THIRD (See Below)
 JU2489
 JU2489.The horizontal coordinates were determined by differentially corrected
 JU2489.hand held GPS observations or other comparable positioning techniques
 JU2489.and have an estimated accuracy of +/- 3 meters.
 JU2489
 JU2489.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU2489.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU2489
 JU2489.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU2489.GEOID18 height accuracy estimate available here.
 JU2489
 JU2489.The vertical order pertains to the NGVD 29 superseded value.
 JU2489
 JU2489.Click photographs - Photos may exist for this station.
 JU2489
 JU2489;                    North         East    Units  Estimated Accuracy
 JU2489;SPC MD       -   221,124.9     503,919.0     MT  (+/- 3 meters HH1 GPS) 
 JU2489
 JU2489_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3229389475(NAD 83)
 JU2489
 JU2489                          SUPERSEDED SURVEY CONTROL
 JU2489
 JU2489  NGVD 29 (??/??/??)   42.74   (m)          140.2    (f) RESET       3  
 JU2489
 JU2489.Superseded values are not recommended for survey control.
 JU2489
 JU2489.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU2489.See file dsdata.pdf to determine how the superseded data were derived.
 JU2489
 JU2489_MARKER: DR = REFERENCE MARK DISK
 JU2489_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU2489_STAMPING: ARC 1958 NO 4 1977
 JU2489_MARK LOGO: NGS
 JU2489_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU2489+STABILITY: SURFACE MOTION
 JU2489_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU2489+SATELLITE: SATELLITE OBSERVATIONS - October 25, 1984
 JU2489
 JU2489  HISTORY     - Date     Condition        Report By
 JU2489  HISTORY     - 1977     MONUMENTED       NGS
 JU2489  HISTORY     - 19841025 GOOD             NGS
 JU2489  HISTORY     - 19960811 MARK NOT FOUND   USPSQD
 JU2489
 JU2489                          STATION DESCRIPTION
 JU2489
 JU2489'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 JU2489'3.0 MI NE FROM ELKTON.
 JU2489'MARK LOCATED 1.05 MI NE ALONG STATE HIGHWAY 279 FROM ITS JUNCTION
 JU2489'WITH INTERSTATE HIGHWAY 95, THENCE 0.05 MI SE ON A FARM ROAD TO
 JU2489'MR MCINTIRES HOME ON THE LEFT AND THE MONUMENT.40.7 FEET SW OF THE
 JU2489'MOST WEST ENTRANCE TO THE HOUSE, 34.6 FEET SE OF A 12 INCH MAPLE
 JU2489'THE TOP OF A CONCRETE POST. ABOUT LEVEL WITH THE THE FARM ROAD.
 JU2489
 JU2489                          STATION RECOVERY (1984)
 JU2489
 JU2489'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 JU2489'RECOVERED IN GOOD CONDITION.
 JU2489
 JU2489                          STATION RECOVERY (1996)
 JU2489
 JU2489'RECOVERY NOTE BY US POWER SQUADRON 1996
 JU2489'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6711 ***********************************************************************
 JV6711  DESIGNATION -  ARCHER
 JV6711  PID         -  JV6711
 JV6711  STATE/COUNTY-  MD/HARFORD
 JV6711  COUNTRY     -  US
 JV6711  USGS QUAD   -  FAWN GROVE (2019)
 JV6711
 JV6711                         *CURRENT SURVEY CONTROL
 JV6711  ______________________________________________________________________
 JV6711* NAD 83(2011) POSITION- 39 43 16.77202(N) 076 24 52.84924(W)   ADJUSTED
 JV6711* NAD 83(2011) ELLIP HT-   160.648 (meters)        (06/27/12)   ADJUSTED
 JV6711* NAD 83(2011) EPOCH   -  2010.00
 JV6711* NAVD 88 ORTHO HEIGHT -   193.3   (meters)      634.    (feet) VERTCON3
 JV6711  ______________________________________________________________________
 JV6711  GEOID HEIGHT    -        -32.678 (meters)                     GEOID18
 JV6711  NAD 83(2011) X  -  1,153,950.356 (meters)                     COMP
 JV6711  NAD 83(2011) Y  - -4,775,212.112 (meters)                     COMP
 JV6711  NAD 83(2011) Z  -  4,054,337.191 (meters)                     COMP
 JV6711  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 JV6711
 JV6711  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6711  Standards:
 JV6711         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6711            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6711  -------------------------------------------------------------------
 JV6711  NETWORK    1.79   5.78           0.73   0.71   2.95      0.34098713
 JV6711  -------------------------------------------------------------------
 JV6711  Click here for local accuracies and other accuracy information.
 JV6711
 JV6711.The horizontal coordinates were established by GPS observations
 JV6711.and adjusted by the National Geodetic Survey in June 2012.
 JV6711
 JV6711.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6711.been affixed to the stable North American tectonic plate. See 
 JV6711.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6711
 JV6711.The horizontal coordinates are valid at the epoch date displayed above
 JV6711.which is a decimal equivalence of Year/Month/Day.
 JV6711
 JV6711.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6711.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6711
 JV6711.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6711.GEOID18 height accuracy estimate available here.
 JV6711
 JV6711.Click photographs - Photos may exist for this station.
 JV6711
 JV6711.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6711
 JV6711.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6711
 JV6711.The ellipsoidal height was determined by GPS observations
 JV6711.and is referenced to NAD 83.
 JV6711
 JV6711. The following values were computed from the NAD 83(2011) position.
 JV6711
 JV6711;                    North         East     Units Scale Factor Converg.
 JV6711;SPC MD       -   228,249.759   450,187.898   MT  1.00005874   +0 22 02.5
 JV6711;SPC MD       -   748,849.42  1,476,991.46   sFT  1.00005874   +0 22 02.5
 JV6711;SPC PA S     -    43,946.538   714,490.485   MT  1.00003991   +0 51 58.8
 JV6711;SPC PA S     -   144,181.27  2,344,124.20   sFT  1.00003991   +0 51 58.8
 JV6711;UTM  18      - 4,397,784.510   378,751.571   MT  0.99978099   -0 54 15.0
 JV6711
 JV6711!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6711!SPC MD       -   0.99997480  x   1.00005874  =   1.00003354
 JV6711!SPC PA S     -   0.99997480  x   1.00003991  =   1.00001471
 JV6711!UTM  18      -   0.99997480  x   0.99978099  =   0.99975579
 JV6711
 JV6711_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7875197784(NAD 83)
 JV6711
 JV6711|---------------------------------------------------------------------|
 JV6711| PID    Reference Object                     Distance      Geod. Az  |
 JV6711|                                                           dddmmss.s |
 JV6711| JV6712 ARCHER AZ MK                        348.283 METERS 09255     |
 JV6711|---------------------------------------------------------------------|
 JV6711
 JV6711                          SUPERSEDED SURVEY CONTROL
 JV6711
 JV6711  NAD 83(2007)-  39 43 16.77233(N)    076 24 52.84997(W) AD(2002.00) 0
 JV6711  ELLIP H (02/10/07)  160.669  (m)                       GP(2002.00)    
 JV6711  ELLIP H (09/18/02)  160.686  (m)                       GP(       ) 4 2
 JV6711  NAD 83(1991)-  39 43 16.77239(N)    076 24 52.84938(W) AD(       ) 1
 JV6711  ELLIP H (01/27/92)  160.682  (m)                       GP(       ) 4 1
 JV6711  NAD 83(1986)-  39 43 16.76538(N)    076 24 52.85541(W) AD(       ) 1
 JV6711  NGVD 29 (06/18/91)  193.6    (m)  UNKNOWN  model used  GPS OBS        
 JV6711
 JV6711.Superseded values are not recommended for survey control.
 JV6711
 JV6711.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6711.See file dsdata.pdf to determine how the superseded data were derived.
 JV6711
 JV6711_MARKER: DD = SURVEY DISK
 JV6711_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6711_STAMPING: ARCHER 120 1989
 JV6711_MARK LOGO: MD-025
 JV6711_PROJECTION: FLUSH
 JV6711_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6711_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6711+STABILITY: SURFACE MOTION
 JV6711_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6711+SATELLITE: SATELLITE OBSERVATIONS - June 09, 2020
 JV6711
 JV6711  HISTORY     - Date     Condition        Report By
 JV6711  HISTORY     - 1989     MONUMENTED       RDA
 JV6711  HISTORY     - 20070225 GOOD             INDIV
 JV6711  HISTORY     - 20200609 GOOD             BASE9
 JV6711
 JV6711                          STATION DESCRIPTION
 JV6711
 JV6711'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6711'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6711'5.0 MILES NORTHWEST OF THE VILLAGE OF WHITEFORD.
 JV6711'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 24 AND
 JV6711'STATE HIGHWAY 136 AT FIVE FORKS PROCEED NORTHWEST ALONG HIGHWAY 24 0.5
 JV6711'MILES TO ITS INTERSECTION WITH CONSTITUTION ROAD.  TURN RIGHT AND
 JV6711'PROCEED NORTHEAST ALONG CONSTITUTION ROAD 1.30 MILES TO ITS
 JV6711'INTERSECTION WITH STATE HIGHWAY 624 AND THE STATION IN THE NORTHEAST
 JV6711'CORNER OF THE INTERSECTION.
 JV6711'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6711'ABOUT 1 INCH BELOW GROUND STAMPED 120 ARCHER 1989.  THE STATION IS
 JV6711'36.5 FEET NORTHEAST OF THE CENTERLINE OF HIGHWAY 624, 18.5 FEET NORTH
 JV6711'OF POWER POLE NUMBER 63 1/2, AND 24.0 FEET SOUTHEAST OF CENTERLINE OF
 JV6711'PENNSYLVANIA STATE HIGHWAY 851.
 JV6711
 JV6711                          STATION RECOVERY (2007)
 JV6711
 JV6711'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (TRA)
 JV6711'RECOVERED AS DESCRIBED
 JV6711
 JV6711                          STATION RECOVERY (2020)
 JV6711
 JV6711'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2020 (RSD)
 JV6711'POWER POLE 63 1/2 NOTED IN THE 1989 DESCRIPTION IS NOW DESIGNATED BG+E
 JV6711'37559-14416.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6712 ***********************************************************************
 JV6712  DESIGNATION -  ARCHER AZ MK
 JV6712  PID         -  JV6712
 JV6712  STATE/COUNTY-  MD/HARFORD
 JV6712  COUNTRY     -  US
 JV6712  USGS QUAD   -  FAWN GROVE (2019)
 JV6712
 JV6712                         *CURRENT SURVEY CONTROL
 JV6712  ______________________________________________________________________
 JV6712* NAD 83(2011) POSITION- 39 43 16.19715(N) 076 24 38.24471(W)   ADJUSTED
 JV6712* NAD 83(2011) ELLIP HT-   165.303 (meters)        (06/27/12)   ADJUSTED
 JV6712* NAD 83(2011) EPOCH   -  2010.00
 JV6712* NAVD 88 ORTHO HEIGHT -   198.0   (meters)      650.    (feet) VERTCON3
 JV6712  ______________________________________________________________________
 JV6712  GEOID HEIGHT    -        -32.684 (meters)                     GEOID18
 JV6712  NAD 83(2011) X  -  1,154,291.964 (meters)                     COMP
 JV6712  NAD 83(2011) Y  - -4,775,144.889 (meters)                     COMP
 JV6712  NAD 83(2011) Z  -  4,054,326.529 (meters)                     COMP
 JV6712  LAPLACE CORR    -         -3.44  (seconds)                    DEFLEC18
 JV6712
 JV6712  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6712  Standards:
 JV6712         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6712            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6712  -------------------------------------------------------------------
 JV6712  NETWORK    1.89   5.94           0.75   0.77   3.03      0.35322321
 JV6712  -------------------------------------------------------------------
 JV6712  Click here for local accuracies and other accuracy information.
 JV6712
 JV6712.The horizontal coordinates were established by GPS observations
 JV6712.and adjusted by the National Geodetic Survey in June 2012.
 JV6712
 JV6712.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6712.been affixed to the stable North American tectonic plate. See 
 JV6712.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6712
 JV6712.The horizontal coordinates are valid at the epoch date displayed above
 JV6712.which is a decimal equivalence of Year/Month/Day.
 JV6712
 JV6712.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6712.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6712
 JV6712.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6712.GEOID18 height accuracy estimate available here.
 JV6712
 JV6712.Click photographs - Photos may exist for this station.
 JV6712
 JV6712.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6712
 JV6712.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6712
 JV6712.The ellipsoidal height was determined by GPS observations
 JV6712.and is referenced to NAD 83.
 JV6712
 JV6712. The following values were computed from the NAD 83(2011) position.
 JV6712
 JV6712;                    North         East     Units Scale Factor Converg.
 JV6712;SPC MD       -   228,234.267   450,535.857   MT  1.00005870   +0 22 11.7
 JV6712;SPC MD       -   748,798.59  1,478,133.06   sFT  1.00005870   +0 22 11.7
 JV6712;SPC PA S     -    43,934.076   714,838.559   MT  1.00003995   +0 52 08.3
 JV6712;SPC PA S     -   144,140.38  2,345,266.17   sFT  1.00003995   +0 52 08.3
 JV6712;UTM  18      - 4,397,761.307   379,099.004   MT  0.99977996   -0 54 05.7
 JV6712
 JV6712!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6712!SPC MD       -   0.99997407  x   1.00005870  =   1.00003277
 JV6712!SPC PA S     -   0.99997407  x   1.00003995  =   1.00001402
 JV6712!UTM  18      -   0.99997407  x   0.99977996  =   0.99975403
 JV6712
 JV6712_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7909997761(NAD 83)
 JV6712
 JV6712|---------------------------------------------------------------------|
 JV6712| PID    Reference Object                     Distance      Geod. Az  |
 JV6712|                                                           dddmmss.s |
 JV6712| JV6711 ARCHER                              348.283 METERS 27255     |
 JV6712|---------------------------------------------------------------------|
 JV6712
 JV6712                          SUPERSEDED SURVEY CONTROL
 JV6712
 JV6712  NAD 83(2007)-  39 43 16.19746(N)    076 24 38.24544(W) AD(2002.00) 0
 JV6712  ELLIP H (02/10/07)  165.324  (m)                       GP(2002.00)    
 JV6712  ELLIP H (09/18/02)  165.341  (m)                       GP(       ) 4 2
 JV6712  NAD 83(1991)-  39 43 16.19752(N)    076 24 38.24478(W) AD(       ) 1
 JV6712  ELLIP H (01/27/92)  165.336  (m)                       GP(       ) 4 1
 JV6712  NAD 83(1986)-  39 43 16.19051(N)    076 24 38.25081(W) AD(       ) 1
 JV6712  NGVD 29 (06/18/91)  198.2    (m)  UNKNOWN  model used  GPS OBS        
 JV6712
 JV6712.Superseded values are not recommended for survey control.
 JV6712
 JV6712.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6712.See file dsdata.pdf to determine how the superseded data were derived.
 JV6712
 JV6712_MARKER: DZ = AZIMUTH MARK DISK
 JV6712_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6712_STAMPING: 120 ARCHER 1989
 JV6712_MARK LOGO: MD-025
 JV6712_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6712_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6712+STABILITY: SURFACE MOTION
 JV6712_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6712+SATELLITE: SATELLITE OBSERVATIONS - January 04, 1990
 JV6712
 JV6712  HISTORY     - Date     Condition        Report By
 JV6712  HISTORY     - 1989     MONUMENTED       RDA
 JV6712  HISTORY     - 19900104 GOOD
 JV6712
 JV6712                          STATION DESCRIPTION
 JV6712
 JV6712'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6712'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED EAST ALONG HIGHWAY
 JV6712'624 0.2 MILES TO THE MARK ON THE RIGHT.
 JV6712'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6712'ABOUT 1 INCH BELOW GROUND STAMPED 120 ARCHER 1989.  THE MARK IS 148.6
 JV6712'FEET SOUTHEAST OF CONOWINGO POWER POLE NUMBER 7, 3.3 FEET NORTHWEST OF
 JV6712'CONOWINGO POWER POLE NUMBER 8, 22.0 FEET SOUTHWEST OF THE CENTERLINE
 JV6712'OF HIGHWAY 624 AND 1142.68 FEET FROM THE STATION.
 JV6712
 JV6712                          STATION RECOVERY (1990)
 JV6712
 JV6712'RECOVERED 1990
 JV6712'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4123 ***********************************************************************
 JU4123  DESIGNATION -  ARES AZ MK 2
 JU4123  PID         -  JU4123
 JU4123  STATE/COUNTY-  MD/CECIL
 JU4123  COUNTRY     -  US
 JU4123  USGS QUAD   -  NORTH EAST (2016)
 JU4123
 JU4123                         *CURRENT SURVEY CONTROL
 JU4123  ______________________________________________________________________
 JU4123* NAD 83(1986) POSITION- 39 36 42.06   (N) 075 56 18.36   (W)   HD_HELD1
 JU4123* NAVD 88 ORTHO HEIGHT -    12.811 (meters)       42.03  (feet) ADJUSTED
 JU4123  ______________________________________________________________________
 JU4123  GEOID HEIGHT    -        -33.147 (meters)                     GEOID18
 JU4123  DYNAMIC HEIGHT  -         12.805 (meters)       42.01  (feet) COMP
 JU4123  MODELED GRAVITY -    980,132.5   (mgal)                       NAVD 88
 JU4123
 JU4123  VERT ORDER      -  FIRST     CLASS II
 JU4123
 JU4123.The horizontal coordinates were determined by differentially corrected
 JU4123.hand held GPS observations or other comparable positioning techniques
 JU4123.and have an estimated accuracy of +/- 3 meters.
 JU4123
 JU4123.The orthometric height was determined by differential leveling and
 JU4123.adjusted by the NATIONAL GEODETIC SURVEY
 JU4123.in July 2019.
 JU4123
 JU4123.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4123.GEOID18 height accuracy estimate available here.
 JU4123
 JU4123.Click photographs - Photos may exist for this station.
 JU4123
 JU4123.The dynamic height is computed by dividing the NAVD 88
 JU4123.geopotential number by the normal gravity value computed on the
 JU4123.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4123.degrees latitude (g = 980.6199 gals.).
 JU4123
 JU4123.The modeled gravity was interpolated from observed gravity values.
 JU4123
 JU4123;                    North         East    Units  Estimated Accuracy
 JU4123;SPC MD       -   216,445.0     491,163.6     MT  (+/- 3 meters HH1 GPS) 
 JU4123
 JU4123_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1944385079(NAD 83)
 JU4123
 JU4123                          SUPERSEDED SURVEY CONTROL
 JU4123
 JU4123  NAVD 88 (11/18/05)   12.811  (m)           42.03   (f) SUPERSEDED  3 0
 JU4123  NGVD 29 (11/18/05)   13.05   (m)           42.8    (f) RESET       3  
 JU4123
 JU4123.Superseded values are not recommended for survey control.
 JU4123
 JU4123.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4123.See file dsdata.pdf to determine how the superseded data were derived.
 JU4123
 JU4123_MARKER: DD = SURVEY DISK
 JU4123_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JU4123_SP_SET: BRIDGE ABUTMENT
 JU4123_STAMPING: ARES 1964 AZ MK 2 1988
 JU4123_MARK LOGO: MDSHA
 JU4123_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU4123_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU4123+SATELLITE: SATELLITE OBSERVATIONS - October 01, 2025
 JU4123
 JU4123  HISTORY     - Date     Condition        Report By
 JU4123  HISTORY     - 1988     MONUMENTED       MDSHA
 JU4123  HISTORY     - 20150506 GOOD             JARICE
 JU4123  HISTORY     - 20251001 GOOD             MDSHA
 JU4123
 JU4123                          STATION DESCRIPTION
 JU4123
 JU4123'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1988
 JU4123'THE MARKER IS LOCATED 9.65 KM (6.00 MI) WEST ALONG U.S. HIGHWAY 40
 JU4123'FROM ITS JUNCTION WITH STATE HIGHWAY 213 IN ELKTON.  IT IS SET IN A
 JU4123'DRILL HOLE IN THE NORTHEAST END OF A BRIDGE DECK ALONG THE NORTHWEST
 JU4123'SIDE OF THE EAST BOUND LANE OF U.S. HIGHWAY 40, 4.33 M (14.2 FT)
 JU4123'NORTHWEST OF THE CENTER OF THE EAST BOUND LANE OF U.S. HIGHWAY 40,
 JU4123'0.91 M (3.0 FT) SOUTHEAST OF THE SOUTHEAST SIDE OF THE NORTHWEST
 JU4123'PARAPET WALL FOR THE BRIDGE, 0.27 M (0.9 FT) NORTHEAST OF THE MOST
 JU4123'NORTHEAST EXPANSION JOINT FOR THE BRIDGE AND SET DIRECTLY OVER THE
 JU4123'BRIDGE ABUTMENT.
 JU4123
 JU4123                          STATION RECOVERY (2015)
 JU4123
 JU4123'RECOVERY NOTE BY J A RICE INC 2015 (MRA)
 JU4123'RECOVERED AS DESCRIBED.
 JU4123
 JU4123                          STATION RECOVERY (2025)
 JU4123
 JU4123'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 JU4123'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5618 ***********************************************************************
 JV5618  DESIGNATION -  ARLINGTON 1915
 JV5618  PID         -  JV5618
 JV5618  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5618  COUNTRY     -  US
 JV5618  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5618
 JV5618                         *CURRENT SURVEY CONTROL
 JV5618  ______________________________________________________________________
 JV5618* NAD 83(1991) POSITION- 39 20 10.13941(N) 076 41 11.54377(W)   ADJUSTED
 JV5618* NAVD 88 ORTHO HEIGHT -   137.    (meters)      449.    (feet) SCALED
 JV5618  ______________________________________________________________________
 JV5618  GEOID HEIGHT    -        -32.407 (meters)                     GEOID18
 JV5618  LAPLACE CORR    -         -6.00  (seconds)                    DEFLEC18
 JV5618  HORZ ORDER      -  SECOND
 JV5618
 JV5618.The horizontal coordinates were established by classical geodetic methods
 JV5618.and adjusted by the National Geodetic Survey in January 1992.
 JV5618
 JV5618.The orthometric height was scaled from a topographic map.
 JV5618
 JV5618.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5618.GEOID18 height accuracy estimate available here.
 JV5618
 JV5618.Click photographs - Photos may exist for this station.
 JV5618
 JV5618.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5618
 JV5618. The following values were computed from the NAD 83(1991) position.
 JV5618
 JV5618;                    North         East     Units Scale Factor Converg.
 JV5618;SPC MD       -   185,370.186   427,024.428   MT  0.99998207   +0 11 48.3
 JV5618;SPC MD       -   608,168.69  1,400,995.98   sFT  0.99998207   +0 11 48.3
 JV5618;UTM  18      - 4,355,436.794   354,648.915   MT  0.99986013   -1 04 09.2
 JV5618
 JV5618!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5618!SPC MD       -   0.99998363  x   0.99998207  =   0.99996570
 JV5618!UTM  18      -   0.99998363  x   0.99986013  =   0.99984376
 JV5618
 JV5618:                Primary Azimuth Mark                     Grid Az
 JV5618:SPC MD       -  ROLAND 1916                              082 35 07.5
 JV5618:UTM  18      -  ROLAND 1916                              083 51 05.0
 JV5618
 JV5618_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5464855436(NAD 83)
 JV5618
 JV5618|---------------------------------------------------------------------|
 JV5618| PID    Reference Object                     Distance      Geod. Az  |
 JV5618|                                                           dddmmss.s |
 JV5618| JV5643 PIMLICO FLAGSTAFF                   APPROX. 2.1 KM 0262842.5 |
 JV5618| JV5581 PROTESTANT EPIS CHURCH SPIRE        APPROX. 6.2 KM 0590910.2 |
 JV5618| JV5645 ROLAND 1916                         APPROX. 4.5 KM 0824655.8 |
 JV5618| JV5641 MT HOPE CUPOLA                      APPROX. 2.4 KM 3085449.5 |
 JV5618|---------------------------------------------------------------------|
 JV5618
 JV5618                          SUPERSEDED SURVEY CONTROL
 JV5618
 JV5618  NAD 83(1986)-  39 20 10.13614(N)    076 41 11.55181(W) AD(       ) 2
 JV5618  NAD 27      -  39 20 09.75400(N)    076 41 12.65700(W) AD(       ) 2
 JV5618  USSD        -  39 20 10.12600(N)    076 41 12.47500(W) AD(       ) 3
 JV5618
 JV5618.Superseded values are not recommended for survey control.
 JV5618
 JV5618.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5618.See file dsdata.pdf to determine how the superseded data were derived.
 JV5618
 JV5618_MARKER: Z = SEE DESCRIPTION
 JV5618_SETTING: 0 = UNSPECIFIED SETTING
 JV5618_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5618
 JV5618  HISTORY     - Date     Condition        Report By
 JV5618  HISTORY     - 1915     MONUMENTED       CGS
 JV5618  HISTORY     - 1933     GOOD             CGS
 JV5618  HISTORY     - 1938     GOOD             CGS
 JV5618  HISTORY     - 1940     GOOD             CGS
 JV5618
 JV5618                          STATION DESCRIPTION
 JV5618
 JV5618'DESCRIBED BY COAST AND GEODETIC SURVEY 1915 (EWE)
 JV5618'STATION IS IN WEST ARLINGTON, ON GARRISON AVENUE, ON A STEEL
 JV5618'WATER TOWER SURROUNDED BY A MASONRY STRUCTURE.  ON THE TOP OF
 JV5618'THE TOWER IS AN OPEN PAVILION.  IT IS MARKED BY A TACK IN THE
 JV5618'WOODEN FLOOR.
 JV5618'
 JV5618'ADJUSTMENT OF TRIANGULATION INDICATES THAT ARLINGTON WAS NOT
 JV5618'RECOVERED BY R.D.H. AND C.D.M. AND STATION HAS BEEN NAMED
 JV5618'ARLINGTON 2.
 JV5618
 JV5618                          STATION RECOVERY (1933)
 JV5618
 JV5618'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5618'STATION IS IN WEST ARLINGTON ON GARRISON AVENUE, ON A STEEL WATER
 JV5618'TOWER SURROUNDED BY A MASONRY STRUCTURE.  AT THE TOP OF THE TOWER
 JV5618'IS AN OPEN PAVILION WITH A WOOD FLOOR.  STATION OF 1915 IS MARKED
 JV5618'BY A TACK IN THE FLOOR WITH A TRIANGLE CUT IN THE WOOD AROUND THE
 JV5618'TACK.  STATION IS 1.060 METERS ESE OF THE CENTER DRAIN.
 JV5618'
 JV5618'THE STATION WAS RECOVERED AND APPARENTLY HAD NOT BEEN
 JV5618'DISTURBED.  THERE WERE TWO NEW REFERENCE MARKS PUT IN THE COPING
 JV5618'AROUND THE TOP OF THE TOWER AND THERE ARE SEVERAL NATURAL OBJECTS
 JV5618'THAT CAN BE USED AS AZIMUTH MARKS.  THE TWO NEW REFERENCE MARKS
 JV5618'WERE MARKED ARLINGTON 1933.
 JV5618'
 JV5618'REFERENCE MARK NO.1 IS 5.735 METERS WSW OF THE STATION SET IN
 JV5618'THE COPING AROUND THE TOP OF THE TOWER IN THE W END OF THE SW
 JV5618'FACE OF THE TOP OF THE TOWER.  REFERENCE MARK NO.2 IS 5.900 METERS
 JV5618'NNW OF THE STATION SET IN THE TOP OF THE COPING AROUND THE TOP
 JV5618'OF THE TOWER IN THE W END OF THE N FACE OF THE TOWER.
 JV5618'
 JV5618'TO REACH THE STATION GO N ON N MONROE STREET TO GWINS FALLS
 JV5618'PARKWAY, TURN LEFT ON GWINS FALLS PARKWAY AT THE JUNCTION WITH N
 JV5618'MONROE STREET AND GO 1.4 MILES TO GARRISON AVENUE, GO NW ON
 JV5618'GARRISON AVENUE 1.8 MILES TO RIDGEWOOD STREET.  THE TOWER IS OFF
 JV5618'GARRISON AVENUE BETWEEN RIDGEWOOD STREET AND GRENADE STREET.  THE
 JV5618'TOWER HAS A CARETAKER ON THE GROUNDS WHO CAN OPEN THE DOOR, BUT
 JV5618'IF MR. W.B. HOKE IS CALLED ON IN BALTIMORE, PHONE, PLAZA 2000,
 JV5618'ROOM 411, HE WILL SEND A KEY TO THE PARTY.
 JV5618
 JV5618                          STATION RECOVERY (1938)
 JV5618
 JV5618'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV5618'THE STATION AND REFERENCE MARKS RECOVERED AS NOTED.
 JV5618'
 JV5618'ORIGINAL DESCRIPTION GOOD.
 JV5618
 JV5618                          STATION RECOVERY (1940)
 JV5618
 JV5618'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5618'MEASUREMENTS MADE IN 1940 INDICATE THAT A TACK IN THE WOODEN FLOOR
 JV5618'OF THE WATER TOWER IS THE ORIGINAL STATION ARLINGTON ESTABLISHED
 JV5618'BY E.W.E. IN 1915.  IT IS 1.019 METERS FROM ARLINGTON 2
 JV5618'N 67 DEG 03 MIN W.
 JV5618'
 JV5618'THIS STATION WAS NOT OCCUPIED BY R.D.H. IN 1933 OR BY C.D.M. IN
 JV5618'1938.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5612 ***********************************************************************
 JV5612  DESIGNATION -  ARLINGTON 2
 JV5612  PID         -  JV5612
 JV5612  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5612  COUNTRY     -  US
 JV5612  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5612
 JV5612                         *CURRENT SURVEY CONTROL
 JV5612  ______________________________________________________________________
 JV5612* NAD 83(1991) POSITION- 39 20 10.12666(N) 076 41 11.50499(W)   ADJUSTED
 JV5612* NAVD 88 ORTHO HEIGHT -   137.    (meters)      449.    (feet) SCALED
 JV5612  ______________________________________________________________________
 JV5612  GEOID HEIGHT    -        -32.407 (meters)                     GEOID18
 JV5612  LAPLACE CORR    -         -6.00  (seconds)                    DEFLEC18
 JV5612  HORZ ORDER      -  FIRST
 JV5612
 JV5612.The horizontal coordinates were established by classical geodetic methods
 JV5612.and adjusted by the National Geodetic Survey in January 1992.
 JV5612
 JV5612.The orthometric height was scaled from a topographic map.
 JV5612
 JV5612.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5612.GEOID18 height accuracy estimate available here.
 JV5612
 JV5612.Click photographs - Photos may exist for this station.
 JV5612
 JV5612.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5612
 JV5612. The following values were computed from the NAD 83(1991) position.
 JV5612
 JV5612;                    North         East     Units Scale Factor Converg.
 JV5612;SPC MD       -   185,369.796   427,025.358   MT  0.99998207   +0 11 48.3
 JV5612;SPC MD       -   608,167.41  1,400,999.03   sFT  0.99998207   +0 11 48.3
 JV5612;UTM  18      - 4,355,436.383   354,649.836   MT  0.99986013   -1 04 09.2
 JV5612
 JV5612!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5612!SPC MD       -   0.99998363  x   0.99998207  =   0.99996570
 JV5612!UTM  18      -   0.99998363  x   0.99986013  =   0.99984376
 JV5612
 JV5612:                Primary Azimuth Mark                     Grid Az
 JV5612:SPC MD       -  NOTRE DAME TWR CROSS C OF B              072 59 52.3
 JV5612:UTM  18      -  NOTRE DAME TWR CROSS C OF B              074 15 49.8
 JV5612
 JV5612_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5464955436(NAD 83)
 JV5612
 JV5612|---------------------------------------------------------------------|
 JV5612| PID    Reference Object                     Distance      Geod. Az  |
 JV5612|                                                           dddmmss.s |
 JV5612| JV5578 NOTRE DAME TWR CROSS C OF B         APPROX. 5.9 KM 0731140.6 |
 JV5612| JV5586 WARRENTON APARTMENT HOUSE           APPROX. 5.9 KM 0883841.5 |
 JV5612| JV5497 BALTIMORE TRUST FLAT TOP TOWER      APPROX. 8.1 KM 1294732.7 |
 JV5612| JV5622 CATONSVILLE SPR GROVE HOSP STK      APPROX. 8.7 KM 2030652.3 |
 JV5612| CA9890 ARLINGTON 2 RM 1                      5.730 METERS 24343     |
 JV5612| JV6056 HOLLOFIELD FIRE TWR NE COR FP       APPROX.10.5 KM 2443112.1 |
 JV5612| JV5636 SUDBROOK PARK WBAL N RAD TOWER      APPROX. 5.2 KM 3044607.7 |
 JV5612| JV5637 SUDBROOK PARK WBAL S RAD TOWER      APPROX. 5.1 KM 3045758.3 |
 JV5612| JV6041 MT WILSON SANITORIUM TANK           APPROX. 8.5 KM 3075007.4 |
 JV5612| JV5641 MT HOPE CUPOLA                      APPROX. 2.4 KM 3085425.7 |
 JV5612| JV6033 PLEASANT HILL METRO WATER TANK      APPROX.13.7 KM 3191202.5 |
 JV5612| JV6026 REISTERSTOWN METRO WATER TANK       APPROX.19.6 KM 3212649.0 |
 JV5612| CA9891 ARLINGTON 2 RM 2                      5.900 METERS 33845     |
 JV5612|---------------------------------------------------------------------|
 JV5612
 JV5612                          SUPERSEDED SURVEY CONTROL
 JV5612
 JV5612  NAD 83(1986)-  39 20 10.12339(N)    076 41 11.51303(W) AD(       ) 1
 JV5612  NAD 27      -  39 20 09.74100(N)    076 41 12.61700(W) AD(       ) 1
 JV5612
 JV5612.Superseded values are not recommended for survey control.
 JV5612
 JV5612.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5612.See file dsdata.pdf to determine how the superseded data were derived.
 JV5612
 JV5612
 JV5612  HISTORY     - Date     Condition        Report By
 JV5612  HISTORY     - 1933     MONUMENTED       CGS
 JV5612  HISTORY     - 1933     GOOD             CGS
 JV5612  HISTORY     - 1938     GOOD             CGS
 JV5612  HISTORY     - 1940     GOOD             CGS
 JV5612  HISTORY     - 1940     GOOD             CGS
 JV5612
 JV5612                          STATION DESCRIPTION
 JV5612
 JV5612'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5612'STATION WAS RECOVERED AND APPARENTLY HAD NOT BEEN
 JV5612'DISTURBED.  STATION IS MARKED BY A TACK IN THE FLOOR, AND A TRIANGLE
 JV5612'CUT IN THE WOOD AROUND THE TACK.  STATION IS 1.060 METERS ESE OF
 JV5612'THE CENTER DRAIN.
 JV5612'
 JV5612'THERE WERE TWO NEW REFERENCE MARKS PUT IN THE COPING AROUND THE
 JV5612'TOP OF THE TOWER AND THERE ARE SEVERAL NATURAL OBJECTS THAT CAN BE
 JV5612'USED AS AZIMUTH MARKS.  THE TWO NEW REFERENCE MARKS WERE MARKED
 JV5612'ARLINGTON 1933.
 JV5612'
 JV5612'REFERENCE MARK NO.1 IS 5.735 METERS WSW OF THE STATION, SET IN
 JV5612'THE COPING AROUND THE TOP OF THE TOWER IN THE W END OF THE SW FACE
 JV5612'OF THE TOWER.
 JV5612'
 JV5612'REFERENCE MARK NO.2 IS 5.900 METERS NNW OF THE STATION SET IN THE
 JV5612'TOP OF THE COPING AROUND THE TOP OF THE TOWER IN THE W END OF THE N
 JV5612'FACE OF THE TOWER.
 JV5612'
 JV5612'TO REACH THE STATION GO N ON N MONROE STREET TO GWINS FALLS
 JV5612'PARKWAY.  TURN LEFT ON GWINS FALLS PARKWAY AT THE JUNCTION WITH N
 JV5612'MONROE STREET AND GO 1.4 MILES TO GARRISON AVENUE.  GO NW ON
 JV5612'GARRISON AVENUE, 1.8 MILES TO RIDGEWOOD STREET.  THE TOWER IS OFF
 JV5612'GARRISON AVENUE BETWEEN RIDGEWOOD AND GRENADE STREETS.  THE TOWER
 JV5612'HAS A CARETAKER ON THE GROUNDS WHO CAN OPEN THE DOOR.  BUT, IF
 JV5612'MR. W.B. HOKE IS CALLED IN BALTIMORE, PHONE PLAZA 2000, ROOM
 JV5612'411, HE WILL SEND A KEY TO THE PARTY.
 JV5612
 JV5612                          STATION RECOVERY (1938)
 JV5612
 JV5612'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV5612'THE STATION MARK AND REFERENCE MARKS WERE RECOVERED AS NOTED.
 JV5612
 JV5612                          STATION RECOVERY (1940)
 JV5612
 JV5612'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5612'STATION WAS RECOVERED AS DESCRIBED.  THE FOLLOWING CHANGES HAVE
 JV5612'BEEN MADE IN THE STREET NAMES--GARRISON AVENUE, TO GARRISON
 JV5612'BOULEVARD.  RIDGEWOOD STREET TO RIDGEWOOD AVENUE, AND GRENADE
 JV5612'STREET TO GRENADE AVENUE.
 JV5612'
 JV5612'STATION OCCUPIED IN 1940 WAS TACK WITH TRIANGLE CUT AROUND IT IN
 JV5612'WOOD FLOOR, AND IS 1.060 METERS ESE OF THE CENTER OF DRAIN.  THE
 JV5612'STATION WAS OCCUPIED ECCENTRICALLY ON TWO OCCASIONS.  ECCENTRIC
 JV5612'NO.1 IS A TACK IN THE FLOOR 1.019 METERS NNW OF THE STATION AND
 JV5612'WAS MISTAKEN FOR THE STATION BY THE BUILDING PARTY.  ECCENTRIC
 JV5612'NO.2 WAS NECESSARY TO SEE DE SALES.
 JV5612
 JV5612                          STATION RECOVERY (1940)
 JV5612
 JV5612'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5612'IN WEST ARLINGTON, JUST OFF GARRISON BLVD. BETWEEN RIDGEWOOD
 JV5612'AVENUE AND GRENADA AVENUE, ON A STEEL WATER TOWER SURROUNDED BY A
 JV5612'MASONRY STRUCTURE.  AT TOP OF TOWER IS AN OPEN PAVILLION WITH WOOD
 JV5612'FLOOR.  STATION IS MARKED BY A TACK IN THE FLOOR WITH A TRIANGLE
 JV5612'CUT IN THE WOOD AROUND THE TACK, AND IS 1.060 METERS
 JV5612'EAST-SOUTHEAST OF THE CENTER DRAIN.  THIS IS THE STATION OCCUPIED
 JV5612'BY R.D.H. 1933, AND C.D.M. 1938.
 JV5612'
 JV5612'THE ORIGINAL STATION ARLINGTON 1915, WAS NOT OCCUPIED BY R.D.H. IN
 JV5612'1933 OR BY C.D.M. IN 1938.  IT IS MARKED BY A TACK IN THE FLOOR AND
 JV5612'IS 1.019 METERS FROM ARLINGTON 2 N 67 DEG 03 MIN W.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5677 ***********************************************************************
 JV5677  DESIGNATION -  ARMISTEAD
 JV5677  PID         -  JV5677
 JV5677  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5677  COUNTRY     -  US
 JV5677  USGS QUAD   -  CURTIS BAY (2016)
 JV5677
 JV5677                         *CURRENT SURVEY CONTROL
 JV5677  ______________________________________________________________________
 JV5677* NAD 83(1991) POSITION- 39 12 35.65056(N) 076 31 58.83813(W)   ADJUSTED
 JV5677* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV5677  ______________________________________________________________________
 JV5677  GEOID HEIGHT    -        -32.989 (meters)                     GEOID18
 JV5677  LAPLACE CORR    -         -2.58  (seconds)                    DEFLEC18
 JV5677  HORZ ORDER      -  SECOND
 JV5677
 JV5677.The horizontal coordinates were established by classical geodetic methods
 JV5677.and adjusted by the National Geodetic Survey in January 1992.
 JV5677
 JV5677.The orthometric height was scaled from a topographic map.
 JV5677
 JV5677.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5677.GEOID18 height accuracy estimate available here.
 JV5677
 JV5677.Click photographs - Photos may exist for this station.
 JV5677
 JV5677.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5677
 JV5677. The following values were computed from the NAD 83(1991) position.
 JV5677
 JV5677;                    North         East     Units Scale Factor Converg.
 JV5677;SPC MD       -   171,411.295   440,332.301   MT  0.99996681   +0 17 35.2
 JV5677;SPC MD       -   562,371.89  1,444,656.89   sFT  0.99996681   +0 17 35.2
 JV5677;UTM  18      - 4,341,189.656   367,643.825   MT  0.99981570   -0 58 09.3
 JV5677
 JV5677!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5677!SPC MD       -   1.00000396  x   0.99996681  =   0.99997077
 JV5677!UTM  18      -   1.00000396  x   0.99981570  =   0.99981966
 JV5677
 JV5677:                Primary Azimuth Mark                     Grid Az
 JV5677:SPC MD       -  QUARANTINE                               297 53 11.0
 JV5677:UTM  18      -  QUARANTINE                               299 08 55.5
 JV5677
 JV5677_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6764341189(NAD 83)
 JV5677
 JV5677|---------------------------------------------------------------------|
 JV5677| PID    Reference Object                     Distance      Geod. Az  |
 JV5677|                                                           dddmmss.s |
 JV5677| JV5267 LLOYD POINT FRONT RANGE LIGHT       APPROX. 3.6 KM 0590449.2 |
 JV5677| CA9892 ARMISTEAD RM                         52.632 METERS 07819     |
 JV5677| JV5676 BASE MONUMENT N USE 1915             85.790 METERS 24819     |
 JV5677| JV5682 BREWERTON CHANNEL REAR RNG LT       APPROX. 1.7 KM 2842953.3 |
 JV5677| JV5736 QUARANTINE                          APPROX. 1.8 KM 2981046.2 |
 JV5677| JV0957 ARMISTEAD RM 2                       41.805 METERS 35332     |
 JV5677|---------------------------------------------------------------------|
 JV5677
 JV5677                          SUPERSEDED SURVEY CONTROL
 JV5677
 JV5677  NAD 83(1986)-  39 12 35.64670(N)    076 31 58.84768(W) AD(       ) 2
 JV5677  NAD 27      -  39 12 35.25800(N)    076 31 59.98000(W) AD(       ) 2
 JV5677  USSD        -  39 12 35.61800(N)    076 31 59.81900(W) AD(       ) 3
 JV5677
 JV5677.Superseded values are not recommended for survey control.
 JV5677
 JV5677.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5677.See file dsdata.pdf to determine how the superseded data were derived.
 JV5677
 JV5677
 JV5677  HISTORY     - Date     Condition        Report By
 JV5677  HISTORY     - 1915     MONUMENTED       CGS
 JV5677  HISTORY     - 1924     GOOD             CGS
 JV5677  HISTORY     - 1934     SEE DESCRIPTION  CGS
 JV5677  HISTORY     - 1956     MARK NOT FOUND   AMS
 JV5677  HISTORY     - 1985     MARK NOT FOUND   USPSQD
 JV5677
 JV5677                          STATION DESCRIPTION
 JV5677
 JV5677'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5677'ON THE SW SIDE OF PATAPSCO RIVER, ON HAWKINS POINT, ON THE
 JV5677'GOVERNMENT RESERVATION (FORT ARMISTEAD), ON THE FIRST EMBANKMENT
 JV5677'ABOVE THE SEA WALL.  THE STATION MARK SET BY THE HARBOR BOARD IS
 JV5677'A CONCRETE MONUMENT WITH COPPER NAIL AS CENTER.  A STANDARD
 JV5677'DISK REFERENCE MARK WAS SET IN THE SEA WALL JUST BEYOND THE
 JV5677'SECOND BREAK IN THE WALL AFTER LEAVING THE DOCK.  IT IS 52.63
 JV5677'METERS (172.67 FEET) FROM THE STATION N 78 DEG 19 MIN E.
 JV5677
 JV5677                          STATION RECOVERY (1934)
 JV5677
 JV5677'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5677'THE STATION WAS RECOVERED IN GOOD CONDITION.
 JV5677'
 JV5677'THE ORIGINAL DESCRIPTION SHOULD BE REVISED TO READ AS FOLLOWS--
 JV5677'
 JV5677'ON THE SW SIDE OF PATAPSCO RIVER, ON HAWKINS POINT, AT FORT
 JV5677'ARMISTEAD.  FORT ARMISTEAD, FORMERLY OWNED BY THE GOVERNMENT IS
 JV5677'NOW THE PROPERTY OF THE CITY OF BALTIMORE AND IS UNDER THE
 JV5677'JURISDICTION OF THE PARK BOARD.
 JV5677'
 JV5677'THE STATION IS ON THE FIRST EMBANKMENT ABOVE THE SEA WALL AND ABOUT
 JV5677'MIDWAY BETWEEN THE SEA WALL AND THE CONCRETE FORTIFICATIONS.  THE
 JV5677'STATION SET BY THE HARBOR BOARD IS A CONCRETE MONUMENT WITH A
 JV5677'COPPER ROD AS CENTER.  THIS POINT OF LAND IS COVERED WITH TREES
 JV5677'APPROXIMATELY 30 FEET IN HEIGHT AND REQUIRES A TOWER.
 JV5677'
 JV5677'THE REMAINS OF THE REFERENCE MARK WERE FOUND IN THE CONCRETE SEA
 JV5677'WALL BUT THE DISK OF THE STANDARD MARK HAD BEEN CHISELED OFF
 JV5677'LEAVING ONLY THE SHANK OF THE REFERENCE MARK IN PLACE.
 JV5677'
 JV5677'A NEW REFERENCE MARK WAS PLACED IN THE CONCRETE SEA WALL NW OF
 JV5677'THE STATION.  THIS IS A STANDARD DISK STAMPED ARMISTEAD 1934 NO.2,
 JV5677'CEMENTED IN A DRILL HOLE IN THE TOP OF THE SEA WALL.  REFERENCE
 JV5677'MARK NO.2 IS W ALONG THE SEA WALL FROM THE ORIGINAL REFERENCE
 JV5677'MARK.
 JV5677
 JV5677                          STATION RECOVERY (1956)
 JV5677
 JV5677'RECOVERY NOTE BY US ARMY MAP SERVICE (NOW DMA) 1956
 JV5677'THE STATION WAS NOT RECOVERED.  THE REFERENCE MARKS ARE O.K.
 JV5677
 JV5677                          STATION RECOVERY (1985)
 JV5677
 JV5677'RECOVERY NOTE BY US POWER SQUADRON 1985 (WRB)
 JV5677'NATIONAL OCEAN SURVEY MARK LOCATED ON THE NORTH SIDE OF DOCK APPROX.
 JV5677'6 FEET - 0 INCHES INSCRIPTION.  NO-1 1975.
 JV5677'STATION ARMISTEAD COULD NOT BE LOCATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1251 ***********************************************************************
 JW1251  DESIGNATION -  ARNOLD
 JW1251  PID         -  JW1251
 JW1251  STATE/COUNTY-  MD/GARRETT
 JW1251  COUNTRY     -  US
 JW1251  USGS QUAD   -  MCHENRY (2016)
 JW1251
 JW1251                         *CURRENT SURVEY CONTROL
 JW1251  ______________________________________________________________________
 JW1251* NAD 83(1995) POSITION- 39 36 40.57656(N) 079 18 20.41331(W)   ADJUSTED
 JW1251* NAVD 88 ORTHO HEIGHT -   897.0   (meters)     2943.    (feet) VERTCON3
 JW1251  ______________________________________________________________________
 JW1251  GEOID HEIGHT    -        -31.340 (meters)                     GEOID18
 JW1251  LAPLACE CORR    -          0.46  (seconds)                    DEFLEC18
 JW1251  HORZ ORDER      -  FIRST
 JW1251
 JW1251.The horizontal coordinates were established by classical geodetic methods
 JW1251.and adjusted by the National Geodetic Survey in April 1998.
 JW1251
 JW1251.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1251.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1251
 JW1251.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1251.GEOID18 height accuracy estimate available here.
 JW1251
 JW1251.Click photographs - Photos may exist for this station.
 JW1251
 JW1251.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1251
 JW1251. The following values were computed from the NAD 83(1995) position.
 JW1251
 JW1251;                    North         East     Units Scale Factor Converg.
 JW1251;SPC MD       -   218,369.589   202,012.681   MT  1.00003219   -1 26 49.6
 JW1251;SPC MD       -   716,434.23    662,769.94   sFT  1.00003219   -1 26 49.6
 JW1251;UTM  17      - 4,385,984.953   645,448.245   MT  0.99986046   +1 04 49.6
 JW1251
 JW1251!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1251!SPC MD       -   0.99986421  x   1.00003219  =   0.99989640
 JW1251!UTM  17      -   0.99986421  x   0.99986046  =   0.99972469
 JW1251
 JW1251:                Primary Azimuth Mark                     Grid Az
 JW1251:SPC MD       -  THAYER                                   179 28 33.4
 JW1251:UTM  17      -  THAYER                                   176 56 54.2
 JW1251
 JW1251_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4544885984(NAD 83)
 JW1251
 JW1251|---------------------------------------------------------------------|
 JW1251| PID    Reference Object                     Distance      Geod. Az  |
 JW1251|                                                           dddmmss.s |
 JW1251| CX3157 ARNOLD RM 1                          22.588 METERS 04244     |
 JW1251| JW1250 THAYER                              APPROX.10.2 KM 1780143.8 |
 JW1251| JW1255 ELDER HILL LOT                      APPROX. 7.8 KM 2650352.0 |
 JW1251| JW1252 GEORGE                               15.034 METERS 33401     |
 JW1251|---------------------------------------------------------------------|
 JW1251
 JW1251                          SUPERSEDED SURVEY CONTROL
 JW1251
 JW1251  NAD 83(1991)-  39 36 40.57846(N)    079 18 20.41834(W) AD(       ) 1
 JW1251  NAD 83(1986)-  39 36 40.58385(N)    079 18 20.42228(W) AD(       ) 1
 JW1251  NAD 27      -  39 36 40.27172(N)    079 18 21.28653(W) AD(       ) 1
 JW1251  NGVD 29 (07/19/86)  897.1    (m)         2943.     (f) VERT ANG       
 JW1251
 JW1251.Superseded values are not recommended for survey control.
 JW1251
 JW1251.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1251.See file dsdata.pdf to determine how the superseded data were derived.
 JW1251
 JW1251_MARKER: DH = HORIZONTAL CONTROL DISK
 JW1251_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1251_STAMPING: ARNOLD 1975
 JW1251_MARK LOGO: NGS
 JW1251_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1251+STABILITY: SURFACE MOTION
 JW1251
 JW1251  HISTORY     - Date     Condition        Report By
 JW1251  HISTORY     - 1975     MONUMENTED       NGS
 JW1251
 JW1251                          STATION DESCRIPTION
 JW1251
 JW1251'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (JRS)
 JW1251'THE STATION IS LOCATED ABOUT 1-1/2 MILES SOUTHEAST OF ACCIDENT,
 JW1251'4-1/2 MILES WEST OF BITTINGER, 7-1/2 MILES SOUTH OF THE
 JW1251'PENNSYLVANIA-MARYLAND STATE LINE, 9 MILES EAST OF THE MARYLAND-
 JW1251'WEST VIRGINIA STATE LINE, ON TOP OF A HILL KNOWN LOCALLY AS
 JW1251'GEORGE HILL AND ON PROPERTY OWNED BY MR. ARNOLD C. GEORGE WHO
 JW1251'GAVE PERMISSION FOR THE STATION.
 JW1251'
 JW1251'TO REACH THE STATION FROM THE SCHOOLHOUSE IN ACCIDENT, MARYLAND,
 JW1251'GO NORTH ON U.S. HIGHWAY 219 FOR 0.1 MILE TO A PAVED CROSSROAD.
 JW1251'TURN RIGHT AND GO EASTERLY ON THE PAVED ROAD FOR 1.8 MILES TO THE
 JW1251'SUMMIT OF A GRADE AND A GRAVELED SIDE ROAD RIGHT.  TURN RIGHT AND
 JW1251'GO SOUTHWEST ON THE GRAVELED ROAD FOR 0.3 MILE TO A FORK, BEAR
 JW1251'RIGHT AND GO WESTERLY FOR 0.2 MILE TO A GATE.  PASS THROUGH THE
 JW1251'GATE, GO ABOUT 100 FEET THEN BEAR LEFT OFF THE GRAVELED ROAD
 JW1251'AND GO WESTERLY, UPHILL, FOR 0.15 MILE TO A PIPELINE CROSSING.
 JW1251'BEAR RIGHT AND GO WEST-NORTHWEST FOR 0.15 MILE TO THE STATION
 JW1251'ON THE LEFT.
 JW1251'
 JW1251'THE STATION MARKS ARE STANDARD DISKS STAMPED---ARNOLD 1975---.  THE
 JW1251'SURFACE DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE
 JW1251'MONUMENT THAT PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 118.0
 JW1251'FEET SOUTH OF A PIPELINE CROSSING, 23.8 FEET NORTHWEST OF A 20
 JW1251'INCH OAK TREE HAVING A TRIANGLE BLAZE ON ITS WEST SIDE AND 3.8
 JW1251'FEET EAST OF A WITNESS POST.  THE UNDERGROUND MARK IS CEMENTED
 JW1251'IN A DRILL HOLE IN BEDROCK.
 JW1251'
 JW1251'REFERENCE MARK 1 IS A STANDARD DISK STAMPED---ARNOLD NO 1 1975---,
 JW1251'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 JW1251'PROJECTS 12 INCHES ABOVE THE GROUND.  IT IS 40.0 FEET SOUTH OF
 JW1251'THE PIPELINE CROSSING, 23.6 FEET NORTHEAST OF THE OAK
 JW1251'TREE, 1.8 FEET WEST OF THE WITNESS POST AND ABOUT 2 FEET LOWER
 JW1251'THAN THE STATION.
 JW1251'
 JW1251'GEORGE USGS IS A BRONZE BENCH MARK DISK OF THE U.S. GEOLOGICAL
 JW1251'SURVEY, STAMPED---GEORGE 1956---, CEMENTED IN A DRILL HOLE IN THE
 JW1251'TOP OF A 1 BY 2 FOOT BOULDER THAT PROJECTS 6 INCHES ABOVE THE
 JW1251'GROUND.  IT IS 89.8 FEET SOUTH OF THE PIPELINE CROSSING, 48.3
 JW1251'FEET NORTHWEST OF THE WITNESS POST NEAR THE STATION,
 JW1251'20.6 FEET NORTHWEST OF THE TREE, AND IS ABOUT THE SAME
 JW1251'ELEVATION AS THE STATION.
 JW1251'
 JW1251'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
 JW1251'HEIGHT OF LIGHT ABOVE MARK 22.2 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5752 ***********************************************************************
 JV5752  DESIGNATION -  ARNOLD
 JV5752  PID         -  JV5752
 JV5752  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5752  COUNTRY     -  US
 JV5752  USGS QUAD   -  ROUND BAY (2016)
 JV5752
 JV5752                         *CURRENT SURVEY CONTROL
 JV5752  ______________________________________________________________________
 JV5752* NAD 83(1991) POSITION- 39 02 10.42444(N) 076 32 02.67383(W)   ADJUSTED
 JV5752* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5752  ______________________________________________________________________
 JV5752  GEOID HEIGHT    -        -33.167 (meters)                     GEOID18
 JV5752  LAPLACE CORR    -         -4.08  (seconds)                    DEFLEC18
 JV5752  HORZ ORDER      -  THIRD
 JV5752
 JV5752.The horizontal coordinates were established by classical geodetic methods
 JV5752.and adjusted by the National Geodetic Survey in January 1992.
 JV5752
 JV5752.The orthometric height was scaled from a topographic map.
 JV5752
 JV5752.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5752.GEOID18 height accuracy estimate available here.
 JV5752
 JV5752.Click photographs - Photos may exist for this station.
 JV5752
 JV5752.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5752
 JV5752. The following values were computed from the NAD 83(1991) position.
 JV5752
 JV5752;                    North         East     Units Scale Factor Converg.
 JV5752;SPC MD       -   152,130.954   440,338.684   MT  0.99995376   +0 17 32.7
 JV5752;SPC MD       -   499,116.30  1,444,677.83   sFT  0.99995376   +0 17 32.7
 JV5752;UTM  18      - 4,321,916.600   367,226.117   MT  0.99981707   -0 57 58.8
 JV5752
 JV5752!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5752!SPC MD       -   1.00000509  x   0.99995376  =   0.99995885
 JV5752!UTM  18      -   1.00000509  x   0.99981707  =   0.99982215
 JV5752
 JV5752:                Primary Azimuth Mark                     Grid Az
 JV5752:SPC MD       -  LONG                                     296 05 39.6
 JV5752:UTM  18      -  LONG                                     297 21 11.1
 JV5752
 JV5752_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6722621916(NAD 83)
 JV5752
 JV5752|---------------------------------------------------------------------|
 JV5752| PID    Reference Object                     Distance      Geod. Az  |
 JV5752|                                                           dddmmss.s |
 JV5752| JV5773 LONG                                APPROX. 2.2 KM 2962312.3 |
 JV5752| CA9893 ARNOLD RM                             3.750 METERS 34049     |
 JV5752|---------------------------------------------------------------------|
 JV5752
 JV5752                          SUPERSEDED SURVEY CONTROL
 JV5752
 JV5752  NAD 83(1986)-  39 02 10.42095(N)    076 32 02.68467(W) AD(       ) 3
 JV5752  NAD 27      -  39 02 10.02400(N)    076 32 03.82300(W) AD(       ) 3
 JV5752  USSD        -  39 02 10.37100(N)    076 32 03.67400(W) AD(       ) 3
 JV5752
 JV5752.Superseded values are not recommended for survey control.
 JV5752
 JV5752.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5752.See file dsdata.pdf to determine how the superseded data were derived.
 JV5752
 JV5752
 JV5752  HISTORY     - Date     Condition        Report By
 JV5752  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5752  HISTORY     - 1906     GOOD             CGS
 JV5752  HISTORY     - 1961     GOOD             CGS
 JV5752
 JV5752                          STATION DESCRIPTION
 JV5752
 JV5752'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5752'ON THE NE SHORE OF SEVERN RIVER, ON ARNOLD POINT, ON NW SIDE OF
 JV5752'ENTRANCE TO AISQUITH CREEK AND 1/2 MILE N OF BREWER POINT, AT
 JV5752'THE FOOT OF THE SLOPE MEETING A LONG, NARROW NECK OF LAND
 JV5752'EXTENDING ABOUT 200 YARDS SE OF THE STATION.  STATION IS 3 FEET
 JV5752'ABOVE AND 12 FEET BACK FROM HIGH-WATER LINE.  A SMALL HOLLY TREE
 JV5752'STANDS ABOUT 15 FEET E OF STATION.  STATION MARKED BY NAIL IN
 JV5752'STUB WITH TOP 3 INCHES BELOW SURFACE OF GROUND.  THE STUB IS
 JV5752'INSIDE A 4-INCH TILE PIPE WITH TOP 1 FOOT BELOW SURFACE.
 JV5752'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 JV5752'A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 JV5752'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 JV5752'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 JV5752'COUNTER-SUNK IN TOP OF POST.  IT IS 3.75 METERS (12.30 FEET) FROM
 JV5752'STATION N 19 DEG 11 MIN W.  DISTANCES AND
 JV5752'BEARINGS FROM THE STATION TO OTHER POINTS OF REFERENCE ARE AS
 JV5752'FOLLOWS--CENTER OF COTTAGE ON LONG POINT, 1-1/2 MILES, N 63 DEG
 JV5752'20 MIN W.  NAIL IN BLAZE IN 10-INCH CEDAR TREE, 5.96 METERS
 JV5752'(19.55 FEET), N 47 DEG 31 MIN W.  NW CORNER OF SMALL HOUSE UP
 JV5752'AISQUITH CREEK, 1/2 MILE, N 69 DEG 02 MIN E.  NAIL IN BLAZE IN
 JV5752'4-INCH LOCUST TREE, 8.31 METERS (27.26 FEET), S 72 DEG 55
 JV5752'MIN E.  CHIMNEY ON YELLOW HOUSE ON OPPOSITE SHORE, 1 MILE, S 8
 JV5752'DEG 19 MIN E.
 JV5752
 JV5752                          STATION RECOVERY (1961)
 JV5752
 JV5752'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5752'STATION WAS RECOVERED IN GOOD CONDITION.  THE DESCRIPTION BY
 JV5752'G.L.F. IN 1903 IS ADEQUATE AND COMPLETE, EXCEPT THAT THE HOLLY
 JV5752'TREE IS GONE.  THE STATION IS 6 FT. SW OF A TWO FT. OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9264 ***********************************************************************
 HV9264  PACS        -  This is a Primary Airport Control Station.
 HV9264  DESIGNATION -  ARP ADW
 HV9264  PID         -  HV9264
 HV9264  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9264  COUNTRY     -  US
 HV9264  USGS QUAD   -  UPPER MARLBORO (2016)
 HV9264
 HV9264                         *CURRENT SURVEY CONTROL
 HV9264  ______________________________________________________________________
 HV9264* NAD 83(2011) POSITION- 38 48 39.62872(N) 076 52 01.14029(W)   ADJUSTED
 HV9264* NAD 83(2011) ELLIP HT-    49.142 (meters)        (06/27/12)   ADJUSTED
 HV9264* NAD 83(2011) EPOCH   -  2010.00
 HV9264* NAVD 88 ORTHO HEIGHT -    81.726 (meters)      268.13  (feet) ADJUSTED
 HV9264  ______________________________________________________________________
 HV9264  GEOID HEIGHT    -        -32.566 (meters)                     GEOID18
 HV9264  NAD 83(2011) X  -  1,130,732.724 (meters)                     COMP
 HV9264  NAD 83(2011) Y  - -4,846,381.820 (meters)                     COMP
 HV9264  NAD 83(2011) Z  -  3,976,021.010 (meters)                     COMP
 HV9264  LAPLACE CORR    -         -5.30  (seconds)                    DEFLEC18
 HV9264  DYNAMIC HEIGHT  -         81.681 (meters)      267.98  (feet) COMP
 HV9264  MODELED GRAVITY -    980,068.7   (mgal)                       NAVD 88
 HV9264
 HV9264  VERT ORDER      -  FIRST     CLASS II
 HV9264
 HV9264  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9264  Standards:
 HV9264         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9264            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9264  -------------------------------------------------------------------
 HV9264  NETWORK    1.16   2.27           0.52   0.39   1.16      0.39485892
 HV9264  -------------------------------------------------------------------
 HV9264  Click here for local accuracies and other accuracy information.
 HV9264
 HV9264.This mark is at Andrews Afb Airport (ADW)
 HV9264
 HV9264.The horizontal coordinates were established by GPS observations
 HV9264.and adjusted by the National Geodetic Survey in June 2012.
 HV9264
 HV9264.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9264.been affixed to the stable North American tectonic plate. See 
 HV9264.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9264
 HV9264.The horizontal coordinates are valid at the epoch date displayed above
 HV9264.which is a decimal equivalence of Year/Month/Day.
 HV9264
 HV9264.The orthometric height was determined by differential leveling and
 HV9264.adjusted by the NATIONAL GEODETIC SURVEY
 HV9264.in August 1994.
 HV9264
 HV9264.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9264.GEOID18 height accuracy estimate available here.
 HV9264
 HV9264.Click photographs - Photos may exist for this station.
 HV9264
 HV9264.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9264
 HV9264.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9264
 HV9264.The ellipsoidal height was determined by GPS observations
 HV9264.and is referenced to NAD 83.
 HV9264
 HV9264.The dynamic height is computed by dividing the NAVD 88
 HV9264.geopotential number by the normal gravity value computed on the
 HV9264.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9264.degrees latitude (g = 980.6199 gals.).
 HV9264
 HV9264.The modeled gravity was interpolated from observed gravity values.
 HV9264
 HV9264. The following values were computed from the NAD 83(2011) position.
 HV9264
 HV9264;                    North         East     Units Scale Factor Converg.
 HV9264;SPC MD       -   127,034.965   411,552.763   MT  0.99995048   +0 05 00.5
 HV9264;SPC MD       -   416,780.55  1,350,236.02   sFT  0.99995048   +0 05 00.5
 HV9264;UTM  18      - 4,297,459.876   337,899.226   MT  0.99992358   -1 10 13.4
 HV9264
 HV9264!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9264!SPC MD       -   0.99999229  x   0.99995048  =   0.99994277
 HV9264!UTM  18      -   0.99999229  x   0.99992358  =   0.99991587
 HV9264
 HV9264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3789997459(NAD 83)
 HV9264
 HV9264                          SUPERSEDED SURVEY CONTROL
 HV9264
 HV9264  NAD 83(2007)-  38 48 39.62895(N)    076 52 01.14103(W) AD(2002.00) 0
 HV9264  ELLIP H (02/10/07)   49.158  (m)                       GP(2002.00)    
 HV9264  ELLIP H (08/09/02)   49.167  (m)                       GP(       ) 4 2
 HV9264  NAD 83(1991)-  38 48 39.63000(N)    076 52 01.14087(W) AD(       ) B
 HV9264  ELLIP H (03/24/98)   49.238  (m)                       GP(       ) 4 1
 HV9264  NAD 83(1993)-  38 48 39.63000(N)    076 52 01.14083(W) AD(       ) B
 HV9264  ELLIP H (11/22/95)   49.238  (m)                       GP(       ) 1 1
 HV9264  NAD 83(1991)-  38 48 39.62971(N)    076 52 01.14146(W) AD(       ) 1
 HV9264  ELLIP H (01/15/92)   49.147  (m)                       GP(       ) 3 2
 HV9264  NAVD 88              81.73   (m)          268.1    (f) LEVELING    3  
 HV9264  NGVD 29              82.04   (m)          269.2    (f) LEVELING    3  
 HV9264
 HV9264.Superseded values are not recommended for survey control.
 HV9264
 HV9264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9264.See file dsdata.pdf to determine how the superseded data were derived.
 HV9264
 HV9264_MARKER: DT = TOPOGRAPHIC STATION DISK
 HV9264_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9264_STAMPING: ARP ADW 1968
 HV9264_MARK LOGO: CGS
 HV9264_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV9264_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9264+STABILITY: SURFACE MOTION
 HV9264_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9264+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2024
 HV9264
 HV9264  HISTORY     - Date     Condition        Report By
 HV9264  HISTORY     - 1968     MONUMENTED       CGS
 HV9264  HISTORY     - 19880615 GOOD             NGS
 HV9264  HISTORY     - 19920713 GOOD
 HV9264  HISTORY     - 19940725 GOOD             NGS
 HV9264  HISTORY     - 19941018 GOOD             NGS
 HV9264  HISTORY     - 19991202 GOOD             NGS
 HV9264  HISTORY     - 20241215 GOOD             DEI
 HV9264
 HV9264                          STATION DESCRIPTION
 HV9264
 HV9264'DESCRIBED BY COAST AND GEODETIC SURVEY 1968
 HV9264'THE STATION IS LOCATED NEAR THE GEOMETRIC CENTER OF THE AIRFIELD OF
 HV9264'ANDREWS AIR FORCE BASE, APPROXIMATELY 6 MILES SE OF WASHINGTON
 HV9264'D.C., 1 MI (1.61 KM) EAST OF CAMP SPRINGS, MD., AND 1 MI (1.61 KM)
 HV9264'NORTH OF JENKINS CORNER, MD.
 HV9264'TO REACH THE STATION FROM THE INTERCHANGE OF INTERSTATE 95 (CAPITAL
 HV9264'BELTWAY) AND STATE ROUTE 5, PROCEED EAST ON INTERSTATE 95,
 HV9264'APPROXIMATELY 2 MI (3.22 KM) TO AIRFORCE BASE VISITORS CENTER ON
 HV9264'RIGHT. AT THE VISITORS CENTER CONTACT THE AIRFIELD MANAGER BY PHONE
 HV9264'NUMBER 301-981-3415 FOR PERMISSION TO ACCESS THE STATION.
 HV9264'THE STATION IS ABOUT 510 FEET NORTH OF THE NORTH EDGE OF THE CENTER
 HV9264'EAST-WEST TAXIWAY, AT THE SOUTH END OF THE CENTER NORTH-SOUTH TAXIWAY,
 HV9264'190.2 FEET NORTH OF THE NORTH CORNER OF A 4X4 FEET MANHOLE, 149.1 FEET
 HV9264'SOUTH OF THE SOUTH EDGE OF A BLACKTOP ROAD LEADING TO A PAR SITE AND
 HV9264'38.0 FEET EAST OF THE EDGE OF THE CONCRETE TAXIWAY.
 HV9264'THE STATION IS A STANDARD SURVEY DISK STAMPED ARP ADW 1968 SET IN THE
 HV9264'TOP OF A CONCRETE MONUMENT FLUSH WITH THE GROUND.
 HV9264
 HV9264                          STATION RECOVERY (1988)
 HV9264
 HV9264'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HV9264'LOCATED AT THE ANDREWS AIR FORCE BASE NEAR THE GEOMETRIC CENTER OF THE
 HV9264'FIELD, ABOUT 510 FT (155.4 M) N OF THE N EDGE OF THE CENTER E-W
 HV9264'TAXIWAY, AT THE S END OF THE CENTER N-S TAXIWAY, 190.2 FT (58.0 M) N
 HV9264'OF THE N CORNER OF A 4FT X 4FT MANHOLE, 149.1 FT (45.4 M) S OF THE S
 HV9264'EDGE OF A BACKTOP ROAD LEADING TO A PAR SITE AND 38.0 FT (11.6 M) E OF
 HV9264'THE E EDGE OF THE CONCRETE TAXIWAY.  A STANDARD TOPO DISK STAMPED ARP
 HV9264'ADW 1968 SET IN THE TOP OF A CONCRETE MONUMENT ABOUT FLUSH WITH THE
 HV9264'GROUND.
 HV9264
 HV9264                          STATION RECOVERY (1992)
 HV9264
 HV9264'RECOVERED 1992
 HV9264'RECOVERED IN GOOD CONDITION.
 HV9264
 HV9264                          STATION RECOVERY (1994)
 HV9264
 HV9264'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994
 HV9264'RECOVERED IN GOOD CONDITION. NOTE - THE DISK IS A STANDARD TOPO DISK
 HV9264'SET IN THE TOP OF A CONCRETE MONUMENT FLUSH WITH THE GROUND. THE DISK
 HV9264'HAS BEEN DAMAGED.  THE CENTER OF THE DISK IS NOT THE HIGH POINT.  THE
 HV9264'ROD WAS HELD ON THE LETTERS OF IC S OF GEODETIC SURVEY.
 HV9264
 HV9264                          STATION RECOVERY (1994)
 HV9264
 HV9264'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 HV9264'RECOVERED AS DESCRIBED.
 HV9264
 HV9264                          STATION RECOVERY (1999)
 HV9264
 HV9264'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (AJL)
 HV9264'THE STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) SOUTHEAST OF WASHINGTON
 HV9264'DC, 1.0 MI (1.6 KM) EAST OF CAMP SPRINGS MD AND ON ANDREWS AIR FORCE
 HV9264'BASE NEAR THE CENTER OF THE AIRFIELD ABOUT 0.1MI SOUTH OF THE ASR.
 HV9264'OWNERSHIP--US AIR FORCE, CONTACT OPERATIONS MANAGER, CAPTAIN DALE
 HV9264'HOLLAND, BLDG 1220, MENOHER DRIVE, ANDREWS AFB, MD 20762.  PHONE
 HV9264'301-981-3411.  PERMISSION IS REQUIRED TO OCCUPY THIS STATION.  TO
 HV9264'REACH THE STATION FROM THE GATE AT THE OPERATIONS BUILDING ON THE WEST
 HV9264'RAMP (JUST NORTH OF THE TOWER) GO NORTHWEST ACROSS THE APRON FOR 0.3
 HV9264'MI (0.5 KM) TO A NORTH-SOUTH APRON EDGE TAXIWAY (W) AND A TAXIWAY (C)
 HV9264'LEADING TO THE EAST, BEAR RIGHT AND GO EAST ON TAXIWAY (C) FOR 0.3 MI
 HV9264'(0.5 KM) CROSSING RUNWAY 01R-19L TO A PAVED ROAD LEFT, TURN LEFT AND
 HV9264'GO NORTH ON NAVAID ROAD (ASPHALT) FOR 0.2 MI (0.3 KM) TO WERE THE ROAD
 HV9264'BECOMES CONCRETE AND THE STATION ON THE RIGHT.  THE STATION IS FLUSH
 HV9264'WITH THE GROUND, 510.0 FT (155.4 M) NORTH OF THE NORTH EDGE OF THE
 HV9264'TAXIWAY (C) , 190.2 FT (58.0 M) NORTH OF THE NORTH CORNER OF A 4 FT
 HV9264'(1.2 M) X 4 FT (1.2 M) MANHOLE, 149.1 FT (45.4 M) SOUTH OF THE SOUTH
 HV9264'EDGE OF A ASPHALT ROAD LEADING TO THE OLD PAR SITE AND 38.0 FT (11.6
 HV9264'M) EAST OF THE EAST EDGE OF THE CONCRETE NAVAID ROAD.  THIS IS THE
 HV9264'PRIMARY AIRPORT CONTROL STATION (PACS) .
 HV9264
 HV9264                          STATION RECOVERY (2024)
 HV9264
 HV9264'RECOVERY NOTE BY DEWBERRY ENGINEERING INC. 2024 (GS)
 HV9264'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2822 ***********************************************************************
 HU2822  PACS        -  This is a Primary Airport Control Station.
 HU2822  DESIGNATION -  ARP SBY
 HU2822  PID         -  HU2822
 HU2822  STATE/COUNTY-  MD/WICOMICO
 HU2822  COUNTRY     -  US
 HU2822  USGS QUAD   -  SALISBURY (2016)
 HU2822
 HU2822                         *CURRENT SURVEY CONTROL
 HU2822  ______________________________________________________________________
 HU2822* NAD 83(2011) POSITION- 38 20 21.75282(N) 075 30 39.93348(W)   ADJUSTED
 HU2822* NAD 83(2011) ELLIP HT-   -22.013 (meters)        (06/27/12)   ADJUSTED
 HU2822* NAD 83(2011) EPOCH   -  2010.00
 HU2822* NAVD 88 ORTHO HEIGHT -    13.95  (meters)       45.8   (feet) GPS OBS
 HU2822  ______________________________________________________________________
 HU2822  NAVD 88 orthometric height was determined with geoid model    GEOID96
 HU2822  GEOID HEIGHT    -        -35.912 (meters)                     GEOID96
 HU2822  GEOID HEIGHT    -        -35.917 (meters)                     GEOID18
 HU2822  NAD 83(2011) X  -  1,253,247.558 (meters)                     COMP
 HU2822  NAD 83(2011) Y  - -4,849,821.986 (meters)                     COMP
 HU2822  NAD 83(2011) Z  -  3,935,046.296 (meters)                     COMP
 HU2822  LAPLACE CORR    -         -1.15  (seconds)                    DEFLEC18
 HU2822
 HU2822  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2822  Standards:
 HU2822         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2822            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2822  -------------------------------------------------------------------
 HU2822  NETWORK    1.52   2.69           0.45   0.72   1.37      0.22545089
 HU2822  -------------------------------------------------------------------
 HU2822  Click here for local accuracies and other accuracy information.
 HU2822
 HU2822.This mark is at Salisbury-Wicomico Co Regional Airport (SBY)
 HU2822
 HU2822.The horizontal coordinates were established by GPS observations
 HU2822.and adjusted by the National Geodetic Survey in June 2012.
 HU2822
 HU2822.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2822.been affixed to the stable North American tectonic plate. See 
 HU2822.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2822
 HU2822.The horizontal coordinates are valid at the epoch date displayed above
 HU2822.which is a decimal equivalence of Year/Month/Day.
 HU2822
 HU2822.The orthometric height was determined by GPS observations and a
 HU2822.high-resolution geoid model.
 HU2822
 HU2822.GPS derived orthometric heights for airport stations designated as
 HU2822.PACS or SACS are published to 2 decimal places.  This maintains
 HU2822.centimeter relative accuracy between the PACS and SACS.  It does
 HU2822.not indicate centimeter accuracy relative to other marks which are
 HU2822.part of the published vertical control network.
 HU2822
 HU2822.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2822.GEOID18 height accuracy estimate available here.
 HU2822
 HU2822.Click photographs - Photos may exist for this station.
 HU2822
 HU2822.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2822
 HU2822.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2822
 HU2822.The ellipsoidal height was determined by GPS observations
 HU2822.and is referenced to NAD 83.
 HU2822
 HU2822. The following values were computed from the NAD 83(2011) position.
 HU2822
 HU2822;                    North         East     Units Scale Factor Converg.
 HU2822;SPC MD       -    75,735.147   530,162.801   MT  0.99999338   +0 56 04.2
 HU2822;SPC MD       -   248,474.39  1,739,375.79   sFT  0.99999338   +0 56 04.2
 HU2822;UTM  18      - 4,243,594.135   455,334.876   MT  0.99962457   -0 19 01.4
 HU2822
 HU2822!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2822!SPC MD       -   1.00000345  x   0.99999338  =   0.99999683
 HU2822!UTM  18      -   1.00000345  x   0.99962457  =   0.99962802
 HU2822
 HU2822_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5533443594(NAD 83)
 HU2822
 HU2822                          SUPERSEDED SURVEY CONTROL
 HU2822
 HU2822  NAD 83(2007)-  38 20 21.75313(N)    075 30 39.93489(W) AD(2002.00) 0
 HU2822  ELLIP H (02/10/07)  -21.976  (m)                       GP(2002.00)    
 HU2822  ELLIP H (08/09/02)  -21.968  (m)                       GP(       ) 4 2
 HU2822  NAD 83(1991)-  38 20 21.75421(N)    075 30 39.93470(W) AD(       ) B
 HU2822  ELLIP H (03/24/98)  -21.901  (m)                       GP(       ) 4 1
 HU2822  NAD 83(1993)-  38 20 21.75421(N)    075 30 39.93466(W) AD(       ) B
 HU2822  ELLIP H (11/22/95)  -21.901  (m)                       GP(       ) 1 1
 HU2822  NAD 83(1991)-  38 20 21.75250(N)    075 30 39.93365(W) AD(       ) 1
 HU2822  ELLIP H (01/15/92)  -21.939  (m)                       GP(       ) 4 2
 HU2822  NAVD 88 (11/22/95)   13.94   (m)  GEOID93  model used  GPS OBS        
 HU2822  NGVD 29              14.15   (m)           46.4    (f) LEVELING    3  
 HU2822
 HU2822.Superseded values are not recommended for survey control.
 HU2822
 HU2822.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2822.See file dsdata.pdf to determine how the superseded data were derived.
 HU2822
 HU2822_MARKER: DT = TOPOGRAPHIC STATION DISK
 HU2822_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2822_STAMPING: ARP 1967
 HU2822_MARK LOGO: CGS
 HU2822_PROJECTION: FLUSH
 HU2822_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2822_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2822+STABILITY: SURFACE MOTION
 HU2822_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2822+SATELLITE: SATELLITE OBSERVATIONS - September 19, 1996
 HU2822
 HU2822  HISTORY     - Date     Condition        Report By
 HU2822  HISTORY     - 1967     MONUMENTED       CGS
 HU2822  HISTORY     - 19920615 GOOD             NGS
 HU2822  HISTORY     - 19920806 GOOD
 HU2822  HISTORY     - 19940816 GOOD             NOS
 HU2822  HISTORY     - 19960919 GOOD             NGS
 HU2822  HISTORY     - 19970701 GOOD             DMW
 HU2822  HISTORY     - 20000308 MARK NOT FOUND   NGS
 HU2822
 HU2822                          STATION DESCRIPTION
 HU2822
 HU2822'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 HU2822'THE STATION IS LOCATED ON THE SALISBURY WICOMICO AIRPORT NEAR THE
 HU2822'CENTER OF THE FIELD.
 HU2822'TO REACH THE AIRPORT FROM THE INTERSECTION OF U.S. 13 AND BYPASS U.S.
 HU2822'13 ON THE NORTH SIDE OF SALISBURY. GO SOUTHEAST ON BYPASS 13 FOR 3.0
 HU2822'MI (4.8 KM) TO THE  SECOND EXIT FOR U.S. 50, TAKE SECOND EXIT (50
 HU2822'EAST) AND GO 2.3 MI (3.7 KM) TO A CROSSROAD (WALSTON SWITCH RD). TURN
 HU2822'RIGHT AND GO SOUTH FOR 1.7 MI (2.7 KM) TO A CROSSROAD CONTINUE AHEAD
 HU2822'(SOUTH) FOR 0.9 MI (1.4 KM) TO A T INTERSECTION. TURN LEFT AND GO
 HU2822'SOUTHEAST FOR 0.4 MI (0.6 KM) TO A ROAD LEFT WHICH LEADS TO THE
 HU2822'TERMINAL. TURN LEFT AND GO 0.2 MI (0.3 KM) TO THE SALISBURY WICOMICO
 HU2822'COUNTY AIRPORT AUTHORITY BUILDING AND FBO.
 HU2822'THE STATION IS A STANDARD NOS DISK STAMPED---ARP 1967--- WHICH IS SET
 HU2822'IN THE TOP OF A CONCRETE POST THAT IS FLUSH WITH THE GROUND. THE
 HU2822'STATION IS 247.2 FT (75.3 M) SOUTHWEST OF THE 2ND RUNWAY LIGHT SOUTH
 HU2822'OF THE TAXIWAY PARALLEL TO RUNWAY 14-32, 188.7 FT (57.5 M) NORTHEAST
 HU2822'OF THE 4TH RUNWAY LIGHT SOUTH OF TAXIWAY, 81.5 FT (24.8 M) SOUTHEAST
 HU2822'OF THE SOUTHEAST EDGE OF RUNWAY 5-23, AND 78.4 FT (23.9 M) SOUTH OF
 HU2822'THE 3RD RUNWAY LIGHT SOUTH OF THE TAXIWAY.
 HU2822
 HU2822                          STATION RECOVERY (1992)
 HU2822
 HU2822'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 HU2822'STATION IS LOCATED ON THE SAILSBURY WICOMICO AIRPORT NEAR THE CENTER
 HU2822'OF THE FIELD.  81.5 FT (24.8 M) SE OF THE SE EDGE OF RUNWAY 5-23,
 HU2822'247.2 FT (75.3 M) SW OF 2ND RUNWAY LT.  S OF TAXIWAY PARALLEL WITH
 HU2822'RUNWAY 14-32, 188.7 FT (57.5 M) NE OF 4TH RUNWAY LT S OF TAXIWAY, AND
 HU2822'78.4 FT (23.9 M) S OF 3RD RUNWAY LT S OF TAXIWAY.  STATION IS A
 HU2822'STANDARD TOPO DISK SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 HU2822'GROUND AND STAMPED ARP 1967.
 HU2822
 HU2822                          STATION RECOVERY (1992)
 HU2822
 HU2822'RECOVERED 1992
 HU2822'RECOVERED IN GOOD CONDITION.
 HU2822
 HU2822                          STATION RECOVERY (1994)
 HU2822
 HU2822'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1994 (JDR)
 HU2822'RECOVERED AS DESCRIBED.
 HU2822
 HU2822                          STATION RECOVERY (1996)
 HU2822
 HU2822'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 HU2822'THE STATION IS LOCATED 5.0 MI (8.0 KM) EAST-SOUTHEAST OF SALISBURY,
 HU2822'2.5 MI (4.0 KM) SOUTH OF US HIGHWAY 50 AND AT THE SALISBURY WICOMICO
 HU2822'COUNTY AIRPORT IN THE NORTH PART OF A GRASS TRIANGLE FORMED BY RUNWAY
 HU2822'5-23, TAXIWAY A AND TAXIWAY E AND NEAR THE CENTER OF THE AIRPORT.
 HU2822'OWNERSHIP--WICOMICO COUNTY, AIRPORT MANAGER IS ROBERT L.  BRYANT, 5485
 HU2822'AIRPORT TERMINAL ROAD, UNIT A, SALISBURY, MD 21804-1545.  PHONE (410)
 HU2822'548-4827.  THIS IS A CONTROLLED AIRFIELD AND PERMISSION IS REQUIRED TO
 HU2822'ENTER. TO REACH THE STATION FROM THE JUNCTION OF US HIGHWAY 50 AND US
 HU2822'HIGHWAY 13 BYPASS ON THE EAST SIDE OF SALISBURY, GO EAST ON US HIGHWAY
 HU2822'50 FOR 2.3 MI (3.7 KM) TO A INTERSECTION, TURN RIGHT AND GO SOUTH ON A
 HU2822'PAVED ROAD (WALSTON SWITCH ROAD) FOR 1.5 MI (2.4 KM) TO A
 HU2822'INTERSECTION, CONTINUE AHEAD AND GO SOUTHERLY ON A PAVED ROAD FOR 0.9
 HU2822'MI (1.4 KM) TO A T-JUNCTION, TURN LEFT AND GO SOUTHERLY ON A PAVED
 HU2822'ROAD (AIRPORT ROAD) FOR 0.9 MI (1.4 KM) TO A PAVED ROAD AND PARKING
 HU2822'LOT ON THE LEFT (BAYLAND AVIATION) , TURN LEFT AND GO EAST ON THE
 HU2822'PAVED ROAD FOR 0.1 MI (0.2 KM) TO A GATE AHEAD, PASS THROUGH GATE,
 HU2822'BEAR SLIGHTLY TO THE RIGHT AND GO SOUTHEAST ON A TAXIWAY (C) FOR 0.2
 HU2822'MI (0.3 KM) TO THE APPROACH END OF RUNWAY 5, TURN LEFT AND GO
 HU2822'NORTHEAST ON RUNWAY 5-23 FOR 0.55 MI (0.89 KM) TO THE STATION ON THE
 HU2822'RIGHT. THE STATION IS FLUSH WITH THE GROUND, 247.2 FT (75.3 M)
 HU2822'SOUTHWEST OF THE 2ND RUNWAY LIGHT SOUTHWEST OF THE TAXIWAY (A)
 HU2822'PARALLEL TO RUNWAY 14-32, 188.7 FT (57.5 M) NORTHEAST OF THE 4TH
 HU2822'RUNWAY LIGHT SOUTH OF THE TAXIWAY, 81.5 FT (24.8 M) SOUTHEAST OF THE
 HU2822'SOUTHEAST EDGE OF RUNWAY 5-23 AND 78.4 FT (23.9 M) SOUTH OF THE THIRD
 HU2822'RUNWAY LIGHT SOUTH OF THE TAXIWAY. THIS STATION IS THE PRIMARY AIRPORT
 HU2822'CONTROL STATION.
 HU2822
 HU2822                          STATION RECOVERY (1997)
 HU2822
 HU2822'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 HU2822'RECOVERED AS DESCRIBED.
 HU2822
 HU2822                          STATION RECOVERY (2000)
 HU2822
 HU2822'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (ED)
 HU2822'MARK REPORTED DESTROYED BY AIRPORT AUTHORITY DURING AIRPORT
 HU2822'CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6196 ***********************************************************************
 DN6196  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6196  DESIGNATION -  ARROWHEAD
 DN6196  PID         -  DN6196
 DN6196  STATE/COUNTY-  MD/CECIL
 DN6196  COUNTRY     -  US
 DN6196  USGS QUAD   -  BAY VIEW (2016)
 DN6196
 DN6196                         *CURRENT SURVEY CONTROL
 DN6196  ______________________________________________________________________
 DN6196* NAD 83(2011) POSITION- 39 40 02.69269(N) 075 54 11.69295(W)   ADJUSTED
 DN6196* NAD 83(2011) ELLIP HT-    76.481 (meters)        (06/27/12)   ADJUSTED
 DN6196* NAD 83(2011) EPOCH   -  2010.00
 DN6196* NAVD 88 ORTHO HEIGHT -   109.54  (meters)      359.4   (feet) GPS OBS
 DN6196  ______________________________________________________________________
 DN6196  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6196  GEOID HEIGHT    -        -33.038 (meters)                     GEOID03
 DN6196  GEOID HEIGHT    -        -33.056 (meters)                     GEOID18
 DN6196  NAD 83(2011) X  -  1,197,443.583 (meters)                     COMP
 DN6196  NAD 83(2011) Y  - -4,768,366.774 (meters)                     COMP
 DN6196  NAD 83(2011) Z  -  4,049,677.606 (meters)                     COMP
 DN6196  LAPLACE CORR    -         -0.54  (seconds)                    DEFLEC18
 DN6196
 DN6196  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6196  Standards:
 DN6196         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6196            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6196  -------------------------------------------------------------------
 DN6196  NETWORK    0.64   1.14           0.30   0.20   0.58      0.07120837
 DN6196  -------------------------------------------------------------------
 DN6196  Click here for local accuracies and other accuracy information.
 DN6196
 DN6196.The horizontal coordinates were established by GPS observations
 DN6196.and adjusted by the National Geodetic Survey in June 2012.
 DN6196
 DN6196.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6196.been affixed to the stable North American tectonic plate. See 
 DN6196.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6196
 DN6196.The horizontal coordinates are valid at the epoch date displayed above
 DN6196.which is a decimal equivalence of Year/Month/Day.
 DN6196
 DN6196.The orthometric height was determined by GPS observations and a
 DN6196.high-resolution geoid model using precise GPS observation and
 DN6196.processing techniques.
 DN6196
 DN6196.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6196.GEOID18 height accuracy estimate available here.
 DN6196
 DN6196.Click photographs - Photos may exist for this station.
 DN6196
 DN6196.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6196
 DN6196.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6196
 DN6196.The ellipsoidal height was determined by GPS observations
 DN6196.and is referenced to NAD 83.
 DN6196
 DN6196. The following values were computed from the NAD 83(2011) position.
 DN6196
 DN6196;                    North         East     Units Scale Factor Converg.
 DN6196;SPC MD       -   222,668.224   494,110.665   MT  1.00004527   +0 41 18.1
 DN6196;SPC MD       -   730,537.33  1,621,094.74   sFT  1.00004527   +0 41 18.1
 DN6196;UTM  18      - 4,391,234.390   422,525.665   MT  0.99967390   -0 34 35.8
 DN6196
 DN6196!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6196!SPC MD       -   0.99998800  x   1.00004527  =   1.00003327
 DN6196!UTM  18      -   0.99998800  x   0.99967390  =   0.99966191
 DN6196
 DN6196_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2252591234(NAD 83)
 DN6196
 DN6196                          SUPERSEDED SURVEY CONTROL
 DN6196
 DN6196  NAD 83(2007)-  39 40 02.69295(N)    075 54 11.69368(W) AD(2002.00) 1
 DN6196  ELLIP H (02/23/12)   76.506  (m)                       GP(2002.00) 4 1
 DN6196
 DN6196.Superseded values are not recommended for survey control.
 DN6196
 DN6196.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6196.See file dsdata.pdf to determine how the superseded data were derived.
 DN6196
 DN6196_MARKER: DD = SURVEY DISK
 DN6196_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6196_STAMPING: ARROWHEAD 2008
 DN6196_MARK LOGO: MD-015
 DN6196_PROJECTION: FLUSH
 DN6196_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6196_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6196+STABILITY: SURFACE MOTION
 DN6196_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6196+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6196
 DN6196  HISTORY     - Date     Condition        Report By
 DN6196  HISTORY     - 20081204 MONUMENTED       GWS
 DN6196  HISTORY     - 20251016 GOOD             PROFLN
 DN6196
 DN6196                          STATION DESCRIPTION
 DN6196
 DN6196'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6196'THE STATION IS LOCATED 4.3 MI (6.9 KM) NORTHEASTERLY OF THE TOWN OF
 DN6196'NORTH EAST.
 DN6196'
 DN6196'TO REACH THE STATION FROM THE JUNCTION OF TELEGRAPH ROAD (ROUTE 273)
 DN6196'AND BLUE BALL ROAD (ROUTE 545), PROCEED SOUTH ON BLUE BALL ROAD FOR
 DN6196'2.65 MI (4.3 KM) TO AN INTERSECTION.  TURN RIGHT AND GO SOUTH ON UNION
 DN6196'CHURCH ROAD FOR 0.21 MI (0.3 KM) TO ARROWHEAD DRIVE AND THE STATION ON
 DN6196'THE LEFT.
 DN6196'
 DN6196'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6196'CONCRETE MONUMENT ON THE NORTHEAST SIDE OF THE INTERSECTION OF UNION
 DN6196'CHURCH ROAD AND ARROWHEAD DRIVE, 18.5 FT (5.6 M) EAST OF THE
 DN6196'CENTERLINE OF UNION CHURCH ROAD, 36.5 FT (11.1 M) NORTH OF THE CENTER
 DN6196'OF ARROWHEAD DRIVE AND 91.3 FT (27.8 M) SOUTHWEST OF A 3-CAR GARAGE IN
 DN6196'THE NORTHEAST ANGLE OF THE INTERSECTION.
 DN6196
 DN6196                          STATION RECOVERY (2025)
 DN6196
 DN6196'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6196'IN A LANDSCAPED BED, 14 FT (4.3 M) NORTH OF A STOP SIGN, PUT UNDER A
 DN6196'RECTANGULAR VALVE BOX FOR LOCATION AND ACCESS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4755 ***********************************************************************
 AB4755  DESIGNATION -  ARTER
 AB4755  PID         -  AB4755
 AB4755  STATE/COUNTY-  MD/CARROLL
 AB4755  COUNTRY     -  US
 AB4755  USGS QUAD   -  LITTLESTOWN (2019)
 AB4755
 AB4755                         *CURRENT SURVEY CONTROL
 AB4755  ______________________________________________________________________
 AB4755* NAD 83(2011) POSITION- 39 42 31.62406(N) 077 03 56.07122(W)   ADJUSTED
 AB4755* NAD 83(2011) ELLIP HT-   194.080 (meters)        (06/27/12)   ADJUSTED
 AB4755* NAD 83(2011) EPOCH   -  2010.00
 AB4755* NAVD 88 ORTHO HEIGHT -   226.9   (meters)      744.    (feet) GPS OBS
 AB4755  ______________________________________________________________________
 AB4755  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4755  GEOID HEIGHT    -        -32.878 (meters)                     GEOID99
 AB4755  GEOID HEIGHT    -        -32.886 (meters)                     GEOID18
 AB4755  NAD 83(2011) X  -  1,099,834.320 (meters)                     COMP
 AB4755  NAD 83(2011) Y  - -4,788,905.110 (meters)                     COMP
 AB4755  NAD 83(2011) Z  -  4,053,287.424 (meters)                     COMP
 AB4755  LAPLACE CORR    -          4.82  (seconds)                    DEFLEC18
 AB4755
 AB4755  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4755  Standards:
 AB4755         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4755            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4755  -------------------------------------------------------------------
 AB4755  NETWORK    0.81   2.47           0.37   0.28   1.26     -0.03453369
 AB4755  -------------------------------------------------------------------
 AB4755  Click here for local accuracies and other accuracy information.
 AB4755
 AB4755.The horizontal coordinates were established by GPS observations
 AB4755.and adjusted by the National Geodetic Survey in June 2012.
 AB4755
 AB4755.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4755.been affixed to the stable North American tectonic plate. See 
 AB4755.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4755
 AB4755.The horizontal coordinates are valid at the epoch date displayed above
 AB4755.which is a decimal equivalence of Year/Month/Day.
 AB4755
 AB4755.The orthometric height was determined by GPS observations and a
 AB4755.high-resolution geoid model.
 AB4755
 AB4755.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4755.GEOID18 height accuracy estimate available here.
 AB4755
 AB4755.Click photographs - Photos may exist for this station.
 AB4755
 AB4755.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4755
 AB4755.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4755
 AB4755.The ellipsoidal height was determined by GPS observations
 AB4755.and is referenced to NAD 83.
 AB4755
 AB4755. The following values were computed from the NAD 83(2011) position.
 AB4755
 AB4755;                    North         East     Units Scale Factor Converg.
 AB4755;SPC MD       -   226,698.375   394,376.242   MT  1.00005553   -0 02 28.2
 AB4755;SPC MD       -   743,759.59  1,293,882.72   sFT  1.00005553   -0 02 28.2
 AB4755;UTM  18      - 4,397,475.636   322,929.267   MT  0.99998603   -1 19 12.0
 AB4755
 AB4755!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4755!SPC MD       -   0.99996955  x   1.00005553  =   1.00002508
 AB4755!UTM  18      -   0.99996955  x   0.99998603  =   0.99995558
 AB4755
 AB4755:                Primary Azimuth Mark                     Grid Az
 AB4755:SPC MD       -  ARTER AZ MK                              206 37 13.1
 AB4755:UTM  18      -  ARTER AZ MK                              207 53 56.9
 AB4755
 AB4755_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2292997475(NAD 83)
 AB4755
 AB4755|---------------------------------------------------------------------|
 AB4755| PID    Reference Object                     Distance      Geod. Az  |
 AB4755|                                                           dddmmss.s |
 AB4755| AB4770 ARTER AZ MK                         APPROX. 1.1 KM 2063444.9 |
 AB4755|---------------------------------------------------------------------|
 AB4755
 AB4755                          SUPERSEDED SURVEY CONTROL
 AB4755
 AB4755  NAD 83(2007)-  39 42 31.62438(N)    077 03 56.07181(W) AD(2002.00) 0
 AB4755  ELLIP H (02/10/07)  194.096  (m)                       GP(2002.00)    
 AB4755  ELLIP H (08/30/02)  194.045  (m)                       GP(       ) 4 2
 AB4755  NAD 83(1991)-  39 42 31.62347(N)    077 03 56.07255(W) AD(       ) 1
 AB4755  ELLIP H (07/03/96)  194.010  (m)                       GP(       ) 1 1
 AB4755  NAVD 88 (07/03/96)  226.9    (m)  GEOID93  model used  GPS OBS        
 AB4755
 AB4755.Superseded values are not recommended for survey control.
 AB4755
 AB4755.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4755.See file dsdata.pdf to determine how the superseded data were derived.
 AB4755
 AB4755_MARKER: DD = SURVEY DISK
 AB4755_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4755_STAMPING: ARTER 1995
 AB4755_MARK LOGO: MD-013
 AB4755_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4755_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4755+STABILITY: SURFACE MOTION
 AB4755_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4755+SATELLITE: SATELLITE OBSERVATIONS - August 17, 2015
 AB4755
 AB4755  HISTORY     - Date     Condition        Report By
 AB4755  HISTORY     - 1995     MONUMENTED       MD-013
 AB4755  HISTORY     - 20070529 GOOD             GEOCAC
 AB4755  HISTORY     - 20150817 GOOD             USPSQD
 AB4755
 AB4755                          STATION DESCRIPTION
 AB4755
 AB4755'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4755'STATION IS LOCATED ABOUT 10 MI (16.1 KM) NORTHWEST OF WESTMINSTER AND
 AB4755'ABOUT 0.75 MI (1.21 KM) SOUTH OF THE MARYLAND/PENNSYLVANIA STATE LINE.
 AB4755'TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 97 (LITTLESTOWN
 AB4755'PIKE) WITH THE STATE LINE, GO SOUTH ON MD ROUTE 97 FOR 0.35 MI (0.56
 AB4755'KM) TO THE INTERSECTION WITH ARTERS MILL ROAD. TURN RIGHT ON ARTERS
 AB4755'MILL ROAD AND GO SOUTH FOR 0.4 MI (0.6 KM) TO THE STATION ON THE
 AB4755'RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4755'MONUMENT SET FLUSH WITH THE GROUND. IT IS 19.8 FT (6.0 M) NORTHWEST OF
 AB4755'THE CENTERLINE OF THE ROAD, 59.0 FT (18.0 M) NORTHEAST OF THE
 AB4755'CENTERLINE OF A GRAVEL DRIVE LEADING NORTHWEST TO HOUSE NO.4900, 10.9
 AB4755'FT (3.3 M) SOUTHEAST OF THE END OF A WIRE FENCE, 30.0 FT (9.1 M)
 AB4755'SOUTHWEST OF THE CENTERLINE OF A GRAVEL FARM LANE AND 83.3 FT (25.4 M)
 AB4755'SOUTHWEST OF TELEPHONE PEDESTAL NO.6.
 AB4755
 AB4755                          STATION RECOVERY (2007)
 AB4755
 AB4755'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 AB4755'RECOVERED IN GOOD CONDITION.
 AB4755
 AB4755                          STATION RECOVERY (2015)
 AB4755
 AB4755'RECOVERY NOTE BY US POWER SQUADRON 2015
 AB4755'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4770 ***********************************************************************
 AB4770  DESIGNATION -  ARTER AZ MK
 AB4770  PID         -  AB4770
 AB4770  STATE/COUNTY-  MD/CARROLL
 AB4770  COUNTRY     -  US
 AB4770  USGS QUAD   -  LITTLESTOWN (2019)
 AB4770
 AB4770                         *CURRENT SURVEY CONTROL
 AB4770  ______________________________________________________________________
 AB4770* NAD 83(2011) POSITION- 39 41 59.29996(N) 077 04 17.00628(W)   ADJUSTED
 AB4770* NAD 83(2011) ELLIP HT-   181.520 (meters)        (06/27/12)   ADJUSTED
 AB4770* NAD 83(2011) EPOCH   -  2010.00
 AB4770* NAVD 88 ORTHO HEIGHT -   214.3   (meters)      703.    (feet) GPS OBS
 AB4770  ______________________________________________________________________
 AB4770  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4770  GEOID HEIGHT    -        -32.856 (meters)                     GEOID99
 AB4770  GEOID HEIGHT    -        -32.860 (meters)                     GEOID18
 AB4770  NAD 83(2011) X  -  1,099,488.590 (meters)                     COMP
 AB4770  NAD 83(2011) Y  - -4,789,628.028 (meters)                     COMP
 AB4770  NAD 83(2011) Z  -  4,052,512.396 (meters)                     COMP
 AB4770  LAPLACE CORR    -          4.81  (seconds)                    DEFLEC18
 AB4770
 AB4770  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4770  Standards:
 AB4770         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4770            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4770  -------------------------------------------------------------------
 AB4770  NETWORK    0.74   2.53           0.34   0.25   1.29      0.16837194
 AB4770  -------------------------------------------------------------------
 AB4770  Click here for local accuracies and other accuracy information.
 AB4770
 AB4770.The horizontal coordinates were established by GPS observations
 AB4770.and adjusted by the National Geodetic Survey in June 2012.
 AB4770
 AB4770.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4770.been affixed to the stable North American tectonic plate. See 
 AB4770.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4770
 AB4770.The horizontal coordinates are valid at the epoch date displayed above
 AB4770.which is a decimal equivalence of Year/Month/Day.
 AB4770
 AB4770.The orthometric height was determined by GPS observations and a
 AB4770.high-resolution geoid model.
 AB4770
 AB4770.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4770.GEOID18 height accuracy estimate available here.
 AB4770
 AB4770.Click photographs - Photos may exist for this station.
 AB4770
 AB4770.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4770
 AB4770.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4770
 AB4770.The ellipsoidal height was determined by GPS observations
 AB4770.and is referenced to NAD 83.
 AB4770
 AB4770. The following values were computed from the NAD 83(2011) position.
 AB4770
 AB4770;                    North         East     Units Scale Factor Converg.
 AB4770;SPC MD       -   225,701.775   393,876.741   MT  1.00005326   -0 02 41.3
 AB4770;SPC MD       -   740,489.91  1,292,243.94   sFT  1.00005326   -0 02 41.3
 AB4770;UTM  18      - 4,396,490.498   322,407.684   MT  0.99998830   -1 19 24.5
 AB4770
 AB4770!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4770!SPC MD       -   0.99997152  x   1.00005326  =   1.00002478
 AB4770!UTM  18      -   0.99997152  x   0.99998830  =   0.99995982
 AB4770
 AB4770:                Primary Azimuth Mark                     Grid Az
 AB4770:SPC MD       -  ARTER                                    026 37 12.8
 AB4770:UTM  18      -  ARTER                                    027 53 56.0
 AB4770
 AB4770_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2240796490(NAD 83)
 AB4770
 AB4770|---------------------------------------------------------------------|
 AB4770| PID    Reference Object                     Distance      Geod. Az  |
 AB4770|                                                           dddmmss.s |
 AB4770| AB4755 ARTER                               APPROX. 1.1 KM 0263431.5 |
 AB4770|---------------------------------------------------------------------|
 AB4770
 AB4770                          SUPERSEDED SURVEY CONTROL
 AB4770
 AB4770  NAD 83(2007)-  39 41 59.30028(N)    077 04 17.00687(W) AD(2002.00) 0
 AB4770  ELLIP H (02/10/07)  181.537  (m)                       GP(2002.00)    
 AB4770  ELLIP H (08/30/02)  181.482  (m)                       GP(       ) 4 2
 AB4770  NAD 83(1991)-  39 41 59.29934(N)    077 04 17.00764(W) AD(       ) 1
 AB4770  ELLIP H (07/03/96)  181.450  (m)                       GP(       ) 1 1
 AB4770  NAVD 88 (07/03/96)  214.3    (m)  GEOID93  model used  GPS OBS        
 AB4770
 AB4770.Superseded values are not recommended for survey control.
 AB4770
 AB4770.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4770.See file dsdata.pdf to determine how the superseded data were derived.
 AB4770
 AB4770_MARKER: DD = SURVEY DISK
 AB4770_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4770_STAMPING: ARTER AZIMUTH 1995
 AB4770_MARK LOGO: MD-013
 AB4770_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4770_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4770+STABILITY: SURFACE MOTION
 AB4770_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4770+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2007
 AB4770
 AB4770  HISTORY     - Date     Condition        Report By
 AB4770  HISTORY     - 1995     MONUMENTED       MD-013
 AB4770  HISTORY     - 20070529 GOOD             GEOCAC
 AB4770
 AB4770                          STATION DESCRIPTION
 AB4770
 AB4770'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4770'THE STATION IS LOCATED ABOUT 9.5 MI (15.3 KM) NORTHWEST OF WESTMINSTER
 AB4770'AND ABOUT 1.0 MI (1.6 KM) SOUTH OF THE PENNSYLVANIA STATE LINE.
 AB4770'
 AB4770'TO REACH THE STATION FROM THE INTERSECTION OF MD ROUTE 97 (LITTLESTOWN
 AB4770'PIKE) WITH THE MARYLAND/PENNSYLVANIA STATE LINE, GO SOUTH ON MD ROUTE
 AB4770'94 FOR 0.35 MI (0.56 KM) TO THE INTERSECTION WITH ARTERS MILL ROAD.
 AB4770'TURN RIGHT ON ARTERS MILL ROAD AND GO SOUTH FOR 1.1 MI (1.8 KM) TO THE
 AB4770'STATION ON THE RIGHT.  THE STATION IS ALSO ABOUT 300 FT (91.4 M) NORTH
 AB4770'OF THE INTERSECTION OF ARTERS MILL ROAD AND ZEIGLERS OUTLET ROAD.
 AB4770'
 AB4770'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4770'MONUMENT SET FLUSH WITH THE GROUND.  IT IS 11.5 FT (3.5 M) WEST OF THE
 AB4770'CENTERLINE OF ARTERS MILL ROAD, 190 FT (57.9 M) SOUTH OF POWER POLE
 AB4770'NO. 159040 AND 291 FT (88.7 M) NORTH OF THE CENTERLINE OF ZIEGLERS
 AB4770'OUTLET ROAD.
 AB4770
 AB4770                          STATION RECOVERY (2007)
 AB4770
 AB4770'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 AB4770'THE DISK IS LOCATED AT THE EDGE OF A CULTIVATED FIELD, AND IS ABOUT 10
 AB4770'CM BELOW THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6341 ***********************************************************************
 HV6341  DESIGNATION -  ARUNDEL
 HV6341  PID         -  HV6341
 HV6341  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6341  COUNTRY     -  US
 HV6341  USGS QUAD   -  ANNAPOLIS (2016)
 HV6341
 HV6341                         *CURRENT SURVEY CONTROL
 HV6341  ______________________________________________________________________
 HV6341* NAD 83(1991) POSITION- 38 54 42.20763(N) 076 28 07.62923(W)   ADJUSTED
 HV6341* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6341  ______________________________________________________________________
 HV6341  GEOID HEIGHT    -        -33.482 (meters)                     GEOID18
 HV6341  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 HV6341  HORZ ORDER      -  SECOND
 HV6341
 HV6341.The horizontal coordinates were established by classical geodetic methods
 HV6341.and adjusted by the National Geodetic Survey in January 1992.
 HV6341
 HV6341.The orthometric height was scaled from a topographic map.
 HV6341
 HV6341.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6341.GEOID18 height accuracy estimate available here.
 HV6341
 HV6341.Click photographs - Photos may exist for this station.
 HV6341
 HV6341.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6341
 HV6341. The following values were computed from the NAD 83(1991) position.
 HV6341
 HV6341;                    North         East     Units Scale Factor Converg.
 HV6341;SPC MD       -   138,340.846   446,071.731   MT  0.99995004   +0 20 00.3
 HV6341;SPC MD       -   453,873.26  1,463,487.00   sFT  0.99995004   +0 20 00.3
 HV6341;UTM  18      - 4,308,005.998   372,654.393   MT  0.99979969   -0 55 21.7
 HV6341
 HV6341!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6341!SPC MD       -   1.00000482  x   0.99995004  =   0.99995486
 HV6341!UTM  18      -   1.00000482  x   0.99979969  =   0.99980451
 HV6341
 HV6341:                Primary Azimuth Mark                     Grid Az
 HV6341:SPC MD       -  SAUNDERS                                 215 48 46.2
 HV6341:UTM  18      -  SAUNDERS                                 217 04 08.2
 HV6341
 HV6341_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7265408005(NAD 83)
 HV6341
 HV6341|---------------------------------------------------------------------|
 HV6341| PID    Reference Object                     Distance      Geod. Az  |
 HV6341|                                                           dddmmss.s |
 HV6341| HV6399 ARUNDEL RM                            4.087 METERS 04502     |
 HV6341| CX2048 ARUNDEL RM 1                         23.835 METERS 19957     |
 HV6341| HV6304 SAUNDERS                            APPROX. 3.1 KM 2160846.5 |
 HV6341| HV7116 TURKEY POINT WHITE WATER TANK       APPROX. 2.8 KM 2512613.3 |
 HV6341| HV6318 TURKEY PT LARGE GREY HOUSE CHY      APPROX. 2.3 KM 2603743.5 |
 HV6341| CX2049 ARUNDEL RM 2                         22.260 METERS 26355     |
 HV6341|---------------------------------------------------------------------|
 HV6341
 HV6341                          SUPERSEDED SURVEY CONTROL
 HV6341
 HV6341  NAD 83(1986)-  38 54 42.20406(N)    076 28 07.64113(W) AD(       ) 2
 HV6341  NAD 27      -  38 54 41.78700(N)    076 28 08.79300(W) AD(       ) 2
 HV6341  USSD        -  38 54 42.16300(N)    076 28 08.61800(W) AD(       ) 3
 HV6341
 HV6341.Superseded values are not recommended for survey control.
 HV6341
 HV6341.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6341.See file dsdata.pdf to determine how the superseded data were derived.
 HV6341
 HV6341_MARKER: DS = TRIANGULATION STATION DISK
 HV6341_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6341_STAMPING: A
 HV6341_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6341
 HV6341  HISTORY     - Date     Condition        Report By
 HV6341  HISTORY     - 1898     MONUMENTED       CGS
 HV6341  HISTORY     - 1906     GOOD             CGS
 HV6341  HISTORY     - 1932     SEE DESCRIPTION  CGS
 HV6341  HISTORY     - 1943     GOOD             CGS
 HV6341  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6341  HISTORY     - 1973     MARK NOT FOUND   MDDNR
 HV6341
 HV6341                          STATION DESCRIPTION
 HV6341
 HV6341'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 HV6341'ON N SIDE OF ENTRANCE TO SOUTH RIVER, ON NARROW NECK OF LAND
 HV6341'BETWEEN FISHING CREEK AND SOUTH RIVER, ABOUT 5 FEET ABOVE AND 75
 HV6341'FEET BACK FROM HIGH-WATER MARK IN THE CREEK.  A SAND ROAD IS 25
 HV6341'FEET W OF THE STATION.  STATION MARK IS CENTER OF 4-INCH TILE PIPE
 HV6341'WITH TOP 1 FOOT BELOW SURFACE OF GROUND.  REFERENCE MARK IS
 HV6341'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HV6341'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2
 HV6341'FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6341'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6341'IT IS 4.07 METERS (13.35 FEET) FROM STATION.
 HV6341'DISTANCES AND BEARINGS FROM THE STATION OF OTHER
 HV6341'POINTS OF REFERENCE ARE AS FOLLOWS--S PEAK OF WHITE HOUSE ON
 HV6341'OPPOSITE SHORE, 2-1/2 MILES, S 83 DEG 23 MIN W.  TANGENT TO POINT, 1
 HV6341'1/2 MILES, N 63 DEG 42 MIN W.  NAIL IN BLAZE OF 6-INCH TWIN LOCUST
 HV6341'TREE, 7.22 METERS (23.69 FEET), N 46 DEG 53 MIN E.  S PEAK OF LONG
 HV6341'BARN ACROSS FISHING CREEK, 1/2 MILE, N 56 DEG 17 MIN E.  NAIL IN
 HV6341'15-INCH APPLE TREE, 8.77 METERS (28.77 FEET), S 44 DEG 02 MIN E.
 HV6341'CHIMNEY ON RED-ROOF COTTAGE, 300 YARDS, S 27 DEG 21 MIN E.
 HV6341
 HV6341                          STATION RECOVERY (1932)
 HV6341
 HV6341'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6341'STATION WAS FOUND.  THE TREES DESCRIBED AS REFERENCES ARE GONE AND
 HV6341'THE BUILDINGS HAVE POSSIBLY CHANGED.
 HV6341'
 HV6341'THE STATION WAS RE-MARKED WITH A STANDARD DISK SET IN CEMENT IN
 HV6341'THE CENTER OF THE TILE AND THE TOP SECTION OF THE TILE WAS
 HV6341'EMBEDDED IN CEMENT.  THE MARYLAND SHELL FISH SURVEY MONUMENT WAS
 HV6341'IN GOOD CONDITION.
 HV6341'
 HV6341'TWO ADDITIONAL STANDARD REFERENCE MARKS WERE SET AND MEASUREMENTS
 HV6341'TAKEN TO A FOURTH REFERENCE MARK.  THE LATTER WAS THE TOP OF A
 HV6341'CEMENT POST 8 INCHES IN DIAMETER WITH A 2-INCH HOLE IN THE CENTER
 HV6341'ON THE E EDGE OF THE SAND ROAD.
 HV6341
 HV6341                          STATION RECOVERY (1943)
 HV6341
 HV6341'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6341'THIS STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.  R.M. 2
 HV6341'WAS SEARCHED FOR BUT NOT FOUND.  FROM THE CONDITION OF THE SHORE
 HV6341'AT THIS POINT, IT IS BELIEVED THAT THE MARK HAS WASHED OUT.  THE
 HV6341'CONCRETE POST WITH THE HOLE IN THE TOP, AND THE MSFC MARK WERE
 HV6341'RECOVERED, IN ADDITION TO R.M. 1.
 HV6341
 HV6341                          STATION RECOVERY (1960)
 HV6341
 HV6341'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6341'THE STATION COULD NOT BE FOUND.
 HV6341'
 HV6341'THE MSFC CONCRETE REFERENCE MARK WAS FOUND IN GOOD CONDITION, AND
 HV6341'THE FOLLOWING MEASUREMENTS WERE TAKEN.
 HV6341'
 HV6341'MSFC TO CENTERLINE OF DIRT ROAD-7.25 M (23.7 FT.)
 HV6341'
 HV6341'MSFC TO G AND E CO. POWER POLE NO. 252117-7.5 M (24.6 FT.)
 HV6341'
 HV6341'THE OTHER REFERENCE MARKS COULD NOT BE FOUND.
 HV6341
 HV6341                          STATION RECOVERY (1973)
 HV6341
 HV6341'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV6341'MSFC-USCS GOOD
 HV6341'
 HV6341'RECOVD AS DESCRIBED WITH CHANGES--STA IS 12.2 FT NLY OF STEEL GATE
 HV6341'POST (SLY OF 2 ON N SIDE OF ROAD) MARKING ENTRANCE TO
 HV6341'A.A. CO. THOMAS FT. PARK.  68.5 FT SLY OF G AND E CO. POLE 372139
 HV6341'AND 82.5 FT ELY OF A 4 FT OAK TREE.  WITNESS POST AND SIGN PLACED
 HV6341'AT WEDGE OF MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5683 ***********************************************************************
 JV5683  DESIGNATION -  ARUNDEL HB
 JV5683  PID         -  JV5683
 JV5683  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5683  COUNTRY     -  US
 JV5683  USGS QUAD   -  CURTIS BAY (2016)
 JV5683
 JV5683                         *CURRENT SURVEY CONTROL
 JV5683  ______________________________________________________________________
 JV5683* NAD 83(1991) POSITION- 39 14 48.57595(N) 076 35 32.50879(W)   ADJUSTED
 JV5683* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5683  ______________________________________________________________________
 JV5683  GEOID HEIGHT    -        -32.843 (meters)                     GEOID18
 JV5683  LAPLACE CORR    -         -4.74  (seconds)                    DEFLEC18
 JV5683  HORZ ORDER      -  THIRD
 JV5683
 JV5683.The horizontal coordinates were established by classical geodetic methods
 JV5683.and adjusted by the National Geodetic Survey in January 1992.
 JV5683
 JV5683.The orthometric height was scaled from a topographic map.
 JV5683
 JV5683.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5683.GEOID18 height accuracy estimate available here.
 JV5683
 JV5683.Click photographs - Photos may exist for this station.
 JV5683
 JV5683.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5683
 JV5683. The following values were computed from the NAD 83(1991) position.
 JV5683
 JV5683;                    North         East     Units Scale Factor Converg.
 JV5683;SPC MD       -   175,485.835   435,187.919   MT  0.99997077   +0 15 21.0
 JV5683;SPC MD       -   575,739.78  1,427,779.03   sFT  0.99997077   +0 15 21.0
 JV5683;UTM  18      - 4,345,375.981   362,591.225   MT  0.99983248   -1 00 27.3
 JV5683
 JV5683!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5683!SPC MD       -   1.00000519  x   0.99997077  =   0.99997596
 JV5683!UTM  18      -   1.00000519  x   0.99983248  =   0.99983767
 JV5683
 JV5683:                Primary Azimuth Mark                     Grid Az
 JV5683:SPC MD       -  BROMO SELTZER BLDG FINIAL LT             331 28 37.6
 JV5683:UTM  18      -  BROMO SELTZER BLDG FINIAL LT             332 44 25.9
 JV5683
 JV5683_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6259145375(NAD 83)
 JV5683
 JV5683|---------------------------------------------------------------------|
 JV5683| PID    Reference Object                     Distance      Geod. Az  |
 JV5683|                                                           dddmmss.s |
 JV5683| JV5495 BALTIMORE AND OHIO ELEV CUPOLA      APPROX. 2.7 KM 0162905.1 |
 JV5683| JV5493 BALTIMORE YACHT CLUB FLAGSTAFF      APPROX. 1.7 KM 0183227.8 |
 JV5683| CA9894 ARUNDEL HB RM                        16.510 METERS 24007     |
 JV5683| JV5690 YOKELS PARK FLAGSTAFF               APPROX. 1.3 KM 2525421.2 |
 JV5683| JV5504 BROMO SELTZER BLDG FINIAL LT        APPROX. 5.1 KM 3314358.6 |
 JV5683| JV5560 GAS COMPANY STACK                   APPROX. 2.4 KM 3343346.5 |
 JV5683| JV5538 OUR LADY OF CONCEPTION CHURCH       APPROX. 2.4 KM 3594708.8 |
 JV5683|---------------------------------------------------------------------|
 JV5683
 JV5683                          SUPERSEDED SURVEY CONTROL
 JV5683
 JV5683  NAD 83(1986)-  39 14 48.57235(N)    076 35 32.51791(W) AD(       ) 3
 JV5683  NAD 27      -  39 14 48.18800(N)    076 35 33.64000(W) AD(       ) 3
 JV5683  USSD        -  39 14 48.55100(N)    076 35 33.47700(W) AD(       ) 3
 JV5683
 JV5683.Superseded values are not recommended for survey control.
 JV5683
 JV5683.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5683.See file dsdata.pdf to determine how the superseded data were derived.
 JV5683
 JV5683_MARKER: N = NAIL
 JV5683_SETTING: 0 = UNSPECIFIED SETTING
 JV5683
 JV5683  HISTORY     - Date     Condition        Report By
 JV5683  HISTORY     - 1915     MONUMENTED       LOCENG
 JV5683
 JV5683                          STATION DESCRIPTION
 JV5683
 JV5683'DESCRIBED BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1915 (EWE)
 JV5683'ON THE S SHORE OF THE PATAPSCO RIVER, OPPOSITE FORT MC HENRY, ON A
 JV5683'LOW SANDY BANK, ABOUT 5 METERS BACK FROM HIGH-WATER LINE, AND ABOUT
 JV5683'800 FEET E OF A SMALL GREEN SHACK.  JUST E OF THE STATION IS A
 JV5683'SMALL CLUSTER OF BUSHES, AND INSHORE FROM THE STATION IS A MARSH.
 JV5683'THE STATION WAS MARKED BY THE HARBOR BOARD, THE MARK CONSISTING
 JV5683'OF A CONCRETE MONUMENT WITH COPPER NAIL FOR CENTER.  A STANDARD
 JV5683'BRONZE DISK REFERENCE MARK SET IN A CONCRETE MONUMENT
 JV5683'AND PROJECTING 6 INCHES ABOVE THE
 JV5683'GROUND, WAS PLACED 16.51 METERS (54.17 FEET) FROM THE
 JV5683'STATION S 60 DEG 07 MIN W.  AT THE REFERENCE MARK THE
 JV5683'SOUTHEASTERN CORNER OF THE SHED ON ONE OF THE WESTERN MARYLAND
 JV5683'RAILROAD PIERS IN ON RANGE WITH THE EMERSON TOWER.  IN 1924
 JV5683'THIS STATION REPORTED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4416 ***********************************************************************
 JV4416  DESIGNATION -  ARZO
 JV4416  PID         -  JV4416
 JV4416  STATE/COUNTY-  MD/MONTGOMERY
 JV4416  COUNTRY     -  US
 JV4416  USGS QUAD   -  GAITHERSBURG (2016)
 JV4416
 JV4416                         *CURRENT SURVEY CONTROL
 JV4416  ______________________________________________________________________
 JV4416* NAD 83(1993) POSITION- 39 08 15.39958(N) 077 12 07.87978(W)   ADJUSTED
 JV4416* NAVD 88 ORTHO HEIGHT -   144.5   (meters)      474.    (feet) VERTCON3
 JV4416  ______________________________________________________________________
 JV4416  GEOID HEIGHT    -        -31.736 (meters)                     GEOID18
 JV4416  LAPLACE CORR    -          1.04  (seconds)                    DEFLEC18
 JV4416  HORZ ORDER      -  FIRST
 JV4416
 JV4416.The horizontal coordinates were established by classical geodetic methods
 JV4416.and adjusted by the National Geodetic Survey in November 1994.
 JV4416
 JV4416.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4416.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4416
 JV4416.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4416.GEOID18 height accuracy estimate available here.
 JV4416
 JV4416.Click photographs - Photos may exist for this station.
 JV4416
 JV4416.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4416
 JV4416. The following values were computed from the NAD 83(1993) position.
 JV4416
 JV4416;                    North         East     Units Scale Factor Converg.
 JV4416;SPC MD       -   163,302.021   382,519.795   MT  0.99996026   -0 07 36.8
 JV4416;SPC MD       -   535,766.71  1,254,983.69   sFT  0.99996026   -0 07 36.8
 JV4416;UTM  18      - 4,334,356.940   309,668.906   MT  1.00004607   -1 23 25.5
 JV4416
 JV4416!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4416!SPC MD       -   0.99998231  x   0.99996026  =   0.99994257
 JV4416!UTM  18      -   0.99998231  x   1.00004607  =   1.00002838
 JV4416
 JV4416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0966834356(NAD 83)
 JV4416
 JV4416|---------------------------------------------------------------------|
 JV4416| PID    Reference Object                     Distance      Geod. Az  |
 JV4416|                                                           dddmmss.s |
 JV4416| JV4417 ARZO AZ MK                           65.805 METERS 03455     |
 JV4416| JV4126 OBSERVATORY                         284.746 METERS 11224     |
 JV4416| CK6540 ARZO RP                                            20422     |
 JV4416|---------------------------------------------------------------------|
 JV4416
 JV4416                          SUPERSEDED SURVEY CONTROL
 JV4416
 JV4416  NAD 83(1991)-  39 08 15.39918(N)    077 12 07.87988(W) AD(       ) 1
 JV4416  NAD 83(1986)-  39 08 15.39900(N)    077 12 07.89000(W) AD(       ) 1
 JV4416  NAD 27      -  39 08 15.01172(N)    077 12 08.94964(W) AD(       ) 1
 JV4416  NGVD 29 (07/19/86)  144.7    (m)          475.     (f) VERT ANG       
 JV4416
 JV4416.Superseded values are not recommended for survey control.
 JV4416
 JV4416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4416.See file dsdata.pdf to determine how the superseded data were derived.
 JV4416
 JV4416_MARKER: DS = TRIANGULATION STATION DISK
 JV4416_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4416_STAMPING: ARZO 1966
 JV4416_MARK LOGO: CGS
 JV4416_PROJECTION: RECESSED 0 CENTIMETERS
 JV4416_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4416_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4416+STABILITY: SURFACE MOTION
 JV4416
 JV4416  HISTORY     - Date     Condition        Report By
 JV4416  HISTORY     - 1966     MONUMENTED       CGS
 JV4416  HISTORY     - 20170502 GOOD             PROFLN
 JV4416
 JV4416                          STATION DESCRIPTION
 JV4416
 JV4416'DESCRIBED BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 JV4416'THIS MARK AND ITS AZIMUTH MARK WERE SET TO HONOR RAY TOMLINSON, AKA
 JV4416'ARZO, FOR HIS WORK, ALONG WITH OTHERS SUCH AS BUD LESLIE AND CHARLIE
 JV4416'GLOVER, AS A PIONEER OF EDM USE AT THE NATIONAL GEODETIC SURVEY.
 JV4416'
 JV4416'IT IS IN GAITHERSBURG ABOUT 300 FT (91.4 M) SOUTH-SOUTHWEST ALONG
 JV4416'SPRING ST FROM THE INTERSECTION WITH MILLS ST, IN THE GRASS MEDIAN
 JV4416'BETWEEN THE DRIVEWAYS TO HOUSES 104 AND 106.
 JV4416'
 JV4416'IT IS 25 FT (7.6 M) WEST-NORTHWEST OF SPRING ST, 19 FT (5.8 M) NORTH
 JV4416'OF A WATER METER THAT IS SOUTH OF THE DRIVEWAY TO HOUSE 106, 6.7 FT
 JV4416'(2.0 M) WEST-NORTHWEST OF THE FACE OF THE WESTERLY CURB, 5 FT (1.5 M)
 JV4416'NORTH-NORTHEAST OF THE NORTHERLY EDGE OF THE DRIVE TO HOUSE 106, 4.5
 JV4416'FT (1.4 M) SOUTH-SOUTHWEST OF THE SOUTHERLY EDGE OF THE DRIVE TO HOUSE
 JV4416'104, 0.2 FT (6 CM) BELOW GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4417 ***********************************************************************
 JV4417  DESIGNATION -  ARZO AZ MK
 JV4417  PID         -  JV4417
 JV4417  STATE/COUNTY-  MD/MONTGOMERY
 JV4417  COUNTRY     -  US
 JV4417  USGS QUAD   -  GAITHERSBURG (2016)
 JV4417
 JV4417                         *CURRENT SURVEY CONTROL
 JV4417  ______________________________________________________________________
 JV4417* NAD 83(1993) POSITION- 39 08 17.14918(N) 077 12 06.31117(W)   ADJUSTED
 JV4417* NAVD 88 ORTHO HEIGHT -   142.5   (meters)      468.    (feet) VERTCON3
 JV4417  ______________________________________________________________________
 JV4417  GEOID HEIGHT    -        -31.736 (meters)                     GEOID18
 JV4417  LAPLACE CORR    -          1.03  (seconds)                    DEFLEC18
 JV4417  HORZ ORDER      -  FIRST
 JV4417
 JV4417.The horizontal coordinates were established by classical geodetic methods
 JV4417.and adjusted by the National Geodetic Survey in November 1994.
 JV4417
 JV4417.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4417.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4417
 JV4417.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4417.GEOID18 height accuracy estimate available here.
 JV4417
 JV4417.Click photographs - Photos may exist for this station.
 JV4417
 JV4417.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4417
 JV4417. The following values were computed from the NAD 83(1993) position.
 JV4417
 JV4417;                    North         East     Units Scale Factor Converg.
 JV4417;SPC MD       -   163,355.890   382,557.585   MT  0.99996030   -0 07 35.9
 JV4417;SPC MD       -   535,943.45  1,255,107.68   sFT  0.99996030   -0 07 35.9
 JV4417;UTM  18      - 4,334,409.967   309,707.878   MT  1.00004589   -1 23 24.5
 JV4417
 JV4417!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4417!SPC MD       -   0.99998262  x   0.99996030  =   0.99994292
 JV4417!UTM  18      -   0.99998262  x   1.00004589  =   1.00002851
 JV4417
 JV4417_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0970734409(NAD 83)
 JV4417
 JV4417|---------------------------------------------------------------------|
 JV4417| PID    Reference Object                     Distance      Geod. Az  |
 JV4417|                                                           dddmmss.s |
 JV4417| JV4126 OBSERVATORY                         278.000 METERS 12546     |
 JV4417| CK6539 ARZO AZ MK RP                                      20939     |
 JV4417| JV4416 ARZO                                 65.805 METERS 21455     |
 JV4417|---------------------------------------------------------------------|
 JV4417
 JV4417                          SUPERSEDED SURVEY CONTROL
 JV4417
 JV4417  NAD 83(1991)-  39 08 17.14877(N)    077 12 06.31127(W) AD(       ) 1
 JV4417  NAD 83(1986)-  39 08 17.14859(N)    077 12 06.32140(W) AD(       ) 1
 JV4417  NAD 27      -  39 08 16.76120(N)    077 12 07.38119(W) AD(       ) 1
 JV4417  NGVD 29 (07/19/86)  142.7    (m)          468.     (f) VERT ANG       
 JV4417
 JV4417.Superseded values are not recommended for survey control.
 JV4417
 JV4417.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4417.See file dsdata.pdf to determine how the superseded data were derived.
 JV4417
 JV4417_MARKER: DZ = AZIMUTH MARK DISK
 JV4417_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4417_STAMPING: ARZO 1966
 JV4417_MARK LOGO: CGS
 JV4417_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4417+STABILITY: SURFACE MOTION
 JV4417
 JV4417  HISTORY     - Date     Condition        Report By
 JV4417  HISTORY     - 1966     MONUMENTED       CGS
 JV4417  HISTORY     - 20170502 GOOD             PROFLN
 JV4417
 JV4417                          STATION DESCRIPTION
 JV4417
 JV4417'DESCRIBED BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 JV4417'THIS AZIMUTH MARK, ALONG WITH THE MAIN STATION, WAS SET TO HONOR RAY
 JV4417'TOMLINSON FOR HIS WORK PIONEERING EDM USE AT THE NATIONAL GEODETIC
 JV4417'SURVEY.
 JV4417'
 JV4417'IT IS IN GAITHERSBURG, AT THE SOUTHERLY CORNER OF THE INTERSECTION OF
 JV4417'SPRING AND MILLS STREETS, 18 FT (5.5 M) NORTH-NORTHEAST OF A DRIVEWAY
 JV4417'AND 2 FT (0.6 M) EAST-SOUTHEAST OF THE FACE OF THE EASTERLY CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5132 ***********************************************************************
 JV5132  DESIGNATION -  ASH
 JV5132  PID         -  JV5132
 JV5132  STATE/COUNTY-  MD/KENT
 JV5132  COUNTRY     -  US
 JV5132  USGS QUAD   -  ROCK HALL (2016)
 JV5132
 JV5132                         *CURRENT SURVEY CONTROL
 JV5132  ______________________________________________________________________
 JV5132* NAD 83(1991) POSITION- 39 07 42.60756(N) 076 09 41.07849(W)   ADJUSTED
 JV5132* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5132  ______________________________________________________________________
 JV5132  GEOID HEIGHT    -        -33.456 (meters)                     GEOID18
 JV5132  LAPLACE CORR    -         -2.04  (seconds)                    DEFLEC18
 JV5132  HORZ ORDER      -  THIRD
 JV5132
 JV5132.The horizontal coordinates were established by classical geodetic methods
 JV5132.and adjusted by the National Geodetic Survey in January 1992.
 JV5132
 JV5132.The orthometric height was scaled from a topographic map.
 JV5132
 JV5132.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5132.GEOID18 height accuracy estimate available here.
 JV5132
 JV5132.Click photographs - Photos may exist for this station.
 JV5132
 JV5132.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5132
 JV5132. The following values were computed from the NAD 83(1991) position.
 JV5132
 JV5132;                    North         East     Units Scale Factor Converg.
 JV5132;SPC MD       -   162,604.491   472,508.441   MT  0.99995955   +0 31 34.8
 JV5132;SPC MD       -   533,478.23  1,550,221.44   sFT  0.99995955   +0 31 34.8
 JV5132;UTM  18      - 4,331,678.881   399,612.159   MT  0.99972409   -0 43 58.7
 JV5132
 JV5132!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5132!SPC MD       -   1.00000513  x   0.99995955  =   0.99996468
 JV5132!UTM  18      -   1.00000513  x   0.99972409  =   0.99972922
 JV5132
 JV5132:                Primary Azimuth Mark                     Grid Az
 JV5132:SPC MD       -  NOTH                                     097 39 23.7
 JV5132:UTM  18      -  NOTH                                     098 54 57.2
 JV5132
 JV5132_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9961231678(NAD 83)
 JV5132
 JV5132|---------------------------------------------------------------------|
 JV5132| PID    Reference Object                     Distance      Geod. Az  |
 JV5132|                                                           dddmmss.s |
 JV5132| JV5124 NOTH                                APPROX. 0.6 KM 0981058.5 |
 JV5132| JV5131 KING                                220.673 METERS 22453     |
 JV5132|---------------------------------------------------------------------|
 JV5132
 JV5132                          SUPERSEDED SURVEY CONTROL
 JV5132
 JV5132  NAD 83(1986)-  39 07 42.60198(N)    076 09 41.09003(W) AD(       ) 3
 JV5132  NAD 27      -  39 07 42.20800(N)    076 09 42.26400(W) AD(       ) 3
 JV5132  USSD        -  39 07 42.61000(N)    076 09 42.08500(W) AD(       ) 3
 JV5132
 JV5132.Superseded values are not recommended for survey control.
 JV5132
 JV5132.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5132.See file dsdata.pdf to determine how the superseded data were derived.
 JV5132
 JV5132_MARKER: H = DRILL HOLE
 JV5132_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5132_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5132+STABILITY: SURFACE MOTION
 JV5132
 JV5132  HISTORY     - Date     Condition        Report By
 JV5132  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5132  HISTORY     - 1938     SEE DESCRIPTION  CGS
 JV5132
 JV5132                          STATION DESCRIPTION
 JV5132
 JV5132'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5132'STATION IS ON THE WESTERN SHORE OF EAST FORK OF LANGFORD CREEK,
 JV5132'ABOUT 1/2 MILE N OF MAIN BODY OF LANGFORD CREEK AND 1/8 MILE NE
 JV5132'OF N END OF CACAWAY ISLAND, IN CULTIVATED LAND ABOUT 10 FEET ABOVE
 JV5132'HIGH WATER, 35 YARDS NW OF SHORE, 14 YARDS NW OF EDGE OF LOW BANK,
 JV5132'20 YARDS NW OF LINE OF TREES ALONG SHORE, AND 36 YARDS SSW OF
 JV5132'POINT OF TREES.
 JV5132'
 JV5132'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5132'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5132'POST 2 FEET LONG, WITH TOP PROJECTING 6 INCHES.  THE LETTERS
 JV5132'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5132'MARK IS CENTER OF 2-INCH TILE PIPE, BURIED WITH THE TOP 2 INCHES
 JV5132'BELOW THE BASE OF THE MONUMENT.
 JV5132'
 JV5132'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5132'FOLLOWS--LEFT PEAK OF HOUSE, 1 MILE, S 46 DEG 49 MIN W.  CHIMNEY OF
 JV5132'SMALL HOUSE, 1-3/4 MILES, N 78 DEG 12 MIN W. NEAR PEAK OF LARGE
 JV5132'HOUSE, 1-1/2 MILES, N 65 DEG 32 MIN W. LEFT CHIMNEY OF LARGE
 JV5132'MANSION, 1-3/4 MILES, N 61 DEG 38 MIN W. NAIL IN BLAZE IN 5-INCH OAK
 JV5132'TREE, 21.37 METERS (70.1 FEET), N 62 DEG 45 MIN E. LEFT PEAK OF
 JV5132'LONG BARN, 1-1/2 MILES, S 72 DEG 24 MIN E. NAIL IN BLAZE IN
 JV5132'14-INCH OAK TREE, 19.55 METERS (64.1 FEET), S 68 DEG 06 MIN E.
 JV5132'NAIL IN BLAZE IN 14-INCH OAK TREE, 27.87 METERS (90.4 FEET),
 JV5132'S 12 DEG 00 MIN E.
 JV5132
 JV5132                          STATION RECOVERY (1938)
 JV5132
 JV5132'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5132'STATION FOUND LYING ON BLUFF OUT OF POSITION.  DESCRIPTION OF
 JV5132'STATION ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5001 ***********************************************************************
 JV5001  DESIGNATION -  ASHLAND
 JV5001  PID         -  JV5001
 JV5001  STATE/COUNTY-  MD/QUEEN ANNES
 JV5001  COUNTRY     -  US
 JV5001  USGS QUAD   -  CENTREVILLE (2017)
 JV5001
 JV5001                         *CURRENT SURVEY CONTROL
 JV5001  ______________________________________________________________________
 JV5001* NAD 83(1991) POSITION- 39 07 07.77321(N) 076 05 55.19170(W)   ADJUSTED
 JV5001* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5001  ______________________________________________________________________
 JV5001  GEOID HEIGHT    -        -33.549 (meters)                     GEOID18
 JV5001  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 JV5001  HORZ ORDER      -  THIRD
 JV5001
 JV5001.The horizontal coordinates were established by classical geodetic methods
 JV5001.and adjusted by the National Geodetic Survey in January 1992.
 JV5001
 JV5001.The orthometric height was scaled from a topographic map.
 JV5001
 JV5001.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5001.GEOID18 height accuracy estimate available here.
 JV5001
 JV5001.Click photographs - Photos may exist for this station.
 JV5001
 JV5001.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5001
 JV5001. The following values were computed from the NAD 83(1991) position.
 JV5001
 JV5001;                    North         East     Units Scale Factor Converg.
 JV5001;SPC MD       -   161,582.058   477,944.224   MT  0.99995882   +0 33 56.6
 JV5001;SPC MD       -   530,123.80  1,568,055.34   sFT  0.99995882   +0 33 56.6
 JV5001;UTM  18      - 4,330,537.525   405,022.855   MT  0.99971107   -0 41 35.6
 JV5001
 JV5001!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5001!SPC MD       -   1.00000530  x   0.99995882  =   0.99996412
 JV5001!UTM  18      -   1.00000530  x   0.99971107  =   0.99971637
 JV5001
 JV5001:                Primary Azimuth Mark                     Grid Az
 JV5001:SPC MD       -  INDIAN                                   222 54 31.5
 JV5001:UTM  18      -  INDIAN                                   224 10 03.7
 JV5001
 JV5001_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0502230537(NAD 83)
 JV5001
 JV5001|---------------------------------------------------------------------|
 JV5001| PID    Reference Object                     Distance      Geod. Az  |
 JV5001|                                                           dddmmss.s |
 JV5001| JV5002 INDIAN                              APPROX. 0.9 KM 2232828.1 |
 JV5001|---------------------------------------------------------------------|
 JV5001
 JV5001                          SUPERSEDED SURVEY CONTROL
 JV5001
 JV5001  NAD 83(1986)-  39 07 07.76732(N)    076 05 55.20370(W) AD(       ) 3
 JV5001  NAD 27      -  39 07 07.37600(N)    076 05 56.38800(W) AD(       ) 3
 JV5001  USSD        -  39 07 07.77900(N)    076 05 56.17500(W) AD(       ) 3
 JV5001
 JV5001.Superseded values are not recommended for survey control.
 JV5001
 JV5001.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5001.See file dsdata.pdf to determine how the superseded data were derived.
 JV5001
 JV5001_MARKER: H = DRILL HOLE
 JV5001_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5001_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5001+STABILITY: SURFACE MOTION
 JV5001
 JV5001  HISTORY     - Date     Condition        Report By
 JV5001  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5001  HISTORY     - 1939     GOOD             CGS
 JV5001  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5001
 JV5001                          STATION DESCRIPTION
 JV5001
 JV5001'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5001'STATION IS ON THE SOUTHEASTERN SHORE OF UPPER CHESTER RIVER, NEAR
 JV5001'ASHLAND WHARF, AND ABOUT 1/4 MILE NE OF WHITE COVE, ABOUT 1 FOOT
 JV5001'ABOVE HIGH WATER, 5 YARDS SE OF SHORE, 32 YARDS SW OF A FENCE,
 JV5001'AND 20 YARDS WNW OF PERSIMMON TREES.
 JV5001'
 JV5001'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5001'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5001'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5001'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5001'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5001'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5001'
 JV5001'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5001'FOLLOWS--CHIMNEY OF SUMMERHOUSE, 1/2 S MILE, S 39 DEG 32 MIN W.  RIGHT
 JV5001'TANGENT OF INDIANTOWN WHARF, 1/2 MILE, S 49 DEG 12 MIN W.  CHIMNEY ON
 JV5001'ELL OF MASSEY HOUSE, 5/8 MILE, S 81 DEG 14 MIN W.  CHIMNEY OF SMALL
 JV5001'HOUSE, 3/4 MILE, N 19 DEG 46 MIN W. PEAK OF QUAKER NECK WHARF
 JV5001'HOUSE, 3/4 MILE, N 09 DEG 11 MIN E. NAIL IN BLAZE IN FENCE POST (4
 JV5001'INCHES DIAMETER), 28.80 METERS (94.5 FEET), N 34 DEG 41 MIN E.
 JV5001'NAIL IN BLAZE IN 3-INCH PERSIMMON TREE, 22.81 METERS (74.8
 JV5001'FEET), S 69 DEG 09 MIN E. NAIL IN BLAZE IN 3-INCH PERSIMMON TREE,
 JV5001'17.29 METERS (56.7 FEET), S 26 DEG 58 MIN E.
 JV5001
 JV5001                          STATION RECOVERY (1939)
 JV5001
 JV5001'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5001'RECOVERED IN GOOD CONDITION.  DESCRIPTION SHOULD READ--ON THE
 JV5001'SOUTHEASTERN SHORE OF CHESTER RIVER, ABOUT 1/4 MILE NE OF WHITE
 JV5001'COVE, 175 YARDS SW OF THE INSHORE END OF THE RUINS OF ASHLAND
 JV5001'WHARF, 0.5 METER SE OF THE EDGE OF SOD AT HIGH-WATER LINE.
 JV5001'
 JV5001'THE BEARINGS TO VARIOUS OBJECTS, GIVEN IN THE ORIGINAL
 JV5001'DESCRIPTION, WERE NOT CHECKED.
 JV5001
 JV5001                          STATION RECOVERY (1961)
 JV5001
 JV5001'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5001'STATION NOT RECOVERED AFTER A SEARCH OF THE AREA.  IT WAS REPORTED
 JV5001'AS ONLY 0.5 METERS FROM THE M.H.W.L. IN 1939 AND HAS PROBABLY BEEN
 JV5001'DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5046 ***********************************************************************
 JV5046  DESIGNATION -  ASHLEY
 JV5046  PID         -  JV5046
 JV5046  STATE/COUNTY-  MD/KENT
 JV5046  COUNTRY     -  US
 JV5046  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5046
 JV5046                         *CURRENT SURVEY CONTROL
 JV5046  ______________________________________________________________________
 JV5046* NAD 83(1991) POSITION- 39 05 46.66797(N) 076 11 07.08806(W)   ADJUSTED
 JV5046* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5046  ______________________________________________________________________
 JV5046  GEOID HEIGHT    -        -33.492 (meters)                     GEOID18
 JV5046  LAPLACE CORR    -         -2.08  (seconds)                    DEFLEC18
 JV5046  HORZ ORDER      -  SECOND
 JV5046
 JV5046.The horizontal coordinates were established by classical geodetic methods
 JV5046.and adjusted by the National Geodetic Survey in January 1992.
 JV5046
 JV5046.The orthometric height was scaled from a topographic map.
 JV5046
 JV5046.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5046.GEOID18 height accuracy estimate available here.
 JV5046
 JV5046.Click photographs - Photos may exist for this station.
 JV5046
 JV5046.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5046
 JV5046. The following values were computed from the NAD 83(1991) position.
 JV5046
 JV5046;                    North         East     Units Scale Factor Converg.
 JV5046;SPC MD       -   159,010.705   470,474.625   MT  0.99995723   +0 30 40.8
 JV5046;SPC MD       -   521,687.62  1,543,548.83   sFT  0.99995723   +0 30 40.8
 JV5046;UTM  18      - 4,328,131.475   397,500.356   MT  0.99972936   -0 44 51.2
 JV5046
 JV5046!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5046!SPC MD       -   1.00000482  x   0.99995723  =   0.99996205
 JV5046!UTM  18      -   1.00000482  x   0.99972936  =   0.99973418
 JV5046
 JV5046:                Primary Azimuth Mark                     Grid Az
 JV5046:SPC MD       -  ORCHARD PT FARMS WINDMILL                037 08 04.9
 JV5046:UTM  18      -  ORCHARD PT FARMS WINDMILL                038 23 36.9
 JV5046
 JV5046_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9750028131(NAD 83)
 JV5046
 JV5046|---------------------------------------------------------------------|
 JV5046| PID    Reference Object                     Distance      Geod. Az  |
 JV5046|                                                           dddmmss.s |
 JV5046| JV5024 ORCHARD PT FARMS WINDMILL           APPROX. 3.1 KM 0373845.7 |
 JV5046| JV5028 PIONEER PT FARMS E BLACK TK         APPROX. 5.3 KM 1244419.9 |
 JV5046| CA9896 ASHLEY RM 1                          16.810 METERS 12620     |
 JV5046| JV5034 PIONEER PT FARMS W BLACK TK         APPROX. 4.8 KM 1442128.1 |
 JV5046| CA9897 ASHLEY RM 2                          16.880 METERS 26830     |
 JV5046| JV5045 ASHLEY FARM WINDMILL                 26.400 METERS 31533     |
 JV5046|---------------------------------------------------------------------|
 JV5046
 JV5046                          SUPERSEDED SURVEY CONTROL
 JV5046
 JV5046  NAD 83(1986)-  39 05 46.66193(N)    076 11 07.09935(W) AD(       ) 2
 JV5046  NAD 27      -  39 05 46.26500(N)    076 11 08.26900(W) AD(       ) 2
 JV5046
 JV5046.Superseded values are not recommended for survey control.
 JV5046
 JV5046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5046.See file dsdata.pdf to determine how the superseded data were derived.
 JV5046
 JV5046_MARKER: DS = TRIANGULATION STATION DISK
 JV5046_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5046_STAMPING: ASHLEY 1938
 JV5046_MARK LOGO: CGS
 JV5046_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5046+STABILITY: SURFACE MOTION
 JV5046
 JV5046  HISTORY     - Date     Condition        Report By
 JV5046  HISTORY     - 1938     MONUMENTED       CGS
 JV5046  HISTORY     - 1961     GOOD             CGS
 JV5046  HISTORY     - 1989     POOR             MDDNR
 JV5046
 JV5046                          STATION DESCRIPTION
 JV5046
 JV5046'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5046'STATION IS LOCATED ON PROPERTY OF J.C. ASHLEY, ON PINEY NECK ON
 JV5046'THE N SIDE OF CHESTER RIVER, BETWEEN GRAYS INN CREEK AND
 JV5046'LANGFORD BAY, JUST S OF DEEP COVE.  STATION IS JUST INSIDE OF A
 JV5046'WIRE-FENCE CHICKEN RUN, 6 METERS W OF THE EASTERLY N-S FENCE LINE
 JV5046'AND 26.4 METERS S OF WINDMILL, 24.3 METERS E OF NE CORNER OF CORN
 JV5046'CRIB, AND 23.5 METERS E OF SE CORNER OF CORN CRIB.
 JV5046'
 JV5046'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5046'DISKS SET IN CONCRETE.
 JV5046'
 JV5046'REFERENCE MARK NO.1 IS SE OF STATION AND 2 FEET W OF N-S FENCE
 JV5046'LINE.
 JV5046'
 JV5046'REFERENCE MARK NO.2 IS W OF STATION AND 1 FOOT S OF E-W FENCE LINE.
 JV5046'
 JV5046'STATION IS REACHED FROM ROCK HALL BY GOING NE OF STATE HIGHWAY
 JV5046'20 TOWARDS CHESTERTOWN 0.8 MILE, TURN RIGHT AT COLEMANS CORNER,
 JV5046'GO 1.3 MILES ON CONCRETE ROAD TO T-INTERSECTION, TURN LEFT AND
 JV5046'CONTINUE ON CONCRETE ROAD 1.3 MILES TO WHERE CONCRETE ROAD MAKES
 JV5046'A SHARP LEFT TURN, CONTINUE STRAIGHT AHEAD ON MAIN-TRAVELED
 JV5046'GRAVEL ROAD 1.6 MILES DIRECT TO ASHLEYS FARM AT END OF PINEY NECK
 JV5046'AND THE STATION.
 JV5046
 JV5046                          STATION RECOVERY (1961)
 JV5046
 JV5046'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5046'STATION MARK AND REFERENCE MARK NO.1 WERE RECOVERED IN GOOD
 JV5046'CONDITION.  REFERENCE MARK NO.2 HAS BEEN DESTROYED, THE MONUMENT
 JV5046'WITH THE DISK WAS FOUND BESIDE THE CORN CRIB.  THE PUBLISHED
 JV5046'DESCRIPTION IS ADEQUATE.
 JV5046
 JV5046                          STATION RECOVERY (1989)
 JV5046
 JV5046'RECOVERY NOTE BY MD DEPT OF NAT RES 1989 (LW)
 JV5046'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4250 ***********************************************************************
 JV4250  DESIGNATION -  ASHTON
 JV4250  PID         -  JV4250
 JV4250  STATE/COUNTY-  MD/MONTGOMERY
 JV4250  COUNTRY     -  US
 JV4250  USGS QUAD   -  SANDY SPRING (2016)
 JV4250
 JV4250                         *CURRENT SURVEY CONTROL
 JV4250  ______________________________________________________________________
 JV4250* NAD 83(1991) POSITION- 39 09 09.25452(N) 077 00 51.45523(W)   ADJUSTED
 JV4250* NAVD 88 ORTHO HEIGHT -   153.5   (meters)      504.    (feet) VERTCON3
 JV4250  ______________________________________________________________________
 JV4250  GEOID HEIGHT    -        -31.913 (meters)                     GEOID18
 JV4250  LAPLACE CORR    -         -3.58  (seconds)                    DEFLEC18
 JV4250  HORZ ORDER      -  FIRST
 JV4250
 JV4250.The horizontal coordinates were established by classical geodetic methods
 JV4250.and adjusted by the National Geodetic Survey in January 1992.
 JV4250
 JV4250.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4250.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4250
 JV4250.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4250.GEOID18 height accuracy estimate available here.
 JV4250
 JV4250.Click photographs - Photos may exist for this station.
 JV4250
 JV4250.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4250
 JV4250. The following values were computed from the NAD 83(1991) position.
 JV4250
 JV4250;                    North         East     Units Scale Factor Converg.
 JV4250;SPC MD       -   164,943.495   398,764.550   MT  0.99996148   -0 00 32.3
 JV4250;SPC MD       -   541,152.12  1,308,280.03   sFT  0.99996148   -0 00 32.3
 JV4250;UTM  18      - 4,335,639.920   325,946.685   MT  0.99997303   -1 16 19.6
 JV4250
 JV4250!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4250!SPC MD       -   0.99998093  x   0.99996148  =   0.99994241
 JV4250!UTM  18      -   0.99998093  x   0.99997303  =   0.99995396
 JV4250
 JV4250:                Primary Azimuth Mark                     Grid Az
 JV4250:SPC MD       -  ASHTON AZ MK                             230 47 31.9
 JV4250:UTM  18      -  ASHTON AZ MK                             232 03 19.2
 JV4250
 JV4250_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2594635639(NAD 83)
 JV4250
 JV4250|---------------------------------------------------------------------|
 JV4250| PID    Reference Object                     Distance      Geod. Az  |
 JV4250|                                                           dddmmss.s |
 JV4250| JV6015 CLARKSVILLE ATT MICROWAVE           APPROX. 8.1 KM 0244900.3 |
 JV4250| CK6544 ASHTON RM 1                          88.166 METERS 11543     |
 JV4250| CK6545 ASHTON RM 2                          21.574 METERS 20203     |
 JV4250| CK6543 ASHTON AZ MK                                       2304659.6 |
 JV4250| JV4248 OLNEY WSSC TANK                     APPROX. 4.4 KM 2631020.5 |
 JV4250|---------------------------------------------------------------------|
 JV4250
 JV4250                          SUPERSEDED SURVEY CONTROL
 JV4250
 JV4250  NAD 83(1986)-  39 09 09.25409(N)    077 00 51.46505(W) AD(       ) 1
 JV4250  NAD 27      -  39 09 08.86730(N)    077 00 52.54685(W) AD(       ) 1
 JV4250  NGVD 29 (07/19/86)  153.7    (m)          504.     (f) VERT ANG       
 JV4250
 JV4250.Superseded values are not recommended for survey control.
 JV4250
 JV4250.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4250.See file dsdata.pdf to determine how the superseded data were derived.
 JV4250
 JV4250_MARKER: DS = TRIANGULATION STATION DISK
 JV4250_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4250_STAMPING: ASHTON 1969
 JV4250_MARK LOGO: CGS
 JV4250_PROJECTION: RECESSED 56 CENTIMETERS
 JV4250_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4250+STABILITY: SURFACE MOTION
 JV4250
 JV4250  HISTORY     - Date     Condition        Report By
 JV4250  HISTORY     - 1969     MONUMENTED       CGS
 JV4250  HISTORY     - 19950818 MARK NOT FOUND   USPSQD
 JV4250  HISTORY     - 20150618 GOOD             PROFLN
 JV4250
 JV4250                          STATION DESCRIPTION
 JV4250
 JV4250'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4250'THE STATION IS 2-3/4 MILES EAST OF OLNEY, 3 MILES SOUTHEAST OF
 JV4250'BROOKEVILLE, 0.1 MILE WEST OF STATE HIGHWAY 650 AND ON THE
 JV4250'PROPERTY OF MR. ROBERT C. CHRISTIE.
 JV4250'
 JV4250'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 650
 JV4250'AND 108, IN THE VILLAGE OF ASHTON, GO NORTH ON STATE HIGHWAY 650
 JV4250'FOR 0.2 MILE TO A GRAVEL ROAD ON THE LEFT.  TURN LEFT, ON THE
 JV4250'GRAVEL ROAD, AND GO WEST FOR 0.1 MILE TO A SHARP RIGHT TURN IN
 JV4250'THE ROAD AND A NORTH-SOUTH LINE OF CEDAR TREES.  TURN RIGHT AND
 JV4250'GO NORTH FOR 0.05 MILE (OR JUST PAST THE FIFTH TREE) TO THE
 JV4250'STATION ON THE RIGHT.
 JV4250'
 JV4250'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE
 JV4250'HIGHWAYS 650 AND 108, GO WEST ON STATE HIGHWAY 108 FOR 0.4 MILE
 JV4250'TO THE AZIMUTH MARK ON THE LEFT WITH A METAL WITNESS POST AND
 JV4250'IN THE NORTHWEST CORNER OF THE SHERWOOD ELEMENTARY SCHOOL YARD.
 JV4250'
 JV4250'THE STATION MARK IS A STANDARD DISK, STAMPED ASHTON 1969, SET
 JV4250'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV4250'IS 15 INCHES BELOW THE SURFACE OF THE GROUND.  IT IS 18.0 FEET
 JV4250'EAST OF THE CENTERLINE OF THE GRAVEL ROAD, 32.2 FEET SOUTHEAST
 JV4250'OF A FENCE CORNER AND 17.4 FEET NORTHEAST OF A CEDAR TREE.  THE
 JV4250'UNDERGROUND MARK IS 42 INCHES BELOW GROUND SURFACE.
 JV4250'
 JV4250'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED ASHTON NO 1 1969,
 JV4250'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV4250'THAT IS FLUSH WITH THE SURFACE OF THE GROUND AND ABOUT 10 FEET
 JV4250'LOWER THAN THE STATION.  IT IS 12.5 FEET NORTH OF THE CENTERLINE
 JV4250'OF THE GRAVEL ROAD, 2.0 FEET WEST OF A POWERLINE POLE AND 44.9
 JV4250'FEET NORTHWEST OF A WOODEN SHED.  THE DISTANCE FROM THE MARK TO
 JV4250'THE AXIS OF THE TELESCOPE IS 289.54 FEET, 88.252 METERS.
 JV4250'
 JV4250'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED ASHTON NO 2 1969,
 JV4250'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV4250'THAT IS FLUSH WITH THE GROUND SURFACE AND ABOUT 2 FEET LOWER THAN
 JV4250'THE STATION.  IT IS 7.0 FEET WEST OF THE CENTERLINE OF THE GRAVEL
 JV4250'ROAD, 65.0 FEET NORTH OF A POWERLINE POLE AND 0.5 FEET EAST OF
 JV4250'A FENCE.
 JV4250'
 JV4250'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED ASHTON 1969, SET
 JV4250'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV4250'THAT PROJECTS 4 INCHES ABOVE THE GROUND SURFACE.  IT IS 1.5 FEET
 JV4250'WEST OF A METAL WITNESS POST, 1.9 FEET EAST OF TELEPHONE POLE
 JV4250'NUMBER M19 AND 15.7 FEET SOUTH OF THE CENTERLINE OF STATE HIGHWAY
 JV4250'108.
 JV4250'
 JV4250'THE DISTANCE BETWEEN RM 1 AND RM 2 WAS NOT MEASURED BECAUSE
 JV4250'OF OBSTRUCTIONS.
 JV4250
 JV4250                          STATION RECOVERY (1995)
 JV4250
 JV4250'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4250'MARK NOT FOUND.
 JV4250
 JV4250                          STATION RECOVERY (2015)
 JV4250
 JV4250'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2015 (JRO)
 JV4250'RECOVERED THE MAIN STATION AND PUT A VALVE BOX WITH 2X6 EXTENDER BOX
 JV4250'UNDER THE BOX AROUND THE MARK TO MAKE FINDING AND USING IT EASIER.  IT
 JV4250'IS 22 IN BELOW GROUND IN SOIL THAT IS EASY DIGGING.  BOTH RMS ARE
 JV4250'BELIEVED DESTROYED BY ROAD WORK.  IT IS NOT CLEAR WHO OWNS THE
 JV4250'PROPERTY THE MARK IS ON.  I TALKED TO BOTH OWNERS BUT NEITHER ONE
 JV4250'KNEW.
 JV4250'
 JV4250'TO REACH THE STATION FROM THE INTERSECTION OF MARYLAND ROUTES 108 AND
 JV4250'650 IN ASHTON, PROCEED NORTH ON SR 650 (AKA NEW HAMPSHIRE AVE) FOR 0.2
 JV4250'MI (0.3 KM) TO LETHBRIDGE CT AND TURN LEFT.  PROCEED 0.1 MI (0.2 KM)
 JV4250'UPHILL TO THE FIRST DRIVEWAY AND TURN RIGHT, OR MAYBE PARK THERE AND
 JV4250'WALK THE REST OF THE WAY.  PROCEED NORTH UP THE DRIVEWAY 124 FT (37.8
 JV4250'M) TO THE MARK ON THE RIGHT ABOUT 10 FT (3.0 M) EAST OF THE DRIVE.  IT
 JV4250'IS ROUGHLY AT THE SOUTH END OF A LINE OF BIG CEDAR TREES AND MIDWAY
 JV4250'BETWEEN THE DRIVE AND A TALL HEDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9240 ***********************************************************************
 DP9240  DESIGNATION -  ASIS 001
 DP9240  PID         -  DP9240
 DP9240  STATE/COUNTY-  MD/WORCESTER
 DP9240  COUNTRY     -  US
 DP9240  USGS QUAD   -  OCEAN CITY (2016)
 DP9240
 DP9240                         *CURRENT SURVEY CONTROL
 DP9240  ______________________________________________________________________
 DP9240* NAD 83(2011) POSITION- 38 19 00.70384(N) 075 06 03.84881(W)   ADJUSTED
 DP9240* NAD 83(2011) ELLIP HT-   -34.412 (meters)        (06/05/19)   ADJUSTED
 DP9240* NAD 83(2011) EPOCH   -  2010.00
 DP9240* NAVD 88 ORTHO HEIGHT -     1.700 (meters)        5.58  (feet) ADJUSTED
 DP9240  ______________________________________________________________________
 DP9240  GEOID HEIGHT    -        -36.075 (meters)                     GEOID18
 DP9240  NAD 83(2011) X  -  1,288,317.742 (meters)                     COMP
 DP9240  NAD 83(2011) Y  - -4,842,217.636 (meters)                     COMP
 DP9240  NAD 83(2011) Z  -  3,933,078.164 (meters)                     COMP
 DP9240  LAPLACE CORR    -         -0.53  (seconds)                    DEFLEC18
 DP9240  DYNAMIC HEIGHT  -          1.699 (meters)        5.57  (feet) COMP
 DP9240  MODELED GRAVITY -    980,006.3   (mgal)                       NAVD 88
 DP9240
 DP9240  VERT ORDER      -  SECOND    CLASS II
 DP9240
 DP9240  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9240  Standards:
 DP9240         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9240            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9240  -------------------------------------------------------------------
 DP9240  NETWORK    1.01   0.84           0.49   0.28   0.43      0.00221764
 DP9240  -------------------------------------------------------------------
 DP9240  Click here for local accuracies and other accuracy information.
 DP9240
 DP9240.The horizontal coordinates were established by GPS observations
 DP9240.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9240
 DP9240.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9240.been affixed to the stable North American tectonic plate. See 
 DP9240.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9240
 DP9240.The horizontal coordinates are valid at the epoch date displayed above
 DP9240.which is a decimal equivalence of Year/Month/Day.
 DP9240
 DP9240.The orthometric height was determined by differential leveling and
 DP9240.adjusted by the NATIONAL GEODETIC SURVEY
 DP9240.in July 2016.
 DP9240
 DP9240.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9240.GEOID18 height accuracy estimate available here.
 DP9240
 DP9240.Click photographs - Photos may exist for this station.
 DP9240
 DP9240.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9240
 DP9240.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9240
 DP9240.The ellipsoidal height was determined by GPS observations
 DP9240.and is referenced to NAD 83.
 DP9240
 DP9240.The dynamic height is computed by dividing the NAVD 88
 DP9240.geopotential number by the normal gravity value computed on the
 DP9240.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9240.degrees latitude (g = 980.6199 gals.).
 DP9240
 DP9240.The modeled gravity was interpolated from observed gravity values.
 DP9240
 DP9240. The following values were computed from the NAD 83(2011) position.
 DP9240
 DP9240;                    North         East     Units Scale Factor Converg.
 DP9240;SPC MD       -    73,901.747   566,055.119   MT  0.99999711   +1 11 30.6
 DP9240;SPC MD       -   242,459.31  1,857,132.50   sFT  0.99999711   +1 11 30.6
 DP9240;UTM  18      - 4,240,977.319   491,164.717   MT  0.99960096   -0 03 45.6
 DP9240
 DP9240!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9240!SPC MD       -   1.00000540  x   0.99999711  =   1.00000251
 DP9240!UTM  18      -   1.00000540  x   0.99960096  =   0.99960636
 DP9240
 DP9240_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9116440977(NAD 83)
 DP9240
 DP9240                          SUPERSEDED SURVEY CONTROL
 DP9240
 DP9240.No superseded survey control is available for this station.
 DP9240
 DP9240_MARKER: DD = SURVEY DISK
 DP9240_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9240_STAMPING: ASIS001 2010
 DP9240_MARK LOGO: NPS
 DP9240_PROJECTION: FLUSH
 DP9240_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9240_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9240_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9240+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9240_ROD/PIPE-DEPTH: 4.9 meters
 DP9240
 DP9240  HISTORY     - Date     Condition        Report By
 DP9240  HISTORY     - 2010     MONUMENTED       NPS
 DP9240  HISTORY     - 20150227 GOOD             NPS
 DP9240
 DP9240                          STATION DESCRIPTION
 DP9240
 DP9240'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9240'THE STATION IS LOCATED ABOUT 6.4 MI (10.3 KM) EAST OF BERLIN, 5.9 MI
 DP9240'(9.5 KM) SOUTH-SOUTHEAST OF OCEAN PINES AND 1.6 MI (2.6 KM)
 DP9240'SOUTH-SOUTHWEST OF OCEAN CITY.
 DP9240'
 DP9240'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY CONTINUE ON
 DP9240'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9240'SHELL ROAD.
 DP9240'
 DP9240'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9240'NATIONAL SEASHORE.
 DP9240'
 DP9240'THE STATION IS LOCATED NORTHWEST OF KM 1.0.  THE STATION IS 66.6 M
 DP9240'(218.5 FT) NORTHWEST OF KILOMETER POST 1.0, 55 CM (22 INCHES)
 DP9240'SOUTHEAST OF ORANGE CARSONITE WITNESS POST AND 63 M (206.7 FT)
 DP9240'NORTHEAST OF -GPS 1-.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9243 ***********************************************************************
 DP9243  DESIGNATION -  ASIS 002
 DP9243  PID         -  DP9243
 DP9243  STATE/COUNTY-  MD/WORCESTER
 DP9243  COUNTRY     -  US
 DP9243  USGS QUAD   -  OCEAN CITY (2016)
 DP9243
 DP9243                         *CURRENT SURVEY CONTROL
 DP9243  ______________________________________________________________________
 DP9243* NAD 83(2011) POSITION- 38 18 09.83676(N) 075 06 38.06146(W)   ADJUSTED
 DP9243* NAD 83(2011) ELLIP HT-   -34.749 (meters)        (06/05/19)   ADJUSTED
 DP9243* NAD 83(2011) EPOCH   -  2010.00
 DP9243* NAVD 88 ORTHO HEIGHT -     1.373 (meters)        4.50  (feet) ADJUSTED
 DP9243  ______________________________________________________________________
 DP9243  GEOID HEIGHT    -        -36.090 (meters)                     GEOID18
 DP9243  NAD 83(2011) X  -  1,287,764.324 (meters)                     COMP
 DP9243  NAD 83(2011) Y  - -4,843,370.646 (meters)                     COMP
 DP9243  NAD 83(2011) Z  -  3,931,847.257 (meters)                     COMP
 DP9243  LAPLACE CORR    -         -0.46  (seconds)                    DEFLEC18
 DP9243  DYNAMIC HEIGHT  -          1.372 (meters)        4.50  (feet) COMP
 DP9243  MODELED GRAVITY -    980,004.6   (mgal)                       NAVD 88
 DP9243
 DP9243  VERT ORDER      -  SECOND    CLASS II
 DP9243
 DP9243  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9243  Standards:
 DP9243         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9243            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9243  -------------------------------------------------------------------
 DP9243  NETWORK    1.01   0.86           0.49   0.28   0.44      0.00373533
 DP9243  -------------------------------------------------------------------
 DP9243  Click here for local accuracies and other accuracy information.
 DP9243
 DP9243.The horizontal coordinates were established by GPS observations
 DP9243.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9243
 DP9243.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9243.been affixed to the stable North American tectonic plate. See 
 DP9243.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9243
 DP9243.The horizontal coordinates are valid at the epoch date displayed above
 DP9243.which is a decimal equivalence of Year/Month/Day.
 DP9243
 DP9243.The orthometric height was determined by differential leveling and
 DP9243.adjusted by the NATIONAL GEODETIC SURVEY
 DP9243.in July 2016.
 DP9243
 DP9243.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9243.GEOID18 height accuracy estimate available here.
 DP9243
 DP9243.Click photographs - Photos may exist for this station.
 DP9243
 DP9243.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9243
 DP9243.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9243
 DP9243.The ellipsoidal height was determined by GPS observations
 DP9243.and is referenced to NAD 83.
 DP9243
 DP9243.The dynamic height is computed by dividing the NAVD 88
 DP9243.geopotential number by the normal gravity value computed on the
 DP9243.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9243.degrees latitude (g = 980.6199 gals.).
 DP9243
 DP9243.The modeled gravity was interpolated from observed gravity values.
 DP9243
 DP9243. The following values were computed from the NAD 83(2011) position.
 DP9243
 DP9243;                    North         East     Units Scale Factor Converg.
 DP9243;SPC MD       -    72,316.407   565,256.648   MT  0.99999953   +1 11 09.1
 DP9243;SPC MD       -   237,258.08  1,854,512.85   sFT  0.99999953   +1 11 09.1
 DP9243;UTM  18      - 4,239,410.462   490,332.061   MT  0.99960115   -0 04 06.7
 DP9243
 DP9243!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9243!SPC MD       -   1.00000545  x   0.99999953  =   1.00000498
 DP9243!UTM  18      -   1.00000545  x   0.99960115  =   0.99960660
 DP9243
 DP9243_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9033239410(NAD 83)
 DP9243
 DP9243                          SUPERSEDED SURVEY CONTROL
 DP9243
 DP9243.No superseded survey control is available for this station.
 DP9243
 DP9243_MARKER: DD = SURVEY DISK
 DP9243_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9243_STAMPING: ASIS002 2010
 DP9243_MARK LOGO: NPS
 DP9243_PROJECTION: FLUSH
 DP9243_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9243_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9243_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9243+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9243_ROD/PIPE-DEPTH: 6.1 meters
 DP9243
 DP9243  HISTORY     - Date     Condition        Report By
 DP9243  HISTORY     - 2010     MONUMENTED       NPS
 DP9243  HISTORY     - 20150227 GOOD             NPS
 DP9243
 DP9243                          STATION DESCRIPTION
 DP9243
 DP9243'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9243'THE STATION IS LOCATED ABOUT 6.5 MI (10.5 KM) SOUTH-SOUTHEAST OF OCEAN
 DP9243'PINES, 6.0 MI (9.7 KM) EAST-SOUTHEAST OF BERLIN AND 2.7 MI (4.3 KM)
 DP9243'SOUTH-SOUTHWEST OF OCEAN CITY.
 DP9243'
 DP9243'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY.  CONTINUE ON
 DP9243'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9243'SHELL ROAD.
 DP9243'
 DP9243'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9243'NATIONAL SEASHORE.
 DP9243'
 DP9243'THE STATION IS LOCATED SOUTHWEST OF KM 2.5.  THE STATION IS LOCATED
 DP9243'198 M (649.6 FT) SOUTHWEST OF KILOMETER POST 2.5, 189 M (620.1 FT)
 DP9243'NORTHWEST OF NORTHERNMOST GROUNDWATER WELL AND 65 CM (26 INCHES)
 DP9243'SOUTHEAST OF ORANGE CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9246 ***********************************************************************
 DP9246  DESIGNATION -  ASIS 003R
 DP9246  PID         -  DP9246
 DP9246  STATE/COUNTY-  MD/WORCESTER
 DP9246  COUNTRY     -  US
 DP9246  USGS QUAD   -  OCEAN CITY (2016)
 DP9246
 DP9246                         *CURRENT SURVEY CONTROL
 DP9246  ______________________________________________________________________
 DP9246* NAD 83(2011) POSITION- 38 17 04.07552(N) 075 07 05.28210(W)   ADJUSTED
 DP9246* NAD 83(2011) ELLIP HT-   -35.202 (meters)        (06/05/19)   ADJUSTED
 DP9246* NAD 83(2011) EPOCH   -  2010.00
 DP9246* NAVD 88 ORTHO HEIGHT -     0.941 (meters)        3.09  (feet) ADJUSTED
 DP9246  ______________________________________________________________________
 DP9246  GEOID HEIGHT    -        -36.110 (meters)                     GEOID18
 DP9246  NAD 83(2011) X  -  1,287,447.754 (meters)                     COMP
 DP9246  NAD 83(2011) Y  - -4,844,754.585 (meters)                     COMP
 DP9246  NAD 83(2011) Z  -  3,930,255.573 (meters)                     COMP
 DP9246  LAPLACE CORR    -         -0.34  (seconds)                    DEFLEC18
 DP9246  DYNAMIC HEIGHT  -          0.940 (meters)        3.08  (feet) COMP
 DP9246  MODELED GRAVITY -    980,002.5   (mgal)                       NAVD 88
 DP9246
 DP9246  VERT ORDER      -  SECOND    CLASS II
 DP9246
 DP9246  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9246  Standards:
 DP9246         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9246            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9246  -------------------------------------------------------------------
 DP9246  NETWORK    0.97   0.80           0.47   0.26   0.41      0.00924492
 DP9246  -------------------------------------------------------------------
 DP9246  Click here for local accuracies and other accuracy information.
 DP9246
 DP9246.The horizontal coordinates were established by GPS observations
 DP9246.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9246
 DP9246.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9246.been affixed to the stable North American tectonic plate. See 
 DP9246.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9246
 DP9246.The horizontal coordinates are valid at the epoch date displayed above
 DP9246.which is a decimal equivalence of Year/Month/Day.
 DP9246
 DP9246.The orthometric height was determined by differential leveling and
 DP9246.adjusted by the NATIONAL GEODETIC SURVEY
 DP9246.in July 2016.
 DP9246
 DP9246.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9246.GEOID18 height accuracy estimate available here.
 DP9246
 DP9246.Click photographs - Photos may exist for this station.
 DP9246
 DP9246.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9246
 DP9246.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9246
 DP9246.The ellipsoidal height was determined by GPS observations
 DP9246.and is referenced to NAD 83.
 DP9246
 DP9246.The dynamic height is computed by dividing the NAVD 88
 DP9246.geopotential number by the normal gravity value computed on the
 DP9246.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9246.degrees latitude (g = 980.6199 gals.).
 DP9246
 DP9246.The modeled gravity was interpolated from observed gravity values.
 DP9246
 DP9246. The following values were computed from the NAD 83(2011) position.
 DP9246
 DP9246;                    North         East     Units Scale Factor Converg.
 DP9246;SPC MD       -    70,275.499   564,637.198   MT  1.00000274   +1 10 52.0
 DP9246;SPC MD       -   230,562.20  1,852,480.54   sFT  1.00000274   +1 10 52.0
 DP9246;UTM  18      - 4,237,384.415   489,668.349   MT  0.99960131   -0 04 23.5
 DP9246
 DP9246!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9246!SPC MD       -   1.00000552  x   1.00000274  =   1.00000826
 DP9246!UTM  18      -   1.00000552  x   0.99960131  =   0.99960683
 DP9246
 DP9246_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8966837384(NAD 83)
 DP9246
 DP9246                          SUPERSEDED SURVEY CONTROL
 DP9246
 DP9246.No superseded survey control is available for this station.
 DP9246
 DP9246_MARKER: DD = SURVEY DISK
 DP9246_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9246_STAMPING: ASIS003R 2010
 DP9246_MARK LOGO: NPS
 DP9246_PROJECTION: FLUSH
 DP9246_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9246_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9246_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9246+SATELLITE: SATELLITE OBSERVATIONS - November 06, 2018
 DP9246_ROD/PIPE-DEPTH: 18.3 meters
 DP9246
 DP9246  HISTORY     - Date     Condition        Report By
 DP9246  HISTORY     - 2010     MONUMENTED       NPS
 DP9246  HISTORY     - 20150227 GOOD             NPS
 DP9246  HISTORY     - 20181106 GOOD             NPS
 DP9246
 DP9246                          STATION DESCRIPTION
 DP9246
 DP9246'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9246'THE STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) SOUTH-SOUTHEAST OF OCEAN
 DP9246'PINES, 6.0 MI (9.7 KM) EAST-SOUTHEAST OF BERLIN AND 4.0 MI (6.4 KM)
 DP9246'SOUTH-SOUTHWEST OF OCEAN CITY.
 DP9246'
 DP9246'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY.  CONTINUE ON
 DP9246'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9246'SHELL ROAD.
 DP9246'
 DP9246'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9246'NATIONAL SEASHORE.
 DP9246'
 DP9246'THE STATION IS LOCATED NORTHWEST OF KM 5.0.  THE STATION IS 245.6 M
 DP9246'(805.8 FT) NORTHWEST OF KILOMETER POST 5.0, 102.8 M (337.3 FT)
 DP9246'SOUTHWEST OF KILOMETER POST 4.75 AND 72 CM (28 INCHES) SOUTHEAST OF
 DP9246'ORANGE CARSONITE WITNESS POST.
 DP9246
 DP9246                          STATION RECOVERY (2018)
 DP9246
 DP9246'RECOVERY NOTE BY NATIONAL PARK SERVICE 2018 (NTW)
 DP9246'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9250 ***********************************************************************
 DP9250  DESIGNATION -  ASIS 004
 DP9250  PID         -  DP9250
 DP9250  STATE/COUNTY-  MD/WORCESTER
 DP9250  COUNTRY     -  US
 DP9250  USGS QUAD   -  BERLIN (2016)
 DP9250
 DP9250                         *CURRENT SURVEY CONTROL
 DP9250  ______________________________________________________________________
 DP9250* NAD 83(1986) POSITION- 38 15 50.     (N) 075 07 35.     (W)   SCALED
 DP9250* NAVD 88 ORTHO HEIGHT -     0.761 (meters)        2.50  (feet) ADJUSTED
 DP9250  ______________________________________________________________________
 DP9250  GEOID HEIGHT    -        -36.134 (meters)                     GEOID18
 DP9250  DYNAMIC HEIGHT  -          0.761 (meters)        2.50  (feet) COMP
 DP9250  MODELED GRAVITY -    979,999.9   (mgal)                       NAVD 88
 DP9250
 DP9250  VERT ORDER      -  SECOND    CLASS II
 DP9250
 DP9250.The horizontal coordinates were scaled from a map and have
 DP9250.an estimated accuracy of +/- 6 seconds.
 DP9250
 DP9250.The orthometric height was determined by differential leveling and
 DP9250.adjusted by the NATIONAL GEODETIC SURVEY
 DP9250.in July 2016.
 DP9250
 DP9250.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9250.GEOID18 height accuracy estimate available here.
 DP9250
 DP9250.Click photographs - Photos may exist for this station.
 DP9250
 DP9250.The dynamic height is computed by dividing the NAVD 88
 DP9250.geopotential number by the normal gravity value computed on the
 DP9250.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9250.degrees latitude (g = 980.6199 gals.).
 DP9250
 DP9250.The modeled gravity was interpolated from observed gravity values.
 DP9250
 DP9250;                    North         East    Units  Estimated Accuracy
 DP9250;SPC MD       -    67,980.      563,960.      MT  (+/- 180 meters Scaled)
 DP9250
 DP9250_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH889351(NAD 83)
 DP9250
 DP9250                          SUPERSEDED SURVEY CONTROL
 DP9250
 DP9250.No superseded survey control is available for this station.
 DP9250
 DP9250_MARKER: F = FLANGE-ENCASED ROD
 DP9250_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP9250_MARK LOGO: NPS
 DP9250_PROJECTION: RECESSED 22 CENTIMETERS
 DP9250_MAGNETIC: I = MARKER IS A STEEL ROD
 DP9250_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DP9250_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP9250+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9250_ROD/PIPE-DEPTH: 7.3 meters
 DP9250
 DP9250  HISTORY     - Date     Condition        Report By
 DP9250  HISTORY     - 2010     MONUMENTED       NPS
 DP9250  HISTORY     - 20150227 GOOD             NPS
 DP9250
 DP9250                          STATION DESCRIPTION
 DP9250
 DP9250'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9250'THE STATION IS LOCATED ABOUT 8.8 MI (14.2 KM) SOUTH-SOUTHEAST OF OCEAN
 DP9250'PINES, 6.4 MI (10.3 KM) SOUTHEAST OF BERLIN AND 5.5 MI (8.8 KM)
 DP9250'SOUTH-SOUTHWEST OF OCEAN CITY.
 DP9250'
 DP9250'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY.  CONTINUE ON
 DP9250'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9250'SHELL ROAD.
 DP9250'
 DP9250'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9250'NATIONAL SEASHORE.
 DP9250'
 DP9250'THE STATION IS LOCATED NEAR KILOMETER 7.0.  THE STATION IS 107 M
 DP9250'(351.0 FT) SOUTHEAST OF KILOMETER POST 7.0, 50 CM (20 INCHES) SOUTH OF
 DP9250'THE ORANGE CARSONITE WITNESS POST FOR 2010ASIS004 AND 465 M (1525.6
 DP9250'FT) SOUTHEAST OF THE TIDE STATION IN SINEPUXENT BAY.
 DP9250'
 DP9250'NOTE-THE MARK TENDS TO BE UNDERWATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9255 ***********************************************************************
 DP9255  DESIGNATION -  ASIS 005R
 DP9255  PID         -  DP9255
 DP9255  STATE/COUNTY-  MD/WORCESTER
 DP9255  COUNTRY     -  US
 DP9255  USGS QUAD   -  TINGLES ISLAND (2016)
 DP9255
 DP9255                         *CURRENT SURVEY CONTROL
 DP9255  ______________________________________________________________________
 DP9255* NAD 83(2011) POSITION- 38 14 52.48918(N) 075 07 59.23781(W)   ADJUSTED
 DP9255* NAD 83(2011) ELLIP HT-   -34.761 (meters)        (06/05/19)   ADJUSTED
 DP9255* NAD 83(2011) EPOCH   -  2010.00
 DP9255* NAVD 88 ORTHO HEIGHT -     1.421 (meters)        4.66  (feet) ADJUSTED
 DP9255  ______________________________________________________________________
 DP9255  GEOID HEIGHT    -        -36.153 (meters)                     GEOID18
 DP9255  NAD 83(2011) X  -  1,286,825.189 (meters)                     COMP
 DP9255  NAD 83(2011) Y  - -4,847,520.152 (meters)                     COMP
 DP9255  NAD 83(2011) Z  -  3,927,070.306 (meters)                     COMP
 DP9255  LAPLACE CORR    -         -0.07  (seconds)                    DEFLEC18
 DP9255  DYNAMIC HEIGHT  -          1.421 (meters)        4.66  (feet) COMP
 DP9255  MODELED GRAVITY -    979,997.9   (mgal)                       NAVD 88
 DP9255
 DP9255  VERT ORDER      -  SECOND    CLASS II
 DP9255
 DP9255  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9255  Standards:
 DP9255         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9255            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9255  -------------------------------------------------------------------
 DP9255  NETWORK    0.84   0.65           0.42   0.17   0.33      0.04220843
 DP9255  -------------------------------------------------------------------
 DP9255  Click here for local accuracies and other accuracy information.
 DP9255
 DP9255.The horizontal coordinates were established by GPS observations
 DP9255.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9255
 DP9255.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9255.been affixed to the stable North American tectonic plate. See 
 DP9255.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9255
 DP9255.The horizontal coordinates are valid at the epoch date displayed above
 DP9255.which is a decimal equivalence of Year/Month/Day.
 DP9255
 DP9255.The orthometric height was determined by differential leveling and
 DP9255.adjusted by the NATIONAL GEODETIC SURVEY
 DP9255.in July 2016.
 DP9255
 DP9255.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9255.GEOID18 height accuracy estimate available here.
 DP9255
 DP9255.Click photographs - Photos may exist for this station.
 DP9255
 DP9255.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9255
 DP9255.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9255
 DP9255.The ellipsoidal height was determined by GPS observations
 DP9255.and is referenced to NAD 83.
 DP9255
 DP9255.The dynamic height is computed by dividing the NAVD 88
 DP9255.geopotential number by the normal gravity value computed on the
 DP9255.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9255.degrees latitude (g = 980.6199 gals.).
 DP9255
 DP9255.The modeled gravity was interpolated from observed gravity values.
 DP9255
 DP9255. The following values were computed from the NAD 83(2011) position.
 DP9255
 DP9255;                    North         East     Units Scale Factor Converg.
 DP9255;SPC MD       -    66,192.100   563,409.134   MT  1.00000947   +1 10 18.2
 DP9255;SPC MD       -   217,165.25  1,848,451.47   sFT  1.00000947   +1 10 18.2
 DP9255;UTM  18      - 4,233,330.515   488,351.731   MT  0.99960167   -0 04 56.7
 DP9255
 DP9255!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9255!SPC MD       -   1.00000545  x   1.00000947  =   1.00001492
 DP9255!UTM  18      -   1.00000545  x   0.99960167  =   0.99960712
 DP9255
 DP9255_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8835133330(NAD 83)
 DP9255
 DP9255                          SUPERSEDED SURVEY CONTROL
 DP9255
 DP9255.No superseded survey control is available for this station.
 DP9255
 DP9255_MARKER: F = FLANGE-ENCASED ROD
 DP9255_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP9255_MARK LOGO: NPS
 DP9255_PROJECTION: FLUSH
 DP9255_MAGNETIC: I = MARKER IS A STEEL ROD
 DP9255_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9255_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9255+SATELLITE: SATELLITE OBSERVATIONS - November 06, 2018
 DP9255_ROD/PIPE-DEPTH: 23.2 meters
 DP9255_SLEEVE-DEPTH  : 0.9 meters
 DP9255
 DP9255  HISTORY     - Date     Condition        Report By
 DP9255  HISTORY     - 2012     MONUMENTED       NPS
 DP9255  HISTORY     - 20150227 GOOD             NPS
 DP9255  HISTORY     - 20181106 GOOD             NPS
 DP9255
 DP9255                          STATION DESCRIPTION
 DP9255
 DP9255'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9255'THE STATION IS LOCATED ABOUT 8.6 MI (13.8 KM) EAST OF NEWARK, 6.9 MI
 DP9255'(11.1 KM) SOUTHEAST OF BERLIN AND 6.6 MI (10.6 KM) SOUTH-SOUTHWEST OF
 DP9255'OCEAN CITY.
 DP9255'
 DP9255'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY.  CONTINUE ON
 DP9255'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9255'SHELL ROAD.
 DP9255'
 DP9255'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9255'NATIONAL SEASHORE.
 DP9255'
 DP9255'THE STATION IS 96.0 M (315.0 FT) NORTHWEST OF KILOMETER POST 9.0, 10.9
 DP9255'M (35.8 FT) NORTHWEST OR DG29 GROUNDWATER WELL AND 11.4 M (37.4 FT)
 DP9255'NORTHWEST OF DG30 GROUNDWATER WELL.
 DP9255
 DP9255                          STATION RECOVERY (2018)
 DP9255
 DP9255'RECOVERY NOTE BY NATIONAL PARK SERVICE 2018 (NTW)
 DP9255'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9264 ***********************************************************************
 DP9264  DESIGNATION -  ASIS 006
 DP9264  PID         -  DP9264
 DP9264  STATE/COUNTY-  MD/WORCESTER
 DP9264  COUNTRY     -  US
 DP9264  USGS QUAD   -  TINGLES ISLAND (2016)
 DP9264
 DP9264                         *CURRENT SURVEY CONTROL
 DP9264  ______________________________________________________________________
 DP9264* NAD 83(2011) POSITION- 38 12 24.29373(N) 075 09 05.13914(W)   ADJUSTED
 DP9264* NAD 83(2011) ELLIP HT-   -33.642 (meters)        (06/05/19)   ADJUSTED
 DP9264* NAD 83(2011) EPOCH   -  2010.00
 DP9264* NAVD 88 ORTHO HEIGHT -     2.608 (meters)        8.56  (feet) ADJUSTED
 DP9264  ______________________________________________________________________
 DP9264  GEOID HEIGHT    -        -36.204 (meters)                     GEOID18
 DP9264  NAD 83(2011) X  -  1,286,001.149 (meters)                     COMP
 DP9264  NAD 83(2011) Y  - -4,850,664.922 (meters)                     COMP
 DP9264  NAD 83(2011) Z  -  3,923,481.478 (meters)                     COMP
 DP9264  LAPLACE CORR    -          0.22  (seconds)                    DEFLEC18
 DP9264  DYNAMIC HEIGHT  -          2.607 (meters)        8.55  (feet) COMP
 DP9264  MODELED GRAVITY -    979,992.4   (mgal)                       NAVD 88
 DP9264
 DP9264  VERT ORDER      -  SECOND    CLASS II
 DP9264
 DP9264  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9264  Standards:
 DP9264         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9264            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9264  -------------------------------------------------------------------
 DP9264  NETWORK    1.01   0.86           0.49   0.28   0.44     -0.00869429
 DP9264  -------------------------------------------------------------------
 DP9264  Click here for local accuracies and other accuracy information.
 DP9264
 DP9264.The horizontal coordinates were established by GPS observations
 DP9264.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9264
 DP9264.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9264.been affixed to the stable North American tectonic plate. See 
 DP9264.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9264
 DP9264.The horizontal coordinates are valid at the epoch date displayed above
 DP9264.which is a decimal equivalence of Year/Month/Day.
 DP9264
 DP9264.The orthometric height was determined by differential leveling and
 DP9264.adjusted by the NATIONAL GEODETIC SURVEY
 DP9264.in July 2016.
 DP9264
 DP9264.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9264.GEOID18 height accuracy estimate available here.
 DP9264
 DP9264.Click photographs - Photos may exist for this station.
 DP9264
 DP9264.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9264
 DP9264.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9264
 DP9264.The ellipsoidal height was determined by GPS observations
 DP9264.and is referenced to NAD 83.
 DP9264
 DP9264.The dynamic height is computed by dividing the NAVD 88
 DP9264.geopotential number by the normal gravity value computed on the
 DP9264.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9264.degrees latitude (g = 980.6199 gals.).
 DP9264
 DP9264.The modeled gravity was interpolated from observed gravity values.
 DP9264
 DP9264. The following values were computed from the NAD 83(2011) position.
 DP9264
 DP9264;                    North         East     Units Scale Factor Converg.
 DP9264;SPC MD       -    61,590.975   561,899.548   MT  1.00001753   +1 09 36.8
 DP9264;SPC MD       -   202,069.72  1,843,498.77   sFT  1.00001753   +1 09 36.8
 DP9264;UTM  18      - 4,228,765.409   486,742.475   MT  0.99960216   -0 05 37.2
 DP9264
 DP9264!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9264!SPC MD       -   1.00000528  x   1.00001753  =   1.00002281
 DP9264!UTM  18      -   1.00000528  x   0.99960216  =   0.99960744
 DP9264
 DP9264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8674228765(NAD 83)
 DP9264
 DP9264                          SUPERSEDED SURVEY CONTROL
 DP9264
 DP9264.No superseded survey control is available for this station.
 DP9264
 DP9264_MARKER: DD = SURVEY DISK
 DP9264_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9264_STAMPING: ASIS006 2010
 DP9264_MARK LOGO: NPS
 DP9264_PROJECTION: RECESSED 6 CENTIMETERS
 DP9264_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9264_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9264_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9264+SATELLITE: SATELLITE OBSERVATIONS - September 21, 2023
 DP9264_ROD/PIPE-DEPTH: 4.9 meters
 DP9264
 DP9264  HISTORY     - Date     Condition        Report By
 DP9264  HISTORY     - 2010     MONUMENTED       NPS
 DP9264  HISTORY     - 20150227 GOOD             NPS
 DP9264  HISTORY     - 20230921 GOOD             BASE9
 DP9264
 DP9264                          STATION DESCRIPTION
 DP9264
 DP9264'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9264'THE STATION IS LOCATED ABOUT 9.6 MI (15.4 KM) SOUTH-SOUTHWEST OF OCEAN
 DP9264'CITY, 8.8 MI (14.2 KM) SOUTH-SOUTHEAST OF BERLIN AND 8.2 MI (13.2 KM)
 DP9264'EAST-SOUTHEAST OF NEWARK.
 DP9264'
 DP9264'TO REACH FROM THE INTERSECTION OF SR611 AND BAYBERRY DRIVE.  TURN
 DP9264'RIGHT/DRIVE SOUTH ON BAYBERRY DRIVE.
 DP9264'
 DP9264'THE STATION IS LOCATED NEAR NORTH BEACH PARKING LOT.  THE STATION IS
 DP9264'36.1 M (118.4 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF THE BATHHOUSE,
 DP9264'49.7 M (163.1 FT) NORTHEAST OF THE NORTHWEST CORNER OF THE BEACH HUT
 DP9264'AND 98.7 M (323.8 FT) NORTHEAST OF THE SMALL GROUP OF SOLAR PANELS AT
 DP9264'THE SOUTHERN END OF THE PARKING LOT.
 DP9264
 DP9264                          STATION RECOVERY (2023)
 DP9264
 DP9264'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2023 (DRD)
 DP9264'THE MARK IS FLUSH AND DISK IS 0.06 M (0.2 FT) BELOW THE LID OF AN
 DP9264'ALUMINUM COLLAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2408 ***********************************************************************
 DR2408  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2408  DESIGNATION -  ASIS 008
 DR2408  PID         -  DR2408
 DR2408  STATE/COUNTY-  MD/WORCESTER
 DR2408  COUNTRY     -  US
 DR2408  USGS QUAD   -  TINGLES ISLAND (2016)
 DR2408
 DR2408                         *CURRENT SURVEY CONTROL
 DR2408  ______________________________________________________________________
 DR2408* NAD 83(2011) POSITION- 38 07 31.76144(N) 075 10 59.07062(W)   ADJUSTED
 DR2408* NAD 83(2011) ELLIP HT-   -35.108 (meters)        (06/05/19)   ADJUSTED
 DR2408* NAD 83(2011) EPOCH   -  2010.00
 DR2408* NAVD 88 ORTHO HEIGHT -     1.24  (meters)        4.1   (feet) GPS OBS
 DR2408  ______________________________________________________________________
 DR2408  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2408  GEOID HEIGHT    -        -36.298 (meters)                     GEOID12B
 DR2408  GEOID HEIGHT    -        -36.303 (meters)                     GEOID18
 DR2408  NAD 83(2011) X  -  1,284,746.722 (meters)                     COMP
 DR2408  NAD 83(2011) Y  - -4,856,761.707 (meters)                     COMP
 DR2408  NAD 83(2011) Z  -  3,916,389.109 (meters)                     COMP
 DR2408  LAPLACE CORR    -          0.69  (seconds)                    DEFLEC18
 DR2408
 DR2408  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2408  Standards:
 DR2408         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2408            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2408  -------------------------------------------------------------------
 DR2408  NETWORK    0.94   0.78           0.46   0.24   0.40      0.00902421
 DR2408  -------------------------------------------------------------------
 DR2408  Click here for local accuracies and other accuracy information.
 DR2408
 DR2408.The horizontal coordinates were established by GPS observations
 DR2408.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2408
 DR2408.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2408.been affixed to the stable North American tectonic plate. See 
 DR2408.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2408
 DR2408.The horizontal coordinates are valid at the epoch date displayed above
 DR2408.which is a decimal equivalence of Year/Month/Day.
 DR2408
 DR2408.The orthometric height was determined by GPS observations and a
 DR2408.high-resolution geoid model using precise GPS observation and
 DR2408.processing techniques.
 DR2408
 DR2408.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2408.GEOID18 height accuracy estimate available here.
 DR2408
 DR2408.Click photographs - Photos may exist for this station.
 DR2408
 DR2408.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2408
 DR2408.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2408
 DR2408.The ellipsoidal height was determined by GPS observations
 DR2408.and is referenced to NAD 83.
 DR2408
 DR2408. The following values were computed from the NAD 83(2011) position.
 DR2408
 DR2408;                    North         East     Units Scale Factor Converg.
 DR2408;SPC MD       -    52,517.165   559,307.704   MT  1.00003494   +1 08 25.3
 DR2408;SPC MD       -   172,300.07  1,834,995.36   sFT  1.00003494   +1 08 25.3
 DR2408;UTM  18      - 4,219,754.293   483,953.911   MT  0.99960317   -0 06 46.9
 DR2408
 DR2408!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2408!SPC MD       -   1.00000551  x   1.00003494  =   1.00004045
 DR2408!UTM  18      -   1.00000551  x   0.99960317  =   0.99960868
 DR2408
 DR2408_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8395319754(NAD 83)
 DR2408
 DR2408                          SUPERSEDED SURVEY CONTROL
 DR2408
 DR2408.No superseded survey control is available for this station.
 DR2408
 DR2408_MARKER: DD = SURVEY DISK
 DR2408_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DR2408_STAMPING: 2010ASIS008
 DR2408_MARK LOGO: NPS
 DR2408_PROJECTION: FLUSH
 DR2408_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2408_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2408_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2408+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 DR2408_ROD/PIPE-DEPTH: 4.9 meters
 DR2408_SLEEVE-DEPTH  : 0.9 meters
 DR2408
 DR2408  HISTORY     - Date     Condition        Report By
 DR2408  HISTORY     - 20150316 MONUMENTED       NPS
 DR2408
 DR2408                          STATION DESCRIPTION
 DR2408
 DR2408'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DR2408'THE STATION IS LOCATED ABOUT 11.9 MI (19.2 KM) EAST OF GIRDLETREE,
 DR2408'10.4 MI (16.8 KM) SOUTHEAST OF NEWARK AND 9.1 MI (14.6 KM) EAST OF
 DR2408'BOXIRON.
 DR2408'
 DR2408'THE STATION IS LOCATED AT KM 23.4 IN THE OSV ZONE (FOX HILLS). FROM
 DR2408'BAYBERRY DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL
 DR2408'DRIVE REQUIRED). DRIVE SOUTH ON THE BEACH 7.4 KM (4.6 MI) AND TURN
 DR2408'RIGHT ONTO FOX HILLS ROAD. CONTINUE 202.9 M (665.7 FT) TO A SMALL
 DR2408'PULLOFF ON THE LEFT, THEN CONTINUE NORTHWEST ON FOOT FOR 26 M (86 FT).
 DR2408'THE STATION IS 40 CM (15.7 IN) EAST OF AN ORANGE CARSONITE WITNESS
 DR2408'POST AND IS SET BY PROJECTING CONCRETE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2412 ***********************************************************************
 DR2412  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2412  DESIGNATION -  ASIS 009
 DR2412  PID         -  DR2412
 DR2412  STATE/COUNTY-  MD/WORCESTER
 DR2412  COUNTRY     -  US
 DR2412  USGS QUAD   -  WHITTINGTON POINT (2016)
 DR2412
 DR2412                         *CURRENT SURVEY CONTROL
 DR2412  ______________________________________________________________________
 DR2412* NAD 83(2011) POSITION- 38 04 55.88840(N) 075 12 18.95336(W)   ADJUSTED
 DR2412* NAD 83(2011) ELLIP HT-   -34.996 (meters)        (06/05/19)   ADJUSTED
 DR2412* NAD 83(2011) EPOCH   -  2010.00
 DR2412* NAVD 88 ORTHO HEIGHT -     1.40  (meters)        4.6   (feet) GPS OBS
 DR2412  ______________________________________________________________________
 DR2412  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2412  GEOID HEIGHT    -        -36.350 (meters)                     GEOID12B
 DR2412  GEOID HEIGHT    -        -36.357 (meters)                     GEOID18
 DR2412  NAD 83(2011) X  -  1,283,623.028 (meters)                     COMP
 DR2412  NAD 83(2011) Y  - -4,860,126.387 (meters)                     COMP
 DR2412  NAD 83(2011) Z  -  3,912,607.374 (meters)                     COMP
 DR2412  LAPLACE CORR    -          0.72  (seconds)                    DEFLEC18
 DR2412
 DR2412  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2412  Standards:
 DR2412         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2412            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2412  -------------------------------------------------------------------
 DR2412  NETWORK    1.04   0.86           0.50   0.29   0.44     -0.01311225
 DR2412  -------------------------------------------------------------------
 DR2412  Click here for local accuracies and other accuracy information.
 DR2412
 DR2412.The horizontal coordinates were established by GPS observations
 DR2412.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2412
 DR2412.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2412.been affixed to the stable North American tectonic plate. See 
 DR2412.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2412
 DR2412.The horizontal coordinates are valid at the epoch date displayed above
 DR2412.which is a decimal equivalence of Year/Month/Day.
 DR2412
 DR2412.The orthometric height was determined by GPS observations and a
 DR2412.high-resolution geoid model using precise GPS observation and
 DR2412.processing techniques.
 DR2412
 DR2412.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2412.GEOID18 height accuracy estimate available here.
 DR2412
 DR2412.Click photographs - Photos may exist for this station.
 DR2412
 DR2412.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2412
 DR2412.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2412
 DR2412.The ellipsoidal height was determined by GPS observations
 DR2412.and is referenced to NAD 83.
 DR2412
 DR2412. The following values were computed from the NAD 83(2011) position.
 DR2412
 DR2412;                    North         East     Units Scale Factor Converg.
 DR2412;SPC MD       -    47,673.398   557,456.855   MT  1.00004503   +1 07 35.2
 DR2412;SPC MD       -   156,408.47  1,828,923.03   sFT  1.00004503   +1 07 35.2
 DR2412;UTM  18      - 4,214,954.260   481,998.420   MT  0.99960399   -0 07 35.8
 DR2412
 DR2412!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2412!SPC MD       -   1.00000549  x   1.00004503  =   1.00005052
 DR2412!UTM  18      -   1.00000549  x   0.99960399  =   0.99960948
 DR2412
 DR2412_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8199814954(NAD 83)
 DR2412
 DR2412                          SUPERSEDED SURVEY CONTROL
 DR2412
 DR2412.No superseded survey control is available for this station.
 DR2412
 DR2412_MARKER: DD = SURVEY DISK
 DR2412_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DR2412_STAMPING: 2010ASIS009
 DR2412_MARK LOGO: NPS
 DR2412_PROJECTION: FLUSH
 DR2412_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2412_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2412_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2412+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 DR2412_ROD/PIPE-DEPTH: 4.9 meters
 DR2412_SLEEVE-DEPTH  : 0.9 meters
 DR2412
 DR2412  HISTORY     - Date     Condition        Report By
 DR2412  HISTORY     - 20150316 MONUMENTED       NPS
 DR2412
 DR2412                          STATION DESCRIPTION
 DR2412
 DR2412'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DR2412'THE STATION IS LOCATED ABOUT 11.3 MI (18.2 KM) EAST OF STOCKTON, 10.5
 DR2412'MI (17.0 KM) EAST OF GIRDLETREE AND 8.2 MI (13.2 KM) EAST-SOUTHEAST OF
 DR2412'BOXIRON.
 DR2412'
 DR2412'THE STATION IS LOCATED AT KM 28.5 IN THE OSV ZONE (VALENTINES). FROM
 DR2412'BAYBERRY DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL
 DR2412'DRIVE REQUIRED). DRIVE SOUTH ON THE BEACH 12.5 KM (7.8 MI), TURN RIGHT
 DR2412'ONTO VALENTINES ROAD AND CONTINUE FOR 200 M (656 FT).
 DR2412'
 DR2412'THE STATION IS 13 M (42.7 FT) EAST OF THE CENTER-LINE OF THE ROAD, AND
 DR2412'47 CM (18.5 IN) NORTH-NORTHWEST OF AN ORANGE CARSONITE WITNESS POST.
 DR2412'VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND NATIONAL
 DR2412'SEASHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2416 ***********************************************************************
 DR2416  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2416  DESIGNATION -  ASIS 010R
 DR2416  PID         -  DR2416
 DR2416  STATE/COUNTY-  MD/WORCESTER
 DR2416  COUNTRY     -  US
 DR2416  USGS QUAD   -  WHITTINGTON POINT (2016)
 DR2416
 DR2416                         *CURRENT SURVEY CONTROL
 DR2416  ______________________________________________________________________
 DR2416* NAD 83(2011) POSITION- 38 01 38.21931(N) 075 14 41.25513(W)   ADJUSTED
 DR2416* NAD 83(2011) ELLIP HT-   -34.923 (meters)        (06/05/19)   ADJUSTED
 DR2416* NAD 83(2011) EPOCH   -  2010.00
 DR2416* NAVD 88 ORTHO HEIGHT -     1.55  (meters)        5.1   (feet) GPS OBS
 DR2416  ______________________________________________________________________
 DR2416  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2416  GEOID HEIGHT    -        -36.423 (meters)                     GEOID12B
 DR2416  GEOID HEIGHT    -        -36.431 (meters)                     GEOID18
 DR2416  NAD 83(2011) X  -  1,281,226.566 (meters)                     COMP
 DR2416  NAD 83(2011) Y  - -4,864,643.780 (meters)                     COMP
 DR2416  NAD 83(2011) Z  -  3,907,808.375 (meters)                     COMP
 DR2416  LAPLACE CORR    -          0.61  (seconds)                    DEFLEC18
 DR2416
 DR2416  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2416  Standards:
 DR2416         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2416            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2416  -------------------------------------------------------------------
 DR2416  NETWORK    0.99   0.82           0.48   0.26   0.42      0.00710356
 DR2416  -------------------------------------------------------------------
 DR2416  Click here for local accuracies and other accuracy information.
 DR2416
 DR2416.The horizontal coordinates were established by GPS observations
 DR2416.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2416
 DR2416.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2416.been affixed to the stable North American tectonic plate. See 
 DR2416.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2416
 DR2416.The horizontal coordinates are valid at the epoch date displayed above
 DR2416.which is a decimal equivalence of Year/Month/Day.
 DR2416
 DR2416.The orthometric height was determined by GPS observations and a
 DR2416.high-resolution geoid model using precise GPS observation and
 DR2416.processing techniques.
 DR2416
 DR2416.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2416.GEOID18 height accuracy estimate available here.
 DR2416
 DR2416.Click photographs - Photos may exist for this station.
 DR2416
 DR2416.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2416
 DR2416.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2416
 DR2416.The ellipsoidal height was determined by GPS observations
 DR2416.and is referenced to NAD 83.
 DR2416
 DR2416. The following values were computed from the NAD 83(2011) position.
 DR2416
 DR2416;                    North         East     Units Scale Factor Converg.
 DR2416;SPC MD       -    41,512.120   554,106.549   MT  1.00005862   +1 06 05.9
 DR2416;SPC MD       -   136,194.35  1,817,931.24   sFT  1.00005862   +1 06 05.9
 DR2416;UTM  18      - 4,208,870.421   478,515.770   MT  0.99960568   -0 09 02.9
 DR2416
 DR2416!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2416!SPC MD       -   1.00000548  x   1.00005862  =   1.00006410
 DR2416!UTM  18      -   1.00000548  x   0.99960568  =   0.99961116
 DR2416
 DR2416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7851508870(NAD 83)
 DR2416
 DR2416                          SUPERSEDED SURVEY CONTROL
 DR2416
 DR2416.No superseded survey control is available for this station.
 DR2416
 DR2416_MARKER: DD = SURVEY DISK
 DR2416_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DR2416_STAMPING: 2010ASIS010R
 DR2416_MARK LOGO: NPS
 DR2416_PROJECTION: RECESSED 13 CENTIMETERS
 DR2416_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2416_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2416_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2416+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 DR2416_ROD/PIPE-DEPTH: 21.9 meters
 DR2416_SLEEVE-DEPTH  : 0.9 meters
 DR2416
 DR2416  HISTORY     - Date     Condition        Report By
 DR2416  HISTORY     - 20150316 MONUMENTED       NPS
 DR2416
 DR2416                          STATION DESCRIPTION
 DR2416
 DR2416'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DR2416'THE STATION IS LOCATED ABOUT 9.5 MI (15.4 KM) EAST-SOUTHEAST OF
 DR2416'GIRDLETREE, 9.2 MI (14.8 KM) EAST-SOUTHEAST OF STOCKTON AND 8.3 MI
 DR2416'(13.4 KM) SOUTHEAST OF BOXIRON.
 DR2416'
 DR2416'THE STATION IS LOCATED AT THE STATE LINE. FROM BAYBERRY DRIVE,
 DR2416'CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE REQUIRED).
 DR2416'DRIVE SOUTH ON THE BEACH 19.5 KM (12.1 MI) TO THE STATE LINE FENCE.
 DR2416'CONTINUE WEST ALONG THE STATE LINE ROAD FOR 258 M (846.9 FT).
 DR2416'
 DR2416'THE STATION IS 12.4 M (40.7 FT) SOUTH OF THE ROAD, 20 M (65.6 FT)
 DR2416'NORTH OF THE FENCE LINE, AND 55 CM (21.7 IN) SOUTH OF AN ORANGE
 DR2416'CARSONITE WITNESS POST. VEHICLE ACCESS REQUIRES PERMISSION FROM
 DR2416'ASSATEAGUE ISLAND NATIONAL SEASHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9263 ***********************************************************************
 DP9263  DESIGNATION -  ASIS BAYR
 DP9263  PID         -  DP9263
 DP9263  STATE/COUNTY-  MD/WORCESTER
 DP9263  COUNTRY     -  US
 DP9263  USGS QUAD   -  TINGLES ISLAND (2016)
 DP9263
 DP9263                         *CURRENT SURVEY CONTROL
 DP9263  ______________________________________________________________________
 DP9263* NAD 83(2011) POSITION- 38 12 31.52393(N) 075 10 00.45264(W)   ADJUSTED
 DP9263* NAD 83(2011) ELLIP HT-   -34.909 (meters)        (06/05/19)   ADJUSTED
 DP9263* NAD 83(2011) EPOCH   -  2010.00
 DP9263* NAVD 88 ORTHO HEIGHT -     1.334 (meters)        4.38  (feet) ADJUSTED
 DP9263  ______________________________________________________________________
 DP9263  GEOID HEIGHT    -        -36.203 (meters)                     GEOID18
 DP9263  NAD 83(2011) X  -  1,284,664.758 (meters)                     COMP
 DP9263  NAD 83(2011) Y  - -4,850,875.358 (meters)                     COMP
 DP9263  NAD 83(2011) Z  -  3,923,655.868 (meters)                     COMP
 DP9263  LAPLACE CORR    -          0.14  (seconds)                    DEFLEC18
 DP9263  DYNAMIC HEIGHT  -          1.333 (meters)        4.37  (feet) COMP
 DP9263  MODELED GRAVITY -    979,992.3   (mgal)                       NAVD 88
 DP9263
 DP9263  VERT ORDER      -  SECOND    CLASS II
 DP9263
 DP9263  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9263  Standards:
 DP9263         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9263            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9263  -------------------------------------------------------------------
 DP9263  NETWORK    0.96   0.80           0.47   0.25   0.41      0.01075504
 DP9263  -------------------------------------------------------------------
 DP9263  Click here for local accuracies and other accuracy information.
 DP9263
 DP9263.The horizontal coordinates were established by GPS observations
 DP9263.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9263
 DP9263.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9263.been affixed to the stable North American tectonic plate. See 
 DP9263.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9263
 DP9263.The horizontal coordinates are valid at the epoch date displayed above
 DP9263.which is a decimal equivalence of Year/Month/Day.
 DP9263
 DP9263.The orthometric height was determined by differential leveling and
 DP9263.adjusted by the NATIONAL GEODETIC SURVEY
 DP9263.in July 2016.
 DP9263
 DP9263.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9263.GEOID18 height accuracy estimate available here.
 DP9263
 DP9263.Click photographs - Photos may exist for this station.
 DP9263
 DP9263.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9263
 DP9263.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9263
 DP9263.The ellipsoidal height was determined by GPS observations
 DP9263.and is referenced to NAD 83.
 DP9263
 DP9263.The dynamic height is computed by dividing the NAVD 88
 DP9263.geopotential number by the normal gravity value computed on the
 DP9263.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9263.degrees latitude (g = 980.6199 gals.).
 DP9263
 DP9263.The modeled gravity was interpolated from observed gravity values.
 DP9263
 DP9263. The following values were computed from the NAD 83(2011) position.
 DP9263
 DP9263;                    North         East     Units Scale Factor Converg.
 DP9263;SPC MD       -    61,786.730   560,549.586   MT  1.00001713   +1 09 02.1
 DP9263;SPC MD       -   202,711.96  1,839,069.77   sFT  1.00001713   +1 09 02.1
 DP9263;UTM  18      - 4,228,990.562   485,397.677   MT  0.99960263   -0 06 11.4
 DP9263
 DP9263!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9263!SPC MD       -   1.00000548  x   1.00001713  =   1.00002261
 DP9263!UTM  18      -   1.00000548  x   0.99960263  =   0.99960811
 DP9263
 DP9263_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8539728990(NAD 83)
 DP9263
 DP9263                          SUPERSEDED SURVEY CONTROL
 DP9263
 DP9263.No superseded survey control is available for this station.
 DP9263
 DP9263_MARKER: F = FLANGE-ENCASED ROD
 DP9263_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP9263_MARK LOGO: NPS
 DP9263_PROJECTION: FLUSH
 DP9263_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9263_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9263_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9263+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9263_ROD/PIPE-DEPTH: 24.4 meters
 DP9263
 DP9263  HISTORY     - Date     Condition        Report By
 DP9263  HISTORY     - 2010     MONUMENTED       NPS
 DP9263  HISTORY     - 20150227 GOOD             NPS
 DP9263
 DP9263                          STATION DESCRIPTION
 DP9263
 DP9263'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9263'THE STATION IS LOCATED ABOUT 9.9 MI (15.9 KM) SOUTH-SOUTHWEST OF OCEAN
 DP9263'CITY, 8.3 MI (13.4 KM) SOUTH-SOUTHEAST OF BERLIN AND 7.3 MI (11.7 KM)
 DP9263'EAST-SOUTHEAST OF NEWARK.
 DP9263'
 DP9263'TO REACH FROM THE INTERSECTION OF SR611 AND BAYBERRY DRIVE.  TURN
 DP9263'RIGHT/DRIVE SOUTH ON BAYBERRY DRIVE.
 DP9263'
 DP9263'THE STATION IS LOCATED IN THE VICINITY OF BAYSIDE CAMPGROUND.  THE
 DP9263'STATION IS 5.3 M (17.4 FT) NORTHEAST OF THE NORTHERN EDGE OF BAYSIDE
 DP9263'DRIVE, 28 M (91.9 FT) NORTHWEST OF THE INTERSECTION OF BAYSIDE LOOP C
 DP9263'EXIT ROAD AND BAYBERRY DRIVE AND 4.8 M (15.7 FT) NORTHWEST OF THE
 DP9263'SPEED LIMIT 15 SIGN ON THE NORTHERN SIDE OF BAYSIDE DRIVE/SOUTHEAST OF
 DP9263'BAYSIDE PARKING LOT.
 DP9263'
 DP9263'NOTE-THERE IS NO WITNESS POST TO INDICATE THE LOCATION OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9253 ***********************************************************************
 DP9253  DESIGNATION -  ASIS HQ1
 DP9253  PID         -  DP9253
 DP9253  STATE/COUNTY-  MD/WORCESTER
 DP9253  COUNTRY     -  US
 DP9253  USGS QUAD   -  TINGLES ISLAND (2016)
 DP9253
 DP9253                         *CURRENT SURVEY CONTROL
 DP9253  ______________________________________________________________________
 DP9253* NAD 83(2011) POSITION- 38 14 55.28210(N) 075 09 25.14285(W)   ADJUSTED
 DP9253* NAD 83(2011) ELLIP HT-   -34.433 (meters)        (06/05/19)   ADJUSTED
 DP9253* NAD 83(2011) EPOCH   -  2010.00
 DP9253* NAVD 88 ORTHO HEIGHT -     1.764 (meters)        5.79  (feet) ADJUSTED
 DP9253  ______________________________________________________________________
 DP9253  GEOID HEIGHT    -        -36.150 (meters)                     GEOID18
 DP9253  NAD 83(2011) X  -  1,284,792.594 (meters)                     COMP
 DP9253  NAD 83(2011) Y  - -4,848,004.384 (meters)                     COMP
 DP9253  NAD 83(2011) Z  -  3,927,138.139 (meters)                     COMP
 DP9253  LAPLACE CORR    -         -0.15  (seconds)                    DEFLEC18
 DP9253  DYNAMIC HEIGHT  -          1.763 (meters)        5.78  (feet) COMP
 DP9253  MODELED GRAVITY -    979,997.1   (mgal)                       NAVD 88
 DP9253
 DP9253  VERT ORDER      -  SECOND    CLASS II
 DP9253
 DP9253  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9253  Standards:
 DP9253         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9253            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9253  -------------------------------------------------------------------
 DP9253  NETWORK    1.00   0.88           0.48   0.28   0.45     -0.00611603
 DP9253  -------------------------------------------------------------------
 DP9253  Click here for local accuracies and other accuracy information.
 DP9253
 DP9253.The horizontal coordinates were established by GPS observations
 DP9253.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9253
 DP9253.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9253.been affixed to the stable North American tectonic plate. See 
 DP9253.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9253
 DP9253.The horizontal coordinates are valid at the epoch date displayed above
 DP9253.which is a decimal equivalence of Year/Month/Day.
 DP9253
 DP9253.The orthometric height was determined by differential leveling and
 DP9253.adjusted by the NATIONAL GEODETIC SURVEY
 DP9253.in July 2016.
 DP9253
 DP9253.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9253.GEOID18 height accuracy estimate available here.
 DP9253
 DP9253.Click photographs - Photos may exist for this station.
 DP9253
 DP9253.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9253
 DP9253.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9253
 DP9253.The ellipsoidal height was determined by GPS observations
 DP9253.and is referenced to NAD 83.
 DP9253
 DP9253.The dynamic height is computed by dividing the NAVD 88
 DP9253.geopotential number by the normal gravity value computed on the
 DP9253.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9253.degrees latitude (g = 980.6199 gals.).
 DP9253
 DP9253.The modeled gravity was interpolated from observed gravity values.
 DP9253
 DP9253. The following values were computed from the NAD 83(2011) position.
 DP9253
 DP9253;                    North         East     Units Scale Factor Converg.
 DP9253;SPC MD       -    66,235.757   561,318.979   MT  1.00000932   +1 09 24.3
 DP9253;SPC MD       -   217,308.48  1,841,594.02   sFT  1.00000932   +1 09 24.3
 DP9253;UTM  18      - 4,233,419.869   486,263.884   MT  0.99960232   -0 05 49.9
 DP9253
 DP9253!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9253!SPC MD       -   1.00000540  x   1.00000932  =   1.00001472
 DP9253!UTM  18      -   1.00000540  x   0.99960232  =   0.99960772
 DP9253
 DP9253_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8626333419(NAD 83)
 DP9253
 DP9253                          SUPERSEDED SURVEY CONTROL
 DP9253
 DP9253.No superseded survey control is available for this station.
 DP9253
 DP9253_MARKER: DD = SURVEY DISK
 DP9253_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9253_STAMPING: 2010ASISHQ1
 DP9253_MARK LOGO: NPS
 DP9253_PROJECTION: FLUSH
 DP9253_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9253_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9253_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9253+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 DP9253_ROD/PIPE-DEPTH: 4.9 meters
 DP9253
 DP9253  HISTORY     - Date     Condition        Report By
 DP9253  HISTORY     - 2010     MONUMENTED       NPS
 DP9253  HISTORY     - 201502   GOOD             NPS
 DP9253  HISTORY     - 20150316 GOOD             NPS
 DP9253
 DP9253                          STATION DESCRIPTION
 DP9253
 DP9253'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9253'THE STATION IS LOCATED ABOUT 7.3 MI (11.7 KM) EAST OF NEWARK, 7.2 MI
 DP9253'(11.6 KM) SOUTH-SOUTHWEST OF OCEAN CITY AND 6.1 MI (9.8 KM)
 DP9253'SOUTH-SOUTHEAST OF BERLIN.
 DP9253'
 DP9253'TO REACH FROM THE INTERSECTION OF SR611 AND NATIONAL SEASHORE LANE
 DP9253'TURN RIGHT ONTO NATIONAL SEASHORE LANE.
 DP9253'
 DP9253'THE STATION IS LOCATED IN THE NPS HEADQUARTERS AREA SO PERMISSION TO
 DP9253'ACCESS THE STATION SHOULD BE SECURED THROUGH ASSATEAGUE ISLAND
 DP9253'NATIONAL SEASHORE.
 DP9253'
 DP9253'THE STATION IS LOCATED IN A FIELD SOUTHWEST OF THE NPS HEADQUARTERS
 DP9253'PARKING LOT.
 DP9253'
 DP9253'THE STATION IS LOCATED 48.5 M (159.1 FT) WEST OF THE NORTHWEST CORNER
 DP9253'OF THE METAL GARAGES, 77.9 M (255.6 FT) NORTHWEST OF THE SOUTHWEST
 DP9253'CORNER OF THE METAL GARAGES AND 92.0 M (301.8 FT) SOUTHWEST OF THE
 DP9253'SOUTHWEST SIDE OF THE TWO-STORY HEADQUARTERS BUILDING.
 DP9253
 DP9253                          STATION RECOVERY (2015)
 DP9253
 DP9253'RECOVERY NOTE BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9253'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9254 ***********************************************************************
 DP9254  DESIGNATION -  ASIS HQ2R
 DP9254  PID         -  DP9254
 DP9254  STATE/COUNTY-  MD/WORCESTER
 DP9254  COUNTRY     -  US
 DP9254  USGS QUAD   -  TINGLES ISLAND (2016)
 DP9254
 DP9254                         *CURRENT SURVEY CONTROL
 DP9254  ______________________________________________________________________
 DP9254* NAD 83(2011) POSITION- 38 14 52.02516(N) 075 09 19.96086(W)   ADJUSTED
 DP9254* NAD 83(2011) ELLIP HT-   -34.212 (meters)        (06/05/19)   ADJUSTED
 DP9254* NAD 83(2011) EPOCH   -  2010.00
 DP9254* NAVD 88 ORTHO HEIGHT -     1.977 (meters)        6.49  (feet) ADJUSTED
 DP9254  ______________________________________________________________________
 DP9254  GEOID HEIGHT    -        -36.152 (meters)                     GEOID18
 DP9254  NAD 83(2011) X  -  1,284,930.362 (meters)                     COMP
 DP9254  NAD 83(2011) Y  - -4,848,032.366 (meters)                     COMP
 DP9254  NAD 83(2011) Z  -  3,927,059.410 (meters)                     COMP
 DP9254  LAPLACE CORR    -         -0.14  (seconds)                    DEFLEC18
 DP9254  DYNAMIC HEIGHT  -          1.976 (meters)        6.48  (feet) COMP
 DP9254  MODELED GRAVITY -    979,997.1   (mgal)                       NAVD 88
 DP9254
 DP9254  VERT ORDER      -  SECOND    CLASS II
 DP9254
 DP9254  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9254  Standards:
 DP9254         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9254            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9254  -------------------------------------------------------------------
 DP9254  NETWORK    0.97   0.80           0.47   0.26   0.41      0.00810025
 DP9254  -------------------------------------------------------------------
 DP9254  Click here for local accuracies and other accuracy information.
 DP9254
 DP9254.The horizontal coordinates were established by GPS observations
 DP9254.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9254
 DP9254.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9254.been affixed to the stable North American tectonic plate. See 
 DP9254.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9254
 DP9254.The horizontal coordinates are valid at the epoch date displayed above
 DP9254.which is a decimal equivalence of Year/Month/Day.
 DP9254
 DP9254.The orthometric height was determined by differential leveling and
 DP9254.adjusted by the NATIONAL GEODETIC SURVEY
 DP9254.in July 2016.
 DP9254
 DP9254.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9254.GEOID18 height accuracy estimate available here.
 DP9254
 DP9254.Click photographs - Photos may exist for this station.
 DP9254
 DP9254.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9254
 DP9254.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9254
 DP9254.The ellipsoidal height was determined by GPS observations
 DP9254.and is referenced to NAD 83.
 DP9254
 DP9254.The dynamic height is computed by dividing the NAVD 88
 DP9254.geopotential number by the normal gravity value computed on the
 DP9254.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9254.degrees latitude (g = 980.6199 gals.).
 DP9254
 DP9254.The modeled gravity was interpolated from observed gravity values.
 DP9254
 DP9254. The following values were computed from the NAD 83(2011) position.
 DP9254
 DP9254;                    North         East     Units Scale Factor Converg.
 DP9254;SPC MD       -    66,137.898   561,446.985   MT  1.00000949   +1 09 27.5
 DP9254;SPC MD       -   216,987.42  1,842,013.98   sFT  1.00000949   +1 09 27.5
 DP9254;UTM  18      - 4,233,319.273   486,389.666   MT  0.99960228   -0 05 46.7
 DP9254
 DP9254!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9254!SPC MD       -   1.00000537  x   1.00000949  =   1.00001486
 DP9254!UTM  18      -   1.00000537  x   0.99960228  =   0.99960765
 DP9254
 DP9254_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8638933319(NAD 83)
 DP9254
 DP9254                          SUPERSEDED SURVEY CONTROL
 DP9254
 DP9254.No superseded survey control is available for this station.
 DP9254
 DP9254_MARKER: F = FLANGE-ENCASED ROD
 DP9254_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP9254_MARK LOGO: NPS
 DP9254_PROJECTION: FLUSH
 DP9254_MAGNETIC: I = MARKER IS A STEEL ROD
 DP9254_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9254_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9254+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 DP9254_ROD/PIPE-DEPTH: 23.2 meters
 DP9254_SLEEVE-DEPTH  : 0.9 meters
 DP9254
 DP9254  HISTORY     - Date     Condition        Report By
 DP9254  HISTORY     - 2015     MONUMENTED       NPS
 DP9254  HISTORY     - 201502   GOOD             NPS
 DP9254  HISTORY     - 20150316 GOOD             NPS
 DP9254
 DP9254                          STATION DESCRIPTION
 DP9254
 DP9254'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9254'THE STATION IS LOCATED ABOUT 7.4 MI (11.9 KM) EAST OF NEWARK, 7.2 MI
 DP9254'(11.6 KM) SOUTH-SOUTHWEST OF OCEAN CITY AND 6.2 MI (10.0 KM)
 DP9254'SOUTH-SOUTHEAST OF BERLIN.
 DP9254'
 DP9254'TO REACH FROM THE INTERSECTION OF SR611 AND MARSH VIEW LANE, TURN
 DP9254'RIGHT ONTO MARSH VIEW LANE.
 DP9254'
 DP9254'THE STATION IS LOCATED BETWEEN THE UMES BUILDING (BUILDING BEHIND NPS
 DP9254'VISITOR CENTER) AND WHERE MARSH VIEW LANE PAVED ROAD ENDS.
 DP9254'
 DP9254'THE STATION IS 63.8 M (209.3 FT) NORTHEAST OF THE EASTERN SIDE OF THE
 DP9254'UMES BUILDING, 60.2 M (197.5 FT) NORTHWEST OF THE WESTERN SIDE OF THE
 DP9254'NPS VISITOR CENTER AND 87.0 M (285.4 FT) SOUTHWEST OF THE NPS VISITOR
 DP9254'CENTER FLAGPOLE.
 DP9254'
 DP9254'NOTE-THERE IS NO WITNESS POST TO INDICATE THE LOCATION OF THE STATION.
 DP9254
 DP9254                          STATION RECOVERY (2015)
 DP9254
 DP9254'RECOVERY NOTE BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9254'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9239 ***********************************************************************
 DP9239  DESIGNATION -  ASIS INLTR
 DP9239  PID         -  DP9239
 DP9239  STATE/COUNTY-  MD/WORCESTER
 DP9239  COUNTRY     -  US
 DP9239  USGS QUAD   -  OCEAN CITY (2016)
 DP9239
 DP9239                         *CURRENT SURVEY CONTROL
 DP9239  ______________________________________________________________________
 DP9239* NAD 83(2011) POSITION- 38 19 21.83230(N) 075 05 42.93350(W)   ADJUSTED
 DP9239* NAD 83(2011) ELLIP HT-   -31.045 (meters)        (06/05/19)   ADJUSTED
 DP9239* NAD 83(2011) EPOCH   -  2010.00
 DP9239* NAVD 88 ORTHO HEIGHT -     5.059 (meters)       16.60  (feet) ADJUSTED
 DP9239  ______________________________________________________________________
 DP9239  GEOID HEIGHT    -        -36.069 (meters)                     GEOID18
 DP9239  NAD 83(2011) X  -  1,288,705.518 (meters)                     COMP
 DP9239  NAD 83(2011) Y  - -4,841,699.173 (meters)                     COMP
 DP9239  NAD 83(2011) Z  -  3,933,591.372 (meters)                     COMP
 DP9239  LAPLACE CORR    -         -0.55  (seconds)                    DEFLEC18
 DP9239  DYNAMIC HEIGHT  -          5.055 (meters)       16.58  (feet) COMP
 DP9239  MODELED GRAVITY -    980,007.0   (mgal)                       NAVD 88
 DP9239
 DP9239  VERT ORDER      -  SECOND    CLASS II
 DP9239
 DP9239  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9239  Standards:
 DP9239         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9239            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9239  -------------------------------------------------------------------
 DP9239  NETWORK    0.92   0.74           0.45   0.22   0.38      0.02033318
 DP9239  -------------------------------------------------------------------
 DP9239  Click here for local accuracies and other accuracy information.
 DP9239
 DP9239.The horizontal coordinates were established by GPS observations
 DP9239.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9239
 DP9239.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9239.been affixed to the stable North American tectonic plate. See 
 DP9239.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9239
 DP9239.The horizontal coordinates are valid at the epoch date displayed above
 DP9239.which is a decimal equivalence of Year/Month/Day.
 DP9239
 DP9239.The orthometric height was determined by differential leveling and
 DP9239.adjusted by the NATIONAL GEODETIC SURVEY
 DP9239.in July 2016.
 DP9239
 DP9239.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9239.GEOID18 height accuracy estimate available here.
 DP9239
 DP9239.Click photographs - Photos may exist for this station.
 DP9239
 DP9239.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9239
 DP9239.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9239
 DP9239.The ellipsoidal height was determined by GPS observations
 DP9239.and is referenced to NAD 83.
 DP9239
 DP9239.The dynamic height is computed by dividing the NAVD 88
 DP9239.geopotential number by the normal gravity value computed on the
 DP9239.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9239.degrees latitude (g = 980.6199 gals.).
 DP9239
 DP9239.The modeled gravity was interpolated from observed gravity values.
 DP9239
 DP9239. The following values were computed from the NAD 83(2011) position.
 DP9239
 DP9239;                    North         East     Units Scale Factor Converg.
 DP9239;SPC MD       -    74,563.663   566,549.501   MT  0.99999612   +1 11 43.7
 DP9239;SPC MD       -   244,630.95  1,858,754.49   sFT  0.99999612   +1 11 43.7
 DP9239;UTM  18      - 4,241,627.995   491,673.272   MT  0.99960085   -0 03 32.6
 DP9239
 DP9239!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9239!SPC MD       -   1.00000487  x   0.99999612  =   1.00000099
 DP9239!UTM  18      -   1.00000487  x   0.99960085  =   0.99960572
 DP9239
 DP9239_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9167341627(NAD 83)
 DP9239
 DP9239                          SUPERSEDED SURVEY CONTROL
 DP9239
 DP9239.No superseded survey control is available for this station.
 DP9239
 DP9239_MARKER: F = FLANGE-ENCASED ROD
 DP9239_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP9239_STAMPING: ASISINLT 2014
 DP9239_MARK LOGO: NPS
 DP9239_PROJECTION: PROJECTING 10 CENTIMETERS
 DP9239_MAGNETIC: I = MARKER IS A STEEL ROD
 DP9239_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9239_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9239+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9239_ROD/PIPE-DEPTH: 24.4 meters
 DP9239_SLEEVE-DEPTH  : 0.9 meters
 DP9239
 DP9239  HISTORY     - Date     Condition        Report By
 DP9239  HISTORY     - 2014     MONUMENTED       NPS
 DP9239  HISTORY     - 20150227 GOOD             NPS
 DP9239
 DP9239                          STATION DESCRIPTION
 DP9239
 DP9239'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9239'THE STATION IS LOCATED ABOUT 6.7 MI (10.8 KM) EAST OF BERLIN, 5.7 MI
 DP9239'(9.2 KM) SOUTHEAST OF OCEAN PINES AND 1.1 MI (1.8 KM) SOUTH-SOUTHWEST
 DP9239'OF OCEAN CITY.
 DP9239'
 DP9239'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY.  CONTINUE ON
 DP9239'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9239'SHELL ROAD.
 DP9239'
 DP9239'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9239'NATIONAL SEASHORE.
 DP9239'
 DP9239'THE STATION IS NORTHEAST OF KM 0.5.  THE STATION IS 390 M (1279.5 FT)
 DP9239'NORTHEAST OF KILOMETER POST O.5, 31.5 M (103.3 FT) SOUTHWEST OF
 DP9239'SOUTHERN EDGE OF DUNE CROSSING ROAD TO INLET BOAT LANDING SITES AND
 DP9239'171 M (561.0 FT) SOUTHWEST OF WESTERN TIP OF JETTY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6536 ***********************************************************************
 JV6536  DESIGNATION -  ASKI RESET
 JV6536  PID         -  JV6536
 JV6536  STATE/COUNTY-  MD/HOWARD
 JV6536  COUNTRY     -  US
 JV6536  USGS QUAD   -  SAVAGE (2016)
 JV6536
 JV6536                         *CURRENT SURVEY CONTROL
 JV6536  ______________________________________________________________________
 JV6536* NAD 83(1991) POSITION- 39 07 29.36543(N) 076 51 50.25566(W)   ADJUSTED
 JV6536* NAVD 88 ORTHO HEIGHT -   100.63  (meters)      330.2   (feet) RESET
 JV6536  ______________________________________________________________________
 JV6536  GEOID HEIGHT    -        -32.197 (meters)                     GEOID18
 JV6536  LAPLACE CORR    -         -4.22  (seconds)                    DEFLEC18
 JV6536  HORZ ORDER      -  THIRD
 JV6536  VERT ORDER      -  THIRD
 JV6536
 JV6536.The horizontal coordinates were established by classical geodetic methods
 JV6536.and adjusted by the National Geodetic Survey in January 1992.
 JV6536
 JV6536.The orthometric height was computed from unverified reset data.
 JV6536
 JV6536.No vertical observational check was made to the station.
 JV6536
 JV6536.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6536.GEOID18 height accuracy estimate available here.
 JV6536
 JV6536.Click photographs - Photos may exist for this station.
 JV6536
 JV6536.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6536
 JV6536. The following values were computed from the NAD 83(1991) position.
 JV6536
 JV6536;                    North         East     Units Scale Factor Converg.
 JV6536;SPC MD       -   161,871.869   411,763.447   MT  0.99995927   +0 05 07.4
 JV6536;SPC MD       -   531,074.62  1,350,927.24   sFT  0.99995927   +0 05 07.4
 JV6536;UTM  18      - 4,332,282.689   338,874.566   MT  0.99991967   -1 10 35.2
 JV6536
 JV6536!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6536!SPC MD       -   0.99998926  x   0.99995927  =   0.99994853
 JV6536!UTM  18      -   0.99998926  x   0.99991967  =   0.99990893
 JV6536
 JV6536:                Primary Azimuth Mark                     Grid Az
 JV6536:SPC MD       -  KRAESKI                                  343 40 32.0
 JV6536:UTM  18      -  KRAESKI                                  344 56 14.6
 JV6536
 JV6536_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3887432282(NAD 83)
 JV6536
 JV6536|---------------------------------------------------------------------|
 JV6536| PID    Reference Object                     Distance      Geod. Az  |
 JV6536|                                                           dddmmss.s |
 JV6536| JV0891 ASKI RM 1                            11.460 METERS 17025     |
 JV6536| JV0895 L 25 RESET                           60.027 METERS 17106     |
 JV6536| JV6534 ASKI RM 3                            18.960 METERS 25904     |
 JV6536| JV0892 ASKI RM 2                            10.603 METERS 28614     |
 JV6536| JV5847 KRAESKI 2                           APPROX. 0.6 KM 3374536.1 |
 JV6536| JV6535 ASKI RM 4                            22.637 METERS 33852     |
 JV6536| JV5848 KRAESKI                             APPROX. 0.6 KM 3434539.4 |
 JV6536|---------------------------------------------------------------------|
 JV6536
 JV6536                          SUPERSEDED SURVEY CONTROL
 JV6536
 JV6536  NAD 83(1986)-  39 07 29.36403(N)    076 51 50.26541(W) AD(       ) 3
 JV6536  NAD 27      -  39 07 28.97329(N)    076 51 51.36386(W) AD(       ) 2
 JV6536  NGVD 29             100.85   (m)          330.9    (f) LEVELING    3  
 JV6536
 JV6536.Superseded values are not recommended for survey control.
 JV6536
 JV6536.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6536.See file dsdata.pdf to determine how the superseded data were derived.
 JV6536
 JV6536_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6536_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6536_STAMPING: ASKI 1957 1982
 JV6536_MARK LOGO: NGS
 JV6536_PROJECTION: FLUSH
 JV6536_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6536_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6536+STABILITY: SURFACE MOTION
 JV6536
 JV6536  HISTORY     - Date     Condition        Report By
 JV6536  HISTORY     - 1982     MONUMENTED       NGS
 JV6536  HISTORY     - 20200803 GOOD             PROFLN
 JV6536
 JV6536                          STATION DESCRIPTION
 JV6536
 JV6536'DESCRIBED BY NATIONAL GEODETIC SURVEY 1982
 JV6536'3.2 KM (2.00 MI) NORTH FROM LAUREL.
 JV6536'1.5 KM (0.95 MI) SOUTHEAST ALONG STATE HIGHWAY 216 FROM A POINT WHERE
 JV6536'IT JUNCTIONS WITH INTERSTATE HIGHWAY 95, THENSE 0.8 KM (0.50 MI)
 JV6536'SOUTHWEST ALONG ALL SAINTS ROAD, THENSE 0.8 KM (0.50 MI) NORTHWEST
 JV6536'ALONG OLD SCAGGSVILLE ROAD, THENSE 0.7 KM (0.45 MI) NORTH ALONG OLD
 JV6536'STATE HIGHWAY 216, 9.4 M (30.8 FT) WEST FROM THE CENTER OF STATE
 JV6536'HIGHWAY 216, 6.9 M (22.6 FT) NORTHWEST FROM A POWERLINE POLE NUMBERED
 JV6536'315260, 19.8 M (65.0 FT) SOUTHEAST OF THE SOUTHEAST RIGHT-OF-WAY
 JV6536'FENCE FOR INTERSTATE HIGHWAY 95 AND 20.0 M (65.6 FT) NORTHEAST FROM A
 JV6536'POWERLINE POLE NUMBERED 468960.
 JV6536'THE MARK IS 0.3 METERS  N FROM  A WITNESS POST
 JV6536'THE MARK IS 0.2 M BELOW OLD STATE HIGHWAY 216.
 JV6536
 JV6536                          STATION RECOVERY (2020)
 JV6536
 JV6536'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV6536'THE MARK IS AT THE NORTH CORNER OF AN OPEN PLAYGROUND AREA FOR THE
 JV6536'WYNDEMERE DEVELOPMENT.  IT IS ABOUT 185 FT (56.4 M) NORTHWEST OF,
 JV6536'RADIAL TO, A CURVING SIDEWALK ALONG THE NORTHWEST SIDE OF OLD
 JV6536'SCAGGSVILLE ROAD AT THE BEGINNING OF THE DEVELOPMENT.  THERE IS AN
 JV6536'ORANGE WITNESS POST A FOOT OR TWO NORTHWEST OF THE STATION.
 JV6536'
 JV6536'THE STATION IS FLUSH WITH THE IMMEDIATE GROUND BUT IN A BIT OF A
 JV6536'DEPRESSION.  THERE IS ANOTHER WITNESS POST, ABOUT 20 FT (6.1 M) SOUTH
 JV6536'OF THE STATION, THAT DOES NOT APPEAR TO BE NEAR ANY PUBLISHED MARK.
 JV6536'IT IS VISIBLE FROM THE ROAD AND POINTS THE WAY TO THE STATION.
 JV6536'
 JV6536'THE TWO RMS ARE PROBABLY IN GOOD SHAPE, JUST IN THICK BRUSH UP AND
 JV6536'OVER A BANK BETWEEN THE STATION AND THE I-95 R/W FENCE.  BECAUSE
 JV6536'SUBSTANTIAL LINE CUTTING WOULD HAVE BEEN REQUIRED, THEY WERE NOT
 JV6536'SEARCHED FOR.  THERE IS NO GOOD NEARBY POINT AVAILABLE FOR AZIMUTH
 JV6536'WITH BENCH MARK L 25 RESET DESTROYED.  AN AZIMUTH COULD PROBABLY BE
 JV6536'SCALED TO A POWER POLE IN GOOGLE EARTH TO SEARCH FOR THE RMS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0891 ***********************************************************************
 JV0891  DESIGNATION -  ASKI RM 1
 JV0891  PID         -  JV0891
 JV0891  STATE/COUNTY-  MD/HOWARD
 JV0891  COUNTRY     -  US
 JV0891  USGS QUAD   -  SAVAGE (2016)
 JV0891
 JV0891                         *CURRENT SURVEY CONTROL
 JV0891  ______________________________________________________________________
 JV0891* NAD 83(1986) POSITION- 39 07 29.00   (N) 076 51 50.18   (W)   HD_HELD1
 JV0891* NAVD 88 ORTHO HEIGHT -   100.552 (meters)      329.89  (feet) ADJUSTED
 JV0891  ______________________________________________________________________
 JV0891  GEOID HEIGHT    -        -32.198 (meters)                     GEOID18
 JV0891  DYNAMIC HEIGHT  -        100.498 (meters)      329.72  (feet) COMP
 JV0891  MODELED GRAVITY -    980,094.3   (mgal)                       NAVD 88
 JV0891
 JV0891  VERT ORDER      -  SECOND    CLASS 0
 JV0891
 JV0891.The horizontal coordinates were determined by differentially corrected
 JV0891.hand held GPS observations or other comparable positioning techniques
 JV0891.and have an estimated accuracy of +/- 3 meters.
 JV0891
 JV0891.The orthometric height was determined by differential leveling and
 JV0891.adjusted by the NATIONAL GEODETIC SURVEY
 JV0891.in June 1991.
 JV0891
 JV0891.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0891.GEOID18 height accuracy estimate available here.
 JV0891
 JV0891.Click photographs - Photos may exist for this station.
 JV0891
 JV0891.The dynamic height is computed by dividing the NAVD 88
 JV0891.geopotential number by the normal gravity value computed on the
 JV0891.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0891.degrees latitude (g = 980.6199 gals.).
 JV0891
 JV0891.The modeled gravity was interpolated from observed gravity values.
 JV0891
 JV0891;                    North         East    Units  Estimated Accuracy
 JV0891;SPC MD       -   161,860.6     411,765.3     MT  (+/- 3 meters HH1 GPS) 
 JV0891
 JV0891_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3887632271(NAD 83)
 JV0891
 JV0891                          SUPERSEDED SURVEY CONTROL
 JV0891
 JV0891  NGVD 29 (11/26/84)  100.764  (m)          330.59   (f) ADJUSTED    2 0
 JV0891
 JV0891.Superseded values are not recommended for survey control.
 JV0891
 JV0891.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0891.See file dsdata.pdf to determine how the superseded data were derived.
 JV0891
 JV0891_MARKER: DR = REFERENCE MARK DISK
 JV0891_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0891_STAMPING: ASKI NO 1 1957
 JV0891_MARK LOGO: CGS
 JV0891_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0891+STABILITY: SURFACE MOTION
 JV0891
 JV0891  HISTORY     - Date     Condition        Report By
 JV0891  HISTORY     - 1957     MONUMENTED       CGS
 JV0891
 JV0891                          STATION DESCRIPTION
 JV0891
 JV0891'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0891'2 MI NNE FROM LAUREL.
 JV0891'IN HOWARD COUNTY, 0.7 MILE WEST ALONG MAIN STREET FROM THE POST
 JV0891'OFFICE IN LAUREL, PRINCE GEORGES COUNTY, TO THE INTERSECTION
 JV0891'OF STATE HIGHWAY 216, THENCE 1.8 MILES NORTH ALONG STATE HIGHWAY
 JV0891'216 TO A SIDE ROAD WEST, 2.0 MILES WEST-SOUTHWEST OF SAVAGE, 37.60
 JV0891'FEET SOUTH-SOUTHEAST OF THE TRAVERSE STATION, 25 FEET SOUTHWEST
 JV0891'OF A DRIVEWAY, 24 FEET WEST-NORTHWEST OF THE CENTERLINE OF STATE
 JV0891'HIGHWAY 216, AND 15 FEET SOUTHWEST OF A POWER POLE.  A STANDARD
 JV0891'REFERENCE MARK DISK, STAMPED ASKI NO 1 1957 AND SET IN THE TOP
 JV0891'OF A CONCRETE POST PROJECTING ABOUT 4 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0892 ***********************************************************************
 JV0892  DESIGNATION -  ASKI RM 2
 JV0892  PID         -  JV0892
 JV0892  STATE/COUNTY-  MD/HOWARD
 JV0892  COUNTRY     -  US
 JV0892  USGS QUAD   -  SAVAGE (2016)
 JV0892
 JV0892                         *CURRENT SURVEY CONTROL
 JV0892  ______________________________________________________________________
 JV0892* NAD 83(1986) POSITION- 39 07 29.46   (N) 076 51 50.68   (W)   HD_HELD1
 JV0892* NAVD 88 ORTHO HEIGHT -   100.554 (meters)      329.90  (feet) ADJUSTED
 JV0892  ______________________________________________________________________
 JV0892  GEOID HEIGHT    -        -32.197 (meters)                     GEOID18
 JV0892  DYNAMIC HEIGHT  -        100.501 (meters)      329.73  (feet) COMP
 JV0892  MODELED GRAVITY -    980,094.3   (mgal)                       NAVD 88
 JV0892
 JV0892  VERT ORDER      -  SECOND    CLASS 0
 JV0892
 JV0892.The horizontal coordinates were determined by differentially corrected
 JV0892.hand held GPS observations or other comparable positioning techniques
 JV0892.and have an estimated accuracy of +/- 3 meters.
 JV0892
 JV0892.The orthometric height was determined by differential leveling and
 JV0892.adjusted by the NATIONAL GEODETIC SURVEY
 JV0892.in June 1991.
 JV0892
 JV0892.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0892.GEOID18 height accuracy estimate available here.
 JV0892
 JV0892.Click photographs - Photos may exist for this station.
 JV0892
 JV0892.The dynamic height is computed by dividing the NAVD 88
 JV0892.geopotential number by the normal gravity value computed on the
 JV0892.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0892.degrees latitude (g = 980.6199 gals.).
 JV0892
 JV0892.The modeled gravity was interpolated from observed gravity values.
 JV0892
 JV0892;                    North         East    Units  Estimated Accuracy
 JV0892;SPC MD       -   161,874.8     411,753.2     MT  (+/- 3 meters HH1 GPS) 
 JV0892
 JV0892_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3886432285(NAD 83)
 JV0892
 JV0892                          SUPERSEDED SURVEY CONTROL
 JV0892
 JV0892  NGVD 29 (11/26/84)  100.767  (m)          330.60   (f) ADJUSTED    2 0
 JV0892
 JV0892.Superseded values are not recommended for survey control.
 JV0892
 JV0892.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0892.See file dsdata.pdf to determine how the superseded data were derived.
 JV0892
 JV0892_MARKER: DR = REFERENCE MARK DISK
 JV0892_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0892_STAMPING: ASKI NO 2 1957
 JV0892_MARK LOGO: CGS
 JV0892_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0892+STABILITY: SURFACE MOTION
 JV0892
 JV0892  HISTORY     - Date     Condition        Report By
 JV0892  HISTORY     - 1957     MONUMENTED       CGS
 JV0892
 JV0892                          STATION DESCRIPTION
 JV0892
 JV0892'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0892'2 MI NNW FROM LAUREL.
 JV0892'IN HOWARD COUNTY, 0.7 MILE WEST ALONG MAIN STREET FROM THE POST
 JV0892'OFFICE IN LAUREL, PRINCE GEORGES COUNTY, TO THE INTERSECTION OF
 JV0892'STATE HIGHWAY 216, THENCE 1.8 MILES NORTH ALONG STATE HIGHWAY 216
 JV0892'TO A SIDE ROAD WEST, 2.0 MILES WEST-SOUTHWEST OF SAVAGE, 34.79
 JV0892'FEET NORTHWEST OF THE TRAVERSE STATION, 52 FEET NORTH-NORTHWEST
 JV0892'OF A POWER POLE, AND 11 FEET NORTH-NORTHEAST OF THE CENTERLINE
 JV0892'OF THE DRIVEWAY.  A STANDARD REFERENCE-MARK DISK, STAMPED ASKI
 JV0892'NO 2 1957 AND SET IN THE TOP OF A CONCRETE POST PROJECTING ABOUT
 JV0892'4 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6534 ***********************************************************************
 JV6534  DESIGNATION -  ASKI RM 3
 JV6534  PID         -  JV6534
 JV6534  STATE/COUNTY-  MD/HOWARD
 JV6534  COUNTRY     -  US
 JV6534  USGS QUAD   -  SAVAGE (2016)
 JV6534
 JV6534                         *CURRENT SURVEY CONTROL
 JV6534  ______________________________________________________________________
 JV6534* NAD 83(1991) POSITION- 39 07 29.24875(N) 076 51 51.03062(W)   ADJUSTED
 JV6534* NAVD 88 ORTHO HEIGHT -    99.91  (meters)      327.8   (feet) RESET
 JV6534  ______________________________________________________________________
 JV6534  GEOID HEIGHT    -        -32.197 (meters)                     GEOID18
 JV6534  LAPLACE CORR    -         -4.22  (seconds)                    DEFLEC18
 JV6534  HORZ ORDER      -  THIRD
 JV6534  VERT ORDER      -  THIRD
 JV6534
 JV6534.The horizontal coordinates were established by classical geodetic methods
 JV6534.and adjusted by the National Geodetic Survey in January 1992.
 JV6534
 JV6534.The orthometric height was computed from unverified reset data.
 JV6534
 JV6534.No vertical observational check was made to the station.
 JV6534
 JV6534.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6534.GEOID18 height accuracy estimate available here.
 JV6534
 JV6534.Click photographs - Photos may exist for this station.
 JV6534
 JV6534.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6534
 JV6534. The following values were computed from the NAD 83(1991) position.
 JV6534
 JV6534;                    North         East     Units Scale Factor Converg.
 JV6534;SPC MD       -   161,868.244   411,744.838   MT  0.99995926   +0 05 06.9
 JV6534;SPC MD       -   531,062.73  1,350,866.19   sFT  0.99995926   +0 05 06.9
 JV6534;UTM  18      - 4,332,279.474   338,855.882   MT  0.99991975   -1 10 35.6
 JV6534
 JV6534!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6534!SPC MD       -   0.99998938  x   0.99995926  =   0.99994864
 JV6534!UTM  18      -   0.99998938  x   0.99991975  =   0.99990913
 JV6534
 JV6534_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3885532279(NAD 83)
 JV6534
 JV6534                          SUPERSEDED SURVEY CONTROL
 JV6534
 JV6534  NAD 83(1986)-  39 07 29.24736(N)    076 51 51.04037(W) AD(       ) 3
 JV6534  NGVD 29             100.12   (m)          328.5    (f) LEVELING    3  
 JV6534
 JV6534.Superseded values are not recommended for survey control.
 JV6534
 JV6534.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6534.See file dsdata.pdf to determine how the superseded data were derived.
 JV6534
 JV6534_MARKER: DR = REFERENCE MARK DISK
 JV6534_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6534_STAMPING: ASKI 1957 NO 3 1982
 JV6534_MARK LOGO: NGS
 JV6534_PROJECTION: FLUSH
 JV6534_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6534_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6534+STABILITY: SURFACE MOTION
 JV6534
 JV6534  HISTORY     - Date     Condition        Report By
 JV6534  HISTORY     - 1982     MONUMENTED       NGS
 JV6534
 JV6534                          STATION DESCRIPTION
 JV6534
 JV6534'DESCRIBED BY NATIONAL GEODETIC SURVEY 1982
 JV6534'3.2 KM (2.00 MI) NORTH FROM LAUREL.
 JV6534'1.5 K, SOUTHEAST ALONG STATE HIGHWAY 216 FROM ITS JUNCTION WITH
 JV6534'INTERSTATE HIGHWAY 95, THENSE 0.8 KM (0.50 MI) SOUTHWEST ALONG ALL
 JV6534'SAINTS ROAD, THENSE 0.8 KM (0.50 MI) NORTHWEST ALONG OLD SCAGGSVILLE
 JV6534'ROAD, THENSE 0.7 KM (0.45 MI) NORTH ALONG OLD STATE HIGHWAY 216, 1.1
 JV6534'M (3.6 FT) NORTHEAST FROM A POWERLINE POLE NUMBERED 468960, 27.7 M
 JV6534'(90.9 FT) WEST FROM THE CENTER OF STATE HIGHWAY 216 AND 7.3 M
 JV6534'(24.0 FT) SOUTHEAST FROM THE SOUTHEAST RIGHT-OF-WAY FENCE FOR
 JV6534'INTERSTATE HIGHWAY 95.
 JV6534'THE MARK IS 19.0 METERS  SW FROM  A WITNESS POST
 JV6534'THE MARK IS 0.5 M BELOW STATE HIGHWAY 216.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6535 ***********************************************************************
 JV6535  DESIGNATION -  ASKI RM 4
 JV6535  PID         -  JV6535
 JV6535  STATE/COUNTY-  MD/HOWARD
 JV6535  COUNTRY     -  US
 JV6535  USGS QUAD   -  SAVAGE (2016)
 JV6535
 JV6535                         *CURRENT SURVEY CONTROL
 JV6535  ______________________________________________________________________
 JV6535* NAD 83(1991) POSITION- 39 07 30.05009(N) 076 51 50.59556(W)   ADJUSTED
 JV6535* NAVD 88 ORTHO HEIGHT -   100.78  (meters)      330.6   (feet) RESET
 JV6535  ______________________________________________________________________
 JV6535  GEOID HEIGHT    -        -32.197 (meters)                     GEOID18
 JV6535  LAPLACE CORR    -         -4.21  (seconds)                    DEFLEC18
 JV6535  HORZ ORDER      -  THIRD
 JV6535  VERT ORDER      -  THIRD
 JV6535
 JV6535.The horizontal coordinates were established by classical geodetic methods
 JV6535.and adjusted by the National Geodetic Survey in January 1992.
 JV6535
 JV6535.The orthometric height was computed from unverified reset data.
 JV6535
 JV6535.No vertical observational check was made to the station.
 JV6535
 JV6535.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6535.GEOID18 height accuracy estimate available here.
 JV6535
 JV6535.Click photographs - Photos may exist for this station.
 JV6535
 JV6535.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6535
 JV6535. The following values were computed from the NAD 83(1991) position.
 JV6535
 JV6535;                    North         East     Units Scale Factor Converg.
 JV6535;SPC MD       -   161,892.970   411,755.251   MT  0.99995928   +0 05 07.2
 JV6535;SPC MD       -   531,143.85  1,350,900.35   sFT  0.99995928   +0 05 07.2
 JV6535;UTM  18      - 4,332,303.965   338,866.837   MT  0.99991970   -1 10 35.4
 JV6535
 JV6535!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6535!SPC MD       -   0.99998924  x   0.99995928  =   0.99994852
 JV6535!UTM  18      -   0.99998924  x   0.99991970  =   0.99990894
 JV6535
 JV6535_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3886632303(NAD 83)
 JV6535
 JV6535                          SUPERSEDED SURVEY CONTROL
 JV6535
 JV6535  NAD 83(1986)-  39 07 30.04870(N)    076 51 50.60531(W) AD(       ) 3
 JV6535  NGVD 29             100.99   (m)          331.3    (f) LEVELING    3  
 JV6535
 JV6535.Superseded values are not recommended for survey control.
 JV6535
 JV6535.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6535.See file dsdata.pdf to determine how the superseded data were derived.
 JV6535
 JV6535_MARKER: DR = REFERENCE MARK DISK
 JV6535_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6535_STAMPING: ASKI 1957 NO 4 1982
 JV6535_MARK LOGO: NGS
 JV6535_PROJECTION: FLUSH
 JV6535_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6535_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6535+STABILITY: SURFACE MOTION
 JV6535
 JV6535  HISTORY     - Date     Condition        Report By
 JV6535  HISTORY     - 1982     MONUMENTED       NGS
 JV6535
 JV6535                          STATION DESCRIPTION
 JV6535
 JV6535'DESCRIBED BY NATIONAL GEODETIC SURVEY 1982
 JV6535'3.2 KM (2.00 MI) NORTH FROM LAUREL.
 JV6535'1.5 KM (0.95 MI) SOUTHEAST ALONG STATE HIGHWAY 216 FROM ITS JUNCTION
 JV6535'WITH INTERSTATE HIGHWAY 95, THENSE 0.8 KM (0.50 MI) SOUTHWEST ALONG
 JV6535'ALL SAINTS ROAD, THENSE 0.8 KM (0.50 MI) NORTHWEST ALONG OLD
 JV6535'SCAGGSVILLE ROAD, THENSE 0.7 KM (0.45 MI) NORTH ALONG OLD STATE
 JV6535'HIGHWAY 216, 27.3 M (89.6 FT) NORTH-NORTHEAST FROM A POWERLINE POLE
 JV6535'NUMBERED 468960, 29.5 M (96.8 FT) NORTHWEST FROM A POWERLINE POLE
 JV6535'NUMBERED 315260, 1.0 M (3.3 FT) SOUTHEAST OF THE SOUTHEAST
 JV6535'RIGHT-OF-WAY FENCE ALONG INTERSTATE HIGHWAY 95 AND 19.8 M (65.0 FT)
 JV6535'WEST FROM THE CENTER OF OLD STATE HIGHWAY 95.
 JV6535'THE MARK IS 22.9 METERS  SW FROM  A WITNESS POST
 JV6535'THE MARK IS 0.5 M ABOVE STATE HIGHWAY 216.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5681 ***********************************************************************
 JV5681  DESIGNATION -  ASPHALT USE 1916
 JV5681  PID         -  JV5681
 JV5681  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5681  COUNTRY     -  US
 JV5681  USGS QUAD   -  CURTIS BAY (2016)
 JV5681
 JV5681                         *CURRENT SURVEY CONTROL
 JV5681  ______________________________________________________________________
 JV5681* NAD 83(1991) POSITION- 39 13 39.24607(N) 076 34 14.08618(W)   ADJUSTED
 JV5681* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 JV5681  ______________________________________________________________________
 JV5681  GEOID HEIGHT    -        -32.911 (meters)                     GEOID18
 JV5681  LAPLACE CORR    -         -4.06  (seconds)                    DEFLEC18
 JV5681  HORZ ORDER      -  THIRD
 JV5681
 JV5681.The horizontal coordinates were established by classical geodetic methods
 JV5681.and adjusted by the National Geodetic Survey in January 1992.
 JV5681
 JV5681.The orthometric height was scaled from a topographic map.
 JV5681
 JV5681.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5681.GEOID18 height accuracy estimate available here.
 JV5681
 JV5681.Click photographs - Photos may exist for this station.
 JV5681
 JV5681.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5681
 JV5681. The following values were computed from the NAD 83(1991) position.
 JV5681
 JV5681;                    North         East     Units Scale Factor Converg.
 JV5681;SPC MD       -   173,356.488   437,078.402   MT  0.99996865   +0 16 10.3
 JV5681;SPC MD       -   568,753.74  1,433,981.39   sFT  0.99996865   +0 16 10.3
 JV5681;UTM  18      - 4,343,205.781   364,434.049   MT  0.99982629   -0 59 36.2
 JV5681
 JV5681!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5681!SPC MD       -   1.00000457  x   0.99996865  =   0.99997322
 JV5681!UTM  18      -   1.00000457  x   0.99982629  =   0.99983086
 JV5681
 JV5681:                Primary Azimuth Mark                     Grid Az
 JV5681:SPC MD       -  SLEDDS USE 1915                          190 33 07.2
 JV5681:UTM  18      -  SLEDDS USE 1915                          191 48 53.7
 JV5681
 JV5681_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6443443205(NAD 83)
 JV5681
 JV5681|---------------------------------------------------------------------|
 JV5681| PID    Reference Object                     Distance      Geod. Az  |
 JV5681|                                                           dddmmss.s |
 JV5681| JV5722 SLEDDS USE 1915                     APPROX. 1.0 KM 1904917.5 |
 JV5681|---------------------------------------------------------------------|
 JV5681
 JV5681                          SUPERSEDED SURVEY CONTROL
 JV5681
 JV5681  NAD 83(1986)-  39 13 39.24230(N)    076 34 14.09546(W) AD(       ) 3
 JV5681  NAD 27      -  39 13 38.85300(N)    076 34 15.22200(W) AD(       ) 3
 JV5681  USSD        -  39 13 39.21800(N)    076 34 15.06100(W) AD(       ) 3
 JV5681
 JV5681.Superseded values are not recommended for survey control.
 JV5681
 JV5681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5681.See file dsdata.pdf to determine how the superseded data were derived.
 JV5681
 JV5681_MARKER: DD = SURVEY DISK
 JV5681_SETTING: 0 = UNSPECIFIED SETTING
 JV5681_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5681
 JV5681  HISTORY     - Date     Condition        Report By
 JV5681  HISTORY     - 1916     MONUMENTED       USACE
 JV5681
 JV5681                          STATION DESCRIPTION
 JV5681
 JV5681'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1916
 JV5681'ON THE N SIDE OF CURTIS BAY, AT EAST BROOKLYN, NEARLY S OF A
 JV5681'FRAME BUILDING, W OF A BRICK WALL LEADING FROM THE BUILDING TO A
 JV5681'WHARF, 1.11 METERS (3.65 FEET) NEARLY E FROM A POPLAR TREE, 8.64
 JV5681'METERS (28.35 FEET) FROM THE SW CORNER OF THE BUILDING, AND 9.51
 JV5681'METERS (31.20 FEET) FROM THE SE CORNER OF SAME.  THE STATION IS
 JV5681'MARKED BY CONCRETE MONUMENT CENTERED BY A STANDARD U.S.E. BRONZE
 JV5681'MARKER.  IN 1924 THIS POINT REPORTED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6428 ***********************************************************************
 HV6428  DESIGNATION -  ASQUITH MSFC 1910
 HV6428  PID         -  HV6428
 HV6428  STATE/COUNTY-  MD/DORCHESTER
 HV6428  COUNTRY     -  US
 HV6428  USGS QUAD   -  HONGA (2016)
 HV6428
 HV6428                         *CURRENT SURVEY CONTROL
 HV6428  ______________________________________________________________________
 HV6428* NAD 83(1991) POSITION- 38 17 02.14525(N) 076 08 59.58708(W)   ADJUSTED
 HV6428* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6428  ______________________________________________________________________
 HV6428  GEOID HEIGHT    -        -35.384 (meters)                     GEOID18
 HV6428  LAPLACE CORR    -         -2.96  (seconds)                    DEFLEC18
 HV6428  HORZ ORDER      -  THIRD
 HV6428
 HV6428.The horizontal coordinates were established by classical geodetic methods
 HV6428.and adjusted by the National Geodetic Survey in January 1992.
 HV6428
 HV6428.The orthometric height was scaled from a topographic map.
 HV6428
 HV6428.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6428.GEOID18 height accuracy estimate available here.
 HV6428
 HV6428.Click photographs - Photos may exist for this station.
 HV6428
 HV6428.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6428
 HV6428. The following values were computed from the NAD 83(1991) position.
 HV6428
 HV6428;                    North         East     Units Scale Factor Converg.
 HV6428;SPC MD       -    68,865.286   474,378.000   MT  1.00000283   +0 32 00.8
 HV6428;SPC MD       -   225,935.53  1,556,355.16   sFT  1.00000283   +0 32 00.8
 HV6428;UTM  18      - 4,237,943.605   399,432.042   MT  0.99972456   -0 42 44.9
 HV6428
 HV6428!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6428!SPC MD       -   1.00000543  x   1.00000283  =   1.00000826
 HV6428!UTM  18      -   1.00000543  x   0.99972456  =   0.99972999
 HV6428
 HV6428:                Primary Azimuth Mark                     Grid Az
 HV6428:SPC MD       -  WINDMILL 2                               176 34 48.5
 HV6428:UTM  18      -  WINDMILL 2                               177 49 34.2
 HV6428
 HV6428_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9943237943(NAD 83)
 HV6428
 HV6428|---------------------------------------------------------------------|
 HV6428| PID    Reference Object                     Distance      Geod. Az  |
 HV6428|                                                           dddmmss.s |
 HV6428| HV6423 WINDMILL 2                          APPROX. 1.3 KM 1770649.3 |
 HV6428| HV6422 HOOPERSVILLE ME CHURCH CUPOLA       APPROX. 3.7 KM 2245638.2 |
 HV6428|---------------------------------------------------------------------|
 HV6428
 HV6428                          SUPERSEDED SURVEY CONTROL
 HV6428
 HV6428  NAD 83(1986)-  38 17 02.14469(N)    076 08 59.60461(W) AD(       ) 3
 HV6428  NAD 27      -  38 17 01.69700(N)    076 09 00.82200(W) AD(       ) 3
 HV6428  USSD        -  38 17 02.07700(N)    076 09 00.55200(W) AD(       ) 3
 HV6428
 HV6428.Superseded values are not recommended for survey control.
 HV6428
 HV6428.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6428.See file dsdata.pdf to determine how the superseded data were derived.
 HV6428
 HV6428_MARKER: H = DRILL HOLE
 HV6428_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6428_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6428+STABILITY: SURFACE MOTION
 HV6428
 HV6428  HISTORY     - Date     Condition        Report By
 HV6428  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6428  HISTORY     - 1931     GOOD             CGS
 HV6428  HISTORY     - 1942     GOOD             CGS
 HV6428  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6428
 HV6428                          STATION DESCRIPTION
 HV6428
 HV6428'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6428'STATION IS ON THE EASTERN SHORE OF HONGA RIVER, ON ASQUITH
 HV6428'ISLAND, ABOUT 2-1/2 MILES NE OF HOOPERSVILLE, AND 7/8 MILE N OF
 HV6428'WINDMILL POINT, ON A STRIP OF SANDY MARSH BETWEEN A POND AND
 HV6428'RIVER, ABOUT 2 FEET ABOVE HIGH WATER, 3 YARDS W OF SHORE OF POND,
 HV6428'11 YARDS E OF SHORE OF RIVER, AND 50 YARDS S OF END OF
 HV6428'POINT.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HV6428'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6428'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6428'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6428'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF
 HV6428'2-INCH DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW THE BASE
 HV6428'OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV6428'REFERENCE ARE AS FOLLOWS--NEAR PEAK OF HOUSE, 2 MILES, S 49 DEG
 HV6428'09 MIN W.   NEAR PEAK OF BARN, 2-1/4 MILES, S 54 DEG 03 MIN W.  NEAR
 HV6428'PEAK OF SMALL BARN, 1-3/4 MILES, S 83 DEG 21 MIN W.  NAIL IN
 HV6428'BLAZE IN 15-INCH PINE TREE, 6.04 METERS (19.82 FEET), N 47 DEG
 HV6428'03 MIN W.  LEFT SIDE OF OLD WINDMILL, 2 MILES, N 19 DEG
 HV6428'48 MIN W.  NEAR PEAK OF HOUSE, 2-1/8 MILES, N 22 DEG 47 MIN E.  NAIL
 HV6428'IN BLAZE IN 12-INCH PINE TREE, 17.08 METERS (56.0 FEET),
 HV6428'S 05 DEG 03 MIN W.  NAIL IN BLAZE IN 15-INCH PINE TREE, 7.48
 HV6428'METERS (24.54 FEET), S 21 DEG 47 MIN W.  TANGENT TO OUTSIDE
 HV6428'END OF HOOPER ISLAND WHARF, 1-3/4 MILES, S 37 DEG 17 MIN W.
 HV6428
 HV6428                          STATION RECOVERY (1931)
 HV6428
 HV6428'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1931 (EHB)
 HV6428'DESCRIPTION IS GOOD, EXCEPT THAT BLAZE IN 12-INCH PINE TREE
 HV6428'COULD NOT BE FOUND.  STATION IS 24 FEET N OF 15-INCH PINE TREE
 HV6428'AND 65 FEET S OF 12-INCH PINE TREE.  15-INCH PINE TREE HAS NAIL IN
 HV6428'BLAZE IN DIRECTION OF THE STATION.  THERE IS A PINE FOREST ABOUT
 HV6428'65 FEET E OF STATION AND A CLUMP OF PINE TREES S-SW OF STATION.
 HV6428
 HV6428                          STATION RECOVERY (1942)
 HV6428
 HV6428'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6428'THE STATION IS LOCATED ON THE EASTERN SHORE OF HONGA RIVER,
 HV6428'ON ASQUITH ISLAND, ABOUT 7/8 MILE N OF WINDMILL POINT ON A
 HV6428'NARROW STRIP OF DRY LAND BETWEEN A POND AND THE HONGA RIVER.  THE
 HV6428'STATION IS ABOUT 2 FEET ABOVE HIGH-WATER MARK, 9 FEET E OF THE
 HV6428'POND, 30 FEET W OF THE SHORE OF THE HONGA RIVER AND ABOUT 150
 HV6428'FEET N OF THE SOUTHERN END OF THE POND.
 HV6428'
 HV6428'THE STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 HV6428'A STANDARD MARYLAND SHELL FISH COMMISSION CONCRETE MONUMENT,
 HV6428'8 INCHES SQUARE WITH THE LETTERS M.S.F.C. AND U.S.C.S. COUNTER-SUNK
 HV6428'IN ITS SURFACE.  THE STATION IS A FOOT BELOW THE SURFACE OF THE
 HV6428'GROUND, BUT UNCOVERED.  IT IS IN GOOD CONDITION.
 HV6428'
 HV6428'NO REFERENCE MARKS WERE ESTABLISHED FOR THIS STATION.
 HV6428
 HV6428                          STATION RECOVERY (1961)
 HV6428
 HV6428'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6428'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  THE WITNESS
 HV6428'TREES HAVE BEEN DESTROYED.  THE NARROW STRIP OF LAND BETWEEN THE
 HV6428'RIVER AND THE POND HAS ERODED BADLY AND IT IS BELIEVED THAT THE
 HV6428'STATION HAS BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ6216 ***********************************************************************
 DQ6216  HT_MOD      -  This is a Height Modernization Survey Station.
 DQ6216  CORS        -  This is a GPS Continuously Operating Reference Station.
 DQ6216  DESIGNATION -  ASSATEAGUE CORS ARP
 DQ6216  CORS_ID     -  MDAI
 DQ6216  PID         -  DQ6216
 DQ6216  STATE/COUNTY-  MD/WORCESTER
 DQ6216  COUNTRY     -  US
 DQ6216  USGS QUAD   -  TINGLES ISLAND (2016)
 DQ6216
 DQ6216                         *CURRENT SURVEY CONTROL
 DQ6216  ______________________________________________________________________
 DQ6216* NAD 83(2011) POSITION- 38 08 20.59130(N) 075 11 19.84264(W)   ADJUSTED
 DQ6216* NAD 83(2011) ELLIP HT-   -33.125 (meters)        (04/??/25)   ADJUSTED
 DQ6216* NAD 83(2011) EPOCH   -  2010.00
 DQ6216* NAVD 88 ORTHO HEIGHT -     3.16  (meters)       10.4   (feet) GPS OBS
 DQ6216  ______________________________________________________________________
 DQ6216  GEOID HEIGHT    -        -36.291 (meters)                     GEOID18
 DQ6216  NAD 83(2011) X  -  1,284,020.360 (meters)                     COMP
 DQ6216  NAD 83(2011) Y  - -4,855,993.805 (meters)                     COMP
 DQ6216  NAD 83(2011) Z  -  3,917,574.592 (meters)                     COMP
 DQ6216
 DQ6216  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ6216  Standards:
 DQ6216         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ6216            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ6216  -------------------------------------------------------------------
 DQ6216  NETWORK    0.07   0.13           0.04   0.02   0.06     -0.00059100
 DQ6216  -------------------------------------------------------------------
 DQ6216
 DQ6216.The coordinates were established by GPS observations
 DQ6216.and adjusted by the National Geodetic Survey in April 2025.
 DQ6216
 DQ6216.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ6216.been affixed to the stable North American Tectonic Plate. 
 DQ6216
 DQ6216.The coordinates are valid at the epoch date displayed above
 DQ6216.which is a decimal equivalence of Year/Month/Day.
 DQ6216
 DQ6216.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DQ6216.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DQ6216.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DQ6216.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DQ6216.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DQ6216.published epoch of 2010.00.
 DQ6216
 DQ6216.Additional information on MYCS is available at:
 DQ6216.https://geodesy.noaa.gov/CORS/index.shtml
 DQ6216
 DQ6216.The orthometric height was determined by GPS observations and a
 DQ6216.high-resolution geoid model using precise GPS observation and
 DQ6216.processing techniques.
 DQ6216
 DQ6216.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ6216.GEOID18 height accuracy estimate available here.
 DQ6216
 DQ6216.The PID for the CORS L1 Phase Center is DQ6217.
 DQ6216
 DQ6216.Click photographs - Photos may exist for this station.
 DQ6216
 DQ6216.The XYZ, and position/ellipsoidal ht. are equivalent.
 DQ6216
 DQ6216.The ellipsoidal height was determined by GPS observations
 DQ6216.and is referenced to NAD 83.
 DQ6216
 DQ6216. The following values were computed from the NAD 83(2011) position.
 DQ6216
 DQ6216;                    North         East     Units Scale Factor Converg.
 DQ6216;SPC MD       -    54,012.440   558,771.988   MT  1.00003190   +1 08 12.3
 DQ6216;SPC MD       -   177,205.81  1,833,237.76   sFT  1.00003190   +1 08 12.3
 DQ6216;UTM  18      - 4,221,260.280   483,451.247   MT  0.99960337   -0 06 59.9
 DQ6216
 DQ6216!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ6216!SPC MD       -   1.00000520  x   1.00003190  =   1.00003710
 DQ6216!UTM  18      -   1.00000520  x   0.99960337  =   0.99960857
 DQ6216
 DQ6216_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8345121260(NAD 83)
 DQ6216
 DQ6216                          SUPERSEDED SURVEY CONTROL
 DQ6216
 DQ6216  NAD 83(2011)-  38 08 20.59161(N)    075 11 19.84282(W) AD(2010.00) c
 DQ6216  ELLIP H (08/??/19)  -33.159  (m)                       GP(2010.00) c c
 DQ6216  NAD 83(2011)-  38 08 20.59164(N)    075 11 19.84273(W) AD(2010.00) c
 DQ6216  ELLIP H (08/??/17)  -33.152  (m)                       GP(2010.00) c c
 DQ6216
 DQ6216.Superseded values are not recommended for survey control.
 DQ6216
 DQ6216.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DQ6216.See file dsdata.pdf to determine how the superseded data were derived.
 DQ6216
 DQ6216_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 DQ6216
 DQ6216                          STATION DESCRIPTION
 DQ6216
 DQ6216'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 DQ6216'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 DQ6216'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 DQ6216'AND LOG FILES ACCESSIBLE AT:
 DQ6216'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5876 ***********************************************************************
 JV5876  DESIGNATION -  ASTRO PIER 1966
 JV5876  PID         -  JV5876
 JV5876  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5876  COUNTRY     -  US
 JV5876  USGS QUAD   -  LAUREL (2016)
 JV5876
 JV5876                         *CURRENT SURVEY CONTROL
 JV5876  ______________________________________________________________________
 JV5876* NAD 83(1991) POSITION- 39 01 40.11164(N) 076 49 31.04896(W)   ADJUSTED
 JV5876* NAVD 88 ORTHO HEIGHT -    43.44  (+/-2cm)      142.5   (feet) VERTCON3
 JV5876  ______________________________________________________________________
 JV5876  GEOID HEIGHT    -        -32.377 (meters)                     GEOID18
 JV5876  LAPLACE CORR    -         -5.25  (seconds)                    DEFLEC18
 JV5876  HORZ ORDER      -  FIRST
 JV5876  VERT ORDER      -  THIRD ? (See Below)
 JV5876
 JV5876.The horizontal coordinates were established by classical geodetic methods
 JV5876.and adjusted by the National Geodetic Survey in January 1992.
 JV5876
 JV5876.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5876.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5876
 JV5876.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5876.GEOID18 height accuracy estimate available here.
 JV5876
 JV5876.The vertical order pertains to the NGVD 29 superseded value.
 JV5876
 JV5876.Click photographs - Photos may exist for this station.
 JV5876
 JV5876.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5876
 JV5876. The following values were computed from the NAD 83(1991) position.
 JV5876
 JV5876;                    North         East     Units Scale Factor Converg.
 JV5876;SPC MD       -   151,107.751   415,127.739   MT  0.99995336   +0 06 34.8
 JV5876;SPC MD       -   495,759.35  1,361,964.92   sFT  0.99995336   +0 06 34.8
 JV5876;UTM  18      - 4,321,447.627   342,001.114   MT  0.99990739   -1 08 58.6
 JV5876
 JV5876!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5876!SPC MD       -   0.99999827  x   0.99995336  =   0.99995163
 JV5876!UTM  18      -   0.99999827  x   0.99990739  =   0.99990566
 JV5876
 JV5876:                Primary Azimuth Mark                     Grid Az
 JV5876:SPC MD       -  T 3 PIER AZ MK 2                         114 18 09.9
 JV5876:UTM  18      -  T 3 PIER AZ MK 2                         115 33 43.3
 JV5876
 JV5876_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4200121447(NAD 83)
 JV5876
 JV5876|---------------------------------------------------------------------|
 JV5876| PID    Reference Object                     Distance      Geod. Az  |
 JV5876|                                                           dddmmss.s |
 JV5876| JV5879 150 METERS 1966                     209.725 METERS 03721     |
 JV5876| JV5909 T 3 PIER AZ MK 2                    APPROX. 0.7 KM 1142444.7 |
 JV5876| JV5877 T 3 PIER                             23.983 METERS 12545     |
 JV5876| JV5908 T 3 PIER 1966 AZ MK 3               APPROX. 1.0 KM 1294408.3 |
 JV5876| JV5875 SAT TRACK STA 002                    30.813 METERS 22402     |
 JV5876|---------------------------------------------------------------------|
 JV5876
 JV5876                          SUPERSEDED SURVEY CONTROL
 JV5876
 JV5876  NAD 83(1986)-  39 01 40.10978(N)    076 49 31.05998(W) AD(       ) 1
 JV5876  NAD 27      -  39 01 39.71501(N)    076 49 32.16441(W) AD(       ) 1
 JV5876  NGVD 29              43.66   (m)          143.2    (f) LEVELING    3  
 JV5876
 JV5876.Superseded values are not recommended for survey control.
 JV5876
 JV5876.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5876.See file dsdata.pdf to determine how the superseded data were derived.
 JV5876
 JV5876_MARKER: Z = SEE DESCRIPTION
 JV5876_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV5876_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5876+STABILITY: SURFACE MOTION
 JV5876
 JV5876  HISTORY     - Date     Condition        Report By
 JV5876  HISTORY     - 1966     MONUMENTED       CGS
 JV5876  HISTORY     - 1979     GOOD             NGS
 JV5876
 JV5876                          STATION DESCRIPTION
 JV5876
 JV5876'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV5876'THE STATION IS LOCATED ON THE GROUNDS OF THE BELTSVILLE AGRICULTURE
 JV5876'RESEARCH CENTER AIRPORT, ABOUT 3-1/2 MILES NORTHWEST OF BOWIE,
 JV5876'3-1/2 MILES EAST OF BELTSVILLE, 3 MILES SOUTHEAST OF LAUREL AND
 JV5876'INSIDE A SMALL METAL BUILDING ABOUT 50 FEET NORTHEAST OF THE
 JV5876'GEODETIC SURVEY SATELLITE TRACKING OFFICE AND ABOUT 0.05 MILE NORTH
 JV5876'OF THE NORTH EDGE OF THE EAST-WEST RUNWAY OF THE AIRPORT.
 JV5876'
 JV5876'TO REACH THE STATION FROM THE TRAFFIC LIGHT AT THE INTERSECTION OF
 JV5876'U.S. HIGHWAY 1 AND POWDER MILL RD AT BELTSVILLE, GO EAST ON POWDER
 JV5876'MILL RD. FOR 0.45 MILE TO THE JUNCTION OF EDMONSTON ROAD AND THE
 JV5876'ENTRANCE TO THE AGRICULTURAL RESEARCH CENTER.  CONTINUE EAST ON
 JV5876'POWDER MILL RD, ENTERING THE AGRICULTURAL RESEARCH CENTER FOR 2.8
 JV5876'MILES TO THE INTERSECTION OF POWDER MILL RD AND THE
 JV5876'BALTIMORE-WASHINGTON PARKWAY (BELTSVILLE EXIT).  CONTINUE EAST
 JV5876'ON POWDER MILL RD UNDER THE PARKWAY FOR 0.3 MILE TO THE JUNCTION
 JV5876'OF S.C.S. ROAD AND SIGNS ARC AIRPORT AND C AND GS SATELLITE
 JV5876'TRI.  CONTINUE EAST ON POWDER MILL RD FOR 0.35 MILE TO THE
 JV5876'JUNCTION OF SPRINGFIELD RD AND SIGNS ARC AIRPORT AND C AND GS
 JV5876'SATELLITE TRI.  TURN RIGHT AND GO SOUTHERLY ON SPRINGFIELD RD FOR
 JV5876'0.75 MILE TO A GATE ON THE LEFT.  ENTRANCE TO THE ARC AIRPORT.
 JV5876'TURN LEFT, PASS THROUGH THE GATE AND GO SOUTHEAST ON A BLACK TOP
 JV5876'ROAD FOR 0.15 MILE TO THE NORTH EDGE OF THE EAST-WEST RUNWAY OF THE
 JV5876'AIRPORT.  TURN LEFT AND GO EAST ON THE NORTH EDGE OF THE RUNWAY
 JV5876'FOR 0.3 MILE TO A PAVED ROAD ON THE LEFT.  TURN LEFT AND GO NORTH
 JV5876'FOR 0.05 MILE TO A PARKING AREA ON THE SOUTH SIDE OF THE OFFICE AND
 JV5876'THE STATION AS DESCRIBED ABOVE.
 JV5876'
 JV5876'THE STATION MARK IS A CENTER PUNCH HOLE IN A METAL BAR BOLTED ACROSS
 JV5876'THE TOP OF A METAL PIPE FILLED WITH CONCRETE, 16-INCHES IN DIAMETER
 JV5876'AND PROJECTS ABOUT 3.5 FEET ABOVE THE CONCRETE FLOOR OF THE ASTRO
 JV5876'BUILDING.  THIS MARK IS NOT STAMPED.
 JV5876'
 JV5876'NOTE--AZI 2 AND AZI 3 ARE USED AS AZIMUTH MARKS FOR THIS STATION.
 JV5876'
 JV5876'THERE IS A SEPERATE DESCRIPTION AND ROUTE TO REACH THESE MARKS.
 JV5876
 JV5876                          STATION RECOVERY (1979)
 JV5876
 JV5876'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (CGG)
 JV5876'THE STATION MARK WAS RECOVERED AS PREVIOUSLY DESCRIBED BY
 JV5876'L.G. BURDINE IN 1966 AND FOUND IN GOOD CONDITION.
 JV5876'
 JV5876'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5876'3 MILES SOUTHEAST OF LAUREL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6713 ***********************************************************************
 JV6713  DESIGNATION -  AT T MICROWAVE TOWER
 JV6713  PID         -  JV6713
 JV6713  STATE/COUNTY-  MD/HARFORD
 JV6713  COUNTRY     -  US
 JV6713  USGS QUAD   -  PERRYMAN (2016)
 JV6713
 JV6713                         *CURRENT SURVEY CONTROL
 JV6713  ______________________________________________________________________
 JV6713* NAD 83(1991) POSITION- 39 29 54.63427(N) 076 14 32.83662(W)   ADJUSTED
 JV6713* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV6713  ______________________________________________________________________
 JV6713  GEOID HEIGHT    -        -33.036 (meters)                     GEOID18
 JV6713  LAPLACE CORR    -         -1.96  (seconds)                    DEFLEC18
 JV6713  HORZ ORDER      -  THIRD
 JV6713
 JV6713.The horizontal coordinates were established by classical geodetic methods
 JV6713.and adjusted by the National Geodetic Survey in January 1992.
 JV6713
 JV6713.The orthometric height was scaled from a topographic map.
 JV6713
 JV6713.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6713.GEOID18 height accuracy estimate available here.
 JV6713
 JV6713.Click photographs - Photos may exist for this station.
 JV6713
 JV6713.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6713
 JV6713. The following values were computed from the NAD 83(1991) position.
 JV6713
 JV6713;                    North         East     Units Scale Factor Converg.
 JV6713;SPC MD       -   203,619.792   465,160.289   MT  1.00000885   +0 28 31.7
 JV6713;SPC MD       -   668,042.60  1,526,113.38   sFT  1.00000885   +0 28 31.7
 JV6713;UTM  18      - 4,372,835.896   393,171.078   MT  0.99974051   -0 47 25.3
 JV6713
 JV6713!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6713!SPC MD       -   1.00000522  x   1.00000885  =   1.00001407
 JV6713!UTM  18      -   1.00000522  x   0.99974051  =   0.99974573
 JV6713
 JV6713_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9317172835(NAD 83)
 JV6713
 JV6713                          SUPERSEDED SURVEY CONTROL
 JV6713
 JV6713  NAD 83(1986)-  39 29 54.62836(N)    076 14 32.84287(W) AD(       ) 3
 JV6713
 JV6713.Superseded values are not recommended for survey control.
 JV6713
 JV6713.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6713.See file dsdata.pdf to determine how the superseded data were derived.
 JV6713
 JV6713_MARKER: 45 = MICROWAVE TOWER
 JV6713_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6713_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6713_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6713+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6713
 JV6713  HISTORY     - Date     Condition        Report By
 JV6713  HISTORY     - 1989     FIRST OBSERVED   RDA
 JV6713
 JV6713                          STATION DESCRIPTION
 JV6713
 JV6713'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6713'THE AZIMUTH MARK IS A BEACON ON TOP OF A MICROWAVE TOWER APPROXIMATELY
 JV6713'1 MILE FROM HARFORD COUNTY STATION 18 CALVARY AT AN 72 DEGREES NORTH
 JV6713'AZIMUTH AND APPROXIMATELY 0.5 MILE FROM HARFORD COUNTY STATION 19
 JV6713'VISITOR AT A 287 DEGREE NORTH AZIMUTH AND APPROXIMATELY 1.5 MILES FROM
 JV6713'HARFORD COUNTY STATION 29 CRESWELL AT A 125 DEGREE NORTH AZIMUTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2436 ***********************************************************************
 JV2436  DESIGNATION -  ATERS 2
 JV2436  PID         -  JV2436
 JV2436  STATE/COUNTY-  MD/HOWARD
 JV2436  COUNTRY     -  US
 JV2436  USGS QUAD   -  WOODBINE (2016)
 JV2436
 JV2436                         *CURRENT SURVEY CONTROL
 JV2436  ______________________________________________________________________
 JV2436* NAD 83(1993) POSITION- 39 20 49.48111(N) 077 05 33.03470(W)   ADJUSTED
 JV2436* NAVD 88 ORTHO HEIGHT -   228.09  (meters)      748.3   (feet) RESET
 JV2436  ______________________________________________________________________
 JV2436  GEOID HEIGHT    -        -31.861 (meters)                     GEOID18
 JV2436  LAPLACE CORR    -          0.05  (seconds)                    DEFLEC18
 JV2436  HORZ ORDER      -  SECOND
 JV2436  VERT ORDER      -  THIRD
 JV2436
 JV2436.The horizontal coordinates were established by classical geodetic methods
 JV2436.and adjusted by the National Geodetic Survey in November 1994.
 JV2436
 JV2436.The orthometric height was computed from unverified reset data.
 JV2436
 JV2436.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2436.GEOID18 height accuracy estimate available here.
 JV2436
 JV2436.Click photographs - Photos may exist for this station.
 JV2436
 JV2436.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2436
 JV2436. The following values were computed from the NAD 83(1993) position.
 JV2436
 JV2436;                    North         East     Units Scale Factor Converg.
 JV2436;SPC MD       -   186,541.085   392,025.653   MT  0.99998362   -0 03 29.0
 JV2436;SPC MD       -   612,010.21  1,286,170.83   sFT  0.99998362   -0 03 29.0
 JV2436;UTM  18      - 4,357,381.457   319,686.530   MT  1.00000033   -1 19 37.4
 JV2436
 JV2436!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2436!SPC MD       -   0.99996922  x   0.99998362  =   0.99995284
 JV2436!UTM  18      -   0.99996922  x   1.00000033  =   0.99996955
 JV2436
 JV2436:                Primary Azimuth Mark                     Grid Az
 JV2436:SPC MD       -  RIDGEVILLE NURSERIES TANK                286 56 20.0
 JV2436:UTM  18      -  RIDGEVILLE NURSERIES TANK                288 12 28.4
 JV2436
 JV2436_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1968657381(NAD 83)
 JV2436
 JV2436|---------------------------------------------------------------------|
 JV2436| PID    Reference Object                     Distance      Geod. Az  |
 JV2436|                                                           dddmmss.s |
 JV2436| JV2434 ATERS                                 9.187 METERS 02805     |
 JV2436| JV4067 CATCH 2 RESET                       APPROX. 0.7 KM 0935327.1 |
 JV2436| JV2437 ATERS 2 RM 3                          3.862 METERS 20055     |
 JV2436| JV2438 ATERS 2 RM 4                          6.254 METERS 28415     |
 JV2436| JV4218 RIDGEVILLE NURSERIES TANK           APPROX. 6.7 KM 2865251.0 |
 JV2436|---------------------------------------------------------------------|
 JV2436
 JV2436                          SUPERSEDED SURVEY CONTROL
 JV2436
 JV2436  NAD 83(1991)-  39 20 49.48165(N)    077 05 33.03570(W) AD(       ) 2
 JV2436  NAD 83(1986)-  39 20 49.48043(N)    077 05 33.04467(W) AD(       ) 2
 JV2436  NAD 27      -  39 20 49.10659(N)    077 05 34.12037(W) AD(       ) 2
 JV2436  NGVD 29 (??/??/??)  228.30   (m)          749.0    (f) RESET       3  
 JV2436  NGVD 29             228.26   (m)          748.9    (f) LEVELING    3  
 JV2436
 JV2436.Superseded values are not recommended for survey control.
 JV2436
 JV2436.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2436.See file dsdata.pdf to determine how the superseded data were derived.
 JV2436
 JV2436_MARKER: DS = TRIANGULATION STATION DISK
 JV2436_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2436_STAMPING: ATERS 2 1971
 JV2436_MARK LOGO: CGS
 JV2436_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2436+STABILITY: SURFACE MOTION
 JV2436
 JV2436  HISTORY     - Date     Condition        Report By
 JV2436  HISTORY     - 1971     MONUMENTED       NGS
 JV2436  HISTORY     - 1971     GOOD             NGS
 JV2436
 JV2436                          STATION DESCRIPTION
 JV2436
 JV2436'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV2436'THE STATION IS LOCATED ABOUT 4.0 MILES SOUTHEAST OF MT. AIRY,
 JV2436'0.2 MILE NORTH OF THE VILLAGE OF POPULAR SPRINGS, 0.1 MILE EAST
 JV2436'OF WHERE THE WATERVILLE ROAD PASSES OVER HIGHWAY I-70N, AND ON
 JV2436'THE TOP OF A CUT BANK ON THE SOUTH SIDE OF HIGHWAY I-70N.  IT IS
 JV2436'ON HIGHWAY RIGHT-OF-WAY PROPERTY, ABOUT 3 FEET NORTH OF THE
 JV2436'SURVEYED RIGHT-OF-WAY LINE, 73.0 FEET NORTHEAST OF THE NORTHEAST
 JV2436'CORNER OF A STONE HOUSE, AND 2.0 FEET WEST OF A BOARD FENCE.
 JV2436'THE MARK IS SET FLUSH WITH THE GROUND AND THE DISK IS STAMPED,
 JV2436'ATERS 2 1971.
 JV2436'
 JV2436'REFERENCE MARK NO. 3 US 62.7 FEET NORTHEAST OF THE NORTHEAST
 JV2436'CORNER OF A STONE HOUSE, 11.0 FEET SOUTHWEST OF THE SURVEYED
 JV2436'RIGHT-OF-WAY LINE, 1.3 FEET NORTHWEST OF A BOARD FENCE, NEAR THE
 JV2436'NORTHEAST CORNER OF A YARD AND ON PROPERTY OF MR. J. HOWARD.  IT
 JV2436'IS SET FLUSH WITH THE GROUND AND THE DISK IS STAMPED, ATERS 2
 JV2436'NO 3 1971.
 JV2436'
 JV2436'REFERENCE MARK NO. 4 IS 63.4 FEET NORTH-NORTHEAST OF THE
 JV2436'NORTHEAST CORNER OF A STONE HOUSE, 22 FEET WEST-NORTHWEST OF A
 JV2436'BOARD FENCE, 3.5 FEET NORTHEAST OF THE SURVEYED RIGHT-OF-WAY
 JV2436'LINE, AND IS ON HIGHWAY RIGHT-OF-WAY PROPERTY.  IT IS SET FLUSH
 JV2436'WITH THE GROUND AND THE DISK IS STAMPED, ATERS 2 NO 4 1971.
 JV2436'
 JV2436'STATION CATCH 2 1971, OR EITHER THE WATER TANK AND/OR THE
 JV2436'CHURCH SPIRE SHOWN ABOVE CAN SERVE FOR AZIMUTH MARKS.
 JV2436'
 JV2436'TO REACH FROM THE INTERSECTION OF I-70N AND ST. HWY. 27, SOUTH
 JV2436'OF MOUNT AIRY.  GO EASTERLY ON HIGHWAY I-70N FOR 1.6 MILES TO
 JV2436'THE COUNTY LINE, CONTINUE ON HIGHWAY FOR 2.55 MILES TO OVERHEAD
 JV2436'BRIDGE, CONTINUE AHEAD FOR 0.1 MILE TO STATION SITE ON RIGHT AT
 JV2436'TOP OF CUT BANK AS DESCRIBED.
 JV2436
 JV2436                          STATION RECOVERY (1971)
 JV2436
 JV2436'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV2436'4.2 MI E FROM RIDGEVILLE.
 JV2436'ABOUT 4.2 MILES EAST ALONG INTERSTATE HIGHWAY I-70N, FROM THE
 JV2436'JUNCTION OF STATE HIGHWAY NO. 27, JUST SOUTH OF RIDGEVILLE,
 JV2436'0.1 MILE EAST OF WHERE WATERVILLE ROAD CROSSES OVER I-70N,
 JV2436'ON THE TOP OF A CUT BANK ON SOUTH SIDE OF HIGHWAY.  IT IS ABOUT
 JV2436'0.2 MILE NORTH OF THE VILLAGE OF POPULAR SPRINGS, ON PROPERTY
 JV2436'OF HIGHWAY RIGHT-OF-WAY AND ABOUT 3 FEET NORTH OF THE SOUTH
 JV2436'BOUNDARY SURVEYED LINE OF RIGHT-OF-WAY, 73.0 FEET NORTHEAST
 JV2436'OF THE NORTHEAST CORNER OF A STONE HOUSE, AND 2.0 FEET WEST
 JV2436'OF A BOARD FENCE.  THE DISK IS SET IN THE TOP OF A ROUND CONCRETE
 JV2436'MONUMENT SET FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2437 ***********************************************************************
 JV2437  DESIGNATION -  ATERS 2 RM 3
 JV2437  PID         -  JV2437
 JV2437  STATE/COUNTY-  MD/HOWARD
 JV2437  COUNTRY     -  US
 JV2437  USGS QUAD   -  WOODBINE (2016)
 JV2437
 JV2437                         *CURRENT SURVEY CONTROL
 JV2437  ______________________________________________________________________
 JV2437* NAD 83(1986) POSITION- 39 20 49.36   (N) 077 05 33.09   (W)   HD_HELD1
 JV2437* NAVD 88 ORTHO HEIGHT -   228.16  (meters)      748.6   (feet) RESET
 JV2437  ______________________________________________________________________
 JV2437  GEOID HEIGHT    -        -31.861 (meters)                     GEOID18
 JV2437  VERT ORDER      -  THIRD
 JV2437
 JV2437.The horizontal coordinates were determined by differentially corrected
 JV2437.hand held GPS observations or other comparable positioning techniques
 JV2437.and have an estimated accuracy of +/- 3 meters.
 JV2437
 JV2437.The orthometric height was computed from unverified reset data.
 JV2437
 JV2437.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2437.GEOID18 height accuracy estimate available here.
 JV2437
 JV2437.Click photographs - Photos may exist for this station.
 JV2437
 JV2437;                    North         East    Units  Estimated Accuracy
 JV2437;SPC MD       -   186,537.4     392,024.3     MT  (+/- 3 meters HH1 GPS) 
 JV2437
 JV2437_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1968557377(NAD 83)
 JV2437
 JV2437                          SUPERSEDED SURVEY CONTROL
 JV2437
 JV2437  NGVD 29 (??/??/??)  228.37   (m)          749.2    (f) RESET       3  
 JV2437
 JV2437.Superseded values are not recommended for survey control.
 JV2437
 JV2437.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2437.See file dsdata.pdf to determine how the superseded data were derived.
 JV2437
 JV2437_MARKER: DR = REFERENCE MARK DISK
 JV2437_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2437_STAMPING: ATERS 2 NO 3 1971
 JV2437_MARK LOGO: CGS
 JV2437_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2437+STABILITY: SURFACE MOTION
 JV2437
 JV2437  HISTORY     - Date     Condition        Report By
 JV2437  HISTORY     - 1971     MONUMENTED       NGS
 JV2437
 JV2437                          STATION DESCRIPTION
 JV2437
 JV2437'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV2437'4.2 MI E FROM RIDGEVILLE.
 JV2437'ABOUT 4.2 MILES EAST ALONG INTERSTATE HIGHWAY I-70N, FROM THE
 JV2437'JUNCTION OF STATE HIGHWAY NO. 27, JUST SOUTH OF RIDGEVILLE,
 JV2437'0.1 MILE EAST OF WHERE WATERVILLE ROAD CROSSES OVER I-70N, ON
 JV2437'THE TOP OF A CUT BANK AT SOUTH EDGE OF HIGHWAY RIGHT-OF-WAY.  IT
 JV2437'IS IN THE NORTHEAST CORNER OF A YARD, 62.7 FEET NORTHEAST OF
 JV2437'THE NORTHEAST CORNER OF A STONE HOUSE, 11.0 FEET SOUTHWEST OF
 JV2437'THE SURVEYED RIGHT-OF-WAY LINE, AND 1.3 FEET NORTHWEST OF A BOARD
 JV2437'FENCE.  SET IN THE TOP OF A ROUND CONCRETE MONUMENT THAT IS
 JV2437'FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2438 ***********************************************************************
 JV2438  DESIGNATION -  ATERS 2 RM 4
 JV2438  PID         -  JV2438
 JV2438  STATE/COUNTY-  MD/HOWARD
 JV2438  COUNTRY     -  US
 JV2438  USGS QUAD   -  WOODBINE (2016)
 JV2438
 JV2438                         *CURRENT SURVEY CONTROL
 JV2438  ______________________________________________________________________
 JV2438* NAD 83(1986) POSITION- 39 20 49.53   (N) 077 05 33.29   (W)   HD_HELD1
 JV2438* NAVD 88 ORTHO HEIGHT -   227.95  (meters)      747.9   (feet) RESET
 JV2438  ______________________________________________________________________
 JV2438  GEOID HEIGHT    -        -31.861 (meters)                     GEOID18
 JV2438  VERT ORDER      -  THIRD
 JV2438
 JV2438.The horizontal coordinates were determined by differentially corrected
 JV2438.hand held GPS observations or other comparable positioning techniques
 JV2438.and have an estimated accuracy of +/- 3 meters.
 JV2438
 JV2438.The orthometric height was computed from unverified reset data.
 JV2438
 JV2438.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2438.GEOID18 height accuracy estimate available here.
 JV2438
 JV2438.Click photographs - Photos may exist for this station.
 JV2438
 JV2438;                    North         East    Units  Estimated Accuracy
 JV2438;SPC MD       -   186,542.6     392,019.5     MT  (+/- 3 meters HH1 GPS) 
 JV2438
 JV2438_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1968057383(NAD 83)
 JV2438
 JV2438                          SUPERSEDED SURVEY CONTROL
 JV2438
 JV2438  NGVD 29 (??/??/??)  228.16   (m)          748.6    (f) RESET       3  
 JV2438
 JV2438.Superseded values are not recommended for survey control.
 JV2438
 JV2438.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2438.See file dsdata.pdf to determine how the superseded data were derived.
 JV2438
 JV2438_MARKER: DR = REFERENCE MARK DISK
 JV2438_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2438_STAMPING: ATERS 2 NO 4 1971
 JV2438_MARK LOGO: CGS
 JV2438_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2438+STABILITY: SURFACE MOTION
 JV2438
 JV2438  HISTORY     - Date     Condition        Report By
 JV2438  HISTORY     - 1971     MONUMENTED       NGS
 JV2438
 JV2438                          STATION DESCRIPTION
 JV2438
 JV2438'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV2438'4.2 MI E FROM RIDGEVILLE.
 JV2438'ABOUT 4.2 MILES EAST ALONG INTERSTATE HIGHWAY I-70N, FROM THE
 JV2438'JUNCTION OF STATE HIGHWAY NO. 27, JUST SOUTH OF RIDGEVILLE,
 JV2438'0.1 MILE EAST OF WHERE WATERVILLE ROAD CROSSES OVER I-70N, ON THE
 JV2438'TOP OF A CUT BANK AT THE SOUTH EDGE OF HIGHWAY RIGHT-OF-WAY.  IT
 JV2438'IS 3.5 FEET NORTHEAST OF THE SURVEYED RIGHT-OF-WAY LINE, 63.4
 JV2438'FEET NORTH-NORTHEAST OF THE NORTHEAST CORNER OF A STONE HOUSE,
 JV2438'22 FEET WEST-NORTHWEST OF A BOARD FENCE.  SET IN THE TOP OF A
 JV2438'ROUND CONCRETE MONUMENT THAT IS FLUSH WITH SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9701 ***********************************************************************
 HV9701  DESIGNATION -  ATHA
 HV9701  PID         -  HV9701
 HV9701  STATE/COUNTY-  MD/ST MARYS
 HV9701  COUNTRY     -  US
 HV9701  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV9701
 HV9701                         *CURRENT SURVEY CONTROL
 HV9701  ______________________________________________________________________
 HV9701* NAD 83(2011) POSITION- 38 07 21.04601(N) 076 25 19.93407(W)   ADJUSTED
 HV9701* NAD 83(2011) ELLIP HT-   -33.057 (meters)        (06/27/12)   ADJUSTED
 HV9701* NAD 83(2011) EPOCH   -  2010.00
 HV9701* NAVD 88 ORTHO HEIGHT -     1.9   (meters)        6.    (feet) GPS OBS
 HV9701  ______________________________________________________________________
 HV9701  NAVD 88 orthometric height was determined with geoid model    GEOID96
 HV9701  GEOID HEIGHT    -        -34.852 (meters)                     GEOID96
 HV9701  GEOID HEIGHT    -        -34.891 (meters)                     GEOID18
 HV9701  NAD 83(2011) X  -  1,179,466.149 (meters)                     COMP
 HV9701  NAD 83(2011) Y  - -4,883,608.674 (meters)                     COMP
 HV9701  NAD 83(2011) Z  -  3,916,130.468 (meters)                     COMP
 HV9701  LAPLACE CORR    -         -6.08  (seconds)                    DEFLEC18
 HV9701
 HV9701  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9701  Standards:
 HV9701         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9701            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9701  -------------------------------------------------------------------
 HV9701  NETWORK    0.78   1.23           0.34   0.29   0.63      0.11913711
 HV9701  -------------------------------------------------------------------
 HV9701  Click here for local accuracies and other accuracy information.
 HV9701
 HV9701.The horizontal coordinates were established by GPS observations
 HV9701.and adjusted by the National Geodetic Survey in June 2012.
 HV9701
 HV9701.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9701.been affixed to the stable North American tectonic plate. See 
 HV9701.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9701
 HV9701.The horizontal coordinates are valid at the epoch date displayed above
 HV9701.which is a decimal equivalence of Year/Month/Day.
 HV9701
 HV9701.The orthometric height was determined by GPS observations and a
 HV9701.high-resolution geoid model.
 HV9701
 HV9701.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9701.GEOID18 height accuracy estimate available here.
 HV9701
 HV9701.Click photographs - Photos may exist for this station.
 HV9701
 HV9701.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9701
 HV9701.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9701
 HV9701.The ellipsoidal height was determined by GPS observations
 HV9701.and is referenced to NAD 83.
 HV9701
 HV9701. The following values were computed from the NAD 83(2011) position.
 HV9701
 HV9701;                    North         East     Units Scale Factor Converg.
 HV9701;SPC MD       -    50,761.696   450,666.175   MT  1.00003562   +0 21 45.5
 HV9701;SPC MD       -   166,540.66  1,478,560.61   sFT  1.00003562   +0 21 45.5
 HV9701;SPC VA S     - 1,200,569.381 3,682,185.067   MT  1.00003216   +1 15 39.8
 HV9701;SPC VA S     - 3,938,868.04 12,080,635.51   sFT  1.00003216   +1 15 39.8
 HV9701;UTM  18      - 4,220,363.460   375,339.237   MT  0.99979139   -0 52 41.2
 HV9701
 HV9701!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9701!SPC MD       -   1.00000519  x   1.00003562  =   1.00004081
 HV9701!SPC VA S     -   1.00000519  x   1.00003216  =   1.00003735
 HV9701!UTM  18      -   1.00000519  x   0.99979139  =   0.99979658
 HV9701
 HV9701_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7533920363(NAD 83)
 HV9701
 HV9701                          SUPERSEDED SURVEY CONTROL
 HV9701
 HV9701  NAD 83(2007)-  38 07 21.04668(N)    076 25 19.93451(W) AD(2002.00) 0
 HV9701  ELLIP H (02/10/07)  -33.054  (m)                       GP(2002.00)    
 HV9701  ELLIP H (08/30/02)  -33.011  (m)                       GP(       ) 4 2
 HV9701  NAD 83(1991)-  38 07 21.04585(N)    076 25 19.93379(W) AD(       ) 1
 HV9701  ELLIP H (05/28/98)  -32.985  (m)                       GP(       ) 3 1
 HV9701  NAD 83(1991)-  38 07 21.04572(N)    076 25 19.93368(W) AD(       ) 1
 HV9701  ELLIP H (11/16/93)  -32.984  (m)                       GP(       ) 3 1
 HV9701  NAVD 88 (11/16/93)    1.9    (m)  GEOID93  model used  GPS OBS        
 HV9701
 HV9701.Superseded values are not recommended for survey control.
 HV9701
 HV9701.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9701.See file dsdata.pdf to determine how the superseded data were derived.
 HV9701
 HV9701_MARKER: DD = SURVEY DISK
 HV9701_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9701_STAMPING: ATH-A3-1982
 HV9701_MARK LOGO: DMA
 HV9701_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV9701_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9701+STABILITY: SURFACE MOTION
 HV9701_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9701+SATELLITE: SATELLITE OBSERVATIONS - November 17, 1992
 HV9701
 HV9701  HISTORY     - Date     Condition        Report By
 HV9701  HISTORY     - 1982     MONUMENTED       DMA
 HV9701  HISTORY     - 19921117 SEE DESCRIPTION  MCCRON
 HV9701  HISTORY     - 19990117 POOR             USPSQD
 HV9701
 HV9701                          STATION DESCRIPTION
 HV9701
 HV9701'DESCRIBED BY J R MCCRONE JR INCORPORATED 1992
 HV9701'STATION IS LOCATED ABOUT 8 MI (12.9 KM) NORTHWEST OF POINT LOOKOUT AND
 HV9701'ABOUT 10 MI (16.1 KM) SOUTH OF LEXINGTON PARK.
 HV9701'TO REACH FROM THE INTERSECTION OF ROUTE 5 AND 235 AT RIDGE, GO NORTH
 HV9701'ON ROUTE 5 FOR 2.3 MI (3.7 KM) TO BEACHVILLE ROAD. TURN LEFT ON
 HV9701'BEACHVILLE ROAD FOR 2.6 MI (4.2 KM) TO STATION ON RIGHT.
 HV9701'STATION IS ON THE WEST SIDE OF THE ROAD AT THE EDGE OF A FIELD, 19 FT
 HV9701'(5.8 M) WEST OF THE CENTERLINE OF THE ROAD, 185 FT (56.4 M) SOUTH OF
 HV9701'POWERPOLE NO.72, AND 105 FT (32.0 M) NORTH OF AN UNNUMBERED POWERPOLE
 HV9701'ON THE WEST SIDE OF THE ROAD. STATION IS MARKED WITH A 3 FT (0.9 M)
 HV9701'TALL WITNESS POST.
 HV9701'NOTE - STATION WAS RECOVERED IN REASONABLY GOOD CONDITION, ALTHOUGH
 HV9701'MONUMENT AND DISK APPEARED DAMAGED.
 HV9701
 HV9701                          STATION RECOVERY (1999)
 HV9701
 HV9701'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV9701'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2900 ***********************************************************************
 JV2900  DESIGNATION -  ATHEY
 JV2900  PID         -  JV2900
 JV2900  STATE/COUNTY-  MD/MONTGOMERY
 JV2900  COUNTRY     -  US
 JV2900  USGS QUAD   -  SENECA (2016)
 JV2900
 JV2900                         *CURRENT SURVEY CONTROL
 JV2900  ______________________________________________________________________
 JV2900* NAD 83(2011) POSITION- 39 06 11.46958(N) 077 17 21.68642(W)   ADJUSTED
 JV2900* NAD 83(2011) ELLIP HT-   104.150 (meters)        (06/27/12)   ADJUSTED
 JV2900* NAD 83(2011) EPOCH   -  2010.00
 JV2900* NAVD 88 ORTHO HEIGHT -   136.005 (meters)      446.21  (feet) ADJUSTED
 JV2900  ______________________________________________________________________
 JV2900  GEOID HEIGHT    -        -31.794 (meters)                     GEOID18
 JV2900  NAD 83(2011) X  -  1,090,497.862 (meters)                     COMP
 JV2900  NAD 83(2011) Y  - -4,834,733.115 (meters)                     COMP
 JV2900  NAD 83(2011) Z  -  4,001,278.690 (meters)                     COMP
 JV2900  LAPLACE CORR    -          2.97  (seconds)                    DEFLEC18
 JV2900  DYNAMIC HEIGHT  -        135.934 (meters)      445.98  (feet) COMP
 JV2900  MODELED GRAVITY -    980,102.8   (mgal)                       NAVD 88
 JV2900
 JV2900  VERT ORDER      -  SECOND    CLASS 0
 JV2900
 JV2900  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV2900  Standards:
 JV2900         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV2900            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV2900  -------------------------------------------------------------------
 JV2900  NETWORK    1.10   2.25           0.45   0.45   1.15     -0.03493386
 JV2900  -------------------------------------------------------------------
 JV2900  Click here for local accuracies and other accuracy information.
 JV2900
 JV2900.The horizontal coordinates were established by GPS observations
 JV2900.and adjusted by the National Geodetic Survey in June 2012.
 JV2900
 JV2900.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV2900.been affixed to the stable North American tectonic plate. See 
 JV2900.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV2900
 JV2900.The horizontal coordinates are valid at the epoch date displayed above
 JV2900.which is a decimal equivalence of Year/Month/Day.
 JV2900
 JV2900.The orthometric height was determined by differential leveling and
 JV2900.adjusted by the NATIONAL GEODETIC SURVEY
 JV2900.in June 1991.
 JV2900
 JV2900.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2900.GEOID18 height accuracy estimate available here.
 JV2900
 JV2900.Click photographs - Photos may exist for this station.
 JV2900
 JV2900.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV2900
 JV2900.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2900
 JV2900.The ellipsoidal height was determined by GPS observations
 JV2900.and is referenced to NAD 83.
 JV2900
 JV2900.The dynamic height is computed by dividing the NAVD 88
 JV2900.geopotential number by the normal gravity value computed on the
 JV2900.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2900.degrees latitude (g = 980.6199 gals.).
 JV2900
 JV2900.The modeled gravity was interpolated from observed gravity values.
 JV2900
 JV2900. The following values were computed from the NAD 83(2011) position.
 JV2900
 JV2900;                    North         East     Units Scale Factor Converg.
 JV2900;SPC MD       -   159,500.700   374,971.563   MT  0.99995770   -0 10 53.8
 JV2900;SPC MD       -   523,295.21  1,230,219.20   sFT  0.99995770   -0 10 53.8
 JV2900;SPC VA N     - 2,160,146.787 3,604,716.441   MT  0.99998425   +0 45 20.1
 JV2900;SPC VA N     - 7,087,081.58 11,826,473.86   sFT  0.99998425   +0 45 20.1
 JV2900;UTM  18      - 4,330,722.556   302,037.906   MT  1.00008256   -1 26 39.9
 JV2900
 JV2900!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2900!SPC MD       -   0.99998366  x   0.99995770  =   0.99994136
 JV2900!SPC VA N     -   0.99998366  x   0.99998425  =   0.99996791
 JV2900!UTM  18      -   0.99998366  x   1.00008256  =   1.00006622
 JV2900
 JV2900:                Primary Azimuth Mark                     Grid Az
 JV2900:SPC MD       -  ATHEY AZ MK RESET                        076 40 04.4
 JV2900:SPC VA N     -  ATHEY AZ MK RESET                        075 43 50.5
 JV2900:UTM  18      -  ATHEY AZ MK RESET                        077 55 50.5
 JV2900
 JV2900_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0203730722(NAD 83)
 JV2900
 JV2900|---------------------------------------------------------------------|
 JV2900| PID    Reference Object                     Distance      Geod. Az  |
 JV2900|                                                           dddmmss.s |
 JV2900| JV4455 GERMANTOWN AEC TANK                 APPROX. 8.8 KM 0185623.9 |
 JV2900| CK6546 ATHEY AZ MK                                        0481701.4 |
 JV2900| JV6896 ATHEY AZ MK 2                       376.259 METERS 06449     |
 JV2900| JV6695 ATHEY AZ MK RESET                                  0762910.6 |
 JV2900| JV2901 ATHEY RM 2                           29.338 METERS 07808     |
 JV2900| JV4376 ROCKVILLE SMALL MUN TANK            APPROX.11.3 KM 0983642.8 |
 JV2900| JV4269 BETHESDA NAVAL MED CTR BCN          APPROX.20.3 KM 1233700.4 |
 JV2900| HV4103 BETHESDA BRADLEY HILLS S SPIPE      APPROX.20.5 KM 1315141.6 |
 JV2900| CK6547 ATHEY RM 1                           32.147 METERS 29244     |
 JV2900| JV6694 ATHEY RM 3                           20.532 METERS 32908     |
 JV2900| JV4461 BROWNSTOWN PEPCO MICROWAVE          APPROX. 3.8 KM 3545212.3 |
 JV2900|---------------------------------------------------------------------|
 JV2900
 JV2900                          SUPERSEDED SURVEY CONTROL
 JV2900
 JV2900  NAD 83(2007)-  39 06 11.46915(N)    077 17 21.68702(W) AD(2002.00) 0
 JV2900  ELLIP H (02/10/07)  104.256  (m)                       GP(2002.00)    
 JV2900  ELLIP H (08/30/02)  104.213  (m)                       GP(       ) 4 2
 JV2900  NAD 83(1993)-  39 06 11.46930(N)    077 17 21.68669(W) AD(       ) 1
 JV2900  ELLIP H (11/14/94)  104.145  (m)                       GP(       ) 4 2
 JV2900  NAD 83(1991)-  39 06 11.46848(N)    077 17 21.68692(W) AD(       ) 1
 JV2900  ELLIP H (01/27/92)  104.159  (m)                       GP(       ) 4 1
 JV2900  NAD 83(1986)-  39 06 11.46894(N)    077 17 21.69726(W) AD(       ) 1
 JV2900  NAD 27      -  39 06 11.08082(N)    077 17 22.74964(W) AD(       ) 1
 JV2900  NAVD 88             136.00   (m)          446.2    (f) LEVELING    3  
 JV2900  NGVD 29             136.23   (m)          446.9    (f) LEVELING    3  
 JV2900  NGVD 29 (11/26/84)  136.226  (m)          446.93   (f) ADJUSTED    2 0
 JV2900
 JV2900.Superseded values are not recommended for survey control.
 JV2900
 JV2900.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2900.See file dsdata.pdf to determine how the superseded data were derived.
 JV2900
 JV2900_MARKER: DS = TRIANGULATION STATION DISK
 JV2900_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2900_STAMPING: ATHEY 1943
 JV2900_MARK LOGO: CGS
 JV2900_PROJECTION: RECESSED 30 CENTIMETERS
 JV2900_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2900+STABILITY: SURFACE MOTION
 JV2900_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2900+SATELLITE: SATELLITE OBSERVATIONS - September 03, 2020
 JV2900
 JV2900  HISTORY     - Date     Condition        Report By
 JV2900  HISTORY     - 1943     MONUMENTED       CGS
 JV2900  HISTORY     - 1943     GOOD             CGS
 JV2900  HISTORY     - 1957     GOOD             CGS
 JV2900  HISTORY     - 1965     GOOD             WSSC
 JV2900  HISTORY     - 1966     GOOD             CGS
 JV2900  HISTORY     - 1969     GOOD             CGS
 JV2900  HISTORY     - 1987     GOOD             NGS
 JV2900  HISTORY     - 19900222 GOOD             WSSC
 JV2900  HISTORY     - 19900302 GOOD             NGS
 JV2900  HISTORY     - 19921014 GOOD             NGS
 JV2900  HISTORY     - 20190807 GOOD             NGS
 JV2900  HISTORY     - 20200903 GOOD             NGS
 JV2900
 JV2900                          STATION DESCRIPTION
 JV2900
 JV2900'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (FBQ)
 JV2900'STATION IS LOCATED NEAR THE EASTERN EDGE OF THE VILLAGE OF
 JV2900'DARNESTOWN ON PROPERTY OWNED AND OCCUPIED BY MR. THOMAS
 JV2900'ATHEY.  IT IS LOCATED IN THE E CORNER OF A DAIRY BARN LOT,
 JV2900'69 FEET SE OF THE E CORNER OF A LARGE DAIRY BARN, 56 FEET SE OF
 JV2900'THE SE EDGE OF A WOOD GATE, 38 FEET NW OF THE CENTER LINE OF
 JV2900'STATE HIGHWAY 28, 20 FEET W OF A FENCE CORNER AND 12 FEET SW
 JV2900'OF A FENCE.  IT IS STAMPED ATHEY 1943 AND IS SET 12 INCHES
 JV2900'BELOW THE SURFACE OF THE GROUND.
 JV2900'
 JV2900'SURFACE, UNDERGROUND, REFERENCE MARK NO.2, AND THE AZIMUTH
 JV2900'MARK ARE BRONZE DISKS SET IN CONCRETE.
 JV2900'
 JV2900'REFERENCE MARK NO.1 IS W BY N OF THE STATION, SET IN A DRILL
 JV2900'HOLE IN A CONCRETE FOUNDATION BETWEEN THE DAIRY BARN AND A MILK
 JV2900'SHED, 1 FOOT NE OF THE MILK SHED AND 1.5 FEET NW OF THE SE EDGE
 JV2900'OF THE FOUNDATION.  IT IS STAMPED ATHEY NO.1 1943.
 JV2900'
 JV2900'REFERENCE MARK NO.2 IS ENE OF THE STATION, 25 FEET NW OF THE
 JV2900'CENTER LINE OF STATE HIGHWAY 28, 3 FEET SW OF A TELEPHONE
 JV2900'POLE AND 1 FOOT NW OF A FENCE.  IT IS STAMPED ATHEY NO.2 1943
 JV2900'AND PROJECTS 2 INCHES.
 JV2900'
 JV2900'THE AZIMUTH MARK IS SE OF THE STATION, 20 FEET SE OF THE CENTER
 JV2900'LINE OF STATE HIGHWAY 28, 7 FEET S OF A WHITE REFERENCE POST,
 JV2900'6 FEET SW OF TELEPHONE POLE NO.235 AND 1 FOOT NW OF A FENCE.  IT
 JV2900'IS STAMPED ATHEY 1943 AND PROJECTS 3 INCHES.
 JV2900'
 JV2900'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 28
 JV2900'AND 112 IN DARNESTOWN, GO EASTERLY ON HIGHWAY 28 FOR 0.1 MILE TO
 JV2900'ATHEYS DAIRY ON THE LEFT AND THE STATION.  TO REACH THE
 JV2900'AZIMUTH MARK, CONTINUE AHEAD ON HIGHWAY 28 FOR 0.7 MILE TO THE
 JV2900'MARK ON THE RIGHT.
 JV2900'
 JV2900'A 90-FOOT SIGNAL AT SENECA IS VISIBLE AT 50 FEET.  A 90-FOOT
 JV2900'SIGNAL AT SANDY 1931 (P.B.-P.P.), A 90-FOOT SIGNAL AT ELZEY
 JV2900'1931 (P.B.-P.P.), A 90-FOOT SIGNAL AT DRANES, A 77-FOOT SIGNAL
 JV2900'AT DAYS, A 77-FOOT SIGNAL AT GOOSE 1942, A 77-FOOT SIGNAL AT
 JV2900'POOLESVILLE 2, AND A 77-FOOT SIGNAL AT OXLEYS HILL 2 ARE VISIBLE
 JV2900'AT 90 FEET.
 JV2900'
 JV2900'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV2900
 JV2900                          STATION RECOVERY (1943)
 JV2900
 JV2900'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV2900'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE DESCRIPTION BY
 JV2900'F.B.Q. WRITTEN IN 1943 WAS NOT AVAILABLE AND SO COULD NOT BE
 JV2900'CHECKED.  FOLLOWING IS A COMPLETE NEW DESCRIPTION--
 JV2900'
 JV2900'THE STATION IS LOCATED IN THE EASTERN EDGE OF THE VILLAGE OF
 JV2900'DARNESTOWN ON THE GROUNDS OF A DAIRY OWNED BY MR. THOMAS ATHEY.
 JV2900'IT IS THE SE CORNER OF THE LAWN IN FRONT OF THE COW BARN, 36 FEET N
 JV2900'OF THE CENTER OF STATE HIGHWAY 28 AND 16 FEET W OF N AND S FENCE.
 JV2900'IT IS SET 6 INCHES BELOW THE SURFACE OF THE GROUND AND THE DISK
 JV2900'IS STAMPED ATHEY 1943.
 JV2900'
 JV2900'REFERENCE MARK NO. 1 IS SET IN THE WALK BETWEEN THE MILK HOUSE AND
 JV2900'THE COW BARN.  THE DISK IS STAMPED ATHEY NO. 1 1943.
 JV2900'
 JV2900'REFERENCE MARK NO. 2 IS SET IN THE FENCE LINE E OF THE STATION.
 JV2900'IT PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED ATHEY NO. 2 1943.
 JV2900'
 JV2900'THE AZIMUTH MARK IS SET IN THE RIGHT-OF-WAY FENCE LINE ON THE SE
 JV2900'SIDE OF STATE HIGHWAY 28, 0.7 MILE BY ROAD NE OF THE STATION.  IT
 JV2900'PROJECTS ABOUT 6 INCHES AND THE DISK IS STAMPED ATHEY 1943.
 JV2900'
 JV2900'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 28 AND 112
 JV2900'IN DARNESTOWN GO EASTERLY ON HIGHWAY 28 FOR 0.1 MILE TO THE ATHEY
 JV2900'DAIRY AND THE STATION ON THE LEFT.
 JV2900'
 JV2900'A 4-FOOT STAND WILL SEE AN 87-FOOT LIGHT AT POOLESVILLE 2 1943.
 JV2900'
 JV2900'A 4-FOOT STAND WILL SEE A 113-FOOT LIGHT AT COMUS.
 JV2900'
 JV2900'A 50-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT OXLEYS HILL 2 1943.
 JV2900'
 JV2900'A 37-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT HEAP.
 JV2900'
 JV2900'A 37-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT SCHOOL.
 JV2900'
 JV2900'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT GAITHERSBURG.
 JV2900
 JV2900                          STATION RECOVERY (1957)
 JV2900
 JV2900'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV2900'STATION AND REFERENCE MARK 2 RECOVERED AS DESCRIBED AND FOUND IN GOOD
 JV2900'CONDITION, BUT REFERENCE MARK 2 APPEARS TO BE TILTED SLIGHTLY.
 JV2900'REFERENCE MARK 1 AND AZIMUTH MARK HAVE BEEN DESTROYED.  THEREFORE
 JV2900'REFERENCE MARK 3 AND A NEW AZIMUTH MARK WERE ESTABLISHED.
 JV2900'
 JV2900'A NEW DESCRIPTION FOLLOWS--
 JV2900'
 JV2900'STATION IS LOCATED IN THE E EDGE OF THE VILLAGE OF DARNESTOWN,
 JV2900'ABOUT 7.0 MI. W-NW OF ROCKVILLE AND ABOUT 5.0 MI. W-SW OF
 JV2900'GAITHERSBURG.  STATION IS 37-1/2 FT. N OF THE APPROXIMATE
 JV2900'CENTERLINE OF STATE HIGHWAY 28, AND 18-1/2 FT. NW OF A FENCE
 JV2900'CORNER.  THE MARK IS ABOUT 10 IN. BELOW THE SURFACE OF THE GROUND
 JV2900'AND THE DISK IS STAMPED ATHEY 1943.
 JV2900'
 JV2900'REFERENCE MARK 2 IS 10 FT. W OF A FENCE CORNER, 3-1/2 FT. N OF A
 JV2900'POWER POLE, AND 27-1/2 FT. N OF THE APPROXIMATE CENTERLINE OF STATE
 JV2900'HIGHWAY 28.  THE MARK PROJECTS 2 IN. AND THE DISK IS STAMPED ATHEY
 JV2900'NO 2 1943.
 JV2900'
 JV2900'REFERENCE MARK 3 IS 3-1/2 FT. E OF THE SE CORNER OF THE CONCRETE
 JV2900'BLOCK BUILDING, 33-1/2 FT. W OF THE CENTER OF THE GATE, AND 10 FT. N
 JV2900'OF THE APPROXIMATE CENTERLINE OF A TRACK ROAD.  THE MARK PROJECTS
 JV2900'2 IN. AND THE DISK IS STAMPED ATHEY NO 3 1943.
 JV2900'
 JV2900'AZIMUTH MARK IS 14 FT. N OF THE APPROXIMATE CENTERLINE OF A SURFACED
 JV2900'ROAD, 2-1/2 FT. E OF A FENCE CORNER, AND 1/2 FT. S OF A FENCE.
 JV2900'THE MARK PROJECTS 4 IN. AND THE DISK IS STAMPED ATHEY 1943 RESET
 JV2900'1957.
 JV2900'
 JV2900'A CHECK WAS MADE OF THE DISTANCE AND DIRECTION TO REFERENCE MARK 2
 JV2900'AND A SLIGHT DIFFERENCE WAS FOUND IN THE DISTANCE.
 JV2900'
 JV2900'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 28 AND 112
 JV2900'IN DRANESTOWN, GO E ON STATE HIGHWAY 28 FOR 0.1 MI. TO THE STATION
 JV2900'ON THE LEFT (N) SIDE OF STATE HIGHWAY 28 AS DESCRIBED.  CONTINUE E
 JV2900'ON STATE HIGHWAY 28 FOR 0.2 MI. TO FORKS.  TAKE RIGHT FORK AND GO SE
 JV2900'ON SURFACED ROAD FOR 0.1 MI. TO AZIMUTH MARK ON THE LEFT (N) SIDE
 JV2900'OF ROAD.
 JV2900
 JV2900                          STATION RECOVERY (1965)
 JV2900
 JV2900'RECOVERY NOTE BY WASH SUBURB SAN COMM 1965
 JV2900'0.2 MI E FROM DARNESTOWN.
 JV2900'0.15 MI. E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH HWY. 112
 JV2900'AT DARNESTOWN IN THE E. CORNER OF A DIARY BARN LOT, 69 FT. S.E.
 JV2900'OF THE E. CORNER OF A LARGE DIARY BARN, 56 FT. S.E. OF THE S.E.
 JV2900'EDGE OF A WOODEN GATE, 38 FT. N.W. OF THE CENTERLINE OF THE HWY,
 JV2900'20 FT. W. OF A FENCE CORNER, 12 FT. S.W. OF A FENCE, 60 FT. E.
 JV2900'OF C AND P POLE 260, 94 FT. N.W. OF POLE 611341 AND 83 FT. N.W.
 JV2900'OF POLE 611342.  THE MARK IS 12 IN. BELOW THE SURFACE OF THE
 JV2900'GROUND.
 JV2900
 JV2900                          STATION RECOVERY (1966)
 JV2900
 JV2900'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV2900'THE STATION WAS RECOVERED AND ALL MARKS WERE FOUND IN GOOD
 JV2900'CONDITION.  A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV2900'
 JV2900'THE STATION IS LOCATED 7 MILES WEST-NORTHWEST OF ROCKVILLE, 5 MILES
 JV2900'WEST-SOUTHWEST OF GAITHERSBURG AND IN THE VILLAGE OF DARNESTOWN.
 JV2900'
 JV2900'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 28 AND STATE
 JV2900'HIGHWAY 112 IN DARNESTOWN, GO EAST ON STATE HIGHWAY 28 FOR 0.15 MILE
 JV2900'TO THE STATION ON THE LEFT.
 JV2900'
 JV2900'THE STATION MARK IS A STANDARD DISK, STAMPED ATHEY 1943, SET IN THE
 JV2900'TOP OF A 12 INCH SQUARE CONCRETE MONUMENT THAT IS 10-INCHES BELOW
 JV2900'THE GROUND SURFACE.  IT IS 96.5 FEET WEST OF POWER LINE POLE NO.
 JV2900'259, 68.7 FEET SOUTH-SOUTHEAST OF THE SOUTHEAST CORNER OF A
 JV2900'CONCRETE BLOCK BUILDING, 60.3 FEET EAST-NORTHEAST OF POWER LINE POLE
 JV2900'NO. 263, 55.7 FEET SOUTH-SOUTHEAST OF A FENCE CORNER POST AND 37.5
 JV2900'FEET NORTH-NORTHWEST OF THE CENTER OF STATE HIGHWAY 28.
 JV2900'
 JV2900'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED ATHEY NO 2 1943, SET
 JV2900'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT THAT PROJECTS
 JV2900'2-INCHES.  IT IS 28 FEET NORTH OF THE CENTER OF STATE HIGHWAY 28,
 JV2900'10 FEET WEST OF THE FENCE CORNER POST AND 3.5 FEET NORTH OF POWER
 JV2900'LINE POLE NO 259.
 JV2900'
 JV2900'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED ATHEY NO 3 1943, SET
 JV2900'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT THAT IS FLUSH WITH
 JV2900'THE GROUND SURFACE.  IT IS 90.5 FEET NORTH-NORTHEAST OF POWER LINE
 JV2900'POLE NO. 263, 35.5 FEET NORTH-NORTHWEST OF A FENCE CORNER POST AND
 JV2900'3.8 FEET EAST OF THE NORTHEAST CORNER OF THE CONCRETE BLOCK
 JV2900'BUILDING.
 JV2900'
 JV2900'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED ATHEY 1943 RESET 1957
 JV2900'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT THAT IS FLUSH
 JV2900'WITH THE GROUND SURFACE.  IT IS 15.7 FEET NORTH OF THE CENTER OF A
 JV2900'PAVED ROAD, 2.6 FEET EAST-SOUTHEAST OF A FENCE CORNER POST AND
 JV2900'1.1 FEET WEST-SOUTHWEST OF A METAL WITNESS SIGN POST.
 JV2900'
 JV2900'TO REACH THE AZIMUTH MARK FROM THE STATION GO EAST ON STATE
 JV2900'HIGHWAY 28 FOR 0.2 MILE TO A FORK.  TURN RIGHT AND GO 0.1 MILE TO
 JV2900'THE MARK ON THE LEFT.
 JV2900
 JV2900                          STATION RECOVERY (1969)
 JV2900
 JV2900'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV2900'THE STATION MARK, REFERENCE MARKS 1, 2 AND THE AZIMUTH MARK WERE
 JV2900'RECOVERED AS DESCRIBED BY F.B.Q. IN 1957.
 JV2900'
 JV2900'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN DARNESTOWN.
 JV2900
 JV2900                          STATION RECOVERY (1987)
 JV2900
 JV2900'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 JV2900'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES NOTED BELOW --
 JV2900'THE STATION MARK, REFERENCE MARK TWO AND REFERENCE MARK THREE WERE
 JV2900'RECOVERED AND FOUND IN GOOD CONDITION AS DESCRIBED IN THE MOST
 JV2900'RECENT INFORMATION AVAILABLE WITH THE FOLLOWING EXCEPTIONS.  A
 JV2900'SHORTER DISTANCE OF 0.005 METER OR 0.02 FT WAS OBSERVED TO
 JV2900'REFERENCE MARK TWO.  A SHORTER DISTANCE OF 0.009 METER OR 0.04 FT
 JV2900'WAS OBSERVED TO REFERENCE MARK THREE.  THE ANGLE BETWEEN THE
 JV2900'REFERENCE MARKS WERE WITHIN CLOSE AGREEMENT WITH THE MOST RECENT
 JV2900'INFORMATION AVAILABLE.  THE AZIMUTH MARK IS NO LONGER VISIBLE FROM
 JV2900'THE GROUND A NEW AZIMUTH WAS ESTABLISHED TO A NEWLY SET MARYLAND
 JV2900'STATE HIGHWAY ADMINISTRATION MARKER NAMED ATHEY AZ MK 2, SEE
 JV2900'DESCRIPTION THEREOF. NO OTHER DIFFERENCES WERE FOUND AT THIS
 JV2900'STATION.
 JV2900
 JV2900                          STATION RECOVERY (1990)
 JV2900
 JV2900'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV2900'THE STATION IS LOCATED 11.3 KM (7.0 MI) WNW OF ROCKVILLE, 8.1 KM
 JV2900'(5.0 MI) WSW OF GAITHERSBURG IN THE VILLAGE OF DARNESTOWN. TO REACH
 JV2900'THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS RTE 28
 JV2900'(DARNESTOWN RD) AND RTE 112 (SENECA RD) GO EAST ON RTE 28 0.25 KM
 JV2900'(0.16 MI) TO THE STATION ON THE LEFT.  THE STATION IS ACROSS THE
 JV2900'STREET FROM HOUSE NO. 13912.  THE STATION IS 11.5 M (37.7 FT) N OF
 JV2900'THE ROAD. OWNERSHIP--STATE ROAD RIGHT-OF-WAY THE STATION IS A
 JV2900'STANDARD CGS  TRINGULATION DISK STAMPED ATHEY 1943 SET IN THE TOP OF
 JV2900'A 0.3 M (1.0 FT) SQUARE CONCRETE MONUMENT 0.3 M (1.0 FT) BELOW THE
 JV2900'SURFACE. IT IS 18.42 M (60.43 FT) EAST OF A REFERENCE NAIL IN THE
 JV2900'NORTH SIDE OF A TELEPHONE POLE NO 261, 28.85 M (94.65 FT) WEST OF A
 JV2900'REFERENCE NAIL IN THE SOUTH SIDE OF A TELEPHONE POLE NO 257, 25.86 M
 JV2900'(84.84 FT) NNE OF THE NW CORNER OF HOUSE NO. 13912 AND 25.94 M
 JV2900'(85.10 FT) NNW OF THE NE CORDNER HOUSE NO. 13912. ATHEY NO 2 1943 AND
 JV2900'ATEHY NO 3 1943 SERVES AS REFERENCE MARKS FOR THIS STATION. ATHEY
 JV2900'1943 RESET 1957 SERVES AS A AZIMUTH MARK FOR THIS STATION.  NOTE IT
 JV2900'CAN NOT BE SEEN FROM THE GROUND AT THIS TIME.
 JV2900
 JV2900                          STATION RECOVERY (1990)
 JV2900
 JV2900'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV2900'RECOVERED IN GOOD CONDITION.
 JV2900
 JV2900                          STATION RECOVERY (1992)
 JV2900
 JV2900'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 JV2900'RECOVERED IN GOOD CONDITION.
 JV2900
 JV2900                          STATION RECOVERY (2019)
 JV2900
 JV2900'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV2900'THE MARK IS UNDER A CAST IRON CAP LABELED 'SURVEY CONTROL POINT' FLUSH
 JV2900'WITH THE GROUND.  VICE GRIPS ARE NEEDED TO REMOVE THE CAP.
 JV2900'
 JV2900'THE MARK IS 39 FT (11.9 M) EAST OF THE EAST EDGE OF THE EAST DRIVEWAY
 JV2900'TO 13909 DARNESTOWN ROAD AND 56 FT (17.1 M) WEST OF THE WEST EDGE OF
 JV2900'THE DRIVEWAY TO 13905 DARNESTOWN ROAD.
 JV2900
 JV2900                          STATION RECOVERY (2020)
 JV2900
 JV2900'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (RA)
 JV2900'THE MARK IS UNDER A STEEL CAP LABELED SURVEY CONTROL POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6896 ***********************************************************************
 JV6896  DESIGNATION -  ATHEY AZ MK 2
 JV6896  PID         -  JV6896
 JV6896  STATE/COUNTY-  MD/MONTGOMERY
 JV6896  COUNTRY     -  US
 JV6896  USGS QUAD   -  SENECA (2016)
 JV6896
 JV6896                         *CURRENT SURVEY CONTROL
 JV6896  ______________________________________________________________________
 JV6896* NAD 83(1993) POSITION- 39 06 16.65982(N) 077 17 07.51496(W)   ADJUSTED
 JV6896* NAVD 88 ORTHO HEIGHT -   131.9   (meters)      433.    (feet) VERTCON3
 JV6896  ______________________________________________________________________
 JV6896  GEOID HEIGHT    -        -31.790 (meters)                     GEOID18
 JV6896  LAPLACE CORR    -          2.88  (seconds)                    DEFLEC18
 JV6896  HORZ ORDER      -  SECOND
 JV6896
 JV6896.The horizontal coordinates were established by classical geodetic methods
 JV6896.and adjusted by the National Geodetic Survey in November 1994.
 JV6896
 JV6896.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6896.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6896
 JV6896.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6896.GEOID18 height accuracy estimate available here.
 JV6896
 JV6896.Click photographs - Photos may exist for this station.
 JV6896
 JV6896.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6896
 JV6896. The following values were computed from the NAD 83(1993) position.
 JV6896
 JV6896;                    North         East     Units Scale Factor Converg.
 JV6896;SPC MD       -   159,659.678   375,312.558   MT  0.99995780   -0 10 44.9
 JV6896;SPC MD       -   523,816.79  1,231,337.95   sFT  0.99995780   -0 10 44.9
 JV6896;SPC VA N     - 2,160,311.326 3,605,054.799   MT  0.99998447   +0 45 28.9
 JV6896;SPC VA N     - 7,087,621.41 11,827,583.95   sFT  0.99998447   +0 45 28.9
 JV6896;UTM  18      - 4,330,874.000   302,382.365   MT  1.00008089   -1 26 31.1
 JV6896
 JV6896!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6896!SPC MD       -   0.99998429  x   0.99995780  =   0.99994209
 JV6896!SPC VA N     -   0.99998429  x   0.99998447  =   0.99996876
 JV6896!UTM  18      -   0.99998429  x   1.00008089  =   1.00006518
 JV6896
 JV6896_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0238230873(NAD 83)
 JV6896
 JV6896                          SUPERSEDED SURVEY CONTROL
 JV6896
 JV6896  NAD 83(1991)-  39 06 16.65900(N)    077 17 07.51519(W) AD(       ) 2
 JV6896  NAD 83(1986)-  39 06 16.65947(N)    077 17 07.52553(W) AD(       ) 2
 JV6896  NGVD 29 (11/20/91)  132.1    (m)          433.     (f) VERT ANG       
 JV6896
 JV6896.Superseded values are not recommended for survey control.
 JV6896
 JV6896.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6896.See file dsdata.pdf to determine how the superseded data were derived.
 JV6896
 JV6896_MARKER: DD = SURVEY DISK
 JV6896_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6896_STAMPING: ATHEY AZ MK 2 1987
 JV6896_MARK LOGO: MDSHA
 JV6896_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6896_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6896+STABILITY: SURFACE MOTION
 JV6896
 JV6896  HISTORY     - Date     Condition        Report By
 JV6896  HISTORY     - 1987     MONUMENTED       MDSHA
 JV6896
 JV6896                          STATION DESCRIPTION
 JV6896
 JV6896'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1987 (RGP)
 JV6896'THE STATION IS LOCATED ABOUT 12.9 KM (8 MI) WEST OF ROCKVILLE,
 JV6896'9.6 KM (6 MI) SOUTHWEST OF GAITHERSBURG AND IN THE NORTHEAST PART
 JV6896'OF DARNESTOWN.
 JV6896'OWNERSHIP--ROAD RIGHT OF WAY.
 JV6896'
 JV6896'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAY
 JV6896'270 AND STATE HIGHWAY 28 AT ROCKVILLE, GO WEST-NORTHWEST FOR
 JV6896'11.5 KM (7.15 MI) ON STATE HIGHWAY 28 (DARNESTOWN ROAD) TO THE MARK
 JV6896'ON THE LEFT NEAR THE JUNCTION WITH TURKEY FOOT ROAD.
 JV6896'
 JV6896'THE STATION IS A STANDARD MDSHA DISK
 JV6896'STAMPED---ATHEY AZ MK 2 1987---,
 JV6896'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 JV6896'30 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED
 JV6896'7.4 METERS (24.4 FT) SOUTHWEST FROM A TELEPHONE POLE NUMBERED 251,
 JV6896'8.4 METERS (27.5 FT) SOUTHEAST FROM THE CENTER OF STATE HIGHWAY 28,
 JV6896'17.1 METERS (56.0 FT) SOUTHEAST FROM A POWERLINE POLE NUMBERED
 JV6896'718463 8408 AND
 JV6896'77.4 METERS (254.0 FT) NORTHEAST FROM THE INTERSECTION OF STATE
 JV6896'HIGHWAY 28 AND TURKEY FOOT ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2901 ***********************************************************************
 JV2901  DESIGNATION -  ATHEY RM 2
 JV2901  PID         -  JV2901
 JV2901  STATE/COUNTY-  MD/MONTGOMERY
 JV2901  COUNTRY     -  US
 JV2901  USGS QUAD   -  SENECA (2016)
 JV2901
 JV2901                         *CURRENT SURVEY CONTROL
 JV2901  ______________________________________________________________________
 JV2901* NAD 83(1986) POSITION- 39 06 11.66   (N) 077 17 20.49   (W)   HD_HELD1
 JV2901* NAVD 88 ORTHO HEIGHT -   136.559 (meters)      448.03  (feet) ADJUSTED
 JV2901  ______________________________________________________________________
 JV2901  GEOID HEIGHT    -        -31.794 (meters)                     GEOID18
 JV2901  DYNAMIC HEIGHT  -        136.487 (meters)      447.79  (feet) COMP
 JV2901  MODELED GRAVITY -    980,102.8   (mgal)                       NAVD 88
 JV2901
 JV2901  VERT ORDER      -  SECOND    CLASS 0
 JV2901
 JV2901.The horizontal coordinates were determined by differentially corrected
 JV2901.hand held GPS observations or other comparable positioning techniques
 JV2901.and have an estimated accuracy of +/- 3 meters.
 JV2901
 JV2901.The orthometric height was determined by differential leveling and
 JV2901.adjusted by the NATIONAL GEODETIC SURVEY
 JV2901.in June 1991.
 JV2901
 JV2901.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2901.GEOID18 height accuracy estimate available here.
 JV2901
 JV2901.Click photographs - Photos may exist for this station.
 JV2901
 JV2901.The dynamic height is computed by dividing the NAVD 88
 JV2901.geopotential number by the normal gravity value computed on the
 JV2901.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2901.degrees latitude (g = 980.6199 gals.).
 JV2901
 JV2901.The modeled gravity was interpolated from observed gravity values.
 JV2901
 JV2901;                    North         East    Units  Estimated Accuracy
 JV2901;SPC MD       -   159,506.5     375,000.3     MT  (+/- 3 meters HH1 GPS) 
 JV2901
 JV2901_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0206630727(NAD 83)
 JV2901
 JV2901                          SUPERSEDED SURVEY CONTROL
 JV2901
 JV2901  NGVD 29 (11/26/84)  136.780  (m)          448.75   (f) ADJUSTED    2 0
 JV2901
 JV2901.Superseded values are not recommended for survey control.
 JV2901
 JV2901.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2901.See file dsdata.pdf to determine how the superseded data were derived.
 JV2901
 JV2901_MARKER: DR = REFERENCE MARK DISK
 JV2901_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2901_STAMPING: ATHEY NO 2 1943
 JV2901_MARK LOGO: CGS
 JV2901_PROJECTION: FLUSH
 JV2901_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV2901_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2901+STABILITY: SURFACE MOTION
 JV2901_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2901+SATELLITE: SATELLITE OBSERVATIONS - November 07, 2022
 JV2901
 JV2901  HISTORY     - Date     Condition        Report By
 JV2901  HISTORY     - 1943     MONUMENTED       CGS
 JV2901  HISTORY     - 1965     GOOD             WSSC
 JV2901  HISTORY     - 19900222 GOOD             WSSC
 JV2901  HISTORY     - 20221107 GOOD             NGS
 JV2901
 JV2901                          STATION DESCRIPTION
 JV2901
 JV2901'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2901'0.2 MI E FROM DARNESTOWN.
 JV2901'0.5 MI.E. ALONG STATE HWY. 28 FROM ITS JUNCTION WITH STATE HWY.
 JV2901'112 0.03 MI. E.N.E. OF ATHEY TRIANGULATION, 10 FT. W. OPF A FENCE
 JV2901'CORNER, 3 1/2 FT. N. OF A POWER POLE, AND 27 1/2 FT. N. OF THE
 JV2901'CENTERLINE OF THE HWY THE MARK PROJECTS 2 IN. ABOVE THE SURFACE
 JV2901'OF THE GROUND.
 JV2901
 JV2901                          STATION RECOVERY (1990)
 JV2901
 JV2901'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV2901'THE STATION IS LOCATED 11.3 KM (7.0 MI) WNW OF ROCKVILLE, 8.1 KM
 JV2901'(5.0 MI) WSW OF GAITHERSBURG IN THE VILLAGE OF DARNESTOWN. TO REACH
 JV2901'THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS RTE 28
 JV2901'(DARNESTOWN RD) AND RTE 112 (SENECA RD) GO EAST ON RTE 28 0.25 KM
 JV2901'(0.16 MI) TO STATION ON THE LEFT.  THE STATION IS ACROSS THE STREET
 JV2901'FROM HOUSE NO. 13912.  THE STATION IS 8.5 M (27.9 FT) NORTH OF THE
 JV2901'CENTERLINE OF THE ROAD. OWNERSHIP--STATE ROAD RIGHT-OF-WAY. THE
 JV2901'STATION IS A STANDARD CGS REFERENCE MARK DESK STAMPED ATHEY NO 2 1943
 JV2901'SET IN THE TOP OF A 0.3 M (1.0 FT) SQUARE CONCRETE MONUMENT 0.1 M
 JV2901'(0.3 FT) OBOVE THE SURFACE. IT IS 1.0 M (3.3 FT) NORTH OF A TELEPHONE
 JV2901'POLE NO 259.
 JV2901
 JV2901                          STATION RECOVERY (2022)
 JV2901
 JV2901'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (KA)
 JV2901'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4710 ***********************************************************************
 AB4710  DESIGNATION -  ATKINS
 AB4710  PID         -  AB4710
 AB4710  STATE/COUNTY-  MD/CARROLL
 AB4710  COUNTRY     -  US
 AB4710  USGS QUAD   -  WINFIELD (2016)
 AB4710
 AB4710                         *CURRENT SURVEY CONTROL
 AB4710  ______________________________________________________________________
 AB4710* NAD 83(2011) POSITION- 39 22 51.53148(N) 077 06 55.21126(W)   ADJUSTED
 AB4710* NAD 83(2011) ELLIP HT-   198.044 (meters)        (06/27/12)   ADJUSTED
 AB4710* NAD 83(2011) EPOCH   -  2010.00
 AB4710* NAVD 88 ORTHO HEIGHT -   229.9   (meters)      754.    (feet) GPS OBS
 AB4710  ______________________________________________________________________
 AB4710  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4710  GEOID HEIGHT    -        -31.920 (meters)                     GEOID99
 AB4710  GEOID HEIGHT    -        -31.920 (meters)                     GEOID18
 AB4710  NAD 83(2011) X  -  1,100,842.671 (meters)                     COMP
 AB4710  NAD 83(2011) Y  - -4,812,450.559 (meters)                     COMP
 AB4710  NAD 83(2011) Z  -  4,025,224.236 (meters)                     COMP
 AB4710  LAPLACE CORR    -          1.36  (seconds)                    DEFLEC18
 AB4710
 AB4710  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4710  Standards:
 AB4710         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4710            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4710  -------------------------------------------------------------------
 AB4710  NETWORK    2.52   6.33           1.03   1.03   3.23     -0.10682964
 AB4710  -------------------------------------------------------------------
 AB4710  Click here for local accuracies and other accuracy information.
 AB4710
 AB4710.The horizontal coordinates were established by GPS observations
 AB4710.and adjusted by the National Geodetic Survey in June 2012.
 AB4710
 AB4710.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4710.been affixed to the stable North American tectonic plate. See 
 AB4710.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4710
 AB4710.The horizontal coordinates are valid at the epoch date displayed above
 AB4710.which is a decimal equivalence of Year/Month/Day.
 AB4710
 AB4710.The orthometric height was determined by GPS observations and a
 AB4710.high-resolution geoid model.
 AB4710
 AB4710.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4710.GEOID18 height accuracy estimate available here.
 AB4710
 AB4710.Click photographs - Photos may exist for this station.
 AB4710
 AB4710.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4710
 AB4710.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4710
 AB4710.The ellipsoidal height was determined by GPS observations
 AB4710.and is referenced to NAD 83.
 AB4710
 AB4710. The following values were computed from the NAD 83(2011) position.
 AB4710
 AB4710;                    North         East     Units Scale Factor Converg.
 AB4710;SPC MD       -   190,307.250   390,062.734   MT  0.99998865   -0 04 20.6
 AB4710;SPC MD       -   624,366.37  1,279,730.82   sFT  0.99998865   -0 04 20.6
 AB4710;UTM  18      - 4,361,190.258   317,807.501   MT  1.00000871   -1 20 33.0
 AB4710
 AB4710!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4710!SPC MD       -   0.99996893  x   0.99998865  =   0.99995758
 AB4710!UTM  18      -   0.99996893  x   1.00000871  =   0.99997764
 AB4710
 AB4710:                Primary Azimuth Mark                     Grid Az
 AB4710:SPC MD       -  ATKINS AZ MK                             076 42 55.2
 AB4710:UTM  18      -  ATKINS AZ MK                             077 59 07.6
 AB4710
 AB4710_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1780761190(NAD 83)
 AB4710
 AB4710|---------------------------------------------------------------------|
 AB4710| PID    Reference Object                     Distance      Geod. Az  |
 AB4710|                                                           dddmmss.s |
 AB4710| AB4617 ATKINS AZ MK                        464.848 METERS 0763834.6 |
 AB4710|---------------------------------------------------------------------|
 AB4710
 AB4710                          SUPERSEDED SURVEY CONTROL
 AB4710
 AB4710  NAD 83(2007)-  39 22 51.53186(N)    077 06 55.21303(W) AD(2002.00) 0
 AB4710  ELLIP H (02/10/07)  198.048  (m)                       GP(2002.00)    
 AB4710  ELLIP H (08/30/02)  198.039  (m)                       GP(       ) 4 2
 AB4710  NAD 83(1991)-  39 22 51.53222(N)    077 06 55.21245(W) AD(       ) 1
 AB4710  ELLIP H (07/03/96)  197.961  (m)                       GP(       ) 1 1
 AB4710  NAVD 88 (07/03/96)  229.9    (m)  GEOID93  model used  GPS OBS        
 AB4710
 AB4710.Superseded values are not recommended for survey control.
 AB4710
 AB4710.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4710.See file dsdata.pdf to determine how the superseded data were derived.
 AB4710
 AB4710_MARKER: DD = SURVEY DISK
 AB4710_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4710_STAMPING: ATKINS 1995
 AB4710_MARK LOGO: MD-013
 AB4710_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4710_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4710+STABILITY: SURFACE MOTION
 AB4710_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4710+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4710
 AB4710  HISTORY     - Date     Condition        Report By
 AB4710  HISTORY     - 1995     MONUMENTED       MD-013
 AB4710
 AB4710                          STATION DESCRIPTION
 AB4710
 AB4710'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4710'STATION IS LOCATED ABOUT 2.0 MI (3.2 KM) NORTHEAST OF MOUNT AIRY AND
 AB4710'ABOUT 8.0 MI (12.9 KM) WEST OF SYKESVILLE. TO REACH STATION FROM THE
 AB4710'ROUTE I-70 OVERPASS BRIDGE OVER MD ROUTE 27 (RIDGE ROAD) AT MOUNT
 AB4710'AIRY, GO NORTH ON MD ROUTE 27 FOR 2.0 MI (3.2 KM) TO THE INTERSECTION
 AB4710'WITH WATERSVILLE ROAD. TURN RIGHT ON WATERSVILLE ROAD AND GO EAST FOR
 AB4710'1.7 MI (2.7 KM) TO THE INTERSECTION WITH HAMPTON CIRCLE ON THE RIGHT
 AB4710'AND THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4710'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 14.5 FT
 AB4710'(4.4 M) NORTH OF THE CENTERLINE OF WATERSVILLE ROAD, 96.0 FT (29.3 M)
 AB4710'NORTHWEST OF POWER POLE NO.F60982 AND 88.0 FT (26.8 M) FROM THE
 AB4710'INTERSECTION OF WATERSVILLE ROAD WITH HAMPTON CIRCLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4617 ***********************************************************************
 AB4617  DESIGNATION -  ATKINS AZ MK
 AB4617  PID         -  AB4617
 AB4617  STATE/COUNTY-  MD/CARROLL
 AB4617  COUNTRY     -  US
 AB4617  USGS QUAD   -  WINFIELD (2016)
 AB4617
 AB4617                         *CURRENT SURVEY CONTROL
 AB4617  ______________________________________________________________________
 AB4617* NAD 83(2011) POSITION- 39 22 55.01321(N) 077 06 36.31377(W)   ADJUSTED
 AB4617* NAD 83(2011) ELLIP HT-   194.577 (meters)        (06/27/12)   ADJUSTED
 AB4617* NAD 83(2011) EPOCH   -  2010.00
 AB4617* NAVD 88 ORTHO HEIGHT -   226.4   (meters)      743.    (feet) GPS OBS
 AB4617  ______________________________________________________________________
 AB4617  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4617  GEOID HEIGHT    -        -31.917 (meters)                     GEOID99
 AB4617  GEOID HEIGHT    -        -31.918 (meters)                     GEOID18
 AB4617  NAD 83(2011) X  -  1,101,267.775 (meters)                     COMP
 AB4617  NAD 83(2011) Y  - -4,812,280.657 (meters)                     COMP
 AB4617  NAD 83(2011) Z  -  4,025,305.034 (meters)                     COMP
 AB4617  LAPLACE CORR    -          1.20  (seconds)                    DEFLEC18
 AB4617
 AB4617  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4617  Standards:
 AB4617         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4617            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4617  -------------------------------------------------------------------
 AB4617  NETWORK    2.22   5.53           0.93   0.88   2.82     -0.00068122
 AB4617  -------------------------------------------------------------------
 AB4617  Click here for local accuracies and other accuracy information.
 AB4617
 AB4617.The horizontal coordinates were established by GPS observations
 AB4617.and adjusted by the National Geodetic Survey in June 2012.
 AB4617
 AB4617.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4617.been affixed to the stable North American tectonic plate. See 
 AB4617.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4617
 AB4617.The horizontal coordinates are valid at the epoch date displayed above
 AB4617.which is a decimal equivalence of Year/Month/Day.
 AB4617
 AB4617.The orthometric height was determined by GPS observations and a
 AB4617.high-resolution geoid model.
 AB4617
 AB4617.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4617.GEOID18 height accuracy estimate available here.
 AB4617
 AB4617.Click photographs - Photos may exist for this station.
 AB4617
 AB4617.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4617
 AB4617.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4617
 AB4617.The ellipsoidal height was determined by GPS observations
 AB4617.and is referenced to NAD 83.
 AB4617
 AB4617. The following values were computed from the NAD 83(2011) position.
 AB4617
 AB4617;                    North         East     Units Scale Factor Converg.
 AB4617;SPC MD       -   190,414.066   390,515.137   MT  0.99998880   -0 04 08.7
 AB4617;SPC MD       -   624,716.81  1,281,215.08   sFT  0.99998880   -0 04 08.7
 AB4617;UTM  18      - 4,361,287.021   318,262.169   MT  1.00000668   -1 20 21.1
 AB4617
 AB4617!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4617!SPC MD       -   0.99996947  x   0.99998880  =   0.99995827
 AB4617!UTM  18      -   0.99996947  x   1.00000668  =   0.99997615
 AB4617
 AB4617:                Primary Azimuth Mark                     Grid Az
 AB4617:SPC MD       -  ATKINS                                   256 42 55.3
 AB4617:UTM  18      -  ATKINS                                   257 59 07.7
 AB4617
 AB4617_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1826261287(NAD 83)
 AB4617
 AB4617|---------------------------------------------------------------------|
 AB4617| PID    Reference Object                     Distance      Geod. Az  |
 AB4617|                                                           dddmmss.s |
 AB4617| AB4710 ATKINS                              464.848 METERS 2563846.6 |
 AB4617|---------------------------------------------------------------------|
 AB4617
 AB4617                          SUPERSEDED SURVEY CONTROL
 AB4617
 AB4617  NAD 83(2007)-  39 22 55.01353(N)    077 06 36.31543(W) AD(2002.00) 0
 AB4617  ELLIP H (02/10/07)  194.586  (m)                       GP(2002.00)    
 AB4617  ELLIP H (08/30/02)  194.562  (m)                       GP(       ) 4 2
 AB4617  NAD 83(1991)-  39 22 55.01389(N)    077 06 36.31550(W) AD(       ) 1
 AB4617  ELLIP H (07/03/96)  194.494  (m)                       GP(       ) 1 1
 AB4617  NAVD 88 (07/03/96)  226.5    (m)  GEOID93  model used  GPS OBS        
 AB4617
 AB4617.Superseded values are not recommended for survey control.
 AB4617
 AB4617.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4617.See file dsdata.pdf to determine how the superseded data were derived.
 AB4617
 AB4617_MARKER: DD = SURVEY DISK
 AB4617_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4617_STAMPING: ATKINS AZI 1995
 AB4617_MARK LOGO: MD-013
 AB4617_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB4617_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4617+STABILITY: SURFACE MOTION
 AB4617_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4617+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4617
 AB4617  HISTORY     - Date     Condition        Report By
 AB4617  HISTORY     - 1995     MONUMENTED       MD-013
 AB4617
 AB4617                          STATION DESCRIPTION
 AB4617
 AB4617'DESCRIBED BY CARROLL COUNTY MARYLAND 1995 (MTD)
 AB4617'STATION IS LOCATED ABOUT 15 MI (24.1 KM) SOUTHWEST OF WESTMINSTER AND
 AB4617'ABOUT 1 MI (1.6 KM) NORTHEAST OF MOUNT AIRY. TO REACH STATION FROM THE
 AB4617'I-70 OVERPASS OVER ROUTE 27 IN MOUNT AIRY. GO NORTH ON ROUTE 27 FOR
 AB4617'2.1 MI (3.4 KM) TO THE INTERSECTION WITH WATERSVILLE ROAD. TURN RIGHT
 AB4617'ON WATERSVILLE ROAD AND GO EAST FOR 2.0 MI (3.2 KM) TO A T
 AB4617'INTERSECTION. TURN LEFT AT INTERSECTION AND PROCEED ON WATERSVILLE
 AB4617'ROAD FOR 0.1 MI (0.2 KM) TO STATION ON THE RIGHT. STATION MARK IS SET
 AB4617'IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4617'GROUND. IT IS 14 FT (4.3 M) EAST OF THE CENTERLINE OF WATERSVILLE
 AB4617'ROAD, 10 FT (3.0 M) SOUTH OF UTILITY POLE NO. F48528 AND 58 FT (17.7
 AB4617'M) SOUTH OF A STONE DRIVEWAY LEADING TO HOUSE NO. 7017.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6714 ***********************************************************************
 JV6714  DESIGNATION -  ATKISSON
 JV6714  PID         -  JV6714
 JV6714  STATE/COUNTY-  MD/HARFORD
 JV6714  COUNTRY     -  US
 JV6714  USGS QUAD   -  EDGEWOOD (2016)
 JV6714
 JV6714                         *CURRENT SURVEY CONTROL
 JV6714  ______________________________________________________________________
 JV6714* NAD 83(2011) POSITION- 39 28 49.75560(N) 076 20 51.94955(W)   ADJUSTED
 JV6714* NAD 83(2011) ELLIP HT-    32.407 (meters)        (06/27/12)   ADJUSTED
 JV6714* NAD 83(2011) EPOCH   -  2010.00
 JV6714* NAVD 88 ORTHO HEIGHT -    65.3   (meters)      214.    (feet) GPS OBS
 JV6714  ______________________________________________________________________
 JV6714  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6714  GEOID HEIGHT    -        -33.210 (meters)                     GEOID93
 JV6714  GEOID HEIGHT    -        -32.925 (meters)                     GEOID18
 JV6714  NAD 83(2011) X  -  1,163,526.379 (meters)                     COMP
 JV6714  NAD 83(2011) Y  - -4,790,328.510 (meters)                     COMP
 JV6714  NAD 83(2011) Z  -  4,033,652.278 (meters)                     COMP
 JV6714  LAPLACE CORR    -         -4.29  (seconds)                    DEFLEC18
 JV6714
 JV6714  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6714  Standards:
 JV6714         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6714            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6714  -------------------------------------------------------------------
 JV6714  NETWORK    1.43   3.51           0.62   0.51   1.79      0.42442731
 JV6714  -------------------------------------------------------------------
 JV6714  Click here for local accuracies and other accuracy information.
 JV6714
 JV6714.The horizontal coordinates were established by GPS observations
 JV6714.and adjusted by the National Geodetic Survey in June 2012.
 JV6714
 JV6714.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6714.been affixed to the stable North American tectonic plate. See 
 JV6714.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6714
 JV6714.The horizontal coordinates are valid at the epoch date displayed above
 JV6714.which is a decimal equivalence of Year/Month/Day.
 JV6714
 JV6714.The orthometric height was determined by GPS observations and a
 JV6714.high-resolution geoid model.
 JV6714
 JV6714.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6714.GEOID18 height accuracy estimate available here.
 JV6714
 JV6714.Click photographs - Photos may exist for this station.
 JV6714
 JV6714.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6714
 JV6714.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6714
 JV6714.The ellipsoidal height was determined by GPS observations
 JV6714.and is referenced to NAD 83.
 JV6714
 JV6714. The following values were computed from the NAD 83(2011) position.
 JV6714
 JV6714;                    North         East     Units Scale Factor Converg.
 JV6714;SPC MD       -   201,549.012   456,116.582   MT  1.00000548   +0 24 33.7
 JV6714;SPC MD       -   661,248.72  1,496,442.49   sFT  1.00000548   +0 24 33.7
 JV6714;UTM  18      - 4,370,965.926   384,086.135   MT  0.99976543   -0 51 25.3
 JV6714
 JV6714!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6714!SPC MD       -   0.99999492  x   1.00000548  =   1.00000040
 JV6714!UTM  18      -   0.99999492  x   0.99976543  =   0.99976035
 JV6714
 JV6714_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8408670965(NAD 83)
 JV6714
 JV6714|---------------------------------------------------------------------|
 JV6714| PID    Reference Object                     Distance      Geod. Az  |
 JV6714|                                                           dddmmss.s |
 JV6714| JV6715 ATKISSON AZ MK                      206.637 METERS 22123     |
 JV6714|---------------------------------------------------------------------|
 JV6714
 JV6714                          SUPERSEDED SURVEY CONTROL
 JV6714
 JV6714  NAD 83(2007)-  39 28 49.75570(N)    076 20 51.95038(W) AD(2002.00) 0
 JV6714  ELLIP H (02/10/07)   32.431  (m)                       GP(2002.00)    
 JV6714  ELLIP H (09/18/02)   32.435  (m)                       GP(       ) 4 2
 JV6714  NAD 83(1991)-  39 28 49.75536(N)    076 20 51.95023(W) AD(       ) 1
 JV6714  ELLIP H (01/27/92)   32.387  (m)                       GP(       ) 4 1
 JV6714  NAD 83(1986)-  39 28 49.74984(N)    076 20 51.95762(W) AD(       ) 1
 JV6714  NGVD 29 (06/18/91)   65.6    (m)  UNKNOWN  model used  GPS OBS        
 JV6714
 JV6714.Superseded values are not recommended for survey control.
 JV6714
 JV6714.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6714.See file dsdata.pdf to determine how the superseded data were derived.
 JV6714
 JV6714_MARKER: DD = SURVEY DISK
 JV6714_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6714_STAMPING: 15 ATKISSON 1989
 JV6714_MARK LOGO: MD-025
 JV6714_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6714_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6714+STABILITY: SURFACE MOTION
 JV6714_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6714+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2002
 JV6714
 JV6714  HISTORY     - Date     Condition        Report By
 JV6714  HISTORY     - 1989     MONUMENTED       RDA
 JV6714  HISTORY     - 19931209 GOOD             GEOMET
 JV6714  HISTORY     - 20020217 GOOD             USPSQD
 JV6714
 JV6714                          STATION DESCRIPTION
 JV6714
 JV6714'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6714'THE STATION IS LOCATED IN SOUTHWESTERN HARFORD COUNTY, MARYLAND IN THE
 JV6714'VILLAGE OF MOUNTAIN VIEW NEAR THE ATKISSON RESERVOIR.
 JV6714'TO REACH THE STATION FROM THE FROM THE INTERSECTION OF U.S. HIGHWAY 95
 JV6714'AND STATE HIGHWAY 24 PROCEED NORTH ALONG HIGHWAY 24 1.6 MILES TO ITS
 JV6714'INTERSECTION WITH SINGER ROAD.  TURN LEFT AND PROCEED WEST ALONG
 JV6714'SINGER ROAD 1.15 MILES TO ITS INTERSECTION WITH ATKISSON ROAD.  TURN
 JV6714'RIGHT AND PROCEED NORTH ALONG ATKISSON ROAD 0.6 MILES TO ITS
 JV6714'INTERSECTION WITH STOCKTON ROAD AND THE STATION ON THE LEFT.
 JV6714'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6714'ABOUT 1 INCH BELOW GROUND STAMPED 15 ATKISSON 1989.  THE STATION IS
 JV6714'55.0 FEET WEST OF THE CENTERLINE OF ATKISSON ROAD, 21.1 FEET SOUTH OF
 JV6714'THE CENTERLINE OF STOCKTON ROAD, AND 12.6 FEET EAST OF G AND E POLE
 JV6714'NUMBER 113853.
 JV6714
 JV6714                          STATION RECOVERY (1993)
 JV6714
 JV6714'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6714'RECOVERED IN GOOD CONDITION.
 JV6714
 JV6714                          STATION RECOVERY (2002)
 JV6714
 JV6714'RECOVERY NOTE BY US POWER SQUADRON 2002 (RG)
 JV6714'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6715 ***********************************************************************
 JV6715  DESIGNATION -  ATKISSON AZ MK
 JV6715  PID         -  JV6715
 JV6715  STATE/COUNTY-  MD/HARFORD
 JV6715  COUNTRY     -  US
 JV6715  USGS QUAD   -  EDGEWOOD (2016)
 JV6715
 JV6715                         *CURRENT SURVEY CONTROL
 JV6715  ______________________________________________________________________
 JV6715* NAD 83(2011) POSITION- 39 28 44.72809(N) 076 20 57.66502(W)   ADJUSTED
 JV6715* NAD 83(2011) ELLIP HT-    37.810 (meters)        (06/27/12)   ADJUSTED
 JV6715* NAD 83(2011) EPOCH   -  2010.00
 JV6715* NAVD 88 ORTHO HEIGHT -    70.7   (meters)      232.    (feet) VERTCON3
 JV6715  ______________________________________________________________________
 JV6715  GEOID HEIGHT    -        -32.925 (meters)                     GEOID18
 JV6715  NAD 83(2011) X  -  1,163,417.891 (meters)                     COMP
 JV6715  NAD 83(2011) Y  - -4,790,460.599 (meters)                     COMP
 JV6715  NAD 83(2011) Z  -  4,033,536.038 (meters)                     COMP
 JV6715  LAPLACE CORR    -         -4.39  (seconds)                    DEFLEC18
 JV6715
 JV6715  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6715  Standards:
 JV6715         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6715            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6715  -------------------------------------------------------------------
 JV6715  NETWORK    1.56   3.88           0.65   0.62   1.98      0.23355691
 JV6715  -------------------------------------------------------------------
 JV6715  Click here for local accuracies and other accuracy information.
 JV6715
 JV6715.The horizontal coordinates were established by GPS observations
 JV6715.and adjusted by the National Geodetic Survey in June 2012.
 JV6715
 JV6715.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6715.been affixed to the stable North American tectonic plate. See 
 JV6715.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6715
 JV6715.The horizontal coordinates are valid at the epoch date displayed above
 JV6715.which is a decimal equivalence of Year/Month/Day.
 JV6715
 JV6715.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6715.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6715
 JV6715.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6715.GEOID18 height accuracy estimate available here.
 JV6715
 JV6715.Click photographs - Photos may exist for this station.
 JV6715
 JV6715.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6715
 JV6715.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6715
 JV6715.The ellipsoidal height was determined by GPS observations
 JV6715.and is referenced to NAD 83.
 JV6715
 JV6715. The following values were computed from the NAD 83(2011) position.
 JV6715
 JV6715;                    North         East     Units Scale Factor Converg.
 JV6715;SPC MD       -   201,392.991   455,981.094   MT  1.00000522   +0 24 30.1
 JV6715;SPC MD       -   660,736.84  1,495,997.97   sFT  1.00000522   +0 24 30.1
 JV6715;UTM  18      - 4,370,812.974   383,947.265   MT  0.99976582   -0 51 28.8
 JV6715
 JV6715!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6715!SPC MD       -   0.99999407  x   1.00000522  =   0.99999929
 JV6715!UTM  18      -   0.99999407  x   0.99976582  =   0.99975989
 JV6715
 JV6715_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8394770812(NAD 83)
 JV6715
 JV6715|---------------------------------------------------------------------|
 JV6715| PID    Reference Object                     Distance      Geod. Az  |
 JV6715|                                                           dddmmss.s |
 JV6715| JV6714 ATKISSON                            206.637 METERS 04123     |
 JV6715|---------------------------------------------------------------------|
 JV6715
 JV6715                          SUPERSEDED SURVEY CONTROL
 JV6715
 JV6715  NAD 83(2007)-  39 28 44.72818(N)    076 20 57.66584(W) AD(2002.00) 0
 JV6715  ELLIP H (02/10/07)   37.834  (m)                       GP(2002.00)    
 JV6715  ELLIP H (09/18/02)   37.838  (m)                       GP(       ) 4 2
 JV6715  NAD 83(1991)-  39 28 44.72785(N)    076 20 57.66572(W) AD(       ) 1
 JV6715  ELLIP H (01/27/92)   37.790  (m)                       GP(       ) 4 1
 JV6715  NAD 83(1986)-  39 28 44.72230(N)    076 20 57.67303(W) AD(       ) 1
 JV6715  NGVD 29 (06/18/91)   71.0    (m)  UNKNOWN  model used  GPS OBS        
 JV6715
 JV6715.Superseded values are not recommended for survey control.
 JV6715
 JV6715.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6715.See file dsdata.pdf to determine how the superseded data were derived.
 JV6715
 JV6715_MARKER: DZ = AZIMUTH MARK DISK
 JV6715_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6715_STAMPING: 15 ATKISSON 1989
 JV6715_MARK LOGO: MD-025
 JV6715_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6715_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6715+STABILITY: SURFACE MOTION
 JV6715_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6715+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2002
 JV6715
 JV6715  HISTORY     - Date     Condition        Report By
 JV6715  HISTORY     - 1989     MONUMENTED       RDA
 JV6715  HISTORY     - 20020217 GOOD             USPSQD
 JV6715
 JV6715                          STATION DESCRIPTION
 JV6715
 JV6715'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6715'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED WEST ALONG STOCKTON
 JV6715'ROAD 0.15 MILE AND THE MARK ON THE LEFT.
 JV6715'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6715'ABOUT 1 INCH BELOW GROUND STAMPED 15 ATKISSON 1989.  THE MARK IS 18
 JV6715'FEET SOUTH OF THE CENTERLINE OF STOCKTON ROAD, 22.3 FEET SOUTHWEST OF
 JV6715'MAIL BOX POST ADDRESS 1311, 12.1 FEET NORTHWEST OF G AND E POWER POLE
 JV6715'NUMBER 113856 0ND 677.95 FEET FROM THE STATION.
 JV6715
 JV6715                          STATION RECOVERY (2002)
 JV6715
 JV6715'RECOVERY NOTE BY US POWER SQUADRON 2002 (RG)
 JV6715'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2049 ***********************************************************************
 HU2049  DESIGNATION -  ATLANTA AZIMUTH MARK
 HU2049  PID         -  HU2049
 HU2049  STATE/COUNTY-  MD/CAROLINE
 HU2049  COUNTRY     -  US
 HU2049  USGS QUAD   -  SEAFORD WEST (2016)
 HU2049
 HU2049                         *CURRENT SURVEY CONTROL
 HU2049  ______________________________________________________________________
 HU2049* NAD 83(1991) POSITION- 38 41 50.49149(N) 075 42 47.81772(W)   ADJUSTED
 HU2049* NAVD 88 ORTHO HEIGHT -    15.1   (meters)       50.    (feet) VERTCON3
 HU2049  ______________________________________________________________________
 HU2049  GEOID HEIGHT    -        -35.413 (meters)                     GEOID18
 HU2049  LAPLACE CORR    -         -2.63  (seconds)                    DEFLEC18
 HU2049  HORZ ORDER      -  SECOND
 HU2049
 HU2049.The horizontal coordinates were established by classical geodetic methods
 HU2049.and adjusted by the National Geodetic Survey in January 1992.
 HU2049
 HU2049.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2049.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2049
 HU2049.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2049.GEOID18 height accuracy estimate available here.
 HU2049
 HU2049.Click photographs - Photos may exist for this station.
 HU2049
 HU2049.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2049
 HU2049. The following values were computed from the NAD 83(1991) position.
 HU2049
 HU2049;                    North         East     Units Scale Factor Converg.
 HU2049;SPC MD       -   115,199.690   511,928.186   MT  0.99995467   +0 48 27.3
 HU2049;SPC MD       -   377,950.98  1,679,551.06   sFT  0.99995467   +0 48 27.3
 HU2049;UTM  18      - 4,283,434.425   437,972.996   MT  0.99964738   -0 26 45.5
 HU2049
 HU2049!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2049!SPC MD       -   1.00000319  x   0.99995467  =   0.99995786
 HU2049!UTM  18      -   1.00000319  x   0.99964738  =   0.99965057
 HU2049
 HU2049:                Primary Azimuth Mark                     Grid Az
 HU2049:SPC MD       -  ATLANTA                                  001 28 55.8
 HU2049:UTM  18      -  ATLANTA                                  002 44 08.6
 HU2049
 HU2049_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3797283434(NAD 83)
 HU2049
 HU2049|---------------------------------------------------------------------|
 HU2049| PID    Reference Object                     Distance      Geod. Az  |
 HU2049|                                                           dddmmss.s |
 HU2049| HU2041 ATLANTA                             APPROX. 0.9 KM 0021723.1 |
 HU2049| HU2051 TANYARD RM 3                        APPROX. 0.5 KM 1801347.1 |
 HU2049|---------------------------------------------------------------------|
 HU2049
 HU2049                          SUPERSEDED SURVEY CONTROL
 HU2049
 HU2049  NAD 83(1986)-  38 41 50.48552(N)    075 42 47.83511(W) AD(       ) 2
 HU2049  NAD 27      -  38 41 50.07780(N)    075 42 49.07750(W) AD(       ) 2
 HU2049  NGVD 29 (07/19/86)   15.3    (m)           50.     (f) VERT ANG       
 HU2049
 HU2049.Superseded values are not recommended for survey control.
 HU2049
 HU2049.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2049.See file dsdata.pdf to determine how the superseded data were derived.
 HU2049
 HU2049_MARKER: DZ = AZIMUTH MARK DISK
 HU2049_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2049_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2049+STABILITY: SURFACE MOTION
 HU2049
 HU2049  HISTORY     - Date     Condition        Report By
 HU2049  HISTORY     - 1962     MONUMENTED       CGS
 HU2049
 HU2049                          STATION DESCRIPTION
 HU2049
 HU2049'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU2049'THE STATION IS LOCATED ALONG THE SOUTH SIDE OF A DRIVEWAY,
 HU2049'BETWEEN TWO CULTIVATED FIELDS, ABOUT 6.5 MILES WEST-SOUTHWEST
 HU2049'OF BRIDGEVILLE AND 3.5 MILES EAST-NORTHEAST OF FEDERALSBURG,
 HU2049'MARYLAND AND IS ON PROPERTY OWNED BY WILLIAM HASSET.
 HU2049'
 HU2049'TO REACH THE STATION FROM THE INTERSECTION OF MAIN STREET
 HU2049'AND CENTRAL AVENUE IN FEDERALSBURG.  GO EAST ON STATE HIGHWAY
 HU2049'318 FOR 0.35 MILE TO THE JUNCTION OF STATE HIGHWAYS 306 AND
 HU2049'318.  TAKE THE RIGHT HAND FORK AND GO EAST-NORTHEAST ON STATE
 HU2049'HIGHWAY 318 FOR 2.75 MILE TO A PAVED SIDE ROAD ON THE RIGHT
 HU2049'AND A CHURCH BUILDING ON THE LEFT HAND SIDE OF THE
 HU2049'HIGHWAY.  TURN RIGHT AND GO SOUTH-SOUTHEAST ON A BLACKTOP ROAD
 HU2049'FOR 0.5 MILE TO A FARM-LANE ON THE LEFT HAND SIDE OF THE
 HU2049'ROAD.  TURN LEFT AND GO EAST ON THE DRIVEWAY FOR 0.2 MILE TO
 HU2049'A TELEPHONE POLE, A STANDARD METAL WITNESS POST AND MARKER
 HU2049'AND THE MARK.
 HU2049'
 HU2049'THE AZIMUTH MARK, A STANDARD DISK STAMPED ATLANTA 1962, IS
 HU2049'SET IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT FLUSH WITH
 HU2049'THE SURFACE OF THE GROUND.  IT IS 120.0 FEET NORTH-NORTHWEST
 HU2049'OF THE NORTHWEST CORNER OF A FARM HOUSE, 6.6 FEET SOUTH OF THE
 HU2049'CENTERLINE OF A DRIVEWAY AND 3.7 FEET EAST OF A STANDARD
 HU2049'METAL WITNESS POST AND MARKER AND A TELEPHONE POLE.
 HU2049'
 HU2049'NO REFERENCE MARKS AT THIS STATION.
 HU2049'
 HU2049'HEIGHT OF LIGHT ABOVE STATION MARK 2 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5472 ***********************************************************************
 JV5472  DESIGNATION -  ATLANTIC USE 1915
 JV5472  PID         -  JV5472
 JV5472  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5472  COUNTRY     -  US
 JV5472  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5472
 JV5472                         *CURRENT SURVEY CONTROL
 JV5472  ______________________________________________________________________
 JV5472* NAD 83(1991) POSITION- 39 16 40.21041(N) 076 34 49.05636(W)   ADJUSTED
 JV5472* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5472  ______________________________________________________________________
 JV5472  GEOID HEIGHT    -        -32.828 (meters)                     GEOID18
 JV5472  LAPLACE CORR    -         -4.46  (seconds)                    DEFLEC18
 JV5472  HORZ ORDER      -  THIRD
 JV5472
 JV5472.The horizontal coordinates were established by classical geodetic methods
 JV5472.and adjusted by the National Geodetic Survey in January 1992.
 JV5472
 JV5472.The orthometric height was scaled from a topographic map.
 JV5472
 JV5472.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5472.GEOID18 height accuracy estimate available here.
 JV5472
 JV5472.Click photographs - Photos may exist for this station.
 JV5472
 JV5472.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5472
 JV5472. The following values were computed from the NAD 83(1991) position.
 JV5472
 JV5472;                    North         East     Units Scale Factor Converg.
 JV5472;SPC MD       -   178,933.123   436,213.998   MT  0.99997441   +0 15 48.3
 JV5472;SPC MD       -   587,049.75  1,431,145.43   sFT  0.99997441   +0 15 48.3
 JV5472;UTM  18      - 4,348,799.316   363,692.927   MT  0.99982877   -1 00 02.2
 JV5472
 JV5472!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5472!SPC MD       -   1.00000503  x   0.99997441  =   0.99997944
 JV5472!UTM  18      -   1.00000503  x   0.99982877  =   0.99983380
 JV5472
 JV5472:                Primary Azimuth Mark                     Grid Az
 JV5472:SPC MD       -  BALTIMORE AND OHIO PIER 32 USE           183 38 31.0
 JV5472:UTM  18      -  BALTIMORE AND OHIO PIER 32 USE           184 54 21.5
 JV5472
 JV5472_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6369248799(NAD 83)
 JV5472
 JV5472|---------------------------------------------------------------------|
 JV5472| PID    Reference Object                     Distance      Geod. Az  |
 JV5472|                                                           dddmmss.s |
 JV5472| JV5473 BALTIMORE AND OHIO PIER 32 USE      APPROX. 0.9 KM 1835419.3 |
 JV5472| JV5565 MARYLAND CASUALTY TOWER             APPROX. 3.0 KM 2962513.1 |
 JV5472|---------------------------------------------------------------------|
 JV5472
 JV5472                          SUPERSEDED SURVEY CONTROL
 JV5472
 JV5472  NAD 83(1986)-  39 16 40.20668(N)    076 34 49.06526(W) AD(       ) 3
 JV5472  NAD 27      -  39 16 39.81400(N)    076 34 50.18200(W) AD(       ) 3
 JV5472  USSD        -  39 16 40.18100(N)    076 34 50.02100(W) AD(       ) 3
 JV5472
 JV5472.Superseded values are not recommended for survey control.
 JV5472
 JV5472.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5472.See file dsdata.pdf to determine how the superseded data were derived.
 JV5472
 JV5472
 JV5472  HISTORY     - Date     Condition        Report By
 JV5472  HISTORY     - 1915     MONUMENTED       CGS
 JV5472  HISTORY     - 1924     GOOD             CGS
 JV5472  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV5472
 JV5472                          STATION DESCRIPTION
 JV5472
 JV5472'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5472'AT THE N SIDE OF THE HARBOR, IN AN EARTH-FILL BACK OF A CONCRETE
 JV5472'CURB OR RETAINING WALL, 1.72 METERS (5.65 FEET) BACK FROM THE
 JV5472'SOUTHERLY FACE OF THE CONCRETE, 1.74 METERS (5.72 FEET) BACK FROM
 JV5472'THE WESTERLY FACE, AND 2.48 METERS (8.13 FEET) NE FROM THE OUTER
 JV5472'CORNER.  THE STATION IS MARKED BY A CONCRETE MONUMENT CENTERED BY
 JV5472'A STANDARD U.S.E. BRONZE MARKER.  IT IS BURIED ABOUT 3 INCHES
 JV5472'UNDERGROUND.
 JV5472'
 JV5472'THIS POINT WAS USED IN 1934 FOR THE COMPILATION OF AIR-PHOTO
 JV5472'SHEET NO.5345.
 JV5472
 JV5472                          STATION RECOVERY (1975)
 JV5472
 JV5472'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5472'STATION NOT FOUND, BELIEVED DESTROYED.  THE BULKHEAD OR SEAWALL
 JV5472'AREA NEAR THE SITE OF THE MARK HAS BEEN DESTROYED AND IS NOW IN
 JV5472'RUIN.  STATION SHOULD BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6550 ***********************************************************************
 JV6550  DESIGNATION -  ATOMIC 3
 JV6550  PID         -  JV6550
 JV6550  STATE/COUNTY-  MD/MONTGOMERY
 JV6550  COUNTRY     -  US
 JV6550  USGS QUAD   -  GERMANTOWN (2016)
 JV6550
 JV6550                         *CURRENT SURVEY CONTROL
 JV6550  ______________________________________________________________________
 JV6550* NAD 83(2011) POSITION- 39 11 00.28031(N) 077 15 15.23159(W)   ADJUSTED
 JV6550* NAD 83(2011) ELLIP HT-   129.446 (meters)        (06/27/12)   ADJUSTED
 JV6550* NAD 83(2011) EPOCH   -  2010.00
 JV6550* NAVD 88 ORTHO HEIGHT -   161.30  (meters)      529.2   (feet) RESET
 JV6550  ______________________________________________________________________
 JV6550  GEOID HEIGHT    -        -31.821 (meters)                     GEOID18
 JV6550  NAD 83(2011) X  -  1,092,225.569 (meters)                     COMP
 JV6550  NAD 83(2011) Y  - -4,828,598.921 (meters)                     COMP
 JV6550  NAD 83(2011) Z  -  4,008,202.364 (meters)                     COMP
 JV6550  LAPLACE CORR    -          2.52  (seconds)                    DEFLEC18
 JV6550  VERT ORDER      -  THIRD
 JV6550
 JV6550  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6550  Standards:
 JV6550         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6550            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6550  -------------------------------------------------------------------
 JV6550  NETWORK    0.83   1.71           0.36   0.31   0.87      0.16012829
 JV6550  -------------------------------------------------------------------
 JV6550  Click here for local accuracies and other accuracy information.
 JV6550
 JV6550.The horizontal coordinates were established by GPS observations
 JV6550.and adjusted by the National Geodetic Survey in June 2012.
 JV6550
 JV6550.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6550.been affixed to the stable North American tectonic plate. See 
 JV6550.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6550
 JV6550.The horizontal coordinates are valid at the epoch date displayed above
 JV6550.which is a decimal equivalence of Year/Month/Day.
 JV6550
 JV6550.The orthometric height was computed from unverified reset data.
 JV6550
 JV6550.No vertical observational check was made to the station.
 JV6550
 JV6550.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6550.GEOID18 height accuracy estimate available here.
 JV6550
 JV6550.Click photographs - Photos may exist for this station.
 JV6550
 JV6550.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6550
 JV6550.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6550
 JV6550.The ellipsoidal height was determined by GPS observations
 JV6550.and is referenced to NAD 83.
 JV6550
 JV6550. The following values were computed from the NAD 83(2011) position.
 JV6550
 JV6550;                    North         East     Units Scale Factor Converg.
 JV6550;SPC MD       -   168,397.729   378,034.668   MT  0.99996422   -0 09 34.4
 JV6550;SPC MD       -   552,484.88  1,240,268.74   sFT  0.99996422   -0 09 34.4
 JV6550;UTM  18      - 4,339,550.858   305,296.893   MT  1.00006680   -1 25 28.9
 JV6550
 JV6550!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6550!SPC MD       -   0.99997969  x   0.99996422  =   0.99994391
 JV6550!UTM  18      -   0.99997969  x   1.00006680  =   1.00004649
 JV6550
 JV6550:                Primary Azimuth Mark                     Grid Az
 JV6550:SPC MD       -  ATOMIC 3 AZ MK                           330 49 42.9
 JV6550:UTM  18      -  ATOMIC 3 AZ MK                           332 05 37.4
 JV6550
 JV6550_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0529639550(NAD 83)
 JV6550
 JV6550|---------------------------------------------------------------------|
 JV6550| PID    Reference Object                     Distance      Geod. Az  |
 JV6550|                                                           dddmmss.s |
 JV6550| JV6551 ATOMIC 3 RM 5                        17.580 METERS 17434     |
 JV6550| JV4455 GERMANTOWN AEC TANK                 APPROX. 0.6 KM 1965840.3 |
 JV6550| JV4454 GERMANTOWN ATT MICROWAVE            APPROX. 0.8 KM 1994508.7 |
 JV6550| JV6552 ATOMIC 3 RM 6                        25.440 METERS 25844     |
 JV6550| JV6620 ATOMIC 3 AZ MK                      APPROX. 0.9 KM 3304008.5 |
 JV6550| JV2282 ATOMIC 2                            161.138 METERS 33913     |
 JV6550|---------------------------------------------------------------------|
 JV6550
 JV6550                          SUPERSEDED SURVEY CONTROL
 JV6550
 JV6550  NAD 83(2007)-  39 11 00.28052(N)    077 15 15.23236(W) AD(2002.00) 0
 JV6550  ELLIP H (02/10/07)  129.477  (m)                       GP(2002.00)    
 JV6550  ELLIP H (08/30/02)  129.488  (m)                       GP(       ) 4 2
 JV6550  NAD 83(1991)-  39 11 00.27997(N)    077 15 15.23224(W) AD(       ) 1
 JV6550  ELLIP H (01/27/92)  129.416  (m)                       GP(       ) 4 1
 JV6550  NAD 83(1986)-  39 11 00.27970(N)    077 15 15.24265(W) AD(       ) 1
 JV6550  NAVD 88 (01/11/94)  161.3    (m)  GEOID93  model used  GPS OBS        
 JV6550  NGVD 29             161.50   (m)          529.9    (f) LEVELING    3  
 JV6550
 JV6550.Superseded values are not recommended for survey control.
 JV6550
 JV6550.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6550.See file dsdata.pdf to determine how the superseded data were derived.
 JV6550
 JV6550_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6550_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6550_STAMPING: ATOMIC 3 1984
 JV6550_MARK LOGO: NGS
 JV6550_PROJECTION: PROJECTING 2 CENTIMETERS
 JV6550_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6550_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6550+STABILITY: SURFACE MOTION
 JV6550_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6550+SATELLITE: SATELLITE OBSERVATIONS - March 31, 1993
 JV6550
 JV6550  HISTORY     - Date     Condition        Report By
 JV6550  HISTORY     - 1984     MONUMENTED       NGS
 JV6550  HISTORY     - 19891023 GOOD
 JV6550  HISTORY     - 19900404 GOOD             WSSC
 JV6550  HISTORY     - 19930331 GOOD             MSI
 JV6550  HISTORY     - 20040323 MARK NOT FOUND   URS
 JV6550
 JV6550                          STATION DESCRIPTION
 JV6550
 JV6550'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6550'2.2 KM (1.35 MI) NE FROM GERMANTOWN.
 JV6550'141.8 M (465.2 FT) SOUTH-SOUTHEAST FROM THE SOUTHWEST CORNER OF THE
 JV6550'OVERPASS BRIDGE AT THE INTERSECTION OF INTERSTATE HIGHWAY 270 AND
 JV6550'STATE HIGHWAY 118, 22.0 M (72.2 FT) WEST-SOUTHWEST FROM THE CENTER OF
 JV6550'THE SOUTH BOUND LANE OF INTERSTATE HIGHWAY 270, 20.6 M (67.6 FT) EAST
 JV6550'FROM THE CENTER OF A EXIT ROAD WHICH LEADS FROM THE SOUTH BOUND LANE
 JV6550'OF INTERSTATE HIGHWAY 270 ONTO EAST BOUND STATE HIGHWAY 118, AND 7.1
 JV6550'M (23.3 FT) NORTHWEST FROM THE CENTER OF A CATCH BASIN.
 JV6550'THE MARK IS 0.7 METERS  S FROM  A WITNESS POST
 JV6550'THE MARK IS 0.7 M ABOVE HIGHWAY.
 JV6550
 JV6550                          STATION RECOVERY (1989)
 JV6550
 JV6550'RECOVERED 1989
 JV6550'RECOVERED IN GOOD CONDITION.
 JV6550
 JV6550                          STATION RECOVERY (1990)
 JV6550
 JV6550'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV6550'RECOVERED IN GOOD CONDITION.
 JV6550
 JV6550                          STATION RECOVERY (1993)
 JV6550
 JV6550'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV6550'RECOVERED IN GOOD CONDITION.
 JV6550
 JV6550                          STATION RECOVERY (2004)
 JV6550
 JV6550'RECOVERY NOTE BY URS COMPANY 2004
 JV6550'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6620 ***********************************************************************
 JV6620  DESIGNATION -  ATOMIC 3 AZ MK
 JV6620  PID         -  JV6620
 JV6620  STATE/COUNTY-  MD/MONTGOMERY
 JV6620  COUNTRY     -  US
 JV6620  USGS QUAD   -  GERMANTOWN (2016)
 JV6620
 JV6620                         *CURRENT SURVEY CONTROL
 JV6620  ______________________________________________________________________
 JV6620* NAD 83(1991) POSITION- 39 11 26.93966(N) 077 15 34.48160(W)   ADJUSTED
 JV6620* NAVD 88 ORTHO HEIGHT -   157.7   (meters)      517.    (feet) VERTCON3
 JV6620  ______________________________________________________________________
 JV6620  GEOID HEIGHT    -        -31.835 (meters)                     GEOID18
 JV6620  LAPLACE CORR    -          2.96  (seconds)                    DEFLEC18
 JV6620  HORZ ORDER      -  THIRD
 JV6620
 JV6620.The horizontal coordinates were established by classical geodetic methods
 JV6620.and adjusted by the National Geodetic Survey in January 1992.
 JV6620
 JV6620.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6620.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6620
 JV6620.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6620.GEOID18 height accuracy estimate available here.
 JV6620
 JV6620.Click photographs - Photos may exist for this station.
 JV6620
 JV6620.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6620
 JV6620. The following values were computed from the NAD 83(1991) position.
 JV6620
 JV6620;                    North         East     Units Scale Factor Converg.
 JV6620;SPC MD       -   169,221.134   377,575.011   MT  0.99996492   -0 09 46.5
 JV6620;SPC MD       -   555,186.34  1,238,760.68   sFT  0.99996492   -0 09 46.5
 JV6620;UTM  18      - 4,340,384.299   304,855.484   MT  1.00006891   -1 25 41.8
 JV6620
 JV6620!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6620!SPC MD       -   0.99998025  x   0.99996492  =   0.99994517
 JV6620!UTM  18      -   0.99998025  x   1.00006891  =   1.00004916
 JV6620
 JV6620_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0485540384(NAD 83)
 JV6620
 JV6620                          SUPERSEDED SURVEY CONTROL
 JV6620
 JV6620  NAD 83(1986)-  39 11 26.93922(N)    077 15 34.49238(W) AD(       ) 3
 JV6620  NGVD 29 (03/05/91)  157.9    (m)          518.     (f) VERT ANG       
 JV6620
 JV6620.Superseded values are not recommended for survey control.
 JV6620
 JV6620.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6620.See file dsdata.pdf to determine how the superseded data were derived.
 JV6620
 JV6620_MARKER: DZ = AZIMUTH MARK DISK
 JV6620_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6620_STAMPING: ATOMIC 3 1984
 JV6620_MARK LOGO: NGS
 JV6620_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6620_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6620+STABILITY: SURFACE MOTION
 JV6620_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6620+SATELLITE: SATELLITE OBSERVATIONS - July 25, 1990
 JV6620
 JV6620  HISTORY     - Date     Condition        Report By
 JV6620  HISTORY     - 1984     MONUMENTED       NGS
 JV6620  HISTORY     - 19900725 GOOD             WSSC
 JV6620
 JV6620                          STATION DESCRIPTION
 JV6620
 JV6620'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6620'THE MARK IS LOCATED ABOUT 7.25 KM (4.50 MI) NORTHWEST OF GAITHERSBURG,
 JV6620'3.25 KM (2.00 MI) NORTH-NORTHEAST OF GERMANTOWN AND ON THE SOUTH SLOPE
 JV6620'OF A SMALL KNOLL ALONG THE WEST SIDE OF INTERSTATE HIGHWAY 270.
 JV6620'OWNERSHIP--ROAD-RIGHT-OF-WAY.
 JV6620'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 270 AND STATE
 JV6620'HIGHWAY 118, GO NORTHERLY ON INTERSTATE HIGHWAY 270 FOR 0.8 KM
 JV6620'(0.50 MI) TO A CROSSOVER AND THE MARK ON THE LEFT.
 JV6620'THE DISK IS SET IN THE TOP OF THE 0.25 M (0.8 FT) MONUMENT WHICH
 JV6620'PROJECTS 0.02 M (0.1 FT) ABOVE THE SURFACE OF THE GROUND.  IT IS 18.0
 JV6620'WEST-SOUTHWEST OF THE CENTER OF THE SOUTH BOUND LANE OF INTERSTATE
 JV6620'HIGHWAY 270, 37.5 M (123.0 FT) SOUTH-SOUTHWEST OF A LARGE SIGN,
 JV6620'FAIRCHILDS INDUSTRIES, 1.2 M (3.9 FT) EAST-NORTHEAST OF A WOVEN WIRE
 JV6620'RIGHT-OF-WAY FENCE AND 1.1 M (3.6 FT) EAST-NORTHEAST OF A WITNESS
 JV6620'POST.
 JV6620
 JV6620                          STATION RECOVERY (1990)
 JV6620
 JV6620'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV6620'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6551 ***********************************************************************
 JV6551  DESIGNATION -  ATOMIC 3 RM 5
 JV6551  PID         -  JV6551
 JV6551  STATE/COUNTY-  MD/MONTGOMERY
 JV6551  COUNTRY     -  US
 JV6551  USGS QUAD   -  GERMANTOWN (2016)
 JV6551
 JV6551                         *CURRENT SURVEY CONTROL
 JV6551  ______________________________________________________________________
 JV6551* NAD 83(1986) POSITION- 39 10 59.71   (N) 077 15 15.16   (W)   HD_HELD1
 JV6551* NAVD 88 ORTHO HEIGHT -   160.53  (meters)      526.7   (feet) RESET
 JV6551  ______________________________________________________________________
 JV6551  GEOID HEIGHT    -        -31.821 (meters)                     GEOID18
 JV6551  VERT ORDER      -  THIRD
 JV6551
 JV6551.The horizontal coordinates were determined by differentially corrected
 JV6551.hand held GPS observations or other comparable positioning techniques
 JV6551.and have an estimated accuracy of +/- 3 meters.
 JV6551
 JV6551.The orthometric height was computed from unverified reset data.
 JV6551
 JV6551.No vertical observational check was made to the station.
 JV6551
 JV6551.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6551.GEOID18 height accuracy estimate available here.
 JV6551
 JV6551.Click photographs - Photos may exist for this station.
 JV6551
 JV6551;                    North         East    Units  Estimated Accuracy
 JV6551;SPC MD       -   168,380.1     378,036.3     MT  (+/- 3 meters HH1 GPS) 
 JV6551
 JV6551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0529839533(NAD 83)
 JV6551
 JV6551                          SUPERSEDED SURVEY CONTROL
 JV6551
 JV6551.No superseded survey control is available for this station.
 JV6551
 JV6551_MARKER: DR = REFERENCE MARK DISK
 JV6551_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6551_STAMPING: ATOMIC 3 NO 5 1984
 JV6551_MARK LOGO: NGS
 JV6551_PROJECTION: PROJECTING 5 CENTIMETERS
 JV6551_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6551+STABILITY: SURFACE MOTION
 JV6551
 JV6551  HISTORY     - Date     Condition        Report By
 JV6551  HISTORY     - 1984     MONUMENTED       NGS
 JV6551
 JV6551                          STATION DESCRIPTION
 JV6551
 JV6551'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6551'2.2 KM (1.35 MI) NE FROM GERMANTOWN.
 JV6551'159.4 M (523.0 FT) SOUTH-SOUTHEAST FROM THE SOUTHWEST CORNER OF THE
 JV6551'OVERPASS BRIDGE AT THE INTERSECTION OF INTERSTATE HIGHWAY 270 AND
 JV6551'STATE HIGHWAY 118, 30.5 METERS WEST-SOUTHWEST FROM THE CENTER OF THE
 JV6551'SOUTH BOUND LANE OF INTERSTATE HIGHWAY 270, 35.7 M (117.1 FT)
 JV6551'NORTHWEST FROM THE CENTER OF A CATCH BASIN, 26.1 M (85.6 FT) EAST
 JV6551'FROM THE CENTER OF A EXIT ROAD LEAVING SOUTH BOUND INTERSTATE HIGHWAY
 JV6551'270 ONTO EAST BOUND STATE HIGHWAY 118 AND ABOUT 30 METERS
 JV6551'SOUTH-SOUTHWEST FROM THE HIGHEST POINT OF A SMALL HILL IN THE GRASS
 JV6551'COVERED TRAFFIC ISLAND.
 JV6551'THE MARK IS 18.3 METERS  S FROM  A WITNESS POST
 JV6551'THE MARK IS 3.0 M ABOVE I-20.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6552 ***********************************************************************
 JV6552  DESIGNATION -  ATOMIC 3 RM 6
 JV6552  PID         -  JV6552
 JV6552  STATE/COUNTY-  MD/MONTGOMERY
 JV6552  COUNTRY     -  US
 JV6552  USGS QUAD   -  GERMANTOWN (2016)
 JV6552
 JV6552                         *CURRENT SURVEY CONTROL
 JV6552  ______________________________________________________________________
 JV6552* NAD 83(1991) POSITION- 39 11 00.11874(N) 077 15 16.27172(W)   ADJUSTED
 JV6552* NAVD 88 ORTHO HEIGHT -   160.57  (meters)      526.8   (feet) RESET
 JV6552  ______________________________________________________________________
 JV6552  GEOID HEIGHT    -        -31.822 (meters)                     GEOID18
 JV6552  LAPLACE CORR    -          2.53  (seconds)                    DEFLEC18
 JV6552  HORZ ORDER      -  THIRD
 JV6552  VERT ORDER      -  THIRD
 JV6552
 JV6552.The horizontal coordinates were established by classical geodetic methods
 JV6552.and adjusted by the National Geodetic Survey in January 1992.
 JV6552
 JV6552.The orthometric height was computed from unverified reset data.
 JV6552
 JV6552.No vertical observational check was made to the station.
 JV6552
 JV6552.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6552.GEOID18 height accuracy estimate available here.
 JV6552
 JV6552.Click photographs - Photos may exist for this station.
 JV6552
 JV6552.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6552
 JV6552. The following values were computed from the NAD 83(1991) position.
 JV6552
 JV6552;                    North         East     Units Scale Factor Converg.
 JV6552;SPC MD       -   168,392.816   378,009.691   MT  0.99996422   -0 09 35.1
 JV6552;SPC MD       -   552,468.76  1,240,186.79   sFT  0.99996422   -0 09 35.1
 JV6552;UTM  18      - 4,339,546.498   305,271.811   MT  1.00006692   -1 25 29.5
 JV6552
 JV6552!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6552!SPC MD       -   0.99997980  x   0.99996422  =   0.99994402
 JV6552!UTM  18      -   0.99997980  x   1.00006692  =   1.00004672
 JV6552
 JV6552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0527139546(NAD 83)
 JV6552
 JV6552                          SUPERSEDED SURVEY CONTROL
 JV6552
 JV6552  NAD 83(1986)-  39 11 00.11845(N)    077 15 16.28216(W) AD(       ) 3
 JV6552  NGVD 29             160.78   (m)          527.5    (f) LEVELING    3  
 JV6552
 JV6552.Superseded values are not recommended for survey control.
 JV6552
 JV6552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6552.See file dsdata.pdf to determine how the superseded data were derived.
 JV6552
 JV6552_MARKER: DR = REFERENCE MARK DISK
 JV6552_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6552_SP_SET: CURB
 JV6552_STAMPING: ATOMIC 3 NO 6 1984
 JV6552_MARK LOGO: NGS
 JV6552_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6552
 JV6552  HISTORY     - Date     Condition        Report By
 JV6552  HISTORY     - 1984     MONUMENTED       NGS
 JV6552  HISTORY     - 19950428 MARK NOT FOUND   USPSQD
 JV6552
 JV6552                          STATION DESCRIPTION
 JV6552
 JV6552'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6552'2.2 KM (1.35 MI) NE FROM GERMANTOWN.
 JV6552'135.4 M (444.2 FT) SOUTH-SOUTHEAST FROM THE SOUTHWEST CORNER OF THE
 JV6552'OVERPASS BRIDGE AT THE INTERSECTION OF INTERSTATE HIGHWAY 270 AND
 JV6552'STATE HIGHWAY 118, 2.6 M (8.5 FT) NORTHWEST FROM THE CENTER OF THE
 JV6552'EXIT ROAD LEADING FROM SOUTH BOUND INTERSTATE HIGHWAY 270 ONTO EAST
 JV6552'BOUND STATE HIGHWAY 118 AND 9.7 M (31.8 FT) SOUTHWEST FROM THE
 JV6552'NORTHEAST END OF A HIGHWAY GUARD RAIL.
 JV6552'THE MARK IS 25.4 METERS  W FROM  A WITNESS POST
 JV6552'THE MARK IS ABOVE LEVEL WITH EXIT ROAD.
 JV6552
 JV6552                          STATION RECOVERY (1995)
 JV6552
 JV6552'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6552'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5740 ***********************************************************************
 HV5740  DESIGNATION -  ATTILA
 HV5740  PID         -  HV5740
 HV5740  STATE/COUNTY-  MD/QUEEN ANNES
 HV5740  COUNTRY     -  US
 HV5740  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5740
 HV5740                         *CURRENT SURVEY CONTROL
 HV5740  ______________________________________________________________________
 HV5740* NAD 83(1991) POSITION- 38 52 27.64024(N) 076 10 01.43163(W)   ADJUSTED
 HV5740* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5740  ______________________________________________________________________
 HV5740  GEOID HEIGHT    -        -34.240 (meters)                     GEOID18
 HV5740  LAPLACE CORR    -         -4.39  (seconds)                    DEFLEC18
 HV5740  HORZ ORDER      -  THIRD
 HV5740
 HV5740.The horizontal coordinates were established by classical geodetic methods
 HV5740.and adjusted by the National Geodetic Survey in January 1992.
 HV5740
 HV5740.The orthometric height was scaled from a topographic map.
 HV5740
 HV5740.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5740.GEOID18 height accuracy estimate available here.
 HV5740
 HV5740.Click photographs - Photos may exist for this station.
 HV5740
 HV5740.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5740
 HV5740. The following values were computed from the NAD 83(1991) position.
 HV5740
 HV5740;                    North         East     Units Scale Factor Converg.
 HV5740;SPC MD       -   134,387.081   472,277.041   MT  0.99994985   +0 31 22.0
 HV5740;SPC MD       -   440,901.61  1,549,462.26   sFT  0.99994985   +0 31 22.0
 HV5740;UTM  18      - 4,303,479.771   398,761.848   MT  0.99972621   -0 43 57.1
 HV5740
 HV5740!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5740!SPC MD       -   1.00000541  x   0.99994985  =   0.99995526
 HV5740!UTM  18      -   1.00000541  x   0.99972621  =   0.99973162
 HV5740
 HV5740_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9876103479(NAD 83)
 HV5740
 HV5740|---------------------------------------------------------------------|
 HV5740| PID    Reference Object                     Distance      Geod. Az  |
 HV5740|                                                           dddmmss.s |
 HV5740| HV5786 TOBINE                              365.530 METERS 01518     |
 HV5740| HV5690 SYLVIA                              280.663 METERS 09907     |
 HV5740| HV5741 BALDWINS                            368.926 METERS 16055     |
 HV5740| HV5685 LE SEUR                             380.470 METERS 21107     |
 HV5740|---------------------------------------------------------------------|
 HV5740
 HV5740                          SUPERSEDED SURVEY CONTROL
 HV5740
 HV5740  NAD 83(1986)-  38 52 27.63570(N)    076 10 01.44477(W) AD(       ) 3
 HV5740  NAD 27      -  38 52 27.19600(N)    076 10 02.62800(W) AD(       ) 3
 HV5740  USSD        -  38 52 27.58900(N)    076 10 02.40000(W) AD(       ) 3
 HV5740
 HV5740.Superseded values are not recommended for survey control.
 HV5740
 HV5740.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5740.See file dsdata.pdf to determine how the superseded data were derived.
 HV5740
 HV5740_MARKER: Z = SEE DESCRIPTION
 HV5740_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5740_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5740+STABILITY: SURFACE MOTION
 HV5740
 HV5740  HISTORY     - Date     Condition        Report By
 HV5740  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5740  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5740
 HV5740                          STATION DESCRIPTION
 HV5740
 HV5740'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5740'STATION IS ON WYE ISLAND, ON THE NORTHWESTERN SHORE OF THE BRANCH
 HV5740'OF WYE RIVER BOUNDING WYE ISLAND ON THE S, ABOUT 3/4 MILE N OF
 HV5740'ENTRANCE TO LLOYD CREEK, AT N SIDE OF ENTRANCE TO A SMALL COVE, ON
 HV5740'SLOPE OF A POINT, ABOUT 3 FEET ABOVE HIGH WATER, 10 YARDS W OF
 HV5740'SHORE, 10 YARDS NNE OF SHORE, AND 11 YARDS NW OF SHORE. STATION IS
 HV5740'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5740'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5740'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV5740'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS
 HV5740'CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES
 HV5740'BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO VARIOUS
 HV5740'POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 10-INCH CEDAR
 HV5740'STUMP, 8.36 METERS (27.43 FEET), S 32 DEG 25 MIN W.  NAIL IN
 HV5740'BLAZE IN 8-INCH CEDAR TREE, 38.64 METERS (126.8 FEET), N 2 DEG 52
 HV5740'MIN E.  NEAR PEAK OF VERY LARGE BARN, 3/8 MILE, S 67 DEG 12 MIN E.
 HV5740'NEAR PEAK OF HOUSE 5/8 MILE, S 59 DEG 49 MIN E.  SPINDLE ON
 HV5740'CUPOLA, 1/4 MILE, S 36 DEG 10 MIN E.  LEFT CORNER OF BALDWIN
 HV5740'HOUSE, 1/4 MILE, S 31 DEG 54 MIN E.  FLAGPOLE ON WHARF HOUSE, 1/4
 HV5740'MILE, S 17 DEG 59 MIN E. WINDMILL, 1-1/4 MILES, S 1 DEG 11 MIN E.
 HV5740
 HV5740                          STATION RECOVERY (1940)
 HV5740
 HV5740'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5740'STATION MARK SEACHED FOR BUT NOT FOUND.  2-INCH TILE PIPE WHICH
 HV5740'APPEARS TO HAVE BEEN THE SUBSURFACE MARK WAS FOUND WASHED OUT.
 HV5740'
 HV5740'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7644 ***********************************************************************
 DG7644  DESIGNATION -  AUSTIN
 DG7644  PID         -  DG7644
 DG7644  STATE/COUNTY-  MD/CAROLINE
 DG7644  COUNTRY     -  US
 DG7644  USGS QUAD   -  RIDGELY (2017)
 DG7644
 DG7644                         *CURRENT SURVEY CONTROL
 DG7644  ______________________________________________________________________
 DG7644* NAD 83(1986) POSITION- 38 56 38.3    (N) 075 52 34.1    (W)   HD_HELD2
 DG7644* NAVD 88 ORTHO HEIGHT -    17.967 (meters)       58.95  (feet) ADJUSTED
 DG7644  ______________________________________________________________________
 DG7644  GEOID HEIGHT    -        -34.591 (meters)                     GEOID18
 DG7644  DYNAMIC HEIGHT  -         17.957 (meters)       58.91  (feet) COMP
 DG7644  MODELED GRAVITY -    980,052.7   (mgal)                       NAVD 88
 DG7644
 DG7644  VERT ORDER      -  SECOND    CLASS I
 DG7644
 DG7644.The horizontal coordinates were established by autonomous hand held GPS
 DG7644.observations and have an estimated accuracy of +/- 10 meters.
 DG7644
 DG7644.The orthometric height was determined by differential leveling and
 DG7644.adjusted by the NATIONAL GEODETIC SURVEY
 DG7644.in December 2004.
 DG7644
 DG7644.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7644.GEOID18 height accuracy estimate available here.
 DG7644
 DG7644.Click photographs - Photos may exist for this station.
 DG7644
 DG7644.The dynamic height is computed by dividing the NAVD 88
 DG7644.geopotential number by the normal gravity value computed on the
 DG7644.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7644.degrees latitude (g = 980.6199 gals.).
 DG7644
 DG7644.The modeled gravity was interpolated from observed gravity values.
 DG7644
 DG7644;                    North         East    Units  Estimated Accuracy
 DG7644;SPC MD       -   142,386.      497,426.      MT  (+/- 10 meters HH2 GPS)
 DG7644
 DG7644_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2407310924(NAD 83)
 DG7644
 DG7644                          SUPERSEDED SURVEY CONTROL
 DG7644
 DG7644.No superseded survey control is available for this station.
 DG7644
 DG7644_MARKER: DH = HORIZONTAL CONTROL DISK
 DG7644_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7644_STAMPING: AUSTIN 1966
 DG7644_MARK LOGO: MDBCSM
 DG7644_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7644_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7644+STABILITY: SURFACE MOTION
 DG7644_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7644+SATELLITE: SATELLITE OBSERVATIONS - March 19, 2005
 DG7644
 DG7644  HISTORY     - Date     Condition        Report By
 DG7644  HISTORY     - 1966     MONUMENTED       MDBCSM
 DG7644  HISTORY     - 20021010 GOOD             MDSHA
 DG7644  HISTORY     - 20050319 GOOD             USPSQD
 DG7644
 DG7644                          STATION DESCRIPTION
 DG7644
 DG7644'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7644'THE STATION IS LOCATED IN THE TOWN OF RIDGELY.  TO REACH THE STATION
 DG7644'FROM THE INTERSECTION OF STATE HIGHWAY 480 AND STATE  HIGHWAY 312 IN
 DG7644'RIDGELY, GO NORTHEAST ALONG STATE HIGHWAY 480 FOR 0.3 MI (0.48 KM) TO
 DG7644'A CEMETERY AND THE STATION ON THE RIGHT.  THE STATION IS A MARYLAND
 DG7644'STATE CONTROL SURVEY DISK SET IN THE TOP OF A 6 INCH (15 CM) ROUND
 DG7644'CONCRETE MONUMENT WHICH IS ABOUT 3 INCH (8 CM) BELOW THE LEVEL OF THE
 DG7644'GROUND.  IT IS 160.0 FT (48.8 M) SOUTHEAST OF THE CENTER LINE OF THE
 DG7644'HIGHWAY, 27.0 FT (8.2 M) NORTHEAST OF THE CENTER OF THE MACADAM
 DG7644'ENTRANCE TO THE CEMETERY, 21.5 FT (6.6 M) NORTH OF A FLAGPOLE, 10.7 FT
 DG7644'(3.3 M) NORTHWEST OF THE NORTHWEST CORNER OF THE JAMES V AUSTIN
 DG7644'HEADSTONE, 12.9 FT (3.9 M) SOUTHWEST OF THE SOUTHWEST CORNER OF THE
 DG7644'WEST GREEN HEADSTONE.
 DG7644
 DG7644                          STATION RECOVERY (2005)
 DG7644
 DG7644'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 DG7644'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5952 ***********************************************************************
 HV5952  DESIGNATION -  AUSTIN MSFC 1910
 HV5952  PID         -  HV5952
 HV5952  STATE/COUNTY-  MD/DORCHESTER
 HV5952  COUNTRY     -  US
 HV5952  USGS QUAD   -  CHURCH CREEK (2016)
 HV5952
 HV5952                         *CURRENT SURVEY CONTROL
 HV5952  ______________________________________________________________________
 HV5952* NAD 83(1991) POSITION- 38 31 34.56533(N) 076 11 17.52400(W)   ADJUSTED
 HV5952* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5952  ______________________________________________________________________
 HV5952  GEOID HEIGHT    -        -34.876 (meters)                     GEOID18
 HV5952  LAPLACE CORR    -         -5.10  (seconds)                    DEFLEC18
 HV5952  HORZ ORDER      -  THIRD
 HV5952
 HV5952.The horizontal coordinates were established by classical geodetic methods
 HV5952.and adjusted by the National Geodetic Survey in January 1992.
 HV5952
 HV5952.The orthometric height was scaled from a topographic map.
 HV5952
 HV5952.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5952.GEOID18 height accuracy estimate available here.
 HV5952
 HV5952.Click photographs - Photos may exist for this station.
 HV5952
 HV5952.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5952
 HV5952. The following values were computed from the NAD 83(1991) position.
 HV5952
 HV5952;                    North         East     Units Scale Factor Converg.
 HV5952;SPC MD       -    95,733.907   470,786.563   MT  0.99996835   +0 30 34.2
 HV5952;SPC MD       -   314,086.99  1,544,572.25   sFT  0.99996835   +0 30 34.2
 HV5952;UTM  18      - 4,264,877.174   396,427.348   MT  0.99973210   -0 44 24.6
 HV5952
 HV5952!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5952!SPC MD       -   1.00000551  x   0.99996835  =   0.99997386
 HV5952!UTM  18      -   1.00000551  x   0.99973210  =   0.99973761
 HV5952
 HV5952:                Primary Azimuth Mark                     Grid Az
 HV5952:SPC MD       -  TOM MSFC 1910                            265 46 23.5
 HV5952:UTM  18      -  TOM MSFC 1910                            267 01 22.3
 HV5952
 HV5952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9642764877(NAD 83)
 HV5952
 HV5952|---------------------------------------------------------------------|
 HV5952| PID    Reference Object                     Distance      Geod. Az  |
 HV5952|                                                           dddmmss.s |
 HV5952| HV5920 NEIL 1901                           395.059 METERS 02511     |
 HV5952| HV5924 TOM MSFC 1910                       APPROX. 1.0 KM 2661657.7 |
 HV5952|---------------------------------------------------------------------|
 HV5952
 HV5952                          SUPERSEDED SURVEY CONTROL
 HV5952
 HV5952  NAD 83(1986)-  38 31 34.56298(N)    076 11 17.53986(W) AD(       ) 3
 HV5952  NAD 27      -  38 31 34.15500(N)    076 11 18.72600(W) AD(       ) 3
 HV5952
 HV5952.Superseded values are not recommended for survey control.
 HV5952
 HV5952.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5952.See file dsdata.pdf to determine how the superseded data were derived.
 HV5952
 HV5952_MARKER: Z = SEE DESCRIPTION
 HV5952_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5952_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5952+STABILITY: SURFACE MOTION
 HV5952
 HV5952  HISTORY     - Date     Condition        Report By
 HV5952  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5952  HISTORY     - 1941     MARK NOT FOUND   CGS
 HV5952  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV5952
 HV5952                          STATION DESCRIPTION
 HV5952
 HV5952'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5952'ON THE SOUTHERN SHORE OF FISHING CREEK, ON A POINT ABOUT 5/8 MILE
 HV5952'ESE OF WINDMILL POINT, AT EDGE OF YOUNG ORCHARD, ABOUT 3 FEET
 HV5952'ABOVE HIGH WATER, 18 YARDS S OF SHORE, 35 YARDS SW OF SHORE, 2
 HV5952'YARDS SW OF EDGE OF BANK NEXT TO MARSH, 10 YARDS E OF EDGE OF
 HV5952'BANK, AND 75 YARDS NNW OF NEAR CORNER OF TWO-STORY HOUSE. STATION
 HV5952'IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HV5952'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2
 HV5952'FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE LETTERS
 HV5952'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE
 HV5952'MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP
 HV5952'2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS
 HV5952'TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NEAR PEAK OF HOUSE,
 HV5952'3/4 MILE, S 73 DEG 23 MIN W.  CUPOLA ON BROOKS BARN, 7/8 MILE, S
 HV5952'85 DEG 6 MIN W. CENTER OF CUPOLA ON BROOKS WORKSHOP, 7/8 MILE, S
 HV5952'85 DEG 35 MIN W. LEFT CHIMNEY OF HOUSE, 1 MILE, N 84 DEG 5 MIN W.
 HV5952'LEFT CHIMNEY OF HOUSE, 1/4 MILE, N 14 DEG 27 MIN E.  CHIMNEY ON
 HV5952'LEFT END OF HOUSE, 1/2 MILE, N 55 DEG 28 MIN E.  NEAR PEAK OF 1
 HV5952'1/2-STORY HOUSE 1-1/8 MILES, N 65 DEG 12 MIN E.  NEAR PEAK OF
 HV5952'HOUSE, 1 MILE, N 78 DEG 38 MIN E.  NAIL IN BLAZE IN 10-INCH
 HV5952'PERSIMMON TREE, 4.86 METERS (15.94 FEET), S 60 DEG 28 MIN E.  NEAR
 HV5952'CORNER OF HOUSE, 75 YARDS S 36 DEG 7 MIN E.
 HV5952
 HV5952                          STATION RECOVERY (1941)
 HV5952
 HV5952'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HV5952'SEARCHED FOR, BUT NOT FOUND.  THE ORCHARD REFERRED TO IN THE
 HV5952'DESCRIPTION HAS BEEN PULLED UP, AND THE LAND PLOWED.
 HV5952'
 HV5952'RECOMMENDED THAT STATION BE CONSIDERED LOST.
 HV5952
 HV5952                          STATION RECOVERY (1942)
 HV5952
 HV5952'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV5952'THIS STATION WAS FOUND LYING ON THE BANK ALONG THE SHORE OF
 HV5952'FISHING CREEK.  THIS STATION IS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1044 ***********************************************************************
 HV1044  DESIGNATION -  AUTH
 HV1044  PID         -  HV1044
 HV1044  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1044  COUNTRY     -  US
 HV1044  USGS QUAD   -  ANACOSTIA (2016)
 HV1044
 HV1044                         *CURRENT SURVEY CONTROL
 HV1044  ______________________________________________________________________
 HV1044* NAD 83(1993) POSITION- 38 49 16.37339(N) 076 55 14.91784(W)   ADJUSTED
 HV1044* NAVD 88 ORTHO HEIGHT -    81.459 (meters)      267.25  (feet) ADJUSTED
 HV1044  ______________________________________________________________________
 HV1044  GEOID HEIGHT    -        -32.413 (meters)                     GEOID18
 HV1044  LAPLACE CORR    -         -4.24  (seconds)                    DEFLEC18
 HV1044  DYNAMIC HEIGHT  -         81.413 (meters)      267.10  (feet) COMP
 HV1044  MODELED GRAVITY -    980,070.7   (mgal)                       NAVD 88
 HV1044
 HV1044  HORZ ORDER      -  THIRD
 HV1044  VERT ORDER      -  SECOND    CLASS 0
 HV1044
 HV1044.The horizontal coordinates were established by classical geodetic methods
 HV1044.and adjusted by the National Geodetic Survey in November 1994.
 HV1044
 HV1044.The orthometric height was determined by differential leveling and
 HV1044.adjusted by the NATIONAL GEODETIC SURVEY
 HV1044.in June 1991.
 HV1044
 HV1044.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1044.GEOID18 height accuracy estimate available here.
 HV1044
 HV1044.Click photographs - Photos may exist for this station.
 HV1044
 HV1044.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1044
 HV1044.The dynamic height is computed by dividing the NAVD 88
 HV1044.geopotential number by the normal gravity value computed on the
 HV1044.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1044.degrees latitude (g = 980.6199 gals.).
 HV1044
 HV1044.The modeled gravity was interpolated from observed gravity values.
 HV1044
 HV1044. The following values were computed from the NAD 83(1993) position.
 HV1044
 HV1044;                    North         East     Units Scale Factor Converg.
 HV1044;SPC MD       -   128,162.558   406,876.788   MT  0.99995030   +0 02 58.9
 HV1044;SPC MD       -   420,479.99  1,334,894.93   sFT  0.99995030   +0 02 58.9
 HV1044;UTM  18      - 4,298,689.509   333,249.129   MT  0.99994241   -1 12 15.9
 HV1044
 HV1044!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1044!SPC MD       -   0.99999230  x   0.99995030  =   0.99994261
 HV1044!UTM  18      -   0.99999230  x   0.99994241  =   0.99993472
 HV1044
 HV1044:                Primary Azimuth Mark                     Grid Az
 HV1044:SPC MD       -  SUITLAND US ARMY RELAY TOWER             332 11 35.1
 HV1044:UTM  18      -  SUITLAND US ARMY RELAY TOWER             333 26 49.9
 HV1044
 HV1044_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3324998689(NAD 83)
 HV1044
 HV1044|---------------------------------------------------------------------|
 HV1044| PID    Reference Object                     Distance      Geod. Az  |
 HV1044|                                                           dddmmss.s |
 HV1044| HV1049 AUTH RM 2                            39.803 METERS 00458     |
 HV1044| HV1045 AUTH 2                               23.250 METERS 07652     |
 HV1044| HV1048 AUTH RM 1                            27.912 METERS 14538     |
 HV1044| HV7617 SUITLAND US ARMY RELAY TOWER        APPROX. 2.9 KM 3321434.0 |
 HV1044| HV7611 SUITLAND TANK                       APPROX. 3.1 KM 3515548.2 |
 HV1044|---------------------------------------------------------------------|
 HV1044
 HV1044                          SUPERSEDED SURVEY CONTROL
 HV1044
 HV1044  NAD 83(1991)-  38 49 16.37253(N)    076 55 14.91842(W) AD(       ) 3
 HV1044  NAD 83(1986)-  38 49 16.37148(N)    076 55 14.93090(W) AD(       ) 3
 HV1044  NAD 27      -  38 49 15.96440(N)    076 55 16.02442(W) AD(       ) 3
 HV1044  NGVD 29              81.71   (m)          268.1    (f) LEVELING    3  
 HV1044  NGVD 29 (11/26/84)   81.708  (m)          268.07   (f) ADJUSTED    2 0
 HV1044
 HV1044.Superseded values are not recommended for survey control.
 HV1044
 HV1044.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1044.See file dsdata.pdf to determine how the superseded data were derived.
 HV1044
 HV1044_MARKER: DS = TRIANGULATION STATION DISK
 HV1044_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1044_STAMPING: AUTH 1958
 HV1044_MARK LOGO: CGS
 HV1044_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1044+STABILITY: SURFACE MOTION
 HV1044
 HV1044  HISTORY     - Date     Condition        Report By
 HV1044  HISTORY     - 1958     MONUMENTED       CGS
 HV1044  HISTORY     - 1958     GOOD             CGS
 HV1044  HISTORY     - 1960     GOOD             MDDT
 HV1044
 HV1044                          STATION DESCRIPTION
 HV1044
 HV1044'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1044'STATION IS LOCATED ABOUT 6.5 MILES SOUTHEAST OF THE CENTER OF
 HV1044'WASHINGTON, D.C. ON THE PROPERTY OF STATE HIGHWAY NO. 5 (BRANCH
 HV1044'AVENUE) AT THE JUNCTION OF STATE HIGHWAY NO. 5 AND AUTH
 HV1044'ROAD.  THE STATION IS 43 FEET EAST-NORTHEAST OF CENTERLINE OF
 HV1044'STATE HIGHWAY NO. 5, 80 FEET WEST-SOUTHWEST OF HIGH LINE POLE AND
 HV1044'59 PACES SOUTH-SOUTHEAST OF STORM SEWER.  THE MARK IS SET
 HV1044'FLUSH WITH THE SURFACE OF THE GROUND AND THE DISK IS STAMPED
 HV1044'AUTH 1958.
 HV1044'
 HV1044'R.M.NO. 1 IS 49 FEET EAST-NORTHEAST OF CENTERLINE OF STATE HIGHWAY
 HV1044'NO. 5 AND 100 FEET WEST-SOUTHWEST OF SOUTHWEST SIDE OF HOUSE.  THE
 HV1044'MARK IS 1 INCH BELOW THE SURFACE OF THE GROUND AND THE DISK IS
 HV1044'STAMPED AUTH NO 1 1958.
 HV1044'
 HV1044'R.M.NO. 2 IS 97 FEET SOUTH OF CENTERLINE OF AUTH ROAD AND 124
 HV1044'FEET EAST-NORTHEAST OF CENTERLINE OF STATE HIGHWAY NO. 5.  THE
 HV1044'MARK IS SET FLUSH WITH THE GROUND AND THE DISK IS STAMPED AUTH
 HV1044'NO2 1958.
 HV1044'
 HV1044'TRAVERSE STATION AZU (AZIMUTH MARK) IS 42 FEET NORTHEAST OF
 HV1044'CENTERLINE OF STATE HIGHWAY NO. 5 AND 102 FEET SOUTHEAST OF
 HV1044'DRAIN-STORM-SEWER.  THE MARK IS SET FLUSH WITH THE SURFACE OF THE
 HV1044'GROUND AND THE DISK IF STAMPED AZU 1958.
 HV1044'
 HV1044'TO REACH FROM THE JUNCTION OF STATE HIGHWAY NO. 5 AND STATE
 HV1044'HIGHWAY NO. 414, SOUTHEAST OF WASHINGTON, D.C., GO SOUTHEAST ON
 HV1044'STATE HIGHWAY NO. 5 (BRANCH AVENUE) FOR 1.25 MILES TO AUTH ROAD
 HV1044'LEFT AND STATION SITE JUST SOUTH OF INTERSECTION AS DESCRIBED.
 HV1044'
 HV1044'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 HV1044
 HV1044                          STATION RECOVERY (1958)
 HV1044
 HV1044'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV1044'1.4 MI NW FROM CAMP SPRINGS.
 HV1044'ABOUT 1.4 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE
 HV1044'INTERSECTION OF STATE HIGHWAY 337 AT CAMP SPRINGS, NEAR THE
 HV1044'JUNCTION OF STATE HIGHWAY 5 AND AUTH ROAD, 43 FEET EAST OF THE
 HV1044'CENTER LINE OF STATE HIGHWAY 5, 80 FEET SOUTHWEST OF A POWER
 HV1044'LINE POLE, 27.8 FEET NORTHEAST OF THE NORTHEAST SIDE OF AN IRON
 HV1044'MAN-HOLE COVER, 59 PACES SOUTH-SOUTHEAST OF A STORM SEWER, SET
 HV1044'IN THE TOP A CONCRETE POST PROJECTING 1 INCH ABOVE THE GROUND.
 HV1044
 HV1044                          STATION RECOVERY (1960)
 HV1044
 HV1044'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 HV1044'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO BE
 HV1044'IN GOOD CONDITION.  PENDING HIGHWAY CONSTRUCTION MADE IT NECESSARY
 HV1044'TO DESTROY THE STATION AND REFERENCE MARKS NO. 1 AND NO. 2.
 HV1044'
 HV1044'AUTH 2 1960 AND REFERENCE MARKS NO. 3 AND NO. 4 WERE ESTABLISHED
 HV1044'BY THIS PARTY.
 HV1044'
 HV1044'SEE DESCRIPTION FOR AUTH 2 1960.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1045 ***********************************************************************
 HV1045  DESIGNATION -  AUTH 2
 HV1045  PID         -  HV1045
 HV1045  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1045  COUNTRY     -  US
 HV1045  USGS QUAD   -  ANACOSTIA (2016)
 HV1045
 HV1045                         *CURRENT SURVEY CONTROL
 HV1045  ______________________________________________________________________
 HV1045* NAD 83(1993) POSITION- 38 49 16.54470(N) 076 55 13.97923(W)   NO CHECK
 HV1045* NAVD 88 ORTHO HEIGHT -    83.31  (meters)      273.3   (feet) RESET
 HV1045  ______________________________________________________________________
 HV1045  GEOID HEIGHT    -        -32.413 (meters)                     GEOID18
 HV1045  LAPLACE CORR    -         -4.24  (seconds)                    DEFLEC18
 HV1045  HORZ ORDER      -  THIRD
 HV1045  VERT ORDER      -  THIRD
 HV1045
 HV1045.The horizontal coordinates were established by classical geodetic methods
 HV1045.and adjusted by the National Geodetic Survey in November 1994.
 HV1045
 HV1045.No horizontal observational check was made to the station.
 HV1045
 HV1045.The orthometric height was computed from unverified reset data.
 HV1045
 HV1045.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1045.GEOID18 height accuracy estimate available here.
 HV1045
 HV1045.Click photographs - Photos may exist for this station.
 HV1045
 HV1045.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1045
 HV1045. The following values were computed from the NAD 83(1993) position.
 HV1045
 HV1045;                    North         East     Units Scale Factor Converg.
 HV1045;SPC MD       -   128,167.860   406,899.425   MT  0.99995030   +0 02 59.5
 HV1045;SPC MD       -   420,497.39  1,334,969.20   sFT  0.99995030   +0 02 59.5
 HV1045;UTM  18      - 4,298,694.314   333,271.876   MT  0.99994232   -1 12 15.3
 HV1045
 HV1045!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1045!SPC MD       -   0.99999201  x   0.99995030  =   0.99994231
 HV1045!UTM  18      -   0.99999201  x   0.99994232  =   0.99993433
 HV1045
 HV1045:                Primary Azimuth Mark                     Grid Az
 HV1045:SPC MD       -  AZU                                      141 37 15.0
 HV1045:UTM  18      -  AZU                                      142 52 29.8
 HV1045
 HV1045_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3327198694(NAD 83)
 HV1045
 HV1045|---------------------------------------------------------------------|
 HV1045| PID    Reference Object                     Distance      Geod. Az  |
 HV1045|                                                           dddmmss.s |
 HV1045| HV1047 AUTH 2 RM 4                          33.315 METERS 05742     |
 HV1045| HV7545 AZU                                 APPROX. 1.0 KM 1414014.5 |
 HV1045| HV1044 AUTH                                 23.250 METERS 25652     |
 HV1045| HV7617 SUITLAND US ARMY RELAY TOWER        APPROX. 2.9 KM 3314815.8 |
 HV1045| HV1046 AUTH 2 RM 3                          16.825 METERS 34237     |
 HV1045| HV7611 SUITLAND TANK                       APPROX. 3.1 KM 3512953.2 |
 HV1045|---------------------------------------------------------------------|
 HV1045
 HV1045                          SUPERSEDED SURVEY CONTROL
 HV1045
 HV1045  NAD 83(1991)-  38 49 16.54384(N)    076 55 13.97980(W) AD(       ) 3
 HV1045  NAD 83(1986)-  38 49 16.54279(N)    076 55 13.99229(W) AD(       ) 3
 HV1045  NAD 27      -  38 49 16.13580(N)    076 55 15.08537(W) AD(       ) 3
 HV1045  NGVD 29 (??/??/??)   83.56   (m)          274.1    (f) RESET       3  
 HV1045  NGVD 29              83.56   (m)          274.1    (f) LEVELING    3  
 HV1045
 HV1045.Superseded values are not recommended for survey control.
 HV1045
 HV1045.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1045.See file dsdata.pdf to determine how the superseded data were derived.
 HV1045
 HV1045_MARKER: DS = TRIANGULATION STATION DISK
 HV1045_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1045_STAMPING: AUTH 2 1960
 HV1045_MARK LOGO: CGS
 HV1045_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1045+STABILITY: SURFACE MOTION
 HV1045
 HV1045  HISTORY     - Date     Condition        Report By
 HV1045  HISTORY     - 1960     MONUMENTED       MDDT
 HV1045  HISTORY     - 1960     GOOD             MDSRC
 HV1045
 HV1045                          STATION DESCRIPTION
 HV1045
 HV1045'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 HV1045'STATION IS LOCATED 6.5 MILES SOUTHEAST OF THE CENTER OF WASHINGTON,
 HV1045'D. C., AT THE INTERSECTION OF MARYLAND ROUTE 5 (BRANCH AVENUE) AND
 HV1045'AUTH ROAD, ON THE PROPERTY OF MARY E. WOOD ESTATE.  IT IS 225 FEET
 HV1045'SOUTH OF THE CENTERLINE OF AUTH ROAD, 78.0 FEET EAST OF THE
 HV1045'CENTERLINE OF MARYLAND ROUTE 5, 36.0 FEET SOUTH OF POLE 813434,
 HV1045'AND 53.0 FEET NORTH OF THE SOUTHWEST CORNER OF BRICK HOUSE OF
 HV1045'MR. THOMAS E. WOOD.  THE MARK IS SET FLUSH AND THE DISK IS
 HV1045'STAMPED AUTH 2 1960.
 HV1045'
 HV1045'REFERENCE MARK NO. 3 IS 167.0 FEET SOUTH OF THE CENTERLINE OF
 HV1045'AUTH ROAD, 92.0 FEET EAST OF THE CENTERLINE OF MARYLAND ROUTE 5,
 HV1045'18.2 FEET NORTH OF POLE 813434.  THE MARK IS SET FLUSH AND THE
 HV1045'DISK IS STAMPED AUTH 2 NO 3 1960.
 HV1045'
 HV1045'REFERENCE MARK NO. 4 IS 220.0 FEET SOUTH OF THE CENTERLINE OF
 HV1045'AUTH ROAD, 29.5 FEET WEST OF THE CENTERLINE OF GRAVEL ENTRANCE TO
 HV1045'MR. WOODS RESIDENCE, 8.0 FEET NORTH OF A HEDGE ROW AND 37.5 FEET
 HV1045'NORTH OF THE NORTHEAST CORNER OF SHED.  THE MARK IS SET FLUSH AND
 HV1045'THE DISK IS STAMPED AUTH 2 NO 4 1960.
 HV1045'
 HV1045'TRAVERSE STATION AZU (AZIMUTH MARK) IS 42 FEET NORTHEAST OF
 HV1045'CENTERLINE OF THE SOUTH BOUND LANE OF MARYLAND ROUTE 5, 102 FEET
 HV1045'SOUTHEAST OF STORM DRAIN SEWER AND 85 FEET SOUTHEAST OF MANCHESTER
 HV1045'DRIVE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED AZU 1958.
 HV1045'
 HV1045'TO REACH FROM THE JUNCTION OF MARYLAND ROUTE 5 AND MARYLAND
 HV1045'ROUTE 414 SOUTHEAST OF WASHINGTON, D. C., GO SOUTHEAST ON MARYLAND
 HV1045'ROUTE 5 FOR 1.25 MILES TO AUTH ROAD AND STATION AS DESCRIBED.
 HV1045
 HV1045                          STATION RECOVERY (1960)
 HV1045
 HV1045'RECOVERY NOTE BY MD STATE ROADS COMM 1960
 HV1045'6.5 MI SE FROM WASHINGTON.
 HV1045'STATION IS LOCATED 6.5 MILES SOUTHEAST OF THE CENTER OF
 HV1045'WASHINGTON, D.C. AT THE INTERSECTION OF MARYLAND ROUTE 5
 HV1045'(BRANCH AVENUE) AND AUTH ROAD, ON THE PROPERTY OF MARY E. WOOD
 HV1045'ESTATE.  IT IS 225 FEET SOUTH OF THE CENTER LINE OF AUTH ROAD,
 HV1045'78.0 FEET EAST OF THE CENTERLINE OF MARYLAND ROUTE 5, 36.0
 HV1045'FEET SOUTH OF POLE 813434, AND 53 FEET NORTH OF THE SOUTHWEST
 HV1045'CORNER OF BRICK HOUSE OF MR. THOMAS E. WOOD, THE MARK IS SET
 HV1045'FLUSH WITH THE SURFACE OF THE GROUND AND STAMPED AUTH 2, 1960.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1046 ***********************************************************************
 HV1046  DESIGNATION -  AUTH 2 RM 3
 HV1046  PID         -  HV1046
 HV1046  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1046  COUNTRY     -  US
 HV1046  USGS QUAD   -  ANACOSTIA (2016)
 HV1046
 HV1046                         *CURRENT SURVEY CONTROL
 HV1046  ______________________________________________________________________
 HV1046* NAD 83(1986) POSITION- 38 49 17.06   (N) 076 55 14.19   (W)   HD_HELD1
 HV1046* NAVD 88 ORTHO HEIGHT -    83.48  (meters)      273.9   (feet) RESET
 HV1046  ______________________________________________________________________
 HV1046  GEOID HEIGHT    -        -32.413 (meters)                     GEOID18
 HV1046  VERT ORDER      -  THIRD
 HV1046
 HV1046.The horizontal coordinates were determined by differentially corrected
 HV1046.hand held GPS observations or other comparable positioning techniques
 HV1046.and have an estimated accuracy of +/- 3 meters.
 HV1046
 HV1046.The orthometric height was computed from unverified reset data.
 HV1046
 HV1046.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1046.GEOID18 height accuracy estimate available here.
 HV1046
 HV1046.Click photographs - Photos may exist for this station.
 HV1046
 HV1046;                    North         East    Units  Estimated Accuracy
 HV1046;SPC MD       -   128,183.7     406,894.3     MT  (+/- 3 meters HH1 GPS) 
 HV1046
 HV1046_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3326798710(NAD 83)
 HV1046
 HV1046                          SUPERSEDED SURVEY CONTROL
 HV1046
 HV1046  NGVD 29 (??/??/??)   83.72   (m)          274.7    (f) RESET       3  
 HV1046
 HV1046.Superseded values are not recommended for survey control.
 HV1046
 HV1046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1046.See file dsdata.pdf to determine how the superseded data were derived.
 HV1046
 HV1046_MARKER: DR = REFERENCE MARK DISK
 HV1046_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1046_STAMPING: AUTH 2 NO 3 1960
 HV1046_MARK LOGO: CGS
 HV1046_PROJECTION: FLUSH
 HV1046_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1046+STABILITY: SURFACE MOTION
 HV1046
 HV1046  HISTORY     - Date     Condition        Report By
 HV1046  HISTORY     - 1960     MONUMENTED       MDSRC
 HV1046
 HV1046                          STATION DESCRIPTION
 HV1046
 HV1046'DESCRIBED BY MD STATE ROADS COMM 1960
 HV1046'6.5 MI SE FROM WASHINGTON.
 HV1046'THIS MARK IS LOCATED 6.5 MILES SOUTHEAST OF THE CENTER OF
 HV1046'WASHINGTON, D.C. AT THE INTERSECTION OF MARYLAND ROUTE 5
 HV1046'(BRANCH AVENUE) AND AUTH ROAD, ON THE PROPERTY OF MARY E. WOOD
 HV1046'ESTATE.  IT IS 167.0 FEET SOUTH OF THE CENTER LINE OF AUTH ROAD,
 HV1046'92 FEET EAST OF THE CENTER LINE OF MARYLAND ROUTE 5, 18.2 FEET
 HV1046'NORTH OF POLE 813434.  THE MARK IS SET FLUSH WITH THE GROUND
 HV1046'AND STAMPED AUTH 2, NO. 3, 1960.  IT IS 55.2 FEET NORTHWEST OF
 HV1046'THE STATION MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1047 ***********************************************************************
 HV1047  DESIGNATION -  AUTH 2 RM 4
 HV1047  PID         -  HV1047
 HV1047  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1047  COUNTRY     -  US
 HV1047  USGS QUAD   -  ANACOSTIA (2016)
 HV1047
 HV1047                         *CURRENT SURVEY CONTROL
 HV1047  ______________________________________________________________________
 HV1047* NAD 83(1986) POSITION- 38 49 17.12   (N) 076 55 12.81   (W)   HD_HELD1
 HV1047* NAVD 88 ORTHO HEIGHT -    83.15  (meters)      272.8   (feet) RESET
 HV1047  ______________________________________________________________________
 HV1047  GEOID HEIGHT    -        -32.414 (meters)                     GEOID18
 HV1047  VERT ORDER      -  THIRD
 HV1047
 HV1047.The horizontal coordinates were determined by differentially corrected
 HV1047.hand held GPS observations or other comparable positioning techniques
 HV1047.and have an estimated accuracy of +/- 3 meters.
 HV1047
 HV1047.The orthometric height was computed from unverified reset data.
 HV1047
 HV1047.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1047.GEOID18 height accuracy estimate available here.
 HV1047
 HV1047.Click photographs - Photos may exist for this station.
 HV1047
 HV1047;                    North         East    Units  Estimated Accuracy
 HV1047;SPC MD       -   128,185.6     406,927.6     MT  (+/- 3 meters HH1 GPS) 
 HV1047
 HV1047_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3330098711(NAD 83)
 HV1047
 HV1047                          SUPERSEDED SURVEY CONTROL
 HV1047
 HV1047  NGVD 29 (??/??/??)   83.40   (m)          273.6    (f) RESET       3  
 HV1047
 HV1047.Superseded values are not recommended for survey control.
 HV1047
 HV1047.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1047.See file dsdata.pdf to determine how the superseded data were derived.
 HV1047
 HV1047_MARKER: DR = REFERENCE MARK DISK
 HV1047_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1047_STAMPING: AUTH 2 NO 4 1960
 HV1047_MARK LOGO: CGS
 HV1047_PROJECTION: FLUSH
 HV1047_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1047+STABILITY: SURFACE MOTION
 HV1047
 HV1047  HISTORY     - Date     Condition        Report By
 HV1047  HISTORY     - 1960     MONUMENTED       MDSRC
 HV1047
 HV1047                          STATION DESCRIPTION
 HV1047
 HV1047'DESCRIBED BY MD STATE ROADS COMM 1960
 HV1047'6.5 MI SE FROM WASHINGTON.
 HV1047'THIS MARK IS LOCATED 6.5 MILES SOUTHEAST OF THE CENTER OF
 HV1047'WASHINGTON, D.C. AT THE INTERSECTION OF MARYLAND ROUTE 5
 HV1047'(BRANCH AVENUE) AND AUTH ROAD, ON THE PROPERTY OF MARY E. WOOD
 HV1047'ESTATE.  IT IS 220.0 FEET SOUTH OF THE CENTER LINE OF AUTH
 HV1047'ROAD, 29.5 FEET WEST OF THE CENTER LINE OF GRAVEL ENTRANCE TO
 HV1047'MR. WOODS RESIDENCE, 8.0 FEET NORTH OF A HEDGE ROW AND 37.5 FEET
 HV1047'NORTH OF THE NORTHEAST CORNER OF SHED.  THE MARK IS SET FLUSH
 HV1047'TO THE GROUND AND STAMPED AUTH 2, NO. 4 1960.  IT IS 109.3
 HV1047'FEET NORTHEAST OF THE STATION MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1048 ***********************************************************************
 HV1048  DESIGNATION -  AUTH RM 1
 HV1048  PID         -  HV1048
 HV1048  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1048  COUNTRY     -  US
 HV1048  USGS QUAD   -  ANACOSTIA (2016)
 HV1048
 HV1048                         *CURRENT SURVEY CONTROL
 HV1048  ______________________________________________________________________
 HV1048* NAD 83(1986) POSITION- 38 49 15.63   (N) 076 55 14.26   (W)   HD_HELD1
 HV1048* NAVD 88 ORTHO HEIGHT -    81.444 (meters)      267.20  (feet) ADJUSTED
 HV1048  ______________________________________________________________________
 HV1048  GEOID HEIGHT    -        -32.414 (meters)                     GEOID18
 HV1048  DYNAMIC HEIGHT  -         81.398 (meters)      267.05  (feet) COMP
 HV1048  MODELED GRAVITY -    980,070.8   (mgal)                       NAVD 88
 HV1048
 HV1048  VERT ORDER      -  SECOND    CLASS 0
 HV1048
 HV1048.The horizontal coordinates were determined by differentially corrected
 HV1048.hand held GPS observations or other comparable positioning techniques
 HV1048.and have an estimated accuracy of +/- 3 meters.
 HV1048
 HV1048.The orthometric height was determined by differential leveling and
 HV1048.adjusted by the NATIONAL GEODETIC SURVEY
 HV1048.in June 1991.
 HV1048
 HV1048.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1048.GEOID18 height accuracy estimate available here.
 HV1048
 HV1048.Click photographs - Photos may exist for this station.
 HV1048
 HV1048.The dynamic height is computed by dividing the NAVD 88
 HV1048.geopotential number by the normal gravity value computed on the
 HV1048.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1048.degrees latitude (g = 980.6199 gals.).
 HV1048
 HV1048.The modeled gravity was interpolated from observed gravity values.
 HV1048
 HV1048;                    North         East    Units  Estimated Accuracy
 HV1048;SPC MD       -   128,139.6     406,892.7     MT  (+/- 3 meters HH1 GPS) 
 HV1048
 HV1048_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3326498666(NAD 83)
 HV1048
 HV1048                          SUPERSEDED SURVEY CONTROL
 HV1048
 HV1048  NGVD 29 (11/26/84)   81.694  (m)          268.02   (f) ADJUSTED    2 0
 HV1048
 HV1048.Superseded values are not recommended for survey control.
 HV1048
 HV1048.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1048.See file dsdata.pdf to determine how the superseded data were derived.
 HV1048
 HV1048_MARKER: DR = REFERENCE MARK DISK
 HV1048_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1048_STAMPING: AUTH NO 1 1958
 HV1048_MARK LOGO: CGS
 HV1048_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1048+STABILITY: SURFACE MOTION
 HV1048
 HV1048  HISTORY     - Date     Condition        Report By
 HV1048  HISTORY     - 1958     MONUMENTED       CGS
 HV1048
 HV1048                          STATION DESCRIPTION
 HV1048
 HV1048'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1048'1.4 MI NW FROM CAMP SPRINGS.
 HV1048'ABOUT 1.4 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE
 HV1048'INTERSECTION OF STATE HIGHWAY  337 AT CAMP SPRINGS, NEAR THE
 HV1048'JUNCTION OF STATE HIGHWAY 5 AND AUTH ROAD, 49 FEET EAST OF THE
 HV1048'CENTER LINE OF STATE HIGHWAY 5, 100 FEET WEST-SOUTHWEST OF THE
 HV1048'SOUTHWEST SIDE OF A HOUSE, 91.6 FEET SOUTHEAST OF THE
 HV1048'STATION AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 HV1048'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1049 ***********************************************************************
 HV1049  DESIGNATION -  AUTH RM 2
 HV1049  PID         -  HV1049
 HV1049  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1049  COUNTRY     -  US
 HV1049  USGS QUAD   -  ANACOSTIA (2016)
 HV1049
 HV1049                         *CURRENT SURVEY CONTROL
 HV1049  ______________________________________________________________________
 HV1049* NAD 83(1986) POSITION- 38 49 17.66   (N) 076 55 14.77   (W)   HD_HELD1
 HV1049* NAVD 88 ORTHO HEIGHT -    83.042 (meters)      272.45  (feet) ADJUSTED
 HV1049  ______________________________________________________________________
 HV1049  GEOID HEIGHT    -        -32.412 (meters)                     GEOID18
 HV1049  DYNAMIC HEIGHT  -         82.996 (meters)      272.30  (feet) COMP
 HV1049  MODELED GRAVITY -    980,070.8   (mgal)                       NAVD 88
 HV1049
 HV1049  VERT ORDER      -  SECOND    CLASS 0
 HV1049
 HV1049.The horizontal coordinates were determined by differentially corrected
 HV1049.hand held GPS observations or other comparable positioning techniques
 HV1049.and have an estimated accuracy of +/- 3 meters.
 HV1049
 HV1049.The orthometric height was determined by differential leveling and
 HV1049.adjusted by the NATIONAL GEODETIC SURVEY
 HV1049.in June 1991.
 HV1049
 HV1049.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1049.GEOID18 height accuracy estimate available here.
 HV1049
 HV1049.Click photographs - Photos may exist for this station.
 HV1049
 HV1049.The dynamic height is computed by dividing the NAVD 88
 HV1049.geopotential number by the normal gravity value computed on the
 HV1049.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1049.degrees latitude (g = 980.6199 gals.).
 HV1049
 HV1049.The modeled gravity was interpolated from observed gravity values.
 HV1049
 HV1049;                    North         East    Units  Estimated Accuracy
 HV1049;SPC MD       -   128,202.2     406,880.3     MT  (+/- 3 meters HH1 GPS) 
 HV1049
 HV1049_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3325398729(NAD 83)
 HV1049
 HV1049                          SUPERSEDED SURVEY CONTROL
 HV1049
 HV1049  NGVD 29 (11/26/84)   83.292  (m)          273.27   (f) ADJUSTED    2 0
 HV1049
 HV1049.Superseded values are not recommended for survey control.
 HV1049
 HV1049.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1049.See file dsdata.pdf to determine how the superseded data were derived.
 HV1049
 HV1049_MARKER: DR = REFERENCE MARK DISK
 HV1049_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1049_STAMPING: AUTH NO 2 1958
 HV1049_MARK LOGO: CGS
 HV1049_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1049+STABILITY: SURFACE MOTION
 HV1049
 HV1049  HISTORY     - Date     Condition        Report By
 HV1049  HISTORY     - 1958     MONUMENTED       CGS
 HV1049
 HV1049                          STATION DESCRIPTION
 HV1049
 HV1049'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1049'1.4 MI NW FROM CAMP SPRINGS.
 HV1049'ABOUT 1.4 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE
 HV1049'INTERSECTION OF STATE HIGHWAY 337 AT CAMP SPRINGS, NEAR THE
 HV1049'JUNCTION OF STATE HIGHWAY 5 AND AUTH ROAD, 97 FEET SOUTH OF
 HV1049'THE CENTER LINE OF AUTH ROAD, 124 FEET EAST OF THE CENTER LINE
 HV1049'OF THE HIGHWAY, 130.6 FEET NORTH OF THE STATION AND SET IN
 HV1049'THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4524 ***********************************************************************
 JV4524  DESIGNATION -  AUXIER
 JV4524  PID         -  JV4524
 JV4524  STATE/COUNTY-  MD/MONTGOMERY
 JV4524  COUNTRY     -  US
 JV4524  USGS QUAD   -  STERLING (2019)
 JV4524
 JV4524                         *CURRENT SURVEY CONTROL
 JV4524  ______________________________________________________________________
 JV4524* NAD 83(1993) POSITION- 39 05 24.29577(N) 077 26 13.07678(W)   ADJUSTED
 JV4524* NAVD 88 ORTHO HEIGHT -   118.7   (meters)      389.    (feet) VERTCON3
 JV4524  ______________________________________________________________________
 JV4524  GEOID HEIGHT    -        -32.097 (meters)                     GEOID18
 JV4524  LAPLACE CORR    -          4.36  (seconds)                    DEFLEC18
 JV4524  HORZ ORDER      -  FIRST
 JV4524
 JV4524.The horizontal coordinates were established by classical geodetic methods
 JV4524.and adjusted by the National Geodetic Survey in November 1994.
 JV4524
 JV4524.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4524.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4524
 JV4524.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4524.GEOID18 height accuracy estimate available here.
 JV4524
 JV4524.Click photographs - Photos may exist for this station.
 JV4524
 JV4524.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4524
 JV4524. The following values were computed from the NAD 83(1993) position.
 JV4524
 JV4524;                    North         East     Units Scale Factor Converg.
 JV4524;SPC MD       -   158,096.817   362,197.048   MT  0.99995682   -0 16 27.3
 JV4524;SPC MD       -   518,689.31  1,188,308.15   sFT  0.99995682   -0 16 27.3
 JV4524;UTM  18      - 4,329,600.381   289,233.541   MT  1.00014701   -1 32 13.8
 JV4524
 JV4524!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4524!SPC MD       -   0.99998642  x   0.99995682  =   0.99994324
 JV4524!UTM  18      -   0.99998642  x   1.00014701  =   1.00013342
 JV4524
 JV4524:                Primary Azimuth Mark                     Grid Az
 JV4524:SPC MD       -  ELMER                                    315 42 39.9
 JV4524:UTM  18      -  ELMER                                    316 58 26.4
 JV4524
 JV4524_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8923329600(NAD 83)
 JV4524
 JV4524|---------------------------------------------------------------------|
 JV4524| PID    Reference Object                     Distance      Geod. Az  |
 JV4524|                                                           dddmmss.s |
 JV4524| CK6551 AUXIER RM 2                          17.249 METERS 00632     |
 JV4524| CK6550 AUXIER RM 1                          12.287 METERS 24726     |
 JV4524| JV4545 ELMER                               APPROX. 5.8 KM 3152612.6 |
 JV4524| JV4546 ELMER ANIMAL CTR TANK               APPROX. 5.5 KM 3183933.6 |
 JV4524| CK6552 AUXIER RM 3                          48.207 METERS 35321     |
 JV4524|---------------------------------------------------------------------|
 JV4524
 JV4524                          SUPERSEDED SURVEY CONTROL
 JV4524
 JV4524  NAD 83(1991)-  39 05 24.29604(N)    077 26 13.07798(W) AD(       ) 1
 JV4524  NAD 83(1986)-  39 05 24.29548(N)    077 26 13.08713(W) AD(       ) 1
 JV4524  NAD 27      -  39 05 23.90915(N)    077 26 14.12412(W) AD(       ) 1
 JV4524  NGVD 29 (07/19/86)  118.9    (m)          390.     (f) VERT ANG       
 JV4524
 JV4524.Superseded values are not recommended for survey control.
 JV4524
 JV4524.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4524.See file dsdata.pdf to determine how the superseded data were derived.
 JV4524
 JV4524_MARKER: DS = TRIANGULATION STATION DISK
 JV4524_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4524_STAMPING: AUXIER 1969
 JV4524_MARK LOGO: CGS
 JV4524_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4524+STABILITY: SURFACE MOTION
 JV4524
 JV4524  HISTORY     - Date     Condition        Report By
 JV4524  HISTORY     - 1969     MONUMENTED       CGS
 JV4524
 JV4524                          STATION DESCRIPTION
 JV4524
 JV4524'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4524'THE STATION IS ABOUT 5-1/2 MILES SOUTHWEST OF DAWSONVILLE, 4 MILES
 JV4524'SOUTH-SOUTHWEST OF POOLESVILLE, 1-1/4 MILES NORTH OF THE POTOMAC
 JV4524'RIVER, AND ON PROPERTY OWNED BY C. CARSON AUXIER.
 JV4524'
 JV4524'TO REACH THE STATION FROM THE POST OFFICE IN POOLESVILLE, GO WEST ON
 JV4524'STATE HIGHWAY 107 FOR 0.05 MILE TO THE JUNCTION OF WILLARD ROAD.
 JV4524'TURN LEFT AND GO SOUTH ON WILLARD ROAD FOR 4.4 MILES TO A T-ROAD,
 JV4524'RIVER ROAD.  TURN RIGHT AND GO WEST ON RIVER ROAD FOR 1.25 MILES
 JV4524'TO A TRACK ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTH ON THE
 JV4524'TRACK ROAD, THROUGH HEAVY WOODS, FOR 0.1 MILE TO THE TOP OF A
 JV4524'LOW RIDGE.  CONTINUE AHEAD, NORTHEAST, ON THE TRACK ROAD FOR 0.1
 JV4524'MILE TO A POWER LINE.  TURN RIGHT, AND GO EAST, FOLLOWING THE
 JV4524'POWER LINE FOR 0.1 MILE TO THE TOP OF A RIDGE.  TURN RIGHT AND GO
 JV4524'SOUTH, THROUGH THE WOODS FOR 0.05 MILE TO THE HIGHEST POINT IN THE
 JV4524'IMMEDIATE VICINITY AND THE STATION.
 JV4524'
 JV4524'THE STATION MARK IS A STANDARD DISK, STAMPED AUXIER 1969, SET IN
 JV4524'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV4524'PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 17.0 FEET SOUTH-SOUTHEAST
 JV4524'OF A TRIANGLE BLAZED TREE AND 5.3 FEET NORTHWEST OF A WITNESS
 JV4524'POST.  THE UNDERGROUND MARK IS 34 INCHES BELOW THE GROUND SURFACE.
 JV4524'
 JV4524'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED AUXIER NO 1 1969, SET
 JV4524'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV4524'PROJECTS 6 INCHES ABOVE THE GROUND.  IT IS 43.2 FEET WEST OF THE
 JV4524'WITNESS POST, 36.5 FEET SOUTHWEST OF THE TRIANGLE BLAZED TREE, AND
 JV4524'ABOUT 4 FEET LOWER IN ELEVATION THAN THE STATION.
 JV4524'
 JV4524'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED AUXIER NO 2 1969, SET
 JV4524'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV4524'PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 56.7 FEET NORTH OF THE
 JV4524'WITNESS POST, 46.5 FEET NORTHEAST OF THE TRIANGLE BLAZED TREE, AND
 JV4524'ABOUT 1 FOOT LOWER IN ELEVATION THAN THE STATION.
 JV4524'
 JV4524'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED AUXIER NO 3 1969, SET
 JV4524'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV4524'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 110.0 FEET SOUTH OF A
 JV4524'POWER LINE POLE NUMBERED F 37634 AND 30.0 FEET EAST OF THE
 JV4524'CENTERLINE OF A DIM TRACK ROAD.
 JV4524'
 JV4524'THE DISTANCE BETWEEN REFERENCE MARK 1 AND 3 COULD NOT BE MEASURED DUE
 JV4524'TO OBSTRUCTIONS.  THE DISTANCE BETWEEN REFERENCE MARK 2 AND 3 COULD
 JV4524'NOT BE MEASURED DUE TO OBSTRUCTIONS.
 JV4524'
 JV4524'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6063 ***********************************************************************
 HV6063  DESIGNATION -  AVON
 HV6063  PID         -  HV6063
 HV6063  STATE/COUNTY-  MD/TALBOT
 HV6063  COUNTRY     -  US
 HV6063  USGS QUAD   -  OXFORD (2016)
 HV6063
 HV6063                         *CURRENT SURVEY CONTROL
 HV6063  ______________________________________________________________________
 HV6063* NAD 83(1991) POSITION- 38 42 21.38713(N) 076 09 46.95852(W)   ADJUSTED
 HV6063* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6063  ______________________________________________________________________
 HV6063  GEOID HEIGHT    -        -34.628 (meters)                     GEOID18
 HV6063  LAPLACE CORR    -         -4.02  (seconds)                    DEFLEC18
 HV6063  HORZ ORDER      -  THIRD
 HV6063
 HV6063.The horizontal coordinates were established by classical geodetic methods
 HV6063.and adjusted by the National Geodetic Survey in January 1992.
 HV6063
 HV6063.The orthometric height was scaled from a topographic map.
 HV6063
 HV6063.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6063.GEOID18 height accuracy estimate available here.
 HV6063
 HV6063.Click photographs - Photos may exist for this station.
 HV6063
 HV6063.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6063
 HV6063. The following values were computed from the NAD 83(1991) position.
 HV6063
 HV6063;                    North         East     Units Scale Factor Converg.
 HV6063;SPC MD       -   115,697.230   472,797.276   MT  0.99995422   +0 31 31.1
 HV6063;SPC MD       -   379,583.33  1,551,169.06   sFT  0.99995422   +0 31 31.1
 HV6063;UTM  18      - 4,284,787.222   398,872.921   MT  0.99972593   -0 43 38.4
 HV6063
 HV6063!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6063!SPC MD       -   1.00000547  x   0.99995422  =   0.99995969
 HV6063!UTM  18      -   1.00000547  x   0.99972593  =   0.99973140
 HV6063
 HV6063:                Primary Azimuth Mark                     Grid Az
 HV6063:SPC MD       -  MUD                                      177 52 24.8
 HV6063:UTM  18      -  MUD                                      179 07 34.3
 HV6063
 HV6063_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9887284787(NAD 83)
 HV6063
 HV6063|---------------------------------------------------------------------|
 HV6063| PID    Reference Object                     Distance      Geod. Az  |
 HV6063|                                                           dddmmss.s |
 HV6063| HV6023 MUD                                 APPROX. 0.7 KM 1782355.9 |
 HV6063|---------------------------------------------------------------------|
 HV6063
 HV6063                          SUPERSEDED SURVEY CONTROL
 HV6063
 HV6063  NAD 83(1986)-  38 42 21.38340(N)    076 09 46.97427(W) AD(       ) 3
 HV6063  NAD 27      -  38 42 20.94600(N)    076 09 48.19200(W) AD(       ) 3
 HV6063  USSD        -  38 42 21.33900(N)    076 09 48.00800(W) AD(       ) 3
 HV6063
 HV6063.Superseded values are not recommended for survey control.
 HV6063
 HV6063.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6063.See file dsdata.pdf to determine how the superseded data were derived.
 HV6063
 HV6063_MARKER: N = NAIL
 HV6063_SETTING: 0 = UNSPECIFIED SETTING
 HV6063
 HV6063  HISTORY     - Date     Condition        Report By
 HV6063  HISTORY     - 1900     MONUMENTED       CGS
 HV6063  HISTORY     - 1902     GOOD             CGS
 HV6063  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6063
 HV6063                          STATION DESCRIPTION
 HV6063
 HV6063'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 HV6063'ON NORTHERN SHORE OF TRED AVON RIVER, ON END OF PECKS POINT, 53.7
 HV6063'FEET AND 34.5 FEET FROM TWO PINE TREES, EACH OF WHICH IS MARKED
 HV6063'WITH A TRIANGULAR BLAZE.  STATION MARKED WITH NAIL IN STUB.
 HV6063
 HV6063                          STATION RECOVERY (1940)
 HV6063
 HV6063'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6063'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  HAS EVIDENTLY BEEN
 HV6063'WASHED OUT, SHORE LINE SHOWS CONSIDERABLE EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6033 ***********************************************************************
 HV6033  DESIGNATION -  AYE
 HV6033  PID         -  HV6033
 HV6033  STATE/COUNTY-  MD/TALBOT
 HV6033  COUNTRY     -  US
 HV6033  USGS QUAD   -  OXFORD (2016)
 HV6033
 HV6033                         *CURRENT SURVEY CONTROL
 HV6033  ______________________________________________________________________
 HV6033* NAD 83(1991) POSITION- 38 43 46.01470(N) 076 08 04.07192(W)   ADJUSTED
 HV6033* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6033  ______________________________________________________________________
 HV6033  GEOID HEIGHT    -        -34.644 (meters)                     GEOID18
 HV6033  LAPLACE CORR    -         -3.75  (seconds)                    DEFLEC18
 HV6033  HORZ ORDER      -  THIRD
 HV6033
 HV6033.The horizontal coordinates were established by classical geodetic methods
 HV6033.and adjusted by the National Geodetic Survey in January 1992.
 HV6033
 HV6033.The orthometric height was scaled from a topographic map.
 HV6033
 HV6033.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6033.GEOID18 height accuracy estimate available here.
 HV6033
 HV6033.Click photographs - Photos may exist for this station.
 HV6033
 HV6033.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6033
 HV6033. The following values were computed from the NAD 83(1991) position.
 HV6033
 HV6033;                    North         East     Units Scale Factor Converg.
 HV6033;SPC MD       -   118,329.759   475,258.277   MT  0.99995309   +0 32 35.7
 HV6033;SPC MD       -   388,220.22  1,559,243.20   sFT  0.99995309   +0 32 35.7
 HV6033;UTM  18      - 4,287,364.718   401,390.312   MT  0.99971974   -0 42 35.4
 HV6033
 HV6033!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6033!SPC MD       -   1.00000547  x   0.99995309  =   0.99995856
 HV6033!UTM  18      -   1.00000547  x   0.99971974  =   0.99972521
 HV6033
 HV6033_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0139087364(NAD 83)
 HV6033
 HV6033                          SUPERSEDED SURVEY CONTROL
 HV6033
 HV6033  NAD 83(1986)-  38 43 46.01079(N)    076 08 04.08796(W) AD(       ) 3
 HV6033  NAD 27      -  38 43 45.56800(N)    076 08 05.32100(W) AD(       ) 3
 HV6033  USSD        -  38 43 45.97000(N)    076 08 05.11800(W) AD(       ) 3
 HV6033
 HV6033.Superseded values are not recommended for survey control.
 HV6033
 HV6033.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6033.See file dsdata.pdf to determine how the superseded data were derived.
 HV6033
 HV6033_MARKER: 86 = CUPOLA
 HV6033
 HV6033  HISTORY     - Date     Condition        Report By
 HV6033  HISTORY     - 1910     FIRST OBSERVED   MDSFC
 HV6033  HISTORY     - 1939     GOOD             CGS
 HV6033  HISTORY     - 1973     GOOD             MDDNR
 HV6033
 HV6033                          STATION DESCRIPTION
 HV6033
 HV6033'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6033'ON THE SOUTHEASTERN SHORE OF TRED AVON RIVER, ABOUT 1/2 MILE E OF
 HV6033'DOUBLE MILLS WHARF.  STATION IS SPINDLE ON CUPOLA OF LARGEST BARN.
 HV6033
 HV6033                          STATION RECOVERY (1939)
 HV6033
 HV6033'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV6033'STATION IS SPINDLE ON CUPOLA ON LARGEST BARN AT A FARM ON THE
 HV6033'SOUTHEASTERN SHORE OF TRED AVON RIVER, ABOUT 1/2 MILE E OF DOUBLE
 HV6033'MILLS WHARF.  THERE ARE THREE SUCH BARNS ON THE PLACE.
 HV6033
 HV6033                          STATION RECOVERY (1973)
 HV6033
 HV6033'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV6033'STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.  BARN IS NOW
 HV6033'WHITE WITH BLACK ROOF.  SPINDLE IS ON ROOF OF SQUARE CUPOLA. BARN
 HV6033'IS LARGEST OF 2 WITH CUPOLAS ON THEM AND SETS BACK QUITE FAR FROM
 HV6033'SHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6716 ***********************************************************************
 JV6716  DESIGNATION -  AYERS
 JV6716  PID         -  JV6716
 JV6716  STATE/COUNTY-  MD/HARFORD
 JV6716  COUNTRY     -  US
 JV6716  USGS QUAD   -  NORRISVILLE (2016)
 JV6716
 JV6716                         *CURRENT SURVEY CONTROL
 JV6716  ______________________________________________________________________
 JV6716* NAD 83(2011) POSITION- 39 39 53.43990(N) 076 31 45.54702(W)   ADJUSTED
 JV6716* NAD 83(2011) ELLIP HT-   161.662 (meters)        (06/27/12)   ADJUSTED
 JV6716* NAD 83(2011) EPOCH   -  2010.00
 JV6716* NAVD 88 ORTHO HEIGHT -   194.1   (meters)      637.    (feet) VERTCON3
 JV6716  ______________________________________________________________________
 JV6716  GEOID HEIGHT    -        -32.456 (meters)                     GEOID18
 JV6716  NAD 83(2011) X  -  1,145,326.931 (meters)                     COMP
 JV6716  NAD 83(2011) Y  - -4,781,407.217 (meters)                     COMP
 JV6716  NAD 83(2011) Z  -  4,049,512.306 (meters)                     COMP
 JV6716  LAPLACE CORR    -         -2.93  (seconds)                    DEFLEC18
 JV6716
 JV6716  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6716  Standards:
 JV6716         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6716            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6716  -------------------------------------------------------------------
 JV6716  NETWORK    1.30   4.25           0.52   0.51   2.17      0.43240997
 JV6716  -------------------------------------------------------------------
 JV6716  Click here for local accuracies and other accuracy information.
 JV6716
 JV6716.The horizontal coordinates were established by GPS observations
 JV6716.and adjusted by the National Geodetic Survey in June 2012.
 JV6716
 JV6716.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6716.been affixed to the stable North American tectonic plate. See 
 JV6716.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6716
 JV6716.The horizontal coordinates are valid at the epoch date displayed above
 JV6716.which is a decimal equivalence of Year/Month/Day.
 JV6716
 JV6716.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6716.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6716
 JV6716.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6716.GEOID18 height accuracy estimate available here.
 JV6716
 JV6716.Click photographs - Photos may exist for this station.
 JV6716
 JV6716.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6716
 JV6716.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6716
 JV6716.The ellipsoidal height was determined by GPS observations
 JV6716.and is referenced to NAD 83.
 JV6716
 JV6716. The following values were computed from the NAD 83(2011) position.
 JV6716
 JV6716;                    North         East     Units Scale Factor Converg.
 JV6716;SPC MD       -   221,921.635   440,390.738   MT  1.00004465   +0 17 43.5
 JV6716;SPC MD       -   728,087.90  1,444,848.61   sFT  1.00004465   +0 17 43.5
 JV6716;UTM  18      - 4,391,676.928   368,818.924   MT  0.99981186   -0 58 34.7
 JV6716
 JV6716!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6716!SPC MD       -   0.99997464  x   1.00004465  =   1.00001929
 JV6716!UTM  18      -   0.99997464  x   0.99981186  =   0.99978650
 JV6716
 JV6716:                Primary Azimuth Mark                     Grid Az
 JV6716:SPC MD       -  AYERS AZ MK                              162 22 45.6
 JV6716:UTM  18      -  AYERS AZ MK                              163 39 03.8
 JV6716
 JV6716_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6881891676(NAD 83)
 JV6716
 JV6716|---------------------------------------------------------------------|
 JV6716| PID    Reference Object                     Distance      Geod. Az  |
 JV6716|                                                           dddmmss.s |
 JV6716| JV6717 AYERS AZ MK                         APPROX. 0.6 KM 1624029.1 |
 JV6716|---------------------------------------------------------------------|
 JV6716
 JV6716                          SUPERSEDED SURVEY CONTROL
 JV6716
 JV6716  NAD 83(2007)-  39 39 53.44015(N)    076 31 45.54770(W) AD(2002.00) 0
 JV6716  ELLIP H (02/10/07)  161.679  (m)                       GP(2002.00)    
 JV6716  ELLIP H (09/18/02)  161.685  (m)                       GP(       ) 4 2
 JV6716  NAD 83(1991)-  39 39 53.44040(N)    076 31 45.54616(W) AD(       ) 1
 JV6716  ELLIP H (01/27/92)  161.676  (m)                       GP(       ) 4 1
 JV6716  NAD 83(1986)-  39 39 53.43311(N)    076 31 45.55128(W) AD(       ) 1
 JV6716  NGVD 29 (06/18/91)  194.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6716
 JV6716.Superseded values are not recommended for survey control.
 JV6716
 JV6716.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6716.See file dsdata.pdf to determine how the superseded data were derived.
 JV6716
 JV6716_MARKER: DD = SURVEY DISK
 JV6716_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6716_STAMPING: 102 AYERS 1989
 JV6716_MARK LOGO: MD-025
 JV6716_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6716_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6716+STABILITY: SURFACE MOTION
 JV6716_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6716+SATELLITE: SATELLITE OBSERVATIONS - July 23, 2009
 JV6716
 JV6716  HISTORY     - Date     Condition        Report By
 JV6716  HISTORY     - 1989     MONUMENTED       RDA
 JV6716  HISTORY     - 20090723 GOOD             JARICE
 JV6716
 JV6716                          STATION DESCRIPTION
 JV6716
 JV6716'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6716'THE STATION IS LOCATED IN NORTH WESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6716'2.5 MILES SOUTH OF THE VILLAGE OF NORRISVILLE.
 JV6716'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 146 ,
 JV6716'STATE HIGHWAY 23 AND MADONNA ROAD IN THE VILLAGE OF MADONNA PROCEED
 JV6716'NORTH ALONG MADONNA ROAD 0.41 MILES TO ITS INTERSECTION WITH HARFORD
 JV6716'CREAMERY ROAD.  TURN LEFT AND PROCEED NORTH ALONG HARFORD CREAMERY
 JV6716'ROAD 3.48 MILES TO ITS INTERSECTION WITH AYRES CHAPEL ROAD AND THE
 JV6716'STATION ON THE LEFT IN THE SOUTHWEST CORNER OF THE INTERSECTION.
 JV6716'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6716'ABOUT 1 INCH BELOW GROUND STAMPED 102 AYERS 1989.  THE STATION IS 41.6
 JV6716'FEET SOUTHWEST OF THE CENTERLINE OF HARFORD CREAMERY ROAD, 21.6 FEET
 JV6716'SOUTHWEST OF A STOP SIGN AND 18.0 FEET SOUTHEAST OF THE CENTERLINE OF
 JV6716'AYERS CHAPEL ROAD.
 JV6716
 JV6716                          STATION RECOVERY (2009)
 JV6716
 JV6716'RECOVERY NOTE BY J A RICE INC 2009 (JWB)
 JV6716'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6717 ***********************************************************************
 JV6717  DESIGNATION -  AYERS AZ MK
 JV6717  PID         -  JV6717
 JV6717  STATE/COUNTY-  MD/HARFORD
 JV6717  COUNTRY     -  US
 JV6717  USGS QUAD   -  NORRISVILLE (2016)
 JV6717
 JV6717                         *CURRENT SURVEY CONTROL
 JV6717  ______________________________________________________________________
 JV6717* NAD 83(2011) POSITION- 39 39 34.45445(N) 076 31 37.88461(W)   ADJUSTED
 JV6717* NAD 83(2011) ELLIP HT-   168.617 (meters)        (06/27/12)   ADJUSTED
 JV6717* NAD 83(2011) EPOCH   -  2010.00
 JV6717* NAVD 88 ORTHO HEIGHT -   201.1   (meters)      660.    (feet) VERTCON3
 JV6717  ______________________________________________________________________
 JV6717  GEOID HEIGHT    -        -32.456 (meters)                     GEOID18
 JV6717  NAD 83(2011) X  -  1,145,592.873 (meters)                     COMP
 JV6717  NAD 83(2011) Y  - -4,781,733.321 (meters)                     COMP
 JV6717  NAD 83(2011) Z  -  4,049,065.977 (meters)                     COMP
 JV6717  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 JV6717
 JV6717  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6717  Standards:
 JV6717         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6717            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6717  -------------------------------------------------------------------
 JV6717  NETWORK    1.53   4.98           0.58   0.63   2.54      0.43740348
 JV6717  -------------------------------------------------------------------
 JV6717  Click here for local accuracies and other accuracy information.
 JV6717
 JV6717.The horizontal coordinates were established by GPS observations
 JV6717.and adjusted by the National Geodetic Survey in June 2012.
 JV6717
 JV6717.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6717.been affixed to the stable North American tectonic plate. See 
 JV6717.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6717
 JV6717.The horizontal coordinates are valid at the epoch date displayed above
 JV6717.which is a decimal equivalence of Year/Month/Day.
 JV6717
 JV6717.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6717.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6717
 JV6717.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6717.GEOID18 height accuracy estimate available here.
 JV6717
 JV6717.Click photographs - Photos may exist for this station.
 JV6717
 JV6717.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6717
 JV6717.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6717
 JV6717.The ellipsoidal height was determined by GPS observations
 JV6717.and is referenced to NAD 83.
 JV6717
 JV6717. The following values were computed from the NAD 83(2011) position.
 JV6717
 JV6717;                    North         East     Units Scale Factor Converg.
 JV6717;SPC MD       -   221,337.028   440,576.418   MT  1.00004339   +0 17 48.3
 JV6717;SPC MD       -   726,169.90  1,445,457.80   sFT  1.00004339   +0 17 48.3
 JV6717;UTM  18      - 4,391,088.481   368,991.545   MT  0.99981131   -0 58 29.4
 JV6717
 JV6717!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6717!SPC MD       -   0.99997355  x   1.00004339  =   1.00001694
 JV6717!UTM  18      -   0.99997355  x   0.99981131  =   0.99978486
 JV6717
 JV6717:                Primary Azimuth Mark                     Grid Az
 JV6717:SPC MD       -  AYERS                                    342 22 45.7
 JV6717:UTM  18      -  AYERS                                    343 39 03.4
 JV6717
 JV6717_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6899191088(NAD 83)
 JV6717
 JV6717|---------------------------------------------------------------------|
 JV6717| PID    Reference Object                     Distance      Geod. Az  |
 JV6717|                                                           dddmmss.s |
 JV6717| JV6716 AYERS                               APPROX. 0.6 KM 3424034.0 |
 JV6717|---------------------------------------------------------------------|
 JV6717
 JV6717                          SUPERSEDED SURVEY CONTROL
 JV6717
 JV6717  NAD 83(2007)-  39 39 34.45470(N)    076 31 37.88530(W) AD(2002.00) 0
 JV6717  ELLIP H (02/10/07)  168.635  (m)                       GP(2002.00)    
 JV6717  ELLIP H (09/18/02)  168.639  (m)                       GP(       ) 4 2
 JV6717  NAD 83(1991)-  39 39 34.45495(N)    076 31 37.88377(W) AD(       ) 1
 JV6717  ELLIP H (01/27/92)  168.631  (m)                       GP(       ) 4 1
 JV6717  NAD 83(1986)-  39 39 34.44766(N)    076 31 37.88886(W) AD(       ) 1
 JV6717  NGVD 29 (06/18/91)  201.3    (m)  UNKNOWN  model used  GPS OBS        
 JV6717
 JV6717.Superseded values are not recommended for survey control.
 JV6717
 JV6717.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6717.See file dsdata.pdf to determine how the superseded data were derived.
 JV6717
 JV6717_MARKER: DZ = AZIMUTH MARK DISK
 JV6717_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6717_STAMPING: 102 AYERS 1989
 JV6717_MARK LOGO: MD-025
 JV6717_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6717_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6717+STABILITY: SURFACE MOTION
 JV6717_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6717+SATELLITE: SATELLITE OBSERVATIONS - July 23, 2009
 JV6717
 JV6717  HISTORY     - Date     Condition        Report By
 JV6717  HISTORY     - 1989     MONUMENTED       RDA
 JV6717  HISTORY     - 20090723 GOOD             JARICE
 JV6717
 JV6717                          STATION DESCRIPTION
 JV6717
 JV6717'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6717'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTH ALONG HARFORD
 JV6717'CREAMERY ROAD 0.38 MILES TO THE MARK ON THE RIGHT.
 JV6717'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6717'ABOUT 1 INCH BELOW GROUND STAMPED 102 AYERS 1989.  THE MARK IS 6.0
 JV6717'FEET NORTHWEST OF G AND E POWER POLE NUMBER 237344, 15.5 FEET
 JV6717'SOUTHWEST OF THE CENTERLINE OF HARFORD CREAMERY ROAD, AND 52.5 FEET
 JV6717'NORTHWEST OF A BARBED WIRE FENCE CORNER AND 2012.38 FEET FROM THE
 JV6717'STATION.
 JV6717
 JV6717                          STATION RECOVERY (2009)
 JV6717
 JV6717'RECOVERY NOTE BY J A RICE INC 2009 (JWB)
 JV6717'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7545 ***********************************************************************
 HV7545  DESIGNATION -  AZU
 HV7545  PID         -  HV7545
 HV7545  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7545  COUNTRY     -  US
 HV7545  USGS QUAD   -  ANACOSTIA (2016)
 HV7545
 HV7545                         *CURRENT SURVEY CONTROL
 HV7545  ______________________________________________________________________
 HV7545* NAD 83(1993) POSITION- 38 48 52.06083(N) 076 54 49.23899(W)   ADJUSTED
 HV7545* NAVD 88 ORTHO HEIGHT -    81.    (meters)      266.    (feet) SCALED
 HV7545  ______________________________________________________________________
 HV7545  GEOID HEIGHT    -        -32.441 (meters)                     GEOID18
 HV7545  LAPLACE CORR    -         -4.28  (seconds)                    DEFLEC18
 HV7545  HORZ ORDER      -  SECOND
 HV7545
 HV7545.The horizontal coordinates were established by classical geodetic methods
 HV7545.and adjusted by the National Geodetic Survey in November 1994.
 HV7545
 HV7545.The orthometric height was scaled from a topographic map.
 HV7545
 HV7545.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7545.GEOID18 height accuracy estimate available here.
 HV7545
 HV7545.Click photographs - Photos may exist for this station.
 HV7545
 HV7545.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7545
 HV7545. The following values were computed from the NAD 83(1993) position.
 HV7545
 HV7545;                    North         East     Units Scale Factor Converg.
 HV7545;SPC MD       -   127,413.438   407,496.925   MT  0.99995042   +0 03 15.0
 HV7545;SPC MD       -   418,022.25  1,336,929.49   sFT  0.99995042   +0 03 15.0
 HV7545;UTM  18      - 4,297,927.004   333,852.718   MT  0.99993993   -1 11 59.2
 HV7545
 HV7545!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7545!SPC MD       -   0.99999242  x   0.99995042  =   0.99994284
 HV7545!UTM  18      -   0.99999242  x   0.99993993  =   0.99993235
 HV7545
 HV7545_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3385297927(NAD 83)
 HV7545
 HV7545                          SUPERSEDED SURVEY CONTROL
 HV7545
 HV7545  NAD 83(1991)-  38 48 52.05999(N)    076 54 49.23953(W) AD(       ) 2
 HV7545  NAD 83(1986)-  38 48 52.05888(N)    076 54 49.25209(W) AD(       ) 2
 HV7545  NAD 27      -  38 48 51.65144(N)    076 54 50.34643(W) AD(       ) 2
 HV7545
 HV7545.Superseded values are not recommended for survey control.
 HV7545
 HV7545.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7545.See file dsdata.pdf to determine how the superseded data were derived.
 HV7545
 HV7545_MARKER: DS = TRIANGULATION STATION DISK
 HV7545_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7545_STAMPING: AZU 1958
 HV7545_MARK LOGO: CGS
 HV7545_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7545+STABILITY: SURFACE MOTION
 HV7545
 HV7545  HISTORY     - Date     Condition        Report By
 HV7545  HISTORY     - 1958     MONUMENTED       CGS
 HV7545
 HV7545                          STATION DESCRIPTION
 HV7545
 HV7545'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7545'STATION IS LOCATED ABOUT 7 MILES SOUTHEAST OF THE CENTER OF
 HV7545'WASHINGTON, D.C. BETWEEN TWO LANES OF TRAFFIC ON STATE HIGHWAY
 HV7545'NO. 5 (EAST LANE HAS NOT BEEN PAVED YET) AND ABOUT 0.6 MILE
 HV7545'SOUTH-SOUTHEAST OF STATION AUTH.  THE STATION IS 42 FEET NORTHEAST
 HV7545'OF THE CENTERLINE OF EAST STATE HIGHWAY NO. 5 AND 102 FEET
 HV7545'SOUTHEAST OF DRAIN-STORM-SEWER.  THE MARK IS SET FLUSH WITH THE
 HV7545'SURFACE OF THE GROUND AND THE DISK IS STAMPED AZU 1958.
 HV7545'
 HV7545'TO REACH FROM THE JUNCTION OF STATE HIGHWAY NO. 5 AND STATE
 HV7545'HIGHWAY NO. 414, (SOUTHEAST OF WASHINGTON, D.C.), GO SOUTHEAST ON
 HV7545'STATE HIGHWAY NO. 5 (BRANCH AVENUE) FOR 1.25 MILES TO AUTH ROAD
 HV7545'LEFT, CONTINUE SOUTHEAST ON STATE HIGHWAY NO. 5 FOR 0.05 MILES TO
 HV7545'STATION AUTH ON LEFT, CONTINUE SOUTHEAST ON STATE HIGHWAY NO. 5
 HV7545'FOR 0.55 MILE TO STATION AZU ON LEFT AS DESCRIBED.
 HV7545'
 HV7545'STATION AUTH IS VG AND MAY BE USED AS AZIMUTH MARK.
 HV7545'
 HV7545'THIS STATION IS AN UNOCCUPIED TRAVERSE STATION AND WAS CONNECTED
 HV7545'BY TELLUROMETER TRAVERSE TO STATION AUTH 1958.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3939 ***********************************************************************
 JU3939  DESIGNATION -  B
 JU3939  PID         -  JU3939
 JU3939  STATE/COUNTY-  MD/CECIL
 JU3939  COUNTRY     -  US
 JU3939  USGS QUAD   -  NORTH EAST (2016)
 JU3939
 JU3939                         *CURRENT SURVEY CONTROL
 JU3939  ______________________________________________________________________
 JU3939* NAD 83(1991) POSITION- 39 31 19.98632(N) 075 53 29.03287(W)   ADJUSTED
 JU3939* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3939  ______________________________________________________________________
 JU3939  GEOID HEIGHT    -        -33.298 (meters)                     GEOID18
 JU3939  LAPLACE CORR    -         -1.14  (seconds)                    DEFLEC18
 JU3939  HORZ ORDER      -  THIRD
 JU3939
 JU3939.The horizontal coordinates were established by classical geodetic methods
 JU3939.and adjusted by the National Geodetic Survey in January 1992.
 JU3939
 JU3939.The orthometric height was scaled from a topographic map.
 JU3939
 JU3939.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3939.GEOID18 height accuracy estimate available here.
 JU3939
 JU3939.Click photographs - Photos may exist for this station.
 JU3939
 JU3939.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3939
 JU3939. The following values were computed from the NAD 83(1991) position.
 JU3939
 JU3939;                    North         East     Units Scale Factor Converg.
 JU3939;SPC MD       -   206,560.551   495,323.217   MT  1.00001343   +0 41 44.9
 JU3939;SPC MD       -   677,690.74  1,625,072.92   sFT  1.00001343   +0 41 44.9
 JU3939;UTM  18      - 4,375,109.627   423,382.290   MT  0.99967227   -0 34 02.3
 JU3939
 JU3939!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3939!SPC MD       -   1.00000510  x   1.00001343  =   1.00001853
 JU3939!UTM  18      -   1.00000510  x   0.99967227  =   0.99967737
 JU3939
 JU3939:                Primary Azimuth Mark                     Grid Az
 JU3939:SPC MD       -  COURT 2                                  149 05 07.0
 JU3939:UTM  18      -  COURT 2                                  150 20 54.2
 JU3939
 JU3939_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2338275109(NAD 83)
 JU3939
 JU3939|---------------------------------------------------------------------|
 JU3939| PID    Reference Object                     Distance      Geod. Az  |
 JU3939|                                                           dddmmss.s |
 JU3939| JU3945 TOWN POINT CHANNEL E R RNG LT       APPROX. 1.3 KM 1483031.0 |
 JU3939| JU3922 COURTHOUSE POINT LIGHT              APPROX. 1.1 KM 1491811.3 |
 JU3939| JU3925 COURT 2                             APPROX. 1.1 KM 1494651.9 |
 JU3939| JU3944 TOWN POINT CHANNEL E FT RNG LT      APPROX. 1.2 KM 1542224.6 |
 JU3939| CB1201 B RM 1                               10.700 METERS 26001     |
 JU3939| CB1202 B RM 2                               19.507 METERS 35257     |
 JU3939|---------------------------------------------------------------------|
 JU3939
 JU3939                          SUPERSEDED SURVEY CONTROL
 JU3939
 JU3939  NAD 83(1986)-  39 31 19.97904(N)    075 53 29.04069(W) AD(       ) 3
 JU3939  NAD 27      -  39 31 19.57900(N)    075 53 30.26300(W) AD(       ) 3
 JU3939
 JU3939.Superseded values are not recommended for survey control.
 JU3939
 JU3939.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3939.See file dsdata.pdf to determine how the superseded data were derived.
 JU3939
 JU3939_MARKER: DD = SURVEY DISK
 JU3939_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3939_MARK LOGO: USACE
 JU3939_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3939+STABILITY: SURFACE MOTION
 JU3939
 JU3939  HISTORY     - Date     Condition        Report By
 JU3939  HISTORY     - 1937     MONUMENTED       USACE
 JU3939  HISTORY     - 1938     GOOD             CGS
 JU3939  HISTORY     - 1953     MARK NOT FOUND   USGS
 JU3939  HISTORY     - 1984     MARK NOT FOUND   USPSQD
 JU3939
 JU3939                          STATION DESCRIPTION
 JU3939
 JU3939'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3939'LOCATED ON THE N SIDE OF ELK RIVER ON BULL MINNOW POINT.  IT IS
 JU3939'6.2 METERS INSHORE FROM HIGH WATER AND 8.7 METERS ESE FROM
 JU3939'BUSHY TREE.  THE STATION IS MARKED BY A STANDARD U.S.E. DISK
 JU3939'STAMPED B SET ATOP A 6-INCH SQUARE CONCRETE POST.  THE REFERENCE
 JU3939'MARKS ARE STANDARD U.S.E. DISKS SET ATOP CONCRETE POSTS.
 JU3939
 JU3939                          STATION RECOVERY (1938)
 JU3939
 JU3939'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3939'STATION MARK AND REFERENCE MARK NO.1 RECOVERED IN GOOD CONDITION.
 JU3939'
 JU3939'STATION IS LOCATED 4-1/2 MILES W OF CHESAPEAKE CITY ON W SIDE
 JU3939'OF ELK RIVER, OPPOSITE THE MOUTH OF BACK CREEK, ON A PROMINENT
 JU3939'BRUSH AND GRASS-COVERED SAND POINT KNOWN AS BULL MINNOW POINT.
 JU3939'
 JU3939'STATION MARK IS 22 METERS ESE OF A 5-FOOT BLUFF AT THE EDGE OF
 JU3939'CULTIVATED FIELD, 8.7 METERS ESE OF LONE 6-INCH BUSHY TREE AND
 JU3939'6.2 METERS FROM HIGH-WATER LINE.
 JU3939'
 JU3939'THE MARK IS A STANDARD U.S.E. DISK ATOP A 6-INCH SQUARE CONCRETE
 JU3939'POST AND PROJECTING 4 INCHES ABOVE GROUND.
 JU3939'
 JU3939'REFERENCE MARK NO.1 IS 10.70 METERS SW OF THE STATION MARK,
 JU3939'ABOUT 2 METERS N OF THE RUINS OF AN OLD DUCKING BLIND.  THE MARK
 JU3939'IS A STANDARD U.S.E. REFERENCE DISK ATOP A 6-INCH SQUARE CONCRETE
 JU3939'POST PROJECTING 4 INCHES ABOVE THE GROUND.  REFERENCE MARK NO.2
 JU3939'WAS NOT RECOVERED.
 JU3939'
 JU3939'TO REACH THE STATION FROM THE COURTHOUSE IN ELKTON FOLLOW
 JU3939'U.S. HIGHWAY 40 W, 0.5 MILE TO A TRAFFIC LIGHT.  TURN LEFT, FOLLOW
 JU3939'ROAD 0.5 MILE AND TURN RIGHT ONTO A TAR ROAD TO ELK NECK.  FOLLOW
 JU3939'ROAD FOR 6.6 MILES TO HOUSE, ON RIGHT.  JUST PASS THE HOUSE AND
 JU3939'TURN LEFT ONTO PRIVATE LANE FOR 0.3 MILE.  TURN LEFT FOR 0.2
 JU3939'MILE TO HOUSE AND BARN.  TURN RIGHT PASSING BETWEEN HOUSE AND
 JU3939'BARN AND FOLLOW LANE 0.2 MILE.  PASS THROUGH GATE ON LEFT AND
 JU3939'FOLLOW LANE ALONG S AND E SIDES OF CULTIVATED FIELD TO THE
 JU3939'SAND POINT AND STATION.
 JU3939
 JU3939                          STATION RECOVERY (1953)
 JU3939
 JU3939'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JU3939'STATION WAS NOT FOUND BUT PROBABLY IS O.K.  REFERENCE MARK 1 IS O.K.
 JU3939'
 JU3939'DESCRIPTION AND REFERENCES INDICATE THAT THE SHORE HAS BEEN
 JU3939'WASHED AT THIS POINT, HIGH WATER APPEARS TO COVER THE POSITION OF
 JU3939'B AS DESCRIBED, AT PRESENT.  A TARGET IS NOW ERECTED AT THE
 JU3939'POSITION OF THE MONUMENT, BUT THE MONUMENT COULD NOT BE RECOVERED
 JU3939'BECAUSE OF HIGH WATER AND SAND.
 JU3939
 JU3939                          STATION RECOVERY (1984)
 JU3939
 JU3939'RECOVERY NOTE BY US POWER SQUADRON 1984 (AHJ)
 JU3939'STATION MARK AND REFERENCE MARKS COULD NOT BE FOUND.  GROUND WHERE
 JU3939'MARKS WERE LOCATED HAS ERODED AWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0817 ***********************************************************************
 HV0817  DESIGNATION -  B 1
 HV0817  PID         -  HV0817
 HV0817  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0817  COUNTRY     -  US
 HV0817  USGS QUAD   -  BRANDYWINE (2016)
 HV0817
 HV0817                         *CURRENT SURVEY CONTROL
 HV0817  ______________________________________________________________________
 HV0817* NAD 83(1986) POSITION- 38 44 05.77   (N) 076 49 25.46   (W)   HD_HELD1
 HV0817* NAVD 88 ORTHO HEIGHT -    72.128 (meters)      236.64  (feet) ADJUSTED
 HV0817  ______________________________________________________________________
 HV0817  GEOID HEIGHT    -        -32.873 (meters)                     GEOID18
 HV0817  DYNAMIC HEIGHT  -         72.086 (meters)      236.50  (feet) COMP
 HV0817  MODELED GRAVITY -    980,053.8   (mgal)                       NAVD 88
 HV0817
 HV0817  VERT ORDER      -  FIRST     CLASS II
 HV0817
 HV0817.The horizontal coordinates were determined by differentially corrected
 HV0817.hand held GPS observations or other comparable positioning techniques
 HV0817.and have an estimated accuracy of +/- 3 meters.
 HV0817
 HV0817.The orthometric height was determined by differential leveling and
 HV0817.adjusted by the NATIONAL GEODETIC SURVEY
 HV0817.in June 1991.
 HV0817
 HV0817.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0817.GEOID18 height accuracy estimate available here.
 HV0817
 HV0817.Click photographs - Photos may exist for this station.
 HV0817
 HV0817.The dynamic height is computed by dividing the NAVD 88
 HV0817.geopotential number by the normal gravity value computed on the
 HV0817.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0817.degrees latitude (g = 980.6199 gals.).
 HV0817
 HV0817.The modeled gravity was interpolated from observed gravity values.
 HV0817
 HV0817;                    North         East    Units  Estimated Accuracy
 HV0817;SPC MD       -   118,596.9     415,324.9     MT  (+/- 3 meters HH1 GPS) 
 HV0817
 HV0817_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4148588941(NAD 83)
 HV0817
 HV0817                          SUPERSEDED SURVEY CONTROL
 HV0817
 HV0817  NGVD 29 (11/26/84)   72.359  (m)          237.40   (f) ADJUSTED    1 2
 HV0817
 HV0817.Superseded values are not recommended for survey control.
 HV0817
 HV0817.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0817.See file dsdata.pdf to determine how the superseded data were derived.
 HV0817
 HV0817_MARKER: DB = BENCH MARK DISK
 HV0817_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0817_STAMPING: B 1 1917
 HV0817_MARK LOGO: CGS
 HV0817_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0817+STABILITY: SURFACE MOTION
 HV0817
 HV0817  HISTORY     - Date     Condition        Report By
 HV0817  HISTORY     - 1917     MONUMENTED       CGS
 HV0817  HISTORY     - 1971     GOOD             NGS
 HV0817  HISTORY     - 1975     GOOD             NGS
 HV0817
 HV0817                          STATION DESCRIPTION
 HV0817
 HV0817'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0817'1.8 MI SW FROM ROSARYVILLE.
 HV0817'ABOUT 1.65 MILES SOUTHWEST ALONG U.S. HIGHWAY 301 FROM THE
 HV0817'INTERSECTION OF ROSARYVILLE ROAD AND INDIAN HEAD ROAD AT ROSARYVILLE,
 HV0817'THENCE 0.1 MILE SOUTHEAST ALONG A GRAVEL ROAD, ABOUT 330 FEET
 HV0817'NORTHEAST OF THE CENTER LINE OF THE RAILROAD TRACK AND THE
 HV0817'GRAVEL ROAD CROSSING, 53 1/2 FEET NORTHEAST OF MILEPOST 22, 21.4
 HV0817'FEET SOUTHEAST OF THE SOUTHEAST RAIL, 1.3 FEET NORTHEAST OF A
 HV0817'METAL WITNESS POST ABOUT LEVEL WITH THE SOUTHEAST TRACK AND SET
 HV0817'IN THE TOP OF A CONCRETE POST PROJECTING 8 INCHES ABOVE THE LEVEL
 HV0817'OF THE GROUND.
 HV0817
 HV0817                          STATION RECOVERY (1975)
 HV0817
 HV0817'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0817'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6009 ***********************************************************************
 DN6009  DESIGNATION -  B 10
 DN6009  PID         -  DN6009
 DN6009  STATE/COUNTY-  MD/CARROLL
 DN6009  COUNTRY     -  US
 DN6009  USGS QUAD   -  MANCHESTER (2016)
 DN6009
 DN6009                         *CURRENT SURVEY CONTROL
 DN6009  ______________________________________________________________________
 DN6009* NAD 83(1986) POSITION- 39 38 02.1    (N) 076 59 20.3    (W)   HD_HELD2
 DN6009* NAVD 88 ORTHO HEIGHT -   193.878 (meters)      636.08  (feet) ADJUSTED
 DN6009  ______________________________________________________________________
 DN6009  GEOID HEIGHT    -        -32.412 (meters)                     GEOID18
 DN6009  DYNAMIC HEIGHT  -        193.777 (meters)      635.75  (feet) COMP
 DN6009  MODELED GRAVITY -    980,098.2   (mgal)                       NAVD 88
 DN6009
 DN6009  VERT ORDER      -  SECOND    CLASS II
 DN6009
 DN6009.The horizontal coordinates were established by autonomous hand held GPS
 DN6009.observations and have an estimated accuracy of +/- 10 meters.
 DN6009
 DN6009.The orthometric height was determined by differential leveling and
 DN6009.adjusted by the NATIONAL GEODETIC SURVEY
 DN6009.in June 2012.
 DN6009
 DN6009.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6009.GEOID18 height accuracy estimate available here.
 DN6009
 DN6009.Click photographs - Photos may exist for this station.
 DN6009
 DN6009.The dynamic height is computed by dividing the NAVD 88
 DN6009.geopotential number by the normal gravity value computed on the
 DN6009.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6009.degrees latitude (g = 980.6199 gals.).
 DN6009
 DN6009.The modeled gravity was interpolated from observed gravity values.
 DN6009
 DN6009;                    North         East    Units  Estimated Accuracy
 DN6009;SPC MD       -   218,384.      400,947.      MT  (+/- 10 meters HH2 GPS)
 DN6009
 DN6009_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2931289017(NAD 83)
 DN6009
 DN6009                          SUPERSEDED SURVEY CONTROL
 DN6009
 DN6009.No superseded survey control is available for this station.
 DN6009
 DN6009_MARKER: DD = SURVEY DISK
 DN6009_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 DN6009_SP_SET: BRIDGE WING WALL
 DN6009_STAMPING: B-10 1982
 DN6009_MARK LOGO: MD-013
 DN6009_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DN6009_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DN6009_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DN6009+SATELLITE: SATELLITE OBSERVATIONS - January 29, 2008
 DN6009
 DN6009  HISTORY     - Date     Condition        Report By
 DN6009  HISTORY     - 1982     MONUMENTED       MD-013
 DN6009  HISTORY     - 20080129 GOOD             MDSHA
 DN6009
 DN6009                          STATION DESCRIPTION
 DN6009
 DN6009'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6009'THE MARK IS LOCATED ABOUT 8.9 MI (14.3 KM) NORTHEAST OF NEW WINDSOR,
 DN6009'7.7 MI (12.4 KM) WEST-NORTHWEST OF HAMPSTEAD AND 5.9 MI (9.5 KM)
 DN6009'WEST-SOUTHWEST OF MANCHESTER.
 DN6009'
 DN6009'TO REACH THE MARK FROM THE OVERHEAD BRIDGE OF MARYLAND ROUTE 140 OVER
 DN6009'MARYLAND ROUTE 97 IN THE NORTH MOST END OF WESTMINSTER, GO NORTH ALONG
 DN6009'MARYLAND ROUTE 97 FOR 2.5 MI (4.0 KM) TO ITS JUNCTION WITH MARYLAND
 DN6009'ROUTE 496 ON THE RIGHT LEADING NORTHEAST.  TURN RIGHT AND GO NORTHEAST
 DN6009'ALONG MARYLAND ROUTE 496 FOR 0.8 MI (1.3 KM) TO THE MARK ON THE RIGHT.
 DN6009'IT IS SET IN THE TOP OF AND AT THE NORTHWEST MOST END OF THE NORTHWEST
 DN6009'WING WALL FOR BRIDGE OVER BEAR BRANCH.  IT IS 26.0 FT (7.9 M) NORTH OF
 DN6009'THE CENTERLINE OF MARYLAND ROUTE 496, 32.3 FT (9.8 M) NORTHEAST OF C
 DN6009'AND P POLE NUMBER 16, 2.0 FT (0.6 M) WEST OF A WOODEN POST AND WIRE
 DN6009'FENCE CORNER AND ABOUT 5 FT (1.5 M) LOWER THAN THE ROAD SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0550 ***********************************************************************
 HU0550  DESIGNATION -  B 105
 HU0550  PID         -  HU0550
 HU0550  STATE/COUNTY-  MD/WICOMICO
 HU0550  COUNTRY     -  US
 HU0550  USGS QUAD   -  WETIPQUIN (2016)
 HU0550
 HU0550                         *CURRENT SURVEY CONTROL
 HU0550  ______________________________________________________________________
 HU0550* NAD 83(1986) POSITION- 38 19 16.     (N) 075 45 14.     (W)   SCALED
 HU0550* NAVD 88 ORTHO HEIGHT -     3.533 (meters)       11.59  (feet) ADJUSTED
 HU0550  ______________________________________________________________________
 HU0550  GEOID HEIGHT    -        -35.786 (meters)                     GEOID18
 HU0550  DYNAMIC HEIGHT  -          3.531 (meters)       11.58  (feet) COMP
 HU0550  MODELED GRAVITY -    979,999.8   (mgal)                       NAVD 88
 HU0550
 HU0550  VERT ORDER      -  FIRST     CLASS I
 HU0550
 HU0550.The horizontal coordinates were scaled from a map and have
 HU0550.an estimated accuracy of +/- 6 seconds.
 HU0550
 HU0550.The orthometric height was determined by differential leveling and
 HU0550.adjusted by the NATIONAL GEODETIC SURVEY
 HU0550.in June 1991.
 HU0550
 HU0550.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0550.GEOID18 height accuracy estimate available here.
 HU0550
 HU0550.Click photographs - Photos may exist for this station.
 HU0550
 HU0550.The dynamic height is computed by dividing the NAVD 88
 HU0550.geopotential number by the normal gravity value computed on the
 HU0550.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0550.degrees latitude (g = 980.6199 gals.).
 HU0550
 HU0550.The modeled gravity was interpolated from observed gravity values.
 HU0550
 HU0550;                    North         East    Units  Estimated Accuracy
 HU0550;SPC MD       -    73,390.      508,970.      MT  (+/- 180 meters Scaled)
 HU0550
 HU0550_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH340417(NAD 83)
 HU0550
 HU0550                          SUPERSEDED SURVEY CONTROL
 HU0550
 HU0550  NGVD 29 (11/26/84)    3.787  (m)           12.42   (f) ADJUSTED    1 1
 HU0550
 HU0550.Superseded values are not recommended for survey control.
 HU0550
 HU0550.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0550.See file dsdata.pdf to determine how the superseded data were derived.
 HU0550
 HU0550_MARKER: DB = BENCH MARK DISK
 HU0550_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0550_STAMPING: B 105 1963
 HU0550_MARK LOGO: CGS
 HU0550_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0550_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0550+STABILITY: SURFACE MOTION
 HU0550
 HU0550  HISTORY     - Date     Condition        Report By
 HU0550  HISTORY     - 1963     MONUMENTED       CGS
 HU0550  HISTORY     - 1977     MARK NOT FOUND   USGS
 HU0550
 HU0550                          STATION DESCRIPTION
 HU0550
 HU0550'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0550'4.8 MI NE FROM WHITEHAVEN.
 HU0550'4.8 MILES NORTHEAST ALONG STATE HIGHWAY 352 FROM THE FERRY
 HU0550'LANDING AT WHITEHAVEN, ABOUT 0.15 MILE NORTHEAST OF A PRIVATE ROAD
 HU0550'LEADING SOUTHEAST TO A TWO STORY FRAME HOUSE, 29 FEET SOUTHEAST
 HU0550'OF CENTER LINE OF HIGHWAY, 55 FEET EAST OF SOUTHEAST END OF A
 HU0550'24-INCH PIPE CULVERT UNDER HIGHWAY, 3 FEET SOUTHWEST OF POWER
 HU0550'POLE 57, 1.5 FEET NORTHEAST OF A STEEL WITNESS POST, 1 FOOT ABOVE
 HU0550'THE LEVEL OF HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST
 HU0550'PROJECTING 3 INCHES.
 HU0550
 HU0550                          STATION RECOVERY (1977)
 HU0550
 HU0550'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1977
 HU0550'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2652 ***********************************************************************
 HU2652  DESIGNATION -  B 107 RESET
 HU2652  PID         -  HU2652
 HU2652  STATE/COUNTY-  MD/SOMERSET
 HU2652  COUNTRY     -  US
 HU2652  USGS QUAD   -  DEAL ISLAND (2016)
 HU2652
 HU2652                         *CURRENT SURVEY CONTROL
 HU2652  ______________________________________________________________________
 HU2652* NAD 83(1986) POSITION- 38 11 06.     (N) 075 54 51.     (W)   SCALED
 HU2652* NAVD 88 ORTHO HEIGHT -     0.25  (meters)        0.8   (feet) RESET
 HU2652  ______________________________________________________________________
 HU2652  GEOID HEIGHT    -        -35.806 (meters)                     GEOID18
 HU2652  VERT ORDER      -  THIRD
 HU2652
 HU2652.The horizontal coordinates were scaled from a map and have
 HU2652.an estimated accuracy of +/- 6 seconds.
 HU2652
 HU2652.The orthometric height was computed from unverified reset data.
 HU2652
 HU2652.No vertical observational check was made to the station.
 HU2652
 HU2652.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2652.GEOID18 height accuracy estimate available here.
 HU2652
 HU2652.Click photographs - Photos may exist for this station.
 HU2652
 HU2652;                    North         East    Units  Estimated Accuracy
 HU2652;SPC MD       -    58,100.      495,130.      MT  (+/- 180 meters Scaled)
 HU2652
 HU2652_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH199267(NAD 83)
 HU2652
 HU2652                          SUPERSEDED SURVEY CONTROL
 HU2652
 HU2652  NGVD 29 (11/18/05)    0.51   (m)            1.7    (f) RESET       3  
 HU2652
 HU2652.Superseded values are not recommended for survey control.
 HU2652
 HU2652.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2652.See file dsdata.pdf to determine how the superseded data were derived.
 HU2652
 HU2652_MARKER: I = METAL ROD
 HU2652_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HU2652_STAMPING: B 107 RESET 1987
 HU2652_MARK LOGO: NGS
 HU2652_PROJECTION: FLUSH
 HU2652_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2652_ROD/PIPE-DEPTH: 3.6 meters
 HU2652
 HU2652  HISTORY     - Date     Condition        Report By
 HU2652  HISTORY     - 1987     MONUMENTED       NGS
 HU2652
 HU2652                          STATION DESCRIPTION
 HU2652
 HU2652'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987
 HU2652'1.5 KM (0.95 MI) WEST FROM DAMES QUARTER.
 HU2652'FROM POST OFFICE IN DAMES QUARTER, GO WEST FOR 1.5 KM (0.95 MI) ON
 HU2652'STATE HIGHWAY 363 TO THE MARK ON THE RIGHT, 5.0 M (16.4 FT) NORTHEAST
 HU2652'FROM A POWERLINE POLE NUMBERED 37767-86651, 45.6 M (149.6 FT)
 HU2652'EAST-NORTHEAST FROM THE CENTERLINE OF A CREEK, 11.2 M (36.7 FT)
 HU2652'NORTHWEST FROM THE CENTERLINE OF STATE HIGHWAY 363, AND 86.1 M
 HU2652'(282.5 FT) SOUTHWEST FROM A POWERLINE POLE NUMBERED 37794-8664.
 HU2652'NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP.
 HU2652'THE MARK IS 0.3 METERS  SE FROM  A WITNESS POST
 HU2652'THE MARK IS 0.8 M BELOW HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1324 ***********************************************************************
 JV1324  DESIGNATION -  B 109 RESET
 JV1324  PID         -  JV1324
 JV1324  STATE/COUNTY-  MD/HOWARD
 JV1324  COUNTRY     -  US
 JV1324  USGS QUAD   -  SAVAGE (2016)
 JV1324
 JV1324                         *CURRENT SURVEY CONTROL
 JV1324  ______________________________________________________________________
 JV1324* NAD 83(1986) POSITION- 39 12 25.     (N) 076 51 23.     (W)   SCALED
 JV1324* NAVD 88 ORTHO HEIGHT -    91.56  (meters)      300.4   (feet) RESET
 JV1324  ______________________________________________________________________
 JV1324  GEOID HEIGHT    -        -32.184 (meters)                     GEOID18
 JV1324  VERT ORDER      -  THIRD
 JV1324
 JV1324.The horizontal coordinates were scaled from a map and have
 JV1324.an estimated accuracy of +/- 6 seconds.
 JV1324
 JV1324.The orthometric height was computed from unverified reset data.
 JV1324
 JV1324.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1324.GEOID18 height accuracy estimate available here.
 JV1324
 JV1324.Click photographs - Photos may exist for this station.
 JV1324
 JV1324;                    North         East    Units  Estimated Accuracy
 JV1324;SPC MD       -   170,990.      412,400.      MT  (+/- 180 meters Scaled)
 JV1324
 JV1324_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ397413(NAD 83)
 JV1324
 JV1324                          SUPERSEDED SURVEY CONTROL
 JV1324
 JV1324  NGVD 29 (??/??/??)   91.78   (m)          301.1    (f) RESET       3  
 JV1324
 JV1324.Superseded values are not recommended for survey control.
 JV1324
 JV1324.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1324.See file dsdata.pdf to determine how the superseded data were derived.
 JV1324
 JV1324_MARKER: DB = BENCH MARK DISK
 JV1324_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1324_SP_SET: CULVERT
 JV1324_STAMPING: B 109 RESET 1967
 JV1324_MARK LOGO: CGS
 JV1324_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1324
 JV1324  HISTORY     - Date     Condition        Report By
 JV1324  HISTORY     - 1967     MONUMENTED       MDBCSM
 JV1324  HISTORY     - 1986     GOOD             LOCSUR
 JV1324
 JV1324                          STATION DESCRIPTION
 JV1324
 JV1324'DESCRIBED BY MD BUR SURV AND MAPS 1967
 JV1324'2.5 MI S FROM COLUMBIA.
 JV1324'ABOUT 2.5 MILES SOUTH ALONG U.S. HIGHWAY 29 FROM THE INTERSECTION
 JV1324'OF STATE HIGHWAY 108 AT COLUMBIA, SET IN THE SOUTH END OF A
 JV1324'CONCRETE CULVERT, 30 FEET NORTHWEST OF THE CENTER LINE OF U.S.
 JV1324'HIGHWAY 29, 321.5 FEET NORTHEAST OF THE CENTER LINE OF RIVER
 JV1324'MEADOW DRIVE, 1 FOOT WEST OF A METAL WITNESS POST.
 JV1324
 JV1324                          STATION RECOVERY (1986)
 JV1324
 JV1324'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1986 (JRD)
 JV1324'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1191 ***********************************************************************
 JU1191  DESIGNATION -  B 11
 JU1191  PID         -  JU1191
 JU1191  STATE/COUNTY-  MD/QUEEN ANNES
 JU1191  COUNTRY     -  US
 JU1191  USGS QUAD   -  SUDLERSVILLE (2017)
 JU1191
 JU1191                         *CURRENT SURVEY CONTROL
 JU1191  ______________________________________________________________________
 JU1191* NAD 83(1986) POSITION- 39 14 23.     (N) 075 50 43.     (W)   SCALED
 JU1191* NAVD 88 ORTHO HEIGHT -    14.178 (meters)       46.52  (feet) ADJUSTED
 JU1191  ______________________________________________________________________
 JU1191  GEOID HEIGHT    -        -33.672 (meters)                     GEOID18
 JU1191  DYNAMIC HEIGHT  -         14.171 (meters)       46.49  (feet) COMP
 JU1191  MODELED GRAVITY -    980,108.3   (mgal)                       NAVD 88
 JU1191
 JU1191  VERT ORDER      -  SECOND    CLASS 0
 JU1191
 JU1191.The horizontal coordinates were scaled from a map and have
 JU1191.an estimated accuracy of +/- 6 seconds.
 JU1191
 JU1191.The orthometric height was determined by differential leveling and
 JU1191.adjusted by the NATIONAL GEODETIC SURVEY
 JU1191.in June 1991.
 JU1191
 JU1191.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1191.GEOID18 height accuracy estimate available here.
 JU1191
 JU1191.Click photographs - Photos may exist for this station.
 JU1191
 JU1191.The dynamic height is computed by dividing the NAVD 88
 JU1191.geopotential number by the normal gravity value computed on the
 JU1191.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1191.degrees latitude (g = 980.6199 gals.).
 JU1191
 JU1191.The modeled gravity was interpolated from observed gravity values.
 JU1191
 JU1191;                    North         East    Units  Estimated Accuracy
 JU1191;SPC MD       -   175,250.      499,690.      MT  (+/- 180 meters Scaled)
 JU1191
 JU1191_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ270437(NAD 83)
 JU1191
 JU1191                          SUPERSEDED SURVEY CONTROL
 JU1191
 JU1191  NGVD 29 (11/26/84)   14.420  (m)           47.31   (f) ADJUSTED    2 0
 JU1191
 JU1191.Superseded values are not recommended for survey control.
 JU1191
 JU1191.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1191.See file dsdata.pdf to determine how the superseded data were derived.
 JU1191
 JU1191_MARKER: DB = BENCH MARK DISK
 JU1191_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1191_STAMPING: B 11 1935
 JU1191_MARK LOGO: CGS
 JU1191_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1191+STABILITY: SURFACE MOTION
 JU1191
 JU1191  HISTORY     - Date     Condition        Report By
 JU1191  HISTORY     - 1935     MONUMENTED       CGS
 JU1191  HISTORY     - 1964     GOOD             CGS
 JU1191  HISTORY     - 20041026 MARK NOT FOUND   USPSQD
 JU1191
 JU1191                          STATION DESCRIPTION
 JU1191
 JU1191'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1191'1.5 MI S FROM MILLINGTON.
 JU1191'1.5 MILES SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JU1191'STATION AT MILLINGTON, AND AT A ROAD CROSSING.  28.5 FEET
 JU1191'SOUTHEAST OF A POWER LINE BRACE POLE, 26.5 FEET EAST OF
 JU1191'CENTER OF ROAD AND RAILROAD CROSSING, 24 FEET EAST OF EAST
 JU1191'RAIL, 3 FEET SOUTHWEST OF FENCE AND 1 FOOT WEST OF THE METAL
 JU1191'WITNESS POST AND SIGN.  A STANDARD DISK IN THE TOP OF A
 JU1191'CONCRETE POST FLUSH WITH THE GROUND.
 JU1191
 JU1191                          STATION RECOVERY (2004)
 JU1191
 JU1191'RECOVERY NOTE BY US POWER SQUADRON 2004 (KN)
 JU1191'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1116 ***********************************************************************
 JV1116  DESIGNATION -  B 110 MDSRC
 JV1116  PID         -  JV1116
 JV1116  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1116  COUNTRY     -  US
 JV1116  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1116
 JV1116                         *CURRENT SURVEY CONTROL
 JV1116  ______________________________________________________________________
 JV1116* NAD 83(1986) POSITION- 39 18 50.     (N) 076 32 18.     (W)   SCALED
 JV1116* NAVD 88 ORTHO HEIGHT -    23.972 (meters)       78.65  (feet) ADJUSTED
 JV1116  ______________________________________________________________________
 JV1116  GEOID HEIGHT    -        -32.861 (meters)                     GEOID18
 JV1116  DYNAMIC HEIGHT  -         23.959 (meters)       78.61  (feet) COMP
 JV1116  MODELED GRAVITY -    980,099.3   (mgal)                       NAVD 88
 JV1116
 JV1116  VERT ORDER      -  FIRST     CLASS II
 JV1116
 JV1116.The horizontal coordinates were scaled from a map and have
 JV1116.an estimated accuracy of +/- 6 seconds.
 JV1116
 JV1116.The orthometric height was determined by differential leveling and
 JV1116.adjusted by the NATIONAL GEODETIC SURVEY
 JV1116.in June 1991.
 JV1116
 JV1116.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1116.GEOID18 height accuracy estimate available here.
 JV1116
 JV1116.Click photographs - Photos may exist for this station.
 JV1116
 JV1116.The dynamic height is computed by dividing the NAVD 88
 JV1116.geopotential number by the normal gravity value computed on the
 JV1116.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1116.degrees latitude (g = 980.6199 gals.).
 JV1116
 JV1116.The modeled gravity was interpolated from observed gravity values.
 JV1116
 JV1116;                    North         East    Units  Estimated Accuracy
 JV1116;SPC MD       -   182,950.      439,810.      MT  (+/- 180 meters Scaled)
 JV1116
 JV1116_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ673527(NAD 83)
 JV1116
 JV1116                          SUPERSEDED SURVEY CONTROL
 JV1116
 JV1116  NGVD 29 (11/26/84)   24.218  (m)           79.46   (f) ADJUSTED    1 2
 JV1116
 JV1116.Superseded values are not recommended for survey control.
 JV1116
 JV1116.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1116.See file dsdata.pdf to determine how the superseded data were derived.
 JV1116
 JV1116_MARKER: DD = SURVEY DISK
 JV1116_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1116_STAMPING: B 110 1965 USCGS
 JV1116_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1116+STABILITY: SURFACE MOTION
 JV1116_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1116+SATELLITE: SATELLITE OBSERVATIONS - July 19, 2002
 JV1116
 JV1116  HISTORY     - Date     Condition        Report By
 JV1116  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1116  HISTORY     - 20020719 GOOD             WR
 JV1116
 JV1116                          STATION DESCRIPTION
 JV1116
 JV1116'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1116'AT ROSEDALE.
 JV1116'FROM THE BALTIMORE BELTWAY AND THE PULASKI HIGHWAY (U.S. 40)
 JV1116'INTERCHANGE GO SOUTHEAST ALONG PULASKI HIGHWAY FOR 3.0 MILES TO
 JV1116'THE INTERSECTION OF MORAVIA ROAD.  THENCE NORTH ALONG MORAVIA ROAD
 JV1116'FOR 0.50 MILES 28.7 FEET NORTHEAST OF THE CENTERLINE OF MORAVIA
 JV1116'ROAD, 20.2 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE MORAVIA
 JV1116'ROAD BRIDGE OVER THE KENNEDY MEMORIAL HIGHWAY, 1.0 FEET NORTHEAST
 JV1116'OF A GUARD RAIL, 59.2 FEET NORTHWEST OF C. AND P. POLE NUMBER 14,
 JV1116'2.0 FEET NORTHEAST OF A METAL WITNESS POST A STANDARD MARYLAND
 JV1116'BUREAU CONTROL SURVEY DISK SET IN THE TOP OF A CONCRETE POST
 JV1116'FLUSH WITH THE GROUND.
 JV1116
 JV1116                          STATION RECOVERY (2002)
 JV1116
 JV1116'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (RTD)
 JV1116'MORAVIA ROAD IS NOW NAMED MORAVIA PARK DRIVE.THE REMAINDER OF THE
 JV1116'DESCRIPTION WILL SUFFICE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1087 ***********************************************************************
 HV1087  DESIGNATION -  B 111
 HV1087  PID         -  HV1087
 HV1087  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1087  COUNTRY     -  US
 HV1087  USGS QUAD   -  PISCATAWAY (2016)
 HV1087
 HV1087                         *CURRENT SURVEY CONTROL
 HV1087  ______________________________________________________________________
 HV1087* NAD 83(1986) POSITION- 38 42 45.     (N) 076 59 24.     (W)   SCALED
 HV1087* NAVD 88 ORTHO HEIGHT -    59.373 (meters)      194.79  (feet) ADJUSTED
 HV1087  ______________________________________________________________________
 HV1087  GEOID HEIGHT    -        -32.495 (meters)                     GEOID18
 HV1087  DYNAMIC HEIGHT  -         59.340 (meters)      194.68  (feet) COMP
 HV1087  MODELED GRAVITY -    980,074.8   (mgal)                       NAVD 88
 HV1087
 HV1087  VERT ORDER      -  SECOND    CLASS 0
 HV1087
 HV1087.The horizontal coordinates were scaled from a map and have
 HV1087.an estimated accuracy of +/- 6 seconds.
 HV1087
 HV1087.The orthometric height was determined by differential leveling and
 HV1087.adjusted by the NATIONAL GEODETIC SURVEY
 HV1087.in June 1991.
 HV1087
 HV1087.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1087.GEOID18 height accuracy estimate available here.
 HV1087
 HV1087.Click photographs - Photos may exist for this station.
 HV1087
 HV1087.The dynamic height is computed by dividing the NAVD 88
 HV1087.geopotential number by the normal gravity value computed on the
 HV1087.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1087.degrees latitude (g = 980.6199 gals.).
 HV1087
 HV1087.The modeled gravity was interpolated from observed gravity values.
 HV1087
 HV1087;                    North         East    Units  Estimated Accuracy
 HV1087;SPC MD       -   116,090.      400,870.      MT  (+/- 180 meters Scaled)
 HV1087
 HV1087_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH269867(NAD 83)
 HV1087
 HV1087                          SUPERSEDED SURVEY CONTROL
 HV1087
 HV1087  NGVD 29 (05/01/89)   59.610  (m)          195.57   (f) ADJUSTED    2 0
 HV1087  NGVD 29 (??/??/87)   59.642  (m)          195.68   (f) SUPERSEDED  2 0
 HV1087
 HV1087.Superseded values are not recommended for survey control.
 HV1087
 HV1087.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1087.See file dsdata.pdf to determine how the superseded data were derived.
 HV1087
 HV1087_MARKER: DD = SURVEY DISK
 HV1087_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1087_STAMPING: B-111 1966 USCGS
 HV1087_MARK LOGO: MDSRC
 HV1087_PROJECTION: FLUSH
 HV1087_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1087+STABILITY: SURFACE MOTION
 HV1087
 HV1087  HISTORY     - Date     Condition        Report By
 HV1087  HISTORY     - 1966     MONUMENTED       MDSRC
 HV1087
 HV1087                          STATION DESCRIPTION
 HV1087
 HV1087'DESCRIBED BY MD STATE ROADS COMM 1966
 HV1087'5 MI S FROM OXON HILL.
 HV1087'FROM OXON HILL MARYLAND, PROCEED SOUTH ALONG MARYLAND STATE
 HV1087'HIGHWAY 210 FOR 5.0 MILES TO THE INTERSECTION OF OLD FORT
 HV1087'ROAD.  STATION IS IN THE SOUTH EAST QUADRANT OF THE INTERSECTION
 HV1087'72.0 FEET EAST OF THE CENTERLINE OF THE NORTH BOUND LANE OF
 HV1087'MARYLAND HIGHWAY 210, 5.0 FEET WEST OF POWER POLE NUMBER 868993,
 HV1087'2.0 FEET NORTH OF A METAL WITNESS POST SET IN THE TOP OF A
 HV1087'CONCRETE POST SET FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1281 ***********************************************************************
 JV1281  DESIGNATION -  B 112 MDSRC
 JV1281  PID         -  JV1281
 JV1281  STATE/COUNTY-  MD/BALTIMORE
 JV1281  COUNTRY     -  US
 JV1281  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1281
 JV1281                         *CURRENT SURVEY CONTROL
 JV1281  ______________________________________________________________________
 JV1281* NAD 83(1986) POSITION- 39 23 27.     (N) 076 44 29.     (W)   SCALED
 JV1281* NAVD 88 ORTHO HEIGHT -   152.429 (meters)      500.09  (feet) ADJUSTED
 JV1281  ______________________________________________________________________
 JV1281  GEOID HEIGHT    -        -32.251 (meters)                     GEOID18
 JV1281  DYNAMIC HEIGHT  -        152.349 (meters)      499.83  (feet) COMP
 JV1281  MODELED GRAVITY -    980,097.7   (mgal)                       NAVD 88
 JV1281
 JV1281  VERT ORDER      -  SECOND    CLASS 0
 JV1281
 JV1281.The horizontal coordinates were scaled from a map and have
 JV1281.an estimated accuracy of +/- 6 seconds.
 JV1281
 JV1281.The orthometric height was determined by differential leveling and
 JV1281.adjusted by the NATIONAL GEODETIC SURVEY
 JV1281.in June 1991.
 JV1281
 JV1281.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1281.GEOID18 height accuracy estimate available here.
 JV1281
 JV1281.Click photographs - Photos may exist for this station.
 JV1281
 JV1281.The dynamic height is computed by dividing the NAVD 88
 JV1281.geopotential number by the normal gravity value computed on the
 JV1281.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1281.degrees latitude (g = 980.6199 gals.).
 JV1281
 JV1281.The modeled gravity was interpolated from observed gravity values.
 JV1281
 JV1281;                    North         East    Units  Estimated Accuracy
 JV1281;SPC MD       -   191,430.      422,280.      MT  (+/- 180 meters Scaled)
 JV1281
 JV1281_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ500615(NAD 83)
 JV1281
 JV1281                          SUPERSEDED SURVEY CONTROL
 JV1281
 JV1281  NGVD 29 (11/26/84)  152.641  (m)          500.79   (f) ADJUSTED    2 0
 JV1281
 JV1281.Superseded values are not recommended for survey control.
 JV1281
 JV1281.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1281.See file dsdata.pdf to determine how the superseded data were derived.
 JV1281
 JV1281_MARKER: DB = BENCH MARK DISK
 JV1281_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1281_STAMPING: B-112 1967 USC AND GS
 JV1281_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1281+STABILITY: SURFACE MOTION
 JV1281
 JV1281  HISTORY     - Date     Condition        Report By
 JV1281  HISTORY     - 1967     MONUMENTED       MDSRC
 JV1281  HISTORY     - 20100708 MARK NOT FOUND   JARICE
 JV1281
 JV1281                          STATION DESCRIPTION
 JV1281
 JV1281'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1281'1.5 MI NW FROM PIKESVILLE.
 JV1281'FROM THE BRIDGE OVER THE BALTIMORE BELTWAY PROCEED NORTHWEST
 JV1281'ALONG U.S. 140 (REISTERSTOWN ROAD) FOR 0.5 MILE AND ENTRANCE TO
 JV1281'GREY ROCK.  STATION IS LOCATED ON THE PROPERTY OF SACRED HEART
 JV1281'MONASTERY.  81.0 FEET EAST OF THE CENTERLINE OF U.S. 140, 24.0
 JV1281'FEET SOUTH OF THE DRIVEWAY LEADING TO THE MONASTERY, 24.0 FEET
 JV1281'WEST OF A 12 INCH MAPLE TREE.  A STANDARD DISK SET IN THE TOP
 JV1281'OF A CONCRETE POST FLUSH WITH THE GROUND AND 3.0 FEET LOWER THAN
 JV1281'THE DRIVEWAY, STAMPED B-112 1967 U.S.C. AND G.S.
 JV1281
 JV1281                          STATION RECOVERY (2010)
 JV1281
 JV1281'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV1281'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0479 ***********************************************************************
 JW0479  DESIGNATION -  B 113
 JW0479  PID         -  JW0479
 JW0479  STATE/COUNTY-  MD/ALLEGANY
 JW0479  COUNTRY     -  US
 JW0479  USGS QUAD   -  EVITTS CREEK (2016)
 JW0479
 JW0479                         *CURRENT SURVEY CONTROL
 JW0479  ______________________________________________________________________
 JW0479* NAD 83(1986) POSITION- 39 40 28.     (N) 078 44 33.     (W)   SCALED
 JW0479* NAVD 88 ORTHO HEIGHT -   234.110 (meters)      768.08  (feet) ADJUSTED
 JW0479  ______________________________________________________________________
 JW0479  GEOID HEIGHT    -        -32.726 (meters)                     GEOID18
 JW0479  DYNAMIC HEIGHT  -        233.974 (meters)      767.63  (feet) COMP
 JW0479  MODELED GRAVITY -    980,040.0   (mgal)                       NAVD 88
 JW0479
 JW0479  VERT ORDER      -  FIRST     CLASS II
 JW0479
 JW0479.The horizontal coordinates were scaled from a map and have
 JW0479.an estimated accuracy of +/- 6 seconds.
 JW0479
 JW0479.The orthometric height was determined by differential leveling and
 JW0479.adjusted by the NATIONAL GEODETIC SURVEY
 JW0479.in June 1991.
 JW0479
 JW0479.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0479.GEOID18 height accuracy estimate available here.
 JW0479
 JW0479.Click photographs - Photos may exist for this station.
 JW0479
 JW0479.The dynamic height is computed by dividing the NAVD 88
 JW0479.geopotential number by the normal gravity value computed on the
 JW0479.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0479.degrees latitude (g = 980.6199 gals.).
 JW0479
 JW0479.The modeled gravity was interpolated from observed gravity values.
 JW0479
 JW0479;                    North         East    Units  Estimated Accuracy
 JW0479;SPC MD       -   224,310.      250,500.      MT  (+/- 180 meters Scaled)
 JW0479
 JW0479_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD936940(NAD 83)
 JW0479
 JW0479                          SUPERSEDED SURVEY CONTROL
 JW0479
 JW0479  NGVD 29 (??/??/92)  234.276  (m)          768.62   (f) ADJ UNCH    1 2
 JW0479
 JW0479.Superseded values are not recommended for survey control.
 JW0479
 JW0479.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0479.See file dsdata.pdf to determine how the superseded data were derived.
 JW0479
 JW0479_MARKER: DB = BENCH MARK DISK
 JW0479_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JW0479_SP_SET: DROP INLET HEADWALL
 JW0479_STAMPING: B 113 1967
 JW0479_MARK LOGO: CGS
 JW0479_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW0479_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0479_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW0479+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2002
 JW0479
 JW0479  HISTORY     - Date     Condition        Report By
 JW0479  HISTORY     - 1967     MONUMENTED       CGS
 JW0479  HISTORY     - 1983     GOOD             NGS
 JW0479  HISTORY     - 20020529 GOOD             MDSHA
 JW0479
 JW0479                          STATION DESCRIPTION
 JW0479
 JW0479'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JW0479'1.7 MI N FROM CUMBERLAND.
 JW0479'ABOUT 1.7 MILES NORTH ALONG U.S. HIGHWAY 220 FROM THE JUNCTION
 JW0479'OF U.S. HIGHWAY 220 AND 40, SET IN THE TOP OF THE NORTH END OF
 JW0479'THE BACKWALL OF A CATCH BASIN, 28.0 FEET NORTH OF APPROXIMATE
 JW0479'CENTERLINE OF U.S. HIGHWAY 220 AND FREDERICT STREET, 16.0 FEET
 JW0479'WEST OF APPROXIMATE CENTERLINE OF EDWARDS AVENUE AND ABOUT LEVEL
 JW0479'WITH HIGHWAY.
 JW0479
 JW0479                          STATION RECOVERY (1983)
 JW0479
 JW0479'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0479'RECOVERED IN GOOD CONDITION, NEW DESCRIPTION FOLLOWS.  IN CUMBERLAND,
 JW0479'2.8 KM (1.75 MI) NORTHEAST ALONG FREDERICK STREET FROM THE CITY HALL
 JW0479'TO THE MARK ON THE LEFT, AT THE JUNCTION OF EDWARDS AVENUE, IN TOP OF
 JW0479'THE HEADWALL OF A STORM DRAIN, 8.38 METERS (27.5 FT) NORTHWEST OF THE
 JW0479'CENTERLINE OF FREDERICK STREET, 10.70 METERS (35.0 FT) EAST OF THE
 JW0479'EAST CORNER OF A SINGLE STORY BRICK HOUSE, 1826 FREDERICK STREET,
 JW0479'5.02 METERS (16.5 FT) SOUTHWEST OF THE CENTER OF EDWARDS AVENUE,
 JW0479'1.52 METERS (5.0 FT) NORTH-NORTHEAST OF A STOP SIGN.
 JW0479'THE MARK IS 0.24 M ABOVE AVENUE.
 JW0479
 JW0479                          STATION RECOVERY (2002)
 JW0479
 JW0479'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JW0479'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1615 ***********************************************************************
 JU1615  DESIGNATION -  B 114
 JU1615  PID         -  JU1615
 JU1615  STATE/COUNTY-  MD/CECIL
 JU1615  COUNTRY     -  US
 JU1615  USGS QUAD   -  ELKTON (2016)
 JU1615
 JU1615                         *CURRENT SURVEY CONTROL
 JU1615  ______________________________________________________________________
 JU1615* NAD 83(1986) POSITION- 39 32 11.85   (N) 075 48 30.96   (W)   HD_HELD1
 JU1615* NAVD 88 ORTHO HEIGHT -    10.715 (meters)       35.15  (feet) ADJUSTED
 JU1615  ______________________________________________________________________
 JU1615  GEOID HEIGHT    -        -33.299 (meters)                     GEOID18
 JU1615  DYNAMIC HEIGHT  -         10.710 (meters)       35.14  (feet) COMP
 JU1615  MODELED GRAVITY -    980,133.9   (mgal)                       NAVD 88
 JU1615
 JU1615  VERT ORDER      -  FIRST     CLASS II
 JU1615
 JU1615.The horizontal coordinates were determined by differentially corrected
 JU1615.hand held GPS observations or other comparable positioning techniques
 JU1615.and have an estimated accuracy of +/- 3 meters.
 JU1615
 JU1615.The orthometric height was determined by differential leveling and
 JU1615.adjusted by the NATIONAL GEODETIC SURVEY
 JU1615.in June 1991.
 JU1615
 JU1615.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1615.GEOID18 height accuracy estimate available here.
 JU1615
 JU1615.Click photographs - Photos may exist for this station.
 JU1615
 JU1615.The dynamic height is computed by dividing the NAVD 88
 JU1615.geopotential number by the normal gravity value computed on the
 JU1615.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1615.degrees latitude (g = 980.6199 gals.).
 JU1615
 JU1615.The modeled gravity was interpolated from observed gravity values.
 JU1615
 JU1615;                    North         East    Units  Estimated Accuracy
 JU1615;SPC MD       -   208,249.6     502,421.3     MT  (+/- 3 meters HH1 GPS) 
 JU1615
 JU1615_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3051376641(NAD 83)
 JU1615
 JU1615                          SUPERSEDED SURVEY CONTROL
 JU1615
 JU1615  NGVD 29 (11/26/84)   10.953  (m)           35.94   (f) ADJUSTED    1 2
 JU1615
 JU1615.Superseded values are not recommended for survey control.
 JU1615
 JU1615.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1615.See file dsdata.pdf to determine how the superseded data were derived.
 JU1615
 JU1615_MARKER: DB = BENCH MARK DISK
 JU1615_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JU1615_STAMPING: B 114 1971
 JU1615_MARK LOGO: CGS
 JU1615_PROJECTION: FLUSH
 JU1615_MAGNETIC: I = MARKER IS A STEEL ROD
 JU1615_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1615_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1615+SATELLITE: SATELLITE OBSERVATIONS - October 15, 2025
 JU1615
 JU1615  HISTORY     - Date     Condition        Report By
 JU1615  HISTORY     - 1971     MONUMENTED       NGS
 JU1615  HISTORY     - 20010201 GOOD             MDSHA
 JU1615  HISTORY     - 20120119 GOOD             MD-015
 JU1615  HISTORY     - 20140311 GOOD             ARCSHE
 JU1615  HISTORY     - 20251015 GOOD             PROFLN
 JU1615
 JU1615                          STATION DESCRIPTION
 JU1615
 JU1615'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1615'0.2 MI NE FROM CHESAPEAKE CITY.
 JU1615'ABOUT 0.25 MILE NORTHEAST ALONG U.S. HIGHWAY 213 FROM THE
 JU1615'NORTHEAST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1615'DELAWARE CANAL AT CHESAPEAKE CITY, AT THE JUNCTION OF STATE HIGHWAY
 JU1615'285 WHICH LEADS EAST, 149 FEET SOUTHEAST OF THE CENTER LINE OF
 JU1615'THE SOUTHEAST LANES (NORTHBOUND) OF THE HIGHWAY, 38 FEET NORTHEAST
 JU1615'OF THE CENTER LINE OF STATE HIGHWAY 285, 47 FEET EAST OF THE
 JU1615'SOUTHEAST END OF THE MEDIAN OF THE STATE HIGHWAY, 5 FEET NORTHEAST
 JU1615'OF POWER POLE NUMBER 16198, 2.0 FEET NORTHWEST OF A METAL WITNESS
 JU1615'POST, ABOUT 2 FEET ABOVE THE LEVEL OF THE STATE HIGHWAY, AND ON
 JU1615'THE TOP OF A COPPER COATED ROD WHICH IS LEVEL WITH THE GROUND AND
 JU1615'IS PROTECTED BY A 5-INCH METAL PIPE WHICH PROJECTS 1 INCH.  THE
 JU1615'ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 44 1/2 FEET.
 JU1615
 JU1615                          STATION RECOVERY (2001)
 JU1615
 JU1615'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JU1615'RECOVERED AS DESCRIBED.
 JU1615
 JU1615                          STATION RECOVERY (2012)
 JU1615
 JU1615'RECOVERY NOTE BY CECIL COUNTY MARYLAND 2012 (DRB)
 JU1615'RECOVERED IN GOOD CONDITION.
 JU1615
 JU1615                          STATION RECOVERY (2014)
 JU1615
 JU1615'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JU1615'RECOVERED IN GOOD CONDITION.
 JU1615
 JU1615                          STATION RECOVERY (2025)
 JU1615
 JU1615'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1615'THE MARK IS 153 FT (46.6 M) SOUTHEAST OF THE NORTHBOUND LANES OF
 JU1615'HIGHWAY 213, 68 FT (20.7 M) NORTHWEST TOWARD THE HIGHWAY FROM THE
 JU1615'NORTHWEST END OF A GUARDRAIL, 27 FT (8.2 M) EASTERLY FROM HIGHWAY
 JU1615'SIGNS - 213 SOUTH NORTH - 6 FT (1.8 M) NORTHEAST OR BEHIND POLE
 JU1615'41235-35831, 6 FT (1.8 M) NORTHEAST OR INSIDE OF THE EDGE OF THE
 JU1615'WOODS, 1 FT (0.3 M) SOUTHWEST TOWARD HIGHWAY 285 FROM A METAL WITNESS
 JU1615'POST, FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0258 ***********************************************************************
 JV0258  DESIGNATION -  B 115
 JV0258  PID         -  JV0258
 JV0258  STATE/COUNTY-  MD/KENT
 JV0258  COUNTRY     -  US
 JV0258  USGS QUAD   -  BETTERTON (2017)
 JV0258
 JV0258                         *CURRENT SURVEY CONTROL
 JV0258  ______________________________________________________________________
 JV0258* NAD 83(1986) POSITION- 39 19 23.2    (N) 076 01 01.2    (W)   HD_HELD2
 JV0258* NAVD 88 ORTHO HEIGHT -    24.225 (meters)       79.48  (feet) ADJUSTED
 JV0258  ______________________________________________________________________
 JV0258  GEOID HEIGHT    -        -33.374 (meters)                     GEOID18
 JV0258  DYNAMIC HEIGHT  -         24.212 (meters)       79.44  (feet) COMP
 JV0258  MODELED GRAVITY -    980,116.0   (mgal)                       NAVD 88
 JV0258
 JV0258  VERT ORDER      -  FIRST     CLASS II
 JV0258
 JV0258.The horizontal coordinates were established by autonomous hand held GPS
 JV0258.observations and have an estimated accuracy of +/- 10 meters.
 JV0258
 JV0258.The orthometric height was determined by differential leveling and
 JV0258.adjusted by the NATIONAL GEODETIC SURVEY
 JV0258.in June 1991.
 JV0258
 JV0258.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0258.GEOID18 height accuracy estimate available here.
 JV0258
 JV0258.Click photographs - Photos may exist for this station.
 JV0258
 JV0258.The dynamic height is computed by dividing the NAVD 88
 JV0258.geopotential number by the normal gravity value computed on the
 JV0258.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0258.degrees latitude (g = 980.6199 gals.).
 JV0258
 JV0258.The modeled gravity was interpolated from observed gravity values.
 JV0258
 JV0258;                    North         East    Units  Estimated Accuracy
 JV0258;SPC MD       -   184,333.      484,762.      MT  (+/- 10 meters HH2 GPS)
 JV0258
 JV0258_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1233753126(NAD 83)
 JV0258
 JV0258                          SUPERSEDED SURVEY CONTROL
 JV0258
 JV0258  NGVD 29 (11/26/84)   24.467  (m)           80.27   (f) ADJUSTED    1 2
 JV0258
 JV0258.Superseded values are not recommended for survey control.
 JV0258
 JV0258.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0258.See file dsdata.pdf to determine how the superseded data were derived.
 JV0258
 JV0258_MARKER: DB = BENCH MARK DISK
 JV0258_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0258+WITH SETTING: INTO GROUND
 JV0258_STAMPING: B 115 1971
 JV0258_MARK LOGO: CGS
 JV0258_PROJECTION: FLUSH
 JV0258_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0258_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0258+SATELLITE: SATELLITE OBSERVATIONS - February 03, 2022
 JV0258
 JV0258  HISTORY     - Date     Condition        Report By
 JV0258  HISTORY     - 1971     MONUMENTED       NGS
 JV0258  HISTORY     - 1990     GOOD             USPSQD
 JV0258  HISTORY     - 20011228 GOOD             USPSQD
 JV0258  HISTORY     - 20060525 GOOD             USPSQD
 JV0258  HISTORY     - 20130503 GOOD             ARCSHE
 JV0258  HISTORY     - 20220203 GOOD             MDSHA
 JV0258
 JV0258                          STATION DESCRIPTION
 JV0258
 JV0258'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0258'1.6 MI E FROM STILL POND.
 JV0258'ABOUT 1.2 MILES EAST ALONG STATE HIGHWAY 566 FROM THE JUNCTION
 JV0258'OF STATE HIGHWAY 292 AT STILL POND, THENCE 0.35 MILE EAST ALONG
 JV0258'STATE HIGHWAY 298, NEAR THE JUNCTION OF A ROAD THAT LEADS SOUTH
 JV0258'TO A FARMHOUSE, 40 FEET NORTH OF THE CENTER LINE OF THE
 JV0258'HIGHWAY, 149 FEET WEST OF THE CENTER LINE OF THE ROAD, 31 FEET
 JV0258'WEST OF A CORNER FENCE POST, 4 FEET EAST OF TELEPHONE POLE NUMBER
 JV0258'45, 2 FEET SOUTH OF A FENCE, 1.5 FEET WEST OF A METAL WITNESS
 JV0258'POST, ABOUT 2 FEET ABOVE THE LEVEL OF THE HIGHWAY, AND ON THE
 JV0258'TOP OF A 4-FOOT SECTION OF COPPER COATED ROD THAT IS ATTACHED
 JV0258'TO A METAL BASE PLATE.  THE DISK IS LEVEL WITH THE SURFACE
 JV0258'OF THE GROUND AND IS PROTECTED BY A 6-INCH METAL PIPE PROJECTING
 JV0258'1 INCH.
 JV0258
 JV0258                          STATION RECOVERY (1990)
 JV0258
 JV0258'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0258'RECOVERED IN GOOD CONDITION.
 JV0258
 JV0258                          STATION RECOVERY (2001)
 JV0258
 JV0258'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0258'RECOVERED IN GOOD CONDITION.
 JV0258
 JV0258                          STATION RECOVERY (2006)
 JV0258
 JV0258'RECOVERY NOTE BY US POWER SQUADRON 2006 (NMM)
 JV0258'THE REFERENCED FENCE IS NO LONGER THERE.  THE FIELD IS UNDER
 JV0258'CULTIVATION.  THE STATION IS ABOUT ONE FOOT UNDER THE LEVEL OF THE
 JV0258'HIGHWAY.  IT IS UNDER ABOUT 6-TO-9  INCHES OF FRESH DIRT.
 JV0258
 JV0258                          STATION RECOVERY (2013)
 JV0258
 JV0258'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JV0258'NOW 2.6 FT (0.8 M) EAST OF A FIBERGLASS WITNESS POST.
 JV0258
 JV0258                          STATION RECOVERY (2022)
 JV0258
 JV0258'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 JV0258'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1863 ***********************************************************************
 JU1863  DESIGNATION -  B 118
 JU1863  PID         -  JU1863
 JU1863  STATE/COUNTY-  MD/CECIL
 JU1863  COUNTRY     -  US
 JU1863  USGS QUAD   -  ELKTON (2016)
 JU1863
 JU1863                         *CURRENT SURVEY CONTROL
 JU1863  ______________________________________________________________________
 JU1863* NAD 83(1986) POSITION- 39 36 02.9    (N) 075 48 15.8    (W)   HD_HELD2
 JU1863* NAVD 88 ORTHO HEIGHT -    24.330 (meters)       79.82  (feet) ADJUSTED
 JU1863  ______________________________________________________________________
 JU1863  GEOID HEIGHT    -        -33.136 (meters)                     GEOID18
 JU1863  DYNAMIC HEIGHT  -         24.319 (meters)       79.79  (feet) COMP
 JU1863  MODELED GRAVITY -    980,146.1   (mgal)                       NAVD 88
 JU1863
 JU1863  VERT ORDER      -  FIRST     CLASS I
 JU1863
 JU1863.The horizontal coordinates were established by autonomous hand held GPS
 JU1863.observations and have an estimated accuracy of +/- 10 meters.
 JU1863
 JU1863.The orthometric height was determined by differential leveling and
 JU1863.adjusted by the NATIONAL GEODETIC SURVEY
 JU1863.in June 1991.
 JU1863
 JU1863.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1863.GEOID18 height accuracy estimate available here.
 JU1863
 JU1863.Click photographs - Photos may exist for this station.
 JU1863
 JU1863.The dynamic height is computed by dividing the NAVD 88
 JU1863.geopotential number by the normal gravity value computed on the
 JU1863.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1863.degrees latitude (g = 980.6199 gals.).
 JU1863
 JU1863.The modeled gravity was interpolated from observed gravity values.
 JU1863
 JU1863;                    North         East    Units  Estimated Accuracy
 JU1863;SPC MD       -   215,380.      502,690.      MT  (+/- 10 meters HH2 GPS)
 JU1863
 JU1863_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3093983761(NAD 83)
 JU1863
 JU1863                          SUPERSEDED SURVEY CONTROL
 JU1863
 JU1863  NGVD 29 (11/26/84)   24.566  (m)           80.60   (f) ADJUSTED    1 1
 JU1863
 JU1863.Superseded values are not recommended for survey control.
 JU1863
 JU1863.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1863.See file dsdata.pdf to determine how the superseded data were derived.
 JU1863
 JU1863_STAMPING: B 118 1971
 JU1863_MARK LOGO: CGS
 JU1863_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1863+SATELLITE: SATELLITE OBSERVATIONS - May 01, 2007
 JU1863
 JU1863  HISTORY     - Date     Condition        Report By
 JU1863  HISTORY     - 1971     MONUMENTED       NGS
 JU1863  HISTORY     - 1982     GOOD             LOCSUR
 JU1863  HISTORY     - 1984     GOOD             NGS
 JU1863  HISTORY     - 19930130 GOOD             USPSQD
 JU1863  HISTORY     - 20070501 GOOD             MDSHA
 JU1863  HISTORY     - 20140820 MARK NOT FOUND   JARICE
 JU1863
 JU1863                          STATION DESCRIPTION
 JU1863
 JU1863'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1863'1.3 MI E FROM ELKTON.
 JU1863'ABOUT 1.3 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE JUNCTION OF
 JU1863'U.S. HIGHWAY 213 AT ELKTON, 66 YARDS WEST OF THE JUNCTION OF THE
 JU1863'SOUTH LANES OF THE HIGHWAY AND THE WEST LEG OF STATE HIGHWAY 7,
 JU1863'25 FEET SOUTH OF THE CENTER LINE OF THE SOUTH LANES OF THE
 JU1863'HIGHWAY, SET IN THE TOP OF THE SOUTHEAST CORNER OF A 5- X 3- X
 JU1863'4-FOOT CONCRETE CATCH BASIN, 4.0 FEET SOUTHEAST OF THE SOUTH
 JU1863'END OF A 30-INCH METAL PIPE CULVERT UNDER THE SOUTH LANES OF THE
 JU1863'HIGHWAY, 38 FEET NORTHEAST OF A POWER POLE WHICH BEARS A TRANSFORMER,
 JU1863'0.5 FOOT NORTHWEST OF THE SOUTHEAST CORNER OF THE CATCH BASIN,
 JU1863'AND ABOUT 1 FOOT BELOW THE LEVEL OF THE HIGHWAY.
 JU1863
 JU1863                          STATION RECOVERY (1982)
 JU1863
 JU1863'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
 JU1863'RECOVERED IN GOOD CONDITION.
 JU1863
 JU1863                          STATION RECOVERY (1984)
 JU1863
 JU1863'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 JU1863'RECOVERED IN GOOD CONDITION.
 JU1863
 JU1863                          STATION RECOVERY (1993)
 JU1863
 JU1863'RECOVERY NOTE BY US POWER SQUADRON 1993 (DMM)
 JU1863'RECOVERED IN GOOD CONDITION.
 JU1863
 JU1863                          STATION RECOVERY (2007)
 JU1863
 JU1863'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (DCS)
 JU1863'THE MARK IS 108 FEET WEST OF A CONNECT V POWER POLE NUMBERED 41394
 JU1863'38173 WITH TRANSFORMER. THE FORMER POLE APPEARS TO HAVE BEEN REMOVED.
 JU1863
 JU1863                          STATION RECOVERY (2014)
 JU1863
 JU1863'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JU1863'NOT RECOVERED. NOTE-THERE IS A NEW CATCH BASIN AT THE LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0607 ***********************************************************************
 HU0607  DESIGNATION -  B 119
 HU0607  PID         -  HU0607
 HU0607  STATE/COUNTY-  MD/WICOMICO
 HU0607  COUNTRY     -  US
 HU0607  USGS QUAD   -  DELMAR (2016)
 HU0607
 HU0607                         *CURRENT SURVEY CONTROL
 HU0607  ______________________________________________________________________
 HU0607* NAD 83(2011) POSITION- 38 22 34.13818(N) 075 37 05.01905(W)   ADJUSTED
 HU0607* NAD 83(2011) ELLIP HT-   -26.924 (meters)        (06/27/12)   ADJUSTED
 HU0607* NAD 83(2011) EPOCH   -  2010.00
 HU0607* NAVD 88 ORTHO HEIGHT -     8.877 (meters)       29.12  (feet) ADJUSTED
 HU0607  ______________________________________________________________________
 HU0607  GEOID HEIGHT    -        -35.789 (meters)                     GEOID18
 HU0607  NAD 83(2011) X  -  1,243,560.862 (meters)                     COMP
 HU0607  NAD 83(2011) Y  - -4,849,695.777 (meters)                     COMP
 HU0607  NAD 83(2011) Z  -  3,938,244.142 (meters)                     COMP
 HU0607  LAPLACE CORR    -         -1.35  (seconds)                    DEFLEC18
 HU0607  DYNAMIC HEIGHT  -          8.872 (meters)       29.11  (feet) COMP
 HU0607  MODELED GRAVITY -    980,006.6   (mgal)                       NAVD 88
 HU0607
 HU0607  VERT ORDER      -  FIRST     CLASS II
 HU0607
 HU0607  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0607  Standards:
 HU0607         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0607            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0607  -------------------------------------------------------------------
 HU0607  NETWORK    1.46   2.53           0.54   0.64   1.29     -0.14686059
 HU0607  -------------------------------------------------------------------
 HU0607  Click here for local accuracies and other accuracy information.
 HU0607
 HU0607.The horizontal coordinates were established by GPS observations
 HU0607.and adjusted by the National Geodetic Survey in June 2012.
 HU0607
 HU0607.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0607.been affixed to the stable North American tectonic plate. See 
 HU0607.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0607
 HU0607.The horizontal coordinates are valid at the epoch date displayed above
 HU0607.which is a decimal equivalence of Year/Month/Day.
 HU0607
 HU0607.The orthometric height was determined by differential leveling and
 HU0607.adjusted by the NATIONAL GEODETIC SURVEY
 HU0607.in June 1991.
 HU0607
 HU0607.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0607.GEOID18 height accuracy estimate available here.
 HU0607
 HU0607.Click photographs - Photos may exist for this station.
 HU0607
 HU0607.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0607
 HU0607.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0607
 HU0607.The ellipsoidal height was determined by GPS observations
 HU0607.and is referenced to NAD 83.
 HU0607
 HU0607.The dynamic height is computed by dividing the NAVD 88
 HU0607.geopotential number by the normal gravity value computed on the
 HU0607.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0607.degrees latitude (g = 980.6199 gals.).
 HU0607
 HU0607.The modeled gravity was interpolated from observed gravity values.
 HU0607
 HU0607. The following values were computed from the NAD 83(2011) position.
 HU0607
 HU0607;                    North         East     Units Scale Factor Converg.
 HU0607;SPC MD       -    79,669.601   520,750.410   MT  0.99998762   +0 52 02.5
 HU0607;SPC MD       -   261,382.68  1,708,495.30   sFT  0.99998762   +0 52 02.5
 HU0607;UTM  18      - 4,247,731.702   446,014.008   MT  0.99963589   -0 23 01.4
 HU0607
 HU0607!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0607!SPC MD       -   1.00000422  x   0.99998762  =   0.99999184
 HU0607!UTM  18      -   1.00000422  x   0.99963589  =   0.99964011
 HU0607
 HU0607_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4601447731(NAD 83)
 HU0607
 HU0607|---------------------------------------------------------------------|
 HU0607| PID    Reference Object                     Distance      Geod. Az  |
 HU0607|                                                           dddmmss.s |
 HU0607| DJ3505 QUAN AZ MK                          382.596 METERS 15330     |
 HU0607|---------------------------------------------------------------------|
 HU0607
 HU0607                          SUPERSEDED SURVEY CONTROL
 HU0607
 HU0607  NAD 83(2007)-  38 22 34.13846(N)    075 37 05.01975(W) AD(2002.00) 1
 HU0607  ELLIP H (04/02/09)  -26.898  (m)                       GP(2002.00) 4 1
 HU0607  NAD 83(1991)-  38 22 34.13852(N)    075 37 05.01922(W) AD(       ) 1
 HU0607  ELLIP H (10/15/07)  -26.886  (m)                       GP(       ) 4 1
 HU0607  NAVD 88               8.88   (m)           29.1    (f) LEVELING    3  
 HU0607  NGVD 29 (11/26/84)    9.120  (m)           29.92   (f) ADJUSTED    1 2
 HU0607
 HU0607.Superseded values are not recommended for survey control.
 HU0607
 HU0607.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0607.See file dsdata.pdf to determine how the superseded data were derived.
 HU0607
 HU0607_MARKER: DB = BENCH MARK DISK
 HU0607_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU0607+WITH SETTING: INTO GROUND
 HU0607_STAMPING: B 119 1971
 HU0607_MARK LOGO: CGS
 HU0607_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0607+STABILITY: SURFACE MOTION
 HU0607_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0607+SATELLITE: SATELLITE OBSERVATIONS - April 19, 2004
 HU0607
 HU0607  HISTORY     - Date     Condition        Report By
 HU0607  HISTORY     - 1971     MONUMENTED       NGS
 HU0607  HISTORY     - 19971018 GOOD             USPSQD
 HU0607  HISTORY     - 20020618 GOOD             MDSHA
 HU0607  HISTORY     - 20040419 GOOD             GEOCAC
 HU0607
 HU0607                          STATION DESCRIPTION
 HU0607
 HU0607'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0607'1.4 MI NW FROM SALISBURY.
 HU0607'ABOUT 0.1 MILE NORTH ALONG DIVISION STREET FROM THE COURTHOUSE AT
 HU0607'SALISBURY, THENCE 1.3 MILES NORTHWEST ALONG U.S. HIGHWAY 50, WEST
 HU0607'OF AND ACROSS THE HIGHWAY FROM THE MARYLAND NATIONAL GUARD
 HU0607'BUILDING, 117.5 FEET NORTH OF THE NORTHEAST CORNER OF A LARGE
 HU0607'FRAME BUILDING (SPRING HILL NURSING HOME), 62 1/2 FEET WEST OF
 HU0607'THE CENTER LINE OF THE WEST LANE OF U.S. HIGHWAY 50, 29 FEET
 HU0607'SOUTH OF THE CENTER LINE OF LEGION ROAD, 17 1/2 FEET SOUTH OF THE
 HU0607'EXTENDED CENTER LINE OF BOOTH STREET, 23 FEET WEST OF POWER LINE
 HU0607'POLE NO. SK 23, 0.9 FOOT NORTH OF A BOARD FENCE, 0.8 FOOT NORTH
 HU0607'OF A METAL WITNESS POST, 3 FEET ABOVE THE LEVEL OF LEGION ROAD,
 HU0607'AND ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS
 HU0607'ATTACHED TO A METAL BASE PLATE.  THE DISK IS 2 INCHES BELOW THE
 HU0607'LEVEL OF THE GROUND AND ENCASED IN A 6 INCH PIPE 1 INCH BELOW THE
 HU0607'LEVEL OF THE GROUND.
 HU0607
 HU0607                          STATION RECOVERY (1997)
 HU0607
 HU0607'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0607'RECOVERED IN GOOD CONDITION.
 HU0607
 HU0607                          STATION RECOVERY (2002)
 HU0607
 HU0607'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 HU0607'RECOVERED AS DESCRIBED.
 HU0607
 HU0607                          STATION RECOVERY (2004)
 HU0607
 HU0607'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU0607'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2534 ***********************************************************************
 JV2534  DESIGNATION -  B 12
 JV2534  PID         -  JV2534
 JV2534  STATE/COUNTY-  MD/FREDERICK
 JV2534  COUNTRY     -  US
 JV2534  USGS QUAD   -  FREDERICK (2016)
 JV2534
 JV2534                         *CURRENT SURVEY CONTROL
 JV2534  ______________________________________________________________________
 JV2534* NAD 83(1986) POSITION- 39 26 10.     (N) 077 24 10.     (W)   SCALED
 JV2534* NAVD 88 ORTHO HEIGHT -    90.296 (meters)      296.25  (feet) ADJUSTED
 JV2534  ______________________________________________________________________
 JV2534  GEOID HEIGHT    -        -32.758 (meters)                     GEOID18
 JV2534  DYNAMIC HEIGHT  -         90.247 (meters)      296.09  (feet) COMP
 JV2534  MODELED GRAVITY -    980,090.5   (mgal)                       NAVD 88
 JV2534
 JV2534  VERT ORDER      -  SECOND    CLASS 0
 JV2534
 JV2534.The horizontal coordinates were scaled from a map and have
 JV2534.an estimated accuracy of +/- 6 seconds.
 JV2534
 JV2534.The orthometric height was determined by differential leveling and
 JV2534.adjusted by the NATIONAL GEODETIC SURVEY
 JV2534.in June 1991.
 JV2534
 JV2534.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2534.GEOID18 height accuracy estimate available here.
 JV2534
 JV2534.Click photographs - Photos may exist for this station.
 JV2534
 JV2534.The dynamic height is computed by dividing the NAVD 88
 JV2534.geopotential number by the normal gravity value computed on the
 JV2534.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2534.degrees latitude (g = 980.6199 gals.).
 JV2534
 JV2534.The modeled gravity was interpolated from observed gravity values.
 JV2534
 JV2534;                    North         East    Units  Estimated Accuracy
 JV2534;SPC MD       -   196,500.      365,320.      MT  (+/- 180 meters Scaled)
 JV2534
 JV2534_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ932679(NAD 83)
 JV2534
 JV2534                          SUPERSEDED SURVEY CONTROL
 JV2534
 JV2534  NGVD 29 (11/26/84)   90.518  (m)          296.97   (f) ADJUSTED    2 0
 JV2534
 JV2534.Superseded values are not recommended for survey control.
 JV2534
 JV2534.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2534.See file dsdata.pdf to determine how the superseded data were derived.
 JV2534
 JV2534_MARKER: DB = BENCH MARK DISK
 JV2534_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2534_STAMPING: B 12 1935
 JV2534_MARK LOGO: CGS
 JV2534_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2534+STABILITY: SURFACE MOTION
 JV2534
 JV2534  HISTORY     - Date     Condition        Report By
 JV2534  HISTORY     - 1935     MONUMENTED       CGS
 JV2534  HISTORY     - 20031102 MARK NOT FOUND   USPSQD
 JV2534
 JV2534                          STATION DESCRIPTION
 JV2534
 JV2534'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2534'1.5 MI NE FROM FREDERICK.
 JV2534'ABOUT 1.5 MILES NORTHEAST ALONG THE PENNSYVLVANIA RAILROAD
 JV2534'FROM THE CITY OPERA HOUSE AT FREDERICK, FREDERICK COUNTY, ABOUT
 JV2534'26 POLES NORTH OF MILEPOST 1, AT THE CROSSING OF STATE HIGHWAY
 JV2534'26, 42 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 37 FEET
 JV2534'WEST OF THE CENTER LINE OF THE TRACK, AND 3 FEET EAST OF THE
 JV2534'RIGHT-OF-WAY FENCE.  A STANDARD DISK, STAMPED B 12 1935 AND SET
 JV2534'IN THE TOP OF A CONCRETE POST.
 JV2534
 JV2534                          STATION RECOVERY (2003)
 JV2534
 JV2534'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV2534'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6011 ***********************************************************************
 DN6011  DESIGNATION -  B 12
 DN6011  PID         -  DN6011
 DN6011  STATE/COUNTY-  MD/CARROLL
 DN6011  COUNTRY     -  US
 DN6011  USGS QUAD   -  MANCHESTER (2016)
 DN6011
 DN6011                         *CURRENT SURVEY CONTROL
 DN6011  ______________________________________________________________________
 DN6011* NAD 83(1986) POSITION- 39 39 08.5    (N) 076 57 24.7    (W)   HD_HELD2
 DN6011* NAVD 88 ORTHO HEIGHT -   196.221 (meters)      643.77  (feet) ADJUSTED
 DN6011  ______________________________________________________________________
 DN6011  GEOID HEIGHT    -        -32.412 (meters)                     GEOID18
 DN6011  DYNAMIC HEIGHT  -        196.119 (meters)      643.43  (feet) COMP
 DN6011  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 DN6011
 DN6011  VERT ORDER      -  SECOND    CLASS II
 DN6011
 DN6011.The horizontal coordinates were established by autonomous hand held GPS
 DN6011.observations and have an estimated accuracy of +/- 10 meters.
 DN6011
 DN6011.The orthometric height was determined by differential leveling and
 DN6011.adjusted by the NATIONAL GEODETIC SURVEY
 DN6011.in June 2012.
 DN6011
 DN6011.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6011.GEOID18 height accuracy estimate available here.
 DN6011
 DN6011.Click photographs - Photos may exist for this station.
 DN6011
 DN6011.The dynamic height is computed by dividing the NAVD 88
 DN6011.geopotential number by the normal gravity value computed on the
 DN6011.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6011.degrees latitude (g = 980.6199 gals.).
 DN6011
 DN6011.The modeled gravity was interpolated from observed gravity values.
 DN6011
 DN6011;                    North         East    Units  Estimated Accuracy
 DN6011;SPC MD       -   220,432.      403,703.      MT  (+/- 10 meters HH2 GPS)
 DN6011
 DN6011_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3211291003(NAD 83)
 DN6011
 DN6011                          SUPERSEDED SURVEY CONTROL
 DN6011
 DN6011.No superseded survey control is available for this station.
 DN6011
 DN6011_MARKER: DD = SURVEY DISK
 DN6011_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DN6011_SP_SET: BOX CULVERT HEADWALL
 DN6011_STAMPING: -12
 DN6011_MARK LOGO: MD-013
 DN6011_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DN6011_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6011+STABILITY: SURFACE MOTION
 DN6011_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6011+SATELLITE: SATELLITE OBSERVATIONS - January 29, 2008
 DN6011
 DN6011  HISTORY     - Date     Condition        Report By
 DN6011  HISTORY     - 1982     MONUMENTED       MD-013
 DN6011  HISTORY     - 20080129 GOOD             MDSHA
 DN6011
 DN6011                          STATION DESCRIPTION
 DN6011
 DN6011'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6011'THE MARK IS LOCATED ABOUT 7.5 MI (12.1 KM) SOUTHWEST OF LINEBORO, 6.6
 DN6011'MI (10.6 KM) WEST-NORTHWEST OF HAMPSTEAD AND 3.9 MI (6.3 KM) WEST OF
 DN6011'MANCHESTER.
 DN6011'
 DN6011'TO REACH THE MARK FROM THE MARYLAND ROUTE 140 BRIDGE OVER MARYLAND
 DN6011'ROUTE 97 IN THE NORTHERN MOST SECTION OF WESTMINSTER, GO NORTH ALONG
 DN6011'MARYLAND ROUTE 97 FOR 2.5 MI (4.0 KM) TO ITS JUNCTION WITH MARYLAND
 DN6011'ROUTE 496 LEADING NORTHEAST.  TURN RIGHT AND GO NORTHEAST ON MARYLAND
 DN6011'ROUTE 496 FOR 3.0 MI (4.8 KM) TO THE JUNCTION WITH OLD BACHMANS VALLEY
 DN6011'ROAD ON THE RIGHT LEADING SOUTH.  TURN RIGHT AND GO SOUTH ON OLD
 DN6011'BACHMANS VALLEY ROAD FOR 0.25 MI (0.4 KM) TO THE BOX CULVERT AND THE
 DN6011'MARK ON THE RIGHT.
 DN6011'
 DN6011'IT IS SET IN THE TOP OF THE SOUTHWEST END OF THE CONCRETE HEADWALL OF
 DN6011'THE BOX CULVERT ON OLD BACHMANS VALLEY ROAD OVER BIG PIPE CREEK.  IT
 DN6011'IS 24.0 FT (7.3 M) WEST OF THE CENTERLINE OF BACHMANS VALLEY ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1007 ***********************************************************************
 HU1007  DESIGNATION -  B 120
 HU1007  PID         -  HU1007
 HU1007  STATE/COUNTY-  MD/DORCHESTER
 HU1007  COUNTRY     -  US
 HU1007  USGS QUAD   -  EAST NEW MARKET (2016)
 HU1007
 HU1007                         *CURRENT SURVEY CONTROL
 HU1007  ______________________________________________________________________
 HU1007* NAD 83(1986) POSITION- 38 33 01.8    (N) 075 57 08.3    (W)   HD_HELD2
 HU1007* NAVD 88 ORTHO HEIGHT -     4.596 (meters)       15.08  (feet) ADJUSTED
 HU1007  ______________________________________________________________________
 HU1007  GEOID HEIGHT    -        -35.256 (meters)                     GEOID18
 HU1007  DYNAMIC HEIGHT  -          4.593 (meters)       15.07  (feet) COMP
 HU1007  MODELED GRAVITY -    980,016.6   (mgal)                       NAVD 88
 HU1007
 HU1007  VERT ORDER      -  FIRST     CLASS II
 HU1007
 HU1007.The horizontal coordinates were established by autonomous hand held GPS
 HU1007.observations and have an estimated accuracy of +/- 10 meters.
 HU1007
 HU1007.The orthometric height was determined by differential leveling and
 HU1007.adjusted by the NATIONAL GEODETIC SURVEY
 HU1007.in June 1991.
 HU1007
 HU1007.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1007.GEOID18 height accuracy estimate available here.
 HU1007
 HU1007.Click photographs - Photos may exist for this station.
 HU1007
 HU1007.The dynamic height is computed by dividing the NAVD 88
 HU1007.geopotential number by the normal gravity value computed on the
 HU1007.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1007.degrees latitude (g = 980.6199 gals.).
 HU1007
 HU1007.The modeled gravity was interpolated from observed gravity values.
 HU1007
 HU1007;                    North         East    Units  Estimated Accuracy
 HU1007;SPC MD       -    98,633.      491,324.      MT  (+/- 10 meters HH2 GPS)
 HU1007
 HU1007_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1701867326(NAD 83)
 HU1007
 HU1007                          SUPERSEDED SURVEY CONTROL
 HU1007
 HU1007  NGVD 29 (11/26/84)    4.830  (m)           15.85   (f) ADJUSTED    1 2
 HU1007
 HU1007.Superseded values are not recommended for survey control.
 HU1007
 HU1007.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1007.See file dsdata.pdf to determine how the superseded data were derived.
 HU1007
 HU1007_MARKER: DB = BENCH MARK DISK
 HU1007_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU1007_SP_SET: BOX CULVERT
 HU1007_STAMPING: B 120 1971
 HU1007_MARK LOGO: CGS
 HU1007_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1007+STABILITY: SURFACE MOTION
 HU1007_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1007+SATELLITE: SATELLITE OBSERVATIONS - January 07, 2007
 HU1007
 HU1007  HISTORY     - Date     Condition        Report By
 HU1007  HISTORY     - 1971     MONUMENTED       NGS
 HU1007  HISTORY     - 20021129 GOOD             USPSQD
 HU1007  HISTORY     - 20051125 GOOD             USPSQD
 HU1007  HISTORY     - 20070107 GOOD             USPSQD
 HU1007
 HU1007                          STATION DESCRIPTION
 HU1007
 HU1007'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU1007'0.5 MI NW FROM LINKWOOD.
 HU1007'ABOUT 0.5 MILE NORTHWEST ALONG U.S. HIGHWAY 50 FROM THE POST
 HU1007'OFFICE AT LINKWOOD, 204 FEET SOUTHEAST OF THE CENTER OF THE
 HU1007'JUNCTION OF THE HIGHWAY AND A PAVED ROAD THAT LEADS NORTHWEST
 HU1007'(OLD U.S. HIGHWAY 50), SET IN THE TOP OF THE NORTHWEST END OF THE
 HU1007'NORTHEAST CONCRETE HEADWALL OF AN 8- X 17-FOOT DOUBLE-CHANNEL
 HU1007'CULVERT, 38 FEET NORTHEAST OF THE CENTER LINE OF THE NORTHEAST
 HU1007'LANES OF THE HIGHWAY, AND ABOUT 4 1/2 FEET BELOW THE LEVEL OF THE
 HU1007'HIGHWAY.
 HU1007
 HU1007                          STATION RECOVERY (2002)
 HU1007
 HU1007'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HU1007'RECOVERED IN GOOD CONDITION.
 HU1007
 HU1007                          STATION RECOVERY (2005)
 HU1007
 HU1007'RECOVERY NOTE BY US POWER SQUADRON 2005 (NLH)
 HU1007'GROWTH OVER THE CEMENT WALL PREVENTS IT FROM BEING SEEN
 HU1007
 HU1007                          STATION RECOVERY (2007)
 HU1007
 HU1007'RECOVERY NOTE BY US POWER SQUADRON 2007 (NNH)
 HU1007'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0002 ***********************************************************************
 JV0002  DESIGNATION -  B 121
 JV0002  PID         -  JV0002
 JV0002  STATE/COUNTY-  MD/HARFORD
 JV0002  COUNTRY     -  US
 JV0002  USGS QUAD   -  ABERDEEN (2016)
 JV0002
 JV0002                         *CURRENT SURVEY CONTROL
 JV0002  ______________________________________________________________________
 JV0002* NAD 83(1986) POSITION- 39 30 23.     (N) 076 09 55.     (W)   SCALED
 JV0002* NAVD 88 ORTHO HEIGHT -    24.111 (meters)       79.10  (feet) ADJUSTED
 JV0002  ______________________________________________________________________
 JV0002  GEOID HEIGHT    -        -33.121 (meters)                     GEOID18
 JV0002  DYNAMIC HEIGHT  -         24.099 (meters)       79.06  (feet) COMP
 JV0002  MODELED GRAVITY -    980,125.2   (mgal)                       NAVD 88
 JV0002
 JV0002  VERT ORDER      -  FIRST     CLASS I
 JV0002
 JV0002.The horizontal coordinates were scaled from a map and have
 JV0002.an estimated accuracy of +/- 6 seconds.
 JV0002
 JV0002.The orthometric height was determined by differential leveling and
 JV0002.adjusted by the NATIONAL GEODETIC SURVEY
 JV0002.in June 1991.
 JV0002
 JV0002.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0002.GEOID18 height accuracy estimate available here.
 JV0002
 JV0002.Click photographs - Photos may exist for this station.
 JV0002
 JV0002.The dynamic height is computed by dividing the NAVD 88
 JV0002.geopotential number by the normal gravity value computed on the
 JV0002.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0002.degrees latitude (g = 980.6199 gals.).
 JV0002
 JV0002.The modeled gravity was interpolated from observed gravity values.
 JV0002
 JV0002;                    North         East    Units  Estimated Accuracy
 JV0002;SPC MD       -   204,550.      471,790.      MT  (+/- 180 meters Scaled)
 JV0002
 JV0002_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ998736(NAD 83)
 JV0002
 JV0002                          SUPERSEDED SURVEY CONTROL
 JV0002
 JV0002  NGVD 29 (11/26/84)   24.355  (m)           79.90   (f) ADJUSTED    1 1
 JV0002
 JV0002.Superseded values are not recommended for survey control.
 JV0002
 JV0002.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0002.See file dsdata.pdf to determine how the superseded data were derived.
 JV0002
 JV0002_MARKER: DB = BENCH MARK DISK
 JV0002_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0002_STAMPING: B 121 1971
 JV0002_MARK LOGO: CGS
 JV0002_PROJECTION: RECESSED 20 CENTIMETERS
 JV0002_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0002_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0002+SATELLITE: SATELLITE OBSERVATIONS - May 11, 2002
 JV0002_ROD/PIPE-DEPTH: 4.4 meters
 JV0002
 JV0002  HISTORY     - Date     Condition        Report By
 JV0002  HISTORY     - 1971     MONUMENTED       NGS
 JV0002  HISTORY     - 1987     GOOD             USPSQD
 JV0002  HISTORY     - 19891106 GOOD             NGS
 JV0002  HISTORY     - 19970419 GOOD             USPSQD
 JV0002  HISTORY     - 20020511 GOOD             USPSQD
 JV0002  HISTORY     - 20150919 MARK NOT FOUND   USPSQD
 JV0002
 JV0002                          STATION DESCRIPTION
 JV0002
 JV0002'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0002'AT ABERDEEN.
 JV0002'AT ABERDEEN, ABOUT 0.35 MILE SOUTHWEST ALONG U.S. HIGHWAY 40 FROM
 JV0002'THE HIGH SCHOOL, NEAR THE JUNCTION OF THE HIGHWAY AND MARKET STREET
 JV0002'LEADING NORTHWEST AND A PAVED DRIVE LEADING SOUTHEAST, 48 FEET
 JV0002'SOUTHEAST OF THE CENTER LINE OF THE SOUTHEAST LANES OF THE
 JV0002'HIGHWAY, 20 FEET SOUTHWEST OF THE CENTER LINE OF THE DRIVE,
 JV0002'164.0 FEET NORTH OF THE NORTH CORNER OF A VIELE AND COMPANY
 JV0002'WAREHOUSE, 3 1/2 FEET SOUTHWEST OF POWER POLE NUMBER 265860,
 JV0002'4 1/2 FEET SOUTHWEST OF THE SOUTHWEST CURB LINE OF THE DRIVE,
 JV0002'1.5 FEET NORTHEAST OF A METAL WITNESS POST, ABOUT LEVEL WITH
 JV0002'THE HIGHWAY, AND ON THE TOP OF A COPPER COATED ROD LEVEL WITH
 JV0002'THE GROUND AND IS PROTECTED BY A 6-INCH TILE PROJECTING 1 INCH.
 JV0002'THE ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 14 1/2 FEET.
 JV0002
 JV0002                          STATION RECOVERY (1987)
 JV0002
 JV0002'RECOVERY NOTE BY US POWER SQUADRON 1987 (EMT)
 JV0002'RECOVERED IN GOOD CONDITION.
 JV0002
 JV0002                          STATION RECOVERY (1989)
 JV0002
 JV0002'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0002'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN
 JV0002'ABERDEEN, AT THE INTERSECTION OF U.S. HIGHWAY 40 AND MARKET STREET,
 JV0002'14.6 M (47.9 FT) SOUTHEAST OF THE CENTERLINE OF THE EASTBOUND LANES
 JV0002'OF THE HIGHWAY, 6.5 M (21.3 FT) SOUTHWEST OF THE EXTENDED CENTER OF
 JV0002'THE STREET, 0.9 M (3.0 FT) NORTHEAST OF A WITNESS POST, 0.5 M (1.6
 JV0002'FT) WEST-SOUTHWEST OF UTILITY POLE NUMBER 265860, AND LEVEL WITH THE
 JV0002'HIGHWAY.
 JV0002
 JV0002                          STATION RECOVERY (1997)
 JV0002
 JV0002'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0002'RECOVERED IN GOOD CONDITION.
 JV0002
 JV0002                          STATION RECOVERY (2002)
 JV0002
 JV0002'RECOVERY NOTE BY US POWER SQUADRON 2002 (TB)
 JV0002'RECOVERED IN GOOD CONDITION.
 JV0002
 JV0002                          STATION RECOVERY (2015)
 JV0002
 JV0002'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0002'THE METAL WITNESS POST WAS STILL THERE BUT A UTILITY BOX HAVE BEEN
 JV0002'INSTALLED ON GROUND LEVEL 22 INCHES NE OF THE WITNESS POST. MOST
 JV0002'LIKELY THE MARKER WAS DESTROYED DURING THE BOX INSTALLATION AND WHEN
 JV0002'RUNNING THE UNDER GROUND WIRES FROM THE POLE TO THE BOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0292 ***********************************************************************
 JV0292  DESIGNATION -  B 122
 JV0292  PID         -  JV0292
 JV0292  STATE/COUNTY-  MD/QUEEN ANNES
 JV0292  COUNTRY     -  US
 JV0292  USGS QUAD   -  CENTREVILLE (2017)
 JV0292
 JV0292                         *CURRENT SURVEY CONTROL
 JV0292  ______________________________________________________________________
 JV0292* NAD 83(1986) POSITION- 39 07 24.6    (N) 076 00 39.2    (W)   HD_HELD2
 JV0292* NAVD 88 ORTHO HEIGHT -    12.358 (meters)       40.54  (feet) ADJUSTED
 JV0292  ______________________________________________________________________
 JV0292  GEOID HEIGHT    -        -33.663 (meters)                     GEOID18
 JV0292  DYNAMIC HEIGHT  -         12.351 (meters)       40.52  (feet) COMP
 JV0292  MODELED GRAVITY -    980,101.7   (mgal)                       NAVD 88
 JV0292
 JV0292  VERT ORDER      -  FIRST     CLASS II
 JV0292
 JV0292.The horizontal coordinates were established by autonomous hand held GPS
 JV0292.observations and have an estimated accuracy of +/- 10 meters.
 JV0292
 JV0292.The orthometric height was determined by differential leveling and
 JV0292.adjusted by the NATIONAL GEODETIC SURVEY
 JV0292.in June 1991.
 JV0292
 JV0292.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0292.GEOID18 height accuracy estimate available here.
 JV0292
 JV0292.Click photographs - Photos may exist for this station.
 JV0292
 JV0292.The dynamic height is computed by dividing the NAVD 88
 JV0292.geopotential number by the normal gravity value computed on the
 JV0292.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0292.degrees latitude (g = 980.6199 gals.).
 JV0292
 JV0292.The modeled gravity was interpolated from observed gravity values.
 JV0292
 JV0292;                    North         East    Units  Estimated Accuracy
 JV0292;SPC MD       -   162,180.      485,529.      MT  (+/- 10 meters HH2 GPS)
 JV0292
 JV0292_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1261630968(NAD 83)
 JV0292
 JV0292                          SUPERSEDED SURVEY CONTROL
 JV0292
 JV0292  NGVD 29 (11/26/84)   12.597  (m)           41.33   (f) ADJUSTED    1 2
 JV0292
 JV0292.Superseded values are not recommended for survey control.
 JV0292
 JV0292.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0292.See file dsdata.pdf to determine how the superseded data were derived.
 JV0292
 JV0292_MARKER: DB = BENCH MARK DISK
 JV0292_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0292_SP_SET: BOX CULVERT
 JV0292_STAMPING: B 122 1971
 JV0292_MARK LOGO: CGS
 JV0292_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0292+STABILITY: SURFACE MOTION
 JV0292_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0292+SATELLITE: SATELLITE OBSERVATIONS - July 22, 2015
 JV0292
 JV0292  HISTORY     - Date     Condition        Report By
 JV0292  HISTORY     - 1971     MONUMENTED       NGS
 JV0292  HISTORY     - 19901128 GOOD             USPSQD
 JV0292  HISTORY     - 20000319 GOOD             USPSQD
 JV0292  HISTORY     - 20050220 GOOD             USPSQD
 JV0292  HISTORY     - 20150722 GOOD             USPSQD
 JV0292
 JV0292                          STATION DESCRIPTION
 JV0292
 JV0292'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0292'2.4 MI SW FROM CHURCH HILL.
 JV0292'ABOUT 2.4 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JV0292'JUNCTION OF STATE HIGHWAY 300 AT CHURCH HILL, 0.3 MILE NORTHEAST
 JV0292'OF THE ROAD INTERSECTION AT STARKEY CORNER, SET IN THE TOP OF
 JV0292'THE NORTHEAST END OF THE SOUTHEAST CONCRETE HEAD WALL FOR A
 JV0292'10-BY 6-FOOT BOX CULVERT WITH WING WALLS AND UNDER THE HIGHWAY,
 JV0292'20.7 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY AND 1/2
 JV0292'FOOT ABOVE THE LEVEL OF THE HIGHWAY.
 JV0292
 JV0292                          STATION RECOVERY (1990)
 JV0292
 JV0292'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0292'RECOVERED IN GOOD CONDITION.
 JV0292
 JV0292                          STATION RECOVERY (2000)
 JV0292
 JV0292'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 JV0292'ROUTE 213 HAS BEEN REALIGNED.  THE MARK IS EASILY RECOVERED WITHOUT
 JV0292'FURTHER MODIFICATION OF DESCRIPTION.
 JV0292
 JV0292                          STATION RECOVERY (2005)
 JV0292
 JV0292'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JV0292'RECOVERED IN GOOD CONDITION.
 JV0292
 JV0292                          STATION RECOVERY (2015)
 JV0292
 JV0292'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0292'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0650 ***********************************************************************
 JV0650  DESIGNATION -  B 123
 JV0650  PID         -  JV0650
 JV0650  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0650  COUNTRY     -  US
 JV0650  USGS QUAD   -  LAUREL (2016)
 JV0650
 JV0650                         *CURRENT SURVEY CONTROL
 JV0650  ______________________________________________________________________
 JV0650* NAD 83(1986) POSITION- 39 06 45.2    (N) 076 49 21.6    (W)   HD_HELD2
 JV0650* NAVD 88 ORTHO HEIGHT -    74.551 (meters)      244.59  (feet) ADJUSTED
 JV0650  ______________________________________________________________________
 JV0650  GEOID HEIGHT    -        -32.308 (meters)                     GEOID18
 JV0650  DYNAMIC HEIGHT  -         74.512 (meters)      244.46  (feet) COMP
 JV0650  MODELED GRAVITY -    980,100.6   (mgal)                       NAVD 88
 JV0650  OBS GRAVITY     -    980,093.7   (mgal)                       GRAV_OBS
 JV0650
 JV0650  VERT ORDER      -  FIRST     CLASS I
 JV0650
 JV0650.The horizontal coordinates were established by autonomous hand held GPS
 JV0650.observations and have an estimated accuracy of +/- 10 meters.
 JV0650
 JV0650.The orthometric height was determined by differential leveling and
 JV0650.adjusted by the NATIONAL GEODETIC SURVEY
 JV0650.in June 1991.
 JV0650
 JV0650.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0650.GEOID18 height accuracy estimate available here.
 JV0650
 JV0650.Click photographs - Photos may exist for this station.
 JV0650
 JV0650.The dynamic height is computed by dividing the NAVD 88
 JV0650.geopotential number by the normal gravity value computed on the
 JV0650.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0650.degrees latitude (g = 980.6199 gals.).
 JV0650
 JV0650.The modeled gravity was interpolated from observed gravity values.
 JV0650
 JV0650.The observed gravity was obtained from relative gravimeter ties
 JV0650.to the IGSN71 gravity network.
 JV0650
 JV0650;                    North         East    Units  Estimated Accuracy
 JV0650;SPC MD       -   160,516.      415,337.      MT  (+/- 10 meters HH2 GPS)
 JV0650
 JV0650_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4241630848(NAD 83)
 JV0650
 JV0650                          SUPERSEDED SURVEY CONTROL
 JV0650
 JV0650  NGVD 29 (11/26/84)   74.782  (m)          245.35   (f) ADJUSTED    1 1
 JV0650
 JV0650.Superseded values are not recommended for survey control.
 JV0650
 JV0650.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0650.See file dsdata.pdf to determine how the superseded data were derived.
 JV0650
 JV0650_MARKER: DB = BENCH MARK DISK
 JV0650_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0650_STAMPING: B 123 1971
 JV0650_MARK LOGO: CGS
 JV0650_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0650_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0650+SATELLITE: SATELLITE OBSERVATIONS - November 04, 2009
 JV0650
 JV0650  HISTORY     - Date     Condition        Report By
 JV0650  HISTORY     - 1971     MONUMENTED       NGS
 JV0650  HISTORY     - 1984     GOOD             LOCSUR
 JV0650  HISTORY     - 20050103 GOOD             URS
 JV0650  HISTORY     - 20091104 GOOD             MDSHA
 JV0650
 JV0650                          STATION DESCRIPTION
 JV0650
 JV0650'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0650'2.1 MI SW FROM FT GEORGE G MEADE JCT.
 JV0650'ABOUT 2.1 MILES SOUTHWEST ALONG BROCK BRIDGE ROAD FROM THE
 JV0650'STATE HIGHWAY 32 OVERPASS FOR THE BALTIMORE AND OHIO RAILROAD
 JV0650'AT FT. GEORGE G. MEADE JUNCTION, 39 FEET SOUTH OF THE CENTER
 JV0650'OF THE INTERSECTION OF THE ROAD AND A GRAVELED ROAD LEADING
 JV0650'TO THE FISHER RESIDENCE, 15 FEET EAST OF THE CENTER LINE OF
 JV0650'BROCK BRIDGE ROAD, 1 FOOT EAST OF POWER POLE NUMBER 210597, AND
 JV0650'ON THE TOP OF A COPPER COATED ROD WHICH PROJECTS 1 INCH AND
 JV0650'IS PROTECTED BY A METAL PIPE WHICH PROJECTS 1 INCH.  THE ROD
 JV0650'WAS DRIVEN TO REFUSAL AT A DEPTH OF 42 FEET.
 JV0650
 JV0650                          STATION RECOVERY (1984)
 JV0650
 JV0650'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1984
 JV0650'RECOVERED IN GOOD CONDITION.
 JV0650
 JV0650                          STATION RECOVERY (2005)
 JV0650
 JV0650'RECOVERY NOTE BY URS COMPANY 2005 (RJ)
 JV0650'RECOVERED IN GOOD CONDITION.
 JV0650
 JV0650                          STATION RECOVERY (2009)
 JV0650
 JV0650'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV0650'TO REACH THE MARK FROM THE INTERSECTION OF BROCK BRIDGE RD AND WHISKEY
 JV0650'BOTTOM RD HEAD NORTH ON BROCK BRIDGE RD. FOR 0.2 MILES. THE FISHER
 JV0650'RESIDENCE IS HOUSE NUMBER 8439.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0275 ***********************************************************************
 HV0275  DESIGNATION -  B 124
 HV0275  PID         -  HV0275
 HV0275  STATE/COUNTY-  MD/DORCHESTER
 HV0275  COUNTRY     -  US
 HV0275  USGS QUAD   -  CHURCH CREEK (2016)
 HV0275
 HV0275                         *CURRENT SURVEY CONTROL
 HV0275  ______________________________________________________________________
 HV0275* NAD 83(1986) POSITION- 38 30 54.5    (N) 076 08 04.6    (W)   HD_HELD2
 HV0275* NAVD 88 ORTHO HEIGHT -     1.959 (meters)        6.43  (feet) ADJUSTED
 HV0275  ______________________________________________________________________
 HV0275  GEOID HEIGHT    -        -35.022 (meters)                     GEOID18
 HV0275  DYNAMIC HEIGHT  -          1.958 (meters)        6.42  (feet) COMP
 HV0275  MODELED GRAVITY -    980,013.7   (mgal)                       NAVD 88
 HV0275
 HV0275  VERT ORDER      -  FIRST     CLASS II
 HV0275
 HV0275.The horizontal coordinates were established by autonomous hand held GPS
 HV0275.observations and have an estimated accuracy of +/- 10 meters.
 HV0275
 HV0275.The orthometric height was determined by differential leveling and
 HV0275.adjusted by the NATIONAL GEODETIC SURVEY
 HV0275.in June 1991.
 HV0275
 HV0275.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0275.GEOID18 height accuracy estimate available here.
 HV0275
 HV0275.Click photographs - Photos may exist for this station.
 HV0275
 HV0275.The dynamic height is computed by dividing the NAVD 88
 HV0275.geopotential number by the normal gravity value computed on the
 HV0275.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0275.degrees latitude (g = 980.6199 gals.).
 HV0275
 HV0275.The modeled gravity was interpolated from observed gravity values.
 HV0275
 HV0275;                    North         East    Units  Estimated Accuracy
 HV0275;SPC MD       -    94,542.      475,471.      MT  (+/- 10 meters HH2 GPS)
 HV0275
 HV0275_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0108363583(NAD 83)
 HV0275
 HV0275                          SUPERSEDED SURVEY CONTROL
 HV0275
 HV0275  NGVD 29 (11/26/84)    2.193  (m)            7.19   (f) ADJUSTED    1 2
 HV0275
 HV0275.Superseded values are not recommended for survey control.
 HV0275
 HV0275.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0275.See file dsdata.pdf to determine how the superseded data were derived.
 HV0275
 HV0275_MARKER: DB = BENCH MARK DISK
 HV0275_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0275+WITH SETTING: INTO GROUND
 HV0275_STAMPING: B 124 1971
 HV0275_MARK LOGO: CGS
 HV0275_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0275+STABILITY: SURFACE MOTION
 HV0275_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0275+SATELLITE: SATELLITE OBSERVATIONS - February 04, 2007
 HV0275
 HV0275  HISTORY     - Date     Condition        Report By
 HV0275  HISTORY     - 1971     MONUMENTED       NGS
 HV0275  HISTORY     - 20060116 GOOD             USPSQD
 HV0275  HISTORY     - 20070204 GOOD             USPSQD
 HV0275
 HV0275                          STATION DESCRIPTION
 HV0275
 HV0275'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0275'1.4 MI NE FROM CHURCH CREEK.
 HV0275'ABOUT 1.4 MILES NORTHEAST ALONG STATE HIGHWAY 16 FROM THE POST
 HV0275'OFFICE AT CHURCH CREEK, 289 FEET SOUTH-SOUTHWEST OF THE CENTER
 HV0275'OF THE JUNCTION OF PLANTATION ROAD THAT LEADS WEST, 42 FEET
 HV0275'SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, 158 FEET SOUTHWEST
 HV0275'OF THE CENTER LINE OF A DRIVEWAY THAT LEADS TO A 2-STORY HOUSE,
 HV0275'85 FEET EAST AND ACROSS THE HIGHWAY FROM THE THIRD TELEPHONE
 HV0275'POLE SOUTHWEST OF PLANTATION ROAD, 1 1/2 FEET SOUTHWEST OF POWER
 HV0275'POLE NUMBER 81, 1.5 FEET NORTHEAST OF A METAL WITNESS POST, ABOUT
 HV0275'LEVEL WITH THE HIGHWAY, AND ON THE TOP OF A 4-FOOT SECTION OF
 HV0275'COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE
 HV0275'DISK IS LEVEL WITH THE SURFACE OF THE GROUND AND IS PROTECTED BY
 HV0275'A 4-INCH METAL PIPE THAT IS LEVEL WITH THE GROUND.
 HV0275
 HV0275                          STATION RECOVERY (2006)
 HV0275
 HV0275'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV0275'LAT AND LON ARE ACCURATE. WITNESS POST SAYS BM48. POLE IS NUMBER 3582
 HV0275'9836
 HV0275
 HV0275                          STATION RECOVERY (2007)
 HV0275
 HV0275'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HV0275'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0695 ***********************************************************************
 JV0695  DESIGNATION -  B 125
 JV0695  PID         -  JV0695
 JV0695  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0695  COUNTRY     -  US
 JV0695  USGS QUAD   -  ROUND BAY (2016)
 JV0695
 JV0695                         *CURRENT SURVEY CONTROL
 JV0695  ______________________________________________________________________
 JV0695* NAD 83(2011) POSITION- 39 04 19.79765(N) 076 32 28.90341(W)   ADJUSTED
 JV0695* NAD 83(2011) ELLIP HT-   -21.370 (meters)        (01/30/26)   ADJUSTED
 JV0695* NAD 83(2011) EPOCH   -  2010.00
 JV0695* NAVD 88 ORTHO HEIGHT -    11.744 (meters)       38.53  (feet) ADJUSTED
 JV0695  ______________________________________________________________________
 JV0695  GEOID HEIGHT    -        -33.106 (meters)                     GEOID18
 JV0695  NAD 83(2011) X  -  1,154,003.175 (meters)                     COMP
 JV0695  NAD 83(2011) Y  - -4,822,102.049 (meters)                     COMP
 JV0695  NAD 83(2011) Z  -  3,998,526.555 (meters)                     COMP
 JV0695  LAPLACE CORR    -         -4.33  (seconds)                    DEFLEC18
 JV0695  DYNAMIC HEIGHT  -         11.738 (meters)       38.51  (feet) COMP
 JV0695  MODELED GRAVITY -    980,080.1   (mgal)                       NAVD 88
 JV0695
 JV0695  VERT ORDER      -  FIRST     CLASS II
 JV0695
 JV0695  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0695  Standards:
 JV0695         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0695            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0695  -------------------------------------------------------------------
 JV0695  NETWORK    0.79   1.88           0.35   0.28   0.96     -0.30812216
 JV0695  -------------------------------------------------------------------
 JV0695  Click here for local accuracies and other accuracy information.
 JV0695
 JV0695.The horizontal coordinates were established by GPS observations
 JV0695.and adjusted by the MD DOT HIGHWAY ADMIN in January 2026.
 JV0695
 JV0695.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 JV0695.frame has been affixed to the stable North American tectonic plate 
 JV0695
 JV0695.The horizontal coordinates are valid at the epoch date displayed above
 JV0695.which is a decimal equivalence of Year/Month/Day.
 JV0695
 JV0695.The orthometric height was determined by differential leveling and
 JV0695.adjusted by the NATIONAL GEODETIC SURVEY
 JV0695.in June 1991.
 JV0695
 JV0695.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0695.GEOID18 height accuracy estimate available here.
 JV0695
 JV0695.Click photographs - Photos may exist for this station.
 JV0695
 JV0695.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0695
 JV0695.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0695
 JV0695.The ellipsoidal height was determined by GPS observations
 JV0695.and is referenced to NAD 83.
 JV0695
 JV0695.The dynamic height is computed by dividing the NAVD 88
 JV0695.geopotential number by the normal gravity value computed on the
 JV0695.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0695.degrees latitude (g = 980.6199 gals.).
 JV0695
 JV0695.The modeled gravity was interpolated from observed gravity values.
 JV0695
 JV0695. The following values were computed from the NAD 83(2011) position.
 JV0695
 JV0695;                    North         East     Units Scale Factor Converg.
 JV0695;SPC MD       -   156,117.129   439,687.840   MT  0.99995570   +0 17 16.3
 JV0695;SPC MD       -   512,194.28  1,442,542.52   sFT  0.99995570   +0 17 16.3
 JV0695;UTM  18      - 4,325,915.568   366,663.101   MT  0.99981892   -0 58 18.0
 JV0695
 JV0695!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0695!SPC MD       -   1.00000335  x   0.99995570  =   0.99995905
 JV0695!UTM  18      -   1.00000335  x   0.99981892  =   0.99982227
 JV0695
 JV0695_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6666325915(NAD 83)
 JV0695
 JV0695                          SUPERSEDED SURVEY CONTROL
 JV0695
 JV0695  NGVD 29 (11/26/84)   11.989  (m)           39.33   (f) ADJUSTED    1 2
 JV0695
 JV0695.Superseded values are not recommended for survey control.
 JV0695
 JV0695.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0695.See file dsdata.pdf to determine how the superseded data were derived.
 JV0695
 JV0695_MARKER: DB = BENCH MARK DISK
 JV0695_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0695+WITH SETTING: INTO GROUND
 JV0695_STAMPING: B 125 1971
 JV0695_MARK LOGO: CGS
 JV0695_PROJECTION: FLUSH
 JV0695_MAGNETIC: I = MARKER IS A STEEL ROD
 JV0695_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0695_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0695+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2025
 JV0695
 JV0695  HISTORY     - Date     Condition        Report By
 JV0695  HISTORY     - 1971     MONUMENTED       NGS
 JV0695  HISTORY     - 20000217 GOOD             USPSQD
 JV0695  HISTORY     - 20051215 GOOD             USPSQD
 JV0695  HISTORY     - 20160820 GOOD             USPSQD
 JV0695  HISTORY     - 20250320 GOOD             MDSHA
 JV0695
 JV0695                          STATION DESCRIPTION
 JV0695
 JV0695'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0695'7.2 MI SE FROM GLEN BURNIE.
 JV0695'ABOUT 7.25 MILES SOUTHEAST ALONG STATE HIGHWAY 2 FROM THE POST
 JV0695'OFFICE AT GLEN BURNIE, ABOUT 0.7 MILE SOUTHEAST OF THE
 JV0695'INTERSECTION OF STATE HIGHWAY 648, AT THE JUNCTION OF CYPRESS
 JV0695'CREEK ROAD LEADING SOUTHWEST TO SEVERNA PARK, 44 1/2 FEET
 JV0695'SOUTHWEST OF THE CENTER LINE OF THE SOUTHWEST LANES OF THE
 JV0695'HIGHWAY, 33 FEET NORTHWEST OF THE CENTER LINE OF CYPRESS CREEK
 JV0695'ROAD, 11 1/2 FEET WEST OF THE CURB AROUND THE INTERSECTION, 4
 JV0695'FEET WEST OF POWER POLE NUMBER 370426, 14 FEET SOUTH OF AN
 JV0695'8-INCH METAL GUY POLE WHICH BEARS A SIGNAL LIGHT, 2 FEET
 JV0695'SOUTHEAST OF A METAL WITNESS POST, AND ON THE TOP OF A 4-FOOT
 JV0695'SECTION OF COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE
 JV0695'PLATE.  THE DISK IS LEVEL WITH THE SURFACE OF THE GROUND AND IS
 JV0695'PROTECTED BY A 6-INCH METAL PIPE THAT PROJECTS 1 INCH.
 JV0695'NOTE-- THIS MARK IS ALSO 1.6 MILES NORTHWEST ALONG STATE
 JV0695'HIGHWAY 450 FROM THE NORTHEAST END OF THE HIGHWAY BRIDGE OVER
 JV0695'THE SEVERN RIVER AT ANNAPOLIS, THENCE 4.9 MILES NORTHWEST ALONG
 JV0695'STATE HIGHWAY 2.
 JV0695
 JV0695                          STATION RECOVERY (2000)
 JV0695
 JV0695'RECOVERY NOTE BY US POWER SQUADRON 2000
 JV0695'RECOVERED IN GOOD CONDITION.
 JV0695
 JV0695                          STATION RECOVERY (2005)
 JV0695
 JV0695'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV0695'RECOVERED IN GOOD CONDITION.
 JV0695
 JV0695                          STATION RECOVERY (2016)
 JV0695
 JV0695'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 JV0695'RECOVERED IN GOOD CONDITION.
 JV0695
 JV0695                          STATION RECOVERY (2025)
 JV0695
 JV0695'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 JV0695'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0169 ***********************************************************************
 HV0169  DESIGNATION -  B 126
 HV0169  PID         -  HV0169
 HV0169  STATE/COUNTY-  MD/QUEEN ANNES
 HV0169  COUNTRY     -  US
 HV0169  USGS QUAD   -  KENT ISLAND (2016)
 HV0169
 HV0169                         *CURRENT SURVEY CONTROL
 HV0169  ______________________________________________________________________
 HV0169* NAD 83(1986) POSITION- 38 58 28.28   (N) 076 19 33.22   (W)   HD_HELD1
 HV0169* NAVD 88 ORTHO HEIGHT -     4.669 (meters)       15.32  (feet) ADJUSTED
 HV0169  ______________________________________________________________________
 HV0169  GEOID HEIGHT    -        -33.587 (meters)                     GEOID18
 HV0169  DYNAMIC HEIGHT  -          4.666 (meters)       15.31  (feet) COMP
 HV0169  MODELED GRAVITY -    980,080.9   (mgal)                       NAVD 88
 HV0169
 HV0169  VERT ORDER      -  FIRST     CLASS II
 HV0169
 HV0169.This mark is at Bay Bridge Airport (W29)
 HV0169
 HV0169.The horizontal coordinates were determined by differentially corrected
 HV0169.hand held GPS observations or other comparable positioning techniques
 HV0169.and have an estimated accuracy of +/- 3 meters.
 HV0169
 HV0169.The orthometric height was determined by differential leveling and
 HV0169.adjusted by the NATIONAL GEODETIC SURVEY
 HV0169.in June 1991.
 HV0169
 HV0169.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0169.GEOID18 height accuracy estimate available here.
 HV0169
 HV0169.Click photographs - Photos may exist for this station.
 HV0169
 HV0169.The dynamic height is computed by dividing the NAVD 88
 HV0169.geopotential number by the normal gravity value computed on the
 HV0169.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0169.degrees latitude (g = 980.6199 gals.).
 HV0169
 HV0169.The modeled gravity was interpolated from observed gravity values.
 HV0169
 HV0169;                    North         East    Units  Estimated Accuracy
 HV0169;SPC MD       -   145,393.6     458,412.9     MT  (+/- 3 meters HH1 GPS) 
 HV0169
 HV0169_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8514514785(NAD 83)
 HV0169
 HV0169                          SUPERSEDED SURVEY CONTROL
 HV0169
 HV0169  NGVD 29 (11/26/84)    4.905  (m)           16.09   (f) ADJUSTED    1 2
 HV0169
 HV0169.Superseded values are not recommended for survey control.
 HV0169
 HV0169.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0169.See file dsdata.pdf to determine how the superseded data were derived.
 HV0169
 HV0169_MARKER: DB = BENCH MARK DISK
 HV0169_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV0169+WITH SETTING: PAVEMENT
 HV0169_SP_SET: DOOR FOUNDATION
 HV0169_STAMPING: B 126 1971
 HV0169_MARK LOGO: CGS
 HV0169_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0169+STABILITY: SURFACE MOTION
 HV0169_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0169+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2012
 HV0169
 HV0169  HISTORY     - Date     Condition        Report By
 HV0169  HISTORY     - 1971     MONUMENTED       NGS
 HV0169  HISTORY     - 1983     GOOD             USPSQD
 HV0169  HISTORY     - 20000111 GOOD             USPSQD
 HV0169  HISTORY     - 20010331 GOOD             NGS
 HV0169  HISTORY     - 20051215 GOOD             USPSQD
 HV0169  HISTORY     - 20120726 GOOD             ARCSHE
 HV0169
 HV0169                          STATION DESCRIPTION
 HV0169
 HV0169'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0169'0.4 MI SW FROM STEVENSVILLE.
 HV0169'ABOUT 0.45 MILE SOUTHWEST ALONG STATE HIGHWAY 8 FROM THE
 HV0169'INTERSECTION OF U.S. HIGHWAYS 50 AND 301 AT STEVENSVILLE, AT
 HV0169'THE BAY BRIDGE AIRPORT, SET IN THE TOP OF THE CONCRETE FOUNDATION
 HV0169'FOR THE TRACK FOR THE SLIDING DOOR ON THE NORTH SIDE OF THE MAIN
 HV0169'HANGAR AT THE AIRPORT, 28.2 FEET EAST OF THE NORTHWEST CORNER OF
 HV0169'THE BUILDING, 4.2 FEET EAST OF THE WEST EDGE OF THE DOOR,
 HV0169'306 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT
 HV0169'LEVEL WITH THE CONCRETE APRON.
 HV0169
 HV0169                          STATION RECOVERY (1983)
 HV0169
 HV0169'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0169'RECOVERED IN GOOD CONDITION.
 HV0169
 HV0169                          STATION RECOVERY (2000)
 HV0169
 HV0169'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 HV0169'HANGAR DOOR AND NW WALL HAVE BEEN REBUILT.  DISK IN NOW .8 FEET INSIDE
 HV0169'HANGAR NW WALL, 6.9 FEET SE OF BUILDING CORNER STEEL FRAME IN OLD DOOR
 HV0169'TRACK.
 HV0169
 HV0169                          STATION RECOVERY (2001)
 HV0169
 HV0169'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0169'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0169
 HV0169                          STATION RECOVERY (2005)
 HV0169
 HV0169'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV0169'RECOVERED IN GOOD CONDITION.
 HV0169
 HV0169                          STATION RECOVERY (2012)
 HV0169
 HV0169'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2012 (MRA)
 HV0169'RECOVERED IN GOOD CONDITION.
 HV0169'
 HV0169'NOTE-INSIDE THE OLD AIRCRAFT HANGAR, JUST EAST OF THE ADMINISTRATION
 HV0169'BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0111 ***********************************************************************
 HV0111  DESIGNATION -  B 127
 HV0111  PID         -  HV0111
 HV0111  STATE/COUNTY-  MD/TALBOT
 HV0111  COUNTRY     -  US
 HV0111  USGS QUAD   -  EASTON (2016)
 HV0111
 HV0111                         *CURRENT SURVEY CONTROL
 HV0111  ______________________________________________________________________
 HV0111* NAD 83(1986) POSITION- 38 49 28.24   (N) 076 03 35.75   (W)   HD_HELD1
 HV0111* NAVD 88 ORTHO HEIGHT -    17.079 (meters)       56.03  (feet) ADJUSTED
 HV0111  ______________________________________________________________________
 HV0111  GEOID HEIGHT    -        -34.588 (meters)                     GEOID18
 HV0111  DYNAMIC HEIGHT  -         17.069 (meters)       56.00  (feet) COMP
 HV0111  MODELED GRAVITY -    980,041.8   (mgal)                       NAVD 88
 HV0111
 HV0111  VERT ORDER      -  SECOND    CLASS I
 HV0111
 HV0111.The horizontal coordinates were determined by differentially corrected
 HV0111.hand held GPS observations or other comparable positioning techniques
 HV0111.and have an estimated accuracy of +/- 3 meters.
 HV0111
 HV0111.The orthometric height was determined by differential leveling and
 HV0111.adjusted by the NATIONAL GEODETIC SURVEY
 HV0111.in September 2004.
 HV0111
 HV0111.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0111.GEOID18 height accuracy estimate available here.
 HV0111
 HV0111.Click photographs - Photos may exist for this station.
 HV0111
 HV0111.The dynamic height is computed by dividing the NAVD 88
 HV0111.geopotential number by the normal gravity value computed on the
 HV0111.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0111.degrees latitude (g = 980.6199 gals.).
 HV0111
 HV0111.The modeled gravity was interpolated from observed gravity values.
 HV0111
 HV0111;                    North         East    Units  Estimated Accuracy
 HV0111;SPC MD       -   128,945.8     481,630.1     MT  (+/- 3 meters HH1 GPS) 
 HV0111
 HV0111_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0799197836(NAD 83)
 HV0111
 HV0111                          SUPERSEDED SURVEY CONTROL
 HV0111
 HV0111  NAVD 88 (06/15/91)   17.104  (m)           56.12   (f) SUPERSEDED  1 2
 HV0111  NGVD 29 (11/26/84)   17.338  (m)           56.88   (f) ADJUSTED    1 2
 HV0111
 HV0111.Superseded values are not recommended for survey control.
 HV0111
 HV0111.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0111.See file dsdata.pdf to determine how the superseded data were derived.
 HV0111
 HV0111_MARKER: DB = BENCH MARK DISK
 HV0111_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0111+WITH SETTING: INTO GROUND
 HV0111_STAMPING: B 127 1971
 HV0111_MARK LOGO: CGS
 HV0111_PROJECTION: RECESSED 5 CENTIMETERS
 HV0111_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0111_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0111_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0111+SATELLITE: SATELLITE OBSERVATIONS - April 10, 2012
 HV0111
 HV0111  HISTORY     - Date     Condition        Report By
 HV0111  HISTORY     - 1971     MONUMENTED       NGS
 HV0111  HISTORY     - 1974     GOOD             NGS
 HV0111  HISTORY     - 19991007 GOOD             MDSHA
 HV0111  HISTORY     - 20020222 GOOD             USPSQD
 HV0111  HISTORY     - 20110220 GOOD             NGS
 HV0111  HISTORY     - 20120410 GOOD             NGS
 HV0111
 HV0111                          STATION DESCRIPTION
 HV0111
 HV0111'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0111'3.6 MI N FROM EASTON.
 HV0111'ABOUT 3.6 MILES NORTH ALONG U.S. HIGHWAY 50 FROM THE INTERSECTION
 HV0111'OF STATE HIGHWAY 33, (DOVER ROAD) AT EASTON, AT THE JUNCTION OF
 HV0111'A FARM ROAD LEADING EAST, 54 FEET EAST OF THE CENTER LINE OF THE
 HV0111'EAST LANES OF THE HIGHWAY, 15 FEET SOUTH OF THE CENTER LINE OF
 HV0111'THE FARM ROAD, 13 1/2 FEET NORTHEAST OF A TELEPHONE UNDERGROUND
 HV0111'CABLE MARKER NO. 10, 2 1/2 FEET SOUTHWEST OF A POWER LINE POLE,
 HV0111'1.4 FEET NORTH OF A METAL WITNESS POST, AND ON THE TOP OF A 4-FOOT
 HV0111'COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.
 HV0111'THE DISK IS LEVEL WITH THE GROUND AND ENCASED IN A 4 INCH METAL
 HV0111'PIPE THAT IS LEVEL WITH THE GROUND.  NOTE-- NOV. 29, 1974-FARM
 HV0111'IS BEING RECONSTRUCTED INTO THE HOG NECK GOLF COURSE.
 HV0111
 HV0111                          STATION RECOVERY (1974)
 HV0111
 HV0111'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 HV0111'RECOVERED IN GOOD CONDITION.
 HV0111
 HV0111                          STATION RECOVERY (1999)
 HV0111
 HV0111'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HV0111'THE MARK WAS RECOVERED IN GOOD CONDITION AS PER 1997 RECOVERY
 HV0111'DESCRIPTION.
 HV0111
 HV0111                          STATION RECOVERY (2002)
 HV0111
 HV0111'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0111'CHANGE REFERENCED FARM ROAD TO READ PAVED SERVICE ROAD.  POWER POLE
 HV0111'HAS BEEN REPLACED BY 334-30 CHOPTANK NO. 1. MARK NOW 2.5 FT E OF POWER
 HV0111'POLE INSIDE GOLF COURSE FENCE.  WITNESS POST MOVED TO FENCE LINE. MARK
 HV0111'NOW 4.5 FT E OF THE WITNESS POST AND 3 INCHES BELOW GROUND LEVEL.
 HV0111
 HV0111                          STATION RECOVERY (2011)
 HV0111
 HV0111'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 HV0111'REFERENCES NOTED IN 2002 RECOVERY BY JKW CHECKED.
 HV0111
 HV0111                          STATION RECOVERY (2012)
 HV0111
 HV0111'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRA)
 HV0111'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0538 ***********************************************************************
 HV0538  DESIGNATION -  B 128
 HV0538  PID         -  HV0538
 HV0538  STATE/COUNTY-  MD/ST MARYS
 HV0538  COUNTRY     -  US
 HV0538  USGS QUAD   -  LEONARDTOWN (2016)
 HV0538
 HV0538                         *CURRENT SURVEY CONTROL
 HV0538  ______________________________________________________________________
 HV0538* NAD 83(1986) POSITION- 38 19 29.     (N) 076 43 22.     (W)   SCALED
 HV0538* NAVD 88 ORTHO HEIGHT -     3.088 (meters)       10.13  (feet) ADJUSTED
 HV0538  ______________________________________________________________________
 HV0538  GEOID HEIGHT    -        -33.743 (meters)                     GEOID18
 HV0538  DYNAMIC HEIGHT  -          3.086 (meters)       10.12  (feet) COMP
 HV0538  MODELED GRAVITY -    980,028.6   (mgal)                       NAVD 88
 HV0538
 HV0538  VERT ORDER      -  FIRST     CLASS II
 HV0538
 HV0538.The horizontal coordinates were scaled from a map and have
 HV0538.an estimated accuracy of +/- 6 seconds.
 HV0538
 HV0538.The orthometric height was determined by differential leveling and
 HV0538.adjusted by the NATIONAL GEODETIC SURVEY
 HV0538.in June 1991.
 HV0538
 HV0538.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0538.GEOID18 height accuracy estimate available here.
 HV0538
 HV0538.Click photographs - Photos may exist for this station.
 HV0538
 HV0538.The dynamic height is computed by dividing the NAVD 88
 HV0538.geopotential number by the normal gravity value computed on the
 HV0538.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0538.degrees latitude (g = 980.6199 gals.).
 HV0538
 HV0538.The modeled gravity was interpolated from observed gravity values.
 HV0538
 HV0538;                    North         East    Units  Estimated Accuracy
 HV0538;SPC MD       -    73,080.      424,240.      MT  (+/- 180 meters Scaled)
 HV0538
 HV0538_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH494432(NAD 83)
 HV0538
 HV0538                          SUPERSEDED SURVEY CONTROL
 HV0538
 HV0538  NGVD 29 (11/26/84)    3.328  (m)           10.92   (f) ADJUSTED    1 2
 HV0538
 HV0538.Superseded values are not recommended for survey control.
 HV0538
 HV0538.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0538.See file dsdata.pdf to determine how the superseded data were derived.
 HV0538
 HV0538_MARKER: DB = BENCH MARK DISK
 HV0538_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0538_SP_SET: BRIDGE GUARDRAIL
 HV0538_STAMPING: B 128 1971
 HV0538_MARK LOGO: CGS
 HV0538_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0538_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0538
 HV0538  HISTORY     - Date     Condition        Report By
 HV0538  HISTORY     - 1971     MONUMENTED       NGS
 HV0538  HISTORY     - 20020329 GOOD             MDSHA
 HV0538
 HV0538                          STATION DESCRIPTION
 HV0538
 HV0538'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0538'AT CLEMENTS.
 HV0538'AT CLEMENTS, ABOUT 0.15 MILE WEST ALONG STATE HIGHWAY 234 FROM
 HV0538'THE POST OFFICE, AT A CONCRETE BRIDGE OVER ST CLEMENT CREEK, 17
 HV0538'FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, SET IN THE TOP
 HV0538'(INSIDE OF THE CONCRETE GUARD RAIL) OF THE NORTHWEST END OF THE
 HV0538'SOUTHWEST CONCRETE ABUTMENT OF THE 117 FEET LONG BRIDGE OVER THE
 HV0538'CREEK AND 1/2 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
 HV0538
 HV0538                          STATION RECOVERY (2002)
 HV0538
 HV0538'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0538'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0601 ***********************************************************************
 HV0601  DESIGNATION -  B 129
 HV0601  PID         -  HV0601
 HV0601  STATE/COUNTY-  MD/CHARLES
 HV0601  COUNTRY     -  US
 HV0601  USGS QUAD   -  POPES CREEK (2016)
 HV0601
 HV0601                         *CURRENT SURVEY CONTROL
 HV0601  ______________________________________________________________________
 HV0601* NAD 83(1986) POSITION- 38 28 18.     (N) 076 59 22.     (W)   SCALED
 HV0601* NAVD 88 ORTHO HEIGHT -    40.261 (meters)      132.09  (feet) ADJUSTED
 HV0601  ______________________________________________________________________
 HV0601  GEOID HEIGHT    -        -33.162 (meters)                     GEOID18
 HV0601  DYNAMIC HEIGHT  -         40.236 (meters)      132.01  (feet) COMP
 HV0601  MODELED GRAVITY -    980,018.7   (mgal)                       NAVD 88
 HV0601
 HV0601  VERT ORDER      -  FIRST     CLASS II
 HV0601
 HV0601.The horizontal coordinates were scaled from a map and have
 HV0601.an estimated accuracy of +/- 6 seconds.
 HV0601
 HV0601.The orthometric height was determined by differential leveling and
 HV0601.adjusted by the NATIONAL GEODETIC SURVEY
 HV0601.in June 1991.
 HV0601
 HV0601.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0601.GEOID18 height accuracy estimate available here.
 HV0601
 HV0601.Click photographs - Photos may exist for this station.
 HV0601
 HV0601.The dynamic height is computed by dividing the NAVD 88
 HV0601.geopotential number by the normal gravity value computed on the
 HV0601.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0601.degrees latitude (g = 980.6199 gals.).
 HV0601
 HV0601.The modeled gravity was interpolated from observed gravity values.
 HV0601
 HV0601;                    North         East    Units  Estimated Accuracy
 HV0601;SPC MD       -    89,360.      400,920.      MT  (+/- 180 meters Scaled)
 HV0601
 HV0601_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH264600(NAD 83)
 HV0601
 HV0601                          SUPERSEDED SURVEY CONTROL
 HV0601
 HV0601  NGVD 29 (11/26/84)   40.496  (m)          132.86   (f) ADJUSTED    1 2
 HV0601
 HV0601.Superseded values are not recommended for survey control.
 HV0601
 HV0601.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0601.See file dsdata.pdf to determine how the superseded data were derived.
 HV0601
 HV0601_MARKER: DB = BENCH MARK DISK
 HV0601_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0601_SP_SET: CULVERT
 HV0601_STAMPING: B 129 1971
 HV0601_MARK LOGO: CGS
 HV0601_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0601_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0601+STABILITY: SURFACE MOTION
 HV0601
 HV0601  HISTORY     - Date     Condition        Report By
 HV0601  HISTORY     - 1971     MONUMENTED       NGS
 HV0601  HISTORY     - 20020725 GOOD             MDSHA
 HV0601
 HV0601                          STATION DESCRIPTION
 HV0601
 HV0601'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0601'4 MI S FROM LA PLATA.
 HV0601'ABOUT 4.0 MILES SOUTH ALONG U.S. HIGHWAY 301 FROM THE
 HV0601'INTERSECTION OF STATE HIGHWAY 6 AT LA PLATA, AT A CONCRETE
 HV0601'CULVERT UNDER U.S. HIGHWAY 301, 62 FEET EAST OF THE CENTER LINE
 HV0601'OF THE HIGHWAY AND ABOUT 12 FEET BELOW THE LEVEL OF THE HIGHWAY.
 HV0601
 HV0601                          STATION RECOVERY (2002)
 HV0601
 HV0601'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0601'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2147 ***********************************************************************
 JV2147  DESIGNATION -  B 13
 JV2147  PID         -  JV2147
 JV2147  STATE/COUNTY-  MD/FREDERICK
 JV2147  COUNTRY     -  US
 JV2147  USGS QUAD   -  URBANA (2016)
 JV2147
 JV2147                         *CURRENT SURVEY CONTROL
 JV2147  ______________________________________________________________________
 JV2147* NAD 83(1986) POSITION- 39 21 55.4    (N) 077 22 17.9    (W)   HD_HELD2
 JV2147* NAVD 88 ORTHO HEIGHT -    83.509 (meters)      273.98  (feet) ADJUSTED
 JV2147  ______________________________________________________________________
 JV2147  GEOID HEIGHT    -        -32.508 (meters)                     GEOID18
 JV2147  DYNAMIC HEIGHT  -         83.464 (meters)      273.83  (feet) COMP
 JV2147  MODELED GRAVITY -    980,087.0   (mgal)                       NAVD 88
 JV2147
 JV2147  VERT ORDER      -  FIRST     CLASS II
 JV2147
 JV2147.The horizontal coordinates were established by autonomous hand held GPS
 JV2147.observations and have an estimated accuracy of +/- 10 meters.
 JV2147
 JV2147.The orthometric height was determined by differential leveling and
 JV2147.adjusted by the NATIONAL GEODETIC SURVEY
 JV2147.in June 1991.
 JV2147
 JV2147.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2147.GEOID18 height accuracy estimate available here.
 JV2147
 JV2147.Click photographs - Photos may exist for this station.
 JV2147
 JV2147.The dynamic height is computed by dividing the NAVD 88
 JV2147.geopotential number by the normal gravity value computed on the
 JV2147.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2147.degrees latitude (g = 980.6199 gals.).
 JV2147
 JV2147.The modeled gravity was interpolated from observed gravity values.
 JV2147
 JV2147;                    North         East    Units  Estimated Accuracy
 JV2147;SPC MD       -   188,635.      367,973.      MT  (+/- 10 meters HH2 GPS)
 JV2147
 JV2147_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9568460008(NAD 83)
 JV2147
 JV2147                          SUPERSEDED SURVEY CONTROL
 JV2147
 JV2147  NGVD 29 (11/26/84)   83.729  (m)          274.70   (f) ADJUSTED    1 2
 JV2147
 JV2147.Superseded values are not recommended for survey control.
 JV2147
 JV2147.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2147.See file dsdata.pdf to determine how the superseded data were derived.
 JV2147
 JV2147_MARKER: DB = BENCH MARK DISK
 JV2147_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2147_SP_SET: FOUNDATION
 JV2147_STAMPING: B 13 1935
 JV2147_MARK LOGO: CGS
 JV2147_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2147_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2147+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2014
 JV2147
 JV2147  HISTORY     - Date     Condition        Report By
 JV2147  HISTORY     - 1935     MONUMENTED       CGS
 JV2147  HISTORY     - 20141204 GOOD             NAGEL
 JV2147
 JV2147                          STATION DESCRIPTION
 JV2147
 JV2147'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2147'1.1 MI E FROM FREDERICK JUNCTION.
 JV2147'ABOUT 1.1 MILES EAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2147'THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, ABOUT 0.2
 JV2147'MILE WEST OF THE STATION AT REELS MILL, AT AN OLD COAL CHUTE, IN
 JV2147'THE CENTER OF THE TOP OF THE CONCRETE FOUNDATION, BETWEEN THE
 JV2147'TRACKS, 22.3 FEET SOUTH OF THE SOUTH RAIL OF THE WESTBOUND
 JV2147'TRACK, AND 21.6 FEET NORTH OF THE NORTH RAIL OF THE EASTBOUND
 JV2147'TRACK.  A STANDARD DISK, STAMPED B 13 1935.
 JV2147
 JV2147                          STATION RECOVERY (2014)
 JV2147
 JV2147'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2014 (REN)
 JV2147'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0461 ***********************************************************************
 HV0461  DESIGNATION -  B 130
 HV0461  PID         -  HV0461
 HV0461  STATE/COUNTY-  MD/DORCHESTER
 HV0461  COUNTRY     -  US
 HV0461  USGS QUAD   -  HONGA (2016)
 HV0461
 HV0461                         *CURRENT SURVEY CONTROL
 HV0461  ______________________________________________________________________
 HV0461* NAD 83(1986) POSITION- 38 17 57.     (N) 076 12 23.     (W)   SCALED
 HV0461* NAVD 88 ORTHO HEIGHT -     0.402 (meters)        1.32  (feet) ADJUSTED
 HV0461  ______________________________________________________________________
 HV0461  GEOID HEIGHT    -        -35.237 (meters)                     GEOID18
 HV0461  DYNAMIC HEIGHT  -          0.401 (meters)        1.32  (feet) COMP
 HV0461  MODELED GRAVITY -    979,989.9   (mgal)                       NAVD 88
 HV0461
 HV0461  VERT ORDER      -  FIRST     CLASS II
 HV0461
 HV0461.The horizontal coordinates were scaled from a map and have
 HV0461.an estimated accuracy of +/- 6 seconds.
 HV0461
 HV0461.The orthometric height was determined by differential leveling and
 HV0461.adjusted by the NATIONAL GEODETIC SURVEY
 HV0461.in June 1991.
 HV0461
 HV0461.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0461.GEOID18 height accuracy estimate available here.
 HV0461
 HV0461.Click photographs - Photos may exist for this station.
 HV0461
 HV0461.The dynamic height is computed by dividing the NAVD 88
 HV0461.geopotential number by the normal gravity value computed on the
 HV0461.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0461.degrees latitude (g = 980.6199 gals.).
 HV0461
 HV0461.The modeled gravity was interpolated from observed gravity values.
 HV0461
 HV0461;                    North         East    Units  Estimated Accuracy
 HV0461;SPC MD       -    70,510.      469,420.      MT  (+/- 180 meters Scaled)
 HV0461
 HV0461_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH945396(NAD 83)
 HV0461
 HV0461                          SUPERSEDED SURVEY CONTROL
 HV0461
 HV0461  NGVD 29 (11/26/84)    0.645  (m)            2.12   (f) ADJUSTED    1 2
 HV0461
 HV0461.Superseded values are not recommended for survey control.
 HV0461
 HV0461.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0461.See file dsdata.pdf to determine how the superseded data were derived.
 HV0461
 HV0461_MARKER: DB = BENCH MARK DISK
 HV0461_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0461_STAMPING: B 130 1971
 HV0461_MARK LOGO: CGS
 HV0461_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0461
 HV0461  HISTORY     - Date     Condition        Report By
 HV0461  HISTORY     - 1971     MONUMENTED       NGS
 HV0461  HISTORY     - 20060326 MARK NOT FOUND   USPSQD
 HV0461
 HV0461                          STATION DESCRIPTION
 HV0461
 HV0461'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0461'3.2 MI S FROM FISHING CREEK.
 HV0461'ABOUT 3.15 MILES SOUTH ALONG HOOPER ISLAND ROAD FROM THE POST
 HV0461'OFFICE AT FISHING CREEK, NEAR THE SOUTHEAST POINT OF UPPER
 HV0461'HOOPER ISLAND, AT FERRY POINT, 132.0 FEET NORTH OF THE NORTH
 HV0461'CORNER OF THE WOODEN BRIDGE THAT CONNECTS UPPER HOOPER ISLAND
 HV0461'AND MIDDLE HOOPER ISLAND, 52 FEET NORTHEAST OF THE CENTER LINE OF
 HV0461'THE ROAD, 37.8 FEET NORTH OF THE NORTH CORNER OF A SMALL BUILDING,
 HV0461'12 FEET EAST-SOUTHEAST OF POWER POLE NUMBER 30H-13, 1.0 FOOT
 HV0461'NORTHEAST OF A METAL WITNESS POST, ABOUT 2 FEET BELOW THE LEVEL
 HV0461'OF THE ROAD, AND ON THE TOP OF A COPPER COATED ROD PROJECTING
 HV0461'2 INCHES AND IS PROTECTED BY A 6-INCH METAL PIPE PROJECTING
 HV0461'3 INCHES.  THE ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 36 INCHES.
 HV0461'THIS MARK IS ALSO ABOUT 3.2 MILES NORTH-NORTHWEST ALONG HOOPER
 HV0461'ISLAND ROAD FROM THE HOOPERSVILLE METHODIST EPISCOPAL CHURCH.
 HV0461
 HV0461                          STATION RECOVERY (2006)
 HV0461
 HV0461'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 HV0461'SEE HV0460 AND HV0462.  WOODEN BRIDGE, BRIDGE ACCESS RAMPS,
 HV0461'GUARDRAILS, BRIDGE TENDER SHACK AND LIGHT STRUCTURES DO NOT EXIST.
 HV0461'ALL HAVE BEEN REPLACED BY A NEW, HIGH CONCRETE FIXED BRIDGE IN 1980.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1509 ***********************************************************************
 HV1509  DESIGNATION -  B 131
 HV1509  PID         -  HV1509
 HV1509  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1509  COUNTRY     -  US
 HV1509  USGS QUAD   -  BRISTOL (2016)
 HV1509
 HV1509                         *CURRENT SURVEY CONTROL
 HV1509  ______________________________________________________________________
 HV1509* NAD 83(1986) POSITION- 38 49 03.9    (N) 076 37 41.9    (W)   HD_HELD2
 HV1509* NAVD 88 ORTHO HEIGHT -    51.168 (meters)      167.87  (feet) ADJUSTED
 HV1509  ______________________________________________________________________
 HV1509  GEOID HEIGHT    -        -33.279 (meters)                     GEOID18
 HV1509  DYNAMIC HEIGHT  -         51.139 (meters)      167.78  (feet) COMP
 HV1509  MODELED GRAVITY -    980,055.5   (mgal)                       NAVD 88
 HV1509
 HV1509  VERT ORDER      -  FIRST     CLASS I
 HV1509
 HV1509.The horizontal coordinates were established by autonomous hand held GPS
 HV1509.observations and have an estimated accuracy of +/- 10 meters.
 HV1509
 HV1509.The orthometric height was determined by differential leveling and
 HV1509.adjusted by the NATIONAL GEODETIC SURVEY
 HV1509.in June 1991.
 HV1509
 HV1509.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1509.GEOID18 height accuracy estimate available here.
 HV1509
 HV1509.Click photographs - Photos may exist for this station.
 HV1509
 HV1509.The dynamic height is computed by dividing the NAVD 88
 HV1509.geopotential number by the normal gravity value computed on the
 HV1509.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1509.degrees latitude (g = 980.6199 gals.).
 HV1509
 HV1509.The modeled gravity was interpolated from observed gravity values.
 HV1509
 HV1509;                    North         East    Units  Estimated Accuracy
 HV1509;SPC MD       -   127,841.      432,279.      MT  (+/- 10 meters HH2 GPS)
 HV1509
 HV1509_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5863797811(NAD 83)
 HV1509
 HV1509                          SUPERSEDED SURVEY CONTROL
 HV1509
 HV1509  NGVD 29 (11/26/84)   51.406  (m)          168.65   (f) ADJUSTED    1 1
 HV1509
 HV1509.Superseded values are not recommended for survey control.
 HV1509
 HV1509.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1509.See file dsdata.pdf to determine how the superseded data were derived.
 HV1509
 HV1509_MARKER: DB = BENCH MARK DISK
 HV1509_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV1509+WITH SETTING: INTO GROUND
 HV1509_STAMPING: B 131 1971
 HV1509_MARK LOGO: CGS
 HV1509_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1509+STABILITY: SURFACE MOTION
 HV1509
 HV1509  HISTORY     - Date     Condition        Report By
 HV1509  HISTORY     - 1971     MONUMENTED       NGS
 HV1509  HISTORY     - 20041113 MARK NOT FOUND   USPSQD
 HV1509
 HV1509                          STATION DESCRIPTION
 HV1509
 HV1509'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1509'1.3 MI SW FROM LOTHIAN.
 HV1509'ABOUT 0.2 MILE SOUTHWEST ALONG STATE HIGHWAY 2 FROM THE POST
 HV1509'OFFICE AT LOTHIAN, THENCE 1.1 MILES SOUTHWEST ALONG STATE HIGHWAY
 HV1509'408, 0.35 MILE NORTHEAST OF THE JUNCTION OF STATE HIGHWAY 259
 HV1509'WHICH LEADS SOUTHWEST, AT THE JUNCTION OF A GRAVELED ROAD LEADING
 HV1509'NORTHWEST, 42 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY,
 HV1509'29 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 84 1/2 FEET
 HV1509'SOUTH-SOUTHEAST AND ACROSS THE ROAD FROM POWER POLE NUMBER 347657,
 HV1509'106.4 FEET SOUTH AND ACROSS THE ROAD FROM THE SOUTH CORNER OF A
 HV1509'1-STORY HOUSE, 1.1 FEET NORTHEAST OF A WOODEN FENCE, 1.0 FOOT
 HV1509'SOUTHEAST OF A METAL WITNESS POST, ABOUT 1 FOOT ABOVE THE
 HV1509'LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-FOOT SECTION OF
 HV1509'COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE
 HV1509'DISK IS LEVEL WITH THE SURFACE OF THE GROUND AND IS PROTECTED
 HV1509'BY A 4-INCH METAL PIPE PROJECTING 1 1/2 INCHES.
 HV1509
 HV1509                          STATION RECOVERY (2004)
 HV1509
 HV1509'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1509'LOCAL LANDOWNER DID NOT KNOW OF ANY MARK IN THE AREA
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0304 ***********************************************************************
 HV0304  DESIGNATION -  B 132
 HV0304  PID         -  HV0304
 HV0304  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0304  COUNTRY     -  US
 HV0304  USGS QUAD   -  ANNAPOLIS (2016)
 HV0304
 HV0304                         *CURRENT SURVEY CONTROL
 HV0304  ______________________________________________________________________
 HV0304* NAD 83(1986) POSITION- 38 58 58.     (N) 076 27 51.     (W)   SCALED
 HV0304* NAVD 88 ORTHO HEIGHT -     2.496 (meters)        8.19  (feet) ADJUSTED
 HV0304  ______________________________________________________________________
 HV0304  GEOID HEIGHT    -        -33.385 (meters)                     GEOID18
 HV0304  DYNAMIC HEIGHT  -          2.494 (meters)        8.18  (feet) COMP
 HV0304  MODELED GRAVITY -    980,076.6   (mgal)                       NAVD 88
 HV0304
 HV0304  VERT ORDER      -  FIRST     CLASS I
 HV0304
 HV0304.The horizontal coordinates were scaled from a map and have
 HV0304.an estimated accuracy of +/- 6 seconds.
 HV0304
 HV0304.The orthometric height was determined by differential leveling and
 HV0304.adjusted by the NATIONAL GEODETIC SURVEY
 HV0304.in June 1991.
 HV0304
 HV0304.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0304.GEOID18 height accuracy estimate available here.
 HV0304
 HV0304.Click photographs - Photos may exist for this station.
 HV0304
 HV0304.The dynamic height is computed by dividing the NAVD 88
 HV0304.geopotential number by the normal gravity value computed on the
 HV0304.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0304.degrees latitude (g = 980.6199 gals.).
 HV0304
 HV0304.The modeled gravity was interpolated from observed gravity values.
 HV0304
 HV0304;                    North         East    Units  Estimated Accuracy
 HV0304;SPC MD       -   146,230.      446,430.      MT  (+/- 180 meters Scaled)
 HV0304
 HV0304_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ731158(NAD 83)
 HV0304
 HV0304                          SUPERSEDED SURVEY CONTROL
 HV0304
 HV0304  NGVD 29 (11/26/84)    2.739  (m)            8.99   (f) ADJUSTED    1 1
 HV0304
 HV0304.Superseded values are not recommended for survey control.
 HV0304
 HV0304.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0304.See file dsdata.pdf to determine how the superseded data were derived.
 HV0304
 HV0304_MARKER: DB = BENCH MARK DISK
 HV0304_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0304_STAMPING: B 132 1971
 HV0304_MARK LOGO: CGS
 HV0304_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0304
 HV0304  HISTORY     - Date     Condition        Report By
 HV0304  HISTORY     - 1971     MONUMENTED       NGS
 HV0304  HISTORY     - 20031111 MARK NOT FOUND   URS
 HV0304
 HV0304                          STATION DESCRIPTION
 HV0304
 HV0304'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0304'AT ANNAPOLIS.
 HV0304'AT THE U.S. NAVAL STATION AT ANNAPOLIS, ABOUT 0.1 MILE SOUTHWEST
 HV0304'ALONG GILMORE ROAD FROM THE ADMINISTRATION BUILDING, THENCE
 HV0304'0.3 MILE SOUTHEAST ALONG HALLIGAN ROAD, 77.7 FEET NORTH AND
 HV0304'ACROSS A STREET FROM THE NORTH CORNER OF A BUILDING WHICH WAS
 HV0304'FORMERLY A HANGAR FOR SEAPLANES, 33.7 FEET NORTHEAST OF THE
 HV0304'NORTHEAST CURB OF THE STREET, 19.9 FEET WEST OF THE SOUTH CORNER
 HV0304'OF THE NAVY CONSTRUCTION BATTALIONS UNIT 403 HEADQUARTERS
 HV0304'BUILDING, 0.8 FOOT SOUTHWEST OF THE SOUTH CORNER OF THE BRICK
 HV0304'FOUNDATION FOR THE UNIT FLAGPOLE, ABOUT 3 INCHES BELOW THE LEVEL
 HV0304'OF THE FOUNDATION, AND ON THE TOP OF A COPPER COATED ROD WHICH IS
 HV0304'LEVEL WITH THE SURFACE OF THE GROUND AND IS PROTECTED BY A 4-INCH
 HV0304'METAL PIPE WHICH IS LEVEL WITH THE GROUND.  THE ROD WAS DRIVEN
 HV0304'TO A DEPTH OF 72 FEET.
 HV0304
 HV0304                          STATION RECOVERY (2003)
 HV0304
 HV0304'RECOVERY NOTE BY URS COMPANY 2003 (EN)
 HV0304'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0941 ***********************************************************************
 HV0941  DESIGNATION -  B 133
 HV0941  PID         -  HV0941
 HV0941  STATE/COUNTY-  MD/CALVERT
 HV0941  COUNTRY     -  US
 HV0941  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0941
 HV0941                         *CURRENT SURVEY CONTROL
 HV0941  ______________________________________________________________________
 HV0941* NAD 83(1986) POSITION- 38 34 15.     (N) 076 36 08.     (W)   SCALED
 HV0941* NAVD 88 ORTHO HEIGHT -    37.600 (meters)      123.36  (feet) ADJUSTED
 HV0941  ______________________________________________________________________
 HV0941  GEOID HEIGHT    -        -33.750 (meters)                     GEOID18
 HV0941  DYNAMIC HEIGHT  -         37.578 (meters)      123.29  (feet) COMP
 HV0941  MODELED GRAVITY -    980,034.7   (mgal)                       NAVD 88
 HV0941
 HV0941  VERT ORDER      -  FIRST     CLASS II
 HV0941
 HV0941.The horizontal coordinates were scaled from a map and have
 HV0941.an estimated accuracy of +/- 6 seconds.
 HV0941
 HV0941.The orthometric height was determined by differential leveling and
 HV0941.adjusted by the NATIONAL GEODETIC SURVEY
 HV0941.in June 1991.
 HV0941
 HV0941.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0941.GEOID18 height accuracy estimate available here.
 HV0941
 HV0941.Click photographs - Photos may exist for this station.
 HV0941
 HV0941.The dynamic height is computed by dividing the NAVD 88
 HV0941.geopotential number by the normal gravity value computed on the
 HV0941.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0941.degrees latitude (g = 980.6199 gals.).
 HV0941
 HV0941.The modeled gravity was interpolated from observed gravity values.
 HV0941
 HV0941;                    North         East    Units  Estimated Accuracy
 HV0941;SPC MD       -   100,440.      434,660.      MT  (+/- 180 meters Scaled)
 HV0941
 HV0941_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH604703(NAD 83)
 HV0941
 HV0941                          SUPERSEDED SURVEY CONTROL
 HV0941
 HV0941  NGVD 29 (11/26/84)   37.845  (m)          124.16   (f) ADJUSTED    1 2
 HV0941
 HV0941.Superseded values are not recommended for survey control.
 HV0941
 HV0941.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0941.See file dsdata.pdf to determine how the superseded data were derived.
 HV0941
 HV0941_MARKER: DB = BENCH MARK DISK
 HV0941_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0941+WITH SETTING: INTO GROUND
 HV0941_STAMPING: B 133 1971
 HV0941_MARK LOGO: CGS
 HV0941_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0941+STABILITY: SURFACE MOTION
 HV0941
 HV0941  HISTORY     - Date     Condition        Report By
 HV0941  HISTORY     - 1971     MONUMENTED       NGS
 HV0941  HISTORY     - 1972     GOOD             NGS
 HV0941
 HV0941                          STATION DESCRIPTION
 HV0941
 HV0941'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV0941'2.6 MI NW FROM PRINCE FREDERICK.
 HV0941'ABOUT 2.55 MILES NORTH ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0941'INTERSECTION OF STATE HIGHWAY 231 AT PRINCE FREDERICK, 0.95 MILE
 HV0941'SOUTH OF THE JUNCTION OF STATE HIGHWAY 263 LEADING NORTHEAST,
 HV0941'NEAR THE JUNCTION OF A BLACK TOP FARM ROAD, 127 FEET NORTH OF THE
 HV0941'CENTER LINE OF THE DRIVEWAY (FARM ROAD), 27 FEET WEST OF THE CENTER
 HV0941'LINE OF THE SOUTHBOUND LANE OF THE HIGHWAY, 8.6 FEET SOUTHWEST OF
 HV0941'THE STEEL POST AT THE SOUTH END OF A CABLE GUARD RAILING, 8 FEET
 HV0941'SOUTHEAST OF THE CENTER OF AN 18-INCH WILLOW TREE, 1 FOOT NORTH
 HV0941'OF A METAL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, AND ON THE
 HV0941'TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A
 HV0941'METAL BASE PLATE.  THE DISK IS FLUSH WITH THE GROUND AND ENCASED
 HV0941'IN A 4 INCH METAL PIPE THAT PROJECTS 2 INCHES ABOVE THE LEVEL
 HV0941'OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0348 ***********************************************************************
 HV0348  DESIGNATION -  B 134
 HV0348  PID         -  HV0348
 HV0348  STATE/COUNTY-  MD/CALVERT
 HV0348  COUNTRY     -  US
 HV0348  USGS QUAD   -  COVE POINT (2016)
 HV0348
 HV0348                         *CURRENT SURVEY CONTROL
 HV0348  ______________________________________________________________________
 HV0348* NAD 83(1986) POSITION- 38 24 15.7    (N) 076 26 31.1    (W)   HD_HELD2
 HV0348* NAVD 88 ORTHO HEIGHT -    25.461 (meters)       83.53  (feet) ADJUSTED
 HV0348  ______________________________________________________________________
 HV0348  GEOID HEIGHT    -        -34.335 (meters)                     GEOID18
 HV0348  DYNAMIC HEIGHT  -         25.445 (meters)       83.48  (feet) COMP
 HV0348  MODELED GRAVITY -    980,023.8   (mgal)                       NAVD 88
 HV0348
 HV0348  VERT ORDER      -  FIRST     CLASS II
 HV0348
 HV0348.The horizontal coordinates were established by autonomous hand held GPS
 HV0348.observations and have an estimated accuracy of +/- 10 meters.
 HV0348
 HV0348.The orthometric height was determined by differential leveling and
 HV0348.adjusted by the NATIONAL GEODETIC SURVEY
 HV0348.in June 1991.
 HV0348
 HV0348.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0348.GEOID18 height accuracy estimate available here.
 HV0348
 HV0348.Click photographs - Photos may exist for this station.
 HV0348
 HV0348.The dynamic height is computed by dividing the NAVD 88
 HV0348.geopotential number by the normal gravity value computed on the
 HV0348.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0348.degrees latitude (g = 980.6199 gals.).
 HV0348
 HV0348.The modeled gravity was interpolated from observed gravity values.
 HV0348
 HV0348;                    North         East    Units  Estimated Accuracy
 HV0348;SPC MD       -    82,036.      448,741.      MT  (+/- 10 meters HH2 GPS)
 HV0348
 HV0348_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7409351665(NAD 83)
 HV0348
 HV0348                          SUPERSEDED SURVEY CONTROL
 HV0348
 HV0348  NGVD 29 (11/26/84)   25.705  (m)           84.33   (f) ADJUSTED    1 2
 HV0348
 HV0348.Superseded values are not recommended for survey control.
 HV0348
 HV0348.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0348.See file dsdata.pdf to determine how the superseded data were derived.
 HV0348
 HV0348_MARKER: DB = BENCH MARK DISK
 HV0348_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0348_SP_SET: BOX CULVERT HEADWALL
 HV0348_STAMPING: B 134 1971
 HV0348_MARK LOGO: CGS
 HV0348_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0348+STABILITY: SURFACE MOTION
 HV0348_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0348+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2022
 HV0348
 HV0348  HISTORY     - Date     Condition        Report By
 HV0348  HISTORY     - 1971     MONUMENTED       NGS
 HV0348  HISTORY     - 1985     GOOD             NGS
 HV0348  HISTORY     - 20060329 GOOD             GPSSS
 HV0348  HISTORY     - 20220731 GOOD             WTBALL
 HV0348
 HV0348                          STATION DESCRIPTION
 HV0348
 HV0348'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0348'1 MI SE FROM LUSBY.
 HV0348'ABOUT 0.95 MILE SOUTHEAST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0348'POST OFFICE AT LUSBY, ABOUT 0.45 MILE NORTHWEST OF THE MIDDLEHAM
 HV0348'CHAPEL AND CEMETERY, SET IN THE TOP OF THE NORTHWEST END OF THE
 HV0348'NORTHEAST CONCRETE HEADWALL FOR A BOX CULVERT WITH WING WALL
 HV0348'UNDER THE HIGHWAY FOR HELLEN CREEK, 23 FEET NORTHEAST OF THE
 HV0348'CENTER LINE OF THE HIGHWAY AND ABOUT LEVEL WITH THE HIGHWAY.
 HV0348
 HV0348                          STATION RECOVERY (1985)
 HV0348
 HV0348'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985
 HV0348'RECOVERED IN GOOD CONDITION.
 HV0348
 HV0348                          STATION RECOVERY (2006)
 HV0348
 HV0348'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (BD)
 HV0348'RECOVERED BY HAL OF C.O.A.
 HV0348
 HV0348                          STATION RECOVERY (2022)
 HV0348
 HV0348'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2022 (JMB)
 HV0348'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0313 ***********************************************************************
 HV0313  DESIGNATION -  B 135
 HV0313  PID         -  HV0313
 HV0313  STATE/COUNTY-  MD/ST MARYS
 HV0313  COUNTRY     -  US
 HV0313  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV0313
 HV0313                         *CURRENT SURVEY CONTROL
 HV0313  ______________________________________________________________________
 HV0313* NAD 83(1986) POSITION- 38 14 13.1    (N) 076 29 51.5    (W)   HD_HELD2
 HV0313* NAVD 88 ORTHO HEIGHT -     4.435 (meters)       14.55  (feet) ADJUSTED
 HV0313  ______________________________________________________________________
 HV0313  GEOID HEIGHT    -        -34.435 (meters)                     GEOID18
 HV0313  DYNAMIC HEIGHT  -          4.432 (meters)       14.54  (feet) COMP
 HV0313  MODELED GRAVITY -    980,004.9   (mgal)                       NAVD 88
 HV0313
 HV0313  VERT ORDER      -  FIRST     CLASS II
 HV0313
 HV0313.The horizontal coordinates were established by autonomous hand held GPS
 HV0313.observations and have an estimated accuracy of +/- 10 meters.
 HV0313
 HV0313.The orthometric height was determined by differential leveling and
 HV0313.adjusted by the NATIONAL GEODETIC SURVEY
 HV0313.in June 1991.
 HV0313
 HV0313.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0313.GEOID18 height accuracy estimate available here.
 HV0313
 HV0313.Click photographs - Photos may exist for this station.
 HV0313
 HV0313.The dynamic height is computed by dividing the NAVD 88
 HV0313.geopotential number by the normal gravity value computed on the
 HV0313.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0313.degrees latitude (g = 980.6199 gals.).
 HV0313
 HV0313.The modeled gravity was interpolated from observed gravity values.
 HV0313
 HV0313;                    North         East    Units  Estimated Accuracy
 HV0313;SPC MD       -    63,428.      443,982.      MT  (+/- 10 meters HH2 GPS)
 HV0313
 HV0313_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6893233168(NAD 83)
 HV0313
 HV0313                          SUPERSEDED SURVEY CONTROL
 HV0313
 HV0313  NGVD 29 (11/26/84)    4.692  (m)           15.39   (f) ADJUSTED    1 2
 HV0313
 HV0313.Superseded values are not recommended for survey control.
 HV0313
 HV0313.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0313.See file dsdata.pdf to determine how the superseded data were derived.
 HV0313
 HV0313_MARKER: DB = BENCH MARK DISK
 HV0313_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV0313_SP_SET: ABUTMENT
 HV0313_STAMPING: B 135 1971
 HV0313_MARK LOGO: CGS
 HV0313_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0313_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0313+SATELLITE: SATELLITE OBSERVATIONS - May 27, 2023
 HV0313
 HV0313  HISTORY     - Date     Condition        Report By
 HV0313  HISTORY     - 1971     MONUMENTED       NGS
 HV0313  HISTORY     - 19910103 GOOD             NGS
 HV0313  HISTORY     - 19990214 GOOD             USPSQD
 HV0313  HISTORY     - 20050416 GOOD             USPSQD
 HV0313  HISTORY     - 20140205 GOOD             MDSHA
 HV0313  HISTORY     - 20230527 GOOD             NGS
 HV0313
 HV0313                          STATION DESCRIPTION
 HV0313
 HV0313'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0313'AT GREAT MILLS.
 HV0313'AT GREAT MILLS, ALONG STATE HIGHWAY 5, 140 FEET WEST OF THE WEST
 HV0313'JUNCTION OF STATE HIGHWAY 5 AND STATE HIGHWAY 246, SET ON THE
 HV0313'TOP OF THE SOUTH END OF THE EAST CONCRETE ABUTMENT FOR A 73-FOOT
 HV0313'LONG CONCRETE BRIDGE OVER WESTERN BRANCH OF ST MARYS RIVER, 28.5
 HV0313'FEET SOUTH OF THE CENTER LINE OF STATE HIGHWAY 5, 0.2 FOOT EAST OF
 HV0313'THE EAST END OF THE CONCRETE PART OF THE SOUTH GUARD RAILING OF
 HV0313'THE BRIDGE, ABOUT 8 INCHES ABOVE THE BRIDGE FLOOR.
 HV0313
 HV0313                          STATION RECOVERY (1991)
 HV0313
 HV0313'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV0313'IN GREAT MILLS, AT THE JUNCTION OF STATE HIGHWAY 5 AND THE ST. MARYS
 HV0313'RIVER, IN TOP OF AND 0.1 M (0.3 FT) WEST OF THE EAST END OF THE SOUTH
 HV0313'CONCRETE ABUTMENT OF THE HIGHWAY BRIDGE SPANNING THE RIVER, 0.2 KM
 HV0313'(0.1 MI) WEST OF THE INTERSECTION OF STATE HIGHWAY 246, AND 8.7 M
 HV0313'(28.5 FT) SOUTH OF AND LEVEL WITH THE CENTERLINE OF THE HIGHWAY, AND
 HV0313'0.1 M (0.3 FT) EAST OF THE EAST END OF THE BRIDGE RAIL.
 HV0313
 HV0313                          STATION RECOVERY (1999)
 HV0313
 HV0313'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV0313'RECOVERED IN GOOD CONDITION.
 HV0313
 HV0313                          STATION RECOVERY (2005)
 HV0313
 HV0313'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPF)
 HV0313'RECOVERED IN GOOD CONDITION.
 HV0313
 HV0313                          STATION RECOVERY (2014)
 HV0313
 HV0313'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2014 (DLW)
 HV0313'RECOVERED IN GOOD CONDITION.
 HV0313
 HV0313                          STATION RECOVERY (2023)
 HV0313
 HV0313'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2023 (JE)
 HV0313'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7806 ***********************************************************************
 HV7806  DESIGNATION -  B 136
 HV7806  PID         -  HV7806
 HV7806  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7806  COUNTRY     -  US
 HV7806  USGS QUAD   -  BRANDYWINE (2016)
 HV7806
 HV7806                         *CURRENT SURVEY CONTROL
 HV7806  ______________________________________________________________________
 HV7806* NAD 83(1986) POSITION- 38 44 32.     (N) 076 49 08.     (W)   SCALED
 HV7806* NAVD 88 ORTHO HEIGHT -    70.905 (meters)      232.63  (feet) ADJUSTED
 HV7806  ______________________________________________________________________
 HV7806  GEOID HEIGHT    -        -32.870 (meters)                     GEOID18
 HV7806  DYNAMIC HEIGHT  -         70.864 (meters)      232.49  (feet) COMP
 HV7806  MODELED GRAVITY -    980,055.2   (mgal)                       NAVD 88
 HV7806
 HV7806  VERT ORDER      -  FIRST     CLASS II
 HV7806
 HV7806.The horizontal coordinates were scaled from a map and have
 HV7806.an estimated accuracy of +/- 6 seconds.
 HV7806
 HV7806.The orthometric height was determined by differential leveling and
 HV7806.adjusted by the NATIONAL GEODETIC SURVEY
 HV7806.in June 1991.
 HV7806
 HV7806.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7806.GEOID18 height accuracy estimate available here.
 HV7806
 HV7806.Click photographs - Photos may exist for this station.
 HV7806
 HV7806.The dynamic height is computed by dividing the NAVD 88
 HV7806.geopotential number by the normal gravity value computed on the
 HV7806.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7806.degrees latitude (g = 980.6199 gals.).
 HV7806
 HV7806.The modeled gravity was interpolated from observed gravity values.
 HV7806
 HV7806;                    North         East    Units  Estimated Accuracy
 HV7806;SPC MD       -   119,410.      415,750.      MT  (+/- 180 meters Scaled)
 HV7806
 HV7806_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH419897(NAD 83)
 HV7806
 HV7806                          SUPERSEDED SURVEY CONTROL
 HV7806
 HV7806  NGVD 29 (11/26/84)   71.137  (m)          233.39   (f) ADJUSTED    1 2
 HV7806
 HV7806.Superseded values are not recommended for survey control.
 HV7806
 HV7806.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7806.See file dsdata.pdf to determine how the superseded data were derived.
 HV7806
 HV7806_MARKER: DV = VERTICAL CONTROL DISK
 HV7806_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV7806_STAMPING: B 136 1975
 HV7806_MARK LOGO: NGS
 HV7806_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7806
 HV7806  HISTORY     - Date     Condition        Report By
 HV7806  HISTORY     - 1975     MONUMENTED       NGS
 HV7806
 HV7806                          STATION DESCRIPTION
 HV7806
 HV7806'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7806'0.9 MI SW FROM ROSARYVILLE.
 HV7806'0.9 MILE SOUTHWEST ALONG U.S. HIGHWAY 301 FROM THE INTERSECTION OF
 HV7806'OF ROSARYVILLE ROAD AND OLD INDIANHEAD ROAD AT ROSARYVILLE 71 FEET
 HV7806'NORTHWEST OF THE CENTERLINE OF THE SOUTHBOUND LANE OF U.S. HIGHWAY
 HV7806'301. 179.7 FEET EAST OF A STEEL GATE. 26.5 FEET SOUTHWEST OF A GRAVEL
 HV7806'LANE LEADING TO R.C. MCALLISTER RESIDENCE. 5.4 FEET SOUTH OF A FENCE
 HV7806'CORNER POST. 4.8 FEET SOUTHEAST OF A WOOD FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6539 ***********************************************************************
 JV6539  DESIGNATION -  B 137 RESET
 JV6539  PID         -  JV6539
 JV6539  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6539  COUNTRY     -  US
 JV6539  USGS QUAD   -  ODENTON (2016)
 JV6539
 JV6539                         *CURRENT SURVEY CONTROL
 JV6539  ______________________________________________________________________
 JV6539* NAD 83(1986) POSITION- 39 03 39.5    (N) 076 39 00.9    (W)   HD_HELD2
 JV6539* NAVD 88 ORTHO HEIGHT -    49.67  (meters)      163.0   (feet) RESET
 JV6539  ______________________________________________________________________
 JV6539  GEOID HEIGHT    -        -32.832 (meters)                     GEOID18
 JV6539  VERT ORDER      -  THIRD
 JV6539
 JV6539.The horizontal coordinates were established by autonomous hand held GPS
 JV6539.observations and have an estimated accuracy of +/- 10 meters.
 JV6539
 JV6539.The orthometric height was computed from unverified reset data.
 JV6539
 JV6539.No vertical observational check was made to the station.
 JV6539
 JV6539.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6539.GEOID18 height accuracy estimate available here.
 JV6539
 JV6539.Click photographs - Photos may exist for this station.
 JV6539
 JV6539;                    North         East    Units  Estimated Accuracy
 JV6539;SPC MD       -   154,833.      430,270.      MT  (+/- 10 meters HH2 GPS)
 JV6539
 JV6539_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5722024838(NAD 83)
 JV6539
 JV6539                          SUPERSEDED SURVEY CONTROL
 JV6539
 JV6539  NGVD 29 (11/18/05)   49.90   (m)          163.7    (f) RESET       3  
 JV6539
 JV6539.Superseded values are not recommended for survey control.
 JV6539
 JV6539.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6539.See file dsdata.pdf to determine how the superseded data were derived.
 JV6539
 JV6539_MARKER: DV = VERTICAL CONTROL DISK
 JV6539_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6539_STAMPING: B 137 RESET 1986
 JV6539_MARK LOGO: NGS
 JV6539_PROJECTION: PROJECTING 5 CENTIMETERS
 JV6539_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6539+STABILITY: SURFACE MOTION
 JV6539
 JV6539  HISTORY     - Date     Condition        Report By
 JV6539  HISTORY     - 1986     MONUMENTED       NGS
 JV6539
 JV6539                          STATION DESCRIPTION
 JV6539
 JV6539'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 JV6539'0.5 KM (0.30 MI) NW FROM MILLERSVILLE.
 JV6539'0.5 KM (0.30 MI) NORTHEAST ALONG STATE HIGHWAY 3 FROM ITS JUNCTION
 JV6539'WITH STATE HIGHWAY 175 AT MILLERSVILLE, JUST OPPOSITE A EXIT RAMP FOR
 JV6539'ENTERING INTERSTATE HIGHWAY 97 (NOW UNDER CONSTRUCTION), 9.9 M
 JV6539'(32.5 FT) NORTHWEST FROM THE CENTER OF THE NORTH BOUND LANE OF
 JV6539'PRESENTLY STATE HIGHWAY 3, 28.1 M (92.2 FT) NORTHEAST FROM A
 JV6539'POWERLINE POLE NUMBERED 295557 AND 0.5 M (1.6 FT) SOUTHEAST FROM A
 JV6539'CARSONITE WITNESS POST.
 JV6539'THE MARK IS 27.9 METERS  W FROM  A WITNESS POST
 JV6539'THE MARK IS ABOVE LEVEL WITH HWY 3.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1023 ***********************************************************************
 HU1023  DESIGNATION -  B 141
 HU1023  PID         -  HU1023
 HU1023  STATE/COUNTY-  MD/WORCESTER
 HU1023  COUNTRY     -  US
 HU1023  USGS QUAD   -  WHITTINGTON POINT (2016)
 HU1023
 HU1023                         *CURRENT SURVEY CONTROL
 HU1023  ______________________________________________________________________
 HU1023* NAD 83(2011) POSITION- 38 02 55.48628(N) 075 13 45.94351(W)   ADJUSTED
 HU1023* NAD 83(2011) ELLIP HT-   -34.850 (meters)        (06/05/19)   ADJUSTED
 HU1023* NAD 83(2011) EPOCH   -  2010.00
 HU1023* NAVD 88 ORTHO HEIGHT -     1.605 (meters)        5.27  (feet) ADJUSTED
 HU1023  ______________________________________________________________________
 HU1023  GEOID HEIGHT    -        -36.402 (meters)                     GEOID18
 HU1023  NAD 83(2011) X  -  1,282,156.776 (meters)                     COMP
 HU1023  NAD 83(2011) Y  - -4,862,880.647 (meters)                     COMP
 HU1023  NAD 83(2011) Z  -  3,909,684.744 (meters)                     COMP
 HU1023  LAPLACE CORR    -          0.70  (seconds)                    DEFLEC18
 HU1023  DYNAMIC HEIGHT  -          1.604 (meters)        5.26  (feet) COMP
 HU1023  MODELED GRAVITY -    979,976.7   (mgal)                       NAVD 88
 HU1023
 HU1023  VERT ORDER      -  SECOND    CLASS I
 HU1023
 HU1023  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1023  Standards:
 HU1023         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1023            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1023  -------------------------------------------------------------------
 HU1023  NETWORK    0.96   0.80           0.47   0.25   0.41     -0.00115473
 HU1023  -------------------------------------------------------------------
 HU1023  Click here for local accuracies and other accuracy information.
 HU1023
 HU1023.The horizontal coordinates were established by GPS observations
 HU1023.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 HU1023
 HU1023.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1023.been affixed to the stable North American tectonic plate. See 
 HU1023.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1023
 HU1023.The horizontal coordinates are valid at the epoch date displayed above
 HU1023.which is a decimal equivalence of Year/Month/Day.
 HU1023
 HU1023.The orthometric height was determined by differential leveling and
 HU1023.adjusted by the NATIONAL GEODETIC SURVEY
 HU1023.in June 1991.
 HU1023
 HU1023.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1023.GEOID18 height accuracy estimate available here.
 HU1023
 HU1023.Click photographs - Photos may exist for this station.
 HU1023
 HU1023.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1023
 HU1023.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1023
 HU1023.The ellipsoidal height was determined by GPS observations
 HU1023.and is referenced to NAD 83.
 HU1023
 HU1023.The dynamic height is computed by dividing the NAVD 88
 HU1023.geopotential number by the normal gravity value computed on the
 HU1023.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1023.degrees latitude (g = 980.6199 gals.).
 HU1023
 HU1023.The modeled gravity was interpolated from observed gravity values.
 HU1023
 HU1023. The following values were computed from the NAD 83(2011) position.
 HU1023
 HU1023;                    North         East     Units Scale Factor Converg.
 HU1023;SPC MD       -    43,920.193   555,409.158   MT  1.00005320   +1 06 40.6
 HU1023;SPC MD       -   144,094.83  1,822,204.88   sFT  1.00005320   +1 06 40.6
 HU1023;UTM  18      - 4,211,248.373   479,870.096   MT  0.99960499   -0 08 29.1
 HU1023
 HU1023!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1023!SPC MD       -   1.00000547  x   1.00005320  =   1.00005867
 HU1023!UTM  18      -   1.00000547  x   0.99960499  =   0.99961046
 HU1023
 HU1023_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7987011248(NAD 83)
 HU1023
 HU1023                          SUPERSEDED SURVEY CONTROL
 HU1023
 HU1023  NGVD 29 (11/26/84)    1.847  (m)            6.06   (f) ADJUSTED    2 1
 HU1023
 HU1023.Superseded values are not recommended for survey control.
 HU1023
 HU1023.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1023.See file dsdata.pdf to determine how the superseded data were derived.
 HU1023
 HU1023_MARKER: DV = VERTICAL CONTROL DISK
 HU1023_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1023+WITH SETTING: INTO GROUND
 HU1023_STAMPING: B 141 1977
 HU1023_MARK LOGO: NGS
 HU1023_PROJECTION: PROJECTING 15 CENTIMETERS
 HU1023_MAGNETIC: I = MARKER IS A STEEL ROD
 HU1023_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1023+STABILITY: SURFACE MOTION
 HU1023_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1023+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 HU1023
 HU1023  HISTORY     - Date     Condition        Report By
 HU1023  HISTORY     - 1977     MONUMENTED       NGS
 HU1023  HISTORY     - 1989     GOOD             USPSQD
 HU1023  HISTORY     - 20040404 POOR             GEOCAC
 HU1023  HISTORY     - 20130305 GOOD             ARCSHE
 HU1023  HISTORY     - 20150316 GOOD             NPS
 HU1023
 HU1023                          STATION DESCRIPTION
 HU1023
 HU1023'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1023'IN ASSATEAGUE ISLAND.
 HU1023'1.6 MILES NORTHEAST ALONG THE SERVICE ROAD FROM THE STATE LINE ON
 HU1023'ASSATEAGUE ISLAND, 51 FEET EAST OF POWERLINE POLE 425, 49 FEET
 HU1023'SOUTHEAST OF THE CENTERLINE OF THE ROAD.
 HU1023
 HU1023                          STATION RECOVERY (1989)
 HU1023
 HU1023'RECOVERY NOTE BY US POWER SQUADRON 1989 (RBD)
 HU1023'RECOVERED IN GOOD CONDITION.
 HU1023
 HU1023                          STATION RECOVERY (2004)
 HU1023
 HU1023'RECOVERY NOTE BY GEOCACHING 2004 (JGE)
 HU1023'MARK FOUND IN FAIR CONDITION, NOW PROJECTS 6 INCHES ABOVE LOOSE SAND,
 HU1023'BUT MONUMENT IS STILL SOLID. WITNESS POST IS BROKEN.
 HU1023
 HU1023                          STATION RECOVERY (2013)
 HU1023
 HU1023'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU1023'THE MARK IS LOCATED ABOUT 9.8 MI (15.8 KM) EAST OF STOCKTON, 9.7 MI
 HU1023'(15.6 KM) EAST-SOUTHEAST OF GIRDLETREE AND 8.0 MI (12.9 KM) SOUTHEAST
 HU1023'OF BOXIRON ON ASSATEAGUE ISLAND.  OWNERSHIP--U.S. GOVERNMENT.
 HU1023'
 HU1023'TO REACH FROM THE SOUTHEAST END OF THE VERRAZANO BRIDGE OVER
 HU1023'SINEPUXENT BAY, GO SOUTHEAST ON MD 611 FOR 0.62 MI (1.0 KM) TO A SIDE
 HU1023'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ON STEPHEN DECATUR
 HU1023'MEMORIAL ROAD FOR 2.27 MI (3.7 KM) TO A PARK RANGER BOOTH.  CONTINUE
 HU1023'SOUTHWEST ON STEPHEN DECATUR MEMORIAL ROAD FOR 1.22 MI (2.0 KM) TO A
 HU1023'TRAFFIC CIRCLE.  TAKE THE SECOND EXIT AND CONTINUE SOUTHWEST ON
 HU1023'BAYBERRY DRIVE FOR 0.19 MI (0.3 KM) TO THE END OF THE PAVEMENT.
 HU1023'ACTIVATE FOUR WHEEL DRIVE AND CONTINUE SOUTHWEST ON A SAND ROAD AND
 HU1023'ALONG THE BEACH FOR 10.49 MI (16.9 KM) AND PARK VEHICLE.  WALK
 HU1023'NORTHWEST FOR 700 FT (213.4 M) TO THE MARK.
 HU1023'
 HU1023'IT IS 50 FT (15.2 M) EAST-SOUTHEAST OF THE CENTERLINE OF AN OLD TRACK
 HU1023'ROAD, 47.3 FT (14.4 M) NORTHWEST OF A 1-IN (3 CM) IRON PIPE 'GPS 17'
 HU1023'PROJECTING 1.5 FT (0.5 M) AND 2.0 FT (0.6 M) EAST OF A FIBERGLASS
 HU1023'WITNESS POST.
 HU1023
 HU1023                          STATION RECOVERY (2015)
 HU1023
 HU1023'RECOVERY NOTE BY NATIONAL PARK SERVICE 2015 (NTW)
 HU1023'THE STATION IS LOCATED AT KM 32.9 IN THE OSV ZONE. FROM BAYBERRY
 HU1023'DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE
 HU1023'REQUIRED). DRIVE SOUTH ON THE BEACH 16.9 KM (10.5 MI), PARK VEHICLE,
 HU1023'AND WALK NORTHWEST FOR 213.4 M (700 FT). THE STATION IS 19.7 M (64.6
 HU1023'FT) EAST OF THE CENTER-LINE OF AN OLD ROADBED, 57 CM (22.4 IN) EAST OF
 HU1023'AN ORANGE CARSONITE WITNESS POST, AND PROJECTS 13 CM (5.1 IN) FROM THE
 HU1023'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3869 ***********************************************************************
 JV3869  DESIGNATION -  B 143
 JV3869  PID         -  JV3869
 JV3869  STATE/COUNTY-  MD/FREDERICK
 JV3869  COUNTRY     -  US
 JV3869  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV3869
 JV3869                         *CURRENT SURVEY CONTROL
 JV3869  ______________________________________________________________________
 JV3869* NAD 83(1986) POSITION- 39 16 23.     (N) 077 29 55.     (W)   SCALED
 JV3869* NAVD 88 ORTHO HEIGHT -   100.295 (meters)      329.05  (feet) ADJUSTED
 JV3869  ______________________________________________________________________
 JV3869  GEOID HEIGHT    -        -32.633 (meters)                     GEOID18
 JV3869  DYNAMIC HEIGHT  -        100.241 (meters)      328.87  (feet) COMP
 JV3869  MODELED GRAVITY -    980,083.4   (mgal)                       NAVD 88
 JV3869
 JV3869  VERT ORDER      -  FIRST     CLASS II
 JV3869
 JV3869.The horizontal coordinates were scaled from a map and have
 JV3869.an estimated accuracy of +/- 6 seconds.
 JV3869
 JV3869.The orthometric height was determined by differential leveling and
 JV3869.adjusted by the NATIONAL GEODETIC SURVEY
 JV3869.in June 1991.
 JV3869
 JV3869.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3869.GEOID18 height accuracy estimate available here.
 JV3869
 JV3869.Click photographs - Photos may exist for this station.
 JV3869
 JV3869.The dynamic height is computed by dividing the NAVD 88
 JV3869.geopotential number by the normal gravity value computed on the
 JV3869.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3869.degrees latitude (g = 980.6199 gals.).
 JV3869
 JV3869.The modeled gravity was interpolated from observed gravity values.
 JV3869
 JV3869;                    North         East    Units  Estimated Accuracy
 JV3869;SPC MD       -   178,440.      356,980.      MT  (+/- 180 meters Scaled)
 JV3869
 JV3869_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ844500(NAD 83)
 JV3869
 JV3869                          SUPERSEDED SURVEY CONTROL
 JV3869
 JV3869.No superseded survey control is available for this station.
 JV3869
 JV3869_MARKER: DV = VERTICAL CONTROL DISK
 JV3869_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3869_STAMPING: B 143 1979
 JV3869_MARK LOGO: NGS
 JV3869_PROJECTION: RECESSED 10 CENTIMETERS
 JV3869_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3869_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3869_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3869+SATELLITE: SATELLITE OBSERVATIONS - February 11, 2003
 JV3869_ROD/PIPE-DEPTH: 4.57 meters
 JV3869
 JV3869  HISTORY     - Date     Condition        Report By
 JV3869  HISTORY     - 1979     MONUMENTED       NGS
 JV3869  HISTORY     - 20011206 GOOD             MDSHA
 JV3869  HISTORY     - 20030211 GOOD             MDSHA
 JV3869
 JV3869                          STATION DESCRIPTION
 JV3869
 JV3869'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3869'2205 MI NW FROM TUSCARORA.
 JV3869'2.05 MILES NORTHWEST ALONG STATE ROUTE 28 FROM THE POST OFFICE IN
 JV3869'TUSCARORA TO THE MARK ON THE RIGHT, SET AT THE SOUTHWEST CORNER
 JV3869'OF WOODFIED INC. BUILDING, 2.35 MILES EAST OF THE JUNCTION OF STATE
 JV3869'ROUTE 15 IN POINT OF ROCKS, 33 FEET NORTHEAST OF THE CENTERLINE OF
 JV3869'ROUTE 28, 11.5 FEET SOUTHWEST OF THE BOTTOM CONCRETE STEP AT THE REAR
 JV3869'ENTRANCE TO THE BUILDING, 3.5 FEET NORTHEAST OF THE SOUTHHEST
 JV3869'CORNER, 2.8 FEET NORTHEAST OF A TELEPHONE POLE WITH LINES LEADING
 JV3869'INTO THE BUILDING.
 JV3869'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JV3869
 JV3869                          STATION RECOVERY (2001)
 JV3869
 JV3869'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3869'RECOVERED AS DESCRIBED.
 JV3869
 JV3869                          STATION RECOVERY (2003)
 JV3869
 JV3869'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 JV3869'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3884 ***********************************************************************
 JV3884  DESIGNATION -  B 146
 JV3884  PID         -  JV3884
 JV3884  STATE/COUNTY-  MD/WASHINGTON
 JV3884  COUNTRY     -  US
 JV3884  USGS QUAD   -  HARPERS FERRY (2016)
 JV3884
 JV3884                         *CURRENT SURVEY CONTROL
 JV3884  ______________________________________________________________________
 JV3884* NAD 83(1986) POSITION- 39 19 58.     (N) 077 41 20.     (W)   SCALED
 JV3884* NAVD 88 ORTHO HEIGHT -   125.038 (meters)      410.23  (feet) ADJUSTED
 JV3884  ______________________________________________________________________
 JV3884  GEOID HEIGHT    -        -33.306 (meters)                     GEOID18
 JV3884  DYNAMIC HEIGHT  -        124.967 (meters)      410.00  (feet) COMP
 JV3884  MODELED GRAVITY -    980,058.3   (mgal)                       NAVD 88
 JV3884
 JV3884  VERT ORDER      -  FIRST     CLASS II
 JV3884
 JV3884.The horizontal coordinates were scaled from a map and have
 JV3884.an estimated accuracy of +/- 6 seconds.
 JV3884
 JV3884.The orthometric height was determined by differential leveling and
 JV3884.adjusted by the NATIONAL GEODETIC SURVEY
 JV3884.in June 1991.
 JV3884
 JV3884.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3884.GEOID18 height accuracy estimate available here.
 JV3884
 JV3884.Click photographs - Photos may exist for this station.
 JV3884
 JV3884.The dynamic height is computed by dividing the NAVD 88
 JV3884.geopotential number by the normal gravity value computed on the
 JV3884.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3884.degrees latitude (g = 980.6199 gals.).
 JV3884
 JV3884.The modeled gravity was interpolated from observed gravity values.
 JV3884
 JV3884;                    North         East    Units  Estimated Accuracy
 JV3884;SPC MD       -   185,170.      340,610.      MT  (+/- 180 meters Scaled)
 JV3884
 JV3884_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ682571(NAD 83)
 JV3884
 JV3884                          SUPERSEDED SURVEY CONTROL
 JV3884
 JV3884.No superseded survey control is available for this station.
 JV3884
 JV3884_MARKER: DV = VERTICAL CONTROL DISK
 JV3884_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3884_SP_SET: BRIDGE
 JV3884_STAMPING: B 146 1979
 JV3884_MARK LOGO: NGS
 JV3884_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3884
 JV3884  HISTORY     - Date     Condition        Report By
 JV3884  HISTORY     - 1979     MONUMENTED       NGS
 JV3884  HISTORY     - 1979     GOOD             NGS
 JV3884  HISTORY     - 20040730 MARK NOT FOUND   NAGEL
 JV3884  HISTORY     - 20081107 MARK NOT FOUND   MDSHA
 JV3884
 JV3884                          STATION DESCRIPTION
 JV3884
 JV3884'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3884'IN WEVERTON.
 JV3884'SET IN TOP OF THE NORTHWEST CORNER OF THE STATE ROUTE 67 OVERPASS
 JV3884'BRIDGE OVER U.S. HIGHWAY 340, 23 FEET WEST OF THE CENTER LINE OF THE
 JV3884'BRIDGE, 1.5 FEET NORTH OF A CORNER POST OF A CHAIN LINK FENCE.
 JV3884'THE MARK IS 3 FT ABOVE HIGHWAY.
 JV3884
 JV3884                          STATION RECOVERY (1979)
 JV3884
 JV3884'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3884'SET IN TOP OF THE NORTHWEST CORNER OF THE STATE ROUTE 67 OVERPASS
 JV3884'BRIDGE OVER U.S. HIGHWAY 340, 23 FEET WEST OF THE CENTER LINE OF THE
 JV3884'BRIDGE, 1.5 FEET NORTH OF A CORNER POST OF A CHAIN LINK FENCE.
 JV3884'THE MARK IS 3 FT ABOVE HIGHWAY.
 JV3884
 JV3884                          STATION RECOVERY (2004)
 JV3884
 JV3884'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2004 (GEN)
 JV3884'MARK NOT FOUND.
 JV3884
 JV3884                          STATION RECOVERY (2008)
 JV3884
 JV3884'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DLP)
 JV3884'MARK NOT FOUND. BRIDGE HAS BEEN REPLACED AND MARK MUST HAVE BEEN
 JV3884'DESTROYED DURING CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7850 ***********************************************************************
 HV7850  DESIGNATION -  B 147
 HV7850  PID         -  HV7850
 HV7850  STATE/COUNTY-  MD/MONTGOMERY
 HV7850  COUNTRY     -  US
 HV7850  USGS QUAD   -  WASHINGTON WEST (2016)
 HV7850
 HV7850                         *CURRENT SURVEY CONTROL
 HV7850  ______________________________________________________________________
 HV7850* NAD 83(1986) POSITION- 38 59 01.4    (N) 077 05 38.6    (W)   HD_HELD2
 HV7850* NAVD 88 ORTHO HEIGHT -   105.570 (meters)      346.36  (feet) ADJUSTED
 HV7850  ______________________________________________________________________
 HV7850  GEOID HEIGHT    -        -31.880 (meters)                     GEOID18
 HV7850  DYNAMIC HEIGHT  -        105.514 (meters)      346.17  (feet) COMP
 HV7850  MODELED GRAVITY -    980,088.0   (mgal)                       NAVD 88
 HV7850
 HV7850  VERT ORDER      -  FIRST     CLASS II
 HV7850
 HV7850.The horizontal coordinates were established by autonomous hand held GPS
 HV7850.observations and have an estimated accuracy of +/- 10 meters.
 HV7850
 HV7850.The orthometric height was determined by differential leveling and
 HV7850.adjusted by the NATIONAL GEODETIC SURVEY
 HV7850.in June 1991.
 HV7850
 HV7850.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7850.GEOID18 height accuracy estimate available here.
 HV7850
 HV7850.Click photographs - Photos may exist for this station.
 HV7850
 HV7850.The dynamic height is computed by dividing the NAVD 88
 HV7850.geopotential number by the normal gravity value computed on the
 HV7850.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7850.degrees latitude (g = 980.6199 gals.).
 HV7850
 HV7850.The modeled gravity was interpolated from observed gravity values.
 HV7850
 HV7850;                    North         East    Units  Estimated Accuracy
 HV7850;SPC MD       -   146,203.      391,851.      MT  (+/- 10 meters HH2 GPS)
 HV7850
 HV7850_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1862217055(NAD 83)
 HV7850
 HV7850                          SUPERSEDED SURVEY CONTROL
 HV7850
 HV7850.No superseded survey control is available for this station.
 HV7850
 HV7850_MARKER: DV = VERTICAL CONTROL DISK
 HV7850_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV7850_SP_SET: FOUNDATION
 HV7850_STAMPING: B 147 1979
 HV7850_MARK LOGO: NGS
 HV7850_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7850_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7850+SATELLITE: SATELLITE OBSERVATIONS - July 14, 2024
 HV7850
 HV7850  HISTORY     - Date     Condition        Report By
 HV7850  HISTORY     - 1979     MONUMENTED       NGS
 HV7850  HISTORY     - 19950428 GOOD             USPSQD
 HV7850  HISTORY     - 20000617 GOOD             USPSQD
 HV7850  HISTORY     - 20061125 GOOD             NGS
 HV7850  HISTORY     - 20090501 GOOD             GEOCAC
 HV7850  HISTORY     - 20221025 GOOD             3001
 HV7850  HISTORY     - 20230519 GOOD             3001
 HV7850  HISTORY     - 20240714 GOOD             INDIV
 HV7850  HISTORY     - 20240714 GOOD             INDIV
 HV7850
 HV7850                          STATION DESCRIPTION
 HV7850
 HV7850'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 HV7850'IN BETHESDA.
 HV7850'IN BETHESDA, SET IN THE FOUNDATION OF BETHESDA POST OFFICE AT THE
 HV7850'INTERSECTION OF WISCONSIN AVENUE AND MONTGOMERY LANE, 9.5 FEET SOUTH
 HV7850'OF THE CENTER OF THE MAIN ENTRANCE DOORS TO THE POST OFFICE, 20.8
 HV7850'FEET WEST OF THE WEST CURB OF THE AVENUE, 21.5 FEET NORTH OF THE
 HV7850'SOUTHEAST CORNER OF THE BUILDING.
 HV7850'THE MARK IS ABOVE LEVEL WITH AVENUE.
 HV7850
 HV7850                          STATION RECOVERY (1995)
 HV7850
 HV7850'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV7850'RECOVERED IN GOOD CONDITION.
 HV7850
 HV7850                          STATION RECOVERY (2000)
 HV7850
 HV7850'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV7850'RECOVERED IN GOOD CONDITION.
 HV7850
 HV7850                          STATION RECOVERY (2006)
 HV7850
 HV7850'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 HV7850'RECOVERED IN GOOD CONDITION.
 HV7850
 HV7850                          STATION RECOVERY (2009)
 HV7850
 HV7850'RECOVERY NOTE BY GEOCACHING 2009 (JA)
 HV7850'RECOVERED IN GOOD CONDITION.
 HV7850
 HV7850                          STATION RECOVERY (2022)
 HV7850
 HV7850'RECOVERY NOTE BY 3001, INC 2022 (SD)
 HV7850'RECOVERED IN GOOD CONDITION.
 HV7850
 HV7850                          STATION RECOVERY (2023)
 HV7850
 HV7850'RECOVERY NOTE BY 3001, INC 2023 (AL)
 HV7850'RECOVERED IN GOOD CONDITION.
 HV7850
 HV7850                          STATION RECOVERY (2024)
 HV7850
 HV7850'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2024 (CH)
 HV7850'RECOVERED IN GOOD CONDITION.
 HV7850
 HV7850                          STATION RECOVERY (2024)
 HV7850
 HV7850'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2024 (CH)
 HV7850'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3892 ***********************************************************************
 JV3892  DESIGNATION -  B 148
 JV3892  PID         -  JV3892
 JV3892  STATE/COUNTY-  MD/CECIL
 JV3892  COUNTRY     -  US
 JV3892  USGS QUAD   -  CONOWINGO DAM (2016)
 JV3892
 JV3892                         *CURRENT SURVEY CONTROL
 JV3892  ______________________________________________________________________
 JV3892* NAD 83(1986) POSITION- 39 41 01.8    (N) 076 11 51.0    (W)   HD_HELD2
 JV3892* NAVD 88 ORTHO HEIGHT -    46.462 (meters)      152.43  (feet) ADJUSTED
 JV3892  ______________________________________________________________________
 JV3892  GEOID HEIGHT    -        -32.890 (meters)                     GEOID18
 JV3892  DYNAMIC HEIGHT  -         46.439 (meters)      152.36  (feet) COMP
 JV3892  MODELED GRAVITY -    980,142.5   (mgal)                       NAVD 88
 JV3892  OBS GRAVITY     -    980,150.6   (mgal)                       GRAV_OBS
 JV3892
 JV3892  VERT ORDER      -  FIRST     CLASS II
 JV3892
 JV3892.The horizontal coordinates were established by autonomous hand held GPS
 JV3892.observations and have an estimated accuracy of +/- 10 meters.
 JV3892
 JV3892.The orthometric height was determined by differential leveling and
 JV3892.adjusted by the NATIONAL GEODETIC SURVEY
 JV3892.in June 1991.
 JV3892
 JV3892.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3892.GEOID18 height accuracy estimate available here.
 JV3892
 JV3892.Click photographs - Photos may exist for this station.
 JV3892
 JV3892.The dynamic height is computed by dividing the NAVD 88
 JV3892.geopotential number by the normal gravity value computed on the
 JV3892.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3892.degrees latitude (g = 980.6199 gals.).
 JV3892
 JV3892.The modeled gravity was interpolated from observed gravity values.
 JV3892
 JV3892.The observed gravity was obtained from relative gravimeter ties
 JV3892.to the IGSN71 gravity network.
 JV3892
 JV3892;                    North         East    Units  Estimated Accuracy
 JV3892;SPC MD       -   224,229.      468,846.      MT  (+/- 10 meters HH2 GPS)
 JV3892
 JV3892_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9731093352(NAD 83)
 JV3892
 JV3892                          SUPERSEDED SURVEY CONTROL
 JV3892
 JV3892.No superseded survey control is available for this station.
 JV3892
 JV3892_MARKER: DV = VERTICAL CONTROL DISK
 JV3892_SETTING: 66 = SET IN ROCK OUTCROP
 JV3892_STAMPING: B 148 1979
 JV3892_MARK LOGO: NGS
 JV3892_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3892+STABILITY: POSITION/ELEVATION WELL
 JV3892
 JV3892  HISTORY     - Date     Condition        Report By
 JV3892  HISTORY     - 1979     MONUMENTED       NGS
 JV3892  HISTORY     - 19960420 GOOD             USPSQD
 JV3892  HISTORY     - 20120308 GOOD             CCDES
 JV3892  HISTORY     - 20250917 GOOD             PROFLN
 JV3892
 JV3892                          STATION DESCRIPTION
 JV3892
 JV3892'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3892'1.8 MI NW FROM CONOWINGO.
 JV3892'1.75 MILES NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV3892'STATION AT CONWINGO DAM, 0.25 MILES SOUTHEAST OF MILE POST 12,
 JV3892'0.05 MILE NORTH AND ACROSS A PAVED ROAD FROM THE NORTH CORNER
 JV3892'OF A RAILROAD BRIDGE OVER CONOWINGO CREEK.  INSIDE OF AND
 JV3892'AT THE NORTHEAST END OF A CURVE IN THE PAVED ROAD.  IN
 JV3892'THE TOP OF A 3 BY 2 FOOT ROCK, OUTCROP, AAT THE BASE OF A
 JV3892'CUT, 2 FEET ABOVE GROUND, 183 FEET NORTHEAST AND UP A STEEP BANK
 JV3892'FROM THE NORTHEAST RAIL OF THE MAIN TRACK, 213.5 FEET SOUTHWEST
 JV3892'OF THE NORTHWEST END OF A 16 INCH PIPE CULVERT UNDER THE ROAD,
 JV3892'32 FEET EAST OF A 36 INCH TREE AND 15 FEET NORTHWEST OF THE
 JV3892'CENTER OF THE ROAD.
 JV3892'THE MARK IS 30 FT ABOVE TRACKS.
 JV3892
 JV3892                          STATION RECOVERY (1996)
 JV3892
 JV3892'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV3892'RECOVERED IN GOOD CONDITION.
 JV3892
 JV3892                          STATION RECOVERY (2012)
 JV3892
 JV3892'RECOVERY NOTE BY CECIL COUNTY DEPARTMENT OF 2012 (JEH)
 JV3892'RECOVERED IN GOOD CONDITION.
 JV3892
 JV3892                          STATION RECOVERY (2025)
 JV3892
 JV3892'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV3892'NORTHBOUND ON BELL MANOR ROAD, THE TANGENTS OF THE CURVE EXTEND
 JV3892'SOUTHWEST AND NORTHWEST. THE FACES OF THE BOULDER MAKE A TRIANGLE THAT
 JV3892'POINTS SE TOWARD THE ROAD.  THE MARK IS 92 FT (28.0 M) NORTHEAST AND
 JV3892'DIAGONAL ACROSS THE ROAD FROM A COLUMBIA GAS TRANSMISSION YELLOW
 JV3892'MARKER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0672 ***********************************************************************
 JW0672  DESIGNATION -  B 15
 JW0672  PID         -  JW0672
 JW0672  STATE/COUNTY-  MD/GARRETT
 JW0672  COUNTRY     -  US
 JW0672  USGS QUAD   -  OAKLAND (2016)
 JW0672
 JW0672                         *CURRENT SURVEY CONTROL
 JW0672  ______________________________________________________________________
 JW0672* NAD 83(1986) POSITION- 39 25 17.     (N) 079 25 27.     (W)   SCALED
 JW0672* NAVD 88 ORTHO HEIGHT -   725.845 (meters)     2381.38  (feet) ADJUSTED
 JW0672  ______________________________________________________________________
 JW0672  GEOID HEIGHT    -        -31.146 (meters)                     GEOID18
 JW0672  DYNAMIC HEIGHT  -        725.356 (meters)     2379.77  (feet) COMP
 JW0672  MODELED GRAVITY -    979,927.4   (mgal)                       NAVD 88
 JW0672
 JW0672  VERT ORDER      -  FIRST     CLASS II
 JW0672
 JW0672.The horizontal coordinates were scaled from a map and have
 JW0672.an estimated accuracy of +/- 6 seconds.
 JW0672
 JW0672.The orthometric height was determined by differential leveling and
 JW0672.adjusted by the NATIONAL GEODETIC SURVEY
 JW0672.in June 1991.
 JW0672
 JW0672.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0672.GEOID18 height accuracy estimate available here.
 JW0672
 JW0672.Click photographs - Photos may exist for this station.
 JW0672
 JW0672.The dynamic height is computed by dividing the NAVD 88
 JW0672.geopotential number by the normal gravity value computed on the
 JW0672.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0672.degrees latitude (g = 980.6199 gals.).
 JW0672
 JW0672.The modeled gravity was interpolated from observed gravity values.
 JW0672
 JW0672;                    North         East    Units  Estimated Accuracy
 JW0672;SPC MD       -   197,560.      191,280.      MT  (+/- 180 meters Scaled)
 JW0672
 JW0672_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD356647(NAD 83)
 JW0672
 JW0672                          SUPERSEDED SURVEY CONTROL
 JW0672
 JW0672  NGVD 29 (??/??/92)  725.990  (m)         2381.85   (f) ADJ UNCH    1 2
 JW0672
 JW0672.Superseded values are not recommended for survey control.
 JW0672
 JW0672.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0672.See file dsdata.pdf to determine how the superseded data were derived.
 JW0672
 JW0672_MARKER: DB = BENCH MARK DISK
 JW0672_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0672_SP_SET: BRIDGE
 JW0672_STAMPING: B 15 1935
 JW0672_MARK LOGO: CGS
 JW0672_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0672
 JW0672  HISTORY     - Date     Condition        Report By
 JW0672  HISTORY     - 1935     MONUMENTED       CGS
 JW0672  HISTORY     - 1942     GOOD             CGS
 JW0672
 JW0672                          STATION DESCRIPTION
 JW0672
 JW0672'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0672'1.4 MI W FROM OAKLAND.
 JW0672'ABOUT 1.4 MILES WEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JW0672'THE CROSSING OF SECOND STREET AT OAKLAND, GARRETT COUNTY, AT POLE
 JW0672'233+25, 9 FEET NORTH OF THE CENTER LINE OF THE NORTH TRACK, AT
 JW0672'BRIDGE 88, IN THE TOP OF THE NORTHWEST CORNER OF THE WEST CONCRETE
 JW0672'ABUTMENT, AND ABOUT 1-1/2 FEET LOWER THAN THE TRACK.  A STANDARD
 JW0672'DISK, STAMPED B 15 1935.
 JW0672
 JW0672                          STATION RECOVERY (1942)
 JW0672
 JW0672'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JW0672'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6013 ***********************************************************************
 DN6013  DESIGNATION -  B 15
 DN6013  PID         -  DN6013
 DN6013  STATE/COUNTY-  MD/CARROLL
 DN6013  COUNTRY     -  US
 DN6013  USGS QUAD   -  MANCHESTER (2016)
 DN6013
 DN6013                         *CURRENT SURVEY CONTROL
 DN6013  ______________________________________________________________________
 DN6013* NAD 83(1986) POSITION- 39 40 33.0    (N) 076 55 44.1    (W)   HD_HELD2
 DN6013* NAVD 88 ORTHO HEIGHT -   228.434 (meters)      749.45  (feet) ADJUSTED
 DN6013  ______________________________________________________________________
 DN6013  GEOID HEIGHT    -        -32.437 (meters)                     GEOID18
 DN6013  DYNAMIC HEIGHT  -        228.315 (meters)      749.06  (feet) COMP
 DN6013  MODELED GRAVITY -    980,102.4   (mgal)                       NAVD 88
 DN6013
 DN6013  VERT ORDER      -  SECOND    CLASS II
 DN6013
 DN6013.The horizontal coordinates were established by autonomous hand held GPS
 DN6013.observations and have an estimated accuracy of +/- 10 meters.
 DN6013
 DN6013.The orthometric height was determined by differential leveling and
 DN6013.adjusted by the NATIONAL GEODETIC SURVEY
 DN6013.in June 2012.
 DN6013
 DN6013.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6013.GEOID18 height accuracy estimate available here.
 DN6013
 DN6013.Click photographs - Photos may exist for this station.
 DN6013
 DN6013.The dynamic height is computed by dividing the NAVD 88
 DN6013.geopotential number by the normal gravity value computed on the
 DN6013.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6013.degrees latitude (g = 980.6199 gals.).
 DN6013
 DN6013.The modeled gravity was interpolated from observed gravity values.
 DN6013
 DN6013;                    North         East    Units  Estimated Accuracy
 DN6013;SPC MD       -   223,040.      406,099.      MT  (+/- 10 meters HH2 GPS)
 DN6013
 DN6013_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3456693557(NAD 83)
 DN6013
 DN6013                          SUPERSEDED SURVEY CONTROL
 DN6013
 DN6013.No superseded survey control is available for this station.
 DN6013
 DN6013_MARKER: DD = SURVEY DISK
 DN6013_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DN6013_SP_SET: HEADWALL
 DN6013_STAMPING: B-15 1982
 DN6013_MARK LOGO: MD-013
 DN6013_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DN6013_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6013+STABILITY: SURFACE MOTION
 DN6013_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DN6013+SATELLITE: SATELLITE OBSERVATIONS - January 30, 2008
 DN6013
 DN6013  HISTORY     - Date     Condition        Report By
 DN6013  HISTORY     - 1982     MONUMENTED       MD-013
 DN6013  HISTORY     - 20080130 GOOD             MDSHA
 DN6013
 DN6013                          STATION DESCRIPTION
 DN6013
 DN6013'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6013'THE MARK IS LOCATED ABOUT 7.6 MI (12.2 KM) NORTHEAST OF WESTMINSTER
 DN6013'AND 2.5 MI (4.0 KM) NORTHWEST OF MANCHESTER.
 DN6013'
 DN6013'TO REACH THE MARK FROM THE JUNCTION OF MARYLAND ROUTE 27 AND MARYLAND
 DN6013'ROUTE 30 IN MANCHESTER, GO NORTHWEST ALONG MARYLAND ROUTE 30 FOR 2.6
 DN6013'MI (4.2 KM) TO THE JUNCTION WITH MARYLAND ROUTE 496 ON THE LEFT.  TURN
 DN6013'LEFT AND GO SOUTHWEST ALONG MARYLAND ROUTE 496 FOR 2.1 MI (3.4 KM) TO
 DN6013'THE MARK ON THE LEFT.
 DN6013'
 DN6013'IT IS 400 FT (121.9 M) NORTH ALONG MARYLAND ROUTE 496 FROM THE
 DN6013'JUNCTION WITH HOOVER MILLING ROAD, 32.0 FT (9.8 M) EAST OF THE CENTER
 DN6013'OF MARYLAND ROUTE 496 AND 50.2 FT (15.3 M) NORTHEAST OF G AND E POLE
 DN6013'NUMBER 211547 AND SET IN THE TOP OF THE SOUTHERN-MOST END OF A
 DN6013'CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3890 ***********************************************************************
 JV3890  DESIGNATION -  B 165
 JV3890  PID         -  JV3890
 JV3890  STATE/COUNTY-  MD/CECIL
 JV3890  COUNTRY     -  US
 JV3890  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV3890
 JV3890                         *CURRENT SURVEY CONTROL
 JV3890  ______________________________________________________________________
 JV3890* NAD 83(1986) POSITION- 39 34 39.50   (N) 076 04 02.07   (W)   HD_HELD1
 JV3890* NAVD 88 ORTHO HEIGHT -    47.886 (meters)      157.11  (feet) ADJUSTED
 JV3890  ______________________________________________________________________
 JV3890  GEOID HEIGHT    -        -33.118 (meters)                     GEOID18
 JV3890  DYNAMIC HEIGHT  -         47.862 (meters)      157.03  (feet) COMP
 JV3890  MODELED GRAVITY -    980,126.1   (mgal)                       NAVD 88
 JV3890  OBS GRAVITY     -    980,122.6   (mgal)                       GRAV_OBS
 JV3890
 JV3890  VERT ORDER      -  FIRST     CLASS II
 JV3890
 JV3890.The horizontal coordinates were determined by differentially corrected
 JV3890.hand held GPS observations or other comparable positioning techniques
 JV3890.and have an estimated accuracy of +/- 3 meters.
 JV3890
 JV3890.The orthometric height was determined by differential leveling and
 JV3890.adjusted by the NATIONAL GEODETIC SURVEY
 JV3890.in July 2019.
 JV3890
 JV3890.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3890.GEOID18 height accuracy estimate available here.
 JV3890
 JV3890.Click photographs - Photos may exist for this station.
 JV3890
 JV3890.The dynamic height is computed by dividing the NAVD 88
 JV3890.geopotential number by the normal gravity value computed on the
 JV3890.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3890.degrees latitude (g = 980.6199 gals.).
 JV3890
 JV3890.The modeled gravity was interpolated from observed gravity values.
 JV3890
 JV3890.The observed gravity was obtained from relative gravimeter ties
 JV3890.to the IGSN71 gravity network.
 JV3890
 JV3890;                    North         East    Units  Estimated Accuracy
 JV3890;SPC MD       -   212,544.4     480,141.0     MT  (+/- 3 meters HH1 GPS) 
 JV3890
 JV3890_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0834081424(NAD 83)
 JV3890
 JV3890                          SUPERSEDED SURVEY CONTROL
 JV3890
 JV3890  NAVD 88 (06/15/91)   47.892  (m)          157.13   (f) SUPERSEDED  1 2
 JV3890
 JV3890.Superseded values are not recommended for survey control.
 JV3890
 JV3890.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3890.See file dsdata.pdf to determine how the superseded data were derived.
 JV3890
 JV3890_MARKER: F = FLANGE-ENCASED ROD
 JV3890_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV3890_STAMPING: B 165 1978
 JV3890_MARK LOGO: NGS
 JV3890_PROJECTION: RECESSED 23 CENTIMETERS
 JV3890_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3890_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3890+STABILITY: POSITION/ELEVATION WELL
 JV3890_ROD/PIPE-DEPTH: 5.8 meters
 JV3890_SLEEVE-DEPTH  : 3.1 meters
 JV3890
 JV3890  HISTORY     - Date     Condition        Report By
 JV3890  HISTORY     - 1978     MONUMENTED       NGS
 JV3890  HISTORY     - 19901113 MARK NOT FOUND   USPSQD
 JV3890  HISTORY     - 20140530 GOOD             JARICE
 JV3890  HISTORY     - 20251006 GOOD             PROFLN
 JV3890
 JV3890                          STATION DESCRIPTION
 JV3890
 JV3890'DESCRIBED BY NATIONAL GEODETIC SURVEY 1978
 JV3890'IN PERRYVILLE.
 JV3890'0.6 MILE NORTH ALONG US HIGHWAY 222 FROM ITS JUNCTION WITH US HIGHWAY
 JV3890'40, AT THE INTERSECTION OF ROUTE 222 WITH CEDAR RIVER ROAD AND
 JV3890'CLAYTON STREET ON THE NORTHERN BOUNDARY OF THE GROUNDS OF THE
 JV3890'PATTERSON FUNERAL HOME, 1495 CLAYTON STREET, 32.5 FEET WEST OF THE
 JV3890'CENTERLINE OF HIGHWAY 222, 46 FEET NORTH-NORTHEAST OF THE
 JV3890'NORTHEAST CORNER OF THE CONCRETE PATIO OF THE FUNERAL HOME, 14 FEET
 JV3890'SOUTHEAST OF A 32 INCH OAK TREE, 4.5 FEET NORTH OF THE NORTH EDGE
 JV3890'OF A PAVED DRIVEWAY, AND SET IN LINE WITH A WHITE-WASHED WOODEN
 JV3890'FENCE.  THIS BENCH MARK HAS BEEN DESIGNATED A BASIC NET A LEVEL
 JV3890'LINE JUNCTION MARK.
 JV3890'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JV3890
 JV3890                          STATION RECOVERY (1990)
 JV3890
 JV3890'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV3890'MARK NOT FOUND.
 JV3890
 JV3890                          STATION RECOVERY (2014)
 JV3890
 JV3890'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JV3890'RECOVERED IN GOOD CONDITION.
 JV3890'
 JV3890'NOTE-THE MARK WAS FOUND WITH THE LOGO CAP BROKEN.  A NEW LOGO CAP WAS
 JV3890'CEMENTED TO THE ORIGINAL CASING AND STAMPED WITH THE ORIGINAL
 JV3890'STAMPING.
 JV3890
 JV3890                          STATION RECOVERY (2025)
 JV3890
 JV3890'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV3890'THE MARK IS ABOUT 3 FT (0.9 M) NORTH OF BEING OPPOSITE THE FRONT DOOR
 JV3890'OF CEDAR CORNER BUILDING ACROSS THE HIGHWAY - TWO STORY CREAM BRICK
 JV3890'OFFICE BUILDING - 1 FT (0.3 M) NORTHWEST TOWARD THE FUNERAL HOME FROM
 JV3890'THE SE (OUTER) EDGE OF THE CONCRETE PATIO EXTENDED, AT THE SOUTHEAST
 JV3890'CORNER OF THE LAWN AREA, 16 FT (4.9 M) NORTH OF THE ASPHALT DRIVEWAY
 JV3890'TO 1497, 7.5 FT (2.3 M) WEST OF THE WEST CURB, 1.5 FT (0.5 M) WEST OF
 JV3890'THE WEST SIDE OF NEW SIDEWALK.  LOGO CAP AND KICK BLOCK 0.3 FT (9 CM)
 JV3890'HIGHER THAN THE SIDEWALK, ROD RECESSED 9 INCHES (23 CM).  THE OAK TREE
 JV3890'AND THE FENCE ARE GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1139 ***********************************************************************
 JW1139  DESIGNATION -  B 167
 JW1139  PID         -  JW1139
 JW1139  STATE/COUNTY-  MD/GARRETT
 JW1139  COUNTRY     -  US
 JW1139  USGS QUAD   -  OAKLAND (2016)
 JW1139
 JW1139                         *CURRENT SURVEY CONTROL
 JW1139  ______________________________________________________________________
 JW1139* NAD 83(1986) POSITION- 39 23 24.5    (N) 079 26 52.1    (W)   HD_HELD2
 JW1139* NAVD 88 ORTHO HEIGHT -   787.376 (meters)     2583.25  (feet) ADJUSTED
 JW1139  ______________________________________________________________________
 JW1139  GEOID HEIGHT    -        -31.110 (meters)                     GEOID18
 JW1139  DYNAMIC HEIGHT  -        786.839 (meters)     2581.49  (feet) COMP
 JW1139  MODELED GRAVITY -    979,917.7   (mgal)                       NAVD 88
 JW1139
 JW1139  VERT ORDER      -  FIRST     CLASS II
 JW1139
 JW1139.The horizontal coordinates were established by autonomous hand held GPS
 JW1139.observations and have an estimated accuracy of +/- 10 meters.
 JW1139
 JW1139.The orthometric height was determined by differential leveling and
 JW1139.adjusted by the NATIONAL GEODETIC SURVEY
 JW1139.in June 1991.
 JW1139
 JW1139.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1139.GEOID18 height accuracy estimate available here.
 JW1139
 JW1139.Click photographs - Photos may exist for this station.
 JW1139
 JW1139.The dynamic height is computed by dividing the NAVD 88
 JW1139.geopotential number by the normal gravity value computed on the
 JW1139.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1139.degrees latitude (g = 980.6199 gals.).
 JW1139
 JW1139.The modeled gravity was interpolated from observed gravity values.
 JW1139
 JW1139;                    North         East    Units  Estimated Accuracy
 JW1139;SPC MD       -   194,145.      189,152.      MT  (+/- 10 meters HH2 GPS)
 JW1139
 JW1139_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3366961221(NAD 83)
 JW1139
 JW1139                          SUPERSEDED SURVEY CONTROL
 JW1139
 JW1139.No superseded survey control is available for this station.
 JW1139
 JW1139_MARKER: DV = VERTICAL CONTROL DISK
 JW1139_SETTING: 66 = SET IN ROCK OUTCROP
 JW1139_STAMPING: B 167 1983
 JW1139_MARK LOGO: NGS
 JW1139_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1139+STABILITY: POSITION/ELEVATION WELL
 JW1139
 JW1139  HISTORY     - Date     Condition        Report By
 JW1139  HISTORY     - 1983     MONUMENTED       NGS
 JW1139
 JW1139                          STATION DESCRIPTION
 JW1139
 JW1139'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1139'4.7 KM (2.9 MI) WEST FROM OAKLAND.
 JW1139'4.7 KM (2.9 MI) WEST ALONG STATE HIGHWAY 39 FROM THE JUNCTION OF U.S.
 JW1139'HIGHWAY 219 IN OAKLAND TO THE MARK ON THE RIGHT, IN TOP OF THE EAST
 JW1139'END OF A 3.0 BY 4.6 METER (10.0 BY 15.0 FOOT) EXPOSED BEDROCK, IN THE
 JW1139'FRONT LAWN OF A SINGLE STORY FRAME HOUSE, 18.28 METERS (60.0 FT) NORTH
 JW1139'OF THE CENTERLINE OF THE HIGHWAY, 16.45 METERS (54.5 FT) SOUTHEAST OF
 JW1139'THE SOUTHEAST CORNER OF THE HOUSE, 3.96 METERS (13.0 FT) WEST OF THE
 JW1139'SOUTHWEST CORNER OF A WOODEN GARAGE, 3.35 METERS (11.0 FT) NORTHWEST
 JW1139'OF A 36-CENTIMETER (14-INCH) BLACK WALNUT TREE.
 JW1139'THE MARK IS 0.30 M BELOW HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1164 ***********************************************************************
 JW1164  DESIGNATION -  B 168
 JW1164  PID         -  JW1164
 JW1164  STATE/COUNTY-  MD/ALLEGANY
 JW1164  COUNTRY     -  US
 JW1164  USGS QUAD   -  KEYSER (2016)
 JW1164
 JW1164                         *CURRENT SURVEY CONTROL
 JW1164  ______________________________________________________________________
 JW1164* NAD 83(1986) POSITION- 39 27 42.     (N) 078 58 20.     (W)   SCALED
 JW1164* NAVD 88 ORTHO HEIGHT -   268.109 (meters)      879.62  (feet) ADJUSTED
 JW1164  ______________________________________________________________________
 JW1164  GEOID HEIGHT    -        -32.274 (meters)                     GEOID18
 JW1164  DYNAMIC HEIGHT  -        267.943 (meters)      879.08  (feet) COMP
 JW1164  MODELED GRAVITY -    980,002.6   (mgal)                       NAVD 88
 JW1164
 JW1164  VERT ORDER      -  FIRST     CLASS II
 JW1164
 JW1164.The horizontal coordinates were scaled from a map and have
 JW1164.an estimated accuracy of +/- 6 seconds.
 JW1164
 JW1164.The orthometric height was determined by differential leveling and
 JW1164.adjusted by the NATIONAL GEODETIC SURVEY
 JW1164.in June 1991.
 JW1164
 JW1164.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1164.GEOID18 height accuracy estimate available here.
 JW1164
 JW1164.Click photographs - Photos may exist for this station.
 JW1164
 JW1164.The dynamic height is computed by dividing the NAVD 88
 JW1164.geopotential number by the normal gravity value computed on the
 JW1164.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1164.degrees latitude (g = 980.6199 gals.).
 JW1164
 JW1164.The modeled gravity was interpolated from observed gravity values.
 JW1164
 JW1164;                    North         East    Units  Estimated Accuracy
 JW1164;SPC MD       -   201,090.      230,280.      MT  (+/- 180 meters Scaled)
 JW1164
 JW1164_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD744699(NAD 83)
 JW1164
 JW1164                          SUPERSEDED SURVEY CONTROL
 JW1164
 JW1164.No superseded survey control is available for this station.
 JW1164
 JW1164_MARKER: I = METAL ROD
 JW1164_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JW1164_STAMPING: B 168 1983
 JW1164_MARK LOGO: NGS
 JW1164_PROJECTION: FLUSH
 JW1164_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1164_ROD/PIPE-DEPTH: 7.3 meters
 JW1164
 JW1164  HISTORY     - Date     Condition        Report By
 JW1164  HISTORY     - 1983     MONUMENTED       NGS
 JW1164
 JW1164                          STATION DESCRIPTION
 JW1164
 JW1164'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1164'21.0 KM (13.0 MI) SW FROM CRESAPTOWN.
 JW1164'21.0 KM (13.0 MI) SOUTHWEST ALONG U.S. HIGHWAY 220 FROM THE CALVARY
 JW1164'BAPTIST CHURCH IN CRESAPTOWN TO THE MARK ON THE RIGHT, 11.60 METERS
 JW1164'(38.0 FT) NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 6.70 METERS
 JW1164'(22.0 FT) NORTHEAST OF THE NORTHEAST EDGE OF A CONCRETE DRIVEWAY FOR A
 JW1164'SINGLE STORY FRAME HOUSE, 0.45 METER (1.5 FT) NORTHWEST OF THE
 JW1164'SOUTHWEST END OF THE METAL CABLE GUARDRAIL.
 JW1164'THE MARK IS 0.45 METERS  NW FROM A WITNESS POST.
 JW1164'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1188 ***********************************************************************
 JW1188  DESIGNATION -  B 169
 JW1188  PID         -  JW1188
 JW1188  STATE/COUNTY-  MD/ALLEGANY
 JW1188  COUNTRY     -  US
 JW1188  USGS QUAD   -  FLINTSTONE (2016)
 JW1188
 JW1188                         *CURRENT SURVEY CONTROL
 JW1188  ______________________________________________________________________
 JW1188* NAD 83(2011) POSITION- 39 41 42.51876(N) 078 32 53.41892(W)   ADJUSTED
 JW1188* NAD 83(2011) ELLIP HT-   207.728 (meters)        (02/22/22)   ADJUSTED
 JW1188* NAD 83(2011) EPOCH   -  2010.00
 JW1188* NAVD 88 ORTHO HEIGHT -   240.854 (meters)      790.20  (feet) ADJUSTED
 JW1188  ______________________________________________________________________
 JW1188  GEOID HEIGHT    -        -33.125 (meters)                     GEOID18
 JW1188  NAD 83(2011) X  -    975,755.499 (meters)                     COMP
 JW1188  NAD 83(2011) Y  - -4,816,716.776 (meters)                     COMP
 JW1188  NAD 83(2011) Z  -  4,052,130.903 (meters)                     COMP
 JW1188  LAPLACE CORR    -         -4.41  (seconds)                    DEFLEC18
 JW1188  DYNAMIC HEIGHT  -        240.714 (meters)      789.74  (feet) COMP
 JW1188  MODELED GRAVITY -    980,039.3   (mgal)                       NAVD 88
 JW1188
 JW1188  VERT ORDER      -  FIRST     CLASS II
 JW1188
 JW1188  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1188  Standards:
 JW1188         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1188            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1188  -------------------------------------------------------------------
 JW1188  NETWORK    1.14   2.18           0.50   0.43   1.11      0.04707313
 JW1188  -------------------------------------------------------------------
 JW1188  Click here for local accuracies and other accuracy information.
 JW1188
 JW1188.The horizontal coordinates were established by GPS observations
 JW1188.and adjusted by the GEOPRO CONSULTANTS LLC in February 2022.
 JW1188
 JW1188.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1188.been affixed to the stable North American tectonic plate. See 
 JW1188.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1188
 JW1188.The horizontal coordinates are valid at the epoch date displayed above
 JW1188.which is a decimal equivalence of Year/Month/Day.
 JW1188
 JW1188.The orthometric height was determined by differential leveling and
 JW1188.adjusted by the NATIONAL GEODETIC SURVEY
 JW1188.in June 1991.
 JW1188
 JW1188.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1188.GEOID18 height accuracy estimate available here.
 JW1188
 JW1188.Click photographs - Photos may exist for this station.
 JW1188
 JW1188.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1188
 JW1188.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1188
 JW1188.The ellipsoidal height was determined by GPS observations
 JW1188.and is referenced to NAD 83.
 JW1188
 JW1188.The dynamic height is computed by dividing the NAVD 88
 JW1188.geopotential number by the normal gravity value computed on the
 JW1188.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1188.degrees latitude (g = 980.6199 gals.).
 JW1188
 JW1188.The modeled gravity was interpolated from observed gravity values.
 JW1188
 JW1188. The following values were computed from the NAD 83(2011) position.
 JW1188
 JW1188;                    North         East     Units Scale Factor Converg.
 JW1188;SPC MD       -   226,307.834   267,209.041   MT  1.00005209   -0 58 18.1
 JW1188;SPC MD       -   742,478.29    876,668.33   sFT  1.00005209   -0 58 18.1
 JW1188;UTM  17      - 4,396,795.979   710,226.987   MT  1.00014414   +1 33 59.6
 JW1188
 JW1188!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1188!SPC MD       -   0.99996741  x   1.00005209  =   1.00001950
 JW1188!UTM  17      -   0.99996741  x   1.00014414  =   1.00011155
 JW1188
 JW1188_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD1022696795(NAD 83)
 JW1188
 JW1188                          SUPERSEDED SURVEY CONTROL
 JW1188
 JW1188.No superseded survey control is available for this station.
 JW1188
 JW1188_MARKER: DV = VERTICAL CONTROL DISK
 JW1188_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW1188_SP_SET: BRIDGE ABUTMENT
 JW1188_STAMPING: B 169 1983
 JW1188_MARK LOGO: NGS
 JW1188_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1188_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1188_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1188+SATELLITE: SATELLITE OBSERVATIONS - October 03, 2021
 JW1188
 JW1188  HISTORY     - Date     Condition        Report By
 JW1188  HISTORY     - 1983     MONUMENTED       NGS
 JW1188  HISTORY     - 19921105 GOOD             MDSHA
 JW1188  HISTORY     - 20110618 GOOD             GEOCAC
 JW1188  HISTORY     - 20211003 GOOD             GEOPRO
 JW1188
 JW1188                          STATION DESCRIPTION
 JW1188
 JW1188'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1188'2.1 KM (1.3 MI) EAST FROM FLINTSTONE.
 JW1188'THE MARK IS 1.8 M BELOW HIGHWAY.
 JW1188'2.1 KM (1.3 MI) EAST ALONG U.S. HIGHWAY 40 FROM THE WEST END OF THE
 JW1188'HIGHWAY BRIDGE OVER FLINTSTONE CREEK IN FLINTSTONE TO THE MARK ON THE
 JW1188'RIGHT, IN TOP OF THE SOUTH END OF THE WEST ABUTMENT OF THE HIGHWAY
 JW1188'BRIDGE OVER TOWN CREEK, 6.70 METERS (22.0 FT) SOUTH OF THE CENTERLINE
 JW1188'OF THE HIGHWAY, 4.0 METERS (13.0 FT) EAST OF THE WEST END OF THE
 JW1188'BRIDGE.
 JW1188
 JW1188                          STATION RECOVERY (1992)
 JW1188
 JW1188'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1188'THE MARK WAS RECOVERED AND FOUND IN GOOD CONDITION.  DUE TO CHANGES
 JW1188'IN THE AREA AND THE CONSTRUCTION OF INTERSTATE HIGHWAY 68, A COMPLETE
 JW1188'NEW DESCRIPTION IS REQUIRED.  THE MARKER IS LOCATED ABOUT 1.0 MI (1.6
 JW1188'KM) EAST-SOUTHEAST OF FLINTSTONE, 2.2 MI (3.5 KM) WEST OF PRATT AND
 JW1188'9.6 MI (15.4 KM) WEST OF PINEY GROVE.  TO REACH FROM THE POST OFFICE
 JW1188'AT FLINTSTONE, GO EAST ON MARYLAND ROUTE 144 FOR 1.4 MI (2.3 KM) TO
 JW1188'THE MARKER ON THE RIGHT IN A BRIDGE ABUTMENT.  THE POINT IS MARKED
 JW1188'WITH A STANDARD NATIONAL GEODETIC SURVEY VERTICAL CONTROL DISK,
 JW1188'CEMENTED IN A DRILL HOLE IN THE SOUTHWEST END OF THE MOST WESTERLY
 JW1188'ABUTMENT FOR A BRIDGE NUMBERED 1035 WHERE THE MARYLAND ROUTE 144
 JW1188'PASSES OVER TOWN CREEK.  IT IS 22.0 FT (6.7 M) SOUTH OF THE
 JW1188'CENTERLINE OF MARYLAND ROUTE 144, 13.0 FT (4.0 M) EAST OF THE WEST
 JW1188'END OF THE BRIDGE AND ABOUT 6.0 FT (1.8 M) LOWER THAN THE SURFACE OF
 JW1188'THE ROAD.
 JW1188
 JW1188                          STATION RECOVERY (2011)
 JW1188
 JW1188'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JW1188'RECOVERED IN GOOD CONDITION.
 JW1188
 JW1188                          STATION RECOVERY (2021)
 JW1188
 JW1188'RECOVERY NOTE BY GEOPRO CONSULTANTS LLC 2021 (CTS)
 JW1188'RECOVERED AS DESCRIBED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0677 ***********************************************************************
 JW0677  DESIGNATION -  B 17
 JW0677  PID         -  JW0677
 JW0677  STATE/COUNTY-  MD/GARRETT
 JW0677  COUNTRY     -  US
 JW0677  USGS QUAD   -  DEER PARK (2016)
 JW0677
 JW0677                         *CURRENT SURVEY CONTROL
 JW0677  ______________________________________________________________________
 JW0677* NAD 83(1986) POSITION- 39 28 28.08   (N) 079 21 22.29   (W)   HD_HELD1
 JW0677* NAVD 88 ORTHO HEIGHT -   875.238 (meters)     2871.51  (feet) ADJUSTED
 JW0677  ______________________________________________________________________
 JW0677  GEOID HEIGHT    -        -31.205 (meters)                     GEOID18
 JW0677  DYNAMIC HEIGHT  -        874.651 (meters)     2869.58  (feet) COMP
 JW0677  MODELED GRAVITY -    979,925.6   (mgal)                       NAVD 88
 JW0677
 JW0677  VERT ORDER      -  SECOND    CLASS 0
 JW0677
 JW0677.The horizontal coordinates were determined by differentially corrected
 JW0677.hand held GPS observations or other comparable positioning techniques
 JW0677.and have an estimated accuracy of +/- 3 meters.
 JW0677
 JW0677.The orthometric height was determined by differential leveling and
 JW0677.adjusted by the NATIONAL GEODETIC SURVEY
 JW0677.in June 1991.
 JW0677
 JW0677.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0677.GEOID18 height accuracy estimate available here.
 JW0677
 JW0677.Click photographs - Photos may exist for this station.
 JW0677
 JW0677.The dynamic height is computed by dividing the NAVD 88
 JW0677.geopotential number by the normal gravity value computed on the
 JW0677.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0677.degrees latitude (g = 980.6199 gals.).
 JW0677
 JW0677.The modeled gravity was interpolated from observed gravity values.
 JW0677
 JW0677;                    North         East    Units  Estimated Accuracy
 JW0677;SPC MD       -   203,296.3     197,283.4     MT  (+/- 3 meters HH1 GPS) 
 JW0677
 JW0677_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4138870720(NAD 83)
 JW0677
 JW0677                          SUPERSEDED SURVEY CONTROL
 JW0677
 JW0677  NGVD 29 (??/??/92)  875.375  (m)         2871.96   (f) ADJ UNCH    2 0
 JW0677
 JW0677.Superseded values are not recommended for survey control.
 JW0677
 JW0677.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0677.See file dsdata.pdf to determine how the superseded data were derived.
 JW0677
 JW0677_MARKER: DB = BENCH MARK DISK
 JW0677_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0677_STAMPING: B 17 1935
 JW0677_MARK LOGO: CGS
 JW0677_PROJECTION: PROJECTING 8 CENTIMETERS
 JW0677_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0677+STABILITY: SURFACE MOTION
 JW0677_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW0677+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2016
 JW0677
 JW0677  HISTORY     - Date     Condition        Report By
 JW0677  HISTORY     - 1935     MONUMENTED       CGS
 JW0677  HISTORY     - 19900928 GOOD             NGS
 JW0677  HISTORY     - 20160923 GOOD             GEOCAC
 JW0677
 JW0677                          STATION DESCRIPTION
 JW0677
 JW0677'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0677'5.3 MI N FROM OAKLAND.
 JW0677'5.3 MILES NORTH ALONG U.S. HIGHWAY 219 FROM THE GARRETT COUNTY
 JW0677'HIGH SCHOOL AT OAKLAND, GARRETT COUNTY, AT THE TOP OF A HILL, 90
 JW0677'FEET NORTH OF THE NORTHWEST CORNER OF A SMALL FRAME HOUSE, AND
 JW0677'18 FEET EAST OF THE CENTER LINE OF THE HIGHWAY.  A STANDARD DISK,
 JW0677'STAMPED B 17 1935 AND SET IN THE TOP OF A CONCRETE POST.
 JW0677
 JW0677                          STATION RECOVERY (1990)
 JW0677
 JW0677'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW0677'9.1 KM (5.7 MI) NORTHEASTERLY ALONG U.S. HIGHWAY 219 FROM THE JUNCTION
 JW0677'OF STATE HIGHWAY 39 IN OAKLAND, THENCE 0.2 KM (0.1 MI) SOUTHWESTERLY
 JW0677'ALONG A PAVED ROAD (OLD U.S. HIGHWAY 219), 27.5 M (90.2 FT) WEST OF
 JW0677'THE WEST CORNER OF A HOUSE, 20.4 M (66.9 FT) EAST OF THE SOUTH CORNER
 JW0677'OF A CHAIN LINK FENCE, 15.9 M (52.2 FT) NORTH OF A UTILITY POLE, 15.3
 JW0677'M (50.2 FT) EAST-SOUTHEAST OF THE BASE OF AN ANTENNA TOWER, 13.1 M
 JW0677'(43.0 FT) SOUTHEAST OF THE NORTHEAST CORNER OF A CHAIN LINK FENCE,
 JW0677'5.1 M (16.7 FT) SOUTHEAST OF THE ROAD CENTER, 0.6 M (2.0 FT) ABOVE
 JW0677'THE LEVEL OF THE ROAD, 0.2 M (0.7 FT) NORTHWEST OF A WITNESS POST,
 JW0677'AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
 JW0677
 JW0677                          STATION RECOVERY (2016)
 JW0677
 JW0677'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW0677'THE WITNESS POST HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8271 ***********************************************************************
 HV8271  DESIGNATION -  B 170
 HV8271  PID         -  HV8271
 HV8271  STATE/COUNTY-  MD/TALBOT
 HV8271  COUNTRY     -  US
 HV8271  USGS QUAD   -  CAMBRIDGE (2016)
 HV8271
 HV8271                         *CURRENT SURVEY CONTROL
 HV8271  ______________________________________________________________________
 HV8271* NAD 83(1986) POSITION- 38 35 30.72   (N) 076 02 50.28   (W)   HD_HELD1
 HV8271* NAVD 88 ORTHO HEIGHT -     5.212 (meters)       17.10  (feet) ADJUSTED
 HV8271  ______________________________________________________________________
 HV8271  GEOID HEIGHT    -        -35.045 (meters)                     GEOID18
 HV8271  DYNAMIC HEIGHT  -          5.209 (meters)       17.09  (feet) COMP
 HV8271  MODELED GRAVITY -    980,019.2   (mgal)                       NAVD 88
 HV8271
 HV8271  VERT ORDER      -  SECOND    CLASS I
 HV8271
 HV8271.The horizontal coordinates were determined by differentially corrected
 HV8271.hand held GPS observations or other comparable positioning techniques
 HV8271.and have an estimated accuracy of +/- 3 meters.
 HV8271
 HV8271.The orthometric height was determined by differential leveling and
 HV8271.adjusted by the NATIONAL GEODETIC SURVEY
 HV8271.in October 1997.
 HV8271
 HV8271.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8271.GEOID18 height accuracy estimate available here.
 HV8271
 HV8271.Click photographs - Photos may exist for this station.
 HV8271
 HV8271.The dynamic height is computed by dividing the NAVD 88
 HV8271.geopotential number by the normal gravity value computed on the
 HV8271.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8271.degrees latitude (g = 980.6199 gals.).
 HV8271
 HV8271.The modeled gravity was interpolated from observed gravity values.
 HV8271
 HV8271;                    North         East    Units  Estimated Accuracy
 HV8271;SPC MD       -   103,133.9     482,996.3     MT  (+/- 3 meters HH1 GPS) 
 HV8271
 HV8271_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0879272007(NAD 83)
 HV8271
 HV8271                          SUPERSEDED SURVEY CONTROL
 HV8271
 HV8271  NGVD 29               5.45   (m)           17.9    (f) LEVELING    3  
 HV8271
 HV8271.Superseded values are not recommended for survey control.
 HV8271
 HV8271.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8271.See file dsdata.pdf to determine how the superseded data were derived.
 HV8271
 HV8271_MARKER: DV = VERTICAL CONTROL DISK
 HV8271_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 HV8271_SP_SET: BARRIER WALL
 HV8271_STAMPING: B 170 1986
 HV8271_MARK LOGO: NGS
 HV8271_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8271_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8271_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8271+SATELLITE: SATELLITE OBSERVATIONS - July 22, 2008
 HV8271
 HV8271  HISTORY     - Date     Condition        Report By
 HV8271  HISTORY     - 1986     MONUMENTED       NGS
 HV8271  HISTORY     - 19870101 GOOD             MDDT
 HV8271  HISTORY     - 20060114 GOOD             USPSQD
 HV8271  HISTORY     - 20070228 GOOD             USPSQD
 HV8271  HISTORY     - 20080722 GOOD             NGS
 HV8271
 HV8271                          STATION DESCRIPTION
 HV8271
 HV8271'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1987 (RGP)
 HV8271'AT THE NORTH END OF THE NEW CHOPTANK RIVER BRIDGE, IN THE EAST
 HV8271'CONCRETE BARRIER WALL. 2.6 M (8.5 FT) SSW FROM THE END OF THE BARRIER,
 HV8271'0.2 M (0.7 FT) WNW FROM THE EAST EDGE OF THE BARRIER, 19.5 M (64.0 FT)
 HV8271'NNW FROM A LAMP POST, AND 21.4 M (70.2 FT) EAST FROM THE WEST BARRIER
 HV8271'WHERE THE BRIDGE DATE IS SET.
 HV8271
 HV8271                          STATION RECOVERY (2006)
 HV8271
 HV8271'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV8271'3.5 FEET NORTH FROM EXPANSION JOINT AT END OF BRIDGE, 3.5 FEET HIGHER
 HV8271'THAN ROAD IN BARRIER WALL.
 HV8271
 HV8271                          STATION RECOVERY (2007)
 HV8271
 HV8271'RECOVERY NOTE BY US POWER SQUADRON 2007
 HV8271'RECOVERED IN GOOD CONDITION.
 HV8271
 HV8271                          STATION RECOVERY (2008)
 HV8271
 HV8271'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 HV8271'MARK HAS BEEN PAINTED OVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2133 ***********************************************************************
 HU2133  DESIGNATION -  B 171
 HU2133  PID         -  HU2133
 HU2133  STATE/COUNTY-  MD/WICOMICO
 HU2133  COUNTRY     -  US
 HU2133  USGS QUAD   -  SHARPTOWN (2016)
 HU2133
 HU2133                         *CURRENT SURVEY CONTROL
 HU2133  ______________________________________________________________________
 HU2133* NAD 83(1986) POSITION- 38 31 26.6    (N) 075 44 03.8    (W)   HD_HELD2
 HU2133* NAVD 88 ORTHO HEIGHT -     2.337 (meters)        7.67  (feet) ADJUSTED
 HU2133  ______________________________________________________________________
 HU2133  GEOID HEIGHT    -        -35.556 (meters)                     GEOID18
 HU2133  DYNAMIC HEIGHT  -          2.335 (meters)        7.66  (feet) COMP
 HU2133  MODELED GRAVITY -    980,012.2   (mgal)                       NAVD 88
 HU2133
 HU2133  VERT ORDER      -  SECOND    CLASS I
 HU2133
 HU2133.The horizontal coordinates were established by autonomous hand held GPS
 HU2133.observations and have an estimated accuracy of +/- 10 meters.
 HU2133
 HU2133.The orthometric height was determined by differential leveling and
 HU2133.adjusted by the NATIONAL GEODETIC SURVEY
 HU2133.in June 1991.
 HU2133
 HU2133.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2133.GEOID18 height accuracy estimate available here.
 HU2133
 HU2133.Click photographs - Photos may exist for this station.
 HU2133
 HU2133.The dynamic height is computed by dividing the NAVD 88
 HU2133.geopotential number by the normal gravity value computed on the
 HU2133.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2133.degrees latitude (g = 980.6199 gals.).
 HU2133
 HU2133.The modeled gravity was interpolated from observed gravity values.
 HU2133
 HU2133;                    North         East    Units  Estimated Accuracy
 HU2133;SPC MD       -    95,939.      510,359.      MT  (+/- 10 meters HH2 GPS)
 HU2133
 HU2133_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3598364218(NAD 83)
 HU2133
 HU2133                          SUPERSEDED SURVEY CONTROL
 HU2133
 HU2133  NGVD 29 (06/12/91)    2.583  (m)            8.47   (f) ADJUSTED    2 1
 HU2133
 HU2133.Superseded values are not recommended for survey control.
 HU2133
 HU2133.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2133.See file dsdata.pdf to determine how the superseded data were derived.
 HU2133
 HU2133_MARKER: DV = VERTICAL CONTROL DISK
 HU2133_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2133_STAMPING: B 171 1989
 HU2133_MARK LOGO: NGS
 HU2133_PROJECTION: RECESSED 9 CENTIMETERS
 HU2133_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2133+STABILITY: SURFACE MOTION
 HU2133_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2133+SATELLITE: SATELLITE OBSERVATIONS - March 06, 1990
 HU2133
 HU2133  HISTORY     - Date     Condition        Report By
 HU2133  HISTORY     - 1989     MONUMENTED       MDSHA
 HU2133  HISTORY     - 19900306 GOOD             NGS
 HU2133  HISTORY     - 20170329 MARK NOT FOUND   PROFLN
 HU2133  HISTORY     - 20170606 GOOD             ARCSHE
 HU2133
 HU2133                          STATION DESCRIPTION
 HU2133
 HU2133'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2133'2.3 KM (1.43 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 313 FROM THE
 HU2133'JUNCTION OF STATE HIGHWAY 348 IN SHARPTOWN, 64.8 NORTHEAST OF THE
 HU2133'CENTER OF A DRIVEWAY, 13.2 M (43.31 FT) SOUTHEAST OF THE CENTER OF
 HU2133'THE HIGHWAY, 1.0 M (3.28 FT) EAST-SOUTHEAST OF UTILITY POLE NUMBER
 HU2133'43027 98945 WITH 4 GUY WIRES, LEVEL WITH THE HIGHWAY, AND IN A
 HU2133'CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2133
 HU2133                          STATION RECOVERY (2017)
 HU2133
 HU2133'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2133'SEARCHED FOR, NOT FOUND.  A NEW POLE WITH THE SAME NUMBER IS THERE
 HU2133'ALONG WITH A WITNESS POST AND A UTILITY BOX PRETTY MUCH RIGHT WHERE
 HU2133'THE MARK SHOULD BE.
 HU2133
 HU2133                          STATION RECOVERY (2017)
 HU2133
 HU2133'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2133'THE MARK IS ACROSS THE HIGHWAY FROM POLE 43020 98950, AT ABOUT THE
 HU2133'SOUTH END OF A CURVE TO RIGHT SOUTHBOUND, 180 FT (54.9 M) NORTHEAST OF
 HU2133'MAILBOX 11995, 4 FT (1.2 M) EAST-SOUTHEAST OR BEHIND POLE 43027 98945
 HU2133'WHICH LOOKS TO BE A NEW POLE WITH THE SAME NUMBER AS FROM 1989 AND 1
 HU2133'FT (0.3 M) TOWARD THE HIGHWAY FROM A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6172 ***********************************************************************
 JV6172  DESIGNATION -  B 172
 JV6172  PID         -  JV6172
 JV6172  STATE/COUNTY-  MD/HARFORD
 JV6172  COUNTRY     -  US
 JV6172  USGS QUAD   -  PHOENIX (2016)
 JV6172
 JV6172                         *CURRENT SURVEY CONTROL
 JV6172  ______________________________________________________________________
 JV6172* NAD 83(1986) POSITION- 39 34 46.     (N) 076 30 03.     (W)   SCALED
 JV6172* NAVD 88 ORTHO HEIGHT -   192.712 (meters)      632.26  (feet) ADJUSTED
 JV6172  ______________________________________________________________________
 JV6172  GEOID HEIGHT    -        -32.507 (meters)                     GEOID18
 JV6172  DYNAMIC HEIGHT  -        192.614 (meters)      631.93  (feet) COMP
 JV6172  MODELED GRAVITY -    980,110.5   (mgal)                       NAVD 88
 JV6172
 JV6172  VERT ORDER      -  FIRST     CLASS II
 JV6172
 JV6172.The horizontal coordinates were scaled from a map and have
 JV6172.an estimated accuracy of +/- 6 seconds.
 JV6172
 JV6172.The orthometric height was determined by differential leveling and
 JV6172.adjusted by the NATIONAL GEODETIC SURVEY
 JV6172.in June 1991.
 JV6172
 JV6172.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6172.GEOID18 height accuracy estimate available here.
 JV6172
 JV6172.Click photographs - Photos may exist for this station.
 JV6172
 JV6172.The dynamic height is computed by dividing the NAVD 88
 JV6172.geopotential number by the normal gravity value computed on the
 JV6172.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6172.degrees latitude (g = 980.6199 gals.).
 JV6172
 JV6172.The modeled gravity was interpolated from observed gravity values.
 JV6172
 JV6172;                    North         East    Units  Estimated Accuracy
 JV6172;SPC MD       -   212,450.      442,890.      MT  (+/- 180 meters Scaled)
 JV6172
 JV6172_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ711821(NAD 83)
 JV6172
 JV6172                          SUPERSEDED SURVEY CONTROL
 JV6172
 JV6172.No superseded survey control is available for this station.
 JV6172
 JV6172_MARKER: I = METAL ROD
 JV6172_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6172_STAMPING: B 172 1989
 JV6172_MARK LOGO: NGS
 JV6172_PROJECTION: FLUSH
 JV6172_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6172_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6172_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6172+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6172_ROD/PIPE-DEPTH: 6.7 meters
 JV6172
 JV6172  HISTORY     - Date     Condition        Report By
 JV6172  HISTORY     - 1989     MONUMENTED       NGS
 JV6172  HISTORY     - 20020217 MARK NOT FOUND   USPSQD
 JV6172
 JV6172                          STATION DESCRIPTION
 JV6172
 JV6172'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6172'2.5 KM (1.55 MI) SOUTHERLY ALONG STATE HIGHWAY 146 FROM ITS JUNCTION
 JV6172'WITH STATE HIGHWAY 23 IN MADONNA, THENCE 1.5 KM (0.95 MI) SOUTHERLY
 JV6172'ALONG STATE HIGHWAY 152, 28.2 M (92.5 FT) NORTHWEST OF THE SOUTHWEST
 JV6172'CORNER OF A PORCH OF A HOUSE AT 2317 FALLSTON ROAD (STATE HIGHWAY
 JV6172'152), 10.7 M (35.1 FT) SOUTH OF THE CENTERLINE OF FURNACE ROAD, 10.4
 JV6172'M (34.1 FT) EAST OF THE CENTERLINE OF THE HIGHWAY, 0.8 M (2.6 FT)
 JV6172'SOUTH OF A UTILITY POLE AND WITNESS POST, AND LEVEL WITH THE HIGHWAY.
 JV6172'NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP.
 JV6172
 JV6172                          STATION RECOVERY (2002)
 JV6172
 JV6172'RECOVERY NOTE BY US POWER SQUADRON 2002 (RG)
 JV6172'NEW POLE.  NOT FALLSTON ROAD, BUT FURNACE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6199 ***********************************************************************
 JV6199  DESIGNATION -  B 173
 JV6199  PID         -  JV6199
 JV6199  STATE/COUNTY-  MD/HARFORD
 JV6199  COUNTRY     -  US
 JV6199  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6199
 JV6199                         *CURRENT SURVEY CONTROL
 JV6199  ______________________________________________________________________
 JV6199* NAD 83(1986) POSITION- 39 35 06.     (N) 076 23 16.     (W)   SCALED
 JV6199* NAVD 88 ORTHO HEIGHT -   167.320 (meters)      548.95  (feet) ADJUSTED
 JV6199  ______________________________________________________________________
 JV6199  GEOID HEIGHT    -        -32.659 (meters)                     GEOID18
 JV6199  DYNAMIC HEIGHT  -        167.234 (meters)      548.67  (feet) COMP
 JV6199  MODELED GRAVITY -    980,113.2   (mgal)                       NAVD 88
 JV6199
 JV6199  VERT ORDER      -  FIRST     CLASS II
 JV6199
 JV6199.The horizontal coordinates were scaled from a map and have
 JV6199.an estimated accuracy of +/- 6 seconds.
 JV6199
 JV6199.The orthometric height was determined by differential leveling and
 JV6199.adjusted by the NATIONAL GEODETIC SURVEY
 JV6199.in June 1991.
 JV6199
 JV6199.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6199.GEOID18 height accuracy estimate available here.
 JV6199
 JV6199.Click photographs - Photos may exist for this station.
 JV6199
 JV6199.The dynamic height is computed by dividing the NAVD 88
 JV6199.geopotential number by the normal gravity value computed on the
 JV6199.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6199.degrees latitude (g = 980.6199 gals.).
 JV6199
 JV6199.The modeled gravity was interpolated from observed gravity values.
 JV6199
 JV6199;                    North         East    Units  Estimated Accuracy
 JV6199;SPC MD       -   213,130.      452,600.      MT  (+/- 180 meters Scaled)
 JV6199
 JV6199_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ808826(NAD 83)
 JV6199
 JV6199                          SUPERSEDED SURVEY CONTROL
 JV6199
 JV6199.No superseded survey control is available for this station.
 JV6199
 JV6199_MARKER: I = METAL ROD
 JV6199_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6199_STAMPING: B 173 1989
 JV6199_MARK LOGO: NGS
 JV6199_PROJECTION: FLUSH
 JV6199_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6199_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6199_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6199+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6199_ROD/PIPE-DEPTH: 5.5 meters
 JV6199
 JV6199  HISTORY     - Date     Condition        Report By
 JV6199  HISTORY     - 1989     MONUMENTED       NGS
 JV6199
 JV6199                          STATION DESCRIPTION
 JV6199
 JV6199'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6199'IN JARRETTSVILLE, AT THE INTERSECTION OF STATE HIGHWAY 24 AND
 JV6199'JARRETTSVILLE ROAD, 32.6 M (107.0 FT) NORTH OF THE CENTERLINE OF
 JV6199'JARRETTSVILLE ROAD, 9.0 M (29.5 FT) WEST OF THE CENTERLINE OF THE
 JV6199'HIGHWAY, 4.7 M (15.4 FT) SOUTH OF THE CENTER OF A DRIVEWAY, 0.5 M
 JV6199'(1.6 FT) NORTH OF A WITNESS POST AND UTILITY POLE NUMBER 50170, AND
 JV6199'LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 JV6199'5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6182 ***********************************************************************
 JV6182  DESIGNATION -  B 174
 JV6182  PID         -  JV6182
 JV6182  STATE/COUNTY-  MD/HARFORD
 JV6182  COUNTRY     -  US
 JV6182  USGS QUAD   -  FAWN GROVE (2019)
 JV6182
 JV6182                         *CURRENT SURVEY CONTROL
 JV6182  ______________________________________________________________________
 JV6182* NAD 83(1986) POSITION- 39 42 05.2    (N) 076 29 10.9    (W)   HD_HELD2
 JV6182* NAVD 88 ORTHO HEIGHT -   208.378 (meters)      683.65  (feet) ADJUSTED
 JV6182  ______________________________________________________________________
 JV6182  GEOID HEIGHT    -        -32.541 (meters)                     GEOID18
 JV6182  DYNAMIC HEIGHT  -        208.274 (meters)      683.31  (feet) COMP
 JV6182  MODELED GRAVITY -    980,119.6   (mgal)                       NAVD 88
 JV6182
 JV6182  VERT ORDER      -  FIRST     CLASS II
 JV6182
 JV6182.The horizontal coordinates were established by autonomous hand held GPS
 JV6182.observations and have an estimated accuracy of +/- 10 meters.
 JV6182
 JV6182.The orthometric height was determined by differential leveling and
 JV6182.adjusted by the NATIONAL GEODETIC SURVEY
 JV6182.in June 1991.
 JV6182
 JV6182.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6182.GEOID18 height accuracy estimate available here.
 JV6182
 JV6182.Click photographs - Photos may exist for this station.
 JV6182
 JV6182.The dynamic height is computed by dividing the NAVD 88
 JV6182.geopotential number by the normal gravity value computed on the
 JV6182.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6182.degrees latitude (g = 980.6199 gals.).
 JV6182
 JV6182.The modeled gravity was interpolated from observed gravity values.
 JV6182
 JV6182;                    North         East    Units  Estimated Accuracy
 JV6182;SPC MD       -   226,005.      444,054.      MT  (+/- 10 meters HH2 GPS)
 JV6182
 JV6182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7257195677(NAD 83)
 JV6182
 JV6182                          SUPERSEDED SURVEY CONTROL
 JV6182
 JV6182.No superseded survey control is available for this station.
 JV6182
 JV6182_MARKER: I = METAL ROD
 JV6182_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6182_STAMPING: B 174 1989
 JV6182_MARK LOGO: NGS
 JV6182_PROJECTION: FLUSH
 JV6182_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6182_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6182_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6182+SATELLITE: SATELLITE OBSERVATIONS - November 03, 2004
 JV6182_ROD/PIPE-DEPTH: 3.7 meters
 JV6182
 JV6182  HISTORY     - Date     Condition        Report By
 JV6182  HISTORY     - 1989     MONUMENTED       NGS
 JV6182  HISTORY     - 20041103 GOOD             GEOCAC
 JV6182
 JV6182                          STATION DESCRIPTION
 JV6182
 JV6182'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6182'3.4 KM (2.10 MI) SOUTHERLY ALONG STATE HIGHWAY 124 AND STATE HIGHWAY
 JV6182'163 FROM THE JUNCTION OF STATE HIGHWAY 851 IN FAWN GROVE,
 JV6182'PENNSYLVANIA, THENCE 3.1 KM (1.95 MI) WESTERLY ALONG STATE HIGHWAY
 JV6182'136, 12.0 M (39.4 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF THE
 JV6182'CITIZENS VOLUNTEER FIRE COMPANY, 9.2 M (30.2 FT) EAST OF THE CENTER
 JV6182'OF THE MOST EASTERLY ENTRANCE, 5.9 M (19.4 FT) NORTH OF THE
 JV6182'CENTERLINE OF THE HIGHWAY, 0.5 M (1.6 FT) EAST OF A WITNESS POST AND
 JV6182'UTILITY POLE NUMBER 92, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO
 JV6182'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6182
 JV6182                          STATION RECOVERY (2004)
 JV6182
 JV6182'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6182'THE PREVIOUSLY DESCRIBED FACILITY IS NOW THE NORRISVILLE VOLUNTEER
 JV6182'FIRE DEPARTMENT.  THE STATION IS ABOUT 63 FEET SOUTH-SOUTHEAST OF THE
 JV6182'SOUTHEAST CORNER OF THE NEW BUILDING, ABOUT THREE FEET SOUTH-SOUTHEAST
 JV6182'FROM THE SOUTHEAST CORNER OF A BRICK SIGN BASE, 1.6 FEET
 JV6182'EAST OF AN ORANGE CARSONITE WITNESS POST AND UTILITY POLE NUMBER
 JV6182'92-213249, AND COVERED BY A CREEPING ORNAMENTAL SHRUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2419 ***********************************************************************
 HU2419  DESIGNATION -  B 175
 HU2419  PID         -  HU2419
 HU2419  STATE/COUNTY-  MD/WICOMICO
 HU2419  COUNTRY     -  US
 HU2419  USGS QUAD   -  WANGO (2016)
 HU2419
 HU2419                         *CURRENT SURVEY CONTROL
 HU2419  ______________________________________________________________________
 HU2419* NAD 83(1986) POSITION- 38 21 41.     (N) 075 27 46.     (W)   SCALED
 HU2419* NAVD 88 ORTHO HEIGHT -    16.738 (meters)       54.91  (feet) ADJUSTED
 HU2419  ______________________________________________________________________
 HU2419  GEOID HEIGHT    -        -35.910 (meters)                     GEOID18
 HU2419  DYNAMIC HEIGHT  -         16.728 (meters)       54.88  (feet) COMP
 HU2419  MODELED GRAVITY -    980,004.6   (mgal)                       NAVD 88
 HU2419
 HU2419  VERT ORDER      -  SECOND    CLASS I
 HU2419
 HU2419.The horizontal coordinates were scaled from a map and have
 HU2419.an estimated accuracy of +/- 6 seconds.
 HU2419
 HU2419.The orthometric height was determined by differential leveling and
 HU2419.adjusted by the NATIONAL GEODETIC SURVEY
 HU2419.in June 1991.
 HU2419
 HU2419.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2419.GEOID18 height accuracy estimate available here.
 HU2419
 HU2419.Click photographs - Photos may exist for this station.
 HU2419
 HU2419.The dynamic height is computed by dividing the NAVD 88
 HU2419.geopotential number by the normal gravity value computed on the
 HU2419.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2419.degrees latitude (g = 980.6199 gals.).
 HU2419
 HU2419.The modeled gravity was interpolated from observed gravity values.
 HU2419
 HU2419;                    North         East    Units  Estimated Accuracy
 HU2419;SPC MD       -    78,250.      534,350.      MT  (+/- 180 meters Scaled)
 HU2419
 HU2419_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH595460(NAD 83)
 HU2419
 HU2419                          SUPERSEDED SURVEY CONTROL
 HU2419
 HU2419  NGVD 29 (06/12/91)   16.983  (m)           55.72   (f) ADJUSTED    2 1
 HU2419
 HU2419.Superseded values are not recommended for survey control.
 HU2419
 HU2419.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2419.See file dsdata.pdf to determine how the superseded data were derived.
 HU2419
 HU2419_MARKER: I = METAL ROD
 HU2419_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2419_STAMPING: B 175 1990
 HU2419_MARK LOGO: NGS
 HU2419_PROJECTION: RECESSED 1 CENTIMETERS
 HU2419_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2419_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2419_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2419+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2419_ROD/PIPE-DEPTH: 10.9 meters
 HU2419_SLEEVE-DEPTH  : 0.9 meters
 HU2419
 HU2419  HISTORY     - Date     Condition        Report By
 HU2419  HISTORY     - 1990     MONUMENTED       NGS
 HU2419
 HU2419                          STATION DESCRIPTION
 HU2419
 HU2419'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2419'3.2 KM (1.99 MI) SOUTHERLY ALONG FOREST GROVE ROAD FROM THE JUNCTION
 HU2419'OF STATE HIGHWAY 346 (OCEAN CITY ROAD) IN PARSONSBURG, 47.1 M
 HU2419'(154.53 FT) WEST OF THE NORTHWEST CORNER OF A HOUSE, 33.7 M
 HU2419'(110.56 FT) NORTH OF THE CENTER OF A DRIVEWAY, AND 10.0 M (32.81 FT)
 HU2419'EAST OF AND LEVEL WITH THE ROAD CENTER.  NOTE--ACCESS TO THE DATUM
 HU2419'POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY
 HU2419'OWNED BY CHARLES J. TAYLOR, RT 1 BOX 181 A, FOREST GROVE ROAD,
 HU2419'PARSONSBURG, MD 21849, TELEPHONE NUMBER (301) 749-5912.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2310 ***********************************************************************
 HU2310  DESIGNATION -  B 176
 HU2310  PID         -  HU2310
 HU2310  STATE/COUNTY-  MD/WICOMICO
 HU2310  COUNTRY     -  US
 HU2310  USGS QUAD   -  HEBRON (2016)
 HU2310
 HU2310                         *CURRENT SURVEY CONTROL
 HU2310  ______________________________________________________________________
 HU2310* NAD 83(1986) POSITION- 38 25 28.     (N) 075 37 46.     (W)   SCALED
 HU2310* NAVD 88 ORTHO HEIGHT -    14.294 (meters)       46.90  (feet) ADJUSTED
 HU2310  ______________________________________________________________________
 HU2310  GEOID HEIGHT    -        -35.725 (meters)                     GEOID18
 HU2310  DYNAMIC HEIGHT  -         14.285 (meters)       46.87  (feet) COMP
 HU2310  MODELED GRAVITY -    980,010.8   (mgal)                       NAVD 88
 HU2310
 HU2310  VERT ORDER      -  SECOND    CLASS I
 HU2310
 HU2310.The horizontal coordinates were scaled from a map and have
 HU2310.an estimated accuracy of +/- 6 seconds.
 HU2310
 HU2310.The orthometric height was determined by differential leveling and
 HU2310.adjusted by the NATIONAL GEODETIC SURVEY
 HU2310.in June 1991.
 HU2310
 HU2310.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2310.GEOID18 height accuracy estimate available here.
 HU2310
 HU2310.Click photographs - Photos may exist for this station.
 HU2310
 HU2310.The dynamic height is computed by dividing the NAVD 88
 HU2310.geopotential number by the normal gravity value computed on the
 HU2310.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2310.degrees latitude (g = 980.6199 gals.).
 HU2310
 HU2310.The modeled gravity was interpolated from observed gravity values.
 HU2310
 HU2310;                    North         East    Units  Estimated Accuracy
 HU2310;SPC MD       -    85,020.      519,680.      MT  (+/- 180 meters Scaled)
 HU2310
 HU2310_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH450530(NAD 83)
 HU2310
 HU2310                          SUPERSEDED SURVEY CONTROL
 HU2310
 HU2310  NGVD 29 (06/12/91)   14.542  (m)           47.71   (f) ADJUSTED    2 1
 HU2310
 HU2310.Superseded values are not recommended for survey control.
 HU2310
 HU2310.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2310.See file dsdata.pdf to determine how the superseded data were derived.
 HU2310
 HU2310_MARKER: I = METAL ROD
 HU2310_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2310_STAMPING: B 176 1990
 HU2310_MARK LOGO: NGS
 HU2310_PROJECTION: RECESSED 2 CENTIMETERS
 HU2310_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2310_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2310_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2310+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2310_ROD/PIPE-DEPTH: 30.4 meters
 HU2310_SLEEVE-DEPTH  : 0.9 meters
 HU2310
 HU2310  HISTORY     - Date     Condition        Report By
 HU2310  HISTORY     - 1990     MONUMENTED       NGS
 HU2310
 HU2310                          STATION DESCRIPTION
 HU2310
 HU2310'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2310'0.2 KM (0.12 MI) WESTERLY ALONG NAYLOR MILL ROAD FROM THE JUNCTION OF
 HU2310'JERSEY ROAD IN SALISBURY, THENCE 2.8 KM (1.74 MI) NORTHWESTERLY ALONG
 HU2310'LOG CABIN ROAD, 0.2 KM (0.12 MI) NORTHWEST OF THE INTERSECTION OF
 HU2310'WEST ROAD, 27.9 M (91.54 FT) NORTH OF THE NORTH CORNER OF A HOUSE,
 HU2310'14.3 M (46.92 FT) NORTHWEST OF THE CENTER OF A DRIVEWAY, 10.7 M
 HU2310'(35.10 FT) SOUTHWEST OF THE CENTER OF THE ROAD, 3.2 M (10.50 FT)
 HU2310'SOUTHEAST OF UTILITY POLE NUMBER 702 56, AND LEVEL WITH THE ROAD.
 HU2310'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE
 HU2310'MONUMENT IS ON PROPERTY OWNED BY MARJIE MALONE, RT 10 BOX 24, LOG
 HU2310'CABIN ROAD, SALISBURY, MD 21801, TELEPHONE NUMBER (301) 749-5870.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6217 ***********************************************************************
 JV6217  DESIGNATION -  B 177
 JV6217  PID         -  JV6217
 JV6217  STATE/COUNTY-  MD/HARFORD
 JV6217  COUNTRY     -  US
 JV6217  USGS QUAD   -  DELTA (2019)
 JV6217
 JV6217                         *CURRENT SURVEY CONTROL
 JV6217  ______________________________________________________________________
 JV6217* NAD 83(1986) POSITION- 39 37 51.     (N) 076 16 29.     (W)   SCALED
 JV6217* NAVD 88 ORTHO HEIGHT -   131.017 (meters)      429.84  (feet) ADJUSTED
 JV6217  ______________________________________________________________________
 JV6217  GEOID HEIGHT    -        -32.787 (meters)                     GEOID18
 JV6217  DYNAMIC HEIGHT  -        130.953 (meters)      429.64  (feet) COMP
 JV6217  MODELED GRAVITY -    980,130.1   (mgal)                       NAVD 88
 JV6217
 JV6217  VERT ORDER      -  FIRST     CLASS II
 JV6217
 JV6217.The horizontal coordinates were scaled from a map and have
 JV6217.an estimated accuracy of +/- 6 seconds.
 JV6217
 JV6217.The orthometric height was determined by differential leveling and
 JV6217.adjusted by the NATIONAL GEODETIC SURVEY
 JV6217.in June 1991.
 JV6217
 JV6217.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6217.GEOID18 height accuracy estimate available here.
 JV6217
 JV6217.Click photographs - Photos may exist for this station.
 JV6217
 JV6217.The dynamic height is computed by dividing the NAVD 88
 JV6217.geopotential number by the normal gravity value computed on the
 JV6217.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6217.degrees latitude (g = 980.6199 gals.).
 JV6217
 JV6217.The modeled gravity was interpolated from observed gravity values.
 JV6217
 JV6217;                    North         East    Units  Estimated Accuracy
 JV6217;SPC MD       -   218,290.      462,270.      MT  (+/- 180 meters Scaled)
 JV6217
 JV6217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ906875(NAD 83)
 JV6217
 JV6217                          SUPERSEDED SURVEY CONTROL
 JV6217
 JV6217.No superseded survey control is available for this station.
 JV6217
 JV6217_MARKER: I = METAL ROD
 JV6217_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6217_STAMPING: B 177 1989
 JV6217_MARK LOGO: NGS
 JV6217_PROJECTION: FLUSH
 JV6217_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6217_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6217_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6217+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6217_ROD/PIPE-DEPTH: 12.0 meters
 JV6217
 JV6217  HISTORY     - Date     Condition        Report By
 JV6217  HISTORY     - 1989     MONUMENTED       NGS
 JV6217  HISTORY     - 19980711 GOOD             USPSQD
 JV6217
 JV6217                          STATION DESCRIPTION
 JV6217
 JV6217'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6217'1.6 KM (1.00 MI) SOUTHERLY ALONG STATE HIGHWAY 136 FROM THE JUNCTION
 JV6217'OF STATE HIGHWAY 440 IN DUBLIN, THENCE 0.9 KM (0.55 MI) SOUTHWESTERLY
 JV6217'ALONG U.S. HIGHWAY 1, 30.7 M (100.7 FT) WEST OF THE CENTERLINE OF
 JV6217'FORGE HILL ROAD, 24.9 KM (15.45 MI) NORTHEAST OF THE NORTHEAST CORNER
 JV6217'OF A MOBILE HOME, 9.3 M (30.5 FT) SOUTHEAST OF THE CENTERLINE OF THE
 JV6217'HIGHWAY, 0.6 M (2.0 FT) SOUTHEAST OF A WITNESS POST AND UTILITY POLE
 JV6217'NUMBER 1, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO THE DATUM
 JV6217'POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6217
 JV6217                          STATION RECOVERY (1998)
 JV6217
 JV6217'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6217'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2490 ***********************************************************************
 HU2490  DESIGNATION -  B 178
 HU2490  PID         -  HU2490
 HU2490  STATE/COUNTY-  MD/WICOMICO
 HU2490  COUNTRY     -  US
 HU2490  USGS QUAD   -  EDEN (2016)
 HU2490
 HU2490                         *CURRENT SURVEY CONTROL
 HU2490  ______________________________________________________________________
 HU2490* NAD 83(1986) POSITION- 38 20 02.     (N) 075 40 29.     (W)   SCALED
 HU2490* NAVD 88 ORTHO HEIGHT -     3.780 (meters)       12.40  (feet) ADJUSTED
 HU2490  ______________________________________________________________________
 HU2490  GEOID HEIGHT    -        -35.819 (meters)                     GEOID18
 HU2490  DYNAMIC HEIGHT  -          3.777 (meters)       12.39  (feet) COMP
 HU2490  MODELED GRAVITY -    980,002.3   (mgal)                       NAVD 88
 HU2490
 HU2490  VERT ORDER      -  SECOND    CLASS I
 HU2490
 HU2490.The horizontal coordinates were scaled from a map and have
 HU2490.an estimated accuracy of +/- 6 seconds.
 HU2490
 HU2490.The orthometric height was determined by differential leveling and
 HU2490.adjusted by the NATIONAL GEODETIC SURVEY
 HU2490.in June 1991.
 HU2490
 HU2490.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2490.GEOID18 height accuracy estimate available here.
 HU2490
 HU2490.Click photographs - Photos may exist for this station.
 HU2490
 HU2490.The dynamic height is computed by dividing the NAVD 88
 HU2490.geopotential number by the normal gravity value computed on the
 HU2490.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2490.degrees latitude (g = 980.6199 gals.).
 HU2490
 HU2490.The modeled gravity was interpolated from observed gravity values.
 HU2490
 HU2490;                    North         East    Units  Estimated Accuracy
 HU2490;SPC MD       -    74,910.      515,870.      MT  (+/- 180 meters Scaled)
 HU2490
 HU2490_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH410430(NAD 83)
 HU2490
 HU2490                          SUPERSEDED SURVEY CONTROL
 HU2490
 HU2490  NGVD 29 (06/12/91)    4.035  (m)           13.24   (f) ADJUSTED    2 1
 HU2490
 HU2490.Superseded values are not recommended for survey control.
 HU2490
 HU2490.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2490.See file dsdata.pdf to determine how the superseded data were derived.
 HU2490
 HU2490_MARKER: I = METAL ROD
 HU2490_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2490_STAMPING: B 178 1990
 HU2490_MARK LOGO: NGS
 HU2490_PROJECTION: RECESSED 2 CENTIMETERS
 HU2490_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2490_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2490_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2490+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2490_ROD/PIPE-DEPTH: 17.0 meters
 HU2490_SLEEVE-DEPTH  : 0.9 meters
 HU2490
 HU2490  HISTORY     - Date     Condition        Report By
 HU2490  HISTORY     - 1990     MONUMENTED       NGS
 HU2490
 HU2490                          STATION DESCRIPTION
 HU2490
 HU2490'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2490'2.1 KM (1.30 MI) NORTHWESTERLY ALONG SHARPS POINT ROAD FROM THE
 HU2490'JUNCTION OF CAMDEN AVENUE IN FRUITLAND, THENCE 2.8 KM (1.74 MI)
 HU2490'WESTERLY ALONG RIVERSIDE DRIVE, 23.8 M (78.08 FT) SOUTHWEST OF THE
 HU2490'SOUTHWEST CORNER OF A HOUSE, 8.5 M (27.89 FT) SOUTHEAST OF THE CENTER
 HU2490'OF A DRIVEWAY, AND 6.5 M (21.33 FT) NORTHEAST OF AND LEVEL WITH THE
 HU2490'ROAD CENTERLINE,  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 HU2490'LOGO CAP.  THE MONUMENT IS PROPERTY OWNED BY PRESTON JONES, RT 1 BOX
 HU2490'206 RIVERSIDE DRIVE, SALISBURY, MD 21801, TELEPHONE NUMBER (301)
 HU2490'742-8930.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2222 ***********************************************************************
 HU2222  DESIGNATION -  B 179
 HU2222  PID         -  HU2222
 HU2222  STATE/COUNTY-  MD/WICOMICO
 HU2222  COUNTRY     -  US
 HU2222  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2222
 HU2222                         *CURRENT SURVEY CONTROL
 HU2222  ______________________________________________________________________
 HU2222* NAD 83(1986) POSITION- 38 25 19.4    (N) 075 45 12.8    (W)   HD_HELD2
 HU2222* NAVD 88 ORTHO HEIGHT -     6.305 (meters)       20.69  (feet) ADJUSTED
 HU2222  ______________________________________________________________________
 HU2222  GEOID HEIGHT    -        -35.626 (meters)                     GEOID18
 HU2222  DYNAMIC HEIGHT  -          6.301 (meters)       20.67  (feet) COMP
 HU2222  MODELED GRAVITY -    980,012.6   (mgal)                       NAVD 88
 HU2222
 HU2222  VERT ORDER      -  SECOND    CLASS I
 HU2222
 HU2222.The horizontal coordinates were established by autonomous hand held GPS
 HU2222.observations and have an estimated accuracy of +/- 10 meters.
 HU2222
 HU2222.The orthometric height was determined by differential leveling and
 HU2222.adjusted by the NATIONAL GEODETIC SURVEY
 HU2222.in June 1991.
 HU2222
 HU2222.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2222.GEOID18 height accuracy estimate available here.
 HU2222
 HU2222.Click photographs - Photos may exist for this station.
 HU2222
 HU2222.The dynamic height is computed by dividing the NAVD 88
 HU2222.geopotential number by the normal gravity value computed on the
 HU2222.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2222.degrees latitude (g = 980.6199 gals.).
 HU2222
 HU2222.The modeled gravity was interpolated from observed gravity values.
 HU2222
 HU2222;                    North         East    Units  Estimated Accuracy
 HU2222;SPC MD       -    84,594.      508,842.      MT  (+/- 10 meters HH2 GPS)
 HU2222
 HU2222_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3422052913(NAD 83)
 HU2222
 HU2222                          SUPERSEDED SURVEY CONTROL
 HU2222
 HU2222  NGVD 29 (06/12/91)    6.552  (m)           21.50   (f) ADJUSTED    2 1
 HU2222
 HU2222.Superseded values are not recommended for survey control.
 HU2222
 HU2222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2222.See file dsdata.pdf to determine how the superseded data were derived.
 HU2222
 HU2222_MARKER: F = FLANGE-ENCASED ROD
 HU2222_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2222_STAMPING: B 179 1990
 HU2222_MARK LOGO: NGS
 HU2222_PROJECTION: RECESSED 7 CENTIMETERS
 HU2222_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2222_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2222_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2222+SATELLITE: SATELLITE OBSERVATIONS - June 07, 2017
 HU2222_ROD/PIPE-DEPTH: 12.1 meters
 HU2222_SLEEVE-DEPTH  : 0.9 meters
 HU2222
 HU2222  HISTORY     - Date     Condition        Report By
 HU2222  HISTORY     - 1990     MONUMENTED       NGS
 HU2222  HISTORY     - 20170607 GOOD             ARCSHE
 HU2222
 HU2222                          STATION DESCRIPTION
 HU2222
 HU2222'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2222'0.9 KM (0.56 MI) SOUTHEASTERLY ALONG BRIDGE STREET FROM THE POST
 HU2222'OFFICE IN MARDELA SPRINGS, THENCE 0.5 KM (0.31 MI) SOUTHWESTERLY
 HU2222'ALONG ATHOL ROAD, THENCE 2.8 KM (1.74 MI) SOUTHEASTERLY ALONG MILL
 HU2222'BRANCH ROAD, THENCE 1.6 KM (0.99 MI) SOUTHWESTERLY ALONG RIGGIN ROAD,
 HU2222'THENCE 0.3 KM (0.19 MI) SOUTHWESTERLY ALONG PORTER MILL ROAD, 54.0 M
 HU2222'(177.16 FT) SOUTH OF THE SOUTHWEST CORNER OF A HOUSE, 8.0 M (26.25
 HU2222'FT) NORTH OF THE CENTER OF THE ROAD, 5.8 M (19.03 FT) WEST OF THE
 HU2222'CENTER OF A DRIVEWAY, 4.8 M (15.75 FT) EAST OF UTILITY POLE NUMBER YS
 HU2222'36, 0.9 M (2.95 FT) SOUTH OF A WITNESS POST, AND 0.3 M (0.98 FT)
 HU2222'ABOVE THE LEVEL OF THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS
 HU2222'THROUGH A 5-INCH LOGO CAP.  THE MARK IS ON PROPERTY OWNED BY MR.
 HU2222'DAVID KENNEY, RT 1 BOX 160C, HEBRON, MD 21830, TELEPHONE NUMBER (301)
 HU2222'546-4672.
 HU2222
 HU2222                          STATION RECOVERY (2017)
 HU2222
 HU2222'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2222'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1536 ***********************************************************************
 HV1536  DESIGNATION -  B 18
 HV1536  PID         -  HV1536
 HV1536  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1536  COUNTRY     -  US
 HV1536  USGS QUAD   -  SOUTH RIVER (2016)
 HV1536
 HV1536                         *CURRENT SURVEY CONTROL
 HV1536  ______________________________________________________________________
 HV1536* NAD 83(1986) POSITION- 38 58 47.     (N) 076 32 09.     (W)   SCALED
 HV1536* NAVD 88 ORTHO HEIGHT -    23.821 (meters)       78.15  (feet) ADJUSTED
 HV1536  ______________________________________________________________________
 HV1536  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 HV1536  DYNAMIC HEIGHT  -         23.807 (meters)       78.11  (feet) COMP
 HV1536  MODELED GRAVITY -    980,070.5   (mgal)                       NAVD 88
 HV1536
 HV1536  VERT ORDER      -  FIRST     CLASS I
 HV1536
 HV1536.The horizontal coordinates were scaled from a map and have
 HV1536.an estimated accuracy of +/- 6 seconds.
 HV1536
 HV1536.The orthometric height was determined by differential leveling and
 HV1536.adjusted by the NATIONAL GEODETIC SURVEY
 HV1536.in June 1991.
 HV1536
 HV1536.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1536.GEOID18 height accuracy estimate available here.
 HV1536
 HV1536.Click photographs - Photos may exist for this station.
 HV1536
 HV1536.The dynamic height is computed by dividing the NAVD 88
 HV1536.geopotential number by the normal gravity value computed on the
 HV1536.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1536.degrees latitude (g = 980.6199 gals.).
 HV1536
 HV1536.The modeled gravity was interpolated from observed gravity values.
 HV1536
 HV1536;                    North         East    Units  Estimated Accuracy
 HV1536;SPC MD       -   145,860.      440,220.      MT  (+/- 180 meters Scaled)
 HV1536
 HV1536_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ669156(NAD 83)
 HV1536
 HV1536                          SUPERSEDED SURVEY CONTROL
 HV1536
 HV1536  NGVD 29 (11/26/84)   24.062  (m)           78.94   (f) ADJUSTED    1 1
 HV1536
 HV1536.Superseded values are not recommended for survey control.
 HV1536
 HV1536.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1536.See file dsdata.pdf to determine how the superseded data were derived.
 HV1536
 HV1536_MARKER: DB = BENCH MARK DISK
 HV1536_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1536_STAMPING: B 18 1935
 HV1536_MARK LOGO: CGS
 HV1536_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1536+STABILITY: SURFACE MOTION
 HV1536
 HV1536  HISTORY     - Date     Condition        Report By
 HV1536  HISTORY     - 1935     MONUMENTED       CGS
 HV1536  HISTORY     - 1971     GOOD             NGS
 HV1536
 HV1536                          STATION DESCRIPTION
 HV1536
 HV1536'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1536'0.4 MI SW FROM PAROLE.
 HV1536'ABOUT 0.15 MILE EAST ALONG STATE HIGHWAY 450 (WEST STREET)
 HV1536'FROM THE INTERSECTION OF STATE HIGHWAY 2 AT PAROLE, THENCE 0.2
 HV1536'MILE SOUTHWEST ALONG OLD SOLOMONS ISLAND ROAD (SOUTH RIVER
 HV1536'ROAD), 18 1/2 FEET NORTHWEST OF THE CENTER LINE OF THE ROAD,
 HV1536'226 FEET SOUTHWEST OF THE CENTER LINE OF SOMERVILE STREET, 21 1/2
 HV1536'FEET SOUTHWEST OF THE EXTENDED CENTER LINE OF A DRIVEWAY TO A
 HV1536'1-STORY HOUSE, 57 1/2 FEET NORTHEAST OF POWER POLE NUMBER 477198,
 HV1536'1.6 FEET SOUTHEST OF A METAL WITNESS POST, ABOUT LEVEL WITH THE
 HV1536'ROAD, AND SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 7
 HV1536'INCHES.  NOTE-- THIS MARK IS IN THE CITY LIMITS OF ANNAPOLIS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1537 ***********************************************************************
 HV1537  DESIGNATION -  B 18 RESET
 HV1537  PID         -  HV1537
 HV1537  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1537  COUNTRY     -  US
 HV1537  USGS QUAD   -  SOUTH RIVER (2016)
 HV1537
 HV1537                         *CURRENT SURVEY CONTROL
 HV1537  ______________________________________________________________________
 HV1537* NAD 83(1986) POSITION- 38 58 47.0    (N) 076 32 08.6    (W)   HD_HELD2
 HV1537* NAVD 88 ORTHO HEIGHT -    23.61  (+/-2cm)       77.5   (feet) VERTCON3
 HV1537  ______________________________________________________________________
 HV1537  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 HV1537  VERT ORDER      -  THIRD (See Below)
 HV1537
 HV1537.The horizontal coordinates were established by autonomous hand held GPS
 HV1537.observations and have an estimated accuracy of +/- 10 meters.
 HV1537
 HV1537.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1537.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1537
 HV1537.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1537.GEOID18 height accuracy estimate available here.
 HV1537
 HV1537.The vertical order pertains to the NGVD 29 superseded value.
 HV1537
 HV1537.Click photographs - Photos may exist for this station.
 HV1537
 HV1537;                    North         East    Units  Estimated Accuracy
 HV1537;SPC MD       -   145,857.      440,228.      MT  (+/- 10 meters HH2 GPS)
 HV1537
 HV1537_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6697715647(NAD 83)
 HV1537
 HV1537                          SUPERSEDED SURVEY CONTROL
 HV1537
 HV1537  NGVD 29 (??/??/??)   23.85   (m)           78.2    (f) RESET       3  
 HV1537
 HV1537.Superseded values are not recommended for survey control.
 HV1537
 HV1537.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1537.See file dsdata.pdf to determine how the superseded data were derived.
 HV1537
 HV1537_MARKER: DV = VERTICAL CONTROL DISK
 HV1537_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1537_SP_SET: ROAD CURB
 HV1537_STAMPING: B 18 RESET 1974
 HV1537_MARK LOGO: NGS
 HV1537_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1537_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV1537+SATELLITE: SATELLITE OBSERVATIONS - April 27, 2012
 HV1537
 HV1537  HISTORY     - Date     Condition        Report By
 HV1537  HISTORY     - 1974     MONUMENTED       NGS
 HV1537  HISTORY     - 20050925 GOOD             GEOCAC
 HV1537  HISTORY     - 20120427 GOOD             NGS
 HV1537
 HV1537                          STATION DESCRIPTION
 HV1537
 HV1537'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
 HV1537'IN ANNAPOLIS.
 HV1537'LOCATED ABOUT 1 MILE NORTHWEST OF THE CENTER OF ANNAPOLIS AND
 HV1537'JUST SOUTH OF A NEWLY CONSTRUCTED SHOPPING CENTER.  TO REACH
 HV1537'FROM THE INTERSECTION OF STATE HIGHWAYS 450 AND 2 IN THE
 HV1537'NORTHWEST PART OF ANNAPOLIS, GO WEST ON STATE HIGHWAY 2 FOR
 HV1537'0.3 MILE TO A CROSSROADS.  TURN LEFT AND GO SOUTH ON FOREST
 HV1537'DRIVE FOR 0.1 MILE TO A CROSSROADS.  TURN LEFT AND GO EAST ON
 HV1537'SOLOMON ROAD FOR 0.15 MILE TO THE MARK ON THE LEFT.  THE MARK
 HV1537'IS A STANDARD DISK STAMPED B 18 RESET 1974, CEMENTED IN A DRILL
 HV1537'HOLE IN THE NORTH CURB ALONG SOLOMON ROAD.  IT IS 56 FEET
 HV1537'NORTHEAST OF A POWERLINE POLE NUMBERED 27704, 24 FEET NORTH OF
 HV1537'THE CENTER OF SOLOMON ROAD, 8.5 FEET SOUTHWEST OF A POWERLINE
 HV1537'POLE NUMBERED 477198, 7 FEET SOUTH OF THE SOUTH FENCE AROUND
 HV1537'THE SHOPPING CENTER AND 0.5 FOOT NORTH OF THE SOUTH EDGE OF THE
 HV1537'CURB.  THE ELEVATION OF THIS MARK WAS DETERMINED BY LEVELING
 HV1537'FROM BENCH MARK B 18 TO TBMS AND THEN TO THIS MARKER.  BENCH
 HV1537'MARK B 18 WAS DESTROYED IN THE SUMMER OF 1974 AFTER THE TBMS
 HV1537'WERE ESTABLISHED.
 HV1537
 HV1537                          STATION RECOVERY (2005)
 HV1537
 HV1537'RECOVERY NOTE BY GEOCACHING 2005 (LWB)
 HV1537'RECOVERED IN GOOD CONDITION.  SOLOMON ROAD IS NOW OLD SOLOMON ROAD,
 HV1537'WITH THE FORMER NOW RELOCATED TO THE NORTH WEST.  MARK IS ACROSS THE
 HV1537'STREET FROM 37 OLD SOLOMON ROAD.
 HV1537
 HV1537                          STATION RECOVERY (2012)
 HV1537
 HV1537'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRA)
 HV1537'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2164 ***********************************************************************
 HU2164  DESIGNATION -  B 180
 HU2164  PID         -  HU2164
 HU2164  STATE/COUNTY-  MD/WICOMICO
 HU2164  COUNTRY     -  US
 HU2164  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2164
 HU2164                         *CURRENT SURVEY CONTROL
 HU2164  ______________________________________________________________________
 HU2164* NAD 83(1986) POSITION- 38 22 52.0    (N) 075 47 24.0    (W)   HD_HELD2
 HU2164* NAVD 88 ORTHO HEIGHT -     1.307 (meters)        4.29  (feet) ADJUSTED
 HU2164  ______________________________________________________________________
 HU2164  GEOID HEIGHT    -        -35.654 (meters)                     GEOID18
 HU2164  DYNAMIC HEIGHT  -          1.306 (meters)        4.28  (feet) COMP
 HU2164  MODELED GRAVITY -    980,007.3   (mgal)                       NAVD 88
 HU2164
 HU2164  VERT ORDER      -  SECOND    CLASS I
 HU2164
 HU2164.The horizontal coordinates were established by autonomous hand held GPS
 HU2164.observations and have an estimated accuracy of +/- 10 meters.
 HU2164
 HU2164.The orthometric height was determined by differential leveling and
 HU2164.adjusted by the NATIONAL GEODETIC SURVEY
 HU2164.in June 1991.
 HU2164
 HU2164.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2164.GEOID18 height accuracy estimate available here.
 HU2164
 HU2164.Click photographs - Photos may exist for this station.
 HU2164
 HU2164.The dynamic height is computed by dividing the NAVD 88
 HU2164.geopotential number by the normal gravity value computed on the
 HU2164.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2164.degrees latitude (g = 980.6199 gals.).
 HU2164
 HU2164.The modeled gravity was interpolated from observed gravity values.
 HU2164
 HU2164;                    North         East    Units  Estimated Accuracy
 HU2164;SPC MD       -    80,007.      505,720.      MT  (+/- 10 meters HH2 GPS)
 HU2164
 HU2164_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3100048396(NAD 83)
 HU2164
 HU2164                          SUPERSEDED SURVEY CONTROL
 HU2164
 HU2164  NGVD 29 (06/12/91)    1.557  (m)            5.11   (f) ADJUSTED    2 1
 HU2164
 HU2164.Superseded values are not recommended for survey control.
 HU2164
 HU2164.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2164.See file dsdata.pdf to determine how the superseded data were derived.
 HU2164
 HU2164_MARKER: F = FLANGE-ENCASED ROD
 HU2164_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2164_STAMPING: B 180 1990
 HU2164_MARK LOGO: NGS
 HU2164_PROJECTION: RECESSED 9 CENTIMETERS
 HU2164_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2164_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2164_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2164+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2018
 HU2164_ROD/PIPE-DEPTH: 11.8 meters
 HU2164_SLEEVE-DEPTH  : 0.9 meters
 HU2164
 HU2164  HISTORY     - Date     Condition        Report By
 HU2164  HISTORY     - 1990     MONUMENTED       NGS
 HU2164  HISTORY     - 20180718 GOOD             PROFLN
 HU2164
 HU2164                          STATION DESCRIPTION
 HU2164
 HU2164'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2164'4.5 KM (2.80 MI) NORTHWESTERLY ALONG CHERRY WALK ROAD FROM THE
 HU2164'JUNCTION OF STATE HIGHWAY 347 IN QUANTICO, 25.1 M (82.35 FT)
 HU2164'NORTHWEST OF A FENCE CORNER, 7.1 M (23.29 FT) SOUTHWEST OF AND LEVEL
 HU2164'WITH THE ROAD CENTER, AND 0.7 M (2.30 FT) NORTHEAST OF A WITNESS POST
 HU2164'AND FENCE.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO
 HU2164'CAP.
 HU2164
 HU2164                          STATION RECOVERY (2018)
 HU2164
 HU2164'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2018 (JRO)
 HU2164'THE MARK IS 234 FT (71.3 M) NORTHWEST OF THE CENTER OF A WOODEN
 HU2164'BRIDGE, 194 FT (59.1 M) SOUTHEAST OF POLE 711 141 - NOTES DON'T SAY
 HU2164'WHETHER MEASURED DIRECTLY SLANTED TO THE ROAD FROM THE POLE ACROSS THE
 HU2164'ROAD OR MEASURED ALONG THE ROAD TO POINT PERPENDICULAR TO THE ROAD
 HU2164'OPPOSITE THE MARK - 164 FT (50.0 M) SOUTHEAST FROM A CURVE ROAD SIGN,
 HU2164'131 FT (39.9 M) WEST ACROSS THE ROAD FROM PHONE PEDESTAL 44 1/2, 2 FT
 HU2164'(0.6 M) TOWARD THE ROAD FROM A WITNESS POST AT FENCE POST.  THE LOGO
 HU2164'CAP IS 0.2 FT (6 CM) BELOW GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2453 ***********************************************************************
 HU2453  DESIGNATION -  B 181
 HU2453  PID         -  HU2453
 HU2453  STATE/COUNTY-  MD/WICOMICO
 HU2453  COUNTRY     -  US
 HU2453  USGS QUAD   -  DELMAR (2016)
 HU2453
 HU2453                         *CURRENT SURVEY CONTROL
 HU2453  ______________________________________________________________________
 HU2453* NAD 83(1986) POSITION- 38 23 07.     (N) 075 30 19.     (W)   SCALED
 HU2453* NAVD 88 ORTHO HEIGHT -    15.787 (meters)       51.79  (feet) ADJUSTED
 HU2453  ______________________________________________________________________
 HU2453  GEOID HEIGHT    -        -35.848 (meters)                     GEOID18
 HU2453  DYNAMIC HEIGHT  -         15.777 (meters)       51.76  (feet) COMP
 HU2453  MODELED GRAVITY -    980,007.1   (mgal)                       NAVD 88
 HU2453
 HU2453  VERT ORDER      -  SECOND    CLASS I
 HU2453
 HU2453.The horizontal coordinates were scaled from a map and have
 HU2453.an estimated accuracy of +/- 6 seconds.
 HU2453
 HU2453.The orthometric height was determined by differential leveling and
 HU2453.adjusted by the NATIONAL GEODETIC SURVEY
 HU2453.in June 1991.
 HU2453
 HU2453.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2453.GEOID18 height accuracy estimate available here.
 HU2453
 HU2453.Click photographs - Photos may exist for this station.
 HU2453
 HU2453.The dynamic height is computed by dividing the NAVD 88
 HU2453.geopotential number by the normal gravity value computed on the
 HU2453.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2453.degrees latitude (g = 980.6199 gals.).
 HU2453
 HU2453.The modeled gravity was interpolated from observed gravity values.
 HU2453
 HU2453;                    North         East    Units  Estimated Accuracy
 HU2453;SPC MD       -    80,840.      530,590.      MT  (+/- 180 meters Scaled)
 HU2453
 HU2453_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH558486(NAD 83)
 HU2453
 HU2453                          SUPERSEDED SURVEY CONTROL
 HU2453
 HU2453  NGVD 29 (06/12/91)   16.034  (m)           52.60   (f) ADJUSTED    2 1
 HU2453
 HU2453.Superseded values are not recommended for survey control.
 HU2453
 HU2453.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2453.See file dsdata.pdf to determine how the superseded data were derived.
 HU2453
 HU2453_MARKER: I = METAL ROD
 HU2453_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2453_STAMPING: B 181 1990
 HU2453_MARK LOGO: NGS
 HU2453_PROJECTION: RECESSED 8 CENTIMETERS
 HU2453_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2453_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2453_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2453+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2453_ROD/PIPE-DEPTH: 20.6 meters
 HU2453_SLEEVE-DEPTH  : 0.9 meters
 HU2453
 HU2453  HISTORY     - Date     Condition        Report By
 HU2453  HISTORY     - 1990     MONUMENTED       NGS
 HU2453
 HU2453                          STATION DESCRIPTION
 HU2453
 HU2453'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2453'IN WALSTON, AT THE INTERSECTION OF STATE HIGHWAY 346 AND WALSTON
 HU2453'SWITCH ROAD, 26.6 M (87.27 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF A
 HU2453'HOUSE, 10.1 M (33.14 FT) NORTH-NORTHWEST OF THE CENTERLINE OF THE
 HU2453'HIGHWAY, 5.7 M (18.70 FT) WEST OF AND LEVEL WITH THE ROAD CENTER, AND
 HU2453'1.9 M (6.23 FT) NORTHEAST OF UTILITY POLE NUMBER 179.  NOTE--ACCESS
 HU2453'TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2453'PROPERTY OWNED BY JOYCE POWELL, RT 6 BOX 204, SALISBURY, MD 21801,
 HU2453'TELEPHONE NUMBER (301) 742-4073.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2347 ***********************************************************************
 HU2347  DESIGNATION -  B 182
 HU2347  PID         -  HU2347
 HU2347  STATE/COUNTY-  MD/WICOMICO
 HU2347  COUNTRY     -  US
 HU2347  USGS QUAD   -  SALISBURY (2016)
 HU2347
 HU2347                         *CURRENT SURVEY CONTROL
 HU2347  ______________________________________________________________________
 HU2347* NAD 83(1986) POSITION- 38 18 30.     (N) 075 34 40.     (W)   SCALED
 HU2347* NAVD 88 ORTHO HEIGHT -    13.757 (meters)       45.13  (feet) ADJUSTED
 HU2347  ______________________________________________________________________
 HU2347  GEOID HEIGHT    -        -35.928 (meters)                     GEOID18
 HU2347  DYNAMIC HEIGHT  -         13.748 (meters)       45.10  (feet) COMP
 HU2347  MODELED GRAVITY -    979,999.4   (mgal)                       NAVD 88
 HU2347
 HU2347  VERT ORDER      -  SECOND    CLASS I
 HU2347
 HU2347.The horizontal coordinates were scaled from a map and have
 HU2347.an estimated accuracy of +/- 6 seconds.
 HU2347
 HU2347.The orthometric height was determined by differential leveling and
 HU2347.adjusted by the NATIONAL GEODETIC SURVEY
 HU2347.in June 1991.
 HU2347
 HU2347.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2347.GEOID18 height accuracy estimate available here.
 HU2347
 HU2347.Click photographs - Photos may exist for this station.
 HU2347
 HU2347.The dynamic height is computed by dividing the NAVD 88
 HU2347.geopotential number by the normal gravity value computed on the
 HU2347.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2347.degrees latitude (g = 980.6199 gals.).
 HU2347
 HU2347.The modeled gravity was interpolated from observed gravity values.
 HU2347
 HU2347;                    North         East    Units  Estimated Accuracy
 HU2347;SPC MD       -    72,200.      524,390.      MT  (+/- 180 meters Scaled)
 HU2347
 HU2347_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH494401(NAD 83)
 HU2347
 HU2347                          SUPERSEDED SURVEY CONTROL
 HU2347
 HU2347  NGVD 29 (06/12/91)   14.011  (m)           45.97   (f) ADJUSTED    2 1
 HU2347
 HU2347.Superseded values are not recommended for survey control.
 HU2347
 HU2347.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2347.See file dsdata.pdf to determine how the superseded data were derived.
 HU2347
 HU2347_MARKER: I = METAL ROD
 HU2347_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2347_STAMPING: B 182 1989
 HU2347_MARK LOGO: NGS
 HU2347_PROJECTION: FLUSH
 HU2347_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2347_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2347_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2347+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HU2347_ROD/PIPE-DEPTH: 12.1 meters
 HU2347_SLEEVE-DEPTH  : 0.9 meters
 HU2347
 HU2347  HISTORY     - Date     Condition        Report By
 HU2347  HISTORY     - 1989     MONUMENTED       NGS
 HU2347
 HU2347                          STATION DESCRIPTION
 HU2347
 HU2347'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU2347'2.3 KM (1.43 MI) NORTHEASTERLY ALONG DIVISION STREET FROM ITS JUNCTION
 HU2347'WITH U.S. HIGHWAY 13 IN FRUITLAND, THENCE 2.1 KM (1.30 MI) EASTERLY
 HU2347'ALONG MORRIS MILL ROAD, THENCE 1.3 KM (0.81 MI) SOUTHERLY ALONG UNION
 HU2347'CHURCH ROAD, 48.1 M (157.81 FT) SOUTHEAST OF THE CENTERLINE OF
 HU2347'JACKSON ROAD, 11.8 M (38.71 FT) NORTHWEST OF THE NORTH CORNER OF THE
 HU2347'UNION METHODIST CHURCH, 8.5 M (27.89 FT) SOUTHWEST OF THE CENTERLINE
 HU2347'OF THE ROAD, 1.6 M (5.25 FT) SOUTH OF A FENCE CORNER, AND 0.3 M
 HU2347'(0.98 FT) ABOVE THE LEVEL OF THE ROAD.  NOTE--ACCESS TO THE DATUM
 HU2347'POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2331 ***********************************************************************
 HU2331  DESIGNATION -  B 183
 HU2331  PID         -  HU2331
 HU2331  STATE/COUNTY-  MD/WICOMICO
 HU2331  COUNTRY     -  US
 HU2331  USGS QUAD   -  DELMAR (2016)
 HU2331
 HU2331                         *CURRENT SURVEY CONTROL
 HU2331  ______________________________________________________________________
 HU2331* NAD 83(1986) POSITION- 38 24 36.     (N) 075 34 03.     (W)   SCALED
 HU2331* NAVD 88 ORTHO HEIGHT -    13.643 (meters)       44.76  (feet) ADJUSTED
 HU2331  ______________________________________________________________________
 HU2331  GEOID HEIGHT    -        -35.781 (meters)                     GEOID18
 HU2331  DYNAMIC HEIGHT  -         13.635 (meters)       44.73  (feet) COMP
 HU2331  MODELED GRAVITY -    980,009.6   (mgal)                       NAVD 88
 HU2331
 HU2331  VERT ORDER      -  SECOND    CLASS I
 HU2331
 HU2331.The horizontal coordinates were scaled from a map and have
 HU2331.an estimated accuracy of +/- 6 seconds.
 HU2331
 HU2331.The orthometric height was determined by differential leveling and
 HU2331.adjusted by the NATIONAL GEODETIC SURVEY
 HU2331.in June 1991.
 HU2331
 HU2331.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2331.GEOID18 height accuracy estimate available here.
 HU2331
 HU2331.Click photographs - Photos may exist for this station.
 HU2331
 HU2331.The dynamic height is computed by dividing the NAVD 88
 HU2331.geopotential number by the normal gravity value computed on the
 HU2331.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2331.degrees latitude (g = 980.6199 gals.).
 HU2331
 HU2331.The modeled gravity was interpolated from observed gravity values.
 HU2331
 HU2331;                    North         East    Units  Estimated Accuracy
 HU2331;SPC MD       -    83,500.      525,110.      MT  (+/- 180 meters Scaled)
 HU2331
 HU2331_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH504514(NAD 83)
 HU2331
 HU2331                          SUPERSEDED SURVEY CONTROL
 HU2331
 HU2331  NGVD 29 (06/12/91)   13.899  (m)           45.60   (f) ADJUSTED    2 1
 HU2331
 HU2331.Superseded values are not recommended for survey control.
 HU2331
 HU2331.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2331.See file dsdata.pdf to determine how the superseded data were derived.
 HU2331
 HU2331_MARKER: I = METAL ROD
 HU2331_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2331_STAMPING: B 183 1990
 HU2331_MARK LOGO: NGS
 HU2331_PROJECTION: RECESSED 5 CENTIMETERS
 HU2331_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2331_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2331_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2331+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2331_ROD/PIPE-DEPTH: 23.1 meters
 HU2331_SLEEVE-DEPTH  : 0.9 meters
 HU2331
 HU2331  HISTORY     - Date     Condition        Report By
 HU2331  HISTORY     - 1990     MONUMENTED       NGS
 HU2331
 HU2331                          STATION DESCRIPTION
 HU2331
 HU2331'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2331'2.1 KM (1.30 MI) NORTHERLY ALONG U.S. HIGHWAY 13 FROM ITS JUNCTION
 HU2331'WITH ZION ROAD IN SALISBURY, IN THE MEDIAN OF THE HIGHWAY, 20.7 M
 HU2331'(67.91 FT) NORTH OF THE EXTENDED CENTER OF NAYLOR MILL ROAD, 11.1 M
 HU2331'(36.42 FT) EAST OF THE CENTERLINE OF THE SOUTHBOUND LANES OF THE
 HU2331'HIGHWAY, 1.5 M (4.92 FT) SOUTH OF A WITNESS POST, AND 0.2 M
 HU2331'(0.66 FT) BELOW THE LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO THE DATUM
 HU2331'POINT IS THROUCH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2293 ***********************************************************************
 HU2293  DESIGNATION -  B 184
 HU2293  PID         -  HU2293
 HU2293  STATE/COUNTY-  MD/WICOMICO
 HU2293  COUNTRY     -  US
 HU2293  USGS QUAD   -  EDEN (2016)
 HU2293
 HU2293                         *CURRENT SURVEY CONTROL
 HU2293  ______________________________________________________________________
 HU2293* NAD 83(1986) POSITION- 38 20 54.     (N) 075 39 55.     (W)   SCALED
 HU2293* NAVD 88 ORTHO HEIGHT -     6.808 (meters)       22.34  (feet) ADJUSTED
 HU2293  ______________________________________________________________________
 HU2293  GEOID HEIGHT    -        -35.801 (meters)                     GEOID18
 HU2293  DYNAMIC HEIGHT  -          6.804 (meters)       22.32  (feet) COMP
 HU2293  MODELED GRAVITY -    980,003.9   (mgal)                       NAVD 88
 HU2293
 HU2293  VERT ORDER      -  SECOND    CLASS I
 HU2293
 HU2293.The horizontal coordinates were scaled from a map and have
 HU2293.an estimated accuracy of +/- 6 seconds.
 HU2293
 HU2293.The orthometric height was determined by differential leveling and
 HU2293.adjusted by the NATIONAL GEODETIC SURVEY
 HU2293.in June 1991.
 HU2293
 HU2293.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2293.GEOID18 height accuracy estimate available here.
 HU2293
 HU2293.Click photographs - Photos may exist for this station.
 HU2293
 HU2293.The dynamic height is computed by dividing the NAVD 88
 HU2293.geopotential number by the normal gravity value computed on the
 HU2293.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2293.degrees latitude (g = 980.6199 gals.).
 HU2293
 HU2293.The modeled gravity was interpolated from observed gravity values.
 HU2293
 HU2293;                    North         East    Units  Estimated Accuracy
 HU2293;SPC MD       -    76,520.      516,670.      MT  (+/- 180 meters Scaled)
 HU2293
 HU2293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH418446(NAD 83)
 HU2293
 HU2293                          SUPERSEDED SURVEY CONTROL
 HU2293
 HU2293  NGVD 29 (06/12/91)    7.060  (m)           23.16   (f) ADJUSTED    2 1
 HU2293
 HU2293.Superseded values are not recommended for survey control.
 HU2293
 HU2293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2293.See file dsdata.pdf to determine how the superseded data were derived.
 HU2293
 HU2293_MARKER: I = METAL ROD
 HU2293_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2293_STAMPING: B 184 1990
 HU2293_MARK LOGO: NGS
 HU2293_PROJECTION: RECESSED 3 CENTIMETERS
 HU2293_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2293_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2293_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2293+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2293_ROD/PIPE-DEPTH: 24.3 meters
 HU2293_SLEEVE-DEPTH  : 0.9 meters
 HU2293
 HU2293  HISTORY     - Date     Condition        Report By
 HU2293  HISTORY     - 1990     MONUMENTED       NGS
 HU2293
 HU2293                          STATION DESCRIPTION
 HU2293
 HU2293'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2293'4.3 KM (2.67 MI) SOUTHEASTERLY ALONG PEMBERTON DRIVE FROM THE
 HU2293'JUNCTION OF ELLEGOOD STREET IN SALISBURY, 14.0 M (45.93 FT) NORTHWEST
 HU2293'OF UTILITY POLE NUMBER 44962 92536, 12.0 M (39.37 FT) WEST OF THE
 HU2293'CENTERLINE OF THE DRIVE, 10.3 M (33.79 FT) SOUTH OF THE CENTER OF
 HU2293'SCOTLAND PARKWAY, AND LEVEL WITH THE DRIVE.  NOTE--ACCESS TO THE
 HU2293'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2293'PROPERTY OWNED BY OTIS ESHAM, 1001 NITHSDALE DRIVE, SALISBURY, MD
 HU2293'21801, TELEPHONE NUMBER (301) 742-1364.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2237 ***********************************************************************
 HU2237  DESIGNATION -  B 185
 HU2237  PID         -  HU2237
 HU2237  STATE/COUNTY-  MD/WICOMICO
 HU2237  COUNTRY     -  US
 HU2237  USGS QUAD   -  HEBRON (2016)
 HU2237
 HU2237                         *CURRENT SURVEY CONTROL
 HU2237  ______________________________________________________________________
 HU2237* NAD 83(1986) POSITION- 38 23 27.1    (N) 075 41 44.6    (W)   HD_HELD2
 HU2237* NAVD 88 ORTHO HEIGHT -    10.789 (meters)       35.40  (feet) ADJUSTED
 HU2237  ______________________________________________________________________
 HU2237  GEOID HEIGHT    -        -35.711 (meters)                     GEOID18
 HU2237  DYNAMIC HEIGHT  -         10.782 (meters)       35.37  (feet) COMP
 HU2237  MODELED GRAVITY -    980,008.7   (mgal)                       NAVD 88
 HU2237
 HU2237  VERT ORDER      -  SECOND    CLASS I
 HU2237
 HU2237.The horizontal coordinates were established by autonomous hand held GPS
 HU2237.observations and have an estimated accuracy of +/- 10 meters.
 HU2237
 HU2237.The orthometric height was determined by differential leveling and
 HU2237.adjusted by the NATIONAL GEODETIC SURVEY
 HU2237.in June 1991.
 HU2237
 HU2237.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2237.GEOID18 height accuracy estimate available here.
 HU2237
 HU2237.Click photographs - Photos may exist for this station.
 HU2237
 HU2237.The dynamic height is computed by dividing the NAVD 88
 HU2237.geopotential number by the normal gravity value computed on the
 HU2237.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2237.degrees latitude (g = 980.6199 gals.).
 HU2237
 HU2237.The modeled gravity was interpolated from observed gravity values.
 HU2237
 HU2237;                    North         East    Units  Estimated Accuracy
 HU2237;SPC MD       -    81,203.      513,942.      MT  (+/- 10 meters HH2 GPS)
 HU2237
 HU2237_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3924249412(NAD 83)
 HU2237
 HU2237                          SUPERSEDED SURVEY CONTROL
 HU2237
 HU2237  NGVD 29 (06/12/91)   11.038  (m)           36.21   (f) ADJUSTED    2 1
 HU2237
 HU2237.Superseded values are not recommended for survey control.
 HU2237
 HU2237.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2237.See file dsdata.pdf to determine how the superseded data were derived.
 HU2237
 HU2237_MARKER: F = FLANGE-ENCASED ROD
 HU2237_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2237_STAMPING: B 185 1990
 HU2237_MARK LOGO: NGS
 HU2237_PROJECTION: RECESSED 15 CENTIMETERS
 HU2237_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2237_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2237_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2237+SATELLITE: SATELLITE OBSERVATIONS - September 06, 2018
 HU2237_ROD/PIPE-DEPTH: 19.2 meters
 HU2237_SLEEVE-DEPTH  : 0.9 meters
 HU2237
 HU2237  HISTORY     - Date     Condition        Report By
 HU2237  HISTORY     - 1990     MONUMENTED       NGS
 HU2237  HISTORY     - 20180906 GOOD             ARCSHE
 HU2237
 HU2237                          STATION DESCRIPTION
 HU2237
 HU2237'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2237'2.2 KM (1.37 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU2237'ROAD) FROM THE JUNCTION OF RAILROAD AVENUE IN HEBRON, THENCE 0.7 KM
 HU2237'(0.43 MI) SOUTHEASTERLY ALONG QUANTICO CREEK ROAD, THENCE 1.2 KM
 HU2237'(0.75 MI) SOUTHEASTERLY ALONG FIRE TOWER ROAD, 34.5 M (113.19 FT)
 HU2237'NORTHWEST OF THE CENTER OF A LANE LEADING WEST, 29.9 M (98.10 FT)
 HU2237'NORTHWEST OF THE NORTHWEST END OF A PIPE CULVERT, 8.5 M (27.89 FT)
 HU2237'SOUTHWEST OF THE CENTER OF THE ROAD, 0.8 M (2.62 FT) SOUTHWEST OF A
 HU2237'UTILITY POLE, 0.6 M (1.97 FT) ABOVE THE LEVEL OF THE ROAD, AND 0.5 M
 HU2237'(1.64 FT) NORTHEAST OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM
 HU2237'POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2237
 HU2237                          STATION RECOVERY (2018)
 HU2237
 HU2237'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 HU2237'IT IS 1.8 FT (0.5 M) SOUTHWEST (BEHIND) POWER POLE NUMBER 721 172 18.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2135 ***********************************************************************
 HU2135  DESIGNATION -  B 186
 HU2135  PID         -  HU2135
 HU2135  STATE/COUNTY-  MD/WICOMICO
 HU2135  COUNTRY     -  US
 HU2135  USGS QUAD   -  RHODESDALE (2016)
 HU2135
 HU2135                         *CURRENT SURVEY CONTROL
 HU2135  ______________________________________________________________________
 HU2135* NAD 83(1986) POSITION- 38 30 39.2    (N) 075 45 20.7    (W)   HD_HELD2
 HU2135* NAVD 88 ORTHO HEIGHT -     1.914 (meters)        6.28  (feet) ADJUSTED
 HU2135  ______________________________________________________________________
 HU2135  GEOID HEIGHT    -        -35.542 (meters)                     GEOID18
 HU2135  DYNAMIC HEIGHT  -          1.913 (meters)        6.28  (feet) COMP
 HU2135  MODELED GRAVITY -    980,012.0   (mgal)                       NAVD 88
 HU2135
 HU2135  VERT ORDER      -  SECOND    CLASS I
 HU2135
 HU2135.The horizontal coordinates were established by autonomous hand held GPS
 HU2135.observations and have an estimated accuracy of +/- 10 meters.
 HU2135
 HU2135.The orthometric height was determined by differential leveling and
 HU2135.adjusted by the NATIONAL GEODETIC SURVEY
 HU2135.in June 1991.
 HU2135
 HU2135.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2135.GEOID18 height accuracy estimate available here.
 HU2135
 HU2135.Click photographs - Photos may exist for this station.
 HU2135
 HU2135.The dynamic height is computed by dividing the NAVD 88
 HU2135.geopotential number by the normal gravity value computed on the
 HU2135.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2135.degrees latitude (g = 980.6199 gals.).
 HU2135
 HU2135.The modeled gravity was interpolated from observed gravity values.
 HU2135
 HU2135;                    North         East    Units  Estimated Accuracy
 HU2135;SPC MD       -    94,452.      508,516.      MT  (+/- 10 meters HH2 GPS)
 HU2135
 HU2135_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3410962772(NAD 83)
 HU2135
 HU2135                          SUPERSEDED SURVEY CONTROL
 HU2135
 HU2135  NGVD 29 (06/12/91)    2.159  (m)            7.08   (f) ADJUSTED    2 1
 HU2135
 HU2135.Superseded values are not recommended for survey control.
 HU2135
 HU2135.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2135.See file dsdata.pdf to determine how the superseded data were derived.
 HU2135
 HU2135_MARKER: F = FLANGE-ENCASED ROD
 HU2135_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2135_STAMPING: B 186 1990
 HU2135_MARK LOGO: NGS
 HU2135_PROJECTION: RECESSED 6 CENTIMETERS
 HU2135_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2135_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2135_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2135+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2017
 HU2135_ROD/PIPE-DEPTH: 14.4 meters
 HU2135_SLEEVE-DEPTH  : 0.9 meters
 HU2135
 HU2135  HISTORY     - Date     Condition        Report By
 HU2135  HISTORY     - 1990     MONUMENTED       NGS
 HU2135  HISTORY     - 20170606 GOOD             ARCSHE
 HU2135
 HU2135                          STATION DESCRIPTION
 HU2135
 HU2135'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2135'5.0 KM (3.11 MI) NORTHERLY ALONG STATE HIGHWAY 313 FROM THE JUNCTION
 HU2135'OF STATE HIGHWAY 54 IN MARDELA SPRINGS, THENCE 1.1 KM (0.68 MI)
 HU2135'SOUTHWESTERLY ALONG STATE HIGHWAY 460 (RIVERTON ROAD), THENCE 0.2 KM
 HU2135'(0.12 MI) NORTHEAST ALONG SCHOOL HOUSE ROAD, 22.0 M (72.18 FT) SOUTH
 HU2135'OF THE CENTER OF A DRIVEWAY, 19.3 M (63.32 FT) WEST OF THE SOUTHWEST
 HU2135'CORNER OF A HOUSE, 6.3 M (20.67 FT) EAST OF THE CENTER OF THE ROAD,
 HU2135'2.0 M (6.56 FT) NORTHEAST OF UTILITY POLE NUMBER 42416 98474, AND 1.0
 HU2135'M (3.28 FT) ABOVE THE LEVEL OF THE ROAD.  NOTE--ACCESS TO THE DATUM
 HU2135'POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY
 HU2135'OWNED BY MR E. D. DASHIELL, RT 1 BOX 129, MARDELA SPRINGS, MD
 HU2135'21837, TELEPHONE NUMBER (301) 883-3314.
 HU2135
 HU2135                          STATION RECOVERY (2017)
 HU2135
 HU2135'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2135'THE MARK IS IN FRONT OF HOUSE 11515, 20 FT (6.1 M) SOUTHEAST OF THE
 HU2135'ROAD, ABOUT AT THE END OF A CURVE TO THE LEFT HEADED SOUTHWEST, 17 FT
 HU2135'(5.2 M) SOUTHWEST OF THE SOUTHWEST LINE EXTENDED OF THE HOUSE, 12 FT
 HU2135'(3.7 M) NORTHEAST OF THE SOUTHWEST FACE OF A BRICK WALL, 7.2 FT (2.2
 HU2135'M) SOUTHEAST OR BEHIND POLE 42416 98471, 5 FT (1.5 M) SOUTHEAST OF THE
 HU2135'NORTHWEST FACE OF THE BRICK WALL AND LEVEL WITH THE TOP OF THE WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2252 ***********************************************************************
 HU2252  DESIGNATION -  B 187
 HU2252  PID         -  HU2252
 HU2252  STATE/COUNTY-  MD/WICOMICO
 HU2252  COUNTRY     -  US
 HU2252  USGS QUAD   -  WETIPQUIN (2016)
 HU2252
 HU2252                         *CURRENT SURVEY CONTROL
 HU2252  ______________________________________________________________________
 HU2252* NAD 83(1986) POSITION- 38 21 00.     (N) 075 50 36.     (W)   SCALED
 HU2252* NAVD 88 ORTHO HEIGHT -     4.119 (meters)       13.51  (feet) ADJUSTED
 HU2252  ______________________________________________________________________
 HU2252  GEOID HEIGHT    -        -35.663 (meters)                     GEOID18
 HU2252  DYNAMIC HEIGHT  -          4.116 (meters)       13.50  (feet) COMP
 HU2252  MODELED GRAVITY -    980,001.9   (mgal)                       NAVD 88
 HU2252
 HU2252  VERT ORDER      -  SECOND    CLASS I
 HU2252
 HU2252.The horizontal coordinates were scaled from a map and have
 HU2252.an estimated accuracy of +/- 6 seconds.
 HU2252
 HU2252.The orthometric height was determined by differential leveling and
 HU2252.adjusted by the NATIONAL GEODETIC SURVEY
 HU2252.in June 1991.
 HU2252
 HU2252.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2252.GEOID18 height accuracy estimate available here.
 HU2252
 HU2252.Click photographs - Photos may exist for this station.
 HU2252
 HU2252.The dynamic height is computed by dividing the NAVD 88
 HU2252.geopotential number by the normal gravity value computed on the
 HU2252.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2252.degrees latitude (g = 980.6199 gals.).
 HU2252
 HU2252.The modeled gravity was interpolated from observed gravity values.
 HU2252
 HU2252;                    North         East    Units  Estimated Accuracy
 HU2252;SPC MD       -    76,490.      501,110.      MT  (+/- 180 meters Scaled)
 HU2252
 HU2252_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH263449(NAD 83)
 HU2252
 HU2252                          SUPERSEDED SURVEY CONTROL
 HU2252
 HU2252  NGVD 29 (06/12/91)    4.373  (m)           14.35   (f) ADJUSTED    2 1
 HU2252
 HU2252.Superseded values are not recommended for survey control.
 HU2252
 HU2252.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2252.See file dsdata.pdf to determine how the superseded data were derived.
 HU2252
 HU2252_STAMPING: B 187 1990
 HU2252_MARK LOGO: NGS
 HU2252_PROJECTION: RECESSED 3 CENTIMETERS
 HU2252_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2252+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2252_ROD/PIPE-DEPTH: 18.2 meters
 HU2252_SLEEVE-DEPTH  : 0.9 meters
 HU2252
 HU2252  HISTORY     - Date     Condition        Report By
 HU2252  HISTORY     - 1990     MONUMENTED       NGS
 HU2252  HISTORY     - 20190519 MARK NOT FOUND   PROFLN
 HU2252
 HU2252                          STATION DESCRIPTION
 HU2252
 HU2252'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2252'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2252'OFFICE IN QUANTICO, THENCE 5.0 KM (3.11 MI) WESTERLY ALONG STATE
 HU2252'HIGHWAY 349, THENCE 5.2 KM (3.23 MI) NORTHWESTERLY ALONG ROYAL OAK
 HU2252'ROAD, 8.8 M (28.87 FT) SOUTHEAST OF AND LEVEL WITH THE ROAD CENTER,
 HU2252'1.2 M (3.94 FT) SOUTHWEST OF A UTILITY POLE, AND 0.3 M (0.98 FT)
 HU2252'NORTHWEST OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT IS
 HU2252'THROUGH A 5-INCH LOGO CAP.
 HU2252
 HU2252                          STATION RECOVERY (2019)
 HU2252
 HU2252'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2252'SEARCHED FOR AND NOT FOUND.  A POWER POLE IS AT THE AREA OF THE SCALED
 HU2252'POSITION BUT NO MARK WAS FOUND NEAR IT.  DISTURBED GROUND IS PILED
 HU2252'ABOUT A FOOT HIGH FOR ABOUT 100 FT (30.5 M) BOTH WAYS FROM THE POLE.
 HU2252'POSITION SCALED AT THE RUNNING DISTANCE SW FROM A 187, 0.87 KM (0.54
 HU2252'MI), FALL ABOUT 100 FT (30.5 M) NORTHEAST OF THE CURRENT SCALED
 HU2252'POSITION.  THAT WHOLE AREA WAS SEARCHED WITH A METAL DETECTOR AT THE
 HU2252'DISTANCE OFF THE ROAD WITH NO LOGO CAP FOUND, ONLY FALSE POSITIVES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2398 ***********************************************************************
 HU2398  DESIGNATION -  B 188
 HU2398  PID         -  HU2398
 HU2398  STATE/COUNTY-  MD/WICOMICO
 HU2398  COUNTRY     -  US
 HU2398  USGS QUAD   -  DELMAR (2016)
 HU2398
 HU2398                         *CURRENT SURVEY CONTROL
 HU2398  ______________________________________________________________________
 HU2398* NAD 83(1986) POSITION- 38 24 18.     (N) 075 31 29.     (W)   SCALED
 HU2398* NAVD 88 ORTHO HEIGHT -    15.190 (meters)       49.84  (feet) ADJUSTED
 HU2398  ______________________________________________________________________
 HU2398  GEOID HEIGHT    -        -35.811 (meters)                     GEOID18
 HU2398  DYNAMIC HEIGHT  -         15.180 (meters)       49.80  (feet) COMP
 HU2398  MODELED GRAVITY -    980,008.8   (mgal)                       NAVD 88
 HU2398
 HU2398  VERT ORDER      -  SECOND    CLASS I
 HU2398
 HU2398.The horizontal coordinates were scaled from a map and have
 HU2398.an estimated accuracy of +/- 6 seconds.
 HU2398
 HU2398.The orthometric height was determined by differential leveling and
 HU2398.adjusted by the NATIONAL GEODETIC SURVEY
 HU2398.in June 1991.
 HU2398
 HU2398.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2398.GEOID18 height accuracy estimate available here.
 HU2398
 HU2398.Click photographs - Photos may exist for this station.
 HU2398
 HU2398.The dynamic height is computed by dividing the NAVD 88
 HU2398.geopotential number by the normal gravity value computed on the
 HU2398.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2398.degrees latitude (g = 980.6199 gals.).
 HU2398
 HU2398.The modeled gravity was interpolated from observed gravity values.
 HU2398
 HU2398;                    North         East    Units  Estimated Accuracy
 HU2398;SPC MD       -    83,000.      528,850.      MT  (+/- 180 meters Scaled)
 HU2398
 HU2398_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH541508(NAD 83)
 HU2398
 HU2398                          SUPERSEDED SURVEY CONTROL
 HU2398
 HU2398  NGVD 29 (06/12/91)   15.442  (m)           50.66   (f) ADJUSTED    2 1
 HU2398
 HU2398.Superseded values are not recommended for survey control.
 HU2398
 HU2398.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2398.See file dsdata.pdf to determine how the superseded data were derived.
 HU2398
 HU2398_MARKER: I = METAL ROD
 HU2398_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2398_STAMPING: B 188 1990
 HU2398_MARK LOGO: NGS
 HU2398_PROJECTION: RECESSED 2 CENTIMETERS
 HU2398_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2398_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2398_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2398+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2398_ROD/PIPE-DEPTH: 26.7 meters
 HU2398_SLEEVE-DEPTH  : 0.9 meters
 HU2398
 HU2398  HISTORY     - Date     Condition        Report By
 HU2398  HISTORY     - 1990     MONUMENTED       NGS
 HU2398
 HU2398                          STATION DESCRIPTION
 HU2398
 HU2398'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2398'4.8 KM (2.98 MI) EASTERLY ALONG ZION ROAD FROM THE JUNCTION OF U.S.
 HU2398'HIGHWAY 13 BUSINESS IN SALISBURY, 36.2 M (118.77 FT) SOUTHWEST OF THE
 HU2398'SOUTHWEST CORNER OF A HOUSE, 13.6 M (44.62 FT) NORTHWEST OF UTILITY
 HU2398'POLE NUMBER 49018 94575, 12.1 M (39.70 FT) WEST OF A FENCE CORNER,
 HU2398'6.9 M (22.64 FT) NORTH OF AND LEVEL WITH THE CENTERLINE OF THE ROAD,
 HU2398'3.7 M (12.14 FT) WEST OF UTILITY PEDESTAL NUMBER 71, AND 0.3 M
 HU2398'(0.98 FT) SOUTH-SOUTHEAST OF A WITNESS POST.  NOTE--ACCESS TO THE
 HU2398'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2546 ***********************************************************************
 HU2546  DESIGNATION -  B 189
 HU2546  PID         -  HU2546
 HU2546  STATE/COUNTY-  MD/WICOMICO
 HU2546  COUNTRY     -  US
 HU2546  USGS QUAD   -  PITTSVILLE (2016)
 HU2546
 HU2546                         *CURRENT SURVEY CONTROL
 HU2546  ______________________________________________________________________
 HU2546* NAD 83(1986) POSITION- 38 24 28.     (N) 075 25 15.     (W)   SCALED
 HU2546* NAVD 88 ORTHO HEIGHT -    18.293 (meters)       60.02  (feet) ADJUSTED
 HU2546  ______________________________________________________________________
 HU2546  GEOID HEIGHT    -        -35.868 (meters)                     GEOID18
 HU2546  DYNAMIC HEIGHT  -         18.281 (meters)       59.98  (feet) COMP
 HU2546  MODELED GRAVITY -    980,009.1   (mgal)                       NAVD 88
 HU2546
 HU2546  VERT ORDER      -  SECOND    CLASS I
 HU2546
 HU2546.The horizontal coordinates were scaled from a map and have
 HU2546.an estimated accuracy of +/- 6 seconds.
 HU2546
 HU2546.The orthometric height was determined by differential leveling and
 HU2546.adjusted by the NATIONAL GEODETIC SURVEY
 HU2546.in June 1991.
 HU2546
 HU2546.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2546.GEOID18 height accuracy estimate available here.
 HU2546
 HU2546.Click photographs - Photos may exist for this station.
 HU2546
 HU2546.The dynamic height is computed by dividing the NAVD 88
 HU2546.geopotential number by the normal gravity value computed on the
 HU2546.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2546.degrees latitude (g = 980.6199 gals.).
 HU2546
 HU2546.The modeled gravity was interpolated from observed gravity values.
 HU2546
 HU2546;                    North         East    Units  Estimated Accuracy
 HU2546;SPC MD       -    83,460.      537,920.      MT  (+/- 180 meters Scaled)
 HU2546
 HU2546_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH632511(NAD 83)
 HU2546
 HU2546                          SUPERSEDED SURVEY CONTROL
 HU2546
 HU2546  NGVD 29 (06/12/91)   18.539  (m)           60.82   (f) ADJUSTED    2 1
 HU2546
 HU2546.Superseded values are not recommended for survey control.
 HU2546
 HU2546.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2546.See file dsdata.pdf to determine how the superseded data were derived.
 HU2546
 HU2546_MARKER: I = METAL ROD
 HU2546_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2546_STAMPING: B 189 1990
 HU2546_MARK LOGO: NGS
 HU2546_PROJECTION: RECESSED 2 CENTIMETERS
 HU2546_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2546_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2546_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2546+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2546_ROD/PIPE-DEPTH: 9.7 meters
 HU2546_SLEEVE-DEPTH  : 0.9 meters
 HU2546
 HU2546  HISTORY     - Date     Condition        Report By
 HU2546  HISTORY     - 1990     MONUMENTED       NGS
 HU2546
 HU2546                          STATION DESCRIPTION
 HU2546
 HU2546'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2546'0.8 KM (0.50 MI) NORTHWESTERLY ALONG PITTSVILLE ROAD FROM THE JUNCTION
 HU2546'OF STATE HIGHWAY 353 (PITTSVILLE DELAWARE ROAD) IN PITTSVILLE, 25.0 M
 HU2546'(82.02 FT) NORTHWEST OF THE CENTER OF A DRIVEWAY, 22.8 M (74.80 FT)
 HU2546'WEST-SOUTHWEST OF THE NORTHWEST CORNER OF A HOUSE, 7.4 M (24.28 FT)
 HU2546'NORTHEAST OF AND LEVEL WITH THE ROAD CENTER, AND 4.3 M (14.11 FT)
 HU2546'SOUTHEAST OF THE CENTER OF A DRIVEWAY.  NOTE--ACCESS TO THE DATUM
 HU2546'POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY
 HU2546'OWNED BY MR. DANIEL NICHOLSON, RT. 2 BOX 244 A, PITTSVILLE, MD 21850,
 HU2546'TELEPHONE NUMBER (301) 835-2314.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2447 ***********************************************************************
 HU2447  DESIGNATION -  B 190
 HU2447  PID         -  HU2447
 HU2447  STATE/COUNTY-  MD/WICOMICO
 HU2447  COUNTRY     -  US
 HU2447  USGS QUAD   -  WANGO (2016)
 HU2447
 HU2447                         *CURRENT SURVEY CONTROL
 HU2447  ______________________________________________________________________
 HU2447* NAD 83(1986) POSITION- 38 21 44.     (N) 075 25 49.     (W)   SCALED
 HU2447* NAVD 88 ORTHO HEIGHT -    17.238 (meters)       56.56  (feet) ADJUSTED
 HU2447  ______________________________________________________________________
 HU2447  GEOID HEIGHT    -        -35.925 (meters)                     GEOID18
 HU2447  DYNAMIC HEIGHT  -         17.227 (meters)       56.52  (feet) COMP
 HU2447  MODELED GRAVITY -    980,004.8   (mgal)                       NAVD 88
 HU2447
 HU2447  VERT ORDER      -  SECOND    CLASS I
 HU2447
 HU2447.The horizontal coordinates were scaled from a map and have
 HU2447.an estimated accuracy of +/- 6 seconds.
 HU2447
 HU2447.The orthometric height was determined by differential leveling and
 HU2447.adjusted by the NATIONAL GEODETIC SURVEY
 HU2447.in June 1991.
 HU2447
 HU2447.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2447.GEOID18 height accuracy estimate available here.
 HU2447
 HU2447.Click photographs - Photos may exist for this station.
 HU2447
 HU2447.The dynamic height is computed by dividing the NAVD 88
 HU2447.geopotential number by the normal gravity value computed on the
 HU2447.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2447.degrees latitude (g = 980.6199 gals.).
 HU2447
 HU2447.The modeled gravity was interpolated from observed gravity values.
 HU2447
 HU2447;                    North         East    Units  Estimated Accuracy
 HU2447;SPC MD       -    78,390.      537,180.      MT  (+/- 180 meters Scaled)
 HU2447
 HU2447_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH624460(NAD 83)
 HU2447
 HU2447                          SUPERSEDED SURVEY CONTROL
 HU2447
 HU2447  NGVD 29 (06/12/91)   17.480  (m)           57.35   (f) ADJUSTED    2 1
 HU2447
 HU2447.Superseded values are not recommended for survey control.
 HU2447
 HU2447.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2447.See file dsdata.pdf to determine how the superseded data were derived.
 HU2447
 HU2447_MARKER: I = METAL ROD
 HU2447_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2447_STAMPING: B 190 1990
 HU2447_MARK LOGO: NGS
 HU2447_PROJECTION: RECESSED 4 CENTIMETERS
 HU2447_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2447_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2447_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2447+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2447_ROD/PIPE-DEPTH: 24.3 meters
 HU2447_SLEEVE-DEPTH  : 0.9 meters
 HU2447
 HU2447  HISTORY     - Date     Condition        Report By
 HU2447  HISTORY     - 1990     MONUMENTED       NGS
 HU2447
 HU2447                          STATION DESCRIPTION
 HU2447
 HU2447'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2447'3.4 KM (2.11 MI) SOUTHWESTERLY ALONG SIXTY FOOT ROAD FROM THE JUNCTION
 HU2447'OF STATE HIGHWAY 346 (OCEAN CITY ROAD) IN PITTSVILLE, 15.7 M
 HU2447'(51.51 FT) NORTHEAST OF THE CENTER OF POWELL ROAD, 11.7 M (38.39 FT)
 HU2447'SOUTHEAST OF THE CENTERLINE OF THE ROAD, 2.5 M (8.20 FT) SOUTHEAST OF
 HU2447'UTILITY PEDESTAL NUMBER 28, 0.3 M (0.98 FT) WEST OF A WITNESS POST,
 HU2447'AND 0.3 M (0.98 FT) ABOVE THE LEVEL OF THE ROAD.  NOTE--ACCESS TO THE
 HU2447'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8784 ***********************************************************************
 HV8784  DESIGNATION -  B 191
 HV8784  PID         -  HV8784
 HV8784  STATE/COUNTY-  MD/CHARLES
 HV8784  COUNTRY     -  US
 HV8784  USGS QUAD   -  LA PLATA (2016)
 HV8784
 HV8784                         *CURRENT SURVEY CONTROL
 HV8784  ______________________________________________________________________
 HV8784* NAD 83(1986) POSITION- 38 31 48.     (N) 076 59 55.     (W)   SCALED
 HV8784* NAVD 88 ORTHO HEIGHT -    24.666 (meters)       80.93  (feet) ADJUSTED
 HV8784  ______________________________________________________________________
 HV8784  GEOID HEIGHT    -        -32.968 (meters)                     GEOID18
 HV8784  DYNAMIC HEIGHT  -         24.651 (meters)       80.88  (feet) COMP
 HV8784  MODELED GRAVITY -    980,032.2   (mgal)                       NAVD 88
 HV8784
 HV8784  VERT ORDER      -  FIRST     CLASS II
 HV8784
 HV8784.The horizontal coordinates were scaled from a map and have
 HV8784.an estimated accuracy of +/- 6 seconds.
 HV8784
 HV8784.The orthometric height was determined by differential leveling and
 HV8784.adjusted by the NATIONAL GEODETIC SURVEY
 HV8784.in June 1991.
 HV8784
 HV8784.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8784.GEOID18 height accuracy estimate available here.
 HV8784
 HV8784.Click photographs - Photos may exist for this station.
 HV8784
 HV8784.The dynamic height is computed by dividing the NAVD 88
 HV8784.geopotential number by the normal gravity value computed on the
 HV8784.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8784.degrees latitude (g = 980.6199 gals.).
 HV8784
 HV8784.The modeled gravity was interpolated from observed gravity values.
 HV8784
 HV8784;                    North         East    Units  Estimated Accuracy
 HV8784;SPC MD       -    95,830.      400,120.      MT  (+/- 180 meters Scaled)
 HV8784
 HV8784_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH257665(NAD 83)
 HV8784
 HV8784                          SUPERSEDED SURVEY CONTROL
 HV8784
 HV8784.No superseded survey control is available for this station.
 HV8784
 HV8784_MARKER: I = METAL ROD
 HV8784_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8784_STAMPING: B 191 1990
 HV8784_MARK LOGO: NGS
 HV8784_PROJECTION: FLUSH
 HV8784_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8784_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8784_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8784+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8784_ROD/PIPE-DEPTH: 5.9 meters
 HV8784
 HV8784  HISTORY     - Date     Condition        Report By
 HV8784  HISTORY     - 1990     MONUMENTED       NGS
 HV8784
 HV8784                          STATION DESCRIPTION
 HV8784
 HV8784'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8784'1.61 KM (1.00 MI) WESTERLY ALONG STATE HIGHWAY 6 FROM THE JUNCTION OF
 HV8784'U.S. HIGHWAY 301 IN LA PLATA, 15.1 M (49.54 FT) EAST OF THE CENTER
 HV8784'OF A PAVED DRIVEWAY, 11.7 M (38.39 FT) NORTH OF AND LEVEL WITH THE
 HV8784'CENTERLINE OF THE HIGHWAY, 1.0 M (3.28 FT) WEST OF UTILITY POLE
 HV8784'NUMBER 39, AND 0.5 M (1.64 FT) SOUTH OF A WITNESS POST AND FENCE.
 HV8784'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6486 ***********************************************************************
 JV6486  DESIGNATION -  B 192
 JV6486  PID         -  JV6486
 JV6486  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6486  COUNTRY     -  US
 JV6486  USGS QUAD   -  BELTSVILLE (2016)
 JV6486
 JV6486                         *CURRENT SURVEY CONTROL
 JV6486  ______________________________________________________________________
 JV6486* NAD 83(1986) POSITION- 39 01 58.68   (N) 076 52 53.74   (W)   HD_HELD1
 JV6486* NAVD 88 ORTHO HEIGHT -    35.857 (meters)      117.64  (feet) ADJUSTED
 JV6486  ______________________________________________________________________
 JV6486  GEOID HEIGHT    -        -32.224 (meters)                     GEOID18
 JV6486  DYNAMIC HEIGHT  -         35.838 (meters)      117.58  (feet) COMP
 JV6486  MODELED GRAVITY -    980,098.0   (mgal)                       NAVD 88
 JV6486
 JV6486  VERT ORDER      -  SECOND    CLASS II
 JV6486
 JV6486.The horizontal coordinates were determined by differentially corrected
 JV6486.hand held GPS observations or other comparable positioning techniques
 JV6486.and have an estimated accuracy of +/- 3 meters.
 JV6486
 JV6486.The orthometric height was determined by differential leveling and
 JV6486.adjusted by the NATIONAL GEODETIC SURVEY
 JV6486.in June 1991.
 JV6486
 JV6486.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6486.GEOID18 height accuracy estimate available here.
 JV6486
 JV6486.Click photographs - Photos may exist for this station.
 JV6486
 JV6486.The dynamic height is computed by dividing the NAVD 88
 JV6486.geopotential number by the normal gravity value computed on the
 JV6486.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6486.degrees latitude (g = 980.6199 gals.).
 JV6486
 JV6486.The modeled gravity was interpolated from observed gravity values.
 JV6486
 JV6486;                    North         East    Units  Estimated Accuracy
 JV6486;SPC MD       -   151,672.5     410,251.8     MT  (+/- 3 meters HH1 GPS) 
 JV6486
 JV6486_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3713822119(NAD 83)
 JV6486
 JV6486                          SUPERSEDED SURVEY CONTROL
 JV6486
 JV6486.No superseded survey control is available for this station.
 JV6486
 JV6486_MARKER: DV = VERTICAL CONTROL DISK
 JV6486_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6486_SP_SET: HEADWALL
 JV6486_STAMPING: B 192 1990
 JV6486_MARK LOGO: NGS
 JV6486_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6486_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6486+STABILITY: SURFACE MOTION
 JV6486_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6486+SATELLITE: SATELLITE OBSERVATIONS - March 05, 2010
 JV6486
 JV6486  HISTORY     - Date     Condition        Report By
 JV6486  HISTORY     - 1990     MONUMENTED       NGS
 JV6486  HISTORY     - 20100305 GOOD             NGS
 JV6486
 JV6486                          STATION DESCRIPTION
 JV6486
 JV6486'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JV6486'2.4 KM (1.5 MI) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION OF
 JV6486'U.S. HIGHWAY 1 IN BELTSVILLE, IN TOP OF AND 1.3 M (4.3 FT) NORTHEAST
 JV6486'OF THE SOUTHWEST END OF THE SOUTHEAST ROCK HEADWALL OF A BRIDGE
 JV6486'SPANNING A CREEK, 30.9 M (101.4 FT) SOUTHWEST OF THE CENTER OF A
 JV6486'DRIVEWAY LEADING TO THE ANIMAL RESEARCH CENTER, AND 6.2 M (20.3 FT)
 JV6486'SOUTHEAST OF AND LEVEL WITH THE ROAD CENTERLINE.
 JV6486
 JV6486                          STATION RECOVERY (2010)
 JV6486
 JV6486'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV6486'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6662 ***********************************************************************
 JV6662  DESIGNATION -  B 194
 JV6662  PID         -  JV6662
 JV6662  STATE/COUNTY-  MD/CARROLL
 JV6662  COUNTRY     -  US
 JV6662  USGS QUAD   -  WINFIELD (2016)
 JV6662
 JV6662                         *CURRENT SURVEY CONTROL
 JV6662  ______________________________________________________________________
 JV6662* NAD 83(1986) POSITION- 39 27 19.3    (N) 077 04 51.9    (W)   HD_HELD2
 JV6662* NAVD 88 ORTHO HEIGHT -   237.483 (meters)      779.14  (feet) ADJUSTED
 JV6662  ______________________________________________________________________
 JV6662  GEOID HEIGHT    -        -32.033 (meters)                     GEOID18
 JV6662  DYNAMIC HEIGHT  -        237.359 (meters)      778.74  (feet) COMP
 JV6662  MODELED GRAVITY -    980,094.7   (mgal)                       NAVD 88
 JV6662
 JV6662  VERT ORDER      -  SECOND    CLASS I
 JV6662
 JV6662.The horizontal coordinates were established by autonomous hand held GPS
 JV6662.observations and have an estimated accuracy of +/- 10 meters.
 JV6662
 JV6662.The orthometric height was determined by differential leveling and
 JV6662.adjusted by the NATIONAL GEODETIC SURVEY
 JV6662.in August 1994.
 JV6662
 JV6662.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6662.GEOID18 height accuracy estimate available here.
 JV6662
 JV6662.Click photographs - Photos may exist for this station.
 JV6662
 JV6662.The dynamic height is computed by dividing the NAVD 88
 JV6662.geopotential number by the normal gravity value computed on the
 JV6662.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6662.degrees latitude (g = 980.6199 gals.).
 JV6662
 JV6662.The modeled gravity was interpolated from observed gravity values.
 JV6662
 JV6662;                    North         East    Units  Estimated Accuracy
 JV6662;SPC MD       -   198,562.      393,021.      MT  (+/- 10 meters HH2 GPS)
 JV6662
 JV6662_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2094869377(NAD 83)
 JV6662
 JV6662                          SUPERSEDED SURVEY CONTROL
 JV6662
 JV6662.No superseded survey control is available for this station.
 JV6662
 JV6662_MARKER: DV = VERTICAL CONTROL DISK
 JV6662_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6662_STAMPING: B 194 1990
 JV6662_MARK LOGO: NGS
 JV6662_PROJECTION: RECESSED 2 CENTIMETERS
 JV6662_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6662_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6662+STABILITY: SURFACE MOTION
 JV6662_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6662+SATELLITE: SATELLITE OBSERVATIONS - January 22, 2008
 JV6662
 JV6662  HISTORY     - Date     Condition        Report By
 JV6662  HISTORY     - 1990     MONUMENTED       NGS
 JV6662  HISTORY     - 20080122 GOOD             MDSHA
 JV6662
 JV6662                          STATION DESCRIPTION
 JV6662
 JV6662'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JV6662'0.6 KM (0.4 MI) EAST ALONG STATE HIGHWAY 26 FROM THE INTERSECTION OF
 JV6662'STATE HIGHWAYS 26 AND 27 AT TAYLORVILLE, 12.5 M (41.0 FT) SOUTHWEST
 JV6662'OF THE CENTER OF STATE HIGHWAY 26, 1.8 M (5.9 FT) SOUTHEAST OF A
 JV6662'WOODEN FENCE CORNER, 11.1 M (36.4 FT) SOUTHEAST OF A TELEPHONE POLE
 JV6662'NUMBERED 8, 17.7 M (58.1 FT) SOUTHEAST OF THE CENTER OF A MACADAME
 JV6662'DRIVE, 26.5 M (86.9 FT) EAST OF THE SOUTHEAST CORNER OF A BARN AND
 JV6662'0.3 M (1.0 FT) NORTH OF A WITNESS POST.
 JV6662
 JV6662                          STATION RECOVERY (2008)
 JV6662
 JV6662'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV6662'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8919 ***********************************************************************
 HV8919  DESIGNATION -  B 195
 HV8919  PID         -  HV8919
 HV8919  STATE/COUNTY-  MD/DORCHESTER
 HV8919  COUNTRY     -  US
 HV8919  USGS QUAD   -  GOLDEN HILL (2016)
 HV8919
 HV8919                         *CURRENT SURVEY CONTROL
 HV8919  ______________________________________________________________________
 HV8919* NAD 83(1986) POSITION- 38 26 48.6    (N) 076 07 38.6    (W)   HD_HELD2
 HV8919* NAVD 88 ORTHO HEIGHT -     0.698 (meters)        2.29  (feet) ADJUSTED
 HV8919  ______________________________________________________________________
 HV8919  GEOID HEIGHT    -        -35.148 (meters)                     GEOID18
 HV8919  DYNAMIC HEIGHT  -          0.698 (meters)        2.29  (feet) COMP
 HV8919  MODELED GRAVITY -    980,005.9   (mgal)                       NAVD 88
 HV8919
 HV8919  VERT ORDER      -  SECOND    CLASS I
 HV8919
 HV8919.The horizontal coordinates were established by autonomous hand held GPS
 HV8919.observations and have an estimated accuracy of +/- 10 meters.
 HV8919
 HV8919.The orthometric height was determined by differential leveling and
 HV8919.adjusted by the NATIONAL GEODETIC SURVEY
 HV8919.in August 1994.
 HV8919
 HV8919.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8919.GEOID18 height accuracy estimate available here.
 HV8919
 HV8919.Click photographs - Photos may exist for this station.
 HV8919
 HV8919.The dynamic height is computed by dividing the NAVD 88
 HV8919.geopotential number by the normal gravity value computed on the
 HV8919.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8919.degrees latitude (g = 980.6199 gals.).
 HV8919
 HV8919.The modeled gravity was interpolated from observed gravity values.
 HV8919
 HV8919;                    North         East    Units  Estimated Accuracy
 HV8919;SPC MD       -    86,966.      476,173.      MT  (+/- 10 meters HH2 GPS)
 HV8919
 HV8919_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0162055995(NAD 83)
 HV8919
 HV8919                          SUPERSEDED SURVEY CONTROL
 HV8919
 HV8919.No superseded survey control is available for this station.
 HV8919
 HV8919_MARKER: DV = VERTICAL CONTROL DISK
 HV8919_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8919_STAMPING: B 195 1990
 HV8919_MARK LOGO: NGS
 HV8919_PROJECTION: RECESSED 5 CENTIMETERS
 HV8919_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8919_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8919+STABILITY: SURFACE MOTION
 HV8919_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8919+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2014
 HV8919
 HV8919  HISTORY     - Date     Condition        Report By
 HV8919  HISTORY     - 1990     MONUMENTED       MDSHA
 HV8919  HISTORY     - 20060105 GOOD             USPSQD
 HV8919  HISTORY     - 20070218 MARK NOT FOUND   USPSQD
 HV8919  HISTORY     - 20140320 GOOD             ARCSHE
 HV8919
 HV8919                          STATION DESCRIPTION
 HV8919
 HV8919'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HV8919'0.94 KM (0.58 MI) SOUTHEAST ALONG KEY WALLACE ROAD FROM INTERSECTION
 HV8919'OF STATE HIGHWAY 335, 64.7 FT (19.7 M) SOUTHWEST OF THE CENTERLINE OF
 HV8919'KEY WALLACE ROAD, 2.4 FT (0.7 M) SOUTHWEST OF A POWER POLE WITH NO
 HV8919'NUMBER, 105.0 FT (32.0 M) SOUTHEAST OF THE CENTERLINE OF A DITCH, 1.4
 HV8919'FT (0.4 M) NORTHEAST OF A WITNESS POST, SET IN THE TOP OF A 1.0 FT
 HV8919'(0.3 M) ROUND CONCRETE POST FLUSH WITH THE GROUND.
 HV8919
 HV8919                          STATION RECOVERY (2006)
 HV8919
 HV8919'RECOVERY NOTE BY US POWER SQUADRON 2006 (NNH)
 HV8919'THERE IS NO WITNESS POST. POLE IS NUMBERED 511, CHOPTANK, 105, AND IS
 HV8919'HELD BY 2 GUY WIRES.
 HV8919
 HV8919                          STATION RECOVERY (2007)
 HV8919
 HV8919'RECOVERY NOTE BY US POWER SQUADRON 2007 (NH)
 HV8919'THERE HAS BEEN A NEW SET OF POLES PUT IN. THE POLE AT THIS LOCATION IS
 HV8919'STILL 511, THERE IS A PILE OF DIRT AT THE BASE. THERE IS NO METAL DISC
 HV8919'WITHI 1 FOOT OF THE SURFACE AT THIS LOCATION.
 HV8919
 HV8919                          STATION RECOVERY (2014)
 HV8919
 HV8919'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV8919'IT IS 118.8 FT (36.2 M) SOUTHWEST AND ACROSS THE ROAD FROM THE
 HV8919'WESTERLY ONE OF TWO IRON PIPE GATE POSTS AND 71.5 FT (21.8 M) WEST OF
 HV8919'POWER LINE POLE NUMBER 511/105.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4388 ***********************************************************************
 JU4388  DESIGNATION -  B 196
 JU4388  PID         -  JU4388
 JU4388  STATE/COUNTY-  MD/QUEEN ANNES
 JU4388  COUNTRY     -  US
 JU4388  USGS QUAD   -  CHURCH HILL (2017)
 JU4388
 JU4388                         *CURRENT SURVEY CONTROL
 JU4388  ______________________________________________________________________
 JU4388* NAD 83(1986) POSITION- 39 10 34.7    (N) 075 54 59.9    (W)   HD_HELD2
 JU4388* NAVD 88 ORTHO HEIGHT -    23.425 (meters)       76.85  (feet) ADJUSTED
 JU4388  ______________________________________________________________________
 JU4388  GEOID HEIGHT    -        -33.688 (meters)                     GEOID18
 JU4388  DYNAMIC HEIGHT  -         23.412 (meters)       76.81  (feet) COMP
 JU4388  MODELED GRAVITY -    980,103.3   (mgal)                       NAVD 88
 JU4388
 JU4388  VERT ORDER      -  SECOND    CLASS I
 JU4388
 JU4388.The horizontal coordinates were established by autonomous hand held GPS
 JU4388.observations and have an estimated accuracy of +/- 10 meters.
 JU4388
 JU4388.The orthometric height was determined by differential leveling and
 JU4388.adjusted by the NATIONAL GEODETIC SURVEY
 JU4388.in July 1996.
 JU4388
 JU4388.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4388.GEOID18 height accuracy estimate available here.
 JU4388
 JU4388.Click photographs - Photos may exist for this station.
 JU4388
 JU4388.The dynamic height is computed by dividing the NAVD 88
 JU4388.geopotential number by the normal gravity value computed on the
 JU4388.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4388.degrees latitude (g = 980.6199 gals.).
 JU4388
 JU4388.The modeled gravity was interpolated from observed gravity values.
 JU4388
 JU4388;                    North         East    Units  Estimated Accuracy
 JU4388;SPC MD       -   168,134.      493,609.      MT  (+/- 10 meters HH2 GPS)
 JU4388
 JU4388_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2082336741(NAD 83)
 JU4388
 JU4388                          SUPERSEDED SURVEY CONTROL
 JU4388
 JU4388.No superseded survey control is available for this station.
 JU4388
 JU4388_MARKER: DD = SURVEY DISK
 JU4388_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4388_STAMPING: B 196 1991
 JU4388_MARK LOGO: MDSHA
 JU4388_PROJECTION: RECESSED 10 CENTIMETERS
 JU4388_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4388_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4388+STABILITY: SURFACE MOTION
 JU4388_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4388+SATELLITE: SATELLITE OBSERVATIONS - February 22, 2013
 JU4388
 JU4388  HISTORY     - Date     Condition        Report By
 JU4388  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4388  HISTORY     - 20020301 GOOD             USPSQD
 JU4388  HISTORY     - 20130222 GOOD             ARCSHE
 JU4388
 JU4388                          STATION DESCRIPTION
 JU4388
 JU4388'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4388'THE MARKER IS LOCATED ABOUT 6.0 MI (9.7 KM) NORTHEAST OF PRICE, 4.5 MI
 JU4388'(7.2 KM) NORTHEAST OF CHURCH HILL, 1.5 MI (2.4 KM) SOUTHEAST OF DUDLEY
 JU4388'CORNERS AND ALONG THE SOUTHEAST SIDE OF U.S. HIGHWAY 301.  IT IS ON
 JU4388'ROAD RIGHT-OF-WAY.
 JU4388'
 JU4388'TO REACH FROM THE POST OFFICE IN PRICE, GO WEST ON STATE HIGHWAY 405
 JU4388'FOR 0.1 MI (0.2 KM) TO U.S. HIGHWAY 301.  TURN RIGHT AND GO NORTHERLY
 JU4388'ON U.S. HIGHWAY 301 FOR 5.9 MI (9.5 KM) TO THE MARKER ON THE RIGHT.
 JU4388'
 JU4388'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JU4388'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS
 JU4388'RECESSED 0.15 FT (0.05 M) BELOW THE SURFACE OF THE GROUND.  IT IS 63.5
 JU4388'FT (19.4 M) EAST OF THE CENTER OF THE NORTHBOUND LANE OF U.S. HIGHWAY
 JU4388'301, 31.5 FT (9.6 M) SOUTHEAST OF THE EAST POLE OF A HIGHWAY ROAD SIGN
 JU4388'READING WILMINGTON 48, 38 FT (11.6 M) NORTH OF OF THE CORNER OF A
 JU4388'CULTIVATED FIELD, 7 FT (2.1 M) NORTHWEST OF THE WEST POST OF A
 JU4388'BILLBOARD, 96.0 FT (29.3 M) NORTHWEST OF A POWERLINE POLE NUMBERED
 JU4388'11-BB 9 3, 40.4 FT (12.3 M) SOUTH OF THE MOST SOUTHERLY I BEAM FOR A
 JU4388'GUARDRAIL AND ABOUT 1 FT (0.3 M) LOWER THAN THE ROAD.
 JU4388
 JU4388                          STATION RECOVERY (2002)
 JU4388
 JU4388'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4388'REFERENCED HIGHWAY ROAD SIGN DOES NOT EXIST. REFERENCED GUARD RAIL
 JU4388'REMOVED, I BEAMS REMAIN. 6.9 FT. N OF A CARSONITE WITNESS POST. .2
 JU4388'MILES NE ALONG HIGHWAY 301 FROM THE INTERSECTION WITH HIGHWAY 300.
 JU4388'REFERENCED POWER POLE BRANDED 2-94 SP 2-50.
 JU4388
 JU4388                          STATION RECOVERY (2013)
 JU4388
 JU4388'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU4388'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6913 ***********************************************************************
 JV6913  DESIGNATION -  B 197
 JV6913  PID         -  JV6913
 JV6913  STATE/COUNTY-  MD/C OF BALTIMORE
 JV6913  COUNTRY     -  US
 JV6913  USGS QUAD   -  BALTIMORE EAST (2016)
 JV6913
 JV6913                         *CURRENT SURVEY CONTROL
 JV6913  ______________________________________________________________________
 JV6913* NAD 83(1986) POSITION- 39 16 56.     (N) 076 32 59.     (W)   SCALED
 JV6913* NAVD 88 ORTHO HEIGHT -    20.166 (meters)       66.16  (feet) ADJUSTED
 JV6913  ______________________________________________________________________
 JV6913  GEOID HEIGHT    -        -32.886 (meters)                     GEOID18
 JV6913  DYNAMIC HEIGHT  -         20.155 (meters)       66.13  (feet) COMP
 JV6913  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV6913
 JV6913  VERT ORDER      -  SECOND    CLASS I
 JV6913
 JV6913.The horizontal coordinates were scaled from a map and have
 JV6913.an estimated accuracy of +/- 6 seconds.
 JV6913
 JV6913.The orthometric height was determined by differential leveling and
 JV6913.adjusted by the NATIONAL GEODETIC SURVEY
 JV6913.in June 1995.
 JV6913
 JV6913.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6913.GEOID18 height accuracy estimate available here.
 JV6913
 JV6913.Click photographs - Photos may exist for this station.
 JV6913
 JV6913.The dynamic height is computed by dividing the NAVD 88
 JV6913.geopotential number by the normal gravity value computed on the
 JV6913.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6913.degrees latitude (g = 980.6199 gals.).
 JV6913
 JV6913.The modeled gravity was interpolated from observed gravity values.
 JV6913
 JV6913;                    North         East    Units  Estimated Accuracy
 JV6913;SPC MD       -   179,430.      438,850.      MT  (+/- 180 meters Scaled)
 JV6913
 JV6913_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ663492(NAD 83)
 JV6913
 JV6913                          SUPERSEDED SURVEY CONTROL
 JV6913
 JV6913.No superseded survey control is available for this station.
 JV6913
 JV6913_MARKER: DD = SURVEY DISK
 JV6913_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV6913+WITH SETTING: PAVEMENT
 JV6913_SP_SET: OVERHEAD SIGN BASE
 JV6913_STAMPING: B 197 1991
 JV6913_MARK LOGO: MDSHA
 JV6913_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6913_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6913+STABILITY: SURFACE MOTION
 JV6913
 JV6913  HISTORY     - Date     Condition        Report By
 JV6913  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6913
 JV6913                          STATION DESCRIPTION
 JV6913
 JV6913'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6913'THE MARKER IS LOCATED IN THE SOUTHEAST PART OF BALTIMORE, JUST WEST
 JV6913'OF MT CARMEL CEMETERY AND NEAR INTERSTATE HIGHWAY 95 AT THE ODONNELL
 JV6913'STREET ENTRANCE RAMP.  TO REACH FROM THE INTERSTATE HIGHWAY 95
 JV6913'NORTHBOUND TOLL PLAZA WHICH IS LOCATED ON THE NORTHEAST SIDE OF THE
 JV6913'FORT MCHENRY TUNNEL, GO NORTHEAST ON INTERSTATE HIGHWAY 95 FOR 1.3 MI
 JV6913'(2.1 KM) TO THE MARKER ON THE RIGHT, A MARYLAND STATE HIGHWAY
 JV6913'ADMINISTRATION SURVEY DISK IN THE CONCRETE BASE FOR A OVERHEAD
 JV6913'HIGHWAY SIGN FOR EXITS 58, 59 AND 60, 395 FT (120.4 M) NORTHEAST OF
 JV6913'ODONNELL STREET, 14.5 FT (4.4 M) SOUTHEAST OF THE CENTER OF A RAMP
 JV6913'PRESENTLY UNDER CONSTRUCTION, 1.3 FT (0.4 M) SOUTHEAST FROM THE BACK
 JV6913'OF A JERSEY BARRIER WALL, 36 FT (11.0 M) NORTHWEST OF THE CENTER OF
 JV6913'THE NORTHBOUND RAMP LEADING FROM ODONNELL STREET ONTO NORTHBOUND
 JV6913'INTERSTATE HIGHWAY 95, 88 FT (26.8 M) SOUTHWEST OF THE CENTER OF A
 JV6913'MANHOLE AND ABOUT 2.5 FT (0.8 M) HIGHER THAN THE ROAD SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4256 ***********************************************************************
 JU4256  DESIGNATION -  B 198
 JU4256  PID         -  JU4256
 JU4256  STATE/COUNTY-  MD/CECIL
 JU4256  COUNTRY     -  US
 JU4256  USGS QUAD   -  NEWARK WEST (2016)
 JU4256
 JU4256                         *CURRENT SURVEY CONTROL
 JU4256  ______________________________________________________________________
 JU4256* NAD 83(1986) POSITION- 39 38 40.63   (N) 075 50 02.06   (W)   HD_HELD1
 JU4256* NAVD 88 ORTHO HEIGHT -    38.874 (meters)      127.54  (feet) ADJUSTED
 JU4256  ______________________________________________________________________
 JU4256  GEOID HEIGHT    -        -33.088 (meters)                     GEOID18
 JU4256  DYNAMIC HEIGHT  -         38.855 (meters)      127.48  (feet) COMP
 JU4256  MODELED GRAVITY -    980,142.9   (mgal)                       NAVD 88
 JU4256
 JU4256  VERT ORDER      -  SECOND    CLASS I
 JU4256
 JU4256.The horizontal coordinates were determined by differentially corrected
 JU4256.hand held GPS observations or other comparable positioning techniques
 JU4256.and have an estimated accuracy of +/- 3 meters.
 JU4256
 JU4256.The orthometric height was determined by differential leveling and
 JU4256.adjusted by the NATIONAL GEODETIC SURVEY
 JU4256.in June 1995.
 JU4256
 JU4256.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4256.GEOID18 height accuracy estimate available here.
 JU4256
 JU4256.Click photographs - Photos may exist for this station.
 JU4256
 JU4256.The dynamic height is computed by dividing the NAVD 88
 JU4256.geopotential number by the normal gravity value computed on the
 JU4256.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4256.degrees latitude (g = 980.6199 gals.).
 JU4256
 JU4256.The modeled gravity was interpolated from observed gravity values.
 JU4256
 JU4256;                    North         East    Units  Estimated Accuracy
 JU4256;SPC MD       -   220,211.2     500,092.9     MT  (+/- 3 meters HH1 GPS) 
 JU4256
 JU4256_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2844988646(NAD 83)
 JU4256
 JU4256                          SUPERSEDED SURVEY CONTROL
 JU4256
 JU4256.No superseded survey control is available for this station.
 JU4256
 JU4256_MARKER: DD = SURVEY DISK
 JU4256_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JU4256+WITH SETTING: PAVEMENT
 JU4256_SP_SET: HIGHWAY SIGN BASE
 JU4256_STAMPING: B 198 1991
 JU4256_MARK LOGO: MDSHA
 JU4256_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU4256_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4256_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU4256+SATELLITE: SATELLITE OBSERVATIONS - February 06, 2013
 JU4256
 JU4256  HISTORY     - Date     Condition        Report By
 JU4256  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4256  HISTORY     - 20130206 GOOD             INDIV
 JU4256
 JU4256                          STATION DESCRIPTION
 JU4256
 JU4256'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4256'THE MARKER IS LOCATED ABOUT 2.5 MI (4.0 KM) WEST OF THE
 JU4256'MARYLAND-DELAWARE STATE BOUNDARY, 3 MI (4.8 KM) NORTH OF ELKTON AND
 JU4256'ALONG THE SOUTH SIDE OF THE NORTHBOUND LANE OF INTERSTATE HIGHWAY 95.
 JU4256'IT IS ON INTERSTATE HIGHWAY 95 RIGHT-OF-WAY.  TO REACH FROM THE
 JU4256'INTERSECTION OF INTERSTATE HIGHWAY 95 AND STATE HIGHWAY 222, GO
 JU4256'NORTHEAST ON INTERSTATE HIGHWAY 95 FOR 12.7 MI (20.4 KM) TO THE
 JU4256'MARKER ON THE RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY
 JU4256'DISK IN THE CONCRETE BASE OF A HIGHWAY SIGN FOR LODGING AT EXIT 109A
 JU4256'.  IT IS 11 FT (3.4 M) SOUTH OF THE MOST SOUTH EDGE OF THE PAVED
 JU4256'SOUTH SHOULDER ALONG THE NORTHBOUND LANE OF INTERSTATE HIGHWAY 95, 8
 JU4256'FT (2.4 M) SOUTHWEST OF A GUARDRAIL, 48.5 FT (14.8 M) SOUTHEAST OF
 JU4256'THE CENTER OF A CONCRETE HEADWALL, 84.5 FT (25.8 M) NORTHWEST OF A
 JU4256'HIGHWAY MILE MARKER NUMBERED M397N AND ABOUT 2 FT (0.6 M) LOWER THAN
 JU4256'THE SURFACE OF INTERSTATE HIGHWAY 95.
 JU4256
 JU4256                          STATION RECOVERY (2013)
 JU4256
 JU4256'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (DRD)
 JU4256'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2781 ***********************************************************************
 HU2781  DESIGNATION -  B 199
 HU2781  PID         -  HU2781
 HU2781  STATE/COUNTY-  MD/WORCESTER
 HU2781  COUNTRY     -  US
 HU2781  USGS QUAD   -  BERLIN (2016)
 HU2781
 HU2781                         *CURRENT SURVEY CONTROL
 HU2781  ______________________________________________________________________
 HU2781* NAD 83(2011) POSITION- 38 20 14.63254(N) 075 08 31.48753(W)   ADJUSTED
 HU2781* NAD 83(2011) ELLIP HT-   -32.721 (meters)        (03/04/17)   ADJUSTED
 HU2781* NAD 83(2011) EPOCH   -  2010.00
 HU2781* NAVD 88 ORTHO HEIGHT -     3.305 (meters)       10.84  (feet) ADJUSTED
 HU2781  ______________________________________________________________________
 HU2781  GEOID HEIGHT    -        -36.035 (meters)                     GEOID18
 HU2781  NAD 83(2011) X  -  1,284,489.336 (meters)                     COMP
 HU2781  NAD 83(2011) Y  - -4,841,773.446 (meters)                     COMP
 HU2781  NAD 83(2011) Z  -  3,934,867.450 (meters)                     COMP
 HU2781  LAPLACE CORR    -         -0.61  (seconds)                    DEFLEC18
 HU2781  DYNAMIC HEIGHT  -          3.303 (meters)       10.84  (feet) COMP
 HU2781  MODELED GRAVITY -    980,008.0   (mgal)                       NAVD 88
 HU2781
 HU2781  VERT ORDER      -  SECOND    CLASS I
 HU2781
 HU2781  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2781  Standards:
 HU2781         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2781            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2781  -------------------------------------------------------------------
 HU2781  NETWORK    0.48   0.92           0.21   0.18   0.47     -0.09348572
 HU2781  -------------------------------------------------------------------
 HU2781  Click here for local accuracies and other accuracy information.
 HU2781
 HU2781.The horizontal coordinates were established by GPS observations
 HU2781.and adjusted by the ARCHER-SHEE LAND SURVEYING in March 2017.
 HU2781
 HU2781.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2781.been affixed to the stable North American tectonic plate. See 
 HU2781.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2781
 HU2781.The horizontal coordinates are valid at the epoch date displayed above
 HU2781.which is a decimal equivalence of Year/Month/Day.
 HU2781
 HU2781.The orthometric height was determined by differential leveling and
 HU2781.adjusted by the NATIONAL GEODETIC SURVEY
 HU2781.in November 1994.
 HU2781
 HU2781.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2781.GEOID18 height accuracy estimate available here.
 HU2781
 HU2781.Click photographs - Photos may exist for this station.
 HU2781
 HU2781.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2781
 HU2781.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2781
 HU2781.The ellipsoidal height was determined by GPS observations
 HU2781.and is referenced to NAD 83.
 HU2781
 HU2781.The dynamic height is computed by dividing the NAVD 88
 HU2781.geopotential number by the normal gravity value computed on the
 HU2781.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2781.degrees latitude (g = 980.6199 gals.).
 HU2781
 HU2781.The modeled gravity was interpolated from observed gravity values.
 HU2781
 HU2781. The following values were computed from the NAD 83(2011) position.
 HU2781
 HU2781;                    North         East     Units Scale Factor Converg.
 HU2781;SPC MD       -    76,106.994   562,422.977   MT  0.99999370   +1 09 57.9
 HU2781;SPC MD       -   249,694.36  1,845,216.05   sFT  0.99999370   +1 09 57.9
 HU2781;UTM  18      - 4,243,260.648   487,583.133   MT  0.99960190   -0 05 17.3
 HU2781
 HU2781!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2781!SPC MD       -   1.00000513  x   0.99999370  =   0.99999883
 HU2781!UTM  18      -   1.00000513  x   0.99960190  =   0.99960703
 HU2781
 HU2781_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8758343260(NAD 83)
 HU2781
 HU2781                          SUPERSEDED SURVEY CONTROL
 HU2781
 HU2781  NGVD 29 (02/25/92)    3.550  (m)           11.65   (f) ADJUSTED    2 1
 HU2781
 HU2781.Superseded values are not recommended for survey control.
 HU2781
 HU2781.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2781.See file dsdata.pdf to determine how the superseded data were derived.
 HU2781
 HU2781_MARKER: DV = VERTICAL CONTROL DISK
 HU2781_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU2781_SP_SET: INLET
 HU2781_STAMPING: B 199 1991
 HU2781_MARK LOGO: NGS
 HU2781_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2781_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2781_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2781+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2016
 HU2781
 HU2781  HISTORY     - Date     Condition        Report By
 HU2781  HISTORY     - 1991     MONUMENTED       MDSHA
 HU2781  HISTORY     - 20020305 GOOD             USPSQD
 HU2781  HISTORY     - 20031228 GOOD             USPSQD
 HU2781  HISTORY     - 20040409 GOOD             MDSHA
 HU2781  HISTORY     - 20051220 GOOD             USPSQD
 HU2781  HISTORY     - 20101003 GOOD             NGS
 HU2781  HISTORY     - 20160220 GOOD             ARCSHE
 HU2781
 HU2781                          STATION DESCRIPTION
 HU2781
 HU2781'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2781'THE MARK IS LOCATED ABOUT 4.3 MI (6.9 KM) EAST-NORTHEAST OF BERLIN,
 HU2781'3.2 MI (5.1 KM) WEST OF OCEAN CITY AND ON ROAD RIGHT-OF-WAY.  TO
 HU2781'REACH FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN,
 HU2781'GO EAST ON U.S. HIGHWAY 50 FOR 4.1 MI (6.6 KM) TO THE INTERSECTION
 HU2781'OF JERRY MACK ROAD AND THE MARK ON THE LEFT IN THE MEDIAN.  IT IS
 HU2781'38.7 FT (11.8 M) NORTH OF THE CENTER LINE OF THE EASTBOUND LANES OF
 HU2781'THE HIGHWAY, 37.5 FT (11.4 M) WEST OF THE CENTER LINE OF JERRY MACK
 HU2781'ROAD, 35.0 FT (10.7 M) SOUTH OF THE CENTER LINE OF THE WESTBOUND
 HU2781'LANES OF THE HIGHWAY, 12.5 FT (3.8 M) WEST-NORTHWEST OF A CARSONITE
 HU2781'WITNESS POST AND SET IN A DRILL HOLE IN THE TOP OF A CONCRETE
 HU2781'DRAINAGE INLET.
 HU2781
 HU2781                          STATION RECOVERY (2002)
 HU2781
 HU2781'RECOVERY NOTE BY US POWER SQUADRON 2002 (PMF)
 HU2781'THE MARK IS ABOUT 4.3 MI EAST-NORTHEAST OF BERLIN.  FROM THE
 HU2781'INTERSECTION OF US 50/113, GO EAST ON US 50 FOR 3.9 MI TO AN EAST/WEST
 HU2781'LANE CROSSOVER.  THE MARK IS 37.5 FT  WEST OF THE LANE CROSSOVER, 38.7
 HU2781'FT NORTH OF THE CENTER LINE OF THE EAST BOUND LANES OF US 50 AND 35.0
 HU2781'FT SOUTH OF THE CENTER LINE OF THE WEST BOUND LANES OF US 50.  THE
 HU2781'MARK IS IN THE TOP OF A CONCRETE DRAINAGE INLET.
 HU2781
 HU2781                          STATION RECOVERY (2003)
 HU2781
 HU2781'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU2781'RECOVERED IN GOOD CONDITION.
 HU2781
 HU2781                          STATION RECOVERY (2004)
 HU2781
 HU2781'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (MRA)
 HU2781'RECOVERED IN GOOD CONDITION.
 HU2781
 HU2781                          STATION RECOVERY (2005)
 HU2781
 HU2781'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU2781'RECOVERED IN GOOD CONDITION.
 HU2781
 HU2781                          STATION RECOVERY (2010)
 HU2781
 HU2781'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HU2781'MARK IS SET IN THE NORTHEAST CORNER OF THE DRAINAGE INLET.
 HU2781
 HU2781                          STATION RECOVERY (2016)
 HU2781
 HU2781'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MRA)
 HU2781'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0039 ***********************************************************************
 JV0039  DESIGNATION -  B 20
 JV0039  PID         -  JV0039
 JV0039  STATE/COUNTY-  MD/CECIL
 JV0039  COUNTRY     -  US
 JV0039  USGS QUAD   -  CONOWINGO DAM (2016)
 JV0039
 JV0039                         *CURRENT SURVEY CONTROL
 JV0039  ______________________________________________________________________
 JV0039* NAD 83(1986) POSITION- 39 39 34.     (N) 076 09 12.     (W)   SCALED
 JV0039* NAVD 88 ORTHO HEIGHT -    27.473 (meters)       90.13  (feet) ADJUSTED
 JV0039  ______________________________________________________________________
 JV0039  GEOID HEIGHT    -        -32.929 (meters)                     GEOID18
 JV0039  DYNAMIC HEIGHT  -         27.460 (meters)       90.09  (feet) COMP
 JV0039  MODELED GRAVITY -    980,147.3   (mgal)                       NAVD 88
 JV0039
 JV0039  VERT ORDER      -  FIRST     CLASS II
 JV0039
 JV0039.The horizontal coordinates were scaled from a map and have
 JV0039.an estimated accuracy of +/- 6 seconds.
 JV0039
 JV0039.The orthometric height was determined by differential leveling and
 JV0039.adjusted by the NATIONAL GEODETIC SURVEY
 JV0039.in June 1991.
 JV0039
 JV0039.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0039.GEOID18 height accuracy estimate available here.
 JV0039
 JV0039.Click photographs - Photos may exist for this station.
 JV0039
 JV0039.The dynamic height is computed by dividing the NAVD 88
 JV0039.geopotential number by the normal gravity value computed on the
 JV0039.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0039.degrees latitude (g = 980.6199 gals.).
 JV0039
 JV0039.The modeled gravity was interpolated from observed gravity values.
 JV0039
 JV0039;                    North         East    Units  Estimated Accuracy
 JV0039;SPC MD       -   221,560.      472,660.      MT  (+/- 180 meters Scaled)
 JV0039
 JV0039_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ010905(NAD 83)
 JV0039
 JV0039                          SUPERSEDED SURVEY CONTROL
 JV0039
 JV0039  NGVD 29 (11/26/84)   27.729  (m)           90.97   (f) ADJUSTED    1 2
 JV0039
 JV0039.Superseded values are not recommended for survey control.
 JV0039
 JV0039.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0039.See file dsdata.pdf to determine how the superseded data were derived.
 JV0039
 JV0039_MARKER: DB = BENCH MARK DISK
 JV0039_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0039_SP_SET: CURB
 JV0039_STAMPING: B 20 1955
 JV0039_MARK LOGO: CGS
 JV0039_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0039_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0039+SATELLITE: SATELLITE OBSERVATIONS - November 01, 1989
 JV0039
 JV0039  HISTORY     - Date     Condition        Report By
 JV0039  HISTORY     - 1955     MONUMENTED       CGS
 JV0039  HISTORY     - 1979     GOOD             NGS
 JV0039  HISTORY     - 19891101 GOOD             NGS
 JV0039
 JV0039                          STATION DESCRIPTION
 JV0039
 JV0039'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0039'1.2 MI SE FROM CONOWINGO DAM.
 JV0039'ABOUT 1.15 MILES SOUTHEAST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV0039'THE STATION AT CONOWINGO DAM, ABOUT 0.15 MILE SOUTH OF MILE POST
 JV0039'9, AT SOUTH END OF CONCRETE ARCH BRIDGE OVER OCTORARO CREEK, IN
 JV0039'THE TOP AND 3.7 FEET NORTH OF SOUTH END OF WEST CONCRETE RAIL
 JV0039'FOOTING OF BRIDGE, 18 FEET WEST OF WEST RAIL, 3 FEET NORTH OF
 JV0039'SOUTH END OF CONCRETE BANISTER, 0.6 FOOT EAST OF EAST FACE OF
 JV0039'WEST BANISTER AND 1 1/2 FEET BELOW LEVEL OF TRACK.
 JV0039
 JV0039                          STATION RECOVERY (1979)
 JV0039
 JV0039'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0039'RECOVERED IN GOOD CONDITION.
 JV0039
 JV0039                          STATION RECOVERY (1989)
 JV0039
 JV0039'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0039'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  1.8 KM
 JV0039'(1.10 MI) SOUTHERLY ALONG THE CONRAIL RAILROAD FROM ITS JUNCTION WITH
 JV0039'U.S. HIGHWAY 1 AT THE NORTH END OF CONOWINGO DAM, IN TOP OF AND 1.1
 JV0039'M (3.6 FT) NORTH OF THE SOUTH END OF THE WEST CONCRETE CURB OF THE
 JV0039'SOUTH ABUTMENT OF A RAILROAD BRIDGE SPANNING OCTORARO CREEK, 5.5 M
 JV0039'(18.0 FT) WEST OF THE NEAR RAIL, 0.6 M (2.0 FT) BELOW THE LEVEL OF
 JV0039'THE TRACKS, AND 0.2 M (0.7 FT) EAST OF THE EAST FACE OF THE WEST
 JV0039'BANISTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 UA0027 ***********************************************************************
 UA0027  DESIGNATION -  B 200
 UA0027  PID         -  UA0027
 UA0027  STATE/COUNTY-  MD/PRINCE GEORGES
 UA0027  COUNTRY     -  US
 UA0027  USGS QUAD   -  ANACOSTIA (2016)
 UA0027
 UA0027                         *CURRENT SURVEY CONTROL
 UA0027  ______________________________________________________________________
 UA0027* NAD 83(1986) POSITION- 38 48 38.     (N) 076 52 47.     (W)   SCALED
 UA0027* NAVD 88 ORTHO HEIGHT -    83.951 (meters)      275.43  (feet) ADJUSTED
 UA0027  ______________________________________________________________________
 UA0027  GEOID HEIGHT    -        -32.532 (meters)                     GEOID18
 UA0027  DYNAMIC HEIGHT  -         83.904 (meters)      275.27  (feet) COMP
 UA0027  MODELED GRAVITY -    980,068.6   (mgal)                       NAVD 88
 UA0027
 UA0027  VERT ORDER      -  FIRST     CLASS II
 UA0027
 UA0027.This mark is at Andrews Afb Airport (ADW)
 UA0027
 UA0027.The horizontal coordinates were scaled from a map and have
 UA0027.an estimated accuracy of +/- 6 seconds.
 UA0027
 UA0027.The orthometric height was determined by differential leveling and
 UA0027.adjusted by the NATIONAL GEODETIC SURVEY
 UA0027.in August 1994.
 UA0027
 UA0027.Significant digits in the geoid height do not necessarily reflect accuracy.
 UA0027.GEOID18 height accuracy estimate available here.
 UA0027
 UA0027.Click photographs - Photos may exist for this station.
 UA0027
 UA0027.The dynamic height is computed by dividing the NAVD 88
 UA0027.geopotential number by the normal gravity value computed on the
 UA0027.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 UA0027.degrees latitude (g = 980.6199 gals.).
 UA0027
 UA0027.The modeled gravity was interpolated from observed gravity values.
 UA0027
 UA0027;                    North         East    Units  Estimated Accuracy
 UA0027;SPC MD       -   126,980.      410,450.      MT  (+/- 180 meters Scaled)
 UA0027
 UA0027_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH367974(NAD 83)
 UA0027
 UA0027                          SUPERSEDED SURVEY CONTROL
 UA0027
 UA0027.No superseded survey control is available for this station.
 UA0027
 UA0027_MARKER: DV = VERTICAL CONTROL DISK
 UA0027_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 UA0027+WITH SETTING: PAVEMENT
 UA0027_SP_SET: TRANSFORMER FOUNDATION
 UA0027_STAMPING: B 200 1994
 UA0027_MARK LOGO: NGS
 UA0027_MAGNETIC: N = NO MAGNETIC MATERIAL
 UA0027_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 UA0027+STABILITY: SURFACE MOTION
 UA0027
 UA0027  HISTORY     - Date     Condition        Report By
 UA0027  HISTORY     - 1994     MONUMENTED       NGS
 UA0027
 UA0027                          STATION DESCRIPTION
 UA0027
 UA0027'DESCRIBED BY NATIONAL GEODETIC SURVEY 1994
 UA0027'AT ANDREWS AIR FORCE BASE, 1735 FIRST STREET, IN FRONT OF THE
 UA0027'PRECISION MEASUREMENT EQUIPMENT LABORATORY.  SET IN THE SOUTHEAST
 UA0027'CORNER OF A 2.15 X 1.5 M (4.9 FT) CONCRETE FOUNDATION OF A
 UA0027'TRANSFORMER.  13 M (42.7 FT) WEST FROM THE CENTER LINE OF FIRST
 UA0027'STREET, 8.6 M (28.2 FT) NE FROM THE NE END OF THE WING WALL TO THE
 UA0027'LABORATORY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DE9126 ***********************************************************************
 DE9126  DESIGNATION -  B 201
 DE9126  PID         -  DE9126
 DE9126  STATE/COUNTY-  MD/SOMERSET
 DE9126  COUNTRY     -  US
 DE9126  USGS QUAD   -  CRISFIELD (2016)
 DE9126
 DE9126                         *CURRENT SURVEY CONTROL
 DE9126  ______________________________________________________________________
 DE9126* NAD 83(1986) POSITION- 37 59 57.8    (N) 075 50 35.6    (W)   HD_HELD2
 DE9126* NAVD 88 ORTHO HEIGHT -     1.103 (meters)        3.62  (feet) ADJUSTED
 DE9126  ______________________________________________________________________
 DE9126  GEOID HEIGHT    -        -36.078 (meters)                     GEOID18
 DE9126  DYNAMIC HEIGHT  -          1.103 (meters)        3.62  (feet) COMP
 DE9126  MODELED GRAVITY -    979,973.7   (mgal)                       NAVD 88
 DE9126
 DE9126  VERT ORDER      -  SECOND    CLASS I
 DE9126
 DE9126.The horizontal coordinates were established by autonomous hand held GPS
 DE9126.observations and have an estimated accuracy of +/- 10 meters.
 DE9126
 DE9126.The orthometric height was determined by differential leveling and
 DE9126.adjusted by the NATIONAL GEODETIC SURVEY
 DE9126.in February 2003.
 DE9126
 DE9126.Significant digits in the geoid height do not necessarily reflect accuracy.
 DE9126.GEOID18 height accuracy estimate available here.
 DE9126
 DE9126.Click photographs - Photos may exist for this station.
 DE9126
 DE9126.The dynamic height is computed by dividing the NAVD 88
 DE9126.geopotential number by the normal gravity value computed on the
 DE9126.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DE9126.degrees latitude (g = 980.6199 gals.).
 DE9126
 DE9126.The modeled gravity was interpolated from observed gravity values.
 DE9126
 DE9126;                    North         East    Units  Estimated Accuracy
 DE9126;SPC MD       -    37,578.      501,607.      MT  (+/- 10 meters HH2 GPS)
 DE9126
 DE9126_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2596606082(NAD 83)
 DE9126
 DE9126                          SUPERSEDED SURVEY CONTROL
 DE9126
 DE9126.No superseded survey control is available for this station.
 DE9126
 DE9126_MARKER: DV = VERTICAL CONTROL DISK
 DE9126_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DE9126_SP_SET: CULVERT HEADWALL
 DE9126_STAMPING: B 201 2002
 DE9126_MARK LOGO: NGS
 DE9126_MAGNETIC: N = NO MAGNETIC MATERIAL
 DE9126_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DE9126+STABILITY: SURFACE MOTION
 DE9126
 DE9126  HISTORY     - Date     Condition        Report By
 DE9126  HISTORY     - 2002     MONUMENTED       NGS
 DE9126  HISTORY     - 20051027 GOOD             NGS
 DE9126
 DE9126                          STATION DESCRIPTION
 DE9126
 DE9126'DESCRIBED BY NATIONAL GEODETIC SURVEY 2002 (DBC)
 DE9126'TO REACH THE STATION FROM THE INTERSECTIONS OF MARYLAND
 DE9126'AVENUE/RICHARDSON AVENUE (US HIGHWAY 413) SOMERSET AVENUE AND
 DE9126'JACKSONVILLE ROAD NEAR THE CITY WATER TANK IN CRISFIELD.  GO 0.55
 DE9126'MILES (0.89 KM) NORTHEASTERLY ALONG JACKSONVILLE ROAD TO THE JUNCTION
 DE9126'OF BYRD ROAD AND THE STATION ON THE LEFT.  THE STATION IS A NGS
 DE9126'VERTICAL CONTROL DISK STAMPED B 201 2002, SET IN THE SOUTHEAST CORNER
 DE9126'OF AN L SHAPED CONCRETE CULVERT UNDER JACKSONVILLE ROAD AND ABOUT 1.0
 DE9126'FEET (0.3 M) BELOW THE SURFACE OF THE ROADS.  LOCATED 25.4 FEET (7.7
 DE9126'M) NORTHWEST OF THE CENTERLINE OF JACKSONVILLE ROAD, 22.0 FEET (6.7 M)
 DE9126'NORTHEAST OF THE CENTER OF BYRD ROAD, 3.5 FEET (1.1 M) EAST OF POWER
 DE9126'POLE NUMBER 39741, 79874, T 22, WITH 3 GUY WIRES AND 2.0 FEET (0.6 M)
 DE9126'NORTH OF A 4X4 WOODEN POST WITH ROAD SIGN FOR BYRD ROAD.
 DE9126
 DE9126                          STATION RECOVERY (2005)
 DE9126
 DE9126'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DE9126'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0866 ***********************************************************************
 JV0866  DESIGNATION -  B 25 RESET
 JV0866  PID         -  JV0866
 JV0866  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0866  COUNTRY     -  US
 JV0866  USGS QUAD   -  BELTSVILLE (2016)
 JV0866
 JV0866                         *CURRENT SURVEY CONTROL
 JV0866  ______________________________________________________________________
 JV0866* NAD 83(1986) POSITION- 39 01 21.     (N) 076 57 07.     (W)   SCALED
 JV0866* NAVD 88 ORTHO HEIGHT -    52.43  (meters)      172.0   (feet) RESET
 JV0866  ______________________________________________________________________
 JV0866  GEOID HEIGHT    -        -32.077 (meters)                     GEOID18
 JV0866  VERT ORDER      -  THIRD
 JV0866
 JV0866.The horizontal coordinates were scaled from a map and have
 JV0866.an estimated accuracy of +/- 6 seconds.
 JV0866
 JV0866.The orthometric height was computed from unverified reset data.
 JV0866
 JV0866.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0866.GEOID18 height accuracy estimate available here.
 JV0866
 JV0866.Click photographs - Photos may exist for this station.
 JV0866
 JV0866;                    North         East    Units  Estimated Accuracy
 JV0866;SPC MD       -   150,510.      404,160.      MT  (+/- 180 meters Scaled)
 JV0866
 JV0866_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ310210(NAD 83)
 JV0866
 JV0866                          SUPERSEDED SURVEY CONTROL
 JV0866
 JV0866  NGVD 29 (??/??/??)   52.65   (m)          172.7    (f) RESET       3  
 JV0866
 JV0866.Superseded values are not recommended for survey control.
 JV0866
 JV0866.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0866.See file dsdata.pdf to determine how the superseded data were derived.
 JV0866
 JV0866_MARKER: DB = BENCH MARK DISK
 JV0866_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0866_STAMPING: B 25 RESET 1967
 JV0866_MARK LOGO: CGS
 JV0866_PROJECTION: PROJECTING 10 CENTIMETERS
 JV0866_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0866+STABILITY: SURFACE MOTION
 JV0866
 JV0866  HISTORY     - Date     Condition        Report By
 JV0866  HISTORY     - 1967     MONUMENTED       MDSRC
 JV0866
 JV0866                          STATION DESCRIPTION
 JV0866
 JV0866'DESCRIBED BY MD STATE ROADS COMM 1967
 JV0866'3.2 MI SW FROM BELTSVILLE.
 JV0866'1.7 MILES SOUTHWEST ALONG U.S. HIGHWAY 1 FROM BELTSVILLE, THENCE
 JV0866'1.5 MILES WEST ALONG THE CAPITOL BELTWAY (INTERSTATE HIGHWAY 495),
 JV0866'LOCATED IN THE NORTHEAST QUADRANT OF THE CAPITOL BELTWAY AND
 JV0866'INTERSTATE HIGHWAY 95 INTERCHANGE, ABOUT 279 FEET NORTH OF THE
 JV0866'CENTER LINE OF THE WEST BOUND LANE OF THE CAPITOL BELTWAY, 128
 JV0866'FEET EAST OF THE EAST EDGE OF CONCRETE ENTRANCE RAMP TO THE SOUTH
 JV0866'BOUND LANE OF INTERSTATE HIGHWAY 95, 19.6 FEET NORTH OF A 10
 JV0866'INCH TWIN-BODIED PEAR TREE, 20 FEET SOUTH OF A 12 INCH PEAR TREE,
 JV0866'2 FEET EAST OF A WITNESS POST, SET IN THE TOP OF A CONCRETE POST
 JV0866'PROJECTING 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0915 ***********************************************************************
 JV0915  DESIGNATION -  B 26
 JV0915  PID         -  JV0915
 JV0915  STATE/COUNTY-  MD/BALTIMORE
 JV0915  COUNTRY     -  US
 JV0915  USGS QUAD   -  RELAY (2016)
 JV0915
 JV0915                         *CURRENT SURVEY CONTROL
 JV0915  ______________________________________________________________________
 JV0915* NAD 83(1986) POSITION- 39 14 18.     (N) 076 41 49.     (W)   SCALED
 JV0915* NAVD 88 ORTHO HEIGHT -    23.696 (meters)       77.74  (feet) ADJUSTED
 JV0915  ______________________________________________________________________
 JV0915  GEOID HEIGHT    -        -32.549 (meters)                     GEOID18
 JV0915  DYNAMIC HEIGHT  -         23.683 (meters)       77.70  (feet) COMP
 JV0915  MODELED GRAVITY -    980,100.1   (mgal)                       NAVD 88
 JV0915
 JV0915  VERT ORDER      -  SECOND    CLASS 0
 JV0915
 JV0915.The horizontal coordinates were scaled from a map and have
 JV0915.an estimated accuracy of +/- 6 seconds.
 JV0915
 JV0915.The orthometric height was determined by differential leveling and
 JV0915.adjusted by the NATIONAL GEODETIC SURVEY
 JV0915.in June 1991.
 JV0915
 JV0915.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0915.GEOID18 height accuracy estimate available here.
 JV0915
 JV0915.Click photographs - Photos may exist for this station.
 JV0915
 JV0915.The dynamic height is computed by dividing the NAVD 88
 JV0915.geopotential number by the normal gravity value computed on the
 JV0915.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0915.degrees latitude (g = 980.6199 gals.).
 JV0915
 JV0915.The modeled gravity was interpolated from observed gravity values.
 JV0915
 JV0915;                    North         East    Units  Estimated Accuracy
 JV0915;SPC MD       -   174,510.      426,160.      MT  (+/- 180 meters Scaled)
 JV0915
 JV0915_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ535445(NAD 83)
 JV0915
 JV0915                          SUPERSEDED SURVEY CONTROL
 JV0915
 JV0915  NGVD 29 (11/26/84)   23.924  (m)           78.49   (f) ADJUSTED    2 0
 JV0915
 JV0915.Superseded values are not recommended for survey control.
 JV0915
 JV0915.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0915.See file dsdata.pdf to determine how the superseded data were derived.
 JV0915
 JV0915_MARKER: DB = BENCH MARK DISK
 JV0915_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0915_SP_SET: CURB
 JV0915_STAMPING: B 26 1957
 JV0915_MARK LOGO: CGS
 JV0915_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0915
 JV0915  HISTORY     - Date     Condition        Report By
 JV0915  HISTORY     - 1957     MONUMENTED       CGS
 JV0915  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 JV0915
 JV0915                          STATION DESCRIPTION
 JV0915
 JV0915'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0915'0.5 MI W FROM HALETHORPE.
 JV0915'FROM JUNCTION OF U.S. HIGHWAY 1 AND STATE HIGHWAY 166 AT THE
 JV0915'SOUTHEAST EDGE OF RELAY, GO NORTHWEST ON HIGHWAY 166 0.8 MILE TO
 JV0915'FRANCIS AVENUE, TURN RIGHT ON FRANCIS AVENUE (NORTHEAST) 0.8
 JV0915'MILE TO A WIDE BLACK TOP STREET ON THE LEFT.  MARK IS NEAR EAST
 JV0915'END OF CONCRETE CULVERT, 56 FEET NORTHWEST OF POWER POLE 10, 33
 JV0915'FEET NORTHWEST OF CENTERLINE OF FRANCIS AVE., 20 1/2 FEET EAST
 JV0915'OF CENTERLINE OF WIDE BLACK TOP STREET AND 1.6 FEET SOUTHEAST
 JV0915'OF CULVERT IN THE TOP OF CURB.  DISK IS SET IN DRILL HOLE IN
 JV0915'CURB AND STAMPED B 26 1957.
 JV0915
 JV0915                          STATION RECOVERY (2003)
 JV0915
 JV0915'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0915'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3571 ***********************************************************************
 JV3571  DESIGNATION -  B 27
 JV3571  PID         -  JV3571
 JV3571  STATE/COUNTY-  MD/WASHINGTON
 JV3571  COUNTRY     -  US
 JV3571  USGS QUAD   -  FUNKSTOWN (2017)
 JV3571
 JV3571                         *CURRENT SURVEY CONTROL
 JV3571  ______________________________________________________________________
 JV3571* NAD 83(1986) POSITION- 39 35 39.     (N) 077 40 45.     (W)   SCALED
 JV3571* NAVD 88 ORTHO HEIGHT -   152.263 (meters)      499.55  (feet) ADJUSTED
 JV3571  ______________________________________________________________________
 JV3571  GEOID HEIGHT    -        -33.941 (meters)                     GEOID18
 JV3571  DYNAMIC HEIGHT  -        152.174 (meters)      499.26  (feet) COMP
 JV3571  MODELED GRAVITY -    980,041.9   (mgal)                       NAVD 88
 JV3571
 JV3571  VERT ORDER      -  SECOND    CLASS 0
 JV3571
 JV3571.The horizontal coordinates were scaled from a map and have
 JV3571.an estimated accuracy of +/- 6 seconds.
 JV3571
 JV3571.The orthometric height was determined by differential leveling and
 JV3571.adjusted by the NATIONAL GEODETIC SURVEY
 JV3571.in June 1991.
 JV3571
 JV3571.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3571.GEOID18 height accuracy estimate available here.
 JV3571
 JV3571.Click photographs - Photos may exist for this station.
 JV3571
 JV3571.The dynamic height is computed by dividing the NAVD 88
 JV3571.geopotential number by the normal gravity value computed on the
 JV3571.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3571.degrees latitude (g = 980.6199 gals.).
 JV3571
 JV3571.The modeled gravity was interpolated from observed gravity values.
 JV3571
 JV3571;                    North         East    Units  Estimated Accuracy
 JV3571;SPC MD       -   214,190.      341,660.      MT  (+/- 180 meters Scaled)
 JV3571
 JV3571_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ699861(NAD 83)
 JV3571
 JV3571                          SUPERSEDED SURVEY CONTROL
 JV3571
 JV3571  NGVD 29 (11/26/84)  152.470  (m)          500.23   (f) ADJUSTED    2 0
 JV3571
 JV3571.Superseded values are not recommended for survey control.
 JV3571
 JV3571.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3571.See file dsdata.pdf to determine how the superseded data were derived.
 JV3571
 JV3571_MARKER: DB = BENCH MARK DISK
 JV3571_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3571_STAMPING: B 27 1957
 JV3571_MARK LOGO: CGS
 JV3571_PROJECTION: FLUSH
 JV3571_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3571+STABILITY: SURFACE MOTION
 JV3571_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3571+SATELLITE: SATELLITE OBSERVATIONS - June 26, 2025
 JV3571
 JV3571  HISTORY     - Date     Condition        Report By
 JV3571  HISTORY     - 1957     MONUMENTED       CGS
 JV3571  HISTORY     - 1958     GOOD             CGS
 JV3571  HISTORY     - 20250626 GOOD             MDSHA
 JV3571
 JV3571                          STATION DESCRIPTION
 JV3571
 JV3571'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3571'2.4 MI SE FROM FUNKSTOWN.
 JV3571'0.6 MILE EAST ALONG EAST BALTIMORE STREET FROM THE JUNCTION OF
 JV3571'U.S. ALT. HIGHWAY 40, AND EAST OAK RIDGE DRIVE AT FUNKSTOWN,
 JV3571'THENCE 0.6 MILE EAST ALONG HEBB ROAD, THENCE 1.2 MILES SOUTHEAST
 JV3571'ALONG U.S. HIGHWAY 40, AT THE INTERSECTION OF BEAVER CREEK ROAD,
 JV3571'135 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 72.2 FEET SOUTH
 JV3571'OF A FENCE CORNER POST, 2 FEET SOUTH OF POWER LINE POLE 1, 1.0
 JV3571'FOOT EAST OF A FENCE LINE, 2.0 FEET NORTH OF A WITNESS POST, AND
 JV3571'SET IN THE TOP OF A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE
 JV3571'GROUND.
 JV3571
 JV3571                          STATION RECOVERY (2025)
 JV3571
 JV3571'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 JV3571'THE MARK IS 43.4 FT (13.2 M) WEST-NORTHWEST OF A LIGHT POLE, 38.9 FT
 JV3571'(11.9 M) SOUTHWEST OF A UTILITY POLE NUMBERED C AND P 76 AND SET IN
 JV3571'THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3570 ***********************************************************************
 JV3570  DESIGNATION -  B 27 X
 JV3570  PID         -  JV3570
 JV3570  STATE/COUNTY-  MD/WASHINGTON
 JV3570  COUNTRY     -  US
 JV3570  USGS QUAD   -  FUNKSTOWN (2017)
 JV3570
 JV3570                         *CURRENT SURVEY CONTROL
 JV3570  ______________________________________________________________________
 JV3570* NAD 83(1986) POSITION- 39 35 39.     (N) 077 40 45.     (W)   SCALED
 JV3570* NAVD 88 ORTHO HEIGHT -   174.20  (+/-2cm)      571.5   (feet) VERTCON3
 JV3570  ______________________________________________________________________
 JV3570  GEOID HEIGHT    -        -33.941 (meters)                     GEOID18
 JV3570  VERT ORDER      -  THIRD (See Below)
 JV3570
 JV3570.The horizontal coordinates were scaled from a map and have
 JV3570.an estimated accuracy of +/- 6 seconds.
 JV3570
 JV3570.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3570.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3570
 JV3570.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3570.GEOID18 height accuracy estimate available here.
 JV3570
 JV3570.The vertical order pertains to the NGVD 29 superseded value.
 JV3570
 JV3570.Click photographs - Photos may exist for this station.
 JV3570
 JV3570;                    North         East    Units  Estimated Accuracy
 JV3570;SPC MD       -   214,190.      341,660.      MT  (+/- 180 meters Scaled)
 JV3570
 JV3570_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ699861(NAD 83)
 JV3570
 JV3570                          SUPERSEDED SURVEY CONTROL
 JV3570
 JV3570  NGVD 29 (??/??/??)  174.41   (m)          572.2    (f) RESET       3  
 JV3570
 JV3570.Superseded values are not recommended for survey control.
 JV3570
 JV3570.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3570.See file dsdata.pdf to determine how the superseded data were derived.
 JV3570
 JV3570_MARKER: DD = SURVEY DISK
 JV3570_SETTING: 66 = SET IN ROCK OUTCROP
 JV3570_STAMPING: B 27 X 1965
 JV3570_MARK LOGO: MDSRC
 JV3570_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3570+STABILITY: POSITION/ELEVATION WELL
 JV3570
 JV3570  HISTORY     - Date     Condition        Report By
 JV3570  HISTORY     - 1965     MONUMENTED       MDSRC
 JV3570
 JV3570                          STATION DESCRIPTION
 JV3570
 JV3570'DESCRIBED BY MD STATE ROADS COMM 1965
 JV3570'1.5 MI E FROM FUNKSTOWN.
 JV3570'FROM THE JUNCTION OF ALT. U.S. RTE. 40 AND EAST OAK RIDGE AVENUE,
 JV3570'IN FUNKSTOWN, PROCEED EAST ALONG BALTIMORE STREET FOR 0.6 MILES,
 JV3570'(HEBB ROAD CONTINUES AHEAD) THENCE 0.6 MILES EAST ALONG HEBB ROAD
 JV3570'TO THE JUNCTION OF U.S. RTE. 40, TURN LEFT AND PROCEED NORTHWEST
 JV3570'ALONG U.S. RTE. 40 FOR 0.3 MILES TO THE TOP OF THE HILL AND MARKER
 JV3570'ON THE RIGHT, 78.0 FEET NORTHEAST OF THE CENTERLINE OF U.S. RTE.
 JV3570'40, 65.0 FEET EAST OF POLE H9608, 21.6 FEET SOUTHWEST OF THE SOUTH
 JV3570'CORNER OF RESIDENCE OF MRS DAVID PHETTEPLACE AND 46.4 FEET
 JV3570'NORTHWEST OF THE NORTHWEST CORNER OF 1 1/2 STORY STONE RESIDENCE,
 JV3570'SET FLUSH IN A 4 FOOT BY 10 FOOT ROCK OUTCROP PROJECTING 12 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1129 ***********************************************************************
 HV1129  DESIGNATION -  B 28
 HV1129  PID         -  HV1129
 HV1129  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1129  COUNTRY     -  US
 HV1129  USGS QUAD   -  LANHAM (2016)
 HV1129
 HV1129                         *CURRENT SURVEY CONTROL
 HV1129  ______________________________________________________________________
 HV1129* NAD 83(1986) POSITION- 38 57 53.     (N) 076 51 53.     (W)   SCALED
 HV1129* NAVD 88 ORTHO HEIGHT -    42.734 (meters)      140.20  (feet) ADJUSTED
 HV1129  ______________________________________________________________________
 HV1129  GEOID HEIGHT    -        -32.343 (meters)                     GEOID18
 HV1129  DYNAMIC HEIGHT  -         42.710 (meters)      140.12  (feet) COMP
 HV1129  MODELED GRAVITY -    980,090.2   (mgal)                       NAVD 88
 HV1129
 HV1129  VERT ORDER      -  SECOND    CLASS 0
 HV1129
 HV1129.The horizontal coordinates were scaled from a map and have
 HV1129.an estimated accuracy of +/- 6 seconds.
 HV1129
 HV1129.The orthometric height was determined by differential leveling and
 HV1129.adjusted by the NATIONAL GEODETIC SURVEY
 HV1129.in June 1991.
 HV1129
 HV1129.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1129.GEOID18 height accuracy estimate available here.
 HV1129
 HV1129.Click photographs - Photos may exist for this station.
 HV1129
 HV1129.The dynamic height is computed by dividing the NAVD 88
 HV1129.geopotential number by the normal gravity value computed on the
 HV1129.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1129.degrees latitude (g = 980.6199 gals.).
 HV1129
 HV1129.The modeled gravity was interpolated from observed gravity values.
 HV1129
 HV1129;                    North         East    Units  Estimated Accuracy
 HV1129;SPC MD       -   144,100.      411,720.      MT  (+/- 180 meters Scaled)
 HV1129
 HV1129_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ384145(NAD 83)
 HV1129
 HV1129                          SUPERSEDED SURVEY CONTROL
 HV1129
 HV1129  NGVD 29 (11/26/84)   42.972  (m)          140.98   (f) ADJUSTED    2 0
 HV1129
 HV1129.Superseded values are not recommended for survey control.
 HV1129
 HV1129.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1129.See file dsdata.pdf to determine how the superseded data were derived.
 HV1129
 HV1129_MARKER: DB = BENCH MARK DISK
 HV1129_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1129_SP_SET: FOUNDATION OF SCHOOL
 HV1129_STAMPING: B 28 1958
 HV1129_MARK LOGO: CGS
 HV1129_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1129
 HV1129  HISTORY     - Date     Condition        Report By
 HV1129  HISTORY     - 1958     MONUMENTED       CGS
 HV1129
 HV1129                          STATION DESCRIPTION
 HV1129
 HV1129'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1129'0.2 MI N FROM LANHAM.
 HV1129'ABOUT 0.25 MILE NORTH ALONG PRINCE GARDENS PARKWAY FROM THE
 HV1129'JUNCTION OF U.S. HIGHWAY 50 AT LANHAM, SET VERTICALLY IN THE
 HV1129'CONCRETE FOUNDATION OF THE OLD LANHAM SCHOOL, 2 FEET WEST OF
 HV1129'THE NORTHEAST CORNER OF THE BUILDING AND 1.7 FEET ABOVE
 HV1129'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1416 ***********************************************************************
 JU1416  DESIGNATION -  B 3
 JU1416  PID         -  JU1416
 JU1416  STATE/COUNTY-  MD/CECIL
 JU1416  COUNTRY     -  US
 JU1416  USGS QUAD   -  NEWARK WEST (2016)
 JU1416
 JU1416                         *CURRENT SURVEY CONTROL
 JU1416  ______________________________________________________________________
 JU1416* NAD 83(1986) POSITION- 39 38 35.     (N) 075 52 22.     (W)   SCALED
 JU1416* NAVD 88 ORTHO HEIGHT -    42.018 (meters)      137.85  (feet) ADJUSTED
 JU1416  ______________________________________________________________________
 JU1416  GEOID HEIGHT    -        -33.101 (meters)                     GEOID18
 JU1416  DYNAMIC HEIGHT  -         41.998 (meters)      137.79  (feet) COMP
 JU1416  MODELED GRAVITY -    980,138.1   (mgal)                       NAVD 88
 JU1416
 JU1416  VERT ORDER      -  FIRST     CLASS II
 JU1416
 JU1416.The horizontal coordinates were scaled from a map and have
 JU1416.an estimated accuracy of +/- 6 seconds.
 JU1416
 JU1416.The orthometric height was determined by differential leveling and
 JU1416.adjusted by the NATIONAL GEODETIC SURVEY
 JU1416.in June 1991.
 JU1416
 JU1416.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1416.GEOID18 height accuracy estimate available here.
 JU1416
 JU1416.Click photographs - Photos may exist for this station.
 JU1416
 JU1416.The dynamic height is computed by dividing the NAVD 88
 JU1416.geopotential number by the normal gravity value computed on the
 JU1416.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1416.degrees latitude (g = 980.6199 gals.).
 JU1416
 JU1416.The modeled gravity was interpolated from observed gravity values.
 JU1416
 JU1416;                    North         East    Units  Estimated Accuracy
 JU1416;SPC MD       -   220,000.      496,760.      MT  (+/- 180 meters Scaled)
 JU1416
 JU1416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ251885(NAD 83)
 JU1416
 JU1416                          SUPERSEDED SURVEY CONTROL
 JU1416
 JU1416  NGVD 29 (11/26/84)   42.253  (m)          138.63   (f) ADJUSTED    1 2
 JU1416
 JU1416.Superseded values are not recommended for survey control.
 JU1416
 JU1416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1416.See file dsdata.pdf to determine how the superseded data were derived.
 JU1416
 JU1416_MARKER: DB = BENCH MARK DISK
 JU1416_SETTING: 66 = SET IN ROCK OUTCROP
 JU1416_STAMPING: B 3 1931
 JU1416_MARK LOGO: CGS
 JU1416_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JU1416+STABILITY: POSITION/ELEVATION WELL
 JU1416
 JU1416  HISTORY     - Date     Condition        Report By
 JU1416  HISTORY     - 1931     MONUMENTED       CGS
 JU1416
 JU1416                          STATION DESCRIPTION
 JU1416
 JU1416'DESCRIBED BY COAST AND GEODETIC SURVEY 1931
 JU1416'6.8 MI W FROM NEWARK.
 JU1416'ON THE BALTIMORE AND OHIO RAILROAD, 8 POLES WEST OF THE STATION
 JU1416'AT THE RAILROAD STOP CHILDS, 1 RAIL WEST OF THE WEST END OF A
 JU1416'SPUR TRACK, AT POLE 44-18, ABOUT 10 FEET NORTH OF THE NORTH
 JU1416'RAIL OF THE NORTH TRACK, IN A ROCK OUTCROP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1417 ***********************************************************************
 JU1417  DESIGNATION -  B 3 RESET 1953 BORR
 JU1417  PID         -  JU1417
 JU1417  STATE/COUNTY-  MD/CECIL
 JU1417  COUNTRY     -  US
 JU1417  USGS QUAD   -  NEWARK WEST (2016)
 JU1417
 JU1417                         *CURRENT SURVEY CONTROL
 JU1417  ______________________________________________________________________
 JU1417* NAD 83(1986) POSITION- 39 38 47.     (N) 075 52 12.     (W)   SCALED
 JU1417* NAVD 88 ORTHO HEIGHT -    42.614 (meters)      139.81  (feet) ADJUSTED
 JU1417  ______________________________________________________________________
 JU1417  GEOID HEIGHT    -        -33.095 (meters)                     GEOID18
 JU1417  DYNAMIC HEIGHT  -         42.593 (meters)      139.74  (feet) COMP
 JU1417  MODELED GRAVITY -    980,138.4   (mgal)                       NAVD 88
 JU1417
 JU1417  VERT ORDER      -  SECOND    CLASS 0
 JU1417
 JU1417.The horizontal coordinates were scaled from a map and have
 JU1417.an estimated accuracy of +/- 6 seconds.
 JU1417
 JU1417.The orthometric height was determined by differential leveling and
 JU1417.adjusted by the NATIONAL GEODETIC SURVEY
 JU1417.in June 1991.
 JU1417
 JU1417.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1417.GEOID18 height accuracy estimate available here.
 JU1417
 JU1417.Click photographs - Photos may exist for this station.
 JU1417
 JU1417.The dynamic height is computed by dividing the NAVD 88
 JU1417.geopotential number by the normal gravity value computed on the
 JU1417.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1417.degrees latitude (g = 980.6199 gals.).
 JU1417
 JU1417.The modeled gravity was interpolated from observed gravity values.
 JU1417
 JU1417;                    North         East    Units  Estimated Accuracy
 JU1417;SPC MD       -   220,370.      496,990.      MT  (+/- 180 meters Scaled)
 JU1417
 JU1417_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ253888(NAD 83)
 JU1417
 JU1417                          SUPERSEDED SURVEY CONTROL
 JU1417
 JU1417  NGVD 29 (11/26/84)   42.922  (m)          140.82   (f) ADJUSTED    2 0
 JU1417
 JU1417.Superseded values are not recommended for survey control.
 JU1417
 JU1417.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1417.See file dsdata.pdf to determine how the superseded data were derived.
 JU1417
 JU1417_MARKER: DD = SURVEY DISK
 JU1417_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JU1417_SP_SET: SIGNAL TOWER BASE
 JU1417_STAMPING: B 3 RESET 1953
 JU1417_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU1417
 JU1417  HISTORY     - Date     Condition        Report By
 JU1417  HISTORY     - 1953     MONUMENTED       BORR
 JU1417  HISTORY     - 1964     GOOD             CGS
 JU1417  HISTORY     - 1983     GOOD             LOCSUR
 JU1417
 JU1417                          STATION DESCRIPTION
 JU1417
 JU1417'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1417'0.3 MI SW FROM CHILDS.
 JU1417'0.3 MILE SOUTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JU1417'THE STATION AT CHILDS, 12 RAILS SOUTHWEST OF THE
 JU1417'NORTHEASTERN EXPRESSWAY BRIDGE, AND 10 FEET NORTHWEST OF THE
 JU1417'WEST RAIL.  A STANDARD DISK IN THE TOP CONCRETE BASE OF THE
 JU1417'REMOVED SIGNAL TOWER, THE BASE IS ABOUT 2 FEET SQUARE AND
 JU1417'PROJECTS ABOUT 2.5 FEET AND ABOUT 2 FEET BELOW THE LEVEL OF
 JU1417'THE TRACK.  NOTE-- THIS BENCH MARK WAS ESTABLISHED AND ITS
 JU1417'ELEVATION DETERMINED BY ENGINEERS OF THE BALTIMORE AND OHIO
 JU1417'RAILROAD IN JULY 1953.
 JU1417
 JU1417                          STATION RECOVERY (1983)
 JU1417
 JU1417'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1983
 JU1417'NORTHSIDE OF TRACK IS SQUARE CONCRETE BASE AT POLE 44-28 (4TH POLE
 JU1417'WEST OF RTE I 95) RV
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1132 ***********************************************************************
 JV1132  DESIGNATION -  B 30 C OF B
 JV1132  PID         -  JV1132
 JV1132  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1132  COUNTRY     -  US
 JV1132  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1132
 JV1132                         *CURRENT SURVEY CONTROL
 JV1132  ______________________________________________________________________
 JV1132* NAD 83(1986) POSITION- 39 17 16.     (N) 076 36 31.     (W)   SCALED
 JV1132* NAVD 88 ORTHO HEIGHT -     1.823 (meters)        5.98  (feet) ADJUSTED
 JV1132  ______________________________________________________________________
 JV1132  GEOID HEIGHT    -        -32.739 (meters)                     GEOID18
 JV1132  DYNAMIC HEIGHT  -          1.822 (meters)        5.98  (feet) COMP
 JV1132  MODELED GRAVITY -    980,103.8   (mgal)                       NAVD 88
 JV1132
 JV1132  VERT ORDER      -  FIRST     CLASS I
 JV1132
 JV1132.The horizontal coordinates were scaled from a map and have
 JV1132.an estimated accuracy of +/- 6 seconds.
 JV1132
 JV1132.The orthometric height was determined by differential leveling and
 JV1132.adjusted by the NATIONAL GEODETIC SURVEY
 JV1132.in June 1991.
 JV1132
 JV1132.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1132.GEOID18 height accuracy estimate available here.
 JV1132
 JV1132.Click photographs - Photos may exist for this station.
 JV1132
 JV1132.The dynamic height is computed by dividing the NAVD 88
 JV1132.geopotential number by the normal gravity value computed on the
 JV1132.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1132.degrees latitude (g = 980.6199 gals.).
 JV1132
 JV1132.The modeled gravity was interpolated from observed gravity values.
 JV1132
 JV1132;                    North         East    Units  Estimated Accuracy
 JV1132;SPC MD       -   180,030.      433,770.      MT  (+/- 180 meters Scaled)
 JV1132
 JV1132_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ612499(NAD 83)
 JV1132
 JV1132                          SUPERSEDED SURVEY CONTROL
 JV1132
 JV1132  NGVD 29 (11/26/84)    2.066  (m)            6.78   (f) ADJUSTED    1 1
 JV1132
 JV1132.Superseded values are not recommended for survey control.
 JV1132
 JV1132.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1132.See file dsdata.pdf to determine how the superseded data were derived.
 JV1132
 JV1132_STAMPING: B 30 1959
 JV1132
 JV1132  HISTORY     - Date     Condition        Report By
 JV1132  HISTORY     - 1959     MONUMENTED       MD0050
 JV1132  HISTORY     - 1959     GOOD             CGS
 JV1132  HISTORY     - 1971     GOOD             NGS
 JV1132  HISTORY     - 19950621 MARK NOT FOUND   USPSQD
 JV1132  HISTORY     - 19950622 MARK NOT FOUND   USPSQD
 JV1132  HISTORY     - 20170820 MARK NOT FOUND   GEOCAC
 JV1132
 JV1132                          STATION DESCRIPTION
 JV1132
 JV1132'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1132'AT BALTIMORE.
 JV1132'AT BALTIMORE, AT THE SOUTHEAST CORNER OF THE INTERSECTION OF
 JV1132'GAY AND LOMBARD STREET, 2.7 FEET SOUTH OF THE SOUTH CURB OF
 JV1132'LOMBARD STREET, 7 1/2 FEET EAST OF THE EAST CURB OF GAY STREET,
 JV1132'8.1 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE U.S. APPRAISERS
 JV1132'STORE, SET IN THE TOP OF A CONCRETE POST 3 INCHES BELOW THE
 JV1132'LEVEL OF THE SIDEWALK AND PROTECTED BY A CAST IRON COVER MARKED
 JV1132'CITY OF BALTIMORE SURVEY POINT.
 JV1132
 JV1132                          STATION RECOVERY (1971)
 JV1132
 JV1132'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1132'RECOVERED IN GOOD CONDITION.
 JV1132
 JV1132                          STATION RECOVERY (1995)
 JV1132
 JV1132'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1132'MARK NOT FOUND.
 JV1132
 JV1132                          STATION RECOVERY (1995)
 JV1132
 JV1132'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1132'MARK NOT FOUND.
 JV1132
 JV1132                          STATION RECOVERY (2017)
 JV1132
 JV1132'RECOVERY NOTE BY GEOCACHING 2017 (RLM)
 JV1132'THE MARK WAS SEARCHED FOR AND NOT FOUND.  THE SIDEWALK HAS BEEN
 JV1132'REPLACED AND THE REPLACEMENT WALK HAS NO ACCESS TO THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0421 ***********************************************************************
 JV0421  DESIGNATION -  B 31
 JV0421  PID         -  JV0421
 JV0421  STATE/COUNTY-  MD/BALTIMORE
 JV0421  COUNTRY     -  US
 JV0421  USGS QUAD   -  WHITE MARSH (2016)
 JV0421
 JV0421                         *CURRENT SURVEY CONTROL
 JV0421  ______________________________________________________________________
 JV0421* NAD 83(1986) POSITION- 39 25 11.26   (N) 076 23 30.12   (W)   HD_HELD1
 JV0421* NAVD 88 ORTHO HEIGHT -    43.743 (meters)      143.51  (feet) ADJUSTED
 JV0421  ______________________________________________________________________
 JV0421  GEOID HEIGHT    -        -32.969 (meters)                     GEOID18
 JV0421  DYNAMIC HEIGHT  -         43.720 (meters)      143.44  (feet) COMP
 JV0421  MODELED GRAVITY -    980,105.4   (mgal)                       NAVD 88
 JV0421
 JV0421  VERT ORDER      -  SECOND    CLASS I
 JV0421
 JV0421.The horizontal coordinates were determined by differentially corrected
 JV0421.hand held GPS observations or other comparable positioning techniques
 JV0421.and have an estimated accuracy of +/- 3 meters.
 JV0421
 JV0421.The orthometric height was determined by differential leveling and
 JV0421.adjusted by the NATIONAL GEODETIC SURVEY
 JV0421.in May 2019.
 JV0421
 JV0421.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0421.GEOID18 height accuracy estimate available here.
 JV0421
 JV0421.Click photographs - Photos may exist for this station.
 JV0421
 JV0421.The dynamic height is computed by dividing the NAVD 88
 JV0421.geopotential number by the normal gravity value computed on the
 JV0421.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0421.degrees latitude (g = 980.6199 gals.).
 JV0421
 JV0421.The modeled gravity was interpolated from observed gravity values.
 JV0421
 JV0421;                    North         East    Units  Estimated Accuracy
 JV0421;SPC MD       -   194,784.7     452,381.4     MT  (+/- 3 meters HH1 GPS) 
 JV0421
 JV0421_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8020364287(NAD 83)
 JV0421
 JV0421                          SUPERSEDED SURVEY CONTROL
 JV0421
 JV0421  NAVD 88 (06/15/91)   43.757  (m)          143.56   (f) SUPERSEDED  1 1
 JV0421  NGVD 29 (11/26/84)   44.001  (m)          144.36   (f) ADJUSTED    1 1
 JV0421
 JV0421.Superseded values are not recommended for survey control.
 JV0421
 JV0421.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0421.See file dsdata.pdf to determine how the superseded data were derived.
 JV0421
 JV0421_MARKER: DB = BENCH MARK DISK
 JV0421_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0421_STAMPING: B 31 1959
 JV0421_MARK LOGO: CGS
 JV0421_PROJECTION: PROJECTING 10 CENTIMETERS
 JV0421_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0421+STABILITY: SURFACE MOTION
 JV0421
 JV0421  HISTORY     - Date     Condition        Report By
 JV0421  HISTORY     - 1959     MONUMENTED       CGS
 JV0421  HISTORY     - 1971     GOOD             NGS
 JV0421  HISTORY     - 19960505 GOOD             USPSQD
 JV0421  HISTORY     - 20190313 GOOD             ARCSHE
 JV0421
 JV0421                          STATION DESCRIPTION
 JV0421
 JV0421'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0421'3.2 MI W FROM JOPPA.
 JV0421'ABOUT 3.15 MILES WEST ALONG STATE HIGHWAY 7 FROM THE TRINITY
 JV0421'LUTHERAN CHURCH AND CEMETERY AT JOPPA, 125 FEET EAST OF THE
 JV0421'CENTER LINE OF THE JUNCTION OF THE HIGHWAY AND PFEFFERS ROAD
 JV0421'LEADING NORTH, 17 1/2 FEET SOUTH OF THE CENTER LINE OF THE
 JV0421'HIGHWAY, 10 1/2 FEET EAST OF POWER POLE NUMBER 25, 56 FEET
 JV0421'SOUTHWEST OF THE CENTER OF THE JUNCTION OF THE HIGHWAY AND A
 JV0421'DRIVEWAY LEADING NORTH, 1.0 FOOT WEST OF A METAL WITNESS POST,
 JV0421'ABOUT 2 FEET ABOVE THE LEVEL OF THE HIGHWAY, AND SET IN THE TOP
 JV0421'OF A CONCRETE POST PROJECTING 2 INCHES.
 JV0421
 JV0421                          STATION RECOVERY (1996)
 JV0421
 JV0421'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0421'RECOVERED IN GOOD CONDITION.
 JV0421
 JV0421                          STATION RECOVERY (2019)
 JV0421
 JV0421'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 JV0421'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2165 ***********************************************************************
 JV2165  DESIGNATION -  B 34
 JV2165  PID         -  JV2165
 JV2165  STATE/COUNTY-  MD/MONTGOMERY
 JV2165  COUNTRY     -  US
 JV2165  USGS QUAD   -  KENSINGTON (2016)
 JV2165
 JV2165                         *CURRENT SURVEY CONTROL
 JV2165  ______________________________________________________________________
 JV2165* NAD 83(1986) POSITION- 39 01 44.     (N) 077 04 33.     (W)   SCALED
 JV2165* NAVD 88 ORTHO HEIGHT -    93.057 (meters)      305.30  (feet) ADJUSTED
 JV2165  ______________________________________________________________________
 JV2165  GEOID HEIGHT    -        -31.873 (meters)                     GEOID18
 JV2165  DYNAMIC HEIGHT  -         93.007 (meters)      305.14  (feet) COMP
 JV2165  MODELED GRAVITY -    980,089.9   (mgal)                       NAVD 88
 JV2165
 JV2165  VERT ORDER      -  SECOND    CLASS 0
 JV2165
 JV2165.The horizontal coordinates were scaled from a map and have
 JV2165.an estimated accuracy of +/- 6 seconds.
 JV2165
 JV2165.The orthometric height was determined by differential leveling and
 JV2165.adjusted by the NATIONAL GEODETIC SURVEY
 JV2165.in June 1991.
 JV2165
 JV2165.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2165.GEOID18 height accuracy estimate available here.
 JV2165
 JV2165.Click photographs - Photos may exist for this station.
 JV2165
 JV2165.The dynamic height is computed by dividing the NAVD 88
 JV2165.geopotential number by the normal gravity value computed on the
 JV2165.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2165.degrees latitude (g = 980.6199 gals.).
 JV2165
 JV2165.The modeled gravity was interpolated from observed gravity values.
 JV2165
 JV2165;                    North         East    Units  Estimated Accuracy
 JV2165;SPC MD       -   151,220.      393,430.      MT  (+/- 180 meters Scaled)
 JV2165
 JV2165_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ203220(NAD 83)
 JV2165
 JV2165                          SUPERSEDED SURVEY CONTROL
 JV2165
 JV2165  NGVD 29 (11/26/84)   93.275  (m)          306.02   (f) ADJUSTED    2 0
 JV2165
 JV2165.Superseded values are not recommended for survey control.
 JV2165
 JV2165.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2165.See file dsdata.pdf to determine how the superseded data were derived.
 JV2165
 JV2165_MARKER: DB = BENCH MARK DISK
 JV2165_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2165_SP_SET: PIER
 JV2165_STAMPING: B 34 1938
 JV2165_MARK LOGO: CGS
 JV2165_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2165
 JV2165  HISTORY     - Date     Condition        Report By
 JV2165  HISTORY     - 1938     MONUMENTED       CGS
 JV2165  HISTORY     - 1951     GOOD             CGS
 JV2165  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2165
 JV2165                          STATION DESCRIPTION
 JV2165
 JV2165'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2165'0.3 MI NW FROM KENSINGTON.
 JV2165'ABOUT 0.3 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2165'FROM THE STATION AT KENSINGTON, MONTGOMERY COUNTY, AT THE
 JV2165'OVERHEAD CROSSING OF STATE HIGHWAY 193, ON THE SOUTHEAST END OF
 JV2165'THE FOOTING FOR THE NORTHEAST PIER, AND ABOUT 5 FEET HIGHER THAN
 JV2165'THE TRACK.  A STANDARD DISK, STAMPED B 34 1938.
 JV2165
 JV2165                          STATION RECOVERY (1987)
 JV2165
 JV2165'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2165'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2236 ***********************************************************************
 JV2236  DESIGNATION -  B 35
 JV2236  PID         -  JV2236
 JV2236  STATE/COUNTY-  MD/FREDERICK
 JV2236  COUNTRY     -  US
 JV2236  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2236
 JV2236                         *CURRENT SURVEY CONTROL
 JV2236  ______________________________________________________________________
 JV2236* NAD 83(1986) POSITION- 39 15 00.2    (N) 077 28 41.5    (W)   HD_HELD2
 JV2236* NAVD 88 ORTHO HEIGHT -    69.064 (meters)      226.59  (feet) ADJUSTED
 JV2236  ______________________________________________________________________
 JV2236  GEOID HEIGHT    -        -32.539 (meters)                     GEOID18
 JV2236  DYNAMIC HEIGHT  -         69.026 (meters)      226.46  (feet) COMP
 JV2236  MODELED GRAVITY -    980,083.5   (mgal)                       NAVD 88
 JV2236
 JV2236  VERT ORDER      -  FIRST     CLASS II
 JV2236
 JV2236.The horizontal coordinates were established by autonomous hand held GPS
 JV2236.observations and have an estimated accuracy of +/- 10 meters.
 JV2236
 JV2236.The orthometric height was determined by differential leveling and
 JV2236.adjusted by the NATIONAL GEODETIC SURVEY
 JV2236.in June 1991.
 JV2236
 JV2236.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2236.GEOID18 height accuracy estimate available here.
 JV2236
 JV2236.Click photographs - Photos may exist for this station.
 JV2236
 JV2236.The dynamic height is computed by dividing the NAVD 88
 JV2236.geopotential number by the normal gravity value computed on the
 JV2236.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2236.degrees latitude (g = 980.6199 gals.).
 JV2236
 JV2236.The modeled gravity was interpolated from observed gravity values.
 JV2236
 JV2236;                    North         East    Units  Estimated Accuracy
 JV2236;SPC MD       -   175,874.      358,723.      MT  (+/- 10 meters HH2 GPS)
 JV2236
 JV2236_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8615247453(NAD 83)
 JV2236
 JV2236                          SUPERSEDED SURVEY CONTROL
 JV2236
 JV2236  NGVD 29 (11/26/84)   69.284  (m)          227.31   (f) ADJUSTED    1 2
 JV2236
 JV2236.Superseded values are not recommended for survey control.
 JV2236
 JV2236.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2236.See file dsdata.pdf to determine how the superseded data were derived.
 JV2236
 JV2236_MARKER: DB = BENCH MARK DISK
 JV2236_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2236_SP_SET: BRIDGE
 JV2236_STAMPING: B 35 1935
 JV2236_MARK LOGO: CGS
 JV2236_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2236
 JV2236  HISTORY     - Date     Condition        Report By
 JV2236  HISTORY     - 1935     MONUMENTED       CGS
 JV2236  HISTORY     - 1979     GOOD             NGS
 JV2236
 JV2236                          STATION DESCRIPTION
 JV2236
 JV2236'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2236'AT TUSCARORA.
 JV2236'AT TUSCARORA, FREDERICK COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JV2236'800 FEET NORTHWEST OF THE STATION, AT THE NORTHWEST END OF BRIDGE
 JV2236'40-B OVER TUSCARORA CREEK, IN THE NORTHEAST CORNER OF THE CONCRETE
 JV2236'ABUTMENT, 7 FEET NORTHEAST OF THE CENTER LINE OF THE NORTH-BOUND
 JV2236'TRACK, 1 FOOT WEST OF THE HEAD OF THE RETAINING WALL, AND 1 FOOT
 JV2236'BELOW THE LEVEL OF THE RAILS.  A STANDARD DISK, STAMPED B 35 1935.
 JV2236
 JV2236                          STATION RECOVERY (1979)
 JV2236
 JV2236'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2236'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1397 ***********************************************************************
 JV1397  DESIGNATION -  B 36 RESET
 JV1397  PID         -  JV1397
 JV1397  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1397  COUNTRY     -  US
 JV1397  USGS QUAD   -  ROUND BAY (2016)
 JV1397
 JV1397                         *CURRENT SURVEY CONTROL
 JV1397  ______________________________________________________________________
 JV1397* NAD 83(1986) POSITION- 39 01 34.     (N) 076 36 04.     (W)   SCALED
 JV1397* NAVD 88 ORTHO HEIGHT -    42.92  (meters)      140.8   (feet) RESET
 JV1397  ______________________________________________________________________
 JV1397  GEOID HEIGHT    -        -33.006 (meters)                     GEOID18
 JV1397  VERT ORDER      -  THIRD
 JV1397
 JV1397.The horizontal coordinates were scaled from a map and have
 JV1397.an estimated accuracy of +/- 6 seconds.
 JV1397
 JV1397.The orthometric height was computed from unverified reset data.
 JV1397
 JV1397.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1397.GEOID18 height accuracy estimate available here.
 JV1397
 JV1397.Click photographs - Photos may exist for this station.
 JV1397
 JV1397;                    North         East    Units  Estimated Accuracy
 JV1397;SPC MD       -   150,980.      434,540.      MT  (+/- 180 meters Scaled)
 JV1397
 JV1397_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ614208(NAD 83)
 JV1397
 JV1397                          SUPERSEDED SURVEY CONTROL
 JV1397
 JV1397  NGVD 29 (??/??/??)   43.16   (m)          141.6    (f) RESET       3  
 JV1397
 JV1397.Superseded values are not recommended for survey control.
 JV1397
 JV1397.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1397.See file dsdata.pdf to determine how the superseded data were derived.
 JV1397
 JV1397_MARKER: DB = BENCH MARK DISK
 JV1397_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1397_STAMPING: 141.602 B 36 RESET 1948
 JV1397_MARK LOGO: CGS
 JV1397_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1397
 JV1397  HISTORY     - Date     Condition        Report By
 JV1397  HISTORY     - 1948     MONUMENTED       CGS
 JV1397
 JV1397                          STATION DESCRIPTION
 JV1397
 JV1397'DESCRIBED BY COAST AND GEODETIC SURVEY 1948
 JV1397'AT CROWNSVILLE.
 JV1397'AT CROWNSVILLE, ANNE ARUNDEL COUNTY, ON THE PROPERTY OF THE
 JV1397'CROWNSVILLE STATE HOSPITAL, 45 FT. INSIDE OF A WIRE FENCE, APPROX.
 JV1397'100 FT. W OF THE POST OFFICE, NEAR TWO LARGE OAK TREES, SET IN
 JV1397'CONCRETE IN A 6 IN CLAY PIPE, NEARLY FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0942 ***********************************************************************
 HV0942  DESIGNATION -  B 37
 HV0942  PID         -  HV0942
 HV0942  STATE/COUNTY-  MD/CALVERT
 HV0942  COUNTRY     -  US
 HV0942  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0942
 HV0942                         *CURRENT SURVEY CONTROL
 HV0942  ______________________________________________________________________
 HV0942* NAD 83(1986) POSITION- 38 33 40.     (N) 076 35 56.     (W)   SCALED
 HV0942* NAVD 88 ORTHO HEIGHT -    37.982 (meters)      124.61  (feet) ADJUSTED
 HV0942  ______________________________________________________________________
 HV0942  GEOID HEIGHT    -        -33.776 (meters)                     GEOID18
 HV0942  DYNAMIC HEIGHT  -         37.959 (meters)      124.54  (feet) COMP
 HV0942  MODELED GRAVITY -    980,033.2   (mgal)                       NAVD 88
 HV0942
 HV0942  VERT ORDER      -  FIRST     CLASS II
 HV0942
 HV0942.The horizontal coordinates were scaled from a map and have
 HV0942.an estimated accuracy of +/- 6 seconds.
 HV0942
 HV0942.The orthometric height was determined by differential leveling and
 HV0942.adjusted by the NATIONAL GEODETIC SURVEY
 HV0942.in June 1991.
 HV0942
 HV0942.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0942.GEOID18 height accuracy estimate available here.
 HV0942
 HV0942.Click photographs - Photos may exist for this station.
 HV0942
 HV0942.The dynamic height is computed by dividing the NAVD 88
 HV0942.geopotential number by the normal gravity value computed on the
 HV0942.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0942.degrees latitude (g = 980.6199 gals.).
 HV0942
 HV0942.The modeled gravity was interpolated from observed gravity values.
 HV0942
 HV0942;                    North         East    Units  Estimated Accuracy
 HV0942;SPC MD       -    99,360.      434,960.      MT  (+/- 180 meters Scaled)
 HV0942
 HV0942_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH606692(NAD 83)
 HV0942
 HV0942                          SUPERSEDED SURVEY CONTROL
 HV0942
 HV0942  NGVD 29 (11/26/84)   38.270  (m)          125.56   (f) ADJUSTED    1 2
 HV0942
 HV0942.Superseded values are not recommended for survey control.
 HV0942
 HV0942.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0942.See file dsdata.pdf to determine how the superseded data were derived.
 HV0942
 HV0942_MARKER: DB = BENCH MARK DISK
 HV0942_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0942_STAMPING: B 37 1941
 HV0942_MARK LOGO: CGS
 HV0942_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0942+STABILITY: SURFACE MOTION
 HV0942
 HV0942  HISTORY     - Date     Condition        Report By
 HV0942  HISTORY     - 1941     MONUMENTED       CGS
 HV0942  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0942  HISTORY     - 19950625 MARK NOT FOUND   USPSQD
 HV0942
 HV0942                          STATION DESCRIPTION
 HV0942
 HV0942'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0942'2 MI N FROM PRINCE FREDERICK.
 HV0942'2.0 MILES NORTH ALONG STATE HIGHWAY 2 FROM THE OLD COUNTY COURTHOUSE
 HV0942'AT PRINCE FREDERICK, CALVERT COUNTY, ON THE OLD HIGHWAY, 57 FEET
 HV0942'SOUTHEAST OF THE SOUTHEAST CORNER OF A FARMHOUSE, 20.5 FEET
 HV0942'NORTH OF THE CENTER LINE OF A FARM LANE, 32.5 FEET WEST OF THE
 HV0942'CENTER LINE OF THE OLD HIGHWAY, AT A WHITE WOODEN WITNESS POST,
 HV0942'AND ABOUT 4 FEET HIGHER THAN THE HIGHWAY.  A STANDARD DISK,
 HV0942'STAMPED B 37 1941 AND SET IN THE TOP OF A CONCRETE POST.
 HV0942
 HV0942                          STATION RECOVERY (1971)
 HV0942
 HV0942'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0942'MARK NOT FOUND.
 HV0942
 HV0942                          STATION RECOVERY (1995)
 HV0942
 HV0942'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0942'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0322 ***********************************************************************
 HV0322  DESIGNATION -  B 38 RESET
 HV0322  PID         -  HV0322
 HV0322  STATE/COUNTY-  MD/ST MARYS
 HV0322  COUNTRY     -  US
 HV0322  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0322
 HV0322                         *CURRENT SURVEY CONTROL
 HV0322  ______________________________________________________________________
 HV0322* NAD 83(1986) POSITION- 38 16 23.     (N) 076 27 44.     (W)   SCALED
 HV0322* NAVD 88 ORTHO HEIGHT -    36.03  (+/-2cm)      118.2   (feet) VERTCON3
 HV0322  ______________________________________________________________________
 HV0322  GEOID HEIGHT    -        -34.463 (meters)                     GEOID18
 HV0322  VERT ORDER      -  THIRD (See Below)
 HV0322
 HV0322.The horizontal coordinates were scaled from a map and have
 HV0322.an estimated accuracy of +/- 6 seconds.
 HV0322
 HV0322.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0322.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0322
 HV0322.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0322.GEOID18 height accuracy estimate available here.
 HV0322
 HV0322.The vertical order pertains to the NGVD 29 superseded value.
 HV0322
 HV0322.Click photographs - Photos may exist for this station.
 HV0322
 HV0322;                    North         East    Units  Estimated Accuracy
 HV0322;SPC MD       -    67,450.      447,060.      MT  (+/- 180 meters Scaled)
 HV0322
 HV0322_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH720371(NAD 83)
 HV0322
 HV0322                          SUPERSEDED SURVEY CONTROL
 HV0322
 HV0322  NGVD 29 (??/??/??)   36.31   (m)          119.1    (f) RESET       3  
 HV0322
 HV0322.Superseded values are not recommended for survey control.
 HV0322
 HV0322.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0322.See file dsdata.pdf to determine how the superseded data were derived.
 HV0322
 HV0322_MARKER: DB = BENCH MARK DISK
 HV0322_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0322_STAMPING: B 38 RESET 1948
 HV0322_MARK LOGO: CGS
 HV0322_PROJECTION: PROJECTING 15 CENTIMETERS
 HV0322_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0322+STABILITY: SURFACE MOTION
 HV0322
 HV0322  HISTORY     - Date     Condition        Report By
 HV0322  HISTORY     - 1943     MONUMENTED       DOD
 HV0322  HISTORY     - 1943     GOOD             CGS
 HV0322  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0322
 HV0322                          STATION DESCRIPTION
 HV0322
 HV0322'DESCRIBED BY COAST AND GEODETIC SURVEY 1943
 HV0322'3 MI S FROM CALIFORNIA.
 HV0322'3.0 MILES SOUTH ALONG STATE HIGHWAY 235 FROM THE POST OFFICE AT
 HV0322'CALIFORNIA, ST. MARYS COUNTY, 32.4 FEET SOUTHEAST OF THE EAST
 HV0322'CORNER OF THE F.B. BARBER FARMHOUSE, AND 81.2 FEET SOUTHWEST
 HV0322'OF THE CENTER LINE OF THE HIGHWAY.  A STANDARD DISK, STAMPED
 HV0322'B RESET 1943 AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 HV0322'ABOUT 6 INCHES ABOVE GROUND.  NOTE-- THIS BENCH MARK WAS
 HV0322'ESTABLISHED AND ITS ELEVATION DETERMINED IN MAY 1943 BY ENGINEERS
 HV0322'OF THE CIVIL ENGINEER CORPS, U.S. NAVY.
 HV0322
 HV0322                          STATION RECOVERY (1971)
 HV0322
 HV0322'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0322'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1382 ***********************************************************************
 JV1382  DESIGNATION -  B 39
 JV1382  PID         -  JV1382
 JV1382  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1382  COUNTRY     -  US
 JV1382  USGS QUAD   -  ODENTON (2016)
 JV1382
 JV1382                         *CURRENT SURVEY CONTROL
 JV1382  ______________________________________________________________________
 JV1382* NAD 83(1986) POSITION- 39 04 20.0    (N) 076 43 19.0    (W)   HD_HELD2
 JV1382* NAVD 88 ORTHO HEIGHT -    43.212 (meters)      141.77  (feet) ADJUSTED
 JV1382  ______________________________________________________________________
 JV1382  GEOID HEIGHT    -        -32.626 (meters)                     GEOID18
 JV1382  DYNAMIC HEIGHT  -         43.188 (meters)      141.69  (feet) COMP
 JV1382  MODELED GRAVITY -    980,084.0   (mgal)                       NAVD 88
 JV1382
 JV1382  VERT ORDER      -  FIRST     CLASS II
 JV1382
 JV1382.The horizontal coordinates were established by autonomous hand held GPS
 JV1382.observations and have an estimated accuracy of +/- 10 meters.
 JV1382
 JV1382.The orthometric height was determined by differential leveling and
 JV1382.adjusted by the NATIONAL GEODETIC SURVEY
 JV1382.in June 1991.
 JV1382
 JV1382.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1382.GEOID18 height accuracy estimate available here.
 JV1382
 JV1382.Click photographs - Photos may exist for this station.
 JV1382
 JV1382.The dynamic height is computed by dividing the NAVD 88
 JV1382.geopotential number by the normal gravity value computed on the
 JV1382.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1382.degrees latitude (g = 980.6199 gals.).
 JV1382
 JV1382.The modeled gravity was interpolated from observed gravity values.
 JV1382
 JV1382;                    North         East    Units  Estimated Accuracy
 JV1382;SPC MD       -   156,060.      424,061.      MT  (+/- 10 meters HH2 GPS)
 JV1382
 JV1382_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5104026202(NAD 83)
 JV1382
 JV1382                          SUPERSEDED SURVEY CONTROL
 JV1382
 JV1382  NGVD 29 (11/26/84)   43.439  (m)          142.52   (f) ADJUSTED    1 2
 JV1382
 JV1382.Superseded values are not recommended for survey control.
 JV1382
 JV1382.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1382.See file dsdata.pdf to determine how the superseded data were derived.
 JV1382
 JV1382_MARKER: DB = BENCH MARK DISK
 JV1382_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1382+WITH SETTING: PAVEMENT
 JV1382_SP_SET: POLE BASE
 JV1382_STAMPING: B 39 1941
 JV1382_MARK LOGO: CGS
 JV1382_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1382+STABILITY: SURFACE MOTION
 JV1382
 JV1382  HISTORY     - Date     Condition        Report By
 JV1382  HISTORY     - 1941     MONUMENTED       CGS
 JV1382
 JV1382                          STATION DESCRIPTION
 JV1382
 JV1382'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1382'1.2 MI SW FROM ODENTON.
 JV1382'ABOUT 1.2 MILES SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1382'THE STATION AT ODENTON, ANNE ARUNDEL COUNTY, 25.4 FEET
 JV1382'NORTHEAST OF MILEPOST 115, AT A POWER-TRANSMISSION LINE POLE,
 JV1382'IN THE TOP OF THE SOUTH CORNER OF THE CONCRETE BASE, AND 8.4
 JV1382'FEET NORTHWEST OF THE NORTHWEST RAIL OF THE NORTHWEST TRACK.
 JV1382'A STANDARD DISK, STAMPED B 39 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0564 ***********************************************************************
 JV0564  DESIGNATION -  B 4
 JV0564  PID         -  JV0564
 JV0564  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0564  COUNTRY     -  US
 JV0564  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0564
 JV0564                         *CURRENT SURVEY CONTROL
 JV0564  ______________________________________________________________________
 JV0564* NAD 83(1986) POSITION- 39 16 55.     (N) 076 37 08.     (W)   SCALED
 JV0564* NAVD 88 ORTHO HEIGHT -     9.662 (meters)       31.70  (feet) ADJUSTED
 JV0564  ______________________________________________________________________
 JV0564  GEOID HEIGHT    -        -32.721 (meters)                     GEOID18
 JV0564  DYNAMIC HEIGHT  -          9.657 (meters)       31.68  (feet) COMP
 JV0564  MODELED GRAVITY -    980,103.7   (mgal)                       NAVD 88
 JV0564
 JV0564  VERT ORDER      -  FIRST     CLASS I
 JV0564
 JV0564.The horizontal coordinates were scaled from a map and have
 JV0564.an estimated accuracy of +/- 6 seconds.
 JV0564
 JV0564.The orthometric height was determined by differential leveling and
 JV0564.adjusted by the NATIONAL GEODETIC SURVEY
 JV0564.in June 1991.
 JV0564
 JV0564.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0564.GEOID18 height accuracy estimate available here.
 JV0564
 JV0564.Click photographs - Photos may exist for this station.
 JV0564
 JV0564.The dynamic height is computed by dividing the NAVD 88
 JV0564.geopotential number by the normal gravity value computed on the
 JV0564.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0564.degrees latitude (g = 980.6199 gals.).
 JV0564
 JV0564.The modeled gravity was interpolated from observed gravity values.
 JV0564
 JV0564;                    North         East    Units  Estimated Accuracy
 JV0564;SPC MD       -   179,380.      432,880.      MT  (+/- 180 meters Scaled)
 JV0564
 JV0564_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ603493(NAD 83)
 JV0564
 JV0564                          SUPERSEDED SURVEY CONTROL
 JV0564
 JV0564  NGVD 29 (11/26/84)    9.904  (m)           32.49   (f) ADJUSTED    1 1
 JV0564
 JV0564.Superseded values are not recommended for survey control.
 JV0564
 JV0564.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0564.See file dsdata.pdf to determine how the superseded data were derived.
 JV0564
 JV0564_MARKER: DB = BENCH MARK DISK
 JV0564_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0564_SP_SET: FOUNDATION
 JV0564_STAMPING: B 4 1933
 JV0564_MARK LOGO: CGS
 JV0564_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0564
 JV0564  HISTORY     - Date     Condition        Report By
 JV0564  HISTORY     - 1933     MONUMENTED       CGS
 JV0564  HISTORY     - 1971     GOOD             NGS
 JV0564
 JV0564                          STATION DESCRIPTION
 JV0564
 JV0564'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0564'AT BALTIMORE.
 JV0564'AT BALTIMORE, ON THE BALTIMORE AND OHIO RAILROAD, 200 YARDS
 JV0564'SOUTH OF CAMDEN STATION, 150 FEET EAST OF THE CUT LEADING TO THE
 JV0564'HOWARD STREET TUNNEL, 35 FEET NORTH OF THE WEST END OF THE
 JV0564'OVERLAND FREIGHT RECEIVING STATION (1933), AT THE LEE STREET
 JV0564'BRIDGE, AT THE SECOND STEEL PIER FROM THE EAST END, IN THE
 JV0564'TOP OF THE CONCRETE FOUNDATION, AND ABOUT 3 FEET HIGHER THAN
 JV0564'THE TRACK.  A STANDARD DISK, STAMPED B 4 1933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0687 ***********************************************************************
 HV0687  DESIGNATION -  B 41
 HV0687  PID         -  HV0687
 HV0687  STATE/COUNTY-  MD/ST MARYS
 HV0687  COUNTRY     -  US
 HV0687  USGS QUAD   -  LEONARDTOWN (2016)
 HV0687
 HV0687                         *CURRENT SURVEY CONTROL
 HV0687  ______________________________________________________________________
 HV0687* NAD 83(1986) POSITION- 38 21 11.     (N) 076 40 48.     (W)   SCALED
 HV0687* NAVD 88 ORTHO HEIGHT -    41.411 (meters)      135.86  (feet) POSTED
 HV0687  ______________________________________________________________________
 HV0687  GEOID HEIGHT    -        -33.778 (meters)                     GEOID18
 HV0687  DYNAMIC HEIGHT  -         41.39  (meters)      135.8   (feet) COMP
 HV0687  MODELED GRAVITY -    980,031.2   (mgal)                       NAVD 88
 HV0687
 HV0687  VERT ORDER      -  * POSTED, SEE BELOW
 HV0687
 HV0687.The horizontal coordinates were scaled from a map and have
 HV0687.an estimated accuracy of +/- 6 seconds.
 HV0687
 HV0687.The orthometric height was determined by differential leveling
 HV0687.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0687
 HV0687.* This is a POSTED BENCH MARK height.
 HV0687
 HV0687.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0687.GEOID18 height accuracy estimate available here.
 HV0687
 HV0687.Click photographs - Photos may exist for this station.
 HV0687
 HV0687.The dynamic height is computed by dividing the NAVD 88
 HV0687.geopotential number by the normal gravity value computed on the
 HV0687.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0687.degrees latitude (g = 980.6199 gals.).
 HV0687
 HV0687.The modeled gravity was interpolated from observed gravity values.
 HV0687
 HV0687;                    North         East    Units  Estimated Accuracy
 HV0687;SPC MD       -    76,240.      427,970.      MT  (+/- 180 meters Scaled)
 HV0687
 HV0687_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH532463(NAD 83)
 HV0687
 HV0687                          SUPERSEDED SURVEY CONTROL
 HV0687
 HV0687  NGVD 29 (11/26/84)   41.695  (m)          136.79   (f) ADJUSTED    1 2
 HV0687
 HV0687.Superseded values are not recommended for survey control.
 HV0687
 HV0687.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0687.See file dsdata.pdf to determine how the superseded data were derived.
 HV0687
 HV0687_MARKER: DB = BENCH MARK DISK
 HV0687_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0687_SP_SET: CULVERT
 HV0687_STAMPING: B 41 1941
 HV0687_MARK LOGO: CGS
 HV0687_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0687
 HV0687  HISTORY     - Date     Condition        Report By
 HV0687  HISTORY     - 1941     MONUMENTED       CGS
 HV0687  HISTORY     - 20010210 MARK NOT FOUND   USPSQD
 HV0687
 HV0687                          STATION DESCRIPTION
 HV0687
 HV0687'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0687'5.7 MI NW FROM LEONARDTOWN.
 HV0687'ABOUT 5.7 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0687'OFFICE AT LEONARDTOWN, SAINT MARYS COUNTY, ABOUT 0.1 MILE NORTHWEST
 HV0687'OF A SMALL WHITE FARMHOUSE SOUTHWEST OF THE HIGHWAY, ABOUT 250
 HV0687'FEET NORTHWEST OF THE JUNCTION OF THE OLD HIGHWAY, 56 FEET WEST OF
 HV0687'POWER-TRANSMISSION LINE POLE 836, AT A 12-INCH CONCRETE CULVERT,
 HV0687'IN THE TOP OF THE NORTHWEST CORNER OF THE SOUTHWEST HEAD WALL,
 HV0687'21 FEET SOUTHWEST OF THE CENTER LINE OF THE NEW HIGHWAY, AND 8
 HV0687'FEET NORTHEAST OF THE CENTER LINE OF THE OLD HIGHWAY.  A STANDARD
 HV0687'DISK, STAMPED B 41 1941.
 HV0687
 HV0687                          STATION RECOVERY (2001)
 HV0687
 HV0687'RECOVERY NOTE BY US POWER SQUADRON 2001
 HV0687'LOCATED THE VICINITY OF THE BENCHMARK WITH GPS, BUT NONE OF THE
 HV0687'REFERENCES COULD BE FOUND.  SUSPECT THAT WIDENING OF THE HIGHWAY SINCE
 HV0687'LAST RECOVERY HAS COVERED THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0018 ***********************************************************************
 JW0018  DESIGNATION -  B 43
 JW0018  PID         -  JW0018
 JW0018  STATE/COUNTY-  MD/WASHINGTON
 JW0018  COUNTRY     -  US
 JW0018  USGS QUAD   -  HANCOCK (2016)
 JW0018
 JW0018                         *CURRENT SURVEY CONTROL
 JW0018  ______________________________________________________________________
 JW0018* NAD 83(1986) POSITION- 39 41 04.     (N) 078 11 57.     (W)   SCALED
 JW0018* NAVD 88 ORTHO HEIGHT -   138.600 (meters)      454.72  (feet) ADJUSTED
 JW0018  ______________________________________________________________________
 JW0018  GEOID HEIGHT    -        -33.998 (meters)                     GEOID18
 JW0018  DYNAMIC HEIGHT  -        138.520 (meters)      454.46  (feet) COMP
 JW0018  MODELED GRAVITY -    980,048.5   (mgal)                       NAVD 88
 JW0018
 JW0018  VERT ORDER      -  FIRST     CLASS II
 JW0018
 JW0018.The horizontal coordinates were scaled from a map and have
 JW0018.an estimated accuracy of +/- 6 seconds.
 JW0018
 JW0018.The orthometric height was determined by differential leveling and
 JW0018.adjusted by the NATIONAL GEODETIC SURVEY
 JW0018.in June 1991.
 JW0018
 JW0018.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0018.GEOID18 height accuracy estimate available here.
 JW0018
 JW0018.Click photographs - Photos may exist for this station.
 JW0018
 JW0018.The dynamic height is computed by dividing the NAVD 88
 JW0018.geopotential number by the normal gravity value computed on the
 JW0018.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0018.degrees latitude (g = 980.6199 gals.).
 JW0018
 JW0018.The modeled gravity was interpolated from observed gravity values.
 JW0018
 JW0018;                    North         East    Units  Estimated Accuracy
 JW0018;SPC MD       -   224,670.      297,130.      MT  (+/- 180 meters Scaled)
 JW0018
 JW0018_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD401964(NAD 83)
 JW0018
 JW0018                          SUPERSEDED SURVEY CONTROL
 JW0018
 JW0018  NGVD 29 (??/??/92)  138.806  (m)          455.40   (f) ADJ UNCH    1 2
 JW0018
 JW0018.Superseded values are not recommended for survey control.
 JW0018
 JW0018.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0018.See file dsdata.pdf to determine how the superseded data were derived.
 JW0018
 JW0018_MARKER: DB = BENCH MARK DISK
 JW0018_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JW0018_STAMPING: B 43 1941
 JW0018_MARK LOGO: CGS
 JW0018_PROJECTION: PROJECTING 15 CENTIMETERS
 JW0018_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0018_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0018+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2007
 JW0018
 JW0018  HISTORY     - Date     Condition        Report By
 JW0018  HISTORY     - 1941     MONUMENTED       CGS
 JW0018  HISTORY     - 20070915 GOOD             GEOCAC
 JW0018
 JW0018                          STATION DESCRIPTION
 JW0018
 JW0018'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0018'1.5 MI SW FROM HANCOCK.
 JW0018'1.5 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JW0018'THE STATION AT HANCOCK, 21 RAILS SOUTHWEST OF MILE-POST NO.
 JW0018'117, AT A PRIVATE ROAD CROSSING, ABOUT 6 FEET ABOVE THE TRACK
 JW0018'LEVEL, 35 FEET NORTHWEST OF THE NORTHWEST RAIL OF THE TRACK,
 JW0018'10 FEET SOUTHWEST OF THE CENTER-LINE OF THE PRIVATE ROAD, 38.4
 JW0018'FEET SOUTH OF THE SOUTHWEST CORNER OF THE HOUSE, 16 FEET EAST
 JW0018'OF A 6-INCH WALNUT TREE, 0.2 FOOT SOUTH OF A WHITE MARKER POST
 JW0018'STENCILED U.S.B.M.  A STANDARD DISK STAMPED B-43 1941 AND SET
 JW0018'IN THE TOP OF A PRE-CAST CONCRETE POST.
 JW0018
 JW0018                          STATION RECOVERY (2007)
 JW0018
 JW0018'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JW0018'1.5 MI SW FROM HANCOCK.
 JW0018'SOUTHWEST ALONG THE PAVED WESTERN MARYLAND RAIL TRAIL FROM HANCOCK,
 JW0018'SOUTHWEST OF MILE-POST NO. 117, AT A PRIVATE ROAD CROSSING, ABOUT 6
 JW0018'FEET ABOVE THE TRACK LEVEL, 38 FEET NORTHWEST OF THE CENTER-LINE OF
 JW0018'THE TRAIL, 10 FEET SOUTHWEST OF THE CENTER-LINE OF THE PRIVATE ROAD,
 JW0018'38.4 FEET SOUTH OF THE SOUTHWEST CORNER OF THE HOUSE, 16 FEET EAST
 JW0018'OF A 28-INCH WALNUT TREE.  A STANDARD DISK STAMPED B-43 1941 AND SET
 JW0018'IN THE TOP OF A PRE-CAST CONCRETE POST PROJECTING 6 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0724 ***********************************************************************
 JV0724  DESIGNATION -  B 44
 JV0724  PID         -  JV0724
 JV0724  STATE/COUNTY-  MD/HOWARD
 JV0724  COUNTRY     -  US
 JV0724  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0724
 JV0724                         *CURRENT SURVEY CONTROL
 JV0724  ______________________________________________________________________
 JV0724* NAD 83(1986) POSITION- 39 15 03.     (N) 076 45 54.     (W)   SCALED
 JV0724* NAVD 88 ORTHO HEIGHT -    33.050 (meters)      108.43  (feet) ADJUSTED
 JV0724  ______________________________________________________________________
 JV0724  GEOID HEIGHT    -        -32.321 (meters)                     GEOID18
 JV0724  DYNAMIC HEIGHT  -         33.033 (meters)      108.38  (feet) COMP
 JV0724  MODELED GRAVITY -    980,110.1   (mgal)                       NAVD 88
 JV0724
 JV0724  VERT ORDER      -  FIRST     CLASS II
 JV0724
 JV0724.The horizontal coordinates were scaled from a map and have
 JV0724.an estimated accuracy of +/- 6 seconds.
 JV0724
 JV0724.The orthometric height was determined by differential leveling and
 JV0724.adjusted by the NATIONAL GEODETIC SURVEY
 JV0724.in June 1991.
 JV0724
 JV0724.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0724.GEOID18 height accuracy estimate available here.
 JV0724
 JV0724.Click photographs - Photos may exist for this station.
 JV0724
 JV0724.The dynamic height is computed by dividing the NAVD 88
 JV0724.geopotential number by the normal gravity value computed on the
 JV0724.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0724.degrees latitude (g = 980.6199 gals.).
 JV0724
 JV0724.The modeled gravity was interpolated from observed gravity values.
 JV0724
 JV0724;                    North         East    Units  Estimated Accuracy
 JV0724;SPC MD       -   175,880.      420,290.      MT  (+/- 180 meters Scaled)
 JV0724
 JV0724_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ477460(NAD 83)
 JV0724
 JV0724                          SUPERSEDED SURVEY CONTROL
 JV0724
 JV0724  NGVD 29 (11/26/84)   33.272  (m)          109.16   (f) ADJUSTED    1 2
 JV0724
 JV0724.Superseded values are not recommended for survey control.
 JV0724
 JV0724.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0724.See file dsdata.pdf to determine how the superseded data were derived.
 JV0724
 JV0724_STAMPING: B 44 1941
 JV0724_MARK LOGO: CGS
 JV0724
 JV0724  HISTORY     - Date     Condition        Report By
 JV0724  HISTORY     - 1941     MONUMENTED       CGS
 JV0724  HISTORY     - 1984     GOOD             LOCSUR
 JV0724  HISTORY     - 1985     GOOD             NGS
 JV0724  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV0724  HISTORY     - 20180716 MARK NOT FOUND   MDDNR
 JV0724
 JV0724                          STATION DESCRIPTION
 JV0724
 JV0724'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0724'2.1 MI SE FROM ELLICOTT CITY.
 JV0724'ABOUT 2.1 MILES SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0724'FROM ELLICOTT CITY, HOWARD COUNTY, ABOUT 600 FEET WEST OF THE
 JV0724'WEST ENTRANCE TO THE TUNNEL AT ILCHESTER, AT A BRIDGE OVER
 JV0724'PATAPSCO RIVER AND A HIGHWAY, IN THE TOP OF THE WEST STONE
 JV0724'ABUTMENT, 6 INCHES FROM THE EAST EDGE, BETWEEN THE TRACKS, AND
 JV0724'ABOUT 1.6 FEET LOWER THAN THE TOP OF THE RAIL.  A STANDARD DISK,
 JV0724'STAMPED B 44 1941.
 JV0724
 JV0724                          STATION RECOVERY (1984)
 JV0724
 JV0724'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1984
 JV0724'RECOVERED IN GOOD CONDITION.
 JV0724
 JV0724                          STATION RECOVERY (1985)
 JV0724
 JV0724'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985
 JV0724'RECOVERED IN GOOD CONDITION.
 JV0724
 JV0724                          STATION RECOVERY (2003)
 JV0724
 JV0724'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0724'NOT FOUND.  AN 8 INCH BY 8 INCH WOOD TIMBER WAS FOUND LYING ACROSS THE
 JV0724'TOP OF THE ABUTMENT UNDER THE TRACKS POSSIBLY COVERING THE MONUMENT.
 JV0724
 JV0724                          STATION RECOVERY (2018)
 JV0724
 JV0724'RECOVERY NOTE BY MD DEPT OF NAT RES 2018 (WAC)
 JV0724'A SET 8X8 RAILROAD TIE STILL BLOCKS ACCESS TO THE DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0754 ***********************************************************************
 JV0754  DESIGNATION -  B 45 RESET
 JV0754  PID         -  JV0754
 JV0754  STATE/COUNTY-  MD/CARROLL
 JV0754  COUNTRY     -  US
 JV0754  USGS QUAD   -  FINKSBURG (2016)
 JV0754
 JV0754                         *CURRENT SURVEY CONTROL
 JV0754  ______________________________________________________________________
 JV0754* NAD 83(1986) POSITION- 39 23 12.     (N) 076 57 53.     (W)   SCALED
 JV0754* NAVD 88 ORTHO HEIGHT -   165.95  (meters)      544.5   (feet) RESET
 JV0754  ______________________________________________________________________
 JV0754  GEOID HEIGHT    -        -31.952 (meters)                     GEOID18
 JV0754  VERT ORDER      -  THIRD
 JV0754
 JV0754.The horizontal coordinates were scaled from a map and have
 JV0754.an estimated accuracy of +/- 6 seconds.
 JV0754
 JV0754.The orthometric height was computed from unverified reset data.
 JV0754
 JV0754.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0754.GEOID18 height accuracy estimate available here.
 JV0754
 JV0754.Click photographs - Photos may exist for this station.
 JV0754
 JV0754;                    North         East    Units  Estimated Accuracy
 JV0754;SPC MD       -   190,930.      403,040.      MT  (+/- 180 meters Scaled)
 JV0754
 JV0754_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ307615(NAD 83)
 JV0754
 JV0754                          SUPERSEDED SURVEY CONTROL
 JV0754
 JV0754  NGVD 29 (??/??/??)  166.16   (m)          545.1    (f) RESET       3  
 JV0754
 JV0754.Superseded values are not recommended for survey control.
 JV0754
 JV0754.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0754.See file dsdata.pdf to determine how the superseded data were derived.
 JV0754
 JV0754_MARKER: DB = BENCH MARK DISK
 JV0754_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0754_STAMPING: B 45 1941 RESET 1957
 JV0754_MARK LOGO: CGS
 JV0754_PROJECTION: FLUSH
 JV0754_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0754+STABILITY: SURFACE MOTION
 JV0754
 JV0754  HISTORY     - Date     Condition        Report By
 JV0754  HISTORY     - 1957     MONUMENTED       MDBCSM
 JV0754
 JV0754                          STATION DESCRIPTION
 JV0754
 JV0754'DESCRIBED BY MD BUR SURV AND MAPS 1957
 JV0754'2 MI N FROM SYKESVILLE.
 JV0754'STATION IS APPROXIMATELY 2 MILES NORTH ALONG MARYLAND ROUTE 32 FROM
 JV0754'THE BALTIMORE AND OHIO R.R. STATION AT SYKESVILLE, ON THE LAWN
 JV0754'OF A TENANT HOUSE AT THE WEST ENTRANCE TO THE SPRINGFIELD STATE
 JV0754'HOSPITAL, 50 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE HOUSE,
 JV0754'39.1 FEET SOUTHEAST OF A 20-INCH MAPLE TREE, 33.5 FEET EAST OF A
 JV0754'TELEPHONE POLE, 24.6 FEET EAST-NORTHEAST OF A 20-INCH MAPLE
 JV0754'TREE AND SET IN A CONCRETE POST FLUSH WITH THE GROUND AND IN
 JV0754'THE EDGE OF THE LAWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2144 ***********************************************************************
 JV2144  DESIGNATION -  B 46
 JV2144  PID         -  JV2144
 JV2144  STATE/COUNTY-  MD/FREDERICK
 JV2144  COUNTRY     -  US
 JV2144  USGS QUAD   -  URBANA (2016)
 JV2144
 JV2144                         *CURRENT SURVEY CONTROL
 JV2144  ______________________________________________________________________
 JV2144* NAD 83(1986) POSITION- 39 21 44.     (N) 077 21 00.     (W)   SCALED
 JV2144* NAVD 88 ORTHO HEIGHT -    94.536 (meters)      310.16  (feet) ADJUSTED
 JV2144  ______________________________________________________________________
 JV2144  GEOID HEIGHT    -        -32.433 (meters)                     GEOID18
 JV2144  DYNAMIC HEIGHT  -         94.485 (meters)      309.99  (feet) COMP
 JV2144  MODELED GRAVITY -    980,089.1   (mgal)                       NAVD 88
 JV2144
 JV2144  VERT ORDER      -  FIRST     CLASS II
 JV2144
 JV2144.The horizontal coordinates were scaled from a map and have
 JV2144.an estimated accuracy of +/- 6 seconds.
 JV2144
 JV2144.The orthometric height was determined by differential leveling and
 JV2144.adjusted by the NATIONAL GEODETIC SURVEY
 JV2144.in June 1991.
 JV2144
 JV2144.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2144.GEOID18 height accuracy estimate available here.
 JV2144
 JV2144.Click photographs - Photos may exist for this station.
 JV2144
 JV2144.The dynamic height is computed by dividing the NAVD 88
 JV2144.geopotential number by the normal gravity value computed on the
 JV2144.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2144.degrees latitude (g = 980.6199 gals.).
 JV2144
 JV2144.The modeled gravity was interpolated from observed gravity values.
 JV2144
 JV2144;                    North         East    Units  Estimated Accuracy
 JV2144;SPC MD       -   188,280.      369,840.      MT  (+/- 180 meters Scaled)
 JV2144
 JV2144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ975596(NAD 83)
 JV2144
 JV2144                          SUPERSEDED SURVEY CONTROL
 JV2144
 JV2144  NGVD 29 (11/26/84)   94.754  (m)          310.87   (f) ADJUSTED    1 2
 JV2144
 JV2144.Superseded values are not recommended for survey control.
 JV2144
 JV2144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2144.See file dsdata.pdf to determine how the superseded data were derived.
 JV2144
 JV2144_MARKER: DB = BENCH MARK DISK
 JV2144_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2144_SP_SET: BRIDGE
 JV2144_STAMPING: B 46 1941
 JV2144_MARK LOGO: CGS
 JV2144_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2144
 JV2144  HISTORY     - Date     Condition        Report By
 JV2144  HISTORY     - 1941     MONUMENTED       CGS
 JV2144
 JV2144                          STATION DESCRIPTION
 JV2144
 JV2144'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2144'2.8 MI E FROM FREDERICK JUNCTION.
 JV2144'ABOUT 2.8 MILES EAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2144'THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, ABOUT 2.0
 JV2144'MILES SOUTHWEST OF IJAMSVILLE, 20.3 FEET SOUTHWEST OF THE SIXTH
 JV2144'POLE WEST OF MILEPOST 55, AT BRIDGE 34, IN THE TOP OF THE NORTH
 JV2144'ABUTMENT, 2.0 FEET WEST OF THE EAST END, 6.5 FEET EAST OF THE
 JV2144'EAST RAIL OF THE EAST-BOUND TRACK, AND ABOUT 0.6 FOOT LOWER THAN
 JV2144'THE TOP OF THE RAIL.  A STANDARD DISK, STAMPED B 46 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0391 ***********************************************************************
 JW0391  DESIGNATION -  B 47
 JW0391  PID         -  JW0391
 JW0391  STATE/COUNTY-  MD/ALLEGANY
 JW0391  COUNTRY     -  US
 JW0391  USGS QUAD   -  PATTERSON CREEK (2016)
 JW0391
 JW0391                         *CURRENT SURVEY CONTROL
 JW0391  ______________________________________________________________________
 JW0391* NAD 83(1986) POSITION- 39 33 36.     (N) 078 42 19.     (W)   SCALED
 JW0391* NAVD 88 ORTHO HEIGHT -   188.969 (meters)      619.98  (feet) ADJUSTED
 JW0391  ______________________________________________________________________
 JW0391  GEOID HEIGHT    -        -32.958 (meters)                     GEOID18
 JW0391  DYNAMIC HEIGHT  -        188.857 (meters)      619.61  (feet) COMP
 JW0391  MODELED GRAVITY -    980,033.2   (mgal)                       NAVD 88
 JW0391
 JW0391  VERT ORDER      -  FIRST     CLASS II
 JW0391
 JW0391.The horizontal coordinates were scaled from a map and have
 JW0391.an estimated accuracy of +/- 6 seconds.
 JW0391
 JW0391.The orthometric height was determined by differential leveling and
 JW0391.adjusted by the NATIONAL GEODETIC SURVEY
 JW0391.in June 1991.
 JW0391
 JW0391.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0391.GEOID18 height accuracy estimate available here.
 JW0391
 JW0391.Click photographs - Photos may exist for this station.
 JW0391
 JW0391.The dynamic height is computed by dividing the NAVD 88
 JW0391.geopotential number by the normal gravity value computed on the
 JW0391.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0391.degrees latitude (g = 980.6199 gals.).
 JW0391
 JW0391.The modeled gravity was interpolated from observed gravity values.
 JW0391
 JW0391;                    North         East    Units  Estimated Accuracy
 JW0391;SPC MD       -   211,550.      253,460.      MT  (+/- 180 meters Scaled)
 JW0391
 JW0391_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD971814(NAD 83)
 JW0391
 JW0391                          SUPERSEDED SURVEY CONTROL
 JW0391
 JW0391  NGVD 29 (??/??/92)  189.162  (m)          620.61   (f) ADJ UNCH    1 2
 JW0391
 JW0391.Superseded values are not recommended for survey control.
 JW0391
 JW0391.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0391.See file dsdata.pdf to determine how the superseded data were derived.
 JW0391
 JW0391_MARKER: DB = BENCH MARK DISK
 JW0391_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0391_SP_SET: SIGNAL TOWER
 JW0391_STAMPING: B 47 1941
 JW0391_MARK LOGO: CGS
 JW0391_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0391
 JW0391  HISTORY     - Date     Condition        Report By
 JW0391  HISTORY     - 1941     MONUMENTED       CGS
 JW0391
 JW0391                          STATION DESCRIPTION
 JW0391
 JW0391'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0391'6.1 MI NW FROM OLDTOWN.
 JW0391'6.1 MILES NORTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0391'STATION AT OLDTOWN, 4 1/2 RAILS NORTHWEST OF MILE-POST NO. 157,
 JW0391'SET IN THE SOUTH CORNER OF SIGNAL TOWER NO. A-1570, 15 RAILS
 JW0391'SOUTHEAST OF A WOODEN OVER-HEAD BRIDGE, AT THE SOUTHEAST END OF
 JW0391'A DEEP FILL, 7.7 FEET NORTHEAST OF THE NORTHEAST RAIL OF THE
 JW0391'TRACK.  A STANDARD DISK STAMPED B-47 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0659 ***********************************************************************
 HV0659  DESIGNATION -  B 48
 HV0659  PID         -  HV0659
 HV0659  STATE/COUNTY-  MD/ST MARYS
 HV0659  COUNTRY     -  US
 HV0659  USGS QUAD   -  ROCK POINT (2016)
 HV0659
 HV0659                         *CURRENT SURVEY CONTROL
 HV0659  ______________________________________________________________________
 HV0659* NAD 83(1986) POSITION- 38 18 32.     (N) 076 47 58.     (W)   SCALED
 HV0659* NAVD 88 ORTHO HEIGHT -    43.293 (meters)      142.04  (feet) ADJUSTED
 HV0659  ______________________________________________________________________
 HV0659  GEOID HEIGHT    -        -33.695 (meters)                     GEOID18
 HV0659  DYNAMIC HEIGHT  -         43.266 (meters)      141.95  (feet) COMP
 HV0659  MODELED GRAVITY -    980,016.9   (mgal)                       NAVD 88
 HV0659
 HV0659  VERT ORDER      -  SECOND    CLASS 0
 HV0659
 HV0659.The horizontal coordinates were scaled from a map and have
 HV0659.an estimated accuracy of +/- 6 seconds.
 HV0659
 HV0659.The orthometric height was determined by differential leveling and
 HV0659.adjusted by the NATIONAL GEODETIC SURVEY
 HV0659.in June 1991.
 HV0659
 HV0659.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0659.GEOID18 height accuracy estimate available here.
 HV0659
 HV0659.Click photographs - Photos may exist for this station.
 HV0659
 HV0659.The dynamic height is computed by dividing the NAVD 88
 HV0659.geopotential number by the normal gravity value computed on the
 HV0659.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0659.degrees latitude (g = 980.6199 gals.).
 HV0659
 HV0659.The modeled gravity was interpolated from observed gravity values.
 HV0659
 HV0659;                    North         East    Units  Estimated Accuracy
 HV0659;SPC MD       -    71,310.      417,540.      MT  (+/- 180 meters Scaled)
 HV0659
 HV0659_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH426416(NAD 83)
 HV0659
 HV0659                          SUPERSEDED SURVEY CONTROL
 HV0659
 HV0659  NGVD 29 (11/26/84)   43.570  (m)          142.95   (f) ADJUSTED    2 0
 HV0659
 HV0659.Superseded values are not recommended for survey control.
 HV0659
 HV0659.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0659.See file dsdata.pdf to determine how the superseded data were derived.
 HV0659
 HV0659_MARKER: DB = BENCH MARK DISK
 HV0659_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0659_SP_SET: CULVERT
 HV0659_STAMPING: B 48 1942
 HV0659_MARK LOGO: CGS
 HV0659_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0659
 HV0659  HISTORY     - Date     Condition        Report By
 HV0659  HISTORY     - 1942     MONUMENTED       CGS
 HV0659
 HV0659                          STATION DESCRIPTION
 HV0659
 HV0659'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0659'5.2 MI S FROM CHAPTICO.
 HV0659'THIS MARK IS ALONG HIGHWAY 238, ABOUT 5.2 MILES SOUTH FROM THE
 HV0659'INTERSECTION AT CHAPTICO, SAINT MARYS COUNTY, ABOUT 0.6 MILE NORTH
 HV0659'OF THE BUSHWOOD CHURCH, NEAR SEVERAL LARGE CEDARS, SET IN THE
 HV0659'SOUTH END OF THE EAST HEADWALL OF A LARGE CONCRETE CULVERT,
 HV0659'ABOUT 15 FEET EAST OF THE CENTER LINE OF THE ROAD AND ABOUT
 HV0659'6 INCHES HIGHER THAN THE LEVEL OF THE PAVEMENT, AND IS A STANDARD
 HV0659'DISK SET IN A DRILL HOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7948 ***********************************************************************
 HV7948  DESIGNATION -  B 48 RESET
 HV7948  PID         -  HV7948
 HV7948  STATE/COUNTY-  MD/ST MARYS
 HV7948  COUNTRY     -  US
 HV7948  USGS QUAD   -  ROCK POINT (2016)
 HV7948
 HV7948                         *CURRENT SURVEY CONTROL
 HV7948  ______________________________________________________________________
 HV7948* NAD 83(1986) POSITION- 38 18 32.     (N) 076 47 58.     (W)   SCALED
 HV7948* NAVD 88 ORTHO HEIGHT -    43.35  (meters)      142.2   (feet) RESET
 HV7948  ______________________________________________________________________
 HV7948  GEOID HEIGHT    -        -33.695 (meters)                     GEOID18
 HV7948  VERT ORDER      -  THIRD
 HV7948
 HV7948.The horizontal coordinates were scaled from a map and have
 HV7948.an estimated accuracy of +/- 6 seconds.
 HV7948
 HV7948.The orthometric height was computed from unverified reset data.
 HV7948
 HV7948.No vertical observational check was made to the station.
 HV7948
 HV7948.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7948.GEOID18 height accuracy estimate available here.
 HV7948
 HV7948.Click photographs - Photos may exist for this station.
 HV7948
 HV7948;                    North         East    Units  Estimated Accuracy
 HV7948;SPC MD       -    71,310.      417,540.      MT  (+/- 180 meters Scaled)
 HV7948
 HV7948_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH426416(NAD 83)
 HV7948
 HV7948                          SUPERSEDED SURVEY CONTROL
 HV7948
 HV7948  NGVD 29 (??/??/??)   43.62   (m)          143.1    (f) RESET       3  
 HV7948
 HV7948.Superseded values are not recommended for survey control.
 HV7948
 HV7948.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7948.See file dsdata.pdf to determine how the superseded data were derived.
 HV7948
 HV7948_MARKER: DV = VERTICAL CONTROL DISK
 HV7948_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7948_STAMPING: B 48 RESET 1977
 HV7948_MARK LOGO: NGS
 HV7948_PROJECTION: FLUSH
 HV7948_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7948+STABILITY: SURFACE MOTION
 HV7948
 HV7948  HISTORY     - Date     Condition        Report By
 HV7948  HISTORY     - 1977     MONUMENTED       NGS
 HV7948
 HV7948                          STATION DESCRIPTION
 HV7948
 HV7948'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 HV7948'5.1 MI S FROM CHAPTICO.
 HV7948'ABOUT 5.1 MI SOUTH ALONG MD STE 238 FROM THE JUNCTION OF MD RTE 234 AT
 HV7948'CHAPTICO, ABOUT 0.7 MI NORTH OF THE BUSHWOODD CHURCH (CATHOLIC),
 HV7948'12.8 FEET EAST OF CP POLE NUMBERED 57, 23.0 FT NORTH OF THE
 HV7948'CENTERLINE OF MD RTE 238, 40 FT NORTH OF CP UNDERGROUND CABLE
 HV7948'SPLICE BOX NUMBERED 57, SET IN THE TOP OF A CONCRETE POST ABOUT
 HV7948'LEVEL WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0706 ***********************************************************************
 HV0706  DESIGNATION -  B 49
 HV0706  PID         -  HV0706
 HV0706  STATE/COUNTY-  MD/CHARLES
 HV0706  COUNTRY     -  US
 HV0706  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0706
 HV0706                         *CURRENT SURVEY CONTROL
 HV0706  ______________________________________________________________________
 HV0706* NAD 83(1986) POSITION- 38 25 55.     (N) 076 51 39.     (W)   SCALED
 HV0706* NAVD 88 ORTHO HEIGHT -    45.361 (meters)      148.82  (feet) ADJUSTED
 HV0706  ______________________________________________________________________
 HV0706  GEOID HEIGHT    -        -33.524 (meters)                     GEOID18
 HV0706  DYNAMIC HEIGHT  -         45.332 (meters)      148.73  (feet) COMP
 HV0706  MODELED GRAVITY -    980,007.9   (mgal)                       NAVD 88
 HV0706
 HV0706  VERT ORDER      -  SECOND    CLASS 0
 HV0706
 HV0706.The horizontal coordinates were scaled from a map and have
 HV0706.an estimated accuracy of +/- 6 seconds.
 HV0706
 HV0706.The orthometric height was determined by differential leveling and
 HV0706.adjusted by the NATIONAL GEODETIC SURVEY
 HV0706.in June 1991.
 HV0706
 HV0706.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0706.GEOID18 height accuracy estimate available here.
 HV0706
 HV0706.Click photographs - Photos may exist for this station.
 HV0706
 HV0706.The dynamic height is computed by dividing the NAVD 88
 HV0706.geopotential number by the normal gravity value computed on the
 HV0706.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0706.degrees latitude (g = 980.6199 gals.).
 HV0706
 HV0706.The modeled gravity was interpolated from observed gravity values.
 HV0706
 HV0706;                    North         East    Units  Estimated Accuracy
 HV0706;SPC MD       -    84,960.      412,150.      MT  (+/- 180 meters Scaled)
 HV0706
 HV0706_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH375553(NAD 83)
 HV0706
 HV0706                          SUPERSEDED SURVEY CONTROL
 HV0706
 HV0706  NGVD 29 (11/26/84)   45.638  (m)          149.73   (f) ADJUSTED    2 0
 HV0706
 HV0706.Superseded values are not recommended for survey control.
 HV0706
 HV0706.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0706.See file dsdata.pdf to determine how the superseded data were derived.
 HV0706
 HV0706_MARKER: DB = BENCH MARK DISK
 HV0706_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0706_SP_SET: CULVERT
 HV0706_STAMPING: B 49 1942
 HV0706_MARK LOGO: CGS
 HV0706_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0706
 HV0706  HISTORY     - Date     Condition        Report By
 HV0706  HISTORY     - 1942     MONUMENTED       CGS
 HV0706
 HV0706                          STATION DESCRIPTION
 HV0706
 HV0706'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0706'1.5 MI N FROM WICOMICO.
 HV0706'THIS MARK IS ALONG A TAR ROAD ABOUT 1.5 MILES NORTH OF THE HIGHWAY
 HV0706'JUNCTION AT WICOMICO, CHARLES COUNTY, 0.15 MILE NORTH OF A CONCRET
 HV0706'BRIDGE BETWEEN TWO STEEP HILLS, ACROSS THE HIGHWAY FROM AN
 HV0706'ABANDONED 1 STORY FARM HOUSE, IN THE NORTH END OF THE WEST
 HV0706'HEADWALL OF A CONCRETE CULVERT, AND IS A STANDARD DISK SET IN A
 HV0706'DRILL HOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1815 ***********************************************************************
 HV1815  DESIGNATION -  B 5
 HV1815  PID         -  HV1815
 HV1815  STATE/COUNTY-  MD/MONTGOMERY
 HV1815  COUNTRY     -  US
 HV1815  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1815
 HV1815                         *CURRENT SURVEY CONTROL
 HV1815  ______________________________________________________________________
 HV1815* NAD 83(1986) POSITION- 38 56 38.8    (N) 077 06 56.7    (W)   HD_HELD2
 HV1815* NAVD 88 ORTHO HEIGHT -    50.594 (meters)      165.99  (feet) ADJUSTED
 HV1815  ______________________________________________________________________
 HV1815  GEOID HEIGHT    -        -31.901 (meters)                     GEOID18
 HV1815  DYNAMIC HEIGHT  -         50.567 (meters)      165.90  (feet) COMP
 HV1815  MODELED GRAVITY -    980,093.3   (mgal)                       NAVD 88
 HV1815
 HV1815  VERT ORDER      -  FIRST     CLASS II
 HV1815
 HV1815.The horizontal coordinates were established by autonomous hand held GPS
 HV1815.observations and have an estimated accuracy of +/- 10 meters.
 HV1815
 HV1815.The orthometric height was determined by differential leveling and
 HV1815.adjusted by the NATIONAL GEODETIC SURVEY
 HV1815.in June 1991.
 HV1815
 HV1815.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1815.GEOID18 height accuracy estimate available here.
 HV1815
 HV1815.Click photographs - Photos may exist for this station.
 HV1815
 HV1815.The dynamic height is computed by dividing the NAVD 88
 HV1815.geopotential number by the normal gravity value computed on the
 HV1815.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1815.degrees latitude (g = 980.6199 gals.).
 HV1815
 HV1815.The modeled gravity was interpolated from observed gravity values.
 HV1815
 HV1815;                    North         East    Units  Estimated Accuracy
 HV1815;SPC MD       -   141,808.      389,966.      MT  (+/- 10 meters HH2 GPS)
 HV1815
 HV1815_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1664012703(NAD 83)
 HV1815
 HV1815                          SUPERSEDED SURVEY CONTROL
 HV1815
 HV1815  NGVD 29 (11/26/84)   50.812  (m)          166.71   (f) ADJUSTED    1 2
 HV1815
 HV1815.Superseded values are not recommended for survey control.
 HV1815
 HV1815.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1815.See file dsdata.pdf to determine how the superseded data were derived.
 HV1815
 HV1815_MARKER: DB = BENCH MARK DISK
 HV1815_SETTING: 39 = SET IN A TUNNEL
 HV1815_SP_SET: TUNNEL WALL
 HV1815_STAMPING: B 5 1933
 HV1815_MARK LOGO: CGS
 HV1815_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1815
 HV1815  HISTORY     - Date     Condition        Report By
 HV1815  HISTORY     - 1933     MONUMENTED       CGS
 HV1815  HISTORY     - 1953     GOOD             USGS
 HV1815  HISTORY     - 19950710 GOOD             USPSQD
 HV1815
 HV1815                          STATION DESCRIPTION
 HV1815
 HV1815'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1815'AT BROOKMONT.
 HV1815'AT BROOKMONT, MONTGOMERY COUNTY, ON THE GEORGETOWN BRANCH OF THE
 HV1815'BALTIMORE AND OHIO RAILROAD, 350 FEET SOUTHWEST OF THE INTAKE
 HV1815'LOCKS AT THE WEST END OF DALECARLIA RESERVOIR, 300 FEET SOUTH
 HV1815'OF STEEL BRIDGE NO. 14, 100 FEET NORTH OF THE CROSSING OF
 HV1815'MAC ARTHUR BOULEVARD, 10 FEET SOUTH OF THE NORTH PORTAL OF
 HV1815'DALECARLIA TUNNEL, INSIDE THE TUNNEL, IN THE BRICK FACING OF THE
 HV1815'WEST WALL, 10 FEET WEST OF THE CENTERLINE OF THE TRACK, AND 4.5
 HV1815'FEET ABOVE THE TOP OF THE RAIL.  A STANDARD DISK, STAMPED B 5 1933
 HV1815'AND SET VERTICALLY.
 HV1815
 HV1815                          STATION RECOVERY (1953)
 HV1815
 HV1815'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV1815'RECOVERED IN GOOD CONDITION.
 HV1815
 HV1815                          STATION RECOVERY (1995)
 HV1815
 HV1815'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV1815'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0733 ***********************************************************************
 HU0733  DESIGNATION -  B 51
 HU0733  PID         -  HU0733
 HU0733  STATE/COUNTY-  MD/DORCHESTER
 HU0733  COUNTRY     -  US
 HU0733  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU0733
 HU0733                         *CURRENT SURVEY CONTROL
 HU0733  ______________________________________________________________________
 HU0733* NAD 83(1986) POSITION- 38 29 31.     (N) 075 50 24.     (W)   SCALED
 HU0733* NAVD 88 ORTHO HEIGHT -     3.787 (meters)       12.42  (feet) ADJUSTED
 HU0733  ______________________________________________________________________
 HU0733  GEOID HEIGHT    -        -35.462 (meters)                     GEOID18
 HU0733  DYNAMIC HEIGHT  -          3.785 (meters)       12.42  (feet) COMP
 HU0733  MODELED GRAVITY -    980,015.9   (mgal)                       NAVD 88
 HU0733
 HU0733  VERT ORDER      -  SECOND    CLASS 0
 HU0733
 HU0733.The horizontal coordinates were scaled from a map and have
 HU0733.an estimated accuracy of +/- 6 seconds.
 HU0733
 HU0733.The orthometric height was determined by differential leveling and
 HU0733.adjusted by the NATIONAL GEODETIC SURVEY
 HU0733.in June 1991.
 HU0733
 HU0733.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0733.GEOID18 height accuracy estimate available here.
 HU0733
 HU0733.Click photographs - Photos may exist for this station.
 HU0733
 HU0733.The dynamic height is computed by dividing the NAVD 88
 HU0733.geopotential number by the normal gravity value computed on the
 HU0733.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0733.degrees latitude (g = 980.6199 gals.).
 HU0733
 HU0733.The modeled gravity was interpolated from observed gravity values.
 HU0733
 HU0733;                    North         East    Units  Estimated Accuracy
 HU0733;SPC MD       -    92,250.      501,200.      MT  (+/- 180 meters Scaled)
 HU0733
 HU0733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH267607(NAD 83)
 HU0733
 HU0733                          SUPERSEDED SURVEY CONTROL
 HU0733
 HU0733  NGVD 29 (11/26/84)    4.027  (m)           13.21   (f) ADJUSTED    2 0
 HU0733
 HU0733.Superseded values are not recommended for survey control.
 HU0733
 HU0733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0733.See file dsdata.pdf to determine how the superseded data were derived.
 HU0733
 HU0733_MARKER: DB = BENCH MARK DISK
 HU0733_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0733_STAMPING: B 51 1942
 HU0733_MARK LOGO: CGS
 HU0733_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0733+STABILITY: SURFACE MOTION
 HU0733
 HU0733  HISTORY     - Date     Condition        Report By
 HU0733  HISTORY     - 1942     MONUMENTED       CGS
 HU0733  HISTORY     - 1964     MARK NOT FOUND   CGS
 HU0733  HISTORY     - 1981     MARK NOT FOUND   USGS
 HU0733
 HU0733                          STATION DESCRIPTION
 HU0733
 HU0733'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0733'1 MI NW FROM VIENNA.
 HU0733'THIS MARK IS ABOUT 1 MILE NORTHWEST ALONG HIGHWAY NUMBER 213 FROM
 HU0733'THE RAILROAD STATION AT VIENNA, DORCHESTER COUNTY, AT THE
 HU0733'NORTHWEST CORNER OF A FENCED FIELD, ACROSS THE HIGHWAY SOUTHWEST
 HU0733'FROM AN IRON HIGHWAY MARKER NUMBER 170, 31 FEET SOUTH OF THE
 HU0733'CENTER LINE OF THE HIGHWAY, 1 FOOT EAST OF A WIRE FENCE, ABOUT 2
 HU0733'FEET NORTH OF A STANDARD REFERENCE POST AND IS A STANDARD DISK
 HU0733'SET IN THE TOP OF A CONCRETE POST.
 HU0733
 HU0733                          STATION RECOVERY (1964)
 HU0733
 HU0733'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HU0733'MARK NOT FOUND.
 HU0733
 HU0733                          STATION RECOVERY (1981)
 HU0733
 HU0733'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1981
 HU0733'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0464 ***********************************************************************
 HV0464  DESIGNATION -  B 52
 HV0464  PID         -  HV0464
 HV0464  STATE/COUNTY-  MD/DORCHESTER
 HV0464  COUNTRY     -  US
 HV0464  USGS QUAD   -  GOLDEN HILL (2016)
 HV0464
 HV0464                         *CURRENT SURVEY CONTROL
 HV0464  ______________________________________________________________________
 HV0464* NAD 83(1986) POSITION- 38 23 39.4    (N) 076 12 42.4    (W)   HD_HELD2
 HV0464* NAVD 88 ORTHO HEIGHT -     1.425 (meters)        4.68  (feet) ADJUSTED
 HV0464  ______________________________________________________________________
 HV0464  GEOID HEIGHT    -        -35.026 (meters)                     GEOID18
 HV0464  DYNAMIC HEIGHT  -          1.424 (meters)        4.67  (feet) COMP
 HV0464  MODELED GRAVITY -    980,007.1   (mgal)                       NAVD 88
 HV0464
 HV0464  VERT ORDER      -  SECOND    CLASS 0
 HV0464
 HV0464.The horizontal coordinates were established by autonomous hand held GPS
 HV0464.observations and have an estimated accuracy of +/- 10 meters.
 HV0464
 HV0464.The orthometric height was determined by differential leveling and
 HV0464.adjusted by the NATIONAL GEODETIC SURVEY
 HV0464.in June 1991.
 HV0464
 HV0464.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0464.GEOID18 height accuracy estimate available here.
 HV0464
 HV0464.Click photographs - Photos may exist for this station.
 HV0464
 HV0464.The dynamic height is computed by dividing the NAVD 88
 HV0464.geopotential number by the normal gravity value computed on the
 HV0464.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0464.degrees latitude (g = 980.6199 gals.).
 HV0464
 HV0464.The modeled gravity was interpolated from observed gravity values.
 HV0464
 HV0464;                    North         East    Units  Estimated Accuracy
 HV0464;SPC MD       -    81,065.      468,857.      MT  (+/- 10 meters HH2 GPS)
 HV0464
 HV0464_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9417950257(NAD 83)
 HV0464
 HV0464                          SUPERSEDED SURVEY CONTROL
 HV0464
 HV0464  NGVD 29 (11/26/84)    1.646  (m)            5.40   (f) ADJUSTED    2 0
 HV0464
 HV0464.Superseded values are not recommended for survey control.
 HV0464
 HV0464.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0464.See file dsdata.pdf to determine how the superseded data were derived.
 HV0464
 HV0464_MARKER: DB = BENCH MARK DISK
 HV0464_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0464_STAMPING: B 52 1942
 HV0464_MARK LOGO: CGS
 HV0464_PROJECTION: FLUSH
 HV0464_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0464+STABILITY: SURFACE MOTION
 HV0464_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0464+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2014
 HV0464
 HV0464  HISTORY     - Date     Condition        Report By
 HV0464  HISTORY     - 1942     MONUMENTED       CGS
 HV0464  HISTORY     - 1971     GOOD             NGS
 HV0464  HISTORY     - 20060225 GOOD             USPSQD
 HV0464  HISTORY     - 20070225 GOOD             USPSQD
 HV0464  HISTORY     - 20140320 GOOD             ARCSHE
 HV0464
 HV0464                          STATION DESCRIPTION
 HV0464
 HV0464'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0464'1 MI SE FROM GOLDEN HILL.
 HV0464'ABOUT 1.0 MILE SOUTHEAST ALONG STATE HIGHWAY 335 FROM THE SOUTH
 HV0464'JUNCTION OF SMITHVILLE ROAD AT GOLDEN HILL, 1.05 MILES
 HV0464'NORTHWEST OF THE JUNCTION OF THE HIGHWAY AND STATE HIGHWAY 336,
 HV0464'28 1/2 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 100
 HV0464'FEET SOUTH-SOUTHEAST OF THE SOUTH CORNER OF A BRICK BUILDING,
 HV0464'24.2 FEET SOUTH-SOUTHWEST OF THE SOUTH CORNER OF A METAL
 HV0464'BUILDING, 141 1/2 FEET EAST OF THE CENTER OF THE JUNCTION OF A
 HV0464'ROAD THAT LEADS SOUTHWEST, 0.9 FOOT NORTHWEST OF A METAL WITNESS
 HV0464'POST, ABOUT LEVEL WITH THE HIGHWAY, AND SET IN THE TOP OF A
 HV0464'CONCRETE POST PROJECTING 1 INCH.
 HV0464
 HV0464                          STATION RECOVERY (2006)
 HV0464
 HV0464'RECOVERY NOTE BY US POWER SQUADRON 2006 (NLH)
 HV0464'RECOVERED IN GOOD CONDITION.
 HV0464
 HV0464                          STATION RECOVERY (2007)
 HV0464
 HV0464'RECOVERY NOTE BY US POWER SQUADRON 2007 (NH)
 HV0464'RECOVERED IN GOOD CONDITION.
 HV0464
 HV0464                          STATION RECOVERY (2014)
 HV0464
 HV0464'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0464'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3359 ***********************************************************************
 JV3359  DESIGNATION -  B 54
 JV3359  PID         -  JV3359
 JV3359  STATE/COUNTY-  MD/WASHINGTON
 JV3359  COUNTRY     -  US
 JV3359  USGS QUAD   -  HAGERSTOWN (2016)
 JV3359
 JV3359                         *CURRENT SURVEY CONTROL
 JV3359  ______________________________________________________________________
 JV3359* NAD 83(1986) POSITION- 39 39 46.     (N) 077 42 03.     (W)   SCALED
 JV3359* NAVD 88 ORTHO HEIGHT -   164.627 (meters)      540.11  (feet) ADJUSTED
 JV3359  ______________________________________________________________________
 JV3359  GEOID HEIGHT    -        -34.148 (meters)                     GEOID18
 JV3359  DYNAMIC HEIGHT  -        164.530 (meters)      539.80  (feet) COMP
 JV3359  MODELED GRAVITY -    980,035.2   (mgal)                       NAVD 88
 JV3359
 JV3359  VERT ORDER      -  SECOND    CLASS 0
 JV3359
 JV3359.The horizontal coordinates were scaled from a map and have
 JV3359.an estimated accuracy of +/- 6 seconds.
 JV3359
 JV3359.The orthometric height was determined by differential leveling and
 JV3359.adjusted by the NATIONAL GEODETIC SURVEY
 JV3359.in June 1991.
 JV3359
 JV3359.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3359.GEOID18 height accuracy estimate available here.
 JV3359
 JV3359.Click photographs - Photos may exist for this station.
 JV3359
 JV3359.The dynamic height is computed by dividing the NAVD 88
 JV3359.geopotential number by the normal gravity value computed on the
 JV3359.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3359.degrees latitude (g = 980.6199 gals.).
 JV3359
 JV3359.The modeled gravity was interpolated from observed gravity values.
 JV3359
 JV3359;                    North         East    Units  Estimated Accuracy
 JV3359;SPC MD       -   221,820.      339,860.      MT  (+/- 180 meters Scaled)
 JV3359
 JV3359_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ683938(NAD 83)
 JV3359
 JV3359                          SUPERSEDED SURVEY CONTROL
 JV3359
 JV3359  NGVD 29 (11/26/84)  164.815  (m)          540.73   (f) ADJUSTED    2 0
 JV3359
 JV3359.Superseded values are not recommended for survey control.
 JV3359
 JV3359.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3359.See file dsdata.pdf to determine how the superseded data were derived.
 JV3359
 JV3359_MARKER: DB = BENCH MARK DISK
 JV3359_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV3359_SP_SET: BOX CULVERT
 JV3359_STAMPING: B 54 1942
 JV3359_MARK LOGO: CGS
 JV3359_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3359+STABILITY: SURFACE MOTION
 JV3359
 JV3359  HISTORY     - Date     Condition        Report By
 JV3359  HISTORY     - 1942     MONUMENTED       CGS
 JV3359  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3359
 JV3359                          STATION DESCRIPTION
 JV3359
 JV3359'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3359'2.2 MI NE FROM HAGERSTOWN.
 JV3359'2.2 MILES NORTHEAST ALONG STATE HIGHWAY NO. 60 FROM THE COURTHOUSE
 JV3359'AT HAGERSTOWN, SET IN THE TOP OF THE NORTHEAST WINGWALL OF A 10
 JV3359'FT BY 5 FT BOX CULVERT, AND 13.0 FEET EAST OF THE CENTER LINE
 JV3359'OF HIGHWAY 60.
 JV3359
 JV3359                          STATION RECOVERY (1998)
 JV3359
 JV3359'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3359'THE STATION WAS SEARCHED FOR AND NOT FOUND.  IT APPEARS A NEW BOX
 JV3359'CULVERT HAS BEEN CONSTRUCTED AT THE DESCRIBED LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3360 ***********************************************************************
 JV3360  DESIGNATION -  B 54 RESET
 JV3360  PID         -  JV3360
 JV3360  STATE/COUNTY-  MD/WASHINGTON
 JV3360  COUNTRY     -  US
 JV3360  USGS QUAD   -  HAGERSTOWN (2016)
 JV3360
 JV3360                         *CURRENT SURVEY CONTROL
 JV3360  ______________________________________________________________________
 JV3360* NAD 83(1986) POSITION- 39 39 46.     (N) 077 42 03.     (W)   SCALED
 JV3360* NAVD 88 ORTHO HEIGHT -   165.08  (meters)      541.6   (feet) RESET
 JV3360  ______________________________________________________________________
 JV3360  GEOID HEIGHT    -        -34.148 (meters)                     GEOID18
 JV3360  VERT ORDER      -  THIRD
 JV3360
 JV3360.The horizontal coordinates were scaled from a map and have
 JV3360.an estimated accuracy of +/- 6 seconds.
 JV3360
 JV3360.The orthometric height was computed from unverified reset data.
 JV3360
 JV3360.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3360.GEOID18 height accuracy estimate available here.
 JV3360
 JV3360.Click photographs - Photos may exist for this station.
 JV3360
 JV3360;                    North         East    Units  Estimated Accuracy
 JV3360;SPC MD       -   221,820.      339,860.      MT  (+/- 180 meters Scaled)
 JV3360
 JV3360_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ683938(NAD 83)
 JV3360
 JV3360                          SUPERSEDED SURVEY CONTROL
 JV3360
 JV3360  NGVD 29 (??/??/??)  165.27   (m)          542.2    (f) RESET       3  
 JV3360
 JV3360.Superseded values are not recommended for survey control.
 JV3360
 JV3360.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3360.See file dsdata.pdf to determine how the superseded data were derived.
 JV3360
 JV3360_MARKER: DB = BENCH MARK DISK
 JV3360_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3360_STAMPING: B 54 RESET 1951
 JV3360_MARK LOGO: CGS
 JV3360_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3360+STABILITY: SURFACE MOTION
 JV3360
 JV3360  HISTORY     - Date     Condition        Report By
 JV3360  HISTORY     - 1951     MONUMENTED       MDSRC
 JV3360  HISTORY     - 1979     MARK NOT FOUND   NGS
 JV3360  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3360
 JV3360                          STATION DESCRIPTION
 JV3360
 JV3360'DESCRIBED BY MD STATE ROADS COMM 1951
 JV3360'2.2 MI NE FROM HAGERSTOWN.
 JV3360'2.2 MILES NORTHEAST ALONG STATE HIGHWAY 60 FROM THE COURTHOUSE AT
 JV3360'HAGERSTOWN, WASHINGTON COUNTY, NEAR A SMALL CREEK, AT THE ROADBED
 JV3360'OF AN ABANDONED TROLLEY LINE, AND 58 FEET WEST OF THE CENTERLINE
 JV3360'OF THE HIGHWAY.  A STANDARD DISK, STAMPED B 54 RESET 1951 AND SET
 JV3360'IN THE TOP OF A CONCRETE POST.
 JV3360
 JV3360                          STATION RECOVERY (1979)
 JV3360
 JV3360'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3360'NOTE--THE AREA IS NOW ALL PAVED, AND A SERVICE STATION
 JV3360'STANDS WHERE THE MARK SHOULD HAVE BEEN.
 JV3360
 JV3360                          STATION RECOVERY (1998)
 JV3360
 JV3360'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3360'THE STATION WAS SEARCHED FOR AND NOT FOUND.  THE DESCRIBED LOCATION IS
 JV3360'NOW A MACADAM PARKING LOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0070 ***********************************************************************
 JW0070  DESIGNATION -  B 55
 JW0070  PID         -  JW0070
 JW0070  STATE/COUNTY-  MD/WASHINGTON
 JW0070  COUNTRY     -  US
 JW0070  USGS QUAD   -  CHERRY RUN (2016)
 JW0070
 JW0070                         *CURRENT SURVEY CONTROL
 JW0070  ______________________________________________________________________
 JW0070* NAD 83(1986) POSITION- 39 41 35.     (N) 078 05 47.     (W)   SCALED
 JW0070* NAVD 88 ORTHO HEIGHT -   139.255 (meters)      456.87  (feet) ADJUSTED
 JW0070  ______________________________________________________________________
 JW0070  GEOID HEIGHT    -        -34.147 (meters)                     GEOID18
 JW0070  DYNAMIC HEIGHT  -        139.173 (meters)      456.60  (feet) COMP
 JW0070  MODELED GRAVITY -    980,042.9   (mgal)                       NAVD 88
 JW0070
 JW0070  VERT ORDER      -  SECOND    CLASS 0
 JW0070
 JW0070.The horizontal coordinates were scaled from a map and have
 JW0070.an estimated accuracy of +/- 6 seconds.
 JW0070
 JW0070.The orthometric height was determined by differential leveling and
 JW0070.adjusted by the NATIONAL GEODETIC SURVEY
 JW0070.in June 1991.
 JW0070
 JW0070.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0070.GEOID18 height accuracy estimate available here.
 JW0070
 JW0070.Click photographs - Photos may exist for this station.
 JW0070
 JW0070.The dynamic height is computed by dividing the NAVD 88
 JW0070.geopotential number by the normal gravity value computed on the
 JW0070.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0070.degrees latitude (g = 980.6199 gals.).
 JW0070
 JW0070.The modeled gravity was interpolated from observed gravity values.
 JW0070
 JW0070;                    North         East    Units  Estimated Accuracy
 JW0070;SPC MD       -   225,520.      305,960.      MT  (+/- 180 meters Scaled)
 JW0070
 JW0070_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD489977(NAD 83)
 JW0070
 JW0070                          SUPERSEDED SURVEY CONTROL
 JW0070
 JW0070  NGVD 29 (??/??/92)  139.459  (m)          457.54   (f) ADJ UNCH    2 0
 JW0070
 JW0070.Superseded values are not recommended for survey control.
 JW0070
 JW0070.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0070.See file dsdata.pdf to determine how the superseded data were derived.
 JW0070
 JW0070_MARKER: DB = BENCH MARK DISK
 JW0070_SETTING: 66 = SET IN ROCK OUTCROP
 JW0070_STAMPING: B 55 1942
 JW0070_MARK LOGO: CGS
 JW0070_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW0070+STABILITY: POSITION/ELEVATION WELL
 JW0070
 JW0070  HISTORY     - Date     Condition        Report By
 JW0070  HISTORY     - 1942     MONUMENTED       CGS
 JW0070
 JW0070                          STATION DESCRIPTION
 JW0070
 JW0070'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JW0070'5.3 MI NE FROM HANCOCK.
 JW0070'4.3 MILES SOUTHEAST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0070'STATION AT HANCOCK, THENCE 1 MILE NORTHEAST ALONG COUNTY ROAD, AT
 JW0070'THE INTERSECTION OF THE MAIN ROAD AND A PRIVATE ROAD LEADING NORTH
 JW0070'TO A 2-STORY GREEN FARM HOUSE, 30 FEET NORTHWEST OF THE CENTER-LINE
 JW0070'OF THE MAIN ROAD, 43 FEET EAST OF THE CENTER-LINE OF THE PRIVATE
 JW0070'ROAD, 18 FEET NORTH OF THE NORTH CORNER OF THE NORTHWEST HEADWALL
 JW0070'OF A TWIN PIPE CULVERT UNDER MAIN ROAD.  A STANDARD DISK SET IN A
 JW0070'ROCK OUT-CROP, FLUSH WITH THE GROUND, STAMPED B 55 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0387 ***********************************************************************
 HU0387  DESIGNATION -  B 56
 HU0387  PID         -  HU0387
 HU0387  STATE/COUNTY-  MD/WORCESTER
 HU0387  COUNTRY     -  US
 HU0387  USGS QUAD   -  BERLIN (2016)
 HU0387
 HU0387                         *CURRENT SURVEY CONTROL
 HU0387  ______________________________________________________________________
 HU0387* NAD 83(1986) POSITION- 38 18 46.     (N) 075 11 21.     (W)   SCALED
 HU0387* NAVD 88 ORTHO HEIGHT -     3.017 (meters)        9.90  (feet) ADJUSTED
 HU0387  ______________________________________________________________________
 HU0387  GEOID HEIGHT    -        -36.057 (meters)                     GEOID18
 HU0387  DYNAMIC HEIGHT  -          3.015 (meters)        9.89  (feet) COMP
 HU0387  MODELED GRAVITY -    980,004.2   (mgal)                       NAVD 88
 HU0387
 HU0387  VERT ORDER      -  SECOND    CLASS 0
 HU0387
 HU0387.The horizontal coordinates were scaled from a map and have
 HU0387.an estimated accuracy of +/- 6 seconds.
 HU0387
 HU0387.The orthometric height was determined by differential leveling and
 HU0387.adjusted by the NATIONAL GEODETIC SURVEY
 HU0387.in June 1991.
 HU0387
 HU0387.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0387.GEOID18 height accuracy estimate available here.
 HU0387
 HU0387.Click photographs - Photos may exist for this station.
 HU0387
 HU0387.The dynamic height is computed by dividing the NAVD 88
 HU0387.geopotential number by the normal gravity value computed on the
 HU0387.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0387.degrees latitude (g = 980.6199 gals.).
 HU0387
 HU0387.The modeled gravity was interpolated from observed gravity values.
 HU0387
 HU0387;                    North         East    Units  Estimated Accuracy
 HU0387;SPC MD       -    73,290.      558,360.      MT  (+/- 180 meters Scaled)
 HU0387
 HU0387_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH834405(NAD 83)
 HU0387
 HU0387                          SUPERSEDED SURVEY CONTROL
 HU0387
 HU0387  NGVD 29 (11/26/84)    3.263  (m)           10.71   (f) ADJUSTED    2 0
 HU0387
 HU0387.Superseded values are not recommended for survey control.
 HU0387
 HU0387.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0387.See file dsdata.pdf to determine how the superseded data were derived.
 HU0387
 HU0387_MARKER: DB = BENCH MARK DISK
 HU0387_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0387_SP_SET: CULVERT
 HU0387_STAMPING: B 56 1942
 HU0387_MARK LOGO: CGS
 HU0387_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0387
 HU0387  HISTORY     - Date     Condition        Report By
 HU0387  HISTORY     - 1942     MONUMENTED       CGS
 HU0387  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU0387  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU0387
 HU0387                          STATION DESCRIPTION
 HU0387
 HU0387'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0387'2.1 MI SE FROM BERLIN.
 HU0387'2.1 MILES SOUTHEAST ALONG STATE HIGHWAY 376 FROM THE CALVIN B.
 HU0387'TAYLOR BANKING CO. AT BERLIN, 108.2 FEET SOUTH ACROSS THE HIGHWAY
 HU0387'FROM POLE Q 1, 34 FEET WEST OF A DIRT ROAD LEADING TO A FARMHOUSE,
 HU0387'AT A CULVERT, IN THE TOP OF THE SOUTHWEST END OF THE SOUTH CONCRETE
 HU0387'HEADWALL AND 14.9 FEET SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY.
 HU0387'A STANDARD DISK, STAMPED B 56 1942.  NOTE-- THE CULVERT AND ROAD
 HU0387'HAVE BEEN WIDENED AT THIS POINT.
 HU0387
 HU0387                          STATION RECOVERY (2003)
 HU0387
 HU0387'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0387'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0306 ***********************************************************************
 HU0306  DESIGNATION -  B 58
 HU0306  PID         -  HU0306
 HU0306  STATE/COUNTY-  MD/WORCESTER
 HU0306  COUNTRY     -  US
 HU0306  USGS QUAD   -  BOXIRON (2016)
 HU0306
 HU0306                         *CURRENT SURVEY CONTROL
 HU0306  ______________________________________________________________________
 HU0306* NAD 83(1986) POSITION- 38 06 40.     (N) 075 19 24.     (W)   SCALED
 HU0306* NAVD 88 ORTHO HEIGHT -     4.893 (meters)       16.05  (feet) ADJUSTED
 HU0306  ______________________________________________________________________
 HU0306  GEOID HEIGHT    -        -36.326 (meters)                     GEOID18
 HU0306  DYNAMIC HEIGHT  -          4.890 (meters)       16.04  (feet) COMP
 HU0306  MODELED GRAVITY -    979,978.5   (mgal)                       NAVD 88
 HU0306
 HU0306  VERT ORDER      -  SECOND    CLASS I
 HU0306
 HU0306.The horizontal coordinates were scaled from a map and have
 HU0306.an estimated accuracy of +/- 6 seconds.
 HU0306
 HU0306.The orthometric height was determined by differential leveling and
 HU0306.adjusted by the NATIONAL GEODETIC SURVEY
 HU0306.in June 1991.
 HU0306
 HU0306.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0306.GEOID18 height accuracy estimate available here.
 HU0306
 HU0306.Click photographs - Photos may exist for this station.
 HU0306
 HU0306.The dynamic height is computed by dividing the NAVD 88
 HU0306.geopotential number by the normal gravity value computed on the
 HU0306.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0306.degrees latitude (g = 980.6199 gals.).
 HU0306
 HU0306.The modeled gravity was interpolated from observed gravity values.
 HU0306
 HU0306;                    North         East    Units  Estimated Accuracy
 HU0306;SPC MD       -    50,690.      547,040.      MT  (+/- 180 meters Scaled)
 HU0306
 HU0306_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH716181(NAD 83)
 HU0306
 HU0306                          SUPERSEDED SURVEY CONTROL
 HU0306
 HU0306  NGVD 29 (11/26/84)    5.136  (m)           16.85   (f) ADJUSTED    2 0
 HU0306
 HU0306.Superseded values are not recommended for survey control.
 HU0306
 HU0306.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0306.See file dsdata.pdf to determine how the superseded data were derived.
 HU0306
 HU0306_MARKER: DB = BENCH MARK DISK
 HU0306_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0306_STAMPING: B 58 1942
 HU0306_MARK LOGO: CGS
 HU0306_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0306_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0306+STABILITY: SURFACE MOTION
 HU0306_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0306+SATELLITE: SATELLITE OBSERVATIONS - December 17, 2003
 HU0306
 HU0306  HISTORY     - Date     Condition        Report By
 HU0306  HISTORY     - 1942     MONUMENTED       CGS
 HU0306  HISTORY     - 20031217 GOOD             MDSHA
 HU0306
 HU0306                          STATION DESCRIPTION
 HU0306
 HU0306'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0306'2.7 MI N FROM GIRDLETREE.
 HU0306'2.7 MILES NORTH ALONG STATE HIGHWAY 12 FROM THE POST OFFICE AT
 HU0306'GIRDLETREE, WORCESTER COUNTY, THENCE 4.6 MILES SOUTHEAST ALONG A
 HU0306'DIRT ROAD, 0.9 MILE SOUTHEAST OF THE JUNCTION OF A NEW COUNTY ROAD,
 HU0306'28 FEET SOUTHWEST OF THE CENTERLINE OF THE DIRT ROAD, 10.1 FEET
 HU0306'NORTH OF A 30-INCH BLAZED PINE TREE, AND ABOUT 3 FEET HIGHER THAN
 HU0306'THE ROAD.  A STANDARD DISK, STAMPED B 58 1942 AND SET IN THE TOP
 HU0306'OF A CONCRETE POST.
 HU0306
 HU0306                          STATION RECOVERY (2003)
 HU0306
 HU0306'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 HU0306'THE STATION IS LOCATED ABOUT 5.8 MI (9.33 KM) SOUTHEAST OF SNOW HILL,
 HU0306'AND 4.2 MI (6.76 KM) NORTHEAST OF GIRDLETREE. TO REACH THE STATION
 HU0306'FROM THE POST OFFICE IN GIRDLETREE, GO NORTH ALONG STATE HIGHWAY 12
 HU0306'FOR 3.5 MI (5.63 KM) TO AYERS LANE ROAD. TURN RIGHT AND GO SOUTHEAST
 HU0306'ALONG AYERS LANE ROAD FOR 2.7 MI (4.35 KM) TO SCOTTS LANDING ROAD.
 HU0306'CONTINUE SOUTHEAST ALONG SCOTTS LANDING ROAD FOR 1.05 MI (1.69 KM) TO
 HU0306'THE STATION ON THE RIGHT. THE STATION IS A STANDARD DISK SET IN THE
 HU0306'TOP OF A CONCRETE POST. IT IS ABOUT 350 FT (106.7 M) SOUTHEAST OF THE
 HU0306'DRIVEWAY LEADING TO HOUSE 7709, 23.5 FT (7.2 M) SOUTHWEST OF THE
 HU0306'CENTER OF THE ROAD, 10.0 FT (3.0 M) NORTHWEST OF A 30 INCH (76 CM)
 HU0306'PINE TREE, 1.5 FT (0.5 M) NORTHEAST OF A CARSONITE WITNESS POST, 177.0
 HU0306'FT (53.9 M) SOUTHEAST OF POWER POLE 832-367-6 AND ABOUT 4 FT (1.2 M)
 HU0306'HIGHER THAN THE ROAD AND PROJECTING 3 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0460 ***********************************************************************
 HU0460  DESIGNATION -  B 6
 HU0460  PID         -  HU0460
 HU0460  STATE/COUNTY-  MD/WICOMICO
 HU0460  COUNTRY     -  US
 HU0460  USGS QUAD   -  SALISBURY (2016)
 HU0460
 HU0460                         *CURRENT SURVEY CONTROL
 HU0460  ______________________________________________________________________
 HU0460* NAD 83(1986) POSITION- 38 20 20.     (N) 075 36 21.     (W)   SCALED
 HU0460* NAVD 88 ORTHO HEIGHT -     6.840 (meters)       22.44  (feet) ADJUSTED
 HU0460  ______________________________________________________________________
 HU0460  GEOID HEIGHT    -        -35.857 (meters)                     GEOID18
 HU0460  DYNAMIC HEIGHT  -          6.835 (meters)       22.42  (feet) COMP
 HU0460  MODELED GRAVITY -    980,002.7   (mgal)                       NAVD 88
 HU0460
 HU0460  VERT ORDER      -  FIRST     CLASS II
 HU0460
 HU0460.The horizontal coordinates were scaled from a map and have
 HU0460.an estimated accuracy of +/- 6 seconds.
 HU0460
 HU0460.The orthometric height was determined by differential leveling and
 HU0460.adjusted by the NATIONAL GEODETIC SURVEY
 HU0460.in June 1991.
 HU0460
 HU0460.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0460.GEOID18 height accuracy estimate available here.
 HU0460
 HU0460.Click photographs - Photos may exist for this station.
 HU0460
 HU0460.The dynamic height is computed by dividing the NAVD 88
 HU0460.geopotential number by the normal gravity value computed on the
 HU0460.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0460.degrees latitude (g = 980.6199 gals.).
 HU0460
 HU0460.The modeled gravity was interpolated from observed gravity values.
 HU0460
 HU0460;                    North         East    Units  Estimated Accuracy
 HU0460;SPC MD       -    75,550.      521,880.      MT  (+/- 180 meters Scaled)
 HU0460
 HU0460_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH470435(NAD 83)
 HU0460
 HU0460                          SUPERSEDED SURVEY CONTROL
 HU0460
 HU0460  NGVD 29 (11/26/84)    7.093  (m)           23.27   (f) ADJUSTED    1 2
 HU0460
 HU0460.Superseded values are not recommended for survey control.
 HU0460
 HU0460.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0460.See file dsdata.pdf to determine how the superseded data were derived.
 HU0460
 HU0460_MARKER: DB = BENCH MARK DISK
 HU0460_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0460_STAMPING: B 6 1935
 HU0460_MARK LOGO: CGS
 HU0460_PROJECTION: FLUSH
 HU0460_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0460+STABILITY: SURFACE MOTION
 HU0460
 HU0460  HISTORY     - Date     Condition        Report By
 HU0460  HISTORY     - 1935     MONUMENTED       CGS
 HU0460  HISTORY     - 1942     GOOD             CGS
 HU0460  HISTORY     - 1972     MARK NOT FOUND   NGS
 HU0460  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0460  HISTORY     - 20050907 MARK NOT FOUND   GEOCAC
 HU0460
 HU0460                          STATION DESCRIPTION
 HU0460
 HU0460'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0460'2.3 MI S FROM SALISBURY.
 HU0460'2.3 MILES SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION OF
 HU0460'SALISBURY, 900 FEET SOUTH OF MILEPOST 8, 20 FEET SOUTH OF A
 HU0460'DIRT-ROAD CROSSING, 20 FEET WEST OF THE CENTERLINE OF THE
 HU0460'SOUTH-BOUND TRACK, AND ABOUT 1/2 FOOT LOWER THAN THE TRACK.  A
 HU0460'STANDARD DISK, STAMPED B 6 1935 AND SET IN THE TOP OF A CONCRETE
 HU0460'POST FLUSH WITH THE GROUND.
 HU0460
 HU0460                          STATION RECOVERY (1972)
 HU0460
 HU0460'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0460'MARK NOT FOUND.
 HU0460
 HU0460                          STATION RECOVERY (1997)
 HU0460
 HU0460'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0460'MARK NOT FOUND.
 HU0460
 HU0460                          STATION RECOVERY (2005)
 HU0460
 HU0460'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0460'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0017 ***********************************************************************
 HV0017  DESIGNATION -  B 62
 HV0017  PID         -  HV0017
 HV0017  STATE/COUNTY-  MD/TALBOT
 HV0017  COUNTRY     -  US
 HV0017  USGS QUAD   -  TRAPPE (2016)
 HV0017
 HV0017                         *CURRENT SURVEY CONTROL
 HV0017  ______________________________________________________________________
 HV0017* NAD 83(1986) POSITION- 38 41 46.     (N) 076 03 40.     (W)   SCALED
 HV0017* NAVD 88 ORTHO HEIGHT -    15.728 (meters)       51.60  (feet) ADJUSTED
 HV0017  ______________________________________________________________________
 HV0017  GEOID HEIGHT    -        -34.831 (meters)                     GEOID18
 HV0017  DYNAMIC HEIGHT  -         15.718 (meters)       51.57  (feet) COMP
 HV0017  MODELED GRAVITY -    980,028.3   (mgal)                       NAVD 88
 HV0017
 HV0017  VERT ORDER      -  SECOND    CLASS 0
 HV0017
 HV0017.The horizontal coordinates were scaled from a map and have
 HV0017.an estimated accuracy of +/- 6 seconds.
 HV0017
 HV0017.The orthometric height was determined by differential leveling and
 HV0017.adjusted by the NATIONAL GEODETIC SURVEY
 HV0017.in June 1991.
 HV0017
 HV0017.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0017.GEOID18 height accuracy estimate available here.
 HV0017
 HV0017.Click photographs - Photos may exist for this station.
 HV0017
 HV0017.The dynamic height is computed by dividing the NAVD 88
 HV0017.geopotential number by the normal gravity value computed on the
 HV0017.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0017.degrees latitude (g = 980.6199 gals.).
 HV0017
 HV0017.The modeled gravity was interpolated from observed gravity values.
 HV0017
 HV0017;                    North         East    Units  Estimated Accuracy
 HV0017;SPC MD       -   114,690.      481,670.      MT  (+/- 180 meters Scaled)
 HV0017
 HV0017_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH077835(NAD 83)
 HV0017
 HV0017                          SUPERSEDED SURVEY CONTROL
 HV0017
 HV0017  NGVD 29 (11/26/84)   15.966  (m)           52.38   (f) ADJUSTED    2 0
 HV0017
 HV0017.Superseded values are not recommended for survey control.
 HV0017
 HV0017.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0017.See file dsdata.pdf to determine how the superseded data were derived.
 HV0017
 HV0017_MARKER: DB = BENCH MARK DISK
 HV0017_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0017_STAMPING: B 62 1942
 HV0017_MARK LOGO: CGS
 HV0017_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0017+STABILITY: SURFACE MOTION
 HV0017
 HV0017  HISTORY     - Date     Condition        Report By
 HV0017  HISTORY     - 1942     MONUMENTED       CGS
 HV0017  HISTORY     - 1943     GOOD             CGS
 HV0017
 HV0017                          STATION DESCRIPTION
 HV0017
 HV0017'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0017'5.5 MI S FROM EASTON.
 HV0017'ALONG U.S. HIGHWAY 213, 21 FEET NORTH OF CENTERLINE OF DIRT ROAD,
 HV0017'34 FEET WEST OF CENTERLINE OF U.S. HIGHWAY 213, 16 FEET NORTHEAST
 HV0017'OF ENTRANCE OF 15 IN CULVERT, 2 FEET WEST OF MEMORIAL PLAQUE,
 HV0017'HOLE IN THE WALL, AND SET IN THE TOP OF A CONCRETE POST.  A
 HV0017'STANDARD DISK.
 HV0017
 HV0017                          STATION RECOVERY (1943)
 HV0017
 HV0017'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 HV0017'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0018 ***********************************************************************
 HV0018  DESIGNATION -  B 62 RESET
 HV0018  PID         -  HV0018
 HV0018  STATE/COUNTY-  MD/TALBOT
 HV0018  COUNTRY     -  US
 HV0018  USGS QUAD   -  TRAPPE (2016)
 HV0018
 HV0018                         *CURRENT SURVEY CONTROL
 HV0018  ______________________________________________________________________
 HV0018* NAD 83(1986) POSITION- 38 41 46.     (N) 076 03 40.     (W)   SCALED
 HV0018* NAVD 88 ORTHO HEIGHT -    15.853 (meters)       52.01  (feet) ADJUSTED
 HV0018  ______________________________________________________________________
 HV0018  GEOID HEIGHT    -        -34.831 (meters)                     GEOID18
 HV0018  DYNAMIC HEIGHT  -         15.843 (meters)       51.98  (feet) COMP
 HV0018  MODELED GRAVITY -    980,028.3   (mgal)                       NAVD 88
 HV0018
 HV0018  VERT ORDER      -  FIRST     CLASS II
 HV0018
 HV0018.The horizontal coordinates were scaled from a map and have
 HV0018.an estimated accuracy of +/- 6 seconds.
 HV0018
 HV0018.The orthometric height was determined by differential leveling and
 HV0018.adjusted by the NATIONAL GEODETIC SURVEY
 HV0018.in June 1991.
 HV0018
 HV0018.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0018.GEOID18 height accuracy estimate available here.
 HV0018
 HV0018.Click photographs - Photos may exist for this station.
 HV0018
 HV0018.The dynamic height is computed by dividing the NAVD 88
 HV0018.geopotential number by the normal gravity value computed on the
 HV0018.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0018.degrees latitude (g = 980.6199 gals.).
 HV0018
 HV0018.The modeled gravity was interpolated from observed gravity values.
 HV0018
 HV0018;                    North         East    Units  Estimated Accuracy
 HV0018;SPC MD       -   114,690.      481,670.      MT  (+/- 180 meters Scaled)
 HV0018
 HV0018_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH077835(NAD 83)
 HV0018
 HV0018                          SUPERSEDED SURVEY CONTROL
 HV0018
 HV0018  NGVD 29 (11/26/84)   16.091  (m)           52.79   (f) ADJUSTED    1 2
 HV0018
 HV0018.Superseded values are not recommended for survey control.
 HV0018
 HV0018.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0018.See file dsdata.pdf to determine how the superseded data were derived.
 HV0018
 HV0018_MARKER: DB = BENCH MARK DISK
 HV0018_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0018_STAMPING: B 62 1960 RESET
 HV0018_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0018+STABILITY: SURFACE MOTION
 HV0018
 HV0018  HISTORY     - Date     Condition        Report By
 HV0018  HISTORY     - 1960     MONUMENTED       MDSRC
 HV0018  HISTORY     - 1971     GOOD             NGS
 HV0018  HISTORY     - 20041126 POOR             USPSQD
 HV0018
 HV0018                          STATION DESCRIPTION
 HV0018
 HV0018'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0018'2.8 MI N FROM TRAPPE.
 HV0018'ABOUT 0.15 MILE SOUTHEAST ALONG GREENFIELD AVENUE FROM THE POST
 HV0018'OFFICE AT TRAPPE, THENCE 2.7 MILES NORTH ALONG U.S. HIGHWAY 50, AT
 HV0018'THE INTERSECTION OF A BLACK TOP ROAD LEADING WEST, 31 FEET EAST
 HV0018'OF THE CENTER LINES OF THE NEAR LANES OF THE HIGHWAY, 48 FEET
 HV0018'NORTH OF THE CENTER LINE OF THE BLACK TOP ROAD, 1.5 FEET SOUTH
 HV0018'OF A MEMORIAL PLAQUE (HOLE IN THE WALL), 43 1/2 FEET NORTHWEST OF
 HV0018'POWER LINE POLE NO. 2 I - 5, 1.2 FEET NORTH OF A METAL WITNESS
 HV0018'POST, 1 FOOT BELOW THE LEVEL OF THE HIGHWAY AND SET IN THE TOP
 HV0018'OF A CONCRETE POST FLUSH WITH THE GROUND.
 HV0018
 HV0018                          STATION RECOVERY (2004)
 HV0018
 HV0018'RECOVERY NOTE BY US POWER SQUADRON 2004 (JKW)
 HV0018'REFERENCED BLACK TOP ROAD IS MANADIER ROAD, REFERENCED SIGN AND
 HV0018'WITNESS POST DO NOT EXIST.  REFERENCED POWER POLE HAS BEEN REPLACED BY
 HV0018'POLE 33773-05811.  THE DISK IS MISSING, ONLY THE CENTER STUD REMAINS.
 HV0018'THE MARK IS W OF THE ENTRANCE TO OLD WHITE MARSH EPISCOPAL CEMETERY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0249 ***********************************************************************
 HV0249  DESIGNATION -  B 63
 HV0249  PID         -  HV0249
 HV0249  STATE/COUNTY-  MD/DORCHESTER
 HV0249  COUNTRY     -  US
 HV0249  USGS QUAD   -  CHURCH CREEK (2016)
 HV0249
 HV0249                         *CURRENT SURVEY CONTROL
 HV0249  ______________________________________________________________________
 HV0249* NAD 83(1986) POSITION- 38 34 56.     (N) 076 09 55.     (W)   SCALED
 HV0249* NAVD 88 ORTHO HEIGHT -     1.359 (meters)        4.46  (feet) ADJUSTED
 HV0249  ______________________________________________________________________
 HV0249  GEOID HEIGHT    -        -34.839 (meters)                     GEOID18
 HV0249  DYNAMIC HEIGHT  -          1.359 (meters)        4.46  (feet) COMP
 HV0249  MODELED GRAVITY -    980,020.8   (mgal)                       NAVD 88
 HV0249
 HV0249  VERT ORDER      -  SECOND    CLASS 0
 HV0249
 HV0249.The horizontal coordinates were scaled from a map and have
 HV0249.an estimated accuracy of +/- 6 seconds.
 HV0249
 HV0249.The orthometric height was determined by differential leveling and
 HV0249.adjusted by the NATIONAL GEODETIC SURVEY
 HV0249.in June 1991.
 HV0249
 HV0249.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0249.GEOID18 height accuracy estimate available here.
 HV0249
 HV0249.Click photographs - Photos may exist for this station.
 HV0249
 HV0249.The dynamic height is computed by dividing the NAVD 88
 HV0249.geopotential number by the normal gravity value computed on the
 HV0249.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0249.degrees latitude (g = 980.6199 gals.).
 HV0249
 HV0249.The modeled gravity was interpolated from observed gravity values.
 HV0249
 HV0249;                    North         East    Units  Estimated Accuracy
 HV0249;SPC MD       -   101,960.      472,730.      MT  (+/- 180 meters Scaled)
 HV0249
 HV0249_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH985710(NAD 83)
 HV0249
 HV0249                          SUPERSEDED SURVEY CONTROL
 HV0249
 HV0249  NGVD 29 (02/24/95)    1.591  (m)            5.22   (f) ADJUSTED    2 0
 HV0249  NGVD 29 (11/26/84)    1.597  (m)            5.24   (f) SUPERSEDED  2 0
 HV0249
 HV0249.Superseded values are not recommended for survey control.
 HV0249
 HV0249.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0249.See file dsdata.pdf to determine how the superseded data were derived.
 HV0249
 HV0249_MARKER: DB = BENCH MARK DISK
 HV0249_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0249_STAMPING: B 63 1942
 HV0249_MARK LOGO: CGS
 HV0249_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0249+STABILITY: SURFACE MOTION
 HV0249
 HV0249  HISTORY     - Date     Condition        Report By
 HV0249  HISTORY     - 1942     MONUMENTED       CGS
 HV0249
 HV0249                          STATION DESCRIPTION
 HV0249
 HV0249'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0249'5.1 MI NW FROM CAMBRIDGE.
 HV0249'ALONG STATE HIGHWAY 343, AT ITS INTERSECTION WITH A SIDE ROAD, 37
 HV0249'FEET SOUTH OF THE CENTER OF THE HIGHWAY, 21 FEET EAST OF THE CENTER
 HV0249'OF THE SIDE ROAD, 14 FEET SOUTH OF TELEPHONE POLE NO. 215, 4 FEET
 HV0249'SOUTHEAST OF A POPLAR TREE, AND SET IN THE TOP OF A CONCRETE
 HV0249'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0250 ***********************************************************************
 HV0250  DESIGNATION -  B 63 RESET
 HV0250  PID         -  HV0250
 HV0250  STATE/COUNTY-  MD/DORCHESTER
 HV0250  COUNTRY     -  US
 HV0250  USGS QUAD   -  CHURCH CREEK (2016)
 HV0250
 HV0250                         *CURRENT SURVEY CONTROL
 HV0250  ______________________________________________________________________
 HV0250* NAD 83(1986) POSITION- 38 34 56.     (N) 076 09 55.     (W)   SCALED
 HV0250* NAVD 88 ORTHO HEIGHT -     1.40  (+/-2cm)        4.6   (feet) VERTCON3
 HV0250  ______________________________________________________________________
 HV0250  GEOID HEIGHT    -        -34.839 (meters)                     GEOID18
 HV0250  VERT ORDER      -  THIRD (See Below)
 HV0250
 HV0250.The horizontal coordinates were scaled from a map and have
 HV0250.an estimated accuracy of +/- 6 seconds.
 HV0250
 HV0250.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0250.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0250
 HV0250.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0250.GEOID18 height accuracy estimate available here.
 HV0250
 HV0250.The vertical order pertains to the NGVD 29 superseded value.
 HV0250
 HV0250.Click photographs - Photos may exist for this station.
 HV0250
 HV0250;                    North         East    Units  Estimated Accuracy
 HV0250;SPC MD       -   101,960.      472,730.      MT  (+/- 180 meters Scaled)
 HV0250
 HV0250_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH985710(NAD 83)
 HV0250
 HV0250                          SUPERSEDED SURVEY CONTROL
 HV0250
 HV0250  NGVD 29 (??/??/??)    1.63   (m)            5.3    (f) RESET       3  
 HV0250
 HV0250.Superseded values are not recommended for survey control.
 HV0250
 HV0250.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0250.See file dsdata.pdf to determine how the superseded data were derived.
 HV0250
 HV0250_MARKER: DB = BENCH MARK DISK
 HV0250_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0250_STAMPING: B 63 RESET 1958
 HV0250_MARK LOGO: CGS
 HV0250_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0250+STABILITY: SURFACE MOTION
 HV0250
 HV0250  HISTORY     - Date     Condition        Report By
 HV0250  HISTORY     - 1958     MONUMENTED       MDBCSM
 HV0250
 HV0250                          STATION DESCRIPTION
 HV0250
 HV0250'DESCRIBED BY MD BUR SURV AND MAPS 1958
 HV0250'5.1 MI NW FROM CAMBRIDGE.
 HV0250'5.1 MILES NORTHWEST ALONG MARYLAND ROUTE 343 FROM THE PILGRIM
 HV0250'HOLINESS CHURCH AT CAMBRIDGE, 520 FEET NORTH OF EXISTING MARYLAND
 HV0250'ROUTE 343, 23 FEET NORTH OF NEW POWER POLE NO. 116, 15.0 FEET
 HV0250'WEST OF THE EXTENDED CENTER OF A DIRT DRIVEWAY, AND SET IN THE TOP
 HV0250'OF A CONCRETE POST PROJECTING 6 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1597 ***********************************************************************
 JU1597  DESIGNATION -  B 64
 JU1597  PID         -  JU1597
 JU1597  STATE/COUNTY-  MD/CECIL
 JU1597  COUNTRY     -  US
 JU1597  USGS QUAD   -  NORTH EAST (2016)
 JU1597
 JU1597                         *CURRENT SURVEY CONTROL
 JU1597  ______________________________________________________________________
 JU1597* NAD 83(1986) POSITION- 39 32 03.     (N) 075 55 49.     (W)   SCALED
 JU1597* NAVD 88 ORTHO HEIGHT -    12.428 (meters)       40.77  (feet) ADJUSTED
 JU1597  ______________________________________________________________________
 JU1597  GEOID HEIGHT    -        -33.260 (meters)                     GEOID18
 JU1597  DYNAMIC HEIGHT  -         12.421 (meters)       40.75  (feet) COMP
 JU1597  MODELED GRAVITY -    980,125.6   (mgal)                       NAVD 88
 JU1597
 JU1597  VERT ORDER      -  SECOND    CLASS 0
 JU1597
 JU1597.The horizontal coordinates were scaled from a map and have
 JU1597.an estimated accuracy of +/- 6 seconds.
 JU1597
 JU1597.The orthometric height was determined by differential leveling and
 JU1597.adjusted by the NATIONAL GEODETIC SURVEY
 JU1597.in June 1991.
 JU1597
 JU1597.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1597.GEOID18 height accuracy estimate available here.
 JU1597
 JU1597.Click photographs - Photos may exist for this station.
 JU1597
 JU1597.The dynamic height is computed by dividing the NAVD 88
 JU1597.geopotential number by the normal gravity value computed on the
 JU1597.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1597.degrees latitude (g = 980.6199 gals.).
 JU1597
 JU1597.The modeled gravity was interpolated from observed gravity values.
 JU1597
 JU1597;                    North         East    Units  Estimated Accuracy
 JU1597;SPC MD       -   207,850.      491,970.      MT  (+/- 180 meters Scaled)
 JU1597
 JU1597_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ200764(NAD 83)
 JU1597
 JU1597                          SUPERSEDED SURVEY CONTROL
 JU1597
 JU1597  NGVD 29 (11/26/84)   12.659  (m)           41.53   (f) ADJUSTED    2 0
 JU1597
 JU1597.Superseded values are not recommended for survey control.
 JU1597
 JU1597.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1597.See file dsdata.pdf to determine how the superseded data were derived.
 JU1597
 JU1597_MARKER: DB = BENCH MARK DISK
 JU1597_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1597_STAMPING: B 64 1942
 JU1597_MARK LOGO: CGS
 JU1597_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1597+STABILITY: SURFACE MOTION
 JU1597
 JU1597  HISTORY     - Date     Condition        Report By
 JU1597  HISTORY     - 1942     MONUMENTED       CGS
 JU1597  HISTORY     - 1964     GOOD             CGS
 JU1597
 JU1597                          STATION DESCRIPTION
 JU1597
 JU1597'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1597'2 MI NE FROM ELK NECK.
 JU1597'2.0 MILE NORTHEAST ALONG THE OLD ELK NECK ROAD FROM THE CROSSROADS
 JU1597'AT ELK NECK, AT THE BRIDGE OVER MUDDY CREEK.  25.6 FEET SOUTH OF
 JU1597'THE SOUTHEAST CORNER OF THE BRIDGE, 22.3 FEET SOUTHEAST OF THE
 JU1597'CENTERLINE OF THE ROAD, 11.9 FEET SOUTH OF A TWIN TRUNK OAK TREE,
 JU1597'6.5 FEET WEST OF A TRIANGULAR BLAZED 8-INCH TREE AND 1 FOOT NORTH
 JU1597'OF THE METAL WITNESS POST AND SIGN.  A STANDARD DISK SET IN THE
 JU1597'TOP OF A CONCRETE POST, IT NOW BEING ABOUT 10-INCHES BELOW THE
 JU1597'SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2728 ***********************************************************************
 HU2728  DESIGNATION -  B 65 RESET
 HU2728  PID         -  HU2728
 HU2728  STATE/COUNTY-  MD/DORCHESTER
 HU2728  COUNTRY     -  US
 HU2728  USGS QUAD   -  SHARPTOWN (2016)
 HU2728
 HU2728                         *CURRENT SURVEY CONTROL
 HU2728  ______________________________________________________________________
 HU2728* NAD 83(1986) POSITION- 38 37 19.     (N) 075 43 26.     (W)   SCALED
 HU2728* NAVD 88 ORTHO HEIGHT -    11.19  (meters)       36.7   (feet) RESET
 HU2728  ______________________________________________________________________
 HU2728  GEOID HEIGHT    -        -35.484 (meters)                     GEOID18
 HU2728  VERT ORDER      -  THIRD
 HU2728
 HU2728.The horizontal coordinates were scaled from a map and have
 HU2728.an estimated accuracy of +/- 6 seconds.
 HU2728
 HU2728.The orthometric height was computed from unverified reset data.
 HU2728
 HU2728.No vertical observational check was made to the station.
 HU2728
 HU2728.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2728.GEOID18 height accuracy estimate available here.
 HU2728
 HU2728.Click photographs - Photos may exist for this station.
 HU2728
 HU2728;                    North         East    Units  Estimated Accuracy
 HU2728;SPC MD       -   106,820.      511,120.      MT  (+/- 180 meters Scaled)
 HU2728
 HU2728_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH369750(NAD 83)
 HU2728
 HU2728                          SUPERSEDED SURVEY CONTROL
 HU2728
 HU2728  NGVD 29 (11/18/05)   11.44   (m)           37.5    (f) RESET       3  
 HU2728
 HU2728.Superseded values are not recommended for survey control.
 HU2728
 HU2728.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2728.See file dsdata.pdf to determine how the superseded data were derived.
 HU2728
 HU2728_MARKER: DV = VERTICAL CONTROL DISK
 HU2728_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2728_STAMPING: B 65 RESET 1988
 HU2728_MARK LOGO: NGS
 HU2728_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2728_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2728+STABILITY: SURFACE MOTION
 HU2728_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2728+SATELLITE: SATELLITE OBSERVATIONS - 1988
 HU2728
 HU2728  HISTORY     - Date     Condition        Report By
 HU2728  HISTORY     - 1988     MONUMENTED       NGS
 HU2728
 HU2728                          STATION DESCRIPTION
 HU2728
 HU2728'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 HU2728'TO REACH FROM THE THE INTERSECTION OF STATE HIGHWAYS 392 AND 577, GO
 HU2728'SOUTHWEST FOR 1.05 KM (0.65 MI) ON STATE HIGHWAY 392 TO A SIDE ROAD
 HU2728'LEFT.  TURN LEFT AND GO SOUTH-SOUTHWEST FOR 1.15 KM (0.71 MI) ON
 HU2728'COKESBURY ROAD TO THE MARK ON THE LEFT, 37.4 M (122.7 FT) NORTHWEST
 HU2728'FROM THE NORTHWEST CORNER OF A TWO STORY HOUSE, 8.8 M (28.9 FT)
 HU2728'EAST-SOUTHEAST FROM THE CENTERLINE OF COKESBURY ROAD, 0.9 M (3.0 FT)
 HU2728'NORTHEAST FROM A HEDGE, 38.6 M (126.6 FT) NORTHWEST FROM A 14-INCH
 HU2728'CEDAR TREE, AND 0.6 M (2.0 FT) NORTHEAST FROM A WITNESS POST. THE
 HU2728'MARK IS FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0906 ***********************************************************************
 HU0906  DESIGNATION -  B 66
 HU0906  PID         -  HU0906
 HU0906  STATE/COUNTY-  MD/CAROLINE
 HU0906  COUNTRY     -  US
 HU0906  USGS QUAD   -  FEDERALSBURG (2016)
 HU0906
 HU0906                         *CURRENT SURVEY CONTROL
 HU0906  ______________________________________________________________________
 HU0906* NAD 83(1986) POSITION- 38 41 23.9    (N) 075 45 58.2    (W)   HD_HELD2
 HU0906* NAVD 88 ORTHO HEIGHT -     8.727 (meters)       28.63  (feet) ADJUSTED
 HU0906  ______________________________________________________________________
 HU0906  GEOID HEIGHT    -        -35.344 (meters)                     GEOID18
 HU0906  DYNAMIC HEIGHT  -          8.722 (meters)       28.62  (feet) COMP
 HU0906  MODELED GRAVITY -    980,021.5   (mgal)                       NAVD 88
 HU0906
 HU0906  VERT ORDER      -  SECOND    CLASS I
 HU0906
 HU0906.The horizontal coordinates were established by autonomous hand held GPS
 HU0906.observations and have an estimated accuracy of +/- 10 meters.
 HU0906
 HU0906.The orthometric height was determined by differential leveling and
 HU0906.adjusted by the NATIONAL GEODETIC SURVEY
 HU0906.in December 2004.
 HU0906
 HU0906.No vertical observational check was made to the station.
 HU0906
 HU0906.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0906.GEOID18 height accuracy estimate available here.
 HU0906
 HU0906.Click photographs - Photos may exist for this station.
 HU0906
 HU0906.The dynamic height is computed by dividing the NAVD 88
 HU0906.geopotential number by the normal gravity value computed on the
 HU0906.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0906.degrees latitude (g = 980.6199 gals.).
 HU0906
 HU0906.The modeled gravity was interpolated from observed gravity values.
 HU0906
 HU0906;                    North         East    Units  Estimated Accuracy
 HU0906;SPC MD       -   114,316.      507,339.      MT  (+/- 10 meters HH2 GPS)
 HU0906
 HU0906_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3336782651(NAD 83)
 HU0906
 HU0906                          SUPERSEDED SURVEY CONTROL
 HU0906
 HU0906  NAVD 88 (06/15/91)    8.739  (m)           28.67   (f) SUPERSEDED  2 0
 HU0906  NGVD 29 (11/26/84)    8.981  (m)           29.47   (f) ADJUSTED    2 0
 HU0906
 HU0906.Superseded values are not recommended for survey control.
 HU0906
 HU0906.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0906.See file dsdata.pdf to determine how the superseded data were derived.
 HU0906
 HU0906_MARKER: DB = BENCH MARK DISK
 HU0906_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0906_STAMPING: B 66 1942
 HU0906_MARK LOGO: CGS
 HU0906_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0906_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0906+STABILITY: SURFACE MOTION
 HU0906_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0906+SATELLITE: SATELLITE OBSERVATIONS - February 26, 2007
 HU0906
 HU0906  HISTORY     - Date     Condition        Report By
 HU0906  HISTORY     - 1942     MONUMENTED       CGS
 HU0906  HISTORY     - 1965     GOOD             CGS
 HU0906  HISTORY     - 20020606 GOOD             MDSHA
 HU0906  HISTORY     - 20070226 GOOD             USPSQD
 HU0906
 HU0906                          STATION DESCRIPTION
 HU0906
 HU0906'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0906'1 MI SE FROM FEDERALSBURG.
 HU0906'1.0 MILE SOUTHEAST ALONG HIGHWAY 313 FROM THE JUNCTION OF HIGHWAY
 HU0906'313 AND 318 AT FEDERALSBURG, CAROLINE COUNTY, 19.0 FEET SOUTHWEST
 HU0906'OF THE CENTER LINE OF THE HIGHWAY, 10.0 FEET SOUTHEAST OF UTILITY
 HU0906'POLE NUMBER 409, 20.6 FEET NORTHWEST OF THE NORTHWEST CORNER OF
 HU0906'A 2-STORY WHITE HOUSE, ABOUT LEVEL WITH THE HIGHWAY.
 HU0906
 HU0906                          STATION RECOVERY (1965)
 HU0906
 HU0906'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0906'RECOVERED IN GOOD CONDITION.
 HU0906
 HU0906                          STATION RECOVERY (2002)
 HU0906
 HU0906'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0906'RECOVERED AS DESCRIBED.
 HU0906
 HU0906                          STATION RECOVERY (2007)
 HU0906
 HU0906'RECOVERY NOTE BY US POWER SQUADRON 2007
 HU0906'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0907 ***********************************************************************
 HU0907  DESIGNATION -  B 66 RESET
 HU0907  PID         -  HU0907
 HU0907  STATE/COUNTY-  MD/CAROLINE
 HU0907  COUNTRY     -  US
 HU0907  USGS QUAD   -  FEDERALSBURG (2016)
 HU0907
 HU0907                         *CURRENT SURVEY CONTROL
 HU0907  ______________________________________________________________________
 HU0907* NAD 83(1986) POSITION- 38 41 24.     (N) 075 45 59.     (W)   SCALED
 HU0907* NAVD 88 ORTHO HEIGHT -     8.68  (+/-2cm)       28.5   (feet) VERTCON3
 HU0907  ______________________________________________________________________
 HU0907  GEOID HEIGHT    -        -35.343 (meters)                     GEOID18
 HU0907  VERT ORDER      -  THIRD (See Below)
 HU0907
 HU0907.The horizontal coordinates were scaled from a map and have
 HU0907.an estimated accuracy of +/- 6 seconds.
 HU0907
 HU0907.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU0907.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU0907
 HU0907.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0907.GEOID18 height accuracy estimate available here.
 HU0907
 HU0907.The vertical order pertains to the NGVD 29 superseded value.
 HU0907
 HU0907.Click photographs - Photos may exist for this station.
 HU0907
 HU0907;                    North         East    Units  Estimated Accuracy
 HU0907;SPC MD       -   114,320.      507,320.      MT  (+/- 180 meters Scaled)
 HU0907
 HU0907_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH333826(NAD 83)
 HU0907
 HU0907                          SUPERSEDED SURVEY CONTROL
 HU0907
 HU0907  NGVD 29 (??/??/??)    8.93   (m)           29.3    (f) RESET       3  
 HU0907
 HU0907.Superseded values are not recommended for survey control.
 HU0907
 HU0907.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0907.See file dsdata.pdf to determine how the superseded data were derived.
 HU0907
 HU0907_MARKER: DB = BENCH MARK DISK
 HU0907_SETTING: 0 = UNSPECIFIED SETTING
 HU0907_STAMPING: B 66 RESET 1954
 HU0907_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0907
 HU0907  HISTORY     - Date     Condition        Report By
 HU0907  HISTORY     - 1954     MONUMENTED       MDSRC
 HU0907
 HU0907                          STATION DESCRIPTION
 HU0907
 HU0907'DESCRIBED BY MD STATE ROADS COMM 1954
 HU0907'1 MI SE FROM FEDERALSBURG.
 HU0907'NOTE-- THE MARYLAND STATE ROADS COMMISSION, 1954.  THIS MARK IS
 HU0907'20 FEET DIRECTLY EAST OF THE OLD MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0919 ***********************************************************************
 HU0919  DESIGNATION -  B 67
 HU0919  PID         -  HU0919
 HU0919  STATE/COUNTY-  MD/CAROLINE
 HU0919  COUNTRY     -  US
 HU0919  USGS QUAD   -  HOBBS (2017)
 HU0919
 HU0919                         *CURRENT SURVEY CONTROL
 HU0919  ______________________________________________________________________
 HU0919* NAD 83(1986) POSITION- 38 48 04.7    (N) 075 50 01.2    (W)   HD_HELD2
 HU0919* NAVD 88 ORTHO HEIGHT -    14.724 (meters)       48.31  (feet) ADJUSTED
 HU0919  ______________________________________________________________________
 HU0919  GEOID HEIGHT    -        -35.031 (meters)                     GEOID18
 HU0919  DYNAMIC HEIGHT  -         14.715 (meters)       48.28  (feet) COMP
 HU0919  MODELED GRAVITY -    980,032.3   (mgal)                       NAVD 88
 HU0919
 HU0919  VERT ORDER      -  SECOND    CLASS I
 HU0919
 HU0919.The horizontal coordinates were established by autonomous hand held GPS
 HU0919.observations and have an estimated accuracy of +/- 10 meters.
 HU0919
 HU0919.The orthometric height was determined by differential leveling and
 HU0919.adjusted by the NATIONAL GEODETIC SURVEY
 HU0919.in June 1991.
 HU0919
 HU0919.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0919.GEOID18 height accuracy estimate available here.
 HU0919
 HU0919.Click photographs - Photos may exist for this station.
 HU0919
 HU0919.The dynamic height is computed by dividing the NAVD 88
 HU0919.geopotential number by the normal gravity value computed on the
 HU0919.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0919.degrees latitude (g = 980.6199 gals.).
 HU0919
 HU0919.The modeled gravity was interpolated from observed gravity values.
 HU0919
 HU0919;                    North         East    Units  Estimated Accuracy
 HU0919;SPC MD       -   126,597.      501,309.      MT  (+/- 10 meters HH2 GPS)
 HU0919
 HU0919_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2760995057(NAD 83)
 HU0919
 HU0919                          SUPERSEDED SURVEY CONTROL
 HU0919
 HU0919  NGVD 29 (11/26/84)   14.965  (m)           49.10   (f) ADJUSTED    2 0
 HU0919
 HU0919.Superseded values are not recommended for survey control.
 HU0919
 HU0919.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0919.See file dsdata.pdf to determine how the superseded data were derived.
 HU0919
 HU0919_MARKER: DB = BENCH MARK DISK
 HU0919_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0919_STAMPING: B 67 1942
 HU0919_MARK LOGO: CGS
 HU0919_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0919_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0919+STABILITY: SURFACE MOTION
 HU0919_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0919+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2002
 HU0919
 HU0919  HISTORY     - Date     Condition        Report By
 HU0919  HISTORY     - 1942     MONUMENTED       CGS
 HU0919  HISTORY     - 1965     GOOD             CGS
 HU0919  HISTORY     - 20020605 GOOD             MDSHA
 HU0919
 HU0919                          STATION DESCRIPTION
 HU0919
 HU0919'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0919'2.8 MI N FROM AMERICAN CORNERS.
 HU0919'2.75 MILES NORTH ALONG HIGHWAY 313 FROM THE INTERSECTION OF
 HU0919'HIGHWAYS 313 AND 621 AT AMERICAN CORNERS, 31.8 FEET SOUTH OF THE
 HU0919'CENTER OF THE HIGHWAY, 8.0 FEET NORTHWEST OF A BLAZED PINE TREE,
 HU0919'ABOUT LEVEL WITH THE HIGHWAY, NEAR A STANDARD REFERENCE POST.
 HU0919
 HU0919                          STATION RECOVERY (1965)
 HU0919
 HU0919'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0919'RECOVERED IN GOOD CONDITION.
 HU0919
 HU0919                          STATION RECOVERY (2002)
 HU0919
 HU0919'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0919'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0876 ***********************************************************************
 HU0876  DESIGNATION -  B 68
 HU0876  PID         -  HU0876
 HU0876  STATE/COUNTY-  MD/TALBOT
 HU0876  COUNTRY     -  US
 HU0876  USGS QUAD   -  FOWLING CREEK (2017)
 HU0876
 HU0876                         *CURRENT SURVEY CONTROL
 HU0876  ______________________________________________________________________
 HU0876* NAD 83(1986) POSITION- 38 51 37.     (N) 075 59 30.     (W)   SCALED
 HU0876* NAVD 88 ORTHO HEIGHT -    17.915 (meters)       58.78  (feet) ADJUSTED
 HU0876  ______________________________________________________________________
 HU0876  GEOID HEIGHT    -        -34.620 (meters)                     GEOID18
 HU0876  DYNAMIC HEIGHT  -         17.905 (meters)       58.74  (feet) COMP
 HU0876  MODELED GRAVITY -    980,044.9   (mgal)                       NAVD 88
 HU0876
 HU0876  VERT ORDER      -  SECOND    CLASS 0
 HU0876
 HU0876.The horizontal coordinates were scaled from a map and have
 HU0876.an estimated accuracy of +/- 6 seconds.
 HU0876
 HU0876.The orthometric height was determined by differential leveling and
 HU0876.adjusted by the NATIONAL GEODETIC SURVEY
 HU0876.in June 1991.
 HU0876
 HU0876.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0876.GEOID18 height accuracy estimate available here.
 HU0876
 HU0876.Click photographs - Photos may exist for this station.
 HU0876
 HU0876.The dynamic height is computed by dividing the NAVD 88
 HU0876.geopotential number by the normal gravity value computed on the
 HU0876.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0876.degrees latitude (g = 980.6199 gals.).
 HU0876
 HU0876.The modeled gravity was interpolated from observed gravity values.
 HU0876
 HU0876;                    North         East    Units  Estimated Accuracy
 HU0876;SPC MD       -   132,980.      487,510.      MT  (+/- 180 meters Scaled)
 HU0876
 HU0876_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ139017(NAD 83)
 HU0876
 HU0876                          SUPERSEDED SURVEY CONTROL
 HU0876
 HU0876  NGVD 29 (11/26/84)   18.151  (m)           59.55   (f) ADJUSTED    2 0
 HU0876
 HU0876.Superseded values are not recommended for survey control.
 HU0876
 HU0876.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0876.See file dsdata.pdf to determine how the superseded data were derived.
 HU0876
 HU0876_MARKER: DB = BENCH MARK DISK
 HU0876_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0876_STAMPING: B 68 1942
 HU0876_MARK LOGO: CGS
 HU0876_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0876+STABILITY: SURFACE MOTION
 HU0876
 HU0876  HISTORY     - Date     Condition        Report By
 HU0876  HISTORY     - 1942     MONUMENTED       CGS
 HU0876  HISTORY     - 1965     MARK NOT FOUND   CGS
 HU0876
 HU0876                          STATION DESCRIPTION
 HU0876
 HU0876'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0876'1.2 MI S FROM CORDOVA.
 HU0876'1.15 MILES SOUTH ALONG MACADAM ROAD FROM THE RAILROAD STATION AT
 HU0876'CORDOVA, TALBOT COUNTY, 23.0 FEET EAST OF THE CENTER LINE OF THE
 HU0876'MACADAM ROAD, 10.7 FEET NORTHEAST OF A 30-INCH PINE TREE, SET IN
 HU0876'THE NORTHWEST CORNER OF THE WOODS, ABOUT 250 FEET WEST OF THE WEST
 HU0876'CORNER OF A 2 STORY WHITE HOUSE.  69.0 FEET SOUTHWEST OF THE
 HU0876'CENTER LINE OF THE DRIVE WAY LEADING TO THE HOUSE, 2.0 FEET WEST
 HU0876'OF A STANDARD REFERENCE POST, 1.0 FEET HIGHER THAN THE ROAD.
 HU0876'NOTE-- IT IS BELIEVED THAT THE CONCRETE POST WAS RECOVERED.
 HU0876
 HU0876                          STATION RECOVERY (1965)
 HU0876
 HU0876'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0876'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7015 ***********************************************************************
 JV7015  DESIGNATION -  B 69 RESET
 JV7015  PID         -  JV7015
 JV7015  STATE/COUNTY-  MD/KENT
 JV7015  COUNTRY     -  US
 JV7015  USGS QUAD   -  CHESTERTOWN (2017)
 JV7015
 JV7015                         *CURRENT SURVEY CONTROL
 JV7015  ______________________________________________________________________
 JV7015* NAD 83(1986) POSITION- 39 12 01.8    (N) 076 04 11.5    (W)   HD_HELD2
 JV7015* NAVD 88 ORTHO HEIGHT -     2.753 (meters)        9.03  (feet) ADJUSTED
 JV7015  ______________________________________________________________________
 JV7015  GEOID HEIGHT    -        -33.453 (meters)                     GEOID18
 JV7015  DYNAMIC HEIGHT  -          2.751 (meters)        9.03  (feet) COMP
 JV7015  MODELED GRAVITY -    980,107.7   (mgal)                       NAVD 88
 JV7015
 JV7015  VERT ORDER      -  FIRST     CLASS II
 JV7015
 JV7015.The horizontal coordinates were established by autonomous hand held GPS
 JV7015.observations and have an estimated accuracy of +/- 10 meters.
 JV7015
 JV7015.The orthometric height was determined by differential leveling and
 JV7015.adjusted by the NATIONAL GEODETIC SURVEY
 JV7015.in July 2019.
 JV7015
 JV7015.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7015.GEOID18 height accuracy estimate available here.
 JV7015
 JV7015.Click photographs - Photos may exist for this station.
 JV7015
 JV7015.The dynamic height is computed by dividing the NAVD 88
 JV7015.geopotential number by the normal gravity value computed on the
 JV7015.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7015.degrees latitude (g = 980.6199 gals.).
 JV7015
 JV7015.The modeled gravity was interpolated from observed gravity values.
 JV7015
 JV7015;                    North         East    Units  Estimated Accuracy
 JV7015;SPC MD       -   170,674.      480,343.      MT  (+/- 10 meters HH2 GPS)
 JV7015
 JV7015_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0761939571(NAD 83)
 JV7015
 JV7015                          SUPERSEDED SURVEY CONTROL
 JV7015
 JV7015  NAVD 88 (11/18/05)    2.758  (m)            9.05   (f) SUPERSEDED  3 0
 JV7015  NGVD 29 (11/18/05)    3.00   (m)            9.8    (f) RESET       3  
 JV7015
 JV7015.Superseded values are not recommended for survey control.
 JV7015
 JV7015.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7015.See file dsdata.pdf to determine how the superseded data were derived.
 JV7015
 JV7015_MARKER: DV = VERTICAL CONTROL DISK
 JV7015_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV7015_SP_SET: BRIDGE ABUTMENT
 JV7015_STAMPING: B 69 RESET 1991
 JV7015_MARK LOGO: NGS
 JV7015_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV7015_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV7015_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7015+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV7015
 JV7015  HISTORY     - Date     Condition        Report By
 JV7015  HISTORY     - 1991     MONUMENTED       NGS
 JV7015  HISTORY     - 20011229 GOOD             USPSQD
 JV7015  HISTORY     - 20050814 GOOD             USPSQD
 JV7015  HISTORY     - 20120521 GOOD             MDSHA
 JV7015  HISTORY     - 20140117 GOOD             ARCSHE
 JV7015  HISTORY     - 20191015 GOOD             ARCSHE
 JV7015  HISTORY     - 20250731 GOOD             PROFLN
 JV7015
 JV7015                          STATION DESCRIPTION
 JV7015
 JV7015'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV7015'THE MARKER IS LOCATED ABOUT 0.5 MI (0.8 KM) SOUTH OF THE APPROXIMATE
 JV7015'CENTER OF CHESTERTOWN, IN THE MOST SOUTHEAST END OF THE SOUTH
 JV7015'ABUTMENT OF A BRIDGE WHERE STATE HIGHWAY 289 CROSSES RADCLIFF CREEK.
 JV7015'IT IS ON ROAD RIGHT-OF-WAY.  TO REACH FROM THE NORTHWEST END OF THE
 JV7015'U.S. HIGHWAY 213 BRIDGE OVER THE CHESTER RIVER IN CHESTERTOWN, GO
 JV7015'WESTERLY ON U.S. HIGHWAY 213 FOR 0.15 MILE (0.24 KM) TO STATE
 JV7015'HIGHWAY 289.  TURN LEFT AND GO SOUTHWEST ON STATE HIGHWAY 289 FOR 0.7
 JV7015'MI (1.1 KM) TO THE MARKER ON THE LEFT AT THE SOUTH SIDE OF THE
 JV7015'BRIDGE.  THE MARKER IS 20 FT (6.1 M) SOUTHEAST OF THE CENTER OF STATE
 JV7015'HIGHWAY 289, 3.2 FT (1.0 M) NORTHWEST OF THE SOUTHEAST END OF THE
 JV7015'CONCRETE WINGWALL, 7.3 FT (2.2 M) EAST OF THE MOST SOUTHERLY END OF
 JV7015'THE BRIDGE WALL ALONG THE MOST EASTERLY SIDE OF THE BRIDGE, 3.3 FT
 JV7015'(1.0 M) SOUTHEAST OF THE SOUTHEAST SIDE OF THE BRIDGE WALL AND 47 FT
 JV7015'(14.3 M) NORTH-NORTHEAST OF A POWERLINE POLE NUMBERED 25.  IT IS
 JV7015'ABOUT LEVEL WITH THE SURFACE OF THE HIGHWAY.
 JV7015
 JV7015                          STATION RECOVERY (2001)
 JV7015
 JV7015'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV7015'RECOVERED IN GOOD CONDITION.
 JV7015
 JV7015                          STATION RECOVERY (2005)
 JV7015
 JV7015'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 JV7015'RECOVERED IN GOOD CONDITION.
 JV7015
 JV7015                          STATION RECOVERY (2012)
 JV7015
 JV7015'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2012 (WAC)
 JV7015'RECOVERED AS DESCRIBED.
 JV7015
 JV7015                          STATION RECOVERY (2014)
 JV7015
 JV7015'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV7015'RECOVERED IN GOOD CONDITION.
 JV7015
 JV7015                          STATION RECOVERY (2019)
 JV7015
 JV7015'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 JV7015'RECOVERED IN GOOD CONDITION.
 JV7015
 JV7015                          STATION RECOVERY (2025)
 JV7015
 JV7015'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV7015'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2666 ***********************************************************************
 HU2666  DESIGNATION -  B 7 RESET
 HU2666  PID         -  HU2666
 HU2666  STATE/COUNTY-  MD/DORCHESTER
 HU2666  COUNTRY     -  US
 HU2666  USGS QUAD   -  RHODESDALE (2016)
 HU2666
 HU2666                         *CURRENT SURVEY CONTROL
 HU2666  ______________________________________________________________________
 HU2666* NAD 83(1986) POSITION- 38 36 01.     (N) 075 50 49.     (W)   SCALED
 HU2666* NAVD 88 ORTHO HEIGHT -    10.48  (meters)       34.4   (feet) RESET
 HU2666  ______________________________________________________________________
 HU2666  GEOID HEIGHT    -        -35.329 (meters)                     GEOID18
 HU2666  VERT ORDER      -  THIRD
 HU2666
 HU2666.The horizontal coordinates were scaled from a map and have
 HU2666.an estimated accuracy of +/- 6 seconds.
 HU2666
 HU2666.The orthometric height was computed from unverified reset data.
 HU2666
 HU2666.No vertical observational check was made to the station.
 HU2666
 HU2666.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2666.GEOID18 height accuracy estimate available here.
 HU2666
 HU2666.Click photographs - Photos may exist for this station.
 HU2666
 HU2666;                    North         East    Units  Estimated Accuracy
 HU2666;SPC MD       -   104,270.      500,440.      MT  (+/- 180 meters Scaled)
 HU2666
 HU2666_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH262727(NAD 83)
 HU2666
 HU2666                          SUPERSEDED SURVEY CONTROL
 HU2666
 HU2666  NGVD 29 (11/18/05)   10.72   (m)           35.2    (f) RESET       3  
 HU2666
 HU2666.Superseded values are not recommended for survey control.
 HU2666
 HU2666.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2666.See file dsdata.pdf to determine how the superseded data were derived.
 HU2666
 HU2666_MARKER: DV = VERTICAL CONTROL DISK
 HU2666_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2666_STAMPING: B 7 RESET 1982
 HU2666_MARK LOGO: NGS
 HU2666_PROJECTION: FLUSH
 HU2666_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2666+STABILITY: SURFACE MOTION
 HU2666
 HU2666  HISTORY     - Date     Condition        Report By
 HU2666  HISTORY     - 1982     MONUMENTED       NGS
 HU2666  HISTORY     - 20061007 MARK NOT FOUND   USPSQD
 HU2666
 HU2666                          STATION DESCRIPTION
 HU2666
 HU2666'DESCRIBED BY NATIONAL GEODETIC SURVEY 1982
 HU2666'2.6 KM (1.60 MI) NNW FROM RHODESDALE.
 HU2666'2.6 KM (1.60 MI) NORTH-NORTHWEST OF RHODESDALE IN THE SOUTH-EAST ANGLE
 HU2666'OF THE INTERSECTION OF PETERSBURG ROAD AND CORKRAN CEMETERY ROAD,
 HU2666'28.2 M (92.5 FT) EAST FROM THE CENTER OF PETERSBURG ROAD, 18.9 M
 HU2666'(62.0 FT) SOUTH-SOUTHEAST FROM A POWERLINE POLE AND 9.0 M (29.5 FT)
 HU2666'SOUTH FROM THE CENTER OF CORKRAN CEMETERY ROAD.
 HU2666'THE MARK IS 0.6 METERS  N FROM  A WITNESS POST
 HU2666'THE MARK IS ABOVE LEVEL WITH ROAD INTERSECTION.
 HU2666
 HU2666                          STATION RECOVERY (2006)
 HU2666
 HU2666'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU2666'AREA HAS BEEN BULL DOZED. MEASUREMENTS DO NOT CORRESPOND TO GPS
 HU2666'COORDINATES. ROAD DESCRIPTION IS NO LONGER CORRECT. NEW POLES IN AREA.
 HU2666'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0339 ***********************************************************************
 JV0339  DESIGNATION -  B 70
 JV0339  PID         -  JV0339
 JV0339  STATE/COUNTY-  MD/KENT
 JV0339  COUNTRY     -  US
 JV0339  USGS QUAD   -  ROCK HALL (2016)
 JV0339
 JV0339                         *CURRENT SURVEY CONTROL
 JV0339  ______________________________________________________________________
 JV0339* NAD 83(1986) POSITION- 39 08 11.2    (N) 076 14 05.7    (W)   HD_HELD2
 JV0339* NAVD 88 ORTHO HEIGHT -     7.170 (meters)       23.52  (feet) ADJUSTED
 JV0339  ______________________________________________________________________
 JV0339  GEOID HEIGHT    -        -33.363 (meters)                     GEOID18
 JV0339  DYNAMIC HEIGHT  -          7.166 (meters)       23.51  (feet) COMP
 JV0339  MODELED GRAVITY -    980,104.8   (mgal)                       NAVD 88
 JV0339
 JV0339  VERT ORDER      -  SECOND    CLASS I
 JV0339
 JV0339.The horizontal coordinates were established by autonomous hand held GPS
 JV0339.observations and have an estimated accuracy of +/- 10 meters.
 JV0339
 JV0339.The orthometric height was determined by differential leveling and
 JV0339.adjusted by the NATIONAL GEODETIC SURVEY
 JV0339.in June 1991.
 JV0339
 JV0339.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0339.GEOID18 height accuracy estimate available here.
 JV0339
 JV0339.Click photographs - Photos may exist for this station.
 JV0339
 JV0339.The dynamic height is computed by dividing the NAVD 88
 JV0339.geopotential number by the normal gravity value computed on the
 JV0339.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0339.degrees latitude (g = 980.6199 gals.).
 JV0339
 JV0339.The modeled gravity was interpolated from observed gravity values.
 JV0339
 JV0339;                    North         East    Units  Estimated Accuracy
 JV0339;SPC MD       -   163,430.      466,146.      MT  (+/- 10 meters HH2 GPS)
 JV0339
 JV0339_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9327032644(NAD 83)
 JV0339
 JV0339                          SUPERSEDED SURVEY CONTROL
 JV0339
 JV0339  NGVD 29 (11/26/84)    7.417  (m)           24.33   (f) ADJUSTED    2 0
 JV0339
 JV0339.Superseded values are not recommended for survey control.
 JV0339
 JV0339.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0339.See file dsdata.pdf to determine how the superseded data were derived.
 JV0339
 JV0339_MARKER: DB = BENCH MARK DISK
 JV0339_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0339_SP_SET: CHURCH PORCH
 JV0339_STAMPING: B 70 1942
 JV0339_MARK LOGO: CGS
 JV0339_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0339_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0339_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0339+SATELLITE: SATELLITE OBSERVATIONS - April 15, 2025
 JV0339
 JV0339  HISTORY     - Date     Condition        Report By
 JV0339  HISTORY     - 1942     MONUMENTED       CGS
 JV0339  HISTORY     - 1964     GOOD             CGS
 JV0339  HISTORY     - 19960420 GOOD             USPSQD
 JV0339  HISTORY     - 20020322 GOOD             MDSHA
 JV0339  HISTORY     - 20051211 GOOD             USPSQD
 JV0339  HISTORY     - 20130824 GOOD             USPSQD
 JV0339  HISTORY     - 20140109 GOOD             ARCSHE
 JV0339  HISTORY     - 20191009 GOOD             MDSHA
 JV0339  HISTORY     - 20241217 GOOD             PROFLN
 JV0339  HISTORY     - 20250415 GOOD             PROFLN
 JV0339
 JV0339                          STATION DESCRIPTION
 JV0339
 JV0339'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0339'AT THE METHODIST CHURCH IN ROCK HALL, JUST SOUTH OF THE MAIN
 JV0339'ENTRANCE, 6 INCHES SOUTH OF SOUTH EDGE OF THE CONCRETE PORCH,
 JV0339'AND IN TOP OF THE FOUNDATION BETWEEN THE PORTION OF THE EAST
 JV0339'WALL WHICH EXTENDS TO SUPPORT THE CORNERSTONE AND DOOR FACING.  A
 JV0339'STANDARD DISK SET IN A DRILL HOLE.
 JV0339
 JV0339                          STATION RECOVERY (1996)
 JV0339
 JV0339'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0339'RECOVERED IN GOOD CONDITION.
 JV0339
 JV0339                          STATION RECOVERY (2002)
 JV0339
 JV0339'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV0339'THE STATION WAS RECOVERED IN GOOD CONDITION. THE BENCH MARK IS LOCATED
 JV0339'IN A 6 INCH (15 CM) ROUND PVC PIPE SET IN THE NEW CONCRETE PORCH.
 JV0339
 JV0339                          STATION RECOVERY (2005)
 JV0339
 JV0339'RECOVERY NOTE BY US POWER SQUADRON 2005 (DU)
 JV0339'RECOVERED IN GOOD CONDITION.
 JV0339
 JV0339                          STATION RECOVERY (2013)
 JV0339
 JV0339'RECOVERY NOTE BY US POWER SQUADRON 2013
 JV0339'WAS FOUND IN A PVC RISER PIPE, ABOUT 10 IN. DEEP W/CAP MARKED 'SURVEY
 JV0339'MARKER', TO THE LEFT OF THE CHURCH MAIN ENTRANCE DOOR IN TOP OF A
 JV0339'CONCRETE PORCH.  IT WAS DIFFICULT TO READ THE DESIGNATION LETTERS.
 JV0339
 JV0339                          STATION RECOVERY (2014)
 JV0339
 JV0339'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0339'RECOVERED IN GOOD CONDITION.
 JV0339
 JV0339                          STATION RECOVERY (2019)
 JV0339
 JV0339'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (WAC)
 JV0339'RECOVERED IN GOOD CONDITION.
 JV0339
 JV0339                          STATION RECOVERY (2024)
 JV0339
 JV0339'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2024 (JRO)
 JV0339'RECOVERED UNDER PLAIN WHITE PVC CAP.
 JV0339
 JV0339                          STATION RECOVERY (2025)
 JV0339
 JV0339'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0339'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0269 ***********************************************************************
 JV0269  DESIGNATION -  B 71
 JV0269  PID         -  JV0269
 JV0269  STATE/COUNTY-  MD/KENT
 JV0269  COUNTRY     -  US
 JV0269  USGS QUAD   -  BETTERTON (2017)
 JV0269
 JV0269                         *CURRENT SURVEY CONTROL
 JV0269  ______________________________________________________________________
 JV0269* NAD 83(2011) POSITION- 39 16 24.48650(N) 076 05 30.29191(W)   ADJUSTED
 JV0269* NAD 83(2011) ELLIP HT-    -9.526 (meters)        (09/18/23)   ADJUSTED
 JV0269* NAD 83(2011) EPOCH   -  2010.00
 JV0269* NAVD 88 ORTHO HEIGHT -    23.804 (meters)       78.10  (feet) ADJUSTED
 JV0269  ______________________________________________________________________
 JV0269  GEOID HEIGHT    -        -33.344 (meters)                     GEOID18
 JV0269  NAD 83(2011) X  -  1,188,416.537 (meters)                     COMP
 JV0269  NAD 83(2011) Y  - -4,799,204.149 (meters)                     COMP
 JV0269  NAD 83(2011) Z  -  4,015,859.418 (meters)                     COMP
 JV0269  LAPLACE CORR    -         -1.74  (seconds)                    DEFLEC18
 JV0269  DYNAMIC HEIGHT  -         23.792 (meters)       78.06  (feet) COMP
 JV0269  MODELED GRAVITY -    980,111.0   (mgal)                       NAVD 88
 JV0269
 JV0269  VERT ORDER      -  FIRST     CLASS II
 JV0269
 JV0269  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0269  Standards:
 JV0269         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0269            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0269  -------------------------------------------------------------------
 JV0269  NETWORK    0.55   1.43           0.24   0.21   0.73     -0.07215664
 JV0269  -------------------------------------------------------------------
 JV0269  Click here for local accuracies and other accuracy information.
 JV0269
 JV0269.The horizontal coordinates were established by GPS observations
 JV0269.and adjusted by the MD DEPT OF TRANSP in September 2023.
 JV0269
 JV0269.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0269.been affixed to the stable North American tectonic plate. See 
 JV0269.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0269
 JV0269.The horizontal coordinates are valid at the epoch date displayed above
 JV0269.which is a decimal equivalence of Year/Month/Day.
 JV0269
 JV0269.The orthometric height was determined by differential leveling and
 JV0269.adjusted by the NATIONAL GEODETIC SURVEY
 JV0269.in June 1991.
 JV0269
 JV0269.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0269.GEOID18 height accuracy estimate available here.
 JV0269
 JV0269.Click photographs - Photos may exist for this station.
 JV0269
 JV0269.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0269
 JV0269.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0269
 JV0269.The ellipsoidal height was determined by GPS observations
 JV0269.and is referenced to NAD 83.
 JV0269
 JV0269.The dynamic height is computed by dividing the NAVD 88
 JV0269.geopotential number by the normal gravity value computed on the
 JV0269.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0269.degrees latitude (g = 980.6199 gals.).
 JV0269
 JV0269.The modeled gravity was interpolated from observed gravity values.
 JV0269
 JV0269. The following values were computed from the NAD 83(2011) position.
 JV0269
 JV0269;                    North         East     Units Scale Factor Converg.
 JV0269;SPC MD       -   178,754.848   478,371.524   MT  0.99997388   +0 34 12.2
 JV0269;SPC MD       -   586,464.86  1,569,457.24   sFT  0.99997388   +0 34 12.2
 JV0269;UTM  18      - 4,347,692.379   405,827.488   MT  0.99970919   -0 41 28.1
 JV0269
 JV0269!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0269!SPC MD       -   1.00000149  x   0.99997388  =   0.99997537
 JV0269!UTM  18      -   1.00000149  x   0.99970919  =   0.99971068
 JV0269
 JV0269_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0582747692(NAD 83)
 JV0269
 JV0269                          SUPERSEDED SURVEY CONTROL
 JV0269
 JV0269  NGVD 29 (11/26/84)   24.045  (m)           78.89   (f) ADJUSTED    1 2
 JV0269
 JV0269.Superseded values are not recommended for survey control.
 JV0269
 JV0269.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0269.See file dsdata.pdf to determine how the superseded data were derived.
 JV0269
 JV0269_MARKER: DB = BENCH MARK DISK
 JV0269_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0269_STAMPING: B 71 1942
 JV0269_MARK LOGO: CGS
 JV0269_PROJECTION: PROJECTING 2 CENTIMETERS
 JV0269_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0269+STABILITY: SURFACE MOTION
 JV0269_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0269+SATELLITE: SATELLITE OBSERVATIONS - April 16, 2025
 JV0269
 JV0269  HISTORY     - Date     Condition        Report By
 JV0269  HISTORY     - 1942     MONUMENTED       CGS
 JV0269  HISTORY     - 1971     GOOD             NGS
 JV0269  HISTORY     - 1990     GOOD             USPSQD
 JV0269  HISTORY     - 20011228 GOOD             USPSQD
 JV0269  HISTORY     - 20140117 GOOD             ARCSHE
 JV0269  HISTORY     - 20211215 GOOD             MDSHA
 JV0269  HISTORY     - 20250416 GOOD             PROFLN
 JV0269
 JV0269                          STATION DESCRIPTION
 JV0269
 JV0269'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0269'AT WORTON.
 JV0269'AT WORTON, ALONG STATE HIGHWAY 297, ON THE PROPERTY OF THE
 JV0269'WORTON METHODIST CHURCH, AT THE NORTHEAST CORNER OF THE LAWN,
 JV0269'44.4 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE CHURCH
 JV0269'BUILDING, 27.6 FEET WEST OF THE CENTER LINE OF STATE HIGHWAY 297,
 JV0269'19 FEET SOUTH OF THE CENTER LINE OF A DIRVEWAY ALONG THE
 JV0269'SOUTH SIDE OF THE CHURCH, 7 1/2 FEET SOUTHWEST OF POWER LINE
 JV0269'POLE NO. 23, 26.3 FEET NORTH OF THE NORTH EDGE OF A SIDEWALK
 JV0269'LEADING TO CHURCH, 158 FEET EAST OF BENCH MARK K 114
 JV0269'DESCRIBED, 2 FEET ABOVE THE LEVEL OF THE HIGHWAY AND SET IN THE
 JV0269'TOP OF A CONCRETE POST FLUSH WITH THE LEVEL OF THE GROUND.
 JV0269
 JV0269                          STATION RECOVERY (1990)
 JV0269
 JV0269'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0269'RECOVERED IN GOOD CONDITION.
 JV0269
 JV0269                          STATION RECOVERY (2001)
 JV0269
 JV0269'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0269'RECOVERED IN GOOD CONDITION.
 JV0269
 JV0269                          STATION RECOVERY (2014)
 JV0269
 JV0269'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0269'RECOVERED IN GOOD CONDITION.
 JV0269
 JV0269                          STATION RECOVERY (2021)
 JV0269
 JV0269'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV0269'RECOVERED IN GOOD CONDITION.  DESCRIPTION HAS BEEN UPDATED. THE MARK
 JV0269'IS LOCATED ABOUT 4.7 MI (7.6 KM) NORTH-NORTHWEST OF CHESTERTOWN, 2.4
 JV0269'MI (3.9 KM) EAST OF HANESVILLE, 2.1 MI (3.4 KM) SOUTHWEST OF LYNCH AND
 JV0269'IN THE TOWN OF WORTON, MD.  RECOVERED IN GOOD CONDITION.
 JV0269'
 JV0269'TO REACH THE MARK FROM THE JUNCTION OF MD 213 AND MD 297 N, GO
 JV0269'NORTHWEST ON MD 297 N FOR 2.73 MI (4.39 KM) TO THE ENTRANCE OF WORTON
 JV0269'UNITED METHODIST CHURCH.  THE MARK IS ON THE LEFT OF THE CHURCH
 JV0269'ENTRANCE THE MARK IS 95.9 FT (29.2 M) NORTH-NORTHWEST OF A SEWER
 JV0269'MANHOLE, 83.4 FT (25.4 M) NORTH OF A UTILITY POLE NUMBERED DP AND L
 JV0269'33137-26326, 44.1 FT (13.4 M) NORTHEAST OF THE NORTHEAST CORNER OF
 JV0269'WORTON UNITED METHODIST CHURCH, 30.7 FT (9.4 M) WEST OF THE CENTERLINE
 JV0269'OF STATE ROUTE MD 297, 28.6 FT (8.7 M) NORTH OF THE CENTERLINE OF THE
 JV0269'SIDEWALK LEADING TO THE CHURCH, 7.5 FT (2.3 M) SOUTH OF A UTILITY POLE
 JV0269'NUMBERED DP AND L 23/33138-26335.
 JV0269
 JV0269                          STATION RECOVERY (2025)
 JV0269
 JV0269'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0269'THE DRIVEWAY THE MARK IS SOUTH OF MENTIONED IN 1971 DESCRIPTION IS ON
 JV0269'THE NORTH, NOT SOUTH, SIDE OF THE CHURCH.  THE MARK IS ON THE RIGHT,
 JV0269'NOT THE LEFT, OF THE CHURCH ENTRANCE AS MENTIONED IN 2021 RECOVERY
 JV0269'NOTE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8774 ***********************************************************************
 HV8774  DESIGNATION -  B 71
 HV8774  PID         -  HV8774
 HV8774  STATE/COUNTY-  MD/MONTGOMERY
 HV8774  COUNTRY     -  US
 HV8774  USGS QUAD   -  WASHINGTON WEST (2016)
 HV8774
 HV8774                         *CURRENT SURVEY CONTROL
 HV8774  ______________________________________________________________________
 HV8774* NAD 83(1986) POSITION- 38 59 38.     (N) 077 01 54.     (W)   SCALED
 HV8774* NAVD 88 ORTHO HEIGHT -   100.149 (meters)      328.57  (feet) ADJUSTED
 HV8774  ______________________________________________________________________
 HV8774  GEOID HEIGHT    -        -31.965 (meters)                     GEOID18
 HV8774  DYNAMIC HEIGHT  -        100.095 (meters)      328.40  (feet) COMP
 HV8774  MODELED GRAVITY -    980,085.8   (mgal)                       NAVD 88
 HV8774
 HV8774  VERT ORDER      -  FIRST     CLASS II
 HV8774
 HV8774.The horizontal coordinates were scaled from a map and have
 HV8774.an estimated accuracy of +/- 6 seconds.
 HV8774
 HV8774.The orthometric height was determined by differential leveling and
 HV8774.adjusted by the NATIONAL GEODETIC SURVEY
 HV8774.in June 1991.
 HV8774
 HV8774.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8774.GEOID18 height accuracy estimate available here.
 HV8774
 HV8774.Click photographs - Photos may exist for this station.
 HV8774
 HV8774.The dynamic height is computed by dividing the NAVD 88
 HV8774.geopotential number by the normal gravity value computed on the
 HV8774.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8774.degrees latitude (g = 980.6199 gals.).
 HV8774
 HV8774.The modeled gravity was interpolated from observed gravity values.
 HV8774
 HV8774;                    North         East    Units  Estimated Accuracy
 HV8774;SPC MD       -   147,330.      397,260.      MT  (+/- 180 meters Scaled)
 HV8774
 HV8774_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ240180(NAD 83)
 HV8774
 HV8774                          SUPERSEDED SURVEY CONTROL
 HV8774
 HV8774  NGVD 29 (11/17/93)  100.364  (m)          329.28   (f) ADJUSTED    1 2
 HV8774
 HV8774.Superseded values are not recommended for survey control.
 HV8774
 HV8774.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8774.See file dsdata.pdf to determine how the superseded data were derived.
 HV8774
 HV8774_MARKER: DD = SURVEY DISK
 HV8774_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV8774_SP_SET: OVERPASS ABUTMENT
 HV8774_STAMPING: B 71
 HV8774_MARK LOGO: WMATA
 HV8774_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8774_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8774
 HV8774  HISTORY     - Date     Condition        Report By
 HV8774  HISTORY     - UNK      MONUMENTED       WMATA
 HV8774  HISTORY     - 19900409 GOOD             NGS
 HV8774  HISTORY     - 19931005 GOOD             NGS
 HV8774
 HV8774                          STATION DESCRIPTION
 HV8774
 HV8774'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8774'IN SILVER SPRING, AT THE INTERSECTION OF COLESVILLE ROAD (U.S. HIGHWAY
 HV8774'29) AND THE BALTIMORE AND OHIO RAILROAD IN SILVER SPRING, IN THE
 HV8774'SOUTHWEST END OF THE SOUTHEAST CONCRETE ABUTMENT OF THE RAILROAD
 HV8774'OVERPASS OF THE ROAD, 56.0 M (183.73 FT) NORTHEAST OF THE
 HV8774'INTERSECTION OF COLESVILLE ROAD AND EAST-WEST HIGHWAY, 51.0 M
 HV8774'(167.32 FT) SOUTHEAST OF THE CENTER OF THE EASTBOUND LANES OF THE
 HV8774'ROAD, 11.5 M (37.73 FT) NORTH OF THE NORTHEAST CORNER OF BUILDING
 HV8774'NUMBER SSMC2 OF THE NOAA COMPLEX, 5.5 M (18.04 FT) WEST OF A FENCE,
 HV8774'1.7 M (5.58 FT) WEST OF THE NEAR RAIL, AND LEVEL WITH THE TRACK.
 HV8774
 HV8774                          STATION RECOVERY (1993)
 HV8774
 HV8774'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1993
 HV8774'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9390 ***********************************************************************
 DR9390  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9390  DESIGNATION -  B 71 AZ MK
 DR9390  PID         -  DR9390
 DR9390  STATE/COUNTY-  MD/KENT
 DR9390  COUNTRY     -  US
 DR9390  USGS QUAD   -  BETTERTON (2017)
 DR9390
 DR9390                         *CURRENT SURVEY CONTROL
 DR9390  ______________________________________________________________________
 DR9390* NAD 83(2011) POSITION- 39 16 29.43959(N) 076 05 31.40056(W)   ADJUSTED
 DR9390* NAD 83(2011) ELLIP HT-   -10.877 (meters)        (09/18/23)   ADJUSTED
 DR9390* NAD 83(2011) EPOCH   -  2010.00
 DR9390* NAVD 88 ORTHO HEIGHT -    22.45  (meters)       73.7   (feet) GPS OBS
 DR9390  ______________________________________________________________________
 DR9390  GEOID HEIGHT    -        -33.343 (meters)                     GEOID18
 DR9390  NAD 83(2011) X  -  1,188,367.249 (meters)                     COMP
 DR9390  NAD 83(2011) Y  - -4,799,115.662 (meters)                     COMP
 DR9390  NAD 83(2011) Z  -  4,015,976.809 (meters)                     COMP
 DR9390  LAPLACE CORR    -         -1.71  (seconds)                    DEFLEC18
 DR9390
 DR9390  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9390  Standards:
 DR9390         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9390            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9390  -------------------------------------------------------------------
 DR9390  NETWORK    0.54   1.31           0.24   0.20   0.67     -0.06824248
 DR9390  -------------------------------------------------------------------
 DR9390  Click here for local accuracies and other accuracy information.
 DR9390
 DR9390.The horizontal coordinates were established by GPS observations
 DR9390.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9390
 DR9390.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9390.been affixed to the stable North American tectonic plate. See 
 DR9390.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9390
 DR9390.The horizontal coordinates are valid at the epoch date displayed above
 DR9390.which is a decimal equivalence of Year/Month/Day.
 DR9390
 DR9390.The orthometric height was determined by GPS observations and a
 DR9390.high-resolution geoid model using precise GPS observation and
 DR9390.processing techniques.
 DR9390
 DR9390.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9390.GEOID18 height accuracy estimate available here.
 DR9390
 DR9390.Click photographs - Photos may exist for this station.
 DR9390
 DR9390.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9390
 DR9390.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9390
 DR9390.The ellipsoidal height was determined by GPS observations
 DR9390.and is referenced to NAD 83.
 DR9390
 DR9390. The following values were computed from the NAD 83(2011) position.
 DR9390
 DR9390;                    North         East     Units Scale Factor Converg.
 DR9390;SPC MD       -   178,907.321   478,343.433   MT  0.99997405   +0 34 11.5
 DR9390;SPC MD       -   586,965.10  1,569,365.08   sFT  0.99997405   +0 34 11.5
 DR9390;UTM  18      - 4,347,845.393   405,802.766   MT  0.99970925   -0 41 28.9
 DR9390
 DR9390!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9390!SPC MD       -   1.00000171  x   0.99997405  =   0.99997576
 DR9390!UTM  18      -   1.00000171  x   0.99970925  =   0.99971096
 DR9390
 DR9390_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0580247845(NAD 83)
 DR9390
 DR9390                          SUPERSEDED SURVEY CONTROL
 DR9390
 DR9390.No superseded survey control is available for this station.
 DR9390
 DR9390_MARKER: DD = SURVEY DISK
 DR9390_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DR9390_SP_SET: CULVERT HEADWALL
 DR9390_STAMPING: B71 AZ 2021
 DR9390_MARK LOGO: MD-029
 DR9390_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9390_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9390+STABILITY: SURFACE MOTION
 DR9390_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9390+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9390
 DR9390  HISTORY     - Date     Condition        Report By
 DR9390  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9390  HISTORY     - 20250416 GOOD             PROFLN
 DR9390
 DR9390                          STATION DESCRIPTION
 DR9390
 DR9390'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9390'THE MARK IS LOCATED ABOUT 4.7 MI (7.6 KM) NORTH-NORTHWEST OF
 DR9390'CHESTERTOWN, 2.3 MI (3.7 KM) EAST OF HANESVILLE, 2.1 MI (3.4 KM)
 DR9390'SOUTHWEST OF LYNCH AND IN THE TOWN OF WORTON, MD.
 DR9390'
 DR9390'TO REACH THE MARK FROM THE JUNCTION OF MD 213 AND MD 297 N, GO
 DR9390'NORTHWEST ON MD 297 N FOR 2.83 MI (4.55 KM) TO THE MARK ON THE RIGHT.
 DR9390'
 DR9390'THE MARK IS 89.7 FT (27.3 M) SOUTH OF A UTILITY POLE NUMBERED 26391,
 DR9390'69.7 FT (21.2 M) EAST-NORTHEAST OF A RAILROAD CROSSING SIGNAL POLE
 DR9390'WITH SIGN, 51.4 FT (15.7 M) NORTH-NORTHWEST OF THE INTERSECTION OF
 DR9390'WORTON ROAD AND A SET OF RAIL ROAD TRACKS, 51.0 FT (15.5 M) SOUTH OF
 DR9390'THE CENTERLINE OF A PAVED/GRAVEL DRIVEWAY FOR 18029 WORTON ROAD, 50.9
 DR9390'FT (15.5 M) NORTH OF A RAILROAD CROSSING SIGNAL POLE WITH SIGN, 24.3
 DR9390'FT (7.4 M) EAST OF THE CENTERLINE OF WORTON ROAD AND ABOUT 1.5 FT (0.5
 DR9390'M) LOWER THAN THE ROAD.
 DR9390
 DR9390                          STATION RECOVERY (2025)
 DR9390
 DR9390'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9390'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1216 ***********************************************************************
 JU1216  DESIGNATION -  B 72
 JU1216  PID         -  JU1216
 JU1216  STATE/COUNTY-  MD/KENT
 JU1216  COUNTRY     -  US
 JU1216  USGS QUAD   -  GALENA (2017)
 JU1216
 JU1216                         *CURRENT SURVEY CONTROL
 JU1216  ______________________________________________________________________
 JU1216* NAD 83(1986) POSITION- 39 16 34.     (N) 075 54 54.     (W)   SCALED
 JU1216* NAVD 88 ORTHO HEIGHT -    16.574 (meters)       54.38  (feet) ADJUSTED
 JU1216  ______________________________________________________________________
 JU1216  GEOID HEIGHT    -        -33.537 (meters)                     GEOID18
 JU1216  DYNAMIC HEIGHT  -         16.565 (meters)       54.35  (feet) COMP
 JU1216  MODELED GRAVITY -    980,111.1   (mgal)                       NAVD 88
 JU1216
 JU1216  VERT ORDER      -  SECOND    CLASS 0
 JU1216
 JU1216.The horizontal coordinates were scaled from a map and have
 JU1216.an estimated accuracy of +/- 6 seconds.
 JU1216
 JU1216.The orthometric height was determined by differential leveling and
 JU1216.adjusted by the NATIONAL GEODETIC SURVEY
 JU1216.in June 1991.
 JU1216
 JU1216.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1216.GEOID18 height accuracy estimate available here.
 JU1216
 JU1216.Click photographs - Photos may exist for this station.
 JU1216
 JU1216.The dynamic height is computed by dividing the NAVD 88
 JU1216.geopotential number by the normal gravity value computed on the
 JU1216.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1216.degrees latitude (g = 980.6199 gals.).
 JU1216
 JU1216.The modeled gravity was interpolated from observed gravity values.
 JU1216
 JU1216;                    North         East    Units  Estimated Accuracy
 JU1216;SPC MD       -   179,220.      493,620.      MT  (+/- 180 meters Scaled)
 JU1216
 JU1216_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ210478(NAD 83)
 JU1216
 JU1216                          SUPERSEDED SURVEY CONTROL
 JU1216
 JU1216  NGVD 29 (11/26/84)   16.816  (m)           55.17   (f) ADJUSTED    2 0
 JU1216
 JU1216.Superseded values are not recommended for survey control.
 JU1216
 JU1216.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1216.See file dsdata.pdf to determine how the superseded data were derived.
 JU1216
 JU1216_MARKER: DB = BENCH MARK DISK
 JU1216_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JU1216_SP_SET: CULVERT
 JU1216_STAMPING: B 72 1942
 JU1216_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU1216
 JU1216  HISTORY     - Date     Condition        Report By
 JU1216  HISTORY     - 1942     MONUMENTED       CGS
 JU1216  HISTORY     - 1964     GOOD             CGS
 JU1216  HISTORY     - 19890124 MARK NOT FOUND   USPSQD
 JU1216  HISTORY     - 20050101 MARK NOT FOUND   USPSQD
 JU1216
 JU1216                          STATION DESCRIPTION
 JU1216
 JU1216'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1216'AT CHESTERVILLE.
 JU1216'AT CHESTERVILLE, KENT
 JU1216'COUNTY, IN THE SOUTHEAST ANGLE OF THE CROSSROADS, IN THE OPPOSITE
 JU1216'ANGLE FROM A BRICK STORE BUILDING, 34.8 FEET SOUTHEAST OF THE
 JU1216'CENTER OF THE HIGHWAY INTERSECTION, AT A DUAL BARREL CULVERT,
 JU1216'AND IN THE TOP OF THE HEADWALL.  A STANDARD DISK, STAMPED B 72
 JU1216'1942.
 JU1216'NOTE--THE TURN AT THE CROSSROAD AT THIS POINT IS NOW MACADAMED OVER
 JU1216'AND IT WAS NOT DUG THROUGH TO RECOVER THE MARK, PROBABLY IS
 JU1216'RECOVERABLE.
 JU1216
 JU1216                          STATION RECOVERY (1989)
 JU1216
 JU1216'RECOVERY NOTE BY US POWER SQUADRON 1989 (GSW)
 JU1216'MARK NOT FOUND.
 JU1216
 JU1216                          STATION RECOVERY (2005)
 JU1216
 JU1216'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JU1216'MARK PLOTS UNDER THE SE RADIOU OF THE INTERSECTION OF 290 AND 444.
 JU1216'OLD CAST IRON GRATE REMAINS IN USE.  MARK IS PROBABLY COVERED BY
 JU1216'MACADAM AS REPORTED IN 1964.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0220 ***********************************************************************
 HV0220  DESIGNATION -  B 73
 HV0220  PID         -  HV0220
 HV0220  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0220  COUNTRY     -  US
 HV0220  USGS QUAD   -  ANNAPOLIS (2016)
 HV0220
 HV0220                         *CURRENT SURVEY CONTROL
 HV0220  ______________________________________________________________________
 HV0220* NAD 83(1986) POSITION- 38 56 29.     (N) 076 27 01.     (W)   SCALED
 HV0220* NAVD 88 ORTHO HEIGHT -     2.012 (meters)        6.60  (feet) ADJUSTED
 HV0220  ______________________________________________________________________
 HV0220  GEOID HEIGHT    -        -33.467 (meters)                     GEOID18
 HV0220  DYNAMIC HEIGHT  -          2.011 (meters)        6.60  (feet) COMP
 HV0220  MODELED GRAVITY -    980,074.1   (mgal)                       NAVD 88
 HV0220
 HV0220  VERT ORDER      -  SECOND    CLASS 0
 HV0220
 HV0220.The horizontal coordinates were scaled from a map and have
 HV0220.an estimated accuracy of +/- 6 seconds.
 HV0220
 HV0220.The orthometric height was determined by differential leveling and
 HV0220.adjusted by the NATIONAL GEODETIC SURVEY
 HV0220.in June 1991.
 HV0220
 HV0220.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0220.GEOID18 height accuracy estimate available here.
 HV0220
 HV0220.Click photographs - Photos may exist for this station.
 HV0220
 HV0220.The dynamic height is computed by dividing the NAVD 88
 HV0220.geopotential number by the normal gravity value computed on the
 HV0220.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0220.degrees latitude (g = 980.6199 gals.).
 HV0220
 HV0220.The modeled gravity was interpolated from observed gravity values.
 HV0220
 HV0220;                    North         East    Units  Estimated Accuracy
 HV0220;SPC MD       -   141,640.      447,660.      MT  (+/- 180 meters Scaled)
 HV0220
 HV0220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ743112(NAD 83)
 HV0220
 HV0220                          SUPERSEDED SURVEY CONTROL
 HV0220
 HV0220  NGVD 29 (11/26/84)    2.262  (m)            7.42   (f) ADJUSTED    2 0
 HV0220
 HV0220.Superseded values are not recommended for survey control.
 HV0220
 HV0220.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0220.See file dsdata.pdf to determine how the superseded data were derived.
 HV0220
 HV0220_MARKER: DB = BENCH MARK DISK
 HV0220_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0220_SP_SET: STONE AND CONCRETE BULKHEAD
 HV0220_STAMPING: B 73 1942
 HV0220_MARK LOGO: CGS
 HV0220_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0220_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0220+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2005
 HV0220
 HV0220  HISTORY     - Date     Condition        Report By
 HV0220  HISTORY     - 1942     MONUMENTED       CGS
 HV0220  HISTORY     - 1942     GOOD             CGS
 HV0220  HISTORY     - 1973     GOOD             MDSFC
 HV0220  HISTORY     - 20010213 GOOD             USPSQD
 HV0220  HISTORY     - 20051215 GOOD             USPSQD
 HV0220
 HV0220                          STATION DESCRIPTION
 HV0220
 HV0220'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0220'AT BAY RIDGE.
 HV0220'AT BAY RIDGE, ALONG THE RIVER DRIVE ROAD, SET IN TOP OF THE
 HV0220'SOUTHEAST END OF THE STONE AND CONCRETE BULKHEAD, JUST NORTHWEST
 HV0220'OF THE END OF THE BULKHEAD, 30 FEET NORTH OF THE CENTER LINE OF
 HV0220'RIVER DRIVE ROAD, JUST NORTHWEST OF THE POINT WHERE THE STONE
 HV0220'BULKHEAD JOINS TO A WOODEN BULKHEAD WHICH CONTINUES SOUTHEAST
 HV0220'ALONG THE SHORE LINE, 2 1/2 FEET HIGHER THAN THE ROAD AND IS A
 HV0220'BENCH MARK DISK SET IN A DRILL HOLE.
 HV0220
 HV0220                          STATION RECOVERY (1973)
 HV0220
 HV0220'RECOVERY NOTE BY MARYLAND SHELL FISHERIES COMMISSION 1973
 HV0220'RECOVERED IN GOOD CONDITION.
 HV0220
 HV0220                          STATION RECOVERY (2001)
 HV0220
 HV0220'RECOVERY NOTE BY US POWER SQUADRON 2001 (CRA)
 HV0220'RECOVERED IN GOOD CONDITION.
 HV0220
 HV0220                          STATION RECOVERY (2005)
 HV0220
 HV0220'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV0220'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3603 ***********************************************************************
 JV3603  DESIGNATION -  B 74
 JV3603  PID         -  JV3603
 JV3603  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV3603  COUNTRY     -  US
 JV3603  USGS QUAD   -  GIBSON ISLAND (2017)
 JV3603
 JV3603                         *CURRENT SURVEY CONTROL
 JV3603  ______________________________________________________________________
 JV3603* NAD 83(1986) POSITION- 39 06 27.     (N) 076 29 39.     (W)   SCALED
 JV3603* NAVD 88 ORTHO HEIGHT -    14.953 (meters)       49.06  (feet) ADJUSTED
 JV3603  ______________________________________________________________________
 JV3603  GEOID HEIGHT    -        -33.148 (meters)                     GEOID18
 JV3603  DYNAMIC HEIGHT  -         14.944 (meters)       49.03  (feet) COMP
 JV3603  MODELED GRAVITY -    980,081.6   (mgal)                       NAVD 88
 JV3603
 JV3603  VERT ORDER      -  SECOND    CLASS 0
 JV3603
 JV3603.The horizontal coordinates were scaled from a map and have
 JV3603.an estimated accuracy of +/- 6 seconds.
 JV3603
 JV3603.The orthometric height was determined by differential leveling and
 JV3603.adjusted by the NATIONAL GEODETIC SURVEY
 JV3603.in June 1991.
 JV3603
 JV3603.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3603.GEOID18 height accuracy estimate available here.
 JV3603
 JV3603.Click photographs - Photos may exist for this station.
 JV3603
 JV3603.The dynamic height is computed by dividing the NAVD 88
 JV3603.geopotential number by the normal gravity value computed on the
 JV3603.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3603.degrees latitude (g = 980.6199 gals.).
 JV3603
 JV3603.The modeled gravity was interpolated from observed gravity values.
 JV3603
 JV3603;                    North         East    Units  Estimated Accuracy
 JV3603;SPC MD       -   160,060.      443,750.      MT  (+/- 180 meters Scaled)
 JV3603
 JV3603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ708297(NAD 83)
 JV3603
 JV3603                          SUPERSEDED SURVEY CONTROL
 JV3603
 JV3603  NGVD 29 (11/26/84)   15.195  (m)           49.85   (f) ADJUSTED    2 0
 JV3603
 JV3603.Superseded values are not recommended for survey control.
 JV3603
 JV3603.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3603.See file dsdata.pdf to determine how the superseded data were derived.
 JV3603
 JV3603_MARKER: DB = BENCH MARK DISK
 JV3603_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3603_STAMPING: B 74 1942
 JV3603_MARK LOGO: CGS
 JV3603_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3603+STABILITY: SURFACE MOTION
 JV3603
 JV3603  HISTORY     - Date     Condition        Report By
 JV3603  HISTORY     - 1942     MONUMENTED       CGS
 JV3603
 JV3603                          STATION DESCRIPTION
 JV3603
 JV3603'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3603'2.2 MI E FROM JACOBSVILLE.
 JV3603'ALONG HIGHWAY 177 ABOUT 2.2 MILES EAST OF THE SCHOOL AT JACOBSVILLE,
 JV3603'0.1 MILE SOUTHEAST OF A T ROAD JUNCTION TO THE SOUTHWEST, 100 FEET
 JV3603'SOUTHEAST OF MILEAGE MARKER NUMBER 62, 22 FEET SOUTHWEST OF THE
 JV3603'CENTER LINE OF THE HIGHWAY, AT THE NORTHEAST CORNER OF THE YARD
 JV3603'AT A YELLOW 2-STORY HOUSE, 3 FEET SOUTHEAST OF THE SOUTHEAST END
 JV3603'OF A HEDGE ROW AROUND THE HOUSE, 3 FEET SOUTHWEST OF A LINE OF
 JV3603'CABLE POLES, 10 FEET SOUTHEAST OF THE MOST NORTHEASTERLY LOCUST
 JV3603'TREE IN THE YARD AND IS A BENCH MARK DISK SET IN THE TOP OF A
 JV3603'CONCRETE POST PROJECTING 4 INCHES.  STAMPED B 74 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0055 ***********************************************************************
 HV0055  DESIGNATION -  B 75
 HV0055  PID         -  HV0055
 HV0055  STATE/COUNTY-  MD/QUEEN ANNES
 HV0055  COUNTRY     -  US
 HV0055  USGS QUAD   -  WYE MILLS (2016)
 HV0055
 HV0055                         *CURRENT SURVEY CONTROL
 HV0055  ______________________________________________________________________
 HV0055* NAD 83(1986) POSITION- 38 57 25.     (N) 076 03 57.     (W)   SCALED
 HV0055* NAVD 88 ORTHO HEIGHT -    14.731 (meters)       48.33  (feet) ADJUSTED
 HV0055  ______________________________________________________________________
 HV0055  GEOID HEIGHT    -        -34.171 (meters)                     GEOID18
 HV0055  DYNAMIC HEIGHT  -         14.722 (meters)       48.30  (feet) COMP
 HV0055  MODELED GRAVITY -    980,067.8   (mgal)                       NAVD 88
 HV0055
 HV0055  VERT ORDER      -  FIRST     CLASS II
 HV0055
 HV0055.The horizontal coordinates were scaled from a map and have
 HV0055.an estimated accuracy of +/- 6 seconds.
 HV0055
 HV0055.The orthometric height was determined by differential leveling and
 HV0055.adjusted by the NATIONAL GEODETIC SURVEY
 HV0055.in June 1991.
 HV0055
 HV0055.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0055.GEOID18 height accuracy estimate available here.
 HV0055
 HV0055.Click photographs - Photos may exist for this station.
 HV0055
 HV0055.The dynamic height is computed by dividing the NAVD 88
 HV0055.geopotential number by the normal gravity value computed on the
 HV0055.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0055.degrees latitude (g = 980.6199 gals.).
 HV0055
 HV0055.The modeled gravity was interpolated from observed gravity values.
 HV0055
 HV0055;                    North         East    Units  Estimated Accuracy
 HV0055;SPC MD       -   143,640.      480,970.      MT  (+/- 180 meters Scaled)
 HV0055
 HV0055_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ076125(NAD 83)
 HV0055
 HV0055                          SUPERSEDED SURVEY CONTROL
 HV0055
 HV0055  NGVD 29 (11/26/84)   14.960  (m)           49.08   (f) ADJUSTED    1 2
 HV0055
 HV0055.Superseded values are not recommended for survey control.
 HV0055
 HV0055.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0055.See file dsdata.pdf to determine how the superseded data were derived.
 HV0055
 HV0055_MARKER: DB = BENCH MARK DISK
 HV0055_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0055_STAMPING: B 75 1942
 HV0055_MARK LOGO: CGS
 HV0055_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0055+STABILITY: SURFACE MOTION
 HV0055
 HV0055  HISTORY     - Date     Condition        Report By
 HV0055  HISTORY     - 1942     MONUMENTED       CGS
 HV0055  HISTORY     - 1971     GOOD             NGS
 HV0055  HISTORY     - 19910110 GOOD             NGS
 HV0055  HISTORY     - 20010324 POOR             USPSQD
 HV0055
 HV0055                          STATION DESCRIPTION
 HV0055
 HV0055'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0055'1.8 MI NE FROM WYE MILLS.
 HV0055'ABOUT 0.95 MILES NORTH ALONG STATE HIGHWAY 662 FROM THE POST
 HV0055'OFFICE AT WYE MILLS, THENCE 0.1 MILE NORTH ALONG U.S. HIGHWAY
 HV0055'213, THENCE 0.7 MILE EAST ALONG GRANGE HALL ROAD, AT THE CROSSING
 HV0055'OF THE BALTIMORE AND EASTERN RAILROAD, 112 1/2 FEET SOUTHEAST
 HV0055'OF THE CENTER OF THE CROSSING, 64 1/2 FEET SOUTH OF THE CENTER
 HV0055'LINE OF GRANGE HALL ROAD, 17.1 FEET NORTHEAST OF THE NORTHEAST
 HV0055'RAIL OF THE TRACK, 0.8 FOOT NORTHEAST OF A METAL WITNESS POST,
 HV0055'ABOUT LEVEL WITH THE ROAD AND SET IN THE TOP OF A CONCRETE POST
 HV0055'PROJECTING 6 INCHES ABOVE THE LEVEL OF THE GROUND.  NOTE-- THE
 HV0055'ABOVE MARK IS ABOUT 0.8 MILE SOUTHEAST ALONG THE BALTIMORE AND
 HV0055'EASTERN RAILROAD FROM BENCH MARK E 9 DESCRIBED.
 HV0055
 HV0055                          STATION RECOVERY (1991)
 HV0055
 HV0055'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV0055'RECOVERED IN GOOD CONDITION.
 HV0055
 HV0055                          STATION RECOVERY (2001)
 HV0055
 HV0055'RECOVERY NOTE BY US POWER SQUADRON 2001 (KNP)
 HV0055'RAILROAD NO LONGER EXISTS. RIGHT OF WAY REMAINS. WITNESS POST
 HV0055'DESTROYED. MARK AND MONUMENT LYING ON SIDE FOUR INCHES UNDER PARKING
 HV0055'LOT SURFACE. MARK IS 72.3 FEET SOUTHWEST OF POWER POLE 33742. MARK IS
 HV0055'NOW IN NORTHWEST CORNER OF FRIEL PACKING HOUSE LOT. MARK AND WITNESS
 HV0055'POST BASE RECOVERED USING METAL DETECTOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0174 ***********************************************************************
 HV0174  DESIGNATION -  B 76
 HV0174  PID         -  HV0174
 HV0174  STATE/COUNTY-  MD/QUEEN ANNES
 HV0174  COUNTRY     -  US
 HV0174  USGS QUAD   -  KENT ISLAND (2016)
 HV0174
 HV0174                         *CURRENT SURVEY CONTROL
 HV0174  ______________________________________________________________________
 HV0174* NAD 83(1986) POSITION- 38 56 53.     (N) 076 21 03.     (W)   SCALED
 HV0174* NAVD 88 ORTHO HEIGHT -     4.249 (meters)       13.94  (feet) ADJUSTED
 HV0174  ______________________________________________________________________
 HV0174  GEOID HEIGHT    -        -33.609 (meters)                     GEOID18
 HV0174  DYNAMIC HEIGHT  -          4.246 (meters)       13.93  (feet) COMP
 HV0174  MODELED GRAVITY -    980,077.4   (mgal)                       NAVD 88
 HV0174
 HV0174  VERT ORDER      -  SECOND    CLASS 0
 HV0174
 HV0174.The horizontal coordinates were scaled from a map and have
 HV0174.an estimated accuracy of +/- 6 seconds.
 HV0174
 HV0174.The orthometric height was determined by differential leveling and
 HV0174.adjusted by the NATIONAL GEODETIC SURVEY
 HV0174.in June 1991.
 HV0174
 HV0174.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0174.GEOID18 height accuracy estimate available here.
 HV0174
 HV0174.Click photographs - Photos may exist for this station.
 HV0174
 HV0174.The dynamic height is computed by dividing the NAVD 88
 HV0174.geopotential number by the normal gravity value computed on the
 HV0174.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0174.degrees latitude (g = 980.6199 gals.).
 HV0174
 HV0174.The modeled gravity was interpolated from observed gravity values.
 HV0174
 HV0174;                    North         East    Units  Estimated Accuracy
 HV0174;SPC MD       -   142,440.      456,270.      MT  (+/- 180 meters Scaled)
 HV0174
 HV0174_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ829118(NAD 83)
 HV0174
 HV0174                          SUPERSEDED SURVEY CONTROL
 HV0174
 HV0174  NGVD 29 (11/26/84)    4.485  (m)           14.71   (f) ADJUSTED    2 0
 HV0174
 HV0174.Superseded values are not recommended for survey control.
 HV0174
 HV0174.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0174.See file dsdata.pdf to determine how the superseded data were derived.
 HV0174
 HV0174_MARKER: DB = BENCH MARK DISK
 HV0174_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0174_STAMPING: B 76 1942
 HV0174_MARK LOGO: CGS
 HV0174_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0174+STABILITY: SURFACE MOTION
 HV0174
 HV0174  HISTORY     - Date     Condition        Report By
 HV0174  HISTORY     - 1942     MONUMENTED       CGS
 HV0174  HISTORY     - 1971     GOOD             NGS
 HV0174  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 HV0174
 HV0174                          STATION DESCRIPTION
 HV0174
 HV0174'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0174'3.2 MI SW FROM STEVENSVILLE.
 HV0174'THIS MARK IS ABOUT 3.2 MILES SOUTHWEST FROM THE WYE JUNCTION
 HV0174'OF HIGHWAY 404 AND 18 AT STEVENSVILLE, ON HIGHWAY 404, AND 0.5
 HV0174'MILES FROM THE T JUNCTION OF HIGHWAY 404 AND 33, SET IN THE
 HV0174'WEST SIDE OF THE WOODS, 21.7 FEET WEST OF THE CENTER LINE OF
 HV0174'THE HIGHWAY, 16.4 FEET NORTHEAST OF A TWIN SPRUCE PINE, NEAR
 HV0174'A WHITE REFERENCE POST, AND SET IN THE TOP OF A CONCRETE POST.
 HV0174'A STANDARD DISK.  3.3 MILES SOUTH ALONG STATE HIGHWAY 33 FROM
 HV0174'THE JUNCTION OF U.S. HIGHWAY 50 AT STEVENSVILLE, 0.1 MILE
 HV0174'SOUTH OF THE ABANDONED BATTS NECK SCHOOL.  NOTE-- THE OLD
 HV0174'HIGHWAY 33 NO LONGER EXISTS, THE NEW HIGHWAY IS
 HV0174'HIGHWAY 18.  THE MARK IS APPROX. THE DISTANCE FROM
 HV0174'STEVENSVILLE BUT IN THE WOODS EAST OF HIGHWAY 18.  TRACES OF
 HV0174'THE OLD HIGHWAY STILL EXIST.  DESCRIPTION SHOULD BE CHANGED
 HV0174'COMPLETELY.  DUE TO THE NEW HIGHWAY, WE COULD NOT FIND
 HV0174'AND OTHER MARKERS FROM ROUTE 50 SOUTH TO END OF LINE.  MARKERS
 HV0174'MAY STILL EXIST BUT DESCRIPTIONS ARE OF NO HELP.
 HV0174
 HV0174                          STATION RECOVERY (1971)
 HV0174
 HV0174'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0174'RECOVERED IN GOOD CONDITION.
 HV0174
 HV0174                          STATION RECOVERY (1983)
 HV0174
 HV0174'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0174'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0843 ***********************************************************************
 HU0843  DESIGNATION -  B 77
 HU0843  PID         -  HU0843
 HU0843  STATE/COUNTY-  MD/CAROLINE
 HU0843  COUNTRY     -  US
 HU0843  USGS QUAD   -  DENTON (2017)
 HU0843
 HU0843                         *CURRENT SURVEY CONTROL
 HU0843  ______________________________________________________________________
 HU0843* NAD 83(1986) POSITION- 38 52 55.7    (N) 075 46 59.1    (W)   HD_HELD2
 HU0843* NAVD 88 ORTHO HEIGHT -    11.983 (meters)       39.31  (feet) ADJUSTED
 HU0843  ______________________________________________________________________
 HU0843  GEOID HEIGHT    -        -34.934 (meters)                     GEOID18
 HU0843  DYNAMIC HEIGHT  -         11.976 (meters)       39.29  (feet) COMP
 HU0843  MODELED GRAVITY -    980,039.4   (mgal)                       NAVD 88
 HU0843
 HU0843  VERT ORDER      -  SECOND    CLASS 0
 HU0843
 HU0843.The horizontal coordinates were established by autonomous hand held GPS
 HU0843.observations and have an estimated accuracy of +/- 10 meters.
 HU0843
 HU0843.The orthometric height was determined by differential leveling and
 HU0843.adjusted by the NATIONAL GEODETIC SURVEY
 HU0843.in April 1995.
 HU0843
 HU0843.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0843.GEOID18 height accuracy estimate available here.
 HU0843
 HU0843.Click photographs - Photos may exist for this station.
 HU0843
 HU0843.The dynamic height is computed by dividing the NAVD 88
 HU0843.geopotential number by the normal gravity value computed on the
 HU0843.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0843.degrees latitude (g = 980.6199 gals.).
 HU0843
 HU0843.The modeled gravity was interpolated from observed gravity values.
 HU0843
 HU0843;                    North         East    Units  Estimated Accuracy
 HU0843;SPC MD       -   135,626.      505,583.      MT  (+/- 10 meters HH2 GPS)
 HU0843
 HU0843_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3207803988(NAD 83)
 HU0843
 HU0843                          SUPERSEDED SURVEY CONTROL
 HU0843
 HU0843  NAVD 88 (06/15/91)   11.966  (m)           39.26   (f) SUPERSEDED  2 0
 HU0843  NGVD 29 (11/26/84)   12.207  (m)           40.05   (f) ADJUSTED    2 0
 HU0843
 HU0843.Superseded values are not recommended for survey control.
 HU0843
 HU0843.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0843.See file dsdata.pdf to determine how the superseded data were derived.
 HU0843
 HU0843_MARKER: DB = BENCH MARK DISK
 HU0843_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0843_STAMPING: B 77 1942
 HU0843_MARK LOGO: CGS
 HU0843_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0843_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0843+STABILITY: SURFACE MOTION
 HU0843_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0843+SATELLITE: SATELLITE OBSERVATIONS - December 03, 2003
 HU0843
 HU0843  HISTORY     - Date     Condition        Report By
 HU0843  HISTORY     - 1942     MONUMENTED       CGS
 HU0843  HISTORY     - 1964     GOOD             CGS
 HU0843  HISTORY     - 19910103 GOOD             NGS
 HU0843  HISTORY     - 20021010 GOOD             MDSHA
 HU0843  HISTORY     - 20031203 GOOD             USPSQD
 HU0843
 HU0843                          STATION DESCRIPTION
 HU0843
 HU0843'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0843'1.2 MI NE FROM HOBBS.
 HU0843'1.2 MILES NORTHEAST ALONG ROAD NO. 474 FROM THE Y-JUNCTION OF A
 HU0843'DIRT ROAD AT HOBBS, CAROLINE COUNTY, THENCE 0.7 MILE NORTHEAST
 HU0843'ALONG A DIRT ROAD, 59.3 FEET SOUTH ACROSS THE ROAD FROM A SINGLE
 HU0843'SWEETGUM TREE, IN THE NORTH CORNER OF A CULTIVATED FIELD,
 HU0843'19.3 FEET SOUTHEAST OF THE CENTER LINE OF THE DIRT ROAD, 2 FEET
 HU0843'NORTHWEST OF A WHITE WOODEN WITNESS POST, AND 2 FEET ABOVE THE
 HU0843'LEVEL OF THE ROAD.  A STANDARD DISK, STAMPED B 77 1942 AND SET
 HU0843'IN THE TOP OF A CONCRETE POST.
 HU0843
 HU0843                          STATION RECOVERY (1964)
 HU0843
 HU0843'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HU0843'RECOVERED IN GOOD CONDITION.
 HU0843
 HU0843                          STATION RECOVERY (1991)
 HU0843
 HU0843'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU0843'2.3 KM (1.4 MI) EASTERLY ALONG WESLEYAN CENETER CAMPGROUND ROAD FROM
 HU0843'THE INTERSECTION OF STATE HIGHWAY 313 IN DENTON, THENCE 0.8 KM
 HU0843'(0.5 MI) NORTHERLY ALONG GARLAND ROAD, THENCE 1.6 KM (1.0 MI)
 HU0843'EASTERLY ALONG BAKER ROAD, THENCE 2.1 KM (1.3 MI) SOUTHERLY ALONG A
 HU0843'DIRT ROAD, ON THE WEST EDGE OF A TREE LINE, 0.3 KM (0.2 MI) NORTHEAST
 HU0843'OF THE JUNCTION OF ANTHONY MILL ROAD, 27.3 M (89.6 FT) NORTHEAST OF
 HU0843'THE NORTHWEST CORNER OF A HOUSE, 10.2 M (33.5 FT) SOUTHEAST OF
 HU0843'UTILITY PEDESTAL NUMBER 2, 5.7 M (18.7 FT) SOUTHEAST OF THE ROAD
 HU0843'CENTER, 0.6 M (2.0 FT) ABOVE THE LEVEL OF THE ROAD, 0.3 M (1.0 FT)
 HU0843'NORTHWEST OF A WITNESS POST, AND THE MONUMENT IS FLUSH WITH THE GROUND
 HU0843'SURFACE.
 HU0843
 HU0843                          STATION RECOVERY (2002)
 HU0843
 HU0843'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0843'RECOVERED AS DESCRIBED.
 HU0843
 HU0843                          STATION RECOVERY (2003)
 HU0843
 HU0843'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HU0843'REFERENCED DIRT ROAD, AT ITS JUNCTION WITH BAKER ROAD, HAS BEEN NAMED
 HU0843'ALMS HOUSE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1267 ***********************************************************************
 JU1267  DESIGNATION -  B 78
 JU1267  PID         -  JU1267
 JU1267  STATE/COUNTY-  MD/CAROLINE
 JU1267  COUNTRY     -  US
 JU1267  USGS QUAD   -  GOLDSBORO (2017)
 JU1267
 JU1267                         *CURRENT SURVEY CONTROL
 JU1267  ______________________________________________________________________
 JU1267* NAD 83(1986) POSITION- 39 06 17.     (N) 075 45 15.     (W)   SCALED
 JU1267* NAVD 88 ORTHO HEIGHT -    19.788 (meters)       64.92  (feet) ADJUSTED
 JU1267  ______________________________________________________________________
 JU1267  GEOID HEIGHT    -        -34.212 (meters)                     GEOID18
 JU1267  DYNAMIC HEIGHT  -         19.777 (meters)       64.89  (feet) COMP
 JU1267  MODELED GRAVITY -    980,080.5   (mgal)                       NAVD 88
 JU1267
 JU1267  VERT ORDER      -  SECOND    CLASS 0
 JU1267
 JU1267.The horizontal coordinates were scaled from a map and have
 JU1267.an estimated accuracy of +/- 6 seconds.
 JU1267
 JU1267.The orthometric height was determined by differential leveling and
 JU1267.adjusted by the NATIONAL GEODETIC SURVEY
 JU1267.in June 1991.
 JU1267
 JU1267.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1267.GEOID18 height accuracy estimate available here.
 JU1267
 JU1267.Click photographs - Photos may exist for this station.
 JU1267
 JU1267.The dynamic height is computed by dividing the NAVD 88
 JU1267.geopotential number by the normal gravity value computed on the
 JU1267.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1267.degrees latitude (g = 980.6199 gals.).
 JU1267
 JU1267.The modeled gravity was interpolated from observed gravity values.
 JU1267
 JU1267;                    North         East    Units  Estimated Accuracy
 JU1267;SPC MD       -   160,370.      507,760.      MT  (+/- 180 meters Scaled)
 JU1267
 JU1267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ347286(NAD 83)
 JU1267
 JU1267                          SUPERSEDED SURVEY CONTROL
 JU1267
 JU1267  NGVD 29 (11/26/84)   20.024  (m)           65.70   (f) ADJUSTED    2 0
 JU1267
 JU1267.Superseded values are not recommended for survey control.
 JU1267
 JU1267.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1267.See file dsdata.pdf to determine how the superseded data were derived.
 JU1267
 JU1267_MARKER: DB = BENCH MARK DISK
 JU1267_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1267_STAMPING: B 78 1942
 JU1267_MARK LOGO: CGS
 JU1267_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1267+STABILITY: SURFACE MOTION
 JU1267
 JU1267  HISTORY     - Date     Condition        Report By
 JU1267  HISTORY     - 1942     MONUMENTED       CGS
 JU1267  HISTORY     - 1967     MARK NOT FOUND   CGS
 JU1267  HISTORY     - 19900606 MARK NOT FOUND   USPSQD
 JU1267
 JU1267                          STATION DESCRIPTION
 JU1267
 JU1267'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JU1267'0.7 MI SW FROM MARYDEL.
 JU1267'0.7 MILE SOUTHWEST ALONG STATE HIGHWAY 311 FROM THE T-JUNCTION
 JU1267'OF STATE HIGHWAY 454 AT MARYDEL, CAROLINE COUNTY, 66.5 FEET
 JU1267'WEST OF THE SOUTHWEST CORNER OF A TWO STORY UNPAINTED HOUSE, 28
 JU1267'FEET EAST OF THE CENTERLINE OF THE HIGHWAY, 103.2 FEET NORTHEAST
 JU1267'ACROSS THE HIGHWAY FROM HIGHWAY MARKER 54, 61.4 FEET NORTHEAST
 JU1267'ACROSS THE HIGHWAY FROM POWER POLE 4 D-80, 4.6 FEET SOUTHEAST OF
 JU1267'THE WEST CORNER OF A ROW OF SHRUBBERY, AND 2 FEET WEST OF A
 JU1267'WHITE WOODEN WITNESS POST.  A STANDARD DISK, STAMPED B 78 1942 AND
 JU1267'SET IN THE TOP OF A CONCRETE POST.
 JU1267
 JU1267                          STATION RECOVERY (1967)
 JU1267
 JU1267'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JU1267'MARK NOT FOUND.
 JU1267
 JU1267                          STATION RECOVERY (1990)
 JU1267
 JU1267'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1267'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1172 ***********************************************************************
 JV1172  DESIGNATION -  B 79
 JV1172  PID         -  JV1172
 JV1172  STATE/COUNTY-  MD/BALTIMORE
 JV1172  COUNTRY     -  US
 JV1172  USGS QUAD   -  TOWSON (2016)
 JV1172
 JV1172                         *CURRENT SURVEY CONTROL
 JV1172  ______________________________________________________________________
 JV1172* NAD 83(1986) POSITION- 39 24 12.     (N) 076 33 52.     (W)   SCALED
 JV1172* NAVD 88 ORTHO HEIGHT -   104.104 (meters)      341.55  (feet) ADJUSTED
 JV1172  ______________________________________________________________________
 JV1172  GEOID HEIGHT    -        -32.660 (meters)                     GEOID18
 JV1172  DYNAMIC HEIGHT  -        104.047 (meters)      341.36  (feet) COMP
 JV1172  MODELED GRAVITY -    980,084.0   (mgal)                       NAVD 88
 JV1172
 JV1172  VERT ORDER      -  SECOND    CLASS 0
 JV1172
 JV1172.The horizontal coordinates were scaled from a map and have
 JV1172.an estimated accuracy of +/- 6 seconds.
 JV1172
 JV1172.The orthometric height was determined by differential leveling and
 JV1172.adjusted by the NATIONAL GEODETIC SURVEY
 JV1172.in June 1991.
 JV1172
 JV1172.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1172.GEOID18 height accuracy estimate available here.
 JV1172
 JV1172.Click photographs - Photos may exist for this station.
 JV1172
 JV1172.The dynamic height is computed by dividing the NAVD 88
 JV1172.geopotential number by the normal gravity value computed on the
 JV1172.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1172.degrees latitude (g = 980.6199 gals.).
 JV1172
 JV1172.The modeled gravity was interpolated from observed gravity values.
 JV1172
 JV1172;                    North         East    Units  Estimated Accuracy
 JV1172;SPC MD       -   192,870.      437,520.      MT  (+/- 180 meters Scaled)
 JV1172
 JV1172_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ653627(NAD 83)
 JV1172
 JV1172                          SUPERSEDED SURVEY CONTROL
 JV1172
 JV1172  NGVD 29 (11/26/84)  104.334  (m)          342.30   (f) ADJUSTED    2 0
 JV1172
 JV1172.Superseded values are not recommended for survey control.
 JV1172
 JV1172.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1172.See file dsdata.pdf to determine how the superseded data were derived.
 JV1172
 JV1172_MARKER: DB = BENCH MARK DISK
 JV1172_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1172_STAMPING: B 79 1942 342.289
 JV1172_MARK LOGO: CGS
 JV1172_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1172+STABILITY: SURFACE MOTION
 JV1172
 JV1172  HISTORY     - Date     Condition        Report By
 JV1172  HISTORY     - 1942     MONUMENTED       CGS
 JV1172  HISTORY     - 1959     GOOD             CGS
 JV1172  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV1172  HISTORY     - 20020322 MARK NOT FOUND   USPSQD
 JV1172
 JV1172                          STATION DESCRIPTION
 JV1172
 JV1172'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1172'2 MI SW FROM LOCH RAVEN.
 JV1172'2.0 MILES SOUTHWEST ALONG STATE HIGHWAY 547 (CROMWELL BRIDGE
 JV1172'ROAD) FROM THE GENERAL STORE AND TAVERN AT LOCH RAVEN, ABOUT 0.25
 JV1172'MILE NORTHEAST OF THE BALTIMORE BELTWAY (UNDER CONSTRUCTION IN
 JV1172'1959) ABOUT 0.1 MILE EAST OF THE INTERSECTION OF COWPENS AVENUE, 22
 JV1172'FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, 37.2 FEET WEST OF
 JV1172'THE WEST END OF THE SOUTH CONCRETE HEADWALL OF A 4-BY-4-FOOT
 JV1172'CONCRETE BOX CULVERT UNDER THE HIGHWAY, 24 FEET WEST OF A 36-INCH
 JV1172'OAK TREE, 5 FEET SOUTH OF TELEPHONE POLE NO. 36, 3 FEET ABOVE
 JV1172'THE LEVEL OF THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST
 JV1172'FLUSH WITH THE GROUND.
 JV1172
 JV1172                          STATION RECOVERY (1994)
 JV1172
 JV1172'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV1172'MARK NOT FOUND.
 JV1172
 JV1172                          STATION RECOVERY (2002)
 JV1172
 JV1172'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 JV1172'NEW CALVERT HAS REPLACED THE ORIGINAL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0224 ***********************************************************************
 JV0224  DESIGNATION -  B 80
 JV0224  PID         -  JV0224
 JV0224  STATE/COUNTY-  MD/HARFORD
 JV0224  COUNTRY     -  US
 JV0224  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0224
 JV0224                         *CURRENT SURVEY CONTROL
 JV0224  ______________________________________________________________________
 JV0224* NAD 83(1986) POSITION- 39 32 08.     (N) 076 28 46.     (W)   SCALED
 JV0224* NAVD 88 ORTHO HEIGHT -   169.589 (meters)      556.39  (feet) ADJUSTED
 JV0224  ______________________________________________________________________
 JV0224  GEOID HEIGHT    -        -32.583 (meters)                     GEOID18
 JV0224  DYNAMIC HEIGHT  -        169.500 (meters)      556.10  (feet) COMP
 JV0224  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV0224
 JV0224  VERT ORDER      -  SECOND    CLASS 0
 JV0224
 JV0224.The horizontal coordinates were scaled from a map and have
 JV0224.an estimated accuracy of +/- 6 seconds.
 JV0224
 JV0224.The orthometric height was determined by differential leveling and
 JV0224.adjusted by the NATIONAL GEODETIC SURVEY
 JV0224.in June 1991.
 JV0224
 JV0224.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0224.GEOID18 height accuracy estimate available here.
 JV0224
 JV0224.Click photographs - Photos may exist for this station.
 JV0224
 JV0224.The dynamic height is computed by dividing the NAVD 88
 JV0224.geopotential number by the normal gravity value computed on the
 JV0224.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0224.degrees latitude (g = 980.6199 gals.).
 JV0224
 JV0224.The modeled gravity was interpolated from observed gravity values.
 JV0224
 JV0224;                    North         East    Units  Estimated Accuracy
 JV0224;SPC MD       -   207,590.      444,750.      MT  (+/- 180 meters Scaled)
 JV0224
 JV0224_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ728772(NAD 83)
 JV0224
 JV0224                          SUPERSEDED SURVEY CONTROL
 JV0224
 JV0224  NGVD 29 (11/26/84)  169.831  (m)          557.19   (f) ADJUSTED    2 0
 JV0224
 JV0224.Superseded values are not recommended for survey control.
 JV0224
 JV0224.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0224.See file dsdata.pdf to determine how the superseded data were derived.
 JV0224
 JV0224_MARKER: DB = BENCH MARK DISK
 JV0224_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0224_STAMPING: B 80 1942
 JV0224_MARK LOGO: CGS
 JV0224_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0224+STABILITY: SURFACE MOTION
 JV0224_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0224+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2001
 JV0224
 JV0224  HISTORY     - Date     Condition        Report By
 JV0224  HISTORY     - 1942     MONUMENTED       CGS
 JV0224  HISTORY     - 1948     GOOD             CGS
 JV0224  HISTORY     - 20010217 GOOD             USPSQD
 JV0224
 JV0224                          STATION DESCRIPTION
 JV0224
 JV0224'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0224'0.6 MI SW FROM UPPER CROSSROADS.
 JV0224'ABOUT 0.55 MILE SOUTHWEST ALONG HIGHWAY 165 FROM THE INTERSECTION
 JV0224'AT UPPER CROSSROADS, HARFORD COUNTY, 27.7 FEET NORTHWEST OF THE
 JV0224'CENTER LINE OF THE HIGHWAY, 42.7 FEET EAST OF THE EAST CORNER OF
 JV0224'A TWO STORY YELLOW HOUSE, 16.0 FEET SOUTHWEST OF THE CENTER
 JV0224'LINE OF THE DRIVEWAY, SET IN THE EAST CORNER OF THE YARD, STAMPED
 JV0224'B 80 1942.  IN JULY 1944 IT WAS REPORTED THAT THE MARK IS ABOUT
 JV0224'200 FEET NORTH OF MONUMENT 2 TT-1/27.
 JV0224
 JV0224                          STATION RECOVERY (1948)
 JV0224
 JV0224'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948
 JV0224'RECOVERED IN GOOD CONDITION.
 JV0224
 JV0224                          STATION RECOVERY (2001)
 JV0224
 JV0224'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV0224'CHANGE TWO STORY YELLOW HOUSE TO TWO STORY WHITE HOUSE.  ADD AT END -
 JV0224'MARK IS UNDER A 5' DIAMETER BUSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1923 ***********************************************************************
 JV1923  DESIGNATION -  B 81
 JV1923  PID         -  JV1923
 JV1923  STATE/COUNTY-  MD/CARROLL
 JV1923  COUNTRY     -  US
 JV1923  USGS QUAD   -  LITTLESTOWN (2019)
 JV1923
 JV1923                         *CURRENT SURVEY CONTROL
 JV1923  ______________________________________________________________________
 JV1923* NAD 83(1986) POSITION- 39 40 38.     (N) 077 00 03.     (W)   SCALED
 JV1923* NAVD 88 ORTHO HEIGHT -   182.433 (meters)      598.53  (feet) ADJUSTED
 JV1923  ______________________________________________________________________
 JV1923  GEOID HEIGHT    -        -32.597 (meters)                     GEOID18
 JV1923  DYNAMIC HEIGHT  -        182.338 (meters)      598.22  (feet) COMP
 JV1923  MODELED GRAVITY -    980,102.5   (mgal)                       NAVD 88
 JV1923
 JV1923  VERT ORDER      -  SECOND    CLASS 0
 JV1923
 JV1923.The horizontal coordinates were scaled from a map and have
 JV1923.an estimated accuracy of +/- 6 seconds.
 JV1923
 JV1923.The orthometric height was determined by differential leveling and
 JV1923.adjusted by the NATIONAL GEODETIC SURVEY
 JV1923.in June 1991.
 JV1923
 JV1923.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1923.GEOID18 height accuracy estimate available here.
 JV1923
 JV1923.Click photographs - Photos may exist for this station.
 JV1923
 JV1923.The dynamic height is computed by dividing the NAVD 88
 JV1923.geopotential number by the normal gravity value computed on the
 JV1923.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1923.degrees latitude (g = 980.6199 gals.).
 JV1923
 JV1923.The modeled gravity was interpolated from observed gravity values.
 JV1923
 JV1923;                    North         East    Units  Estimated Accuracy
 JV1923;SPC MD       -   223,190.      399,930.      MT  (+/- 180 meters Scaled)
 JV1923
 JV1923_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ284938(NAD 83)
 JV1923
 JV1923                          SUPERSEDED SURVEY CONTROL
 JV1923
 JV1923  NGVD 29 (11/26/84)  182.631  (m)          599.18   (f) ADJUSTED    2 0
 JV1923
 JV1923.Superseded values are not recommended for survey control.
 JV1923
 JV1923.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1923.See file dsdata.pdf to determine how the superseded data were derived.
 JV1923
 JV1923_MARKER: DB = BENCH MARK DISK
 JV1923_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1923_STAMPING: B 81 1942
 JV1923_MARK LOGO: CGS
 JV1923_PROJECTION: PROJECTING 3 CENTIMETERS
 JV1923_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1923+STABILITY: SURFACE MOTION
 JV1923_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1923+SATELLITE: SATELLITE OBSERVATIONS - May 10, 2014
 JV1923
 JV1923  HISTORY     - Date     Condition        Report By
 JV1923  HISTORY     - 1942     MONUMENTED       CGS
 JV1923  HISTORY     - 20140510 GOOD             RODCON
 JV1923
 JV1923                          STATION DESCRIPTION
 JV1923
 JV1923'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1923'1.8 MI E FROM UNION MILLS.
 JV1923'1.8 MILES EAST ALONG DEEP RUN ROAD FROM THE POST OFFICE AT
 JV1923'UNION MILLS, CARROLL COUNTY, IN THE YARD OF THE ERBS HOME, 102
 JV1923'FEET NORTHEAST OF THE NORTHEAST CORNER OF THE TWO-STORY HOUSE,
 JV1923'27.3 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, 15 FEET
 JV1923'EAST OF THE CENTER LINE OF A DRIVEWAY LEADING SOUTH, AND 6.8
 JV1923'FEET SOUTH OF A POWER-TRANSMISSION LINE POLE.  A STANDARD DISK,
 JV1923'STAMPED B 81 1942 AND SET IN THE TOP OF A CONCRETE POST.
 JV1923
 JV1923                          STATION RECOVERY (2014)
 JV1923
 JV1923'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV1923'SEE PHOTOS FOR CONDITION OF DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1958 ***********************************************************************
 JV1958  DESIGNATION -  B 82
 JV1958  PID         -  JV1958
 JV1958  STATE/COUNTY-  MD/FREDERICK
 JV1958  COUNTRY     -  US
 JV1958  USGS QUAD   -  EMMITSBURG (2016)
 JV1958
 JV1958                         *CURRENT SURVEY CONTROL
 JV1958  ______________________________________________________________________
 JV1958* NAD 83(1986) POSITION- 39 41 36.     (N) 077 16 49.     (W)   SCALED
 JV1958* NAVD 88 ORTHO HEIGHT -   132.257 (meters)      433.91  (feet) ADJUSTED
 JV1958  ______________________________________________________________________
 JV1958  GEOID HEIGHT    -        -33.265 (meters)                     GEOID18
 JV1958  DYNAMIC HEIGHT  -        132.186 (meters)      433.68  (feet) COMP
 JV1958  MODELED GRAVITY -    980,087.7   (mgal)                       NAVD 88
 JV1958
 JV1958  VERT ORDER      -  SECOND    CLASS 0
 JV1958
 JV1958.The horizontal coordinates were scaled from a map and have
 JV1958.an estimated accuracy of +/- 6 seconds.
 JV1958
 JV1958.The orthometric height was determined by differential leveling and
 JV1958.adjusted by the NATIONAL GEODETIC SURVEY
 JV1958.in June 1991.
 JV1958
 JV1958.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1958.GEOID18 height accuracy estimate available here.
 JV1958
 JV1958.Click photographs - Photos may exist for this station.
 JV1958
 JV1958.The dynamic height is computed by dividing the NAVD 88
 JV1958.geopotential number by the normal gravity value computed on the
 JV1958.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1958.degrees latitude (g = 980.6199 gals.).
 JV1958
 JV1958.The modeled gravity was interpolated from observed gravity values.
 JV1958
 JV1958;                    North         East    Units  Estimated Accuracy
 JV1958;SPC MD       -   225,020.      375,960.      MT  (+/- 180 meters Scaled)
 JV1958
 JV1958_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ044962(NAD 83)
 JV1958
 JV1958                          SUPERSEDED SURVEY CONTROL
 JV1958
 JV1958  NGVD 29 (11/26/84)  132.453  (m)          434.56   (f) ADJUSTED    2 0
 JV1958
 JV1958.Superseded values are not recommended for survey control.
 JV1958
 JV1958.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1958.See file dsdata.pdf to determine how the superseded data were derived.
 JV1958
 JV1958_MARKER: DB = BENCH MARK DISK
 JV1958_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1958_STAMPING: B 82 1942
 JV1958_MARK LOGO: CGS
 JV1958_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1958+STABILITY: SURFACE MOTION
 JV1958
 JV1958  HISTORY     - Date     Condition        Report By
 JV1958  HISTORY     - 1942     MONUMENTED       CGS
 JV1958
 JV1958                          STATION DESCRIPTION
 JV1958
 JV1958'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1958'2.6 MI SE FROM EMMITSBURG.
 JV1958'2.6 MILES SOUTHEAST ALONG STATE HIGHWAY 32 FROM THE POST OFFICE
 JV1958'AT EMMITSBURG, FREDERICK COUNTY, 28.8 FEET SOUTHWEST OF THE
 JV1958'CENTER LINE OF THE HIGHWAY, 29 FEET NORTHWEST OF A POLE, AND
 JV1958'3.2 FEET NORTHEAST OF A NORTHWEST-AND-SOUTHEAST FENCE.  A STANDARD
 JV1958'DISK, STAMPED B 82 1942 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1681 ***********************************************************************
 JV1681  DESIGNATION -  B 83
 JV1681  PID         -  JV1681
 JV1681  STATE/COUNTY-  MD/CARROLL
 JV1681  COUNTRY     -  US
 JV1681  USGS QUAD   -  LINEBORO (2016)
 JV1681
 JV1681                         *CURRENT SURVEY CONTROL
 JV1681  ______________________________________________________________________
 JV1681* NAD 83(1986) POSITION- 39 41 48.     (N) 076 49 21.     (W)   SCALED
 JV1681* NAVD 88 ORTHO HEIGHT -   201.759 (meters)      661.94  (feet) ADJUSTED
 JV1681  ______________________________________________________________________
 JV1681  GEOID HEIGHT    -        -32.366 (meters)                     GEOID18
 JV1681  DYNAMIC HEIGHT  -        201.656 (meters)      661.60  (feet) COMP
 JV1681  MODELED GRAVITY -    980,110.7   (mgal)                       NAVD 88
 JV1681
 JV1681  VERT ORDER      -  SECOND    CLASS 0
 JV1681
 JV1681.The horizontal coordinates were scaled from a map and have
 JV1681.an estimated accuracy of +/- 6 seconds.
 JV1681
 JV1681.The orthometric height was determined by differential leveling and
 JV1681.adjusted by the NATIONAL GEODETIC SURVEY
 JV1681.in June 1991.
 JV1681
 JV1681.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1681.GEOID18 height accuracy estimate available here.
 JV1681
 JV1681.Click photographs - Photos may exist for this station.
 JV1681
 JV1681.The dynamic height is computed by dividing the NAVD 88
 JV1681.geopotential number by the normal gravity value computed on the
 JV1681.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1681.degrees latitude (g = 980.6199 gals.).
 JV1681
 JV1681.The modeled gravity was interpolated from observed gravity values.
 JV1681
 JV1681;                    North         East    Units  Estimated Accuracy
 JV1681;SPC MD       -   225,370.      415,230.      MT  (+/- 180 meters Scaled)
 JV1681
 JV1681_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ437956(NAD 83)
 JV1681
 JV1681                          SUPERSEDED SURVEY CONTROL
 JV1681
 JV1681  NGVD 29 (11/26/84)  201.972  (m)          662.64   (f) ADJUSTED    2 0
 JV1681
 JV1681.Superseded values are not recommended for survey control.
 JV1681
 JV1681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1681.See file dsdata.pdf to determine how the superseded data were derived.
 JV1681
 JV1681_MARKER: DB = BENCH MARK DISK
 JV1681_SETTING: 80 = SET IN A BOULDER
 JV1681_STAMPING: B 83 1942
 JV1681_MARK LOGO: CGS
 JV1681_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1681+STABILITY: SURFACE MOTION
 JV1681
 JV1681  HISTORY     - Date     Condition        Report By
 JV1681  HISTORY     - 1942     MONUMENTED       CGS
 JV1681  HISTORY     - 1975     GOOD             NGS
 JV1681  HISTORY     - 20070402 MARK NOT FOUND   MD-005
 JV1681
 JV1681                          STATION DESCRIPTION
 JV1681
 JV1681'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1681'1.1 MI NE FROM ALESIA.
 JV1681'1.1 MILES NORTHEAST ALONG THE WESTERN MARYLAND RAILWAY FROM THE
 JV1681'HIGHWAY CROSSING AT ALESIA, CARROLL COUNTY, 400 FEET NORTHEAST OF
 JV1681'A TWO-STORY BROWN HOUSE, NEAR POWER-TRANSMISSION LINE POLE 36-20,
 JV1681'IN THE TOP OF A BOULDER, AND 10 FEET SOUTHEAST OF THE TRACK.  A
 JV1681'STANDARD DISK, STAMPED B 83 1942.
 JV1681
 JV1681                          STATION RECOVERY (1975)
 JV1681
 JV1681'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 JV1681'RECOVERED IN GOOD CONDITION.
 JV1681
 JV1681                          STATION RECOVERY (2007)
 JV1681
 JV1681'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 JV1681'THE TWO-STORY HOUSE AND THE BASE OF A POWER-TRANSMISSION POLE WERE
 JV1681'FOUND AS DESCRIBED IN THE DATASHEET. DIRT AND ROCK HAVE SLID DOWN THE
 JV1681'HILL AND ONTO THE ROCK OUTCROPPINGS IN THE AREA OF THE BENCH MARK
 JV1681'DISK. THE DISK MAY STILL BE EXIST, HOWEVER WE WERE UNABLE TO RECOVER
 JV1681'IT AFTER SPENDING SOME TIME REMOVING DEBRIS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6505 ***********************************************************************
 JV6505  DESIGNATION -  B 84 RESET
 JV6505  PID         -  JV6505
 JV6505  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6505  COUNTRY     -  US
 JV6505  USGS QUAD   -  LANHAM (2016)
 JV6505
 JV6505                         *CURRENT SURVEY CONTROL
 JV6505  ______________________________________________________________________
 JV6505* NAD 83(1986) POSITION- 38 53 52.     (N) 076 48 49.     (W)   SCALED
 JV6505* NAVD 88 ORTHO HEIGHT -    42.58  (meters)      139.7   (feet) RESET
 JV6505  ______________________________________________________________________
 JV6505  GEOID HEIGHT    -        -32.577 (meters)                     GEOID18
 JV6505  VERT ORDER      -  THIRD
 JV6505
 JV6505.The horizontal coordinates were scaled from a map and have
 JV6505.an estimated accuracy of +/- 6 seconds.
 JV6505
 JV6505.The orthometric height was computed from unverified reset data.
 JV6505
 JV6505.No vertical observational check was made to the station.
 JV6505
 JV6505.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6505.GEOID18 height accuracy estimate available here.
 JV6505
 JV6505.Click photographs - Photos may exist for this station.
 JV6505
 JV6505;                    North         East    Units  Estimated Accuracy
 JV6505;SPC MD       -   136,680.      416,170.      MT  (+/- 180 meters Scaled)
 JV6505
 JV6505_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ427069(NAD 83)
 JV6505
 JV6505                          SUPERSEDED SURVEY CONTROL
 JV6505
 JV6505  NGVD 29 (11/18/05)   42.83   (m)          140.5    (f) RESET       3  
 JV6505
 JV6505.Superseded values are not recommended for survey control.
 JV6505
 JV6505.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6505.See file dsdata.pdf to determine how the superseded data were derived.
 JV6505
 JV6505_MARKER: DV = VERTICAL CONTROL DISK
 JV6505_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6505_SP_SET: CATCH BASIN
 JV6505_STAMPING: B 84 RESET 1989
 JV6505_MARK LOGO: NGS
 JV6505_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6505_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6505_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6505+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6505
 JV6505  HISTORY     - Date     Condition        Report By
 JV6505  HISTORY     - 1989     MONUMENTED       NGS
 JV6505
 JV6505                          STATION DESCRIPTION
 JV6505
 JV6505'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6505'THE MARKER IS LOCATED 3.15 KM (1.95 MI) EAST ALONG STATE HIGHWAY 214
 JV6505'(CENTRAL AVENUE) FROM ITS JUNCTION WITH INTERSTATE HIGHWAY 95, THIS
 JV6505'POINT IS 1.6 KM (1.00 MI) EAST OF THE INTERSECTION OF STATE HIGHWAYS
 JV6505'202 AND 214 IN LARGO.  IT IS SET IN A DRILL HOLE IN THE NORTHEAST
 JV6505'CORNER OF A CONCRETE CAP ATOP A LARGE CATCH BASIN, 0.76 M (2.5 FT)
 JV6505'NORTH-NORTHWEST OF THE NORTH CURB OF STATE HIGHWAY 214, 4.72 M
 JV6505'(15.5 FT) NORTH-NORTHEAST OF THE CENTER OF THE WEST BOUND LANE OF
 JV6505'STATE HIGHWAY 214, 0.15 M (0.5 FT) SOUTH OF THE NORTH CORNER OF THE
 JV6505'CONCRETE CAP ATOP THE CATCH BASIN AND 0.2 M (0.7 FT) HIGHER THAN THE
 JV6505'ROAD SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1149 ***********************************************************************
 HV1149  DESIGNATION -  B 85
 HV1149  PID         -  HV1149
 HV1149  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1149  COUNTRY     -  US
 HV1149  USGS QUAD   -  BOWIE (2016)
 HV1149
 HV1149                         *CURRENT SURVEY CONTROL
 HV1149  ______________________________________________________________________
 HV1149* NAD 83(1986) POSITION- 38 56 04.     (N) 076 44 52.     (W)   SCALED
 HV1149* NAVD 88 ORTHO HEIGHT -    32.461 (meters)      106.50  (feet) ADJUSTED
 HV1149  ______________________________________________________________________
 HV1149  GEOID HEIGHT    -        -32.715 (meters)                     GEOID18
 HV1149  DYNAMIC HEIGHT  -         32.443 (meters)      106.44  (feet) COMP
 HV1149  MODELED GRAVITY -    980,081.0   (mgal)                       NAVD 88
 HV1149
 HV1149  VERT ORDER      -  SECOND    CLASS 0
 HV1149
 HV1149.The horizontal coordinates were scaled from a map and have
 HV1149.an estimated accuracy of +/- 6 seconds.
 HV1149
 HV1149.The orthometric height was determined by differential leveling and
 HV1149.adjusted by the NATIONAL GEODETIC SURVEY
 HV1149.in June 1991.
 HV1149
 HV1149.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1149.GEOID18 height accuracy estimate available here.
 HV1149
 HV1149.Click photographs - Photos may exist for this station.
 HV1149
 HV1149.The dynamic height is computed by dividing the NAVD 88
 HV1149.geopotential number by the normal gravity value computed on the
 HV1149.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1149.degrees latitude (g = 980.6199 gals.).
 HV1149
 HV1149.The modeled gravity was interpolated from observed gravity values.
 HV1149
 HV1149;                    North         East    Units  Estimated Accuracy
 HV1149;SPC MD       -   140,760.      421,870.      MT  (+/- 180 meters Scaled)
 HV1149
 HV1149_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ485109(NAD 83)
 HV1149
 HV1149                          SUPERSEDED SURVEY CONTROL
 HV1149
 HV1149  NGVD 29 (11/26/84)   32.709  (m)          107.31   (f) ADJUSTED    2 0
 HV1149
 HV1149.Superseded values are not recommended for survey control.
 HV1149
 HV1149.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1149.See file dsdata.pdf to determine how the superseded data were derived.
 HV1149
 HV1149_MARKER: DB = BENCH MARK DISK
 HV1149_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1149_SP_SET: BRIDGE WALL
 HV1149_STAMPING: B 85 1942
 HV1149_MARK LOGO: CGS
 HV1149_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1149
 HV1149  HISTORY     - Date     Condition        Report By
 HV1149  HISTORY     - 1942     MONUMENTED       CGS
 HV1149  HISTORY     - 1957     MARK NOT FOUND   USGS
 HV1149
 HV1149                          STATION DESCRIPTION
 HV1149
 HV1149'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1149'1.3 MI N FROM MITCHELLVILLE.
 HV1149'ABOUT 1.3 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 HV1149'POST OFFCE AT MITCHELLVILLE (R.R. NAME MULLIKIN), PRINCE GEORGES
 HV1149'COUNTY, AT A CONCRETE BRIDGE OVER A CREEK, IN THE TOP OF THE
 HV1149'SOUTH END OF THE WEST WALL, 16.5 FEET WEST OF THE WEST RAIL, AND
 HV1149'ABOUT 3 FEET LOWER THAN THE TRACK.  A STANDARD DISK, STAMPED B
 HV1149'85 1942.
 HV1149
 HV1149                          STATION RECOVERY (1957)
 HV1149
 HV1149'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV1149'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1073 ***********************************************************************
 HV1073  DESIGNATION -  B 86
 HV1073  PID         -  HV1073
 HV1073  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1073  COUNTRY     -  US
 HV1073  USGS QUAD   -  PISCATAWAY (2016)
 HV1073
 HV1073                         *CURRENT SURVEY CONTROL
 HV1073  ______________________________________________________________________
 HV1073* NAD 83(1986) POSITION- 38 43 05.5    (N) 076 59 03.7    (W)   HD_HELD2
 HV1073* NAVD 88 ORTHO HEIGHT -    65.357 (meters)      214.43  (feet) ADJUSTED
 HV1073  ______________________________________________________________________
 HV1073  GEOID HEIGHT    -        -32.492 (meters)                     GEOID18
 HV1073  DYNAMIC HEIGHT  -         65.321 (meters)      214.31  (feet) COMP
 HV1073  MODELED GRAVITY -    980,075.5   (mgal)                       NAVD 88
 HV1073
 HV1073  VERT ORDER      -  SECOND    CLASS 0
 HV1073
 HV1073.The horizontal coordinates were established by autonomous hand held GPS
 HV1073.observations and have an estimated accuracy of +/- 10 meters.
 HV1073
 HV1073.The orthometric height was determined by differential leveling and
 HV1073.adjusted by the NATIONAL GEODETIC SURVEY
 HV1073.in June 1991.
 HV1073
 HV1073.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1073.GEOID18 height accuracy estimate available here.
 HV1073
 HV1073.Click photographs - Photos may exist for this station.
 HV1073
 HV1073.The dynamic height is computed by dividing the NAVD 88
 HV1073.geopotential number by the normal gravity value computed on the
 HV1073.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1073.degrees latitude (g = 980.6199 gals.).
 HV1073
 HV1073.The modeled gravity was interpolated from observed gravity values.
 HV1073
 HV1073;                    North         East    Units  Estimated Accuracy
 HV1073;SPC MD       -   116,724.      401,360.      MT  (+/- 10 meters HH2 GPS)
 HV1073
 HV1073_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2748387374(NAD 83)
 HV1073
 HV1073                          SUPERSEDED SURVEY CONTROL
 HV1073
 HV1073  NGVD 29 (05/01/89)   65.595  (m)          215.21   (f) ADJUSTED    2 0
 HV1073  NGVD 29 (??/??/87)   65.624  (m)          215.30   (f) SUPERSEDED  2 0
 HV1073
 HV1073.Superseded values are not recommended for survey control.
 HV1073
 HV1073.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1073.See file dsdata.pdf to determine how the superseded data were derived.
 HV1073
 HV1073_MARKER: DB = BENCH MARK DISK
 HV1073_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1073_STAMPING: B 86 1942
 HV1073_MARK LOGO: CGS
 HV1073_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1073+STABILITY: SURFACE MOTION
 HV1073_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1073+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2004
 HV1073
 HV1073  HISTORY     - Date     Condition        Report By
 HV1073  HISTORY     - 1942     MONUMENTED       CGS
 HV1073  HISTORY     - 1966     GOOD             CGS
 HV1073  HISTORY     - 20040915 GOOD             GEOCAC
 HV1073
 HV1073                          STATION DESCRIPTION
 HV1073
 HV1073'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1073'2 MI SE FROM SILESIA.
 HV1073'ALONG HIGHWAY 224 ABOUT 2.0 MILES SOUTHEAST OF THE ROBERT TILCH
 HV1073'STORE AT SILESIA, AT THE INTERSECTION WITH A DIRT ROAD RUNNING
 HV1073'NORTHEAST AND SOUTHWEST FROM THE HIGHWAY, IN THE WEST ANGLE
 HV1073'OF THE INTERSECTION, 30.5 FEET WEST-NORTHWEST OF THE INTERSECTIONS
 HV1073'OF THE CENTER LINES OF THE CROSS ROADS, ACROSS THE HIGHWAY
 HV1073'FROM THE CHAPEL HILL SERVICE STATION, 12.5 FEET NORTH OF THE
 HV1073'CENTER LINE OF A DRIVEWAY TO A HOUSE IN THE WEST ANGLE OF THE
 HV1073'INTERSECTION, 3.2 FEET NORTHWEST OF POWER POLE NUMBER 825524,
 HV1073'A BENCH MARK DISK SET IN THE TOP OF A CONCRETE POST PROJECTING
 HV1073'ABOUT 6 INCHES ABOVE THE GROUND AND LEVEL WITH THE HIGHWAY.
 HV1073
 HV1073                          STATION RECOVERY (1966)
 HV1073
 HV1073'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 HV1073'RECOVERED IN GOOD CONDITION.
 HV1073
 HV1073                          STATION RECOVERY (2004)
 HV1073
 HV1073'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV1073'THE MARK IS FLUSH WITH THE SURFACE AND 3.2 FEET NORTHWEST OF POWER
 HV1073'POLE PEPCO 804322-3313.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2381 ***********************************************************************
 JV2381  DESIGNATION -  B 88
 JV2381  PID         -  JV2381
 JV2381  STATE/COUNTY-  MD/FREDERICK
 JV2381  COUNTRY     -  US
 JV2381  USGS QUAD   -  FREDERICK (2016)
 JV2381
 JV2381                         *CURRENT SURVEY CONTROL
 JV2381  ______________________________________________________________________
 JV2381* NAD 83(1986) POSITION- 39 25 03.     (N) 077 26 47.     (W)   SCALED
 JV2381* NAVD 88 ORTHO HEIGHT -   114.034 (meters)      374.13  (feet) ADJUSTED
 JV2381  ______________________________________________________________________
 JV2381  GEOID HEIGHT    -        -32.783 (meters)                     GEOID18
 JV2381  DYNAMIC HEIGHT  -        113.973 (meters)      373.93  (feet) COMP
 JV2381  MODELED GRAVITY -    980,089.4   (mgal)                       NAVD 88
 JV2381
 JV2381  VERT ORDER      -  SECOND    CLASS 0
 JV2381
 JV2381.The horizontal coordinates were scaled from a map and have
 JV2381.an estimated accuracy of +/- 6 seconds.
 JV2381
 JV2381.The orthometric height was determined by differential leveling and
 JV2381.adjusted by the NATIONAL GEODETIC SURVEY
 JV2381.in June 1991.
 JV2381
 JV2381.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2381.GEOID18 height accuracy estimate available here.
 JV2381
 JV2381.Click photographs - Photos may exist for this station.
 JV2381
 JV2381.The dynamic height is computed by dividing the NAVD 88
 JV2381.geopotential number by the normal gravity value computed on the
 JV2381.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2381.degrees latitude (g = 980.6199 gals.).
 JV2381
 JV2381.The modeled gravity was interpolated from observed gravity values.
 JV2381
 JV2381;                    North         East    Units  Estimated Accuracy
 JV2381;SPC MD       -   194,450.      361,560.      MT  (+/- 180 meters Scaled)
 JV2381
 JV2381_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ894659(NAD 83)
 JV2381
 JV2381                          SUPERSEDED SURVEY CONTROL
 JV2381
 JV2381  NGVD 29 (11/26/84)  114.256  (m)          374.85   (f) ADJUSTED    2 0
 JV2381
 JV2381.Superseded values are not recommended for survey control.
 JV2381
 JV2381.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2381.See file dsdata.pdf to determine how the superseded data were derived.
 JV2381
 JV2381_MARKER: DB = BENCH MARK DISK
 JV2381_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2381_STAMPING: B 88 1942
 JV2381_MARK LOGO: CGS
 JV2381_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2381+STABILITY: SURFACE MOTION
 JV2381
 JV2381  HISTORY     - Date     Condition        Report By
 JV2381  HISTORY     - 1942     MONUMENTED       CGS
 JV2381  HISTORY     - 20031102 MARK NOT FOUND   USPSQD
 JV2381
 JV2381                          STATION DESCRIPTION
 JV2381
 JV2381'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2381'1.4 MI W FROM FREDERICK.
 JV2381'1.4 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE Y-JUNCTION OF
 JV2381'U.S. HIGHWAY 340 AT FREDERICK, FREDERICK COUNTY, NEAR THE
 JV2381'JUNCTION OF A FARM ROAD LEADING SOUTHWEST, 166 FEET NORTHWEST
 JV2381'OF THE CENTER LINE OF THE FARM ROAD, 25.2 FEET SOUTHWEST OF
 JV2381'THE CENTER LINE OF THE HIGHWAY, 82.7 FEET WEST OF A POLE, 52.1
 JV2381'FEET EAST OF ANOTHER POLE, AND 2 FEET WEST OF A WHITE WOODEN
 JV2381'WITNESS POST.  A STANDARD DISK, STAMPED B 88 1942 AND SET IN
 JV2381'THE TOP OF A CONCRETE POST.
 JV2381
 JV2381                          STATION RECOVERY (2003)
 JV2381
 JV2381'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV2381'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2977 ***********************************************************************
 JV2977  DESIGNATION -  B 89
 JV2977  PID         -  JV2977
 JV2977  STATE/COUNTY-  MD/FREDERICK
 JV2977  COUNTRY     -  US
 JV2977  USGS QUAD   -  MIDDLETOWN (2016)
 JV2977
 JV2977                         *CURRENT SURVEY CONTROL
 JV2977  ______________________________________________________________________
 JV2977* NAD 83(1986) POSITION- 39 28 20.     (N) 077 33 21.     (W)   SCALED
 JV2977* NAVD 88 ORTHO HEIGHT -   183.532 (meters)      602.14  (feet) ADJUSTED
 JV2977  ______________________________________________________________________
 JV2977  GEOID HEIGHT    -        -33.155 (meters)                     GEOID18
 JV2977  DYNAMIC HEIGHT  -        183.430 (meters)      601.80  (feet) COMP
 JV2977  MODELED GRAVITY -    980,068.6   (mgal)                       NAVD 88
 JV2977
 JV2977  VERT ORDER      -  SECOND    CLASS 0
 JV2977
 JV2977.The horizontal coordinates were scaled from a map and have
 JV2977.an estimated accuracy of +/- 6 seconds.
 JV2977
 JV2977.The orthometric height was determined by differential leveling and
 JV2977.adjusted by the NATIONAL GEODETIC SURVEY
 JV2977.in June 1991.
 JV2977
 JV2977.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2977.GEOID18 height accuracy estimate available here.
 JV2977
 JV2977.Click photographs - Photos may exist for this station.
 JV2977
 JV2977.The dynamic height is computed by dividing the NAVD 88
 JV2977.geopotential number by the normal gravity value computed on the
 JV2977.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2977.degrees latitude (g = 980.6199 gals.).
 JV2977
 JV2977.The modeled gravity was interpolated from observed gravity values.
 JV2977
 JV2977;                    North         East    Units  Estimated Accuracy
 JV2977;SPC MD       -   200,580.      352,170.      MT  (+/- 180 meters Scaled)
 JV2977
 JV2977_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ801723(NAD 83)
 JV2977
 JV2977                          SUPERSEDED SURVEY CONTROL
 JV2977
 JV2977  NGVD 29 (11/26/84)  183.744  (m)          602.83   (f) ADJUSTED    2 0
 JV2977
 JV2977.Superseded values are not recommended for survey control.
 JV2977
 JV2977.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2977.See file dsdata.pdf to determine how the superseded data were derived.
 JV2977
 JV2977_MARKER: DB = BENCH MARK DISK
 JV2977_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2977_STAMPING: B 89 1942
 JV2977_MARK LOGO: CGS
 JV2977_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2977+STABILITY: SURFACE MOTION
 JV2977
 JV2977  HISTORY     - Date     Condition        Report By
 JV2977  HISTORY     - 1942     MONUMENTED       CGS
 JV2977  HISTORY     - 20130206 MARK NOT FOUND   GEOCAC
 JV2977
 JV2977                          STATION DESCRIPTION
 JV2977
 JV2977'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2977'0.7 MI N FROM MIDDLETOWN.
 JV2977'0.7 MILE NORTH ALONG STATE HIGHWAY 17 FROM THE INTERSECTION OF
 JV2977'U.S. HIGHWAY 40 AT MIDDLETOWN, FREDERICK COUNTY, THENCE 2.2 MILES
 JV2977'NORTHWEST ALONG A DIRT ROAD, AT THE JUNCTION OF A ROAD LEADING
 JV2977'INTO A MEADOW, 18 FEET WEST OF THE CENTER LINE OF THE SIDE ROAD,
 JV2977'17 FEET SOUTH OF THE CENTER LINE OF THE MAIN ROAD, 8 FEET WEST
 JV2977'OF A POWER-TRANSMISSION LINE POLE, 1 FOOT NORTH OF AN EAST-AND-WEST
 JV2977'FENCE, AND NEAR A WHITE WOODEN WITNESS POST.  A STANDARD DISK,
 JV2977'STAMPED B 89 1942 AND SET IN THE TOP OF A CONCRETE POST.
 JV2977
 JV2977                          STATION RECOVERY (2013)
 JV2977
 JV2977'RECOVERY NOTE BY GEOCACHING 2013 (DPB)
 JV2977'COORDINATES PLACE THE MARK IN THE MIDDLE OF A NEWLY PAVED DRIVEWAY.
 JV2977'THE POLE AND FENCE LINE IN THE DESCRIPTION ARE GONE.  PAVING OF THE
 JV2977'MEADOW LANE AND ADDITION OF AN ELECTRICAL BOX HAVE EITHER BURIED OR
 JV2977'DESTROYED THE MARK.  IT IS NOT VISIBLE ON THE SURFACE IN THE AREA OF
 JV2977'MEASUREMENT FROM THE ROAD AND LANE INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0051 ***********************************************************************
 HV0051  DESIGNATION -  B 9
 HV0051  PID         -  HV0051
 HV0051  STATE/COUNTY-  MD/TALBOT
 HV0051  COUNTRY     -  US
 HV0051  USGS QUAD   -  EASTON (2016)
 HV0051
 HV0051                         *CURRENT SURVEY CONTROL
 HV0051  ______________________________________________________________________
 HV0051* NAD 83(1986) POSITION- 38 51 10.     (N) 076 00 52.     (W)   SCALED
 HV0051* NAVD 88 ORTHO HEIGHT -    21.152 (meters)       69.40  (feet) ADJUSTED
 HV0051  ______________________________________________________________________
 HV0051  GEOID HEIGHT    -        -34.599 (meters)                     GEOID18
 HV0051  DYNAMIC HEIGHT  -         21.140 (meters)       69.36  (feet) COMP
 HV0051  MODELED GRAVITY -    980,044.2   (mgal)                       NAVD 88
 HV0051
 HV0051  VERT ORDER      -  SECOND    CLASS 0
 HV0051
 HV0051.The horizontal coordinates were scaled from a map and have
 HV0051.an estimated accuracy of +/- 6 seconds.
 HV0051
 HV0051.The orthometric height was determined by differential leveling and
 HV0051.adjusted by the NATIONAL GEODETIC SURVEY
 HV0051.in June 1991.
 HV0051
 HV0051.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0051.GEOID18 height accuracy estimate available here.
 HV0051
 HV0051.Click photographs - Photos may exist for this station.
 HV0051
 HV0051.The dynamic height is computed by dividing the NAVD 88
 HV0051.geopotential number by the normal gravity value computed on the
 HV0051.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0051.degrees latitude (g = 980.6199 gals.).
 HV0051
 HV0051.The modeled gravity was interpolated from observed gravity values.
 HV0051
 HV0051;                    North         East    Units  Estimated Accuracy
 HV0051;SPC MD       -   132,130.      485,550.      MT  (+/- 180 meters Scaled)
 HV0051
 HV0051_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ119009(NAD 83)
 HV0051
 HV0051                          SUPERSEDED SURVEY CONTROL
 HV0051
 HV0051  NGVD 29 (11/26/84)   21.388  (m)           70.17   (f) ADJUSTED    2 0
 HV0051
 HV0051.Superseded values are not recommended for survey control.
 HV0051
 HV0051.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0051.See file dsdata.pdf to determine how the superseded data were derived.
 HV0051
 HV0051_MARKER: DB = BENCH MARK DISK
 HV0051_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0051_STAMPING: B 9 1935
 HV0051_MARK LOGO: CGS
 HV0051_PROJECTION: PROJECTING 13 CENTIMETERS
 HV0051_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0051+STABILITY: SURFACE MOTION
 HV0051
 HV0051  HISTORY     - Date     Condition        Report By
 HV0051  HISTORY     - 1935     MONUMENTED       CGS
 HV0051  HISTORY     - 1942     GOOD             CGS
 HV0051
 HV0051                          STATION DESCRIPTION
 HV0051
 HV0051'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HV0051'1.9 MI S FROM CORDOVA.
 HV0051'1.9 MILES SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HV0051'AT CORDOVA, TALBOT COUNTY, 700 FEET SOUTHEAST OF A 2-STORY
 HV0051'CONCRETE-BLOCK HOUSE, AT A DIRT-ROAD CROSSING, 42 FEET EAST
 HV0051'OF THE EAST RAIL, 12 FEET EAST OF THE SOUTHWEST CORNER OF A
 HV0051'FIELD, 2 FEET NORTH OF A FENCE LINE, AND ABOUT 2 FEET LOWER
 HV0051'THAN THE TRACK.  A STANDARD DISK, STAMPED B 9 1935 AND SET IN
 HV0051'THE TOP OF A CONCRETE POST PROJECTING 5 INCHES ABOVE GROUND.
 HV0051
 HV0051                          STATION RECOVERY (1942)
 HV0051
 HV0051'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0051'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AO6240 ***********************************************************************
 AO6240  DESIGNATION -  B 9
 AO6240  PID         -  AO6240
 AO6240  STATE/COUNTY-  MD/PRINCE GEORGES
 AO6240  COUNTRY     -  US
 AO6240  USGS QUAD   -  MOUNT VERNON (2019)
 AO6240
 AO6240                         *CURRENT SURVEY CONTROL
 AO6240  ______________________________________________________________________
 AO6240* NAD 83(1986) POSITION- 38 38 23.     (N) 077 02 59.     (W)   SCALED
 AO6240* NAVD 88 ORTHO HEIGHT -    54.81  (+/-2cm)      179.8   (feet) VERTCON3
 AO6240  ______________________________________________________________________
 AO6240  GEOID HEIGHT    -        -32.556 (meters)                     GEOID18
 AO6240  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 AO6240
 AO6240.The horizontal coordinates were scaled from a map and have
 AO6240.an estimated accuracy of +/- 6 seconds.
 AO6240
 AO6240.The NAVD 88 height was computed by applying the VERTCON shift value to
 AO6240.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 AO6240
 AO6240.Significant digits in the geoid height do not necessarily reflect accuracy.
 AO6240.GEOID18 height accuracy estimate available here.
 AO6240
 AO6240.The vertical order pertains to the NGVD 29 superseded value.
 AO6240
 AO6240.Click photographs - Photos may exist for this station.
 AO6240
 AO6240;                    North         East    Units  Estimated Accuracy
 AO6240;SPC MD       -   108,010.      395,670.      MT  (+/- 180 meters Scaled)
 AO6240
 AO6240_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH216787(NAD 83)
 AO6240
 AO6240                          SUPERSEDED SURVEY CONTROL
 AO6240
 AO6240  NGVD 29 (05/01/89)   55.049  (m)          180.61   (f) ADJUSTED    2 0
 AO6240  NGVD 29 (11/26/84)   55.091  (m)          180.74   (f) SUPERSEDED  2 0
 AO6240
 AO6240.Superseded values are not recommended for survey control.
 AO6240
 AO6240.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AO6240.See file dsdata.pdf to determine how the superseded data were derived.
 AO6240
 AO6240_MARKER: Q = CHISELED SQUARE
 AO6240_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 AO6240_SP_SET: HEADWALL
 AO6240_MARK LOGO: NONE
 AO6240_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AO6240+STABILITY: SURFACE MOTION
 AO6240
 AO6240  HISTORY     - Date     Condition        Report By
 AO6240  HISTORY     - UNK      MONUMENTED       USACE
 AO6240  HISTORY     - 1966     GOOD             CGS
 AO6240
 AO6240                          STATION DESCRIPTION
 AO6240
 AO6240'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 AO6240'0.8 MI NE FROM BRYAN ROAD.
 AO6240'0.8 MILES NORTHEAST ALONG STATE HIGHWAY 210 FROM BRYAN ROAD
 AO6240'INTERSECTION.  THE B.M. IS A SQUARE CUT ON NORTH END CONCRETE
 AO6240'HEADWALL AND IT IS 15 FEET WEST OF CENTERLINE OF HIGHWAY NO.
 AO6240'210.  THE B.M. IS 40 FEET NORTH OF ROAD INTERSECTION AND THE
 AO6240'GRADED ROAD LEADS SOUTHEAST.  STATION IS LEVEL WITH NORTHEAST,
 AO6240'SOUTHWEST ROAD AND 9 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1880 ***********************************************************************
 JV1880  DESIGNATION -  B 90 RESET
 JV1880  PID         -  JV1880
 JV1880  STATE/COUNTY-  MD/FREDERICK
 JV1880  COUNTRY     -  US
 JV1880  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV1880
 JV1880                         *CURRENT SURVEY CONTROL
 JV1880  ______________________________________________________________________
 JV1880* NAD 83(1986) POSITION- 39 30 22.     (N) 077 24 17.     (W)   SCALED
 JV1880* NAVD 88 ORTHO HEIGHT -   121.41  (meters)      398.3   (feet) RESET
 JV1880  ______________________________________________________________________
 JV1880  GEOID HEIGHT    -        -32.912 (meters)                     GEOID18
 JV1880  VERT ORDER      -  THIRD
 JV1880
 JV1880.The horizontal coordinates were scaled from a map and have
 JV1880.an estimated accuracy of +/- 6 seconds.
 JV1880
 JV1880.The orthometric height was computed from unverified reset data.
 JV1880
 JV1880.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1880.GEOID18 height accuracy estimate available here.
 JV1880
 JV1880.Click photographs - Photos may exist for this station.
 JV1880
 JV1880;                    North         East    Units  Estimated Accuracy
 JV1880;SPC MD       -   204,270.      365,190.      MT  (+/- 180 meters Scaled)
 JV1880
 JV1880_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ932757(NAD 83)
 JV1880
 JV1880                          SUPERSEDED SURVEY CONTROL
 JV1880
 JV1880  NGVD 29 (??/??/??)  121.63   (m)          399.0    (f) RESET       3  
 JV1880
 JV1880.Superseded values are not recommended for survey control.
 JV1880
 JV1880.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1880.See file dsdata.pdf to determine how the superseded data were derived.
 JV1880
 JV1880_MARKER: DB = BENCH MARK DISK
 JV1880_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1880_STAMPING: B 90 RESET 1962
 JV1880_MARK LOGO: CGS
 JV1880_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1880+STABILITY: SURFACE MOTION
 JV1880
 JV1880  HISTORY     - Date     Condition        Report By
 JV1880  HISTORY     - 1962     MONUMENTED       MDSRC
 JV1880  HISTORY     - 19970811 MARK NOT FOUND   USPSQD
 JV1880  HISTORY     - 20011206 MARK NOT FOUND   MDSHA
 JV1880
 JV1880                          STATION DESCRIPTION
 JV1880
 JV1880'DESCRIBED BY MD STATE ROADS COMM 1962
 JV1880'6 MI N FROM HARMONY GROVE.
 JV1880'LOCATED 4.0 MILES NORTH ALONG U.S. ROUTE 15 FROM THE RAILROAD
 JV1880'CROSSING AT HARMONY GROVE, 2.0 MILES SOUTH OF LEWISTOWN, AT THE
 JV1880'JUNCTION OF U.S. ROUTE 15 AND BARTGIS ROAD.  IT IS 25.0 FEET
 JV1880'WEST OF THE CENTERLINE OF U.S. ROUTE 15, 87.0 FEET SOUTH OF THE
 JV1880'CENTERLINE OF BARTGIS ROAD, 55.0 FEET SOUTH OF BARTGIS ROAD SIGN,
 JV1880'3.0 FEET NORTH OF A POWER POLE, AND SET IN A CONCRETE POST PROJECT
 JV1880'3 INCHES ABOVE THE GROUND.
 JV1880
 JV1880                          STATION RECOVERY (1997)
 JV1880
 JV1880'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV1880'MARK NOT FOUND.
 JV1880
 JV1880                          STATION RECOVERY (2001)
 JV1880
 JV1880'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1880'THE STATION WAS SEARCHED FOR AND NOT RECOVERED. WHAT APPEARS TO BE THE
 JV1880'REMAINS OF THE CONCRETE MONUMENT WAS RECOVERED WITH THE DISK REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0779 ***********************************************************************
 JV0779  DESIGNATION -  B 92
 JV0779  PID         -  JV0779
 JV0779  STATE/COUNTY-  MD/BALTIMORE
 JV0779  COUNTRY     -  US
 JV0779  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0779
 JV0779                         *CURRENT SURVEY CONTROL
 JV0779  ______________________________________________________________________
 JV0779* NAD 83(1986) POSITION- 39 22 28.     (N) 076 44 26.     (W)   SCALED
 JV0779* NAVD 88 ORTHO HEIGHT -   132.274 (meters)      433.97  (feet) ADJUSTED
 JV0779  ______________________________________________________________________
 JV0779  GEOID HEIGHT    -        -32.252 (meters)                     GEOID18
 JV0779  DYNAMIC HEIGHT  -        132.205 (meters)      433.74  (feet) COMP
 JV0779  MODELED GRAVITY -    980,100.6   (mgal)                       NAVD 88
 JV0779
 JV0779  VERT ORDER      -  SECOND    CLASS 0
 JV0779
 JV0779.The horizontal coordinates were scaled from a map and have
 JV0779.an estimated accuracy of +/- 6 seconds.
 JV0779
 JV0779.The orthometric height was determined by differential leveling and
 JV0779.adjusted by the NATIONAL GEODETIC SURVEY
 JV0779.in June 1991.
 JV0779
 JV0779.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0779.GEOID18 height accuracy estimate available here.
 JV0779
 JV0779.Click photographs - Photos may exist for this station.
 JV0779
 JV0779.The dynamic height is computed by dividing the NAVD 88
 JV0779.geopotential number by the normal gravity value computed on the
 JV0779.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0779.degrees latitude (g = 980.6199 gals.).
 JV0779
 JV0779.The modeled gravity was interpolated from observed gravity values.
 JV0779
 JV0779;                    North         East    Units  Estimated Accuracy
 JV0779;SPC MD       -   189,610.      422,360.      MT  (+/- 180 meters Scaled)
 JV0779
 JV0779_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ500597(NAD 83)
 JV0779
 JV0779                          SUPERSEDED SURVEY CONTROL
 JV0779
 JV0779  NGVD 29 (11/26/84)  132.482  (m)          434.65   (f) ADJUSTED    2 0
 JV0779
 JV0779.Superseded values are not recommended for survey control.
 JV0779
 JV0779.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0779.See file dsdata.pdf to determine how the superseded data were derived.
 JV0779
 JV0779_MARKER: DB = BENCH MARK DISK
 JV0779_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0779_SP_SET: ROCK WALL
 JV0779_STAMPING: B 92 1942
 JV0779_MARK LOGO: CGS
 JV0779_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0779
 JV0779  HISTORY     - Date     Condition        Report By
 JV0779  HISTORY     - 1942     MONUMENTED       CGS
 JV0779  HISTORY     - 1967     GOOD             MDSRC
 JV0779  HISTORY     - 20100302 MARK NOT FOUND   JARICE
 JV0779  HISTORY     - 20100317 MARK NOT FOUND   MD-005
 JV0779
 JV0779                          STATION DESCRIPTION
 JV0779
 JV0779'DESCRIBED BY MD STATE ROADS COMM 1967
 JV0779'0.7 MI SW FROM PIKESVILLE.
 JV0779'0.7 MILE SOUTHWEST ALONG STATE HIGHWAY 125 FROM THE JUNCTION OF
 JV0779'U.S. HIGHWAY 140 AT PIKESVILLE, BALTIMORE COUNTY, AT ROSLYA,
 JV0779'ABOUT 300 FEET SOUTHWEST OF THE SITE OF THE OLD PIKESVILLE
 JV0779'STATION ON THE WESTERN MARYLAND RAILWAY, AT THE ENTRANCE TO
 JV0779'C.W. THOMPSONS PRIVATE DRIVEWAY, 44 FEET NORTH OF THE CENTER
 JV0779'LINE OF THE HIGHWAY, 14 FEET EAST OF THE CENTER LINE OF THE
 JV0779'DRIVEWAY, AND IN THE NORTHWEST SIDE OF A ROCK WALL.  A STANDARD
 JV0779'DISK, STAMPED B 92 1942.
 JV0779
 JV0779                          STATION RECOVERY (2010)
 JV0779
 JV0779'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV0779'MARK NOT FOUND.
 JV0779
 JV0779                          STATION RECOVERY (2010)
 JV0779
 JV0779'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2010 (ATA)
 JV0779'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1878 ***********************************************************************
 JV1878  DESIGNATION -  B 93
 JV1878  PID         -  JV1878
 JV1878  STATE/COUNTY-  MD/FREDERICK
 JV1878  COUNTRY     -  US
 JV1878  USGS QUAD   -  UNION BRIDGE (2016)
 JV1878
 JV1878                         *CURRENT SURVEY CONTROL
 JV1878  ______________________________________________________________________
 JV1878* NAD 83(1986) POSITION- 39 30 00.     (N) 077 10 35.     (W)   SCALED
 JV1878* NAVD 88 ORTHO HEIGHT -   180.076 (meters)      590.80  (feet) ADJUSTED
 JV1878  ______________________________________________________________________
 JV1878  GEOID HEIGHT    -        -32.358 (meters)                     GEOID18
 JV1878  DYNAMIC HEIGHT  -        179.981 (meters)      590.49  (feet) COMP
 JV1878  MODELED GRAVITY -    980,100.1   (mgal)                       NAVD 88
 JV1878
 JV1878  VERT ORDER      -  SECOND    CLASS 0
 JV1878
 JV1878.The horizontal coordinates were scaled from a map and have
 JV1878.an estimated accuracy of +/- 6 seconds.
 JV1878
 JV1878.The orthometric height was determined by differential leveling and
 JV1878.adjusted by the NATIONAL GEODETIC SURVEY
 JV1878.in June 1991.
 JV1878
 JV1878.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1878.GEOID18 height accuracy estimate available here.
 JV1878
 JV1878.Click photographs - Photos may exist for this station.
 JV1878
 JV1878.The dynamic height is computed by dividing the NAVD 88
 JV1878.geopotential number by the normal gravity value computed on the
 JV1878.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1878.degrees latitude (g = 980.6199 gals.).
 JV1878
 JV1878.The modeled gravity was interpolated from observed gravity values.
 JV1878
 JV1878;                    North         East    Units  Estimated Accuracy
 JV1878;SPC MD       -   203,530.      384,830.      MT  (+/- 180 meters Scaled)
 JV1878
 JV1878_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ128745(NAD 83)
 JV1878
 JV1878                          SUPERSEDED SURVEY CONTROL
 JV1878
 JV1878  NGVD 29 (11/26/84)  180.281  (m)          591.47   (f) ADJUSTED    2 0
 JV1878
 JV1878.Superseded values are not recommended for survey control.
 JV1878
 JV1878.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1878.See file dsdata.pdf to determine how the superseded data were derived.
 JV1878
 JV1878_MARKER: DB = BENCH MARK DISK
 JV1878_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1878_STAMPING: B 93 1942
 JV1878_MARK LOGO: CGS
 JV1878_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1878+STABILITY: SURFACE MOTION
 JV1878
 JV1878  HISTORY     - Date     Condition        Report By
 JV1878  HISTORY     - 1942     MONUMENTED       CGS
 JV1878
 JV1878                          STATION DESCRIPTION
 JV1878
 JV1878'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1878'1.9 MI N FROM UNIONVILLE.
 JV1878'1.9 MILES NORTH ALONG THE UNION BRIDGE ROAD FROM THE COMMUNITY
 JV1878'HALL AT UNIONVILLE, FREDERICK COUNTY, 28.4 FEET EAST OF THE
 JV1878'CENTER LINE OF THE HIGHWAY, 14 FEET NORTH OF A BRACE POLE, 7
 JV1878'FEET SOUTH OF AN 8-INCH OAK TREE, 2 FEET WEST OF A NORTH-AND-SOUTH
 JV1878'FENCE, AND NEAR A WHITE WOODEN WITNESS POST.  A STANDARD DISK,
 JV1878'STAMPED B 93 1942 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2845 ***********************************************************************
 JV2845  DESIGNATION -  B 94
 JV2845  PID         -  JV2845
 JV2845  STATE/COUNTY-  MD/MONTGOMERY
 JV2845  COUNTRY     -  US
 JV2845  USGS QUAD   -  ROCKVILLE (2016)
 JV2845
 JV2845                         *CURRENT SURVEY CONTROL
 JV2845  ______________________________________________________________________
 JV2845* NAD 83(1986) POSITION- 39 03 59.     (N) 077 10 27.     (W)   SCALED
 JV2845* NAVD 88 ORTHO HEIGHT -   121.746 (meters)      399.43  (feet) ADJUSTED
 JV2845  ______________________________________________________________________
 JV2845  GEOID HEIGHT    -        -31.712 (meters)                     GEOID18
 JV2845  DYNAMIC HEIGHT  -        121.682 (meters)      399.22  (feet) COMP
 JV2845  MODELED GRAVITY -    980,104.7   (mgal)                       NAVD 88
 JV2845
 JV2845  VERT ORDER      -  FIRST     CLASS II
 JV2845
 JV2845.The horizontal coordinates were scaled from a map and have
 JV2845.an estimated accuracy of +/- 6 seconds.
 JV2845
 JV2845.The orthometric height was determined by differential leveling and
 JV2845.adjusted by the NATIONAL GEODETIC SURVEY
 JV2845.in June 1991.
 JV2845
 JV2845.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2845.GEOID18 height accuracy estimate available here.
 JV2845
 JV2845.Click photographs - Photos may exist for this station.
 JV2845
 JV2845.The dynamic height is computed by dividing the NAVD 88
 JV2845.geopotential number by the normal gravity value computed on the
 JV2845.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2845.degrees latitude (g = 980.6199 gals.).
 JV2845
 JV2845.The modeled gravity was interpolated from observed gravity values.
 JV2845
 JV2845;                    North         East    Units  Estimated Accuracy
 JV2845;SPC MD       -   155,390.      384,930.      MT  (+/- 180 meters Scaled)
 JV2845
 JV2845_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ119263(NAD 83)
 JV2845
 JV2845                          SUPERSEDED SURVEY CONTROL
 JV2845
 JV2845  NGVD 29 (11/26/84)  121.968  (m)          400.16   (f) ADJUSTED    1 2
 JV2845
 JV2845.Superseded values are not recommended for survey control.
 JV2845
 JV2845.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2845.See file dsdata.pdf to determine how the superseded data were derived.
 JV2845
 JV2845_MARKER: DB = BENCH MARK DISK
 JV2845_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2845_SP_SET: CULVERT
 JV2845_STAMPING: B 94 1944
 JV2845_MARK LOGO: CGS
 JV2845_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2845
 JV2845  HISTORY     - Date     Condition        Report By
 JV2845  HISTORY     - 1944     MONUMENTED       CGS
 JV2845  HISTORY     - 1965     GOOD             WSSC
 JV2845  HISTORY     - 19950428 MARK NOT FOUND   USPSQD
 JV2845  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV2845
 JV2845                          STATION DESCRIPTION
 JV2845
 JV2845'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2845'1.6 MI SW FROM ROCKVILLE.
 JV2845'ABOUT 1.6 MILES SOUTHWEST ALONG STATE HIGHWAY 189 FROM ITS
 JV2845'JUNCTION WITH STATE HIGHWAY 28 AT ROCKVILLE, MONTGOMERY COUNTY,
 JV2845'18 FEET NORTH OF POWER-TRANSMISSION LINE POLE PEP 612517, AT A
 JV2845'CONCRETE CULVERT, IN THE TOP OF THE SOUTHEAST HEAD WALL, 15 FEET
 JV2845'SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 1-1/2
 JV2845'FEET LOWER THAN THE HIGHWAY.
 JV2845
 JV2845                          STATION RECOVERY (1995)
 JV2845
 JV2845'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2845'MARK NOT FOUND.
 JV2845
 JV2845                          STATION RECOVERY (2000)
 JV2845
 JV2845'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2845'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0125 ***********************************************************************
 JV0125  DESIGNATION -  B 96
 JV0125  PID         -  JV0125
 JV0125  STATE/COUNTY-  MD/HARFORD
 JV0125  COUNTRY     -  US
 JV0125  USGS QUAD   -  ABERDEEN (2016)
 JV0125
 JV0125                         *CURRENT SURVEY CONTROL
 JV0125  ______________________________________________________________________
 JV0125* NAD 83(1986) POSITION- 39 32 28.     (N) 076 10 20.     (W)   SCALED
 JV0125* NAVD 88 ORTHO HEIGHT -    66.986 (meters)      219.77  (feet) ADJUSTED
 JV0125  ______________________________________________________________________
 JV0125  GEOID HEIGHT    -        -33.029 (meters)                     GEOID18
 JV0125  DYNAMIC HEIGHT  -         66.952 (meters)      219.66  (feet) COMP
 JV0125  MODELED GRAVITY -    980,129.4   (mgal)                       NAVD 88
 JV0125
 JV0125  VERT ORDER      -  SECOND    CLASS 0
 JV0125
 JV0125.The horizontal coordinates were scaled from a map and have
 JV0125.an estimated accuracy of +/- 6 seconds.
 JV0125
 JV0125.The orthometric height was determined by differential leveling and
 JV0125.adjusted by the NATIONAL GEODETIC SURVEY
 JV0125.in June 1991.
 JV0125
 JV0125.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0125.GEOID18 height accuracy estimate available here.
 JV0125
 JV0125.Click photographs - Photos may exist for this station.
 JV0125
 JV0125.The dynamic height is computed by dividing the NAVD 88
 JV0125.geopotential number by the normal gravity value computed on the
 JV0125.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0125.degrees latitude (g = 980.6199 gals.).
 JV0125
 JV0125.The modeled gravity was interpolated from observed gravity values.
 JV0125
 JV0125;                    North         East    Units  Estimated Accuracy
 JV0125;SPC MD       -   208,400.      471,160.      MT  (+/- 180 meters Scaled)
 JV0125
 JV0125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ992774(NAD 83)
 JV0125
 JV0125                          SUPERSEDED SURVEY CONTROL
 JV0125
 JV0125  NGVD 29 (11/26/84)   67.246  (m)          220.62   (f) ADJUSTED    2 0
 JV0125
 JV0125.Superseded values are not recommended for survey control.
 JV0125
 JV0125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0125.See file dsdata.pdf to determine how the superseded data were derived.
 JV0125
 JV0125_MARKER: DB = BENCH MARK DISK
 JV0125_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0125_STAMPING: B 96 1959
 JV0125_MARK LOGO: CGS
 JV0125_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0125+STABILITY: SURFACE MOTION
 JV0125
 JV0125  HISTORY     - Date     Condition        Report By
 JV0125  HISTORY     - 1959     MONUMENTED       CGS
 JV0125
 JV0125                          STATION DESCRIPTION
 JV0125
 JV0125'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0125'4.2 MI NE FROM ABERDEEN.
 JV0125'ABOUT 2.3 MILES NORTHWEST ALONG STATE HIGHWAY 22 FROM THE POST
 JV0125'OFFICE AT ABERDEEN, THENCE 1.4 MILES EAST ALONG GILBERT ROAD,
 JV0125'THENCE 0.5 MILE SOUTHEAST ALONG OLD ROBIN HOOD ROAD, 15 1/2
 JV0125'FEET EAST OF THE CENTER LINE OF THE ROAD, 10 FEET SOUTH OF AN
 JV0125'8-INCH OAK TREE WHICH IS ALSO USED AS A FENCE CORNER POST, 120
 JV0125'FEET SOUTH OF A LONG 12-INCH CEDAR TREE, 1 1/2 FEET EAST OF A
 JV0125'METAL WITNESS POST, 2 FEET ABOVE THE LEVEL OF THE ROAD AND
 JV0125'SET IN THE TOP OF A CONCRETE POST PROJECTING 5 INCHES ABOVE THE
 JV0125'LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1249 ***********************************************************************
 JV1249  DESIGNATION -  B 97
 JV1249  PID         -  JV1249
 JV1249  STATE/COUNTY-  MD/BALTIMORE
 JV1249  COUNTRY     -  US
 JV1249  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1249
 JV1249                         *CURRENT SURVEY CONTROL
 JV1249  ______________________________________________________________________
 JV1249* NAD 83(1986) POSITION- 39 25 10.     (N) 076 39 08.     (W)   SCALED
 JV1249* NAVD 88 ORTHO HEIGHT -   103.144 (meters)      338.40  (feet) ADJUSTED
 JV1249  ______________________________________________________________________
 JV1249  GEOID HEIGHT    -        -32.441 (meters)                     GEOID18
 JV1249  DYNAMIC HEIGHT  -        103.090 (meters)      338.22  (feet) COMP
 JV1249  MODELED GRAVITY -    980,101.8   (mgal)                       NAVD 88
 JV1249
 JV1249  VERT ORDER      -  SECOND    CLASS 0
 JV1249
 JV1249.The horizontal coordinates were scaled from a map and have
 JV1249.an estimated accuracy of +/- 6 seconds.
 JV1249
 JV1249.The orthometric height was determined by differential leveling and
 JV1249.adjusted by the NATIONAL GEODETIC SURVEY
 JV1249.in June 1991.
 JV1249
 JV1249.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1249.GEOID18 height accuracy estimate available here.
 JV1249
 JV1249.Click photographs - Photos may exist for this station.
 JV1249
 JV1249.The dynamic height is computed by dividing the NAVD 88
 JV1249.geopotential number by the normal gravity value computed on the
 JV1249.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1249.degrees latitude (g = 980.6199 gals.).
 JV1249
 JV1249.The modeled gravity was interpolated from observed gravity values.
 JV1249
 JV1249;                    North         East    Units  Estimated Accuracy
 JV1249;SPC MD       -   194,630.      429,950.      MT  (+/- 180 meters Scaled)
 JV1249
 JV1249_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ577646(NAD 83)
 JV1249
 JV1249                          SUPERSEDED SURVEY CONTROL
 JV1249
 JV1249  NGVD 29 (11/26/84)  103.364  (m)          339.12   (f) ADJUSTED    2 0
 JV1249
 JV1249.Superseded values are not recommended for survey control.
 JV1249
 JV1249.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1249.See file dsdata.pdf to determine how the superseded data were derived.
 JV1249
 JV1249_MARKER: DB = BENCH MARK DISK
 JV1249_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1249_STAMPING: B 97 1959
 JV1249_MARK LOGO: CGS
 JV1249_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1249+STABILITY: SURFACE MOTION
 JV1249
 JV1249  HISTORY     - Date     Condition        Report By
 JV1249  HISTORY     - 1959     MONUMENTED       CGS
 JV1249  HISTORY     - 19991129 MARK NOT FOUND   MDSHA
 JV1249
 JV1249                          STATION DESCRIPTION
 JV1249
 JV1249'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1249'0.8 MI SW FROM LUTHERVILLE.
 JV1249'0.75 MILE SOUTHWEST ALONG THE BALTIMORE BELTWAY FROM ITS
 JV1249'INTERSECTION WITH U.S. HIGHWAY 111 AT LUTHERVILLE, ABOUT 1.0
 JV1249'MILE NORTHEAST OF THE INTERSECTION OF THE BELTWAY AND OLD COURT
 JV1249'ROAD, 85.5 FEET SOUTH-SOUTHEAST OF THE CENTER LINE OF THE EAST
 JV1249'BOUND LANE, 63 FEET SOUTH-SOUTHEAST OF THE SOUTHWEST END OF
 JV1249'A STEEL GUARD RAIL, 2 FEET NORTHWEST OF A FENCE LINE, 2 FEET
 JV1249'SOUTHWEST OF A METAL WITNESS POST, 3 FEET ABOVE THE LEVEL OF
 JV1249'THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 JV1249'6 INCHES ABOVE THE LEVEL OF THE GROUND.
 JV1249
 JV1249                          STATION RECOVERY (1999)
 JV1249
 JV1249'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999
 JV1249'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0205 ***********************************************************************
 JV0205  DESIGNATION -  B 98 RESET
 JV0205  PID         -  JV0205
 JV0205  STATE/COUNTY-  MD/HARFORD
 JV0205  COUNTRY     -  US
 JV0205  USGS QUAD   -  BEL AIR (2016)
 JV0205
 JV0205                         *CURRENT SURVEY CONTROL
 JV0205  ______________________________________________________________________
 JV0205* NAD 83(1986) POSITION- 39 32 18.66   (N) 076 21 09.66   (W)   HD_HELD1
 JV0205* NAVD 88 ORTHO HEIGHT -   116.453 (meters)      382.06  (feet) ADJUSTED
 JV0205  ______________________________________________________________________
 JV0205  GEOID HEIGHT    -        -32.760 (meters)                     GEOID18
 JV0205  DYNAMIC HEIGHT  -        116.394 (meters)      381.87  (feet) COMP
 JV0205  MODELED GRAVITY -    980,119.7   (mgal)                       NAVD 88
 JV0205
 JV0205  VERT ORDER      -  FIRST     CLASS II
 JV0205
 JV0205.The horizontal coordinates were determined by differentially corrected
 JV0205.hand held GPS observations or other comparable positioning techniques
 JV0205.and have an estimated accuracy of +/- 3 meters.
 JV0205
 JV0205.The orthometric height was determined by differential leveling and
 JV0205.adjusted by the NATIONAL GEODETIC SURVEY
 JV0205.in June 1991.
 JV0205
 JV0205.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0205.GEOID18 height accuracy estimate available here.
 JV0205
 JV0205.Click photographs - Photos may exist for this station.
 JV0205
 JV0205.The dynamic height is computed by dividing the NAVD 88
 JV0205.geopotential number by the normal gravity value computed on the
 JV0205.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0205.degrees latitude (g = 980.6199 gals.).
 JV0205
 JV0205.The modeled gravity was interpolated from observed gravity values.
 JV0205
 JV0205;                    North         East    Units  Estimated Accuracy
 JV0205;SPC MD       -   207,988.6     455,647.6     MT  (+/- 3 meters HH1 GPS) 
 JV0205
 JV0205_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8375977412(NAD 83)
 JV0205
 JV0205                          SUPERSEDED SURVEY CONTROL
 JV0205
 JV0205  NGVD 29 (??/??/??)  117.12   (m)          384.3    (f) RESET       3  
 JV0205
 JV0205.Superseded values are not recommended for survey control.
 JV0205
 JV0205.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0205.See file dsdata.pdf to determine how the superseded data were derived.
 JV0205
 JV0205_MARKER: DB = BENCH MARK DISK
 JV0205_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV0205_SP_SET: FOUNDATION
 JV0205_STAMPING: B 98 RESET 1963
 JV0205_MARK LOGO: CGS
 JV0205_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0205+STABILITY: SURFACE MOTION
 JV0205_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0205+SATELLITE: SATELLITE OBSERVATIONS - February 13, 2008
 JV0205
 JV0205  HISTORY     - Date     Condition        Report By
 JV0205  HISTORY     - 1963     MONUMENTED       CGS
 JV0205  HISTORY     - 1987     GOOD             USPSQD
 JV0205  HISTORY     - 19891011 GOOD             NGS
 JV0205  HISTORY     - 20011210 GOOD             NGS
 JV0205  HISTORY     - 20080213 GOOD             GEOCAC
 JV0205
 JV0205                          STATION DESCRIPTION
 JV0205
 JV0205'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 JV0205'AT BEL AIR.
 JV0205'AT BEL AIR, ON THE GROUNDS OF THE U.S. POST OFFICE AT THE NORTHEAST
 JV0205'CORNER OF N. MAIN AND GORDON STREETS, SET FLUSH IN TOP OF CONCRETE
 JV0205'WALL OF AREAWAY COVERED WITH AN IRON GRATE, 4.8 FEET SOUTHWEST OF
 JV0205'FACE OF POST OFFICE WALL, 19.8 FEET NORTH OF FLAGPOLE, AND 9.1
 JV0205'FEET EAST OF ENTRANCE LIGHT ON EAST END OF BOTTOM STEP LEADING
 JV0205'TO POST OFFICE.  MARK IS ABOUT 3 INCHES ABOVE SURFACE OF GROUND.
 JV0205
 JV0205                          STATION RECOVERY (1987)
 JV0205
 JV0205'RECOVERY NOTE BY US POWER SQUADRON 1987 (RB)
 JV0205'RECOVERED IN GOOD CONDITION.
 JV0205
 JV0205                          STATION RECOVERY (1989)
 JV0205
 JV0205'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0205'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  IN BEL AIR,
 JV0205'AT THE INTERSECTION OF MAIN AND GORDON STREETS, IN THE SOUTHWEST
 JV0205'FOUNDATION OF A HANDICAP RAMP LEADING TO THE ABANDONED POST OFFICE,
 JV0205'52.0 M (170.6 FT) SOUTHEAST OF THE CENTER OF GORDON STREET, 16.1 M
 JV0205'(52.8 FT) NORTHEAST OF THE CENTER OF MAIN STREET, 3.3 M (10.8 FT)
 JV0205'SOUTHEAST OF THE SOUTHEAST ENTRANCE, 1.5 M (4.9 FT) SOUTHWEST OF THE
 JV0205'SOUTHWEST FACE OF THE BUILDING, 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE
 JV0205'STREETS, AND 0.1 M (0.3 FT) ABOVE THE GROUND SURFACE.  NOTE--ACCESS
 JV0205'TO THE MARK IS THROUGH A HOLE IN THE SOUTHWEST RAMP WALL.
 JV0205
 JV0205                          STATION RECOVERY (2001)
 JV0205
 JV0205'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV0205'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV0205
 JV0205                          STATION RECOVERY (2008)
 JV0205
 JV0205'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV0205'AS DESCRIBED EXCEPT THAT THE BUILDING NOW HOUSES THE BEL AIR
 JV0205'HISTORICAL SOCIETY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0216 ***********************************************************************
 JV0216  DESIGNATION -  B 99
 JV0216  PID         -  JV0216
 JV0216  STATE/COUNTY-  MD/HARFORD
 JV0216  COUNTRY     -  US
 JV0216  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0216
 JV0216                         *CURRENT SURVEY CONTROL
 JV0216  ______________________________________________________________________
 JV0216* NAD 83(1986) POSITION- 39 34 58.     (N) 076 25 40.     (W)   SCALED
 JV0216* NAVD 88 ORTHO HEIGHT -   180.761 (meters)      593.05  (feet) ADJUSTED
 JV0216  ______________________________________________________________________
 JV0216  GEOID HEIGHT    -        -32.608 (meters)                     GEOID18
 JV0216  DYNAMIC HEIGHT  -        180.668 (meters)      592.74  (feet) COMP
 JV0216  MODELED GRAVITY -    980,108.3   (mgal)                       NAVD 88
 JV0216
 JV0216  VERT ORDER      -  SECOND    CLASS 0
 JV0216
 JV0216.The horizontal coordinates were scaled from a map and have
 JV0216.an estimated accuracy of +/- 6 seconds.
 JV0216
 JV0216.The orthometric height was determined by differential leveling and
 JV0216.adjusted by the NATIONAL GEODETIC SURVEY
 JV0216.in June 1991.
 JV0216
 JV0216.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0216.GEOID18 height accuracy estimate available here.
 JV0216
 JV0216.Click photographs - Photos may exist for this station.
 JV0216
 JV0216.The dynamic height is computed by dividing the NAVD 88
 JV0216.geopotential number by the normal gravity value computed on the
 JV0216.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0216.degrees latitude (g = 980.6199 gals.).
 JV0216
 JV0216.The modeled gravity was interpolated from observed gravity values.
 JV0216
 JV0216;                    North         East    Units  Estimated Accuracy
 JV0216;SPC MD       -   212,860.      449,160.      MT  (+/- 180 meters Scaled)
 JV0216
 JV0216_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ773824(NAD 83)
 JV0216
 JV0216                          SUPERSEDED SURVEY CONTROL
 JV0216
 JV0216  NGVD 29 (11/26/84)  181.003  (m)          593.84   (f) ADJUSTED    2 0
 JV0216
 JV0216.Superseded values are not recommended for survey control.
 JV0216
 JV0216.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0216.See file dsdata.pdf to determine how the superseded data were derived.
 JV0216
 JV0216_MARKER: DB = BENCH MARK DISK
 JV0216_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0216_STAMPING: B 99 1960
 JV0216_MARK LOGO: CGS
 JV0216_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0216+STABILITY: SURFACE MOTION
 JV0216
 JV0216  HISTORY     - Date     Condition        Report By
 JV0216  HISTORY     - 1960     MONUMENTED       CGS
 JV0216
 JV0216                          STATION DESCRIPTION
 JV0216
 JV0216'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0216'2.7 MI W FROM FOREST HILL.
 JV0216'ABOUT 2.7 MILES WEST ALONG STATE HIGHWAY 23 FROM THE STATE BANK
 JV0216'AT FOREST HILL, ABOUT 0.2 MILE SOUTHEAST OF THE JUNCTION OF
 JV0216'PHILLIPS MILL ROAD LEADING SOUTHWEST, ON THE OUTSIDE OF A CURVE WITH
 JV0216'TANGENTS EXTENDING SOUTHEAST AND NORTH, 23 FEET WEST OF THE
 JV0216'CENTER LINE OF THE HIGHWAY, 93 FEET SOUTH OF A LONE 22-INCH OAK
 JV0216'TREE, 7 1/2 FEET WEST OF POWER LINE POLE 85689, 2 FEET NORTHEAST
 JV0216'OF POWER LINE POLE GUY CABLE, 86 FEET WEST-NORTHWEST OF AND
 JV0216'ACROSS THE HIGHWAY FROM TELEPHONE CABLE POLE 233, 2 FEET SOUTH OF
 JV0216'A STEEL WITNESS POST, 3 FEET ABOVE THE LEVEL OF THE HIGHWAY, AND
 JV0216'SET IN TOP OF A CONCRETE POST PROJECTING 3 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7179 ***********************************************************************
 HV7179  DESIGNATION -  B BETA
 HV7179  PID         -  HV7179
 HV7179  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7179  COUNTRY     -  US
 HV7179  USGS QUAD   -  DEALE (2016)
 HV7179
 HV7179                         *CURRENT SURVEY CONTROL
 HV7179  ______________________________________________________________________
 HV7179* NAD 83(1991) POSITION- 38 51 06.98548(N) 076 30 55.59466(W)   ADJUSTED
 HV7179  ______________________________________________________________________
 HV7179  GEOID HEIGHT    -        -33.490 (meters)                     GEOID18
 HV7179  LAPLACE CORR    -         -3.47  (seconds)                    DEFLEC18
 HV7179  HORZ ORDER      -  THIRD
 HV7179
 HV7179.The horizontal coordinates were established by classical geodetic methods
 HV7179.and adjusted by the National Geodetic Survey in January 1992.
 HV7179
 HV7179.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7179.GEOID18 height accuracy estimate available here.
 HV7179
 HV7179.Click photographs - Photos may exist for this station.
 HV7179
 HV7179.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7179
 HV7179. The following values were computed from the NAD 83(1991) position.
 HV7179
 HV7179;                    North         East     Units Scale Factor Converg.
 HV7179;SPC MD       -   131,681.952   442,060.471   MT  0.99994993   +0 18 14.8
 HV7179;SPC MD       -   432,026.54  1,450,326.73   sFT  0.99994993   +0 18 14.8
 HV7179;UTM  18      - 4,301,437.537   368,498.789   MT  0.99981294   -0 57 02.8
 HV7179
 HV7179_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6849801437(NAD 83)
 HV7179
 HV7179                          SUPERSEDED SURVEY CONTROL
 HV7179
 HV7179  NAD 83(1986)-  38 51 06.98257(N)    076 30 55.60684(W) AD(       ) 3
 HV7179  NAD 27      -  38 51 06.58500(N)    076 30 56.75400(W) AD(       ) 3
 HV7179  USSD        -  38 51 06.94900(N)    076 30 56.57200(W) AD(       ) 3
 HV7179
 HV7179.Superseded values are not recommended for survey control.
 HV7179
 HV7179.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7179.See file dsdata.pdf to determine how the superseded data were derived.
 HV7179
 HV7179_MARK LOGO: MDSFC
 HV7179
 HV7179  HISTORY     - Date     Condition        Report By
 HV7179  HISTORY     - UNK      MONUMENTED       MDSFC
 HV7179  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7179
 HV7179                          STATION DESCRIPTION
 HV7179
 HV7179'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7179'THE STATION COULD NOT BE FOUND.  THERE WAS NO PREVIOUS DESCRIPTION
 HV7179'AVAILABLE FOR THIS STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DO9459 ***********************************************************************
 DO9459  DESIGNATION -  B450
 DO9459  PID         -  DO9459
 DO9459  STATE/COUNTY-  MD/ST MARYS
 DO9459  COUNTRY     -  US
 DO9459  USGS QUAD   -  SOLOMONS ISLAND (2016)
 DO9459
 DO9459                         *CURRENT SURVEY CONTROL
 DO9459  ______________________________________________________________________
 DO9459* NAD 83(2011) POSITION- 38 16 43.57142(N) 076 27 00.38225(W)   ADJUSTED
 DO9459* NAD 83(2011) ELLIP HT-    -7.295 (meters)        (09/09/13)   ADJUSTED
 DO9459* NAD 83(2011) EPOCH   -  2010.00
 DO9459* NAVD 88 ORTHO HEIGHT -    27.2   (meters)       89.    (feet) GPS OBS
 DO9459  ______________________________________________________________________
 DO9459  NAVD 88 orthometric height was determined with geoid model    GEOID12A
 DO9459  GEOID HEIGHT    -        -34.492 (meters)                     GEOID12A
 DO9459  GEOID HEIGHT    -        -34.489 (meters)                     GEOID18
 DO9459  NAD 83(2011) X  -  1,174,579.450 (meters)                     COMP
 DO9459  NAD 83(2011) Y  - -4,873,774.563 (meters)                     COMP
 DO9459  NAD 83(2011) Z  -  3,929,776.587 (meters)                     COMP
 DO9459  LAPLACE CORR    -         -5.84  (seconds)                    DEFLEC18
 DO9459
 DO9459  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DO9459  Standards:
 DO9459         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DO9459            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DO9459  -------------------------------------------------------------------
 DO9459  NETWORK    1.01   2.67           0.45   0.37   1.36     -0.01097719
 DO9459  -------------------------------------------------------------------
 DO9459  Click here for local accuracies and other accuracy information.
 DO9459
 DO9459.The horizontal coordinates were established by GPS observations
 DO9459.and adjusted by the GEOMETRICS GPS INCORPORATED in September 2013.
 DO9459
 DO9459.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DO9459.been affixed to the stable North American tectonic plate. See 
 DO9459.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DO9459
 DO9459.The horizontal coordinates are valid at the epoch date displayed above
 DO9459.which is a decimal equivalence of Year/Month/Day.
 DO9459
 DO9459.The orthometric height was determined by GPS observations and a
 DO9459.high-resolution geoid model.
 DO9459
 DO9459.Significant digits in the geoid height do not necessarily reflect accuracy.
 DO9459.GEOID18 height accuracy estimate available here.
 DO9459
 DO9459.Click photographs - Photos may exist for this station.
 DO9459
 DO9459.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DO9459
 DO9459.The Laplace correction was computed from DEFLEC18 derived deflections.
 DO9459
 DO9459.The ellipsoidal height was determined by GPS observations
 DO9459.and is referenced to NAD 83.
 DO9459
 DO9459. The following values were computed from the NAD 83(2011) position.
 DO9459
 DO9459;                    North         East     Units Scale Factor Converg.
 DO9459;SPC MD       -    68,091.176   448,115.012   MT  1.00000376   +0 20 42.5
 DO9459;SPC MD       -   223,395.80  1,470,190.67   sFT  1.00000376   +0 20 42.5
 DO9459;UTM  18      - 4,237,740.274   373,164.829   MT  0.99979812   -0 53 54.4
 DO9459
 DO9459!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DO9459!SPC MD       -   1.00000114  x   1.00000376  =   1.00000490
 DO9459!UTM  18      -   1.00000114  x   0.99979812  =   0.99979926
 DO9459
 DO9459:                Primary Azimuth Mark                     Grid Az
 DO9459:SPC MD       -  PAX25                                    218 29 04.6
 DO9459:UTM  18      -  PAX25                                    219 43 41.5
 DO9459
 DO9459_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7316437740(NAD 83)
 DO9459
 DO9459|---------------------------------------------------------------------|
 DO9459| PID    Reference Object                     Distance      Geod. Az  |
 DO9459|                                                           dddmmss.s |
 DO9459| DO9425 PAX25                               428.944 METERS 2184947.1 |
 DO9459|---------------------------------------------------------------------|
 DO9459
 DO9459                          SUPERSEDED SURVEY CONTROL
 DO9459
 DO9459.No superseded survey control is available for this station.
 DO9459
 DO9459_MARKER: F = FLANGE-ENCASED ROD
 DO9459_SETTING: 45 = UNSPECIFIED DEEP UNSLEEVED SETTING (10 FT.+)
 DO9459_STAMPING: B450
 DO9459_MARK LOGO: USN
 DO9459_PROJECTION: RECESSED 5 CENTIMETERS
 DO9459_MAGNETIC: I = MARKER IS A STEEL ROD
 DO9459_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DO9459_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DO9459+SATELLITE: SATELLITE OBSERVATIONS - January 01, 2000
 DO9459_ROD/PIPE-DEPTH: 7.6 meters
 DO9459
 DO9459  HISTORY     - Date     Condition        Report By
 DO9459  HISTORY     - 20000101 MONUMENTED       USN
 DO9459
 DO9459                          STATION DESCRIPTION
 DO9459
 DO9459'DESCRIBED BY US NAVY 2000
 DO9459'THE STATION IS LOCATED ABOUT 8.1 MI (13.0 KM) SOUTHEAST OF HOLLYWOOD,
 DO9459'7.8 MI (12.6 KM) SOUTH-SOUTHWEST OF COVE POINT AND 6.4 MI (10.3 KM)
 DO9459'NORTH OF SAINT MARYS CITY.
 DO9459'
 DO9459'TO REACH FROM THE INTERSECTION OF MARYLAND ROUTE 235, THREE NOTCH ROAD
 DO9459'AND BUSE ROAD, GO SOUTHEAST ON BUSE ROAD 0.6 MI (1.0 KM) TO AN
 DO9459'INTERSECTION WITH CUDDIHY ROAD, TURN LEFT AND GO 0.25 MI (0.4 KM)
 DO9459'NORTHEAST TO THE STATION ON THE RIGHT.
 DO9459'
 DO9459'THE STATION IS A DISK STAMPED --B450-- ON A ROD DRIVEN TO AN UNKNOWN
 DO9459'DEPTH.  THE LOGO CAP IS SET FLUSH WITH THE GROUND AND THE TOP OF THE
 DO9459'DISK IS 10 CM (4 INCHES) BELOW THE TOP OF THE LOGO CAP.  THE MARK IS
 DO9459'39.3 FT (12.0 M) NORTHEAST OF THE NORTHWESTERN CORNER OF A BRICK
 DO9459'BUILDING, 57.9 FT (17.6 M) NORTHWEST OF THE NORTHEASTERN CORNER OF A
 DO9459'BRICK BUILDING, 131.9 FT (40.2 M) WEST OF A FIRE HYDRANT, 11.3 FT (3.4
 DO9459'M) SOUTHWEST OF THE CORNER OF A BACK OF CURB ON MCLEOD ROAD, 44.1 FT
 DO9459'(13.4 M) SOUTHEAST OF A BUILDING SIGN, 44.7 FT (13.6 M) NORTHEAST OF A
 DO9459'COMMUNICATIONS MANHOLE, 68.7 FT (20.9 M) EAST OF THE EDGE OF PAVEMENT
 DO9459'ON CUDDIHY ROAD, 1.0 FT (0.3 M) NORTH OF A FIBERGLASS WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6103 ***********************************************************************
 JV6103  DESIGNATION -  BA 03
 JV6103  PID         -  JV6103
 JV6103  STATE/COUNTY-  MD/BALTIMORE
 JV6103  COUNTRY     -  US
 JV6103  USGS QUAD   -  PHOENIX (2016)
 JV6103
 JV6103                         *CURRENT SURVEY CONTROL
 JV6103  ______________________________________________________________________
 JV6103* NAD 83(1991) POSITION- 39 30 23.30252(N) 076 34 46.76683(W)   ADJUSTED
 JV6103* NAVD 88 ORTHO HEIGHT -   175.    (meters)      574.    (feet) SCALED
 JV6103  ______________________________________________________________________
 JV6103  GEOID HEIGHT    -        -32.466 (meters)                     GEOID18
 JV6103  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 JV6103  HORZ ORDER      -  THIRD
 JV6103
 JV6103.The horizontal coordinates were established by classical geodetic methods
 JV6103.and adjusted by the National Geodetic Survey in January 1992.
 JV6103
 JV6103.The orthometric height was scaled from a topographic map.
 JV6103
 JV6103.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6103.GEOID18 height accuracy estimate available here.
 JV6103
 JV6103.Click photographs - Photos may exist for this station.
 JV6103
 JV6103.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6103
 JV6103. The following values were computed from the NAD 83(1991) position.
 JV6103
 JV6103;                    North         East     Units Scale Factor Converg.
 JV6103;SPC MD       -   204,316.806   436,151.993   MT  1.00001037   +0 15 49.8
 JV6103;SPC MD       -   670,329.39  1,430,942.00   sFT  1.00001037   +0 15 49.8
 JV6103;UTM  18      - 4,374,174.028   364,191.891   MT  0.99982708   -1 00 18.3
 JV6103
 JV6103!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6103!SPC MD       -   0.99997768  x   1.00001037  =   0.99998805
 JV6103!UTM  18      -   0.99997768  x   0.99982708  =   0.99980476
 JV6103
 JV6103:                Primary Azimuth Mark                     Grid Az
 JV6103:SPC MD       -  BA 03 AZ MK                              125 02 40.5
 JV6103:UTM  18      -  BA 03 AZ MK                              126 18 48.6
 JV6103
 JV6103_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6419174174(NAD 83)
 JV6103
 JV6103|---------------------------------------------------------------------|
 JV6103| PID    Reference Object                     Distance      Geod. Az  |
 JV6103|                                                           dddmmss.s |
 JV6103| JV6107 JACKSONVILLE CONTL PLINE MAST       APPROX. 2.0 KM 0612943.8 |
 JV6103| CA9902 BA 03 RM 1                           16.069 METERS 08231     |
 JV6103| CA9901 BA 03 AZ MK                                        1251830.3 |
 JV6103| JV5443 CUB HILL FIRE TOWER                 APPROX.11.6 KM 1540442.0 |
 JV6103| CA9903 BA 03 RM 2                           27.168 METERS 19645     |
 JV6103|---------------------------------------------------------------------|
 JV6103
 JV6103                          SUPERSEDED SURVEY CONTROL
 JV6103
 JV6103  NAD 83(1986)-  39 30 23.29825(N)    076 34 46.77372(W) AD(       ) 3
 JV6103  NAD 27      -  39 30 22.91300(N)    076 34 47.88800(W) AD(       ) 3
 JV6103
 JV6103.Superseded values are not recommended for survey control.
 JV6103
 JV6103.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6103.See file dsdata.pdf to determine how the superseded data were derived.
 JV6103
 JV6103_MARKER: DS = TRIANGULATION STATION DISK
 JV6103_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6103_STAMPING: BA 03 1957
 JV6103_MARK LOGO: CGS
 JV6103_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6103+STABILITY: SURFACE MOTION
 JV6103
 JV6103  HISTORY     - Date     Condition        Report By
 JV6103  HISTORY     - 1957     MONUMENTED       CGS
 JV6103
 JV6103                          STATION DESCRIPTION
 JV6103
 JV6103'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6103'STATION IS LOCATED ABOUT 15 MILES NORTH OF BALTIMORE, ABOUT 7 MILES
 JV6103'NORTH OF TOWSON AND 1-1/4 MILES SOUTHWEST OF JACKSONVILLE.  STATION
 JV6103'IS 39 FEET NORTH OF STORAGE TANK.  THE MARK IS FLUSH WITH THE
 JV6103'GROUND AND THE DISK IS STAMPED BA 03 1957.
 JV6103'
 JV6103'A TRAVERSE CONNECTION WAS MADE TO REFERENCE MARK NO. 1 WHICH IS
 JV6103'LOCATED ON A SEVEN FOOT MOUND OF EARTH.  THE DISK IS SET FLUSH IN
 JV6103'A DRILL HOLE IN THE CONCRETE BASE AND IS STAMPED BA 03 NO 1 1957.
 JV6103'
 JV6103'REFERENCE MARK NO. 2 IS 59 FEET NORTH OF FENCE AND 47 FEET
 JV6103'SOUTHEAST OF A SMALL BUILDING.  THE MARK IS FLUSH WITH THE GROUND
 JV6103'AND THE DISK IS STAMPED BA 03 NO 2 1957.
 JV6103'
 JV6103'AZIMUTH MARK IS 19 FEET EAST OF THE APPROXIMATE CENTER OF THE
 JV6103'ROAD, 19 FEET NORTH OF TELEPHONE POLE, 2.5 FEET NORTH OF A WITNESS
 JV6103'POST AND 1 FOOT WEST OF A FENCE.  THE MARK PROJECTS ABOUT 4 INCHES
 JV6103'AND THE DISK IS STAMPED BA 03 1957.
 JV6103'
 JV6103'TO REACH STATION FROM THE JUNCTION OF STATE HIGHWAYS 145 AND 146
 JV6103'IN THE SOUTH EDGE OF JACKSONVILLE GO SOUTH ON STATE HIGHWAY 146
 JV6103'FOR 1.2 MILES TO FORKS.  KEEP RIGHT FORK ON STATE HIGHWAY 143 FOR
 JV6103'0.05 MILE TO SIDE ROAD RIGHT.  TURN LEFT AND FOLLOW BLACKTOP ROAD
 JV6103'FOR 0.6 MILE TO GATE.  PASS THROUGH GATE AND THEN BEAR RIGHT
 JV6103'ALONG FENCE FOR 0.05 MILE.  STATION IS ABOUT 50 YARDS TO THE
 JV6103'NORTH AS DESCRIBED.  TO REACH AZIMUTH MARK FROM THE JUNCTION
 JV6103'OF STATE HIGHWAYS 146 AND 143 GO SOUTHERLY ON STATE HIGHWAY
 JV6103'146 FOR 0.3 MILE TO AZIMUTH MARK ON THE LEFT AS DESCRIBED.
 JV6103'
 JV6103'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5423 ***********************************************************************
 JV5423  DESIGNATION -  BA 09
 JV5423  PID         -  JV5423
 JV5423  STATE/COUNTY-  MD/BALTIMORE
 JV5423  COUNTRY     -  US
 JV5423  USGS QUAD   -  WHITE MARSH (2016)
 JV5423
 JV5423                         *CURRENT SURVEY CONTROL
 JV5423  ______________________________________________________________________
 JV5423* NAD 83(1991) POSITION- 39 26 50.81919(N) 076 27 37.61436(W)   ADJUSTED
 JV5423* NAVD 88 ORTHO HEIGHT -   119.    (meters)      390.    (feet) SCALED
 JV5423  ______________________________________________________________________
 JV5423  GEOID HEIGHT    -        -32.776 (meters)                     GEOID18
 JV5423  LAPLACE CORR    -         -3.08  (seconds)                    DEFLEC18
 JV5423  HORZ ORDER      -  THIRD
 JV5423
 JV5423.The horizontal coordinates were established by classical geodetic methods
 JV5423.and adjusted by the National Geodetic Survey in January 1992.
 JV5423
 JV5423.The orthometric height was scaled from a topographic map.
 JV5423
 JV5423.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5423.GEOID18 height accuracy estimate available here.
 JV5423
 JV5423.Click photographs - Photos may exist for this station.
 JV5423
 JV5423.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5423
 JV5423. The following values were computed from the NAD 83(1991) position.
 JV5423
 JV5423;                    North         East     Units Scale Factor Converg.
 JV5423;SPC MD       -   197,817.771   446,443.312   MT  0.99999955   +0 20 19.1
 JV5423;SPC MD       -   649,007.14  1,464,706.10   sFT  0.99999955   +0 20 19.1
 JV5423;UTM  18      - 4,367,450.194   374,334.927   MT  0.99979443   -0 55 41.0
 JV5423
 JV5423!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5423!SPC MD       -   0.99998651  x   0.99999955  =   0.99998606
 JV5423!UTM  18      -   0.99998651  x   0.99979443  =   0.99978094
 JV5423
 JV5423:                Primary Azimuth Mark                     Grid Az
 JV5423:SPC MD       -  BA 09 AZ MK                              005 03 14.8
 JV5423:UTM  18      -  BA 09 AZ MK                              006 19 14.9
 JV5423
 JV5423_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7433467450(NAD 83)
 JV5423
 JV5423|---------------------------------------------------------------------|
 JV5423| PID    Reference Object                     Distance      Geod. Az  |
 JV5423|                                                           dddmmss.s |
 JV5423| CA9904 BA 09 AZ MK                                        0052333.9 |
 JV5423| JV5430 BA 09 RM 1                           13.409 METERS 09743     |
 JV5423| CA9905 BA 09 RM 2                           24.610 METERS 21240     |
 JV5423| JV5496 BALTIMORE TV STATION WMAR MAST      APPROX.22.0 KM 2170226.7 |
 JV5423| JV5432 CARNEY MICROWAVE RELAY TOWER        APPROX. 8.0 KM 2193246.9 |
 JV5423| JV5443 CUB HILL FIRE TOWER                 APPROX. 6.5 KM 2331710.4 |
 JV5423| JV5444 MARYLAND TRAINING SCHOOL TANK       APPROX. 6.0 KM 2393252.0 |
 JV5423| JV5461 TOWSON RADIO STA WTOW MAST          APPROX. 8.8 KM 2481703.0 |
 JV5423| JV5445 LONG GREEN BALTIMORE GAS TOWER      APPROX. 6.1 KM 3042256.4 |
 JV5423|---------------------------------------------------------------------|
 JV5423
 JV5423                          SUPERSEDED SURVEY CONTROL
 JV5423
 JV5423  NAD 83(1986)-  39 26 50.81426(N)    076 27 37.62188(W) AD(       ) 3
 JV5423  NAD 27      -  39 26 50.42500(N)    076 27 38.76100(W) AD(       ) 3
 JV5423
 JV5423.Superseded values are not recommended for survey control.
 JV5423
 JV5423.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5423.See file dsdata.pdf to determine how the superseded data were derived.
 JV5423
 JV5423_MARKER: DS = TRIANGULATION STATION DISK
 JV5423_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5423_STAMPING: BA 09 1957
 JV5423_MARK LOGO: CGS
 JV5423_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5423+STABILITY: SURFACE MOTION
 JV5423
 JV5423  HISTORY     - Date     Condition        Report By
 JV5423  HISTORY     - 1957     MONUMENTED       CGS
 JV5423
 JV5423                          STATION DESCRIPTION
 JV5423
 JV5423'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5423'THE STATION IS LOCATED AT THE U.S. ARMY SITE BA 09, ABOUT 14 MILES
 JV5423'NORTHEAST OF THE CENTER OF BALTIMORE, ABOUT 8.5 MILES
 JV5423'EAST-NORTHEAST OF TOWSON AND 15 MILES SOUTHWEST OF FORK.  IT IS 60
 JV5423'FEET SOUTHEAST OF FENCED IN TRANSFORMERS, 40 FEET SOUTHWEST OF
 JV5423'FENCE AND 30 FEET EAST OF APPROXIMATE CENTER OF ROAD.  THE MARK IS
 JV5423'SET FLUSH WITH THE SURFACE OF THE GROUND AND THE DISK IS STAMPED
 JV5423'BA 09 1957.
 JV5423'
 JV5423'REFERENCE MARK NO. 1 IS SET IN A DRILL HOLE IN A CONCRETE BASE
 JV5423'WHICH IS A 15 FOOT CONCRETE PILLAR.  THE MARK IS SET FLUSH WITH
 JV5423'THE CONCRETE SURFACE AND THE DISK IS STAMPED BA 09 NO 1 1957.
 JV5423'
 JV5423'REFERENCE MARK NO. 2 IS 29 FEET WEST OF THE APPROXIMATE
 JV5423'CENTERLINE OF ROAD AND 3 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF
 JV5423'GENERATOR BUILDING.  THE MARK IS SET FLUSH WITH THE SURFACE OF THE
 JV5423'GROUND AND THE DISK IS STAMPED BA 09 NO 2 1957.
 JV5423'
 JV5423'AZIMUTH MARK IS 54 FEET SOUTH-SOUTHWEST OF CROSSROADS, 10 FEET
 JV5423'SOUTH-SOUTHEAST OF CORNER OF BARN, 9 FEET NORTHWEST OF DRIVEWAY, 2
 JV5423'FEET SOUTH-SOUTHWEST OF WITNESS POST, 1 FOOT SOUTH-SOUTHEAST OF
 JV5423'FENCE.  THE MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED
 JV5423'BA 09 1957.
 JV5423'
 JV5423'TO REACH FROM THE POST OFFICE IN FORK, GO SOUTHWEST ON STATE
 JV5423'HIGHWAY 147 (HARFORD ROAD) FOR 0.9 MILE TO CROSSROADS.  CONTINUE
 JV5423'STRAIGHT AHEAD ON STATE HIGHWAY 147 FOR 0.75 MILE TO SIDE ROAD
 JV5423'LEFT JUST AFTER CROSSING SMALL CONCRETE BRIDGE.  TURN LEFT AND GO
 JV5423'UP HILL FOR 0.25 MILE TO SIDE ROAD LEFT.  CONTINUE STRAIGHT AHEAD
 JV5423'FOR 0.4 MILE TO GATE.  PASS THROUGH GATE, TURN LEFT AND GO FOR
 JV5423'0.15 MILE TO THE STATION AS DESCRIBED.
 JV5423'
 JV5423'TO REACH AZIMUTH MARK FROM THE STATION GO SOUTHWEST TO GATE, PASS
 JV5423'THROUGH GATE AND GO NORTHEAST FOR 0.4 MILE TO SIDE ROAD RIGHT,
 JV5423'TURN RIGHT ON NARROW SURFACED ROAD FOR 0.2 MILE TO BARN AND
 JV5423'CROSSROADS, TURN RIGHT FOR 50 FEET TO AZIMUTH MARK AS DESCRIBED.
 JV5423'
 JV5423'HEIGHT OF LIGHT ABOVE STATION MARK 25 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5308 ***********************************************************************
 JV5308  DESIGNATION -  BA 13 18
 JV5308  PID         -  JV5308
 JV5308  STATE/COUNTY-  MD/HARFORD
 JV5308  COUNTRY     -  US
 JV5308  USGS QUAD   -  EDGEWOOD (2016)
 JV5308
 JV5308                         *CURRENT SURVEY CONTROL
 JV5308  ______________________________________________________________________
 JV5308* NAD 83(1991) POSITION- 39 24 57.50948(N) 076 16 19.95330(W)   ADJUSTED
 JV5308* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV5308  ______________________________________________________________________
 JV5308  GEOID HEIGHT    -        -33.170 (meters)                     GEOID18
 JV5308  LAPLACE CORR    -         -2.65  (seconds)                    DEFLEC18
 JV5308  HORZ ORDER      -  THIRD
 JV5308
 JV5308.The horizontal coordinates were established by classical geodetic methods
 JV5308.and adjusted by the National Geodetic Survey in January 1992.
 JV5308
 JV5308.The orthometric height was scaled from a topographic map.
 JV5308
 JV5308.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5308.GEOID18 height accuracy estimate available here.
 JV5308
 JV5308.Click photographs - Photos may exist for this station.
 JV5308
 JV5308.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5308
 JV5308. The following values were computed from the NAD 83(1991) position.
 JV5308
 JV5308;                    North         East     Units Scale Factor Converg.
 JV5308;SPC MD       -   194,435.902   462,674.052   MT  0.99999423   +0 27 24.4
 JV5308;SPC MD       -   637,911.79  1,517,956.45   sFT  0.99999423   +0 27 24.4
 JV5308;UTM  18      - 4,363,711.492   390,483.352   MT  0.99974767   -0 48 28.3
 JV5308
 JV5308!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5308!SPC MD       -   1.00000399  x   0.99999423  =   0.99999822
 JV5308!UTM  18      -   1.00000399  x   0.99974767  =   0.99975166
 JV5308
 JV5308:                Primary Azimuth Mark                     Grid Az
 JV5308:SPC MD       -  OSBORNES RUIN 4                          351 37 09.9
 JV5308:UTM  18      -  OSBORNES RUIN 4                          352 53 02.6
 JV5308
 JV5308_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9048363711(NAD 83)
 JV5308
 JV5308|---------------------------------------------------------------------|
 JV5308| PID    Reference Object                     Distance      Geod. Az  |
 JV5308|                                                           dddmmss.s |
 JV5308| CA9908 BA 13 18 RM 3                        42.126 METERS 03752     |
 JV5308| JV4943 SWAN MEADOW WATER TANK              APPROX.13.4 KM 0460242.7 |
 JV5308| CA9906 BA 13 18 RM 1                        48.999 METERS 07851     |
 JV5308| CA9907 BA 13 18 RM 2                        84.037 METERS 18819     |
 JV5308| JV5313 EDGEWOOD HARFORD MANOR TANK         APPROX. 2.7 KM 2820457.0 |
 JV5308| CA9909 BA 13 18 RM 4                        44.498 METERS 30924     |
 JV5308| JV0393 OSBORNES RUIN 4                     APPROX. 5.6 KM 3520434.3 |
 JV5308|---------------------------------------------------------------------|
 JV5308
 JV5308                          SUPERSEDED SURVEY CONTROL
 JV5308
 JV5308  NAD 83(1986)-  39 24 57.50321(N)    076 16 19.95999(W) AD(       ) 3
 JV5308  NAD 27      -  39 24 57.10980(N)    076 16 21.11520(W) AD(       ) 3
 JV5308
 JV5308.Superseded values are not recommended for survey control.
 JV5308
 JV5308.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5308.See file dsdata.pdf to determine how the superseded data were derived.
 JV5308
 JV5308_MARKER: DS = TRIANGULATION STATION DISK
 JV5308_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5308_STAMPING: BA 13 18 1957
 JV5308_MARK LOGO: CGS
 JV5308_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5308+STABILITY: SURFACE MOTION
 JV5308
 JV5308  HISTORY     - Date     Condition        Report By
 JV5308  HISTORY     - 1957     MONUMENTED       CGS
 JV5308  HISTORY     - 1965     GOOD             MDDT
 JV5308
 JV5308                          STATION DESCRIPTION
 JV5308
 JV5308'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5308'STATION IS LOCATED AT U.S. ARMY SITE BA 13 18 AND AT THE ARMY
 JV5308'CHEMICAL CENTER ABERDEEN PROVING GROUNDS ABOUT 20 MILES
 JV5308'EAST-NORTHEAST OF THE CENTER OF BALTIMORE AND ABOUT 8-1/2 MILES
 JV5308'SOUTHWEST OF ABERDEEN AND ABOUT 1-1/2 MILES EAST OF THE VILLAGE OF
 JV5308'EDGEWOOD.  STATION IS 55 FEET NORTHWEST OF NORTHWEST CORNER OF
 JV5308'BUILDING, 65 FEET NORTHEAST OF Y FORK AND 1 FOOT WEST OF SIDEWALK.
 JV5308'THE MARK IS SET FLUSH AND THE DISK IS STAMPED BA 13 18 1957.
 JV5308'
 JV5308'REFERENCE MARK NO. 1 IS SET IN A DRILL HOLE IN CONCRETE PAD ON A 4
 JV5308'FOOT MOUND.  THE MARK IS FLUSH AND THE DISK IS STAMPED BA 13 18 NO
 JV5308'1 1957.
 JV5308'
 JV5308'REFERENCE MARK NO. 2 IS SET IN A DRILL HOLE IN A CONCRETE PAD ATOP
 JV5308'A 7 FOOT MOUND.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED BA
 JV5308'13 18 NO 2 1957.
 JV5308'
 JV5308'NO SUITABLE PLACE WAS FOUND TO ESTABLISH AN AZIMUTH MARK.
 JV5308'
 JV5308'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JV5308'HIGHWAY NO. 24 IN NORTH EDGE OF EDGEWOOD, GO SOUTH ON STATE
 JV5308'HIGHWAY NO. 24 THROUGH EDGEWOOD FOR 1.65 MILE TO RAILROAD
 JV5308'OVERPASS, PASS UNDER RAILROAD AND CONTINUE 0.05 MILE TO SIDE ROAD
 JV5308'LEFT. TURN LEFT, PASS THROUGH GATE AND GO ALONG RAILROAD FOR 1.2
 JV5308'MILES TO CROSSROADS.  TURN RIGHT AND GO SOUTHERLY FOR 0.25 MILE TO
 JV5308'GUARD GATE.  PASS THROUGH GATE, TURN LEFT AND CONTINUE 0.05 MILE
 JV5308'TO TWIN SITE AND STATION AS DESCRIBED.
 JV5308'
 JV5308'HEIGHT OF LIGHT ABOVE STATION MARK 77 METERS.
 JV5308
 JV5308                          STATION RECOVERY (1965)
 JV5308
 JV5308'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1965
 JV5308'THE STATION AND REFERENCE MARK 2 WERE RECOVERED IN GOOD CONDITION.
 JV5308'REFERENCE MARK 1 WAS NOT FOUND AND REFERENCE MARK 2 WAS IN DANGER
 JV5308'OF BEING DESTROYED SO REFERENCE MARKS 3 AND 4 WERE ESTABLISHED.  A
 JV5308'COMPLETE DESCRIPTION FOLLOWS--
 JV5308'
 JV5308'STATION IS LOCATED AT THE EDGEWOOD ARMY CHEMICAL CENTER OF THE
 JV5308'U.S. ARMY SITE BA-13-18, ABOUT 1.0 MILE EAST OF THE EDGEWOOD ARMY
 JV5308'CHEMICAL CENTER AND 1.5 MILES SOUTHEAST OF THE VILLAGE OF
 JV5308'EDGEWOOD.  IT IS 48.6 FEET NORTHWEST OF THE NORTHWEST CORNER OF
 JV5308'BUILDING 6833, 1 FOOT WEST OF THE CONCRETE SIDEWALK, 82.1 FEET
 JV5308'EAST OF THE NORTHEAST CORNER OF THE READY BUILDING NO. 6832, AND
 JV5308'33.7 FEET EAST OF THE CENTERLINE OF THE PAVED ROAD.  A STANDARD
 JV5308'DISK SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND
 JV5308'STAMPED BA 13 18 1957.
 JV5308'
 JV5308'REFERENCE MARK 3 IS 138.21 FEET SOUTH OF THE STATION IN THE FIRST
 JV5308'CONCRETE STEP OF BUILDING NUMBER 6836.  A STANDARD DISK SET FLUSH
 JV5308'STAMPED BA 13-18, NO. 3 1965.
 JV5308'
 JV5308'REFERENCE MARK 4 IS 145.99 FEET NORTHWEST OF THE STATION NEAR THE
 JV5308'GUARD HOUSE AT THE GATE, 44 FEET EAST OF THE SOUTHEAST CORNER OF
 JV5308'THE GUARD HOUSE, 15.5 FEET SOUTH OF THE METAL FENCE LINE, AND 45
 JV5308'FEET NORTH OF THE PAVED ROAD.  A STANDARD DISK SET IN A CONCRETE
 JV5308'POST PROJECTING 3 INCHES STAMPED BA 13-18 NO. 4 1965.
 JV5308'
 JV5308'TO REACH THE STATION FROM THE JUNCTION OF U.S. ROUTE 40 AND
 JV5308'MARYLAND ROUTE 24, PROCEED SOUTH ALONG MARYLAND ROUTE 24 FOR 1.70
 JV5308'(PASSING UNDER THE RAILROAD BRIDGE) TO FAIRVIEW POINT ROAD ON THE
 JV5308'LEFT.  TURN LEFT AND GO EAST ALONG FAIRVIEW POINT ROAD FOR 1.4
 JV5308'MILES TO A JUNCTION.  TURN RIGHT AND GO 0.25 MILE SOUTH ALONG THE
 JV5308'PAVED ROAD TO A GUARD HOUSE AND GATE.  PASS THROUGH GATE, TURN
 JV5308'LEFT AND GO 200 FEET EAST TO THE STATION AS DESCRIBED.
 JV5308'
 JV5308'NOTE--DESCRIPTION TYPED IN OFFICE FROM INFORMATION FURNISHED BY
 JV5308'STATE ROADS COMMISSION OF MARYLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5099 ***********************************************************************
 JV5099  DESIGNATION -  BA 30 31
 JV5099  PID         -  JV5099
 JV5099  STATE/COUNTY-  MD/KENT
 JV5099  COUNTRY     -  US
 JV5099  USGS QUAD   -  ROCK HALL (2016)
 JV5099
 JV5099                         *CURRENT SURVEY CONTROL
 JV5099  ______________________________________________________________________
 JV5099* NAD 83(1991) POSITION- 39 12 48.61694(N) 076 13 53.15829(W)   ADJUSTED
 JV5099* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV5099  ______________________________________________________________________
 JV5099  GEOID HEIGHT    -        -33.241 (meters)                     GEOID18
 JV5099  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 JV5099  HORZ ORDER      -  THIRD
 JV5099
 JV5099.The horizontal coordinates were established by classical geodetic methods
 JV5099.and adjusted by the National Geodetic Survey in January 1992.
 JV5099
 JV5099.The orthometric height was scaled from a topographic map.
 JV5099
 JV5099.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5099.GEOID18 height accuracy estimate available here.
 JV5099
 JV5099.Click photographs - Photos may exist for this station.
 JV5099
 JV5099.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5099
 JV5099. The following values were computed from the NAD 83(1991) position.
 JV5099
 JV5099;                    North         East     Units Scale Factor Converg.
 JV5099;SPC MD       -   171,987.397   466,374.693   MT  0.99996718   +0 28 56.6
 JV5099;SPC MD       -   564,261.98  1,530,097.64   sFT  0.99996718   +0 28 56.6
 JV5099;UTM  18      - 4,341,192.205   393,687.613   MT  0.99973916   -0 46 43.0
 JV5099
 JV5099!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5099!SPC MD       -   1.00000384  x   0.99996718  =   0.99997102
 JV5099!UTM  18      -   1.00000384  x   0.99973916  =   0.99974300
 JV5099
 JV5099:                Primary Azimuth Mark                     Grid Az
 JV5099:SPC MD       -  BA 30 31 AZ MK                           073 26 45.6
 JV5099:UTM  18      -  BA 30 31 AZ MK                           074 42 25.2
 JV5099
 JV5099_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9368741192(NAD 83)
 JV5099
 JV5099|---------------------------------------------------------------------|
 JV5099| PID    Reference Object                     Distance      Geod. Az  |
 JV5099|                                                           dddmmss.s |
 JV5099| CA9910 BA 30 31 AZ MK                                     0735542.2 |
 JV5099| CA9911 BA 30 31 RM 1                        80.532 METERS 08955     |
 JV5099| JV5108 FAIRLEE ATT RELAY TOWER             APPROX. 4.8 KM 0931926.1 |
 JV5099| CA9912 BA 30 31 RM 2                                      19423     |
 JV5099|---------------------------------------------------------------------|
 JV5099
 JV5099                          SUPERSEDED SURVEY CONTROL
 JV5099
 JV5099  NAD 83(1986)-  39 12 48.61068(N)    076 13 53.16746(W) AD(       ) 3
 JV5099  NAD 27      -  39 12 48.21890(N)    076 13 54.33360(W) AD(       ) 3
 JV5099
 JV5099.Superseded values are not recommended for survey control.
 JV5099
 JV5099.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5099.See file dsdata.pdf to determine how the superseded data were derived.
 JV5099
 JV5099_MARKER: DS = TRIANGULATION STATION DISK
 JV5099_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5099_STAMPING: BA 30 31 1957
 JV5099_MARK LOGO: CGS
 JV5099_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5099+STABILITY: SURFACE MOTION
 JV5099
 JV5099  HISTORY     - Date     Condition        Report By
 JV5099  HISTORY     - 1957     MONUMENTED       CGS
 JV5099  HISTORY     - 19960420 MARK NOT FOUND   USPSQD
 JV5099  HISTORY     - 20250416 MARK NOT FOUND   PROFLN
 JV5099
 JV5099                          STATION DESCRIPTION
 JV5099
 JV5099'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5099'STATION IS LOCATED AT U.S. ARMY SITE BA 30 31, ABOUT 21.0 MILES
 JV5099'EAST-SOUTHEAST OF THE CENTER OF BALTIMORE, 9.0 MILES WEST OF
 JV5099'CHESTERTOWN AND ABOUT 0.6 MILE EAST OF THE EASTERN SHORE OF
 JV5099'CHESAPEAKE BAY.  STATION IS 110 FEET SOUTHEAST OF A
 JV5099'T-INTERSECTION, 32 FEET SOUTH OF APPROXIMATE CENTERLINE OF
 JV5099'DRIVEWAY AND 69 FEET WEST-SOUTHWEST OF Y FORK.  THE MARK IS
 JV5099'SET FLUSH AND THE DISK IS STAMPED BA 30 31 1957.
 JV5099'
 JV5099'REFERENCE MARK NO. 1 IS SET FLUSH IN DRILLHOLE IN CONCRETE PAD,
 JV5099'AND ON TOP OF A 10 FOOT MOUND.  THE MARK IS SET FLUSH AND THE
 JV5099'DISK IS STAMPED BA 30 31 NO 1 1957.  REFERENCE MARK NO. 2 IS SET
 JV5099'FLUSH IN A DRILLHOLE IN A CONCRETE PAD AND ON TOP OF A 5 FOOT
 JV5099'MOUND.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED BA 30 31
 JV5099'NO 2 1957.
 JV5099'
 JV5099'AZIMUTH MARK IS 110 FEET SOUTH OF APPROXIMATE CENTERLINE OF
 JV5099'HIGIHWAY NO. 21, 37-1/2 FEET WEST OF APPROXIMATE CENTERLINE OF ROAD
 JV5099'AND 2 FEET SOUTH OF WITNESS POST.  THE MARK PROJECTS 4 INCHES AND
 JV5099'THE DISK IS STAMPED BA 30 31 1957.
 JV5099'
 JV5099'TO REACH FROM THE POST OFFICE IN CHESTERTOWN, GO NORTHWEST AND
 JV5099'WEST ON STATE HIGHWAY NO. 20 FOR 7.9 MILES TO JUNCTION OF
 JV5099'STATE HIGHWAY NO. 21.  TURN RIGHT AND GO WEST ON STATE HIGHWAY
 JV5099'NO. 21 FOR 2.25 MILE TO CROSSROADS AND AZIMUTH MARK ON LEFT AS
 JV5099'DESCRIBED.  CONTINUE WEST ON STATE HIGHWAY NO. 21 FOR 0.4 MILE
 JV5099'TO GUARD GATE AT SITE.  TURN LEFT AND GO SOUTHERLY ON SURFACED
 JV5099'ROAD TO SITE AND STATION AS DESCRIBED.
 JV5099'
 JV5099'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV5099
 JV5099                          STATION RECOVERY (1996)
 JV5099
 JV5099'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV5099'MARK NOT FOUND.
 JV5099
 JV5099                          STATION RECOVERY (2025)
 JV5099
 JV5099'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV5099'SEARCHED FOR, NOT FOUND.  THE PROPERTY WHICH WAS AN ARMY SITE IS NOW
 JV5099'THE COUNTY FAIRGROUNDS.  POSITION FALLS IN A GRASSY AREA, 8-10 FT (2.4
 JV5099'M) SEARCH CIRCLE FROM INTERSECTING THE TIES.  NO OBVIOUS SIGNS OF
 JV5099'DISTURBANCE BUT CONVERSION OF THE PROPERTY FROM MILITARY TO CIVILIAN
 JV5099'MAY HAVE AFFECTED THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5268 ***********************************************************************
 JV5268  DESIGNATION -  BA 43
 JV5268  PID         -  JV5268
 JV5268  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5268  COUNTRY     -  US
 JV5268  USGS QUAD   -  SPARROWS POINT (2016)
 JV5268
 JV5268                         *CURRENT SURVEY CONTROL
 JV5268  ______________________________________________________________________
 JV5268* NAD 83(1991) POSITION- 39 08 13.75921(N) 076 29 50.77481(W)   ADJUSTED
 JV5268* NAVD 88 ORTHO HEIGHT -    28.    (meters)       92.    (feet) SCALED
 JV5268  ______________________________________________________________________
 JV5268  GEOID HEIGHT    -        -33.105 (meters)                     GEOID18
 JV5268  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 JV5268  HORZ ORDER      -  THIRD
 JV5268
 JV5268.The horizontal coordinates were established by classical geodetic methods
 JV5268.and adjusted by the National Geodetic Survey in January 1992.
 JV5268
 JV5268.The orthometric height was scaled from a topographic map.
 JV5268
 JV5268.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5268.GEOID18 height accuracy estimate available here.
 JV5268
 JV5268.Click photographs - Photos may exist for this station.
 JV5268
 JV5268.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5268
 JV5268. The following values were computed from the NAD 83(1991) position.
 JV5268
 JV5268;                    North         East     Units Scale Factor Converg.
 JV5268;SPC MD       -   163,351.678   443,449.064   MT  0.99996022   +0 18 55.5
 JV5268;SPC MD       -   535,929.63  1,454,882.47   sFT  0.99996022   +0 18 55.5
 JV5268;UTM  18      - 4,333,064.612   370,581.944   MT  0.99980623   -0 56 43.0
 JV5268
 JV5268!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5268!SPC MD       -   1.00000084  x   0.99996022  =   0.99996106
 JV5268!UTM  18      -   1.00000084  x   0.99980623  =   0.99980707
 JV5268
 JV5268:                Primary Azimuth Mark                     Grid Az
 JV5268:SPC MD       -  BA 43 AZ MK                              253 19 14.6
 JV5268:UTM  18      -  BA 43 AZ MK                              254 34 53.1
 JV5268
 JV5268_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7058133064(NAD 83)
 JV5268
 JV5268|---------------------------------------------------------------------|
 JV5268| PID    Reference Object                     Distance      Geod. Az  |
 JV5268|                                                           dddmmss.s |
 JV5268| CA9914 BA 43 RM 1                           23.055 METERS 07135     |
 JV5268| JV5297 BA 43 RM 2                           13.131 METERS 16446     |
 JV5268| HV6315 GREENBURY PT NAVAL RADIO MAST       APPROX.16.0 KM 1694217.8 |
 JV5268| CA9913 BA 43 AZ MK                                        2533810.1 |
 JV5268|---------------------------------------------------------------------|
 JV5268
 JV5268                          SUPERSEDED SURVEY CONTROL
 JV5268
 JV5268  NAD 83(1986)-  39 08 13.75524(N)    076 29 50.78482(W) AD(       ) 3
 JV5268  NAD 27      -  39 08 13.36350(N)    076 29 51.92070(W) AD(       ) 3
 JV5268
 JV5268.Superseded values are not recommended for survey control.
 JV5268
 JV5268.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5268.See file dsdata.pdf to determine how the superseded data were derived.
 JV5268
 JV5268_MARKER: DS = TRIANGULATION STATION DISK
 JV5268_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5268_STAMPING: BA 43 1957
 JV5268_MARK LOGO: CGS
 JV5268
 JV5268  HISTORY     - Date     Condition        Report By
 JV5268  HISTORY     - 1957     MONUMENTED       CGS
 JV5268
 JV5268                          STATION DESCRIPTION
 JV5268
 JV5268'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5268'STATION IS LOCATED AT U.S. ARMY SITE ABOUT 12-1/2 MILES
 JV5268'SOUTH-SOUTHEAST OF THE CENTER OF BALTIMORE, 10 MILES NORTH OF
 JV5268'ANNAPOLIS AND ABOUT 7.0 MILES EAST-SOUTHEAST OF GLEN BURNIE.
 JV5268'STATION IS 39 FEET SOUTH OF EDGE OF BANK AND 12 FEET NORTH OF
 JV5268'FOOT OF 10 FOOT MOUND.  THE MARK IS SET FLUSH AND THE DISK IS
 JV5268'STAMPED BA 43 1957.
 JV5268'
 JV5268'REFERENCE MARK NO. 1 IS SET IN A DRILL HOLE IN SIDE WALK, 81 FEET
 JV5268'EAST-NORTHEAST OF A SCREEN AND 50 FEET WEST-NORTHWEST OF A SCREEN.
 JV5268'THE MARK IS SET FLUSH AND THE DISK IS STAMPED BA 43 NO 1 1957.
 JV5268'
 JV5268'REFERENCE MARK NO. 2 IS SET IN THE CENTER OF A CONCRETE PAD ON A
 JV5268'10 FOOT MOUND.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED BA
 JV5268'43 NO 2 1957.
 JV5268'
 JV5268'AZIMUTH MARK IS 24 FEET NORTH OF APPROXIMATE CENTERLINE OF STATE
 JV5268'HIGHWAY NO. 173 AND 3 FEET EAST OF WITNESS POST.  THE MARK
 JV5268'PROJECTS 3 INCHES AND THE DISK IS STAMPED BA 43 1957.
 JV5268'
 JV5268'A TRAVERSE CONNECTION WAS MADE TO REFERENCE MARK NO. 2 AND THE
 JV5268'DISTANCE IS SHOWN ABOVE.
 JV5268'
 JV5268'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 2 AND 648 JUST
 JV5268'EAST OF THE BUSINESS SECTION OF GLEN BURNIE, GO SOUTHEAST ON STATE
 JV5268'HIGHWAY NO. 2 FOR 2.15 MILES TO JUNCTION OF STATE HIGHWAY NO. 177.
 JV5268'TURN LEFT AND GO EASTERLY ON STATE HIGHWAY NO. 177 FOR 4.25 MILES
 JV5268'TO JUNCTION OF STATE HIGHWAY NO. 607.  TURN LEFT AND GO NORTHERLY
 JV5268'ON STATE HIGHWAY NO. 607 FOR 0.75 MILE TO JUNCTION OF STATE
 JV5268'HIGHWAY NO. 173.  TURN RIGHT AND GO NORTHEAST ON STATE HIGHWAY NO.
 JV5268'173 FOR 0.55 MILE TO AZIMUTH MARK ON LEFT (NORTH) SIDE OF HIGHWAY.
 JV5268'CONTINUE NORTHEASTERLY ON STATE HIGHWAY NO. 173 FOR 0.3 MILE TO
 JV5268'GUARD GATE AT SITE ON RIGHT.  TURN RIGHT THROUGH GATE AND GO SOUTH
 JV5268'AND EAST TO FIRST MOUND AND STATION AS DESCRIBED.
 JV5268'
 JV5268'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6043 ***********************************************************************
 JV6043  DESIGNATION -  BA 79 W 05
 JV6043  PID         -  JV6043
 JV6043  STATE/COUNTY-  MD/BALTIMORE
 JV6043  COUNTRY     -  US
 JV6043  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6043
 JV6043                         *CURRENT SURVEY CONTROL
 JV6043  ______________________________________________________________________
 JV6043* NAD 83(1991) POSITION- 39 20 49.27949(N) 076 51 26.74665(W)   ADJUSTED
 JV6043* NAVD 88 ORTHO HEIGHT -   154.    (meters)      505.    (feet) SCALED
 JV6043  ______________________________________________________________________
 JV6043  GEOID HEIGHT    -        -32.091 (meters)                     GEOID18
 JV6043  LAPLACE CORR    -         -2.60  (seconds)                    DEFLEC18
 JV6043  HORZ ORDER      -  SECOND
 JV6043
 JV6043.The horizontal coordinates were established by classical geodetic methods
 JV6043.and adjusted by the National Geodetic Survey in January 1992.
 JV6043
 JV6043.The orthometric height was scaled from a topographic map.
 JV6043
 JV6043.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6043.GEOID18 height accuracy estimate available here.
 JV6043
 JV6043.Click photographs - Photos may exist for this station.
 JV6043
 JV6043.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6043
 JV6043. The following values were computed from the NAD 83(1991) position.
 JV6043
 JV6043;                    North         East     Units Scale Factor Converg.
 JV6043;SPC MD       -   186,540.423   412,289.597   MT  0.99998361   +0 05 22.1
 JV6043;SPC MD       -   612,008.04  1,352,653.45   sFT  0.99998361   +0 05 22.1
 JV6043;UTM  18      - 4,356,932.326   339,944.958   MT  0.99991542   -1 10 40.4
 JV6043
 JV6043!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6043!SPC MD       -   0.99998091  x   0.99998361  =   0.99996452
 JV6043!UTM  18      -   0.99998091  x   0.99991542  =   0.99989633
 JV6043
 JV6043:                Primary Azimuth Mark                     Grid Az
 JV6043:SPC MD       -  BA 79 W 05 AZ MK 2                       018 11 28.4
 JV6043:UTM  18      -  BA 79 W 05 AZ MK 2                       019 27 30.9
 JV6043
 JV6043_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3994456932(NAD 83)
 JV6043
 JV6043|---------------------------------------------------------------------|
 JV6043| PID    Reference Object                     Distance      Geod. Az  |
 JV6043|                                                           dddmmss.s |
 JV6043| CA9916 BA 79 W 05 RM 1                      86.722 METERS 00444     |
 JV6043| JV6058 BA 79 W 05 AZ MK 2                  APPROX. 0.9 KM 0181650.5 |
 JV6043| CA9915 BA 79 W 05 AZ MK                                   0372641.2 |
 JV6043| JV6050 RANDALLSTOWN MUNICIPAL TANK         APPROX. 5.4 KM 0641412.2 |
 JV6043| JV6039 RANDALLSTOWN RAD WBAL CEN MAST      APPROX. 8.0 KM 0662300.3 |
 JV6043| JV6545 BA 79 W 05 RM 3                      27.334 METERS 08031     |
 JV6043| JV5625 BALTIMORE RADIO STA WITH MAST       APPROX.12.3 KM 1235323.5 |
 JV6043| CA9917 BA 79 W 05 RM 2                      20.333 METERS 15441     |
 JV6043| JV6544 BA 79 W 05 RM 4                      11.496 METERS 16156     |
 JV6043| JV6059 3940001                             363.651 METERS 32904     |
 JV6043|---------------------------------------------------------------------|
 JV6043
 JV6043                          SUPERSEDED SURVEY CONTROL
 JV6043
 JV6043  NAD 83(1986)-  39 20 49.27729(N)    076 51 26.75466(W) AD(       ) 2
 JV6043  NAD 27      -  39 20 48.90040(N)    076 51 27.83020(W) AD(       ) 2
 JV6043
 JV6043.Superseded values are not recommended for survey control.
 JV6043
 JV6043.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6043.See file dsdata.pdf to determine how the superseded data were derived.
 JV6043
 JV6043_MARKER: DS = TRIANGULATION STATION DISK
 JV6043_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6043_STAMPING: BA 79 W 05 1957
 JV6043_MARK LOGO: CGS
 JV6043_PROJECTION: FLUSH
 JV6043_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6043+STABILITY: SURFACE MOTION
 JV6043
 JV6043  HISTORY     - Date     Condition        Report By
 JV6043  HISTORY     - 1957     MONUMENTED       CGS
 JV6043  HISTORY     - 1979     GOOD             NGS
 JV6043  HISTORY     - 19950713 MARK NOT FOUND   USPSQD
 JV6043
 JV6043                          STATION DESCRIPTION
 JV6043
 JV6043'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6043'STATION IS LOCATED ABOUT 13-1/2 MILES WEST NORTHWEST OF
 JV6043'BALTIMORE, 4 MILES WEST SOUTHWEST OF RANDALLSTOWN AND IN THE
 JV6043'VILLAGE OF GRANITE AT NIKE SITE BA 79 W 05.  STATION IS 107 FEET
 JV6043'EAST OF FENCE AND 14 FEET WEST OF THE WEST EDGE OF
 JV6043'SIDEWALK.  THE MARK IS FLUSH WITH THE GROUND AND THE DISK IS
 JV6043'STAMPED BA 79 W 05 1957.
 JV6043'
 JV6043'A TRAVERSE CONNECTION WAS MADE TO REFERENCE MARK NO.1 WHICH
 JV6043'IS SET FLUSH IN CONCRETE THE DISK IS STAMPED BA 79 W 05 NO 1 1957.
 JV6043'
 JV6043'A TRAVERSE CONNECTION WAS MADE TO REFERENCE MARK NO. 2 WHICH
 JV6043'IS SET FLUSH IN CONCRETE THE DISK IS STAMPED BA 79 W 05 NO 2 1957.
 JV6043'
 JV6043'AZIMUTH MARK IS LOCATED IN THE AREA OF NIKE SITE, 74 FEET
 JV6043'EAST OF THE APPROXIMATE CENTER OF GRAVEL STREET, 29 FEET WEST
 JV6043'OF FENCE AND 3 FEET SOUTH OF WITNESS POST.  THE MARK PROJECTS
 JV6043'ABOUT 5 INCHES AND THE DISK IS STAMPED BA 79 W 05 1957.
 JV6043'
 JV6043'TO REACH STATION FROM THE INTERSECTION OF STATE HIGHWAY 26
 JV6043'AND GREEN LANE IN RANDALLSTOWN, ABOUT 11 MILES WEST NORTHWEST
 JV6043'OF DOWNTOWN BALTIMORE, GO SOUTHEAST ON GREEN LANE FOR 0.6 MILE
 JV6043'TO INTERSECTION OF OLD COURT ROAD.  TURN RIGHT AND GO SOUTHWEST
 JV6043'AND WEST ON OLD COURT ROAD FOR 4.0 MILES TO POST OFFICE AND
 JV6043'STORE IN GRANITE.  TURN RIGHT AND GO NORTH FOR 0.25 MILE TO
 JV6043'GATE ON LEFT.  CHECK IN HERE WITH GUARD.  CONTINUE FOR 0.15
 JV6043'MILE TO LOCKED GATE ON LEFT.  PASS THROUGH GATE AND GO 0.05
 JV6043'MILE TO TOP OF GRADE.  BEAR RIGHT ACROSS LAWN AND SIDEWALK
 JV6043'FOR ABOUT 50 YARDS TO STATION AS DESCRIBED.  TO REACH
 JV6043'AZIMUTH MARK FROM GATE CONTINUE FOR 0.5 MILE TO GATE ON
 JV6043'RIGHT AT ENTRANCE.
 JV6043'
 JV6043'PASS THROUGH GATE AND FOLLOW MAIN ROAD EASTERLY FOR 0.25 MILE
 JV6043'TO SIDE ROAD RIGHT.  TURN RIGHT ALONG SOUTH AND THEN EAST OF
 JV6043'LAUNCHING AREA FOR 0.1 MILE TO AZIMUTH MARK ON RIGHT AS
 JV6043'DESCRIBED.
 JV6043'
 JV6043'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV6043
 JV6043                          STATION RECOVERY (1979)
 JV6043
 JV6043'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 JV6043'THE STATION MARK WAS RECOVERED AND FOUND IN GOOD CONDITION.  BOTH
 JV6043'REFERENCE MARKS WERE SEARCHED FOR BUT NOT FOUND.  THE AZIMUTH MARK WAS
 JV6043'FOUND DESTROYED.  TWO NEW REFERENCE MARKS AND A NEW AZIMUTH MARK WAS
 JV6043'ESTABLISHED.
 JV6043'
 JV6043'HOWARD COUNTY MONUMENT 3940001 WAS INTERSECTED FROM THIS STATION,
 JV6043'SEE DESCRIPTION THEREOF.
 JV6043'
 JV6043'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV6043'
 JV6043'THE STATION IS LOCATED ABOUT 13-1/2 MILES WEST-NORTHWEST OF
 JV6043'BALTIMORE, 4 MILES WEST-SOUTHWEST OF RANDALLSTOWN NEAR THE VILLAGE OF
 JV6043'GRANITE.  IT IS ON THE GROUNDS OF A OLD NIKE SITE NUMBER BA 79 W 05.
 JV6043'
 JV6043'TO REACH THE STATION FROM THE POST OFFICE IN WOODSTOCK, GO NORTHEAST
 JV6043'ON WOODSTOCK ROAD FOR 0.65 MILE TO A BRIDGE OVER THE PATAPSCO RIVER.
 JV6043'CONTINUE NORTHEAST ON OLD COURT ROAD (STATE HIGHWAY 125) FOR 1.2
 JV6043'MILES TO A SIDE ROAD LEFT.  TURN LEFT AND GO NORTHERLY ON HERNWOOD
 JV6043'ROAD FOR 0.4 MILE TO A PAVED ROAD ON THE LEFT AT A GATE.  TURN LEFT
 JV6043'AND GO WEST ON THE PAVED ROAD FOR 0.1 MILE TO THE STATION ON THE
 JV6043'RIGHT.  PERMISSION MUST BE OBTAINED FROM THE GUARD GATE TO ENTER THIS
 JV6043'COMPLEX.
 JV6043'
 JV6043'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 JV6043'STAMPED---BA 79 W 05 1957---SET INTO THE TOP OF A SQUARE CONCRETE
 JV6043'MONUMENT 25 CM (10 INCHES) ON SIDE FLUSH WITH THE GROUND LOCATED 31.4
 JV6043'METERS (103 FEET) NW FROM THE NW CORNER OF A STEEL FOUNDATION FOR A
 JV6043'TOWER, 24.4 METERS (80 FEET) NW FROM THE NW CORNER OF THE W ONE OF 2
 JV6043'LARGE ROUND TOWERS, 4.3 METERS (14 FEET) W FROM A SIDEWALK, AND 0.6
 JV6043'METER (2 FEET) E FROM A WITNESS POST.
 JV6043'
 JV6043'REFERENCE MARK NO. 3 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 JV6043'STAMPED---BA 79 W 05 1957 NO 3 1979---SET INTO THE TOP OF A
 JV6043'PARTIALLY EXPOSED BOULDER OF 0.6 METER (2 FEET) LARGEST DIMENSION
 JV6043'LOCATED 28.3 METERS (93 FEET) NW FROM THE MOST NW GUY ANCHOR FOR THE
 JV6043'MOST WESTERLY TOWER, 27.89 METERS (91.5 FEET) E FROM A WITNESS POST,
 JV6043'19.2 METERS (63 FEET) E FROM THE SIDEWALK, 14.6 METERS (48 FEET) NW
 JV6043'FROM THE CENTER OF THE PAVED ROAD, AND 0.3 METER (1 FOOT) HIGHER THAN
 JV6043'THE STATION.
 JV6043'
 JV6043'REFERENCE MARK NO. 4 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 JV6043'STAMPED---BA 79 W 05 1957 NO 4 1979---SET IN A DRILL HOLE IN THE
 JV6043'NORTH EDGE OF A 8-FOOT PAD OF CONCRETE FOR THE MOST NORTHWEST DOUBLE
 JV6043'GUY ANCHOR FOR THE MOST WESTERLY LARGE STEEL OBSERVATION TOWER.  THE
 JV6043'MARK IS LOCATED 13.4 METERS (44 FEET) NW FROM THE NW CORNER OF THE
 JV6043'MOST WESTERLY OBSERVATION TOWER, 11.86 METERS (38.9 FEET) SSE FROM A
 JV6043'WITNESS POST, 1.10 METERS (3.6 FEET) E FROM THE SIDEWALK, 1.5 METERS
 JV6043'(5 FEET) N FROM THE CENTER OF THE DOUBLE GUY ANCHORS, AND 0.3 METER
 JV6043'(1 FOOT) LOWER THAN THE STATION.
 JV6043'
 JV6043'AZIMUTH MARK NO. 2 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 JV6043'STAMPED---BA 79 W 05 1957 AZ 2 1979---SET INTO THE TOP OF A ROUND
 JV6043'CONCRETE MONUMENT 25 CM (10 INCHES) IN DIAMETER FLUSH WITH THE GROUND
 JV6043'LOCATED 35.1 METERS (115 FEET) E FROM THE CENTER OF HERNWOOD ROAD,
 JV6043'11.3 METERS (37 FEET) N FROM THE CENTER OF A GATE AT ENTRANCE TO
 JV6043'COUNTY COMPLEX, 0.79 METER (2.6 FEET) W FROM A WOVEN WIRE FENCE, AND
 JV6043'0.49 METER (1.6 FEET) S FROM A WITNESS POST.
 JV6043'
 JV6043'TO REACH THE AZIMUTH MARK FROM THE STATION, GO EAST ON THE PAVED ROAD
 JV6043'FOR 0.1 MILE TO HERNWOOD ROAD.  TURN LEFT AND GO NORTH ON HERNWOOD
 JV6043'ROAD FOR 0.5 MILE TO A SIDE ROAD RIGHT AT THE ENTRANCE TO THE HOWARD
 JV6043'COUNTY PUBLIC WORKS OFFICE AND THE AZIMUTH MARK JUST NORTH OF THE
 JV6043'GATE AT THE ENTRANCE.
 JV6043
 JV6043                          STATION RECOVERY (1995)
 JV6043
 JV6043'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6043'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6058 ***********************************************************************
 JV6058  DESIGNATION -  BA 79 W 05 AZ MK 2
 JV6058  PID         -  JV6058
 JV6058  STATE/COUNTY-  MD/BALTIMORE
 JV6058  COUNTRY     -  US
 JV6058  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6058
 JV6058                         *CURRENT SURVEY CONTROL
 JV6058  ______________________________________________________________________
 JV6058* NAD 83(2011) POSITION- 39 21 17.29931(N) 076 51 14.82043(W)   ADJUSTED
 JV6058* NAD 83(2011) ELLIP HT-   122.836 (meters)        (06/27/12)   ADJUSTED
 JV6058* NAD 83(2011) EPOCH   -  2010.00
 JV6058* NAVD 88 ORTHO HEIGHT -   154.9   (meters)      508.    (feet) GPS OBS
 JV6058  ______________________________________________________________________
 JV6058  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6058  GEOID HEIGHT    -        -32.974 (meters)                     GEOID93
 JV6058  GEOID HEIGHT    -        -32.091 (meters)                     GEOID18
 JV6058  NAD 83(2011) X  -  1,123,177.821 (meters)                     COMP
 JV6058  NAD 83(2011) Y  - -4,809,120.102 (meters)                     COMP
 JV6058  NAD 83(2011) Z  -  4,022,929.816 (meters)                     COMP
 JV6058  LAPLACE CORR    -         -2.57  (seconds)                    DEFLEC18
 JV6058
 JV6058  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6058  Standards:
 JV6058         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6058            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6058  -------------------------------------------------------------------
 JV6058  NETWORK    0.88   1.84           0.39   0.32   0.94     -0.11868433
 JV6058  -------------------------------------------------------------------
 JV6058  Click here for local accuracies and other accuracy information.
 JV6058
 JV6058.The horizontal coordinates were established by GPS observations
 JV6058.and adjusted by the National Geodetic Survey in June 2012.
 JV6058
 JV6058.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6058.been affixed to the stable North American tectonic plate. See 
 JV6058.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6058
 JV6058.The horizontal coordinates are valid at the epoch date displayed above
 JV6058.which is a decimal equivalence of Year/Month/Day.
 JV6058
 JV6058.The orthometric height was determined by GPS observations and a
 JV6058.high-resolution geoid model.
 JV6058
 JV6058.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6058.GEOID18 height accuracy estimate available here.
 JV6058
 JV6058.Click photographs - Photos may exist for this station.
 JV6058
 JV6058.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6058
 JV6058.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6058
 JV6058.The ellipsoidal height was determined by GPS observations
 JV6058.and is referenced to NAD 83.
 JV6058
 JV6058. The following values were computed from the NAD 83(2011) position.
 JV6058
 JV6058;                    North         East     Units Scale Factor Converg.
 JV6058;SPC MD       -   187,404.977   412,573.784   MT  0.99998473   +0 05 29.6
 JV6058;SPC MD       -   614,844.50  1,353,585.82   sFT  0.99998473   +0 05 29.6
 JV6058;UTM  18      - 4,357,790.322   340,248.177   MT  0.99991423   -1 10 33.5
 JV6058
 JV6058!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6058!SPC MD       -   0.99998073  x   0.99998473  =   0.99996546
 JV6058!UTM  18      -   0.99998073  x   0.99991423  =   0.99989496
 JV6058
 JV6058:                Primary Azimuth Mark                     Grid Az
 JV6058:SPC MD       -  BA 79 W 05                               198 11 28.5
 JV6058:UTM  18      -  BA 79 W 05                               199 27 31.6
 JV6058
 JV6058_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4024857790(NAD 83)
 JV6058
 JV6058|---------------------------------------------------------------------|
 JV6058| PID    Reference Object                     Distance      Geod. Az  |
 JV6058|                                                           dddmmss.s |
 JV6058| JV6043 BA 79 W 05                          APPROX. 0.9 KM 1981658.1 |
 JV6058|---------------------------------------------------------------------|
 JV6058
 JV6058                          SUPERSEDED SURVEY CONTROL
 JV6058
 JV6058  NAD 83(2007)-  39 21 17.29927(N)    076 51 14.82121(W) AD(2002.00) 0
 JV6058  ELLIP H (02/10/07)  122.853  (m)                       GP(2002.00)    
 JV6058  ELLIP H (08/30/02)  122.871  (m)                       GP(       ) 4 2
 JV6058  NAD 83(1991)-  39 21 17.29822(N)    076 51 14.82126(W) AD(       ) 1
 JV6058  ELLIP H (02/23/93)  122.797  (m)                       GP(       ) 4 2
 JV6058  NAD 83(1991)-  39 21 17.29992(N)    076 51 14.82386(W) AD(       ) 3
 JV6058  NAD 83(1986)-  39 21 17.29758(N)    076 51 14.83168(W) AD(       ) 3
 JV6058  NAD 27      -  39 21 16.92113(N)    076 51 15.90734(W) AD(       ) 3
 JV6058  NGVD 29 (02/23/93)  155.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6058  NGVD 29 (07/19/86)  157.     (m)          515.     (f) VERT ANG       
 JV6058
 JV6058.Superseded values are not recommended for survey control.
 JV6058
 JV6058.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6058.See file dsdata.pdf to determine how the superseded data were derived.
 JV6058
 JV6058_MARKER: DZ = AZIMUTH MARK DISK
 JV6058_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6058_STAMPING: BA 79 W 05 AZ 2 1979
 JV6058_MARK LOGO: NGS
 JV6058_PROJECTION: FLUSH
 JV6058_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6058+STABILITY: SURFACE MOTION
 JV6058_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6058+SATELLITE: SATELLITE OBSERVATIONS - July 16, 2020
 JV6058
 JV6058  HISTORY     - Date     Condition        Report By
 JV6058  HISTORY     - 1979     MONUMENTED       NGS
 JV6058  HISTORY     - 19901125 GOOD             MD-027
 JV6058  HISTORY     - 19910528 GOOD
 JV6058  HISTORY     - 19950223 GOOD             MCCRON
 JV6058  HISTORY     - 20200716 GOOD             MD-005
 JV6058
 JV6058                          STATION DESCRIPTION
 JV6058
 JV6058'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV6058'RECOVERED IN GOOD CONDITION.
 JV6058
 JV6058                          STATION RECOVERY (1991)
 JV6058
 JV6058'RECOVERED 1991
 JV6058'RECOVERED IN GOOD CONDITION.
 JV6058
 JV6058                          STATION RECOVERY (1995)
 JV6058
 JV6058'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6058'RECOVERED AS DESCRIBED.
 JV6058
 JV6058                          STATION RECOVERY (2020)
 JV6058
 JV6058'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (JMS)
 JV6058'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6545 ***********************************************************************
 JV6545  DESIGNATION -  BA 79 W 05 RM 3
 JV6545  PID         -  JV6545
 JV6545  STATE/COUNTY-  MD/BALTIMORE
 JV6545  COUNTRY     -  US
 JV6545  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6545
 JV6545                         *CURRENT SURVEY CONTROL
 JV6545  ______________________________________________________________________
 JV6545* NAD 83(1986) POSITION- 39 20 49.43   (N) 076 51 25.62   (W)   HD_HELD1
 JV6545* NAVD 88 ORTHO HEIGHT -   152.13  (meters)      499.1   (feet) RESET
 JV6545  ______________________________________________________________________
 JV6545  GEOID HEIGHT    -        -32.091 (meters)                     GEOID18
 JV6545  VERT ORDER      -  THIRD
 JV6545
 JV6545.The horizontal coordinates were determined by differentially corrected
 JV6545.hand held GPS observations or other comparable positioning techniques
 JV6545.and have an estimated accuracy of +/- 3 meters.
 JV6545
 JV6545.The orthometric height was computed from unverified reset data.
 JV6545
 JV6545.No vertical observational check was made to the station.
 JV6545
 JV6545.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6545.GEOID18 height accuracy estimate available here.
 JV6545
 JV6545.Click photographs - Photos may exist for this station.
 JV6545
 JV6545;                    North         East    Units  Estimated Accuracy
 JV6545;SPC MD       -   186,545.1     412,316.6     MT  (+/- 3 meters HH1 GPS) 
 JV6545
 JV6545_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3997256936(NAD 83)
 JV6545
 JV6545                          SUPERSEDED SURVEY CONTROL
 JV6545
 JV6545  NGVD 29 (11/18/05)  152.35   (m)          499.8    (f) RESET       3  
 JV6545
 JV6545.Superseded values are not recommended for survey control.
 JV6545
 JV6545.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6545.See file dsdata.pdf to determine how the superseded data were derived.
 JV6545
 JV6545_MARKER: DR = REFERENCE MARK DISK
 JV6545_SETTING: 80 = SET IN A BOULDER
 JV6545_STAMPING: BA 79 W 05 1957 NO 3 1979
 JV6545_MARK LOGO: NGS
 JV6545_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6545+STABILITY: SURFACE MOTION
 JV6545
 JV6545  HISTORY     - Date     Condition        Report By
 JV6545  HISTORY     - 1979     MONUMENTED       NGS
 JV6545
 JV6545                          STATION DESCRIPTION
 JV6545
 JV6545'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV6545'3.2 KM (2.00 MI) NE FROM WOODSTOCK.
 JV6545'FROM THE POST OFFICE IN WOODSTOCK, GO NORTHEAST ON WOODSTOCK ROAD FOR
 JV6545'0.65 MILE TO A BRIDGE OVER THE PATAPSCO RIVER.  CONTINUE NORTHEAST ON
 JV6545'OLD COURT ROAD FOR 1.2 MILES TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 JV6545'NORTHERLY ON HERNWOOD ROAD FOR 0.4 MILE TO A SIDE ROAD LEFT AND A
 JV6545'GATE ON THE LEFT.  TURN LEFT, PASS THROUGH THE GATE AND GO WEST ON
 JV6545'THE PAVED ROAD FOR 0.1 MILE TO THE MARK ON THE RIGHT, 93 FEET
 JV6545'NORTHWEST OF THE MOST NORTHWEST GUY ANCHOR FOR THE MOST WEST ONE OF
 JV6545'TWO ROUND STEEL TOWERS, 63 FEET EAST OF A SIDEWALK AND 48 FEET
 JV6545'NORTHWEST OF THE CENTER OF THE ROAD.
 JV6545'THE MARK IS 91.5 METERS  E FROM  A WITNESS POST
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6544 ***********************************************************************
 JV6544  DESIGNATION -  BA 79 W 05 RM 4
 JV6544  PID         -  JV6544
 JV6544  STATE/COUNTY-  MD/BALTIMORE
 JV6544  COUNTRY     -  US
 JV6544  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6544
 JV6544                         *CURRENT SURVEY CONTROL
 JV6544  ______________________________________________________________________
 JV6544* NAD 83(1986) POSITION- 39 20 48.93   (N) 076 51 26.60   (W)   HD_HELD1
 JV6544* NAVD 88 ORTHO HEIGHT -   152.18  (meters)      499.3   (feet) RESET
 JV6544  ______________________________________________________________________
 JV6544  GEOID HEIGHT    -        -32.091 (meters)                     GEOID18
 JV6544  VERT ORDER      -  THIRD
 JV6544
 JV6544.The horizontal coordinates were determined by differentially corrected
 JV6544.hand held GPS observations or other comparable positioning techniques
 JV6544.and have an estimated accuracy of +/- 3 meters.
 JV6544
 JV6544.The orthometric height was computed from unverified reset data.
 JV6544
 JV6544.No vertical observational check was made to the station.
 JV6544
 JV6544.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6544.GEOID18 height accuracy estimate available here.
 JV6544
 JV6544.Click photographs - Photos may exist for this station.
 JV6544
 JV6544;                    North         East    Units  Estimated Accuracy
 JV6544;SPC MD       -   186,529.7     412,293.1     MT  (+/- 3 meters HH1 GPS) 
 JV6544
 JV6544_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3994856921(NAD 83)
 JV6544
 JV6544                          SUPERSEDED SURVEY CONTROL
 JV6544
 JV6544  NGVD 29 (11/18/05)  152.39   (m)          500.0    (f) RESET       3  
 JV6544
 JV6544.Superseded values are not recommended for survey control.
 JV6544
 JV6544.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6544.See file dsdata.pdf to determine how the superseded data were derived.
 JV6544
 JV6544_MARKER: DR = REFERENCE MARK DISK
 JV6544_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV6544+WITH SETTING: PAVEMENT
 JV6544_SP_SET: GUY ANCHOR PAD
 JV6544_STAMPING: BA 79 W 05 1957 NO 4 1979
 JV6544_MARK LOGO: NGS
 JV6544_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6544+STABILITY: SURFACE MOTION
 JV6544
 JV6544  HISTORY     - Date     Condition        Report By
 JV6544  HISTORY     - 1979     MONUMENTED       NGS
 JV6544
 JV6544                          STATION DESCRIPTION
 JV6544
 JV6544'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV6544'3.2 KM (2.00 MI) NE FROM WOODSTOCK.
 JV6544'FROM THE POST OFFICE IN WOODSTOCK, GO NORTHEAST ON WOODSTOCK ROAD FOR
 JV6544'0.65 MILE TO A BRIDGE OVER THE PATAPSCO RIVER.  CONTINUE NORTHEAST ON
 JV6544'OLD COURT ROAD FOR 1.2 MILES TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 JV6544'NORTHERLY ON HERNWOOD ROAD FOR 0.4 MILE TO A GATE ON THE LEFT AND A
 JV6544'PAVED ROAD ON THE LEFT.  TURN LEFT, PASS THROUGH THE GATE AND GO WEST
 JV6544'ON THE PAVED ROAD FOR 0.1 MILE TO THE MARK ON THE RIGHT.  IT IS 44
 JV6544'FEET NORTHWEST OF THE NORTHWEST CORNER OF THE MOST WESTERLY TOWER, 5
 JV6544'FEET NORTH OF THE CENTER OF A DOUBLE ANCHOR GUY AND 3.6 FEET EAST OF
 JV6544'THE SIDEWALK.
 JV6544'THE MARK IS 38.9 METERS  SSE FROM  A WITNESS POST
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5647 ***********************************************************************
 JV5647  DESIGNATION -  BA 92
 JV5647  PID         -  JV5647
 JV5647  STATE/COUNTY-  MD/BALTIMORE
 JV5647  COUNTRY     -  US
 JV5647  USGS QUAD   -  COCKEYSVILLE (2016)
 JV5647
 JV5647                         *CURRENT SURVEY CONTROL
 JV5647  ______________________________________________________________________
 JV5647* NAD 83(1991) POSITION- 39 27 17.69475(N) 076 43 47.98197(W)   ADJUSTED
 JV5647* NAVD 88 ORTHO HEIGHT -   203.    (meters)      666.    (feet) SCALED
 JV5647  ______________________________________________________________________
 JV5647  GEOID HEIGHT    -        -32.224 (meters)                     GEOID18
 JV5647  LAPLACE CORR    -         -3.52  (seconds)                    DEFLEC18
 JV5647  HORZ ORDER      -  THIRD
 JV5647
 JV5647.The horizontal coordinates were established by classical geodetic methods
 JV5647.and adjusted by the National Geodetic Survey in January 1992.
 JV5647
 JV5647.The orthometric height was scaled from a topographic map.
 JV5647
 JV5647.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5647.GEOID18 height accuracy estimate available here.
 JV5647
 JV5647.Click photographs - Photos may exist for this station.
 JV5647
 JV5647.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5647
 JV5647. The following values were computed from the NAD 83(1991) position.
 JV5647
 JV5647;                    North         East     Units Scale Factor Converg.
 JV5647;SPC MD       -   198,543.732   423,239.037   MT  1.00000086   +0 10 10.1
 JV5647;SPC MD       -   651,388.89  1,388,576.74   sFT  1.00000086   +0 10 10.1
 JV5647;UTM  18      - 4,368,689.196   351,156.284   MT  0.99987277   -1 05 58.4
 JV5647
 JV5647!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5647!SPC MD       -   0.99997324  x   1.00000086  =   0.99997410
 JV5647!UTM  18      -   0.99997324  x   0.99987277  =   0.99984601
 JV5647
 JV5647:                Primary Azimuth Mark                     Grid Az
 JV5647:SPC MD       -  BA 92 AZ MK                              058 53 25.0
 JV5647:UTM  18      -  BA 92 AZ MK                              060 09 33.5
 JV5647
 JV5647_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5115668689(NAD 83)
 JV5647
 JV5647|---------------------------------------------------------------------|
 JV5647| PID    Reference Object                     Distance      Geod. Az  |
 JV5647|                                                           dddmmss.s |
 JV5647| CA9919 BA 92 RM 1                           26.380 METERS 04917     |
 JV5647| CA9918 BA 92 AZ MK                                        0590335.1 |
 JV5647| JV5654 MAYS CHAPEL BALTIMORE GAS MAST      APPROX. 5.3 KM 0900358.5 |
 JV5647| JV5496 BALTIMORE TV STATION WMAR MAST      APPROX.20.9 KM 1512732.6 |
 JV5647| JV5646 BALTIMORE RADIO WCAO N MAST         APPROX. 7.4 KM 1733308.0 |
 JV5647| JV6039 RANDALLSTOWN RAD WBAL CEN MAST      APPROX. 9.5 KM 2023449.1 |
 JV5647| CA9920 BA 92 RM 2                           14.587 METERS 31049     |
 JV5647|---------------------------------------------------------------------|
 JV5647
 JV5647                          SUPERSEDED SURVEY CONTROL
 JV5647
 JV5647  NAD 83(1986)-  39 27 17.69196(N)    076 43 47.98885(W) AD(       ) 3
 JV5647  NAD 27      -  39 27 17.31040(N)    076 43 49.07790(W) AD(       ) 3
 JV5647
 JV5647.Superseded values are not recommended for survey control.
 JV5647
 JV5647.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5647.See file dsdata.pdf to determine how the superseded data were derived.
 JV5647
 JV5647_MARKER: DS = TRIANGULATION STATION DISK
 JV5647_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5647_STAMPING: BA 92 1957
 JV5647_MARK LOGO: CGS
 JV5647_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5647+STABILITY: SURFACE MOTION
 JV5647
 JV5647  HISTORY     - Date     Condition        Report By
 JV5647  HISTORY     - 1957     MONUMENTED       CGS
 JV5647
 JV5647                          STATION DESCRIPTION
 JV5647
 JV5647'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5647'STATION IS LOCATED AT U.S. ARMY NIKE SITE BA 92 ABOUT 12-1/2 MILES
 JV5647'NORTH-NORTHWEST OF THE CENTER OF BALTIMORE, ABOUT 5.0 MILES
 JV5647'NORTH OF PIKESVILLE AND ABOUT 5-1/2 MILES EAST-SOUTHEAST OF
 JV5647'REISTERTOWN.  STATION IS 39-1/2 FEET EAST OF SOUTHEAST CORNER AND
 JV5647'27 FEET NORTH OF FENCE.  THE MARK IS SET FLUSH AND THE DISK IS
 JV5647'STAMPED BA 92 1957.
 JV5647'
 JV5647'REFERENCE MARK NO. 1 IS SET IN A DRILL HOLE IN THE SOUTHEAST
 JV5647'CORNER OF CONCRETE PAD AND 5 FEET NORTHEAST OF SOUTHEAST CORNER
 JV5647'OF BUILDING.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED
 JV5647'BA 92 NO 1 1957.
 JV5647'
 JV5647'REFERENCE MARK NO. 2 IS SET IN DRILL HOLE IN CONCRETE PAD AND
 JV5647'ATOP A 25 FOOT TOWER.  THE MARK IS SET FLUSH AND THE DISK IS
 JV5647'STAMPED BA 92 NO 2 1957.
 JV5647'
 JV5647'AZIMUTH MARK IS SET AT LAUNCHING SITE 47 FEET SOUTHWEST OF
 JV5647'APPROXIMATE CENTERLINE OF ROAD, 7 FEET WEST-NORTHWEST OF POWERLINE
 JV5647'POLE AND 2-1/2 FEET SOUTHWEST OF WITNESS POST.  THE MARK PROJECTS
 JV5647'6 INCHES AND THE DISK IS STAMPED BA 92 1957.
 JV5647'
 JV5647'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 140 AND STATE
 JV5647'HIGHWAY NO. 130 IN THE VILLAGE OF GARRISON, GO EAST ON STATE
 JV5647'HIGHWAY NO. 130 FOR 1.75 MILE TO JUNCTION OF STATE HIGHWAY
 JV5647'NO. 129.  TURN LEFT AND GO NORTH ON STATE HIGHWAY NO. 129 FOR
 JV5647'2.0 MILES TO CROSSROADS.  TURN RIGHT AND GO EAST ON COVES ROAD
 JV5647'FOR 0.95 MILE TO T INTERSECTION AT TOP OF HILL.  TURN LEFT AND GO
 JV5647'NORTH FOR 0.5 MILE TO GUARD GATE AT NIKE SITE ON LEFT (WEST)
 JV5647'SIDE OF ROAD.  TURN LEFT, PASS THROUGH GATE, THENCE RIGHT AND GO
 JV5647'TO END OF ROAD AND STATION AS DESCRIBED.
 JV5647'
 JV5647'TO REACH AZIMUTH MARK FROM GUARD GATE, GO NORTH ON SURFACED ROAD
 JV5647'FOR 0.15 MILE TO INTERSECTION.  TURN RIGHT AND GO EASTERLY ON
 JV5647'RIDGE ROAD FOR 0.5 MILE TO GUARD GATE.  PASS THROUGH GATE AND
 JV5647'CONTINUE STRAIGHT AHEAD FOR 0.1 MILE TO AZIMUTH MARK ON RIGHT
 JV5647'(SOUTHWEST) SIDE OF ROAD AS DESCRIBED.
 JV5647'
 JV5647'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6046 ***********************************************************************
 HV6046  DESIGNATION -  BACH
 HV6046  PID         -  HV6046
 HV6046  STATE/COUNTY-  MD/TALBOT
 HV6046  COUNTRY     -  US
 HV6046  USGS QUAD   -  OXFORD (2016)
 HV6046
 HV6046                         *CURRENT SURVEY CONTROL
 HV6046  ______________________________________________________________________
 HV6046* NAD 83(1991) POSITION- 38 40 32.39538(N) 076 10 36.93183(W)   ADJUSTED
 HV6046* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6046  ______________________________________________________________________
 HV6046  GEOID HEIGHT    -        -34.651 (meters)                     GEOID18
 HV6046  LAPLACE CORR    -         -4.11  (seconds)                    DEFLEC18
 HV6046  HORZ ORDER      -  THIRD
 HV6046
 HV6046.The horizontal coordinates were established by classical geodetic methods
 HV6046.and adjusted by the National Geodetic Survey in January 1992.
 HV6046
 HV6046.The orthometric height was scaled from a topographic map.
 HV6046
 HV6046.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6046.GEOID18 height accuracy estimate available here.
 HV6046
 HV6046.Click photographs - Photos may exist for this station.
 HV6046
 HV6046.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6046
 HV6046. The following values were computed from the NAD 83(1991) position.
 HV6046
 HV6046;                    North         East     Units Scale Factor Converg.
 HV6046;SPC MD       -   112,325.670   471,620.218   MT  0.99995592   +0 30 59.7
 HV6046;SPC MD       -   368,521.80  1,547,307.33   sFT  0.99995592   +0 30 59.7
 HV6046;UTM  18      - 4,281,442.956   397,622.738   MT  0.99972907   -0 44 07.9
 HV6046
 HV6046!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6046!SPC MD       -   1.00000547  x   0.99995592  =   0.99996139
 HV6046!UTM  18      -   1.00000547  x   0.99972907  =   0.99973454
 HV6046
 HV6046:                Primary Azimuth Mark                     Grid Az
 HV6046:SPC MD       -  BOONE                                    145 57 49.4
 HV6046:UTM  18      -  BOONE                                    147 12 57.0
 HV6046
 HV6046_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9762281442(NAD 83)
 HV6046
 HV6046|---------------------------------------------------------------------|
 HV6046| PID    Reference Object                     Distance      Geod. Az  |
 HV6046|                                                           dddmmss.s |
 HV6046| HV6034 BOONE                               APPROX. 0.7 KM 1462849.1 |
 HV6046|---------------------------------------------------------------------|
 HV6046
 HV6046                          SUPERSEDED SURVEY CONTROL
 HV6046
 HV6046  NAD 83(1986)-  38 40 32.39204(N)    076 10 36.94754(W) AD(       ) 3
 HV6046  NAD 27      -  38 40 31.95900(N)    076 10 38.16300(W) AD(       ) 3
 HV6046  USSD        -  38 40 32.35000(N)    076 10 37.96800(W) AD(       ) 3
 HV6046
 HV6046.Superseded values are not recommended for survey control.
 HV6046
 HV6046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6046.See file dsdata.pdf to determine how the superseded data were derived.
 HV6046
 HV6046_MARKER: H = DRILL HOLE
 HV6046_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6046_PROJECTION: PROJECTING 10 CENTIMETERS
 HV6046_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6046
 HV6046  HISTORY     - Date     Condition        Report By
 HV6046  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6046  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6046
 HV6046                          STATION DESCRIPTION
 HV6046
 HV6046'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6046'ON THE EASTERN SHORE OF ENTRANCE TO TRED AVON RIVER, ON BACHELOR
 HV6046'POINT, ABOUT 1-3/8 MILES NNE OF CHOPTANK RIVER LIGHT, IN A
 HV6046'CULTIVATED FIELD ABOUT 6 FEET ABOVE HIGH WATER, 30 YARDS E OF
 HV6046'EDGE OF BANK, 70 YARDS NNE OF EDGE OF BANK ON RANGE WITH CHOPTANK
 HV6046'RIVER LIGHT, AND 100 YARDS S BY W OF EDGE OF BANK OF TREES.
 HV6046'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6046'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6046'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6046'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE
 HV6046'MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP
 HV6046'2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS
 HV6046'TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--TANGENT OF BENONI
 HV6046'POINT, 1 1/4 MILES, S 72 DEG 28 MIN W. LEFT PEAK OF ROOF OF HOUSE,
 HV6046'1-5/8 MILES, N 15 DEG 36 MIN W.  LEFT CORNER OF BURNT HOUSE, 1-1/8
 HV6046'MILES, N 3 DEG 4 MIN E.  RIGHT CORNER OF HOUSE, 1/4 MILE, N 48
 HV6046'DEG 34 MIN E.  LEFT CORNER ON LEFT CHIMNEY ON VERY LARGE HOUSE,
 HV6046'5/8 MILE, N 77 DEG 45 MIN E.
 HV6046
 HV6046                          STATION RECOVERY (1940)
 HV6046
 HV6046'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6046'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  OLD OYSTERMAN AND
 HV6046'LIFELONG RESIDENT OF VICINITY, WHO WORKED FOR ORIGINAL SURVEY
 HV6046'PARTY, STATES THAT BACHELOR POINT HAS WASHED AWAY AT VERY RAPID
 HV6046'RATE UNTIL SEVERAL YEARS AGO, WHEN STONE RIPRAP WAS PUT DOWN.
 HV6046'MONUMENT WAS WASHED OUT AND CARRIED AWAY BY NATIVE FOR USE AS DOOR
 HV6046'STEP.  THIS INFORMATION CONFIRMED FROM SEVERAL OTHER LOCAL SOURCES.
 HV6046'
 HV6046'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4667 ***********************************************************************
 AB4667  DESIGNATION -  BACH
 AB4667  PID         -  AB4667
 AB4667  STATE/COUNTY-  MD/CARROLL
 AB4667  COUNTRY     -  US
 AB4667  USGS QUAD   -  MANCHESTER (2016)
 AB4667
 AB4667                         *CURRENT SURVEY CONTROL
 AB4667  ______________________________________________________________________
 AB4667* NAD 83(2011) POSITION- 39 38 52.18319(N) 076 57 42.04629(W)   ADJUSTED
 AB4667* NAD 83(2011) ELLIP HT-   170.995 (meters)        (06/27/12)   ADJUSTED
 AB4667* NAD 83(2011) EPOCH   -  2010.00
 AB4667* NAVD 88 ORTHO HEIGHT -   203.4   (meters)      667.    (feet) GPS OBS
 AB4667  ______________________________________________________________________
 AB4667  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4667  GEOID HEIGHT    -        -32.417 (meters)                     GEOID99
 AB4667  GEOID HEIGHT    -        -32.405 (meters)                     GEOID18
 AB4667  NAD 83(2011) X  -  1,109,487.215 (meters)                     COMP
 AB4667  NAD 83(2011) Y  - -4,791,095.392 (meters)                     COMP
 AB4667  NAD 83(2011) Z  -  4,048,063.735 (meters)                     COMP
 AB4667  LAPLACE CORR    -          3.99  (seconds)                    DEFLEC18
 AB4667
 AB4667  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4667  Standards:
 AB4667         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4667            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4667  -------------------------------------------------------------------
 AB4667  NETWORK    1.02   4.27           0.44   0.39   2.18      0.05072054
 AB4667  -------------------------------------------------------------------
 AB4667  Click here for local accuracies and other accuracy information.
 AB4667
 AB4667.The horizontal coordinates were established by GPS observations
 AB4667.and adjusted by the National Geodetic Survey in June 2012.
 AB4667
 AB4667.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4667.been affixed to the stable North American tectonic plate. See 
 AB4667.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4667
 AB4667.The horizontal coordinates are valid at the epoch date displayed above
 AB4667.which is a decimal equivalence of Year/Month/Day.
 AB4667
 AB4667.The orthometric height was determined by GPS observations and a
 AB4667.high-resolution geoid model.
 AB4667
 AB4667.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4667.GEOID18 height accuracy estimate available here.
 AB4667
 AB4667.Click photographs - Photos may exist for this station.
 AB4667
 AB4667.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4667
 AB4667.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4667
 AB4667.The ellipsoidal height was determined by GPS observations
 AB4667.and is referenced to NAD 83.
 AB4667
 AB4667. The following values were computed from the NAD 83(2011) position.
 AB4667
 AB4667;                    North         East     Units Scale Factor Converg.
 AB4667;SPC MD       -   219,928.892   403,289.215   MT  1.00004060   +0 01 26.6
 AB4667;SPC MD       -   721,550.04  1,323,124.70   sFT  1.00004060   +0 01 26.6
 AB4667;UTM  18      - 4,390,509.698   331,688.403   MT  0.99994878   -1 15 07.1
 AB4667
 AB4667!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4667!SPC MD       -   0.99997317  x   1.00004060  =   1.00001377
 AB4667!UTM  18      -   0.99997317  x   0.99994878  =   0.99992196
 AB4667
 AB4667:                Primary Azimuth Mark                     Grid Az
 AB4667:SPC MD       -  BACH AZ MK                               203 39 56.5
 AB4667:UTM  18      -  BACH AZ MK                               204 56 30.2
 AB4667
 AB4667_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3168890509(NAD 83)
 AB4667
 AB4667|---------------------------------------------------------------------|
 AB4667| PID    Reference Object                     Distance      Geod. Az  |
 AB4667|                                                           dddmmss.s |
 AB4667| AB4753 BACH AZ MK                          APPROX. 0.6 KM 2034123.1 |
 AB4667|---------------------------------------------------------------------|
 AB4667
 AB4667                          SUPERSEDED SURVEY CONTROL
 AB4667
 AB4667  NAD 83(2007)-  39 38 52.18343(N)    076 57 42.04701(W) AD(2002.00) 0
 AB4667  ELLIP H (02/10/07)  171.014  (m)                       GP(2002.00)    
 AB4667  ELLIP H (08/30/02)  171.011  (m)                       GP(       ) 4 2
 AB4667  NAD 83(1991)-  39 38 52.18289(N)    076 57 42.04767(W) AD(       ) 1
 AB4667  ELLIP H (07/03/96)  170.955  (m)                       GP(       ) 1 1
 AB4667  NAVD 88 (07/03/96)  203.4    (m)  GEOID93  model used  GPS OBS        
 AB4667
 AB4667.Superseded values are not recommended for survey control.
 AB4667
 AB4667.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4667.See file dsdata.pdf to determine how the superseded data were derived.
 AB4667
 AB4667_MARKER: DD = SURVEY DISK
 AB4667_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4667_STAMPING: BACH 1995
 AB4667_MARK LOGO: MD-013
 AB4667_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4667_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4667+STABILITY: SURFACE MOTION
 AB4667_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4667+SATELLITE: SATELLITE OBSERVATIONS - August 20, 2008
 AB4667
 AB4667  HISTORY     - Date     Condition        Report By
 AB4667  HISTORY     - 1995     MONUMENTED       MD-013
 AB4667  HISTORY     - 20080324 GOOD             GPSSS
 AB4667  HISTORY     - 20080820 GOOD             MDSHA
 AB4667
 AB4667                          STATION DESCRIPTION
 AB4667
 AB4667'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4667'STATION IS LOCATED ABOUT 5 MI (8.0 KM) NORTH OF WESTMINSTER AND ABOUT
 AB4667'4.5 MI (7.2 KM) WEST OF MANCHESTER. TO REACH STATION FROM THE
 AB4667'INTERSECTION OF MD ROUTE 27 (MANCHESTER ROAD) AND MD ROUTE 496
 AB4667'(BACHMAN VALLEY ROAD) GO NORTHEAST ON MD ROUTE 496 FOR 3.05 MI (4.91
 AB4667'KM) TO THE INTERSECTION WITH OLD BACHMAN VALLEY ROAD. TURN RIGHT AND
 AB4667'GO SOUTH ON OLD BACHMAN VALLEY ROAD FOR 0.65 MI (1.05 KM) TO THE
 AB4667'STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4667'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 16.5 FT
 AB4667'(5.0 M) WEST OF THE CENTERLINE OF THE ROAD, 21.6 FT (6.6 M) NORTH OF A
 AB4667'TELEPHONE PEDESTAL AND 158 FT (48.2 M) SOUTH OF THE WEST END OF A 24
 AB4667'IN C.M.P. UNDER THE ROAD.
 AB4667
 AB4667                          STATION RECOVERY (2008)
 AB4667
 AB4667'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (DA)
 AB4667'RECOVERED BY DALE ADAMS OF CLSI, FREDERICK OFFICE.
 AB4667
 AB4667                          STATION RECOVERY (2008)
 AB4667
 AB4667'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 AB4667'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4753 ***********************************************************************
 AB4753  DESIGNATION -  BACH AZ MK
 AB4753  PID         -  AB4753
 AB4753  STATE/COUNTY-  MD/CARROLL
 AB4753  COUNTRY     -  US
 AB4753  USGS QUAD   -  MANCHESTER (2016)
 AB4753
 AB4753                         *CURRENT SURVEY CONTROL
 AB4753  ______________________________________________________________________
 AB4753* NAD 83(2011) POSITION- 39 38 35.72299(N) 076 57 51.38775(W)   ADJUSTED
 AB4753* NAD 83(2011) ELLIP HT-   183.708 (meters)        (06/27/12)   ADJUSTED
 AB4753* NAD 83(2011) EPOCH   -  2010.00
 AB4753* NAVD 88 ORTHO HEIGHT -   216.1   (meters)      709.    (feet) GPS OBS
 AB4753  ______________________________________________________________________
 AB4753  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4753  GEOID HEIGHT    -        -32.407 (meters)                     GEOID99
 AB4753  GEOID HEIGHT    -        -32.394 (meters)                     GEOID18
 AB4753  NAD 83(2011) X  -  1,109,345.500 (meters)                     COMP
 AB4753  NAD 83(2011) Y  - -4,791,470.732 (meters)                     COMP
 AB4753  NAD 83(2011) Z  -  4,047,680.942 (meters)                     COMP
 AB4753  LAPLACE CORR    -          4.04  (seconds)                    DEFLEC18
 AB4753
 AB4753  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4753  Standards:
 AB4753         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4753            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4753  -------------------------------------------------------------------
 AB4753  NETWORK    1.10   4.45           0.48   0.42   2.27     -0.04391665
 AB4753  -------------------------------------------------------------------
 AB4753  Click here for local accuracies and other accuracy information.
 AB4753
 AB4753.The horizontal coordinates were established by GPS observations
 AB4753.and adjusted by the National Geodetic Survey in June 2012.
 AB4753
 AB4753.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4753.been affixed to the stable North American tectonic plate. See 
 AB4753.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4753
 AB4753.The horizontal coordinates are valid at the epoch date displayed above
 AB4753.which is a decimal equivalence of Year/Month/Day.
 AB4753
 AB4753.The orthometric height was determined by GPS observations and a
 AB4753.high-resolution geoid model.
 AB4753
 AB4753.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4753.GEOID18 height accuracy estimate available here.
 AB4753
 AB4753.Click photographs - Photos may exist for this station.
 AB4753
 AB4753.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4753
 AB4753.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4753
 AB4753.The ellipsoidal height was determined by GPS observations
 AB4753.and is referenced to NAD 83.
 AB4753
 AB4753. The following values were computed from the NAD 83(2011) position.
 AB4753
 AB4753;                    North         East     Units Scale Factor Converg.
 AB4753;SPC MD       -   219,421.132   403,066.686   MT  1.00003953   +0 01 20.7
 AB4753;SPC MD       -   719,884.16  1,322,394.62   sFT  1.00003953   +0 01 20.7
 AB4753;UTM  18      - 4,390,007.064   331,454.643   MT  0.99994975   -1 15 12.6
 AB4753
 AB4753!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4753!SPC MD       -   0.99997118  x   1.00003953  =   1.00001071
 AB4753!UTM  18      -   0.99997118  x   0.99994975  =   0.99992093
 AB4753
 AB4753:                Primary Azimuth Mark                     Grid Az
 AB4753:SPC MD       -  BACH                                     023 39 56.4
 AB4753:UTM  18      -  BACH                                     024 56 29.7
 AB4753
 AB4753_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3145490007(NAD 83)
 AB4753
 AB4753|---------------------------------------------------------------------|
 AB4753| PID    Reference Object                     Distance      Geod. Az  |
 AB4753|                                                           dddmmss.s |
 AB4753| AB4667 BACH                                APPROX. 0.6 KM 0234117.1 |
 AB4753|---------------------------------------------------------------------|
 AB4753
 AB4753                          SUPERSEDED SURVEY CONTROL
 AB4753
 AB4753  NAD 83(2007)-  39 38 35.72323(N)    076 57 51.38849(W) AD(2002.00) 0
 AB4753  ELLIP H (02/10/07)  183.727  (m)                       GP(2002.00)    
 AB4753  ELLIP H (08/30/02)  183.726  (m)                       GP(       ) 4 2
 AB4753  NAD 83(1991)-  39 38 35.72268(N)    076 57 51.38917(W) AD(       ) 1
 AB4753  ELLIP H (07/03/96)  183.668  (m)                       GP(       ) 1 1
 AB4753  NAVD 88 (07/03/96)  216.1    (m)  GEOID93  model used  GPS OBS        
 AB4753
 AB4753.Superseded values are not recommended for survey control.
 AB4753
 AB4753.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4753.See file dsdata.pdf to determine how the superseded data were derived.
 AB4753
 AB4753_MARKER: DD = SURVEY DISK
 AB4753_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4753_STAMPING: BACH AZI 1995
 AB4753_MARK LOGO: MD-013
 AB4753_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4753_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4753+STABILITY: SURFACE MOTION
 AB4753_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4753+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4753
 AB4753  HISTORY     - Date     Condition        Report By
 AB4753  HISTORY     - 1995     MONUMENTED       MD-013
 AB4753
 AB4753                          STATION DESCRIPTION
 AB4753
 AB4753'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4753'STATION IS LOCATED ABOUT 4 MI (6.4 KM) NORTHEAST OF WESTMINSTER AND
 AB4753'ABOUT 5 MI (8.0 KM) SOUTHEAST OF MANCHESTER. TO REACH STATION FROM THE
 AB4753'INTERSECTION OF MD ROUTE 97 (LITTLESTOWN PIKE) AND MD ROUTE 496 (NEW
 AB4753'BACHMAN VALLEY ROAD) GO NORTHEAST ON MD ROUTE 496 FOR 3.1 MI (5.0 KM)
 AB4753'TO THE INTERSECTION WITH OLD BACHMAN VALLEY ROAD. TURN RIGHT ON OLD
 AB4753'BACHMAN VALLEY ROAD AND GO SOUTH FOR 0.95 MI (1.53 KM) TO THE STATION
 AB4753'ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AB4753'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 17.4 FT (5.3 M)
 AB4753'NORTHWEST OF THE CENTERLINE OF THE ROAD, 31.0 FT (9.4 M) NORTHEAST OF
 AB4753'THE END OF A 30 IN STORM DRAIN PIPE, 279.5 FT (85.2 M) NORTHEAST OF
 AB4753'POWER POLE NO.351746 AND 208 FT (63.4 M) NORTHEAST THE CENTERLINE OF A
 AB4753'TAR AND CHIP DRIVEWAY LEADING NORTHWEST TO A FARM HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6048 ***********************************************************************
 HV6048  DESIGNATION -  BACHELOR
 HV6048  PID         -  HV6048
 HV6048  STATE/COUNTY-  MD/TALBOT
 HV6048  COUNTRY     -  US
 HV6048  USGS QUAD   -  OXFORD (2016)
 HV6048
 HV6048                         *CURRENT SURVEY CONTROL
 HV6048  ______________________________________________________________________
 HV6048* NAD 83(1991) POSITION- 38 40 31.82662(N) 076 10 37.89358(W)   ADJUSTED
 HV6048* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6048  ______________________________________________________________________
 HV6048  GEOID HEIGHT    -        -34.650 (meters)                     GEOID18
 HV6048  LAPLACE CORR    -         -4.12  (seconds)                    DEFLEC18
 HV6048  HORZ ORDER      -  THIRD
 HV6048
 HV6048.The horizontal coordinates were established by classical geodetic methods
 HV6048.and adjusted by the National Geodetic Survey in January 1992.
 HV6048
 HV6048.The orthometric height was scaled from a topographic map.
 HV6048
 HV6048.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6048.GEOID18 height accuracy estimate available here.
 HV6048
 HV6048.Click photographs - Photos may exist for this station.
 HV6048
 HV6048.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6048
 HV6048. The following values were computed from the NAD 83(1991) position.
 HV6048
 HV6048;                    North         East     Units Scale Factor Converg.
 HV6048;SPC MD       -   112,307.924   471,597.130   MT  0.99995593   +0 30 59.1
 HV6048;SPC MD       -   368,463.58  1,547,231.58   sFT  0.99995593   +0 30 59.1
 HV6048;UTM  18      - 4,281,425.722   397,599.273   MT  0.99972913   -0 44 08.5
 HV6048
 HV6048!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6048!SPC MD       -   1.00000547  x   0.99995593  =   0.99996140
 HV6048!UTM  18      -   1.00000547  x   0.99972913  =   0.99973460
 HV6048
 HV6048:                Primary Azimuth Mark                     Grid Az
 HV6048:SPC MD       -  OXFORD                                   001 24 18.7
 HV6048:UTM  18      -  OXFORD                                   002 39 26.3
 HV6048
 HV6048_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9759981425(NAD 83)
 HV6048
 HV6048|---------------------------------------------------------------------|
 HV6048| PID    Reference Object                     Distance      Geod. Az  |
 HV6048|                                                           dddmmss.s |
 HV6048| HV6026 OXFORD                              APPROX. 2.0 KM 0015517.8 |
 HV6048|---------------------------------------------------------------------|
 HV6048
 HV6048                          SUPERSEDED SURVEY CONTROL
 HV6048
 HV6048  NAD 83(1986)-  38 40 31.82329(N)    076 10 37.90930(W) AD(       ) 3
 HV6048  NAD 27      -  38 40 31.39100(N)    076 10 39.12500(W) AD(       ) 3
 HV6048  USSD        -  38 40 31.78200(N)    076 10 38.93400(W) AD(       ) 3
 HV6048
 HV6048.Superseded values are not recommended for survey control.
 HV6048
 HV6048.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6048.See file dsdata.pdf to determine how the superseded data were derived.
 HV6048
 HV6048_MARKER: Z = SEE DESCRIPTION
 HV6048_SETTING: 0 = UNSPECIFIED SETTING
 HV6048
 HV6048  HISTORY     - Date     Condition        Report By
 HV6048  HISTORY     - 1900     MONUMENTED       CGS
 HV6048  HISTORY     - 1902     GOOD             CGS
 HV6048  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6048
 HV6048                          STATION DESCRIPTION
 HV6048
 HV6048'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 HV6048'ON THE N SIDE OF CHOPTANK RIVER, ON BACHELOR POINT, AT EASTERN
 HV6048'SIDE OF ENTRANCE TO TRED AVON RIVER, 25 FEET FROM EDGE OF 6-FOOT
 HV6048'BLUFF, IN A CULTIVATED FIELD.  STATION MARKED BY A CEMENT POST 4
 HV6048'INCHES SQUARE WITH TOP FLUSH WITH SURFACE OF GROUND.  THE POST IS
 HV6048'SET INSIDE A TILE PIPE, THE TOP OF WHICH IS 8 INCHES BELOW
 HV6048'SURFACE OF GROUND.
 HV6048
 HV6048                          STATION RECOVERY (1940)
 HV6048
 HV6048'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6048'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  MONUMENT HAS BEEN
 HV6048'WASHED OUT AND CARRIED AWAY BY NATIVES.  SEE DATA FOR STATION BACH.
 HV6048'
 HV6048'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5395 ***********************************************************************
 JV5395  DESIGNATION -  BACK
 JV5395  PID         -  JV5395
 JV5395  STATE/COUNTY-  MD/BALTIMORE
 JV5395  COUNTRY     -  US
 JV5395  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5395
 JV5395                         *CURRENT SURVEY CONTROL
 JV5395  ______________________________________________________________________
 JV5395* NAD 83(1991) POSITION- 39 17 38.49454(N) 076 29 51.76951(W)   ADJUSTED
 JV5395* NAVD 88 ORTHO HEIGHT -    15.    (meters)       49.    (feet) SCALED
 JV5395  ______________________________________________________________________
 JV5395  GEOID HEIGHT    -        -32.956 (meters)                     GEOID18
 JV5395  LAPLACE CORR    -         -2.78  (seconds)                    DEFLEC18
 JV5395  HORZ ORDER      -  SECOND
 JV5395
 JV5395.The horizontal coordinates were established by classical geodetic methods
 JV5395.and adjusted by the National Geodetic Survey in January 1992.
 JV5395
 JV5395.The orthometric height was scaled from a topographic map.
 JV5395
 JV5395.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5395.GEOID18 height accuracy estimate available here.
 JV5395
 JV5395.Click photographs - Photos may exist for this station.
 JV5395
 JV5395.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5395
 JV5395. The following values were computed from the NAD 83(1991) position.
 JV5395
 JV5395;                    North         East     Units Scale Factor Converg.
 JV5395;SPC MD       -   180,766.467   443,329.355   MT  0.99997643   +0 18 54.9
 JV5395;SPC MD       -   593,064.65  1,454,489.73   sFT  0.99997643   +0 18 54.9
 JV5395;UTM  18      - 4,350,474.994   370,845.860   MT  0.99980539   -0 56 55.1
 JV5395
 JV5395!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5395!SPC MD       -   1.00000286  x   0.99997643  =   0.99997929
 JV5395!UTM  18      -   1.00000286  x   0.99980539  =   0.99980825
 JV5395
 JV5395:                Primary Azimuth Mark                     Grid Az
 JV5395:SPC MD       -  BACK AZ MK                               119 07 42.6
 JV5395:UTM  18      -  BACK AZ MK                               120 23 32.6
 JV5395
 JV5395_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7084550474(NAD 83)
 JV5395
 JV5395|---------------------------------------------------------------------|
 JV5395| PID    Reference Object                     Distance      Geod. Az  |
 JV5395|                                                           dddmmss.s |
 JV5395| CA9922 BACK RM 1                            14.780 METERS 04413     |
 JV5395| CA9921 BACK AZ MK                                         1192637.5 |
 JV5395| CA9923 BACK RM 2                            33.129 METERS 13309     |
 JV5395| JV5378 BACK R BALT CITY SEWER PLT STK      APPROX. 0.7 KM 1352624.7 |
 JV5395| JV5483 BALTIMORE CAPLAND GRAIN STACK       APPROX. 1.1 KM 2093910.1 |
 JV5395| JV5482 BACK R CONSOL PWR CO GAS TANK       APPROX. 0.8 KM 2604236.9 |
 JV5395|---------------------------------------------------------------------|
 JV5395
 JV5395                          SUPERSEDED SURVEY CONTROL
 JV5395
 JV5395  NAD 83(1986)-  39 17 38.49023(N)    076 29 51.77856(W) AD(       ) 2
 JV5395  NAD 27      -  39 17 38.10330(N)    076 29 52.91140(W) AD(       ) 2
 JV5395
 JV5395.Superseded values are not recommended for survey control.
 JV5395
 JV5395.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5395.See file dsdata.pdf to determine how the superseded data were derived.
 JV5395
 JV5395_MARKER: DS = TRIANGULATION STATION DISK
 JV5395_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5395_STAMPING: BACK 1958
 JV5395_MARK LOGO: CGS
 JV5395_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5395+STABILITY: SURFACE MOTION
 JV5395
 JV5395  HISTORY     - Date     Condition        Report By
 JV5395  HISTORY     - 1958     MONUMENTED       CGS
 JV5395  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 JV5395
 JV5395                          STATION DESCRIPTION
 JV5395
 JV5395'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5395'STATION IS LOCATED ON BALTIMORE CITY PROPERTY AT THE BACK RIVER
 JV5395'SEWER TREATMENT WORKS.  STATION IS 110 FEET NORTHWEST OF CENTER OF
 JV5395'WATER TANK, 63 FEET SOUTH-SOUTHWEST OF APPROXIMATE CENTERLINE OF
 JV5395'SURFACED ROAD AND ABOUT 50 YARDS SOUTHEAST OF ADMINISTRATION
 JV5395'BUILDING.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED BACK 1958.
 JV5395'
 JV5395'REFERENCE MARK NO. 1 IS 23 FEET SOUTH-SOUTHWEST OF APPROXIMATE
 JV5395'CENTERLINE OF SURFACED ROAD AND 97-1/2 FEET NORTH-NORTHWEST OF
 JV5395'NORTHWEST LEG OF WATER TANK.  THE MARK IS SET FLUSH AND THE DISK
 JV5395'IS STAMPED BACK NO 1 1958.
 JV5395'
 JV5395'REFERENCE MARK NO. 2 IS SET IN A DRILL HOLE IN CONCRETE AT THE
 JV5395'BASE OF CENTER PIPE OF WATER TANK.  THE MARK IS SET FLUSH AND THE
 JV5395'DISK IS STAMPED BACK NO 2 1958.
 JV5395'
 JV5395'AZIMUTH MARK IS A STANDARD DISK SET IN A DRILL HOLE IN SOUTH
 JV5395'CONCRETE HEADWALL OF CULVERT, 13-1/2 FEET SOUTH OF APPROXIMATE
 JV5395'CENTERLINE OF SURFACED ROAD.  THE MARK IS SET FLUSH AND THE DISK
 JV5395'IS STAMPED BACK 1958.
 JV5395'
 JV5395'TO REACH FROM THE WEST END OF BRIDGE OVER BACK RIVER IN THE WEST
 JV5395'EDGE OF ESSEX, GO WESTERLY ON EASTERN AVENUE FOR 0.65 MILE TO
 JV5395'MOFFETT AVENUE.  TURN LEFT AND GO SOUTHERLY ON MOFFETT AVENUE FOR
 JV5395'0.2 MILE TO ROAD LEFT.  TURN LEFT AND GO EASTERLY ON SURFACED ROAD
 JV5395'FOR 0.25 MILE TO ADMINISTRATION BUILDING ON LEFT AND STATION ON
 JV5395'RIGHT (SOUTH) SIDE OF ROAD AS DESCRIBED.  CONTINUE EASTERLY ON
 JV5395'SURFACED ROAD FOR 0.4 MILE TO AZIMUTH MARK ON RIGHT (SOUTH) SIDE
 JV5395'OF ROAD AS DESCRIBED.
 JV5395'
 JV5395'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV5395
 JV5395                          STATION RECOVERY (1983)
 JV5395
 JV5395'RECOVERY NOTE BY US POWER SQUADRON 1983 (AHH)
 JV5395'BACK 1958 DESTROYED.
 JV5395'
 JV5395'THE WATER TANK HAS BEEN DESTROYED AND A NEW ADMINISTRATION
 JV5395'BUILDING HAS BEEN BUILT.  THE GROUND AROUND THE WATER TANK WAS
 JV5395'LEVELED AND A NEW WATER TANK HAS BEEN ERECTED ON THE SITE.  ALL
 JV5395'MARKS WERE SEARCHED FOR WITH THE HELP OF THE PLANT ENGINEER AND
 JV5395'COULD NOT BE LOCATED.  THE STATION AND REFERENCE MARKS ARE
 JV5395'CONSIDERED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3919 ***********************************************************************
 JU3919  DESIGNATION -  BACK 1898
 JU3919  PID         -  JU3919
 JU3919  STATE/COUNTY-  MD/CECIL
 JU3919  COUNTRY     -  US
 JU3919  USGS QUAD   -  NORTH EAST (2016)
 JU3919
 JU3919                         *CURRENT SURVEY CONTROL
 JU3919  ______________________________________________________________________
 JU3919* NAD 83(1991) POSITION- 39 31 26.69438(N) 075 52 39.33145(W)   ADJUSTED
 JU3919* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3919  ______________________________________________________________________
 JU3919  GEOID HEIGHT    -        -33.302 (meters)                     GEOID18
 JU3919  LAPLACE CORR    -         -0.97  (seconds)                    DEFLEC18
 JU3919  HORZ ORDER      -  THIRD
 JU3919
 JU3919.The horizontal coordinates were established by classical geodetic methods
 JU3919.and adjusted by the National Geodetic Survey in January 1992.
 JU3919
 JU3919.The orthometric height was scaled from a topographic map.
 JU3919
 JU3919.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3919.GEOID18 height accuracy estimate available here.
 JU3919
 JU3919.Click photographs - Photos may exist for this station.
 JU3919
 JU3919.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3919
 JU3919. The following values were computed from the NAD 83(1991) position.
 JU3919
 JU3919;                    North         East     Units Scale Factor Converg.
 JU3919;SPC MD       -   206,781.923   496,507.720   MT  1.00001380   +0 42 16.1
 JU3919;SPC MD       -   678,417.03  1,628,959.08   sFT  1.00001380   +0 42 16.1
 JU3919;UTM  18      - 4,375,304.769   424,570.977   MT  0.99967005   -0 33 30.7
 JU3919
 JU3919!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3919!SPC MD       -   1.00000526  x   1.00001380  =   1.00001906
 JU3919!UTM  18      -   1.00000526  x   0.99967005  =   0.99967531
 JU3919
 JU3919:                Primary Azimuth Mark                     Grid Az
 JU3919:SPC MD       -  ISLAND 1898                              164 52 19.8
 JU3919:UTM  18      -  ISLAND 1898                              166 08 06.6
 JU3919
 JU3919_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2457075304(NAD 83)
 JU3919
 JU3919|---------------------------------------------------------------------|
 JU3919| PID    Reference Object                     Distance      Geod. Az  |
 JU3919|                                                           dddmmss.s |
 JU3919| JU3926 ISLAND 1898                         APPROX. 0.8 KM 1653435.9 |
 JU3919|---------------------------------------------------------------------|
 JU3919
 JU3919                          SUPERSEDED SURVEY CONTROL
 JU3919
 JU3919  NAD 83(1986)-  39 31 26.68587(N)    075 52 39.33686(W) AD(       ) 3
 JU3919  NAD 27      -  39 31 26.28900(N)    075 52 40.55300(W) AD(       ) 3
 JU3919  USSD        -  39 31 26.67100(N)    075 52 40.38200(W) AD(       ) 3
 JU3919
 JU3919.Superseded values are not recommended for survey control.
 JU3919
 JU3919.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3919.See file dsdata.pdf to determine how the superseded data were derived.
 JU3919
 JU3919
 JU3919  HISTORY     - Date     Condition        Report By
 JU3919  HISTORY     - 1898     MONUMENTED       CGS
 JU3919  HISTORY     - 1902     GOOD             CGS
 JU3919
 JU3919                          STATION DESCRIPTION
 JU3919
 JU3919'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 JU3919'AT THE N SIDE OF THE MOUTH OF BACK CREEK, E SIDE OF ELK RIVER,
 JU3919'AT HIGH-WATER MARK 2 METERS OUTSIDE OF WOODS LINE.  MARKED BY A
 JU3919'BOX 3 BY 3 INCHES AND 3 FEET DEEP, FILLED WITH CEMENT, A NAIL
 JU3919'IN TOP MARKING THE CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6699 ***********************************************************************
 HV6699  DESIGNATION -  BACK 1907
 HV6699  PID         -  HV6699
 HV6699  STATE/COUNTY-  MD/CALVERT
 HV6699  COUNTRY     -  US
 HV6699  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6699
 HV6699                         *CURRENT SURVEY CONTROL
 HV6699  ______________________________________________________________________
 HV6699* NAD 83(1991) POSITION- 38 19 35.36365(N) 076 27 57.23524(W)   ADJUSTED
 HV6699* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6699  ______________________________________________________________________
 HV6699  GEOID HEIGHT    -        -34.360 (meters)                     GEOID18
 HV6699  LAPLACE CORR    -         -5.05  (seconds)                    DEFLEC18
 HV6699  HORZ ORDER      -  THIRD
 HV6699
 HV6699.The horizontal coordinates were established by classical geodetic methods
 HV6699.and adjusted by the National Geodetic Survey in January 1992.
 HV6699
 HV6699.The orthometric height was scaled from a topographic map.
 HV6699
 HV6699.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6699.GEOID18 height accuracy estimate available here.
 HV6699
 HV6699.Click photographs - Photos may exist for this station.
 HV6699
 HV6699.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6699
 HV6699. The following values were computed from the NAD 83(1991) position.
 HV6699
 HV6699;                    North         East     Units Scale Factor Converg.
 HV6699;SPC MD       -    73,379.912   446,702.214   MT  0.99999550   +0 20 06.8
 HV6699;SPC MD       -   240,747.26  1,465,555.51   sFT  0.99999550   +0 20 06.8
 HV6699;UTM  18      - 4,243,057.374   371,867.441   MT  0.99980219   -0 54 33.1
 HV6699
 HV6699!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6699!SPC MD       -   1.00000528  x   0.99999550  =   1.00000078
 HV6699!UTM  18      -   1.00000528  x   0.99980219  =   0.99980746
 HV6699
 HV6699:                Primary Azimuth Mark                     Grid Az
 HV6699:SPC MD       -  BUR                                      288 13 49.9
 HV6699:UTM  18      -  BUR                                      289 28 29.8
 HV6699
 HV6699_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7186743057(NAD 83)
 HV6699
 HV6699|---------------------------------------------------------------------|
 HV6699| PID    Reference Object                     Distance      Geod. Az  |
 HV6699|                                                           dddmmss.s |
 HV6699| HV6711 SOLOMONS ISLAND ME CHURCH           APPROX. 0.6 KM 1253743.9 |
 HV6699| HV6697 BARN EAST GABLE                     APPROX. 2.5 KM 2703055.2 |
 HV6699| HV6695 BUR                                 APPROX. 1.5 KM 2883356.7 |
 HV6699|---------------------------------------------------------------------|
 HV6699
 HV6699                          SUPERSEDED SURVEY CONTROL
 HV6699
 HV6699  NAD 83(1986)-  38 19 35.36352(N)    076 27 57.24972(W) AD(       ) 3
 HV6699  NAD 27      -  38 19 34.91900(N)    076 27 58.40600(W) AD(       ) 3
 HV6699  USSD        -  38 19 35.28800(N)    076 27 58.17100(W) AD(       ) 3
 HV6699
 HV6699.Superseded values are not recommended for survey control.
 HV6699
 HV6699.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6699.See file dsdata.pdf to determine how the superseded data were derived.
 HV6699
 HV6699_MARKER: K = CLAY TILE PIPE
 HV6699_SETTING: 0 = UNSPECIFIED SETTING
 HV6699_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6699
 HV6699  HISTORY     - Date     Condition        Report By
 HV6699  HISTORY     - 1907     MONUMENTED       CGS
 HV6699  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6699
 HV6699                          STATION DESCRIPTION
 HV6699
 HV6699'DESCRIBED BY COAST AND GEODETIC SURVEY 1907 (OWF)
 HV6699'STATION IS ON THE EASTERN BANK OF PATUXENT RIVER, ABOUT 1/4 MILE
 HV6699'ABOVE SOLOMONS ISLAND BRIDGE, IN A SMALL ORCHARD ON THE STRATHMORE
 HV6699'PLACE, AND 4.3 METERS (14 FEET) FROM RIVER BANK.  MARKED BY CENTER
 HV6699'OF A 4-INCH TILE PIPE, 20 INCHES LONG, WITH TOP ABOUT EVEN WITH
 HV6699'SURFACE OF GROUND.  DISTANCES AND AZIMUTHS FROM THE STATION OF
 HV6699'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--SW CORNER OF BRICK
 HV6699'FOUNDATION OF LARGE DWELLING HOUSE, 46.37 METERS (152.1 FEET),
 HV6699'275 DEG 00 MIN.  7-INCH CEDAR TREE ON LAWN, 21.9 METERS (71.9
 HV6699'FEET), 287 DEG 23 MIN.  CEDAR TREE ABOUT 1.8 METERS (6 FEET) FROM
 HV6699'TOP OF BANK, 23.28 METERS (76.4 FEET), 317 DEG 31 MIN.  NEAREST
 HV6699'APPLE TREE IN ORCHARD, 7.47 METERS (24.51 FEET), ABOUT N BY
 HV6699'E.
 HV6699
 HV6699                          STATION RECOVERY (1942)
 HV6699
 HV6699'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6699'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR TWO HOURS,
 HV6699'BUT NO TRACE OF IT COULD BE FOUND.  THE PEOPLE WHO HAVE LIVED ON
 HV6699'THE STRATHMORE PLACE STATED THE BANK OF THE RIVER HAS WASHED
 HV6699'BETWEEN 10 AND 15 FEET.
 HV6699'
 HV6699'IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9041 ***********************************************************************
 HV9041  DESIGNATION -  BACK CREEK LT 2
 HV9041  PID         -  HV9041
 HV9041  STATE/COUNTY-  MD/CALVERT
 HV9041  COUNTRY     -  US
 HV9041  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV9041
 HV9041                         *CURRENT SURVEY CONTROL
 HV9041  ______________________________________________________________________
 HV9041* NAD 83(1991) POSITION- 38 19 18.65698(N) 076 27 18.28270(W)   ADJUSTED
 HV9041* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 HV9041  ______________________________________________________________________
 HV9041  GEOID HEIGHT    -        -34.397 (meters)                     GEOID18
 HV9041  LAPLACE CORR    -         -5.21  (seconds)                    DEFLEC18
 HV9041  HORZ ORDER      -  THIRD
 HV9041
 HV9041.The horizontal coordinates were established by classical geodetic methods
 HV9041.and adjusted by the National Geodetic Survey in January 1992.
 HV9041
 HV9041.The orthometric height was scaled from a topographic map.
 HV9041
 HV9041.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9041.GEOID18 height accuracy estimate available here.
 HV9041
 HV9041.Click photographs - Photos may exist for this station.
 HV9041
 HV9041.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9041
 HV9041. The following values were computed from the NAD 83(1991) position.
 HV9041
 HV9041;                    North         East     Units Scale Factor Converg.
 HV9041;SPC MD       -    72,870.380   447,651.399   MT  0.99999627   +0 20 31.2
 HV9041;SPC MD       -   239,075.57  1,468,669.63   sFT  0.99999627   +0 20 31.2
 HV9041;UTM  18      - 4,242,527.452   372,805.154   MT  0.99979924   -0 54 08.6
 HV9041
 HV9041!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9041!SPC MD       -   1.00000474  x   0.99999627  =   1.00000101
 HV9041!UTM  18      -   1.00000474  x   0.99979924  =   0.99980398
 HV9041
 HV9041_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7280542527(NAD 83)
 HV9041
 HV9041                          SUPERSEDED SURVEY CONTROL
 HV9041
 HV9041  NAD 83(1986)-  38 19 18.65706(N)    076 27 18.29892(W) AD(       ) 3
 HV9041
 HV9041.Superseded values are not recommended for survey control.
 HV9041
 HV9041.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9041.See file dsdata.pdf to determine how the superseded data were derived.
 HV9041
 HV9041_MARKER: 14 = NAVIGATION LIGHT
 HV9041_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9041+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2011
 HV9041
 HV9041  HISTORY     - Date     Condition        Report By
 HV9041  HISTORY     - 1987     FIRST OBSERVED   NOS
 HV9041  HISTORY     - 20020128 GOOD             USPSQD
 HV9041  HISTORY     - 20050726 GOOD             USPSQD
 HV9041  HISTORY     - 20060923 GOOD             USPSQD
 HV9041  HISTORY     - 20110731 GOOD             GEOCAC
 HV9041
 HV9041                          STATION DESCRIPTION
 HV9041
 HV9041'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (REM)
 HV9041'THE STATION IS LOCATED IN BACK CREEK,NEAR SOUTH-WEST POINT OF
 HV9041'MA LEG ISLAND AT THE NARROWS AREA.
 HV9041'
 HV9041'THE STATION WAS REACHED BY BOAT.
 HV9041'
 HV9041'THE STATION IS THE LIGHT ATOP A SINGLE PILE.
 HV9041'
 HV9041'DESCRIBED BY A. EBADIRAD.
 HV9041
 HV9041                          STATION RECOVERY (2002)
 HV9041
 HV9041'RECOVERY NOTE BY US POWER SQUADRON 2002 (SAL)
 HV9041'RECOVERED IN GOOD CONDITION.
 HV9041
 HV9041                          STATION RECOVERY (2005)
 HV9041
 HV9041'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 HV9041'AS DESCRIBED
 HV9041
 HV9041                          STATION RECOVERY (2006)
 HV9041
 HV9041'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV9041'RECOVERED IN GOOD CONDITION.
 HV9041
 HV9041                          STATION RECOVERY (2011)
 HV9041
 HV9041'RECOVERY NOTE BY GEOCACHING 2011 (DPB)
 HV9041'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9042 ***********************************************************************
 HV9042  DESIGNATION -  BACK CREEK LT 5
 HV9042  PID         -  HV9042
 HV9042  STATE/COUNTY-  MD/CALVERT
 HV9042  COUNTRY     -  US
 HV9042  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV9042
 HV9042                         *CURRENT SURVEY CONTROL
 HV9042  ______________________________________________________________________
 HV9042* NAD 83(1991) POSITION- 38 19 35.71928(N) 076 27 26.84325(W)   ADJUSTED
 HV9042* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 HV9042  ______________________________________________________________________
 HV9042  GEOID HEIGHT    -        -34.383 (meters)                     GEOID18
 HV9042  LAPLACE CORR    -         -5.10  (seconds)                    DEFLEC18
 HV9042  HORZ ORDER      -  THIRD
 HV9042
 HV9042.The horizontal coordinates were established by classical geodetic methods
 HV9042.and adjusted by the National Geodetic Survey in January 1992.
 HV9042
 HV9042.The orthometric height was scaled from a topographic map.
 HV9042
 HV9042.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9042.GEOID18 height accuracy estimate available here.
 HV9042
 HV9042.Click photographs - Photos may exist for this station.
 HV9042
 HV9042.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9042
 HV9042. The following values were computed from the NAD 83(1991) position.
 HV9042
 HV9042;                    North         East     Units Scale Factor Converg.
 HV9042;SPC MD       -    73,395.230   447,440.334   MT  0.99999548   +0 20 25.9
 HV9042;SPC MD       -   240,797.52  1,467,977.16   sFT  0.99999548   +0 20 25.9
 HV9042;UTM  18      - 4,243,056.658   372,605.576   MT  0.99979987   -0 54 14.2
 HV9042
 HV9042!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9042!SPC MD       -   1.00000471  x   0.99999548  =   1.00000019
 HV9042!UTM  18      -   1.00000471  x   0.99979987  =   0.99980458
 HV9042
 HV9042_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7260543056(NAD 83)
 HV9042
 HV9042                          SUPERSEDED SURVEY CONTROL
 HV9042
 HV9042  NAD 83(1986)-  38 19 35.71917(N)    076 27 26.86012(W) AD(       ) 3
 HV9042
 HV9042.Superseded values are not recommended for survey control.
 HV9042
 HV9042.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9042.See file dsdata.pdf to determine how the superseded data were derived.
 HV9042
 HV9042_MARKER: 14 = NAVIGATION LIGHT
 HV9042_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9042+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2006
 HV9042
 HV9042  HISTORY     - Date     Condition        Report By
 HV9042  HISTORY     - 1987     FIRST OBSERVED   NOS
 HV9042  HISTORY     - 20020128 GOOD             USPSQD
 HV9042  HISTORY     - 20050726 GOOD             USPSQD
 HV9042  HISTORY     - 20060923 GOOD             USPSQD
 HV9042
 HV9042                          STATION DESCRIPTION
 HV9042
 HV9042'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (REM)
 HV9042'THE STATION IS LOCATED IN BACK CREEK NEAR NORTH NORTH-EAST END OF
 HV9042'JOHNSTOWN.
 HV9042'
 HV9042'THE STATION WAS REACHED BY BOAT.
 HV9042'
 HV9042'THE STATION IS THE LIGHT ATOP A SINGLE PILE.
 HV9042'
 HV9042'DESCRIBED BY A. EBADIRAD.
 HV9042
 HV9042                          STATION RECOVERY (2002)
 HV9042
 HV9042'RECOVERY NOTE BY US POWER SQUADRON 2002 (SAL)
 HV9042'RECOVERED IN GOOD CONDITION.
 HV9042
 HV9042                          STATION RECOVERY (2005)
 HV9042
 HV9042'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 HV9042'AS DESCRIBED
 HV9042
 HV9042                          STATION RECOVERY (2006)
 HV9042
 HV9042'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV9042'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5944 ***********************************************************************
 HV5944  DESIGNATION -  BACK MSFC 1910
 HV5944  PID         -  HV5944
 HV5944  STATE/COUNTY-  MD/DORCHESTER
 HV5944  COUNTRY     -  US
 HV5944  USGS QUAD   -  CHURCH CREEK (2016)
 HV5944
 HV5944                         *CURRENT SURVEY CONTROL
 HV5944  ______________________________________________________________________
 HV5944* NAD 83(1991) POSITION- 38 33 25.76080(N) 076 14 42.85260(W)   ADJUSTED
 HV5944* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5944  ______________________________________________________________________
 HV5944  GEOID HEIGHT    -        -34.671 (meters)                     GEOID18
 HV5944  LAPLACE CORR    -         -5.28  (seconds)                    DEFLEC18
 HV5944  HORZ ORDER      -  THIRD
 HV5944
 HV5944.The horizontal coordinates were established by classical geodetic methods
 HV5944.and adjusted by the National Geodetic Survey in January 1992.
 HV5944
 HV5944.The orthometric height was scaled from a topographic map.
 HV5944
 HV5944.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5944.GEOID18 height accuracy estimate available here.
 HV5944
 HV5944.Click photographs - Photos may exist for this station.
 HV5944
 HV5944.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5944
 HV5944. The following values were computed from the NAD 83(1991) position.
 HV5944
 HV5944;                    North         East     Units Scale Factor Converg.
 HV5944;SPC MD       -    99,119.739   465,784.980   MT  0.99996522   +0 28 25.4
 HV5944;SPC MD       -   325,195.34  1,528,162.89   sFT  0.99996522   +0 28 25.4
 HV5944;UTM  18      - 4,268,370.494   391,501.930   MT  0.99974497   -0 46 34.4
 HV5944
 HV5944!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5944!SPC MD       -   1.00000532  x   0.99996522  =   0.99997054
 HV5944!UTM  18      -   1.00000532  x   0.99974497  =   0.99975029
 HV5944
 HV5944:                Primary Azimuth Mark                     Grid Az
 HV5944:SPC MD       -  BAYLY MSFC 1910                          177 52 08.6
 HV5944:UTM  18      -  BAYLY MSFC 1910                          179 07 08.4
 HV5944
 HV5944_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9150168370(NAD 83)
 HV5944
 HV5944|---------------------------------------------------------------------|
 HV5944| PID    Reference Object                     Distance      Geod. Az  |
 HV5944|                                                           dddmmss.s |
 HV5944| HV5950 BAYLY MSFC 1910                     APPROX. 0.6 KM 1782034.0 |
 HV5944| HV5911 MITCHELL MSFC 1910                  365.473 METERS 25052     |
 HV5944|---------------------------------------------------------------------|
 HV5944
 HV5944                          SUPERSEDED SURVEY CONTROL
 HV5944
 HV5944  NAD 83(1986)-  38 33 25.75855(N)    076 14 42.86801(W) AD(       ) 3
 HV5944  NAD 27      -  38 33 25.35300(N)    076 14 44.05800(W) AD(       ) 3
 HV5944  USSD        -  38 33 25.73800(N)    076 14 43.84200(W) AD(       ) 3
 HV5944
 HV5944.Superseded values are not recommended for survey control.
 HV5944
 HV5944.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5944.See file dsdata.pdf to determine how the superseded data were derived.
 HV5944
 HV5944_MARKER: Z = SEE DESCRIPTION
 HV5944_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5944_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5944+STABILITY: SURFACE MOTION
 HV5944
 HV5944  HISTORY     - Date     Condition        Report By
 HV5944  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5944  HISTORY     - 1939     GOOD             CGS
 HV5944  HISTORY     - 1961     SEE DESCRIPTION  CGS
 HV5944
 HV5944                          STATION DESCRIPTION
 HV5944
 HV5944'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5944'ON THE EASTERN SHORE OF HUDSON CREEK, ABOUT 5/8 MILE N OF
 HV5944'ENTRANCE TO BACK CREEK AND 1-3/8 MILES N OF CASONS POINT, ON SOLID
 HV5944'GROUND AT EDGE OF WOODS, ABOUT 2 FEET ABOVE HIGH WATER, 14 YARDS
 HV5944'E OF SHORE, 16 YARDS NE OF SHORE, 45 YARDS SSE OF SHORE, AND 175
 HV5944'YARDS NNW OF A HOUSE.  STATION IS MARKED BY A HOLE IN THE CENTER
 HV5944'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV5944'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV5944'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5944'TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN
 HV5944'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV5944'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5944'ARE AS FOLLOWS--NEAR CHIMNEY OF HOUSE, 3/4 MILE, S 28 DEG 4 MIN W.
 HV5944'NEAR PEAK OF HOUSE, 5/8 MILE, S 31 DEG 40 MIN W. NEAR PEAK OF
 HV5944'BARN, 1/2 MILE, S 41 DEG 13 MIN W.  CHIMNEY ON NEAR END OF HOUSE,
 HV5944'3/8 MILE, S 70 DEG 25 MIN W.  LEFT CHIMNEY OF HOUSE, 3/4 MILE, N
 HV5944'29 DEG 56 MIN W.  NAIL IN BLAZE IN 12-INCH PINE TREE, 8.05 METERS
 HV5944'(26.41 FEET), N 6 DEG 38 MIN W. NAIL IN BLAZE IN 12-INCH PINE
 HV5944'TREE, 11.19 METERS (36.7 FEET), N 44 DEG 35 MIN E.  NAIL IN BLAZE
 HV5944'IN 12-INCH PINE TREE, 16.04 METERS (52.6 FEET), S 56 DEG 27 MIN E.
 HV5944'RIGHT CHIMNEY OF HOUSE, 175 YARDS, S 20 DEG 47 MIN E.
 HV5944
 HV5944                          STATION RECOVERY (1939)
 HV5944
 HV5944'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV5944'STATION MARK FOUND IN GOOD CONDITION.  LOCATED ON THE EASTERN
 HV5944'SHORE OF HUDSON CREEK, ABOUT 5/8 MILE N OF ENTRANCE TO BACK CREEK,
 HV5944'1-3/8 MILES N OF CASONS POINT, AT THE EDGE OF SOLID GROUND AT
 HV5944'EDGE OF THICK PINE WOODS, ABOUT 165 YARDS WNW OF A FARMHOUSE, 8.1
 HV5944'METERS E OF SHORE LINE.
 HV5944
 HV5944                          STATION RECOVERY (1961)
 HV5944
 HV5944'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5944'STATION SURFACE MARK WAS FOUND IN THE WATER ABOUT 2 METERS
 HV5944'OFFSHORE OF THE M.H.W.L.  THE PUBLISHED DESCRIPTION IS INADEQUATE
 HV5944'FOR RECOVERY OF THE SUB-SURFACE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5378 ***********************************************************************
 JV5378  DESIGNATION -  BACK R BALT CITY SEWER PLT STK
 JV5378  PID         -  JV5378
 JV5378  STATE/COUNTY-  MD/BALTIMORE
 JV5378  COUNTRY     -  US
 JV5378  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5378
 JV5378                         *CURRENT SURVEY CONTROL
 JV5378  ______________________________________________________________________
 JV5378* NAD 83(1991) POSITION- 39 17 23.40105(N) 076 29 32.64283(W)   ADJUSTED
 JV5378  ______________________________________________________________________
 JV5378  GEOID HEIGHT    -        -32.967 (meters)                     GEOID18
 JV5378  LAPLACE CORR    -         -2.51  (seconds)                    DEFLEC18
 JV5378  HORZ ORDER      -  THIRD
 JV5378
 JV5378.The horizontal coordinates were established by classical geodetic methods
 JV5378.and adjusted by the National Geodetic Survey in January 1992.
 JV5378
 JV5378.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5378.GEOID18 height accuracy estimate available here.
 JV5378
 JV5378.Click photographs - Photos may exist for this station.
 JV5378
 JV5378.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5378
 JV5378. The following values were computed from the NAD 83(1991) position.
 JV5378
 JV5378;                    North         East     Units Scale Factor Converg.
 JV5378;SPC MD       -   180,303.550   443,790.258   MT  0.99997590   +0 19 06.9
 JV5378;SPC MD       -   591,545.90  1,456,001.87   sFT  0.99997590   +0 19 06.9
 JV5378;UTM  18      - 4,350,002.104   371,296.363   MT  0.99980395   -0 56 42.7
 JV5378
 JV5378_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7129650002(NAD 83)
 JV5378
 JV5378                          SUPERSEDED SURVEY CONTROL
 JV5378
 JV5378  NAD 83(1986)-  39 17 23.39676(N)    076 29 32.65190(W) AD(       ) 3
 JV5378  NAD 27      -  39 17 23.01000(N)    076 29 33.78900(W) AD(       ) 3
 JV5378
 JV5378.Superseded values are not recommended for survey control.
 JV5378
 JV5378.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5378.See file dsdata.pdf to determine how the superseded data were derived.
 JV5378
 JV5378_MARKER: 63 = STACK
 JV5378
 JV5378  HISTORY     - Date     Condition        Report By
 JV5378  HISTORY     - 1952     FIRST OBSERVED   CGS
 JV5378  HISTORY     - 1961     GOOD             CGS
 JV5378  HISTORY     - 1971     GOOD             NGS
 JV5378  HISTORY     - 1983     GOOD             USPSQD
 JV5378  HISTORY     - 19940406 GOOD             USPSQD
 JV5378  HISTORY     - 19961006 GOOD             USPSQD
 JV5378  HISTORY     - 20050404 GOOD             GEOCAC
 JV5378
 JV5378                          STATION DESCRIPTION
 JV5378
 JV5378'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (HAP)
 JV5378'ABOUT 7-1/2 MILES SE OF THE CENTER OF BALTIMORE, 0.4 MILE S OF THE
 JV5378'INTERSECTION OF EASTERN AND MOFFETT AVENUES, AT THE MAIN PLANT AND
 JV5378'OFFICES OF THE CITY OF BALTIMORE SEWERAGE AND DISPOSAL SYSTEM
 JV5378'WORKS.  A 350-FOOT BRICK STACK.  THE BASE OF THE STACK IS 14.40
 JV5378'FEET ABOVE MEAN SEA LEVEL.
 JV5378
 JV5378                          STATION RECOVERY (1961)
 JV5378
 JV5378'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5378'THE STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5378
 JV5378                          STATION RECOVERY (1971)
 JV5378
 JV5378'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV5378'STATION WAS NOT VISITED, BUT WAS IDENTIFIED BY ANGLE FROM
 JV5378'BALTIMORE SW BASE 2 1954.  IT IS A TALL STACK, PAINTED ALTERNATE
 JV5378'RED AND WHITE.
 JV5378
 JV5378                          STATION RECOVERY (1983)
 JV5378
 JV5378'RECOVERY NOTE BY US POWER SQUADRON 1983 (AHH)
 JV5378'BACK RIVER, CITY OF BALTIMORE SEWERAGE PLANT, STACK RECOVERED
 JV5378'GOOD.
 JV5378'
 JV5378'STACK WAS VISITED AND DIRECTION ARE INCORRECT.  DUE TO EXTENSIVE
 JV5378'RECONSTRUCTION MOFFETT AVENUE IS NO LONGER A STREET.  TO ENTER THE
 JV5378'PLANT USE THE INTERSECTION OF DIAMOND POINT ROAD AND EASTERN AVENUE
 JV5378'AND PASS THROUGH SECURITY GATE.  THE STACK IS STILL PAINTED
 JV5378'ALTERNATE RED AND WHITE, WITH RED AT THE TOP OF THE STACK.
 JV5378
 JV5378                          STATION RECOVERY (1994)
 JV5378
 JV5378'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5378'RECOVERED IN GOOD CONDITION.
 JV5378
 JV5378                          STATION RECOVERY (1996)
 JV5378
 JV5378'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV5378'RECOVERED IN GOOD CONDITION.
 JV5378
 JV5378                          STATION RECOVERY (2005)
 JV5378
 JV5378'RECOVERY NOTE BY GEOCACHING 2005 (CGP)
 JV5378'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1301 ***********************************************************************
 JW1301  DESIGNATION -  BACKBONE
 JW1301  PID         -  JW1301
 JW1301  STATE/COUNTY-  MD/GARRETT
 JW1301  COUNTRY     -  US
 JW1301  USGS QUAD   -  TABLE ROCK (2016)
 JW1301
 JW1301                         *CURRENT SURVEY CONTROL
 JW1301  ______________________________________________________________________
 JW1301* NAD 83(1995) POSITION- 39 16 59.84851(N) 079 26 20.38426(W)   NO CHECK
 JW1301* NAVD 88 ORTHO HEIGHT -   993.478 (meters)     3259.44  (feet) ADJUSTED
 JW1301  ______________________________________________________________________
 JW1301  GEOID HEIGHT    -        -30.993 (meters)                     GEOID18
 JW1301  LAPLACE CORR    -          1.16  (seconds)                    DEFLEC18
 JW1301  DYNAMIC HEIGHT  -        992.779 (meters)     3257.14  (feet) COMP
 JW1301  MODELED GRAVITY -    979,888.3   (mgal)                       NAVD 88
 JW1301
 JW1301  HORZ ORDER      -  SECOND
 JW1301  VERT ORDER      -  SECOND    CLASS I
 JW1301
 JW1301.The horizontal coordinates were established by classical geodetic methods
 JW1301.and adjusted by the National Geodetic Survey in April 1998.
 JW1301
 JW1301.No horizontal observational check was made to the station.
 JW1301
 JW1301.The orthometric height was determined by differential leveling and
 JW1301.adjusted by the NATIONAL GEODETIC SURVEY
 JW1301.in April 1995.
 JW1301
 JW1301.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1301.GEOID18 height accuracy estimate available here.
 JW1301
 JW1301.Click photographs - Photos may exist for this station.
 JW1301
 JW1301.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1301
 JW1301.The dynamic height is computed by dividing the NAVD 88
 JW1301.geopotential number by the normal gravity value computed on the
 JW1301.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1301.degrees latitude (g = 980.6199 gals.).
 JW1301
 JW1301.The modeled gravity was interpolated from observed gravity values.
 JW1301
 JW1301. The following values were computed from the NAD 83(1995) position.
 JW1301
 JW1301;                    North         East     Units Scale Factor Converg.
 JW1301;SPC MD       -   182,266.405   189,593.960   MT  0.99997509   -1 31 50.9
 JW1301;SPC MD       -   597,985.70    622,026.18   sFT  0.99997509   -1 31 50.9
 JW1301;SPC WV N     -    86,960.229   605,263.233   MT  0.99995852   +0 02 20.1
 JW1301;SPC WV N     -   285,302.02  1,985,767.79   sFT  0.99995852   +0 02 20.1
 JW1301;UTM  17      - 4,349,375.858   634,632.780   MT  0.99982318   +0 59 18.6
 JW1301
 JW1301!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1301!SPC MD       -   0.99984902  x   0.99997509  =   0.99982411
 JW1301!SPC WV N     -   0.99984902  x   0.99995852  =   0.99980754
 JW1301!UTM  17      -   0.99984902  x   0.99982318  =   0.99967222
 JW1301
 JW1301_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3463249375(NAD 83)
 JW1301
 JW1301|---------------------------------------------------------------------|
 JW1301| PID    Reference Object                     Distance      Geod. Az  |
 JW1301|                                                           dddmmss.s |
 JW1301| JW1297 ROTH                                 18.273 METERS 01359     |
 JW1301| CX5299 ROTH RM 3                            30.258 METERS 02608     |
 JW1301| CX3181 BACKBONE RM 2                         3.965 METERS 22845     |
 JW1301| CX3180 BACKBONE RM 1                         6.127 METERS 30923     |
 JW1301|---------------------------------------------------------------------|
 JW1301
 JW1301                          SUPERSEDED SURVEY CONTROL
 JW1301
 JW1301  NAD 83(1991)-  39 16 59.84851(N)    079 26 20.38425(W) AD(       ) 2
 JW1301  NAD 83(1986)-  39 16 59.85759(N)    079 26 20.39299(W) AD(       ) 2
 JW1301  NAD 27      -  39 16 59.49919(N)    079 26 21.24457(W) AD(       ) 2
 JW1301  NGVD 29 (07/19/86)  993.3    (m)         3259.     (f) VERT ANG       
 JW1301
 JW1301.Superseded values are not recommended for survey control.
 JW1301
 JW1301.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1301.See file dsdata.pdf to determine how the superseded data were derived.
 JW1301
 JW1301_MARKER: DB = BENCH MARK DISK
 JW1301_SETTING: 66 = SET IN ROCK OUTCROP
 JW1301_STAMPING: BACKBONE 1945
 JW1301_MARK LOGO: USGS
 JW1301_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1301_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1301+STABILITY: POSITION/ELEVATION WELL
 JW1301
 JW1301  HISTORY     - Date     Condition        Report By
 JW1301  HISTORY     - 1945     MONUMENTED       USGS
 JW1301  HISTORY     - 1975     GOOD             USGS
 JW1301  HISTORY     - 19910917 GOOD             MDSHA
 JW1301
 JW1301                          STATION DESCRIPTION
 JW1301
 JW1301'DESCRIBED BY US GEOLOGICAL SURVEY 1975 (JRS)
 JW1301'THE STATION IS ABOUT 9-1/2 MILES NORTH-NORTHEAST OF THOMAS, WEST
 JW1301'VIRGINIA, 9 MILES SOUTH-SOUTHWEST OF OAKLAND, MARYLAND, 2-1/2
 JW1301'MILES EAST OF THE WEST VIRGINIA-MARYLAND STATE LINE, 2 MILES
 JW1301'SOUTHEAST OF REDHOUSE, MARYLAND, ON THE CREST OF BACKBONE MOUNTAIN
 JW1301'AND ON PROPERTY OF THE MARYLAND STATE FOREST SERVICE.  PERMISSION
 JW1301'WAS GRANTED BY MR. GEORGE GILMORE, FOREST SUPERVISOR OF
 JW1301'CUMBERLAND, MARYLAND, TELEPHONE 304-724-8530.
 JW1301'
 JW1301'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 50 AND
 JW1301'219 AT REDHOUSE, GO EASTERLY ON HIGHWAY 50 FOR 2.5 MILES TO A
 JW1301'PAVED SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHERLY ON
 JW1301'THE PAVED ROAD FOR 1 MILE TO A SIDE ROAD RIGHT, TURN RIGHT AND
 JW1301'GO WEST, UPHILL, FOR 0.15 MILE TO A SIDE ROAD LEFT.  CONTINUE
 JW1301'WESTERLY ON THE MAIN ROAD FOR 1.1 MILES TO THE STATION AT THE
 JW1301'BACKBONE MOUNTAIN LOOKOUT TOWER.
 JW1301'
 JW1301'BACKBONE USGS IS A STANDARD U.S. GEOLOGICAL SURVEY BENCH MARK
 JW1301'DISK, STAMPED--BACKBONE 1945---, CEMENTED IN A DRILL HOLE IN A
 JW1301'BOULDER THAT IS 5 INCHES BELOW THE GROUND SURFACE.  IT IS 15 FEET
 JW1301'SOUTH OF THE NORTHWEST LEG OF THE TOWER AND ABOUT 4 FEET LOWER
 JW1301'THAN ROTH.
 JW1301'
 JW1301'BACKBONE USGS RM 1 IS A STANDARD DISK OF THE U.S. GEOLOGICAL
 JW1301'SURVEY, STAMPED--BACKBONE RM NO 1 1945---, CEMENTED IN A DRILL HOLE
 JW1301'IN ROCK OUTCROP THAT PROJECTS 12 INCHES ABOVE THE GROUND.  IT IS
 JW1301'12.8 FEET WEST OF THE NORTHWEST LEG OF THE TOWER, 10 FEET EAST OF
 JW1301'THE WEST EDGE OF THE CLIFF AND ABOUT THE SAME ELEVATION AS ROTH.
 JW1301'
 JW1301'BACKBONE USGS RM 2 IS A STANDARD DISK OF THE U.S. GEOLOGICAL
 JW1301'SURVEY, STAMPED--BACKBONE RM NO 2 1945---, CEMENTED IN A DRILL HOLE
 JW1301'IN A 3 BY 5 FOOT BOULDER THAT PROJECTS 3 FEET ABOVE THE GROUND.
 JW1301'IT IS 24.2 FEET SOUTHWEST OF THE NORTHWEST LEG OF THE TOWER AND
 JW1301'ABOUT THE SAME ELEVATION AS ROTH.
 JW1301
 JW1301                          STATION RECOVERY (1991)
 JW1301
 JW1301'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW1301'THE STATION IS ABOUT 9-1/2 MILES NORTH-NORTHEAST OF THOMAS, WEST
 JW1301'VIRGINIA, 9 MILES SOUTH-SOUTHWEST OF OAKLAND, MARYLAND, 2-1/2
 JW1301'MILES EAST OF THE WEST VIRGINIA-MARYLAND STATE LINE, 2 MILES
 JW1301'SOUTHEAST OF REDHOUSE, MARYLAND, ON THE CREST OF BACKBONE MOUNTAIN
 JW1301'AND ON PROPERTY OF THE MARYLAND STATE FOREST SERVICE.  PERMISSION
 JW1301'WAS GRANTED BY MR. GEORGE GILMORE, FOREST SUPERVISOR OF
 JW1301'CUMBERLAND, MARYLAND, TELEPHONE 304-724-8530.
 JW1301'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 50 AND
 JW1301'219 AT REDHOUSE, GO EASTERLY ON HIGHWAY 50 FOR 2.5 MILES TO A
 JW1301'PAVED SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHERLY ON
 JW1301'THE PAVED ROAD FOR 1 MILE TO A SIDE ROAD RIGHT, TURN RIGHT AND
 JW1301'GO WEST, UPHILL, FOR 0.15 MILE TO A SIDE ROAD LEFT.  CONTINUE
 JW1301'WESTERLY ON THE MAIN ROAD FOR 1.1 MILES TO THE STATION AT THE
 JW1301'BACKBONE MOUNTAIN LOOKOUT TOWER.
 JW1301'BACKBONE USGS IS A STANDARD U.S. GEOLOGICAL SURVEY BENCH MARK
 JW1301'DISK, STAMPED--BACKBONE 1945---, CEMENTED IN A DRILL HOLE IN A
 JW1301'BOULDER THAT IS 5 INCHES BELOW THE GROUND SURFACE.  IT IS 15 FEET
 JW1301'SOUTH OF THE NORTHWEST LEG OF THE TOWER AND ABOUT 4 FEET LOWER
 JW1301'THAN ROTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6112 ***********************************************************************
 JV6112  DESIGNATION -  BACON
 JV6112  PID         -  JV6112
 JV6112  STATE/COUNTY-  MD/BALTIMORE
 JV6112  COUNTRY     -  US
 JV6112  USGS QUAD   -  HEREFORD (2016)
 JV6112
 JV6112                         *CURRENT SURVEY CONTROL
 JV6112  ______________________________________________________________________
 JV6112* NAD 83(1991) POSITION- 39 33 54.03907(N) 076 40 17.45148(W)   ADJUSTED
 JV6112* NAVD 88 ORTHO HEIGHT -   192.    (meters)      630.    (feet) SCALED
 JV6112  ______________________________________________________________________
 JV6112  GEOID HEIGHT    -        -32.286 (meters)                     GEOID18
 JV6112  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 JV6112  HORZ ORDER      -  SECOND
 JV6112
 JV6112.The horizontal coordinates were established by classical geodetic methods
 JV6112.and adjusted by the National Geodetic Survey in January 1992.
 JV6112
 JV6112.The orthometric height was scaled from a topographic map.
 JV6112
 JV6112.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6112.GEOID18 height accuracy estimate available here.
 JV6112
 JV6112.Click photographs - Photos may exist for this station.
 JV6112
 JV6112.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6112
 JV6112. The following values were computed from the NAD 83(1991) position.
 JV6112
 JV6112;                    North         East     Units Scale Factor Converg.
 JV6112;SPC MD       -   210,783.683   428,228.403   MT  1.00002214   +0 12 22.2
 JV6112;SPC MD       -   691,546.13  1,404,946.02   sFT  1.00002214   +0 12 22.2
 JV6112;UTM  18      - 4,380,813.759   356,414.940   MT  0.99985383   -1 03 53.5
 JV6112
 JV6112!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6112!SPC MD       -   0.99997498  x   1.00002214  =   0.99999712
 JV6112!UTM  18      -   0.99997498  x   0.99985383  =   0.99982881
 JV6112
 JV6112:                Primary Azimuth Mark                     Grid Az
 JV6112:SPC MD       -  BIRCH                                    168 55 13.9
 JV6112:UTM  18      -  BIRCH                                    170 11 29.6
 JV6112
 JV6112_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5641480813(NAD 83)
 JV6112
 JV6112|---------------------------------------------------------------------|
 JV6112| PID    Reference Object                     Distance      Geod. Az  |
 JV6112|                                                           dddmmss.s |
 JV6112| CA9924 BACON RM 1                            7.904 METERS 06246     |
 JV6112| JV6110 BIRCH                               APPROX. 4.2 KM 1690736.1 |
 JV6112| CA9925 BACON RM 2                            7.579 METERS 25040     |
 JV6112| JV1478 BACON AZ MK                                        3473345.6 |
 JV6112|---------------------------------------------------------------------|
 JV6112
 JV6112                          SUPERSEDED SURVEY CONTROL
 JV6112
 JV6112  NAD 83(1986)-  39 33 54.03460(N)    076 40 17.45658(W) AD(       ) 2
 JV6112  NAD 83(1986)-  39 33 53.96782(N)    076 40 17.46095(W) AD(       ) 2
 JV6112  NAD 27      -  39 33 53.65400(N)    076 40 18.55760(W) AD(       ) 2
 JV6112
 JV6112.Superseded values are not recommended for survey control.
 JV6112
 JV6112.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6112.See file dsdata.pdf to determine how the superseded data were derived.
 JV6112
 JV6112_MARKER: DS = TRIANGULATION STATION DISK
 JV6112_SETTING: 80 = SET IN A BOULDER
 JV6112_STAMPING: BACON 1959
 JV6112_MARK LOGO: CGS
 JV6112_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6112_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6112+STABILITY: SURFACE MOTION
 JV6112_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6112+SATELLITE: SATELLITE OBSERVATIONS - October 28, 1997
 JV6112
 JV6112  HISTORY     - Date     Condition        Report By
 JV6112  HISTORY     - 1959     MONUMENTED       CGS
 JV6112  HISTORY     - 1969     SEE DESCRIPTION  MDDT
 JV6112  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV6112  HISTORY     - 19971028 GOOD             DMW
 JV6112
 JV6112                          STATION DESCRIPTION
 JV6112
 JV6112'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV6112'STATION IS LOCATED ON THE EXTREME EAST EDGE OF THE HIGHEST POINT
 JV6112'OF A HIGH WOODED HILL WHICH IS ABOUT 1-3/4 MILES SOUTH OF THE
 JV6112'VILLAGE OF HEREFORD.  IT IS ABOUT 0.2 MILES WEST OF U.S. HIGHWAY
 JV6112'111 AND 0.25 MILE NORTH OF COLD BOTTOM ROAD.  STATION
 JV6112'MARK, A STANDARD DISK CEMENTED IN A DRILL HOLE IN A LARGE
 JV6112'BOULDER, IS 6-1/2 FT. WEST OF A TRIANGLE-BLAZED TREE, 15-1/2
 JV6112'FEET SOUTHEAST OF A TRIANGLE BLAZED TREE, AND 3-1/2 FEET WEST
 JV6112'OF A WHITE WITNESS MARKER.  THE DISC IS STAMPED, BACON 1959.
 JV6112'
 JV6112'TO REACH FROM THE JUNCTION OF STATE HIGHWAY 45 AND STATE
 JV6112'HIGHWAY 138 IN HEREFORD, GO SOUTH ON STATE HIGHWAY 45 FOR 1.75
 JV6112'MILES TO A HARD SURFACED ROAD ON THE RIGHT, COLD BOTTOM
 JV6112'ROAD.  TURN RIGHT ON COLD BOTTOM ROAD FOR 0.5 MILES TO AN
 JV6112'OVERPASS AT U.S. HIGHWAY 111.  CROSS OVER U.S. HIGHWAY 111 AND
 JV6112'CONTINUE WESTERLY ON COLD BOTTOM ROAD FOR 0.3 MILE TO A SIDE
 JV6112'ROAD TO THE LEFT, BUFFALO RUN ROAD.  CONTINUE WESTERLY ON COLD
 JV6112'BOTTOM ROAD FOR 0.1 MILE TO ELECTRIC POWER-LINE POLE NO. 26 ON
 JV6112'THE RIGHT OR NORTH SIDE OF ROAD.  THENCE PACK NORTH, THRU
 JV6112'WOODS FOR ABOUT 1/4 MILE TO THE HIGHEST POINT OF THE HILL
 JV6112'AND STATION SITE.
 JV6112'
 JV6112'TO REACH THE AZIMUTH MARK FROM THE OVERPASS AT COLD BOTTOM
 JV6112'ROAD AND U.S. HIGHWAY 111, GO NORTH ON U.S. HIGHWAY 111 FOR
 JV6112'0.95 MILE TO THE AZIMUTH MARK ON THE RIGHT OR EAST SIDE OF THE
 JV6112'ROAD.
 JV6112'
 JV6112'REFERENCE MARK NO. 1, A STANDARD DISK CEMENTED IN A DRILL
 JV6112'HOLE IN A LARGE BOULDER, IS 32 FEET EAST OF A TRIANGLE-BLAZED
 JV6112'TREE AND 22 FEET NORTHEAST OF A TRIANGLE-BLAZED TREE.  THE DISK
 JV6112'IS STAMPED, BACON NO. 1 1959.
 JV6112'
 JV6112'REFERENCE MARK NO. 2, A STANDARD DISK CEMENTED IN A DRILL
 JV6112'HOLE IN A LARGE BOULDER, IS 4 FEET NORTHEAST OF A 15 INCH TREE
 JV6112'AND 24 FEET SOUTH OF A TRIANGLE-BLAZED TREE.  THE DISK IS
 JV6112'STAMPED, BACON NO. 2 1959.
 JV6112'
 JV6112'AZIMUTH MARK IS A STANDARD DISK SET IN THE TOP OF A 12 BY 12
 JV6112'INCH CONCRETE MONUMENT THAT PROJECTS ABOUT 2 INCHES.  THE DISK
 JV6112'IS STAMPED, BACON 1959.  IT IS 2-1/2 FEET WEST OF A WHITE WITNESS
 JV6112'MARKER AND 20 FEET EAST OF THE CENTERLINE OF U.S. HIGHWAY 111.
 JV6112
 JV6112                          STATION RECOVERY (1969)
 JV6112
 JV6112'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1969
 JV6112'BACON AZ. MK. 1959 - MARKER KNOCKED OUT DUE TO WIDENING OF
 JV6112'SHOULDER OF ROADWAY.  DISK SENT TO NORFOLK REGIONAL OFFICE C AND GS.
 JV6112
 JV6112                          STATION RECOVERY (1994)
 JV6112
 JV6112'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV6112'MARK NOT FOUND.
 JV6112
 JV6112                          STATION RECOVERY (1997)
 JV6112
 JV6112'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6112'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1478 ***********************************************************************
 JV1478  DESIGNATION -  BACON AZ MK
 JV1478  PID         -  JV1478
 JV1478  STATE/COUNTY-  MD/BALTIMORE
 JV1478  COUNTRY     -  US
 JV1478  USGS QUAD   -  HEREFORD (2016)
 JV1478
 JV1478                         *CURRENT SURVEY CONTROL
 JV1478  ______________________________________________________________________
 JV1478* NAD 83(1986) POSITION- 39 34 30.     (N) 076 40 26.     (W)   SCALED
 JV1478* NAVD 88 ORTHO HEIGHT -   140.986 (meters)      462.55  (feet) ADJUSTED
 JV1478  ______________________________________________________________________
 JV1478  GEOID HEIGHT    -        -32.275 (meters)                     GEOID18
 JV1478  DYNAMIC HEIGHT  -        140.915 (meters)      462.32  (feet) COMP
 JV1478  MODELED GRAVITY -    980,115.6   (mgal)                       NAVD 88
 JV1478
 JV1478  VERT ORDER      -  SECOND    CLASS 0
 JV1478
 JV1478.The horizontal coordinates were scaled from a map and have
 JV1478.an estimated accuracy of +/- 6 seconds.
 JV1478
 JV1478.The orthometric height was determined by differential leveling and
 JV1478.adjusted by the NATIONAL GEODETIC SURVEY
 JV1478.in June 1991.
 JV1478
 JV1478.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1478.GEOID18 height accuracy estimate available here.
 JV1478
 JV1478.Click photographs - Photos may exist for this station.
 JV1478
 JV1478.The dynamic height is computed by dividing the NAVD 88
 JV1478.geopotential number by the normal gravity value computed on the
 JV1478.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1478.degrees latitude (g = 980.6199 gals.).
 JV1478
 JV1478.The modeled gravity was interpolated from observed gravity values.
 JV1478
 JV1478;                    North         East    Units  Estimated Accuracy
 JV1478;SPC MD       -   211,890.      428,020.      MT  (+/- 180 meters Scaled)
 JV1478
 JV1478_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ562819(NAD 83)
 JV1478
 JV1478                          SUPERSEDED SURVEY CONTROL
 JV1478
 JV1478  NGVD 29 (11/26/84)  141.193  (m)          463.23   (f) ADJUSTED    2 0
 JV1478
 JV1478.Superseded values are not recommended for survey control.
 JV1478
 JV1478.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1478.See file dsdata.pdf to determine how the superseded data were derived.
 JV1478
 JV1478_MARKER: DZ = AZIMUTH MARK DISK
 JV1478_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1478_STAMPING: BACON 1959
 JV1478_MARK LOGO: CGS
 JV1478_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1478+STABILITY: SURFACE MOTION
 JV1478
 JV1478  HISTORY     - Date     Condition        Report By
 JV1478  HISTORY     - 1959     MONUMENTED       CGS
 JV1478  HISTORY     - 20010815 MARK NOT FOUND   MDSHA
 JV1478
 JV1478                          STATION DESCRIPTION
 JV1478
 JV1478'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1478'6.9 MI NW FROM MARBLE HILL.
 JV1478'1.0 MILE WEST ALONG SHAWAN ROAD FROM ITS JUNCTION WITH STATE
 JV1478'HIGHWAY 45 AT MARBLE HILL, THENCE 5.9 MILES NORTH ALONG NEW
 JV1478'U.S. HIGHWAY 111, ABOUT 0.05 MILE NORTH OF AN ABANDONED SITE OF AN
 JV1478'OLD SAWMILL, 21 FEET NORTHEAST OF THE CENTER LINE OF THE
 JV1478'NORTHBOUND LANE, 3 FEET NORTHWEST OF A METAL WITNESS POST,
 JV1478'ABOUT LEVEL WITH THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST
 JV1478'PROJECTING 3 INCHES ABOVE THE HIGHWAY.  NOTE-- THIS MARK MAY BE
 JV1478'REACHED BY GOING 0.45 MILE WEST ALONG STATE HIGHWAY 137 FROM
 JV1478'ITS JUNCTION WITH STATE HIGHWAY 45 AT HEREFORD, THENCE 1.2 MILES
 JV1478'SOUTH ALONG NEW U.S. HIGHWAY 111.
 JV1478
 JV1478                          STATION RECOVERY (2001)
 JV1478
 JV1478'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1478'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7380 ***********************************************************************
 HV7380  DESIGNATION -  BADEN
 HV7380  PID         -  HV7380
 HV7380  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7380  COUNTRY     -  US
 HV7380  USGS QUAD   -  BRANDYWINE (2016)
 HV7380
 HV7380                         *CURRENT SURVEY CONTROL
 HV7380  ______________________________________________________________________
 HV7380* NAD 83(2011) POSITION- 38 39 37.23150(N) 076 46 16.93297(W)   ADJUSTED
 HV7380* NAD 83(2011) ELLIP HT-    32.028 (meters)        (06/27/12)   ADJUSTED
 HV7380* NAD 83(2011) EPOCH   -  2010.00
 HV7380* NAVD 88 ORTHO HEIGHT -    65.2   (meters)      214.    (feet) GPS OBS
 HV7380  ______________________________________________________________________
 HV7380  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV7380  GEOID HEIGHT    -        -33.560 (meters)                     GEOID93
 HV7380  GEOID HEIGHT    -        -33.221 (meters)                     GEOID18
 HV7380  NAD 83(2011) X  -  1,141,210.497 (meters)                     COMP
 HV7380  NAD 83(2011) Y  - -4,854,663.119 (meters)                     COMP
 HV7380  NAD 83(2011) Z  -  3,962,963.657 (meters)                     COMP
 HV7380  LAPLACE CORR    -         -4.66  (seconds)                    DEFLEC18
 HV7380
 HV7380  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV7380  Standards:
 HV7380         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV7380            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV7380  -------------------------------------------------------------------
 HV7380  NETWORK    1.26   2.84           0.53   0.50   1.45      0.02285308
 HV7380  -------------------------------------------------------------------
 HV7380  Click here for local accuracies and other accuracy information.
 HV7380
 HV7380.The horizontal coordinates were established by GPS observations
 HV7380.and adjusted by the National Geodetic Survey in June 2012.
 HV7380
 HV7380.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV7380.been affixed to the stable North American tectonic plate. See 
 HV7380.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV7380
 HV7380.The horizontal coordinates are valid at the epoch date displayed above
 HV7380.which is a decimal equivalence of Year/Month/Day.
 HV7380
 HV7380.The orthometric height was determined by GPS observations and a
 HV7380.high-resolution geoid model.
 HV7380
 HV7380.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7380.GEOID18 height accuracy estimate available here.
 HV7380
 HV7380.Click photographs - Photos may exist for this station.
 HV7380
 HV7380.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV7380
 HV7380.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7380
 HV7380.The ellipsoidal height was determined by GPS observations
 HV7380.and is referenced to NAD 83.
 HV7380
 HV7380. The following values were computed from the NAD 83(2011) position.
 HV7380
 HV7380;                    North         East     Units Scale Factor Converg.
 HV7380;SPC MD       -   110,326.763   419,898.833   MT  0.99995688   +0 08 36.6
 HV7380;SPC MD       -   361,963.72  1,377,618.09   sFT  0.99995688   +0 08 36.6
 HV7380;UTM  18      - 4,280,574.059   345,877.857   MT  0.99989252   -1 06 24.5
 HV7380
 HV7380!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7380!SPC MD       -   0.99999497  x   0.99995688  =   0.99995185
 HV7380!UTM  18      -   0.99999497  x   0.99989252  =   0.99988750
 HV7380
 HV7380:                Primary Azimuth Mark                     Grid Az
 HV7380:SPC MD       -  ROLYAN                                   027 56 10.5
 HV7380:UTM  18      -  ROLYAN                                   029 11 11.6
 HV7380
 HV7380_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4587780574(NAD 83)
 HV7380
 HV7380|---------------------------------------------------------------------|
 HV7380| PID    Reference Object                     Distance      Geod. Az  |
 HV7380|                                                           dddmmss.s |
 HV7380| HV7367 VORTAC NOTTINGHAM OTT               APPROX. 5.6 KM 0243702.6 |
 HV7380| CX2050 BADEN RM 1                           93.512 METERS 02641     |
 HV7380| HV7366 ROLYAN                              APPROX. 5.6 KM 0280447.1 |
 HV7380| HV7363 WESTWOOD ATT MICROWAVE              APPROX. 4.9 KM 1074847.4 |
 HV7380| CX2051 BADEN RM 2                           34.808 METERS 11410     |
 HV7380| CX2052 BADEN RM 3                          112.523 METERS 16303     |
 HV7380|---------------------------------------------------------------------|
 HV7380
 HV7380                          SUPERSEDED SURVEY CONTROL
 HV7380
 HV7380  NAD 83(2007)-  38 39 37.23164(N)    076 46 16.93402(W) AD(2002.00) 0
 HV7380  ELLIP H (02/10/07)   32.003  (m)                       GP(2002.00)    
 HV7380  ELLIP H (08/30/02)   31.998  (m)                       GP(       ) 4 2
 HV7380  NAD 83(1993)-  38 39 37.23111(N)    076 46 16.93417(W) AD(       ) 1
 HV7380  ELLIP H (11/14/94)   32.043  (m)                       GP(       ) 4 2
 HV7380  ELLIP H (09/09/94)   32.026  (m)                       GP(       ) 4 1
 HV7380  NAD 83(1991)-  38 39 37.23045(N)    076 46 16.93473(W) AD(       ) 1
 HV7380  NAD 83(1986)-  38 39 37.22877(N)    076 46 16.94968(W) AD(       ) 1
 HV7380  NAD 27      -  38 39 36.80617(N)    076 46 18.06547(W) AD(       ) 1
 HV7380  NGVD 29 (07/19/86)   65.3    (m)          214.     (f) VERT ANG       
 HV7380
 HV7380.Superseded values are not recommended for survey control.
 HV7380
 HV7380.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7380.See file dsdata.pdf to determine how the superseded data were derived.
 HV7380
 HV7380_MARKER: DS = TRIANGULATION STATION DISK
 HV7380_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7380_STAMPING: BADEN 1970
 HV7380_MARK LOGO: CGS
 HV7380_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV7380_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7380+STABILITY: SURFACE MOTION
 HV7380_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7380+SATELLITE: SATELLITE OBSERVATIONS - March 31, 1993
 HV7380
 HV7380  HISTORY     - Date     Condition        Report By
 HV7380  HISTORY     - 1970     MONUMENTED       NGS
 HV7380  HISTORY     - 1970     GOOD             NGS
 HV7380  HISTORY     - 1978     GOOD             AIRSUR
 HV7380  HISTORY     - 19930331 GOOD             MSI
 HV7380
 HV7380                          STATION DESCRIPTION
 HV7380
 HV7380'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7380'THE STATION IS ON THE GROUNDS OF THE ELEMENTARY SCHOOL IN BADEN.
 HV7380'
 HV7380'TO REACH THE STATION FROM THE FIRE STATION IN BADEN, GO EAST ON
 HV7380'STATE HIGHWAY 381 FOR 0.15 MILE TO THE JUNCTION WITH BADEN-WESTWOOD
 HV7380'ROAD.  TURN LEFT AND GO NORTH-EAST ON BADEN-WESTWOOD ROAD FOR 0.4
 HV7380'MILE TO A CHURCH ON THE LEFT AND A SCHOOL AND THE STATION ON THE
 HV7380'RIGHT.
 HV7380'
 HV7380'STATION MARK IS A STANDARD DISK, STAMPED BADEN 1970, SET IN THE TOP
 HV7380'OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS FLUSH WITH
 HV7380'THE GROUND SURFACE.  IT IS 103.0 FEET SOUTH OF THE CENTERLINE OF
 HV7380'BADEN-WESTWOOD ROAD, 44.0 FEET EAST OF THE CENTERLINE OF
 HV7380'HORSEHEAD ROAD AND 19.3 FEET SOUTH OF THE SOUTH END OF A BRICK
 HV7380'WALL.  THE UNDERGROUND MARK IS 40 INCHES BELOW THE GROUND
 HV7380'SURFACE.
 HV7380'
 HV7380'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED BADEN NO 1 1970,
 HV7380'CEMENTED IN A DRILL HOLE IN A CURB.  IT IS 107.0 FEET WEST OF THE
 HV7380'NORTHWEST CORNER OF THE SCHOOLHOUSE, 52.0 FEET SOUTH OF THE
 HV7380'CENTERLINE OF BADEN-WESTWOOD ROAD, 16.0 FEET EAST OF THE
 HV7380'CENTERLINE OF SCHOOL DRIVEWAY, 6.2 FEET WEST-SOUTHWEST OF THE
 HV7380'NORTH EDGE OF SIDEWALK AND ABOUT 1 FOOT LOWER THAN THE STATION.
 HV7380'
 HV7380'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED BADEN NO 2 1970,
 HV7380'CEMENTED IN A DRILL HOLE IN A CURB.  IT IS 112.0 FEET WEST OF THE
 HV7380'SOUTHWEST CORNER OF THE SCHOOLHOUSE, 16.0 FEET WEST OF THE EAST
 HV7380'END OF THE SIDEWALK, 6.5 FEET NORTH OF THE SOUTH EDGE OF THE
 HV7380'SIDEWALK AND ABOUT 1 FOOT LOWER THAN THE STATION.
 HV7380'
 HV7380'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED BADEN NO 3 1970, SET IN
 HV7380'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV7380'FLUSH WITH THE GROUND SURFACE.  IT IS 22.0 FEET WEST OF THE
 HV7380'CENTERLINE OF HORSEHEAD ROAD, 1.0 FEET NORTH-NORTHEAST OF A
 HV7380'WITNESS POST AND ABOUT 1 FOOT LOWER THAN THE STATION.
 HV7380'
 HV7380'REFERENCE MARK 2 TO REFERENCE MARK 3 OBSTRUCTED.
 HV7380
 HV7380                          STATION RECOVERY (1970)
 HV7380
 HV7380'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 HV7380'RECOVERED IN GOOD CONDITION.
 HV7380
 HV7380                          STATION RECOVERY (1978)
 HV7380
 HV7380'RECOVERY NOTE BY AIR SURVEY CORPORATION 1978 (EW)
 HV7380'BADEN 1970 RECOVERED GOOD.
 HV7380'
 HV7380'BADEN RM 1,2 AND 3 RECOVERED GOOD.
 HV7380'
 HV7380'THE DESCRIPTION OF V. WILSON IS ADEQUATE.
 HV7380
 HV7380                          STATION RECOVERY (1993)
 HV7380
 HV7380'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV7380'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6993 ***********************************************************************
 HV6993  DESIGNATION -  BAILEY MSFC 1908
 HV6993  PID         -  HV6993
 HV6993  STATE/COUNTY-  MD/ST MARYS
 HV6993  COUNTRY     -  US
 HV6993  USGS QUAD   -  STRATFORD HALL (2019)
 HV6993
 HV6993                         *CURRENT SURVEY CONTROL
 HV6993  ______________________________________________________________________
 HV6993* NAD 83(1993) POSITION- 38 14 28.85523(N) 076 46 38.55321(W)   ADJUSTED
 HV6993* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6993  ______________________________________________________________________
 HV6993  GEOID HEIGHT    -        -33.711 (meters)                     GEOID18
 HV6993  LAPLACE CORR    -         -1.23  (seconds)                    DEFLEC18
 HV6993  HORZ ORDER      -  THIRD
 HV6993
 HV6993.The horizontal coordinates were established by classical geodetic methods
 HV6993.and adjusted by the National Geodetic Survey in November 1994.
 HV6993
 HV6993.The orthometric height was scaled from a topographic map.
 HV6993
 HV6993.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6993.GEOID18 height accuracy estimate available here.
 HV6993
 HV6993.Click photographs - Photos may exist for this station.
 HV6993
 HV6993.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6993
 HV6993. The following values were computed from the NAD 83(1993) position.
 HV6993
 HV6993;                    North         East     Units Scale Factor Converg.
 HV6993;SPC MD       -    63,816.194   419,489.556   MT  1.00001072   +0 08 23.0
 HV6993;SPC MD       -   209,370.30  1,376,275.32   sFT  1.00001072   +0 08 23.0
 HV6993;SPC VA N     - 2,065,203.195 3,650,791.701   MT  0.99996980   +1 04 30.4
 HV6993;SPC VA N     - 6,775,587.48 11,977,639.11   sFT  0.99996980   +1 04 30.4
 HV6993;UTM  18      - 4,234,087.279   344,458.063   MT  0.99989796   -1 06 01.3
 HV6993
 HV6993!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6993!SPC MD       -   1.00000517  x   1.00001072  =   1.00001589
 HV6993!SPC VA N     -   1.00000517  x   0.99996980  =   0.99997497
 HV6993!UTM  18      -   1.00000517  x   0.99989796  =   0.99990313
 HV6993
 HV6993:                Primary Azimuth Mark                     Grid Az
 HV6993:SPC MD       -  WATERLOO MSFC 1908                       189 52 39.4
 HV6993:SPC VA N     -  WATERLOO MSFC 1908                       188 56 32.0
 HV6993:UTM  18      -  WATERLOO MSFC 1908                       191 07 03.7
 HV6993
 HV6993_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4445834087(NAD 83)
 HV6993
 HV6993|---------------------------------------------------------------------|
 HV6993| PID    Reference Object                     Distance      Geod. Az  |
 HV6993|                                                           dddmmss.s |
 HV6993| HV6997 WATERLOO MSFC 1908                  APPROX. 1.1 KM 1900102.4 |
 HV6993|---------------------------------------------------------------------|
 HV6993
 HV6993                          SUPERSEDED SURVEY CONTROL
 HV6993
 HV6993  NAD 83(1991)-  38 14 28.85369(N)    076 46 38.55862(W) AD(       ) 3
 HV6993  NAD 83(1986)-  38 14 28.85520(N)    076 46 38.56894(W) AD(       ) 3
 HV6993  NAD 27      -  38 14 28.35800(N)    076 46 39.69400(W) AD(       ) 3
 HV6993  USSD        -  38 14 28.96300(N)    076 46 39.69100(W) AD(       ) 3
 HV6993
 HV6993.Superseded values are not recommended for survey control.
 HV6993
 HV6993.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6993.See file dsdata.pdf to determine how the superseded data were derived.
 HV6993
 HV6993_MARKER: H = DRILL HOLE
 HV6993_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6993_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6993+STABILITY: SURFACE MOTION
 HV6993
 HV6993  HISTORY     - Date     Condition        Report By
 HV6993  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6993
 HV6993                          STATION DESCRIPTION
 HV6993
 HV6993'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6993'STATION IS ON THE NORTHEASTERN SHORE OF ST. CATHERINE SOUND, ABOUT
 HV6993'3/4 MILE E BY N OF EASTERN END OF ST. CATHERINE ISLAND, AND 1 MILE
 HV6993'N OF POTOMAC RIVER, ON SHELLY GROUND ON THE BAILEY PROPERTY, ABOUT
 HV6993'5 FEET ABOVE HIGH-WATER MARK, 10 YARDS NE OF HIGH-WATER MARK, 7
 HV6993'YARDS NE OF WIRE FENCE, 35 YARDS SSE OF CORNER OF WIRE FENCE, 30
 HV6993'YARDS NNW OF CORNER OF WIRE AND WOODEN FENCES, 25 YARDS N OF
 HV6993'BAILEY HOUSE, AND 40 YARDS W BY S OF CORNER OF WOODEN FENCE.
 HV6993'
 HV6993'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6993'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6993'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6993'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6993'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6993'AS FOLLOWS--W CHIMNEY OF HOUSE ON WATERLOO POINT, 3/4 MILE, S 9
 HV6993'DEG 32 MIN W.  NAIL IN BLAZE IN FIRST OF SIX CEDAR TREES, 10.76
 HV6993'METERS (35.3 FEET), S 29 DEG 16 MIN W.  RIGHT CHIMNEY OF SMALL
 HV6993'HOUSE ON ST. CATHERINE ISLAND, 1 MILE, S 79 DEG 51 MIN W.  NAIL IN
 HV6993'BLAZE IN ONE OF FOUR 3-INCH CEDAR TREES, 12.37 METERS (40.6 FEET),
 HV6993'N 74 DEG 42 MIN W. NAIL IN BLAZE IN 8-INCH CEDAR TREE, 27.82
 HV6993'METERS (91.3 FEET), N 43 DEG 12 MIN W.  CORNER OF WIRE FENCE,
 HV6993'32.06 METERS (105.2 FEET), N 41 DEG 42 MIN W.  CHIMNEY ON HOUSE,
 HV6993'150 YARDS, N 2 DEG 27 MIN E.  CORNER OF WOODEN FENCE, 37.49 METERS
 HV6993'(123.0 FEET), N 87 DEG 41 MIN E.  CHIMNEY OF BAILEY HOUSE, 25
 HV6993'YARDS, S 64 DEG 45 MIN E.  JUNCTION OF WIRE AND WOODEN FENCES,
 HV6993'26.22 METERS (86.0 FEET), S 13 DEG 36 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6197 ***********************************************************************
 DN6197  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6197  DESIGNATION -  BAINBRIDGE 01
 DN6197  PID         -  DN6197
 DN6197  STATE/COUNTY-  MD/CECIL
 DN6197  COUNTRY     -  US
 DN6197  USGS QUAD   -  HAVRE DE GRACE (2016)
 DN6197
 DN6197                         *CURRENT SURVEY CONTROL
 DN6197  ______________________________________________________________________
 DN6197* NAD 83(2011) POSITION- 39 36 48.33614(N) 076 04 17.69034(W)   ADJUSTED
 DN6197* NAD 83(2011) ELLIP HT-    82.507 (meters)        (06/27/12)   ADJUSTED
 DN6197* NAD 83(2011) EPOCH   -  2010.00
 DN6197* NAVD 88 ORTHO HEIGHT -   115.54  (meters)      379.1   (feet) GPS OBS
 DN6197  ______________________________________________________________________
 DN6197  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6197  GEOID HEIGHT    -        -33.013 (meters)                     GEOID03
 DN6197  GEOID HEIGHT    -        -33.039 (meters)                     GEOID18
 DN6197  NAD 83(2011) X  -  1,184,350.793 (meters)                     COMP
 DN6197  NAD 83(2011) Y  - -4,775,580.418 (meters)                     COMP
 DN6197  NAD 83(2011) Z  -  4,045,065.512 (meters)                     COMP
 DN6197  LAPLACE CORR    -         -1.81  (seconds)                    DEFLEC18
 DN6197
 DN6197  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6197  Standards:
 DN6197         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6197            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6197  -------------------------------------------------------------------
 DN6197  NETWORK    0.49   0.98           0.22   0.17   0.50      0.08322389
 DN6197  -------------------------------------------------------------------
 DN6197  Click here for local accuracies and other accuracy information.
 DN6197
 DN6197.The horizontal coordinates were established by GPS observations
 DN6197.and adjusted by the National Geodetic Survey in June 2012.
 DN6197
 DN6197.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6197.been affixed to the stable North American tectonic plate. See 
 DN6197.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6197
 DN6197.The horizontal coordinates are valid at the epoch date displayed above
 DN6197.which is a decimal equivalence of Year/Month/Day.
 DN6197
 DN6197.The orthometric height was determined by GPS observations and a
 DN6197.high-resolution geoid model using precise GPS observation and
 DN6197.processing techniques.
 DN6197
 DN6197.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6197.GEOID18 height accuracy estimate available here.
 DN6197
 DN6197.Click photographs - Photos may exist for this station.
 DN6197
 DN6197.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6197
 DN6197.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6197
 DN6197.The ellipsoidal height was determined by GPS observations
 DN6197.and is referenced to NAD 83.
 DN6197
 DN6197. The following values were computed from the NAD 83(2011) position.
 DN6197
 DN6197;                    North         East     Units Scale Factor Converg.
 DN6197;SPC MD       -   216,513.923   479,727.798   MT  1.00003268   +0 34 57.7
 DN6197;SPC MD       -   710,346.10  1,573,906.95   sFT  1.00003268   +0 34 57.7
 DN6197;UTM  18      - 4,385,401.285   408,015.472   MT  0.99970417   -0 40 59.9
 DN6197
 DN6197!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6197!SPC MD       -   0.99998706  x   1.00003268  =   1.00001974
 DN6197!UTM  18      -   0.99998706  x   0.99970417  =   0.99969123
 DN6197
 DN6197_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0801585401(NAD 83)
 DN6197
 DN6197                          SUPERSEDED SURVEY CONTROL
 DN6197
 DN6197  NAD 83(2007)-  39 36 48.33606(N)    076 04 17.69130(W) AD(2002.00) 1
 DN6197  ELLIP H (02/23/12)   82.540  (m)                       GP(2002.00) 4 1
 DN6197
 DN6197.Superseded values are not recommended for survey control.
 DN6197
 DN6197.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6197.See file dsdata.pdf to determine how the superseded data were derived.
 DN6197
 DN6197_MARKER: DD = SURVEY DISK
 DN6197_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6197_STAMPING: BAINBRIDGE 01 2008
 DN6197_MARK LOGO: MD-015
 DN6197_PROJECTION: FLUSH
 DN6197_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6197_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6197+STABILITY: SURFACE MOTION
 DN6197_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6197+SATELLITE: SATELLITE OBSERVATIONS - January 27, 2023
 DN6197
 DN6197  HISTORY     - Date     Condition        Report By
 DN6197  HISTORY     - 20081204 MONUMENTED       GWS
 DN6197  HISTORY     - 20230127 GOOD             STUBY
 DN6197
 DN6197                          STATION DESCRIPTION
 DN6197
 DN6197'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6197'THE STATION IS LOCATED 2.4 MI (3.9 KM) EAST OF PORT DEPOSIT, 1.0 MI
 DN6197'(1.6 KM) NORTH OF CRAIGTOWN.
 DN6197'
 DN6197'TO REACH THE STATION FROM THE JUNCTION OF JACOB TOME MEMORIAL HIGHWAY
 DN6197'(MD ROUTE 276) AND PERRYLAWN DRIVE (MD ROUTE 275), PROCEED SOUTHEAST
 DN6197'ON PERRYLAWN DRIVE (MD ROUTE 275) FOR 1.14 MI (1.8 KM) TO THE STATION
 DN6197'ON THE RIGHT.
 DN6197'
 DN6197'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6197'CONCRETE MONUMENT ON THE SOUTHWEST SIDE OF PERRYLAWN DRIVE (MD ROUTE
 DN6197'275), JUST OFF THE ROAD SHOULDER, 7.0 FT (2.1 M) SOUTHWEST OF THE EDGE
 DN6197'OF PAVING, 3.5 FT (1.1 M) NORTHEAST OF A BARBED WIRE FENCE AND 38.0 FT
 DN6197'(11.6 M) SOUTHEAST OF A WOODEN FENCE POST AT THE INTERSECTION OF TWO
 DN6197'FENCES.
 DN6197
 DN6197                          STATION RECOVERY (2023)
 DN6197
 DN6197'RECOVERY NOTE BY STUBY SUBSURFACE INVESTIGATIONS, LLC 2023 (SSI)
 DN6197'LOCATED A FEW FEET FROM SOUTHWEST EDGE OF PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1585 ***********************************************************************
 HV1585  DESIGNATION -  BAKER
 HV1585  PID         -  HV1585
 HV1585  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1585  COUNTRY     -  US
 HV1585  USGS QUAD   -  NORTH BEACH (2016)
 HV1585
 HV1585                         *CURRENT SURVEY CONTROL
 HV1585  ______________________________________________________________________
 HV1585* NAD 83(1991) POSITION- 38 43 23.14181(N) 076 31 35.33161(W)   ADJUSTED
 HV1585* NAVD 88 ORTHO HEIGHT -     2.462 (meters)        8.08  (feet) ADJUSTED
 HV1585  ______________________________________________________________________
 HV1585  GEOID HEIGHT    -        -33.649 (meters)                     GEOID18
 HV1585  LAPLACE CORR    -         -4.52  (seconds)                    DEFLEC18
 HV1585  DYNAMIC HEIGHT  -          2.461 (meters)        8.07  (feet) COMP
 HV1585  MODELED GRAVITY -    980,051.7   (mgal)                       NAVD 88
 HV1585
 HV1585  HORZ ORDER      -  FIRST
 HV1585  VERT ORDER      -  SECOND    CLASS I
 HV1585
 HV1585.The horizontal coordinates were established by classical geodetic methods
 HV1585.and adjusted by the National Geodetic Survey in January 1992.
 HV1585
 HV1585.The orthometric height was determined by differential leveling and
 HV1585.adjusted by the NATIONAL GEODETIC SURVEY
 HV1585.in December 2004.
 HV1585
 HV1585.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1585.GEOID18 height accuracy estimate available here.
 HV1585
 HV1585.Click photographs - Photos may exist for this station.
 HV1585
 HV1585.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1585
 HV1585.The dynamic height is computed by dividing the NAVD 88
 HV1585.geopotential number by the normal gravity value computed on the
 HV1585.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1585.degrees latitude (g = 980.6199 gals.).
 HV1585
 HV1585.The modeled gravity was interpolated from observed gravity values.
 HV1585
 HV1585. The following values were computed from the NAD 83(1991) position.
 HV1585
 HV1585;                    North         East     Units Scale Factor Converg.
 HV1585;SPC MD       -   117,374.495   441,176.545   MT  0.99995338   +0 17 49.9
 HV1585;SPC MD       -   385,086.16  1,447,426.71   sFT  0.99995338   +0 17 49.9
 HV1585;UTM  18      - 4,287,154.790   367,302.229   MT  0.99981684   -0 57 18.1
 HV1585
 HV1585!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1585!SPC MD       -   1.00000489  x   0.99995338  =   0.99995827
 HV1585!UTM  18      -   1.00000489  x   0.99981684  =   0.99982173
 HV1585
 HV1585:                Primary Azimuth Mark                     Grid Az
 HV1585:SPC MD       -  SHARPS ISLAND LIGHTHOUSE                 125 03 35.9
 HV1585:UTM  18      -  SHARPS ISLAND LIGHTHOUSE                 126 18 43.9
 HV1585
 HV1585_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6730287154(NAD 83)
 HV1585
 HV1585|---------------------------------------------------------------------|
 HV1585| PID    Reference Object                     Distance      Geod. Az  |
 HV1585|                                                           dddmmss.s |
 HV1585| HV6143 BEACON 1                            APPROX. 2.8 KM 0584830.9 |
 HV1585| HV7259 BEACON D                            APPROX. 2.3 KM 1063929.5 |
 HV1585| HV6142 SHARPS ISLAND LIGHTHOUSE            APPROX.16.1 KM 1252125.8 |
 HV1585| HV7258 BEACON E                            APPROX. 3.4 KM 1414303.7 |
 HV1585| HV7256 BEACON 2                            APPROX. 4.8 KM 1600201.0 |
 HV1585| HV1586 BAKER RM 2                           23.295 METERS 23905     |
 HV1585| HV1584 BAKER RM 1                           23.680 METERS 31747     |
 HV1585|---------------------------------------------------------------------|
 HV1585
 HV1585                          SUPERSEDED SURVEY CONTROL
 HV1585
 HV1585  NAD 83(1986)-  38 43 23.13988(N)    076 31 35.34496(W) AD(       ) 1
 HV1585  NAD 27      -  38 43 22.71400(N)    076 31 36.51000(W) AD(       ) 1
 HV1585  NAVD 88 (06/15/91)    2.457  (m)            8.06   (f) SUPERSEDED  1 2
 HV1585  NGVD 29               2.70   (m)            8.9    (f) LEVELING    3  
 HV1585  NGVD 29 (11/26/84)    2.698  (m)            8.85   (f) ADJUSTED    1 2
 HV1585
 HV1585.Superseded values are not recommended for survey control.
 HV1585
 HV1585.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1585.See file dsdata.pdf to determine how the superseded data were derived.
 HV1585
 HV1585_MARKER: DS = TRIANGULATION STATION DISK
 HV1585_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1585_STAMPING: BAKER 1933
 HV1585_MARK LOGO: CGS
 HV1585_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV1585_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1585+STABILITY: SURFACE MOTION
 HV1585_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1585+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2000
 HV1585
 HV1585  HISTORY     - Date     Condition        Report By
 HV1585  HISTORY     - 1933     MONUMENTED       CGS
 HV1585  HISTORY     - 1934     GOOD             CGS
 HV1585  HISTORY     - 1971     GOOD             NGS
 HV1585  HISTORY     - 1972     GOOD             NGS
 HV1585  HISTORY     - 1973     GOOD             NGS
 HV1585  HISTORY     - 1978     GOOD             NGS
 HV1585  HISTORY     - 1984     GOOD             USPSQD
 HV1585  HISTORY     - 1987     GOOD             NOS
 HV1585  HISTORY     - 20000630 GOOD             MDSHA
 HV1585
 HV1585                          STATION DESCRIPTION
 HV1585
 HV1585'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (ERM)
 HV1585'LOCATED ON THE WESTERN SHORE OF CHESAPEAKE BAY, ABOUT 1/2 MILE
 HV1585'S OF HOLLAND POINT, 25 METERS W OF SHORE LINE AND IMMEDIATELY IN
 HV1585'FRONT OF THE COTTAGE OWNED BY MR. A.R. YOUNG.  SHORE LINE AT
 HV1585'THIS POINT IS A 7-FOOT BANK, ABOUT 30 FEET OF IT WASHED AWAY IN
 HV1585'THE AUGUST 1933 STORM.  THE LAND AT THIS POINT IS HEAVILY WOODED
 HV1585'AND IT WAS NECESSARY TO TOP A FEW TREES ON LINE TO EACH ONE OF
 HV1585'THE OBSERVED STATIONS.  A 35-FOOT TRIPOD AND SCAFFOLD WAS USED,
 HV1585'THIS HEIGHT BEING NECESSARY ONLY TO SEE OVER THE TREES.
 HV1585'
 HV1585'STATION MARK IS A STANDARD BRONZE DISK SET IN CONCRETE IN
 HV1585'THE TOP OF A TILE.
 HV1585'
 HV1585'REFERENCE MARKS NOS.1 AND 2 ARE STANDARD BRONZE DISKS SET IN
 HV1585'CONCRETE.
 HV1585'
 HV1585'REFERENCE MARK NO.1 IS LOCATED AT THE SE CORNER OF THE HOUSE
 HV1585'OWNED BY MRS. WM. MORELAND, AND REFERENCE MARK NO.2 IS AT THE
 HV1585'NE CORNER OF THE HOUSE OWNED BY MR. A.L. LOWE.
 HV1585'
 HV1585'STATION IS REACHED BY BOAT OR BY FOLLOWING THE ROAD TO THE
 HV1585'NORTHWARD FROM NORTH BEACH.
 HV1585
 HV1585                          STATION RECOVERY (1934)
 HV1585
 HV1585'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV1585'THE OLD DESCRIPTION IS NOT ADEQUATE.  THIS FIRST-ORDER STATION
 HV1585'IS LOCATED ABOUT 1/2 MILE S OF HOLLAND POINT, E OF A.R. YOUNGS
 HV1585'HOUSE, ABOUT 23 PACES W OF THE CHESAPEAKE BAY SHORE LINE, 20.1
 HV1585'METERS (66 FEET) E OF THE NE CORNER OF A BUNGALOW WITH A SIGN
 HV1585'CAROLINE OVER THE FRONT DOOR, AND 15.1 METERS (50 FEET) NE OF A
 HV1585'36-INCH OAK TREE.
 HV1585'
 HV1585'REFERENCE MARK NO.1 IS 23.635 METERS (77.54 FEET) NW OF THE
 HV1585'STATION, 2.83 METERS (9.3 FEET) NE OF THE NE CORNER OF WM. MORELANDS
 HV1585'HOUSE, AND 2.19 METERS (7.2 FEET) E OF THE SE CORNER OF ANOTHER
 HV1585'BUNGALOW.  THE MARK IS STAMPED NO.1.  REFERENCE MARK NO.2 IS
 HV1585'23.280 METERS (76.38 FEET) WSW OF THE STATION, 3.15 METERS (10.3
 HV1585'FEET) S OF THE SE CORNER OF THE HOUSE WITH THE SIGN CAROLINE
 HV1585'OVER THE DOOR, AND 0.53 METER (1.7 FEET) ESE OF THE NE CORNER
 HV1585'OF A.L. LOWES HOUSE.  THE MARK IS STAMPED NO.2.
 HV1585'
 HV1585'NO AZIMUTH WAS SET AS THERE WAS NO PLACE TO PUT IT.
 HV1585'
 HV1585'TO REACH THE STATION FROM CHESAPEAKE BEACH GO N ON A HARD
 HV1585'SURFACE ROAD FOR ABOUT 0.7 MILE TO NORTH BEACH, CONTINUE N ON A
 HV1585'ROUGH HARD SURFACE ROAD ABOUT 1.4 MILES TO THE HOME OF A.R. YOUNG
 HV1585'AND THE STATION.
 HV1585
 HV1585                          STATION RECOVERY (1971)
 HV1585
 HV1585'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV1585'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 HV1585'CONDITION.  NO AZ WAS ESTABLISHED FOR THIS STATION.
 HV1585'
 HV1585'TO REACH, GO ABOUT 0.9 MILE SOUTHEAST ALONG STATE HIGHWAY 261
 HV1585'FROM THE JUNCTION OF LAKE SHORE DRIVE AT ROSE HAVEN, THENCE ABOUT
 HV1585'0.05 MILE EAST ALONG LINDEN AVENUE, 155 FEET SOUTH OF THE EXTENDED
 HV1585'CENTER LINE OF THE AVENUE, 102 FEET SOUTHWEST OF THE SOUTHWEST
 HV1585'CORNER OF A WOODEN PIER, 65.3 FEET NORTHEAST OF THE NORTHEAST
 HV1585'CORNER OF THE QUIGLEY COTTAGE, 62.9 FEET NORTHWEST OF THE
 HV1585'NORTHWEST CORNER OF A COTTAGE, 68.9 FEET SOUTHEAST OF THE
 HV1585'SOUTHEAST CORNER OF A COTTAGE, AND SET IN THE TOP OF A
 HV1585'CONCRETE POST FLUSH WITH THE GROUND.
 HV1585'
 HV1585'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV1585'1 MILE SE OF ROSE HAVEN.
 HV1585
 HV1585                          STATION RECOVERY (1972)
 HV1585
 HV1585'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HV1585'1 MI SE FROM ROSE HAVEN.
 HV1585'ABOUT 0.9 MILE SOUTHEAST ALONG STATE HIGHWAY 261 FROM THE JUNCTION
 HV1585'OF LAKE SHORE DRIVE AT ROSE HAVEN, THENCE 0.05 MILE EAST ALONG
 HV1585'LINDEN AVENUE, 155 FEET SOUTH OF THE EXTENDED CENTER LINE OF
 HV1585'LINDEN AVENUE, 102 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A
 HV1585'WOODEN PIER, 62.9 FEET NORTHWEST OF THE NORTHWEST CORNER OF A
 HV1585'WOODEN PIER, 68.9 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A
 HV1585'COTTAGE, 65.3 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE
 HV1585'QUIGLEY COTTAGE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 HV1585'THE GROUND.
 HV1585
 HV1585                          STATION RECOVERY (1973)
 HV1585
 HV1585'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 HV1585'THE STATION AND BOTH REFERENCE MARKS WERE RECOVERED AND FOUND IN
 HV1585'GOOD CONDITION.  A LONGER DISTANCE OF 0.15 FOOT OR 0.045 METERS
 HV1585'WAS NOTED TO REFERENCE MARK ONE.  A LONGER DISTANCE 0.05 FOOT OR
 HV1585'0.015 METERS WAS NOTED TO REFERENCE MARK TWO.  A DIFFERENCE OF
 HV1585'2 MINUTES AND 25 SECONDS IN DIRECTION BETWEEN THE REFERENCE
 HV1585'MARKS WERE NOTED.  THESE DIFFERENCES WAS CHECKED IN THE FIELD
 HV1585'AND THE 1934 OBSERVATIONS WERE USED AS A CHECK.
 HV1585'
 HV1585'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HV1585'
 HV1585'THE STATION IS LOCATED ABOUT 1-1/4 MILE NORTH OF NORTH BEACH,
 HV1585'ABOUT 1/2 MILE SOUTH OF HOLLAND POINT AND ON THE SHORE OF THE
 HV1585'CHESAPEAKE BAY.  THE PROPERTY IS OWNED BY THE TOWN OF NORTH
 HV1585'BEACH.
 HV1585'
 HV1585'TO REACH FROM THE POST OFFICE IN NORTH BEACH, GO NORTH
 HV1585'ON CHESAPEAKE AVENUE FOR 0.3 MILE TO SEVENTH STREET.  TURN RIGHT
 HV1585'AND GO EAST ON SEVENTH STREET FOR 0.05 MILE TO A
 HV1585'T-INTERSECTION.  TURN LEFT AND GO NORTH ON BAY AVENUE FOR 0.9
 HV1585'MILE TO A FORK.  KEEP RIGHT AND CONTINUE NORTH ON WALNUT AVENUE
 HV1585'FOR 0.15 MILE TO LINDEN AVENUE FOR 0.05 MILE TO THE SHORE LINE
 HV1585'AND THE STATION ON THE RIGHT BETWEEN THE THIRD AND FOURTH HOUSE
 HV1585'ON THE RIGHT.
 HV1585'
 HV1585'THE STATION MARK IS A STANDARD DISK STAMPED BAKER 1933, SET IN
 HV1585'THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH
 HV1585'THE SURFACE.  IT IS 65 FEET NORTHEAST OF THE NORTHEAST CORNER OF
 HV1585'THE FOURTH HOUSE FROM THE NORTH, 69 FEET SOUTHEAST OF THE
 HV1585'SOUTHEAST CORNER OF THE THIRD HOUSE AND 50 FEET WEST OF THE
 HV1585'SHORE LINE.
 HV1585'
 HV1585'REFERENCE MARK ONE IS A STANDARD DISK STAMPED NO 1, SET IN THE
 HV1585'TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS 2
 HV1585'INCHES.  IT IS BETWEEN THE SECOND AND THIRD HOUSE, 103 FEET WEST
 HV1585'OF THE SHORE LINE, 9 FEET NORTHEAST OF THE NORTHEAST CORNER OF
 HV1585'THE THIRD HOUSE AND 7 FEET EAST OF THE SOUTHEAST CORNER OF THE
 HV1585'SECOND HOUSE.
 HV1585'
 HV1585'REFERENCE MARK TWO IS A STANDARD DISK STAMPED NO 2, SET IN THE TOP
 HV1585'OF A 10-INCH SQUARE CONCRETE POST WHICH PROJECTS 1-INCH.  IT IS
 HV1585'110 FEET WEST OF THE SHORE LINE, 10 FEET SOUTH-SOUTHEAST OF THE
 HV1585'SOUTHEAST CORNER OF THE FOURTH HOUSE AND 2 FEET EAST OF THE
 HV1585'NORTHEAST CORNER OF THE FIFTH HOUSE.
 HV1585'
 HV1585'TRAVERSE STATION COX MAY BE USED AS AN AZIMUTH MARK FOR THIS
 HV1585'STATION, SEE DESCRIPTION THEREOF.
 HV1585'
 HV1585'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV1585'IN NORTH PART OF NORTH BEACH.
 HV1585
 HV1585                          STATION RECOVERY (1978)
 HV1585
 HV1585'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (RHW)
 HV1585'THE STATION AND REFERENCE MARKS 1 AND 2 WERE RECOVERED AS DESCRIBED
 HV1585'AND IN GOOD CONDITION.  TRAVERSE STATION COX WAS UNABLE TO BE USED
 HV1585'AS AN AZIMUTH MARK FROM THE GROUND DUE TO THE OBSTRUCTION OF A
 HV1585'TREE AND A POWER POLE THAT WAS RECENTLY ERECTED.
 HV1585'
 HV1585'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1 MILE SE OF ROSE
 HV1585'HAVEN.
 HV1585
 HV1585                          STATION RECOVERY (1984)
 HV1585
 HV1585'RECOVERY NOTE BY US POWER SQUADRON 1984 (RLS)
 HV1585'BAKER 1933 RECOVERED GOOD.
 HV1585'
 HV1585'PHOTO E1 - SHOWS CONDITION OF BENCH MARK FLUSH WITH THE GROUND.
 HV1585'
 HV1585'PHOTO E2 - SHOWS POSITION OF BENCH MARK 62.9 FEET NORTHWEST OF
 HV1585'NORTHWEST CORNER OF A WOODEN PIER AS RECORDED.
 HV1585'
 HV1585'RECOVERY 7/22/84.
 HV1585'
 HV1585'BAKER RM 1 FOUND GOOD.
 HV1585'
 HV1585'PHOTO D1 - SHOWS CONDITION OF BENCH MARK 3 INCHES BELOW LEVEL OF THE
 HV1585'GROUND.
 HV1585'
 HV1585'PHOTO D2 - SHOWS POSITION OF BENCH MARK 7.7 FEET EAST OF SOUTHEAST
 HV1585'CORNER OF COTTAGE AS RECORDED.
 HV1585'
 HV1585'RECOVERY DATE 7/22/84.
 HV1585'
 HV1585'THIS MARK RECOVERED THROUGH THE ASSISTANCE OF LOCAL RESIDENT,
 HV1585'MR. TONY PATANE, 18255 SMOKEHOUSE COURT, GERMANTOWN, MD 20874.
 HV1585'PLEASE SEND A LETTER OF APPRECIATION.
 HV1585'
 HV1585'BAKER RM 2 RECOVERED GOOD.
 HV1585'
 HV1585'PHOTO F1 - SHOWS CONDITION OF BENCH MARK FLUSH WITH THE GROUND.
 HV1585'
 HV1585'PHOTO F2 - SHOWS LOCATION OF BENCH MARK 1.7 FEET EAST OF NORTHEAST
 HV1585'CORNER OF A COTTAGE AS RECORDED.
 HV1585'
 HV1585'RECOVERY 7/22/84.
 HV1585
 HV1585                          STATION RECOVERY (1987)
 HV1585
 HV1585'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1987 (JDS)
 HV1585'THE STATION WAS RECOVERED AT THIS DATE.
 HV1585'STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.
 HV1585'
 HV1585'RECOVERED BY J.D. SHEA.
 HV1585
 HV1585                          STATION RECOVERY (2000)
 HV1585
 HV1585'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV1585'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0839 ***********************************************************************
 JV0839  DESIGNATION -  BAKER
 JV0839  PID         -  JV0839
 JV0839  STATE/COUNTY-  MD/HOWARD
 JV0839  COUNTRY     -  US
 JV0839  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0839
 JV0839                         *CURRENT SURVEY CONTROL
 JV0839  ______________________________________________________________________
 JV0839* NAD 83(1991) POSITION- 39 17 51.63651(N) 076 50 13.79614(W)   ADJUSTED
 JV0839* NAVD 88 ORTHO HEIGHT -   145.685 (meters)      477.97  (feet) ADJUSTED
 JV0839  ______________________________________________________________________
 JV0839  GEOID HEIGHT    -        -32.147 (meters)                     GEOID18
 JV0839  LAPLACE CORR    -         -2.93  (seconds)                    DEFLEC18
 JV0839  DYNAMIC HEIGHT  -        145.608 (meters)      477.72  (feet) COMP
 JV0839  MODELED GRAVITY -    980,096.8   (mgal)                       NAVD 88
 JV0839
 JV0839  HORZ ORDER      -  SECOND
 JV0839  VERT ORDER      -  SECOND    CLASS 0
 JV0839
 JV0839.The horizontal coordinates were established by classical geodetic methods
 JV0839.and adjusted by the National Geodetic Survey in January 1992.
 JV0839
 JV0839.The orthometric height was determined by differential leveling and
 JV0839.adjusted by the NATIONAL GEODETIC SURVEY
 JV0839.in June 1991.
 JV0839
 JV0839.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0839.GEOID18 height accuracy estimate available here.
 JV0839
 JV0839.Click photographs - Photos may exist for this station.
 JV0839
 JV0839.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0839
 JV0839.The dynamic height is computed by dividing the NAVD 88
 JV0839.geopotential number by the normal gravity value computed on the
 JV0839.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0839.degrees latitude (g = 980.6199 gals.).
 JV0839
 JV0839.The modeled gravity was interpolated from observed gravity values.
 JV0839
 JV0839. The following values were computed from the NAD 83(1991) position.
 JV0839
 JV0839;                    North         East     Units Scale Factor Converg.
 JV0839;SPC MD       -   181,065.069   414,046.131   MT  0.99997690   +0 06 07.9
 JV0839;SPC MD       -   594,044.31  1,358,416.35   sFT  0.99997690   +0 06 07.9
 JV0839;UTM  18      - 4,351,419.854   341,579.913   MT  0.99990901   -1 09 49.7
 JV0839
 JV0839!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0839!SPC MD       -   0.99998219  x   0.99997690  =   0.99995909
 JV0839!UTM  18      -   0.99998219  x   0.99990901  =   0.99989120
 JV0839
 JV0839:                Primary Azimuth Mark                     Grid Az
 JV0839:SPC MD       -  HOLLOFIELD FIRE LOOKOUT TOWER            094 02 00.2
 JV0839:UTM  18      -  HOLLOFIELD FIRE LOOKOUT TOWER            095 17 57.8
 JV0839
 JV0839_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4157951419(NAD 83)
 JV0839
 JV0839|---------------------------------------------------------------------|
 JV0839| PID    Reference Object                     Distance      Geod. Az  |
 JV0839|                                                           dddmmss.s |
 JV0839| JV6057 HOLLOFIELD FIRE LOOKOUT TOWER       APPROX. 3.5 KM 0940808.1 |
 JV0839| JV0838 BAKER RM 1                            7.416 METERS 17342     |
 JV0839| JV0837 BAKER RM 2                            5.580 METERS 31804     |
 JV0839|---------------------------------------------------------------------|
 JV0839
 JV0839                          SUPERSEDED SURVEY CONTROL
 JV0839
 JV0839  NAD 83(1986)-  39 17 51.63426(N)    076 50 13.80464(W) AD(       ) 2
 JV0839  NAD 27      -  39 17 51.25330(N)    076 50 14.89205(W) AD(       ) 2
 JV0839  NGVD 29             145.90   (m)          478.7    (f) LEVELING    3  
 JV0839  NGVD 29 (11/26/84)  145.901  (m)          478.68   (f) ADJUSTED    2 0
 JV0839
 JV0839.Superseded values are not recommended for survey control.
 JV0839
 JV0839.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0839.See file dsdata.pdf to determine how the superseded data were derived.
 JV0839
 JV0839_MARKER: DS = TRIANGULATION STATION DISK
 JV0839_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0839_STAMPING: BAKER 1958
 JV0839_MARK LOGO: CGS
 JV0839_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0839+STABILITY: SURFACE MOTION
 JV0839
 JV0839  HISTORY     - Date     Condition        Report By
 JV0839  HISTORY     - 1958     MONUMENTED       CGS
 JV0839  HISTORY     - 1958     GOOD             CGS
 JV0839  HISTORY     - 20020907 MARK NOT FOUND   WR
 JV0839
 JV0839                          STATION DESCRIPTION
 JV0839
 JV0839'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0839'THE STATION IS ON THE SOUTH SIDE OF STATE HIGHWAY 99, ABOUT 3.0
 JV0839'MILES NORTHWEST OF ELLICOTT CITY, 2.5 MILES SOUTHWEST OF HOLLOFIELD
 JV0839'AND 1.0 MILE SOUTH OF THE BALTIMORE-HOWARD COUNTY LINE.  IT IS
 JV0839'72 FEET NORTHWEST OF THE NORTHWEST CORNER OF LARGE BRICK HOUSE,
 JV0839'38 FEET SOUTH OF CENTER OF STATE HIGHWAY 99, 29 FEET EAST OF
 JV0839'CENTER OF GRAVEL ROAD AND 18-1/2 FEET SOUTH-SOUTHWEST OF UTILITY
 JV0839'POLE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED BAKER
 JV0839'1958.
 JV0839'
 JV0839'R.M. NO. 1 IS 24 FEET EAST OF CENTER OF GRAVEL ROAD, 19 FEET
 JV0839'SOUTH OF THE CENTER OF STATE HIGHWAY 99 AND 12-1/2 FEET
 JV0839'WEST-NORTHWEST OF UTILITY POLE.  THE MARK IS SET FLUSH AND THE
 JV0839'DISK IS STAMPED BAKER NO 1 1958.
 JV0839'
 JV0839'R.M. NO. 2 IS 65 FEET WEST-NORTHWEST OF THE NORTHWEST CORNER
 JV0839'OF LARGE BRICK HOUSE.  THE MARK IS SET FLUSH AND THE DISK IS
 JV0839'STAMPED BAKER NO 2 1958.
 JV0839'
 JV0839'THE HOLLOFIELD LOOKOUT TOWER WAS USED AS AZIMUTH.
 JV0839'
 JV0839'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND 29,
 JV0839'ABOUT 1 MILE NORTHWEST OF ELLICOTT CITY.  GO WEST ON U.S. HIGHWAY
 JV0839'40 FOR 0.4 MILE TO CROSSROADS AND TRAFFIC LIGHT, TURN RIGHT AND
 JV0839'GO NORTH ON ST. JOHN LANE FOR 1.95 MILES TO A REVERSE Y AND
 JV0839'JUNCTION WITH STATE HIGHWAY 99.  TURN SHARP RIGHT AND EAST ON
 JV0839'STATE HIGHWAY 99 FOR 0.5 MILE TO LARGE BRICK HOUSE AND STATION
 JV0839'ON RIGHT AS DESCRIBED.
 JV0839'
 JV0839'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV0839
 JV0839                          STATION RECOVERY (1958)
 JV0839
 JV0839'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV0839'2.9 MI NW FROM ELLICOTT CITY.
 JV0839'0.4 MILE WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION OF
 JV0839'U.S. HIGHWAY 29 AT ELLICOTT CITY, THENCE 2.0 MILES NORTHWEST
 JV0839'ALONG ST. JOHNS LANE, THENCE 0.5 MILE EAST ALONG STATE HIGHWAY
 JV0839'99, AT THE INTERSECTION OF STATE HIGHWAY 99 AND SULAND LANE, 72.2
 JV0839'FEET NORTHWEST OF THE NORTHWEST CORNER OF THE TWO-STORIED
 JV0839'RESIDENCE OF MR. BAKER, 38 FEET SOUTH OF THE CENTER LINE OF THE
 JV0839'HIGHWAY, 34 1/2 FEET EAST OF THE CENTER LINE OF THE ROAD, 19
 JV0839'FEET SOUTH-SOUTHWEST OF TELEPHONE POLE NO. 145, 2 FEET ABOVE THE
 JV0839'LEVEL OF THE HIGHWAY, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV0839'THE LAWN.
 JV0839
 JV0839                          STATION RECOVERY (2002)
 JV0839
 JV0839'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (JFU)
 JV0839'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4707 ***********************************************************************
 AB4707  DESIGNATION -  BAKER
 AB4707  PID         -  AB4707
 AB4707  STATE/COUNTY-  MD/CARROLL
 AB4707  COUNTRY     -  US
 AB4707  USGS QUAD   -  TANEYTOWN (2016)
 AB4707
 AB4707                         *CURRENT SURVEY CONTROL
 AB4707  ______________________________________________________________________
 AB4707* NAD 83(2011) POSITION- 39 40 38.20680(N) 077 13 20.34407(W)   ADJUSTED
 AB4707* NAD 83(2011) ELLIP HT-   115.735 (meters)        (06/27/12)   ADJUSTED
 AB4707* NAD 83(2011) EPOCH   -  2010.00
 AB4707* NAVD 88 ORTHO HEIGHT -   148.9   (meters)      489.    (feet) GPS OBS
 AB4707  ______________________________________________________________________
 AB4707  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4707  GEOID HEIGHT    -        -33.111 (meters)                     GEOID99
 AB4707  GEOID HEIGHT    -        -33.123 (meters)                     GEOID18
 AB4707  NAD 83(2011) X  -  1,087,210.126 (meters)                     COMP
 AB4707  NAD 83(2011) Y  - -4,794,015.952 (meters)                     COMP
 AB4707  NAD 83(2011) Z  -  4,050,545.738 (meters)                     COMP
 AB4707  LAPLACE CORR    -          3.96  (seconds)                    DEFLEC18
 AB4707
 AB4707  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4707  Standards:
 AB4707         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4707            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4707  -------------------------------------------------------------------
 AB4707  NETWORK    0.80   2.86           0.34   0.31   1.46     -0.22964613
 AB4707  -------------------------------------------------------------------
 AB4707  Click here for local accuracies and other accuracy information.
 AB4707
 AB4707.The horizontal coordinates were established by GPS observations
 AB4707.and adjusted by the National Geodetic Survey in June 2012.
 AB4707
 AB4707.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4707.been affixed to the stable North American tectonic plate. See 
 AB4707.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4707
 AB4707.The horizontal coordinates are valid at the epoch date displayed above
 AB4707.which is a decimal equivalence of Year/Month/Day.
 AB4707
 AB4707.The orthometric height was determined by GPS observations and a
 AB4707.high-resolution geoid model.
 AB4707
 AB4707.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4707.GEOID18 height accuracy estimate available here.
 AB4707
 AB4707.Click photographs - Photos may exist for this station.
 AB4707
 AB4707.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4707
 AB4707.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4707
 AB4707.The ellipsoidal height was determined by GPS observations
 AB4707.and is referenced to NAD 83.
 AB4707
 AB4707. The following values were computed from the NAD 83(2011) position.
 AB4707
 AB4707;                    North         East     Units Scale Factor Converg.
 AB4707;SPC MD       -   223,221.463   380,925.466   MT  1.00004767   -0 08 22.3
 AB4707;SPC MD       -   732,352.42  1,249,752.97   sFT  1.00004767   -0 08 22.3
 AB4707;UTM  18      - 4,394,300.011   309,404.694   MT  1.00004725   -1 25 09.5
 AB4707
 AB4707!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4707!SPC MD       -   0.99998184  x   1.00004767  =   1.00002951
 AB4707!UTM  18      -   0.99998184  x   1.00004725  =   1.00002909
 AB4707
 AB4707_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0940494300(NAD 83)
 AB4707
 AB4707|---------------------------------------------------------------------|
 AB4707| PID    Reference Object                     Distance      Geod. Az  |
 AB4707|                                                           dddmmss.s |
 AB4707| AB4676 PINEY                               232.071 METERS 11724     |
 AB4707|---------------------------------------------------------------------|
 AB4707
 AB4707                          SUPERSEDED SURVEY CONTROL
 AB4707
 AB4707  NAD 83(2007)-  39 40 38.20684(N)    077 13 20.34508(W) AD(2002.00) 0
 AB4707  ELLIP H (02/10/07)  115.744  (m)                       GP(2002.00)    
 AB4707  ELLIP H (08/30/02)  115.754  (m)                       GP(       ) 4 2
 AB4707  NAD 83(1991)-  39 40 38.20674(N)    077 13 20.34474(W) AD(       ) 1
 AB4707  ELLIP H (07/03/96)  115.721  (m)                       GP(       ) 1 1
 AB4707  NAVD 88 (07/03/96)  148.9    (m)  GEOID93  model used  GPS OBS        
 AB4707
 AB4707.Superseded values are not recommended for survey control.
 AB4707
 AB4707.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4707.See file dsdata.pdf to determine how the superseded data were derived.
 AB4707
 AB4707_MARKER: DD = SURVEY DISK
 AB4707_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4707_STAMPING: BAKER 1995
 AB4707_MARK LOGO: MD-013
 AB4707_PROJECTION: FLUSH
 AB4707_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4707+STABILITY: SURFACE MOTION
 AB4707_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4707+SATELLITE: SATELLITE OBSERVATIONS - December 07, 2016
 AB4707
 AB4707  HISTORY     - Date     Condition        Report By
 AB4707  HISTORY     - 1995     MONUMENTED       MD-013
 AB4707  HISTORY     - 20070419 GOOD             GEOCAC
 AB4707  HISTORY     - 20161207 GOOD             BASE9
 AB4707
 AB4707                          STATION DESCRIPTION
 AB4707
 AB4707'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4707'STATION IS LOCATED ABOUT 3.0 MI (4.8 KM) NORTHWEST OF TANEYTOWN. TO
 AB4707'REACH STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE)
 AB4707'AND MD ROUTE 194 (FRANCIS SCOTT KEY HIGHWAY) AT TANEYTOWN, GO
 AB4707'NORTHWEST ON MD ROUTE 140 FOR 2.8 MI (4.5 KM) TO THE STATION ON THE
 AB4707'RIGHT. STATION IS ALSO LOCATED 0.1 MI (0.2 KM) SOUTHEAST ALONG MD
 AB4707'ROUTE 140 FROM ITS INTERSECTION WITH BULL FROG ROAD. STATION MARK IS
 AB4707'SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AB4707'THE GROUND. IT IS 26.0 FT (7.9 M) NORTHEAST OF THE CENTERLINE OF THE
 AB4707'ROAD, 9.0 FT (2.7 M) NORTHWEST OF POWER POLE NO. F57368 AND 65.0 FT
 AB4707'(19.8 M) NORTHWEST OF POWER POLE NO. F53700 WHICH IS ON THE SOUTH SIDE
 AB4707'OF THE ROAD.
 AB4707
 AB4707                          STATION RECOVERY (2007)
 AB4707
 AB4707'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 AB4707'RECOVERED IN GOOD CONDITION.
 AB4707
 AB4707                          STATION RECOVERY (2016)
 AB4707
 AB4707'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 AB4707'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8827 ***********************************************************************
 HV8827  DESIGNATION -  BAKER ECC
 HV8827  PID         -  HV8827
 HV8827  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV8827  COUNTRY     -  US
 HV8827  USGS QUAD   -  NORTH BEACH (2016)
 HV8827
 HV8827                         *CURRENT SURVEY CONTROL
 HV8827  ______________________________________________________________________
 HV8827* NAD 83(1991) POSITION- 38 43 23.00506(N) 076 31 34.81263(W)   ADJUSTED
 HV8827* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV8827  ______________________________________________________________________
 HV8827  GEOID HEIGHT    -        -33.650 (meters)                     GEOID18
 HV8827  LAPLACE CORR    -         -4.52  (seconds)                    DEFLEC18
 HV8827  HORZ ORDER      -  THIRD
 HV8827
 HV8827.The horizontal coordinates were established by classical geodetic methods
 HV8827.and adjusted by the National Geodetic Survey in January 1992.
 HV8827
 HV8827.The orthometric height was scaled from a topographic map.
 HV8827
 HV8827.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8827.GEOID18 height accuracy estimate available here.
 HV8827
 HV8827.Click photographs - Photos may exist for this station.
 HV8827
 HV8827.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8827
 HV8827. The following values were computed from the NAD 83(1991) position.
 HV8827
 HV8827;                    North         East     Units Scale Factor Converg.
 HV8827;SPC MD       -   117,370.344   441,189.102   MT  0.99995338   +0 17 50.2
 HV8827;SPC MD       -   385,072.54  1,447,467.91   sFT  0.99995338   +0 17 50.2
 HV8827;UTM  18      - 4,287,150.366   367,314.691   MT  0.99981680   -0 57 17.8
 HV8827
 HV8827!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8827!SPC MD       -   1.00000489  x   0.99995338  =   0.99995827
 HV8827!UTM  18      -   1.00000489  x   0.99981680  =   0.99982169
 HV8827
 HV8827_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6731487150(NAD 83)
 HV8827
 HV8827                          SUPERSEDED SURVEY CONTROL
 HV8827
 HV8827  NAD 83(1986)-  38 43 23.00313(N)    076 31 34.82599(W) AD(       ) 3
 HV8827
 HV8827.Superseded values are not recommended for survey control.
 HV8827
 HV8827.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8827.See file dsdata.pdf to determine how the superseded data were derived.
 HV8827
 HV8827_MARKER: I = METAL ROD
 HV8827_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8827_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8827_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8827+STABILITY: SURFACE MOTION
 HV8827
 HV8827  HISTORY     - Date     Condition        Report By
 HV8827  HISTORY     - 1987     MONUMENTED       NOS
 HV8827
 HV8827                          STATION DESCRIPTION
 HV8827
 HV8827'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (JDS)
 HV8827'THE STATION IS LOCATED ON THE W SHORE OF CHESAPEAKE BAY, ABOUT
 HV8827'1.25 MI N OF NORTH BEACH AND ABOUT 0.5 MO S OF HOLLAND POINT.
 HV8827'
 HV8827'TO REACH THE STATION FROM THE POST OFFICE IN NORTH BEACH, GO N ON
 HV8827'CHESAPEAKE AVE FOR 0.3 MI TO 7TH STREET.  TURN RIGHT AND GO EAST ON
 HV8827'7TH STREET FOR 0.05 MI TO A T-INTERSECTION.  TURN LEFT AND N ON BAY
 HV8827'AVE FOR 0.9 MI TO A FORK.  KEEP RIGHT AND CONTINUE N ON WALNUT AVE
 HV8827'FOR 0.15 MI TO LINDEN AVE.  THE STATION IS NEAR THE SHORELINE
 HV8827'BETWEEN THE HOUSES AT 904 AND 908 LINDEN AVE.  THE STATION IS
 HV8827'13.225 M E OF TRIANGULATION STATION BAKER 1933, 9.04 M N OF THE NE
 HV8827'EDGE OF A PIER, AND 2.21 M W OF THE W EDGE OF A WOOD BULKHEAD.
 HV8827'
 HV8827'STATION IS A 0.25 IN STEEL ROD PROJECTING 0.25 INCH IN THE NE
 HV8827'CORNER OF A 2 FT SQUARE CONCRETE SLAB.  A TRIANGLE IS CHISELED IN
 HV8827'THE CONCRETE AROUND THE STEEL ROD.
 HV8827'
 HV8827'HEIGHT OF LIGHT SHOWN WAS 1.5 METERS ABOVE THE MARK.
 HV8827'
 HV8827'DESCRIBED BY J.D. SHEA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1584 ***********************************************************************
 HV1584  DESIGNATION -  BAKER RM 1
 HV1584  PID         -  HV1584
 HV1584  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1584  COUNTRY     -  US
 HV1584  USGS QUAD   -  NORTH BEACH (2016)
 HV1584
 HV1584                         *CURRENT SURVEY CONTROL
 HV1584  ______________________________________________________________________
 HV1584* NAD 83(1986) POSITION- 38 43 23.71   (N) 076 31 35.99   (W)   HD_HELD1
 HV1584* NAVD 88 ORTHO HEIGHT -     2.374 (meters)        7.79  (feet) ADJUSTED
 HV1584  ______________________________________________________________________
 HV1584  GEOID HEIGHT    -        -33.649 (meters)                     GEOID18
 HV1584  DYNAMIC HEIGHT  -          2.372 (meters)        7.78  (feet) COMP
 HV1584  MODELED GRAVITY -    980,051.7   (mgal)                       NAVD 88
 HV1584
 HV1584  VERT ORDER      -  SECOND    CLASS I
 HV1584
 HV1584.The horizontal coordinates were determined by differentially corrected
 HV1584.hand held GPS observations or other comparable positioning techniques
 HV1584.and have an estimated accuracy of +/- 3 meters.
 HV1584
 HV1584.The orthometric height was determined by differential leveling and
 HV1584.adjusted by the NATIONAL GEODETIC SURVEY
 HV1584.in December 2004.
 HV1584
 HV1584.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1584.GEOID18 height accuracy estimate available here.
 HV1584
 HV1584.Click photographs - Photos may exist for this station.
 HV1584
 HV1584.The dynamic height is computed by dividing the NAVD 88
 HV1584.geopotential number by the normal gravity value computed on the
 HV1584.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1584.degrees latitude (g = 980.6199 gals.).
 HV1584
 HV1584.The modeled gravity was interpolated from observed gravity values.
 HV1584
 HV1584;                    North         East    Units  Estimated Accuracy
 HV1584;SPC MD       -   117,391.9     441,160.5     MT  (+/- 3 meters HH1 GPS) 
 HV1584
 HV1584_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6728687172(NAD 83)
 HV1584
 HV1584                          SUPERSEDED SURVEY CONTROL
 HV1584
 HV1584  NAVD 88 (06/15/91)    2.370  (m)            7.78   (f) SUPERSEDED  1 2
 HV1584  NGVD 29 (11/26/84)    2.612  (m)            8.57   (f) ADJUSTED    1 2
 HV1584
 HV1584.Superseded values are not recommended for survey control.
 HV1584
 HV1584.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1584.See file dsdata.pdf to determine how the superseded data were derived.
 HV1584
 HV1584_MARKER: DR = REFERENCE MARK DISK
 HV1584_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1584_STAMPING: NO 1
 HV1584_MARK LOGO: CGS
 HV1584_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV1584_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1584+STABILITY: SURFACE MOTION
 HV1584_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1584+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2000
 HV1584
 HV1584  HISTORY     - Date     Condition        Report By
 HV1584  HISTORY     - 1933     MONUMENTED       CGS
 HV1584  HISTORY     - 1972     GOOD             NGS
 HV1584  HISTORY     - 20000630 GOOD             MDSHA
 HV1584
 HV1584                          STATION DESCRIPTION
 HV1584
 HV1584'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1584'1 MI SE FROM ROSE HAVEN.
 HV1584'ABOUT 0.9 MILE SOUTHEAST ALONG STATE HIGHWAY 261 FROM THE JUNCTION
 HV1584'OF LAKE SHORE DRIVE AT ROSE HAVEN, THENCE 0.05 MILE EAST ALONG
 HV1584'LINDEN AVENUE, 98 FEET SOUTH OF THE EXTENDED CENTER LINE OF LINDEN
 HV1584'AVENUE, 77.5 FEET NORTHWEST OF THE STATION MARK DESCRIBED, 97.6
 HV1584'FEET NORTH OF RM 2 DESCRIBED, 90.3 FEET NORTHEAST OF THE NORTHEAST
 HV1584'CORNER OF A COTTAGE, 7.7 FEET EAST OF THE SOUTHEAST CORNER OF
 HV1584'ANOTHER COTTAGE, SET IN THE TOP OF A CONCRETE POST 3 INCHES
 HV1584'BELOW THE LEVEL OF THE GROUND.
 HV1584
 HV1584                          STATION RECOVERY (2000)
 HV1584
 HV1584'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV1584'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0838 ***********************************************************************
 JV0838  DESIGNATION -  BAKER RM 1
 JV0838  PID         -  JV0838
 JV0838  STATE/COUNTY-  MD/HOWARD
 JV0838  COUNTRY     -  US
 JV0838  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0838
 JV0838                         *CURRENT SURVEY CONTROL
 JV0838  ______________________________________________________________________
 JV0838* NAD 83(1986) POSITION- 39 17 51.40   (N) 076 50 13.76   (W)   HD_HELD1
 JV0838* NAVD 88 ORTHO HEIGHT -   145.453 (meters)      477.21  (feet) ADJUSTED
 JV0838  ______________________________________________________________________
 JV0838  GEOID HEIGHT    -        -32.148 (meters)                     GEOID18
 JV0838  DYNAMIC HEIGHT  -        145.376 (meters)      476.95  (feet) COMP
 JV0838  MODELED GRAVITY -    980,096.8   (mgal)                       NAVD 88
 JV0838
 JV0838  VERT ORDER      -  SECOND    CLASS 0
 JV0838
 JV0838.The horizontal coordinates were determined by differentially corrected
 JV0838.hand held GPS observations or other comparable positioning techniques
 JV0838.and have an estimated accuracy of +/- 3 meters.
 JV0838
 JV0838.The orthometric height was determined by differential leveling and
 JV0838.adjusted by the NATIONAL GEODETIC SURVEY
 JV0838.in June 1991.
 JV0838
 JV0838.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0838.GEOID18 height accuracy estimate available here.
 JV0838
 JV0838.Click photographs - Photos may exist for this station.
 JV0838
 JV0838.The dynamic height is computed by dividing the NAVD 88
 JV0838.geopotential number by the normal gravity value computed on the
 JV0838.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0838.degrees latitude (g = 980.6199 gals.).
 JV0838
 JV0838.The modeled gravity was interpolated from observed gravity values.
 JV0838
 JV0838;                    North         East    Units  Estimated Accuracy
 JV0838;SPC MD       -   181,057.8     414,047.0     MT  (+/- 3 meters HH1 GPS) 
 JV0838
 JV0838_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4158051412(NAD 83)
 JV0838
 JV0838                          SUPERSEDED SURVEY CONTROL
 JV0838
 JV0838  NGVD 29 (11/26/84)  145.669  (m)          477.92   (f) ADJUSTED    2 0
 JV0838
 JV0838.Superseded values are not recommended for survey control.
 JV0838
 JV0838.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0838.See file dsdata.pdf to determine how the superseded data were derived.
 JV0838
 JV0838_MARKER: DR = REFERENCE MARK DISK
 JV0838_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0838_STAMPING: BAKER NO 1 1958
 JV0838_MARK LOGO: CGS
 JV0838_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0838+STABILITY: SURFACE MOTION
 JV0838
 JV0838  HISTORY     - Date     Condition        Report By
 JV0838  HISTORY     - 1958     MONUMENTED       CGS
 JV0838
 JV0838                          STATION DESCRIPTION
 JV0838
 JV0838'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0838'2.9 MI NW FROM ELLICOTT CITY.
 JV0838'0.4 MILE WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION OF
 JV0838'U.S. HIGHWAY 29 AT ELLICOTT CITY, THENCE 2.0 MILES NORTHWEST
 JV0838'ALONG ST. JOHNS LANE, THENCE 0.5 MILE EAST ALONG STATE HIGHWAY
 JV0838'99, 24.3 FEET SOUTH OF THE STATION, 62.4 FEET SOUTH OF THE CENTER
 JV0838'LINE OF THE HIGHWAY, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV0838'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1586 ***********************************************************************
 HV1586  DESIGNATION -  BAKER RM 2
 HV1586  PID         -  HV1586
 HV1586  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1586  COUNTRY     -  US
 HV1586  USGS QUAD   -  NORTH BEACH (2016)
 HV1586
 HV1586                         *CURRENT SURVEY CONTROL
 HV1586  ______________________________________________________________________
 HV1586* NAD 83(1986) POSITION- 38 43 22.75   (N) 076 31 36.16   (W)   HD_HELD1
 HV1586* NAVD 88 ORTHO HEIGHT -     2.499 (meters)        8.20  (feet) ADJUSTED
 HV1586  ______________________________________________________________________
 HV1586  GEOID HEIGHT    -        -33.649 (meters)                     GEOID18
 HV1586  DYNAMIC HEIGHT  -          2.498 (meters)        8.20  (feet) COMP
 HV1586  MODELED GRAVITY -    980,051.7   (mgal)                       NAVD 88
 HV1586
 HV1586  VERT ORDER      -  FIRST     CLASS II
 HV1586
 HV1586.The horizontal coordinates were determined by differentially corrected
 HV1586.hand held GPS observations or other comparable positioning techniques
 HV1586.and have an estimated accuracy of +/- 3 meters.
 HV1586
 HV1586.The orthometric height was determined by differential leveling and
 HV1586.adjusted by the NATIONAL GEODETIC SURVEY
 HV1586.in June 1991.
 HV1586
 HV1586.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1586.GEOID18 height accuracy estimate available here.
 HV1586
 HV1586.Click photographs - Photos may exist for this station.
 HV1586
 HV1586.The dynamic height is computed by dividing the NAVD 88
 HV1586.geopotential number by the normal gravity value computed on the
 HV1586.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1586.degrees latitude (g = 980.6199 gals.).
 HV1586
 HV1586.The modeled gravity was interpolated from observed gravity values.
 HV1586
 HV1586;                    North         East    Units  Estimated Accuracy
 HV1586;SPC MD       -   117,362.3     441,156.6     MT  (+/- 3 meters HH1 GPS) 
 HV1586
 HV1586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6728287143(NAD 83)
 HV1586
 HV1586                          SUPERSEDED SURVEY CONTROL
 HV1586
 HV1586  NGVD 29 (11/26/84)    2.741  (m)            8.99   (f) ADJUSTED    1 2
 HV1586
 HV1586.Superseded values are not recommended for survey control.
 HV1586
 HV1586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1586.See file dsdata.pdf to determine how the superseded data were derived.
 HV1586
 HV1586_MARKER: DR = REFERENCE MARK DISK
 HV1586_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1586_STAMPING: NO 2
 HV1586_MARK LOGO: CGS
 HV1586_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV1586_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1586+STABILITY: SURFACE MOTION
 HV1586_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1586+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2000
 HV1586
 HV1586  HISTORY     - Date     Condition        Report By
 HV1586  HISTORY     - 1933     MONUMENTED       CGS
 HV1586  HISTORY     - 1972     GOOD             NGS
 HV1586  HISTORY     - 20000630 GOOD             MDSHA
 HV1586
 HV1586                          STATION DESCRIPTION
 HV1586
 HV1586'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1586'1 MI SE FROM ROSE HAVEN.
 HV1586'ABOUT 0.9 MILE SOUTHEAST ALONG STATE HIGHWAY 261 FROM THE JUNCTION
 HV1586'OF LAKE SHORE DRIVE AT ROSE HAVEN, THENCE 0.05 MILE EAST ALONG
 HV1586'LINDEN AVENUE, 111.3 FEET WEST OF THE CENTER OF THE WEST END OF
 HV1586'A WOODEN PIER, 76.5 FEET SOUTHWEST OF THE STATION MARK DESCRIBED,
 HV1586'97.6 FEET SOUTH OF RM 1 DESCRIBED, 10 FEET SOUTH OF THE SOUTHEAST
 HV1586'CORNER OF A COTTAGE, 1.7 FEET EAST OF THE NORTHEAST CORNER OF A
 HV1586'COTTAGE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 HV1586
 HV1586                          STATION RECOVERY (2000)
 HV1586
 HV1586'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV1586'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0837 ***********************************************************************
 JV0837  DESIGNATION -  BAKER RM 2
 JV0837  PID         -  JV0837
 JV0837  STATE/COUNTY-  MD/HOWARD
 JV0837  COUNTRY     -  US
 JV0837  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0837
 JV0837                         *CURRENT SURVEY CONTROL
 JV0837  ______________________________________________________________________
 JV0837* NAD 83(1986) POSITION- 39 17 51.77   (N) 076 50 13.95   (W)   HD_HELD1
 JV0837* NAVD 88 ORTHO HEIGHT -   145.333 (meters)      476.81  (feet) ADJUSTED
 JV0837  ______________________________________________________________________
 JV0837  GEOID HEIGHT    -        -32.147 (meters)                     GEOID18
 JV0837  DYNAMIC HEIGHT  -        145.257 (meters)      476.56  (feet) COMP
 JV0837  MODELED GRAVITY -    980,096.8   (mgal)                       NAVD 88
 JV0837
 JV0837  VERT ORDER      -  SECOND    CLASS 0
 JV0837
 JV0837.The horizontal coordinates were determined by differentially corrected
 JV0837.hand held GPS observations or other comparable positioning techniques
 JV0837.and have an estimated accuracy of +/- 3 meters.
 JV0837
 JV0837.The orthometric height was determined by differential leveling and
 JV0837.adjusted by the NATIONAL GEODETIC SURVEY
 JV0837.in June 1991.
 JV0837
 JV0837.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0837.GEOID18 height accuracy estimate available here.
 JV0837
 JV0837.Click photographs - Photos may exist for this station.
 JV0837
 JV0837.The dynamic height is computed by dividing the NAVD 88
 JV0837.geopotential number by the normal gravity value computed on the
 JV0837.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0837.degrees latitude (g = 980.6199 gals.).
 JV0837
 JV0837.The modeled gravity was interpolated from observed gravity values.
 JV0837
 JV0837;                    North         East    Units  Estimated Accuracy
 JV0837;SPC MD       -   181,069.2     414,042.4     MT  (+/- 3 meters HH1 GPS) 
 JV0837
 JV0837_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4157651424(NAD 83)
 JV0837
 JV0837                          SUPERSEDED SURVEY CONTROL
 JV0837
 JV0837  NGVD 29 (11/26/84)  145.550  (m)          477.53   (f) ADJUSTED    2 0
 JV0837
 JV0837.Superseded values are not recommended for survey control.
 JV0837
 JV0837.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0837.See file dsdata.pdf to determine how the superseded data were derived.
 JV0837
 JV0837_MARKER: DR = REFERENCE MARK DISK
 JV0837_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0837_STAMPING: BAKER NO 2 1958
 JV0837_MARK LOGO: CGS
 JV0837_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0837+STABILITY: SURFACE MOTION
 JV0837
 JV0837  HISTORY     - Date     Condition        Report By
 JV0837  HISTORY     - 1958     MONUMENTED       CGS
 JV0837
 JV0837                          STATION DESCRIPTION
 JV0837
 JV0837'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0837'2.9 MI NW FROM ELLICOTT CITY.
 JV0837'0.4 MILE WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION OF
 JV0837'U.S. HIGHWAY 29 AT ELLICOTT CITY, THENCE 2.0 MILES NORTHWEST
 JV0837'ALONG ST. JOHNS LANE, THENCE 0.5 MILE EAST ALONG STATE HIGHWAY
 JV0837'99, 19.6 FEET NORTHWEST OF THE STATION, 17 1/2 FEET SOUTH OF THE
 JV0837'CENTER LINE OF THE HIGHWAY, 11 FEET WEST OF TELEPHONE POLE NO.
 JV0837'145, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3141 ***********************************************************************
 DS3141  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3141  DESIGNATION -  BALCER 137
 DS3141  PID         -  DS3141
 DS3141  STATE/COUNTY-  MD/HARFORD
 DS3141  COUNTRY     -  US
 DS3141  USGS QUAD   -  EDGEWOOD (2016)
 DS3141
 DS3141                         *CURRENT SURVEY CONTROL
 DS3141  ______________________________________________________________________
 DS3141* NAD 83(2011) POSITION- 39 26 01.51120(N) 076 21 29.41197(W)   ADJUSTED
 DS3141* NAD 83(2011) ELLIP HT-    11.582 (meters)        (12/12/24)   ADJUSTED
 DS3141* NAD 83(2011) EPOCH   -  2010.00
 DS3141* NAVD 88 ORTHO HEIGHT -    44.57  (meters)      146.2   (feet) GPS OBS
 DS3141  ______________________________________________________________________
 DS3141  GEOID HEIGHT    -        -33.007 (meters)                     GEOID18
 DS3141  NAD 83(2011) X  -  1,163,430.234 (meters)                     COMP
 DS3141  NAD 83(2011) Y  - -4,793,728.518 (meters)                     COMP
 DS3141  NAD 83(2011) Z  -  4,029,632.857 (meters)                     COMP
 DS3141  LAPLACE CORR    -         -3.67  (seconds)                    DEFLEC18
 DS3141
 DS3141  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3141  Standards:
 DS3141         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3141            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3141  -------------------------------------------------------------------
 DS3141  NETWORK    1.16   1.65           0.51   0.43   0.84     -0.05812051
 DS3141  -------------------------------------------------------------------
 DS3141  Click here for local accuracies and other accuracy information.
 DS3141
 DS3141.The horizontal coordinates were established by GPS observations
 DS3141.and adjusted by the MD DEPT OF TRANSP in December 2024.
 DS3141
 DS3141.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3141.been affixed to the stable North American tectonic plate. See 
 DS3141.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3141
 DS3141.The horizontal coordinates are valid at the epoch date displayed above
 DS3141.which is a decimal equivalence of Year/Month/Day.
 DS3141
 DS3141.The orthometric height was determined by GPS observations and a
 DS3141.high-resolution geoid model using precise GPS observation and
 DS3141.processing techniques.
 DS3141
 DS3141.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3141.GEOID18 height accuracy estimate available here.
 DS3141
 DS3141.Click photographs - Photos may exist for this station.
 DS3141
 DS3141.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3141
 DS3141.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3141
 DS3141.The ellipsoidal height was determined by GPS observations
 DS3141.and is referenced to NAD 83.
 DS3141
 DS3141. The following values were computed from the NAD 83(2011) position.
 DS3141
 DS3141;                    North         East     Units Scale Factor Converg.
 DS3141;SPC MD       -   196,354.120   455,257.754   MT  0.99999720   +0 24 10.2
 DS3141;SPC MD       -   644,205.14  1,493,624.81   sFT  0.99999720   +0 24 10.2
 DS3141;UTM  18      - 4,365,792.491   383,112.968   MT  0.99976822   -0 51 46.0
 DS3141
 DS3141!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3141!SPC MD       -   0.99999818  x   0.99999720  =   0.99999538
 DS3141!UTM  18      -   0.99999818  x   0.99976822  =   0.99976640
 DS3141
 DS3141_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8311265792(NAD 83)
 DS3141
 DS3141                          SUPERSEDED SURVEY CONTROL
 DS3141
 DS3141.No superseded survey control is available for this station.
 DS3141
 DS3141_MARKER: DD = SURVEY DISK
 DS3141_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS3141_STAMPING: BALCER 137 1966
 DS3141_MARK LOGO: MD-025
 DS3141_PROJECTION: RECESSED 8 CENTIMETERS
 DS3141_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS3141_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3141+SATELLITE: SATELLITE OBSERVATIONS - December 14, 2023
 DS3141
 DS3141  HISTORY     - Date     Condition        Report By
 DS3141  HISTORY     - 19660101 MONUMENTED       MD-025
 DS3141  HISTORY     - 20231214 GOOD             MDSHA
 DS3141
 DS3141                          STATION DESCRIPTION
 DS3141
 DS3141'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DS3141'THE MARK IS LOCATED ABOUT 7.1 MI (11.4 KM) SOUTH OF BEL AIR, 5.3 MI
 DS3141'(8.5 KM) NORTHEAST OF WHITE MARSH AND 3.6 MI (5.8 KM) WEST-NORTHWEST
 DS3141'OF EDGEWOOD.
 DS3141'
 DS3141'TO REACH THE MARK FROM THE INTERSECTION OF MD 152 (MOUNTAIN ROAD) AND
 DS3141'MD 7 (PHILADELPHIA ROAD)TURN RIGHT ON MD 7 AND PROCEED FOR 1.28 KM
 DS3141'(0.80 MI) TO THE MARK ON THE LEFT.    THE MARK IS 53.1 FT (16.2 M)
 DS3141'WEST-NORTHWEST OF THE NORTHWEST CORNER OF A BUILDING AT 521
 DS3141'PHILADELPHIA ROAD, 51.2 FT (15.6 M) EAST OF A UTILITY POLE NUMBERED
 DS3141'CONCRETE POST MD 50, 43.4 FT (13.2 M) WEST OF A WATER METER, 20.5 FT
 DS3141'(6.2 M) SOUTH OF THE CENTERLINE OF STATE ROUTE MD 7, 6.6 FT (2.0 M)
 DS3141'WEST OF A UTILITY POLE NUMBERED GE 631448 SET IN THE TOP OF A 6-IN (15
 DS3141'CM) ROUND CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6049 ***********************************************************************
 HV6049  DESIGNATION -  BALD
 HV6049  PID         -  HV6049
 HV6049  STATE/COUNTY-  MD/TALBOT
 HV6049  COUNTRY     -  US
 HV6049  USGS QUAD   -  OXFORD (2016)
 HV6049
 HV6049                         *CURRENT SURVEY CONTROL
 HV6049  ______________________________________________________________________
 HV6049* NAD 83(1991) POSITION- 38 44 55.73309(N) 076 14 40.14524(W)   ADJUSTED
 HV6049* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6049  ______________________________________________________________________
 HV6049  GEOID HEIGHT    -        -34.355 (meters)                     GEOID18
 HV6049  LAPLACE CORR    -         -4.99  (seconds)                    DEFLEC18
 HV6049  HORZ ORDER      -  THIRD
 HV6049
 HV6049.The horizontal coordinates were established by classical geodetic methods
 HV6049.and adjusted by the National Geodetic Survey in January 1992.
 HV6049
 HV6049.The orthometric height was scaled from a topographic map.
 HV6049
 HV6049.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6049.GEOID18 height accuracy estimate available here.
 HV6049
 HV6049.Click photographs - Photos may exist for this station.
 HV6049
 HV6049.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6049
 HV6049. The following values were computed from the NAD 83(1991) position.
 HV6049
 HV6049;                    North         East     Units Scale Factor Converg.
 HV6049;SPC MD       -   120,394.501   465,674.454   MT  0.99995229   +0 28 27.1
 HV6049;SPC MD       -   394,994.29  1,527,800.27   sFT  0.99995229   +0 28 27.1
 HV6049;UTM  18      - 4,289,638.056   391,856.044   MT  0.99974401   -0 46 44.4
 HV6049
 HV6049!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6049!SPC MD       -   1.00000543  x   0.99995229  =   0.99995772
 HV6049!UTM  18      -   1.00000543  x   0.99974401  =   0.99974944
 HV6049
 HV6049:                Primary Azimuth Mark                     Grid Az
 HV6049:SPC MD       -  COAL                                     213 32 49.1
 HV6049:UTM  18      -  COAL                                     214 48 00.6
 HV6049
 HV6049_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9185689638(NAD 83)
 HV6049
 HV6049|---------------------------------------------------------------------|
 HV6049| PID    Reference Object                     Distance      Geod. Az  |
 HV6049|                                                           dddmmss.s |
 HV6049| HV5678 ROSE                                APPROX. 0.5 KM 0321529.4 |
 HV6049| HV5999 MULBERRY                             22.481 METERS 05257     |
 HV6049| HV6088 COAL                                APPROX. 1.9 KM 2140116.2 |
 HV6049| CX2053 BALD RM                              16.840 METERS 35533     |
 HV6049|---------------------------------------------------------------------|
 HV6049
 HV6049                          SUPERSEDED SURVEY CONTROL
 HV6049
 HV6049  NAD 83(1986)-  38 44 55.72941(N)    076 14 40.15996(W) AD(       ) 3
 HV6049  NAD 27      -  38 44 55.31000(N)    076 14 41.35700(W) AD(       ) 3
 HV6049  USSD        -  38 44 55.68800(N)    076 14 41.17200(W) AD(       ) 3
 HV6049
 HV6049.Superseded values are not recommended for survey control.
 HV6049
 HV6049.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6049.See file dsdata.pdf to determine how the superseded data were derived.
 HV6049
 HV6049_MARKER: K = CLAY TILE PIPE
 HV6049_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6049_SP_SET: OBJECT DRIVEN INTO GROUND
 HV6049
 HV6049  HISTORY     - Date     Condition        Report By
 HV6049  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6049  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6049
 HV6049                          STATION DESCRIPTION
 HV6049
 HV6049'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6049'ON THE WESTERN SHORE OF BROAD CREEK, ON MULBERRY POINT, AT
 HV6049'NORTHERN SIDE OF ENTRANCE TO LEADENHAM CREEK, ON MARSH POINT,
 HV6049'ABOUT 1 FOOT ABOVE HIGH WATER, 2 YARDS N OF SHORE, 50 YARDS W OF
 HV6049'EXTREME E END OF POINT, AND 40 YARDS SE OF A RAIL FENCE.  STATION
 HV6049'MARK IS CENTER OF 2-INCH TILE PIPE PROJECTING 7 INCHES ABOVE
 HV6049'SURFACE OF GROUND.  SUB-SURFACE MARK IS CENTER OF A 2-INCH DRAIN
 HV6049'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE SURFACE MARK.
 HV6049'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6049'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6049'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV6049'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV6049'IS 16.84 METERS (55.2 FEET) FROM STATION N 4 DEG 26 MIN W.
 HV6049'TRIANGULATION STATION MULBERRY OF 1900 MARKED BY A NAIL IN A
 HV6049'2-INCH CEDAR STUB PROJECTING 2 INCHES ABOVE SURFACE OF GROUND, IS
 HV6049'22.46 METERS (73.7 FEET) FROM STATION 47 DEG 02 MIN E. OTHER
 HV6049'DISTANCES AND BEARINGS ARE AS FOLLOWS--N GABLE OF BRIDGES BARN, 1
 HV6049'MILE, S 41 DEG 55 MIN W.  E GABLE OF HOUSE, 1-1/4 MILES, S 76 DEG
 HV6049'28 MIN W.  E CHIMNEY OF HOUSE, 1/4 MILE, N 75 DEG 46 MIN W.  S
 HV6049'CHIMNEY OF WILLEYS HOUSE, 1-1/8 MILES, N 35 DEG 52 MIN E.  CUPOLA
 HV6049'ON BEVERLEYS HOUSE, 1-1/4 MILES, N 43 DEG 37 MIN E. RIGHT TANGENT
 HV6049'OF N END OF WILLEY ISLAND, 3/4 MILE, S 87 DEG 13 MIN E.
 HV6049
 HV6049                          STATION RECOVERY (1940)
 HV6049
 HV6049'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6049'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  MAY HAVE BEEN WASHED
 HV6049'OUT.  REFERENCE MONUMENT NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1858 ***********************************************************************
 HU1858  DESIGNATION -  BALL
 HU1858  PID         -  HU1858
 HU1858  STATE/COUNTY-  MD/SOMERSET
 HU1858  COUNTRY     -  US
 HU1858  USGS QUAD   -  MONIE (2016)
 HU1858
 HU1858                         *CURRENT SURVEY CONTROL
 HU1858  ______________________________________________________________________
 HU1858* NAD 83(1991) POSITION- 38 14 25.83229(N) 075 50 56.75015(W)   ADJUSTED
 HU1858* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1858  ______________________________________________________________________
 HU1858  GEOID HEIGHT    -        -35.823 (meters)                     GEOID18
 HU1858  LAPLACE CORR    -         -1.93  (seconds)                    DEFLEC18
 HU1858  HORZ ORDER      -  THIRD
 HU1858
 HU1858.The horizontal coordinates were established by classical geodetic methods
 HU1858.and adjusted by the National Geodetic Survey in January 1992.
 HU1858
 HU1858.The orthometric height was scaled from a topographic map.
 HU1858
 HU1858.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1858.GEOID18 height accuracy estimate available here.
 HU1858
 HU1858.Click photographs - Photos may exist for this station.
 HU1858
 HU1858.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1858
 HU1858. The following values were computed from the NAD 83(1991) position.
 HU1858
 HU1858;                    North         East     Units Scale Factor Converg.
 HU1858;SPC MD       -    64,334.347   500,754.014   MT  1.00001088   +0 43 20.4
 HU1858;SPC MD       -   211,070.27  1,642,890.46   sFT  1.00001088   +0 43 20.4
 HU1858;UTM  18      - 4,232,841.342   425,695.014   MT  0.99966800   -0 31 32.1
 HU1858
 HU1858!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1858!SPC MD       -   1.00000566  x   1.00001088  =   1.00001654
 HU1858!UTM  18      -   1.00000566  x   0.99966800  =   0.99967366
 HU1858
 HU1858:                Primary Azimuth Mark                     Grid Az
 HU1858:SPC MD       -  WIND                                     232 09 25.1
 HU1858:UTM  18      -  WIND                                     233 24 17.6
 HU1858
 HU1858_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2569532841(NAD 83)
 HU1858
 HU1858|---------------------------------------------------------------------|
 HU1858| PID    Reference Object                     Distance      Geod. Az  |
 HU1858|                                                           dddmmss.s |
 HU1858| HU1853 WIND                                APPROX. 1.4 KM 2325245.5 |
 HU1858|---------------------------------------------------------------------|
 HU1858
 HU1858                          SUPERSEDED SURVEY CONTROL
 HU1858
 HU1858  NAD 83(1986)-  38 14 25.83092(N)    075 50 56.77231(W) AD(       ) 3
 HU1858  NAD 27      -  38 14 25.38800(N)    075 50 58.01400(W) AD(       ) 3
 HU1858  USSD        -  38 14 25.76900(N)    075 50 57.73600(W) AD(       ) 3
 HU1858
 HU1858.Superseded values are not recommended for survey control.
 HU1858
 HU1858.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1858.See file dsdata.pdf to determine how the superseded data were derived.
 HU1858
 HU1858_MARKER: H = DRILL HOLE
 HU1858_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1858_STAMPING: M.S.F.C. U.S.C.S.
 HU1858_MARK LOGO: MDSFC
 HU1858_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1858+STABILITY: SURFACE MOTION
 HU1858
 HU1858  HISTORY     - Date     Condition        Report By
 HU1858  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1858  HISTORY     - 1932     MARK NOT FOUND   CGS
 HU1858
 HU1858                          STATION DESCRIPTION
 HU1858
 HU1858'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1858'STATION IS ON THE SE SHORE OF WICOMICO RIVER, ABOUT 1 MILE NE OF
 HU1858'WINGATE POINT, ON A SAND AND GRASS POINT MAKING OUT ABOUT 100 YARDS
 HU1858'W OF A SAND BLUFF.  A SMALL CREEK EMPTIES INTO THE RIVER ABOUT
 HU1858'10 YARDS TO THE E, AND THREE POPLARS STAND ABOUT 100 YARDS TO THE
 HU1858'S.  THE EXTREME NORTHERN END OF THE POINT IS ABOUT 35 YARDS FROM
 HU1858'THE STATION, AND WESTERN SIDE IS ABOUT 10 YARDS DISTANT.
 HU1858'STATION MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HU1858'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HU1858'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HU1858'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HU1858'TOP OF POST.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HU1858'REFERENCE ARE AS FOLLOWS--CHIMNEY ON WHITE HOUSE, 1/4 MILE, S 16
 HU1858'DEG 31 MIN E.  THIRD POPLAR, 100 YARDS, S 09 DEG 01 MIN W.  CHIMNEY OF
 HU1858'BROWN HOUSE, 1/2 MILE, S 48 DEG 24 MIN W.  MIDDLE ONE OF FIVE
 HU1858'PINES, 100 YARDS, N 87 DEG 06 MIN E.  CHIMNEY ON JOHN WITHLOCKS
 HU1858'HOUSE, 100 YARDS S 62 DEG 06 MIN E.  LEFT END OF PINE WOODS, 1/2
 HU1858'MILE, S 54 DEG 30 MIN E.  RIGHT END OF PINE WOODS, 1/2 MILE,
 HU1858'S 34 DEG 59 MIN E.
 HU1858
 HU1858                          STATION RECOVERY (1932)
 HU1858
 HU1858'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1858'NO TRACE OF THE CENTER MARK WAS FOUND AFTER THOROUGH SEARCH AND
 HU1858'DIGGING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4945 ***********************************************************************
 JV4945  DESIGNATION -  BALLOON HANGAR 1945
 JV4945  PID         -  JV4945
 JV4945  STATE/COUNTY-  MD/HARFORD
 JV4945  COUNTRY     -  US
 JV4945  USGS QUAD   -  PERRYMAN (2016)
 JV4945
 JV4945                         *CURRENT SURVEY CONTROL
 JV4945  ______________________________________________________________________
 JV4945* NAD 83(1991) POSITION- 39 26 53.40568(N) 076 09 51.24301(W)   ADJUSTED
 JV4945* NAVD 88 ORTHO HEIGHT -    33.9   (meters)      111.    (feet) VERTCON3
 JV4945  ______________________________________________________________________
 JV4945  GEOID HEIGHT    -        -33.241 (meters)                     GEOID18
 JV4945  LAPLACE CORR    -         -2.15  (seconds)                    DEFLEC18
 JV4945  HORZ ORDER      -  SECOND
 JV4945
 JV4945.The horizontal coordinates were established by classical geodetic methods
 JV4945.and adjusted by the National Geodetic Survey in January 1992.
 JV4945
 JV4945.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4945.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4945
 JV4945.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4945.GEOID18 height accuracy estimate available here.
 JV4945
 JV4945.Click photographs - Photos may exist for this station.
 JV4945
 JV4945.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4945
 JV4945. The following values were computed from the NAD 83(1991) position.
 JV4945
 JV4945;                    North         East     Units Scale Factor Converg.
 JV4945;SPC MD       -   198,089.601   471,939.413   MT  0.99999968   +0 31 28.4
 JV4945;SPC MD       -   649,898.97  1,548,354.56   sFT  0.99999968   +0 31 28.4
 JV4945;UTM  18      - 4,367,158.931   399,824.643   MT  0.99972355   -0 44 23.3
 JV4945
 JV4945!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4945!SPC MD       -   0.99999989  x   0.99999968  =   0.99999957
 JV4945!UTM  18      -   0.99999989  x   0.99972355  =   0.99972344
 JV4945
 JV4945:                Primary Azimuth Mark                     Grid Az
 JV4945:SPC MD       -  SWAN MEADOW WATER TANK                   002 58 05.4
 JV4945:UTM  18      -  SWAN MEADOW WATER TANK                   004 13 57.1
 JV4945
 JV4945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9982467158(NAD 83)
 JV4945
 JV4945|---------------------------------------------------------------------|
 JV4945| PID    Reference Object                     Distance      Geod. Az  |
 JV4945|                                                           dddmmss.s |
 JV4945| JV4943 SWAN MEADOW WATER TANK              APPROX. 5.7 KM 0032933.8 |
 JV4945| JV4874 A TOWER                             APPROX. 5.1 KM 0585121.3 |
 JV4945| JV4797 STEPNEY STONEY FOREST FIRE TWR      APPROX. 9.8 KM 3214952.4 |
 JV4945| JV4800 ABERDEEN STANDPIPE                  APPROX. 7.4 KM 3513250.8 |
 JV4945|---------------------------------------------------------------------|
 JV4945
 JV4945                          SUPERSEDED SURVEY CONTROL
 JV4945
 JV4945  NAD 83(1986)-  39 26 53.39906(N)    076 09 51.24828(W) AD(       ) 2
 JV4945  NAD 27      -  39 26 53.00800(N)    076 09 52.42200(W) AD(       ) 2
 JV4945  NGVD 29 (07/19/86)   34.2    (m)          112.     (f) VERT ANG       
 JV4945
 JV4945.Superseded values are not recommended for survey control.
 JV4945
 JV4945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4945.See file dsdata.pdf to determine how the superseded data were derived.
 JV4945
 JV4945_MARKER: B = BOLT
 JV4945_SETTING: 0 = UNSPECIFIED SETTING
 JV4945_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4945
 JV4945  HISTORY     - Date     Condition        Report By
 JV4945  HISTORY     - 1945     MONUMENTED       CGS
 JV4945  HISTORY     - 1984     MARK NOT FOUND   USPSQD
 JV4945
 JV4945                          STATION DESCRIPTION
 JV4945
 JV4945'DESCRIBED BY COAST AND GEODETIC SURVEY 1945 (LGS)
 JV4945'THIS STATION IS ON THE OLD STEEL FRAMED, CONCRETE ROOFED BALLOON
 JV4945'HANGAR AT THE ABERDEEN PROVING GROUNDS ABOUT 3 MILES SW OF THE
 JV4945'ADMINISTRATION BUILDING, AND 4-1/4 MILES SOUTH OF THE TOWN OF
 JV4945'ABERDEEN.  THE MARK ON THE ROOF IS THE CENTER OF THE TOP OF A
 JV4945'STEEL BOLT WHICH BOLTS TOGETHER TWO BOARDS, ONE ON TOP AND ONE
 JV4945'UNDERNEATH THE CINDER CONCRETE ROOF.  THE ROOF IS NOT SOLID
 JV4945'ENOUGH TO PERMIT FIRST-ORDER OBSERVATIONS.
 JV4945'
 JV4945'A STANDARD BRONZE STATION MARKER WAS PLUMBED DIRECTLY UNDER THE
 JV4945'ROOF POINT ONTO THE CONCRETE FLOOR OF THE HANGAR.  IT WAS SET IN
 JV4945'A DRILL HOLE FLUSH WITH THE FLOOR.  MONUMENTS H8 AND H8A AND APG
 JV4945'DISCS SET IN CONCRETE SHAFTS IN THE GROUND ALONG THE ROAD
 JV4945'PARALLELING THE HANGAR ON THE E SIDE.  STATION MARK IS ABOUT 50
 JV4945'YARDS SOUTH OF THE NORTH END OF THE HANGAR AND 10 FEET EAST OF
 JV4945'THE CENTER OF THE BUILDING.
 JV4945
 JV4945                          STATION RECOVERY (1984)
 JV4945
 JV4945'RECOVERY NOTE BY US POWER SQUADRON 1984 (EMT)
 JV4945'THE BUILDING DESCRIBED IN THE TEXT IS NO LONGER IN EXISTENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4331 ***********************************************************************
 DS4331  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4331  DESIGNATION -  BALT-ANNA AZ MK
 DS4331  PID         -  DS4331
 DS4331  STATE/COUNTY-  MD/ANNE ARUNDEL
 DS4331  COUNTRY     -  US
 DS4331  USGS QUAD   -  RELAY (2016)
 DS4331
 DS4331                         *CURRENT SURVEY CONTROL
 DS4331  ______________________________________________________________________
 DS4331* NAD 83(2011) POSITION- 39 13 17.10576(N) 076 38 42.69187(W)   ADJUSTED
 DS4331* NAD 83(2011) ELLIP HT-   -27.796 (meters)        (01/30/26)   ADJUSTED
 DS4331* NAD 83(2011) EPOCH   -  2010.00
 DS4331* NAVD 88 ORTHO HEIGHT -     4.94  (meters)       16.2   (feet) GPS OBS
 DS4331  ______________________________________________________________________
 DS4331  GEOID HEIGHT    -        -32.727 (meters)                     GEOID18
 DS4331  NAD 83(2011) X  -  1,142,845.438 (meters)                     COMP
 DS4331  NAD 83(2011) Y  - -4,814,002.829 (meters)                     COMP
 DS4331  NAD 83(2011) Z  -  4,011,372.784 (meters)                     COMP
 DS4331  LAPLACE CORR    -         -5.54  (seconds)                    DEFLEC18
 DS4331
 DS4331  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4331  Standards:
 DS4331         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4331            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4331  -------------------------------------------------------------------
 DS4331  NETWORK    0.63   1.51           0.28   0.23   0.77     -0.10786346
 DS4331  -------------------------------------------------------------------
 DS4331  Click here for local accuracies and other accuracy information.
 DS4331
 DS4331.The horizontal coordinates were established by GPS observations
 DS4331.and adjusted by the MD DOT HIGHWAY ADMIN in January 2026.
 DS4331
 DS4331.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4331.frame has been affixed to the stable North American tectonic plate 
 DS4331
 DS4331.The horizontal coordinates are valid at the epoch date displayed above
 DS4331.which is a decimal equivalence of Year/Month/Day.
 DS4331
 DS4331.The orthometric height was determined by GPS observations and a
 DS4331.high-resolution geoid model using precise GPS observation and
 DS4331.processing techniques.
 DS4331
 DS4331.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4331.GEOID18 height accuracy estimate available here.
 DS4331
 DS4331.Click photographs - Photos may exist for this station.
 DS4331
 DS4331.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4331
 DS4331.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4331
 DS4331.The ellipsoidal height was determined by GPS observations
 DS4331.and is referenced to NAD 83.
 DS4331
 DS4331. The following values were computed from the NAD 83(2011) position.
 DS4331
 DS4331;                    North         East     Units Scale Factor Converg.
 DS4331;SPC MD       -   172,646.061   430,638.643   MT  0.99996800   +0 13 21.7
 DS4331;SPC MD       -   566,422.95  1,412,853.61   sFT  0.99996800   +0 13 21.7
 DS4331;UTM  18      - 4,342,637.548   357,981.042   MT  0.99984834   -1 02 25.7
 DS4331
 DS4331!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4331!SPC MD       -   1.00000436  x   0.99996800  =   0.99997236
 DS4331!UTM  18      -   1.00000436  x   0.99984834  =   0.99985270
 DS4331
 DS4331_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5798142637(NAD 83)
 DS4331
 DS4331                          SUPERSEDED SURVEY CONTROL
 DS4331
 DS4331.No superseded survey control is available for this station.
 DS4331
 DS4331_MARKER: DD = SURVEY DISK
 DS4331_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS4331_STAMPING: BALT-ANNA AZ 1977
 DS4331_MARK LOGO: MDSHA
 DS4331_PROJECTION: RECESSED 5 CENTIMETERS
 DS4331_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS4331_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4331+SATELLITE: SATELLITE OBSERVATIONS - April 16, 2025
 DS4331
 DS4331  HISTORY     - Date     Condition        Report By
 DS4331  HISTORY     - 19970101 MONUMENTED       MDSHA
 DS4331  HISTORY     - 20250416 GOOD             MDSHA
 DS4331
 DS4331                          STATION DESCRIPTION
 DS4331
 DS4331'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4331'THE MARK IS LOCATED ABOUT 5.1 MI (8.2 KM) SOUTH-SOUTHWEST OF
 DS4331'BALTIMORE, 3.2 MI (5.1 KM) EAST OF RELAY AND 3.1 MI (5.0 KM) WEST OF
 DS4331'CURTIS BAY.
 DS4331'
 DS4331'TO REACH THE MARK FROM THE INTERSECTION OF NORTH CAMP MEADE ROAD AND
 DS4331'BALTIMORE ANNAPOLIS BOULEVARD TURN LEFT ONTO BALTIMORE ANNAPOLIS
 DS4331'BOULEVARD AND PROCEED NORTH FOR 0.78 KM (0.48 MI) TO THE INTERSECTION
 DS4331'WITH NURSERY ROAD.  TURN LEFT ONTO (MD 168)NURSERY ROAD AND PROCEED
 DS4331'FOR 0.25 KM (0.16 MI) TO THE MARK ON THE RIGHT.
 DS4331'
 DS4331'THE MARK IS 70.3 FT (21.4 M) NORTH-NORTHEAST OF A WATER VALVE ON
 DS4331'PATAPSCO ROAD, 49.9 FT (15.2 M) NORTH OF A SEWER MANHOLE ON NURSERY
 DS4331'ROAD, 34.9 FT (10.6 M) NORTH OF THE CENTERLINE OF NURSERY ROAD, 25.0
 DS4331'FT (7.6 M) NORTH-NORTHEAST OF A UTILITY POLE NUMBERED BGE 79697, 12.5
 DS4331'FT (3.8 M) NORTHWEST OF A SEWER MANHOLE SET IN THE TOP OF A 6-IN (15
 DS4331'CM) SQUARE CONCRETE POST AND ABOUT 5 FT (1.5 M) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0557 ***********************************************************************
 JV0557  DESIGNATION -  BALTIMORE
 JV0557  PID         -  JV0557
 JV0557  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0557  COUNTRY     -  US
 JV0557  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0557
 JV0557                         *CURRENT SURVEY CONTROL
 JV0557  ______________________________________________________________________
 JV0557* NAD 83(1986) POSITION- 39 17 48.     (N) 076 37 17.     (W)   SCALED
 JV0557* NAVD 88 ORTHO HEIGHT -    39.469 (meters)      129.49  (feet) ADJUSTED
 JV0557  ______________________________________________________________________
 JV0557  GEOID HEIGHT    -        -32.687 (meters)                     GEOID18
 JV0557  DYNAMIC HEIGHT  -         39.448 (meters)      129.42  (feet) COMP
 JV0557  MODELED GRAVITY -    980,104.5   (mgal)                       NAVD 88
 JV0557
 JV0557  VERT ORDER      -  FIRST     CLASS II
 JV0557
 JV0557.The horizontal coordinates were scaled from a map and have
 JV0557.an estimated accuracy of +/- 6 seconds.
 JV0557
 JV0557.The orthometric height was determined by differential leveling and
 JV0557.adjusted by the NATIONAL GEODETIC SURVEY
 JV0557.in June 1991.
 JV0557
 JV0557.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0557.GEOID18 height accuracy estimate available here.
 JV0557
 JV0557.Click photographs - Photos may exist for this station.
 JV0557
 JV0557.The dynamic height is computed by dividing the NAVD 88
 JV0557.geopotential number by the normal gravity value computed on the
 JV0557.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0557.degrees latitude (g = 980.6199 gals.).
 JV0557
 JV0557.The modeled gravity was interpolated from observed gravity values.
 JV0557
 JV0557;                    North         East    Units  Estimated Accuracy
 JV0557;SPC MD       -   181,010.      432,660.      MT  (+/- 180 meters Scaled)
 JV0557
 JV0557_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ601509(NAD 83)
 JV0557
 JV0557                          SUPERSEDED SURVEY CONTROL
 JV0557
 JV0557  NGVD 29 (11/26/84)   39.705  (m)          130.27   (f) ADJUSTED    1 2
 JV0557
 JV0557.Superseded values are not recommended for survey control.
 JV0557
 JV0557.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0557.See file dsdata.pdf to determine how the superseded data were derived.
 JV0557
 JV0557_MARKER: DB = BENCH MARK DISK
 JV0557_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0557_SP_SET: BUILDING
 JV0557_STAMPING: BALTIMORE 1933
 JV0557_MARK LOGO: CGS
 JV0557_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0557
 JV0557  HISTORY     - Date     Condition        Report By
 JV0557  HISTORY     - 1933     MONUMENTED       CGS
 JV0557  HISTORY     - 1966     GOOD             CGS
 JV0557  HISTORY     - 19950510 MARK NOT FOUND   USPSQD
 JV0557
 JV0557                          STATION DESCRIPTION
 JV0557
 JV0557'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 JV0557'AT BALTIMORE.
 JV0557'AT BALTIMORE, ON NORTH EUTAW STREET, NEAR THE SOUTHWEST CORNER
 JV0557'OF THE INTERSECTION OF DRUID HILL AVENUE, AT THE BRICK BUILDING
 JV0557'OCCUPIED IN 1935 BY THE OFFICE OF THE AFRO-AMERICAN NEWSPAPER,
 JV0557'40 FEET WEST OF THE CENTER LINE OF NORTH EUTAW STREET, IN THE
 JV0557'EAST WALL, 20 FEET SOUTH OF THE MAIN ENTRANCE, AND 5 FEET ABOVE
 JV0557'THE PAVEMENT.  A STANDARD DISK, STAMPED BALTIMORE 1933 AND SET
 JV0557'VERTICALLY.
 JV0557
 JV0557                          STATION RECOVERY (1966)
 JV0557
 JV0557'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV0557'RECOVERED IN GOOD CONDITION.
 JV0557
 JV0557                          STATION RECOVERY (1995)
 JV0557
 JV0557'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0557'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5473 ***********************************************************************
 JV5473  DESIGNATION -  BALTIMORE AND OHIO PIER 32 USE
 JV5473  PID         -  JV5473
 JV5473  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5473  COUNTRY     -  US
 JV5473  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5473
 JV5473                         *CURRENT SURVEY CONTROL
 JV5473  ______________________________________________________________________
 JV5473* NAD 83(1991) POSITION- 39 16 12.39799(N) 076 34 51.49902(W)   ADJUSTED
 JV5473* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5473  ______________________________________________________________________
 JV5473  GEOID HEIGHT    -        -32.840 (meters)                     GEOID18
 JV5473  LAPLACE CORR    -         -4.51  (seconds)                    DEFLEC18
 JV5473  HORZ ORDER      -  THIRD
 JV5473
 JV5473.The horizontal coordinates were established by classical geodetic methods
 JV5473.and adjusted by the National Geodetic Survey in January 1992.
 JV5473
 JV5473.The orthometric height was scaled from a topographic map.
 JV5473
 JV5473.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5473.GEOID18 height accuracy estimate available here.
 JV5473
 JV5473.Click photographs - Photos may exist for this station.
 JV5473
 JV5473.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5473
 JV5473. The following values were computed from the NAD 83(1991) position.
 JV5473
 JV5473;                    North         East     Units Scale Factor Converg.
 JV5473;SPC MD       -   178,075.176   436,159.390   MT  0.99997348   +0 15 46.8
 JV5473;SPC MD       -   584,234.97  1,430,966.27   sFT  0.99997348   +0 15 46.8
 JV5473;UTM  18      - 4,347,942.906   363,619.418   MT  0.99982901   -1 00 03.1
 JV5473
 JV5473!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5473!SPC MD       -   1.00000503  x   0.99997348  =   0.99997851
 JV5473!UTM  18      -   1.00000503  x   0.99982901  =   0.99983404
 JV5473
 JV5473:                Primary Azimuth Mark                     Grid Az
 JV5473:SPC MD       -  BALTIMORE AND OHIO PIER 9 USE            312 13 25.1
 JV5473:UTM  18      -  BALTIMORE AND OHIO PIER 9 USE            313 29 15.0
 JV5473
 JV5473_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6361947942(NAD 83)
 JV5473
 JV5473|---------------------------------------------------------------------|
 JV5473| PID    Reference Object                     Distance      Geod. Az  |
 JV5473|                                                           dddmmss.s |
 JV5473| JV5565 MARYLAND CASUALTY TOWER             APPROX. 3.4 KM 3095130.4 |
 JV5473| JV5492 BALTIMORE AND OHIO PIER 9 USE       APPROX. 0.8 KM 3122911.9 |
 JV5473|---------------------------------------------------------------------|
 JV5473
 JV5473                          SUPERSEDED SURVEY CONTROL
 JV5473
 JV5473  NAD 83(1986)-  39 16 12.39427(N)    076 34 51.50799(W) AD(       ) 3
 JV5473  NAD 27      -  39 16 12.00500(N)    076 34 52.62600(W) AD(       ) 3
 JV5473  USSD        -  39 16 12.37100(N)    076 34 52.46400(W) AD(       ) 3
 JV5473
 JV5473.Superseded values are not recommended for survey control.
 JV5473
 JV5473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5473.See file dsdata.pdf to determine how the superseded data were derived.
 JV5473
 JV5473_MARKER: N = NAIL
 JV5473_SETTING: 0 = UNSPECIFIED SETTING
 JV5473_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5473
 JV5473  HISTORY     - Date     Condition        Report By
 JV5473  HISTORY     - 1915     MONUMENTED       USACE
 JV5473
 JV5473                          STATION DESCRIPTION
 JV5473
 JV5473'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1915
 JV5473'AT THE S SIDE OF THE HARBOR, IN THE WOODEN PLATFORM BELOW THE
 JV5473'STEPS AT THE NE CORNER OF THE PIER.  THE STATION IS MARKED BY A
 JV5473'COPPER NAIL SURROUNDED BY WIRE NAILS.  DISTANCES FROM THE STATION
 JV5473'TO REFERENCE POINTS ARE AS FOLLOWS--NW CORNER OF STEPS (BOTTOM),
 JV5473'1.63 METERS (5.36 FEET).  NE CORNER OF STEPS (BOTTOM), 0.42 METER
 JV5473'(1.37 FEET).  SW CORNER OF STEPS (TOP), 2.06 METERS (6.75
 JV5473'FEET).  THIS STATION REPORTED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5492 ***********************************************************************
 JV5492  DESIGNATION -  BALTIMORE AND OHIO PIER 9 USE
 JV5492  PID         -  JV5492
 JV5492  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5492  COUNTRY     -  US
 JV5492  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5492
 JV5492                         *CURRENT SURVEY CONTROL
 JV5492  ______________________________________________________________________
 JV5492* NAD 83(1991) POSITION- 39 16 29.68075(N) 076 35 15.77764(W)   ADJUSTED
 JV5492* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5492  ______________________________________________________________________
 JV5492  GEOID HEIGHT    -        -32.816 (meters)                     GEOID18
 JV5492  LAPLACE CORR    -         -4.72  (seconds)                    DEFLEC18
 JV5492  HORZ ORDER      -  THIRD
 JV5492
 JV5492.The horizontal coordinates were established by classical geodetic methods
 JV5492.and adjusted by the National Geodetic Survey in January 1992.
 JV5492
 JV5492.The orthometric height was scaled from a topographic map.
 JV5492
 JV5492.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5492.GEOID18 height accuracy estimate available here.
 JV5492
 JV5492.Click photographs - Photos may exist for this station.
 JV5492
 JV5492.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5492
 JV5492. The following values were computed from the NAD 83(1991) position.
 JV5492
 JV5492;                    North         East     Units Scale Factor Converg.
 JV5492;SPC MD       -   178,605.491   435,575.019   MT  0.99997406   +0 15 31.5
 JV5492;SPC MD       -   585,974.85  1,429,049.04   sFT  0.99997406   +0 15 31.5
 JV5492;UTM  18      - 4,348,485.904   363,046.969   MT  0.99983094   -1 00 18.9
 JV5492
 JV5492!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5492!SPC MD       -   1.00000503  x   0.99997406  =   0.99997909
 JV5492!UTM  18      -   1.00000503  x   0.99983094  =   0.99983597
 JV5492
 JV5492:                Primary Azimuth Mark                     Grid Az
 JV5492:SPC MD       -  FELL ROOF USE                            001 39 44.8
 JV5492:UTM  18      -  FELL ROOF USE                            002 55 35.2
 JV5492
 JV5492_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6304648485(NAD 83)
 JV5492
 JV5492|---------------------------------------------------------------------|
 JV5492| PID    Reference Object                     Distance      Geod. Az  |
 JV5492|                                                           dddmmss.s |
 JV5492| JV5551 FELL ROOF USE                       484.444 METERS 0015516.3 |
 JV5492| JV5541 CHESAPEAKE USE 1915                 310.665 METERS 29631     |
 JV5492| JV5565 MARYLAND CASUALTY TOWER             APPROX. 2.6 KM 3090356.1 |
 JV5492|---------------------------------------------------------------------|
 JV5492
 JV5492                          SUPERSEDED SURVEY CONTROL
 JV5492
 JV5492  NAD 83(1986)-  39 16 29.67706(N)    076 35 15.78656(W) AD(       ) 3
 JV5492  NAD 27      -  39 16 29.28700(N)    076 35 16.90000(W) AD(       ) 3
 JV5492  USSD        -  39 16 29.65300(N)    076 35 16.73800(W) AD(       ) 3
 JV5492
 JV5492.Superseded values are not recommended for survey control.
 JV5492
 JV5492.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5492.See file dsdata.pdf to determine how the superseded data were derived.
 JV5492
 JV5492_MARKER: N = NAIL
 JV5492_SETTING: 0 = UNSPECIFIED SETTING
 JV5492_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5492
 JV5492  HISTORY     - Date     Condition        Report By
 JV5492  HISTORY     - 1915     MONUMENTED       USACE
 JV5492  HISTORY     - 20010822 MARK NOT FOUND   USPSQD
 JV5492
 JV5492                          STATION DESCRIPTION
 JV5492
 JV5492'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1915
 JV5492'ON THE S SIDE OF THE HARBOR, IN THE TIMBER WHARF OF PIER 9, SE OF
 JV5492'AN IRON SNUBBING POST WHICH IS NEAR THE NW CORNER OF THE WHARF,
 JV5492'2.53 METERS (8.3 FEET) FROM THE NE CORNER OF THE BASE OF THE
 JV5492'SNUBBING POST 2.42 METERS (7.93 FEET) FROM THE SE CORNER OF THE
 JV5492'SAME, 13.58 METERS (44.55 FEET) FROM THE NW CORNER OF THE
 JV5492'BUILDING, AND 14.91 METERS (49 FEET) FROM THE NORTHERLY SIDE OF
 JV5492'THE BUILDING AT THE TOP OF SOME STEPS.  THE STATION IS MARKED BY
 JV5492'A COPPER NAIL SURROUNDED BY WIRE NAILS.  THIS STATION REPORTED
 JV5492'LOST.
 JV5492
 JV5492                          STATION RECOVERY (2001)
 JV5492
 JV5492'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKL)
 JV5492'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5397 ***********************************************************************
 JV5397  DESIGNATION -  BALTIMORE BASE A
 JV5397  PID         -  JV5397
 JV5397  STATE/COUNTY-  MD/BALTIMORE
 JV5397  COUNTRY     -  US
 JV5397  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5397
 JV5397                         *CURRENT SURVEY CONTROL
 JV5397  ______________________________________________________________________
 JV5397* NAD 83(1991) POSITION- 39 19 28.22743(N) 076 29 45.95220(W)   ADJUSTED
 JV5397* NAVD 88 ORTHO HEIGHT -    15.    (meters)       49.    (feet) SCALED
 JV5397  ______________________________________________________________________
 JV5397  GEOID HEIGHT    -        -32.922 (meters)                     GEOID18
 JV5397  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 JV5397  HORZ ORDER      -  SECOND
 JV5397
 JV5397.The horizontal coordinates were established by classical geodetic methods
 JV5397.and adjusted by the National Geodetic Survey in January 1992.
 JV5397
 JV5397.The orthometric height was scaled from a topographic map.
 JV5397
 JV5397.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5397.GEOID18 height accuracy estimate available here.
 JV5397
 JV5397.Click photographs - Photos may exist for this station.
 JV5397
 JV5397.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5397
 JV5397. The following values were computed from the NAD 83(1991) position.
 JV5397
 JV5397;                    North         East     Units Scale Factor Converg.
 JV5397;SPC MD       -   184,151.193   443,450.071   MT  0.99998046   +0 18 58.6
 JV5397;SPC MD       -   604,169.37  1,454,885.77   sFT  0.99998046   +0 18 58.6
 JV5397;UTM  18      - 4,353,855.647   371,041.187   MT  0.99980476   -0 56 53.6
 JV5397
 JV5397!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5397!SPC MD       -   1.00000285  x   0.99998046  =   0.99998331
 JV5397!UTM  18      -   1.00000285  x   0.99980476  =   0.99980761
 JV5397
 JV5397:                Primary Azimuth Mark                     Grid Az
 JV5397:SPC MD       -  RING                                     046 53 29.8
 JV5397:UTM  18      -  RING                                     048 09 22.0
 JV5397
 JV5397_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7104153855(NAD 83)
 JV5397
 JV5397|---------------------------------------------------------------------|
 JV5397| PID    Reference Object                     Distance      Geod. Az  |
 JV5397|                                                           dddmmss.s |
 JV5397| JV0497 RING                                APPROX. 1.1 KM 0471228.4 |
 JV5397| CA9926 BALTIMORE BASE A RM 1                13.332 METERS 05014     |
 JV5397| CA9927 BALTIMORE BASE A RM 2                15.758 METERS 23043     |
 JV5397|---------------------------------------------------------------------|
 JV5397
 JV5397                          SUPERSEDED SURVEY CONTROL
 JV5397
 JV5397  NAD 83(1986)-  39 19 28.22305(N)    076 29 45.96089(W) AD(       ) 2
 JV5397  NAD 27      -  39 19 27.83500(N)    076 29 47.09700(W) AD(       ) 2
 JV5397
 JV5397.Superseded values are not recommended for survey control.
 JV5397
 JV5397.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5397.See file dsdata.pdf to determine how the superseded data were derived.
 JV5397
 JV5397_MARKER: DS = TRIANGULATION STATION DISK
 JV5397_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5397_STAMPING: BALTIMORE BASE A 1940
 JV5397_MARK LOGO: CGS
 JV5397_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5397+STABILITY: SURFACE MOTION
 JV5397
 JV5397  HISTORY     - Date     Condition        Report By
 JV5397  HISTORY     - 1940     MONUMENTED       CGS
 JV5397  HISTORY     - 1958     GOOD             CGS
 JV5397
 JV5397                          STATION DESCRIPTION
 JV5397
 JV5397'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5397'BALTIMORE BASE A IS A SEMI-TEMPORARY MARK SET AT THE INTERSECTION
 JV5397'OF THE TANGENTS OF THE NW RAIL OF THE SE TRACK OF THE BALTIMORE
 JV5397'AND OHIO RAILROAD.
 JV5397'
 JV5397'STATION MARK IS A STANDARD BRONZE DISK SET IN THE TOP OF A SQUARE
 JV5397'BLOCK OR POST OF CONCRETE.
 JV5397'
 JV5397'TO REACH FROM THE INTERSECTION OF HAMILTON AVENUE AND U.S. HIGHWAY
 JV5397'40, GO NE ON U.S. HIGHWAY 40, 0.7 MILE TO A DIRT ROAD LEADING SE.
 JV5397'TURN RIGHT AND GO 0.1 MILE, OR JUST ACROSS RAILROAD TRACKS.
 JV5397'STATION IS ABOUT 100 YARDS NE OF THIS CROSSING ON THE SW EDGE OF
 JV5397'THE RAILROAD BED.
 JV5397
 JV5397                          STATION RECOVERY (1958)
 JV5397
 JV5397'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5397'THE STATION WAS RECOVERED AS DESCRIBED AND THE MARK WAS FOUND TO
 JV5397'BE IN GOOD CONDITION.
 JV5397'
 JV5397'R.M. NO. 1 AND NO. 2 WERE ESTABLISHED.
 JV5397'
 JV5397'R.M. NO. 1 IS 17-1/2 FEET NORTH-NORTHWEST OF POWER LINE POLE, 22
 JV5397'FEET WEST-SOUTHWEST OF CONCRETE RIGHT-OF-WAY POST AND 12 FEET
 JV5397'SOUTH OF THE SOUTH RAIL OF RAILROAD TRACKS.  THE MARK IS SET FLUSH
 JV5397'AND THE DISK IS STAMPED BALTIMORE BASE A NO 1 1940.
 JV5397'
 JV5397'R.M. NO. 2 IS 13 FEET NORTH OF POWER LINE POLE NO. 85-50 AND 12
 JV5397'FEET SOUTH OF THE SOUTH RAIL OF RAILROAD TRACKS.  THE MARK IS SET
 JV5397'FLUSH AND THE DISK IS STAMPED BALTIMORE BASE A NO 2 1940.
 JV5397'
 JV5397'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV5397'
 JV5397'A NEW TO REACH FOLLOWS.
 JV5397'
 JV5397'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV5397'GOLDEN RING ROAD, (ABOUT 2-1/2 MILES EAST OF THE BALTIMORE CITY
 JV5397'LIMITS), GO SOUTHWEST ON U.S. HIGHWAY 40 FOR 0.7 MILE TO SIDE ROAD
 JV5397'LEFT.  TURN LEFT AND GO SOUTH FOR 0.15 MILE (PASSING TO THE LEFT
 JV5397'OF THE C.N. PITT AND SONS CO.) TO THE B AND O RAILROAD TRACKS,
 JV5397'CROSS TRACKS AND TURN SHARP LEFT AND GO NORTHEAST ALONG SOUTH
 JV5397'SIDE OF TRACK FOR 0.1 MILE TO THE STATION AS DESCRIBED.
 JV5397'
 JV5397'STATIONS ROSE AND RING ARE VISIBLE FROM THE GROUND AND EITHER ONE
 JV5397'COULD BE USED AS AZIMUTH.
 JV5397'
 JV5397'THE DISTANCE TO THE UNOCCUPIED TRAVERSE STATION RING IS 1064.718
 JV5397'METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5503 ***********************************************************************
 JV5503  DESIGNATION -  BALTIMORE BROMO SELTZER CLKTWR
 JV5503  PID         -  JV5503
 JV5503  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5503  COUNTRY     -  US
 JV5503  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5503
 JV5503                         *CURRENT SURVEY CONTROL
 JV5503  ______________________________________________________________________
 JV5503* NAD 83(1991) POSITION- 39 17 15.62154(N) 076 37 14.26342(W)   ADJUSTED
 JV5503  ______________________________________________________________________
 JV5503  GEOID HEIGHT    -        -32.706 (meters)                     GEOID18
 JV5503  LAPLACE CORR    -         -5.62  (seconds)                    DEFLEC18
 JV5503  HORZ ORDER      -  THIRD
 JV5503
 JV5503.The horizontal coordinates were established by classical geodetic methods
 JV5503.and adjusted by the National Geodetic Survey in January 1992.
 JV5503
 JV5503.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5503.GEOID18 height accuracy estimate available here.
 JV5503
 JV5503.Click photographs - Photos may exist for this station.
 JV5503
 JV5503.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5503
 JV5503. The following values were computed from the NAD 83(1991) position.
 JV5503
 JV5503;                    North         East     Units Scale Factor Converg.
 JV5503;SPC MD       -   180,009.903   432,729.187   MT  0.99997563   +0 14 17.2
 JV5503;SPC MD       -   590,582.49  1,419,712.34   sFT  0.99997563   +0 14 17.2
 JV5503;UTM  18      - 4,349,952.559   360,233.208   MT  0.99984053   -1 01 34.9
 JV5503
 JV5503_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6023349952(NAD 83)
 JV5503
 JV5503                          SUPERSEDED SURVEY CONTROL
 JV5503
 JV5503  NAD 83(1986)-  39 17 15.61797(N)    076 37 14.27213(W) AD(       ) 3
 JV5503  NAD 27      -  39 17 15.24800(N)    076 37 15.37300(W) AD(       ) 3
 JV5503
 JV5503.Superseded values are not recommended for survey control.
 JV5503
 JV5503.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5503.See file dsdata.pdf to determine how the superseded data were derived.
 JV5503
 JV5503_MARKER: 55 = TOWER
 JV5503_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5503+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5503
 JV5503  HISTORY     - Date     Condition        Report By
 JV5503  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5503  HISTORY     - 1975     GOOD             NGS
 JV5503  HISTORY     - 1983     GOOD             USPSQD
 JV5503  HISTORY     - 19981011 GOOD             USPSQD
 JV5503  HISTORY     - 20041010 GOOD             GEOCAC
 JV5503  HISTORY     - 20110315 GOOD             GEOCAC
 JV5503
 JV5503                          STATION DESCRIPTION
 JV5503
 JV5503'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5503'STATION IS LOCATED AT THE INTERSECTION OF WEST LOMBARD AND
 JV5503'NORTH EUTAW STREETS IN BALTIMORE.  STATION IS ABOUT 22 STORIES
 JV5503'TALL.  THE POINT INTERSECTED WAS THE TOP OF TOWER ABOVE THE CLOCK.
 JV5503
 JV5503                          STATION RECOVERY (1975)
 JV5503
 JV5503'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5503'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5503
 JV5503                          STATION RECOVERY (1983)
 JV5503
 JV5503'RECOVERY NOTE BY US POWER SQUADRON 1983 (AHH)
 JV5503'BALTIMORE, BROMO SELTZER BUILDING, CLOCK TOWER RECOVERED GOOD.
 JV5503'
 JV5503'STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.  BUILDING IS
 JV5503'NO LONGER USED BY THE BROMO SELTZER COMPANY, IT IS NOW USED BY
 JV5503'ART STUDENTS.
 JV5503
 JV5503                          STATION RECOVERY (1998)
 JV5503
 JV5503'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV5503'RECOVERED IN GOOD CONDITION.
 JV5503
 JV5503                          STATION RECOVERY (2004)
 JV5503
 JV5503'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV5503'RECOVERED IN GOOD CONDITION.
 JV5503
 JV5503                          STATION RECOVERY (2011)
 JV5503
 JV5503'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5503'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5494 ***********************************************************************
 JV5494  DESIGNATION -  BALTIMORE CITY COLLEGE TOWER
 JV5494  PID         -  JV5494
 JV5494  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5494  COUNTRY     -  US
 JV5494  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5494
 JV5494                         *CURRENT SURVEY CONTROL
 JV5494  ______________________________________________________________________
 JV5494* NAD 83(1991) POSITION- 39 19 33.70734(N) 076 35 48.76072(W)   ADJUSTED
 JV5494  ______________________________________________________________________
 JV5494  GEOID HEIGHT    -        -32.703 (meters)                     GEOID18
 JV5494  LAPLACE CORR    -         -5.32  (seconds)                    DEFLEC18
 JV5494  HORZ ORDER      -  THIRD
 JV5494
 JV5494.The horizontal coordinates were established by classical geodetic methods
 JV5494.and adjusted by the National Geodetic Survey in January 1992.
 JV5494
 JV5494.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5494.GEOID18 height accuracy estimate available here.
 JV5494
 JV5494.Click photographs - Photos may exist for this station.
 JV5494
 JV5494.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5494
 JV5494. The following values were computed from the NAD 83(1991) position.
 JV5494
 JV5494;                    North         East     Units Scale Factor Converg.
 JV5494;SPC MD       -   184,277.014   434,759.399   MT  0.99998066   +0 15 10.8
 JV5494;SPC MD       -   604,582.17  1,426,373.13   sFT  0.99998066   +0 15 10.8
 JV5494;UTM  18      - 4,354,173.220   362,356.815   MT  0.99983327   -1 00 43.7
 JV5494
 JV5494_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6235654173(NAD 83)
 JV5494
 JV5494                          SUPERSEDED SURVEY CONTROL
 JV5494
 JV5494  NAD 83(1986)-  39 19 33.70344(N)    076 35 48.76907(W) AD(       ) 3
 JV5494  NAD 27      -  39 19 33.31400(N)    076 35 49.89300(W) AD(       ) 3
 JV5494
 JV5494.Superseded values are not recommended for survey control.
 JV5494
 JV5494.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5494.See file dsdata.pdf to determine how the superseded data were derived.
 JV5494
 JV5494_MARKER: 55 = TOWER
 JV5494
 JV5494  HISTORY     - Date     Condition        Report By
 JV5494  HISTORY     - 1940     FIRST OBSERVED   CGS
 JV5494  HISTORY     - 1983     GOOD             USPSQD
 JV5494  HISTORY     - 20041229 GOOD             GEOCAC
 JV5494
 JV5494                          STATION DESCRIPTION
 JV5494
 JV5494'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5494'STATION IS THE CENTER OF THE TOWER ON THE MAIN BUILDING OF
 JV5494'BALTIMORE CITY COLLEGE.  IT IS LOCATED ON THE CORNER OF THIRTY-THIRD
 JV5494'AND ALAMEDA STREETS IN BALTIMORE.
 JV5494
 JV5494                          STATION RECOVERY (1983)
 JV5494
 JV5494'RECOVERY NOTE BY US POWER SQUADRON 1983 (AHH)
 JV5494'BALTIMORE, CITY COLLEGE (TOWER) RECOVERED GOOD.
 JV5494'
 JV5494'STATION WAS RECOVERED IN GOOD CONDITION.  THE SCHOOL HAS BEEN CLOSED
 JV5494'BY THE CITY OF BALTIMORE.  HOWEVER, THE BUILDING IS STILL IN USE FOR
 JV5494'OTHER PURPOSES AND THE BUILDING IS IN GOOD CONDITION.
 JV5494
 JV5494                          STATION RECOVERY (2004)
 JV5494
 JV5494'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV5494'BUILDING SET WELL BACK FROM AND SOUTHEAST OF THE INTERSECTION OF EAST
 JV5494'33RD STREET AND LOCK RAVEN BOULEVARD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5468 ***********************************************************************
 JV5468  DESIGNATION -  BALTIMORE CITY HOSPITAL TANK
 JV5468  PID         -  JV5468
 JV5468  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5468  COUNTRY     -  US
 JV5468  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5468
 JV5468                         *CURRENT SURVEY CONTROL
 JV5468  ______________________________________________________________________
 JV5468* NAD 83(1991) POSITION- 39 17 32.80804(N) 076 32 57.02900(W)   ADJUSTED
 JV5468  ______________________________________________________________________
 JV5468  GEOID HEIGHT    -        -32.871 (meters)                     GEOID18
 JV5468  LAPLACE CORR    -         -3.94  (seconds)                    DEFLEC18
 JV5468  HORZ ORDER      -  THIRD
 JV5468
 JV5468.The horizontal coordinates were established by classical geodetic methods
 JV5468.and adjusted by the National Geodetic Survey in January 1992.
 JV5468
 JV5468.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5468.GEOID18 height accuracy estimate available here.
 JV5468
 JV5468.Click photographs - Photos may exist for this station.
 JV5468
 JV5468.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5468
 JV5468. The following values were computed from the NAD 83(1991) position.
 JV5468
 JV5468;                    North         East     Units Scale Factor Converg.
 JV5468;SPC MD       -   180,567.932   438,891.017   MT  0.99997623   +0 16 58.6
 JV5468;SPC MD       -   592,413.29  1,439,928.28   sFT  0.99997623   +0 16 58.6
 JV5468;UTM  18      - 4,350,374.431   366,404.949   MT  0.99981975   -0 58 52.3
 JV5468
 JV5468_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6640450374(NAD 83)
 JV5468
 JV5468                          SUPERSEDED SURVEY CONTROL
 JV5468
 JV5468  NAD 83(1986)-  39 17 32.80397(N)    076 32 57.03785(W) AD(       ) 3
 JV5468  NAD 27      -  39 17 32.41500(N)    076 32 58.16600(W) AD(       ) 3
 JV5468
 JV5468.Superseded values are not recommended for survey control.
 JV5468
 JV5468.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5468.See file dsdata.pdf to determine how the superseded data were derived.
 JV5468
 JV5468_MARKER: 51 = TANK
 JV5468
 JV5468  HISTORY     - Date     Condition        Report By
 JV5468  HISTORY     - 1940     FIRST OBSERVED   CGS
 JV5468  HISTORY     - 1952     GOOD             CGS
 JV5468  HISTORY     - 1983     GOOD             USPSQD
 JV5468
 JV5468                          STATION DESCRIPTION
 JV5468
 JV5468'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5468'STATION IS A BLACK WATER TANK LOCATED ON THE CITY HOSPITAL GROUNDS
 JV5468'AT 4940 EASTERN AVENUE.
 JV5468'
 JV5468'THE TANK IS LOCATED BEHIND THE TUBERCULOSIS WARD OR BUILDING,
 JV5468'WHICH IS THE MOST NORTHERLY ONE OF THE GROUP, AND ACROSS THE
 JV5468'STREET (N) OF THE CHRONIC BUILDING.
 JV5468
 JV5468                          STATION RECOVERY (1952)
 JV5468
 JV5468'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (HAP)
 JV5468'STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION
 JV5468'IS ADEQUATE.
 JV5468
 JV5468                          STATION RECOVERY (1983)
 JV5468
 JV5468'RECOVERY NOTE BY US POWER SQUADRON 1983 (AHH)
 JV5468'BALTIMORE, CITY HOSPITAL TANK RECOVERED GOOD.
 JV5468'
 JV5468'STATION WAS VISITED AND TANK RECOVERED IN GOOD CONDITION, EXCEPT THAT
 JV5468'TANK IS NOW PAINTED BLUE WITH WHITE STRIPE AROUND CENTER OF THE
 JV5468'TANK.  TANK IS NO LONGER BLACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ8885 ***********************************************************************
 DJ8885  HT_MOD      -  This is a Height Modernization Survey Station.
 DJ8885  CORS        -  This is a GPS Continuously Operating Reference Station.
 DJ8885  DESIGNATION -  BALTIMORE COUNTY CORS ARP
 DJ8885  CORS_ID     -  BACO
 DJ8885  PID         -  DJ8885
 DJ8885  STATE/COUNTY-  MD/BALTIMORE
 DJ8885  COUNTRY     -  US
 DJ8885  USGS QUAD   -  TOWSON (2016)
 DJ8885
 DJ8885                         *CURRENT SURVEY CONTROL
 DJ8885  ______________________________________________________________________
 DJ8885* NAD 83(2011) POSITION- 39 23 58.03739(N) 076 36 24.44316(W)   ADJUSTED
 DJ8885* NAD 83(2011) ELLIP HT-   128.308 (meters)        (04/??/25)   ADJUSTED
 DJ8885* NAD 83(2011) EPOCH   -  2010.00
 DJ8885* NAVD 88 ORTHO HEIGHT -   160.91  (meters)      527.9   (feet) GPS OBS
 DJ8885  ______________________________________________________________________
 DJ8885  GEOID HEIGHT    -        -32.568 (meters)                     GEOID18
 DJ8885  NAD 83(2011) X  -  1,143,199.186 (meters)                     COMP
 DJ8885  NAD 83(2011) Y  - -4,801,171.612 (meters)                     COMP
 DJ8885  NAD 83(2011) Z  -  4,026,765.139 (meters)                     COMP
 DJ8885
 DJ8885  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ8885  Standards:
 DJ8885         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ8885            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ8885  -------------------------------------------------------------------
 DJ8885  NETWORK    0.17   0.44           0.09   0.03   0.23      0.06488100
 DJ8885  -------------------------------------------------------------------
 DJ8885
 DJ8885.The coordinates were established by GPS observations
 DJ8885.and adjusted by the National Geodetic Survey in April 2025.
 DJ8885
 DJ8885.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ8885.been affixed to the stable North American Tectonic Plate. 
 DJ8885
 DJ8885.The coordinates are valid at the epoch date displayed above
 DJ8885.which is a decimal equivalence of Year/Month/Day.
 DJ8885
 DJ8885.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DJ8885.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DJ8885.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DJ8885.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DJ8885.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DJ8885.published epoch of 2010.00.
 DJ8885
 DJ8885.Additional information on MYCS is available at:
 DJ8885.https://geodesy.noaa.gov/CORS/index.shtml
 DJ8885
 DJ8885.The orthometric height was determined by GPS observations and a
 DJ8885.high-resolution geoid model using precise GPS observation and
 DJ8885.processing techniques.
 DJ8885
 DJ8885.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ8885.GEOID18 height accuracy estimate available here.
 DJ8885
 DJ8885.The PID for the CORS L1 Phase Center is DL6834.
 DJ8885
 DJ8885.Click photographs - Photos may exist for this station.
 DJ8885
 DJ8885.The XYZ, and position/ellipsoidal ht. are equivalent.
 DJ8885
 DJ8885.The ellipsoidal height was determined by GPS observations
 DJ8885.and is referenced to NAD 83.
 DJ8885
 DJ8885. The following values were computed from the NAD 83(2011) position.
 DJ8885
 DJ8885;                    North         East     Units Scale Factor Converg.
 DJ8885;SPC MD       -   192,424.919   433,869.643   MT  0.99999155   +0 14 48.5
 DJ8885;SPC MD       -   631,314.09  1,423,453.99   sFT  0.99999155   +0 14 48.5
 DJ8885;UTM  18      - 4,362,337.557   361,647.403   MT  0.99983568   -1 01 12.1
 DJ8885
 DJ8885!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ8885!SPC MD       -   0.99997987  x   0.99999155  =   0.99997142
 DJ8885!UTM  18      -   0.99997987  x   0.99983568  =   0.99981555
 DJ8885
 DJ8885_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6164762337(NAD 83)
 DJ8885
 DJ8885                          SUPERSEDED SURVEY CONTROL
 DJ8885
 DJ8885  NAD 83(2011)-  39 23 58.03746(N)    076 36 24.44314(W) AD(2010.00) c
 DJ8885  ELLIP H (06/??/19)  128.305  (m)                       GP(2010.00) c c
 DJ8885  NAD 83(2011)-  39 23 58.03752(N)    076 36 24.44317(W) AD(2010.00) c
 DJ8885  NAD 83(2011)-  39 23 58.03748(N)    076 36 24.44306(W) AD(2010.00) c
 DJ8885  ELLIP H (08/??/11)  128.309  (m)                       GP(2010.00) c c
 DJ8885  NAD 83(CORS)-  39 23 58.03744(N)    076 36 24.44324(W) AD(2002.00) c
 DJ8885  ELLIP H (01/??/08)  128.316  (m)                       GP(2002.00) c c
 DJ8885  NAD 83(2007)-  39 23 58.03775(N)    076 36 24.44392(W) AD(2002.00) c
 DJ8885  NAD 83(1991)-  39 23 58.03784(N)    076 36 24.44418(W) AD(       ) c
 DJ8885  NAVD 88 (02/12/02)  160.9    (m)  GEOID99  model used  GPS OBS        
 DJ8885
 DJ8885.Superseded values are not recommended for survey control.
 DJ8885
 DJ8885.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ8885.See file dsdata.pdf to determine how the superseded data were derived.
 DJ8885
 DJ8885_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 DJ8885
 DJ8885                          STATION DESCRIPTION
 DJ8885
 DJ8885'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 DJ8885'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 DJ8885'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 DJ8885'AND LOG FILES ACCESSIBLE AT:
 DJ8885'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5501 ***********************************************************************
 JV5501  DESIGNATION -  BALTIMORE FIRST PRESB CH SPIRE
 JV5501  PID         -  JV5501
 JV5501  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5501  COUNTRY     -  US
 JV5501  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5501
 JV5501                         *CURRENT SURVEY CONTROL
 JV5501  ______________________________________________________________________
 JV5501* NAD 83(1991) POSITION- 39 17 54.97800(N) 076 37 07.43814(W)   ADJUSTED
 JV5501  ______________________________________________________________________
 JV5501  GEOID HEIGHT    -        -32.691 (meters)                     GEOID18
 JV5501  LAPLACE CORR    -         -5.70  (seconds)                    DEFLEC18
 JV5501  HORZ ORDER      -  THIRD
 JV5501
 JV5501.The horizontal coordinates were established by classical geodetic methods
 JV5501.and adjusted by the National Geodetic Survey in January 1992.
 JV5501
 JV5501.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5501.GEOID18 height accuracy estimate available here.
 JV5501
 JV5501.Click photographs - Photos may exist for this station.
 JV5501
 JV5501.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5501
 JV5501. The following values were computed from the NAD 83(1991) position.
 JV5501
 JV5501;                    North         East     Units Scale Factor Converg.
 JV5501;SPC MD       -   181,224.267   432,887.682   MT  0.99997702   +0 14 21.5
 JV5501;SPC MD       -   594,566.62  1,420,232.34   sFT  0.99997702   +0 14 21.5
 JV5501;UTM  18      - 4,351,162.964   360,418.439   MT  0.99983989   -1 01 31.5
 JV5501
 JV5501_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6041851162(NAD 83)
 JV5501
 JV5501                          SUPERSEDED SURVEY CONTROL
 JV5501
 JV5501  NAD 83(1986)-  39 17 54.97437(N)    076 37 07.44667(W) AD(       ) 3
 JV5501  NAD 27      -  39 17 54.58600(N)    076 37 08.55900(W) AD(       ) 3
 JV5501
 JV5501.Superseded values are not recommended for survey control.
 JV5501
 JV5501.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5501.See file dsdata.pdf to determine how the superseded data were derived.
 JV5501
 JV5501_MARKER: 90 = CHURCH SPIRE
 JV5501_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5501+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5501
 JV5501  HISTORY     - Date     Condition        Report By
 JV5501  HISTORY     - 1933     FIRST OBSERVED   CFM
 JV5501  HISTORY     - 1957     GOOD             CGS
 JV5501  HISTORY     - 20041229 GOOD             GEOCAC
 JV5501  HISTORY     - 20110315 GOOD             GEOCAC
 JV5501
 JV5501                          STATION DESCRIPTION
 JV5501
 JV5501'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5501'THE STATION WAS RECOVERED TO BE IN GOOD CONDITION.
 JV5501'
 JV5501'THE STATION IS LOCATED AT THE INTERSECTION OF PARK AVENUE AND
 JV5501'MADISON STREET IN BALTIMORE.  IT IS ABOUT 250 FEET HIGH AND IS
 JV5501'BLACK IN COLOR.  THE POINT INTERSECTED IS THE TOP OF THE SPIRE.
 JV5501
 JV5501                          STATION RECOVERY (2004)
 JV5501
 JV5501'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV5501'RECOVERED IN GOOD CONDITION.
 JV5501
 JV5501                          STATION RECOVERY (2011)
 JV5501
 JV5501'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5501'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5678 ***********************************************************************
 JV5678  DESIGNATION -  BALTIMORE GAS WAGNER STA N STK
 JV5678  PID         -  JV5678
 JV5678  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5678  COUNTRY     -  US
 JV5678  USGS QUAD   -  CURTIS BAY (2016)
 JV5678
 JV5678                         *CURRENT SURVEY CONTROL
 JV5678  ______________________________________________________________________
 JV5678* NAD 83(1991) POSITION- 39 10 42.46205(N) 076 31 38.73322(W)   ADJUSTED
 JV5678  ______________________________________________________________________
 JV5678  GEOID HEIGHT    -        -33.023 (meters)                     GEOID18
 JV5678  LAPLACE CORR    -         -2.70  (seconds)                    DEFLEC18
 JV5678  HORZ ORDER      -  THIRD
 JV5678
 JV5678.The horizontal coordinates were established by classical geodetic methods
 JV5678.and adjusted by the National Geodetic Survey in January 1992.
 JV5678
 JV5678.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5678.GEOID18 height accuracy estimate available here.
 JV5678
 JV5678.Click photographs - Photos may exist for this station.
 JV5678
 JV5678.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5678
 JV5678. The following values were computed from the NAD 83(1991) position.
 JV5678
 JV5678;                    North         East     Units Scale Factor Converg.
 JV5678;SPC MD       -   167,923.363   440,832.698   MT  0.99996376   +0 17 47.8
 JV5678;SPC MD       -   550,928.57  1,446,298.61   sFT  0.99996376   +0 17 47.8
 JV5678;UTM  18      - 4,337,692.074   368,067.216   MT  0.99981432   -0 57 54.3
 JV5678
 JV5678_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6806737692(NAD 83)
 JV5678
 JV5678                          SUPERSEDED SURVEY CONTROL
 JV5678
 JV5678  NAD 83(1986)-  39 10 42.45797(N)    076 31 38.74321(W) AD(       ) 3
 JV5678  NAD 27      -  39 10 42.05500(N)    076 31 39.86100(W) AD(       ) 3
 JV5678
 JV5678.Superseded values are not recommended for survey control.
 JV5678
 JV5678.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5678.See file dsdata.pdf to determine how the superseded data were derived.
 JV5678
 JV5678_MARKER: 63 = STACK
 JV5678_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5678+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2003
 JV5678
 JV5678  HISTORY     - Date     Condition        Report By
 JV5678  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5678  HISTORY     - 1957     GOOD             CGS
 JV5678  HISTORY     - 1975     GOOD             NGS
 JV5678  HISTORY     - 1979     GOOD             LOCENG
 JV5678  HISTORY     - 1985     GOOD             USPSQD
 JV5678  HISTORY     - 20010331 GOOD             NGS
 JV5678  HISTORY     - 20030930 GOOD             USPSQD
 JV5678
 JV5678                          STATION DESCRIPTION
 JV5678
 JV5678'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5678'STATION IS ABOUT 9 MILES SOUTHEAST OF BALTIMORE AND IS ON THE
 JV5678'WEST SHORE OF THE PATAPCO RIVER.  IT IS ON THE WEST SIDE OF THE
 JV5678'MAIN BUILDINGS, PAINTED SILVER AND IS 287 FEET HIGH.  THE POINT
 JV5678'INTERSECTED WAS THE TOP OF STACK.
 JV5678'
 JV5678'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND STATE
 JV5678'HIGHWAY 2, JUST NORTH OF GLEN BURNIE, GO NORTH ON U.S. HIGHWAY
 JV5678'301 AND STATE HIGHWAY 2 FOR 1.1 MILES TO A TRAFFIC LIGHT.  TURN
 JV5678'RIGHT AND GO EAST ON STATE HIGHWAY 710 FOR 1.75 MILES TO A T
 JV5678'INTERSECTION.  TURN RIGHT ACROSS DRAW BRIDGE FOR 1.55 MILES TO
 JV5678'FORKS.  KEEP RIGHT AND CONTINUE SOUTHEAST ON STATE HIGHWAY 173
 JV5678'FOR 2.35 MILES TO SIDE ROAD LEFT AND SIGN HERBERT A WAGNER
 JV5678'STATION, GAS AND ELECTRIC COMPANY.  TURN LEFT AND GO EAST FOR
 JV5678'0.35 MILE TO GATE AND FORK.  KEEP RIGHT AND CONTINUE FOR 0.25
 JV5678'MILE TO GATE, PASS THROUGH GATE AND GO NORTH (LEFT) FOR 0.1
 JV5678'MILE AND STATION.
 JV5678
 JV5678                          STATION RECOVERY (1957)
 JV5678
 JV5678'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5678'STATION WAS RECOVERED AS DESCRIBED WITH THE EXCEPTIONS THAT A
 JV5678'NEW STACK IDENTICAL IN SIZE AND SHAPE HAS BEEN ERECTED JUST SOUTH
 JV5678'OF THIS STATION.  AT THE TIME THE STATION WAS VISITED, THE OLD
 JV5678'STACK WAS PAINTED SILVER AND THE NEW STACK WAS PAINTED ORANGE.
 JV5678'
 JV5678'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV5678
 JV5678                          STATION RECOVERY (1975)
 JV5678
 JV5678'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5678'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5678
 JV5678                          STATION RECOVERY (1979)
 JV5678
 JV5678'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1979 (FFB)
 JV5678'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5678'
 JV5678'DISTANCE AND DIRECTION FROM NEAREST TOWN--9 MI. SOUTHEAST OF
 JV5678'BALTIMORE.
 JV5678
 JV5678                          STATION RECOVERY (1985)
 JV5678
 JV5678'RECOVERY NOTE BY US POWER SQUADRON 1985 (WRB)
 JV5678'STATION RECOVERED AS DESCRIBED, EXCEPT ALL STACKS PAINTED TAN, TWO
 JV5678'MOST SOUTHERN STACKS HAVE RED AND WHITE HORIZ. BANDS AT TOP.
 JV5678
 JV5678                          STATION RECOVERY (2001)
 JV5678
 JV5678'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV5678'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV5678
 JV5678                          STATION RECOVERY (2003)
 JV5678
 JV5678'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5678'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5816 ***********************************************************************
 JV5816  DESIGNATION -  BALTIMORE KAISER ALUM CORP STK
 JV5816  PID         -  JV5816
 JV5816  STATE/COUNTY-  MD/BALTIMORE
 JV5816  COUNTRY     -  US
 JV5816  USGS QUAD   -  RELAY (2016)
 JV5816
 JV5816                         *CURRENT SURVEY CONTROL
 JV5816  ______________________________________________________________________
 JV5816* NAD 83(1991) POSITION- 39 13 48.53701(N) 076 41 08.98237(W)   ADJUSTED
 JV5816  ______________________________________________________________________
 JV5816  GEOID HEIGHT    -        -32.598 (meters)                     GEOID18
 JV5816  LAPLACE CORR    -         -6.16  (seconds)                    DEFLEC18
 JV5816  HORZ ORDER      -  THIRD
 JV5816
 JV5816.The horizontal coordinates were established by classical geodetic methods
 JV5816.and adjusted by the National Geodetic Survey in January 1992.
 JV5816
 JV5816.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5816.GEOID18 height accuracy estimate available here.
 JV5816
 JV5816.Click photographs - Photos may exist for this station.
 JV5816
 JV5816.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5816
 JV5816. The following values were computed from the NAD 83(1991) position.
 JV5816
 JV5816;                    North         East     Units Scale Factor Converg.
 JV5816;SPC MD       -   173,602.470   427,126.269   MT  0.99996893   +0 11 49.9
 JV5816;SPC MD       -   569,560.77  1,401,330.10   sFT  0.99996893   +0 11 49.9
 JV5816;UTM  18      - 4,343,671.047   354,491.006   MT  0.99986070   -1 03 58.9
 JV5816
 JV5816_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5449143671(NAD 83)
 JV5816
 JV5816                          SUPERSEDED SURVEY CONTROL
 JV5816
 JV5816  NAD 83(1986)-  39 13 48.53405(N)    076 41 08.99140(W) AD(       ) 3
 JV5816  NAD 27      -  39 13 48.15000(N)    076 41 10.10000(W) AD(       ) 3
 JV5816
 JV5816.Superseded values are not recommended for survey control.
 JV5816
 JV5816.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5816.See file dsdata.pdf to determine how the superseded data were derived.
 JV5816
 JV5816_MARKER: 63 = STACK
 JV5816_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5816+SATELLITE: SATELLITE OBSERVATIONS - January 26, 2003
 JV5816
 JV5816  HISTORY     - Date     Condition        Report By
 JV5816  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5816  HISTORY     - 1985     GOOD             USPSQD
 JV5816  HISTORY     - 20030126 GOOD             USPSQD
 JV5816  HISTORY     - 20030924 GOOD             USPSQD
 JV5816
 JV5816                          STATION DESCRIPTION
 JV5816
 JV5816'DESCRIBED BY US POWER SQUADRON 1985 (WRB)
 JV5816'KAISER ALUM. CO. STACK FOUND IN GOOD CONDITION, RED BRICK, TO REACH
 JV5816'FROM INTERSTATE 695, GO SOUTH APPROX. 1/2 MILE ON U.S. NO. 1 TO
 JV5816'HALETHORPE FARMS ROAD, TURN LEFT AT LIGHT, BALTIMORE COUNTY FIRE
 JV5816'STATION ON LEFT, PROCEDE APPROX. 1/2 MILE STACK ON LEFT.
 JV5816
 JV5816                          STATION RECOVERY (2003)
 JV5816
 JV5816'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV5816'FOUND IN GOOD CONDITION.  STACK IS NO LONGER OWNED BY KAISER ALUMINUM
 JV5816'CORPORATION, HOWEVER.
 JV5816
 JV5816                          STATION RECOVERY (2003)
 JV5816
 JV5816'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5816'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 0.3 MILE SOUTH OF
 JV5816'WASHINGTON BLVD. ON HALETHORPE FARMS ROAD.  THE STACK IS AT THE SOUTH
 JV5816'END OF AN INDUSTRIAL COMPLEX WITH EMPIRE RESOURCES, INC BEING CLOSEST
 JV5816'TO THE STACK AT 1954 HALETHORPE FARMS ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5502 ***********************************************************************
 JV5502  DESIGNATION -  BALTIMORE LEXINGTON BLDG FLAG
 JV5502  PID         -  JV5502
 JV5502  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5502  COUNTRY     -  US
 JV5502  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5502
 JV5502                         *CURRENT SURVEY CONTROL
 JV5502  ______________________________________________________________________
 JV5502* NAD 83(1991) POSITION- 39 17 29.12510(N) 076 37 01.09608(W)   ADJUSTED
 JV5502* NAVD 88 ORTHO HEIGHT -    17.    (meters)       56.    (feet) SCALED
 JV5502  ______________________________________________________________________
 JV5502  GEOID HEIGHT    -        -32.709 (meters)                     GEOID18
 JV5502  LAPLACE CORR    -         -5.60  (seconds)                    DEFLEC18
 JV5502  HORZ ORDER      -  THIRD
 JV5502
 JV5502.The horizontal coordinates were established by classical geodetic methods
 JV5502.and adjusted by the National Geodetic Survey in January 1992.
 JV5502
 JV5502.The orthometric height was scaled from a topographic map.
 JV5502
 JV5502.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5502.GEOID18 height accuracy estimate available here.
 JV5502
 JV5502.Click photographs - Photos may exist for this station.
 JV5502
 JV5502.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5502
 JV5502. The following values were computed from the NAD 83(1991) position.
 JV5502
 JV5502;                    North         East     Units Scale Factor Converg.
 JV5502;SPC MD       -   180,427.646   433,042.987   MT  0.99997610   +0 14 25.4
 JV5502;SPC MD       -   591,953.04  1,420,741.87   sFT  0.99997610   +0 14 25.4
 JV5502;UTM  18      - 4,350,363.219   360,556.106   MT  0.99983942   -1 01 26.9
 JV5502
 JV5502!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5502!SPC MD       -   1.00000250  x   0.99997610  =   0.99997860
 JV5502!UTM  18      -   1.00000250  x   0.99983942  =   0.99984192
 JV5502
 JV5502_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6055650363(NAD 83)
 JV5502
 JV5502                          SUPERSEDED SURVEY CONTROL
 JV5502
 JV5502  NAD 83(1986)-  39 17 29.12152(N)    076 37 01.10470(W) AD(       ) 3
 JV5502  NAD 27      -  39 17 28.73700(N)    076 37 02.21800(W) AD(       ) 3
 JV5502
 JV5502.Superseded values are not recommended for survey control.
 JV5502
 JV5502.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5502.See file dsdata.pdf to determine how the superseded data were derived.
 JV5502
 JV5502_MARKER: 83 = FLAGSTAFF
 JV5502_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5502+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5502
 JV5502  HISTORY     - Date     Condition        Report By
 JV5502  HISTORY     - 1940     FIRST OBSERVED   CGS
 JV5502  HISTORY     - 20110315 GOOD             GEOCAC
 JV5502
 JV5502                          STATION DESCRIPTION
 JV5502
 JV5502'NO DESCRIPTIVE TEXT AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5208 ***********************************************************************
 JV5208  DESIGNATION -  BALTIMORE LIGHTHOUSE
 JV5208  PID         -  JV5208
 JV5208  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5208  COUNTRY     -  US
 JV5208  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5208
 JV5208                         *CURRENT SURVEY CONTROL
 JV5208  ______________________________________________________________________
 JV5208* NAD 83(1991) POSITION- 39 03 33.07847(N) 076 23 56.39294(W)   ADJUSTED
 JV5208* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5208  ______________________________________________________________________
 JV5208  GEOID HEIGHT    -        -33.350 (meters)                     GEOID18
 JV5208  LAPLACE CORR    -         -2.07  (seconds)                    DEFLEC18
 JV5208  HORZ ORDER      -  THIRD
 JV5208
 JV5208.The horizontal coordinates were established by classical geodetic methods
 JV5208.and adjusted by the National Geodetic Survey in January 1992.
 JV5208
 JV5208.The orthometric height was scaled from a topographic map.
 JV5208
 JV5208.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5208.GEOID18 height accuracy estimate available here.
 JV5208
 JV5208.Click photographs - Photos may exist for this station.
 JV5208
 JV5208.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5208
 JV5208. The following values were computed from the NAD 83(1991) position.
 JV5208
 JV5208;                    North         East     Units Scale Factor Converg.
 JV5208;SPC MD       -   154,747.999   452,016.516   MT  0.99995495   +0 22 38.0
 JV5208;SPC MD       -   507,702.39  1,482,990.85   sFT  0.99995495   +0 22 38.0
 JV5208;UTM  18      - 4,324,276.099   378,956.795   MT  0.99978041   -0 52 53.9
 JV5208
 JV5208!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5208!SPC MD       -   1.00000527  x   0.99995495  =   0.99996022
 JV5208!UTM  18      -   1.00000527  x   0.99978041  =   0.99978568
 JV5208
 JV5208:                Primary Azimuth Mark                     Grid Az
 JV5208:SPC MD       -  LOVE POINT LIGHTHOUSE                    090 53 57.4
 JV5208:UTM  18      -  LOVE POINT LIGHTHOUSE                    092 09 29.3
 JV5208
 JV5208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7895624276(NAD 83)
 JV5208
 JV5208|---------------------------------------------------------------------|
 JV5208| PID    Reference Object                     Distance      Geod. Az  |
 JV5208|                                                           dddmmss.s |
 JV5208| JV5162 LOVE POINT LIGHTHOUSE               APPROX.10.0 KM 0911635.4 |
 JV5208|---------------------------------------------------------------------|
 JV5208
 JV5208                          SUPERSEDED SURVEY CONTROL
 JV5208
 JV5208  NAD 83(1986)-  39 03 33.07383(N)    076 23 56.40546(W) AD(       ) 3
 JV5208  NAD 27      -  39 03 32.67300(N)    076 23 57.55000(W) AD(       ) 3
 JV5208  USSD        -  39 03 33.03100(N)    076 23 57.39000(W) AD(       ) 3
 JV5208
 JV5208.Superseded values are not recommended for survey control.
 JV5208
 JV5208.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5208.See file dsdata.pdf to determine how the superseded data were derived.
 JV5208
 JV5208_MARKER: 13 = LIGHTHOUSE
 JV5208_MARK LOGO: CGS
 JV5208_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5208_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5208+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2005
 JV5208
 JV5208  HISTORY     - Date     Condition        Report By
 JV5208  HISTORY     - 1918     FIRST OBSERVED   CGS
 JV5208  HISTORY     - 1964     GOOD             CGS
 JV5208  HISTORY     - 1984     GOOD             USPSQD
 JV5208  HISTORY     - 1984     GOOD             NOS
 JV5208  HISTORY     - 19910720 GOOD             USPSQD
 JV5208  HISTORY     - 20031002 GOOD             USPSQD
 JV5208  HISTORY     - 20050718 GOOD             USPSQD
 JV5208
 JV5208                          STATION DESCRIPTION
 JV5208
 JV5208'DESCRIBED BY COAST AND GEODETIC SURVEY 1964 (WMR)
 JV5208'STATION RECOVERED IN GOOD CONDITION.
 JV5208
 JV5208                          STATION RECOVERY (1984)
 JV5208
 JV5208'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5208'STATION APPEARS IN GOOD CONDITION, STATION VISITED BY BOAT, NO
 JV5208'LANDING.
 JV5208
 JV5208                          STATION RECOVERY (1984)
 JV5208
 JV5208'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1984 (WVH)
 JV5208'RECOVERED AS DESCRIBED.  THE LIGHT IS COAST GUARD LIGHT LIST
 JV5208'NO. 2765.
 JV5208'
 JV5208'RECOVERED BY J. DANIEL.
 JV5208
 JV5208                          STATION RECOVERY (1991)
 JV5208
 JV5208'RECOVERY NOTE BY US POWER SQUADRON 1991 (DTH)
 JV5208'RECOVERED IN GOOD CONDITION.
 JV5208
 JV5208                          STATION RECOVERY (2003)
 JV5208
 JV5208'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5208'RECOVERED IN GOOD CONDITION.
 JV5208
 JV5208                          STATION RECOVERY (2005)
 JV5208
 JV5208'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV5208'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5506 ***********************************************************************
 JV5506  DESIGNATION -  BALTIMORE LORD BALTIMORE HOTEL
 JV5506  PID         -  JV5506
 JV5506  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5506  COUNTRY     -  US
 JV5506  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5506
 JV5506                         *CURRENT SURVEY CONTROL
 JV5506  ______________________________________________________________________
 JV5506* NAD 83(1991) POSITION- 39 17 23.59138(N) 076 36 58.05723(W)   ADJUSTED
 JV5506  ______________________________________________________________________
 JV5506  GEOID HEIGHT    -        -32.715 (meters)                     GEOID18
 JV5506  LAPLACE CORR    -         -5.57  (seconds)                    DEFLEC18
 JV5506  HORZ ORDER      -  THIRD
 JV5506
 JV5506.The horizontal coordinates were established by classical geodetic methods
 JV5506.and adjusted by the National Geodetic Survey in January 1992.
 JV5506
 JV5506.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5506.GEOID18 height accuracy estimate available here.
 JV5506
 JV5506.Click photographs - Photos may exist for this station.
 JV5506
 JV5506.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5506
 JV5506. The following values were computed from the NAD 83(1991) position.
 JV5506
 JV5506;                    North         East     Units Scale Factor Converg.
 JV5506;SPC MD       -   180,257.302   433,116.525   MT  0.99997591   +0 14 27.4
 JV5506;SPC MD       -   591,394.16  1,420,983.13   sFT  0.99997591   +0 14 27.4
 JV5506;UTM  18      - 4,350,191.317   360,625.857   MT  0.99983918   -1 01 24.8
 JV5506
 JV5506_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6062550191(NAD 83)
 JV5506
 JV5506                          SUPERSEDED SURVEY CONTROL
 JV5506
 JV5506  NAD 83(1986)-  39 17 23.58769(N)    076 36 58.06592(W) AD(       ) 3
 JV5506  NAD 27      -  39 17 23.19700(N)    076 36 59.19600(W) AD(       ) 3
 JV5506
 JV5506.Superseded values are not recommended for survey control.
 JV5506
 JV5506.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5506.See file dsdata.pdf to determine how the superseded data were derived.
 JV5506
 JV5506_MARKER: 82 = FINIAL
 JV5506_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5506+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5506
 JV5506  HISTORY     - Date     Condition        Report By
 JV5506  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5506  HISTORY     - 19981011 GOOD             USPSQD
 JV5506  HISTORY     - 20110315 GOOD             GEOCAC
 JV5506
 JV5506                          STATION DESCRIPTION
 JV5506
 JV5506'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5506'STATION IS LOCATED AT THE INTERSECTION OF WEST BALTIMORE AND
 JV5506'SOUTH HANOVER STREETS IN BALTIMORE.  STATION IS ABOUT 20 STORIES
 JV5506'TALL.  THE POINT INTERSECTED WAS A GREEN COLORED DECORATION
 JV5506'WHICH IS THE HIGHEST POINT OF THE BUILDING.
 JV5506
 JV5506                          STATION RECOVERY (1998)
 JV5506
 JV5506'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV5506'RECOVERED IN GOOD CONDITION.
 JV5506
 JV5506                          STATION RECOVERY (2011)
 JV5506
 JV5506'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5506'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5374 ***********************************************************************
 JV5374  DESIGNATION -  BALTIMORE NE BASE
 JV5374  PID         -  JV5374
 JV5374  STATE/COUNTY-  MD/BALTIMORE
 JV5374  COUNTRY     -  US
 JV5374  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5374
 JV5374                         *CURRENT SURVEY CONTROL
 JV5374  ______________________________________________________________________
 JV5374* NAD 83(1991) POSITION- 39 20 21.50752(N) 076 28 33.13811(W)   ADJUSTED
 JV5374* NAVD 88 ORTHO HEIGHT -    21.    (meters)       69.    (feet) SCALED
 JV5374  ______________________________________________________________________
 JV5374  GEOID HEIGHT    -        -32.937 (meters)                     GEOID18
 JV5374  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 JV5374  HORZ ORDER      -  FIRST
 JV5374
 JV5374.The horizontal coordinates were established by classical geodetic methods
 JV5374.and adjusted by the National Geodetic Survey in January 1992.
 JV5374
 JV5374.The orthometric height was scaled from a topographic map.
 JV5374
 JV5374.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5374.GEOID18 height accuracy estimate available here.
 JV5374
 JV5374.Click photographs - Photos may exist for this station.
 JV5374
 JV5374.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5374
 JV5374. The following values were computed from the NAD 83(1991) position.
 JV5374
 JV5374;                    North         East     Units Scale Factor Converg.
 JV5374;SPC MD       -   185,804.082   445,184.661   MT  0.99998251   +0 19 44.3
 JV5374;SPC MD       -   609,592.23  1,460,576.68   sFT  0.99998251   +0 19 44.3
 JV5374;UTM  18      - 4,355,469.562   372,811.516   MT  0.99979918   -0 56 08.5
 JV5374
 JV5374!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5374!SPC MD       -   1.00000191  x   0.99998251  =   0.99998442
 JV5374!UTM  18      -   1.00000191  x   0.99979918  =   0.99980109
 JV5374
 JV5374:                Primary Azimuth Mark                     Grid Az
 JV5374:SPC MD       -  W 14                                     222 51 01.4
 JV5374:UTM  18      -  W 14                                     224 06 54.2
 JV5374
 JV5374_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7281155469(NAD 83)
 JV5374
 JV5374|---------------------------------------------------------------------|
 JV5374| PID    Reference Object                     Distance      Geod. Az  |
 JV5374|                                                           dddmmss.s |
 JV5374| CA9928 BALTIMORE NE BASE RM 1               26.956 METERS 08051     |
 JV5374| CA9930 BALTIMORE NE BASE RM 3               19.508 METERS 18246     |
 JV5374| CA9929 BALTIMORE NE BASE RM 2               27.380 METERS 18821     |
 JV5374| JV5378 BACK R BALT CITY SEWER PLT STK      APPROX. 5.7 KM 1943314.5 |
 JV5374| JV5482 BACK R CONSOL PWR CO GAS TANK       APPROX. 5.8 KM 2071712.0 |
 JV5374| JV5408 STEMMERS RUN ZION EVAN LUTH CH      APPROX. 1.1 KM 2073341.7 |
 JV5374| CB1937 W 14                                               2231045.7 |
 JV5374|---------------------------------------------------------------------|
 JV5374
 JV5374                          SUPERSEDED SURVEY CONTROL
 JV5374
 JV5374  NAD 83(1986)-  39 20 21.50294(N)    076 28 33.14679(W) AD(       ) 1
 JV5374  NAD 27      -  39 20 21.11500(N)    076 28 34.28400(W) AD(       ) 1
 JV5374
 JV5374.Superseded values are not recommended for survey control.
 JV5374
 JV5374.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5374.See file dsdata.pdf to determine how the superseded data were derived.
 JV5374
 JV5374_MARKER: DS = TRIANGULATION STATION DISK
 JV5374_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5374_STAMPING: BALTIMORE NE BASE 1940
 JV5374_MARK LOGO: CGS
 JV5374_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5374+STABILITY: SURFACE MOTION
 JV5374
 JV5374  HISTORY     - Date     Condition        Report By
 JV5374  HISTORY     - 1940     MONUMENTED       CGS
 JV5374  HISTORY     - 1954     GOOD             CGS
 JV5374  HISTORY     - 1958     GOOD             CGS
 JV5374
 JV5374                          STATION DESCRIPTION
 JV5374
 JV5374'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5374'STATION IS ABOUT 8 MILES E OF THE CENTER OF BALTIMORE ON THE S
 JV5374'SIDE OF U.S. HIGHWAY 40, 1 MILE E OF THE INTERSECTION OF GOLDEN
 JV5374'RING ROAD AND U.S. HIGHWAY 40, AND IT IS ABOUT 45 FEET SE OFF THE
 JV5374'HIGHWAY, 150 FEET W OF THE W ABUTMENT OF THE OVERPASS AND ABOUT 80
 JV5374'FEET NW OF THE RAILROAD TRACKS.
 JV5374'
 JV5374'SURFACE, UNDERGROUND AND REFERENCE MARK NO.1 ARE STANDARD BRONZE
 JV5374'DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 JV5374'
 JV5374'REFERENCE MARK NO.1 IS N OF THE STATION ABOUT MIDWAY BETWEEN THE
 JV5374'HIGHWAY AND THE RAILROAD TRACKS AND AT THE BASE OF A TELEPHONE POLE.
 JV5374'
 JV5374'REFERENCE MARK NO.2 IS A STANDARD BRONZE DISK SET IN A CONCRETE
 JV5374'POST THAT PROJECTS ABOUT 4 INCHES ABOVE THE SURFACE OF THE GROUND
 JV5374'AND IS AT THE BASE OF A TELEPHONE POLE.  IT IS SE OF THE STATION.
 JV5374'
 JV5374'THE AZIMUTH MARK IS LOCATED ABOUT 0.5 MILE SSE OF THE STATION IN
 JV5374'THE CONCRETE ABUTMENT OF A BRIDGE OVER THE BALTIMORE AND OHIO
 JV5374'RAILROAD.  THE MARK IS IN THE N END OF THE ABUTMENT ON THE E SIDE
 JV5374'OF THE TRACK, AND IS A STANDARD U.S. GEOLOGICAL SURVEY BENCH MARK.
 JV5374'
 JV5374'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5374
 JV5374                          STATION RECOVERY (1954)
 JV5374
 JV5374'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 JV5374'THE STATION AND REFERENCE MARK 1 WERE RECOVERED IN GOOD CONDITION.
 JV5374'REFERENCE MARK 2 IS NOW ON THE EDGE OF THE RAILROAD CUT.  THE
 JV5374'MONUMENT IS LEANING SLIGHTLY AND WILL PROBABLY WASH OUT IN THE
 JV5374'NEAR FUTURE.  THE ORIGINAL DESCRIPTION IS ADEQUATE WITH THESE
 JV5374'EXCEPTIONS--
 JV5374'
 JV5374'1 MI. E OF THE INTERSECTION OF GOLDEN RING ROAD AND U.S. HIGHWAY
 JV5374'40 SHOULD BE CHANGED TO 0.9 MI. NE ALONG U.S. HIGHWAY 40 FROM THE
 JV5374'INTERSECTION OF GOLDEN RING ROAD AND U.S. HIGHWAY 40.
 JV5374'
 JV5374'THE TELEPHONE POLES, MENTIONED IN THE ORIGINAL DESCRIPTION, HAVE
 JV5374'BEEN REMOVED, AND REFERENCE MARKS 1 AND 2 ARE NOW ABOUT MIDWAY
 JV5374'BETWEEN THE POLES OF THE POLE LINE.
 JV5374
 JV5374                          STATION RECOVERY (1958)
 JV5374
 JV5374'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5374'STATION, REFERENCE MARK NO. 1 AND W 14 (USGS) 1926 (AZIMUTH MARK)
 JV5374'RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK NO. 2 WAS
 JV5374'FOUND DESTROYED BY WASHING OF CUT EMBANKMENT.  THEREFORE REFERENCE
 JV5374'MARK NO. 3 WAS ESTABLISHED.
 JV5374'
 JV5374'DUE TO MINOR CHANGES IN LANDMARKS A NEW DESCRIPTION FOLLOWS--
 JV5374'
 JV5374'STATION IS LOCATED ALONG THE SOUTHEAST SIDE OF OVERPASS OF U.S.
 JV5374'HIGHWAY NO. 40 AND BALTIMORE AND OHIO RAILROAD, ABOUT 8.0 MILES
 JV5374'EAST OF THE CENTER OF BALTIMORE AND ABOUT 1.0 MILE EAST OF THE
 JV5374'INTERSECTION OF GOLDEN RING ROAD AND U.S. HIGHWAY NO. 40.
 JV5374'STATION IS 26 FEET NORTH-NORTHEAST OF A TREE WITH TRIANGLE BLAZE,
 JV5374'34 FEET SOUTH OF GUARDRAIL CABLE, 64 FEET WEST OF POWERLINE POLE
 JV5374'AND 80 FEET NORTHWEST OF RAILROAD TRACKS.  THE MARK IS A STANDARD
 JV5374'DISK SET IN A 12X12 INCH CONCRETE MONUMENT, PROJECTS 2 INCHES AND
 JV5374'THE DISK IS STAMPED BALTIMORE NE BASE 1940.
 JV5374'
 JV5374'REFERENCE MARK NO. 1 IS 1 FOOT NORTH-NORTHWEST OF NORTHWEST EDGE
 JV5374'OF CUT EMBANKMENT AND 26-1/2 FEET SOUTHEAST OF POWERLINE POLE.
 JV5374'THE MARK IS A STANDARD REFERENCE DISK SET IN A 12X12 INCH CONCRETE
 JV5374'MONUMENT, FLUSH WITH THE GROUND AND THE DISK IS STAMPED BALTIMORE
 JV5374'NE BASE NO 1 1940.
 JV5374'
 JV5374'REFERENCE MARK NO. 3 IS 39 FEET SOUTH OF TREE WITH TRIANGLE BLAZE
 JV5374'AND 6 FEET NORTH-NORTHWEST OF CUT EMBANKMENT.  THE MARK IS A
 JV5374'STANDARD REFERENCE DISK SET IN A 12X12 INCH CONCRETE MONUMENT,
 JV5374'FLUSH WITH THE GROUND AND THE DISK IS STAMPED BALTIMORE NE BASE NO
 JV5374'3 1940.
 JV5374'
 JV5374'W 14 (USGS) (AZIMUTH MARK) IS SET FLUSH IN A DRILL HOLE IN THE TOP
 JV5374'AND NEAR THE SOUTHEAST CORNER OF NORTHEAST ABUTMENT OF BALTIMORE
 JV5374'AND OHIO RAILROAD OVER PASS WHERE RAILROAD PASSES OVER A NARROW
 JV5374'SURFACED ROAD.  THE MARK IS A STANDARD GEOLOGICAL SURVEY BENCH
 JV5374'MARK DISK SET FLUSH IN A DRILL HOLE IN CONCRETE ABUTMENT AND THE
 JV5374'DISK IS STAMPED NO 14 1926 42.536 FT.
 JV5374'
 JV5374'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY NO. 40 AND GOLDEN
 JV5374'RING ROAD, GO EASTERLY ON U.S. HIGHWAY NO. 40 FOR 0.85 MILE TO
 JV5374'SOUTHWEST END OF OVERPASS.  BEAR RIGHT AND GO NORTHEASTERLY ALONG
 JV5374'SOUTHEAST SIDE OF HIGHWAY ON DIM TRACK ROAD FOR 0.1 MILE TO
 JV5374'STATION BETWEEN RAILROAD TRACKS AND HIGHWAY AS DESCRIBED.
 JV5374'
 JV5374'TO REACH AZIMUTH MARK FROM STATION GO SOUTHWESTERLY ON U.S.
 JV5374'HIGHWAY NO. 40 FOR 0.25 MILE TO SIGNAL LIGHT AT CROSSROADS.  TURN
 JV5374'LEFT AND GO SOUTHEASTERLY ON SURFACED ROAD FOR 0.15 MILE TO
 JV5374'RAILROAD OVERPASS AND AZIMUTH MARK ON OVERPASS AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5486 ***********************************************************************
 JV5486  DESIGNATION -  BALTIMORE PA PWR CO TWR 370 W
 JV5486  PID         -  JV5486
 JV5486  STATE/COUNTY-  MD/BALTIMORE
 JV5486  COUNTRY     -  US
 JV5486  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5486
 JV5486                         *CURRENT SURVEY CONTROL
 JV5486  ______________________________________________________________________
 JV5486* NAD 83(1991) POSITION- 39 16 06.35292(N) 076 30 00.92690(W)   ADJUSTED
 JV5486  ______________________________________________________________________
 JV5486  GEOID HEIGHT    -        -32.976 (meters)                     GEOID18
 JV5486  LAPLACE CORR    -         -2.06  (seconds)                    DEFLEC18
 JV5486  HORZ ORDER      -  THIRD
 JV5486
 JV5486.The horizontal coordinates were established by classical geodetic methods
 JV5486.and adjusted by the National Geodetic Survey in January 1992.
 JV5486
 JV5486.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5486.GEOID18 height accuracy estimate available here.
 JV5486
 JV5486.Click photographs - Photos may exist for this station.
 JV5486
 JV5486.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5486
 JV5486. The following values were computed from the NAD 83(1991) position.
 JV5486
 JV5486;                    North         East     Units Scale Factor Converg.
 JV5486;SPC MD       -   177,923.810   443,125.481   MT  0.99997328   +0 18 49.2
 JV5486;SPC MD       -   583,738.37  1,453,820.85   sFT  0.99997328   +0 18 49.2
 JV5486;UTM  18      - 4,347,638.003   370,579.391   MT  0.99980623   -0 56 59.0
 JV5486
 JV5486_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7057947638(NAD 83)
 JV5486
 JV5486                          SUPERSEDED SURVEY CONTROL
 JV5486
 JV5486  NAD 83(1986)-  39 16 06.34881(N)    076 30 00.93623(W) AD(       ) 3
 JV5486  NAD 27      -  39 16 05.96000(N)    076 30 02.08000(W) AD(       ) 3
 JV5486
 JV5486.Superseded values are not recommended for survey control.
 JV5486
 JV5486.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5486.See file dsdata.pdf to determine how the superseded data were derived.
 JV5486
 JV5486_MARKER: 55 = TOWER
 JV5486
 JV5486  HISTORY     - Date     Condition        Report By
 JV5486  HISTORY     - 1952     FIRST OBSERVED   CGS
 JV5486  HISTORY     - 19940406 GOOD             USPSQD
 JV5486  HISTORY     - 19950718 GOOD             USPSQD
 JV5486
 JV5486                          STATION DESCRIPTION
 JV5486
 JV5486'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (HAP)
 JV5486'6.2 MILES ESE OF BALTIMORE CITY HALL, ABOUT 0.2 MILE SE OF THE
 JV5486'INTERSECTION OF MERRITT AND WISE AVENUES, ABOUT 0.3 MILE NW OF
 JV5486'THE INTERSECTION OF CHURCH ROAD AND WISE AVENUE, AND ABOUT 200
 JV5486'FEET S OF WISE AVENUE.  THE HIGHEST AND MOST W OF THREE
 JV5486'TRANSMISSION TOWERS CARRYING PARALLEL LINES.  IT IS ON THE
 JV5486'PROPERTY OF THE PENNSYLVANIA WATER AND POWER COMPANY AND IS
 JV5486'NUMBERED G. AND E. CO. 370 W.  OBJECT SIGHTED ON IS THE CENTER
 JV5486'INSULATOR OF THREE INSULATORS ON TOP OF THE TOWER.
 JV5486
 JV5486                          STATION RECOVERY (1994)
 JV5486
 JV5486'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5486'RECOVERED IN GOOD CONDITION.
 JV5486
 JV5486                          STATION RECOVERY (1995)
 JV5486
 JV5486'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5486'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5625 ***********************************************************************
 JV5625  DESIGNATION -  BALTIMORE RADIO STA WITH MAST
 JV5625  PID         -  JV5625
 JV5625  STATE/COUNTY-  MD/BALTIMORE
 JV5625  COUNTRY     -  US
 JV5625  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5625
 JV5625                         *CURRENT SURVEY CONTROL
 JV5625  ______________________________________________________________________
 JV5625* NAD 83(1991) POSITION- 39 17 07.31368(N) 076 44 21.94195(W)   ADJUSTED
 JV5625  ______________________________________________________________________
 JV5625  GEOID HEIGHT    -        -32.323 (meters)                     GEOID18
 JV5625  LAPLACE CORR    -         -5.10  (seconds)                    DEFLEC18
 JV5625  HORZ ORDER      -  THIRD
 JV5625
 JV5625.The horizontal coordinates were established by classical geodetic methods
 JV5625.and adjusted by the National Geodetic Survey in January 1992.
 JV5625
 JV5625.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5625.GEOID18 height accuracy estimate available here.
 JV5625
 JV5625.Click photographs - Photos may exist for this station.
 JV5625
 JV5625.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5625
 JV5625. The following values were computed from the NAD 83(1991) position.
 JV5625
 JV5625;                    North         East     Units Scale Factor Converg.
 JV5625;SPC MD       -   179,717.779   422,480.853   MT  0.99997534   +0 09 48.8
 JV5625;SPC MD       -   589,624.08  1,386,089.27   sFT  0.99997534   +0 09 48.8
 JV5625;UTM  18      - 4,349,886.727   349,982.120   MT  0.99987710   -1 06 05.7
 JV5625
 JV5625_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4998249886(NAD 83)
 JV5625
 JV5625                          SUPERSEDED SURVEY CONTROL
 JV5625
 JV5625  NAD 83(1986)-  39 17 07.31082(N)    076 44 21.95035(W) AD(       ) 3
 JV5625  NAD 27      -  39 17 06.92900(N)    076 44 23.05000(W) AD(       ) 3
 JV5625
 JV5625.Superseded values are not recommended for survey control.
 JV5625
 JV5625.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5625.See file dsdata.pdf to determine how the superseded data were derived.
 JV5625
 JV5625_MARKER: 42 = RADIO/TV MAST
 JV5625_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5625+SATELLITE: SATELLITE OBSERVATIONS - December 06, 2003
 JV5625
 JV5625  HISTORY     - Date     Condition        Report By
 JV5625  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5625  HISTORY     - 1977     GOOD             NGS
 JV5625  HISTORY     - 1983     GOOD             NGS
 JV5625  HISTORY     - 19940801 GOOD             USPSQD
 JV5625  HISTORY     - 20030921 GOOD             USPSQD
 JV5625  HISTORY     - 20031206 GOOD             USPSQD
 JV5625
 JV5625                          STATION DESCRIPTION
 JV5625
 JV5625'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5625'STATION IS LOCATED ALONG BALTIMORE NATIONAL PIKE (U.S. HIGHWAY
 JV5625'40) ABOUT 7.0 MI. W-SW OF THE CENTER OF BALTIMORE, ABOUT 7.0
 JV5625'MI SE OF RANDALLSTOWN AND 0.65 E OF THE INTERSECTION OF
 JV5625'BALTIMORE NATIONAL PIKE AND ROLLING ROAD.  STATION IS OF STEEL
 JV5625'CONSTRUCTION ABOUT 350 FT. HIGH, PAINTED RED AND WHITE AND HAS
 JV5625'THE LETTERS WITH IN BLUE NEON ON THE SIDE OF THE MAST.  THE
 JV5625'POINT INTERSECTED WAS THE RED LIGHT ATOP MAST.
 JV5625
 JV5625                          STATION RECOVERY (1977)
 JV5625
 JV5625'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (DRM)
 JV5625'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5625'
 JV5625'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1.0 MILE NE OF
 JV5625'CATONSVILLE.
 JV5625
 JV5625                          STATION RECOVERY (1983)
 JV5625
 JV5625'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (MLS)
 JV5625'THE STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5625'
 JV5625'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1.0 MILES NE
 JV5625'OF CATONSVILLE.
 JV5625
 JV5625                          STATION RECOVERY (1994)
 JV5625
 JV5625'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5625'RECOVERED IN GOOD CONDITION.
 JV5625
 JV5625                          STATION RECOVERY (2003)
 JV5625
 JV5625'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5625'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS AT THE STATE
 JV5625'HIGHWAY ADMINISTRATION COMMUNICATIONS FACILITY.  IT IS A THREE-LEGGED
 JV5625'SELF-SUPPORTING MAST.  NOTE-- THERE ARE NO BLUE NEON LETTERS ON THE
 JV5625'SIDE OF THE MAST.
 JV5625
 JV5625                          STATION RECOVERY (2003)
 JV5625
 JV5625'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV5625'FOUND IN GOOD CONDITION.  HOWEVER, NO CALL LETTERS ON MAST.
 JV5625'OTHERWISE, DESCRIBED ADEQUATELY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5744 ***********************************************************************
 JV5744  DESIGNATION -  BALTIMORE RADIO STA WFBR MAST
 JV5744  PID         -  JV5744
 JV5744  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5744  COUNTRY     -  US
 JV5744  USGS QUAD   -  CURTIS BAY (2016)
 JV5744
 JV5744                         *CURRENT SURVEY CONTROL
 JV5744  ______________________________________________________________________
 JV5744* NAD 83(1991) POSITION- 39 12 15.76913(N) 076 34 05.67176(W)   NO CHECK
 JV5744* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5744  ______________________________________________________________________
 JV5744  GEOID HEIGHT    -        -32.935 (meters)                     GEOID18
 JV5744  LAPLACE CORR    -         -3.81  (seconds)                    DEFLEC18
 JV5744  HORZ ORDER      -  THIRD
 JV5744
 JV5744.The horizontal coordinates were established by classical geodetic methods
 JV5744.and adjusted by the National Geodetic Survey in January 1992.
 JV5744
 JV5744.No horizontal observational check was made to the station.
 JV5744
 JV5744.The orthometric height was scaled from a topographic map.
 JV5744
 JV5744.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5744.GEOID18 height accuracy estimate available here.
 JV5744
 JV5744.Click photographs - Photos may exist for this station.
 JV5744
 JV5744.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5744
 JV5744. The following values were computed from the NAD 83(1991) position.
 JV5744
 JV5744;                    North         East     Units Scale Factor Converg.
 JV5744;SPC MD       -   170,783.225   437,292.393   MT  0.99996625   +0 16 15.5
 JV5744;SPC MD       -   560,311.30  1,434,683.46   sFT  0.99996625   +0 16 15.5
 JV5744;UTM  18      - 4,340,628.793   364,591.263   MT  0.99982576   -0 59 29.1
 JV5744
 JV5744!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5744!SPC MD       -   1.00000521  x   0.99996625  =   0.99997146
 JV5744!UTM  18      -   1.00000521  x   0.99982576  =   0.99983096
 JV5744
 JV5744_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6459140628(NAD 83)
 JV5744
 JV5744                          SUPERSEDED SURVEY CONTROL
 JV5744
 JV5744  NAD 83(1986)-  39 12 15.76474(N)    076 34 05.67846(W) AD(       ) 3
 JV5744  NAD 27      -  39 12 15.37672(N)    076 34 06.80633(W) AD(       ) 3
 JV5744
 JV5744.Superseded values are not recommended for survey control.
 JV5744
 JV5744.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5744.See file dsdata.pdf to determine how the superseded data were derived.
 JV5744
 JV5744_MARKER: 42 = RADIO/TV MAST
 JV5744_MARK LOGO: NGS
 JV5744_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5744+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2003
 JV5744
 JV5744  HISTORY     - Date     Condition        Report By
 JV5744  HISTORY     - 1981     FIRST OBSERVED   NGS
 JV5744  HISTORY     - 20010331 GOOD             NGS
 JV5744  HISTORY     - 20030930 GOOD             USPSQD
 JV5744
 JV5744                          STATION DESCRIPTION
 JV5744
 JV5744'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 JV5744'THE STATION IS LOCATED ABOUT 14.5 KM (9.00 MI) SOUTH-SOUTHEAST OF
 JV5744'BALTIMORE, 9.65 KM (6.00 MI) NORTH-NORTHEAST OF GLEN BURNIE AND JUST
 JV5744'NORTH OF A COAST GUARD STATION.  OWNERSHIP--BALTIMORE RADIO STATION
 JV5744'WFBR.
 JV5744'TO REACH FROM THE INTERSECTION OF QUARANTINE ROAD AND INTERSTATE
 JV5744'HIGHWAY 695 WHICH IS JUST NORTHEAST OF GLEN BURNIE, GO SOUTH ON
 JV5744'QUARANTINE ROAD FOR 0.25 KM (0.15 MI) TO A T-INTERSECTION.  TURN RIGHT
 JV5744'AND GO WEST ON PENNINGTON AVENUE FOR 1.35 KM (0.85 MI) TO THE STATION
 JV5744'ON THE LEFT.
 JV5744'THE STATION IS THE TOP AND CENTER OF THE MAST WHICH IS ABOUT 76 M
 JV5744'(250 FT) IN HEIGHT AND PAINTED RED AND WHITE IN COLOR.  THIS STATION
 JV5744'WAS CALLED BALTIMORE WMAR CHANNEL 2 TV MAST IN THE DESCRIPTION FOR
 JV5744'STATION SNOW 2 1970.
 JV5744
 JV5744                          STATION RECOVERY (2001)
 JV5744
 JV5744'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV5744'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV5744
 JV5744                          STATION RECOVERY (2003)
 JV5744
 JV5744'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5744'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5487 ***********************************************************************
 JV5487  DESIGNATION -  BALTIMORE ST JAMES CATH CHURCH
 JV5487  PID         -  JV5487
 JV5487  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5487  COUNTRY     -  US
 JV5487  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5487
 JV5487                         *CURRENT SURVEY CONTROL
 JV5487  ______________________________________________________________________
 JV5487* NAD 83(1991) POSITION- 39 18 04.56672(N) 076 36 06.63118(W)   ADJUSTED
 JV5487  ______________________________________________________________________
 JV5487  GEOID HEIGHT    -        -32.734 (meters)                     GEOID18
 JV5487  LAPLACE CORR    -         -5.22  (seconds)                    DEFLEC18
 JV5487  HORZ ORDER      -  THIRD
 JV5487
 JV5487.The horizontal coordinates were established by classical geodetic methods
 JV5487.and adjusted by the National Geodetic Survey in January 1992.
 JV5487
 JV5487.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5487.GEOID18 height accuracy estimate available here.
 JV5487
 JV5487.Click photographs - Photos may exist for this station.
 JV5487
 JV5487.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5487
 JV5487. The following values were computed from the NAD 83(1991) position.
 JV5487
 JV5487;                    North         East     Units Scale Factor Converg.
 JV5487;SPC MD       -   181,526.186   434,343.366   MT  0.99997736   +0 14 59.6
 JV5487;SPC MD       -   595,557.16  1,425,008.19   sFT  0.99997736   +0 14 59.6
 JV5487;UTM  18      - 4,351,432.643   361,880.228   MT  0.99983489   -1 00 53.1
 JV5487
 JV5487_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6188051432(NAD 83)
 JV5487
 JV5487                          SUPERSEDED SURVEY CONTROL
 JV5487
 JV5487  NAD 83(1986)-  39 18 04.56295(N)    076 36 06.63972(W) AD(       ) 3
 JV5487  NAD 27      -  39 18 04.17700(N)    076 36 07.75700(W) AD(       ) 3
 JV5487  USSD        -  39 18 04.54000(N)    076 36 07.59000(W) AD(       ) 3
 JV5487
 JV5487.Superseded values are not recommended for survey control.
 JV5487
 JV5487.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5487.See file dsdata.pdf to determine how the superseded data were derived.
 JV5487
 JV5487_MARKER: 90 = CHURCH SPIRE
 JV5487_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5487+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5487
 JV5487  HISTORY     - Date     Condition        Report By
 JV5487  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5487  HISTORY     - 20041229 GOOD             GEOCAC
 JV5487  HISTORY     - 20110315 GOOD             GEOCAC
 JV5487
 JV5487                          STATION DESCRIPTION
 JV5487
 JV5487'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5487'STATION IS LOCATED AT THE INTERSECTION OF EAST EAGER AND
 JV5487'AISQUITH STREETS IN BALTIMORE.  STATION IS ABOUT 320 FEET
 JV5487'HIGH.  THE POINT INTERSECTED WAS THE CROSS ON TOP THE SPIRE.
 JV5487
 JV5487                          STATION RECOVERY (2004)
 JV5487
 JV5487'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV5487'FORMER CATHOLIC CHURCH NOW KNOWN AS URBAN BIBLE FELLOWSHIP CHURCH.
 JV5487'LOCATED ON THE EAST SIDE OF AISQUITH BETWEEN EAGER STREET AND ASHLAND
 JV5487'AVENUE, AND ABOUT THREE BLOCKS EAST OF THE CITY JAIL COMPLEX.
 JV5487
 JV5487                          STATION RECOVERY (2011)
 JV5487
 JV5487'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5487'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5480 ***********************************************************************
 JV5480  DESIGNATION -  BALTIMORE SW BASE
 JV5480  PID         -  JV5480
 JV5480  STATE/COUNTY-  MD/BALTIMORE
 JV5480  COUNTRY     -  US
 JV5480  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5480
 JV5480                         *CURRENT SURVEY CONTROL
 JV5480  ______________________________________________________________________
 JV5480* NAD 83(1991) POSITION- 39 18 38.95072(N) 076 31 14.67014(W)   ADJUSTED
 JV5480* NAVD 88 ORTHO HEIGHT -    14.    (meters)       46.    (feet) SCALED
 JV5480  ______________________________________________________________________
 JV5480  GEOID HEIGHT    -        -32.899 (meters)                     GEOID18
 JV5480  LAPLACE CORR    -         -3.47  (seconds)                    DEFLEC18
 JV5480  HORZ ORDER      -  FIRST
 JV5480
 JV5480.The horizontal coordinates were established by classical geodetic methods
 JV5480.and adjusted by the National Geodetic Survey in January 1992.
 JV5480
 JV5480.The orthometric height was scaled from a topographic map.
 JV5480
 JV5480.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5480.GEOID18 height accuracy estimate available here.
 JV5480
 JV5480.Click photographs - Photos may exist for this station.
 JV5480
 JV5480.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5480
 JV5480. The following values were computed from the NAD 83(1991) position.
 JV5480
 JV5480;                    North         East     Units Scale Factor Converg.
 JV5480;SPC MD       -   182,620.143   441,333.097   MT  0.99997861   +0 18 02.9
 JV5480;SPC MD       -   599,146.25  1,447,940.34   sFT  0.99997861   +0 18 02.9
 JV5480;UTM  18      - 4,352,371.938   368,891.312   MT  0.99981165   -0 57 48.8
 JV5480
 JV5480!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5480!SPC MD       -   1.00000300  x   0.99997861  =   0.99998161
 JV5480!UTM  18      -   1.00000300  x   0.99981165  =   0.99981465
 JV5480
 JV5480:                Primary Azimuth Mark                     Grid Az
 JV5480:SPC MD       -  BALTIMORE SW BASE AZ MK                  235 25 21.0
 JV5480:UTM  18      -  BALTIMORE SW BASE AZ MK                  236 41 12.7
 JV5480
 JV5480_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6889152371(NAD 83)
 JV5480
 JV5480|---------------------------------------------------------------------|
 JV5480| PID    Reference Object                     Distance      Geod. Az  |
 JV5480|                                                           dddmmss.s |
 JV5480| CA9932 BALTIMORE SW BASE RM 2               34.071 METERS 04653     |
 JV5480| JV5252 CRAIGHILL CHAN REAR RNG LT          APPROX.14.2 KM 1294504.6 |
 JV5480| JV5396 BALTIMORE CITY SEWAGE PLANT TK      APPROX. 2.8 KM 1331058.6 |
 JV5480| JV5479 BALTIMORE SW BASE 2                  46.094 METERS 18418     |
 JV5480| JV5477 BALTIMORE CROSSE BLACKWELL TK       APPROX. 2.8 KM 1982127.9 |
 JV5480| JV5611 BALTIMORE SW BASE AZ MK             APPROX. 0.6 KM 2354323.9 |
 JV5480| JV5494 BALTIMORE CITY COLLEGE TOWER        APPROX. 6.8 KM 2842651.1 |
 JV5480| CA9931 BALTIMORE SW BASE RM 1               35.473 METERS 35445     |
 JV5480|---------------------------------------------------------------------|
 JV5480
 JV5480                          SUPERSEDED SURVEY CONTROL
 JV5480
 JV5480  NAD 83(1986)-  39 18 38.94640(N)    076 31 14.67907(W) AD(       ) 1
 JV5480  NAD 27      -  39 18 38.55800(N)    076 31 15.81200(W) AD(       ) 1
 JV5480
 JV5480.Superseded values are not recommended for survey control.
 JV5480
 JV5480.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5480.See file dsdata.pdf to determine how the superseded data were derived.
 JV5480
 JV5480_MARKER: DS = TRIANGULATION STATION DISK
 JV5480_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5480_STAMPING: BALTIMORE SW BASE 1940
 JV5480_MARK LOGO: CGS
 JV5480_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5480+STABILITY: SURFACE MOTION
 JV5480
 JV5480  HISTORY     - Date     Condition        Report By
 JV5480  HISTORY     - 1940     MONUMENTED       CGS
 JV5480  HISTORY     - 1954     SEE DESCRIPTION  CGS
 JV5480
 JV5480                          STATION DESCRIPTION
 JV5480
 JV5480'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5480'STATION IS LOCATED ON THE E SIDE OF BALTIMORE ABOUT 5 MILES E OF
 JV5480'THE WASHINGTON MONUMENT, ON THE S SIDE OF U.S. HIGHWAY 40 AND ON
 JV5480'THE N SIDE OF THE BALTIMORE AND OHIO RAILROAD TRACKS AND ON
 JV5480'PROPERTY OWNED BY THE CHAMPION BRICK COMPANY.  THE EXACT LOCATION
 JV5480'IS ABOUT 25 METERS N OF THE RAILROAD TRACKS AND ABOUT 50 METERS W
 JV5480'OF A DIRT ROAD WHICH LEADS ACROSS THE TRACKS.  IT IS AT THE TOP
 JV5480'OF A BANK OF THE RAILROAD CUT, AND, TO THE W AND N IS A DEEP
 JV5480'EXCAVATION WHERE CLAY HAS BEEN REMOVED BY THE BRICK COMPANY.
 JV5480'
 JV5480'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV5480'BRONZE DISKS SET IN CONCRETE.
 JV5480'
 JV5480'REFERENCE MARK NO.1 IS LOCATED N OF THE STATION AT ABOUT 3 FEET
 JV5480'LOWER ELEVATION.
 JV5480'
 JV5480'REFERENCE MARK NO.2 IS LOCATED NNELY FROM THE STATION AT ABOUT 5
 JV5480'FEET LOWER ELEVATION.
 JV5480'
 JV5480'REFERENCE MARK NO.3 IS LOCATED SE OF THE STATION AND ACROSS THE
 JV5480'RAILROAD TRACKS.
 JV5480'
 JV5480'THE AZIMUTH MARK IS LOCATED ABOUT 0.2 MILE SW OF THE STATION AT
 JV5480'THE E END OF E 63RD STREET, AND ABOUT 10 PACES E OF A SPUR LINE OF
 JV5480'THE BALTIMORE AND OHIO RAILROAD TRACKS.
 JV5480'
 JV5480'TO REACH THE STATION FROM THE INTERSECTION OF HAMILTON AVENUE AND
 JV5480'U.S. HIGHWAY 40, GO SW 1.1 MILES TO A DIRT ROAD LEADING S AND E AT
 JV5480'THE SUMMIT OF A HILL.  THIS SUMMIT IS 0.3 MILE W OF THE ENTRANCE TO
 JV5480'THE CHAMPION BRICK COMPANY.  ENTER THIS ROAD AND FOLLOW IT DOWN
 JV5480'HILL ABOUT 0.25 MILE, BEARING TO THE LEFT UNTIL THE RAILROAD
 JV5480'CROSSING IS SIGHTED.  ABOUT 15 METERS N OF THE CROSSING TAKE A
 JV5480'DIM ROAD, TO THE RIGHT, LEADING UP A STEEP GRADE.  GO UP THIS
 JV5480'HILL ABOUT 50 METERS TO THE STATION, WHICH IS NEAR THE EDGE
 JV5480'OF THE RAILROAD CUT AND THE EXCAVATION MADE BY THE BRICK
 JV5480'COMPANY.
 JV5480'
 JV5480'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 JV5480
 JV5480                          STATION RECOVERY (1954)
 JV5480
 JV5480'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 JV5480'THIS STATION AND REFERENCE MARKS 1 AND 2 HAVE BEEN DESTROYED TO
 JV5480'MAKE WAY FOR A LARGE SCALE EXCAVATION OF THE AREA.
 JV5480'
 JV5480'A NEW STATION, BALTIMORE SOUTHWEST BASE 2, WAS ESTABLISHED TO
 JV5480'REPLACE BALTIMORE SOUTHWEST BASE.  REFERENCE MARK 3 AND THE AZIMUTH
 JV5480'MARK WERE NOT DESTROYED AND ARE TIED IN WITH BALTIMORE SOUTHWEST
 JV5480'BASE 2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5479 ***********************************************************************
 JV5479  DESIGNATION -  BALTIMORE SW BASE 2
 JV5479  PID         -  JV5479
 JV5479  STATE/COUNTY-  MD/BALTIMORE
 JV5479  COUNTRY     -  US
 JV5479  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5479
 JV5479                         *CURRENT SURVEY CONTROL
 JV5479  ______________________________________________________________________
 JV5479* NAD 83(1991) POSITION- 39 18 37.46026(N) 076 31 14.81414(W)   NO CHECK
 JV5479* NAVD 88 ORTHO HEIGHT -    14.    (meters)       46.    (feet) SCALED
 JV5479  ______________________________________________________________________
 JV5479  GEOID HEIGHT    -        -32.900 (meters)                     GEOID18
 JV5479  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 JV5479  HORZ ORDER      -  SECOND
 JV5479
 JV5479.The horizontal coordinates were established by classical geodetic methods
 JV5479.and adjusted by the National Geodetic Survey in January 1992.
 JV5479
 JV5479.No horizontal observational check was made to the station.
 JV5479
 JV5479.The orthometric height was scaled from a topographic map.
 JV5479
 JV5479.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5479.GEOID18 height accuracy estimate available here.
 JV5479
 JV5479.Click photographs - Photos may exist for this station.
 JV5479
 JV5479.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5479
 JV5479. The following values were computed from the NAD 83(1991) position.
 JV5479
 JV5479;                    North         East     Units Scale Factor Converg.
 JV5479;SPC MD       -   182,574.161   441,329.888   MT  0.99997856   +0 18 02.8
 JV5479;SPC MD       -   598,995.39  1,447,929.81   sFT  0.99997856   +0 18 02.8
 JV5479;UTM  18      - 4,352,326.046   368,887.091   MT  0.99981166   -0 57 48.9
 JV5479
 JV5479!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5479!SPC MD       -   1.00000300  x   0.99997856  =   0.99998156
 JV5479!UTM  18      -   1.00000300  x   0.99981166  =   0.99981466
 JV5479
 JV5479:                Primary Azimuth Mark                     Grid Az
 JV5479:SPC MD       -  BALTIMORE SW BASE AZ MK                  238 47 13.3
 JV5479:UTM  18      -  BALTIMORE SW BASE AZ MK                  240 03 05.0
 JV5479
 JV5479_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6888752326(NAD 83)
 JV5479
 JV5479|---------------------------------------------------------------------|
 JV5479| PID    Reference Object                     Distance      Geod. Az  |
 JV5479|                                                           dddmmss.s |
 JV5479| JV5480 BALTIMORE SW BASE                    46.094 METERS 00418     |
 JV5479| CA9933 BALTIMORE SW BASE RM 3                             05338     |
 JV5479| CA9935 BALTIMORE SW BASE 2 RM 5            210.960 METERS 05611     |
 JV5479| JV5378 BACK R BALT CITY SEWER PLT STK      APPROX. 3.3 KM 1330013.7 |
 JV5479| JV5481 BALTIMORE BUR WATER SUPPLY TK       APPROX. 2.2 KM 1940830.1 |
 JV5479| CA9936 BALTIMORE SW BASE 2 RM 6             78.770 METERS 23621     |
 JV5479| JV5611 BALTIMORE SW BASE AZ MK             APPROX. 0.6 KM 2390516.1 |
 JV5479| CA9934 BALTIMORE SW BASE RM 4               21.214 METERS 32234     |
 JV5479|---------------------------------------------------------------------|
 JV5479
 JV5479                          SUPERSEDED SURVEY CONTROL
 JV5479
 JV5479  NAD 83(1986)-  39 18 37.45595(N)    076 31 14.82307(W) AD(       ) 2
 JV5479  NAD 27      -  39 18 37.06700(N)    076 31 15.95600(W) AD(       ) 2
 JV5479
 JV5479.Superseded values are not recommended for survey control.
 JV5479
 JV5479.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5479.See file dsdata.pdf to determine how the superseded data were derived.
 JV5479
 JV5479_MARKER: DS = TRIANGULATION STATION DISK
 JV5479_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5479_STAMPING: BALTIMORE SW BASE NO 2 1954
 JV5479_MARK LOGO: CGS
 JV5479_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5479+STABILITY: SURFACE MOTION
 JV5479
 JV5479  HISTORY     - Date     Condition        Report By
 JV5479  HISTORY     - 1954     MONUMENTED       CGS
 JV5479  HISTORY     - 1955     GOOD             CGS
 JV5479  HISTORY     - 1970     GOOD             MDDT
 JV5479  HISTORY     - 1971     GOOD             NGS
 JV5479  HISTORY     - 19950915 GOOD             USPSQD
 JV5479  HISTORY     - 19951018 GOOD             USPSQD
 JV5479
 JV5479                          STATION DESCRIPTION
 JV5479
 JV5479'DESCRIBED BY COAST AND GEODETIC SURVEY 1954 (EHK)
 JV5479'STATION IS LOCATED ON THE E SIDE OF BALTIMORE, ABOUT 5 MI. E OF
 JV5479'THE WASHINGTON MONUMENT, ON THE S SIDE OF U.S. HIGHWAY 40, AND
 JV5479'ON THE S SIDE OF THE BALTIMORE AND OHIO RAILROAD TRACKS.
 JV5479'
 JV5479'TO REACH THE STATION, PROCEED NE ALONG U.S. ROUTE 40 FOR 0.2
 JV5479'MI. NE OF THE CITY LINE JUST BEYOND A BRICK WAREHOUSE OF A DRUG
 JV5479'COMPANY, THENCE 0.3 MI. SE ALONG A DIRT ROAD LEADING TO THE
 JV5479'MARYLAND BRASS AND METAL COMPANY.  THE STATION IS 267 FT. SW OF
 JV5479'THE INTERSECTION OF THIS DIRT ROAD WITH THE BALTIMORE AND OHIO
 JV5479'RAILROAD TRACKS.
 JV5479'
 JV5479'STATION MARK, A STANDARD DISK IN A 1-FT. ROUND CONCRETE MONUMENT,
 JV5479'STAMPED BALTIMORE SW BASE NO 2 1954, IS 21.6 FT. SE OF THE SE RAIL
 JV5479'OF THE SE TRACK OF THE B. AND O. R.R., 12.6 FT. NW OF A TELEPHONE
 JV5479'POLE, AND ON LINE WITH THE POLE LINE.  MONUMENT PROJECTS 1
 JV5479'IN. ABOVE GROUND.
 JV5479'
 JV5479'REFERENCE MARK 3, A STANDARD DISK, STAMPED BALTIMORE SW BASE
 JV5479'NO 3 1940 AND SET IN A 1-FT. SQUARE CONCRETE MONUMENT, IS 174 FT. SW
 JV5479'OF THE CENTERLINE OF THE AFOREMENTIONED GRADE CROSSING, AND 21.0
 JV5479'FT. SE OF THE SE RAIL OF THE SE TRACK.  THE ARROW ON THE DISK
 JV5479'POINTS NW TO THE LOCATION OF STATION BALTIMORE SOUTHWEST BASE WHICH
 JV5479'IS TO BE DESTROYED.
 JV5479'
 JV5479'REFERENCE MARK 4, A STANDARD DISK, STAMPED BALT SW BASE NO 4
 JV5479'1954 AND SET IN A 6-IN. ROUND CONCRETE MONUMENT ON AN 8-FT. RIDGE,
 JV5479'25.7 FT. NW OF THE NW RAIL OF THE NW TRACK, AND IS 5.4 FT. E
 JV5479'OF A TELEPHONE POLE.
 JV5479'
 JV5479'AZIMUTH MARK, A STANDARD DISK SET IN A 1-FT. SQUARE CONCRETE
 JV5479'MONUMENT AND STAMPED BALTIMORE SW BASE 1940, IS AT THE E END OF
 JV5479'EAST 63RD STREET, IN LINE WITH THE CENTERLINE OF THE STREET, 41.8
 JV5479'FT. E OF THE NE CORNER OF A WHITE STUCCO HOUSE, AND 41.8 FT. NW
 JV5479'OF THE NW RAIL OF THE NW TRACK OF THE B. AND O. R.R.
 JV5479
 JV5479                          STATION RECOVERY (1955)
 JV5479
 JV5479'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (EHK)
 JV5479'STATION, REFERENCE MARK NO. 3, AND AZIMUTH MARK RECOVERED IN GOOD
 JV5479'CONDITION.  THE REFERENCES IN THE DESCRIPTION OF THE STATION MARK
 JV5479'SHOULD BE CORRECTED TO READ AS FOLLOWS--IS 26.1 FEET SE OF THE SE
 JV5479'RAIL OF THE SE TRACK OF THE MAIN LINE OF THE B. AND O. R.R., 12.6
 JV5479'FEET NE OF TELEPHONE POLE NO. 87-30, AND ON LINE WITH THE POLE
 JV5479'LINE.
 JV5479'
 JV5479'REFERENCE MARK NO. 4, 1954 WAS DESTROYED DURING GRADING OF THE
 JV5479'AREA FOR CONSTRUCTION WORK.
 JV5479'
 JV5479'DISTANCE TO REFERENCE MARK NO. 3, 1940 WAS MEASURED AND FOUND TO
 JV5479'BE CORRECT.
 JV5479'
 JV5479'OFFICE NOTE--R.M. DISK STAMPED BALT. S.W. BASE NO 4 1954
 JV5479'RECEIVED AT THIS OFFICE 11/17/55.
 JV5479
 JV5479                          STATION RECOVERY (1970)
 JV5479
 JV5479'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1970
 JV5479'REFERENCE MARKS 3 AND 4 HAVE BEEN DESTROYED BY GRADING.
 JV5479'
 JV5479'THE STATION AND AZIMUTH MARKS WERE RECOVERED IN GOOD CONDITION.
 JV5479'
 JV5479'REFERENCES IN THE DESCRIPTION OF STATION MARK SHOULD BE CORRECTED
 JV5479'AS FOLLOWS--
 JV5479'
 JV5479'28.1 FEET NE OF TELEPHONE POLE 87-30 (NEW POLE)
 JV5479'
 JV5479'26.1 FEET SE OF SE RAIL OF SE TRACK OF B AND O RAILROAD.
 JV5479
 JV5479                          STATION RECOVERY (1971)
 JV5479
 JV5479'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV5479'STATION MARK AND AZIMUTH MARK WERE FOUND IN GOOD CONDITION.  BOTH
 JV5479'REFERENCE MARKS HAD BEEN DESTROYED.  TWO NEW REFERENCE MARKS WERE
 JV5479'ESTABLISHED.  A COMPLETE DESCRIPTION FOLLOWS--
 JV5479'
 JV5479'STATION IS LOCATED ALONG SOUTHEAST SIDE OF THE BALTIMORE AND OHIO
 JV5479'RAILROAD TRACKS, JUST NORTHWEST OF A LARGE POND WITH 3 RADIO MASTS
 JV5479'IN IT, AND ON LAND OF THE ROBB-TYLER REFUSE CO.
 JV5479'
 JV5479'TO REACH STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV5479'EXIT 5 OF THE HARBOR TUNNEL THRUWAY, GO NORTHEAST ON U.S. HIGHWAY 40
 JV5479'FOR 1.35 MILES.  TURN RIGHT ON 65TH ST. AND GO 0.2 MILE.  TAKE
 JV5479'RIGHT FORK, GRAVEL ROAD, AND GO 0.25 MILE TO RAILROAD
 JV5479'CROSSING.  CROSS TRACKS AND GO RIGHT, PASSING THROUGH CABLE GATE,
 JV5479'FOR 267 FEET TO STATION ON RIGHT.
 JV5479'
 JV5479'STATION MARK IS A STANDARD DISK STAMPED BALTIMORE SW BASE 2 1954,
 JV5479'SET IN THE TOP OF A CONCRETE MONUMENT 6 INCHES BENEATH GROUND.  IT
 JV5479'IS 26.2 FEET SOUTHEAST OF SOUTHEAST RAIL OF DOUBLE TRACKS, 267 FEET
 JV5479'SOUTHWEST OF CENTER OF THE RR CROSSING, 70.6 FEET SOUTHWEST OF THE
 JV5479'3RD TELEGRAPH POLE FROM THE CROSSING, 28.2 FEET NORTHEAST OF THE
 JV5479'4TH TELEGRAPH POLE (NO NUMBERS ON THESE NEW POLES), 3 FEET
 JV5479'NORTHEAST OF A METAL WITNESS POST, AND 27 FEET SOUTHWEST OF
 JV5479'RANGE OF NORTHEAST END OF LARGE BRICK WAREHOUSE OF THE
 JV5479'BALTIMORE-WARNER PAPER CO.
 JV5479'
 JV5479'REFERENCE MARK NUMBER FIVE IS A STANDARD DISK STAMPED BALTIMORE
 JV5479'SW BASE 2 1954 NO 5 1971, SET IN THE TOP OF A 10-INCH-DIAMETER,
 JV5479'CONCRETE MONUMENT FLUSH WITH GROUND.  IT IS 26.0 FEET SOUTHEAST OF
 JV5479'SOUTHEAST RAIL OF RR TRACKS, 1.7 FEET WEST OF THE 3RD TELEGRAPH
 JV5479'POLE, AND 0.7 FOOT HIGHER THAN STATION MARK.
 JV5479'
 JV5479'REFERENCE MARK NUMBER SIX IS A STANDARD DISK STAMPED BALTIMORE SW
 JV5479'BASE 2 1954 NO 6 1971, SET IN THE TOP OF A 10-INCH-DIAMETER,
 JV5479'CONCRETE MONUMENT FLUSH WITH GROUND.  IT IS 26.0 FEET SOUTHEAST OF
 JV5479'SOUTHEAST RAIL OF RR TRACKS, 2 FEET NORTHEAST OF THE 4TH TELEGRAPH
 JV5479'POLE, AND 0.2 FOOT HIGHER THAN STATION MARK.
 JV5479'
 JV5479'AZIMUTH MARK IS A STANDARD DISK STAMPED BALTIMORE SW BASE 1940 SET
 JV5479'IN THE TOP OF A 12-INCH-SQUARE, CONCRETE MONUMENT PROJECTING 3
 JV5479'INCHES FROM GROUND.  ON LAWN TERRACE, 41.8 FEET NORTHWEST OF
 JV5479'NORTHWEST RAIL OF RR TRACKS, 42 FEET SOUTHEAST OF POWER POLE
 JV5479'213303, AND 9.5 FEET NORTHEAST OF FENCE CORNER.  TO REACH FROM
 JV5479'JUNCTION OF U.S. HIGHWAY 40 AND 63RD ST., GO SOUTHEAST ON 63RD
 JV5479'ST. FOR 1/4 MILE TO END OF STREET AND AZIMUTH MARK.
 JV5479'
 JV5479'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5479'AT EAST EDGE OF BALTIMORE.
 JV5479
 JV5479                          STATION RECOVERY (1995)
 JV5479
 JV5479'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5479'RECOVERED IN GOOD CONDITION.
 JV5479
 JV5479                          STATION RECOVERY (1995)
 JV5479
 JV5479'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5479'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5497 ***********************************************************************
 JV5497  DESIGNATION -  BALTIMORE TRUST FLAT TOP TOWER
 JV5497  PID         -  JV5497
 JV5497  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5497  COUNTRY     -  US
 JV5497  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5497
 JV5497                         *CURRENT SURVEY CONTROL
 JV5497  ______________________________________________________________________
 JV5497* NAD 83(1991) POSITION- 39 17 21.14764(N) 076 36 50.56445(W)   ADJUSTED
 JV5497  ______________________________________________________________________
 JV5497  GEOID HEIGHT    -        -32.722 (meters)                     GEOID18
 JV5497  LAPLACE CORR    -         -5.52  (seconds)                    DEFLEC18
 JV5497  HORZ ORDER      -  THIRD
 JV5497
 JV5497.The horizontal coordinates were established by classical geodetic methods
 JV5497.and adjusted by the National Geodetic Survey in January 1992.
 JV5497
 JV5497.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5497.GEOID18 height accuracy estimate available here.
 JV5497
 JV5497.Click photographs - Photos may exist for this station.
 JV5497
 JV5497.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5497
 JV5497. The following values were computed from the NAD 83(1991) position.
 JV5497
 JV5497;                    North         East     Units Scale Factor Converg.
 JV5497;SPC MD       -   180,182.699   433,296.397   MT  0.99997582   +0 14 32.1
 JV5497;SPC MD       -   591,149.40  1,421,573.26   sFT  0.99997582   +0 14 32.1
 JV5497;UTM  18      - 4,350,112.773   360,804.015   MT  0.99983857   -1 01 20.0
 JV5497
 JV5497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6080450112(NAD 83)
 JV5497
 JV5497                          SUPERSEDED SURVEY CONTROL
 JV5497
 JV5497  NAD 83(1986)-  39 17 21.14409(N)    076 36 50.57319(W) AD(       ) 3
 JV5497  NAD 27      -  39 17 20.77000(N)    076 36 51.67800(W) AD(       ) 3
 JV5497
 JV5497.Superseded values are not recommended for survey control.
 JV5497
 JV5497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5497.See file dsdata.pdf to determine how the superseded data were derived.
 JV5497
 JV5497_MARKER: 55 = TOWER
 JV5497_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5497+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5497
 JV5497  HISTORY     - Date     Condition        Report By
 JV5497  HISTORY     - 1938     FIRST OBSERVED   CGS
 JV5497  HISTORY     - 1952     GOOD             CGS
 JV5497  HISTORY     - 19981011 GOOD             USPSQD
 JV5497  HISTORY     - 20110315 GOOD             GEOCAC
 JV5497
 JV5497                          STATION DESCRIPTION
 JV5497
 JV5497'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV5497'INTERSECTION STATION ON TOP OF CENTER OF FLAT TOP TOWER ON THE
 JV5497'BALTIMORE TRUST BUILDING.  LOCATED AT THE SW CORNER OF BALTIMORE
 JV5497'AND LIGHT STREETS.
 JV5497
 JV5497                          STATION RECOVERY (1952)
 JV5497
 JV5497'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (HAP)
 JV5497'THIS BUILDING IS NOW KNOWN AS THE MATHIESON BUILDING.  AN
 JV5497'ADDITIONAL ROOM, ABOUT 13 BY 13 FEET, HAS BEEN CONSTRUCTED ON TOP
 JV5497'OF THE BUILDING TOWER BY THE OPERATORS OF TELEVISION STATION
 JV5497'WMAR.  THIS ROOM IS NOT CENTERED ON THE TOWER SO THAT ALL
 JV5497'OBSERVATIONS TO THE CENTER OF THE FLAT TOP TOWER SHOULD BE MADE
 JV5497'TO THE MASONRY STRUCTURE AND NOT TO THE ADDITIONAL ROOM.
 JV5497
 JV5497                          STATION RECOVERY (1998)
 JV5497
 JV5497'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV5497'RECOVERED IN GOOD CONDITION.
 JV5497
 JV5497                          STATION RECOVERY (2011)
 JV5497
 JV5497'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5497'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5496 ***********************************************************************
 JV5496  DESIGNATION -  BALTIMORE TV STATION WMAR MAST
 JV5496  PID         -  JV5496
 JV5496  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5496  COUNTRY     -  US
 JV5496  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5496
 JV5496                         *CURRENT SURVEY CONTROL
 JV5496  ______________________________________________________________________
 JV5496* NAD 83(1991) POSITION- 39 17 21.09070(N) 076 36 50.55910(W)   ADJUSTED
 JV5496  ______________________________________________________________________
 JV5496  GEOID HEIGHT    -        -32.722 (meters)                     GEOID18
 JV5496  LAPLACE CORR    -         -5.52  (seconds)                    DEFLEC18
 JV5496  HORZ ORDER      -  THIRD
 JV5496
 JV5496.The horizontal coordinates were established by classical geodetic methods
 JV5496.and adjusted by the National Geodetic Survey in January 1992.
 JV5496
 JV5496.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5496.GEOID18 height accuracy estimate available here.
 JV5496
 JV5496.Click photographs - Photos may exist for this station.
 JV5496
 JV5496.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5496
 JV5496. The following values were computed from the NAD 83(1991) position.
 JV5496
 JV5496;                    North         East     Units Scale Factor Converg.
 JV5496;SPC MD       -   180,180.943   433,296.533   MT  0.99997582   +0 14 32.1
 JV5496;SPC MD       -   591,143.64  1,421,573.71   sFT  0.99997582   +0 14 32.1
 JV5496;UTM  18      - 4,350,111.016   360,804.112   MT  0.99983857   -1 01 20.0
 JV5496
 JV5496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6080450111(NAD 83)
 JV5496
 JV5496                          SUPERSEDED SURVEY CONTROL
 JV5496
 JV5496  NAD 83(1986)-  39 17 21.08696(N)    076 36 50.56769(W) AD(       ) 3
 JV5496  NAD 27      -  39 17 20.70600(N)    076 36 51.68000(W) AD(       ) 3
 JV5496
 JV5496.Superseded values are not recommended for survey control.
 JV5496
 JV5496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5496.See file dsdata.pdf to determine how the superseded data were derived.
 JV5496
 JV5496_MARKER: 42 = RADIO/TV MAST
 JV5496_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5496+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5496
 JV5496  HISTORY     - Date     Condition        Report By
 JV5496  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5496  HISTORY     - 1975     GOOD             NGS
 JV5496  HISTORY     - 1981     GOOD             NGS
 JV5496  HISTORY     - 20060621 GOOD             GEOCAC
 JV5496  HISTORY     - 20110315 GOOD             GEOCAC
 JV5496
 JV5496                          STATION DESCRIPTION
 JV5496
 JV5496'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5496'STATION IS LOCATED IN DOWNTOWN BALTIMORE, ON THE TOP OF THE
 JV5496'HIGHEST PART OF THE MATHIESON BUILDING.  IT IS A TELEVISION
 JV5496'MAST ABOUT 60 FT. HIGH WITH A RED BLINKING LIGHT AT THE TOP,
 JV5496'WHICH WAS THE POINT INTERSECTED.
 JV5496
 JV5496                          STATION RECOVERY (1975)
 JV5496
 JV5496'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5496'STATION WAS RECOVERED AS DESCRIBED.
 JV5496'
 JV5496'THE MAST IS NO LONGER USED BY THE STATION FOR BROADCASTING.
 JV5496'
 JV5496'THE BUILDING HAS THE TWO LETTERS MN AT THE TOP ON ALL FOUR SIDES.
 JV5496
 JV5496                          STATION RECOVERY (1981)
 JV5496
 JV5496'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981 (RGP)
 JV5496'RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5496'
 JV5496'THIS STATION WAS CALLED BALTIMORE WMAR CHANNEL 2 TV MAST IN THE 1970
 JV5496'DESCRIPTION FOR STATION SNOW 2.
 JV5496
 JV5496                          STATION RECOVERY (2006)
 JV5496
 JV5496'RECOVERY NOTE BY GEOCACHING 2006 (BRW)
 JV5496'RECOVERED IN GOOD CONDITION.
 JV5496
 JV5496                          STATION RECOVERY (2011)
 JV5496
 JV5496'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5496'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5616 ***********************************************************************
 JV5616  DESIGNATION -  BALTIMORE TV STATION WJZ MAST
 JV5616  PID         -  JV5616
 JV5616  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5616  COUNTRY     -  US
 JV5616  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5616
 JV5616                         *CURRENT SURVEY CONTROL
 JV5616  ______________________________________________________________________
 JV5616* NAD 83(1991) POSITION- 39 20 04.67480(N) 076 39 06.01933(W)   ADJUSTED
 JV5616  ______________________________________________________________________
 JV5616  GEOID HEIGHT    -        -32.526 (meters)                     GEOID18
 JV5616  LAPLACE CORR    -         -6.55  (seconds)                    DEFLEC18
 JV5616  HORZ ORDER      -  THIRD
 JV5616
 JV5616.The horizontal coordinates were established by classical geodetic methods
 JV5616.and adjusted by the National Geodetic Survey in January 1992.
 JV5616
 JV5616.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5616.GEOID18 height accuracy estimate available here.
 JV5616
 JV5616.Click photographs - Photos may exist for this station.
 JV5616
 JV5616.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5616
 JV5616. The following values were computed from the NAD 83(1991) position.
 JV5616
 JV5616;                    North         East     Units Scale Factor Converg.
 JV5616;SPC MD       -   185,212.561   430,031.134   MT  0.99998185   +0 13 07.0
 JV5616;SPC MD       -   607,651.54  1,410,860.48   sFT  0.99998185   +0 13 07.0
 JV5616;UTM  18      - 4,355,212.814   357,651.023   MT  0.99984949   -1 02 49.5
 JV5616
 JV5616_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5765155212(NAD 83)
 JV5616
 JV5616                          SUPERSEDED SURVEY CONTROL
 JV5616
 JV5616  NAD 83(1986)-  39 20 04.67136(N)    076 39 06.02719(W) AD(       ) 3
 JV5616  NAD 27      -  39 20 04.28400(N)    076 39 07.13400(W) AD(       ) 3
 JV5616
 JV5616.Superseded values are not recommended for survey control.
 JV5616
 JV5616.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5616.See file dsdata.pdf to determine how the superseded data were derived.
 JV5616
 JV5616_MARKER: 42 = RADIO/TV MAST
 JV5616
 JV5616  HISTORY     - Date     Condition        Report By
 JV5616  HISTORY     - 1959     FIRST OBSERVED   CGS
 JV5616
 JV5616                          STATION DESCRIPTION
 JV5616
 JV5616'NO DESCRIPTIVE TEXT AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5674 ***********************************************************************
 JV5674  DESIGNATION -  BALTIMORE US ALCOHOL CO STACK
 JV5674  PID         -  JV5674
 JV5674  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5674  COUNTRY     -  US
 JV5674  USGS QUAD   -  CURTIS BAY (2016)
 JV5674
 JV5674                         *CURRENT SURVEY CONTROL
 JV5674  ______________________________________________________________________
 JV5674* NAD 83(1991) POSITION- 39 13 09.62111(N) 076 34 59.90872(W)   ADJUSTED
 JV5674  ______________________________________________________________________
 JV5674  GEOID HEIGHT    -        -32.890 (meters)                     GEOID18
 JV5674  LAPLACE CORR    -         -4.62  (seconds)                    DEFLEC18
 JV5674  HORZ ORDER      -  THIRD
 JV5674
 JV5674.The horizontal coordinates were established by classical geodetic methods
 JV5674.and adjusted by the National Geodetic Survey in January 1992.
 JV5674
 JV5674.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5674.GEOID18 height accuracy estimate available here.
 JV5674
 JV5674.Click photographs - Photos may exist for this station.
 JV5674
 JV5674.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5674
 JV5674. The following values were computed from the NAD 83(1991) position.
 JV5674
 JV5674;                    North         East     Units Scale Factor Converg.
 JV5674;SPC MD       -   172,437.834   435,983.536   MT  0.99996778   +0 15 41.5
 JV5674;SPC MD       -   565,739.79  1,430,389.32   sFT  0.99996778   +0 15 41.5
 JV5674;UTM  18      - 4,342,311.606   363,319.359   MT  0.99983003   -1 00 04.6
 JV5674
 JV5674_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6331942311(NAD 83)
 JV5674
 JV5674                          SUPERSEDED SURVEY CONTROL
 JV5674
 JV5674  NAD 83(1986)-  39 13 09.61747(N)    076 34 59.91804(W) AD(       ) 3
 JV5674  NAD 27      -  39 13 09.23600(N)    076 35 01.03900(W) AD(       ) 3
 JV5674
 JV5674.Superseded values are not recommended for survey control.
 JV5674
 JV5674.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5674.See file dsdata.pdf to determine how the superseded data were derived.
 JV5674
 JV5674_MARKER: 63 = STACK
 JV5674
 JV5674  HISTORY     - Date     Condition        Report By
 JV5674  HISTORY     - 1933     FIRST OBSERVED   CGS
 JV5674  HISTORY     - 1975     GOOD             NGS
 JV5674  HISTORY     - 1981     GOOD             NGS
 JV5674  HISTORY     - 1984     GOOD             USPSQD
 JV5674
 JV5674                          STATION DESCRIPTION
 JV5674
 JV5674'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5674'STATION RECOVERED IN GOOD CONDITION.  STATION IS A BROWNISH
 JV5674'BRICK STACK WHICH HAS A YELLOW BRICK TOP.  STACK IS LOCATED ON THE
 JV5674'PROPERTY OF GAMBLE INDUSTRIES AT CURTIS BAY.
 JV5674
 JV5674                          STATION RECOVERY (1981)
 JV5674
 JV5674'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981 (RGP)
 JV5674'RECOVERED IN GOOD CONDITION.
 JV5674
 JV5674                          STATION RECOVERY (1984)
 JV5674
 JV5674'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5674'STATION IN GOOD CONDITION, STATION STILL SAME COLOR AS DESCRIBED AND
 JV5674'LOCATED ON PRIVATE PROPERTY, STACK OBSERVED FROM PUBLIC ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5623 ***********************************************************************
 JV5623  DESIGNATION -  BALTIMORE WESLEY MEM METH CH
 JV5623  PID         -  JV5623
 JV5623  STATE/COUNTY-  MD/BALTIMORE
 JV5623  COUNTRY     -  US
 JV5623  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5623
 JV5623                         *CURRENT SURVEY CONTROL
 JV5623  ______________________________________________________________________
 JV5623* NAD 83(1991) POSITION- 39 17 25.50168(N) 076 43 33.43574(W)   ADJUSTED
 JV5623  ______________________________________________________________________
 JV5623  GEOID HEIGHT    -        -32.354 (meters)                     GEOID18
 JV5623  LAPLACE CORR    -         -5.93  (seconds)                    DEFLEC18
 JV5623  HORZ ORDER      -  THIRD
 JV5623
 JV5623.The horizontal coordinates were established by classical geodetic methods
 JV5623.and adjusted by the National Geodetic Survey in January 1992.
 JV5623
 JV5623.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5623.GEOID18 height accuracy estimate available here.
 JV5623
 JV5623.Click photographs - Photos may exist for this station.
 JV5623
 JV5623.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5623
 JV5623. The following values were computed from the NAD 83(1991) position.
 JV5623
 JV5623;                    North         East     Units Scale Factor Converg.
 JV5623;SPC MD       -   180,282.070   423,641.632   MT  0.99997598   +0 10 19.2
 JV5623;SPC MD       -   591,475.42  1,389,897.59   sFT  0.99997598   +0 10 19.2
 JV5623;UTM  18      - 4,350,425.197   351,154.958   MT  0.99987279   -1 05 35.4
 JV5623
 JV5623_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5115450425(NAD 83)
 JV5623
 JV5623                          SUPERSEDED SURVEY CONTROL
 JV5623
 JV5623  NAD 83(1986)-  39 17 25.49869(N)    076 43 33.44411(W) AD(       ) 3
 JV5623  NAD 27      -  39 17 25.11600(N)    076 43 34.54600(W) AD(       ) 3
 JV5623
 JV5623.Superseded values are not recommended for survey control.
 JV5623
 JV5623.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5623.See file dsdata.pdf to determine how the superseded data were derived.
 JV5623
 JV5623_MARKER: 90 = CHURCH SPIRE
 JV5623
 JV5623  HISTORY     - Date     Condition        Report By
 JV5623  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5623  HISTORY     - 19940801 GOOD             USPSQD
 JV5623  HISTORY     - 20030921 GOOD             USPSQD
 JV5623  HISTORY     - 20041003 GOOD             USPSQD
 JV5623
 JV5623                          STATION DESCRIPTION
 JV5623
 JV5623'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5623'THE STATION IS LOCATED ABOUT 5-1/2 MILES WEST OF THE CENTER OF
 JV5623'BALTIMORE AND ABOUT 1-1/2 MILES NORTH OF CATONSVILLE.  IT IS ON
 JV5623'TOP OF A RED BRICK CHURCH WITH A BLACK SPIRE AND IS APPROXIMATELY
 JV5623'100 FEET HIGH.  THE POINT INTERSECTED WAS THE CROSS ON TOP OF
 JV5623'THE SPIRE.
 JV5623'
 JV5623'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40
 JV5623'AND ROLLING ROAD, GO EAST ON U.S. HIGHWAY 40 FOR 0.7 MILE TO
 JV5623'W.I.T.H. RADIO TOWER ON RIGHT, CONTINUE EAST ON U.S. HIGHWAY 40
 JV5623'FOR 0.8 MILE TO CROSSROADS, TURN LEFT ON JOHNYCAKE ROAD FOR 0.05
 JV5623'MILE TO THE STATION ON RIGHT AS DESCRIBED.
 JV5623
 JV5623                          STATION RECOVERY (1994)
 JV5623
 JV5623'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5623'RECOVERED IN GOOD CONDITION.
 JV5623
 JV5623                          STATION RECOVERY (2003)
 JV5623
 JV5623'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5623'RECOVERED IN GOOD CONDITION.  NOTE-- THE SPIRE IS NOW A LIGHT GRAY
 JV5623'COLOR.
 JV5623
 JV5623                          STATION RECOVERY (2004)
 JV5623
 JV5623'RECOVERY NOTE BY US POWER SQUADRON 2004 (CLB)
 JV5623'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5614 ***********************************************************************
 JV5614  DESIGNATION -  BALTIMORE WFBR W RADIO MAST
 JV5614  PID         -  JV5614
 JV5614  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5614  COUNTRY     -  US
 JV5614  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5614
 JV5614                         *CURRENT SURVEY CONTROL
 JV5614  ______________________________________________________________________
 JV5614* NAD 83(1991) POSITION- 39 15 25.30112(N) 076 37 35.51153(W)   ADJUSTED
 JV5614  ______________________________________________________________________
 JV5614  GEOID HEIGHT    -        -32.740 (meters)                     GEOID18
 JV5614  LAPLACE CORR    -         -5.65  (seconds)                    DEFLEC18
 JV5614  HORZ ORDER      -  THIRD
 JV5614
 JV5614.The horizontal coordinates were established by classical geodetic methods
 JV5614.and adjusted by the National Geodetic Survey in January 1992.
 JV5614
 JV5614.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5614.GEOID18 height accuracy estimate available here.
 JV5614
 JV5614.Click photographs - Photos may exist for this station.
 JV5614
 JV5614.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5614
 JV5614. The following values were computed from the NAD 83(1991) position.
 JV5614
 JV5614;                    North         East     Units Scale Factor Converg.
 JV5614;SPC MD       -   176,605.741   432,233.908   MT  0.99997193   +0 14 03.8
 JV5614;SPC MD       -   579,414.00  1,418,087.41   sFT  0.99997193   +0 14 03.8
 JV5614;UTM  18      - 4,346,560.601   359,663.022   MT  0.99984249   -1 01 46.0
 JV5614
 JV5614_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5966346560(NAD 83)
 JV5614
 JV5614                          SUPERSEDED SURVEY CONTROL
 JV5614
 JV5614  NAD 83(1986)-  39 15 25.29774(N)    076 37 35.52042(W) AD(       ) 3
 JV5614  NAD 27      -  39 15 24.91000(N)    076 37 36.63600(W) AD(       ) 3
 JV5614
 JV5614.Superseded values are not recommended for survey control.
 JV5614
 JV5614.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5614.See file dsdata.pdf to determine how the superseded data were derived.
 JV5614
 JV5614_MARKER: 42 = RADIO/TV MAST
 JV5614
 JV5614  HISTORY     - Date     Condition        Report By
 JV5614  HISTORY     - 1940     FIRST OBSERVED   CGS
 JV5614  HISTORY     - 1975     GOOD             NGS
 JV5614  HISTORY     - 1981     GOOD             NGS
 JV5614
 JV5614                          STATION DESCRIPTION
 JV5614
 JV5614'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5614'STATION IS THE MOST WESTERLY ONE OF THE TWO MASTS.  THE MASTS ARE
 JV5614'LOCATED ON THE S SIDE OF THE MIDDLE OF PATAPSCO RIVER, 0.2 MILE
 JV5614'W OF STATE HIGHWAY NO.2.
 JV5614
 JV5614                          STATION RECOVERY (1975)
 JV5614
 JV5614'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5614'STATION WAS RECOVERED AS DESCRIBED.
 JV5614
 JV5614                          STATION RECOVERY (1981)
 JV5614
 JV5614'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981 (RGP)
 JV5614'THE STATION IS LOCATED ABOUT 9 AIRLINE MILES SOUTH-SOUTHEAST OF
 JV5614'BALTIMORE, 6 MILES NORTH-NORTHEAST OF GLEN BURNIE AND JUST NORTH OF
 JV5614'THE COAST GUARD STATION.
 JV5614'
 JV5614'TO REACH FROM THE INTERSECTION OF QUARANTINE ROAD AND INTERSTATE
 JV5614'HIGHWAY 695 WHICH IS JUST NORTHEAST OF GLEN BURNIE, GO SOUTH ON
 JV5614'QUARANTINE ROAD FOR 0.15 MILE TO A T-INTERSECTION.  TURN RIGHT AND
 JV5614'GO WEST ON PENNINGTON AVENUE FOR 0.85 MILE TO THE STATION ON
 JV5614'THE LEFT.
 JV5614'
 JV5614'THE STATION IS THE TOP AND CENTER OF THE MAST WHICH IS ABOUT 250
 JV5614'FEET HIGH AND PAINTED RED AND WHITE IN COLOR.  IT IS OWNED BY THE
 JV5614'BALTIMORE RADIO STATION WMAR BUT HAS CALL LETTERS OF WFBR.  THIS
 JV5614'STATION IS CALLED BALTIMORE WMAR CHANNEL 2 TV MAST IN THE DESCRIPTION
 JV5614'FOR STATION SNOW 2 1970.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6566 ***********************************************************************
 JV6566  DESIGNATION -  BALTO 2
 JV6566  PID         -  JV6566
 JV6566  STATE/COUNTY-  MD/BALTIMORE
 JV6566  COUNTRY     -  US
 JV6566  USGS QUAD   -  TOWSON (2016)
 JV6566
 JV6566                         *CURRENT SURVEY CONTROL
 JV6566  ______________________________________________________________________
 JV6566* NAD 83(1991) POSITION- 39 24 43.03871(N) 076 36 00.41120(W)   ADJUSTED
 JV6566* NAVD 88 ORTHO HEIGHT -   123.    (meters)      404.    (feet) SCALED
 JV6566  ______________________________________________________________________
 JV6566  GEOID HEIGHT    -        -32.568 (meters)                     GEOID18
 JV6566  LAPLACE CORR    -         -4.48  (seconds)                    DEFLEC18
 JV6566  HORZ ORDER      -  THIRD
 JV6566
 JV6566.The horizontal coordinates were established by classical geodetic methods
 JV6566.and adjusted by the National Geodetic Survey in January 1992.
 JV6566
 JV6566.The orthometric height was scaled from a topographic map.
 JV6566
 JV6566.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6566.GEOID18 height accuracy estimate available here.
 JV6566
 JV6566.Click photographs - Photos may exist for this station.
 JV6566
 JV6566.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6566
 JV6566. The following values were computed from the NAD 83(1991) position.
 JV6566
 JV6566;                    North         East     Units Scale Factor Converg.
 JV6566;SPC MD       -   193,815.224   434,438.566   MT  0.99999357   +0 15 03.5
 JV6566;SPC MD       -   635,875.45  1,425,320.53   sFT  0.99999357   +0 15 03.5
 JV6566;UTM  18      - 4,363,714.726   362,246.833   MT  0.99983364   -1 00 57.8
 JV6566
 JV6566!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6566!SPC MD       -   0.99998587  x   0.99999357  =   0.99997944
 JV6566!UTM  18      -   0.99998587  x   0.99983364  =   0.99981951
 JV6566
 JV6566_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6224663714(NAD 83)
 JV6566
 JV6566|---------------------------------------------------------------------|
 JV6566| PID    Reference Object                     Distance      Geod. Az  |
 JV6566|                                                           dddmmss.s |
 JV6566| JV5453 TOWSON METHODIST CHURCH SPIRE       302.858 METERS 03906     |
 JV6566| JV6640 BALTO RM 2                           87.030 METERS 34536     |
 JV6566| JV5431 BALTO                                83.938 METERS 35429     |
 JV6566|---------------------------------------------------------------------|
 JV6566
 JV6566                          SUPERSEDED SURVEY CONTROL
 JV6566
 JV6566  NAD 83(1986)-  39 24 43.03453(N)    076 36 00.41867(W) AD(       ) 3
 JV6566
 JV6566.Superseded values are not recommended for survey control.
 JV6566
 JV6566.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6566.See file dsdata.pdf to determine how the superseded data were derived.
 JV6566
 JV6566_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6566_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6566_STAMPING: BALTO 2 1984
 JV6566_MARK LOGO: NGS
 JV6566_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6566_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6566+STABILITY: SURFACE MOTION
 JV6566
 JV6566  HISTORY     - Date     Condition        Report By
 JV6566  HISTORY     - 1984     MONUMENTED       NGS
 JV6566
 JV6566                          STATION DESCRIPTION
 JV6566
 JV6566'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6566'THE STATION IS LOCATED ABOUT 12.85 KM (8.00 MI) NORTH OF THE
 JV6566'APPROXIMATE CENTER OF BALTIMORE, 4 KM (2.50 MI) SOUTHEAST OF TIMONIUM,
 JV6566'1.2 KM (0.75 MI) NORTH OF TOWSON AND IN A GRASS COVERED ISLAND AT THE
 JV6566'INTERSECTION OF INTERSTATE HIGHWAY 695 AND STATE HIGHWAY 146 (DULANEY
 JV6566'VALLEY ROAD).  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV6566'THE LOCATION OF THIS STATION ALSO SERVES AS A TO REACH.
 JV6566'THE STATION DISK IS SET IN THE TOP OF A 0.25 M (0.8 FT) ROUND CONCRETE
 JV6566'MONUMENT WHICH PROJECTS 0.05 M (0.2 FT) ABOVE THE SURFACE OF THE
 JV6566'GROUND.  THE SUB-SURFACE DISK IS ABOUT 1.0 M (3.3 FT) BELOW THE TOP OF
 JV6566'THE SURFACE MARKER.  THEY ARE 17.97 M (59.0 FT) EAST OF THE CENTER OF
 JV6566'THE NORTH BOUND LANE OF STATE HIGHWAY 146 (DULANEY VALLEY ROAD),
 JV6566'116.97 M (383.8 FT) SOUTH OF THE CENTER OF THE EAST BOUND LANE OF
 JV6566'INTERSTATE HIGHWAY 695, 29.15 M (95.6 FT) SOUTHWEST OF THE CENTER OF A
 JV6566'EXIT ROAD FROM EAST BOUND INTERSTATE HIGHWAY 695 ONTO NORTH BOUND
 JV6566'STATE HIGHWAY 146, 0.5 M (1.6 FT) SOUTHWEST OF A CARSONITE WITNESS
 JV6566'POST AND 36.8 M (120.7 FT) NORTH OF THE EAST LEG OF A HIGHWAY SIGN
 JV6566'NEAR REFERENCE MARK FOUR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2471 ***********************************************************************
 JV2471  DESIGNATION -  BALTO NAT PIKE 2 2
 JV2471  PID         -  JV2471
 JV2471  STATE/COUNTY-  MD/HOWARD
 JV2471  COUNTRY     -  US
 JV2471  USGS QUAD   -  WOODBINE (2016)
 JV2471
 JV2471                         *CURRENT SURVEY CONTROL
 JV2471  ______________________________________________________________________
 JV2471* NAD 83(1991) POSITION- 39 19 18.75074(N) 077 00 07.04587(W)   ADJUSTED
 JV2471* NAVD 88 ORTHO HEIGHT -   189.68  (meters)      622.3   (feet) RESET
 JV2471  ______________________________________________________________________
 JV2471  GEOID HEIGHT    -        -31.895 (meters)                     GEOID18
 JV2471  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 JV2471  HORZ ORDER      -  SECOND
 JV2471  VERT ORDER      -  THIRD
 JV2471
 JV2471.The horizontal coordinates were established by classical geodetic methods
 JV2471.and adjusted by the National Geodetic Survey in January 1992.
 JV2471
 JV2471.The orthometric height was computed from unverified reset data.
 JV2471
 JV2471.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2471.GEOID18 height accuracy estimate available here.
 JV2471
 JV2471.Click photographs - Photos may exist for this station.
 JV2471
 JV2471.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2471
 JV2471. The following values were computed from the NAD 83(1991) position.
 JV2471
 JV2471;                    North         East     Units Scale Factor Converg.
 JV2471;SPC MD       -   183,739.026   399,831.230   MT  0.99998010   -0 00 04.4
 JV2471;SPC MD       -   602,817.12  1,311,779.63   sFT  0.99998010   -0 00 04.4
 JV2471;UTM  18      - 4,354,407.307   327,428.184   MT  0.99996669   -1 16 08.1
 JV2471
 JV2471!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2471!SPC MD       -   0.99997525  x   0.99998010  =   0.99995535
 JV2471!UTM  18      -   0.99997525  x   0.99996669  =   0.99994194
 JV2471
 JV2471:                Primary Azimuth Mark                     Grid Az
 JV2471:SPC MD       -  BALTO NAT PIKE 2 2 AZ MK                 096 02 51.1
 JV2471:UTM  18      -  BALTO NAT PIKE 2 2 AZ MK                 097 18 54.8
 JV2471
 JV2471_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2742854407(NAD 83)
 JV2471
 JV2471|---------------------------------------------------------------------|
 JV2471| PID    Reference Object                     Distance      Geod. Az  |
 JV2471|                                                           dddmmss.s |
 JV2471| JV2468 BALTO NAT PIKE 2                     12.624 METERS 02013     |
 JV2471| JV2470 BALTO NAT PIKE 2 RM 1                              06151     |
 JV2471| CK6559 BALTO NAT PIKE 2 2 AZ MK                           0960246.7 |
 JV2471| JV2472 BALTO NAT PIKE 2 2 RM 3               5.180 METERS 19925     |
 JV2471| JV2473 BALTO NAT PIKE 2 2 RM 4               9.129 METERS 26321     |
 JV2471|---------------------------------------------------------------------|
 JV2471
 JV2471                          SUPERSEDED SURVEY CONTROL
 JV2471
 JV2471  NAD 83(1986)-  39 19 18.74947(N)    077 00 07.05428(W) AD(       ) 2
 JV2471  NAD 27      -  39 19 18.37186(N)    077 00 08.12784(W) AD(       ) 2
 JV2471  NGVD 29 (??/??/??)  189.89   (m)          623.0    (f) RESET       3  
 JV2471  NGVD 29             189.86   (m)          622.9    (f) LEVELING    3  
 JV2471
 JV2471.Superseded values are not recommended for survey control.
 JV2471
 JV2471.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2471.See file dsdata.pdf to determine how the superseded data were derived.
 JV2471
 JV2471_MARKER: DS = TRIANGULATION STATION DISK
 JV2471_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2471_STAMPING: BALTO NAT PIKE NO 2-2 1971
 JV2471_MARK LOGO: CGS
 JV2471_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2471+STABILITY: SURFACE MOTION
 JV2471
 JV2471  HISTORY     - Date     Condition        Report By
 JV2471  HISTORY     - 1971     MONUMENTED       NGS
 JV2471  HISTORY     - 1971     GOOD             NGS
 JV2471  HISTORY     - 1975     GOOD             NGS
 JV2471
 JV2471                          STATION DESCRIPTION
 JV2471
 JV2471'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV2471'STATION IS LOCATED NEAR THE EAST END OF A LOW CUT ENBANKMENT ON THE
 JV2471'SOUTH SIDE OF INTERSTATE HIGHWAY I-70N, ABOUT 15.0 MILES WEST OF
 JV2471'CATONSVILLE, 4.0 MILES SOUTHWEST OF SYKSVILLE, 0.85 MILE
 JV2471'EAST-NORTHEAST OF COOKSVILLE, AND 0.85 MILE EAST OF INTERCHANGE AT
 JV2471'THE JUNCTION OF STATE HIGHWAY 97 AND INTERSTATE HIGHWAY I-70N.
 JV2471'IT IS 30 FEET EAST OF A FENCE CORNER, 2.0 FEET NORTH OF THE SOUTH
 JV2471'RIGHT-OF-WAY LINE, AND 1.5 FEET WEST OF A METAL WITNESS POST
 JV2471'AND SIGN.  IT IS ABOUT FLUSH WITH THE GROUND SURFACE AND THE
 JV2471'DISK IS STAMPED, BALTO NAT PIKE NO 2-2 1971.
 JV2471'
 JV2471'REFERENCE MARK NO. 3 IS SET FLUSH WITH THE GROUND, 29 FEET EAST OF
 JV2471'A WIRE FENCE, 17 FEET SOUTH OF A METAL WITNESS POST AND SIGN, AND
 JV2471'AT THE EAST EDGE OF A WOODED AREA.  THE DISK IS STAMPED, BALTO NAT
 JV2471'PIKE 2-2 NO 3 1971.
 JV2471'
 JV2471'REFERENCE MARK NO. 4 IS SET FLUSH WITH THE GROUND AT THE NORTH
 JV2471'EDGE OF WOODED AREA, 2.0 FEET SOUTH OF A FENCE CORNER AND 1.0 FOOT
 JV2471'EAST OF A WIRE FENCE.  THE DISK IS STAMPED, BALTO NAT PIKE 2-2 NO 4
 JV2471'1971.
 JV2471'
 JV2471'AZIMUTH MARK IS SET IN THE TOP OF A ROUND CONCRETE MONUMENT THAT
 JV2471'PROJECTS ABOUT 2-INCHES.  IT IS ON THE SOUTH SIDE OF INTERSTATE
 JV2471'HIGHWAY NO. I-70N, 4.0 FEET NORTHEAST OF A FENCE CORNER, 2.0 FEET
 JV2471'NORTH OF THE SURVEYED RIGHT-OF-WAY LINE, AND 1.5 FEET SOUTH OF A
 JV2471'METAL WITNESS SIGN AND POST.  TO REACH FROM THE STATION GO EAST
 JV2471'ALONG SOUTH EDGE OF HIGHWAY RIGHT-OF-WAY FOR 0.25 MILE TO THE
 JV2471'MARK AS DESCRIBED.
 JV2471'
 JV2471'TO REACH FROM THE JUNCTION OF STATE HIGHWAY 97 AND I-70N AT A LARGE
 JV2471'INTERCHANGE JUST NORTH OF COOKSVILLE.  GO EASTERLY ON HIGHWAY I-70N
 JV2471'FOR 0.85 MILE TO THE STATION ON THE RIGHT NEAR THE NORTHEAST CORNER
 JV2471'OF A WOODED AREA.
 JV2471
 JV2471                          STATION RECOVERY (1971)
 JV2471
 JV2471'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV2471'0.8 MI NE FROM COOKSVILLE.
 JV2471'FROM THE INTERCHANGE AT JUNCTION OF STATE HIGHWAY 97 AND INTERSTATE
 JV2471'HIGHWAY I-70N, ABOUT 0.3 MILE NORTH OF COOKSVILLE, GO EASTERLY ON
 JV2471'HIGHWAY I-70N FOR 0.8 MILE TO EAST END OF A CUT AND STATION MARK
 JV2471'ON THE RIGHT AT CORNER OF A WOODS.  THE DISK IS SET IN THE TOP OF
 JV2471'A ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND, 30 FEET EAST OF A
 JV2471'FENCE CORNER 2.0 FEET NORTH OF THE SOUTH R/W SURVEYED LINE, 1.5
 JV2471'FEET WEST OF A METAL WITNESS POST AND SIGN.  IT IS ABOUT 13 FEET
 JV2471'ABOVE LEVEL OF HIGHWAY.
 JV2471
 JV2471                          STATION RECOVERY (1975)
 JV2471
 JV2471'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV2471'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JV2471'AS DESCRIBED IN THE 1971 DESCRIPTION.  THE DISTANCES AND DIRECTIONS
 JV2471'TO ALL MARKS WERE WITHIN CLOSE AGREEMENT WITH THE 1971
 JV2471'OBSERVATIONS.  THIS STATION WAS USED AS A TRAVERSE TIE BETWEEN
 JV2471'STATIONS ALONG THE BALTIMORE NATIONAL PIKE.
 JV2471'
 JV2471'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV2471'1-1/4 MILES EAST OF COOKSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2472 ***********************************************************************
 JV2472  DESIGNATION -  BALTO NAT PIKE 2 2 RM 3
 JV2472  PID         -  JV2472
 JV2472  STATE/COUNTY-  MD/HOWARD
 JV2472  COUNTRY     -  US
 JV2472  USGS QUAD   -  WOODBINE (2016)
 JV2472
 JV2472                         *CURRENT SURVEY CONTROL
 JV2472  ______________________________________________________________________
 JV2472* NAD 83(1986) POSITION- 39 19 18.59   (N) 077 00 07.12   (W)   HD_HELD1
 JV2472* NAVD 88 ORTHO HEIGHT -   189.56  (meters)      621.9   (feet) RESET
 JV2472  ______________________________________________________________________
 JV2472  GEOID HEIGHT    -        -31.895 (meters)                     GEOID18
 JV2472  VERT ORDER      -  THIRD
 JV2472
 JV2472.The horizontal coordinates were determined by differentially corrected
 JV2472.hand held GPS observations or other comparable positioning techniques
 JV2472.and have an estimated accuracy of +/- 3 meters.
 JV2472
 JV2472.The orthometric height was computed from unverified reset data.
 JV2472
 JV2472.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2472.GEOID18 height accuracy estimate available here.
 JV2472
 JV2472.Click photographs - Photos may exist for this station.
 JV2472
 JV2472;                    North         East    Units  Estimated Accuracy
 JV2472;SPC MD       -   183,734.1     399,829.5     MT  (+/- 3 meters HH1 GPS) 
 JV2472
 JV2472_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2742654402(NAD 83)
 JV2472
 JV2472                          SUPERSEDED SURVEY CONTROL
 JV2472
 JV2472  NGVD 29 (??/??/??)  189.77   (m)          622.6    (f) RESET       3  
 JV2472
 JV2472.Superseded values are not recommended for survey control.
 JV2472
 JV2472.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2472.See file dsdata.pdf to determine how the superseded data were derived.
 JV2472
 JV2472_MARKER: DR = REFERENCE MARK DISK
 JV2472_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2472_STAMPING: BALTO NAT PIKE NO 2 2 1971 NO 3
 JV2472_MARK LOGO: CGS
 JV2472_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2472+STABILITY: SURFACE MOTION
 JV2472
 JV2472  HISTORY     - Date     Condition        Report By
 JV2472  HISTORY     - 1971     MONUMENTED       NGS
 JV2472  HISTORY     - 1972     GOOD             NGS
 JV2472
 JV2472                          STATION DESCRIPTION
 JV2472
 JV2472'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 JV2472'0.8 MI NE FROM COOKSVILLE.
 JV2472'FROM THE INTERCHANGE AT JUNCTION OF STATE HIGHWAY 97 AND INTERSTATE
 JV2472'HIGHWAY I-70N, ABOUT 0.3 MILE NORTH OF COOKSVILLE, GO EASTERLY ON
 JV2472'HIGHWAY I-70N FOR 0.8 MILE TO THE EAST END OF A CUT AND MARKER
 JV2472'ON THE RIGHT NEAR THE NORTHEAST CORNER OF A WOODED AREA.  IT IS
 JV2472'A ROUND CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND, 29 FEET
 JV2472'EAST OF A WIRE FENCE, 17 FEET SOUTH OF A METAL WITNESS POST AND
 JV2472'SIGN, AND AT THE EAST EDGE OF A WOODED AREA.  IT IS ABOUT 12
 JV2472'FEET ABOVE THE LEVEL OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2473 ***********************************************************************
 JV2473  DESIGNATION -  BALTO NAT PIKE 2 2 RM 4
 JV2473  PID         -  JV2473
 JV2473  STATE/COUNTY-  MD/HOWARD
 JV2473  COUNTRY     -  US
 JV2473  USGS QUAD   -  WOODBINE (2016)
 JV2473
 JV2473                         *CURRENT SURVEY CONTROL
 JV2473  ______________________________________________________________________
 JV2473* NAD 83(1986) POSITION- 39 19 18.72   (N) 077 00 07.42   (W)   HD_HELD1
 JV2473* NAVD 88 ORTHO HEIGHT -   190.11  (meters)      623.7   (feet) RESET
 JV2473  ______________________________________________________________________
 JV2473  GEOID HEIGHT    -        -31.895 (meters)                     GEOID18
 JV2473  VERT ORDER      -  THIRD
 JV2473
 JV2473.The horizontal coordinates were determined by differentially corrected
 JV2473.hand held GPS observations or other comparable positioning techniques
 JV2473.and have an estimated accuracy of +/- 3 meters.
 JV2473
 JV2473.The orthometric height was computed from unverified reset data.
 JV2473
 JV2473.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2473.GEOID18 height accuracy estimate available here.
 JV2473
 JV2473.Click photographs - Photos may exist for this station.
 JV2473
 JV2473;                    North         East    Units  Estimated Accuracy
 JV2473;SPC MD       -   183,738.1     399,822.3     MT  (+/- 3 meters HH1 GPS) 
 JV2473
 JV2473_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2741954406(NAD 83)
 JV2473
 JV2473                          SUPERSEDED SURVEY CONTROL
 JV2473
 JV2473  NGVD 29 (??/??/??)  190.32   (m)          624.4    (f) RESET       3  
 JV2473
 JV2473.Superseded values are not recommended for survey control.
 JV2473
 JV2473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2473.See file dsdata.pdf to determine how the superseded data were derived.
 JV2473
 JV2473_MARKER: DR = REFERENCE MARK DISK
 JV2473_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2473_STAMPING: BALTO NAT PIKE NO 2 2 1971 NO 4
 JV2473_MARK LOGO: CGS
 JV2473_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2473+STABILITY: SURFACE MOTION
 JV2473
 JV2473  HISTORY     - Date     Condition        Report By
 JV2473  HISTORY     - 1971     MONUMENTED       NGS
 JV2473  HISTORY     - 1972     GOOD             NGS
 JV2473
 JV2473                          STATION DESCRIPTION
 JV2473
 JV2473'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 JV2473'0.8 MI NE FROM COOKSVILLE.
 JV2473'FROM INTERCHANGE AT JUNCTION OF STATE HIGHWAY 97 AND INTERSTATE
 JV2473'HIGHWAY I-70N, ABOUT 0.3 MILE NORTH OF COOKSVILLE, GO EASTERLY ON
 JV2473'HIGHWAY I-70N FOR 0.8 MILE TO THE EAST END OF A CUT AND MARKER ON
 JV2473'THE RIGHT NEAR THE NORTHEAST CORNER OF A WOODED AREA.  IT IS A
 JV2473'ROUND CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND, 2.0 FEET
 JV2473'SOUTH OF A FENCE CORNER, 1.0 FOOT EAST OF A WIRE FENCE, AND ABOUT
 JV2473'13 FEET ABOVE THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0809 ***********************************************************************
 JV0809  DESIGNATION -  BALTO NAT PIKE 3
 JV0809  PID         -  JV0809
 JV0809  STATE/COUNTY-  MD/HOWARD
 JV0809  COUNTRY     -  US
 JV0809  USGS QUAD   -  SYKESVILLE (2016)
 JV0809
 JV0809                         *CURRENT SURVEY CONTROL
 JV0809  ______________________________________________________________________
 JV0809* NAD 83(1991) POSITION- 39 19 05.50071(N) 076 58 48.49595(W)   ADJUSTED
 JV0809* NAVD 88 ORTHO HEIGHT -   176.297 (meters)      578.40  (feet) ADJUSTED
 JV0809  ______________________________________________________________________
 JV0809  GEOID HEIGHT    -        -31.917 (meters)                     GEOID18
 JV0809  LAPLACE CORR    -         -2.25  (seconds)                    DEFLEC18
 JV0809  DYNAMIC HEIGHT  -        176.205 (meters)      578.10  (feet) COMP
 JV0809  MODELED GRAVITY -    980,098.8   (mgal)                       NAVD 88
 JV0809
 JV0809  HORZ ORDER      -  SECOND
 JV0809  VERT ORDER      -  SECOND    CLASS 0
 JV0809
 JV0809.The horizontal coordinates were established by classical geodetic methods
 JV0809.and adjusted by the National Geodetic Survey in January 1992.
 JV0809
 JV0809.The orthometric height was determined by differential leveling and
 JV0809.adjusted by the NATIONAL GEODETIC SURVEY
 JV0809.in June 1991.
 JV0809
 JV0809.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0809.GEOID18 height accuracy estimate available here.
 JV0809
 JV0809.Click photographs - Photos may exist for this station.
 JV0809
 JV0809.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0809
 JV0809.The dynamic height is computed by dividing the NAVD 88
 JV0809.geopotential number by the normal gravity value computed on the
 JV0809.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0809.degrees latitude (g = 980.6199 gals.).
 JV0809
 JV0809.The modeled gravity was interpolated from observed gravity values.
 JV0809
 JV0809. The following values were computed from the NAD 83(1991) position.
 JV0809
 JV0809;                    North         East     Units Scale Factor Converg.
 JV0809;SPC MD       -   183,330.597   401,712.826   MT  0.99997960   +0 00 44.9
 JV0809;SPC MD       -   601,477.13  1,317,952.83   sFT  0.99997960   +0 00 44.9
 JV0809;UTM  18      - 4,353,957.362   329,300.253   MT  0.99995878   -1 15 17.9
 JV0809
 JV0809!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0809!SPC MD       -   0.99997735  x   0.99997960  =   0.99995695
 JV0809!UTM  18      -   0.99997735  x   0.99995878  =   0.99993613
 JV0809
 JV0809:                Primary Azimuth Mark                     Grid Az
 JV0809:SPC MD       -  BALTO NAT PIKE 2                         282 37 09.7
 JV0809:UTM  18      -  BALTO NAT PIKE 2                         283 53 12.5
 JV0809
 JV0809_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2930053957(NAD 83)
 JV0809
 JV0809|---------------------------------------------------------------------|
 JV0809| PID    Reference Object                     Distance      Geod. Az  |
 JV0809|                                                           dddmmss.s |
 JV0809| JV0810 BALTO NAT PIKE 3 RM 1                91.740 METERS 10942     |
 JV0809| JV2468 BALTO NAT PIKE 2                    APPROX. 1.9 KM 2823754.6 |
 JV0809| JV0808 BALTO NAT PIKE 3 RM 2                10.330 METERS 29628     |
 JV0809|---------------------------------------------------------------------|
 JV0809
 JV0809                          SUPERSEDED SURVEY CONTROL
 JV0809
 JV0809  NAD 83(1986)-  39 19 05.50073(N)    076 58 48.50787(W) AD(       ) 2
 JV0809  NAD 27      -  39 19 05.12106(N)    076 58 49.57699(W) AD(       ) 2
 JV0809  NGVD 29             176.51   (m)          579.1    (f) LEVELING    3  
 JV0809  NGVD 29 (11/26/84)  176.511  (m)          579.10   (f) ADJUSTED    2 0
 JV0809
 JV0809.Superseded values are not recommended for survey control.
 JV0809
 JV0809.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0809.See file dsdata.pdf to determine how the superseded data were derived.
 JV0809
 JV0809_MARKER: DS = TRIANGULATION STATION DISK
 JV0809_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0809_STAMPING: BALTO NAT PIKE NO 3 1953
 JV0809_MARK LOGO: CGS
 JV0809_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0809+STABILITY: SURFACE MOTION
 JV0809
 JV0809  HISTORY     - Date     Condition        Report By
 JV0809  HISTORY     - 1958     MONUMENTED       MDBCSM
 JV0809  HISTORY     - 1958     GOOD             CGS
 JV0809  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV0809
 JV0809                          STATION DESCRIPTION
 JV0809
 JV0809'DESCRIBED BY MD BUR SURV AND MAPS 1958 (JCE)
 JV0809'THE STATION IS LOCATED ON TOP OF A HIGH CUTBANK ON THE NORTH
 JV0809'SIDE OF U.S. HIGHWAY 40, ABOUT 11 MILES WEST OF ELLICOTT CITY
 JV0809'AND ABOUT 2 MILES EAST OF STATE HIGHWAY 97.  IT IS ABOUT 120 FEET
 JV0809'NORTH OF THE CENTER OF THE WEST BOUND LANE OF U.S. HIGHWAY 40,
 JV0809'3 FEET SOUTHWEST OF FENCE LINE AND 5 FEET SOUTHWEST OF A
 JV0809'TRIANGLE-BLAZED FENCE POST.
 JV0809'
 JV0809'THE MARK IS STANDARD MARYLAND BUREAU OF CONTROL SURVEY DISK AND
 JV0809'IS STAMPED BALTO. NAT. PKE NO 3 1953.
 JV0809'
 JV0809'R.M. NO. 1 ABOUT 118 FEET NORTH OF THE CENTER OF THE WEST BOUND
 JV0809'LANE OF U.S. HIGHWAY 40, 24 FEET EAST OF A TRIANGLE-BLAZED FENCE
 JV0809'POST AND 1 FOOT SOUTH OF FENCE LINE.  THE MARK IS SET FLUSH AND
 JV0809'THE DISK IS STAMPED BALTO. NAT. PIKE NO 3 NO 1 1958.
 JV0809'
 JV0809'R.M. NO. 2 IS 37 FEET WEST OF TRIANGLE-BLAZED FENCE POST AND
 JV0809'1 FOOT SOUTH OF FENCE LINE.  THE MARK IS SET FLUSH AND THE DISK
 JV0809'IS STAMPED BALTO. NAT. PIKE NO 3 NO 2 1958.
 JV0809'
 JV0809'NO AZIMUTH MARK WAS ESTABLISHED.  STATION BALTO. NAT. PIKE NO. 2
 JV0809'AND BALTO. NAT. PIKE NO. 4 ARE BOTH VISIBLE FROM THE GROUND AND
 JV0809'EITHER ONE COULD BE USED AS AZIMUTH.
 JV0809'
 JV0809'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV0809'STATE HIGHWAY 32, ABOUT 9 MILES WEST OF ELLICOTT CITY.  GO WEST
 JV0809'ON U.S. HIGHWAY 40 FOR 0.55 MILE TO A SURFACED CROSSROADS, CONTINUE
 JV0809'WEST ON U.S. HIGHWAY 40 FOR 1.0 MILE TO THE STATION ON TOP OF
 JV0809'HIGH CUTBANK ON THE RIGHT AS DESCRIBED.
 JV0809'
 JV0809'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV0809
 JV0809                          STATION RECOVERY (1958)
 JV0809
 JV0809'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV0809'2.4 MI NE FROM COOKSVILLE.
 JV0809'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0809'COOKSVILLE, THENCE 2.1 MILES EAST ALONG U.S. HIGHWAY 40, ON
 JV0809'THE TOP OF A HIGH CUT BANK, 120 FEET NORTH OF THE CENTER LINE
 JV0809'OF THE WEST BOUND LANE, 3 FEET SOUTHWEST OF A FENCE LINE, 5
 JV0809'FEET SOUTHWEST OF A BLAZED FENCE POST, ABOUT 150 FEET EAST OF
 JV0809'A WOODED AREA, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 JV0809'GROUND AND ABOUT 30 FEET ABOVE THE LEVEL OF THE HIGHWAY.
 JV0809
 JV0809                          STATION RECOVERY (1975)
 JV0809
 JV0809'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV0809'A SEARCH WAS MADE FOR THE STATION AND NO MARKS WERE FOUND.  IT
 JV0809'IS BELIEVED ALL MARKS WERE DESTROYED DURING THE CONSTRUCTION OF
 JV0809'A NEW REST AREA.  A TRAVERSE STATION BALTO NAT PIKE NO 4-2 1971
 JV0809'AZ 2 1975 WAS ESTABLISHED ABOUT 1/4 MILE WEST OF THE LOCATION
 JV0809'OF THIS POINT, SEE DESCRIPTION THEREOF.
 JV0809'
 JV0809'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV0809'2 MILES WEST OF SLACKS CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0808 ***********************************************************************
 JV0808  DESIGNATION -  BALTO NAT PIKE 3 RM 2
 JV0808  PID         -  JV0808
 JV0808  STATE/COUNTY-  MD/HOWARD
 JV0808  COUNTRY     -  US
 JV0808  USGS QUAD   -  SYKESVILLE (2016)
 JV0808
 JV0808                         *CURRENT SURVEY CONTROL
 JV0808  ______________________________________________________________________
 JV0808* NAD 83(1986) POSITION- 39 19 05.65   (N) 076 58 48.88   (W)   HD_HELD1
 JV0808* NAVD 88 ORTHO HEIGHT -   176.245 (meters)      578.23  (feet) ADJUSTED
 JV0808  ______________________________________________________________________
 JV0808  GEOID HEIGHT    -        -31.917 (meters)                     GEOID18
 JV0808  DYNAMIC HEIGHT  -        176.153 (meters)      577.93  (feet) COMP
 JV0808  MODELED GRAVITY -    980,098.9   (mgal)                       NAVD 88
 JV0808
 JV0808  VERT ORDER      -  SECOND    CLASS 0
 JV0808
 JV0808.The horizontal coordinates were determined by differentially corrected
 JV0808.hand held GPS observations or other comparable positioning techniques
 JV0808.and have an estimated accuracy of +/- 3 meters.
 JV0808
 JV0808.The orthometric height was determined by differential leveling and
 JV0808.adjusted by the NATIONAL GEODETIC SURVEY
 JV0808.in June 1991.
 JV0808
 JV0808.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0808.GEOID18 height accuracy estimate available here.
 JV0808
 JV0808.Click photographs - Photos may exist for this station.
 JV0808
 JV0808.The dynamic height is computed by dividing the NAVD 88
 JV0808.geopotential number by the normal gravity value computed on the
 JV0808.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0808.degrees latitude (g = 980.6199 gals.).
 JV0808
 JV0808.The modeled gravity was interpolated from observed gravity values.
 JV0808
 JV0808;                    North         East    Units  Estimated Accuracy
 JV0808;SPC MD       -   183,335.2     401,703.6     MT  (+/- 3 meters HH1 GPS) 
 JV0808
 JV0808_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2929153962(NAD 83)
 JV0808
 JV0808                          SUPERSEDED SURVEY CONTROL
 JV0808
 JV0808  NGVD 29 (11/26/84)  176.459  (m)          578.93   (f) ADJUSTED    2 0
 JV0808
 JV0808.Superseded values are not recommended for survey control.
 JV0808
 JV0808.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0808.See file dsdata.pdf to determine how the superseded data were derived.
 JV0808
 JV0808_MARKER: DR = REFERENCE MARK DISK
 JV0808_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0808_STAMPING: BALTO NAT PIKE NO 3 NO 2 1953
 JV0808_MARK LOGO: CGS
 JV0808_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0808+STABILITY: SURFACE MOTION
 JV0808
 JV0808  HISTORY     - Date     Condition        Report By
 JV0808  HISTORY     - 1953     MONUMENTED       CGS
 JV0808  HISTORY     - 1958     GOOD             CGS
 JV0808
 JV0808                          STATION DESCRIPTION
 JV0808
 JV0808'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0808'2.4 MI NE FROM COOKSVILLE.
 JV0808'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0808'COOKSVILLE, THENCE 2.1 MILES EAST ALONG U.S. HIGHWAY 40, ON
 JV0808'THE TOP OF A CUT, 33.9 FEET WEST OF THE STATION, 1 FOOT SOUTHWEST
 JV0808'OF A FENCE LINE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV0808'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0814 ***********************************************************************
 JV0814  DESIGNATION -  BALTO NAT PIKE 4 2
 JV0814  PID         -  JV0814
 JV0814  STATE/COUNTY-  MD/HOWARD
 JV0814  COUNTRY     -  US
 JV0814  USGS QUAD   -  SYKESVILLE (2016)
 JV0814
 JV0814                         *CURRENT SURVEY CONTROL
 JV0814  ______________________________________________________________________
 JV0814* NAD 83(1991) POSITION- 39 18 34.00710(N) 076 57 33.57479(W)   ADJUSTED
 JV0814* NAD 83(1991) ELLIP HT-   149.603 (meters)        (01/27/92)   ADJUSTED
 JV0814* NAVD 88 ORTHO HEIGHT -   181.76  (meters)      596.3   (feet) RESET
 JV0814  ______________________________________________________________________
 JV0814  GEOID HEIGHT    -        -31.944 (meters)                     GEOID18
 JV0814  NAD 83(1991) X  -  1,115,070.062 (meters)                     COMP
 JV0814  NAD 83(1991) Y  - -4,814,304.137 (meters)                     COMP
 JV0814  NAD 83(1991) Z  -  4,019,051.557 (meters)                     COMP
 JV0814  LAPLACE CORR    -         -2.54  (seconds)                    DEFLEC18
 JV0814  HORZ ORDER      -  SECOND
 JV0814  VERT ORDER      -  THIRD
 JV0814  ELLP ORDER      -  FOURTH    CLASS I
 JV0814
 JV0814.The horizontal coordinates were established by classical geodetic methods
 JV0814.and adjusted by the National Geodetic Survey in January 1992.
 JV0814
 JV0814.The orthometric height was computed from unverified reset data.
 JV0814
 JV0814.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0814.GEOID18 height accuracy estimate available here.
 JV0814
 JV0814.Click photographs - Photos may exist for this station.
 JV0814
 JV0814.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0814
 JV0814.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0814
 JV0814.The ellipsoidal height was determined by GPS observations
 JV0814.and is referenced to NAD 83.
 JV0814
 JV0814. The following values were computed from the NAD 83(1991) position.
 JV0814
 JV0814;                    North         East     Units Scale Factor Converg.
 JV0814;SPC MD       -   182,359.971   403,507.939   MT  0.99997843   +0 01 31.9
 JV0814;SPC MD       -   598,292.67  1,323,842.30   sFT  0.99997843   +0 01 31.9
 JV0814;UTM  18      - 4,352,947.297   331,073.418   MT  0.99995136   -1 14 29.6
 JV0814
 JV0814!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0814!SPC MD       -   0.99997653  x   0.99997843  =   0.99995496
 JV0814!UTM  18      -   0.99997653  x   0.99995136  =   0.99992789
 JV0814
 JV0814:                Primary Azimuth Mark                     Grid Az
 JV0814:SPC MD       -  BALTO NAT PIKE 4 2 AZ MK 2               296 52 34.3
 JV0814:UTM  18      -  BALTO NAT PIKE 4 2 AZ MK 2               298 08 35.8
 JV0814
 JV0814_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3107352947(NAD 83)
 JV0814
 JV0814|---------------------------------------------------------------------|
 JV0814| PID    Reference Object                     Distance      Geod. Az  |
 JV0814|                                                           dddmmss.s |
 JV0814| JV0815 BALTO NAT PIKE 4 2 RM 3               5.303 METERS 10601     |
 JV0814| JV6061 CLARKSVILLE TRANSC GAS PIPE TR      APPROX. 5.3 KM 1532626.5 |
 JV0814| JV6015 CLARKSVILLE ATT MICROWAVE           APPROX.10.1 KM 1873333.3 |
 JV0814| CA9939 BALTO NAT PIKE 4 2 RM 5               5.365 METERS 29457     |
 JV0814| JV0816 BALTO NAT PIKE 4 2 RM 4               5.362 METERS 29506     |
 JV0814| JV6065 BALTO NAT PIKE 4 2 AZ MK 2          APPROX. 2.7 KM 2965406.2 |
 JV0814|---------------------------------------------------------------------|
 JV0814
 JV0814                          SUPERSEDED SURVEY CONTROL
 JV0814
 JV0814  NAD 83(1986)-  39 18 34.00572(N)    076 57 33.58312(W) AD(       ) 2
 JV0814  NAD 27      -  39 18 33.62748(N)    076 57 34.65989(W) AD(       ) 2
 JV0814  NGVD 29 (??/??/??)  181.97   (m)          597.0    (f) RESET       3  
 JV0814  NGVD 29             181.97   (m)          597.0    (f) LEVELING    3  
 JV0814  NGVD 29             181.94   (m)          596.9    (f) LEVELING    3  
 JV0814
 JV0814.Superseded values are not recommended for survey control.
 JV0814
 JV0814.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0814.See file dsdata.pdf to determine how the superseded data were derived.
 JV0814
 JV0814_STAMPING: BALTO NAT PIKE NO 4-2 1971
 JV0814_MARK LOGO: CGS
 JV0814_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0814+SATELLITE: SATELLITE OBSERVATIONS - January 22, 1986
 JV0814
 JV0814  HISTORY     - Date     Condition        Report By
 JV0814  HISTORY     - 1971     MONUMENTED       NGS
 JV0814  HISTORY     - 1971     GOOD             NGS
 JV0814  HISTORY     - 1974     GOOD             NGS
 JV0814  HISTORY     - 1975     GOOD             NGS
 JV0814  HISTORY     - 19860122 GOOD
 JV0814  HISTORY     - 20170803 MARK NOT FOUND   NGS
 JV0814
 JV0814                          STATION DESCRIPTION
 JV0814
 JV0814'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV0814'STATION IS LOCATED ON RIGHT-OF-WAY PROPERTY OF INTERSTATE HIGHWAY
 JV0814'I-70N, ON THE TOP OF A CUT EMBANKMENT AND ON THE SOUTH SIDE OF THE
 JV0814'HIGHWAY.  IT IS ABOUT 12.0 MILES WEST-NORTHWEST OF CANTONSVILLE,
 JV0814'3.3 MILES EAST OF COOKSVILLE AND 0.3 MILE WEST OF THE INTERCHANGE
 JV0814'OF HIGHWAYS I-70N AND STATE HIGHWAY NO. 32.  IT IS LOCATED AT
 JV0814'THE NORTH EDGE OF AN OPEN FIELD, 280 FEET EAST OF THE EAST EDGE OF
 JV0814'A WOODED AREA, 172 FEET WEST OF A NORTH-SOUTH FENCELINE, 4.0
 JV0814'FEET SOUTH OF THE TOP OF OUT BANK, 3.0 FEET NORTH OF THE SURVEYED
 JV0814'RIGHT-OF-WAY LINE FOR SOUTH SIDE OF HIGHWAY, AND 2.0 FEET NORTH OF A
 JV0814'METAL WITNESS POST AND SIGN.  THE MARK IS SET ABOUT FLUSH WITH THE
 JV0814'SURFACE OF THE GROUND AND THE DISK IS STAMPED, BALTO NAT PIKE NO 4-2
 JV0814'1971.
 JV0814'
 JV0814'REFERENCE MARK NO. 3 IS SET AT SOUTH EDGE OF HIGHWAY RIGHT-OF-WAY,
 JV0814'17.5 FEET EAST OF A METAL WITNESS POST AND SIGN AND 3.0 FEET SOUTH
 JV0814'OF TOP OF OUT EMBANKMENT.  IT IS SET ABOUT FLUSH WITH THE GROUND
 JV0814'SURFACE AND THE DISK IS STAMPED, BALTO NAT PIKE NO 4-2 NO 3 1971.
 JV0814'
 JV0814'REFERENCE MARK NO. 3 IS SET AT SOUTH EDGE OF HIGHWAY RIGHT-OF-WAY,
 JV0814'17.5 FEET EAST OF A METAL WITNESS POST AND SIGN AND 3.0 FEET SOUTH
 JV0814'OF TOP OF OUT EMBANKMENT.  IT IS SET ABOUT FLUSH WITH THE GROUND
 JV0814'SURFACE AND THE DISK IS STAMPED, BALTO NAT PIKE NO 4-2 NO 3 1971.
 JV0814'
 JV0814'REFERENCE MARK NO. 4 IS NEAR THE SOUTH EDGE OF HIGHWAY RIGHT-OF-WAY,
 JV0814'17.5 FEET WEST-NORTHWEST OF A METAL WITNESS SIGN AND POST AND 3.0
 JV0814'FEET SOUTH OF THE TOP OF OUT BANK.  THE DISK IS STAMPED, BALTO NAT
 JV0814'PIKE NO 4-2 NO 4 1971, AND IS ABOUT FLUSH WITH GROUND SURFACE.
 JV0814'
 JV0814'BALTO NAT PIKE NO 5-2 1971 CAN BE USED FOR AZIMUTH MARK CONTROL.
 JV0814'
 JV0814'TO REACH FROM THE CROSSROAD IN THE VILLAGE OF COOKSVILLE.  GO NORTH
 JV0814'ON STATE HIGHWAY 97 FOR ABOUT 0.3 MILE, KEEP RIGHT AND GO EASTERLY
 JV0814'ON HIGHWAY I-70N FOR 2.95 MILES TO THE HOWARD COUNTY FAIRGROUNDS ON
 JV0814'THE RIGHT, CONTINUE EAST ON HIGHWAY FOR 0.35 MILE TO STATION ON
 JV0814'TOP OF OUT BANK ON RIGHT, JUST BEFORE REACHING EXIT TO STATE HIGHWAY
 JV0814'NO.  32.
 JV0814
 JV0814                          STATION RECOVERY (1971)
 JV0814
 JV0814'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0814'3.3 MI E FROM COOKSVILLE.
 JV0814'0.3 MILE NORTH ALONG STATE HIGHWAY NO. 97 FROM THE CROSSROAD
 JV0814'IN COOKSVILLE, THEN EAST ALONG INTERSTATE HIGHWAY I-70N FOR
 JV0814'1.3 MILES TO A HIGH CUT BANK ON THE RIGHT AND MARKER AT TOP OF
 JV0814'BANK ON SOUTH SIDE OF HIGHWAY, JUST BEFORE REACHING INTERCHANGE
 JV0814'AT EXIT TO STATE HIGHWAY NO. 32.  IT IS AT THE NORTH EDGE OF A
 JV0814'CULTIVATED FIELD, SET ON HIGHWAY R/W PROPERTY, 280 FEET EAST OF
 JV0814'THE EDGE OF A WOODS, 172 FEET WEST OF A NORTH-SOUTH FENCE LINE,
 JV0814'4.0 FEET SOUTH OF TOP OF CUT BANK, 3.0 FEET NORTH OF THE SURVEYED
 JV0814'SOUTH R/W BOUNDARY, AND 2.0 FEET NORTH OF A METAL WITNESS
 JV0814'POST AND SIGN.  THE DISK IS IN THE TOP OF A ROUND CONCRETE
 JV0814'MONUMENT THAT IS FLUSH WITH THE GROUND.
 JV0814
 JV0814                          STATION RECOVERY (1974)
 JV0814
 JV0814'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV0814'THE STATION MARK AND REFERENCE MARK 3 WERE RECOVERED AND FOUND IN
 JV0814'GOOD CONDITION.  REFERENCE MARK 4 WAS FOUND DESTROYED.  A NEW
 JV0814'REFERENCE MARK 5 WAS ESTABLISHED IN THE SAME CONCRETE POST AS
 JV0814'REFERENCE MARK 4 WAS IN.  THE DISTANCE AND DIRECTION TO REFERENCE
 JV0814'MARK 3 WERE WITHIN CLOSE AGREEMENT WITH THE 1971 OBSERVATIONS.
 JV0814'THE DIRECTION TO THE MICROWAVE TOWER WAS ALSO WITHIN CLOSE
 JV0814'AGREEMENT WITH THE 1971 OBSERVATION.
 JV0814'
 JV0814'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV0814'
 JV0814'THE STATION IS LOCATED ABOUT 12 MILES WEST-NORTHWEST OF CANTONSVILLE,
 JV0814'3 MILES EAST OF COOKSVILLE AND 1/4 MILE WEST OF THE INTERSECTION OF
 JV0814'INTERSTATE HIGHWAY 70N AND STATE HIGHWAY 32.  IT IS ATOP A CUTBANK
 JV0814'ON THE SOUTH SIDE OF INTERSTATE HIGHWAY 70N.
 JV0814'
 JV0814'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 70N AND STATE
 JV0814'HIGHWAY 32, GO WEST ON INTERSTATE HIGHWAY 70N FOR 0.3 MILE TO THE
 JV0814'STATION ON THE LEFT.
 JV0814'
 JV0814'THE STATION MARK IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 4-2
 JV0814'1971, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JV0814'FLUSH WITH THE SURFACE OF THE GROUND AND ABOUT 50 FEET HIGHER THAN
 JV0814'THE ROAD.  IT IS 4 FEET SOUTH OF THE EDGE OF THE OUT BANK AND 2 FEET
 JV0814'NORTH OF A WITNESS POST.
 JV0814'
 JV0814'REFERENCE MARK 3 IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 4-2 NO
 JV0814'3 1971, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JV0814'FLUSH WITH THE SURFACE.  IT IS 17 FEET EAST OF THE WITNESS POST AND
 JV0814'3 FEET SOUTH OF THE CUT BANK.
 JV0814'
 JV0814'REFERENCE MARK 5 IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 4-2
 JV0814'1971 NO 5 1974, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT
 JV0814'WHICH IS FLUSH WITH THE SURFACE.  IT IS 17 FEET WEST OF THE WITNESS
 JV0814'POST AND 3 FEET SOUTH OF THE CUT BANK.
 JV0814'
 JV0814'TRAVERSE STATION BALTO NAT PIKE NO 5-2 1971 MAY BE USED AS AN AZIMUTH
 JV0814'MARK FOR THIS STATION.  SEE DESCRIPTION THEREOF.
 JV0814'
 JV0814'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES EAST OF
 JV0814'COOKSVILLE.
 JV0814
 JV0814                          STATION RECOVERY (1975)
 JV0814
 JV0814'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV0814'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JV0814'AS STATED IN THE 1974 DESCRIPTION.  THE DISTANCES AND DIRECTIONS
 JV0814'WERE WITHIN CLOSE AGREEMENT WITH THE 1974 OBSERVATIONS.  A NEW
 JV0814'AZIMUTH MARK WAS ESTABLISHED AT THIS DATE.
 JV0814'
 JV0814'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV0814'
 JV0814'THE STATION IS LOCATED ABOUT 19-1/2 MILES WEST OF BALTIMORE, 3 MILES
 JV0814'EAST OF COOKSVILLE AND 1/2 MILE NORTH OF WEST FRIENDSHIP.  IT IS ON
 JV0814'THE SOUTH SIDE OF INTERSTATE HIGHWAY 70 N AND ON HIGHWAY
 JV0814'RIGHT-OF-WAY.
 JV0814'
 JV0814'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 70 N AND STATE
 JV0814'HIGHWAY 32, GO WESTERLY ON INTERSTATE HIGHWAY 70 N FOR 0.4 MILE TO A
 JV0814'OUTBANK ON THE LEFT AND THE STATION ON THE TOP OF THE BANK.
 JV0814'
 JV0814'THE STATION MARK IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 4-2
 JV0814'1971, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JV0814'FLUSH WITH THE SURFACE.  IT IS ABOUT 50 FEET HIGHER THAN THE ROAD,
 JV0814'6 FEET NORTH OF THE SOUTH RIGHT-OF-WAY FENCE, 4 FEET SOUTH OF THE
 JV0814'EDGE OF THE CUTBANK AND 2 FEET NORTH OF A WITNESS POST.
 JV0814'
 JV0814'REFERENCE MARK 3 IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 4-2 NO
 JV0814'3 1971, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JV0814'FLUSH WITH THE SURFACE.  IT IS 17 FEET EAST OF THE WITNESS POST, 6
 JV0814'FEET NORTH OF THE RIGHT-OF-WAY FENCE AND 3 FEET SOUTH OF THE EDGE
 JV0814'OF THE BANK.
 JV0814'
 JV0814'REFERENCE MARK 5 IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 4-2
 JV0814'1971 NO 5 1974, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT
 JV0814'WHICH IS 3 INCHES BELOW THE SURFACE.  IT IS 17 FEET WEST OF THE
 JV0814'WITNESS POST, 6 FEET NORTH OF THE RIGHT-OF-WAY FENCE AND 3 FEET
 JV0814'SOUTH OF THE EDGE OF THE BANK.
 JV0814'
 JV0814'THE AZIMUTH MARK IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 4-2
 JV0814'1971 AZ 2 1975, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT
 JV0814'WHICH PROJECTS 1-INCH.  IT IS 183 FEET WEST OF A LONE TREE, 80 FEET
 JV0814'NORTH OF THE CENTER OF THE WEST BOUND LANE OF INTERSTATE HIGHWAY
 JV0814'70 N, 11 FEET SOUTH OF THE NORTH RIGHT-OF-WAY FENCE AND 2.6 FEET
 JV0814'EAST OF A WITNESS POST.
 JV0814'
 JV0814'TO REACH THE AZIMUTH MARK FROM THE STATION, GO WESTERLY ON INTERSTATE
 JV0814'HIGHWAY 70 N FOR 1.65 MILES TO THE MARK ON THE RIGHT.
 JV0814'
 JV0814'(HP 3800 EDMI).
 JV0814'
 JV0814'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES EAST OF
 JV0814'COOKSVILLE.
 JV0814
 JV0814                          STATION RECOVERY (1986)
 JV0814
 JV0814'RECOVERED 1986
 JV0814'RECOVERED IN GOOD CONDITION.
 JV0814
 JV0814                          STATION RECOVERY (2017)
 JV0814
 JV0814'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV0814'THE STATION IS IN A HEAVILY WOODED AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0815 ***********************************************************************
 JV0815  DESIGNATION -  BALTO NAT PIKE 4 2 RM 3
 JV0815  PID         -  JV0815
 JV0815  STATE/COUNTY-  MD/HOWARD
 JV0815  COUNTRY     -  US
 JV0815  USGS QUAD   -  SYKESVILLE (2016)
 JV0815
 JV0815                         *CURRENT SURVEY CONTROL
 JV0815  ______________________________________________________________________
 JV0815* NAD 83(1986) POSITION- 39 18 33.96   (N) 076 57 33.36   (W)   HD_HELD1
 JV0815* NAVD 88 ORTHO HEIGHT -   180.58  (meters)      592.5   (feet) RESET
 JV0815  ______________________________________________________________________
 JV0815  GEOID HEIGHT    -        -31.944 (meters)                     GEOID18
 JV0815  VERT ORDER      -  THIRD
 JV0815
 JV0815.The horizontal coordinates were determined by differentially corrected
 JV0815.hand held GPS observations or other comparable positioning techniques
 JV0815.and have an estimated accuracy of +/- 3 meters.
 JV0815
 JV0815.The orthometric height was computed from unverified reset data.
 JV0815
 JV0815.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0815.GEOID18 height accuracy estimate available here.
 JV0815
 JV0815.Click photographs - Photos may exist for this station.
 JV0815
 JV0815;                    North         East    Units  Estimated Accuracy
 JV0815;SPC MD       -   182,358.5     403,513.1     MT  (+/- 3 meters HH1 GPS) 
 JV0815
 JV0815_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3107852945(NAD 83)
 JV0815
 JV0815                          SUPERSEDED SURVEY CONTROL
 JV0815
 JV0815  NGVD 29 (??/??/??)  180.80   (m)          593.2    (f) RESET       3  
 JV0815
 JV0815.Superseded values are not recommended for survey control.
 JV0815
 JV0815.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0815.See file dsdata.pdf to determine how the superseded data were derived.
 JV0815
 JV0815_MARKER: DR = REFERENCE MARK DISK
 JV0815_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0815_STAMPING: BALTO NAT PIKE NO 4-2 NO 3 1971
 JV0815_MARK LOGO: CGS
 JV0815_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0815+STABILITY: SURFACE MOTION
 JV0815
 JV0815  HISTORY     - Date     Condition        Report By
 JV0815  HISTORY     - 1971     MONUMENTED       NGS
 JV0815
 JV0815                          STATION DESCRIPTION
 JV0815
 JV0815'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0815'3.3 MI E FROM COOKSVILLE.
 JV0815'0.3 MILE NORTH ALONG STATE HIGHWAY NO. 97 FROM THE CROSSROAD
 JV0815'IN COOKSVILLE, THEN EAST ALONG INTERSTATE HIGHWAY I-70N FOR
 JV0815'1.3 MILES TO A HIGH CUT BANK ON THE RIGHT, JUST BEFORE REACHING
 JV0815'AN INTERCHANGE AND JUNCTION WITH STATE HIGHWAY NO. 32, AND THE
 JV0815'MARKER ON TOP OF BANK AT SOUTH EDGE OF HIGHWAY RIGHT-OF-WAY.  IT
 JV0815'IS AT THE NORTH EDGE OF AN OPEN FIELD, 17.40 FEET EAST-SOUTHEAST
 JV0815'OF THE TRIANGULATION STATION, 297 FEET EAST OF THE EDGE OF A
 JV0815'WOODS, 17.5 FEET EAST OF A METAL WITNESS POST AND SIGN AND ABOUT
 JV0815'3.0 FEET SOUTH OF TOP OF CUT BANK.  THE DISK IS SET IN THE TOP
 JV0815'OF A ROUND CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0816 ***********************************************************************
 JV0816  DESIGNATION -  BALTO NAT PIKE 4 2 RM 4
 JV0816  PID         -  JV0816
 JV0816  STATE/COUNTY-  MD/HOWARD
 JV0816  COUNTRY     -  US
 JV0816  USGS QUAD   -  SYKESVILLE (2016)
 JV0816
 JV0816                         *CURRENT SURVEY CONTROL
 JV0816  ______________________________________________________________________
 JV0816* NAD 83(1986) POSITION- 39 18 34.08   (N) 076 57 33.78   (W)   HD_HELD1
 JV0816* NAVD 88 ORTHO HEIGHT -   181.70  (meters)      596.1   (feet) RESET
 JV0816  ______________________________________________________________________
 JV0816  GEOID HEIGHT    -        -31.944 (meters)                     GEOID18
 JV0816  VERT ORDER      -  THIRD
 JV0816
 JV0816.The horizontal coordinates were determined by differentially corrected
 JV0816.hand held GPS observations or other comparable positioning techniques
 JV0816.and have an estimated accuracy of +/- 3 meters.
 JV0816
 JV0816.The orthometric height was computed from unverified reset data.
 JV0816
 JV0816.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0816.GEOID18 height accuracy estimate available here.
 JV0816
 JV0816.Click photographs - Photos may exist for this station.
 JV0816
 JV0816;                    North         East    Units  Estimated Accuracy
 JV0816;SPC MD       -   182,362.2     403,503.0     MT  (+/- 3 meters HH1 GPS) 
 JV0816
 JV0816_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3106852949(NAD 83)
 JV0816
 JV0816                          SUPERSEDED SURVEY CONTROL
 JV0816
 JV0816  NGVD 29 (??/??/??)  181.91   (m)          596.8    (f) RESET       3  
 JV0816
 JV0816.Superseded values are not recommended for survey control.
 JV0816
 JV0816.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0816.See file dsdata.pdf to determine how the superseded data were derived.
 JV0816
 JV0816_MARKER: DR = REFERENCE MARK DISK
 JV0816_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0816_STAMPING: BALTO NAT PIKE NO 4-2 NO 4 1971
 JV0816_MARK LOGO: CGS
 JV0816_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0816+STABILITY: SURFACE MOTION
 JV0816
 JV0816  HISTORY     - Date     Condition        Report By
 JV0816  HISTORY     - 1971     MONUMENTED       NGS
 JV0816
 JV0816                          STATION DESCRIPTION
 JV0816
 JV0816'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0816'3.3 MI E FROM COOKSVILLE.
 JV0816'0.3 MILE NORTH ALONG STATE HIGHWAY NO. 97 FROM THE CROSSROAD IN
 JV0816'COOKSVILLE, THEN EAST ALONG INTERSTATE HIGHWAY I-70N FOR
 JV0816'1.3 MILES TO A HIGH CUT BANK ON THE RIGHT, JUST BEFORE REACHING
 JV0816'AN INTERCHANGE AND JUNCTION WITH STATE HIGHWAY NO. 32, AND THE
 JV0816'MARKER ON THE TOP OF CUT BANK AT SOUTH EDGE OF HIGHWAY
 JV0816'RIGHT-OF-WAY.  IT IS AT THE NORTH EDGE OF AN OPEN FIELD, ABOUT
 JV0816'262 FEET EAST OF THE EDGE OF A WOODS, ABOUT 190 FEET WEST OF A
 JV0816'NORTH-SOUTH FENCELINE, 17.59 FEET WEST-NORTHWEST OF THE
 JV0816'TRIANGULATION STATION, 17.5 FEET NORTHWEST OF A METAL WITNESS
 JV0816'POST AND SIGN, AND ABOUT 3 FEET SOUTH OF TOP OF CUT BANK.
 JV0816'THE DISK IS SET IN THE TOP OF A ROUND CONCRETE MONUMENT THAT IS
 JV0816'ABOUT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6065 ***********************************************************************
 JV6065  DESIGNATION -  BALTO NAT PIKE 4 2 AZ MK 2
 JV6065  PID         -  JV6065
 JV6065  STATE/COUNTY-  MD/HOWARD
 JV6065  COUNTRY     -  US
 JV6065  USGS QUAD   -  SYKESVILLE (2016)
 JV6065
 JV6065                         *CURRENT SURVEY CONTROL
 JV6065  ______________________________________________________________________
 JV6065* NAD 83(1991) POSITION- 39 19 13.17468(N) 076 59 12.99197(W)   ADJUSTED
 JV6065* NAVD 88 ORTHO HEIGHT -   173.1   (meters)      568.    (feet) VERTCON3
 JV6065  ______________________________________________________________________
 JV6065  GEOID HEIGHT    -        -31.910 (meters)                     GEOID18
 JV6065  LAPLACE CORR    -         -2.13  (seconds)                    DEFLEC18
 JV6065  HORZ ORDER      -  SECOND
 JV6065
 JV6065.The horizontal coordinates were established by classical geodetic methods
 JV6065.and adjusted by the National Geodetic Survey in January 1992.
 JV6065
 JV6065.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6065.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6065
 JV6065.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6065.GEOID18 height accuracy estimate available here.
 JV6065
 JV6065.Click photographs - Photos may exist for this station.
 JV6065
 JV6065.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6065
 JV6065. The following values were computed from the NAD 83(1991) position.
 JV6065
 JV6065;                    North         East     Units Scale Factor Converg.
 JV6065;SPC MD       -   183,567.146   401,126.008   MT  0.99997989   +0 00 29.5
 JV6065;SPC MD       -   602,253.21  1,316,027.58   sFT  0.99997989   +0 00 29.5
 JV6065;UTM  18      - 4,354,206.829   328,718.823   MT  0.99996123   -1 15 33.6
 JV6065
 JV6065!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6065!SPC MD       -   0.99997785  x   0.99997989  =   0.99995774
 JV6065!UTM  18      -   0.99997785  x   0.99996123  =   0.99993908
 JV6065
 JV6065:                Primary Azimuth Mark                     Grid Az
 JV6065:SPC MD       -  BALTO NAT PIKE 4 2                       116 52 33.8
 JV6065:UTM  18      -  BALTO NAT PIKE 4 2                       118 08 36.9
 JV6065
 JV6065_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2871854206(NAD 83)
 JV6065
 JV6065|---------------------------------------------------------------------|
 JV6065| PID    Reference Object                     Distance      Geod. Az  |
 JV6065|                                                           dddmmss.s |
 JV6065| JV0814 BALTO NAT PIKE 4 2                  APPROX. 2.7 KM 1165303.3 |
 JV6065|---------------------------------------------------------------------|
 JV6065
 JV6065                          SUPERSEDED SURVEY CONTROL
 JV6065
 JV6065  NAD 83(1986)-  39 19 13.17327(N)    076 59 13.00017(W) AD(       ) 2
 JV6065  NAD 27      -  39 19 12.79584(N)    076 59 14.07509(W) AD(       ) 2
 JV6065  NGVD 29 (07/19/86)  173.3    (m)          569.     (f) VERT ANG       
 JV6065
 JV6065.Superseded values are not recommended for survey control.
 JV6065
 JV6065.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6065.See file dsdata.pdf to determine how the superseded data were derived.
 JV6065
 JV6065_MARKER: DR = REFERENCE MARK DISK
 JV6065_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6065_STAMPING: BALTON NAT PIKE NO 4-2 1971 AZ 2 1975
 JV6065_MARK LOGO: NGS
 JV6065_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6065+STABILITY: SURFACE MOTION
 JV6065
 JV6065  HISTORY     - Date     Condition        Report By
 JV6065  HISTORY     - 1975     MONUMENTED       NGS
 JV6065  HISTORY     - 1977     GOOD             NGS
 JV6065
 JV6065                          STATION DESCRIPTION
 JV6065
 JV6065'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV6065'THE STATION IS LOCATED ABOUT 21 MILES WEST OF BALTIMORE, 2 MILES EAST
 JV6065'OF COOKSVILLE, 2 MILES WEST OF SLACKS CORNERS AND ON HIGHWAY
 JV6065'RIGHT-OF-WAY.
 JV6065'
 JV6065'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 32 AND INTERSTATE
 JV6065'HIGHWAY 70 N WHICH IS 1 MILE SOUTH OF SLACKS CORNERS, GO WESTERLY ON
 JV6065'INTERSTATE HIGHWAY 70 N FOR 2.05 MILES TO THE MARK ON THE RIGHT,
 JV6065'NORTH SIDE OF THE ROAD AND JUST WEST OF A LONE TREE.
 JV6065'
 JV6065'THE MARK IS A STANDARD REFERENCE DISK STAMPED BALTO NAT PIKE NO 4-2
 JV6065'1971 AZ 2 1975, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT
 JV6065'WHICH PROJECTS 1-INCH.  IT IS 183 FEET WEST OF THE LONE TREE, 80
 JV6065'FEET NORTH OF THE CENTER OF THE WEST BOUND LANE OF INTERSTATE
 JV6065'HIGHWAY 70 N, 11 FEET SOUTH OF THE NORTH RIGHT-OF-WAY FENCE AND 2.6
 JV6065'FEET EAST OF A WITNESS POST.
 JV6065'
 JV6065'THIS MARK IS THE AZIMUTH MARK FOR TRAVERSE STATION BALTO NAT PIKE NO
 JV6065'4-2 1971 AND THERE ARE NO REFERENCE MARK AT IT.
 JV6065'
 JV6065'(HP 3800 EDMI).
 JV6065
 JV6065                          STATION RECOVERY (1977)
 JV6065
 JV6065'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 JV6065'THE STATION WAS RECOVERED AND FOUND IN GOOD CONDITION AS DESCRIBED.
 JV6065'THE DISK WAS FOUND TO HAVE BEEN STAMPED IN ERROR, IT WAS CHANGED TO
 JV6065'READ BALTO NAT PIKE NO 4-2 1971 AZ 1975.
 JV6065'
 JV6065'THERE WERE NO OTHER CHANGES AT THIS STATION.
 JV6065'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2 MILES EAST OF
 JV6065'COOKSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0813 ***********************************************************************
 JV0813  DESIGNATION -  BALTO NAT PIKE 4 RM 1
 JV0813  PID         -  JV0813
 JV0813  STATE/COUNTY-  MD/HOWARD
 JV0813  COUNTRY     -  US
 JV0813  USGS QUAD   -  SYKESVILLE (2016)
 JV0813
 JV0813                         *CURRENT SURVEY CONTROL
 JV0813  ______________________________________________________________________
 JV0813* NAD 83(1986) POSITION- 39 18 34.23   (N) 076 57 33.06   (W)   HD_HELD1
 JV0813* NAVD 88 ORTHO HEIGHT -   181.912 (meters)      596.82  (feet) ADJUSTED
 JV0813  ______________________________________________________________________
 JV0813  GEOID HEIGHT    -        -31.944 (meters)                     GEOID18
 JV0813  DYNAMIC HEIGHT  -        181.816 (meters)      596.51  (feet) COMP
 JV0813  MODELED GRAVITY -    980,095.6   (mgal)                       NAVD 88
 JV0813
 JV0813  VERT ORDER      -  SECOND    CLASS 0
 JV0813
 JV0813.The horizontal coordinates were determined by differentially corrected
 JV0813.hand held GPS observations or other comparable positioning techniques
 JV0813.and have an estimated accuracy of +/- 3 meters.
 JV0813
 JV0813.The orthometric height was determined by differential leveling and
 JV0813.adjusted by the NATIONAL GEODETIC SURVEY
 JV0813.in June 1991.
 JV0813
 JV0813.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0813.GEOID18 height accuracy estimate available here.
 JV0813
 JV0813.Click photographs - Photos may exist for this station.
 JV0813
 JV0813.The dynamic height is computed by dividing the NAVD 88
 JV0813.geopotential number by the normal gravity value computed on the
 JV0813.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0813.degrees latitude (g = 980.6199 gals.).
 JV0813
 JV0813.The modeled gravity was interpolated from observed gravity values.
 JV0813
 JV0813;                    North         East    Units  Estimated Accuracy
 JV0813;SPC MD       -   182,366.9     403,520.3     MT  (+/- 3 meters HH1 GPS) 
 JV0813
 JV0813_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3108552953(NAD 83)
 JV0813
 JV0813                          SUPERSEDED SURVEY CONTROL
 JV0813
 JV0813  NGVD 29 (11/26/84)  182.126  (m)          597.53   (f) ADJUSTED    2 0
 JV0813
 JV0813.Superseded values are not recommended for survey control.
 JV0813
 JV0813.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0813.See file dsdata.pdf to determine how the superseded data were derived.
 JV0813
 JV0813_MARKER: DR = REFERENCE MARK DISK
 JV0813_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0813_STAMPING: BALTO NAT PIKE NO 4 NO 1 1953
 JV0813_MARK LOGO: CGS
 JV0813_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0813+STABILITY: SURFACE MOTION
 JV0813
 JV0813  HISTORY     - Date     Condition        Report By
 JV0813  HISTORY     - 1953     MONUMENTED       CGS
 JV0813  HISTORY     - 1958     GOOD             CGS
 JV0813
 JV0813                          STATION DESCRIPTION
 JV0813
 JV0813'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0813'3.7 MI E FROM COOKSVILLE.
 JV0813'0.3 MILE NORTH ALONG STATE HIGHWAY NO. 97 FROM THE POST OFFICE
 JV0813'AT COOKSVILLE, THENCE 3.4 MILES EAST ALONG U.S. HIGHWAY 40,
 JV0813'ON THE TOP OF A HIGH CUT BANK, 30.8 FEET EAST OF THE STATION,
 JV0813'4 FEET NORTH OF THE NORTH EDGE OF THE FIELD, SET IN THE TOP OF A
 JV0813'CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4055 ***********************************************************************
 JV4055  DESIGNATION -  BALTO NAT PIKE 5 2
 JV4055  PID         -  JV4055
 JV4055  STATE/COUNTY-  MD/HOWARD
 JV4055  COUNTRY     -  US
 JV4055  USGS QUAD   -  SYKESVILLE (2016)
 JV4055
 JV4055                         *CURRENT SURVEY CONTROL
 JV4055  ______________________________________________________________________
 JV4055* NAD 83(1991) POSITION- 39 18 29.91029(N) 076 56 33.93782(W)   ADJUSTED
 JV4055* NAVD 88 ORTHO HEIGHT -   189.676 (meters)      622.30  (feet) ADJUSTED
 JV4055  ______________________________________________________________________
 JV4055  GEOID HEIGHT    -        -31.968 (meters)                     GEOID18
 JV4055  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 JV4055  DYNAMIC HEIGHT  -        189.576 (meters)      621.97  (feet) COMP
 JV4055  MODELED GRAVITY -    980,093.7   (mgal)                       NAVD 88
 JV4055
 JV4055  HORZ ORDER      -  SECOND
 JV4055  VERT ORDER      -  SECOND    CLASS I
 JV4055
 JV4055.The horizontal coordinates were established by classical geodetic methods
 JV4055.and adjusted by the National Geodetic Survey in January 1992.
 JV4055
 JV4055.The orthometric height was determined by differential leveling and
 JV4055.adjusted by the NATIONAL GEODETIC SURVEY
 JV4055.in March 2010.
 JV4055
 JV4055.No vertical observational check was made to the station.
 JV4055
 JV4055.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4055.GEOID18 height accuracy estimate available here.
 JV4055
 JV4055.Click photographs - Photos may exist for this station.
 JV4055
 JV4055.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4055
 JV4055.The dynamic height is computed by dividing the NAVD 88
 JV4055.geopotential number by the normal gravity value computed on the
 JV4055.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV4055.degrees latitude (g = 980.6199 gals.).
 JV4055
 JV4055.The modeled gravity was interpolated from observed gravity values.
 JV4055
 JV4055. The following values were computed from the NAD 83(1991) position.
 JV4055
 JV4055;                    North         East     Units Scale Factor Converg.
 JV4055;SPC MD       -   182,234.398   404,936.753   MT  0.99997828   +0 02 09.3
 JV4055;SPC MD       -   597,880.69  1,328,530.00   sFT  0.99997828   +0 02 09.3
 JV4055;UTM  18      - 4,352,790.166   332,499.064   MT  0.99994546   -1 13 51.6
 JV4055
 JV4055!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4055!SPC MD       -   0.99997526  x   0.99997828  =   0.99995354
 JV4055!UTM  18      -   0.99997526  x   0.99994546  =   0.99992072
 JV4055
 JV4055:                Primary Azimuth Mark                     Grid Az
 JV4055:SPC MD       -  BALTO NAT PIKE 5 2 AZ MK 2               102 19 53.1
 JV4055:UTM  18      -  BALTO NAT PIKE 5 2 AZ MK 2               103 35 54.0
 JV4055
 JV4055_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3249952790(NAD 83)
 JV4055
 JV4055|---------------------------------------------------------------------|
 JV4055| PID    Reference Object                     Distance      Geod. Az  |
 JV4055|                                                           dddmmss.s |
 JV4055| JV4056 BALTO NAT PIKE 5 2 RM 3               5.531 METERS 09841     |
 JV4055| JV6064 BALTO NAT PIKE 5 2 AZ MK 2          APPROX. 1.1 KM 1022202.4 |
 JV4055| JV6061 CLARKSVILLE TRANSC GAS PIPE TR      APPROX. 4.7 KM 1683726.0 |
 JV4055| JV0818 BALTO NAT PIKE 5                     13.804 METERS 18817     |
 JV4055| JV6015 CLARKSVILLE ATT MICROWAVE           APPROX.10.3 KM 1953454.1 |
 JV4055| JV4054 BALTO NAT PIKE 5 2 RM 4               4.998 METERS 27831     |
 JV4055|---------------------------------------------------------------------|
 JV4055
 JV4055                          SUPERSEDED SURVEY CONTROL
 JV4055
 JV4055  NAD 83(1986)-  39 18 29.90846(N)    076 56 33.94619(W) AD(       ) 2
 JV4055  NAD 27      -  39 18 29.53030(N)    076 56 35.02457(W) AD(       ) 2
 JV4055  NAVD 88 (11/18/05)  189.670  (m)          622.28   (f) SUPERSEDED  3 0
 JV4055  NGVD 29 (??/??/??)  189.84   (m)          622.8    (f) RESET       3  
 JV4055  NGVD 29             189.81   (m)          622.7    (f) LEVELING    3  
 JV4055
 JV4055.Superseded values are not recommended for survey control.
 JV4055
 JV4055.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4055.See file dsdata.pdf to determine how the superseded data were derived.
 JV4055
 JV4055_MARKER: DS = TRIANGULATION STATION DISK
 JV4055_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4055_STAMPING: BALTO NAT PIKE NO 5-2 1971
 JV4055_MARK LOGO: CGS
 JV4055_PROJECTION: FLUSH
 JV4055_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4055_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4055+STABILITY: SURFACE MOTION
 JV4055_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4055+SATELLITE: SATELLITE OBSERVATIONS - January 14, 1999
 JV4055
 JV4055  HISTORY     - Date     Condition        Report By
 JV4055  HISTORY     - 1971     MONUMENTED       NGS
 JV4055  HISTORY     - 1971     GOOD             NGS
 JV4055  HISTORY     - 1974     GOOD             NGS
 JV4055  HISTORY     - 1975     GOOD             NGS
 JV4055  HISTORY     - 19990114 GOOD             MDSHA
 JV4055
 JV4055                          STATION DESCRIPTION
 JV4055
 JV4055'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV4055'STATION IS LOCATED ON THE TOP OF A HIGH OUT BANK ON THE NORTH SIDE
 JV4055'OF HIGHWAY I-70N, 11.0 MILES WEST OF CANTONSVILLE, 4.3 MILES
 JV4055'EAST-SOUTH-EAST OF THE VILLAGE OF COOKSVILLE, 1.85 MILES WEST OF
 JV4055'THE INTERSECTION OF U. S. HIGHWAY 40 AND I-70N, AND 0.5 MILE EAST
 JV4055'OF THE INTERCHANGE OF I-70N AND STATE HIGHWAY 32.
 JV4055'
 JV4055'THE STATION IS A C AND GS TRIANGULATION STATION MARK DISK SET IN THE
 JV4055'TOP OF A ROUND CONCRETE MARK 10-INCHES IN DIAMETER AND FLUSH WITH
 JV4055'SURFACE OF THE GROUND.  IT IS ON THE TOP OF A HIGH CUT BANK ABOUT
 JV4055'120 FEET NORTH OF THE NORTH EDGE OF THE WEST BOUND TRAFFIC LANES OF
 JV4055'I-70N, 2.0 FEET SOUTH OF THE NORTH SURVEYED RIGHT-OF-WAY LINE FOR THE
 JV4055'NEW R/W FOR I-70N, AND 2.0 FEET WEST OF A METAL WITNESS POST AND
 JV4055'SIGN.  THE SUBSURFACE MARK IS ABOUT 30-INCHES BELOW THE SURFACE OF
 JV4055'THE GROUND.  THE DISKS ARE STAMPED BALTO NAT PIKE NO 5-2 1971.
 JV4055'
 JV4055'REFERENCE MARK NO. 3 IS ABOUT THE SAME ELEVATION AS THE STATION, 16
 JV4055'FEET EAST OF A METAL WITNESS POST AND SIGN, AND 2.0 FEET SOUTH OF
 JV4055'THE NORTH HIGHWAY RIGHT-OF-WAY LINE.  IT IS SET FLUSH WITH THE
 JV4055'GROUND AND THE DISK IS STAMPED BALTO NAT PIKE NO 5-2 NO 3 1971.
 JV4055'
 JV4055'REFERENCE MARK NO. 4 IS ABOUT THE SAME ELEVATION AS THE STATION,
 JV4055'18.5 FEET WEST OF A METAL WITNESS SIGN AND POST, ABOUT 2.0 FEET
 JV4055'SOUTH OF THE NORTH HIGHWAY RIGHT-OF-WAY LINE.  IT IS SET FLUSH WITH
 JV4055'THE GROUND AND THE DISK IS STAMPED BALTO NAT PIKE NO 5-2 NO 4
 JV4055'1971.
 JV4055'
 JV4055'STATION BALTO NAT PIKE NO 4-2 WILL SERVE FOR AZIMUTH MARK TO THIS
 JV4055'STATION.  IT IS 0.9 MILE WEST OF THE STATION ON THE TOP OF A CUT
 JV4055'BANK ON THE SOUTH SIDE OF HIGHWAY I-70N.
 JV4055'
 JV4055'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND 29, ABOUT 1.0
 JV4055'MILE NORTH OF ELLICOTT CITY.  GO WESTERLY ON U. S. HIGHWAY 40 FOR
 JV4055'4.75 MILES TO A CROSSROAD, MARRIOTTSVILLE ROAD, CONTINUE WESTERLY
 JV4055'ON U.S. HIGHWAY 40 FOR 0.65 MILE TO A BRIDGE OVER EAST BOUND
 JV4055'TRAFFIC LANE OF I-70N, CROSS BRIDGE AND CONTINUE WESTERLY ON
 JV4055'I-70N FOR 1.85 MILES TO THE STATION ON TOP OF HIGH CUT BANK ON
 JV4055'RIGHT, NORTH SIDE OF HIGHWAY.
 JV4055
 JV4055                          STATION RECOVERY (1971)
 JV4055
 JV4055'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV4055'4.7 MILES EAST FROM COOKSVILLE.
 JV4055'FROM THE JUNCTION OF U.S. HIGHWAYS NO. 40 AND 29, ABOUT
 JV4055'1.0 MILE NORTH OF ELLICOTT CITY, GO WESTERLY ON U.S. HIGHWAY 40 FOR
 JV4055'4.75 MILES TO A CROSSROAD, NARRIOTTSVILLE ROAD, CONTINUE WESTERLY ON
 JV4055'U.S. HIGHWAY 40 FOR 0.65 MILE TO BRIDGE OVER I-70N, CROSS AND CONTINUE
 JV4055'WESTERLY ON I-70N FOR 1.85 MILES TO STATION ON RIGHT AT TOP OF HIGH
 JV4055'CUT BANK. IT IS 0.5 MILE EAST OF INTERCHANGE OF I-70N AND STATE
 JV4055'HIGHWAY 32, ABOUT 120 FEET NORTH OF THE NORTH EDGE OF THE WEST BOUND
 JV4055'TRAFFIC LANES OF I-70N, 2 FEET SOUTH OF THE NORTH SURVEYED RIGHT-OF-
 JV4055'WAY LINE FOR THE NEW HIGHWAY R/W, AND 2 FEET WEST OF OF A METAL
 JV4055'WITNESS POST AND SIGN. SET IN THE TOP OF A CONCRETE CYLINDER 10-INCHES
 JV4055'IN DIAMETER AND FLUSH WITH THE GROUND.
 JV4055
 JV4055                          STATION RECOVERY (1974)
 JV4055
 JV4055'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV4055'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JV4055'AS DESCRIBED IN THE 1971 DESCRIPTION.  THE DISTANCE AND DIRECTIONS
 JV4055'TO ALL OBJECTS WERE WITHIN CLOSE AGREEMENT WITH THE 1971
 JV4055'OBSERVATIONS.
 JV4055'
 JV4055'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--4 MILES EAST OF
 JV4055'COOKSVILLE.
 JV4055
 JV4055                          STATION RECOVERY (1975)
 JV4055
 JV4055'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV4055'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV4055'CONDITION.  THE DISTANCES AND DIRECTIONS TO ALL MARKS WERE WITHIN
 JV4055'CLOSE AGREEMENT WITH THE 1971 AND 1974 DESCRIPTIONS.  A NEW AZIMUTH
 JV4055'MARK WAS ESTABLISHED AT THIS DATE.
 JV4055'
 JV4055'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV4055'
 JV4055'THE STATION IS LOCATED ABOUT 19 MILES WEST OF BALTIMORE, 4 MILES EAST
 JV4055'OF COOKSVILLE AND 1 MILE NORTHEAST OF WEST FRIENDSHIP.  IT IS ON THE
 JV4055'NORTH SIDE OF INTERSTATE HIGHWAY 70 N AND ON HIGHWAY RIGHT-OF-WAY.
 JV4055'
 JV4055'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 70 N AND STATE
 JV4055'HIGHWAY 32, GO EAST ON INTERSTATE HIGHWAY 70 N FOR 0.5 MILE TO THE
 JV4055'STATION ON THE LEFT, NORTH SIDE OF THE ROAD ATOP A 50 FOOT HIGH
 JV4055'CUTBANK.
 JV4055'
 JV4055'THE STATION MARK IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 5-2
 JV4055'1971, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JV4055'FLUSH WITH THE SURFACE.  IT IS ABOUT 100 FEET NORTH OF THE CENTER
 JV4055'OF INTERSTATE HIGHWAY 70 N, 2.2 FEET SOUTHEAST OF A WITNESS POST
 JV4055'AND 0.3 FOOT SOUTH OF THE NORTH RIGHT-OF-WAY FENCE FOR
 JV4055'INTERSTATE HIGHWAY 70 N.
 JV4055'
 JV4055'REFERENCE MARK 3 IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 5-2 NO
 JV4055'3 1971, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JV4055'FLUSH WITH THE SURFACE.  IT IS 16 FEET EAST OF THE WITNESS POST
 JV4055'AND 0.5 FOOT SOUTH OF THE RIGHT-OF-WAY FENCE.
 JV4055'
 JV4055'REFERENCE MARK 4 IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 5-2 NO
 JV4055'4 1971, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JV4055'FLUSH WITH THE SURFACE.  IT IS 18.5 FEET WEST OF THE WITNESS POST
 JV4055'AND 0.3 FOOT SOUTH OF THE RIGHT-OF-WAY FENCE.
 JV4055'
 JV4055'THE AZIMUTH MARK IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 5-2
 JV4055'1971 AZ 2 1975, CEMENTED IN A DRILL HOLE IN THE SOUTH RETAINING WALL
 JV4055'OF THE FIRST OVERPASS BRIDGE ALONG INTERSTATE HIGHWAY 70 N TO THE
 JV4055'EAST OF THE STATION.  IT IS ABOUT LEVEL WITH THE EAST BOUND LANE OF
 JV4055'THE HIGHWAY, 32.2 FEET EAST OF THE WEST EDGE OF THE WALL, 20.3 FEET
 JV4055'WEST OF THE EAST EDGE OF THE WALL AND 41 FEET SOUTH OF THE CENTER
 JV4055'OF THE EAST BOUND LANE OF THE HIGHWAY.
 JV4055'
 JV4055'TO REACH THE AZIMUTH MARK FROM THE STATION, GO EAST ON INTERSTATE
 JV4055'HIGHWAY 70 N FOR 0.5 MILE TO THE OVERPASS BRIDGE AND THE MARK ON THE
 JV4055'RIGHT, UNDER THE OVERPASS BRIDGE.
 JV4055'
 JV4055'(HP 3800 EDMI).
 JV4055'
 JV4055'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--4 MILES EAST OF
 JV4055'COOKSVILLE.
 JV4055
 JV4055                          STATION RECOVERY (1999)
 JV4055
 JV4055'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV4055'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4054 ***********************************************************************
 JV4054  DESIGNATION -  BALTO NAT PIKE 5 2 RM 4
 JV4054  PID         -  JV4054
 JV4054  STATE/COUNTY-  MD/HOWARD
 JV4054  COUNTRY     -  US
 JV4054  USGS QUAD   -  SYKESVILLE (2016)
 JV4054
 JV4054                         *CURRENT SURVEY CONTROL
 JV4054  ______________________________________________________________________
 JV4054* NAD 83(1986) POSITION- 39 18 29.93   (N) 076 56 34.14   (W)   HD_HELD1
 JV4054* NAVD 88 ORTHO HEIGHT -   189.58  (meters)      622.0   (feet) RESET
 JV4054  ______________________________________________________________________
 JV4054  GEOID HEIGHT    -        -31.968 (meters)                     GEOID18
 JV4054  VERT ORDER      -  THIRD
 JV4054
 JV4054.The horizontal coordinates were determined by differentially corrected
 JV4054.hand held GPS observations or other comparable positioning techniques
 JV4054.and have an estimated accuracy of +/- 3 meters.
 JV4054
 JV4054.The orthometric height was computed from unverified reset data.
 JV4054
 JV4054.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4054.GEOID18 height accuracy estimate available here.
 JV4054
 JV4054.Click photographs - Photos may exist for this station.
 JV4054
 JV4054;                    North         East    Units  Estimated Accuracy
 JV4054;SPC MD       -   182,235.0     404,931.9     MT  (+/- 3 meters HH1 GPS) 
 JV4054
 JV4054_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3249452790(NAD 83)
 JV4054
 JV4054                          SUPERSEDED SURVEY CONTROL
 JV4054
 JV4054  NGVD 29 (??/??/??)  189.79   (m)          622.7    (f) RESET       3  
 JV4054
 JV4054.Superseded values are not recommended for survey control.
 JV4054
 JV4054.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4054.See file dsdata.pdf to determine how the superseded data were derived.
 JV4054
 JV4054_MARKER: DR = REFERENCE MARK DISK
 JV4054_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4054_STAMPING: BALTO NAT PIKE NO 5-2 NO 4 1971
 JV4054_MARK LOGO: CGS
 JV4054_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4054+STABILITY: SURFACE MOTION
 JV4054
 JV4054  HISTORY     - Date     Condition        Report By
 JV4054  HISTORY     - 1971     MONUMENTED       NGS
 JV4054  HISTORY     - 1990114  MARK NOT FOUND   MDSHA
 JV4054
 JV4054                          STATION DESCRIPTION
 JV4054
 JV4054'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV4054'4.7 MILES EAST FROM COOKSVILLE.
 JV4054'FROM THE JUNCTION OF U.S. HIGHWAYS NO. 40 AND 29, ABOUT
 JV4054'1.0 MILE NORTH OF ELLICOTT CITY, GO WESTERLY ON U.S. HIGHWAY 40 FOR
 JV4054'4.75 MILES TO A CROSSROAD, MARRIOTTSVILLE ROAD, CONTINUE WESTERLY ON
 JV4054'U.S. HIGHWAY 40 FOR 0.65 MILE TO BRIDGE OVER I-70N, CROSS AND CONTINUE
 JV4054'WESTERLY ON I-70N FOR 1.85 MILES TO MARKER ON RIGHT ON TOP OF A HIGH
 JV4054'CUT BANK. IT IS 0.5 MILE EAST OF INTERCHANGE OF I-70N AND STATE
 JV4054'HIGHWAY 32, ABOUT 120 FEET NORTH OF THE NORTH EDGE OF THE WEST BOUND
 JV4054'TRAFFIC LANES OF I-70N, ABOUT 2 FEET SOUTH OF THE NORTH SURVEYED RIGHT
 JV4054'-OF-WAY LINE FOR NEW HIGHWAY R/W, AND 18.5 FEET WEST OF A METAL
 JV4054'WITNESS POST AND SIGN. IT IS SET IN THE TOP OF A ROUND CONCRETE
 JV4054'MONUMENT FLUSH WITH THE GROUND.
 JV4054
 JV4054                          STATION RECOVERY (1990)
 JV4054
 JV4054'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990 (SFK)
 JV4054'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4056 ***********************************************************************
 JV4056  DESIGNATION -  BALTO NAT PIKE 5 2 RM 3
 JV4056  PID         -  JV4056
 JV4056  STATE/COUNTY-  MD/HOWARD
 JV4056  COUNTRY     -  US
 JV4056  USGS QUAD   -  SYKESVILLE (2016)
 JV4056
 JV4056                         *CURRENT SURVEY CONTROL
 JV4056  ______________________________________________________________________
 JV4056* NAD 83(1986) POSITION- 39 18 29.88   (N) 076 56 33.71   (W)   HD_HELD1
 JV4056* NAVD 88 ORTHO HEIGHT -   189.683 (meters)      622.32  (feet) ADJUSTED
 JV4056  ______________________________________________________________________
 JV4056  GEOID HEIGHT    -        -31.968 (meters)                     GEOID18
 JV4056  DYNAMIC HEIGHT  -        189.583 (meters)      621.99  (feet) COMP
 JV4056  MODELED GRAVITY -    980,093.7   (mgal)                       NAVD 88
 JV4056
 JV4056  VERT ORDER      -  SECOND    CLASS I
 JV4056
 JV4056.The horizontal coordinates were determined by differentially corrected
 JV4056.hand held GPS observations or other comparable positioning techniques
 JV4056.and have an estimated accuracy of +/- 3 meters.
 JV4056
 JV4056.The orthometric height was determined by differential leveling and
 JV4056.adjusted by the NATIONAL GEODETIC SURVEY
 JV4056.in March 2010.
 JV4056
 JV4056.No vertical observational check was made to the station.
 JV4056
 JV4056.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4056.GEOID18 height accuracy estimate available here.
 JV4056
 JV4056.Click photographs - Photos may exist for this station.
 JV4056
 JV4056.The dynamic height is computed by dividing the NAVD 88
 JV4056.geopotential number by the normal gravity value computed on the
 JV4056.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV4056.degrees latitude (g = 980.6199 gals.).
 JV4056
 JV4056.The modeled gravity was interpolated from observed gravity values.
 JV4056
 JV4056;                    North         East    Units  Estimated Accuracy
 JV4056;SPC MD       -   182,233.5     404,942.2     MT  (+/- 3 meters HH1 GPS) 
 JV4056
 JV4056_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3250452789(NAD 83)
 JV4056
 JV4056                          SUPERSEDED SURVEY CONTROL
 JV4056
 JV4056  NAVD 88 (11/18/05)  189.665  (m)          622.26   (f) SUPERSEDED  3 0
 JV4056  NGVD 29 (??/??/??)  189.88   (m)          623.0    (f) RESET       3  
 JV4056
 JV4056.Superseded values are not recommended for survey control.
 JV4056
 JV4056.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4056.See file dsdata.pdf to determine how the superseded data were derived.
 JV4056
 JV4056_MARKER: DR = REFERENCE MARK DISK
 JV4056_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4056_STAMPING: BALTO NAT PIKE NO 5-2 NO 3 1971
 JV4056_MARK LOGO: CGS
 JV4056_PROJECTION: FLUSH
 JV4056_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4056_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4056+STABILITY: SURFACE MOTION
 JV4056_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4056+SATELLITE: SATELLITE OBSERVATIONS - January 14, 1999
 JV4056
 JV4056  HISTORY     - Date     Condition        Report By
 JV4056  HISTORY     - 1971     MONUMENTED       NGS
 JV4056  HISTORY     - 19990114 GOOD             MDSHA
 JV4056
 JV4056                          STATION DESCRIPTION
 JV4056
 JV4056'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV4056'4.7 MILES EAST FROM COOKSVILLE.
 JV4056'FROM THE JUNCTION OF U.S. HIGHWAYS NO. 40 AND 29, ABOUT 1.0 MILE NORTH
 JV4056'OF ELLICOTT CITY, GO WESTERLY ON U.S. HIGHWAY 40 FOR 4.75 MILES TO A
 JV4056'CROSSROAD, MARRIOTTSVILLE ROAD, CONTINUE WESTERLY ON U.S. HIGHWAY 40
 JV4056'FOR 0.65 MILE TO BRIDGE OVER I-70N, CONTINUE WESTERLY ON I-70 FOR 1.85
 JV4056'MILES TO MARKER ON RIGHT, ON TOP OF A HIGH CUT BANK.  IT IS 0.5 MILE
 JV4056'EAST OF THE INTERSECTION OF I-70N AND STATE HIGHWAY 32, ABOUT 120 FEET
 JV4056'NORTH OF THE NORTH EDGE OF THE WEST BOUND TRAFFIC LANES, AND 2.0 FEET
 JV4056'SOUTH OF THE NORTH SURVEYED RIGHT-OF-WAY LINE FOR THE NEW HIGHWAY R/W.
 JV4056'IT IS SET IN THE TOP OF A ROUND CONCRETE CYLINDER, 10-INCHES IN
 JV4056'DIAMETER AND IS FLUSH WITH THE GROUND SURFACE, 16 FEET EAST OF A METAL
 JV4056'WITNESS POST AND SIGN.
 JV4056
 JV4056                          STATION RECOVERY (1999)
 JV4056
 JV4056'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV4056'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6064 ***********************************************************************
 JV6064  DESIGNATION -  BALTO NAT PIKE 5 2 AZ MK 2
 JV6064  PID         -  JV6064
 JV6064  STATE/COUNTY-  MD/HOWARD
 JV6064  COUNTRY     -  US
 JV6064  USGS QUAD   -  SYKESVILLE (2016)
 JV6064
 JV6064                         *CURRENT SURVEY CONTROL
 JV6064  ______________________________________________________________________
 JV6064* NAD 83(1991) POSITION- 39 18 22.42977(N) 076 55 50.03788(W)   ADJUSTED
 JV6064* NAVD 88 ORTHO HEIGHT -   173.716 (meters)      569.93  (feet) ADJUSTED
 JV6064  ______________________________________________________________________
 JV6064  GEOID HEIGHT    -        -31.988 (meters)                     GEOID18
 JV6064  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 JV6064  DYNAMIC HEIGHT  -        173.624 (meters)      569.63  (feet) COMP
 JV6064  MODELED GRAVITY -    980,092.5   (mgal)                       NAVD 88
 JV6064
 JV6064  HORZ ORDER      -  SECOND
 JV6064  VERT ORDER      -  SECOND    CLASS I
 JV6064
 JV6064.The horizontal coordinates were established by classical geodetic methods
 JV6064.and adjusted by the National Geodetic Survey in January 1992.
 JV6064
 JV6064.The orthometric height was determined by differential leveling and
 JV6064.adjusted by the NATIONAL GEODETIC SURVEY
 JV6064.in March 2010.
 JV6064
 JV6064.No vertical observational check was made to the station.
 JV6064
 JV6064.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6064.GEOID18 height accuracy estimate available here.
 JV6064
 JV6064.Click photographs - Photos may exist for this station.
 JV6064
 JV6064.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6064
 JV6064.The dynamic height is computed by dividing the NAVD 88
 JV6064.geopotential number by the normal gravity value computed on the
 JV6064.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6064.degrees latitude (g = 980.6199 gals.).
 JV6064
 JV6064.The modeled gravity was interpolated from observed gravity values.
 JV6064
 JV6064. The following values were computed from the NAD 83(1991) position.
 JV6064
 JV6064;                    North         East     Units Scale Factor Converg.
 JV6064;SPC MD       -   182,004.439   405,988.666   MT  0.99997801   +0 02 36.9
 JV6064;SPC MD       -   597,126.23  1,331,981.15   sFT  0.99997801   +0 02 36.9
 JV6064;UTM  18      - 4,352,537.015   333,545.598   MT  0.99994115   -1 13 23.6
 JV6064
 JV6064!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6064!SPC MD       -   0.99997776  x   0.99997801  =   0.99995578
 JV6064!UTM  18      -   0.99997776  x   0.99994115  =   0.99991892
 JV6064
 JV6064:                Primary Azimuth Mark                     Grid Az
 JV6064:SPC MD       -  BALTO NAT PIKE 5 2                       282 19 53.3
 JV6064:UTM  18      -  BALTO NAT PIKE 5 2                       283 35 53.8
 JV6064
 JV6064_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3354552537(NAD 83)
 JV6064
 JV6064|---------------------------------------------------------------------|
 JV6064| PID    Reference Object                     Distance      Geod. Az  |
 JV6064|                                                           dddmmss.s |
 JV6064| JV4055 BALTO NAT PIKE 5 2                  APPROX. 1.1 KM 2822230.2 |
 JV6064|---------------------------------------------------------------------|
 JV6064
 JV6064                          SUPERSEDED SURVEY CONTROL
 JV6064
 JV6064  NAD 83(1986)-  39 18 22.42788(N)    076 55 50.04622(W) AD(       ) 2
 JV6064  NAD 27      -  39 18 22.04950(N)    076 55 51.12616(W) AD(       ) 2
 JV6064  NGVD 29 (07/19/86)  173.8    (m)          570.     (f) VERT ANG       
 JV6064
 JV6064.Superseded values are not recommended for survey control.
 JV6064
 JV6064.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6064.See file dsdata.pdf to determine how the superseded data were derived.
 JV6064
 JV6064_MARKER: DR = REFERENCE MARK DISK
 JV6064_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6064_SP_SET: RETAINING WALL
 JV6064_STAMPING: BALTO NAT PIKE NO 5-2 1971 AZ 1975
 JV6064_MARK LOGO: NGS
 JV6064_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6064_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6064+STABILITY: SURFACE MOTION
 JV6064_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6064+SATELLITE: SATELLITE OBSERVATIONS - January 14, 1999
 JV6064
 JV6064  HISTORY     - Date     Condition        Report By
 JV6064  HISTORY     - 1975     MONUMENTED       NGS
 JV6064  HISTORY     - 1977     GOOD             NGS
 JV6064  HISTORY     - 19990114 GOOD             MDSHA
 JV6064
 JV6064                          STATION DESCRIPTION
 JV6064
 JV6064'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV6064'THE STATION IS LOCATED ABOUT 16 AIRLINE MILES WEST OF BALTIMORE,
 JV6064'1-1/4 MILE SOUTHEAST OF SLACKS CORNER AND 1 MILE EAST-NORTHEAST OF
 JV6064'WEST FRIENDSHIP.  IT IS ON THE SOUTH SIDE OF INTERSTATE HIGHWAY 70
 JV6064'N AND HIGHWAY RIGHT-OF-WAY.
 JV6064'
 JV6064'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 32 AND INTERSTATE
 JV6064'HIGHWAY 70 N JUST NORTH OF WEST FRIENDSHIP, GO EAST ON INTERSTATE
 JV6064'HIGHWAY 70 N FOR 1.2 MILES TO A OVERPASS BRIDGE AND THE STATION ON
 JV6064'THE RIGHT.
 JV6064'
 JV6064'THE STATION MARK IS A STANDARD REFERENCE DISK STAMPED BALTO NAT PIKE
 JV6064'NO 5-2 1971 AZ 2 1975, CEMENTED IN A DRILL HOLE IN A RETAINING WALL
 JV6064'UNDER THE OVERPASS BRIDGE ALONG THE SOUTH SIDE OF INTERSTATE
 JV6064'HIGHWAY 70N.  IT IS 41 FEET SOUTH OF THE CENTER OF THE EAST BOUND
 JV6064'LANES OF INTERSTATE HIGHWAY 70 N, 32.2 FEET EAST OF THE WEST EDGE
 JV6064'OF THE RETAINING WALL AND 20.3 FEET WEST OF THE EAST EDGE OF
 JV6064'THE RETAINING WALL.
 JV6064'
 JV6064'THIS IS THE AZIMUTH MARK FOR TRAVERSE STATION BALTO NAT PIKE NO 5-2
 JV6064'1971 AND IT WAS USED AS A TRAVERSE STATION AT THIS DATE.
 JV6064'
 JV6064'(HP 3800 EDMI).
 JV6064
 JV6064                          STATION RECOVERY (1977)
 JV6064
 JV6064'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 JV6064'THE STATION WAS RECOVERED AND FOUND IN GOOD CONDITION AS DESCRIBED IN
 JV6064'THE 1975 DESCRIPTION.  THE DISK WAS FOUND TO HAVE BEEN STAMPED IN
 JV6064'ERROR, IT WAS CHANGED TO READ BALTO NAT PIKE NO 5-2 1971 AZ 1975.
 JV6064'
 JV6064'THERE WERE NO OTHER CHANGES AT THE STATION.
 JV6064'
 JV6064'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1-1/4 MILES
 JV6064'SOUTHEAST OF SLACKS CORNER.
 JV6064
 JV6064                          STATION RECOVERY (1999)
 JV6064
 JV6064'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV6064'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0817 ***********************************************************************
 JV0817  DESIGNATION -  BALTO NAT PIKE 5 RM 2
 JV0817  PID         -  JV0817
 JV0817  STATE/COUNTY-  MD/HOWARD
 JV0817  COUNTRY     -  US
 JV0817  USGS QUAD   -  SYKESVILLE (2016)
 JV0817
 JV0817                         *CURRENT SURVEY CONTROL
 JV0817  ______________________________________________________________________
 JV0817* NAD 83(1986) POSITION- 39 18 29.57   (N) 076 56 34.38   (W)   HD_HELD1
 JV0817* NAVD 88 ORTHO HEIGHT -   189.584 (meters)      621.99  (feet) ADJUSTED
 JV0817  ______________________________________________________________________
 JV0817  GEOID HEIGHT    -        -31.968 (meters)                     GEOID18
 JV0817  DYNAMIC HEIGHT  -        189.484 (meters)      621.67  (feet) COMP
 JV0817  MODELED GRAVITY -    980,093.8   (mgal)                       NAVD 88
 JV0817
 JV0817  VERT ORDER      -  SECOND    CLASS 0
 JV0817
 JV0817.The horizontal coordinates were determined by differentially corrected
 JV0817.hand held GPS observations or other comparable positioning techniques
 JV0817.and have an estimated accuracy of +/- 3 meters.
 JV0817
 JV0817.The orthometric height was determined by differential leveling and
 JV0817.adjusted by the NATIONAL GEODETIC SURVEY
 JV0817.in June 1991.
 JV0817
 JV0817.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0817.GEOID18 height accuracy estimate available here.
 JV0817
 JV0817.Click photographs - Photos may exist for this station.
 JV0817
 JV0817.The dynamic height is computed by dividing the NAVD 88
 JV0817.geopotential number by the normal gravity value computed on the
 JV0817.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0817.degrees latitude (g = 980.6199 gals.).
 JV0817
 JV0817.The modeled gravity was interpolated from observed gravity values.
 JV0817
 JV0817;                    North         East    Units  Estimated Accuracy
 JV0817;SPC MD       -   182,223.9     404,926.2     MT  (+/- 3 meters HH1 GPS) 
 JV0817
 JV0817_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3248852779(NAD 83)
 JV0817
 JV0817                          SUPERSEDED SURVEY CONTROL
 JV0817
 JV0817  NGVD 29 (11/26/84)  189.798  (m)          622.70   (f) ADJUSTED    2 0
 JV0817
 JV0817.Superseded values are not recommended for survey control.
 JV0817
 JV0817.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0817.See file dsdata.pdf to determine how the superseded data were derived.
 JV0817
 JV0817_MARKER: DR = REFERENCE MARK DISK
 JV0817_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0817_STAMPING: BALTO NAT PIKE NO 5 NO 2 1953
 JV0817_MARK LOGO: CGS
 JV0817_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0817+STABILITY: SURFACE MOTION
 JV0817
 JV0817  HISTORY     - Date     Condition        Report By
 JV0817  HISTORY     - 1953     MONUMENTED       CGS
 JV0817  HISTORY     - 1958     GOOD             CGS
 JV0817
 JV0817                          STATION DESCRIPTION
 JV0817
 JV0817'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0817'4.7 MI E FROM COOKSVILLE.
 JV0817'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0817'COOKSVILLE, THENCE 4.4 MILES EAST ALONG U.S. HIGHWAY 40, ON
 JV0817'THE TOP OF A CUT BANK, 30.5 FEET WEST OF THE STATION, 4 FEET
 JV0817'WEST-SOUTHWEST OF A FENCE POST, 1 FOOT SOUTH OF A FENCE LINE
 JV0817'AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0819 ***********************************************************************
 JV0819  DESIGNATION -  BALTO NAT PIKE 5 RM 1
 JV0819  PID         -  JV0819
 JV0819  STATE/COUNTY-  MD/HOWARD
 JV0819  COUNTRY     -  US
 JV0819  USGS QUAD   -  SYKESVILLE (2016)
 JV0819
 JV0819                         *CURRENT SURVEY CONTROL
 JV0819  ______________________________________________________________________
 JV0819* NAD 83(1986) POSITION- 39 18 29.50   (N) 076 56 33.75   (W)   HD_HELD1
 JV0819* NAVD 88 ORTHO HEIGHT -   189.603 (meters)      622.06  (feet) ADJUSTED
 JV0819  ______________________________________________________________________
 JV0819  GEOID HEIGHT    -        -31.968 (meters)                     GEOID18
 JV0819  DYNAMIC HEIGHT  -        189.503 (meters)      621.73  (feet) COMP
 JV0819  MODELED GRAVITY -    980,093.8   (mgal)                       NAVD 88
 JV0819
 JV0819  VERT ORDER      -  SECOND    CLASS 0
 JV0819
 JV0819.The horizontal coordinates were determined by differentially corrected
 JV0819.hand held GPS observations or other comparable positioning techniques
 JV0819.and have an estimated accuracy of +/- 3 meters.
 JV0819
 JV0819.The orthometric height was determined by differential leveling and
 JV0819.adjusted by the NATIONAL GEODETIC SURVEY
 JV0819.in June 1991.
 JV0819
 JV0819.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0819.GEOID18 height accuracy estimate available here.
 JV0819
 JV0819.Click photographs - Photos may exist for this station.
 JV0819
 JV0819.The dynamic height is computed by dividing the NAVD 88
 JV0819.geopotential number by the normal gravity value computed on the
 JV0819.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0819.degrees latitude (g = 980.6199 gals.).
 JV0819
 JV0819.The modeled gravity was interpolated from observed gravity values.
 JV0819
 JV0819;                    North         East    Units  Estimated Accuracy
 JV0819;SPC MD       -   182,221.7     404,941.3     MT  (+/- 3 meters HH1 GPS) 
 JV0819
 JV0819_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3250352777(NAD 83)
 JV0819
 JV0819                          SUPERSEDED SURVEY CONTROL
 JV0819
 JV0819  NGVD 29 (11/26/84)  189.816  (m)          622.75   (f) ADJUSTED    2 0
 JV0819
 JV0819.Superseded values are not recommended for survey control.
 JV0819
 JV0819.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0819.See file dsdata.pdf to determine how the superseded data were derived.
 JV0819
 JV0819_MARKER: DR = REFERENCE MARK DISK
 JV0819_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0819_STAMPING: BALTO NAT PIKE NO 5 NO 1 1953
 JV0819_MARK LOGO: CGS
 JV0819_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0819+STABILITY: SURFACE MOTION
 JV0819
 JV0819  HISTORY     - Date     Condition        Report By
 JV0819  HISTORY     - 1953     MONUMENTED       CGS
 JV0819  HISTORY     - 1958     GOOD             CGS
 JV0819
 JV0819                          STATION DESCRIPTION
 JV0819
 JV0819'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0819'4.7 MI E FROM COOKSVILLE.
 JV0819'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0819'COOKSVILLE, THENCE 4.4 MILES EAST ALONG U.S. HIGHWAY 40, ON
 JV0819'THE TOP OF A CUT BANK, 21.8 FEET EAST OF THE STATION, 8 FEET
 JV0819'EAST OF A FENCE POST, 1 FOOT SOUTH OF A FENCE LINE AND SET IN
 JV0819'THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0821 ***********************************************************************
 JV0821  DESIGNATION -  BALTO NAT PIKE 6
 JV0821  PID         -  JV0821
 JV0821  STATE/COUNTY-  MD/HOWARD
 JV0821  COUNTRY     -  US
 JV0821  USGS QUAD   -  SYKESVILLE (2016)
 JV0821
 JV0821                         *CURRENT SURVEY CONTROL
 JV0821  ______________________________________________________________________
 JV0821* NAD 83(1991) POSITION- 39 18 18.02471(N) 076 55 09.70520(W)   ADJUSTED
 JV0821* NAVD 88 ORTHO HEIGHT -   173.420 (meters)      568.96  (feet) ADJUSTED
 JV0821  ______________________________________________________________________
 JV0821  GEOID HEIGHT    -        -32.008 (meters)                     GEOID18
 JV0821  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 JV0821  DYNAMIC HEIGHT  -        173.328 (meters)      568.66  (feet) COMP
 JV0821  MODELED GRAVITY -    980,094.2   (mgal)                       NAVD 88
 JV0821
 JV0821  HORZ ORDER      -  SECOND
 JV0821  VERT ORDER      -  SECOND    CLASS 0
 JV0821
 JV0821.The horizontal coordinates were established by classical geodetic methods
 JV0821.and adjusted by the National Geodetic Survey in January 1992.
 JV0821
 JV0821.The orthometric height was determined by differential leveling and
 JV0821.adjusted by the NATIONAL GEODETIC SURVEY
 JV0821.in June 1991.
 JV0821
 JV0821.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0821.GEOID18 height accuracy estimate available here.
 JV0821
 JV0821.Click photographs - Photos may exist for this station.
 JV0821
 JV0821.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0821
 JV0821.The dynamic height is computed by dividing the NAVD 88
 JV0821.geopotential number by the normal gravity value computed on the
 JV0821.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0821.degrees latitude (g = 980.6199 gals.).
 JV0821
 JV0821.The modeled gravity was interpolated from observed gravity values.
 JV0821
 JV0821. The following values were computed from the NAD 83(1991) position.
 JV0821
 JV0821;                    North         East     Units Scale Factor Converg.
 JV0821;SPC MD       -   181,869.387   406,955.087   MT  0.99997785   +0 03 02.2
 JV0821;SPC MD       -   596,683.15  1,335,151.81   sFT  0.99997785   +0 03 02.2
 JV0821;UTM  18      - 4,352,380.638   334,508.761   MT  0.99993722   -1 12 57.9
 JV0821
 JV0821!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0821!SPC MD       -   0.99997781  x   0.99997785  =   0.99995566
 JV0821!UTM  18      -   0.99997781  x   0.99993722  =   0.99991504
 JV0821
 JV0821:                Primary Azimuth Mark                     Grid Az
 JV0821:SPC MD       -  BALTO NAT PIKE 6 AZ MK                   281 22 52.0
 JV0821:UTM  18      -  BALTO NAT PIKE 6 AZ MK                   282 38 52.1
 JV0821
 JV0821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3450852380(NAD 83)
 JV0821
 JV0821|---------------------------------------------------------------------|
 JV0821| PID    Reference Object                     Distance      Geod. Az  |
 JV0821|                                                           dddmmss.s |
 JV0821| JV0822 BALTO NAT PIKE 6 RM 1                 9.052 METERS 09915     |
 JV0821| JV0820 BALTO NAT PIKE 6 RM 2                 9.870 METERS 27450     |
 JV0821| CA9942 BALTO NAT PIKE 6 AZ MK                             2812554.2 |
 JV0821|---------------------------------------------------------------------|
 JV0821
 JV0821                          SUPERSEDED SURVEY CONTROL
 JV0821
 JV0821  NAD 83(1986)-  39 18 18.02326(N)    076 55 09.71376(W) AD(       ) 2
 JV0821  NAD 27      -  39 18 17.64409(N)    076 55 10.79448(W) AD(       ) 2
 JV0821  NGVD 29             173.63   (m)          569.7    (f) LEVELING    3  
 JV0821  NGVD 29 (11/26/84)  173.634  (m)          569.66   (f) ADJUSTED    2 0
 JV0821
 JV0821.Superseded values are not recommended for survey control.
 JV0821
 JV0821.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0821.See file dsdata.pdf to determine how the superseded data were derived.
 JV0821
 JV0821_MARKER: DS = TRIANGULATION STATION DISK
 JV0821_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0821_STAMPING: BALTO NAT PIKE NO 6 1953
 JV0821_MARK LOGO: CGS
 JV0821_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0821+STABILITY: SURFACE MOTION
 JV0821
 JV0821  HISTORY     - Date     Condition        Report By
 JV0821  HISTORY     - 1958     MONUMENTED       MDBCSM
 JV0821  HISTORY     - 1958     GOOD             CGS
 JV0821  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV0821
 JV0821                          STATION DESCRIPTION
 JV0821
 JV0821'DESCRIBED BY MD BUR SURV AND MAPS 1958 (JCE)
 JV0821'STATION IS LOCATED ON TOP OF A CUT EMBANKMENT ALONG THE SOUTH
 JV0821'SIDE OF U.S. HIGHWAY NO. 40, ABOUT 7-1/2 MILES WEST-NORTHWEST
 JV0821'OF ELLICOTT CITY, ABOUT 5-1/2 MILES SOUTH-SOUTHEAST OF SYKESVILLE
 JV0821'AND ABOUT 1.75 MILES EAST OF THE JUNCTION OF U.S. HIGHWAY NO. 40
 JV0821'AND STATE HIGHWAY NO. 32.  STATION IS A MARYLAND BUREAU OF
 JV0821'CONTROL SURVEY DISK SET IN A 8X8 INCH CONCRETE MONUMENT, 53
 JV0821'FEET SOUTH-SOUTHWEST OF APPROXIMATE CENTERLINE OF U.S. HIGHWAY
 JV0821'NO. 40 AND 10 FEET SOUTH-SOUTHWEST OF FENCE LINE.  THE MARK
 JV0821'PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED BALTO. NAT
 JV0821'PIKE NO. 6 1953.
 JV0821'
 JV0821'REFERENCE MARK NO. 1 IS 54 FEET SOUTH-SOUTHWEST OF APPROXIMATE
 JV0821'CENTERLINE OF U.S. HIGHWAY NO. 40 AND 10 FEET NORTH-NORTHEAST OF
 JV0821'FENCELINE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED
 JV0821'BALTO. NAT. PIKE NO. 6 NO 1 1953.
 JV0821'
 JV0821'REFERENCE MARK NO. 2 IS 55 FEET SOUTH-SOUTHWEST OF APPROXIMATE
 JV0821'CENTERLINE OF U.S. HIGHWAY NO. 40 AND 8-1/2 FEET NORTH-NORTHEAST
 JV0821'OF FENCELINE.  THE MARK PROJECTS 2 INCHES AND THE DISK IS STAMPED
 JV0821'BALTO. NAT. PIKE NO. 6 NO 2 1953.
 JV0821'
 JV0821'AZIMUTH MARK IS 27 FEET NORTH-NORTHEAST OF APPROXIMATE CENTERLINE
 JV0821'OF U.S. HIGHWAY NO. 40, 6 FEET NORTH NORTHEAST OF GUARD FENCE
 JV0821'AND 23 FEET EAST OF WEST GUARD POST.  THE MARK IS SET FLUSH AND THE
 JV0821'DISK IS STAMPED BALTO. NAT. PIKE NO. 6 1958.
 JV0821'
 JV0821'TO REACH FROM THE JUNCTION OF U.S. HIGHWAYS NO. 40 AND 29 WHICH
 JV0821'IS ABOUT 1.0 MILE NORTH OF ELLICOTT CITY, GO WESTERLY ON
 JV0821'U.S. HIGHWAY NO. 40 FOR 5.95 MILES TO SUMMIT OF GRADE IN LONG CURVE
 JV0821'AND STATION ON LEFT (SOUTH) SIDE OF HIGHWAY AS DESCRIBED.
 JV0821'CONTINUE WESTERLY ON U.S. HIGHWAY NO. 40 FOR 0.5 MILE TO END OF
 JV0821'GUARD FENCE ON RIGHT AND AZIMUTH MARK ON RIGHT (NORTH) SIDE
 JV0821'OF HIGHWAY AS DESCRIBED.
 JV0821'
 JV0821'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV0821
 JV0821                          STATION RECOVERY (1958)
 JV0821
 JV0821'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV0821'6 MI E FROM COOKSVILLE.
 JV0821'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0821'COOKSVILLE, THENCE 5.7 MILES EAST ALONG U.S. HIGHWAY 40, ABOUT
 JV0821'1.8 MILES EAST OF THE JUNCTION OF STATE HIGHWAY 28 AND U.S.
 JV0821'HIGHWAY 40, ON THE TOP OF A HIGH CUT BANK, 53 FEET SOUTH OF THE
 JV0821'CENTER LINE OF THE EAST BOUND LANE, 10 FEET NORTH OF A FENCE
 JV0821'LINE, SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES ABOVE
 JV0821'THE GROUND AND ABOUT 20 FEET ABOVE THE LEVEL OF THE HIGHWAY.
 JV0821
 JV0821                          STATION RECOVERY (1975)
 JV0821
 JV0821'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV0821'A SEARCH WAS MADE FOR THE STATION AND NO MARKS WERE FOUND.  IT
 JV0821'IS BELIEVED ALL MARKS WERE DESTROYED BY CONSTRUCTION ALONG
 JV0821'INTERSTATE HIGHWAY 70 N.  A NEW TRAVERSE STATION BALTO NAT PIKE
 JV0821'NO 7 AZ 2 WAS ESTABLISHED AT THIS DATE IN THE AREA OF THE OLD
 JV0821'POINT.
 JV0821'
 JV0821'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV0821'1-3/4 MILES ESE OF SLACKS CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0820 ***********************************************************************
 JV0820  DESIGNATION -  BALTO NAT PIKE 6 RM 2
 JV0820  PID         -  JV0820
 JV0820  STATE/COUNTY-  MD/HOWARD
 JV0820  COUNTRY     -  US
 JV0820  USGS QUAD   -  SYKESVILLE (2016)
 JV0820
 JV0820                         *CURRENT SURVEY CONTROL
 JV0820  ______________________________________________________________________
 JV0820* NAD 83(1986) POSITION- 39 18 18.05   (N) 076 55 10.12   (W)   HD_HELD1
 JV0820* NAVD 88 ORTHO HEIGHT -   173.700 (meters)      569.88  (feet) ADJUSTED
 JV0820  ______________________________________________________________________
 JV0820  GEOID HEIGHT    -        -32.008 (meters)                     GEOID18
 JV0820  DYNAMIC HEIGHT  -        173.608 (meters)      569.58  (feet) COMP
 JV0820  MODELED GRAVITY -    980,094.1   (mgal)                       NAVD 88
 JV0820
 JV0820  VERT ORDER      -  SECOND    CLASS 0
 JV0820
 JV0820.The horizontal coordinates were determined by differentially corrected
 JV0820.hand held GPS observations or other comparable positioning techniques
 JV0820.and have an estimated accuracy of +/- 3 meters.
 JV0820
 JV0820.The orthometric height was determined by differential leveling and
 JV0820.adjusted by the NATIONAL GEODETIC SURVEY
 JV0820.in June 1991.
 JV0820
 JV0820.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0820.GEOID18 height accuracy estimate available here.
 JV0820
 JV0820.Click photographs - Photos may exist for this station.
 JV0820
 JV0820.The dynamic height is computed by dividing the NAVD 88
 JV0820.geopotential number by the normal gravity value computed on the
 JV0820.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0820.degrees latitude (g = 980.6199 gals.).
 JV0820
 JV0820.The modeled gravity was interpolated from observed gravity values.
 JV0820
 JV0820;                    North         East    Units  Estimated Accuracy
 JV0820;SPC MD       -   181,870.2     406,945.1     MT  (+/- 3 meters HH1 GPS) 
 JV0820
 JV0820_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3449852381(NAD 83)
 JV0820
 JV0820                          SUPERSEDED SURVEY CONTROL
 JV0820
 JV0820  NGVD 29 (11/26/84)  173.915  (m)          570.59   (f) ADJUSTED    2 0
 JV0820
 JV0820.Superseded values are not recommended for survey control.
 JV0820
 JV0820.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0820.See file dsdata.pdf to determine how the superseded data were derived.
 JV0820
 JV0820_MARKER: DS = TRIANGULATION STATION DISK
 JV0820_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0820_STAMPING: BALTO NAT PIKE NO 6 NO 2 1953
 JV0820_MARK LOGO: CGS
 JV0820_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0820+STABILITY: SURFACE MOTION
 JV0820
 JV0820  HISTORY     - Date     Condition        Report By
 JV0820  HISTORY     - 1953     MONUMENTED       CGS
 JV0820  HISTORY     - 1958     GOOD             CGS
 JV0820
 JV0820                          STATION DESCRIPTION
 JV0820
 JV0820'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0820'6 MI E FROM COOKSVILLE.
 JV0820'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0820'COOKSVILLE, THENCE 5.7 MILES EAST ALONG U.S. HIGHWAY 40, ON THE
 JV0820'TOP OF A HIGH CUT BANK, 32.4 FEET WEST OF THE STATION, 55 FEET
 JV0820'SOUTH OF THE CENTER LINE OF THE EAST BOUND LANE, 8 1/2 FEET NORTH
 JV0820'OF A FENCE LINE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV0820'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0822 ***********************************************************************
 JV0822  DESIGNATION -  BALTO NAT PIKE 6 RM 1
 JV0822  PID         -  JV0822
 JV0822  STATE/COUNTY-  MD/HOWARD
 JV0822  COUNTRY     -  US
 JV0822  USGS QUAD   -  SYKESVILLE (2016)
 JV0822
 JV0822                         *CURRENT SURVEY CONTROL
 JV0822  ______________________________________________________________________
 JV0822* NAD 83(1986) POSITION- 39 18 17.98   (N) 076 55 09.33   (W)   HD_HELD1
 JV0822* NAVD 88 ORTHO HEIGHT -   172.998 (meters)      567.58  (feet) ADJUSTED
 JV0822  ______________________________________________________________________
 JV0822  GEOID HEIGHT    -        -32.008 (meters)                     GEOID18
 JV0822  DYNAMIC HEIGHT  -        172.906 (meters)      567.28  (feet) COMP
 JV0822  MODELED GRAVITY -    980,094.1   (mgal)                       NAVD 88
 JV0822
 JV0822  VERT ORDER      -  SECOND    CLASS 0
 JV0822
 JV0822.The horizontal coordinates were determined by differentially corrected
 JV0822.hand held GPS observations or other comparable positioning techniques
 JV0822.and have an estimated accuracy of +/- 3 meters.
 JV0822
 JV0822.The orthometric height was determined by differential leveling and
 JV0822.adjusted by the NATIONAL GEODETIC SURVEY
 JV0822.in June 1991.
 JV0822
 JV0822.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0822.GEOID18 height accuracy estimate available here.
 JV0822
 JV0822.Click photographs - Photos may exist for this station.
 JV0822
 JV0822.The dynamic height is computed by dividing the NAVD 88
 JV0822.geopotential number by the normal gravity value computed on the
 JV0822.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0822.degrees latitude (g = 980.6199 gals.).
 JV0822
 JV0822.The modeled gravity was interpolated from observed gravity values.
 JV0822
 JV0822;                    North         East    Units  Estimated Accuracy
 JV0822;SPC MD       -   181,868.0     406,964.1     MT  (+/- 3 meters HH1 GPS) 
 JV0822
 JV0822_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3451752379(NAD 83)
 JV0822
 JV0822                          SUPERSEDED SURVEY CONTROL
 JV0822
 JV0822  NGVD 29 (11/26/84)  173.212  (m)          568.28   (f) ADJUSTED    2 0
 JV0822
 JV0822.Superseded values are not recommended for survey control.
 JV0822
 JV0822.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0822.See file dsdata.pdf to determine how the superseded data were derived.
 JV0822
 JV0822_MARKER: DR = REFERENCE MARK DISK
 JV0822_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0822_STAMPING: BALTO NAT PIKE NO 6 NO 1 1953
 JV0822_MARK LOGO: CGS
 JV0822_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0822+STABILITY: SURFACE MOTION
 JV0822
 JV0822  HISTORY     - Date     Condition        Report By
 JV0822  HISTORY     - 1953     MONUMENTED       CGS
 JV0822  HISTORY     - 1958     GOOD             CGS
 JV0822
 JV0822                          STATION DESCRIPTION
 JV0822
 JV0822'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0822'6 MI E FROM COOKSVILLE.
 JV0822'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0822'COOKSVILLE, THENCE 5.7 MILES EAST ALONG U.S. HIGHWAY 40, ON THE
 JV0822'TOP OF A HIGH CUT BANK, 29.7 FEET EAST OF THE STATION, 54 FEET
 JV0822'SOUTH OF THE CENTER LINE OF THE EAST BOUND LANE, 10 FEET NORTH OF
 JV0822'A FENCE LINE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 JV0822'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0823 ***********************************************************************
 JV0823  DESIGNATION -  BALTO NAT PIKE 7
 JV0823  PID         -  JV0823
 JV0823  STATE/COUNTY-  MD/HOWARD
 JV0823  COUNTRY     -  US
 JV0823  USGS QUAD   -  SYKESVILLE (2016)
 JV0823
 JV0823                         *CURRENT SURVEY CONTROL
 JV0823  ______________________________________________________________________
 JV0823* NAD 83(1991) POSITION- 39 18 08.21106(N) 076 54 39.88757(W)   ADJUSTED
 JV0823* NAVD 88 ORTHO HEIGHT -   156.606 (meters)      513.80  (feet) ADJUSTED
 JV0823  ______________________________________________________________________
 JV0823  GEOID HEIGHT    -        -32.024 (meters)                     GEOID18
 JV0823  LAPLACE CORR    -         -3.49  (seconds)                    DEFLEC18
 JV0823  DYNAMIC HEIGHT  -        156.523 (meters)      513.53  (feet) COMP
 JV0823  MODELED GRAVITY -    980,095.5   (mgal)                       NAVD 88
 JV0823
 JV0823  HORZ ORDER      -  SECOND
 JV0823  VERT ORDER      -  SECOND    CLASS I
 JV0823
 JV0823.The horizontal coordinates were established by classical geodetic methods
 JV0823.and adjusted by the National Geodetic Survey in January 1992.
 JV0823
 JV0823.The orthometric height was determined by differential leveling and
 JV0823.adjusted by the NATIONAL GEODETIC SURVEY
 JV0823.in June 1991.
 JV0823
 JV0823.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0823.GEOID18 height accuracy estimate available here.
 JV0823
 JV0823.Click photographs - Photos may exist for this station.
 JV0823
 JV0823.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0823
 JV0823.The dynamic height is computed by dividing the NAVD 88
 JV0823.geopotential number by the normal gravity value computed on the
 JV0823.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0823.degrees latitude (g = 980.6199 gals.).
 JV0823
 JV0823.The modeled gravity was interpolated from observed gravity values.
 JV0823
 JV0823. The following values were computed from the NAD 83(1991) position.
 JV0823
 JV0823;                    North         East     Units Scale Factor Converg.
 JV0823;SPC MD       -   181,567.412   407,669.774   MT  0.99997750   +0 03 20.9
 JV0823;SPC MD       -   595,692.42  1,337,496.58   sFT  0.99997750   +0 03 20.9
 JV0823;UTM  18      - 4,352,062.951   335,216.568   MT  0.99993434   -1 12 38.8
 JV0823
 JV0823!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0823!SPC MD       -   0.99998045  x   0.99997750  =   0.99995796
 JV0823!UTM  18      -   0.99998045  x   0.99993434  =   0.99991480
 JV0823
 JV0823:                Primary Azimuth Mark                     Grid Az
 JV0823:SPC MD       -  BALTO NAT PIKE 7 AZ MK 2                 299 10 01.5
 JV0823:UTM  18      -  BALTO NAT PIKE 7 AZ MK 2                 300 26 01.2
 JV0823
 JV0823_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3521652062(NAD 83)
 JV0823
 JV0823|---------------------------------------------------------------------|
 JV0823| PID    Reference Object                     Distance      Geod. Az  |
 JV0823|                                                           dddmmss.s |
 JV0823| JV0825 BALTO NAT PIKE 7 RM 2                 9.312 METERS 05955     |
 JV0823| CA9947 BALTO NAT PIKE 7 RM 3                 7.180 METERS 12934     |
 JV0823| JV0821 BALTO NAT PIKE 6                                   22320     |
 JV0823| JV6063 BALTO NAT PIKE 7 AZ MK 2            APPROX. 0.7 KM 2991322.4 |
 JV0823| JV0824 BALTO NAT PIKE 7 RM 1                 8.964 METERS 32913     |
 JV0823|---------------------------------------------------------------------|
 JV0823
 JV0823                          SUPERSEDED SURVEY CONTROL
 JV0823
 JV0823  NAD 83(1986)-  39 18 08.20940(N)    076 54 39.89583(W) AD(       ) 2
 JV0823  NAD 27      -  39 18 07.83030(N)    076 54 40.97837(W) AD(       ) 2
 JV0823  NGVD 29             156.82   (m)          514.5    (f) LEVELING    3  
 JV0823  NGVD 29 (11/26/84)  156.821  (m)          514.50   (f) ADJUSTED    2 0
 JV0823
 JV0823.Superseded values are not recommended for survey control.
 JV0823
 JV0823.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0823.See file dsdata.pdf to determine how the superseded data were derived.
 JV0823
 JV0823_MARKER: DD = SURVEY DISK
 JV0823_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0823_STAMPING: BALTO NAT PIKE NO 7 1953
 JV0823_MARK LOGO: MDBCSM
 JV0823_PROJECTION: RECESSED
 JV0823_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0823+STABILITY: SURFACE MOTION
 JV0823_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0823+SATELLITE: SATELLITE OBSERVATIONS - May 25, 2007
 JV0823
 JV0823  HISTORY     - Date     Condition        Report By
 JV0823  HISTORY     - 1958     MONUMENTED       MDBCSM
 JV0823  HISTORY     - 1958     GOOD             CGS
 JV0823  HISTORY     - 1975     GOOD             NGS
 JV0823  HISTORY     - 20070525 GOOD             MDSHA
 JV0823
 JV0823                          STATION DESCRIPTION
 JV0823
 JV0823'DESCRIBED BY MD BUR SURV AND MAPS 1958 (JCE)
 JV0823'STATION IS LOCATED ALONG THE NORTH SIDE OF U.S. HIGHWAY 40
 JV0823'ABOUT 2.2 MILES WEST OF PINE ORCHARD, ABOUT 0.7 MILE WEST OF
 JV0823'MARRIOTTSVILLE ROAD AND ON TOP OF A 10 FOOT CUT
 JV0823'EMBANKMENT.  STATION IS 60 FEET NORTH OF APPROXIMATE CENTERLINE OF
 JV0823'WEST BOUND TRAFFIC LANE OF U.S. HIGHWAY NO. 40 AND 2 FEET NORTH
 JV0823'EAST OF A WITNESS POST.  THE MARK IS A STANDARD MARYLAND BUREAU
 JV0823'OF CONTROL SURVEY DISK SET IN A SQUARE CONCRETE MONUMENT, FLUSH
 JV0823'WITH THE GROUND AND THE DISK IS STAMPED BALTO. NAT. PIKE NO 7
 JV0823'1953.
 JV0823'
 JV0823'REFERENCE MARK NO. 1 IS 33 FEET WEST OF WEST EDGE OF WOODS.  THE
 JV0823'MARK IS A STANDARD REFERENCE MARK DISK SET IN A 12X12 INCH
 JV0823'CONCRETE MONUMENT, FLUSH WITH THE GROUND AND THE DISK IS
 JV0823'STAMPED BALTO. NAT. PIKE NO. 7 NO 1 1953.
 JV0823'
 JV0823'REFERENCE MARK NO. 2 IS 58 FEET NORTH OF APPROXIMATE CENTERLINE
 JV0823'OF WEST BOUND TRAFFIC LANE OF U.S. HIGHWAY NO. 40, 5 FEET NORTH
 JV0823'OF NORTH EDGE OF CUT EMBANKMENT AND 16 FEET WEST OF WEST EDGE
 JV0823'OF WOODS.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN
 JV0823'A 12 X 12 INCH MONUMENT, FLUSH WITH THE GROUND AND THE DISK IS
 JV0823'STAMPED BALTO. NAT PIKE NO. 7 NO. 2 1953.
 JV0823'
 JV0823'TO REACH FROM THE JUNCTION OF U.S. HIGHWAYS NO. 40 AND 29, GO
 JV0823'WESTERLY ON U.S. HIGHWAY NO. 40 FOR 4.75 MILE TO CROSSROADS
 JV0823'MARRIOTTSVILLE ROAD, CONTINUE WESTERLY ON U.S. HIGHWAY NO. 40
 JV0823'FOR 0.7 MILE TO STATION ON RIGHT (NORTH) SIDE OF HIGHWAY ON TOP
 JV0823'OF A 10 FOOT CUT EMBANKMENT.
 JV0823'
 JV0823'BALTO. NAT PIKE NO 6 WOULD BE VISIBLE FROM GROUND WITH A SMALL
 JV0823'AMOUNT OF CLEARING.
 JV0823'
 JV0823'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV0823
 JV0823                          STATION RECOVERY (1958)
 JV0823
 JV0823'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV0823'6.5 MI E FROM COOKSVILLE.
 JV0823'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0823'COOKSVILLE, THENCE 6.2 MILES EAST ALONG U.S. HIGHWAY 40, ABOUT
 JV0823'0.7 MILE WEST OF THE INTERSECTION OF U.S. HIGHWAY 40 AND THE
 JV0823'MARRIOTSVILLE ROAD, ON THE TOP OF A CUT BANK, 60 FEET NORTH OF
 JV0823'THE CENTER LINE OF THE WEST BOUND LANE, 45 FEET WEST OF THE WEST
 JV0823'EDGE OF A WOODED AREA, 2 FEET EAST OF A WHITE WOODEN WITNESS
 JV0823'POST, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND
 JV0823'AND ABOUT 20 FEET ABOVE THE LEVEL OF THE HIGHWAY.
 JV0823
 JV0823                          STATION RECOVERY (1975)
 JV0823
 JV0823'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV0823'UNABLE TO MEASURE BETWEEN RMS.
 JV0823'
 JV0823'THE STATION MARK AND REFERENCE MARK 2 WERE RECOVERED AND FOUND IN
 JV0823'GOOD CONDITION.  REFERENCE MARK 1 WAS NOT FOUND AND BELIEVED
 JV0823'DESTROYED BY CONSTRUCTION ALONG INTERSTATE HIGHWAY 70 N.  A
 JV0823'NEW REFERENCE MARK 3 AND A NEW AZIMUTH MARK WERE ESTABLISHED
 JV0823'AT THIS DATE.  A POLARIS AZIMUTH WAS OBSERVED TO ESTABLISH A
 JV0823'AZIMUTH TO THE AZIMUTH MARK.  THE AZIMUTH MARK WAS ALSO USED AS
 JV0823'A TRAVERSE STATION ALONG THE BALTIMORE NATIONAL PIKE.
 JV0823'
 JV0823'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV0823'
 JV0823'THE STATION IS LOCATED 5-1/2 MILES WEST OF ELLICOTT CITY, 3/4
 JV0823'MILE WEST OF MARRIOTTSVILLE AND AT A POINT WHERE U.S. HIGHWAY 40
 JV0823'AND INTERSTATE HIGHWAY 70 N MERGES.  IT IS IN A ISLAND ALONG
 JV0823'THE SOUTH SIDE OF INTERSTATE HIGHWAY 70 BETWEEN THE OVERPASS
 JV0823'BRIDGE FOR THE WEST BOUND LANE OF U.S. HIGHWAY 40 WHERE IT JOINS
 JV0823'70 N AND WHERE THE EAST BOUND LANE LEAVES 70 N.
 JV0823'
 JV0823'THE LOCATION OF THIS STATION IS ADEQUATE TO FIND IT, NO TO
 JV0823'REACH IS NECESSARY.
 JV0823'
 JV0823'THE STATION MARK IS A MARYLAND BUREAU OF CONTROL SURVEY DISK
 JV0823'STAMPED BALTO. NAT. PIKE NO 7 1953, SET IN THE TOP OF A 10-INCH
 JV0823'SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE.  IT IS
 JV0823'75 YARDS EAST OF THE POINT WHERE U.S. HIGHWAY 40 LEAVES I 70 N,
 JV0823'75 YARDS WEST OF THE OVERPASS BRIDGE OF U.S. HIGHWAY 40 WHERE
 JV0823'IT CROSSES I 70 N, 75 FEET SOUTH AND 30 FEET HIGHER THAN THE
 JV0823'EAST BOUND LANE OF I 70 N, 4 FEET NORTH OF THE NORTH EDGE OF A
 JV0823'SMALL WOODED AREA AND 2.5 FEET EAST OF A WITNESS POST.
 JV0823'
 JV0823'REFERENCE MARK 2 IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 7
 JV0823'NO 2 1953, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT
 JV0823'WHICH PROJECTS 1 INCH.  IT IS 100 FEET SOUTH OF I 70 N, 28 FEET
 JV0823'EAST OF THE WITNESS POST AND 10 FEET SOUTH OF THE NORTH EDGE
 JV0823'OF THE WOODED AREA.
 JV0823'
 JV0823'REFERENCE MARK 3 IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 7
 JV0823'1953 NO 3 1975, SET IN THE TOP OF A 10-INCH ROUND CONCRETE
 JV0823'MONUMENT WHICH PROJECTS 1 INCH.  IT IS 60 FEET SOUTH OF I 70 N,
 JV0823'23.5 FEET NORTHEAST OF THE WITNESS POST AND 15 FEET NORTH OF THE
 JV0823'NORTH EDGE OF THE WOODED AREA.
 JV0823'
 JV0823'THE AZIMUTH MARK IS A STANDARD DISK STAMPED BALTO NAT PIKE NO 7
 JV0823'1953 AZ 2 1975, SET IN THE TOP OF A 10-INCH ROUND CONCRETE
 JV0823'MONUMENT WHICH PROJECTS 1-INCH.  IT IS 68 FEET NORTH OF THE MOST
 JV0823'WESTERLY POINT OF THE GRASS COVERED ISLAND BETWEEN THE ENTRANCE
 JV0823'RAMP FOR U.S. HIGHWAY 40 AND THE WEST BOUND LANE OF INTERSTATE
 JV0823'HIGHWAY 70 N, 51 FEET NORTH OF THE CENTER OF THE WEST BOUND LANE
 JV0823'OF INTERSTATE HIGHWAY 40, 34 FEET SOUTH OF THE NORTH
 JV0823'RIGHT-OF-WAY FENCE AND 2.8 FEET NORTH OF A WITNESS POST.
 JV0823'
 JV0823'TO REACH THE AZIMUTH MARK FROM THE STATION, GO WESTERLY ON
 JV0823'U.S. HIGHWAY 40 FOR 0.45 MILE TO THE MARK ON THE RIGHT, JUST
 JV0823'BEFORE JOINING INTERSTATE HIGHWAY 70 N.
 JV0823'
 JV0823'REFERENCE MARK 3 AND THE AZIMUTH MARK WERE STAMPED TO MATCH THE
 JV0823'STAMPING ON THE OTHER DISKS.
 JV0823'
 JV0823'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV0823'3/4 MILES WEST OF MARRIOTTSVILLE.
 JV0823
 JV0823                          STATION RECOVERY (2007)
 JV0823
 JV0823'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV0823'RECOVERED IN GOOD CONDITION.  NOTE--THE STATION IS NOW 175 YARDS
 JV0823'(160.0 M) EAST OF THE EASTBOUND INTERSTATE 70 AND EASTBOUND US HIGHWAY
 JV0823'40 SPLIT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6063 ***********************************************************************
 JV6063  DESIGNATION -  BALTO NAT PIKE 7 AZ MK 2
 JV6063  PID         -  JV6063
 JV6063  STATE/COUNTY-  MD/HOWARD
 JV6063  COUNTRY     -  US
 JV6063  USGS QUAD   -  SYKESVILLE (2016)
 JV6063
 JV6063                         *CURRENT SURVEY CONTROL
 JV6063  ______________________________________________________________________
 JV6063* NAD 83(1991) POSITION- 39 18 19.83912(N) 076 55 06.64512(W)   ADJUSTED
 JV6063* NAVD 88 ORTHO HEIGHT -   172.1   (meters)      565.    (feet) VERTCON3
 JV6063  ______________________________________________________________________
 JV6063  GEOID HEIGHT    -        -32.009 (meters)                     GEOID18
 JV6063  LAPLACE CORR    -         -3.44  (seconds)                    DEFLEC18
 JV6063  HORZ ORDER      -  SECOND
 JV6063
 JV6063.The horizontal coordinates were established by classical geodetic methods
 JV6063.and adjusted by the National Geodetic Survey in January 1992.
 JV6063
 JV6063.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6063.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6063
 JV6063.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6063.GEOID18 height accuracy estimate available here.
 JV6063
 JV6063.Click photographs - Photos may exist for this station.
 JV6063
 JV6063.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6063
 JV6063. The following values were computed from the NAD 83(1991) position.
 JV6063
 JV6063;                    North         East     Units Scale Factor Converg.
 JV6063;SPC MD       -   181,925.406   407,028.353   MT  0.99997792   +0 03 04.1
 JV6063;SPC MD       -   596,866.94  1,335,392.19   sFT  0.99997792   +0 03 04.1
 JV6063;UTM  18      - 4,352,435.021   334,583.244   MT  0.99993691   -1 12 56.0
 JV6063
 JV6063!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6063!SPC MD       -   0.99997802  x   0.99997792  =   0.99995594
 JV6063!UTM  18      -   0.99997802  x   0.99993691  =   0.99991494
 JV6063
 JV6063:                Primary Azimuth Mark                     Grid Az
 JV6063:SPC MD       -  BALTO NAT PIKE 7                         119 10 01.3
 JV6063:UTM  18      -  BALTO NAT PIKE 7                         120 26 01.4
 JV6063
 JV6063_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3458352435(NAD 83)
 JV6063
 JV6063|---------------------------------------------------------------------|
 JV6063| PID    Reference Object                     Distance      Geod. Az  |
 JV6063|                                                           dddmmss.s |
 JV6063| JV0823 BALTO NAT PIKE 7                    APPROX. 0.7 KM 1191305.4 |
 JV6063|---------------------------------------------------------------------|
 JV6063
 JV6063                          SUPERSEDED SURVEY CONTROL
 JV6063
 JV6063  NAD 83(1986)-  39 18 19.83733(N)    076 55 06.65342(W) AD(       ) 2
 JV6063  NAD 27      -  39 18 19.45863(N)    076 55 07.73501(W) AD(       ) 2
 JV6063  NGVD 29 (07/19/86)  172.3    (m)          565.     (f) VERT ANG       
 JV6063
 JV6063.Superseded values are not recommended for survey control.
 JV6063
 JV6063.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6063.See file dsdata.pdf to determine how the superseded data were derived.
 JV6063
 JV6063_MARKER: DR = REFERENCE MARK DISK
 JV6063_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6063_STAMPING: BALTON NAT PIKE NO 7 1953 AZ 2 1975
 JV6063_MARK LOGO: NGS
 JV6063_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6063+STABILITY: SURFACE MOTION
 JV6063
 JV6063  HISTORY     - Date     Condition        Report By
 JV6063  HISTORY     - 1975     MONUMENTED       NGS
 JV6063  HISTORY     - 1977     GOOD             NGS
 JV6063  HISTORY     - 19990114 MARK NOT FOUND   MDSHA
 JV6063
 JV6063                          STATION DESCRIPTION
 JV6063
 JV6063'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV6063'THE STATION IS LOCATED ABOUT 15-1/2 MILES WEST OF BALTIMORE, 1-3/4
 JV6063'MILES EAST-SOUTHEAST OF SLACKS CORNER AND 1/2 MILE NORTHWEST OF A
 JV6063'POINT WHERE U.S. HIGHWAY 40 JOINS INTERSTATE HIGHWAY 70 N.  IT IS
 JV6063'ON THE NORTH SIDE OF THE HIGHWAY.
 JV6063'
 JV6063'TO REACH FROM THE POINT WHERE U. S. HIGHWAY 40 CROSSES OVER
 JV6063'INTERSTATE HIGHWAY 70 N ON THE WEST BOUND LANE OF U. S. HIGHWAY 40,
 JV6063'GO WESTERLY ON THE ENTRANCE RAMP OF U. S. HIGHWAY 40 FOR 0.45 MILE
 JV6063'TO THE END OF THE GRASS COVERED ISLAND ON THE LEFT AND THE STATION
 JV6063'ON THE RIGHT ON THE TOP OF A CUTBANK.
 JV6063'
 JV6063'THE STATION MARK IS A STANDARD REFERENCE DISK STAMPED BALTO NAT PIKE
 JV6063'NO 7 1953 AZ 2 1975, SET IN THE TOP OF A 10-INCH ROUND CONCRETE
 JV6063'MONUMENT WHICH PROJECTS 1 INCH.  IT IS 68 FEET NORTH OF THE MOST
 JV6063'WESTERLY POINT OF THE GRASS COVERED ISLAND
 JV6063'BETWEEN THE ENTRANCE RAMP FOR U.S. HIGHWAY 40
 JV6063'AND THE WEST BOUND LANE OF INTERSTATE HIGHWAY 70 N,
 JV6063'51 FEET NORTH OF THE CENTER OF THE WEST BOUND LANE OF U. S.
 JV6063'HIGHWAY 40, 34 FEET SOUTH OF THE NORTH RIGHT-WAY-FENCE AND 2.8
 JV6063'FEET NORTH OF A WITNESS POST.
 JV6063'
 JV6063'THIS IS THE AZIMUTH MARK FOR TRAVERSE STATION BALTO NAT PIKE NO 7
 JV6063'1958 AND IT WAS USED AS A TRAVERSE STATION AT THIS DATE.
 JV6063'
 JV6063'(HP 3800 EDMI).
 JV6063
 JV6063                          STATION RECOVERY (1977)
 JV6063
 JV6063'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 JV6063'THE STATION WAS RECOVERED AND FOUND IN GOOD CONDITION AS DESCRIBED IN
 JV6063'THE 1975 DESCRIPTION.  THE MARK WAS FOUND TO BE STAMPED IN ERROR, IT
 JV6063'WAS CHANGED TO READ BALTO NAT PIKE NO 7 1953 AZ 1975.
 JV6063'
 JV6063'THERE ARE NO OTHER CHANGES AT THIS STATION.
 JV6063'
 JV6063'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1 MILE WEST OF
 JV6063'MARRIOTTSVILLE.
 JV6063
 JV6063                          STATION RECOVERY (1999)
 JV6063
 JV6063'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV6063'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE AREA DOES NOT
 JV6063'APPEAR TO HAVE BEEN CHANGED AND THE METAL WITNESS POST WAS FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0824 ***********************************************************************
 JV0824  DESIGNATION -  BALTO NAT PIKE 7 RM 1
 JV0824  PID         -  JV0824
 JV0824  STATE/COUNTY-  MD/HOWARD
 JV0824  COUNTRY     -  US
 JV0824  USGS QUAD   -  SYKESVILLE (2016)
 JV0824
 JV0824                         *CURRENT SURVEY CONTROL
 JV0824  ______________________________________________________________________
 JV0824* NAD 83(1986) POSITION- 39 18 08.46   (N) 076 54 40.08   (W)   HD_HELD1
 JV0824* NAVD 88 ORTHO HEIGHT -   156.596 (meters)      513.77  (feet) ADJUSTED
 JV0824  ______________________________________________________________________
 JV0824  GEOID HEIGHT    -        -32.024 (meters)                     GEOID18
 JV0824  DYNAMIC HEIGHT  -        156.513 (meters)      513.49  (feet) COMP
 JV0824  MODELED GRAVITY -    980,095.4   (mgal)                       NAVD 88
 JV0824
 JV0824  VERT ORDER      -  SECOND    CLASS 0
 JV0824
 JV0824.The horizontal coordinates were determined by differentially corrected
 JV0824.hand held GPS observations or other comparable positioning techniques
 JV0824.and have an estimated accuracy of +/- 3 meters.
 JV0824
 JV0824.The orthometric height was determined by differential leveling and
 JV0824.adjusted by the NATIONAL GEODETIC SURVEY
 JV0824.in June 1991.
 JV0824
 JV0824.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0824.GEOID18 height accuracy estimate available here.
 JV0824
 JV0824.Click photographs - Photos may exist for this station.
 JV0824
 JV0824.The dynamic height is computed by dividing the NAVD 88
 JV0824.geopotential number by the normal gravity value computed on the
 JV0824.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0824.degrees latitude (g = 980.6199 gals.).
 JV0824
 JV0824.The modeled gravity was interpolated from observed gravity values.
 JV0824
 JV0824;                    North         East    Units  Estimated Accuracy
 JV0824;SPC MD       -   181,575.1     407,665.2     MT  (+/- 3 meters HH1 GPS) 
 JV0824
 JV0824_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3521252070(NAD 83)
 JV0824
 JV0824                          SUPERSEDED SURVEY CONTROL
 JV0824
 JV0824  NGVD 29 (11/26/84)  156.810  (m)          514.47   (f) ADJUSTED    2 0
 JV0824
 JV0824.Superseded values are not recommended for survey control.
 JV0824
 JV0824.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0824.See file dsdata.pdf to determine how the superseded data were derived.
 JV0824
 JV0824_MARKER: DR = REFERENCE MARK DISK
 JV0824_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0824_STAMPING: BALTO NAT PIKE NO 7 NO 1 1953
 JV0824_MARK LOGO: CGS
 JV0824_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0824+STABILITY: SURFACE MOTION
 JV0824
 JV0824  HISTORY     - Date     Condition        Report By
 JV0824  HISTORY     - 1953     MONUMENTED       CGS
 JV0824  HISTORY     - 1958     GOOD             CGS
 JV0824
 JV0824                          STATION DESCRIPTION
 JV0824
 JV0824'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0824'6.5 MI E FROM COOKSVILLE.
 JV0824'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0824'COOKSVILLE, THENCE 6.2 MILES EAST ALONG U.S. HIGHWAY 40, ON THE
 JV0824'TOP OF A CUT, 29.4 FEET NORTH OF THE STATION, 89 FEET NORTH OF
 JV0824'THE CENTER LINE OF THE WEST BOUND LANE, SET IN THE TOP OF A
 JV0824'CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0825 ***********************************************************************
 JV0825  DESIGNATION -  BALTO NAT PIKE 7 RM 2
 JV0825  PID         -  JV0825
 JV0825  STATE/COUNTY-  MD/HOWARD
 JV0825  COUNTRY     -  US
 JV0825  USGS QUAD   -  SYKESVILLE (2016)
 JV0825
 JV0825                         *CURRENT SURVEY CONTROL
 JV0825  ______________________________________________________________________
 JV0825* NAD 83(1986) POSITION- 39 18 08.36   (N) 076 54 39.55   (W)   HD_HELD1
 JV0825* NAVD 88 ORTHO HEIGHT -   156.568 (meters)      513.67  (feet) ADJUSTED
 JV0825  ______________________________________________________________________
 JV0825  GEOID HEIGHT    -        -32.024 (meters)                     GEOID18
 JV0825  DYNAMIC HEIGHT  -        156.486 (meters)      513.40  (feet) COMP
 JV0825  MODELED GRAVITY -    980,095.4   (mgal)                       NAVD 88
 JV0825
 JV0825  VERT ORDER      -  SECOND    CLASS I
 JV0825
 JV0825.The horizontal coordinates were determined by differentially corrected
 JV0825.hand held GPS observations or other comparable positioning techniques
 JV0825.and have an estimated accuracy of +/- 3 meters.
 JV0825
 JV0825.The orthometric height was determined by differential leveling and
 JV0825.adjusted by the NATIONAL GEODETIC SURVEY
 JV0825.in June 1991.
 JV0825
 JV0825.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0825.GEOID18 height accuracy estimate available here.
 JV0825
 JV0825.Click photographs - Photos may exist for this station.
 JV0825
 JV0825.The dynamic height is computed by dividing the NAVD 88
 JV0825.geopotential number by the normal gravity value computed on the
 JV0825.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0825.degrees latitude (g = 980.6199 gals.).
 JV0825
 JV0825.The modeled gravity was interpolated from observed gravity values.
 JV0825
 JV0825;                    North         East    Units  Estimated Accuracy
 JV0825;SPC MD       -   181,572.0     407,677.9     MT  (+/- 3 meters HH1 GPS) 
 JV0825
 JV0825_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3522452067(NAD 83)
 JV0825
 JV0825                          SUPERSEDED SURVEY CONTROL
 JV0825
 JV0825  NGVD 29 (11/26/84)  156.783  (m)          514.38   (f) ADJUSTED    2 0
 JV0825
 JV0825.Superseded values are not recommended for survey control.
 JV0825
 JV0825.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0825.See file dsdata.pdf to determine how the superseded data were derived.
 JV0825
 JV0825_MARKER: DR = REFERENCE MARK DISK
 JV0825_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0825_STAMPING: BALTO NAT PIKE NO 7 NO 2 1953
 JV0825_MARK LOGO: CGS
 JV0825_PROJECTION: RECESSED 5 CENTIMETERS
 JV0825_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0825_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0825+STABILITY: SURFACE MOTION
 JV0825_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0825+SATELLITE: SATELLITE OBSERVATIONS - May 25, 2007
 JV0825
 JV0825  HISTORY     - Date     Condition        Report By
 JV0825  HISTORY     - 1953     MONUMENTED       CGS
 JV0825  HISTORY     - 1958     GOOD             CGS
 JV0825  HISTORY     - 20070525 GOOD             MDSHA
 JV0825
 JV0825                          STATION DESCRIPTION
 JV0825
 JV0825'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0825'6.5 MI E FROM COOKSVILLE.
 JV0825'0.3 MILE NORTH ALONG STATE HIGHWAY 97 FROM THE POST OFFICE AT
 JV0825'COOKSVILLE, THENCE 6.2 MILES EAST ALONG U.S. HIGHWAY 40, ON THE
 JV0825'TOP OF A CUT BANK, 30.6 FEET EAST OF THE STATION, 58 FEET NORTH
 JV0825'OF THE CENTER LINE OF THE WEST BOUND LANE, ABOUT 15 FEET WEST
 JV0825'OF THE WEST EDGE OF A WOODED AREA, SET IN THE TOP OF A CONCRETE
 JV0825'POST FLUSH WITH THE GROUND.
 JV0825
 JV0825                          STATION RECOVERY (2007)
 JV0825
 JV0825'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV0825'THE STATION IS LOCATED ABOUT 5.1 MI (8.2 KM) EAST-NORTHEAST OF
 JV0825'GLENEIG, 3.2 MI (5.1 KM) WEST-NORTHWEST OF PINE ORCHARD AND 2.2 MI
 JV0825'(3.5 KM) EAST OF WEST FRIENDSHIP AND AT A POINT WHERE US HIGHWAY 40
 JV0825'AND INTERSTATE HIGHWAY 70 MERGES.
 JV0825'
 JV0825'IT IS IN A ISLAND ALONG THE SOUTH SIDE OF INTERSTATE HIGHWAY 70
 JV0825'BETWEEN THE OVERPASS BRIDGE FOR THE WEST BOUND LANES OF US HIGHWAY 40
 JV0825'WHERE IT JOINS INTERSTATE HIGHWAY 70 AND WHERE THE EASTBOUND LANES OF
 JV0825'U.S.HIGHWAY 40 LEAVES INTERSTATE HIGHWAY 70, 100 FT (30.5 M) SOUTH OF
 JV0825'THE CENTERLINE OF THE EASTBOUND LANES OF INTERSTATE 70 AND SET IN A
 JV0825'12-INCH (30 CM) SQUARE CONCRETE MONUMENT.  IT IS 30.5 FT (9.3 M)
 JV0825'WEST-SOUTHWEST FROM STATION BALTO NATIONAL PIKE 7.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 CA9947 ***********************************************************************
 CA9947  DESIGNATION -  BALTO NAT PIKE 7 RM 3
 CA9947  PID         -  CA9947
 CA9947  STATE/COUNTY-  MD/HOWARD
 CA9947  COUNTRY     -  US
 CA9947  USGS QUAD   -  SYKESVILLE (2016)
 CA9947
 CA9947                         *CURRENT SURVEY CONTROL
 CA9947  ______________________________________________________________________
 CA9947* NAD 83(1986) POSITION- 39 18 08.06   (N) 076 54 39.66   (W)   HD_HELD1
 CA9947* NAVD 88 ORTHO HEIGHT -   156.363 (meters)      513.00  (feet) ADJUSTED
 CA9947  ______________________________________________________________________
 CA9947  GEOID HEIGHT    -        -32.024 (meters)                     GEOID18
 CA9947  DYNAMIC HEIGHT  -        156.280 (meters)      512.73  (feet) COMP
 CA9947  MODELED GRAVITY -    980,095.5   (mgal)                       NAVD 88
 CA9947
 CA9947  VERT ORDER      -  SECOND    CLASS I
 CA9947
 CA9947.The horizontal coordinates were determined by differentially corrected
 CA9947.hand held GPS observations or other comparable positioning techniques
 CA9947.and have an estimated accuracy of +/- 3 meters.
 CA9947
 CA9947.The orthometric height was determined by differential leveling and
 CA9947.adjusted by the NATIONAL GEODETIC SURVEY
 CA9947.in March 2010.
 CA9947
 CA9947.No vertical observational check was made to the station.
 CA9947
 CA9947.Significant digits in the geoid height do not necessarily reflect accuracy.
 CA9947.GEOID18 height accuracy estimate available here.
 CA9947
 CA9947.Click photographs - Photos may exist for this station.
 CA9947
 CA9947.The dynamic height is computed by dividing the NAVD 88
 CA9947.geopotential number by the normal gravity value computed on the
 CA9947.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 CA9947.degrees latitude (g = 980.6199 gals.).
 CA9947
 CA9947.The modeled gravity was interpolated from observed gravity values.
 CA9947
 CA9947;                    North         East    Units  Estimated Accuracy
 CA9947;SPC MD       -   181,562.8     407,675.2     MT  (+/- 3 meters HH1 GPS) 
 CA9947
 CA9947_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3522152058(NAD 83)
 CA9947
 CA9947                          SUPERSEDED SURVEY CONTROL
 CA9947
 CA9947.No superseded survey control is available for this station.
 CA9947
 CA9947_MARKER: DR = REFERENCE MARK DISK
 CA9947_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 CA9947_STAMPING: BALTO NAT PIKE NO 7 NO-3 1975
 CA9947_MARK LOGO: NGS
 CA9947_PROJECTION: RECESSED 3 CENTIMETERS
 CA9947_MAGNETIC: N = NO MAGNETIC MATERIAL
 CA9947_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 CA9947+STABILITY: SURFACE MOTION
 CA9947
 CA9947  HISTORY     - Date     Condition        Report By
 CA9947  HISTORY     - 1975     MONUMENTED       NGS
 CA9947  HISTORY     - 20070525 GOOD             MDSHA
 CA9947
 CA9947                          STATION DESCRIPTION
 CA9947
 CA9947'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 CA9947'THE STATION IS LOCATED ABOUT 5.1 MI (8.2 KM) EAST-NORTHEAST OF
 CA9947'GLENEIG, 3.2 MI (5.1 KM) WEST-NORTHWEST OF PINE ORCHARD AND 2.2 MI
 CA9947'(3.5 KM) EAST OF WEST FRIENDSHIP AND AT A POINT WHERE U.S.HIGHWAY 40
 CA9947'AND INTERSTATE HIGHWAY 70 MERGES.  IT IS IN A ISLAND ALONG THE SOUTH
 CA9947'SIDE OF INTERSTATE HIGHWAY 70 BETWEEN THE OVERPASS BRIDGE FOR THE WEST
 CA9947'BOUND LANES OF U.S.HIGHWAY 40 AND WHERE THE EAST BOUND LANES OF
 CA9947'U.S.HIGHWAY 40 LEAVES INTERSTATE HIGHWAY 70.
 CA9947'
 CA9947'IT IS 60 FT (18.3 M) SOUTH OF THE CENTERLINE OF THE EASTBOUND LANES OF
 CA9947'INTERSTATE HIGHWAY 70 AND SET IN THE TOP OF A 10 INCH (25 CM) ROUND
 CA9947'CONCRETE MONUMENT.  IT IS 23.6 FT (7.2 M) NORTHWEST OF STATION BALTO
 CA9947'NATIONAL PIKE 7.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4208 ***********************************************************************
 JV4208  DESIGNATION -  BALTO NAT PIKE RM 1
 JV4208  PID         -  JV4208
 JV4208  STATE/COUNTY-  MD/HOWARD
 JV4208  COUNTRY     -  US
 JV4208  USGS QUAD   -  WOODBINE (2016)
 JV4208
 JV4208                         *CURRENT SURVEY CONTROL
 JV4208  ______________________________________________________________________
 JV4208* NAD 83(1991) POSITION- 39 19 30.83215(N) 077 00 47.80688(W)   ADJUSTED
 JV4208* NAVD 88 ORTHO HEIGHT -   196.    (meters)      643.    (feet) SCALED
 JV4208  ______________________________________________________________________
 JV4208  GEOID HEIGHT    -        -31.886 (meters)                     GEOID18
 JV4208  LAPLACE CORR    -         -1.70  (seconds)                    DEFLEC18
 JV4208  HORZ ORDER      -  SECOND
 JV4208
 JV4208.The horizontal coordinates were established by classical geodetic methods
 JV4208.and adjusted by the National Geodetic Survey in January 1992.
 JV4208
 JV4208.The orthometric height was scaled from a topographic map.
 JV4208
 JV4208.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4208.GEOID18 height accuracy estimate available here.
 JV4208
 JV4208.Click photographs - Photos may exist for this station.
 JV4208
 JV4208.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4208
 JV4208. The following values were computed from the NAD 83(1991) position.
 JV4208
 JV4208;                    North         East     Units Scale Factor Converg.
 JV4208;SPC MD       -   184,111.683   398,854.936   MT  0.99998055   -0 00 30.0
 JV4208;SPC MD       -   604,039.75  1,308,576.57   sFT  0.99998055   -0 00 30.0
 JV4208;UTM  18      - 4,354,801.468   326,460.385   MT  0.99997082   -1 16 34.2
 JV4208
 JV4208!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4208!SPC MD       -   0.99997429  x   0.99998055  =   0.99995484
 JV4208!UTM  18      -   0.99997429  x   0.99997082  =   0.99994511
 JV4208
 JV4208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2646054801(NAD 83)
 JV4208
 JV4208                          SUPERSEDED SURVEY CONTROL
 JV4208
 JV4208  NAD 83(1986)-  39 19 30.83139(N)    077 00 47.81514(W) AD(       ) 2
 JV4208  NAD 27      -  39 19 30.45397(N)    077 00 48.88976(W) AD(       ) 2
 JV4208
 JV4208.Superseded values are not recommended for survey control.
 JV4208
 JV4208.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4208.See file dsdata.pdf to determine how the superseded data were derived.
 JV4208
 JV4208_MARKER: DD = SURVEY DISK
 JV4208_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4208_STAMPING: BALTO NAT PIKE NO 1 1953
 JV4208_MARK LOGO: MDBCSM
 JV4208_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4208+STABILITY: SURFACE MOTION
 JV4208
 JV4208  HISTORY     - Date     Condition        Report By
 JV4208  HISTORY     - 1958     MONUMENTED       CGS
 JV4208
 JV4208                          STATION DESCRIPTION
 JV4208
 JV4208'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV4208'BALTO. NAT. PIKE NO.1 (R.M.) IS 3 FEET WEST OF POWER POLE
 JV4208'NO. 218303.  THE MARK IS BRONZE DISK SET IN A 6 INCH SQUARE
 JV4208'CONCRETE POST WHICH IS FLUSH WITH THE GROUND AND THE DISK IS
 JV4208'STAMPED BALTO. NAT. PIKE NO 1 1953.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2258 ***********************************************************************
 JV2258  DESIGNATION -  BANA
 JV2258  PID         -  JV2258
 JV2258  STATE/COUNTY-  MD/FREDERICK
 JV2258  COUNTRY     -  US
 JV2258  USGS QUAD   -  URBANA (2016)
 JV2258
 JV2258                         *CURRENT SURVEY CONTROL
 JV2258  ______________________________________________________________________
 JV2258* NAD 83(1993) POSITION- 39 19 14.53057(N) 077 21 12.41347(W)   ADJUSTED
 JV2258* NAVD 88 ORTHO HEIGHT -   140.390 (meters)      460.60  (feet) ADJUSTED
 JV2258  ______________________________________________________________________
 JV2258  GEOID HEIGHT    -        -32.333 (meters)                     GEOID18
 JV2258  LAPLACE CORR    -          5.94  (seconds)                    DEFLEC18
 JV2258  DYNAMIC HEIGHT  -        140.314 (meters)      460.35  (feet) COMP
 JV2258  MODELED GRAVITY -    980,088.6   (mgal)                       NAVD 88
 JV2258
 JV2258  HORZ ORDER      -  SECOND
 JV2258  VERT ORDER      -  SECOND    CLASS 0
 JV2258
 JV2258.The horizontal coordinates were established by classical geodetic methods
 JV2258.and adjusted by the National Geodetic Survey in November 1994.
 JV2258
 JV2258.The orthometric height was determined by differential leveling and
 JV2258.adjusted by the NATIONAL GEODETIC SURVEY
 JV2258.in June 1991.
 JV2258
 JV2258.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2258.GEOID18 height accuracy estimate available here.
 JV2258
 JV2258.Click photographs - Photos may exist for this station.
 JV2258
 JV2258.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2258
 JV2258.The dynamic height is computed by dividing the NAVD 88
 JV2258.geopotential number by the normal gravity value computed on the
 JV2258.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2258.degrees latitude (g = 980.6199 gals.).
 JV2258
 JV2258.The modeled gravity was interpolated from observed gravity values.
 JV2258
 JV2258. The following values were computed from the NAD 83(1993) position.
 JV2258
 JV2258;                    North         East     Units Scale Factor Converg.
 JV2258;SPC MD       -   183,667.883   369,521.440   MT  0.99997994   -0 13 18.6
 JV2258;SPC MD       -   602,583.71  1,212,338.26   sFT  0.99997994   -0 13 18.6
 JV2258;UTM  18      - 4,355,007.370   297,122.589   MT  1.00010680   -1 29 30.5
 JV2258
 JV2258!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2258!SPC MD       -   0.99998305  x   0.99997994  =   0.99996299
 JV2258!UTM  18      -   0.99998305  x   1.00010680  =   1.00008985
 JV2258
 JV2258:                Primary Azimuth Mark                     Grid Az
 JV2258:SPC MD       -  PERRY                                    149 25 03.7
 JV2258:UTM  18      -  PERRY                                    150 41 15.6
 JV2258
 JV2258_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9712255007(NAD 83)
 JV2258
 JV2258|---------------------------------------------------------------------|
 JV2258| PID    Reference Object                     Distance      Geod. Az  |
 JV2258|                                                           dddmmss.s |
 JV2258| JV2262 PERRY                               APPROX. 3.4 KM 1491145.1 |
 JV2258| JV2257 BANA RM 1                             9.086 METERS 14955     |
 JV2258| JV2259 BANA RM 2                            10.338 METERS 34401     |
 JV2258|---------------------------------------------------------------------|
 JV2258
 JV2258                          SUPERSEDED SURVEY CONTROL
 JV2258
 JV2258  NAD 83(1991)-  39 19 14.53028(N)    077 21 12.41274(W) AD(       ) 2
 JV2258  NAD 83(1986)-  39 19 14.53025(N)    077 21 12.42356(W) AD(       ) 2
 JV2258  NAD 27      -  39 19 14.15418(N)    077 21 13.46823(W) AD(       ) 2
 JV2258  NGVD 29             140.60   (m)          461.3    (f) LEVELING    3  
 JV2258  NGVD 29 (11/26/84)  140.598  (m)          461.28   (f) ADJUSTED    2 0
 JV2258
 JV2258.Superseded values are not recommended for survey control.
 JV2258
 JV2258.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2258.See file dsdata.pdf to determine how the superseded data were derived.
 JV2258
 JV2258_MARKER: DS = TRIANGULATION STATION DISK
 JV2258_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2258_STAMPING: BANA 1958
 JV2258_MARK LOGO: CGS
 JV2258_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2258+STABILITY: SURFACE MOTION
 JV2258
 JV2258  HISTORY     - Date     Condition        Report By
 JV2258  HISTORY     - 1958     MONUMENTED       CGS
 JV2258  HISTORY     - 1958     GOOD             CGS
 JV2258  HISTORY     - 20020627 MARK NOT FOUND   INDIV
 JV2258
 JV2258                          STATION DESCRIPTION
 JV2258
 JV2258'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2258'STATION IS LOCATED ON TOP OF A CUT EMBANKMENT ALONG THE NORTHEAST
 JV2258'SIDE OF U.S. HIGHWAY NO. 240 ABOUT 7-1/2 MILES SOUTHEAST OF THE
 JV2258'CENTER OF FREDERICK AND ABOUT 0.3 MILE SOUTH OF URBANA.  STATION IS
 JV2258'10 FEET EAST OF THE EAST EDGE OF BACKSLOPE AND 7 FEET
 JV2258'WEST-SOUTHWEST OF WEST EDGE OF CORN FIELD.  THE MARK IS SET FLUSH
 JV2258'AND THE DISK IS STAMPED BANA 1958.
 JV2258'
 JV2258'REFERENCE MARK NO. 1 IS 11 FEET EAST OF EAST EDGE OF BACKSLOPE
 JV2258'AND 2 FEET WEST OF THE WEST EDGE OF CORN FIELD.  THE MARK IS SET
 JV2258'FLUSH AND THE DISK IS STAMPED BANA NO 1 1958.
 JV2258'
 JV2258'REFERENCE MARK NO. 2 IS 10-1/2 FEET EAST OF EAST EDGE OF
 JV2258'BACKSLOPE AND 2 FEET WEST OF WEST EDGE OF CORN FIELD.  THE MARK
 JV2258'IS SET FLUSH AND THE DISK IS STAMPED BANA NO 2 1958.
 JV2258'
 JV2258'STATION PERRY IS VISIBLE FROM GROUND AND MAY BE USED AS
 JV2258'AZIMUTH MARK.
 JV2258'
 JV2258'TO REACH FROM THE JUNCTION OF STATE HIGHWAY NO. 80 AND
 JV2258'U.S. HIGHWAY NO. 240 IN THE SOUTHWEST EDGE OF URBANA, GO
 JV2258'SOUTHEASTERLY ON U.S. HIGHWAY NO. 240 FOR 0.25 MILE TO STATION
 JV2258'ON TOP OF CUT EMBANKMENT ON LEFT (NORTHEAST) SIDE OF HIGHWAY AS
 JV2258'DESCRIBED.
 JV2258'
 JV2258'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV2258
 JV2258                          STATION RECOVERY (1958)
 JV2258
 JV2258'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2258'8 MI SE FROM FREDERICK.
 JV2258'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 340 FROM THE INTERSECTION
 JV2258'OF U.S. HIGHWAY 40 (CITY ROUTE) AT FREDERICK, THENCE 7.4 MILES
 JV2258'SOUTHEAST ALONG U.S. HIGHWAY 240, ABOUT 0.3 MILE SOUTHEAST OF
 JV2258'THE JUNCTION OF U.S. HIGHWAY 240 AND STATE HIGHWAY 80, ON THE
 JV2258'TOP OF A HIGH CUT BANK, ABOUT 100 FEET EAST OF THE CENTER LINE
 JV2258'OF THE NORTH BOUND LANE, 241 FEET SOUTH OF POWER LINE POLE NO.
 JV2258'F 18146, 1 FOOT SOUTH OF A METAL WITNESS POST, ABOUT 25 FEET
 JV2258'ABOVE THE LEVEL OF THE HIGHWAY AND SET IN THE TOP OF A CONCRETE
 JV2258'POST FLUSH WITH THE GROUND.
 JV2258
 JV2258                          STATION RECOVERY (2002)
 JV2258
 JV2258'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (BAP)
 JV2258'STATION HAS BEEN DESTROYED DUE TO NEW CONSTRUCTION OF A PARK AND RIDE.
 JV2258'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2257 ***********************************************************************
 JV2257  DESIGNATION -  BANA RM 1
 JV2257  PID         -  JV2257
 JV2257  STATE/COUNTY-  MD/FREDERICK
 JV2257  COUNTRY     -  US
 JV2257  USGS QUAD   -  URBANA (2016)
 JV2257
 JV2257                         *CURRENT SURVEY CONTROL
 JV2257  ______________________________________________________________________
 JV2257* NAD 83(1986) POSITION- 39 19 14.28   (N) 077 21 12.22   (W)   HD_HELD1
 JV2257* NAVD 88 ORTHO HEIGHT -   140.465 (meters)      460.84  (feet) ADJUSTED
 JV2257  ______________________________________________________________________
 JV2257  GEOID HEIGHT    -        -32.333 (meters)                     GEOID18
 JV2257  DYNAMIC HEIGHT  -        140.390 (meters)      460.60  (feet) COMP
 JV2257  MODELED GRAVITY -    980,088.6   (mgal)                       NAVD 88
 JV2257
 JV2257  VERT ORDER      -  SECOND    CLASS 0
 JV2257
 JV2257.The horizontal coordinates were determined by differentially corrected
 JV2257.hand held GPS observations or other comparable positioning techniques
 JV2257.and have an estimated accuracy of +/- 3 meters.
 JV2257
 JV2257.The orthometric height was determined by differential leveling and
 JV2257.adjusted by the NATIONAL GEODETIC SURVEY
 JV2257.in June 1991.
 JV2257
 JV2257.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2257.GEOID18 height accuracy estimate available here.
 JV2257
 JV2257.Click photographs - Photos may exist for this station.
 JV2257
 JV2257.The dynamic height is computed by dividing the NAVD 88
 JV2257.geopotential number by the normal gravity value computed on the
 JV2257.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2257.degrees latitude (g = 980.6199 gals.).
 JV2257
 JV2257.The modeled gravity was interpolated from observed gravity values.
 JV2257
 JV2257;                    North         East    Units  Estimated Accuracy
 JV2257;SPC MD       -   183,660.1     369,526.0     MT  (+/- 3 meters HH1 GPS) 
 JV2257
 JV2257_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9712754999(NAD 83)
 JV2257
 JV2257                          SUPERSEDED SURVEY CONTROL
 JV2257
 JV2257  NGVD 29 (11/26/84)  140.673  (m)          461.52   (f) ADJUSTED    2 0
 JV2257
 JV2257.Superseded values are not recommended for survey control.
 JV2257
 JV2257.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2257.See file dsdata.pdf to determine how the superseded data were derived.
 JV2257
 JV2257_MARKER: DR = REFERENCE MARK DISK
 JV2257_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2257_STAMPING: BANA NO 1 1958
 JV2257_MARK LOGO: CGS
 JV2257_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2257+STABILITY: SURFACE MOTION
 JV2257
 JV2257  HISTORY     - Date     Condition        Report By
 JV2257  HISTORY     - 1958     MONUMENTED       CGS
 JV2257
 JV2257                          STATION DESCRIPTION
 JV2257
 JV2257'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2257'8 MI SE FROM FREDERICK.
 JV2257'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 340 FROM THE INTERSECTION
 JV2257'OF U.S. HIGHWAY 40 (CITY ROUTE) AT FREDERICK, THENCE 7.4 MILES
 JV2257'SOUTHEAST ALONG U.S. HIGHWAY 240, ON TOP OF A CUT, 0.3 MILE
 JV2257'SOUTHEAST OF THE INTERSECTION OF U.S. HIGHWAY 240 AND STATE
 JV2257'HIGHWAY 80, 29.9 FEET SOUTH OF THE STATION, SET IN THE TOP OF
 JV2257'A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2259 ***********************************************************************
 JV2259  DESIGNATION -  BANA RM 2
 JV2259  PID         -  JV2259
 JV2259  STATE/COUNTY-  MD/FREDERICK
 JV2259  COUNTRY     -  US
 JV2259  USGS QUAD   -  URBANA (2016)
 JV2259
 JV2259                         *CURRENT SURVEY CONTROL
 JV2259  ______________________________________________________________________
 JV2259* NAD 83(1986) POSITION- 39 19 14.85   (N) 077 21 12.53   (W)   HD_HELD1
 JV2259* NAVD 88 ORTHO HEIGHT -   140.335 (meters)      460.42  (feet) ADJUSTED
 JV2259  ______________________________________________________________________
 JV2259  GEOID HEIGHT    -        -32.334 (meters)                     GEOID18
 JV2259  DYNAMIC HEIGHT  -        140.260 (meters)      460.17  (feet) COMP
 JV2259  MODELED GRAVITY -    980,088.6   (mgal)                       NAVD 88
 JV2259
 JV2259  VERT ORDER      -  SECOND    CLASS 0
 JV2259
 JV2259.The horizontal coordinates were determined by differentially corrected
 JV2259.hand held GPS observations or other comparable positioning techniques
 JV2259.and have an estimated accuracy of +/- 3 meters.
 JV2259
 JV2259.The orthometric height was determined by differential leveling and
 JV2259.adjusted by the NATIONAL GEODETIC SURVEY
 JV2259.in June 1991.
 JV2259
 JV2259.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2259.GEOID18 height accuracy estimate available here.
 JV2259
 JV2259.Click photographs - Photos may exist for this station.
 JV2259
 JV2259.The dynamic height is computed by dividing the NAVD 88
 JV2259.geopotential number by the normal gravity value computed on the
 JV2259.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2259.degrees latitude (g = 980.6199 gals.).
 JV2259
 JV2259.The modeled gravity was interpolated from observed gravity values.
 JV2259
 JV2259;                    North         East    Units  Estimated Accuracy
 JV2259;SPC MD       -   183,677.7     369,518.7     MT  (+/- 3 meters HH1 GPS) 
 JV2259
 JV2259_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9712055017(NAD 83)
 JV2259
 JV2259                          SUPERSEDED SURVEY CONTROL
 JV2259
 JV2259  NGVD 29 (11/26/84)  140.543  (m)          461.10   (f) ADJUSTED    2 0
 JV2259
 JV2259.Superseded values are not recommended for survey control.
 JV2259
 JV2259.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2259.See file dsdata.pdf to determine how the superseded data were derived.
 JV2259
 JV2259_MARKER: DR = REFERENCE MARK DISK
 JV2259_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2259_STAMPING: BANA NO 2 1958
 JV2259_MARK LOGO: CGS
 JV2259_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2259+STABILITY: SURFACE MOTION
 JV2259
 JV2259  HISTORY     - Date     Condition        Report By
 JV2259  HISTORY     - 1958     MONUMENTED       CGS
 JV2259
 JV2259                          STATION DESCRIPTION
 JV2259
 JV2259'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2259'8 MI SE FROM FREDERICK.
 JV2259'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 340 FROM THE INTERSECTION
 JV2259'OF U.S. HIGHWAY 40 (CITY ROUTE) AT FREDERICK, THENCE 7.4 MILES
 JV2259'SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT, ABOUT
 JV2259'0.3 MILE SOUTHEAST OF THE INTERSECTION OF U.S. HIGHWAY 240 AND
 JV2259'STATE HIGHWAY 80, 34.0 FEET NORTH OF THE STATION AND SET IN THE
 JV2259'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3136 ***********************************************************************
 DI3136  DESIGNATION -  BANBURY 1
 DI3136  PID         -  DI3136
 DI3136  STATE/COUNTY-  MD/TALBOT
 DI3136  COUNTRY     -  US
 DI3136  USGS QUAD   -  TRAPPE (2016)
 DI3136
 DI3136                         *CURRENT SURVEY CONTROL
 DI3136  ______________________________________________________________________
 DI3136* NAD 83(2011) POSITION- 38 39 01.42445(N) 076 00 30.69618(W)   ADJUSTED
 DI3136* NAD 83(2011) ELLIP HT-   -22.688 (meters)        (06/27/12)   ADJUSTED
 DI3136* NAD 83(2011) EPOCH   -  2010.00
 DI3136* NAVD 88 ORTHO HEIGHT -    12.3   (meters)       40.    (feet) GPS OBS
 DI3136  ______________________________________________________________________
 DI3136  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3136  GEOID HEIGHT    -        -34.985 (meters)                     GEOID03
 DI3136  GEOID HEIGHT    -        -35.008 (meters)                     GEOID18
 DI3136  NAD 83(2011) X  -  1,205,899.484 (meters)                     COMP
 DI3136  NAD 83(2011) Y  - -4,839,666.825 (meters)                     COMP
 DI3136  NAD 83(2011) Z  -  3,962,067.237 (meters)                     COMP
 DI3136  LAPLACE CORR    -         -3.51  (seconds)                    DEFLEC18
 DI3136
 DI3136  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3136  Standards:
 DI3136         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3136            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3136  -------------------------------------------------------------------
 DI3136  NETWORK    0.70   0.90           0.31   0.25   0.46      0.30361549
 DI3136  -------------------------------------------------------------------
 DI3136  Click here for local accuracies and other accuracy information.
 DI3136
 DI3136.The horizontal coordinates were established by GPS observations
 DI3136.and adjusted by the National Geodetic Survey in June 2012.
 DI3136
 DI3136.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3136.been affixed to the stable North American tectonic plate. See 
 DI3136.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3136
 DI3136.The horizontal coordinates are valid at the epoch date displayed above
 DI3136.which is a decimal equivalence of Year/Month/Day.
 DI3136
 DI3136.The orthometric height was determined by GPS observations and a
 DI3136.high-resolution geoid model.
 DI3136
 DI3136.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3136.GEOID18 height accuracy estimate available here.
 DI3136
 DI3136.Click photographs - Photos may exist for this station.
 DI3136
 DI3136.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3136
 DI3136.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3136
 DI3136.The ellipsoidal height was determined by GPS observations
 DI3136.and is referenced to NAD 83.
 DI3136
 DI3136. The following values were computed from the NAD 83(2011) position.
 DI3136
 DI3136;                    North         East     Units Scale Factor Converg.
 DI3136;SPC MD       -   109,666.423   486,303.456   MT  0.99995755   +0 37 20.2
 DI3136;SPC MD       -   359,797.26  1,595,480.59   sFT  0.99995755   +0 37 20.2
 DI3136;UTM  18      - 4,278,464.208   412,240.773   MT  0.99969484   -0 37 47.8
 DI3136
 DI3136!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3136!SPC MD       -   1.00000356  x   0.99995755  =   0.99996111
 DI3136!UTM  18      -   1.00000356  x   0.99969484  =   0.99969840
 DI3136
 DI3136:                Primary Azimuth Mark                     Grid Az
 DI3136:SPC MD       -  BANBURY 2                                062 50 37.9
 DI3136:UTM  18      -  BANBURY 2                                064 05 45.9
 DI3136
 DI3136_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1224078464(NAD 83)
 DI3136
 DI3136|---------------------------------------------------------------------|
 DI3136| PID    Reference Object                     Distance      Geod. Az  |
 DI3136|                                                           dddmmss.s |
 DI3136| DI3137 BANBURY 2                           APPROX. 0.6 KM 0632758.1 |
 DI3136|---------------------------------------------------------------------|
 DI3136
 DI3136                          SUPERSEDED SURVEY CONTROL
 DI3136
 DI3136  NAD 83(1991)-  38 39 01.42473(N)    076 00 30.69707(W) AD(       ) 1
 DI3136  ELLIP H (01/05/07)  -22.660  (m)                       GP(       ) 4 2
 DI3136
 DI3136.Superseded values are not recommended for survey control.
 DI3136
 DI3136.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3136.See file dsdata.pdf to determine how the superseded data were derived.
 DI3136
 DI3136_MARKER: DD = SURVEY DISK
 DI3136_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3136_STAMPING: BANBURY 1 2006
 DI3136_MARK LOGO: MD-041
 DI3136_PROJECTION: RECESSED 5 CENTIMETERS
 DI3136_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3136_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3136+STABILITY: SURFACE MOTION
 DI3136_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3136+SATELLITE: SATELLITE OBSERVATIONS - March 04, 2015
 DI3136
 DI3136  HISTORY     - Date     Condition        Report By
 DI3136  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3136  HISTORY     - 20150304 GOOD             ARCSHE
 DI3136
 DI3136                          STATION DESCRIPTION
 DI3136
 DI3136'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3136'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR TRAPPE
 DI3136'LANDING, MARYLAND.  IT IS  ABOUT 9.3 MI (15.0 KM) SOUTHEAST OF EASTON,
 DI3136'MARYLAND, ABOUT 7.3 MI (11.7 KM) NORTHEAST OF  CAMBRIDGE, MARYLAND AND
 DI3136'ABOUT 13.0 MI (20.9 KM) WEST OF FEDERALSBURG, MARYLAND.
 DI3136'
 DI3136'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR322 (EASTON
 DI3136'BYPASS) PROCEED  SOUTH ON US RTE 50 FOR 6.0 MI (9.7 KM) TO
 DI3136'INTERSECTION WITH BARBER ROAD.  TURN LEFT AND  PROCEED 1.5 MI (2.4 KM)
 DI3136'EAST TO INTERSECTION WITH KOOGLER ROAD.  TURN LEFT AND PROCEED  0.3 MI
 DI3136'(0.5 KM) NORTHEAST TO INTERSECTION WITH KATES POINT ROAD.  TURN RIGHT
 DI3136'AND PROCEED  1.2 MI (1.9 KM)  EAST TO THE INTERSECTION WITH BANBURY
 DI3136'ROAD (POSTED AS WINDY HILL ROAD).
 DI3136'STATION IS IN THE SOUTHEAST QUADRANT OF THE INTERSECTION, 19.0 FT (5.8
 DI3136'M) EAST OF V-SHAPED  BRICK HEADWALL, 72.0 FT (21.9 M) SOUTHWEST OF
 DI3136'TELEPHONE PEDESTAL 74 AND 3.0 FT (0.9 M)  SOUTH OF THE SOUTH EDGE OF
 DI3136'KATES POINT ROAD.  A 3 IN BRASS DISK STAMPED BANBURY 1 SET IN  THE TOP
 DI3136'OF A 1 FT (0.3 M) CONCRETE MONUMENT RECESSED 0.2 FT BELOW THE GROUND.
 DI3136
 DI3136                          STATION RECOVERY (2015)
 DI3136
 DI3136'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 DI3136'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3137 ***********************************************************************
 DI3137  DESIGNATION -  BANBURY 2
 DI3137  PID         -  DI3137
 DI3137  STATE/COUNTY-  MD/TALBOT
 DI3137  COUNTRY     -  US
 DI3137  USGS QUAD   -  TRAPPE (2016)
 DI3137
 DI3137                         *CURRENT SURVEY CONTROL
 DI3137  ______________________________________________________________________
 DI3137* NAD 83(2011) POSITION- 38 39 09.42860(N) 076 00 10.25244(W)   ADJUSTED
 DI3137* NAD 83(2011) ELLIP HT-   -25.389 (meters)        (06/27/12)   ADJUSTED
 DI3137* NAD 83(2011) EPOCH   -  2010.00
 DI3137* NAVD 88 ORTHO HEIGHT -     9.6   (meters)       31.    (feet) GPS OBS
 DI3137  ______________________________________________________________________
 DI3137  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3137  GEOID HEIGHT    -        -34.991 (meters)                     GEOID03
 DI3137  GEOID HEIGHT    -        -35.015 (meters)                     GEOID18
 DI3137  NAD 83(2011) X  -  1,206,341.360 (meters)                     COMP
 DI3137  NAD 83(2011) Y  - -4,839,395.655 (meters)                     COMP
 DI3137  NAD 83(2011) Z  -  3,962,258.301 (meters)                     COMP
 DI3137  LAPLACE CORR    -         -3.51  (seconds)                    DEFLEC18
 DI3137
 DI3137  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3137  Standards:
 DI3137         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3137            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3137  -------------------------------------------------------------------
 DI3137  NETWORK    0.70   0.92           0.31   0.25   0.47      0.30337800
 DI3137  -------------------------------------------------------------------
 DI3137  Click here for local accuracies and other accuracy information.
 DI3137
 DI3137.The horizontal coordinates were established by GPS observations
 DI3137.and adjusted by the National Geodetic Survey in June 2012.
 DI3137
 DI3137.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3137.been affixed to the stable North American tectonic plate. See 
 DI3137.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3137
 DI3137.The horizontal coordinates are valid at the epoch date displayed above
 DI3137.which is a decimal equivalence of Year/Month/Day.
 DI3137
 DI3137.The orthometric height was determined by GPS observations and a
 DI3137.high-resolution geoid model.
 DI3137
 DI3137.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3137.GEOID18 height accuracy estimate available here.
 DI3137
 DI3137.Click photographs - Photos may exist for this station.
 DI3137
 DI3137.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3137
 DI3137.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3137
 DI3137.The ellipsoidal height was determined by GPS observations
 DI3137.and is referenced to NAD 83.
 DI3137
 DI3137. The following values were computed from the NAD 83(2011) position.
 DI3137
 DI3137;                    North         East     Units Scale Factor Converg.
 DI3137;SPC MD       -   109,918.596   486,795.057   MT  0.99995739   +0 37 33.0
 DI3137;SPC MD       -   360,624.59  1,597,093.45   sFT  0.99995739   +0 37 33.0
 DI3137;UTM  18      - 4,278,705.513   412,737.637   MT  0.99969377   -0 37 35.1
 DI3137
 DI3137!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3137!SPC MD       -   1.00000398  x   0.99995739  =   0.99996137
 DI3137!UTM  18      -   1.00000398  x   0.99969377  =   0.99969775
 DI3137
 DI3137:                Primary Azimuth Mark                     Grid Az
 DI3137:SPC MD       -  BANBURY 1                                242 50 37.9
 DI3137:UTM  18      -  BANBURY 1                                244 05 46.0
 DI3137
 DI3137_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1273778705(NAD 83)
 DI3137
 DI3137|---------------------------------------------------------------------|
 DI3137| PID    Reference Object                     Distance      Geod. Az  |
 DI3137|                                                           dddmmss.s |
 DI3137| DI3136 BANBURY 1                           APPROX. 0.6 KM 2432810.9 |
 DI3137|---------------------------------------------------------------------|
 DI3137
 DI3137                          SUPERSEDED SURVEY CONTROL
 DI3137
 DI3137  NAD 83(1991)-  38 39 09.42888(N)    076 00 10.25332(W) AD(       ) 1
 DI3137  ELLIP H (01/05/07)  -25.361  (m)                       GP(       ) 4 2
 DI3137
 DI3137.Superseded values are not recommended for survey control.
 DI3137
 DI3137.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3137.See file dsdata.pdf to determine how the superseded data were derived.
 DI3137
 DI3137_MARKER: DD = SURVEY DISK
 DI3137_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3137_STAMPING: BANBURY 2 2006
 DI3137_MARK LOGO: MD-041
 DI3137_PROJECTION: RECESSED 5 CENTIMETERS
 DI3137_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3137_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3137+STABILITY: SURFACE MOTION
 DI3137_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3137+SATELLITE: SATELLITE OBSERVATIONS - March 04, 2015
 DI3137
 DI3137  HISTORY     - Date     Condition        Report By
 DI3137  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3137  HISTORY     - 20150304 GOOD             ARCSHE
 DI3137
 DI3137                          STATION DESCRIPTION
 DI3137
 DI3137'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3137'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR TRAPPE
 DI3137'LANDING, MARYLAND.  IT IS  ABOUT 9.2 MI (14.8 KM) SOUTHEAST OF EASTON,
 DI3137'MARYLAND, ABOUT 7.5 MI (12.1 KM) NORTHEAST OF  CAMBRIDGE, MARYLAND AND
 DI3137'ABOUT 12.6 MI (20.3 KM) WEST OF FEDERALSBURG, MARYLAND.
 DI3137'
 DI3137'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR322 (EASTON
 DI3137'BYPASS) PROCEED  SOUTH ON US RTE 50 FOR 6.0 MI (9.7 KM) TO
 DI3137'INTERSECTION WITH BARBER ROAD.  TURN LEFT AND  PROCEED 1.5 MI (2.4 KM)
 DI3137'EAST TO INTERSECTION WITH KOOGLER ROAD.  TURN LEFT AND PROCEED  0.3 MI
 DI3137'(0.5 KM) NORTHEAST TO INTERSECTION WITH KATES POINT ROAD.  TURN RIGHT
 DI3137'AND PROCEED  1.2 MI (1.9 KM)  EAST TO THE INTERSECTION WITH BANBURY
 DI3137'ROAD (POSTED AS WINDY HILL ROAD).   TURN LEFT AND PROCEED 0.3 MI (0.5
 DI3137'KM) TO THE STATION ON THE RIGHT.
 DI3137'STATION IS 4.5 FT (1.5 M) SOUTH OF THE SOUTH EDGE OF BANBURY ROAD,
 DI3137'143.0 FT (43.6 M)  SOUTHWEST OF TELEPHONE PEDESTAL 83 AND 5.5 FT (1.7
 DI3137'M) NORTH OF CENTER LINE OF DITCH.  A 3  IN BRASS DISK STAMPED BANBURY
 DI3137'2 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT  RECESSED 0.2 FT
 DI3137'FROM THE GROUND.
 DI3137
 DI3137                          STATION RECOVERY (2015)
 DI3137
 DI3137'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 DI3137'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6377 ***********************************************************************
 HV6377  DESIGNATION -  BANCROFT HALL NORTH CUPOLA
 HV6377  PID         -  HV6377
 HV6377  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6377  COUNTRY     -  US
 HV6377  USGS QUAD   -  ANNAPOLIS (2016)
 HV6377
 HV6377                         *CURRENT SURVEY CONTROL
 HV6377  ______________________________________________________________________
 HV6377* NAD 83(1991) POSITION- 38 58 55.56581(N) 076 28 58.83932(W)   ADJUSTED
 HV6377  ______________________________________________________________________
 HV6377  GEOID HEIGHT    -        -33.353 (meters)                     GEOID18
 HV6377  LAPLACE CORR    -         -3.68  (seconds)                    DEFLEC18
 HV6377  HORZ ORDER      -  THIRD
 HV6377
 HV6377.The horizontal coordinates were established by classical geodetic methods
 HV6377.and adjusted by the National Geodetic Survey in January 1992.
 HV6377
 HV6377.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6377.GEOID18 height accuracy estimate available here.
 HV6377
 HV6377.Click photographs - Photos may exist for this station.
 HV6377
 HV6377.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6377
 HV6377. The following values were computed from the NAD 83(1991) position.
 HV6377
 HV6377;                    North         East     Units Scale Factor Converg.
 HV6377;SPC MD       -   146,146.148   444,793.776   MT  0.99995156   +0 19 28.1
 HV6377;SPC MD       -   479,481.15  1,459,294.25   sFT  0.99995156   +0 19 28.1
 HV6377;UTM  18      - 4,315,836.284   371,548.112   MT  0.99980317   -0 55 59.0
 HV6377
 HV6377_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7154815836(NAD 83)
 HV6377
 HV6377                          SUPERSEDED SURVEY CONTROL
 HV6377
 HV6377  NAD 83(1986)-  38 58 55.56201(N)    076 28 58.85070(W) AD(       ) 3
 HV6377  NAD 27      -  38 58 55.16100(N)    076 28 59.99200(W) AD(       ) 3
 HV6377  USSD        -  38 58 55.52100(N)    076 28 59.81500(W) AD(       ) 3
 HV6377
 HV6377.Superseded values are not recommended for survey control.
 HV6377
 HV6377.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6377.See file dsdata.pdf to determine how the superseded data were derived.
 HV6377
 HV6377_MARKER: 86 = CUPOLA
 HV6377_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6377+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 HV6377
 HV6377  HISTORY     - Date     Condition        Report By
 HV6377  HISTORY     - 1932     FIRST OBSERVED   CGS
 HV6377  HISTORY     - 1960     GOOD             CGS
 HV6377  HISTORY     - 20010331 GOOD             NGS
 HV6377  HISTORY     - 20031002 GOOD             USPSQD
 HV6377  HISTORY     - 20050718 GOOD             USPSQD
 HV6377  HISTORY     - 20100314 GOOD             GEOCAC
 HV6377
 HV6377                          STATION DESCRIPTION
 HV6377
 HV6377'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6377'STATION IS THE NORTHERN OF TWO CUPOLAS WHICH ARE EQUIDISTANT FROM
 HV6377'THE CENTRAL DOME OF BANCROFT HALL IN THE NAVAL ACADEMY
 HV6377'GROUNDS.  THESE CUPOLAS RESEMBLE MINARETS AND ARE IN THE N AND S
 HV6377'WINGS RESPECTIVELY OF BANCROFT HALL.  THIS POINT IS PROBABLY THE
 HV6377'SAME AS DETERMINED IN 1910.
 HV6377
 HV6377                          STATION RECOVERY (1960)
 HV6377
 HV6377'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6377'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL
 HV6377'DESCRIPTION BY L.O.C. IN 1932 IS COMPLETE AND ADEQUATE WITH THE
 HV6377'FOLLOWING EXCEPTION.  THE ROOFS OF THE MINARETS ARE NOW PAINTED
 HV6377'GREEN.
 HV6377
 HV6377                          STATION RECOVERY (2001)
 HV6377
 HV6377'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6377'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6377
 HV6377                          STATION RECOVERY (2003)
 HV6377
 HV6377'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6377'RECOVERED IN GOOD CONDITION.
 HV6377
 HV6377                          STATION RECOVERY (2005)
 HV6377
 HV6377'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6377'RECOVERED IN GOOD CONDITION.
 HV6377
 HV6377                          STATION RECOVERY (2010)
 HV6377
 HV6377'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 HV6377'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2075 ***********************************************************************
 HU2075  DESIGNATION -  BANK
 HU2075  PID         -  HU2075
 HU2075  STATE/COUNTY-  MD/TALBOT
 HU2075  COUNTRY     -  US
 HU2075  USGS QUAD   -  EAST NEW MARKET (2016)
 HU2075
 HU2075                         *CURRENT SURVEY CONTROL
 HU2075  ______________________________________________________________________
 HU2075* NAD 83(1991) POSITION- 38 37 28.67090(N) 075 59 33.67933(W)   ADJUSTED
 HU2075* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU2075  ______________________________________________________________________
 HU2075  GEOID HEIGHT    -        -35.083 (meters)                     GEOID18
 HU2075  LAPLACE CORR    -         -3.36  (seconds)                    DEFLEC18
 HU2075  HORZ ORDER      -  THIRD
 HU2075
 HU2075.The horizontal coordinates were established by classical geodetic methods
 HU2075.and adjusted by the National Geodetic Survey in January 1992.
 HU2075
 HU2075.The orthometric height was scaled from a topographic map.
 HU2075
 HU2075.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2075.GEOID18 height accuracy estimate available here.
 HU2075
 HU2075.Click photographs - Photos may exist for this station.
 HU2075
 HU2075.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2075
 HU2075. The following values were computed from the NAD 83(1991) position.
 HU2075
 HU2075;                    North         East     Units Scale Factor Converg.
 HU2075;SPC MD       -   106,821.687   487,713.589   MT  0.99995940   +0 37 56.0
 HU2075;SPC MD       -   350,464.15  1,600,107.00   sFT  0.99995940   +0 37 56.0
 HU2075;UTM  18      - 4,275,590.100   413,588.052   MT  0.99969195   -0 37 10.9
 HU2075
 HU2075!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2075!SPC MD       -   1.00000538  x   0.99995940  =   0.99996478
 HU2075!UTM  18      -   1.00000538  x   0.99969195  =   0.99969733
 HU2075
 HU2075:                Primary Azimuth Mark                     Grid Az
 HU2075:SPC MD       -  RACCOON                                  018 48 03.8
 HU2075:UTM  18      -  RACCOON                                  020 03 10.7
 HU2075
 HU2075_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1358875590(NAD 83)
 HU2075
 HU2075|---------------------------------------------------------------------|
 HU2075| PID    Reference Object                     Distance      Geod. Az  |
 HU2075|                                                           dddmmss.s |
 HU2075| HU2082 RACCOON                             APPROX. 0.9 KM 0192559.8 |
 HU2075|---------------------------------------------------------------------|
 HU2075
 HU2075                          SUPERSEDED SURVEY CONTROL
 HU2075
 HU2075  NAD 83(1986)-  38 37 28.66731(N)    075 59 33.69701(W) AD(       ) 3
 HU2075  NAD 27      -  38 37 28.23300(N)    075 59 34.90200(W) AD(       ) 3
 HU2075  USSD        -  38 37 28.63700(N)    075 59 34.71000(W) AD(       ) 3
 HU2075
 HU2075.Superseded values are not recommended for survey control.
 HU2075
 HU2075.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2075.See file dsdata.pdf to determine how the superseded data were derived.
 HU2075
 HU2075_MARKER: H = DRILL HOLE
 HU2075_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HU2075_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2075
 HU2075  HISTORY     - Date     Condition        Report By
 HU2075  HISTORY     - 1909     MONUMENTED       MDSFC
 HU2075  HISTORY     - 1941     MARK NOT FOUND   CGS
 HU2075
 HU2075                          STATION DESCRIPTION
 HU2075
 HU2075'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HU2075'ON THE WESTERN SHORE OF THE UPPER PART OF CHOPTANK RIVER, ABOUT
 HU2075'1 MILE NNW OF JAMAICA POINT, AND 1-1/4 MILES SW OF ENTRANCE TO
 HU2075'CABIN CREEK, IN A CULTIVATED FIELD ON A TREE-FRINGED BLUFF, ABOUT
 HU2075'20 FEET ABOVE HIGH WATER, 10 YARDS NW OF EDGE OF BLUFF, 10 YARDS
 HU2075'W OF EDGE OF BLUFF, AND 12 YARDS N OF EDGE OF BLUFF.  STATION IS
 HU2075'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HU2075'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2
 HU2075'FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HU2075'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HU2075'SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE
 HU2075'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HU2075'DISTANCES TO VARIOUS POINTS OF REFERENCE ARE AS
 HU2075'FOLLOWS--NAIL IN BLAZE IN 7-INCH CEDAR TREE, 21.11 METERS (69.3
 HU2075'FEET), S 0 DEG 26 MIN W.  FRONT PEAK OF HOUSE, 1/8 MILE, S 7 DEG
 HU2075'55 MIN W.  LEFT CHIMNEY OF MODERN HOUSE, 1-1/4 MILES, N 25 DEG
 HU2075'21 MIN E.  NAIL IN BLAZE IN BRANCH OF DOUBLE OAK TREE (12 AND 18
 HU2075'INCHES DIAMETER), 7.03 METERS (23.06 FEET), N 54 DEG 23 MIN E.
 HU2075'CHIMNEY OF HOUSE IN WOODS, 1-1/2 MILES, N 73 DEG 56 MIN E.
 HU2075'CHIMNEY OF SHANTY IN WOODS, 1-1/8 MILES, N 74 DEG 27 MIN E.
 HU2075'CHIMNEY OF HOUSE, 1-3/4 MILES, S 57 DEG 11 MIN E.  NAIL IN BLAZE IN
 HU2075'8-INCH OAK TREE, 8.55 METERS (28.05 FEET), S 36 DEG 21 MIN E.
 HU2075
 HU2075                          STATION RECOVERY (1941)
 HU2075
 HU2075'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HU2075'STATION SEARCHED FOR BUT NOT FOUND.  THE FARMER WHO LIVED HERE
 HU2075'SINCE BOYHOOD REMEMBERS SEEING MARK SET AND ALSO SEEING IT WASHED
 HU2075'OUT IN AUGUST, 1933.
 HU2075'
 HU2075'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6267 ***********************************************************************
 HV6267  DESIGNATION -  BANK
 HV6267  PID         -  HV6267
 HV6267  STATE/COUNTY-  MD/QUEEN ANNES
 HV6267  COUNTRY     -  US
 HV6267  USGS QUAD   -  CLAIBORNE (2016)
 HV6267
 HV6267                         *CURRENT SURVEY CONTROL
 HV6267  ______________________________________________________________________
 HV6267* NAD 83(1991) POSITION- 38 51 26.10941(N) 076 20 19.92584(W)   ADJUSTED
 HV6267* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6267  ______________________________________________________________________
 HV6267  GEOID HEIGHT    -        -33.857 (meters)                     GEOID18
 HV6267  LAPLACE CORR    -         -4.84  (seconds)                    DEFLEC18
 HV6267  HORZ ORDER      -  THIRD
 HV6267
 HV6267.The horizontal coordinates were established by classical geodetic methods
 HV6267.and adjusted by the National Geodetic Survey in January 1992.
 HV6267
 HV6267.The orthometric height was scaled from a topographic map.
 HV6267
 HV6267.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6267.GEOID18 height accuracy estimate available here.
 HV6267
 HV6267.Click photographs - Photos may exist for this station.
 HV6267
 HV6267.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6267
 HV6267. The following values were computed from the NAD 83(1991) position.
 HV6267
 HV6267;                    North         East     Units Scale Factor Converg.
 HV6267;SPC MD       -   132,367.808   457,382.985   MT  0.99994990   +0 24 53.8
 HV6267;SPC MD       -   434,276.72  1,500,597.34   sFT  0.99994990   +0 24 53.8
 HV6267;UTM  18      - 4,301,787.584   383,830.182   MT  0.99976618   -0 50 24.3
 HV6267
 HV6267!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6267!SPC MD       -   1.00000519  x   0.99994990  =   0.99995509
 HV6267!UTM  18      -   1.00000519  x   0.99976618  =   0.99977137
 HV6267
 HV6267:                Primary Azimuth Mark                     Grid Az
 HV6267:SPC MD       -  PINE                                     177 03 34.5
 HV6267:UTM  18      -  PINE                                     178 18 52.6
 HV6267
 HV6267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8383001787(NAD 83)
 HV6267
 HV6267|---------------------------------------------------------------------|
 HV6267| PID    Reference Object                     Distance      Geod. Az  |
 HV6267|                                                           dddmmss.s |
 HV6267| HV6257 RICH NECK MANOR SMALL TANK          APPROX. 6.7 KM 0910855.2 |
 HV6267| HV6250 RICH NECK MANOR LARGE TANK          APPROX. 6.1 KM 1024543.9 |
 HV6267| HV6282 CLAIBORNE EPISCOPAL CH STEEPLE      APPROX. 6.1 KM 1133654.2 |
 HV6267| CX2054 BANK RM 1                            36.720 METERS 15009     |
 HV6267| HV6241 PINE                                APPROX. 9.1 KM 1772828.3 |
 HV6267| CX2055 BANK RM 2                            23.610 METERS 23116     |
 HV6267|---------------------------------------------------------------------|
 HV6267
 HV6267                          SUPERSEDED SURVEY CONTROL
 HV6267
 HV6267  NAD 83(1986)-  38 51 26.10568(N)    076 20 19.93873(W) AD(       ) 3
 HV6267  NAD 27      -  38 51 25.68000(N)    076 20 21.11200(W) AD(       ) 3
 HV6267
 HV6267.Superseded values are not recommended for survey control.
 HV6267
 HV6267.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6267.See file dsdata.pdf to determine how the superseded data were derived.
 HV6267
 HV6267_MARKER: DS = TRIANGULATION STATION DISK
 HV6267_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6267_STAMPING: BANK 1933
 HV6267_MARK LOGO: CGS
 HV6267_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6267
 HV6267  HISTORY     - Date     Condition        Report By
 HV6267  HISTORY     - 1933     MONUMENTED       CGS
 HV6267  HISTORY     - 1960     POOR             CGS
 HV6267  HISTORY     - 1973     POOR             MDDNR
 HV6267
 HV6267                          STATION DESCRIPTION
 HV6267
 HV6267'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (ERM)
 HV6267'STATION IS LOCATED ON LONG POINT AT THE SE END OF KENT ISLAND,
 HV6267'ON THE W SHORE OF EASTERN BAY, 53.2 METERS IN FROM THE SHORE, ON
 HV6267'A 7-FOOT BANK, IN A SMALL CULTIVATED TRACT OF LAND.
 HV6267'
 HV6267'STATION MARK IS A STANDARD BRONZE DISK IN A TILE.
 HV6267'
 HV6267'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE.
 HV6267'
 HV6267'REFERENCE MARK NO.1 IS TOWARD THE SHORE FROM THE STATION, AND
 HV6267'REFERENCE MARK NO.2 TOWARD THE TREES BORDERING THE CREEK W OF
 HV6267'THE STATION, BOTH SET IN SOLID GROUND.
 HV6267'
 HV6267'ALL OBSERVATIONS WERE TAKEN FROM BANK ECC. SET UP OVER REFERENCE
 HV6267'MARK NO.1 TO AVOID A TALL SIGNAL FOR THE BODKIN AND BELL LINES.
 HV6267'
 HV6267'STATION IS MOST AVAILABLE BY BOAT, BUT CAN BE REACHED BY CAR VIA
 HV6267'THE ROAD DOWN THE ISLAND FROM THE NORTHERN END TO THE HOUSE ABOUT
 HV6267'3/4 MILE N OF THE STATION.
 HV6267'
 HV6267'A 10-FOOT SIGNAL WAS USED AND IS OF SUFFICIENT HEIGHT TO SEE
 HV6267'ALL STATIONS AFTER TREES IN LINE TO BELL WERE CLEARED.
 HV6267
 HV6267                          STATION RECOVERY (1960)
 HV6267
 HV6267'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6267'STATION RECOVERED IN POOR CONDITION.  THE STATION MARK WAS
 HV6267'PROJECTING 15 INCHES ABOVE THE GROUND AND WAS LEANING TO THE
 HV6267'NORTH AT AN ANGLE OF ABOUT 15 DEG FROM THE VERTICAL.  THERE IS
 HV6267'EVIDENCE WHERE THE MARK HAS BEEN HIT BY FARM MACHINERY NUMEROUS
 HV6267'TIMES.
 HV6267'
 HV6267'R.M.S 1 AND 2 WERE FOUND LYING ON THEIR SIDES, EVIDENTLY THEY
 HV6267'WERE HIT BY FARM MACHINERY.  THE BRONZE DISKS WERE REMOVED BY
 HV6267'THIS PARTY.  NO NEW R.M.S WERE SET BECAUSE THE CONDITION OF THE
 HV6267'CENTER MARK WAS POOR.
 HV6267
 HV6267                          STATION RECOVERY (1973)
 HV6267
 HV6267'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV6267'STATION MARK WAS RECOVERED IN POOR CONDITION.  STATION NOW 23
 HV6267'YARDS N OF SHORE, NOT 53.2 METERS.  WITNESS POST AND SIGN PLACED
 HV6267'AT S EDGE OF MONUMENT WHICH IS 0.35 MILES FROM FENCE AT FARM
 HV6267'HOUSE AND ABOUT 100 YARDS FROM SW AND NW CORNERS OF FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6814 ***********************************************************************
 HV6814  DESIGNATION -  BANK
 HV6814  PID         -  HV6814
 HV6814  STATE/COUNTY-  MD/ST MARYS
 HV6814  COUNTRY     -  US
 HV6814  USGS QUAD   -  LEONARDTOWN (2016)
 HV6814
 HV6814                         *CURRENT SURVEY CONTROL
 HV6814  ______________________________________________________________________
 HV6814* NAD 83(1993) POSITION- 38 16 27.46618(N) 076 42 30.43989(W)   ADJUSTED
 HV6814* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 HV6814  ______________________________________________________________________
 HV6814  GEOID HEIGHT    -        -33.770 (meters)                     GEOID18
 HV6814  LAPLACE CORR    -         -2.17  (seconds)                    DEFLEC18
 HV6814  HORZ ORDER      -  THIRD
 HV6814
 HV6814.The horizontal coordinates were established by classical geodetic methods
 HV6814.and adjusted by the National Geodetic Survey in November 1994.
 HV6814
 HV6814.The orthometric height was scaled from a topographic map.
 HV6814
 HV6814.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6814.GEOID18 height accuracy estimate available here.
 HV6814
 HV6814.Click photographs - Photos may exist for this station.
 HV6814
 HV6814.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6814
 HV6814. The following values were computed from the NAD 83(1993) position.
 HV6814
 HV6814;                    North         East     Units Scale Factor Converg.
 HV6814;SPC MD       -    67,490.410   425,511.469   MT  1.00000457   +0 10 58.7
 HV6814;SPC MD       -   221,424.79  1,396,032.21   sFT  1.00000457   +0 10 58.7
 HV6814;SPC VA N     - 2,068,975.068 3,656,752.602   MT  0.99996622   +1 07 05.3
 HV6814;SPC VA N     - 6,787,962.37 11,997,195.83   sFT  0.99996622   +1 07 05.3
 HV6814;UTM  18      - 4,237,629.807   350,557.386   MT  0.99987505   -1 03 30.5
 HV6814
 HV6814!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6814!SPC MD       -   1.00000471  x   1.00000457  =   1.00000928
 HV6814!SPC VA N     -   1.00000471  x   0.99996622  =   0.99997093
 HV6814!UTM  18      -   1.00000471  x   0.99987505  =   0.99987976
 HV6814
 HV6814:                Primary Azimuth Mark                     Grid Az
 HV6814:SPC MD       -  SHIPPING MSFC 1908                       205 23 06.4
 HV6814:SPC VA N     -  SHIPPING MSFC 1908                       204 26 59.8
 HV6814:UTM  18      -  SHIPPING MSFC 1908                       206 37 35.6
 HV6814
 HV6814_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5055737629(NAD 83)
 HV6814
 HV6814|---------------------------------------------------------------------|
 HV6814| PID    Reference Object                     Distance      Geod. Az  |
 HV6814|                                                           dddmmss.s |
 HV6814| HV6808 HOWARDS MSFC 1908                   438.676 METERS 1624054.3 |
 HV6814| HV6804 SHIPPING MSFC 1908                  APPROX. 1.0 KM 2053405.1 |
 HV6814| CX2056 BANK RM                              18.530 METERS 31752     |
 HV6814|---------------------------------------------------------------------|
 HV6814
 HV6814                          SUPERSEDED SURVEY CONTROL
 HV6814
 HV6814  NAD 83(1991)-  38 16 27.46497(N)    076 42 30.44502(W) AD(       ) 3
 HV6814  NAD 83(1986)-  38 16 27.46583(N)    076 42 30.45642(W) AD(       ) 3
 HV6814  NAD 27      -  38 16 27.02400(N)    076 42 31.54400(W) AD(       ) 3
 HV6814  USSD        -  38 16 27.61600(N)    076 42 31.50300(W) AD(       ) 3
 HV6814
 HV6814.Superseded values are not recommended for survey control.
 HV6814
 HV6814.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6814.See file dsdata.pdf to determine how the superseded data were derived.
 HV6814
 HV6814_MARKER: N = NAIL
 HV6814_SETTING: 0 = UNSPECIFIED SETTING
 HV6814
 HV6814  HISTORY     - Date     Condition        Report By
 HV6814  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6814  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6814
 HV6814                          STATION DESCRIPTION
 HV6814
 HV6814'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6814'STATION IS ON THE EASTERN SHORE OF ST. CLEMENT BAY, ABOUT 1/4 MILE
 HV6814'N OF HOWARDS WHARF, 5/8 MILE NNE OF SHIPPING POINT, AND 5/8 MILE
 HV6814'ENE OF ENTRANCE TO MILEYS CREEK, IN A FIELD ADJOINING AN ORCHARD
 HV6814'BACK OF A TREE-FRINGED SHORE, 12 FEET ABOVE HIGH WATER, 20 YARDS
 HV6814'E OF EDGE OF FIELD, 17 YARDS S OF A SMALL GULLY, AND 50 YARDS N OF
 HV6814'A FENCE DIVIDING ORCHARD AND FIELD.
 HV6814'
 HV6814'STATION MARK IS NAIL IN STUB WITH TOP ABOUT FLUSH WITH SURFACE OF
 HV6814'GROUND.
 HV6814'
 HV6814'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6814'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6814'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6814'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6814'18.53 METERS (60.8 FEET) FROM STATION N 42 DEG 08 MIN W DISTANCES
 HV6814'AND BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 HV6814'FOLLOWS--NAIL IN BLAZE IN 18-INCH CHERRY TREE, 37.03 METERS (121.5
 HV6814'FEET), S 19 DEG 11 MIN W.  NEAR CHIMNEY OUTSIDE SMALL HOUSE ON
 HV6814'MILEYS CREEK, 3/4 MILE, S 67 DEG 46 MIN W.  CHIMNEY OUTSIDE RIGHT
 HV6814'END OF HOUSE, 5/8 MILE, S 80 DEG 49 MIN W.  FLAGSTAFF AT MAYCROFT,
 HV6814'5/8 MILE, N 65 DEG 21 MIN W. NAIL IN BLAZE IN 22-INCH CHERRY TREE,
 HV6814'19.69 METERS (64.6 FEET), N 42 DEG 4 MIN W.  RIGHT CHIMNEY OF
 HV6814'HOUSE, 1/2 MILE, N 0 DEG 50 MIN E.  NAIL IN BLAZE IN 13-INCH
 HV6814'WALNUT TREE, 13.49 METERS (44.3 FEET), N 28 DEG 11 MIN E.  TREE AT
 HV6814'CORNER OF ORCHARD, 66 YARDS, S 54 DEG 0 MIN E.  CHIMNEY OF HOUSE, 1/8
 HV6814'MILE, S 6 DEG 34 MIN E.
 HV6814
 HV6814                          STATION RECOVERY (1958)
 HV6814
 HV6814'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6814'THE STATION WAS SEARCHED FOR BY THREE MEN FOR ONE HOUR WITHOUT
 HV6814'RESULTS.  THE ORCHARD NO LONGER EXISTS AND THE FIELD IS NOW UNDER
 HV6814'CULTIVATION.  NONE OF THE VARIOUS TREE REFERENCES NOW EXIST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5150 ***********************************************************************
 JV5150  DESIGNATION -  BANK
 JV5150  PID         -  JV5150
 JV5150  STATE/COUNTY-  MD/KENT
 JV5150  COUNTRY     -  US
 JV5150  USGS QUAD   -  SWAN POINT (2016)
 JV5150
 JV5150                         *CURRENT SURVEY CONTROL
 JV5150  ______________________________________________________________________
 JV5150* NAD 83(1991) POSITION- 39 08 40.43868(N) 076 16 06.77777(W)   ADJUSTED
 JV5150* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5150  ______________________________________________________________________
 JV5150  GEOID HEIGHT    -        -33.313 (meters)                     GEOID18
 JV5150  LAPLACE CORR    -         -2.09  (seconds)                    DEFLEC18
 JV5150  HORZ ORDER      -  THIRD
 JV5150
 JV5150.The horizontal coordinates were established by classical geodetic methods
 JV5150.and adjusted by the National Geodetic Survey in January 1992.
 JV5150
 JV5150.The orthometric height was scaled from a topographic map.
 JV5150
 JV5150.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5150.GEOID18 height accuracy estimate available here.
 JV5150
 JV5150.Click photographs - Photos may exist for this station.
 JV5150
 JV5150.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5150
 JV5150. The following values were computed from the NAD 83(1991) position.
 JV5150
 JV5150;                    North         East     Units Scale Factor Converg.
 JV5150;SPC MD       -   164,308.118   463,230.641   MT  0.99996082   +0 27 32.7
 JV5150;SPC MD       -   539,067.55  1,519,782.53   sFT  0.99996082   +0 27 32.7
 JV5150;UTM  18      - 4,333,585.623   390,376.125   MT  0.99974797   -0 48 03.2
 JV5150
 JV5150!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5150!SPC MD       -   1.00000511  x   0.99996082  =   0.99996593
 JV5150!UTM  18      -   1.00000511  x   0.99974797  =   0.99975308
 JV5150
 JV5150:                Primary Azimuth Mark                     Grid Az
 JV5150:SPC MD       -  LOVE POINT LIGHTHOUSE                    186 59 49.8
 JV5150:UTM  18      -  LOVE POINT LIGHTHOUSE                    188 15 25.7
 JV5150
 JV5150_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9037633585(NAD 83)
 JV5150
 JV5150|---------------------------------------------------------------------|
 JV5150| PID    Reference Object                     Distance      Geod. Az  |
 JV5150|                                                           dddmmss.s |
 JV5150| JV5151 TAVERN                              APPROX. 0.6 KM 0144531.7 |
 JV5150| JV5162 LOVE POINT LIGHTHOUSE               APPROX. 9.8 KM 1872722.5 |
 JV5150|---------------------------------------------------------------------|
 JV5150
 JV5150                          SUPERSEDED SURVEY CONTROL
 JV5150
 JV5150  NAD 83(1986)-  39 08 40.43296(N)    076 16 06.78833(W) AD(       ) 3
 JV5150  NAD 27      -  39 08 40.05100(N)    076 16 07.96100(W) AD(       ) 3
 JV5150  USSD        -  39 08 40.40300(N)    076 16 07.78800(W) AD(       ) 3
 JV5150
 JV5150.Superseded values are not recommended for survey control.
 JV5150
 JV5150.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5150.See file dsdata.pdf to determine how the superseded data were derived.
 JV5150
 JV5150_MARKER: Z = SEE DESCRIPTION
 JV5150_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5150_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5150+STABILITY: SURFACE MOTION
 JV5150
 JV5150  HISTORY     - Date     Condition        Report By
 JV5150  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5150  HISTORY     - 1941     GOOD             CGS
 JV5150
 JV5150                          STATION DESCRIPTION
 JV5150
 JV5150'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5150'ON THE EASTERN SHORE OF CHESAPEAKE BAY, ON WESTERN SIDE OF
 JV5150'ENTRANCE TO TAVERN CREEK, ABOUT 5/8 MILE NE OF SWAN POINT, IN A
 JV5150'CULTIVATED FIELD ABOUT 7 FEET ABOVE HIGH WATER, 12 YARDS INSHORE,
 JV5150'AND 2 YARDS FROM EDGE OF BANK.  STATION MARK IS MARKED BY A HOLE
 JV5150'IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 JV5150'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 JV5150'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 JV5150'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH
 JV5150'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 JV5150'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 JV5150'ARE AS FOLLOWS--S ONE OF TWIN TREES ON LITTLE NECK ISLAND, 1/4
 JV5150'MILE, S 0 DEG 26 MIN W.  NAIL IN BLAZE IN 3-INCH LOCUST TREE,
 JV5150'10.39 METERS (34.1 FEET) S 63 DEG 31 MIN W.  CHIMNEY OF FISHING
 JV5150'SHACK ON SWAN POINT, 1/2 MILE, S 78 DEG 44 MIN W.  W GABLE OF
 JV5150'STRONGS BARN, 3/8 MILE, N 18 DEG 54 MIN W.  SW CORNER OF STRONGS
 JV5150'HOUSE, 3/8 MILE, N 1 DEG 36 MIN E.  CHIMNEY OF TENANT HOUSE, 3/4
 JV5150'MILE, N 40 DEG 22 MIN E.  N GABLE OF BARN, 1-3/8 MILES.  N 78 DEG
 JV5150'14 MIN E.  THOMPSONS WINDMILL, 1/2 MILE, S 80 DEG 46 MIN E.  W
 JV5150'GABLE ROCK HALL WHARF HOUSE, 3/8 MILE, S 78 DEG 25 MIN E.  N
 JV5150'GABLE OF DOWNEYS HOUSE, 1/2 MILE, S 73 DEG 44 MIN E. NAIL IN
 JV5150'BLAZE IN 4-INCH LOCUST TREE, 10.32 METERS (33.9 FEET), S 59 DEG 37
 JV5150'MIN E.
 JV5150
 JV5150                          STATION RECOVERY (1941)
 JV5150
 JV5150'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5150'RECOVERED IN GOOD CONDITION AT EDGE OF 6-FOOT BANK.  IT IS 11.5
 JV5150'METERS FROM BLAZE IN SYCAMORE ON W SIDE OF DUCKING SHANTY, 19.4
 JV5150'METERS NW OF NAIL IN BLAZE OF APPLE TREE ON SHORE IN FRONT OF
 JV5150'SHANTY, AND 2 METERS NE OF TWIN LOCUST AT HIGH-WATER LINE.
 JV5150'STATION IS ON S FIELD OF OLD SWAN POINT FARM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5758 ***********************************************************************
 JV5758  DESIGNATION -  BANK
 JV5758  PID         -  JV5758
 JV5758  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5758  COUNTRY     -  US
 JV5758  USGS QUAD   -  ROUND BAY (2016)
 JV5758
 JV5758                         *CURRENT SURVEY CONTROL
 JV5758  ______________________________________________________________________
 JV5758* NAD 83(1991) POSITION- 39 05 01.22951(N) 076 30 37.70938(W)   ADJUSTED
 JV5758* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5758  ______________________________________________________________________
 JV5758  GEOID HEIGHT    -        -33.155 (meters)                     GEOID18
 JV5758  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 JV5758  HORZ ORDER      -  THIRD
 JV5758
 JV5758.The horizontal coordinates were established by classical geodetic methods
 JV5758.and adjusted by the National Geodetic Survey in January 1992.
 JV5758
 JV5758.The orthometric height was scaled from a topographic map.
 JV5758
 JV5758.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5758.GEOID18 height accuracy estimate available here.
 JV5758
 JV5758.Click photographs - Photos may exist for this station.
 JV5758
 JV5758.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5758
 JV5758. The following values were computed from the NAD 83(1991) position.
 JV5758
 JV5758;                    North         East     Units Scale Factor Converg.
 JV5758;SPC MD       -   157,408.613   442,353.764   MT  0.99995641   +0 18 26.1
 JV5758;SPC MD       -   516,431.42  1,451,288.97   sFT  0.99995641   +0 18 26.1
 JV5758;UTM  18      - 4,327,147.962   369,356.390   MT  0.99981016   -0 57 08.7
 JV5758
 JV5758!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5758!SPC MD       -   1.00000508  x   0.99995641  =   0.99996149
 JV5758!UTM  18      -   1.00000508  x   0.99981016  =   0.99981524
 JV5758
 JV5758:                Primary Azimuth Mark                     Grid Az
 JV5758:SPC MD       -  HAM                                      138 10 40.9
 JV5758:UTM  18      -  HAM                                      139 26 15.7
 JV5758
 JV5758_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6935627147(NAD 83)
 JV5758
 JV5758|---------------------------------------------------------------------|
 JV5758| PID    Reference Object                     Distance      Geod. Az  |
 JV5758|                                                           dddmmss.s |
 JV5758| CA9948 BANK RM                              11.860 METERS 02545     |
 JV5758| JV5795 HAM                                 APPROX. 0.8 KM 1382907.0 |
 JV5758|---------------------------------------------------------------------|
 JV5758
 JV5758                          SUPERSEDED SURVEY CONTROL
 JV5758
 JV5758  NAD 83(1986)-  39 05 01.22567(N)    076 30 37.71977(W) AD(       ) 3
 JV5758  NAD 27      -  39 05 00.78400(N)    076 30 38.77600(W) AD(       ) 3
 JV5758  USSD        -  39 05 01.16900(N)    076 30 38.67500(W) AD(       ) 3
 JV5758
 JV5758.Superseded values are not recommended for survey control.
 JV5758
 JV5758.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5758.See file dsdata.pdf to determine how the superseded data were derived.
 JV5758
 JV5758
 JV5758  HISTORY     - Date     Condition        Report By
 JV5758  HISTORY     - 1898     MONUMENTED       CGS
 JV5758  HISTORY     - 1906     GOOD             CGS
 JV5758  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5758
 JV5758                          STATION DESCRIPTION
 JV5758
 JV5758'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5758'ON THE N SHORE OF UPPER MAGOTHY RIVER ABOUT 3/4 MILE NW FROM
 JV5758'MOUTH OF BLACKHOLE CREEK AND NEARLY OPPOSITE CYPRESS CREEK,
 JV5758'ON STONY POINT, AT THE BASE OF A BLUFF ABOUT 20 FEET HIGH.  IT
 JV5758'IS 2 FEET ABOVE AND 2 FEET BACK FROM HIGH-WATER MARK.  SEVERAL
 JV5758'LARGE BROWN BOULDERS ARE SCATTERED IN FRONT OF THE STATION.
 JV5758'STATION MARK IS 2- BY 3-INCH POLE SET IN A WOODEN BOX 3.5 FEET DEEP
 JV5758'WITH TOP OF BOX 4 INCHES ABOVE SURFACE OF GROUND.  REFERENCE
 JV5758'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5758'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 JV5758'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 JV5758'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 JV5758'COUNTER-SUNK IN TOP OF POST.  IT IS 11.86 METERS (38.9 FEET)
 JV5758'FROM STATION N 25 DEG 44 MIN E.  IT CAN NOT BE
 JV5758'SEEN FROM THE STATION.  A CEDAR TREE MARKED WITH NAIL IN
 JV5758'TRIANGULAR BLAZE IS 52 FEET ESE, AND A LARGE BOULDER 3 FEET S
 JV5758'FROM THE STATION.  DISTANCES AND BEARINGS FROM THE STATION
 JV5758'TO OTHER POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY ON CABIN
 JV5758'(OTHER SIDE OF RIVER), 3/4 MILE, S 23 DEG 32 MIN W.  CHIMNEY ON E
 JV5758'END OF HOUSE, 1/2 MILE, N 64 DEG 44 MIN W.
 JV5758
 JV5758                          STATION RECOVERY (1933)
 JV5758
 JV5758'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5758'STATION WAS LOCATED ON STONY POINT, JUST E OF THE SW CORNER, NOW
 JV5758'THE FRONT YARD OF DR. HUNNERS PROPERTY.  A CONCRETE RETAINING
 JV5758'WALL HAS BEEN BUILT AROUND THE WHOLE POINT TO PROTECT IT FROM
 JV5758'FURTHER WASHING.  THE BLUFF HAS BECOME A GENTLE SLOPE, THE
 JV5758'BROWN BOULDERS ARE ALL GONE.  THE MARYLAND SHELL FISH SURVEY
 JV5758'STANDARD CEMENT MONUMENT WAS FOUND LYING ON TOP OF THE GROUND
 JV5758'ON THE TOP OF THE BANK, AND COULD BE SEEN FROM THE BEACH.  IT
 JV5758'HAD EVIDENTLY BEEN EXCAVATED IN THE LANDSCAPING OF THE
 JV5758'PROPERTY.  NO OTHER REFERENCES COULD BE FOUND.  THE STATION,
 JV5758'MARKED BY A WOODEN POLE, WAS EITHER WASHED AWAY OR DESTROYED
 JV5758'DURING THE CONSTRUCTION OF THE WALL.  DR. HUNNER DOES NOT
 JV5758'REMEMBER EVER HEARING THIS PROPERTY CALLED STONY POINT, IT
 JV5758'IS NOW KNOWN AS PEA PATCH POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6486 ***********************************************************************
 HV6486  DESIGNATION -  BANKS
 HV6486  PID         -  HV6486
 HV6486  STATE/COUNTY-  MD/SOMERSET
 HV6486  COUNTRY     -  US
 HV6486  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6486
 HV6486                         *CURRENT SURVEY CONTROL
 HV6486  ______________________________________________________________________
 HV6486* NAD 83(1991) POSITION- 38 08 02.21044(N) 076 01 16.97078(W)   ADJUSTED
 HV6486* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6486  ______________________________________________________________________
 HV6486  GEOID HEIGHT    -        -35.750 (meters)                     GEOID18
 HV6486  LAPLACE CORR    -         -1.87  (seconds)                    DEFLEC18
 HV6486  HORZ ORDER      -  THIRD
 HV6486
 HV6486.The horizontal coordinates were established by classical geodetic methods
 HV6486.and adjusted by the National Geodetic Survey in January 1992.
 HV6486
 HV6486.The orthometric height was scaled from a topographic map.
 HV6486
 HV6486.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6486.GEOID18 height accuracy estimate available here.
 HV6486
 HV6486.Click photographs - Photos may exist for this station.
 HV6486
 HV6486.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6486
 HV6486. The following values were computed from the NAD 83(1991) position.
 HV6486
 HV6486;                    North         East     Units Scale Factor Converg.
 HV6486;SPC MD       -    52,330.512   485,799.148   MT  1.00003304   +0 36 51.2
 HV6486;SPC MD       -   171,687.69  1,593,826.04   sFT  1.00003304   +0 36 51.2
 HV6486;UTM  18      - 4,221,169.625   410,487.714   MT  0.99969868   -0 37 50.7
 HV6486
 HV6486!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6486!SPC MD       -   1.00000549  x   1.00003304  =   1.00003853
 HV6486!UTM  18      -   1.00000549  x   0.99969868  =   0.99970417
 HV6486
 HV6486_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1048721169(NAD 83)
 HV6486
 HV6486                          SUPERSEDED SURVEY CONTROL
 HV6486
 HV6486  NAD 83(1986)-  38 08 02.21021(N)    076 01 16.98974(W) AD(       ) 3
 HV6486  NAD 27      -  38 08 01.77800(N)    076 01 18.23400(W) AD(       ) 3
 HV6486
 HV6486.Superseded values are not recommended for survey control.
 HV6486
 HV6486.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6486.See file dsdata.pdf to determine how the superseded data were derived.
 HV6486
 HV6486_MARKER: DW = HYDROGRAPHIC STATION DISK
 HV6486_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6486_STAMPING: BANKS 1942
 HV6486_MARK LOGO: CGS
 HV6486_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6486+STABILITY: SURFACE MOTION
 HV6486
 HV6486  HISTORY     - Date     Condition        Report By
 HV6486  HISTORY     - 1942     MONUMENTED       CGS
 HV6486  HISTORY     - 1950     GOOD             CGS
 HV6486  HISTORY     - 1963     GOOD             LOCENG
 HV6486  HISTORY     - 1965     GOOD             LOCENG
 HV6486  HISTORY     - 1981     MARK NOT FOUND   MDDNR
 HV6486
 HV6486                          STATION DESCRIPTION
 HV6486
 HV6486'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6486'LOCATED ON THE N SHORE OF SOUTH MARSH ISLAND, ABOUT 1/4 MILE SE
 HV6486'OF A SMALL ISLAND KNOWN AS DEEP BANKS ISLAND.
 HV6486'
 HV6486'STATION MARK IS A BRONZE HYDROGRAPHIC-STATION DISK SET IN A
 HV6486'LENGTH OF 5-INCH STOVE PIPE SET IN A 12-INCH ROUND CONCRETE
 HV6486'MONUMENT.  IT IS STAMPED BANKS 1942 AND PROJECTS ABOUT 5 INCHES
 HV6486'ABOVE THE GROUND.
 HV6486
 HV6486                          STATION RECOVERY (1950)
 HV6486
 HV6486'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HV6486'STATION WAS RECOVERED IN GOOD CONDITION FROM TOPOGRAPHY OF A
 HV6486'BOAT SHEET.  A DESCRIPTION OF THE STATION WAS NOT AVAILABLE.
 HV6486'
 HV6486'STATION IS ON THE N PART OF SOUTH MARSH ISLAND, 400 YARDS SE
 HV6486'OF DEEP BANKS ISLAND.  MARK IS A STANDARD DISK, STAMPED BANKS
 HV6486'1942, AND SET IN A ROUNDED CONCRETE POST PROJECTING ABOUT 6
 HV6486'INCHES ABOVE THE GROUND IN A SMALL BARE AREA.
 HV6486'
 HV6486'BANKS IS SHOWN AS AN INTERSECTION STATION ON THE TRIANGULATION
 HV6486'DIAGRAM, APRIL 1948, CHESAPEAKE BAY, SMITH POINT TO COVE POINT.
 HV6486
 HV6486                          STATION RECOVERY (1963)
 HV6486
 HV6486'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1963
 HV6486'RECOVERED BY MDDCBA.
 HV6486'
 HV6486'STATION WAS RECOVERED IN EXCELLENT CONDITION.
 HV6486'
 HV6486'DESCRIPTION SHOULD BE CHANGED BY DELETING 1/4 MILE SE OF A
 HV6486'SMALL ISLAND KNOWN AS DEEP BANKS ISLAND.  THIS ISLAND NO LONGER
 HV6486'EXISTS.
 HV6486
 HV6486                          STATION RECOVERY (1965)
 HV6486
 HV6486'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1965 (GEH)
 HV6486'RECOVERED BY MDDCBA.
 HV6486'
 HV6486'STATION FOUND IN GOOD CONDITION.  DESCRIPTION O.K.
 HV6486'
 HV6486'DEPT. C.B.A. MAINTAINS SMALL WOODEN SIGNAL OVER STATION.
 HV6486
 HV6486                          STATION RECOVERY (1981)
 HV6486
 HV6486'RECOVERY NOTE BY MD DEPT OF NAT RES 1981 (LW)
 HV6486'STATION NOT FOUND.
 HV6486'
 HV6486'SEXTANT ANGLES PUT THIS STATION IN THE WATER.
 HV6486'
 HV6486'DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MI W DEALS IS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4840 ***********************************************************************
 HV4840  DESIGNATION -  BANN PB PP
 HV4840  PID         -  HV4840
 HV4840  STATE/COUNTY-  MD/MONTGOMERY
 HV4840  COUNTRY     -  US
 HV4840  USGS QUAD   -  FALLS CHURCH (2019)
 HV4840
 HV4840                         *CURRENT SURVEY CONTROL
 HV4840  ______________________________________________________________________
 HV4840* NAD 83(1993) POSITION- 38 58 23.89703(N) 077 08 17.63267(W)   ADJUSTED
 HV4840* NAVD 88 ORTHO HEIGHT -    93.    (meters)      305.    (feet) SCALED
 HV4840  ______________________________________________________________________
 HV4840  GEOID HEIGHT    -        -31.837 (meters)                     GEOID18
 HV4840  LAPLACE CORR    -         -1.74  (seconds)                    DEFLEC18
 HV4840  HORZ ORDER      -  SECOND
 HV4840
 HV4840.The horizontal coordinates were established by classical geodetic methods
 HV4840.and adjusted by the National Geodetic Survey in November 1994.
 HV4840
 HV4840.The orthometric height was scaled from a topographic map.
 HV4840
 HV4840.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4840.GEOID18 height accuracy estimate available here.
 HV4840
 HV4840.Click photographs - Photos may exist for this station.
 HV4840
 HV4840.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4840
 HV4840. The following values were computed from the NAD 83(1993) position.
 HV4840
 HV4840;                    North         East     Units Scale Factor Converg.
 HV4840;SPC MD       -   145,051.839   388,021.610   MT  0.99995129   -0 05 12.3
 HV4840;SPC MD       -   475,890.91  1,273,034.23   sFT  0.99995129   -0 05 12.3
 HV4840;SPC VA N     - 2,145,912.944 3,618,001.292   MT  0.99996762   +0 50 59.7
 HV4840;SPC VA N     - 7,040,382.72 11,870,059.24   sFT  0.99996762   +0 50 59.7
 HV4840;UTM  18      - 4,315,988.649   314,768.172   MT  1.00002250   -1 20 42.9
 HV4840
 HV4840!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4840!SPC MD       -   0.99999044  x   0.99995129  =   0.99994173
 HV4840!SPC VA N     -   0.99999044  x   0.99996762  =   0.99995806
 HV4840!UTM  18      -   0.99999044  x   1.00002250  =   1.00001294
 HV4840
 HV4840:                Primary Azimuth Mark                     Grid Az
 HV4840:SPC MD       -  ABBOTT PB PP                             144 47 25.5
 HV4840:SPC VA N     -  ABBOTT PB PP                             143 51 13.5
 HV4840:UTM  18      -  ABBOTT PB PP                             146 02 56.1
 HV4840
 HV4840_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1476815988(NAD 83)
 HV4840
 HV4840|---------------------------------------------------------------------|
 HV4840| PID    Reference Object                     Distance      Geod. Az  |
 HV4840|                                                           dddmmss.s |
 HV4840| HV4841 ABBOTT PB PP                        APPROX. 1.2 KM 1444213.2 |
 HV4840|---------------------------------------------------------------------|
 HV4840
 HV4840                          SUPERSEDED SURVEY CONTROL
 HV4840
 HV4840  NAD 83(1991)-  38 58 23.89618(N)    077 08 17.63430(W) AD(       ) 2
 HV4840  NAD 83(1986)-  38 58 23.89592(N)    077 08 17.64374(W) AD(       ) 2
 HV4840  NAD 27      -  38 58 23.50000(N)    077 08 18.71600(W) AD(       ) 2
 HV4840
 HV4840.Superseded values are not recommended for survey control.
 HV4840
 HV4840.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4840.See file dsdata.pdf to determine how the superseded data were derived.
 HV4840
 HV4840_MARKER: DD = SURVEY DISK
 HV4840_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV4840_MARK LOGO: PBPP
 HV4840_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4840
 HV4840  HISTORY     - Date     Condition        Report By
 HV4840  HISTORY     - 1930     MONUMENTED       PBPP
 HV4840
 HV4840                          STATION DESCRIPTION
 HV4840
 HV4840'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV4840'STATION IS ON MARYLAND SIDE OF POTOMAC RIVER, 0.4 MILE W OF
 HV4840'GLEN ECHO AMUSEMENT PARK, ON SMALL HILL JUST E OF BANNOCKBURN
 HV4840'GOLF CLUB.
 HV4840'
 HV4840'THIS STATION IS MARKED WITH A STANDARD P.B. AND P.P. TRIANGULATION
 HV4840'BRASS DISK SET IN 30-INCH TERRA COTTA PIPE FILLED WITH CONCRETE.
 HV4840'
 HV4840'THE UNDERGROUND MARK IS A 2-INCH SCREW SET IN 6 INCHES OF CONCRETE.
 HV4840'
 HV4840'THE AZIMUTH STATION IS A STANDARD P.B. AND P.P. BRASS DISK SET
 HV4840'IN A 30-INCH TILE POLE SET IN THE W SIDE OF THE FAIRWAY 646.03
 HV4840'FEET N OF STATION.
 HV4840'
 HV4840'THIS STATION IS BEST REACHED BY PROCEEDING W ON CONDUIT ROAD
 HV4840'TO BANNOCKBURN CLUB, TURNING N ON MACADAM ROAD TO CLUBHOUSE AND
 HV4840'RIGHT AT CLUBHOUSE ON DIRT ROAD TO STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1532 ***********************************************************************
 HU1532  DESIGNATION -  BAR
 HU1532  PID         -  HU1532
 HU1532  STATE/COUNTY-  MD/WORCESTER
 HU1532  COUNTRY     -  US
 HU1532  USGS QUAD   -  BERLIN (2016)
 HU1532
 HU1532                         *CURRENT SURVEY CONTROL
 HU1532  ______________________________________________________________________
 HU1532* NAD 83(1991) POSITION- 38 15 34.49075(N) 075 07 31.23865(W)   ADJUSTED
 HU1532* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU1532  ______________________________________________________________________
 HU1532  GEOID HEIGHT    -        -36.139 (meters)                     GEOID18
 HU1532  LAPLACE CORR    -         -0.16  (seconds)                    DEFLEC18
 HU1532  HORZ ORDER      -  THIRD
 HU1532
 HU1532.The horizontal coordinates were established by classical geodetic methods
 HU1532.and adjusted by the National Geodetic Survey in January 1992.
 HU1532
 HU1532.The orthometric height was scaled from a topographic map.
 HU1532
 HU1532.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1532.GEOID18 height accuracy estimate available here.
 HU1532
 HU1532.Click photographs - Photos may exist for this station.
 HU1532
 HU1532.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1532
 HU1532. The following values were computed from the NAD 83(1991) position.
 HU1532
 HU1532;                    North         East     Units Scale Factor Converg.
 HU1532;SPC MD       -    67,500.852   564,063.219   MT  1.00000728   +1 10 35.8
 HU1532;SPC MD       -   221,459.05  1,850,597.41   sFT  1.00000728   +1 10 35.8
 HU1532;UTM  18      - 4,234,624.110   489,034.028   MT  0.99960148   -0 04 39.4
 HU1532
 HU1532!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1532!SPC MD       -   1.00000539  x   1.00000728  =   1.00001267
 HU1532!UTM  18      -   1.00000539  x   0.99960148  =   0.99960687
 HU1532
 HU1532:                Primary Azimuth Mark                     Grid Az
 HU1532:SPC MD       -  FASSETT                                  329 46 33.6
 HU1532:UTM  18      -  FASSETT                                  331 01 48.8
 HU1532
 HU1532_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8903434624(NAD 83)
 HU1532
 HU1532|---------------------------------------------------------------------|
 HU1532| PID    Reference Object                     Distance      Geod. Az  |
 HU1532|                                                           dddmmss.s |
 HU1532| DC7806 BAR RM 1                             13.001 METERS 20348     |
 HU1532| HU1535 LONGWELLS WINDMILL                  APPROX. 2.6 KM 2591314.1 |
 HU1532| DC7807 BAR RM 2                             10.137 METERS 32436     |
 HU1532| HU1533 FASSETT                             APPROX. 2.1 KM 3305709.4 |
 HU1532|---------------------------------------------------------------------|
 HU1532
 HU1532                          SUPERSEDED SURVEY CONTROL
 HU1532
 HU1532  NAD 83(1986)-  38 15 34.47469(N)    075 07 31.27064(W) AD(       ) 3
 HU1532  NAD 27      -  38 15 34.05398(N)    075 07 32.59672(W) AD(       ) 3
 HU1532  USSD        -  38 15 34.21600(N)    075 07 32.39000(W) AD(       ) 3
 HU1532
 HU1532.Superseded values are not recommended for survey control.
 HU1532
 HU1532.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1532.See file dsdata.pdf to determine how the superseded data were derived.
 HU1532
 HU1532_MARKER: H = DRILL HOLE
 HU1532_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1532
 HU1532  HISTORY     - Date     Condition        Report By
 HU1532  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1532  HISTORY     - 1933     GOOD             CGS
 HU1532  HISTORY     - 1934     MARK NOT FOUND   CGS
 HU1532  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1532  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1532  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU1532
 HU1532                          STATION DESCRIPTION
 HU1532
 HU1532'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1532'ON THE EASTERN SHORE OF SINEPUXENT BAY, ABOUT MIDWAY BETWEEN BAY
 HU1532'AND OCEAN AND ABOUT 5-1/4 MILES SSW OF OCEAN CITY, ON SAND AND
 HU1532'GRASS BEACH LAND ABOUT 3 FEET ABOVE HIGH WATER, 110 YARDS W OF
 HU1532'TOP OF SAND DUNES, AND 5 YARDS E OF LINE OF LIFE SAVING SERVICE
 HU1532'TELEPHONE POLES.
 HU1532'
 HU1532'STATION IS MARKED BY CENTER OF STANDARD CEMENT MONUMENT OF THE
 HU1532'MARYLAND SHELL FISH SURVEY WHICH PROJECTS 3 TO 5 INCHES ABOVE
 HU1532'GROUND WHICH IS MADE OF CONCRETE 2
 HU1532'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1532'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1532'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1532'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1532'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1532'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1532'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1532'THE LOCATION OF THE STATION.
 HU1532'
 HU1532'DISTANCES AND AZIMUTHS OF POINTS OF REFERENCE ARE AS
 HU1532'FOLLOWS--SOUTHERLY CHIMNEY OF HENRYS BRICK HOUSE, 1-1/4 MILES,
 HU1532'61 DEG 43 MIN W.  CHIMNEY ON NORTHERLY END OF ROOF WITH TWO GABLE
 HU1532'WINDOWS 2 MILES, N 31 DEG 43 MIN W.  CHIMNEY ON MIDDLE OF RED-ROOFED
 HU1532'WHITE HOUSE, 2-3/8 MILES, N 28 DEG 34 MIN W.  LEFT CHIMNEY OF LARGE
 HU1532'WHITE HOUSE, 2-3/8 MILES, N 26 DEG 49 MIN W.  CHIMNEY ON SOUTHERLY
 HU1532'CORNER OF FOUR-SIDED ROOF OF GRAY HOUSE, 2-1/2 MILES, N 17 DEG
 HU1532'56 MIN W.  BAKERS WINDMILL, 3-1/2 MILES, N 6 DEG 00 MIN E.
 HU1532'TELEPHONE POLE, 32 YARDS, N 14 DEG 12 MIN E.  ETELEPHONE POLE, 65
 HU1532'YARDS, S 29 DEG 29 MIN W.  MIDDLE OF ROOF OF LONGWELLS HOUSE, 1
 HU1532'1/2 MILES, S 78 DEG 32 MIN W.
 HU1532
 HU1532                          STATION RECOVERY (1933)
 HU1532
 HU1532'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (IER)
 HU1532'TRIANGULATION STATION FOUND IN EXCELLENT CONDITION.  DESCRIPTION
 HU1532'AS ADEQUATE AS CAN BE GIVEN.
 HU1532'
 HU1532'TWO REFERENCE MARKS SET.
 HU1532'
 HU1532'REFERENCE MARKS STAMPED NO.1 1933 AND NO.2 1933 RESPECTIVELY, AND
 HU1532'ARE STANDARD BRONZE DISKS SET IN CONCRETE, IN THE TOP OF A TILE,
 HU1532'AS DESCRIBED.
 HU1532'
 HU1532'STATION IS ON THE E SHORE OF SINEPUXENT BAY, ABOUT MIDWAY
 HU1532'BETWEEN BAY AND OCEAN, ABOUT 5-1/4 MILES SSW OF OCEAN CITY, ON
 HU1532'SAND AND GRASS LAND ABOUT 3 FEET ABOVE HIGH WATER, APPROXIMATELY
 HU1532'100 YARDS W OF TOP OF SAND DUNES AND NEAR COAST GUARD TELEPHONE
 HU1532'LINE.
 HU1532
 HU1532                          STATION RECOVERY (1934)
 HU1532
 HU1532'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1532'STATION AND REFERENCE MARK NO.1 COULD NOT BE FOUND AFTER A
 HU1532'THOROUGH SEARCH AND MUCH DIGGING IN THE SAND.
 HU1532'
 HU1532'REFERENCE MARK NO.2 WAS RECOVERED IN GOOD CONDITION AND
 HU1532'APPARENTLY IN PLACE.  THE BEACH HAS BEEN BADLY WASHED IN THIS
 HU1532'VICINITY BY THE STORM OF AUGUST 1933, AND THE MARKS WERE EITHER
 HU1532'WASHED OUT OR COVERED TO A CONSIDERABLE DEPTH BY SAND.
 HU1532
 HU1532                          STATION RECOVERY (1942)
 HU1532
 HU1532'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1532'THE STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR 1-1/2
 HU1532'HOURS, BUT WAS NOT RECOVERED.  CONSIDERABLE CHANGE HAS TAKEN PLACE
 HU1532'IN THE AREA DUE TO STORMS AND SEVERE WEATHER.  THIS STATION IS
 HU1532'PROBABLY DESTROYED.
 HU1532
 HU1532                          STATION RECOVERY (1962)
 HU1532
 HU1532'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1532'STATION MARK AND REFERENCE MARKS WERE NOT RECOVERED AFTER A
 HU1532'THOROUGH SEARCH OF THE AREA.
 HU1532'
 HU1532'THE MARKS HAVE EITHER BEEN DESTROYED OR, ARE COVERED BY SAND TO
 HU1532'SUCH A DEPTH THAT FUTURE RECOVERY IS DOUBTFUL.
 HU1532
 HU1532                          STATION RECOVERY (2003)
 HU1532
 HU1532'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU1532'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1892 ***********************************************************************
 HU1892  DESIGNATION -  BAR
 HU1892  PID         -  HU1892
 HU1892  STATE/COUNTY-  MD/SOMERSET
 HU1892  COUNTRY     -  US
 HU1892  USGS QUAD   -  DEAL ISLAND (2016)
 HU1892
 HU1892                         *CURRENT SURVEY CONTROL
 HU1892  ______________________________________________________________________
 HU1892* NAD 83(1993) POSITION- 38 08 28.70856(N) 075 57 33.07820(W)   ADJUSTED
 HU1892* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1892  ______________________________________________________________________
 HU1892  GEOID HEIGHT    -        -35.806 (meters)                     GEOID18
 HU1892  LAPLACE CORR    -         -2.08  (seconds)                    DEFLEC18
 HU1892  HORZ ORDER      -  THIRD
 HU1892
 HU1892.The horizontal coordinates were established by classical geodetic methods
 HU1892.and adjusted by the National Geodetic Survey in November 1994.
 HU1892
 HU1892.The orthometric height was scaled from a topographic map.
 HU1892
 HU1892.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1892.GEOID18 height accuracy estimate available here.
 HU1892
 HU1892.Click photographs - Photos may exist for this station.
 HU1892
 HU1892.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1892
 HU1892. The following values were computed from the NAD 83(1993) position.
 HU1892
 HU1892;                    North         East     Units Scale Factor Converg.
 HU1892;SPC MD       -    53,207.814   491,242.239   MT  1.00003140   +0 39 11.7
 HU1892;SPC MD       -   174,565.97  1,611,683.91   sFT  1.00003140   +0 39 11.7
 HU1892;UTM  18      - 4,221,928.166   415,946.732   MT  0.99968701   -0 35 32.8
 HU1892
 HU1892!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1892!SPC MD       -   1.00000566  x   1.00003140  =   1.00003706
 HU1892!UTM  18      -   1.00000566  x   0.99968701  =   0.99969267
 HU1892
 HU1892:                Primary Azimuth Mark                     Grid Az
 HU1892:SPC MD       -  JOSHUA                                   160 13 26.8
 HU1892:UTM  18      -  JOSHUA                                   161 28 11.3
 HU1892
 HU1892_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1594621928(NAD 83)
 HU1892
 HU1892|---------------------------------------------------------------------|
 HU1892| PID    Reference Object                     Distance      Geod. Az  |
 HU1892|                                                           dddmmss.s |
 HU1892| HU1890 DEAL ISLAND CHURCH SPIRE            APPROX. 1.8 KM 0312252.3 |
 HU1892| DC7805 BAR RM                                6.090 METERS 08730     |
 HU1892| HU1887 JOSHUA                              APPROX. 2.9 KM 1605238.5 |
 HU1892|---------------------------------------------------------------------|
 HU1892
 HU1892                          SUPERSEDED SURVEY CONTROL
 HU1892
 HU1892  NAD 83(1991)-  38 08 28.70788(N)    075 57 33.07861(W) AD(       ) 3
 HU1892  NAD 83(1986)-  38 08 28.70808(N)    075 57 33.09785(W) AD(       ) 3
 HU1892  NAD 27      -  38 08 28.26600(N)    075 57 34.33100(W) AD(       ) 3
 HU1892  USSD        -  38 08 28.63500(N)    075 57 34.06200(W) AD(       ) 3
 HU1892
 HU1892.Superseded values are not recommended for survey control.
 HU1892
 HU1892.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1892.See file dsdata.pdf to determine how the superseded data were derived.
 HU1892
 HU1892_MARKER: N = NAIL
 HU1892_SETTING: 0 = UNSPECIFIED SETTING
 HU1892
 HU1892  HISTORY     - Date     Condition        Report By
 HU1892  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1892  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1892
 HU1892                          STATION DESCRIPTION
 HU1892
 HU1892'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1892'STATION IS ON THE EASTERN SHORE OF TANGIER SOUND, ON THE WESTERN
 HU1892'SIDE OF DEAL ISLAND, ABOUT 1 MILE NW OF ENTRANCE TO LOWER
 HU1892'THOROUGHFARE AND 1/2 MILE S OF MIDDLE CREEK.  IT IS ABOUT 10 YARDS
 HU1892'E OF HIGH-WATER MARK, ON SAND AND GRASSLAND BACK OF SANDY
 HU1892'BEACH.  THE FIRST OF MANY TREE STUMPS WHICH ARE SUBMERGED AT
 HU1892'HIGH WATER COMMENCE ABOUT 100 YARDS TO THE N OF THE STATION, AND
 HU1892'CAT-TAILS GROW ABUNDANTLY BACK OF STATION.  CENTER MARK IS A
 HU1892'NAIL IN PINE STUB FLUSH WITH THE GROUND.  REFERENCE MARK IS
 HU1892'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HU1892'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 HU1892'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HU1892'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 HU1892'IS 6.09 METERS (19.98 FEET) FROM THE STATION,
 HU1892'N 87 DEG 30 MIN E.  OTHER DISTANCES AND BEARINGS ARE AS
 HU1892'FOLLOWS--FLAGPOLE ON LARGE BUILDING ON DEAL ISLAND WHARF, 2
 HU1892'MILES, N 09 DEG 05 MIN E.  MIDDLE CHIMNEY OF LARGE GRAY
 HU1892'BUILDING, 1 MILE, N 18 DEG 01 MIN E.  CHIMNEY ON WHITE HOUSE,
 HU1892'400 YARDS, N 40 DEG 14 MIN E.  MIDDLE CHIMNEY ON RED-ROOF
 HU1892'WHITE HOUSE, 3/8 MILE, N 60 DEG 11 MIN E.  CHIMNEY ON WHITE
 HU1892'HOUSE, 400 YARDS, S 80 DEG 57 MIN E.  CHIMNEY ON DARK-GRAY
 HU1892'HOUSE, 300 YARDS, S 37 DEG 43 MIN E.  RIGHT CHIMNEY ON WHITE
 HU1892'FOUR-GABLED HOUSE WITH RED ROOF, 1/2 MILE, S 23 DEG 01 MIN E.
 HU1892
 HU1892                          STATION RECOVERY (1942)
 HU1892
 HU1892'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1892'THE VICINITY OF THIS STATION WAS VISITED BUT THE STATION WAS NOT
 HU1892'RECOVERED.  THE FORMER LOCATION OF THE STATION WAS POINTED OUT
 HU1892'BY JOHN PARKINSON, A LIFETIME RESIDENT ON THE ISLAND, AND JAMES
 HU1892'WHITE, A RESIDENT ON THE ISLAND FOR 40 YEARS.  THEY RECALL THE
 HU1892'ESTABLISHMENT OF THE STATION, AND KNEW OF ITS DEFINITE
 HU1892'LOCATION.  THEY CLAIM THE SHORELINE HAS RECEDED CONSIDERABLY
 HU1892'(SINCE THE ESTABLISHMENT OF THE STATION) AND BEYOND THE POINT
 HU1892'OF LOCATION.
 HU1892'
 HU1892'IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6298 ***********************************************************************
 HV6298  DESIGNATION -  BAR
 HV6298  PID         -  HV6298
 HV6298  STATE/COUNTY-  MD/QUEEN ANNES
 HV6298  COUNTRY     -  US
 HV6298  USGS QUAD   -  DEALE OE E (2016)
 HV6298
 HV6298                         *CURRENT SURVEY CONTROL
 HV6298  ______________________________________________________________________
 HV6298* NAD 83(1991) POSITION- 38 50 16.53133(N) 076 22 36.21242(W)   ADJUSTED
 HV6298* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6298  ______________________________________________________________________
 HV6298  GEOID HEIGHT    -        -33.806 (meters)                     GEOID18
 HV6298  LAPLACE CORR    -         -4.83  (seconds)                    DEFLEC18
 HV6298  HORZ ORDER      -  THIRD
 HV6298
 HV6298.The horizontal coordinates were established by classical geodetic methods
 HV6298.and adjusted by the National Geodetic Survey in January 1992.
 HV6298
 HV6298.The orthometric height was scaled from a topographic map.
 HV6298
 HV6298.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6298.GEOID18 height accuracy estimate available here.
 HV6298
 HV6298.Click photographs - Photos may exist for this station.
 HV6298
 HV6298.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6298
 HV6298. The following values were computed from the NAD 83(1991) position.
 HV6298
 HV6298;                    North         East     Units Scale Factor Converg.
 HV6298;SPC MD       -   130,199.282   454,111.850   MT  0.99995007   +0 23 28.3
 HV6298;SPC MD       -   427,162.14  1,489,865.29   sFT  0.99995007   +0 23 28.3
 HV6298;UTM  18      - 4,299,691.590   380,512.937   MT  0.99977581   -0 51 48.5
 HV6298
 HV6298!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6298!SPC MD       -   1.00000519  x   0.99995007  =   0.99995525
 HV6298!UTM  18      -   1.00000519  x   0.99977581  =   0.99978099
 HV6298
 HV6298:                Primary Azimuth Mark                     Grid Az
 HV6298:SPC MD       -  SAMOHT                                   319 05 32.3
 HV6298:UTM  18      -  SAMOHT                                   320 20 49.1
 HV6298
 HV6298_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8051299691(NAD 83)
 HV6298
 HV6298|---------------------------------------------------------------------|
 HV6298| PID    Reference Object                     Distance      Geod. Az  |
 HV6298|                                                           dddmmss.s |
 HV6298| HV6319 SAMOHT                              APPROX.10.3 KM 3192900.6 |
 HV6298|---------------------------------------------------------------------|
 HV6298
 HV6298                          SUPERSEDED SURVEY CONTROL
 HV6298
 HV6298  NAD 83(1986)-  38 50 16.52779(N)    076 22 36.22543(W) AD(       ) 3
 HV6298  NAD 27      -  38 50 16.10200(N)    076 22 37.39700(W) AD(       ) 3
 HV6298
 HV6298.Superseded values are not recommended for survey control.
 HV6298
 HV6298.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6298.See file dsdata.pdf to determine how the superseded data were derived.
 HV6298
 HV6298_MARKER: DS = TRIANGULATION STATION DISK
 HV6298_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6298_STAMPING: BAR 1932
 HV6298_MARK LOGO: CGS
 HV6298_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6298+STABILITY: SURFACE MOTION
 HV6298
 HV6298  HISTORY     - Date     Condition        Report By
 HV6298  HISTORY     - 1932     MONUMENTED       CGS
 HV6298
 HV6298                          STATION DESCRIPTION
 HV6298
 HV6298'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (JAB)
 HV6298'ON THE SW POINT OF KENT ISLAND, 3/4 MILE ENE OF BLOODY POINT BAR
 HV6298'LIGHTHOUSE.  THE STATION IS ON MARSHLAND.
 HV6298'
 HV6298'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6298'CONCRETE.
 HV6298'
 HV6298'THE FOLLOWING DISTANCES WERE MEASURED TO HIGH WATER LINE--
 HV6298'
 HV6298'STATION TO HIGH-WATER LINE ON RANGE WITH KENT POINT, 50
 HV6298'METERS.  STATION TO HIGH-WATER LINE ON RANGE WITH BLOODY POINT
 HV6298'BAR LIGHTHOUSE, 16.5 METERS.  STATION TO HIGH-WATER LINE ON
 HV6298'RANGE WITH THOMAS POINT LIGHTHOUSE, 30.5 METERS.  STATION TO
 HV6298'HIGH-WATER LINE ON RANGE WITH BLOODY POINT, 83 METERS.
 HV6298'
 HV6298'HEIGHT OF SIGNAL ABOVE STATION MARK - 5 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6429 ***********************************************************************
 HV6429  DESIGNATION -  BAR
 HV6429  PID         -  HV6429
 HV6429  STATE/COUNTY-  MD/DORCHESTER
 HV6429  COUNTRY     -  US
 HV6429  USGS QUAD   -  HONGA (2016)
 HV6429
 HV6429                         *CURRENT SURVEY CONTROL
 HV6429  ______________________________________________________________________
 HV6429* NAD 83(1991) POSITION- 38 18 39.01748(N) 076 14 31.56702(W)   ADJUSTED
 HV6429* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6429  ______________________________________________________________________
 HV6429  GEOID HEIGHT    -        -35.106 (meters)                     GEOID18
 HV6429  LAPLACE CORR    -         -6.17  (seconds)                    DEFLEC18
 HV6429  HORZ ORDER      -  THIRD
 HV6429
 HV6429.The horizontal coordinates were established by classical geodetic methods
 HV6429.and adjusted by the National Geodetic Survey in January 1992.
 HV6429
 HV6429.The orthometric height was scaled from a topographic map.
 HV6429
 HV6429.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6429.GEOID18 height accuracy estimate available here.
 HV6429
 HV6429.Click photographs - Photos may exist for this station.
 HV6429
 HV6429.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6429
 HV6429. The following values were computed from the NAD 83(1991) position.
 HV6429
 HV6429;                    North         East     Units Scale Factor Converg.
 HV6429;SPC MD       -    71,781.076   466,285.205   MT  0.99999813   +0 28 32.5
 HV6429;SPC MD       -   235,501.75  1,529,804.04   sFT  0.99999813   +0 28 32.5
 HV6429;UTM  18      - 4,241,033.849   391,406.692   MT  0.99974523   -0 46 12.3
 HV6429
 HV6429!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6429!SPC MD       -   1.00000539  x   0.99999813  =   1.00000352
 HV6429!UTM  18      -   1.00000539  x   0.99974523  =   0.99975062
 HV6429
 HV6429:                Primary Azimuth Mark                     Grid Az
 HV6429:SPC MD       -  DOG                                      100 06 59.3
 HV6429:UTM  18      -  DOG                                      101 21 44.1
 HV6429
 HV6429_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9140641033(NAD 83)
 HV6429
 HV6429|---------------------------------------------------------------------|
 HV6429| PID    Reference Object                     Distance      Geod. Az  |
 HV6429|                                                           dddmmss.s |
 HV6429| HV6425 DOG                                 APPROX. 1.5 KM 1003531.8 |
 HV6429| CX2058 BAR RM                               24.944 METERS 28036     |
 HV6429|---------------------------------------------------------------------|
 HV6429
 HV6429                          SUPERSEDED SURVEY CONTROL
 HV6429
 HV6429  NAD 83(1986)-  38 18 39.01686(N)    076 14 31.58376(W) AD(       ) 3
 HV6429  NAD 27      -  38 18 38.56900(N)    076 14 32.78600(W) AD(       ) 3
 HV6429
 HV6429.Superseded values are not recommended for survey control.
 HV6429
 HV6429.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6429.See file dsdata.pdf to determine how the superseded data were derived.
 HV6429
 HV6429_MARKER: DS = TRIANGULATION STATION DISK
 HV6429_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6429_STAMPING: BAR 1929
 HV6429_MARK LOGO: CGS
 HV6429_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6429+STABILITY: SURFACE MOTION
 HV6429
 HV6429  HISTORY     - Date     Condition        Report By
 HV6429  HISTORY     - 1929     MONUMENTED       CGS
 HV6429  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6429
 HV6429                          STATION DESCRIPTION
 HV6429
 HV6429'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (JS)
 HV6429'THIS STATION IS LOCATED ON THE SE TIP OF BARREN ISLAND.  THE POINT
 HV6429'OF LAND IS SANDY, LOW, AND COVERED WITH LOW BUSHES.  THE STATION
 HV6429'IS 10 METERS W OF THE EXTREME POINT, 4 METERS N OF THE SOUTHERN
 HV6429'SHORE LINE, AND 10 METERS S OF NORTHERN SHORE LINE.
 HV6429'
 HV6429'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6429'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HV6429'
 HV6429'THE UNDERGROUND MARK IS A BLOCK OF CONCRETE BELOW THE GROUND
 HV6429'CONTAINING A GLASS BOTTLE AS DESCRIBED IN NOTE 7D.
 HV6429'
 HV6429'IT IS UNCERTAIN WHETHER THE DISTANCES GIVEN ARE IN METERS OR FEET.
 HV6429
 HV6429                          STATION RECOVERY (1942)
 HV6429
 HV6429'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6429'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE HOUR,
 HV6429'BUT NO TRACE OF IT COULD BE FOUND.  THIS STATION HAS PROBABLY
 HV6429'BEEN WASHED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5412 ***********************************************************************
 JV5412  DESIGNATION -  BAR
 JV5412  PID         -  JV5412
 JV5412  STATE/COUNTY-  MD/BALTIMORE
 JV5412  COUNTRY     -  US
 JV5412  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5412
 JV5412                         *CURRENT SURVEY CONTROL
 JV5412  ______________________________________________________________________
 JV5412* NAD 83(1991) POSITION- 39 15 13.85192(N) 076 26 12.22056(W)   ADJUSTED
 JV5412* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5412  ______________________________________________________________________
 JV5412  GEOID HEIGHT    -        -33.022 (meters)                     GEOID18
 JV5412  LAPLACE CORR    -         -1.02  (seconds)                    DEFLEC18
 JV5412  HORZ ORDER      -  SECOND
 JV5412
 JV5412.The horizontal coordinates were established by classical geodetic methods
 JV5412.and adjusted by the National Geodetic Survey in January 1992.
 JV5412
 JV5412.The orthometric height was scaled from a topographic map.
 JV5412
 JV5412.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5412.GEOID18 height accuracy estimate available here.
 JV5412
 JV5412.Click photographs - Photos may exist for this station.
 JV5412
 JV5412.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5412
 JV5412. The following values were computed from the NAD 83(1991) position.
 JV5412
 JV5412;                    North         East     Units Scale Factor Converg.
 JV5412;SPC MD       -   176,336.726   448,617.712   MT  0.99997157   +0 21 12.7
 JV5412;SPC MD       -   578,531.41  1,471,839.94   sFT  0.99997157   +0 21 12.7
 JV5412;UTM  18      - 4,345,930.539   376,034.351   MT  0.99978922   -0 54 33.2
 JV5412
 JV5412!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5412!SPC MD       -   1.00000507  x   0.99997157  =   0.99997664
 JV5412!UTM  18      -   1.00000507  x   0.99978922  =   0.99979429
 JV5412
 JV5412:                Primary Azimuth Mark                     Grid Az
 JV5412:SPC MD       -  LYNCH                                    198 25 21.0
 JV5412:UTM  18      -  LYNCH                                    199 41 06.9
 JV5412
 JV5412_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7603445930(NAD 83)
 JV5412
 JV5412|---------------------------------------------------------------------|
 JV5412| PID    Reference Object                     Distance      Geod. Az  |
 JV5412|                                                           dddmmss.s |
 JV5412| CA9949 BAR RM 1                             26.390 METERS 06204     |
 JV5412| JV5271 LYNCH                               APPROX. 0.9 KM 1984633.7 |
 JV5412|---------------------------------------------------------------------|
 JV5412
 JV5412                          SUPERSEDED SURVEY CONTROL
 JV5412
 JV5412  NAD 83(1986)-  39 15 13.84727(N)    076 26 12.22943(W) AD(       ) 2
 JV5412  NAD 27      -  39 15 13.46200(N)    076 26 13.38400(W) AD(       ) 2
 JV5412
 JV5412.Superseded values are not recommended for survey control.
 JV5412
 JV5412.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5412.See file dsdata.pdf to determine how the superseded data were derived.
 JV5412
 JV5412_MARKER: DS = TRIANGULATION STATION DISK
 JV5412_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5412_STAMPING: BAR 1934
 JV5412_MARK LOGO: CGS
 JV5412_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5412+STABILITY: SURFACE MOTION
 JV5412
 JV5412  HISTORY     - Date     Condition        Report By
 JV5412  HISTORY     - 1934     MONUMENTED       CGS
 JV5412  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5412  HISTORY     - 19950725 MARK NOT FOUND   USPSQD
 JV5412
 JV5412                          STATION DESCRIPTION
 JV5412
 JV5412'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5412'ON THE NORTHERN SHORE OF BACK RIVER, ON PORTER BAR POINT, IN
 JV5412'GRASS-COVERED MARSH, 100 FEET N FROM END OF POINT, 25 FEET E OF
 JV5412'HIGH-WATER LINE.  STATION IS IN RANGE WITH LINE OF ELECTRIC POWER
 JV5412'POLES RUNNING NE AND SW.
 JV5412'
 JV5412'STATION AND REFERENCE MARK ARE STANDARD BRONZE DISKS SET IN
 JV5412'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5412'
 JV5412'REFERENCE MARK IS IN RANGE WITH STATION AND THE LINE OF POLES.
 JV5412
 JV5412                          STATION RECOVERY (1961)
 JV5412
 JV5412'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5412'NO TRACE OF THE STATION OR REFERENCE MARK COULD BE FOUND.  THE
 JV5412'MARSH HAS BEEN FILLED IN AND HOUSES HAVE BEEN CONSTRUCTED ON IT.
 JV5412
 JV5412                          STATION RECOVERY (1995)
 JV5412
 JV5412'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5412'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8201 ***********************************************************************
 DH8201  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8201  DESIGNATION -  BARBADOS SITE EAST SET
 DH8201  PID         -  DH8201
 DH8201  STATE/COUNTY-  MD/DORCHESTER
 DH8201  COUNTRY     -  US
 DH8201  USGS QUAD   -  BLACKWATER RIVER (2016)
 DH8201
 DH8201                         *CURRENT SURVEY CONTROL
 DH8201  ______________________________________________________________________
 DH8201* NAD 83(2011) POSITION- 38 24 56.12646(N) 076 05 11.39163(W)   ADJUSTED
 DH8201* NAD 83(2011) ELLIP HT-   -34.893 (meters)        (06/27/12)   ADJUSTED
 DH8201* NAD 83(2011) EPOCH   -  2010.00
 DH8201* NAVD 88 ORTHO HEIGHT -     0.37  (meters)        1.2   (feet) GPS OBS
 DH8201  ______________________________________________________________________
 DH8201  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8201  GEOID HEIGHT    -        -35.225 (meters)                     GEOID03
 DH8201  GEOID HEIGHT    -        -35.262 (meters)                     GEOID18
 DH8201  NAD 83(2011) X  -  1,203,214.416 (meters)                     COMP
 DH8201  NAD 83(2011) Y  - -4,857,055.157 (meters)                     COMP
 DH8201  NAD 83(2011) Z  -  3,941,670.483 (meters)                     COMP
 DH8201  LAPLACE CORR    -         -2.36  (seconds)                    DEFLEC18
 DH8201
 DH8201  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8201  Standards:
 DH8201         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8201            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8201  -------------------------------------------------------------------
 DH8201  NETWORK    0.92   2.08           0.41   0.33   1.06      0.06990758
 DH8201  -------------------------------------------------------------------
 DH8201  Click here for local accuracies and other accuracy information.
 DH8201
 DH8201.The horizontal coordinates were established by GPS observations
 DH8201.and adjusted by the National Geodetic Survey in June 2012.
 DH8201
 DH8201.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8201.been affixed to the stable North American tectonic plate. See 
 DH8201.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8201
 DH8201.The horizontal coordinates are valid at the epoch date displayed above
 DH8201.which is a decimal equivalence of Year/Month/Day.
 DH8201
 DH8201.The orthometric height was determined by GPS observations and a
 DH8201.high-resolution geoid model using precise GPS observation and
 DH8201.processing techniques.
 DH8201
 DH8201.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8201.GEOID18 height accuracy estimate available here.
 DH8201
 DH8201.Click photographs - Photos may exist for this station.
 DH8201
 DH8201.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8201
 DH8201.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8201
 DH8201.The ellipsoidal height was determined by GPS observations
 DH8201.and is referenced to NAD 83.
 DH8201
 DH8201. The following values were computed from the NAD 83(2011) position.
 DH8201
 DH8201;                    North         East     Units Scale Factor Converg.
 DH8201;SPC MD       -    83,532.837   479,777.471   MT  0.99998190   +0 34 24.0
 DH8201;SPC MD       -   274,057.32  1,574,069.92   sFT  0.99998190   +0 34 24.0
 DH8201;UTM  18      - 4,252,486.156   405,147.942   MT  0.99971080   -0 40 30.6
 DH8201
 DH8201!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8201!SPC MD       -   1.00000547  x   0.99998190  =   0.99998737
 DH8201!UTM  18      -   1.00000547  x   0.99971080  =   0.99971627
 DH8201
 DH8201_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0514752486(NAD 83)
 DH8201
 DH8201                          SUPERSEDED SURVEY CONTROL
 DH8201
 DH8201  NAD 83(2007)-  38 24 56.12664(N)    076 05 11.39247(W) AD(2002.00) B
 DH8201  ELLIP H (02/12/09)  -34.869  (m)                       GP(2002.00) 5 1
 DH8201  NAD 83(1991)-  38 24 56.12680(N)    076 05 11.39205(W) AD(       ) B
 DH8201  ELLIP H (02/28/06)  -34.864  (m)                       GP(       ) 5 1
 DH8201
 DH8201.Superseded values are not recommended for survey control.
 DH8201
 DH8201.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8201.See file dsdata.pdf to determine how the superseded data were derived.
 DH8201
 DH8201_MARKER: Z = SEE DESCRIPTION
 DH8201_SETTING: 0 = UNSPECIFIED SETTING
 DH8201_SP_SET: TBD
 DH8201_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH8201_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8201+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2005
 DH8201
 DH8201  HISTORY     - Date     Condition        Report By
 DH8201  HISTORY     - 20050920 MONUMENTED       USGS
 DH8201
 DH8201                          STATION DESCRIPTION
 DH8201
 DH8201'DESCRIBED BY US GEOLOGICAL SURVEY 2005 (GS)
 DH8201'NO DESCRIPTION PUBLISHED AS MARK IS UNAVAILABLE EXCEPT TO OFFICIAL
 DH8201'RESEARCH PERSONNEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7032 ***********************************************************************
 HV7032  DESIGNATION -  BARBER 1908
 HV7032  PID         -  HV7032
 HV7032  STATE/COUNTY-  MD/ST MARYS
 HV7032  COUNTRY     -  US
 HV7032  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV7032
 HV7032                         *CURRENT SURVEY CONTROL
 HV7032  ______________________________________________________________________
 HV7032* NAD 83(1993) POSITION- 38 22 34.35101(N) 076 51 08.59125(W)   ADJUSTED
 HV7032* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7032  ______________________________________________________________________
 HV7032  GEOID HEIGHT    -        -33.617 (meters)                     GEOID18
 HV7032  LAPLACE CORR    -         -1.91  (seconds)                    DEFLEC18
 HV7032  HORZ ORDER      -  THIRD
 HV7032
 HV7032.The horizontal coordinates were established by classical geodetic methods
 HV7032.and adjusted by the National Geodetic Survey in November 1994.
 HV7032
 HV7032.The orthometric height was scaled from a topographic map.
 HV7032
 HV7032.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7032.GEOID18 height accuracy estimate available here.
 HV7032
 HV7032.Click photographs - Photos may exist for this station.
 HV7032
 HV7032.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7032
 HV7032. The following values were computed from the NAD 83(1993) position.
 HV7032
 HV7032;                    North         East     Units Scale Factor Converg.
 HV7032;SPC MD       -    78,772.606   412,898.581   MT  0.99998762   +0 05 33.5
 HV7032;SPC MD       -   258,439.79  1,354,651.43   sFT  0.99998762   +0 05 33.5
 HV7032;SPC VA N     - 2,080,049.471 3,643,957.651   MT  0.99995720   +1 01 41.9
 HV7032;SPC VA N     - 6,824,295.64 11,955,217.73   sFT  0.99995720   +1 01 41.9
 HV7032;UTM  18      - 4,249,181.644   338,193.238   MT  0.99992244   -1 09 00.9
 HV7032
 HV7032!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7032!SPC MD       -   1.00000516  x   0.99998762  =   0.99999278
 HV7032!SPC VA N     -   1.00000516  x   0.99995720  =   0.99996236
 HV7032!UTM  18      -   1.00000516  x   0.99992244  =   0.99992760
 HV7032
 HV7032_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3819349181(NAD 83)
 HV7032
 HV7032                          SUPERSEDED SURVEY CONTROL
 HV7032
 HV7032  NAD 83(1991)-  38 22 34.35084(N)    076 51 08.59515(W) AD(       ) 3
 HV7032  NAD 83(1986)-  38 22 34.35096(N)    076 51 08.60695(W) AD(       ) 3
 HV7032  NAD 27      -  38 22 33.83300(N)    076 51 09.67100(W) AD(       ) 3
 HV7032  USSD        -  38 22 34.63100(N)    076 51 09.77500(W) AD(       ) 3
 HV7032
 HV7032.Superseded values are not recommended for survey control.
 HV7032
 HV7032.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7032.See file dsdata.pdf to determine how the superseded data were derived.
 HV7032
 HV7032_MARKER: H = DRILL HOLE
 HV7032_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7032_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7032+STABILITY: SURFACE MOTION
 HV7032
 HV7032  HISTORY     - Date     Condition        Report By
 HV7032  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7032  HISTORY     - 1933     MARK NOT FOUND   CGS
 HV7032
 HV7032                          STATION DESCRIPTION
 HV7032
 HV7032'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7032'ON THE NORTHEASTERN SHORE OF WICOMICO RIVER, ABOUT 3/4 MILE NNE OF
 HV7032'STODDARD POINT, ON GRASS LAND, ABOUT 2 FEET ABOVE HIGH-WATER MARK,
 HV7032'3 YARDS N OF SHORE, 20 YARDS W OF TREES WHICH EXTEND ALONG CREEK,
 HV7032'4 YARDS SW BY W OF A CORNER OF A FENCE, AND 15 YARDS SE OF ANOTHER
 HV7032'CORNER OF A FENCE.  STATION MARK IS CENTER OF STANDARD MONUMENT OF
 HV7032'MARYLAND SHELL FISH SURVEY.  THE STANDARD MONUMENTS OF THE
 HV7032'MARYLAND SHELL FISH SURVEY ARE MADE OF CONCRETE AND ARE 2 FEET
 HV7032'LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  THEIR TOPS ARE
 HV7032'ALL MARKED WITH THE SAME MOLD AND SHOW A CENTER HOLE SURROUNDED BY
 HV7032'A TRIANGLE, WITH THE COUNTERSUNK LETTERS M.S.F.C. ARRANGED AROUND
 HV7032'THE VERTEX, AND THE LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HV7032'TRIANGLE.  THE CENTER HOLE IS ALWAYS AT THE CENTER OF THE
 HV7032'MONUMENT, AND IF THE MARKING HAS BEEN BROKEN OFF WITHOUT
 HV7032'DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE
 HV7032'USED AS THE LOCATION OF THE STATION. THE MONUMENT IS SET
 HV7032'VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5 INCHES
 HV7032'ABOVE THE SURFACE. DISTANCES AND BEARINGS FROM THE STATION TO
 HV7032'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LEFT CHIMNEY OF
 HV7032'STODDARD HOUSE, 1-1/8 MILES, S 13 DEG 13 MIN W.  NEAR PEAK OF ROOF
 HV7032'BETWEEN TWO CHIMNEYS, 1-1/2 MILES, S 55 DEG 1 MIN W.  CHIMNEY ON
 HV7032'LEFT END OF SMALL HOUSE, 1-1/2 MILES, S 72 DEG 40 MIN W.  NAIL IN
 HV7032'BLAZE IN TOP FENCE RAIL, 10.62 METERS (34.8 FEET), N 34 DEG 8
 HV7032'MIN W.  NAIL IN BLAZE IN 5-INCH CEDAR TREE, 10.75 METERS (35.3
 HV7032'FEET), N 14 DEG 45 MIN W.  NAIL IN BLAZE IN TOP OF CHESTNUT FENCE
 HV7032'POST, 3.43 METERS (11.25 FEET), N 75 DEG 10 MIN E.  NAIL IN BLAZE
 HV7032'IN 5-INCH PERSIMMON TREE, 13.94 METERS (45.7 FEET), N 89 DEG 2
 HV7032'MIN E.  TANGENT OF POINT, 1/4 MILE, S 51 DEG 1 MIN E.  NEAR LARGE
 HV7032'CHIMNEY OF A BUNKHOUSE, 1-1/8 MILES, S 48 DEG 7 MIN E.
 HV7032
 HV7032                          STATION RECOVERY (1933)
 HV7032
 HV7032'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (HEC)
 HV7032'STATION LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3483 ***********************************************************************
 JU3483  CBN         -  This is a Cooperative Base Network Control Station.
 JU3483  DESIGNATION -  BARCLAY RESET
 JU3483  PID         -  JU3483
 JU3483  STATE/COUNTY-  MD/QUEEN ANNES
 JU3483  COUNTRY     -  US
 JU3483  USGS QUAD   -  SUDLERSVILLE (2017)
 JU3483
 JU3483                         *CURRENT SURVEY CONTROL
 JU3483  ______________________________________________________________________
 JU3483* NAD 83(2011) POSITION- 39 08 34.08988(N) 075 51 02.00417(W)   ADJUSTED
 JU3483* NAD 83(2011) ELLIP HT-   -12.951 (meters)        (06/27/12)   ADJUSTED
 JU3483* NAD 83(2011) EPOCH   -  2010.00
 JU3483* NAVD 88 ORTHO HEIGHT -    20.919 (meters)       68.63  (feet) ADJUSTED
 JU3483  ______________________________________________________________________
 JU3483  GEOID HEIGHT    -        -33.897 (meters)                     GEOID18
 JU3483  NAD 83(2011) X  -  1,210,849.563 (meters)                     COMP
 JU3483  NAD 83(2011) Y  - -4,803,048.201 (meters)                     COMP
 JU3483  NAD 83(2011) Z  -  4,004,616.893 (meters)                     COMP
 JU3483  LAPLACE CORR    -         -3.65  (seconds)                    DEFLEC18
 JU3483  DYNAMIC HEIGHT  -         20.908 (meters)       68.60  (feet) COMP
 JU3483  MODELED GRAVITY -    980,093.3   (mgal)                       NAVD 88
 JU3483
 JU3483  VERT ORDER      -  SECOND    CLASS II
 JU3483
 JU3483  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU3483  Standards:
 JU3483         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU3483            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU3483  -------------------------------------------------------------------
 JU3483  NETWORK    0.68   1.27           0.30   0.25   0.65     -0.06348100
 JU3483  -------------------------------------------------------------------
 JU3483  Click here for local accuracies and other accuracy information.
 JU3483
 JU3483.The horizontal coordinates were established by GPS observations
 JU3483.and adjusted by the National Geodetic Survey in June 2012.
 JU3483
 JU3483.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU3483.been affixed to the stable North American tectonic plate. See 
 JU3483.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU3483
 JU3483.The horizontal coordinates are valid at the epoch date displayed above
 JU3483.which is a decimal equivalence of Year/Month/Day.
 JU3483
 JU3483.The orthometric height was determined by differential leveling and
 JU3483.adjusted by the NATIONAL GEODETIC SURVEY
 JU3483.in August 1994.
 JU3483
 JU3483.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3483.GEOID18 height accuracy estimate available here.
 JU3483
 JU3483.Click photographs - Photos may exist for this station.
 JU3483
 JU3483.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU3483
 JU3483.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3483
 JU3483.The ellipsoidal height was determined by GPS observations
 JU3483.and is referenced to NAD 83.
 JU3483
 JU3483.The dynamic height is computed by dividing the NAVD 88
 JU3483.geopotential number by the normal gravity value computed on the
 JU3483.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU3483.degrees latitude (g = 980.6199 gals.).
 JU3483
 JU3483.The modeled gravity was interpolated from observed gravity values.
 JU3483
 JU3483. The following values were computed from the NAD 83(2011) position.
 JU3483
 JU3483;                    North         East     Units Scale Factor Converg.
 JU3483;SPC MD       -   164,484.597   499,365.144   MT  0.99996068   +0 43 17.1
 JU3483;SPC MD       -   539,646.55  1,638,333.81   sFT  0.99996068   +0 43 17.1
 JU3483;UTM  18      - 4,332,968.166   426,496.524   MT  0.99966652   -0 32 13.0
 JU3483
 JU3483!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3483!SPC MD       -   1.00000203  x   0.99996068  =   0.99996271
 JU3483!UTM  18      -   1.00000203  x   0.99966652  =   0.99966855
 JU3483
 JU3483:                Primary Azimuth Mark                     Grid Az
 JU3483:SPC MD       -  BARCLAY AZ MK 2                          272 05 21.9
 JU3483:UTM  18      -  BARCLAY AZ MK 2                          273 20 52.0
 JU3483
 JU3483_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2649632968(NAD 83)
 JU3483
 JU3483|---------------------------------------------------------------------|
 JU3483| PID    Reference Object                     Distance      Geod. Az  |
 JU3483|                                                           dddmmss.s |
 JU3483| CB1221 BARCLAY RM 3                         33.750 METERS 01052     |
 JU3483| CB1218 BARCLAY RM 1                         49.250 METERS 05102     |
 JU3483| CB1219 BARCLAY RM 1 RESET                   53.348 METERS 05119     |
 JU3483| CB1217 BARCLAY AZ MK 2                                    2724839.0 |
 JU3483| CB1216 BARCLAY AZ MK                                      2735028.7 |
 JU3483| CB1220 BARCLAY RM 2                         46.537 METERS 29324     |
 JU3483| CB1222 BARCLAY RM 4                         38.197 METERS 31819     |
 JU3483|---------------------------------------------------------------------|
 JU3483
 JU3483                          SUPERSEDED SURVEY CONTROL
 JU3483
 JU3483  NAD 83(2007)-  39 08 34.09009(N)    075 51 02.00491(W) AD(2002.00) 0
 JU3483  ELLIP H (02/10/07)  -12.922  (m)                       GP(2002.00)    
 JU3483  ELLIP H (02/12/02)  -12.899  (m)                       GP(       ) 4 1
 JU3483  NAD 83(1991)-  39 08 34.08923(N)    075 51 02.00562(W) AD(       ) B
 JU3483  ELLIP H (10/23/91)  -12.919  (m)                       GP(       ) 4 1
 JU3483  NAD 83(1986)-  39 08 34.08001(N)    075 51 02.01572(W) AD(       ) 1
 JU3483  NAD 27      -  39 08 33.68200(N)    075 51 03.24400(W) AD(       ) 1
 JU3483  USSD        -  39 08 34.05600(N)    075 51 03.07900(W) AD(       ) 3
 JU3483  NAVD 88              20.92   (m)           68.6    (f) LEVELING    3  
 JU3483  NGVD 29              21.15   (m)           69.4    (f) LEVELING    3  
 JU3483  NGVD 29 (07/19/86)   21.8    (m)           72.     (f) VERT ANG       
 JU3483
 JU3483.Superseded values are not recommended for survey control.
 JU3483
 JU3483.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3483.See file dsdata.pdf to determine how the superseded data were derived.
 JU3483
 JU3483_MARKER: DS = TRIANGULATION STATION DISK
 JU3483_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3483_STAMPING: BARCLAY 1896 1932
 JU3483_MARK LOGO: CGS
 JU3483_PROJECTION: RECESSED 52 CENTIMETERS
 JU3483_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU3483_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3483+STABILITY: SURFACE MOTION
 JU3483_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3483+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2019
 JU3483
 JU3483  HISTORY     - Date     Condition        Report By
 JU3483  HISTORY     - 1932     MONUMENTED       CGS
 JU3483  HISTORY     - 1934     GOOD             CGS
 JU3483  HISTORY     - 1961     GOOD             CGS
 JU3483  HISTORY     - 1970     GOOD             NGS
 JU3483  HISTORY     - 1971     GOOD             NGS
 JU3483  HISTORY     - 1974     GOOD             NGS
 JU3483  HISTORY     - 19900612 GOOD             NGS
 JU3483  HISTORY     - 19910219 GOOD             NGS
 JU3483  HISTORY     - 19920202 GOOD             NGS
 JU3483  HISTORY     - 19990211 GOOD             GEOMET
 JU3483  HISTORY     - 20000327 GOOD             MDSHA
 JU3483  HISTORY     - 20000517 GOOD             GEOMET
 JU3483  HISTORY     - 20050507 GOOD             USPSQD
 JU3483  HISTORY     - 20080718 MARK NOT FOUND   JMT
 JU3483  HISTORY     - 20190718 GOOD             MDSHA
 JU3483
 JU3483                          STATION DESCRIPTION
 JU3483
 JU3483'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (CDM)
 JU3483'ABOUT 1/2 MILE (E) FROM THE TOWN OF BARCLAY AND 4-1/2 MILES (W) OF THE
 JU3483'TOWN OF TEMPLEVILLE, ON S SIDE OF BARCLAY-TEMPLEVILLE ROAD AND ON
 JU3483'PROPERTY OWNED BY MRS. F.R. ANDERSON, WIDOW OF FORMER OWNER.
 JU3483'
 JU3483'STATION IS DIRECTLY S OF LANE TO FARMHOUSE AND ABOUT 50 FEET S OF
 JU3483'CENTER LINE OF MAIN ROAD.  DIRECTION REFERRED TO CHIMNEY AND TREES IN
 JU3483'ORIGINAL DESCRIPTION WERE USED TO RECOVER STATION AND FOUND TO BE
 JU3483'CORRECT.
 JU3483'
 JU3483'THE ORIGINAL SURFACE MARK WAS FOUND 6 INCHES BELOW THE SURFACE AND
 JU3483'DISTURBED BY CULTIVATION, THIS WAS REMOVED AND THE UNDERGROUND MARK
 JU3483'RECOVERED, A GRANITE BLOCK WITH CROSS ON TOP IN GOOD CONDITION.  THIS
 JU3483'MARK WAS LEFT INTACT AND A SURFACE MARK, A STANDARD BRONZE DISK SET IN
 JU3483'CONCRETE AS DESCRIBED WAS ESTABLISHED DIRECTLY OVER THE OLD MARK AND
 JU3483'ITS UPPER SURFACE LEFT 12 INCHES BELOW GROUND LEVEL TO INSURE
 JU3483'PERMANENCY AND AVOID INTERFERENCE WITH CULTIVATION.  STATION MARK WAS
 JU3483'STAMPED BARCLAY 1896-1932.
 JU3483'
 JU3483'TWO REFERENCE MARKS, STANDARD BRONZE DISKS SET IN CONCRETE, AS
 JU3483'DESCRIBED WERE ESTABLISHED AND STAMPED BARCLAY 1932.
 JU3483'
 JU3483'REFERENCE MARK NO.1 IS 161.55 FEET FROM THE STATION.
 JU3483'
 JU3483'REFERENCE MARK NO.2 IS 152.68 FEET FROM STATION.
 JU3483'
 JU3483'REACHED FROM POST OFFICE IN TEMPLEVILLE BY GOING W 3.9 MILES ON
 JU3483'BARCLAY ROAD TO CROSSROADS, OR FORK, CONTINUE STRAIGHT AHEAD 0.8 MILE
 JU3483'TO LARGE HOUSE ON RIGHT (N) SIDE OF ROAD.  FIRST HOUSE ON RIGHT AFTER
 JU3483'PASSING CROSSROADS MENTIONED ABOVE.
 JU3483
 JU3483                          STATION RECOVERY (1934)
 JU3483
 JU3483'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 JU3483'RECOVERED.  STATION IS ABOUT 3/4 MILE E FROM TOWN OF BARCLAY AND 4-1/4
 JU3483'MILES W OF TOWN OF TEMPLEVILLE.  IT IS 64 FEET S OF THE CENTER LINE OF
 JU3483'A PAVED ROAD AND IN LINE WITH THE DRIVE TO THE RESIDENCE OF MRS. F.R.
 JU3483'ANDERSON, ON WHOSE PROPERTY THE STATION STANDS.  IT IS 119 FEET E OF A
 JU3483'POWER POLE, 100 FEET SE OF A 36-INCH OAK, 83 FEET SSE OF A 24-INCH
 JU3483'OAK, 198 FEET S BY E OF THE SE CORNER OF THE ANDERSON RESIDENCE, 153
 JU3483'FEET S OF THE SW CORNER OF THE GARAGE, AND 12 INCHES UNDERGROUND.
 JU3483'
 JU3483'REFERENCE MARK NO. 1 (STAMPED BARCLAY 1932) IS 49.250 METERS NE OF
 JU3483'STATION, ON S SIDE OF A WIRE FENCE, 2 METERS E OF CORNER POST, 2-1/2
 JU3483'METERS SE OF A PEAR TREE AND 4 METERS N OF CENTER LINE OF ROAD.  IT
 JU3483'PROJECTS 4 INCHES.
 JU3483'
 JU3483'REFERENCE MARK NO.2 (STAMPED BARCLAY 1932) IS 46.537 METERS WNW OF
 JU3483'STATION, 12 METERS NNE OF A POWER POLE, 5 METERS N OF CENTER LINE OF
 JU3483'ROAD, 20 METERS W OF A 36-INCH OAK AND ON S SIDE OF WIRE FENCE.  IT
 JU3483'PROJECTS 4 INCHES.
 JU3483'
 JU3483'THE AZIMUTH MARK IS 0.4 MILE (0.45 BY ROAD) W OF STATION, 6 METERS S
 JU3483'OF CENTER LINE OF ROAD, ACROSS ROAD FROM 2-STORY HOUSE, 3 METERS SE OF
 JU3483'RANGE WITH DRIVE LEADING TO HOUSE, 4 METERS SE OF PEAR TREE, 9 METERS
 JU3483'NW OF POWER POLE, 35 METERS SE OF 0.3 MILE POST.  IT PROJECTS 2
 JU3483'INCHES.  CLEARING OF CROPS PROBABLY NECESSARY.  THIS IS A NEW MARK
 JU3483'STAMPED BARCLAY 1896 AZ. MK. 1934.
 JU3483
 JU3483                          STATION RECOVERY (1961)
 JU3483
 JU3483'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3483'THE STATION MARK, REFERENCE MARK 2 AND THE AZIMUTH MARK WERE RECOVERED
 JU3483'AS DESCRIBED AND FOUND IN GOOD CONDITION.  REFERENCE MARK 1 WAS
 JU3483'RECOVERED, BUT IT APPARENTLY HAS BEEN MOVED TO ITS PRESENT SITE IN
 JU3483'RECENT YEARS.  A LONGER MEASUREMENT OF 4.098 METERS AND A DIFFERENCE
 JU3483'OF 17 MINUTES AND 32.7 SECONDS IN ITS DIRECTION WAS NOTED ON THIS
 JU3483'DATE.  THE DISTANCE AND DIRECTION TO REFERENCE MARK 2 CHECKED WITH THE
 JU3483'PREVIOUS DATA.  THE DISTANCE AND DIRECTION TO THE AZIMUTH MARK CHECKED
 JU3483'WITH THE PREVIOUS DATA.
 JU3483'
 JU3483'REFERENCE MARK 1, A STANDARD DISK STAMPED BARCLAY NO 1 1932, IS SET IN
 JU3483'TOP OF A 10-INCH SQUARE CONCRETE MONUMENT FLUSH WITH THE SURFACE OF
 JU3483'THE GROUND.  IT IS 40.0 FEET NORTHEAST OF A POWERLINE POLE, 6.0 FEET
 JU3483'EAST OF A FENCE CORNER AND 12.0 FEET NORTH OF THE CENTERLINE OF STATE
 JU3483'HIGHWAY 302.
 JU3483'
 JU3483'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 JU3483
 JU3483                          STATION RECOVERY (1970)
 JU3483
 JU3483'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 JU3483'STATION IS LOCATED 0.75 MILE EAST OF BARCLAY, MARYLAND ALONG MARYLAND
 JU3483'HIGHWAY 302, 45.3 FEET SOUTH OF A METAL WITNESS POST, 64.0 FEET SOUTH
 JU3483'OF THE CENTERLINE OF MARYLAND HIGHWAY 302, 119.0 FEET EAST OF POWER
 JU3483'POLE NO. EOM 504, AND 90.5 FEET SOUTHWEST OF POWER POLE NO.  EOM 503.
 JU3483'A STANDARD DISK SET IN THE TOP OF A CONCRETE POST 1.5 FEET BELOW THE
 JU3483'SURFACE, STAMPED BARCLAY 1932.
 JU3483'
 JU3483'REFERENCE MARK NO. 2 IS 19.3 FEET NORTH OF THE CENTERLINE OF MARYLAND
 JU3483'HIGHWAY 302, 22.0 FEET WEST OF C AND POLE NO. 14, AND 41.4 FEET NORTH
 JU3483'OF EOM POLE NO. 504.  A STANDARD DISK SET IN THE TOP OF A CONCRETE
 JU3483'POST PROJECTING 6 INCHES STAMPED BARCLAY NO. 2, 1932.
 JU3483'
 JU3483'AZIMUTH MARK IS 0.4 MILE WEST ALONG MARYLAND HIGHWAY 302, 22.0 FEET
 JU3483'SOUTH OF THE CENTERLINE OF MARYLAND HIGHWAY 302, AND 36.4 FEET WEST OF
 JU3483'POLE NO. 516.  A STANDARD DISK SET IN THE TOP OF A CONCRETE POST
 JU3483'PROJECTING 2 INCHES STAMPED BARCLAY 1896, AZ.MK. 1934.
 JU3483'
 JU3483'NOTE-THE ABOVE MARKS WERE RECOVERED IN GOOD CONDITION.  RM 1 WAS
 JU3483'DESTROYED WHEN ROAD WAS WIDENED.
 JU3483
 JU3483                          STATION RECOVERY (1971)
 JU3483
 JU3483'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JU3483'THE STATION WAS RECOVERED AND FOUND TO BE IN GOOD CONDITION.  THE
 JU3483'AZIMUTH MARK, REFERENCE MARK NO. 1 AND REFERENCE MARK NO. 2 WERE
 JU3483'RECOVERED AND FOUND TO BE IN FAIR CONDITION.  THE AZIMUTH MARK AND
 JU3483'BOTH REFERENCE MARKS WERE IN THE WAY OF NEW HIGHWAY CONSTRUCTION.
 JU3483'THEY WERE DESTROYED AFTER NEW MARKS WERE ESTABLISHED.
 JU3483'
 JU3483'THE STATION IS LOCATED IN A CULTIVATED FIELD ON THE SOUTH SIDE OF
 JU3483'STATE HIGHWAY 302, ABOUT 4.25 MILES WEST OF TEMPLEVILLE AND 0.75 MILE
 JU3483'EAST OF BARCLAY.  IT IS 64 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY
 JU3483'AND IN LINE WITH THE WEST ONE OF TWO DRIVEWAYS GOING NORTH FROM THE
 JU3483'HIGHWAY.  THE MARK IS 18-INCHES UNDER THE SURFACE OF THE GROUND AND
 JU3483'THE DISK IS STAMPED, BARCLAY 1896 1932.  IT IS ON PROPERTY OF F.R.
 JU3483'ANDERSON WHO LIVES IN HOUSE JUST TO WEST OF THE STATION.
 JU3483'
 JU3483'REFERENCE MARK NO. 3 IS 1.0 FOOT WEST OF A FENCELINE, 10 FEET EAST OF
 JU3483'THE CENTERLINE OF THE MOST EASTERLY DRIVEWAY OF TWO, 40.0 FEET NORTH
 JU3483'OF THE CENTERLINE OF THE HIGHWAY, AND 112.0 FEET SOUTHEAST OF THE
 JU3483'SOUTHEAST CORNER OF A TWO STORY FRAME HOUSE.  IT IS SET FLUSH WITH
 JU3483'GROUND SURFACE, AND THE DISK IS STAMPED, BARCLAY 1896 1932 NO.
 JU3483'
 JU3483'REFERENCE MARK NO. 4 IS 1.0 FOOT EAST OF A FENCELINE, 20 FEET SOUTH OF
 JU3483'A UTILITY POLE, 41 FEET NORTH OF THE CENTERLINE OF HIGHWAY, 62.5 FEET
 JU3483'WEST OF THE CENTERLINE OF THE WEST ONE OF TWO DRIVEWAYS, AND 90.5 FEET
 JU3483'SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF HOUSE.  IT IS SET FLUSH
 JU3483'WITH THE GROUND, AND THE DISK IS STAMPED, BARCLAY 1896 1932 NO 4.
 JU3483'
 JU3483'THE AZIMUTH MARK IS ON THE SOUTH SIDE OF STATE HIGHWAY 302, 148 FEET
 JU3483'NORTH OF THE NORTHWEST CORNER OF MRS. PENNINGTONS HOUSE, 68 FEET WEST
 JU3483'OF THE CENTERLINE OF DRIVEWAY, 63 FEET NORTH-NORTHEAST OF UTILITY POLE
 JU3483'NO. 516A, 19 FEET NORTHWEST OF THE WEST ONE OF TWO TREES IN THE YARD,
 JU3483'40 FEET SOUTH OF THE CENTERLINE OF HIGHWAY, AND 2 FEET NORTH OF THE
 JU3483'NORTH END OF A BOARD FENCE.  IT IS FLUSH WITH THE GROUND, AND THE DISK
 JU3483'IS STAMPED BARCLAY 1896 1971.
 JU3483'
 JU3483'TO REACH FROM THE CROSSROAD AND INTERSECTION OF STATE HIGHWAYS 313 AND
 JU3483'302 IN BARCLAY.  GO EASTERLY ON ST. HIGHWAY 302 FOR 0.35 MILE TO THE
 JU3483'AZIMUTH MARK ON THE RIGHT, CONTINUE EASTERLY ON HIGHWAY FOR 0.4 MILE
 JU3483'TO THE STATION ON THE RIGHT, AND TWO DRIVEWAYS TO A HOUSE ON THE LEFT.
 JU3483'
 JU3483'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--0.75 MILE EAST OF
 JU3483'BARCLAY.
 JU3483
 JU3483                          STATION RECOVERY (1974)
 JU3483
 JU3483'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JU3483'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JU3483'AS DESCRIBED IN THE 1971 DESCRIPTION.  A POLARIS AZIMUTH WAS OBSERVED
 JU3483'AT THIS DATE TO CHECK THE AZIMUTH TO THE AZIMUTH MARK WHICH WAS SET IN
 JU3483'1971.
 JU3483'
 JU3483'A NEW WITNESS POST WAS SET NEAR POWERLINE POLE NUMBERED 504 WHICH IS
 JU3483'70 FEET WEST-NORTHWEST OF THE STATION.  THERE ARE NO OTHER CHANGES IN
 JU3483'THE 1971 DESCRIPTION.
 JU3483'
 JU3483'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3/4 MILE EAST OF
 JU3483'BARCLAY.
 JU3483
 JU3483                          STATION RECOVERY (1990)
 JU3483
 JU3483'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JU3483'THE STATION IS LOCATED IN A CULTIVATED FIELD ON THE SOUTH SIDE OF
 JU3483'STATE HIGHWAY 302, ABOUT 4.25 MILES WEST OF TEMPLEVILLE AND 0.75 MILE
 JU3483'EAST OF BARCLAY.  IT IS 64 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY
 JU3483'AND IN LINE WITH THE WEST ONE OF TWO DRIVEWAYS GOING NORTH FROM THE
 JU3483'HIGHWAY.  THE MARK IS 18-INCHES UNDER THE SURFACE OF THE GROUND AND
 JU3483'THE DISK IS STAMPED, BARCLAY 1896 1932.  IT IS ON PROPERTY OF F.R.
 JU3483'ANDERSON WHO LIVES IN HOUSE JUST TO WEST OF THE STATION.
 JU3483'
 JU3483'A NEW WITNESS POST WAS SET NEAR POWERLINE POLE NUMBERED 504 WHICH IS
 JU3483'70 FEET WEST-NORTHWEST OF THE STATION.  AIRLINE DISTANCE AND DIRECTION
 JU3483'FROM NEAREST TOWN--3/4 MILE EAST OF BARCLAY.
 JU3483
 JU3483                          STATION RECOVERY (1991)
 JU3483
 JU3483'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JU3483'RECOVERED IN GOOD CONDITION.
 JU3483
 JU3483                          STATION RECOVERY (1992)
 JU3483
 JU3483'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 JU3483'STATION MARK RECOVERED IN GOOD CONDITION.  OTHER MARKS NOT SEARCHED
 JU3483'FOR.  STATION IS LOCATED ABOUT 9 KM (5.6 MI) WEST OF THE
 JU3483'DELAWARE-MARYLAND LINE, 1 KM (0.6 MI) EAST-SOUTHEAST OF BARCLAY, ALONG
 JU3483'A STATE HIGHWAY, AND IN A CULTIVATED FIELD ADJACENT TO THE PROPERTY
 JU3483'OWNER.  OWNERSHIP--JULIUS ZAUNFUCHS, PHONE 301-438-3272.  A RELATIVE,
 JU3483'WILLIAM ELBORN (301-438-3211)  LIVES DIRECTLY ACROSS HIGHWAY FROM THE
 JU3483'STATION.
 JU3483'
 JU3483'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 302 AND 313 IN BARCLAY,
 JU3483'GO SOUTHEAST ON HIGHWAY 302 FOR 1.20 KM (0.75 MI) TO A SMALL BRICK
 JU3483'HOUSE ON THE RIGHT (OWNER)  CONTINUE AHEAD FOR 0.08 KM (0.05 MI) TO
 JU3483'THE STATION ON THE RIGHT, ACROSS HIGHWAY FROM TWO DRIVEWAYS LEADING TO
 JU3483'A HOUSE AND BARN.
 JU3483'
 JU3483'STATION MARK IS SET IN THE TOP OF A 30-CM ROUND CONCRETE POST 0.4 M
 JU3483'(1.3 FT) BELOW GROUND.  IT IS 18.6 M (61.0 FT) SOUTH OF THE HIGHWAY
 JU3483'CENTER, 5.4 M (17.7 FT) SOUTH OF A FIBERGLASS WITNESS POST, 7.0 M
 JU3483'(23.0 FT) EAST OF THE EXTENDED EAST WALL OF A TWO-STORY GRAY SHINGLE
 JU3483'HOUSE ACROSS HIGHWAY, IN LINE WITH THE WEST ONE OF TWO DRIVEWAYS
 JU3483'ACROSS THE HIGHWAY, 21.6 M (70.9 FT) EAST-SOUTHEAST OF UTILITY POLE
 JU3483'504, AND 53.9 M (176.8 FT) WEST-SOUTHWEST OF UTILITY POLE 502.
 JU3483'NOTE-DUE TO EXTENSIVE USE, THE STATION HOLE IS USUALLY LEFT OPEN.
 JU3483'DESCRIBED BY G.R.HEID.
 JU3483
 JU3483                          STATION RECOVERY (1999)
 JU3483
 JU3483'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (FJ)
 JU3483'RECOVERED AS DESCRIBED.
 JU3483
 JU3483                          STATION RECOVERY (2000)
 JU3483
 JU3483'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JU3483'RECOVERED AS DESCRIBED.
 JU3483
 JU3483                          STATION RECOVERY (2000)
 JU3483
 JU3483'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (CCG)
 JU3483'GOOD.
 JU3483
 JU3483                          STATION RECOVERY (2005)
 JU3483
 JU3483'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JU3483'REFERENCED UTILITY POLE 504 ALSO BEARS THE NUMBERS 33923 AND 21502.  A
 JU3483'METAL WITNESS POST HAS BEEN PLACED AT THE BASE OF THE POLE.  UTILITY
 JU3483'POLE 502 ALSO BEARS THE NUMBER 21506.  REFERENCED CARSONITE POST IS
 JU3483'CRACKED AND BROKEN.  REFERENCE MARK NO. 3 WAS FOUND IN POOR CONDITION,
 JU3483'LYING ON ITS SIDE, THE MONUMENT IS CRACKED AND BROKEN.  REFERENCE MARK
 JU3483'4 WAS FOUND IN GOOD CONDITION, 1 FOOT S OF POLE 33910 21512.  THE
 JU3483'AZIMUTH MARK WAS ALSO FOUND IN GOOD CONDITION.  THE REFERENCED BOARD
 JU3483'FENCE DOES NOT EXIST.
 JU3483
 JU3483                          STATION RECOVERY (2008)
 JU3483
 JU3483'RECOVERY NOTE BY JOHNSON MIRMIRAN AND THOMPSON PA 2008 (JAF)
 JU3483'MONUMENT NOT RECOVERED- MAY STILL EXIST (NEED DIGGING EQUIPMENT)
 JU3483
 JU3483                          STATION RECOVERY (2019)
 JU3483
 JU3483'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (WAC)
 JU3483'THE MARK IS LOCATED 70.9 FT (21.6 M) EAST OF DPL POLE 39912-21502 (C
 JU3483'AND P 235) AND 85.0 FT (25.9 M) SOUTHEAST OF HOUSE 1815 MAILBOX POST
 JU3483'SITUATED ON THE NORTH SIDE OF MD 302.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH6261 ***********************************************************************
 DH6261  DESIGNATION -  BARKLEY
 DH6261  PID         -  DH6261
 DH6261  STATE/COUNTY-  MD/BALTIMORE
 DH6261  COUNTRY     -  US
 DH6261  USGS QUAD   -  SPARROWS POINT (2016)
 DH6261
 DH6261                         *CURRENT SURVEY CONTROL
 DH6261  ______________________________________________________________________
 DH6261* NAD 83(1986) POSITION- 39 14 14.     (N) 076 29 35.     (W)   SCALED
 DH6261* NAVD 88 ORTHO HEIGHT -    15.051 (meters)       49.38  (feet) ADJUSTED
 DH6261  ______________________________________________________________________
 DH6261  GEOID HEIGHT    -        -33.004 (meters)                     GEOID18
 DH6261  DYNAMIC HEIGHT  -         15.043 (meters)       49.35  (feet) COMP
 DH6261  MODELED GRAVITY -    980,096.0   (mgal)                       NAVD 88
 DH6261
 DH6261  VERT ORDER      -  SECOND    CLASS I
 DH6261
 DH6261.The horizontal coordinates were scaled from a map and have
 DH6261.an estimated accuracy of +/- 6 seconds.
 DH6261
 DH6261.The orthometric height was determined by differential leveling and
 DH6261.adjusted by the NATIONAL GEODETIC SURVEY
 DH6261.in May 2006.
 DH6261
 DH6261.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH6261.GEOID18 height accuracy estimate available here.
 DH6261
 DH6261.Click photographs - Photos may exist for this station.
 DH6261
 DH6261.The dynamic height is computed by dividing the NAVD 88
 DH6261.geopotential number by the normal gravity value computed on the
 DH6261.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH6261.degrees latitude (g = 980.6199 gals.).
 DH6261
 DH6261.The modeled gravity was interpolated from observed gravity values.
 DH6261
 DH6261;                    North         East    Units  Estimated Accuracy
 DH6261;SPC MD       -   174,460.      443,770.      MT  (+/- 180 meters Scaled)
 DH6261
 DH6261_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ711441(NAD 83)
 DH6261
 DH6261                          SUPERSEDED SURVEY CONTROL
 DH6261
 DH6261.No superseded survey control is available for this station.
 DH6261
 DH6261_MARKER: DD = SURVEY DISK
 DH6261_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 DH6261_STAMPING: BARKLEY 1998
 DH6261_MARK LOGO: MDSHA
 DH6261_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH6261_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH6261_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH6261+SATELLITE: SATELLITE OBSERVATIONS - 1998
 DH6261
 DH6261  HISTORY     - Date     Condition        Report By
 DH6261  HISTORY     - 1998     MONUMENTED       MDSHA
 DH6261
 DH6261                          STATION DESCRIPTION
 DH6261
 DH6261'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998
 DH6261'THE STATION IS LOCATED ABOUT 8.0 MILES (12.9 KM) SOUTHEAST OF
 DH6261'BALTIMORE, IN THE TOWN OF DUNDALK.  TO REACH FROM THE NORTHEAST END OF
 DH6261'THE INTERSTATE HIGHWAY 695 (FRANCIS SCOTT KEY) BRIDGE OVER THE
 DH6261'PATAPSCO RIVER, PROCEED NORTHEAST ALONG INTERSTATE HIGHWAY 695 FOR 1.5
 DH6261'MILES (2.4 KM) TO THE NORTHEAST END OF THE HIGHWAY BRIDGE OVER BEAR
 DH6261'CREEK AND THE STATION ON THE RIGHT.  IT IS A STANDARD BRASS STATE
 DH6261'HIGHWAY ADMINISTRATION SURVEY DISK SET IN A DRILL HOLE IN THE CONCRETE
 DH6261'SHOULDER, 18.5 FEET (5.6 M) SOUTH OF THE CENTER LINE OF THE NORTH
 DH6261'BOUND LANES (OUTER LOOP) OF INTERSTATE 695, 1.6 FEET (0.5 M) NORTH OF
 DH6261'THE FACE OF THE SOUTH PARAPET WALL, 1.8 FEET (0.5 M) EAST OF THE
 DH6261'CENTER OF THE BRIDGE BACK WALL, 10.7 FEET (3.3 M) WEST OF THE EAST END
 DH6261'OF THE BRIDGE PARAPET WALL AND LEVEL WITH THE ROAD SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7188 ***********************************************************************
 JV7188  DESIGNATION -  BARN
 JV7188  PID         -  JV7188
 JV7188  STATE/COUNTY-  MD/MONTGOMERY
 JV7188  COUNTRY     -  US
 JV7188  USGS QUAD   -  POOLESVILLE (2016)
 JV7188
 JV7188                         *CURRENT SURVEY CONTROL
 JV7188  ______________________________________________________________________
 JV7188* NAD 83(2011) POSITION- 39 13 23.54890(N) 077 22 48.99820(W)   ADJUSTED
 JV7188* NAD 83(2011) ELLIP HT-   115.854 (meters)        (06/27/12)   ADJUSTED
 JV7188* NAD 83(2011) EPOCH   -  2010.00
 JV7188* NAVD 88 ORTHO HEIGHT -   148.0   (meters)      486.    (feet) GPS OBS
 JV7188  ______________________________________________________________________
 JV7188  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7188  GEOID HEIGHT    -        -32.510 (meters)                     GEOID93
 JV7188  GEOID HEIGHT    -        -32.158 (meters)                     GEOID18
 JV7188  NAD 83(2011) X  -  1,080,987.944 (meters)                     COMP
 JV7188  NAD 83(2011) Y  - -4,828,254.540 (meters)                     COMP
 JV7188  NAD 83(2011) Z  -  4,011,617.551 (meters)                     COMP
 JV7188  LAPLACE CORR    -          6.16  (seconds)                    DEFLEC18
 JV7188
 JV7188  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7188  Standards:
 JV7188         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7188            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7188  -------------------------------------------------------------------
 JV7188  NETWORK    1.71   1.90           0.75   0.64   0.97      0.06542137
 JV7188  -------------------------------------------------------------------
 JV7188  Click here for local accuracies and other accuracy information.
 JV7188
 JV7188.The horizontal coordinates were established by GPS observations
 JV7188.and adjusted by the National Geodetic Survey in June 2012.
 JV7188
 JV7188.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7188.been affixed to the stable North American tectonic plate. See 
 JV7188.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7188
 JV7188.The horizontal coordinates are valid at the epoch date displayed above
 JV7188.which is a decimal equivalence of Year/Month/Day.
 JV7188
 JV7188.The orthometric height was determined by GPS observations and a
 JV7188.high-resolution geoid model.
 JV7188
 JV7188.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7188.GEOID18 height accuracy estimate available here.
 JV7188
 JV7188.Click photographs - Photos may exist for this station.
 JV7188
 JV7188.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7188
 JV7188.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7188
 JV7188.The ellipsoidal height was determined by GPS observations
 JV7188.and is referenced to NAD 83.
 JV7188
 JV7188. The following values were computed from the NAD 83(2011) position.
 JV7188
 JV7188;                    North         East     Units Scale Factor Converg.
 JV7188;SPC MD       -   172,853.607   367,162.838   MT  0.99996819   -0 14 19.2
 JV7188;SPC MD       -   567,103.88  1,204,600.08   sFT  0.99996819   -0 14 19.2
 JV7188;UTM  18      - 4,344,246.456   294,524.802   MT  1.00011988   -1 30 20.4
 JV7188
 JV7188!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7188!SPC MD       -   0.99998182  x   0.99996819  =   0.99995001
 JV7188!UTM  18      -   0.99998182  x   1.00011988  =   1.00010170
 JV7188
 JV7188_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9452444246(NAD 83)
 JV7188
 JV7188                          SUPERSEDED SURVEY CONTROL
 JV7188
 JV7188  NAD 83(2007)-  39 13 23.54913(N)    077 22 48.99887(W) AD(2002.00) 0
 JV7188  ELLIP H (02/10/07)  115.878  (m)                       GP(2002.00)    
 JV7188  ELLIP H (08/30/02)  115.883  (m)                       GP(       ) 4 2
 JV7188  NAD 83(1991)-  39 13 23.54926(N)    077 22 48.99789(W) AD(       ) 1
 JV7188  ELLIP H (02/09/94)  115.816  (m)                       GP(       ) 4 1
 JV7188
 JV7188.Superseded values are not recommended for survey control.
 JV7188
 JV7188.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7188.See file dsdata.pdf to determine how the superseded data were derived.
 JV7188
 JV7188_STAMPING: BARN 1993
 JV7188_MARK LOGO: MD-021
 JV7188_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7188+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7188
 JV7188  HISTORY     - Date     Condition        Report By
 JV7188  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7188  HISTORY     - 20190616 MARK NOT FOUND   NGS
 JV7188
 JV7188                          STATION DESCRIPTION
 JV7188
 JV7188'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7188'FROM THE INTERSECTION OF MD RTE 109 SOUTH AND BARNESVILLE ROAD IN THE
 JV7188'TOWN OF BARNESVILLE, MD, GO WEST ON BARNESVILLE ROAD 0.15 MILES
 JV7188'(0.24 KM) TO WEST HARRIS ROAD. TURN RIGHT ON WEST HARRIS ROAD AND GO
 JV7188'NORTH 0.15 MILE (0.24 KM) TO STATION ON LEFT. STATION IS 15 FEET
 JV7188'(4.6 M) WEST OF CENTERLINE OF WEST HARRIS ROAD AND 33 FEET (10.1 M)
 JV7188'NORTH OF A PRIVATE DRIVE. STATION IS BRASS DISK SET IN 8 INCH CONCRETE
 JV7188'MONUMENT SET FLUSH WITH THE GROUND.
 JV7188
 JV7188                          STATION RECOVERY (2019)
 JV7188
 JV7188'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV7188'REFERENCE MEASUREMENTS PUT THE MARK WHERE A TREE WAS PLANTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5160 ***********************************************************************
 JV5160  DESIGNATION -  BARN CUPOLA
 JV5160  PID         -  JV5160
 JV5160  STATE/COUNTY-  MD/QUEEN ANNES
 JV5160  COUNTRY     -  US
 JV5160  USGS QUAD   -  LOVE POINT (2017)
 JV5160
 JV5160                         *CURRENT SURVEY CONTROL
 JV5160  ______________________________________________________________________
 JV5160* NAD 83(1991) POSITION- 39 01 17.29511(N) 076 19 06.71293(W)   ADJUSTED
 JV5160  ______________________________________________________________________
 JV5160  GEOID HEIGHT    -        -33.498 (meters)                     GEOID18
 JV5160  LAPLACE CORR    -         -2.05  (seconds)                    DEFLEC18
 JV5160  HORZ ORDER      -  THIRD
 JV5160
 JV5160.The horizontal coordinates were established by classical geodetic methods
 JV5160.and adjusted by the National Geodetic Survey in January 1992.
 JV5160
 JV5160.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5160.GEOID18 height accuracy estimate available here.
 JV5160
 JV5160.Click photographs - Photos may exist for this station.
 JV5160
 JV5160.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5160
 JV5160. The following values were computed from the NAD 83(1991) position.
 JV5160
 JV5160;                    North         East     Units Scale Factor Converg.
 JV5160;SPC MD       -   150,609.961   459,012.014   MT  0.99995307   +0 25 39.8
 JV5160;SPC MD       -   494,126.18  1,505,941.92   sFT  0.99995307   +0 25 39.8
 JV5160;UTM  18      - 4,319,986.216   385,858.460   MT  0.99976042   -0 49 48.9
 JV5160
 JV5160_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8585819986(NAD 83)
 JV5160
 JV5160                          SUPERSEDED SURVEY CONTROL
 JV5160
 JV5160  NAD 83(1986)-  39 01 17.29018(N)    076 19 06.72515(W) AD(       ) 3
 JV5160  NAD 27      -  39 01 16.88300(N)    076 19 07.85900(W) AD(       ) 3
 JV5160
 JV5160.Superseded values are not recommended for survey control.
 JV5160
 JV5160.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5160.See file dsdata.pdf to determine how the superseded data were derived.
 JV5160
 JV5160_MARKER: 86 = CUPOLA
 JV5160
 JV5160  HISTORY     - Date     Condition        Report By
 JV5160  HISTORY     - 1932     FIRST OBSERVED   CGS
 JV5160
 JV5160                          STATION DESCRIPTION
 JV5160
 JV5160'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 JV5160'STATION IS ON THE W SIDE OF KENT ISLAND ABOUT 1 MILE S OF LOVE
 JV5160'POINT, AND ABOUT 250 METERS E OF THE SHORELINE OF CHESAPEAKE BAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6650 ***********************************************************************
 HV6650  DESIGNATION -  BARNES 1898
 HV6650  PID         -  HV6650
 HV6650  STATE/COUNTY-  MD/DORCHESTER
 HV6650  COUNTRY     -  US
 HV6650  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV6650
 HV6650                         *CURRENT SURVEY CONTROL
 HV6650  ______________________________________________________________________
 HV6650* NAD 83(1991) POSITION- 38 27 01.48148(N) 076 18 51.43827(W)   ADJUSTED
 HV6650* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6650  ______________________________________________________________________
 HV6650  GEOID HEIGHT    -        -34.593 (meters)                     GEOID18
 HV6650  LAPLACE CORR    -         -5.13  (seconds)                    DEFLEC18
 HV6650  HORZ ORDER      -  THIRD
 HV6650
 HV6650.The horizontal coordinates were established by classical geodetic methods
 HV6650.and adjusted by the National Geodetic Survey in January 1992.
 HV6650
 HV6650.The orthometric height was scaled from a topographic map.
 HV6650
 HV6650.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6650.GEOID18 height accuracy estimate available here.
 HV6650
 HV6650.Click photographs - Photos may exist for this station.
 HV6650
 HV6650.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6650
 HV6650. The following values were computed from the NAD 83(1991) position.
 HV6650
 HV6650;                    North         East     Units Scale Factor Converg.
 HV6650;SPC MD       -    87,223.677   459,855.582   MT  0.99997724   +0 25 49.4
 HV6650;SPC MD       -   286,166.35  1,508,709.52   sFT  0.99997724   +0 25 49.4
 HV6650;UTM  18      - 4,256,609.048   385,316.012   MT  0.99976197   -0 49 02.5
 HV6650
 HV6650!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6650!SPC MD       -   1.00000547  x   0.99997724  =   0.99998271
 HV6650!UTM  18      -   1.00000547  x   0.99976197  =   0.99976743
 HV6650
 HV6650:                Primary Azimuth Mark                     Grid Az
 HV6650:SPC MD       -  WILSON 3 1898                            263 44 04.9
 HV6650:UTM  18      -  WILSON 3 1898                            264 58 56.8
 HV6650
 HV6650_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8531656609(NAD 83)
 HV6650
 HV6650|---------------------------------------------------------------------|
 HV6650| PID    Reference Object                     Distance      Geod. Az  |
 HV6650|                                                           dddmmss.s |
 HV6650| HV6750 WILSON 3 1898                       APPROX.11.8 KM 2640954.3 |
 HV6650|---------------------------------------------------------------------|
 HV6650
 HV6650                          SUPERSEDED SURVEY CONTROL
 HV6650
 HV6650  NAD 83(1986)-  38 27 01.48031(N)    076 18 51.45399(W) AD(       ) 3
 HV6650  NAD 27      -  38 27 01.03900(N)    076 18 52.62800(W) AD(       ) 3
 HV6650  USSD        -  38 27 01.42400(N)    076 18 52.39300(W) AD(       ) 3
 HV6650
 HV6650.Superseded values are not recommended for survey control.
 HV6650
 HV6650.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6650.See file dsdata.pdf to determine how the superseded data were derived.
 HV6650
 HV6650_MARKER: Z = SEE DESCRIPTION
 HV6650_SETTING: 0 = UNSPECIFIED SETTING
 HV6650_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6650
 HV6650  HISTORY     - Date     Condition        Report By
 HV6650  HISTORY     - 1898     MONUMENTED       CGS
 HV6650  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6650
 HV6650                          STATION DESCRIPTION
 HV6650
 HV6650'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 HV6650'ON THE W SHORE OF TAYLORS ISLAND, ON MEADOW LAND BELONGING TO A
 HV6650'MR. BARNES, 6 PACES N OF A FENCE LEADING FROM HOUSE LOT TO SHORE
 HV6650'AND 12 PACES E OF A BANK 2 FEET HIGH.  STATION IS MARKED BY TWO
 HV6650'4-INCH DRAIN TILES SET ONE ABOVE THE OTHER, THE TOP OF THE UPPER
 HV6650'ONE BEING ABOUT 8 INCHES BELOW THE SURFACE OF THE GROUND.  ABOVE
 HV6650'THE TILES, FLUSH WITH THE SURFACE, IS A NAIL IN A 4-INCH STUB.
 HV6650
 HV6650                          STATION RECOVERY (1960)
 HV6650
 HV6650'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6650'STATION NOT RECOVERED.  IT NOW PLOTS IN THE WATER AND IS PRESUMED
 HV6650'TO HAVE BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6718 ***********************************************************************
 HV6718  DESIGNATION -  BARREDA
 HV6718  PID         -  HV6718
 HV6718  STATE/COUNTY-  MD/CALVERT
 HV6718  COUNTRY     -  US
 HV6718  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6718
 HV6718                         *CURRENT SURVEY CONTROL
 HV6718  ______________________________________________________________________
 HV6718* NAD 83(1991) POSITION- 38 19 19.43750(N) 076 25 24.46394(W)   ADJUSTED
 HV6718* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV6718  ______________________________________________________________________
 HV6718  GEOID HEIGHT    -        -34.485 (meters)                     GEOID18
 HV6718  LAPLACE CORR    -         -5.23  (seconds)                    DEFLEC18
 HV6718  HORZ ORDER      -  FIRST
 HV6718
 HV6718.The horizontal coordinates were established by classical geodetic methods
 HV6718.and adjusted by the National Geodetic Survey in January 1992.
 HV6718
 HV6718.The orthometric height was scaled from a topographic map.
 HV6718
 HV6718.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6718.GEOID18 height accuracy estimate available here.
 HV6718
 HV6718.Click photographs - Photos may exist for this station.
 HV6718
 HV6718.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6718
 HV6718. The following values were computed from the NAD 83(1991) position.
 HV6718
 HV6718;                    North         East     Units Scale Factor Converg.
 HV6718;SPC MD       -    72,911.428   450,415.944   MT  0.99999623   +0 21 42.7
 HV6718;SPC MD       -   239,210.24  1,477,739.64   sFT  0.99999623   +0 21 42.7
 HV6718;UTM  18      - 4,242,508.451   375,569.381   MT  0.99979068   -0 52 58.0
 HV6718
 HV6718!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6718!SPC MD       -   1.00000451  x   0.99999623  =   1.00000074
 HV6718!UTM  18      -   1.00000451  x   0.99979068  =   0.99979519
 HV6718
 HV6718:                Primary Azimuth Mark                     Grid Az
 HV6718:SPC MD       -  USN AIR STA TALL ELEV TK                 202 15 53.9
 HV6718:UTM  18      -  USN AIR STA TALL ELEV TK                 203 30 34.6
 HV6718
 HV6718_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7556942508(NAD 83)
 HV6718
 HV6718|---------------------------------------------------------------------|
 HV6718| PID    Reference Object                     Distance      Geod. Az  |
 HV6718|                                                           dddmmss.s |
 HV6718| CX2059 BARREDA RM 1                         27.673 METERS 10046     |
 HV6718| HV6710 DRUM PT LIGHTHOUSE                  377.729 METERS 14305     |
 HV6718| HV6667 USN AIR STA TALL ELEV TK            APPROX. 6.1 KM 2023736.6 |
 HV6718| CX2061 BARREDA RM 3                         15.331 METERS 26451     |
 HV6718| HV6712 BARREDA 2                           122.215 METERS 32305     |
 HV6718| CX2060 BARREDA RM 2                         37.978 METERS 33625     |
 HV6718|---------------------------------------------------------------------|
 HV6718
 HV6718                          SUPERSEDED SURVEY CONTROL
 HV6718
 HV6718  NAD 83(1986)-  38 19 19.43699(N)    076 25 24.47960(W) AD(       ) 1
 HV6718  NAD 27      -  38 19 18.99600(N)    076 25 25.65300(W) AD(       ) 1
 HV6718
 HV6718.Superseded values are not recommended for survey control.
 HV6718
 HV6718.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6718.See file dsdata.pdf to determine how the superseded data were derived.
 HV6718
 HV6718_MARKER: DS = TRIANGULATION STATION DISK
 HV6718_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6718_STAMPING: BARREDA 1934
 HV6718_MARK LOGO: CGS
 HV6718_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6718+STABILITY: SURFACE MOTION
 HV6718
 HV6718  HISTORY     - Date     Condition        Report By
 HV6718  HISTORY     - 1934     MONUMENTED       CGS
 HV6718  HISTORY     - 1941     GOOD             CGS
 HV6718  HISTORY     - 1942     GOOD             CGS
 HV6718  HISTORY     - 1952     MARK NOT FOUND   CGS
 HV6718
 HV6718                          STATION DESCRIPTION
 HV6718
 HV6718'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6718'STATION IS ON THE PROPERTY OWNED BY MR. FELIPE BARREDA AND OCCUPIED
 HV6718'BY TENANT, MR. GEORGE T. STINNETT.  IT IS ON HIGH GROUND OF CLEARED
 HV6718'FIELD AT EASTERN END OF THE FARM.  MARK IS ON THE E EDGE OF THE
 HV6718'FIELD AND IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV6718'
 HV6718'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD DISKS SET
 HV6718'IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HV6718'
 HV6718'REFERENCE MARK NO.1 IS ON THE E SIDE OF THE CLEARED FIELD AND 6
 HV6718'FEET W OF A THREE-PRONG LOCUST TREE.  MARK PROJECTS 4 INCHES ABOVE
 HV6718'THE SURFACE OF THE GROUND.
 HV6718'
 HV6718'REFERENCE MARK NO.2 IS 1 FOOT E OF A WOVEN WIRE FENCE.  MARK
 HV6718'PROJECTS 4 INCHES ABOVE THE SURFACE OF THE GROUND.
 HV6718'
 HV6718'STATION STONE IS VISIBLE FROM THE GROUND AND CAN BE USED AS AN
 HV6718'AZIMUTH MARK FOR THIS STATION.
 HV6718'
 HV6718'TO REACH THE STATION GO S ON ROUTE 2 FOR 15.2 MILES FROM PRINCE
 HV6718'FREDERICK TO A ROAD JUNCTION CALLED BERTHA.  A WHITE CHURCH WITH
 HV6718'STEEPLE IS N OF THE JUNCTION AND A SIGN READS BERTHA COVE PT. 2
 HV6718'1/2 - 14 PRINCE FREDERICK - 53 ANNAPOLIS - 55 WASHINGTON.  TURN
 HV6718'LEFT HERE AND FOLLOW THE HARD SURFACE ROAD 1.1 MILES AND TURN
 HV6718'RIGHT INTO DIRT ROAD FOLLOWING IT TO THE OLD BARREDA FARMHOUSE A
 HV6718'DISTANCE OF 5.2 MILES.  CONTINUE STRAIGHT AHEAD THROUGH GATE
 HV6718'INTO FARM LANE FOR 0.1 MILE TURN LEFT FOLLOWING LANE ALONG TOP
 HV6718'OF BLUFF BETWEEN FENCE LINES FOR 0.2 MILE.  STATION IS IN OPEN
 HV6718'FIELD ON HIGH GROUND ABOUT 600 FEET E OF THIS POINT.
 HV6718'
 HV6718'A 77-FOOT TOWER WILL CLEAR ALL LINES AT THIS STATION.
 HV6718
 HV6718                          STATION RECOVERY (1941)
 HV6718
 HV6718'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (HAK)
 HV6718'STATION WAS RECOVERED AS DESCRIBED.  IT WAS REACHED BY LANDING ON
 HV6718'THE SHORE AND WALKING TO THE STATION.  ALL REFERENCE MARKS WERE
 HV6718'RECOVERED.
 HV6718
 HV6718                          STATION RECOVERY (1942)
 HV6718
 HV6718'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6718'STATION WAS RECOVERED AS DESCRIBED AND ALL THE MARKS WERE RECOVERED
 HV6718'IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION IS CORRECT AND ADEQUATE
 HV6718'EXCEPT THAT REFERENCE MARK NO.2 IS IN THE MIDDLE OF THE CULTIVATED
 HV6718'FIELD AND A NEW REFERENCE MARK WAS SET.  A NEW DESCRIPTION
 HV6718'FOLLOWS--
 HV6718'
 HV6718'STATION IS ABOUT 5 MILES SE OF LUSBY ON PROPERTY OWNED JOINTLY
 HV6718'BY BEN PARRAN AND JOHN B. GRAY OF PRINCE FREDERICK.  IT IS ON A
 HV6718'KNOLL COVERED WITH TREES, ABOUT 0.5 MILE N OF DRUM POINT
 HV6718'LIGHTHOUSE, STAMPED BARREDA 1934, AND SET 2 INCHES BELOW THE
 HV6718'SURFACE.
 HV6718'
 HV6718'REFERENCE MARK NO.1 IS E OF THE STATION, ON THE E SIDE OF A
 HV6718'CULTIVATED FIELD, 6 FEET W OF A THREE-PRONG LOCUST TREE.  IT IS
 HV6718'STAMPED BARREDA 1934 NO.1 AND PROJECTS 4 INCHES.
 HV6718'
 HV6718'REFERENCE MARK NO.2 IS N OF THE STATION IN THE MIDDLE OF A
 HV6718'CULTIVATED FIELD, 75 FEET NE OF A FENCE LINE.  IT IS STAMPED
 HV6718'BARREDA 1934 NO.2 AND IS 3 INCHES BELOW THE SURFACE OF THE GROUND.
 HV6718'
 HV6718'REFERENCE MARK NO.3 IS WSW OF THE STATION ON THE W SLOPE OF THE
 HV6718'KNOLL, 50 FEET SE OF A FENCE LINE.  IT IS A STANDARD DISK SET IN
 HV6718'CONCRETE, AS DESCRIBED IN NOTE 11A AND IS STAMPED BARREDA NO.3
 HV6718'1942 AND PROJECTS 8 INCHES.
 HV6718'
 HV6718'DRUM POINT LIGHTHOUSE WAS USED AS AN AZIMUTH MARK.  IT IS 0.5
 HV6718'MILE S OF THE STATION.  THE FINIAL WAS THE POINT OBSERVED UPON.
 HV6718'
 HV6718'TO REACH THE STATION FROM LUSBY GO SOUTHWARD ON STATE HIGHWAY 2
 HV6718'FOR 3.6 MILES TO A T-ROAD LEFT, TURN LEFT AND GO 1.2 MILES TO A
 HV6718'T-ROAD LEFT.  TURN LEFT AND GO 1.8 MILES TO A T-ROAD LEFT.  TURN
 HV6718'LEFT AND GO 0.75 MILE TO A WOODEN GATE, PASS THROUGH GATE AND
 HV6718'CONTINUE 0.25 MILE, FOLLOWING FARM ROAD TO ANOTHER GATE, PASS
 HV6718'THROUGH GATE, FOLLOW DIM TRAIL ALONG S SIDE OF FENCE TO TOP OF
 HV6718'KNOLL 0.1 MILE AND STATION.
 HV6718'
 HV6718'A 77-FOOT TOWER AT STATION BARREDA WILL SEE A 113-FOOT LIGHT AT
 HV6718'STATION CHASE AND CALVERT.
 HV6718'
 HV6718'A 77-FOOT TOWER AT STATION BARREDA WILL SEE AN 87-FOOT LIGHT AT
 HV6718'STATION CEDAR POINT 2.
 HV6718
 HV6718                          STATION RECOVERY (1952)
 HV6718
 HV6718'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (IWS)
 HV6718'THE STATION SITE WAS REACHED APPROXIMATELY AS DESCRIBED.  DUE TO
 HV6718'CONSTRUCTION, THE STATION MARK AND R.M. 3 HAD BEEN DESTROYED.  THE
 HV6718'DISKS WERE NOT FOUND.  R.M.S 1 AND 2 WERE RECOVERED.  R.M. 1 HAD
 HV6718'BEEN KNOCKED LOOSE DUE TO GRADING OPERATIONS.  R.M. 2 WAS FIRMLY
 HV6718'IN PLACE.  R.M. 2, TOGETHER WITH THE DRUM POINT LIGHTHOUSE, WAS
 HV6718'USED AS THE CONTROL POINT TO DETERMINE THE POSITION OF BARREDA
 HV6718'2.
 HV6718'
 HV6718'REFERENCE MARK DISKS 1 AND 2 WERE REMOVED AND RETURNED TO THE
 HV6718'WASHINGTON OFFICE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6712 ***********************************************************************
 HV6712  DESIGNATION -  BARREDA 2
 HV6712  PID         -  HV6712
 HV6712  STATE/COUNTY-  MD/CALVERT
 HV6712  COUNTRY     -  US
 HV6712  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6712
 HV6712                         *CURRENT SURVEY CONTROL
 HV6712  ______________________________________________________________________
 HV6712* NAD 83(1991) POSITION- 38 19 22.60630(N) 076 25 27.48634(W)   NO CHECK
 HV6712* NAVD 88 ORTHO HEIGHT -    15.    (meters)       49.    (feet) SCALED
 HV6712  ______________________________________________________________________
 HV6712  GEOID HEIGHT    -        -34.481 (meters)                     GEOID18
 HV6712  LAPLACE CORR    -         -5.22  (seconds)                    DEFLEC18
 HV6712  HORZ ORDER      -  SECOND
 HV6712
 HV6712.The horizontal coordinates were established by classical geodetic methods
 HV6712.and adjusted by the National Geodetic Survey in January 1992.
 HV6712
 HV6712.No horizontal observational check was made to the station.
 HV6712
 HV6712.The orthometric height was scaled from a topographic map.
 HV6712
 HV6712.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6712.GEOID18 height accuracy estimate available here.
 HV6712
 HV6712.Click photographs - Photos may exist for this station.
 HV6712
 HV6712.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6712
 HV6712. The following values were computed from the NAD 83(1991) position.
 HV6712
 HV6712;                    North         East     Units Scale Factor Converg.
 HV6712;SPC MD       -    73,008.670   450,341.913   MT  0.99999609   +0 21 40.8
 HV6712;SPC MD       -   239,529.28  1,477,496.76   sFT  0.99999609   +0 21 40.8
 HV6712;UTM  18      - 4,242,607.257   375,497.495   MT  0.99979090   -0 52 59.9
 HV6712
 HV6712!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6712!SPC MD       -   1.00000310  x   0.99999609  =   0.99999919
 HV6712!UTM  18      -   1.00000310  x   0.99979090  =   0.99979399
 HV6712
 HV6712:                Primary Azimuth Mark                     Grid Az
 HV6712:SPC MD       -  DRUM                                     144 21 37.3
 HV6712:UTM  18      -  DRUM                                     145 36 18.0
 HV6712
 HV6712_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7549742607(NAD 83)
 HV6712
 HV6712|---------------------------------------------------------------------|
 HV6712| PID    Reference Object                     Distance      Geod. Az  |
 HV6712|                                                           dddmmss.s |
 HV6712| CX2062 BARREDA 2 RM 1                       24.207 METERS 06641     |
 HV6712| HV6710 DRUM PT LIGHTHOUSE                  499.944 METERS 1430457.7 |
 HV6712| HV6733 DRUM                                489.732 METERS 1444318.1 |
 HV6712| HV6680 USN AIR STA CONT TWR NAB            APPROX. 3.7 KM 1780543.1 |
 HV6712| CX2064 BARREDA 3 RM 4                       13.097 METERS 19046     |
 HV6712| HV6667 USN AIR STA TALL ELEV TK            APPROX. 6.2 KM 2013855.4 |
 HV6712| HV6734 BARREDA 3                            15.067 METERS 22501     |
 HV6712| CX2063 BARREDA 2 RM 2                       85.658 METERS 33558     |
 HV6712|---------------------------------------------------------------------|
 HV6712
 HV6712                          SUPERSEDED SURVEY CONTROL
 HV6712
 HV6712  NAD 83(1986)-  38 19 22.61111(N)    076 25 27.50695(W) AD(       ) 2
 HV6712  NAD 27      -  38 19 22.16300(N)    076 25 28.67600(W) AD(       ) 2
 HV6712
 HV6712.Superseded values are not recommended for survey control.
 HV6712
 HV6712.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6712.See file dsdata.pdf to determine how the superseded data were derived.
 HV6712
 HV6712_MARKER: DS = TRIANGULATION STATION DISK
 HV6712_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6712_STAMPING: BARREDA 2 1952
 HV6712_MARK LOGO: CGS
 HV6712_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6712+STABILITY: SURFACE MOTION
 HV6712
 HV6712  HISTORY     - Date     Condition        Report By
 HV6712  HISTORY     - 1952     MONUMENTED       CGS
 HV6712  HISTORY     - 1975     SEE DESCRIPTION  NGS
 HV6712
 HV6712                          STATION DESCRIPTION
 HV6712
 HV6712'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (IWS)
 HV6712'THE STATION IS LOCATED AT DRUM POINT BEACH WHICH IS ABOUT 5 MILES
 HV6712'SOUTHEAST OF LUSBY.  IT IS 0.3 MILE NORTHWEST OF DRUM POINT
 HV6712'LIGHTHOUSE, 0.2 MILE EAST OF THE OLD BARREDA FARMHOUSE, NEAR THE
 HV6712'TOP OF A BLUFF, AND APPROXIMATELY HALFWAY BETWEEN THE PATUXENT
 HV6712'RIVER AND A SMALL INLET.  THE MARK IS SET IN THE TOP OF A
 HV6712'CONCRETE POST WHICH PROJECTS 3 INCHES ABOVE THE SURFACE OF THE
 HV6712'GROUND.  IT IS STAMPED BARREDA 2 1952.  IT SHOULD BE NOTED THAT
 HV6712'BUILDING CONSTRUCTION IS UNDERWAY IN THIS IMMEDIATE AREA.
 HV6712'
 HV6712'REFERENCE MARK NO. 1 IS ABOUT 120 FEET WEST OF THE EDGE OF A
 HV6712'SMALL INLET.  IT IS SET IN THE TOP OF A CONCRETE POST WHICH
 HV6712'PROJECTS ABOUT 4 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS
 HV6712'STAMPED BARREDA NO 1 1952.
 HV6712'
 HV6712'REFERENCE MARK NO. 2 IS ABOUT 130 FEET WEST OF THE EDGE OF A
 HV6712'SMALL INLET.  IT IS SET IN THE TOP OF A CONCRETE POST WHICH
 HV6712'PROJECTS 3 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS STAMPED
 HV6712'BARREDA NO 2 1952.
 HV6712'
 HV6712'THE AZIMUTH MARK IS THE FINIAL ON THE DRUM POINT LIGHTHOUSE.
 HV6712'
 HV6712'TO REACH THE STATION FROM LUSBY, GO SOUTHWARD ON STATE HIGHWAY
 HV6712'NO. 2 FOR 3.6 MILES TO A T-ROAD LEFT.  TURN LEFT AND GO 1.2 MILES
 HV6712'TO A T-ROAD LEFT.  TURN LEFT AND GO 1.8 MILES TO A T-ROAD
 HV6712'LEFT.  TURN LEFT AND GO ABOUT 1 MILE TO THE OLD BARREDA
 HV6712'FARMHOUSE.  BEAR LEFT AT FARMHOUSE FOR 0.1 MILE TO THE STATION
 HV6712'SITE.
 HV6712
 HV6712                          STATION RECOVERY (1975)
 HV6712
 HV6712'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (RGP)
 HV6712'ALL OLD REFERENCE MARKS DESTROYED.
 HV6712'
 HV6712'THE STATION SURFACE MARK WAS RECOVERED IN FAIR CONDITION.  THE
 HV6712'SURFACE DISK MONUMENT WAS REMOVED AND THE SUB-SURFACE DISK WAS
 HV6712'FOUND IN GOOD CONDITION.  IT WAS FOUND THAT BOTH DISKS WERE IN
 HV6712'THE SAME HORIZONTAL POSITION.  REFERENCE MARKS ONE, TWO, AND
 HV6712'THREE WERE FOUND DESTROYED.  DRUM POINT LIGHTHOUSE, WHICH WAS
 HV6712'THE AZIMUTH MARK, WAS ALSO DESTROYED SOMETIME IN THE PAST.  A
 HV6712'U.S. NAVY MARKER WAS FOUND IN THE AREA OF THE OLD LIGHTHOUSE
 HV6712'AND IT WAS INTERSECTED AT THIS DATE ALONG WITH SEVERAL OTHER
 HV6712'INTERSECTION STATIONS.  THE U.S. NAVAL AIR STATION TALL
 HV6712'ELEVATED WATER TANK 1943, IS NOT OBSTRUCTED BY A POWERLINE
 HV6712'POLE.
 HV6712'
 HV6712'A NEW HOUSE IS NOW BEING CONSTRUCTED AT THIS STATION AND IT WILL
 HV6712'DESTROY THIS STATION.  A NEW STATION BARREDA 3 WAS ESTABLISHED
 HV6712'AT THIS DATE.  SEE DESCRIPTION THEREOF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6734 ***********************************************************************
 HV6734  DESIGNATION -  BARREDA 3
 HV6734  PID         -  HV6734
 HV6734  STATE/COUNTY-  MD/CALVERT
 HV6734  COUNTRY     -  US
 HV6734  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6734
 HV6734                         *CURRENT SURVEY CONTROL
 HV6734  ______________________________________________________________________
 HV6734* NAD 83(1991) POSITION- 38 19 22.26083(N) 076 25 27.92503(W)   ADJUSTED
 HV6734* NAVD 88 ORTHO HEIGHT -    10.    (meters)       33.    (feet) VERTCON3
 HV6734  ______________________________________________________________________
 HV6734  GEOID HEIGHT    -        -34.481 (meters)                     GEOID18
 HV6734  LAPLACE CORR    -         -5.22  (seconds)                    DEFLEC18
 HV6734  HORZ ORDER      -  SECOND
 HV6734
 HV6734.The horizontal coordinates were established by classical geodetic methods
 HV6734.and adjusted by the National Geodetic Survey in January 1992.
 HV6734
 HV6734.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV6734.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV6734
 HV6734.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6734.GEOID18 height accuracy estimate available here.
 HV6734
 HV6734.Click photographs - Photos may exist for this station.
 HV6734
 HV6734.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6734
 HV6734. The following values were computed from the NAD 83(1991) position.
 HV6734
 HV6734;                    North         East     Units Scale Factor Converg.
 HV6734;SPC MD       -    72,997.950   450,331.324   MT  0.99999610   +0 21 40.5
 HV6734;SPC MD       -   239,494.11  1,477,462.02   sFT  0.99999610   +0 21 40.5
 HV6734;UTM  18      - 4,242,596.773   375,486.678   MT  0.99979093   -0 53 00.2
 HV6734
 HV6734!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6734!SPC MD       -   1.00000378  x   0.99999610  =   0.99999988
 HV6734!UTM  18      -   1.00000378  x   0.99979093  =   0.99979471
 HV6734
 HV6734:                Primary Azimuth Mark                     Grid Az
 HV6734:SPC MD       -  DRUM                                     142 36 51.6
 HV6734:UTM  18      -  DRUM                                     143 51 32.3
 HV6734
 HV6734_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7548642596(NAD 83)
 HV6734
 HV6734|---------------------------------------------------------------------|
 HV6734| PID    Reference Object                     Distance      Geod. Az  |
 HV6734|                                                           dddmmss.s |
 HV6734| HV6712 BARREDA 2                            15.067 METERS 04501     |
 HV6734| CX2064 BARREDA 3 RM 4                        8.503 METERS 10507     |
 HV6734| HV6733 DRUM                                487.417 METERS 1425832.1 |
 HV6734| HV6680 USN AIR STA CONT TWR NAB            APPROX. 3.7 KM 1775529.8 |
 HV6734| HV6667 USN AIR STA TALL ELEV TK            APPROX. 6.2 KM 2013535.1 |
 HV6734| CX2065 BARREDA 3 RM 5                        7.518 METERS 20449     |
 HV6734|---------------------------------------------------------------------|
 HV6734
 HV6734                          SUPERSEDED SURVEY CONTROL
 HV6734
 HV6734  NAD 83(1986)-  38 19 22.26558(N)    076 25 27.94570(W) AD(       ) 2
 HV6734  NAD 27      -  38 19 21.81752(N)    076 25 29.11466(W) AD(       ) 2
 HV6734  NGVD 29 (01/23/89)   11.     (m)           36.     (f) VERT ANG       
 HV6734
 HV6734.Superseded values are not recommended for survey control.
 HV6734
 HV6734.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6734.See file dsdata.pdf to determine how the superseded data were derived.
 HV6734
 HV6734_MARKER: DH = HORIZONTAL CONTROL DISK
 HV6734_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6734_STAMPING: BARREDA 3 1975
 HV6734_MARK LOGO: NGS
 HV6734_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV6734_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6734+STABILITY: SURFACE MOTION
 HV6734
 HV6734  HISTORY     - Date     Condition        Report By
 HV6734  HISTORY     - 1975     MONUMENTED       NGS
 HV6734  HISTORY     - 1981     GOOD             MDDNR
 HV6734  HISTORY     - 1987     GOOD             NOS
 HV6734
 HV6734                          STATION DESCRIPTION
 HV6734
 HV6734'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HV6734'ALL OBJECTS V.G.
 HV6734'
 HV6734'BARREDA 2 1952 TRAVERSE.
 HV6734'
 HV6734'THE STATION IS LOCATED ABOUT 5 AIRLINE MILES SOUTHEAST OF LUSBY, 3
 HV6734'MILES EAST OF SOLOMONS, AND JUST NORTHWEST OF DRUM POINT.  THE
 HV6734'PROPERTY IS OWNED BY MR. WILLIAM ICKES AND MR. ICKES RESIDES IN THE
 HV6734'FIRST HOUSE TO THE NORTHEAST OF THE STATION.
 HV6734'
 HV6734'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 2, 4, AND 760, WHICH
 HV6734'IS 3 MILES SOUTH OF LUSBY, GO SOUTHEAST ON STATE HIGHWAY 760 FOR
 HV6734'1.3 MILES TO A SIDE ROAD LEFT.  TURN LEFT AND FOLLOW ROUSBY HALL
 HV6734'ROAD NORTHEAST, SOUTHEAST, AND SOUTH FOR 1.8 MILES TO A SIDE ROAD
 HV6734'LEFT.  TURN LEFT AND GO EAST ON A PAVED ROAD FOR 0.2 MILE TO A
 HV6734'T-INTERSECTION.  TURN RIGHT AND GO SOUTH ON BARREDA BOULEVARD
 HV6734'FOR 0.65 MILES TO THE NORTH SHORE OF THE PATUXENT RIVER.  TURN
 HV6734'LEFT AND GO SOUTHEAST ON BARREDA BOULEVARD FOR 0.1 MILE TO THE
 HV6734'STATION ON THE LEFT.  CONTINUE SOUTHEAST AND SOUTH ON BARREDA
 HV6734'BOULEVARD FOR 0.25 MILE TO THE MOST SOUTHEAST POINT OF LAND AND
 HV6734'DRUM (USN) (ASI MK) ON THE POINT.
 HV6734'
 HV6734'THE STATION MARK IS A STANDARD DISK STAMPED BARREDA 3 1975, SET
 HV6734'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HV6734'WITH THE SURFACE.  IT IS 20 FEET NORTHWEST OF THE CENTER OF A DRIVE
 HV6734'LEADING TO MR. ICKES HOME, 14 FEET NORTHEAST OF THE CENTER OF
 HV6734'BARREDA BOULEVARD, 45.5 FEET WEST OF THE SOUTHWEST CORNER OF MR.
 HV6734'ICKES GARAGE AND 1.5 FEET SOUTHWEST OF A WITNESS POST.
 HV6734'
 HV6734'REFERENCE MARK 4 IS A STANDARD DISK STAMPED BARREDA 3 NO 4 1975,
 HV6734'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HV6734'WITH THE SURFACE.  IT IS 46 FEET SOUTHWEST OF THE SOUTHWEST CORNER
 HV6734'OF MR. ICKES GARAGE, 13 FEET NORTHEAST OF THE CENTER OF BARREDA
 HV6734'BOULEVARD AND 28 FEET SOUTHEAST OF THE WITNESS POST.
 HV6734'
 HV6734'REFERENCE MARK 5 IS A STANDARD DISK STAMPED BARREDA 3 NO 5 1975,
 HV6734'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HV6734'WITH THE SURFACE.  IT IS 70 FEET WEST OF THE SOUTHWEST CORNER OF
 HV6734'MR. ICKES GARAGE, 10 FEET SOUTHWEST OF THE CENTER OF BARREDA
 HV6734'BOULEVARD, AND 25 FEET SOUTHWEST OF THE WITNESS POST.
 HV6734'
 HV6734'THE AZIMUTH MARK IS A UNITED STATES NAVY DEPARTMENT TRIANGULATION
 HV6734'STATION DISK STAMPED DRUM 1972, SET IN CEMENT IN THE CENTER OF A
 HV6734'6-INCH ROUND PIPE WHICH PROJECTS 1 FOOT.  IT IS 91.5 FEET SOUTHEAST
 HV6734'OF A POWERLINE POLE NUMBERED CP 24, 37 FEET NORTHWEST OF THE MOST
 HV6734'NORTHWEST ONE OF 6 STEEL PILES, 10 FEET NORTHWEST OF THE SHORE
 HV6734'WHERE THE PATUXENT RIVER JOINS THE CHESAPEAKE BAY, AND ABOUT 150
 HV6734'FEET NORTHWEST OF A LARGE NAVIGATION AID.
 HV6734'
 HV6734'NEAREST TOWN--AT DRUM POINT.
 HV6734
 HV6734                          STATION RECOVERY (1981)
 HV6734
 HV6734'RECOVERY NOTE BY MD DEPT OF NAT RES 1981 (LW)
 HV6734'BARREDA 3 1975 RECOVERED GOOD.  STA. ON LAND CONTROLLED BY
 HV6734'CHESAPEAKE RANCH CLUB AND IS BEHIND LOCKED GATE - TO GAIN ACCESS
 HV6734'CALL MR ZEGLIN AT CHESAPEAKE RANCH CLUB (326-3182) FOR KEY.  RMS
 HV6734'SEARCHED FOR AND NOT FD. C AND P POLE 17 HAS BEEN MOVED FROM IN
 HV6734'FRONT OF HOUSE TO A POSITION 3.25 FEET W OF TRIANGULATION MARK.
 HV6734'MARK IS ON LINE BETWEEN POLE 17 AND CEDAR PTLH (V.G.).  MARK IS 29.97
 HV6734'FEET SW OF CENTER OF S. FACE OF BRICK LAMP POST ON LEFT SIDE OF
 HV6734'GARAGE.  PROPERTY OWNER KNOWS LOCATION OF MARK, WHICH IS FLUSH
 HV6734'W/GROUND.  KEY FOR GATE TO END OF POINT TO AZ MK (DRUM USN) CAN
 HV6734'ALSO BE OBTAINED AT RANCH CLUB.  PROPERTY OWNER OF LOT WHERE STA IS
 HV6734'LOCATED IS W.N.  ICKES BOX 426 DRUM PT ESTATES - SOLOMENS.
 HV6734
 HV6734                          STATION RECOVERY (1987)
 HV6734
 HV6734'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1987 (REM)
 HV6734'THE STATION WAS RECOVERED AT THIS DATE.
 HV6734'STATION WAS RECOVERED IN GOOD CONDITION.
 HV6734'
 HV6734'HEIGHT OF LIGHT SHOWN WAS 1.500 METERS ABOVE THE MARK.
 HV6734'
 HV6734'PUBLISHED DESCRIPTION IS ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7977 ***********************************************************************
 AJ7977  HT_MOD      -  This is a Height Modernization Survey Station.
 AJ7977  FBN         -  This is a Federal Base Network Control Station.
 AJ7977  DESIGNATION -  BARREL
 AJ7977  PID         -  AJ7977
 AJ7977  STATE/COUNTY-  MD/ALLEGANY
 AJ7977  COUNTRY     -  US
 AJ7977  USGS QUAD   -  CUMBERLAND (2016)
 AJ7977
 AJ7977                         *CURRENT SURVEY CONTROL
 AJ7977  ______________________________________________________________________
 AJ7977* NAD 83(2011) POSITION- 39 42 03.20120(N) 078 50 36.80481(W)   ADJUSTED
 AJ7977* NAD 83(2011) ELLIP HT-   266.118 (meters)        (06/27/12)   ADJUSTED
 AJ7977* NAD 83(2011) EPOCH   -  2010.00
 AJ7977* NAVD 88 ORTHO HEIGHT -   298.5   (meters)      979.    (feet) GPS OBS
 AJ7977  ______________________________________________________________________
 AJ7977  GEOID HEIGHT    -        -32.354 (meters)                     GEOID18
 AJ7977  NAD 83(2011) X  -    950,840.202 (meters)                     COMP
 AJ7977  NAD 83(2011) Y  - -4,821,327.518 (meters)                     COMP
 AJ7977  NAD 83(2011) Z  -  4,052,659.011 (meters)                     COMP
 AJ7977  LAPLACE CORR    -         -6.92  (seconds)                    DEFLEC18
 AJ7977
 AJ7977  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7977  Standards:
 AJ7977         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7977            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7977  -------------------------------------------------------------------
 AJ7977  NETWORK    0.60   1.14           0.27   0.21   0.58      0.00649958
 AJ7977  -------------------------------------------------------------------
 AJ7977  Click here for local accuracies and other accuracy information.
 AJ7977
 AJ7977.The horizontal coordinates were established by GPS observations
 AJ7977.and adjusted by the National Geodetic Survey in June 2012.
 AJ7977
 AJ7977.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7977.been affixed to the stable North American tectonic plate. See 
 AJ7977.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7977
 AJ7977.The horizontal coordinates are valid at the epoch date displayed above
 AJ7977.which is a decimal equivalence of Year/Month/Day.
 AJ7977
 AJ7977.The orthometric height was determined by GPS observations and a
 AJ7977.high-resolution geoid model using precise GPS observation and
 AJ7977.processing techniques.
 AJ7977
 AJ7977.No vertical observational check was made to the station.
 AJ7977
 AJ7977.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7977.GEOID18 height accuracy estimate available here.
 AJ7977
 AJ7977.Click photographs - Photos may exist for this station.
 AJ7977
 AJ7977.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7977
 AJ7977.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7977
 AJ7977.The ellipsoidal height was determined by GPS observations
 AJ7977.and is referenced to NAD 83.
 AJ7977
 AJ7977. The following values were computed from the NAD 83(2011) position.
 AJ7977
 AJ7977;                    North         East     Units Scale Factor Converg.
 AJ7977;SPC MD       -   227,416.273   241,889.110   MT  1.00005353   -1 09 25.5
 AJ7977;SPC MD       -   746,114.89    793,597.86   sFT  1.00005353   -1 09 25.5
 AJ7977;UTM  17      - 4,396,782.731   684,882.091   MT  1.00002084   +1 22 40.4
 AJ7977
 AJ7977!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7977!SPC MD       -   0.99995825  x   1.00005353  =   1.00001178
 AJ7977!UTM  17      -   0.99995825  x   1.00002084  =   0.99997909
 AJ7977
 AJ7977_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8488296782(NAD 83)
 AJ7977
 AJ7977                          SUPERSEDED SURVEY CONTROL
 AJ7977
 AJ7977  NAD 83(2007)-  39 42 03.20136(N)    078 50 36.80550(W) AD(2002.00) 0
 AJ7977  ELLIP H (02/10/07)  266.144  (m)                       GP(2002.00)    
 AJ7977  NAD 83(1991)-  39 42 03.20147(N)    078 50 36.80588(W) AD(       ) A
 AJ7977  ELLIP H (02/12/02)  266.151  (m)                       GP(       ) 4 1
 AJ7977  NAVD 88 (02/12/02)  298.5    (m)  GEOID99  model used  GPS OBS        
 AJ7977
 AJ7977.Superseded values are not recommended for survey control.
 AJ7977
 AJ7977.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7977.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7977
 AJ7977_MARKER: DD = SURVEY DISK
 AJ7977_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 AJ7977_SP_SET: BRIDGE BACKWALL
 AJ7977_STAMPING: BARREL 1993
 AJ7977_MARK LOGO: MDSHA
 AJ7977_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ7977_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ7977_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7977+SATELLITE: SATELLITE OBSERVATIONS - October 03, 2021
 AJ7977
 AJ7977  HISTORY     - Date     Condition        Report By
 AJ7977  HISTORY     - 1993     MONUMENTED       MDSHA
 AJ7977  HISTORY     - 20000327 GOOD             MDSHA
 AJ7977  HISTORY     - 20100427 GOOD             INDIV
 AJ7977  HISTORY     - 20211003 GOOD             GEOPRO
 AJ7977
 AJ7977                          STATION DESCRIPTION
 AJ7977
 AJ7977'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7977'THE STATION IS LOCATED ABOUT 5.5 MILES (8.9 KM) NORTHEAST OF
 AJ7977'FROSTBURG, AND 5.5 MILES (8.9 KM) NORTHWEST OF CUMBERLAND.  TO REACH
 AJ7977'THE STATION FROM THE INTERSECTION OF U.S.HIGHWAY 40 AND MARYLAND
 AJ7977'HIGHWAY 36 (MOUNT SAVAGE ROAD) AT THE NARROWS JUST WEST OF CUMBERLAND,
 AJ7977'GO NORTHWEST ON MARYLAND HIGHWAY 36 FOR 4.7 MILES (7.6 KM) TO THE
 AJ7977'STATION ON THE RIGHT.  THE STATION IS A STANDARD MARYLAND STATE
 AJ7977'HIGHWAY SURVEY DISK SET IN THE EXPANSION JOINT AT THE NORTHWEST END OF
 AJ7977'BRIDGE 1078 OVER NORTH JENNINGS RUN, ON THE NORTH SIDE OF STATE
 AJ7977'HIGHWAY 36, IN THE TOWN OF BARRELVILLE.  IT IS 45.0 FEET (13.7 M)
 AJ7977'NORTH OF THE CENTER LINE OF THE HIGHWAY, AND 286.0 FEET (87.2 M) WEST
 AJ7977'OF THE CENTER LINE OF MARYLAND HIGHWAY 47 (BARRELVILLE ROAD) .
 AJ7977
 AJ7977                          STATION RECOVERY (2010)
 AJ7977
 AJ7977'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2010 (RAS)
 AJ7977'STATION WAS RECOVERED IN GOOD CONDITION WITH THE FOLLOWING
 AJ7977'OBSERVATIONS. THE WESTERN MARYLAND RAILROAD IS NOW ABANDONED. ALL
 AJ7977'TRACK AND FIXTURES HAVE BEEN REMOVED INCLUDING THE STATION BUILDING AT
 AJ7977'LITTLE ORLEANS. THE SITE IS HEAVILY OVERGROWN AND IS LOCATED BETWEEN
 AJ7977'THE MARTIN CEMETERY AND THE C+O CANAL NATIONAL HISTORICAL PARK.
 AJ7977'THE STATION IS SET INTO THE CONCRETE COPING IN THE SOUTHWEST CORNER OF
 AJ7977'THE ABANDONED RAILROAD BRIDGE OVER HIGH GERMANY RD, 14.3 FEET
 AJ7977'NORTHWEST OF A DETERIORATED WOODEN GUARDRAIL POST, 16.5 FEET NORTHEAST
 AJ7977'OF A POLE BARRACADE, 75.5 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A
 AJ7977'BUILDING KNOWN AS BILLS PLACE BAR, FLUSH WITH THE CONCRETE COPING AND
 AJ7977'.6 FEET ABOVE GRADE. DIGITAL PHOTOS SUBMITTED VIA CD. RAS/TES
 AJ7977
 AJ7977                          STATION RECOVERY (2021)
 AJ7977
 AJ7977'RECOVERY NOTE BY GEOPRO CONSULTANTS LLC 2021 (CTS)
 AJ7977'STATION RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6657 ***********************************************************************
 HV6657  DESIGNATION -  BARREN 1912
 HV6657  PID         -  HV6657
 HV6657  STATE/COUNTY-  MD/DORCHESTER
 HV6657  COUNTRY     -  US
 HV6657  USGS QUAD   -  BARREN ISLAND (2016)
 HV6657
 HV6657                         *CURRENT SURVEY CONTROL
 HV6657  ______________________________________________________________________
 HV6657* NAD 83(1991) POSITION- 38 18 48.35959(N) 076 15 05.03969(W)   ADJUSTED
 HV6657* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6657  ______________________________________________________________________
 HV6657  GEOID HEIGHT    -        -35.068 (meters)                     GEOID18
 HV6657  LAPLACE CORR    -         -6.40  (seconds)                    DEFLEC18
 HV6657  HORZ ORDER      -  THIRD
 HV6657
 HV6657.The horizontal coordinates were established by classical geodetic methods
 HV6657.and adjusted by the National Geodetic Survey in January 1992.
 HV6657
 HV6657.The orthometric height was scaled from a topographic map.
 HV6657
 HV6657.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6657.GEOID18 height accuracy estimate available here.
 HV6657
 HV6657.Click photographs - Photos may exist for this station.
 HV6657
 HV6657.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6657
 HV6657. The following values were computed from the NAD 83(1991) position.
 HV6657
 HV6657;                    North         East     Units Scale Factor Converg.
 HV6657;SPC MD       -    72,062.411   465,469.668   MT  0.99999769   +0 28 11.4
 HV6657;SPC MD       -   236,424.76  1,527,128.40   sFT  0.99999769   +0 28 11.4
 HV6657;UTM  18      - 4,241,332.772   390,597.668   MT  0.99974740   -0 46 33.2
 HV6657
 HV6657!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6657!SPC MD       -   1.00000538  x   0.99999769  =   1.00000307
 HV6657!UTM  18      -   1.00000538  x   0.99974740  =   0.99975278
 HV6657
 HV6657:                Primary Azimuth Mark                     Grid Az
 HV6657:SPC MD       -  HOOPER ISLAND LIGHTHOUSE                 178 14 52.3
 HV6657:UTM  18      -  HOOPER ISLAND LIGHTHOUSE                 179 29 36.9
 HV6657
 HV6657_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9059741332(NAD 83)
 HV6657
 HV6657|---------------------------------------------------------------------|
 HV6657| PID    Reference Object                     Distance      Geod. Az  |
 HV6657|                                                           dddmmss.s |
 HV6657| HV6662 HOOPER ISLAND LIGHTHOUSE            APPROX. 6.3 KM 1784303.7 |
 HV6657|---------------------------------------------------------------------|
 HV6657
 HV6657                          SUPERSEDED SURVEY CONTROL
 HV6657
 HV6657  NAD 83(1986)-  38 18 48.35905(N)    076 15 05.05605(W) AD(       ) 3
 HV6657  NAD 27      -  38 18 47.91200(N)    076 15 06.25600(W) AD(       ) 3
 HV6657  USSD        -  38 18 48.28800(N)    076 15 06.00400(W) AD(       ) 3
 HV6657
 HV6657.Superseded values are not recommended for survey control.
 HV6657
 HV6657.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6657.See file dsdata.pdf to determine how the superseded data were derived.
 HV6657
 HV6657_MARKER: N = NAIL
 HV6657_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6657_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6657+STABILITY: SURFACE MOTION
 HV6657
 HV6657  HISTORY     - Date     Condition        Report By
 HV6657  HISTORY     - 1912     MONUMENTED       CGS
 HV6657  HISTORY     - 1929     MARK NOT FOUND   CGS
 HV6657
 HV6657                          STATION DESCRIPTION
 HV6657
 HV6657'DESCRIBED BY COAST AND GEODETIC SURVEY 1912 (JBB)
 HV6657'STATION IS ON E SIDE OF CHESAPEAKE BAY, NEAR THE S END OF BARREN
 HV6657'ISLAND, ABOUT 160 METERS NW OF A POINT WHERE THE ISLAND CONTRACTS
 HV6657'TO A LONG NARROW NECK OF LAND, ON A STRIP OF FIRM SANDY SOIL,
 HV6657'ABOUT 50 FEET BACK FROM THE SHORE LINE, AND ABOUT 50 FEET S OF
 HV6657'PINE-TREE GROWTH.  MARKED BY A CEMENT BLOCK 6- BY 6- 24-INCHES,
 HV6657'EXTENDING 6 INCHES ABOVE THE SURFACE, WITH A TRIANGLE, THE YEAR
 HV6657'1912 AND THE LETTERS C.G.S. IN THE TOP.  SUBSURFACE MARK IS A
 HV6657'CEMENT BLOCK 6- BY 6- BY 9-INCHES, BURIED 3 FEET BELOW THE
 HV6657'SURFACE.  NAIL IN CENTER OF TOP BLOCK MARKS POINT.  REFERENCE
 HV6657'MARKS ARE TRIANGULAR BLAZES IN PINE TREES, WITH THE
 HV6657'FOLLOWING DISTANCES AND BEARINGS--TREE A, 86 FEET, N 42 DEG
 HV6657'04 MIN W.  TREE B, 104 FEET, S 51 DEG 19 MIN E.
 HV6657
 HV6657                          STATION RECOVERY (1929)
 HV6657
 HV6657'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (JS)
 HV6657'A SEARCH OF FORTY-FIVE MINUTES WAS MADE BY FOUR MEN BUT STATION
 HV6657'WAS NOT FOUND.  A PINE TREE WITH A TRIANGULAR BLAZE ON THE SEAWARD
 HV6657'SIDE WAS FOUND AND IT IS BELIEVED THIS WAS TREE B, ONE OF THE
 HV6657'REFERENCE MARKS REFERRED TO IN THE OLD DESCRIPTION.
 HV6657'
 HV6657'THIS TREE WAS ONLY 18 FEET NE OF THE HIGH-WATER LINE, AND
 HV6657'JUDGING FROM THE DISTANCE (104 FEET) AND BEARING (S 51 DEG 19 MIN E)
 HV6657'GIVEN IN THE OLD DESCRIPTION, IT SEEMS THAT THE STATION HAS BEEN
 HV6657'WASHED AWAY.  SEVERAL OTHER PINE TREES STOOD IN THE VICINITY BUT
 HV6657'NO OTHER BLAZE WAS FOUND.
 HV6657'
 HV6657'IT IS RECOMMENDED THAT STATION BE CONSIDERED LOST AND ELIMINATED
 HV6657'FROM THE RECORDS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6760 ***********************************************************************
 HV6760  DESIGNATION -  BARS MSFC 1908
 HV6760  PID         -  HV6760
 HV6760  STATE/COUNTY-  MD/ST MARYS
 HV6760  COUNTRY     -  US
 HV6760  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6760
 HV6760                         *CURRENT SURVEY CONTROL
 HV6760  ______________________________________________________________________
 HV6760* NAD 83(1993) POSITION- 38 23 00.75394(N) 076 32 12.50435(W)   ADJUSTED
 HV6760* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV6760  ______________________________________________________________________
 HV6760  GEOID HEIGHT    -        -34.136 (meters)                     GEOID18
 HV6760  LAPLACE CORR    -         -5.15  (seconds)                    DEFLEC18
 HV6760  HORZ ORDER      -  SECOND
 HV6760
 HV6760.The horizontal coordinates were established by classical geodetic methods
 HV6760.and adjusted by the National Geodetic Survey in November 1994.
 HV6760
 HV6760.The orthometric height was scaled from a topographic map.
 HV6760
 HV6760.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6760.GEOID18 height accuracy estimate available here.
 HV6760
 HV6760.Click photographs - Photos may exist for this station.
 HV6760
 HV6760.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6760
 HV6760. The following values were computed from the NAD 83(1993) position.
 HV6760
 HV6760;                    North         East     Units Scale Factor Converg.
 HV6760;SPC MD       -    79,678.955   440,469.882   MT  0.99998652   +0 17 26.6
 HV6760;SPC MD       -   261,413.37  1,445,108.27   sFT  0.99998652   +0 17 26.6
 HV6760;UTM  18      - 4,249,489.165   365,774.506   MT  0.99982188   -0 57 15.8
 HV6760
 HV6760!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6760!SPC MD       -   1.00000446  x   0.99998652  =   0.99999098
 HV6760!UTM  18      -   1.00000446  x   0.99982188  =   0.99982634
 HV6760
 HV6760:                Primary Azimuth Mark                     Grid Az
 HV6760:SPC MD       -  WHEAT                                    071 48 40.5
 HV6760:UTM  18      -  WHEAT                                    073 03 22.9
 HV6760
 HV6760_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6577449489(NAD 83)
 HV6760
 HV6760|---------------------------------------------------------------------|
 HV6760| PID    Reference Object                     Distance      Geod. Az  |
 HV6760|                                                           dddmmss.s |
 HV6760| HV6771 PEAK                                APPROX. 3.1 KM 0263741.2 |
 HV6760| HV6762 WHEAT                               APPROX. 2.6 KM 0720607.1 |
 HV6760| HV6761 BARS MSFC 1908 RM                    14.544 METERS 18954     |
 HV6760| HV6774 BROOMS                              APPROX. 2.9 KM 3330725.9 |
 HV6760|---------------------------------------------------------------------|
 HV6760
 HV6760                          SUPERSEDED SURVEY CONTROL
 HV6760
 HV6760  NAD 83(1991)-  38 23 00.75383(N)    076 32 12.50474(W) AD(       ) 2
 HV6760  NAD 83(1986)-  38 23 00.75352(N)    076 32 12.51884(W) AD(       ) 2
 HV6760  NAD 27      -  38 23 00.30300(N)    076 32 13.68200(W) AD(       ) 2
 HV6760  USSD        -  38 23 00.66600(N)    076 32 13.424  (W) AD(       ) 3
 HV6760
 HV6760.Superseded values are not recommended for survey control.
 HV6760
 HV6760.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6760.See file dsdata.pdf to determine how the superseded data were derived.
 HV6760
 HV6760_MARKER: Z = SEE DESCRIPTION
 HV6760_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6760_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6760
 HV6760  HISTORY     - Date     Condition        Report By
 HV6760  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6760  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV6760  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6760
 HV6760                          STATION DESCRIPTION
 HV6760
 HV6760'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (OWF)
 HV6760'ON THE SW SHORE OF PATUXENT RIVER, ON SOTTERLY POINT, ABOUT 1/4
 HV6760'MILE NW OF SOTTERLY WHARF, ON HIGHEST POINT OF BANK, 30 FEET ABOVE
 HV6760'HIGH WATER, 5 YARDS S OF EDGE OF BANK AT RAIL FENCE, AND 2 YARDS
 HV6760'E OF THIS SAME FENCE.
 HV6760'
 HV6760'STATION IS MARKED BY NOZZLE OF PICKLE BOTTLE 22 INCHES BELOW
 HV6760'SURFACE OF GROUND.  ABOVE THIS IS A 4-INCH DRAIN TILE FILLED WITH
 HV6760'AND SURROUNDED BY CEMENT, AND PROJECTING 4 INCHES ABOVE SURFACE OF
 HV6760'GROUND.
 HV6760'
 HV6760'REFERENCE MARK IS CENTER OF TRIANGLE ON STANDARD CEMENT MONUMENT
 HV6760'OF MARYLAND SHELL FISH SURVEY.  IT IS 14.53 METERS (47.7 FEET)
 HV6760'FROM STATION S 9 DEG 54 MIN W.
 HV6760'
 HV6760'DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV6760'REFERENCE ARE AS FOLLOWS--
 HV6760'
 HV6760'SMOKE PIPE ON RIGHT END OF HOUSE, 1/4 MILE, S 49 DEG 43 MIN W.
 HV6760'TANGENT OF POINT OF LAND, 1-1/2 MILES, N 37 DEG 7 MIN W.  PETERSON
 HV6760'HOUSE CHIMNEY, 1-3/4 MILES, N 71 DEG 28 MIN E.  WINDMILL, 3 MILES
 HV6760'S 84 DEG 31 MIN E.  CHIMNEY OF HOUSE, 4 MILES, S 66 DEG 4 MIN E.
 HV6760
 HV6760                          STATION RECOVERY (1930)
 HV6760
 HV6760'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6760'STATION LOST.
 HV6760
 HV6760                          STATION RECOVERY (1943)
 HV6760
 HV6760'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6760'A THOROUGH SEARCH WAS MADE FOR THIS STATION BUT IT COULD NOT BE
 HV6760'FOUND.  A MONUMENT, NOW SERVING AS A REFERENCE MARK FOR STATION
 HV6760'SOTTLER 1942, AND DESCRIBED AS THE REFERENCE MARK FOR THIS
 HV6760'STATION, WAS FOUND.
 HV6760'
 HV6760'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6761 ***********************************************************************
 HV6761  DESIGNATION -  BARS MSFC 1908 RM
 HV6761  PID         -  HV6761
 HV6761  STATE/COUNTY-  MD/ST MARYS
 HV6761  COUNTRY     -  US
 HV6761  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6761
 HV6761                         *CURRENT SURVEY CONTROL
 HV6761  ______________________________________________________________________
 HV6761* NAD 83(1993) POSITION- 38 23 00.28922(N) 076 32 12.60741(W)   ADJUSTED
 HV6761* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV6761  ______________________________________________________________________
 HV6761  GEOID HEIGHT    -        -34.136 (meters)                     GEOID18
 HV6761  LAPLACE CORR    -         -5.16  (seconds)                    DEFLEC18
 HV6761  HORZ ORDER      -  SECOND
 HV6761
 HV6761.The horizontal coordinates were established by classical geodetic methods
 HV6761.and adjusted by the National Geodetic Survey in November 1994.
 HV6761
 HV6761.The orthometric height was scaled from a topographic map.
 HV6761
 HV6761.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6761.GEOID18 height accuracy estimate available here.
 HV6761
 HV6761.Click photographs - Photos may exist for this station.
 HV6761
 HV6761.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6761
 HV6761. The following values were computed from the NAD 83(1993) position.
 HV6761
 HV6761;                    North         East     Units Scale Factor Converg.
 HV6761;SPC MD       -    79,664.614   440,467.454   MT  0.99998654   +0 17 26.5
 HV6761;SPC MD       -   261,366.32  1,445,100.31   sFT  0.99998654   +0 17 26.5
 HV6761;UTM  18      - 4,249,474.882   365,771.767   MT  0.99982189   -0 57 15.8
 HV6761
 HV6761!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6761!SPC MD       -   1.00000446  x   0.99998654  =   0.99999100
 HV6761!UTM  18      -   1.00000446  x   0.99982189  =   0.99982635
 HV6761
 HV6761_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6577149474(NAD 83)
 HV6761
 HV6761                          SUPERSEDED SURVEY CONTROL
 HV6761
 HV6761  NAD 83(1991)-  38 23 00.28915(N)    076 32 12.60779(W) AD(       ) 2
 HV6761  NAD 83(1986)-  38 23 00.28886(N)    076 32 12.62189(W) AD(       ) 2
 HV6761  NAD 27      -  38 22 59.83900(N)    076 32 13.78500(W) AD(       ) 2
 HV6761
 HV6761.Superseded values are not recommended for survey control.
 HV6761
 HV6761.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6761.See file dsdata.pdf to determine how the superseded data were derived.
 HV6761
 HV6761_MARKER: Z = SEE DESCRIPTION
 HV6761_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6761_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6761+STABILITY: SURFACE MOTION
 HV6761
 HV6761  HISTORY     - Date     Condition        Report By
 HV6761  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6761
 HV6761                          STATION DESCRIPTION
 HV6761
 HV6761'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908
 HV6761'ON THE SW SHORE OF PATUXENT RIVER, ON SOTTERLY POINT, ABOUT 1/4
 HV6761'MILE NW OF SOTTERLY WHARF, ON HIGHEST POINT OF BANK, 30 FEET ABOVE
 HV6761'HIGH WATER, 5 YARDS S OF EDGE OF BANK AT RAIL FENCE, AND 2 YARDS
 HV6761'E OF THIS SAME FENCE.
 HV6761'
 HV6761'REFERENCE MARK IS CENTER OF TRIANGLE ON STANDARD CEMENT MONUMENT
 HV6761'OF MARYLAND SHELL FISH SURVEY.  IT IS 14.53 METERS (47.7 FEET)
 HV6761'FROM STATION SOTTLER S 9 DEG 54 MIN W.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4576 ***********************************************************************
 JV4576  DESIGNATION -  BART
 JV4576  PID         -  JV4576
 JV4576  STATE/COUNTY-  MD/FREDERICK
 JV4576  COUNTRY     -  US
 JV4576  USGS QUAD   -  WALKERSVILLE (2016)
 JV4576
 JV4576                         *CURRENT SURVEY CONTROL
 JV4576  ______________________________________________________________________
 JV4576* NAD 83(1991) POSITION- 39 24 26.74092(N) 077 19 32.25532(W)   ADJUSTED
 JV4576* NAVD 88 ORTHO HEIGHT -   210.71  (+/-2cm)      691.3   (feet) VERTCON3
 JV4576  ______________________________________________________________________
 JV4576  GEOID HEIGHT    -        -32.485 (meters)                     GEOID18
 JV4576  LAPLACE CORR    -          5.91  (seconds)                    DEFLEC18
 JV4576  HORZ ORDER      -  FIRST
 JV4576  VERT ORDER      -  THIRD ? (See Below)
 JV4576
 JV4576.The horizontal coordinates were established by classical geodetic methods
 JV4576.and adjusted by the National Geodetic Survey in January 1992.
 JV4576
 JV4576.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4576.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4576
 JV4576.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4576.GEOID18 height accuracy estimate available here.
 JV4576
 JV4576.The vertical order pertains to the NGVD 29 superseded value.
 JV4576
 JV4576.Click photographs - Photos may exist for this station.
 JV4576
 JV4576.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4576
 JV4576. The following values were computed from the NAD 83(1991) position.
 JV4576
 JV4576;                    North         East     Units Scale Factor Converg.
 JV4576;SPC MD       -   193,287.197   371,954.896   MT  0.99999283   -0 12 15.7
 JV4576;SPC MD       -   634,143.08  1,220,322.02   sFT  0.99999283   -0 12 15.7
 JV4576;UTM  18      - 4,364,571.420   299,769.156   MT  1.00009365   -1 28 36.7
 JV4576
 JV4576!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4576!SPC MD       -   0.99997204  x   0.99999283  =   0.99996487
 JV4576!UTM  18      -   0.99997204  x   1.00009365  =   1.00006569
 JV4576
 JV4576:                Primary Azimuth Mark                     Grid Az
 JV4576:SPC MD       -  BART AZ MK RESET                         151 35 55.9
 JV4576:UTM  18      -  BART AZ MK RESET                         152 52 16.9
 JV4576
 JV4576_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9976964571(NAD 83)
 JV4576
 JV4576|---------------------------------------------------------------------|
 JV4576| PID    Reference Object                     Distance      Geod. Az  |
 JV4576|                                                           dddmmss.s |
 JV4576| CK6582 BART RM 1                            27.800 METERS 06558     |
 JV4576| JV4239 MT AIRY MUNICIPAL TANK              APPROX.15.4 KM 1013346.4 |
 JV4576| JV4218 RIDGEVILLE NURSERIES TANK           APPROX.14.5 KM 1090749.4 |
 JV4576| CK6581 BART AZ MK RESET                                   1512340.2 |
 JV4576| CK6583 BART RM 2                            18.271 METERS 18859     |
 JV4576| CK6580 BART AZ MK                                         2350114.5 |
 JV4576| JV4600 FREDERICK MD SCH FOR DEAF FIN       APPROX. 7.3 KM 2710502.0 |
 JV4576| JV4610 FREDERICK ST JOHNS CATHOLIC CH      APPROX. 7.1 KM 2773410.5 |
 JV4576| JV4612 FREDERICK OX FIBRE BRUSH CO TK      APPROX. 6.6 KM 2781942.6 |
 JV4576| JV4599 FREDERICK MEMORIAL HOSP STACK       APPROX. 7.7 KM 2812937.6 |
 JV4576|---------------------------------------------------------------------|
 JV4576
 JV4576                          SUPERSEDED SURVEY CONTROL
 JV4576
 JV4576  NAD 83(1986)-  39 24 26.74135(N)    077 19 32.26500(W) AD(       ) 1
 JV4576  NAD 27      -  39 24 26.37400(N)    077 19 33.32300(W) AD(       ) 1
 JV4576  NGVD 29             210.92   (m)          692.0    (f) LEVELING    3  
 JV4576
 JV4576.Superseded values are not recommended for survey control.
 JV4576
 JV4576.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4576.See file dsdata.pdf to determine how the superseded data were derived.
 JV4576
 JV4576_MARKER: DS = TRIANGULATION STATION DISK
 JV4576_SETTING: 66 = SET IN ROCK OUTCROP
 JV4576_STAMPING: BART 1939
 JV4576_MARK LOGO: CGS
 JV4576_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4576+STABILITY: POSITION/ELEVATION WELL
 JV4576_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4576+SATELLITE: SATELLITE OBSERVATIONS - November 01, 2001
 JV4576
 JV4576  HISTORY     - Date     Condition        Report By
 JV4576  HISTORY     - 1939     MONUMENTED       CGS
 JV4576  HISTORY     - 1943     GOOD             CGS
 JV4576  HISTORY     - 1958     GOOD             CGS
 JV4576  HISTORY     - 1969     GOOD             CGS
 JV4576  HISTORY     - 20011101 GOOD             DMW
 JV4576
 JV4576                          STATION DESCRIPTION
 JV4576
 JV4576'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4576'STATION BART IS LOCATED ON HIGH TIMBERED HILL ABOUT 4.5 MILES
 JV4576'E OF FREDERICK, ABOUT 1 MILE N OF U.S. HIGHWAY 40 ON LAND OWNED
 JV4576'BY MR. L.H. HILL.  THE MARK IS SET IN A LARGE ROCK OUTCROP 6 FEET
 JV4576'BY 4 FEET AND PROJECTS 8 INCHES.  IT IS 9.8 FEET N OF A
 JV4576'TRIANGLE-BLAZED 10-INCH OAK TREE AND 19.8 FEET S OF A
 JV4576'TRIANGLE-BLAZED 12-INCH OAK TREE.
 JV4576'
 JV4576'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS WEDGED IN
 JV4576'A DRILL HOLE IN OUTCROPPING BEDROCK.
 JV4576'
 JV4576'AZIMUTH MARK IS A STANDARD BRONZE DISK SET IN CONCRETE.
 JV4576'
 JV4576'REFERENCE MARK NO.1 IS SET IN A DRILL HOLE IN A LARGE ROCK
 JV4576'OUTCROP.  OUTCROP IS APPROXIMATELY 4 BY 5 FEET, AND PROJECTS 2
 JV4576'FEET.  IT IS NE OF THE STATION.
 JV4576'
 JV4576'REFERENCE MARK NO.2 IS SET IN A DRILL HOLE IN A LARGE SLOPING
 JV4576'ROCK OUTCROP WHICH IS APPROXIMATELY 6 FEET LONG, 4 FEET WIDE AND
 JV4576'PROJECTS 2 FEET.  IT IS S BY W OF THE STATION.
 JV4576'
 JV4576'AZIMUTH MARK IS LOCATED ABOUT 1.5 MILES S OF THE STATION ON
 JV4576'LAND OWNED BY B.E. CARPENTER.  IT IS ABOUT 50 FEET E OF THE SE
 JV4576'CORNER OF HIS HOUSE, 2 FEET S OF SW FENCE CORNER AND 18 FEET
 JV4576'NW OF A DIRT ROAD CENTER LINE.
 JV4576'
 JV4576'TO REACH THE STATION FROM JUNCTION OF U.S. HIGHWAY 15 AND
 JV4576'U.S. HIGHWAY 40 IN FREDERICK, GO E ON U.S. HIGHWAY 40 FOR 2.65 MILES
 JV4576'TO BRIDGE OVER MONOCACY RIVER, THEN CONTINUE E ON U.S. HIGHWAY
 JV4576'40 FOR 1.35 MILES TO DIRT CROSSROADS, THEN TURN LEFT AND GO N
 JV4576'ON DIRT ROAD FOR 1.05 MILES, THEN TURN RIGHT AND GO E ON DIRT
 JV4576'ROAD FOR 0.35 MILE TO WHERE MAIN ROAD MAKES A RIGHT TURN AT A
 JV4576'DIM FORK GOING LEFT.  THEN LEAVE MAIN ROAD TURN LEFT AND FOLLOW
 JV4576'THIS OLD TRAIL ROAD NORTHERLY FOR 0.15 MILE TO A FORK, THEN
 JV4576'KEEP LEFT FORK AND GO 0.15 MILE KEEPING ALL RIGHT FORKS, TO A
 JV4576'TRIANGLE BLAZE ON RIGHT ON AN 8-INCH OAK TREE, THEN TURN
 JV4576'RIGHT THROUGH WOODS ABOUT 35 YARDS TO ANOTHER TRIANGLE BLAZE ON
 JV4576'HIGHEST POINT OF RIDGE AND STATION.
 JV4576'
 JV4576'AZIMUTH IS LOCATED 0.3 MILE N OF U.S. HIGHWAY 40 ON THE LEFT
 JV4576'SIDE OF THE DIRT ROAD.
 JV4576'
 JV4576'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV4576
 JV4576                          STATION RECOVERY (1943)
 JV4576
 JV4576'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4576'THE STATION AND ALL MARKS WERE RECOVERED AS DESCRIBED AND FOUND
 JV4576'IN GOOD CONDITION.  FOLLOWING IS A COMPLETE NEW DESCRIPTION--
 JV4576'
 JV4576'THE STATION IS LOCATED ON A HIGH TIMBERED HILL ABOUT 4.5 MILES
 JV4576'E OF FREDERICK AND 1 MILE N OF U.S. HIGHWAY 40, ON LAND OWNED BY
 JV4576'L.H. HALL.  IT IS SET IN A LARGE ROCK OUTCROP AT THE HIGHEST POINT
 JV4576'OF THE HILL, 10 FEET N OF A TRIANGULAR-BLAZED 12-INCH OAK AND
 JV4576'20 FEET S OF ANOTHER TRIANGULAR-BLAZED 12-INCH OAK TREE.  THE
 JV4576'DISK IS STAMPED BART 1939.
 JV4576'
 JV4576'REFERENCE MARK NO.1 IS NE OF THE STATION.  THE DISK IS STAMPED
 JV4576'BART NO.1 1939.
 JV4576'
 JV4576'REFERENCE MARK NO.2 IS S OF THE STATION.  THE DISK IS STAMPED
 JV4576'BART NO.2 1939.
 JV4576'
 JV4576'THE AZIMUTH MARK IS LOCATED ABOUT 1-1/2 MILES SSW OF THE
 JV4576'STATION.  IT IS IN A FENCE CORNER, 50 FEET E OF THE SE CORNER OF
 JV4576'THE HOUSE OF B.E. CARPENTER, 2 FEET SW OF A FENCE CORNER AND
 JV4576'15 FEET N OF A DIRT ROAD.  THE MARK PROJECTS 6 INCHES AND THE
 JV4576'DISK IS STAMPED BART 1939.  (NOTE 11A.) THIS POINT IS 0.3 MILE
 JV4576'N OF WHERE THE ROUTE TO THE STATION LEAVES U.S. HIGHWAY 40 AND
 JV4576'50 YARDS E OF A RIGHT TURN IN THE DIRT ROAD.
 JV4576'
 JV4576'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 40 AND
 JV4576'15 IN FREDERICK GO E ON HIGHWAY 40 FOR 2.65 MILES TO THE MONOCACY
 JV4576'RIVER BRIDGE.  CONTINUE ON U.S. HIGHWAY 40 FOR 1.3 MILES.  TURN
 JV4576'LEFT ON DIRT ROAD FOR 1.0 MILE, (PASSING AZIMUTH MARK AT 0.3 MILE).
 JV4576'TURN RIGHT AND GO E ON DIRT ROAD FOR 0.3 MILE TO A POINT WHERE THE
 JV4576'DIRT ROAD TURNS AND A DIM ROAD LEFT.  TURN LEFT ON DIM ROAD
 JV4576'AND GO 0.15 MILE TO A FORKS.  TAKE LEFT FORK AND THEN FOLLOW
 JV4576'MAIN TRACK ROAD KEEPING ALL RIGHT-HAND ROADS TO A TRIANGULAR
 JV4576'BLAZE ON AN 8-INCH OAK TREE ON THE RIGHT.  HERE TURN RIGHT FOR
 JV4576'ABOUT 50 YARDS TO THE TOP OF THE HILL AND STATION.
 JV4576'
 JV4576'A 77-FOOT TOWER WILL SEE A 74-FOOT LIGHT AT LIBERTY 1939.
 JV4576'
 JV4576'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT TAYLOR.
 JV4576'
 JV4576'A 77-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT RIDGE.
 JV4576'
 JV4576'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAMASCUS.
 JV4576'
 JV4576'A 77-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT CENTER.
 JV4576'
 JV4576'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT COMUS.
 JV4576'
 JV4576'A 77-FOOT TOWER WILL SEE A 60-FOOT LIGHT AT 18-5 (MD.GEOD.S.).
 JV4576'
 JV4576'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4576
 JV4576                          STATION RECOVERY (1958)
 JV4576
 JV4576'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4576'STATION AND REFERENCE MARKS NO. 1 AND 2 RECOVERED AS DESCRIBED
 JV4576'AND FOUND IN GOOD CONDITION.  AZIMUTH MARK WAS FOUND DESTROYED
 JV4576'BY EROSION.  THEREFORE A NEW AZIMUTH MARK WAS ESTABLISHED.  A
 JV4576'CHECK WAS MADE OF THE DISTANCE AND DIRECTION TO THE REFERENCE
 JV4576'MARKS AND FOUND TO BE CORRECT.
 JV4576'
 JV4576'AZIMUTH MARK IS 22 FEET NORTH-NORTHEAST OF APPROXIMATE CENTERLINE
 JV4576'OF ROAD, 15-1/2 FEET NORTH-NORTHWEST OF APPROXIMATE CENTERLINE OF
 JV4576'DRIVEWAY AND 32-1/2 FEET EAST-SOUTHEAST OF A CISTERN.  THE MARK
 JV4576'IS A STANDARD AZIMUTH DISK SET IN A DRILL HOLE IN OUTCROP ROCK
 JV4576'WHICH PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED BART 1939
 JV4576'RESET 1958.  NOTE--17A.
 JV4576'
 JV4576'A NEW TO REACH FOLLOWS--
 JV4576'
 JV4576'TO REACH FROM NEW MARKET, GO WESTERLY ON U.S. HIGHWAY NO. 40 FOR
 JV4576'1.6 MILES TO MUSSETTER ROAD.  CONTINUE WESTERLY ON U.S. HIGHWAY
 JV4576'NO. 40 FOR 1.7 MILES TO SURFACED ROAD RIGHT.  TURN SHARP RIGHT
 JV4576'AND GO NORTHEASTERLY ON SURFACED ROAD FOR 0.1 MILE TO SURFACED
 JV4576'ROAD LEFT (MEADOW ROAD).  TURN LEFT AND GO NORTHERLY ON MEADOW
 JV4576'ROAD FOR 0.55 MILE TO CROSSROADS WHERE SURFACED ROAD TURNS
 JV4576'LEFT.  TURN LEFT AND GO 0.05 MILE TO DRIVEWAY ON RIGHT AND
 JV4576'AZIMUTH MARK ON RIGHT (NORTH) SIDE OF ROAD.  CONTINUE WESTERLY ON
 JV4576'SURFACED ROAD FOR 0.3 MILE TO DRIVEWAY RIGHT JUST PASSED HOUSE ON
 JV4576'RIGHT.  TURN RIGHT AND GO NORTHERLY ON DRIVEWAY AND
 JV4576'WOODS ROAD FOR 0.15 MILE TO TRIANGLE BLAZED TREE ON RIGHT AT
 JV4576'FORKS.  TAKE LEFT FORK AND CONTINUE NORTHERLY KEEPING ALL RIGHT
 JV4576'FORKS FOR 0.15 MILE TO TRIANGLE BLAZED TREE ON RIGHT.  TURN
 JV4576'RIGHT AND GO EASTERLY ON DIM TRACK ROAD FOR 50 YARDS TO
 JV4576'TRIANGLE BLAZED TREE AND STATION.
 JV4576'
 JV4576'NOTE--DUE TO HEAVY GROWTH OF TREES, AZIMUTH MARK IS NOT VG.
 JV4576
 JV4576                          STATION RECOVERY (1969)
 JV4576
 JV4576'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (ALP)
 JV4576'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO
 JV4576'BE IN GOOD CONDITION.  THE 1943 DESCRIPTION AND THE 1958 AZIMUTH
 JV4576'MARK DESCRIPTION AND TO REACH DESCRIPTION ARE ADEQUATE.  THAT WHICH
 JV4576'WAS REFERRED TO AS DRIVEWAY AND WOODS ROAD IN 1958 TO REACH
 JV4576'DESCRIPTION HAS NOW BECOME A STREET WITH SEVERAL NEW HOMES.
 JV4576'
 JV4576'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4576'4-1/2 MILES EAST OF FREDERICK.
 JV4576
 JV4576                          STATION RECOVERY (2001)
 JV4576
 JV4576'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV4576'TO REACH THE STATION FROM RT.144 AT MEADOW GO NORTH TO HALL RD. THEN
 JV4576'LEFT TO WHITE OAK DR. THEN RIGHT TO CHESTNUT OAK CT. THEN LEFT APPROX.
 JV4576'250' THEN PROCEED NORTH UP A ASPHALT DRIVE, BETWEEN BRICK COLUMNS,
 JV4576'350' TO A LARGE ROCK OUTCROP AND THE STATION. RM1,2,3 ALSO FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4742 ***********************************************************************
 AB4742  DESIGNATION -  BARTHOLOW
 AB4742  PID         -  AB4742
 AB4742  STATE/COUNTY-  MD/CARROLL
 AB4742  COUNTRY     -  US
 AB4742  USGS QUAD   -  WINFIELD (2016)
 AB4742
 AB4742                         *CURRENT SURVEY CONTROL
 AB4742  ______________________________________________________________________
 AB4742* NAD 83(2011) POSITION- 39 27 32.50981(N) 077 00 06.49223(W)   ADJUSTED
 AB4742* NAD 83(2011) ELLIP HT-   204.335 (meters)        (06/27/12)   ADJUSTED
 AB4742* NAD 83(2011) EPOCH   -  2010.00
 AB4742* NAVD 88 ORTHO HEIGHT -   236.3   (meters)      775.    (feet) GPS OBS
 AB4742  ______________________________________________________________________
 AB4742  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4742  GEOID HEIGHT    -        -32.002 (meters)                     GEOID99
 AB4742  GEOID HEIGHT    -        -31.992 (meters)                     GEOID18
 AB4742  NAD 83(2011) X  -  1,109,139.930 (meters)                     COMP
 AB4742  NAD 83(2011) Y  - -4,804,902.831 (meters)                     COMP
 AB4742  NAD 83(2011) Z  -  4,031,922.515 (meters)                     COMP
 AB4742  LAPLACE CORR    -         -0.03  (seconds)                    DEFLEC18
 AB4742
 AB4742  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4742  Standards:
 AB4742         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4742            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4742  -------------------------------------------------------------------
 AB4742  NETWORK    6.74  21.64           2.09   3.18  11.04      0.07629766
 AB4742  -------------------------------------------------------------------
 AB4742  Click here for local accuracies and other accuracy information.
 AB4742
 AB4742.The horizontal coordinates were established by GPS observations
 AB4742.and adjusted by the National Geodetic Survey in June 2012.
 AB4742
 AB4742.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4742.been affixed to the stable North American tectonic plate. See 
 AB4742.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4742
 AB4742.The horizontal coordinates are valid at the epoch date displayed above
 AB4742.which is a decimal equivalence of Year/Month/Day.
 AB4742
 AB4742.The orthometric height was determined by GPS observations and a
 AB4742.high-resolution geoid model.
 AB4742
 AB4742.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4742.GEOID18 height accuracy estimate available here.
 AB4742
 AB4742.Click photographs - Photos may exist for this station.
 AB4742
 AB4742.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4742
 AB4742.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4742
 AB4742.The ellipsoidal height was determined by GPS observations
 AB4742.and is referenced to NAD 83.
 AB4742
 AB4742. The following values were computed from the NAD 83(2011) position.
 AB4742
 AB4742;                    North         East     Units Scale Factor Converg.
 AB4742;SPC MD       -   198,966.264   399,844.792   MT  1.00000159   -0 00 04.1
 AB4742;SPC MD       -   652,775.15  1,311,824.12   sFT  1.00000159   -0 00 04.1
 AB4742;UTM  18      - 4,369,630.134   327,779.104   MT  0.99996519   -1 16 21.0
 AB4742
 AB4742!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4742!SPC MD       -   0.99996794  x   1.00000159  =   0.99996953
 AB4742!UTM  18      -   0.99996794  x   0.99996519  =   0.99993313
 AB4742
 AB4742:                Primary Azimuth Mark                     Grid Az
 AB4742:SPC MD       -  BARTHOLOW AZ MK                          165 01 06.1
 AB4742:UTM  18      -  BARTHOLOW AZ MK                          166 17 23.0
 AB4742
 AB4742_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2777969630(NAD 83)
 AB4742
 AB4742|---------------------------------------------------------------------|
 AB4742| PID    Reference Object                     Distance      Geod. Az  |
 AB4742|                                                           dddmmss.s |
 AB4742| AB4763 BARTHOLOW AZ MK                     APPROX. 0.8 KM 1650102.0 |
 AB4742|---------------------------------------------------------------------|
 AB4742
 AB4742                          SUPERSEDED SURVEY CONTROL
 AB4742
 AB4742  NAD 83(2007)-  39 27 32.51003(N)    077 00 06.49300(W) AD(2002.00) 0
 AB4742  ELLIP H (02/10/07)  204.357  (m)                       GP(2002.00)    
 AB4742  ELLIP H (08/30/02)  204.365  (m)                       GP(       ) 4 2
 AB4742  NAD 83(1991)-  39 27 32.50999(N)    077 00 06.49320(W) AD(       ) 1
 AB4742  ELLIP H (03/12/01)  204.261  (m)                       GP(       ) 3 1
 AB4742  NAD 83(1991)-  39 27 32.51005(N)    077 00 06.53392(W) AD(       ) 1
 AB4742  ELLIP H (07/03/96)  205.571  (m)                       GP(       ) 1 1
 AB4742  NAVD 88 (03/12/01)  236.3    (m)  UNKNOWN  model used  GPS OBS        
 AB4742  NAVD 88 (07/03/96)  237.6    (m)  GEOID93  model used  GPS OBS        
 AB4742
 AB4742.Superseded values are not recommended for survey control.
 AB4742
 AB4742.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4742.See file dsdata.pdf to determine how the superseded data were derived.
 AB4742
 AB4742_MARKER: DD = SURVEY DISK
 AB4742_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4742_STAMPING: BARTHOLOW 1986
 AB4742_MARK LOGO: MD-013
 AB4742_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4742_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4742+STABILITY: SURFACE MOTION
 AB4742_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4742+SATELLITE: SATELLITE OBSERVATIONS - 1986
 AB4742
 AB4742  HISTORY     - Date     Condition        Report By
 AB4742  HISTORY     - 1986     MONUMENTED       MD-013
 AB4742
 AB4742                          STATION DESCRIPTION
 AB4742
 AB4742'DESCRIBED BY CARROLL COUNTY MARYLAND 1986
 AB4742'THE STATION IS LOCATED ABOUT 8 MI (12.9 KM) SOUTH OF WESTMINSTER AND
 AB4742'ABOUT 7 MI (11.3 KM) NORTH OF SYKESVILLE.
 AB4742'
 AB4742'TO REACH THE STATION FROM THE INTERSECTION OF MD ROUTE 97 (WASHINGTON
 AB4742'ROAD) AND MD ROUTE 26 (LIBERTY ROAD), GO NORTH ON MD ROUTE 97 FOR
 AB4742'ABOUT 1.9 MI (3.1 KM) TO THE INTERSECTION WITH BARTHOLOW ROAD.
 AB4742'CONTINUE ON MD ROUTE 97 FOR 0.1 MI (0.2 KM) TO THE STATION ON THE
 AB4742'RIGHT ON THE TOP OF A HIGH BANK NEAR THE EDGE OF A FIELD.
 AB4742'
 AB4742'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4742'MONUMENT SET FLUSH WITH THE GROUND.  IT IS 45.2 FT (13.8 M) NORTHEAST
 AB4742'OF THE CENTERLINE OF THE ROAD AND 96.2 FT (29.3 M) NORTH OF THE NORTH
 AB4742'END OF A GUARDRAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4763 ***********************************************************************
 AB4763  DESIGNATION -  BARTHOLOW AZ MK
 AB4763  PID         -  AB4763
 AB4763  STATE/COUNTY-  MD/CARROLL
 AB4763  COUNTRY     -  US
 AB4763  USGS QUAD   -  FINKSBURG (2016)
 AB4763
 AB4763                         *CURRENT SURVEY CONTROL
 AB4763  ______________________________________________________________________
 AB4763* NAD 83(2011) POSITION- 39 27 06.08067(N) 076 59 57.36872(W)   ADJUSTED
 AB4763* NAD 83(2011) ELLIP HT-   190.691 (meters)        (06/27/12)   ADJUSTED
 AB4763* NAD 83(2011) EPOCH   -  2010.00
 AB4763* NAVD 88 ORTHO HEIGHT -   222.7   (meters)      731.    (feet) GPS OBS
 AB4763  ______________________________________________________________________
 AB4763  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4763  GEOID HEIGHT    -        -31.991 (meters)                     GEOID99
 AB4763  GEOID HEIGHT    -        -31.983 (meters)                     GEOID18
 AB4763  NAD 83(2011) X  -  1,109,466.616 (meters)                     COMP
 AB4763  NAD 83(2011) Y  - -4,805,348.202 (meters)                     COMP
 AB4763  NAD 83(2011) Z  -  4,031,284.489 (meters)                     COMP
 AB4763  LAPLACE CORR    -         -0.27  (seconds)                    DEFLEC18
 AB4763
 AB4763  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4763  Standards:
 AB4763         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4763            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4763  -------------------------------------------------------------------
 AB4763  NETWORK    5.87  19.70           1.77   2.79  10.05      0.04798499
 AB4763  -------------------------------------------------------------------
 AB4763  Click here for local accuracies and other accuracy information.
 AB4763
 AB4763.The horizontal coordinates were established by GPS observations
 AB4763.and adjusted by the National Geodetic Survey in June 2012.
 AB4763
 AB4763.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4763.been affixed to the stable North American tectonic plate. See 
 AB4763.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4763
 AB4763.The horizontal coordinates are valid at the epoch date displayed above
 AB4763.which is a decimal equivalence of Year/Month/Day.
 AB4763
 AB4763.The orthometric height was determined by GPS observations and a
 AB4763.high-resolution geoid model.
 AB4763
 AB4763.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4763.GEOID18 height accuracy estimate available here.
 AB4763
 AB4763.Click photographs - Photos may exist for this station.
 AB4763
 AB4763.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4763
 AB4763.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4763
 AB4763.The ellipsoidal height was determined by GPS observations
 AB4763.and is referenced to NAD 83.
 AB4763
 AB4763. The following values were computed from the NAD 83(2011) position.
 AB4763
 AB4763;                    North         East     Units Scale Factor Converg.
 AB4763;SPC MD       -   198,151.186   400,062.912   MT  1.00000030   +0 00 01.7
 AB4763;SPC MD       -   650,101.02  1,312,539.74   sFT  1.00000030   +0 00 01.7
 AB4763;UTM  18      - 4,368,810.447   327,979.079   MT  0.99996434   -1 16 14.5
 AB4763
 AB4763!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4763!SPC MD       -   0.99997008  x   1.00000030  =   0.99997038
 AB4763!UTM  18      -   0.99997008  x   0.99996434  =   0.99993442
 AB4763
 AB4763:                Primary Azimuth Mark                     Grid Az
 AB4763:SPC MD       -  BARTHOLOW                                345 01 06.1
 AB4763:UTM  18      -  BARTHOLOW                                346 17 22.3
 AB4763
 AB4763_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2797968810(NAD 83)
 AB4763
 AB4763|---------------------------------------------------------------------|
 AB4763| PID    Reference Object                     Distance      Geod. Az  |
 AB4763|                                                           dddmmss.s |
 AB4763| AB4742 BARTHOLOW                           APPROX. 0.8 KM 3450107.8 |
 AB4763|---------------------------------------------------------------------|
 AB4763
 AB4763                          SUPERSEDED SURVEY CONTROL
 AB4763
 AB4763  NAD 83(2007)-  39 27 06.08090(N)    076 59 57.36949(W) AD(2002.00) 0
 AB4763  ELLIP H (02/10/07)  190.714  (m)                       GP(2002.00)    
 AB4763  ELLIP H (08/30/02)  190.721  (m)                       GP(       ) 4 2
 AB4763  NAD 83(1991)-  39 27 06.08084(N)    076 59 57.36968(W) AD(       ) 1
 AB4763  ELLIP H (03/12/01)  190.614  (m)                       GP(       ) 3 1
 AB4763  NAD 83(1991)-  39 27 06.07516(N)    076 59 57.40693(W) AD(       ) 1
 AB4763  ELLIP H (07/03/96)  191.680  (m)                       GP(       ) 1 1
 AB4763  NAVD 88 (03/12/01)  222.7    (m)  UNKNOWN  model used  GPS OBS        
 AB4763  NAVD 88 (07/03/96)  223.7    (m)  GEOID93  model used  GPS OBS        
 AB4763
 AB4763.Superseded values are not recommended for survey control.
 AB4763
 AB4763.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4763.See file dsdata.pdf to determine how the superseded data were derived.
 AB4763
 AB4763_MARKER: DD = SURVEY DISK
 AB4763_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4763_STAMPING: BARTHOLOW AZIMUTH 1995
 AB4763_MARK LOGO: MD-013
 AB4763_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4763_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4763+STABILITY: SURFACE MOTION
 AB4763_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4763+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4763
 AB4763  HISTORY     - Date     Condition        Report By
 AB4763  HISTORY     - 1995     MONUMENTED       MD-013
 AB4763
 AB4763                          STATION DESCRIPTION
 AB4763
 AB4763'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4763'STATION IS LOCATED ABOUT 8.5 MI (13.7 KM) SOUTH OF WESTMINSTER AND
 AB4763'ABOUT 6.0 MI (9.7 KM) NORTHWEST OF SYKESVILLE. TO REACH STATION FROM
 AB4763'THE INTERSECTION OF MD ROUTE 97 (WASHINGTON ROAD) AND MD ROUTE 26
 AB4763'(LIBERTY ROAD) GO NORTH ON MD ROUTE 97 FOR 1.5 MI (2.4 KM) TO THE
 AB4763'STATION ON THE LEFT. STATION IS ALSO 0.35 MI (0.56 KM) SOUTH OF THE
 AB4763'INTERSECTION OF MD ROUTE 97 AND BARTHOLOW ROAD. STATION MARK IS SET IN
 AB4763'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4763'GROUND. IT IS 28.6 FT (8.7 M) WEST OF THE CENTERLINE OF THE ROAD,
 AB4763'202.9 FT (61.8 M) SOUTH OF THE FIRST STEEL POST SUPPORTING A
 AB4763'GAURDRAIL, 3.1 FT (0.9 M) SOUTHWEST OF THE 33RD POST OF THE GUARDRAIL,
 AB4763'3.5 FT (1.1 M) NORTHWEST OF THE 34TH POST OF THE GUARDRAIL AND 2.4 FT
 AB4763'(0.7 M) WEST OF THE CENTERLINE OF THE GAURDRAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2395 ***********************************************************************
 JV2395  DESIGNATION -  BARTON
 JV2395  PID         -  JV2395
 JV2395  STATE/COUNTY-  MD/FREDERICK
 JV2395  COUNTRY     -  US
 JV2395  USGS QUAD   -  WALKERSVILLE (2016)
 JV2395
 JV2395                         *CURRENT SURVEY CONTROL
 JV2395  ______________________________________________________________________
 JV2395* NAD 83(1991) POSITION- 39 23 48.21617(N) 077 21 40.89585(W)   ADJUSTED
 JV2395* NAVD 88 ORTHO HEIGHT -   120.957 (meters)      396.84  (feet) ADJUSTED
 JV2395  ______________________________________________________________________
 JV2395  GEOID HEIGHT    -        -32.563 (meters)                     GEOID18
 JV2395  LAPLACE CORR    -          5.80  (seconds)                    DEFLEC18
 JV2395  DYNAMIC HEIGHT  -        120.892 (meters)      396.63  (feet) COMP
 JV2395  MODELED GRAVITY -    980,089.9   (mgal)                       NAVD 88
 JV2395
 JV2395  HORZ ORDER      -  SECOND
 JV2395  VERT ORDER      -  SECOND    CLASS 0
 JV2395
 JV2395.The horizontal coordinates were established by classical geodetic methods
 JV2395.and adjusted by the National Geodetic Survey in January 1992.
 JV2395
 JV2395.The orthometric height was determined by differential leveling and
 JV2395.adjusted by the NATIONAL GEODETIC SURVEY
 JV2395.in June 1991.
 JV2395
 JV2395.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2395.GEOID18 height accuracy estimate available here.
 JV2395
 JV2395.Click photographs - Photos may exist for this station.
 JV2395
 JV2395.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2395
 JV2395.The dynamic height is computed by dividing the NAVD 88
 JV2395.geopotential number by the normal gravity value computed on the
 JV2395.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2395.degrees latitude (g = 980.6199 gals.).
 JV2395
 JV2395.The modeled gravity was interpolated from observed gravity values.
 JV2395
 JV2395. The following values were computed from the NAD 83(1991) position.
 JV2395
 JV2395;                    North         East     Units Scale Factor Converg.
 JV2395;SPC MD       -   192,110.702   368,872.605   MT  0.99999111   -0 13 36.5
 JV2395;SPC MD       -   630,283.19  1,210,209.54   sFT  0.99999111   -0 13 36.5
 JV2395;UTM  18      - 4,363,463.541   296,661.159   MT  1.00010910   -1 29 57.2
 JV2395
 JV2395!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2395!SPC MD       -   0.99998613  x   0.99999111  =   0.99997724
 JV2395!UTM  18      -   0.99998613  x   1.00010910  =   1.00009523
 JV2395
 JV2395:                Primary Azimuth Mark                     Grid Az
 JV2395:SPC MD       -  FREDERICK MUNICIPAL TANK                 290 23 00.5
 JV2395:UTM  18      -  FREDERICK MUNICIPAL TANK                 291 39 21.2
 JV2395
 JV2395_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9666163463(NAD 83)
 JV2395
 JV2395|---------------------------------------------------------------------|
 JV2395| PID    Reference Object                     Distance      Geod. Az  |
 JV2395|                                                           dddmmss.s |
 JV2395| JV2396 BARTON RM 1                          10.897 METERS 13426     |
 JV2395| JV2394 BARTON RM 2                          15.088 METERS 25218     |
 JV2395| JV4598 FREDERICK MUNICIPAL TANK            APPROX. 4.3 KM 2900924.0 |
 JV2395|---------------------------------------------------------------------|
 JV2395
 JV2395                          SUPERSEDED SURVEY CONTROL
 JV2395
 JV2395  NAD 83(1986)-  39 23 48.21592(N)    077 21 40.90746(W) AD(       ) 2
 JV2395  NAD 27      -  39 23 47.84730(N)    077 21 41.96210(W) AD(       ) 2
 JV2395  NGVD 29             121.17   (m)          397.5    (f) LEVELING    3  
 JV2395  NGVD 29 (11/26/84)  121.173  (m)          397.55   (f) ADJUSTED    2 0
 JV2395
 JV2395.Superseded values are not recommended for survey control.
 JV2395
 JV2395.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2395.See file dsdata.pdf to determine how the superseded data were derived.
 JV2395
 JV2395_MARKER: DS = TRIANGULATION STATION DISK
 JV2395_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2395_STAMPING: BARTON 1958
 JV2395_MARK LOGO: CGS
 JV2395_PROJECTION: FLUSH
 JV2395_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2395+STABILITY: SURFACE MOTION
 JV2395_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2395+SATELLITE: SATELLITE OBSERVATIONS - April 03, 2020
 JV2395
 JV2395  HISTORY     - Date     Condition        Report By
 JV2395  HISTORY     - 1958     MONUMENTED       CGS
 JV2395  HISTORY     - 1958     GOOD             CGS
 JV2395  HISTORY     - 1975     GOOD             NGS
 JV2395  HISTORY     - 1983     GOOD             NGS
 JV2395  HISTORY     - 20070615 GOOD             MDSHA
 JV2395  HISTORY     - 20200403 GOOD             WSRR
 JV2395
 JV2395                          STATION DESCRIPTION
 JV2395
 JV2395'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2395'STATION IS LOCATED ALONG THE SOUTH SIDE OF U.S. HIGHWAY NO. 40,
 JV2395'ABOUT 3-1/2 MILES SOUTHEAST OF THE CENTER OF FREDERICK, ABOUT
 JV2395'5.0 MILES WEST OF NEW MARKET AND ABOUT 0.15 MILE NORTH OF THE
 JV2395'CENTER OF BARTONSVILLE.  STATION IS 66 PACES WEST OF APPROXIMATE
 JV2395'CENTERLINE OF BARTONSVILLE ROAD, 37 FEET NORTH OF APPROXIMATE
 JV2395'CENTERLINE OF SURFACED ROAD, 41 FEET SOUTH OF APPROXIMATE
 JV2395'CENTERLINE OF EAST BOUND TRAFFIC LANE OF U.S. HIGHWAY NO. 40
 JV2395'AND 12 FEET WEST-NORTHWEST OF UTILITY POLE.  THE MARK IS SET
 JV2395'FLUSH AND THE DISK IS STAMPED BARTON 1958.
 JV2395'
 JV2395'REFERENCE MARK NO. 1 IS 26 FEET SOUTH-SOUTHEAST OF UTILITY POLE
 JV2395'AND 14-1/2 FEET NORTH OF APPROXIMATE CENTERLINE OF SURFACED
 JV2395'ROAD.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED BARTON NO 1
 JV2395'1958.
 JV2395'
 JV2395'REFERENCE MARK NO. 2 IS 60-1/2 FEET WEST OF UTILITY POLE, 62 FEET
 JV2395'SOUTH OF EAST BOUND LANE OF U.S. HIGHWAY NO. 40 AND 19 FEET NORTH
 JV2395'OF APPROXIMATE CENTERLINE OF SURFACED ROAD.  THE MARK IS SET FLUSH
 JV2395'AND THE DISK IS STAMPED BARTON NO 2 1958.
 JV2395'
 JV2395'TO REACH FROM THE EAST END OF OVERPASS AT U.S. HIGHWAY NO. 40
 JV2395'BY-PASS AND U.S. HIGHWAY NO. 40 (EAST BOUND), GO EASTERLY ON
 JV2395'U.S. HIGHWAY NO. 40 FOR 1.4 MILE TO ESSO SERVICE STATION AND
 JV2395'STATION ON RIGHT SIDE OF HIGHWAY AS DESCRIBED.
 JV2395'
 JV2395'STATIONS PATRICK AND LONG ARE VG AND MAY BE USED AS AZIMUTH MARK.
 JV2395'
 JV2395'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV2395
 JV2395                          STATION RECOVERY (1958)
 JV2395
 JV2395'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2395'2.7 MI E FROM FREDERICK.
 JV2395'ABOUT 2.7 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2395'AT FREDERICK, ABOUT 0.3 MILE EAST OF THE LARGE BRIDGE OVER THE
 JV2395'MONOCACY RIVER, ABOUT 70 YARDS WEST OF THE CROSSING OF THE
 JV2395'BARTONSVILLE ROAD, 41.5 FEET SOUTH OF THE CENTER LINE OF THE
 JV2395'EAST BOUND LANE, 15 FEET WEST OF POWER LINE POLE NO. 1788,
 JV2395'ABOUT 100 FEET NORTHWEST OF AN ESSO SERVICE STATION, 1 FOOT
 JV2395'ABOVE THE LEVEL OF THE HIGHWAY AND SET IN THE TOP OF A CONCRETE
 JV2395'POST FLUSH WITH THE GROUND.
 JV2395
 JV2395                          STATION RECOVERY (1975)
 JV2395
 JV2395'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV2395'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV2395'CONDITION AS DESCRIBED IN THE 1958 DESCRIPTION.
 JV2395'
 JV2395'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV2395'3-1/2 MILES EAST OF FREDRICK.
 JV2395
 JV2395                          STATION RECOVERY (1983)
 JV2395
 JV2395'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (DRM)
 JV2395'STATION RM 1 AND RM 2 RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV2395'
 JV2395'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2.7 MILES
 JV2395'SOUTHEAST OF FREDERICK.
 JV2395
 JV2395                          STATION RECOVERY (2007)
 JV2395
 JV2395'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 JV2395'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 JV2395'U.S. HIGHWAY 40 IS NOW STATE HIGHWAY 144. ESSO SERVICE STATION IS
 JV2395'GONE. STATION IS IN A LARGE HEDGE ROW NOW. THE 1958 DESCRIPTION IS
 JV2395'ADEQUATE TO RECOVER STATION.
 JV2395
 JV2395                          STATION RECOVERY (2020)
 JV2395
 JV2395'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV2395'STATION, REFERENCE MARK 1 RECOVERED AS DESCRIBED.  REFERENCE MARK 2
 JV2395'SEARCHED FOR, NOT RECOVERED.  STATION IS IN OVERGROWN HEDGE ROW
 JV2395'BETWEEN MD 144 AND JUG BRIDGE HILL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2396 ***********************************************************************
 JV2396  DESIGNATION -  BARTON RM 1
 JV2396  PID         -  JV2396
 JV2396  STATE/COUNTY-  MD/FREDERICK
 JV2396  COUNTRY     -  US
 JV2396  USGS QUAD   -  WALKERSVILLE (2016)
 JV2396
 JV2396                         *CURRENT SURVEY CONTROL
 JV2396  ______________________________________________________________________
 JV2396* NAD 83(1986) POSITION- 39 23 47.97   (N) 077 21 40.57   (W)   HD_HELD1
 JV2396* NAVD 88 ORTHO HEIGHT -   121.445 (meters)      398.44  (feet) ADJUSTED
 JV2396  ______________________________________________________________________
 JV2396  GEOID HEIGHT    -        -32.562 (meters)                     GEOID18
 JV2396  DYNAMIC HEIGHT  -        121.380 (meters)      398.23  (feet) COMP
 JV2396  MODELED GRAVITY -    980,089.9   (mgal)                       NAVD 88
 JV2396
 JV2396  VERT ORDER      -  SECOND    CLASS 0
 JV2396
 JV2396.The horizontal coordinates were determined by differentially corrected
 JV2396.hand held GPS observations or other comparable positioning techniques
 JV2396.and have an estimated accuracy of +/- 3 meters.
 JV2396
 JV2396.The orthometric height was determined by differential leveling and
 JV2396.adjusted by the NATIONAL GEODETIC SURVEY
 JV2396.in June 1991.
 JV2396
 JV2396.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2396.GEOID18 height accuracy estimate available here.
 JV2396
 JV2396.Click photographs - Photos may exist for this station.
 JV2396
 JV2396.The dynamic height is computed by dividing the NAVD 88
 JV2396.geopotential number by the normal gravity value computed on the
 JV2396.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2396.degrees latitude (g = 980.6199 gals.).
 JV2396
 JV2396.The modeled gravity was interpolated from observed gravity values.
 JV2396
 JV2396;                    North         East    Units  Estimated Accuracy
 JV2396;SPC MD       -   192,103.1     368,880.4     MT  (+/- 3 meters HH1 GPS) 
 JV2396
 JV2396_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9666863455(NAD 83)
 JV2396
 JV2396                          SUPERSEDED SURVEY CONTROL
 JV2396
 JV2396  NGVD 29 (11/26/84)  121.662  (m)          399.15   (f) ADJUSTED    2 0
 JV2396
 JV2396.Superseded values are not recommended for survey control.
 JV2396
 JV2396.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2396.See file dsdata.pdf to determine how the superseded data were derived.
 JV2396
 JV2396_MARKER: DR = REFERENCE MARK DISK
 JV2396_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2396_STAMPING: BARTON NO 1 1958
 JV2396_MARK LOGO: CGS
 JV2396_PROJECTION: FLUSH
 JV2396_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2396+STABILITY: SURFACE MOTION
 JV2396_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2396+SATELLITE: SATELLITE OBSERVATIONS - April 03, 2020
 JV2396
 JV2396  HISTORY     - Date     Condition        Report By
 JV2396  HISTORY     - 1958     MONUMENTED       CGS
 JV2396  HISTORY     - 20200403 GOOD             WSRR
 JV2396
 JV2396                          STATION DESCRIPTION
 JV2396
 JV2396'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2396'2.7 MI E FROM FREDERICK.
 JV2396'ABOUT 2.7 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2396'AT FREDERICK, 35.7 FEET SOUTHEAST OF THE STATION, 14 1/2 FEET
 JV2396'NORTH OF THE CENTER LINE OF A BLACK TOP ROAD, SET IN THE TOP
 JV2396'OF A CONCRETE POST FLUSH WITH THE GROUND AND ABOUT LEVEL WITH
 JV2396'THE HIGHWAY.
 JV2396
 JV2396                          STATION RECOVERY (2020)
 JV2396
 JV2396'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV2396'THE MARK IS BETWEEN MD 144 AND JUG BRIDGE HILL RD., SE OF THICK HEDGE
 JV2396'ROW.  GROWTH IS THICK ENOUGH TO BLOCK VIEW TO MARK WITHOUT BEING
 JV2396'CLEARED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2394 ***********************************************************************
 JV2394  DESIGNATION -  BARTON RM 2
 JV2394  PID         -  JV2394
 JV2394  STATE/COUNTY-  MD/FREDERICK
 JV2394  COUNTRY     -  US
 JV2394  USGS QUAD   -  WALKERSVILLE (2016)
 JV2394
 JV2394                         *CURRENT SURVEY CONTROL
 JV2394  ______________________________________________________________________
 JV2394* NAD 83(1986) POSITION- 39 23 48.07   (N) 077 21 41.50   (W)   HD_HELD1
 JV2394* NAVD 88 ORTHO HEIGHT -   120.401 (meters)      395.02  (feet) ADJUSTED
 JV2394  ______________________________________________________________________
 JV2394  GEOID HEIGHT    -        -32.563 (meters)                     GEOID18
 JV2394  DYNAMIC HEIGHT  -        120.337 (meters)      394.81  (feet) COMP
 JV2394  MODELED GRAVITY -    980,089.9   (mgal)                       NAVD 88
 JV2394
 JV2394  VERT ORDER      -  SECOND    CLASS 0
 JV2394
 JV2394.The horizontal coordinates were determined by differentially corrected
 JV2394.hand held GPS observations or other comparable positioning techniques
 JV2394.and have an estimated accuracy of +/- 3 meters.
 JV2394
 JV2394.The orthometric height was determined by differential leveling and
 JV2394.adjusted by the NATIONAL GEODETIC SURVEY
 JV2394.in June 1991.
 JV2394
 JV2394.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2394.GEOID18 height accuracy estimate available here.
 JV2394
 JV2394.Click photographs - Photos may exist for this station.
 JV2394
 JV2394.The dynamic height is computed by dividing the NAVD 88
 JV2394.geopotential number by the normal gravity value computed on the
 JV2394.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2394.degrees latitude (g = 980.6199 gals.).
 JV2394
 JV2394.The modeled gravity was interpolated from observed gravity values.
 JV2394
 JV2394;                    North         East    Units  Estimated Accuracy
 JV2394;SPC MD       -   192,106.3     368,858.1     MT  (+/- 3 meters HH1 GPS) 
 JV2394
 JV2394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9664663459(NAD 83)
 JV2394
 JV2394                          SUPERSEDED SURVEY CONTROL
 JV2394
 JV2394  NGVD 29 (11/26/84)  120.617  (m)          395.72   (f) ADJUSTED    2 0
 JV2394
 JV2394.Superseded values are not recommended for survey control.
 JV2394
 JV2394.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2394.See file dsdata.pdf to determine how the superseded data were derived.
 JV2394
 JV2394_MARKER: DR = REFERENCE MARK DISK
 JV2394_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2394_STAMPING: BARTON NO 2 1958
 JV2394_MARK LOGO: CGS
 JV2394_PROJECTION: FLUSH
 JV2394_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2394+STABILITY: SURFACE MOTION
 JV2394
 JV2394  HISTORY     - Date     Condition        Report By
 JV2394  HISTORY     - 1958     MONUMENTED       CGS
 JV2394
 JV2394                          STATION DESCRIPTION
 JV2394
 JV2394'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2394'2.7 MI E FROM FREDERICK.
 JV2394'ABOUT 2.7 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2394'AT FREDERICK, 49.5 FEET SOUTHWEST OF THE STATION, 18 1/2 FEET
 JV2394'NORTH OF THE CENTER LINE OF A BLACK TOP ROAD, SET IN THE TOP
 JV2394'OF A CONCRETE POST FLUSH WITH THE GROUND AND ABOUT LEVEL WITH
 JV2394'THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6994 ***********************************************************************
 HV6994  DESIGNATION -  BASE
 HV6994  PID         -  HV6994
 HV6994  STATE/COUNTY-  MD/ST MARYS
 HV6994  COUNTRY     -  US
 HV6994  USGS QUAD   -  SAINT CLEMENTS ISLAND (2016)
 HV6994
 HV6994                         *CURRENT SURVEY CONTROL
 HV6994  ______________________________________________________________________
 HV6994* NAD 83(1993) POSITION- 38 13 32.78196(N) 076 45 00.18127(W)   ADJUSTED
 HV6994* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6994  ______________________________________________________________________
 HV6994  GEOID HEIGHT    -        -33.740 (meters)                     GEOID18
 HV6994  LAPLACE CORR    -         -2.32  (seconds)                    DEFLEC18
 HV6994  HORZ ORDER      -  SECOND
 HV6994
 HV6994.The horizontal coordinates were established by classical geodetic methods
 HV6994.and adjusted by the National Geodetic Survey in November 1994.
 HV6994
 HV6994.The orthometric height was scaled from a topographic map.
 HV6994
 HV6994.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6994.GEOID18 height accuracy estimate available here.
 HV6994
 HV6994.Click photographs - Photos may exist for this station.
 HV6994
 HV6994.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6994
 HV6994. The following values were computed from the NAD 83(1993) position.
 HV6994
 HV6994;                    North         East     Units Scale Factor Converg.
 HV6994;SPC MD       -    62,093.431   421,886.489   MT  1.00001374   +0 09 24.8
 HV6994;SPC MD       -   203,718.20  1,384,139.26   sFT  1.00001374   +0 09 24.8
 HV6994;SPC VA N     - 2,063,519.860 3,653,216.337   MT  0.99997161   +1 05 31.8
 HV6994;SPC VA N     - 6,770,064.74 11,985,593.93   sFT  0.99997161   +1 05 31.8
 HV6994;UTM  18      - 4,232,313.259   346,816.873   MT  0.99988899   -1 04 59.1
 HV6994
 HV6994!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6994!SPC MD       -   1.00000534  x   1.00001374  =   1.00001908
 HV6994!SPC VA N     -   1.00000534  x   0.99997161  =   0.99997695
 HV6994!UTM  18      -   1.00000534  x   0.99988899  =   0.99989433
 HV6994
 HV6994:                Primary Azimuth Mark                     Grid Az
 HV6994:SPC MD       -  MARTIN 1918                              160 20 02.3
 HV6994:SPC VA N     -  MARTIN 1918                              159 23 55.3
 HV6994:UTM  18      -  MARTIN 1918                              161 34 26.2
 HV6994
 HV6994_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4681632313(NAD 83)
 HV6994
 HV6994|---------------------------------------------------------------------|
 HV6994| PID    Reference Object                     Distance      Geod. Az  |
 HV6994|                                                           dddmmss.s |
 HV6994| HV6946 MARTIN 1918                         APPROX. 1.8 KM 1602927.1 |
 HV6994|---------------------------------------------------------------------|
 HV6994
 HV6994                          SUPERSEDED SURVEY CONTROL
 HV6994
 HV6994  NAD 83(1991)-  38 13 32.78055(N)    076 45 00.18603(W) AD(       ) 2
 HV6994  NAD 83(1986)-  38 13 32.78164(N)    076 45 00.19729(W) AD(       ) 2
 HV6994  NAD 27      -  38 13 32.31300(N)    076 45 01.31400(W) AD(       ) 2
 HV6994  USSD        -  38 13 32.89600(N)    076 45 01.29900(W) AD(       ) 3
 HV6994
 HV6994.Superseded values are not recommended for survey control.
 HV6994
 HV6994.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6994.See file dsdata.pdf to determine how the superseded data were derived.
 HV6994
 HV6994
 HV6994  HISTORY     - Date     Condition        Report By
 HV6994  HISTORY     - 1918     MONUMENTED       USN
 HV6994  HISTORY     - 1958     GOOD             CGS
 HV6994
 HV6994                          STATION DESCRIPTION
 HV6994
 HV6994'DESCRIBED BY US NAVY 1918
 HV6994'STATION IS ON COLTONS POINT.  NOT PERMANENTLY MARKED.
 HV6994
 HV6994                          STATION RECOVERY (1958)
 HV6994
 HV6994'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6994'THE STATION WAS NOT PERMANENTLY MARKED AND SHOULD BE LISTED AS NOT
 HV6994'RECOVERABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8507 ***********************************************************************
 AI8507  DESIGNATION -  BASE 2
 AI8507  PID         -  AI8507
 AI8507  STATE/COUNTY-  MD/HOWARD
 AI8507  COUNTRY     -  US
 AI8507  USGS QUAD   -  SAVAGE (2016)
 AI8507
 AI8507                         *CURRENT SURVEY CONTROL
 AI8507  ______________________________________________________________________
 AI8507* NAD 83(2011) POSITION- 39 11 38.06055(N) 076 46 48.44737(W)   ADJUSTED
 AI8507* NAD 83(2011) ELLIP HT-    44.931 (meters)        (06/27/12)   ADJUSTED
 AI8507* NAD 83(2011) EPOCH   -  2010.00
 AI8507* NAVD 88 ORTHO HEIGHT -    77.3   (meters)      254.    (feet) GPS OBS
 AI8507  ______________________________________________________________________
 AI8507  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8507  GEOID HEIGHT    -        -32.336 (meters)                     GEOID99
 AI8507  GEOID HEIGHT    -        -32.354 (meters)                     GEOID18
 AI8507  NAD 83(2011) X  -  1,131,959.700 (meters)                     COMP
 AI8507  NAD 83(2011) Y  - -4,818,615.389 (meters)                     COMP
 AI8507  NAD 83(2011) Z  -  4,009,052.000 (meters)                     COMP
 AI8507  LAPLACE CORR    -         -5.22  (seconds)                    DEFLEC18
 AI8507
 AI8507  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8507  Standards:
 AI8507         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8507            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8507  -------------------------------------------------------------------
 AI8507  NETWORK    0.89   1.10           0.40   0.32   0.56     -0.03952899
 AI8507  -------------------------------------------------------------------
 AI8507  Click here for local accuracies and other accuracy information.
 AI8507
 AI8507.The horizontal coordinates were established by GPS observations
 AI8507.and adjusted by the National Geodetic Survey in June 2012.
 AI8507
 AI8507.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8507.been affixed to the stable North American tectonic plate. See 
 AI8507.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8507
 AI8507.The horizontal coordinates are valid at the epoch date displayed above
 AI8507.which is a decimal equivalence of Year/Month/Day.
 AI8507
 AI8507.The orthometric height was determined by GPS observations and a
 AI8507.high-resolution geoid model.
 AI8507
 AI8507.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8507.GEOID18 height accuracy estimate available here.
 AI8507
 AI8507.Click photographs - Photos may exist for this station.
 AI8507
 AI8507.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8507
 AI8507.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8507
 AI8507.The ellipsoidal height was determined by GPS observations
 AI8507.and is referenced to NAD 83.
 AI8507
 AI8507. The following values were computed from the NAD 83(2011) position.
 AI8507
 AI8507;                    North         East     Units Scale Factor Converg.
 AI8507;SPC MD       -   169,555.068   418,994.268   MT  0.99996522   +0 08 16.8
 AI8507;SPC MD       -   556,281.92  1,374,650.36   sFT  0.99996522   +0 08 16.8
 AI8507;UTM  18      - 4,339,804.277   346,272.495   MT  0.99989099   -1 07 30.6
 AI8507
 AI8507!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8507!SPC MD       -   0.99999295  x   0.99996522  =   0.99995817
 AI8507!UTM  18      -   0.99999295  x   0.99989099  =   0.99988394
 AI8507
 AI8507_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4627239804(NAD 83)
 AI8507
 AI8507                          SUPERSEDED SURVEY CONTROL
 AI8507
 AI8507  NAD 83(2007)-  39 11 38.06085(N)    076 46 48.44843(W) AD(2002.00) 0
 AI8507  ELLIP H (02/10/07)   44.954  (m)                       GP(2002.00)    
 AI8507  ELLIP H (08/30/02)   44.950  (m)                       GP(       ) 4 2
 AI8507  NAD 83(1991)-  39 11 38.06062(N)    076 46 48.44817(W) AD(       ) 1
 AI8507  ELLIP H (11/16/00)   44.887  (m)                       GP(       ) 4 1
 AI8507
 AI8507.Superseded values are not recommended for survey control.
 AI8507
 AI8507.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8507.See file dsdata.pdf to determine how the superseded data were derived.
 AI8507
 AI8507_MARKER: DD = SURVEY DISK
 AI8507_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8507_STAMPING: BASE 2 3/15/95
 AI8507_MARK LOGO: MD-027
 AI8507_PROJECTION: FLUSH
 AI8507_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8507_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8507+STABILITY: SURFACE MOTION
 AI8507_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8507+SATELLITE: SATELLITE OBSERVATIONS - April 24, 2015
 AI8507
 AI8507  HISTORY     - Date     Condition        Report By
 AI8507  HISTORY     - 1995     MONUMENTED       MD-027
 AI8507  HISTORY     - 20000915 GOOD             MD-027
 AI8507  HISTORY     - 20040325 GOOD             URS
 AI8507  HISTORY     - 20150424 GOOD             BASE9
 AI8507
 AI8507                          STATION DESCRIPTION
 AI8507
 AI8507'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8507'DESCRIPTION BT HOWARD COUNTY 2000    THE STATION IS IN THE LOCALITY
 AI8507'OF WATERLOO IN THE PARKING LOT OF  THE HOWARD COUNTY REPAIR
 AI8507'SHOP  AT MAYFIELD. TO REACH THE STATION  FROM THE INTERSECTION OF
 AI8507'MARYLAND ROUTE 175 AND MARYLAND ROUTE  108  GO 1 MILE NORTH
 AI8507'ALONG ROUTE 108  TO MAYFIELD AVENUE,  TURN  RIGHT (EAST) ON
 AI8507'MAYFIELD AVENUE AND GO 0.8 MILES TO THE HOWARD  COUNTY REPAIR
 AI8507'SHOP ON THE RIGHT.   THE STATION IS ON THE ISLAND THAT SEPARATES
 AI8507'THE MAIN PARKING LOT  FROM THE GAS PUMPS AREA.  THE STATION IS A
 AI8507'STANDARD  HOWARD COUNTY SURVEY DISC SET ON A  CONCRETE BASE.  A
 AI8507'PERMANENT  METALIC TRIPOD WAS BUILT OVER THE  MARK  IN ORDER TO
 AI8507'ALLOW ITS USE AS AN UNMANNED RTK BASE STATION.
 AI8507'
 AI8507
 AI8507                          STATION RECOVERY (2004)
 AI8507
 AI8507'RECOVERY NOTE BY URS COMPANY 2004
 AI8507'RECOVERED IN GOOD CONDITION.
 AI8507
 AI8507                          STATION RECOVERY (2015)
 AI8507
 AI8507'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2015 (DRD)
 AI8507'THE METAL TRIPOD HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8506 ***********************************************************************
 AI8506  CBN         -  This is a Cooperative Base Network Control Station.
 AI8506  DESIGNATION -  BASE 8
 AI8506  PID         -  AI8506
 AI8506  STATE/COUNTY-  MD/HOWARD
 AI8506  COUNTRY     -  US
 AI8506  USGS QUAD   -  CLARKSVILLE (2016)
 AI8506
 AI8506                         *CURRENT SURVEY CONTROL
 AI8506  ______________________________________________________________________
 AI8506* NAD 83(2011) POSITION- 39 08 47.76671(N) 076 54 07.82254(W)   ADJUSTED
 AI8506* NAD 83(2011) ELLIP HT-   100.657 (meters)        (06/27/12)   ADJUSTED
 AI8506* NAD 83(2011) EPOCH   -  2010.00
 AI8506* NAVD 88 ORTHO HEIGHT -   132.8   (meters)      436.    (feet) GPS OBS
 AI8506  ______________________________________________________________________
 AI8506  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8506  GEOID HEIGHT    -        -32.096 (meters)                     GEOID99
 AI8506  GEOID HEIGHT    -        -32.116 (meters)                     GEOID18
 AI8506  NAD 83(2011) X  -  1,122,454.254 (meters)                     COMP
 AI8506  NAD 83(2011) Y  - -4,824,288.581 (meters)                     COMP
 AI8506  NAD 83(2011) Z  -  4,005,015.720 (meters)                     COMP
 AI8506  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 AI8506
 AI8506  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8506  Standards:
 AI8506         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8506            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8506  -------------------------------------------------------------------
 AI8506  NETWORK    0.52   0.96           0.23   0.19   0.49     -0.04512171
 AI8506  -------------------------------------------------------------------
 AI8506  Click here for local accuracies and other accuracy information.
 AI8506
 AI8506.The horizontal coordinates were established by GPS observations
 AI8506.and adjusted by the National Geodetic Survey in June 2012.
 AI8506
 AI8506.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8506.been affixed to the stable North American tectonic plate. See 
 AI8506.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8506
 AI8506.The horizontal coordinates are valid at the epoch date displayed above
 AI8506.which is a decimal equivalence of Year/Month/Day.
 AI8506
 AI8506.The orthometric height was determined by GPS observations and a
 AI8506.high-resolution geoid model.
 AI8506
 AI8506.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8506.GEOID18 height accuracy estimate available here.
 AI8506
 AI8506.Click photographs - Photos may exist for this station.
 AI8506
 AI8506.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8506
 AI8506.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8506
 AI8506.The ellipsoidal height was determined by GPS observations
 AI8506.and is referenced to NAD 83.
 AI8506
 AI8506. The following values were computed from the NAD 83(2011) position.
 AI8506
 AI8506;                    North         East     Units Scale Factor Converg.
 AI8506;SPC MD       -   164,285.305   408,456.560   MT  0.99996099   +0 03 41.0
 AI8506;SPC MD       -   538,992.70  1,340,077.90   sFT  0.99996099   +0 03 41.0
 AI8506;UTM  18      - 4,334,768.297   335,621.754   MT  0.99993271   -1 12 04.0
 AI8506
 AI8506!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8506!SPC MD       -   0.99998421  x   0.99996099  =   0.99994520
 AI8506!UTM  18      -   0.99998421  x   0.99993271  =   0.99991692
 AI8506
 AI8506_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3562134768(NAD 83)
 AI8506
 AI8506                          SUPERSEDED SURVEY CONTROL
 AI8506
 AI8506  NAD 83(2007)-  39 08 47.76692(N)    076 54 07.82335(W) AD(2002.00) 0
 AI8506  ELLIP H (02/10/07)  100.680  (m)                       GP(2002.00)    
 AI8506  NAD 83(1991)-  39 08 47.76701(N)    076 54 07.82342(W) AD(       ) A
 AI8506  ELLIP H (02/12/02)  100.665  (m)                       GP(       ) 4 1
 AI8506  NAD 83(1991)-  39 08 47.76719(N)    076 54 07.82295(W) AD(       ) 1
 AI8506  ELLIP H (11/16/00)  100.594  (m)                       GP(       ) 4 1
 AI8506
 AI8506.Superseded values are not recommended for survey control.
 AI8506
 AI8506.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8506.See file dsdata.pdf to determine how the superseded data were derived.
 AI8506
 AI8506_MARKER: DD = SURVEY DISK
 AI8506_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8506_STAMPING: BAS8 8 96
 AI8506_MARK LOGO: MD-027
 AI8506_PROJECTION: FLUSH
 AI8506_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI8506_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8506+STABILITY: SURFACE MOTION
 AI8506_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8506+SATELLITE: SATELLITE OBSERVATIONS - December 26, 2005
 AI8506
 AI8506  HISTORY     - Date     Condition        Report By
 AI8506  HISTORY     - 1996     MONUMENTED       MD-027
 AI8506  HISTORY     - 20000224 GOOD             NGS
 AI8506  HISTORY     - 20000915 GOOD             MD-027
 AI8506  HISTORY     - 20030619 GOOD             GEOCAC
 AI8506  HISTORY     - 20051226 GOOD             GPSSS
 AI8506
 AI8506                          STATION DESCRIPTION
 AI8506
 AI8506'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 AI8506'STATION IS LOCATED IN SCAGGSVILLE MARYLAND (HOWARD COUNTY) JUST WEST
 AI8506'OF US HIGHWAY 29.  SITE IS ABOUT 4.2 MI (6.8 KM) NORTHWEST OF LAUREL
 AI8506'MARYLAND AND ABOUT 5.4 MI (8.7 KM) SOUTH SOUTHWEST OF COLUMBIA
 AI8506'MARYLAND.  TO REACH FROM THE INTERSECTION OF US HIGHWAY 29 AND STATE
 AI8506'ROUTE 198 DRIVE NORTH ON US HIGHWAY 29 FOR ABOUT 3 MI (4.8 KM) TO THE
 AI8506'STATION ON THE LEFT (WEST) IN THE PARKING LOT FOR THE SCAGGSVILLE FIRE
 AI8506'STATION.  TO REACH FROM THE INTERSECTION OF US HIGHWAY 29 AND US
 AI8506'HIGHWAY 32 DRIVE SOUTH ON US HIGHWAY 32 FOR ABOUT 3 MI (4.8 KM) TO THE
 AI8506'STATION ON THE RIGHT (WEST) .  STATION IS LOCATED NEAR THE CENTER OF A
 AI8506'GRASS ISLAND IN THE PARKING LOT JUST WEST OF THE ENTRANCE TO THE
 AI8506'SCAGGSVILLE FIRE STATION.  STATION IS A HOWARD COUNTY GEODETIC SURVEY
 AI8506'DISK SET IN THE TOP OF A CIRCULAR CONCRETE MONUMENT PROTRUDING ABOUT 6
 AI8506'INCHES ABOVE THE SURFACE.  A PERMANENT METAL STAND HAS BEEN PLACED
 AI8506'OVER THE POINT.  USERS NEED TO PROVIDE THEIR OWN TRIBRACH AND ADAPTER
 AI8506'TO ATTACH THE TRIBRACH TO THE STAND.
 AI8506
 AI8506                          STATION RECOVERY (2000)
 AI8506
 AI8506'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8506'DESCRIPTION BY HOWARD COUNTY 2000    THE STATION IS IN THE LOCALITY
 AI8506'OF SCAGGSVILLE IN THE PARKING LOT  GROUNDS OF THE  FIRE AND POLICE
 AI8506'STATIONS.   TO  REACH THE STATION FROM THE INTERSECTION OF
 AI8506'MARYLAND ROUTE  29 AND MARILAND ROUTE 216 GO ABOUT 200 FEET WEST
 AI8506'ALONG ROUTE 216  TO THE ENTRANCE TO  THE FIRE STATION PARKING LOT.
 AI8506'THE STATION IS ON THE WESTERNMOST ISLAND  OF SAID PARKING LOT, IN
 AI8506'FRONT OF THE FIRE STATION.   THE MARK IS A STANDARD HOWARD
 AI8506'COUNTY  DISC  SET ON CONCRETE  BASE, FLUSH WITH THE GROUND.  A
 AI8506'PERMANENT  METALIC TRIPOD WAS  BUILT OVER  THE STATION IN ORDER
 AI8506'TO ALLOW ITS  USE AS  AN UNMANNED  RTK BASE STATION.
 AI8506'
 AI8506
 AI8506                          STATION RECOVERY (2003)
 AI8506
 AI8506'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 AI8506'RECOVERED IN GOOD CONDITION.
 AI8506
 AI8506                          STATION RECOVERY (2005)
 AI8506
 AI8506'RECOVERY NOTE BY GPS SALES AND SERVICES 2005 (CJC)
 AI8506'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8513 ***********************************************************************
 AI8513  DESIGNATION -  BASE A
 AI8513  PID         -  AI8513
 AI8513  STATE/COUNTY-  MD/HOWARD
 AI8513  COUNTRY     -  US
 AI8513  USGS QUAD   -  SYKESVILLE (2016)
 AI8513
 AI8513                         *CURRENT SURVEY CONTROL
 AI8513  ______________________________________________________________________
 AI8513* NAD 83(2011) POSITION- 39 18 32.56936(N) 076 54 48.18698(W)   ADJUSTED
 AI8513* NAD 83(2011) ELLIP HT-   140.116 (meters)        (06/27/12)   ADJUSTED
 AI8513* NAD 83(2011) EPOCH   -  2010.00
 AI8513* NAVD 88 ORTHO HEIGHT -   172.1   (meters)      565.    (feet) GPS OBS
 AI8513  ______________________________________________________________________
 AI8513  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8513  GEOID HEIGHT    -        -32.001 (meters)                     GEOID99
 AI8513  GEOID HEIGHT    -        -32.017 (meters)                     GEOID18
 AI8513  NAD 83(2011) X  -  1,118,934.620 (meters)                     COMP
 AI8513  NAD 83(2011) Y  - -4,813,428.711 (meters)                     COMP
 AI8513  NAD 83(2011) Z  -  4,019,011.239 (meters)                     COMP
 AI8513  LAPLACE CORR    -         -3.52  (seconds)                    DEFLEC18
 AI8513
 AI8513  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8513  Standards:
 AI8513         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8513            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8513  -------------------------------------------------------------------
 AI8513  NETWORK    0.92   1.16           0.41   0.33   0.59     -0.04192204
 AI8513  -------------------------------------------------------------------
 AI8513  Click here for local accuracies and other accuracy information.
 AI8513
 AI8513.The horizontal coordinates were established by GPS observations
 AI8513.and adjusted by the National Geodetic Survey in June 2012.
 AI8513
 AI8513.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8513.been affixed to the stable North American tectonic plate. See 
 AI8513.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8513
 AI8513.The horizontal coordinates are valid at the epoch date displayed above
 AI8513.which is a decimal equivalence of Year/Month/Day.
 AI8513
 AI8513.The orthometric height was determined by GPS observations and a
 AI8513.high-resolution geoid model.
 AI8513
 AI8513.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8513.GEOID18 height accuracy estimate available here.
 AI8513
 AI8513.Click photographs - Photos may exist for this station.
 AI8513
 AI8513.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8513
 AI8513.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8513
 AI8513.The ellipsoidal height was determined by GPS observations
 AI8513.and is referenced to NAD 83.
 AI8513
 AI8513. The following values were computed from the NAD 83(2011) position.
 AI8513
 AI8513;                    North         East     Units Scale Factor Converg.
 AI8513;SPC MD       -   182,318.396   407,470.210   MT  0.99997838   +0 03 15.7
 AI8513;SPC MD       -   598,156.27  1,336,841.85   sFT  0.99997838   +0 03 15.7
 AI8513;UTM  18      - 4,352,818.130   335,033.662   MT  0.99993508   -1 12 44.7
 AI8513
 AI8513!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8513!SPC MD       -   0.99997802  x   0.99997838  =   0.99995640
 AI8513!UTM  18      -   0.99997802  x   0.99993508  =   0.99991310
 AI8513
 AI8513_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3503352818(NAD 83)
 AI8513
 AI8513                          SUPERSEDED SURVEY CONTROL
 AI8513
 AI8513  NAD 83(2007)-  39 18 32.56946(N)    076 54 48.18777(W) AD(2002.00) 0
 AI8513  ELLIP H (02/10/07)  140.146  (m)                       GP(2002.00)    
 AI8513  ELLIP H (08/30/02)  140.148  (m)                       GP(       ) 4 2
 AI8513  NAD 83(1991)-  39 18 32.56898(N)    076 54 48.18773(W) AD(       ) 1
 AI8513  ELLIP H (11/16/00)  140.071  (m)                       GP(       ) 4 1
 AI8513
 AI8513.Superseded values are not recommended for survey control.
 AI8513
 AI8513.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8513.See file dsdata.pdf to determine how the superseded data were derived.
 AI8513
 AI8513_MARKER: DD = SURVEY DISK
 AI8513_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8513_STAMPING: BASE A
 AI8513_MARK LOGO: MD-027
 AI8513_PROJECTION: FLUSH
 AI8513_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8513_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8513+STABILITY: SURFACE MOTION
 AI8513_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8513+SATELLITE: SATELLITE OBSERVATIONS - September 07, 2002
 AI8513
 AI8513  HISTORY     - Date     Condition        Report By
 AI8513  HISTORY     - 2000     MONUMENTED       MD-027
 AI8513  HISTORY     - 20000915 GOOD             MD-027
 AI8513  HISTORY     - 20020907 GOOD             WR
 AI8513
 AI8513                          STATION DESCRIPTION
 AI8513
 AI8513'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8513'DESCRIPTION BY HOWARD COUNTY 2000    THE STATION IS AT ELLICOTT
 AI8513'CITY IN THE GROUNDS OF HOWARD COUNTY  ALPHA RIDGE LANDFILL. TO
 AI8513'REACH THE STATION FROM THE INTERSECTION OF   INTERSTATE I 70 AND
 AI8513'STATE HIGHWAY 29 GO WEST ALONG INTERSTATE 70  FOR ABOUT 4 MILES
 AI8513'TO  EXIT TO MARRIOTTSVILLE ROAD.  FROM THE END OF  THE RAMP TURN
 AI8513'RIGHT  (NORTH) AND GO  800 FEET TO THE ENTRANCE TO  THE LANDFILL ON
 AI8513'THE  LEFT. PASS THE ENTRANCE GATE AND GO 0.8 MILES  ALONG THE MAIN
 AI8513'PAVED ROAD (PASSIG THE WEIGHT STSATION AND THE  LANDFILLM
 AI8513'ADMINISTRATION BUILDING)  TO A FORK ON THE ROAD ( IN FROT  OF A BIG
 AI8513'LEACHATE TANK), CONTINUE STRAIGHT ON THE LEFT BRANCH FOR  0.25
 AI8513'MILES TI A DIRT ROAD AND AN  OLD BARN ON THE LEFT. TURN LEFT AND  GO
 AI8513'BEHIND THE BARN TO THE STATION.   THE STATION IS ON TOP OF A SLOPE
 AI8513'ABOUT 65 FEET WEST OF THE BSARN,  65 FEET TO THE SOUTHWEST
 AI8513'CORNER OF THE BARN, 78 FEET TO THE  NORTHWEST CORNER OF THE BARN
 AI8513'AND 53 FEET TO POLE G AND E 541548.    THE STATION IS A STANDARD
 AI8513'HOWARD  COUNTY SURVEY DISC SET ON  CONCGRETE BASE, FLUSH WITH
 AI8513'THE  GROUND.   IN THE FUTURE A PERMANENT METALIC TRIPODWILL BE
 AI8513'BUILT  OVER THE  MARK IN ORDER TO ALLOW ITS USE AS AN UNMANNED
 AI8513'RTK  STATION.
 AI8513'
 AI8513
 AI8513                          STATION RECOVERY (2002)
 AI8513
 AI8513'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (JFU)
 AI8513'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8509 ***********************************************************************
 AI8509  DESIGNATION -  BASE D
 AI8509  PID         -  AI8509
 AI8509  STATE/COUNTY-  MD/HOWARD
 AI8509  COUNTRY     -  US
 AI8509  USGS QUAD   -  SYKESVILLE (2016)
 AI8509
 AI8509                         *CURRENT SURVEY CONTROL
 AI8509  ______________________________________________________________________
 AI8509* NAD 83(2011) POSITION- 39 15 03.85850(N) 076 58 36.13175(W)   ADJUSTED
 AI8509* NAD 83(2011) ELLIP HT-   147.931 (meters)        (06/27/12)   ADJUSTED
 AI8509* NAD 83(2011) EPOCH   -  2010.00
 AI8509* NAVD 88 ORTHO HEIGHT -   179.9   (meters)      590.    (feet) GPS OBS
 AI8509  ______________________________________________________________________
 AI8509  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8509  GEOID HEIGHT    -        -31.920 (meters)                     GEOID99
 AI8509  GEOID HEIGHT    -        -31.941 (meters)                     GEOID18
 AI8509  NAD 83(2011) X  -  1,114,534.255 (meters)                     COMP
 AI8509  NAD 83(2011) Y  - -4,818,638.480 (meters)                     COMP
 AI8509  NAD 83(2011) Z  -  4,014,033.865 (meters)                     COMP
 AI8509  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 AI8509
 AI8509  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8509  Standards:
 AI8509         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8509            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8509  -------------------------------------------------------------------
 AI8509  NETWORK    0.90   1.10           0.40   0.33   0.56     -0.03458272
 AI8509  -------------------------------------------------------------------
 AI8509  Click here for local accuracies and other accuracy information.
 AI8509
 AI8509.The horizontal coordinates were established by GPS observations
 AI8509.and adjusted by the National Geodetic Survey in June 2012.
 AI8509
 AI8509.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8509.been affixed to the stable North American tectonic plate. See 
 AI8509.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8509
 AI8509.The horizontal coordinates are valid at the epoch date displayed above
 AI8509.which is a decimal equivalence of Year/Month/Day.
 AI8509
 AI8509.The orthometric height was determined by GPS observations and a
 AI8509.high-resolution geoid model.
 AI8509
 AI8509.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8509.GEOID18 height accuracy estimate available here.
 AI8509
 AI8509.Click photographs - Photos may exist for this station.
 AI8509
 AI8509.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8509
 AI8509.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8509
 AI8509.The ellipsoidal height was determined by GPS observations
 AI8509.and is referenced to NAD 83.
 AI8509
 AI8509. The following values were computed from the NAD 83(2011) position.
 AI8509
 AI8509;                    North         East     Units Scale Factor Converg.
 AI8509;SPC MD       -   175,878.812   402,010.903   MT  0.99997125   +0 00 52.6
 AI8509;SPC MD       -   577,029.07  1,318,930.77   sFT  0.99997125   +0 00 52.6
 AI8509;UTM  18      - 4,346,500.934   329,433.546   MT  0.99995822   -1 15 03.6
 AI8509
 AI8509!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8509!SPC MD       -   0.99997679  x   0.99997125  =   0.99994804
 AI8509!UTM  18      -   0.99997679  x   0.99995822  =   0.99993501
 AI8509
 AI8509_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2943346500(NAD 83)
 AI8509
 AI8509                          SUPERSEDED SURVEY CONTROL
 AI8509
 AI8509  NAD 83(2007)-  39 15 03.85847(N)    076 58 36.13251(W) AD(2002.00) 0
 AI8509  ELLIP H (02/10/07)  147.961  (m)                       GP(2002.00)    
 AI8509  ELLIP H (08/30/02)  147.960  (m)                       GP(       ) 4 2
 AI8509  NAD 83(1991)-  39 15 03.85821(N)    076 58 36.13252(W) AD(       ) 1
 AI8509  ELLIP H (11/16/00)  147.865  (m)                       GP(       ) 4 1
 AI8509
 AI8509.Superseded values are not recommended for survey control.
 AI8509
 AI8509.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8509.See file dsdata.pdf to determine how the superseded data were derived.
 AI8509
 AI8509_MARKER: DD = SURVEY DISK
 AI8509_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8509_STAMPING: BASE D
 AI8509_MARK LOGO: MD-027
 AI8509_PROJECTION: FLUSH
 AI8509_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8509_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8509+STABILITY: SURFACE MOTION
 AI8509_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8509+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8509
 AI8509  HISTORY     - Date     Condition        Report By
 AI8509  HISTORY     - 1999     MONUMENTED       MD-027
 AI8509  HISTORY     - 20000915 GOOD             MD-027
 AI8509
 AI8509                          STATION DESCRIPTION
 AI8509
 AI8509'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8509'DESCRIPTION BY HOWARD COUNTY 2000   THE STATION IS LOCATED IN THE
 AI8509'AREA OF DAYTON  IN THE BACK OF  THE  HOWARD COUNTY DAYTON REPAIR
 AI8509'CENTER ON  MARYLAND ROUTE 32.   TO REACH THE STATION  FROM THE
 AI8509'INTERSECTION OF ROUTE 32 AND  LINDEN CHURCH ROAD GO NNW  ALONG
 AI8509'ROUTE 32 FOR 1.E MILES TO THE  REPAIR SHOP ENTRANCE ON THE RIGHT,
 AI8509'THEN  TAKE THE SERVICE TRUCK  ROAD FOR ABOUT 400 FEET TO THE
 AI8509'STATION   ON THE LEFT.   THE STATION IS NEAR THE THE CORNER OF THE
 AI8509'BACK FENCE   OF THE  REPAIR SHOP COMPLEX, ABOUT 100 FEET TO A HUGE
 AI8509'SALT  STORAGE  CONE.   THE MARK IS A STANDARD HOWARD COUNTY
 AI8509'SURVEY  DISC SET ON A   CONCRETE BASE, FLUSH WITH THE GROUND. A
 AI8509'PERMANENT  METALIC   TRIPOD WAS BUILT OVER THE STATION IN ORDER
 AI8509'TO ALLOW ITS  USE AS AN   UNMANNED RTK SURVEY BASE.
 AI8509'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7307 ***********************************************************************
 HV7307  DESIGNATION -  BASFORD 1907
 HV7307  PID         -  HV7307
 HV7307  STATE/COUNTY-  MD/CALVERT
 HV7307  COUNTRY     -  US
 HV7307  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV7307
 HV7307                         *CURRENT SURVEY CONTROL
 HV7307  ______________________________________________________________________
 HV7307* NAD 83(1993) POSITION- 38 36 11.02351(N) 076 30 55.74042(W)   ADJUSTED
 HV7307* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 HV7307  ______________________________________________________________________
 HV7307  GEOID HEIGHT    -        -33.923 (meters)                     GEOID18
 HV7307  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 HV7307  HORZ ORDER      -  THIRD
 HV7307
 HV7307.The horizontal coordinates were established by classical geodetic methods
 HV7307.and adjusted by the National Geodetic Survey in November 1994.
 HV7307
 HV7307.The orthometric height was scaled from a topographic map.
 HV7307
 HV7307.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7307.GEOID18 height accuracy estimate available here.
 HV7307
 HV7307.Click photographs - Photos may exist for this station.
 HV7307
 HV7307.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7307
 HV7307. The following values were computed from the NAD 83(1993) position.
 HV7307
 HV7307;                    North         East     Units Scale Factor Converg.
 HV7307;SPC MD       -   104,055.540   442,203.585   MT  0.99996112   +0 18 14.8
 HV7307;SPC MD       -   341,388.88  1,450,796.26   sFT  0.99996112   +0 18 14.8
 HV7307;UTM  18      - 4,273,818.472   368,038.136   MT  0.99981445   -0 56 44.4
 HV7307
 HV7307!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7307!SPC MD       -   1.00000003  x   0.99996112  =   0.99996115
 HV7307!UTM  18      -   1.00000003  x   0.99981445  =   0.99981448
 HV7307
 HV7307:                Primary Azimuth Mark                     Grid Az
 HV7307:SPC MD       -  HARD 1898                                173 46 21.0
 HV7307:UTM  18      -  HARD 1898                                175 01 20.2
 HV7307
 HV7307_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6803873818(NAD 83)
 HV7307
 HV7307|---------------------------------------------------------------------|
 HV7307| PID    Reference Object                     Distance      Geod. Az  |
 HV7307|                                                           dddmmss.s |
 HV7307| HV7315 HARD 1898                           APPROX. 0.5 KM 1740435.8 |
 HV7307|---------------------------------------------------------------------|
 HV7307
 HV7307                          SUPERSEDED SURVEY CONTROL
 HV7307
 HV7307  NAD 83(1991)-  38 36 11.02298(N)    076 30 55.74074(W) AD(       ) 3
 HV7307  NAD 83(1986)-  38 36 11.02136(N)    076 30 55.75436(W) AD(       ) 3
 HV7307  NAD 27      -  38 36 10.58800(N)    076 30 56.89000(W) AD(       ) 3
 HV7307  USSD        -  38 36 10.96400(N)    076 30 56.71800(W) AD(       ) 3
 HV7307
 HV7307.Superseded values are not recommended for survey control.
 HV7307
 HV7307.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7307.See file dsdata.pdf to determine how the superseded data were derived.
 HV7307
 HV7307_MARKER: N = NAIL
 HV7307_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7307_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7307+STABILITY: SURFACE MOTION
 HV7307
 HV7307  HISTORY     - Date     Condition        Report By
 HV7307  HISTORY     - 1907     MONUMENTED       CGS
 HV7307  HISTORY     - 1960     SEE DESCRIPTION  CGS
 HV7307
 HV7307                          STATION DESCRIPTION
 HV7307
 HV7307'DESCRIBED BY COAST AND GEODETIC SURVEY 1907 (CMS)
 HV7307'ON THE WESTERN SIDE OF CHESAPEAKE BAY, ABOUT 1/4 MILE S OF PLUM
 HV7307'POINT WHARF, ON LAND BELONGING TO JACKSON BASFORD.  STATION IS ON
 HV7307'THE HIGH PART OF THE S END OF THE FIRST HIGH HILL S OF PLUM POINT
 HV7307'WHARF.  THIS HILL IS A HOGBACK RUNNING N AND S.  STATION IS SOME
 HV7307'DISTANCE BACK FROM EDGE OF CLIFF.
 HV7307'
 HV7307'STATION MARKED UNDERGROUND BY TWO HEXAGONAL DRAIN TILES SET ONE
 HV7307'ABOVE THE OTHER, THE TOP OF THE UPPER TILE BEING 3 FEET BELOW
 HV7307'SURFACE OF GROUND.  SURFACE MARK IS 6-INCH TILE PIPE SET IN
 HV7307'CEMENT.  A NAIL IN TOP MARKS THE CENTER, AND THE LETTERS U.S.C.
 HV7307'AND G.S. 1907 ARE ROUGHLY MARKED IN THE CEMENT.
 HV7307'
 HV7307'THE REFERENCE MARK IS SIMILAR TO THE STATION MARK EXCEPT THAT ONLY
 HV7307'ONE TILE WAS USED IN THE SUB-SURFACE MARK.  IT IS IN RANGE WITH A
 HV7307'LARGE NEW BARN NW OF THE STATION ON THE FARM OF WILLIAM HODESTER.
 HV7307'THE FOLLOWING AZIMUTHS ARE FROM THE STATION--CHIMNEY OF HANCES
 HV7307'HOUSE,S 29 DEG 11 MIN W.  N CHIMNEY OF WILSONS HOUSE,S 54 DEG 37
 HV7307'MIN W LIGHTNING ROD ON BASFORDS HOUSE,S 81 DEG 02 MIN W. N CHIMNEY
 HV7307'WILBERNS HOUSE, N 76 DEG 49 MIN W.  S CHIMNEY HUTCHINS HOUSE, N 24
 HV7307'DEG 09 MIN W.  LIGHTNING ROD OF MRS. CARPENTERS HOUSE, N 8 DEG 07
 HV7307'MIN E.
 HV7307
 HV7307                          STATION RECOVERY (1960)
 HV7307
 HV7307'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7307'STATION SEARCHED FOR BY 2 MEN FOR 1-1/2 HOURS BUT IT COULD NOT BE
 HV7307'FOUND.  THE TOP OF THE HILL HAS BEEN USED FOR FARM LAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4811 ***********************************************************************
 JV4811  DESIGNATION -  BASIN
 JV4811  PID         -  JV4811
 JV4811  STATE/COUNTY-  MD/CECIL
 JV4811  COUNTRY     -  US
 JV4811  USGS QUAD   -  CONOWINGO DAM (2016)
 JV4811
 JV4811                         *CURRENT SURVEY CONTROL
 JV4811  ______________________________________________________________________
 JV4811* NAD 83(1991) POSITION- 39 39 12.38836(N) 076 08 51.53238(W)   ADJUSTED
 JV4811* NAVD 88 ORTHO HEIGHT -    82.    (meters)      269.    (feet) SCALED
 JV4811  ______________________________________________________________________
 JV4811  GEOID HEIGHT    -        -32.938 (meters)                     GEOID18
 JV4811  LAPLACE CORR    -         -1.59  (seconds)                    DEFLEC18
 JV4811  HORZ ORDER      -  THIRD
 JV4811
 JV4811.The horizontal coordinates were established by classical geodetic methods
 JV4811.and adjusted by the National Geodetic Survey in January 1992.
 JV4811
 JV4811.The orthometric height was scaled from a topographic map.
 JV4811
 JV4811.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4811.GEOID18 height accuracy estimate available here.
 JV4811
 JV4811.Click photographs - Photos may exist for this station.
 JV4811
 JV4811.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4811
 JV4811. The following values were computed from the NAD 83(1991) position.
 JV4811
 JV4811;                    North         East     Units Scale Factor Converg.
 JV4811;SPC MD       -   220,892.897   473,154.258   MT  1.00004193   +0 32 05.9
 JV4811;SPC MD       -   724,712.78  1,552,340.26   sFT  1.00004193   +0 32 05.9
 JV4811;SPC PA S     -    36,791.117   737,520.335   MT  1.00005555   +1 02 22.5
 JV4811;SPC PA S     -   120,705.52  2,419,681.30   sFT  1.00005555   +1 02 22.5
 JV4811;UTM  18      - 4,389,923.031   401,542.448   MT  0.99971935   -0 43 56.7
 JV4811
 JV4811!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4811!SPC MD       -   0.99999234  x   1.00004193  =   1.00003427
 JV4811!SPC PA S     -   0.99999234  x   1.00005555  =   1.00004789
 JV4811!UTM  18      -   0.99999234  x   0.99971935  =   0.99971170
 JV4811
 JV4811:                Primary Azimuth Mark                     Grid Az
 JV4811:SPC MD       -  BASIN AZ MK                              130 09 52.4
 JV4811:SPC PA S     -  BASIN AZ MK                              129 39 35.8
 JV4811:UTM  18      -  BASIN AZ MK                              131 25 55.0
 JV4811
 JV4811_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0154289923(NAD 83)
 JV4811
 JV4811|---------------------------------------------------------------------|
 JV4811| PID    Reference Object                     Distance      Geod. Az  |
 JV4811|                                                           dddmmss.s |
 JV4811| CA9953 BASIN RM 1                           26.542 METERS 11628     |
 JV4811| CA9952 BASIN AZ MK                                        1304158.3 |
 JV4811| CA9954 BASIN RM 2                           26.618 METERS 33502     |
 JV4811| JV4812 CONOWINGO BAPTIST CHURCH SPIRE      APPROX. 3.4 KM 3364300.0 |
 JV4811|---------------------------------------------------------------------|
 JV4811
 JV4811                          SUPERSEDED SURVEY CONTROL
 JV4811
 JV4811  NAD 83(1986)-  39 39 12.38267(N)    076 08 51.53661(W) AD(       ) 3
 JV4811  NAD 27      -  39 39 12.00300(N)    076 08 52.71400(W) AD(       ) 3
 JV4811
 JV4811.Superseded values are not recommended for survey control.
 JV4811
 JV4811.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4811.See file dsdata.pdf to determine how the superseded data were derived.
 JV4811
 JV4811_MARKER: DS = TRIANGULATION STATION DISK
 JV4811_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4811_STAMPING: BASIN 1947
 JV4811_MARK LOGO: CGS
 JV4811_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4811+STABILITY: SURFACE MOTION
 JV4811
 JV4811  HISTORY     - Date     Condition        Report By
 JV4811  HISTORY     - 1947     MONUMENTED       CGS
 JV4811
 JV4811                          STATION DESCRIPTION
 JV4811
 JV4811'DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (CRR)
 JV4811'THE STATION IS LOCATED ABOUT 1-1/2 MILES SOUTHEAST OF THE
 JV4811'CONOWINGO POWERPLANT AND 1/2 MILE SOUTH OF THE VILLAGE OF
 JV4811'ROWLANDSVILLE ON A ROCKY, PASTURE HILLTOP.  IT IS 170 FEET SOUTH
 JV4811'OF A NARROW GRAVEL ROAD AND 160 FEET SOUTH OF A STONE WALL
 JV4811'WHICH RUNS PARALLEL TO THE ROAD.  THE MARK PROJECTS ABOUT
 JV4811'8 INCHES AND THE DISK IS STAMPED BASIN 1947.
 JV4811'
 JV4811'REFERENCE MARK NO. 1 IS 87.08 FEET NORTHEAST OF THE STATION
 JV4811'AND 100 FEET SOUTH OF THE STONE WALL.  THE MARK PROJECTS ABOUT
 JV4811'6 INCHES AND THE DISK IS STAMPED BASIN NO 1 1947.
 JV4811'
 JV4811'REFERENCE MARK NO. 2 IS 87.33 FEET NORTHWEST OF THE STATION AND
 JV4811'63 FEET SOUTH OF POWERLINE POLE NO. 11313.  THE MARK PROJECTS
 JV4811'ABOUT 6 INCHES AND THE DISK IS STAMPED BASIN NO 1 1947.
 JV4811'
 JV4811'THE AZIMUTH MARK IS 0.4 MILE EAST OF THE STATION, 25 FEET SOUTH
 JV4811'OF THE APPROXIMATE CENTERLINE OF THE GRAVEL ROAD, 6 FEET SOUTH OF A
 JV4811'STONE FENCE AND 6 FEET WEST OF POWERPOLE NO. 11305.  THE MARK
 JV4811'PROJECTS ABOUT 10 INCHES AND THE DISK IS STAMPED BASIN 1947.
 JV4811'
 JV4811'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 1 AND
 JV4811'U.S. HIGHWAY 222 AT THE NORTHEAST END OF CONOWINGO DAM, GO EAST
 JV4811'ON 222 FOR 0.7 MILE, BEAR LEFT OFF HIGHWAY ON GRAVEL ROAD FOR
 JV4811'0.7 MILE TO A BRIDGE.  TURN RIGHT OVER BRIDGE THROUGH
 JV4811'ROWLANDSVILLE FOR 0.1 MILE, TAKE RIGHT FORK AND CONTINUE UP HILL
 JV4811'ON NARROW WINDING ROAD FOR 0.65 MILE TO THE STATION ON THE
 JV4811'TOP OF A ROCKY HILL ABOUT 50 YARDS FROM THE ROAD ON THE RIGHT
 JV4811'AS DESCRIBED.  CONTINUE ON THIS ROAD FOR 0.4
 JV4811'MILE TO THE TOP OF A HILL AND THE AZIMUTH MARK AS
 JV4811'DESCRIBED.
 JV4811'
 JV4811'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5613 ***********************************************************************
 JV5613  DESIGNATION -  BASKET
 JV5613  PID         -  JV5613
 JV5613  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5613  COUNTRY     -  US
 JV5613  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5613
 JV5613                         *CURRENT SURVEY CONTROL
 JV5613  ______________________________________________________________________
 JV5613* NAD 83(1991) POSITION- 39 15 30.79220(N) 076 37 58.69385(W)   ADJUSTED
 JV5613* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5613  ______________________________________________________________________
 JV5613  GEOID HEIGHT    -        -32.719 (meters)                     GEOID18
 JV5613  LAPLACE CORR    -         -5.80  (seconds)                    DEFLEC18
 JV5613  HORZ ORDER      -  THIRD
 JV5613
 JV5613.The horizontal coordinates were established by classical geodetic methods
 JV5613.and adjusted by the National Geodetic Survey in January 1992.
 JV5613
 JV5613.The orthometric height was scaled from a topographic map.
 JV5613
 JV5613.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5613.GEOID18 height accuracy estimate available here.
 JV5613
 JV5613.Click photographs - Photos may exist for this station.
 JV5613
 JV5613.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5613
 JV5613. The following values were computed from the NAD 83(1991) position.
 JV5613
 JV5613;                    North         East     Units Scale Factor Converg.
 JV5613;SPC MD       -   176,772.820   431,677.438   MT  0.99997211   +0 13 49.3
 JV5613;SPC MD       -   579,962.16  1,416,261.73   sFT  0.99997211   +0 13 49.3
 JV5613;UTM  18      - 4,346,739.890   359,110.443   MT  0.99984441   -1 02 00.8
 JV5613
 JV5613!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5613!SPC MD       -   1.00000423  x   0.99997211  =   0.99997634
 JV5613!UTM  18      -   1.00000423  x   0.99984441  =   0.99984864
 JV5613
 JV5613:                Primary Azimuth Mark                     Grid Az
 JV5613:SPC MD       -  HAN USE 1915                             082 05 26.7
 JV5613:UTM  18      -  HAN USE 1915                             083 21 16.8
 JV5613
 JV5613_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5911046739(NAD 83)
 JV5613
 JV5613|---------------------------------------------------------------------|
 JV5613| PID    Reference Object                     Distance      Geod. Az  |
 JV5613|                                                           dddmmss.s |
 JV5613| JV5568 HAN USE 1915                        APPROX. 1.6 KM 0821916.0 |
 JV5613| CA9955 BASKET RM                            16.478 METERS 20330     |
 JV5613|---------------------------------------------------------------------|
 JV5613
 JV5613                          SUPERSEDED SURVEY CONTROL
 JV5613
 JV5613  NAD 83(1986)-  39 15 30.78875(N)    076 37 58.70283(W) AD(       ) 3
 JV5613  NAD 27      -  39 15 30.40800(N)    076 37 59.81000(W) AD(       ) 3
 JV5613  USSD        -  39 15 30.77200(N)    076 37 59.64800(W) AD(       ) 3
 JV5613
 JV5613.Superseded values are not recommended for survey control.
 JV5613
 JV5613.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5613.See file dsdata.pdf to determine how the superseded data were derived.
 JV5613
 JV5613_MARKER: DD = SURVEY DISK
 JV5613_SETTING: 0 = UNSPECIFIED SETTING
 JV5613
 JV5613  HISTORY     - Date     Condition        Report By
 JV5613  HISTORY     - 1915     MONUMENTED       USACE
 JV5613
 JV5613                          STATION DESCRIPTION
 JV5613
 JV5613'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1915 (EWE)
 JV5613'STATION IS ON THE SW SIDE OF SMITH COVE, A SMALL COVE IN MIDDLE
 JV5613'BRANCH, PATAPSCO RIVER, ON THE PROPERTY OF THE MARYLAND VENEER
 JV5613'AND BASKET COMPANY, AND BETWEEN THAT COMPANY WHARF AND THE WHARF
 JV5613'OF THE WESTPORT BRICK COMPANY.  STATION IS ON A HIGH BANK ABOUT
 JV5613'8 FEET BACK FROM ITS EDGE.  IT IS CLOSE BY A TELEPHONE GUY POLE
 JV5613'AND ALSO A LARGE VAT.  A BLAZE WAS CUT IN A 14-INCH CHESTNUT
 JV5613'TREE DISTANT 10.3 FEET SW OF THE STATION.  THE STATION MARK IS
 JV5613'STANDARD STATION MARK SET IN CONCRETE MONUMENT.  A STANDARD
 JV5613'DISK REFERENCE MARK WAS SET IN A CONCRETE MONUMENT WITH TOP
 JV5613'PROJECTING ABOUT 6 INCHES ABOVE THE GROUND.  IT IS 16.478 METERS
 JV5613'(54.06 FEET) FROM THE STATION S 23 DEG 30 MIN W.  THE
 JV5613'STATION REPORTED LOST IN 1924 BUT THE REFERENCE MARK RECOVERED
 JV5613'IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG4031 ***********************************************************************
 DG4031  DESIGNATION -  BASKET
 DG4031  PID         -  DG4031
 DG4031  STATE/COUNTY-  MD/WORCESTER
 DG4031  COUNTRY     -  US
 DG4031  USGS QUAD   -  PUBLIC LANDING (2016)
 DG4031
 DG4031                         *CURRENT SURVEY CONTROL
 DG4031  ______________________________________________________________________
 DG4031* NAD 83(1986) POSITION- 38 14 08.     (N) 075 18 47.     (W)   SCALED
 DG4031* NAVD 88 ORTHO HEIGHT -     9.987 (meters)       32.77  (feet) ADJUSTED
 DG4031  ______________________________________________________________________
 DG4031  GEOID HEIGHT    -        -36.142 (meters)                     GEOID18
 DG4031  DYNAMIC HEIGHT  -          9.980 (meters)       32.74  (feet) COMP
 DG4031  MODELED GRAVITY -    979,992.5   (mgal)                       NAVD 88
 DG4031
 DG4031  VERT ORDER      -  SECOND    CLASS I
 DG4031
 DG4031.The horizontal coordinates were scaled from a map and have
 DG4031.an estimated accuracy of +/- 6 seconds.
 DG4031
 DG4031.The orthometric height was determined by differential leveling and
 DG4031.adjusted by the NATIONAL GEODETIC SURVEY
 DG4031.in June 2004.
 DG4031
 DG4031.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG4031.GEOID18 height accuracy estimate available here.
 DG4031
 DG4031.Click photographs - Photos may exist for this station.
 DG4031
 DG4031.The dynamic height is computed by dividing the NAVD 88
 DG4031.geopotential number by the normal gravity value computed on the
 DG4031.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG4031.degrees latitude (g = 980.6199 gals.).
 DG4031
 DG4031.The modeled gravity was interpolated from observed gravity values.
 DG4031
 DG4031;                    North         East    Units  Estimated Accuracy
 DG4031;SPC MD       -    64,510.      547,690.      MT  (+/- 180 meters Scaled)
 DG4031
 DG4031_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH726319(NAD 83)
 DG4031
 DG4031                          SUPERSEDED SURVEY CONTROL
 DG4031
 DG4031.No superseded survey control is available for this station.
 DG4031
 DG4031_MARKER: DD = SURVEY DISK
 DG4031_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG4031_STAMPING: BASKET 1962
 DG4031_MARK LOGO: MDBCSM
 DG4031_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG4031_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG4031+STABILITY: SURFACE MOTION
 DG4031_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG4031+SATELLITE: SATELLITE OBSERVATIONS - December 06, 1999
 DG4031
 DG4031  HISTORY     - Date     Condition        Report By
 DG4031  HISTORY     - 1962     MONUMENTED       MDBCSM
 DG4031  HISTORY     - 19991206 GOOD             MDSHA
 DG4031
 DG4031                          STATION DESCRIPTION
 DG4031
 DG4031'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG4031'THE STATION IS LOCATED 8.0 MILES (12.9 KM) SOUTHWEST OF BERLIN AND 1.5
 DG4031'MILES (2.4 KM) SOUTHWEST OF NEWARK AT BASKET-SWITCH, MARYLAND. TO
 DG4031'REACH THE STATION FROM THE POST OFFICE IN NEWARK, GO SOUTHWEST ON
 DG4031'NEWARK ROAD (OLD U.S.  ROUTE 113) FOR 0.7 MILES (1.1 KM) TO A
 DG4031'T-INTERSECTION.  TURN RIGHT AND GO SOUTHWEST ON U.S.HIGHWAY 113 FOR
 DG4031'0.7 MILES (1.1 KM) TO BASKET-SWITCH ROAD AND THE STATION ON THE LEFT.
 DG4031'IT IS A STANDARD MARYLAND CONTROL SURVEY DISK SET IN THE TOP OF A
 DG4031'CONCRETE POST, 83.0 FEET (25.3 M) SOUTH OF THE CENTER LINE OF THE
 DG4031'HIGHWAY, 42.3 FEET (12.9 M) WEST OF THE NORTHWEST CORNER OF A 1 1/2
 DG4031'STORY DWELLING, 15.0 FEET (4.6 M) EAST OF THE CENTER OF BASKET-SWITCH
 DG4031'ROAD, 42.8 FEET (13.0 M) NORTHWEST OF THE SOUTHWEST CORNER OF A 1 1/2
 DG4031'STORY DWELLING, 26.0 FEET (7.9 M) NORTHWEST OF THE NORTH END OF A 12
 DG4031'INCH CONCRETE PIPE RUNNING UNDER AN ENTRANCE, SET FLUSH WITH THE
 DG4031'GROUND AND STAMPED BASKET 1962.  OWNWERSHIP= ROAD RIGHT OF WAY
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7288 ***********************************************************************
 JV7288  DESIGNATION -  BATA
 JV7288  PID         -  JV7288
 JV7288  STATE/COUNTY-  MD/HARFORD
 JV7288  COUNTRY     -  US
 JV7288  USGS QUAD   -  PERRYMAN (2016)
 JV7288
 JV7288                         *CURRENT SURVEY CONTROL
 JV7288  ______________________________________________________________________
 JV7288* NAD 83(2011) POSITION- 39 27 59.17880(N) 076 14 34.71131(W)   ADJUSTED
 JV7288* NAD 83(2011) ELLIP HT-   -28.707 (meters)        (06/27/12)   ADJUSTED
 JV7288* NAD 83(2011) EPOCH   -  2010.00
 JV7288* NAVD 88 ORTHO HEIGHT -     4.4   (meters)       14.    (feet) GPS OBS
 JV7288  ______________________________________________________________________
 JV7288  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7288  GEOID HEIGHT    -        -33.390 (meters)                     GEOID93
 JV7288  GEOID HEIGHT    -        -33.117 (meters)                     GEOID18
 JV7288  NAD 83(2011) X  -  1,172,510.061 (meters)                     COMP
 JV7288  NAD 83(2011) Y  - -4,789,109.851 (meters)                     COMP
 JV7288  NAD 83(2011) Z  -  4,032,409.390 (meters)                     COMP
 JV7288  LAPLACE CORR    -         -2.14  (seconds)                    DEFLEC18
 JV7288
 JV7288  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7288  Standards:
 JV7288         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7288            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7288  -------------------------------------------------------------------
 JV7288  NETWORK    1.07   2.00           0.46   0.41   1.02      0.16380261
 JV7288  -------------------------------------------------------------------
 JV7288  Click here for local accuracies and other accuracy information.
 JV7288
 JV7288.The horizontal coordinates were established by GPS observations
 JV7288.and adjusted by the National Geodetic Survey in June 2012.
 JV7288
 JV7288.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7288.been affixed to the stable North American tectonic plate. See 
 JV7288.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7288
 JV7288.The horizontal coordinates are valid at the epoch date displayed above
 JV7288.which is a decimal equivalence of Year/Month/Day.
 JV7288
 JV7288.The orthometric height was determined by GPS observations and a
 JV7288.high-resolution geoid model.
 JV7288
 JV7288.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7288.GEOID18 height accuracy estimate available here.
 JV7288
 JV7288.Click photographs - Photos may exist for this station.
 JV7288
 JV7288.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7288
 JV7288.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7288
 JV7288.The ellipsoidal height was determined by GPS observations
 JV7288.and is referenced to NAD 83.
 JV7288
 JV7288. The following values were computed from the NAD 83(2011) position.
 JV7288
 JV7288;                    North         East     Units Scale Factor Converg.
 JV7288;SPC MD       -   200,058.853   465,145.025   MT  1.00000292   +0 28 30.5
 JV7288;SPC MD       -   656,359.75  1,526,063.30   sFT  1.00000292   +0 28 30.5
 JV7288;UTM  18      - 4,369,277.107   393,077.196   MT  0.99974076   -0 47 24.5
 JV7288
 JV7288!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7288!SPC MD       -   1.00000450  x   1.00000292  =   1.00000742
 JV7288!UTM  18      -   1.00000450  x   0.99974076  =   0.99974526
 JV7288
 JV7288:                Primary Azimuth Mark                     Grid Az
 JV7288:SPC MD       -  LONG BAR AZ MK                           236 06 53.9
 JV7288:UTM  18      -  LONG BAR AZ MK                           237 22 48.9
 JV7288
 JV7288_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9307769277(NAD 83)
 JV7288
 JV7288|---------------------------------------------------------------------|
 JV7288| PID    Reference Object                     Distance      Geod. Az  |
 JV7288|                                                           dddmmss.s |
 JV7288| JV6797 LONG BAR AZ MK                      494.317 METERS 2363524.4 |
 JV7288|---------------------------------------------------------------------|
 JV7288
 JV7288                          SUPERSEDED SURVEY CONTROL
 JV7288
 JV7288  NAD 83(2007)-  39 27 59.17895(N)    076 14 34.71201(W) AD(2002.00) 0
 JV7288  ELLIP H (02/10/07)  -28.688  (m)                       GP(2002.00)    
 JV7288  ELLIP H (08/30/02)  -28.695  (m)                       GP(       ) 4 2
 JV7288  NAD 83(1991)-  39 27 59.17855(N)    076 14 34.71238(W) AD(       ) 1
 JV7288  ELLIP H (08/17/94)  -28.722  (m)                       GP(       ) 4 1
 JV7288
 JV7288.Superseded values are not recommended for survey control.
 JV7288
 JV7288.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7288.See file dsdata.pdf to determine how the superseded data were derived.
 JV7288
 JV7288_MARKER: DD = SURVEY DISK
 JV7288_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7288_STAMPING: 146 BATA 1993
 JV7288_MARK LOGO: MD-025
 JV7288_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7288_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7288+STABILITY: SURFACE MOTION
 JV7288_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7288+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2006
 JV7288
 JV7288  HISTORY     - Date     Condition        Report By
 JV7288  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7288  HISTORY     - 20060930 GOOD             USPSQD
 JV7288
 JV7288                          STATION DESCRIPTION
 JV7288
 JV7288'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7288'THE STATION IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 0.5 MILES
 JV7288'WEST OF THE VILLAGE OF BELCAMP.
 JV7288'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV7288'STATE HIGHWAY 24 PROCEED EAST ALONG U.S. HIGHWAY 40 3.7 MILES TO THE
 JV7288'ENTRANCE OF THE BELCAMP POST OFFICE AND SHOE OUTLET STORE AND THE
 JV7288'STATION ON THE RIGHT.
 JV7288'THE STATION IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7288'CONCRETE FLUSH WITH THE GROUND STAMPED 146 BATA 1993.
 JV7288'THE STATION IS 3.3 FEET SOUTHEAST FROM THE FACE OF CURB TO U.S.
 JV7288'HIGHWAY 40 WESTBOUND, 22.0 FEET SOUTHWEST FROM A SIGN, 56.5 FEET
 JV7288'NORTHWEST FROM POWER POLE NUMBER 99, AND 17.3 FEET NORTHEAST FROM A
 JV7288'GUARD RAIL.
 JV7288
 JV7288                          STATION RECOVERY (2006)
 JV7288
 JV7288'RECOVERY NOTE BY US POWER SQUADRON 2006 (JM)
 JV7288'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7289 ***********************************************************************
 JV7289  DESIGNATION -  BATA AZ MK
 JV7289  PID         -  JV7289
 JV7289  STATE/COUNTY-  MD/HARFORD
 JV7289  COUNTRY     -  US
 JV7289  USGS QUAD   -  PERRYMAN (2016)
 JV7289
 JV7289                         *CURRENT SURVEY CONTROL
 JV7289  ______________________________________________________________________
 JV7289* NAD 83(2011) POSITION- 39 28 12.48597(N) 076 14 11.01124(W)   ADJUSTED
 JV7289* NAD 83(2011) ELLIP HT-   -23.176 (meters)        (06/27/12)   ADJUSTED
 JV7289* NAD 83(2011) EPOCH   -  2010.00
 JV7289* NAVD 88 ORTHO HEIGHT -     9.9   (meters)       32.    (feet) GPS OBS
 JV7289  ______________________________________________________________________
 JV7289  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7289  GEOID HEIGHT    -        -33.390 (meters)                     GEOID93
 JV7289  GEOID HEIGHT    -        -33.116 (meters)                     GEOID18
 JV7289  NAD 83(2011) X  -  1,172,999.278 (meters)                     COMP
 JV7289  NAD 83(2011) Y  - -4,788,725.867 (meters)                     COMP
 JV7289  NAD 83(2011) Z  -  4,032,729.719 (meters)                     COMP
 JV7289  LAPLACE CORR    -         -2.22  (seconds)                    DEFLEC18
 JV7289
 JV7289  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7289  Standards:
 JV7289         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7289            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7289  -------------------------------------------------------------------
 JV7289  NETWORK    1.07   1.98           0.47   0.40   1.01      0.15183180
 JV7289  -------------------------------------------------------------------
 JV7289  Click here for local accuracies and other accuracy information.
 JV7289
 JV7289.The horizontal coordinates were established by GPS observations
 JV7289.and adjusted by the National Geodetic Survey in June 2012.
 JV7289
 JV7289.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7289.been affixed to the stable North American tectonic plate. See 
 JV7289.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7289
 JV7289.The horizontal coordinates are valid at the epoch date displayed above
 JV7289.which is a decimal equivalence of Year/Month/Day.
 JV7289
 JV7289.The orthometric height was determined by GPS observations and a
 JV7289.high-resolution geoid model.
 JV7289
 JV7289.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7289.GEOID18 height accuracy estimate available here.
 JV7289
 JV7289.Click photographs - Photos may exist for this station.
 JV7289
 JV7289.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7289
 JV7289.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7289
 JV7289.The ellipsoidal height was determined by GPS observations
 JV7289.and is referenced to NAD 83.
 JV7289
 JV7289. The following values were computed from the NAD 83(2011) position.
 JV7289
 JV7289;                    North         East     Units Scale Factor Converg.
 JV7289;SPC MD       -   200,473.953   465,708.103   MT  1.00000358   +0 28 45.4
 JV7289;SPC MD       -   657,721.63  1,527,910.67   sFT  1.00000358   +0 28 45.4
 JV7289;UTM  18      - 4,369,679.566   393,649.152   MT  0.99973926   -0 47 09.7
 JV7289
 JV7289!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7289!SPC MD       -   1.00000364  x   1.00000358  =   1.00000722
 JV7289!UTM  18      -   1.00000364  x   0.99973926  =   0.99974290
 JV7289
 JV7289_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9364969679(NAD 83)
 JV7289
 JV7289|---------------------------------------------------------------------|
 JV7289| PID    Reference Object                     Distance      Geod. Az  |
 JV7289|                                                           dddmmss.s |
 JV7289| JV6718 BELCAMP                             369.247 METERS 06135     |
 JV7289|---------------------------------------------------------------------|
 JV7289
 JV7289                          SUPERSEDED SURVEY CONTROL
 JV7289
 JV7289  NAD 83(2007)-  39 28 12.48611(N)    076 14 11.01194(W) AD(2002.00) 0
 JV7289  ELLIP H (02/10/07)  -23.157  (m)                       GP(2002.00)    
 JV7289  ELLIP H (08/30/02)  -23.161  (m)                       GP(       ) 4 2
 JV7289  NAD 83(1991)-  39 28 12.48568(N)    076 14 11.01236(W) AD(       ) 1
 JV7289  ELLIP H (08/17/94)  -23.184  (m)                       GP(       ) 4 1
 JV7289
 JV7289.Superseded values are not recommended for survey control.
 JV7289
 JV7289.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7289.See file dsdata.pdf to determine how the superseded data were derived.
 JV7289
 JV7289_MARKER: DD = SURVEY DISK
 JV7289_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7289_STAMPING: 146 BATA AZ MK 1993
 JV7289_MARK LOGO: MD-025
 JV7289_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7289_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7289+STABILITY: SURFACE MOTION
 JV7289_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7289+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7289
 JV7289  HISTORY     - Date     Condition        Report By
 JV7289  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7289  HISTORY     - 20060930 MARK NOT FOUND   USPSQD
 JV7289
 JV7289                          STATION DESCRIPTION
 JV7289
 JV7289'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7289'THE AZIMUTH MARK IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 0.5
 JV7289'MILES WEST OF THE VILLAGE OF BELCAMP.
 JV7289'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV7289'STATE HIGHWAY 24 PROCEED EAST ALONG U.S. HIGHWAY 40 3.7 MILES TO THE
 JV7289'ENTRANCE OF THE BELCAMP POST OFFICE AND SHOE OUTLET STORE PASSING THE
 JV7289'STATION ON THE RIGHT.  CONTINUE EAST ALONG U.S. HIGHWAY 40 0.4 MILES
 JV7289'TO ITS INTERSECTION WITH RIVERSIDE PARKWAY AND THE AZIMUTH MARK ON
 JV7289'THE LEFT.  THE AZIMUTH MARK IS LOCATED IN THE ISLAND OF THE
 JV7289'INTERSECTION OF RIVERSIDE PARKWAY AND U.S. HIGHWAY 40.
 JV7289'THE AZIMUTH MARK IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7289'CONCRETE FLUSH WITH THE GROUND STAMPED 146 BATA AZ MK 1993.
 JV7289'THE AZIMUTH MARK IS 42.0 FEET EAST FROM THE SOUTHWEST CORNER OF THE
 JV7289'ISLAND, 55.4 FEET WEST FROM THE EAST CORNER OF THE ISLAND 13.6 FEET
 JV7289'NORTHWEST FROM FACE OF CURB TO U.S. HIGHWAY 40 WESTBOUND, 18.3 FEET
 JV7289'NORTH FROM A LIGHT POLE.
 JV7289
 JV7289                          STATION RECOVERY (2006)
 JV7289
 JV7289'RECOVERY NOTE BY US POWER SQUADRON 2006 (JR)
 JV7289'AREA RELANDSCAPED IN 2002.  MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5648 ***********************************************************************
 HV5648  DESIGNATION -  BATEMAN
 HV5648  PID         -  HV5648
 HV5648  STATE/COUNTY-  MD/TALBOT
 HV5648  COUNTRY     -  US
 HV5648  USGS QUAD   -  EASTON (2016)
 HV5648
 HV5648                         *CURRENT SURVEY CONTROL
 HV5648  ______________________________________________________________________
 HV5648* NAD 83(1991) POSITION- 38 45 28.12305(N) 076 06 39.75637(W)   ADJUSTED
 HV5648* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5648  ______________________________________________________________________
 HV5648  GEOID HEIGHT    -        -34.637 (meters)                     GEOID18
 HV5648  LAPLACE CORR    -         -3.54  (seconds)                    DEFLEC18
 HV5648  HORZ ORDER      -  THIRD
 HV5648
 HV5648.The horizontal coordinates were established by classical geodetic methods
 HV5648.and adjusted by the National Geodetic Survey in January 1992.
 HV5648
 HV5648.The orthometric height was scaled from a topographic map.
 HV5648
 HV5648.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5648.GEOID18 height accuracy estimate available here.
 HV5648
 HV5648.Click photographs - Photos may exist for this station.
 HV5648
 HV5648.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5648
 HV5648. The following values were computed from the NAD 83(1991) position.
 HV5648
 HV5648;                    North         East     Units Scale Factor Converg.
 HV5648;SPC MD       -   121,497.671   477,264.008   MT  0.99995196   +0 33 28.6
 HV5648;SPC MD       -   398,613.61  1,565,823.67   sFT  0.99995196   +0 33 28.6
 HV5648;UTM  18      - 4,290,487.267   403,464.365   MT  0.99971476   -0 41 44.2
 HV5648
 HV5648!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5648!SPC MD       -   1.00000532  x   0.99995196  =   0.99995727
 HV5648!UTM  18      -   1.00000532  x   0.99971476  =   0.99972007
 HV5648
 HV5648:                Primary Azimuth Mark                     Grid Az
 HV5648:SPC MD       -  MELON                                    220 37 05.7
 HV5648:UTM  18      -  MELON                                    221 52 18.5
 HV5648
 HV5648_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0346490487(NAD 83)
 HV5648
 HV5648|---------------------------------------------------------------------|
 HV5648| PID    Reference Object                     Distance      Geod. Az  |
 HV5648|                                                           dddmmss.s |
 HV5648| HV5641 MELON                               APPROX. 0.7 KM 2211034.3 |
 HV5648| HV5638 RADCLIFFE                           439.404 METERS 2893810.6 |
 HV5648|---------------------------------------------------------------------|
 HV5648
 HV5648                          SUPERSEDED SURVEY CONTROL
 HV5648
 HV5648  NAD 83(1986)-  38 45 28.11877(N)    076 06 39.77271(W) AD(       ) 3
 HV5648  NAD 27      -  38 45 27.65600(N)    076 06 41.03600(W) AD(       ) 3
 HV5648  USSD        -  38 45 28.06300(N)    076 06 40.83200(W) AD(       ) 3
 HV5648
 HV5648.Superseded values are not recommended for survey control.
 HV5648
 HV5648.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5648.See file dsdata.pdf to determine how the superseded data were derived.
 HV5648
 HV5648_MARKER: H = DRILL HOLE
 HV5648_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5648_PROJECTION: PROJECTING 10 CENTIMETERS
 HV5648_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5648
 HV5648  HISTORY     - Date     Condition        Report By
 HV5648  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5648  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5648
 HV5648                          STATION DESCRIPTION
 HV5648
 HV5648'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5648'ON THE SOUTHEASTERN SHORE OF THE UPPER PART OF TRED AVON RIVER,
 HV5648'ABOUT 3/8 MILE E OF ENTRANCE TO DIXON CREEK, AND 1-1/8 MILES SW OF
 HV5648'EASTON POINT WHARF.  STATION IS ON MARSH, ABOUT 1 FOOT ABOVE HIGH
 HV5648'WATER, 5 YARDS SE OF SHORE, 12 YARDS SW OF SHORE, AND 20 YARDS NE
 HV5648'OF HIGH LAND.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE
 HV5648'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV5648'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV5648'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5648'TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN
 HV5648'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV5648'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5648'ARE AS FOLLOWS--LEFT END OF BOATHOUSE ROOF, 1/2 MILE, S 66 DEG 28
 HV5648'MIN W.  PEAK OF BARN, 1/2 MILE, S 78 DEG 16 MIN W.  NEAR PEAK OF
 HV5648'CORN HOUSE, 1/2 MILE, S 79 DEG 47 MIN W.  LEFT CHIMNEY OF LARGE
 HV5648'HOUSE, 7/8 MILE, N 75 DEG 5 MIN W.  WEATHER VANE ON LARGE HOUSE,
 HV5648'1/4 MILE, N 61 DEG 22 MIN W.  MIDDLE DORMER WINDOW OF LARGE HOUSE,
 HV5648'3/8 MILE, N 0 DEG 35 MIN E.  PEAK OF BARN, 3/8 MILE, N 23 DEG 15
 HV5648'MIN E.  WINDMILL, 1/4 MILE, S 55 DEG 16 MIN E.
 HV5648
 HV5648                          STATION RECOVERY (1940)
 HV5648
 HV5648'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5648'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  MAY HAVE BEEN WASHED
 HV5648'OUT, SHORE LINE SHOWS CONSIDERABLE EROSION, HIGH LAND STILL
 HV5648'INTACT, MARSH GROWN WITH HEAVY GROWTH OF GRASS AND WATER BUSHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5006 ***********************************************************************
 JV5006  DESIGNATION -  BATH
 JV5006  PID         -  JV5006
 JV5006  STATE/COUNTY-  MD/QUEEN ANNES
 JV5006  COUNTRY     -  US
 JV5006  USGS QUAD   -  CENTREVILLE (2017)
 JV5006
 JV5006                         *CURRENT SURVEY CONTROL
 JV5006  ______________________________________________________________________
 JV5006* NAD 83(1991) POSITION- 39 04 47.49187(N) 076 06 43.97745(W)   ADJUSTED
 JV5006* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5006  ______________________________________________________________________
 JV5006  GEOID HEIGHT    -        -33.622 (meters)                     GEOID18
 JV5006  LAPLACE CORR    -         -2.85  (seconds)                    DEFLEC18
 JV5006  HORZ ORDER      -  THIRD
 JV5006
 JV5006.The horizontal coordinates were established by classical geodetic methods
 JV5006.and adjusted by the National Geodetic Survey in January 1992.
 JV5006
 JV5006.The orthometric height was scaled from a topographic map.
 JV5006
 JV5006.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5006.GEOID18 height accuracy estimate available here.
 JV5006
 JV5006.Click photographs - Photos may exist for this station.
 JV5006
 JV5006.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5006
 JV5006. The following values were computed from the NAD 83(1991) position.
 JV5006
 JV5006;                    North         East     Units Scale Factor Converg.
 JV5006;SPC MD       -   157,244.945   476,814.437   MT  0.99995617   +0 33 25.9
 JV5006;SPC MD       -   515,894.46  1,564,348.70   sFT  0.99995617   +0 33 25.9
 JV5006;UTM  18      - 4,326,227.331   403,798.371   MT  0.99971395   -0 42 04.3
 JV5006
 JV5006!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5006!SPC MD       -   1.00000531  x   0.99995617  =   0.99996148
 JV5006!UTM  18      -   1.00000531  x   0.99971395  =   0.99971926
 JV5006
 JV5006_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0379826227(NAD 83)
 JV5006
 JV5006                          SUPERSEDED SURVEY CONTROL
 JV5006
 JV5006  NAD 83(1986)-  39 04 47.48617(N)    076 06 43.98951(W) AD(       ) 3
 JV5006  NAD 27      -  39 04 47.09700(N)    076 06 45.16900(W) AD(       ) 3
 JV5006  USSD        -  39 04 47.48000(N)    076 06 44.96400(W) AD(       ) 3
 JV5006
 JV5006.Superseded values are not recommended for survey control.
 JV5006
 JV5006.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5006.See file dsdata.pdf to determine how the superseded data were derived.
 JV5006
 JV5006_MARKER: H = DRILL HOLE
 JV5006_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5006_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5006+STABILITY: SURFACE MOTION
 JV5006
 JV5006  HISTORY     - Date     Condition        Report By
 JV5006  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5006  HISTORY     - 1941     GOOD             CGS
 JV5006  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5006
 JV5006                          STATION DESCRIPTION
 JV5006
 JV5006'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5006'STATION IS ON THE SOUTHERN SHORE OF CORSICA RIVER, ON WASH POINT,
 JV5006'ABOUT 2 MILES E OF CHESTER RIVER, 1/2 MILE W OF ROCKY POINT, AND
 JV5006'1/4 MILE SE OF SHIP POINT, ON A MARSH POINT, ABOUT 1 FOOT ABOVE
 JV5006'HIGH WATER, 15 YARDS E OF SHORE, 13 YARDS W OF A POND, AND
 JV5006'SURROUNDED BY A DENSE GROWTH OF BUSHES.
 JV5006'
 JV5006'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5006'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5006'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 8 INCHES.  THE
 JV5006'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5006'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5006'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5006'
 JV5006'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5006'FOLLOWS--NAIL IN BLAZE IN 15-INCH PEAR TREE, 6.79 METERS (22.28
 JV5006'FEET), S 16 DEG 07 MIN W.  LEFT TANGENT OF PEAK OF BARN, 1 MILE S 55
 JV5006'DEG 32 MIN W.  EARLES WINDMILL, 1-5/8 MILES, S 84 DEG 37 MIN W.  LEFT
 JV5006'EDGE OF EARLES WHARF HOUSE, 1-1/2 MILES, S 87 DEG 32 MIN W.  E CHIMNEY
 JV5006'OF HOUSE, 1 MILE, N 62 DEG 52 MIN W. S CHIMNEY OF HOUSE, 3/8 MILE,
 JV5006'N 28 DEG 11 MIN W. W CHIMNEY OF HOUSE, 3/4 MILE, N 68 DEG 06 MIN E.
 JV5006'N ONE OF TWO CEDAR TREES ON HILL, 1/4 MILE, S 62 DEG 05 MIN E. NAIL
 JV5006'IN BLAZE IN 12-INCH HACKBERRY TREE, 3.06 METERS (10.04 FEET),
 JV5006'S 02 DEG 42 MIN E.
 JV5006
 JV5006                          STATION RECOVERY (1941)
 JV5006
 JV5006'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5006'STATION FOUND AS DESCRIBED.  DESCRIPTION SHOULD STATE THAT THE
 JV5006'STATION IS ONLY 50 FEET FROM HIGH GROUND AND IS NOT ON POINT.  THE
 JV5006'PEAR TREE REFERRED TO IN THE DESCRIPTION WAS FOUND.  STATION IS 52
 JV5006'STRIDES FROM A SYCAMORE ON SHORE.
 JV5006
 JV5006                          STATION RECOVERY (1961)
 JV5006
 JV5006'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5006'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  NONE OF THE
 JV5006'REFERENCE TREES COULD BE FOUND.  STATION MAY STILL BE INTACT BUT
 JV5006'WILL BE EXTREMELY DIFFICULT TO FIND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5360 ***********************************************************************
 JV5360  DESIGNATION -  BATTERY
 JV5360  PID         -  JV5360
 JV5360  STATE/COUNTY-  MD/BALTIMORE
 JV5360  COUNTRY     -  US
 JV5360  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5360
 JV5360                         *CURRENT SURVEY CONTROL
 JV5360  ______________________________________________________________________
 JV5360* NAD 83(1991) POSITION- 39 20 06.54044(N) 076 19 50.16443(W)   ADJUSTED
 JV5360* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5360  ______________________________________________________________________
 JV5360  GEOID HEIGHT    -        -33.148 (meters)                     GEOID18
 JV5360  LAPLACE CORR    -         -2.62  (seconds)                    DEFLEC18
 JV5360  HORZ ORDER      -  SECOND
 JV5360
 JV5360.The horizontal coordinates were established by classical geodetic methods
 JV5360.and adjusted by the National Geodetic Survey in January 1992.
 JV5360
 JV5360.The orthometric height was scaled from a topographic map.
 JV5360
 JV5360.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5360.GEOID18 height accuracy estimate available here.
 JV5360
 JV5360.Click photographs - Photos may exist for this station.
 JV5360
 JV5360.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5360
 JV5360. The following values were computed from the NAD 83(1991) position.
 JV5360
 JV5360;                    North         East     Units Scale Factor Converg.
 JV5360;SPC MD       -   185,424.395   457,711.491   MT  0.99998193   +0 25 12.5
 JV5360;SPC MD       -   608,346.54  1,501,675.12   sFT  0.99998193   +0 25 12.5
 JV5360;UTM  18      - 4,354,813.736   385,324.392   MT  0.99976192   -0 50 36.6
 JV5360
 JV5360!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5360!SPC MD       -   1.00000524  x   0.99998193  =   0.99998717
 JV5360!UTM  18      -   1.00000524  x   0.99976192  =   0.99976716
 JV5360
 JV5360:                Primary Azimuth Mark                     Grid Az
 JV5360:SPC MD       -  DAYS                                     103 18 16.3
 JV5360:UTM  18      -  DAYS                                     104 34 05.4
 JV5360
 JV5360_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8532454813(NAD 83)
 JV5360
 JV5360|---------------------------------------------------------------------|
 JV5360| PID    Reference Object                     Distance      Geod. Az  |
 JV5360|                                                           dddmmss.s |
 JV5360| CA9956 BATTERY RM 1                         21.406 METERS 07457     |
 JV5360| JV5345 DAYS                                APPROX. 2.8 KM 1034328.8 |
 JV5360| CA9957 BATTERY RM 2                         29.678 METERS 24736     |
 JV5360|---------------------------------------------------------------------|
 JV5360
 JV5360                          SUPERSEDED SURVEY CONTROL
 JV5360
 JV5360  NAD 83(1986)-  39 20 06.53462(N)    076 19 50.17208(W) AD(       ) 2
 JV5360  NAD 27      -  39 20 06.14900(N)    076 19 51.31900(W) AD(       ) 2
 JV5360
 JV5360.Superseded values are not recommended for survey control.
 JV5360
 JV5360.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5360.See file dsdata.pdf to determine how the superseded data were derived.
 JV5360
 JV5360_MARKER: DS = TRIANGULATION STATION DISK
 JV5360_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5360_STAMPING: BATTERY 1934
 JV5360_MARK LOGO: CGS
 JV5360_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5360+STABILITY: SURFACE MOTION
 JV5360
 JV5360  HISTORY     - Date     Condition        Report By
 JV5360  HISTORY     - 1934     MONUMENTED       CGS
 JV5360  HISTORY     - 1939     GOOD             CGS
 JV5360  HISTORY     - 1956     GOOD             CGS
 JV5360  HISTORY     - 19940719 MARK NOT FOUND   USPSQD
 JV5360
 JV5360                          STATION DESCRIPTION
 JV5360
 JV5360'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5360'ON THE W SHORE OF THE GUNPOWDER RIVER AND ON THE N SHORE OF
 JV5360'SALTPETER CREEK, AND ON THE SE TIP OF BATTERY POINT.  THE STATION
 JV5360'IS ON A SAND BEACH 32 YARDS W OF HIGH WATER AND 16 FEET N OF HIGH
 JV5360'WATER.  THE ONLY NEARBY NATURAL OBJECT IS A 4-INCH THORN TREE.
 JV5360'THE STATION IS 16.1 FEET N OF THIS TREE.
 JV5360'
 JV5360'REFERENCE MARK NO.1 IS 70.23 FEET E OF STATION.
 JV5360'
 JV5360'REFERENCE MARK NO.2 IS 97.37 FEET W OF STATION.  THE STATION AND
 JV5360'REFERENCE MARKS ARE APPROXIMATELY IN LINE IN AN E AND W DIRECTION.
 JV5360'ALL ARE MARKED, AS DESCRIBED IN NOTES 1A AND 11A BY STANDARD DISKS
 JV5360'SET IN 8-INCH SQUARE CONCRETE BLOCKS 36 INCHES DEEP AND SET FLUSH
 JV5360'WITH THE SURFACE OF THE GROUND.  STATION STAMPED BATTERY 1934.
 JV5360'REFERENCE MARKS STAMPED NO.1 1934 AND NO.2 1934.
 JV5360'
 JV5360'BEST APPROACHED BY BOAT, BUT CAN BE REACHED BY PACKING FROM GRACES
 JV5360'QUARTER CLUBHOUSE.
 JV5360
 JV5360                          STATION RECOVERY (1939)
 JV5360
 JV5360'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5360'STATION IS LOCATED NEAR THE SE TIP OF BATTERY POINT, WHICH LIES
 JV5360'BETWEEN THE GUNPOWDER RIVER AND SALTPETER CREEK.  STATION IS 32
 JV5360'METERS W OF THE SE TIP OF THE POINT AND 8 METERS N OF HIGH WATER,
 JV5360'AT THE EDGE OF THE MARSH GRASS AND A NARROW SANDY BEACH.  STATION
 JV5360'IS 16 FEET FROM THE BUTT OF A 4-INCH THORN TREE WHICH IS LEANING
 JV5360'CONSIDERABLY.
 JV5360'
 JV5360'REFERENCE MARK NO.1 IS 70.23 FEET E OF STATION.
 JV5360'
 JV5360'REFERENCE MARK NO.2 IS 97.37 FEET W OF STATION.  THE STATION MARK
 JV5360'AND REFERENCE MARKS ARE APPROXIMATELY IN LINE.
 JV5360'
 JV5360'ALL MARKS ARE STANDARD DISKS SET IN CONCRETE BLOCKS 8 INCHES
 JV5360'SQUARE.  STATION MARK IS STAMPED BATTERY 1934 AND THE REFERENCE
 JV5360'MARKS NO.1, 1934 AND NO.2, 1934.
 JV5360'
 JV5360'STATION IS BEST APPROACHED BY BOAT BUT MAY BE REACHED BY PACKING
 JV5360'FROM GRACES QUARTER CLUBHOUSE DOWN THE GUNPOWDER RIVER SIDE OF THE
 JV5360'POINT.
 JV5360
 JV5360                          STATION RECOVERY (1956)
 JV5360
 JV5360'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (EHK)
 JV5360'STATION MARK AND REFERNCE MARK 1 WERE RECOVERED IN GOOD CONDITION.
 JV5360'THE DISTANCE BETWEEN THESE MARKS WAS MEASURED WITH A STEEL TAPE
 JV5360'AND FOUND TO BE CORRECT.  REFERENCE MARK 2 WAS FOUND IN POOR
 JV5360'CONDITION.  THE MONUMENT IS CRACKED ACROSS ABOUT 8 IN. FROM THE
 JV5360'TOP.  THE ORIGINAL DESCRIPTION IS INADEQUATE.  A NEW DESCRIPTION
 JV5360'FOLLOWS--
 JV5360'
 JV5360'THE STATION IS WITHIN THE MILITARY RESERVATION BOUNDARY OF THE
 JV5360'ARMY CHEMICAL CENTER, ON THE SE TIP OF BATTERY POINT WHICH LIES
 JV5360'BETWEEN GUNPOWDER RIVER AND SALTPETER CREEK.  THIS AREA IS USED AS
 JV5360'A TESTING GROUND FOR POISONOUS GASSES.  THE STATION SITE SHOULD
 JV5360'NOT BE VISITED WITHOUT FIRST OBTAINING CLEARANCE FROM THE RANGE
 JV5360'CONTROL OFFICER AT THE ARMY CHEMICAL CENTER, EDGEWOOD, MARYLAND.
 JV5360'
 JV5360'THE STATION IS ON A SAND BEACH, 30 YD. W OF HIGH WATER, AND 11 FT.
 JV5360'N OF HIGH WATER.  A THORN BUSH IS 3 FT. N OF THE STATION, AND A
 JV5360'25-FT. CREOSOTED POLE IS 6 FT. SE OF THE STATION.  THE STATION IS
 JV5360'MARKED BY A STANDARD TRIANGULATION DISK, STAMPED BATTERY 1934 AND
 JV5360'SET IN THE TOP OF A CONCRETE BLOCK 8 IN. SQUARE PROJECTING 1.5 FT.
 JV5360'ABOVE THE GROUND.
 JV5360'
 JV5360'REFERENCE MARK 1 IS 71.23 FT. E OF THE STATION, IN MARSH GRASS,
 JV5360'AND ABOUT 12 FT. FROM THE HIGH-WATERLINE.  THE REFERENCE MARK IS
 JV5360'MARKED BY A STANDARD REFERENCE-MARK DISK, STAMPED NO 1 1934 AND
 JV5360'SET IN THE TOP OF AN 8-IN. CONCRETE BLOCK PROJECTING 1 FT. ABOVE
 JV5360'THE GROUND.
 JV5360'
 JV5360'REFERENCE MARK 2 IS ON THE HIGH-WATERLINE, AND 97.37 FT. W OF THE
 JV5360'STATION.  THE REFERENCE MARK IS MARKED BY A STANDARD
 JV5360'REFERENCE-MARK DISK, STAMPED NO 2 1934 AND SET IN THE TOP OF AN
 JV5360'8-IN. CONCRETE BLOCK PROJECTING 1.5 FT. ABOVE GROUND.  THE
 JV5360'CONCRETE BLOCK IS CRACKED ACROSS ABOUT 8 IN. FROM THE TOP.
 JV5360'
 JV5360'FROM INFORMATION RECEIVED AT ARMY CHEMICAL CENTER, THE STATION
 JV5360'CAN BE REACHED ONLY BY BOAT.
 JV5360
 JV5360                          STATION RECOVERY (1994)
 JV5360
 JV5360'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5360'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6754 ***********************************************************************
 HV6754  DESIGNATION -  BATTLE MSFC 1908
 HV6754  PID         -  HV6754
 HV6754  STATE/COUNTY-  MD/CALVERT
 HV6754  COUNTRY     -  US
 HV6754  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6754
 HV6754                         *CURRENT SURVEY CONTROL
 HV6754  ______________________________________________________________________
 HV6754* NAD 83(1993) POSITION- 38 26 49.45813(N) 076 36 35.42188(W)   ADJUSTED
 HV6754* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6754  ______________________________________________________________________
 HV6754  GEOID HEIGHT    -        -33.902 (meters)                     GEOID18
 HV6754  LAPLACE CORR    -         -4.91  (seconds)                    DEFLEC18
 HV6754  HORZ ORDER      -  SECOND
 HV6754
 HV6754.The horizontal coordinates were established by classical geodetic methods
 HV6754.and adjusted by the National Geodetic Survey in November 1994.
 HV6754
 HV6754.The orthometric height was scaled from a topographic map.
 HV6754
 HV6754.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6754.GEOID18 height accuracy estimate available here.
 HV6754
 HV6754.Click photographs - Photos may exist for this station.
 HV6754
 HV6754.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6754
 HV6754. The following values were computed from the NAD 83(1993) position.
 HV6754
 HV6754;                    North         East     Units Scale Factor Converg.
 HV6754;SPC MD       -    86,700.928   434,058.815   MT  0.99997767   +0 14 41.6
 HV6754;SPC MD       -   284,451.29  1,424,074.63   sFT  0.99997767   +0 14 41.6
 HV6754;UTM  18      - 4,256,647.767   359,518.528   MT  0.99984304   -1 00 04.1
 HV6754
 HV6754!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6754!SPC MD       -   1.00000536  x   0.99997767  =   0.99998303
 HV6754!UTM  18      -   1.00000536  x   0.99984304  =   0.99984840
 HV6754
 HV6754:                Primary Azimuth Mark                     Grid Az
 HV6754:SPC MD       -  PHOTO MSFC 1908                          130 10 00.8
 HV6754:UTM  18      -  PHOTO MSFC 1908                          131 24 46.5
 HV6754
 HV6754_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5951856647(NAD 83)
 HV6754
 HV6754|---------------------------------------------------------------------|
 HV6754| PID    Reference Object                     Distance      Geod. Az  |
 HV6754|                                                           dddmmss.s |
 HV6754| HV6753 PHOTO MSFC 1908                     APPROX. 2.1 KM 1302442.4 |
 HV6754|---------------------------------------------------------------------|
 HV6754
 HV6754                          SUPERSEDED SURVEY CONTROL
 HV6754
 HV6754  NAD 83(1991)-  38 26 49.45832(N)    076 36 35.42302(W) AD(       ) 2
 HV6754  NAD 83(1986)-  38 26 49.45778(N)    076 36 35.43699(W) AD(       ) 2
 HV6754  NAD 27      -  38 26 49.01100(N)    076 36 36.59500(W) AD(       ) 2
 HV6754  USSD        -  38 26 49.36900(N)    076 36 36.33600(W) AD(       ) 3
 HV6754
 HV6754.Superseded values are not recommended for survey control.
 HV6754
 HV6754.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6754.See file dsdata.pdf to determine how the superseded data were derived.
 HV6754
 HV6754_MARKER: H = DRILL HOLE
 HV6754_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6754_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6754+STABILITY: SURFACE MOTION
 HV6754
 HV6754  HISTORY     - Date     Condition        Report By
 HV6754  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6754  HISTORY     - 1930     GOOD             MDDNR
 HV6754  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6754
 HV6754                          STATION DESCRIPTION
 HV6754
 HV6754'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6754'STATION IS ON THE NE SHORE OF PATUXENT RIVER, ON W SIDE OF
 HV6754'ENTRANCE TO BATTLE CREEK, ON PRISON POINT, ON SAND AND GRASSLAND
 HV6754'BETWEEN MARSH AND RIVER, ABOUT 1 FOOT ABOVE HIGH WATER, 85 YARDS
 HV6754'S OF A FIELD, 6 YARDS NE OF A SHORE, 20 YARDS SW OF A POOL, 100
 HV6754'YARDS SW BY W OF A LONE TREE, 200 YARDS W OF SMALL HOUSE AMONG
 HV6754'TREES, AND 100 YARDS W TO NW OF SEVERAL DWARF TREES BETWEEN HOUSE
 HV6754'AND BEACH.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP
 HV6754'OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6754'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6754'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6754'TOP OF POST.  DISTANCES AND BEARINGS FROM THE STATION TO VARIOUS
 HV6754'POINTS OF REFERENCE ARE AS FOLLOWS--LEFT CORNER OF LEFT CHIMNEY OF
 HV6754'VERY LARGE HOUSE, 2-1/4 MILES, S 5 DEG 19 MIN W.  RIGHT CHIMNEY OF
 HV6754'LARGE 2 1/2-STORY BRICK HOUSE, 1-1/2 MILES, S 78 DEG 43 MIN W.
 HV6754'TANGENT TO SHERIDAN POINT, 2-1/2 MILES, N 53 DEG 57 MIN W.  RIGHT END
 HV6754'OF PEAK OF ROOF OF 2 1/2-STORY HOUSE, 2-1/4 MILES, N 43 DEG 27
 HV6754'MIN W.  CHIMNEY OF 2 1/2-STORY HOUSE ON HILL, 2 MILES, N 27 DEG 58
 HV6754'MIN W.  LONE TREE, 80 YARDS N 71 DEG 24 MIN E. OUTSIDE CHIMNEY OF
 HV6754'HOUSE ON HILL, 3 MILES, N 80 DEG 54 MIN E.  HOUSE AMONG TREES, 100
 HV6754'YARDS, S 81 DEG 2 MIN E.  TANGENT OF LONG MARSH, 1-1/2 MILES, S 21
 HV6754'DEG 32 MIN E.  LEFT CHIMNEY OF 2 1/2-STORY HOUSE, 3 MILES, S 14
 HV6754'DEG 39 MIN E.  CHIMNEY OF 2 1/2-STORY HOUSE, 2 MILES, S 10 DEG 20
 HV6754'MIN E.  RIGHT TANGENT OF FORREST WHARF, 1-1/2 MILES, S 5 DEG 18
 HV6754'MIN E.  CHIMNEY ON MIDDLE OF ROOF OF HOUSE, 2-1/4 MILES, S 1 DEG
 HV6754'25 MIN E.
 HV6754
 HV6754                          STATION RECOVERY (1930)
 HV6754
 HV6754'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6754'STATION RECOVERED AND TRIPOD ERECTED.
 HV6754
 HV6754                          STATION RECOVERY (1943)
 HV6754
 HV6754'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6754'THE LOCALITY WAS VISITED AND A THOROUGH SEARCH WAS MADE.
 HV6754'EVIDENCE OF THE OLD TRIPOD WAS FOUND ABOUT SIX FEET OUT IN THE
 HV6754'WATER BUT NO TRACE OF THE STATION WAS FOUND AND IT IS BELIEVED TO
 HV6754'HAVE WASHED OUT.
 HV6754'
 HV6754'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6209 ***********************************************************************
 HV6209  DESIGNATION -  BATTS
 HV6209  PID         -  HV6209
 HV6209  STATE/COUNTY-  MD/QUEEN ANNES
 HV6209  COUNTRY     -  US
 HV6209  USGS QUAD   -  KENT ISLAND (2016)
 HV6209
 HV6209                         *CURRENT SURVEY CONTROL
 HV6209  ______________________________________________________________________
 HV6209* NAD 83(1991) POSITION- 38 54 40.44511(N) 076 19 07.52991(W)   ADJUSTED
 HV6209* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6209  ______________________________________________________________________
 HV6209  GEOID HEIGHT    -        -33.761 (meters)                     GEOID18
 HV6209  LAPLACE CORR    -         -4.19  (seconds)                    DEFLEC18
 HV6209  HORZ ORDER      -  THIRD
 HV6209
 HV6209.The horizontal coordinates were established by classical geodetic methods
 HV6209.and adjusted by the National Geodetic Survey in January 1992.
 HV6209
 HV6209.The orthometric height was scaled from a topographic map.
 HV6209
 HV6209.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6209.GEOID18 height accuracy estimate available here.
 HV6209
 HV6209.Click photographs - Photos may exist for this station.
 HV6209
 HV6209.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6209
 HV6209. The following values were computed from the NAD 83(1991) position.
 HV6209
 HV6209;                    North         East     Units Scale Factor Converg.
 HV6209;SPC MD       -   138,372.908   459,083.682   MT  0.99995004   +0 25 39.3
 HV6209;SPC MD       -   453,978.45  1,506,177.05   sFT  0.99995004   +0 25 39.3
 HV6209;UTM  18      - 4,307,752.867   385,661.708   MT  0.99976098   -0 49 42.3
 HV6209
 HV6209!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6209!SPC MD       -   1.00000533  x   0.99995004  =   0.99995537
 HV6209!UTM  18      -   1.00000533  x   0.99976098  =   0.99976631
 HV6209
 HV6209:                Primary Azimuth Mark                     Grid Az
 HV6209:SPC MD       -  TURKEY                                   121 10 22.3
 HV6209:UTM  18      -  TURKEY                                   122 25 43.9
 HV6209
 HV6209_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8566107752(NAD 83)
 HV6209
 HV6209|---------------------------------------------------------------------|
 HV6209| PID    Reference Object                     Distance      Geod. Az  |
 HV6209|                                                           dddmmss.s |
 HV6209| HV6175 TOP                                 APPROX. 1.1 KM 0032258.5 |
 HV6209| HV6210 COXES CREEK                          87.701 METERS 07220     |
 HV6209| HV6178 TURKEY                              APPROX. 2.0 KM 1213601.6 |
 HV6209|---------------------------------------------------------------------|
 HV6209
 HV6209                          SUPERSEDED SURVEY CONTROL
 HV6209
 HV6209  NAD 83(1986)-  38 54 40.44117(N)    076 19 07.54245(W) AD(       ) 3
 HV6209  NAD 27      -  38 54 40.02600(N)    076 19 08.74000(W) AD(       ) 3
 HV6209  USSD        -  38 54 40.41800(N)    076 19 08.53200(W) AD(       ) 3
 HV6209
 HV6209.Superseded values are not recommended for survey control.
 HV6209
 HV6209.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6209.See file dsdata.pdf to determine how the superseded data were derived.
 HV6209
 HV6209_MARKER: U = CONCRETE POST
 HV6209_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6209_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6209_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6209
 HV6209  HISTORY     - Date     Condition        Report By
 HV6209  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6209  HISTORY     - 1935     SEE DESCRIPTION  CGS
 HV6209  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6209
 HV6209                          STATION DESCRIPTION
 HV6209
 HV6209'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6209'STATION IS LOCATED ON THE NORTHERN SHORE OF EASTERN BAY, ON
 HV6209'SOUTHERN END OF BATTS NECK, BETWEEN SHIPPING AND COX CREEKS, AND
 HV6209'ABOUT 1-1/4 MILES NW OF TURKEY POINT, IN A CULTIVATED FIELD ABOUT
 HV6209'2 FEET ABOVE HIGH WATER, 21 YARDS N OF SHORE, AND 100 YARDS W OF
 HV6209'A WIRE FENCE EXTENDING 100 YARDS INTO BAY.  STATION MARK IS
 HV6209'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HV6209'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2
 HV6209'FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES.  THE LETTERS
 HV6209'M.S.F.S. AND U.S.F.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6209'SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE BURIED WITH
 HV6209'THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.  STATION COXES
 HV6209'CREEK OF 1899 IS 87.70 METERS (287.7 FEET) FROM STATION
 HV6209'N 72 DEG 20 MIN E.  IT IS MARKED ON THE SURFACE BY A
 HV6209'GRANITE POST WITH TOP DRESSED 6 INCHES SQUARE AND MARKED WITH A
 HV6209'SQUARE CROSS AND THE LETTERS U.S.  OTHER DISTANCES AND BEARINGS
 HV6209'ARE AS FOLLOWS--E GABLE OF HOUSE, 2-1/2 MILES, S 18 DEG 06 MIN W.
 HV6209'NAIL IN BLAZE IN 6-INCH PERSIMMON TREE, 9.76 METERS (32.02
 HV6209'FEET), S 32 DEG 50 MIN W.  S CHIMNEY OF HOUSE, 3/8 MILE, N 36 DEG
 HV6209'18 MIN W.  S CHIMNEY OF HOUSE, 3/4 MILE, N 4 DEG 08 MIN E.  S
 HV6209'GABLE OF BARN, 1-1/2 MILES, N 33 DEG 30 MIN E.  N CHIMNEY OF
 HV6209'HOUSE, 1-3/8 MILES, N 54 DEG 58 MIN E.  N CHIMNEY
 HV6209'OF HOUSE, 1-1/8 MILES, S 77 DEG 17 MIN E.  NAIL IN BLAZE IN ONE
 HV6209'OF TWIN 4-INCH PERSIMMON TREES 3.94 METERS
 HV6209'(12.93 FEET), S 20 DEG 48 MIN E.
 HV6209
 HV6209                          STATION RECOVERY (1935)
 HV6209
 HV6209'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (JCP)
 HV6209'STATION LOST.  THIS STATION MARK, (M.S.F.S. MONUMENT) WAS FINALLY
 HV6209'LOCATED ABOUT 3-1/2 MILES FROM ITS ORIGINAL POSITION AT NORMANS.  IT
 HV6209'IS NOW USED AS A BACK DOOR STEP OF A SHANTY OCCUPIED BY MR. CHARLES
 HV6209'TOLSON.  IT WAS IMPOSSIBLE TO FIND SUBSURFACE MARK AS THE
 HV6209'NEARBY POINTS OF REFERENCE ARE NOW GONE.  IT IS THOUGHT THAT THE
 HV6209'SUBSURFACE MARK MIGHT BE LOCATED WITH THE AID OF A PLANE TABLE.
 HV6209
 HV6209                          STATION RECOVERY (1942)
 HV6209
 HV6209'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (LWS)
 HV6209'STATION MARK SEARCHED FOR BUT NOT FOUND.  BANK HAS WASHED BADLY,
 HV6209'AND STATION MAY HAVE WASHED OR BEEN PLOWED OUT.
 HV6209'
 HV6209'RECOMMENDED THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4694 ***********************************************************************
 AB4694  DESIGNATION -  BAUGHER
 AB4694  PID         -  AB4694
 AB4694  STATE/COUNTY-  MD/CARROLL
 AB4694  COUNTRY     -  US
 AB4694  USGS QUAD   -  NEW WINDSOR (2016)
 AB4694
 AB4694                         *CURRENT SURVEY CONTROL
 AB4694  ______________________________________________________________________
 AB4694* NAD 83(2011) POSITION- 39 36 07.82411(N) 077 03 05.21181(W)   ADJUSTED
 AB4694* NAD 83(2011) ELLIP HT-   182.000 (meters)        (06/27/12)   ADJUSTED
 AB4694* NAD 83(2011) EPOCH   -  2010.00
 AB4694* NAVD 88 ORTHO HEIGHT -   214.5   (meters)      704.    (feet) GPS OBS
 AB4694  ______________________________________________________________________
 AB4694  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4694  GEOID HEIGHT    -        -32.455 (meters)                     GEOID99
 AB4694  GEOID HEIGHT    -        -32.444 (meters)                     GEOID18
 AB4694  NAD 83(2011) X  -  1,102,705.717 (meters)                     COMP
 AB4694  NAD 83(2011) Y  - -4,795,986.744 (meters)                     COMP
 AB4694  NAD 83(2011) Z  -  4,044,166.331 (meters)                     COMP
 AB4694  LAPLACE CORR    -          5.06  (seconds)                    DEFLEC18
 AB4694
 AB4694  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4694  Standards:
 AB4694         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4694            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4694  -------------------------------------------------------------------
 AB4694  NETWORK    1.03   2.39           0.47   0.36   1.22     -0.02997443
 AB4694  -------------------------------------------------------------------
 AB4694  Click here for local accuracies and other accuracy information.
 AB4694
 AB4694.The horizontal coordinates were established by GPS observations
 AB4694.and adjusted by the National Geodetic Survey in June 2012.
 AB4694
 AB4694.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4694.been affixed to the stable North American tectonic plate. See 
 AB4694.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4694
 AB4694.The horizontal coordinates are valid at the epoch date displayed above
 AB4694.which is a decimal equivalence of Year/Month/Day.
 AB4694
 AB4694.The orthometric height was determined by GPS observations and a
 AB4694.high-resolution geoid model.
 AB4694
 AB4694.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4694.GEOID18 height accuracy estimate available here.
 AB4694
 AB4694.Click photographs - Photos may exist for this station.
 AB4694
 AB4694.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4694
 AB4694.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4694
 AB4694.The ellipsoidal height was determined by GPS observations
 AB4694.and is referenced to NAD 83.
 AB4694
 AB4694. The following values were computed from the NAD 83(2011) position.
 AB4694
 AB4694;                    North         East     Units Scale Factor Converg.
 AB4694;SPC MD       -   214,860.277   395,581.158   MT  1.00003017   -0 01 56.2
 AB4694;SPC MD       -   704,920.76  1,297,835.85   sFT  1.00003017   -0 01 56.2
 AB4694;UTM  18      - 4,385,614.316   323,869.943   MT  0.99998194   -1 18 28.9
 AB4694
 AB4694!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4694!SPC MD       -   0.99997145  x   1.00003017  =   1.00000162
 AB4694!UTM  18      -   0.99997145  x   0.99998194  =   0.99995339
 AB4694
 AB4694_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2386985614(NAD 83)
 AB4694
 AB4694|---------------------------------------------------------------------|
 AB4694| PID    Reference Object                     Distance      Geod. Az  |
 AB4694|                                                           dddmmss.s |
 AB4694| AB4719 BAUGHER AZ MK                       363.491 METERS 12723     |
 AB4694|---------------------------------------------------------------------|
 AB4694
 AB4694                          SUPERSEDED SURVEY CONTROL
 AB4694
 AB4694  NAD 83(2007)-  39 36 07.82441(N)    077 03 05.21253(W) AD(2002.00) 0
 AB4694  ELLIP H (02/10/07)  182.021  (m)                       GP(2002.00)    
 AB4694  ELLIP H (08/30/02)  182.019  (m)                       GP(       ) 4 2
 AB4694  NAD 83(1991)-  39 36 07.82386(N)    077 03 05.21318(W) AD(       ) 1
 AB4694  ELLIP H (07/03/96)  181.952  (m)                       GP(       ) 1 1
 AB4694  NAVD 88 (07/03/96)  214.4    (m)  GEOID93  model used  GPS OBS        
 AB4694
 AB4694.Superseded values are not recommended for survey control.
 AB4694
 AB4694.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4694.See file dsdata.pdf to determine how the superseded data were derived.
 AB4694
 AB4694_MARKER: DD = SURVEY DISK
 AB4694_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4694_STAMPING: BAUGHER 1995
 AB4694_MARK LOGO: MD-013
 AB4694_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4694_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4694+STABILITY: SURFACE MOTION
 AB4694_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4694+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4694
 AB4694  HISTORY     - Date     Condition        Report By
 AB4694  HISTORY     - 1995     MONUMENTED       MD-013
 AB4694
 AB4694                          STATION DESCRIPTION
 AB4694
 AB4694'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4694'STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) NORTHWEST OF WESTMINSTER AND
 AB4694'ABOUT 7.5 MI (12.1 KM) SOUTHEAST OF TANEYTOWN. TO REACH STATION FROM
 AB4694'THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 32
 AB4694'(MAIN STREET) IN WESTMINSTER GO WEST ON MD ROUTE 140 FOR 2.1 MI (3.4
 AB4694'KM) TO THE INTERSECTION WITH BAUGHER ROAD AND THE STATION ON THE
 AB4694'RIGHT. STATION IS ON TOP OF A HIGH BANK AT THE EDGE OF AN ORCHARD ON
 AB4694'THE NORTHWEST QUADRANT OF THE INTERSECTION. TO DRIVE TO STATION TURN
 AB4694'RIGHT ON BAUGHER ROAD AND PROCEED NORTH FOR ABOUT 200 FT (61.0 M) THEN
 AB4694'TURN LEFT ON A DIRT ROAD LEADING SOUTH THROUGH THE ORCHARD AND PROCEED
 AB4694'TO A 90 DEGREE BEND TO THE RIGHT AND THE STATION ON THE LEFT. STATION
 AB4694'MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 AB4694'WITH THE GROUND. IT IS 11.5 FT (3.5 M) NORTH OF THE TOP OF THE BANK,
 AB4694'35.0 FT (10.7 M) WEST OF AN 8 IN CHERRY TREE, 19.5 FT (5.9 M)
 AB4694'SOUTHWEST OF TELEPHONE POLE NO. 4 AND 16.0 FT (4.9 M) SOUTHEAST OF THE
 AB4694'CENTERLINE OF THE DIRT LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4719 ***********************************************************************
 AB4719  DESIGNATION -  BAUGHER AZ MK
 AB4719  PID         -  AB4719
 AB4719  STATE/COUNTY-  MD/CARROLL
 AB4719  COUNTRY     -  US
 AB4719  USGS QUAD   -  NEW WINDSOR (2016)
 AB4719
 AB4719                         *CURRENT SURVEY CONTROL
 AB4719  ______________________________________________________________________
 AB4719* NAD 83(2011) POSITION- 39 36 00.66805(N) 077 02 53.10594(W)   ADJUSTED
 AB4719* NAD 83(2011) ELLIP HT-   166.122 (meters)        (06/27/12)   ADJUSTED
 AB4719* NAD 83(2011) EPOCH   -  2010.00
 AB4719* NAVD 88 ORTHO HEIGHT -   198.6   (meters)      652.    (feet) GPS OBS
 AB4719  ______________________________________________________________________
 AB4719  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4719  GEOID HEIGHT    -        -32.440 (meters)                     GEOID99
 AB4719  GEOID HEIGHT    -        -32.429 (meters)                     GEOID18
 AB4719  NAD 83(2011) X  -  1,103,015.986 (meters)                     COMP
 AB4719  NAD 83(2011) Y  - -4,796,047.201 (meters)                     COMP
 AB4719  NAD 83(2011) Z  -  4,043,986.157 (meters)                     COMP
 AB4719  LAPLACE CORR    -          4.98  (seconds)                    DEFLEC18
 AB4719
 AB4719  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4719  Standards:
 AB4719         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4719            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4719  -------------------------------------------------------------------
 AB4719  NETWORK    1.06   2.45           0.48   0.37   1.25      0.00302402
 AB4719  -------------------------------------------------------------------
 AB4719  Click here for local accuracies and other accuracy information.
 AB4719
 AB4719.The horizontal coordinates were established by GPS observations
 AB4719.and adjusted by the National Geodetic Survey in June 2012.
 AB4719
 AB4719.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4719.been affixed to the stable North American tectonic plate. See 
 AB4719.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4719
 AB4719.The horizontal coordinates are valid at the epoch date displayed above
 AB4719.which is a decimal equivalence of Year/Month/Day.
 AB4719
 AB4719.The orthometric height was determined by GPS observations and a
 AB4719.high-resolution geoid model.
 AB4719
 AB4719.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4719.GEOID18 height accuracy estimate available here.
 AB4719
 AB4719.Click photographs - Photos may exist for this station.
 AB4719
 AB4719.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4719
 AB4719.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4719
 AB4719.The ellipsoidal height was determined by GPS observations
 AB4719.and is referenced to NAD 83.
 AB4719
 AB4719. The following values were computed from the NAD 83(2011) position.
 AB4719
 AB4719;                    North         East     Units Scale Factor Converg.
 AB4719;SPC MD       -   214,639.414   395,869.868   MT  1.00002973   -0 01 48.6
 AB4719;SPC MD       -   704,196.14  1,298,783.06   sFT  1.00002973   -0 01 48.6
 AB4719;UTM  18      - 4,385,387.091   324,153.650   MT  0.99998072   -1 18 21.0
 AB4719
 AB4719!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4719!SPC MD       -   0.99997394  x   1.00002973  =   1.00000367
 AB4719!UTM  18      -   0.99997394  x   0.99998072  =   0.99995466
 AB4719
 AB4719_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2415385387(NAD 83)
 AB4719
 AB4719|---------------------------------------------------------------------|
 AB4719| PID    Reference Object                     Distance      Geod. Az  |
 AB4719|                                                           dddmmss.s |
 AB4719| AB4694 BAUGHER                             363.491 METERS 30723     |
 AB4719|---------------------------------------------------------------------|
 AB4719
 AB4719                          SUPERSEDED SURVEY CONTROL
 AB4719
 AB4719  NAD 83(2007)-  39 36 00.66836(N)    077 02 53.10666(W) AD(2002.00) 0
 AB4719  ELLIP H (02/10/07)  166.144  (m)                       GP(2002.00)    
 AB4719  ELLIP H (08/30/02)  166.139  (m)                       GP(       ) 4 2
 AB4719  NAD 83(1991)-  39 36 00.66780(N)    077 02 53.10729(W) AD(       ) 1
 AB4719  ELLIP H (07/03/96)  166.074  (m)                       GP(       ) 1 1
 AB4719  NAVD 88 (07/03/96)  198.5    (m)  GEOID93  model used  GPS OBS        
 AB4719
 AB4719.Superseded values are not recommended for survey control.
 AB4719
 AB4719.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4719.See file dsdata.pdf to determine how the superseded data were derived.
 AB4719
 AB4719_MARKER: DD = SURVEY DISK
 AB4719_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4719_STAMPING: BAUGHER AZIMUTH 1995
 AB4719_MARK LOGO: MD-013
 AB4719_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4719_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4719+STABILITY: SURFACE MOTION
 AB4719_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4719+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4719
 AB4719  HISTORY     - Date     Condition        Report By
 AB4719  HISTORY     - 1995     MONUMENTED       MD-013
 AB4719  HISTORY     - 20080901 GOOD             GEOCAC
 AB4719
 AB4719                          STATION DESCRIPTION
 AB4719
 AB4719'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4719'STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) NORTHWEST OF WESTMINSTER AND
 AB4719'ABOUT 8.0 MI (12.9 KM) SOUTHEAST OF TANEYTOWN. TO REACH STATION FROM
 AB4719'THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 32
 AB4719'(MAIN STREET) WEST OF WESTMINSTER GO WEST ON MD ROUTE 140 FOR ABOUT
 AB4719'1.8 MI (2.9 KM) TO STATION ON THE LEFT. STATION IS ALSO 0.2 MI (0.3
 AB4719'KM) EAST OF THE INTERSECTION OF MD ROUTE 140 AND BAUGHER ROAD. STATION
 AB4719'MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 AB4719'WITH THE GROUND. IT IS 30.3 FT (9.2 M) SOUTHWEST OF THE CENTERLINE OF
 AB4719'THE ROAD AND 41.0 FT (12.5 M) SOUTHEAST OF A SEEDING AREA SIGN.
 AB4719
 AB4719                          STATION RECOVERY (2008)
 AB4719
 AB4719'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 AB4719'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5475 ***********************************************************************
 JV5475  DESIGNATION -  BAUGHS USE 1916
 JV5475  PID         -  JV5475
 JV5475  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5475  COUNTRY     -  US
 JV5475  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5475
 JV5475                         *CURRENT SURVEY CONTROL
 JV5475  ______________________________________________________________________
 JV5475* NAD 83(1991) POSITION- 39 15 33.54861(N) 076 34 07.77294(W)   ADJUSTED
 JV5475* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5475  ______________________________________________________________________
 JV5475  GEOID HEIGHT    -        -32.882 (meters)                     GEOID18
 JV5475  LAPLACE CORR    -         -4.08  (seconds)                    DEFLEC18
 JV5475  HORZ ORDER      -  THIRD
 JV5475
 JV5475.The horizontal coordinates were established by classical geodetic methods
 JV5475.and adjusted by the National Geodetic Survey in January 1992.
 JV5475
 JV5475.The orthometric height was scaled from a topographic map.
 JV5475
 JV5475.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5475.GEOID18 height accuracy estimate available here.
 JV5475
 JV5475.Click photographs - Photos may exist for this station.
 JV5475
 JV5475.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5475
 JV5475. The following values were computed from the NAD 83(1991) position.
 JV5475
 JV5475;                    North         East     Units Scale Factor Converg.
 JV5475;SPC MD       -   176,882.025   437,213.174   MT  0.99997220   +0 16 14.2
 JV5475;SPC MD       -   580,320.44  1,434,423.56   sFT  0.99997220   +0 16 14.2
 JV5475;UTM  18      - 4,346,726.982   364,646.481   MT  0.99982558   -0 59 34.6
 JV5475
 JV5475!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5475!SPC MD       -   1.00000504  x   0.99997220  =   0.99997724
 JV5475!UTM  18      -   1.00000504  x   0.99982558  =   0.99983062
 JV5475
 JV5475:                Primary Azimuth Mark                     Grid Az
 JV5475:SPC MD       -  F S ROYSTER 1915                         178 13 54.4
 JV5475:UTM  18      -  F S ROYSTER 1915                         179 29 43.2
 JV5475
 JV5475_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6464646726(NAD 83)
 JV5475
 JV5475|---------------------------------------------------------------------|
 JV5475| PID    Reference Object                     Distance      Geod. Az  |
 JV5475|                                                           dddmmss.s |
 JV5475| JV5726 F S ROYSTER 1915                    APPROX. 2.1 KM 1783008.6 |
 JV5475|---------------------------------------------------------------------|
 JV5475
 JV5475                          SUPERSEDED SURVEY CONTROL
 JV5475
 JV5475  NAD 83(1986)-  39 15 33.54489(N)    076 34 07.78203(W) AD(       ) 3
 JV5475  NAD 27      -  39 15 33.15500(N)    076 34 08.90400(W) AD(       ) 3
 JV5475  USSD        -  39 15 33.52100(N)    076 34 08.74100(W) AD(       ) 3
 JV5475
 JV5475.Superseded values are not recommended for survey control.
 JV5475
 JV5475.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5475.See file dsdata.pdf to determine how the superseded data were derived.
 JV5475
 JV5475
 JV5475  HISTORY     - Date     Condition        Report By
 JV5475  HISTORY     - 1916     MONUMENTED       CGS
 JV5475  HISTORY     - 1924     GOOD             CGS
 JV5475  HISTORY     - 1934     GOOD             CGS
 JV5475  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV5475
 JV5475                          STATION DESCRIPTION
 JV5475
 JV5475'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5475'NE OF FORT MC HENRY CHANNEL, NEAR THE S END OF CLINTON STREET, IN
 JV5475'A SOLID FILL, 1.66 METERS (5.43 FEET) E OF THE CORNER OF SAME,
 JV5475'3.79 METERS (12.45 FEET) NW FROM AN ANGLE IN THE PIER S OF THE
 JV5475'END OF THE W RAILROAD TRACK.  THE STATION IS MARKED BY A CONCRETE
 JV5475'MONUMENT CENTERED BY A STANDARD U.S.E. BRONZE MARKER.
 JV5475
 JV5475                          STATION RECOVERY (1934)
 JV5475
 JV5475'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5475'STATION FOUND IN GOOD CONDITION.  DESCRIPTION INADEQUATE.  IT IS
 JV5475'LOCATED ON THE MOST EASTERLY PIER BELONGING TO BAUGH FERTILIZER
 JV5475'COMPANY.  AT THE PRESENT TIME THE STATION IS COVERED WITH ABOUT
 JV5475'8 INCHES OF DIRT FILL BUT CAN EASILY BE RECOVERED.
 JV5475
 JV5475                          STATION RECOVERY (1975)
 JV5475
 JV5475'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5475'STATION NOT FOUND, AREA COVERED BY ASPHALT.  STATION IS PROBABLY
 JV5475'COVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4730 ***********************************************************************
 AB4730  DESIGNATION -  BAUM
 AB4730  PID         -  AB4730
 AB4730  STATE/COUNTY-  MD/CARROLL
 AB4730  COUNTRY     -  US
 AB4730  USGS QUAD   -  TANEYTOWN (2016)
 AB4730
 AB4730                         *CURRENT SURVEY CONTROL
 AB4730  ______________________________________________________________________
 AB4730* NAD 83(2011) POSITION- 39 39 28.71792(N) 077 14 49.87820(W)   ADJUSTED
 AB4730* NAD 83(2011) ELLIP HT-   101.261 (meters)        (06/27/12)   ADJUSTED
 AB4730* NAD 83(2011) EPOCH   -  2010.00
 AB4730* NAVD 88 ORTHO HEIGHT -   134.4   (meters)      441.    (feet) GPS OBS
 AB4730  ______________________________________________________________________
 AB4730  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4730  GEOID HEIGHT    -        -33.093 (meters)                     GEOID99
 AB4730  GEOID HEIGHT    -        -33.103 (meters)                     GEOID18
 AB4730  NAD 83(2011) X  -  1,085,428.598 (meters)                     COMP
 AB4730  NAD 83(2011) Y  - -4,795,810.862 (meters)                     COMP
 AB4730  NAD 83(2011) Z  -  4,048,886.783 (meters)                     COMP
 AB4730  LAPLACE CORR    -          3.65  (seconds)                    DEFLEC18
 AB4730
 AB4730  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4730  Standards:
 AB4730         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4730            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4730  -------------------------------------------------------------------
 AB4730  NETWORK    0.94   4.59           0.43   0.32   2.34     -0.01434943
 AB4730  -------------------------------------------------------------------
 AB4730  Click here for local accuracies and other accuracy information.
 AB4730
 AB4730.The horizontal coordinates were established by GPS observations
 AB4730.and adjusted by the National Geodetic Survey in June 2012.
 AB4730
 AB4730.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4730.been affixed to the stable North American tectonic plate. See 
 AB4730.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4730
 AB4730.The horizontal coordinates are valid at the epoch date displayed above
 AB4730.which is a decimal equivalence of Year/Month/Day.
 AB4730
 AB4730.The orthometric height was determined by GPS observations and a
 AB4730.high-resolution geoid model.
 AB4730
 AB4730.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4730.GEOID18 height accuracy estimate available here.
 AB4730
 AB4730.Click photographs - Photos may exist for this station.
 AB4730
 AB4730.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4730
 AB4730.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4730
 AB4730.The ellipsoidal height was determined by GPS observations
 AB4730.and is referenced to NAD 83.
 AB4730
 AB4730. The following values were computed from the NAD 83(2011) position.
 AB4730
 AB4730;                    North         East     Units Scale Factor Converg.
 AB4730;SPC MD       -   221,083.742   378,785.808   MT  1.00004301   -0 09 18.5
 AB4730;SPC MD       -   725,338.91  1,242,733.11   sFT  1.00004301   -0 09 18.5
 AB4730;UTM  18      - 4,392,210.590   307,217.815   MT  1.00005758   -1 26 04.6
 AB4730
 AB4730!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4730!SPC MD       -   0.99998411  x   1.00004301  =   1.00002712
 AB4730!UTM  18      -   0.99998411  x   1.00005758  =   1.00004169
 AB4730
 AB4730_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0721792210(NAD 83)
 AB4730
 AB4730                          SUPERSEDED SURVEY CONTROL
 AB4730
 AB4730  NAD 83(2007)-  39 39 28.71795(N)    077 14 49.87914(W) AD(2002.00) 0
 AB4730  ELLIP H (02/10/07)  101.253  (m)                       GP(2002.00)    
 AB4730  ELLIP H (08/30/02)  101.280  (m)                       GP(       ) 4 2
 AB4730  NAD 83(1991)-  39 39 28.71764(N)    077 14 49.87890(W) AD(       ) 1
 AB4730  ELLIP H (07/03/96)  101.247  (m)                       GP(       ) 1 1
 AB4730  NAVD 88 (07/03/96)  134.4    (m)  GEOID93  model used  GPS OBS        
 AB4730
 AB4730.Superseded values are not recommended for survey control.
 AB4730
 AB4730.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4730.See file dsdata.pdf to determine how the superseded data were derived.
 AB4730
 AB4730_MARKER: DD = SURVEY DISK
 AB4730_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4730_STAMPING: BAUM 1995
 AB4730_MARK LOGO: MD-013
 AB4730_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4730_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4730+STABILITY: SURFACE MOTION
 AB4730_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4730+SATELLITE: SATELLITE OBSERVATIONS - November 10, 2005
 AB4730
 AB4730  HISTORY     - Date     Condition        Report By
 AB4730  HISTORY     - 1995     MONUMENTED       MD-013
 AB4730  HISTORY     - 20051110 GOOD             INDIV
 AB4730
 AB4730                          STATION DESCRIPTION
 AB4730
 AB4730'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4730'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) WEST OF TANEYTOWN. TO REACH
 AB4730'STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD
 AB4730'ROUTE 194 (FRANCIS SCOTT KEY HIGHWAY) IN TANEYTOWN, GO WEST ON MD
 AB4730'ROUTE 140 FOR 2.9 MI (4.7 KM) TO THE INTERSECTION WITH BULLFROG ROAD.
 AB4730'TURN LEFT ON BULLFROG ROAD AND GO SOUTH ON BULLFROG ROAD FOR ABOUT 2.0
 AB4730'MI (3.2 KM) TO THE INTERSECTION WITH BAUMGARDNER ROAD. TURN LEFT ON
 AB4730'BAUMGARDNER ROAD AND GO SOUTHEAST FOR 480 FT (146.3 M) TO THE STATION
 AB4730'ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AB4730'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 19 FT (5.8 M)
 AB4730'SOUTHWEST OF THE CENTERLINE OF THE ROAD, 7.0 FT (2.1 M) NORTHEAST OF A
 AB4730'FENCELINE AND 57.5 FT (17.5 M) NORTH OF POWER POLE NO.F-27454.
 AB4730
 AB4730                          STATION RECOVERY (2005)
 AB4730
 AB4730'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2005 (JFP)
 AB4730'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4705 ***********************************************************************
 AB4705  DESIGNATION -  BAUM AZ MK
 AB4705  PID         -  AB4705
 AB4705  STATE/COUNTY-  MD/CARROLL
 AB4705  COUNTRY     -  US
 AB4705  USGS QUAD   -  TANEYTOWN (2016)
 AB4705
 AB4705                         *CURRENT SURVEY CONTROL
 AB4705  ______________________________________________________________________
 AB4705* NAD 83(2011) POSITION- 39 38 38.75210(N) 077 14 41.61187(W)   ADJUSTED
 AB4705* NAD 83(2011) ELLIP HT-   118.446 (meters)        (06/27/12)   ADJUSTED
 AB4705* NAD 83(2011) EPOCH   -  2010.00
 AB4705* NAVD 88 ORTHO HEIGHT -   151.5   (meters)      497.    (feet) GPS OBS
 AB4705  ______________________________________________________________________
 AB4705  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4705  GEOID HEIGHT    -        -33.043 (meters)                     GEOID99
 AB4705  GEOID HEIGHT    -        -33.049 (meters)                     GEOID18
 AB4705  NAD 83(2011) X  -  1,085,840.824 (meters)                     COMP
 AB4705  NAD 83(2011) Y  - -4,796,739.342 (meters)                     COMP
 AB4705  NAD 83(2011) Z  -  4,047,711.242 (meters)                     COMP
 AB4705  LAPLACE CORR    -          3.87  (seconds)                    DEFLEC18
 AB4705
 AB4705  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4705  Standards:
 AB4705         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4705            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4705  -------------------------------------------------------------------
 AB4705  NETWORK    1.18   3.82           0.52   0.42   1.95     -0.27561695
 AB4705  -------------------------------------------------------------------
 AB4705  Click here for local accuracies and other accuracy information.
 AB4705
 AB4705.The horizontal coordinates were established by GPS observations
 AB4705.and adjusted by the National Geodetic Survey in June 2012.
 AB4705
 AB4705.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4705.been affixed to the stable North American tectonic plate. See 
 AB4705.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4705
 AB4705.The horizontal coordinates are valid at the epoch date displayed above
 AB4705.which is a decimal equivalence of Year/Month/Day.
 AB4705
 AB4705.The orthometric height was determined by GPS observations and a
 AB4705.high-resolution geoid model.
 AB4705
 AB4705.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4705.GEOID18 height accuracy estimate available here.
 AB4705
 AB4705.Click photographs - Photos may exist for this station.
 AB4705
 AB4705.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4705
 AB4705.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4705
 AB4705.The ellipsoidal height was determined by GPS observations
 AB4705.and is referenced to NAD 83.
 AB4705
 AB4705. The following values were computed from the NAD 83(2011) position.
 AB4705
 AB4705;                    North         East     Units Scale Factor Converg.
 AB4705;SPC MD       -   219,542.152   378,978.738   MT  1.00003972   -0 09 13.3
 AB4705;SPC MD       -   720,281.21  1,243,366.08   sFT  1.00003972   -0 09 13.3
 AB4705;UTM  18      - 4,390,665.053   307,376.284   MT  1.00005683   -1 25 57.8
 AB4705
 AB4705!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4705!SPC MD       -   0.99998142  x   1.00003972  =   1.00002114
 AB4705!UTM  18      -   0.99998142  x   1.00005683  =   1.00003825
 AB4705
 AB4705_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0737690665(NAD 83)
 AB4705
 AB4705                          SUPERSEDED SURVEY CONTROL
 AB4705
 AB4705  NAD 83(2007)-  39 38 38.75313(N)    077 14 41.61232(W) AD(2002.00) 0
 AB4705  ELLIP H (02/10/07)  118.451  (m)                       GP(2002.00)    
 AB4705  ELLIP H (08/30/02)  118.451  (m)                       GP(       ) 4 2
 AB4705  NAD 83(1991)-  39 38 38.75281(N)    077 14 41.61203(W) AD(       ) 1
 AB4705  ELLIP H (07/03/96)  118.413  (m)                       GP(       ) 1 1
 AB4705  NAVD 88 (07/03/96)  151.5    (m)  GEOID93  model used  GPS OBS        
 AB4705
 AB4705.Superseded values are not recommended for survey control.
 AB4705
 AB4705.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4705.See file dsdata.pdf to determine how the superseded data were derived.
 AB4705
 AB4705_MARKER: DD = SURVEY DISK
 AB4705_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4705_STAMPING: BAUM AZI 1995
 AB4705_MARK LOGO: MD-013
 AB4705_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4705_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4705+STABILITY: SURFACE MOTION
 AB4705_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4705+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4705
 AB4705  HISTORY     - Date     Condition        Report By
 AB4705  HISTORY     - 1995     MONUMENTED       MD-013
 AB4705
 AB4705                          STATION DESCRIPTION
 AB4705
 AB4705'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4705'STATION IS LOCATED ABOUT 4 MI (6.4 KM) SOUTHWEST OF TANEYTOWN AND
 AB4705'ABOUT 6 MI (9.7 KM) NORTHWEST OF UNION BRIDGE. TO REACH STATION FROM
 AB4705'THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 194
 AB4705'(FRANCIS SCOTT KEY HIGHWAY) AT TANEYTOWN GO SOUTH ON MD ROUTE 194 FOR
 AB4705'1.8 MI (2.9 KM) TO THE INTERSECTION WITH KEYSVILLE ROAD. TURN RIGHT
 AB4705'AND GO SOUTHWEST ON KEYSVILLE ROAD FOR 2.4 MI (3.9 KM) TO A 90 DEGREE
 AB4705'CURVE TO THE LEFT AND THE STATION ON THE RIGHT. STATION MARK IS SET IN
 AB4705'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4705'GROUND. IT IS 17.0 FT (5.2 M) WEST OF THE CENTERLINE OF THE ROAD, 37.8
 AB4705'FT (11.5 M) SOUTH OF THE CENTERLINE OF A DIRT ROAD LEADING WEST, 48.0
 AB4705'FT (14.6 M) SOUTH OF POWER POLE NO.U-1197 AND 122.0 FT (37.2 M) NORTH
 AB4705'OF POWER POLE NO.U-1196.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5813 ***********************************************************************
 JV5813  DESIGNATION -  BAVOR
 JV5813  PID         -  JV5813
 JV5813  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5813  COUNTRY     -  US
 JV5813  USGS QUAD   -  RELAY (2016)
 JV5813
 JV5813                         *CURRENT SURVEY CONTROL
 JV5813  ______________________________________________________________________
 JV5813* NAD 83(1991) POSITION- 39 12 31.39642(N) 076 40 35.74398(W)   ADJUSTED
 JV5813* NAVD 88 ORTHO HEIGHT -    55.    (meters)      180.    (feet) SCALED
 JV5813  ______________________________________________________________________
 JV5813  GEOID HEIGHT    -        -32.646 (meters)                     GEOID18
 JV5813  LAPLACE CORR    -         -5.53  (seconds)                    DEFLEC18
 JV5813  HORZ ORDER      -  THIRD
 JV5813
 JV5813.The horizontal coordinates were established by classical geodetic methods
 JV5813.and adjusted by the National Geodetic Survey in January 1992.
 JV5813
 JV5813.The orthometric height was scaled from a topographic map.
 JV5813
 JV5813.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5813.GEOID18 height accuracy estimate available here.
 JV5813
 JV5813.Click photographs - Photos may exist for this station.
 JV5813
 JV5813.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5813
 JV5813. The following values were computed from the NAD 83(1991) position.
 JV5813
 JV5813;                    North         East     Units Scale Factor Converg.
 JV5813;SPC MD       -   171,226.423   427,931.881   MT  0.99996669   +0 12 10.7
 JV5813;SPC MD       -   561,765.36  1,403,973.18   sFT  0.99996669   +0 12 10.7
 JV5813;UTM  18      - 4,341,278.076   355,243.956   MT  0.99985801   -1 03 36.1
 JV5813
 JV5813!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5813!SPC MD       -   0.99999653  x   0.99996669  =   0.99996322
 JV5813!UTM  18      -   0.99999653  x   0.99985801  =   0.99985454
 JV5813
 JV5813:                Primary Azimuth Mark                     Grid Az
 JV5813:SPC MD       -  BAVOR AZ MK                              246 01 36.7
 JV5813:UTM  18      -  BAVOR AZ MK                              247 17 23.5
 JV5813
 JV5813_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5524341278(NAD 83)
 JV5813
 JV5813|---------------------------------------------------------------------|
 JV5813| PID    Reference Object                     Distance      Geod. Az  |
 JV5813|                                                           dddmmss.s |
 JV5813| CA9959 BAVOR RM 1                           10.500 METERS 17633     |
 JV5813| CA9958 BAVOR AZ MK                                        2461347.4 |
 JV5813| CA9960 BAVOR RM 2                            7.836 METERS 27542     |
 JV5813| JV5816 BALTIMORE KAISER ALUM CORP STK      APPROX. 2.5 KM 3412824.6 |
 JV5813|---------------------------------------------------------------------|
 JV5813
 JV5813                          SUPERSEDED SURVEY CONTROL
 JV5813
 JV5813  NAD 83(1986)-  39 12 31.39352(N)    076 40 35.75339(W) AD(       ) 3
 JV5813  NAD 27      -  39 12 31.00620(N)    076 40 36.86530(W) AD(       ) 3
 JV5813
 JV5813.Superseded values are not recommended for survey control.
 JV5813
 JV5813.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5813.See file dsdata.pdf to determine how the superseded data were derived.
 JV5813
 JV5813_MARKER: DS = TRIANGULATION STATION DISK
 JV5813_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5813
 JV5813  HISTORY     - Date     Condition        Report By
 JV5813  HISTORY     - 1957     MONUMENTED       CGS
 JV5813
 JV5813                          STATION DESCRIPTION
 JV5813
 JV5813'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5813'THE STATION IS LOCATED AT THE SITE OF THE VOR, ABOUT 6.5 MILES
 JV5813'SOUTH-SOUTHWEST OF THE CENTER OF DOWNTOWN BALTIMORE, ABOUT 2.0
 JV5813'MILES NORTH OF THE BALTIMORE FRIENDSHIP INTERNATIONAL AIRPORT AND
 JV5813'0.25 MILE SOUTH OF WASHINGTON INTERNATIONAL PARKWAY.  IT IS 40
 JV5813'FEET NORTHEAST OF NORTHEAST CORNER OF VOR, 3 FEET SOUTH OF NORTH
 JV5813'FENCE LINE, 3 FEET WEST OF EAST FENCE LINE.  THE MARK PROJECTS
 JV5813'ABOUT 2 INCHES AND THE DISK IS STAMPED BAVOR 1957.
 JV5813'
 JV5813'R.M. NO 1 IS 32 FEET EAST-SOUTHEAST OF THE NORTHEAST CORNER OF
 JV5813'VOR AND 2 FEET WEST OF FENCE LINE.  THE MARK PROJECTS ABOUT 3
 JV5813'INCHES AND THE DISK IS STAMPED BAVOR NO 1 1957.
 JV5813'
 JV5813'R.M. NO 2 IS 1 FOOT SOUTH OF FENCE LINE AND 30 FEET NORTH OF
 JV5813'NORTHEAST CORNER OF VOR.  THE MARK PROJECTS ABOUT 4 INCHES AND
 JV5813'THE DISK IS STAMPED BAVOR NO 2 1957.
 JV5813'
 JV5813'THE AZIMUTH MARK IS 14 FEET WEST-SOUTHWEST OF CENTERLINE OF
 JV5813'BLACK TOP ROAD AND 2 FEET SOUTH-SOUTHWEST OF WHITE WITNESS
 JV5813'POST.  THE MARK PROJECTS ABOUT 3 INCHES AND THE DISK IS STAMPED
 JV5813'BAVOR 1957.
 JV5813'
 JV5813'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO.1 AND STATE HIGHWAY
 JV5813'NO.176 (ABOUT 10-1/2 MILES SOUTHWEST OF BALTIMORE) GO EAST ON
 JV5813'STATE HIGHWAY 176 FOR 1.85 MILES TO UNDER PASS, PASS UNDER PARKWAY,
 JV5813'KEEP RIGHT ONTO BALTIMORE PARKWAY AND GO NORTHEAST ON PARKWAY
 JV5813'FOR 2.9 MILES, KEEP RIGHT AND GO EASTERLY ON AIRPORT ROAD FOR
 JV5813'1.0 MILE TO JUNCTION OF STATE HIGHWAY 170, TURN RIGHT AND PASS
 JV5813'UNDER THE AIRPORT ROAD AND GO NORTHEAST ON STATE HIGHWAY 170
 JV5813'FOR 0.4 MILE TO SIDE ROAD LEFT AND SIGN ON RIGHT BATTERY B 35TH
 JV5813'AAA BTN.  TURN SHARP LEFT AND GO NORTHWEST FOR 0.6 MILE TO
 JV5813'FORKS, TAKE RIGHT AND GO NORTH FOR 0.4 MILE TO T
 JV5813'INTERSECTION, TURN LEFT AND GO WEST AND NORTH FOR 0.5 MILE TO
 JV5813'AZIMUTH MARK ON LEFT.  CONTINUE AHEAD 0.1 MILE TO
 JV5813'SIDE ROAD RIGHT, TURN RIGHT AND GO EAST FOR 0.1 MILE TO VOR AND
 JV5813'STATION AS DESCRIBED.
 JV5813'
 JV5813'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1630 ***********************************************************************
 JU1630  DESIGNATION -  BAY
 JU1630  PID         -  JU1630
 JU1630  STATE/COUNTY-  MD/CECIL
 JU1630  COUNTRY     -  US
 JU1630  USGS QUAD   -  BAY VIEW (2016)
 JU1630
 JU1630                         *CURRENT SURVEY CONTROL
 JU1630  ______________________________________________________________________
 JU1630* NAD 83(1991) POSITION- 39 37 59.26216(N) 075 57 32.50048(W)   ADJUSTED
 JU1630* NAVD 88 ORTHO HEIGHT -   104.727 (meters)      343.59  (feet) ADJUSTED
 JU1630  ______________________________________________________________________
 JU1630  GEOID HEIGHT    -        -33.093 (meters)                     GEOID18
 JU1630  LAPLACE CORR    -         -1.17  (seconds)                    DEFLEC18
 JU1630  DYNAMIC HEIGHT  -        104.676 (meters)      343.42  (feet) COMP
 JU1630  MODELED GRAVITY -    980,130.8   (mgal)                       NAVD 88
 JU1630
 JU1630  HORZ ORDER      -  SECOND
 JU1630  VERT ORDER      -  SECOND    CLASS 0
 JU1630
 JU1630.The horizontal coordinates were established by classical geodetic methods
 JU1630.and adjusted by the National Geodetic Survey in January 1992.
 JU1630
 JU1630.The orthometric height was determined by differential leveling and
 JU1630.adjusted by the NATIONAL GEODETIC SURVEY
 JU1630.in June 1991.
 JU1630
 JU1630.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1630.GEOID18 height accuracy estimate available here.
 JU1630
 JU1630.Click photographs - Photos may exist for this station.
 JU1630
 JU1630.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU1630
 JU1630.The dynamic height is computed by dividing the NAVD 88
 JU1630.geopotential number by the normal gravity value computed on the
 JU1630.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1630.degrees latitude (g = 980.6199 gals.).
 JU1630
 JU1630.The modeled gravity was interpolated from observed gravity values.
 JU1630
 JU1630. The following values were computed from the NAD 83(1991) position.
 JU1630
 JU1630;                    North         East     Units Scale Factor Converg.
 JU1630;SPC MD       -   218,805.540   489,367.899   MT  1.00003717   +0 39 12.1
 JU1630;SPC MD       -   717,864.51  1,605,534.52   sFT  1.00003717   +0 39 12.1
 JU1630;UTM  18      - 4,387,478.718   417,700.528   MT  0.99968339   -0 36 42.4
 JU1630
 JU1630!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU1630!SPC MD       -   0.99998876  x   1.00003717  =   1.00002593
 JU1630!UTM  18      -   0.99998876  x   0.99968339  =   0.99967216
 JU1630
 JU1630:                Primary Azimuth Mark                     Grid Az
 JU1630:SPC MD       -  BAY AZ MK                                350 00 45.9
 JU1630:UTM  18      -  BAY AZ MK                                351 16 40.4
 JU1630
 JU1630_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1770087478(NAD 83)
 JU1630
 JU1630|---------------------------------------------------------------------|
 JU1630| PID    Reference Object                     Distance      Geod. Az  |
 JU1630|                                                           dddmmss.s |
 JU1630| JU1629 BAY RM 1                             24.345 METERS 04154     |
 JU1630| JU3954 NORTH EAST MICROWAVE TOWER          APPROX. 8.3 KM 1622152.0 |
 JU1630| JU1631 BAY RM 2                              7.855 METERS 17746     |
 JU1630| JU3948 NORTH EAST HARBISON WALKER TK       APPROX. 2.6 KM 2265013.6 |
 JU1630| CB1239 BAY AZ MK                                          3503958.0 |
 JU1630|---------------------------------------------------------------------|
 JU1630
 JU1630                          SUPERSEDED SURVEY CONTROL
 JU1630
 JU1630  NAD 83(1986)-  39 37 59.25619(N)    075 57 32.50635(W) AD(       ) 2
 JU1630  NAD 27      -  39 37 58.86530(N)    075 57 33.71090(W) AD(       ) 2
 JU1630  NGVD 29             105.04   (m)          344.6    (f) LEVELING    3  
 JU1630  NGVD 29 (11/26/84)  105.037  (m)          344.61   (f) ADJUSTED    2 0
 JU1630
 JU1630.Superseded values are not recommended for survey control.
 JU1630
 JU1630.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1630.See file dsdata.pdf to determine how the superseded data were derived.
 JU1630
 JU1630_MARKER: DS = TRIANGULATION STATION DISK
 JU1630_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1630_STAMPING: BAY 1958
 JU1630_MARK LOGO: CGS
 JU1630_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1630+STABILITY: SURFACE MOTION
 JU1630
 JU1630  HISTORY     - Date     Condition        Report By
 JU1630  HISTORY     - 1958     MONUMENTED       CGS
 JU1630  HISTORY     - 1964     GOOD             CGS
 JU1630  HISTORY     - 1971     MARK NOT FOUND   MDDT
 JU1630
 JU1630                          STATION DESCRIPTION
 JU1630
 JU1630'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU1630'STATION IS LOCATED ALONG THE WEST SIDE OF STATE HIGHWAY NO. 272
 JU1630'ABOUT 2-1/4 MILES NORTH-NORTHWEST OF NORTH EAST, BETWEEN STONY
 JU1630'CREEK AND NORTH EAST CREEK, AND ON SMALL KNOLL THAT EXTENDS OUT
 JU1630'INTO GRAVEL PIT.  IT IS 3 FEET NORTH-NORTHEAST OF WITNESS MARKER,
 JU1630'12-1/2 FEET WEST-NORTHWEST OF THE SOUTHEAST CUT BANK, AND 20 FEET
 JU1630'EAST-NORTHEAST OF THE NORTH-NORTHWEST CUT BANK.  THE MARK IS A
 JU1630'STANDARD TRIANGULATION STATION DISK SET IN A 10 BY 10 INCH
 JU1630'CONCRETE MONUMENT, PROJECTS 2 INCHES AND THE DISK IS STAMPED
 JU1630'BAY 1958.
 JU1630'
 JU1630'AZIMUTH MARK IS 3 FEET WEST-SOUTHWEST OF WITNESS MARKER, 11 FEET
 JU1630'NORTH OF DRIVEWAY, AND 8 FEET SOUTHWEST OF A PEAR TREE.  THE MARK
 JU1630'IS A STANDARD AZIMUTH MARK DISK SET IN A 10 BY 10 INCH CONCRETE
 JU1630'MONUMENT, FLUSH WITH THE GROUND AND THE DISK IS STAMPED BAY 1958.
 JU1630'
 JU1630'REFERENCE MARK NO. 2 IS 2 FEET NORTHWEST OF THE SOUTHEAST EDGE
 JU1630'OF CUT BANK.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN
 JU1630'A 10 BY 10 INCH CONCRETE MONUMENT, FLUSH WITH THE GROUND AND THE
 JU1630'DISK IS STAMPED BAY NO 2 1958.
 JU1630'
 JU1630'REFERENCE MARK NO. 1 IS 2 FEET NORTHWEST OF THE SOUTHEAST EDGE
 JU1630'OF CUT BANK, AND 6 FEET EAST-SOUTHEAST OF THE CENTERLINE OF TRACK
 JU1630'ROAD.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN A 10 BY
 JU1630'10 INCH CONCRETE MONUMENT, PROJECTS 4 INCHES AND THE DISK IS
 JU1630'STAMPED BAY NO 1 1958.
 JU1630'
 JU1630'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JU1630'HIGHWAY NO. 272 (AT THE NORTH EDGE OF THE TOWN OF NORTH EAST),
 JU1630'GO NORTH ON STATE HIGHWAY NO. 272 FOR 1.8 MILE TO TOP OF GRADE,
 JU1630'AND TRACK ROAD ON LEFT.  TURN LEFT AND GO WESTERLY FOR 100 YARDS
 JU1630'TO WEST END OF SMALL RIDGE AND STATION AS DESCRIBED.  CONTINUE
 JU1630'NORTH-NORTHWEST ON STATE HIGHWAY NO. 272 FOR 0.65 MILE TO
 JU1630'DRIVEWAY ON RIGHT, TURN RIGHT AND GO EAST FOR 50 YARDS AND
 JU1630'AZIMUTH MARK ON LEFT.
 JU1630'
 JU1630'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JU1630
 JU1630                          STATION RECOVERY (1964)
 JU1630
 JU1630'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JU1630'1.9 MI N FROM NORTH EAST.
 JU1630'1.9 MILE NORTH ALONG STATE HIGHWAY 272 FROM ITS INTERSECTION
 JU1630'WITH U.S. HIGHWAY 40 AT THE NORTH EDGE OF NORTH EAST, ON THE
 JU1630'TOP OF A SMALL RIDGE OVERLOOKING A LARGE GRAVEL PIT, ABOUT 100
 JU1630'YARDS WEST OF THE CENTER LINE OF THE HIGHWAY, 12 FEET NORTH OF
 JU1630'THE SOUTH CUT BANK, 3 FEET NORTHEAST OF A METAL WITNESS POST,
 JU1630'ABOUT 10 FEET ABOVE THE LEVEL OF THE HIGHWAY AND SET IN THE TOP
 JU1630'OF A CONCRETE POST PROJECTING 2 INCHES ABOVE THE LEVEL OF THE
 JU1630'GROUND.  NOTE-- THE LOCATION OF THIS MARK SEEMS TO BE IN AREA
 JU1630'OF THE STATE HIGHWAY 272 INTERCHANGE OF THE NORTHEASTERN EXPRESSWAY,
 JU1630'THE AREA APPEARS TO HAVE BEEN LEVELED AND NO EVIDENCE OF THE
 JU1630'MARK WAS LOCATED.
 JU1630
 JU1630                          STATION RECOVERY (1971)
 JU1630
 JU1630'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1971
 JU1630'STATION AND REFERENCE MARKS DESTROYED.  INVERSE DETERMINATION
 JU1630'FROM TRAVERSE TO STATION POSITION FALLS IN PAVED SURFACE OF JFK
 JU1630'EXPWY APPROACH RAMP AT MD 272.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6659 ***********************************************************************
 HV6659  DESIGNATION -  BAY
 HV6659  PID         -  HV6659
 HV6659  STATE/COUNTY-  MD/DORCHESTER
 HV6659  COUNTRY     -  US
 HV6659  USGS QUAD   -  BARREN ISLAND (2016)
 HV6659
 HV6659                         *CURRENT SURVEY CONTROL
 HV6659  ______________________________________________________________________
 HV6659* NAD 83(1991) POSITION- 38 19 46.09322(N) 076 15 09.06996(W)   ADJUSTED
 HV6659* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6659  ______________________________________________________________________
 HV6659  GEOID HEIGHT    -        -35.027 (meters)                     GEOID18
 HV6659  LAPLACE CORR    -         -6.61  (seconds)                    DEFLEC18
 HV6659  HORZ ORDER      -  THIRD
 HV6659
 HV6659.The horizontal coordinates were established by classical geodetic methods
 HV6659.and adjusted by the National Geodetic Survey in January 1992.
 HV6659
 HV6659.The orthometric height was scaled from a topographic map.
 HV6659
 HV6659.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6659.GEOID18 height accuracy estimate available here.
 HV6659
 HV6659.Click photographs - Photos may exist for this station.
 HV6659
 HV6659.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6659
 HV6659. The following values were computed from the NAD 83(1991) position.
 HV6659
 HV6659;                    North         East     Units Scale Factor Converg.
 HV6659;SPC MD       -    73,841.704   465,357.186   MT  0.99999500   +0 28 08.9
 HV6659;SPC MD       -   242,262.32  1,526,759.37   sFT  0.99999500   +0 28 08.9
 HV6659;UTM  18      - 4,243,113.647   390,523.918   MT  0.99974760   -0 46 36.7
 HV6659
 HV6659!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6659!SPC MD       -   1.00000538  x   0.99999500  =   1.00000038
 HV6659!UTM  18      -   1.00000538  x   0.99974760  =   0.99975298
 HV6659
 HV6659:                Primary Azimuth Mark                     Grid Az
 HV6659:SPC MD       -  BAR                                      155 45 18.9
 HV6659:UTM  18      -  BAR                                      157 00 04.5
 HV6659
 HV6659_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9052343113(NAD 83)
 HV6659
 HV6659|---------------------------------------------------------------------|
 HV6659| PID    Reference Object                     Distance      Geod. Az  |
 HV6659|                                                           dddmmss.s |
 HV6659| HV6429 BAR                                 APPROX. 2.3 KM 1561327.8 |
 HV6659|---------------------------------------------------------------------|
 HV6659
 HV6659                          SUPERSEDED SURVEY CONTROL
 HV6659
 HV6659  NAD 83(1986)-  38 19 46.09246(N)    076 15 09.08669(W) AD(       ) 3
 HV6659  NAD 27      -  38 19 45.64900(N)    076 15 10.28900(W) AD(       ) 3
 HV6659
 HV6659.Superseded values are not recommended for survey control.
 HV6659
 HV6659.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6659.See file dsdata.pdf to determine how the superseded data were derived.
 HV6659
 HV6659_MARKER: DS = TRIANGULATION STATION DISK
 HV6659_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6659_STAMPING: BAY 1929
 HV6659_MARK LOGO: CGS
 HV6659_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6659+STABILITY: SURFACE MOTION
 HV6659
 HV6659  HISTORY     - Date     Condition        Report By
 HV6659  HISTORY     - 1929     MONUMENTED       CGS
 HV6659  HISTORY     - 1942     GOOD             CGS
 HV6659  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6659
 HV6659                          STATION DESCRIPTION
 HV6659
 HV6659'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (JS)
 HV6659'STATION IS LOCATED ON THE EASTERN SIDE OF CHESAPEAKE BAY, ON THE
 HV6659'E SHORE OF BARREN ISLAND, IN TAR BAY, DIRECTLY W OF POSSUM ISLAND,
 HV6659'ON A SHELL POINT COVERED WITH WATER BUSHES, GRASS AND A FEW LARGE
 HV6659'TREES.  STATION IS ABOUT 2 FEET ABOVE HIGH WATER, AND 10.9 METERS
 HV6659'FROM HIGH-WATER LINE IN RANGE WITH WITNESS MARK NO.2, AND 7.5
 HV6659'METERS FROM THE HIGH-WATER LINE IN LINE WITH REFERENCE MARK AND
 HV6659'CENTER OF POSSUM ISLAND.
 HV6659'
 HV6659'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6659'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HV6659'
 HV6659'THE UNDERGROUND MARK IS A BLOCK OF CONCRETE BELOW THE GROUND
 HV6659'CONTAINING A GLASS BOTTLE AS DESCRIBED IN NOTE 7D.
 HV6659'
 HV6659'WITNESS MARKS ARE MARKED BY A TREE WITH A TRIANGULAR BLAZE WITH
 HV6659'A NAIL AT THE CENTER AND EACH APEX OF THE TRIANGLE, AS DESCRIBED
 HV6659'IN NOTE 15A.
 HV6659
 HV6659                          STATION RECOVERY (1942)
 HV6659
 HV6659'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6659'THE FOLLOWING DISCREPANCY WAS NOTED IN THE ORIGINAL DESCRIPTION--
 HV6659'
 HV6659'(1) 9 FEET FROM THE HIGH-WATER LINE, NOT 7.5 METERS.
 HV6659'
 HV6659'THE STATION IS LOCATED ON THE EASTERN SHORE OF BARREN ISLAND
 HV6659'DIRECTLY W OF THE CENTER OF THE VERY SMALL ISLAND KNOWN AS POSSUM,
 HV6659'ON A SHELL POINT ABOUT 600 FEET E OF A HEAVY STAND OF PINE TREES,
 HV6659'32 FEET FROM THE EXTREME TIP OF THE POINT, 23 FEET N OF A SMALL
 HV6659'INDENTATION OF THE SOUTHERN SHORELINE OF THE POINT, AND 9 FEET W
 HV6659'OF THE EASTERN SHORELINE.  THE STATION IS A BRONZE DISK, STAMPED
 HV6659'BAY 1929, SET IN THE TOP OF AN 11-INCH SQUARE CONCRETE
 HV6659'MONUMENT, WHICH EXTENDS ABOUT 1 INCH ABOVE THE SURFACE OF THE
 HV6659'GROUND.  THE STATION IS IN GOOD CONDITION.
 HV6659'
 HV6659'REFERENCE MARK NO.1 IS LOCATED 38.38 FEET W OF THE STATION, 47
 HV6659'FEET W OF THE SHORELINE AND 525 FEET N OF A SMALL STAND OF POPLAR
 HV6659'TREES.  THE MARK IS A BRONZE DISK, STAMPED EAST NO.1 1929, WITH
 HV6659'THE ARROW POINTING TOWARD THE STATION, SET IN THE TOP OF A 5-INCH
 HV6659'SQUARE CONCRETE MONUMENT, WHICH PROJECTS ABOUT 2 INCHES ABOVE THE
 HV6659'SURFACE OF THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HV6659
 HV6659                          STATION RECOVERY (1961)
 HV6659
 HV6659'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6659'STATION MARK AND REFERENCE MARK WERE NOT RECOVERED AFTER A
 HV6659'THOROUGH SEARCH OF THE AREA.  THE POINT WHERE THE STATION IS
 HV6659'LOCATED HAD RECENTLY BEEN GRADED BY A BULL-DOZER IN SECURING SHELL.
 HV6659'
 HV6659'IT IS BELIEVED THAT THE STATION IS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5204 ***********************************************************************
 JV5204  DESIGNATION -  BAY
 JV5204  PID         -  JV5204
 JV5204  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5204  COUNTRY     -  US
 JV5204  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5204
 JV5204                         *CURRENT SURVEY CONTROL
 JV5204  ______________________________________________________________________
 JV5204* NAD 83(1991) POSITION- 39 05 44.58440(N) 076 26 47.62485(W)   ADJUSTED
 JV5204* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5204  ______________________________________________________________________
 JV5204  GEOID HEIGHT    -        -33.228 (meters)                     GEOID18
 JV5204  LAPLACE CORR    -         -2.32  (seconds)                    DEFLEC18
 JV5204  HORZ ORDER      -  THIRD
 JV5204
 JV5204.The horizontal coordinates were established by classical geodetic methods
 JV5204.and adjusted by the National Geodetic Survey in January 1992.
 JV5204
 JV5204.The orthometric height was scaled from a topographic map.
 JV5204
 JV5204.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5204.GEOID18 height accuracy estimate available here.
 JV5204
 JV5204.Click photographs - Photos may exist for this station.
 JV5204
 JV5204.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5204
 JV5204. The following values were computed from the NAD 83(1991) position.
 JV5204
 JV5204;                    North         East     Units Scale Factor Converg.
 JV5204;SPC MD       -   158,777.102   447,875.300   MT  0.99995719   +0 20 50.5
 JV5204;SPC MD       -   520,921.21  1,469,404.21   sFT  0.99995719   +0 20 50.5
 JV5204;UTM  18      - 4,328,394.541   374,905.812   MT  0.99979268   -0 54 44.4
 JV5204
 JV5204!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5204!SPC MD       -   1.00000509  x   0.99995719  =   0.99996228
 JV5204!UTM  18      -   1.00000509  x   0.99979268  =   0.99979777
 JV5204
 JV5204:                Primary Azimuth Mark                     Grid Az
 JV5204:SPC MD       -  SILLERY 2                                173 39 26.4
 JV5204:UTM  18      -  SILLERY 2                                174 55 01.3
 JV5204
 JV5204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7490528394(NAD 83)
 JV5204
 JV5204|---------------------------------------------------------------------|
 JV5204| PID    Reference Object                     Distance      Geod. Az  |
 JV5204|                                                           dddmmss.s |
 JV5204| JV5182 SILLERY 2                           APPROX. 1.1 KM 1740016.9 |
 JV5204| CA9961 BAY RM                                4.550 METERS 35821     |
 JV5204|---------------------------------------------------------------------|
 JV5204
 JV5204                          SUPERSEDED SURVEY CONTROL
 JV5204
 JV5204  NAD 83(1986)-  39 05 44.58014(N)    076 26 47.63535(W) AD(       ) 3
 JV5204  NAD 27      -  39 05 44.11200(N)    076 26 48.86200(W) AD(       ) 3
 JV5204  USSD        -  39 05 44.53100(N)    076 26 48.61900(W) AD(       ) 3
 JV5204
 JV5204.Superseded values are not recommended for survey control.
 JV5204
 JV5204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5204.See file dsdata.pdf to determine how the superseded data were derived.
 JV5204
 JV5204
 JV5204  HISTORY     - Date     Condition        Report By
 JV5204  HISTORY     - 1898     MONUMENTED       CGS
 JV5204  HISTORY     - 1906     GOOD             CGS
 JV5204  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5204
 JV5204                          STATION DESCRIPTION
 JV5204
 JV5204'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5204'ON N SHORE OF TAR COVE, SILLERY BAY (MAGOTHY RIVER), ABOUT 1/2
 JV5204'MILE W OF LONG POINT AND 1-1/2 MILES NE OF DOBBINS ISLAND.
 JV5204'STATION IS IN EDGE OF WOODS, ABOUT 2 FEET ABOVE AND 2 FEET BACK
 JV5204'FROM HIGH-WATER MARK.  STATION MARKED BY NAIL IN STUB INSIDE A 2-
 JV5204'BY 3-INCH BOX, 3.5 FEET DEEP, THE STUB PROJECTING 6 INCHES ABOVE
 JV5204'SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE
 JV5204'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 JV5204'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 JV5204'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 JV5204'COUNTER-SUNK IN TOP OF POST.  IT IS 4.55 METERS (14.93 FEET) FROM
 JV5204'STATION IN BEARING N 1 DEG 40 MIN W.  DISTANCES AND BEARINGS FROM
 JV5204'THE STATION OF OTHER POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT
 JV5204'TANGENT DOBBINS ISLAND, 1-1/2 MILES, S 38 DEG 16 MIN W. RIGHT
 JV5204'TANGENT SMALL ISLAND, 1-1/4 MILES, S 48 DEG 12 MIN W.  NAIL IN
 JV5204'BLAZE IN 12-INCH TREE, 6.98 METERS (22.90 FEET), N 38 DEG 44 MIN
 JV5204'W.  NAIL IN BLAZE IN 12-INCH TREE, 9.41 METERS (30.87 FEET), N 81
 JV5204'DEG 54 MIN E.  RIGHT TANGENT GIBSON ISLAND, 1 1/2 MILES, S 4 DEG 6
 JV5204'MIN E.
 JV5204
 JV5204                          STATION RECOVERY (1933)
 JV5204
 JV5204'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5204'STATION WAS SET ON THE N SHORE OF TAR COVE, IN EDGE OF WOODS, 2
 JV5204'FEET ABOVE AND 2 FEET BACK OF HIGH-WATER MARK.  THE SHORE AT THIS
 JV5204'POINT HAS BEEN FILLING IN FOR A NUMBER OF YEARS.  NO TRACE OF THE
 JV5204'STATION, OR ANY OF ITS REFERENCES, WERE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5749 ***********************************************************************
 JV5749  DESIGNATION -  BAY
 JV5749  PID         -  JV5749
 JV5749  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5749  COUNTRY     -  US
 JV5749  USGS QUAD   -  ROUND BAY (2016)
 JV5749
 JV5749                         *CURRENT SURVEY CONTROL
 JV5749  ______________________________________________________________________
 JV5749* NAD 83(1991) POSITION- 39 02 01.59223(N) 076 33 08.15067(W)   ADJUSTED
 JV5749* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV5749  ______________________________________________________________________
 JV5749  GEOID HEIGHT    -        -33.128 (meters)                     GEOID18
 JV5749  LAPLACE CORR    -         -4.80  (seconds)                    DEFLEC18
 JV5749  HORZ ORDER      -  THIRD
 JV5749
 JV5749.The horizontal coordinates were established by classical geodetic methods
 JV5749.and adjusted by the National Geodetic Survey in January 1992.
 JV5749
 JV5749.The orthometric height was scaled from a topographic map.
 JV5749
 JV5749.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5749.GEOID18 height accuracy estimate available here.
 JV5749
 JV5749.Click photographs - Photos may exist for this station.
 JV5749
 JV5749.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5749
 JV5749. The following values were computed from the NAD 83(1991) position.
 JV5749
 JV5749;                    North         East     Units Scale Factor Converg.
 JV5749;SPC MD       -   151,850.724   438,765.354   MT  0.99995364   +0 16 51.7
 JV5749;SPC MD       -   498,196.92  1,439,516.00   sFT  0.99995364   +0 16 51.7
 JV5749;UTM  18      - 4,321,671.032   365,647.223   MT  0.99982227   -0 58 39.8
 JV5749
 JV5749!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5749!SPC MD       -   1.00000382  x   0.99995364  =   0.99995746
 JV5749!UTM  18      -   1.00000382  x   0.99982227  =   0.99982609
 JV5749
 JV5749:                Primary Azimuth Mark                     Grid Az
 JV5749:SPC MD       -  ISLAND                                   306 24 52.1
 JV5749:UTM  18      -  ISLAND                                   307 40 23.6
 JV5749
 JV5749_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6564721671(NAD 83)
 JV5749
 JV5749|---------------------------------------------------------------------|
 JV5749| PID    Reference Object                     Distance      Geod. Az  |
 JV5749|                                                           dddmmss.s |
 JV5749| CA9963 BAY RM                                7.310 METERS 19708     |
 JV5749| JV5776 ISLAND                              APPROX. 1.2 KM 3064143.8 |
 JV5749|---------------------------------------------------------------------|
 JV5749
 JV5749                          SUPERSEDED SURVEY CONTROL
 JV5749
 JV5749  NAD 83(1986)-  39 02 01.58898(N)    076 33 08.16163(W) AD(       ) 3
 JV5749  NAD 27      -  39 02 01.19300(N)    076 33 09.29600(W) AD(       ) 3
 JV5749  USSD        -  39 02 01.53300(N)    076 33 09.14400(W) AD(       ) 3
 JV5749
 JV5749.Superseded values are not recommended for survey control.
 JV5749
 JV5749.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5749.See file dsdata.pdf to determine how the superseded data were derived.
 JV5749
 JV5749
 JV5749  HISTORY     - Date     Condition        Report By
 JV5749  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5749  HISTORY     - 1906     GOOD             CGS
 JV5749  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5749
 JV5749                          STATION DESCRIPTION
 JV5749
 JV5749'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5749'ON THE SW SHORE OF SEVERN RIVER, ON S SIDE OF ENTRANCE TO ROUND BAY,
 JV5749'ABOUT 3/4 MILE SE OF ST. HELENA ISLAND, AND 3/4 MILE S BY E OF
 JV5749'LONG POINT.  STATION IS AT HIGH-WATER MARK, AT FOOT OF BLUFF
 JV5749'25 FEET HIGH.  STATION MARKED BY THE CENTER OF A 4-INCH TILE PIPE
 JV5749'PROJECTING 10 INCHES ABOVE THE SURFACE OF THE GROUND.  REFERENCE
 JV5749'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5749'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5749'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5749'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 JV5749'IT IS 7.31 METERS (23.98 FEET) FROM STATION S 17
 JV5749'DEG 08 MIN W.  DISTANCES AND BEARINGS FROM THE STATION TO
 JV5749'OTHER POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 JV5749'8-INCH OAK STUMP, 3.73 METERS (12.24 FEET), S 56 DEG 50 MIN W.  NAIL
 JV5749'IN BLAZE IN 15-INCH CHESTNUT-OAK, 12.97 METERS (42.6 FEET),
 JV5749'N 81 DEG 42 MIN W.  SE CORNER OF COTTAGE ON LONG POINT, 3/4 MILE,
 JV5749'N 19 DEG 21 MIN W.  N CHIMNEY OF WHITE HOUSE ON OPPOSITE SHORE, 1
 JV5749'1/2 MILES, N 86 DEG 12 MIN E.  NAIL IN BLAZE IN 24-INCH WHITE-OAK
 JV5749'TREE, 16.50 METERS (54.1 FEET), S 35 DEG 37 MIN E.
 JV5749
 JV5749                          STATION RECOVERY (1961)
 JV5749
 JV5749'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5749'STATION WAS SEARCHED FOR BUT NOT FOUND.  MUCH OF THE SHORE HAS
 JV5749'BEEN WASHED AWAY IN THE AREA.  SNOW AND ICE MADE SEARCH DIFFICULT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7280 ***********************************************************************
 JV7280  DESIGNATION -  BAY
 JV7280  PID         -  JV7280
 JV7280  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV7280  COUNTRY     -  US
 JV7280  USGS QUAD   -  GIBSON ISLAND (2017)
 JV7280
 JV7280                         *CURRENT SURVEY CONTROL
 JV7280  ______________________________________________________________________
 JV7280* NAD 83(1986) POSITION- 39 00 38.     (N) 076 24 01.     (W)   SCALED
 JV7280* NAVD 88 ORTHO HEIGHT -     2.182 (meters)        7.16  (feet) ADJUSTED
 JV7280  ______________________________________________________________________
 JV7280  GEOID HEIGHT    -        -33.431 (meters)                     GEOID18
 JV7280  DYNAMIC HEIGHT  -          2.181 (meters)        7.16  (feet) COMP
 JV7280  MODELED GRAVITY -    980,077.6   (mgal)                       NAVD 88
 JV7280
 JV7280  VERT ORDER      -  SECOND    CLASS I
 JV7280
 JV7280.The horizontal coordinates were scaled from a map and have
 JV7280.an estimated accuracy of +/- 6 seconds.
 JV7280
 JV7280.The orthometric height was determined by differential leveling and
 JV7280.adjusted by the NATIONAL GEODETIC SURVEY
 JV7280.in July 1996.
 JV7280
 JV7280.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7280.GEOID18 height accuracy estimate available here.
 JV7280
 JV7280.Click photographs - Photos may exist for this station.
 JV7280
 JV7280.The dynamic height is computed by dividing the NAVD 88
 JV7280.geopotential number by the normal gravity value computed on the
 JV7280.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7280.degrees latitude (g = 980.6199 gals.).
 JV7280
 JV7280.The modeled gravity was interpolated from observed gravity values.
 JV7280
 JV7280;                    North         East    Units  Estimated Accuracy
 JV7280;SPC MD       -   149,350.      451,940.      MT  (+/- 180 meters Scaled)
 JV7280
 JV7280_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ787188(NAD 83)
 JV7280
 JV7280                          SUPERSEDED SURVEY CONTROL
 JV7280
 JV7280.No superseded survey control is available for this station.
 JV7280
 JV7280_MARKER: DD = SURVEY DISK
 JV7280_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7280_STAMPING: BAY 1991
 JV7280_MARK LOGO: MDSHA
 JV7280_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7280_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7280+STABILITY: SURFACE MOTION
 JV7280_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7280+SATELLITE: SATELLITE OBSERVATIONS - 1991
 JV7280
 JV7280  HISTORY     - Date     Condition        Report By
 JV7280  HISTORY     - 1991     MONUMENTED       MDSHA
 JV7280  HISTORY     - 20000217 MARK NOT FOUND   USPSQD
 JV7280
 JV7280                          STATION DESCRIPTION
 JV7280
 JV7280'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV7280'THE MARKER IS LOCATED ABOUT 7 MI (11.3 KM) NORTHEAST OF ANNAPOLIS, 3
 JV7280'MI (4.8 KM) SOUTHEAST OF CAPE ST CLAIRE, 0.3 MI (0.5 KM) NORTHEAST OF
 JV7280'THE WEST END OF THE CHESAPEAKE BAY BRIDGE AND AT THE WEST EDGE OF THE
 JV7280'SANDY POINT STATE PARK.  IT IS ON STATE OWNED PROPERTY.  TO REACH
 JV7280'FROM THE U.S. HIGHWAYS 50 AND 301 OVERPASS BRIDGE FOR THE SANDY
 JV7280'POINT PARK ACCESS ROAD, GO NORTHEAST ON THE ACCESS ROAD FOR 0.15 MILE
 JV7280'(0.24 KM) TO THE ENTRANCE TO SANDY POINT STATE PARK.  BEAR RIGHT AND
 JV7280'FOLLOW THE PARK ENTRANCE ROAD IN A EASTERLY DIRECTION FOR 0.8 MI (1.3
 JV7280'KM) TO ROAD LOOP ON THE LEFT AND A PARKING AREA ON THE RIGHT.  TURN
 JV7280'RIGHT AND GO WEST THROUGH THE PARKING AREA FOR 0.15 MI (0.24 KM) TO A
 JV7280'GATE ON THE LEFT.  PASS THROUGH THE GATE AND GO 0.05 MILE (0.08 KM)
 JV7280'TO THE STATION IN AN OPEN AREA.  THE POINT IS MARKED WITH A MARYLAND
 JV7280'STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE TOP OF A 0.8 FT
 JV7280'(0.2 M) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF
 JV7280'THE GROUND.  IT IS 129.5 FT (39.5 M) SOUTH-SOUTHEAST OF A LARGE
 JV7280'PROPAINE GAS TANK, 137.5 FT (41.9 M) SOUTHWEST OF THE SOUTHWEST
 JV7280'CORNER OF A CONCRETE BLOCK REST ROOM AND 20.0 FT (6.1 M) EAST OF A
 JV7280'CARSONITE WITNESS POST AT A WETLANDS EDGE.
 JV7280
 JV7280                          STATION RECOVERY (2000)
 JV7280
 JV7280'RECOVERY NOTE BY US POWER SQUADRON 2000
 JV7280'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5072 ***********************************************************************
 JV5072  DESIGNATION -  BAY BUSH POINT
 JV5072  PID         -  JV5072
 JV5072  STATE/COUNTY-  MD/KENT
 JV5072  COUNTRY     -  US
 JV5072  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5072
 JV5072                         *CURRENT SURVEY CONTROL
 JV5072  ______________________________________________________________________
 JV5072* NAD 83(1991) POSITION- 39 03 27.73958(N) 076 12 30.19808(W)   ADJUSTED
 JV5072* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5072  ______________________________________________________________________
 JV5072  GEOID HEIGHT    -        -33.546 (meters)                     GEOID18
 JV5072  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 JV5072  HORZ ORDER      -  THIRD
 JV5072
 JV5072.The horizontal coordinates were established by classical geodetic methods
 JV5072.and adjusted by the National Geodetic Survey in January 1992.
 JV5072
 JV5072.The orthometric height was scaled from a topographic map.
 JV5072
 JV5072.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5072.GEOID18 height accuracy estimate available here.
 JV5072
 JV5072.Click photographs - Photos may exist for this station.
 JV5072
 JV5072.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5072
 JV5072. The following values were computed from the NAD 83(1991) position.
 JV5072
 JV5072;                    North         East     Units Scale Factor Converg.
 JV5072;SPC MD       -   154,709.205   468,514.784   MT  0.99995487   +0 29 48.6
 JV5072;SPC MD       -   507,575.12  1,537,118.92   sFT  0.99995487   +0 29 48.6
 JV5072;UTM  18      - 4,323,875.014   395,446.965   MT  0.99973460   -0 45 41.3
 JV5072
 JV5072!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5072!SPC MD       -   1.00000530  x   0.99995487  =   0.99996017
 JV5072!UTM  18      -   1.00000530  x   0.99973460  =   0.99973990
 JV5072
 JV5072:                Primary Azimuth Mark                     Grid Az
 JV5072:SPC MD       -  GORDON                                   090 44 58.8
 JV5072:UTM  18      -  GORDON                                   092 00 28.7
 JV5072
 JV5072_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9544623875(NAD 83)
 JV5072
 JV5072|---------------------------------------------------------------------|
 JV5072| PID    Reference Object                     Distance      Geod. Az  |
 JV5072|                                                           dddmmss.s |
 JV5072| JV5040 GORDON                              APPROX. 2.7 KM 0911447.4 |
 JV5072| CA9962 BAY BUSH POINT RM                    10.160 METERS 27947     |
 JV5072|---------------------------------------------------------------------|
 JV5072
 JV5072                          SUPERSEDED SURVEY CONTROL
 JV5072
 JV5072  NAD 83(1986)-  39 03 27.73433(N)    076 12 30.21002(W) AD(       ) 3
 JV5072  NAD 27      -  39 03 27.33100(N)    076 12 31.35900(W) AD(       ) 3
 JV5072  USSD        -  39 03 27.70700(N)    076 12 31.20200(W) AD(       ) 3
 JV5072
 JV5072.Superseded values are not recommended for survey control.
 JV5072
 JV5072.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5072.See file dsdata.pdf to determine how the superseded data were derived.
 JV5072
 JV5072
 JV5072  HISTORY     - Date     Condition        Report By
 JV5072  HISTORY     - 1896     MONUMENTED       MDSFC
 JV5072  HISTORY     - 1909     GOOD             CGS
 JV5072  HISTORY     - 1938     MARK NOT FOUND   CGS
 JV5072
 JV5072                          STATION DESCRIPTION
 JV5072
 JV5072'DESCRIBED BY COAST AND GEODETIC SURVEY 1909
 JV5072'STATION IS ON THE WESTERN SHORE OF CHESTER RIVER, ON RINGOLD
 JV5072'POINT, ABOUT 1/4 MILE N OF ENTRANCE TO FRYING PAN COVE AND
 JV5072'CHURCH CREEK, ON A MARSH POINT, ABOUT 1 FOOT ABOVE HIGH WATER,
 JV5072'15 YARDS INSHORE, AND IN FRONT OF SEVERAL PERSIMMON TREES.
 JV5072'
 JV5072'THE STATION IS MARKED BY A NAIL IN A CEMENT-FILLED TILE PIPE.  THE
 JV5072'TOP (6 INCHES BELOW SURFACE) SURROUNDED BY CEMENT BEARING THE
 JV5072'LEGEND U.S.C.S. 1896.  THE UNDERGROUND STATION MARK IS A GLASS
 JV5072'BOTTLE BURIED 3 FEET BELOW THE SURFACE OF THE GROUND WITH THE
 JV5072'NECK UP AND SURROUNDED WITH CEMENT.
 JV5072'
 JV5072'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 JV5072'A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5072'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5072'LETTERS M.S.F.S. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 JV5072'IS 10.16 METERS (33.3 FEET) FROM THE STATION N 80 DEG
 JV5072'13 MIN W..
 JV5072'
 JV5072'DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 JV5072'REFERENCE ARE AS FOLLOWS--CHIMNEY OF BOGLES STORE, 1-5/8 MILES,
 JV5072'S 0 DEG 04 MIN W.  NAIL IN BLAZE IN 6-INCH PERSIMMON TREE, 6.25
 JV5072'METERS (20.50 FEET) S 11 DEG 08 MIN W.  NAIL IN BLAZE IN 8-INCH
 JV5072'PERSIMMON TREE, 6.20 METERS (20.34 FEET), N 17 DEG 11 MIN W. W
 JV5072'CHIMNEY OF HOUSE, 1-1/4 MILES, N 06 DEG 08 MIN E. E GABLE OF BARN,
 JV5072'3 MILES, N 24 DEG 14 MIN E. W GABLE OF BARN, 3 MILES, N 78 DEG 23
 JV5072'MIN E.  WILLIAMS WATER TANK, 2-1/2 MILES, S 49 DEG 34 MIN E. LEFT
 JV5072'TANGENT OF PILES AT BOGLE WHARF, 1-1/4 MILES, S 09 DEG 34 MIN E.
 JV5072
 JV5072                          STATION RECOVERY (1938)
 JV5072
 JV5072'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5072'STATION HAS BEEN DESTROYED BY EROSION.  THE STATION MARK (A
 JV5072'3-INCH TILE PIPE) WAS FOUND LYING ON ITS SIDE IN THE MUD FLATS,
 JV5072'AND THE REFERENCE MARK, ESTABLISHED IN 1909, WAS FOUND THROWN UP
 JV5072'ON THE RIVER BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1629 ***********************************************************************
 JU1629  DESIGNATION -  BAY RM 1
 JU1629  PID         -  JU1629
 JU1629  STATE/COUNTY-  MD/CECIL
 JU1629  COUNTRY     -  US
 JU1629  USGS QUAD   -  BAY VIEW (2016)
 JU1629
 JU1629                         *CURRENT SURVEY CONTROL
 JU1629  ______________________________________________________________________
 JU1629* NAD 83(1986) POSITION- 39 37 59.85   (N) 075 57 31.82   (W)   HD_HELD1
 JU1629* NAVD 88 ORTHO HEIGHT -   103.208 (meters)      338.61  (feet) ADJUSTED
 JU1629  ______________________________________________________________________
 JU1629  GEOID HEIGHT    -        -33.093 (meters)                     GEOID18
 JU1629  DYNAMIC HEIGHT  -        103.157 (meters)      338.44  (feet) COMP
 JU1629  MODELED GRAVITY -    980,130.8   (mgal)                       NAVD 88
 JU1629
 JU1629  VERT ORDER      -  SECOND    CLASS 0
 JU1629
 JU1629.The horizontal coordinates were determined by differentially corrected
 JU1629.hand held GPS observations or other comparable positioning techniques
 JU1629.and have an estimated accuracy of +/- 3 meters.
 JU1629
 JU1629.The orthometric height was determined by differential leveling and
 JU1629.adjusted by the NATIONAL GEODETIC SURVEY
 JU1629.in June 1991.
 JU1629
 JU1629.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1629.GEOID18 height accuracy estimate available here.
 JU1629
 JU1629.Click photographs - Photos may exist for this station.
 JU1629
 JU1629.The dynamic height is computed by dividing the NAVD 88
 JU1629.geopotential number by the normal gravity value computed on the
 JU1629.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1629.degrees latitude (g = 980.6199 gals.).
 JU1629
 JU1629.The modeled gravity was interpolated from observed gravity values.
 JU1629
 JU1629;                    North         East    Units  Estimated Accuracy
 JU1629;SPC MD       -   218,823.9     489,383.9     MT  (+/- 3 meters HH1 GPS) 
 JU1629
 JU1629_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1771687496(NAD 83)
 JU1629
 JU1629                          SUPERSEDED SURVEY CONTROL
 JU1629
 JU1629  NGVD 29 (11/26/84)  103.517  (m)          339.62   (f) ADJUSTED    2 0
 JU1629
 JU1629.Superseded values are not recommended for survey control.
 JU1629
 JU1629.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1629.See file dsdata.pdf to determine how the superseded data were derived.
 JU1629
 JU1629_MARKER: DR = REFERENCE MARK DISK
 JU1629_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1629_STAMPING: BAY NO 1 1958
 JU1629_MARK LOGO: CGS
 JU1629_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1629+STABILITY: SURFACE MOTION
 JU1629
 JU1629  HISTORY     - Date     Condition        Report By
 JU1629  HISTORY     - 1958     MONUMENTED       CGS
 JU1629  HISTORY     - 1964     GOOD             CGS
 JU1629
 JU1629                          STATION DESCRIPTION
 JU1629
 JU1629'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1629'1.9 MI N FROM NORTH EAST.
 JU1629'1.9 MILES NORTH ALONG STATE HIGHWAY 272 FROM ITS INTERSECTION
 JU1629'WITH U.S. HIGHWAY 40 AT THE NORTH EDGE OF NORTH EAST, ON THE TOP
 JU1629'OF A RIDGE OVERLOOKING A LARGE GRAVEL PIT, 80 FEET NORTHEAST OF
 JU1629'THE STATION, 6 FEET SOUTH OF THE CENTER LINE OF A DIM TRACK
 JU1629'ROAD, SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE
 JU1629'THE LEVEL OF THE GROUND.  NOTE-- THE LOCATION OF THIS MARK SEEMS
 JU1629'TO BE IN AREA OF THE STATE HIGHWAY INTERCHANGE OF THE NORTHEASTERN
 JU1629'EXPRESSWAY, AREA APPEARS TO HAVE BEEN LEVELED AND NO EVIDENCE OF
 JU1629'THE MARK WAS LOCATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1631 ***********************************************************************
 JU1631  DESIGNATION -  BAY RM 2
 JU1631  PID         -  JU1631
 JU1631  STATE/COUNTY-  MD/CECIL
 JU1631  COUNTRY     -  US
 JU1631  USGS QUAD   -  BAY VIEW (2016)
 JU1631
 JU1631                         *CURRENT SURVEY CONTROL
 JU1631  ______________________________________________________________________
 JU1631* NAD 83(1986) POSITION- 39 37 59.01   (N) 075 57 32.49   (W)   HD_HELD1
 JU1631* NAVD 88 ORTHO HEIGHT -   104.771 (meters)      343.74  (feet) ADJUSTED
 JU1631  ______________________________________________________________________
 JU1631  GEOID HEIGHT    -        -33.093 (meters)                     GEOID18
 JU1631  DYNAMIC HEIGHT  -        104.719 (meters)      343.57  (feet) COMP
 JU1631  MODELED GRAVITY -    980,130.8   (mgal)                       NAVD 88
 JU1631
 JU1631  VERT ORDER      -  SECOND    CLASS 0
 JU1631
 JU1631.The horizontal coordinates were determined by differentially corrected
 JU1631.hand held GPS observations or other comparable positioning techniques
 JU1631.and have an estimated accuracy of +/- 3 meters.
 JU1631
 JU1631.The orthometric height was determined by differential leveling and
 JU1631.adjusted by the NATIONAL GEODETIC SURVEY
 JU1631.in June 1991.
 JU1631
 JU1631.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1631.GEOID18 height accuracy estimate available here.
 JU1631
 JU1631.Click photographs - Photos may exist for this station.
 JU1631
 JU1631.The dynamic height is computed by dividing the NAVD 88
 JU1631.geopotential number by the normal gravity value computed on the
 JU1631.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1631.degrees latitude (g = 980.6199 gals.).
 JU1631
 JU1631.The modeled gravity was interpolated from observed gravity values.
 JU1631
 JU1631;                    North         East    Units  Estimated Accuracy
 JU1631;SPC MD       -   218,797.8     489,368.2     MT  (+/- 3 meters HH1 GPS) 
 JU1631
 JU1631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1770087470(NAD 83)
 JU1631
 JU1631                          SUPERSEDED SURVEY CONTROL
 JU1631
 JU1631  NGVD 29 (11/26/84)  105.080  (m)          344.75   (f) ADJUSTED    2 0
 JU1631
 JU1631.Superseded values are not recommended for survey control.
 JU1631
 JU1631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1631.See file dsdata.pdf to determine how the superseded data were derived.
 JU1631
 JU1631_MARKER: DR = REFERENCE MARK DISK
 JU1631_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1631_STAMPING: BAY NO 2 1958
 JU1631_MARK LOGO: CGS
 JU1631_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1631+STABILITY: SURFACE MOTION
 JU1631
 JU1631  HISTORY     - Date     Condition        Report By
 JU1631  HISTORY     - 1958     MONUMENTED       CGS
 JU1631  HISTORY     - 1964     GOOD             CGS
 JU1631
 JU1631                          STATION DESCRIPTION
 JU1631
 JU1631'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1631'1.9 MI N FROM NORTH EAST.
 JU1631'1.9 MILES NORTH ALONG STATE HIGHWAY 272 FROM THE INTERSECTION
 JU1631'OF U.S. HIGHWAY 40 AT THE NORTH EDGE OF NORTH EAST, ON THE TOP
 JU1631'OF A RIDGE OVERLOOKING A LARGE GRAVEL PIT, 25.8 FEET SOUTH OF
 JU1631'THE STATION, 2 FEET NORTH OF THE SOUTH EDGE OF CUTBANK, SET IN
 JU1631'THE TOP OF A CONCRETE POST PROJECTING 2 INCHES ABOVE THE GROUND.
 JU1631'NOTE-- THE LOCATION OF THIS MARK SEEMS TO BE IN AREA OF THE
 JU1631'STATE HIGHWAY 272 INTERCHANGE OF THE NORTHEASTERN EXPRESSWAY,
 JU1631'THE AREA APPEARS TO HAVE BEEN LEVELED AND NO EVIDENCE OF THE
 JU1631'MARK WAS LOCATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9391 ***********************************************************************
 DR9391  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9391  DESIGNATION -  BAY SHORE
 DR9391  PID         -  DR9391
 DR9391  STATE/COUNTY-  MD/KENT
 DR9391  COUNTRY     -  US
 DR9391  USGS QUAD   -  ROCK HALL (2016)
 DR9391
 DR9391                         *CURRENT SURVEY CONTROL
 DR9391  ______________________________________________________________________
 DR9391* NAD 83(2011) POSITION- 39 14 09.80271(N) 076 12 54.25779(W)   ADJUSTED
 DR9391* NAD 83(2011) ELLIP HT-   -21.011 (meters)        (09/18/23)   ADJUSTED
 DR9391* NAD 83(2011) EPOCH   -  2010.00
 DR9391* NAVD 88 ORTHO HEIGHT -    12.22  (meters)       40.1   (feet) GPS OBS
 DR9391  ______________________________________________________________________
 DR9391  GEOID HEIGHT    -        -33.241 (meters)                     GEOID18
 DR9391  NAD 83(2011) X  -  1,178,708.076 (meters)                     COMP
 DR9391  NAD 83(2011) Y  - -4,804,294.859 (meters)                     COMP
 DR9391  NAD 83(2011) Z  -  4,012,635.928 (meters)                     COMP
 DR9391  LAPLACE CORR    -         -1.76  (seconds)                    DEFLEC18
 DR9391
 DR9391  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9391  Standards:
 DR9391         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9391            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9391  -------------------------------------------------------------------
 DR9391  NETWORK    0.64   1.45           0.28   0.24   0.74     -0.08558234
 DR9391  -------------------------------------------------------------------
 DR9391  Click here for local accuracies and other accuracy information.
 DR9391
 DR9391.The horizontal coordinates were established by GPS observations
 DR9391.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9391
 DR9391.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9391.been affixed to the stable North American tectonic plate. See 
 DR9391.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9391
 DR9391.The horizontal coordinates are valid at the epoch date displayed above
 DR9391.which is a decimal equivalence of Year/Month/Day.
 DR9391
 DR9391.The orthometric height was determined by GPS observations and a
 DR9391.high-resolution geoid model using precise GPS observation and
 DR9391.processing techniques.
 DR9391
 DR9391.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9391.GEOID18 height accuracy estimate available here.
 DR9391
 DR9391.Click photographs - Photos may exist for this station.
 DR9391
 DR9391.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9391
 DR9391.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9391
 DR9391.The ellipsoidal height was determined by GPS observations
 DR9391.and is referenced to NAD 83.
 DR9391
 DR9391. The following values were computed from the NAD 83(2011) position.
 DR9391
 DR9391;                    North         East     Units Scale Factor Converg.
 DR9391;SPC MD       -   174,502.922   467,766.116   MT  0.99996957   +0 29 33.5
 DR9391;SPC MD       -   572,515.00  1,534,662.67   sFT  0.99996957   +0 29 33.5
 DR9391;UTM  18      - 4,343,675.922   395,133.729   MT  0.99973540   -0 46 07.0
 DR9391
 DR9391!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9391!SPC MD       -   1.00000330  x   0.99996957  =   0.99997287
 DR9391!UTM  18      -   1.00000330  x   0.99973540  =   0.99973870
 DR9391
 DR9391_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9513343675(NAD 83)
 DR9391
 DR9391                          SUPERSEDED SURVEY CONTROL
 DR9391
 DR9391.No superseded survey control is available for this station.
 DR9391
 DR9391_MARKER: DD = SURVEY DISK
 DR9391_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9391_STAMPING: BAYSHORE 2021
 DR9391_MARK LOGO: MD-029
 DR9391_PROJECTION: FLUSH
 DR9391_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9391_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9391+STABILITY: SURFACE MOTION
 DR9391_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9391+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9391
 DR9391  HISTORY     - Date     Condition        Report By
 DR9391  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9391
 DR9391                          STATION DESCRIPTION
 DR9391
 DR9391'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9391'THE MARK IS LOCATED ABOUT 8.2 MI (13.2 KM) WEST-NORTHWEST OF
 DR9391'CHESTERTOWN, 6.8 MI (10.9 KM) NORTH OF ROCK HALL, 5.1 MI (8.2 KM)
 DR9391'WEST-SOUTHWEST OF HANESVILLE AND 2.5 MI (4.0 KM) WEST-NORTHWEST OF
 DR9391'FAIRLEE.
 DR9391'
 DR9391'TO REACH THE MARK FROM THE JUNCTION OF MD 20 W AND MD 21, GO NORTHWEST
 DR9391'ON MD 21 FOR 0.59 MI (0.95 KM) TO AN INTERSECTION.  CONTINUE STRAIGHT
 DR9391'AHEAD ON SLIGHT RIGHT ONTO CAULKS FIELD ROAD FOR 2.08 MI (3.35 KM) TO
 DR9391'AN INTERSECTION.  TURN RIGHT AND GO NORTH ON BAY SHORE ROAD FOR 0.46
 DR9391'MI (0.74 KM) TO THE MARK ON THE LEFT.
 DR9391'
 DR9391'THE MARK IS LOCATED AT THE INTERSECTION OF BAY SHORE ROAD AND
 DR9391'CHANTILLY FARM LANE.
 DR9391'
 DR9391'THE MARK IS 87.3 FT (26.6 M) SOUTH-SOUTHEAST OF A UTILITY POLE, 77.6
 DR9391'FT (23.7 M) SOUTH OF A UTILITY POLE NUMBERED 29628-25022, 58.5 FT
 DR9391'(17.8 M) SOUTH-SOUTHEAST OF THE CENTERLINE OF A GRAVEL ROAD FOR
 DR9391'CHANTILLY FARM LANE, 41.8 FT (12.7 M) NORTH-NORTHWEST OF A UTILITY
 DR9391'POLE NUMBERED C AND P MD 80/29633-25011, 15.3 FT (4.7 M)
 DR9391'NORTH-NORTHWEST OF THE CENTERLINE OF BAY SHORE ROAD SET IN THE TOP OF
 DR9391'A 12-IN (30 CM) ROUND CONCRETE POST AND ABOUT LEVEL WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9392 ***********************************************************************
 DR9392  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9392  DESIGNATION -  BAY SHORE AZ MK
 DR9392  PID         -  DR9392
 DR9392  STATE/COUNTY-  MD/KENT
 DR9392  COUNTRY     -  US
 DR9392  USGS QUAD   -  ROCK HALL (2016)
 DR9392
 DR9392                         *CURRENT SURVEY CONTROL
 DR9392  ______________________________________________________________________
 DR9392* NAD 83(2011) POSITION- 39 14 11.26208(N) 076 12 46.91703(W)   ADJUSTED
 DR9392* NAD 83(2011) ELLIP HT-   -21.884 (meters)        (09/18/23)   ADJUSTED
 DR9392* NAD 83(2011) EPOCH   -  2010.00
 DR9392* NAVD 88 ORTHO HEIGHT -    11.35  (meters)       37.2   (feet) GPS OBS
 DR9392  ______________________________________________________________________
 DR9392  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 DR9392  NAD 83(2011) X  -  1,178,872.110 (meters)                     COMP
 DR9392  NAD 83(2011) Y  - -4,804,224.604 (meters)                     COMP
 DR9392  NAD 83(2011) Z  -  4,012,670.234 (meters)                     COMP
 DR9392  LAPLACE CORR    -         -1.78  (seconds)                    DEFLEC18
 DR9392
 DR9392  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9392  Standards:
 DR9392         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9392            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9392  -------------------------------------------------------------------
 DR9392  NETWORK    0.65   1.43           0.28   0.25   0.73     -0.05814413
 DR9392  -------------------------------------------------------------------
 DR9392  Click here for local accuracies and other accuracy information.
 DR9392
 DR9392.The horizontal coordinates were established by GPS observations
 DR9392.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9392
 DR9392.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9392.been affixed to the stable North American tectonic plate. See 
 DR9392.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9392
 DR9392.The horizontal coordinates are valid at the epoch date displayed above
 DR9392.which is a decimal equivalence of Year/Month/Day.
 DR9392
 DR9392.The orthometric height was determined by GPS observations and a
 DR9392.high-resolution geoid model using precise GPS observation and
 DR9392.processing techniques.
 DR9392
 DR9392.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9392.GEOID18 height accuracy estimate available here.
 DR9392
 DR9392.Click photographs - Photos may exist for this station.
 DR9392
 DR9392.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9392
 DR9392.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9392
 DR9392.The ellipsoidal height was determined by GPS observations
 DR9392.and is referenced to NAD 83.
 DR9392
 DR9392. The following values were computed from the NAD 83(2011) position.
 DR9392
 DR9392;                    North         East     Units Scale Factor Converg.
 DR9392;SPC MD       -   174,549.440   467,941.767   MT  0.99996961   +0 29 38.1
 DR9392;SPC MD       -   572,667.62  1,535,238.95   sFT  0.99996961   +0 29 38.1
 DR9392;UTM  18      - 4,343,718.553   395,310.321   MT  0.99973495   -0 46 02.4
 DR9392
 DR9392!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9392!SPC MD       -   1.00000343  x   0.99996961  =   0.99997304
 DR9392!UTM  18      -   1.00000343  x   0.99973495  =   0.99973838
 DR9392
 DR9392_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9531043718(NAD 83)
 DR9392
 DR9392                          SUPERSEDED SURVEY CONTROL
 DR9392
 DR9392.No superseded survey control is available for this station.
 DR9392
 DR9392_MARKER: DD = SURVEY DISK
 DR9392_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9392_STAMPING: BAYSHORE AZ 2021
 DR9392_MARK LOGO: MD-029
 DR9392_PROJECTION: FLUSH
 DR9392_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9392_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9392+STABILITY: SURFACE MOTION
 DR9392_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9392+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9392
 DR9392  HISTORY     - Date     Condition        Report By
 DR9392  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9392
 DR9392                          STATION DESCRIPTION
 DR9392
 DR9392'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9392'THE MARK IS LOCATED ABOUT 8.1 MI (13.0 KM) WEST-NORTHWEST OF
 DR9392'CHESTERTOWN, 6.9 MI (11.1 KM) NORTH OF ROCK HALL, 5.0 MI (8.0 KM)
 DR9392'WEST-SOUTHWEST OF HANESVILLE AND 2.4 MI (3.9 KM) WEST-NORTHWEST OF
 DR9392'FAIRLEE.
 DR9392'
 DR9392'TO REACH THE MARK FROM THE JUNCTION OF MD 20 W AND MD 21, GO NORTHWEST
 DR9392'ON MD 21 FOR 0.59 MI (0.95 KM) TO AN INTERSECTION.  CONTINUE STRAIGHT
 DR9392'AHEAD ON SLIGHT RIGHT ONTO CAULKS FIELD ROAD FOR 2.08 MI (3.35 KM) TO
 DR9392'AN INTERSECTION.  TURN RIGHT AND GO NORTH ON BAY SHORE ROAD FOR 0.58
 DR9392'MI (0.93 KM) TO THE MARK ON THE RIGHT.
 DR9392'
 DR9392'THE MARK IS 171.7 FT (52.3 M) SOUTHWEST OF A UTILITY POLE NUMBERED C
 DR9392'AND P MD 76/29701-25038, 48.5 FT (14.8 M) NORTHEAST OF A GUY ANCHOR
 DR9392'FOR POWER POLE NUMBERED C AND P MD77, 45.4 FT (13.8 M) NORTHEAST OF A
 DR9392'UTILITY POLE NUMBERED C AND P MD 77, 43.8 FT (13.4 M) SOUTH-SOUTHEAST
 DR9392'OF A UTILITY POLE NUMBERED C AND P MD 76/29701-25038, 14.9 FT (4.5 M)
 DR9392'SOUTH-SOUTHEAST OF THE CENTERLINE OF BAY SHORE ROAD ROAD SET IN THE
 DR9392'TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND ABOUT LEVEL WITH THE
 DR9392'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5950 ***********************************************************************
 HV5950  DESIGNATION -  BAYLY MSFC 1910
 HV5950  PID         -  HV5950
 HV5950  STATE/COUNTY-  MD/DORCHESTER
 HV5950  COUNTRY     -  US
 HV5950  USGS QUAD   -  CHURCH CREEK (2016)
 HV5950
 HV5950                         *CURRENT SURVEY CONTROL
 HV5950  ______________________________________________________________________
 HV5950* NAD 83(1991) POSITION- 38 33 06.99406(N) 076 14 42.16117(W)   ADJUSTED
 HV5950* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5950  ______________________________________________________________________
 HV5950  GEOID HEIGHT    -        -34.678 (meters)                     GEOID18
 HV5950  LAPLACE CORR    -         -5.34  (seconds)                    DEFLEC18
 HV5950  HORZ ORDER      -  THIRD
 HV5950
 HV5950.The horizontal coordinates were established by classical geodetic methods
 HV5950.and adjusted by the National Geodetic Survey in January 1992.
 HV5950
 HV5950.The orthometric height was scaled from a topographic map.
 HV5950
 HV5950.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5950.GEOID18 height accuracy estimate available here.
 HV5950
 HV5950.Click photographs - Photos may exist for this station.
 HV5950
 HV5950.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5950
 HV5950. The following values were computed from the NAD 83(1991) position.
 HV5950
 HV5950;                    North         East     Units Scale Factor Converg.
 HV5950;SPC MD       -    98,541.240   465,806.505   MT  0.99996573   +0 28 25.8
 HV5950;SPC MD       -   323,297.38  1,528,233.51   sFT  0.99996573   +0 28 25.8
 HV5950;UTM  18      - 4,267,791.791   391,510.829   MT  0.99974494   -0 46 33.7
 HV5950
 HV5950!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5950!SPC MD       -   1.00000548  x   0.99996573  =   0.99997121
 HV5950!UTM  18      -   1.00000548  x   0.99974494  =   0.99975042
 HV5950
 HV5950_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9151067791(NAD 83)
 HV5950
 HV5950                          SUPERSEDED SURVEY CONTROL
 HV5950
 HV5950  NAD 83(1986)-  38 33 06.99183(N)    076 14 42.17661(W) AD(       ) 3
 HV5950  NAD 27      -  38 33 06.58500(N)    076 14 43.36500(W) AD(       ) 3
 HV5950  USSD        -  38 33 06.96900(N)    076 14 43.14800(W) AD(       ) 3
 HV5950
 HV5950.Superseded values are not recommended for survey control.
 HV5950
 HV5950.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5950.See file dsdata.pdf to determine how the superseded data were derived.
 HV5950
 HV5950_MARKER: Z = SEE DESCRIPTION
 HV5950_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5950_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5950+STABILITY: SURFACE MOTION
 HV5950
 HV5950  HISTORY     - Date     Condition        Report By
 HV5950  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5950  HISTORY     - 1941     GOOD             CGS
 HV5950  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5950
 HV5950                          STATION DESCRIPTION
 HV5950
 HV5950'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5950'ON THE EASTERN SHORE OF HUDSON CREEK, ABOUT 3/8 MILE N OF
 HV5950'ENTRANCE TO BACK CREEK, AND 1 MILE N OF CASONS POINT, ON MARSH
 HV5950'LAND ABOUT LEVEL WITH HIGH WATER, 11 YARDS E OF SHORE, 20 YARDS S
 HV5950'OF SHORE, 22 YARDS NE OF SHORE, 8 YARDS W OF A BANK 3 FEET HIGH,
 HV5950'AND 15 YARDS SW OF A LARGE DEAD CHERRY TREE.  STATION IS MARKED BY
 HV5950'A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5950'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV5950'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5950'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS
 HV5950'CENTER OF A 2-INCH TILE PIPE BURIED WITH TOP 2 INCHES BELOW BASE
 HV5950'OF MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV5950'REFERENCE ARE AS FOLLOWS--NEAR PEAK OF HOUSE, 3/8 MILE, S 65 DEG 4
 HV5950'MIN W.  LEFT PEAK OF BARN, 3/8 MILE, S 79 DEG 43 MIN W.  RIGHT
 HV5950'CHIMNEY OF HOUSE, 3/8 MILE, N 50 DEG 58 MIN W. LEFT CHIMNEY OF
 HV5950'HOUSE, 1-1/8 MILES, N 21 DEG 1 MIN W.  LEFT CHIMNEY OF HOUSE, N 7
 HV5950'DEG 13 MIN W.  LEFT CHIMNEY OF HOUSE, 1/4 MILE, N 5 DEG 12 MIN E.
 HV5950'NAIL IN BLAZE IN 4-INCH CHERRY TREE, 8.19 METERS (26.87 FEET), N
 HV5950'48 DEG 1 MIN E.  NEAR PEAK OF SMALL HOUSE, 3/8 MILE, N 69 DEG 2 MIN E.
 HV5950
 HV5950                          STATION RECOVERY (1941)
 HV5950
 HV5950'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HV5950'RECOVERED IN GOOD CONDITION.
 HV5950'
 HV5950'DISTANCES AND MEASUREMENTS SHOULD READ AS FOLLOWS--14.0 METERS S
 HV5950'OF SHORE, 11.0 METERS E OF SHORE, 24.9 METERS NE OF POINT, 8.10
 HV5950'METERS SW OF TRIANGLE WITH 3 NAILS IN WILD CHERRY.  SHORE MEANS
 HV5950'EDGE OF MARSH.
 HV5950
 HV5950                          STATION RECOVERY (1961)
 HV5950
 HV5950'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5950'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  THE CARETAKER OF
 HV5950'THE PROPERTY WHERE THE MARK WAS LOCATED STATED THAT HE HAD SEEN
 HV5950'THE MARK OVERTURNED ON THE SHORE SEVERAL YEARS AGO.  STATION HAS
 HV5950'PROBABLY BEEN DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5238 ***********************************************************************
 JV5238  DESIGNATION -  BAYSIDE
 JV5238  PID         -  JV5238
 JV5238  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5238  COUNTRY     -  US
 JV5238  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5238
 JV5238                         *CURRENT SURVEY CONTROL
 JV5238  ______________________________________________________________________
 JV5238* NAD 83(1991) POSITION- 39 00 42.73138(N) 076 23 42.99754(W)   ADJUSTED
 JV5238* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5238  ______________________________________________________________________
 JV5238  GEOID HEIGHT    -        -33.435 (meters)                     GEOID18
 JV5238  LAPLACE CORR    -         -2.18  (seconds)                    DEFLEC18
 JV5238  HORZ ORDER      -  THIRD
 JV5238
 JV5238.The horizontal coordinates were established by classical geodetic methods
 JV5238.and adjusted by the National Geodetic Survey in January 1992.
 JV5238
 JV5238.The orthometric height was scaled from a topographic map.
 JV5238
 JV5238.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5238.GEOID18 height accuracy estimate available here.
 JV5238
 JV5238.Click photographs - Photos may exist for this station.
 JV5238
 JV5238.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5238
 JV5238. The following values were computed from the NAD 83(1991) position.
 JV5238
 JV5238;                    North         East     Units Scale Factor Converg.
 JV5238;SPC MD       -   149,497.350   452,373.354   MT  0.99995266   +0 22 46.4
 JV5238;SPC MD       -   490,475.89  1,484,161.58   sFT  0.99995266   +0 22 46.4
 JV5238;UTM  18      - 4,319,019.794   379,198.193   MT  0.99977969   -0 52 42.3
 JV5238
 JV5238!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5238!SPC MD       -   1.00000513  x   0.99995266  =   0.99995779
 JV5238!UTM  18      -   1.00000513  x   0.99977969  =   0.99978482
 JV5238
 JV5238_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7919819019(NAD 83)
 JV5238
 JV5238                          SUPERSEDED SURVEY CONTROL
 JV5238
 JV5238  NAD 83(1986)-  39 00 42.72707(N)    076 23 43.00891(W) AD(       ) 3
 JV5238  NAD 27      -  39 00 42.32900(N)    076 23 44.14400(W) AD(       ) 3
 JV5238  USSD        -  39 00 42.68400(N)    076 23 43.99900(W) AD(       ) 3
 JV5238
 JV5238.Superseded values are not recommended for survey control.
 JV5238
 JV5238.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5238.See file dsdata.pdf to determine how the superseded data were derived.
 JV5238
 JV5238_MARKER: Z = SEE DESCRIPTION
 JV5238_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5238_STAMPING: M.S.F.C.  U.S.C.S.
 JV5238_MARK LOGO: MDSFC
 JV5238_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5238+STABILITY: SURFACE MOTION
 JV5238
 JV5238  HISTORY     - Date     Condition        Report By
 JV5238  HISTORY     - 1906     MONUMENTED       MDSFC
 JV5238  HISTORY     - 1932     GOOD             CGS
 JV5238
 JV5238                          STATION DESCRIPTION
 JV5238
 JV5238'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 JV5238'ON THE W SHORE OF CHESAPEAKE BAY, ON SANDY POINT, ABOUT 1/2 MILE
 JV5238'WSW OF SANDY POINT LIGHT AND ABOUT 1/4 MILE SE OF BAY SIDE FARM
 JV5238'DWELLINGS.  STATION IS ON LOW SANDY POINT, ABOUT 2 FEET ABOVE AND
 JV5238'75 YARDS BACK FROM HIGH-WATER MARK, AND 14 PACES E OF ROAD TO BAY
 JV5238'SIDE HOUSE.  A NUMBER OF SMALL LOCUSTS STAND IN THE IMMEDIATE
 JV5238'VICINITY.  MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5238'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5238'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5238'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 JV5238'AND BEARINGS TO NEARBY OBJECTS WERE AS FOLLOWS--NAIL IN 8-INCH
 JV5238'LOCUST TREE, 19.69 METERS (64.6 FEET), S 12 DEG 58 MIN W.  NAIL IN
 JV5238'6-INCH LOCUST TREE, 17.02 METERS (55.8 FEET), S 57 DEG 59 MIN W.
 JV5238'W CHIMNEY BAY SIDE FARMHOUSE, 350 YARDS, N 49 DEG 51 MIN W.  W
 JV5238'CUPOLA OF BAY SIDE BARN, 400 YARDS, N 46 DEG 2 MIN W.  W PEAK OF
 JV5238'SMALL HOUSE (RED ROOF), 300 YARDS, N 20 DEG 7 MIN W.
 JV5238
 JV5238                          STATION RECOVERY (1932)
 JV5238
 JV5238'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 JV5238'THE STATION WAS RECOVERED BUT IS 100 YARDS FROM THE HIGH-WATER
 JV5238'MARK.  THE LOCUST TREES, BARN CUPOLA, AND SMALL HOUSE DESCRIBED AS
 JV5238'REFERENCE MARKS NO LONGER EXIST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0625 ***********************************************************************
 HV0625  DESIGNATION -  BB
 HV0625  PID         -  HV0625
 HV0625  STATE/COUNTY-  MD/CHARLES
 HV0625  COUNTRY     -  US
 HV0625  USGS QUAD   -  POPES CREEK (2016)
 HV0625
 HV0625                         *CURRENT SURVEY CONTROL
 HV0625  ______________________________________________________________________
 HV0625* NAD 83(1986) POSITION- 38 23 56.77   (N) 076 59 28.31   (W)   HD_HELD1
 HV0625* NAVD 88 ORTHO HEIGHT -     2.935 (meters)        9.63  (feet) ADJUSTED
 HV0625  ______________________________________________________________________
 HV0625  GEOID HEIGHT    -        -33.332 (meters)                     GEOID18
 HV0625  DYNAMIC HEIGHT  -          2.933 (meters)        9.62  (feet) COMP
 HV0625  MODELED GRAVITY -    980,009.3   (mgal)                       NAVD 88
 HV0625
 HV0625  VERT ORDER      -  FIRST     CLASS II
 HV0625
 HV0625.The horizontal coordinates were determined by differentially corrected
 HV0625.hand held GPS observations or other comparable positioning techniques
 HV0625.and have an estimated accuracy of +/- 3 meters.
 HV0625
 HV0625.The orthometric height was determined by differential leveling and
 HV0625.adjusted by the NATIONAL GEODETIC SURVEY
 HV0625.in June 1991.
 HV0625
 HV0625.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0625.GEOID18 height accuracy estimate available here.
 HV0625
 HV0625.Click photographs - Photos may exist for this station.
 HV0625
 HV0625.The dynamic height is computed by dividing the NAVD 88
 HV0625.geopotential number by the normal gravity value computed on the
 HV0625.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0625.degrees latitude (g = 980.6199 gals.).
 HV0625
 HV0625.The modeled gravity was interpolated from observed gravity values.
 HV0625
 HV0625;                    North         East    Units  Estimated Accuracy
 HV0625;SPC MD       -    81,303.5     400,768.9     MT  (+/- 3 meters HH1 GPS) 
 HV0625
 HV0625_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2612151974(NAD 83)
 HV0625
 HV0625                          SUPERSEDED SURVEY CONTROL
 HV0625
 HV0625  NGVD 29 (05/01/89)    3.180  (m)           10.43   (f) ADJUSTED    1 2
 HV0625  NGVD 29 (??/??/87)    3.217  (m)           10.55   (f) SUPERSEDED  1 2
 HV0625
 HV0625.Superseded values are not recommended for survey control.
 HV0625
 HV0625.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0625.See file dsdata.pdf to determine how the superseded data were derived.
 HV0625
 HV0625_MARKER: DB = BENCH MARK DISK
 HV0625_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0625_STAMPING: BB 1917
 HV0625_MARK LOGO: CGS
 HV0625_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0625+STABILITY: SURFACE MOTION
 HV0625
 HV0625  HISTORY     - Date     Condition        Report By
 HV0625  HISTORY     - 1917     MONUMENTED       CGS
 HV0625  HISTORY     - 1953     GOOD             CGS
 HV0625
 HV0625                          STATION DESCRIPTION
 HV0625
 HV0625'DESCRIBED BY COAST AND GEODETIC SURVEY 1917
 HV0625'AT POPES CREEK.
 HV0625'AT POPES CREEK, CHARLES COUNTY, ON THE PENNSYLVANIA RAILROAD, 98
 HV0625'FEET SOUTHEAST OF THE MAIN TRACK, 44 FEET SOUTHWEST OF THE
 HV0625'SOUTHWEST CORNER OF THE RAILWAY EXPRESS BUILDING, 19 FEET SOUTHEAST
 HV0625'OF THE SOUTHEAST CORNER OF A SMALL BUILDING THAT USED TO BE
 HV0625'THE POST OFFICE, AND UNDER A TREE JUST SOUTHEAST OF THE HOUSE.
 HV0625'A STANDARD DISK, STAMPED BB 1917 AND SET IN THE TOP OF A CONCRETE
 HV0625'POST PROJECTING 12 INCHES ABOVE GROUND.
 HV0625
 HV0625                          STATION RECOVERY (1953)
 HV0625
 HV0625'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953
 HV0625'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1555 ***********************************************************************
 JU1555  DESIGNATION -  BB 112
 JU1555  PID         -  JU1555
 JU1555  STATE/COUNTY-  MD/CECIL
 JU1555  COUNTRY     -  US
 JU1555  USGS QUAD   -  NEWARK WEST (2016)
 JU1555
 JU1555                         *CURRENT SURVEY CONTROL
 JU1555  ______________________________________________________________________
 JU1555* NAD 83(1986) POSITION- 39 42 38.88   (N) 075 52 08.21   (W)   HD_HELD1
 JU1555* NAVD 88 ORTHO HEIGHT -   113.772 (meters)      373.27  (feet) ADJUSTED
 JU1555  ______________________________________________________________________
 JU1555  GEOID HEIGHT    -        -33.011 (meters)                     GEOID18
 JU1555  DYNAMIC HEIGHT  -        113.717 (meters)      373.09  (feet) COMP
 JU1555  MODELED GRAVITY -    980,137.2   (mgal)                       NAVD 88
 JU1555
 JU1555  VERT ORDER      -  SECOND    CLASS 0
 JU1555
 JU1555.The horizontal coordinates were determined by differentially corrected
 JU1555.hand held GPS observations or other comparable positioning techniques
 JU1555.and have an estimated accuracy of +/- 3 meters.
 JU1555
 JU1555.The orthometric height was determined by differential leveling and
 JU1555.adjusted by the NATIONAL GEODETIC SURVEY
 JU1555.in June 1991.
 JU1555
 JU1555.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1555.GEOID18 height accuracy estimate available here.
 JU1555
 JU1555.Click photographs - Photos may exist for this station.
 JU1555
 JU1555.The dynamic height is computed by dividing the NAVD 88
 JU1555.geopotential number by the normal gravity value computed on the
 JU1555.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1555.degrees latitude (g = 980.6199 gals.).
 JU1555
 JU1555.The modeled gravity was interpolated from observed gravity values.
 JU1555
 JU1555;                    North         East    Units  Estimated Accuracy
 JU1555;SPC MD       -   227,521.0     496,994.1     MT  (+/- 3 meters HH1 GPS) 
 JU1555
 JU1555_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2551496020(NAD 83)
 JU1555
 JU1555                          SUPERSEDED SURVEY CONTROL
 JU1555
 JU1555  NGVD 29 (11/26/84)  114.079  (m)          374.27   (f) ADJUSTED    2 0
 JU1555
 JU1555.Superseded values are not recommended for survey control.
 JU1555
 JU1555.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1555.See file dsdata.pdf to determine how the superseded data were derived.
 JU1555
 JU1555_MARKER: DB = BENCH MARK DISK
 JU1555_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JU1555_SP_SET: CULVERT HEADWALL
 JU1555_STAMPING: BB 112 1935
 JU1555_MARK LOGO: CGS
 JU1555_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1555+STABILITY: SURFACE MOTION
 JU1555_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1555+SATELLITE: SATELLITE OBSERVATIONS - September 16, 2025
 JU1555
 JU1555  HISTORY     - Date     Condition        Report By
 JU1555  HISTORY     - 1935     MONUMENTED       CGS
 JU1555  HISTORY     - 1964     GOOD             CGS
 JU1555  HISTORY     - 19910216 GOOD             USPSQD
 JU1555  HISTORY     - 20050428 GOOD             DEWDAV
 JU1555  HISTORY     - 20110414 GOOD             PADT
 JU1555  HISTORY     - 20250916 SEE DESCRIPTION  PROFLN
 JU1555
 JU1555                          STATION DESCRIPTION
 JU1555
 JU1555'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1555'1 MI SE FROM LEWISVILLE PA.
 JU1555'1.0 MILE SOUTHEAST ALONG STATE HIGHWAY 280 FROM THE STATE LINE
 JU1555'AT LEWISVILLE, 0.6 MILE NORTH OF THE CROSSROADS AT FAIR HILL,
 JU1555'NEAR THE NORTHWEST CORNER OF A CEMETERY, IN THE EAST CONCRETE
 JU1555'HEADWALL OF A CULVERT, 17 FEET EAST OF CENTERLINE OF THE HIGHWAY
 JU1555'AND 2 FEET NORTH OF SOUTH END OF THE HEADWALL.  A STANDARD DISK
 JU1555'IN A DRILL HOLE.
 JU1555
 JU1555                          STATION RECOVERY (1991)
 JU1555
 JU1555'RECOVERY NOTE BY US POWER SQUADRON 1991 (MRM)
 JU1555'RECOVERED IN GOOD CONDITION.
 JU1555
 JU1555                          STATION RECOVERY (2005)
 JU1555
 JU1555'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (KEC)
 JU1555'RECOVERED IN GOOD CONDITION.
 JU1555
 JU1555                          STATION RECOVERY (2011)
 JU1555
 JU1555'RECOVERY NOTE BY PA DEPT OF TRANSP 2011 (PAL)
 JU1555'RECOVERED IN GOOD CONDITION.
 JU1555
 JU1555                          STATION RECOVERY (2025)
 JU1555
 JU1555'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1555'THE CONCRETE IS SPALLING AT THIS LOCATION ON THE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0019 ***********************************************************************
 JW0019  DESIGNATION -  BB 14
 JW0019  PID         -  JW0019
 JW0019  STATE/COUNTY-  MD/WASHINGTON
 JW0019  COUNTRY     -  US
 JW0019  USGS QUAD   -  HANCOCK (2016)
 JW0019
 JW0019                         *CURRENT SURVEY CONTROL
 JW0019  ______________________________________________________________________
 JW0019* NAD 83(1986) POSITION- 39 40 48.     (N) 078 12 43.     (W)   SCALED
 JW0019* NAVD 88 ORTHO HEIGHT -   139.224 (meters)      456.77  (feet) ADJUSTED
 JW0019  ______________________________________________________________________
 JW0019  GEOID HEIGHT    -        -33.974 (meters)                     GEOID18
 JW0019  DYNAMIC HEIGHT  -        139.143 (meters)      456.51  (feet) COMP
 JW0019  MODELED GRAVITY -    980,045.3   (mgal)                       NAVD 88
 JW0019
 JW0019  VERT ORDER      -  FIRST     CLASS II
 JW0019
 JW0019.The horizontal coordinates were scaled from a map and have
 JW0019.an estimated accuracy of +/- 6 seconds.
 JW0019
 JW0019.The orthometric height was determined by differential leveling and
 JW0019.adjusted by the NATIONAL GEODETIC SURVEY
 JW0019.in June 1991.
 JW0019
 JW0019.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0019.GEOID18 height accuracy estimate available here.
 JW0019
 JW0019.Click photographs - Photos may exist for this station.
 JW0019
 JW0019.The dynamic height is computed by dividing the NAVD 88
 JW0019.geopotential number by the normal gravity value computed on the
 JW0019.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0019.degrees latitude (g = 980.6199 gals.).
 JW0019
 JW0019.The modeled gravity was interpolated from observed gravity values.
 JW0019
 JW0019;                    North         East    Units  Estimated Accuracy
 JW0019;SPC MD       -   224,190.      296,020.      MT  (+/- 180 meters Scaled)
 JW0019
 JW0019_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD391959(NAD 83)
 JW0019
 JW0019                          SUPERSEDED SURVEY CONTROL
 JW0019
 JW0019  NGVD 29 (??/??/92)  139.430  (m)          457.45   (f) ADJ UNCH    1 2
 JW0019
 JW0019.Superseded values are not recommended for survey control.
 JW0019
 JW0019.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0019.See file dsdata.pdf to determine how the superseded data were derived.
 JW0019
 JW0019_MARKER: DB = BENCH MARK DISK
 JW0019_SETTING: 80 = SET IN A BOULDER
 JW0019_STAMPING: BB 14 1935
 JW0019_MARK LOGO: CGS
 JW0019_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0019+STABILITY: SURFACE MOTION
 JW0019_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0019+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2007
 JW0019
 JW0019  HISTORY     - Date     Condition        Report By
 JW0019  HISTORY     - 1935     MONUMENTED       CGS
 JW0019  HISTORY     - 1941     GOOD             CGS
 JW0019  HISTORY     - 20070915 GOOD             GEOCAC
 JW0019
 JW0019                          STATION DESCRIPTION
 JW0019
 JW0019'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0019'2.4 MI SW FROM HANCOCK.
 JW0019'2.4 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JW0019'THE STATION AT HANCOCK, 13 RAILS EAST OF MILE-POST NO. 118,
 JW0019'108.5 FEET SOUTHWEST OF LONERS SIGN POST, 26.8 FEET SOUTH OF
 JW0019'THE SOUTH RAIL, 200 FEET EAST OF B.M. C-43 1941, 39.5 FEET
 JW0019'NORTHWEST OF THE 3RD. TELEGRAPH POLE EAST OF THE CROSSING, A
 JW0019'STANDARD DISK STAMPED BB-14 1935 AND SET IN A ROCK BOULDER ABOUT
 JW0019'5 FEET BELOW TRACK LEVEL, 3.7 FEET NORTH OF A WHITE MARKER
 JW0019'POST STENCILED U.S.B.M.
 JW0019
 JW0019                          STATION RECOVERY (2007)
 JW0019
 JW0019'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JW0019'ABOUT 2.4 MILES SW FROM HANCOCK ALONG THE PAVED WESTERN MARYLAND RAIL
 JW0019'TRAIL (FORMERLY WESTERN MD RR), EAST OF MILEPOST NO. 118, ABOUT 288
 JW0019'FEET EAST OF THE CENTERLINE OF A FORMER (BUT STILL DISCERNABLE) ROAD
 JW0019'CROSSING THE FORMER TRACK, 28 FEET SOUTH OF THE CENTERLINE OF THE RAIL
 JW0019'TRAIL PAVEMENT.  A STANDARD DISK STAMPED BB 4 1935 AND SET IN A
 JW0019'BOULDER ABOUT 5 FEET BELOW PATH LEVEL AND 5 INCHES ABOVE GROUND LEVEL.
 JW0019'VISIBLE FROM THE PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9043 ***********************************************************************
 HV9043  DESIGNATION -  BC 3
 HV9043  PID         -  HV9043
 HV9043  STATE/COUNTY-  MD/CALVERT
 HV9043  COUNTRY     -  US
 HV9043  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV9043
 HV9043                         *CURRENT SURVEY CONTROL
 HV9043  ______________________________________________________________________
 HV9043* NAD 83(1991) POSITION- 38 19 56.83356(N) 076 27 30.54083(W)   ADJUSTED
 HV9043* NAVD 88 ORTHO HEIGHT -     0.    (meters)        0.    (feet) SCALED
 HV9043  ______________________________________________________________________
 HV9043  GEOID HEIGHT    -        -34.372 (meters)                     GEOID18
 HV9043  LAPLACE CORR    -         -4.98  (seconds)                    DEFLEC18
 HV9043  HORZ ORDER      -  THIRD
 HV9043
 HV9043.The horizontal coordinates were established by classical geodetic methods
 HV9043.and adjusted by the National Geodetic Survey in January 1992.
 HV9043
 HV9043.The orthometric height was scaled from a topographic map.
 HV9043
 HV9043.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9043.GEOID18 height accuracy estimate available here.
 HV9043
 HV9043.Click photographs - Photos may exist for this station.
 HV9043
 HV9043.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9043
 HV9043. The following values were computed from the NAD 83(1991) position.
 HV9043
 HV9043;                    North         East     Units Scale Factor Converg.
 HV9043;SPC MD       -    74,045.722   447,346.662   MT  0.99999451   +0 20 23.5
 HV9043;SPC MD       -   242,931.67  1,467,669.84   sFT  0.99999451   +0 20 23.5
 HV9043;UTM  18      - 4,243,708.904   372,526.070   MT  0.99980012   -0 54 16.9
 HV9043
 HV9043!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9043!SPC MD       -   1.00000536  x   0.99999451  =   0.99999987
 HV9043!UTM  18      -   1.00000536  x   0.99980012  =   0.99980547
 HV9043
 HV9043_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7252643708(NAD 83)
 HV9043
 HV9043                          SUPERSEDED SURVEY CONTROL
 HV9043
 HV9043  NAD 83(1986)-  38 19 56.83322(N)    076 27 30.55786(W) AD(       ) 3
 HV9043
 HV9043.Superseded values are not recommended for survey control.
 HV9043
 HV9043.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9043.See file dsdata.pdf to determine how the superseded data were derived.
 HV9043
 HV9043_MARKER: N = NAIL
 HV9043_SETTING: 0 = UNSPECIFIED SETTING
 HV9043_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV9043_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV9043
 HV9043  HISTORY     - Date     Condition        Report By
 HV9043  HISTORY     - 1987     MONUMENTED       NOS
 HV9043
 HV9043                          STATION DESCRIPTION
 HV9043
 HV9043'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (REM)
 HV9043'THE STATION IS LOCATED ON THE MOST WESTERLY WOOD PIER OWNED BY
 HV9043'CALVERT MARINA,SOLOMONS,MD.
 HV9043'
 HV9043'THE STATION WAS ESTABLISHED BY BOAT.
 HV9043'
 HV9043'THE STATION IS A PK NAIL DRIVEN INTO THE WOOD DECK OF THE PIER,
 HV9043'BETWEEN THE FIRST AND SECOND SHORT FINGER PIERS AND NEAR THE CENTER
 HV9043'OF THE MAIN WOOD PIER 0.921 M(3.02 FT) EAST FROM EDGE OF PIER,
 HV9043'1.029 M(3.38 FT) WEST FROM EDGE OF PIER,1.397 M(4.58 FT) NORTHWEST
 HV9043'OF FOURTEENTH 12 IN DIA WOOD PILE FROM CONCRETE BKHD.
 HV9043'PERMISSION FOR ACCESS TO PROPERTY WAS OBTAINED FROM DOCK MASTER
 HV9043'PHONE 326-4251.
 HV9043'
 HV9043'HEIGHT OF LIGHT SHOWN WAS 1.50 METERS ABOVE THE MARK.
 HV9043'
 HV9043'DESCRIBED BY ED MARTIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1554 ***********************************************************************
 JW1554  DESIGNATION -  BC 4
 JW1554  PID         -  JW1554
 JW1554  STATE/COUNTY-  MD/ALLEGANY
 JW1554  COUNTRY     -  US
 JW1554  USGS QUAD   -  LONACONING (2016)
 JW1554
 JW1554                         *CURRENT SURVEY CONTROL
 JW1554  ______________________________________________________________________
 JW1554* NAD 83(1986) POSITION- 39 33 41.     (N) 078 59 08.     (W)   SCALED
 JW1554* NAVD 88 ORTHO HEIGHT -   445.243 (meters)     1460.77  (feet) ADJUSTED
 JW1554  ______________________________________________________________________
 JW1554  GEOID HEIGHT    -        -32.048 (meters)                     GEOID18
 JW1554  DYNAMIC HEIGHT  -        444.946 (meters)     1459.79  (feet) COMP
 JW1554  MODELED GRAVITY -    979,946.4   (mgal)                       NAVD 88
 JW1554
 JW1554  VERT ORDER      -  SECOND    CLASS II
 JW1554
 JW1554.The horizontal coordinates were scaled from a map and have
 JW1554.an estimated accuracy of +/- 6 seconds.
 JW1554
 JW1554.The orthometric height was determined by differential leveling and
 JW1554.adjusted by the NATIONAL GEODETIC SURVEY
 JW1554.in June 1991.
 JW1554
 JW1554.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1554.GEOID18 height accuracy estimate available here.
 JW1554
 JW1554.Click photographs - Photos may exist for this station.
 JW1554
 JW1554.The dynamic height is computed by dividing the NAVD 88
 JW1554.geopotential number by the normal gravity value computed on the
 JW1554.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1554.degrees latitude (g = 980.6199 gals.).
 JW1554
 JW1554.The modeled gravity was interpolated from observed gravity values.
 JW1554
 JW1554;                    North         East    Units  Estimated Accuracy
 JW1554;SPC MD       -   212,190.      229,380.      MT  (+/- 180 meters Scaled)
 JW1554
 JW1554_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD730810(NAD 83)
 JW1554
 JW1554                          SUPERSEDED SURVEY CONTROL
 JW1554
 JW1554.No superseded survey control is available for this station.
 JW1554
 JW1554_MARKER: DB = BENCH MARK DISK
 JW1554_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW1554_SP_SET: ABUTMENT
 JW1554_STAMPING: BC 4 1945
 JW1554_MARK LOGO: USGS
 JW1554_MAGNETIC: N = NO MAGNETIC MATERIAL
 JW1554_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1554_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW1554+SATELLITE: SATELLITE OBSERVATIONS - October 02, 1990
 JW1554
 JW1554  HISTORY     - Date     Condition        Report By
 JW1554  HISTORY     - 1945     MONUMENTED       USGS
 JW1554  HISTORY     - 19901002 GOOD             NGS
 JW1554
 JW1554                          STATION DESCRIPTION
 JW1554
 JW1554'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JW1554'IN LONACONING, AT THE INTERSECTION OF DETMOLD SCHOOL ROAD AND STATE
 JW1554'HIGHWAY 36, IN TOP OF AND 0.2 M (0.7 FT) SOUTHEAST OF THE NORTHWEST
 JW1554'END OF THE SOUTHWEST CONCRETE ABUTMENT OF THE WESTERN MARYLAND
 JW1554'RAILROAD BRIDGE NUMBER 2406 SPANNING GEORGES CREEK, 20.5 M (67.3 FT)
 JW1554'SOUTHWEST OF THE EXTENDED CENTER OF THE ROAD, 10.8 M (35.4 FT)
 JW1554'SOUTHEAST OF AND LEVEL WITH THE HIGHWAY CENTERLINE, AND 2.5 M
 JW1554'(8.2 FT) NORTHWEST OF THE NEAR RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5600 ***********************************************************************
 AE5600  DESIGNATION -  BC 4028
 AE5600  PID         -  AE5600
 AE5600  STATE/COUNTY-  MD/BALTIMORE
 AE5600  COUNTRY     -  US
 AE5600  USGS QUAD   -  PHOENIX (2016)
 AE5600
 AE5600                         *CURRENT SURVEY CONTROL
 AE5600  ______________________________________________________________________
 AE5600* NAD 83(1986) POSITION- 39 30 01.     (N) 076 31 44.     (W)   SCALED
 AE5600* NAVD 88 ORTHO HEIGHT -   171.020 (meters)      561.09  (feet) ADJUSTED
 AE5600  ______________________________________________________________________
 AE5600  GEOID HEIGHT    -        -32.554 (meters)                     GEOID18
 AE5600  DYNAMIC HEIGHT  -        170.930 (meters)      560.79  (feet) COMP
 AE5600  MODELED GRAVITY -    980,097.3   (mgal)                       NAVD 88
 AE5600
 AE5600  VERT ORDER      -  SECOND    CLASS II
 AE5600
 AE5600.The horizontal coordinates were scaled from a map and have
 AE5600.an estimated accuracy of +/- 6 seconds.
 AE5600
 AE5600.The orthometric height was determined by differential leveling and
 AE5600.adjusted by the NATIONAL GEODETIC SURVEY
 AE5600.in February 1998.
 AE5600
 AE5600.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5600.GEOID18 height accuracy estimate available here.
 AE5600
 AE5600.Click photographs - Photos may exist for this station.
 AE5600
 AE5600.The dynamic height is computed by dividing the NAVD 88
 AE5600.geopotential number by the normal gravity value computed on the
 AE5600.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5600.degrees latitude (g = 980.6199 gals.).
 AE5600
 AE5600.The modeled gravity was interpolated from observed gravity values.
 AE5600
 AE5600;                    North         East    Units  Estimated Accuracy
 AE5600;SPC MD       -   203,650.      440,520.      MT  (+/- 180 meters Scaled)
 AE5600
 AE5600_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ685734(NAD 83)
 AE5600
 AE5600                          SUPERSEDED SURVEY CONTROL
 AE5600
 AE5600.No superseded survey control is available for this station.
 AE5600
 AE5600_MARKER: Q = CHISELED SQUARE
 AE5600_SETTING: 30 = SET IN A LIGHT STRUCTURE
 AE5600_SP_SET: DROP INLET
 AE5600_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE5600_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AE5600_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AE5600+SATELLITE: SATELLITE OBSERVATIONS - July 07, 2002
 AE5600
 AE5600  HISTORY     - Date     Condition        Report By
 AE5600  HISTORY     - 1996     MONUMENTED       MCCRON
 AE5600  HISTORY     - 20020707 GOOD             USPS
 AE5600
 AE5600                          STATION DESCRIPTION
 AE5600
 AE5600'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5600'STATION IS LOCATED ABOUT 14.5 MI (23.3 KM) NORTHEAST OF THE CENTER OF
 AE5600'BALTIMORE AND ABOUT 1.0 MI (1.6 KM) SOUTH OF SWEET AIR.  TO REACH THE
 AE5600'STATION FROM THE I-695 (BELTWAY) OVERPASS OVER CROMWELL BRIDGE ROAD GO
 AE5600'NORTH ON CROMWELL BRIDGE ROAD FOR 2.7 MI (4.3 KM) TO A T INTERSECTION
 AE5600'WITH CUB HILL ROAD ON THE RIGHT AND GLEN ARM ROAD ON THE LEFT.  TURN
 AE5600'LEFT ON GLEN ARM ROAD AND GO NORTH FOR 0.7 MI (1.1 KM) TO THE
 AE5600'INTERSECTION WITH MANOR ROAD.  TURN LEFT ON MANOR ROAD AND GO NORTH
 AE5600'FOR 4.9 MI (7.9 KM) TO THE INTERSECTION WITH LAUREN KNOLL COURT AND
 AE5600'THE STATION ON THE LEFT.  STATION MARK IS A BOX CUT IN THE TOP
 AE5600'SOUTHEAST CORNER OF A CONCRETE DROP INLET.  IT IS 55.2 FT (16.8 M)
 AE5600'SOUTHEAST OF POWER POLE NO.  20632, 11.5 FT (3.5 M) SOUTHEAST OF THE
 AE5600'CENTERLINE OF LAUREN KNOLL COURT, 46.7 FT (14.2 M) SOUTHWEST OF THE
 AE5600'CENTERLINE OF MANOR ROAD, AND 14.5 FT (4.4 M) SOUTHWEST OF A GAS
 AE5600'VALVE.
 AE5600
 AE5600                          STATION RECOVERY (2002)
 AE5600
 AE5600'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 AE5600'3 FEET 10 INCHES S.W. OF STREET LIGHT POLE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1720 ***********************************************************************
 JW1720  DESIGNATION -  BC 47 RESET
 JW1720  PID         -  JW1720
 JW1720  STATE/COUNTY-  MD/GARRETT
 JW1720  COUNTRY     -  US
 JW1720  USGS QUAD   -  ACCIDENT (2016)
 JW1720
 JW1720                         *CURRENT SURVEY CONTROL
 JW1720  ______________________________________________________________________
 JW1720* NAD 83(1986) POSITION- 39 40 44.12   (N) 079 17 13.32   (W)   HD_HELD1
 JW1720* NAVD 88 ORTHO HEIGHT -   851.707 (meters)     2794.31  (feet) ADJUSTED
 JW1720  ______________________________________________________________________
 JW1720  GEOID HEIGHT    -        -31.424 (meters)                     GEOID18
 JW1720  DYNAMIC HEIGHT  -        851.148 (meters)     2792.47  (feet) COMP
 JW1720  MODELED GRAVITY -    979,941.1   (mgal)                       NAVD 88
 JW1720
 JW1720  VERT ORDER      -  SECOND    CLASS I
 JW1720
 JW1720.The horizontal coordinates were determined by differentially corrected
 JW1720.hand held GPS observations or other comparable positioning techniques
 JW1720.and have an estimated accuracy of +/- 3 meters.
 JW1720
 JW1720.The orthometric height was determined by differential leveling and
 JW1720.adjusted by the NATIONAL GEODETIC SURVEY
 JW1720.in April 1995.
 JW1720
 JW1720.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1720.GEOID18 height accuracy estimate available here.
 JW1720
 JW1720.Click photographs - Photos may exist for this station.
 JW1720
 JW1720.The dynamic height is computed by dividing the NAVD 88
 JW1720.geopotential number by the normal gravity value computed on the
 JW1720.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1720.degrees latitude (g = 980.6199 gals.).
 JW1720
 JW1720.The modeled gravity was interpolated from observed gravity values.
 JW1720
 JW1720;                    North         East    Units  Estimated Accuracy
 JW1720;SPC MD       -   225,838.4     203,800.9     MT  (+/- 3 meters HH1 GPS) 
 JW1720
 JW1720_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4690493524(NAD 83)
 JW1720
 JW1720                          SUPERSEDED SURVEY CONTROL
 JW1720
 JW1720.No superseded survey control is available for this station.
 JW1720
 JW1720_MARKER: DD = SURVEY DISK
 JW1720_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JW1720_STAMPING: BC 47 1945 RESET 1964 1965
 JW1720_MARK LOGO: USGS
 JW1720_PROJECTION: PROJECTING 8 CENTIMETERS
 JW1720_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1720_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW1720_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW1720+SATELLITE: SATELLITE OBSERVATIONS - February 07, 2025
 JW1720
 JW1720  HISTORY     - Date     Condition        Report By
 JW1720  HISTORY     - 1965     MONUMENTED       USGS
 JW1720  HISTORY     - 19921101 GOOD             MDSHA
 JW1720  HISTORY     - 20120710 GOOD             GEOCAC
 JW1720  HISTORY     - 20250207 GOOD             BASE9
 JW1720
 JW1720                          STATION DESCRIPTION
 JW1720
 JW1720'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1720'THE MARKER IS LOCATED ABOUT 2.3 MI (3.7 KM) WEST-SOUTHWEST OF KEYSERS
 JW1720'RIDGE, 3.8 MI (6.1 KM) NORTH-NORTHEAST OF ACCIDENT, AND 6.4 MI
 JW1720'(10.3 KM) EAST OF FRIENDSVILLE.  IT IS ON U.S. HIGHWAY 219
 JW1720'RIGHT-OF-WAY.
 JW1720'
 JW1720'TO REACH FROM A POINT WHERE U.S. HIGHWAY 219 CROSSES OVER INTERSTATE
 JW1720'HIGHWAY 68 AT EXIT NUMBER 14 NEAR KEYSERS RIDGE, GO SOUTHWEST ON U.S.
 JW1720'HIGHWAY 219 FOR 2.45 MI (3.94 KM) TO THE MARKER ON THE RIGHT.
 JW1720'
 JW1720'THE MARKER IS A USGS DISK SET IN A 6-INCH ROUND CONCRETE MONUMENT
 JW1720'WHICH PROJECTS 3-INCHES ABOVE THE GROUND.  IT IS 42.5 FT (13.0 M)
 JW1720'SOUTHEAST FROM THE CENTER OF THE ENTRANCE TO A REST AREA, 3.6 FT
 JW1720'(1.1 M) NORTHWEST OF A WITNESS POST, AND 103.0 FT (31.4 M) NORTHWEST
 JW1720'OF THE CENTERLINE OF U.S. HIGHWAY 219.
 JW1720
 JW1720                          STATION RECOVERY (2012)
 JW1720
 JW1720'RECOVERY NOTE BY GEOCACHING 2012 (DPB)
 JW1720'RECOVERED IN GOOD CONDITION.
 JW1720
 JW1720                          STATION RECOVERY (2025)
 JW1720
 JW1720'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2025 (RSD)
 JW1720'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4098 ***********************************************************************
 DS4098  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4098  DESIGNATION -  BC80
 DS4098  PID         -  DS4098
 DS4098  STATE/COUNTY-  MD/BALTIMORE
 DS4098  COUNTRY     -  US
 DS4098  USGS QUAD   -  ELLICOTT CITY (2016)
 DS4098
 DS4098                         *CURRENT SURVEY CONTROL
 DS4098  ______________________________________________________________________
 DS4098* NAD 83(2011) POSITION- 39 16 02.30040(N) 076 45 35.01613(W)   ADJUSTED
 DS4098* NAD 83(2011) ELLIP HT-    90.674 (meters)        (08/29/25)   ADJUSTED
 DS4098* NAD 83(2011) EPOCH   -  2010.00
 DS4098* NAVD 88 ORTHO HEIGHT -   122.98  (meters)      403.5   (feet) GPS OBS
 DS4098  ______________________________________________________________________
 DS4098  GEOID HEIGHT    -        -32.304 (meters)                     GEOID18
 DS4098  NAD 83(2011) X  -  1,132,502.805 (meters)                     COMP
 DS4098  NAD 83(2011) Y  - -4,813,229.845 (meters)                     COMP
 DS4098  NAD 83(2011) Z  -  4,015,393.155 (meters)                     COMP
 DS4098  LAPLACE CORR    -         -3.85  (seconds)                    DEFLEC18
 DS4098
 DS4098  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4098  Standards:
 DS4098         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4098            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4098  -------------------------------------------------------------------
 DS4098  NETWORK    0.72   1.67           0.32   0.26   0.85     -0.02818732
 DS4098  -------------------------------------------------------------------
 DS4098  Click here for local accuracies and other accuracy information.
 DS4098
 DS4098.The horizontal coordinates were established by GPS observations
 DS4098.and adjusted by the MD DOT HIGHWAY ADMIN in August 2025.
 DS4098
 DS4098.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4098.frame has been affixed to the stable North American tectonic plate 
 DS4098
 DS4098.The horizontal coordinates are valid at the epoch date displayed above
 DS4098.which is a decimal equivalence of Year/Month/Day.
 DS4098
 DS4098.The orthometric height was determined by GPS observations and a
 DS4098.high-resolution geoid model using precise GPS observation and
 DS4098.processing techniques.
 DS4098
 DS4098.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4098.GEOID18 height accuracy estimate available here.
 DS4098
 DS4098.Click photographs - Photos may exist for this station.
 DS4098
 DS4098.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4098
 DS4098.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4098
 DS4098.The ellipsoidal height was determined by GPS observations
 DS4098.and is referenced to NAD 83.
 DS4098
 DS4098. The following values were computed from the NAD 83(2011) position.
 DS4098
 DS4098;                    North         East     Units Scale Factor Converg.
 DS4098;SPC MD       -   177,708.083   420,734.888   MT  0.99997314   +0 09 02.9
 DS4098;SPC MD       -   583,030.60  1,380,361.05   sFT  0.99997314   +0 09 02.9
 DS4098;UTM  18      - 4,347,916.250   348,192.383   MT  0.99988376   -1 06 50.4
 DS4098
 DS4098!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4098!SPC MD       -   0.99998577  x   0.99997314  =   0.99995891
 DS4098!UTM  18      -   0.99998577  x   0.99988376  =   0.99986954
 DS4098
 DS4098_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4819247916(NAD 83)
 DS4098
 DS4098                          SUPERSEDED SURVEY CONTROL
 DS4098
 DS4098.No superseded survey control is available for this station.
 DS4098
 DS4098_MARKER: DD = SURVEY DISK
 DS4098_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS4098_STAMPING: BC80 9/14
 DS4098_MARK LOGO: MD-027
 DS4098_PROJECTION: RECESSED 2 CENTIMETERS
 DS4098_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS4098+STABILITY: SURFACE MOTION
 DS4098_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4098+SATELLITE: SATELLITE OBSERVATIONS - November 21, 2024
 DS4098
 DS4098  HISTORY     - Date     Condition        Report By
 DS4098  HISTORY     - 20140901 MONUMENTED       MD-027
 DS4098  HISTORY     - 20241121 GOOD             MDSHA
 DS4098
 DS4098                          STATION DESCRIPTION
 DS4098
 DS4098'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 DS4098'THE MARK IS LOCATED ABOUT 8.1 MI (13.0 KM) WEST-SOUTHWEST OF
 DS4098'BALTIMORE, 4.1 MI (6.6 KM) NORTHWEST OF RELAY AND 2.1 MI (3.4 KM) EAST
 DS4098'OF ELLICOTT CITY.
 DS4098'
 DS4098'TO REACH THE MARK FROM THE INTERSECTION OF BALTIMORE NATIONAL PIKE (US
 DS4098'40) AND ROLLING ROAD PROCEED SOUTH ON ROLLING ROAD FOR 1.77 KM (1.10
 DS4098'MI) TO THE INTERSECTION WITH FREDERICK ROAD(MD 44).  TURN RIGHT ONTO
 DS4098'FREDERICK ROAD AND PROCEED FOR 0.28 KM (0.17 MI) TO THE INTERSECTION
 DS4098'WITH DEVERE LANE AND THE MARK ON THE RIGHT.
 DS4098'
 DS4098'THE MARK IS 64.7 FT (19.7 M) SOUTHEAST OF A UTILITY POLE NUMBERED G
 DS4098'AND E 811317, 46.3 FT (14.1 M) EAST OF A FIRE HYDRANT, 43.1 FT (13.1
 DS4098'M) NORTH-NORTHWEST OF THE CENTERLINE OF FREDERICK, 33.0 FT (10.1 M)
 DS4098'EAST OF A WATER VALVE, 20.0 FT (6.1 M) EAST OF THE CENTERLINE OF
 DS4098'DEVERE LANE, 16.9 FT (5.2 M) NORTH OF A SEWER MANHOLE SET IN THE TOP
 DS4098'OF A 6-IN (15 CM) ROUND CONCRETE POST AND ABOUT 0.5 FT (15 CM) HIGHER
 DS4098'THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH6275 ***********************************************************************
 DH6275  DESIGNATION -  BCO
 DH6275  PID         -  DH6275
 DH6275  STATE/COUNTY-  MD/BALTIMORE
 DH6275  COUNTRY     -  US
 DH6275  USGS QUAD   -  HEREFORD (2016)
 DH6275
 DH6275                         *CURRENT SURVEY CONTROL
 DH6275  ______________________________________________________________________
 DH6275* NAD 83(1986) POSITION- 39 30 16.49   (N) 076 42 42.72   (W)   HD_HELD1
 DH6275* NAVD 88 ORTHO HEIGHT -   173.465 (meters)      569.11  (feet) ADJUSTED
 DH6275  ______________________________________________________________________
 DH6275  GEOID HEIGHT    -        -32.247 (meters)                     GEOID18
 DH6275  DYNAMIC HEIGHT  -        173.377 (meters)      568.82  (feet) COMP
 DH6275  MODELED GRAVITY -    980,113.3   (mgal)                       NAVD 88
 DH6275
 DH6275  VERT ORDER      -  SECOND    CLASS I
 DH6275
 DH6275.The horizontal coordinates were determined by differentially corrected
 DH6275.hand held GPS observations or other comparable positioning techniques
 DH6275.and have an estimated accuracy of +/- 3 meters.
 DH6275
 DH6275.The orthometric height was determined by differential leveling and
 DH6275.adjusted by the NATIONAL GEODETIC SURVEY
 DH6275.in June 2006.
 DH6275
 DH6275.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH6275.GEOID18 height accuracy estimate available here.
 DH6275
 DH6275.Click photographs - Photos may exist for this station.
 DH6275
 DH6275.The dynamic height is computed by dividing the NAVD 88
 DH6275.geopotential number by the normal gravity value computed on the
 DH6275.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH6275.degrees latitude (g = 980.6199 gals.).
 DH6275
 DH6275.The modeled gravity was interpolated from observed gravity values.
 DH6275
 DH6275;                    North         East    Units  Estimated Accuracy
 DH6275;SPC MD       -   204,062.6     424,781.9     MT  (+/- 3 meters HH1 GPS) 
 DH6275
 DH6275_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5282074171(NAD 83)
 DH6275
 DH6275                          SUPERSEDED SURVEY CONTROL
 DH6275
 DH6275.No superseded survey control is available for this station.
 DH6275
 DH6275_MARKER: DD = SURVEY DISK
 DH6275_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DH6275_STAMPING: SHA 327 1999
 DH6275_MARK LOGO: MD-005
 DH6275_PROJECTION: FLUSH
 DH6275_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH6275_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DH6275+STABILITY: SURFACE MOTION
 DH6275_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH6275+SATELLITE: SATELLITE OBSERVATIONS - February 13, 2025
 DH6275
 DH6275  HISTORY     - Date     Condition        Report By
 DH6275  HISTORY     - 1999     MONUMENTED       MD-005
 DH6275  HISTORY     - 20250213 GOOD             MDSHA
 DH6275
 DH6275                          STATION DESCRIPTION
 DH6275
 DH6275'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1999
 DH6275'THE STATION IS LOCATED ABOUT 3.1 MILES (5.0 KM) NORTHWEST OF HUNT
 DH6275'VALLEY, 2.5 MILES (4.0 KM) SOUTHEAST OF BUTLER AND 6.7 MILES (10.8 KM)
 DH6275'NORTHEAST OF REISTERSTOWN.  TO REACH THE STATION FROM THE INTERSECTION
 DH6275'OF JOPPA ROAD, JONES FALLS EXPRESSWAY AND MARYLAND STATE HIGHWAY 25
 DH6275'(FALLS ROAD) IN BROOKLANDVILLE, PROCEED NORTHWEST ALONG MARYLAND STATE
 DH6275'HIGHWAY 25 FOR 6.20 TO THE INTERSECTION WITH SHAWAN ROAD.  CONTINUE
 DH6275'NORTHWEST ALONG MARYLAND STATE HIGHWAY 25 FOR 0.65 MILES (1.05 KM) TO
 DH6275'GEIST ROAD LEADING WEST AND THE STATION ON THE LEFT.  IT IS A
 DH6275'BALTIMORE COUNTY SURVEY DISK SET IN THE TOP OF A 10 INCH ROUND
 DH6275'CONCRETE MONUMENT, 27.4 FEET (8.4 M) WEST OF THE CENTER LINE OF THE
 DH6275'HIGHWAY, 27.3 FEET (8.3 M) SOUTH OF THE CENTER OF GEIST ROAD, 18.4
 DH6275'FEET (5.6 M) SOUTHEAST OF GUY POLE WITH NO NUMBERS, 61.3 FEET (18.7 M)
 DH6275'SOUTHEAST AND ACROSS GEIST ROAD FOR A TELEPHONE JUNCTION BOX, SET
 DH6275'FLUSH WITH THE GROUND AND 4 FEET (1.2 M) HIGHER THAN THE SURFACE OF
 DH6275'THE HIGHWAY.
 DH6275
 DH6275                          STATION RECOVERY (2025)
 DH6275
 DH6275'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DH6275'THE MARK IS 19.6 FT (6.0 M) EAST-SOUTHEAST OF A UTILITY POLE NUMBERED
 DH6275'BELOW THE GROUND AND E 183033, 13.4 FT (4.1 M) SOUTH-SOUTHEAST OF A
 DH6275'STOP SIGN, 6.7 FT (2.0 M) SOUTH OF A STREET SIGN SET IN THE TOP OF A
 DH6275'10-IN (25 CM) ROUND CONCRETE POST AND ABOUT 4 FT (1.2 M) HIGHER THAN
 DH6275'THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4228 ***********************************************************************
 DS4228  DESIGNATION -  BCS 21155
 DS4228  PID         -  DS4228
 DS4228  STATE/COUNTY-  MD/CARROLL
 DS4228  COUNTRY     -  US
 DS4228  USGS QUAD   -  LIBERTYTOWN (2016)
 DS4228
 DS4228                         *CURRENT SURVEY CONTROL
 DS4228  ______________________________________________________________________
 DS4228* NAD 83(2011) POSITION- 39 23 02.43904(N) 077 09 08.88526(W)   ADJUSTED
 DS4228* NAD 83(2011) ELLIP HT-   202.272 (meters)        (11/28/25)   ADJUSTED
 DS4228* NAD 83(2011) EPOCH   -  2010.00
 DS4228* NAVD 88 ORTHO HEIGHT -   234.2   (meters)      768.    (feet) GPS OBS
 DS4228  ______________________________________________________________________
 DS4228  GEOID HEIGHT    -        -31.966 (meters)                     GEOID18
 DS4228  NAD 83(2011) X  -  1,097,676.902 (meters)                     COMP
 DS4228  NAD 83(2011) Y  - -4,812,958.059 (meters)                     COMP
 DS4228  NAD 83(2011) Z  -  4,025,486.929 (meters)                     COMP
 DS4228  LAPLACE CORR    -          3.00  (seconds)                    DEFLEC18
 DS4228
 DS4228  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4228  Standards:
 DS4228         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4228            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4228  -------------------------------------------------------------------
 DS4228  NETWORK    0.65   1.23           0.31   0.20   0.63     -0.06262205
 DS4228  -------------------------------------------------------------------
 DS4228  Click here for local accuracies and other accuracy information.
 DS4228
 DS4228.The horizontal coordinates were established by GPS observations
 DS4228.and adjusted by the MD DOT HIGHWAY ADMIN in November 2025.
 DS4228
 DS4228.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4228.frame has been affixed to the stable North American tectonic plate 
 DS4228
 DS4228.The horizontal coordinates are valid at the epoch date displayed above
 DS4228.which is a decimal equivalence of Year/Month/Day.
 DS4228
 DS4228.The orthometric height was determined by GPS observations and a
 DS4228.high-resolution geoid model.
 DS4228
 DS4228.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4228.GEOID18 height accuracy estimate available here.
 DS4228
 DS4228.Click photographs - Photos may exist for this station.
 DS4228
 DS4228.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4228
 DS4228.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4228
 DS4228.The ellipsoidal height was determined by GPS observations
 DS4228.and is referenced to NAD 83.
 DS4228
 DS4228. The following values were computed from the NAD 83(2011) position.
 DS4228
 DS4228;                    North         East     Units Scale Factor Converg.
 DS4228;SPC MD       -   190,648.324   386,864.074   MT  0.99998912   -0 05 44.5
 DS4228;SPC MD       -   625,485.38  1,269,236.55   sFT  0.99998912   -0 05 44.5
 DS4228;UTM  18      - 4,361,602.170   314,617.102   MT  1.00002315   -1 21 58.2
 DS4228
 DS4228!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4228!SPC MD       -   0.99996827  x   0.99998912  =   0.99995739
 DS4228!UTM  18      -   0.99996827  x   1.00002315  =   0.99999142
 DS4228
 DS4228_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1461761602(NAD 83)
 DS4228
 DS4228                          SUPERSEDED SURVEY CONTROL
 DS4228
 DS4228.No superseded survey control is available for this station.
 DS4228
 DS4228_MARKER: DB = BENCH MARK DISK
 DS4228_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS4228_STAMPING: BCS 21155 2025
 DS4228_MARK LOGO: MDSHA
 DS4228_PROJECTION: FLUSH
 DS4228_MAGNETIC: N = NO MAGNETIC MATERIAL
 DS4228_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS4228+STABILITY: SURFACE MOTION
 DS4228_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4228+SATELLITE: SATELLITE OBSERVATIONS - July 23, 2025
 DS4228
 DS4228  HISTORY     - Date     Condition        Report By
 DS4228  HISTORY     - 20250723 MONUMENTED       MDSHA
 DS4228
 DS4228                          STATION DESCRIPTION
 DS4228
 DS4228'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4228'THE MARK IS LOCATED ABOUT 6.8 MI (10.9 KM) SOUTHWEST OF WINFIELD, 6.3
 DS4228'MI (10.1 KM) EAST OF NEW MARKET AND 5.1 MI (8.2 KM) WEST-NORTHWEST OF
 DS4228'WOODBINE.
 DS4228'
 DS4228'TO REACH THE MARK FROM THE INTERSECTION OF MD 27 (RIDGE ROAD) AND
 DS4228'WATERSVILLE ROAD PROCEED NORTH-WEST ON WATERSVILLE ROAD FOR 0.86 KM
 DS4228'(0.53 MI) TO THE INTERSECTION WITH SCOTCH HEATHER AVENUE.TURN LEFT ON
 DS4228'SCOTCH HEATHER AVENUE AND PROCEED FOR 0.09 KM (0.06 MI) TO THE
 DS4228'INTERSECTION WITH BUFFALO ROAD. TURN RIGHT ON BUFFALO ROAD AND PROCEED
 DS4228'FOR 0.05 KM (0.03 MI) (0.06 MI) TO THE MARK ON THE LEFT. THE MARK IS
 DS4228'ACROSS THE STREET FROM THE ENTRANCE TO SUMMIT RIDGE PARK.
 DS4228'
 DS4228'THE MARK IS 154 FT (46.9 M) NORTH-NORTHWEST OF THE EXTENDED
 DS4228'INTERSECTION OF SCOTCH HEATHER AVENUE AND BUFFALO ROAD, 153.4 FT (46.8
 DS4228'M) SOUTHEAST OF A UTILITY POLE NUMBERED F74846, 44.5 FT (13.6 M)
 DS4228'NORTH-NORTHWEST OF A UTILITY POLE NUMBERED F21036, 21.5 FT (6.6 M)
 DS4228'SOUTHWEST OF THE CENTERLINE OF BUFFALO ROAD SET IN THE TOP OF A 12-IN
 DS4228'(30 CM) ROUND CONCRETE POST AND ABOUT LEVEL WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4229 ***********************************************************************
 DS4229  DESIGNATION -  BCS 21155 AZ MK
 DS4229  PID         -  DS4229
 DS4229  STATE/COUNTY-  MD/CARROLL
 DS4229  COUNTRY     -  US
 DS4229  USGS QUAD   -  LIBERTYTOWN (2016)
 DS4229
 DS4229                         *CURRENT SURVEY CONTROL
 DS4229  ______________________________________________________________________
 DS4229* NAD 83(2011) POSITION- 39 23 07.98263(N) 077 09 14.69419(W)   ADJUSTED
 DS4229* NAD 83(2011) ELLIP HT-   193.063 (meters)        (11/28/25)   ADJUSTED
 DS4229* NAD 83(2011) EPOCH   -  2010.00
 DS4229* NAVD 88 ORTHO HEIGHT -   225.0   (meters)      738.    (feet) GPS OBS
 DS4229  ______________________________________________________________________
 DS4229  GEOID HEIGHT    -        -31.972 (meters)                     GEOID18
 DS4229  NAD 83(2011) X  -  1,097,515.655 (meters)                     COMP
 DS4229  NAD 83(2011) Y  - -4,812,876.263 (meters)                     COMP
 DS4229  NAD 83(2011) Z  -  4,025,613.227 (meters)                     COMP
 DS4229  LAPLACE CORR    -          3.13  (seconds)                    DEFLEC18
 DS4229
 DS4229  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4229  Standards:
 DS4229         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4229            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4229  -------------------------------------------------------------------
 DS4229  NETWORK    0.63   1.20           0.30   0.19   0.61     -0.06662937
 DS4229  -------------------------------------------------------------------
 DS4229  Click here for local accuracies and other accuracy information.
 DS4229
 DS4229.The horizontal coordinates were established by GPS observations
 DS4229.and adjusted by the MD DOT HIGHWAY ADMIN in November 2025.
 DS4229
 DS4229.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4229.frame has been affixed to the stable North American tectonic plate 
 DS4229
 DS4229.The horizontal coordinates are valid at the epoch date displayed above
 DS4229.which is a decimal equivalence of Year/Month/Day.
 DS4229
 DS4229.The orthometric height was determined by GPS observations and a
 DS4229.high-resolution geoid model.
 DS4229
 DS4229.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4229.GEOID18 height accuracy estimate available here.
 DS4229
 DS4229.Click photographs - Photos may exist for this station.
 DS4229
 DS4229.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4229
 DS4229.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4229
 DS4229.The ellipsoidal height was determined by GPS observations
 DS4229.and is referenced to NAD 83.
 DS4229
 DS4229. The following values were computed from the NAD 83(2011) position.
 DS4229
 DS4229;                    North         East     Units Scale Factor Converg.
 DS4229;SPC MD       -   190,819.518   386,725.343   MT  0.99998936   -0 05 48.1
 DS4229;SPC MD       -   626,047.04  1,268,781.40   sFT  0.99998936   -0 05 48.1
 DS4229;UTM  18      - 4,361,776.404   314,482.196   MT  1.00002377   -1 22 02.0
 DS4229
 DS4229!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4229!SPC MD       -   0.99996971  x   0.99998936  =   0.99995907
 DS4229!UTM  18      -   0.99996971  x   1.00002377  =   0.99999348
 DS4229
 DS4229_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1448261776(NAD 83)
 DS4229
 DS4229                          SUPERSEDED SURVEY CONTROL
 DS4229
 DS4229.No superseded survey control is available for this station.
 DS4229
 DS4229_MARKER: DD = SURVEY DISK
 DS4229_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS4229_STAMPING: BCS 21155 AZ MK 2025
 DS4229_MARK LOGO: MDSHA
 DS4229_PROJECTION: FLUSH
 DS4229_MAGNETIC: N = NO MAGNETIC MATERIAL
 DS4229_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS4229+STABILITY: SURFACE MOTION
 DS4229_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4229+SATELLITE: SATELLITE OBSERVATIONS - July 23, 2025
 DS4229
 DS4229  HISTORY     - Date     Condition        Report By
 DS4229  HISTORY     - 20250723 MONUMENTED       MDSHA
 DS4229
 DS4229                          STATION DESCRIPTION
 DS4229
 DS4229'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4229'THE MARK IS LOCATED ABOUT 6.8 MI (10.9 KM) SOUTHWEST OF WINFIELD, 6.3
 DS4229'MI (10.1 KM) EAST OF NEW MARKET AND 5.1 MI (8.2 KM) WEST-NORTHWEST OF
 DS4229'WOODBINE.
 DS4229'
 DS4229'TO REACH THE MARK FROM THE INTERSECTION OF MD 27 (RIDGE ROAD) AND
 DS4229'WATERSVILLE ROAD PROCEED NORTH-WEST ON WATERSVILLE ROAD FOR 0.86 KM
 DS4229'(0.53 MI) TO THE INTERSECTION WITH SCOTCH HEATHER AVENUE.  TURN LEFT
 DS4229'ON SCOTCH HEATHER AVENUE AND PROCEED FOR 0.09 KM (0.06 MI) TO THE
 DS4229'INTERSECTION WITH BUFFALO ROAD.  TURN RIGHT ON BUFFALO ROAD AND
 DS4229'PROCEED FOR 0.26 KM (0.16 MI) (0.06 MI) TO THE MARK ON THE LEFT.
 DS4229'
 DS4229'THE MARK IS 176 FT (53.6 M) NORTHWEST OF A UTILITY POLE WITH NO
 DS4229'DESIGNATION, 52.7 FT (16.1 M) NORTHWEST OF A UTILITY POLE NUMBERED
 DS4229'VZ15, 21.3 FT (6.5 M) WEST OF THE CENTERLINE OF BUFFALO ROAD, 20.3 FT
 DS4229'(6.2 M) SOUTH-SOUTHEAST OF A UTILITY POLE NUMBERED F21039 SET IN THE
 DS4229'TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND ABOUT LEVEL WITH THE
 DS4229'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3533 ***********************************************************************
 JU3533  DESIGNATION -  BDY MON 55 DEL MD
 JU3533  PID         -  JU3533
 JU3533  STATE/COUNTY-  MD/KENT
 JU3533  COUNTRY     -  US
 JU3533  USGS QUAD   -  MILLINGTON (2016)
 JU3533
 JU3533                         *CURRENT SURVEY CONTROL
 JU3533  ______________________________________________________________________
 JU3533* NAD 83(1991) POSITION- 39 15 28.03912(N) 075 45 24.99908(W)   ADJUSTED
 JU3533* NAVD 88 ORTHO HEIGHT -    19.7   (meters)       65.    (feet) VERTCON3
 JU3533  ______________________________________________________________________
 JU3533  GEOID HEIGHT    -        -33.754 (meters)                     GEOID18
 JU3533  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC18
 JU3533  HORZ ORDER      -  SECOND
 JU3533
 JU3533.The horizontal coordinates were established by classical geodetic methods
 JU3533.and adjusted by the National Geodetic Survey in January 1992.
 JU3533
 JU3533.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3533.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3533
 JU3533.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3533.GEOID18 height accuracy estimate available here.
 JU3533
 JU3533.Click photographs - Photos may exist for this station.
 JU3533
 JU3533.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3533
 JU3533. The following values were computed from the NAD 83(1991) position.
 JU3533
 JU3533;                    North         East     Units Scale Factor Converg.
 JU3533;SPC MD       -   177,354.678   507,283.305   MT  0.99997202   +0 46 48.7
 JU3533;SPC MD       -   581,871.14  1,664,311.98   sFT  0.99997202   +0 46 48.7
 JU3533;UTM  18      - 4,345,657.298   434,692.999   MT  0.99965251   -0 28 44.5
 JU3533
 JU3533!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3533!SPC MD       -   1.00000221  x   0.99997202  =   0.99997423
 JU3533!UTM  18      -   1.00000221  x   0.99965251  =   0.99965472
 JU3533
 JU3533_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3469245657(NAD 83)
 JU3533
 JU3533                          SUPERSEDED SURVEY CONTROL
 JU3533
 JU3533  NAD 83(1986)-  39 15 28.03054(N)    075 45 25.00850(W) AD(       ) 2
 JU3533  NAD 27      -  39 15 27.63090(N)    075 45 26.25200(W) AD(       ) 2
 JU3533  NGVD 29 (07/19/86)   19.9    (m)           65.     (f) VERT ANG       
 JU3533
 JU3533.Superseded values are not recommended for survey control.
 JU3533
 JU3533.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3533.See file dsdata.pdf to determine how the superseded data were derived.
 JU3533
 JU3533_MARKER: X = CHISELED CROSS
 JU3533_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JU3533_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3533_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3533+SATELLITE: SATELLITE OBSERVATIONS - December 12, 2003
 JU3533
 JU3533  HISTORY     - Date     Condition        Report By
 JU3533  HISTORY     - 1961     MONUMENTED       CGS
 JU3533  HISTORY     - 19960928 GOOD             USPSQD
 JU3533  HISTORY     - 20031212 GOOD             GEOCAC
 JU3533
 JU3533                          STATION DESCRIPTION
 JU3533
 JU3533'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3533'THE STATION IS LOCATED IN A CULTIVATED FIELD ALONG THE SOUTH
 JU3533'SIDE OF STATE HIGHWAY 6 ABOUT 5.5 MILES NORTHWEST OF KENTON,
 JU3533'DELAWARE AND 4.5 MILES EAST OF MILLINGTON, MARYLAND.  IT IS A
 JU3533'12-INCH SQUARE LIMESTONE MONUMENT PROJECTING ABOUT 30 INCHES
 JU3533'ABOVE THE SURFACE OF THE GROUND.  IT HAS THE LETTER P CUT IN THE
 JU3533'EAST SIDE AND THE LETTER M ON THE WEST SIDE.  THE MONUMENT IS
 JU3533'SITTING PLUMB AND IN GOOD CONDITION.  A SMALL CROSS WAS
 JU3533'INSCRIBED IN ITS TOP AND CENTER FOR TRAVERSE PURPOSE.  IT IS
 JU3533'98.0 FEET SOUTHWEST OF A STANDARD METAL WITNESS POST AND
 JU3533'MARKER, 96.0 FEET SOUTH OF THE CENTERLINE OF STATE HIGHWAY 6
 JU3533'AND 67.0 FEET SOUTH OF THE DELAWARE AND MARYLAND METAL SIGN.
 JU3533'
 JU3533'TO REACH STATION KENT FROM THE CROSSROAD IN MILLINGTON, GO
 JU3533'EASTERLY ON STATE HIGHWAY 291 FOR 4.6 MILES TO THE
 JU3533'DELAWARE-MARYLAND STATE LINE AND THE STATION ON THE RIGHT,
 JU3533'CONTINUE EASTERLY ON HIGHWAY FOR 0.65 MILES TO THE AZIMUTH
 JU3533'MARK ON THE LEFT.
 JU3533'
 JU3533'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION KENT,
 JU3533'DISTANCE BEING 30.273 METERS AND (99.32 FEET) SOUTHWEST OF
 JU3533'STATION KENT.
 JU3533
 JU3533                          STATION RECOVERY (1996)
 JU3533
 JU3533'RECOVERY NOTE BY US POWER SQUADRON 1996
 JU3533'RECOVERED IN GOOD CONDITION.
 JU3533
 JU3533                          STATION RECOVERY (2003)
 JU3533
 JU3533'RECOVERY NOTE BY GEOCACHING 2003 (WD)
 JU3533'BOUNDARY MONUMENT 55 DE-MD IS AN 11.5-INCH X 11.5-INCH LIMESTONE SHAFT
 JU3533'THAT PROJECTS 25.5 INCHES AND IS IN GOOD CONDITION.  ACCORDING TO THE
 JU3533'DELAWARE GEOLOGICAL SURVEY, THE MASON-DIXON TANGENT LINE SURVEY SET
 JU3533'THIS BOUNDARY MONUMENT STONE IN 1766.  THE 1961 CGS DESCRIPTION IS
 JU3533'INCORRECT.
 JU3533'THE STONE DOES NOT HAVE THE LETTER P CUT INTO THE EAST SIDE AND THE
 JU3533'LETTER M CUT INTO THE WEST SIDE.  IT IS A CROWN STONE WITH THE PENN
 JU3533'FAMILY ARMORIAL CREST CUT INTO THE EAST FACE AND THE CALVERT FAMILY
 JU3533'CREST CUT INTO THE WEST FACE.  THE CALVERT FAMILY CREST ON THE WEST
 JU3533'FACE IS VERY WEATHERED AND IN POOR CONDITION. THE PENN FAMILY CREST ON
 JU3533'THE EAST FACE IS WEATHERED BUT IN GOOD CONDITION.
 JU3533'THE STONE LEANS ABOUT TWO DEGREES TO THE WEST.  THE FLUTING IS VERY
 JU3533'WEATHERED BUT VISIBLE ON ALL SIDES, EXCEPT WHERE LOST TO CHIPPING.
 JU3533'THE TOP IS ROUGHLY PYRAMIDAL, BUT WELL WEATHERED AND ROUNDED.  THERE
 JU3533'IS A SMALL CHISELED CROSS NEAR THE CENTER OF THE TOP, BUT IT IS BARELY
 JU3533'DISCERNABLE.  THE LOWER THIRD OF THE STONE IS OBSCURED BY THICK
 JU3533'UNDERGROWTH.
 JU3533'THE STONE IS LOCATED AT THE SOUTH EDGE OF A LARGE FIELD OPENING ON THE
 JU3533'SOUTH SIDE OF MD RTE 291/DE RTE 6, AND AT THE NORTH END OF A
 JU3533'NORTH-SOUTH HEDGEROW THAT SEPARATES TWO CULTIVATED FIELDS. THE
 JU3533'DELAWARE SIDE OF THE FIELD ENTRANCE IS IN THE BLACKISTON WILDLIFE AREA
 JU3533'RESERVE.  THE STONE IS SURROUNDED BY THREE I-BEAMS, EACH OF WHICH
 JU3533'PROJECTS ABOUT THREE FEET.
 JU3533'EACH ARE LOCATED ABOUT 1.3 FEET (0.40 M) FROM THE STONE AND ARE SET
 JU3533'NORTHWEST, NORTHEAST AND DUE SOUTH OF THE STONE, RESPECTIVELY.  THE
 JU3533'STONE IS LOCATED 79 FEET (24.08 M) SOUTH OF THE SOUTH EDGE OF PAVEMENT
 JU3533'OF MD RTE 291/DE RTE 6.
 JU3533'THE STONE LIES 1.3 FEET (0.40 M) SOUTH OF AN ORANGE CARSONITE WITNESS
 JU3533'POST, 4.6 FEET (1.40 M) NORTHEAST OF A SIX-INCH CYPRESS TREE, 4.0 FEET
 JU3533'(1.22 M) NORTHWEST OF A SIX-INCH TREE, 118.3 FEET (36.06 M) SOUTH OF A
 JU3533'ROUND METAL POLE SUPPORTING A HISTORICAL MARKER THAT DESCRIBES THE
 JU3533'MASON AND DIXON SURVEY.
 JU3533'IT IS 50.8 FEET (15.48 M) SOUTHWEST OF THE MORE SOUTHERLY OF TWO FOUR
 JU3533'INCH BY FOUR INCH TIMBERS THAT SUPPORT A SIGN FOR THE WILDLIFE AREA,
 JU3533'AND 65.2 FEET (19.87 M) SOUTH OF THE SOUTH MOST METAL LEG OF A BLUE
 JU3533'SIGN THAT INDICATES THE DE-MD BOUNDARY.  THE TO REACH DIRECTIONS ARE
 JU3533'ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3535 ***********************************************************************
 JU3535  DESIGNATION -  BDY MON 56 DEL MD
 JU3535  PID         -  JU3535
 JU3535  STATE/COUNTY-  MD/KENT
 JU3535  COUNTRY     -  US
 JU3535  USGS QUAD   -  MILLINGTON (2016)
 JU3535
 JU3535                         *CURRENT SURVEY CONTROL
 JU3535  ______________________________________________________________________
 JU3535* NAD 83(1991) POSITION- 39 16 20.42137(N) 075 45 29.21531(W)   ADJUSTED
 JU3535* NAVD 88 ORTHO HEIGHT -    17.2   (meters)       56.    (feet) VERTCON3
 JU3535  ______________________________________________________________________
 JU3535  GEOID HEIGHT    -        -33.725 (meters)                     GEOID18
 JU3535  LAPLACE CORR    -         -2.24  (seconds)                    DEFLEC18
 JU3535  HORZ ORDER      -  SECOND
 JU3535
 JU3535.The horizontal coordinates were established by classical geodetic methods
 JU3535.and adjusted by the National Geodetic Survey in January 1992.
 JU3535
 JU3535.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3535.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3535
 JU3535.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3535.GEOID18 height accuracy estimate available here.
 JU3535
 JU3535.Click photographs - Photos may exist for this station.
 JU3535
 JU3535.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3535
 JU3535. The following values were computed from the NAD 83(1991) position.
 JU3535
 JU3535;                    North         East     Units Scale Factor Converg.
 JU3535;SPC MD       -   178,968.527   507,160.257   MT  0.99997375   +0 46 46.0
 JU3535;SPC MD       -   587,165.91  1,663,908.28   sFT  0.99997375   +0 46 46.0
 JU3535;UTM  18      - 4,347,272.944   434,605.476   MT  0.99965265   -0 28 47.7
 JU3535
 JU3535!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3535!SPC MD       -   1.00000260  x   0.99997375  =   0.99997635
 JU3535!UTM  18      -   1.00000260  x   0.99965265  =   0.99965525
 JU3535
 JU3535_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3460547272(NAD 83)
 JU3535
 JU3535                          SUPERSEDED SURVEY CONTROL
 JU3535
 JU3535  NAD 83(1986)-  39 16 20.41284(N)    075 45 29.22464(W) AD(       ) 2
 JU3535  NAD 27      -  39 16 20.01430(N)    075 45 30.46680(W) AD(       ) 2
 JU3535  NGVD 29 (07/19/86)   17.4    (m)           57.     (f) VERT ANG       
 JU3535
 JU3535.Superseded values are not recommended for survey control.
 JU3535
 JU3535.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3535.See file dsdata.pdf to determine how the superseded data were derived.
 JU3535
 JU3535_MARKER: V = STONE MONUMENT
 JU3535_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3535
 JU3535  HISTORY     - Date     Condition        Report By
 JU3535  HISTORY     - 1961     MONUMENTED       CGS
 JU3535  HISTORY     - 20061215 POOR             GEOCAC
 JU3535
 JU3535                          STATION DESCRIPTION
 JU3535
 JU3535'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3535'THE STATION IS LOCATED IN A HEAVY WOODED AREA, 4-1/2 MILES
 JU3535'EAST-NORTHEAST OF MILLINGTON, MARYLAND, 6.0 MILES NORTHWEST OF
 JU3535'KENTON, DELAWARE AND IS ON PROPERTY OWNED BY MR. JOHN
 JU3535'T. ROBINSON.  THE MONUMENT IS A 12 X 12 INCH GRANITE STONE MARKED
 JU3535'M AND P AND PROJECTS ABOUT 24 INCHES ABOVE THE GROUND SURFACE.
 JU3535'THE MONUMENT IS LEANING SLIGHTLY EAST AND THE TOP CORNERS ARE
 JU3535'CHIPPED OFF.  OTHER THAN THE CHIPPED CORNERS THE MONUMENT IS
 JU3535'CONSIDERED IN GOOD CONDITION.  IT IS 1.0 FOOT EAST OF A NORTH
 JU3535'AND SOUTH FENCE LINE, 10.0 FEET NORTH OF THE LARGEST TREE
 JU3535'IN THE AREA.  THE POINT INTERSECTED AND TRAVERSE TO WAS A SMALL
 JU3535'CROSS ETCHED ON THE APEX AND CENTER OF THE MONUMENT.
 JU3535'
 JU3535'TO REACH STATION ROBINSON FROM THE CROSSROADS IN MILLINGTON,
 JU3535'MARYLAND, GO EAST ON STATE HIGHWAY 291 FOR 4.3 MILES TO THE
 JU3535'STATE LINE, CONTINUE EAST ON DELAWARE STATE HIGHWAY 6 FOR
 JU3535'0.65 MILE TO A GRAVELED ROAD LEFT, TURN LEFT AND GO NORTH ON
 JU3535'THE GRAVELED ROAD FOR 0.65 MILE TO THE AZIMUTH MARK ON THE
 JU3535'LEFT, CONTINUE NORTH ON THE GRAVELED ROAD FOR 0.3 MILE TO
 JU3535'A FARM LANE ON THE LEFT, TURN LEFT AND GO WEST ON THE FARM
 JU3535'LANE FOR 0.15 MILE TO THE RESIDENCE OF MR. ROBINSON, TURN
 JU3535'RIGHT AND GO NORTH AROUND THE BARN AND THEN LEFT, WEST ON A
 JU3535'FIELD ROAD FOR 0.3 MILE TO A LONE WILD CHERRY TREE AND THE
 JU3535'STATION.
 JU3535'
 JU3535'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION
 JU3535'ROBINSON, DISTANCE BEING 115.460 METERS (378.81) FEET
 JU3535'NORTH-NORTHWEST OF STATION ROBINSON.
 JU3535
 JU3535                          STATION RECOVERY (2006)
 JU3535
 JU3535'RECOVERY NOTE BY GEOCACHING 2006 (WD)
 JU3535'THE MONUMENT IS LOCATED IN A WOODED AND SWAMPY AREA ABOUT 150 FEET
 JU3535'NORTHWEST OF THE NORTHWEST EDGE OF A CULTIVATED FIELD, ABOUT 90 FEET
 JU3535'SOUTHEAST OF A STREAM THAT RUNS NORTHEAST TO SOUTHWEST, ABOUT EIGHT
 JU3535'FEET NORTHWEST OF A 24-INCH DIAMETER OAK TREE, AND ABOUT 1.5 FEET
 JU3535'NORTHWEST OF AN ORANGE CARSONITE WITNESS POST.  THE STONE PROJECTS
 JU3535'ABOUT 21 INCHES, BUT IS TILTING ABOUT EIGHT DEGREES TO THE EAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3536 ***********************************************************************
 JU3536  DESIGNATION -  BDY MON 57 DE MD
 JU3536  PID         -  JU3536
 JU3536  STATE/COUNTY-  MD/KENT
 JU3536  COUNTRY     -  US
 JU3536  USGS QUAD   -  MILLINGTON (2016)
 JU3536
 JU3536                         *CURRENT SURVEY CONTROL
 JU3536  ______________________________________________________________________
 JU3536* NAD 83(1991) POSITION- 39 17 12.59765(N) 075 45 33.37636(W)   ADJUSTED
 JU3536* NAVD 88 ORTHO HEIGHT -    22.1   (meters)       73.    (feet) VERTCON3
 JU3536  ______________________________________________________________________
 JU3536  GEOID HEIGHT    -        -33.699 (meters)                     GEOID18
 JU3536  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 JU3536  HORZ ORDER      -  SECOND
 JU3536
 JU3536.The horizontal coordinates were established by classical geodetic methods
 JU3536.and adjusted by the National Geodetic Survey in January 1992.
 JU3536
 JU3536.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3536.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3536
 JU3536.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3536.GEOID18 height accuracy estimate available here.
 JU3536
 JU3536.Click photographs - Photos may exist for this station.
 JU3536
 JU3536.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3536
 JU3536. The following values were computed from the NAD 83(1991) position.
 JU3536
 JU3536;                    North         East     Units Scale Factor Converg.
 JU3536;SPC MD       -   180,576.052   507,038.659   MT  0.99997553   +0 46 43.4
 JU3536;SPC MD       -   592,439.93  1,663,509.33   sFT  0.99997553   +0 46 43.4
 JU3536;UTM  18      - 4,348,882.235   434,519.267   MT  0.99965279   -0 28 50.8
 JU3536
 JU3536!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3536!SPC MD       -   1.00000183  x   0.99997553  =   0.99997736
 JU3536!UTM  18      -   1.00000183  x   0.99965279  =   0.99965462
 JU3536
 JU3536_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3451948882(NAD 83)
 JU3536
 JU3536                          SUPERSEDED SURVEY CONTROL
 JU3536
 JU3536  NAD 83(1986)-  39 17 12.58913(N)    075 45 33.38560(W) AD(       ) 2
 JU3536  NAD 27      -  39 17 12.18940(N)    075 45 34.62780(W) AD(       ) 2
 JU3536  NGVD 29 (07/19/86)   22.3    (m)           73.     (f) VERT ANG       
 JU3536
 JU3536.Superseded values are not recommended for survey control.
 JU3536
 JU3536.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3536.See file dsdata.pdf to determine how the superseded data were derived.
 JU3536
 JU3536_MARKER: V = STONE MONUMENT
 JU3536_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3536_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3536+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2006
 JU3536
 JU3536  HISTORY     - Date     Condition        Report By
 JU3536  HISTORY     - 1961     MONUMENTED       CGS
 JU3536  HISTORY     - 20061215 GOOD             GEOCAC
 JU3536
 JU3536                          STATION DESCRIPTION
 JU3536
 JU3536'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3536'THE STATION IS LOCATED IN A HEAVY WOODED AREA, 4-1/2 MILES
 JU3536'EAST-SOUTHEAST OF MILLINGTON, MARYLAND, 6.0 MILES WEST-NORTHWEST
 JU3536'OF KENTON, DELAWARE AND ON PROPERTY OWNED BY THE MILLINGTON WILD
 JU3536'LIFE DEMONSTRATION AREA.  THE MONUMENT IS A 12 X 12 INCH GRANIT
 JU3536'STONE MARKED P AND M AND PROJECTS ABOUT 25 INCHES ABOVE THE
 JU3536'GROUND SURFACE.  THE MONUMENT WAS RECOVERED IN GOOD CONDITION.
 JU3536'IT IS LEANING SLIGHTLY EAST.  IT IS 1.0 FOOT SOUTHEAST OF A
 JU3536'YELLOW STEEL POST, 43.6 FEET SOUTH-SOUTHWEST OF A 10-INCH
 JU3536'TRIANGULAR BLAZED WHITE OAK TREE AND 48.3 FEET SOUTH OF A
 JU3536'STANDARD METAL WITNESS POST AND MARKER.
 JU3536'
 JU3536'TO REACH STATION DEMON FROM THE CROSSROADS IN MASSEY, GO EAST ON
 JU3536'A PAVED ROAD FOR 3.1 MILES TO A GRAVELED SIDE ROAD RIGHT, TURN
 JU3536'RIGHT AND GO SOUTH ON THE GRAVELED ROAD FOR 0.7 MILE TO A GRAVELED
 JU3536'DRIVEWAY LEFT, TURN LEFT AND GO EAST ON THE DRIVEWAY FOR 0.1 MILE
 JU3536'TO THE RESIDENCE OF MR. FRED BERINCHE, CONTINUE THROUGH THE YARD
 JU3536'AND BEAR RIGHT THROUGH THE GATE, CONTINUE SOUTH-SOUTHEAST ACROSS
 JU3536'THE PASTURE FIELD FOR 0.15 MILE TO A GAP IN THE FENCE LINE,
 JU3536'CONTINUE THROUGH THE GAP AND GO SOUTH AND SOUTHEAST ON A DIM
 JU3536'WINDING WOODS ROAD FOR 0.5 MILE TO THE STATION.
 JU3536'
 JU3536'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION DEMON,
 JU3536'DISTANCE BEING 15.1040 METERS 48.459 FEET SOUTH OF STATION DEMON.
 JU3536
 JU3536                          STATION RECOVERY (2006)
 JU3536
 JU3536'RECOVERY NOTE BY GEOCACHING 2006 (WD)
 JU3536'THE MONUMENT IS LOCATED ALONG A DIM TRACK ROAD IN A WOODED AREA ABOUT
 JU3536'0.6 MILES EAST OF BIG STONE ROAD.  THE STONE IS ERECT AND STABLE, AND
 JU3536'PROJECTS ABOUT 30 INCHES.  THE STONE MAY BE REACHED FROM A WILDLIFE
 JU3536'MANAGEMENT AREA PARKING AREA ON THE EAST SIDE OF BIG STONE SCHOOL ROAD
 JU3536'ABOUT 0.7 MILES SOUTH OF THE INTERSECTION WITH MARYLAND LINE
 JU3536'ROAD (MD STATE HIGHWAY 330).  FROM THE PARKING AREA, FOLLOW A TRACK
 JU3536'ROAD EAST AND SOUTH FOR ABOUT 0.75 MILES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3539 ***********************************************************************
 JU3539  DESIGNATION -  BDY MON 58 DEL MD
 JU3539  PID         -  JU3539
 JU3539  STATE/COUNTY-  MD/KENT
 JU3539  COUNTRY     -  US
 JU3539  USGS QUAD   -  MILLINGTON (2016)
 JU3539
 JU3539                         *CURRENT SURVEY CONTROL
 JU3539  ______________________________________________________________________
 JU3539* NAD 83(1991) POSITION- 39 18 04.98420(N) 075 45 37.57395(W)   ADJUSTED
 JU3539* NAVD 88 ORTHO HEIGHT -    20.3   (meters)       67.    (feet) VERTCON3
 JU3539  ______________________________________________________________________
 JU3539  GEOID HEIGHT    -        -33.676 (meters)                     GEOID18
 JU3539  LAPLACE CORR    -         -1.79  (seconds)                    DEFLEC18
 JU3539  HORZ ORDER      -  SECOND
 JU3539
 JU3539.The horizontal coordinates were established by classical geodetic methods
 JU3539.and adjusted by the National Geodetic Survey in January 1992.
 JU3539
 JU3539.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3539.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3539
 JU3539.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3539.GEOID18 height accuracy estimate available here.
 JU3539
 JU3539.Click photographs - Photos may exist for this station.
 JU3539
 JU3539.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3539
 JU3539. The following values were computed from the NAD 83(1991) position.
 JU3539
 JU3539;                    North         East     Units Scale Factor Converg.
 JU3539;SPC MD       -   182,190.058   506,916.138   MT  0.99997738   +0 46 40.8
 JU3539;SPC MD       -   597,735.22  1,663,107.36   sFT  0.99997738   +0 46 40.8
 JU3539;UTM  18      - 4,350,498.021   434,432.284   MT  0.99965293   -0 28 54.0
 JU3539
 JU3539!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3539!SPC MD       -   1.00000210  x   0.99997738  =   0.99997948
 JU3539!UTM  18      -   1.00000210  x   0.99965293  =   0.99965503
 JU3539
 JU3539_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3443250498(NAD 83)
 JU3539
 JU3539                          SUPERSEDED SURVEY CONTROL
 JU3539
 JU3539  NAD 83(1986)-  39 18 04.97566(N)    075 45 37.58306(W) AD(       ) 2
 JU3539  NAD 27      -  39 18 04.57750(N)    075 45 38.82520(W) AD(       ) 2
 JU3539  NGVD 29 (07/19/86)   20.5    (m)           67.     (f) VERT ANG       
 JU3539
 JU3539.Superseded values are not recommended for survey control.
 JU3539
 JU3539.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3539.See file dsdata.pdf to determine how the superseded data were derived.
 JU3539
 JU3539_MARKER: V = STONE MONUMENT
 JU3539_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3539_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3539+SATELLITE: SATELLITE OBSERVATIONS - December 12, 2003
 JU3539
 JU3539  HISTORY     - Date     Condition        Report By
 JU3539  HISTORY     - 1961     MONUMENTED       CGS
 JU3539  HISTORY     - 19960928 GOOD             USPSQD
 JU3539  HISTORY     - 19981003 GOOD             USPSQD
 JU3539  HISTORY     - 20031212 GOOD             GEOCAC
 JU3539
 JU3539                          STATION DESCRIPTION
 JU3539
 JU3539'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3539'THE STATION IS LOCATED ABOUT 3.5 MILES EAST OF MASSEY, MARYLAND,
 JU3539'2.5 MILES SOUTH OF GOLTS, MARYLAND AND ON PROPERTY OWNED BY
 JU3539'MR. J. E. BENNETT.  IT IS A 12-INCH, LIMESTONE, SQUARE MONUMENT
 JU3539'PROJECTING ABOUT 4 INCHES ABOVE THE SURFACE OF THE GROUND, SETTING
 JU3539'PLUMB AND IN GOOD CONDITION.  IT IS 30.0 FEET NORTH OF THE
 JU3539'CENTERLINE OF AN EAST AND WEST BLACKTOP ROAD, 25.0 FEET WEST OF
 JU3539'A POWERLINE POLE, 21.0 FEET WEST OF A STANDARD METAL WITNESS
 JU3539'POST AND MARKER AND 2.0 FEET SOUTH OF AN EAST AND WEST
 JU3539'FENCELINE.
 JU3539'
 JU3539'TO REACH STATION BENNETT FROM THE CROSSROADS IN MASSEY, MARYLAND
 JU3539'GO EASTERLY ON ASPHALT ROAD FOR 2.9 MILES TO THE AZIMUTH MARK
 JU3539'ON THE RIGHT, CONTINUE EASTERLY ON ASPHALT ROAD FOR 0.6 MILE
 JU3539'TO THE STATE LINE AND THE STATION ON THE LEFT.
 JU3539'
 JU3539'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION BENNETT,
 JU3539'DISTANCE BEING 7.917 METERS AND (25.97 FEET) WEST-NORTHWEST OF
 JU3539'STATION BENNETT.
 JU3539
 JU3539                          STATION RECOVERY (1996)
 JU3539
 JU3539'RECOVERY NOTE BY US POWER SQUADRON 1996
 JU3539'RECOVERED IN GOOD CONDITION.
 JU3539
 JU3539                          STATION RECOVERY (1998)
 JU3539
 JU3539'RECOVERY NOTE BY US POWER SQUADRON 1998
 JU3539'RECOVERED IN GOOD CONDITION.
 JU3539
 JU3539                          STATION RECOVERY (2003)
 JU3539
 JU3539'RECOVERY NOTE BY GEOCACHING 2003 (WD)
 JU3539'BOUNDARY MONUMENT 58 DEL MD IS AN 11-INCH BY 11-INCH LIMESTONE SHAFT
 JU3539'THAT PROJECTS NINE INCHES.  ACCORDING TO THE DELAWARE GEOLOGICAL
 JU3539'SURVEY, THE MASON-DIXON TANGENT LINE SURVEY SET THIS STONE IN 1766.
 JU3539'IT IS AN INTERMEDIARY BOUNDARY MILE MARKER.
 JU3539'THE STONE APPEARS TO BE PLUMB, BUT THE SMALL PROJECTION PREVENTS A
 JU3539'RELIABLE MEASURE OF ANY LEAN.  THE STONE IS BADLY WEATHERED, WORN AND
 JU3539'CHIPPED, AND THE CUT LETTERS P AND M, IN THE EAST AND WEST FACES,
 JU3539'RESPECTIVELY, ARE NOT DISCERNABLE.  THE TOP IS VERY WEATHERED, AND
 JU3539'THERE ARE FIVE DRILL HOLES IN THE SOUTH QUADRANT.  THE CHISELED CROSS
 JU3539'IN THE TOP IS VERY FAINT DUE TO WEATHERING.
 JU3539'THE STONE IS LOCATED IN THE RIGHT-OF-WAY IN THE NORTHWEST ANGLE FORMED
 JU3539'BY THE INTERSECTION OF PAVED MD RTE 330 AND A GRAVEL DRIVEWAY THAT
 JU3539'EXTENDS NORTH-NORTHEAST.  THE STONE IS ALMOST ENTIRELY OBSCURED BY
 JU3539'GRASS.  IT IS SURROUNDED BY THREE I-BEAMS THAT ARE SET NINE INCHES
 JU3539'NORTH, 11 INCHES SOUTHWEST AND 12 TWELVE INCHES SOUTHEAST,
 JU3539'RESPECTIVELY.  THE STONE ALSO LIES TEN INCHES SOUTHEAST OF AN ORANGE
 JU3539'CARSONITE WITNESS POST.
 JU3539'THE STONE IS LOCATED 14 FEET (4.27 M) NORTH OF THE NORTH EDGE OF
 JU3539'PAVEMENT AND 27.8 FEET (8.47 M) NORTH-NORTHWEST OF THE APPROXIMATE
 JU3539'CENTERLINE OF MD RTE 330, 9.2 FEET (2.80 M) WEST OF THE APPROXIMATE
 JU3539'CENTERLINE OF THE GRAVEL DRIVE, 19.1 FEET (5.82 M) WEST OF A WOODEN
 JU3539'GATE POST,
 JU3539'24.3 FEET (7.41 M) WEST OF UTILITY POLE 6727 24A, 31.7 FEET (9.66 M)
 JU3539'NORTHWEST OF A WOODEN MAILBOX POST FOR HOUSE NUMBER 2987, AND 31.8
 JU3539'FEET (9.69 M) EAST-NORTHEAST OF A ROAD SIGN THAT IDENTIFIES THE DE-MD
 JU3539'STATE BOUNDARY.
 JU3539'TO REACH THE STONE FROM THE CROSSROADS AT MASSEY, MD, GO SOUTHEAST AND
 JU3539'EAST ON MD RTE 330 FOR 3.5 MILES (5.63 KM) TO THE MARYLAND-DELAWARE
 JU3539'STATE LINE AND THE STONE ON THE LEFT.
 JU3539'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3540 ***********************************************************************
 JU3540  DESIGNATION -  BDY MON 59 DEL MD
 JU3540  PID         -  JU3540
 JU3540  STATE/COUNTY-  MD/KENT
 JU3540  COUNTRY     -  US
 JU3540  USGS QUAD   -  MILLINGTON (2016)
 JU3540
 JU3540                         *CURRENT SURVEY CONTROL
 JU3540  ______________________________________________________________________
 JU3540* NAD 83(1991) POSITION- 39 18 57.33239(N) 075 45 41.82005(W)   ADJUSTED
 JU3540* NAVD 88 ORTHO HEIGHT -    23.9   (meters)       78.    (feet) VERTCON3
 JU3540  ______________________________________________________________________
 JU3540  GEOID HEIGHT    -        -33.653 (meters)                     GEOID18
 JU3540  LAPLACE CORR    -         -1.62  (seconds)                    DEFLEC18
 JU3540  HORZ ORDER      -  SECOND
 JU3540
 JU3540.The horizontal coordinates were established by classical geodetic methods
 JU3540.and adjusted by the National Geodetic Survey in January 1992.
 JU3540
 JU3540.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3540.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3540
 JU3540.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3540.GEOID18 height accuracy estimate available here.
 JU3540
 JU3540.Click photographs - Photos may exist for this station.
 JU3540
 JU3540.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3540
 JU3540. The following values were computed from the NAD 83(1991) position.
 JU3540
 JU3540;                    North         East     Units Scale Factor Converg.
 JU3540;SPC MD       -   183,802.874   506,792.512   MT  0.99997929   +0 46 38.1
 JU3540;SPC MD       -   603,026.60  1,662,701.77   sFT  0.99997929   +0 46 38.1
 JU3540;UTM  18      - 4,352,112.639   434,344.174   MT  0.99965307   -0 28 57.3
 JU3540
 JU3540!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3540!SPC MD       -   1.00000154  x   0.99997929  =   0.99998083
 JU3540!UTM  18      -   1.00000154  x   0.99965307  =   0.99965461
 JU3540
 JU3540_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3434452112(NAD 83)
 JU3540
 JU3540                          SUPERSEDED SURVEY CONTROL
 JU3540
 JU3540  NAD 83(1986)-  39 18 57.32406(N)    075 45 41.82910(W) AD(       ) 2
 JU3540  NAD 27      -  39 18 56.92140(N)    075 45 43.07060(W) AD(       ) 2
 JU3540  NGVD 29 (07/19/86)   24.1    (m)           79.     (f) VERT ANG       
 JU3540
 JU3540.Superseded values are not recommended for survey control.
 JU3540
 JU3540.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3540.See file dsdata.pdf to determine how the superseded data were derived.
 JU3540
 JU3540_MARKER: 71 = BOUNDARY MONUMENT
 JU3540_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3540+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2006
 JU3540
 JU3540  HISTORY     - Date     Condition        Report By
 JU3540  HISTORY     - 1961     FIRST OBSERVED   CGS
 JU3540  HISTORY     - 20061215 GOOD             GEOCAC
 JU3540
 JU3540                          STATION DESCRIPTION
 JU3540
 JU3540'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3540'STATION IS LOCATED ABOUT 3.5 MILES EAST OF MASSEY, MARYLAND,
 JU3540'1.5 MILES SOUTHEAST OF GOLTS, MARYLAND, AND ON PROPERTY OWNED BY
 JU3540'MRS. ANGELINE QUILLEN.  IT IS A 12-INCH SQUARE STONE PROJECTING
 JU3540'ABOUT 12 INCHES ABOVE THE GROUND SURFACE WITH THE LETTERS M AND
 JU3540'P ON THE WEST AND EAST SIDES RESPECTIVELY.  A TRAVERSE CONNECTION
 JU3540'WAS MADE FROM STATION QUILLEN BEING 26.027 METERS (85.390) FEET.
 JU3540
 JU3540                          STATION RECOVERY (2006)
 JU3540
 JU3540'RECOVERY NOTE BY GEOCACHING 2006 (WD)
 JU3540'THE MONUMENT IS LOCATED IN THE MILLINGTON STATE WILDLIFE MANAGEMENT
 JU3540'AREA ABOUT 0.75 MILES EAST OF BLACK BOTTOM ROAD.  THE STONE IS BADLY
 JU3540'CHIPPED, AND ALL FOUR TOP CORNERS ARE MISSING.  THE STONE IS ERECT AND
 JU3540'STABLE, AND PROJECTS 21 INCHES.  TO REACH FROM A STATE WILDLIFE
 JU3540'MANAGEMENT AREA PARKING AREA ON THE EAST SIDE OF BLACK BOTTOM ROAD
 JU3540'ABOUT 0.9 MILES NORTH OF THE INTERSECTION WITH MARYLAND LINE ROAD (MD
 JU3540'STATE HIGHWAY 330), GO EAST ON A WELL-USED TRACK ROAD FOR ABOUT 0.75
 JU3540'MILES TO POSTED PRIVATE PROPERTY AND THE STATE BOUNDARY LINE.  THE
 JU3540'MAIN TRACK ROAD LEADS NORTHEAST AND A DIM TRACK ROAD LEADS SOUTH.  GO
 JU3540'SOUTH ON THE DIM TRACK ROAD FOR 210 FEET AND THE STONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3531 ***********************************************************************
 JU3531  DESIGNATION -  BDY MON 60 DE MD RESET
 JU3531  PID         -  JU3531
 JU3531  STATE/COUNTY-  MD/KENT
 JU3531  COUNTRY     -  US
 JU3531  USGS QUAD   -  MILLINGTON (2016)
 JU3531
 JU3531                         *CURRENT SURVEY CONTROL
 JU3531  ______________________________________________________________________
 JU3531* NAD 83(1991) POSITION- 39 19 52.02685(N) 075 45 46.22968(W)   NO CHECK
 JU3531* NAVD 88 ORTHO HEIGHT -    24.4   (meters)       80.    (feet) VERTCON3
 JU3531  ______________________________________________________________________
 JU3531  GEOID HEIGHT    -        -33.630 (meters)                     GEOID18
 JU3531  LAPLACE CORR    -         -1.40  (seconds)                    DEFLEC18
 JU3531  HORZ ORDER      -  THIRD
 JU3531
 JU3531.The horizontal coordinates were established by classical geodetic methods
 JU3531.and adjusted by the National Geodetic Survey in January 1992.
 JU3531
 JU3531.No horizontal observational check was made to the station.
 JU3531
 JU3531.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3531.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3531
 JU3531.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3531.GEOID18 height accuracy estimate available here.
 JU3531
 JU3531.Click photographs - Photos may exist for this station.
 JU3531
 JU3531.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3531
 JU3531. The following values were computed from the NAD 83(1991) position.
 JU3531
 JU3531;                    North         East     Units Scale Factor Converg.
 JU3531;SPC MD       -   185,487.995   506,664.031   MT  0.99998136   +0 46 35.3
 JU3531;SPC MD       -   608,555.20  1,662,280.24   sFT  0.99998136   +0 46 35.3
 JU3531;UTM  18      - 4,353,799.626   434,252.806   MT  0.99965322   -0 29 00.6
 JU3531
 JU3531!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3531!SPC MD       -   1.00000145  x   0.99998136  =   0.99998281
 JU3531!UTM  18      -   1.00000145  x   0.99965322  =   0.99965467
 JU3531
 JU3531_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3425253799(NAD 83)
 JU3531
 JU3531                          SUPERSEDED SURVEY CONTROL
 JU3531
 JU3531  NAD 83(1986)-  39 19 52.01866(N)    075 45 46.23863(W) AD(       ) 3
 JU3531  NAD 27      -  39 19 51.61581(N)    075 45 47.47959(W) AD(       ) 3
 JU3531  NGVD 29 (07/19/86)   24.6    (m)           81.     (f) VERT ANG       
 JU3531
 JU3531.Superseded values are not recommended for survey control.
 JU3531
 JU3531.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3531.See file dsdata.pdf to determine how the superseded data were derived.
 JU3531
 JU3531_MARKER: X = CHISELED CROSS
 JU3531_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JU3531_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3531
 JU3531  HISTORY     - Date     Condition        Report By
 JU3531  HISTORY     - 1976     MONUMENTED       NGS
 JU3531  HISTORY     - 19981003 GOOD             USPSQD
 JU3531
 JU3531                          STATION DESCRIPTION
 JU3531
 JU3531'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3531'THE OLD MARYLAND-DELAWARE MONUMENT NUMBER 60 WAS RECOVERED IN THE
 JU3531'PRONE POSITION AT THIS DATE.  IT WAS RESET AT THE COMPUTED POSITION OF
 JU3531'THE BOUNDARY.  THERE WAS NO EVIDENCE TO INDICATE THE ORIGINAL LOCATION
 JU3531'OF THE MONUMENT.
 JU3531'
 JU3531'IT IS LOCATED 18 AIRLINE MILES NORTHWEST OF DOVER, 3 MILES SOUTHEAST
 JU3531'OF SASSAFRAS, AND 3 MILES NORTHEAST OF MASSEY.
 JU3531'
 JU3531'TO REACH FROM THE OLD RAILROAD STATION IN GOLTS, GO SOUTHEAST ON A
 JU3531'PAVED ROAD FOR 0.8 MILE TO A POINT WHERE THE ROAD CURVES TO THE EAST
 JU3531'AND THE MARKER ON THE LEFT.
 JU3531'
 JU3531'THE SURFACE MARK IS A 12-INCH SQUARE LIMESTONE MONUMENT WHICH IS WHICH
 JU3531'PROJECTS ONE FOOT.  A SMALL CUTCROSS IN THE TOP AND CENTER OF THE
 JU3531'MONUMENT MARKS THE POINT INTERSECTED.  THE OLD COAT OF ARMS ARE NEARLY
 JU3531'WORN AWAY BY THE WEATHER OF THE PAST YEARS.
 JU3531'
 JU3531'THE SUB-SURFACE MARKER IS A MARYLAND-DELAWARE BOUNDARY DISK STAMPED
 JU3531'N-S NO. 60 1976, SET IN AN 8-INCH MASS OF CONCRETE 36-INCHES BELOW THE
 JU3531'SURFACE OF THE GROUND.  THEY ARE 62 FEET NORTHEAST OF THE CENTER OF
 JU3531'THE PAVED ROAD, 20 FEET SOUTH OF AN 8-INCH TREE, 5.7 FEET SOUTHWEST OF
 JU3531'A WITNESS POST, AND 2.09 FEET WEST OF STATION WHARTON 1934.
 JU3531'
 JU3531'FOR ADDITIONAL INFORMATION, SEE DESCRIPTION FOR STATION WHARTON 1934.
 JU3531
 JU3531                          STATION RECOVERY (1998)
 JU3531
 JU3531'RECOVERY NOTE BY US POWER SQUADRON 1998
 JU3531'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3543 ***********************************************************************
 JU3543  DESIGNATION -  BDY MON 62 DEL MD
 JU3543  PID         -  JU3543
 JU3543  STATE/COUNTY-  MD/KENT
 JU3543  COUNTRY     -  US
 JU3543  USGS QUAD   -  MILLINGTON (2016)
 JU3543
 JU3543                         *CURRENT SURVEY CONTROL
 JU3543  ______________________________________________________________________
 JU3543* NAD 83(1991) POSITION- 39 21 33.83554(N) 075 45 54.44332(W)   ADJUSTED
 JU3543* NAVD 88 ORTHO HEIGHT -    20.    (meters)       66.    (feet) SCALED
 JU3543  ______________________________________________________________________
 JU3543  GEOID HEIGHT    -        -33.592 (meters)                     GEOID18
 JU3543  LAPLACE CORR    -         -1.20  (seconds)                    DEFLEC18
 JU3543  HORZ ORDER      -  SECOND
 JU3543
 JU3543.The horizontal coordinates were established by classical geodetic methods
 JU3543.and adjusted by the National Geodetic Survey in January 1992.
 JU3543
 JU3543.The orthometric height was scaled from a topographic map.
 JU3543
 JU3543.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3543.GEOID18 height accuracy estimate available here.
 JU3543
 JU3543.Click photographs - Photos may exist for this station.
 JU3543
 JU3543.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3543
 JU3543. The following values were computed from the NAD 83(1991) position.
 JU3543
 JU3543;                    North         East     Units Scale Factor Converg.
 JU3543;SPC MD       -   188,624.718   506,424.864   MT  0.99998541   +0 46 30.2
 JU3543;SPC MD       -   618,846.26  1,661,495.57   sFT  0.99998541   +0 46 30.2
 JU3543;UTM  18      - 4,356,939.813   434,082.735   MT  0.99965350   -0 29 06.9
 JU3543
 JU3543!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3543!SPC MD       -   1.00000217  x   0.99998541  =   0.99998758
 JU3543!UTM  18      -   1.00000217  x   0.99965350  =   0.99965567
 JU3543
 JU3543_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3408256939(NAD 83)
 JU3543
 JU3543                          SUPERSEDED SURVEY CONTROL
 JU3543
 JU3543  NAD 83(1986)-  39 21 33.82766(N)    075 45 54.45213(W) AD(       ) 2
 JU3543  NAD 27      -  39 21 33.42380(N)    075 45 55.69140(W) AD(       ) 2
 JU3543
 JU3543.Superseded values are not recommended for survey control.
 JU3543
 JU3543.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3543.See file dsdata.pdf to determine how the superseded data were derived.
 JU3543
 JU3543_MARKER: 71 = BOUNDARY MONUMENT
 JU3543
 JU3543  HISTORY     - Date     Condition        Report By
 JU3543  HISTORY     - 1961     FIRST OBSERVED   CGS
 JU3543  HISTORY     - 20070706 POOR             GEOCAC
 JU3543
 JU3543                          STATION DESCRIPTION
 JU3543
 JU3543'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3543'STATION IS A 12 X 12 INCH SQUARE GRANITE STONE WHICH PROJECTS
 JU3543'ABOUT 24 INCHES ABOVE THE GROUND AND IS LEANING TO THE SOUTH AT
 JU3543'A 65 DEG ANGLE.  THE APPROXIMATE CENTER OF THE MONUMENT WAS
 JU3543'OBSERVED AND TAPED TO.  IT IS 86.0 FEET EAST-SOUTHEAST OF A
 JU3543'16-INCH TRIANGULAR BLAZED WHITE OAK TREE, 85.5 FEET EAST OF A
 JU3543'8-INCH TRIANGULAR BLAZED WHITE OAK TREE AND 65.6 FEET EAST
 JU3543'OF A 8-INCH WHITE OAK TREE WITH A STANDARD METAL WITNESS
 JU3543'MARKER ATTACHED TO IT.  A TRAVERSE WAS MADE TO TRIANGULATION
 JU3543'STATION HERRINGS DISTANCE BEING (82.841) FEET AND 25.250
 JU3543'METERS.
 JU3543
 JU3543                          STATION RECOVERY (2007)
 JU3543
 JU3543'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3543'THE STONE IS LOCATED IN A HEAVILY WOODED AREA.  IT LEANS ABOUT TWELVE
 JU3543'DEGREES TO THE SOUTHEAST AND IS VERY UNSTABLE.  TO REACH FROM THE
 JU3543'INTERSECTION OF US HIGHWAY 301 MARYLAND STATE HIGHWAY 290 (GALENA
 JU3543'SASSAFRAS ROAD).  TURN RIGHT AND GO NORTHEAST ON MARYLAND STATE
 JU3543'HIGHWAY 290 FOR ABOUT 1.3 MILES TO THE INTERSECTION WITH
 JU3543'SASSAFRAS-COLDWELL ROAD.  TURN RIGHT AND GO EASTERLY ON
 JU3543'SASSAFRAS-COLDWELL ROAD FOR ABOUT 2.2 MILES TO THE STATE BOUNDARY LINE
 JU3543'AND THE INTERSECTION WITH GOLTS-COLDWELL ROAD.  TURN RIGHT AND GO
 JU3543'SOUTHERLY ON GOLTS-
 JU3543'COLDWELL ROAD FOR ABOUT 0.5 MILES TO THE GRAVEL DRIVEWAY AT THE
 JU3543'MAILBOX FOR HOUSE NUMBER 14190.  TURN LEFT AND GO SOUTHEAST ON THE
 JU3543'GRAVEL DRIVEWAY FOR ABOUT 0.1 MILES TO A LARGE, LOG PRIVATE RESIDENCE.
 JU3543'FROM THE SOUTHEAST SIDE OF THE RESIDENCE, PACK SOUTHEAST
 JU3543'ACROSS A CULTIVATED FIELD FOR ABOUT 250 FEET TO THE TREE LINE.
 JU3543'CONTINUE SOUTHEAST ON A DIM TRAIL THAT STARTS ABOUT 200 FEET NORTHEAST
 JU3543'OF THE SOUTHEAST CORNER OF THE CULTIVATED FIELD FOR ABOUT 0.11 MILES
 JU3543'TO THE STONE IN HEAVY UNDERGROWTH ON THE NORTH SIDE OF THE TRAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7257 ***********************************************************************
 HV7257  DESIGNATION -  BEACH
 HV7257  PID         -  HV7257
 HV7257  STATE/COUNTY-  MD/CALVERT
 HV7257  COUNTRY     -  US
 HV7257  USGS QUAD   -  NORTH BEACH (2016)
 HV7257
 HV7257                         *CURRENT SURVEY CONTROL
 HV7257  ______________________________________________________________________
 HV7257* NAD 83(1991) POSITION- 38 40 24.08423(N) 076 31 51.03761(W)   ADJUSTED
 HV7257* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 HV7257  ______________________________________________________________________
 HV7257  GEOID HEIGHT    -        -33.728 (meters)                     GEOID18
 HV7257  LAPLACE CORR    -         -5.15  (seconds)                    DEFLEC18
 HV7257  HORZ ORDER      -  THIRD
 HV7257
 HV7257.The horizontal coordinates were established by classical geodetic methods
 HV7257.and adjusted by the National Geodetic Survey in January 1992.
 HV7257
 HV7257.The orthometric height was scaled from a topographic map.
 HV7257
 HV7257.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7257.GEOID18 height accuracy estimate available here.
 HV7257
 HV7257.Click photographs - Photos may exist for this station.
 HV7257
 HV7257.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7257
 HV7257. The following values were computed from the NAD 83(1991) position.
 HV7257
 HV7257;                    North         East     Units Scale Factor Converg.
 HV7257;SPC MD       -   111,851.434   440,825.542   MT  0.99995606   +0 17 40.1
 HV7257;SPC MD       -   366,965.91  1,446,275.13   sFT  0.99995606   +0 17 40.1
 HV7257;UTM  18      - 4,281,641.470   366,830.724   MT  0.99981839   -0 57 24.2
 HV7257
 HV7257!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7257!SPC MD       -   1.00000000  x   0.99995606  =   0.99995606
 HV7257!UTM  18      -   1.00000000  x   0.99981839  =   0.99981839
 HV7257
 HV7257:                Primary Azimuth Mark                     Grid Az
 HV7257:SPC MD       -  BLAKE 2                                  203 48 13.7
 HV7257:UTM  18      -  BLAKE 2                                  205 03 18.0
 HV7257
 HV7257_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6683081641(NAD 83)
 HV7257
 HV7257|---------------------------------------------------------------------|
 HV7257| PID    Reference Object                     Distance      Geod. Az  |
 HV7257|                                                           dddmmss.s |
 HV7257| HV7274 BLAKE 2                             APPROX. 1.3 KM 2040553.8 |
 HV7257| CX3521 NAIL IN BLAZED LOCUST                 8.470 METERS 28751     |
 HV7257|---------------------------------------------------------------------|
 HV7257
 HV7257                          SUPERSEDED SURVEY CONTROL
 HV7257
 HV7257  NAD 83(1986)-  38 40 24.08225(N)    076 31 51.05080(W) AD(       ) 3
 HV7257  NAD 27      -  38 40 23.63900(N)    076 31 52.17200(W) AD(       ) 3
 HV7257  USSD        -  38 40 24.02600(N)    076 31 52.00300(W) AD(       ) 3
 HV7257
 HV7257.Superseded values are not recommended for survey control.
 HV7257
 HV7257.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7257.See file dsdata.pdf to determine how the superseded data were derived.
 HV7257
 HV7257_MARKER: N = NAIL
 HV7257_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV7257_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV7257
 HV7257  HISTORY     - Date     Condition        Report By
 HV7257  HISTORY     - 1907     MONUMENTED       CGS
 HV7257  HISTORY     - 1944     MARK NOT FOUND   CGS
 HV7257
 HV7257                          STATION DESCRIPTION
 HV7257
 HV7257'DESCRIBED BY COAST AND GEODETIC SURVEY 1907 (CMS)
 HV7257'STATION IS ON THE WESTERN SHORE OF CHESAPEAKE BAY, ABOUT 1 MILE S
 HV7257'OF CHESAPEAKE BEACH, AND 1/2 MILE S OF THE FIRST MARSHY SLOUGH S
 HV7257'OF CHESAPEAKE BEACH.  STATION IS ABOUT 110 FEET ABOVE HIGH WATER
 HV7257'AND 7 YARDS BACK FROM THE EDGE OF HIGHEST BLUFF IN THE VICINITY.
 HV7257'THE GROUND FALLS AWAY RAPIDLY TO THE SW AND W OF THE STATION, AND
 HV7257'IS COVERED WITH BRUSH AND SMALL LOCUST TREES.  A CULTIVATED FIELD
 HV7257'EXTENDS TO WITHIN 10 YARDS OF THE STATION ON THE NW.  IN 1907 A
 HV7257'VISTA WAS CLEARED IN THE DIRECTION OF STATION BLAKE, AZIMUTH S 24
 HV7257'DEG 05 MIN W.  THIS INVOLVED THE CUTTING OF SOME LARGE TREES.
 HV7257'
 HV7257'STATION MARKED UNDERGROUND BY TWO HEXAGONAL DRAINTILES PLACED ONE
 HV7257'ABOVE THE OTHER, THE TOP OF THE UPPER TILE BEING 3 FEET BELOW THE
 HV7257'SURFACE OF THE GROUND.  SURFACE MARK IS A 6-INCH TILE PIPE SET IN
 HV7257'CEMENT WITH TOP FLUSH WITH GROUND.  A NAIL IN TOP MARKS CENTER,
 HV7257'AND THE LETTERS U.S.C. AND G.S. 1907 ARE ROUGHLY MARKED IN THE CEMENT.
 HV7257'
 HV7257'REFERENCE MARK OF 1907 IS SAME AS STATION MARK EXCEPT THAT ONLY
 HV7257'ONE TILE WAS USED IN THE SUBSURFACE MARK.  IT IS 10.25 METERS
 HV7257'(33.6 FEET), FROM STATION IN BEARING N 74 DEG 52 MIN W. REFERENCE
 HV7257'STATION OF 1908 IS MARKED BY A HOLE IN THE CENTER OF A TRIANGLE OF
 HV7257'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV7257'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV7257'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV7257'TOP OF POST.  IT IS 11.40 METERS (37.4 FEET), FROM STATION N 85
 HV7257'DEG 05 MIN W.  DISTANCES AND BEARINGS FROM THE STATION TO OTHER
 HV7257'POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZED LOCUST TREE,
 HV7257'8.47 METERS (27.79 FEET), N 67 DEG 07 MIN W, NEAR GABLE OF HOUSE,
 HV7257'1 MILE, N 13 DEG 49 MIN W. HIGH VIEW HOTEL, 1/2 MILE, N 12 DEG 08
 HV7257'MIN W. CUPOLA AT CHESAPEAKE BEACH, 3/4 MILE, N 9 DEG 01 MIN W.
 HV7257'FLAGPOLE OF MERRY-GO-ROUND AT CHESAPEAKE BEACH, 3/4 MILE, N 3 DEG
 HV7257'21 MIN W.  LEFT CORNER OF HOUSE AT N CHESAPEAKE BEACH, 2 MILES, N
 HV7257'1 DEG 21 MIN E.  OUTSIDE END OF WHARF AT N CHESAPEAKE BEACH, 2
 HV7257'MILES, N 3 DEG 40 MIN E.   OUTSIDE END OF WHARF NEAR CHESAPEAKE
 HV7257'BEACH, 1 MILE, N 21 DEG 12 MIN E. NAIL IN BLAZED LOCUST TREE,
 HV7257'16.85 METERS (55.3 FEET), S 15 DEG 57 MIN E.
 HV7257
 HV7257                          STATION RECOVERY (1944)
 HV7257
 HV7257'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944 (LPR)
 HV7257'STATION NOT FOUND.  DESCRIPTION ADEQUATE FOR LOCATION EXCEPT NONE
 HV7257'OF THE BLAZED TREES REMAIN.  THE REFERENCE MARK OF 1908, STANDARD
 HV7257'MONUMENT OF M.S.F.S., WAS FOUND.  THIS LATTER MARK IS IN GOOD
 HV7257'CONDITION AND SOLID.  IT NOW PROJECTS ABOUT 2 INCHES ABOVE GROUND.
 HV7257'FROM MEASUREMENTS THE ORIGINAL STATION IS NOW ABOUT 6 FEET FROM
 HV7257'THE EDGE OF THE CLIFF.  THE SURFACE MARK WAS NOT FOUND AFTER
 HV7257'SEARCH.  THE STATION PROBABLY COULD BE FOUND BY ACCURATE
 HV7257'DETERMINATION OF THE AZIMUTH OF THE STATION ON THE GROUND FROM THE
 HV7257'1908 REFERENCE MARK AND DIGGING FOR THE UNDERGROUND MARKS.  A
 HV7257'BLAZE WAS CUT ON A TREE ABOUT 10 FEET SW OF THE 1908 REFERENCE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4273 ***********************************************************************
 JV4273  DESIGNATION -  BEACH
 JV4273  PID         -  JV4273
 JV4273  STATE/COUNTY-  MD/MONTGOMERY
 JV4273  COUNTRY     -  US
 JV4273  USGS QUAD   -  KENSINGTON (2016)
 JV4273
 JV4273                         *CURRENT SURVEY CONTROL
 JV4273  ______________________________________________________________________
 JV4273* NAD 83(1993) POSITION- 39 02 44.26742(N) 077 06 43.47338(W)   ADJUSTED
 JV4273* NAVD 88 ORTHO HEIGHT -   126.    (meters)      413.    (feet) SCALED
 JV4273  ______________________________________________________________________
 JV4273  GEOID HEIGHT    -        -31.797 (meters)                     GEOID18
 JV4273  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 JV4273  HORZ ORDER      -  SECOND
 JV4273
 JV4273.The horizontal coordinates were established by classical geodetic methods
 JV4273.and adjusted by the National Geodetic Survey in November 1994.
 JV4273
 JV4273.The orthometric height was scaled from a topographic map.
 JV4273
 JV4273.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4273.GEOID18 height accuracy estimate available here.
 JV4273
 JV4273.Click photographs - Photos may exist for this station.
 JV4273
 JV4273.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4273
 JV4273. The following values were computed from the NAD 83(1993) position.
 JV4273
 JV4273;                    North         East     Units Scale Factor Converg.
 JV4273;SPC MD       -   153,077.565   390,297.950   MT  0.99995423   -0 04 13.2
 JV4273;SPC MD       -   502,221.98  1,280,502.52   sFT  0.99995423   -0 04 13.2
 JV4273;SPC VA N     - 2,153,974.962 3,620,146.178   MT  0.99997625   +0 51 58.4
 JV4273;SPC VA N     - 7,066,832.85 11,877,096.25   sFT  0.99997625   +0 51 58.4
 JV4273;UTM  18      - 4,323,962.913   317,220.530   MT  1.00001138   -1 19 51.1
 JV4273
 JV4273!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4273!SPC MD       -   0.99998526  x   0.99995423  =   0.99993949
 JV4273!SPC VA N     -   0.99998526  x   0.99997625  =   0.99996151
 JV4273!UTM  18      -   0.99998526  x   1.00001138  =   0.99999663
 JV4273
 JV4273:                Primary Azimuth Mark                     Grid Az
 JV4273:SPC MD       -  KEN                                      122 30 40.1
 JV4273:SPC VA N     -  KEN                                      121 34 28.5
 JV4273:UTM  18      -  KEN                                      123 46 18.0
 JV4273
 JV4273_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1722023962(NAD 83)
 JV4273
 JV4273|---------------------------------------------------------------------|
 JV4273| PID    Reference Object                     Distance      Geod. Az  |
 JV4273|                                                           dddmmss.s |
 JV4273| JV4276 KEN                                 APPROX. 3.5 KM 1222626.9 |
 JV4273| CJ8181 BEACH RM                             23.550 METERS 20046     |
 JV4273|---------------------------------------------------------------------|
 JV4273
 JV4273                          SUPERSEDED SURVEY CONTROL
 JV4273
 JV4273  NAD 83(1991)-  39 02 44.26707(N)    077 06 43.47411(W) AD(       ) 2
 JV4273  NAD 83(1986)-  39 02 44.26646(N)    077 06 43.48352(W) AD(       ) 2
 JV4273  NAD 27      -  39 02 43.87400(N)    077 06 44.54500(W) AD(       ) 2
 JV4273  USSD        -  39 02 44.19300(N)    077 06 44.36200(W) AD(       ) 3
 JV4273
 JV4273.Superseded values are not recommended for survey control.
 JV4273
 JV4273.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4273.See file dsdata.pdf to determine how the superseded data were derived.
 JV4273
 JV4273_MARKER: DS = TRIANGULATION STATION DISK
 JV4273_SETTING: 0 = UNSPECIFIED SETTING
 JV4273_MARK LOGO: CGS
 JV4273
 JV4273  HISTORY     - Date     Condition        Report By
 JV4273  HISTORY     - 1917     MONUMENTED       CGS
 JV4273  HISTORY     - 1927     SEE DESCRIPTION  WSSC
 JV4273  HISTORY     - 1934     GOOD             MDGS
 JV4273  HISTORY     - 1958     MARK NOT FOUND   CGS
 JV4273
 JV4273                          STATION DESCRIPTION
 JV4273
 JV4273'DESCRIBED BY COAST AND GEODETIC SURVEY 1917 (CVH)
 JV4273'STATION IS ABOUT 2-1/2 MILES NW OF KENSINGTON, ON THE E SIDE
 JV4273'OF THE WASHINGTON-ROCKVILLE ROAD, OPPOSITE THE RESIDENCE OF
 JV4273'MRS. MORGAN H. BEACH, AND ALMOST IN FRONT OF TENANT HOUSE
 JV4273'BELONGING TO MRS. BEACH.  STATION MARKED BY A STANDARD BRONZE
 JV4273'DISK SET IN A GRANITE POST.  REFERENCE MARK IS A STANDARD
 JV4273'BRONZE DISK SET IN A GRANITE POST, IS NEAR THE FENCE LINE ON
 JV4273'THE W SIDE OF ROAD, AND A FEW METERS S OF ROADWAY LEADING TO
 JV4273'MRS. BEACHS RESIDENCE.
 JV4273
 JV4273                          STATION RECOVERY (1927)
 JV4273
 JV4273'RECOVERY NOTE BY WASH SUBURB SAN COMM 1927
 JV4273'DESCRIPTION GOOD EXCEPT AS FOLLOWS--
 JV4273'
 JV4273'ON JUNE 15, 1927, THIS STATION WAS FOUND TO BE IN A DRIVEWAY
 JV4273'AND IN DANGER OF BEING DISTURBED IF IT HAD NOT ALREADY BEEN
 JV4273'DISTURBED.  IT WAS FOUND THAT THE REFERENCES WOULD NOT
 JV4273'INTERSECT (USING HORIZONTAL DISTANCES) BY 0.15 FOOT SO IT WAS
 JV4273'IMPOSSIBLE TO CHECK THE POSITION OF THE STONE.  HOWEVER, AN
 JV4273'EFFORT WAS MADE TO HOLD THE ANGLE AND DISTANCE TO THE REFERENCE
 JV4273'MARK IN RESETTING AND THE RESULTS GIVEN BELOW WERE OBTAINED.
 JV4273'
 JV4273'THE STATION WAS LOWERED TO 12 INCHES BELOW GROUND SURFACE
 JV4273'AND COVERED BY A LAMPHOLE FRAME AND COVER.
 JV4273
 JV4273                          STATION RECOVERY (1934)
 JV4273
 JV4273'RECOVERY NOTE BY MARYLAND GEODETIC SURVEY 1934
 JV4273'STATION IS ABOUT 2-1/2 MILES NW OF KENSINGTON ON THE E SIDE OF
 JV4273'THE WASHINGTON-ROCKVILLE ROAD, OPPOSITE THE RESIDENCE OF MRS. MORGAN
 JV4273'H. BEACH, NOW KNOWN AS VILLA ROMA.
 JV4273'
 JV4273'STATION MARKED BY A STANDARD BRONZE DISK SET IN A GRANITE
 JV4273'POST AND IS ENCLOSED BY A MANHOLE WITH REMOVABLE COVER.
 JV4273'
 JV4273'THE TENANT HOUSE HAS BEEN TORN DOWN.
 JV4273
 JV4273                          STATION RECOVERY (1958)
 JV4273
 JV4273'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4273'STATION WAS SEARCHED FOR BUT NOT RECOVERED.  IT IS VERY
 JV4273'APPARENT THAT THIS STATION HAS BEEN DESTROYED WHEN U.S. HIGHWAY
 JV4273'240 WAS WIDENED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3167 ***********************************************************************
 DI3167  DESIGNATION -  BEACH 1
 DI3167  PID         -  DI3167
 DI3167  STATE/COUNTY-  MD/DORCHESTER
 DI3167  COUNTRY     -  US
 DI3167  USGS QUAD   -  EAST NEW MARKET (2016)
 DI3167
 DI3167                         *CURRENT SURVEY CONTROL
 DI3167  ______________________________________________________________________
 DI3167* NAD 83(2011) POSITION- 38 33 50.88953(N) 075 59 31.71434(W)   ADJUSTED
 DI3167* NAD 83(2011) ELLIP HT-   -28.481 (meters)        (06/27/12)   ADJUSTED
 DI3167* NAD 83(2011) EPOCH   -  2010.00
 DI3167* NAVD 88 ORTHO HEIGHT -     6.7   (meters)       22.    (feet) GPS OBS
 DI3167  ______________________________________________________________________
 DI3167  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3167  GEOID HEIGHT    -        -35.155 (meters)                     GEOID03
 DI3167  GEOID HEIGHT    -        -35.182 (meters)                     GEOID18
 DI3167  NAD 83(2011) X  -  1,208,728.504 (meters)                     COMP
 DI3167  NAD 83(2011) Y  - -4,845,114.621 (meters)                     COMP
 DI3167  NAD 83(2011) Z  -  3,954,580.949 (meters)                     COMP
 DI3167  LAPLACE CORR    -         -2.74  (seconds)                    DEFLEC18
 DI3167
 DI3167  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3167  Standards:
 DI3167         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3167            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3167  -------------------------------------------------------------------
 DI3167  NETWORK    0.64   0.86           0.29   0.22   0.44      0.16996897
 DI3167  -------------------------------------------------------------------
 DI3167  Click here for local accuracies and other accuracy information.
 DI3167
 DI3167.The horizontal coordinates were established by GPS observations
 DI3167.and adjusted by the National Geodetic Survey in June 2012.
 DI3167
 DI3167.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3167.been affixed to the stable North American tectonic plate. See 
 DI3167.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3167
 DI3167.The horizontal coordinates are valid at the epoch date displayed above
 DI3167.which is a decimal equivalence of Year/Month/Day.
 DI3167
 DI3167.The orthometric height was determined by GPS observations and a
 DI3167.high-resolution geoid model.
 DI3167
 DI3167.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3167.GEOID18 height accuracy estimate available here.
 DI3167
 DI3167.Click photographs - Photos may exist for this station.
 DI3167
 DI3167.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3167
 DI3167.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3167
 DI3167.The ellipsoidal height was determined by GPS observations
 DI3167.and is referenced to NAD 83.
 DI3167
 DI3167. The following values were computed from the NAD 83(2011) position.
 DI3167
 DI3167;                    North         East     Units Scale Factor Converg.
 DI3167;SPC MD       -   100,107.482   487,835.252   MT  0.99996456   +0 37 57.2
 DI3167;SPC MD       -   328,435.96  1,600,506.16   sFT  0.99996456   +0 37 57.2
 DI3167;UTM  18      - 4,268,876.652   413,563.047   MT  0.99969201   -0 37 06.7
 DI3167
 DI3167!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3167!SPC MD       -   1.00000447  x   0.99996456  =   0.99996903
 DI3167!UTM  18      -   1.00000447  x   0.99969201  =   0.99969648
 DI3167
 DI3167_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1356368876(NAD 83)
 DI3167
 DI3167|---------------------------------------------------------------------|
 DI3167| PID    Reference Object                     Distance      Geod. Az  |
 DI3167|                                                           dddmmss.s |
 DI3167| DI3168 BEACH 2                             360.995 METERS 22325     |
 DI3167|---------------------------------------------------------------------|
 DI3167
 DI3167                          SUPERSEDED SURVEY CONTROL
 DI3167
 DI3167  NAD 83(1991)-  38 33 50.88974(N)    075 59 31.71516(W) AD(       ) 1
 DI3167  ELLIP H (01/05/07)  -28.445  (m)                       GP(       ) 4 2
 DI3167
 DI3167.Superseded values are not recommended for survey control.
 DI3167
 DI3167.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3167.See file dsdata.pdf to determine how the superseded data were derived.
 DI3167
 DI3167_MARKER: DD = SURVEY DISK
 DI3167_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3167_STAMPING: BEACH 1
 DI3167_MARK LOGO: MD-019
 DI3167_PROJECTION: RECESSED 8 CENTIMETERS
 DI3167_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3167_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3167+STABILITY: SURFACE MOTION
 DI3167_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3167+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3167
 DI3167  HISTORY     - Date     Condition        Report By
 DI3167  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3167
 DI3167                          STATION DESCRIPTION
 DI3167
 DI3167'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3167'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR LINKWOOD,
 DI3167'MARYLAND.  IT IS  ABOUT 4.6 MI (7.4 KM) EAST OF CAMBRIDGE, MARYLAND,
 DI3167'ABOUT 15.1 MI (24.3 KM) SOUTHEAST OF  EASTON, MARYLAND AND ABOUT 25.3
 DI3167'MI (40.7 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3167'
 DI3167'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3167'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHEAST ON SR 16 FOR 1.0 MI
 DI3167'(1.6 KM) TO THE STATION ON THE LEFT.               STATION IS 18.0 FT
 DI3167'(1.3 M) NORTHWEST OF THE NORTHWEST EDGE OF SR 16,  17.5 FT (4.6 M)
 DI3167'WEST  OF LANE DIRECTION SIGN AND 44.00 FT (19.2 M) SOUTHWEST OF
 DI3167'UTILITY POLE DPL 35675-00480.  3 IN  BRASS DISK STAMPED BEACH 1 SET IN
 DI3167'THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT RECESSED  0.30 FT BELOW
 DI3167'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4272 ***********************************************************************
 JV4272  DESIGNATION -  BEACH 2
 JV4272  PID         -  JV4272
 JV4272  STATE/COUNTY-  MD/MONTGOMERY
 JV4272  COUNTRY     -  US
 JV4272  USGS QUAD   -  KENSINGTON (2016)
 JV4272
 JV4272                         *CURRENT SURVEY CONTROL
 JV4272  ______________________________________________________________________
 JV4272* NAD 83(1993) POSITION- 39 02 44.22027(N) 077 06 47.35934(W)   ADJUSTED
 JV4272* NAVD 88 ORTHO HEIGHT -   126.    (meters)      413.    (feet) SCALED
 JV4272  ______________________________________________________________________
 JV4272  GEOID HEIGHT    -        -31.795 (meters)                     GEOID18
 JV4272  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 JV4272  HORZ ORDER      -  SECOND
 JV4272
 JV4272.The horizontal coordinates were established by classical geodetic methods
 JV4272.and adjusted by the National Geodetic Survey in November 1994.
 JV4272
 JV4272.The orthometric height was scaled from a topographic map.
 JV4272
 JV4272.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4272.GEOID18 height accuracy estimate available here.
 JV4272
 JV4272.Click photographs - Photos may exist for this station.
 JV4272
 JV4272.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4272
 JV4272. The following values were computed from the NAD 83(1993) position.
 JV4272
 JV4272;                    North         East     Units Scale Factor Converg.
 JV4272;SPC MD       -   153,076.226   390,204.505   MT  0.99995423   -0 04 15.7
 JV4272;SPC MD       -   502,217.58  1,280,195.95   sFT  0.99995423   -0 04 15.7
 JV4272;SPC VA N     - 2,153,972.096 3,620,052.765   MT  0.99997625   +0 51 56.0
 JV4272;SPC VA N     - 7,066,823.45 11,876,789.78   sFT  0.99997625   +0 51 56.0
 JV4272;UTM  18      - 4,323,963.630   317,127.073   MT  1.00001180   -1 19 53.5
 JV4272
 JV4272!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4272!SPC MD       -   0.99998525  x   0.99995423  =   0.99993949
 JV4272!SPC VA N     -   0.99998525  x   0.99997625  =   0.99996151
 JV4272!UTM  18      -   0.99998525  x   1.00001180  =   0.99999705
 JV4272
 JV4272_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1712723963(NAD 83)
 JV4272
 JV4272                          SUPERSEDED SURVEY CONTROL
 JV4272
 JV4272  NAD 83(1991)-  39 02 44.21990(N)    077 06 47.36001(W) AD(       ) 2
 JV4272  NAD 83(1986)-  39 02 44.21929(N)    077 06 47.36932(W) AD(       ) 2
 JV4272  NAD 27      -  39 02 43.83000(N)    077 06 48.44100(W) AD(       ) 2
 JV4272  USSD        -  39 02 44.14900(N)    077 06 48.25200(W) AD(       ) 3
 JV4272
 JV4272.Superseded values are not recommended for survey control.
 JV4272
 JV4272.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4272.See file dsdata.pdf to determine how the superseded data were derived.
 JV4272
 JV4272_MARKER: Z = SEE DESCRIPTION
 JV4272_SETTING: 0 = UNSPECIFIED SETTING
 JV4272_SP_SET: WINDMILL BASE
 JV4272
 JV4272  HISTORY     - Date     Condition        Report By
 JV4272  HISTORY     - 1924     MONUMENTED       WSSC
 JV4272  HISTORY     - 1957     GOOD             PEPCO
 JV4272
 JV4272                          STATION DESCRIPTION
 JV4272
 JV4272'DESCRIBED BY WASH SUBURB SAN COMM 1924
 JV4272'STATION IS ON BEACHS PROPERTY, 3-1/2 MI. S ON THE
 JV4272'GEORGETOWN-ROCKVILLE PIKE FROM THE ROCKVILLE COURTHOUSE.  MARK
 JV4272'IS A BRASS SCREW SET IN THE CONCRETE BASE OF THE WINDMILL, 63.34
 JV4272'FT. FROM THE SW CORNER AND 35.65 FT. FROM THE NW CORNER OF
 JV4272'BEACHS HOUSE, AND 306.63 FT. N 60 DEG 22 MIN 32 SEC W FROM
 JV4272'STATION BEACH.
 JV4272
 JV4272                          STATION RECOVERY (1957)
 JV4272
 JV4272'RECOVERY NOTE BY POTOMAC EDISON POWER COMPANY 1957 (AEG)
 JV4272'STATION FOUND TO BE IN GOOD CONDITION.  AZIMUTH IN GOOD
 JV4272'CONDITION.  DESCRIPTION OF STATION IS ACCURATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3168 ***********************************************************************
 DI3168  DESIGNATION -  BEACH 2
 DI3168  PID         -  DI3168
 DI3168  STATE/COUNTY-  MD/DORCHESTER
 DI3168  COUNTRY     -  US
 DI3168  USGS QUAD   -  EAST NEW MARKET (2016)
 DI3168
 DI3168                         *CURRENT SURVEY CONTROL
 DI3168  ______________________________________________________________________
 DI3168* NAD 83(2011) POSITION- 38 33 42.38453(N) 075 59 41.96095(W)   ADJUSTED
 DI3168* NAD 83(2011) ELLIP HT-   -28.249 (meters)        (06/27/12)   ADJUSTED
 DI3168* NAD 83(2011) EPOCH   -  2010.00
 DI3168* NAVD 88 ORTHO HEIGHT -     6.9   (meters)       23.    (feet) GPS OBS
 DI3168  ______________________________________________________________________
 DI3168  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3168  GEOID HEIGHT    -        -35.154 (meters)                     GEOID03
 DI3168  GEOID HEIGHT    -        -35.181 (meters)                     GEOID18
 DI3168  NAD 83(2011) X  -  1,208,527.419 (meters)                     COMP
 DI3168  NAD 83(2011) Y  - -4,845,333.460 (meters)                     COMP
 DI3168  NAD 83(2011) Z  -  3,954,376.031 (meters)                     COMP
 DI3168  LAPLACE CORR    -         -2.75  (seconds)                    DEFLEC18
 DI3168
 DI3168  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3168  Standards:
 DI3168         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3168            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3168  -------------------------------------------------------------------
 DI3168  NETWORK    0.65   0.86           0.30   0.22   0.44      0.16702193
 DI3168  -------------------------------------------------------------------
 DI3168  Click here for local accuracies and other accuracy information.
 DI3168
 DI3168.The horizontal coordinates were established by GPS observations
 DI3168.and adjusted by the National Geodetic Survey in June 2012.
 DI3168
 DI3168.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3168.been affixed to the stable North American tectonic plate. See 
 DI3168.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3168
 DI3168.The horizontal coordinates are valid at the epoch date displayed above
 DI3168.which is a decimal equivalence of Year/Month/Day.
 DI3168
 DI3168.The orthometric height was determined by GPS observations and a
 DI3168.high-resolution geoid model.
 DI3168
 DI3168.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3168.GEOID18 height accuracy estimate available here.
 DI3168
 DI3168.Click photographs - Photos may exist for this station.
 DI3168
 DI3168.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3168
 DI3168.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3168
 DI3168.The ellipsoidal height was determined by GPS observations
 DI3168.and is referenced to NAD 83.
 DI3168
 DI3168. The following values were computed from the NAD 83(2011) position.
 DI3168
 DI3168;                    North         East     Units Scale Factor Converg.
 DI3168;SPC MD       -    99,842.518   487,590.094   MT  0.99996478   +0 37 50.8
 DI3168;SPC MD       -   327,566.66  1,599,701.83   sFT  0.99996478   +0 37 50.8
 DI3168;UTM  18      - 4,268,617.174   413,312.231   MT  0.99969254   -0 37 13.0
 DI3168
 DI3168!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3168!SPC MD       -   1.00000443  x   0.99996478  =   0.99996921
 DI3168!UTM  18      -   1.00000443  x   0.99969254  =   0.99969697
 DI3168
 DI3168_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1331268617(NAD 83)
 DI3168
 DI3168|---------------------------------------------------------------------|
 DI3168| PID    Reference Object                     Distance      Geod. Az  |
 DI3168|                                                           dddmmss.s |
 DI3168| DI3167 BEACH 1                             360.995 METERS 04324     |
 DI3168|---------------------------------------------------------------------|
 DI3168
 DI3168                          SUPERSEDED SURVEY CONTROL
 DI3168
 DI3168  NAD 83(1991)-  38 33 42.38474(N)    075 59 41.96177(W) AD(       ) 1
 DI3168  ELLIP H (01/05/07)  -28.213  (m)                       GP(       ) 4 2
 DI3168
 DI3168.Superseded values are not recommended for survey control.
 DI3168
 DI3168.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3168.See file dsdata.pdf to determine how the superseded data were derived.
 DI3168
 DI3168_MARKER: DD = SURVEY DISK
 DI3168_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3168_STAMPING: BEACH 2
 DI3168_MARK LOGO: MD-019
 DI3168_PROJECTION: RECESSED 8 CENTIMETERS
 DI3168_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3168_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3168+STABILITY: SURFACE MOTION
 DI3168_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3168+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3168
 DI3168  HISTORY     - Date     Condition        Report By
 DI3168  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3168
 DI3168                          STATION DESCRIPTION
 DI3168
 DI3168'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3168'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR LINKWOOD,
 DI3168'MARYLAND.  IT IS  ABOUT 4.5 MI (7.2 KM) EAST OF CAMBRIDGE, MARYLAND,
 DI3168'ABOUT 15.3 MI (24.6 KM) SOUTHEAST OF  EASTON, MARYLAND AND ABOUT 25.5
 DI3168'MI (41.0 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3168'
 DI3168'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3168'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHEAST ON SR 16 FOR 0.8 MI
 DI3168'(1.3 KM) TO THE STATION ON THE LEFT.          STATION IS 24.5 FT (1.3
 DI3168'M) NORTHWEST OF THE NORTHWEST EDGE OF SR 16,  8.75 FT (4.6 M)
 DI3168'NORTHEAST OF THE NORTHEAST EDGE OF GRAVEL DRIVEWAY AND 38.5 FT (19.2
 DI3168'M) WEST OF UTILITY  POLE DPL 35587-00390.  3 IN BRASS DISK STAMPED
 DI3168'BEACH 2 SET IN THE TOP OF A 1 FT (0.3 M)  CONCRETE MONUMENT RECESSED
 DI3168'0.30 FT BELOW THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5094 ***********************************************************************
 JV5094  DESIGNATION -  BEACH POINT
 JV5094  PID         -  JV5094
 JV5094  STATE/COUNTY-  MD/KENT
 JV5094  COUNTRY     -  US
 JV5094  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5094
 JV5094                         *CURRENT SURVEY CONTROL
 JV5094  ______________________________________________________________________
 JV5094* NAD 83(1991) POSITION- 39 01 42.46950(N) 076 14 33.24296(W)   ADJUSTED
 JV5094* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5094  ______________________________________________________________________
 JV5094  GEOID HEIGHT    -        -33.571 (meters)                     GEOID18
 JV5094  LAPLACE CORR    -         -2.42  (seconds)                    DEFLEC18
 JV5094  HORZ ORDER      -  THIRD
 JV5094
 JV5094.The horizontal coordinates were established by classical geodetic methods
 JV5094.and adjusted by the National Geodetic Survey in January 1992.
 JV5094
 JV5094.The orthometric height was scaled from a topographic map.
 JV5094
 JV5094.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5094.GEOID18 height accuracy estimate available here.
 JV5094
 JV5094.Click photographs - Photos may exist for this station.
 JV5094
 JV5094.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5094
 JV5094. The following values were computed from the NAD 83(1991) position.
 JV5094
 JV5094;                    North         East     Units Scale Factor Converg.
 JV5094;SPC MD       -   151,438.063   465,583.548   MT  0.99995339   +0 28 31.4
 JV5094;SPC MD       -   496,843.05  1,527,502.02   sFT  0.99995339   +0 28 31.4
 JV5094;UTM  18      - 4,320,669.712   392,445.260   MT  0.99974244   -0 46 57.1
 JV5094
 JV5094!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5094!SPC MD       -   1.00000515  x   0.99995339  =   0.99995854
 JV5094!UTM  18      -   1.00000515  x   0.99974244  =   0.99974759
 JV5094
 JV5094:                Primary Azimuth Mark                     Grid Az
 JV5094:SPC MD       -  NARROWS POINT                            132 30 48.7
 JV5094:UTM  18      -  NARROWS POINT                            133 46 17.2
 JV5094
 JV5094_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9244520669(NAD 83)
 JV5094
 JV5094|---------------------------------------------------------------------|
 JV5094| PID    Reference Object                     Distance      Geod. Az  |
 JV5094|                                                           dddmmss.s |
 JV5094| JV5061 NARROWS POINT                       APPROX. 3.1 KM 1325920.1 |
 JV5094| HV5793 WRIGHTS HOUSE WEST CHIMNEY          APPROX. 6.4 KM 1812436.9 |
 JV5094| JV5163 THREE CHIMNEY HOUSE EAST CHIM       APPROX. 5.1 KM 2471500.5 |
 JV5094| JV5164 KENT ISLAND WHARF HOUSE BELFRY      APPROX. 4.8 KM 2481918.9 |
 JV5094|---------------------------------------------------------------------|
 JV5094
 JV5094                          SUPERSEDED SURVEY CONTROL
 JV5094
 JV5094  NAD 83(1986)-  39 01 42.46445(N)    076 14 33.25473(W) AD(       ) 3
 JV5094  NAD 27      -  39 01 42.06400(N)    076 14 34.40600(W) AD(       ) 3
 JV5094  USSD        -  39 01 42.42400(N)    076 14 34.23900(W) AD(       ) 3
 JV5094
 JV5094.Superseded values are not recommended for survey control.
 JV5094
 JV5094.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5094.See file dsdata.pdf to determine how the superseded data were derived.
 JV5094
 JV5094_MARKER: N = NAIL
 JV5094_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV5094_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5094
 JV5094  HISTORY     - Date     Condition        Report By
 JV5094  HISTORY     - 1896     MONUMENTED       CGS
 JV5094  HISTORY     - 1932     MARK NOT FOUND   CGS
 JV5094
 JV5094                          STATION DESCRIPTION
 JV5094
 JV5094'DESCRIBED BY COAST AND GEODETIC SURVEY 1896 (JAF)
 JV5094'STATION IS ON THE WESTERN SHORE OF EAST NECK ISLAND ON A
 JV5094'BEACH KNOWN AS WICKES BEACH, 7 PACES N 27 DEG 30 MIN W (MAGNETIC)
 JV5094'FROM THE NE END OF THE GRAVE OF AN UNKNOWN SAILOR WHOSE BODY
 JV5094'WAS WASHED ASHORE AT THIS POINT.  THE STATION IS ALMOST S
 JV5094'(MAGNETIC) FROM A FRINGE OF TREES ON W SHORE SKIRTING LOW
 JV5094'BANK AT FENCE ABOVE WHICH IS OPEN FIELD.
 JV5094'
 JV5094'THE STATION IS MARKED BY A NAIL IN A 3-INCH CEMENT-FILLED
 JV5094'TILE PIPE.  THE TOP IS 6 INCHES BELOW SURFACE AND SURROUNDED BY
 JV5094'CEMENT BEARING THE LEGEND U.S.C.S. 1896.  THE MAGNETIC BEARING
 JV5094'OF TANGENT TO SOUTHERLY EDGE OF WOODS JUST ABOVE CABIN COVE IS S
 JV5094'73 DEG 45 MIN E.
 JV5094
 JV5094                          STATION RECOVERY (1932)
 JV5094
 JV5094'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (JAB)
 JV5094'STATION COULD NOT BE FOUND.
 JV5094'
 JV5094'DESCRIPTION INADEQUATE DUE TO CHANGED TOPOGRAPHY AND BEACH
 JV5094'EROSION.  ONE AND ONE-HALF DAYS WERE SPENT IN SEARCHING FOR THIS
 JV5094'STATION AND STATION WICKES BEACH, INCLUDING BURNING OFF SECTIONS
 JV5094'OF THE BEACH AND CONSIDERABLE DIGGING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1574 ***********************************************************************
 HU1574  DESIGNATION -  BEACON CLUMPS
 HU1574  PID         -  HU1574
 HU1574  STATE/COUNTY-  MD/WORCESTER
 HU1574  COUNTRY     -  US
 HU1574  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1574
 HU1574                         *CURRENT SURVEY CONTROL
 HU1574  ______________________________________________________________________
 HU1574* NAD 83(1993) POSITION- 38 08 12.67833(N) 075 12 20.43568(W)   ADJUSTED
 HU1574* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1574  ______________________________________________________________________
 HU1574  GEOID HEIGHT    -        -36.298 (meters)                     GEOID18
 HU1574  LAPLACE CORR    -          0.41  (seconds)                    DEFLEC18
 HU1574  HORZ ORDER      -  SECOND
 HU1574
 HU1574.The horizontal coordinates were established by classical geodetic methods
 HU1574.and adjusted by the National Geodetic Survey in November 1994.
 HU1574
 HU1574.The orthometric height was scaled from a topographic map.
 HU1574
 HU1574.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1574.GEOID18 height accuracy estimate available here.
 HU1574
 HU1574.Click photographs - Photos may exist for this station.
 HU1574
 HU1574.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1574
 HU1574. The following values were computed from the NAD 83(1993) position.
 HU1574
 HU1574;                    North         East     Units Scale Factor Converg.
 HU1574;SPC MD       -    53,739.360   557,301.476   MT  1.00003239   +1 07 34.2
 HU1574;SPC MD       -   176,309.88  1,828,413.26   sFT  1.00003239   +1 07 34.2
 HU1574;UTM  18      - 4,221,019.532   481,975.747   MT  0.99960400   -0 07 37.3
 HU1574
 HU1574!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1574!SPC MD       -   1.00000558  x   1.00003239  =   1.00003797
 HU1574!UTM  18      -   1.00000558  x   0.99960400  =   0.99960957
 HU1574
 HU1574:                Primary Azimuth Mark                     Grid Az
 HU1574:SPC MD       -  ISLAND POINT HOUSE CEN CHIMNEY           002 27 32.0
 HU1574:UTM  18      -  ISLAND POINT HOUSE CEN CHIMNEY           003 42 43.5
 HU1574
 HU1574_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8197521019(NAD 83)
 HU1574
 HU1574|---------------------------------------------------------------------|
 HU1574| PID    Reference Object                     Distance      Geod. Az  |
 HU1574|                                                           dddmmss.s |
 HU1574| DC7820 BEACON CLUMPS RM 3                                 00107     |
 HU1574| HU1590 ISLAND POINT HOUSE CEN CHIMNEY      APPROX. 8.6 KM 0033506.2 |
 HU1574| DC7819 BEACON CLUMPS RM 2                   13.740 METERS 01157     |
 HU1574| DC7818 BEACON CLUMPS RM 1                   10.655 METERS 10040     |
 HU1574| HU1572 GREEN RUN INLET LSS FLAGSTAFF       APPROX. 5.8 KM 1763110.9 |
 HU1574|---------------------------------------------------------------------|
 HU1574
 HU1574                          SUPERSEDED SURVEY CONTROL
 HU1574
 HU1574  NAD 83(1991)-  38 08 12.67746(N)    075 12 20.43612(W) AD(       ) 2
 HU1574  NAD 83(1986)-  38 08 12.66679(N)    075 12 20.47174(W) AD(       ) 2
 HU1574  NAD 27      -  38 08 12.23450(N)    075 12 21.78887(W) AD(       ) 2
 HU1574  USSD        -  38 08 12.42800(N)    075 12 21.52700(W) AD(       ) 3
 HU1574
 HU1574.Superseded values are not recommended for survey control.
 HU1574
 HU1574.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1574.See file dsdata.pdf to determine how the superseded data were derived.
 HU1574
 HU1574_MARKER: H = DRILL HOLE
 HU1574_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1574
 HU1574  HISTORY     - Date     Condition        Report By
 HU1574  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1574  HISTORY     - 1933     GOOD             CGS
 HU1574  HISTORY     - 1942     GOOD             CGS
 HU1574  HISTORY     - 1958     GOOD             CGS
 HU1574  HISTORY     - 1959     GOOD             CGS
 HU1574  HISTORY     - 1962     GOOD             CGS
 HU1574
 HU1574                          STATION DESCRIPTION
 HU1574
 HU1574'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1574'ON THE EASTERLY SIDE OF UPPER CHINCOTEAGUE BAY, ON THE SOUTHERN
 HU1574'AND LARGER OF TWO SMALL MARSH ISLANDS CALLED BEACON CLUMPS,
 HU1574'COVERED AT EXTREME HIGH WATER.  FROM THE STATION TO THE SHORE
 HU1574'ON THE N IS 35 YARDS, ON THE E 22 YARDS, ON THE S 28 YARDS, AND
 HU1574'ON THE W 75 YARDS.
 HU1574'
 HU1574'STATION MARK IS CENTER OF STANDARD CEMENT MONUMENT OF THE
 HU1574'MARYLAND SHELL FISH SURVEY WHICH PROJECTS 3 TO 5 INCHES ABOVE
 HU1574'SURFACE WHICH IS MADE OF CONCRETE 2
 HU1574'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1574'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1574'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1574'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1574'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1574'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1574'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1574'THE LOCATION OF THE STATION.
 HU1574'
 HU1574'THE OTHER MARSH ISLAND IS 1/4 MILE FROM THE STATION N 37 DEG 00 MIN E.
 HU1574
 HU1574                          STATION RECOVERY (1933)
 HU1574
 HU1574'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (IER)
 HU1574'DESCRIPTION ADEQUATE.  STATION RECOVERED.  TWO REFERENCE MARKS
 HU1574'SET.  STANDARD BRONZE DISKS IN CONCRETE, IN THE TOP OF TILE AS
 HU1574'DESCRIBED.
 HU1574
 HU1574                          STATION RECOVERY (1942)
 HU1574
 HU1574'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1574'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HU1574'ORIGINAL DESCRIPTION--
 HU1574'
 HU1574'(1) DELETE - SOUTHERN AND LARGER OF TWO ISLANDS, SINCE ONE OF
 HU1574'THE ISLANDS HAS DISAPPEARED.
 HU1574'
 HU1574'(2) 23 YARDS FROM THE STATION TO THE SHORE ON THE N, NOT 35 YARDS.
 HU1574'
 HU1574'(3) 35 YARDS FROM THE STATION TO THE SHORE ON THE E, NOT 22 YARDS.
 HU1574'
 HU1574'(4) 15 YARDS FROM THE STATION TO THE SHORE ON THE S, NOT 28 YARDS.
 HU1574'
 HU1574'(5) REFERENCE MARK NO.1 IS 10.739 METERS ENE OF THE STATION,
 HU1574'NOT 10.655 METERS.
 HU1574'
 HU1574'(6) REFERENCE MARK NO.2 IS 13.410 METERS N OF THE STATION, NOT
 HU1574'13.740 METERS.
 HU1574'
 HU1574'A NEW DESCRIPTION FOLLOWS--
 HU1574'
 HU1574'THE STATION IS LOCATED ON THE EASTERLY SIDE OF UPPER CHINCOTEAGUE
 HU1574'BAY, ON A SMALL MARSH ISLAND, CALLED BEACON CLUMPS, COVERED AT
 HU1574'EXTREME HIGH WATER, 23 YARDS FROM THE NORTHERN SHORE, 35 YARDS
 HU1574'FROM THE EASTERN SHORE, 15 YARDS FROM THE SOUTHERN SHORE, AND
 HU1574'57 YARDS FROM THE WESTERN SHORE.  THE STATION IS MARKED BY A
 HU1574'STANDARD 9-INCH SQUARE CONCRETE MONUMENT OF THE MARYLAND SHELL
 HU1574'FISH SURVEY, WITH MSFC-USCS COUNTERSUNK IN THE TOP, AND
 HU1574'EXTENDING 5 INCHES ABOVE THE GROUND.  TH STATION IS IN GOOD
 HU1574'CONDITION.
 HU1574'
 HU1574'REFERENCE MARK NO.1 IS LOCATED 10.739 METERS ENE OF THE
 HU1574'STATION.  THE MARK IS A BRONZE DISK REFERENCE MARK, WITH THE
 HU1574'ARROW POINTING TOWARD THE STATION, STAMPED 1, 1933, SET IN
 HU1574'CONCRETE IN AN 8-INCH TERRA-COTTA PIPE, WHICH PROJECTS 3 INCHES
 HU1574'ABOVE THE GROUND.  THE MARK IS IN VERY POOR CONDITION AS IT HAS
 HU1574'SUNK AND IS TILTED AT A 45 DEG ANGLE.
 HU1574'
 HU1574'REFERENCE MARK NO.2 IS LOCATED 13.410 METERS N OF THE STATION.  THE
 HU1574'MARK IS A BRONZE DISK REFERENCE MARK, WITH THE ARROW POINTING
 HU1574'TOWARD THE STATION, STAMPED 2 1933, SET IN CONCRETE IN AN 8-INCH
 HU1574'TERRA-COTTA PIPE, FLUSH WITH THE GROUND.  THE MARK IS IN VERY
 HU1574'POOR CONDITION AS IT HAS SUNK, AND IS TILTED AT A 45 DEG ANGLE.
 HU1574
 HU1574                          STATION RECOVERY (1958)
 HU1574
 HU1574'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1574'STATION RECOVERED AS DESCRIBED.  THE ISLAND THE STATION IS ON
 HU1574'HAS WASHED AWAY UNTIL IT IS ONLY 65 PACES E-W, BY 21 PACES N-S.
 HU1574'
 HU1574'THE STATION IS 54 FT. S OF THE N SHORE, 21 FT. N OF THE S SHORE,
 HU1574'90 FT. WSW OF THE NE POINT OF THE ISLAND.  THE STATION MARK IS
 HU1574'SURROUNDED BY 4 STAKES AND IS FLUSH WITH THE GROUND.
 HU1574'
 HU1574'REFERENCE MARK NO. 1 IS 65 FT. S OF N SHORE, 15 FT. W OF E
 HU1574'SHORE, 10 FT. N OF S SHORE.  IT IS SURROUNDED BY 4 STAKES AND
 HU1574'IS ABOUT 3 INCHES UNDERGROUND.
 HU1574'
 HU1574'REFERENCE MARK NO. 2 WAS NOT RECOVERED.
 HU1574
 HU1574                          STATION RECOVERY (1959)
 HU1574
 HU1574'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (WER)
 HU1574'THE STATION MARK WAS RECOVERED AS DESCRIBED AND FOUND IN GOOD
 HU1574'CONDITION.  REFERENCE MARK NO. 1 IS TILTED TO THE SOUTHEAST.  ITS
 HU1574'DISTANCE HAS CHANGED BUT THE MARK IS SOLID AT PRESENT.  REFERENCE
 HU1574'MARK NO. 2 WAS FOUND LYING ON ITS SIDE AND WAS DESTROYED.  THE
 HU1574'DESCRIPTION IS ADEQUATE EXCEPT FOR THE FOLLOWING--
 HU1574'
 HU1574'THE STATION MARK IS 21 FEET NORTH OF THE SOUTH SHORELINE, 57
 HU1574'FEET SOUTH OF THE NORTH SHORELINE AND 138 FEET EAST OF THE WEST
 HU1574'SHORELINE.
 HU1574'
 HU1574'REFERENCE MARK NO. 1 IS 58 FEET SOUTH OF THE NORTH SHORELINE
 HU1574'AND 13 FEET NORTH OF THE SOUTH SHORELINE.
 HU1574'
 HU1574'REFERENCE MARK NO. 3, A STANDARD DISK STAMPED BEACON CLUMPS NO 3
 HU1574'1959, IS SET IN CONCRETE AT THE CENTER OF A 6-INCH TERRACOTTA
 HU1574'PIPE AND PROJECTS 7 INCHES.  IT IS 11 FEET SOUTH OF THE NORTH
 HU1574'SHORELINE AND 80 FEET WEST OF THE EAST SHORELINE.  (THIS MARK
 HU1574'WAS ESTABLISHED BY THIS PARTY.)
 HU1574
 HU1574                          STATION RECOVERY (1962)
 HU1574
 HU1574'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (CFO)
 HU1574'THE STATION AND REFERENCE MARK 3 WAS RECOVERED IN GOOD CONDITION.
 HU1574'
 HU1574'REFERENCE MARK 1 RECOVERED IN POOR CONDITION.  IT IS TILTED AS
 HU1574'STATED IN THE 1942 RECOVERY NOTE.
 HU1574'
 HU1574'THE STATION IS 52.4 FEET SSE OF THE WATER LINE AND IS SURROUNDED
 HU1574'BY NUMEROUS SHORT STAKES.
 HU1574'
 HU1574'THE ISLAND HAS WASHED AWAY UNTIL IT IS ABOUT 150 FEET LONG AND
 HU1574'60 FEET WIDE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1091 ***********************************************************************
 HV1091  DESIGNATION -  BEALLE
 HV1091  PID         -  HV1091
 HV1091  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1091  COUNTRY     -  US
 HV1091  USGS QUAD   -  PISCATAWAY (2016)
 HV1091
 HV1091                         *CURRENT SURVEY CONTROL
 HV1091  ______________________________________________________________________
 HV1091* NAD 83(2011) POSITION- 38 40 08.05138(N) 076 59 35.49994(W)   ADJUSTED
 HV1091* NAD 83(2011) ELLIP HT-    28.911 (meters)        (06/27/12)   ADJUSTED
 HV1091* NAD 83(2011) EPOCH   -  2010.00
 HV1091* NAVD 88 ORTHO HEIGHT -    61.525 (meters)      201.85  (feet) ADJUSTED
 HV1091  ______________________________________________________________________
 HV1091  GEOID HEIGHT    -        -32.584 (meters)                     GEOID18
 HV1091  NAD 83(2011) X  -  1,122,272.682 (meters)                     COMP
 HV1091  NAD 83(2011) Y  - -4,858,464.105 (meters)                     COMP
 HV1091  NAD 83(2011) Z  -  3,963,703.767 (meters)                     COMP
 HV1091  LAPLACE CORR    -         -3.88  (seconds)                    DEFLEC18
 HV1091  DYNAMIC HEIGHT  -         61.490 (meters)      201.74  (feet) COMP
 HV1091  MODELED GRAVITY -    980,065.5   (mgal)                       NAVD 88
 HV1091
 HV1091  VERT ORDER      -  SECOND    CLASS 0
 HV1091
 HV1091  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV1091  Standards:
 HV1091         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV1091            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV1091  -------------------------------------------------------------------
 HV1091  NETWORK    1.47   3.33           0.58   0.62   1.70     -0.12827076
 HV1091  -------------------------------------------------------------------
 HV1091  Click here for local accuracies and other accuracy information.
 HV1091
 HV1091.The horizontal coordinates were established by GPS observations
 HV1091.and adjusted by the National Geodetic Survey in June 2012.
 HV1091
 HV1091.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV1091.been affixed to the stable North American tectonic plate. See 
 HV1091.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV1091
 HV1091.The horizontal coordinates are valid at the epoch date displayed above
 HV1091.which is a decimal equivalence of Year/Month/Day.
 HV1091
 HV1091.The orthometric height was determined by differential leveling and
 HV1091.adjusted by the NATIONAL GEODETIC SURVEY
 HV1091.in June 1991.
 HV1091
 HV1091.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1091.GEOID18 height accuracy estimate available here.
 HV1091
 HV1091.Click photographs - Photos may exist for this station.
 HV1091
 HV1091.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV1091
 HV1091.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1091
 HV1091.The ellipsoidal height was determined by GPS observations
 HV1091.and is referenced to NAD 83.
 HV1091
 HV1091.The dynamic height is computed by dividing the NAVD 88
 HV1091.geopotential number by the normal gravity value computed on the
 HV1091.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1091.degrees latitude (g = 980.6199 gals.).
 HV1091
 HV1091.The modeled gravity was interpolated from observed gravity values.
 HV1091
 HV1091. The following values were computed from the NAD 83(2011) position.
 HV1091
 HV1091;                    North         East     Units Scale Factor Converg.
 HV1091;SPC MD       -   111,252.183   400,592.254   MT  0.99995633   +0 00 15.4
 HV1091;SPC MD       -   364,999.87  1,314,276.42   sFT  0.99995633   +0 00 15.4
 HV1091;SPC VA N     - 2,112,323.093 3,631,122.691   MT  0.99994879   +0 56 25.5
 HV1091;SPC VA N     - 6,930,180.01 11,913,108.36   sFT  0.99994879   +0 56 25.5
 HV1091;UTM  18      - 4,281,920.436   326,596.564   MT  0.99997029   -1 14 44.5
 HV1091
 HV1091!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1091!SPC MD       -   0.99999546  x   0.99995633  =   0.99995179
 HV1091!SPC VA N     -   0.99999546  x   0.99994879  =   0.99994425
 HV1091!UTM  18      -   0.99999546  x   0.99997029  =   0.99996575
 HV1091
 HV1091:                Primary Azimuth Mark                     Grid Az
 HV1091:SPC MD       -  SCHWIEN RESET                            092 45 30.1
 HV1091:SPC VA N     -  SCHWIEN RESET                            091 49 20.0
 HV1091:UTM  18      -  SCHWIEN RESET                            094 00 30.0
 HV1091
 HV1091_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2659681920(NAD 83)
 HV1091
 HV1091|---------------------------------------------------------------------|
 HV1091| PID    Reference Object                     Distance      Geod. Az  |
 HV1091|                                                           dddmmss.s |
 HV1091| HV7434 WASHINGTON NORFOLK AWY BCN 12       APPROX. 1.9 KM 0650303.0 |
 HV1091| HV7397 SCHWIEN RESET                       APPROX.10.4 KM 0924545.5 |
 HV1091| CX2066 BEALLE AZ MK                                       1041947.3 |
 HV1091| CX2067 BEALLE RM 1                          29.600 METERS 18900     |
 HV1091| CX2069 BEALLE RM 4                          35.171 METERS 19403     |
 HV1091| HV5009 INDIAN HEAD TALLER STACK            APPROX.18.1 KM 2400803.8 |
 HV1091| HV5015 INDIAN HEAD SHORT STACK             APPROX.18.2 KM 2401204.9 |
 HV1091| HV5025 FORT BELVOIR BLDG 704 TANK          APPROX.13.2 KM 2814932.7 |
 HV1091| HV1092 BEALLE RM 2                          29.562 METERS 29123     |
 HV1091| CX2068 BEALLE RM 3 AZIMUTH                                3194955.7 |
 HV1091| HV7435 BEALLE RM 5                          32.888 METERS 33053     |
 HV1091| HV4631 ALEXANDRIA WASH MASON MEMORIAL      APPROX.16.6 KM 3374043.7 |
 HV1091|---------------------------------------------------------------------|
 HV1091
 HV1091                          SUPERSEDED SURVEY CONTROL
 HV1091
 HV1091  NAD 83(2007)-  38 40 08.05177(N)    076 59 35.50081(W) AD(2002.00) 0
 HV1091  ELLIP H (02/10/07)   28.908  (m)                       GP(2002.00)    
 HV1091  ELLIP H (08/30/02)   28.916  (m)                       GP(       ) 4 2
 HV1091  NAD 83(1993)-  38 40 08.05141(N)    076 59 35.50114(W) AD(       ) 1
 HV1091  ELLIP H (11/14/94)   28.951  (m)                       GP(       ) 4 2
 HV1091  ELLIP H (09/09/94)   28.942  (m)                       GP(       ) 4 1
 HV1091  NAD 83(1991)-  38 40 08.04983(N)    076 59 35.50208(W) AD(       ) 1
 HV1091  NAD 83(1986)-  38 40 08.05033(N)    076 59 35.51613(W) AD(       ) 1
 HV1091  NAD 27      -  38 40 07.63337(N)    076 59 36.60603(W) AD(       ) 1
 HV1091  NAVD 88              61.52   (m)          201.8    (f) LEVELING    3  
 HV1091  NGVD 29 (05/01/89)   61.762  (m)          202.63   (f) ADJUSTED    2 0
 HV1091  NGVD 29 (??/??/87)   61.811  (m)          202.79   (f) SUPERSEDED  2 0
 HV1091  NGVD 29              61.80   (m)          202.8    (f) LEVELING    3  
 HV1091
 HV1091.Superseded values are not recommended for survey control.
 HV1091
 HV1091.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1091.See file dsdata.pdf to determine how the superseded data were derived.
 HV1091
 HV1091_MARKER: DS = TRIANGULATION STATION DISK
 HV1091_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1091_STAMPING: BEALLE 1934
 HV1091_MARK LOGO: CGS
 HV1091_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV1091_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1091+STABILITY: SURFACE MOTION
 HV1091_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1091+SATELLITE: SATELLITE OBSERVATIONS - August 17, 2000
 HV1091
 HV1091  HISTORY     - Date     Condition        Report By
 HV1091  HISTORY     - 1934     MONUMENTED       CGS
 HV1091  HISTORY     - 1938     GOOD             CGS
 HV1091  HISTORY     - 1942     GOOD             CGS
 HV1091  HISTORY     - 1943     GOOD             CGS
 HV1091  HISTORY     - 1955     GOOD             CGS
 HV1091  HISTORY     - 1957     GOOD             CGS
 HV1091  HISTORY     - 1966     GOOD             MDSRC
 HV1091  HISTORY     - 1970     GOOD             NGS
 HV1091  HISTORY     - 1972     GOOD             NGS
 HV1091  HISTORY     - 19930331 GOOD             MSI
 HV1091  HISTORY     - 19991015 GOOD             GEOMET
 HV1091  HISTORY     - 20000817 GOOD             GEOMET
 HV1091
 HV1091                          STATION DESCRIPTION
 HV1091
 HV1091'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV1091'THIS IS A FIRST ORDER STATION LOCATED 5 MILES WEST OF WALDORF,
 HV1091'MARYLAND.  ON THE PROPERTY OF MR. BEALLE, 11.40 METERS WEST OF
 HV1091'THE CENTERLINE ON THE NORTH AND SOUTH ROAD 12.60 METERS SOUTH
 HV1091'OF THE EAST AND WEST ROAD, 16.8 METERS SOUTH OF A TELEPHONE POLE
 HV1091'NO. 280 BLAZED WITH A TRIANGULATION MARK 6 FEET ABOVE THE GROUND,
 HV1091'12.8 METERS EAST OF THE NORTH EAST CORNER OF AN OLD SHOP, IN THE
 HV1091'SOUTH SIDE OF A T-ROAD.  MARK PROJECTS 6 INCHES.
 HV1091'
 HV1091'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE BRONZE
 HV1091'DISKS SET IN CONCRETE.
 HV1091'
 HV1091'TO REACH FROM WALDORF, MARYLAND, GO WEST FROM THE JUNCTION OF
 HV1091'ROUTE NO. 3 AND THE ONLY PAVED ROAD LEADING WEST.  FOLLOW THIS
 HV1091'ROAD 5.2 MILES TO T-ROAD RIGHT.  FOLLOW THIS DIRT ROAD 1.25 MILE
 HV1091'TO A T-ROAD LEFT AND THE STATION.
 HV1091'
 HV1091'REFERENCE MARK NO. 1 IS LOCATED 29.600 METERS SOUTH OF THE
 HV1091'STATION, 4 PACES WEST OF THE CENTERLINE OF THE NORTH AND SOUTH
 HV1091'ROAD, IN THE FENCE LINE, 8 FENCE POSTS SOUTH OF THE CORNER, MARK
 HV1091'PROJECTS 6 INCHES.
 HV1091'
 HV1091'REFERENCE MARK NO. 2 IS LOCATED 29.545 METERS WEST OF THE
 HV1091'STATION, 2.5 FEET EAST OF TELEPHONE POLE NO. 281, 5 PACES SOUTH
 HV1091'OF THE CENTERLINE OF THE EAST AND WEST T-ROAD.
 HV1091'
 HV1091'REFERENCE MARK NO. 3 IS LOCATED 0.3 MILE NORTHWEST OF THE
 HV1091'STATION IN THE EDGE OF THE WOODS ON THE NORTH SIDE OF A LARGE
 HV1091'CLEARING, 2 PACES SOUTH OF THE SOUTH EDGE OF WOODS LINE, 3 PACES
 HV1091'SOUTHWEST OF A 12-INCH WILD CHERRY TREE.  MARK PROJECTS 6 INCHES.
 HV1091'
 HV1091'103-FOOT TOWER WAS USED AND CLEARED ALL LINES.
 HV1091'
 HV1091'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV1091
 HV1091                          STATION RECOVERY (1938)
 HV1091
 HV1091'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV1091'STATION SURFACE MARK FOUND IN GOOD CONDITION.  REFERENCE MARKS
 HV1091'NOT SEARCHED FOR.  THE FOLLOWING CHANGES IN THE STATION WERE
 HV1091'NOTED--
 HV1091'
 HV1091'COUNTY IS PRINCE GEORGES (NOT CHARLES, AS ORIGINALLY LISTED)
 HV1091'
 HV1091'STATION IS 5 MILES N.W. (AIRLINE) FROM WALDORF, NOT 5 MILES WEST.
 HV1091'
 HV1091'STATION IS 9.2 METERS SOUTH OF CENTERLINE OF E AND W ROAD, NOT
 HV1091'12.6 METERS.  STATION IS 10.5 METERS W. OF CENTERLINE OF N. AND
 HV1091'S. ROAD, NOT 5 MILES WEST.
 HV1091
 HV1091                          STATION RECOVERY (1942)
 HV1091
 HV1091'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV1091'STATION RECOVERED.  ONE REFERENCE MARK DESTROYED BY ROAD
 HV1091'IMPROVEMENT.  THE STATION MARK IS NOW TOO CLOSE TO HIGHWAY TO
 HV1091'CONSTRUCT TOWER OVER MARK.
 HV1091'
 HV1091'REACHED FROM WALDORF BY GOING WEST FROM THE JUNCTION OF
 HV1091'HIGHWAY NO. 3 FOR 5.7 MILES.  HERE TURN RIGHT AND GO 1.25 MILES
 HV1091'TO STATION WHICH IS IN THE SOUTHWEST CORNER OF INTERSECTION.
 HV1091
 HV1091                          STATION RECOVERY (1943)
 HV1091
 HV1091'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV1091'THE STATION, REFERENCE MARK NO. 2, AND THE AZIMUTH MARK WERE
 HV1091'RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK NO. 1
 HV1091'WAS DESTROYED BY ROAD CONSTRUCTION.  A NEW REFERENCE MARK WAS
 HV1091'ESTABLISHED.  FOLLOWING IS A COMPLETE NEW DESCRIPTION.  A
 HV1091'DESCREPANCY WAS NOTED IN THE MEASUREMENT TO REFERENCE MARK
 HV1091'NO. 2.
 HV1091'
 HV1091'THE STATION IS LOCATED ABOUT 5 MILES, AIRLINE, NORTHWEST OF
 HV1091'THE VILLAGE OF WALDORF, ON PROPERTY OWNED BY MR. BEALLE.  IT IS
 HV1091'SITUATED IN THE NORTHEAST CORNER OF THE FRONT LAWN, 39.2 FEET
 HV1091'NORTHEAST OF THE NORTHEAST CORNER OF THE PORCH, 46 FEET WEST
 HV1091'SOUTHWEST OF THE CENTER OF A T-ROAD JUNCTION, 55.6 FEET SOUTH OF
 HV1091'A POWER LINE POLE NO. 27, 63.1 FEET WEST OF A LONE CEDAR TREE.
 HV1091'IT IS STAMPED BEALLE 1934 AND PROJECTS 6 INCHES.
 HV1091'
 HV1091'REFERENCE MARK NO. 2 IS WEST NORTHWEST OF THE STATION AT THE
 HV1091'WEST END OF A HEDGE ROW.  IT IS 5 FEET EAST SOUTHEAST OF A
 HV1091'TELEPHONE POLE NO. 336 AND 17.7 FEET SOUTH OF THE CENTER OF A
 HV1091'MACADAM ROAD.  IT IS STAMPED BEALLE NO. 2 1934 AND PROJECTS 4
 HV1091'INCHES.
 HV1091'
 HV1091'REFERENCE MARK NO. 4 IS SOUTH SOUTHWEST OF THE STATION AT THE
 HV1091'EAST EDGE OF A GARDEN PLOT.  IT IS 40.2 FEET SOUTHEAST OF A
 HV1091'POWER LINE POLE, 19 FEET WEST OF THE CENTER OF A MACADAM ROAD.  IT
 HV1091'IS STAMPED BEALLE NO. 4 1943 AND PROJECTS 6 INCHES.
 HV1091'
 HV1091'REFERENCE MARK NO. 3 (AZIMUTH MARK) IS 0.3 MILE, AIRLINE,
 HV1091'NORTHWEST OF THE STATION AT THE SOUTH EDGE OF A WOODS.  IT IS
 HV1091'ABOUT 0.05 MILE NORTH NORTHWEST OF A SMALL WHITE HOUSE ON A
 HV1091'HILL AND ABOUT 0.05 MILE NORTH OF A RED BRICK HOUSE AND 10 FEET
 HV1091'WEST SOUTHWEST OF AN 18 INCH WILD CHERRY TREE.  IT IS STAMPED
 HV1091'BEALLE NO. 3 1934 AND PROJECTS 6 INCHES.
 HV1091'
 HV1091'TO REACH FROM THE STATION GO WESTERLY ON A MACADAM ROAD TO A
 HV1091'REVERSED FORKS AT A RED BRICK HOUSE.  FROM HERE PROCEED ON FOOT
 HV1091'(NORTHERLY) FOR ABOUT 0.05 MILE TO THE MARK AS DESCRIBED.
 HV1091'
 HV1091'TO REACH THE STATION FROM WALDORF, GO WEST FROM THE JUNCTION OF 301
 HV1091'AND THE ONLY MACADAM ROAD LEADING WEST FOR 5.55 MILES TO A
 HV1091'MACADAM T-ROAD RIGHT.  TURN RIGHT AND GO 1.25 MILES TO THE STATION
 HV1091'ON THE LEFT AS DESCRIBED.
 HV1091'
 HV1091'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION SCHWIEN.
 HV1091'
 HV1091'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION WALDORF.
 HV1091'
 HV1091'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION GUTRIDGE.
 HV1091'
 HV1091'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION POMFRET 1934.
 HV1091'
 HV1091'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 HV1091
 HV1091                          STATION RECOVERY (1955)
 HV1091
 HV1091'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (SB)
 HV1091'THE STATION MARK AND REFERENCE MARKS 1 AND 2 WERE FOUND IN GOOD
 HV1091'CONDITION AS DESCRIBED.  NO EFFORT WAS MADE TO FIND REFERENCE
 HV1091'MARK 3 IN 1955.
 HV1091'
 HV1091'TO REACH THE STATION FROM WASHINGTON, D.C., TAKE INDIAN HEAD
 HV1091'HIGHWAY (NO. 210) SW TO THE CROSSROADS AT ACCOKEEK, TURN LEFT (E)
 HV1091'ON HIGHWAY 373 FOR ABOUT 1 MI. TO T-ROAD FORKS AND THE STATION.
 HV1091
 HV1091                          STATION RECOVERY (1957)
 HV1091
 HV1091'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV1091'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 HV1091'IN GOOD CONDITION, EXCEPT REFERENCE MARK 4 WHICH WAS
 HV1091'DESTROYED.  REFERENCE MARK 5 WAS ESTABLISHED.
 HV1091'
 HV1091'REFERENCE MARK 5 IS 55 FT. NW OF A HIGH LINE POLE, 48 FT. N OF
 HV1091'THE APPROXIMATE CENTERLINE OF A ROAD, AND 12.5 FT. SW OF A LONE
 HV1091'APPLE TREE.  THE MARK PROJECTS ABOUT 4 IN. AND THE DISK IS STAMPED
 HV1091'BEALLE NO 5 1957.
 HV1091'
 HV1091'A TRAVERSE CONNECTION WAS MADE FROM BEALLE 1934 TO BEALLE NO. 5.
 HV1091'
 HV1091'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 HV1091'
 HV1091'NOTE--REFERENCE MARK 5 WAS OCCUPIED AT THIS TIME BECAUSE OF THE
 HV1091'NEARNESS OF AN ELECTRIC POWERLINE TO BEALLE 1934.
 HV1091
 HV1091                          STATION RECOVERY (1966)
 HV1091
 HV1091'RECOVERY NOTE BY MD STATE ROADS COMM 1966
 HV1091'5 MI NW FROM WALDORF.
 HV1091'LOCATED ABOUT 5 MILES NORTHWEST (AIRLINE) FROM THE VILLAGE OF
 HV1091'WALDORF, ON PROPERTY OWNED BY A MR. BEALLE, LOCATED IN THE
 HV1091'NORTHEAST CORNER OF THE FRONT LAWN, 39.2 NORTHEAST OF THE
 HV1091'NORTHEAST CORNER OF THE PORCH, 46 FEET WEST-SOUTHWEST OF THE
 HV1091'CENTER OF A T ROAD JUNCTION, 55.6 FEET SOUTH OF POWER LINE POLE
 HV1091'27, 63.1 FEET WEST OF A LONE CEDAR TREE, SET IN THE TOP OF A
 HV1091'CONCRETE POST PROJECTING 6 INCHES.
 HV1091
 HV1091                          STATION RECOVERY (1970)
 HV1091
 HV1091'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV1091'STATION MARK, REFERENCE MARKS 2 AND 5 WERE RECOVERED AND FOUND
 HV1091'IN GOOD CONDITION.  THE AZIMUTH MARK WAS NOT RECOVERED AND A NEW
 HV1091'AZIMUTH MARK WAS ESTABLISHED AT THIS TIME.  THE DIRECTION BETWEEN
 HV1091'REFERENCE MARKS CHECKED.  THE TRAVERSE DISTANCE TO REFERENCE
 HV1091'MARK 5 CHECKED, BUT A LONGER DISTANCE OF 0.04 FEET OR .011
 HV1091'METERS WAS MEASURED TO REFERENCE MARK 2.  DUE TO CHANGES A
 HV1091'COMPLETE NEW DESCRIPTION FOLLOWS.
 HV1091'
 HV1091'STATION IS LOCATED ABOUT 15 MILES SOUTH OF THE CENTER OF THE
 HV1091'DISTRICT OF COLUMBIA, 8-1/2 MILES EAST-SOUTHEAST OF THE WILSON
 HV1091'MEMORIAL BRIDGE, 1 MILE NORTH OF THE PRINCE GEORGES-CHARLES
 HV1091'COUNTY LINE, 1/4 MILE EAST OF THE SMALL SETTLEMENT OF BEALLE
 HV1091'AND ON PROPERTY OF MELVIN F. KUSTER JR., ROUTE 2 BOX 101,
 HV1091'WALDORF, MARYLAND.  PHONE BU3-3467.
 HV1091'
 HV1091'TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY 495
 HV1091'AND STATE ROUTE 210 (INDIAN HEAD HIGHWAY) WHICH IS ABOUT 2 MILES
 HV1091'EAST OF THE SOUTHEAST CORNER OF ALEXANDRIA, VIRGINIA, GO SOUTH
 HV1091'ON STATE ROUTE 210 FOR 9.5 MILES TO A STOP LIGHT AT THE JUNCTION
 HV1091'OF STATE ROUTE 373 ON LEFT.  TURN LEFT AND GO EAST ON STATE
 HV1091'ROUTE 373 FOR 0.8 MILE TO A FORK AT BEALLE.  KEEP RIGHT AND GO
 HV1091'EAST ON STATE ROUTE 373 FOR 0.15 MILE TO A T ROAD JUNCTION
 HV1091'(BEALLE HILL ROAD) AND STATION ON RIGHT AS DESCRIBED.
 HV1091'
 HV1091'STATION MARK, A STANDARD DISK STAMPED BEALLE 1934, IS SET IN
 HV1091'A 12 BY 12 INCH SQUARE CONCRETE POST THAT PROJECTS ABOUT 3
 HV1091'INCHES.  IT IS 46 FEET SOUTHWEST OF THE JUNCTION OF STATE ROAD
 HV1091'373 AND BEALLE HILL ROAD, 44 FEET NORTHEAST OF THE NORTHEAST
 HV1091'CORNER OF HOUSE, 33 FEET WEST OF CENTER OF BEALLE HILL ROAD AND
 HV1091'14 FEET NORTH OF A TWIN TRUNK TREE.
 HV1091'
 HV1091'REFERENCE MARK 2, A STANDARD DISK STAMPED BEALLE NO. 2 1934,
 HV1091'IS SET IN THE TOP OF A 12 BY 12 INCH SQUARE CONCRETE POST THAT
 HV1091'PROJECTS ABOUT 1 INCH.  IT IS 53.5 FEET NORTHWEST OF THE NORTHWEST
 HV1091'CORNER OF HOUSE, 17 FEET SOUTH OF THE CENTER OF ROAD AND 2 FEET
 HV1091'SOUTH OF A MAIL BOX WITH NAME M.F. KUSTER ON IT.
 HV1091'
 HV1091'STATION BEALLE NO 5, A STANDARD REFERENCE DISK STAMPED BEALLE
 HV1091'NO 5 1957, IS SET IN THE TOP OF A 12 BY 12 INCH SQUARE CONCRETE
 HV1091'POST THAT PROJECTS ABOUT 2 INCHES.  IT IS 115 FEET NORTHWEST OF
 HV1091'THE CENTER OF JUNCTION OF STATE ROUTE 373 AND BEALLE HILL ROAD,
 HV1091'59 FEET NORTHEAST OF A POWER LINE POLE AND 49 FEET NORTH OF
 HV1091'CENTER OF STATE ROAD 373.
 HV1091'
 HV1091'AZIMUTH MARK, A STANDARD DISK STAMPED BEALLE 1934 1970, IS SET IN
 HV1091'TOP OF A 12-INCH ROUND CONCRETE POST THAT PROJECTS ABOUT 2
 HV1091'INCHES.  IT IS 59 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A
 HV1091'HOUSE THAT IS PAINTED WHITE, 24.5 FEET SOUTHWEST OF TELEPHONE
 HV1091'POLE NUMBER 3, 11 FEET WEST OF CENTER OF CEDAR LAWN DRIVE, 2.5
 HV1091'FEET SOUTH OF A METAL WITNESS POST AND 1 FOOT EAST OF THE FENCE.
 HV1091'
 HV1091'TO REACH THE AZ MK FROM THE JUNCTION OF STATE ROUTE 373 AND
 HV1091'BEALLE HILL ROAD AT THE STATION, GO NORTHERLY ON BEALLE HILL ROAD
 HV1091'AND STATE ROUTE 373 FOR 0.05 MILE TO WHERE STATE ROUTE 373 TURNS
 HV1091'RIGHT.  TURN RIGHT AND GO EASTERLY ON STATE ROUTE 373 FOR 0.05
 HV1091'MILE TO CEDAR LAWN DRIVE ON RIGHT.  TURN RIGHT AND GO SOUTHERLY
 HV1091'FOR 0.1 MILE TO A HOUSE ON LEFT AND MARK ON RIGHT AS DESCRIBED.
 HV1091'
 HV1091'HEIGHT OF LIGHT ABOVE STATION MARK 5 FEET.
 HV1091'
 HV1091'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV1091'1/4 MILE EAST OF BEALLE.
 HV1091
 HV1091                          STATION RECOVERY (1972)
 HV1091
 HV1091'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (RDO)
 HV1091'RECOVERED IN GOOD CONDITION AS DESCRIBED.
 HV1091
 HV1091                          STATION RECOVERY (1993)
 HV1091
 HV1091'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV1091'RECOVERED IN GOOD CONDITION.
 HV1091
 HV1091                          STATION RECOVERY (1999)
 HV1091
 HV1091'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (KO)
 HV1091'GOOD.
 HV1091
 HV1091                          STATION RECOVERY (2000)
 HV1091
 HV1091'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HV1091'OBSTRUCTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1092 ***********************************************************************
 HV1092  DESIGNATION -  BEALLE RM 2
 HV1092  PID         -  HV1092
 HV1092  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1092  COUNTRY     -  US
 HV1092  USGS QUAD   -  PISCATAWAY (2016)
 HV1092
 HV1092                         *CURRENT SURVEY CONTROL
 HV1092  ______________________________________________________________________
 HV1092* NAD 83(1986) POSITION- 38 40 08.40   (N) 076 59 36.64   (W)   HD_HELD1
 HV1092* NAVD 88 ORTHO HEIGHT -    61.640 (meters)      202.23  (feet) ADJUSTED
 HV1092  ______________________________________________________________________
 HV1092  GEOID HEIGHT    -        -32.583 (meters)                     GEOID18
 HV1092  DYNAMIC HEIGHT  -         61.605 (meters)      202.12  (feet) COMP
 HV1092  MODELED GRAVITY -    980,065.5   (mgal)                       NAVD 88
 HV1092
 HV1092  VERT ORDER      -  SECOND    CLASS 0
 HV1092
 HV1092.The horizontal coordinates were determined by differentially corrected
 HV1092.hand held GPS observations or other comparable positioning techniques
 HV1092.and have an estimated accuracy of +/- 3 meters.
 HV1092
 HV1092.The orthometric height was determined by differential leveling and
 HV1092.adjusted by the NATIONAL GEODETIC SURVEY
 HV1092.in June 1991.
 HV1092
 HV1092.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1092.GEOID18 height accuracy estimate available here.
 HV1092
 HV1092.Click photographs - Photos may exist for this station.
 HV1092
 HV1092.The dynamic height is computed by dividing the NAVD 88
 HV1092.geopotential number by the normal gravity value computed on the
 HV1092.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1092.degrees latitude (g = 980.6199 gals.).
 HV1092
 HV1092.The modeled gravity was interpolated from observed gravity values.
 HV1092
 HV1092;                    North         East    Units  Estimated Accuracy
 HV1092;SPC MD       -   111,262.9     400,564.7     MT  (+/- 3 meters HH1 GPS) 
 HV1092
 HV1092_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2656981931(NAD 83)
 HV1092
 HV1092                          SUPERSEDED SURVEY CONTROL
 HV1092
 HV1092  NGVD 29 (05/01/89)   61.877  (m)          203.01   (f) ADJUSTED    2 0
 HV1092  NGVD 29 (??/??/87)   61.926  (m)          203.17   (f) SUPERSEDED  2 0
 HV1092
 HV1092.Superseded values are not recommended for survey control.
 HV1092
 HV1092.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1092.See file dsdata.pdf to determine how the superseded data were derived.
 HV1092
 HV1092_MARKER: DR = REFERENCE MARK DISK
 HV1092_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1092_STAMPING: BEALLE NO 2 1934
 HV1092_MARK LOGO: CGS
 HV1092_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1092+STABILITY: SURFACE MOTION
 HV1092
 HV1092  HISTORY     - Date     Condition        Report By
 HV1092  HISTORY     - 1934     MONUMENTED       CGS
 HV1092  HISTORY     - 1966     GOOD             MDSRC
 HV1092
 HV1092                          STATION DESCRIPTION
 HV1092
 HV1092'DESCRIBED BY MD STATE ROADS COMM 1966
 HV1092'5 MI W FROM WALDORF.
 HV1092'LOCATED ON THE PROPERTY OF A MR. BEALLE, 96.9 FEET WEST-NORTHWEST
 HV1092'OF THE STATION MARK, AT THE WEST END OF A HEDGE ROW, 17.7 FEET
 HV1092'SOUTH OF THE CENTER LINE OF A MACADAM ROAD, 5 FEET EAST-SOUTHEAST
 HV1092'OF TELEPHONE POLE 336, SET IN THE TOP OF A CONCRETE POST
 HV1092'PROJECTING 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7435 ***********************************************************************
 HV7435  DESIGNATION -  BEALLE RM 5
 HV7435  PID         -  HV7435
 HV7435  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7435  COUNTRY     -  US
 HV7435  USGS QUAD   -  PISCATAWAY (2016)
 HV7435
 HV7435                         *CURRENT SURVEY CONTROL
 HV7435  ______________________________________________________________________
 HV7435* NAD 83(1993) POSITION- 38 40 08.98351(N) 076 59 36.16315(W)   ADJUSTED
 HV7435* NAVD 88 ORTHO HEIGHT -    61.98  (+/-2cm)      203.3   (feet) VERTCON3
 HV7435  ______________________________________________________________________
 HV7435  GEOID HEIGHT    -        -32.583 (meters)                     GEOID18
 HV7435  LAPLACE CORR    -         -3.87  (seconds)                    DEFLEC18
 HV7435  HORZ ORDER      -  FIRST
 HV7435  VERT ORDER      -  THIRD ? (See Below)
 HV7435
 HV7435.The horizontal coordinates were established by classical geodetic methods
 HV7435.and adjusted by the National Geodetic Survey in November 1994.
 HV7435
 HV7435.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7435.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7435
 HV7435.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7435.GEOID18 height accuracy estimate available here.
 HV7435
 HV7435.The vertical order pertains to the NGVD 29 superseded value.
 HV7435
 HV7435.Click photographs - Photos may exist for this station.
 HV7435
 HV7435.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7435
 HV7435. The following values were computed from the NAD 83(1993) position.
 HV7435
 HV7435;                    North         East     Units Scale Factor Converg.
 HV7435;SPC MD       -   111,280.924   400,576.220   MT  0.99995632   +0 00 15.0
 HV7435;SPC MD       -   365,094.16  1,314,223.82   sFT  0.99995632   +0 00 15.0
 HV7435;UTM  18      - 4,281,949.520   326,581.160   MT  0.99997036   -1 14 44.9
 HV7435
 HV7435!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7435!SPC MD       -   0.99999539  x   0.99995632  =   0.99995171
 HV7435!UTM  18      -   0.99999539  x   0.99997036  =   0.99996575
 HV7435
 HV7435:                Primary Azimuth Mark                     Grid Az
 HV7435:SPC MD       -  KENLON                                   237 07 03.2
 HV7435:UTM  18      -  KENLON                                   238 22 03.1
 HV7435
 HV7435_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2658181949(NAD 83)
 HV7435
 HV7435|---------------------------------------------------------------------|
 HV7435| PID    Reference Object                     Distance      Geod. Az  |
 HV7435|                                                           dddmmss.s |
 HV7435| CX2066 BEALLE AZ MK                                       1094202.7 |
 HV7435| HV7422 WALDORF ATT MICROWAVE               APPROX. 9.1 KM 1352625.6 |
 HV7435| HV1091 BEALLE                               32.888 METERS 15053     |
 HV7435| HV1092 BEALLE RM 2                          21.339 METERS 21243     |
 HV7435| HV4976 KENLON                              APPROX. 5.7 KM 2370718.2 |
 HV7435|---------------------------------------------------------------------|
 HV7435
 HV7435                          SUPERSEDED SURVEY CONTROL
 HV7435
 HV7435  NAD 83(1991)-  38 40 08.98194(N)    076 59 36.16408(W) AD(       ) 1
 HV7435  NAD 83(1986)-  38 40 08.98217(N)    076 59 36.17795(W) AD(       ) 1
 HV7435  NAD 27      -  38 40 08.56551(N)    076 59 37.26804(W) AD(       ) 1
 HV7435  NGVD 29              62.21   (m)          204.1    (f) LEVELING    3  
 HV7435
 HV7435.Superseded values are not recommended for survey control.
 HV7435
 HV7435.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7435.See file dsdata.pdf to determine how the superseded data were derived.
 HV7435
 HV7435_MARKER: DR = REFERENCE MARK DISK
 HV7435_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7435_STAMPING: BEALLE NO 5 1957
 HV7435_MARK LOGO: CGS
 HV7435_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7435+STABILITY: SURFACE MOTION
 HV7435
 HV7435  HISTORY     - Date     Condition        Report By
 HV7435  HISTORY     - 1957     MONUMENTED       CGS
 HV7435  HISTORY     - 1970     GOOD             NGS
 HV7435  HISTORY     - 1972     GOOD             NGS
 HV7435
 HV7435                          STATION DESCRIPTION
 HV7435
 HV7435'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV7435'THE STATION IS LOCATED ABOUT 5 MI. W OF WALDORF.  IT IS 55 FT. NW OF
 HV7435'A HIGH LINE POLE, 48 FT. N OF THE APPROXIMATE CENTER OF A ROAD, AND
 HV7435'12.5 FT. SW OF A LONE APPLE TREE.  THE MARK PROJECTS ABOUT 4 IN. AND
 HV7435'THE DISK IS STAMPED BEALLE NO 5 1957.
 HV7435'
 HV7435'BEALLE 1934 IS 44 FT. NE OF THE NE CORNER OF THE HOUSE, 32 FT. W OF
 HV7435'THE APPROXIMATE CENTERLINE OF A ROAD, 29 FT. S OF THE APPROXIMATE
 HV7435'CENTERLINE OF A ROAD, AND 7 FT. S OF A HEDGEROW.  THE MARK PROJECTS
 HV7435'ABOUT 6 IN. AND THE DISK IS STAMPED BEALLE 1934.
 HV7435'
 HV7435'REFERENCE MARK 2 IS 17 FT. S OF THE APPROXIMATE CENTERLINE OF A ROAD,
 HV7435'AND 6 FT. E OF A POWER POLE.  THE MARK PROJECTS ABOUT 2 IN. AND THE
 HV7435'DISK IS STAMPED BEALLE NO 2 1934.
 HV7435'
 HV7435'AZIMUTH MARK IS 54 FT. E OF A FENCE LINE, 15 FT. N OF THE S EDGE OF A
 HV7435'GARDEN, AND 10 FT. W OF AN 18-IN. CHERRY TREE.  THE MARK PROJECTS
 HV7435'ABOUT 4 IN. AND THE DISK IS STAMPED BEALLE 1934.
 HV7435'
 HV7435'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND STATE
 HV7435'HIGHWAY 228 IN WALDORF, GO W ON STATE HIGHWAY 228 FOR 5.5 MI. TO A
 HV7435'SIDE ROAD RIGHT, TURN RIGHT AND GO N FOR 1.2 MI. TO A SIDE ROAD
 HV7435'LEFT, TURN LEFT FOR APPROXIMATELY 100 FT. AND THE STATION ON THE
 HV7435'RIGHT AS DESCRIBED.
 HV7435'
 HV7435'HEIGHT OF TELESCOPE ABOVE STATION MARK - 27 METERS.
 HV7435
 HV7435                          STATION RECOVERY (1970)
 HV7435
 HV7435'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7435'STATION MARK, REFERENCE MARK 2 AND STATION BEALLE 1934 WERE
 HV7435'RECOVERED AND FOUND IN GOOD CONDITION.  THE AZ MK WAS NOT
 HV7435'RECOVERED AND A NEW AZ MK WAS ESTABLISHED AT THIS TIME.  THE
 HV7435'DIRECTION BETWEEN REFERENCE MARKS CHECKED.  THE TRAVERSE DISTANCE
 HV7435'TO BEALLE 1934 CHECKED WITH THE ORIGINAL DESCRIPTION.  DUE TO
 HV7435'CHANGES A COMPLETE NEW DESCRIPTION FOLLOWS.
 HV7435'
 HV7435'STATION IS LOCATED ABOUT 15 MILES SOUTH OF THE CENTER OF THE
 HV7435'DISTRICT OF COLUMBIA, 8-1/2 MILES EAST-SOUTHEAST OF THE WILSON
 HV7435'MEMORIAL BRIDGE, 1 MILE NORTH OF THE PRINCE GEORGES-CHARLES
 HV7435'COUNTY LINE, 1/4 MILE EAST OF THE SMALL SETTLEMENT OF BEALLE
 HV7435'AND ON PROPERTY OWNED BY PHILLIP C. GREENWELL, ROUTE 2, BOX
 HV7435'99, WALDORF, MARYLAND.
 HV7435'
 HV7435'TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY 495
 HV7435'(BELTWAY) AND STATE ROUTE 210 (INDIAN HEAD HIGHWAY) WHICH IS ABOUT
 HV7435'2 MILES EAST OF THE SOUTHEAST CORNER OF ALEXANDRIA, VIRGINIA, GO
 HV7435'SOUTH ON STATE ROUTE 210 FOR 9.5 MILES TO A STOP LIGHT AT
 HV7435'JUNCTION OF STATE ROUTE 373 ON LEFT.  TURN LEFT AND GO EAST ON
 HV7435'STATE ROUTE 373 FOR 0.8 MILE TO A FORK AT BEALLE.  KEEP RIGHT
 HV7435'AND CONTINUE EAST ON STATE ROUTE 373 FOR 0.15 MILE TO A T ROAD
 HV7435'JUNCTION (BEALLE HILL ROAD) AND THE STATION ON LEFT AS
 HV7435'DESCRIBED.
 HV7435'
 HV7435'STATION MARK, A STANDARD DISK STAMPED BEALLE NO 5 1957, IS
 HV7435'SET IN THE TOP OF A 12 BY 12 INCH SQUARE CONCRETE POST THAT
 HV7435'PROJECTS ABOUT 2 INCHES.  IT IS 115 FEET NORTHWEST OF THE CENTER
 HV7435'OF JUNCTION OF STATE ROUTE 373 AND BEALLE HILL ROAD, 59 FEET
 HV7435'NORTHWEST OF A POWER LINE POLE AND 49 FEET NORTH OF THE CENTER
 HV7435'OF STATE ROAD 373.
 HV7435'
 HV7435'REFERENCE MARK 2, A STANDARD DISK STAMPED BEALLE NO. 2 1934, IS
 HV7435'SET IN THE TOP OF A 12 BY 12 INCH SQUARE CONCRETE POST THAT
 HV7435'PROJECTS ABOUT 1 INCH.  IT IS 53.5 FEET NORTHWEST OF THE
 HV7435'NORTHWEST CORNER OF HOUSE, 17 FEET SOUTH OF THE CENTER OF THE
 HV7435'ROAD AND 2 FEET SOUTH OF A MAIL BOX WITH NAME M.F. KUSTER ON IT.
 HV7435'
 HV7435'STATION BEALLE, A STANDARD DISK STAMPED BEALLE 1934, IS SET
 HV7435'IN A 12 BY 12 INCH SQUARE CONCRETE POST THAT PROJECTS ABOUT 3
 HV7435'INCHES.  IT IS 46 FEET SOUTHWEST OF THE JUNCTION OF STATE ROAD
 HV7435'373 AND BEALLE HILL ROAD, 44 FEET NORTHEAST OF THE NORTHEAST
 HV7435'CORNER OF THE HOUSE, 33 FEET WEST OF CENTER OF BEALLE HILL ROAD
 HV7435'AND 14 FEET NORTH OF A TWIN TRUNK TREE.
 HV7435'
 HV7435'AZIMUTH MARK, A STANDARD DISK STAMPED BEALLE 1934 1970, IS SET
 HV7435'IN THE TOP OF A 12-INCH ROUND CONCRETE POST THAT PROJECTS ABOUT
 HV7435'2 INCHES.  IT IS 59 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A
 HV7435'HOUSE THAT IS PAINTED WHITE, 24.5 FEET SOUTHWEST OF TELEPHONE
 HV7435'POLE NUMBER 3, 11 FEET WEST OF CENTER OF CEDAR LAWN DRIVE, 2.5
 HV7435'FEET SOUTH OF A METAL WITNESS POST AND 1 FOOT EAST OF THE FENCE.
 HV7435'
 HV7435'TO REACH THE AZIMUTH MARK FROM THE JUNCTION OF STATE ROUTE 373
 HV7435'AND BEALLE HILL ROAD AT THE STATION, GO NORTHERLY ON BEALLE HILL
 HV7435'ROAD AND STATE ROUTE 373 FOR 0.05 MILE TO WHERE STATE ROUTE 373
 HV7435'TURNS RIGHT.  TURN RIGHT AND GO EASTERLY ON STATE ROUTE 373 FOR
 HV7435'0.05 MILE TO CEDAR LAWN DRIVE ON RIGHT.  TURN RIGHT AND GO
 HV7435'SOUTHERLY FOR 0.1 MILE TO A HOUSE ON LEFT AND MARK ON RIGHT AS
 HV7435'DESCRIBED.
 HV7435'
 HV7435'HEIGHT OF LIGHT ABOVE STATION MARK 100 FEET.
 HV7435'
 HV7435'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV7435'1/4 MILE EAST OF BEALLE.
 HV7435
 HV7435                          STATION RECOVERY (1972)
 HV7435
 HV7435'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (RDO)
 HV7435'STATION BEALLE RM5, BEALLE, AZIMUTH MARK, AND RM2 RECOVERED IN
 HV7435'GOOD CONDITION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3875 ***********************************************************************
 JU3875  DESIGNATION -  BEAN 1898
 JU3875  PID         -  JU3875
 JU3875  STATE/COUNTY-  MD/CECIL
 JU3875  COUNTRY     -  US
 JU3875  USGS QUAD   -  ELKTON (2016)
 JU3875
 JU3875                         *CURRENT SURVEY CONTROL
 JU3875  ______________________________________________________________________
 JU3875* NAD 83(1991) POSITION- 39 31 45.90637(N) 075 51 17.34511(W)   ADJUSTED
 JU3875* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3875  ______________________________________________________________________
 JU3875  GEOID HEIGHT    -        -33.303 (meters)                     GEOID18
 JU3875  LAPLACE CORR    -         -0.82  (seconds)                    DEFLEC18
 JU3875  HORZ ORDER      -  THIRD
 JU3875
 JU3875.The horizontal coordinates were established by classical geodetic methods
 JU3875.and adjusted by the National Geodetic Survey in January 1992.
 JU3875
 JU3875.The orthometric height was scaled from a topographic map.
 JU3875
 JU3875.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3875.GEOID18 height accuracy estimate available here.
 JU3875
 JU3875.Click photographs - Photos may exist for this station.
 JU3875
 JU3875.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3875
 JU3875. The following values were computed from the NAD 83(1991) position.
 JU3875
 JU3875;                    North         East     Units Scale Factor Converg.
 JU3875;SPC MD       -   207,398.712   498,458.355   MT  1.00001486   +0 43 07.5
 JU3875;SPC MD       -   680,440.61  1,635,358.79   sFT  1.00001486   +0 43 07.5
 JU3875;UTM  18      - 4,375,878.216   426,534.053   MT  0.99966645   -0 32 38.7
 JU3875
 JU3875!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3875!SPC MD       -   1.00000510  x   1.00001486  =   1.00001996
 JU3875!UTM  18      -   1.00000510  x   0.99966645  =   0.99967155
 JU3875
 JU3875:                Primary Azimuth Mark                     Grid Az
 JU3875:SPC MD       -  RAND 1898                                265 56 13.8
 JU3875:UTM  18      -  RAND 1898                                267 12 00.0
 JU3875
 JU3875_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2653475878(NAD 83)
 JU3875
 JU3875|---------------------------------------------------------------------|
 JU3875| PID    Reference Object                     Distance      Geod. Az  |
 JU3875|                                                           dddmmss.s |
 JU3875| JU3893 RAND 1898                           APPROX. 0.7 KM 2663921.3 |
 JU3875| JU3894 T W O 1898                          APPROX. 0.5 KM 3111835.0 |
 JU3875|---------------------------------------------------------------------|
 JU3875
 JU3875                          SUPERSEDED SURVEY CONTROL
 JU3875
 JU3875  NAD 83(1986)-  39 31 45.89773(N)    075 51 17.35035(W) AD(       ) 3
 JU3875  NAD 27      -  39 31 45.50100(N)    075 51 18.57300(W) AD(       ) 3
 JU3875  USSD        -  39 31 45.88300(N)    075 51 18.40100(W) AD(       ) 3
 JU3875
 JU3875.Superseded values are not recommended for survey control.
 JU3875
 JU3875.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3875.See file dsdata.pdf to determine how the superseded data were derived.
 JU3875
 JU3875_MARKER: N = NAIL
 JU3875_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3875_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3875+STABILITY: SURFACE MOTION
 JU3875
 JU3875  HISTORY     - Date     Condition        Report By
 JU3875  HISTORY     - 1898     MONUMENTED       CGS
 JU3875
 JU3875                          STATION DESCRIPTION
 JU3875
 JU3875'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (JBB)
 JU3875'ON S SIDE OF BACK CREEK, ABOUT 1/2 MILE E OF RANDALL WHARF, NEAR
 JU3875'HIGH-WATER MARK ON A SMALL POINT OF LAND.  MARKED BY A BOX 3 BY
 JU3875'3 INCHES AND 3 FEET DEEP, FILLED WITH CEMENT, A NAIL IN TOP
 JU3875'MARKING THE CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7470 ***********************************************************************
 HV7470  DESIGNATION -  BEANE
 HV7470  PID         -  HV7470
 HV7470  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7470  COUNTRY     -  US
 HV7470  USGS QUAD   -  LANHAM (2016)
 HV7470
 HV7470                         *CURRENT SURVEY CONTROL
 HV7470  ______________________________________________________________________
 HV7470* NAD 83(1993) POSITION- 38 54 01.53145(N) 076 49 52.98756(W)   ADJUSTED
 HV7470* NAVD 88 ORTHO HEIGHT -    70.1   (meters)      230.    (feet) VERTCON3
 HV7470  ______________________________________________________________________
 HV7470  GEOID HEIGHT    -        -32.522 (meters)                     GEOID18
 HV7470  LAPLACE CORR    -         -5.39  (seconds)                    DEFLEC18
 HV7470  HORZ ORDER      -  FIRST
 HV7470
 HV7470.The horizontal coordinates were established by classical geodetic methods
 HV7470.and adjusted by the National Geodetic Survey in November 1994.
 HV7470
 HV7470.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7470.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7470
 HV7470.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7470.GEOID18 height accuracy estimate available here.
 HV7470
 HV7470.Click photographs - Photos may exist for this station.
 HV7470
 HV7470.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7470
 HV7470. The following values were computed from the NAD 83(1993) position.
 HV7470
 HV7470;                    North         East     Units Scale Factor Converg.
 HV7470;SPC MD       -   136,966.032   414,626.184   MT  0.99994994   +0 06 21.0
 HV7470;SPC MD       -   449,362.72  1,360,319.41   sFT  0.99994994   +0 06 21.0
 HV7470;UTM  18      - 4,307,320.921   341,189.314   MT  0.99991057   -1 09 01.1
 HV7470
 HV7470!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7470!SPC MD       -   0.99999411  x   0.99994994  =   0.99994405
 HV7470!UTM  18      -   0.99999411  x   0.99991057  =   0.99990468
 HV7470
 HV7470:                Primary Azimuth Mark                     Grid Az
 HV7470:SPC MD       -  BEANE AZ MK                              337 01 16.8
 HV7470:UTM  18      -  BEANE AZ MK                              338 16 38.9
 HV7470
 HV7470_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4118907320(NAD 83)
 HV7470
 HV7470|---------------------------------------------------------------------|
 HV7470| PID    Reference Object                     Distance      Geod. Az  |
 HV7470|                                                           dddmmss.s |
 HV7470| HV7469 GLENN DALE DC SANITORIUM TANK       APPROX. 7.2 KM 0112900.5 |
 HV7470| CX2071 BEANE RM 1                          113.142 METERS 03238     |
 HV7470| CX2073 BEANE RM 5                           18.890 METERS 04122     |
 HV7470| CX2072 BEANE RM 4                           36.710 METERS 13227     |
 HV7470| HV7517 UPPER MARLBORO MUN TANK             APPROX.11.3 KM 1454352.7 |
 HV7470| HV7513 OAK GROVE PEPCO MICROWAVE           APPROX. 5.5 KM 1514432.7 |
 HV7470| HV1201 BEANE RM 2                                         1625443.8 |
 HV7470| HV1200 BEANE RM 3                          105.827 METERS 22522     |
 HV7470| HV8045 BEANE RM 3 RESET 1943                              22546     |
 HV7470| HV7611 SUITLAND TANK                       APPROX.10.0 KM 2345729.2 |
 HV7470| HV7617 SUITLAND US ARMY RELAY TOWER        APPROX.11.0 KM 2355103.9 |
 HV7470| HV7756 NEW YORK WASH AIRWAY BCN 57A        APPROX. 8.6 KM 3151052.0 |
 HV7470| CX2070 BEANE AZ MK                                        3370737.8 |
 HV7470|---------------------------------------------------------------------|
 HV7470
 HV7470                          SUPERSEDED SURVEY CONTROL
 HV7470
 HV7470  NAD 83(1991)-  38 54 01.53113(N)    076 49 52.98761(W) AD(       ) 1
 HV7470  NAD 83(1986)-  38 54 01.52924(N)    076 49 52.99961(W) AD(       ) 1
 HV7470  NAD 27      -  38 54 01.12763(N)    076 49 54.10343(W) AD(       ) 1
 HV7470  NGVD 29 (07/19/86)   70.3    (m)          231.     (f) VERT ANG       
 HV7470
 HV7470.Superseded values are not recommended for survey control.
 HV7470
 HV7470.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7470.See file dsdata.pdf to determine how the superseded data were derived.
 HV7470
 HV7470_MARKER: DS = TRIANGULATION STATION DISK
 HV7470_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7470_STAMPING: BEANE 1930
 HV7470_MARK LOGO: CGS
 HV7470_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7470+STABILITY: SURFACE MOTION
 HV7470
 HV7470  HISTORY     - Date     Condition        Report By
 HV7470  HISTORY     - 1933     MONUMENTED       CGS
 HV7470  HISTORY     - 1943     GOOD             CGS
 HV7470  HISTORY     - 1958     GOOD             CGS
 HV7470  HISTORY     - 1970     GOOD             NGS
 HV7470
 HV7470                          STATION DESCRIPTION
 HV7470
 HV7470'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 HV7470'THE STATION IS ON TOP OF NORTH AND SOUTH RIDGE OF A HILL ABOUT
 HV7470'0.15 MILE NE OF LARGO, WHERE CENTRAL AVENUE HIGHWAY AND THE
 HV7470'PAVED ROAD FROM UPPER MARLBORO TO LANDOVER CROSS.  IT IS 82 YARDS
 HV7470'EAST OF THE PAVED ROAD, AT BREAK IN THE SOUTH SLOPE OF THE RIDGE,
 HV7470'1 YARD S OF A FENCE LINE, ON PROPERTY OWNED BY LORD FAIRFAX, OF
 HV7470'LONDON, ENGLAND.  (PROPERTY ACROSS FENCE OWNED BY FRANK
 HV7470'H. BEANE.) THE STATION IS WSW OF BEANES BARN.  THE OBJECTS
 HV7470'LISTED ABOVE ARE ALL VISIBLE FROM THE GROUND AT THE STATION,
 HV7470'WITH THE EXCEPTION OF THE TWO TANKS AND THE BEACON.  THE
 HV7470'FORMER WILL REQUIRE VERY LITTLE CLEARING, AND THE LATTER IS
 HV7470'VISIBLE SIX FEET ABOVE THE GROUND.  THE CENTER PIPE OF THE
 HV7470'FIRST TANK WAS OBSERVED, AND THE BALL ON THE SECOND.  THE
 HV7470'LIGHTNING ROD IS ON THE WEST DORMER OF A LARGE RED ROOFED
 HV7470'HOUSE TO THE NORTH.
 HV7470'
 HV7470'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE BRONZE
 HV7470'DISKS SET IN CONCRETE.
 HV7470'
 HV7470'R.M. NO. 2 (AZIMUTH MARK) IS A STANDARD COPPER DISK REFERENCE
 HV7470'MARK SET IN, AND FLUSH WITH, THE TOP OF THE HEADWALL OF A CULVERT,
 HV7470'JUST SOUTH OF A CURVE IN THE UPPER MARLBORO ROAD, ABOUT 300 YARDS
 HV7470'SOUTH OF ROAD CROSSING, 34 YARDS SOUTH OF A CEDAR TREE ON EAST
 HV7470'SIDE OF ROAD, 4 YARDS WEST OF CENTERLINE OF ROAD, AND ABOUT
 HV7470'2-1/2 FT. FROM THE NORTH END OF THE HEADWALL.
 HV7470'
 HV7470'R.M. NO. 3 IS WSW OF STATION, IN STRIP OF LAND BETWEEN THE
 HV7470'ROAD AND A WIRE FENCE, ABOUT 50 YARDS NORTH OF GATE IN FENCE,
 HV7470'29 YARDS SOUTH OF NE FENCE CORNER, 25 YARDS SOUTH OF HIGHWAY
 HV7470'MARKER 62, 5 YARDS WEST OF CENTERLINE OF HIGHWAY, AND 2 YARDS
 HV7470'WEST OF A FOREST PRESERVATION SIGN.
 HV7470'
 HV7470'R.M. NO. 1 IS AT THE NORTHWEST CORNER OF A LARGE UNPAINTED BARN,
 HV7470'BELONGING TO MR. FRANK BEANE, AND IS 1 YARD WEST OF RANGE WITH
 HV7470'WEST SIDE OF BEANES HOUSE, ON NORTH SLOPE OF EAST AND WEST RIDGE.
 HV7470'
 HV7470'HEIGHT OF LIGHT ABOVE STATION MARK 33 METERS.
 HV7470
 HV7470                          STATION RECOVERY (1943)
 HV7470
 HV7470'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7470'THE STATION, REFERENCE MARKS NO. 1 AND NO. 2 WERE RECOVERED AND
 HV7470'FOUND IN GOOD CONDITION.  REFERENCE MARK NO. 3 WAS RESET ABOUT
 HV7470'6 FEET WEST OF THE ORIGINAL LOCATION.  A COMPLETE, NEW, DESCRIPTION
 HV7470'FOLLOWS--
 HV7470'
 HV7470'THE STATION IS LOCATED ON TOP OF A NORTH-SOUTH RIDGE, 0.15 MILE
 HV7470'NORTHEAST OF THE JUNCTION OF STATE HIGHWAYS 202 AND 214 IN
 HV7470'LARGO AND ON PROPERTY OWNED BY MRS. ROBERTS.  IT IS 1 FOOT SOUTH
 HV7470'OF A FENCE LINE BETWEEN THE BEANE AND ROBERTS PROPERTIES, 82
 HV7470'YARDS EAST OF THE CENTER OF HIGHWAY 202 AND 18 FEET EAST OF A
 HV7470'10 INCH LOCUST TREE.  IT IS STAMPED BEANE 1933 AND PROJECTS 10
 HV7470'INCHES.
 HV7470'
 HV7470'REFERENCE MARK NO. 1 IS EAST BY SOUTH OF THE STATION, ALONG
 HV7470'THE WEST SIDE OF BEANES BARN WHICH IS ON THE EAST SLOPE OF THE
 HV7470'RIDGE AND 21 FEET SOUTH OF THE NORTHWEST CORNER OF THE BARN.  IT
 HV7470'IS STAMPED BEANE NO. 1 1933 AND PROJECTS 1 FOOT.
 HV7470'
 HV7470'REFERENCE MARK NO. 2 (AZIMUTH MARK) IS 0.3 MILE SOUTHWEST OF
 HV7470'THE STATION SET FLUSH IN THE TOP OF A CONCRETE CULVERT.  IT IS
 HV7470'0.15 MILE SOUTH OF THE JUNCTION OF HIGHWAYS 202 AND 214 IN LARGO,
 HV7470'15 FEET WEST OF THE CENTER OF HIGHWAY 202 AND 58 FEET NORTH OF A
 HV7470'10 INCH LOCUST TREE.  IT IS STAMPED BEANE NO. 2 1933.
 HV7470'
 HV7470'REFERENCE MARK NO. 3 IS WEST BY NORTH OF THE STATION, IN A
 HV7470'HOUSE LAWN, 30 FEET WEST OF THE CENTER OF HIGHWAY 202 AND 6 FEET
 HV7470'NORTH OF A YOUNG MAPLE TREE.  IT IS STAMPED BEANE NO. 3 1933
 HV7470'RESET 1943 AND IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV7470'
 HV7470'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV7470'STATE HIGHWAY 202 IN UPPER MARLBORO GO NORTHWEST ON HIGHWAY 202
 HV7470'FOR 7.8 MILES TO TRAFFIC LIGHT AT JUNCTION WITH 214 IN LARGO,
 HV7470'CONTINUE STRAIGHT AHEAD ON HIGHWAY 202 FOR 0.15 MILE TO A GATE
 HV7470'ON THE RIGHT.  TURN RIGHT THROUGH GATE AND FOLLOW FIELD ROAD 0.1
 HV7470'MILE TO A LARGE BARN ON TOP OF RIDGE, TURN LEFT FOR 0.05 MILE TO
 HV7470'A FENCE LINE AND THE STATION AS DESCRIBED.
 HV7470'
 HV7470'A 87-FOOT LIGHT AT HILL 2 1942 IS VG.
 HV7470'
 HV7470'A 100-FOOT LIGHT AT MELLWOOD IS VG.
 HV7470'
 HV7470'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WYVILLE 1933.
 HV7470'
 HV7470'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WOOD 1934.
 HV7470'
 HV7470'A 123-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT HARRISON 1933 ECC.
 HV7470
 HV7470                          STATION RECOVERY (1958)
 HV7470
 HV7470'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7470'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 HV7470'TO BE IN GOOD CONDITION, WITH THE EXCEPTION OF REFERENCE MARK 3
 HV7470'WHICH IS BELIEVED TO HAVE BEEN DESTROYED.
 HV7470'
 HV7470'THE DIRECTIONS TO REFERENCE MARK 1 AND REFERENCE MARK 2 (AZIMUTH
 HV7470'MARK) WAS CHECKED AND FOUND CORRECT.
 HV7470'
 HV7470'REFERENCE MARK 4 WAS ESTABLISHED.  IT IS 103 FT. N-NW OF THE
 HV7470'N-NW CORNER OF A BARN.  THE MARK PROJECTS ABOUT 6 IN. AND THE
 HV7470'DISK IS STAMPED BEANE NO 4 1933.
 HV7470'
 HV7470'REFERENCE MARK 1 COULD NOT BE MEASURED TO BECAUSE OF A HOUSE
 HV7470'ON THE LINE.
 HV7470'
 HV7470'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 202
 HV7470'AND 214 IN LARGO (ABOUT 11 MI. E OF THE CENTER OF WASHINGTON), GO
 HV7470'N ON STATE HIGHWAY 202 FOR 0.15 MI. TO AN OPENING INTO THE FIELD
 HV7470'ON THE RIGHT.  TURN RIGHT INTO THE FIELD AND GO E FOR 0.05 MI. TO
 HV7470'A LARGE BARN.  TURN LEFT AND GO ABOUT 200 FT. TO A FENCE LINE
 HV7470'AND THE STATION SITE.
 HV7470
 HV7470                          STATION RECOVERY (1970)
 HV7470
 HV7470'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7470'THE STATION MARK AND REFERENCE MARK 4 WERE RECOVERED IN GOOD
 HV7470'CONDITION.  REFERENCE MARK 1 WAS RECOVERED IN POOR CONDITION AND
 HV7470'IS NOT VISIBLE FROM THE GROUND.  A NEW REFERENCE MARK (NUMBER 5)
 HV7470'AND A NEW AZIMUTH MARK WAS ESTABLISHED.  THE 1933 ROUTING TO THE
 HV7470'STATION IS NO LONGER ADEQUATE.  FOLLOWING IS A NEW COMPLETE
 HV7470'DESCRIPTION.
 HV7470'
 HV7470'THE STATION IS ABOUT 1-1/2 MILES SOUTHEAST OF THE JUNCTION OF
 HV7470'INTERSTATE HIGHWAY 495 AND STATE HIGHWAY 202, 1 MILE NORTHEAST
 HV7470'OF THE JUNCTION OF INTERSTATE HIGHWAY 495 AND STATE HIGHWAY 214
 HV7470'AND 1/4 MILE NORTH-NORTHWEST OF THE JUNCTION OF STATE HIGHWAYS
 HV7470'214 AND 202, NEAR THE SUMMIT OF A GRASS COVERED KNOLL, ON
 HV7470'PROPERTY OF THE NORTHAMPTON CORPORATION, ADDRESS 1812 K STREET
 HV7470'NW, WASHINGTON D. C.
 HV7470'
 HV7470'TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY 495
 HV7470'AND STATE HIGHWAY 202, GO SOUTHEAST AND SOUTH ON HIGHWAY 202 FOR
 HV7470'1.35 MILES TO A GRAVELED DRIVE AND THE AZIMUTH MARK ON THE
 HV7470'RIGHT.  CONTINUE SOUTH ON THE HIGHWAY FOR 0.45 MILE TO A GRAVELED
 HV7470'DRIVE ON THE LEFT.  TURN LEFT AND GO EAST ON DRIVE FOR 0.1 MILE
 HV7470'TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO SOUTH ON TRACK ROAD FOR
 HV7470'0.05 MILE TO AN OLD ABANDONED HOUSE.  BEAR RIGHT AND GO
 HV7470'SOUTHEAST, UPHILL FOR 0.05 MILE TO THE TOP OF THE KNOLL AND THE
 HV7470'STATION.
 HV7470'
 HV7470'STATION MARK IS A STANDARD DISK, STAMPED BEANE 1933, SET IN THE
 HV7470'TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 7 INCHES
 HV7470'ABOVE THE GROUND.  IT IS 4.5 FEET WEST OF A WITNESS POST.
 HV7470'
 HV7470'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED BEANE NO 1 1933,
 HV7470'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 2
 HV7470'FEET ABOVE THE GROUND.  IT IS 8.0 FEET EAST OF THE CENTERLINE OF
 HV7470'A TRACK ROAD AND 1.5 FEET WEST OF A BARN.  THE MARK WAS NOT
 HV7470'MEASURED TO FROM THE STATION DUE TO OBSTRUCTIONS.
 HV7470'
 HV7470'REFERENCE MARK 4 IS A STANDARD DISK, STAMPED BEANE NO 4 1933,
 HV7470'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS
 HV7470'4 INCHES ABOVE THE GROUND.  IT IS 117.0 FEET SOUTH OF THE WITNESS
 HV7470'POST AND ABOUT 6 FEET LOWER THAN THE STATION.
 HV7470'
 HV7470'REFERENCE MARK 5 IS A STANDARD DISK, STAMPED BEANE 1933 NO 5
 HV7470'1970, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 HV7470'DIAMETER, THAT PROJECTS 5 INCHES ABOVE THE GROUND.  IT IS 59.0
 HV7470'FEET EAST OF THE WITNESS POST AND ABOUT 4 FEET LOWER THAN THE
 HV7470'STATION.
 HV7470'
 HV7470'AZIMUTH MARK IS A STANDARD DISK, STAMPED BEANE 1933 1970, SET IN
 HV7470'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7470'PROJECTS 5 INCHES ABOVE THE GROUND.  IT IS 56.0 FEET WEST OF THE
 HV7470'CENTERLINE OF STATE HIGHWAY 202, 10.0 FEET SOUTH OF THE CENTERLINE
 HV7470'OF A GRAVELED DRIVE, 1.7 FEET WEST OF A WITNESS POST AND 1.3
 HV7470'FEET EAST OF A POWER LINE POLE.
 HV7470'
 HV7470'REFERENCE MARK 4 TO REFERENCE MARK 5 OBSTRUCTED.
 HV7470'
 HV7470'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV7470'1-3/4 MILES EAST-NORTHEAST OF RANDOLPH VILLAGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7110 ***********************************************************************
 HV7110  DESIGNATION -  BEAR
 HV7110  PID         -  HV7110
 HV7110  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7110  COUNTRY     -  US
 HV7110  USGS QUAD   -  SOUTH RIVER (2016)
 HV7110
 HV7110                         *CURRENT SURVEY CONTROL
 HV7110  ______________________________________________________________________
 HV7110* NAD 83(1991) POSITION- 38 57 48.18682(N) 076 35 36.37219(W)   ADJUSTED
 HV7110* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7110  ______________________________________________________________________
 HV7110  GEOID HEIGHT    -        -33.126 (meters)                     GEOID18
 HV7110  LAPLACE CORR    -         -5.23  (seconds)                    DEFLEC18
 HV7110  HORZ ORDER      -  THIRD
 HV7110
 HV7110.The horizontal coordinates were established by classical geodetic methods
 HV7110.and adjusted by the National Geodetic Survey in January 1992.
 HV7110
 HV7110.The orthometric height was scaled from a topographic map.
 HV7110
 HV7110.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7110.GEOID18 height accuracy estimate available here.
 HV7110
 HV7110.Click photographs - Photos may exist for this station.
 HV7110
 HV7110.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7110
 HV7110. The following values were computed from the NAD 83(1991) position.
 HV7110
 HV7110;                    North         East     Units Scale Factor Converg.
 HV7110;SPC MD       -   144,020.074   435,235.417   MT  0.99995101   +0 15 18.6
 HV7110;SPC MD       -   472,505.86  1,427,934.86   sFT  0.99995101   +0 15 18.6
 HV7110;UTM  18      - 4,313,920.729   361,946.671   MT  0.99983468   -1 00 07.7
 HV7110
 HV7110!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7110!SPC MD       -   1.00000524  x   0.99995101  =   0.99995625
 HV7110!UTM  18      -   1.00000524  x   0.99983468  =   0.99983991
 HV7110
 HV7110:                Primary Azimuth Mark                     Grid Az
 HV7110:SPC MD       -  PORTER                                   084 23 27.9
 HV7110:UTM  18      -  PORTER                                   085 38 54.2
 HV7110
 HV7110_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6194613920(NAD 83)
 HV7110
 HV7110|---------------------------------------------------------------------|
 HV7110| PID    Reference Object                     Distance      Geod. Az  |
 HV7110|                                                           dddmmss.s |
 HV7110| HV7139 PORTER                              APPROX. 0.6 KM 0843846.5 |
 HV7110| HV7138 GLEN                                453.168 METERS 1211339.9 |
 HV7110| HV7137 ISLE                                400.781 METERS 1720322.9 |
 HV7110| CX2074 BEAR RM                              16.183 METERS 34211     |
 HV7110|---------------------------------------------------------------------|
 HV7110
 HV7110                          SUPERSEDED SURVEY CONTROL
 HV7110
 HV7110  NAD 83(1986)-  38 57 48.18356(N)    076 35 36.38337(W) AD(       ) 3
 HV7110  NAD 27      -  38 57 47.78400(N)    076 35 37.51100(W) AD(       ) 3
 HV7110
 HV7110.Superseded values are not recommended for survey control.
 HV7110
 HV7110.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7110.See file dsdata.pdf to determine how the superseded data were derived.
 HV7110
 HV7110_MARKER: DS = TRIANGULATION STATION DISK
 HV7110_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7110
 HV7110  HISTORY     - Date     Condition        Report By
 HV7110  HISTORY     - 1933     MONUMENTED       CGS
 HV7110
 HV7110                          STATION DESCRIPTION
 HV7110
 HV7110'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7110'STATION IS ON THE NE SIDE OF SOUTH RIVER, ABOUT 1-1/4 MILE WEST OF
 HV7110'THE FERRY ROAD HIGHWAY BRIDGE.  ON THE MARSHY POINT OPPOSITE
 HV7110'BEARDS POINT, AND AT THE POINT WHERE THE RIVER MAKES A DECIDED
 HV7110'TURN TO THE NORTHWARD.  THE STATION IS ON THE NARROW MARSHY SPIT
 HV7110'AT THE BASE OF THE BLUFF AND 20 FEET FROM THE END OF THE SPIT.
 HV7110'
 HV7110'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7110'CONCRETE AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5673 ***********************************************************************
 JV5673  DESIGNATION -  BEAR
 JV5673  PID         -  JV5673
 JV5673  STATE/COUNTY-  MD/BALTIMORE
 JV5673  COUNTRY     -  US
 JV5673  USGS QUAD   -  CURTIS BAY (2016)
 JV5673
 JV5673                         *CURRENT SURVEY CONTROL
 JV5673  ______________________________________________________________________
 JV5673* NAD 83(1991) POSITION- 39 13 54.90559(N) 076 30 12.39508(W)   ADJUSTED
 JV5673* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5673  ______________________________________________________________________
 JV5673  GEOID HEIGHT    -        -33.002 (meters)                     GEOID18
 JV5673  LAPLACE CORR    -         -1.29  (seconds)                    DEFLEC18
 JV5673  HORZ ORDER      -  THIRD
 JV5673
 JV5673.The horizontal coordinates were established by classical geodetic methods
 JV5673.and adjusted by the National Geodetic Survey in January 1992.
 JV5673
 JV5673.The orthometric height was scaled from a topographic map.
 JV5673
 JV5673.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5673.GEOID18 height accuracy estimate available here.
 JV5673
 JV5673.Click photographs - Photos may exist for this station.
 JV5673
 JV5673.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5673
 JV5673. The following values were computed from the NAD 83(1991) position.
 JV5673
 JV5673;                    North         East     Units Scale Factor Converg.
 JV5673;SPC MD       -   173,868.788   442,872.629   MT  0.99996912   +0 18 42.0
 JV5673;SPC MD       -   570,434.52  1,452,991.28   sFT  0.99996912   +0 18 42.0
 JV5673;UTM  18      - 4,343,590.205   370,237.277   MT  0.99980733   -0 57 03.6
 JV5673
 JV5673!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5673!SPC MD       -   1.00000522  x   0.99996912  =   0.99997434
 JV5673!UTM  18      -   1.00000522  x   0.99980733  =   0.99981255
 JV5673
 JV5673:                Primary Azimuth Mark                     Grid Az
 JV5673:SPC MD       -  SPARROW ECC                              162 33 21.5
 JV5673:UTM  18      -  SPARROW ECC                              163 49 07.1
 JV5673
 JV5673_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7023743590(NAD 83)
 JV5673
 JV5673|---------------------------------------------------------------------|
 JV5673| PID    Reference Object                     Distance      Geod. Az  |
 JV5673|                                                           dddmmss.s |
 JV5673| JV5269 SPARROW ECC                         APPROX. 2.3 KM 1625203.5 |
 JV5673|---------------------------------------------------------------------|
 JV5673
 JV5673                          SUPERSEDED SURVEY CONTROL
 JV5673
 JV5673  NAD 83(1986)-  39 13 54.90161(N)    076 30 12.40380(W) AD(       ) 3
 JV5673  NAD 27      -  39 13 54.50400(N)    076 30 13.54300(W) AD(       ) 3
 JV5673  USSD        -  39 13 54.87000(N)    076 30 13.38000(W) AD(       ) 3
 JV5673
 JV5673.Superseded values are not recommended for survey control.
 JV5673
 JV5673.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5673.See file dsdata.pdf to determine how the superseded data were derived.
 JV5673
 JV5673_MARKER: DD = SURVEY DISK
 JV5673_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5673_MARK LOGO: USACE
 JV5673_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5673+STABILITY: SURFACE MOTION
 JV5673
 JV5673  HISTORY     - Date     Condition        Report By
 JV5673  HISTORY     - 1916     MONUMENTED       CGS
 JV5673  HISTORY     - 1924     GOOD             CGS
 JV5673  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5673  HISTORY     - 19950725 MARK NOT FOUND   USPSQD
 JV5673
 JV5673                          STATION DESCRIPTION
 JV5673
 JV5673'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5673'ON THE W SIDE OF BEAR CREEK, S OF THE TRACK OF THE BALTIMORE AND
 JV5673'SPARROWS POINT RAILROAD.  THE STATION IS MARKED BY A CONCRETE
 JV5673'MONUMENT CENTERED BY A STANDARD U.S.E. BRONZE MARKER.  DISTANCES
 JV5673'FROM THE STATION TO POINTS OF REFERENCE ARE AS FOLLOWS--A RAILROAD
 JV5673'RIGHT-OF-WAY GRANITE POST JUST N OF W, 16.51 METERS (54.16
 JV5673'FEET).  A SIMILAR GRANITE POST JUST E OF N, 17.15 METERS (56.25
 JV5673'FEET).  A TELEPHONE POST N OF W, 5.64 METERS (18.52 FEET).  A
 JV5673'SIGNPOST TO THE NW, 4.80 METERS (15.75 FEET).
 JV5673
 JV5673                          STATION RECOVERY (1961)
 JV5673
 JV5673'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5673'STATION NOT FOUND.  THE RAILROAD HAS BEEN TORN UP AND THE STATION
 JV5673'WAS PROBABLY LOST DURING THIS OPERATION.
 JV5673
 JV5673                          STATION RECOVERY (1995)
 JV5673
 JV5673'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5673'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4771 ***********************************************************************
 AB4771  DESIGNATION -  BEAR
 AB4771  PID         -  AB4771
 AB4771  STATE/COUNTY-  MD/CARROLL
 AB4771  COUNTRY     -  US
 AB4771  USGS QUAD   -  LITTLESTOWN (2019)
 AB4771
 AB4771                         *CURRENT SURVEY CONTROL
 AB4771  ______________________________________________________________________
 AB4771* NAD 83(2011) POSITION- 39 38 03.07814(N) 077 07 03.16180(W)   ADJUSTED
 AB4771* NAD 83(2011) ELLIP HT-   130.601 (meters)        (06/27/12)   ADJUSTED
 AB4771* NAD 83(2011) EPOCH   -  2010.00
 AB4771* NAVD 88 ORTHO HEIGHT -   163.339 (meters)      535.89  (feet) ADJUSTED
 AB4771  ______________________________________________________________________
 AB4771  GEOID HEIGHT    -        -32.726 (meters)                     GEOID18
 AB4771  NAD 83(2011) X  -  1,096,658.081 (meters)                     COMP
 AB4771  NAD 83(2011) Y  - -4,795,007.433 (meters)                     COMP
 AB4771  NAD 83(2011) Z  -  4,046,871.724 (meters)                     COMP
 AB4771  LAPLACE CORR    -          5.29  (seconds)                    DEFLEC18
 AB4771  DYNAMIC HEIGHT  -        163.253 (meters)      535.61  (feet) COMP
 AB4771  MODELED GRAVITY -    980,095.7   (mgal)                       NAVD 88
 AB4771
 AB4771  VERT ORDER      -  SECOND    CLASS II
 AB4771
 AB4771  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4771  Standards:
 AB4771         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4771            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4771  -------------------------------------------------------------------
 AB4771  NETWORK    1.09   2.69           0.48   0.41   1.37      0.01913106
 AB4771  -------------------------------------------------------------------
 AB4771  Click here for local accuracies and other accuracy information.
 AB4771
 AB4771.The horizontal coordinates were established by GPS observations
 AB4771.and adjusted by the National Geodetic Survey in June 2012.
 AB4771
 AB4771.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4771.been affixed to the stable North American tectonic plate. See 
 AB4771.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4771
 AB4771.The horizontal coordinates are valid at the epoch date displayed above
 AB4771.which is a decimal equivalence of Year/Month/Day.
 AB4771
 AB4771.The orthometric height was determined by differential leveling and
 AB4771.adjusted by the NATIONAL GEODETIC SURVEY
 AB4771.in June 2012.
 AB4771
 AB4771.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4771.GEOID18 height accuracy estimate available here.
 AB4771
 AB4771.Click photographs - Photos may exist for this station.
 AB4771
 AB4771.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4771
 AB4771.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4771
 AB4771.The ellipsoidal height was determined by GPS observations
 AB4771.and is referenced to NAD 83.
 AB4771
 AB4771.The dynamic height is computed by dividing the NAVD 88
 AB4771.geopotential number by the normal gravity value computed on the
 AB4771.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB4771.degrees latitude (g = 980.6199 gals.).
 AB4771
 AB4771.The modeled gravity was interpolated from observed gravity values.
 AB4771
 AB4771. The following values were computed from the NAD 83(2011) position.
 AB4771
 AB4771;                    North         East     Units Scale Factor Converg.
 AB4771;SPC MD       -   218,420.189   389,908.652   MT  1.00003741   -0 04 25.6
 AB4771;SPC MD       -   716,600.24  1,279,225.30   sFT  1.00003741   -0 04 25.6
 AB4771;UTM  18      - 4,389,299.570   318,278.374   MT  1.00000658   -1 21 04.0
 AB4771
 AB4771!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4771!SPC MD       -   0.99997951  x   1.00003741  =   1.00001692
 AB4771!UTM  18      -   0.99997951  x   1.00000658  =   0.99998609
 AB4771
 AB4771_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1827889299(NAD 83)
 AB4771
 AB4771|---------------------------------------------------------------------|
 AB4771| PID    Reference Object                     Distance      Geod. Az  |
 AB4771|                                                           dddmmss.s |
 AB4771| AB4760 BEAR AZ MK                          344.927 METERS 22132     |
 AB4771|---------------------------------------------------------------------|
 AB4771
 AB4771                          SUPERSEDED SURVEY CONTROL
 AB4771
 AB4771  NAD 83(2007)-  39 38 03.07849(N)    077 07 03.16238(W) AD(2002.00) 0
 AB4771  ELLIP H (02/10/07)  130.620  (m)                       GP(2002.00)    
 AB4771  ELLIP H (08/30/02)  130.616  (m)                       GP(       ) 4 2
 AB4771  NAD 83(1991)-  39 38 03.07767(N)    077 07 03.16312(W) AD(       ) 1
 AB4771  ELLIP H (07/03/96)  130.558  (m)                       GP(       ) 1 1
 AB4771  NAVD 88 (11/26/01)  163.3    (m)  GEOID99  model used  GPS OBS        
 AB4771  NAVD 88 (07/03/96)  163.3    (m)  GEOID93  model used  GPS OBS        
 AB4771
 AB4771.Superseded values are not recommended for survey control.
 AB4771
 AB4771.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4771.See file dsdata.pdf to determine how the superseded data were derived.
 AB4771
 AB4771_MARKER: DD = SURVEY DISK
 AB4771_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4771_STAMPING: BEAR 1995
 AB4771_MARK LOGO: MD-013
 AB4771_PROJECTION: FLUSH
 AB4771_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4771_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4771+STABILITY: SURFACE MOTION
 AB4771_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4771+SATELLITE: SATELLITE OBSERVATIONS - September 01, 2008
 AB4771
 AB4771  HISTORY     - Date     Condition        Report By
 AB4771  HISTORY     - 1995     MONUMENTED       MD-013
 AB4771  HISTORY     - 20080124 GOOD             MDSHA
 AB4771  HISTORY     - 20080901 GOOD             GEOCAC
 AB4771
 AB4771                          STATION DESCRIPTION
 AB4771
 AB4771'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4771'STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) NORTHWEST OF WESTMINSTER AND
 AB4771'ABOUT 3.5 MI (5.6 KM) SOUTHEAST OF TANEYTOWN. TO REACH STATION FROM
 AB4771'THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 832
 AB4771'(OLD TANEYTOWN ROAD) GO EAST ON MD ROUTE 832 FOR 2.5 MI (4.0 KM) TO
 AB4771'THE STATION ON THE RIGHT. STATION IS ALSO 0.5 MI (0.8 KM) WEST OF THE
 AB4771'INTERSECTION OF MD ROUTE 140 AND MAYBERRY ROAD. STATION MARK IS SET IN
 AB4771'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4771'GROUND. IT IS 41.0 FT (12.5 M) SOUTH OF THE CENTERLINE OF THE ROAD.
 AB4771
 AB4771                          STATION RECOVERY (2008)
 AB4771
 AB4771'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 AB4771'RECOVERED AS DESCRIBED.
 AB4771
 AB4771                          STATION RECOVERY (2008)
 AB4771
 AB4771'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 AB4771'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4865 ***********************************************************************
 JV4865  DESIGNATION -  BEAR 2
 JV4865  PID         -  JV4865
 JV4865  STATE/COUNTY-  MD/HARFORD
 JV4865  COUNTRY     -  US
 JV4865  USGS QUAD   -  SPESUTIE (2016)
 JV4865
 JV4865                         *CURRENT SURVEY CONTROL
 JV4865  ______________________________________________________________________
 JV4865* NAD 83(1991) POSITION- 39 26 09.77915(N) 076 04 53.39205(W)   ADJUSTED
 JV4865* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4865  ______________________________________________________________________
 JV4865  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 JV4865  LAPLACE CORR    -         -1.38  (seconds)                    DEFLEC18
 JV4865  HORZ ORDER      -  THIRD
 JV4865
 JV4865.The horizontal coordinates were established by classical geodetic methods
 JV4865.and adjusted by the National Geodetic Survey in January 1992.
 JV4865
 JV4865.The orthometric height was scaled from a topographic map.
 JV4865
 JV4865.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4865.GEOID18 height accuracy estimate available here.
 JV4865
 JV4865.Click photographs - Photos may exist for this station.
 JV4865
 JV4865.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4865
 JV4865. The following values were computed from the NAD 83(1991) position.
 JV4865
 JV4865;                    North         East     Units Scale Factor Converg.
 JV4865;SPC MD       -   196,812.657   479,074.340   MT  0.99999759   +0 34 35.3
 JV4865;SPC MD       -   645,709.53  1,571,763.06   sFT  0.99999759   +0 34 35.3
 JV4865;UTM  18      - 4,365,725.322   406,927.653   MT  0.99970665   -0 41 13.3
 JV4865
 JV4865!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4865!SPC MD       -   1.00000527  x   0.99999759  =   1.00000286
 JV4865!UTM  18      -   1.00000527  x   0.99970665  =   0.99971191
 JV4865
 JV4865:                Primary Azimuth Mark                     Grid Az
 JV4865:SPC MD       -  SANDY PT 2 1898                          053 52 54.9
 JV4865:UTM  18      -  SANDY PT 2 1898                          055 08 43.5
 JV4865
 JV4865_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0692765725(NAD 83)
 JV4865
 JV4865|---------------------------------------------------------------------|
 JV4865| PID    Reference Object                     Distance      Geod. Az  |
 JV4865|                                                           dddmmss.s |
 JV4865| JV4854 SANDY PT 2 1898                     APPROX. 2.2 KM 0542730.2 |
 JV4865|---------------------------------------------------------------------|
 JV4865
 JV4865                          SUPERSEDED SURVEY CONTROL
 JV4865
 JV4865  NAD 83(1986)-  39 26 09.77202(N)    076 04 53.39838(W) AD(       ) 3
 JV4865  NAD 27      -  39 26 09.37800(N)    076 04 54.57400(W) AD(       ) 3
 JV4865  USSD        -  39 26 09.75200(N)    076 04 54.41900(W) AD(       ) 3
 JV4865
 JV4865.Superseded values are not recommended for survey control.
 JV4865
 JV4865.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4865.See file dsdata.pdf to determine how the superseded data were derived.
 JV4865
 JV4865
 JV4865  HISTORY     - Date     Condition        Report By
 JV4865  HISTORY     - 1898     MONUMENTED       CGS
 JV4865
 JV4865                          STATION DESCRIPTION
 JV4865
 JV4865'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JV4865'NEAR UPPER END OF CHESAPEAKE BAY, ON SOUTHERN END OF SPESUTIE
 JV4865'ISLAND.  REPORTED LOST IN 1918.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4760 ***********************************************************************
 AB4760  DESIGNATION -  BEAR AZ MK
 AB4760  PID         -  AB4760
 AB4760  STATE/COUNTY-  MD/CARROLL
 AB4760  COUNTRY     -  US
 AB4760  USGS QUAD   -  LITTLESTOWN (2019)
 AB4760
 AB4760                         *CURRENT SURVEY CONTROL
 AB4760  ______________________________________________________________________
 AB4760* NAD 83(2011) POSITION- 39 37 54.70690(N) 077 07 12.75351(W)   ADJUSTED
 AB4760* NAD 83(2011) ELLIP HT-   128.645 (meters)        (06/27/12)   ADJUSTED
 AB4760* NAD 83(2011) EPOCH   -  2010.00
 AB4760* NAVD 88 ORTHO HEIGHT -   161.4   (meters)      530.    (feet) GPS OBS
 AB4760  ______________________________________________________________________
 AB4760  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4760  GEOID HEIGHT    -        -32.725 (meters)                     GEOID99
 AB4760  GEOID HEIGHT    -        -32.724 (meters)                     GEOID18
 AB4760  NAD 83(2011) X  -  1,096,471.476 (meters)                     COMP
 AB4760  NAD 83(2011) Y  - -4,795,217.499 (meters)                     COMP
 AB4760  NAD 83(2011) Z  -  4,046,671.638 (meters)                     COMP
 AB4760  LAPLACE CORR    -          5.25  (seconds)                    DEFLEC18
 AB4760
 AB4760  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4760  Standards:
 AB4760         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4760            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4760  -------------------------------------------------------------------
 AB4760  NETWORK    1.18   3.55           0.51   0.45   1.81     -0.03693732
 AB4760  -------------------------------------------------------------------
 AB4760  Click here for local accuracies and other accuracy information.
 AB4760
 AB4760.The horizontal coordinates were established by GPS observations
 AB4760.and adjusted by the National Geodetic Survey in June 2012.
 AB4760
 AB4760.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4760.been affixed to the stable North American tectonic plate. See 
 AB4760.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4760
 AB4760.The horizontal coordinates are valid at the epoch date displayed above
 AB4760.which is a decimal equivalence of Year/Month/Day.
 AB4760
 AB4760.The orthometric height was determined by GPS observations and a
 AB4760.high-resolution geoid model.
 AB4760
 AB4760.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4760.GEOID18 height accuracy estimate available here.
 AB4760
 AB4760.Click photographs - Photos may exist for this station.
 AB4760
 AB4760.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4760
 AB4760.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4760
 AB4760.The ellipsoidal height was determined by GPS observations
 AB4760.and is referenced to NAD 83.
 AB4760
 AB4760. The following values were computed from the NAD 83(2011) position.
 AB4760
 AB4760;                    North         East     Units Scale Factor Converg.
 AB4760;SPC MD       -   218,162.300   389,679.574   MT  1.00003688   -0 04 31.6
 AB4760;SPC MD       -   715,754.15  1,278,473.74   sFT  1.00003688   -0 04 31.6
 AB4760;UTM  18      - 4,389,046.859   318,043.611   MT  1.00000763   -1 21 09.9
 AB4760
 AB4760!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4760!SPC MD       -   0.99997982  x   1.00003688  =   1.00001670
 AB4760!UTM  18      -   0.99997982  x   1.00000763  =   0.99998745
 AB4760
 AB4760_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1804389046(NAD 83)
 AB4760
 AB4760|---------------------------------------------------------------------|
 AB4760| PID    Reference Object                     Distance      Geod. Az  |
 AB4760|                                                           dddmmss.s |
 AB4760| AB4771 BEAR                                344.927 METERS 04132     |
 AB4760|---------------------------------------------------------------------|
 AB4760
 AB4760                          SUPERSEDED SURVEY CONTROL
 AB4760
 AB4760  NAD 83(2007)-  39 37 54.70724(N)    077 07 12.75407(W) AD(2002.00) 0
 AB4760  ELLIP H (02/10/07)  128.663  (m)                       GP(2002.00)    
 AB4760  ELLIP H (08/30/02)  128.659  (m)                       GP(       ) 4 2
 AB4760  NAD 83(1991)-  39 37 54.70639(N)    077 07 12.75483(W) AD(       ) 1
 AB4760  ELLIP H (07/03/96)  128.605  (m)                       GP(       ) 1 1
 AB4760  NAVD 88 (07/03/96)  161.4    (m)  GEOID93  model used  GPS OBS        
 AB4760
 AB4760.Superseded values are not recommended for survey control.
 AB4760
 AB4760.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4760.See file dsdata.pdf to determine how the superseded data were derived.
 AB4760
 AB4760_MARKER: DD = SURVEY DISK
 AB4760_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4760_STAMPING: BEAR AZI 1995
 AB4760_MARK LOGO: MD-013
 AB4760_PROJECTION: FLUSH
 AB4760_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4760_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4760+STABILITY: SURFACE MOTION
 AB4760_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4760+SATELLITE: SATELLITE OBSERVATIONS - December 05, 2016
 AB4760
 AB4760  HISTORY     - Date     Condition        Report By
 AB4760  HISTORY     - 1995     MONUMENTED       MD-013
 AB4760  HISTORY     - 20080901 GOOD             GEOCAC
 AB4760  HISTORY     - 20161205 GOOD             BASE9
 AB4760
 AB4760                          STATION DESCRIPTION
 AB4760
 AB4760'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4760'STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) NORTHWEST OF WESTMINSTER AND
 AB4760'ABOUT 3.0 MI (4.8 KM) SOUTHWEST OF TANEYTOWN. TO REACH STATION FROM
 AB4760'THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 194
 AB4760'(FRANCIS SCOTT KEY HIGHWAY) IN TANEYTOWN, GO EAST ON MD ROUTE 140 FOR
 AB4760'1.5 MI (2.4 KM) TO THE INTERSECTION WITH MD ROUTE 832 (OLD TANEYTOWN
 AB4760'ROAD). CONTINUE STRAIGHT AHEAD ON MD ROUTE 832 FOR 2.2 MI (3.5 KM) TO
 AB4760'THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4760'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 27.0 FT
 AB4760'(8.2 M) NORTH OF THE CENTERLINE OF THE ROAD, 64.4 FT (19.6 M)
 AB4760'NORTHEAST OF TELEPHONE POLE NO.85, 51.9 FT (15.8 M) SOUTHEAST OF POWER
 AB4760'POLE NO. 150306, 66.0 FT (20.1 M) SOUTHEAST OF THE CENTERLINE OF A
 AB4760'DRIVEWAY LEADING NORTHEAST TO HOUSE NO.3460, 38.5 FT (11.7 M)
 AB4760'SOUTHEAST OF A 12 IN CRAB APPLE TREE AND 108.1 FT (32.9 M) NORTHWEST
 AB4760'OF POWER POLE NO.150304.
 AB4760
 AB4760                          STATION RECOVERY (2008)
 AB4760
 AB4760'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 AB4760'RECOVERED IN GOOD CONDITION.
 AB4760
 AB4760                          STATION RECOVERY (2016)
 AB4760
 AB4760'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 AB4760'STATION IS 9.3 FT (2.8 M) SOUTHWEST OF A FENCE LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7109 ***********************************************************************
 HV7109  DESIGNATION -  BEARD
 HV7109  PID         -  HV7109
 HV7109  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7109  COUNTRY     -  US
 HV7109  USGS QUAD   -  SOUTH RIVER (2016)
 HV7109
 HV7109                         *CURRENT SURVEY CONTROL
 HV7109  ______________________________________________________________________
 HV7109* NAD 83(1991) POSITION- 38 56 58.56388(N) 076 34 02.13044(W)   ADJUSTED
 HV7109* NAVD 88 ORTHO HEIGHT -     7.    (meters)       23.    (feet) SCALED
 HV7109  ______________________________________________________________________
 HV7109  GEOID HEIGHT    -        -33.219 (meters)                     GEOID18
 HV7109  LAPLACE CORR    -         -4.79  (seconds)                    DEFLEC18
 HV7109  HORZ ORDER      -  THIRD
 HV7109
 HV7109.The horizontal coordinates were established by classical geodetic methods
 HV7109.and adjusted by the National Geodetic Survey in January 1992.
 HV7109
 HV7109.The orthometric height was scaled from a topographic map.
 HV7109
 HV7109.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7109.GEOID18 height accuracy estimate available here.
 HV7109
 HV7109.Click photographs - Photos may exist for this station.
 HV7109
 HV7109.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7109
 HV7109. The following values were computed from the NAD 83(1991) position.
 HV7109
 HV7109;                    North         East     Units Scale Factor Converg.
 HV7109;SPC MD       -   142,500.353   437,511.432   MT  0.99995067   +0 16 17.8
 HV7109;SPC MD       -   467,519.91  1,435,402.09   sFT  0.99995067   +0 16 17.8
 HV7109;UTM  18      - 4,312,351.628   364,188.528   MT  0.99982712   -0 59 07.4
 HV7109
 HV7109!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7109!SPC MD       -   1.00000415  x   0.99995067  =   0.99995482
 HV7109!UTM  18      -   1.00000415  x   0.99982712  =   0.99983127
 HV7109
 HV7109:                Primary Azimuth Mark                     Grid Az
 HV7109:SPC MD       -  VIEW                                     315 45 50.4
 HV7109:UTM  18      -  VIEW                                     317 01 15.6
 HV7109
 HV7109_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6418812351(NAD 83)
 HV7109
 HV7109|---------------------------------------------------------------------|
 HV7109| PID    Reference Object                     Distance      Geod. Az  |
 HV7109|                                                           dddmmss.s |
 HV7109| CX2075 BEARD RM                             14.488 METERS 16826     |
 HV7109| HV7141 VIEW                                APPROX. 0.6 KM 3160208.2 |
 HV7109| HV7171 BOYD                                APPROX. 0.5 KM 3591524.7 |
 HV7109|---------------------------------------------------------------------|
 HV7109
 HV7109                          SUPERSEDED SURVEY CONTROL
 HV7109
 HV7109  NAD 83(1986)-  38 56 58.56052(N)    076 34 02.14149(W) AD(       ) 3
 HV7109  NAD 27      -  38 56 58.16200(N)    076 34 03.28000(W) AD(       ) 3
 HV7109
 HV7109.Superseded values are not recommended for survey control.
 HV7109
 HV7109.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7109.See file dsdata.pdf to determine how the superseded data were derived.
 HV7109
 HV7109_MARKER: DS = TRIANGULATION STATION DISK
 HV7109_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7109
 HV7109  HISTORY     - Date     Condition        Report By
 HV7109  HISTORY     - 1933     MONUMENTED       CGS
 HV7109  HISTORY     - 1960     GOOD             CGS
 HV7109
 HV7109                          STATION DESCRIPTION
 HV7109
 HV7109'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7109'ON THE S SHORE OF SOUTH RIVER ABOUT 400 YARDS E OF THE MOUTH OF
 HV7109'BEARDS CREEK ON TOP OF A 40-FOOT BLUFF AND ABOUT 15 METERS BACK
 HV7109'FROM THE EDGE OF THE BLUFF NEAR THE PROPERTY LINE BETWEEN A SUMMER
 HV7109'HOUSE ON THE E AND A VACANT LOT ON THE W.
 HV7109'
 HV7109'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7109'CONCRETE AS DESCRIBED.
 HV7109
 HV7109                          STATION RECOVERY (1960)
 HV7109
 HV7109'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7109'STATION AND R.M. RECOVERED.  DUE TO DEVELOPMENT OF AREA, A NEW
 HV7109'DESCRIPTION FOLLOWS.
 HV7109'
 HV7109'ON THE S SHORE OF SOUTH RIVER ABOUT 400 YDS E OF THE MOUTH OF
 HV7109'BEARDS CREEK ON TOP OF A 40 FT BLUFF.  THE STATION IS IN THE FENCE
 HV7109'LINE 40 FT NW OF BRICK CHIMNEY OF A WHITE FRAME HOUSE.  STATION IS
 HV7109'28.3 FT S OF STAIRS LEADING DOWN BLUFF TO DOCK.  THE STATION IS
 HV7109'31.7 FT SE OF A 3 FT OAK TREE ON THE EDGE OF THE BLUFF.  R.M. IS
 HV7109'47.60 FT S OF STATION AND 1 FT W OF FENCE LINE.
 HV7109'
 HV7109'STATION AND R.M. BOTH STAMPED BEARD 1933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6805 ***********************************************************************
 HV6805  DESIGNATION -  BEAU MSFC 1908
 HV6805  PID         -  HV6805
 HV6805  STATE/COUNTY-  MD/ST MARYS
 HV6805  COUNTRY     -  US
 HV6805  USGS QUAD   -  LEONARDTOWN (2016)
 HV6805
 HV6805                         *CURRENT SURVEY CONTROL
 HV6805  ______________________________________________________________________
 HV6805* NAD 83(1993) POSITION- 38 15 56.79715(N) 076 38 24.54523(W)   ADJUSTED
 HV6805* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6805  ______________________________________________________________________
 HV6805  GEOID HEIGHT    -        -33.907 (meters)                     GEOID18
 HV6805  LAPLACE CORR    -         -5.17  (seconds)                    DEFLEC18
 HV6805  HORZ ORDER      -  THIRD
 HV6805
 HV6805.The horizontal coordinates were established by classical geodetic methods
 HV6805.and adjusted by the National Geodetic Survey in November 1994.
 HV6805
 HV6805.The orthometric height was scaled from a topographic map.
 HV6805
 HV6805.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6805.GEOID18 height accuracy estimate available here.
 HV6805
 HV6805.Click photographs - Photos may exist for this station.
 HV6805
 HV6805.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6805
 HV6805. The following values were computed from the NAD 83(1993) position.
 HV6805
 HV6805;                    North         East     Units Scale Factor Converg.
 HV6805;SPC MD       -    66,566.095   431,492.086   MT  1.00000613   +0 13 33.1
 HV6805;SPC MD       -   218,392.26  1,415,653.62   sFT  1.00000613   +0 13 33.1
 HV6805;SPC VA N     - 2,068,148.503 3,662,747.274   MT  0.99996712   +1 09 38.8
 HV6805;SPC VA N     - 6,785,250.55 12,016,863.35   sFT  0.99996712   +1 09 38.8
 HV6805;UTM  18      - 4,236,576.266   356,515.729   MT  0.99985355   -1 00 57.4
 HV6805
 HV6805!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6805!SPC MD       -   1.00000537  x   1.00000613  =   1.00001150
 HV6805!SPC VA N     -   1.00000537  x   0.99996712  =   0.99997249
 HV6805!UTM  18      -   1.00000537  x   0.99985355  =   0.99985891
 HV6805
 HV6805:                Primary Azimuth Mark                     Grid Az
 HV6805:SPC MD       -  MOULDY MSFC 1908                         091 32 44.6
 HV6805:SPC VA N     -  MOULDY MSFC 1908                         090 36 38.9
 HV6805:UTM  18      -  MOULDY MSFC 1908                         092 47 15.1
 HV6805
 HV6805_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5651536576(NAD 83)
 HV6805
 HV6805|---------------------------------------------------------------------|
 HV6805| PID    Reference Object                     Distance      Geod. Az  |
 HV6805|                                                           dddmmss.s |
 HV6805| HV6806 MOULDY MSFC 1908                    APPROX. 0.5 KM 0914617.7 |
 HV6805| HV6812 BELLE MSFC 1908                     468.816 METERS 3231858.5 |
 HV6805|---------------------------------------------------------------------|
 HV6805
 HV6805                          SUPERSEDED SURVEY CONTROL
 HV6805
 HV6805  NAD 83(1991)-  38 15 56.79624(N)    076 38 24.54998(W) AD(       ) 3
 HV6805  NAD 83(1986)-  38 15 56.79703(N)    076 38 24.56171(W) AD(       ) 3
 HV6805  NAD 27      -  38 15 56.32200(N)    076 38 25.68100(W) AD(       ) 3
 HV6805  USSD        -  38 15 56.92700(N)    076 38 25.55900(W) AD(       ) 3
 HV6805
 HV6805.Superseded values are not recommended for survey control.
 HV6805
 HV6805.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6805.See file dsdata.pdf to determine how the superseded data were derived.
 HV6805
 HV6805_MARKER: H = DRILL HOLE
 HV6805_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6805_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6805+STABILITY: SURFACE MOTION
 HV6805
 HV6805  HISTORY     - Date     Condition        Report By
 HV6805  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6805  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6805
 HV6805                          STATION DESCRIPTION
 HV6805
 HV6805'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6805'STATION IS ON THE SOUTHEASTERN SHORE OF BRETONS BAY, ON FIRST
 HV6805'PROMINENT POINT NE OF LOVERS POINT, ABOUT 3/8 MILE W OF THE
 HV6805'ENTRANCE TO MOULDY CREEK, ABOUT 1 FOOT ABOVE HIGH WATER, 9 YARDS
 HV6805'S OF SHORE, 10 YARDS E OF SHORE, 10 YARDS NW OF A SMALL SHANTY,
 HV6805'AND 11 YARDS SSE OF EXTREME END OF POINT.
 HV6805'
 HV6805'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6805'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6805'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6805'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6805'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6805'AS FOLLOWS--CHIMNEY ON MIDDLE HOUSE, 1/2 MILE, S 30 DEG 14 MIN W.
 HV6805'CHIMNEY ON S END OF HOUSE AT WHARF, 1/2 MILE, S 49 DEG 7 MIN W.
 HV6805'CHIMNEY ON ADAMS HOUSE, 1/2 MILE, N 38 DEG 40 MIN W. CHIMNEY ON
 HV6805'MIDDLE OF HOUSE ON HILL, 3/4 MILE, N 21 DEG 6 MIN W. PEAK OF NEAR
 HV6805'GABLE OF DUKE HOUSE, 3/4 MILE, N 13 DEG 0 MIN E. NEAR PEAK OF
 HV6805'GABLE OF HOUSE, 1-7/8 MILES, N 34 DEG 23 MIN E.  LEFT CHIMNEY OF
 HV6805'HOUSE, 3/4 MILE, N 77 DEG 57 MIN E.  NEAR PEAK OF GABLE OF HOUSE,
 HV6805'5/8 MILE, N 87 DEG 42 MIN E.  NAIL IN BLAZE IN DOUBLE 10-INCH
 HV6805'CEDAR TREE, 5.24 METERS (17.19 FEET), S 74 DEG 8 MIN E.  NAIL IN
 HV6805'BLAZE IN 8-INCH CEDAR TREE, 6.20 METERS (20.34 FEET), S 46 DEG 25
 HV6805'MIN E.  LEFT CORNER OF SHANTY, 8.78 METERS (28.80 FEET), S 38 DEG
 HV6805'2 MIN E.  NAIL IN BLAZE IN 10-INCH CEDAR TREE, 5.04 METERS (16.54
 HV6805'FEET), S 15 DEG 39 MIN E. RIGHT CORNER OF SHANTY, 9.89 METERS
 HV6805'(32.45 FEET), S 4 DEG 22 MIN E.
 HV6805
 HV6805                          STATION RECOVERY (1958)
 HV6805
 HV6805'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6805'A NEW PIER HAS BEEN CONSTRUCTED ON THE STATION SITE AND IT IS
 HV6805'BELIEVED THAT THE STATION WAS EITHER BURIED OR DESTROYED DURING
 HV6805'CONSTRUCTION.  THE STATION SHOULD BE LISTED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6374 ***********************************************************************
 DG6374  DESIGNATION -  BEAVERDAM GUAGING STA
 DG6374  PID         -  DG6374
 DG6374  STATE/COUNTY-  MD/TALBOT
 DG6374  COUNTRY     -  US
 DG6374  USGS QUAD   -  FOWLING CREEK (2017)
 DG6374
 DG6374                         *CURRENT SURVEY CONTROL
 DG6374  ______________________________________________________________________
 DG6374* NAD 83(1986) POSITION- 38 48 41.38   (N) 075 58 15.47   (W)   HD_HELD1
 DG6374* NAVD 88 ORTHO HEIGHT -     1.255 (meters)        4.12  (feet) ADJUSTED
 DG6374  ______________________________________________________________________
 DG6374  GEOID HEIGHT    -        -34.769 (meters)                     GEOID18
 DG6374  DYNAMIC HEIGHT  -          1.254 (meters)        4.11  (feet) COMP
 DG6374  MODELED GRAVITY -    980,038.2   (mgal)                       NAVD 88
 DG6374
 DG6374  VERT ORDER      -  SECOND    CLASS I
 DG6374
 DG6374.The horizontal coordinates were determined by differentially corrected
 DG6374.hand held GPS observations or other comparable positioning techniques
 DG6374.and have an estimated accuracy of +/- 3 meters.
 DG6374
 DG6374.The orthometric height was determined by differential leveling and
 DG6374.adjusted by the NATIONAL GEODETIC SURVEY
 DG6374.in September 2004.
 DG6374
 DG6374.No vertical observational check was made to the station.
 DG6374
 DG6374.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6374.GEOID18 height accuracy estimate available here.
 DG6374
 DG6374.Click photographs - Photos may exist for this station.
 DG6374
 DG6374.The dynamic height is computed by dividing the NAVD 88
 DG6374.geopotential number by the normal gravity value computed on the
 DG6374.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6374.degrees latitude (g = 980.6199 gals.).
 DG6374
 DG6374.The modeled gravity was interpolated from observed gravity values.
 DG6374
 DG6374;                    North         East    Units  Estimated Accuracy
 DG6374;SPC MD       -   127,584.3     489,371.4     MT  (+/- 3 meters HH1 GPS) 
 DG6374
 DG6374_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1569996305(NAD 83)
 DG6374
 DG6374                          SUPERSEDED SURVEY CONTROL
 DG6374
 DG6374.No superseded survey control is available for this station.
 DG6374
 DG6374_MARKER: DR = REFERENCE MARK DISK
 DG6374_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DG6374_SP_SET: RETAINING WALL
 DG6374_MARK LOGO: USGS
 DG6374_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6374_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6374+STABILITY: SURFACE MOTION
 DG6374_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6374+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2011
 DG6374
 DG6374  HISTORY     - Date     Condition        Report By
 DG6374  HISTORY     - UNK      MONUMENTED       USGS
 DG6374  HISTORY     - 20010619 GOOD             MDSHA
 DG6374  HISTORY     - 20110220 GOOD             NGS
 DG6374
 DG6374                          STATION DESCRIPTION
 DG6374
 DG6374'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DG6374'THE MARK IS LOCATED ABOUT 4.6 MI (7.4 KM) SOUTH-SOUTHEAST OF CORDOVA,
 DG6374'4.2 MI (6.76 KM) NORTH OF TANYARD AND 1.0 MI (1.61 KM) WEST-SOUTHWEST
 DG6374'OF MATTHEWS.  TO REACH FROM THE INTERSECTION OF US 50 AND MD 328, GO
 DG6374'EAST ON MD 328 FOR 5.4 MI (8.69 KM) TO BEAVERDAM BRANCH AND THE MARK
 DG6374'ON THE LEFT.  IT IS 5.9 FT (1.8 M) SOUTHEAST FROM THE NORTHWEST CORNER
 DG6374'OF A CONCRETE BLOCK BUILDING, 77.0 FT (23.5 M) NORTH OF THE CENTERLINE
 DG6374'OF THE HIGHWAY, 57.6 FT (17.6 M) NORTH OF A GUARD RAIL, AND 1.5 FT
 DG6374'(0.5 M) FOR A GAUGING STICK.  IT IS A USGS DISK SET IN THE TOP OF A
 DG6374'CONCRETE RETAINING WALL.
 DG6374
 DG6374                          STATION RECOVERY (2011)
 DG6374
 DG6374'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 DG6374'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5934 ***********************************************************************
 HV5934  DESIGNATION -  BECKWITH MSFC 1910
 HV5934  PID         -  HV5934
 HV5934  STATE/COUNTY-  MD/DORCHESTER
 HV5934  COUNTRY     -  US
 HV5934  USGS QUAD   -  CHURCH CREEK (2016)
 HV5934
 HV5934                         *CURRENT SURVEY CONTROL
 HV5934  ______________________________________________________________________
 HV5934* NAD 83(1991) POSITION- 38 33 59.75987(N) 076 12 16.17902(W)   ADJUSTED
 HV5934* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5934  ______________________________________________________________________
 HV5934  GEOID HEIGHT    -        -34.770 (meters)                     GEOID18
 HV5934  LAPLACE CORR    -         -4.97  (seconds)                    DEFLEC18
 HV5934  HORZ ORDER      -  THIRD
 HV5934
 HV5934.The horizontal coordinates were established by classical geodetic methods
 HV5934.and adjusted by the National Geodetic Survey in January 1992.
 HV5934
 HV5934.The orthometric height was scaled from a topographic map.
 HV5934
 HV5934.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5934.GEOID18 height accuracy estimate available here.
 HV5934
 HV5934.Click photographs - Photos may exist for this station.
 HV5934
 HV5934.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5934
 HV5934. The following values were computed from the NAD 83(1991) position.
 HV5934
 HV5934;                    North         East     Units Scale Factor Converg.
 HV5934;SPC MD       -   100,198.187   469,326.878   MT  0.99996433   +0 29 57.4
 HV5934;SPC MD       -   328,733.55  1,539,783.27   sFT  0.99996433   +0 29 57.4
 HV5934;UTM  18      - 4,269,371.188   395,065.713   MT  0.99973560   -0 45 03.5
 HV5934
 HV5934!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5934!SPC MD       -   1.00000534  x   0.99996433  =   0.99996966
 HV5934!UTM  18      -   1.00000534  x   0.99973560  =   0.99974093
 HV5934
 HV5934:                Primary Azimuth Mark                     Grid Az
 HV5934:SPC MD       -  LEE                                      212 46 30.7
 HV5934:UTM  18      -  LEE                                      214 01 31.6
 HV5934
 HV5934_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9506569371(NAD 83)
 HV5934
 HV5934|---------------------------------------------------------------------|
 HV5934| PID    Reference Object                     Distance      Geod. Az  |
 HV5934|                                                           dddmmss.s |
 HV5934| HV5910 LEE                                 APPROX. 1.2 KM 2131628.1 |
 HV5934| HV5947 CHERRY IS WATER TANK FLAGSTAFF      APPROX. 0.8 KM 2334039.7 |
 HV5934|---------------------------------------------------------------------|
 HV5934
 HV5934                          SUPERSEDED SURVEY CONTROL
 HV5934
 HV5934  NAD 83(1986)-  38 33 59.75733(N)    076 12 16.19452(W) AD(       ) 3
 HV5934  NAD 27      -  38 33 59.35300(N)    076 12 17.38400(W) AD(       ) 3
 HV5934  USSD        -  38 33 59.74200(N)    076 12 17.16300(W) AD(       ) 3
 HV5934
 HV5934.Superseded values are not recommended for survey control.
 HV5934
 HV5934.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5934.See file dsdata.pdf to determine how the superseded data were derived.
 HV5934
 HV5934_MARKER: Z = SEE DESCRIPTION
 HV5934_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5934_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5934+STABILITY: SURFACE MOTION
 HV5934
 HV5934  HISTORY     - Date     Condition        Report By
 HV5934  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5934  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5934
 HV5934                          STATION DESCRIPTION
 HV5934
 HV5934'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5934'ON THE EASTERN SHORE OF BECKWITHS CREEK, ABOUT 1/4 MILE NE OF THE
 HV5934'NE END OF CHERRY ISLAND, NEAR EDGE OF CULTIVATED FIELD, ABOUT 2
 HV5934'FEET ABOVE HIGH WATER, 30 YARDS NE OF SHORE, 35 YARDS E OF SHORE,
 HV5934'35 YARDS SE OF SHORE, AND ABOUT 1/8 MILE S BY E OF SMALL 1
 HV5934'1/2-STORY HOUSE.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE
 HV5934'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV5934'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV5934'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5934'TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN
 HV5934'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV5934'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5934'ARE AS FOLLOWS--CHIMNEY OF SMALL HOUSE ON CHERRY ISLAND, 1/2 MILE,
 HV5934'S 58 DEG 18 MIN W.  NEAR PEAK OF BARN, 1-1/4 MILES, S 75 DEG 31
 HV5934'MIN W.  NAIL IN BLAZE IN 4-INCH LOCUST TREE, 20.32 METERS (66.7
 HV5934'FEET), N 33 DEG 10 MIN W.  NEAR PEAK OF BARN, 1/2 MILE, N 28 DEG
 HV5934'33 MIN W.  NAIL IN BLAZE IN 3-INCH LOCUST TREE, 19.46 METERS (63.8
 HV5934'FEET), N 23 DEG 30 MIN W.  NEAR PEAK OF BARN, 1/2 MILE, N 39 DEG
 HV5934'35 MIN E.  LEFT CHIMNEY OF HOUSE, 1/4 MILE, S 5 DEG 46 MIN E.
 HV5934
 HV5934                          STATION RECOVERY (1961)
 HV5934
 HV5934'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5934'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  THE PUBLISHED
 HV5934'DESCRIPTION IS INADEQUATE FOR PRESENT DAY RECOVERY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5805 ***********************************************************************
 HV5805  DESIGNATION -  BEE
 HV5805  PID         -  HV5805
 HV5805  STATE/COUNTY-  MD/QUEEN ANNES
 HV5805  COUNTRY     -  US
 HV5805  USGS QUAD   -  QUEENSTOWN (2016)
 HV5805
 HV5805                         *CURRENT SURVEY CONTROL
 HV5805  ______________________________________________________________________
 HV5805* NAD 83(1991) POSITION- 38 54 27.65590(N) 076 09 46.85977(W)   ADJUSTED
 HV5805* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5805  ______________________________________________________________________
 HV5805  GEOID HEIGHT    -        -34.143 (meters)                     GEOID18
 HV5805  LAPLACE CORR    -         -4.36  (seconds)                    DEFLEC18
 HV5805  HORZ ORDER      -  THIRD
 HV5805
 HV5805.The horizontal coordinates were established by classical geodetic methods
 HV5805.and adjusted by the National Geodetic Survey in January 1992.
 HV5805
 HV5805.The orthometric height was scaled from a topographic map.
 HV5805
 HV5805.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5805.GEOID18 height accuracy estimate available here.
 HV5805
 HV5805.Click photographs - Photos may exist for this station.
 HV5805
 HV5805.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5805
 HV5805. The following values were computed from the NAD 83(1991) position.
 HV5805
 HV5805;                    North         East     Units Scale Factor Converg.
 HV5805;SPC MD       -   138,090.882   472,594.339   MT  0.99995000   +0 31 31.1
 HV5805;SPC MD       -   453,053.17  1,550,503.26   sFT  0.99995000   +0 31 31.1
 HV5805;UTM  18      - 4,307,174.901   399,160.139   MT  0.99972521   -0 43 49.9
 HV5805
 HV5805!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5805!SPC MD       -   1.00000523  x   0.99995000  =   0.99995523
 HV5805!UTM  18      -   1.00000523  x   0.99972521  =   0.99973044
 HV5805
 HV5805_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9916007174(NAD 83)
 HV5805
 HV5805                          SUPERSEDED SURVEY CONTROL
 HV5805
 HV5805  NAD 83(1986)-  38 54 27.65123(N)    076 09 46.87278(W) AD(       ) 3
 HV5805  NAD 27      -  38 54 27.23000(N)    076 09 48.03900(W) AD(       ) 3
 HV5805  USSD        -  38 54 27.62700(N)    076 09 47.81300(W) AD(       ) 3
 HV5805
 HV5805.Superseded values are not recommended for survey control.
 HV5805
 HV5805.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5805.See file dsdata.pdf to determine how the superseded data were derived.
 HV5805
 HV5805_MARKER: Z = SEE DESCRIPTION
 HV5805_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5805_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5805+STABILITY: SURFACE MOTION
 HV5805
 HV5805  HISTORY     - Date     Condition        Report By
 HV5805  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5805  HISTORY     - 1940     GOOD             CGS
 HV5805  HISTORY     - 1961     SEE DESCRIPTION  CGS
 HV5805
 HV5805                          STATION DESCRIPTION
 HV5805
 HV5805'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5805'STATION IS ON THE NORTHERN SHORE OF WYE NARROWS, AT NORTHERN SIDE
 HV5805'OF WESTERN ENTRANCE TO WYE NARROWS, IN WOODS ABOUT 4 FEET ABOVE
 HV5805'HIGH WATER, 7 YARDS E OF EDGE OF BANK, 11 YARDS NW OF EDGE OF
 HV5805'BANK, AND 13 YARDS N OF POINT OF BANK NEAR MARSH.  STATION IS
 HV5805'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5805'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5805'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV5805'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUBSURFACE MARK IS
 HV5805'CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW
 HV5805'THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV5805'POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT CORNER OF BRYAN HOUSE,
 HV5805'1-1/8 MILES, S 32 DEG 59 MIN W.  NEAR PEAK OF HOUSE, 7/8 MILE, S
 HV5805'70 DEG 45 MIN W.  NAIL IN BLAZE IN 4-INCH OAK TREE, 2.10 METERS
 HV5805'(6.89 FEET), N 24 DEG 43 MIN E.  NAIL IN BLAZE IN 24-INCH OAK
 HV5805'TREE, 8.64 METERS (28.35 FEET), S 43 DEG 11 MIN E. NAIL IN BLAZE
 HV5805'IN 8-INCH OAK TREE, 1.86 METERS (6.10 FEET), S 11 DEG 25 MIN E.
 HV5805
 HV5805                          STATION RECOVERY (1940)
 HV5805
 HV5805'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5805'STATION MARK RECOVERED IN FAIR CONDITION.  TOP CHIPPED BUT
 HV5805'MONUMENT APPARENTLY UNMOVED.
 HV5805'
 HV5805'ON THE NORTHERN SHORE OF WYE NARROWS, AT NORTHERN SIDE OF WESTERN
 HV5805'ENTRANCE TO WYE NARROWS, AT EDGE OF WOODS, ABOUT 3 FEET ABOVE HIGH
 HV5805'WATER AT EDGE OF BANK.  REFERENCE MONUMENT SHOULD BE INSTALLED AS
 HV5805'THE EXISTING MONUMENT WILL WASH OUT VERY SHORTLY.
 HV5805
 HV5805                          STATION RECOVERY (1961)
 HV5805
 HV5805'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5805'STATION DESTROYED.  THE MONUMENT WAS FOUND IN THE WATER 10 FT.
 HV5805'OFFSHORE OF THE M.H.W.L.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2583 ***********************************************************************
 HU2583  DESIGNATION -  BEECH AZ MK 2
 HU2583  PID         -  HU2583
 HU2583  STATE/COUNTY-  MD/WORCESTER
 HU2583  COUNTRY     -  US
 HU2583  USGS QUAD   -  WHALEYVILLE (2016)
 HU2583
 HU2583                         *CURRENT SURVEY CONTROL
 HU2583  ______________________________________________________________________
 HU2583* NAD 83(1991) POSITION- 38 22 51.51310(N) 075 17 42.13501(W)   NO CHECK
 HU2583* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 HU2583  ______________________________________________________________________
 HU2583  GEOID HEIGHT    -        -35.936 (meters)                     GEOID18
 HU2583  LAPLACE CORR    -         -0.34  (seconds)                    DEFLEC18
 HU2583  HORZ ORDER      -  SECOND
 HU2583
 HU2583.The horizontal coordinates were established by classical geodetic methods
 HU2583.and adjusted by the National Geodetic Survey in January 1992.
 HU2583
 HU2583.No horizontal observational check was made to the station.
 HU2583
 HU2583.The orthometric height was scaled from a topographic map.
 HU2583
 HU2583.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2583.GEOID18 height accuracy estimate available here.
 HU2583
 HU2583.Click photographs - Photos may exist for this station.
 HU2583
 HU2583.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2583
 HU2583. The following values were computed from the NAD 83(1991) position.
 HU2583
 HU2583;                    North         East     Units Scale Factor Converg.
 HU2583;SPC MD       -    80,682.451   548,962.411   MT  0.99998690   +1 04 12.3
 HU2583;SPC MD       -   264,705.67  1,801,054.18   sFT  0.99998690   +1 04 12.3
 HU2583;UTM  18      - 4,248,127.652   474,231.050   MT  0.99960818   -0 10 59.5
 HU2583
 HU2583!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2583!SPC MD       -   1.00000377  x   0.99998690  =   0.99999067
 HU2583!UTM  18      -   1.00000377  x   0.99960818  =   0.99961195
 HU2583
 HU2583_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7423148127(NAD 83)
 HU2583
 HU2583                          SUPERSEDED SURVEY CONTROL
 HU2583
 HU2583  NAD 83(1986)-  38 22 51.49917(N)    075 17 42.16112(W) AD(       ) 2
 HU2583
 HU2583.Superseded values are not recommended for survey control.
 HU2583
 HU2583.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2583.See file dsdata.pdf to determine how the superseded data were derived.
 HU2583
 HU2583_MARKER: DZ = AZIMUTH MARK DISK
 HU2583_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2583_STAMPING: BEECH 1955 NO 2 1984
 HU2583_MARK LOGO: NGS
 HU2583_PROJECTION: RECESSED 8 CENTIMETERS
 HU2583_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2583_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2583+STABILITY: SURFACE MOTION
 HU2583_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2583+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2016
 HU2583
 HU2583  HISTORY     - Date     Condition        Report By
 HU2583  HISTORY     - 1984     MONUMENTED       NGS
 HU2583  HISTORY     - 20040922 GOOD             GEOCAC
 HU2583  HISTORY     - 20051220 GOOD             USPSQD
 HU2583  HISTORY     - 20140507 GOOD             ARCSHE
 HU2583  HISTORY     - 20160220 GOOD             ARCSHE
 HU2583
 HU2583                          STATION DESCRIPTION
 HU2583
 HU2583'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2583'THE MARK IS LOCATED ABOUT 8 KM (4.95 MI) NORTHWEST OF BERLIN, 3.5 KM
 HU2583'(2.15 MI) EAST-SOUTHEAST OF WILLARDS, 2 KM (1.25 MI) SOUTH OF
 HU2583'WHALEYSVILLE AND IN THE MEDIAN STRIP OF U.S. HIGHWAY 50.
 HU2583'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2583'TO REACH FROM THE POST OFFICE AT WILLARDS, GO SOUTH ON STATE HIGHWAY
 HU2583'354, MAIN STREET, FOR 1.05 KM (0.65 MI) TO A CROSSROADS.  TURN LEFT
 HU2583'AND GO EAST ON U.S. HIGHWAY 50 FOR 4.9 KM (3.05 MI) TO THE MARK ON THE
 HU2583'LEFT, JUST EAST OF A CROSSROADS.
 HU2583'THE MARK IS SET IN THE TOP OF A 12-INCH ROUND CONCRETE POST RECESSED
 HU2583'0.02 M (0.1 FT) BELOW THE GROUND.  IT IS 12.8 M (42.0 FT) SOUTH OF THE
 HU2583'CENTER OF THE WEST BOUND LANE OF U.S. HIGHWAY 50, 26.9 M (88.3 FT)
 HU2583'NORTH OF THE CENTER OF THE EAST BOUND LANE OF U.S. HIGHWAY 50, 84.5 M
 HU2583'(277.2 FT) EAST OF THE CENTER OF HALL ROAD AND 3.4 M (11.2 FT) NORTH
 HU2583'OF A CARSONITE WITNESS POST.
 HU2583
 HU2583                          STATION RECOVERY (2004)
 HU2583
 HU2583'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2583'FOUND AS DESCRIBED BUT THREE INCHES BELOW THE SURFACE, AND WITHOUT A
 HU2583'WITNESS POST IN THE VICINITY.
 HU2583
 HU2583                          STATION RECOVERY (2005)
 HU2583
 HU2583'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU2583'RECOVERED IN GOOD CONDITION.
 HU2583
 HU2583                          STATION RECOVERY (2014)
 HU2583
 HU2583'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HU2583'RECOVERED IN GOOD CONDITION.
 HU2583
 HU2583                          STATION RECOVERY (2016)
 HU2583
 HU2583'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MAS)
 HU2583'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2582 ***********************************************************************
 HU2582  DESIGNATION -  BEECH RESET
 HU2582  PID         -  HU2582
 HU2582  STATE/COUNTY-  MD/WORCESTER
 HU2582  COUNTRY     -  US
 HU2582  USGS QUAD   -  WHALEYVILLE (2016)
 HU2582
 HU2582                         *CURRENT SURVEY CONTROL
 HU2582  ______________________________________________________________________
 HU2582* NAD 83(1991) POSITION- 38 22 41.82109(N) 075 17 51.21305(W)   ADJUSTED
 HU2582* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 HU2582  ______________________________________________________________________
 HU2582  GEOID HEIGHT    -        -35.939 (meters)                     GEOID18
 HU2582  LAPLACE CORR    -         -0.34  (seconds)                    DEFLEC18
 HU2582  HORZ ORDER      -  SECOND
 HU2582
 HU2582.The horizontal coordinates were established by classical geodetic methods
 HU2582.and adjusted by the National Geodetic Survey in January 1992.
 HU2582
 HU2582.The orthometric height was scaled from a topographic map.
 HU2582
 HU2582.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2582.GEOID18 height accuracy estimate available here.
 HU2582
 HU2582.Click photographs - Photos may exist for this station.
 HU2582
 HU2582.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2582
 HU2582. The following values were computed from the NAD 83(1991) position.
 HU2582
 HU2582;                    North         East     Units Scale Factor Converg.
 HU2582;SPC MD       -    80,379.549   548,747.690   MT  0.99998730   +1 04 06.6
 HU2582;SPC MD       -   263,711.90  1,800,349.71   sFT  0.99998730   +1 04 06.6
 HU2582;UTM  18      - 4,247,829.631   474,009.840   MT  0.99960832   -0 11 05.1
 HU2582
 HU2582!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2582!SPC MD       -   1.00000427  x   0.99998730  =   0.99999157
 HU2582!UTM  18      -   1.00000427  x   0.99960832  =   0.99961258
 HU2582
 HU2582:                Primary Azimuth Mark                     Grid Az
 HU2582:SPC MD       -  BEECH AZ MK                              020 18 08.5
 HU2582:UTM  18      -  BEECH AZ MK                              021 33 20.2
 HU2582
 HU2582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7400947829(NAD 83)
 HU2582
 HU2582|---------------------------------------------------------------------|
 HU2582| PID    Reference Object                     Distance      Geod. Az  |
 HU2582|                                                           dddmmss.s |
 HU2582| DC7821 BEECH AZ MK                                        0212215.1 |
 HU2582| HU2583 BEECH AZ MK 2                       371.293 METERS 03624     |
 HU2582| DC7822 BEECH RM 1                           28.505 METERS 23403     |
 HU2582| HU2609 BEECH RM 3                           29.202 METERS 25825     |
 HU2582| HU2610 BEECH RM 4                           30.022 METERS 33945     |
 HU2582| DC7823 BEECH RM 2                           26.731 METERS 34959     |
 HU2582|---------------------------------------------------------------------|
 HU2582
 HU2582                          SUPERSEDED SURVEY CONTROL
 HU2582
 HU2582  NAD 83(1986)-  38 22 41.80713(N)    075 17 51.23915(W) AD(       ) 2
 HU2582  NAD 27      -  38 22 41.39200(N)    075 17 52.54700(W) AD(       ) 2
 HU2582
 HU2582.Superseded values are not recommended for survey control.
 HU2582
 HU2582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2582.See file dsdata.pdf to determine how the superseded data were derived.
 HU2582
 HU2582_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2582_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2582_STAMPING: BEECH 1955 1984
 HU2582_MARK LOGO: NGS
 HU2582_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2582_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2582+STABILITY: SURFACE MOTION
 HU2582_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2582+SATELLITE: SATELLITE OBSERVATIONS - 1984
 HU2582
 HU2582  HISTORY     - Date     Condition        Report By
 HU2582  HISTORY     - 1984     MONUMENTED       NGS
 HU2582
 HU2582                          STATION DESCRIPTION
 HU2582
 HU2582'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2582'THE STATION IS LOCATED 8.0 KM (4.95 MI) NORTHWEST OF BERLIN, 3.5 KM
 HU2582'(2.15 MI) EAST-SOUTHEAST OF WILLARDS, AND 2 KM (1.25 MI) SOUTH OF
 HU2582'WHALEYSVILLE.  OWNERSHIP--BEN F. JACKSON, ROUTE 1, BOX 257, BERLIN,
 HU2582'MARYLAND 21811.
 HU2582'TO REACH THE STATION FROM THE POST OFFICE IN WILLARDS, GO SOUTH ON
 HU2582'STATE HIGHWAY 354, MAIN STREET, FOR 1.05 KM (0.65 MI) TO A CROSSROADS.
 HU2582'TURN LEFT AND GO EAST ON U.S. HIGHWAY 50 FOR 4.9 KM (3.05 MI) TO A
 HU2582'CROSSROADS.  TURN RIGHT AND GO SOUTH ON A GRAVELED ROAD FOR 0.15 KM
 HU2582'(0.10 MI) TO A FORK.  BEAR LEFT AND GO SOUTH ON A FARM ROAD PASSING TO
 HU2582'THE EAST OF A ONE STORY HOUSE FOR 0.15 KM (0.10 MI) TO THE STATION ON
 HU2582'THE LEFT IN THE NORTHWEST EDGE OF A WOODED AREA.
 HU2582'THE MARK IS SET IN THE TOP OF A 12-INCH ROUND CONCRETE POST FLUSH WITH
 HU2582'THE GROUND.  IT IS 13.7 M (44.9 FT) SOUTHEAST OF THE CENTER OF THE
 HU2582'FARM ROAD, 12.3 M (40.4 FT) SOUTHWEST OF THE SOUTH EDGE OF A
 HU2582'CULTIVATED FIELD, 21.2 M (69.6 FT) EAST-SOUTHEAST OF A 14-INCH
 HU2582'TRIANGULAR BLAZED OAK TREE AND 0.7 M (2.3 FT) NORTHEAST OF A CARSONITE
 HU2582'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7108 ***********************************************************************
 HV7108  DESIGNATION -  BEER
 HV7108  PID         -  HV7108
 HV7108  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7108  COUNTRY     -  US
 HV7108  USGS QUAD   -  SOUTH RIVER (2016)
 HV7108
 HV7108                         *CURRENT SURVEY CONTROL
 HV7108  ______________________________________________________________________
 HV7108* NAD 83(1991) POSITION- 38 53 13.52651(N) 076 31 10.93933(W)   ADJUSTED
 HV7108* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7108  ______________________________________________________________________
 HV7108  GEOID HEIGHT    -        -33.430 (meters)                     GEOID18
 HV7108  LAPLACE CORR    -         -3.77  (seconds)                    DEFLEC18
 HV7108  HORZ ORDER      -  THIRD
 HV7108
 HV7108.The horizontal coordinates were established by classical geodetic methods
 HV7108.and adjusted by the National Geodetic Survey in January 1992.
 HV7108
 HV7108.The orthometric height was scaled from a topographic map.
 HV7108
 HV7108.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7108.GEOID18 height accuracy estimate available here.
 HV7108
 HV7108.Click photographs - Photos may exist for this station.
 HV7108
 HV7108.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7108
 HV7108. The following values were computed from the NAD 83(1991) position.
 HV7108
 HV7108;                    North         East     Units Scale Factor Converg.
 HV7108;SPC MD       -   135,581.886   441,669.960   MT  0.99994987   +0 18 05.2
 HV7108;SPC MD       -   444,821.57  1,449,045.53   sFT  0.99994987   +0 18 05.2
 HV7108;UTM  18      - 4,305,344.557   368,193.849   MT  0.99981393   -0 57 15.1
 HV7108
 HV7108!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7108!SPC MD       -   1.00000513  x   0.99994987  =   0.99995500
 HV7108!UTM  18      -   1.00000513  x   0.99981393  =   0.99981906
 HV7108
 HV7108:                Primary Azimuth Mark                     Grid Az
 HV7108:SPC MD       -  CADLE                                    165 28 21.7
 HV7108:UTM  18      -  CADLE                                    166 43 42.0
 HV7108
 HV7108_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6819305344(NAD 83)
 HV7108
 HV7108|---------------------------------------------------------------------|
 HV7108| PID    Reference Object                     Distance      Geod. Az  |
 HV7108|                                                           dddmmss.s |
 HV7108| HV7128 CADLE                               APPROX. 1.1 KM 1654626.9 |
 HV7108| CX2076 BEER RM 1                            14.056 METERS 22348     |
 HV7108| HV7122 CARR                                304.155 METERS 29624     |
 HV7108|---------------------------------------------------------------------|
 HV7108
 HV7108                          SUPERSEDED SURVEY CONTROL
 HV7108
 HV7108  NAD 83(1986)-  38 53 13.52282(N)    076 31 10.95084(W) AD(       ) 3
 HV7108  NAD 27      -  38 53 13.11500(N)    076 31 12.09200(W) AD(       ) 3
 HV7108
 HV7108.Superseded values are not recommended for survey control.
 HV7108
 HV7108.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7108.See file dsdata.pdf to determine how the superseded data were derived.
 HV7108
 HV7108_MARKER: DS = TRIANGULATION STATION DISK
 HV7108_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7108
 HV7108  HISTORY     - Date     Condition        Report By
 HV7108  HISTORY     - 1933     MONUMENTED       CGS
 HV7108  HISTORY     - 1957     SEE DESCRIPTION  USGS
 HV7108
 HV7108                          STATION DESCRIPTION
 HV7108
 HV7108'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7108'STATION IS ON THE NE SIDE OF RHODE RIVER ABOUT 1 MILE ABOVE THE
 HV7108'MOUTH, ON PROPERTY OF MR. NORMAN E. CARR.  THE STATION IS ABOUT
 HV7108'300 YARDS SE OF CARRS WHARF IN A FIELD ON TOP OF A 12-FOOT BLUFF.
 HV7108'IT IS 50 FEET FROM THE EDGE OF THE BANK.
 HV7108'
 HV7108'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7108'CONCRETE AS DESCRIBED.
 HV7108
 HV7108                          STATION RECOVERY (1957)
 HV7108
 HV7108'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV7108'STATION DESTROYED.  MORE THAN 50 FT. OF BANK WASHED AWAY HERE.
 HV7108'STATION AND REFERENCE MARK, STILL IN CONCRETE POSTS, WERE FOUND AT
 HV7108'THE FOOT OF THE BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5615 ***********************************************************************
 JV5615  DESIGNATION -  BEER
 JV5615  PID         -  JV5615
 JV5615  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5615  COUNTRY     -  US
 JV5615  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5615
 JV5615                         *CURRENT SURVEY CONTROL
 JV5615  ______________________________________________________________________
 JV5615* NAD 83(1991) POSITION- 39 16 17.65507(N) 076 37 32.08092(W)   ADJUSTED
 JV5615* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5615  ______________________________________________________________________
 JV5615  GEOID HEIGHT    -        -32.721 (meters)                     GEOID18
 JV5615  LAPLACE CORR    -         -5.59  (seconds)                    DEFLEC18
 JV5615  HORZ ORDER      -  THIRD
 JV5615
 JV5615.The horizontal coordinates were established by classical geodetic methods
 JV5615.and adjusted by the National Geodetic Survey in January 1992.
 JV5615
 JV5615.The orthometric height was scaled from a topographic map.
 JV5615
 JV5615.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5615.GEOID18 height accuracy estimate available here.
 JV5615
 JV5615.Click photographs - Photos may exist for this station.
 JV5615
 JV5615.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5615
 JV5615. The following values were computed from the NAD 83(1991) position.
 JV5615
 JV5615;                    North         East     Units Scale Factor Converg.
 JV5615;SPC MD       -   178,220.566   432,309.534   MT  0.99997365   +0 14 06.0
 JV5615;SPC MD       -   584,711.97  1,418,335.53   sFT  0.99997365   +0 14 06.0
 JV5615;UTM  18      - 4,348,173.154   359,774.237   MT  0.99984211   -1 01 45.0
 JV5615
 JV5615!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5615!SPC MD       -   1.00000501  x   0.99997365  =   0.99997866
 JV5615!UTM  18      -   1.00000501  x   0.99984211  =   0.99984712
 JV5615
 JV5615:                Primary Azimuth Mark                     Grid Az
 JV5615:SPC MD       -  WESTERN MD RR BRIDGE DRAW CEN            168 23 09.6
 JV5615:UTM  18      -  WESTERN MD RR BRIDGE DRAW CEN            169 39 00.6
 JV5615
 JV5615_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5977448173(NAD 83)
 JV5615
 JV5615|---------------------------------------------------------------------|
 JV5615| PID    Reference Object                     Distance      Geod. Az  |
 JV5615|                                                           dddmmss.s |
 JV5615| CA9965 BEER RM                              27.330 METERS 02846     |
 JV5615| JV5577 NIRA                                364.644 METERS 11623     |
 JV5615| JV5579 WESTERN MD RR BRIDGE DRAW CEN       APPROX. 0.7 KM 1683715.6 |
 JV5615|---------------------------------------------------------------------|
 JV5615
 JV5615                          SUPERSEDED SURVEY CONTROL
 JV5615
 JV5615  NAD 83(1986)-  39 16 17.65157(N)    076 37 32.08975(W) AD(       ) 3
 JV5615  NAD 27      -  39 16 17.27000(N)    076 37 33.20000(W) AD(       ) 3
 JV5615
 JV5615.Superseded values are not recommended for survey control.
 JV5615
 JV5615.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5615.See file dsdata.pdf to determine how the superseded data were derived.
 JV5615
 JV5615_MARKER: DS = TRIANGULATION STATION DISK
 JV5615_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5615_STAMPING: BEER 1934
 JV5615_MARK LOGO: CGS
 JV5615_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5615+STABILITY: SURFACE MOTION
 JV5615
 JV5615  HISTORY     - Date     Condition        Report By
 JV5615  HISTORY     - 1934     MONUMENTED       CGS
 JV5615
 JV5615                          STATION DESCRIPTION
 JV5615
 JV5615'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5615'STATION IS ON THE WESTERN SHORE OF THE MIDDLE BRANCH OF THE
 JV5615'PATAPSCO RIVER, 1/2 MILE N OF WESTERN MARYLAND RAILROAD BRIDGE,
 JV5615'28 YARDS N OF SLIP, 47 FEET WNW OF DOUBLE PILE DOLPHIN, 30 FEET
 JV5615'FROM HIGH WATER.  THERE IS THE BROKEN FOUNDATIONS OF AN OLD
 JV5615'BUILDING IN VICINITY OF STATION.
 JV5615'
 JV5615'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5615'CONCRETE.
 JV5615'
 JV5615'HEIGHT OF LIGHT ABOVE STATION MARK 3 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7525 ***********************************************************************
 DG7525  DESIGNATION -  BEHLKE
 DG7525  PID         -  DG7525
 DG7525  STATE/COUNTY-  MD/CAROLINE
 DG7525  COUNTRY     -  US
 DG7525  USGS QUAD   -  HOBBS (2017)
 DG7525
 DG7525                         *CURRENT SURVEY CONTROL
 DG7525  ______________________________________________________________________
 DG7525* NAD 83(1986) POSITION- 38 51 04.9    (N) 075 48 57.1    (W)   HD_HELD2
 DG7525* NAVD 88 ORTHO HEIGHT -    12.017 (meters)       39.43  (feet) ADJUSTED
 DG7525  ______________________________________________________________________
 DG7525  GEOID HEIGHT    -        -34.955 (meters)                     GEOID18
 DG7525  DYNAMIC HEIGHT  -         12.010 (meters)       39.40  (feet) COMP
 DG7525  MODELED GRAVITY -    980,036.6   (mgal)                       NAVD 88
 DG7525
 DG7525  VERT ORDER      -  SECOND    CLASS I
 DG7525
 DG7525.The horizontal coordinates were established by autonomous hand held GPS
 DG7525.observations and have an estimated accuracy of +/- 10 meters.
 DG7525
 DG7525.The orthometric height was determined by differential leveling and
 DG7525.adjusted by the NATIONAL GEODETIC SURVEY
 DG7525.in December 2004.
 DG7525
 DG7525.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7525.GEOID18 height accuracy estimate available here.
 DG7525
 DG7525.Click photographs - Photos may exist for this station.
 DG7525
 DG7525.The dynamic height is computed by dividing the NAVD 88
 DG7525.geopotential number by the normal gravity value computed on the
 DG7525.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7525.degrees latitude (g = 980.6199 gals.).
 DG7525
 DG7525.The modeled gravity was interpolated from observed gravity values.
 DG7525
 DG7525;                    North         East    Units  Estimated Accuracy
 DG7525;SPC MD       -   132,173.      502,784.      MT  (+/- 10 meters HH2 GPS)
 DG7525
 DG7525_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2920500598(NAD 83)
 DG7525
 DG7525                          SUPERSEDED SURVEY CONTROL
 DG7525
 DG7525.No superseded survey control is available for this station.
 DG7525
 DG7525_MARKER: DD = SURVEY DISK
 DG7525_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7525_STAMPING: BEHLKE 1967
 DG7525_MARK LOGO: MDBCSM
 DG7525_PROJECTION: RECESSED 8 CENTIMETERS
 DG7525_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7525_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7525+STABILITY: SURFACE MOTION
 DG7525_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7525+SATELLITE: SATELLITE OBSERVATIONS - May 23, 2002
 DG7525
 DG7525  HISTORY     - Date     Condition        Report By
 DG7525  HISTORY     - 1967     MONUMENTED       MDBCSM
 DG7525  HISTORY     - 20020523 GOOD             MDSHA
 DG7525
 DG7525                          STATION DESCRIPTION
 DG7525
 DG7525'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7525'THE STATION IS LOCATED ABOUT 2.3 MI (3.7 KM) SOUTH OF DENTON AND 6.1
 DG7525'MI (9.82 KM) NORTHEAST OF HARMONY.  TO REACH THE STATION FROM THE EAST
 DG7525'END OF THE STATE HIGHWAY 404 BRIDGE OVER THE CHOPTANK RIVER, GO
 DG7525'SOUTHEAST ALONG STATE HIGHWAY 404 FOR 4.2 MI (6.76 KM) TO STATE
 DG7525'HIGHWAY 16 LEADING SOUTHWEST AND THE STATION ON THE RIGHT. THE STATION
 DG7525'IS A STANDARD STATE SURVEY DISK SET IN THE TOP OF A CONCRETE POST
 DG7525'WHICH IS BURIED 3 INCHES. IT IS 71.0 FT (21.6 M) SOUTHWEST OF THE
 DG7525'CENTER LINE OF STATE HIGHWAY 404, 33.4 FT (10.2 M) SOUTHEAST OF THE
 DG7525'CENTER OF STATE HIGHWAY 16, 83.8 FT (25.5 M) NORTH OF A FLAG PLOE,
 DG7525'28.0 FT (8.5 M) WEST OF THE SOUTHWEST END OF A 24 INCH (61 CM) METAL
 DG7525'PIPE RUNNING UNDER STATE HIGHWAY 404, 21.0 FT (6.4 M) NORTH OF
 DG7525'TELEPHONE POLE NUMBER
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0604 ***********************************************************************
 HV0604  DESIGNATION -  BEL ALTON
 HV0604  PID         -  HV0604
 HV0604  STATE/COUNTY-  MD/CHARLES
 HV0604  COUNTRY     -  US
 HV0604  USGS QUAD   -  POPES CREEK (2016)
 HV0604
 HV0604                         *CURRENT SURVEY CONTROL
 HV0604  ______________________________________________________________________
 HV0604* NAD 83(1993) POSITION- 38 27 29.58249(N) 076 59 49.71302(W)   ADJUSTED
 HV0604* NAVD 88 ORTHO HEIGHT -    51.489 (meters)      168.93  (feet) ADJUSTED
 HV0604  ______________________________________________________________________
 HV0604  GEOID HEIGHT    -        -33.177 (meters)                     GEOID18
 HV0604  LAPLACE CORR    -         -4.96  (seconds)                    DEFLEC18
 HV0604  DYNAMIC HEIGHT  -         51.457 (meters)      168.82  (feet) COMP
 HV0604  MODELED GRAVITY -    980,017.2   (mgal)                       NAVD 88
 HV0604
 HV0604  HORZ ORDER      -  FIRST
 HV0604  VERT ORDER      -  FIRST     CLASS II
 HV0604
 HV0604.The horizontal coordinates were established by classical geodetic methods
 HV0604.and adjusted by the National Geodetic Survey in November 1994.
 HV0604
 HV0604.The orthometric height was determined by differential leveling and
 HV0604.adjusted by the NATIONAL GEODETIC SURVEY
 HV0604.in June 1991.
 HV0604
 HV0604.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0604.GEOID18 height accuracy estimate available here.
 HV0604
 HV0604.Click photographs - Photos may exist for this station.
 HV0604
 HV0604.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0604
 HV0604.The dynamic height is computed by dividing the NAVD 88
 HV0604.geopotential number by the normal gravity value computed on the
 HV0604.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0604.degrees latitude (g = 980.6199 gals.).
 HV0604
 HV0604.The modeled gravity was interpolated from observed gravity values.
 HV0604
 HV0604. The following values were computed from the NAD 83(1993) position.
 HV0604
 HV0604;                    North         East     Units Scale Factor Converg.
 HV0604;SPC MD       -    87,865.345   400,249.405   MT  0.99997624   +0 00 06.5
 HV0604;SPC MD       -   288,271.55  1,313,151.59   sFT  0.99997624   +0 00 06.5
 HV0604;UTM  18      - 4,258,546.438   325,744.794   MT  0.99997395   -1 14 32.7
 HV0604
 HV0604!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0604!SPC MD       -   0.99999713  x   0.99997624  =   0.99997337
 HV0604!UTM  18      -   0.99999713  x   0.99997395  =   0.99997108
 HV0604
 HV0604:                Primary Azimuth Mark                     Grid Az
 HV0604:SPC MD       -  BEL ALTON AZ MK                          053 06 16.3
 HV0604:UTM  18      -  BEL ALTON AZ MK                          054 20 55.5
 HV0604
 HV0604_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2574458546(NAD 83)
 HV0604
 HV0604|---------------------------------------------------------------------|
 HV0604| PID    Reference Object                     Distance      Geod. Az  |
 HV0604|                                                           dddmmss.s |
 HV0604| HV7421 LA PLATA MUN TANK                   APPROX. 8.0 KM 0111528.5 |
 HV0604| HV0602 BEL ALTON AZ MK                                    0530622.8 |
 HV0604| HV0605 BEL ALTON RM 1                       28.271 METERS 16016     |
 HV0604| CX2077 BEL ALTON RM 2                       32.223 METERS 27123     |
 HV0604|---------------------------------------------------------------------|
 HV0604
 HV0604                          SUPERSEDED SURVEY CONTROL
 HV0604
 HV0604  NAD 83(1991)-  38 27 29.58239(N)    076 59 49.71571(W) AD(       ) 1
 HV0604  NAD 83(1986)-  38 27 29.58263(N)    076 59 49.72803(W) AD(       ) 1
 HV0604  NAD 27      -  38 27 29.13906(N)    076 59 50.82079(W) AD(       ) 1
 HV0604  NGVD 29              51.73   (m)          169.7    (f) LEVELING    3  
 HV0604  NGVD 29 (11/26/84)   51.727  (m)          169.71   (f) ADJUSTED    1 2
 HV0604
 HV0604.Superseded values are not recommended for survey control.
 HV0604
 HV0604.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0604.See file dsdata.pdf to determine how the superseded data were derived.
 HV0604
 HV0604_MARKER: DS = TRIANGULATION STATION DISK
 HV0604_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0604_STAMPING: BEL ALTON 1942
 HV0604_MARK LOGO: CGS
 HV0604_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0604+STABILITY: SURFACE MOTION
 HV0604
 HV0604  HISTORY     - Date     Condition        Report By
 HV0604  HISTORY     - 1942     MONUMENTED       CGS
 HV0604  HISTORY     - 1958     GOOD             CGS
 HV0604  HISTORY     - 1961     POOR             CGS
 HV0604  HISTORY     - 1971     GOOD             NGS
 HV0604  HISTORY     - 1971     GOOD             NGS
 HV0604  HISTORY     - 20020725 MARK NOT FOUND   MDSHA
 HV0604
 HV0604                          STATION DESCRIPTION
 HV0604
 HV0604'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV0604'STATION IS ABOUT 3/4 MILE SW OF BEL ALTON ON THE CHAPEL POINT
 HV0604'ROAD.  IT IS ABOUT 45 FEET S OF THE PAVED ROAD AND ABOUT 36 FEET
 HV0604'W OF A GRAVEL ROAD.  IT PROJECTS ABOUT 6 INCHES AND IS STAMPED BEL
 HV0604'ALTON 1942.
 HV0604'
 HV0604'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HV0604'DISKS SET IN CONCRETE, AS DESCRIBED.
 HV0604'
 HV0604'REFERENCE MARK NO.1 IS 19 FEET W OF THE CENTER OF THE GRAVEL ROAD
 HV0604'AND 12 FEET S OF A POWER LINE POLE.  IT PROJECTS ABOUT 6 INCHES
 HV0604'AND IS STAMPED BEL ALTON NO.1 1942.
 HV0604'
 HV0604'REFERENCE MARK NO.2 IS 18 FEET W OF THE CENTER OF THE GRAVEL ROAD.
 HV0604'MARK PROJECTS ABOUT 6 INCHES AND IS STAMPED BEL ALTON NO.2 1942.
 HV0604'
 HV0604'AZIMUTH MARK IS LOCATED ABOUT 0.1 MILE N OF THE MAIN INTERSECTION
 HV0604'IN BEL ALTON, AT THE SE CORNER OF THE PROPERTY OF ALBERT ELDER
 HV0604'AND 16 FEET W OF THE CENTER OF U.S. HIGHWAY 301.  IT IS 0.4 MILE
 HV0604'BY ROAD NE OF THE INTERSECTION OF CHAPEL POINT ROAD AND U.S.
 HV0604'HIGHWAY 301. MARK IS STAMPED BEL ALTON 1942.
 HV0604'
 HV0604'TO REACH THE STATION FROM LA PLATA, GO S ON U.S. HIGHWAY 301 FOR
 HV0604'ABOUT 5 MILES TO THE SMALL TOWN OF BEL ALTON.  CONTINUE S ON
 HV0604'HIGHWAY 301 FOR 0.2 MILE TO THE CHAPEL POINT ROAD TO THE RIGHT.
 HV0604'TURN RIGHT AND GO 0.3 MILE TO A GRAVEL ROAD LEFT (REVERSE Y) AND
 HV0604'THE STATION ON THE LEFT.
 HV0604'
 HV0604'A 77-FOOT TOWER WILL SEE 100-FOOT LIGHTS AT STATIONS HILLTOP,
 HV0604'PORT, AND POMFRET.
 HV0604'
 HV0604'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT PLOWDEN.
 HV0604'
 HV0604'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT HICKEY.
 HV0604
 HV0604                          STATION RECOVERY (1958)
 HV0604
 HV0604'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV0604'THE STATION AND REFERENCE MARKS WERE RECOVERED.  A NEW DESCRIPTION
 HV0604'FOLLOWS--
 HV0604'
 HV0604'THE STATION IS LOCATED ABOUT 3/4 MI. SW OF BEL ALTON ON CHAPEL
 HV0604'POINT ROAD.  IT LIES 45 FT. S OF THE CENTERLINE OF CHAPEL POINT
 HV0604'ROAD, 36 FT. E OF A PAVED ROAD AND IT LIES IN THE CROTCH OF THE Y
 HV0604'FORMED BY THE JUNCTION OF THE TWO ROADS.  THE MARK PROJECTS 4 IN.
 HV0604'THE MARK HAS BEEN USED AS A CHOPPING BLOCK, DESTROYING THE
 HV0604'STAMPINGS BUT OTHERWISE IT HAS SUFFERED NO APPARENT DAMAGE.
 HV0604'
 HV0604'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 HV0604'DISKS, SET IN CONCRETE.
 HV0604'
 HV0604'REFERENCE MARK 1 IS STAMPED BEL ALTON NO 1, 1942 AND LIES 19 FT.
 HV0604'W OF THE CENTERLINE OF THE PAVED ROAD AND 105.75 FT. SW OF THE
 HV0604'STATION.  (ORIGINAL DESCRIPTION HAS REFERENCE DISTANCES REVERSED).
 HV0604'THE MARK PROJECTS 6 IN.
 HV0604'
 HV0604'REFERENCE MARK 2 IS STAMPED BEL ALTON NO 2, 1942 AND LIES 18 FT.
 HV0604'W OF THE CENTERLINE OF THE PAVED ROAD AND 92.75 FT. NW OF THE
 HV0604'STATION, NEAR THE JUNCTION OF THE TWO ROADS.  THE MARK PROJECTS 6 IN.
 HV0604'
 HV0604'THE AZIMUTH MARK IS SET BETWEEN THE FIRST TWO HOUSES ON THE W
 HV0604'SIDE OF OLD HIGHWAY 301, 0.1 MI. N OF THE INTERSECTION OF OLD
 HV0604'HIGHWAY 301 AND CHAPEL POINT ROAD.  A HOUSE HAS BEEN BUILT ON THE
 HV0604'LINE OF SIGHT.
 HV0604'
 HV0604'TO REACH THE STATION FROM LA PLATA, GO S ON U.S. HIGHWAY 301 FOR
 HV0604'APPROXIMATELY 5 MI. TO BEL ALTON AND CHAPEL POINT ROAD.  TURN
 HV0604'RIGHT ON CHAPEL POINT ROAD AND GO ABOUT 0.3 MI. TO THE
 HV0604'Y-INTERSECTION AND THE STATION.
 HV0604
 HV0604                          STATION RECOVERY (1961)
 HV0604
 HV0604'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (HTF)
 HV0604'THE BRASS DISK WAS FOUND INTACT, BUT VERY BATTERED.  ALL MARKINGS
 HV0604'AND CENTER POINT OBLITERATED.  THE AZIMUTH MARK AND REFERENCE
 HV0604'MARKERS WERE FOUND TO BE IN VERY GOOD CONDITION.
 HV0604
 HV0604                          STATION RECOVERY (1971)
 HV0604
 HV0604'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV0604'THE STATION MARK, RM 1 AND THE AZIMUTH MARK WERE ALL FOUND AND IN
 HV0604'GOOD CONDITION.
 HV0604'
 HV0604'THE STATION MAY BE REACHED BY GOING 4.85 MILES SOUTH ALONG U. S.
 HV0604'HIGHWAY 301 FROM THE INTERSECTION OF STATE HIGHWAY 6 AT LA PLATA,
 HV0604'THENCE 0.35 MILE WEST ALONG THE BEL ALTON, NEWTON ROAD, AT THE
 HV0604'JUNCTION OF STATE HIGHWAY 427 (IRVING ROAD), IN THE FRONT YARD
 HV0604'FOR AN OLD RESIDENT, 42 FEET NORTHWEST OF THE NORTHWEST CORNER OF
 HV0604'THE HOUSE, 42 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 48
 HV0604'FEET SOUTH OF THE CENTER LINE OF THE BEL ALTON-NEWTON ROAD, ABOUT
 HV0604'LEVEL WITH THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST
 HV0604'PROJECTING 1 INCH ABOVE THE LEVEL OF THE GROUND.
 HV0604'
 HV0604'RM 1 IS 105.8 FEET SOUTH OF THE STATION MARK DESCRIBED, 19 FEET
 HV0604'WEST OF THE CENTER LINE OF THE HIGHWAY, 66 FEET SOUTHWEST OF THE
 HV0604'SOUTHWEST CORNER OF AN OLD RESIDENT, 270 FEET SOUTHWEST OF THE
 HV0604'CENTER OF A ROAD JUNCTION, SET IN THE TOP OF A CONCRETE POST
 HV0604'PROJECTING 4 INCHES ABOVE THE LEVEL OF THE GROUND.
 HV0604'
 HV0604'BEL ALTON AZ MARK MAY BE REACHED BY GOING 4.85 MILES SOUTH ALONG
 HV0604'US HIGHWAY 301 FROM THE INTERSECTION OF STATE HIGHWAY 6 AT LA
 HV0604'PLATA, THENCE 0.3 MILE NORTHEAST ALONG THE BEL ALTON-NEWTON ROAD,
 HV0604'THENCE 0.1 MILE NORTH ALONG FAIRGROUND ROAD, (OLD US HIGHWAY
 HV0604'301), 16 FEET WEST OF THE CENTER LINE OF THE OLD HIGHWAY, 60.5
 HV0604'FEET NORTHEAST OF THE NORTHEAST CORNER OF A 2 STORY BRICK HOUSE, 9
 HV0604'FEET NORTH OF THE CENTER LINE OF A DRIVEWAY TO BRICK HOUSE, 39
 HV0604'FEET SOUTHWEST OF POWER LINE POLE NO. 158, ABOUT LEVEL WITH THE
 HV0604'ROAD AND SET IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES
 HV0604'ABOVE THE LEVEL OF THE GROUND.
 HV0604'
 HV0604'NOTE--THE STAMPING ON THE STATION MARK DISK HAS BEEN BATTERED AND
 HV0604'IS NO LONGER LEGIBLE.
 HV0604'
 HV0604'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--5.2 MILES SOUTH.
 HV0604
 HV0604                          STATION RECOVERY (1971)
 HV0604
 HV0604'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0604'5.2 MI S FROM LA PLATA.
 HV0604'ABOUT 4.85 MILES SOUTH ALONG U.S. HIGHWAY 301 FROM THE
 HV0604'INTERSECTION OF STATE HIGHWAY 6 AT LA PLATA, THENCE 0.35 MILE
 HV0604'WEST ALONG BEL ALTON-NEWTON ROAD, AT THE JUNCTION OF STATE
 HV0604'HIGHWAY 427 (IRVING ROAD), IN THE FRONT YARD FOR AN OLD RESIDENT,
 HV0604'42 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE HOUSE, 36 FEET
 HV0604'NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 48 FEET SOUTH OF THE
 HV0604'CENTER LINE OF THE BEL ALTON-NEWTON ROAD, ABOUT LEVEL WITH THE
 HV0604'HIGHWAY AND SET IN THE TP OF A CONCRETE POST PROJECTING 1 INCH
 HV0604'ABOVE THE LEVEL OF THE GROUND.  THE DISK HAS BEEN BATTERED.
 HV0604'STAMPING NO LONGER LEGIBLE.  NOTE-- MARK MAY BE REACHED BY GOING
 HV0604'1.8 MILES NORTHWEST ALONG STATE HIGHWAY 427 (IRVING ROAD) FROM
 HV0604'THE POST OFFICE AT FAULKNER.
 HV0604
 HV0604                          STATION RECOVERY (2002)
 HV0604
 HV0604'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0604'NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0602 ***********************************************************************
 HV0602  DESIGNATION -  BEL ALTON AZ MK
 HV0602  PID         -  HV0602
 HV0602  STATE/COUNTY-  MD/CHARLES
 HV0602  COUNTRY     -  US
 HV0602  USGS QUAD   -  POPES CREEK (2016)
 HV0602
 HV0602                         *CURRENT SURVEY CONTROL
 HV0602  ______________________________________________________________________
 HV0602* NAD 83(1986) POSITION- 38 27 50.4    (N) 076 59 14.5    (W)   HD_HELD2
 HV0602* NAVD 88 ORTHO HEIGHT -    54.781 (meters)      179.73  (feet) ADJUSTED
 HV0602  ______________________________________________________________________
 HV0602  GEOID HEIGHT    -        -33.188 (meters)                     GEOID18
 HV0602  DYNAMIC HEIGHT  -         54.747 (meters)      179.62  (feet) COMP
 HV0602  MODELED GRAVITY -    980,016.9   (mgal)                       NAVD 88
 HV0602
 HV0602  VERT ORDER      -  FIRST     CLASS II
 HV0602
 HV0602.The horizontal coordinates were established by autonomous hand held GPS
 HV0602.observations and have an estimated accuracy of +/- 10 meters.
 HV0602
 HV0602.The orthometric height was determined by differential leveling and
 HV0602.adjusted by the NATIONAL GEODETIC SURVEY
 HV0602.in June 1991.
 HV0602
 HV0602.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0602.GEOID18 height accuracy estimate available here.
 HV0602
 HV0602.Click photographs - Photos may exist for this station.
 HV0602
 HV0602.The dynamic height is computed by dividing the NAVD 88
 HV0602.geopotential number by the normal gravity value computed on the
 HV0602.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0602.degrees latitude (g = 980.6199 gals.).
 HV0602
 HV0602.The modeled gravity was interpolated from observed gravity values.
 HV0602
 HV0602;                    North         East    Units  Estimated Accuracy
 HV0602;SPC MD       -    88,507.      401,103.      MT  (+/- 10 meters HH2 GPS)
 HV0602
 HV0602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2661259169(NAD 83)
 HV0602
 HV0602                          SUPERSEDED SURVEY CONTROL
 HV0602
 HV0602  NGVD 29 (11/26/84)   55.017  (m)          180.50   (f) ADJUSTED    1 2
 HV0602
 HV0602.Superseded values are not recommended for survey control.
 HV0602
 HV0602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0602.See file dsdata.pdf to determine how the superseded data were derived.
 HV0602
 HV0602_MARKER: DZ = AZIMUTH MARK DISK
 HV0602_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0602_STAMPING: BEL ALTON 1942
 HV0602_MARK LOGO: CGS
 HV0602_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0602_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0602+STABILITY: SURFACE MOTION
 HV0602
 HV0602  HISTORY     - Date     Condition        Report By
 HV0602  HISTORY     - 1942     MONUMENTED       CGS
 HV0602  HISTORY     - 1971     GOOD             NGS
 HV0602  HISTORY     - 20020725 GOOD             MDSHA
 HV0602  HISTORY     - 20050813 GOOD             GEOCAC
 HV0602
 HV0602                          STATION DESCRIPTION
 HV0602
 HV0602'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0602'5.2 MI S FROM LA PLATA.
 HV0602'ABOUT 4.85 MILES SOUTH ALONG U.S. HIGHWAY 301 FROM THE
 HV0602'INTERSECTION OF STATE HIGHWAY 6 AT LA PLATA, THENCE 0.3 MILE
 HV0602'NORTHEAST ALONG THE BEL ALTON-NEWTON ROAD, THENCE 0.1 MILE NORTH
 HV0602'ALONG FAIRGROUND ROAD, 16 FEET WEST OF THE CENTER LINE OF
 HV0602'FAIRGROUND ROAD (OLD U.S. HIGHWAY 301), 60.5 FEET NORTHEAST OF
 HV0602'THE NORTHEAST CORNER OF A 2 STORY BRICK HOUSE, 9 FEET NORTH OF
 HV0602'THE CENTER LINE OF THE DRIVEWAY TO BRICK HOUSE, 39 FEET SOUTHWEST
 HV0602'OF POWER LINE POLE NO. 158, ABOUT LEVEL WITH THE ROAD AND SET IN
 HV0602'THE TOP OF A CONCRETE POST PROJECTING 6 INCHES ABOVE THE LEVEL OF
 HV0602'THE GROUND.
 HV0602
 HV0602                          STATION RECOVERY (2002)
 HV0602
 HV0602'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0602'RECOVERED AS DESCRIBED.
 HV0602
 HV0602                          STATION RECOVERY (2005)
 HV0602
 HV0602'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV0602'LOCATED AS DESCRIBED, SET IN THE TOP OF AN 11 INCH SQUARE CONCRETE
 HV0602'POST ABOUT 6 FEET WEST OF THE EDGE OF PAVEMENT. THE BRICK HOUSE
 HV0602'MENTIONED IN THE 1971 DESCRIPTION IS STREET NUMBER 9055.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0605 ***********************************************************************
 HV0605  DESIGNATION -  BEL ALTON RM 1
 HV0605  PID         -  HV0605
 HV0605  STATE/COUNTY-  MD/CHARLES
 HV0605  COUNTRY     -  US
 HV0605  USGS QUAD   -  POPES CREEK (2016)
 HV0605
 HV0605                         *CURRENT SURVEY CONTROL
 HV0605  ______________________________________________________________________
 HV0605* NAD 83(1986) POSITION- 38 27 28.72   (N) 076 59 49.32   (W)   HD_HELD1
 HV0605* NAVD 88 ORTHO HEIGHT -    51.429 (meters)      168.73  (feet) ADJUSTED
 HV0605  ______________________________________________________________________
 HV0605  GEOID HEIGHT    -        -33.178 (meters)                     GEOID18
 HV0605  DYNAMIC HEIGHT  -         51.397 (meters)      168.63  (feet) COMP
 HV0605  MODELED GRAVITY -    980,017.2   (mgal)                       NAVD 88
 HV0605
 HV0605  VERT ORDER      -  FIRST     CLASS II
 HV0605
 HV0605.The horizontal coordinates were determined by differentially corrected
 HV0605.hand held GPS observations or other comparable positioning techniques
 HV0605.and have an estimated accuracy of +/- 3 meters.
 HV0605
 HV0605.The orthometric height was determined by differential leveling and
 HV0605.adjusted by the NATIONAL GEODETIC SURVEY
 HV0605.in June 1991.
 HV0605
 HV0605.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0605.GEOID18 height accuracy estimate available here.
 HV0605
 HV0605.Click photographs - Photos may exist for this station.
 HV0605
 HV0605.The dynamic height is computed by dividing the NAVD 88
 HV0605.geopotential number by the normal gravity value computed on the
 HV0605.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0605.degrees latitude (g = 980.6199 gals.).
 HV0605
 HV0605.The modeled gravity was interpolated from observed gravity values.
 HV0605
 HV0605;                    North         East    Units  Estimated Accuracy
 HV0605;SPC MD       -    87,838.8     400,258.9     MT  (+/- 3 meters HH1 GPS) 
 HV0605
 HV0605_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2575358519(NAD 83)
 HV0605
 HV0605                          SUPERSEDED SURVEY CONTROL
 HV0605
 HV0605  NGVD 29 (11/26/84)   51.666  (m)          169.51   (f) ADJUSTED    1 2
 HV0605
 HV0605.Superseded values are not recommended for survey control.
 HV0605
 HV0605.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0605.See file dsdata.pdf to determine how the superseded data were derived.
 HV0605
 HV0605_MARKER: DR = REFERENCE MARK DISK
 HV0605_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0605_STAMPING: BEL ALTON NO 1 1942
 HV0605_MARK LOGO: CGS
 HV0605_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0605_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0605+STABILITY: SURFACE MOTION
 HV0605_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0605+SATELLITE: SATELLITE OBSERVATIONS - August 13, 2005
 HV0605
 HV0605  HISTORY     - Date     Condition        Report By
 HV0605  HISTORY     - 1942     MONUMENTED       CGS
 HV0605  HISTORY     - 1971     GOOD             NGS
 HV0605  HISTORY     - 20020725 GOOD             MDSHA
 HV0605  HISTORY     - 20050813 GOOD             GEOCAC
 HV0605
 HV0605                          STATION DESCRIPTION
 HV0605
 HV0605'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0605'5.2 MI S FROM LA PLATA.
 HV0605'ABOUT 4.85 MILES SOUTH ALONG U.S. HIGHWAY 301 FROM THE
 HV0605'INTERSECTION OF STATE HIGHWAY 6 AT LA PLATA, THENCE 0.35 MILE
 HV0605'WEST ALONG THE BEL ALTON-NEWTON ROAD, ABOUT 270 FEET SOUTHWEST OF
 HV0605'THE JUNCTION FORMED BY THE ROAD AND STATE HIGHWAY 427, 105.8 FEET
 HV0605'SOUTH OF THE STATION MARK DESCRIBED, 19 FEET WEST OF THE CENTER
 HV0605'LINE OF THE HIGHWAY (IRVING ROAD), 12 FEET SOUTHWEST OF A POLE,
 HV0605'66 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF AN OLD HOUSE, ABOUT
 HV0605'LEVEL WITH THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST
 HV0605'PROJECTING 4 INCHES ABOVE THE LEVEL OF THE GROUND.  NOTE-- MARK
 HV0605'MAY BE REACHED BY GOING 1.8 MILES NORTHWEST ALONG STATE HIGHWAY
 HV0605'427 FROM THE POST OFFICE AT FAULKNER.
 HV0605
 HV0605                          STATION RECOVERY (2002)
 HV0605
 HV0605'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0605'RECOVERED AS DESCRIBED.
 HV0605
 HV0605                          STATION RECOVERY (2005)
 HV0605
 HV0605'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV0605'FOUND ON THE WEST SIDE OF STATE HIGHWAY 427. STATION IS APPROXIMATELY
 HV0605'15 FEET WEST OF THE CENTER OF THE HIGHWAY, AND ABOUT 15 FEET NORTHEAST
 HV0605'OF POLE NUMBER 2. THE DISK IS SET IN AN 11-INCH SQUARE CONCRETE POST,
 HV0605'WHICH PROJECTS APPROXIMATELY 2 INCHES ABOVE GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6281 ***********************************************************************
 JV6281  DESIGNATION -  BELAIR
 JV6281  PID         -  JV6281
 JV6281  STATE/COUNTY-  MD/HARFORD
 JV6281  COUNTRY     -  US
 JV6281  USGS QUAD   -  BEL AIR (2016)
 JV6281
 JV6281                         *CURRENT SURVEY CONTROL
 JV6281  ______________________________________________________________________
 JV6281* NAD 83(2011) POSITION- 39 31 51.63530(N) 076 20 43.63917(W)   ADJUSTED
 JV6281* NAD 83(2011) ELLIP HT-    75.964 (meters)        (06/27/12)   ADJUSTED
 JV6281* NAD 83(2011) EPOCH   -  2010.00
 JV6281* NAVD 88 ORTHO HEIGHT -   108.770 (meters)      356.86  (feet) ADJUSTED
 JV6281  ______________________________________________________________________
 JV6281  GEOID HEIGHT    -        -32.795 (meters)                     GEOID18
 JV6281  NAD 83(2011) X  -  1,162,884.937 (meters)                     COMP
 JV6281  NAD 83(2011) Y  - -4,786,846.767 (meters)                     COMP
 JV6281  NAD 83(2011) Z  -  4,038,007.884 (meters)                     COMP
 JV6281  LAPLACE CORR    -         -3.92  (seconds)                    DEFLEC18
 JV6281  DYNAMIC HEIGHT  -        108.715 (meters)      356.68  (feet) COMP
 JV6281  MODELED GRAVITY -    980,118.3   (mgal)                       NAVD 88
 JV6281
 JV6281  VERT ORDER      -  FIRST     CLASS II
 JV6281
 JV6281  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6281  Standards:
 JV6281         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6281            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6281  -------------------------------------------------------------------
 JV6281  NETWORK    1.44   3.45           0.59   0.56   1.76      0.41502224
 JV6281  -------------------------------------------------------------------
 JV6281  Click here for local accuracies and other accuracy information.
 JV6281
 JV6281.The horizontal coordinates were established by GPS observations
 JV6281.and adjusted by the National Geodetic Survey in June 2012.
 JV6281
 JV6281.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6281.been affixed to the stable North American tectonic plate. See 
 JV6281.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6281
 JV6281.The horizontal coordinates are valid at the epoch date displayed above
 JV6281.which is a decimal equivalence of Year/Month/Day.
 JV6281
 JV6281.The orthometric height was determined by differential leveling and
 JV6281.adjusted by the NATIONAL GEODETIC SURVEY
 JV6281.in June 1991.
 JV6281
 JV6281.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6281.GEOID18 height accuracy estimate available here.
 JV6281
 JV6281.Click photographs - Photos may exist for this station.
 JV6281
 JV6281.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6281
 JV6281.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6281
 JV6281.The ellipsoidal height was determined by GPS observations
 JV6281.and is referenced to NAD 83.
 JV6281
 JV6281.The dynamic height is computed by dividing the NAVD 88
 JV6281.geopotential number by the normal gravity value computed on the
 JV6281.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6281.degrees latitude (g = 980.6199 gals.).
 JV6281
 JV6281.The modeled gravity was interpolated from observed gravity values.
 JV6281
 JV6281. The following values were computed from the NAD 83(2011) position.
 JV6281
 JV6281;                    North         East     Units Scale Factor Converg.
 JV6281;SPC MD       -   207,159.575   456,274.971   MT  1.00001518   +0 24 38.9
 JV6281;SPC MD       -   679,656.04  1,496,962.13   sFT  1.00001518   +0 24 38.9
 JV6281;UTM  18      - 4,376,570.241   384,368.459   MT  0.99976462   -0 51 23.3
 JV6281
 JV6281!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6281!SPC MD       -   0.99998808  x   1.00001518  =   1.00000326
 JV6281!UTM  18      -   0.99998808  x   0.99976462  =   0.99975271
 JV6281
 JV6281_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8436876570(NAD 83)
 JV6281
 JV6281|---------------------------------------------------------------------|
 JV6281| PID    Reference Object                     Distance      Geod. Az  |
 JV6281|                                                           dddmmss.s |
 JV6281| JV6316 BELAIR AZ MK                        316.330 METERS 26920     |
 JV6281|---------------------------------------------------------------------|
 JV6281
 JV6281                          SUPERSEDED SURVEY CONTROL
 JV6281
 JV6281  NAD 83(2007)-  39 31 51.63545(N)    076 20 43.63999(W) AD(2002.00) 0
 JV6281  ELLIP H (02/10/07)   75.985  (m)                       GP(2002.00)    
 JV6281  ELLIP H (09/18/02)   75.991  (m)                       GP(       ) 4 2
 JV6281  NAD 83(1991)-  39 31 51.63532(N)    076 20 43.63924(W) AD(       ) 1
 JV6281  ELLIP H (01/27/92)   75.970  (m)                       GP(       ) 4 1
 JV6281  NAD 83(1986)-  39 31 51.62889(N)    076 20 43.64671(W) AD(       ) 1
 JV6281  NGVD 29             109.02   (m)          357.7    (f) LEVELING    3  
 JV6281
 JV6281.Superseded values are not recommended for survey control.
 JV6281
 JV6281.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6281.See file dsdata.pdf to determine how the superseded data were derived.
 JV6281
 JV6281_MARKER: DD = SURVEY DISK
 JV6281_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6281_STAMPING: 134 BELAIR 1989
 JV6281_MARK LOGO: MD-025
 JV6281_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6281_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6281+STABILITY: SURFACE MOTION
 JV6281_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6281+SATELLITE: SATELLITE OBSERVATIONS - April 13, 2002
 JV6281
 JV6281  HISTORY     - Date     Condition        Report By
 JV6281  HISTORY     - 1989     MONUMENTED       RDA
 JV6281  HISTORY     - 20020413 GOOD             USPSQD
 JV6281  HISTORY     - 20090827 POOR             NGS
 JV6281
 JV6281                          STATION DESCRIPTION
 JV6281
 JV6281'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6281'THE STATION IS LOCATED IN CENTRAL HARFORD COUNTY, MARYLAND ABOUT IN
 JV6281'THE TOWN OF BEL AIR ON FEDERAL BUSINESS HIGHWAY 1.  TO REACH THE
 JV6281'STATION FROM THE INTERSECTION OF STATE HIGHWAY 24 AND FEDERAL
 JV6281'BUSINESS HIGHWAY 1 PROCEED NORTHEAST ALONG HIGHWAY 1 0.55 MILES TO
 JV6281'ITS INTERSECTION WITH SOUTH KENMORE STREET.  TURN RIGHT AND PROCEED
 JV6281'SOUTHEAST ALONG KENMORE STREET 0.2 MILES TO BEL AIR HIGH SCHOOL ON
 JV6281'THE RIGHT AND THE STATION ON THE RIGHT.  THE STATION IS A STANDARD
 JV6281'HARFORD COUNTY STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND
 JV6281'STAMPED 134 BELAIR 1989.  THE STATION IS 46.1 FEET SOUTH FROM B G AND
 JV6281'E POLE NUMBER 186653, 36.9 FEET SOUTHWEST FROM THE SOUTH FACE OF CURB
 JV6281'OF SOUTH KENMORE STREET, 19.8 FEET NORTH FROM FACE OF CURB CORNER
 JV6281'PARKING BAY ON THE ACCES ROAD TO BEL AIR HIGH SCHOOL.
 JV6281
 JV6281                          STATION RECOVERY (2002)
 JV6281
 JV6281'RECOVERY NOTE BY US POWER SQUADRON 2002 (TB)
 JV6281'REPLACE TURN RIGHT AND PROCEED SOUTHEAST ALONG KENMORE STREET WITH
 JV6281'PROCEED STRAIGHT ON KENMORE STREET. CHANGE STATE HIGHWAY 24 TO 924.
 JV6281
 JV6281                          STATION RECOVERY (2009)
 JV6281
 JV6281'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (KER)
 JV6281'DISTROYED CAN NOT LOCATE AS OF STAKEOUT PREFORMED 08-26-2009 BY OUR
 JV6281'SURVEY CREW.  WE DO NOT KNOW WHAT HAPPENED TO THE MONUMENT / DISK BUT
 JV6281'I WANTED TO EMAIL TO MAKE SURE THAT THIS WAS KNOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6316 ***********************************************************************
 JV6316  DESIGNATION -  BELAIR AZ MK
 JV6316  PID         -  JV6316
 JV6316  STATE/COUNTY-  MD/HARFORD
 JV6316  COUNTRY     -  US
 JV6316  USGS QUAD   -  BEL AIR (2016)
 JV6316
 JV6316                         *CURRENT SURVEY CONTROL
 JV6316  ______________________________________________________________________
 JV6316* NAD 83(2011) POSITION- 39 31 51.51563(N) 076 20 56.88382(W)   ADJUSTED
 JV6316* NAD 83(2011) ELLIP HT-    73.100 (meters)        (06/27/12)   ADJUSTED
 JV6316* NAD 83(2011) EPOCH   -  2010.00
 JV6316* NAVD 88 ORTHO HEIGHT -   105.897 (meters)      347.43  (feet) ADJUSTED
 JV6316  ______________________________________________________________________
 JV6316  GEOID HEIGHT    -        -32.788 (meters)                     GEOID18
 JV6316  NAD 83(2011) X  -  1,162,577.596 (meters)                     COMP
 JV6316  NAD 83(2011) Y  - -4,786,921.564 (meters)                     COMP
 JV6316  NAD 83(2011) Z  -  4,038,003.214 (meters)                     COMP
 JV6316  LAPLACE CORR    -         -3.88  (seconds)                    DEFLEC18
 JV6316  DYNAMIC HEIGHT  -        105.843 (meters)      347.25  (feet) COMP
 JV6316  MODELED GRAVITY -    980,118.4   (mgal)                       NAVD 88
 JV6316
 JV6316  VERT ORDER      -  FIRST     CLASS II
 JV6316
 JV6316  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6316  Standards:
 JV6316         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6316            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6316  -------------------------------------------------------------------
 JV6316  NETWORK    1.62   3.74           0.66   0.66   1.91      0.15718478
 JV6316  -------------------------------------------------------------------
 JV6316  Click here for local accuracies and other accuracy information.
 JV6316
 JV6316.The horizontal coordinates were established by GPS observations
 JV6316.and adjusted by the National Geodetic Survey in June 2012.
 JV6316
 JV6316.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6316.been affixed to the stable North American tectonic plate. See 
 JV6316.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6316
 JV6316.The horizontal coordinates are valid at the epoch date displayed above
 JV6316.which is a decimal equivalence of Year/Month/Day.
 JV6316
 JV6316.The orthometric height was determined by differential leveling and
 JV6316.adjusted by the NATIONAL GEODETIC SURVEY
 JV6316.in June 1991.
 JV6316
 JV6316.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6316.GEOID18 height accuracy estimate available here.
 JV6316
 JV6316.Click photographs - Photos may exist for this station.
 JV6316
 JV6316.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6316
 JV6316.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6316
 JV6316.The ellipsoidal height was determined by GPS observations
 JV6316.and is referenced to NAD 83.
 JV6316
 JV6316.The dynamic height is computed by dividing the NAVD 88
 JV6316.geopotential number by the normal gravity value computed on the
 JV6316.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6316.degrees latitude (g = 980.6199 gals.).
 JV6316
 JV6316.The modeled gravity was interpolated from observed gravity values.
 JV6316
 JV6316. The following values were computed from the NAD 83(2011) position.
 JV6316
 JV6316;                    North         East     Units Scale Factor Converg.
 JV6316;SPC MD       -   207,153.623   455,958.692   MT  1.00001517   +0 24 30.6
 JV6316;SPC MD       -   679,636.51  1,495,924.48   sFT  1.00001517   +0 24 30.6
 JV6316;UTM  18      - 4,376,571.285   384,052.205   MT  0.99976552   -0 51 31.7
 JV6316
 JV6316!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6316!SPC MD       -   0.99998853  x   1.00001517  =   1.00000370
 JV6316!UTM  18      -   0.99998853  x   0.99976552  =   0.99975405
 JV6316
 JV6316_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8405276571(NAD 83)
 JV6316
 JV6316|---------------------------------------------------------------------|
 JV6316| PID    Reference Object                     Distance      Geod. Az  |
 JV6316|                                                           dddmmss.s |
 JV6316| JV6281 BELAIR                              316.330 METERS 08920     |
 JV6316|---------------------------------------------------------------------|
 JV6316
 JV6316                          SUPERSEDED SURVEY CONTROL
 JV6316
 JV6316  NAD 83(2007)-  39 31 51.51578(N)    076 20 56.88464(W) AD(2002.00) 0
 JV6316  ELLIP H (02/10/07)   73.121  (m)                       GP(2002.00)    
 JV6316  ELLIP H (09/18/02)   73.127  (m)                       GP(       ) 4 2
 JV6316  NAD 83(1991)-  39 31 51.51564(N)    076 20 56.88389(W) AD(       ) 1
 JV6316  ELLIP H (01/27/92)   73.106  (m)                       GP(       ) 4 1
 JV6316  NAD 83(1986)-  39 31 51.50922(N)    076 20 56.89136(W) AD(       ) 1
 JV6316  NGVD 29             106.13   (m)          348.2    (f) LEVELING    3  
 JV6316
 JV6316.Superseded values are not recommended for survey control.
 JV6316
 JV6316.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6316.See file dsdata.pdf to determine how the superseded data were derived.
 JV6316
 JV6316_MARKER: DZ = AZIMUTH MARK DISK
 JV6316_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6316_STAMPING: 134 BELAIR 1989
 JV6316_MARK LOGO: MD-025
 JV6316_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6316_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6316+STABILITY: SURFACE MOTION
 JV6316_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6316+SATELLITE: SATELLITE OBSERVATIONS - September 02, 2000
 JV6316
 JV6316  HISTORY     - Date     Condition        Report By
 JV6316  HISTORY     - 1989     MONUMENTED       RDA
 JV6316  HISTORY     - 20000902 GOOD             GEOMET
 JV6316
 JV6316                          STATION DESCRIPTION
 JV6316
 JV6316'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6316'THE STATION IS LOCATED IN CENTRAL HARFORD COUNTY, MARYLAND ABOUT IN
 JV6316'THE TOWN OF BEL AIR ON FEDERAL BUSINESS HIGHWAY 1.  TO REACH THE
 JV6316'STATION FROM THE INTERSECTION OF STATE HIGHWAY 24 AND FEDERAL
 JV6316'BUSINESS HIGHWAY 1 PROCEED NORTHEAST ALONG HIGHWAY 1 0.55 MILES TO
 JV6316'ITS INTERSECTION WITH SOUTH KENMORE STREET.  TURN RIGHT AND PROCEED
 JV6316'SOUTHEAST ALONG KENMORE STREET 0.2 MILES TO BEL AIR HIGH SCHOOL ON
 JV6316'THE RIGHT AND THE STATION ON THE RIGHT.  TO REACH THE AZIMUTH MARK
 JV6316'FROM THE STATION PROCEED NORTHWEST ACROSS THE BEL AIR HIGH SCHOOL
 JV6316'PLAYING FIELDS 0.2 MILES TO THE MARK.  THE MARK IS A STANDARD HARFORD
 JV6316'COUNTY AZIMUTH DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED
 JV6316'134 BELAIR 1989.  THE MARK IS 24.5 FEET EAST FROM A ONE STORY MASONRY
 JV6316'BUILDING, 67.1 FEET NORTHEAST FROM THE NORTH END OF BASEBALL
 JV6316'BACKSTOP, 100.8 FEET SOUTHWEST FROM A 30 INCH ASH TREE, AND 1037.83
 JV6316'FEET FROM THE STATION.
 JV6316
 JV6316                          STATION RECOVERY (2000)
 JV6316
 JV6316'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 JV6316'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6718 ***********************************************************************
 JV6718  DESIGNATION -  BELCAMP
 JV6718  PID         -  JV6718
 JV6718  STATE/COUNTY-  MD/HARFORD
 JV6718  COUNTRY     -  US
 JV6718  USGS QUAD   -  PERRYMAN (2016)
 JV6718
 JV6718                         *CURRENT SURVEY CONTROL
 JV6718  ______________________________________________________________________
 JV6718* NAD 83(2011) POSITION- 39 28 18.18476(N) 076 13 57.42532(W)   ADJUSTED
 JV6718* NAD 83(2011) ELLIP HT-   -23.035 (meters)        (06/27/12)   ADJUSTED
 JV6718* NAD 83(2011) EPOCH   -  2010.00
 JV6718* NAVD 88 ORTHO HEIGHT -    10.1   (meters)       33.    (feet) GPS OBS
 JV6718  ______________________________________________________________________
 JV6718  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6718  GEOID HEIGHT    -        -33.390 (meters)                     GEOID93
 JV6718  GEOID HEIGHT    -        -33.117 (meters)                     GEOID18
 JV6718  NAD 83(2011) X  -  1,173,288.130 (meters)                     COMP
 JV6718  NAD 83(2011) Y  - -4,788,540.189 (meters)                     COMP
 JV6718  NAD 83(2011) Z  -  4,032,865.479 (meters)                     COMP
 JV6718  LAPLACE CORR    -         -2.29  (seconds)                    DEFLEC18
 JV6718
 JV6718  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6718  Standards:
 JV6718         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6718            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6718  -------------------------------------------------------------------
 JV6718  NETWORK    1.08   2.06           0.48   0.39   1.05      0.18834179
 JV6718  -------------------------------------------------------------------
 JV6718  Click here for local accuracies and other accuracy information.
 JV6718
 JV6718.The horizontal coordinates were established by GPS observations
 JV6718.and adjusted by the National Geodetic Survey in June 2012.
 JV6718
 JV6718.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6718.been affixed to the stable North American tectonic plate. See 
 JV6718.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6718
 JV6718.The horizontal coordinates are valid at the epoch date displayed above
 JV6718.which is a decimal equivalence of Year/Month/Day.
 JV6718
 JV6718.The orthometric height was determined by GPS observations and a
 JV6718.high-resolution geoid model.
 JV6718
 JV6718.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6718.GEOID18 height accuracy estimate available here.
 JV6718
 JV6718.Click photographs - Photos may exist for this station.
 JV6718
 JV6718.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6718
 JV6718.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6718
 JV6718.The ellipsoidal height was determined by GPS observations
 JV6718.and is referenced to NAD 83.
 JV6718
 JV6718. The following values were computed from the NAD 83(2011) position.
 JV6718
 JV6718;                    North         East     Units Scale Factor Converg.
 JV6718;SPC MD       -   200,652.422   466,031.357   MT  1.00000387   +0 28 53.9
 JV6718;SPC MD       -   658,307.15  1,528,971.21   sFT  1.00000387   +0 28 53.9
 JV6718;UTM  18      - 4,369,850.808   393,976.182   MT  0.99973840   -0 47 01.1
 JV6718
 JV6718!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6718!SPC MD       -   1.00000361  x   1.00000387  =   1.00000748
 JV6718!UTM  18      -   1.00000361  x   0.99973840  =   0.99974201
 JV6718
 JV6718_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9397669850(NAD 83)
 JV6718
 JV6718|---------------------------------------------------------------------|
 JV6718| PID    Reference Object                     Distance      Geod. Az  |
 JV6718|                                                           dddmmss.s |
 JV6718| JV7289 BATA AZ MK                          369.247 METERS 24135     |
 JV6718|---------------------------------------------------------------------|
 JV6718
 JV6718                          SUPERSEDED SURVEY CONTROL
 JV6718
 JV6718  NAD 83(2007)-  39 28 18.18484(N)    076 13 57.42596(W) AD(2002.00) 0
 JV6718  ELLIP H (02/10/07)  -23.018  (m)                       GP(2002.00)    
 JV6718  ELLIP H (08/30/02)  -23.015  (m)                       GP(       ) 4 2
 JV6718  NAD 83(1991)-  39 28 18.18428(N)    076 13 57.42664(W) AD(       ) 1
 JV6718  ELLIP H (01/27/92)  -23.029  (m)                       GP(       ) 4 1
 JV6718  NAD 83(1986)-  39 28 18.17769(N)    076 13 57.43249(W) AD(       ) 1
 JV6718  NGVD 29 (06/18/91)   10.3    (m)  UNKNOWN  model used  GPS OBS        
 JV6718
 JV6718.Superseded values are not recommended for survey control.
 JV6718
 JV6718.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6718.See file dsdata.pdf to determine how the superseded data were derived.
 JV6718
 JV6718_MARKER: DD = SURVEY DISK
 JV6718_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6718_STAMPING: 9 BELCAMP 1989
 JV6718_MARK LOGO: MD-025
 JV6718_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6718_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6718+STABILITY: SURFACE MOTION
 JV6718_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6718+SATELLITE: SATELLITE OBSERVATIONS - December 09, 1993
 JV6718
 JV6718  HISTORY     - Date     Condition        Report By
 JV6718  HISTORY     - 1989     MONUMENTED       RDA
 JV6718  HISTORY     - 19931209 GOOD             GEOMET
 JV6718  HISTORY     - 20060930 MARK NOT FOUND   USPSQD
 JV6718
 JV6718                          STATION DESCRIPTION
 JV6718
 JV6718'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6718'THE STATION IS LOCATED IN SOUTHERN HARFORD COUNTY, MARYLAND AT THE
 JV6718'BELCAMP INDUSTRIAL PARK ON U.S. HIGHWAY 40.
 JV6718'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV6718'STATE HIGHWAY 152 PROCEED NORTHEAST ON HIGHWAY 40 6.3 MILES TO A PAVED
 JV6718'ENTRANCE ROAD TO THE BELCAMP INDUSTRIAL PARK AND THE STATION ON THE
 JV6718'RIGHT.
 JV6718'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6718'ABOUT 1 INCH BELOW GROUND STAMPED 9 BELCAMP 1989.  THE STATION IS 94.5
 JV6718'FEET WEST FROM A FIRE HYDRANT EAST OF THE ENTRANCE ROAD, 43.1 FEET
 JV6718'NORTHWEST FROM THE WEST END OF A BOARD FENCE WEST OF THE ENTRANCE
 JV6718'ROAD, AND 8.8 FEET SOUTHEAST FROM THE SOUTH EDGE OF PAVEMENT OF THE
 JV6718'EAST BOUND LANES OF HIGHWAY 40.
 JV6718
 JV6718                          STATION RECOVERY (1993)
 JV6718
 JV6718'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6718'RECOVERED IN GOOD CONDITION.
 JV6718
 JV6718                          STATION RECOVERY (2006)
 JV6718
 JV6718'RECOVERY NOTE BY US POWER SQUADRON 2006 (JR)
 JV6718'AREA RELANDSCAPED IN 2002.  MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4094 ***********************************************************************
 DS4094  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4094  DESIGNATION -  BELFAST
 DS4094  PID         -  DS4094
 DS4094  STATE/COUNTY-  MD/BALTIMORE
 DS4094  COUNTRY     -  US
 DS4094  USGS QUAD   -  HEREFORD (2016)
 DS4094
 DS4094                         *CURRENT SURVEY CONTROL
 DS4094  ______________________________________________________________________
 DS4094* NAD 83(2011) POSITION- 39 32 30.65401(N) 076 38 57.87648(W)   ADJUSTED
 DS4094* NAD 83(2011) ELLIP HT-    64.515 (meters)        (08/29/25)   ADJUSTED
 DS4094* NAD 83(2011) EPOCH   -  2010.00
 DS4094* NAVD 88 ORTHO HEIGHT -    96.85  (meters)      317.7   (feet) GPS OBS
 DS4094  ______________________________________________________________________
 DS4094  GEOID HEIGHT    -        -32.335 (meters)                     GEOID18
 DS4094  NAD 83(2011) X  -  1,137,295.491 (meters)                     COMP
 DS4094  NAD 83(2011) Y  - -4,792,194.582 (meters)                     COMP
 DS4094  NAD 83(2011) Z  -  4,038,928.658 (meters)                     COMP
 DS4094  LAPLACE CORR    -         -2.97  (seconds)                    DEFLEC18
 DS4094
 DS4094  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4094  Standards:
 DS4094         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4094            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4094  -------------------------------------------------------------------
 DS4094  NETWORK    0.91   1.94           0.38   0.36   0.99     -0.06875428
 DS4094  -------------------------------------------------------------------
 DS4094  Click here for local accuracies and other accuracy information.
 DS4094
 DS4094.The horizontal coordinates were established by GPS observations
 DS4094.and adjusted by the MD DOT HIGHWAY ADMIN in August 2025.
 DS4094
 DS4094.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4094.frame has been affixed to the stable North American tectonic plate 
 DS4094
 DS4094.The horizontal coordinates are valid at the epoch date displayed above
 DS4094.which is a decimal equivalence of Year/Month/Day.
 DS4094
 DS4094.The orthometric height was determined by GPS observations and a
 DS4094.high-resolution geoid model using precise GPS observation and
 DS4094.processing techniques.
 DS4094
 DS4094.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4094.GEOID18 height accuracy estimate available here.
 DS4094
 DS4094.Click photographs - Photos may exist for this station.
 DS4094
 DS4094.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4094
 DS4094.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4094
 DS4094.The ellipsoidal height was determined by GPS observations
 DS4094.and is referenced to NAD 83.
 DS4094
 DS4094. The following values were computed from the NAD 83(2011) position.
 DS4094
 DS4094;                    North         East     Units Scale Factor Converg.
 DS4094;SPC MD       -   208,219.073   430,137.790   MT  1.00001736   +0 13 12.2
 DS4094;SPC MD       -   683,132.08  1,411,210.40   sFT  1.00001736   +0 13 12.2
 DS4094;UTM  18      - 4,378,207.880   358,266.673   MT  0.99984733   -1 03 00.9
 DS4094
 DS4094!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4094!SPC MD       -   0.99998988  x   1.00001736  =   1.00000724
 DS4094!UTM  18      -   0.99998988  x   0.99984733  =   0.99983721
 DS4094
 DS4094_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5826678207(NAD 83)
 DS4094
 DS4094                          SUPERSEDED SURVEY CONTROL
 DS4094
 DS4094.No superseded survey control is available for this station.
 DS4094
 DS4094_MARKER: DD = SURVEY DISK
 DS4094_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS4094_STAMPING: BELFAST 1973
 DS4094_MARK LOGO: MDBCSM
 DS4094_PROJECTION: FLUSH
 DS4094_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS4094+STABILITY: SURFACE MOTION
 DS4094_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4094+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2024
 DS4094
 DS4094  HISTORY     - Date     Condition        Report By
 DS4094  HISTORY     - 19730101 MONUMENTED       MDBCSM
 DS4094  HISTORY     - 20240829 GOOD             MDSHA
 DS4094
 DS4094                          STATION DESCRIPTION
 DS4094
 DS4094'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 DS4094'THE MARK IS LOCATED ABOUT 4.2 MI (6.8 KM) NORTH OF COCKEYSVILLE, 3.3
 DS4094'MI (5.3 KM) SOUTH-SOUTHEAST OF HEREFORD AND 2.5 MI (4.0 KM) NORTHWEST
 DS4094'OF PHOENIX.
 DS4094'
 DS4094'TO REACH THE MARK FROM THE INTERSECTION OF MD 45 (YORK ROAD) AND MD
 DS4094'138 (MONKTON ROAD) PROCEED SOUTH ON MD 45 FOR 5.42 KM (3.37 MI) TO THE
 DS4094'INTERSECTION WITH BELFAST ROAD TO THE MARK ON THE LEFT.
 DS4094'
 DS4094'THE MARK IS 43.6 FT (13.3 M) SOUTH OF THE CENTERLINE OF A GRAVEL
 DS4094'ENTRANCE FOR 15137 YORK ROAD, 33.5 FT (10.2 M) NORTH OF THE CENTERLINE
 DS4094'OF A GRAVEL ENTRANCE FOR 15129 YORK ROAD, 24.4 FT (7.4 M) EAST OF THE
 DS4094'CENTERLINE OF STATE ROUTE 45 YORK ROAD, 4 FT (1.2 M) SOUTH OF A
 DS4094'UTILITY POLE NUMBERED G AND E 509759 SET IN THE TOP OF A 8-IN (20 CM)
 DS4094'ROUND CONCRETE POST AND ABOUT 2 FT (0.6 M) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1842 ***********************************************************************
 HU1842  DESIGNATION -  BELL
 HU1842  PID         -  HU1842
 HU1842  STATE/COUNTY-  MD/SOMERSET
 HU1842  COUNTRY     -  US
 HU1842  USGS QUAD   -  KINGSTON (2016)
 HU1842
 HU1842                         *CURRENT SURVEY CONTROL
 HU1842  ______________________________________________________________________
 HU1842* NAD 83(1993) POSITION- 38 00 51.80707(N) 075 39 19.44584(W)   ADJUSTED
 HU1842* NAVD 88 ORTHO HEIGHT -     2.09  (+/-2cm)        6.9   (feet) VERTCON3
 HU1842  ______________________________________________________________________
 HU1842  GEOID HEIGHT    -        -36.262 (meters)                     GEOID18
 HU1842  LAPLACE CORR    -         -2.26  (seconds)                    DEFLEC18
 HU1842  HORZ ORDER      -  FIRST
 HU1842  VERT ORDER      -  THIRD ? (See Below)
 HU1842
 HU1842.The horizontal coordinates were established by classical geodetic methods
 HU1842.and adjusted by the National Geodetic Survey in November 1994.
 HU1842
 HU1842.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1842.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1842
 HU1842.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1842.GEOID18 height accuracy estimate available here.
 HU1842
 HU1842.The vertical order pertains to the NGVD 29 superseded value.
 HU1842
 HU1842.Click photographs - Photos may exist for this station.
 HU1842
 HU1842.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1842
 HU1842. The following values were computed from the NAD 83(1993) position.
 HU1842
 HU1842;                    North         East     Units Scale Factor Converg.
 HU1842;SPC MD       -    39,469.096   518,079.347   MT  1.00006195   +0 50 38.1
 HU1842;SPC MD       -   129,491.53  1,699,731.99   sFT  1.00006195   +0 50 38.1
 HU1842;SPC VA S     - 1,190,326.110 3,749,763.707   MT  1.00000906   +1 43 35.2
 HU1842;SPC VA S     - 3,905,261.58 12,302,349.76   sFT  1.00000906   +1 43 35.2
 HU1842;UTM  18      - 4,207,614.370   442,468.429   MT  0.99964076   -0 24 13.1
 HU1842
 HU1842!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1842!SPC MD       -   1.00000536  x   1.00006195  =   1.00006731
 HU1842!SPC VA S     -   1.00000536  x   1.00000906  =   1.00001442
 HU1842!UTM  18      -   1.00000536  x   0.99964076  =   0.99964612
 HU1842
 HU1842:                Primary Azimuth Mark                     Grid Az
 HU1842:SPC MD       -  BELL AZ MK                               126 56 10.6
 HU1842:SPC VA S     -  BELL AZ MK                               126 03 13.5
 HU1842:UTM  18      -  BELL AZ MK                               128 11 01.8
 HU1842
 HU1842_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4246807614(NAD 83)
 HU1842
 HU1842|---------------------------------------------------------------------|
 HU1842| PID    Reference Object                     Distance      Geod. Az  |
 HU1842|                                                           dddmmss.s |
 HU1842| HU2765 BELL RM 1                            43.193 METERS 12014     |
 HU1842| HU2739 BELL AZ MK 2                        APPROX. 0.7 KM 1273236.1 |
 HU1842| HU2776 BELL AZ MK                                         1274648.7 |
 HU1842| HU2775 BELL RM 2                            41.148 METERS 23912     |
 HU1842|---------------------------------------------------------------------|
 HU1842
 HU1842                          SUPERSEDED SURVEY CONTROL
 HU1842
 HU1842  NAD 83(1991)-  38 00 51.80671(N)    075 39 19.44561(W) AD(       ) 1
 HU1842  NAD 83(1986)-  38 00 51.80581(N)    075 39 19.47678(W) AD(       ) 1
 HU1842  NAD 27      -  38 00 51.36100(N)    075 39 20.73600(W) AD(       ) 1
 HU1842  NGVD 29               2.34   (m)            7.7    (f) LEVELING    3  
 HU1842
 HU1842.Superseded values are not recommended for survey control.
 HU1842
 HU1842.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1842.See file dsdata.pdf to determine how the superseded data were derived.
 HU1842
 HU1842_MARKER: DS = TRIANGULATION STATION DISK
 HU1842_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1842_STAMPING: BELL 1942
 HU1842_MARK LOGO: CGS
 HU1842_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1842_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1842+STABILITY: SURFACE MOTION
 HU1842_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU1842+SATELLITE: SATELLITE OBSERVATIONS - October 13, 1988
 HU1842
 HU1842  HISTORY     - Date     Condition        Report By
 HU1842  HISTORY     - 1942     MONUMENTED       CGS
 HU1842  HISTORY     - 1942     GOOD             CGS
 HU1842  HISTORY     - 1984     GOOD             MDDNR
 HU1842  HISTORY     - 19881013 GOOD             NGS
 HU1842
 HU1842                          STATION DESCRIPTION
 HU1842
 HU1842'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU1842'STATION IS LOCATED ABOUT 6 MILES (AIR LINE) SW OF POCOMOKE CITY
 HU1842'ON LAND OWNED BY O.A. BELL.  IT IS ON A TRIANGULAR PLOT OF GROUND
 HU1842'FORMED BY 3 ROADS.  IT IS 33 FEET SW OF ROAD LEADING TO THE HOUSE,
 HU1842'45 FEET N OF THE CENTER OF THE MAIN ROAD, 59 FEET SE OF A POWER
 HU1842'LINE POLE.  IT IS STAMPED BELL 1942 AND PROJECTS 5 INCHES.
 HU1842'
 HU1842'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HU1842'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HU1842'
 HU1842'REFERENCE MARK NO.1 IS SE OF THE STATION, 55 FEET N OF A 40-INCH
 HU1842'CEDAR TREE, 30 FEET S OF A T-ROAD INTERSECTION.  IT IS STAMPED
 HU1842'BELL NO.1 1942 AND PROJECTS 6 INCHES.
 HU1842'
 HU1842'REFERENCE MARK NO.2 IS SW OF THE STATION, 17 FEET S OF THE CENTER
 HU1842'OF A SAND ROAD, IN AN OLD FENCE LINE, WITNESSED BY A 4- BY 4-INCH
 HU1842'WHITE POST AND IS STAMPED BELL NO.2 1942 AND PROJECTS 5 INCHES.
 HU1842'
 HU1842'THE AZIMUTH MARK IS 0.4 MILE NE OF THE STATION, 25 FEET NE OF
 HU1842'THE CENTER OF A SANDY ROAD, 5 FEET NW OF A SMALL DRAINAGE
 HU1842'DITCH.  WITNESSED BY A 4- BY 4-INCH WHITE POST AND IS STAMPED
 HU1842'BELL 1942 AND PROJECTS 8 INCHES.
 HU1842'
 HU1842'TO REACH THE STATION FROM THE POST OFFICE IN POCOMOKE CITY,
 HU1842'FOLLOW U.S. HIGHWAY 13 N FOR 1.9 MILES TO A DIRT ROAD LEFT, TURN
 HU1842'LEFT, AND GO 0.6 MILE TO A FORKS, TAKE LEFT FORK AND GO 0.85 MILE,
 HU1842'TURN RIGHT AND GO 0.25 MILE TO A FORKS, TAKE LEFT FORK AND GO 2.2
 HU1842'MILES, BEAR LEFT AND GO 0.95 MILE, KEEP LEFT AND GO 0.45 MILE
 HU1842'TO THE SMALL VILLAGE OF REHOBETH, TAKE THE RIGHT FORK AND GO
 HU1842'0.25 MILE TO A CHURCH, TAKE THE LEFT FORK AND GO 1.0 MILE, TAKE
 HU1842'LEFT FORK AND GO 1.3 MILES TO O.A. BELLS HOUSE AND STATION ON
 HU1842'THE LEFT.
 HU1842'
 HU1842'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT COLBOURNE.
 HU1842'
 HU1842'A 103-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SMULLEN.
 HU1842'
 HU1842'A 103-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT HOLT.
 HU1842
 HU1842                          STATION RECOVERY (1942)
 HU1842
 HU1842'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HU1842'RECOVERED IN GOOD CONDITION.
 HU1842
 HU1842                          STATION RECOVERY (1984)
 HU1842
 HU1842'RECOVERY NOTE BY MD DEPT OF NAT RES 1984 (LW)
 HU1842'BELL 1942 IN GOOD CONDITION, IN WOODS BETWEEN SHELLTOWN RD AND A
 HU1842'DIRT ROAD, 1 FOOT S OF A W.P.
 HU1842'
 HU1842'BELL NO 1 1942 IN GOOD CONDITION ON TURN OF ROAD (PAVED) PROJECTS
 HU1842'24 INCHES.
 HU1842
 HU1842                          STATION RECOVERY (1988)
 HU1842
 HU1842'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HU1842'THE STATION AND REFERENCE MARK 1 WERE RECOVERED AND FOUND IN GOOD
 HU1842'CONDITION.  REFERENCE MARK 2 AND THE AZIMUTH MARK WERE FOUND DESTROYED
 HU1842'AND THE DISKS WERE SALVAGED.  A NEW AZIMUTH MARK 2 WAS ESTABLISHED AT
 HU1842'THIS DATE.  A DIFFERENCE IN DIRECTION AND DISTANCE OF -1 MINUTE 38
 HU1842'SECONDS AND -0.012 METER WAS NOTED TO REFERENCE MARK 1.  THE REASON
 HU1842'FOR THE DISCREPANCY COULD NOT BE DETERMINED.
 HU1842'THE MARK IS LOCATED ABOUT 10.15 KM (6.30 MI) SOUTHWEST OF POCOMOKE AND
 HU1842'2.9 KM (1.80 MI) SOUTH-SOUTHEAST OF REHOBETH.  OWNERSHIP--KENNETH
 HU1842'BELL, RD 1 BOX 152, MARION, MD. 21838.  PHONE (301) 957-3469.
 HU1842'TO REACH THE MARK FROM THE INTERSECTION OF U.S. HIGHWAY 13 AND STATE
 HU1842'HIGHWAY 667, GO SOUTHWEST ON STATE HIGHWAY 667 FOR 7.7 KM (4.80 MI) TO
 HU1842'A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTH ON VESSEY ROAD FOR 0.7 KM
 HU1842'(0.45 MI) TO A FORK.  BEAR RIGHT AND GO WEST ON VESSEY ROAD FOR 0.4 KM
 HU1842'(0.25 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTH ON SHELLTOWN
 HU1842'ROAD FOR 1.7 KM (1.05 MI) TO A FORK.  BEAR LEFT AND GO SOUTHWEST ON
 HU1842'SHELLTOWN ROAD FOR 2.1 KM (1.30 MI) TO A SHARP CURVE TO THE RIGHT AND
 HU1842'THE MARK ON THE LEFT IN A POINT OF WOODS.
 HU1842'THE MARK IS SET IN THE TOP OF A 0.3 M (1.0 FT) SQUARE CONCRETE POST
 HU1842'PROJECTING 0.15 M (0.5 FT) ABOVE THE GROUND.  IT IS 36.0 M (118.1 FT)
 HU1842'WEST-NORTHWEST OF A POWER TRANSFORMER BOX, 21.1 M (69.2 FT) NORTHWEST
 HU1842'OF C AND P TELEPHONE PEDESTAL NUMBER 163, 13.1 M (43.0 FT) NORTH OF
 HU1842'THE CENTERLINE OF SHELLTOWN ROAD, 6.4 M (21.0 FT) SOUTHWEST OF THE
 HU1842'CENTERLINE OF A NORTHWEST-SOUTHEAST DITCH AND 0.8 M (2.6 FT) SOUTH OF
 HU1842'A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6285 ***********************************************************************
 HV6285  DESIGNATION -  BELL
 HV6285  PID         -  HV6285
 HV6285  STATE/COUNTY-  MD/QUEEN ANNES
 HV6285  COUNTRY     -  US
 HV6285  USGS QUAD   -  CLAIBORNE (2016)
 HV6285
 HV6285                         *CURRENT SURVEY CONTROL
 HV6285  ______________________________________________________________________
 HV6285* NAD 83(1991) POSITION- 38 50 11.75132(N) 076 22 07.86586(W)   ADJUSTED
 HV6285* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6285  ______________________________________________________________________
 HV6285  GEOID HEIGHT    -        -33.829 (meters)                     GEOID18
 HV6285  LAPLACE CORR    -         -4.89  (seconds)                    DEFLEC18
 HV6285  HORZ ORDER      -  FIRST
 HV6285
 HV6285.The horizontal coordinates were established by classical geodetic methods
 HV6285.and adjusted by the National Geodetic Survey in January 1992.
 HV6285
 HV6285.The orthometric height was scaled from a topographic map.
 HV6285
 HV6285.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6285.GEOID18 height accuracy estimate available here.
 HV6285
 HV6285.Click photographs - Photos may exist for this station.
 HV6285
 HV6285.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6285
 HV6285. The following values were computed from the NAD 83(1991) position.
 HV6285
 HV6285;                    North         East     Units Scale Factor Converg.
 HV6285;SPC MD       -   130,056.590   454,796.473   MT  0.99995008   +0 23 46.1
 HV6285;SPC MD       -   426,694.00  1,492,111.43   sFT  0.99995008   +0 23 46.1
 HV6285;UTM  18      - 4,299,533.969   381,194.152   MT  0.99977381   -0 51 30.6
 HV6285
 HV6285!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6285!SPC MD       -   1.00000519  x   0.99995008  =   0.99995527
 HV6285!UTM  18      -   1.00000519  x   0.99977381  =   0.99977900
 HV6285
 HV6285:                Primary Azimuth Mark                     Grid Az
 HV6285:SPC MD       -  BELL RM 3                                328 39 07.3
 HV6285:UTM  18      -  BELL RM 3                                329 54 24.0
 HV6285
 HV6285_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8119499533(NAD 83)
 HV6285
 HV6285|---------------------------------------------------------------------|
 HV6285| PID    Reference Object                     Distance      Geod. Az  |
 HV6285|                                                           dddmmss.s |
 HV6285| AI4153 BELL RM 1                            27.083 METERS 04527     |
 HV6285| CX2078 BELL RM 2                            24.538 METERS 30303     |
 HV6285| HV6305 THOMAS PT SHOAL LH                  APPROX. 9.0 KM 3195829.3 |
 HV6285| CX2079 BELL RM 3                                          3290253.4 |
 HV6285|---------------------------------------------------------------------|
 HV6285
 HV6285                          SUPERSEDED SURVEY CONTROL
 HV6285
 HV6285  NAD 83(1986)-  38 50 11.74778(N)    076 22 07.87883(W) AD(       ) 1
 HV6285  NAD 27      -  38 50 11.32300(N)    076 22 09.04600(W) AD(       ) 1
 HV6285
 HV6285.Superseded values are not recommended for survey control.
 HV6285
 HV6285.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6285.See file dsdata.pdf to determine how the superseded data were derived.
 HV6285
 HV6285_MARKER: DS = TRIANGULATION STATION DISK
 HV6285_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6285_STAMPING: BELL 1933
 HV6285_MARK LOGO: CGS
 HV6285_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6285
 HV6285  HISTORY     - Date     Condition        Report By
 HV6285  HISTORY     - 1933     MONUMENTED       CGS
 HV6285  HISTORY     - 1934     GOOD             CGS
 HV6285  HISTORY     - 1940     GOOD             CGS
 HV6285  HISTORY     - 1960     SEE DESCRIPTION  CGS
 HV6285  HISTORY     - 1973     MARK NOT FOUND   MDDNR
 HV6285  HISTORY     - 19950628 MARK NOT FOUND   USPSQD
 HV6285
 HV6285                          STATION DESCRIPTION
 HV6285
 HV6285'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (ERM)
 HV6285'ON MOST SOUTHERLY PART OF KENT ISLAND ON KENT POINT, ON HIGHEST
 HV6285'PART OF POINT 115 METERS N OF SHORE LINE, IN GRASS AND SCRUB PINE.
 HV6285'
 HV6285'STATION MARK IS STANDARD BRONZE DISK IN TILE.
 HV6285'
 HV6285'REFERENCE MARKS NO.1 AND NO.2 ARE STANDARD BRONZE DISKS SET IN
 HV6285'CONCRETE.
 HV6285'
 HV6285'REFERENCE MARK NO.1 IS NORTHWARD AND REFERENCE MARK NO.2
 HV6285'TOWARD BANK.
 HV6285'
 HV6285'SHORE LINE IS CONSTANTLY WEARING BACK ON ALL SIDES.  THERE IS
 HV6285'A FRINGE OF TREES ALONG EXTREME END OF POINT.
 HV6285'
 HV6285'HEIGHT OF SIGNAL ABOVE STATION MARK - 3.1 METERS.
 HV6285
 HV6285                          STATION RECOVERY (1934)
 HV6285
 HV6285'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6285'LOCATED ABOUT 11 MILES BY ROAD S OF STEVENSVILLE NEAR EXTREME
 HV6285'SOUTHERN END OF KENT ISLAND, ON PROPERTY OWNED BY MR. CLARENCE
 HV6285'SOPER, ON HIGHEST GROUND IN VICINITY, ABOUT 150 METERS (492 FEET)
 HV6285'N OF EXTREME SOUTHERN TIP OF KENT ISLAND, ABOUT 115 METERS
 HV6285'(377 FEET) E OF SHORE LINE, 1/4 MILE SE OF OLD BARN AND GRANARY,
 HV6285'AND PROJECTS ABOUT 4 INCHES ABOVE GROUND.
 HV6285'
 HV6285'STATION AND 2 REFERENCE MARKS FOUND IN GOOD CONDITION, AND AZIMUTH
 HV6285'MARK ESTABLISHED, A STANDARD BRONZE DISK SET IN CONCRETE.
 HV6285'
 HV6285'REFERENCE MARK NO.1 IS 27.083 METERS (88.85 FEET) NE OF
 HV6285'STATION, AND PROJECTS ABOUT 4 INCHES.
 HV6285'
 HV6285'REFERENCE MARK NO.2 IS 24.520 METERS (80.45 FEET) NW OF
 HV6285'STATION, AND PROJECTS ABOUT 4 INCHES.
 HV6285'
 HV6285'REFERENCE MARK NO.3, THE AZIMUTH MARK, IS 1/4 MILE NW OF
 HV6285'STATION, 12 METERS (39 FEET) SE OF OLD BARN, 35 METERS (115 FEET)
 HV6285'W OF GRANARY, 2 METERS (66 FEET) S OF FENCE CORNER, AND 1 METER
 HV6285'(3.3 FEET) E OF FENCE LINE.  MARK PROJECTS ABOUT 6 INCHES.  NO
 HV6285'CLEARING NECESSARY.
 HV6285'
 HV6285'BLOODY POINT BAR LIGHTHOUSE IS VISIBLE FROM GROUND AT STATION,
 HV6285'AND WILL SERVE AS ADDITIONAL AZIMUTH MARK.
 HV6285'
 HV6285'STATION, AZIMUTH, AND REFERENCE MARK NO.3 WERE OBSERVED WITH FOUR
 HV6285'POSITIONS OF CIRCLE.
 HV6285'
 HV6285'A 64-FOOT TOWER CLEARED ALL LINES REQUIRED.
 HV6285
 HV6285                          STATION RECOVERY (1940)
 HV6285
 HV6285'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6285'STATION AND REFERENCE MARKS RECOVERED AS DESCRIBED.  DESCRIPTION
 HV6285'ADEQUATE, EXCEPT THAT AREA AROUND MARK IS NOW GROWN UP WITH
 HV6285'CONSIDERABLE SCRUB PINE, MAKING IT IMPOSSIBLE TO SIGHT OTHER
 HV6285'STATIONS WITHOUT A TOWER OR CLEARING OF BRUSH.  IT IS AT KENT
 HV6285'ISLAND, ON KENT POINT.
 HV6285'
 HV6285'STATION MARK IS FLUSH WITH THE GROUND.
 HV6285'
 HV6285'REFERENCE MARK NO.2 IS 24.520 METERS (80.45 FEET) NW OF THE
 HV6285'STATION, AND PROJECTS ABOUT 4 INCHES.
 HV6285'
 HV6285'REFERENCE MARK NO.3, THE AZIMUTH MARK, IS 1/4 MILE NW OF THE
 HV6285'STATION, 12 METERS (39 FEET) SE OF THE OLD BARN, 35 METERS (115
 HV6285'FEET) W OF THE GRAINERY, 2 METERS (6.6 FEET) S OF FENCE CORNER,
 HV6285'AND 1 METER (3.3 FEET) E OF FENCE LINE.  THE MARK PROJECTS ABOUT
 HV6285'6 INCHES.  NO CLEARING NECESSARY.
 HV6285'
 HV6285'BLOODY POINT BAR LIGHTHOUSE IS VISIBLE FROM THE GROUND AT THE
 HV6285'STATION AND WILL SERVE AS AN ADDITIONAL AZIMUTH MARK.  IT AND
 HV6285'THE AZIMUTH MARK, REFERENCE MARK NO.3, WERE OBSERVED WITH 4
 HV6285'POSITIONS OF THE CIRCLE.
 HV6285'
 HV6285'A 64-FOOT TOWER CLEARED ALL LINES REQUIRED.
 HV6285
 HV6285                          STATION RECOVERY (1960)
 HV6285
 HV6285'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6285'STATION MARK AND R.M. NO.2 WERE FOUND DESTROYED, THE DISKS WERE
 HV6285'REMOVED BY THIS PARTY.
 HV6285'
 HV6285'R.M. NO. 1 WAS FOUND IN GOOD CONDITION.  IT IS 81 FT NORTH OF
 HV6285'ROAD LEADING TO THE POINT, 83 PACES WEST OF EAST BANK, 6.0 FT
 HV6285'EAST OF A 10 INCH PINE (BLAZED), 3.9 FT SOUTH OF A 6 INCH PINE
 HV6285'(BLAZED), AND 3.5 FT NW OF A 14 INCH PINE (BLAZED).
 HV6285
 HV6285                          STATION RECOVERY (1973)
 HV6285
 HV6285'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV6285'BELL 1 1933 GOOD
 HV6285'
 HV6285'RECOVERED AS DESCRIBED WITH WITNESS POST AND SIGN PLACED AT
 HV6285'S EDGE OF MONUMENT.
 HV6285
 HV6285                          STATION RECOVERY (1995)
 HV6285
 HV6285'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV6285'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4633 ***********************************************************************
 AB4633  DESIGNATION -  BELL
 AB4633  PID         -  AB4633
 AB4633  STATE/COUNTY-  MD/CARROLL
 AB4633  COUNTRY     -  US
 AB4633  USGS QUAD   -  NEW WINDSOR (2016)
 AB4633
 AB4633                         *CURRENT SURVEY CONTROL
 AB4633  ______________________________________________________________________
 AB4633* NAD 83(2011) POSITION- 39 34 28.93140(N) 077 02 09.56801(W)   ADJUSTED
 AB4633* NAD 83(2011) ELLIP HT-   172.743 (meters)        (06/27/12)   ADJUSTED
 AB4633* NAD 83(2011) EPOCH   -  2010.00
 AB4633* NAVD 88 ORTHO HEIGHT -   205.1   (meters)      673.    (feet) GPS OBS
 AB4633  ______________________________________________________________________
 AB4633  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4633  GEOID HEIGHT    -        -32.332 (meters)                     GEOID99
 AB4633  GEOID HEIGHT    -        -32.324 (meters)                     GEOID18
 AB4633  NAD 83(2011) X  -  1,104,433.926 (meters)                     COMP
 AB4633  NAD 83(2011) Y  - -4,797,576.276 (meters)                     COMP
 AB4633  NAD 83(2011) Z  -  4,041,809.966 (meters)                     COMP
 AB4633  LAPLACE CORR    -          4.43  (seconds)                    DEFLEC18
 AB4633
 AB4633  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4633  Standards:
 AB4633         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4633            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4633  -------------------------------------------------------------------
 AB4633  NETWORK    1.03   2.51           0.46   0.37   1.28     -0.00689829
 AB4633  -------------------------------------------------------------------
 AB4633  Click here for local accuracies and other accuracy information.
 AB4633
 AB4633.The horizontal coordinates were established by GPS observations
 AB4633.and adjusted by the National Geodetic Survey in June 2012.
 AB4633
 AB4633.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4633.been affixed to the stable North American tectonic plate. See 
 AB4633.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4633
 AB4633.The horizontal coordinates are valid at the epoch date displayed above
 AB4633.which is a decimal equivalence of Year/Month/Day.
 AB4633
 AB4633.The orthometric height was determined by GPS observations and a
 AB4633.high-resolution geoid model.
 AB4633
 AB4633.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4633.GEOID18 height accuracy estimate available here.
 AB4633
 AB4633.Click photographs - Photos may exist for this station.
 AB4633
 AB4633.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4633
 AB4633.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4633
 AB4633.The ellipsoidal height was determined by GPS observations
 AB4633.and is referenced to NAD 83.
 AB4633
 AB4633. The following values were computed from the NAD 83(2011) position.
 AB4633
 AB4633;                    North         East     Units Scale Factor Converg.
 AB4633;SPC MD       -   211,809.633   396,907.523   MT  1.00002419   -0 01 21.3
 AB4633;SPC MD       -   694,912.10  1,302,187.43   sFT  1.00002419   -0 01 21.3
 AB4633;UTM  18      - 4,382,535.054   325,128.023   MT  0.99997651   -1 17 50.7
 AB4633
 AB4633!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4633!SPC MD       -   0.99997290  x   1.00002419  =   0.99999709
 AB4633!UTM  18      -   0.99997290  x   0.99997651  =   0.99994941
 AB4633
 AB4633_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2512882535(NAD 83)
 AB4633
 AB4633                          SUPERSEDED SURVEY CONTROL
 AB4633
 AB4633  NAD 83(2007)-  39 34 28.93169(N)    077 02 09.56873(W) AD(2002.00) 0
 AB4633  ELLIP H (02/10/07)  172.765  (m)                       GP(2002.00)    
 AB4633  ELLIP H (08/30/02)  172.760  (m)                       GP(       ) 4 2
 AB4633  NAD 83(1991)-  39 34 28.93115(N)    077 02 09.56931(W) AD(       ) 1
 AB4633  ELLIP H (07/03/96)  172.694  (m)                       GP(       ) 1 1
 AB4633  NAVD 88 (07/03/96)  205.1    (m)  GEOID93  model used  GPS OBS        
 AB4633
 AB4633.Superseded values are not recommended for survey control.
 AB4633
 AB4633.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4633.See file dsdata.pdf to determine how the superseded data were derived.
 AB4633
 AB4633_MARKER: DD = SURVEY DISK
 AB4633_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4633_STAMPING: BELL 1995
 AB4633_MARK LOGO: MD-013
 AB4633_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4633_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4633+STABILITY: SURFACE MOTION
 AB4633_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4633+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4633
 AB4633  HISTORY     - Date     Condition        Report By
 AB4633  HISTORY     - 1995     MONUMENTED       MD-013
 AB4633
 AB4633                          STATION DESCRIPTION
 AB4633
 AB4633'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4633'STATION IS LOCATED ABOUT 2 MI (3.2 KM) WEST OF THE CENTER OF
 AB4633'WESTMINSTER AT THE WAKEFIELD VALLEY GULF CLUB. TO REACH THE STATION
 AB4633'FROM THE INTERSECTION OF MD ROUTE 31 (NEW WINDSOR ROAD) AND UNIONTOWN
 AB4633'ROAD GO WEST ON UNIONTOWN ROAD FOR 1.75 MI (2.82 KM) TO THE
 AB4633'INTERSECTION WITH BELL ROAD. TURN LEFT ON BELL ROAD AND GO SOUTH FOR
 AB4633'0.45 MI (0.72 KM) TO THE INTERSECTION WITH CHADWICK DRIVE AND THE
 AB4633'STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4633'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 36.0 FT
 AB4633'(11.0 M) SOUTHEAST OF THE CENTERLINE OF BELL ROAD, 17.7 FT (5.4 M)
 AB4633'SOUTHEAST OF A SPLIT RAIL FENCE, 73.2 FT (22.3 M) NORTHEAST OF
 AB4633'TELEPHONE PEDESTAL NO.177 AND 89.5 FT (27.3 M) NORTHEAST OF THE
 AB4633'CENTERLINE OF A PAVED DRIVEWAY LEADING TO HOUSE NO.187.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7978 ***********************************************************************
 AJ7978  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7978  DESIGNATION -  BELL
 AJ7978  PID         -  AJ7978
 AJ7978  STATE/COUNTY-  MD/BALTIMORE
 AJ7978  COUNTRY     -  US
 AJ7978  USGS QUAD   -  HEREFORD (2016)
 AJ7978
 AJ7978                         *CURRENT SURVEY CONTROL
 AJ7978  ______________________________________________________________________
 AJ7978* NAD 83(2011) POSITION- 39 32 57.82855(N) 076 40 02.89291(W)   ADJUSTED
 AJ7978* NAD 83(2011) ELLIP HT-    81.236 (meters)        (06/27/12)   ADJUSTED
 AJ7978* NAD 83(2011) EPOCH   -  2010.00
 AJ7978* NAVD 88 ORTHO HEIGHT -   113.549 (meters)      372.54  (feet) ADJUSTED
 AJ7978  ______________________________________________________________________
 AJ7978  GEOID HEIGHT    -        -32.303 (meters)                     GEOID18
 AJ7978  NAD 83(2011) X  -  1,135,664.817 (meters)                     COMP
 AJ7978  NAD 83(2011) Y  - -4,792,046.153 (meters)                     COMP
 AJ7978  NAD 83(2011) Z  -  4,039,585.568 (meters)                     COMP
 AJ7978  LAPLACE CORR    -         -3.10  (seconds)                    DEFLEC18
 AJ7978  DYNAMIC HEIGHT  -        113.491 (meters)      372.35  (feet) COMP
 AJ7978  MODELED GRAVITY -    980,119.3   (mgal)                       NAVD 88
 AJ7978
 AJ7978  VERT ORDER      -  SECOND    CLASS I
 AJ7978
 AJ7978  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7978  Standards:
 AJ7978         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7978            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7978  -------------------------------------------------------------------
 AJ7978  NETWORK    0.43   0.57           0.20   0.14   0.29      0.01713468
 AJ7978  -------------------------------------------------------------------
 AJ7978  Click here for local accuracies and other accuracy information.
 AJ7978
 AJ7978.The horizontal coordinates were established by GPS observations
 AJ7978.and adjusted by the National Geodetic Survey in June 2012.
 AJ7978
 AJ7978.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7978.been affixed to the stable North American tectonic plate. See 
 AJ7978.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7978
 AJ7978.The horizontal coordinates are valid at the epoch date displayed above
 AJ7978.which is a decimal equivalence of Year/Month/Day.
 AJ7978
 AJ7978.The orthometric height was determined by differential leveling and
 AJ7978.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7978.in November 2003.
 AJ7978
 AJ7978.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7978.GEOID18 height accuracy estimate available here.
 AJ7978
 AJ7978.Click photographs - Photos may exist for this station.
 AJ7978
 AJ7978.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7978
 AJ7978.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7978
 AJ7978.The ellipsoidal height was determined by GPS observations
 AJ7978.and is referenced to NAD 83.
 AJ7978
 AJ7978.The dynamic height is computed by dividing the NAVD 88
 AJ7978.geopotential number by the normal gravity value computed on the
 AJ7978.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7978.degrees latitude (g = 980.6199 gals.).
 AJ7978
 AJ7978.The modeled gravity was interpolated from observed gravity values.
 AJ7978
 AJ7978. The following values were computed from the NAD 83(2011) position.
 AJ7978
 AJ7978;                    North         East     Units Scale Factor Converg.
 AJ7978;SPC MD       -   209,051.351   428,582.241   MT  1.00001890   +0 12 31.3
 AJ7978;SPC MD       -   685,862.64  1,406,106.90   sFT  1.00001890   +0 12 31.3
 AJ7978;UTM  18      - 4,379,074.297   356,730.218   MT  0.99985272   -1 03 43.0
 AJ7978
 AJ7978!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7978!SPC MD       -   0.99998726  x   1.00001890  =   1.00000616
 AJ7978!UTM  18      -   0.99998726  x   0.99985272  =   0.99983998
 AJ7978
 AJ7978_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5673079074(NAD 83)
 AJ7978
 AJ7978                          SUPERSEDED SURVEY CONTROL
 AJ7978
 AJ7978  NAD 83(2007)-  39 32 57.82877(N)    076 40 02.89365(W) AD(2002.00) 0
 AJ7978  ELLIP H (02/10/07)   81.251  (m)                       GP(2002.00)    
 AJ7978  NAD 83(1991)-  39 32 57.82881(N)    076 40 02.89388(W) AD(       ) A
 AJ7978  ELLIP H (02/12/02)   81.251  (m)                       GP(       ) 4 1
 AJ7978  NAVD 88 (02/12/02)  113.5    (m)  GEOID99  model used  GPS OBS        
 AJ7978
 AJ7978.Superseded values are not recommended for survey control.
 AJ7978
 AJ7978.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7978.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7978
 AJ7978_MARKER: DD = SURVEY DISK
 AJ7978_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7978_STAMPING: BELL 1991
 AJ7978_MARK LOGO: MDSHA
 AJ7978_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7978+STABILITY: SURFACE MOTION
 AJ7978_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7978+SATELLITE: SATELLITE OBSERVATIONS - August 01, 2017
 AJ7978
 AJ7978  HISTORY     - Date     Condition        Report By
 AJ7978  HISTORY     - 1991     MONUMENTED       MDSHA
 AJ7978  HISTORY     - 20000327 GOOD             MDSHA
 AJ7978  HISTORY     - 20010827 GOOD             MDSHA
 AJ7978  HISTORY     - 20050409 GOOD             DEWDAV
 AJ7978  HISTORY     - 20070126 GOOD             JMTMD
 AJ7978  HISTORY     - 20070319 GOOD             MD-005
 AJ7978  HISTORY     - 20090520 GOOD             JMTMD
 AJ7978  HISTORY     - 20110311 GOOD             INDIV
 AJ7978  HISTORY     - 20170801 GOOD             NGS
 AJ7978
 AJ7978                          STATION DESCRIPTION
 AJ7978
 AJ7978'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7978'THE STATION IS LOCATED ABOUT 8.0 MILES (12.9 KM) NORTH OF TIMONIUM,
 AJ7978'AND 3.9 MILES (6.3 KM) NORTH OF HUNT VALLEY AND 4.0 MILES (6.4 KM)
 AJ7978'EAST OF BUTLER, IN THE NORTHWEST QUADRANT OF THE INTERSECTION OF
 AJ7978'INTERSTATE HIGHWAY 83 AND BELFAST ROAD.  OWNERSHIP- HIGHWAY
 AJ7978'RIGHT-OF-WAY.  TO REACH THE STATION FROM THE INTERSECTION OF
 AJ7978'INTERSTATE 695 AND INTERSTATE 83, GO NORTH ALONG INTERSTATE 83 FOR 9.0
 AJ7978'MILES (14.5 KM) TO BELFAST ROAD AND THE STATION IN THE NORTHWEST
 AJ7978'QUADRANT.  THE STATION IS A STANDARD MARYLAND STATE HIGHWAY SURVEY
 AJ7978'DISK SET IN THE TOP OF A 0.75 FOOT (22.86 CM) CONCRETE MONUMENT WHICH
 AJ7978'IS FLUSH WITH THE GROUND.  IT IS 384.0 FEET (117.0 M) NORTH OF THE
 AJ7978'NORTH END OF THE BRIDGE OVER BELFAST ROAD ALONG INTERSTATE 83, 210.0
 AJ7978'FEET (64.0 M) WEST OF THE CENTER OF THE MEDIAN OF INTERSTATE 83, 46.0
 AJ7978'FEET (14.0 M) SOUTH OF THE FACE OF THE SOUTH CURB OF THE RAMP FROM
 AJ7978'BELFAST ROAD TO THE SOUTH BOUND LANES OF THE HIGHWAY, AND 112.5 FEET
 AJ7978'(34.3 M) WEST OF THE END OF THE SOUTH CONCRETE CURB OF THE RAMP FROM
 AJ7978'BELFAST ROAD TO SOUTH BOUND INTERSTATE 83.
 AJ7978
 AJ7978                          STATION RECOVERY (2001)
 AJ7978
 AJ7978'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ7978'RECOVERED AS DESCRIBED.
 AJ7978
 AJ7978                          STATION RECOVERY (2005)
 AJ7978
 AJ7978'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (JY)
 AJ7978'RECOVERED IN GOOD CONDITION.
 AJ7978
 AJ7978                          STATION RECOVERY (2007)
 AJ7978
 AJ7978'RECOVERY NOTE BY JMT ENGINEERING 2007 (CJH)
 AJ7978'RECOVERED
 AJ7978
 AJ7978                          STATION RECOVERY (2007)
 AJ7978
 AJ7978'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 AJ7978'RECOVERED IN GOOD CONDITION.
 AJ7978
 AJ7978                          STATION RECOVERY (2009)
 AJ7978
 AJ7978'RECOVERY NOTE BY JMT ENGINEERING 2009 (JAF)
 AJ7978'ACCESS FROM I-83 SOUTH EXIT 31 (SB RAMP FROM BELLFAST RD)
 AJ7978'RTK-NET CHECK (N+.05 E-.02 EL.+0.05)
 AJ7978
 AJ7978                          STATION RECOVERY (2011)
 AJ7978
 AJ7978'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 AJ7978'RECOVERED AS DESCRIBED DESCRIPTION IS ADEQUATE AND USED FOR GPS -
 AJ7978'JFSIII
 AJ7978
 AJ7978                          STATION RECOVERY (2017)
 AJ7978
 AJ7978'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (GS)
 AJ7978'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4631 ***********************************************************************
 AB4631  DESIGNATION -  BELL AZ MK
 AB4631  PID         -  AB4631
 AB4631  STATE/COUNTY-  MD/CARROLL
 AB4631  COUNTRY     -  US
 AB4631  USGS QUAD   -  NEW WINDSOR (2016)
 AB4631
 AB4631                         *CURRENT SURVEY CONTROL
 AB4631  ______________________________________________________________________
 AB4631* NAD 83(2011) POSITION- 39 33 51.28003(N) 077 01 30.71604(W)   ADJUSTED
 AB4631* NAD 83(2011) ELLIP HT-   166.136 (meters)        (06/27/12)   ADJUSTED
 AB4631* NAD 83(2011) EPOCH   -  2010.00
 AB4631* NAVD 88 ORTHO HEIGHT -   198.4   (meters)      651.    (feet) GPS OBS
 AB4631  ______________________________________________________________________
 AB4631  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4631  GEOID HEIGHT    -        -32.279 (meters)                     GEOID99
 AB4631  GEOID HEIGHT    -        -32.268 (meters)                     GEOID18
 AB4631  NAD 83(2011) X  -  1,105,502.516 (meters)                     COMP
 AB4631  NAD 83(2011) Y  - -4,798,084.027 (meters)                     COMP
 AB4631  NAD 83(2011) Z  -  4,040,910.624 (meters)                     COMP
 AB4631  LAPLACE CORR    -          4.25  (seconds)                    DEFLEC18
 AB4631
 AB4631  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4631  Standards:
 AB4631         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4631            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4631  -------------------------------------------------------------------
 AB4631  NETWORK    1.11   2.82           0.49   0.41   1.44     -0.04326831
 AB4631  -------------------------------------------------------------------
 AB4631  Click here for local accuracies and other accuracy information.
 AB4631
 AB4631.The horizontal coordinates were established by GPS observations
 AB4631.and adjusted by the National Geodetic Survey in June 2012.
 AB4631
 AB4631.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4631.been affixed to the stable North American tectonic plate. See 
 AB4631.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4631
 AB4631.The horizontal coordinates are valid at the epoch date displayed above
 AB4631.which is a decimal equivalence of Year/Month/Day.
 AB4631
 AB4631.The orthometric height was determined by GPS observations and a
 AB4631.high-resolution geoid model.
 AB4631
 AB4631.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4631.GEOID18 height accuracy estimate available here.
 AB4631
 AB4631.Click photographs - Photos may exist for this station.
 AB4631
 AB4631.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4631
 AB4631.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4631
 AB4631.The ellipsoidal height was determined by GPS observations
 AB4631.and is referenced to NAD 83.
 AB4631
 AB4631. The following values were computed from the NAD 83(2011) position.
 AB4631
 AB4631;                    North         East     Units Scale Factor Converg.
 AB4631;SPC MD       -   210,648.102   397,834.506   MT  1.00002198   -0 00 56.9
 AB4631;SPC MD       -   691,101.31  1,305,228.71   sFT  1.00002198   -0 00 56.9
 AB4631;UTM  18      - 4,381,353.248   326,028.895   MT  0.99997264   -1 17 24.9
 AB4631
 AB4631!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4631!SPC MD       -   0.99997394  x   1.00002198  =   0.99999592
 AB4631!UTM  18      -   0.99997394  x   0.99997264  =   0.99994658
 AB4631
 AB4631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2602881353(NAD 83)
 AB4631
 AB4631                          SUPERSEDED SURVEY CONTROL
 AB4631
 AB4631  NAD 83(2007)-  39 33 51.28032(N)    077 01 30.71677(W) AD(2002.00) 0
 AB4631  ELLIP H (02/10/07)  166.156  (m)                       GP(2002.00)    
 AB4631  ELLIP H (08/30/02)  166.150  (m)                       GP(       ) 4 2
 AB4631  NAD 83(1991)-  39 33 51.27969(N)    077 01 30.71728(W) AD(       ) 1
 AB4631  ELLIP H (07/03/96)  166.080  (m)                       GP(       ) 1 1
 AB4631  NAVD 88 (07/03/96)  198.4    (m)  GEOID93  model used  GPS OBS        
 AB4631
 AB4631.Superseded values are not recommended for survey control.
 AB4631
 AB4631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4631.See file dsdata.pdf to determine how the superseded data were derived.
 AB4631
 AB4631_MARKER: DD = SURVEY DISK
 AB4631_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4631_STAMPING: BELL AZIMUTH 1995
 AB4631_MARK LOGO: MD-013
 AB4631_PROJECTION: RECESSED 3 CENTIMETERS
 AB4631_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4631_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4631+STABILITY: SURFACE MOTION
 AB4631_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4631+SATELLITE: SATELLITE OBSERVATIONS - September 18, 2023
 AB4631
 AB4631  HISTORY     - Date     Condition        Report By
 AB4631  HISTORY     - 1995     MONUMENTED       MD-013
 AB4631  HISTORY     - 20140517 GOOD             RODCON
 AB4631  HISTORY     - 20230918 GOOD             MDSHA
 AB4631
 AB4631                          STATION DESCRIPTION
 AB4631
 AB4631'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4631'STATION IS LOCATED ABOUT 2 MI (3.2 KM) FROM THE CENTER OF WESTMINSER
 AB4631'AND ABOUT 4.5 MI (7.2 KM) NORTHEAST OF NEW WINDSOR AT THE AVONDALE RUN
 AB4631'SUBDIVISION IN WESTMINSTER. TO REACH THE STATION FROM THE INTERSECTION
 AB4631'OF MD ROUTE 140 (BALTIMORE BLVD) AND MD ROUTE 31 (NEW WINDSOR ROAD) IN
 AB4631'WESTMINSTER GO SOUTH ON MD ROUTE 31 FOR 2.05 MI (3.30 KM) TO THE
 AB4631'INTERSECTION WITH LONG VALLEY ROAD AND THE STATION ON THE RIGHT.
 AB4631'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AB4631'SET FLUSH WITH THE GROUND. IT IS 87.2 FT (26.6 M) NORTHWEST OF THE
 AB4631'CENTERLINE OF MD ROUTE 31, 34.7 FT (10.6 M) SOUTHWEST OF THE
 AB4631'CENTERLINE OF LONG VALLEY ROAD, 56 FT (17.1 M) WEST OF LIGHT POST
 AB4631'NO.35 AND 120.0 FT (36.6 M) SOUTHEAST OF A SIGN.
 AB4631
 AB4631                          STATION RECOVERY (2014)
 AB4631
 AB4631'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AB4631'RECOVERED IN GOOD CONDITION.
 AB4631
 AB4631                          STATION RECOVERY (2023)
 AB4631
 AB4631'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 AB4631'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2739 ***********************************************************************
 HU2739  DESIGNATION -  BELL AZ MK 2
 HU2739  PID         -  HU2739
 HU2739  STATE/COUNTY-  MD/SOMERSET
 HU2739  COUNTRY     -  US
 HU2739  USGS QUAD   -  KINGSTON (2016)
 HU2739
 HU2739                         *CURRENT SURVEY CONTROL
 HU2739  ______________________________________________________________________
 HU2739* NAD 83(1993) POSITION- 38 00 38.15192(N) 075 38 56.98975(W)   ADJUSTED
 HU2739* NAVD 88 ORTHO HEIGHT -     1.9   (meters)        6.    (feet) VERTCON3
 HU2739  ______________________________________________________________________
 HU2739  GEOID HEIGHT    -        -36.274 (meters)                     GEOID18
 HU2739  LAPLACE CORR    -         -2.25  (seconds)                    DEFLEC18
 HU2739  HORZ ORDER      -  SECOND
 HU2739
 HU2739.The horizontal coordinates were established by classical geodetic methods
 HU2739.and adjusted by the National Geodetic Survey in November 1994.
 HU2739
 HU2739.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2739.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2739
 HU2739.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2739.GEOID18 height accuracy estimate available here.
 HU2739
 HU2739.Click photographs - Photos may exist for this station.
 HU2739
 HU2739.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2739
 HU2739. The following values were computed from the NAD 83(1993) position.
 HU2739
 HU2739;                    North         East     Units Scale Factor Converg.
 HU2739;SPC MD       -    39,056.181   518,633.326   MT  1.00006294   +0 50 52.2
 HU2739;SPC MD       -   128,136.82  1,701,549.50   sFT  1.00006294   +0 50 52.2
 HU2739;SPC VA S     - 1,189,921.798 3,750,323.949   MT  1.00000831   +1 43 48.9
 HU2739;SPC VA S     - 3,903,935.10 12,304,187.82   sFT  1.00000831   +1 43 48.9
 HU2739;UTM  18      - 4,207,189.671   443,013.057   MT  0.99964000   -0 23 59.2
 HU2739
 HU2739!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2739!SPC MD       -   1.00000539  x   1.00006294  =   1.00006833
 HU2739!SPC VA S     -   1.00000539  x   1.00000831  =   1.00001370
 HU2739!UTM  18      -   1.00000539  x   0.99964000  =   0.99964539
 HU2739
 HU2739_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4301307189(NAD 83)
 HU2739
 HU2739                          SUPERSEDED SURVEY CONTROL
 HU2739
 HU2739  NAD 83(1991)-  38 00 38.15155(N)    075 38 56.98952(W) AD(       ) 2
 HU2739  NAD 83(1986)-  38 00 38.15065(N)    075 38 57.02071(W) AD(       ) 2
 HU2739  NGVD 29 (11/20/91)    2.2    (m)            7.     (f) VERT ANG       
 HU2739
 HU2739.Superseded values are not recommended for survey control.
 HU2739
 HU2739.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2739.See file dsdata.pdf to determine how the superseded data were derived.
 HU2739
 HU2739_MARKER: DZ = AZIMUTH MARK DISK
 HU2739_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2739_STAMPING: BELL 1942 NO 2 1988
 HU2739_MARK LOGO: NGS
 HU2739_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2739_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2739+STABILITY: SURFACE MOTION
 HU2739_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2739+SATELLITE: SATELLITE OBSERVATIONS - 1988
 HU2739
 HU2739  HISTORY     - Date     Condition        Report By
 HU2739  HISTORY     - 1988     MONUMENTED       NGS
 HU2739
 HU2739                          STATION DESCRIPTION
 HU2739
 HU2739'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 HU2739'THE MARK IS LOCATED ABOUT 10.1 KM (6.30 MI) SOUTHWEST OF POCOMOKE AND
 HU2739'3.6 KM (2.25 MI) SOUTH-SOUTHEAST OF REHOBETH.  OWNERSHIP--DENNETT L.
 HU2739'BUTLER, RD 1 BOX 144, MARION STATION ROAD, MARION MD. 21838, PHONE
 HU2739'(301) 957-0730.
 HU2739'TO REACH THE MARK FROM THE INTERSECTION OF U.S. HIGHWAY 13 AND STATE
 HU2739'HIGHWAY 667, GO SOUTHWEST ON STATE HIGHWAY 13 FOR 7.7 KM (4.80 MI) TO
 HU2739'A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTH ON VESSEY ROAD FOR 0.7 KM
 HU2739'(0.45 MI) TO A FORK.  BEAR RIGHT AND GO WEST ON VESSEY ROAD FOR 0.4 KM
 HU2739'(0.25 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTH ON SHELLTOWN
 HU2739'ROAD FOR 1.7 KM (1.05 MI) TO A FORK.  BEAR LEFT AND GO SOUTHEAST ON
 HU2739'SHELLTOWN ROAD FOR 2.8 KM (1.75 MI) TO THE MARK ON THE LEFT.
 HU2739'THE MARK IS SET IN THE TOP OF A 0.28 M (0.9 FT) ROUND CONCRETE POST
 HU2739'FLUSH WITH THE GROUND.  THE UNDERGROUND MARK IS SET 1 M (3.3 FT) BELOW
 HU2739'GROUND.  THEY ARE 8.5 M (27.9 FT) NORTHEAST OF SHELLTOWN ROAD, 7.4 M
 HU2739'(24.3 FT) SOUTHEAST OF THE CENTERLINE OF A DIRT ROAD, 4.3 M (14.1 FT)
 HU2739'WEST OF A TRIANGULAR BLAZED OAK TREE, 2.1 M (6.9 FT) NORTH OF A POWER
 HU2739'TRANSFORMER BOX AND 1.5 M (4.9 FT) WEST-SOUTHWEST OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6812 ***********************************************************************
 HV6812  DESIGNATION -  BELLE MSFC 1908
 HV6812  PID         -  HV6812
 HV6812  STATE/COUNTY-  MD/ST MARYS
 HV6812  COUNTRY     -  US
 HV6812  USGS QUAD   -  LEONARDTOWN (2016)
 HV6812
 HV6812                         *CURRENT SURVEY CONTROL
 HV6812  ______________________________________________________________________
 HV6812* NAD 83(1993) POSITION- 38 16 08.99028(N) 076 38 36.06672(W)   ADJUSTED
 HV6812* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6812  ______________________________________________________________________
 HV6812  GEOID HEIGHT    -        -33.894 (meters)                     GEOID18
 HV6812  LAPLACE CORR    -         -5.04  (seconds)                    DEFLEC18
 HV6812  HORZ ORDER      -  THIRD
 HV6812
 HV6812.The horizontal coordinates were established by classical geodetic methods
 HV6812.and adjusted by the National Geodetic Survey in November 1994.
 HV6812
 HV6812.The orthometric height was scaled from a topographic map.
 HV6812
 HV6812.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6812.GEOID18 height accuracy estimate available here.
 HV6812
 HV6812.Click photographs - Photos may exist for this station.
 HV6812
 HV6812.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6812
 HV6812. The following values were computed from the NAD 83(1993) position.
 HV6812
 HV6812;                    North         East     Units Scale Factor Converg.
 HV6812;SPC MD       -    66,940.955   431,210.535   MT  1.00000551   +0 13 25.8
 HV6812;SPC MD       -   219,622.12  1,414,729.90   sFT  1.00000551   +0 13 25.8
 HV6812;SPC VA N     - 2,068,518.705 3,662,459.655   MT  0.99996676   +1 09 31.6
 HV6812;SPC VA N     - 6,786,465.12 12,015,919.72   sFT  0.99996676   +1 09 31.6
 HV6812;UTM  18      - 4,236,957.082   356,242.410   MT  0.99985452   -1 01 04.8
 HV6812
 HV6812!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6812!SPC MD       -   1.00000505  x   1.00000551  =   1.00001056
 HV6812!SPC VA N     -   1.00000505  x   0.99996676  =   0.99997181
 HV6812!UTM  18      -   1.00000505  x   0.99985452  =   0.99985957
 HV6812
 HV6812:                Primary Azimuth Mark                     Grid Az
 HV6812:SPC MD       -  NONAME MSFC 1908                         051 57 16.7
 HV6812:SPC VA N     -  NONAME MSFC 1908                         051 01 10.9
 HV6812:UTM  18      -  NONAME MSFC 1908                         053 11 47.3
 HV6812
 HV6812_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5624236957(NAD 83)
 HV6812
 HV6812|---------------------------------------------------------------------|
 HV6812| PID    Reference Object                     Distance      Geod. Az  |
 HV6812|                                                           dddmmss.s |
 HV6812| HV6810 NONAME MSFC 1908                    APPROX. 0.7 KM 0521042.5 |
 HV6812| HV6805 BEAU MSFC 1908                      468.816 METERS 1431851.4 |
 HV6812| HV6799 HEALEY MSFC 1908                    232.476 METERS 25018     |
 HV6812|---------------------------------------------------------------------|
 HV6812
 HV6812                          SUPERSEDED SURVEY CONTROL
 HV6812
 HV6812  NAD 83(1991)-  38 16 08.98937(N)    076 38 36.07151(W) AD(       ) 3
 HV6812  NAD 83(1986)-  38 16 08.99016(N)    076 38 36.08322(W) AD(       ) 3
 HV6812  NAD 27      -  38 16 08.51600(N)    076 38 37.20200(W) AD(       ) 3
 HV6812  USSD        -  38 16 09.12400(N)    076 38 37.08200(W) AD(       ) 3
 HV6812
 HV6812.Superseded values are not recommended for survey control.
 HV6812
 HV6812.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6812.See file dsdata.pdf to determine how the superseded data were derived.
 HV6812
 HV6812_MARKER: H = DRILL HOLE
 HV6812_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6812_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6812+STABILITY: SURFACE MOTION
 HV6812
 HV6812  HISTORY     - Date     Condition        Report By
 HV6812  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6812  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6812
 HV6812                          STATION DESCRIPTION
 HV6812
 HV6812'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6812'STATION IS ON THE NORTHWESTERN SHORE OF UPPER BRETONS BAY, ABOUT
 HV6812'1/2 MILE NNE OF LOVERS POINT, AND 5/8 MILE WNW OF ENTRANCE TO
 HV6812'MOULDY CREEK, IN A CULTIVATED FIELD, ABOUT 3 FEET ABOVE HIGH
 HV6812'WATER, 9 YARDS NW OF SHORE, 50 YARDS S BY W OF A CLUMP OF TREES,
 HV6812'AND 65 YARDS SE BY E OF AND ALMOST IN LINE WITH NE SIDE OF HOUSE.
 HV6812'
 HV6812'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6812'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6812'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6812'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6812'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6812'AS FOLLOWS--RIGHT CHIMNEY OF HOUSE, 5/8 MILE, S 6 DEG 37 MIN W.
 HV6812'CHIMNEY OF LARGE HOUSE NEXT TO WHARF, 5/8 MILE, S 20 DEG 0 MIN W.
 HV6812'LEFT OF LEFT CHIMNEY OF ADAMS HOUSE, 65 YARDS, N 52 DEG 45 MIN W.
 HV6812'CHIMNEY OF HOUSE, 1/2 MILE, N 40 DEG 11 MIN E.  LEFT CORNER OF
 HV6812'LEFT CHIMNEY OF HOUSE, 1 MILE, N 67 DEG 33 MIN E.  RIGHT CHIMNEY
 HV6812'OF HOUSE ON HILL, 1-1/2 MILES, S 88 DEG 14 MIN E.  NEAR PEAK OF
 HV6812'ROOF OF HOUSE, 3/4 MILE, S 74 DEG 22 MIN E.  CHIMNEY ON MIDDLE OF
 HV6812'DOUBLE HOUSE, 1/2 MILE, S 9 DEG 35 MIN E.
 HV6812
 HV6812                          STATION RECOVERY (1958)
 HV6812
 HV6812'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6812'THE STATION WAS NOT RECOVERED AFTER A THIRTY MINUTE SEARCH.  THE
 HV6812'REFERENCE DISTANCES NO LONGER APPLY TO PRESENT CONDITIONS.  THE
 HV6812'AREA IS GROWN-UP IN VINES AND BRUSH AND THE STATION IS BELIEVED
 HV6812'TO BE INTACT BUT COVERED OVER BY THE DEBRIS AND VINES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6047 ***********************************************************************
 HV6047  DESIGNATION -  BELLEVUE
 HV6047  PID         -  HV6047
 HV6047  STATE/COUNTY-  MD/TALBOT
 HV6047  COUNTRY     -  US
 HV6047  USGS QUAD   -  OXFORD (2016)
 HV6047
 HV6047                         *CURRENT SURVEY CONTROL
 HV6047  ______________________________________________________________________
 HV6047* NAD 83(1991) POSITION- 38 42 09.70237(N) 076 10 48.68905(W)   ADJUSTED
 HV6047* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6047  ______________________________________________________________________
 HV6047  GEOID HEIGHT    -        -34.597 (meters)                     GEOID18
 HV6047  LAPLACE CORR    -         -4.24  (seconds)                    DEFLEC18
 HV6047  HORZ ORDER      -  THIRD
 HV6047
 HV6047.The horizontal coordinates were established by classical geodetic methods
 HV6047.and adjusted by the National Geodetic Survey in January 1992.
 HV6047
 HV6047.The orthometric height was scaled from a topographic map.
 HV6047
 HV6047.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6047.GEOID18 height accuracy estimate available here.
 HV6047
 HV6047.Click photographs - Photos may exist for this station.
 HV6047
 HV6047.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6047
 HV6047. The following values were computed from the NAD 83(1991) position.
 HV6047
 HV6047;                    North         East     Units Scale Factor Converg.
 HV6047;SPC MD       -   115,323.415   471,309.097   MT  0.99995439   +0 30 52.3
 HV6047;SPC MD       -   378,356.90  1,546,286.60   sFT  0.99995439   +0 30 52.3
 HV6047;UTM  18      - 4,284,446.106   397,377.265   MT  0.99972969   -0 44 16.8
 HV6047
 HV6047!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6047!SPC MD       -   1.00000547  x   0.99995439  =   0.99995986
 HV6047!UTM  18      -   1.00000547  x   0.99972969  =   0.99973516
 HV6047
 HV6047_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9737784446(NAD 83)
 HV6047
 HV6047                          SUPERSEDED SURVEY CONTROL
 HV6047
 HV6047  NAD 83(1986)-  38 42 09.69876(N)    076 10 48.70459(W) AD(       ) 3
 HV6047  NAD 27      -  38 42 09.26100(N)    076 10 49.92000(W) AD(       ) 3
 HV6047  USSD        -  38 42 09.65800(N)    076 10 49.72400(W) AD(       ) 3
 HV6047
 HV6047.Superseded values are not recommended for survey control.
 HV6047
 HV6047.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6047.See file dsdata.pdf to determine how the superseded data were derived.
 HV6047
 HV6047_MARKER: Z = SEE DESCRIPTION
 HV6047_SETTING: 0 = UNSPECIFIED SETTING
 HV6047_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6047
 HV6047  HISTORY     - Date     Condition        Report By
 HV6047  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6047  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6047
 HV6047                          STATION DESCRIPTION
 HV6047
 HV6047'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6047'ON THE WESTERN SHORE OF TRED AVON RIVER, AT BELLEVUE (STEAMBOAT)
 HV6047'LANDING, ABOUT 3/4 MILE NW OF OXFORD (STEAMBOAT) LANDING. STATION
 HV6047'IS ON S SIDE OF ROADWAY PIER TO BELLEVUE WHARF, ABOUT 16 YARDS S
 HV6047'BY W OF A CRAB HOUSE AND 25 YARDS W OF WHARF HOUSE. STATION IS
 HV6047'CENTER OF A 3-INCH SQUARE STAFF 12 FEET HIGH. DISTANCES AND
 HV6047'DIRECTIONS TO POINTS OF REFERENCE ARE AS FOLLOWS--CENTER ONE OF
 HV6047'FOUR NAILS IN PLANK, 3.42 METERS (11.22 FEET), N BY E.  RIGHT
 HV6047'CORNER OF STOREHOUSE, 16.00 METERS (52.5 FEET), NE.  LEFT CORNER
 HV6047'OF WHARF HOUSE, 24.25 METERS, (79.56 FEET), E BY N. RIGHT CORNER
 HV6047'OF WHARF HOUSE, 24.18 METERS, (79.3 FEET), E BY S. CENTER ONE OF
 HV6047'FOUR NAILS IN PLANK, 0.73 METER (2.40 FEET), E BY S.  CENTER ONE
 HV6047'OF FOUR NAILS IN PLANK, 0.82 METER (2.69 FEET), W BY N.
 HV6047
 HV6047                          STATION RECOVERY (1940)
 HV6047
 HV6047'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6047'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  ORIGINAL ROADWAY
 HV6047'PIER DESTROYED AND RE-BUILT.
 HV6047'
 HV6047'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3138 ***********************************************************************
 DI3138  DESIGNATION -  BELLEVUE 1
 DI3138  PID         -  DI3138
 DI3138  STATE/COUNTY-  MD/TALBOT
 DI3138  COUNTRY     -  US
 DI3138  USGS QUAD   -  OXFORD (2016)
 DI3138
 DI3138                         *CURRENT SURVEY CONTROL
 DI3138  ______________________________________________________________________
 DI3138* NAD 83(2011) POSITION- 38 43 00.36698(N) 076 11 29.43388(W)   ADJUSTED
 DI3138* NAD 83(2011) ELLIP HT-   -32.217 (meters)        (06/27/12)   ADJUSTED
 DI3138* NAD 83(2011) EPOCH   -  2010.00
 DI3138* NAVD 88 ORTHO HEIGHT -     2.3   (meters)        8.    (feet) GPS OBS
 DI3138  ______________________________________________________________________
 DI3138  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3138  GEOID HEIGHT    -        -34.509 (meters)                     GEOID03
 DI3138  GEOID HEIGHT    -        -34.546 (meters)                     GEOID18
 DI3138  NAD 83(2011) X  -  1,189,336.239 (meters)                     COMP
 DI3138  NAD 83(2011) Y  - -4,839,014.096 (meters)                     COMP
 DI3138  NAD 83(2011) Z  -  3,967,812.804 (meters)                     COMP
 DI3138  LAPLACE CORR    -         -4.40  (seconds)                    DEFLEC18
 DI3138
 DI3138  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3138  Standards:
 DI3138         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3138            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3138  -------------------------------------------------------------------
 DI3138  NETWORK    0.68   0.92           0.31   0.23   0.47      0.01642089
 DI3138  -------------------------------------------------------------------
 DI3138  Click here for local accuracies and other accuracy information.
 DI3138
 DI3138.The horizontal coordinates were established by GPS observations
 DI3138.and adjusted by the National Geodetic Survey in June 2012.
 DI3138
 DI3138.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3138.been affixed to the stable North American tectonic plate. See 
 DI3138.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3138
 DI3138.The horizontal coordinates are valid at the epoch date displayed above
 DI3138.which is a decimal equivalence of Year/Month/Day.
 DI3138
 DI3138.The orthometric height was determined by GPS observations and a
 DI3138.high-resolution geoid model.
 DI3138
 DI3138.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3138.GEOID18 height accuracy estimate available here.
 DI3138
 DI3138.Click photographs - Photos may exist for this station.
 DI3138
 DI3138.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3138
 DI3138.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3138
 DI3138.The ellipsoidal height was determined by GPS observations
 DI3138.and is referenced to NAD 83.
 DI3138
 DI3138. The following values were computed from the NAD 83(2011) position.
 DI3138
 DI3138;                    North         East     Units Scale Factor Converg.
 DI3138;SPC MD       -   116,876.800   470,310.818   MT  0.99995368   +0 30 26.8
 DI3138;SPC MD       -   383,453.30  1,543,011.41   sFT  0.99995368   +0 30 26.8
 DI3138;UTM  18      - 4,286,020.593   396,413.398   MT  0.99973213   -0 44 43.2
 DI3138
 DI3138!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3138!SPC MD       -   1.00000505  x   0.99995368  =   0.99995873
 DI3138!UTM  18      -   1.00000505  x   0.99973213  =   0.99973718
 DI3138
 DI3138_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9641386020(NAD 83)
 DI3138
 DI3138|---------------------------------------------------------------------|
 DI3138| PID    Reference Object                     Distance      Geod. Az  |
 DI3138|                                                           dddmmss.s |
 DI3138| DI3139 BELLEVUE 2                          360.585 METERS 04726     |
 DI3138|---------------------------------------------------------------------|
 DI3138
 DI3138                          SUPERSEDED SURVEY CONTROL
 DI3138
 DI3138  NAD 83(1991)-  38 43 00.36717(N)    076 11 29.43480(W) AD(       ) 1
 DI3138  ELLIP H (01/05/07)  -32.179  (m)                       GP(       ) 4 2
 DI3138
 DI3138.Superseded values are not recommended for survey control.
 DI3138
 DI3138.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3138.See file dsdata.pdf to determine how the superseded data were derived.
 DI3138
 DI3138_MARKER: DD = SURVEY DISK
 DI3138_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3138_STAMPING: BELLEVUE 1
 DI3138_PROJECTION: FLUSH
 DI3138_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3138_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3138+STABILITY: SURFACE MOTION
 DI3138_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3138+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3138
 DI3138  HISTORY     - Date     Condition        Report By
 DI3138  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3138
 DI3138                          STATION DESCRIPTION
 DI3138
 DI3138'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3138'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR OXFORD,
 DI3138'MARYLAND.  IT IS ABOUT  7.5 MI (12.1 KM) SOUTHWEST OF EASTON,
 DI3138'MARYLAND, ABOUT 12.1 MI (19.5 KM) NORTHWEST OF  CAMBRIDGE, MARYLAND
 DI3138'AND ABOUT 2.2 MI (3.5 KM) NORTHWEST OF OXFORD, MARYLAND.
 DI3138'
 DI3138'TO REACH THE STATION FROM THE INTERSECTION SR322 (EASTON BYPASS) AND
 DI3138'SR 33 (ST. MICHAELS  ROAD) PROCEED SOUTHWEST ON SR33 FOR 4.2 MI (6.8
 DI3138'KM) TO INTERSECTION WITH SR 329 (ROYAL  OAK ROAD).    TURN LEFT AND
 DI3138'PROCEED 2.3 MI (3.7 KM) SOUTHWEST TO INTERSECTION WITH  BELLEVUE ROAD.
 DI3138'TURN LEFT AND PROCEED 2.0 MI (3.2 KM)  SOUTHWEST TO THE STATION ON THE
 DI3138'RIGHT.
 DI3138'STATION IS 17.0 FT (5.2 M) WEST OF THE WEST EDGE OF BELLEVUE ROAD,
 DI3138'175.0 FT (53.3 M)  NORTHEAST OF TELEPHONE POLE 322/12 AND 105.0 FT
 DI3138'(32.0 M) SOUTHWEST OF TELEPHONE POLE  322/11.  A 3 IN BRASS DISK
 DI3138'STAMPED BELLEVUE 1 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE  MONUMENT
 DI3138'FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3139 ***********************************************************************
 DI3139  DESIGNATION -  BELLEVUE 2
 DI3139  PID         -  DI3139
 DI3139  STATE/COUNTY-  MD/TALBOT
 DI3139  COUNTRY     -  US
 DI3139  USGS QUAD   -  OXFORD (2016)
 DI3139
 DI3139                         *CURRENT SURVEY CONTROL
 DI3139  ______________________________________________________________________
 DI3139* NAD 83(2011) POSITION- 38 43 08.27695(N) 076 11 18.44086(W)   ADJUSTED
 DI3139* NAD 83(2011) ELLIP HT-   -32.058 (meters)        (06/27/12)   ADJUSTED
 DI3139* NAD 83(2011) EPOCH   -  2010.00
 DI3139* NAVD 88 ORTHO HEIGHT -     2.5   (meters)        8.    (feet) GPS OBS
 DI3139  ______________________________________________________________________
 DI3139  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3139  GEOID HEIGHT    -        -34.512 (meters)                     GEOID03
 DI3139  GEOID HEIGHT    -        -34.549 (meters)                     GEOID18
 DI3139  NAD 83(2011) X  -  1,189,557.744 (meters)                     COMP
 DI3139  NAD 83(2011) Y  - -4,838,802.671 (meters)                     COMP
 DI3139  NAD 83(2011) Z  -  3,968,003.212 (meters)                     COMP
 DI3139  LAPLACE CORR    -         -4.35  (seconds)                    DEFLEC18
 DI3139
 DI3139  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3139  Standards:
 DI3139         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3139            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3139  -------------------------------------------------------------------
 DI3139  NETWORK    0.68   0.92           0.31   0.23   0.47      0.00323117
 DI3139  -------------------------------------------------------------------
 DI3139  Click here for local accuracies and other accuracy information.
 DI3139
 DI3139.The horizontal coordinates were established by GPS observations
 DI3139.and adjusted by the National Geodetic Survey in June 2012.
 DI3139
 DI3139.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3139.been affixed to the stable North American tectonic plate. See 
 DI3139.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3139
 DI3139.The horizontal coordinates are valid at the epoch date displayed above
 DI3139.which is a decimal equivalence of Year/Month/Day.
 DI3139
 DI3139.The orthometric height was determined by GPS observations and a
 DI3139.high-resolution geoid model.
 DI3139
 DI3139.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3139.GEOID18 height accuracy estimate available here.
 DI3139
 DI3139.Click photographs - Photos may exist for this station.
 DI3139
 DI3139.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3139
 DI3139.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3139
 DI3139.The ellipsoidal height was determined by GPS observations
 DI3139.and is referenced to NAD 83.
 DI3139
 DI3139. The following values were computed from the NAD 83(2011) position.
 DI3139
 DI3139;                    North         East     Units Scale Factor Converg.
 DI3139;SPC MD       -   117,123.049   470,574.202   MT  0.99995358   +0 30 33.7
 DI3139;SPC MD       -   384,261.20  1,543,875.53   sFT  0.99995358   +0 30 33.7
 DI3139;UTM  18      - 4,286,260.970   396,682.044   MT  0.99973145   -0 44 36.4
 DI3139
 DI3139!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3139!SPC MD       -   1.00000503  x   0.99995358  =   0.99995861
 DI3139!UTM  18      -   1.00000503  x   0.99973145  =   0.99973648
 DI3139
 DI3139_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9668286260(NAD 83)
 DI3139
 DI3139|---------------------------------------------------------------------|
 DI3139| PID    Reference Object                     Distance      Geod. Az  |
 DI3139|                                                           dddmmss.s |
 DI3139| DI3138 BELLEVUE 1                          360.585 METERS 22726     |
 DI3139|---------------------------------------------------------------------|
 DI3139
 DI3139                          SUPERSEDED SURVEY CONTROL
 DI3139
 DI3139  NAD 83(1991)-  38 43 08.27714(N)    076 11 18.44177(W) AD(       ) 1
 DI3139  ELLIP H (01/05/07)  -32.020  (m)                       GP(       ) 4 2
 DI3139
 DI3139.Superseded values are not recommended for survey control.
 DI3139
 DI3139.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3139.See file dsdata.pdf to determine how the superseded data were derived.
 DI3139
 DI3139_MARKER: DD = SURVEY DISK
 DI3139_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3139_STAMPING: BELLEVUE 2
 DI3139_PROJECTION: FLUSH
 DI3139_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3139_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3139+STABILITY: SURFACE MOTION
 DI3139_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3139+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3139
 DI3139  HISTORY     - Date     Condition        Report By
 DI3139  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3139
 DI3139                          STATION DESCRIPTION
 DI3139
 DI3139'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3139'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR OXFORD,
 DI3139'MARYLAND.  IT IS ABOUT  7.4 MI (11.9 KM) SOUTHWEST OF EASTON,
 DI3139'MARYLAND, ABOUT 12.3 MILES (19.8 KM) NORTHWEST OF  CAMBRIDGE, MARYLAND
 DI3139'AND ABOUT 2.3 MI (3.7 KM) NORTHWEST OF OXFORD, MARYLAND.
 DI3139'
 DI3139'TO REACH THE STATION FROM THE INTERSECTION SR322 (EASTON BYPASS) AND
 DI3139'SR 33 (ST. MICHAELS  ROAD) PROCEED SOUTHWEST ON SR33 FOR 4.2 MI (6.8
 DI3139'KM) TO INTERSECTION WITH SR 329 (ROYAL  OAK ROAD).    TURN LEFT AND
 DI3139'PROCEED 2.3 MI (3.7 KM) SOUTHWEST TO INTERSECTION WITH  BELLEVUE ROAD.
 DI3139'TURN LEFT AND PROCEED 1.8 MI (2.9 KM)  SOUTHWEST TO THE STATION ON THE
 DI3139'LEFT.
 DI3139'STATION IS 5.4 FT (1.6 M) SOUTHEAST OF THE SOUTHEAST EDGE OF BELLEVUE
 DI3139'ROAD, 120.0 FT (36.6 M)  SOUTHWEST OF UTILITY POLE CP 48 AND 12.0 FT
 DI3139'(3.7 M) NORTHWEST OF WHITE SPLIT RAIL  FENCE.  A 3 IN BRASS DISK
 DI3139'STAMPED BELLEVUE 2 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE  MONUMENT
 DI3139'FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6046 ***********************************************************************
 JV6046  DESIGNATION -  BELMONT
 JV6046  PID         -  JV6046
 JV6046  STATE/COUNTY-  MD/BALTIMORE
 JV6046  COUNTRY     -  US
 JV6046  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6046
 JV6046                         *CURRENT SURVEY CONTROL
 JV6046  ______________________________________________________________________
 JV6046* NAD 83(1991) POSITION- 39 18 32.11632(N) 076 45 11.12341(W)   ADJUSTED
 JV6046* NAVD 88 ORTHO HEIGHT -   136.    (meters)      446.    (feet) SCALED
 JV6046  ______________________________________________________________________
 JV6046  GEOID HEIGHT    -        -32.263 (meters)                     GEOID18
 JV6046  LAPLACE CORR    -         -4.12  (seconds)                    DEFLEC18
 JV6046  HORZ ORDER      -  SECOND
 JV6046
 JV6046.The horizontal coordinates were established by classical geodetic methods
 JV6046.and adjusted by the National Geodetic Survey in January 1992.
 JV6046
 JV6046.The orthometric height was scaled from a topographic map.
 JV6046
 JV6046.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6046.GEOID18 height accuracy estimate available here.
 JV6046
 JV6046.Click photographs - Photos may exist for this station.
 JV6046
 JV6046.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6046
 JV6046. The following values were computed from the NAD 83(1991) position.
 JV6046
 JV6046;                    North         East     Units Scale Factor Converg.
 JV6046;SPC MD       -   182,329.680   421,295.133   MT  0.99997836   +0 09 17.9
 JV6046;SPC MD       -   598,193.29  1,382,199.12   sFT  0.99997836   +0 09 17.9
 JV6046;UTM  18      - 4,352,523.919   348,854.483   MT  0.99988128   -1 06 38.9
 JV6046
 JV6046!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6046!SPC MD       -   0.99998376  x   0.99997836  =   0.99996212
 JV6046!UTM  18      -   0.99998376  x   0.99988128  =   0.99986504
 JV6046
 JV6046_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4885452523(NAD 83)
 JV6046
 JV6046                          SUPERSEDED SURVEY CONTROL
 JV6046
 JV6046  NAD 83(1986)-  39 18 32.11354(N)    076 45 11.13166(W) AD(       ) 2
 JV6046  NAD 27      -  39 18 31.73170(N)    076 45 12.22660(W) AD(       ) 2
 JV6046
 JV6046.Superseded values are not recommended for survey control.
 JV6046
 JV6046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6046.See file dsdata.pdf to determine how the superseded data were derived.
 JV6046
 JV6046_MARKER: DD = SURVEY DISK
 JV6046_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6046_STAMPING: BELMONT 1956
 JV6046_MARK LOGO: MDBCSM
 JV6046_PROJECTION: PROJECTING
 JV6046_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6046+STABILITY: SURFACE MOTION
 JV6046
 JV6046  HISTORY     - Date     Condition        Report By
 JV6046  HISTORY     - 1957     MONUMENTED       CGS
 JV6046  HISTORY     - 1960     SEE DESCRIPTION  MDDT
 JV6046  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV6046
 JV6046                          STATION DESCRIPTION
 JV6046
 JV6046'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6046'STATION IS LOCATED NEAR THE INTERSECTION OF ROLLING ROAD AND
 JV6046'BELMONT AVENUE ABOUT 4.0 MILES NORTHEAST OF ELLICOTT CITY AND
 JV6046'ABOUT 2-1/2 MILES NORTH OF CATONVILLE.  STATION IS 48 FEET
 JV6046'EAST-NORTHEAST OF APPROXIMATE CENTER OF INTERSECTION OF ROLLING
 JV6046'ROAD AND BELMONT AVENUE AND 15 FEET NORTHEAST OF UTILITY POLE.
 JV6046'THE MARK IS A BRONZE DISK (MARYLAND BUREAU OF CONTROLL SURVEY) SET
 JV6046'IN A 6X6 INCH CONCRETE MONUMENT, PROJECTS ABOUT 2 INCHES AND
 JV6046'STAMPED BELMONT 1956.
 JV6046'
 JV6046'THIS STATION WAS LOCATED BY TRAVERSE FROM TRIANGULATION STATION
 JV6046'ROLLING 1957.
 JV6046
 JV6046                          STATION RECOVERY (1960)
 JV6046
 JV6046'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 JV6046'STATION WAS RECOVERED AS DESCRIBED AND FOUND TO BE IN GOOD
 JV6046'CONDITION.  THE MARK WAS DESTROYED TO MAKE WAY FOR HIGHWAY
 JV6046'CONSTRUCTION.
 JV6046
 JV6046                          STATION RECOVERY (2003)
 JV6046
 JV6046'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV6046'NOT FOUND.  NOTE-- BELMONT AVENUE DOES NOT INTERSECT ROLLING ROAD.
 JV6046'INTERSTATE 70 IS IN THE LOCATION DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5866 ***********************************************************************
 JV5866  DESIGNATION -  BELTSVILLE ARC AIRPORT TANK
 JV5866  PID         -  JV5866
 JV5866  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5866  COUNTRY     -  US
 JV5866  USGS QUAD   -  LAUREL (2016)
 JV5866
 JV5866                         *CURRENT SURVEY CONTROL
 JV5866  ______________________________________________________________________
 JV5866* NAD 83(1991) POSITION- 39 00 53.18256(N) 076 49 08.35044(W)   ADJUSTED
 JV5866  ______________________________________________________________________
 JV5866  GEOID HEIGHT    -        -32.409 (meters)                     GEOID18
 JV5866  LAPLACE CORR    -         -5.41  (seconds)                    DEFLEC18
 JV5866  HORZ ORDER      -  THIRD
 JV5866
 JV5866.The horizontal coordinates were established by classical geodetic methods
 JV5866.and adjusted by the National Geodetic Survey in January 1992.
 JV5866
 JV5866.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5866.GEOID18 height accuracy estimate available here.
 JV5866
 JV5866.Click photographs - Photos may exist for this station.
 JV5866
 JV5866.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5866
 JV5866. The following values were computed from the NAD 83(1991) position.
 JV5866
 JV5866;                    North         East     Units Scale Factor Converg.
 JV5866;SPC MD       -   149,661.699   415,676.560   MT  0.99995278   +0 06 49.0
 JV5866;SPC MD       -   491,015.09  1,363,765.51   sFT  0.99995278   +0 06 49.0
 JV5866;UTM  18      - 4,319,989.932   342,518.003   MT  0.99990539   -1 08 43.2
 JV5866
 JV5866_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4251819989(NAD 83)
 JV5866
 JV5866                          SUPERSEDED SURVEY CONTROL
 JV5866
 JV5866  NAD 83(1986)-  39 00 53.18057(N)    076 49 08.36178(W) AD(       ) 3
 JV5866  NAD 27      -  39 00 52.78535(N)    076 49 09.46774(W) AD(       ) 3
 JV5866
 JV5866.Superseded values are not recommended for survey control.
 JV5866
 JV5866.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5866.See file dsdata.pdf to determine how the superseded data were derived.
 JV5866
 JV5866_MARKER: 53 = ELEVATED TANK
 JV5866
 JV5866  HISTORY     - Date     Condition        Report By
 JV5866  HISTORY     - 1942     FIRST OBSERVED   CGS
 JV5866  HISTORY     - 1962     GOOD             CGS
 JV5866  HISTORY     - 1970     GOOD             NGS
 JV5866
 JV5866                          STATION DESCRIPTION
 JV5866
 JV5866'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 JV5866'THE STATION IS ABOUT 5.5 MILES S, 1.5 MILES E OF THE TOWN OF
 JV5866'LAUREL.  IT IS ABOUT 0.5 MILE W OF THE W RUNWAY OF THE NEW
 JV5866'LANDING FIELD BEING BUILT IN CONNECTION WITH FORT MEADE.  IT IS
 JV5866'ON U.S. GOVERNMENT PROPERTY.  IT IS A SILVER PAINTED STEEL BOWL
 JV5866'SUPPORTED ATOP A FOUR-LEGGED STEEL STRUCTURE, AN OVERALL HEIGHT
 JV5866'OF ABOUT 35 FEET.
 JV5866'
 JV5866'CONNECTED BY TRAVERSE FROM STATION PRINCE.  DISTANCE 38.649.
 JV5866
 JV5866                          STATION RECOVERY (1962)
 JV5866
 JV5866'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 JV5866'THE STATION WAS RECOVERED AS DESCRIBED AND FOUND IN GOOD
 JV5866'CONDITION.  THE NAME OF THE STATION HAS CHANGED.  IT IS THE
 JV5866'BELTSVILLE, AGRICULTURE RESEARCH CENTER AIRPORT, INSTEAD OF THE
 JV5866'LANDING FIELD TANK AS PREVIOUSLY DESCRIBED IN 1942.  THE
 JV5866'STRUCTURE IS DARK GRAY IN COLOR.  IT WAS PREVIOUSLY PAINTED
 JV5866'SILVER.  THE OVERALL HEIGHT OF THE STRUCTURE IS APPROXIMATELY
 JV5866'60.0 FEET INSTEAD OF 35.0 FEET AS PREVIOUSLY DESCRIBED.
 JV5866
 JV5866                          STATION RECOVERY (1970)
 JV5866
 JV5866'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5866'THE STATION WAS RECOVERED AS DESCRIBED BY R.W. TOMLINSON IN 1962.
 JV5866'
 JV5866'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5866'1-1/2 MILES EAST OF LAUREL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5934 ***********************************************************************
 JV5934  DESIGNATION -  BELTSVILLE DA ADM BLDG CUPOLA
 JV5934  PID         -  JV5934
 JV5934  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5934  COUNTRY     -  US
 JV5934  USGS QUAD   -  LAUREL (2016)
 JV5934
 JV5934                         *CURRENT SURVEY CONTROL
 JV5934  ______________________________________________________________________
 JV5934* NAD 83(1991) POSITION- 39 02 02.34701(N) 076 52 30.43447(W)   ADJUSTED
 JV5934  ______________________________________________________________________
 JV5934  GEOID HEIGHT    -        -32.239 (meters)                     GEOID18
 JV5934  LAPLACE CORR    -         -4.87  (seconds)                    DEFLEC18
 JV5934  HORZ ORDER      -  THIRD
 JV5934
 JV5934.The horizontal coordinates were established by classical geodetic methods
 JV5934.and adjusted by the National Geodetic Survey in January 1992.
 JV5934
 JV5934.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5934.GEOID18 height accuracy estimate available here.
 JV5934
 JV5934.Click photographs - Photos may exist for this station.
 JV5934
 JV5934.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5934
 JV5934. The following values were computed from the NAD 83(1991) position.
 JV5934
 JV5934;                    North         East     Units Scale Factor Converg.
 JV5934;SPC MD       -   151,786.329   410,812.164   MT  0.99995365   +0 04 42.2
 JV5934;SPC MD       -   497,985.65  1,347,806.24   sFT  0.99995365   +0 04 42.2
 JV5934;UTM  18      - 4,322,220.864   337,701.658   MT  0.99992435   -1 10 52.2
 JV5934
 JV5934_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3770122220(NAD 83)
 JV5934
 JV5934                          SUPERSEDED SURVEY CONTROL
 JV5934
 JV5934  NAD 83(1986)-  39 02 02.34571(N)    076 52 30.44504(W) AD(       ) 3
 JV5934  NAD 27      -  39 02 01.95173(N)    076 52 31.54269(W) AD(       ) 3
 JV5934
 JV5934.Superseded values are not recommended for survey control.
 JV5934
 JV5934.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5934.See file dsdata.pdf to determine how the superseded data were derived.
 JV5934
 JV5934_MARKER: 86 = CUPOLA
 JV5934
 JV5934  HISTORY     - Date     Condition        Report By
 JV5934  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV5934  HISTORY     - 1983     GOOD             LOCENG
 JV5934
 JV5934                          STATION DESCRIPTION
 JV5934
 JV5934'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5934'THE STATION IS THE CENTER OF THE TOP OF THE BELTSVILLE
 JV5934'U. S. DEPARTMENT OF AGRICULTURE ADMINISTRATION BUILDING
 JV5934'CUPOLA.  IT IS LOCATED 0.2 MILE NORTH OF THE INTERSECTION OF CENTER
 JV5934'ROAD AND POWDER MILL ROAD, AND IS ABOUT 95 FEET ABOVE THE GROUND.
 JV5934
 JV5934                          STATION RECOVERY (1983)
 JV5934
 JV5934'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (SAO)
 JV5934'STATION RECOVERED GOOD.
 JV5934'
 JV5934'LOCATION AS DESCRIBED IS CORRECT.  HOWEVER THE BLDG IS NOW DESIGNATED
 JV5934'AS BUILDING 307.  THE AREA IS NOW NAMED THE BELTSVILLE AGRICULTURAL
 JV5934'RESEARCH CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5943 ***********************************************************************
 JV5943  DESIGNATION -  BELTSVILLE DA ANIMAL RSCH BLDG
 JV5943  PID         -  JV5943
 JV5943  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5943  COUNTRY     -  US
 JV5943  USGS QUAD   -  BELTSVILLE (2016)
 JV5943
 JV5943                         *CURRENT SURVEY CONTROL
 JV5943  ______________________________________________________________________
 JV5943* NAD 83(1991) POSITION- 39 02 00.66506(N) 076 53 06.04077(W)   ADJUSTED
 JV5943  ______________________________________________________________________
 JV5943  GEOID HEIGHT    -        -32.215 (meters)                     GEOID18
 JV5943  LAPLACE CORR    -         -4.72  (seconds)                    DEFLEC18
 JV5943  HORZ ORDER      -  THIRD
 JV5943
 JV5943.The horizontal coordinates were established by classical geodetic methods
 JV5943.and adjusted by the National Geodetic Survey in January 1992.
 JV5943
 JV5943.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5943.GEOID18 height accuracy estimate available here.
 JV5943
 JV5943.Click photographs - Photos may exist for this station.
 JV5943
 JV5943.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5943
 JV5943. The following values were computed from the NAD 83(1991) position.
 JV5943
 JV5943;                    North         East     Units Scale Factor Converg.
 JV5943;SPC MD       -   151,733.339   409,955.890   MT  0.99995362   +0 04 19.8
 JV5943;SPC MD       -   497,811.80  1,344,996.95   sFT  0.99995362   +0 04 19.8
 JV5943;UTM  18      - 4,322,186.710   336,844.449   MT  0.99992779   -1 11 14.6
 JV5943
 JV5943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3684422186(NAD 83)
 JV5943
 JV5943                          SUPERSEDED SURVEY CONTROL
 JV5943
 JV5943  NAD 83(1986)-  39 02 00.66380(N)    076 53 06.05136(W) AD(       ) 3
 JV5943  NAD 27      -  39 02 00.26963(N)    076 53 07.14844(W) AD(       ) 3
 JV5943
 JV5943.Superseded values are not recommended for survey control.
 JV5943
 JV5943.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5943.See file dsdata.pdf to determine how the superseded data were derived.
 JV5943
 JV5943_MARKER: 86 = CUPOLA
 JV5943
 JV5943  HISTORY     - Date     Condition        Report By
 JV5943  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV5943  HISTORY     - 1983     GOOD             LOCENG
 JV5943
 JV5943                          STATION DESCRIPTION
 JV5943
 JV5943'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5943'THE STATION IS THE CENTER OF THE TOP OF THE BELTSVILLE
 JV5943'U.S. DEPARTMENT OF AGRICULTURE ANIMAL RESEARCH BUILDING CUPOLA
 JV5943'LOCATED 0.3 MILE NORTHWEST OF THE INTERSECTION OF ANIMAL HUSBANDRY
 JV5943'ROAD AND POWDER MILL ROAD ON THE NATIONAL AGRICULTURAL RESEARCH
 JV5943'CENTER GROUNDS.  IT HAS AN OVERALL HEIGHT OF ABOUT 85 FEET.
 JV5943
 JV5943                          STATION RECOVERY (1983)
 JV5943
 JV5943'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (SAO)
 JV5943'STATION RECOVERED GOOD.
 JV5943'
 JV5943'LOCATION CORRECT BUILDING NOW DESIGNATED AS BUILDING 2.50.  THE AREA
 JV5943'IS NOW NAMED THE BELTSVILLE AGRICULTURAL RESEARCH CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5963 ***********************************************************************
 JV5963  DESIGNATION -  BELTSVILLE DA PLANT ADM DOME
 JV5963  PID         -  JV5963
 JV5963  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5963  COUNTRY     -  US
 JV5963  USGS QUAD   -  BELTSVILLE (2016)
 JV5963
 JV5963                         *CURRENT SURVEY CONTROL
 JV5963  ______________________________________________________________________
 JV5963* NAD 83(1991) POSITION- 39 01 34.31959(N) 076 55 24.18748(W)   ADJUSTED
 JV5963  ______________________________________________________________________
 JV5963  GEOID HEIGHT    -        -32.129 (meters)                     GEOID18
 JV5963  LAPLACE CORR    -         -4.14  (seconds)                    DEFLEC18
 JV5963  HORZ ORDER      -  THIRD
 JV5963
 JV5963.The horizontal coordinates were established by classical geodetic methods
 JV5963.and adjusted by the National Geodetic Survey in January 1992.
 JV5963
 JV5963.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5963.GEOID18 height accuracy estimate available here.
 JV5963
 JV5963.Click photographs - Photos may exist for this station.
 JV5963
 JV5963.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5963
 JV5963. The following values were computed from the NAD 83(1991) position.
 JV5963
 JV5963;                    North         East     Units Scale Factor Converg.
 JV5963;SPC MD       -   150,917.454   406,634.087   MT  0.99995328   +0 02 53.1
 JV5963;SPC MD       -   495,135.01  1,334,098.67   sFT  0.99995328   +0 02 53.1
 JV5963;UTM  18      - 4,321,444.053   333,505.579   MT  0.99994134   -1 12 41.0
 JV5963
 JV5963_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3350521444(NAD 83)
 JV5963
 JV5963                          SUPERSEDED SURVEY CONTROL
 JV5963
 JV5963  NAD 83(1986)-  39 01 34.31835(N)    076 55 24.19800(W) AD(       ) 3
 JV5963  NAD 27      -  39 01 33.92402(N)    076 55 25.29043(W) AD(       ) 3
 JV5963
 JV5963.Superseded values are not recommended for survey control.
 JV5963
 JV5963.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5963.See file dsdata.pdf to determine how the superseded data were derived.
 JV5963
 JV5963_MARKER: 87 = DOME
 JV5963
 JV5963  HISTORY     - Date     Condition        Report By
 JV5963  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5963  HISTORY     - 1970     GOOD             NGS
 JV5963  HISTORY     - 1983     GOOD             LOCENG
 JV5963
 JV5963                          STATION DESCRIPTION
 JV5963
 JV5963'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5963'STATION IS LOCATED ON TOP OF THE DEPARTMENT OF AGRICULTURE PLANT
 JV5963'INDUSTRY STATION, ADMINISTRATION BUILDING ABOUT 1-1/4 MILES
 JV5963'SOUTHWEST OF BELTSVILLE.  STATION IS A DOME SHAPED OBJECT ABOUT 90
 JV5963'FEET HIGH AND HAS A CLOCK ON EACH SIDE OF DOME.  THE POINT
 JV5963'INTERSECTED WAS THE TOP OF DOME.
 JV5963
 JV5963                          STATION RECOVERY (1970)
 JV5963
 JV5963'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5963'THE STATION RECOVERED AS DESCRIBED.
 JV5963'
 JV5963'THE STATION NAME, BELTSVILLE USDA PLANT INDUSTRY ADMINISTRATION
 JV5963'BLDG, DOME.
 JV5963
 JV5963                          STATION RECOVERY (1983)
 JV5963
 JV5963'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (SAO)
 JV5963'STATION RECOVERED GOOD.
 JV5963'
 JV5963'LOCATION CORRECT.  CURRENTLY THE BUILDING IS KNOWN AS BUILDING 003.
 JV5963'AREA NOW KNOWN AS BELTSVILLE AGRICULTURAL RESEARCH CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5868 ***********************************************************************
 JV5868  DESIGNATION -  BELTSVILLE DA RSCH CTR S TANK
 JV5868  PID         -  JV5868
 JV5868  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5868  COUNTRY     -  US
 JV5868  USGS QUAD   -  LAUREL (2016)
 JV5868
 JV5868                         *CURRENT SURVEY CONTROL
 JV5868  ______________________________________________________________________
 JV5868* NAD 83(1991) POSITION- 39 01 01.28751(N) 076 51 39.53822(W)   ADJUSTED
 JV5868  ______________________________________________________________________
 JV5868  GEOID HEIGHT    -        -32.292 (meters)                     GEOID18
 JV5868  LAPLACE CORR    -         -5.18  (seconds)                    DEFLEC18
 JV5868  HORZ ORDER      -  THIRD
 JV5868
 JV5868.The horizontal coordinates were established by classical geodetic methods
 JV5868.and adjusted by the National Geodetic Survey in January 1992.
 JV5868
 JV5868.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5868.GEOID18 height accuracy estimate available here.
 JV5868
 JV5868.Click photographs - Photos may exist for this station.
 JV5868
 JV5868.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5868
 JV5868. The following values were computed from the NAD 83(1991) position.
 JV5868
 JV5868;                    North         East     Units Scale Factor Converg.
 JV5868;SPC MD       -   149,905.250   412,039.098   MT  0.99995288   +0 05 14.1
 JV5868;SPC MD       -   491,814.14  1,351,831.61   sFT  0.99995288   +0 05 14.1
 JV5868;UTM  18      - 4,320,313.334   338,886.917   MT  0.99991963   -1 10 18.6
 JV5868
 JV5868_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3888620313(NAD 83)
 JV5868
 JV5868                          SUPERSEDED SURVEY CONTROL
 JV5868
 JV5868  NAD 83(1986)-  39 01 01.28598(N)    076 51 39.54914(W) AD(       ) 3
 JV5868  NAD 27      -  39 01 00.89055(N)    076 51 40.64979(W) AD(       ) 3
 JV5868
 JV5868.Superseded values are not recommended for survey control.
 JV5868
 JV5868.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5868.See file dsdata.pdf to determine how the superseded data were derived.
 JV5868
 JV5868_MARKER: 53 = ELEVATED TANK
 JV5868_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5868+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5868
 JV5868  HISTORY     - Date     Condition        Report By
 JV5868  HISTORY     - 1942     FIRST OBSERVED   CGS
 JV5868  HISTORY     - 1943     GOOD             CGS
 JV5868  HISTORY     - 1957     GOOD             CGS
 JV5868  HISTORY     - 1962     GOOD             CGS
 JV5868  HISTORY     - 1970     GOOD             NGS
 JV5868  HISTORY     - 20110315 GOOD             GEOCAC
 JV5868
 JV5868                          STATION DESCRIPTION
 JV5868
 JV5868'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 JV5868'THIS INTERSECTION STATION IS THE WATER TANK WHICH IS LOCATED ABOUT
 JV5868'1 MILE NE OF THE TOWN OF GREENBELT, ON THE PROPERTY OF THE
 JV5868'U.S. DEPT. OF AGRICULTURE RESEARCH BELT.  IT IS A STEEL BOWL
 JV5868'SUPPORTED ATOP A FOUR-LEGGED STEEL STRUCTURE, AN OVERALL HEIGHT
 JV5868'OF ABOUT 100 FEET.  THE ENTIRE STRUCTURE IS PAINTED IN ALTERNATE
 JV5868'ORANGE AND WHITE STRIPES.  THE BALL AT THE APEX OF THE ROOF WAS
 JV5868'THE POINT OBSERVED UPON.
 JV5868
 JV5868                          STATION RECOVERY (1943)
 JV5868
 JV5868'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (WHB)
 JV5868'STATION IS THE CENTER OF THE CONICAL-TOPPED, CIRCULAR-BOTTOMED,
 JV5868'ROUND STEEL WATER TANK, SUPPORTED ON FOUR STEEL LEGS, LOCATED
 JV5868'ABOUT 100 YD. W OF THE HEADQUARTERS BUILDING OF THE HILL CULTURE
 JV5868'FARM, ON THE SOIL CONSERVATION TRACT, ABOUT 1 MI. S-SE OF THE
 JV5868'MAIN GROUP OF BUILDINGS AT THE DEPARTMENT OF AGRICULTURE
 JV5868'BELTSVILLE EXPERIMENT STATION, APPROXIMATELY 14 MI. NE OF
 JV5868'WASHINGTON, D.C.
 JV5868'
 JV5868'AT PRESENT THE CONICAL TOP OF THE TANK IS PAINTED RED, THE UPPER
 JV5868'HALF WHITE, THE LOWER HALF AND LEGS ARE RED.
 JV5868
 JV5868                          STATION RECOVERY (1957)
 JV5868
 JV5868'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5868'STATION IS LOCATED AT THE SOIL CONSERVATION DIVISION OF THE
 JV5868'DEPARTMENT OF AGRICULTURE BELTSVILLE RESEARCH CENTER ABOUT 0.7
 JV5868'MI. NE OF GREENBELT.  STATION IS OF STEEL CONSTRUCTION ABOUT 125
 JV5868'FT. HIGH, HAS FOUR LEGS AND PAINTED RED WITH A WHITE BELT NEAR THE
 JV5868'TOP OF TANK.  THE POINT INTERSECTED WAS THE BALL FINIAL.
 JV5868
 JV5868                          STATION RECOVERY (1962)
 JV5868
 JV5868'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 JV5868'THE STATION WAS RECOVERED AS DESCRIBED AND FOUND IN GOOD
 JV5868'CONDITION.  THE NAME HAS BEEN CHANGED FROM GREENBELT, RESEARCH
 JV5868'BELT TANK TO BELTSVILLE, EXPERIMENTAL STATION WATER TANK.
 JV5868
 JV5868                          STATION RECOVERY (1970)
 JV5868
 JV5868'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5868'THE STATION WAS RECOVERED AS DESCRIBED.
 JV5868
 JV5868                          STATION RECOVERY (2011)
 JV5868
 JV5868'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5868'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5937 ***********************************************************************
 JV5937  DESIGNATION -  BELTSVILLE DA RSCH CTR N TANK
 JV5937  PID         -  JV5937
 JV5937  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5937  COUNTRY     -  US
 JV5937  USGS QUAD   -  BELTSVILLE (2016)
 JV5937
 JV5937                         *CURRENT SURVEY CONTROL
 JV5937  ______________________________________________________________________
 JV5937* NAD 83(1991) POSITION- 39 02 10.16126(N) 076 52 33.78682(W)   ADJUSTED
 JV5937  ______________________________________________________________________
 JV5937  GEOID HEIGHT    -        -32.234 (meters)                     GEOID18
 JV5937  LAPLACE CORR    -         -4.81  (seconds)                    DEFLEC18
 JV5937  HORZ ORDER      -  THIRD
 JV5937
 JV5937.The horizontal coordinates were established by classical geodetic methods
 JV5937.and adjusted by the National Geodetic Survey in January 1992.
 JV5937
 JV5937.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5937.GEOID18 height accuracy estimate available here.
 JV5937
 JV5937.Click photographs - Photos may exist for this station.
 JV5937
 JV5937.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5937
 JV5937. The following values were computed from the NAD 83(1991) position.
 JV5937
 JV5937;                    North         East     Units Scale Factor Converg.
 JV5937;SPC MD       -   152,027.182   410,731.212   MT  0.99995375   +0 04 40.1
 JV5937;SPC MD       -   498,775.85  1,347,540.65   sFT  0.99995375   +0 04 40.1
 JV5937;UTM  18      - 4,322,463.432   337,626.022   MT  0.99992465   -1 10 54.5
 JV5937
 JV5937_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3762622463(NAD 83)
 JV5937
 JV5937                          SUPERSEDED SURVEY CONTROL
 JV5937
 JV5937  NAD 83(1986)-  39 02 10.16000(N)    076 52 33.79719(W) AD(       ) 3
 JV5937  NAD 27      -  39 02 09.76584(N)    076 52 34.89429(W) AD(       ) 3
 JV5937
 JV5937.Superseded values are not recommended for survey control.
 JV5937
 JV5937.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5937.See file dsdata.pdf to determine how the superseded data were derived.
 JV5937
 JV5937_MARKER: 53 = ELEVATED TANK
 JV5937
 JV5937  HISTORY     - Date     Condition        Report By
 JV5937  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5937  HISTORY     - 1970     GOOD             NGS
 JV5937
 JV5937                          STATION DESCRIPTION
 JV5937
 JV5937'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5937'STATION IS LOCATED AT THE DEPARTMENT OF AGRICULTURE PLANT
 JV5937'INDUSTRY STATION, AREA 3 ABOUT 2.0 MILES EAST OF
 JV5937'BELTSVILLE.  STATION IS OF STEEL CONSTRUCTION ABOUT 75 FEET HIGH,
 JV5937'HAS FOUR LEGS AND PAINTED SILVER.  THE POINT INTERSECTED WAS THE
 JV5937'BALL FINIAL.
 JV5937
 JV5937                          STATION RECOVERY (1970)
 JV5937
 JV5937'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5937'THE STATION WAS RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5884 ***********************************************************************
 JV5884  DESIGNATION -  BELTSVILLE POWDER MILL WSSC TK
 JV5884  PID         -  JV5884
 JV5884  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5884  COUNTRY     -  US
 JV5884  USGS QUAD   -  LAUREL (2016)
 JV5884
 JV5884                         *CURRENT SURVEY CONTROL
 JV5884  ______________________________________________________________________
 JV5884* NAD 83(1991) POSITION- 39 02 11.46012(N) 076 51 44.77346(W)   ADJUSTED
 JV5884  ______________________________________________________________________
 JV5884  GEOID HEIGHT    -        -32.269 (meters)                     GEOID18
 JV5884  LAPLACE CORR    -         -5.11  (seconds)                    DEFLEC18
 JV5884  HORZ ORDER      -  THIRD
 JV5884
 JV5884.The horizontal coordinates were established by classical geodetic methods
 JV5884.and adjusted by the National Geodetic Survey in January 1992.
 JV5884
 JV5884.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5884.GEOID18 height accuracy estimate available here.
 JV5884
 JV5884.Click photographs - Photos may exist for this station.
 JV5884
 JV5884.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5884
 JV5884. The following values were computed from the NAD 83(1991) position.
 JV5884
 JV5884;                    North         East     Units Scale Factor Converg.
 JV5884;SPC MD       -   152,068.923   411,909.899   MT  0.99995377   +0 05 10.8
 JV5884;SPC MD       -   498,912.79  1,351,407.73   sFT  0.99995377   +0 05 10.8
 JV5884;UTM  18      - 4,322,479.251   338,805.305   MT  0.99991995   -1 10 23.7
 JV5884
 JV5884_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3880522479(NAD 83)
 JV5884
 JV5884                          SUPERSEDED SURVEY CONTROL
 JV5884
 JV5884  NAD 83(1986)-  39 02 11.45867(N)    076 51 44.78407(W) AD(       ) 3
 JV5884  NAD 27      -  39 02 11.06462(N)    076 51 45.88307(W) AD(       ) 3
 JV5884
 JV5884.Superseded values are not recommended for survey control.
 JV5884
 JV5884.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5884.See file dsdata.pdf to determine how the superseded data were derived.
 JV5884
 JV5884_MARKER: 53 = ELEVATED TANK
 JV5884
 JV5884  HISTORY     - Date     Condition        Report By
 JV5884  HISTORY     - 1970     FIRST OBSERVED   WSSC
 JV5884  HISTORY     - 1983     GOOD             USPSQD
 JV5884
 JV5884                          STATION DESCRIPTION
 JV5884
 JV5884'DESCRIBED BY WASH SUBURB SAN COMM 1970 (JBJ)
 JV5884'THE STATION IS THE CENTER OF THE TOP OF THE BELTSVILLE POWDER
 JV5884'MILL ROAD WASHINGTON SUBURBAN SANITATION COMMISSION TANK.  IT IS
 JV5884'110 FEET HIGH DOUBLE ELIPSOIDAL ELEVATED TANK.
 JV5884'
 JV5884'TO REACH THE STATION FROM THE INTERSECTION OF ENGINEER ROAD AND
 JV5884'POWDER MILL ROAD, GO NORTH ON A GRAVEL ROAD FOR 0.1 MILE TO A
 JV5884'FORK, BEAR TO THE LEFT AND GO NORTHWESTERLY FOR 0.1 MILE TO
 JV5884'ANOTHER FORK.  BEAR TO THE LEFT AND GO WESTERLY FOR 0.05 MILE TO
 JV5884'THE STATION.
 JV5884
 JV5884                          STATION RECOVERY (1983)
 JV5884
 JV5884'RECOVERY NOTE BY US POWER SQUADRON 1983 (WAY)
 JV5884'STATION RECOVERED GOOD.
 JV5884'
 JV5884'RECOVERED BY FOLLOWING PREVIOUS DIRECTIONS TOWER IS PAINTED GREEN
 JV5884'ROAD SECURED BY LOCKED CHAIN LINK GATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5968 ***********************************************************************
 JV5968  DESIGNATION -  BELTSVILLE ST JOHNS EPIS CH
 JV5968  PID         -  JV5968
 JV5968  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5968  COUNTRY     -  US
 JV5968  USGS QUAD   -  BELTSVILLE (2016)
 JV5968
 JV5968                         *CURRENT SURVEY CONTROL
 JV5968  ______________________________________________________________________
 JV5968* NAD 83(1991) POSITION- 39 02 05.78706(N) 076 54 28.99747(W)   ADJUSTED
 JV5968  ______________________________________________________________________
 JV5968  GEOID HEIGHT    -        -32.158 (meters)                     GEOID18
 JV5968  LAPLACE CORR    -         -4.50  (seconds)                    DEFLEC18
 JV5968  HORZ ORDER      -  THIRD
 JV5968
 JV5968.The horizontal coordinates were established by classical geodetic methods
 JV5968.and adjusted by the National Geodetic Survey in January 1992.
 JV5968
 JV5968.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5968.GEOID18 height accuracy estimate available here.
 JV5968
 JV5968.Click photographs - Photos may exist for this station.
 JV5968
 JV5968.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5968
 JV5968. The following values were computed from the NAD 83(1991) position.
 JV5968
 JV5968;                    North         East     Units Scale Factor Converg.
 JV5968;SPC MD       -   151,889.021   407,960.589   MT  0.99995369   +0 03 27.7
 JV5968;SPC MD       -   498,322.56  1,338,450.70   sFT  0.99995369   +0 03 27.7
 JV5968;UTM  18      - 4,322,386.213   334,853.096   MT  0.99993584   -1 12 07.0
 JV5968
 JV5968_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3485322386(NAD 83)
 JV5968
 JV5968                          SUPERSEDED SURVEY CONTROL
 JV5968
 JV5968  NAD 83(1986)-  39 02 05.78597(N)    076 54 29.00820(W) AD(       ) 3
 JV5968  NAD 27      -  39 02 05.39125(N)    076 54 30.10154(W) AD(       ) 3
 JV5968
 JV5968.Superseded values are not recommended for survey control.
 JV5968
 JV5968.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5968.See file dsdata.pdf to determine how the superseded data were derived.
 JV5968
 JV5968_MARKER: 90 = CHURCH SPIRE
 JV5968
 JV5968  HISTORY     - Date     Condition        Report By
 JV5968  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV5968  HISTORY     - 19920808 GOOD             USPSQD
 JV5968
 JV5968                          STATION DESCRIPTION
 JV5968
 JV5968'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5968'THE STATION IS THE CENTER OF THE TOP OF THE BELTSVILLE SAINT JOHNS
 JV5968'EPISCOPAL CHURCH SPIRE.  IT IS ABOUT 60 FEET ABOVE THE GROUND.
 JV5968'
 JV5968'THE STATION IS LOCATED AT THE SOUTHWEST CORNER OF POWDER MILL
 JV5968'ROAD AND U.S. HIGHWAY 1 IN BELTSVILLE.
 JV5968
 JV5968                          STATION RECOVERY (1992)
 JV5968
 JV5968'RECOVERY NOTE BY US POWER SQUADRON 1992 (JLF)
 JV5968'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6151 ***********************************************************************
 JV6151  DESIGNATION -  BELTWAY GPS E10
 JV6151  PID         -  JV6151
 JV6151  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6151  COUNTRY     -  US
 JV6151  USGS QUAD   -  BELTSVILLE (2016)
 JV6151
 JV6151                         *CURRENT SURVEY CONTROL
 JV6151  ______________________________________________________________________
 JV6151* NAD 83(2011) POSITION- 39 00 52.07527(N) 076 54 27.33931(W)   ADJUSTED
 JV6151* NAD 83(2011) ELLIP HT-     0.282 (meters)        (06/27/12)   ADJUSTED
 JV6151* NAD 83(2011) EPOCH   -  2010.00
 JV6151* NAVD 88 ORTHO HEIGHT -    32.4   (meters)      106.    (feet) VERTCON3
 JV6151  ______________________________________________________________________
 JV6151  GEOID HEIGHT    -        -32.175 (meters)                     GEOID18
 JV6151  NAD 83(2011) X  -  1,124,074.966 (meters)                     COMP
 JV6151  NAD 83(2011) Y  - -4,833,326.325 (meters)                     COMP
 JV6151  NAD 83(2011) Z  -  3,993,565.076 (meters)                     COMP
 JV6151  LAPLACE CORR    -         -4.70  (seconds)                    DEFLEC18
 JV6151
 JV6151  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6151  Standards:
 JV6151         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6151            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6151  -------------------------------------------------------------------
 JV6151  NETWORK    2.24   3.86           1.02   0.77   1.97     -0.10783667
 JV6151  -------------------------------------------------------------------
 JV6151  Click here for local accuracies and other accuracy information.
 JV6151
 JV6151.The horizontal coordinates were established by GPS observations
 JV6151.and adjusted by the National Geodetic Survey in June 2012.
 JV6151
 JV6151.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6151.been affixed to the stable North American tectonic plate. See 
 JV6151.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6151
 JV6151.The horizontal coordinates are valid at the epoch date displayed above
 JV6151.which is a decimal equivalence of Year/Month/Day.
 JV6151
 JV6151.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6151.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6151
 JV6151.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6151.GEOID18 height accuracy estimate available here.
 JV6151
 JV6151.Click photographs - Photos may exist for this station.
 JV6151
 JV6151.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6151
 JV6151.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6151
 JV6151.The ellipsoidal height was determined by GPS observations
 JV6151.and is referenced to NAD 83.
 JV6151
 JV6151. The following values were computed from the NAD 83(2011) position.
 JV6151
 JV6151;                    North         East     Units Scale Factor Converg.
 JV6151;SPC MD       -   149,616.062   408,002.768   MT  0.99995277   +0 03 28.8
 JV6151;SPC MD       -   490,865.36  1,338,589.08   sFT  0.99995277   +0 03 28.8
 JV6151;UTM  18      - 4,320,112.915   334,845.309   MT  0.99993587   -1 12 04.1
 JV6151
 JV6151!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6151!SPC MD       -   0.99999996  x   0.99995277  =   0.99995273
 JV6151!UTM  18      -   0.99999996  x   0.99993587  =   0.99993583
 JV6151
 JV6151_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3484520112(NAD 83)
 JV6151
 JV6151                          SUPERSEDED SURVEY CONTROL
 JV6151
 JV6151  NAD 83(2007)-  39 00 52.07588(N)    076 54 27.34012(W) AD(2002.00) 0
 JV6151  ELLIP H (02/10/07)    0.294  (m)                       GP(2002.00)    
 JV6151  ELLIP H (09/18/02)    0.294  (m)                       GP(       ) 4 2
 JV6151  NAD 83(1991)-  39 00 52.07583(N)    076 54 27.33970(W) AD(       ) 1
 JV6151  NAD 83(1986)-  39 00 52.07460(N)    076 54 27.35044(W) AD(       ) 1
 JV6151  NGVD 29 (05/23/89)   32.7    (m)  RAPSU86  model used  GPS OBS        
 JV6151
 JV6151.Superseded values are not recommended for survey control.
 JV6151
 JV6151.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6151.See file dsdata.pdf to determine how the superseded data were derived.
 JV6151
 JV6151_MARKER: A = ALUMINUM MARKER
 JV6151_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 JV6151+WITH SETTING: INFORMATION.
 JV6151_STAMPING: BELTWAY GPS E10
 JV6151_MARK LOGO: DEWDAV
 JV6151_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 JV6151_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6151_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6151+SATELLITE: SATELLITE OBSERVATIONS - 1988
 JV6151
 JV6151  HISTORY     - Date     Condition        Report By
 JV6151  HISTORY     - 1988     MONUMENTED       DEWDAV
 JV6151  HISTORY     - 20031021 MARK NOT FOUND   URS
 JV6151
 JV6151                          STATION DESCRIPTION
 JV6151
 JV6151'DESCRIBED BY DEWBERRY DAVIS 1988
 JV6151'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MD, NEAR GREENBELT,
 JV6151'2.5 MILES NW OF THE UNIVERSITY OF MARYLAND. THE STATION IS LOCATED AT
 JV6151'THE INTERSECTION OF ROUTE 495 AND THE B+O RAILROAD TRACKS.
 JV6151'TO REACH THE STATION FORM THE INTERSECTION OF U.S. ROUTE 495, THE
 JV6151'BELTWAY, AND KENNELWORTH AVENUE, GO WEST AND NORTH ON ROUTE 495 FOR
 JV6151'1.1 MILES TO STATION ON THE LEFT IN THE MEDIAN STRIP BETWEEN THE INNER
 JV6151'AND OUTER LOOPS.
 JV6151'THE STATION MARK IS A 2.5 INCH ALUMINUM DISK STAMPED ---BELTWAY GPS
 JV6151'E10---, ATTATCHED TO A BERNTSEN 3-D MONUMENT, RECESSED 4 INCHES BELOW
 JV6151'GROUND, AMD ENCASED IN A 5 INCH ROUND ALUMINUM MONUMENT BOX.  THE MARK
 JV6151'IS 5 FEET SOUTH OF THE SOUTH EDGE OF PAVEMENT OF THE OUTER LOOP, AND
 JV6151'APPROXIMATELT 315 FEET FROM THE EAST EDGE OF THE RAILROAD BRIDGE
 JV6151'ABUTMENT.
 JV6151'STATION SUNNY IS VISIBLE FROM THE GROUND AND CAN BE USED AS AN AZIMUTH
 JV6151'MARK.
 JV6151
 JV6151                          STATION RECOVERY (2003)
 JV6151
 JV6151'RECOVERY NOTE BY URS COMPANY 2003
 JV6151'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5207 ***********************************************************************
 JV5207  DESIGNATION -  BELVEDERE HEIGHTS MUN SPIPE
 JV5207  PID         -  JV5207
 JV5207  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5207  COUNTRY     -  US
 JV5207  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5207
 JV5207                         *CURRENT SURVEY CONTROL
 JV5207  ______________________________________________________________________
 JV5207* NAD 83(1991) POSITION- 39 03 15.09256(N) 076 29 50.21983(W)   ADJUSTED
 JV5207  ______________________________________________________________________
 JV5207  GEOID HEIGHT    -        -33.216 (meters)                     GEOID18
 JV5207  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 JV5207  HORZ ORDER      -  THIRD
 JV5207
 JV5207.The horizontal coordinates were established by classical geodetic methods
 JV5207.and adjusted by the National Geodetic Survey in January 1992.
 JV5207
 JV5207.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5207.GEOID18 height accuracy estimate available here.
 JV5207
 JV5207.Click photographs - Photos may exist for this station.
 JV5207
 JV5207.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5207
 JV5207. The following values were computed from the NAD 83(1991) position.
 JV5207
 JV5207;                    North         East     Units Scale Factor Converg.
 JV5207;SPC MD       -   154,141.960   443,513.110   MT  0.99995468   +0 18 55.9
 JV5207;SPC MD       -   505,714.08  1,455,092.60   sFT  0.99995468   +0 18 55.9
 JV5207;UTM  18      - 4,323,857.102   370,443.501   MT  0.99980668   -0 56 36.6
 JV5207
 JV5207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7044323857(NAD 83)
 JV5207
 JV5207                          SUPERSEDED SURVEY CONTROL
 JV5207
 JV5207  NAD 83(1986)-  39 03 15.08834(N)    076 29 50.23157(W) AD(       ) 3
 JV5207  NAD 27      -  39 03 14.68741(N)    076 29 51.36719(W) AD(       ) 3
 JV5207
 JV5207.Superseded values are not recommended for survey control.
 JV5207
 JV5207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5207.See file dsdata.pdf to determine how the superseded data were derived.
 JV5207
 JV5207_MARKER: 52 = STANDPIPE TANK
 JV5207_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5207+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2005
 JV5207
 JV5207  HISTORY     - Date     Condition        Report By
 JV5207  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5207  HISTORY     - 1985     GOOD             USPSQD
 JV5207  HISTORY     - 20011124 GOOD             USPSQD
 JV5207  HISTORY     - 20031002 GOOD             USPSQD
 JV5207  HISTORY     - 20050720 GOOD             USPSQD
 JV5207
 JV5207                          STATION DESCRIPTION
 JV5207
 JV5207'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5207'THE STATION IS LOCATED ABOUT 6 MI. N OF ANNAPOLIS AND ABOUT 2 MI.
 JV5207'E OF U.S. HIGHWAY 2.  IT IS PAINTED SILVER AND THE POINT
 JV5207'INTERSECTED WAS THE BALL ON TOP.
 JV5207'
 JV5207'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 2 AND MAGO
 JV5207'VISTA ROAD, GO E ON MAGO VISTA ROAD FOR 1.4 MI. TO FORKS, TAKE
 JV5207'RIGHT FORK FOR 0.15 MI. TO SIDE STREET LEFT, TURN LEFT FOR 0.1
 JV5207'MI., TURN RIGHT FOR 0.1 MI., TURN LEFT FOR 0.05 MI. TO THE
 JV5207'STATION ON THE RIGHT.
 JV5207
 JV5207                          STATION RECOVERY (1985)
 JV5207
 JV5207'RECOVERY NOTE BY US POWER SQUADRON 1985 (WRB)
 JV5207'STATION FOUND AS DESCRIBED IN GOOD CONDITION, STATION IS NOW PAINTED
 JV5207'PALE GREEN.
 JV5207
 JV5207                          STATION RECOVERY (2001)
 JV5207
 JV5207'RECOVERY NOTE BY US POWER SQUADRON 2001 (CRA)
 JV5207'STANDPIPE IS PAINTED WHITE
 JV5207
 JV5207                          STATION RECOVERY (2003)
 JV5207
 JV5207'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5207'RECOVERED IN GOOD CONDITION.
 JV5207
 JV5207                          STATION RECOVERY (2005)
 JV5207
 JV5207'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV5207'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6730 ***********************************************************************
 HV6730  DESIGNATION -  BEN
 HV6730  PID         -  HV6730
 HV6730  STATE/COUNTY-  MD/ST MARYS
 HV6730  COUNTRY     -  US
 HV6730  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6730
 HV6730                         *CURRENT SURVEY CONTROL
 HV6730  ______________________________________________________________________
 HV6730* NAD 83(1991) POSITION- 38 18 16.59699(N) 076 28 02.81417(W)   ADJUSTED
 HV6730* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6730  ______________________________________________________________________
 HV6730  GEOID HEIGHT    -        -34.391 (meters)                     GEOID18
 HV6730  LAPLACE CORR    -         -5.57  (seconds)                    DEFLEC18
 HV6730  HORZ ORDER      -  SECOND
 HV6730
 HV6730.The horizontal coordinates were established by classical geodetic methods
 HV6730.and adjusted by the National Geodetic Survey in January 1992.
 HV6730
 HV6730.The orthometric height was scaled from a topographic map.
 HV6730
 HV6730.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6730.GEOID18 height accuracy estimate available here.
 HV6730
 HV6730.Click photographs - Photos may exist for this station.
 HV6730
 HV6730.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6730
 HV6730. The following values were computed from the NAD 83(1991) position.
 HV6730
 HV6730;                    North         East     Units Scale Factor Converg.
 HV6730;SPC MD       -    70,950.476   446,580.876   MT  0.99999920   +0 20 03.3
 HV6730;SPC MD       -   232,776.69  1,465,157.42   sFT  0.99999920   +0 20 03.3
 HV6730;UTM  18      - 4,240,631.618   371,693.415   MT  0.99980274   -0 54 35.0
 HV6730
 HV6730!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6730!SPC MD       -   1.00000528  x   0.99999920  =   1.00000448
 HV6730!UTM  18      -   1.00000528  x   0.99980274  =   0.99980802
 HV6730
 HV6730:                Primary Azimuth Mark                     Grid Az
 HV6730:SPC MD       -  DRUM PT LIGHTHOUSE                       067 46 35.2
 HV6730:UTM  18      -  DRUM PT LIGHTHOUSE                       069 01 13.5
 HV6730
 HV6730_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7169340631(NAD 83)
 HV6730
 HV6730|---------------------------------------------------------------------|
 HV6730| PID    Reference Object                     Distance      Geod. Az  |
 HV6730|                                                           dddmmss.s |
 HV6730| HV6710 DRUM PT LIGHTHOUSE                  APPROX. 4.4 KM 0680638.5 |
 HV6730| CX2082 BEN RM TILE                          27.112 METERS 20338     |
 HV6730| HV6728 BEN RM                                8.439 METERS 23615     |
 HV6730|---------------------------------------------------------------------|
 HV6730
 HV6730                          SUPERSEDED SURVEY CONTROL
 HV6730
 HV6730  NAD 83(1986)-  38 18 16.59721(N)    076 28 02.82868(W) AD(       ) 2
 HV6730  NAD 27      -  38 18 16.15300(N)    076 28 03.97900(W) AD(       ) 2
 HV6730  USSD        -  38 18 16.52300(N)    076 28 03.74700(W) AD(       ) 3
 HV6730
 HV6730.Superseded values are not recommended for survey control.
 HV6730
 HV6730.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6730.See file dsdata.pdf to determine how the superseded data were derived.
 HV6730
 HV6730_MARKER: K = CLAY TILE PIPE
 HV6730_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6730_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6730
 HV6730  HISTORY     - Date     Condition        Report By
 HV6730  HISTORY     - 1907     MONUMENTED       MDSFC
 HV6730  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6730  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6730  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6730  HISTORY     - 1960     GOOD             CGS
 HV6730  HISTORY     - 1981     MARK NOT FOUND   MDDNR
 HV6730
 HV6730                          STATION DESCRIPTION
 HV6730
 HV6730'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (OWF)
 HV6730'STATION IS ON THE SOUTHWESTERN SHORE OF PATUXENT RIVER, ABOUT 1 MILE
 HV6730'SSW OF SANDY POINT, AND 1-1/4 MILES SE OF TOWN POINT, ON A CLAY AND
 HV6730'SAND BLUFF, IN A CULTIVATED FIELD, ABOUT 20 FEET ABOVE HIGH WATER,
 HV6730'10 FEET W OF EDGE OF BANK, 3 FEET S OF POINT COVERED WITH SCRUB
 HV6730'PINES, ABOUT 15 YARDS NE OF ONE EDGE OF PLATEAU, 10 YARDS SE OF
 HV6730'ANOTHER EDGE OF PLATEAU, ABOUT 65 YARDS N OF POINT OF WOODS, AND
 HV6730'10 YARDS S OF CUT IN BANK WHICH IS WASHING RAPIDLY.  IT IS 120
 HV6730'METERS BELOW THE OUTLET TO A SMALL LAKE.  STATION MARK IS 6-INCH
 HV6730'TILE PIPE FILLED WITH AND SURROUNDED BY CEMENT, ITS TOP FLUSH WITH
 HV6730'GROUND, AND A LARGE SPIKE MARKING THE CENTER.  REFERENCE MARK IS
 HV6730'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HV6730'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6730'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6730'M.S.F.S. AND U.S.C.S.  ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6730'8.42 METERS (27.62 FEET) FROM STATION IN AZIMUTH 56 DEG 15 MIN.
 HV6730'A VITRIFIED TILE SET IN CEMENT IS AT THE EDGE OF THE BRUSH
 HV6730'AND IS 27.11 METERS (88.9 FEET) FROM THE STATION IN AZIMUTH 23
 HV6730'DEG 38 MIN.  DISTANCES AND AZIMUTHS FROM THE STATION TO OTHER
 HV6730'POINTS OF REFERENCE ARE AS FOLLOWS--TALL PINE TREE, 50 YARDS, 26
 HV6730'DEG 42 MIN.  NAIL IN BLAZE IN 4-INCH PINE TREE, 7.79 METERS
 HV6730'(25.56 FEET), 60 DEG 40 MIN.  NAIL IN BLAZE IN 4-INCH PINE
 HV6730'TREE, 8.77 METERS (28.77 FEET), 111 DEG 48 MIN.  NAIL IN BLAZE
 HV6730'IN 4-INCH PINE TREE, 2.07 METERS (6.79 FEET), 124 DEG 46 MIN.
 HV6730'NEAR END OF PEAK OF MARBURGER HOUSE, 2 MILES, 160 DEG 19
 HV6730'MIN.  NEAR END OF PEAK OF ROOF OF LARGE 2 1/2-STORY BUILDING AT
 HV6730'PEARSONS, 2-1/4 MILES, 287 DEG 43 MIN.  NEAR PIAZZA POST OF
 HV6730'MILLSTONE HOTEL, 1-3/4 MILES, 304 DEG 18 MIN.  CHIMNEY OF CRADDOCK
 HV6730'HOUSE, 1-1/4 MILES, 308 DEG 35 MIN.  LARGE CHIMNEY AT THE W END OF
 HV6730'AN OLD HOUSE ON THE E EDGE OF THE FIELD, 311.3 METERS (1,021.3
 HV6730'FEET), 345 DEG 31 MIN.
 HV6730
 HV6730                          STATION RECOVERY (1942)
 HV6730
 HV6730'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV6730'WASHED OFF BANK, FOUND STATION LYING ON BEACH.
 HV6730
 HV6730                          STATION RECOVERY (1942)
 HV6730
 HV6730'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6730'THE FOLLOWING DISCREPANCY WAS NOTED IN THE ORIGINAL DESCRIPTION--
 HV6730'
 HV6730'DELETE IN A CULTIVATED FIELD, SINCE IT IS NOW WOODS.
 HV6730'
 HV6730'THE STATION WAS THOROUGHLY SEARCHED FOR BUT NO TRACE OF IT COULD BE
 HV6730'FOUND.  THE REFERENCE MARK WAS FOUND IN GOOD CONDITION, LOCATED ON
 HV6730'THE SW SHORE OF PATUXENT RIVER ABOUT 3 MILES E OF CALIFORNIA, 1
 HV6730'MILE SW OF SANDY POINT, 1-1/4 MILES SE OF TOWN POINT, ON A CLAY
 HV6730'AND SAND BLUFF, WHICH IS RAPIDLY CAVING, IN THE EDGE OF A WOODS,
 HV6730'ABOUT 20 FEET ABOVE HIGH WATER, 13 FEET FROM BANK, 3.5 FEET N OF
 HV6730'NAIL IN BLAZE IN 12-INCH PINE TREE, 36.4 FEET NW OF A SPIKE IN
 HV6730'BLAZE IN AN 8-INCH PINE TREE.
 HV6730'
 HV6730'THE REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 HV6730'A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH
 HV6730'SQUARE CONCRETE MONUMENT, 2 FEET LONG, WHICH PROJECTS 2 INCHES
 HV6730'ABOVE THE SURFACE OF THE GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HV6730'ARE COUNTERSUNK IN THE TOP OF THE MONUMENT.  THE MARK IS IN GOOD
 HV6730'CONDITION.
 HV6730'
 HV6730'THE REFERENCE MARK SET IN VITRIFIED TILE PIPE COULD NOT BE FOUND.
 HV6730
 HV6730                          STATION RECOVERY (1943)
 HV6730
 HV6730'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (BHR)
 HV6730'THE 1942 RECOVERY NOTE IS ADEQUATE AND CORRECT.  THE REFERENCE MARK
 HV6730'WAS FOUND TO BE IN GOOD CONDITION.
 HV6730'
 HV6730'TWO NEW REFERENCE MARKS HAVE BEEN ESTABLISHED FOR THIS
 HV6730'STATION.  THEY ARE BRONZE DISKS SET IN CONCRETE AT THE CENTERS OF
 HV6730'THE TOPS OF TILES WHICH ARE SET IN BLOCKS OF CONCRETE.
 HV6730'
 HV6730'REFERENCE MARK 1 IS 1/3 THE WAY DOWN THE S SLOPE OF THE RIDGE, 34
 HV6730'FEET FROM THE EDGE OF THE BLUFF, 6.2 FEET SW OF A 6-INCH OAK TREE
 HV6730'ON THE S SLOPE OF THE RIDGE, AND 25.3 FEET NW OF A GROUP OF THREE
 HV6730'OAKS BRANCHING FROM ONE BASE, ALSO ON THE SAME SLOPE.  THE MARK IS
 HV6730'6 INCHES ABOVE THE GROUND.
 HV6730'
 HV6730'REFERENCE MARK 2 IS 26 FEET SW OF THE EDGE OF THE BLUFF, 2 FEET E
 HV6730'OF A PATH RUNNING NW-SE ALONG THE TOP OF THE RIDGE, AND 46 FEET NE
 HV6730'OF AN 8-INCH OAK TREE THAT IS HALFWAY DOWN THE S SLOPE OF THE
 HV6730'RIDGE.  THE MARK IS 2 INCHES ABOVE THE GROUND.
 HV6730
 HV6730                          STATION RECOVERY (1960)
 HV6730
 HV6730'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6730'STATION MARK AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.  THE
 HV6730'PUBLISHED DESCRIPTION BY B. H. R. IN 1943 IS ADEQUATE WITH THE
 HV6730'FOLLOWING EXCEPTION--STATION IS NOW 6 FT. FROM EDGE OF
 HV6730'BLUFF.  REFERENCE MARK NO.1 IS A STANDARD REFERENCE MARK DISK
 HV6730'STAMPED NO.1 1943 AND PROJECTS 2 INCHES.  THE DISK HAS BEEN
 HV6730'REMOVED FROM REFERENCE MARK NO.2.  THE TILE OF THIS MONUMENT
 HV6730'PROJECTS 2 INCHES.
 HV6730
 HV6730                          STATION RECOVERY (1981)
 HV6730
 HV6730'RECOVERY NOTE BY MD DEPT OF NAT RES 1981 (LW)
 HV6730'NOT FOUND - SEARCHED FOR 2 HRS - THERE HAS BEEN CONSIDERABLE EROSION
 HV6730'OF THE SHORELINE AT THIS POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6728 ***********************************************************************
 HV6728  DESIGNATION -  BEN RM
 HV6728  PID         -  HV6728
 HV6728  STATE/COUNTY-  MD/ST MARYS
 HV6728  COUNTRY     -  US
 HV6728  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6728
 HV6728                         *CURRENT SURVEY CONTROL
 HV6728  ______________________________________________________________________
 HV6728* NAD 83(1991) POSITION- 38 18 16.44492(N) 076 28 03.10293(W)   ADJUSTED
 HV6728* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6728  ______________________________________________________________________
 HV6728  GEOID HEIGHT    -        -34.390 (meters)                     GEOID18
 HV6728  LAPLACE CORR    -         -5.57  (seconds)                    DEFLEC18
 HV6728  HORZ ORDER      -  SECOND
 HV6728
 HV6728.The horizontal coordinates were established by classical geodetic methods
 HV6728.and adjusted by the National Geodetic Survey in January 1992.
 HV6728
 HV6728.The orthometric height was scaled from a topographic map.
 HV6728
 HV6728.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6728.GEOID18 height accuracy estimate available here.
 HV6728
 HV6728.Click photographs - Photos may exist for this station.
 HV6728
 HV6728.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6728
 HV6728. The following values were computed from the NAD 83(1991) position.
 HV6728
 HV6728;                    North         East     Units Scale Factor Converg.
 HV6728;SPC MD       -    70,945.746   446,573.888   MT  0.99999921   +0 20 03.1
 HV6728;SPC MD       -   232,761.17  1,465,134.50   sFT  0.99999921   +0 20 03.1
 HV6728;UTM  18      - 4,240,627.042   371,686.326   MT  0.99980277   -0 54 35.1
 HV6728
 HV6728!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6728!SPC MD       -   1.00000528  x   0.99999921  =   1.00000449
 HV6728!UTM  18      -   1.00000528  x   0.99980277  =   0.99980805
 HV6728
 HV6728:                Primary Azimuth Mark                     Grid Az
 HV6728:SPC MD       -  PRESTON WOOLBURN HOUSE CUPOLA            008 12 14.5
 HV6728:UTM  18      -  PRESTON WOOLBURN HOUSE CUPOLA            009 26 52.7
 HV6728
 HV6728_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7168640627(NAD 83)
 HV6728
 HV6728|---------------------------------------------------------------------|
 HV6728| PID    Reference Object                     Distance      Geod. Az  |
 HV6728|                                                           dddmmss.s |
 HV6728| HV6694 SOLOMONS ELEMENTARY SCH S VENT      APPROX. 3.0 KM 0044908.2 |
 HV6728| HV6696 PRESTON WOOLBURN HOUSE CUPOLA       APPROX. 2.7 KM 0083217.6 |
 HV6728| HV6677 USN AIR STA WOODEN ELEV TANK        APPROX. 4.2 KM 1052641.7 |
 HV6728| HV6680 USN AIR STA CONT TWR NAB            APPROX. 4.2 KM 1130843.7 |
 HV6728| HV6683 USN AIR STA CONT TOWER LT SPB       APPROX. 2.6 KM 1412613.3 |
 HV6728| CX2081 BEN RM RP 2                          16.218 METERS 16849     |
 HV6728| CX2080 BEN RM RP 1                           7.464 METERS 28218     |
 HV6728|---------------------------------------------------------------------|
 HV6728
 HV6728                          SUPERSEDED SURVEY CONTROL
 HV6728
 HV6728  NAD 83(1986)-  38 18 16.44518(N)    076 28 03.11735(W) AD(       ) 2
 HV6728  NAD 27      -  38 18 16.00100(N)    076 28 04.26700(W) AD(       ) 2
 HV6728
 HV6728.Superseded values are not recommended for survey control.
 HV6728
 HV6728.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6728.See file dsdata.pdf to determine how the superseded data were derived.
 HV6728
 HV6728
 HV6728  HISTORY     - Date     Condition        Report By
 HV6728  HISTORY     - 1907     MONUMENTED       MDSFC
 HV6728  HISTORY     - 1981     MARK NOT FOUND   MDDNR
 HV6728
 HV6728                          STATION DESCRIPTION
 HV6728
 HV6728'DESCRIBED BY MD DEPT OF NAT RES 1981 (LW)
 HV6728'NOT FOUND - SEARCHED FOR 2 HRS.  THERE HAS BEEN CONSIDERABLE EROSION
 HV6728'OF THE SHORE LINE AT THIS POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6793 ***********************************************************************
 HV6793  DESIGNATION -  BEND
 HV6793  PID         -  HV6793
 HV6793  STATE/COUNTY-  MD/ST MARYS
 HV6793  COUNTRY     -  US
 HV6793  USGS QUAD   -  HOLLYWOOD (2016)
 HV6793
 HV6793                         *CURRENT SURVEY CONTROL
 HV6793  ______________________________________________________________________
 HV6793* NAD 83(1991) POSITION- 38 21 42.09675(N) 076 30 17.55402(W)   ADJUSTED
 HV6793* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6793  ______________________________________________________________________
 HV6793  GEOID HEIGHT    -        -34.227 (meters)                     GEOID18
 HV6793  LAPLACE CORR    -         -4.70  (seconds)                    DEFLEC18
 HV6793  HORZ ORDER      -  THIRD
 HV6793
 HV6793.The horizontal coordinates were established by classical geodetic methods
 HV6793.and adjusted by the National Geodetic Survey in January 1992.
 HV6793
 HV6793.The orthometric height was scaled from a topographic map.
 HV6793
 HV6793.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6793.GEOID18 height accuracy estimate available here.
 HV6793
 HV6793.Click photographs - Photos may exist for this station.
 HV6793
 HV6793.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6793
 HV6793. The following values were computed from the NAD 83(1991) position.
 HV6793
 HV6793;                    North         East     Units Scale Factor Converg.
 HV6793;SPC MD       -    77,268.322   443,272.838   MT  0.99998984   +0 18 38.7
 HV6793;SPC MD       -   253,504.49  1,454,304.30   sFT  0.99998984   +0 18 38.7
 HV6793;UTM  18      - 4,247,018.623   368,523.954   MT  0.99981288   -0 56 02.7
 HV6793
 HV6793!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6793!SPC MD       -   1.00000510  x   0.99998984  =   0.99999494
 HV6793!UTM  18      -   1.00000510  x   0.99981288  =   0.99981798
 HV6793
 HV6793:                Primary Azimuth Mark                     Grid Az
 HV6793:SPC MD       -  BRAD                                     305 44 19.6
 HV6793:UTM  18      -  BRAD                                     306 59 01.0
 HV6793
 HV6793_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6852347018(NAD 83)
 HV6793
 HV6793|---------------------------------------------------------------------|
 HV6793| PID    Reference Object                     Distance      Geod. Az  |
 HV6793|                                                           dddmmss.s |
 HV6793| HV6795 BERTON                              APPROX. 0.5 KM 1262646.3 |
 HV6793| HV6796 CUT                                 APPROX. 0.5 KM 1335322.1 |
 HV6793| CX2084 BEND RM 2                             4.528 METERS 18100     |
 HV6793| CX2083 BEND RM 1                            11.545 METERS 26147     |
 HV6793| HV6792 GROVE                               253.625 METERS 28201     |
 HV6793| HV6787 BRAD                                APPROX. 1.6 KM 3060258.3 |
 HV6793|---------------------------------------------------------------------|
 HV6793
 HV6793                          SUPERSEDED SURVEY CONTROL
 HV6793
 HV6793  NAD 83(1986)-  38 21 42.09641(N)    076 30 17.56823(W) AD(       ) 3
 HV6793  NAD 27      -  38 21 41.64400(N)    076 30 18.72600(W) AD(       ) 3
 HV6793
 HV6793.Superseded values are not recommended for survey control.
 HV6793
 HV6793.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6793.See file dsdata.pdf to determine how the superseded data were derived.
 HV6793
 HV6793_MARKER: DS = TRIANGULATION STATION DISK
 HV6793_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6793_STAMPING: BEND 1943
 HV6793_MARK LOGO: CGS
 HV6793_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6793
 HV6793  HISTORY     - Date     Condition        Report By
 HV6793  HISTORY     - 1943     MONUMENTED       CGS
 HV6793  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6793
 HV6793                          STATION DESCRIPTION
 HV6793
 HV6793'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (BHR)
 HV6793'STATION IS ON THE S BANK OF THE PATUXENT RIVER, ABOUT 3-1/2 MILES
 HV6793'NW OF SOLOMONS ISLAND, AND 1.1 MILES N OF THE N SIDE OF THE
 HV6793'ENTRANCE TO CUCKOLD CREEK.  IT IS ON THE TOP OF A 15-FOOT BLUFF,
 HV6793'600 YARDS NW OF GRASSY POINT CALLED ST. CUTHBERTS WHARF.  IT IS IN
 HV6793'THE MOST E CORNER OF A CULTIVATED FIELD, 15 FEET NW OF A FENCE
 HV6793'AROUND THE GROVE OF TREES IN A SWAMPY CREEK BED, 26.3 FEET N OF A
 HV6793'LARGE DEAD TREE WITH A HAWKS NEST IN THE TOP, AND 37.7 FEET E OF A
 HV6793'CORNER FENCEPOST WHERE FENCELINE BENDS ON S EDGE OF FIELD.  A
 HV6793'SMALL WEATHER-BEATEN SHACK LIES ABOUT 175 YARDS W ON EDGE OF
 HV6793'BLUFF. MARK PROJECTS ABOUT 1 INCH ABOVE GROUND AND IS STAMPED BEND
 HV6793'1943.
 HV6793'
 HV6793'STATION AND REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE AT
 HV6793'THE CENTERS OF THE TOPS OF TILES WHICH ARE SET IN BLOCKS OF
 HV6793'CONCRETE.  THERE IS NO UNDERGROUND MARK.
 HV6793'
 HV6793'REFERENCE MARK 1 IS W OF STATION TOWARD CENTER OF CULTIVATED
 HV6793'FIELD.  IT PROJECTS ABOUT 1 INCH ABOVE GROUND.
 HV6793'
 HV6793'REFERENCE MARK 2 IS S OF STATION ON RANGE WITH THE LARGE DEAD TREE
 HV6793'WITH HAWKS NEST IN TOP AND 1 FOOT N OF FENCE.  IT PROJECTS ABOUT 1
 HV6793'INCH ABOVE GROUND.
 HV6793
 HV6793                          STATION RECOVERY (1960)
 HV6793
 HV6793'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6793'STATION AND REFERENCE MARKS WERE NOT RECOVERED AFTER A THOROUGH
 HV6793'SEARCH OF THE SHORE.  STATION NOW PLOTS IN THE WATER AND IS
 HV6793'BELIEVED TO HAVE BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6617 ***********************************************************************
 HV6617  DESIGNATION -  BEND 1908
 HV6617  PID         -  HV6617
 HV6617  STATE/COUNTY-  MD/ST MARYS
 HV6617  COUNTRY     -  US
 HV6617  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6617
 HV6617                         *CURRENT SURVEY CONTROL
 HV6617  ______________________________________________________________________
 HV6617* NAD 83(1993) POSITION- 38 11 43.67713(N) 076 25 46.99866(W)   ADJUSTED
 HV6617* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6617  ______________________________________________________________________
 HV6617  GEOID HEIGHT    -        -34.744 (meters)                     GEOID18
 HV6617  LAPLACE CORR    -         -5.85  (seconds)                    DEFLEC18
 HV6617  HORZ ORDER      -  THIRD
 HV6617
 HV6617.The horizontal coordinates were established by classical geodetic methods
 HV6617.and adjusted by the National Geodetic Survey in November 1994.
 HV6617
 HV6617.The orthometric height was scaled from a topographic map.
 HV6617
 HV6617.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6617.GEOID18 height accuracy estimate available here.
 HV6617
 HV6617.Click photographs - Photos may exist for this station.
 HV6617
 HV6617.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6617
 HV6617. The following values were computed from the NAD 83(1993) position.
 HV6617
 HV6617;                    North         East     Units Scale Factor Converg.
 HV6617;SPC MD       -    58,855.371   449,956.358   MT  1.00001983   +0 21 28.5
 HV6617;SPC MD       -   193,094.66  1,476,231.82   sFT  1.00001983   +0 21 28.5
 HV6617;UTM  18      - 4,228,468.706   374,805.063   MT  0.99979303   -0 53 03.0
 HV6617
 HV6617!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6617!SPC MD       -   1.00000518  x   1.00001983  =   1.00002501
 HV6617!UTM  18      -   1.00000518  x   0.99979303  =   0.99979821
 HV6617
 HV6617:                Primary Azimuth Mark                     Grid Az
 HV6617:SPC MD       -  CALVERT MONUMENT 1908                    211 00 32.1
 HV6617:UTM  18      -  CALVERT MONUMENT 1908                    212 15 03.6
 HV6617
 HV6617_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7480528468(NAD 83)
 HV6617
 HV6617|---------------------------------------------------------------------|
 HV6617| PID    Reference Object                     Distance      Geod. Az  |
 HV6617|                                                           dddmmss.s |
 HV6617| HV6610 ST MARYS EPISCOPAL CH CROSS         APPROX. 1.0 KM 2074405.8 |
 HV6617| HV6609 CALVERT MONUMENT 1908               APPROX. 1.0 KM 2112200.6 |
 HV6617|---------------------------------------------------------------------|
 HV6617
 HV6617                          SUPERSEDED SURVEY CONTROL
 HV6617
 HV6617  NAD 83(1991)-  38 11 43.67633(N)    076 25 47.00176(W) AD(       ) 3
 HV6617  NAD 83(1986)-  38 11 43.67677(N)    076 25 47.01532(W) AD(       ) 3
 HV6617  NAD 27      -  38 11 43.30300(N)    076 25 48.22900(W) AD(       ) 3
 HV6617  USSD        -  38 11 43.68600(N)    076 25 47.93400(W) AD(       ) 3
 HV6617
 HV6617.Superseded values are not recommended for survey control.
 HV6617
 HV6617.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6617.See file dsdata.pdf to determine how the superseded data were derived.
 HV6617
 HV6617_MARKER: H = DRILL HOLE
 HV6617_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6617_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6617+STABILITY: SURFACE MOTION
 HV6617
 HV6617  HISTORY     - Date     Condition        Report By
 HV6617  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6617  HISTORY     - 1942     GOOD             CGS
 HV6617  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6617  HISTORY     - 1974     MARK NOT FOUND   NGS
 HV6617
 HV6617                          STATION DESCRIPTION
 HV6617
 HV6617'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6617'STATION IS ON EASTERN SHORE OF HORSESHOE BEND, IN THE UPPER ST.
 HV6617'MARYS RIVER, ABOUT 5/8 MILE NNE OF CALVERT MONUMENT AND 1 MILE
 HV6617'E OF HORSESHOE POINT.  STATION IS IN CLEAR SPACE ABOUT 15 FEET
 HV6617'ABOVE HIGH WATER, 16 YARDS E OF SHORE, 6 YARDS E OF EDGE OF BANK,
 HV6617'7 YARDS E OF A ROAD, 12 YARDS S OF TREES, 12 YARDS W OF BUSHES,
 HV6617'16 YARDS N OF TREES, AND 23 YARDS NW OF TREES.
 HV6617'
 HV6617'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6617'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6617'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6617'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6617'POST.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV6617'ARE AS FOLLOWS--WINDMILL AT ST. MARYS SEMINARY, 5/8 MILE, S 23 DEG
 HV6617'10 MIN W.  NEAR PEAK OF ROOF OF COMMENCEMENT HALL AT ST. MARYS,
 HV6617'5/8 MILE, S 26 DEG 19 MIN W.  NEAR CORNER OF NEAR CHIMNEY OF MC KAYS
 HV6617'HOUSE, 1-5/8 MILES, S 50 DEG 38 MIN W.  CHIMNEY ON MIDDLE OF
 HV6617'HOUSE ON PAGAN POINT, 7/8 MILE, S 62 DEG 12 MIN W.  END OF FRONT
 HV6617'PEAK OF BRISCOS HOUSE, 1-1/2 MILES, S 86 DEG 44 MIN W.  NEAR
 HV6617'CHIMNEY OF LARGE HOUSE, 1-3/8 MILES, N 78 DEG 35 MIN W.  NAIL IN
 HV6617'BLAZE IN 3-INCH PINE TREE, 10.53 METERS (34.5 FEET), N 17 DEG 17 MIN
 HV6617'W.  NAIL IN BLAZE IN 9-INCH GUM TREE, 18.70 METERS
 HV6617'(61.4 FEET), N 30 DEG 01 MIN E.  NAIL IN BLAZE IN 3-INCH DOUBLE
 HV6617'CEDAR TREE, 22.24 METERS (73.0 FEET), N 80 DEG 16 MIN E.
 HV6617
 HV6617                          STATION RECOVERY (1942)
 HV6617
 HV6617'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6617'THE FOLLOWING DESCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HV6617'DELETE THE CLEAR SPACE, SINCE IT NO LONGER EXISTS, BEING ALL
 HV6617'WOODS.
 HV6617'
 HV6617'DELETE 6 YARDS E OF BANK SINCE IT IS ONLY 6 FEET E OF BANK.
 HV6617'
 HV6617'DELETE 7 YARDS E OF ROAD, SINCE THE ROAD NO LONGER EXISTS.
 HV6617'
 HV6617'DELETE 12 YARDS S OF TREES, 16 YARDS N OF TREES, 23 YARDS NW OF
 HV6617'TREES AND 12 YARDS W OF BUSHES SINCE IT IS ALL WOODS.
 HV6617'
 HV6617'THE STATION IS FLUSH WITH THE GROUND, NOT 4 INCHES ABOVE THE
 HV6617'GROUND.
 HV6617'
 HV6617'DELETE NAIL IN BLAZE IN 3-INCH PINE TREE, 9-INCH GUM TREE, AND
 HV6617'3-INCH DOUBLE CEDAR SINCE THEY NO LONGER EXIST.
 HV6617'
 HV6617'THE STATION IS LOCATED ABOUT 3/4 MILE N OF ST. MARYS CITY, ABOUT 925
 HV6617'FEET W OF PAVED HIGHWAY 5 ABOUT 600 FEET SE OF A TWO STORY FRAME
 HV6617'WHITE HOUSE, ABOUT 440 FEET NW OF A TWO-STORY FRAME HOUSE, ABOUT 6
 HV6617'FEET FROM TOP OF BANK, AND ABOUT 15 FEET ABOVE HIGH WATER IN THE
 HV6617'EDGE OF A PINE WOODS.
 HV6617'
 HV6617'THE STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6617'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH
 HV6617'SQUARE CONCRETE MONUMENT, 2 FEET LONG, WHICH IS FLUSH WITH THE
 HV6617'SURFACE OF THE GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6617'COUNTERSUNK IN THE TOP OF THE MONUMENT.  THE STATION IS IN GOOD
 HV6617'CONDITION.
 HV6617
 HV6617                          STATION RECOVERY (1958)
 HV6617
 HV6617'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6617'THE STATION IS LOST.  DUE TO THE LOSS OF ALL THE LOCAL REFERENCES
 HV6617'THIS STATION COULD NOT BE RECOVERED.  THE STATION IS PROBABLY STILL
 HV6617'INTACT SINCE THERE APPEARS TO HAVE BEEN NO EROSION OF THE SHORELINE
 HV6617'AT THE APPROXIMATE STATION SITE.
 HV6617
 HV6617                          STATION RECOVERY (1974)
 HV6617
 HV6617'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV6617'A SEARCH WAS MADE FOR THE STATION AND NO MARKS WERE FOUND.  IT IS
 HV6617'BELIEVED ALL MARKS WERE WASHED AWAY BY HIGH WATER.
 HV6617'
 HV6617'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3-1/2 MILES
 HV6617'NORTHWEST OF SOLOMONS ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4584 ***********************************************************************
 JV4584  DESIGNATION -  BENDIGO
 JV4584  PID         -  JV4584
 JV4584  STATE/COUNTY-  MD/MONTGOMERY
 JV4584  COUNTRY     -  US
 JV4584  USGS QUAD   -  URBANA (2016)
 JV4584
 JV4584                         *CURRENT SURVEY CONTROL
 JV4584  ______________________________________________________________________
 JV4584* NAD 83(1993) POSITION- 39 15 07.76517(N) 077 16 34.55349(W)   ADJUSTED
 JV4584* NAVD 88 ORTHO HEIGHT -   211.4   (meters)      694.    (feet) VERTCON3
 JV4584  ______________________________________________________________________
 JV4584  GEOID HEIGHT    -        -31.940 (meters)                     GEOID18
 JV4584  LAPLACE CORR    -          4.29  (seconds)                    DEFLEC18
 JV4584  HORZ ORDER      -  FIRST
 JV4584
 JV4584.The horizontal coordinates were established by classical geodetic methods
 JV4584.and adjusted by the National Geodetic Survey in November 1994.
 JV4584
 JV4584.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4584.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4584
 JV4584.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4584.GEOID18 height accuracy estimate available here.
 JV4584
 JV4584.Click photographs - Photos may exist for this station.
 JV4584
 JV4584.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4584
 JV4584. The following values were computed from the NAD 83(1993) position.
 JV4584
 JV4584;                    North         East     Units Scale Factor Converg.
 JV4584;SPC MD       -   176,035.112   376,154.064   MT  0.99997137   -0 10 24.2
 JV4584;SPC MD       -   577,541.86  1,234,098.79   sFT  0.99997137   -0 10 24.2
 JV4584;UTM  18      - 4,347,228.727   303,585.342   MT  1.00007503   -1 26 26.6
 JV4584
 JV4584!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4584!SPC MD       -   0.99997184  x   0.99997137  =   0.99994322
 JV4584!UTM  18      -   0.99997184  x   1.00007503  =   1.00004687
 JV4584
 JV4584:                Primary Azimuth Mark                     Grid Az
 JV4584:SPC MD       -  COMUS RESET                              259 57 04.5
 JV4584:UTM  18      -  COMUS RESET                              261 13 06.9
 JV4584
 JV4584_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0358547228(NAD 83)
 JV4584
 JV4584|---------------------------------------------------------------------|
 JV4584| PID    Reference Object                     Distance      Geod. Az  |
 JV4584|                                                           dddmmss.s |
 JV4584| CK6626 BENDIGO RM 1                         33.040 METERS 01934     |
 JV4584| JV4457 CLARKSBURG METH CH SPIRE            APPROX. 1.3 KM 1925918.6 |
 JV4584| JV4462 COMUS RESET                         APPROX. 7.0 KM 2594640.3 |
 JV4584| CK6627 BENDIGO RM 2                         30.395 METERS 29230     |
 JV4584|---------------------------------------------------------------------|
 JV4584
 JV4584                          SUPERSEDED SURVEY CONTROL
 JV4584
 JV4584  NAD 83(1991)-  39 15 07.76463(N)    077 16 34.55335(W) AD(       ) 1
 JV4584  NAD 83(1986)-  39 15 07.76477(N)    077 16 34.56394(W) AD(       ) 1
 JV4584  NAD 27      -  39 15 07.38491(N)    077 16 35.61586(W) AD(       ) 1
 JV4584  NGVD 29 (07/19/86)  211.6    (m)          694.     (f) VERT ANG       
 JV4584
 JV4584.Superseded values are not recommended for survey control.
 JV4584
 JV4584.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4584.See file dsdata.pdf to determine how the superseded data were derived.
 JV4584
 JV4584_MARKER: DS = TRIANGULATION STATION DISK
 JV4584_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4584_STAMPING: BENDIGO 1969
 JV4584_MARK LOGO: CGS
 JV4584_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4584+STABILITY: SURFACE MOTION
 JV4584
 JV4584  HISTORY     - Date     Condition        Report By
 JV4584  HISTORY     - 1969     MONUMENTED       CGS
 JV4584
 JV4584                          STATION DESCRIPTION
 JV4584
 JV4584'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4584'THE STATION IS ABOUT 1 MILE NORTH OF CLARKSBURG, NEAR THE SUMMIT OF
 JV4584'THE MOST NORTHERLY ONE OF TWO HIGH HILLS WHICH ARE ABOUT 0.2 MILE
 JV4584'APART AND ON PROPERTY OF B.B. BENDIGO.
 JV4584'
 JV4584'TO REACH THE STATION FROM WHERE STATE HIGHWAY 121 CROSSES
 JV4584'INTERSTATE HIGHWAY 708, GO NORTH ON HIGHWAY 121 FOR 0.65 MILE TO A
 JV4584'CROSSROAD.  CONTINUE NORTHERLY ON HIGHWAY 121 FOR 0.65 MILE TO A
 JV4584'ROAD FORK AND WHERE HIGHWAY 121 TURNS RIGHT.  TAKE THE LEFT FORK AND
 JV4584'GO NORTHERLY ON LEWISDALE ROAD FOR 0.2 MILE TO A DRIVEWAY LEFT,
 JV4584'ABOUT 100 FEET BEFORE REACHING SUMMIT OF HILL AND THE STATION ON
 JV4584'THE LEFT.
 JV4584'
 JV4584'THE STATION MARK IS A STANDARD DISK, STAMPED BENDIGO 1969, SET IN
 JV4584'THE TOP OF A ROUND CONCRETE POST, 14 INCHES IN DIAMETER, THAT IS
 JV4584'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 118.5 FEET SOUTH OF
 JV4584'THE SOUTHWEST CORNER OF A BRICK HOUSE, 111.0 FEET NORTH-NORTHWEST
 JV4584'OF THE CENTERLINE OF LEWISDALE ROAD, 100.0 FEET WEST OF THE
 JV4584'HIGHEST POINT OF THE HILL AND 47.0 FEET SOUTH OF THE CENTER OF
 JV4584'THE DRIVEWAY.  THE UNDERGROUND MARK IS 32 INCHES BELOW
 JV4584'THE GROUND SURFACE.
 JV4584'
 JV4584'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED BENDIGO NO 1 1969,
 JV4584'CEMENTED IN A DRILL HOLE IN A 2 X 4 FOOT ROCK OUTCROP THAT PROJECTS
 JV4584'5 INCHES ABOVE THE GROUND.  IT IS 92.0 FEET NORTHWEST OF THE
 JV4584'CENTERLINE OF LEWISDALE ROAD, 29.0 FEET SOUTHEAST OF THE SOUTHEAST
 JV4584'CORNER OF THE BRICK HOUSE AND ABOUT 7 FEET HIGHER IN ELEVATION
 JV4584'THAN THE STATION.
 JV4584'
 JV4584'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED BENDIGO NO 2 1969,
 JV4584'CEMENTED IN A DRILL HOLE IN A 2 X 7 FOOT ROCK OUTCROP THAT PROJECTS
 JV4584'1 FOOT ABOVE THE GROUND.  IT IS 71.5 FEET SOUTHWEST OF THE
 JV4584'SOUTHWEST CORNER OF THE BRICK HOUSE, 16.2 FEET NORTH OF THE
 JV4584'NORTHEAST CORNER OF A GARAGE, 14.0 FEET WEST OF A DRIVEWAY AND
 JV4584'ABOUT 4 FEET LOWER IN ELEVATION THAN THE STATION.
 JV4584'
 JV4584'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
 JV4584'
 JV4584'THE DISTANCE BETWEEN THE REFERENCE MARKS WAS NOT MEASURED DUE TO
 JV4584'OBSTRUCTIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5434 ***********************************************************************
 JV5434  DESIGNATION -  BENDIX EAST
 JV5434  PID         -  JV5434
 JV5434  STATE/COUNTY-  MD/BALTIMORE
 JV5434  COUNTRY     -  US
 JV5434  USGS QUAD   -  TOWSON (2016)
 JV5434
 JV5434                         *CURRENT SURVEY CONTROL
 JV5434  ______________________________________________________________________
 JV5434* NAD 83(1991) POSITION- 39 23 46.91794(N) 076 34 33.51093(W)   ADJUSTED
 JV5434* NAVD 88 ORTHO HEIGHT -   140.    (meters)      459.    (feet) SCALED
 JV5434  ______________________________________________________________________
 JV5434  GEOID HEIGHT    -        -32.645 (meters)                     GEOID18
 JV5434  LAPLACE CORR    -         -4.62  (seconds)                    DEFLEC18
 JV5434  HORZ ORDER      -  THIRD
 JV5434
 JV5434.The horizontal coordinates were established by classical geodetic methods
 JV5434.and adjusted by the National Geodetic Survey in January 1992.
 JV5434
 JV5434.The orthometric height was scaled from a topographic map.
 JV5434
 JV5434.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5434.GEOID18 height accuracy estimate available here.
 JV5434
 JV5434.Click photographs - Photos may exist for this station.
 JV5434
 JV5434.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5434
 JV5434. The following values were computed from the NAD 83(1991) position.
 JV5434
 JV5434;                    North         East     Units Scale Factor Converg.
 JV5434;SPC MD       -   192,093.885   436,525.463   MT  0.99999106   +0 15 58.1
 JV5434;SPC MD       -   630,228.02  1,432,167.29   sFT  0.99999106   +0 15 58.1
 JV5434;UTM  18      - 4,361,947.958   364,294.832   MT  0.99982674   -1 00 01.4
 JV5434
 JV5434!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5434!SPC MD       -   0.99998319  x   0.99999106  =   0.99997425
 JV5434!UTM  18      -   0.99998319  x   0.99982674  =   0.99980994
 JV5434
 JV5434:                Primary Azimuth Mark                     Grid Az
 JV5434:SPC MD       -  BALTIMORE TRUST OSULIVAN S ANT           195 09 27.5
 JV5434:UTM  18      -  BALTIMORE TRUST OSULIVAN S ANT           196 25 27.0
 JV5434
 JV5434_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6429461947(NAD 83)
 JV5434
 JV5434|---------------------------------------------------------------------|
 JV5434| PID    Reference Object                     Distance      Geod. Az  |
 JV5434|                                                           dddmmss.s |
 JV5434| JV5498 BALTIMORE TRUST OSULIVAN S ANT      APPROX.12.3 KM 1952525.6 |
 JV5434| JV5433 BENDIX WEST                          97.460 METERS 28411     |
 JV5434|---------------------------------------------------------------------|
 JV5434
 JV5434                          SUPERSEDED SURVEY CONTROL
 JV5434
 JV5434  NAD 83(1986)-  39 23 46.91389(N)    076 34 33.51828(W) AD(       ) 3
 JV5434  NAD 27      -  39 23 46.52500(N)    076 34 34.63100(W) AD(       ) 3
 JV5434
 JV5434.Superseded values are not recommended for survey control.
 JV5434
 JV5434.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5434.See file dsdata.pdf to determine how the superseded data were derived.
 JV5434
 JV5434_MARKER: DD = SURVEY DISK
 JV5434_SETTING: 0 = UNSPECIFIED SETTING
 JV5434_STAMPING: BENDIX EAST 1945
 JV5434
 JV5434  HISTORY     - Date     Condition        Report By
 JV5434  HISTORY     - 1945     MONUMENTED       CGS
 JV5434  HISTORY     - 1951     GOOD             CGS
 JV5434  HISTORY     - 1955     SEE DESCRIPTION  MDBCSM
 JV5434  HISTORY     - 19940930 GOOD             USPSQD
 JV5434  HISTORY     - 20020322 MARK NOT FOUND   USPSQD
 JV5434
 JV5434                          STATION DESCRIPTION
 JV5434
 JV5434'DESCRIBED BY COAST AND GEODETIC SURVEY 1951 (FRG)
 JV5434'A DESCRIPTION OF THIS STATION WAS NOT FURNISHED THIS OFFICE WHEN
 JV5434'THE STATION WAS ESTABLISHED.  A DESCRIPTION WAS OBTAINED WHEN
 JV5434'THE STATION WAS RECOVERED IN 1951.
 JV5434'
 JV5434'STATION IS LOCATED ABOUT 8 MILES N OF BALTIMORE AND 1 MILE E
 JV5434'OF TOWSON.  IT IS ON THE ROOF OF THE BENDIX RADIO CORPORATION
 JV5434'BUILDING ON JOPPA ROAD.  THE MARK IS SET ON THE ELEVATED
 JV5434'PORTION OF THE ROOF NEAR THE FRONT OF THE BUILDING.  IT IS 13
 JV5434'YARDS W OF THE E EDGE OF THE BUILDING AND 8 YARDS N OF THE S
 JV5434'EDGE OR FRONT OF THE BUILDING.  A NON STANDARD DISK IS WELDED
 JV5434'TO THE TOP OF A 12-INCH ROOF DRAIN WHICH PROJECTS 3 INCHES
 JV5434'ABOVE THE SURFACE OF THE ROOF.  IT IS STAMPED BENDIX EAST
 JV5434'1945.
 JV5434
 JV5434                          STATION RECOVERY (1955)
 JV5434
 JV5434'RECOVERY NOTE BY MD BUR SURV AND MAPS 1955 (TSC)
 JV5434'STATION HAS BEEN MOVED 80 FT. W ON A DIRECT LINE TOWARD STATION
 JV5434'BENDIX WEST.  THE INFORMATION WAS SUPPLIED BY THE BENDIX RADIO
 JV5434'CORP.
 JV5434
 JV5434                          STATION RECOVERY (1994)
 JV5434
 JV5434'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5434'RECOVERED IN GOOD CONDITION.
 JV5434
 JV5434                          STATION RECOVERY (2002)
 JV5434
 JV5434'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 JV5434'EXTERIOR BUILDING RENOVATED - NOW A SHOPPING CENTER WALL RADIO SHACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5433 ***********************************************************************
 JV5433  DESIGNATION -  BENDIX WEST
 JV5433  PID         -  JV5433
 JV5433  STATE/COUNTY-  MD/BALTIMORE
 JV5433  COUNTRY     -  US
 JV5433  USGS QUAD   -  TOWSON (2016)
 JV5433
 JV5433                         *CURRENT SURVEY CONTROL
 JV5433  ______________________________________________________________________
 JV5433* NAD 83(1991) POSITION- 39 23 47.69200(N) 076 34 37.45992(W)   ADJUSTED
 JV5433* NAVD 88 ORTHO HEIGHT -   140.    (meters)      459.    (feet) SCALED
 JV5433  ______________________________________________________________________
 JV5433  GEOID HEIGHT    -        -32.642 (meters)                     GEOID18
 JV5433  LAPLACE CORR    -         -4.64  (seconds)                    DEFLEC18
 JV5433  HORZ ORDER      -  THIRD
 JV5433
 JV5433.The horizontal coordinates were established by classical geodetic methods
 JV5433.and adjusted by the National Geodetic Survey in January 1992.
 JV5433
 JV5433.The orthometric height was scaled from a topographic map.
 JV5433
 JV5433.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5433.GEOID18 height accuracy estimate available here.
 JV5433
 JV5433.Click photographs - Photos may exist for this station.
 JV5433
 JV5433.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5433
 JV5433. The following values were computed from the NAD 83(1991) position.
 JV5433
 JV5433;                    North         East     Units Scale Factor Converg.
 JV5433;SPC MD       -   192,117.318   436,430.862   MT  0.99999109   +0 15 55.6
 JV5433;SPC MD       -   630,304.90  1,431,856.92   sFT  0.99999109   +0 15 55.6
 JV5433;UTM  18      - 4,361,973.472   364,200.788   MT  0.99982706   -1 00 03.9
 JV5433
 JV5433!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5433!SPC MD       -   0.99998319  x   0.99999109  =   0.99997428
 JV5433!UTM  18      -   0.99998319  x   0.99982706  =   0.99981026
 JV5433
 JV5433_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6420061973(NAD 83)
 JV5433
 JV5433                          SUPERSEDED SURVEY CONTROL
 JV5433
 JV5433  NAD 83(1986)-  39 23 47.68795(N)    076 34 37.46726(W) AD(       ) 3
 JV5433  NAD 27      -  39 23 47.29900(N)    076 34 38.58000(W) AD(       ) 3
 JV5433
 JV5433.Superseded values are not recommended for survey control.
 JV5433
 JV5433.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5433.See file dsdata.pdf to determine how the superseded data were derived.
 JV5433
 JV5433_MARKER: DD = SURVEY DISK
 JV5433_SETTING: 0 = UNSPECIFIED SETTING
 JV5433_SP_SET: ROOF DRAIN
 JV5433_STAMPING: BENDIX WEST 1945
 JV5433
 JV5433  HISTORY     - Date     Condition        Report By
 JV5433  HISTORY     - 1945     MONUMENTED       CGS
 JV5433  HISTORY     - 1951     GOOD             CGS
 JV5433  HISTORY     - 19940930 GOOD             USPSQD
 JV5433  HISTORY     - 20020323 MARK NOT FOUND   USPSQD
 JV5433
 JV5433                          STATION DESCRIPTION
 JV5433
 JV5433'DESCRIBED BY COAST AND GEODETIC SURVEY 1951 (FRG)
 JV5433'A DESCRIPTION OF THIS STATION WAS NOT FURNISHED THIS OFFICE WHEN
 JV5433'THE STATION WAS ESTABLISHED.  A DESCRIPTION WAS OBTAINED WHEN THE
 JV5433'STATION WAS RECOVERED IN 1951.
 JV5433'
 JV5433'STATION IS LOCATED ABOUT 8 MILES N OF BALTIMORE AND 1 MILE E
 JV5433'OF TOWSON.  IT IS ON THE ROOF OF THE BENDIX RADIO CORPORATION
 JV5433'BUILDING ON JOPPA ROAD.  THE MARK IS SET ON THE ELEVATED
 JV5433'PORTION OF THE ROOF NEAR THE FRONT OF THE BUILDING.  IT IS 54
 JV5433'YARDS E OF THE W EDGE OF THE BUILDING AND 8 YARDS N OF THE S
 JV5433'EDGE OR FRONT OF THE BUILDING.  A NON STANDARD DISK IS WELDED
 JV5433'TO THE TOP OF A 12-INCH ROOF DRAIN WHICH PROJECTS 3 INCHES
 JV5433'ABOVE THE SURFACE OF THE ROOF.  IT IS STAMPED BENDIX WEST
 JV5433'1945.
 JV5433
 JV5433                          STATION RECOVERY (1994)
 JV5433
 JV5433'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5433'RECOVERED IN GOOD CONDITION.
 JV5433
 JV5433                          STATION RECOVERY (2002)
 JV5433
 JV5433'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 JV5433'EXTERIOR BUILDING RENOVATED - NOW A SHOPPING CENTER WALL RADIO SHACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5732 ***********************************************************************
 HV5732  DESIGNATION -  BENGAL
 HV5732  PID         -  HV5732
 HV5732  STATE/COUNTY-  MD/TALBOT
 HV5732  COUNTRY     -  US
 HV5732  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5732
 HV5732                         *CURRENT SURVEY CONTROL
 HV5732  ______________________________________________________________________
 HV5732* NAD 83(1991) POSITION- 38 45 48.25402(N) 076 14 54.16096(W)   ADJUSTED
 HV5732* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5732  ______________________________________________________________________
 HV5732  GEOID HEIGHT    -        -34.315 (meters)                     GEOID18
 HV5732  LAPLACE CORR    -         -4.99  (seconds)                    DEFLEC18
 HV5732  HORZ ORDER      -  THIRD
 HV5732
 HV5732.The horizontal coordinates were established by classical geodetic methods
 HV5732.and adjusted by the National Geodetic Survey in January 1992.
 HV5732
 HV5732.The orthometric height was scaled from a topographic map.
 HV5732
 HV5732.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5732.GEOID18 height accuracy estimate available here.
 HV5732
 HV5732.Click photographs - Photos may exist for this station.
 HV5732
 HV5732.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5732
 HV5732. The following values were computed from the NAD 83(1991) position.
 HV5732
 HV5732;                    North         East     Units Scale Factor Converg.
 HV5732;SPC MD       -   122,011.128   465,322.700   MT  0.99995176   +0 28 18.3
 HV5732;SPC MD       -   400,298.18  1,526,646.22   sFT  0.99995176   +0 28 18.3
 HV5732;UTM  18      - 4,291,261.653   391,539.800   MT  0.99974486   -0 46 54.1
 HV5732
 HV5732!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5732!SPC MD       -   1.00000542  x   0.99995176  =   0.99995718
 HV5732!UTM  18      -   1.00000542  x   0.99974486  =   0.99975028
 HV5732
 HV5732:                Primary Azimuth Mark                     Grid Az
 HV5732:SPC MD       -  EASTMAN                                  289 59 40.2
 HV5732:UTM  18      -  EASTMAN                                  291 14 52.6
 HV5732
 HV5732_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9153991261(NAD 83)
 HV5732
 HV5732|---------------------------------------------------------------------|
 HV5732| PID    Reference Object                     Distance      Geod. Az  |
 HV5732|                                                           dddmmss.s |
 HV5732| CX2085 BENGAL RM                                          23234     |
 HV5732| HV6261 EASTMAN                             APPROX. 0.6 KM 2902758.5 |
 HV5732| HV6225 MARS                                APPROX. 0.5 KM 3471646.3 |
 HV5732|---------------------------------------------------------------------|
 HV5732
 HV5732                          SUPERSEDED SURVEY CONTROL
 HV5732
 HV5732  NAD 83(1986)-  38 45 48.25020(N)    076 14 54.17558(W) AD(       ) 3
 HV5732  NAD 27      -  38 45 47.83400(N)    076 14 55.37200(W) AD(       ) 3
 HV5732  USSD        -  38 45 48.20800(N)    076 14 55.18800(W) AD(       ) 3
 HV5732
 HV5732.Superseded values are not recommended for survey control.
 HV5732
 HV5732.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5732.See file dsdata.pdf to determine how the superseded data were derived.
 HV5732
 HV5732_MARKER: K = CLAY TILE PIPE
 HV5732_SETTING: 0 = UNSPECIFIED SETTING
 HV5732
 HV5732  HISTORY     - Date     Condition        Report By
 HV5732  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5732  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5732
 HV5732                          STATION DESCRIPTION
 HV5732
 HV5732'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5732'ON THE WESTERN SHORE OF THE UPPER PART OF BROAD CREEK, ABOUT 3/4
 HV5732'MILE W OF THE N END OF HAMBLETON ISLAND, ON A NARROW MARSH POINT,
 HV5732'ABOUT 1 FOOT ABOVE HIGH WATER, 4 YARDS S OF SHORE, 55 YARDS W OF
 HV5732'EXTREME END OF POINT AND N OF A FRINGE OF PINE AND CEDAR TREES
 HV5732'ALONG BANK.  STATION MARK IS CENTER OF 2-INCH TILE PIPE PROJECTING
 HV5732'3 INCHES ABOVE SURFACE OF GROUND.  SUB-SURFACE MARK IS THE CENTER
 HV5732'OF 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE
 HV5732'SURFACE MARK.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF
 HV5732'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV5732'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV5732'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5732'TOP OF POST.  IT IS 8.81 METERS (28.90 FEET) FROM STATION S 52
 HV5732'DEG 34 MIN W. OTHER DISTANCES AND BEARINGS ARE AS FOLLOWS--NAIL IN
 HV5732'BLAZE IN 18-INCH PINE TREE, 11.68 METERS (38.3 FEET), S 44 DEG 42
 HV5732'MIN W.  NAIL IN BLAZE IN 10-INCH CEDAR STUMP 1 FOOT HIGH, 9.43
 HV5732'METERS (30.94 FEET), S 57 DEG 9 MIN W. E CHIMNEY OF JUMPS HOUSE,
 HV5732'1/2 MILE, N 62 DEG 52 MIN W. BELFRY ON HARRISONS OUTHOUSE, 1-1/2
 HV5732'MILES, N 29 DEG 57 MIN W. S CHIMNEY OF HARPERS HOUSE, 3/4 MILE, N
 HV5732'14 DEG 58 MIN W. CUPOLA ON BARN, 1/2 MILE, N 20 DEG 2 MIN E.  S
 HV5732'CHIMNEY OF HOUSE, 3/4 MILE, N 34 DEG 26 MIN E.  N CHIMNEY OF
 HV5732'HOUSE, 5/8 MILE, N 61 DEG 23 MIN E.  N CHIMNEY OF HOUSE, 1-1/2
 HV5732'MILES, S 68 DEG 37 MIN E.
 HV5732
 HV5732                          STATION RECOVERY (1940)
 HV5732
 HV5732'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5732'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  HAS EVIDENTLY BEEN
 HV5732'WASHED OUT.  SMALL PIECES OF THE CONCRETE MONUMENT WERE FOUND ON
 HV5732'THE SHORE.  REFERENCE TREE DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5721 ***********************************************************************
 HV5721  DESIGNATION -  BENN
 HV5721  PID         -  HV5721
 HV5721  STATE/COUNTY-  MD/QUEEN ANNES
 HV5721  COUNTRY     -  US
 HV5721  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5721
 HV5721                         *CURRENT SURVEY CONTROL
 HV5721  ______________________________________________________________________
 HV5721* NAD 83(1991) POSITION- 38 51 10.11336(N) 076 12 20.34750(W)   ADJUSTED
 HV5721* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5721  ______________________________________________________________________
 HV5721  GEOID HEIGHT    -        -34.211 (meters)                     GEOID18
 HV5721  LAPLACE CORR    -         -4.68  (seconds)                    DEFLEC18
 HV5721  HORZ ORDER      -  THIRD
 HV5721
 HV5721.The horizontal coordinates were established by classical geodetic methods
 HV5721.and adjusted by the National Geodetic Survey in January 1992.
 HV5721
 HV5721.The orthometric height was scaled from a topographic map.
 HV5721
 HV5721.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5721.GEOID18 height accuracy estimate available here.
 HV5721
 HV5721.Click photographs - Photos may exist for this station.
 HV5721
 HV5721.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5721
 HV5721. The following values were computed from the NAD 83(1991) position.
 HV5721
 HV5721;                    North         East     Units Scale Factor Converg.
 HV5721;SPC MD       -   131,966.758   468,949.521   MT  0.99994993   +0 29 54.8
 HV5721;SPC MD       -   432,960.94  1,538,545.22   sFT  0.99994993   +0 29 54.8
 HV5721;UTM  18      - 4,301,133.431   395,382.853   MT  0.99973477   -0 45 23.0
 HV5721
 HV5721!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5721!SPC MD       -   1.00000525  x   0.99994993  =   0.99995518
 HV5721!UTM  18      -   1.00000525  x   0.99973477  =   0.99974002
 HV5721
 HV5721:                Primary Azimuth Mark                     Grid Az
 HV5721:SPC MD       -  WADES POINT RADIO TOWER                  244 32 49.0
 HV5721:UTM  18      -  WADES POINT RADIO TOWER                  245 48 06.8
 HV5721
 HV5721_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9538201133(NAD 83)
 HV5721
 HV5721|---------------------------------------------------------------------|
 HV5721| PID    Reference Object                     Distance      Geod. Az  |
 HV5721|                                                           dddmmss.s |
 HV5721| HV5671 ST MICHAELS WATER TANK              APPROX. 7.5 KM 1932538.7 |
 HV5721| HV6231 WADES POINT RADIO TOWER             APPROX. 8.1 KM 2450243.8 |
 HV5721|---------------------------------------------------------------------|
 HV5721
 HV5721                          SUPERSEDED SURVEY CONTROL
 HV5721
 HV5721  NAD 83(1986)-  38 51 10.10898(N)    076 12 20.36080(W) AD(       ) 3
 HV5721  NAD 27      -  38 51 09.67100(N)    076 12 21.55000(W) AD(       ) 3
 HV5721  USSD        -  38 51 10.06000(N)    076 12 21.32700(W) AD(       ) 3
 HV5721
 HV5721.Superseded values are not recommended for survey control.
 HV5721
 HV5721.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5721.See file dsdata.pdf to determine how the superseded data were derived.
 HV5721
 HV5721_MARKER: H = DRILL HOLE
 HV5721_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5721_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5721+STABILITY: SURFACE MOTION
 HV5721
 HV5721  HISTORY     - Date     Condition        Report By
 HV5721  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5721  HISTORY     - 1938     POOR             CGS
 HV5721  HISTORY     - 1961     POOR             CGS
 HV5721  HISTORY     - 1973     POOR             MDDNR
 HV5721  HISTORY     - 1982     MARK NOT FOUND   MDDNR
 HV5721
 HV5721                          STATION DESCRIPTION
 HV5721
 HV5721'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5721'STATION IS LOCATED ON THE EASTERN SHORE OF MILES RIVER, ON BENNETT
 HV5721'POINT, AT WESTERN SIDE OF ENTRANCE TO WYE RIVER, ON A MARSH POINT
 HV5721'ABOUT 1 FOOT ABOVE HIGH WATER, 75 YARDS NE OF EXTREME END OF
 HV5721'POINT, 100 YARDS SW FROM EDGE OF WOODS, AND IN CENTER OF TRIANGLE
 HV5721'FORMED BY THREE PINE STUBS DRIVEN FLUSH WITH MARSH TO SUPPORT
 HV5721'THEODOLITE.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HV5721'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV5721'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 1 FOOT
 HV5721'ABOVE SURFACE OF GROUND. THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5721'COUNTERSUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH
 HV5721'DRAINTILE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV5721'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5721'ARE AS FOLLOWS--S CHIMNEY OF HOUSE ON TILGHMANS POINT FARM, 3
 HV5721'MILES, N 86 DEG 20 MIN W.  CUPOLA OF BARN, 1 MILE, S 51 DEG 34 MIN E.
 HV5721
 HV5721                          STATION RECOVERY (1938)
 HV5721
 HV5721'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV5721'STATION MARK FOUND WITH TOP PORTION OF CONCRETE POST BROKEN OFF
 HV5721'FLUSH WITH SURFACE OF MARSH.  PORTION OF POST REMAINING IS ABOUT 8
 HV5721'INCHES SQUARE AND APPEARED SOLID IN MARSH.  HYDROGRAPHIC SIGNAL
 HV5721'ABOUT 2 OR 3 YEARS OLD WAS LYING OVER POST.
 HV5721'
 HV5721'STATION WAS PRICKED FOR AIR PHOTO CONTROL.
 HV5721'
 HV5721'STATION IS ON E SHORE OF EASTERN BAY ON BENNETT POINT ON NW SIDE
 HV5721'OF ENTRANCE TO WYE RIVER ON MARSH POINT, ABOUT 40 METERS N OF
 HV5721'EXTREME POINT OF MARSH, 25 METERS W OF HIGH-WATER LINE, AND 50
 HV5721'METERS NW OF HIGH-WATER LINE, 115 METERS SW OF POINT OF SMALL
 HV5721'TREES AND BRUSH.  STATION WAS VISITED BY BOAT.
 HV5721
 HV5721                          STATION RECOVERY (1961)
 HV5721
 HV5721'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5721'STATION SURFACE MARK RECOVERED WITH THE TOP BROKEN OFF LEVEL WITH
 HV5721'THE GROUND.  THE MARYLAND TIDEWATER COMMISSION HAS BUILT A TRIPOD
 HV5721'OVER THE STATION WHICH IS IN GOOD CONDITION.  THE PUBLISHED
 HV5721'DESCRIPTION IS ADEQUATE.
 HV5721
 HV5721                          STATION RECOVERY (1973)
 HV5721
 HV5721'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV5721'STATION MARK WAS RECOVERED IN FAIR CONDITION.  THE MONUMENT WITH
 HV5721'TOP CRACKED OFF IS NOW ONE FOOT BELOW SURFACE.  SAND IS BUILDING
 HV5721'UP IN AREA.  SIGNAL OVER STATION IS NOW GONE.  WITNESS POSTS
 HV5721'PLACED ON W,N AND E SIDES OF MARK.  THE POST W OF MONUMENT HAS
 HV5721'SIGN ON IT.
 HV5721
 HV5721                          STATION RECOVERY (1982)
 HV5721
 HV5721'RECOVERY NOTE BY MD DEPT OF NAT RES 1982 (LW)
 HV5721'MARK NOT FOUND - STAKE FROM E LEG OF SIGNAL FOUND ON E SIDE OF
 HV5721'ROAD BEHIND RUBBLE REVETMENT.  STA. MAY STILL EXIST BENEATH ROAD,
 HV5721'BUT IT IS LIKELY THAT IT HAS BEEN DESTROYED OR DISTURBED.
 HV5721'
 HV5721'DISTANCE AND DIRECTION FROM NEAREST TOWN--S. END BENNET PT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5720 ***********************************************************************
 HV5720  DESIGNATION -  BENNETT
 HV5720  PID         -  HV5720
 HV5720  STATE/COUNTY-  MD/QUEEN ANNES
 HV5720  COUNTRY     -  US
 HV5720  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5720
 HV5720                         *CURRENT SURVEY CONTROL
 HV5720  ______________________________________________________________________
 HV5720* NAD 83(1991) POSITION- 38 51 07.10048(N) 076 12 21.58114(W)   ADJUSTED
 HV5720* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5720  ______________________________________________________________________
 HV5720  GEOID HEIGHT    -        -34.213 (meters)                     GEOID18
 HV5720  LAPLACE CORR    -         -4.68  (seconds)                    DEFLEC18
 HV5720  HORZ ORDER      -  THIRD
 HV5720
 HV5720.The horizontal coordinates were established by classical geodetic methods
 HV5720.and adjusted by the National Geodetic Survey in January 1992.
 HV5720
 HV5720.The orthometric height was scaled from a topographic map.
 HV5720
 HV5720.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5720.GEOID18 height accuracy estimate available here.
 HV5720
 HV5720.Click photographs - Photos may exist for this station.
 HV5720
 HV5720.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5720
 HV5720. The following values were computed from the NAD 83(1991) position.
 HV5720
 HV5720;                    North         East     Units Scale Factor Converg.
 HV5720;SPC MD       -   131,873.599   468,920.586   MT  0.99994993   +0 29 54.0
 HV5720;SPC MD       -   432,655.30  1,538,450.29   sFT  0.99994993   +0 29 54.0
 HV5720;UTM  18      - 4,301,040.949   395,351.891   MT  0.99973485   -0 45 23.8
 HV5720
 HV5720!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5720!SPC MD       -   1.00000540  x   0.99994993  =   0.99995533
 HV5720!UTM  18      -   1.00000540  x   0.99973485  =   0.99974025
 HV5720
 HV5720:                Primary Azimuth Mark                     Grid Az
 HV5720:SPC MD       -  PARSONS                                  328 17 50.5
 HV5720:UTM  18      -  PARSONS                                  329 33 08.3
 HV5720
 HV5720_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9535101040(NAD 83)
 HV5720
 HV5720|---------------------------------------------------------------------|
 HV5720| PID    Reference Object                     Distance      Geod. Az  |
 HV5720|                                                           dddmmss.s |
 HV5720| HV5755 PARSONS                             APPROX. 7.2 KM 3284744.5 |
 HV5720|---------------------------------------------------------------------|
 HV5720
 HV5720                          SUPERSEDED SURVEY CONTROL
 HV5720
 HV5720  NAD 83(1986)-  38 51 07.09611(N)    076 12 21.59443(W) AD(       ) 3
 HV5720  NAD 27      -  38 51 06.65000(N)    076 12 22.79400(W) AD(       ) 3
 HV5720  USSD        -  38 51 07.03700(N)    076 12 22.57000(W) AD(       ) 3
 HV5720
 HV5720.Superseded values are not recommended for survey control.
 HV5720
 HV5720.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5720.See file dsdata.pdf to determine how the superseded data were derived.
 HV5720
 HV5720_MARKER: V = STONE MONUMENT
 HV5720_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5720
 HV5720  HISTORY     - Date     Condition        Report By
 HV5720  HISTORY     - 1899     MONUMENTED       CGS
 HV5720
 HV5720                          STATION DESCRIPTION
 HV5720
 HV5720'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (JWD)
 HV5720'STATION IS LOCATED THE NORTHERN SIDE OF THE ENTRANCE TO WYE
 HV5720'RIVER, ON BENNETT POINT, ON A LOW GRASSY POINT, ABOUT 30 FEET
 HV5720'INSIDE HIGH-WATER MARK.  STATION MARKED UNDERGROUND BY A BOTTLE
 HV5720'PLACED ABOUT 34 INCHES BELOW SURFACE OF GROUND.  ABOVE THE BOTTLE
 HV5720'IS A ROUGH GRANITE POST 35 INCHES LONG AND ABOUT 12 INCHES SQUARE,
 HV5720'THE BOTTON OF THE POST BEING 3 INCHES ABOVE TOP OF BOTTLE.  THE
 HV5720'TOP OF THE POST IS DRESSED TO A 6-INCH SQUARE AND IS MARKED WITH
 HV5720'SQUARE CROSS LINES AND THE LETTERS U.S.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3548 ***********************************************************************
 JU3548  HT_MOD      -  This is a Height Modernization Survey Station.
 JU3548  DESIGNATION -  BENNETT AZIMUTH MARK
 JU3548  PID         -  JU3548
 JU3548  STATE/COUNTY-  MD/KENT
 JU3548  COUNTRY     -  US
 JU3548  USGS QUAD   -  MILLINGTON (2016)
 JU3548
 JU3548                         *CURRENT SURVEY CONTROL
 JU3548  ______________________________________________________________________
 JU3548* NAD 83(2011) POSITION- 39 18 04.54422(N) 075 46 12.45718(W)   ADJUSTED
 JU3548* NAD 83(2011) ELLIP HT-   -12.790 (meters)        (12/20/17)   ADJUSTED
 JU3548* NAD 83(2011) EPOCH   -  2010.00
 JU3548* NAVD 88 ORTHO HEIGHT -    20.88  (meters)       68.5   (feet) GPS OBS
 JU3548  ______________________________________________________________________
 JU3548  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 JU3548  GEOID HEIGHT    -        -33.666 (meters)                     GEOID12B
 JU3548  GEOID HEIGHT    -        -33.667 (meters)                     GEOID18
 JU3548  NAD 83(2011) X  -  1,214,856.330 (meters)                     COMP
 JU3548  NAD 83(2011) Y  - -4,790,561.197 (meters)                     COMP
 JU3548  NAD 83(2011) Z  -  4,018,245.613 (meters)                     COMP
 JU3548  LAPLACE CORR    -         -1.74  (seconds)                    DEFLEC18
 JU3548
 JU3548  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU3548  Standards:
 JU3548         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU3548            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU3548  -------------------------------------------------------------------
 JU3548  NETWORK    0.50   0.74           0.22   0.19   0.38     -0.03688100
 JU3548  -------------------------------------------------------------------
 JU3548  Click here for local accuracies and other accuracy information.
 JU3548
 JU3548.The horizontal coordinates were established by GPS observations
 JU3548.and adjusted by the MASER CONSULTING in December 2017.
 JU3548
 JU3548.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU3548.been affixed to the stable North American tectonic plate. See 
 JU3548.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU3548
 JU3548.The horizontal coordinates are valid at the epoch date displayed above
 JU3548.which is a decimal equivalence of Year/Month/Day.
 JU3548
 JU3548.The orthometric height was determined by GPS observations and a
 JU3548.high-resolution geoid model using precise GPS observation and
 JU3548.processing techniques.
 JU3548
 JU3548.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3548.GEOID18 height accuracy estimate available here.
 JU3548
 JU3548.Click photographs - Photos may exist for this station.
 JU3548
 JU3548.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU3548
 JU3548.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3548
 JU3548.The ellipsoidal height was determined by GPS observations
 JU3548.and is referenced to NAD 83.
 JU3548
 JU3548. The following values were computed from the NAD 83(2011) position.
 JU3548
 JU3548;                    North         East     Units Scale Factor Converg.
 JU3548;SPC MD       -   182,165.186   506,080.598   MT  0.99997736   +0 46 18.9
 JU3548;SPC MD       -   597,653.61  1,660,366.10   sFT  0.99997736   +0 46 18.9
 JU3548;UTM  18      - 4,350,491.526   433,596.669   MT  0.99965429   -0 29 16.1
 JU3548
 JU3548!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3548!SPC MD       -   1.00000201  x   0.99997736  =   0.99997937
 JU3548!UTM  18      -   1.00000201  x   0.99965429  =   0.99965630
 JU3548
 JU3548:                Primary Azimuth Mark                     Grid Az
 JU3548:SPC MD       -  BENNETT                                  088 28 52.1
 JU3548:UTM  18      -  BENNETT                                  089 44 27.1
 JU3548
 JU3548_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3359650491(NAD 83)
 JU3548
 JU3548|---------------------------------------------------------------------|
 JU3548| PID    Reference Object                     Distance      Geod. Az  |
 JU3548|                                                           dddmmss.s |
 JU3548| JU3538 BENNETT                             APPROX. 0.8 KM 0891511.0 |
 JU3548|---------------------------------------------------------------------|
 JU3548
 JU3548                          SUPERSEDED SURVEY CONTROL
 JU3548
 JU3548  NAD 83(1991)-  39 18 04.53913(N)    075 46 12.45783(W) AD(       ) 2
 JU3548  NAD 83(1986)-  39 18 04.53063(N)    075 46 12.46693(W) AD(       ) 2
 JU3548  NAD 27      -  39 18 04.13240(N)    075 46 13.70860(W) AD(       ) 2
 JU3548  NGVD 29 (07/19/86)   21.8    (m)           72.     (f) VERT ANG       
 JU3548
 JU3548.Superseded values are not recommended for survey control.
 JU3548
 JU3548.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3548.See file dsdata.pdf to determine how the superseded data were derived.
 JU3548
 JU3548_MARKER: DZ = AZIMUTH MARK DISK
 JU3548_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3548_STAMPING: BENNETT 1961
 JU3548_MARK LOGO: CGS
 JU3548_PROJECTION: FLUSH
 JU3548_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU3548_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3548+STABILITY: SURFACE MOTION
 JU3548_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3548+SATELLITE: SATELLITE OBSERVATIONS - January 21, 2022
 JU3548
 JU3548  HISTORY     - Date     Condition        Report By
 JU3548  HISTORY     - 1961     MONUMENTED       CGS
 JU3548  HISTORY     - 19960928 GOOD             USPSQD
 JU3548  HISTORY     - 19981003 GOOD             USPSQD
 JU3548  HISTORY     - 20130711 GOOD             DELCOS
 JU3548  HISTORY     - 20220121 GOOD             MDSHA
 JU3548
 JU3548                          STATION DESCRIPTION
 JU3548
 JU3548'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3548'(THERE WERE NO REFERENCE MARKS TAKEN AT THIS STATION.)
 JU3548'
 JU3548'THE STATION IS LOCATED ABOUT 3-1/2 MILES EAST OF MASSEY MARYLAND,
 JU3548'2-1/2 MILES SOUTH OF GOLTS MARYLAND AND ON PROPERTY OWNED BY
 JU3548'MR. J.E. BENNETT WHO GAVE PERMISSION.
 JU3548'
 JU3548'TO REACH THE STATION FROM THE CROSSROADS IN MASSEY MARYLAND, GO
 JU3548'EASTERLY ON ASPHALT ROAD FOR 2.9 MILES TO THE STATION ON THE
 JU3548'RIGHT.
 JU3548'
 JU3548'AZIMUTH MARK, IS A STANDARD DISK SET IN THE TOP OF A 10 X 10 INCH
 JU3548'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND,
 JU3548'STAMPED BENNETT 1961.  IT IS 34.0 FEET SOUTH OF THE APPROXIMATE
 JU3548'CENTER OF A ASPHALT ROAD, 42.0 FEET EAST OF A 2 X 2 FEET BOULDER
 JU3548'WHICH PROJECTS ABOUT 5.0 FEET ABOVE THE GROUND, 4.0 FEET
 JU3548'SOUTHWEST OF A STANDARD METAL WITNESS POST AND MARKER AND 1.0 FOOT
 JU3548'SOUTH OF A FENCE LINE.
 JU3548'
 JU3548'HEIGHT OF LIGHT ABOVE STATION MARK 1 METERS.
 JU3548
 JU3548                          STATION RECOVERY (1996)
 JU3548
 JU3548'RECOVERY NOTE BY US POWER SQUADRON 1996
 JU3548'RECOVERED IN GOOD CONDITION.
 JU3548
 JU3548                          STATION RECOVERY (1998)
 JU3548
 JU3548'RECOVERY NOTE BY US POWER SQUADRON 1998
 JU3548'RECOVERED IN GOOD CONDITION.
 JU3548
 JU3548                          STATION RECOVERY (2013)
 JU3548
 JU3548'RECOVERY NOTE BY DELAWARE COASTAL PROGRAM 2013
 JU3548'RECOVERED IN GOOD CONDITION.
 JU3548
 JU3548                          STATION RECOVERY (2022)
 JU3548
 JU3548'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 JU3548'RECOVERED IN GOOD CONDITION.
 JU3548'
 JU3548'THE MARK IS LOCATED ABOUT 17.1 MI (27.5 KM) EAST-NORTHEAST OF
 JU3548'CHESTERTOWN, 6.4 MI (10.3 KM) EAST-SOUTHEAST OF GALENA, 4.7 MI (7.6
 JU3548'KM) NORTHEAST OF MILLINGTON AND 3.0 MI (4.8 KM) EAST OF MASSEY.
 JU3548'
 JU3548'TO REACH THE MARK FROM THE JUNCTION OF MD 313 AND MD 330 E, GO
 JU3548'EAST-SOUTHEAST ON MD 330 E FOR 3.17 MI (5.10 KM) TO THE MARK ON THE
 JU3548'RIGHT. THE MARK IS JUST EAST OF THE INTERSECTION OF MD 330 AND BIG
 JU3548'STONE ROAD.
 JU3548'
 JU3548'THE MARK IS 82.3 FT (25.1 M) SOUTHEAST OF A UTILITY POLE NUMBERED C
 JU3548'AND P 60, 76.7 FT (23.4 M) EAST OF THE CENTERLINE OF BIG STONE ROAD,
 JU3548'61.4 FT (18.7 M) NORTHEAST OF A UTILITY POLE NUMBERED C AND P 60A,
 JU3548'34.1 FT (10.4 M) SOUTH OF THE CENTERLINE OF MARYLAND LINE ROAD ROAD
 JU3548'SET IN THE TOP OF A 10-IN (25 CM) SQUARE CONCRETE POST AND ABOUT LEVEL
 JU3548'WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9393 ***********************************************************************
 DR9393  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9393  DESIGNATION -  BENNETT RESET
 DR9393  PID         -  DR9393
 DR9393  STATE/COUNTY-  MD/KENT
 DR9393  COUNTRY     -  US
 DR9393  USGS QUAD   -  MILLINGTON (2016)
 DR9393
 DR9393                         *CURRENT SURVEY CONTROL
 DR9393  ______________________________________________________________________
 DR9393* NAD 83(2011) POSITION- 39 18 06.37222(N) 075 45 56.01827(W)   ADJUSTED
 DR9393* NAD 83(2011) ELLIP HT-   -13.697 (meters)        (09/18/23)   ADJUSTED
 DR9393* NAD 83(2011) EPOCH   -  2010.00
 DR9393* NAVD 88 ORTHO HEIGHT -    19.96  (meters)       65.5   (feet) GPS OBS
 DR9393  ______________________________________________________________________
 DR9393  GEOID HEIGHT    -        -33.671 (meters)                     GEOID18
 DR9393  NAD 83(2011) X  -  1,215,229.172 (meters)                     COMP
 DR9393  NAD 83(2011) Y  - -4,790,429.069 (meters)                     COMP
 DR9393  NAD 83(2011) Z  -  4,018,288.662 (meters)                     COMP
 DR9393  LAPLACE CORR    -         -1.76  (seconds)                    DEFLEC18
 DR9393
 DR9393  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9393  Standards:
 DR9393         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9393            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9393  -------------------------------------------------------------------
 DR9393  NETWORK    0.63   1.61           0.28   0.23   0.82     -0.05294897
 DR9393  -------------------------------------------------------------------
 DR9393  Click here for local accuracies and other accuracy information.
 DR9393
 DR9393.The horizontal coordinates were established by GPS observations
 DR9393.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9393
 DR9393.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9393.been affixed to the stable North American tectonic plate. See 
 DR9393.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9393
 DR9393.The horizontal coordinates are valid at the epoch date displayed above
 DR9393.which is a decimal equivalence of Year/Month/Day.
 DR9393
 DR9393.The orthometric height was determined by GPS observations and a
 DR9393.high-resolution geoid model using precise GPS observation and
 DR9393.processing techniques.
 DR9393
 DR9393.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9393.GEOID18 height accuracy estimate available here.
 DR9393
 DR9393.Click photographs - Photos may exist for this station.
 DR9393
 DR9393.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9393
 DR9393.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9393
 DR9393.The ellipsoidal height was determined by GPS observations
 DR9393.and is referenced to NAD 83.
 DR9393
 DR9393. The following values were computed from the NAD 83(2011) position.
 DR9393
 DR9393;                    North         East     Units Scale Factor Converg.
 DR9393;SPC MD       -   182,226.870   506,473.675   MT  0.99997743   +0 46 29.2
 DR9393;SPC MD       -   597,855.99  1,661,655.72   sFT  0.99997743   +0 46 29.2
 DR9393;UTM  18      - 4,350,544.536   433,990.880   MT  0.99965365   -0 29 05.7
 DR9393
 DR9393!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9393!SPC MD       -   1.00000215  x   0.99997743  =   0.99997958
 DR9393!UTM  18      -   1.00000215  x   0.99965365  =   0.99965580
 DR9393
 DR9393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3399050544(NAD 83)
 DR9393
 DR9393                          SUPERSEDED SURVEY CONTROL
 DR9393
 DR9393.No superseded survey control is available for this station.
 DR9393
 DR9393_MARKER: DD = SURVEY DISK
 DR9393_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9393_STAMPING: BENNETT RESET 2021
 DR9393_MARK LOGO: MD-029
 DR9393_PROJECTION: FLUSH
 DR9393_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9393_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9393+STABILITY: SURFACE MOTION
 DR9393_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9393+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9393
 DR9393  HISTORY     - Date     Condition        Report By
 DR9393  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9393
 DR9393                          STATION DESCRIPTION
 DR9393
 DR9393'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9393'THE MARK IS LOCATED ABOUT 6.6 MI (10.6 KM) EAST-SOUTHEAST OF GALENA,
 DR9393'4.9 MI (7.9 KM) NORTHEAST OF MILLINGTON AND 3.2 MI (5.1 KM) EAST OF
 DR9393'MASSEY.
 DR9393'
 DR9393'TO REACH THE MARK FROM THE JUNCTION OF MD 313 AND MD 330 E, GO
 DR9393'EAST-SOUTHEAST ON MD 330 E FOR 3.41 MI (5.49 KM) TO THE MARK ON THE
 DR9393'LEFT.
 DR9393'
 DR9393'THE MARK IS 477.9 FT (145.7 M) WEST OF THE INTERSECTION OF MD330
 DR9393'MARYLAND LINE ROAD AND WAECKER ROAD, 465.25 FT (141.8 M) WEST OF A
 DR9393'UTILITY POLE NUMBERED 882X AND 882, 252.9 FT (77.1 M) SOUTH-SOUTHWEST
 DR9393'OF A UTILITY POLE NUMBERED DPL29 AND 42366-27278, 213.5 FT (65.1 M)
 DR9393'WEST OF A METAL POST WITH WITH SPEED LIMIT SIGN, 21.6 FT (6.6 M) NORTH
 DR9393'OF THE CENTERLINE OF STATE ROUTE 330 SET IN THE TOP OF A 12-IN (30 CM)
 DR9393'ROUND CONCRETE POST AND ABOUT 1 FT (0.3 M) LOWER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6059 ***********************************************************************
 HV6059  DESIGNATION -  BENONI 2
 HV6059  PID         -  HV6059
 HV6059  STATE/COUNTY-  MD/TALBOT
 HV6059  COUNTRY     -  US
 HV6059  USGS QUAD   -  OXFORD (2016)
 HV6059
 HV6059                         *CURRENT SURVEY CONTROL
 HV6059  ______________________________________________________________________
 HV6059* NAD 83(1991) POSITION- 38 40 13.63890(N) 076 12 00.22724(W)   ADJUSTED
 HV6059* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6059  ______________________________________________________________________
 HV6059  GEOID HEIGHT    -        -34.608 (meters)                     GEOID18
 HV6059  LAPLACE CORR    -         -4.41  (seconds)                    DEFLEC18
 HV6059  HORZ ORDER      -  THIRD
 HV6059
 HV6059.The horizontal coordinates were established by classical geodetic methods
 HV6059.and adjusted by the National Geodetic Survey in January 1992.
 HV6059
 HV6059.The orthometric height was scaled from a topographic map.
 HV6059
 HV6059.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6059.GEOID18 height accuracy estimate available here.
 HV6059
 HV6059.Click photographs - Photos may exist for this station.
 HV6059
 HV6059.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6059
 HV6059. The following values were computed from the NAD 83(1991) position.
 HV6059
 HV6059;                    North         East     Units Scale Factor Converg.
 HV6059;SPC MD       -   111,729.447   469,612.007   MT  0.99995624   +0 30 07.4
 HV6059;SPC MD       -   366,565.69  1,540,718.73   sFT  0.99995624   +0 30 07.4
 HV6059;UTM  18      - 4,280,890.880   395,602.433   MT  0.99973421   -0 44 59.7
 HV6059
 HV6059!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6059!SPC MD       -   1.00000531  x   0.99995624  =   0.99996155
 HV6059!UTM  18      -   1.00000531  x   0.99973421  =   0.99973952
 HV6059
 HV6059:                Primary Azimuth Mark                     Grid Az
 HV6059:SPC MD       -  MUTTON                                   024 32 50.4
 HV6059:UTM  18      -  MUTTON                                   025 47 57.5
 HV6059
 HV6059_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9560280890(NAD 83)
 HV6059
 HV6059|---------------------------------------------------------------------|
 HV6059| PID    Reference Object                     Distance      Geod. Az  |
 HV6059|                                                           dddmmss.s |
 HV6059| HV5997 MUTTON                              APPROX. 2.2 KM 0250257.8 |
 HV6059| CX2086 BENONI 2 RM                           7.450 METERS 04202     |
 HV6059|---------------------------------------------------------------------|
 HV6059
 HV6059                          SUPERSEDED SURVEY CONTROL
 HV6059
 HV6059  NAD 83(1986)-  38 40 13.63569(N)    076 12 00.24279(W) AD(       ) 3
 HV6059  NAD 27      -  38 40 13.20500(N)    076 12 01.45000(W) AD(       ) 3
 HV6059  USSD        -  38 40 13.59500(N)    076 12 01.25800(W) AD(       ) 3
 HV6059
 HV6059.Superseded values are not recommended for survey control.
 HV6059
 HV6059.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6059.See file dsdata.pdf to determine how the superseded data were derived.
 HV6059
 HV6059
 HV6059  HISTORY     - Date     Condition        Report By
 HV6059  HISTORY     - 1900     MONUMENTED       CGS
 HV6059  HISTORY     - 1909     GOOD             CGS
 HV6059  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6059  HISTORY     - 1980     MARK NOT FOUND   NGS
 HV6059
 HV6059                          STATION DESCRIPTION
 HV6059
 HV6059'DESCRIBED BY COAST AND GEODETIC SURVEY 1909
 HV6059'ON THE NORTHERN SHORE OF CHOPTANK RIVER, ON BENONI POINT, AT
 HV6059'WESTERN SIDE OF ENTRANCE TO TRED AVON RIVER, AND ABOUT 1-3/8
 HV6059'MILES NW OF CHOPTANK RIVER LIGHT.  STATION IS ABOUT 5 FEET ABOVE
 HV6059'HIGH WATER, 9 YARDS SSW OF FOOT OF KNOLL AND EDGE OF MARSH, 4
 HV6059'YARDS NE OF EDGE OF BANK, 25 YARDS ESE OF POINT OF BANK, 30 YARDS
 HV6059'N BY W OF POINT OF MARSH, AND 100 YARDS SW OF A COVE.  STATION IS
 HV6059'MARKED BY A 4-INCH TILE PIPE WITH TOP FLUSH WITH GROUND.  NAIL IN
 HV6059'STUB INSIDE OF TILE AND PROJECTING 4 INCHES ABOVE GROUND MARKS
 HV6059'CENTER.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HV6059'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6059'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6059'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6059'TOP OF POST.  IT IS 7.45 METERS (24.44 FEET) FROM STATION N 42
 HV6059'DEG 02 MIN E. DISTANCES AND BEARINGS FROM THE STATION OF OTHER
 HV6059'POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN WATER BUSH,
 HV6059'7.68 METERS (25.20 FEET), N 38 DEG 52 MIN W.  NAIL IN BLAZE IN
 HV6059'WATER BUSH, 4.54 METERS (14.89 FEET), N 11 DEG 34 MIN E.  NEAR
 HV6059'PEAK OF SMALL HOUSE, 1-3/4 MILES, N 25 DEG 49 MIN E.  LEFT CORNER
 HV6059'OF BURNT HOUSE, 2 MILES, N 41 DEG 13 MIN E.  PEAK OF NEAR GABLE OF
 HV6059'LARGE HOUSE, 1-3/4 MILES, N 57 DEG 29 MIN E.  NAIL IN BLAZE IN
 HV6059'WATER BUSH, 10.4 METERS (34.1 FEET), N 68 DEG 9 MIN E.  LEFT
 HV6059'CORNER OF HOUSE, 1-3/8 MILES, N 86 DEG 55 MIN E.
 HV6059
 HV6059                          STATION RECOVERY (1940)
 HV6059
 HV6059'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6059'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  MAY BE UNDER THICK
 HV6059'LAYER OF SEA WEED.  POINT SHOWS CONSIDERABLE ERISION.  REFERENCE
 HV6059'BUSHES DESTROYED.
 HV6059'
 HV6059'REFERENCE MARK SEARCHED FOR BUT NOT RECOVERED.  MAY BE UNDER THICK
 HV6059'LAYER OF SEA WEED.
 HV6059
 HV6059                          STATION RECOVERY (1980)
 HV6059
 HV6059'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 (WL)
 HV6059'BENONI 2 DESTROYED 700 FEET OFF SHORE.
 HV6059'
 HV6059'LOOK FOR BY AZIMUTH AND DISTANCE FROM USE MONUMENT BENONI.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6424 ***********************************************************************
 HV6424  DESIGNATION -  BENTLEY MSFC 1910
 HV6424  PID         -  HV6424
 HV6424  STATE/COUNTY-  MD/DORCHESTER
 HV6424  COUNTRY     -  US
 HV6424  USGS QUAD   -  HONGA (2016)
 HV6424
 HV6424                         *CURRENT SURVEY CONTROL
 HV6424  ______________________________________________________________________
 HV6424* NAD 83(1991) POSITION- 38 17 38.02764(N) 076 10 38.52237(W)   ADJUSTED
 HV6424* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6424  ______________________________________________________________________
 HV6424  GEOID HEIGHT    -        -35.316 (meters)                     GEOID18
 HV6424  LAPLACE CORR    -         -3.92  (seconds)                    DEFLEC18
 HV6424  HORZ ORDER      -  THIRD
 HV6424
 HV6424.The horizontal coordinates were established by classical geodetic methods
 HV6424.and adjusted by the National Geodetic Survey in January 1992.
 HV6424
 HV6424.The orthometric height was scaled from a topographic map.
 HV6424
 HV6424.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6424.GEOID18 height accuracy estimate available here.
 HV6424
 HV6424.Click photographs - Photos may exist for this station.
 HV6424
 HV6424.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6424
 HV6424. The following values were computed from the NAD 83(1991) position.
 HV6424
 HV6424;                    North         East     Units Scale Factor Converg.
 HV6424;SPC MD       -    69,949.608   471,963.647   MT  1.00000107   +0 30 58.7
 HV6424;SPC MD       -   229,493.01  1,548,434.07   sFT  1.00000107   +0 30 58.7
 HV6424;UTM  18      - 4,239,079.859   397,042.494   MT  0.99973055   -0 43 46.8
 HV6424
 HV6424!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6424!SPC MD       -   1.00000542  x   1.00000107  =   1.00000649
 HV6424!UTM  18      -   1.00000542  x   0.99973055  =   0.99973597
 HV6424
 HV6424:                Primary Azimuth Mark                     Grid Az
 HV6424:SPC MD       -  BRIDGE MSFC 1910                         283 45 08.5
 HV6424:UTM  18      -  BRIDGE MSFC 1910                         284 59 54.0
 HV6424
 HV6424_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9704239079(NAD 83)
 HV6424
 HV6424|---------------------------------------------------------------------|
 HV6424| PID    Reference Object                     Distance      Geod. Az  |
 HV6424|                                                           dddmmss.s |
 HV6424| HV6422 HOOPERSVILLE ME CHURCH CUPOLA       APPROX. 3.8 KM 1832919.3 |
 HV6424| HV6426 BRIDGE MSFC 1910                    APPROX. 2.6 KM 2841607.2 |
 HV6424|---------------------------------------------------------------------|
 HV6424
 HV6424                          SUPERSEDED SURVEY CONTROL
 HV6424
 HV6424  NAD 83(1986)-  38 17 38.02703(N)    076 10 38.53975(W) AD(       ) 3
 HV6424  NAD 27      -  38 17 37.58400(N)    076 10 39.76100(W) AD(       ) 3
 HV6424  USSD        -  38 17 37.96600(N)    076 10 39.50100(W) AD(       ) 3
 HV6424
 HV6424.Superseded values are not recommended for survey control.
 HV6424
 HV6424.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6424.See file dsdata.pdf to determine how the superseded data were derived.
 HV6424
 HV6424_MARKER: H = DRILL HOLE
 HV6424_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6424_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6424+STABILITY: SURFACE MOTION
 HV6424
 HV6424  HISTORY     - Date     Condition        Report By
 HV6424  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6424  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6424
 HV6424                          STATION DESCRIPTION
 HV6424
 HV6424'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6424'STATION IS ON THE SOUTHWESTERN SHORE OF HONGA RIVER, ON THE N
 HV6424'SIDE OF BENTLEY POINT, ABOUT 2 MILES S OF WROTEN ISLAND, AND
 HV6424'1-1/2 MILES E OF DRAWBRIDGE AT FERRY POINT, ON MARSH ABOUT 1 FOOT
 HV6424'ABOVE HIGH WATER, 30 YARDS SW OF SHORE, 45 YARDS E OF SHORE, AND
 HV6424'50 YARDS SE BY S OF SMALL MARSH POINT.  STATION MARK IS MARKED
 HV6424'BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV6424'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6424'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6424'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6424'SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED
 HV6424'WITH TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES
 HV6424'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6424'FOLLOWS--NEAR PEAK OF HOUSE, 7/8 MILE, S 13 DEG 07 MIN W.  CENTER
 HV6424'DRAW OF HOOPER ISLAND BRIDGE, 1-1/2 MILES, N 79 DEG 19 MIN W.  PEAK
 HV6424'OF DRAW TENDERS CABIN, 1-5/8 MILES, N 77 DEG 05 MIN W.  NEAR PEAK
 HV6424'OF OYSTER HOUSE, 4-1/4 MILES, N 55 DEG 54 MIN W.  NEAR PEAK
 HV6424'OF LARGE HOUSE, 3-1/4 MILES, N 50 DEG 54 MIN W.  RIGHT EDGE OF BARN,
 HV6424'1-3/4 MILES, N 24 DEG 51 MIN W.  LEFT CHIMNEY OF HOUSE, 2-1/8
 HV6424'MILES, N 04 DEG 59 MIN W.  CENTER OF OLD WINDMILL, 2-1/2
 HV6424'MILES, N 60 DEG 17 MIN E.  STACK OF OYSTER HOUSE AT HOOPER
 HV6424'ISLAND WHARF, 2-1/2 MILES, S 08 DEG 40 MIN E.
 HV6424
 HV6424                          STATION RECOVERY (1942)
 HV6424
 HV6424'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6424'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE HOUR,
 HV6424'BUT NO TRACE OF IT COULD BE FOUND.  IT IS RECOMMENDED THAT THIS
 HV6424'STATION BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6204 ***********************************************************************
 HV6204  DESIGNATION -  BENTON
 HV6204  PID         -  HV6204
 HV6204  STATE/COUNTY-  MD/QUEEN ANNES
 HV6204  COUNTRY     -  US
 HV6204  USGS QUAD   -  KENT ISLAND (2016)
 HV6204
 HV6204                         *CURRENT SURVEY CONTROL
 HV6204  ______________________________________________________________________
 HV6204* NAD 83(1991) POSITION- 38 55 52.90318(N) 076 21 45.80367(W)   ADJUSTED
 HV6204* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6204  ______________________________________________________________________
 HV6204  GEOID HEIGHT    -        -33.626 (meters)                     GEOID18
 HV6204  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 HV6204  HORZ ORDER      -  FIRST
 HV6204
 HV6204.The horizontal coordinates were established by classical geodetic methods
 HV6204.and adjusted by the National Geodetic Survey in January 1992.
 HV6204
 HV6204.The orthometric height was scaled from a topographic map.
 HV6204
 HV6204.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6204.GEOID18 height accuracy estimate available here.
 HV6204
 HV6204.Click photographs - Photos may exist for this station.
 HV6204
 HV6204.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6204
 HV6204. The following values were computed from the NAD 83(1991) position.
 HV6204
 HV6204;                    North         East     Units Scale Factor Converg.
 HV6204;SPC MD       -   140,579.610   455,255.096   MT  0.99995032   +0 23 59.9
 HV6204;SPC MD       -   461,218.27  1,493,616.09   sFT  0.99995032   +0 23 59.9
 HV6204;UTM  18      - 4,310,042.552   381,883.115   MT  0.99977179   -0 51 23.1
 HV6204
 HV6204!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6204!SPC MD       -   1.00000516  x   0.99995032  =   0.99995548
 HV6204!UTM  18      -   1.00000516  x   0.99977179  =   0.99977694
 HV6204
 HV6204:                Primary Azimuth Mark                     Grid Az
 HV6204:SPC MD       -  THOMAS PT SHOAL LH                       240 05 06.3
 HV6204:UTM  18      -  THOMAS PT SHOAL LH                       241 20 29.3
 HV6204
 HV6204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8188310042(NAD 83)
 HV6204
 HV6204|---------------------------------------------------------------------|
 HV6204| PID    Reference Object                     Distance      Geod. Az  |
 HV6204|                                                           dddmmss.s |
 HV6204| CX2090 BENTON RM 1                                        0360122.9 |
 HV6204| CX2091 BENTON RM 2                          25.198 METERS 21145     |
 HV6204| HV6305 THOMAS PT SHOAL LH                  APPROX. 7.3 KM 2402906.2 |
 HV6204| HV6393 ANNAPOLIS ST CAPITOL BLDG DOME      APPROX.12.3 KM 2952305.6 |
 HV6204| HV6365 GREENBURY POINT SHOAL LH            APPROX. 8.9 KM 2971439.7 |
 HV6204| HV6395 ANNAPOLIS NAVAL ACAD CHAPEL         APPROX.12.1 KM 2973032.9 |
 HV6204| CX2092 BENTON RM 3                          24.926 METERS 31737     |
 HV6204|---------------------------------------------------------------------|
 HV6204
 HV6204                          SUPERSEDED SURVEY CONTROL
 HV6204
 HV6204  NAD 83(1986)-  38 55 52.89903(N)    076 21 45.81596(W) AD(       ) 1
 HV6204  NAD 27      -  38 55 52.48700(N)    076 21 46.97400(W) AD(       ) 1
 HV6204
 HV6204.Superseded values are not recommended for survey control.
 HV6204
 HV6204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6204.See file dsdata.pdf to determine how the superseded data were derived.
 HV6204
 HV6204_MARKER: DS = TRIANGULATION STATION DISK
 HV6204_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6204_STAMPING: BENTON 1934
 HV6204_MARK LOGO: CGS
 HV6204_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6204+STABILITY: SURFACE MOTION
 HV6204
 HV6204  HISTORY     - Date     Condition        Report By
 HV6204  HISTORY     - 1934     MONUMENTED       CGS
 HV6204  HISTORY     - 1940     GOOD             CGS
 HV6204  HISTORY     - 1947     SEE DESCRIPTION  CGS
 HV6204  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6204  HISTORY     - 1970     MARK NOT FOUND   NGS
 HV6204
 HV6204                          STATION DESCRIPTION
 HV6204
 HV6204'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6204'THIS FIRST-ORDER STATION IS ON THE W SIDE OF KENT ISLAND, ON THE
 HV6204'E SHORE OF THE CHESAPEAKE BAY, ABOUT 8 MILES ESE OF ANNAPOLIS,
 HV6204'4 MILES SSW OF STEVENSVILLE, AND ABOUT 1.5 MILES S OF THE
 HV6204'MATAPEAKE FERRY LANDING, ON PROPERTY OWNED BY A DR. BENTON.
 HV6204'
 HV6204'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV6204'DISKS SET IN CONCRETE.
 HV6204'
 HV6204'REFERENCE MARK NO.1 IS 0.2 MILE NE OF THE STATION, ABOUT 150
 HV6204'YARDS W OF THE BRICK HOUSE AND 2 YARDS S OF RANGE WITH THE N SIDE
 HV6204'OF THE HOUSE, 4 YARDS S OF THE SE CORNER OF A SHED, 1 YARD W OF
 HV6204'A FENCE LINE, AND 28 YARDS N OF THE GATE MENTIONED ABOVE.  THE
 HV6204'MARK PROJECTS ABOUT 6 INCHES.
 HV6204'
 HV6204'REFERENCE MARK NO.2 IS 25.198 METERS SW OF THE STATION, AND 29
 HV6204'FEET E OF THE SHORE LINE.  MARK PROJECTS ABOUT 4 INCHES.
 HV6204'
 HV6204'REFERENCE MARK NO.3 IS 24.926 METERS NW OF THE STATION AND 34
 HV6204'FEET E OF THE SHORE LINE.  MARK PROJECTS ABOUT 6 INCHES.
 HV6204'
 HV6204'TO REACH FROM THE MATAPEAKE FERRY LANDING, GO E TO WHERE THE
 HV6204'MAIN ROAD TURNS LEFT AND A GRAVEL ROAD GOES RIGHT, FORMING A
 HV6204'T-ROAD INTERSECTION.  TURN RIGHT (S) ON THIS GRAVEL ROAD 1.1
 HV6204'MILES TO A FORK WITH A CHURCH IN IT.  TAKE THE RIGHT HAND ROAD
 HV6204'0.3 MILE TO A FARM ROAD THROUGH A GATE AND ON W TO A BRICK
 HV6204'HOUSE.  TURN IN THIS GATE AND FOLLOW THE FARM ROAD PAST THE
 HV6204'HOUSE, GOING AROUND THE S SIDE OF THE HOUSE, TO A GATE LEADING S
 HV6204'INTO A CLEARED FIELD.  THE STATION IS IN THIS CLEARED FIELD,
 HV6204'1/4 MILE FROM THE HOUSE AND IN APPROXIMATE BEARING OF S 60
 HV6204'DEGREES W FROM IT, AND IS 52 FEET E OF THE HIGH-WATER LINE OF THE
 HV6204'BAY.  THE MARK PROJECTS ABOUT 8 INCHES.
 HV6204'
 HV6204'OBSERVATIONS MADE ON THE ABOVE OBJECTS AND ON THE AZIMUTH MARK
 HV6204'WITH FOUR POSITIONS OF THE CIRCLE.
 HV6204'
 HV6204'A 64-FOOT TOWER CLEARED TO ALL STATIONS EXCEPT LOVE, 1933.  A
 HV6204'113-FOOT TOWER REQUIRED TO CLEAR TO STATION LOVE, 1933.
 HV6204
 HV6204                          STATION RECOVERY (1940)
 HV6204
 HV6204'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LS)
 HV6204'MARK RECOVERED AS DESCRIBED.
 HV6204'
 HV6204'DESCRIPTION ADEQUATE.
 HV6204'
 HV6204'THE STATION MARK IS A STANDARD BRONZE DISK SET IN THE CENTER OF
 HV6204'THE TOP OF A CONCRETE CYLINDER, FLUSH WITH THE SURFACE OF GROUND
 HV6204'AND STAMPED BENTON 1934.
 HV6204'
 HV6204'REFERENCE MARKS NO.2 AND 3 RECOVERED IN GOOD CONDITION.
 HV6204
 HV6204                          STATION RECOVERY (1947)
 HV6204
 HV6204'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947 (MJT)
 HV6204'THE STATION WAS RECOVERED AS DESCRIBED AND THE STATION MARK WAS
 HV6204'FOUND TO BE IN GOOD CONDITION.  THE STATION MARK WAS VERY CLOSE TO
 HV6204'THE BAY, AND DUE TO EROSION OF THE BANK, IT WAS IMPOSSIBLE TO
 HV6204'BUILD A TOWER OVER IT.  A STATION, BENTON 2, WAS ESTABLISHED,
 HV6204'COMPLETE WITH REFERENCE MARKS AND AZIMUTH MARK.  BOTH REFERENCE
 HV6204'MARKS ESTABLISHED IN 1934 HAVE DISAPPEARED DUE TO EROSION OF THE
 HV6204'BANK, AND THE AZIMUTH MARK IS PRESUMED LOST DUE TO GRADING OF
 HV6204'ADJACENT PROPERTY.  TO REACH THE STATION FROM THE MATAPEAKE
 HV6204'FERRY LANDING, GO E 0.4 MILE, TURN RIGHT ON A BLACKTOP ROAD
 HV6204'FOR 1.5 MILES, TURN RIGHT BETWEEN TWO BRICK PILLARS, BEARING
 HV6204'LEFT AROUND BRICK HOUSE FOR 0.4 MILE, TURN LEFT FOR 0.2 MILE
 HV6204'TO A WHITE CONCRETE HOUSE ON THE RIGHT.  THE STATION IS 100 YARDS
 HV6204'W OF THE HOUSE, 15 FEET E OF THE BANK, AND 16.61 FEET W OF
 HV6204'BENTON 2, WHICH IS 8 INCHES BELOW THE SURFACE OF THE
 HV6204'GROUND.  THE MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS
 HV6204'STAMPED BENTON 1934.
 HV6204
 HV6204                          STATION RECOVERY (1960)
 HV6204
 HV6204'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6204'THE STATION SHOULD BE CONSIDERED LOST.  APPROX. 100 FEET OF SHORE
 HV6204'HAS ERODED SINCE 1947 (LAST RECOVERY).  MEASUREMENTS INDICATE THAT
 HV6204'THE STATION HAS WASHED OUT.
 HV6204
 HV6204                          STATION RECOVERY (1970)
 HV6204
 HV6204'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (LFS)
 HV6204'STATION WAS SEARCHED FOR BUT NOT RECOVERED.  IN 1947 IT WAS
 HV6204'REPORTED BY M.J.T. THAT THE STATION WAS RECOVERED BUT DUE TO
 HV6204'EROSION IT WAS TO CLOSE TO THE BAY TO BUILD A TOWER OVER SO AT
 HV6204'THAT TIME STATION BENTON 2 WAS ESTABLISHED.  IT WAS ALSO REPORTED
 HV6204'AT THAT TIME THE REFERENCE MARKS WERE GONE BECAUSE OF EROSION.
 HV6204'THE AZIMUTH MARK WAS PRESUMED LOST DUE TO GRADING OF ADJACENT
 HV6204'PROPERTY.  RECENTLY A MARK WAS REPORTED FOUND WHICH WHEN
 HV6204'INVESTIGATED WAS FOUND TO BE REFERENCE MARK NO. 1 (AZIMUTH
 HV6204'MARK) AND LYING IN MARSHLAND.  THE DISK WAS RECLAIMED AT THIS
 HV6204'TIME.
 HV6204'
 HV6204'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV6204'4.0 MILES SOUTH OF STEVENSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6193 ***********************************************************************
 HV6193  DESIGNATION -  BENTON 2
 HV6193  PID         -  HV6193
 HV6193  STATE/COUNTY-  MD/QUEEN ANNES
 HV6193  COUNTRY     -  US
 HV6193  USGS QUAD   -  KENT ISLAND (2016)
 HV6193
 HV6193                         *CURRENT SURVEY CONTROL
 HV6193  ______________________________________________________________________
 HV6193* NAD 83(1991) POSITION- 38 55 52.84581(N) 076 21 45.60671(W)   ADJUSTED
 HV6193* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6193  ______________________________________________________________________
 HV6193  GEOID HEIGHT    -        -33.626 (meters)                     GEOID18
 HV6193  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 HV6193  HORZ ORDER      -  SECOND
 HV6193
 HV6193.The horizontal coordinates were established by classical geodetic methods
 HV6193.and adjusted by the National Geodetic Survey in January 1992.
 HV6193
 HV6193.The orthometric height was scaled from a topographic map.
 HV6193
 HV6193.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6193.GEOID18 height accuracy estimate available here.
 HV6193
 HV6193.Click photographs - Photos may exist for this station.
 HV6193
 HV6193.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6193
 HV6193. The following values were computed from the NAD 83(1991) position.
 HV6193
 HV6193;                    North         East     Units Scale Factor Converg.
 HV6193;SPC MD       -   140,577.874   455,259.852   MT  0.99995032   +0 24 00.0
 HV6193;SPC MD       -   461,212.57  1,493,631.70   sFT  0.99995032   +0 24 00.0
 HV6193;UTM  18      - 4,310,040.712   381,887.831   MT  0.99977178   -0 51 23.0
 HV6193
 HV6193!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6193!SPC MD       -   1.00000516  x   0.99995032  =   0.99995548
 HV6193!UTM  18      -   1.00000516  x   0.99977178  =   0.99977693
 HV6193
 HV6193:                Primary Azimuth Mark                     Grid Az
 HV6193:SPC MD       -  BENTON 2 AZ MK                           051 25 00.2
 HV6193:UTM  18      -  BENTON 2 AZ MK                           052 40 23.2
 HV6193
 HV6193_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8188710040(NAD 83)
 HV6193
 HV6193|---------------------------------------------------------------------|
 HV6193| PID    Reference Object                     Distance      Geod. Az  |
 HV6193|                                                           dddmmss.s |
 HV6193| CX2093 BENTON 2 AZ MK                                     0514900.2 |
 HV6193| CX2095 BENTON 2 RM 2                        30.812 METERS 18911     |
 HV6193| HV6331 WANN RADIO MAST                     APPROX.10.3 KM 2765859.0 |
 HV6193| HV6204 BENTON                                5.064 METERS 29027     |
 HV6193| CX2094 BENTON 2 RM 1                        25.018 METERS 34727     |
 HV6193|---------------------------------------------------------------------|
 HV6193
 HV6193                          SUPERSEDED SURVEY CONTROL
 HV6193
 HV6193  NAD 83(1986)-  38 55 52.84166(N)    076 21 45.61898(W) AD(       ) 2
 HV6193  NAD 27      -  38 55 52.43000(N)    076 21 46.77700(W) AD(       ) 2
 HV6193
 HV6193.Superseded values are not recommended for survey control.
 HV6193
 HV6193.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6193.See file dsdata.pdf to determine how the superseded data were derived.
 HV6193
 HV6193_MARKER: DS = TRIANGULATION STATION DISK
 HV6193_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6193_STAMPING: BENTON 2 1947
 HV6193_MARK LOGO: CGS
 HV6193_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6193+STABILITY: SURFACE MOTION
 HV6193
 HV6193  HISTORY     - Date     Condition        Report By
 HV6193  HISTORY     - 1947     MONUMENTED       CGS
 HV6193  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6193  HISTORY     - 1970     MARK NOT FOUND   NGS
 HV6193
 HV6193                          STATION DESCRIPTION
 HV6193
 HV6193'DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (MJT)
 HV6193'THE STATION IS LOCATED ON THE E SHORE OF CHESAPEAKE BAY, ON THE
 HV6193'W SIDE OF KENT ISLAND, ABOUT 8 MILES ESE OF ANNAPOLIS, AND 1-1/2
 HV6193'MILES S OF THE MATAPEAKE FERRY LANDING.  IT IS 100 YARDS W OF A
 HV6193'WHITE CONCRETE HOUSE, 250 YARDS S OF A RED AND WHITE WOODEN TOWER
 HV6193'ON THE SHORE, 25 FEET E OF THE BANK, AND 16.61 FEET E OF BENTON
 HV6193'1934.  MARK IS A BRONZE STATION DISK STAMPED BENTON 2 1947, IS
 HV6193'SET IN THE TOP OF A CONCRETE POST, AND IS 8 INCHES BELOW THE
 HV6193'SURFACE OF THE GROUND.  UNDERGROUND MARK IS A BRONZE STATION DISK
 HV6193'SET IN CONCRETE.
 HV6193'
 HV6193'REFERENCE MARK 1 IS 82.08 FEET N OF THE STATION AND 15 FEET E
 HV6193'OF THE BANK.  IT IS A BRONZE REFERENCE DISK STAMPED BENTON 2 NO 1
 HV6193'1947, SET IN CONCRETE, AND FLUSH WITH THE GROUND.
 HV6193'
 HV6193'REFERENCE MARK 2 IS 101.09 FEET S OF THE STATION AND 25 FEET E
 HV6193'OF THE BANK.  IT IS A BRONZE REFERENCE DISK STAMPED BENTON 2 NO 2
 HV6193'1947, SET IN CONCRETE, AND FLUSH WITH THE GROUND.
 HV6193'
 HV6193'TO REACH THE STATION FROM THE MATAPEAKE FERRY LANDING, GO E FOR
 HV6193'0.4 MILE, TURN RIGHT AND GO 1.5 MILES, TURN RIGHT BETWEEN TWO BRICK
 HV6193'PILLARS, BEARING LEFT AROUND A BRICK HOUSE FOR 0.4 MILE, TURN LEFT
 HV6193'AND GO 0.2 MILE TO A WHITE CONCRETE HOUSE ON THE RIGHT.  THE
 HV6193'STATION IS ON THE SHORE BEHIND THE HOUSE AS DESCRIBED.
 HV6193'
 HV6193'THE AZIMUTH MARK IS 0.3 MILE NE OF THE STATION, 50 FEET E OF THE
 HV6193'SE CORNER OF A LARGE BRICK HOUSE, 5 FEET E OF A 36-INCH TREE WITH
 HV6193'A LARGE TRIANGLE BLAZE, AND 3 FEET SW OF A WHITE WITNESS POST.  TO
 HV6193'REACH THE AZIMUTH FROM THE STATION, GO BACK TO THE BRICK HOUSE AND
 HV6193'THE STATION IS ON THE RIGHT AS DESCRIBED.  THE MARK IS A BRONZE
 HV6193'AZIMUTH DISK STAMPED BENTON 1947, IS SET IN THE TOP OF A
 HV6193'CONCRETE POST, AND PROJECTS ABOUT 6 INCHES.
 HV6193'
 HV6193'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 HV6193
 HV6193                          STATION RECOVERY (1960)
 HV6193
 HV6193'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6193'THE STATION IS LOST.  APPROX. 100 FEET OF SHORE HAS ERODED SINCE
 HV6193'1947.  MEASUREMENTS INDICATE THAT THE STATION HAS WASHED OUT.
 HV6193
 HV6193                          STATION RECOVERY (1970)
 HV6193
 HV6193'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (LFS)
 HV6193'STATION AND REFERENCE MARKS WERE SEARCHED FOR BUT NOT
 HV6193'RECOVERED.  THE AZIMUTH MARK WAS RECOVERED IN GOOD CONDITION.  THE
 HV6193'LARGE BRICK HOUSE NEAR THE AZIMUTH MARK IS GONE AND MARK IS NOW
 HV6193'IN THE BACK YARD OF THE HOME OF THE BRITTS.  STATION WAS DESCRIBED
 HV6193'AS BEING 100 YARDS WEST OF A WHITE CONCRETE HOUSE.  THERE IS A
 HV6193'WHITE STUCCO HOUSE IN THE VICINITY BUT IT IS ONLY 170 FEET TO A
 HV6193'WOODEN BULKHEAD WHICH HAS BEEN BUILT ALONG THIS AND ADJACENT
 HV6193'PROPERTIES.  MOST OF THE RESIDENCES IN THE AREA ARE SUMMER
 HV6193'HOMES AND SO IT WAS DIFFICULT TO OBTAIN ANY INFORMATION ON THE
 HV6193'MARKS.  THE MATAPEAKE FERRY LANDING IS NO LONGER IN OPERATION BUT
 HV6193'OTHERWISE THE TO REACH STATION DESCRIPTION IS ADEQUATE.
 HV6193'
 HV6193'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV6193'4.0 MILES SOUTH OF STEVENSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1528 ***********************************************************************
 HU1528  DESIGNATION -  BERLIN MUNICIPAL TANK
 HU1528  PID         -  HU1528
 HU1528  STATE/COUNTY-  MD/WORCESTER
 HU1528  COUNTRY     -  US
 HU1528  USGS QUAD   -  BERLIN (2016)
 HU1528
 HU1528                         *CURRENT SURVEY CONTROL
 HU1528  ______________________________________________________________________
 HU1528* NAD 83(1991) POSITION- 38 19 53.66803(N) 075 13 08.30586(W)   ADJUSTED
 HU1528  ______________________________________________________________________
 HU1528  GEOID HEIGHT    -        -36.021 (meters)                     GEOID18
 HU1528  LAPLACE CORR    -         -0.53  (seconds)                    DEFLEC18
 HU1528  HORZ ORDER      -  THIRD
 HU1528
 HU1528.The horizontal coordinates were established by classical geodetic methods
 HU1528.and adjusted by the National Geodetic Survey in January 1992.
 HU1528
 HU1528.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1528.GEOID18 height accuracy estimate available here.
 HU1528
 HU1528.Click photographs - Photos may exist for this station.
 HU1528
 HU1528.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1528
 HU1528. The following values were computed from the NAD 83(1991) position.
 HU1528
 HU1528;                    North         East     Units Scale Factor Converg.
 HU1528;SPC MD       -    75,326.717   555,714.238   MT  0.99999466   +1 07 04.2
 HU1528;SPC MD       -   247,134.40  1,823,205.80   sFT  0.99999466   +1 07 04.2
 HU1528;UTM  18      - 4,242,627.618   480,861.555   MT  0.99960451   -0 08 08.9
 HU1528
 HU1528_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8086142627(NAD 83)
 HU1528
 HU1528                          SUPERSEDED SURVEY CONTROL
 HU1528
 HU1528  NAD 83(1986)-  38 19 53.65321(N)    075 13 08.33415(W) AD(       ) 3
 HU1528  NAD 27      -  38 19 53.23600(N)    075 13 09.65400(W) AD(       ) 3
 HU1528
 HU1528.Superseded values are not recommended for survey control.
 HU1528
 HU1528.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1528.See file dsdata.pdf to determine how the superseded data were derived.
 HU1528
 HU1528_MARKER: 53 = ELEVATED TANK
 HU1528_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1528+SATELLITE: SATELLITE OBSERVATIONS - December 28, 2003
 HU1528
 HU1528  HISTORY     - Date     Condition        Report By
 HU1528  HISTORY     - 1955     FIRST OBSERVED   CGS
 HU1528  HISTORY     - 1962     GOOD             CGS
 HU1528  HISTORY     - 1991     GOOD             USPSQD
 HU1528  HISTORY     - 20031228 GOOD             USPSQD
 HU1528
 HU1528                          STATION DESCRIPTION
 HU1528
 HU1528'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 HU1528'THE STATION IS LOCATED AT THE CORNER OF FRANKLIN AND BRYAN AVENUES
 HU1528'AT THE NORTHEAST EDGE OF BERLIN.  THE TANK IS SUPPORTED BY SIX
 HU1528'STEEL LEGS, SILVER IN COLOR, AND ABOUT 150 FEET HIGH.  THE POINT
 HU1528'OBSERVED WAS THE APEX OF THE TANK.
 HU1528
 HU1528                          STATION RECOVERY (1962)
 HU1528
 HU1528'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1528'THE STATION WAS RECOVERED AS DESCRIBED AND IN GOOD CONDITION.
 HU1528'
 HU1528'THE INTERSECTING POINT WAS THE TOP CENTER.
 HU1528
 HU1528                          STATION RECOVERY (1991)
 HU1528
 HU1528'RECOVERY NOTE BY US POWER SQUADRON 1991 (ECD)
 HU1528'RECOVERED IN GOOD CONDITION.
 HU1528
 HU1528                          STATION RECOVERY (2003)
 HU1528
 HU1528'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU1528'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2584 ***********************************************************************
 HU2584  DESIGNATION -  BERLIN RESET
 HU2584  PID         -  HU2584
 HU2584  STATE/COUNTY-  MD/WORCESTER
 HU2584  COUNTRY     -  US
 HU2584  USGS QUAD   -  BERLIN (2016)
 HU2584
 HU2584                         *CURRENT SURVEY CONTROL
 HU2584  ______________________________________________________________________
 HU2584* NAD 83(1991) POSITION- 38 19 38.24903(N) 075 13 38.17835(W)   ADJUSTED
 HU2584* NAVD 88 ORTHO HEIGHT -    13.0   (meters)       43.    (feet) VERTCON3
 HU2584  ______________________________________________________________________
 HU2584  GEOID HEIGHT    -        -36.025 (meters)                     GEOID18
 HU2584  LAPLACE CORR    -         -0.50  (seconds)                    DEFLEC18
 HU2584  HORZ ORDER      -  FIRST
 HU2584
 HU2584.The horizontal coordinates were established by classical geodetic methods
 HU2584.and adjusted by the National Geodetic Survey in January 1992.
 HU2584
 HU2584.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2584.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2584
 HU2584.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2584.GEOID18 height accuracy estimate available here.
 HU2584
 HU2584.Click photographs - Photos may exist for this station.
 HU2584
 HU2584.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2584
 HU2584. The following values were computed from the NAD 83(1991) position.
 HU2584
 HU2584;                    North         East     Units Scale Factor Converg.
 HU2584;SPC MD       -    74,837.257   554,998.079   MT  0.99999536   +1 06 45.4
 HU2584;SPC MD       -   245,528.57  1,820,856.20   sFT  0.99999536   +1 06 45.4
 HU2584;UTM  18      - 4,242,154.128   480,135.142   MT  0.99960486   -0 08 27.4
 HU2584
 HU2584!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2584!SPC MD       -   1.00000362  x   0.99999536  =   0.99999898
 HU2584!UTM  18      -   1.00000362  x   0.99960486  =   0.99960848
 HU2584
 HU2584:                Primary Azimuth Mark                     Grid Az
 HU2584:SPC MD       -  BERLIN AZ MK                             212 32 18.7
 HU2584:UTM  18      -  BERLIN AZ MK                             213 47 31.5
 HU2584
 HU2584_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8013542154(NAD 83)
 HU2584
 HU2584|---------------------------------------------------------------------|
 HU2584| PID    Reference Object                     Distance      Geod. Az  |
 HU2584|                                                           dddmmss.s |
 HU2584| HU1529 BERLIN STANDPIPE                    APPROX. 0.8 KM 0902816.4 |
 HU2584| HU2611 BERLIN RM 1                          49.201 METERS 10058     |
 HU2584| DC7824 BERLIN AZ MK                                       2133904.1 |
 HU2584| HU2612 BERLIN RM 2                          45.736 METERS 21737     |
 HU2584| HU2614 BERLIN RM 4                          15.564 METERS 30413     |
 HU2584| HU2613 BERLIN RM 3 AZIMUTH                                3102827.8 |
 HU2584|---------------------------------------------------------------------|
 HU2584
 HU2584                          SUPERSEDED SURVEY CONTROL
 HU2584
 HU2584  NAD 83(1986)-  38 19 38.23432(N)    075 13 38.20682(W) AD(       ) 1
 HU2584  NAD 27      -  38 19 37.81847(N)    075 13 39.52420(W) AD(       ) 1
 HU2584  NGVD 29 (03/28/90)   13.2    (m)           43.     (f) VERT ANG       
 HU2584
 HU2584.Superseded values are not recommended for survey control.
 HU2584
 HU2584.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2584.See file dsdata.pdf to determine how the superseded data were derived.
 HU2584
 HU2584_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2584_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2584_STAMPING: BERLIN 1932 1984
 HU2584_MARK LOGO: NGS
 HU2584_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2584_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2584+STABILITY: SURFACE MOTION
 HU2584_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2584+SATELLITE: SATELLITE OBSERVATIONS - December 20, 2005
 HU2584
 HU2584  HISTORY     - Date     Condition        Report By
 HU2584  HISTORY     - 1984     MONUMENTED       NGS
 HU2584  HISTORY     - 20031230 GOOD             USPSQD
 HU2584  HISTORY     - 20051220 GOOD             USPSQD
 HU2584
 HU2584                          STATION DESCRIPTION
 HU2584
 HU2584'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2584'THE STATION IS LOCATED ABOUT 15.75 KM (9.80 MI) SOUTHWEST OF OCEAN
 HU2584'CITY, 6.5 KM (4.05 MI) EAST OF LIBERTYTOWN AND 0.75 KM (0.45 MI) WEST
 HU2584'OF THE CENTER OF BERLIN.  OWNERSHIP--NORMAN E. WAINWRIGHT, 101 ESHAM
 HU2584'AVENUE, BERLIN, MARYLAND.
 HU2584'TO REACH FROM THE POST OFFICE AT BERLIN, GO NORTHWEST ON BROAD STREET
 HU2584'FOR 0.65 KM (0.40 MI) TO A SIDE ROAD LEFT AND THE STATION ON THE LEFT,
 HU2584'ATOP A SMALL KNOLL IN THE FRONT YARD OF A HOUSE.
 HU2584'THE STATION MARK IS SET IN A 12-INCH ROUND CONCRETE POST FLUSH WITH
 HU2584'THE GROUND.  IT IS 69.2 M (227.0 FT) SOUTHWEST OF THE CENTER OF BROAD
 HU2584'STREET, 10.1 M (33.1 FT) SOUTHEAST OF THE CENTER OF ESHAM AVENUE, 13.5
 HU2584'M (44.3 FT) N OF THE WEST CORNER OF A HOUSE AT 101 ESHAM AVENUE, 18.3
 HU2584'M (60.0 FT) SOUTHWEST OF A POWERLINE POLE NUMBERED T 1 AND 9.4 M
 HU2584'(30.8 FT) WEST OF THE NORTH CORNER OF THE HOUSE AT 101 ESHAM AVENUE.
 HU2584
 HU2584                          STATION RECOVERY (2003)
 HU2584
 HU2584'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU2584'RECOVERED IN GOOD CONDITION.
 HU2584
 HU2584                          STATION RECOVERY (2005)
 HU2584
 HU2584'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU2584'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6764 ***********************************************************************
 HV6764  DESIGNATION -  BERT
 HV6764  PID         -  HV6764
 HV6764  STATE/COUNTY-  MD/CALVERT
 HV6764  COUNTRY     -  US
 HV6764  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6764
 HV6764                         *CURRENT SURVEY CONTROL
 HV6764  ______________________________________________________________________
 HV6764* NAD 83(1991) POSITION- 38 23 27.69896(N) 076 30 30.74597(W)   ADJUSTED
 HV6764* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV6764  ______________________________________________________________________
 HV6764  GEOID HEIGHT    -        -34.202 (meters)                     GEOID18
 HV6764  LAPLACE CORR    -         -4.26  (seconds)                    DEFLEC18
 HV6764  HORZ ORDER      -  THIRD
 HV6764
 HV6764.The horizontal coordinates were established by classical geodetic methods
 HV6764.and adjusted by the National Geodetic Survey in January 1992.
 HV6764
 HV6764.The orthometric height was scaled from a topographic map.
 HV6764
 HV6764.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6764.GEOID18 height accuracy estimate available here.
 HV6764
 HV6764.Click photographs - Photos may exist for this station.
 HV6764
 HV6764.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6764
 HV6764. The following values were computed from the NAD 83(1991) position.
 HV6764
 HV6764;                    North         East     Units Scale Factor Converg.
 HV6764;SPC MD       -    80,522.678   442,935.048   MT  0.99998541   +0 18 30.4
 HV6764;SPC MD       -   264,181.49  1,453,196.07   sFT  0.99998541   +0 18 30.4
 HV6764;UTM  18      - 4,250,278.983   368,257.008   MT  0.99981375   -0 56 13.1
 HV6764
 HV6764!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6764!SPC MD       -   1.00000447  x   0.99998541  =   0.99998988
 HV6764!UTM  18      -   1.00000447  x   0.99981375  =   0.99981822
 HV6764
 HV6764:                Primary Azimuth Mark                     Grid Az
 HV6764:SPC MD       -  CUT                                      168 51 56.2
 HV6764:UTM  18      -  CUT                                      170 06 39.7
 HV6764
 HV6764_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6825750278(NAD 83)
 HV6764
 HV6764|---------------------------------------------------------------------|
 HV6764| PID    Reference Object                     Distance      Geod. Az  |
 HV6764|                                                           dddmmss.s |
 HV6764| HV6795 BERTON                              APPROX. 3.7 KM 1680528.8 |
 HV6764| HV6796 CUT                                 APPROX. 3.7 KM 1691026.6 |
 HV6764| CX2096 BERT RM 1                            20.000 METERS 18644     |
 HV6764| CX2097 BERT RM 2                            57.712 METERS 27220     |
 HV6764| HV6767 BROOME ISLAND LIGHTHOUSE            APPROX. 4.2 KM 2814749.5 |
 HV6764|---------------------------------------------------------------------|
 HV6764
 HV6764                          SUPERSEDED SURVEY CONTROL
 HV6764
 HV6764  NAD 83(1986)-  38 23 27.69860(N)    076 30 30.76018(W) AD(       ) 3
 HV6764  NAD 27      -  38 23 27.25100(N)    076 30 31.92400(W) AD(       ) 3
 HV6764
 HV6764.Superseded values are not recommended for survey control.
 HV6764
 HV6764.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6764.See file dsdata.pdf to determine how the superseded data were derived.
 HV6764
 HV6764_MARKER: DS = TRIANGULATION STATION DISK
 HV6764_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6764_STAMPING: BERT 1943
 HV6764_MARK LOGO: CGS
 HV6764_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6764
 HV6764  HISTORY     - Date     Condition        Report By
 HV6764  HISTORY     - 1943     MONUMENTED       CGS
 HV6764  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6764
 HV6764                          STATION DESCRIPTION
 HV6764
 HV6764'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (BHR)
 HV6764'STATION IS ON THE N SHORE OF THE PATUXENT RIVER, APPROXIMATELY 1
 HV6764'MILE S OF THE CROSSROADS AT WALLVILLE, AND 300 YARDS NW OF THE
 HV6764'END OF PETERSONS POINT ON THE PROPERTY OF MR. PETERSON.  IT IS ON
 HV6764'A BLUFF FACING THE RIVER ON THE E SIDE OF AN OPEN FIELD EXTENDING
 HV6764'DOWN TO THE BLUFF, 200 FEET N OF THE FACE OF THE BLUFF, 4.4 FEET
 HV6764'W OF A FENCE ON THE E EDGE OF THE FIELD, AND 50 FEET S OF THE S
 HV6764'EDGE OF A LARGE DEPRESSION IN THE E EDGE OF THE FIELD.  MARK IS
 HV6764'ABOUT 4 INCHES ABOVE THE GROUND.
 HV6764'
 HV6764'STATION AND REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE AT
 HV6764'THE CENTERS OF THE TOPS OF TILES WHICH ARE SET IN BLOCKS OF CONCRETE.
 HV6764'
 HV6764'REFERENCE MARK 1 IS 140 FEET N OF THE FACE OF THE BLUFF AND
 HV6764'APPROXIMATELY 4 FEET W OF THE FENCE ON THE E EDGE OF THE FIELD.
 HV6764'MARK IS 2 INCHES ABOVE THE GROUND.
 HV6764'
 HV6764'REFERENCE MARK 2 IS 190 FEET W OF THE FENCE ON THE E EDGE OF THE
 HV6764'FIELD AND APPROXIMATELY 6 FEET NE OF BUSHES BORDERING THE TOP OF
 HV6764'THE BLUFF.  MARK IS 4 INCHES ABOVE THE GROUND.
 HV6764
 HV6764                          STATION RECOVERY (1960)
 HV6764
 HV6764'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6764'STATION MARK AND REFERENCE MARKS WERE NOT RECOVERED AFTER A
 HV6764'THOROUGH SEARCH.  THE STATION MAY STILL BE IN EXISTENCE BUT
 HV6764'NON-RECOVERABLE DUE TO THE INADEQUACY OF THE PUBLISHED DESCRIPTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7760 ***********************************************************************
 HV7760  DESIGNATION -  BERWYN PRESB CH SPIRE
 HV7760  PID         -  HV7760
 HV7760  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7760  COUNTRY     -  US
 HV7760  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7760
 HV7760                         *CURRENT SURVEY CONTROL
 HV7760  ______________________________________________________________________
 HV7760* NAD 83(1991) POSITION- 38 59 46.05310(N) 076 54 15.58851(W)   ADJUSTED
 HV7760  ______________________________________________________________________
 HV7760  GEOID HEIGHT    -        -32.200 (meters)                     GEOID18
 HV7760  LAPLACE CORR    -         -4.78  (seconds)                    DEFLEC18
 HV7760  HORZ ORDER      -  THIRD
 HV7760
 HV7760.The horizontal coordinates were established by classical geodetic methods
 HV7760.and adjusted by the National Geodetic Survey in January 1992.
 HV7760
 HV7760.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7760.GEOID18 height accuracy estimate available here.
 HV7760
 HV7760.Click photographs - Photos may exist for this station.
 HV7760
 HV7760.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7760
 HV7760. The following values were computed from the NAD 83(1991) position.
 HV7760
 HV7760;                    North         East     Units Scale Factor Converg.
 HV7760;SPC MD       -   147,580.482   408,287.589   MT  0.99995205   +0 03 36.2
 HV7760;SPC MD       -   484,186.96  1,339,523.53   sFT  0.99995205   +0 03 36.2
 HV7760;UTM  18      - 4,318,071.604   335,085.335   MT  0.99993490   -1 11 55.0
 HV7760
 HV7760_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3508518071(NAD 83)
 HV7760
 HV7760                          SUPERSEDED SURVEY CONTROL
 HV7760
 HV7760  NAD 83(1986)-  38 59 46.05182(N)    076 54 15.59933(W) AD(       ) 3
 HV7760  NAD 27      -  38 59 45.65597(N)    076 54 16.69501(W) AD(       ) 3
 HV7760
 HV7760.Superseded values are not recommended for survey control.
 HV7760
 HV7760.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7760.See file dsdata.pdf to determine how the superseded data were derived.
 HV7760
 HV7760_MARKER: 90 = CHURCH SPIRE
 HV7760
 HV7760  HISTORY     - Date     Condition        Report By
 HV7760  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7760
 HV7760                          STATION DESCRIPTION
 HV7760
 HV7760'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7760'THE STATION IS THE CENTER OF THE TOP OF THE COLLEGE PARK BERWYN
 HV7760'PRESBYTERIAN CHURCH SPIRE, LOCATED AT GREENBELT ROAD AND 63RD
 HV7760'AVENUE.  IT IS ABOUT 80 FEET ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9400 ***********************************************************************
 DR9400  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9400  DESIGNATION -  BESSICK
 DR9400  PID         -  DR9400
 DR9400  STATE/COUNTY-  MD/KENT
 DR9400  COUNTRY     -  US
 DR9400  USGS QUAD   -  BETTERTON (2017)
 DR9400
 DR9400                         *CURRENT SURVEY CONTROL
 DR9400  ______________________________________________________________________
 DR9400* NAD 83(2011) POSITION- 39 19 52.42502(N) 076 03 35.74942(W)   ADJUSTED
 DR9400* NAD 83(2011) ELLIP HT-   -13.940 (meters)        (09/18/23)   ADJUSTED
 DR9400* NAD 83(2011) EPOCH   -  2010.00
 DR9400* NAVD 88 ORTHO HEIGHT -    19.39  (meters)       63.6   (feet) GPS OBS
 DR9400  ______________________________________________________________________
 DR9400  GEOID HEIGHT    -        -33.338 (meters)                     GEOID18
 DR9400  NAD 83(2011) X  -  1,190,102.085 (meters)                     COMP
 DR9400  NAD 83(2011) Y  - -4,794,597.919 (meters)                     COMP
 DR9400  NAD 83(2011) Z  -  4,020,818.824 (meters)                     COMP
 DR9400  LAPLACE CORR    -         -1.29  (seconds)                    DEFLEC18
 DR9400
 DR9400  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9400  Standards:
 DR9400         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9400            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9400  -------------------------------------------------------------------
 DR9400  NETWORK    0.63   1.53           0.28   0.23   0.78      0.00038246
 DR9400  -------------------------------------------------------------------
 DR9400  Click here for local accuracies and other accuracy information.
 DR9400
 DR9400.The horizontal coordinates were established by GPS observations
 DR9400.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9400
 DR9400.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9400.been affixed to the stable North American tectonic plate. See 
 DR9400.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9400
 DR9400.The horizontal coordinates are valid at the epoch date displayed above
 DR9400.which is a decimal equivalence of Year/Month/Day.
 DR9400
 DR9400.The orthometric height was determined by GPS observations and a
 DR9400.high-resolution geoid model using precise GPS observation and
 DR9400.processing techniques.
 DR9400
 DR9400.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9400.GEOID18 height accuracy estimate available here.
 DR9400
 DR9400.Click photographs - Photos may exist for this station.
 DR9400
 DR9400.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9400
 DR9400.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9400
 DR9400.The ellipsoidal height was determined by GPS observations
 DR9400.and is referenced to NAD 83.
 DR9400
 DR9400. The following values were computed from the NAD 83(2011) position.
 DR9400
 DR9400;                    North         East     Units Scale Factor Converg.
 DR9400;SPC MD       -   185,194.824   481,050.860   MT  0.99998138   +0 35 24.1
 DR9400;SPC MD       -   607,593.35  1,578,247.70   sFT  0.99998138   +0 35 24.1
 DR9400;UTM  18      - 4,354,070.072   408,647.192   MT  0.99970275   -0 40 18.6
 DR9400
 DR9400!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9400!SPC MD       -   1.00000219  x   0.99998138  =   0.99998357
 DR9400!UTM  18      -   1.00000219  x   0.99970275  =   0.99970494
 DR9400
 DR9400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0864754070(NAD 83)
 DR9400
 DR9400                          SUPERSEDED SURVEY CONTROL
 DR9400
 DR9400.No superseded survey control is available for this station.
 DR9400
 DR9400_MARKER: DD = SURVEY DISK
 DR9400_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9400_STAMPING: BESSICK 2021
 DR9400_MARK LOGO: MD-029
 DR9400_PROJECTION: FLUSH
 DR9400_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9400_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9400+STABILITY: SURFACE MOTION
 DR9400_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9400+SATELLITE: SATELLITE OBSERVATIONS - December 26, 2021
 DR9400
 DR9400  HISTORY     - Date     Condition        Report By
 DR9400  HISTORY     - 20211226 MONUMENTED       MDSHA
 DR9400
 DR9400                          STATION DESCRIPTION
 DR9400
 DR9400'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9400'THE MARK IS LOCATED ABOUT 8.5 MI (13.7 KM) NORTH OF CHESTERTOWN, 2.5
 DR9400'MI (4.0 KM) NORTH OF LYNCH, 2.4 MI (3.9 KM) SOUTH OF BETTERTON AND 0.8
 DR9400'MI (1.3 KM) WEST-NORTHWEST OF STILL POND.
 DR9400'
 DR9400'TO REACH THE MARK FROM THE JUNCTION OF MD 213 AND MD 298 W, GO
 DR9400'NORTHWEST ON MD 298 W FOR 2.56 MI (4.12 KM) TO AN INTERSECTION.  TURN
 DR9400'RIGHT AND GO NORTHWEST ON SLIGHT RIGHT ONTO MD 566 FOR 1.19 MI (1.91
 DR9400'KM) TO AN INTERSECTION.  TURN RIGHT AND GO WEST-NORTHWEST ON MD 292 N
 DR9400'FOR 0.87 MI (1.40 KM) TO THE MARK ON THE LEFT.
 DR9400'
 DR9400'THE MARK IS 123.2 FT (37.6 M) OF THE CENTERLINE OF STATE ROUTE MD 864,
 DR9400'115.2 FT (35.1 M) EAST-SOUTHEAST OF A UTILITY POLE NUMBERED C AND P MD
 DR9400'45, 55.2 FT (16.8 M) NORTH-NORTHEAST OF A UTILITY POLE NUMBERED C AND
 DR9400'P MD 43, 49.9 FT (15.2 M) WEST-SOUTHWEST OF THE CENTERLINE OF STATE
 DR9400'ROUTE MD 292, 19.6 FT (6.0 M) NORTHEAST OF THE CENTERLINE OF BESSICKS
 DR9400'CORNER ROAD SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND
 DR9400'ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9401 ***********************************************************************
 DR9401  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9401  DESIGNATION -  BESSICK AZ MK
 DR9401  PID         -  DR9401
 DR9401  STATE/COUNTY-  MD/KENT
 DR9401  COUNTRY     -  US
 DR9401  USGS QUAD   -  BETTERTON (2017)
 DR9401
 DR9401                         *CURRENT SURVEY CONTROL
 DR9401  ______________________________________________________________________
 DR9401* NAD 83(2011) POSITION- 39 19 49.88399(N) 076 03 29.93590(W)   ADJUSTED
 DR9401* NAD 83(2011) ELLIP HT-   -15.326 (meters)        (09/18/23)   ADJUSTED
 DR9401* NAD 83(2011) EPOCH   -  2010.00
 DR9401* NAVD 88 ORTHO HEIGHT -    18.00  (meters)       59.1   (feet) GPS OBS
 DR9401  ______________________________________________________________________
 DR9401  GEOID HEIGHT    -        -33.339 (meters)                     GEOID18
 DR9401  NAD 83(2011) X  -  1,190,248.927 (meters)                     COMP
 DR9401  NAD 83(2011) Y  - -4,794,611.537 (meters)                     COMP
 DR9401  NAD 83(2011) Z  -  4,020,757.332 (meters)                     COMP
 DR9401  LAPLACE CORR    -         -1.32  (seconds)                    DEFLEC18
 DR9401
 DR9401  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9401  Standards:
 DR9401         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9401            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9401  -------------------------------------------------------------------
 DR9401  NETWORK    0.63   1.51           0.28   0.23   0.77     -0.01547372
 DR9401  -------------------------------------------------------------------
 DR9401  Click here for local accuracies and other accuracy information.
 DR9401
 DR9401.The horizontal coordinates were established by GPS observations
 DR9401.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9401
 DR9401.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9401.been affixed to the stable North American tectonic plate. See 
 DR9401.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9401
 DR9401.The horizontal coordinates are valid at the epoch date displayed above
 DR9401.which is a decimal equivalence of Year/Month/Day.
 DR9401
 DR9401.The orthometric height was determined by GPS observations and a
 DR9401.high-resolution geoid model using precise GPS observation and
 DR9401.processing techniques.
 DR9401
 DR9401.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9401.GEOID18 height accuracy estimate available here.
 DR9401
 DR9401.Click photographs - Photos may exist for this station.
 DR9401
 DR9401.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9401
 DR9401.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9401
 DR9401.The ellipsoidal height was determined by GPS observations
 DR9401.and is referenced to NAD 83.
 DR9401
 DR9401. The following values were computed from the NAD 83(2011) position.
 DR9401
 DR9401;                    North         East     Units Scale Factor Converg.
 DR9401;SPC MD       -   185,117.901   481,190.894   MT  0.99998128   +0 35 27.7
 DR9401;SPC MD       -   607,340.98  1,578,707.12   sFT  0.99998128   +0 35 27.7
 DR9401;UTM  18      - 4,353,990.106   408,785.459   MT  0.99970244   -0 40 14.9
 DR9401
 DR9401!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9401!SPC MD       -   1.00000240  x   0.99998128  =   0.99998368
 DR9401!UTM  18      -   1.00000240  x   0.99970244  =   0.99970484
 DR9401
 DR9401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0878553990(NAD 83)
 DR9401
 DR9401                          SUPERSEDED SURVEY CONTROL
 DR9401
 DR9401.No superseded survey control is available for this station.
 DR9401
 DR9401_MARKER: DD = SURVEY DISK
 DR9401_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9401_STAMPING: BESSICK AZ 2021
 DR9401_MARK LOGO: MD-029
 DR9401_PROJECTION: FLUSH
 DR9401_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9401_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9401+STABILITY: SURFACE MOTION
 DR9401_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9401+SATELLITE: SATELLITE OBSERVATIONS - December 26, 2021
 DR9401
 DR9401  HISTORY     - Date     Condition        Report By
 DR9401  HISTORY     - 20211226 MONUMENTED       MDSHA
 DR9401
 DR9401                          STATION DESCRIPTION
 DR9401
 DR9401'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9401'THE MARK IS LOCATED ABOUT 8.4 MI (13.5 KM) NORTH OF CHESTERTOWN, 2.5
 DR9401'MI (4.0 KM) NORTH OF LYNCH, 2.4 MI (3.9 KM) SOUTH OF BETTERTON AND 0.7
 DR9401'MI (1.1 KM) WEST-NORTHWEST OF STILL POND.
 DR9401'
 DR9401'TO REACH THE MARK FROM THE JUNCTION OF MD 213 AND MD 298 W, GO
 DR9401'NORTHWEST ON MD 298 W FOR 2.56 MI (4.12 KM) TO AN INTERSECTION.  TURN
 DR9401'RIGHT AND GO NORTHWEST ON SLIGHT RIGHT ONTO MD 566 FOR 1.19 MI (1.91
 DR9401'KM) TO AN INTERSECTION.  TURN RIGHT AND GO WEST-NORTHWEST ON MD 292 N
 DR9401'FOR 0.77 MI (1.24 KM) TO THE MARK ON THE RIGHT.
 DR9401'
 DR9401'THE MARK IS 147.5 FT (45.0 M) EAST-SOUTHEAST OF A UTILITY POLE
 DR9401'NUMBERED C AND P MD 40, 85.7 FT (26.1 M) OF, 75.0 FT (22.9 M)
 DR9401'NORTHWEST OF THE CENTERLINE OF A GRAVEL ENTRANCE FOR 12844 STILL POND
 DR9401'ROAD, 66.6 FT (20.3 M) NORTH-NORTHEAST OF A UTILITY POLE NUMBERED C
 DR9401'AND P MD 39, 24.5 FT (7.5 M) NORTHEAST OF THE CENTERLINE OF STATE
 DR9401'ROUTE 292 SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND
 DR9401'ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7189 ***********************************************************************
 JV7189  DESIGNATION -  BESSIE
 JV7189  PID         -  JV7189
 JV7189  STATE/COUNTY-  MD/FREDERICK
 JV7189  COUNTRY     -  US
 JV7189  USGS QUAD   -  LIBERTYTOWN (2016)
 JV7189
 JV7189                         *CURRENT SURVEY CONTROL
 JV7189  ______________________________________________________________________
 JV7189* NAD 83(2011) POSITION- 39 29 58.06175(N) 077 12 11.70200(W)   ADJUSTED
 JV7189* NAD 83(2011) ELLIP HT-   156.331 (meters)        (06/27/12)   ADJUSTED
 JV7189* NAD 83(2011) EPOCH   -  2010.00
 JV7189* NAVD 88 ORTHO HEIGHT -   188.7   (meters)      619.    (feet) GPS OBS
 JV7189  ______________________________________________________________________
 JV7189  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7189  GEOID HEIGHT    -        -32.750 (meters)                     GEOID93
 JV7189  GEOID HEIGHT    -        -32.419 (meters)                     GEOID18
 JV7189  NAD 83(2011) X  -  1,091,599.107 (meters)                     COMP
 JV7189  NAD 83(2011) Y  - -4,805,953.441 (meters)                     COMP
 JV7189  NAD 83(2011) Z  -  4,035,356.832 (meters)                     COMP
 JV7189  LAPLACE CORR    -          5.10  (seconds)                    DEFLEC18
 JV7189
 JV7189  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7189  Standards:
 JV7189         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7189            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7189  -------------------------------------------------------------------
 JV7189  NETWORK    2.19   2.39           0.90   0.88   1.22      0.18779986
 JV7189  -------------------------------------------------------------------
 JV7189  Click here for local accuracies and other accuracy information.
 JV7189
 JV7189.The horizontal coordinates were established by GPS observations
 JV7189.and adjusted by the National Geodetic Survey in June 2012.
 JV7189
 JV7189.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7189.been affixed to the stable North American tectonic plate. See 
 JV7189.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7189
 JV7189.The horizontal coordinates are valid at the epoch date displayed above
 JV7189.which is a decimal equivalence of Year/Month/Day.
 JV7189
 JV7189.The orthometric height was determined by GPS observations and a
 JV7189.high-resolution geoid model.
 JV7189
 JV7189.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7189.GEOID18 height accuracy estimate available here.
 JV7189
 JV7189.Click photographs - Photos may exist for this station.
 JV7189
 JV7189.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7189
 JV7189.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7189
 JV7189.The ellipsoidal height was determined by GPS observations
 JV7189.and is referenced to NAD 83.
 JV7189
 JV7189. The following values were computed from the NAD 83(2011) position.
 JV7189
 JV7189;                    North         East     Units Scale Factor Converg.
 JV7189;SPC MD       -   203,474.596   382,517.447   MT  1.00000903   -0 07 39.2
 JV7189;SPC MD       -   667,566.24  1,254,975.99   sFT  1.00000903   -0 07 39.2
 JV7189;UTM  18      - 4,374,522.232   310,556.217   MT  1.00004188   -1 24 06.6
 JV7189
 JV7189!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7189!SPC MD       -   0.99997547  x   1.00000903  =   0.99998450
 JV7189!UTM  18      -   0.99997547  x   1.00004188  =   1.00001735
 JV7189
 JV7189_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1055674522(NAD 83)
 JV7189
 JV7189                          SUPERSEDED SURVEY CONTROL
 JV7189
 JV7189  NAD 83(2007)-  39 29 58.06191(N)    077 12 11.70264(W) AD(2002.00) 0
 JV7189  ELLIP H (02/10/07)  156.353  (m)                       GP(2002.00)    
 JV7189  ELLIP H (08/30/02)  156.324  (m)                       GP(       ) 4 2
 JV7189  NAD 83(1991)-  39 29 58.06276(N)    077 12 11.70378(W) AD(       ) 1
 JV7189  ELLIP H (02/09/94)  156.275  (m)                       GP(       ) 4 1
 JV7189
 JV7189.Superseded values are not recommended for survey control.
 JV7189
 JV7189.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7189.See file dsdata.pdf to determine how the superseded data were derived.
 JV7189
 JV7189_MARKER: DD = SURVEY DISK
 JV7189_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7189_STAMPING: BESSIE 1993
 JV7189_MARK LOGO: MD-021
 JV7189_PROJECTION: FLUSH
 JV7189_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7189_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7189+STABILITY: SURFACE MOTION
 JV7189_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7189+SATELLITE: SATELLITE OBSERVATIONS - July 07, 2019
 JV7189
 JV7189  HISTORY     - Date     Condition        Report By
 JV7189  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7189  HISTORY     - 20160520 GOOD             BASE9
 JV7189  HISTORY     - 20190707 GOOD             NGS
 JV7189
 JV7189                          STATION DESCRIPTION
 JV7189
 JV7189'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7189'FROM THE INTERSECTION OF MD RTE 75 AND MD RTE 26 (LIBERTY ROAD) IN
 JV7189'LIBERTYTOWN MD, PROCEED EAST ON RTE 26 TO THE INTERSECTION WITH MD
 JV7189'RTE 31 (NEW WINDSOR ROAD). LEFT ON RTE 31 1.9 MILES (3.1 KM) TO
 JV7189'BESSIE CLEMSON ROAD. LEFT ON BESSIE CLEMSON 0.5 MILES (0.8 KM) TO
 JV7189'STATION ON THE LEFT. STATION IS 5 FEET (1.5 M) NORTHEST OF THE
 JV7189'NORTHEAST END OF A HEADWALL AND 10 FEET (3.0 M) OFF THE EDGE OF THE
 JV7189'ROAD. STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND
 JV7189'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7189
 JV7189                          STATION RECOVERY (2016)
 JV7189
 JV7189'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 JV7189'REFERENCE DISTANCES SHOWN IN 1993 DESCRIPTION ARE INCORRECT.  STATION
 JV7189'IS 4 FT (1.2 M) NORTH-NORTHWEST OF THE NORTHWEST SIDE OF THE HEADWALL,
 JV7189'6.7 FT (2.0 M) WEST-NORTHWEST FROM THE EDGE OF THE ROAD AND 0.8 FT (24
 JV7189'CM) EAST-NORTHEAST OF A CARSONITE WITNESS POST.  STATION HAS TREE
 JV7189'BLOCKAGES TO THE WEST-NORTHWEST THAT MAY INHIBIT GNSS OBSERVATIONS.
 JV7189
 JV7189                          STATION RECOVERY (2019)
 JV7189
 JV7189'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV7189'THERE IS SOME BLOCKAGE TO THE NORTH AND WEST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6045 ***********************************************************************
 DN6045  DESIGNATION -  BEST WESTERN
 DN6045  PID         -  DN6045
 DN6045  STATE/COUNTY-  MD/CARROLL
 DN6045  COUNTRY     -  US
 DN6045  USGS QUAD   -  NEW WINDSOR (2016)
 DN6045
 DN6045                         *CURRENT SURVEY CONTROL
 DN6045  ______________________________________________________________________
 DN6045* NAD 83(1986) POSITION- 39 35 11.70   (N) 077 00 39.48   (W)   HD_HELD1
 DN6045* NAVD 88 ORTHO HEIGHT -   226.949 (meters)      744.58  (feet) ADJUSTED
 DN6045  ______________________________________________________________________
 DN6045  GEOID HEIGHT    -        -32.304 (meters)                     GEOID18
 DN6045  DYNAMIC HEIGHT  -        226.831 (meters)      744.19  (feet) COMP
 DN6045  MODELED GRAVITY -    980,100.1   (mgal)                       NAVD 88
 DN6045
 DN6045  VERT ORDER      -  SECOND    CLASS II
 DN6045
 DN6045.The horizontal coordinates were determined by differentially corrected
 DN6045.hand held GPS observations or other comparable positioning techniques
 DN6045.and have an estimated accuracy of +/- 3 meters.
 DN6045
 DN6045.The orthometric height was determined by differential leveling and
 DN6045.adjusted by the NATIONAL GEODETIC SURVEY
 DN6045.in June 2012.
 DN6045
 DN6045.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6045.GEOID18 height accuracy estimate available here.
 DN6045
 DN6045.Click photographs - Photos may exist for this station.
 DN6045
 DN6045.The dynamic height is computed by dividing the NAVD 88
 DN6045.geopotential number by the normal gravity value computed on the
 DN6045.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6045.degrees latitude (g = 980.6199 gals.).
 DN6045
 DN6045.The modeled gravity was interpolated from observed gravity values.
 DN6045
 DN6045;                    North         East    Units  Estimated Accuracy
 DN6045;SPC MD       -   213,128.1     399,057.9     MT  (+/- 3 meters HH1 GPS) 
 DN6045
 DN6045_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2730783805(NAD 83)
 DN6045
 DN6045                          SUPERSEDED SURVEY CONTROL
 DN6045
 DN6045.No superseded survey control is available for this station.
 DN6045
 DN6045_MARKER: DD = SURVEY DISK
 DN6045_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6045_STAMPING: BEST WESTERN
 DN6045_MARK LOGO: MD-013
 DN6045_PROJECTION: FLUSH
 DN6045_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6045+STABILITY: SURFACE MOTION
 DN6045_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6045+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2018
 DN6045
 DN6045  HISTORY     - Date     Condition        Report By
 DN6045  HISTORY     - UNK      MONUMENTED       MD-013
 DN6045  HISTORY     - 20090407 GOOD             MDSHA
 DN6045  HISTORY     - 20140510 GOOD             RODCON
 DN6045  HISTORY     - 20181129 GOOD             GEOCAC
 DN6045
 DN6045                          STATION DESCRIPTION
 DN6045
 DN6045'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 DN6045'THE MARK IS LOCATED IN WESTMINSTER, CARROLL COUNTY MD.
 DN6045'
 DN6045'TO REACH THE MARK FROM THE INTERSECTION OF MD ROUTE 140 AND MD ROUTE
 DN6045'31 PROCEED NORTHWEST ON MD ROUTE 140 FOR 0.3 MI (0.5 KM) TO WMC DRIVE.
 DN6045'TURN LEFT AND PROCEED FOR 0.1 MI (0.2 KM) TO THE SECOND ENTRANCE TO
 DN6045'THE BEST WESTERN MOTEL AND THE MARK ON THE RIGHT.
 DN6045'
 DN6045'THE MARK IS 3.0 FT (0.9 M) NORTH-NORTHWEST OF A CARSONITE POST, 5.8 FT
 DN6045'(1.8 M) SOUTH-SOUTHEAST OF A CONCRETE CURB AND GUTTER, 18.6 FT (5.7 M)
 DN6045'SOUTH-SOUTHEAST OF THE CENTERLINE OF THE MOTEL ENTRANCE AND 143 FT
 DN6045'(43.6 M) EAST OF THE CENTER OF THE CONCRETE MEDIAN OF WMC DRIVE.
 DN6045
 DN6045                          STATION RECOVERY (2014)
 DN6045
 DN6045'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DN6045'RECOVERED IN GOOD CONDITION.
 DN6045
 DN6045                          STATION RECOVERY (2018)
 DN6045
 DN6045'RECOVERY NOTE BY GEOCACHING 2018 (NCP)
 DN6045'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6044 ***********************************************************************
 DN6044  DESIGNATION -  BEST WESTERN AZ MK
 DN6044  PID         -  DN6044
 DN6044  STATE/COUNTY-  MD/CARROLL
 DN6044  COUNTRY     -  US
 DN6044  USGS QUAD   -  NEW WINDSOR (2016)
 DN6044
 DN6044                         *CURRENT SURVEY CONTROL
 DN6044  ______________________________________________________________________
 DN6044* NAD 83(1986) POSITION- 39 35 06.19   (N) 077 00 31.09   (W)   HD_HELD1
 DN6044* NAVD 88 ORTHO HEIGHT -   208.798 (meters)      685.03  (feet) ADJUSTED
 DN6044  ______________________________________________________________________
 DN6044  GEOID HEIGHT    -        -32.294 (meters)                     GEOID18
 DN6044  DYNAMIC HEIGHT  -        208.690 (meters)      684.68  (feet) COMP
 DN6044  MODELED GRAVITY -    980,100.3   (mgal)                       NAVD 88
 DN6044
 DN6044  VERT ORDER      -  SECOND    CLASS II
 DN6044
 DN6044.The horizontal coordinates were determined by differentially corrected
 DN6044.hand held GPS observations or other comparable positioning techniques
 DN6044.and have an estimated accuracy of +/- 3 meters.
 DN6044
 DN6044.The orthometric height was determined by differential leveling and
 DN6044.adjusted by the NATIONAL GEODETIC SURVEY
 DN6044.in June 2012.
 DN6044
 DN6044.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6044.GEOID18 height accuracy estimate available here.
 DN6044
 DN6044.Click photographs - Photos may exist for this station.
 DN6044
 DN6044.The dynamic height is computed by dividing the NAVD 88
 DN6044.geopotential number by the normal gravity value computed on the
 DN6044.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6044.degrees latitude (g = 980.6199 gals.).
 DN6044
 DN6044.The modeled gravity was interpolated from observed gravity values.
 DN6044
 DN6044;                    North         East    Units  Estimated Accuracy
 DN6044;SPC MD       -   212,958.2     399,258.1     MT  (+/- 3 meters HH1 GPS) 
 DN6044
 DN6044_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2750383630(NAD 83)
 DN6044
 DN6044                          SUPERSEDED SURVEY CONTROL
 DN6044
 DN6044.No superseded survey control is available for this station.
 DN6044
 DN6044_MARKER: DB = BENCH MARK DISK
 DN6044_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6044_STAMPING: BEST WESTERN AZI
 DN6044_MARK LOGO: MD-013
 DN6044_PROJECTION: FLUSH
 DN6044_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6044+STABILITY: SURFACE MOTION
 DN6044_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6044+SATELLITE: SATELLITE OBSERVATIONS - May 10, 2014
 DN6044
 DN6044  HISTORY     - Date     Condition        Report By
 DN6044  HISTORY     - UNK      MONUMENTED       MD-013
 DN6044  HISTORY     - 20090407 GOOD             MDSHA
 DN6044  HISTORY     - 20140510 GOOD             RODCON
 DN6044
 DN6044                          STATION DESCRIPTION
 DN6044
 DN6044'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 DN6044'THE MARK IS LOCATED IN THE TOWN OF WESTMINSTER, CARROLL COUNTY
 DN6044'MARYLAND.
 DN6044'
 DN6044'TO REACH THE MARK FROM THE INTERSECTION OF MD ROUTE 140 AND MD ROUTE
 DN6044'31 GO SOUTHWEST ON MD ROUTE 31 FOR 0.3 MI (0.5 KM) TO THE MARKER ON
 DN6044'THE RIGHT AND IN THE NORTH QUADRANT OF WMC DRIVE.
 DN6044'
 DN6044'IT IS 5.8 FT (1.8 M) WEST OF A CARSONITE POST SET AT A GUARD RAIL, 95
 DN6044'FT (29.0 M) EAST OF A METAL FENCE SURROUNDING A STORM WATER POND AND
 DN6044'194.2 FT (59.2 M) NORTHEAST OF A TRAFFIC POLE.
 DN6044
 DN6044                          STATION RECOVERY (2014)
 DN6044
 DN6044'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DN6044'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6042 ***********************************************************************
 JV6042  DESIGNATION -  BETHANY
 JV6042  PID         -  JV6042
 JV6042  STATE/COUNTY-  MD/HOWARD
 JV6042  COUNTRY     -  US
 JV6042  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6042
 JV6042                         *CURRENT SURVEY CONTROL
 JV6042  ______________________________________________________________________
 JV6042* NAD 83(1991) POSITION- 39 17 51.41532(N) 076 51 19.91155(W)   ADJUSTED
 JV6042* NAVD 88 ORTHO HEIGHT -   149.    (meters)      489.    (feet) SCALED
 JV6042  ______________________________________________________________________
 JV6042  GEOID HEIGHT    -        -32.119 (meters)                     GEOID18
 JV6042  LAPLACE CORR    -         -3.14  (seconds)                    DEFLEC18
 JV6042  HORZ ORDER      -  SECOND
 JV6042
 JV6042.The horizontal coordinates were established by classical geodetic methods
 JV6042.and adjusted by the National Geodetic Survey in January 1992.
 JV6042
 JV6042.The orthometric height was scaled from a topographic map.
 JV6042
 JV6042.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6042.GEOID18 height accuracy estimate available here.
 JV6042
 JV6042.Click photographs - Photos may exist for this station.
 JV6042
 JV6042.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6042
 JV6042. The following values were computed from the NAD 83(1991) position.
 JV6042
 JV6042;                    North         East     Units Scale Factor Converg.
 JV6042;SPC MD       -   181,055.582   412,461.941   MT  0.99997689   +0 05 26.4
 JV6042;SPC MD       -   594,013.19  1,353,218.88   sFT  0.99997689   +0 05 26.4
 JV6042;UTM  18      - 4,351,445.370   339,996.002   MT  0.99991523   -1 10 31.6
 JV6042
 JV6042!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6042!SPC MD       -   0.99998170  x   0.99997689  =   0.99995859
 JV6042!UTM  18      -   0.99998170  x   0.99991523  =   0.99989693
 JV6042
 JV6042_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3999651445(NAD 83)
 JV6042
 JV6042                          SUPERSEDED SURVEY CONTROL
 JV6042
 JV6042  NAD 83(1986)-  39 17 51.41323(N)    076 51 19.92005(W) AD(       ) 2
 JV6042  NAD 27      -  39 17 51.03277(N)    076 51 21.00654(W) AD(       ) 2
 JV6042
 JV6042.Superseded values are not recommended for survey control.
 JV6042
 JV6042.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6042.See file dsdata.pdf to determine how the superseded data were derived.
 JV6042
 JV6042_MARKER: DD = SURVEY DISK
 JV6042_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6042_STAMPING: BETHANY 1955
 JV6042_MARK LOGO: MDBCSM
 JV6042_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6042+STABILITY: SURFACE MOTION
 JV6042
 JV6042  HISTORY     - Date     Condition        Report By
 JV6042  HISTORY     - 1955     MONUMENTED       CGS
 JV6042  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV6042
 JV6042                          STATION DESCRIPTION
 JV6042
 JV6042'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (JCE)
 JV6042'STATION IS LOCATED 200 FEET SOUTH OF THE INTERSECTION OF STATE
 JV6042'HIGHWAY NO. 99 AND BETHANY LANE WHICH IS ABOUT 8.0 MILES SOUTHEAST
 JV6042'OF SYKESVILLE AND ABOUT 4.0 MILES NORTHWEST OF ELLICOTT
 JV6042'CITY.  STATION IS 14 FEET WEST OF THE APPROXIMATE CENTERLINE OF
 JV6042'BETHANY LANE, 73 FEET WEST OF UTILITY POLE AND 34 FEET EAST OF AN
 JV6042'8 INCH TREE.  THE MARK IS A MARYLAND BUREAU OF CONTROLL SURVEY
 JV6042'MARK SET IN A 8 INCH CONCRETE CYLINDER POST, PROJECTS ABOUT 4
 JV6042'INCHES AND THE DISK IS STAMPED BETHANY 1955.
 JV6042'
 JV6042'A TRAVERSE CONNECTION WAS MADE FROM LEATHER AZIMUTH MARK TO BETHANY
 JV6042'(MBCS) AND THE DISTANCE IS 15.409 METERS OR 50.55 FEET.
 JV6042'
 JV6042'TO REACH FROM THE JUNCTION OF U.S. HIGHWAYS NO. 40 AND 29 WHICH
 JV6042'IS ABOUT 1.0 MILE NORTHWEST OF ELLICOTT CITY, GO WESTERLY ON
 JV6042'U.S. HIGHWAY NO. 40 FOR 0.4 MILE TO CROSSROADS.  TURN RIGHT
 JV6042'AND GO NORTHERLY ON ST. JOHNS ROAD FOR 2.0 MILES TO JUNCTION
 JV6042'OF STATE HIGHWAY NO. 99.  TURN LEFT AND GO WESTERLY ON STATE
 JV6042'HIGHWAY NO. 99 FOR 0.5 MILE TO INTERSECTION AT BETHANY LANE
 JV6042'AND STATION AS DESCRIBED.
 JV6042
 JV6042                          STATION RECOVERY (1975)
 JV6042
 JV6042'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV6042'A SEARCH WAS MADE FOR THE STATION AND NO EVIDENCE OF IT WAS
 JV6042'FOUND.  IT IS BELIEVED THAT IT WAS COVERED WITH SEVERAL FEET
 JV6042'OF FILL OR ELSE DESTROYED DURING THE CONSTRUCTION ALONG THE
 JV6042'PAVED ROAD NEAR THE STATION.  THIS IS THE AZIMUTH MARK FOR
 JV6042'TRAVERSE STATION LEATHER 1958.
 JV6042'
 JV6042'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV6042'4 MILES NORTHWEST OF ELLICOTT CITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5747 ***********************************************************************
 HV5747  DESIGNATION -  BETHEL
 HV5747  PID         -  HV5747
 HV5747  STATE/COUNTY-  MD/TALBOT
 HV5747  COUNTRY     -  US
 HV5747  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5747
 HV5747                         *CURRENT SURVEY CONTROL
 HV5747  ______________________________________________________________________
 HV5747* NAD 83(1991) POSITION- 38 47 14.74259(N) 076 08 10.07799(W)   ADJUSTED
 HV5747* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5747  ______________________________________________________________________
 HV5747  GEOID HEIGHT    -        -34.528 (meters)                     GEOID18
 HV5747  LAPLACE CORR    -         -3.96  (seconds)                    DEFLEC18
 HV5747  HORZ ORDER      -  THIRD
 HV5747
 HV5747.The horizontal coordinates were established by classical geodetic methods
 HV5747.and adjusted by the National Geodetic Survey in January 1992.
 HV5747
 HV5747.The orthometric height was scaled from a topographic map.
 HV5747
 HV5747.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5747.GEOID18 height accuracy estimate available here.
 HV5747
 HV5747.Click photographs - Photos may exist for this station.
 HV5747
 HV5747.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5747
 HV5747. The following values were computed from the NAD 83(1991) position.
 HV5747
 HV5747;                    North         East     Units Scale Factor Converg.
 HV5747;SPC MD       -   124,764.195   475,052.314   MT  0.99995103   +0 32 31.9
 HV5747;SPC MD       -   409,330.53  1,558,567.47   sFT  0.99995103   +0 32 31.9
 HV5747;UTM  18      - 4,293,800.625   401,325.175   MT  0.99971990   -0 42 42.4
 HV5747
 HV5747!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5747!SPC MD       -   1.00000545  x   0.99995103  =   0.99995648
 HV5747!UTM  18      -   1.00000545  x   0.99971990  =   0.99972535
 HV5747
 HV5747:                Primary Azimuth Mark                     Grid Az
 HV5747:SPC MD       -  FIG                                      218 07 56.0
 HV5747:UTM  18      -  FIG                                      219 23 10.3
 HV5747
 HV5747_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0132593800(NAD 83)
 HV5747
 HV5747|---------------------------------------------------------------------|
 HV5747| PID    Reference Object                     Distance      Geod. Az  |
 HV5747|                                                           dddmmss.s |
 HV5747| HV5748 FIG                                 APPROX. 0.6 KM 2184027.9 |
 HV5747| HV5670 JOHNSON                             APPROX. 0.5 KM 3070921.6 |
 HV5747|---------------------------------------------------------------------|
 HV5747
 HV5747                          SUPERSEDED SURVEY CONTROL
 HV5747
 HV5747  NAD 83(1986)-  38 47 14.73815(N)    076 08 10.09210(W) AD(       ) 3
 HV5747  NAD 27      -  38 47 14.26000(N)    076 08 11.29200(W) AD(       ) 3
 HV5747  USSD        -  38 47 14.64200(N)    076 08 11.05500(W) AD(       ) 3
 HV5747
 HV5747.Superseded values are not recommended for survey control.
 HV5747
 HV5747.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5747.See file dsdata.pdf to determine how the superseded data were derived.
 HV5747
 HV5747_MARKER: H = DRILL HOLE
 HV5747_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5747_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5747
 HV5747  HISTORY     - Date     Condition        Report By
 HV5747  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5747  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5747
 HV5747                          STATION DESCRIPTION
 HV5747
 HV5747'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5747'STATION IS ON THE SOUTHEASTERN SHORE OF MILES RIVER, AT NE SIDE OF
 HV5747'ENTRANCE TO SMALL CREEK, ABOUT 3/4 MILE SW OF MILES RIVER BRIDGE,
 HV5747'IN A CLUMP OF PINE TREES, ABOUT 3 FEET ABOVE HIGH WATER, 9 YARDS
 HV5747'S OF SHORE ON ROUNDED POINT, AND 20 YARDS E OF SHORE.  STATION
 HV5747'MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5747'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5747'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV5747'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUBSURFACE MARK IS
 HV5747'CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW
 HV5747'THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV5747'POINTS OF REFERENCE ARE AS FOLLOWS--NEAR PEAK OF DORRANCES HOUSE,
 HV5747'3/4 MILE, S 74 DEG 43 MIN W. NAIL IN BLAZE IN 14-INCH CEDAR TREE,
 HV5747'5.76 METERS (18.90 FEET), N 84 DEG 41 MIN W.  LEFT CORNER OF
 HV5747'SECOND-STORY OF LOWNDESS HOUSE, 3/8 MILE, N 53 DEG 53 MIN W. NAIL
 HV5747'IN BLAZE IN 6-INCH PERSIMMON TREE, 4.91 METERS (16.11 FEET), N 15
 HV5747'DEG 25 MIN W.  CENTER OF WINDMILL ON TOWER, 1/2 MILE, N 32 DEG 14
 HV5747'MIN E. LEFT CORNER OF GOLDSBOROUGHS HOUSE, 1 MILE, N 33 DEG 20
 HV5747'MIN E. NAIL IN BLAZE IN 10-INCH LOCUST TREE, 4.74 METERS (15.55
 HV5747'FEET), N 56 DEG 7 MIN E.  CENTER OF WINDMILL ON TOWER, 5/8 MILE,
 HV5747'N 64 DEG 20 MIN E.  LEFT CORNER OF LARGE CHIMNEY, 1/2 MILE, S 53
 HV5747'DEG 29 MIN E.
 HV5747
 HV5747                          STATION RECOVERY (1940)
 HV5747
 HV5747'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5747'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  REFERENCE TREES
 HV5747'DESCRIBED IN ORIGINAL DESCRIPTION ARE DESTROYED.
 HV5747'
 HV5747'POSITION OF MARK AS OBTAINED BY SEXTANT ANGLES PLACES STATION ON
 HV5747'PRIVATE LAWN.  MAY HAVE BEEN DUG OUT OR COVERED OVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3857 ***********************************************************************
 JU3857  HT_MOD      -  This is a Height Modernization Survey Station.
 JU3857  DESIGNATION -  BETHEL
 JU3857  PID         -  JU3857
 JU3857  STATE/COUNTY-  MD/CECIL
 JU3857  COUNTRY     -  US
 JU3857  USGS QUAD   -  ELKTON (2016)
 JU3857
 JU3857                         *CURRENT SURVEY CONTROL
 JU3857  ______________________________________________________________________
 JU3857* NAD 83(2011) POSITION- 39 31 58.63151(N) 075 46 50.19899(W)   ADJUSTED
 JU3857* NAD 83(2011) ELLIP HT-   -19.964 (meters)        (06/27/12)   ADJUSTED
 JU3857* NAD 83(2011) EPOCH   -  2010.00
 JU3857* NAVD 88 ORTHO HEIGHT -    13.35  (meters)       43.8   (feet) GPS OBS
 JU3857  ______________________________________________________________________
 JU3857  NAVD 88 orthometric height was determined with geoid model    GEOID03
 JU3857  GEOID HEIGHT    -        -33.284 (meters)                     GEOID03
 JU3857  GEOID HEIGHT    -        -33.311 (meters)                     GEOID18
 JU3857  NAD 83(2011) X  -  1,209,966.388 (meters)                     COMP
 JU3857  NAD 83(2011) Y  - -4,774,945.312 (meters)                     COMP
 JU3857  NAD 83(2011) Z  -  4,038,113.239 (meters)                     COMP
 JU3857  LAPLACE CORR    -         -0.07  (seconds)                    DEFLEC18
 JU3857
 JU3857  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU3857  Standards:
 JU3857         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU3857            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU3857  -------------------------------------------------------------------
 JU3857  NETWORK    0.40   1.02           0.17   0.16   0.52      0.07187519
 JU3857  -------------------------------------------------------------------
 JU3857  Click here for local accuracies and other accuracy information.
 JU3857
 JU3857.The horizontal coordinates were established by GPS observations
 JU3857.and adjusted by the National Geodetic Survey in June 2012.
 JU3857
 JU3857.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU3857.been affixed to the stable North American tectonic plate. See 
 JU3857.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU3857
 JU3857.The horizontal coordinates are valid at the epoch date displayed above
 JU3857.which is a decimal equivalence of Year/Month/Day.
 JU3857
 JU3857.The orthometric height was determined by GPS observations and a
 JU3857.high-resolution geoid model using precise GPS observation and
 JU3857.processing techniques.
 JU3857
 JU3857.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3857.GEOID18 height accuracy estimate available here.
 JU3857
 JU3857.Click photographs - Photos may exist for this station.
 JU3857
 JU3857.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU3857
 JU3857.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3857
 JU3857.The ellipsoidal height was determined by GPS observations
 JU3857.and is referenced to NAD 83.
 JU3857
 JU3857. The following values were computed from the NAD 83(2011) position.
 JU3857
 JU3857;                    North         East     Units Scale Factor Converg.
 JU3857;SPC MD       -   207,873.760   504,832.801   MT  1.00001556   +0 45 55.2
 JU3857;SPC MD       -   681,999.16  1,656,272.28   sFT  1.00001556   +0 45 55.2
 JU3857;UTM  18      - 4,376,212.579   432,915.157   MT  0.99965541   -0 29 48.8
 JU3857
 JU3857!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3857!SPC MD       -   1.00000313  x   1.00001556  =   1.00001869
 JU3857!UTM  18      -   1.00000313  x   0.99965541  =   0.99965854
 JU3857
 JU3857:                Primary Azimuth Mark                     Grid Az
 JU3857:SPC MD       -  BETHEL RM 1 AZIMUTH                      003 19 55.2
 JU3857:UTM  18      -  BETHEL RM 1 AZIMUTH                      004 35 39.2
 JU3857
 JU3857_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3291576212(NAD 83)
 JU3857
 JU3857|---------------------------------------------------------------------|
 JU3857| PID    Reference Object                     Distance      Geod. Az  |
 JU3857|                                                           dddmmss.s |
 JU3857| CB1267 BETHEL RM 1 AZIMUTH                                0040550.4 |
 JU3857| CB1265 BETHEL RM 2                         133.210 METERS 06530     |
 JU3857| JU3902 BETHEL RM 3                         128.104 METERS 08703     |
 JU3857| JU3439 MIDDLETOWN STANDPIPE                APPROX.10.5 KM 1480053.9 |
 JU3857| JU3438 TOWNSEND WATER TANK                 APPROX.17.3 KM 1533748.6 |
 JU3857| JU3871 ELKTON BRICK STACK                  APPROX. 9.1 KM 3292556.2 |
 JU3857|---------------------------------------------------------------------|
 JU3857
 JU3857                          SUPERSEDED SURVEY CONTROL
 JU3857
 JU3857  NAD 83(2007)-  39 31 58.63159(N)    075 46 50.19953(W) AD(2002.00) 1
 JU3857  ELLIP H (02/23/12)  -19.918  (m)                       GP(2002.00) 4 1
 JU3857  NAD 83(1991)-  39 31 58.62956(N)    075 46 50.20185(W) AD(       ) 2
 JU3857  NAD 83(1986)-  39 31 58.62266(N)    075 46 50.20910(W) AD(       ) 2
 JU3857  NAD 27      -  39 31 58.22800(N)    075 46 51.44800(W) AD(       ) 2
 JU3857  NGVD 29              14.60   (m)           47.9    (f) LEVELING    3  
 JU3857
 JU3857.Superseded values are not recommended for survey control.
 JU3857
 JU3857.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3857.See file dsdata.pdf to determine how the superseded data were derived.
 JU3857
 JU3857_MARKER: DS = TRIANGULATION STATION DISK
 JU3857_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3857_STAMPING: BETHEL USC OF E 45 37 NO47-34 1934
 JU3857_MARK LOGO: CGS
 JU3857_PROJECTION: FLUSH
 JU3857_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3857+STABILITY: SURFACE MOTION
 JU3857_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3857+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2009
 JU3857
 JU3857  HISTORY     - Date     Condition        Report By
 JU3857  HISTORY     - 1934     MONUMENTED       CGS
 JU3857  HISTORY     - 1943     GOOD             CGS
 JU3857  HISTORY     - 1946     GOOD             CGS
 JU3857  HISTORY     - 1961     GOOD             CGS
 JU3857  HISTORY     - 20090309 GOOD             GWS
 JU3857
 JU3857                          STATION DESCRIPTION
 JU3857
 JU3857'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 JU3857'THIS IS A U.S. CORPS OF ENGINEERS TRIANGULATION STATION
 JU3857'NO.47 - 34.  IT IS ABOUT 1.6 MILES AIRLINE E OF CHESAPEAKE CITY,
 JU3857'ALONG THE S FENCE OF THE BETHEL CEMETERY.  THE STATION WAS
 JU3857'ORIGINALLY A CAPPED GAS PIPE, FLUSH WITH THE GROUND, BUT WAS
 JU3857'REPLACED WITH STANDARD BRONZE DISKS SET IN CONCRETE AS DESCRIBED
 JU3857'IN NOTES 1A, AND 7A.  THE STATION IS ALONG THE S FENCE OF THE
 JU3857'CEMETERY, ABOUT 200 YARDS E OF A N-S ROAD PASSING W OF THE
 JU3857'CEMETERY, ABOUT 200 YARDS S OF THE CHESAPEAKE-DELAWARE CANAL.
 JU3857'IT IS 18.65 METERS S OF THE S EDGE OF A TOMBSTONE WITH QUECK ON
 JU3857'THE W AND MOODY ON THE E SIDE, 32.55 METERS SSE OF THE SE
 JU3857'CORNER OF THE FOUNDATION OF KERSHAW TOMBSTONE, 1 FOOT N OF THE S
 JU3857'FENCE.
 JU3857'
 JU3857'REFERENCE AND AZIMUTH MARKS ARE STANDARD BRONZE DISKS SET IN
 JU3857'CONCRETE AS DESCRIBED IN NOTE 11A.
 JU3857'
 JU3857'NO REFERENCE MARK NO.3 WAS SET.
 JU3857'
 JU3857'REFERENCE MARK NO. 1, AZIMUTH MARK, IS APPROXIMATELY 0.4 MILE
 JU3857'E OF THE STATION, ON THE S SIDE OF THE HIGHWAY TO MIDDLETOWN, AND
 JU3857'WILMINGTON, ABOUT 0.3 MILE E OF THE CHESAPEAKE-DELAWARE CANAL.  IT
 JU3857'IS 6.4 METERS S OF THE CENTER LINE OF THE HIGHWAY, 6.40 METERS W
 JU3857'OF MARYLAND-DELAWARE STATE LINE SIGN, 150 YARDS E OF AN OLD
 JU3857'2-STORY BRICK HOUSE ON THE N SIDE OF THE HIGHWAY.  TO REACH
 JU3857'REFERENCE MARK NO.1 FROM THE BRIDGE OVER THE CANAL IN
 JU3857'CHESAPEAKE CITY, TURN E ON THE FIRST PAVED ROAD N OF THE BRIDGE
 JU3857'AT SIGN MIDDLETOWN 12, WILMINGTON 22.  FROM HERE GO 1.8
 JU3857'MILES TO THE MARK.  THE MARK IS STAMPED BETHEL, U.S.C.E.
 JU3857'NO.47 - 34, NO.1, 1934.
 JU3857'
 JU3857'REFERENCE MARK NO.2 IS ENE OF THE STATION, 1 FOOT W OF THE E
 JU3857'CEMETERY FENCE, 76 FEET S OF THE SE CORNER OF THE CEMETERY, 4.5
 JU3857'FEET SE OF OLD STATE LINE MARKER, 87.15 FEET SE OF THE SE CORNER
 JU3857'OF MC DANIEL TOMBSTONE FOUNDATION.
 JU3857'
 JU3857'TO REACH THE STATION FROM CHESAPEAKE CITY, ONE BLOCK S OF THE
 JU3857'CANAL BRIDGE GO E ON PAVED ROAD FOR 0.5 MILE TO A T.  TURN RIGHT
 JU3857'AT T AND GO 1.4 MILES TO CROSSROADS.  TURN LEFT (N) WITH PAVEMENT
 JU3857'AND GO 0.8 MILE TO BETHEL CEMETERY GATE.  ENTER GATE, TURN RIGHT
 JU3857'AND CONTINUE TO AND ALONG THE S CEMETERY ROAD, FOLLOW THIS ROAD
 JU3857'0.15 MILE TO QUECK TOMBSTONE AND STATION.
 JU3857'
 JU3857'A 113-FOOT TOWER NECESSARY.  THIS IS A SECOND-ORDER STATION.
 JU3857
 JU3857                          STATION RECOVERY (1943)
 JU3857
 JU3857'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 JU3857'RECOVERED AS DESCRIBED EXCEPT FOR THE FOLLOWING DISCREPANCIES--
 JU3857'
 JU3857'1.  SUBSTITUTE MOODY FOR MOODYOE.
 JU3857'
 JU3857'2.  R.M. 1 IS NNE OF STATION, NOT E OF IT.
 JU3857
 JU3857                          STATION RECOVERY (1946)
 JU3857
 JU3857'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1946 (ELJ)
 JU3857'STATION RECOVERED IN GOOD CONDITION.
 JU3857'
 JU3857'STATION MARK, REFERENCE MARKS 2 AND 3 RECOVERED IN GOOD
 JU3857'CONDITION.
 JU3857'
 JU3857'DISTANCES TO REFERENCE MARKS WERE MEASURED AND FOUND TO BE
 JU3857'CORRECT.
 JU3857'
 JU3857'THE 1934 DESCRIPTION IS ADEQUATE EXCEPT FOR THE FOLLOWING
 JU3857'CHANGES--
 JU3857'
 JU3857'1.  QUEK TO QUECK.
 JU3857'
 JU3857'2.  MOODYDE TO MOODY.
 JU3857'
 JU3857'3.  76 FEET S OF THE SE CORNER OF CEMETERY TO 76 FEET N OF.....
 JU3857'
 JU3857'4.  DELETE REFERENCE MARK 1, THE AZIMUTH MARK.  THIS WAS LOST
 JU3857'DUE TO ROAD CONSTRUCTION.
 JU3857'
 JU3857'5.  ADD STATION STAMPED BETHEL U S C OF E 45 - 37 NO 47 - 34 1934.
 JU3857
 JU3857                          STATION RECOVERY (1961)
 JU3857
 JU3857'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3857'THE STATION MARK, REFERENCE MARK 2 AND THE KERN TOMBSTONE WERE
 JU3857'RECOVERED AS DESCRIBED AND FOUND TO BE IN GOOD
 JU3857'CONDITION.  REFERENCE MARK 1 WAS SEARCHED FOR BUT NOT
 JU3857'RECOVERED.  THE CEMETERY HAS BEEN MADE LARGER IN WHICH THE
 JU3857'STATION MARK IS LOCATED AND MADE IT IMPOSSIBLE TO ERECT AN
 JU3857'OBSERVATION TOWER OVER THE STATION MARK.  REFERENCE MARK 3 WAS
 JU3857'ESTABLISHED AND OBSERVED ANGLES WERE TAKEN FROM IT.
 JU3857'
 JU3857'THE DESCRIPTION WERE ADEQUATE.
 JU3857
 JU3857                          STATION RECOVERY (2009)
 JU3857
 JU3857'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (JMS)
 JU3857'STATION STATION BELIEVED TO BE RESET BY UNKNOWN PERSONS BASED ON NEW
 JU3857'OBSERVATION RESULTS.
 JU3857'
 JU3857'STATION STATION NOW LOCATED IMMEDIATELY TO THE REAR OF AND BETWEEN TWO
 JU3857'HEADSTONES.  CLOSEST HEADSTONE BEARS THE NAME 'JAMES ERNEST WALKER,
 JU3857'JR.' SECOND HEADSTONE IS MARKED 'MARIAN DEAN WALKER.' NEW LOCATION
 JU3857'TIES RECOMMENDED FOR A FUTURE VISIT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7190 ***********************************************************************
 JV7190  DESIGNATION -  BETHEL
 JV7190  PID         -  JV7190
 JV7190  STATE/COUNTY-  MD/FREDERICK
 JV7190  COUNTRY     -  US
 JV7190  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV7190
 JV7190                         *CURRENT SURVEY CONTROL
 JV7190  ______________________________________________________________________
 JV7190* NAD 83(2011) POSITION- 39 30 02.91267(N) 077 26 28.51734(W)   ADJUSTED
 JV7190* NAD 83(2011) ELLIP HT-    92.542 (meters)        (06/27/12)   ADJUSTED
 JV7190* NAD 83(2011) EPOCH   -  2010.00
 JV7190* NAVD 88 ORTHO HEIGHT -   125.5   (meters)      412.    (feet) GPS OBS
 JV7190  ______________________________________________________________________
 JV7190  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7190  GEOID HEIGHT    -        -33.250 (meters)                     GEOID93
 JV7190  GEOID HEIGHT    -        -32.925 (meters)                     GEOID18
 JV7190  NAD 83(2011) X  -  1,071,594.623 (meters)                     COMP
 JV7190  NAD 83(2011) Y  - -4,810,305.492 (meters)                     COMP
 JV7190  NAD 83(2011) Z  -  4,035,431.697 (meters)                     COMP
 JV7190  LAPLACE CORR    -          0.45  (seconds)                    DEFLEC18
 JV7190
 JV7190  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7190  Standards:
 JV7190         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7190            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7190  -------------------------------------------------------------------
 JV7190  NETWORK    1.49   1.78           0.63   0.59   0.91      0.00217082
 JV7190  -------------------------------------------------------------------
 JV7190  Click here for local accuracies and other accuracy information.
 JV7190
 JV7190.The horizontal coordinates were established by GPS observations
 JV7190.and adjusted by the National Geodetic Survey in June 2012.
 JV7190
 JV7190.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7190.been affixed to the stable North American tectonic plate. See 
 JV7190.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7190
 JV7190.The horizontal coordinates are valid at the epoch date displayed above
 JV7190.which is a decimal equivalence of Year/Month/Day.
 JV7190
 JV7190.The orthometric height was determined by GPS observations and a
 JV7190.high-resolution geoid model.
 JV7190
 JV7190.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7190.GEOID18 height accuracy estimate available here.
 JV7190
 JV7190.Click photographs - Photos may exist for this station.
 JV7190
 JV7190.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7190
 JV7190.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7190
 JV7190.The ellipsoidal height was determined by GPS observations
 JV7190.and is referenced to NAD 83.
 JV7190
 JV7190. The following values were computed from the NAD 83(2011) position.
 JV7190
 JV7190;                    North         East     Units Scale Factor Converg.
 JV7190;SPC MD       -   203,696.466   362,046.400   MT  1.00000928   -0 16 37.0
 JV7190;SPC MD       -   668,294.16  1,187,813.90   sFT  1.00000928   -0 16 37.0
 JV7190;UTM  18      - 4,375,199.739   290,093.498   MT  1.00014251   -1 33 12.3
 JV7190
 JV7190!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7190!SPC MD       -   0.99998548  x   1.00000928  =   0.99999476
 JV7190!UTM  18      -   0.99998548  x   1.00014251  =   1.00012799
 JV7190
 JV7190_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9009375199(NAD 83)
 JV7190
 JV7190                          SUPERSEDED SURVEY CONTROL
 JV7190
 JV7190  NAD 83(2007)-  39 30 02.91290(N)    077 26 28.51802(W) AD(2002.00) 0
 JV7190  ELLIP H (02/10/07)   92.564  (m)                       GP(2002.00)    
 JV7190  ELLIP H (08/30/02)   92.557  (m)                       GP(       ) 4 2
 JV7190  NAD 83(1991)-  39 30 02.91344(N)    077 26 28.51867(W) AD(       ) 1
 JV7190  ELLIP H (02/09/94)   92.496  (m)                       GP(       ) 4 1
 JV7190
 JV7190.Superseded values are not recommended for survey control.
 JV7190
 JV7190.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7190.See file dsdata.pdf to determine how the superseded data were derived.
 JV7190
 JV7190_MARKER: DD = SURVEY DISK
 JV7190_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7190_STAMPING: BETHEL 1993
 JV7190_MARK LOGO: MD-021
 JV7190_PROJECTION: RECESSED 16 CENTIMETERS
 JV7190_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7190_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7190+STABILITY: SURFACE MOTION
 JV7190_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7190+SATELLITE: SATELLITE OBSERVATIONS - May 27, 2021
 JV7190
 JV7190  HISTORY     - Date     Condition        Report By
 JV7190  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7190  HISTORY     - 20210527 GOOD             BASE9
 JV7190
 JV7190                          STATION DESCRIPTION
 JV7190
 JV7190'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7190'FROM FREDERICK, MD, PROCEED NORTHWESTERLY ALONG YELLOW SPRINGS ROAD TO
 JV7190'THE VILLAGE OF YELLOW SPRINGS. FROM THE INTERSECTION OF YELLOW
 JV7190'SPRINGS ROAD AND BETHEL ROAD IN YELLOW SPRINGS, PROCEED NORTHEASTERLY
 JV7190'ALONG BETHEL ROAD 2.0 MILES (3.2 KM) TO THE INTERSECTION OF BETHEL
 JV7190'ROAD, PUTNAM ROAD, AND OPPOSSUMTOWN PIKE. STATION IS EAST OF THE
 JV7190'INTERSECTION, NEAR A GRAVEL PARKING LOT, 22 FEET (6.7 M) SOUTHEAST OF
 JV7190'THE CENTERLINE OF BETHEL ROAD AND 36 FEET (11.0 M) NORTHEAST OF THE
 JV7190'CENTERLINE OF OPOSSUMTOWN PIKE. STATION IS A BRASS DISK SET IN THE
 JV7190'TOP OF AN 8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7190
 JV7190                          STATION RECOVERY (2021)
 JV7190
 JV7190'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2021 (RSD)
 JV7190'THE MARK IS LOCATED IN THE GRASSY STRIP BETWEEN BETHEL ROAD AND THE
 JV7190'BETHEL LUTHERAN CHURCH PARKING LOT.
 JV7190'
 JV7190'THE STATION IS 3.53 M (11.6 FT) SOUTHEAST FROM THE EDGE OF BETHEL ROAD
 JV7190'PAVEMENT, 6.47 M (21.2 FT) NORTH FROM A STOP SIGN POST AND 3.94 M
 JV7190'(12.9 FT) NORTHWEST FROM THE EDGE OF A PARKING LOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4629 ***********************************************************************
 AB4629  DESIGNATION -  BETHEL
 AB4629  PID         -  AB4629
 AB4629  STATE/COUNTY-  MD/CARROLL
 AB4629  COUNTRY     -  US
 AB4629  USGS QUAD   -  WESTMINSTER (2016)
 AB4629
 AB4629                         *CURRENT SURVEY CONTROL
 AB4629  ______________________________________________________________________
 AB4629* NAD 83(2011) POSITION- 39 32 21.25466(N) 076 55 51.50241(W)   ADJUSTED
 AB4629* NAD 83(2011) ELLIP HT-   215.447 (meters)        (06/27/12)   ADJUSTED
 AB4629* NAD 83(2011) EPOCH   -  2010.00
 AB4629* NAVD 88 ORTHO HEIGHT -   247.6   (meters)      812.    (feet) GPS OBS
 AB4629  ______________________________________________________________________
 AB4629  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4629  GEOID HEIGHT    -        -32.113 (meters)                     GEOID99
 AB4629  GEOID HEIGHT    -        -32.098 (meters)                     GEOID18
 AB4629  NAD 83(2011) X  -  1,113,800.115 (meters)                     COMP
 AB4629  NAD 83(2011) Y  - -4,798,018.738 (meters)                     COMP
 AB4629  NAD 83(2011) Z  -  4,038,801.192 (meters)                     COMP
 AB4629  LAPLACE CORR    -          0.52  (seconds)                    DEFLEC18
 AB4629
 AB4629  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4629  Standards:
 AB4629         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4629            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4629  -------------------------------------------------------------------
 AB4629  NETWORK    1.36   5.41           0.57   0.54   2.76     -0.08031832
 AB4629  -------------------------------------------------------------------
 AB4629  Click here for local accuracies and other accuracy information.
 AB4629
 AB4629.The horizontal coordinates were established by GPS observations
 AB4629.and adjusted by the National Geodetic Survey in June 2012.
 AB4629
 AB4629.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4629.been affixed to the stable North American tectonic plate. See 
 AB4629.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4629
 AB4629.The horizontal coordinates are valid at the epoch date displayed above
 AB4629.which is a decimal equivalence of Year/Month/Day.
 AB4629
 AB4629.The orthometric height was determined by GPS observations and a
 AB4629.high-resolution geoid model.
 AB4629
 AB4629.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4629.GEOID18 height accuracy estimate available here.
 AB4629
 AB4629.Click photographs - Photos may exist for this station.
 AB4629
 AB4629.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4629
 AB4629.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4629
 AB4629.The ellipsoidal height was determined by GPS observations
 AB4629.and is referenced to NAD 83.
 AB4629
 AB4629. The following values were computed from the NAD 83(2011) position.
 AB4629
 AB4629;                    North         East     Units Scale Factor Converg.
 AB4629;SPC MD       -   207,873.560   405,934.017   MT  1.00001683   +0 02 36.0
 AB4629;SPC MD       -   681,998.50  1,331,801.85   sFT  1.00001683   +0 02 36.0
 AB4629;UTM  18      - 4,378,399.546   334,064.222   MT  0.99993901   -1 13 46.4
 AB4629
 AB4629!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4629!SPC MD       -   0.99996620  x   1.00001683  =   0.99998303
 AB4629!UTM  18      -   0.99996620  x   0.99993901  =   0.99990521
 AB4629
 AB4629_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3406478399(NAD 83)
 AB4629
 AB4629                          SUPERSEDED SURVEY CONTROL
 AB4629
 AB4629  NAD 83(2007)-  39 32 21.25492(N)    076 55 51.50317(W) AD(2002.00) 0
 AB4629  ELLIP H (02/10/07)  215.469  (m)                       GP(2002.00)    
 AB4629  ELLIP H (08/30/02)  215.472  (m)                       GP(       ) 4 2
 AB4629  NAD 83(1991)-  39 32 21.25436(N)    076 55 51.50371(W) AD(       ) 1
 AB4629  ELLIP H (07/03/96)  215.406  (m)                       GP(       ) 1 1
 AB4629  NAVD 88 (07/03/96)  247.5    (m)  GEOID93  model used  GPS OBS        
 AB4629
 AB4629.Superseded values are not recommended for survey control.
 AB4629
 AB4629.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4629.See file dsdata.pdf to determine how the superseded data were derived.
 AB4629
 AB4629_MARKER: DD = SURVEY DISK
 AB4629_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4629_STAMPING: BETHEL 1995
 AB4629_MARK LOGO: MD-013
 AB4629_PROJECTION: FLUSH
 AB4629_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4629+STABILITY: SURFACE MOTION
 AB4629_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4629+SATELLITE: SATELLITE OBSERVATIONS - March 18, 2020
 AB4629
 AB4629  HISTORY     - Date     Condition        Report By
 AB4629  HISTORY     - 1995     MONUMENTED       MD-013
 AB4629  HISTORY     - 20080415 GOOD             GEOCAC
 AB4629  HISTORY     - 20121125 GOOD             NGS
 AB4629  HISTORY     - 20150326 GOOD             RODCON
 AB4629  HISTORY     - 20200318 GOOD             WTBALL
 AB4629
 AB4629                          STATION DESCRIPTION
 AB4629
 AB4629'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4629'STATION IS LOCATED ABOUT 4 MI (6.4 KM) SOUTHEAST OF WESTMINSTER AND
 AB4629'ABOUT 4 MI (6.4 KM) NORTHWEST OF FINKSBURG AT REESE. TO REACH STATION
 AB4629'FROM THE MD ROUTE 140 (BALTIMORE BLVD) OVERPASS OVER MD ROUTE 27
 AB4629'(RIDGE ROAD) IN WESTMINSTER GO SOUTHEAST ON MD ROUTE 140 FOR 4.3 MI
 AB4629'(6.9 KM) TO THE INTERSECTION WITH BETHEL ROAD AND THE STATION ON THE
 AB4629'LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4629'MONUMENT SET FLUSH WITH THE GROUND IN THE LAWN OF A 2.5 STORY WHITE
 AB4629'HOUSE NOW OCCUPIED BY GLEN FALLS AND HAINES REALTY COMPANIES. IT IS
 AB4629'110 FT (33.5 M) NORTHWEST OF THE CENTERLINE OF BETHEL ROAD, 118 FT
 AB4629'(36.0 M) SOUTHEAST OF THE CENTERLINE OF THE PARKING LOT LEADING TO THE
 AB4629'HOUSE, 84.51 FT (25.76 M) SOUTHWEST OF THE CORNER OF THE HOUSE AND
 AB4629'12.27 FT (3.74 M) WEST OF POWER POLE NO. 196912.
 AB4629
 AB4629                          STATION RECOVERY (2008)
 AB4629
 AB4629'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 AB4629'RECOVERED IN GOOD CONDITION.
 AB4629
 AB4629                          STATION RECOVERY (2012)
 AB4629
 AB4629'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRW)
 AB4629'RECOVERED IN GOOD CONDITION.
 AB4629
 AB4629                          STATION RECOVERY (2015)
 AB4629
 AB4629'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 AB4629'RECOVERED IN GOOD CONDITION.
 AB4629
 AB4629                          STATION RECOVERY (2020)
 AB4629
 AB4629'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AB4629'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7674 ***********************************************************************
 DG7674  DESIGNATION -  BETHEL 2
 DG7674  PID         -  DG7674
 DG7674  STATE/COUNTY-  MD/CAROLINE
 DG7674  COUNTRY     -  US
 DG7674  USGS QUAD   -  GOLDSBORO (2017)
 DG7674
 DG7674                         *CURRENT SURVEY CONTROL
 DG7674  ______________________________________________________________________
 DG7674* NAD 83(2011) POSITION- 39 02 37.29144(N) 075 48 22.23690(W)   ADJUSTED
 DG7674* NAD 83(2011) ELLIP HT-   -16.785 (meters)        (12/21/23)   ADJUSTED
 DG7674* NAD 83(2011) EPOCH   -  2010.00
 DG7674* NAVD 88 ORTHO HEIGHT -    17.544 (meters)       57.56  (feet) ADJUSTED
 DG7674  ______________________________________________________________________
 DG7674  GEOID HEIGHT    -        -34.353 (meters)                     GEOID18
 DG7674  NAD 83(2011) X  -  1,216,270.075 (meters)                     COMP
 DG7674  NAD 83(2011) Y  - -4,808,832.470 (meters)                     COMP
 DG7674  NAD 83(2011) Z  -  3,996,074.843 (meters)                     COMP
 DG7674  LAPLACE CORR    -         -3.63  (seconds)                    DEFLEC18
 DG7674  DYNAMIC HEIGHT  -         17.534 (meters)       57.53  (feet) COMP
 DG7674  MODELED GRAVITY -    980,069.4   (mgal)                       NAVD 88
 DG7674
 DG7674  VERT ORDER      -  SECOND    CLASS I
 DG7674
 DG7674  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DG7674  Standards:
 DG7674         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DG7674            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DG7674  -------------------------------------------------------------------
 DG7674  NETWORK    0.86   1.98           0.37   0.33   1.01      0.11594179
 DG7674  -------------------------------------------------------------------
 DG7674  Click here for local accuracies and other accuracy information.
 DG7674
 DG7674.The horizontal coordinates were established by GPS observations
 DG7674.and adjusted by the MD DOT HIGHWAY ADMIN in December 2023.
 DG7674
 DG7674.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DG7674.been affixed to the stable North American tectonic plate. See 
 DG7674.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DG7674
 DG7674.The horizontal coordinates are valid at the epoch date displayed above
 DG7674.which is a decimal equivalence of Year/Month/Day.
 DG7674
 DG7674.The orthometric height was determined by differential leveling and
 DG7674.adjusted by the NATIONAL GEODETIC SURVEY
 DG7674.in December 2004.
 DG7674
 DG7674.No vertical observational check was made to the station.
 DG7674
 DG7674.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7674.GEOID18 height accuracy estimate available here.
 DG7674
 DG7674.Click photographs - Photos may exist for this station.
 DG7674
 DG7674.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DG7674
 DG7674.The Laplace correction was computed from DEFLEC18 derived deflections.
 DG7674
 DG7674.The ellipsoidal height was determined by GPS observations
 DG7674.and is referenced to NAD 83.
 DG7674
 DG7674.The dynamic height is computed by dividing the NAVD 88
 DG7674.geopotential number by the normal gravity value computed on the
 DG7674.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7674.degrees latitude (g = 980.6199 gals.).
 DG7674
 DG7674.The modeled gravity was interpolated from observed gravity values.
 DG7674
 DG7674. The following values were computed from the NAD 83(2011) position.
 DG7674
 DG7674;                    North         East     Units Scale Factor Converg.
 DG7674;SPC MD       -   153,532.252   503,345.281   MT  0.99995413   +0 44 57.4
 DG7674;SPC MD       -   503,713.73  1,651,391.98   sFT  0.99995413   +0 44 57.4
 DG7674;UTM  18      - 4,321,934.341   430,234.200   MT  0.99965993   -0 30 28.2
 DG7674
 DG7674!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DG7674!SPC MD       -   1.00000263  x   0.99995413  =   0.99995676
 DG7674!UTM  18      -   1.00000263  x   0.99965993  =   0.99966256
 DG7674
 DG7674_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3023421934(NAD 83)
 DG7674
 DG7674                          SUPERSEDED SURVEY CONTROL
 DG7674
 DG7674.No superseded survey control is available for this station.
 DG7674
 DG7674_MARKER: DD = SURVEY DISK
 DG7674_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7674_STAMPING: BETHEL 2 2002
 DG7674_MARK LOGO: MDSHA
 DG7674_PROJECTION: FLUSH
 DG7674_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7674_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7674+STABILITY: SURFACE MOTION
 DG7674_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7674+SATELLITE: SATELLITE OBSERVATIONS - August 07, 2023
 DG7674
 DG7674  HISTORY     - Date     Condition        Report By
 DG7674  HISTORY     - 2002     MONUMENTED       MDSHA
 DG7674  HISTORY     - 20051029 GOOD             USPSQD
 DG7674  HISTORY     - 20230807 GOOD             MDSHA
 DG7674
 DG7674                          STATION DESCRIPTION
 DG7674
 DG7674'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7674'THE STATION IS LOCATED ABOUT 1.2 MI (1.93 KM) NORTHWEST OF GOLDSBORO,
 DG7674'3.7 MI (5.95 KM) EAST OF BRIDGETOWN AND 3.1 MI (4.99 KM) SOUTHWEST OF
 DG7674'HENDERSON.  TO REACH THE STATION FROM THE POST OFFICE IN GOLDSBORO, GO
 DG7674'NORTH ALONG STATE HIGHWAY 313 FOR 0.4 MI (0.64 KM) TO STATE HIGHWAY
 DG7674'287.  TURN LEFT AND GO NORTHWEST ALONG STATE HIGHWAY 313 FOR 1.0 MI
 DG7674'(1.61 KM) TO THE NORTH END OF A METAL FENCE AND STATION ON THE LEFT.
 DG7674'THE STATION IS A MARYLAND STATE SURVEY DISK SET IN THE TOP OF A 12
 DG7674'INCH (30 CM) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.
 DG7674'IT IS 28.0 FT (8.5 M) SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY,
 DG7674'69.7 FT (21.2 M) SOUTHEAST OF POWER POLE NUMBER REA 10-103, 66.0 FT
 DG7674'(20.1 M) SOUTHWEST AND ACROSS THE HIGHWAY FROM A POST AND RAIL FENCE
 DG7674'CORNER, 10.0 FT (3.0 M) NORTHEAST OF A METAL FENCE CORNER AND
 DG7674'CARSONITE WITNESS POST.
 DG7674
 DG7674                          STATION RECOVERY (2005)
 DG7674
 DG7674'RECOVERY NOTE BY US POWER SQUADRON 2005
 DG7674'RECOVERED IN GOOD CONDITION.
 DG7674
 DG7674                          STATION RECOVERY (2023)
 DG7674
 DG7674'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG7674'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7673 ***********************************************************************
 DG7673  DESIGNATION -  BETHEL 2 AZ MK
 DG7673  PID         -  DG7673
 DG7673  STATE/COUNTY-  MD/CAROLINE
 DG7673  COUNTRY     -  US
 DG7673  USGS QUAD   -  GOLDSBORO (2017)
 DG7673
 DG7673                         *CURRENT SURVEY CONTROL
 DG7673  ______________________________________________________________________
 DG7673* NAD 83(2011) POSITION- 39 02 22.86963(N) 075 48 01.95762(W)   ADJUSTED
 DG7673* NAD 83(2011) ELLIP HT-   -17.684 (meters)        (12/21/23)   ADJUSTED
 DG7673* NAD 83(2011) EPOCH   -  2010.00
 DG7673* NAVD 88 ORTHO HEIGHT -    16.689 (meters)       54.75  (feet) ADJUSTED
 DG7673  ______________________________________________________________________
 DG7673  GEOID HEIGHT    -        -34.379 (meters)                     GEOID18
 DG7673  NAD 83(2011) X  -  1,216,811.403 (meters)                     COMP
 DG7673  NAD 83(2011) Y  - -4,808,983.764 (meters)                     COMP
 DG7673  NAD 83(2011) Z  -  3,995,728.855 (meters)                     COMP
 DG7673  LAPLACE CORR    -         -3.62  (seconds)                    DEFLEC18
 DG7673  DYNAMIC HEIGHT  -         16.680 (meters)       54.72  (feet) COMP
 DG7673  MODELED GRAVITY -    980,068.3   (mgal)                       NAVD 88
 DG7673
 DG7673  VERT ORDER      -  SECOND    CLASS I
 DG7673
 DG7673  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DG7673  Standards:
 DG7673         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DG7673            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DG7673  -------------------------------------------------------------------
 DG7673  NETWORK    0.98   2.10           0.44   0.35   1.07     -0.00015657
 DG7673  -------------------------------------------------------------------
 DG7673  Click here for local accuracies and other accuracy information.
 DG7673
 DG7673.The horizontal coordinates were established by GPS observations
 DG7673.and adjusted by the MD DOT HIGHWAY ADMIN in December 2023.
 DG7673
 DG7673.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DG7673.been affixed to the stable North American tectonic plate. See 
 DG7673.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DG7673
 DG7673.The horizontal coordinates are valid at the epoch date displayed above
 DG7673.which is a decimal equivalence of Year/Month/Day.
 DG7673
 DG7673.The orthometric height was determined by differential leveling and
 DG7673.adjusted by the NATIONAL GEODETIC SURVEY
 DG7673.in December 2004.
 DG7673
 DG7673.No vertical observational check was made to the station.
 DG7673
 DG7673.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7673.GEOID18 height accuracy estimate available here.
 DG7673
 DG7673.Click photographs - Photos may exist for this station.
 DG7673
 DG7673.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DG7673
 DG7673.The Laplace correction was computed from DEFLEC18 derived deflections.
 DG7673
 DG7673.The ellipsoidal height was determined by GPS observations
 DG7673.and is referenced to NAD 83.
 DG7673
 DG7673.The dynamic height is computed by dividing the NAVD 88
 DG7673.geopotential number by the normal gravity value computed on the
 DG7673.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7673.degrees latitude (g = 980.6199 gals.).
 DG7673
 DG7673.The modeled gravity was interpolated from observed gravity values.
 DG7673
 DG7673. The following values were computed from the NAD 83(2011) position.
 DG7673
 DG7673;                    North         East     Units Scale Factor Converg.
 DG7673;SPC MD       -   153,093.965   503,838.738   MT  0.99995393   +0 45 10.2
 DG7673;SPC MD       -   502,275.78  1,653,010.93   sFT  0.99995393   +0 45 10.2
 DG7673;UTM  18      - 4,321,485.466   430,717.780   MT  0.99965910   -0 30 15.3
 DG7673
 DG7673!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DG7673!SPC MD       -   1.00000277  x   0.99995393  =   0.99995670
 DG7673!UTM  18      -   1.00000277  x   0.99965910  =   0.99966187
 DG7673
 DG7673_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3071721485(NAD 83)
 DG7673
 DG7673                          SUPERSEDED SURVEY CONTROL
 DG7673
 DG7673.No superseded survey control is available for this station.
 DG7673
 DG7673_MARKER: DD = SURVEY DISK
 DG7673_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7673_STAMPING: BETHEL 2 AZ 2002
 DG7673_MARK LOGO: MDSHA
 DG7673_PROJECTION: FLUSH
 DG7673_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7673_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7673+STABILITY: SURFACE MOTION
 DG7673_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7673+SATELLITE: SATELLITE OBSERVATIONS - August 07, 2023
 DG7673
 DG7673  HISTORY     - Date     Condition        Report By
 DG7673  HISTORY     - 2002     MONUMENTED       MDSHA
 DG7673  HISTORY     - 20051029 GOOD             USPSQD
 DG7673  HISTORY     - 20230807 GOOD             MDSHA
 DG7673
 DG7673                          STATION DESCRIPTION
 DG7673
 DG7673'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7673'THE STATION IS LOCATED ABOUT 0.9 MI (1.45 KM) NORTHWEST OF GOLDSBORO,
 DG7673'4.0 MI (6.44 KM) EAST OF BRIDGETOWN AND 3.1 MI (4.99 KM) SOUTHWEST OF
 DG7673'HENDERSON.  TO REACH THE STATION FROM THE POST OFFICE IN GOLDSBORO, GO
 DG7673'NORTH ALONG STATE HIGHWAY 313 FOR 0.4 MI (0.64 KM) TO STATE HIGHWAY
 DG7673'287.  TURN LEFT AND GO NORTHWEST ALONG STATE HIGHWAY 313 FOR 0.6 MI
 DG7673'(0.97 KM) TO A DEAD END MACADAM DRIVEWAY AND STATION ON THE LEFT.  THE
 DG7673'STATION IS A MARYLAND STATE SURVEY DISK SET IN THE TOP OF A 12 INCH
 DG7673'(30 CM) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS
 DG7673'146.7 FT (44.7 M) SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, 114.5
 DG7673'FT (34.9 M) SOUTHWEST OF TELEPHONE PEDISTAL NUMBER 20, 28.0 FT (8.5 M)
 DG7673'NORTHEAST OF A POWER POLE WITH NO NUMBERS, 7.3 FT (2.2 M) EAST OF A
 DG7673'WOODEN GATE POST AND 4.8 FT (1.5 M) SOUTHEAST OF A CARSONITE WITNESS
 DG7673'POST.
 DG7673
 DG7673                          STATION RECOVERY (2005)
 DG7673
 DG7673'RECOVERY NOTE BY US POWER SQUADRON 2005
 DG7673'RECOVERED IN GOOD CONDITION.
 DG7673
 DG7673                          STATION RECOVERY (2023)
 DG7673
 DG7673'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG7673'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6106 ***********************************************************************
 JV6106  DESIGNATION -  BETHEL PRESB CHURCH SPIRE
 JV6106  PID         -  JV6106
 JV6106  STATE/COUNTY-  MD/HARFORD
 JV6106  COUNTRY     -  US
 JV6106  USGS QUAD   -  PHOENIX (2016)
 JV6106
 JV6106                         *CURRENT SURVEY CONTROL
 JV6106  ______________________________________________________________________
 JV6106* NAD 83(1991) POSITION- 39 36 49.63273(N) 076 31 22.50452(W)   ADJUSTED
 JV6106  ______________________________________________________________________
 JV6106  GEOID HEIGHT    -        -32.455 (meters)                     GEOID18
 JV6106  LAPLACE CORR    -         -2.75  (seconds)                    DEFLEC18
 JV6106  HORZ ORDER      -  THIRD
 JV6106
 JV6106.The horizontal coordinates were established by classical geodetic methods
 JV6106.and adjusted by the National Geodetic Survey in January 1992.
 JV6106
 JV6106.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6106.GEOID18 height accuracy estimate available here.
 JV6106
 JV6106.Click photographs - Photos may exist for this station.
 JV6106
 JV6106.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6106
 JV6106. The following values were computed from the NAD 83(1991) position.
 JV6106
 JV6106;                    North         East     Units Scale Factor Converg.
 JV6106;SPC MD       -   216,255.542   440,969.625   MT  1.00003276   +0 17 58.0
 JV6106;SPC MD       -   709,498.39  1,446,747.84   sFT  1.00003276   +0 17 58.0
 JV6106;SPC PA S     -    31,872.596   705,376.711   MT  1.00006532   +0 47 46.0
 JV6106;SPC PA S     -   104,568.68  2,314,223.43   sFT  1.00006532   +0 47 46.0
 JV6106;UTM  18      - 4,386,000.679   369,271.869   MT  0.99981041   -0 58 16.2
 JV6106
 JV6106_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6927186000(NAD 83)
 JV6106
 JV6106                          SUPERSEDED SURVEY CONTROL
 JV6106
 JV6106  NAD 83(1986)-  39 36 49.62611(N)    076 31 22.50975(W) AD(       ) 3
 JV6106  NAD 27      -  39 36 49.25000(N)    076 31 23.63000(W) AD(       ) 3
 JV6106
 JV6106.Superseded values are not recommended for survey control.
 JV6106
 JV6106.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6106.See file dsdata.pdf to determine how the superseded data were derived.
 JV6106
 JV6106_MARKER: 90 = CHURCH SPIRE
 JV6106
 JV6106  HISTORY     - Date     Condition        Report By
 JV6106  HISTORY     - 1947     FIRST OBSERVED   CGS
 JV6106  HISTORY     - 20041010 POOR             GEOCAC
 JV6106
 JV6106                          STATION DESCRIPTION
 JV6106
 JV6106'DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (CRR)
 JV6106'THE STATION IS LOCATED 0.45 MILE WEST OF MADONNA ON THE RIGHT SIDE
 JV6106'OF STATE HIGHWAY 23.  IT IS A STONE STRUCTURE ABOUT 40 X 60
 JV6106'FEET.  THE POINT OBSERVED WAS THE POINT OF THE WEATHER VANE ATOP
 JV6106'THE SPIRE ON THE CHURCH.  THE SPIRE IS ABOUT 70 FEET TALL.
 JV6106
 JV6106                          STATION RECOVERY (2004)
 JV6106
 JV6106'RECOVERY NOTE BY GEOCACHING 2004 (MFL)
 JV6106'THERE IS NO WEATHER VANE ON THE TOP OF THIS SPIRE CURRENTLY. THERE IS
 JV6106'A POINT AT THE TOP OF A LIGHTNING ARRESTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6198 ***********************************************************************
 DN6198  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6198  DESIGNATION -  BETHEL SPRINGS
 DN6198  PID         -  DN6198
 DN6198  STATE/COUNTY-  MD/CECIL
 DN6198  COUNTRY     -  US
 DN6198  USGS QUAD   -  NORTH EAST (2016)
 DN6198
 DN6198                         *CURRENT SURVEY CONTROL
 DN6198  ______________________________________________________________________
 DN6198* NAD 83(2011) POSITION- 39 37 25.39272(N) 075 58 49.79926(W)   ADJUSTED
 DN6198* NAD 83(2011) ELLIP HT-    53.162 (meters)        (06/27/12)   ADJUSTED
 DN6198* NAD 83(2011) EPOCH   -  2010.00
 DN6198* NAVD 88 ORTHO HEIGHT -    86.25  (meters)      283.0   (feet) GPS OBS
 DN6198  ______________________________________________________________________
 DN6198  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6198  GEOID HEIGHT    -        -33.071 (meters)                     GEOID03
 DN6198  GEOID HEIGHT    -        -33.097 (meters)                     GEOID18
 DN6198  NAD 83(2011) X  -  1,191,758.822 (meters)                     COMP
 DN6198  NAD 83(2011) Y  - -4,772,962.666 (meters)                     COMP
 DN6198  NAD 83(2011) Z  -  4,045,927.161 (meters)                     COMP
 DN6198  LAPLACE CORR    -         -1.60  (seconds)                    DEFLEC18
 DN6198
 DN6198  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6198  Standards:
 DN6198         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6198            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6198  -------------------------------------------------------------------
 DN6198  NETWORK    0.48   0.88           0.22   0.16   0.45      0.11585841
 DN6198  -------------------------------------------------------------------
 DN6198  Click here for local accuracies and other accuracy information.
 DN6198
 DN6198.The horizontal coordinates were established by GPS observations
 DN6198.and adjusted by the National Geodetic Survey in June 2012.
 DN6198
 DN6198.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6198.been affixed to the stable North American tectonic plate. See 
 DN6198.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6198
 DN6198.The horizontal coordinates are valid at the epoch date displayed above
 DN6198.which is a decimal equivalence of Year/Month/Day.
 DN6198
 DN6198.The orthometric height was determined by GPS observations and a
 DN6198.high-resolution geoid model using precise GPS observation and
 DN6198.processing techniques.
 DN6198
 DN6198.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6198.GEOID18 height accuracy estimate available here.
 DN6198
 DN6198.Click photographs - Photos may exist for this station.
 DN6198
 DN6198.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6198
 DN6198.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6198
 DN6198.The ellipsoidal height was determined by GPS observations
 DN6198.and is referenced to NAD 83.
 DN6198
 DN6198. The following values were computed from the NAD 83(2011) position.
 DN6198
 DN6198;                    North         East     Units Scale Factor Converg.
 DN6198;SPC MD       -   217,740.198   487,536.272   MT  1.00003501   +0 38 23.5
 DN6198;SPC MD       -   714,369.30  1,599,525.25   sFT  1.00003501   +0 38 23.5
 DN6198;UTM  18      - 4,386,454.436   415,846.475   MT  0.99968719   -0 37 31.2
 DN6198
 DN6198!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6198!SPC MD       -   0.99999166  x   1.00003501  =   1.00002667
 DN6198!UTM  18      -   0.99999166  x   0.99968719  =   0.99967885
 DN6198
 DN6198_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1584686454(NAD 83)
 DN6198
 DN6198                          SUPERSEDED SURVEY CONTROL
 DN6198
 DN6198  NAD 83(2007)-  39 37 25.39293(N)    075 58 49.80008(W) AD(2002.00) 1
 DN6198  ELLIP H (02/23/12)   53.188  (m)                       GP(2002.00) 4 1
 DN6198
 DN6198.Superseded values are not recommended for survey control.
 DN6198
 DN6198.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6198.See file dsdata.pdf to determine how the superseded data were derived.
 DN6198
 DN6198_MARKER: DD = SURVEY DISK
 DN6198_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6198_STAMPING: BETHEL SPRINGS 2008
 DN6198_MARK LOGO: MD-015
 DN6198_PROJECTION: FLUSH
 DN6198_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6198_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6198+STABILITY: SURFACE MOTION
 DN6198_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6198+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6198
 DN6198  HISTORY     - Date     Condition        Report By
 DN6198  HISTORY     - 20081204 MONUMENTED       GWS
 DN6198
 DN6198                          STATION DESCRIPTION
 DN6198
 DN6198'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6198'THE STATION IS LOCATED 2.4 MI (3.9 KM) NORTHWEST OF THE TOWN OF NORTH
 DN6198'EAST.
 DN6198'
 DN6198'TO REACH FROM THE JUNCTION OF I-95 AND MD-272, GO SOUTH-SOUTHEAST ON
 DN6198'MD 272 FOR 0.60 MI (1.0 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DN6198'SOUTH-SOUTHWEST ON LUMS ROAD FOR 0.11 MI (0.2 KM) TO AN INTERSECTION.
 DN6198'TURN RIGHT AND GO NORTH ON MARYSVILLE ROAD FOR 0.13 MI (0.2 KM) TO AN
 DN6198'INTERSECTION.  TURN LEFT AND GO WEST ON BETHEL CHURCH ROAD FOR 1.24 MI
 DN6198'(2.0 KM) TO AN INTERSECTION.  TURN RIGHT AND GO NORTHWEST ON BETHEL
 DN6198'SPRINGS DRIVE FOR 0.36 MI (0.6 KM) TO A TRAFFIC CIRCLE AND THE MARK IN
 DN6198'THE GRASS ISLAND.
 DN6198'
 DN6198'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6198'CONCRETE MONUMENT IN THE GRASS ISLAND AT THE END OF BETHEL SPRINGS
 DN6198'DRIVE, 41.6 FT (12.7 M) SOUTHEASTERLY OF THE MAILBOX AT 211 BETHEL
 DN6198'SPRINGS DRIVE, 88.0 FT (26.8 M) NORTHEASTERLY OF THE MAILBOX AT 204
 DN6198'BETHEL SPRINGS DRIVE AND 93.0 FT (28.3 M) NORTHWESTERLY OF THE 3 FT
 DN6198'(0.9 M) SQUARE TRANSFORMER BETWEEN 188 AND 196 BETHEL SPRINGS DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2737 ***********************************************************************
 JV2737  DESIGNATION -  BETHESDA
 JV2737  PID         -  JV2737
 JV2737  STATE/COUNTY-  MD/MONTGOMERY
 JV2737  COUNTRY     -  US
 JV2737  USGS QUAD   -  ROCKVILLE (2016)
 JV2737
 JV2737                         *CURRENT SURVEY CONTROL
 JV2737  ______________________________________________________________________
 JV2737* NAD 83(1993) POSITION- 39 00 44.68255(N) 077 09 08.80435(W)   ADJUSTED
 JV2737* NAVD 88 ORTHO HEIGHT -    85.093 (meters)      279.18  (feet) ADJUSTED
 JV2737  ______________________________________________________________________
 JV2737  GEOID HEIGHT    -        -31.776 (meters)                     GEOID18
 JV2737  LAPLACE CORR    -         -1.71  (seconds)                    DEFLEC18
 JV2737  DYNAMIC HEIGHT  -         85.048 (meters)      279.03  (feet) COMP
 JV2737  MODELED GRAVITY -    980,098.7   (mgal)                       NAVD 88
 JV2737
 JV2737  HORZ ORDER      -  THIRD
 JV2737  VERT ORDER      -  SECOND    CLASS 0
 JV2737
 JV2737.The horizontal coordinates were established by classical geodetic methods
 JV2737.and adjusted by the National Geodetic Survey in November 1994.
 JV2737
 JV2737.The orthometric height was determined by differential leveling and
 JV2737.adjusted by the NATIONAL GEODETIC SURVEY
 JV2737.in June 1991.
 JV2737
 JV2737.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2737.GEOID18 height accuracy estimate available here.
 JV2737
 JV2737.Click photographs - Photos may exist for this station.
 JV2737
 JV2737.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2737
 JV2737.The dynamic height is computed by dividing the NAVD 88
 JV2737.geopotential number by the normal gravity value computed on the
 JV2737.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2737.degrees latitude (g = 980.6199 gals.).
 JV2737
 JV2737.The modeled gravity was interpolated from observed gravity values.
 JV2737
 JV2737. The following values were computed from the NAD 83(1993) position.
 JV2737
 JV2737;                    North         East     Units Scale Factor Converg.
 JV2737;SPC MD       -   149,395.072   386,797.120   MT  0.99995268   -0 05 44.4
 JV2737;SPC MD       -   490,140.33  1,269,016.88   sFT  0.99995268   -0 05 44.4
 JV2737;UTM  18      - 4,320,358.059   313,639.329   MT  1.00002767   -1 21 19.2
 JV2737
 JV2737!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2737!SPC MD       -   0.99999163  x   0.99995268  =   0.99994432
 JV2737!UTM  18      -   0.99999163  x   1.00002767  =   1.00001930
 JV2737
 JV2737:                Primary Azimuth Mark                     Grid Az
 JV2737:SPC MD       -  THES 1958                                101 43 03.5
 JV2737:UTM  18      -  THES 1958                                102 58 38.3
 JV2737
 JV2737_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1363920358(NAD 83)
 JV2737
 JV2737|---------------------------------------------------------------------|
 JV2737| PID    Reference Object                     Distance      Geod. Az  |
 JV2737|                                                           dddmmss.s |
 JV2737| JV4355 BETHESDA RAD STA WMAL N TWR         APPROX. 0.9 KM 0580128.7 |
 JV2737| JV2738 BETHESDA RM 1                        33.306 METERS 09509     |
 JV2737| JV4346 THES 1958                           464.055 METERS 1013719.1 |
 JV2737| CK6637 BETHESDA RM 2                        24.640 METERS 24206     |
 JV2737|---------------------------------------------------------------------|
 JV2737
 JV2737                          SUPERSEDED SURVEY CONTROL
 JV2737
 JV2737  NAD 83(1991)-  39 00 44.68209(N)    077 09 08.80545(W) AD(       ) 3
 JV2737  NAD 83(1986)-  39 00 44.68192(N)    077 09 08.81508(W) AD(       ) 3
 JV2737  NAD 27      -  39 00 44.28716(N)    077 09 09.88238(W) AD(       ) 3
 JV2737  NGVD 29              85.32   (m)          279.9    (f) LEVELING    3  
 JV2737  NGVD 29 (11/26/84)   85.325  (m)          279.94   (f) ADJUSTED    2 0
 JV2737
 JV2737.Superseded values are not recommended for survey control.
 JV2737
 JV2737.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2737.See file dsdata.pdf to determine how the superseded data were derived.
 JV2737
 JV2737_MARKER: DS = TRIANGULATION STATION DISK
 JV2737_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2737_STAMPING: BETHESDA 1958
 JV2737_MARK LOGO: CGS
 JV2737_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2737+STABILITY: SURFACE MOTION
 JV2737_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2737+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV2737
 JV2737  HISTORY     - Date     Condition        Report By
 JV2737  HISTORY     - 1958     MONUMENTED       CGS
 JV2737  HISTORY     - 1958     GOOD             CGS
 JV2737  HISTORY     - 19950511 MARK NOT FOUND   USPSQD
 JV2737  HISTORY     - 20030924 GOOD             URS
 JV2737  HISTORY     - 20050405 GOOD             USPSQD
 JV2737
 JV2737                          STATION DESCRIPTION
 JV2737
 JV2737'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2737'THE STATION IS ON THE GROUNDS OF THE BETHESDA COUNTRY CLUB, ABOUT
 JV2737'10 MILES NORTHWEST OF THE CENTER OF WASHINGTON, D.C., 3 MILES
 JV2737'NORTHWEST OF THE CENTER OF BETHESDA AND 5 MILES SOUTH OF THE CENTER
 JV2737'OF ROCKVILLE.  IT IS 113 FEET SOUTH-SOUTHEAST OF THE SOUTHEAST
 JV2737'CORNER OF SWIMMING POOL FENCE, 22 FEET NORTH OF CENTER OF ROAD, 22
 JV2737'FEET SOUTH OF LARGE TREE AND 20 FEET WEST OF A SMALL TOOL SHED.
 JV2737'THE MARK IS SET FLUSH AND THE DISK IS STAMPED BETHESDA 1958.
 JV2737'
 JV2737'R.M. NO. 1 IS 16 FEET NORTHEAST OF TREE.  THE MARK IS SET FLUSH AND
 JV2737'THE DISK IS STAMPED BETHESDA NO 1 1958.
 JV2737'
 JV2737'R.M. NO. 2 48 FEET SOUTHEAST OF ROAD, 12 FEET WEST OF CENTER OF
 JV2737'TRACK ROAD AND 1 FOOT NORTH OF POLE RAIL.  THE MARK IS SET FLUSH
 JV2737'AND THE DISK IS STAMPED BETHESDA NO 2 1958.
 JV2737'
 JV2737'THES (AZI.MK.) IS 32 FEET NORTHEAST OF POWER POLE, 23 FEET SOUTHWEST
 JV2737'OF CENTER OF HARD SURFACED ROAD AND 14-1/2 FEET SOUTHEAST OF
 JV2737'DRIVEWAY.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED THES
 JV2737'1958.  THE MARK IS A STANDARD TRAVERSE STATION DISK.
 JV2737'
 JV2737'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 190 AND 191,
 JV2737'10 MILES NORTHWEST OF WASHINGTON, D.C., GO NORTHEAST ON STATE
 JV2737'HIGHWAY 191 (BRADLEY BLVD.) FOR 1.3 MILES TO CROSSROADS, (SEVEN
 JV2737'LOCKS ROAD) CONTINUE STRAIGHT AHEAD ON STATE HIGHWAY 191 FOR 0.25
 JV2737'MILE TO ENTRANCE OF THE BETHESDA COUNTRY CLUB.  TURN LEFT AND GO 0.15
 JV2737'MILE TO CLUB HOUSE ON RIGHT, CONTINUE THROUGH PARKING LOT
 JV2737'AND BEAR RIGHT ON GRAVEL ROAD FOR 0.05 MILE TO THE STATION AS
 JV2737'DESCRIBED.
 JV2737'
 JV2737'TO REACH THES (AZI. MK.) FROM STATION FOLLOW ROAD BACK TO THE MAIN
 JV2737'ENTRANCE, TURN LEFT ON STATE HIGHWAY 191 AND GO EASTERLY FOR 1.0
 JV2737'MILE TO CROSS ROADS, TURN LEFT ON BURDETT ROAD AND GO NORTHERLY FOR
 JV2737'0.2 MILE TO A T INTERSECTION, TURN LEFT AND GO WEST ON
 JV2737'GREENTREE ROAD FOR 0.15 MILE TO SIDE ROAD RIGHT, CONTINUE
 JV2737'STRAIGHT AHEAD FOR 0.35 MILE TO THE STATION ON LEFT AS
 JV2737'DESCRIBED.
 JV2737'
 JV2737'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV2737
 JV2737                          STATION RECOVERY (1958)
 JV2737
 JV2737'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2737'3.1 MI NE FROM CABIN JOHN.
 JV2737'ABOUT 2.5 MILES NORTH ALONG THE SEVEN LOCKS ROAD FROM THE FIRE
 JV2737'STATION AT CABIN JOHN, THENCE 0.4 MILE EAST ALONG BRADLEY
 JV2737'BOULEVARD, THENCE 0.2 MILE NORTH ALONG THE ROAD LEADING TO THE
 JV2737'BETHESDA COUNTRY CLUB AND GOLF COURSE, ABOUT 225 FEET SOUTH OF
 JV2737'THE SOUTH SIDE OF THE CLUB HOUSE, 108 FEET SOUTH OF THE SOUTHEAST
 JV2737'CORNER OF THE HIGH WIRE FENCE AROUND THE SWIMMING POOL, 19 1/2
 JV2737'FEET WEST OF THE WEST SIDE OF A PUMP HOUSE, 21 FEET SOUTH OF
 JV2737'A DOUBLE 24-INCH LOCUST TREE, SET IN THE TOP OF A CONCRETE POST
 JV2737'FLUSH WITH THE GROUND.
 JV2737
 JV2737                          STATION RECOVERY (1995)
 JV2737
 JV2737'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2737'MARK NOT FOUND.
 JV2737
 JV2737                          STATION RECOVERY (2003)
 JV2737
 JV2737'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 JV2737'RECOVERED IN GOOD CONDITION.
 JV2737
 JV2737                          STATION RECOVERY (2005)
 JV2737
 JV2737'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV2737'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4103 ***********************************************************************
 HV4103  DESIGNATION -  BETHESDA BRADLEY HILLS S SPIPE
 HV4103  PID         -  HV4103
 HV4103  STATE/COUNTY-  MD/MONTGOMERY
 HV4103  COUNTRY     -  US
 HV4103  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4103
 HV4103                         *CURRENT SURVEY CONTROL
 HV4103  ______________________________________________________________________
 HV4103* NAD 83(1993) POSITION- 38 58 48.35404(N) 077 06 48.78384(W)   ADJUSTED
 HV4103  ______________________________________________________________________
 HV4103  GEOID HEIGHT    -        -31.856 (meters)                     GEOID18
 HV4103  LAPLACE CORR    -         -2.61  (seconds)                    DEFLEC18
 HV4103  HORZ ORDER      -  THIRD
 HV4103
 HV4103.The horizontal coordinates were established by classical geodetic methods
 HV4103.and adjusted by the National Geodetic Survey in November 1994.
 HV4103
 HV4103.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4103.GEOID18 height accuracy estimate available here.
 HV4103
 HV4103.Click photographs - Photos may exist for this station.
 HV4103
 HV4103.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4103
 HV4103. The following values were computed from the NAD 83(1993) position.
 HV4103
 HV4103;                    North         East     Units Scale Factor Converg.
 HV4103;SPC MD       -   145,803.045   390,161.204   MT  0.99995150   -0 04 16.6
 HV4103;SPC MD       -   478,355.49  1,280,053.88   sFT  0.99995150   -0 04 16.6
 HV4103;UTM  18      - 4,316,692.726   316,923.893   MT  1.00001273   -1 19 47.6
 HV4103
 HV4103_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1692316692(NAD 83)
 HV4103
 HV4103                          SUPERSEDED SURVEY CONTROL
 HV4103
 HV4103  NAD 83(1991)-  38 58 48.35338(N)    077 06 48.78485(W) AD(       ) 3
 HV4103  NAD 83(1986)-  38 58 48.35341(N)    077 06 48.79466(W) AD(       ) 3
 HV4103  NAD 27      -  38 58 47.95749(N)    077 06 49.86596(W) AD(       ) 3
 HV4103
 HV4103.Superseded values are not recommended for survey control.
 HV4103
 HV4103.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4103.See file dsdata.pdf to determine how the superseded data were derived.
 HV4103
 HV4103_MARKER: 52 = STANDPIPE TANK
 HV4103_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV4103+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 HV4103
 HV4103  HISTORY     - Date     Condition        Report By
 HV4103  HISTORY     - 1943     FIRST OBSERVED   WSSC
 HV4103  HISTORY     - 1952     GOOD             CGS
 HV4103  HISTORY     - 1969     GOOD             CGS
 HV4103  HISTORY     - 19950428 GOOD             USPSQD
 HV4103  HISTORY     - 20020310 GOOD             USPSQD
 HV4103
 HV4103                          STATION DESCRIPTION
 HV4103
 HV4103'DESCRIBED BY WASH SUBURB SAN COMM 1943 (GWL)
 HV4103'THIS INTERSECTION STATION IS THE BRADLEY HILLS STANDPIPE WHICH IS
 HV4103'LOCATED ABOUT 500 FEET W OF BRADLEY ROAD, JUST SW OF THE W END
 HV4103'OF THE LANE LEADING FROM THE W END OF VERNON PLACE TO THE
 HV4103'STANDPIPE PROPERTY.  IT IS A CYLINDRICAL STEEL STRUCTURE.  THE
 HV4103'CENTER OF THE TOP WAS THE POINT OBSERVED UPON.
 HV4103
 HV4103                          STATION RECOVERY (1952)
 HV4103
 HV4103'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (IWS)
 HV4103'THE STATION IS LOCATED ABOUT 1 MILE WEST OF BETHESDA.  IT IS ABOUT
 HV4103'50 FEET HIGH AND PAINTED GREY.
 HV4103'
 HV4103'TO REACH THE STATION FROM THE INTERSECTION OF BRADLEY BLVD. AND
 HV4103'WISCONSIN AVE. IN BETHESDA, GO WESTERLY ON BRADLEY BLVD. FOR ABOUT
 HV4103'1-1/4 MILE TO THE STATION ON THE LEFT.  THE STATION IS ABOUT 0.05
 HV4103'MILE SOUTHWEST OF BRADLEY BLVD.
 HV4103
 HV4103                          STATION RECOVERY (1969)
 HV4103
 HV4103'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 HV4103'STATION IS THE BETHESDA BRADLEY HILLS WASHINGTON SUBURBAN
 HV4103'SANITATION COMMISSION STANDPIPE.  THE POINT OBSERVED WAS THE CENTER
 HV4103'OF THE TOP OF THE TANK.  IT HAS AN ANTENNA OFF CENTER ON TOP OF
 HV4103'THE TANK.  THE TANK IS ABOUT 95 FEET ABOVE THE GROUND AND IS
 HV4103'PAINTED GREEN.
 HV4103'
 HV4103'IT IS LOCATED AT 7007 RADNOR ROAD IN BETHESDA.
 HV4103
 HV4103                          STATION RECOVERY (1995)
 HV4103
 HV4103'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4103'RECOVERED IN GOOD CONDITION.
 HV4103
 HV4103                          STATION RECOVERY (2002)
 HV4103
 HV4103'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV4103'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4473 ***********************************************************************
 HV4473  DESIGNATION -  BETHESDA BRADLEY HILLS N SPIPE
 HV4473  PID         -  HV4473
 HV4473  STATE/COUNTY-  MD/MONTGOMERY
 HV4473  COUNTRY     -  US
 HV4473  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4473
 HV4473                         *CURRENT SURVEY CONTROL
 HV4473  ______________________________________________________________________
 HV4473* NAD 83(1993) POSITION- 38 58 49.31019(N) 077 06 49.50665(W)   ADJUSTED
 HV4473  ______________________________________________________________________
 HV4473  GEOID HEIGHT    -        -31.856 (meters)                     GEOID18
 HV4473  LAPLACE CORR    -         -2.61  (seconds)                    DEFLEC18
 HV4473  HORZ ORDER      -  THIRD
 HV4473
 HV4473.The horizontal coordinates were established by classical geodetic methods
 HV4473.and adjusted by the National Geodetic Survey in November 1994.
 HV4473
 HV4473.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4473.GEOID18 height accuracy estimate available here.
 HV4473
 HV4473.Click photographs - Photos may exist for this station.
 HV4473
 HV4473.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4473
 HV4473. The following values were computed from the NAD 83(1993) position.
 HV4473
 HV4473;                    North         East     Units Scale Factor Converg.
 HV4473;SPC MD       -   145,832.551   390,143.844   MT  0.99995151   -0 04 17.0
 HV4473;SPC MD       -   478,452.29  1,279,996.93   sFT  0.99995151   -0 04 17.0
 HV4473;UTM  18      - 4,316,722.608   316,907.184   MT  1.00001280   -1 19 48.1
 HV4473
 HV4473_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1690716722(NAD 83)
 HV4473
 HV4473                          SUPERSEDED SURVEY CONTROL
 HV4473
 HV4473  NAD 83(1991)-  38 58 49.30950(N)    077 06 49.50777(W) AD(       ) 3
 HV4473  NAD 83(1986)-  38 58 49.30936(N)    077 06 49.51781(W) AD(       ) 3
 HV4473  NAD 27      -  38 58 48.91661(N)    077 06 50.57802(W) AD(       ) 3
 HV4473
 HV4473.Superseded values are not recommended for survey control.
 HV4473
 HV4473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4473.See file dsdata.pdf to determine how the superseded data were derived.
 HV4473
 HV4473_MARKER: 52 = STANDPIPE TANK
 HV4473_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV4473+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 HV4473
 HV4473  HISTORY     - Date     Condition        Report By
 HV4473  HISTORY     - 1969     FIRST OBSERVED   WSSC
 HV4473  HISTORY     - 19950428 GOOD             USPSQD
 HV4473  HISTORY     - 20020310 GOOD             USPSQD
 HV4473
 HV4473                          STATION DESCRIPTION
 HV4473
 HV4473'DESCRIBED BY WASH SUBURB SAN COMM 1969 (JBJ)
 HV4473'THE STATION IS THE CENTER OF THE TOP OF THE BETHESDA BRADLEY HILLS
 HV4473'WASHINGTON SUBURBAN SANITATION COMMISSION STANDPIPE.  IT IS A
 HV4473'STANDPIPE ABOUT 95 FEET ABOVE THE GROUND.
 HV4473'
 HV4473'THE STATION IS LOCATED AT 7007 RADNOR ROAD IN BETHESDA.
 HV4473
 HV4473                          STATION RECOVERY (1995)
 HV4473
 HV4473'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4473'RECOVERED IN GOOD CONDITION.
 HV4473
 HV4473                          STATION RECOVERY (2002)
 HV4473
 HV4473'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV4473'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4360 ***********************************************************************
 JV4360  DESIGNATION -  BETHESDA CABIN JOHN MICROWAVE
 JV4360  PID         -  JV4360
 JV4360  STATE/COUNTY-  MD/MONTGOMERY
 JV4360  COUNTRY     -  US
 JV4360  USGS QUAD   -  ROCKVILLE (2016)
 JV4360
 JV4360                         *CURRENT SURVEY CONTROL
 JV4360  ______________________________________________________________________
 JV4360* NAD 83(1993) POSITION- 39 01 48.93863(N) 077 08 46.31455(W)   ADJUSTED
 JV4360  ______________________________________________________________________
 JV4360  GEOID HEIGHT    -        -31.765 (meters)                     GEOID18
 JV4360  LAPLACE CORR    -         -1.89  (seconds)                    DEFLEC18
 JV4360  HORZ ORDER      -  THIRD
 JV4360
 JV4360.The horizontal coordinates were established by classical geodetic methods
 JV4360.and adjusted by the National Geodetic Survey in November 1994.
 JV4360
 JV4360.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4360.GEOID18 height accuracy estimate available here.
 JV4360
 JV4360.Click photographs - Photos may exist for this station.
 JV4360
 JV4360.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4360
 JV4360. The following values were computed from the NAD 83(1993) position.
 JV4360
 JV4360;                    North         East     Units Scale Factor Converg.
 JV4360;SPC MD       -   151,375.604   387,341.342   MT  0.99995347   -0 05 30.3
 JV4360;SPC MD       -   496,638.13  1,270,802.39   sFT  0.99995347   -0 05 30.3
 JV4360;UTM  18      - 4,322,326.290   314,227.010   MT  1.00002497   -1 21 06.9
 JV4360
 JV4360_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1422722326(NAD 83)
 JV4360
 JV4360                          SUPERSEDED SURVEY CONTROL
 JV4360
 JV4360  NAD 83(1991)-  39 01 48.93823(N)    077 08 46.31550(W) AD(       ) 3
 JV4360  NAD 83(1986)-  39 01 48.93805(N)    077 08 46.32524(W) AD(       ) 3
 JV4360  NAD 27      -  39 01 48.54520(N)    077 08 47.39080(W) AD(       ) 3
 JV4360
 JV4360.Superseded values are not recommended for survey control.
 JV4360
 JV4360.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4360.See file dsdata.pdf to determine how the superseded data were derived.
 JV4360
 JV4360_MARKER: 45 = MICROWAVE TOWER
 JV4360_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4360+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4360
 JV4360  HISTORY     - Date     Condition        Report By
 JV4360  HISTORY     - 1966     FIRST OBSERVED   CGS
 JV4360  HISTORY     - 1970     GOOD             NGS
 JV4360  HISTORY     - 20000828 GOOD             USPSQD
 JV4360  HISTORY     - 20050303 GOOD             USPSQD
 JV4360
 JV4360                          STATION DESCRIPTION
 JV4360
 JV4360'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (JB)
 JV4360'STATION IS CENTER AT THE TOP OF A FOUR LEGGED STEEL TRUSSWORK
 JV4360'MICROWAVE TOWER APPROXIMATELY 275 FEET TALL AND IS PAINTED RED
 JV4360'AND WHITE.  IT IS OWNED AND ON THE GROUNDS, INSIDE A FENCED AREA,
 JV4360'OF THE POTOMAC ELECTRIC POWER CO.  THE TOWER IS LOCATED 3.8 MILES
 JV4360'SOUTH OF THE CENTER OF ROCKVILLE, 3.5 MILES NORTH OF CABIN JOHN,
 JV4360'0.6 MILE EAST OF CABIN JOHN CREEK, AND ABOUT 0.2 MILE WEST OF
 JV4360'HIGHWAY I 270.
 JV4360'
 JV4360'TO REACH FROM MONTROSE ROAD, WHERE CROSSING OVER I 70S HIGHWAY,
 JV4360'GO WEST ON MONTROSE ROAD FOR 0.4 MILE, TURN LEFT AND GO SOUTH ON
 JV4360'SEVEN LOCKS ROAD FOR 1.25 MILES TO A CROSSROAD, TURN LEFT AND GO
 JV4360'SOUTHEAST ON TUCKERMAN LA. FOR 0.7 MILE TO A ROAD RIGHT, TURN
 JV4360'RIGHT AND GO SOUTHERLY ON NEW ROAD FOR 0.45 MILE TO A ROAD LEFT,
 JV4360'TURN LEFT ON ROAD INTO POWER PLANT AREA AND GO EAST FOR 0.05
 JV4360'MILE TO THE TOWER.
 JV4360
 JV4360                          STATION RECOVERY (1970)
 JV4360
 JV4360'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV4360'THE STATION IS THE RED LIGHT MOUNTED IN THE CENTER AND ON TOP
 JV4360'OF THE CABIN JOHN POTOMAC ELECTRIC POWER COMPANY MICROWAVE KGM
 JV4360'44, LOCATED 0.6 MILE NORTH OF THE INTERSECTION OF WESTLAKE DRIVE
 JV4360'AND DEMOCRACY BOULEVARD S OF ROCKVILLE.  IT IS KNOWN AS THE BELLS
 JV4360'MILL SUBSTATION AND IS ABOUT 250 FEET ABOVE THE GROUND.
 JV4360
 JV4360                          STATION RECOVERY (2000)
 JV4360
 JV4360'RECOVERY NOTE BY US POWER SQUADRON 2000 (HPS)
 JV4360'RECOVERED IN GOOD CONDITION.
 JV4360
 JV4360                          STATION RECOVERY (2005)
 JV4360
 JV4360'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4360'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4317 ***********************************************************************
 JV4317  DESIGNATION -  BETHESDA CEDAR LANE WSSC SPIPE
 JV4317  PID         -  JV4317
 JV4317  STATE/COUNTY-  MD/MONTGOMERY
 JV4317  COUNTRY     -  US
 JV4317  USGS QUAD   -  KENSINGTON (2016)
 JV4317
 JV4317                         *CURRENT SURVEY CONTROL
 JV4317  ______________________________________________________________________
 JV4317* NAD 83(1993) POSITION- 39 00 18.01536(N) 077 06 32.52342(W)   ADJUSTED
 JV4317  ______________________________________________________________________
 JV4317  GEOID HEIGHT    -        -31.838 (meters)                     GEOID18
 JV4317  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 JV4317  HORZ ORDER      -  THIRD
 JV4317
 JV4317.The horizontal coordinates were established by classical geodetic methods
 JV4317.and adjusted by the National Geodetic Survey in November 1994.
 JV4317
 JV4317.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4317.GEOID18 height accuracy estimate available here.
 JV4317
 JV4317.Click photographs - Photos may exist for this station.
 JV4317
 JV4317.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4317
 JV4317. The following values were computed from the NAD 83(1993) position.
 JV4317
 JV4317;                    North         East     Units Scale Factor Converg.
 JV4317;SPC MD       -   148,567.373   390,555.869   MT  0.99995238   -0 04 06.4
 JV4317;SPC MD       -   487,424.79  1,281,348.71   sFT  0.99995238   -0 04 06.4
 JV4317;UTM  18      - 4,319,447.880   317,379.227   MT  1.00001067   -1 19 40.0
 JV4317
 JV4317_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1737919447(NAD 83)
 JV4317
 JV4317                          SUPERSEDED SURVEY CONTROL
 JV4317
 JV4317  NAD 83(1991)-  39 00 18.01480(N)    077 06 32.52423(W) AD(       ) 3
 JV4317  NAD 83(1986)-  39 00 18.01463(N)    077 06 32.53410(W) AD(       ) 3
 JV4317  NAD 27      -  39 00 17.62043(N)    077 06 33.60565(W) AD(       ) 3
 JV4317
 JV4317.Superseded values are not recommended for survey control.
 JV4317
 JV4317.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4317.See file dsdata.pdf to determine how the superseded data were derived.
 JV4317
 JV4317_MARKER: 52 = STANDPIPE TANK
 JV4317_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4317+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4317
 JV4317  HISTORY     - Date     Condition        Report By
 JV4317  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV4317  HISTORY     - 19950428 GOOD             USPSQD
 JV4317  HISTORY     - 20000828 GOOD             USPSQD
 JV4317  HISTORY     - 20050303 GOOD             USPSQD
 JV4317
 JV4317                          STATION DESCRIPTION
 JV4317
 JV4317'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV4317'THE STATION IS THE CENTER OF THE TOP OF A 105 FOOT TALL STANDPIPE,
 JV4317'BETHESDA CEDAR WASHINGTON SUBURBAN SANITATION COMMISSION TANK,
 JV4317'LOCATED 0.6 MILES WEST SOUTHWEST OF THE INTERSECTION OF CEDAR
 JV4317'LANE AND WISCONSIN AVENUE, 100 FEET NORTH OF THE CENTERLINE OF
 JV4317'CEDAR LANE AND ON THE PROPERTY OWNED BY THE WASHINGTON SUBURBAN
 JV4317'SANITATION COMMISSION.
 JV4317
 JV4317                          STATION RECOVERY (1995)
 JV4317
 JV4317'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4317'RECOVERED IN GOOD CONDITION.
 JV4317
 JV4317                          STATION RECOVERY (2000)
 JV4317
 JV4317'RECOVERY NOTE BY US POWER SQUADRON 2000 (HPS)
 JV4317'RECOVERED IN GOOD CONDITION.
 JV4317
 JV4317                          STATION RECOVERY (2005)
 JV4317
 JV4317'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4317'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4293 ***********************************************************************
 JV4293  DESIGNATION -  BETHESDA GEORGETOWN PREP BELL
 JV4293  PID         -  JV4293
 JV4293  STATE/COUNTY-  MD/MONTGOMERY
 JV4293  COUNTRY     -  US
 JV4293  USGS QUAD   -  KENSINGTON (2016)
 JV4293
 JV4293                         *CURRENT SURVEY CONTROL
 JV4293  ______________________________________________________________________
 JV4293* NAD 83(1993) POSITION- 39 02 00.07499(N) 077 06 34.74633(W)   ADJUSTED
 JV4293  ______________________________________________________________________
 JV4293  GEOID HEIGHT    -        -31.812 (meters)                     GEOID18
 JV4293  LAPLACE CORR    -         -3.35  (seconds)                    DEFLEC18
 JV4293  HORZ ORDER      -  THIRD
 JV4293
 JV4293.The horizontal coordinates were established by classical geodetic methods
 JV4293.and adjusted by the National Geodetic Survey in November 1994.
 JV4293
 JV4293.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4293.GEOID18 height accuracy estimate available here.
 JV4293
 JV4293.Click photographs - Photos may exist for this station.
 JV4293
 JV4293.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4293
 JV4293. The following values were computed from the NAD 83(1993) position.
 JV4293
 JV4293;                    North         East     Units Scale Factor Converg.
 JV4293;SPC MD       -   151,714.574   390,506.166   MT  0.99995362   -0 04 07.8
 JV4293;SPC MD       -   497,750.23  1,281,185.65   sFT  0.99995362   -0 04 07.8
 JV4293;UTM  18      - 4,322,595.595   317,398.728   MT  1.00001058   -1 19 44.3
 JV4293
 JV4293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1739822595(NAD 83)
 JV4293
 JV4293                          SUPERSEDED SURVEY CONTROL
 JV4293
 JV4293  NAD 83(1991)-  39 02 00.07459(N)    077 06 34.74706(W) AD(       ) 3
 JV4293  NAD 83(1986)-  39 02 00.07436(N)    077 06 34.75684(W) AD(       ) 3
 JV4293  NAD 27      -  39 01 59.68237(N)    077 06 35.82688(W) AD(       ) 3
 JV4293
 JV4293.Superseded values are not recommended for survey control.
 JV4293
 JV4293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4293.See file dsdata.pdf to determine how the superseded data were derived.
 JV4293
 JV4293_MARKER: 75 = BELFRY
 JV4293
 JV4293  HISTORY     - Date     Condition        Report By
 JV4293  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV4293  HISTORY     - 19950605 GOOD             USPSQD
 JV4293
 JV4293                          STATION DESCRIPTION
 JV4293
 JV4293'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV4293'THE STATION IS THE APEX OF THE BETHESDA GEORGETOWN PREP SCHOOL
 JV4293'BELFRY, LOCATED AT 10900 ROCKVILLE PIKE.  THE OVERALL HEIGHT IS
 JV4293'ABOUT 97 FEET.
 JV4293
 JV4293                          STATION RECOVERY (1995)
 JV4293
 JV4293'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4293'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4269 ***********************************************************************
 JV4269  DESIGNATION -  BETHESDA NAVAL MED CTR BCN
 JV4269  PID         -  JV4269
 JV4269  STATE/COUNTY-  MD/MONTGOMERY
 JV4269  COUNTRY     -  US
 JV4269  USGS QUAD   -  KENSINGTON (2016)
 JV4269
 JV4269                         *CURRENT SURVEY CONTROL
 JV4269  ______________________________________________________________________
 JV4269* NAD 83(1993) POSITION- 39 00 06.63880(N) 077 05 39.52782(W)   ADJUSTED
 JV4269  ______________________________________________________________________
 JV4269  GEOID HEIGHT    -        -31.865 (meters)                     GEOID18
 JV4269  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 JV4269  HORZ ORDER      -  THIRD
 JV4269
 JV4269.The horizontal coordinates were established by classical geodetic methods
 JV4269.and adjusted by the National Geodetic Survey in November 1994.
 JV4269
 JV4269.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4269.GEOID18 height accuracy estimate available here.
 JV4269
 JV4269.Click photographs - Photos may exist for this station.
 JV4269
 JV4269.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4269
 JV4269. The following values were computed from the NAD 83(1993) position.
 JV4269
 JV4269;                    North         East     Units Scale Factor Converg.
 JV4269;SPC MD       -   148,215.143   391,830.583   MT  0.99995226   -0 03 33.1
 JV4269;SPC MD       -   486,269.18  1,285,530.84   sFT  0.99995226   -0 03 33.1
 JV4269;UTM  18      - 4,319,067.700   318,645.962   MT  1.00000499   -1 19 06.3
 JV4269
 JV4269_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1864519067(NAD 83)
 JV4269
 JV4269                          SUPERSEDED SURVEY CONTROL
 JV4269
 JV4269  NAD 83(1991)-  39 00 06.63854(N)    077 05 39.52884(W) AD(       ) 3
 JV4269  NAD 83(1986)-  39 00 06.63829(N)    077 05 39.53873(W) AD(       ) 3
 JV4269  NAD 27      -  39 00 06.24404(N)    077 05 40.61098(W) AD(       ) 3
 JV4269
 JV4269.Superseded values are not recommended for survey control.
 JV4269
 JV4269.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4269.See file dsdata.pdf to determine how the superseded data were derived.
 JV4269
 JV4269_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4269+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4269
 JV4269  HISTORY     - Date     Condition        Report By
 JV4269  HISTORY     - 1943     FIRST OBSERVED   CGS
 JV4269  HISTORY     - 1943     GOOD             CGS
 JV4269  HISTORY     - 1966     GOOD             CGS
 JV4269  HISTORY     - 20050303 GOOD             USPSQD
 JV4269
 JV4269                          STATION DESCRIPTION
 JV4269
 JV4269'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4269'THIS INTERSECTION STATION IS THE RED REVOLVING BEACON ATOP THE
 JV4269'U.S. NAVAL MEDICAL CENTER BUILDING WHICH IS LOCATED ON
 JV4269'U.S. HIGHWAY 240, ABOUT 2 MILES N OF BETHESDA.  THE LIGHT WAS
 JV4269'THE POINT OBSERVED UPON.  THIS STATION WAS NOT VISITED.
 JV4269
 JV4269                          STATION RECOVERY (1943)
 JV4269
 JV4269'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (WHB)
 JV4269'STATION IS THE CENTER OF THE LIGHT (APPARENTLY IN THE CENTER OF
 JV4269'A SQUARE PLATFORM WITH LIGHTNING RODS ON THE CORNERS PROJECTING
 JV4269'ABOVE THE LIGHT) ON THE HIGHEST PART OF THE NAVAL MEDICAL CENTER
 JV4269'BUILDING LOCATED ON THE E SIDE OF THE ROCKVILLE PIKE, 1.15 MILES
 JV4269'N OF THE INTERSECTION OF WISCONSIN AVENUE AND OLD GEORGETOWN ROAD
 JV4269'IN BETHESDA, MARYLAND.
 JV4269'
 JV4269'LOCATED AS STATION NAVMED FOR THE BUREAU OF STANDARDS.
 JV4269
 JV4269                          STATION RECOVERY (1966)
 JV4269
 JV4269'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV4269'THE STATION IS LOCATED ABOUT 1 MILE NORTH OF BETHESDA.  IT IS ON
 JV4269'TOP OF THE NAVAL MEDICAL CENTER.  THE POINT INTERSECTED WAS THE
 JV4269'RED BLINKING LIGHT.
 JV4269
 JV4269                          STATION RECOVERY (2005)
 JV4269
 JV4269'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4269'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4355 ***********************************************************************
 JV4355  DESIGNATION -  BETHESDA RAD STA WMAL N TWR
 JV4355  PID         -  JV4355
 JV4355  STATE/COUNTY-  MD/MONTGOMERY
 JV4355  COUNTRY     -  US
 JV4355  USGS QUAD   -  ROCKVILLE (2016)
 JV4355
 JV4355                         *CURRENT SURVEY CONTROL
 JV4355  ______________________________________________________________________
 JV4355* NAD 83(1993) POSITION- 39 01 00.82042(N) 077 08 35.66490(W)   ADJUSTED
 JV4355  ______________________________________________________________________
 JV4355  GEOID HEIGHT    -        -31.780 (meters)                     GEOID18
 JV4355  LAPLACE CORR    -         -1.80  (seconds)                    DEFLEC18
 JV4355  HORZ ORDER      -  THIRD
 JV4355
 JV4355.The horizontal coordinates were established by classical geodetic methods
 JV4355.and adjusted by the National Geodetic Survey in November 1994.
 JV4355
 JV4355.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4355.GEOID18 height accuracy estimate available here.
 JV4355
 JV4355.Click photographs - Photos may exist for this station.
 JV4355
 JV4355.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4355
 JV4355. The following values were computed from the NAD 83(1993) position.
 JV4355
 JV4355;                    North         East     Units Scale Factor Converg.
 JV4355;SPC MD       -   149,891.412   387,595.153   MT  0.99995287   -0 05 23.6
 JV4355;SPC MD       -   491,768.74  1,271,635.10   sFT  0.99995287   -0 05 23.6
 JV4355;UTM  18      - 4,320,836.769   314,448.141   MT  1.00002396   -1 20 58.8
 JV4355
 JV4355_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1444820836(NAD 83)
 JV4355
 JV4355                          SUPERSEDED SURVEY CONTROL
 JV4355
 JV4355  NAD 83(1991)-  39 01 00.81995(N)    077 08 35.66600(W) AD(       ) 3
 JV4355  NAD 83(1986)-  39 01 00.81976(N)    077 08 35.67560(W) AD(       ) 3
 JV4355  NAD 27      -  39 01 00.42879(N)    077 08 36.73617(W) AD(       ) 3
 JV4355
 JV4355.Superseded values are not recommended for survey control.
 JV4355
 JV4355.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4355.See file dsdata.pdf to determine how the superseded data were derived.
 JV4355
 JV4355_MARKER: 43 = RADIO/TV TOWER
 JV4355_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4355+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4355
 JV4355  HISTORY     - Date     Condition        Report By
 JV4355  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4355  HISTORY     - 19950430 GOOD             USPSQD
 JV4355  HISTORY     - 20031201 GOOD             USPSQD
 JV4355  HISTORY     - 20050303 GOOD             USPSQD
 JV4355
 JV4355                          STATION DESCRIPTION
 JV4355
 JV4355'NO DESCRIPTIVE TEXT AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2738 ***********************************************************************
 JV2738  DESIGNATION -  BETHESDA RM 1
 JV2738  PID         -  JV2738
 JV2738  STATE/COUNTY-  MD/MONTGOMERY
 JV2738  COUNTRY     -  US
 JV2738  USGS QUAD   -  ROCKVILLE (2016)
 JV2738
 JV2738                         *CURRENT SURVEY CONTROL
 JV2738  ______________________________________________________________________
 JV2738* NAD 83(1986) POSITION- 39 00 44.59   (N) 077 09 07.42   (W)   HD_HELD1
 JV2738* NAVD 88 ORTHO HEIGHT -    82.752 (meters)      271.50  (feet) ADJUSTED
 JV2738  ______________________________________________________________________
 JV2738  GEOID HEIGHT    -        -31.777 (meters)                     GEOID18
 JV2738  DYNAMIC HEIGHT  -         82.708 (meters)      271.35  (feet) COMP
 JV2738  MODELED GRAVITY -    980,098.7   (mgal)                       NAVD 88
 JV2738
 JV2738  VERT ORDER      -  SECOND    CLASS 0
 JV2738
 JV2738.The horizontal coordinates were determined by differentially corrected
 JV2738.hand held GPS observations or other comparable positioning techniques
 JV2738.and have an estimated accuracy of +/- 3 meters.
 JV2738
 JV2738.The orthometric height was determined by differential leveling and
 JV2738.adjusted by the NATIONAL GEODETIC SURVEY
 JV2738.in June 1991.
 JV2738
 JV2738.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2738.GEOID18 height accuracy estimate available here.
 JV2738
 JV2738.Click photographs - Photos may exist for this station.
 JV2738
 JV2738.The dynamic height is computed by dividing the NAVD 88
 JV2738.geopotential number by the normal gravity value computed on the
 JV2738.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2738.degrees latitude (g = 980.6199 gals.).
 JV2738
 JV2738.The modeled gravity was interpolated from observed gravity values.
 JV2738
 JV2738;                    North         East    Units  Estimated Accuracy
 JV2738;SPC MD       -   149,392.2     386,830.4     MT  (+/- 3 meters HH1 GPS) 
 JV2738
 JV2738_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1367220354(NAD 83)
 JV2738
 JV2738                          SUPERSEDED SURVEY CONTROL
 JV2738
 JV2738  NGVD 29 (11/26/84)   82.984  (m)          272.26   (f) ADJUSTED    2 0
 JV2738
 JV2738.Superseded values are not recommended for survey control.
 JV2738
 JV2738.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2738.See file dsdata.pdf to determine how the superseded data were derived.
 JV2738
 JV2738_MARKER: DR = REFERENCE MARK DISK
 JV2738_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2738_STAMPING: BETHESDA NO 1 1958
 JV2738_MARK LOGO: CGS
 JV2738_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2738+STABILITY: SURFACE MOTION
 JV2738
 JV2738  HISTORY     - Date     Condition        Report By
 JV2738  HISTORY     - 1958     MONUMENTED       CGS
 JV2738  HISTORY     - 19950511 MARK NOT FOUND   USPSQD
 JV2738  HISTORY     - 20031201 MARK NOT FOUND   USPSQD
 JV2738
 JV2738                          STATION DESCRIPTION
 JV2738
 JV2738'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2738'3.1 MI NE FROM CABIN JOHN.
 JV2738'ABOUT 2.5 MILES NORTH ALONG THE SEVEN LOCKS ROAD FROM THE FIRE
 JV2738'STATION AT CABIN JOHN, THENCE 0.4 MILE EAST ALONG BRADLEY BOULEVARD,
 JV2738'THENCE 0.2 MILE NORTH ALONG THE ROAD LEADING TO THE BETHESDA
 JV2738'COUNTRY CLUB AND GOLF COURSE, 109.5 FEET SOUTHEAST OF THE
 JV2738'STATION, 1 FOOT NORTH OF A RAILING FENCE, 15 FEET WEST OF A
 JV2738'DRIVEWAY, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 JV2738'GROUND AND ABOUT 7 FEET LOWER THAN THE STATION.
 JV2738
 JV2738                          STATION RECOVERY (1995)
 JV2738
 JV2738'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2738'MARK NOT FOUND.
 JV2738
 JV2738                          STATION RECOVERY (2003)
 JV2738
 JV2738'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV2738'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4463 ***********************************************************************
 HV4463  DESIGNATION -  BETHESDA TV STA WDCA MAST
 HV4463  PID         -  HV4463
 HV4463  STATE/COUNTY-  MD/MONTGOMERY
 HV4463  COUNTRY     -  US
 HV4463  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4463
 HV4463                         *CURRENT SURVEY CONTROL
 HV4463  ______________________________________________________________________
 HV4463* NAD 83(1993) POSITION- 38 57 49.95328(N) 077 06 17.16633(W)   ADJUSTED
 HV4463  ______________________________________________________________________
 HV4463  GEOID HEIGHT    -        -31.887 (meters)                     GEOID18
 HV4463  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 HV4463  HORZ ORDER      -  THIRD
 HV4463
 HV4463.The horizontal coordinates were established by classical geodetic methods
 HV4463.and adjusted by the National Geodetic Survey in November 1994.
 HV4463
 HV4463.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4463.GEOID18 height accuracy estimate available here.
 HV4463
 HV4463.Click photographs - Photos may exist for this station.
 HV4463
 HV4463.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4463
 HV4463. The following values were computed from the NAD 83(1993) position.
 HV4463
 HV4463;                    North         East     Units Scale Factor Converg.
 HV4463;SPC MD       -   144,001.292   390,920.122   MT  0.99995103   -0 03 56.7
 HV4463;SPC MD       -   472,444.24  1,282,543.77   sFT  0.99995103   -0 03 56.7
 HV4463;UTM  18      - 4,314,874.632   317,643.102   MT  1.00000949   -1 19 26.1
 HV4463
 HV4463_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1764314874(NAD 83)
 HV4463
 HV4463                          SUPERSEDED SURVEY CONTROL
 HV4463
 HV4463  NAD 83(1991)-  38 57 49.95263(N)    077 06 17.16765(W) AD(       ) 3
 HV4463  NAD 83(1986)-  38 57 49.95234(N)    077 06 17.17735(W) AD(       ) 3
 HV4463  NAD 27      -  38 57 49.55818(N)    077 06 18.25175(W) AD(       ) 3
 HV4463
 HV4463.Superseded values are not recommended for survey control.
 HV4463
 HV4463.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4463.See file dsdata.pdf to determine how the superseded data were derived.
 HV4463
 HV4463_MARKER: 42 = RADIO/TV MAST
 HV4463_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV4463+SATELLITE: SATELLITE OBSERVATIONS - December 01, 2003
 HV4463
 HV4463  HISTORY     - Date     Condition        Report By
 HV4463  HISTORY     - 1969     FIRST OBSERVED   CGS
 HV4463  HISTORY     - 19950428 GOOD             USPSQD
 HV4463  HISTORY     - 20031201 GOOD             USPSQD
 HV4463
 HV4463                          STATION DESCRIPTION
 HV4463
 HV4463'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 HV4463'THE STATION IS THE RED LIGHT MOUNTED ON TOP OF THE BETHESDA
 HV4463'TELEVISION STATION WDCA MAST.  IT IS ABOUT 809 FEET ABOVE THE
 HV4463'GROUND.
 HV4463'
 HV4463'THE STATION IS LOCATED AT 5202 RIVER ROAD.
 HV4463
 HV4463                          STATION RECOVERY (1995)
 HV4463
 HV4463'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4463'RECOVERED IN GOOD CONDITION.
 HV4463
 HV4463                          STATION RECOVERY (2003)
 HV4463
 HV4463'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV4463'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7979 ***********************************************************************
 AJ7979  FBN         -  This is a Federal Base Network Control Station.
 AJ7979  DESIGNATION -  BETTERTON
 AJ7979  PID         -  AJ7979
 AJ7979  STATE/COUNTY-  MD/KENT
 AJ7979  COUNTRY     -  US
 AJ7979  USGS QUAD   -  BETTERTON (2017)
 AJ7979
 AJ7979                         *CURRENT SURVEY CONTROL
 AJ7979  ______________________________________________________________________
 AJ7979* NAD 83(2011) POSITION- 39 22 14.91282(N) 076 03 49.77300(W)   ADJUSTED
 AJ7979* NAD 83(2011) ELLIP HT-   -31.862 (meters)        (06/27/12)   ADJUSTED
 AJ7979* NAD 83(2011) EPOCH   -  2010.00
 AJ7979* NAVD 88 ORTHO HEIGHT -     1.491 (meters)        4.89  (feet) ADJUSTED
 AJ7979  ______________________________________________________________________
 AJ7979  GEOID HEIGHT    -        -33.344 (meters)                     GEOID18
 AJ7979  NAD 83(2011) X  -  1,189,101.725 (meters)                     COMP
 AJ7979  NAD 83(2011) Y  - -4,791,961.132 (meters)                     COMP
 AJ7979  NAD 83(2011) Z  -  4,024,205.417 (meters)                     COMP
 AJ7979  LAPLACE CORR    -         -1.15  (seconds)                    DEFLEC18
 AJ7979  DYNAMIC HEIGHT  -          1.491 (meters)        4.89  (feet) COMP
 AJ7979  MODELED GRAVITY -    980,117.5   (mgal)                       NAVD 88
 AJ7979
 AJ7979  VERT ORDER      -  SECOND    CLASS I
 AJ7979
 AJ7979  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7979  Standards:
 AJ7979         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7979            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7979  -------------------------------------------------------------------
 AJ7979  NETWORK    0.43   0.92           0.19   0.16   0.47     -0.00812717
 AJ7979  -------------------------------------------------------------------
 AJ7979  Click here for local accuracies and other accuracy information.
 AJ7979
 AJ7979.The horizontal coordinates were established by GPS observations
 AJ7979.and adjusted by the National Geodetic Survey in June 2012.
 AJ7979
 AJ7979.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7979.been affixed to the stable North American tectonic plate. See 
 AJ7979.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7979
 AJ7979.The horizontal coordinates are valid at the epoch date displayed above
 AJ7979.which is a decimal equivalence of Year/Month/Day.
 AJ7979
 AJ7979.The orthometric height was determined by differential leveling and
 AJ7979.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7979.in December 2003.
 AJ7979
 AJ7979.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7979.GEOID18 height accuracy estimate available here.
 AJ7979
 AJ7979.Click photographs - Photos may exist for this station.
 AJ7979
 AJ7979.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7979
 AJ7979.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7979
 AJ7979.The ellipsoidal height was determined by GPS observations
 AJ7979.and is referenced to NAD 83.
 AJ7979
 AJ7979.The dynamic height is computed by dividing the NAVD 88
 AJ7979.geopotential number by the normal gravity value computed on the
 AJ7979.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7979.degrees latitude (g = 980.6199 gals.).
 AJ7979
 AJ7979.The modeled gravity was interpolated from observed gravity values.
 AJ7979
 AJ7979. The following values were computed from the NAD 83(2011) position.
 AJ7979
 AJ7979;                    North         East     Units Scale Factor Converg.
 AJ7979;SPC MD       -   189,585.324   480,669.954   MT  0.99998711   +0 35 15.3
 AJ7979;SPC MD       -   621,997.85  1,576,998.01   sFT  0.99998711   +0 35 15.3
 AJ7979;UTM  18      - 4,358,466.661   408,363.166   MT  0.99970339   -0 40 29.5
 AJ7979
 AJ7979!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7979!SPC MD       -   1.00000500  x   0.99998711  =   0.99999211
 AJ7979!UTM  18      -   1.00000500  x   0.99970339  =   0.99970839
 AJ7979
 AJ7979_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0836358466(NAD 83)
 AJ7979
 AJ7979                          SUPERSEDED SURVEY CONTROL
 AJ7979
 AJ7979  NAD 83(2007)-  39 22 14.91304(N)    076 03 49.77374(W) AD(2002.00) 0
 AJ7979  ELLIP H (02/10/07)  -31.838  (m)                       GP(2002.00)    
 AJ7979  NAD 83(1991)-  39 22 14.91312(N)    076 03 49.77390(W) AD(       ) A
 AJ7979  ELLIP H (02/12/02)  -31.839  (m)                       GP(       ) 4 1
 AJ7979  NAVD 88 (02/12/02)    1.5    (m)  GEOID99  model used  GPS OBS        
 AJ7979
 AJ7979.Superseded values are not recommended for survey control.
 AJ7979
 AJ7979.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7979.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7979
 AJ7979_MARKER: DD = SURVEY DISK
 AJ7979_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7979_STAMPING: BETTERTON 1997
 AJ7979_MARK LOGO: MDSHA
 AJ7979_PROJECTION: RECESSED 30 CENTIMETERS
 AJ7979_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ7979_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7979+STABILITY: SURFACE MOTION
 AJ7979_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7979+SATELLITE: SATELLITE OBSERVATIONS - April 16, 2025
 AJ7979
 AJ7979  HISTORY     - Date     Condition        Report By
 AJ7979  HISTORY     - 1997     MONUMENTED       MDSHA
 AJ7979  HISTORY     - 20000328 GOOD             MDSHA
 AJ7979  HISTORY     - 20010215 GOOD             MDSHA
 AJ7979  HISTORY     - 20211226 GOOD             MDSHA
 AJ7979  HISTORY     - 20250416 GOOD             PROFLN
 AJ7979
 AJ7979                          STATION DESCRIPTION
 AJ7979
 AJ7979'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7979'THE STATION IS LOCATED ABOUT 10.8 MILES (17.4 KM) NORTH OF
 AJ7979'CHESTERTOWN, 10.9 MILES (17.5 KM) WEST-SOUTHWEST OF CECILTON, AND 11.2
 AJ7979'MILES (18.0 KM) SOUTHEAST OF ABERDEEN IN THE TOWN OF BETTERTON. TO
 AJ7979'REACH THE STATION FROM FIRST STREET AND STATE HIGHWAY 292 (MAIN
 AJ7979'STREET) IN BETTERTON, GO NORTH ON STATE HIGHWAY 292 FOR 0.1 MILES (0.2
 AJ7979'KM) TO THE BOTTOM OF A STEEP SLOPE BEFORE THE WATERS EDGE.  TURN LEFT
 AJ7979'AND GO WEST INTO A PARKING AREA FOR 0.05 MILES (0.08 KM) TO THE
 AJ7979'STATION ON THE RIGHT, IN A GRASS AREA BETWEEN A PAVILION AND THE
 AJ7979'SASSAFRAS RIVER.  THE STATION IS A STANDARD MARYLAND STATE HIGHWAY
 AJ7979'SURVEY DISK SET IN THE TOP OF A 12 INCH ROUND CONCRETE MONUMENT, WHICH
 AJ7979'IS 3 INCH BELOW THE SURFACE OF THE GROUND.  IT IS 34.6 FEET (10.5 M)
 AJ7979'WEST OF A METAL LIGHT POLE, 101.0 FEET (30.8 M) NORTHWEST OF A
 AJ7979'HISTORIC SIGN WHICH READS CREWS LANDING, 10.6 FEET (3.2 M)
 AJ7979'SOUTH-SOUTHEAST OF A BREAK IN A10 FOOT WIDE WOODEN WALKWAY LEADING
 AJ7979'SOUTHWEST TO THE PAVILION, 39.0 FEET (11.9 M) NORTHEAST OF THE
 AJ7979'NORTHEAST CORNER OF THE STEPS LEADING SOUTH TO THE PAVILION.
 AJ7979
 AJ7979                          STATION RECOVERY (2001)
 AJ7979
 AJ7979'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ7979'RECOVERED AS DESCRIBED.
 AJ7979
 AJ7979                          STATION RECOVERY (2021)
 AJ7979
 AJ7979'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 AJ7979'RECOVERED IN GOOD CONDITION.DESCRIPTION HAS BEEN UPDATED. THE MARK IS
 AJ7979'LOCATED ABOUT 11.2 MI (18.0 KM) NORTH OF CHESTERTOWN, 5.3 MI (8.5 KM)
 AJ7979'NORTH OF LYNCH, 3.2 MI (5.1 KM) NORTH-NORTHWEST OF STILL POND AND IN
 AJ7979'THE TOWN OF BETTERTON, MD.
 AJ7979'
 AJ7979'TO REACH THE MARK FROM THE INTERSECTION OF BESSICKS CORNER ROAD AND MD
 AJ7979'292 (STILL POND ROAD) PROCEED NORTH ON MD 292 FOR 4.39 KM (2.73 MI) TO
 AJ7979'BETTERTON BEACH.  THE MARK IS SOUTH OF THE WOODEN BOARDWALK ON
 AJ7979'BETTERTON BEACH.
 AJ7979'
 AJ7979'THE MARK IS 159.4 FT (48.6 M) WEST-NORTHWEST OF A UTILITY POLE WITH
 AJ7979'ELECTRIC METERS, 14.2 FT (4.3 M) SOUTH OF THE CENTERLINE OF THE
 AJ7979'BOARDWALK, 41.8 FT (12.7 M) EAST-NORTHEAST OF THE CENTERLINE OF 6 FT
 AJ7979'(1.8 M) WIDE WOOD STEPS SET IN THE TOP OF A 12-IN (30 CM) ROUND
 AJ7979'CONCRETE POST AND ABOUT 0.25 FT (8 CM) LOWER THAN THE GROUND(SAND).
 AJ7979
 AJ7979                          STATION RECOVERY (2025)
 AJ7979
 AJ7979'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 AJ7979'A VALVE BOX PLACED OVER IT FOR ACCESS.  THE MARK IS 48 FT (14.6 M)
 AJ7979'WEST OF NORTH-SOUTH BOARDWALK AND 14 FT (4.3 M) SOUTH OF THE EAST-WEST
 AJ7979'MAIN BOARDWALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9394 ***********************************************************************
 DR9394  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9394  DESIGNATION -  BETTERTON AZ MK
 DR9394  PID         -  DR9394
 DR9394  STATE/COUNTY-  MD/KENT
 DR9394  COUNTRY     -  US
 DR9394  USGS QUAD   -  BETTERTON (2017)
 DR9394
 DR9394                         *CURRENT SURVEY CONTROL
 DR9394  ______________________________________________________________________
 DR9394* NAD 83(2011) POSITION- 39 22 18.62786(N) 076 03 45.71123(W)   ADJUSTED
 DR9394* NAD 83(2011) ELLIP HT-   -32.151 (meters)        (09/18/23)   ADJUSTED
 DR9394* NAD 83(2011) EPOCH   -  2010.00
 DR9394* NAVD 88 ORTHO HEIGHT -     1.18  (meters)        3.9   (feet) GPS OBS
 DR9394  ______________________________________________________________________
 DR9394  GEOID HEIGHT    -        -33.345 (meters)                     GEOID18
 DR9394  NAD 83(2011) X  -  1,189,178.529 (meters)                     COMP
 DR9394  NAD 83(2011) Y  - -4,791,866.962 (meters)                     COMP
 DR9394  NAD 83(2011) Z  -  4,024,293.802 (meters)                     COMP
 DR9394  LAPLACE CORR    -         -1.16  (seconds)                    DEFLEC18
 DR9394
 DR9394  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9394  Standards:
 DR9394         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9394            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9394  -------------------------------------------------------------------
 DR9394  NETWORK    0.58   1.33           0.26   0.21   0.68     -0.03081646
 DR9394  -------------------------------------------------------------------
 DR9394  Click here for local accuracies and other accuracy information.
 DR9394
 DR9394.The horizontal coordinates were established by GPS observations
 DR9394.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9394
 DR9394.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9394.been affixed to the stable North American tectonic plate. See 
 DR9394.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9394
 DR9394.The horizontal coordinates are valid at the epoch date displayed above
 DR9394.which is a decimal equivalence of Year/Month/Day.
 DR9394
 DR9394.The orthometric height was determined by GPS observations and a
 DR9394.high-resolution geoid model using precise GPS observation and
 DR9394.processing techniques.
 DR9394
 DR9394.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9394.GEOID18 height accuracy estimate available here.
 DR9394
 DR9394.Click photographs - Photos may exist for this station.
 DR9394
 DR9394.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9394
 DR9394.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9394
 DR9394.The ellipsoidal height was determined by GPS observations
 DR9394.and is referenced to NAD 83.
 DR9394
 DR9394. The following values were computed from the NAD 83(2011) position.
 DR9394
 DR9394;                    North         East     Units Scale Factor Converg.
 DR9394;SPC MD       -   189,700.884   480,765.997   MT  0.99998726   +0 35 17.8
 DR9394;SPC MD       -   622,376.98  1,577,313.11   sFT  0.99998726   +0 35 17.8
 DR9394;UTM  18      - 4,358,580.045   408,461.704   MT  0.99970317   -0 40 27.0
 DR9394
 DR9394!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9394!SPC MD       -   1.00000504  x   0.99998726  =   0.99999230
 DR9394!UTM  18      -   1.00000504  x   0.99970317  =   0.99970821
 DR9394
 DR9394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0846158580(NAD 83)
 DR9394
 DR9394                          SUPERSEDED SURVEY CONTROL
 DR9394
 DR9394.No superseded survey control is available for this station.
 DR9394
 DR9394_MARKER: DD = SURVEY DISK
 DR9394_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DR9394_SP_SET: JETTY WITH CONCRETE BLOCKS
 DR9394_STAMPING: BETTERTON AZ 2021
 DR9394_MARK LOGO: MDSHA
 DR9394_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9394_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9394+STABILITY: SURFACE MOTION
 DR9394_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9394+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9394
 DR9394  HISTORY     - Date     Condition        Report By
 DR9394  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9394  HISTORY     - 20250416 GOOD             PROFLN
 DR9394
 DR9394                          STATION DESCRIPTION
 DR9394
 DR9394'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9394'THE MARK IS LOCATED ABOUT 11.2 MI (18.0 KM) NORTH OF CHESTERTOWN, 5.3
 DR9394'MI (8.5 KM) NORTH OF LYNCH, 3.2 MI (5.1 KM) NORTH-NORTHWEST OF STILL
 DR9394'POND AND IN THE TOWN OF BETTERTON, MD.
 DR9394'
 DR9394'TO REACH THE MARK FROM THE INTERSECTION OF BESSICKS CORNER ROAD AND MD
 DR9394'292 ( STILL POND ROAD) PROCEED NORTH ON MD 292 FOR 4.39 KM (2.73 MI)
 DR9394'TO BETTERTON BEACH.  THE MARK IS SOUTH OF THE WOODEN BOARDWALK ON
 DR9394'BETTERTON BEACH.  THE MARK IS LOCATED ON THE CONCRETE BLOCK WALK JETTY
 DR9394'APPROXIMATELY 400 FT (121.9 M) NORTH OF THE END OF MAIN STREET.
 DR9394'
 DR9394'THE MARK IS 23.3 FT (7.1 M) SOUTH OF THE NORTH EDGE OF CONCRETE BLOCK
 DR9394'WALK ON TOP OF JETTY, 4 FT (1.2 M) EAST OF THE WEST EDGE OF CONCRETE
 DR9394'BLOCK WALK ON TOP OF JETTY, 4 FT (1.2 M) WEST OF THE EAST EDGE OF
 DR9394'CONCRETE BLOCK WALK ON TOP OF JETTY AND ABOUT LEVEL WITH THE GROUND.
 DR9394
 DR9394                          STATION RECOVERY (2025)
 DR9394
 DR9394'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9394'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4898 ***********************************************************************
 JV4898  DESIGNATION -  BETTERTON MUN TANK
 JV4898  PID         -  JV4898
 JV4898  STATE/COUNTY-  MD/KENT
 JV4898  COUNTRY     -  US
 JV4898  USGS QUAD   -  BETTERTON (2017)
 JV4898
 JV4898                         *CURRENT SURVEY CONTROL
 JV4898  ______________________________________________________________________
 JV4898* NAD 83(1991) POSITION- 39 21 59.35614(N) 076 03 41.69426(W)   ADJUSTED
 JV4898  ______________________________________________________________________
 JV4898  GEOID HEIGHT    -        -33.343 (meters)                     GEOID18
 JV4898  LAPLACE CORR    -         -1.21  (seconds)                    DEFLEC18
 JV4898  HORZ ORDER      -  THIRD
 JV4898
 JV4898.The horizontal coordinates were established by classical geodetic methods
 JV4898.and adjusted by the National Geodetic Survey in January 1992.
 JV4898
 JV4898.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4898.GEOID18 height accuracy estimate available here.
 JV4898
 JV4898.Click photographs - Photos may exist for this station.
 JV4898
 JV4898.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4898
 JV4898. The following values were computed from the NAD 83(1991) position.
 JV4898
 JV4898;                    North         East     Units Scale Factor Converg.
 JV4898;SPC MD       -   189,107.579   480,868.252   MT  0.99998646   +0 35 20.3
 JV4898;SPC MD       -   620,430.45  1,577,648.59   sFT  0.99998646   +0 35 20.3
 JV4898;UTM  18      - 4,357,984.800   408,550.837   MT  0.99970297   -0 40 24.2
 JV4898
 JV4898_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0855057984(NAD 83)
 JV4898
 JV4898                          SUPERSEDED SURVEY CONTROL
 JV4898
 JV4898  NAD 83(1986)-  39 21 59.34884(N)    076 03 41.70095(W) AD(       ) 3
 JV4898  NAD 27      -  39 21 58.95511(N)    076 03 42.89479(W) AD(       ) 3
 JV4898
 JV4898.Superseded values are not recommended for survey control.
 JV4898
 JV4898.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4898.See file dsdata.pdf to determine how the superseded data were derived.
 JV4898
 JV4898_MARKER: 53 = ELEVATED TANK
 JV4898_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4898+SATELLITE: SATELLITE OBSERVATIONS - January 02, 2004
 JV4898
 JV4898  HISTORY     - Date     Condition        Report By
 JV4898  HISTORY     - 1973     FIRST OBSERVED   NGS
 JV4898  HISTORY     - 19981003 GOOD             USPSQD
 JV4898  HISTORY     - 20011027 GOOD             USPSQD
 JV4898  HISTORY     - 20011228 GOOD             USPSQD
 JV4898  HISTORY     - 20040102 GOOD             USPSQD
 JV4898
 JV4898                          STATION DESCRIPTION
 JV4898
 JV4898'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV4898'THE STATION IS LOCATED ABOUT 1/4 MILE EAST OF THE CHESAPEAK BAY AND
 JV4898'IN THE SMALL SETTLEMENT OF BETTERTON.
 JV4898'
 JV4898'THE STATION IS THE BALL ATOP THE WATER TANK.  THE TANK IS ABOUT
 JV4898'100 FEET HIGH AND PAINTED GREEN IN COLOR.
 JV4898
 JV4898                          STATION RECOVERY (1998)
 JV4898
 JV4898'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV4898'RECOVERED IN GOOD CONDITION.
 JV4898
 JV4898                          STATION RECOVERY (2001)
 JV4898
 JV4898'RECOVERY NOTE BY US POWER SQUADRON 2001 (TC)
 JV4898'WATER TANK IS PAINTED WHITE WITH THE WORD BETTERTON IN BLUE.
 JV4898
 JV4898                          STATION RECOVERY (2001)
 JV4898
 JV4898'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV4898'TANK IS NOW WHITE IN COLOR
 JV4898
 JV4898                          STATION RECOVERY (2004)
 JV4898
 JV4898'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 JV4898'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6541 ***********************************************************************
 HV6541  DESIGNATION -  BETWEEN
 HV6541  PID         -  HV6541
 HV6541  STATE/COUNTY-  MD/ST MARYS
 HV6541  COUNTRY     -  US
 HV6541  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6541
 HV6541                         *CURRENT SURVEY CONTROL
 HV6541  ______________________________________________________________________
 HV6541* NAD 83(1993) POSITION- 38 07 09.76078(N) 076 25 50.83517(W)   ADJUSTED
 HV6541* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6541  ______________________________________________________________________
 HV6541  GEOID HEIGHT    -        -34.866 (meters)                     GEOID18
 HV6541  LAPLACE CORR    -         -6.13  (seconds)                    DEFLEC18
 HV6541  HORZ ORDER      -  THIRD
 HV6541
 HV6541.The horizontal coordinates were established by classical geodetic methods
 HV6541.and adjusted by the National Geodetic Survey in November 1994.
 HV6541
 HV6541.The orthometric height was scaled from a topographic map.
 HV6541
 HV6541.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6541.GEOID18 height accuracy estimate available here.
 HV6541
 HV6541.Click photographs - Photos may exist for this station.
 HV6541
 HV6541.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6541
 HV6541. The following values were computed from the NAD 83(1993) position.
 HV6541
 HV6541;                    North         East     Units Scale Factor Converg.
 HV6541;SPC MD       -    50,409.004   449,915.666   MT  1.00003633   +0 21 26.1
 HV6541;SPC MD       -   165,383.54  1,476,098.31   sFT  1.00003633   +0 21 26.1
 HV6541;SPC VA N     - 2,052,294.761 3,681,431.093   MT  0.99998593   +1 17 29.2
 HV6541;SPC VA N     - 6,733,237.06 12,078,161.84   sFT  0.99998593   +1 17 29.2
 HV6541;SPC VA S     - 1,200,204.966 3,681,440.185   MT  1.00003144   +1 15 21.1
 HV6541;SPC VA S     - 3,937,672.46 12,078,191.67   sFT  1.00003144   +1 15 21.1
 HV6541;UTM  18      - 4,220,027.183   374,581.452   MT  0.99979373   -0 53 00.0
 HV6541
 HV6541!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6541!SPC MD       -   1.00000552  x   1.00003633  =   1.00004185
 HV6541!SPC VA N     -   1.00000552  x   0.99998593  =   0.99999145
 HV6541!SPC VA S     -   1.00000552  x   1.00003144  =   1.00003696
 HV6541!UTM  18      -   1.00000552  x   0.99979373  =   0.99979925
 HV6541
 HV6541:                Primary Azimuth Mark                     Grid Az
 HV6541:SPC MD       -  DAY 1908                                 152 37 39.2
 HV6541:SPC VA N     -  DAY 1908                                 151 41 36.1
 HV6541:SPC VA S     -  DAY 1908                                 151 43 44.2
 HV6541:UTM  18      -  DAY 1908                                 153 52 05.3
 HV6541
 HV6541_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7458120027(NAD 83)
 HV6541
 HV6541|---------------------------------------------------------------------|
 HV6541| PID    Reference Object                     Distance      Geod. Az  |
 HV6541|                                                           dddmmss.s |
 HV6541| CX2098 BETWEEN RM                           14.420 METERS 12338     |
 HV6541| HV6567 DAY 1908                            APPROX. 1.8 KM 1525905.3 |
 HV6541|---------------------------------------------------------------------|
 HV6541
 HV6541                          SUPERSEDED SURVEY CONTROL
 HV6541
 HV6541  NAD 83(1991)-  38 07 09.75968(N)    076 25 50.83813(W) AD(       ) 3
 HV6541  NAD 83(1986)-  38 07 09.76102(N)    076 25 50.85166(W) AD(       ) 3
 HV6541  NAD 27      -  38 07 09.34000(N)    076 25 52.07200(W) AD(       ) 3
 HV6541  USSD        -  38 07 09.72100(N)    076 25 51.78500(W) AD(       ) 3
 HV6541
 HV6541.Superseded values are not recommended for survey control.
 HV6541
 HV6541.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6541.See file dsdata.pdf to determine how the superseded data were derived.
 HV6541
 HV6541_MARKER: N = NAIL
 HV6541_SETTING: 0 = UNSPECIFIED SETTING
 HV6541
 HV6541  HISTORY     - Date     Condition        Report By
 HV6541  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6541  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6541
 HV6541                          STATION DESCRIPTION
 HV6541
 HV6541'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6541'STATION IS ON THE EASTERN SHORE OF ST. MARYS RIVER, ABOUT 1-1/4
 HV6541'MILE NW OF KITTS POINT, THE POINT AT ENTRANCE TO RIVER, IN A
 HV6541'PASTURE ABOUT 3 FEET ABOVE HIGH WATER, 5 YARDS NE OF EDGE OF BANK,
 HV6541'5 YARDS SE OF A RAIL FENCE, 12 YARDS SW OF SHORE OF CREEK, AND 7
 HV6541'TO 10 YARDS W TO NW OF PERSIMMON TREES.
 HV6541'
 HV6541'STATION MARK IS NAIL IN STUB FLUSH WITH SURFACE OF GROUND.
 HV6541'
 HV6541'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6541'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6541'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6541'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK ON TOP OF POST.  IT IS
 HV6541'14.42 METERS (47.3 FEET) FROM STATION S 56 DEG 22
 HV6541'MIN E.  DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 HV6541'FOLLOWS--CHIMNEY OF HOUSE AT EDGE OF WOODS, 2-1/8 MILES, S 63 DEG
 HV6541'44 MIN W.  CHIMNEY OF HOUSE BEYOND MIDDLE OF WOODS, 2-1/4 MILES,
 HV6541'S 69 DEG 15 MIN W.  CHIMNEY OF LARGE HOUSE WITH ELL, 2-3/8 MILES, S 76
 HV6541'DEG 49 MIN W.  CHIMNEY OF 2 1/2-STORY HOUSE, 3-1/8 MILES, N 80 DEG
 HV6541'31 MIN W.  NEAR PEAK OF ROOF OF BRICK HOUSE BETWEEN TWO
 HV6541'CHIMNEYS, 2-3/4 MILES, N 46 DEG 29 MIN W.  NAIL IN BLAZE IN 4-INCH
 HV6541'PERSIMMON TREE, 5.87 METERS (19.26 FEET), N 34 DEG 14 MIN W.
 HV6541'NAIL IN BLAZE IN 4-INCH PERSIMMON TREE, 6.94 METERS (22.77 FEET),
 HV6541'N 06 DEG 33 MIN W.  NAIL IN BLAZE IN 5-INCH PERSIMMON TREE, 9.34
 HV6541'METERS (30.64 FEET), S 80 DEG 34 MIN E.  TALL PINE ON KITTS POINT,
 HV6541'1-1/8 MILES, S 28 DEG 06 MIN E.
 HV6541
 HV6541                          STATION RECOVERY (1958)
 HV6541
 HV6541'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6541'THE STATION IS LOST.  A THOROUGH SEARCH WAS MADE AT THE PLOTTED
 HV6541'POSITION OF THIS STATION.  DUE TO THE NATURE OF THE CENTER MARK
 HV6541'AND THE LOSS OF ALL LOCAL REFERENCES, NEITHER THE STATION NOR ITS
 HV6541'REFERENCE MARK COULD BE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6199 ***********************************************************************
 DN6199  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6199  DESIGNATION -  BETWIXT
 DN6199  PID         -  DN6199
 DN6199  STATE/COUNTY-  MD/CECIL
 DN6199  COUNTRY     -  US
 DN6199  USGS QUAD   -  CECILTON (2016)
 DN6199
 DN6199                         *CURRENT SURVEY CONTROL
 DN6199  ______________________________________________________________________
 DN6199* NAD 83(2011) POSITION- 39 27 04.99422(N) 075 48 03.11564(W)   ADJUSTED
 DN6199* NAD 83(2011) ELLIP HT-   -12.804 (meters)        (06/27/12)   ADJUSTED
 DN6199* NAD 83(2011) EPOCH   -  2010.00
 DN6199* NAVD 88 ORTHO HEIGHT -    20.65  (meters)       67.7   (feet) GPS OBS
 DN6199  ______________________________________________________________________
 DN6199  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6199  GEOID HEIGHT    -        -33.439 (meters)                     GEOID03
 DN6199  GEOID HEIGHT    -        -33.468 (meters)                     GEOID18
 DN6199  NAD 83(2011) X  -  1,209,692.381 (meters)                     COMP
 DN6199  NAD 83(2011) Y  - -4,780,961.411 (meters)                     COMP
 DN6199  NAD 83(2011) Z  -  4,031,129.311 (meters)                     COMP
 DN6199  LAPLACE CORR    -         -1.00  (seconds)                    DEFLEC18
 DN6199
 DN6199  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6199  Standards:
 DN6199         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6199            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6199  -------------------------------------------------------------------
 DN6199  NETWORK    0.61   1.41           0.27   0.22   0.72      0.20433944
 DN6199  -------------------------------------------------------------------
 DN6199  Click here for local accuracies and other accuracy information.
 DN6199
 DN6199.The horizontal coordinates were established by GPS observations
 DN6199.and adjusted by the National Geodetic Survey in June 2012.
 DN6199
 DN6199.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6199.been affixed to the stable North American tectonic plate. See 
 DN6199.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6199
 DN6199.The horizontal coordinates are valid at the epoch date displayed above
 DN6199.which is a decimal equivalence of Year/Month/Day.
 DN6199
 DN6199.The orthometric height was determined by GPS observations and a
 DN6199.high-resolution geoid model using precise GPS observation and
 DN6199.processing techniques.
 DN6199
 DN6199.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6199.GEOID18 height accuracy estimate available here.
 DN6199
 DN6199.Click photographs - Photos may exist for this station.
 DN6199
 DN6199.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6199
 DN6199.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6199
 DN6199.The ellipsoidal height was determined by GPS observations
 DN6199.and is referenced to NAD 83.
 DN6199
 DN6199. The following values were computed from the NAD 83(2011) position.
 DN6199
 DN6199;                    North         East     Units Scale Factor Converg.
 DN6199;SPC MD       -   198,795.558   503,210.532   MT  1.00000024   +0 45 09.4
 DN6199;SPC MD       -   652,215.09  1,650,949.89   sFT  1.00000024   +0 45 09.4
 DN6199;UTM  18      - 4,367,175.476   431,093.999   MT  0.99965846   -0 30 32.1
 DN6199
 DN6199!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6199!SPC MD       -   1.00000201  x   1.00000024  =   1.00000225
 DN6199!UTM  18      -   1.00000201  x   0.99965846  =   0.99966047
 DN6199
 DN6199_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3109367175(NAD 83)
 DN6199
 DN6199                          SUPERSEDED SURVEY CONTROL
 DN6199
 DN6199  NAD 83(2007)-  39 27 04.99428(N)    075 48 03.11630(W) AD(2002.00) 1
 DN6199  ELLIP H (02/23/12)  -12.770  (m)                       GP(2002.00) 4 1
 DN6199
 DN6199.Superseded values are not recommended for survey control.
 DN6199
 DN6199.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6199.See file dsdata.pdf to determine how the superseded data were derived.
 DN6199
 DN6199_MARKER: DD = SURVEY DISK
 DN6199_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6199_STAMPING: BETWIXT 2008
 DN6199_MARK LOGO: MD-015
 DN6199_PROJECTION: FLUSH
 DN6199_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6199_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6199+STABILITY: SURFACE MOTION
 DN6199_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6199+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6199
 DN6199  HISTORY     - Date     Condition        Report By
 DN6199  HISTORY     - 20081204 MONUMENTED       GWS
 DN6199
 DN6199                          STATION DESCRIPTION
 DN6199
 DN6199'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6199'THE STATION IS LOCATED ABOUT 4.80 MI (7.7 KM) NORTHEAST OF CECILTON.
 DN6199'
 DN6199'TO REACH THE STATION FROM THE JUNCTION OF AUGUSTINE HERMAN HIGHWAY
 DN6199'(ROUTE 213) AND CECILTON WARWICK ROAD (ROUTE 282), PROCEED EAST ON
 DN6199'CECILTON WARWICK ROAD FOR 5.39 MI (8.7 KM) TO AN INTERSECTION.  TURN
 DN6199'LEFT AND GO NORTHWEST ON WATER STREET FOR 0.30 MI (0.5 KM) TO A
 DN6199'Y-FORK.  BEAR RIGHT AND GO NORTH ON OLD TELEGRAPH ROAD FOR 1.74 MI
 DN6199'(2.8 KM) TO AN INTERSECTION.  TURN LEFT AND GO EAST ON MIDDLENECK ROAD
 DN6199'FOR 1.40 MI (2.3 KM) TO THE STATION ON THE LEFT.
 DN6199'
 DN6199'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6199'CONCRETE MONUMENT ON THE SOUTH SIDE OF MIDDLENECK ROAD, APPROXIMATELY
 DN6199'607 FT (185.0 M) WEST OF THE DRIVEWAY TO 1151 MIDDLENECK ROAD, 8 FT
 DN6199'(2.4 M) SOUTH OF THE EDGE OF PAVING AND 29.2 FT (8.9 M) WEST OF A
 DN6199'UTILITY POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3169 ***********************************************************************
 DI3169  DESIGNATION -  BEULAH 1
 DI3169  PID         -  DI3169
 DI3169  STATE/COUNTY-  MD/DORCHESTER
 DI3169  COUNTRY     -  US
 DI3169  USGS QUAD   -  PRESTON (2016)
 DI3169
 DI3169                         *CURRENT SURVEY CONTROL
 DI3169  ______________________________________________________________________
 DI3169* NAD 83(2011) POSITION- 38 40 26.85699(N) 075 53 58.31417(W)   ADJUSTED
 DI3169* NAD 83(2011) ELLIP HT-   -25.049 (meters)        (06/27/12)   ADJUSTED
 DI3169* NAD 83(2011) EPOCH   -  2010.00
 DI3169* NAVD 88 ORTHO HEIGHT -    10.1   (meters)       33.    (feet) GPS OBS
 DI3169  ______________________________________________________________________
 DI3169  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3169  GEOID HEIGHT    -        -35.138 (meters)                     GEOID03
 DI3169  GEOID HEIGHT    -        -35.159 (meters)                     GEOID18
 DI3169  NAD 83(2011) X  -  1,214,702.503 (meters)                     COMP
 DI3169  NAD 83(2011) Y  - -4,835,766.091 (meters)                     COMP
 DI3169  NAD 83(2011) Z  -  3,964,122.793 (meters)                     COMP
 DI3169  LAPLACE CORR    -         -3.00  (seconds)                    DEFLEC18
 DI3169
 DI3169  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3169  Standards:
 DI3169         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3169            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3169  -------------------------------------------------------------------
 DI3169  NETWORK    0.68   1.00           0.31   0.24   0.51     -0.01072761
 DI3169  -------------------------------------------------------------------
 DI3169  Click here for local accuracies and other accuracy information.
 DI3169
 DI3169.The horizontal coordinates were established by GPS observations
 DI3169.and adjusted by the National Geodetic Survey in June 2012.
 DI3169
 DI3169.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3169.been affixed to the stable North American tectonic plate. See 
 DI3169.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3169
 DI3169.The horizontal coordinates are valid at the epoch date displayed above
 DI3169.which is a decimal equivalence of Year/Month/Day.
 DI3169
 DI3169.The orthometric height was determined by GPS observations and a
 DI3169.high-resolution geoid model.
 DI3169
 DI3169.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3169.GEOID18 height accuracy estimate available here.
 DI3169
 DI3169.Click photographs - Photos may exist for this station.
 DI3169
 DI3169.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3169
 DI3169.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3169
 DI3169.The ellipsoidal height was determined by GPS observations
 DI3169.and is referenced to NAD 83.
 DI3169
 DI3169. The following values were computed from the NAD 83(2011) position.
 DI3169
 DI3169;                    North         East     Units Scale Factor Converg.
 DI3169;SPC MD       -   112,409.209   495,758.807   MT  0.99995601   +0 41 26.5
 DI3169;SPC MD       -   368,795.88  1,626,502.02   sFT  0.99995601   +0 41 26.5
 DI3169;UTM  18      - 4,280,998.965   421,751.234   MT  0.99967540   -0 33 43.7
 DI3169
 DI3169!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3169!SPC MD       -   1.00000393  x   0.99995601  =   0.99995994
 DI3169!UTM  18      -   1.00000393  x   0.99967540  =   0.99967933
 DI3169
 DI3169_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2175180998(NAD 83)
 DI3169
 DI3169|---------------------------------------------------------------------|
 DI3169| PID    Reference Object                     Distance      Geod. Az  |
 DI3169|                                                           dddmmss.s |
 DI3169| DI3170 BEULAH 2                            357.932 METERS 17927     |
 DI3169|---------------------------------------------------------------------|
 DI3169
 DI3169                          SUPERSEDED SURVEY CONTROL
 DI3169
 DI3169  NAD 83(1991)-  38 40 26.85717(N)    075 53 58.31501(W) AD(       ) 1
 DI3169  ELLIP H (01/05/07)  -25.010  (m)                       GP(       ) 4 2
 DI3169
 DI3169.Superseded values are not recommended for survey control.
 DI3169
 DI3169.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3169.See file dsdata.pdf to determine how the superseded data were derived.
 DI3169
 DI3169_MARKER: DD = SURVEY DISK
 DI3169_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3169_STAMPING: BEULAH 1
 DI3169_MARK LOGO: MD-019
 DI3169_PROJECTION: FLUSH
 DI3169_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3169_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3169+STABILITY: SURFACE MOTION
 DI3169_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3169+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3169
 DI3169  HISTORY     - Date     Condition        Report By
 DI3169  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3169
 DI3169                          STATION DESCRIPTION
 DI3169
 DI3169'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3169'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR PRESTON,
 DI3169'MARYLAND.  IT IS  ABOUT 12.1 MI (19.5 KM) NORTHEAST OF CAMBRIDGE,
 DI3169'MARYLAND, ABOUT 11.3 MI (18.2 KM) SOUTHEAST  OF EASTON, MARYLAND AND
 DI3169'ABOUT 26.8 MI (43.1 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3169'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 328
 DI3169'(EASTON DENTON ROAD/  MATTHEWSTOWN ROAD) PROCEED SOUTHEAST ON US RTE
 DI3169'50 FOR 0.3 MI (0.5 KM) TO THE  INTERSECTION WITH SR 331 (DOVER ROAD/
 DI3169'DOVER BRIDGE ROAD/ MAIN STREET).  TURN LEFT AND  PROCEED SOUTHEAST
 DI3169'11.5 MI (18.5 KM) TO THE INTERSECTION WITH SR 318 (PRESTON
 DI3169'FEDERALSBURG ROAD).  TURN LEFT TO REMAIN ON SR 331 (EAST NEW MARKET
 DI3169'ELWOOD ROAD) AND  PROCEED SOUTH 1.7 MI (2.7 KM) TO THE STATION ON THE
 DI3169'LEFT.
 DI3169'STATION IS 1.6 FT (1.2 M) EAST OF THE BACK OF THE EAST CURB OF SR 331,
 DI3169'97.0 FT (18.7 M)  WEST OF METAL FENCE AND 175.0 FT (28.8 M)  NORTH OF
 DI3169'ENTRANCE TO COUNTY DEPARTMENT OF  PUBLIC WORKS BEULAH LANDFILL.  A 3
 DI3169'IN BRASS DISK STAMPED BEULAH 1 SET IN THE TOP OF A 1 FT  (0.3 M)
 DI3169'CONCRETE MONUMENT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3170 ***********************************************************************
 DI3170  DESIGNATION -  BEULAH 2
 DI3170  PID         -  DI3170
 DI3170  STATE/COUNTY-  MD/DORCHESTER
 DI3170  COUNTRY     -  US
 DI3170  USGS QUAD   -  PRESTON (2016)
 DI3170
 DI3170                         *CURRENT SURVEY CONTROL
 DI3170  ______________________________________________________________________
 DI3170* NAD 83(2011) POSITION- 38 40 15.24987(N) 075 53 58.17358(W)   ADJUSTED
 DI3170* NAD 83(2011) ELLIP HT-   -22.134 (meters)        (06/27/12)   ADJUSTED
 DI3170* NAD 83(2011) EPOCH   -  2010.00
 DI3170* NAVD 88 ORTHO HEIGHT -    13.0   (meters)       43.    (feet) GPS OBS
 DI3170  ______________________________________________________________________
 DI3170  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3170  GEOID HEIGHT    -        -35.142 (meters)                     GEOID03
 DI3170  GEOID HEIGHT    -        -35.164 (meters)                     GEOID18
 DI3170  NAD 83(2011) X  -  1,214,760.840 (meters)                     COMP
 DI3170  NAD 83(2011) Y  - -4,835,984.381 (meters)                     COMP
 DI3170  NAD 83(2011) Z  -  3,963,845.179 (meters)                     COMP
 DI3170  LAPLACE CORR    -         -2.98  (seconds)                    DEFLEC18
 DI3170
 DI3170  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3170  Standards:
 DI3170         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3170            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3170  -------------------------------------------------------------------
 DI3170  NETWORK    0.68   1.00           0.31   0.24   0.51     -0.01107541
 DI3170  -------------------------------------------------------------------
 DI3170  Click here for local accuracies and other accuracy information.
 DI3170
 DI3170.The horizontal coordinates were established by GPS observations
 DI3170.and adjusted by the National Geodetic Survey in June 2012.
 DI3170
 DI3170.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3170.been affixed to the stable North American tectonic plate. See 
 DI3170.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3170
 DI3170.The horizontal coordinates are valid at the epoch date displayed above
 DI3170.which is a decimal equivalence of Year/Month/Day.
 DI3170
 DI3170.The orthometric height was determined by GPS observations and a
 DI3170.high-resolution geoid model.
 DI3170
 DI3170.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3170.GEOID18 height accuracy estimate available here.
 DI3170
 DI3170.Click photographs - Photos may exist for this station.
 DI3170
 DI3170.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3170
 DI3170.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3170
 DI3170.The ellipsoidal height was determined by GPS observations
 DI3170.and is referenced to NAD 83.
 DI3170
 DI3170. The following values were computed from the NAD 83(2011) position.
 DI3170
 DI3170;                    North         East     Units Scale Factor Converg.
 DI3170;SPC MD       -   112,051.376   495,766.520   MT  0.99995621   +0 41 26.6
 DI3170;SPC MD       -   367,621.89  1,626,527.32   sFT  0.99995621   +0 41 26.6
 DI3170;UTM  18      - 4,280,641.149   421,751.121   MT  0.99967540   -0 33 43.5
 DI3170
 DI3170!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3170!SPC MD       -   1.00000347  x   0.99995621  =   0.99995968
 DI3170!UTM  18      -   1.00000347  x   0.99967540  =   0.99967887
 DI3170
 DI3170_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2175180641(NAD 83)
 DI3170
 DI3170|---------------------------------------------------------------------|
 DI3170| PID    Reference Object                     Distance      Geod. Az  |
 DI3170|                                                           dddmmss.s |
 DI3170| DI3169 BEULAH 1                            357.932 METERS 35927     |
 DI3170|---------------------------------------------------------------------|
 DI3170
 DI3170                          SUPERSEDED SURVEY CONTROL
 DI3170
 DI3170  NAD 83(1991)-  38 40 15.25004(N)    075 53 58.17443(W) AD(       ) 1
 DI3170  ELLIP H (01/05/07)  -22.094  (m)                       GP(       ) 4 2
 DI3170
 DI3170.Superseded values are not recommended for survey control.
 DI3170
 DI3170.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3170.See file dsdata.pdf to determine how the superseded data were derived.
 DI3170
 DI3170_MARKER: DD = SURVEY DISK
 DI3170_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3170_STAMPING: BEULAH 2
 DI3170_MARK LOGO: MD-019
 DI3170_PROJECTION: FLUSH
 DI3170_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3170_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3170+STABILITY: SURFACE MOTION
 DI3170_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3170+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3170
 DI3170  HISTORY     - Date     Condition        Report By
 DI3170  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3170
 DI3170                          STATION DESCRIPTION
 DI3170
 DI3170'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3170'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR PRESTON,
 DI3170'MARYLAND.  IT IS  ABOUT 12.1 MI (19.5 KM) NORTHEAST OF CAMBRIDGE,
 DI3170'MARYLAND, ABOUT 11.5 MI (18.5 KM) SOUTHEAST  OF EASTON, MARYLAND AND
 DI3170'ABOUT 26.7 MI (43.0 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3170'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 328
 DI3170'(EASTON DENTON ROAD/  MATTHEWSTOWN ROAD) PROCEED SOUTHEAST ON US RTE
 DI3170'50 FOR 0.3 MI (0.5 KM) TO THE  INTERSECTION WITH SR 331 (DOVER ROAD/
 DI3170'DOVER BRIDGE ROAD/ MAIN STREET).  TURN LEFT AND  PROCEED SOUTHEAST
 DI3170'11.5 MI (18.5 KM) TO THE INTERSECTION WITH SR 318 (PRESTON
 DI3170'FEDERALSBURG ROAD).  TURN LEFT TO REMAIN ON SR 331 (EAST NEW MARKET
 DI3170'ELWOOD ROAD) AND  PROCEED SOUTH 2.0 MI (3.2 KM) TO THE STATION ON THE
 DI3170'RIGHT.
 DI3170'STATION IS 19.0 FT (5.8 M) WEST OF WEST EDGE OF SR 331, 81.0 FT (24.7
 DI3170'M) NORTH OF ELECTRIC POLE  CP 533 AND 91.0 FT (27.7 M)  SOUTH OF
 DI3170'ELECTRIC POLE CP 532.  A 3 IN BRASS DISK STAMPED BEULAH 2  SET IN THE
 DI3170'TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5757 ***********************************************************************
 JV5757  DESIGNATION -  BIG
 JV5757  PID         -  JV5757
 JV5757  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5757  COUNTRY     -  US
 JV5757  USGS QUAD   -  ROUND BAY (2016)
 JV5757
 JV5757                         *CURRENT SURVEY CONTROL
 JV5757  ______________________________________________________________________
 JV5757* NAD 83(1991) POSITION- 39 04 10.38041(N) 076 30 55.14399(W)   ADJUSTED
 JV5757* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5757  ______________________________________________________________________
 JV5757  GEOID HEIGHT    -        -33.164 (meters)                     GEOID18
 JV5757  LAPLACE CORR    -         -3.78  (seconds)                    DEFLEC18
 JV5757  HORZ ORDER      -  THIRD
 JV5757
 JV5757.The horizontal coordinates were established by classical geodetic methods
 JV5757.and adjusted by the National Geodetic Survey in January 1992.
 JV5757
 JV5757.The orthometric height was scaled from a topographic map.
 JV5757
 JV5757.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5757.GEOID18 height accuracy estimate available here.
 JV5757
 JV5757.Click photographs - Photos may exist for this station.
 JV5757
 JV5757.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5757
 JV5757. The following values were computed from the NAD 83(1991) position.
 JV5757
 JV5757;                    North         East     Units Scale Factor Converg.
 JV5757;SPC MD       -   155,838.382   441,943.081   MT  0.99995555   +0 18 15.1
 JV5757;SPC MD       -   511,279.76  1,449,941.59   sFT  0.99995555   +0 18 15.1
 JV5757;UTM  18      - 4,325,587.364   368,911.355   MT  0.99981159   -0 57 18.7
 JV5757
 JV5757!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5757!SPC MD       -   1.00000508  x   0.99995555  =   0.99996063
 JV5757!UTM  18      -   1.00000508  x   0.99981159  =   0.99981667
 JV5757
 JV5757:                Primary Azimuth Mark                     Grid Az
 JV5757:SPC MD       -  DEL                                      351 17 02.7
 JV5757:UTM  18      -  DEL                                      352 32 36.5
 JV5757
 JV5757_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6891125587(NAD 83)
 JV5757
 JV5757|---------------------------------------------------------------------|
 JV5757| PID    Reference Object                     Distance      Geod. Az  |
 JV5757|                                                           dddmmss.s |
 JV5757| CA9966 BIG RM                                9.020 METERS 28934     |
 JV5757| JV5777 DEL                                 APPROX. 1.3 KM 3513517.8 |
 JV5757|---------------------------------------------------------------------|
 JV5757
 JV5757                          SUPERSEDED SURVEY CONTROL
 JV5757
 JV5757  NAD 83(1986)-  39 04 10.37656(N)    076 30 55.15441(W) AD(       ) 3
 JV5757  NAD 27      -  39 04 09.97800(N)    076 30 56.29400(W) AD(       ) 3
 JV5757
 JV5757.Superseded values are not recommended for survey control.
 JV5757
 JV5757.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5757.See file dsdata.pdf to determine how the superseded data were derived.
 JV5757
 JV5757_MARKER: DS = TRIANGULATION STATION DISK
 JV5757_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5757
 JV5757  HISTORY     - Date     Condition        Report By
 JV5757  HISTORY     - 1933     MONUMENTED       CGS
 JV5757  HISTORY     - 1961     GOOD             CGS
 JV5757
 JV5757                          STATION DESCRIPTION
 JV5757
 JV5757'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5757'STATION IS ON THE S SHORE OF THE MAGOTHY RIVER, ON THE W SIDE
 JV5757'OF THE MOUTH OF DIVIDING CREEK, ON A LOW SANDY POINT, 1 FOOT
 JV5757'ABOVE AND ABOUT 30 FEET N AND S FROM HIGH-WATER MARK, IN THE FRONT
 JV5757'YARD OF THE CLAN, A COTTAGE OWNED BY A CLUB OF DOCTORS,
 JV5757'DR. LOMAS, PRESIDENT, 18.75 METERS (61.5 FEET) SE OF THE END OF
 JV5757'A 2-FOOT CONCRETE WALK.  THERE IS A STONE RIP RAP WALL ALONG
 JV5757'THE NE SIDE OF THE POINT.
 JV5757'
 JV5757'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5757'CONCRETE.
 JV5757'
 JV5757'STATION AND REFERENCE MARKS ARE SET FLUSH WITH THE SURFACE OF
 JV5757'THE GROUND.
 JV5757'
 JV5757'REFERENCE MARK IS 4.0 FEET SW OF AN 18-INCH CEDAR TREE.
 JV5757'
 JV5757'DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 JV5757'REFERENCE ARE AS FOLLOWS--SE CORNER OF PORCH 2-STORY HOUSE
 JV5757'THE CLAN, 32.1 METERS (105.3 FEET), S 48 DEG E.  18-INCH
 JV5757'POPLAR TREE, 4.25 METERS (14.0 FEET), S 26 DEG E.  OUTER
 JV5757'EDGE OF STONE RIP RAP SEA WALL, 7.0 METERS (23 FEET), S 75 DEG W.
 JV5757
 JV5757                          STATION RECOVERY (1961)
 JV5757
 JV5757'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5757'STATION RECOVERED IN GOOD CONDITION.  THE STATION IS STAMPED BIG
 JV5757'1933.  RM WAS NOT FOUND.  LAND IS NOW OWNED BY MR. HOWARD.  PREVIOUS
 JV5757'DESCRIPTION BY J.A.B. IN 1933 IS COMPLETE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1515 ***********************************************************************
 JW1515  DESIGNATION -  BIG SAVAGE MTN CUMBER MFG MAST
 JW1515  PID         -  JW1515
 JW1515  STATE/COUNTY-  MD/GARRETT
 JW1515  COUNTRY     -  US
 JW1515  USGS QUAD   -  FROSTBURG (2016)
 JW1515
 JW1515                         *CURRENT SURVEY CONTROL
 JW1515  ______________________________________________________________________
 JW1515* NAD 83(1995) POSITION- 39 40 35.99161(N) 078 57 36.70106(W)   ADJUSTED
 JW1515* NAVD 88 ORTHO HEIGHT -   879.    (meters)     2884.    (feet) SCALED
 JW1515  ______________________________________________________________________
 JW1515  GEOID HEIGHT    -        -31.916 (meters)                     GEOID18
 JW1515  LAPLACE CORR    -         -6.19  (seconds)                    DEFLEC18
 JW1515  HORZ ORDER      -  THIRD
 JW1515
 JW1515.The horizontal coordinates were established by classical geodetic methods
 JW1515.and adjusted by the National Geodetic Survey in April 1998.
 JW1515
 JW1515.The orthometric height was scaled from a topographic map.
 JW1515
 JW1515.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1515.GEOID18 height accuracy estimate available here.
 JW1515
 JW1515.Click photographs - Photos may exist for this station.
 JW1515
 JW1515.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1515
 JW1515. The following values were computed from the NAD 83(1995) position.
 JW1515
 JW1515;                    North         East     Units Scale Factor Converg.
 JW1515;SPC MD       -   224,935.506   231,829.517   MT  1.00004752   -1 13 49.0
 JW1515;SPC MD       -   737,975.91    760,594.01   sFT  1.00004752   -1 13 49.0
 JW1515;SPC PA S     -    38,833.478   496,169.083   MT  1.00005004   -0 47 06.6
 JW1515;SPC PA S     -   127,406.17  1,627,848.07   sFT  1.00005004   -0 47 06.6
 JW1515;UTM  17      - 4,393,859.794   674,942.527   MT  0.99997680   +1 18 09.5
 JW1515
 JW1515!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1515!SPC MD       -   0.99986714  x   1.00004752  =   0.99991465
 JW1515!SPC PA S     -   0.99986714  x   1.00005004  =   0.99991717
 JW1515!UTM  17      -   0.99986714  x   0.99997680  =   0.99984394
 JW1515
 JW1515_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD7494293859(NAD 83)
 JW1515
 JW1515                          SUPERSEDED SURVEY CONTROL
 JW1515
 JW1515  NAD 83(1991)-  39 40 35.99100(N)    078 57 36.70480(W) AD(       ) 3
 JW1515  NAD 83(1986)-  39 40 35.99600(N)    078 57 36.70908(W) AD(       ) 3
 JW1515  NAD 27      -  39 40 35.69000(N)    078 57 37.63000(W) AD(       ) 3
 JW1515
 JW1515.Superseded values are not recommended for survey control.
 JW1515
 JW1515.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1515.See file dsdata.pdf to determine how the superseded data were derived.
 JW1515
 JW1515_MARKER: 42 = RADIO/TV MAST
 JW1515_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1515+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2009
 JW1515
 JW1515  HISTORY     - Date     Condition        Report By
 JW1515  HISTORY     - 1955     FIRST OBSERVED   CGS
 JW1515  HISTORY     - 1957     GOOD             CGS
 JW1515  HISTORY     - 20090321 GOOD             GEOCAC
 JW1515
 JW1515                          STATION DESCRIPTION
 JW1515
 JW1515'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1515'THE STATION IS LOCATED ON BIG SAVAGE MOUNTAIN, ABOUT 2-1/2 MILES
 JW1515'NORTHWEST OF FROSTBURG AND 0.2 MILE NORTHEAST OF U.S. HIGHWAY
 JW1515'40.  IT IS A 3-LEGGED STRUCTURAL STEEL MAST, ABOUT 150 FEET HIGH,
 JW1515'WITH A SLENDER ROD AT THE TOP.  A TRAVERSE WAS MADE FROM
 JW1515'TRIANGULATION STATION SAVAGE AND THE DISTANCE WAS FOUND TO BE
 JW1515'118.55 FEET AND/OR 36.134 METERS.  THE POINT OBSERVED WAS THE
 JW1515'CENTER OF THE BASE OF THE MAST.
 JW1515
 JW1515                          STATION RECOVERY (1957)
 JW1515
 JW1515'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCL)
 JW1515'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.  AN IRON
 JW1515'POLE WITH STEPS WELDED ON IT AND A SMALL ANTENNA IS WEST OF THE
 JW1515'TOWER.
 JW1515
 JW1515                          STATION RECOVERY (2009)
 JW1515
 JW1515'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 JW1515'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4751 ***********************************************************************
 JV4751  DESIGNATION -  BIG SPRING
 JV4751  PID         -  JV4751
 JV4751  STATE/COUNTY-  MD/WASHINGTON
 JV4751  COUNTRY     -  US
 JV4751  USGS QUAD   -  CLEAR SPRING (2016)
 JV4751
 JV4751                         *CURRENT SURVEY CONTROL
 JV4751  ______________________________________________________________________
 JV4751* NAD 83(1991) POSITION- 39 37 50.32425(N) 077 55 28.40280(W)   ADJUSTED
 JV4751* NAVD 88 ORTHO HEIGHT -   147.    (meters)      482.    (feet) SCALED
 JV4751  ______________________________________________________________________
 JV4751  GEOID HEIGHT    -        -34.299 (meters)                     GEOID18
 JV4751  LAPLACE CORR    -         -0.82  (seconds)                    DEFLEC18
 JV4751  HORZ ORDER      -  SECOND
 JV4751
 JV4751.The horizontal coordinates were established by classical geodetic methods
 JV4751.and adjusted by the National Geodetic Survey in January 1992.
 JV4751
 JV4751.The orthometric height was scaled from a topographic map.
 JV4751
 JV4751.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4751.GEOID18 height accuracy estimate available here.
 JV4751
 JV4751.Click photographs - Photos may exist for this station.
 JV4751
 JV4751.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4751
 JV4751. The following values were computed from the NAD 83(1991) position.
 JV4751
 JV4751;                    North         East     Units Scale Factor Converg.
 JV4751;SPC MD       -   218,422.296   320,623.288   MT  1.00003660   -0 34 49.0
 JV4751;SPC MD       -   716,607.15  1,051,911.57   sFT  1.00003660   -0 34 49.0
 JV4751;SPC PA S     -    33,027.195   585,013.055   MT  1.00006111   -0 06 47.7
 JV4751;SPC PA S     -   108,356.72  1,919,330.33   sFT  1.00006111   -0 06 47.7
 JV4751;SPC WV N     -   126,706.989   735,240.304   MT  0.99994074   +1 00 17.2
 JV4751;SPC WV N     -   415,704.51  2,412,200.90   sFT  0.99994074   +1 00 17.2
 JV4751;UTM  18      - 4,390,851.676   249,000.406   MT  1.00037572   -1 51 58.9
 JV4751;UTM  17      - 4,391,284.639   763,951.757   MT  1.00045785   +1 57 45.9
 JV4751
 JV4751!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4751!SPC MD       -   0.99998235  x   1.00003660  =   1.00001895
 JV4751!SPC PA S     -   0.99998235  x   1.00006111  =   1.00004346
 JV4751!SPC WV N     -   0.99998235  x   0.99994074  =   0.99992309
 JV4751!UTM  18      -   0.99998235  x   1.00037572  =   1.00035806
 JV4751!UTM  17      -   0.99998235  x   1.00045785  =   1.00044019
 JV4751
 JV4751:                Primary Azimuth Mark                     Grid Az
 JV4751:SPC MD       -  BIG SPRING AZ MK                         076 40 44.0
 JV4751:SPC PA S     -  BIG SPRING AZ MK                         076 12 42.7
 JV4751:SPC WV N     -  BIG SPRING AZ MK                         075 05 37.8
 JV4751:UTM  18      -  BIG SPRING AZ MK                         077 57 53.9
 JV4751:UTM  17      -  BIG SPRING AZ MK                         074 08 09.1
 JV4751
 JV4751_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ4900090851(NAD 83)
 JV4751
 JV4751|---------------------------------------------------------------------|
 JV4751| PID    Reference Object                     Distance      Geod. Az  |
 JV4751|                                                           dddmmss.s |
 JV4751| CK6651 BIG SPRING RM 1                       8.110 METERS 07314     |
 JV4751| CK6650 BIG SPRING AZ MK                                   0760555.0 |
 JV4751| CK6652 BIG SPRING RM 2                      11.972 METERS 31808     |
 JV4751| JV4755 CLEAR SPRING ST PETERS E L CH       APPROX. 2.7 KM 3474027.1 |
 JV4751| JV4756 CLEAR SPRING ST JOHNS REF CH        APPROX. 2.9 KM 3541107.3 |
 JV4751|---------------------------------------------------------------------|
 JV4751
 JV4751                          SUPERSEDED SURVEY CONTROL
 JV4751
 JV4751  NAD 83(1986)-  39 37 50.32370(N)    077 55 28.41119(W) AD(       ) 2
 JV4751  NAD 27      -  39 37 49.97900(N)    077 55 29.42100(W) AD(       ) 2
 JV4751
 JV4751.Superseded values are not recommended for survey control.
 JV4751
 JV4751.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4751.See file dsdata.pdf to determine how the superseded data were derived.
 JV4751
 JV4751_MARKER: DS = TRIANGULATION STATION DISK
 JV4751_SETTING: 66 = SET IN ROCK OUTCROP
 JV4751_STAMPING: BIG SPRING 1955
 JV4751_MARK LOGO: CGS
 JV4751_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4751+STABILITY: POSITION/ELEVATION WELL
 JV4751
 JV4751  HISTORY     - Date     Condition        Report By
 JV4751  HISTORY     - 1955     MONUMENTED       CGS
 JV4751
 JV4751                          STATION DESCRIPTION
 JV4751
 JV4751'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4751'THE STATION IS ABOUT 2 MILES SOUTH OF CLEAR SPRING, 1 MILE EAST
 JV4751'OF BIG SPRING AND 0.1 MILE NORTH OF THE WESTERN MARYLAND
 JV4751'RAILROAD TRACKS.  IT IS 62.4 FEET NORTHWEST OF A FENCE CORNER.
 JV4751'
 JV4751'TO REACH THE STATION FROM THE JUNCTION OF THE FORT FREDERICK
 JV4751'ROAD AND U.S. HIGHWAY 40 IN CLEAR SPRING, GO SOUTH ON THE FORT
 JV4751'FREDERICK ROAD FOR 0.6 MILES TO A Y-JUNCTION, BEAR RIGHT AND
 JV4751'CONTINUE SOUTHERLY FOR 1.2 MILES TO A SIDE ROAD LEADING EAST,
 JV4751'TURN LEFT AND GO EAST 0.9 MILE TO A PRIVATE ROAD LEADING SOUTH,
 JV4751'TURN RIGHT AND GO SOUTH ON THE PRIVATE ROAD FOR 0.15 MILE TO THE
 JV4751'AZIMUTH MARK ON THE LEFT, CONTINUE SOUTH 0.05 MILE TO A CATTLE
 JV4751'GUARD AND A FARM ROAD LEADING WEST, TURN RIGHT AND GO WEST 0.2
 JV4751'MILE TO THE STATION ON THE RIGHT.
 JV4751'
 JV4751'THE STATION MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED BIG
 JV4751'SPRING 1955.
 JV4751'
 JV4751'REFERENCE MARK 1 IS 62 FEET NORTH OF THE FENCE CORNER.  THE
 JV4751'MARK PROJECTS 8 INCHES, AND THE DISK IS STAMPED BIG SPRING NO 1
 JV4751'1955.
 JV4751'
 JV4751'REFERENCE MARK 2 IS 102 FEET NORTHWEST OF THE FENCE CORNER.  THE
 JV4751'MARK PROJECTS 6 INCHES, AND THE DISK IS STAMPED BIG SPRING NO 2
 JV4751'1955.
 JV4751'
 JV4751'THE AZIMUTH MARK IS ABOUT 100 YARDS NORTHWEST OF A FARMHOUSE,
 JV4751'ABOUT 170 FEET EAST OF THE PRIVATE ROAD AND 3 FEET EAST OF A 4
 JV4751'IN X 4 IN WHITE WITNESS POST.  THE MARK PROJECTS 4 FEET, AND
 JV4751'THE DISK IS STAMPED BIG SPRING 1955.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6491 ***********************************************************************
 HV6491  DESIGNATION -  BIG THOROFARE RIVER W LIGHT 1
 HV6491  PID         -  HV6491
 HV6491  STATE/COUNTY-  MD/SOMERSET
 HV6491  COUNTRY     -  US
 HV6491  USGS QUAD   -  KEDGES STRAITS (2016)
 HV6491
 HV6491                         *CURRENT SURVEY CONTROL
 HV6491  ______________________________________________________________________
 HV6491* NAD 83(1993) POSITION- 38 00 00.53848(N) 076 03 20.91410(W)   ADJUSTED
 HV6491  ______________________________________________________________________
 HV6491  GEOID HEIGHT    -        -35.908 (meters)                     GEOID18
 HV6491  LAPLACE CORR    -         -1.85  (seconds)                    DEFLEC18
 HV6491  HORZ ORDER      -  THIRD
 HV6491
 HV6491.The horizontal coordinates were established by classical geodetic methods
 HV6491.and adjusted by the National Geodetic Survey in November 1994.
 HV6491
 HV6491.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6491.GEOID18 height accuracy estimate available here.
 HV6491
 HV6491.Click photographs - Photos may exist for this station.
 HV6491
 HV6491.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6491
 HV6491. The following values were computed from the NAD 83(1993) position.
 HV6491
 HV6491;                    North         East     Units Scale Factor Converg.
 HV6491;SPC MD       -    37,447.540   482,934.377   MT  1.00006568   +0 35 33.4
 HV6491;SPC MD       -   122,859.14  1,584,427.20   sFT  1.00006568   +0 35 33.4
 HV6491;SPC VA S     - 1,187,761.071 3,714,656.198   MT  1.00000628   +1 29 00.4
 HV6491;SPC VA S     - 3,896,846.11 12,187,167.88   sFT  1.00000628   +1 29 00.4
 HV6491;UTM  18      - 4,206,357.483   407,301.655   MT  0.99970583   -0 39 00.3
 HV6491
 HV6491_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0730106357(NAD 83)
 HV6491
 HV6491                          SUPERSEDED SURVEY CONTROL
 HV6491
 HV6491  NAD 83(1991)-  38 00 00.53767(N)    076 03 20.91774(W) AD(       ) 3
 HV6491  NAD 83(1986)-  38 00 00.53794(N)    076 03 20.93524(W) AD(       ) 3
 HV6491  NAD 27      -  38 00 00.09600(N)    076 03 22.17200(W) AD(       ) 3
 HV6491
 HV6491.Superseded values are not recommended for survey control.
 HV6491
 HV6491.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6491.See file dsdata.pdf to determine how the superseded data were derived.
 HV6491
 HV6491_MARKER: 14 = NAVIGATION LIGHT
 HV6491_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6491+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2005
 HV6491
 HV6491  HISTORY     - Date     Condition        Report By
 HV6491  HISTORY     - 1942     FIRST OBSERVED   CGS
 HV6491  HISTORY     - 1951     GOOD             CGS
 HV6491  HISTORY     - 20050720 GOOD             USPSQD
 HV6491
 HV6491                          STATION DESCRIPTION
 HV6491
 HV6491'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6491'LOCATED ON THE N SIDE OF THE W ENTRANCE TO BIG THOROFARE RIVER,
 HV6491'SMITH ISLAND.
 HV6491
 HV6491                          STATION RECOVERY (1951)
 HV6491
 HV6491'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951 (JB)
 HV6491'STATION IS LOCATED AT THE N ENTRANCE TO THE CHANNEL OF BIG
 HV6491'THOROFARE RIVER W ON THE W SIDE OF SMITH ISLAND.  THE STATION IS
 HV6491'A BLACK STEEL PILE WITH A CAGE WORK AT THE TOP.
 HV6491
 HV6491                          STATION RECOVERY (2005)
 HV6491
 HV6491'RECOVERY NOTE BY US POWER SQUADRON 2005 (EEC)
 HV6491'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5718 ***********************************************************************
 HV5718  DESIGNATION -  BIGELOW
 HV5718  PID         -  HV5718
 HV5718  STATE/COUNTY-  MD/TALBOT
 HV5718  COUNTRY     -  US
 HV5718  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5718
 HV5718                         *CURRENT SURVEY CONTROL
 HV5718  ______________________________________________________________________
 HV5718* NAD 83(1991) POSITION- 38 47 23.63736(N) 076 11 10.40747(W)   ADJUSTED
 HV5718* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV5718  ______________________________________________________________________
 HV5718  GEOID HEIGHT    -        -34.413 (meters)                     GEOID18
 HV5718  LAPLACE CORR    -         -4.43  (seconds)                    DEFLEC18
 HV5718  HORZ ORDER      -  SECOND
 HV5718
 HV5718.The horizontal coordinates were established by classical geodetic methods
 HV5718.and adjusted by the National Geodetic Survey in January 1992.
 HV5718
 HV5718.The orthometric height was scaled from a topographic map.
 HV5718
 HV5718.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5718.GEOID18 height accuracy estimate available here.
 HV5718
 HV5718.Click photographs - Photos may exist for this station.
 HV5718
 HV5718.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5718
 HV5718. The following values were computed from the NAD 83(1991) position.
 HV5718
 HV5718;                    North         East     Units Scale Factor Converg.
 HV5718;SPC MD       -   124,998.465   470,698.064   MT  0.99995097   +0 30 38.7
 HV5718;SPC MD       -   410,099.13  1,544,281.90   sFT  0.99995097   +0 30 38.7
 HV5718;UTM  18      - 4,294,130.053   396,978.075   MT  0.99973069   -0 44 35.5
 HV5718
 HV5718!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5718!SPC MD       -   1.00000497  x   0.99995097  =   0.99995594
 HV5718!UTM  18      -   1.00000497  x   0.99973069  =   0.99973565
 HV5718
 HV5718:                Primary Azimuth Mark                     Grid Az
 HV5718:SPC MD       -  BIGELOW RM 3                             147 08 32.8
 HV5718:UTM  18      -  BIGELOW RM 3                             148 23 47.0
 HV5718
 HV5718_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9697894130(NAD 83)
 HV5718
 HV5718|---------------------------------------------------------------------|
 HV5718| PID    Reference Object                     Distance      Geod. Az  |
 HV5718|                                                           dddmmss.s |
 HV5718| CX2100 BIGELOW RM 1                         26.954 METERS 02547     |
 HV5718| CX2099 BIGELOW RM 3                                       1473911.5 |
 HV5718| CX2101 BIGELOW RM 2                         35.314 METERS 26338     |
 HV5718| HV5671 ST MICHAELS WATER TANK              APPROX. 3.5 KM 2641703.5 |
 HV5718|---------------------------------------------------------------------|
 HV5718
 HV5718                          SUPERSEDED SURVEY CONTROL
 HV5718
 HV5718  NAD 83(1986)-  38 47 23.63293(N)    076 11 10.42136(W) AD(       ) 2
 HV5718  NAD 27      -  38 47 23.20800(N)    076 11 11.61300(W) AD(       ) 2
 HV5718
 HV5718.Superseded values are not recommended for survey control.
 HV5718
 HV5718.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5718.See file dsdata.pdf to determine how the superseded data were derived.
 HV5718
 HV5718_MARKER: DS = TRIANGULATION STATION DISK
 HV5718_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5718_STAMPING: BIGELOW 1934
 HV5718_MARK LOGO: CGS
 HV5718_PROJECTION: PROJECTING 15 CENTIMETERS
 HV5718_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5718+STABILITY: SURFACE MOTION
 HV5718
 HV5718  HISTORY     - Date     Condition        Report By
 HV5718  HISTORY     - 1934     MONUMENTED       CGS
 HV5718  HISTORY     - 1961     GOOD             CGS
 HV5718
 HV5718                          STATION DESCRIPTION
 HV5718
 HV5718'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV5718'STATION IS ABOUT 6 MILES AIRLINE W OF EASTON, ABOUT 2 MILES
 HV5718'AIRLINE E OF ST. MICHAELS, ON A PENINSULA BETWEEN LEADS CREEK AND
 HV5718'HUNTING CREEK, ABOUT 200 YARDS NE OF BANK OF MILES RIVER, ON LAND
 HV5718'OWNED BY MRS. J.W. BIGELOW.  STATION IS 18 INCHES W OF FENCE
 HV5718'LINE, 50 FEET S OF GATE ENTRANCE TO FIELD, 200 YARDS SW OF MRS.
 HV5718'BIGELOWS HOUSE BETWEEN THIRD AND FOURTH FENCE POSTS S OF GATE.
 HV5718'MARK PROJECTS 4 INCHES ABOVE SURFACE OF GROUND.
 HV5718'
 HV5718'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HV5718'BRONZE DISKS SET IN CONCRETE.
 HV5718'
 HV5718'REFERENCE MARK NO.1 IS 1 FOOT S OF FENCE LINE, 10 FEET NW OF
 HV5718'CENTER LINE OF LANE AT FIFTH IRON FENCE POST E OF GATE ON NW SIDE
 HV5718'OF LANE.  MARK PROJECTS 4 INCHES ABOVE SURFACE OF GROUND.
 HV5718'
 HV5718'REFERENCE MARK NO.2 IS 1 FOOT S OF FENCE LINE BETWEEN EIGHTH AND
 HV5718'NINTH IRON FENCE POST W OF GATE.  MARK PROJECTS 4 INCHES ABOVE
 HV5718'SURFACE OF GROUND.
 HV5718'
 HV5718'REFERENCE MARK NO.3 IS S OF STATION, 10 FEET W OF CENTER LINE OF
 HV5718'FARM ROAD LEADING S FROM STATION, 18 INCHES W OF W GATE POST. MARK
 HV5718'PROJECTS 4 INCHES ABOVE SURFACE OF GROUND AND IS VISIBLE FROM
 HV5718'GROUND AT STATION.
 HV5718'
 HV5718'TO REACH FROM COURTHOUSE IN EASTON, GO N ONE BLOCK TO
 HV5718'INTERSECTION OF U.S. HIGHWAY 213 AND STATE HIGHWAY 17, TURN W ON
 HV5718'STATE HIGHWAY 17 AND GO 2.3 MILES TO CROSSROADS AT SIGN TUNIS
 HV5718'MILLS 4 MILES, TURN RIGHT ON THIS MACADAM ROAD, GO 1.5 MILES,
 HV5718'CROSSING MILES RIVER BRIDGE, TO A GRAVEL ROAD TO THE LEFT, TURN
 HV5718'LEFT AND GO 0.4 MILE TO FORK.  HERE TAKE RIGHT FORK AND GO 1.8
 HV5718'MILES TO ANOTHER FORK AND SIGN TIMBERLANE 1/2 MILE, TAKE LEFT FORK
 HV5718'FOR 0.4 MILE TO ANOTHER FORK, TAKE LEFT FORK AGAIN AND GO 0.5
 HV5718'MILE TO A FOUR-FORK INTERSECTION AND TWO BRICK GATEWAYS, CONTINUE
 HV5718'STRAIGHT AHEAD THROUGH LEFT BRICK GATE WITH SIGN MARENGO AND GO
 HV5718'DOWN GRASSY DRIVEWAY LINED WITH TREES, FOR 0.4 MILE TO CROSSROADS
 HV5718'AND GATE TO LEFT INTO A GRASSY FIELD, GO THROUGH GATE THEN TURN W
 HV5718'ALONG LANE FOR 0.2 MILE TO GATE AND STATION SITE.
 HV5718'
 HV5718'A 113-FOOT TOWER WILL CLEAR ALL LINES OBSERVED AT STATION.
 HV5718
 HV5718                          STATION RECOVERY (1961)
 HV5718
 HV5718'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5718'STATION MARK AND R.M. NO.3 (AZIMUTH MARK) RECOVERED IN GOOD
 HV5718'CONDITION.  REFERENCE MARK NO.1 AND NO.2 HAVE BEEN DESTROYED BY
 HV5718'CULTIVATION.  THE GATE REFERRED TO IN THE ORIGINAL DESCRIPTION HAS
 HV5718'BEEN REMOVED.  STATION IS LOCATED IN THE HEDGEROW OF HONEYSUCKLE
 HV5718'18 INCHES W OF THE FENCE AT A POINT WHERE THE FARM ROADS MAKE A 90
 HV5718'DEGREE TURN FROM A SW TO A SE DIRECTION.  12 FT. NE OF NW-SE ROAD
 HV5718'AND 48 FT. SE OF THE NE-SW ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5756 ***********************************************************************
 JV5756  DESIGNATION -  BIGHT
 JV5756  PID         -  JV5756
 JV5756  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5756  COUNTRY     -  US
 JV5756  USGS QUAD   -  ROUND BAY (2016)
 JV5756
 JV5756                         *CURRENT SURVEY CONTROL
 JV5756  ______________________________________________________________________
 JV5756* NAD 83(1991) POSITION- 39 01 55.89081(N) 076 31 31.50046(W)   ADJUSTED
 JV5756* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5756  ______________________________________________________________________
 JV5756  GEOID HEIGHT    -        -33.191 (meters)                     GEOID18
 JV5756  LAPLACE CORR    -         -3.87  (seconds)                    DEFLEC18
 JV5756  HORZ ORDER      -  THIRD
 JV5756
 JV5756.The horizontal coordinates were established by classical geodetic methods
 JV5756.and adjusted by the National Geodetic Survey in January 1992.
 JV5756
 JV5756.The orthometric height was scaled from a topographic map.
 JV5756
 JV5756.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5756.GEOID18 height accuracy estimate available here.
 JV5756
 JV5756.Click photographs - Photos may exist for this station.
 JV5756
 JV5756.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5756
 JV5756. The following values were computed from the NAD 83(1991) position.
 JV5756
 JV5756;                    North         East     Units Scale Factor Converg.
 JV5756;SPC MD       -   151,686.657   441,090.707   MT  0.99995356   +0 17 52.3
 JV5756;SPC MD       -   497,658.64  1,447,145.09   sFT  0.99995356   +0 17 52.3
 JV5756;UTM  18      - 4,321,455.955   367,968.098   MT  0.99981465   -0 57 38.8
 JV5756
 JV5756!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5756!SPC MD       -   1.00000478  x   0.99995356  =   0.99995834
 JV5756!UTM  18      -   1.00000478  x   0.99981465  =   0.99981942
 JV5756
 JV5756:                Primary Azimuth Mark                     Grid Az
 JV5756:SPC MD       -  POINT                                    164 41 07.9
 JV5756:UTM  18      -  POINT                                    165 56 39.0
 JV5756
 JV5756_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6796821455(NAD 83)
 JV5756
 JV5756|---------------------------------------------------------------------|
 JV5756| PID    Reference Object                     Distance      Geod. Az  |
 JV5756|                                                           dddmmss.s |
 JV5756| CA9967 BIGHT RM                             11.640 METERS 00633     |
 JV5756| JV5785 POINT                               APPROX. 0.8 KM 1645900.2 |
 JV5756|---------------------------------------------------------------------|
 JV5756
 JV5756                          SUPERSEDED SURVEY CONTROL
 JV5756
 JV5756  NAD 83(1986)-  39 01 55.88721(N)    076 31 31.51134(W) AD(       ) 3
 JV5756  NAD 27      -  39 01 55.48900(N)    076 31 32.64900(W) AD(       ) 3
 JV5756  USSD        -  39 01 55.84000(N)    076 31 32.49900(W) AD(       ) 3
 JV5756
 JV5756.Superseded values are not recommended for survey control.
 JV5756
 JV5756.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5756.See file dsdata.pdf to determine how the superseded data were derived.
 JV5756
 JV5756
 JV5756  HISTORY     - Date     Condition        Report By
 JV5756  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5756  HISTORY     - 1906     GOOD             CGS
 JV5756  HISTORY     - 1934     MARK NOT FOUND   CGS
 JV5756
 JV5756                          STATION DESCRIPTION
 JV5756
 JV5756'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5756'ON THE NE SHORE OF SEVERN RIVER, ABOUT 1/2 MILE NE OF BREWER
 JV5756'POINT AND 1/2 MILE SE OF ARNOLD POINT, ON A LOW NARROW NECK OF
 JV5756'LAND AT THE UPPER SIDE OF ENTRANCE TO RAYS POND, ABOUT 2 FEET
 JV5756'ABOVE AND 15 FEET BACK FROM HIGH-WATER MARK.  IT IS 15 FEET S OF
 JV5756'SLOPE TO A YELLOW SAND BLUFF 60 FEET HIGH.  A GROUP OF HOLLY
 JV5756'TREES STAND ABOUT 10 FEET E OF THE STATION.  STATION MARKED BY A
 JV5756'NAIL IN A PINE STUB WITH TOP 3 INCHES BELOW SURFACE OF THE
 JV5756'GROUND.  THE STUB IS INSIDE A 4-INCH TILE PIPE SET WITH TOP 12
 JV5756'INCHES BELOW SURFACE.  REFERENCE MARK IS MARKED BY A HOLE IN
 JV5756'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 JV5756'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH
 JV5756'TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 JV5756'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 11.64 METERS
 JV5756'(38.2 FEET) FROM STATION N 29 DEG 19 MIN E.  DISTANCES
 JV5756'AND BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE
 JV5756'AS FOLLOWS--S CHIMNEY OF YELLOW HOUSE ON OPPOSITE SHORE,
 JV5756'1/2 MILE, S 44 DEG 41 MIN W.  NW CORNER OF UNPAINTED HOUSE ON
 JV5756'OPPOSITE SHORE, 1/4 MILE, N 27 DEG 58 MIN W.  NAIL IN BLAZE IN
 JV5756'12-INCH LEANING PINE TREE, 3.72 METERS (12.20 FEET), N 3 DEG 14
 JV5756'MIN E.  NAIL IN BLAZE IN 4-INCH HOLLY TREE, 3.79 METERS (12.43
 JV5756'FEET), N 18 DEG 50 MIN E.  EASTERN OF 2 CEDAR TREES STANDING CLOSE
 JV5756'TOGETHER (ON FIRST HILL S), 1/2 MILE, S 00 DEG 54 MIN W.
 JV5756
 JV5756                          STATION RECOVERY (1934)
 JV5756
 JV5756'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5756'THE STATION COULD NOT BE RECOVERED.  NONE OF THE REFERENCE MARKS
 JV5756'AS DESCRIBED COULD BE IDENTIFIED.  SEVERAL 4-INCH HOLLY TREES ARE
 JV5756'AT THE APPROXIMATE LOCATION GIVEN IN THE DESCRIPTION.  IT IS
 JV5756'POSSIBLE THAT THE M.S.F.S. REFERENCE MARK HAS BEEN COVERED BY
 JV5756'GROWTH OF BRUSH.  IT IS RECOMMENDED THAT THE STATION BE REPORTED
 JV5756'AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3560 ***********************************************************************
 JU3560  DESIGNATION -  BIGHT
 JU3560  PID         -  JU3560
 JU3560  STATE/COUNTY-  MD/CECIL
 JU3560  COUNTRY     -  US
 JU3560  USGS QUAD   -  EARLEVILLE (2016)
 JU3560
 JU3560                         *CURRENT SURVEY CONTROL
 JU3560  ______________________________________________________________________
 JU3560* NAD 83(1991) POSITION- 39 22 44.18832(N) 075 58 34.66568(W)   ADJUSTED
 JU3560* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3560  ______________________________________________________________________
 JU3560  GEOID HEIGHT    -        -33.411 (meters)                     GEOID18
 JU3560  LAPLACE CORR    -         -1.75  (seconds)                    DEFLEC18
 JU3560  HORZ ORDER      -  THIRD
 JU3560
 JU3560.The horizontal coordinates were established by classical geodetic methods
 JU3560.and adjusted by the National Geodetic Survey in January 1992.
 JU3560
 JU3560.The orthometric height was scaled from a topographic map.
 JU3560
 JU3560.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3560.GEOID18 height accuracy estimate available here.
 JU3560
 JU3560.Click photographs - Photos may exist for this station.
 JU3560
 JU3560.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3560
 JU3560. The following values were computed from the NAD 83(1991) position.
 JU3560
 JU3560;                    North         East     Units Scale Factor Converg.
 JU3560;SPC MD       -   190,569.066   488,201.954   MT  0.99998834   +0 38 33.0
 JU3560;SPC MD       -   625,225.34  1,601,709.24   sFT  0.99998834   +0 38 33.0
 JU3560;UTM  18      - 4,359,284.011   415,912.799   MT  0.99968706   -0 37 10.0
 JU3560
 JU3560!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3560!SPC MD       -   1.00000512  x   0.99998834  =   0.99999346
 JU3560!UTM  18      -   1.00000512  x   0.99968706  =   0.99969218
 JU3560
 JU3560_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1591259284(NAD 83)
 JU3560
 JU3560                          SUPERSEDED SURVEY CONTROL
 JU3560
 JU3560  NAD 83(1986)-  39 22 44.18045(N)    075 58 34.67263(W) AD(       ) 3
 JU3560  NAD 27      -  39 22 43.79000(N)    075 58 35.88000(W) AD(       ) 3
 JU3560  USSD        -  39 22 44.18000(N)    075 58 35.75000(W) AD(       ) 3
 JU3560
 JU3560.Superseded values are not recommended for survey control.
 JU3560
 JU3560.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3560.See file dsdata.pdf to determine how the superseded data were derived.
 JU3560
 JU3560_MARKER: 61 = POLE
 JU3560
 JU3560  HISTORY     - Date     Condition        Report By
 JU3560  HISTORY     - 1898     FIRST OBSERVED   CGS
 JU3560
 JU3560                          STATION DESCRIPTION
 JU3560
 JU3560'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (HLM)
 JU3560'ON N SHORE OF SASSAFRAS RIVER, IN BIGHT TO EASTWARD OF ORDINARY
 JU3560'POINT.  MARKED BY SIGNAL POLE SET IN BOX 3 BY 3 INCHES AND 3
 JU3560'FEET DEEP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4986 ***********************************************************************
 JV4986  DESIGNATION -  BILL
 JV4986  PID         -  JV4986
 JV4986  STATE/COUNTY-  MD/QUEEN ANNES
 JV4986  COUNTRY     -  US
 JV4986  USGS QUAD   -  CHESTERTOWN (2017)
 JV4986
 JV4986                         *CURRENT SURVEY CONTROL
 JV4986  ______________________________________________________________________
 JV4986* NAD 83(1991) POSITION- 39 08 57.35399(N) 076 04 30.19997(W)   ADJUSTED
 JV4986* NAVD 88 ORTHO HEIGHT -     7.    (meters)       23.    (feet) SCALED
 JV4986  ______________________________________________________________________
 JV4986  GEOID HEIGHT    -        -33.522 (meters)                     GEOID18
 JV4986  LAPLACE CORR    -         -2.45  (seconds)                    DEFLEC18
 JV4986  HORZ ORDER      -  THIRD
 JV4986
 JV4986.The horizontal coordinates were established by classical geodetic methods
 JV4986.and adjusted by the National Geodetic Survey in January 1992.
 JV4986
 JV4986.The orthometric height was scaled from a topographic map.
 JV4986
 JV4986.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4986.GEOID18 height accuracy estimate available here.
 JV4986
 JV4986.Click photographs - Photos may exist for this station.
 JV4986
 JV4986.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4986
 JV4986. The following values were computed from the NAD 83(1991) position.
 JV4986
 JV4986;                    North         East     Units Scale Factor Converg.
 JV4986;SPC MD       -   164,981.461   479,951.522   MT  0.99996121   +0 34 49.9
 JV4986;SPC MD       -   541,276.68  1,574,640.95   sFT  0.99996121   +0 34 49.9
 JV4986;UTM  18      - 4,333,891.155   407,103.844   MT  0.99970626   -0 40 43.6
 JV4986
 JV4986!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4986!SPC MD       -   1.00000420  x   0.99996121  =   0.99996541
 JV4986!UTM  18      -   1.00000420  x   0.99970626  =   0.99971046
 JV4986
 JV4986:                Primary Azimuth Mark                     Grid Az
 JV4986:SPC MD       -  CAKE                                     163 44 06.5
 JV4986:UTM  18      -  CAKE                                     164 59 40.0
 JV4986
 JV4986_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0710333891(NAD 83)
 JV4986
 JV4986|---------------------------------------------------------------------|
 JV4986| PID    Reference Object                     Distance      Geod. Az  |
 JV4986|                                                           dddmmss.s |
 JV4986| JV4980 CAKE                                APPROX. 0.7 KM 1641856.4 |
 JV4986|---------------------------------------------------------------------|
 JV4986
 JV4986                          SUPERSEDED SURVEY CONTROL
 JV4986
 JV4986  NAD 83(1986)-  39 08 57.34742(N)    076 04 30.21229(W) AD(       ) 3
 JV4986  NAD 27      -  39 08 56.95700(N)    076 04 31.40500(W) AD(       ) 3
 JV4986  USSD        -  39 08 57.37700(N)    076 04 31.18100(W) AD(       ) 3
 JV4986
 JV4986.Superseded values are not recommended for survey control.
 JV4986
 JV4986.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4986.See file dsdata.pdf to determine how the superseded data were derived.
 JV4986
 JV4986_MARKER: H = DRILL HOLE
 JV4986_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4986_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4986+STABILITY: SURFACE MOTION
 JV4986
 JV4986  HISTORY     - Date     Condition        Report By
 JV4986  HISTORY     - 1909     MONUMENTED       MDSFC
 JV4986  HISTORY     - 1941     GOOD             CGS
 JV4986  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV4986
 JV4986                          STATION DESCRIPTION
 JV4986
 JV4986'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV4986'STATION IS ON THE EASTERN SHORE OF UPPER CHESTER RIVER, ABOUT 3/4
 JV4986'MILE N OF MELTON POINT AND NEARLY OPPOSITE BROWNS CREEK, IN A GROVE
 JV4986'OF ELM, ASH, AND OAK TREES ON N SIDE OF A POINT, ABOUT 20 FEET
 JV4986'ABOVE HIGH WATER, 7 YARDS SSE OF EDGE OF BANK, 30 YARDS ENE OF A
 JV4986'SMALL HOUSE, AND 40 YARDS WSW OF A FENCE.
 JV4986'
 JV4986'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV4986'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV4986'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV4986'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV4986'MARK IS CENTER OF 2-INCH TILE PIPE, BURIED WITH THE TOP 2 INCHES
 JV4986'BELOW THE BASE OF THE MONUMENT.
 JV4986'
 JV4986'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV4986'FOLLOWS--NAIL IN BLAZE IN 10-INCH ELM TREE, 12.37 METERS (40.6
 JV4986'FEET), S 5 DEG 03 MIN W. NAIL IN BLAZE IN 9-INCH ELM TREE, 9.92 METERS
 JV4986'(32.55 FEET), S 53 DEG 42 MIN W.  NAIL IN BLAZE IN 24-INCH OAK TREE,
 JV4986'2.95 METERS (9.68 FEET), N 66 DEG 18 MIN W. E CHIMNEY OF BRICK
 JV4986'HOUSE, 3/4 MILE, N 58 DEG 12 MIN.  WPEAK OF SHARP ROOF, 1/2 MILE,
 JV4986'N 39 DEG 48 MIN W. SPINDLE ON PEAK OF HOUSE OF ROLPHS WHARF, 2-3/4
 JV4986'MILES, N 51 DEG 57 MIN E. NAIL IN BLAZE IN 8-INCH TREE, 7.60 METERS
 JV4986'(24.93 FEET), N 84 DEG 44 MIN E. LEFT CHIMNEY OF HOUSE ON RIDGE, 3/4
 JV4986'MILE, S 53 DEG 24 MIN E. NAIL IN BLAZE IN 15-INCH TREE, 12.30
 JV4986'METERS (40.4 FEET), S 32 DEG 16 MIN E. CHIMNEY ON ELL OF HOUSE, 1
 JV4986'MILE, S 26 DEG 09 MIN E. RIGHT PEAK OF BOOKERS WHARF HOUSE, 1-1/4
 JV4986'MILES S 03 DEG 37 MIN E.
 JV4986
 JV4986                          STATION RECOVERY (1941)
 JV4986
 JV4986'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV4986'RECOVERED IN GOOD CONDITION 1/2 METER FROM EDGE OF BANK.  IT IS
 JV4986'LOCATED IN GROVE OF HICKORY, OAK, AND CEDAR AND IS ABOUT 30 METERS
 JV4986'FROM OLD BATH HOUSE IN A SOUTHERLY DIRECTION.  OTHER DISTANCES
 JV4986'FOLLOW--
 JV4986'
 JV4986'25.4 METERS NNW OF TRIANGLE IN 10-INCH CEDAR.
 JV4986'
 JV4986'12.3 METERS E OF TRIANGLE IN 10-INCH HICKORY.
 JV4986'
 JV4986'5.3 METERS NW OF TRIANGLE IN LONE PEAR TREE.
 JV4986'
 JV4986'18.05 METERS SW OF NAIL IN BLAZE IN FORKED HICKORY.
 JV4986'
 JV4986'9.9 METERS S OF NAIL IN BLAZE IN 8-INCH HICKORY.
 JV4986
 JV4986                          STATION RECOVERY (1953)
 JV4986
 JV4986'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JV4986'STATION WAS DESTROYED.  POST WAS FOUND OUT OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6845 ***********************************************************************
 HV6845  DESIGNATION -  BILLIARD MSFC 1908
 HV6845  PID         -  HV6845
 HV6845  STATE/COUNTY-  MD/ST MARYS
 HV6845  COUNTRY     -  US
 HV6845  USGS QUAD   -  MECHANICSVILLE (2016)
 HV6845
 HV6845                         *CURRENT SURVEY CONTROL
 HV6845  ______________________________________________________________________
 HV6845* NAD 83(1993) POSITION- 38 28 51.25417(N) 076 40 00.51253(W)   ADJUSTED
 HV6845* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6845  ______________________________________________________________________
 HV6845  GEOID HEIGHT    -        -33.749 (meters)                     GEOID18
 HV6845  LAPLACE CORR    -         -3.69  (seconds)                    DEFLEC18
 HV6845  HORZ ORDER      -  SECOND
 HV6845
 HV6845.The horizontal coordinates were established by classical geodetic methods
 HV6845.and adjusted by the National Geodetic Survey in November 1994.
 HV6845
 HV6845.The orthometric height was scaled from a topographic map.
 HV6845
 HV6845.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6845.GEOID18 height accuracy estimate available here.
 HV6845
 HV6845.Click photographs - Photos may exist for this station.
 HV6845
 HV6845.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6845
 HV6845. The following values were computed from the NAD 83(1993) position.
 HV6845
 HV6845;                    North         East     Units Scale Factor Converg.
 HV6845;SPC MD       -    90,436.665   429,072.005   MT  0.99997346   +0 12 32.8
 HV6845;SPC MD       -   296,707.63  1,407,713.74   sFT  0.99997346   +0 12 32.8
 HV6845;UTM  18      - 4,260,490.604   354,614.756   MT  0.99986030   -1 02 14.5
 HV6845
 HV6845!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6845!SPC MD       -   1.00000534  x   0.99997346  =   0.99997880
 HV6845!UTM  18      -   1.00000534  x   0.99986030  =   0.99986564
 HV6845
 HV6845:                Primary Azimuth Mark                     Grid Az
 HV6845:SPC MD       -  TRENT                                    146 53 58.4
 HV6845:UTM  18      -  TRENT                                    148 08 45.7
 HV6845
 HV6845_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5461460490(NAD 83)
 HV6845
 HV6845|---------------------------------------------------------------------|
 HV6845| PID    Reference Object                     Distance      Geod. Az  |
 HV6845|                                                           dddmmss.s |
 HV6845| HV6843 TRENT                               APPROX. 0.6 KM 1470631.2 |
 HV6845|---------------------------------------------------------------------|
 HV6845
 HV6845                          SUPERSEDED SURVEY CONTROL
 HV6845
 HV6845  NAD 83(1991)-  38 28 51.25423(N)    076 40 00.51380(W) AD(       ) 2
 HV6845  NAD 83(1986)-  38 28 51.25343(N)    076 40 00.52777(W) AD(       ) 2
 HV6845  NAD 27      -  38 28 50.80900(N)    076 40 01.67800(W) AD(       ) 2
 HV6845  USSD        -  38 28 51.16500(N)    076 40 01.42100(W) AD(       ) 3
 HV6845
 HV6845.Superseded values are not recommended for survey control.
 HV6845
 HV6845.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6845.See file dsdata.pdf to determine how the superseded data were derived.
 HV6845
 HV6845_MARKER: H = DRILL HOLE
 HV6845_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6845_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6845+STABILITY: SURFACE MOTION
 HV6845
 HV6845  HISTORY     - Date     Condition        Report By
 HV6845  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6845  HISTORY     - 1930     SEE DESCRIPTION  MDDNR
 HV6845  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6845  HISTORY     - 1945     SEE DESCRIPTION  CGS
 HV6845
 HV6845                          STATION DESCRIPTION
 HV6845
 HV6845'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6845'STATION IS ON THE SW SHORE OF PATUXENT RIVER, ABOUT 1/4 MILE SE OF
 HV6845'ENTRANCE TO TRENT HALL CREEK, ON MARSH LAND ABOUT 1 FOOT ABOVE
 HV6845'HIGH WATER, 6 YARDS W OF SHORE, 70 YARDS N OF CURVE IN SHORE, AND
 HV6845'ABOUT 100 TO 150 YARDS N TO NW OF A FENCE WHICH RUNS TO WATERS
 HV6845'EDGE.  STATION MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6845'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6845'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV6845'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6845'DISTANCES AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF
 HV6845'REFERENCE ARE AS FOLLOWS--TANGENT OF CURVE IN WATER LINE, 71
 HV6845'YARDS, S 0 DEG 6 MIN W.  CHIMNEY OF 2 1/2-STORY HOUSE, 2 MILES, S
 HV6845'49 DEG 5 MIN W.  RIGHT CORNER OF SOTHORONS HOUSE, 1/2 MILE, N 50
 HV6845'DEG 20 MIN W.  NEAR CORNER OF CHIMNEY ON SLYES HOUSE, 2 MILES, N
 HV6845'41 DEG 45 MIN W.  RIGHT TANGENT OF WHARF, 2 MILES, N 0 DEG 17
 HV6845'MIN E.  MIDDLE OF THREE CHIMNEYS ON GOURLEYS HOUSE, 2 MILES, N 15
 HV6845'DEG 59 MIN E.  CHIMNEY ON HOUSE AMONG TREES, 1-1/2 MILES, N 80
 HV6845'DEG 47 MIN E.  NEAREST END OF PEAK OF ROOF OF DOWELLS HOUSE AT
 HV6845'DUKES WHARF, 1-3/4 MILES, S 59 DEG 12 MIN E.  RIGHT TANGENT OF
 HV6845'SHERIDAN POINT, 1-1/2 MILES, S 51 DEG 20 MIN E.  LEFT TANGENT OF
 HV6845'TRENT HALL WHARF, 3/8 MILE, S 44 DEG 5 MIN E.  SMOKE PIPE ON
 HV6845'HOUSE AT LAND END OF TRENT HALL WHARF, 3/8 MILE, S 36 DEG 1 MIN E.
 HV6845'MIDDLE CUPOLA ON TRENT HALL STABLE, 1/2 MILE, S 16 DEG 18 MIN E.
 HV6845'CHIMNEY ON TRENT HALL, 1/2 MILE, S 14 DEG 13 MIN E.  TWO TREES,
 HV6845'200 YARDS, S 1 DEG 6 MIN E.
 HV6845
 HV6845                          STATION RECOVERY (1930)
 HV6845
 HV6845'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6845'STATION WASHED OUT WHEN FOUND.  REBURIED IN SAME SPOT AND ERECTED
 HV6845'A CROSS MARK ALONG SIDE.  A CUT-IN SHOWS SAME LOCATION APPROXIMATELY.
 HV6845
 HV6845                          STATION RECOVERY (1943)
 HV6845
 HV6845'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6845'ACCORDING TO THE 1930 RECOVERY NOTE THIS STATION HAD BEEN WASHED
 HV6845'OUT AND WAS RESET MORE OR LESS IN ITS ORIGINAL POSITION.  A
 HV6845'THOROUGH SEARCH WAS MADE OF THE LOCALITY BUT NO TRACE OF THE
 HV6845'STATION WAS FOUND AND IT IS BELIEVED TO HAVE BEEN WASHED OUT AGAIN
 HV6845'SINCE 1930.
 HV6845'
 HV6845'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
 HV6845
 HV6845                          STATION RECOVERY (1945)
 HV6845
 HV6845'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945 (FLP)
 HV6845'THE REMAINS OF THE STATION WERE FOUND ON THE BEACH AFTER IT HAD
 HV6845'BEEN WASHED OUT AND BROKEN UP.  STATION IS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6453 ***********************************************************************
 HV6453  DESIGNATION -  BILLY
 HV6453  PID         -  HV6453
 HV6453  STATE/COUNTY-  MD/DORCHESTER
 HV6453  COUNTRY     -  US
 HV6453  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6453
 HV6453                         *CURRENT SURVEY CONTROL
 HV6453  ______________________________________________________________________
 HV6453* NAD 83(1991) POSITION- 38 12 11.06473(N) 076 04 15.64430(W)   ADJUSTED
 HV6453* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6453  ______________________________________________________________________
 HV6453  GEOID HEIGHT    -        -35.593 (meters)                     GEOID18
 HV6453  LAPLACE CORR    -         -1.64  (seconds)                    DEFLEC18
 HV6453  HORZ ORDER      -  THIRD
 HV6453
 HV6453.The horizontal coordinates were established by classical geodetic methods
 HV6453.and adjusted by the National Geodetic Survey in January 1992.
 HV6453
 HV6453.The orthometric height was scaled from a topographic map.
 HV6453
 HV6453.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6453.GEOID18 height accuracy estimate available here.
 HV6453
 HV6453.Click photographs - Photos may exist for this station.
 HV6453
 HV6453.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6453
 HV6453. The following values were computed from the NAD 83(1991) position.
 HV6453
 HV6453;                    North         East     Units Scale Factor Converg.
 HV6453;SPC MD       -    59,957.831   481,369.839   MT  1.00001828   +0 34 59.0
 HV6453;SPC MD       -   196,711.65  1,579,294.21   sFT  1.00001828   +0 34 59.0
 HV6453;UTM  18      - 4,228,888.911   406,226.576   MT  0.99970830   -0 39 44.7
 HV6453
 HV6453!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6453!SPC MD       -   1.00000546  x   1.00001828  =   1.00002375
 HV6453!UTM  18      -   1.00000546  x   0.99970830  =   0.99971376
 HV6453
 HV6453_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0622628888(NAD 83)
 HV6453
 HV6453                          SUPERSEDED SURVEY CONTROL
 HV6453
 HV6453  NAD 83(1986)-  38 12 11.06493(N)    076 04 15.66307(W) AD(       ) 3
 HV6453  NAD 27      -  38 12 10.63000(N)    076 04 16.90000(W) AD(       ) 3
 HV6453
 HV6453.Superseded values are not recommended for survey control.
 HV6453
 HV6453.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6453.See file dsdata.pdf to determine how the superseded data were derived.
 HV6453
 HV6453_MARKER: DW = HYDROGRAPHIC STATION DISK
 HV6453_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6453_STAMPING: BILLY 1942
 HV6453_MARK LOGO: CGS
 HV6453_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6453+STABILITY: SURFACE MOTION
 HV6453
 HV6453  HISTORY     - Date     Condition        Report By
 HV6453  HISTORY     - 1948     MONUMENTED       CGS
 HV6453  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6453
 HV6453                          STATION DESCRIPTION
 HV6453
 HV6453'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (RHT)
 HV6453'THE STATION IS ON THE E SHORE OF CHESAPEAKE BAY, ON THE S SHORE
 HV6453'OF HOOPER STRAIT, ON THE N SIDE OF OKAHANIKAN COVE, ON THE W SIDE
 HV6453'OF BILLY ISLAND, 82.6 METERS NNW OF THE SW POINT OF BILLY ISLAND,
 HV6453'35.8 METERS ENE OF W SIDE OF ISLAND, SET IN TOP OF A 5-INCH STOVE
 HV6453'PIPE FILLED WITH CEMENT.  THE PIPE IS SET IN A 10-INCH CONCRETE
 HV6453'BLOCK BURIED IN MARSH.  STATION MARK IS A BRONZE HYDROGRAPHIC
 HV6453'DISK STAMPED BILLY 1942.  THE MARK PROJECTS 4 INCHES ABOVE THE
 HV6453'MARSH.
 HV6453
 HV6453                          STATION RECOVERY (1961)
 HV6453
 HV6453'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6453'STATION NOT RECOVERED.  IT NOW PLOTS IN THE WATER AND HAS
 HV6453'PROBABLY BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6110 ***********************************************************************
 JV6110  DESIGNATION -  BIRCH
 JV6110  PID         -  JV6110
 JV6110  STATE/COUNTY-  MD/BALTIMORE
 JV6110  COUNTRY     -  US
 JV6110  USGS QUAD   -  HEREFORD (2016)
 JV6110
 JV6110                         *CURRENT SURVEY CONTROL
 JV6110  ______________________________________________________________________
 JV6110* NAD 83(1991) POSITION- 39 31 40.13592(N) 076 39 44.23794(W)   ADJUSTED
 JV6110* NAVD 88 ORTHO HEIGHT -   158.    (meters)      518.    (feet) SCALED
 JV6110  ______________________________________________________________________
 JV6110  GEOID HEIGHT    -        -32.325 (meters)                     GEOID18
 JV6110  LAPLACE CORR    -         -2.91  (seconds)                    DEFLEC18
 JV6110  HORZ ORDER      -  SECOND
 JV6110
 JV6110.The horizontal coordinates were established by classical geodetic methods
 JV6110.and adjusted by the National Geodetic Survey in January 1992.
 JV6110
 JV6110.The orthometric height was scaled from a topographic map.
 JV6110
 JV6110.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6110.GEOID18 height accuracy estimate available here.
 JV6110
 JV6110.Click photographs - Photos may exist for this station.
 JV6110
 JV6110.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6110
 JV6110. The following values were computed from the NAD 83(1991) position.
 JV6110
 JV6110;                    North         East     Units Scale Factor Converg.
 JV6110;SPC MD       -   206,656.884   429,036.511   MT  1.00001454   +0 12 43.1
 JV6110;SPC MD       -   678,006.79  1,407,597.29   sFT  1.00001454   +0 12 43.1
 JV6110;UTM  18      - 4,376,670.743   357,131.224   MT  0.99985131   -1 03 29.3
 JV6110
 JV6110!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6110!SPC MD       -   0.99998032  x   1.00001454  =   0.99999486
 JV6110!UTM  18      -   0.99998032  x   0.99985131  =   0.99983163
 JV6110
 JV6110:                Primary Azimuth Mark                     Grid Az
 JV6110:SPC MD       -  BIRCH AZ MK                              350 32 58.9
 JV6110:UTM  18      -  BIRCH AZ MK                              351 49 11.3
 JV6110
 JV6110_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5713176670(NAD 83)
 JV6110
 JV6110|---------------------------------------------------------------------|
 JV6110| PID    Reference Object                     Distance      Geod. Az  |
 JV6110|                                                           dddmmss.s |
 JV6110| JV3755 BIRCH RM 1                            8.197 METERS 16657     |
 JV6110| JV3754 BIRCH RM 2                           11.460 METERS 26315     |
 JV6110| JV1472 BIRCH 2                              67.932 METERS 26719     |
 JV6110| JV1474 BIRCH AZ MK                                        3504542.0 |
 JV6110|---------------------------------------------------------------------|
 JV6110
 JV6110                          SUPERSEDED SURVEY CONTROL
 JV6110
 JV6110  NAD 83(1986)-  39 31 40.13288(N)    076 39 44.24482(W) AD(       ) 2
 JV6110  NAD 83(1986)-  39 31 40.03922(N)    076 39 44.24104(W) AD(       ) 2
 JV6110  NAD 27      -  39 31 39.74820(N)    076 39 45.34450(W) AD(       ) 2
 JV6110
 JV6110.Superseded values are not recommended for survey control.
 JV6110
 JV6110.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6110.See file dsdata.pdf to determine how the superseded data were derived.
 JV6110
 JV6110_MARKER: DS = TRIANGULATION STATION DISK
 JV6110_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6110_STAMPING: BIRCH 1959
 JV6110_MARK LOGO: CGS
 JV6110_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6110+STABILITY: SURFACE MOTION
 JV6110
 JV6110  HISTORY     - Date     Condition        Report By
 JV6110  HISTORY     - 1959     MONUMENTED       CGS
 JV6110  HISTORY     - 1959     GOOD             CGS
 JV6110
 JV6110                          STATION DESCRIPTION
 JV6110
 JV6110'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV6110'STATION IS LOCATED ON TOP OF THE HIGHEST POINT OF A HILL ALONG
 JV6110'U.S. HIGHWAY NO. 111 ABOUT 4-1/2 MILES SOUTH OF THE VILLAGE OF
 JV6110'HEREFORD, 6 MILES NORTH OF TIMONIUM AND 2 MILES NORTH OF BONNIE
 JV6110'BLINK MASONIC TEMPLE HOME.  THE STATION MARK IS A STANDARD DISK
 JV6110'IN A 12 BY 12 INCH CONCRETE MONUMENT STAMPED BIRCH 1959.  THE
 JV6110'MONUMENT IS FLUSH WITH THE GROUND.
 JV6110'
 JV6110'TO REACH FROM THE OVERPASS AT U.S. HIGHWAY NO. 111 AND TIMONIUM
 JV6110'ROAD, WHICH IS 0.5 MILE WEST OF THE VILLAGE OF TIMONIUM, GO
 JV6110'NORTHERLY ON U.S. HIGHWAY NO. 111 FOR 4.45 MILES TO OVERPASS AT
 JV6110'SHAWAN ROAD, CONTINUE NORTHERLY ON U.S. HIGHWAY NO. 111 FOR 2.35
 JV6110'MILES TO STATION ON LEFT ON TOP OF HIGHEST POINT NEAR A LONE
 JV6110'BIRCH TREE 150 YARDS WEST OF HIGHWAY.  CONTINUE NORTHERLY ON
 JV6110'U.S. HIGHWAY NO. 111 FOR 1.5 MILES TO AZIMUTH MARK ON LEFT SET
 JV6110'IN SOUTH END OF OVERPASS AT BELFAST ROAD AND U.S. HIGHWAY NO.
 JV6110'111.
 JV6110'
 JV6110'REFERENCE MARK NO. 1 IS A STANDARD DISK SET IN A 12 BY 12 INCH
 JV6110'CONCRETE MONUMENT AND PROJECTS 2 INCHES FROM THE GROUND.  THE
 JV6110'DISK IS STAMPED BIRCH NO 1 1959.  IT IS 40 FEET SOUTHWEST OF A
 JV6110'LONE BIRCH TREE.
 JV6110'
 JV6110'REFERENCE MARK NO. 2 IS A STANDARD DISK SET IN A 12 BY 12 INCH
 JV6110'CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  THE DISK IS
 JV6110'STAMPED BIRCH NO 2 1959.  IT IS 35.6 FEET WEST OF A WITNESS POST.
 JV6110'
 JV6110'AZIMUTH MARK IS A STANDARD DISK SET IN A DRILL HOLE.  THE DISK
 JV6110'IS STAMPED BIRCH 1959.  IT IS IN THE SOUTHEAST END OF OVERPASS,
 JV6110'1.5 FEET EAST OF CURB, 1.7 FEET NORTH OF SOUTH EDGE OF CURB, 1-1/2
 JV6110'FEET WEST OF BRIDGE RAIL AND 16-1/2 FEET EAST OF CENTERLINE OF
 JV6110'U.S. HIGHWAY NO. 111.
 JV6110'
 JV6110'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV6110
 JV6110                          STATION RECOVERY (1959)
 JV6110
 JV6110'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (WFD)
 JV6110'STATION, REFERENCE AND AZIMUTH MARKS WERE RECOVERED AS DESCRIBED.
 JV6110'
 JV6110'ALL MARKS EXCEPT AZIMUTH MARK WERE DESTROYED.  A NEW STATION
 JV6110'WAS LOCATED NEARBY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1472 ***********************************************************************
 JV1472  DESIGNATION -  BIRCH 2
 JV1472  PID         -  JV1472
 JV1472  STATE/COUNTY-  MD/BALTIMORE
 JV1472  COUNTRY     -  US
 JV1472  USGS QUAD   -  HEREFORD (2016)
 JV1472
 JV1472                         *CURRENT SURVEY CONTROL
 JV1472  ______________________________________________________________________
 JV1472* NAD 83(1991) POSITION- 39 31 40.03249(N) 076 39 47.07917(W)   ADJUSTED
 JV1472* NAVD 88 ORTHO HEIGHT -   160.773 (meters)      527.47  (feet) ADJUSTED
 JV1472  ______________________________________________________________________
 JV1472  GEOID HEIGHT    -        -32.324 (meters)                     GEOID18
 JV1472  LAPLACE CORR    -         -2.92  (seconds)                    DEFLEC18
 JV1472  DYNAMIC HEIGHT  -        160.692 (meters)      527.20  (feet) COMP
 JV1472  MODELED GRAVITY -    980,120.6   (mgal)                       NAVD 88
 JV1472
 JV1472  HORZ ORDER      -  SECOND
 JV1472  VERT ORDER      -  SECOND    CLASS I
 JV1472
 JV1472.The horizontal coordinates were established by classical geodetic methods
 JV1472.and adjusted by the National Geodetic Survey in January 1992.
 JV1472
 JV1472.The orthometric height was determined by differential leveling and
 JV1472.adjusted by the NATIONAL GEODETIC SURVEY
 JV1472.in June 1991.
 JV1472
 JV1472.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1472.GEOID18 height accuracy estimate available here.
 JV1472
 JV1472.Click photographs - Photos may exist for this station.
 JV1472
 JV1472.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1472
 JV1472.The dynamic height is computed by dividing the NAVD 88
 JV1472.geopotential number by the normal gravity value computed on the
 JV1472.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1472.degrees latitude (g = 980.6199 gals.).
 JV1472
 JV1472.The modeled gravity was interpolated from observed gravity values.
 JV1472
 JV1472. The following values were computed from the NAD 83(1991) position.
 JV1472
 JV1472;                    North         East     Units Scale Factor Converg.
 JV1472;SPC MD       -   206,653.443   428,968.665   MT  1.00001453   +0 12 41.3
 JV1472;SPC MD       -   677,995.50  1,407,374.70   sFT  1.00001453   +0 12 41.3
 JV1472;UTM  18      - 4,376,668.807   357,063.329   MT  0.99985155   -1 03 31.1
 JV1472
 JV1472!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1472!SPC MD       -   0.99997985  x   1.00001453  =   0.99999438
 JV1472!UTM  18      -   0.99997985  x   0.99985155  =   0.99983140
 JV1472
 JV1472:                Primary Azimuth Mark                     Grid Az
 JV1472:SPC MD       -  BIRCH AZ MK                              352 15 39.7
 JV1472:UTM  18      -  BIRCH AZ MK                              353 31 52.1
 JV1472
 JV1472_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5706376668(NAD 83)
 JV1472
 JV1472|---------------------------------------------------------------------|
 JV1472| PID    Reference Object                     Distance      Geod. Az  |
 JV1472|                                                           dddmmss.s |
 JV1472| JV6110 BIRCH                                67.932 METERS 08719     |
 JV1472| CA9968 BIRCH 2 RM 3                         15.285 METERS 09418     |
 JV1472| CA9969 BIRCH 2 RM 4                         12.406 METERS 18550     |
 JV1472| JV1474 BIRCH AZ MK                                        3522821.0 |
 JV1472|---------------------------------------------------------------------|
 JV1472
 JV1472                          SUPERSEDED SURVEY CONTROL
 JV1472
 JV1472  NAD 83(1986)-  39 31 40.02947(N)    076 39 47.08605(W) AD(       ) 2
 JV1472  NAD 83(1986)-  39 31 39.93579(N)    076 39 47.08225(W) AD(       ) 2
 JV1472  NAD 27      -  39 31 39.64480(N)    076 39 48.18570(W) AD(       ) 2
 JV1472  NGVD 29             160.98   (m)          528.1    (f) LEVELING    3  
 JV1472  NGVD 29 (11/26/84)  160.980  (m)          528.15   (f) ADJUSTED    2 0
 JV1472
 JV1472.Superseded values are not recommended for survey control.
 JV1472
 JV1472.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1472.See file dsdata.pdf to determine how the superseded data were derived.
 JV1472
 JV1472_MARKER: DS = TRIANGULATION STATION DISK
 JV1472_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1472_STAMPING: BIRCH 2 1959
 JV1472_MARK LOGO: CGS
 JV1472_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1472_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1472+STABILITY: SURFACE MOTION
 JV1472_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1472+SATELLITE: SATELLITE OBSERVATIONS - March 19, 2002
 JV1472
 JV1472  HISTORY     - Date     Condition        Report By
 JV1472  HISTORY     - 1959     MONUMENTED       CGS
 JV1472  HISTORY     - 1959     GOOD             CGS
 JV1472  HISTORY     - 20020319 GOOD             MDSHA
 JV1472
 JV1472                          STATION DESCRIPTION
 JV1472
 JV1472'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (WFD)
 JV1472'STATION IS LOCATED ON TOP OF THE HIGHEST POINT OF A HILL ALONG
 JV1472'U.S. HIGHWAY NO. 111 ABOUT 4-1/2 MILES SOUTH OF THE VILLAGE OF
 JV1472'HEREFORD, 6 MILES NORTH OF TIMONIUM AND 2 MILES NORTH OF BONNIE
 JV1472'BLINK MASONIC TEMPLE HOME.  THE STATION MARK IS A STANDARD DISK
 JV1472'IN A 12 X 12 INCH CONCRETE MONUMENT STAMPED BIRCH 2 1959.  THE
 JV1472'MONUMENT IS FLUSH WITH THE GROUND AND 4 FEET EAST OF A WITNESS
 JV1472'POST.
 JV1472'
 JV1472'TO REACH FROM THE OVERPASS AT U.S. HIGHWAY NO. 111 AND TIMONIUM
 JV1472'ROAD, WHICH IS 0.5 MILES WEST OF THE VILLAGE OF TIMONIUM, GO
 JV1472'NORTHERLY ON U.S. HIGHWAY NO. 111 FOR 4.5 MILES TO OVERPASS AT
 JV1472'SHAWAN ROAD, CONTINUE NORTHERLY ON U.S. HIGHWAY NO. 111 FOR 2.35
 JV1472'MILES TO STATION ON LEFT ON TOP OF HIGHEST POINT.  STATION IS
 JV1472'ABOUT 220 YARDS WEST OF SOUTH BOUND LANE OF DUAL HIGHWAY, 258
 JV1472'FEET WEST OF A LONE BIRCH TREE, 41.0 FEET NORTH OF A WIRE FENCE
 JV1472'AND 40.8 FEET EAST OF A STONE MONUMENT IN ANGLE OF FENCE
 JV1472'LINE.  CONTINUE NORTHERLY ON U.S. HIGHWAY NO. 111 FOR 1.5
 JV1472'MILES TO AZIMUTH MARK ON LEFT, SET IN SOUTH END OF OVERPASS AT
 JV1472'BELFAST ROAD AND NORTH BOUND LANE OF U.S. HIGHWAY NO. 111.
 JV1472'
 JV1472'REFERENCE MARK NO. 3 IS A STANDARD DISK SET IN A 12 X 12 INCH
 JV1472'CONCRETE MONUMENT AND IS FLUSH WITH THE GROUND.  THE DISK IS
 JV1472'STAMPED BIRCH 2 1959 NO 3.  IT IS 90.8 FEET EAST OF A STORE
 JV1472'MONUMENT IN ANGLE OF FENCE LINE.
 JV1472'
 JV1472'REFERENCE MARK NO. 4 IS A STANDARD DISK SET IN A 12 X 12 INCH
 JV1472'CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  THE DISK IS
 JV1472'STAMPED BIRCH 2 1959 NO 4.  IT IS IN WIRE FENCE LINE 50.0 FEET
 JV1472'SOUTHEAST OF A STONE MONUMENT IN ANGLE OF FENCE LINE AND 41.0
 JV1472'FEET SOUTH OF A WITNESS POST.
 JV1472'
 JV1472'AZIMUTH MARK IS A STANDARD DISK SET IN A DRILL HOLE.  THE DISK
 JV1472'IS STAMPED BIRCH 1959.  IT IS IN THE SOUTHEAST END OF OVERPASS,
 JV1472'1.5 FEET EAST OF CURB, 1.7 FEET NORTH OF SOUTH EDGE OF CURB, 1-1/2
 JV1472'FEET WEST OF BRIDGE RAIL AND 16-1/2 FEET EAST OF CENTERLINE OF
 JV1472'NORTH BOUND LANE OF U.S. HIGHWAY NO. 111.
 JV1472
 JV1472                          STATION RECOVERY (1959)
 JV1472
 JV1472'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV1472'3.4 MI NW FROM MARBLE HILL.
 JV1472'1.0 MILE WEST ALONG SHAWAN ROAD FROM ITS JUNCTION WITH STATE
 JV1472'HIGHWAY 45 AT MARBLE HILL, THENCE 2.4 MILES NORTH ALONG NEW
 JV1472'U.S. HIGHWAY 111, ON THE TOP OF A HILL, ABOUT 635 FEET WEST OF
 JV1472'THE CENTER LINE OF THE NORTH BOUND LANE OF THE HIGHWAY, 258 1/2
 JV1472'FEET WEST OF A LONE LARGE WHITE BIRCH TREE, 40.9 FEET NORTH OF
 JV1472'AN EAST-WEST FENCE LINE, 40.8 FEET EAST OF A STONE MONUMENT AT
 JV1472'AN ANGLE IN A FENCE LINE, 4 FEET EAST OF A METAL WITNESS POST,
 JV1472'SET IN THE TOP OF A CONCRETE POST PROJECTING ABOUT 2 INCHES
 JV1472'ABOVE THE GROUND AND AT ABOUT THE HIGHEST POINT OF AN EAST-WEST
 JV1472'RIDGE.
 JV1472
 JV1472                          STATION RECOVERY (2002)
 JV1472
 JV1472'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV1472'THE STATION WAS RECOVERED AS DESCRIBED. U.S.HIGHWAY 111 IS NOW
 JV1472'U.S.HIGHWAY 83.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1592 ***********************************************************************
 HU1592  DESIGNATION -  BIRCH 2
 HU1592  PID         -  HU1592
 HU1592  STATE/COUNTY-  MD/WORCESTER
 HU1592  COUNTRY     -  US
 HU1592  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1592
 HU1592                         *CURRENT SURVEY CONTROL
 HU1592  ______________________________________________________________________
 HU1592* NAD 83(1991) POSITION- 38 12 39.35838(N) 075 11 29.86088(W)   ADJUSTED
 HU1592* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1592  ______________________________________________________________________
 HU1592  GEOID HEIGHT    -        -36.201 (meters)                     GEOID18
 HU1592  LAPLACE CORR    -         -0.02  (seconds)                    DEFLEC18
 HU1592  HORZ ORDER      -  SECOND
 HU1592
 HU1592.The horizontal coordinates were established by classical geodetic methods
 HU1592.and adjusted by the National Geodetic Survey in January 1992.
 HU1592
 HU1592.The orthometric height was scaled from a topographic map.
 HU1592
 HU1592.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1592.GEOID18 height accuracy estimate available here.
 HU1592
 HU1592.Click photographs - Photos may exist for this station.
 HU1592
 HU1592.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1592
 HU1592. The following values were computed from the NAD 83(1991) position.
 HU1592
 HU1592;                    North         East     Units Scale Factor Converg.
 HU1592;SPC MD       -    61,984.867   558,370.020   MT  1.00001669   +1 08 06.0
 HU1592;SPC MD       -   203,362.02  1,831,918.97   sFT  1.00001669   +1 08 06.0
 HU1592;UTM  18      - 4,229,236.236   483,223.869   MT  0.99960347   -0 07 06.7
 HU1592
 HU1592!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1592!SPC MD       -   1.00000556  x   1.00001669  =   1.00002225
 HU1592!UTM  18      -   1.00000556  x   0.99960347  =   0.99960903
 HU1592
 HU1592:                Primary Azimuth Mark                     Grid Az
 HU1592:SPC MD       -  MUD RM                                   054 15 52.1
 HU1592:UTM  18      -  MUD RM                                   055 31 04.8
 HU1592
 HU1592_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8322329236(NAD 83)
 HU1592
 HU1592|---------------------------------------------------------------------|
 HU1592| PID    Reference Object                     Distance      Geod. Az  |
 HU1592|                                                           dddmmss.s |
 HU1592| HU1593 MUD RM                              APPROX. 6.1 KM 0552358.1 |
 HU1592| DC7829 BIRCH 2 RM 2                          8.412 METERS 10646     |
 HU1592| DC7828 BIRCH 2 RM 1                          7.589 METERS 19152     |
 HU1592|---------------------------------------------------------------------|
 HU1592
 HU1592                          SUPERSEDED SURVEY CONTROL
 HU1592
 HU1592  NAD 83(1986)-  38 12 39.34444(N)    075 11 29.89551(W) AD(       ) 2
 HU1592  NAD 27      -  38 12 38.92225(N)    075 11 31.21246(W) AD(       ) 2
 HU1592
 HU1592.Superseded values are not recommended for survey control.
 HU1592
 HU1592.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1592.See file dsdata.pdf to determine how the superseded data were derived.
 HU1592
 HU1592_MARKER: DS = TRIANGULATION STATION DISK
 HU1592_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HU1592_STAMPING: BIRCH 2 1933
 HU1592_MARK LOGO: CGS
 HU1592_PROJECTION: PROJECTING
 HU1592_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1592
 HU1592  HISTORY     - Date     Condition        Report By
 HU1592  HISTORY     - 1933     MONUMENTED       CGS
 HU1592  HISTORY     - 1942     GOOD             CGS
 HU1592  HISTORY     - 1958     GOOD             CGS
 HU1592  HISTORY     - 1962     GOOD             CGS
 HU1592
 HU1592                          STATION DESCRIPTION
 HU1592
 HU1592'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (IER)
 HU1592'LOCATED ON S POINT ON HARD GROUND IMMEDIATELY N OF MARSH, ABOUT
 HU1592'4 FEET ABOVE HIGH WATER AND ON THE WESTERN ONE OF TWO SMALL
 HU1592'GREEN KNOLLS, ON PROPERTY OF CAPTAIN POWELL OF OCEAN CITY,
 HU1592'WHO IS FAMILIAR WITH LOCATION OF TRIANGULATION STATION.  STATION
 HU1592'IS 0.3 MILE N OF S END OF SOUTH POINT ABOUT 125 YARDS W OF
 HU1592'SHORE OF SINEPUXENT BAY.
 HU1592'
 HU1592'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1592'CONCRETE, IN THE TOP OF A TILE.
 HU1592'
 HU1592'TO REACH TRIANGULATION STATION FROM OCEAN CITY GO TO END OF
 HU1592'SO CALLED NECK ROAD (A DIRT ROAD) TO FARM OF CAPTAIN POWELL
 HU1592'DRIVE THROUGH FARM TO TRIANGULATION STATION.
 HU1592
 HU1592                          STATION RECOVERY (1942)
 HU1592
 HU1592'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1592'THIS STATION IS LOCATED ON SOUTH POINT ON HARD GROUND
 HU1592'IMMEDIATELY N OF MARSH, ABOUT 4 FEET ABOVE HIGH WATER AND
 HU1592'ON THE WESTERLY ONE OF TWO SMALL GREEN KNOLLS, ON THE
 HU1592'PROPERTY OF T. JOHNSON, 0.3 MILE N OF THE S END OF SOUTH POINT,
 HU1592'125 YARDS W OF THE SHORE OF SINEPUXENT BAY, AND 300 YARDS SE OF
 HU1592'CHINCOTEAGUE BAY.  THE STATION IS A BRONZE DISK TRIANGULATION
 HU1592'STATION MARK, STAMPED BIRCH 2, SET IN CONCRETE, IN A 6-INCH
 HU1592'TERRA-COTTA PIPE, WHICH EXTENDS 5 INCHES ABOVE THE GROUND.
 HU1592'THE STATION IS IN GOOD CONDITION.
 HU1592'
 HU1592'REFERENCE MARK NO.1 IS LOCATED 24.89 FEET SSW OF THE
 HU1592'STATION.  THE MARK IS A BRONZE DISK REFERENCE MARK, WITH THE
 HU1592'ARROW POINTING TOWARD THE STATION, STAMPED NO.1 1933, SET IN
 HU1592'CONCRETE IN A 6-INCH TERRA-COTTA PIPE, WHICH EXTENDS 4 INCHES
 HU1592'ABOVE THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1592'
 HU1592'REFERENCE MARK NO.2 IS LOCATED 27.62 FEET ESE OF THE
 HU1592'STATION.  THE MARK IS A BRONZE DISK REFERENCE MARK, WITH THE ARROW
 HU1592'POINTING TOWARD THE STATION, STAMPED NO.2 1933, SET IN CONCRETE
 HU1592'IN A 6-INCH TERRA-COTTA PIPE, WHICH EXTENDS 4 INCHES ABOVE THE
 HU1592'GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1592
 HU1592                          STATION RECOVERY (1958)
 HU1592
 HU1592'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1592'STATION WAS RECOVERED AS DESCRIBED AND FOUND TO BE IN GOOD
 HU1592'CONDITION.
 HU1592'
 HU1592'THE STATION IS 7 PACES E OF EXTENDED LINE OF POWER POLES FROM THE
 HU1592'N, 17 PACES W OF A DRAINAGE DITCH, 64 PACES S OF SMALL CEDAR
 HU1592'TREE, AND IS ABOUT 500 YARDS S OF A FARM HOUSE.
 HU1592
 HU1592                          STATION RECOVERY (1962)
 HU1592
 HU1592'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1592'THE STATION MARK AND REFERENCE MARK 1 AND 2 WERE RECOVERED AS
 HU1592'DESCRIBED AND FOUND TO BE IN GOOD CONDITION.
 HU1592'
 HU1592'THE DESCRIPTION OF TO REACH IS ADEQUATE.
 HU1592'
 HU1592'HEIGHT OF LIGHT ABOVE STATION MARK 3.1 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1474 ***********************************************************************
 JV1474  DESIGNATION -  BIRCH AZ MK
 JV1474  PID         -  JV1474
 JV1474  STATE/COUNTY-  MD/BALTIMORE
 JV1474  COUNTRY     -  US
 JV1474  USGS QUAD   -  HEREFORD (2016)
 JV1474
 JV1474                         *CURRENT SURVEY CONTROL
 JV1474  ______________________________________________________________________
 JV1474* NAD 83(1986) POSITION- 39 32 48.     (N) 076 39 59.     (W)   SCALED
 JV1474* NAVD 88 ORTHO HEIGHT -   107.333 (meters)      352.14  (feet) ADJUSTED
 JV1474  ______________________________________________________________________
 JV1474  GEOID HEIGHT    -        -32.306 (meters)                     GEOID18
 JV1474  DYNAMIC HEIGHT  -        107.279 (meters)      351.96  (feet) COMP
 JV1474  MODELED GRAVITY -    980,119.7   (mgal)                       NAVD 88
 JV1474
 JV1474  VERT ORDER      -  SECOND    CLASS 0
 JV1474
 JV1474.The horizontal coordinates were scaled from a map and have
 JV1474.an estimated accuracy of +/- 6 seconds.
 JV1474
 JV1474.The orthometric height was determined by differential leveling and
 JV1474.adjusted by the NATIONAL GEODETIC SURVEY
 JV1474.in June 1991.
 JV1474
 JV1474.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1474.GEOID18 height accuracy estimate available here.
 JV1474
 JV1474.Click photographs - Photos may exist for this station.
 JV1474
 JV1474.The dynamic height is computed by dividing the NAVD 88
 JV1474.geopotential number by the normal gravity value computed on the
 JV1474.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1474.degrees latitude (g = 980.6199 gals.).
 JV1474
 JV1474.The modeled gravity was interpolated from observed gravity values.
 JV1474
 JV1474;                    North         East    Units  Estimated Accuracy
 JV1474;SPC MD       -   208,750.      428,680.      MT  (+/- 180 meters Scaled)
 JV1474
 JV1474_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ568787(NAD 83)
 JV1474
 JV1474                          SUPERSEDED SURVEY CONTROL
 JV1474
 JV1474  NGVD 29 (11/26/84)  107.537  (m)          352.81   (f) ADJUSTED    2 0
 JV1474
 JV1474.Superseded values are not recommended for survey control.
 JV1474
 JV1474.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1474.See file dsdata.pdf to determine how the superseded data were derived.
 JV1474
 JV1474_MARKER: DZ = AZIMUTH MARK DISK
 JV1474_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1474_SP_SET: BRIDGE WALKWAY
 JV1474_STAMPING: BIRCH 1959
 JV1474_MARK LOGO: CGS
 JV1474_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1474
 JV1474  HISTORY     - Date     Condition        Report By
 JV1474  HISTORY     - 1959     MONUMENTED       CGS
 JV1474  HISTORY     - 20010827 MARK NOT FOUND   MDSHA
 JV1474
 JV1474                          STATION DESCRIPTION
 JV1474
 JV1474'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1474'4.9 MI NW FROM MARBLE HILL.
 JV1474'1.0 MILE WEST ALONG SHAWAN ROAD FROM ITS JUNCTION WITH STATE
 JV1474'HIGHWAY 45 AT MARBLE HILL, THENCE 3.9 MILES NORTH ALONG NEW U.S.
 JV1474'HIGHWAY 111, ON THE TOP OF THE SOUTH END OF THE EAST CONCRETE
 JV1474'WALKWAY OF THE U.S. HIGHWAY 111 BRIDGE OVER BELFAST ROAD, 16 1/2
 JV1474'FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 1.7 FEET NORTH OF
 JV1474'THE SOUTH END OF THE WALKWAY AND 1 FOOT ABOVE THE LEVEL OF THE
 JV1474'HIGHWAY.
 JV1474
 JV1474                          STATION RECOVERY (2001)
 JV1474
 JV1474'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1474'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1591 ***********************************************************************
 HU1591  DESIGNATION -  BIRCH MSFC 1907
 HU1591  PID         -  HU1591
 HU1591  STATE/COUNTY-  MD/WORCESTER
 HU1591  COUNTRY     -  US
 HU1591  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1591
 HU1591                         *CURRENT SURVEY CONTROL
 HU1591  ______________________________________________________________________
 HU1591* NAD 83(1991) POSITION- 38 12 51.28936(N) 075 11 44.22499(W)   ADJUSTED
 HU1591* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU1591  ______________________________________________________________________
 HU1591  GEOID HEIGHT    -        -36.196 (meters)                     GEOID18
 HU1591  LAPLACE CORR    -         -0.06  (seconds)                    DEFLEC18
 HU1591  HORZ ORDER      -  THIRD
 HU1591
 HU1591.The horizontal coordinates were established by classical geodetic methods
 HU1591.and adjusted by the National Geodetic Survey in January 1992.
 HU1591
 HU1591.The orthometric height was scaled from a topographic map.
 HU1591
 HU1591.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1591.GEOID18 height accuracy estimate available here.
 HU1591
 HU1591.Click photographs - Photos may exist for this station.
 HU1591
 HU1591.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1591
 HU1591. The following values were computed from the NAD 83(1991) position.
 HU1591
 HU1591;                    North         East     Units Scale Factor Converg.
 HU1591;SPC MD       -    62,345.761   558,013.364   MT  1.00001602   +1 07 57.0
 HU1591;SPC MD       -   204,546.05  1,830,748.85   sFT  1.00001602   +1 07 57.0
 HU1591;UTM  18      - 4,229,604.693   482,875.337   MT  0.99960361   -0 07 15.6
 HU1591
 HU1591!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1591!SPC MD       -   1.00000540  x   1.00001602  =   1.00002142
 HU1591!UTM  18      -   1.00000540  x   0.99960361  =   0.99960901
 HU1591
 HU1591:                Primary Azimuth Mark                     Grid Az
 HU1591:SPC MD       -  NORTH BEACH LSS                          114 49 17.1
 HU1591:UTM  18      -  NORTH BEACH LSS                          116 04 29.7
 HU1591
 HU1591_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8287529604(NAD 83)
 HU1591
 HU1591|---------------------------------------------------------------------|
 HU1591| PID    Reference Object                     Distance      Geod. Az  |
 HU1591|                                                           dddmmss.s |
 HU1591| HU1597 NORTH BEACH LSS                     APPROX. 3.9 KM 1155714.1 |
 HU1591|---------------------------------------------------------------------|
 HU1591
 HU1591                          SUPERSEDED SURVEY CONTROL
 HU1591
 HU1591  NAD 83(1986)-  38 12 51.27538(N)    075 11 44.25823(W) AD(       ) 3
 HU1591  NAD 27      -  38 12 50.85134(N)    075 11 45.57104(W) AD(       ) 3
 HU1591  USSD        -  38 12 51.01200(N)    075 11 45.34500(W) AD(       ) 3
 HU1591
 HU1591.Superseded values are not recommended for survey control.
 HU1591
 HU1591.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1591.See file dsdata.pdf to determine how the superseded data were derived.
 HU1591
 HU1591_MARKER: H = DRILL HOLE
 HU1591_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1591_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1591+STABILITY: SURFACE MOTION
 HU1591
 HU1591  HISTORY     - Date     Condition        Report By
 HU1591  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1591  HISTORY     - 1933     MARK NOT FOUND   CGS
 HU1591  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1591
 HU1591                          STATION DESCRIPTION
 HU1591
 HU1591'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1591'ON THE SOUTHERN PART OF SINEPUXENT NECK, BETWEEN SINEPUXENT BAY AND
 HU1591'NEWPORT BAY, ABOUT 1/2 MILE NNW OF SOUTH POINT, ON THE NW AND
 HU1591'HIGHER OF TWO KNOLLS ABOUT 20 FEET ABOVE HIGH-WATER MARK, 600
 HU1591'YARDS E OF ISLAND POINT, 200 YARDS NE OF SHORE OF UPPER
 HU1591'CHINCOTEAGUE BAY, 75 YARDS ESE OF WHERE A DITCH AND FENCE MEET,
 HU1591'AND ABOUT 400 YARDS SW OF A HOUSE AND BARN.
 HU1591'
 HU1591'STATION MARK IS CENTER OF STANDARD CEMENT MONUMENT OF THE
 HU1591'MARYLAND SHELL FISH SURVEY WHICH PROJECTS 3 TO 5 INCHES ABOVE
 HU1591'THE SURFACE WHICH IS MADE OF CONCRETE 2
 HU1591'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1591'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1591'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1591'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1591'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1591'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1591'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1591'THE LOCATION OF THE STATION.
 HU1591'
 HU1591'DISTANCES AND AZIMUTHS TO VARIOUS POINTS OF REFERENCE ARE AS
 HU1591'FOLLOWS--NAIL IN BLAZE IN 20-INCH WALNUT TREE, 28.61 METERS
 HU1591'(93.9 FEET) S 73 DEG 23 MI WN.  CEDAR TREE, 80 YARDS, S 89 DEG
 HU1591'48 MIN W.  JONES WINDMILL, 3-1/2 MILES, N 84 DEG 24 MIN W.  NAIL IN
 HU1591'BLAZE IN WALNUT TREE, 25.52 METERS (83.7 FEET) N 65 DEG 17 MIN W.
 HU1591'CHIMNEY OF HOUSE NEAR STATION NEWPORT, 2-1/2 MILES,
 HU1591'N 48 DEG 01 MIN W.  HOLLY TREE, 150 YARDS, N 25 DEG 06 MIN E.  CEDAR
 HU1591'TREE NEAR BIRCH FARM BUILDINGS, 300 YARDS, N 53 DEG 07 MIN E.
 HU1591'CHIMNEY OF BIRCHS FARMHOUSE, 300 YARDS, N 60 DEG 41 MIN E.  CEDAR
 HU1591'TREE, 195 YARDS, S 81 DEG 54 MIN E.  CHIMNEY OF HOTEL NEAR NORTH
 HU1591'BEACH LIFE SAVING STATION, 2-1/2 MILES, S 52 DEG 02 MIN E.  NAIL
 HU1591'IN BLAZE OF WALNUT TREE, 12.72 METERS (41.7 FEET) S 20 DEG 17 MIN E.
 HU1591
 HU1591                          STATION RECOVERY (1933)
 HU1591
 HU1591'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (IER)
 HU1591'TRIANGULATION-STATION MARK FOUND DUG UP AND ON ITS SIDE.  THE
 HU1591'TREES MENTIONED IN DESCRIPTION HAD BEEN CUT DOWN.  STATION
 HU1591'LOST.  STATION BIRCH 2 ESTABLISHED.
 HU1591
 HU1591                          STATION RECOVERY (1962)
 HU1591
 HU1591'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1591'STATION FOUND DESTROYED BY I.E.R. IN 1933 AND NEW STATION BIRCH
 HU1591'2 WAS ESTABLISHED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0426 ***********************************************************************
 JV0426  DESIGNATION -  BIRD
 JV0426  PID         -  JV0426
 JV0426  STATE/COUNTY-  MD/BALTIMORE
 JV0426  COUNTRY     -  US
 JV0426  USGS QUAD   -  WHITE MARSH (2016)
 JV0426
 JV0426                         *CURRENT SURVEY CONTROL
 JV0426  ______________________________________________________________________
 JV0426* NAD 83(1991) POSITION- 39 24 03.27556(N) 076 25 01.26674(W)   ADJUSTED
 JV0426* NAVD 88 ORTHO HEIGHT -    66.651 (meters)      218.67  (feet) ADJUSTED
 JV0426  ______________________________________________________________________
 JV0426  GEOID HEIGHT    -        -32.951 (meters)                     GEOID18
 JV0426  LAPLACE CORR    -         -3.89  (seconds)                    DEFLEC18
 JV0426  DYNAMIC HEIGHT  -         66.616 (meters)      218.56  (feet) COMP
 JV0426  MODELED GRAVITY -    980,108.3   (mgal)                       NAVD 88
 JV0426
 JV0426  HORZ ORDER      -  THIRD
 JV0426  VERT ORDER      -  FIRST     CLASS I
 JV0426
 JV0426.The horizontal coordinates were established by classical geodetic methods
 JV0426.and adjusted by the National Geodetic Survey in January 1992.
 JV0426
 JV0426.The orthometric height was determined by differential leveling and
 JV0426.adjusted by the NATIONAL GEODETIC SURVEY
 JV0426.in June 1991.
 JV0426
 JV0426.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0426.GEOID18 height accuracy estimate available here.
 JV0426
 JV0426.Click photographs - Photos may exist for this station.
 JV0426
 JV0426.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0426
 JV0426.The dynamic height is computed by dividing the NAVD 88
 JV0426.geopotential number by the normal gravity value computed on the
 JV0426.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0426.degrees latitude (g = 980.6199 gals.).
 JV0426
 JV0426.The modeled gravity was interpolated from observed gravity values.
 JV0426
 JV0426. The following values were computed from the NAD 83(1991) position.
 JV0426
 JV0426;                    North         East     Units Scale Factor Converg.
 JV0426;SPC MD       -   192,673.857   450,214.602   MT  0.99999178   +0 21 57.2
 JV0426;SPC MD       -   632,130.81  1,477,079.07   sFT  0.99999178   +0 21 57.2
 JV0426;UTM  18      - 4,362,225.289   377,990.884   MT  0.99978328   -0 53 58.4
 JV0426
 JV0426!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0426!SPC MD       -   0.99999471  x   0.99999178  =   0.99998649
 JV0426!UTM  18      -   0.99999471  x   0.99978328  =   0.99977799
 JV0426
 JV0426:                Primary Azimuth Mark                     Grid Az
 JV0426:SPC MD       -  BIRD AZ MK                               285 28 19.3
 JV0426:UTM  18      -  BIRD AZ MK                               286 44 14.9
 JV0426
 JV0426_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7799062225(NAD 83)
 JV0426
 JV0426|---------------------------------------------------------------------|
 JV0426| PID    Reference Object                     Distance      Geod. Az  |
 JV0426|                                                           dddmmss.s |
 JV0426| JV0427 BIRD RM 1                            15.794 METERS 11306     |
 JV0426| CA9973 BIRD AZ MK                                         2855016.5 |
 JV0426| JV0425 BIRD RM 2                            21.104 METERS 32942     |
 JV0426|---------------------------------------------------------------------|
 JV0426
 JV0426                          SUPERSEDED SURVEY CONTROL
 JV0426
 JV0426  NAD 83(1986)-  39 24 03.26992(N)    076 25 01.27548(W) AD(       ) 3
 JV0426  NAD 27      -  39 24 02.88140(N)    076 25 02.41750(W) AD(       ) 3
 JV0426  NGVD 29              66.89   (m)          219.5    (f) LEVELING    3  
 JV0426  NGVD 29 (11/26/84)   66.894  (m)          219.47   (f) ADJUSTED    1 1
 JV0426
 JV0426.Superseded values are not recommended for survey control.
 JV0426
 JV0426.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0426.See file dsdata.pdf to determine how the superseded data were derived.
 JV0426
 JV0426_STAMPING: BIRD 1958
 JV0426_MARK LOGO: CGS
 JV0426
 JV0426  HISTORY     - Date     Condition        Report By
 JV0426  HISTORY     - 1958     MONUMENTED       CGS
 JV0426  HISTORY     - 1971     GOOD             NGS
 JV0426  HISTORY     - 1971     GOOD             NGS
 JV0426  HISTORY     - 1976     GOOD             NGS
 JV0426  HISTORY     - 1983     GOOD             USPSQD
 JV0426  HISTORY     - 19950725 MARK NOT FOUND   USPSQD
 JV0426  HISTORY     - 20100628 MARK NOT FOUND   MDSHA
 JV0426
 JV0426                          STATION DESCRIPTION
 JV0426
 JV0426'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0426'THE STATION IS ABOUT 6-1/2 MILES WEST-NORTHWEST OF EDGEWOOD, ABOUT
 JV0426'1-1/2 MILES NORTHEAST OF WHITE MARSH AND ABOUT 100 YARDS SOUTH OF
 JV0426'STATE HIGHWAY 7.  IT IS 27 FEET WEST OF A TRIANGLE-BLAZED TREE.
 JV0426'THE MARK IS A STANDARD TRIANGULATION STATION MARK DISK SET IN A
 JV0426'12X12 CONCRETE POST SET FLUSH AND THE DISK IS STAMPED BIRD 1958.
 JV0426'
 JV0426'REFERENCE MARK NO. 1 IS 42-1/2 FEET SOUTH OF TRIANGLE-BLAZED TREE
 JV0426'AND 4 FEET WEST OF EDGE OF WOODS.  THE MARK IS STANDARD REFERENCE
 JV0426'MARK DISK SET IN A 12X12 INCH CONCRETE POST PROJECTING ABOUT 4
 JV0426'INCHES AND THE DISK IS STAMPED BIRD NO 1 1958.
 JV0426'
 JV0426'REFERENCE MARK NO. 2 IS 3 FEET WEST OF EDGE OF WOODS.  THE MARK IS
 JV0426'A STANDARD REFERENCE MARK DISK SET IN A 12X12 INCH CONCRETE POST
 JV0426'PROJECTING ABOUT 4 INCHES AND THE DISK IS STAMPED BIRD NO 2 1958.
 JV0426'
 JV0426'AZIMUTH MARK IS 61 FEET SOUTHEAST OF THE CENTER OF DRIVEWAY AND 2
 JV0426'FEET EAST-SOUTHEAST OF SOUTHEAST CORNER OF SMALL BUILDING.  THE
 JV0426'MARK IS A STANDARD AZIMUTH MARK DISK SET IN A 12X12 INCH CONCRETE
 JV0426'POST WHICH IS SET FLUSH AND THE DISK IS STAMPED BIRD 1958.
 JV0426'
 JV0426'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV0426'STATE HIGHWAY 152, GO NORTH ON STATE HIGHWAY 152 FOR 0.65 MILE TO
 JV0426'JUNCTION OF STATE HIGHWAY 7, TURN LEFT AND GO WESTERLY ON STATE
 JV0426'HIGHWAY 7 FOR 3.7 MILES TO BRIDGE OVER THE GUNPOWDER FALLS RIVER,
 JV0426'CONTINUE WESTERLY ON STATE HIGHWAY 7 FOR 1.1 MILES TO MR. HOLTERS
 JV0426'MAIL BOX AND FARM ON LEFT, TURN LEFT INTO DRIVEWAY THEN LEFT AGAIN
 JV0426'AND FOLLOW EDGE OF OPEN FIELD EAST FOR ABOUT 25 YARDS TO EDGE OF
 JV0426'WOODS, TURN RIGHT AND GO SOUTH ALONG EDGE OF WOODS FOR ABOUT 75
 JV0426'YARDS TO THE STATION AS DESCRIBED.
 JV0426'
 JV0426'TO REACH THE AZIMUTH MARK FROM THE STATION, FOLLOW EDGE OF WOODS
 JV0426'AND OPEN FIELD BACK TO DRIVEWAY.  GO WESTERLY ON STATE HIGHWAY 7
 JV0426'FOR 0.7 MILE TO THE JUNCTION OF JOPPA ROAD, TURN RIGHT AND GO
 JV0426'NORTH ON JOPPA ROAD FOR 1.2 MILES TO SIDE ROAD RIGHT, TURN SHARP
 JV0426'RIGHT AND GO EAST-SOUTHEAST ON GERST ROAD FOR 0.2 MILE TO T ROAD
 JV0426'RIGHT, TURN RIGHT AND FOLLOW GRAVEL ROAD SOUTHEAST FOR 0.3 MILE TO
 JV0426'FARM HOUSE AND AZIMUTH MARK AT SOUTHEAST CORNER OF SMALL BUILDING
 JV0426'WHICH IS JUST SOUTHEAST OF THE HOUSE.
 JV0426'
 JV0426'AZIMUTH MARK IS VISIBLE FROM THE GROUND.
 JV0426'
 JV0426'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV0426
 JV0426                          STATION RECOVERY (1971)
 JV0426
 JV0426'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 JV0426'THE STATION MARK AND RMS 1 AND 2 WERE RECOVERED IN GOOD CONDITION.
 JV0426'TO REACH THE STATION FROM THE JUNIOR HIGH SCHOOL AT GOLDEN RING GO
 JV0426'ABOUT 6.8 MILES NORTHEAST ALONG STATE HIGHWAY 7, IN AN OPEN FIELD
 JV0426'AND NEAR THE SOUTHWEST EDGE OF A LARGE WOODED AREA AROUND HOLTZERS
 JV0426'INN, 301 FEET SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, 250
 JV0426'FEET SOUTHWEST OF THE SOUTH CORNER OF THE INN, 27 FEET WEST OF A
 JV0426'30-INCH OAK TREE WHICH BEARS A BLAZE, 1.5 FEET NORTHWEST OF A
 JV0426'METAL WITNESS POST, AND SET IN THE TOP OF A CONCRETE POST
 JV0426'PROJECTING 1 INCH.  DISK IS STAMPED BIRD 1958.
 JV0426'
 JV0426'RM 1, STAMPED BIRD NO 1 1958, IS 51.8 FEET SOUTHEAST OF THE
 JV0426'STATION MARK, 353 FEET SOUTHEAST OF THE CENTER LINE OF THE
 JV0426'HIGHWAY, 42 FEET SOUTH OF A 30-INCH OAK TREE WHICH BEARS A BLAZE,
 JV0426'1.0 FOOT NORTHWEST OF A METAL WITNESS POST, AND SET IN THE TOP OF
 JV0426'A CONCRETE POST PROJECTING 1 INCH.
 JV0426'
 JV0426'RM 2, STAMPED BIRD NO 2 1958, IS 69.2 FEET NORTHWEST OF THE
 JV0426'STATION MARK, 232 FEET SOUTHEAST OF THE CENTER LINE OF THE
 JV0426'HIGHWAY, 1.5 FEET NORTHWEST OF A METAL WITNESS POST, AND SET IN
 JV0426'THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
 JV0426'
 JV0426'NOTE--THIS STATION MAY ALSO BE REACHED BY GOING ABOUT 5.0 MILES
 JV0426'SOUTHWEST ALONG STATE HIGHWAY 7 FROM THE TRINITY LUTHERAN CHURCH
 JV0426'AND CEMETERY AT JOPPA.
 JV0426'
 JV0426'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 6.8 MILES
 JV0426'NORTHEAST OF GOLDEN RING.
 JV0426
 JV0426                          STATION RECOVERY (1971)
 JV0426
 JV0426'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0426'6.8 MI NE FROM GOLDEN RING.
 JV0426'ABOUT 6.8 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE JUNIOR
 JV0426'HIGH SCHOOL AT GOLDEN RING, IN AN OPEN FIELD AND NEAR THE
 JV0426'SOUTHWEST EDGE OF A WOODED AREA AROUND HOLTZERS INN, 301 FEET
 JV0426'SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, 250 FEET SOUTHWEST
 JV0426'OF THE SOUTH CORNER OF THE INN, 27 FEET WEST OF A 30-INCH OAK
 JV0426'TREE WHICH BEARS A BLAZE, 1.5 FEET NORTHWEST OF A METAL WITNESS
 JV0426'POST, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
 JV0426'NOTE-- THIS MARK IS ALSO 5.0 MILES SOUTHWEST ALONG STATE HIGHWAY
 JV0426'7 FROM THE TRINITY LUTHERAN CHURCH AND CEMETERY AT JOPPA.
 JV0426
 JV0426                          STATION RECOVERY (1976)
 JV0426
 JV0426'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JV0426'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV0426'CONDITION AS PREVIOUSLY DESCRIBED.
 JV0426'
 JV0426'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 1-1/2 MILES
 JV0426'NORTHEAST OF WHITE MARSH.
 JV0426
 JV0426                          STATION RECOVERY (1983)
 JV0426
 JV0426'RECOVERY NOTE BY US POWER SQUADRON 1983 (CSR)
 JV0426'BIRD 1958 RECOVERED GOOD.
 JV0426'
 JV0426'ALTHOUGH DIRECTIONS WERE ADEQUATE SOME DIFFICULTY WAS ENCOUNTERED
 JV0426'SINCE THE AREA HAS CHANGED THE GRAVEL ROAD DESCRIBED ONLY RUNS FOR
 JV0426'ABOUT .02 MIL AND HAS BEEN RESURFACED - CHANGE DIRECTIONS TO READ
 JV0426'FROM JUNCTION OF JOPPA ROAD AND ROUTE 7 (ST HIWAY) - GO NORTH ON
 JV0426'JOPPA ROAD FOR 1.0 MILES TO SIDE ROAD RT.  TURN RIGHT AND GO
 JV0426'EAST-SOUTHEAST ON NEW GERST ROAD TO DEAD END AT MAIL BOX FOR
 JV0426'FARM OF MR. W. OREM.  AZIMUTH MARK IS JUST SOUTHEAST OF HOUSE OR
 JV0426'IN SIDE YARD TO RIGHT S.E. OF HOUSE.  AZIMUTH MARK IS VISIBLE FROM
 JV0426'GROUND.
 JV0426
 JV0426                          STATION RECOVERY (1995)
 JV0426
 JV0426'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0426'MARK NOT FOUND.
 JV0426
 JV0426                          STATION RECOVERY (2010)
 JV0426
 JV0426'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (DCS)
 JV0426'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6066 ***********************************************************************
 JV6066  DESIGNATION -  BIRD
 JV6066  PID         -  JV6066
 JV6066  STATE/COUNTY-  MD/CARROLL
 JV6066  COUNTRY     -  US
 JV6066  USGS QUAD   -  FINKSBURG (2016)
 JV6066
 JV6066                         *CURRENT SURVEY CONTROL
 JV6066  ______________________________________________________________________
 JV6066* NAD 83(1991) POSITION- 39 29 24.38259(N) 076 58 23.17783(W)   ADJUSTED
 JV6066* NAVD 88 ORTHO HEIGHT -   255.    (meters)      837.    (feet) SCALED
 JV6066  ______________________________________________________________________
 JV6066  GEOID HEIGHT    -        -32.034 (meters)                     GEOID18
 JV6066  LAPLACE CORR    -          0.40  (seconds)                    DEFLEC18
 JV6066  HORZ ORDER      -  SECOND
 JV6066
 JV6066.The horizontal coordinates were established by classical geodetic methods
 JV6066.and adjusted by the National Geodetic Survey in January 1992.
 JV6066
 JV6066.The orthometric height was scaled from a topographic map.
 JV6066
 JV6066.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6066.GEOID18 height accuracy estimate available here.
 JV6066
 JV6066.Click photographs - Photos may exist for this station.
 JV6066
 JV6066.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6066
 JV6066. The following values were computed from the NAD 83(1991) position.
 JV6066
 JV6066;                    North         East     Units Scale Factor Converg.
 JV6066;SPC MD       -   202,416.792   402,313.680   MT  1.00000726   +0 01 00.8
 JV6066;SPC MD       -   664,095.76  1,319,924.13   sFT  1.00000726   +0 01 00.8
 JV6066;UTM  18      - 4,373,024.869   330,323.848   MT  0.99995447   -1 15 18.3
 JV6066
 JV6066!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6066!SPC MD       -   0.99996505  x   1.00000726  =   0.99997231
 JV6066!UTM  18      -   0.99996505  x   0.99995447  =   0.99991952
 JV6066
 JV6066:                Primary Azimuth Mark                     Grid Az
 JV6066:SPC MD       -  BIRD AZ MK                               192 01 12.8
 JV6066:UTM  18      -  BIRD AZ MK                               193 17 31.9
 JV6066
 JV6066_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3032373024(NAD 83)
 JV6066
 JV6066|---------------------------------------------------------------------|
 JV6066| PID    Reference Object                     Distance      Geod. Az  |
 JV6066|                                                           dddmmss.s |
 JV6066| CA9971 BIRD RM 1                            27.121 METERS 03810     |
 JV6066| CA9972 BIRD RM 2                            50.915 METERS 12216     |
 JV6066| CA9970 BIRD AZ MK                                         1920213.6 |
 JV6066|---------------------------------------------------------------------|
 JV6066
 JV6066                          SUPERSEDED SURVEY CONTROL
 JV6066
 JV6066  NAD 83(1986)-  39 29 24.38158(N)    076 58 23.18447(W) AD(       ) 2
 JV6066  NAD 27      -  39 29 24.01700(N)    076 58 24.25100(W) AD(       ) 2
 JV6066
 JV6066.Superseded values are not recommended for survey control.
 JV6066
 JV6066.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6066.See file dsdata.pdf to determine how the superseded data were derived.
 JV6066
 JV6066_MARKER: DS = TRIANGULATION STATION DISK
 JV6066_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6066_STAMPING: BIRD 1943
 JV6066_MARK LOGO: CGS
 JV6066_PROJECTION: RECESSED
 JV6066_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6066+STABILITY: SURFACE MOTION
 JV6066
 JV6066  HISTORY     - Date     Condition        Report By
 JV6066  HISTORY     - 1943     MONUMENTED       CGS
 JV6066  HISTORY     - 1973     SEE DESCRIPTION  NGS
 JV6066  HISTORY     - 1975     GOOD             NGS
 JV6066
 JV6066                          STATION DESCRIPTION
 JV6066
 JV6066'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV6066'THE STATION IS LOCATED ABOUT 6 MILES S OF WESTMINSTER AND 2.8
 JV6066'MILES N OF THE VILLAGE OF GAMBIA, ON LAND OWNED BY O.A. SHIPLEY
 JV6066'AND OCCUPIED BY W. SWARTZBAUGH.  IT IS 10 FEET S OF A HEDGE-ROW,
 JV6066'55 FEET S OF THE SE CORNER OF THE PORCH, 50 FEET SW OF A 3-FOOT
 JV6066'MAPLE TREE, 63 FEET W OF THE CENTER OF STATE HIGHWAY 32 AND 26.4
 JV6066'FEET ESE OF A LONE 10-INCH CHERRY TREE.  IT IS STAMPED BIRD 1943
 JV6066'AND PROJECTS 1 INCH.
 JV6066'
 JV6066'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV6066'DISKS SET IN CONCRETE.
 JV6066'
 JV6066'REFERENCE MARK NO.1 IS NE OF THE STATION, 17.5 FEET E OF THE
 JV6066'CENTER OF STATE HIGHWAY 32, 50 FEET S OF A POWER-LINE POLE.  IT
 JV6066'IS STAMPED BIRD NO.1 1943 AND PROJECTS 12 INCHES.
 JV6066'
 JV6066'REFERENCE MARK NO.2 IS SE OF THE STATION, 15 FEET E OF THE
 JV6066'CENTER OF STATE HIGHWAY 32 AND 55 FEET NNW OF A POWER-LINE POLE.  IT
 JV6066'IS STAMPED BIRD NO.2 1943 AND PROJECTS 4 INCHES.
 JV6066'
 JV6066'THE AZIMUTH MARK IS 0.3 MILE, AIR LINE, SSW OF THE STATION, 2.4
 JV6066'FEET NW OF A POWER-LINE POLE, 10 FEET E OF THE CENTER OF A
 JV6066'GRAVEL ROAD.  IT IS STAMPED BIRD 1943 AND PROJECTS 5 INCHES.  TO
 JV6066'REACH FROM THE STATION GO SE FOR 0.15 MILE TO A GRAVEL ROAD
 JV6066'PASSING BETWEEN A GARAGE AND FARMHOUSE.  TURN RIGHT AND GO
 JV6066'0.2 MILE TO A FORKS.  TAKE THE LEFT FORK AND GO 0.1 MILE TO THE
 JV6066'AZIMUTH MARK ON THE LEFT.
 JV6066'
 JV6066'TO REACH THE STATION FROM THE T-INTERSECTION IN GAMBIA GO
 JV6066'NORTHERLY ON STATE HIGHWAY 32 FOR 2.8 MILES TO THE STATION.
 JV6066'
 JV6066'A 100-FOOT LIGHT AT HAMMOND 1933 IS VISIBLE FROM THE GROUND.
 JV6066'
 JV6066'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT CROSS 1933.
 JV6066'
 JV6066'A 113-FOOT LIGHT AT ELDER IS VISIBLE FROM THE GROUND.
 JV6066'
 JV6066'A 100-FOOT LIGHT AT DAY IS VISIBLE FROM THE GROUND.
 JV6066'
 JV6066'A 113-FOOT LIGHT AT TAYLOR IS VISIBLE FROM THE GROUND.
 JV6066'
 JV6066'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV6066
 JV6066                          STATION RECOVERY (1973)
 JV6066
 JV6066'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (LFS)
 JV6066'THE STATION SURFACE DISK WAS FOUND TO BE DESTROYED.  THE
 JV6066'SUB-SURFACE DISK WAS FOUND IN GOOD CONDITION.  A NEW SURFACE DISK
 JV6066'WAS ESTABLISHED AT THIS DATE.  REFERENCE MARK ONE WAS RECOVERED
 JV6066'BUT THE ARROW WAS POINTING IN THE OPPOSITE DIRECTION.  A
 JV6066'DIFFERENCE OF 2.27 FEET IN DISTANCE AND 28 MINUTES DIFFERENCE IN
 JV6066'DIRECTION WAS NOTED TO IT.  IT IS BELIEVED THIS MARK WAS RESET
 JV6066'BY SOME ORGANIZATION PRIOR TO THIS DATE.  REFERENCE MARK TWO
 JV6066'WAS RECOVERED AND FOUND IN GOOD CONDITION.  THE DISTANCE AND
 JV6066'DIRECTION TO REFERENCE MARK TWO WAS WITHIN CLOSE AGREEMENT
 JV6066'WITH THE 1943 OBSERVATIONS.  THE AZIMUTH MARK WAS RECOVERED
 JV6066'AND FOUND IN GOOD CONDITION.
 JV6066'
 JV6066'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV6066'
 JV6066'THE STATION IS LOCATED ABOUT 8 MILES SOUTH OF WESTMINSTER, 3
 JV6066'MILES NORTH OF GAMBER AND JUST WEST OF STATE HIGHWAY 32.  THE
 JV6066'PROPERTY IS OWNED BY MR. JOHN C. WIKE.  MR. WIKE LIVES IN THE
 JV6066'FIRST HOUSE TO THE NORTH OF THE STATION.
 JV6066'
 JV6066'TO REACH THE STATION FROM THE INTERSECTION OF DEER PARK ROAD AND
 JV6066'STATE HIGHWAY 32 AT THE UNITED METHODIST CHURCH OF DEER PARK IN
 JV6066'THE SMALL VILLAGE OF DEER PARK.  GO SOUTHERLY ON STATE HIGHWAY
 JV6066'32 FOR 1.6 MILES TO THE STATION ON THE RIGHT, WEST SIDE OF THE
 JV6066'ROAD.
 JV6066'
 JV6066'THE STATION SURFACE DISK IS SET IN THE TOP OF A 16-INCH MASS OF
 JV6066'CONCRETE WHICH IS 16 INCHES BELOW THE SURFACE OF THE GROUND AND
 JV6066'IT IS STAMPED BIRD 1943 1973.  THE SUB-SURFACE IS SET IN THE TOP
 JV6066'OF A 8-INCH MASS OF CONCRETE 36 INCHES BELOW THE SURFACE AND IT IS
 JV6066'STAMPED BIRD 1943.  THE STATION MARKS ARE 63 FEET WEST OF THE
 JV6066'CENTER LINE OF STATE HIGHWAY 32, 62 FEET NORTHWEST OF A POWERLINE
 JV6066'POLE NUMBER 494, 50 FEET SOUTH OF THE SOUTH WALL OF MR. WIKES
 JV6066'HOUSE AND IN THE NORTHWEST EDGE OF A SMALL CULTIVATED FIELD.
 JV6066'
 JV6066'REFERENCE MARK 1 IS A STANDARD DISK WITH THE ARROW POINTING IN
 JV6066'THE OPPOSITE DIRECTION FROM THE STATION.  IT IS SET IN THE TOP OF
 JV6066'A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS 2 INCHES.  IT
 JV6066'IS STAMPED BIRD NO 1 1943.  IT IS 100 FEET NORTH OF THE CENTER
 JV6066'OF A DRIVE WAY, 47 FEET SOUTH OF A POWERLINE POLE NUMBERED
 JV6066'384177 AND 19 FEET EAST OF THE CENTER LINE OF STATE HIGHWAY 32.
 JV6066'
 JV6066'REFERENCE MARK 2 IS A STANDARD DISK SET IN THE TOP OF A 12-INCH
 JV6066'SQUARE CONCRETE MONUMENT WHICH PROJECTS 8 INCHES.  IT IS STAMPED
 JV6066'BIRD NO 2 1943.  THE MONUMENT IS 15.7 FEET EAST OF THE CENTER LINE
 JV6066'OF STATE HIGHWAY 32 AND 3 FEET NORTH OF A POWERLINE POLE NUMBER 67478.
 JV6066'
 JV6066'THE AZIMUTH MARK IS A STANDARD DISK STAMPED BIRD 1943, SET IN
 JV6066'THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV6066'8-INCHES.  IT IS 14 FEET EAST OF THE CENTER OF NICHOLSON ROAD,
 JV6066'5 FEET NORTH OF A POWERLINE POLE, 4.2 FEET NORTH OF A UNDERGROUND
 JV6066'CABLE BOX AND 2 FEET SOUTH OF A WITNESS POST.
 JV6066'
 JV6066'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTH ON STATE
 JV6066'HIGHWAY 32 FOR 0.2 MILE TO NICODEMUS ROAD.  TURN RIGHT AND GO
 JV6066'WESTERLY ON NICODEMUS ROAD FOR 0.2 MILE TO NICHOLSON ROAD ON
 JV6066'THE LEFT.  TURN LEFT AND GO SOUTH ON NICHOLSON ROAD FOR 0.1
 JV6066'MILE TO THE MARK ON THE LEFT.
 JV6066'
 JV6066'NO WITNESS POST WAS SET AT THE STATION MARK AT THE PROPERTY
 JV6066'OWNERS REQUEST.  THE MARKS IS IN A CULTIVATED FIELD.
 JV6066'
 JV6066'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV6066'1-1/2 MILES S OF DEER PARK.
 JV6066
 JV6066                          STATION RECOVERY (1975)
 JV6066
 JV6066'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV6066'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV6066'CONDITION AS DESCRIBED IN THE PREVIOUS DESCRIPTION.  IT WAS
 JV6066'REPORTED THAT CONSTRUCTION WAS TAKING PLACE IN THE AREA OF THIS
 JV6066'STATION, HOWEVER NONE OF THE MARKS ARE IN ANY DANGER AT THIS
 JV6066'DATE.  THE CONSTRUCTION AREA IS ABOUT 150 YARDS FROM THE STATION.
 JV6066'
 JV6066'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV6066'6 MILES SOUTH OF WESTMINSTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0427 ***********************************************************************
 JV0427  DESIGNATION -  BIRD RM 1
 JV0427  PID         -  JV0427
 JV0427  STATE/COUNTY-  MD/BALTIMORE
 JV0427  COUNTRY     -  US
 JV0427  USGS QUAD   -  WHITE MARSH (2016)
 JV0427
 JV0427                         *CURRENT SURVEY CONTROL
 JV0427  ______________________________________________________________________
 JV0427* NAD 83(1986) POSITION- 39 24 03.08   (N) 076 25 00.66   (W)   HD_HELD1
 JV0427* NAVD 88 ORTHO HEIGHT -    66.698 (meters)      218.83  (feet) ADJUSTED
 JV0427  ______________________________________________________________________
 JV0427  GEOID HEIGHT    -        -32.952 (meters)                     GEOID18
 JV0427  DYNAMIC HEIGHT  -         66.663 (meters)      218.71  (feet) COMP
 JV0427  MODELED GRAVITY -    980,108.3   (mgal)                       NAVD 88
 JV0427
 JV0427  VERT ORDER      -  FIRST     CLASS I
 JV0427
 JV0427.The horizontal coordinates were determined by differentially corrected
 JV0427.hand held GPS observations or other comparable positioning techniques
 JV0427.and have an estimated accuracy of +/- 3 meters.
 JV0427
 JV0427.The orthometric height was determined by differential leveling and
 JV0427.adjusted by the NATIONAL GEODETIC SURVEY
 JV0427.in June 1991.
 JV0427
 JV0427.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0427.GEOID18 height accuracy estimate available here.
 JV0427
 JV0427.Click photographs - Photos may exist for this station.
 JV0427
 JV0427.The dynamic height is computed by dividing the NAVD 88
 JV0427.geopotential number by the normal gravity value computed on the
 JV0427.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0427.degrees latitude (g = 980.6199 gals.).
 JV0427
 JV0427.The modeled gravity was interpolated from observed gravity values.
 JV0427
 JV0427;                    North         East    Units  Estimated Accuracy
 JV0427;SPC MD       -   192,667.9     450,229.2     MT  (+/- 3 meters HH1 GPS) 
 JV0427
 JV0427_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7800562219(NAD 83)
 JV0427
 JV0427                          SUPERSEDED SURVEY CONTROL
 JV0427
 JV0427  NGVD 29 (11/26/84)   66.941  (m)          219.62   (f) ADJUSTED    1 1
 JV0427
 JV0427.Superseded values are not recommended for survey control.
 JV0427
 JV0427.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0427.See file dsdata.pdf to determine how the superseded data were derived.
 JV0427
 JV0427_STAMPING: BIRD NO 1 1958
 JV0427_MARK LOGO: CGS
 JV0427
 JV0427  HISTORY     - Date     Condition        Report By
 JV0427  HISTORY     - 1958     MONUMENTED       CGS
 JV0427  HISTORY     - 1971     GOOD             NGS
 JV0427  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 JV0427  HISTORY     - 19950725 MARK NOT FOUND   USPSQD
 JV0427  HISTORY     - 20100628 MARK NOT FOUND   MDSHA
 JV0427
 JV0427                          STATION DESCRIPTION
 JV0427
 JV0427'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0427'6.8 MI NE FROM GOLDEN RING.
 JV0427'ABOUT 6.8 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE JUNIOR
 JV0427'HIGH SCHOOL AT GOLDEN RING, IN AN OPEN FIELD AND NEAR THE
 JV0427'SOUTHWEST EDGE OF A WOODED AREA AROUND HOLTZERS INN, 353 FEET
 JV0427'SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, 42 FEET SOUTH OF A
 JV0427'30-INCH OAK TREE WHICH BEARS A BLAZE, 51.8 FEET SOUTHEAST OF
 JV0427'TRIANGULATION STATION BIRD, 1.0 FOOT NORTHWEST OF A METAL WITNESS
 JV0427'POST, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
 JV0427'NOTE-- THIS MARK IS ALSO 5.0 MILES SOUTHWEST ALONG STATE HIGHWAY
 JV0427'7 FROM THE TRINITY LUTHERAN CHURCH AND CEMETERY AT JOPPA.
 JV0427
 JV0427                          STATION RECOVERY (1983)
 JV0427
 JV0427'RECOVERY NOTE BY US POWER SQUADRON 1983 (CSR)
 JV0427'BIRD NO 1 NOT RECOVERED.
 JV0427'
 JV0427'THE AREA HAS UNDER GONE COMPLETE CHANGE -(THE OPEN FIELD WHERE THE
 JV0427'REFERENCE WAS MADE TO LOCATE BIRD 1, IS NOW OCCUPIED BY THE
 JV0427'PRECISION CONCRETE CO.(PHONE NO. 256 2800) A LARGE OFFICE BLDG,
 JV0427'WAREHOUSE AND GARAGE.  THE WOODED AREA REFERRED TO HAS BEEN
 JV0427'DRASTICALLY REDUCED AND IS A FIELD WHICH IS CLUTTERED WITH STEEL
 JV0427'BEAMS, CONCRETE FORMS, TIMBERS, MIXERS, AND GENERAL EQUIPMENT OF
 JV0427'THE CONCRETE BUSINESS.  THE HOLTZERS INN REFERRED TO IS NOW THE
 JV0427'RUSTIC INN.
 JV0427'
 JV0427'AN EXTENSIVE SEARCH OF THE AREA FAILED TO PRODUCE THE REFERENCE
 JV0427'MARK AND IT IS ASSUMED THAT IT HAS BEEN DESTROYED OR RELOCATED.
 JV0427
 JV0427                          STATION RECOVERY (1995)
 JV0427
 JV0427'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0427'MARK NOT FOUND.
 JV0427
 JV0427                          STATION RECOVERY (2010)
 JV0427
 JV0427'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (DCS)
 JV0427'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0425 ***********************************************************************
 JV0425  DESIGNATION -  BIRD RM 2
 JV0425  PID         -  JV0425
 JV0425  STATE/COUNTY-  MD/BALTIMORE
 JV0425  COUNTRY     -  US
 JV0425  USGS QUAD   -  WHITE MARSH (2016)
 JV0425
 JV0425                         *CURRENT SURVEY CONTROL
 JV0425  ______________________________________________________________________
 JV0425* NAD 83(1986) POSITION- 39 24 03.87   (N) 076 25 01.71   (W)   HD_HELD1
 JV0425* NAVD 88 ORTHO HEIGHT -    66.791 (meters)      219.13  (feet) ADJUSTED
 JV0425  ______________________________________________________________________
 JV0425  GEOID HEIGHT    -        -32.951 (meters)                     GEOID18
 JV0425  DYNAMIC HEIGHT  -         66.757 (meters)      219.02  (feet) COMP
 JV0425  MODELED GRAVITY -    980,108.3   (mgal)                       NAVD 88
 JV0425
 JV0425  VERT ORDER      -  FIRST     CLASS I
 JV0425
 JV0425.The horizontal coordinates were determined by differentially corrected
 JV0425.hand held GPS observations or other comparable positioning techniques
 JV0425.and have an estimated accuracy of +/- 3 meters.
 JV0425
 JV0425.The orthometric height was determined by differential leveling and
 JV0425.adjusted by the NATIONAL GEODETIC SURVEY
 JV0425.in June 1991.
 JV0425
 JV0425.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0425.GEOID18 height accuracy estimate available here.
 JV0425
 JV0425.Click photographs - Photos may exist for this station.
 JV0425
 JV0425.The dynamic height is computed by dividing the NAVD 88
 JV0425.geopotential number by the normal gravity value computed on the
 JV0425.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0425.degrees latitude (g = 980.6199 gals.).
 JV0425
 JV0425.The modeled gravity was interpolated from observed gravity values.
 JV0425
 JV0425;                    North         East    Units  Estimated Accuracy
 JV0425;SPC MD       -   192,692.1     450,203.9     MT  (+/- 3 meters HH1 GPS) 
 JV0425
 JV0425_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7798062243(NAD 83)
 JV0425
 JV0425                          SUPERSEDED SURVEY CONTROL
 JV0425
 JV0425  NGVD 29 (11/26/84)   67.035  (m)          219.93   (f) ADJUSTED    1 1
 JV0425
 JV0425.Superseded values are not recommended for survey control.
 JV0425
 JV0425.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0425.See file dsdata.pdf to determine how the superseded data were derived.
 JV0425
 JV0425_STAMPING: BIRD NO 2 1958
 JV0425_MARK LOGO: CGS
 JV0425
 JV0425  HISTORY     - Date     Condition        Report By
 JV0425  HISTORY     - 1958     MONUMENTED       CGS
 JV0425  HISTORY     - 1971     GOOD             NGS
 JV0425  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 JV0425  HISTORY     - 19950621 MARK NOT FOUND   USPSQD
 JV0425  HISTORY     - 19950725 MARK NOT FOUND   USPSQD
 JV0425  HISTORY     - 20100628 MARK NOT FOUND   MDSHA
 JV0425
 JV0425                          STATION DESCRIPTION
 JV0425
 JV0425'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0425'6.8 MI SE FROM GOLDEN RING.
 JV0425'ABOUT 6.8 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE JUNIOR
 JV0425'HIGH SCHOOL AT GOLDEN RING, IN AN OPEN FIELD AND NEAR THE SOUTHWEST
 JV0425'EDGE OF A LARGE WOODED AREA AROUND HOLTZERS INN, 232 FEET SOUTHEAST
 JV0425'OF THE CENTER LINE OF THE HIGHWAY, 69.2 FEET NORTHWEST OF
 JV0425'TRIANGULATION STATION BIRD, 1.5 FEET NORTHWEST OF A METAL WITNESS
 JV0425'POST, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
 JV0425'NOTE-- THIS MARK IS ALSO 5.0 MILES SOUTHWEST ALONG STATE HIGHWAY
 JV0425'7 FROM THE TRINITY LUTHERAN CHURCH AND CEMETERY AT JOPPA.
 JV0425
 JV0425                          STATION RECOVERY (1983)
 JV0425
 JV0425'RECOVERY NOTE BY US POWER SQUADRON 1983 (CSR)
 JV0425'BIRD NO 2 NOT RECOVERED.
 JV0425'
 JV0425'THE DIRECTIONS TO THE SITE WERE ADEQUATE - HOWEVER DRASTIC CHANGE
 JV0425'HAS OCCURED-THE OPEN FIELD IS NOW OCCUPIED BY A LARGE OFFICE
 JV0425'BUILDING, WAREHOUSE AND GARAGE OF THE PRECISION CONCRETE CO.
 JV0425'(PHONE NO.  256-2800)-THE WOODED AREA IS NOW A FIELD NEXT TO THE
 JV0425'COMPANY WHICH IS CLUTTERED WITH STEEL BEAMS CONCRETE FORMS,
 JV0425'TIMBERS, MIXER, TRUCKS AND GENERAL EQUIPMENT OF THE CONCRETE
 JV0425'BUSINESS THE HOLTZERS INN REFERRED TO IS NOW THE RUSTIC INN ALSO
 JV0425'THIS MARK WOULD BE LOCATED ON THE BOUNDRY OF THE PROPERTY OF THE
 JV0425'PRECISION CONCRETE CO AND A SMALL HOUSE AT 1410 PHILADELPHIA ROAD
 JV0425'(ROUTE NO. 7) WHERE A SMALL WOODS EXISTS - HOWEVER AN EXTENSIVE
 JV0425'SEARCH OF THE AREA FAILED TO PRODUCE THE MARK A RESIDENT OF THE
 JV0425'AREA REMEMBERS THE REFERENCE MARKS AND BELIEVES THEY WERE
 JV0425'DESTROYED BY THE CONCRETE CO. DURING CONSTRUCTION.
 JV0425
 JV0425                          STATION RECOVERY (1995)
 JV0425
 JV0425'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0425'MARK NOT FOUND.
 JV0425
 JV0425                          STATION RECOVERY (1995)
 JV0425
 JV0425'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0425'MARK NOT FOUND.
 JV0425
 JV0425                          STATION RECOVERY (2010)
 JV0425
 JV0425'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (DCS)
 JV0425'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1539 ***********************************************************************
 HU1539  DESIGNATION -  BISHOP
 HU1539  PID         -  HU1539
 HU1539  STATE/COUNTY-  MD/WORCESTER
 HU1539  COUNTRY     -  US
 HU1539  USGS QUAD   -  SELBYVILLE (2016)
 HU1539
 HU1539                         *CURRENT SURVEY CONTROL
 HU1539  ______________________________________________________________________
 HU1539* NAD 83(1991) POSITION- 38 25 34.59059(N) 075 13 16.75089(W)   ADJUSTED
 HU1539* NAVD 88 ORTHO HEIGHT -    14.    (meters)       46.    (feet) SCALED
 HU1539  ______________________________________________________________________
 HU1539  GEOID HEIGHT    -        -35.896 (meters)                     GEOID18
 HU1539  LAPLACE CORR    -         -0.45  (seconds)                    DEFLEC18
 HU1539  HORZ ORDER      -  SECOND
 HU1539
 HU1539.The horizontal coordinates were established by classical geodetic methods
 HU1539.and adjusted by the National Geodetic Survey in January 1992.
 HU1539
 HU1539.The orthometric height was scaled from a topographic map.
 HU1539
 HU1539.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1539.GEOID18 height accuracy estimate available here.
 HU1539
 HU1539.Click photographs - Photos may exist for this station.
 HU1539
 HU1539.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1539
 HU1539. The following values were computed from the NAD 83(1991) position.
 HU1539
 HU1539;                    North         East     Units Scale Factor Converg.
 HU1539;SPC MD       -    85,832.715   555,304.364   MT  0.99998043   +1 06 58.9
 HU1539;SPC MD       -   281,602.83  1,821,861.07   sFT  0.99998043   +1 06 58.9
 HU1539;UTM  18      - 4,253,136.045   480,681.727   MT  0.99960460   -0 08 15.2
 HU1539
 HU1539!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1539!SPC MD       -   1.00000347  x   0.99998043  =   0.99998390
 HU1539!UTM  18      -   1.00000347  x   0.99960460  =   0.99960807
 HU1539
 HU1539:                Primary Azimuth Mark                     Grid Az
 HU1539:SPC MD       -  BISHOP AZ MK                             080 29 32.0
 HU1539:UTM  18      -  BISHOP AZ MK                             081 44 46.1
 HU1539
 HU1539_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8068153136(NAD 83)
 HU1539
 HU1539|---------------------------------------------------------------------|
 HU1539| PID    Reference Object                     Distance      Geod. Az  |
 HU1539|                                                           dddmmss.s |
 HU1539| DC7836 BISHOP RM 1                          28.066 METERS 02044     |
 HU1539| DC7835 BISHOP AZ MK                                       0813630.9 |
 HU1539| DC7838 BISHOP RM 3                          30.340 METERS 09024     |
 HU1539| DC7837 BISHOP RM 2                          27.353 METERS 15302     |
 HU1539|---------------------------------------------------------------------|
 HU1539
 HU1539                          SUPERSEDED SURVEY CONTROL
 HU1539
 HU1539  NAD 83(1986)-  38 25 34.57479(N)    075 13 16.77539(W) AD(       ) 2
 HU1539  NAD 27      -  38 25 34.16400(N)    075 13 18.09700(W) AD(       ) 2
 HU1539
 HU1539.Superseded values are not recommended for survey control.
 HU1539
 HU1539.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1539.See file dsdata.pdf to determine how the superseded data were derived.
 HU1539
 HU1539_MARKER: DS = TRIANGULATION STATION DISK
 HU1539_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1539_STAMPING: BISHOP 1955
 HU1539_MARK LOGO: CGS
 HU1539_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1539+STABILITY: SURFACE MOTION
 HU1539
 HU1539  HISTORY     - Date     Condition        Report By
 HU1539  HISTORY     - 1955     MONUMENTED       CGS
 HU1539  HISTORY     - 1958     GOOD             CGS
 HU1539  HISTORY     - 1962     GOOD             CGS
 HU1539  HISTORY     - 1962     GOOD             CGS
 HU1539  HISTORY     - 1964     MARK NOT FOUND   MDDT
 HU1539
 HU1539                          STATION DESCRIPTION
 HU1539
 HU1539'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 HU1539'THE STATION IS LOCATED IN THE TOWN OF BISHOP, 0.15 MILE WEST OF
 HU1539'U.S. HIGHWAY 113, 0.05 MILE SOUTH OF THE BISHOP POST OFFICE, AND
 HU1539'ON LAND OWNED BY THE PENNSYLVANIA RAILROAD.  IT IS ABOUT 150 FEET
 HU1539'EAST OF A BARN, 77 FEET WEST OF THE WEST RAIL OF THE RAILROAD
 HU1539'TRACKS AND 26 FEET WEST OF THE CENTER OF AN ENTRANCE DRIVE.
 HU1539'
 HU1539'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH FOR 0.05
 HU1539'MILE TO THE POST OFFICE AND A RAILROAD CROSSING ON THE RIGHT, TURN
 HU1539'RIGHT, CROSS THE TRACKS AND GO EAST FOR 0.2 MILE TO HIGHWAY 113,
 HU1539'TURN RIGHT AND GO SOUTH 0.2 MILE TO THE MARK ON THE LEFT.
 HU1539'
 HU1539'THE STATION IS 4 INCHES BELOW THE SURFACE OF THE GROUND, AND THE
 HU1539'DISK IS STAMPED BISHOP 1955.
 HU1539'
 HU1539'REFERENCE MARK 1 IS 28 FEET WEST OF THE WEST RAIL OF THE RAILROAD
 HU1539'TRACKS AND 17 FEET EAST OF THE CENTER OF THE ENTRANCE DRIVE.  THE
 HU1539'MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED BISHOP NO
 HU1539'1 1955.
 HU1539'
 HU1539'REFERENCE MARK 2 IS 52 FEET WEST OF THE WEST RAIL OF THE RAILROAD
 HU1539'TRACKS AND 12 FEET EAST OF THE CENTER OF THE ENTRANCE DRIVE.  THE
 HU1539'MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED BISHOP NO
 HU1539'2 1955.
 HU1539'
 HU1539'THE AZIMUTH MARK IS 50 FEET EAST OF THE CENTER OF HIGHWAY 113
 HU1539'AND 3 FEET WEST OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK IS
 HU1539'FLUSH WITH THE GROUND, AND THE DISK IS STAMPED BISHOP 1955.
 HU1539'
 HU1539'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 HU1539
 HU1539                          STATION RECOVERY (1958)
 HU1539
 HU1539'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1539'STATION RECOVERED AS DESCRIBED.  ALL MARKS WERE FOUND TO BE IN
 HU1539'GOOD CONDITION.  THE AZIMUTH MARK IS ON TOP OF AN 8 FT. BANK, AND
 HU1539'4 PACES N OF THE S. EDGE OF THE BANK SET FLUSH.
 HU1539
 HU1539                          STATION RECOVERY (1962)
 HU1539
 HU1539'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (CFO)
 HU1539'THE STATION AND REFERENCE MARKS 1 AND 2 WERE RECOVERED AS DESCRIBED
 HU1539'AND FOUND TO BE IN GOOD CONDITION.
 HU1539'
 HU1539'THE AZIMUTH MARK WAS FOUND LYING AT THE FOOT OF A SAND BANK WHERE
 HU1539'THE SAND HAD BEEN HAULED AWAY.
 HU1539'
 HU1539'THE STATION IS ADEQUATELY DESCRIBED.
 HU1539
 HU1539                          STATION RECOVERY (1962)
 HU1539
 HU1539'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (JCE)
 HU1539'STATION AND REFERENCE MARK NO. 2 WERE RECOVERED AS DESCRIBED AND
 HU1539'FOUND TO BE IN GOOD CONDITION.  THE AZIMUTH MARK WAS FOUND
 HU1539'DESTROYED AT THE BOTTOM OF A PIT WHERE IT HAD FALLEN FROM A BANK
 HU1539'THAT HAD BEEN MOVED.  REFERENCE MARK NO. 1 WAS UNDER ABOUT 3 FEET
 HU1539'OF FILL AND SOME STEEL ELEVATOR SHAFTS SO WAS NOT
 HU1539'RECOVERED.  REFERENCE MARK NO. 3 WAS ESTABLISHED.  THE MARK IS
 HU1539'16.5 FEET EAST OF THE EAST RAIL OF RAILROAD TRACK AND 10 FEET
 HU1539'NORTHEAST OF A UTILITY POLE.  THE MARK IS A STANDARD DISK SET
 HU1539'FLUSH IN A 10 X 10 INCH CONCRETE MONUMENT WHICH PROJECTS
 HU1539'ABOUT 5 INCHES AND THE DISK IS STAMPED BISHOP NO 3 1955.  N
 HU1539'
 HU1539'1962 OBSERVATIONS TAKEN FROM A TRIPOD.
 HU1539
 HU1539                          STATION RECOVERY (1964)
 HU1539
 HU1539'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1964
 HU1539'STATION AND R.M. 1 NOT RECOVERED.  R.M. 2 FOUND LYING OUT ON THE
 HU1539'GROUND.  A GRAIN ELEVATOR HAS BEEN CONSTRUCTED OVER THE AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6449 ***********************************************************************
 HV6449  DESIGNATION -  BISHOP 2 1898
 HV6449  PID         -  HV6449
 HV6449  STATE/COUNTY-  MD/DORCHESTER
 HV6449  COUNTRY     -  US
 HV6449  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6449
 HV6449                         *CURRENT SURVEY CONTROL
 HV6449  ______________________________________________________________________
 HV6449* NAD 83(1993) POSITION- 38 13 25.75930(N) 076 02 59.27855(W)   ADJUSTED
 HV6449* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6449  ______________________________________________________________________
 HV6449  GEOID HEIGHT    -        -35.579 (meters)                     GEOID18
 HV6449  LAPLACE CORR    -         -1.68  (seconds)                    DEFLEC18
 HV6449  HORZ ORDER      -  THIRD
 HV6449
 HV6449.The horizontal coordinates were established by classical geodetic methods
 HV6449.and adjusted by the National Geodetic Survey in November 1994.
 HV6449
 HV6449.The orthometric height was scaled from a topographic map.
 HV6449
 HV6449.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6449.GEOID18 height accuracy estimate available here.
 HV6449
 HV6449.Click photographs - Photos may exist for this station.
 HV6449
 HV6449.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6449
 HV6449. The following values were computed from the NAD 83(1993) position.
 HV6449
 HV6449;                    North         East     Units Scale Factor Converg.
 HV6449;SPC MD       -    62,279.960   483,203.818   MT  1.00001413   +0 35 47.0
 HV6449;SPC MD       -   204,330.17  1,585,311.19   sFT  1.00001413   +0 35 47.0
 HV6449;UTM  18      - 4,231,169.913   408,110.020   MT  0.99970399   -0 38 58.5
 HV6449
 HV6449!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6449!SPC MD       -   1.00000546  x   1.00001413  =   1.00001959
 HV6449!UTM  18      -   1.00000546  x   0.99970399  =   0.99970945
 HV6449
 HV6449_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0811031169(NAD 83)
 HV6449
 HV6449                          SUPERSEDED SURVEY CONTROL
 HV6449
 HV6449  NAD 83(1991)-  38 13 25.75961(N)    076 02 59.27838(W) AD(       ) 3
 HV6449  NAD 83(1986)-  38 13 25.75941(N)    076 02 59.29729(W) AD(       ) 3
 HV6449  NAD 27      -  38 13 25.31000(N)    076 03 00.50500(W) AD(       ) 3
 HV6449  USSD        -  38 13 25.69600(N)    076 03 00.27000(W) AD(       ) 3
 HV6449
 HV6449.Superseded values are not recommended for survey control.
 HV6449
 HV6449.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6449.See file dsdata.pdf to determine how the superseded data were derived.
 HV6449
 HV6449_MARKER: N = NAIL
 HV6449_SETTING: 0 = UNSPECIFIED SETTING
 HV6449_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6449
 HV6449  HISTORY     - Date     Condition        Report By
 HV6449  HISTORY     - 1898     MONUMENTED       CGS
 HV6449  HISTORY     - 1901     SEE DESCRIPTION  CGS
 HV6449  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6449
 HV6449                          STATION DESCRIPTION
 HV6449
 HV6449'DESCRIBED BY COAST AND GEODETIC SURVEY 1901
 HV6449'STATION IS ON THE NORTHERN SHORE OF HOOPER STRAIT, ON POINT AT W
 HV6449'SIDE OF HOPKINS COVE, ABOUT 10 METERS E AND 10 METERS N OF SHORE
 HV6449'LINE.  THE STATION IS 19 METERS S OF A WIRE FENCE, 24 METERS SW
 HV6449'OF A PINE TREE, AND 20 METERS S-SW OF A PERSIMMON TREE.  IT
 HV6449'IS MARKED BY NAIL IN STUB SET INSIDE A 4-INCH TILE PIPE, THE TOP
 HV6449'OF PIPE BEING ABOUT 8 INCHES BELOW SURFACE OF GROUND.
 HV6449
 HV6449                          STATION RECOVERY (1942)
 HV6449
 HV6449'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6449'THE STATION WAS THOROUGHLY SEARCHED FOR BUT NOT FOUND.  ALL
 HV6449'REFERENCE MARKS REFERRED TO ARE GONE.  THE APPROXIMATE LOCATION
 HV6449'WAS DUG UP BUT NOTHING WAS FOUND.
 HV6449'
 HV6449'IT IS RECOMMENDED THAT THE STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1562 ***********************************************************************
 HU1562  DESIGNATION -  BISHOPVILLE
 HU1562  PID         -  HU1562
 HU1562  STATE/COUNTY-  MD/WORCESTER
 HU1562  COUNTRY     -  US
 HU1562  USGS QUAD   -  SELBYVILLE (2016)
 HU1562
 HU1562                         *CURRENT SURVEY CONTROL
 HU1562  ______________________________________________________________________
 HU1562* NAD 83(1991) POSITION- 38 27 04.27451(N) 075 10 37.43915(W)   ADJUSTED
 HU1562* NAVD 88 ORTHO HEIGHT -     5.5   (meters)       18.    (feet) VERTCON3
 HU1562  ______________________________________________________________________
 HU1562  GEOID HEIGHT    -        -35.877 (meters)                     GEOID18
 HU1562  LAPLACE CORR    -         -0.44  (seconds)                    DEFLEC18
 HU1562  HORZ ORDER      -  SECOND
 HU1562
 HU1562.The horizontal coordinates were established by classical geodetic methods
 HU1562.and adjusted by the National Geodetic Survey in January 1992.
 HU1562
 HU1562.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1562.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1562
 HU1562.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1562.GEOID18 height accuracy estimate available here.
 HU1562
 HU1562.Click photographs - Photos may exist for this station.
 HU1562
 HU1562.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1562
 HU1562. The following values were computed from the NAD 83(1991) position.
 HU1562
 HU1562;                    North         East     Units Scale Factor Converg.
 HU1562;SPC MD       -    88,673.701   559,112.586   MT  0.99997714   +1 08 38.9
 HU1562;SPC MD       -   290,923.63  1,834,355.21   sFT  0.99997714   +1 08 38.9
 HU1562;UTM  18      - 4,255,891.969   484,549.764   MT  0.99960294   -0 06 36.4
 HU1562
 HU1562!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1562!SPC MD       -   1.00000477  x   0.99997714  =   0.99998191
 HU1562!UTM  18      -   1.00000477  x   0.99960294  =   0.99960771
 HU1562
 HU1562:                Primary Azimuth Mark                     Grid Az
 HU1562:SPC MD       -  BISHOPVILLE RM 3                         270 12 25.0
 HU1562:UTM  18      -  BISHOPVILLE RM 3                         271 27 40.3
 HU1562
 HU1562_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8454955891(NAD 83)
 HU1562
 HU1562|---------------------------------------------------------------------|
 HU1562| PID    Reference Object                     Distance      Geod. Az  |
 HU1562|                                                           dddmmss.s |
 HU1562| HU1561 BOUNDARY MON EW 7 DE MD               2.118 METERS 00004     |
 HU1562| DC7839 BISHOPVILLE RM 1                     22.131 METERS 05539     |
 HU1562| HU1549 BISHOPVILLE RM 3                    APPROX. 0.8 KM 2712103.9 |
 HU1562| DC7840 BISHOPVILLE RM 2                     22.103 METERS 30302     |
 HU1562|---------------------------------------------------------------------|
 HU1562
 HU1562                          SUPERSEDED SURVEY CONTROL
 HU1562
 HU1562  NAD 83(1986)-  38 27 04.25816(N)    075 10 37.46265(W) AD(       ) 2
 HU1562  NAD 27      -  38 27 03.84782(N)    075 10 38.79216(W) AD(       ) 2
 HU1562  NGVD 29 (07/19/86)    5.7    (m)           19.     (f) VERT ANG       
 HU1562
 HU1562.Superseded values are not recommended for survey control.
 HU1562
 HU1562.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1562.See file dsdata.pdf to determine how the superseded data were derived.
 HU1562
 HU1562_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1562_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1562_STAMPING: BISHOPVILLE 1974
 HU1562_MARK LOGO: NGS
 HU1562_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1562+STABILITY: SURFACE MOTION
 HU1562_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1562+SATELLITE: SATELLITE OBSERVATIONS - June 14, 2005
 HU1562
 HU1562  HISTORY     - Date     Condition        Report By
 HU1562  HISTORY     - 1974     MONUMENTED       NGS
 HU1562  HISTORY     - 1976     GOOD             NGS
 HU1562  HISTORY     - 19910502 MARK NOT FOUND   USPSQD
 HU1562  HISTORY     - 20050614 GOOD             UE
 HU1562
 HU1562                          STATION DESCRIPTION
 HU1562
 HU1562'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1562'NO MEASUREMENTS BETWEEN THE RMS DUE TO TREES ON LINE.
 HU1562'
 HU1562'THE STATION IS LOCATED ABOUT 2.5 MILES EAST-SOUTHEAST OF
 HU1562'SELBYVILLE, 1 MILE EAST-NORTHEAST OF BISHOPVILLE, ON ROAD
 HU1562'RIGHT-OF-WAY AND NEAR THE MARYLAND-DELAWARE STATE LINE.
 HU1562'
 HU1562'TO REACH THE STATION FROM THE POST OFFICE IN BISHOPVILLE, GO
 HU1562'NORTHEAST ON BLACKTOP ROAD FOR 0.75 MILE TO STATE LINE ROAD ON
 HU1562'THE RIGHT AND REFERENCE MARK 3 ON THE LEFT.  TURN RIGHT AND GO
 HU1562'EAST ON STATE LINE ROAD FOR 0.4 MILE TO THE STATION ON THE RIGHT.
 HU1562'
 HU1562'STATION MARK, A STANDARD DISK STAMPED BISHOPVILLE 1974, IS SET
 HU1562'IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT IS
 HU1562'FLUSH WITH THE GROUND SURFACE.  IT IS 24 FEET NORTHWEST OF A
 HU1562'16-INCH OAK TREE, 18 FEET SOUTH-SOUTHWEST OF THE CENTER OF STATE
 HU1562'LINE ROAD AND 3 FEET NORTHEAST OF A POWERLINE POLE.  NO
 HU1562'UNDERGROUND DISK WAS ESTABLISHED.
 HU1562'
 HU1562'REFERENCE MARK 1, A STANDARD DISK STAMPED BISHOPVILLE NO 1 1974,
 HU1562'IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT
 HU1562'THAT PROJECTS 3 INCHES ABOVE THE GROUND SURFACE.  IT IS 4 FEET
 HU1562'SOUTHEAST OF A 10-INCH OAK TREE AND 21 FEET NORTH OF THE CENTER
 HU1562'OF THE ROAD.
 HU1562'
 HU1562'REFERENCE MARK 2, A STANDARD DISK STAMPED BISHOPVILLE NO 2 1974
 HU1562'IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT
 HU1562'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 21 FEET NORTH
 HU1562'OF THE CENTER OF THE ROAD, 12 FEET WEST-NORTHWEST OF A 12-INCH
 HU1562'OAK TREE AND 4 FEET EAST OF A METAL WITNESS POST.
 HU1562'
 HU1562'REFERENCE MARK 3, A STANDARD DISK STAMPED BISHOPVILLE NO 3 1974,
 HU1562'IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1562'IS FLUSH WITH THE GROUND SURFACE.  IT IS 49 FEET NORTHEAST OF SIGN
 HU1562'MARYLAND-DELAWARE STATE LINE, 47 FEET NORTHWEST OF THE CENTER OF
 HU1562'INTERSECTION AND 3 FEET SOUTHWEST OF A POWERLINE POLE.  THE MARK
 HU1562'SERVES AS AN AZIMUTH MARK.
 HU1562'
 HU1562'HEIGHT OF LIGHT ABOVE STATION MARK 1.24 METERS.
 HU1562
 HU1562                          STATION RECOVERY (1976)
 HU1562
 HU1562'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1562'UNABLE TO MEASURE BETWEEN RMS.
 HU1562'
 HU1562'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1562'CONDITION AS DESCRIBED IN THE 1974 DESCRIPTION.  ALL DISTANCES
 HU1562'AND DIRECTIONS CHECKED THE 1974 OBSERVATIONS.
 HU1562'
 HU1562'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 7 WAS SET AT
 HU1562'THIS DATE, SEE DESCRIPTION THEREOF.
 HU1562'
 HU1562'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1562'1 MILE EAST-SOUTHEAST OF BISHOPVILLE.
 HU1562
 HU1562                          STATION RECOVERY (1991)
 HU1562
 HU1562'RECOVERY NOTE BY US POWER SQUADRON 1991 (WMK)
 HU1562'MARK NOT FOUND.
 HU1562
 HU1562                          STATION RECOVERY (2005)
 HU1562
 HU1562'RECOVERY NOTE BY URBAN ENGINEERS INC 2005 (WBF)
 HU1562'FACE OF DISK WAS DAMAGED BY LAWN MOWERS.  POLE NO. 18 IS NOW NO.
 HU1562'58870/96212.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8004 ***********************************************************************
 AJ8004  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8004  DESIGNATION -  BITT
 AJ8004  PID         -  AJ8004
 AJ8004  STATE/COUNTY-  MD/GARRETT
 AJ8004  COUNTRY     -  US
 AJ8004  USGS QUAD   -  BITTINGER (2016)
 AJ8004
 AJ8004                         *CURRENT SURVEY CONTROL
 AJ8004  ______________________________________________________________________
 AJ8004* NAD 83(2011) POSITION- 39 36 15.85177(N) 079 13 18.40001(W)   ADJUSTED
 AJ8004* NAD 83(2011) ELLIP HT-   786.631 (meters)        (06/27/12)   ADJUSTED
 AJ8004* NAD 83(2011) EPOCH   -  2010.00
 AJ8004* NAVD 88 ORTHO HEIGHT -   818.1   (meters)     2684.    (feet) GPS OBS
 AJ8004  ______________________________________________________________________
 AJ8004  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8004  GEOID HEIGHT    -        -31.426 (meters)                     GEOID99
 AJ8004  GEOID HEIGHT    -        -31.419 (meters)                     GEOID18
 AJ8004  NAD 83(2011) X  -    920,346.621 (meters)                     COMP
 AJ8004  NAD 83(2011) Y  - -4,834,608.829 (meters)                     COMP
 AJ8004  NAD 83(2011) Z  -  4,044,742.533 (meters)                     COMP
 AJ8004  LAPLACE CORR    -         -3.83  (seconds)                    DEFLEC18
 AJ8004
 AJ8004  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8004  Standards:
 AJ8004         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8004            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8004  -------------------------------------------------------------------
 AJ8004  NETWORK    0.71   1.27           0.31   0.27   0.65      0.14630557
 AJ8004  -------------------------------------------------------------------
 AJ8004  Click here for local accuracies and other accuracy information.
 AJ8004
 AJ8004.The horizontal coordinates were established by GPS observations
 AJ8004.and adjusted by the National Geodetic Survey in June 2012.
 AJ8004
 AJ8004.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8004.been affixed to the stable North American tectonic plate. See 
 AJ8004.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8004
 AJ8004.The horizontal coordinates are valid at the epoch date displayed above
 AJ8004.which is a decimal equivalence of Year/Month/Day.
 AJ8004
 AJ8004.The orthometric height was determined by GPS observations and a
 AJ8004.high-resolution geoid model.
 AJ8004
 AJ8004.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8004.GEOID18 height accuracy estimate available here.
 AJ8004
 AJ8004.Click photographs - Photos may exist for this station.
 AJ8004
 AJ8004.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8004
 AJ8004.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8004
 AJ8004.The ellipsoidal height was determined by GPS observations
 AJ8004.and is referenced to NAD 83.
 AJ8004
 AJ8004. The following values were computed from the NAD 83(2011) position.
 AJ8004
 AJ8004;                    North         East     Units Scale Factor Converg.
 AJ8004;SPC MD       -   217,428.620   209,196.509   MT  1.00003066   -1 23 40.1
 AJ8004;SPC MD       -   713,347.06    686,338.88   sFT  1.00003066   -1 23 40.1
 AJ8004;UTM  17      - 4,385,361.849   652,665.445   MT  0.99988695   +1 08 01.7
 AJ8004
 AJ8004!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8004!SPC MD       -   0.99987660  x   1.00003066  =   0.99990726
 AJ8004!UTM  17      -   0.99987660  x   0.99988695  =   0.99976357
 AJ8004
 AJ8004_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD5266585361(NAD 83)
 AJ8004
 AJ8004                          SUPERSEDED SURVEY CONTROL
 AJ8004
 AJ8004  NAD 83(2007)-  39 36 15.85196(N)    079 13 18.40079(W) AD(2002.00) 0
 AJ8004  ELLIP H (02/10/07)  786.658  (m)                       GP(2002.00)    
 AJ8004  NAD 83(1991)-  39 36 15.85206(N)    079 13 18.40096(W) AD(       ) A
 AJ8004  ELLIP H (02/12/02)  786.659  (m)                       GP(       ) 4 1
 AJ8004
 AJ8004.Superseded values are not recommended for survey control.
 AJ8004
 AJ8004.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8004.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8004
 AJ8004_MARKER: DD = SURVEY DISK
 AJ8004_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8004_STAMPING: BITT 2000
 AJ8004_MARK LOGO: MDSHA
 AJ8004_PROJECTION: FLUSH
 AJ8004_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8004_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8004+STABILITY: SURFACE MOTION
 AJ8004_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8004+SATELLITE: SATELLITE OBSERVATIONS - April 13, 2016
 AJ8004
 AJ8004  HISTORY     - Date     Condition        Report By
 AJ8004  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ8004  HISTORY     - 20160413 GOOD             BASE9
 AJ8004
 AJ8004                          STATION DESCRIPTION
 AJ8004
 AJ8004'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8004'THE STATION IS LOCATED ABOUT 6.2 MILES (10.0 KM) SOUTH OF KEYSERS
 AJ8004'RIDGE, 10.7 MILES (17.2 KM) SOUTHEAST OF FRIENDSVILLE, AND 17.0 MILES
 AJ8004'(27.4 KM) NORTHEAST OF OAKLAND IN THE TOWN OF BITTINGER.  TO REACH THE
 AJ8004'STATION FROM THE POST OFFICE IN GRANTSVILLE, GO SOUTH ALONG STATE
 AJ8004'HIGHWAY 495 (BITTINGER ROAD) FOR 0.3 MILES (0.5 KM) TO THE
 AJ8004'INTERSECTION WITH INTERSTATE 68.  CONTINUE SOUTHWEST ALONG STATE
 AJ8004'HIGHWAY 495 FOR 7.75 MILES (12.47 KM) TO THE STATION ON THE LEFT.
 AJ8004'NOTE= THE STATION IS ALSO 0.15 MILES (0.24 KM) NORTHEAST ALONG STATE
 AJ8004'HIGHWAY 495 FROM THE CROSSROADS IN BITTINGER.  THE STATION IS A
 AJ8004'MARYLAND STATE HIGHWAY SURVEY DISK SET IN THE TOP OF A 12 INCH ROUND
 AJ8004'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT
 AJ8004'IS 27.4 FEET (8.4 M) SOUTHEAST OF THE CENTER OF THE HIGHWAY, 76.0 FEET
 AJ8004'(23.2 M) NORTHEAST OF TELEPHONE POLE NUMBER 48, 75.7 FEET (23.1 M)
 AJ8004'SOUTHWEST OF TELEPHONE POLE NUMBER 49, 2.0 FEET (0.6 M) NORTHWEST OF A
 AJ8004'CARSONITE WITNESS POST AND ABOUT 2 FEET (0.6 M) HIGHER THAN THE LEVEL
 AJ8004'OF THE ROAD.
 AJ8004
 AJ8004                          STATION RECOVERY (2016)
 AJ8004
 AJ8004'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 AJ8004'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1944 ***********************************************************************
 HU1944  DESIGNATION -  BIVALVE CHURCH SPIRE
 HU1944  PID         -  HU1944
 HU1944  STATE/COUNTY-  MD/WICOMICO
 HU1944  COUNTRY     -  US
 HU1944  USGS QUAD   -  NANTICOKE (2016)
 HU1944
 HU1944                         *CURRENT SURVEY CONTROL
 HU1944  ______________________________________________________________________
 HU1944* NAD 83(1991) POSITION- 38 18 24.10876(N) 075 53 21.42360(W)   ADJUSTED
 HU1944* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1944  ______________________________________________________________________
 HU1944  GEOID HEIGHT    -        -35.686 (meters)                     GEOID18
 HU1944  LAPLACE CORR    -         -2.65  (seconds)                    DEFLEC18
 HU1944  HORZ ORDER      -  THIRD
 HU1944
 HU1944.The horizontal coordinates were established by classical geodetic methods
 HU1944.and adjusted by the National Geodetic Survey in January 1992.
 HU1944
 HU1944.The orthometric height was scaled from a topographic map.
 HU1944
 HU1944.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1944.GEOID18 height accuracy estimate available here.
 HU1944
 HU1944.Click photographs - Photos may exist for this station.
 HU1944
 HU1944.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1944
 HU1944. The following values were computed from the NAD 83(1991) position.
 HU1944
 HU1944;                    North         East     Units Scale Factor Converg.
 HU1944;SPC MD       -    71,637.226   497,146.686   MT  0.99999884   +0 41 49.6
 HU1944;SPC MD       -   235,029.80  1,631,055.42   sFT  0.99999884   +0 41 49.6
 HU1944;UTM  18      - 4,240,218.605   422,248.768   MT  0.99967445   -0 33 04.6
 HU1944
 HU1944!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1944!SPC MD       -   1.00000564  x   0.99999884  =   1.00000448
 HU1944!UTM  18      -   1.00000564  x   0.99967445  =   0.99968009
 HU1944
 HU1944_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2224840218(NAD 83)
 HU1944
 HU1944                          SUPERSEDED SURVEY CONTROL
 HU1944
 HU1944  NAD 83(1986)-  38 18 24.10706(N)    075 53 21.44474(W) AD(       ) 3
 HU1944  NAD 27      -  38 18 23.61600(N)    075 53 22.74600(W) AD(       ) 3
 HU1944  USSD        -  38 18 24.01000(N)    075 53 22.49000(W) AD(       ) 3
 HU1944
 HU1944.Superseded values are not recommended for survey control.
 HU1944
 HU1944.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1944.See file dsdata.pdf to determine how the superseded data were derived.
 HU1944
 HU1944_MARKER: 90 = CHURCH SPIRE
 HU1944
 HU1944  HISTORY     - Date     Condition        Report By
 HU1944  HISTORY     - 1901     FIRST OBSERVED   CGS
 HU1944  HISTORY     - 1907     GOOD             CGS
 HU1944  HISTORY     - 1942     GOOD             CGS
 HU1944  HISTORY     - 1950     SEE DESCRIPTION  CGS
 HU1944
 HU1944                          STATION DESCRIPTION
 HU1944
 HU1944'DESCRIBED BY COAST AND GEODETIC SURVEY 1907
 HU1944'STATION IS ON THE EASTERN SHORE OF NANTICOKE RIVER, IN THE TOWN OF
 HU1944'BIVALVE, ABOUT 3/8 MILE BACK FROM THE SHORE, ON MAIN ROAD LEADING
 HU1944'TO STEAMER LANDING.  STATION IS CENTER OF STEEPLE ON BIVALVE
 HU1944'METHODIST CHURCH, A SHORT, SQUARE PYRAMID, WITH UNPAINTED
 HU1944'SHINGLES.
 HU1944
 HU1944                          STATION RECOVERY (1942)
 HU1944
 HU1944'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1944'THE STATION IS LOCATED AT THE VILLAGE OF BIVALVE, ABOUT 3/8 MILE
 HU1944'E ALONG THE ROAD LEADING FROM THE BOAT LANDING ON THE EASTERN
 HU1944'SHORE OF THE NANTICOKE RIVER.
 HU1944'
 HU1944'THE STATION IS THE CENTER OF THE STEEPLE ON THE BIVALVE
 HU1944'METHODIST CHURCH, WHICH IS LOCATED ON THE N SIDE OF THE ROAD.
 HU1944
 HU1944                          STATION RECOVERY (1950)
 HU1944
 HU1944'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HU1944'CHURCH SPIRE WAS IDENTIFIED DURING HYDROGRAPHIC SURVEYS OF THE
 HU1944'NANTICOKE RIVER.  THE CHURCH SPIRE WAS NOT USED AS A SIGNAL, AS
 HU1944'REPRESENTATIVES OF THE MARYLAND OYSTER COMMISSION RELATED THAT THE
 HU1944'CHURCH SPIRE HAD BEEN MOVED FROM ONE END OF THE CHURCH TO THE
 HU1944'OTHER ABOUT 10 YEARS AGO.
 HU1944'
 HU1944'THIS STATION SHOULD BE USED WITH CAUTION UNTIL THE ABOVE
 HU1944'INFORMATION IS VERIFIED OR DISPROVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4698 ***********************************************************************
 AB4698  DESIGNATION -  BIXLERS
 AB4698  PID         -  AB4698
 AB4698  STATE/COUNTY-  MD/CARROLL
 AB4698  COUNTRY     -  US
 AB4698  USGS QUAD   -  MANCHESTER (2016)
 AB4698
 AB4698                         *CURRENT SURVEY CONTROL
 AB4698  ______________________________________________________________________
 AB4698* NAD 83(2011) POSITION- 39 40 07.23084(N) 076 57 31.51158(W)   ADJUSTED
 AB4698* NAD 83(2011) ELLIP HT-   199.100 (meters)        (06/27/12)   ADJUSTED
 AB4698* NAD 83(2011) EPOCH   -  2010.00
 AB4698* NAVD 88 ORTHO HEIGHT -   231.6   (meters)      760.    (feet) GPS OBS
 AB4698  ______________________________________________________________________
 AB4698  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4698  GEOID HEIGHT    -        -32.482 (meters)                     GEOID99
 AB4698  GEOID HEIGHT    -        -32.472 (meters)                     GEOID18
 AB4698  NAD 83(2011) X  -  1,109,403.459 (meters)                     COMP
 AB4698  NAD 83(2011) Y  - -4,789,620.691 (meters)                     COMP
 AB4698  NAD 83(2011) Z  -  4,049,863.618 (meters)                     COMP
 AB4698  LAPLACE CORR    -          4.02  (seconds)                    DEFLEC18
 AB4698
 AB4698  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4698  Standards:
 AB4698         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4698            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4698  -------------------------------------------------------------------
 AB4698  NETWORK    1.30   4.70           0.54   0.51   2.40     -0.28703222
 AB4698  -------------------------------------------------------------------
 AB4698  Click here for local accuracies and other accuracy information.
 AB4698
 AB4698.The horizontal coordinates were established by GPS observations
 AB4698.and adjusted by the National Geodetic Survey in June 2012.
 AB4698
 AB4698.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4698.been affixed to the stable North American tectonic plate. See 
 AB4698.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4698
 AB4698.The horizontal coordinates are valid at the epoch date displayed above
 AB4698.which is a decimal equivalence of Year/Month/Day.
 AB4698
 AB4698.The orthometric height was determined by GPS observations and a
 AB4698.high-resolution geoid model.
 AB4698
 AB4698.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4698.GEOID18 height accuracy estimate available here.
 AB4698
 AB4698.Click photographs - Photos may exist for this station.
 AB4698
 AB4698.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4698
 AB4698.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4698
 AB4698.The ellipsoidal height was determined by GPS observations
 AB4698.and is referenced to NAD 83.
 AB4698
 AB4698. The following values were computed from the NAD 83(2011) position.
 AB4698
 AB4698;                    North         East     Units Scale Factor Converg.
 AB4698;SPC MD       -   222,243.656   403,539.347   MT  1.00004558   +0 01 33.2
 AB4698;SPC MD       -   729,144.39  1,323,945.34   sFT  1.00004558   +0 01 33.2
 AB4698;UTM  18      - 4,392,818.096   331,990.002   MT  0.99994753   -1 15 02.4
 AB4698
 AB4698!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4698!SPC MD       -   0.99996877  x   1.00004558  =   1.00001434
 AB4698!UTM  18      -   0.99996877  x   0.99994753  =   0.99991630
 AB4698
 AB4698_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3199092818(NAD 83)
 AB4698
 AB4698                          SUPERSEDED SURVEY CONTROL
 AB4698
 AB4698  NAD 83(2007)-  39 40 07.23108(N)    076 57 31.51231(W) AD(2002.00) 0
 AB4698  ELLIP H (02/10/07)  199.119  (m)                       GP(2002.00)    
 AB4698  ELLIP H (08/30/02)  199.116  (m)                       GP(       ) 4 2
 AB4698  NAD 83(1991)-  39 40 07.23063(N)    076 57 31.51283(W) AD(       ) 1
 AB4698  ELLIP H (07/03/96)  199.054  (m)                       GP(       ) 1 1
 AB4698  NAVD 88 (07/03/96)  231.6    (m)  GEOID93  model used  GPS OBS        
 AB4698
 AB4698.Superseded values are not recommended for survey control.
 AB4698
 AB4698.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4698.See file dsdata.pdf to determine how the superseded data were derived.
 AB4698
 AB4698_MARKER: DD = SURVEY DISK
 AB4698_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4698_STAMPING: BIXLERS 1995
 AB4698_MARK LOGO: MD-013
 AB4698_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4698_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4698+STABILITY: SURFACE MOTION
 AB4698_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4698+SATELLITE: SATELLITE OBSERVATIONS - March 24, 2008
 AB4698
 AB4698  HISTORY     - Date     Condition        Report By
 AB4698  HISTORY     - 1995     MONUMENTED       MD-013
 AB4698  HISTORY     - 20080324 GOOD             GPSSS
 AB4698
 AB4698                          STATION DESCRIPTION
 AB4698
 AB4698'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4698'STATION IS LOCATED ABOUT 7 MI (11.3 KM) NORTH OF WESTMINSTER AND ABOUT
 AB4698'4 MI (6.4 KM) WEST OF MANCHESTER. TO REACH STATION FROM THE
 AB4698'INTERSECTION OF MD ROUTE 97 (LITTLESTOWN PIKE) AND MD ROUTE 496
 AB4698'(BACHMAN VALLEY ROAD) GO NORTHEAST ON MD ROUTE 496 TO THE INTERSECTION
 AB4698'WITH BIXLERS CHURCH ROAD. TURN LEFT ON BIXLERS CHURCH ROAD AND GO WEST
 AB4698'FOR 0.9 MI (1.4 KM) TO THE TOP OF A HILL AND THE STATION ON THE RIGHT
 AB4698'AT THE TOP OF A BANK. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4698'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 43.2 FT
 AB4698'(13.2 M) NORTHEAST OF THE CENTERLINE OF THE ROAD, 10.54 FT (3.21 M)
 AB4698'NORTHEAST OF TELEPHONE POLE NO.22 AND 3.11 FT (0.95 M) EAST OF THE
 AB4698'TELEPHONE POLE GUY ANCHOR.
 AB4698
 AB4698                          STATION RECOVERY (2008)
 AB4698
 AB4698'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (DA)
 AB4698'RECOVERED BY DALE ADAMS OF CLSI, FREDERICK OFFICE.  SOME TREE
 AB4698'OBSTRUCTIONS MAKE LONGER GPS SESSIONS SUGGESTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6044 ***********************************************************************
 JV6044  DESIGNATION -  BLACK
 JV6044  PID         -  JV6044
 JV6044  STATE/COUNTY-  MD/BALTIMORE
 JV6044  COUNTRY     -  US
 JV6044  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6044
 JV6044                         *CURRENT SURVEY CONTROL
 JV6044  ______________________________________________________________________
 JV6044* NAD 83(1991) POSITION- 39 22 12.75716(N) 076 48 04.52811(W)   ADJUSTED
 JV6044* NAVD 88 ORTHO HEIGHT -   180.    (meters)      591.    (feet) SCALED
 JV6044  ______________________________________________________________________
 JV6044  GEOID HEIGHT    -        -32.145 (meters)                     GEOID18
 JV6044  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC18
 JV6044  HORZ ORDER      -  FIRST
 JV6044
 JV6044.The horizontal coordinates were established by classical geodetic methods
 JV6044.and adjusted by the National Geodetic Survey in January 1992.
 JV6044
 JV6044.The orthometric height was scaled from a topographic map.
 JV6044
 JV6044.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6044.GEOID18 height accuracy estimate available here.
 JV6044
 JV6044.Click photographs - Photos may exist for this station.
 JV6044
 JV6044.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6044
 JV6044. The following values were computed from the NAD 83(1991) position.
 JV6044
 JV6044;                    North         East     Units Scale Factor Converg.
 JV6044;SPC MD       -   189,123.844   417,126.009   MT  0.99998702   +0 07 29.1
 JV6044;SPC MD       -   620,483.81  1,368,520.91   sFT  0.99998702   +0 07 29.1
 JV6044;UTM  18      - 4,359,407.938   344,836.942   MT  0.99989643   -1 08 34.1
 JV6044
 JV6044!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6044!SPC MD       -   0.99997684  x   0.99998702  =   0.99996386
 JV6044!UTM  18      -   0.99997684  x   0.99989643  =   0.99987327
 JV6044
 JV6044:                Primary Azimuth Mark                     Grid Az
 JV6044:SPC MD       -  BLACK AZ MK                              046 16 34.0
 JV6044:UTM  18      -  BLACK AZ MK                              047 32 37.2
 JV6044
 JV6044_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4483659407(NAD 83)
 JV6044
 JV6044|---------------------------------------------------------------------|
 JV6044| PID    Reference Object                     Distance      Geod. Az  |
 JV6044|                                                           dddmmss.s |
 JV6044| JV6033 PLEASANT HILL METRO WATER TANK      APPROX. 6.6 KM 0081006.5 |
 JV6044| CA9974 BLACK AZ MK                                        0462403.1 |
 JV6044| JV6041 MT WILSON SANITORIUM TANK           APPROX. 3.5 KM 0652241.9 |
 JV6044| JV6037 WBAL WEST RADIO MAST                APPROX. 2.5 KM 0753530.3 |
 JV6044| JV5658 WCAO SOUTH RADIO MAST               APPROX. 7.3 KM 0761348.9 |
 JV6044| JV5636 SUDBROOK PARK WBAL N RAD TOWER      APPROX. 5.7 KM 0980940.8 |
 JV6044| JV5637 SUDBROOK PARK WBAL S RAD TOWER      APPROX. 5.8 KM 0982644.7 |
 JV6044| JV6056 HOLLOFIELD FIRE TWR NE COR FP       APPROX. 8.3 KM 1770841.1 |
 JV6044| CA9976 BLACK RM 2                           11.550 METERS 26215     |
 JV6044| JV6029 RANDALLSTOWN POLICE RADIO MAST      APPROX. 2.7 KM 3041026.9 |
 JV6044| CA9975 BLACK RM 1                           23.230 METERS 35926     |
 JV6044|---------------------------------------------------------------------|
 JV6044
 JV6044                          SUPERSEDED SURVEY CONTROL
 JV6044
 JV6044  NAD 83(1986)-  39 22 12.75471(N)    076 48 04.53581(W) AD(       ) 1
 JV6044  NAD 27      -  39 22 12.37600(N)    076 48 05.61930(W) AD(       ) 1
 JV6044
 JV6044.Superseded values are not recommended for survey control.
 JV6044
 JV6044.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6044.See file dsdata.pdf to determine how the superseded data were derived.
 JV6044
 JV6044_MARKER: DS = TRIANGULATION STATION DISK
 JV6044_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6044_STAMPING: BLACK 1957
 JV6044_MARK LOGO: CGS
 JV6044_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6044+STABILITY: SURFACE MOTION
 JV6044
 JV6044  HISTORY     - Date     Condition        Report By
 JV6044  HISTORY     - 1938     MONUMENTED       CGS
 JV6044  HISTORY     - 1943     GOOD             CGS
 JV6044  HISTORY     - 1957     GOOD             CGS
 JV6044  HISTORY     - 1958     GOOD             MDBCSM
 JV6044  HISTORY     - 19950713 MARK NOT FOUND   USPSQD
 JV6044
 JV6044                          STATION DESCRIPTION
 JV6044
 JV6044'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV6044'THE STATION IS ON PROPERTY OF MR. JOHN B. BLACK.
 JV6044'
 JV6044'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV6044'BRONZE DISKS SET IN CONCRETE.
 JV6044'
 JV6044'AZIMUTH MARK IS ON W SIDE OF MC DONOGH ROAD ABOUT 0.9 MILE
 JV6044'NNE OF LIBERTY ROAD.
 JV6044'
 JV6044'TO REACH FROM BALTIMORE, GO NW ON LIBERTY ROAD TO SCHOOLHOUSE ON
 JV6044'S SIDE OF ROAD IN RANDALLSTOWN.  CONTINUE ON LIBERTY ROAD 0.3 MILE
 JV6044'TO STATION.  MARK IS ON N SIDE OF ROAD IN A GRASS FIELD NEAR A
 JV6044'ROW OF OLD APPLE TREES.
 JV6044'
 JV6044'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6044
 JV6044                          STATION RECOVERY (1943)
 JV6044
 JV6044'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV6044'THE STATION AND REFERENCE MARKS WERE RECOVERED AND FOUND IN
 JV6044'GOOD CONDITION.  A DIFFERENCE WAS NOTED IN THE DISTANCE TO
 JV6044'REFERENCE MARK NO.2.  IT SHOULD BE 37.88 FEET INSTEAD OF
 JV6044'73.88 FEET AS LISTED IN THE ORIGINAL DESCRIPTION.  THE AZIMUTH
 JV6044'MARK WAS RECOVERED BUT APPEARS TO HAVE BEEN DISTURBED BY A
 JV6044'ROAD GRADER.  A COMPLETE DESCRIPTION FOLLOWS--
 JV6044'
 JV6044'THE STATION IS LOCATED 0.35 MILE NW OF THE
 JV6044'RANDALLSTOWN POST OFFICE ON THE NE SIDE OF STATE HIGHWAY 26
 JV6044'AND ON THE ESTATE OF THE DECEASED JOHN B. BLACK.  IT IS 51 FEET
 JV6044'NE OF THE CENTER OF HIGHWAY 26, 23 FEET NE OF THE
 JV6044'RIGHT-OF-WAY FENCE LINE AND 41 FEET SE OF A PROPERTY FENCE
 JV6044'LINE.  IT IS STAMPED BLACK 1938 AND IS FLUSH WITH THE SURFACE
 JV6044'OF THE GROUND.
 JV6044'
 JV6044'REFERENCE MARK NO.1 IS N OF THE STATION, IN
 JV6044'A FENCE LINE AND 35 FEET NE OF POWER-LINE POLE GE 96987.  IT IS
 JV6044'STAMPED BLACK NO.1 1938 AND PROJECTS 2 INCHES.
 JV6044'
 JV6044'REFERENCE MARK NO.2 IS W BY S OF THE STATION, IN
 JV6044'A GATEWAY, 28 FEET NE OF THE CENTER OF HIGHWAY 26 AND 13 FEET
 JV6044'E OF POWER-LINE POLE NO.202.  IT IS STAMPED BLACK NO.2 1938
 JV6044'AND PROJECTS 2 INCHES.
 JV6044'
 JV6044'THE AZIMUTH MARK IS ABOUT 0.9 MILE (AIR LINE) NE OF
 JV6044'THE STATION, 12 FEET W OF THE CENTER OF THE MC DONOGH ROAD.  IT
 JV6044'IS STAMPED BLACK 1938, PROJECTS 3 INCHES AND HAS BEEN BARED ON
 JV6044'THE E SIDE ABOUT 1-1/2 FEET BY A ROAD GRADER.  TO REACH FROM
 JV6044'THE RANDALLSTOWN BANK GO N ON THE MC DONOGH ROAD FOR 0.9 MILE
 JV6044'TO THE MARK ON THE LEFT.
 JV6044'
 JV6044'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT CROSS 1933.
 JV6044'
 JV6044'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT SAUTER 1938.
 JV6044'
 JV6044'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT SLACK.
 JV6044'
 JV6044'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT ELDER.
 JV6044'
 JV6044'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6044
 JV6044                          STATION RECOVERY (1957)
 JV6044
 JV6044'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6044'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE
 JV6044'FOUND TO BE IN GOOD CONDITION.  THE DISTANCE AND DIRECTIONS TO ALL
 JV6044'MARKS WERE CHECKED AND FOUND TO BE CORRECT.
 JV6044'
 JV6044'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV6044
 JV6044                          STATION RECOVERY (1958)
 JV6044
 JV6044'RECOVERY NOTE BY MD BUR SURV AND MAPS 1958
 JV6044'ALL MARKS RECOVERED AS DESCRIBED.  AZIMUTH MARK NOT VISIBLE
 JV6044'FROM THE GROUND, GARAGE IS ON LINE OF SIGHT.
 JV6044
 JV6044                          STATION RECOVERY (1995)
 JV6044
 JV6044'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6044'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6200 ***********************************************************************
 DN6200  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6200  DESIGNATION -  BLACK
 DN6200  PID         -  DN6200
 DN6200  STATE/COUNTY-  MD/CECIL
 DN6200  COUNTRY     -  US
 DN6200  USGS QUAD   -  BAY VIEW (2016)
 DN6200
 DN6200                         *CURRENT SURVEY CONTROL
 DN6200  ______________________________________________________________________
 DN6200* NAD 83(2011) POSITION- 39 38 28.70206(N) 075 56 22.36010(W)   ADJUSTED
 DN6200* NAD 83(2011) ELLIP HT-    50.318 (meters)        (06/27/12)   ADJUSTED
 DN6200* NAD 83(2011) EPOCH   -  2010.00
 DN6200* NAVD 88 ORTHO HEIGHT -    83.41  (meters)      273.7   (feet) GPS OBS
 DN6200  ______________________________________________________________________
 DN6200  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6200  GEOID HEIGHT    -        -33.066 (meters)                     GEOID03
 DN6200  GEOID HEIGHT    -        -33.088 (meters)                     GEOID18
 DN6200  NAD 83(2011) X  -  1,194,867.147 (meters)                     COMP
 DN6200  NAD 83(2011) Y  - -4,770,899.312 (meters)                     COMP
 DN6200  NAD 83(2011) Z  -  4,047,429.097 (meters)                     COMP
 DN6200  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 DN6200
 DN6200  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6200  Standards:
 DN6200         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6200            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6200  -------------------------------------------------------------------
 DN6200  NETWORK    0.41   0.82           0.19   0.14   0.42     -0.05591868
 DN6200  -------------------------------------------------------------------
 DN6200  Click here for local accuracies and other accuracy information.
 DN6200
 DN6200.The horizontal coordinates were established by GPS observations
 DN6200.and adjusted by the National Geodetic Survey in June 2012.
 DN6200
 DN6200.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6200.been affixed to the stable North American tectonic plate. See 
 DN6200.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6200
 DN6200.The horizontal coordinates are valid at the epoch date displayed above
 DN6200.which is a decimal equivalence of Year/Month/Day.
 DN6200
 DN6200.The orthometric height was determined by GPS observations and a
 DN6200.high-resolution geoid model using precise GPS observation and
 DN6200.processing techniques.
 DN6200
 DN6200.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6200.GEOID18 height accuracy estimate available here.
 DN6200
 DN6200.Click photographs - Photos may exist for this station.
 DN6200
 DN6200.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6200
 DN6200.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6200
 DN6200.The ellipsoidal height was determined by GPS observations
 DN6200.and is referenced to NAD 83.
 DN6200
 DN6200. The following values were computed from the NAD 83(2011) position.
 DN6200
 DN6200;                    North         East     Units Scale Factor Converg.
 DN6200;SPC MD       -   219,732.722   491,029.938   MT  1.00003907   +0 39 56.1
 DN6200;SPC MD       -   720,906.44  1,610,987.39   sFT  1.00003907   +0 39 56.1
 DN6200;UTM  18      - 4,388,368.662   419,382.033   MT  0.99968002   -0 35 58.0
 DN6200
 DN6200!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6200!SPC MD       -   0.99999211  x   1.00003907  =   1.00003118
 DN6200!UTM  18      -   0.99999211  x   0.99968002  =   0.99967213
 DN6200
 DN6200_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1938288368(NAD 83)
 DN6200
 DN6200                          SUPERSEDED SURVEY CONTROL
 DN6200
 DN6200  NAD 83(2007)-  39 38 28.70239(N)    075 56 22.36085(W) AD(2002.00) 1
 DN6200  ELLIP H (02/23/12)   50.346  (m)                       GP(2002.00) 4 1
 DN6200
 DN6200.Superseded values are not recommended for survey control.
 DN6200
 DN6200.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6200.See file dsdata.pdf to determine how the superseded data were derived.
 DN6200
 DN6200_MARKER: DD = SURVEY DISK
 DN6200_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6200_STAMPING: BLACK 2008
 DN6200_MARK LOGO: MD-015
 DN6200_PROJECTION: FLUSH
 DN6200_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6200_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6200+STABILITY: SURFACE MOTION
 DN6200_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6200+SATELLITE: SATELLITE OBSERVATIONS - January 22, 2013
 DN6200
 DN6200  HISTORY     - Date     Condition        Report By
 DN6200  HISTORY     - 20081204 MONUMENTED       GWS
 DN6200  HISTORY     - 20130122 GOOD             NGS
 DN6200
 DN6200                          STATION DESCRIPTION
 DN6200
 DN6200'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6200'THE STATION IS LOCATED 2.0 MI (3.2 KM) NORTH OF THE TOWN OF NORTH
 DN6200'EAST.
 DN6200'
 DN6200'TO REACH THE STATION FROM THE JUNCTION OF NORTH EAST ROAD (ROUTE 272)
 DN6200'AND JOSEPH BIGGS MEMORIAL HIGHWAY (ROUTE 274), PROCEED NORTH ON NORTH
 DN6200'EAST ROAD FOR 0.82 MI (1.3 KM) TO A SIDE ROAD ON THE RIGHT.  TURN
 DN6200'RIGHT AND GO NORTHEAST ON WARBURTON ROAD FOR 0.16 MI (0.3 KM) TO AN
 DN6200'INTERSECTION.  TURN RIGHT AND GO SOUTHEAST ON BOUCHELLE ROAD FOR 0.99
 DN6200'MI (1.6 KM) TO THE STATION ON THE LEFT JUST BEFORE CROSSING OVER JOHN
 DN6200'F KENNEDY MEMORIAL HIGHWAY (I-95).
 DN6200'
 DN6200'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6200'CONCRETE MONUMENT ON THE NORTH SIDE OF JOHN F KENNEDY MEMORIAL HIGHWAY
 DN6200'(ROUTE 95), APPROXIMATELY 135 FT (41.1 M) EAST OF BOUCHELLE ROAD,
 DN6200'112.6 FT (34.3 M) EAST OF THE EXIT 100A SIGN (ELK NECK STATE PARK) ON
 DN6200'I-95 SOUTHBOUND LANES, EAST OF BOUCHELLE ROAD AND 66.4 FT (20.2 M)
 DN6200'SOUTHEAST OF A CEDAR TREE.
 DN6200
 DN6200                          STATION RECOVERY (2013)
 DN6200
 DN6200'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2013 (DRD)
 DN6200'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5290 ***********************************************************************
 JV5290  DESIGNATION -  BLACK MARSH 2 1896
 JV5290  PID         -  JV5290
 JV5290  STATE/COUNTY-  MD/BALTIMORE
 JV5290  COUNTRY     -  US
 JV5290  USGS QUAD   -  SPARROWS POINT (2016)
 JV5290
 JV5290                         *CURRENT SURVEY CONTROL
 JV5290  ______________________________________________________________________
 JV5290* NAD 83(1991) POSITION- 39 12 20.24350(N) 076 25 28.55077(W)   ADJUSTED
 JV5290* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5290  ______________________________________________________________________
 JV5290  GEOID HEIGHT    -        -33.059 (meters)                     GEOID18
 JV5290  LAPLACE CORR    -         -1.16  (seconds)                    DEFLEC18
 JV5290  HORZ ORDER      -  THIRD
 JV5290
 JV5290.The horizontal coordinates were established by classical geodetic methods
 JV5290.and adjusted by the National Geodetic Survey in January 1992.
 JV5290
 JV5290.The orthometric height was scaled from a topographic map.
 JV5290
 JV5290.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5290.GEOID18 height accuracy estimate available here.
 JV5290
 JV5290.Click photographs - Photos may exist for this station.
 JV5290
 JV5290.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5290
 JV5290. The following values were computed from the NAD 83(1991) position.
 JV5290
 JV5290;                    North         East     Units Scale Factor Converg.
 JV5290;SPC MD       -   170,989.644   449,698.463   MT  0.99996638   +0 21 40.1
 JV5290;SPC MD       -   560,988.52  1,475,385.71   sFT  0.99996638   +0 21 40.1
 JV5290;UTM  18      - 4,340,561.920   376,996.876   MT  0.99978629   -0 54 02.2
 JV5290
 JV5290!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5290!SPC MD       -   1.00000507  x   0.99996638  =   0.99997145
 JV5290!UTM  18      -   1.00000507  x   0.99978629  =   0.99979136
 JV5290
 JV5290_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7699640561(NAD 83)
 JV5290
 JV5290                          SUPERSEDED SURVEY CONTROL
 JV5290
 JV5290  NAD 83(1986)-  39 12 20.23872(N)    076 25 28.56008(W) AD(       ) 3
 JV5290  NAD 27      -  39 12 19.85000(N)    076 25 29.72800(W) AD(       ) 3
 JV5290  USSD        -  39 12 20.21000(N)    076 25 29.55000(W) AD(       ) 3
 JV5290
 JV5290.Superseded values are not recommended for survey control.
 JV5290
 JV5290.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5290.See file dsdata.pdf to determine how the superseded data were derived.
 JV5290
 JV5290_MARKER: U = CONCRETE POST
 JV5290_SETTING: 0 = UNSPECIFIED SETTING
 JV5290_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5290
 JV5290  HISTORY     - Date     Condition        Report By
 JV5290  HISTORY     - 1896     MONUMENTED       CGS
 JV5290  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5290
 JV5290                          STATION DESCRIPTION
 JV5290
 JV5290'DESCRIBED BY COAST AND GEODETIC SURVEY 1896 (DBW)
 JV5290'ON THE MARSH POINT JUST ABOVE THE MOUTH OF SHALLOW CREEK, AND NE
 JV5290'OF LOWER NORTH POINT LIGHT.  IT IS OPPOSITE THE LINE OF WOODS
 JV5290'EXTENDING WESTWARD TOWARD MR. ROBBINS HOUSE, AND IS ABOUT 60
 JV5290'METERS FROM THEM, AND 6 METERS BACK FROM SHORE LINE.  MARKED BY A
 JV5290'CONCRETE POST 3 FEET LONG SUNK IN THE MARSH AND HAVING A
 JV5290'COPPERPLATED STEEL ROD EXTENDING ITS FULL LENGTH AND PROJECTING
 JV5290'SLIGHTLY ABOVE ITS TOP.  TOP OF POST IS ABOUT 5 INCHES ABOVE
 JV5290'SURFACE OF MARSH.
 JV5290
 JV5290                          STATION RECOVERY (1961)
 JV5290
 JV5290'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5290'STATION COULD NOT BE FOUND.  THE MARSH POINT AT THIS SPOT HAS
 JV5290'ERODED VERY MUCH IN THE PAST YEARS AND THE STATION IS PROBABLY
 JV5290'UNDERWATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4872 ***********************************************************************
 JV4872  DESIGNATION -  BLACK POINT TOWER OLD 1918
 JV4872  PID         -  JV4872
 JV4872  STATE/COUNTY-  MD/HARFORD
 JV4872  COUNTRY     -  US
 JV4872  USGS QUAD   -  SPESUTIE (2016)
 JV4872
 JV4872                         *CURRENT SURVEY CONTROL
 JV4872  ______________________________________________________________________
 JV4872* NAD 83(1991) POSITION- 39 25 56.97899(N) 076 06 19.50838(W)   ADJUSTED
 JV4872* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4872  ______________________________________________________________________
 JV4872  GEOID HEIGHT    -        -33.312 (meters)                     GEOID18
 JV4872  LAPLACE CORR    -         -1.48  (seconds)                    DEFLEC18
 JV4872  HORZ ORDER      -  THIRD
 JV4872
 JV4872.The horizontal coordinates were established by classical geodetic methods
 JV4872.and adjusted by the National Geodetic Survey in January 1992.
 JV4872
 JV4872.The orthometric height was scaled from a topographic map.
 JV4872
 JV4872.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4872.GEOID18 height accuracy estimate available here.
 JV4872
 JV4872.Click photographs - Photos may exist for this station.
 JV4872
 JV4872.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4872
 JV4872. The following values were computed from the NAD 83(1991) position.
 JV4872
 JV4872;                    North         East     Units Scale Factor Converg.
 JV4872;SPC MD       -   196,397.470   477,018.886   MT  0.99999698   +0 33 41.3
 JV4872;SPC MD       -   644,347.37  1,565,019.46   sFT  0.99999698   +0 33 41.3
 JV4872;UTM  18      - 4,365,355.669   404,864.138   MT  0.99971143   -0 42 07.8
 JV4872
 JV4872!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4872!SPC MD       -   1.00000527  x   0.99999698  =   1.00000225
 JV4872!UTM  18      -   1.00000527  x   0.99971143  =   0.99971669
 JV4872
 JV4872:                Primary Azimuth Mark                     Grid Az
 JV4872:SPC MD       -  B TOWER                                  007 17 10.7
 JV4872:UTM  18      -  B TOWER                                  008 32 59.8
 JV4872
 JV4872_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0486465355(NAD 83)
 JV4872
 JV4872|---------------------------------------------------------------------|
 JV4872| PID    Reference Object                     Distance      Geod. Az  |
 JV4872|                                                           dddmmss.s |
 JV4872| JV4873 B TOWER                             APPROX. 1.6 KM 0075052.0 |
 JV4872|---------------------------------------------------------------------|
 JV4872
 JV4872                          SUPERSEDED SURVEY CONTROL
 JV4872
 JV4872  NAD 83(1986)-  39 25 56.97194(N)    076 06 19.51447(W) AD(       ) 3
 JV4872  NAD 27      -  39 25 56.58400(N)    076 06 20.68900(W) AD(       ) 3
 JV4872  USSD        -  39 25 56.96000(N)    076 06 20.54500(W) AD(       ) 3
 JV4872
 JV4872.Superseded values are not recommended for survey control.
 JV4872
 JV4872.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4872.See file dsdata.pdf to determine how the superseded data were derived.
 JV4872
 JV4872_MARKER: DS = TRIANGULATION STATION DISK
 JV4872_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4872_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4872+STABILITY: SURFACE MOTION
 JV4872
 JV4872  HISTORY     - Date     Condition        Report By
 JV4872  HISTORY     - 1918     MONUMENTED       CGS
 JV4872  HISTORY     - 1984     MARK NOT FOUND   USPSQD
 JV4872
 JV4872                          STATION DESCRIPTION
 JV4872
 JV4872'DESCRIBED BY COAST AND GEODETIC SURVEY 1918 (EDB)
 JV4872'ON WESTERN SHORE OF CHESAPEAKE BAY, ABOUT 375 METERS S OF EXTREME
 JV4872'N END OF BLACK ISLAND POINT, 175 METERS S OF HOUSE AND 10 METERS
 JV4872'BACK FROM HIGH-WATER LINE.  MARKED BY A STANDARD DISK STATION MARK
 JV4872'IN A CONCRETE MONUMENT 14 INCHES, SQUARE AND 4 FEET
 JV4872'LONG.  FORTY-FOOT OBSERVATION TOWER ERECTED OVER STATION.
 JV4872
 JV4872                          STATION RECOVERY (1984)
 JV4872
 JV4872'RECOVERY NOTE BY US POWER SQUADRON 1984 (CET)
 JV4872'NEITHER THE MARK OR THE OBSERVATION TOWER ERECTED OVER IT EXISTS
 JV4872'TODAY.  THE TOWER WAS DEMOLISHED AND THE MARK LOST TO EROSIAN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5189 ***********************************************************************
 JV5189  DESIGNATION -  BLACKHOLE
 JV5189  PID         -  JV5189
 JV5189  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5189  COUNTRY     -  US
 JV5189  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5189
 JV5189                         *CURRENT SURVEY CONTROL
 JV5189  ______________________________________________________________________
 JV5189* NAD 83(1991) POSITION- 39 04 43.37029(N) 076 29 33.54846(W)   ADJUSTED
 JV5189* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5189  ______________________________________________________________________
 JV5189  GEOID HEIGHT    -        -33.192 (meters)                     GEOID18
 JV5189  LAPLACE CORR    -         -3.15  (seconds)                    DEFLEC18
 JV5189  HORZ ORDER      -  THIRD
 JV5189
 JV5189.The horizontal coordinates were established by classical geodetic methods
 JV5189.and adjusted by the National Geodetic Survey in January 1992.
 JV5189
 JV5189.The orthometric height was scaled from a topographic map.
 JV5189
 JV5189.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5189.GEOID18 height accuracy estimate available here.
 JV5189
 JV5189.Click photographs - Photos may exist for this station.
 JV5189
 JV5189.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5189
 JV5189. The following values were computed from the NAD 83(1991) position.
 JV5189
 JV5189;                    North         East     Units Scale Factor Converg.
 JV5189;SPC MD       -   156,866.321   443,898.812   MT  0.99995610   +0 19 06.3
 JV5189;SPC MD       -   514,652.25  1,456,358.02   sFT  0.99995610   +0 19 06.3
 JV5189;UTM  18      - 4,326,571.923   370,888.915   MT  0.99980526   -0 56 27.9
 JV5189
 JV5189!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5189!SPC MD       -   1.00000525  x   0.99995610  =   0.99996135
 JV5189!UTM  18      -   1.00000525  x   0.99980526  =   0.99981050
 JV5189
 JV5189:                Primary Azimuth Mark                     Grid Az
 JV5189:SPC MD       -  DOBBINS FLAG                             090 53 32.4
 JV5189:UTM  18      -  DOBBINS FLAG                             092 09 06.6
 JV5189
 JV5189_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7088826571(NAD 83)
 JV5189
 JV5189|---------------------------------------------------------------------|
 JV5189| PID    Reference Object                     Distance      Geod. Az  |
 JV5189|                                                           dddmmss.s |
 JV5189| JV5215 DOBBINS FLAG                        APPROX. 2.9 KM 0911238.7 |
 JV5189|---------------------------------------------------------------------|
 JV5189
 JV5189                          SUPERSEDED SURVEY CONTROL
 JV5189
 JV5189  NAD 83(1986)-  39 04 43.36636(N)    076 29 33.55897(W) AD(       ) 3
 JV5189  NAD 27      -  39 04 42.93900(N)    076 29 34.66800(W) AD(       ) 3
 JV5189  USSD        -  39 04 43.31400(N)    076 29 34.52600(W) AD(       ) 3
 JV5189
 JV5189.Superseded values are not recommended for survey control.
 JV5189
 JV5189.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5189.See file dsdata.pdf to determine how the superseded data were derived.
 JV5189
 JV5189_MARKER: Z = SEE DESCRIPTION
 JV5189_SETTING: 0 = UNSPECIFIED SETTING
 JV5189_MARK LOGO: CGS
 JV5189_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5189
 JV5189  HISTORY     - Date     Condition        Report By
 JV5189  HISTORY     - 1898     MONUMENTED       CGS
 JV5189  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5189
 JV5189                          STATION DESCRIPTION
 JV5189
 JV5189'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (JBB)
 JV5189'STATION IS ON THE N SIDE OF MAGOTHY RIVER, ON CHEST NECK AT
 JV5189'EASTERN SIDE OF ENTRANCE OF BLACKHOLE CREEK.  STATION MARKED BY A
 JV5189'SIGNAL CONSISTING OF A PIECE OF 2- BY 3-INCH TIMBER WITH CROSS
 JV5189'BOARDS AT TOP SET IN A BOX 3-1/2 FEET DEEP.  TOP OF BOX IS ABOVE
 JV5189'SURFACE OF GROUND AT HIGH-WATER MARK.  A NAIL AT CENTER OF
 JV5189'TRIANGLE CUT ON A TREE IS 21 FEET N 1/2 DEG W FROM THE STATION,
 JV5189'AND A SIMILAR MARK ON AN OAK TREE IS 127 FEET NW BY W FROM THE
 JV5189'STATION.
 JV5189
 JV5189                          STATION RECOVERY (1933)
 JV5189
 JV5189'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5189'STATION WAS LOCATED ON CHEST NECK, NOW THE PROPERTY OF W.B. ATHEY.
 JV5189'
 JV5189'NEITHER OF THE REFERENCES COULD BE FOUND.  THERE IS AN OAK TREE,
 JV5189'48 INCHES IN DIAMETER, ON THIS PROPERTY BUT NO BLAZE WAS FOUND ON
 JV5189'IT.  A CONCRETE RETAINING WALL HAS BEEN BUILT AROUND THE POINT OF
 JV5189'LAND AT THE EASTERN END OF CHEST NECK TO PROTECT IT FROM BEING
 JV5189'WASHED AWAY.  SINCE THE STATION WAS LOCATED JUST ABOVE THE
 JV5189'HIGH-WATER MARK, IT HAS EITHER BEEN WASHED AWAY OR DESTROYED
 JV5189'DURING THE CONSTRUCTION OF THE RETAINING WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8211 ***********************************************************************
 DH8211  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8211  DESIGNATION -  BLACKWATER BURN SET 7A4
 DH8211  PID         -  DH8211
 DH8211  STATE/COUNTY-  MD/DORCHESTER
 DH8211  COUNTRY     -  US
 DH8211  USGS QUAD   -  BLACKWATER RIVER (2016)
 DH8211
 DH8211                         *CURRENT SURVEY CONTROL
 DH8211  ______________________________________________________________________
 DH8211* NAD 83(2011) POSITION- 38 23 47.49725(N) 076 04 11.62843(W)   ADJUSTED
 DH8211* NAD 83(2011) ELLIP HT-   -34.988 (meters)        (06/27/12)   ADJUSTED
 DH8211* NAD 83(2011) EPOCH   -  2010.00
 DH8211* NAVD 88 ORTHO HEIGHT -     0.32  (meters)        1.0   (feet) GPS OBS
 DH8211  ______________________________________________________________________
 DH8211  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8211  GEOID HEIGHT    -        -35.275 (meters)                     GEOID03
 DH8211  GEOID HEIGHT    -        -35.309 (meters)                     GEOID18
 DH8211  NAD 83(2011) X  -  1,204,938.108 (meters)                     COMP
 DH8211  NAD 83(2011) Y  - -4,857,982.207 (meters)                     COMP
 DH8211  NAD 83(2011) Z  -  3,940,012.162 (meters)                     COMP
 DH8211  LAPLACE CORR    -         -1.93  (seconds)                    DEFLEC18
 DH8211
 DH8211  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8211  Standards:
 DH8211         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8211            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8211  -------------------------------------------------------------------
 DH8211  NETWORK    0.85   1.88           0.38   0.31   0.96      0.04599222
 DH8211  -------------------------------------------------------------------
 DH8211  Click here for local accuracies and other accuracy information.
 DH8211
 DH8211.The horizontal coordinates were established by GPS observations
 DH8211.and adjusted by the National Geodetic Survey in June 2012.
 DH8211
 DH8211.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8211.been affixed to the stable North American tectonic plate. See 
 DH8211.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8211
 DH8211.The horizontal coordinates are valid at the epoch date displayed above
 DH8211.which is a decimal equivalence of Year/Month/Day.
 DH8211
 DH8211.The orthometric height was determined by GPS observations and a
 DH8211.high-resolution geoid model using precise GPS observation and
 DH8211.processing techniques.
 DH8211
 DH8211.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8211.GEOID18 height accuracy estimate available here.
 DH8211
 DH8211.Click photographs - Photos may exist for this station.
 DH8211
 DH8211.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8211
 DH8211.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8211
 DH8211.The ellipsoidal height was determined by GPS observations
 DH8211.and is referenced to NAD 83.
 DH8211
 DH8211. The following values were computed from the NAD 83(2011) position.
 DH8211
 DH8211;                    North         East     Units Scale Factor Converg.
 DH8211;SPC MD       -    81,431.475   481,248.760   MT  0.99998461   +0 35 01.6
 DH8211;SPC MD       -   267,163.10  1,578,896.97   sFT  0.99998461   +0 35 01.6
 DH8211;UTM  18      - 4,250,353.822   406,572.709   MT  0.99970749   -0 39 52.4
 DH8211
 DH8211!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8211!SPC MD       -   1.00000549  x   0.99998461  =   0.99999010
 DH8211!UTM  18      -   1.00000549  x   0.99970749  =   0.99971298
 DH8211
 DH8211:                Primary Azimuth Mark                     Grid Az
 DH8211:SPC MD       -  BLACKWATER NO BURN SET 7D1               008 12 29.7
 DH8211:UTM  18      -  BLACKWATER NO BURN SET 7D1               009 27 23.7
 DH8211
 DH8211_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0657250353(NAD 83)
 DH8211
 DH8211|---------------------------------------------------------------------|
 DH8211| PID    Reference Object                     Distance      Geod. Az  |
 DH8211|                                                           dddmmss.s |
 DH8211| DH8212 BLACKWATER NO BURN SET 7D1          APPROX. 1.2 KM 0084731.3 |
 DH8211|---------------------------------------------------------------------|
 DH8211
 DH8211                          SUPERSEDED SURVEY CONTROL
 DH8211
 DH8211  NAD 83(2007)-  38 23 47.49744(N)    076 04 11.62926(W) AD(2002.00) B
 DH8211  ELLIP H (02/12/09)  -34.965  (m)                       GP(2002.00) 5 1
 DH8211  NAD 83(1991)-  38 23 47.49760(N)    076 04 11.62882(W) AD(       ) B
 DH8211  ELLIP H (02/28/06)  -34.959  (m)                       GP(       ) 5 1
 DH8211
 DH8211.Superseded values are not recommended for survey control.
 DH8211
 DH8211.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8211.See file dsdata.pdf to determine how the superseded data were derived.
 DH8211
 DH8211_MARKER: Z = SEE DESCRIPTION
 DH8211_SETTING: 0 = UNSPECIFIED SETTING
 DH8211_SP_SET: USGS MEASURING DEVICE
 DH8211_MARK LOGO: NONE
 DH8211_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH8211_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8211+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2005
 DH8211
 DH8211  HISTORY     - Date     Condition        Report By
 DH8211  HISTORY     - 20050920 MONUMENTED       USGS
 DH8211
 DH8211                          STATION DESCRIPTION
 DH8211
 DH8211'DESCRIBED BY US GEOLOGICAL SURVEY 2005 (GS)
 DH8211'NO DESCRIPTION PUBLISHED AS MARK IS UNAVAILABLE EXCEPT TO OFFICIAL
 DH8211'RESEARCH PERSONNEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8212 ***********************************************************************
 DH8212  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8212  DESIGNATION -  BLACKWATER NO BURN SET 7D1
 DH8212  PID         -  DH8212
 DH8212  STATE/COUNTY-  MD/DORCHESTER
 DH8212  COUNTRY     -  US
 DH8212  USGS QUAD   -  BLACKWATER RIVER (2016)
 DH8212
 DH8212                         *CURRENT SURVEY CONTROL
 DH8212  ______________________________________________________________________
 DH8212* NAD 83(2011) POSITION- 38 24 26.30175(N) 076 04 04.00096(W)   ADJUSTED
 DH8212* NAD 83(2011) ELLIP HT-   -34.992 (meters)        (06/27/12)   ADJUSTED
 DH8212* NAD 83(2011) EPOCH   -  2010.00
 DH8212* NAVD 88 ORTHO HEIGHT -     0.31  (meters)        1.0   (feet) GPS OBS
 DH8212  ______________________________________________________________________
 DH8212  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8212  GEOID HEIGHT    -        -35.261 (meters)                     GEOID03
 DH8212  GEOID HEIGHT    -        -35.296 (meters)                     GEOID18
 DH8212  NAD 83(2011) X  -  1,204,938.797 (meters)                     COMP
 DH8212  NAD 83(2011) Y  - -4,857,216.268 (meters)                     COMP
 DH8212  NAD 83(2011) Z  -  3,940,949.831 (meters)                     COMP
 DH8212  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 DH8212
 DH8212  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8212  Standards:
 DH8212         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8212            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8212  -------------------------------------------------------------------
 DH8212  NETWORK    0.85   1.90           0.38   0.31   0.97      0.04558161
 DH8212  -------------------------------------------------------------------
 DH8212  Click here for local accuracies and other accuracy information.
 DH8212
 DH8212.The horizontal coordinates were established by GPS observations
 DH8212.and adjusted by the National Geodetic Survey in June 2012.
 DH8212
 DH8212.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8212.been affixed to the stable North American tectonic plate. See 
 DH8212.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8212
 DH8212.The horizontal coordinates are valid at the epoch date displayed above
 DH8212.which is a decimal equivalence of Year/Month/Day.
 DH8212
 DH8212.The orthometric height was determined by GPS observations and a
 DH8212.high-resolution geoid model using precise GPS observation and
 DH8212.processing techniques.
 DH8212
 DH8212.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8212.GEOID18 height accuracy estimate available here.
 DH8212
 DH8212.Click photographs - Photos may exist for this station.
 DH8212
 DH8212.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8212
 DH8212.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8212
 DH8212.The ellipsoidal height was determined by GPS observations
 DH8212.and is referenced to NAD 83.
 DH8212
 DH8212. The following values were computed from the NAD 83(2011) position.
 DH8212
 DH8212;                    North         East     Units Scale Factor Converg.
 DH8212;SPC MD       -    82,629.797   481,421.617   MT  0.99998307   +0 35 06.3
 DH8212;SPC MD       -   271,094.59  1,579,464.09   sFT  0.99998307   +0 35 06.3
 DH8212;UTM  18      - 4,251,547.764   406,771.578   MT  0.99970704   -0 39 48.2
 DH8212
 DH8212!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8212!SPC MD       -   1.00000549  x   0.99998307  =   0.99998856
 DH8212!UTM  18      -   1.00000549  x   0.99970704  =   0.99971253
 DH8212
 DH8212:                Primary Azimuth Mark                     Grid Az
 DH8212:SPC MD       -  BLACKWATER BURN SET 7A4                  188 12 29.7
 DH8212:UTM  18      -  BLACKWATER BURN SET 7A4                  189 27 24.2
 DH8212
 DH8212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0677151547(NAD 83)
 DH8212
 DH8212|---------------------------------------------------------------------|
 DH8212| PID    Reference Object                     Distance      Geod. Az  |
 DH8212|                                                           dddmmss.s |
 DH8212| DH8211 BLACKWATER BURN SET 7A4             APPROX. 1.2 KM 1884736.0 |
 DH8212|---------------------------------------------------------------------|
 DH8212
 DH8212                          SUPERSEDED SURVEY CONTROL
 DH8212
 DH8212  NAD 83(2007)-  38 24 26.30194(N)    076 04 04.00179(W) AD(2002.00) B
 DH8212  ELLIP H (02/12/09)  -34.966  (m)                       GP(2002.00) 5 1
 DH8212  NAD 83(1991)-  38 24 26.30215(N)    076 04 04.00138(W) AD(       ) B
 DH8212  ELLIP H (02/28/06)  -34.956  (m)                       GP(       ) 5 1
 DH8212
 DH8212.Superseded values are not recommended for survey control.
 DH8212
 DH8212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8212.See file dsdata.pdf to determine how the superseded data were derived.
 DH8212
 DH8212_MARKER: Z = SEE DESCRIPTION
 DH8212_SETTING: 0 = UNSPECIFIED SETTING
 DH8212_SP_SET: USGS MEASURING DEVICE
 DH8212_MARK LOGO: NONE
 DH8212_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH8212_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8212+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2005
 DH8212
 DH8212  HISTORY     - Date     Condition        Report By
 DH8212  HISTORY     - 20050920 MONUMENTED       USGS
 DH8212
 DH8212                          STATION DESCRIPTION
 DH8212
 DH8212'DESCRIBED BY US GEOLOGICAL SURVEY 2005 (GS)
 DH8212'NO DESCRIPTION PUBLISHED AS MARK IS UNAVAILABLE EXCEPT TO OFFICIAL
 DH8212'RESEARCH PERSONNEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7741 ***********************************************************************
 HV7741  DESIGNATION -  BLADENSBURG CENTRAL BAP CH
 HV7741  PID         -  HV7741
 HV7741  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7741  COUNTRY     -  US
 HV7741  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7741
 HV7741                         *CURRENT SURVEY CONTROL
 HV7741  ______________________________________________________________________
 HV7741* NAD 83(1993) POSITION- 38 56 20.39654(N) 076 55 31.91051(W)   ADJUSTED
 HV7741  ______________________________________________________________________
 HV7741  GEOID HEIGHT    -        -32.222 (meters)                     GEOID18
 HV7741  LAPLACE CORR    -         -4.71  (seconds)                    DEFLEC18
 HV7741  HORZ ORDER      -  THIRD
 HV7741
 HV7741.The horizontal coordinates were established by classical geodetic methods
 HV7741.and adjusted by the National Geodetic Survey in November 1994.
 HV7741
 HV7741.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7741.GEOID18 height accuracy estimate available here.
 HV7741
 HV7741.Click photographs - Photos may exist for this station.
 HV7741
 HV7741.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7741
 HV7741. The following values were computed from the NAD 83(1993) position.
 HV7741
 HV7741;                    North         East     Units Scale Factor Converg.
 HV7741;SPC MD       -   141,237.156   406,456.223   MT  0.99995045   +0 02 48.3
 HV7741;SPC MD       -   463,375.57  1,333,515.12   sFT  0.99995045   +0 02 48.3
 HV7741;UTM  18      - 4,311,770.088   333,115.178   MT  0.99994295   -1 12 37.7
 HV7741
 HV7741_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3311511770(NAD 83)
 HV7741
 HV7741                          SUPERSEDED SURVEY CONTROL
 HV7741
 HV7741  NAD 83(1991)-  38 56 20.39771(N)    076 55 31.91107(W) AD(       ) 3
 HV7741  NAD 83(1986)-  38 56 20.39630(N)    076 55 31.92237(W) AD(       ) 3
 HV7741  NAD 27      -  38 56 20.00259(N)    076 55 33.01624(W) AD(       ) 3
 HV7741
 HV7741.Superseded values are not recommended for survey control.
 HV7741
 HV7741.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7741.See file dsdata.pdf to determine how the superseded data were derived.
 HV7741
 HV7741_MARKER: 90 = CHURCH SPIRE
 HV7741
 HV7741  HISTORY     - Date     Condition        Report By
 HV7741  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7741
 HV7741                          STATION DESCRIPTION
 HV7741
 HV7741'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7741'THE STATION IS THE CENTER OF THE TOP OF THE BLADENSBURG CENTRAL
 HV7741'BAPTIST CHURCH SPIRE, LOCATED AT THE INTERSECTION OF THE STATE
 HV7741'HIGHWAYS 202 AND 450.  IT IS ABOUT 75 FEET ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3140 ***********************************************************************
 DI3140  DESIGNATION -  BLADES 1
 DI3140  PID         -  DI3140
 DI3140  STATE/COUNTY-  MD/TALBOT
 DI3140  COUNTRY     -  US
 DI3140  USGS QUAD   -  RIDGELY (2017)
 DI3140
 DI3140                         *CURRENT SURVEY CONTROL
 DI3140  ______________________________________________________________________
 DI3140* NAD 83(2011) POSITION- 38 54 21.69639(N) 075 57 59.46397(W)   ADJUSTED
 DI3140* NAD 83(2011) ELLIP HT-   -16.519 (meters)        (06/27/12)   ADJUSTED
 DI3140* NAD 83(2011) EPOCH   -  2010.00
 DI3140* NAVD 88 ORTHO HEIGHT -    18.0   (meters)       59.    (feet) GPS OBS
 DI3140  ______________________________________________________________________
 DI3140  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3140  GEOID HEIGHT    -        -34.516 (meters)                     GEOID03
 DI3140  GEOID HEIGHT    -        -34.541 (meters)                     GEOID18
 DI3140  NAD 83(2011) X  -  1,205,138.930 (meters)                     COMP
 DI3140  NAD 83(2011) Y  - -4,821,543.251 (meters)                     COMP
 DI3140  NAD 83(2011) Z  -  3,984,193.771 (meters)                     COMP
 DI3140  LAPLACE CORR    -         -3.62  (seconds)                    DEFLEC18
 DI3140
 DI3140  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3140  Standards:
 DI3140         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3140            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3140  -------------------------------------------------------------------
 DI3140  NETWORK    0.47   0.65           0.21   0.17   0.33      0.06636680
 DI3140  -------------------------------------------------------------------
 DI3140  Click here for local accuracies and other accuracy information.
 DI3140
 DI3140.The horizontal coordinates were established by GPS observations
 DI3140.and adjusted by the National Geodetic Survey in June 2012.
 DI3140
 DI3140.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3140.been affixed to the stable North American tectonic plate. See 
 DI3140.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3140
 DI3140.The horizontal coordinates are valid at the epoch date displayed above
 DI3140.which is a decimal equivalence of Year/Month/Day.
 DI3140
 DI3140.The orthometric height was determined by GPS observations and a
 DI3140.high-resolution geoid model.
 DI3140
 DI3140.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3140.GEOID18 height accuracy estimate available here.
 DI3140
 DI3140.Click photographs - Photos may exist for this station.
 DI3140
 DI3140.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3140
 DI3140.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3140
 DI3140.The ellipsoidal height was determined by GPS observations
 DI3140.and is referenced to NAD 83.
 DI3140
 DI3140. The following values were computed from the NAD 83(2011) position.
 DI3140
 DI3140;                    North         East     Units Scale Factor Converg.
 DI3140;SPC MD       -   138,081.730   489,638.754   MT  0.99994999   +0 38 55.1
 DI3140;SPC MD       -   453,023.14  1,606,423.15   sFT  0.99994999   +0 38 55.1
 DI3140;UTM  18      - 4,306,792.309   416,196.090   MT  0.99968648   -0 36 25.4
 DI3140
 DI3140!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3140!SPC MD       -   1.00000259  x   0.99994999  =   0.99995258
 DI3140!UTM  18      -   1.00000259  x   0.99968648  =   0.99968907
 DI3140
 DI3140:                Primary Azimuth Mark                     Grid Az
 DI3140:SPC MD       -  BLADES 2                                 220 08 12.0
 DI3140:UTM  18      -  BLADES 2                                 221 23 32.5
 DI3140
 DI3140_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1619606792(NAD 83)
 DI3140
 DI3140|---------------------------------------------------------------------|
 DI3140| PID    Reference Object                     Distance      Geod. Az  |
 DI3140|                                                           dddmmss.s |
 DI3140| DI3141 BLADES 2                            407.665 METERS 2204707.1 |
 DI3140|---------------------------------------------------------------------|
 DI3140
 DI3140                          SUPERSEDED SURVEY CONTROL
 DI3140
 DI3140  NAD 83(1991)-  38 54 21.69640(N)    075 57 59.46488(W) AD(       ) 1
 DI3140  ELLIP H (01/05/07)  -16.456  (m)                       GP(       ) 4 2
 DI3140
 DI3140.Superseded values are not recommended for survey control.
 DI3140
 DI3140.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3140.See file dsdata.pdf to determine how the superseded data were derived.
 DI3140
 DI3140_MARKER: DD = SURVEY DISK
 DI3140_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3140_STAMPING: BLADES 1
 DI3140_PROJECTION: FLUSH
 DI3140_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3140_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3140+STABILITY: SURFACE MOTION
 DI3140_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3140+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3140
 DI3140  HISTORY     - Date     Condition        Report By
 DI3140  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3140
 DI3140                          STATION DESCRIPTION
 DI3140
 DI3140'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3140'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR QUEEN ANNE,
 DI3140'MARYLAND.  IT IS  ABOUT 10.5 MI (16.9 KM) NORTHEAST OF EASTON,
 DI3140'MARYLAND, ABOUT 7.5 MI (12.1 KM) NORTHWEST OF  DENTON, MARYLAND AND
 DI3140'ABOUT 6.4 MI (10.3 KM) SOUTHEAST OF WYE MILLS, MARYLAND.
 DI3140'
 DI3140'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 404 (QUEEN
 DI3140'ANNE HIGHWAY)  PROCEED SOUTHEAST ON SR 404 FOR 5.9 MI (9.5 KM) TO
 DI3140'INTERSECTION WITH SR 309 (CORDOVA  ROAD).    TURN RIGHT AND PROCEED
 DI3140'1.4 MI (2.2 KM) SOUTHWEST TO THE STATION ON THE LEFT.
 DI3140'STATION IS 4.5 FT (1.4 M) SOUTHEAST OF THE SOUTHEAST EDGE OF CORDOVA
 DI3140'ROAD, 47.4 FT (14.4 M)  NORTH OF HIGH TENSION ELECTRIC POLE AND 147.2
 DI3140'FT (44.9 M) NORTHEAST OF STOP SIGN FOR  CORDOVA ROAD AT BLADES ROAD.
 DI3140'A 3 IN BRASS DISK STAMPED BLADES 1 SET IN THE TOP OF A 1 FT  (0.3 M)
 DI3140'CONCRETE MONUMENT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3141 ***********************************************************************
 DI3141  DESIGNATION -  BLADES 2
 DI3141  PID         -  DI3141
 DI3141  STATE/COUNTY-  MD/TALBOT
 DI3141  COUNTRY     -  US
 DI3141  USGS QUAD   -  RIDGELY (2017)
 DI3141
 DI3141                         *CURRENT SURVEY CONTROL
 DI3141  ______________________________________________________________________
 DI3141* NAD 83(2011) POSITION- 38 54 11.68660(N) 075 58 10.51567(W)   ADJUSTED
 DI3141* NAD 83(2011) ELLIP HT-   -15.194 (meters)        (06/27/12)   ADJUSTED
 DI3141* NAD 83(2011) EPOCH   -  2010.00
 DI3141* NAVD 88 ORTHO HEIGHT -    19.4   (meters)       64.    (feet) GPS OBS
 DI3141  ______________________________________________________________________
 DI3141  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3141  GEOID HEIGHT    -        -34.518 (meters)                     GEOID03
 DI3141  GEOID HEIGHT    -        -34.543 (meters)                     GEOID18
 DI3141  NAD 83(2011) X  -  1,204,927.837 (meters)                     COMP
 DI3141  NAD 83(2011) Y  - -4,821,796.887 (meters)                     COMP
 DI3141  NAD 83(2011) Z  -  3,983,954.397 (meters)                     COMP
 DI3141  LAPLACE CORR    -         -3.61  (seconds)                    DEFLEC18
 DI3141
 DI3141  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3141  Standards:
 DI3141         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3141            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3141  -------------------------------------------------------------------
 DI3141  NETWORK    0.47   0.65           0.21   0.17   0.33      0.06916137
 DI3141  -------------------------------------------------------------------
 DI3141  Click here for local accuracies and other accuracy information.
 DI3141
 DI3141.The horizontal coordinates were established by GPS observations
 DI3141.and adjusted by the National Geodetic Survey in June 2012.
 DI3141
 DI3141.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3141.been affixed to the stable North American tectonic plate. See 
 DI3141.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3141
 DI3141.The horizontal coordinates are valid at the epoch date displayed above
 DI3141.which is a decimal equivalence of Year/Month/Day.
 DI3141
 DI3141.The orthometric height was determined by GPS observations and a
 DI3141.high-resolution geoid model.
 DI3141
 DI3141.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3141.GEOID18 height accuracy estimate available here.
 DI3141
 DI3141.Click photographs - Photos may exist for this station.
 DI3141
 DI3141.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3141
 DI3141.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3141
 DI3141.The ellipsoidal height was determined by GPS observations
 DI3141.and is referenced to NAD 83.
 DI3141
 DI3141. The following values were computed from the NAD 83(2011) position.
 DI3141
 DI3141;                    North         East     Units Scale Factor Converg.
 DI3141;SPC MD       -   137,770.082   489,375.981   MT  0.99994996   +0 38 48.2
 DI3141;SPC MD       -   452,000.68  1,605,561.03   sFT  0.99994996   +0 38 48.2
 DI3141;UTM  18      - 4,306,486.574   415,926.621   MT  0.99968704   -0 36 32.2
 DI3141
 DI3141!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3141!SPC MD       -   1.00000238  x   0.99994996  =   0.99995234
 DI3141!UTM  18      -   1.00000238  x   0.99968704  =   0.99968942
 DI3141
 DI3141:                Primary Azimuth Mark                     Grid Az
 DI3141:SPC MD       -  BLADES 1                                 040 08 12.0
 DI3141:UTM  18      -  BLADES 1                                 041 23 32.4
 DI3141
 DI3141_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1592606486(NAD 83)
 DI3141
 DI3141|---------------------------------------------------------------------|
 DI3141| PID    Reference Object                     Distance      Geod. Az  |
 DI3141|                                                           dddmmss.s |
 DI3141| DI3140 BLADES 1                            407.665 METERS 0404700.2 |
 DI3141|---------------------------------------------------------------------|
 DI3141
 DI3141                          SUPERSEDED SURVEY CONTROL
 DI3141
 DI3141  NAD 83(1991)-  38 54 11.68661(N)    075 58 10.51659(W) AD(       ) 1
 DI3141  ELLIP H (01/05/07)  -15.130  (m)                       GP(       ) 4 2
 DI3141
 DI3141.Superseded values are not recommended for survey control.
 DI3141
 DI3141.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3141.See file dsdata.pdf to determine how the superseded data were derived.
 DI3141
 DI3141_MARKER: DD = SURVEY DISK
 DI3141_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3141_STAMPING: BLADES 2
 DI3141_MARK LOGO: MD-041
 DI3141_PROJECTION: FLUSH
 DI3141_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3141_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3141+STABILITY: SURFACE MOTION
 DI3141_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3141+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2016
 DI3141
 DI3141  HISTORY     - Date     Condition        Report By
 DI3141  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3141  HISTORY     - 20160728 GOOD             USPSQD
 DI3141
 DI3141                          STATION DESCRIPTION
 DI3141
 DI3141'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3141'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR QUEEN ANNE,
 DI3141'MARYLAND.  IT IS  ABOUT 10.1 MI (16.2 KM) NORTHEAST OF EASTON,
 DI3141'MARYLAND, ABOUT 7.5 MI (12.1 KM) NORTHWEST OF  DENTON, MARYLAND AND
 DI3141'ABOUT 6.3 MI (10.1 KM) SOUTHEAST OF WYE MILLS, MARYLAND.
 DI3141'
 DI3141'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 404 (QUEEN
 DI3141'ANNE HIGHWAY)  PROCEED SOUTHEAST ON SR 404 FOR 5.9 MI (9.5 KM) TO
 DI3141'INTERSECTION WITH SR 309 (CORDOVA  ROAD). TURN RIGHT AND PROCEED 1.7
 DI3141'MI (2.7 KM) SOUTHWEST TO THE STATION ON THE RIGHT.
 DI3141'STATION IS 4.0 FT (1.2 M) WEST OF THE WEST EDGE OF CORDOVA ROAD AND
 DI3141'18.0 FT (5.5 M) EAST OF  THE EAST EDGE OF CULTIVATED FIELD.  A 3 IN
 DI3141'BRASS DISK STAMPED BLADES 2 SET IN THE TOP OF A 1  FT (0.3 M) CONCRETE
 DI3141'MONUMENT FLUSH WITH THE GROUND.
 DI3141
 DI3141                          STATION RECOVERY (2016)
 DI3141
 DI3141'RECOVERY NOTE BY US POWER SQUADRON 2016 (JTH)
 DI3141'IT IS 2 FT (0.6 M) LOWER THAN THE HIGHWAY, 58 FT (17.7 M) FROM EDGE OF
 DI3141'ROAD PAVING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4736 ***********************************************************************
 AB4736  DESIGNATION -  BLAIR
 AB4736  PID         -  AB4736
 AB4736  STATE/COUNTY-  MD/CARROLL
 AB4736  COUNTRY     -  US
 AB4736  USGS QUAD   -  TANEYTOWN (2016)
 AB4736
 AB4736                         *CURRENT SURVEY CONTROL
 AB4736  ______________________________________________________________________
 AB4736* NAD 83(2011) POSITION- 39 42 08.53085(N) 077 07 40.68690(W)   ADJUSTED
 AB4736* NAD 83(2011) ELLIP HT-   120.783 (meters)        (06/27/12)   ADJUSTED
 AB4736* NAD 83(2011) EPOCH   -  2010.00
 AB4736* NAVD 88 ORTHO HEIGHT -   153.8   (meters)      505.    (feet) GPS OBS
 AB4736  ______________________________________________________________________
 AB4736  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4736  GEOID HEIGHT    -        -33.003 (meters)                     GEOID99
 AB4736  GEOID HEIGHT    -        -33.013 (meters)                     GEOID18
 AB4736  NAD 83(2011) X  -  1,094,707.509 (meters)                     COMP
 AB4736  NAD 83(2011) Y  - -4,790,488.559 (meters)                     COMP
 AB4736  NAD 83(2011) Z  -  4,052,692.643 (meters)                     COMP
 AB4736  LAPLACE CORR    -          4.75  (seconds)                    DEFLEC18
 AB4736
 AB4736  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4736  Standards:
 AB4736         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4736            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4736  -------------------------------------------------------------------
 AB4736  NETWORK    0.97   2.90           0.45   0.32   1.48     -0.02705673
 AB4736  -------------------------------------------------------------------
 AB4736  Click here for local accuracies and other accuracy information.
 AB4736
 AB4736.The horizontal coordinates were established by GPS observations
 AB4736.and adjusted by the National Geodetic Survey in June 2012.
 AB4736
 AB4736.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4736.been affixed to the stable North American tectonic plate. See 
 AB4736.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4736
 AB4736.The horizontal coordinates are valid at the epoch date displayed above
 AB4736.which is a decimal equivalence of Year/Month/Day.
 AB4736
 AB4736.The orthometric height was determined by GPS observations and a
 AB4736.high-resolution geoid model.
 AB4736
 AB4736.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4736.GEOID18 height accuracy estimate available here.
 AB4736
 AB4736.Click photographs - Photos may exist for this station.
 AB4736
 AB4736.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4736
 AB4736.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4736
 AB4736.The ellipsoidal height was determined by GPS observations
 AB4736.and is referenced to NAD 83.
 AB4736
 AB4736. The following values were computed from the NAD 83(2011) position.
 AB4736
 AB4736;                    North         East     Units Scale Factor Converg.
 AB4736;SPC MD       -   225,991.782   389,024.385   MT  1.00005390   -0 04 49.1
 AB4736;SPC MD       -   741,441.37  1,276,324.17   sFT  1.00005390   -0 04 49.1
 AB4736;UTM  18      - 4,396,888.723   317,563.275   MT  1.00000978   -1 21 35.0
 AB4736
 AB4736!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4736!SPC MD       -   0.99998105  x   1.00005390  =   1.00003495
 AB4736!UTM  18      -   0.99998105  x   1.00000978  =   0.99999083
 AB4736
 AB4736_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1756396888(NAD 83)
 AB4736
 AB4736                          SUPERSEDED SURVEY CONTROL
 AB4736
 AB4736  NAD 83(2007)-  39 42 08.53122(N)    077 07 40.68758(W) AD(2002.00) 0
 AB4736  ELLIP H (02/10/07)  120.808  (m)                       GP(2002.00)    
 AB4736  ELLIP H (08/30/02)  120.764  (m)                       GP(       ) 4 2
 AB4736  NAD 83(1991)-  39 42 08.53027(N)    077 07 40.68822(W) AD(       ) 1
 AB4736  ELLIP H (07/03/96)  120.726  (m)                       GP(       ) 1 1
 AB4736  NAVD 88 (07/03/96)  153.8    (m)  GEOID93  model used  GPS OBS        
 AB4736
 AB4736.Superseded values are not recommended for survey control.
 AB4736
 AB4736.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4736.See file dsdata.pdf to determine how the superseded data were derived.
 AB4736
 AB4736_MARKER: DD = SURVEY DISK
 AB4736_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4736_STAMPING: BLAIR 1995
 AB4736_MARK LOGO: MD-013
 AB4736_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4736_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4736+STABILITY: SURFACE MOTION
 AB4736_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4736+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2007
 AB4736
 AB4736  HISTORY     - Date     Condition        Report By
 AB4736  HISTORY     - 1995     MONUMENTED       MD-013
 AB4736  HISTORY     - 20070529 GOOD             GEOCAC
 AB4736
 AB4736                          STATION DESCRIPTION
 AB4736
 AB4736'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4736'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) NORTHEAST OF TANEYTOWN AND
 AB4736'ABOUT 1.25 MI (2.01 KM) SOUTH OF THE MARYLAND/PENNSYLVANIA STATE LINE.
 AB4736'TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN
 AB4736'PIKE) AND MD ROUTE 194 (FRANCIS SCOTT KEY HIGHWAY) IN TANEYTOWN, GO
 AB4736'NORTH ON MD ROUTE 194 FOR 4.0 MI (6.4 KM) TO THE INTERSECTION WITH
 AB4736'STONE ROAD AND THE STATION ON THE RIGHT. STATION MARK IS SET IN THE
 AB4736'TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 AB4736'IT IS 15.0 FT (4.6 M) NORTHEAST OF THE CENTERLINE OF STONE ROAD, 58.0
 AB4736'FT (17.7 M) NORTHEAST OF POWER POLE NO. F-44283 AND 165 FT (50.3 M)
 AB4736'SOUTHEAST OF THE CENTERLINE OF MD ROUTE 194.
 AB4736
 AB4736                          STATION RECOVERY (2007)
 AB4736
 AB4736'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 AB4736'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4073 ***********************************************************************
 HV4073  DESIGNATION -  BLAIR WSSD 1933
 HV4073  PID         -  HV4073
 HV4073  STATE/COUNTY-  MD/MONTGOMERY
 HV4073  COUNTRY     -  US
 HV4073  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4073
 HV4073                         *CURRENT SURVEY CONTROL
 HV4073  ______________________________________________________________________
 HV4073* NAD 83(1993) POSITION- 38 59 29.54937(N) 077 01 56.43968(W)   ADJUSTED
 HV4073* NAVD 88 ORTHO HEIGHT -    94.    (meters)      308.    (feet) SCALED
 HV4073  ______________________________________________________________________
 HV4073  GEOID HEIGHT    -        -31.966 (meters)                     GEOID18
 HV4073  LAPLACE CORR    -         -2.66  (seconds)                    DEFLEC18
 HV4073  HORZ ORDER      -  THIRD
 HV4073
 HV4073.The horizontal coordinates were established by classical geodetic methods
 HV4073.and adjusted by the National Geodetic Survey in November 1994.
 HV4073
 HV4073.The orthometric height was scaled from a topographic map.
 HV4073
 HV4073.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4073.GEOID18 height accuracy estimate available here.
 HV4073
 HV4073.Click photographs - Photos may exist for this station.
 HV4073
 HV4073.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4073
 HV4073. The following values were computed from the NAD 83(1993) position.
 HV4073
 HV4073;                    North         East     Units Scale Factor Converg.
 HV4073;SPC MD       -   147,067.725   397,197.926   MT  0.99995188   -0 01 13.1
 HV4073;SPC MD       -   482,504.69  1,303,140.20   sFT  0.99995188   -0 01 13.1
 HV4073;SPC VA N     - 2,148,078.574 3,627,143.591   MT  0.99996965   +0 54 57.6
 HV4073;SPC VA N     - 7,047,487.79 11,900,053.60   sFT  0.99996965   +0 54 57.6
 HV4073;UTM  18      - 4,317,802.576   323,987.018   MT  0.99998149   -1 16 44.7
 HV4073
 HV4073!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4073!SPC MD       -   0.99999030  x   0.99995188  =   0.99994218
 HV4073!SPC VA N     -   0.99999030  x   0.99996965  =   0.99995995
 HV4073!UTM  18      -   0.99999030  x   0.99998149  =   0.99997179
 HV4073
 HV4073:                Primary Azimuth Mark                     Grid Az
 HV4073:SPC MD       -  WASHINGTON MONUMENT                      181 17 25.8
 HV4073:SPC VA N     -  WASHINGTON MONUMENT                      180 21 15.1
 HV4073:UTM  18      -  WASHINGTON MONUMENT                      182 32 57.4
 HV4073
 HV4073_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2398717802(NAD 83)
 HV4073
 HV4073|---------------------------------------------------------------------|
 HV4073| PID    Reference Object                     Distance      Geod. Az  |
 HV4073|                                                           dddmmss.s |
 HV4073| HV4442 WASHINGTON MONUMENT                 APPROX.11.3 KM 1811612.7 |
 HV4073| HV4369 STANDPIPE NEAR STA DULCE            APPROX. 6.8 KM 2652150.6 |
 HV4073|---------------------------------------------------------------------|
 HV4073
 HV4073                          SUPERSEDED SURVEY CONTROL
 HV4073
 HV4073  NAD 83(1991)-  38 59 29.54878(N)    077 01 56.44039(W) AD(       ) 3
 HV4073  NAD 83(1986)-  38 59 29.54787(N)    077 01 56.45041(W) AD(       ) 3
 HV4073  NAD 27      -  38 59 29.15500(N)    077 01 57.52700(W) AD(       ) 3
 HV4073
 HV4073.Superseded values are not recommended for survey control.
 HV4073
 HV4073.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4073.See file dsdata.pdf to determine how the superseded data were derived.
 HV4073
 HV4073_MARKER: X = CHISELED CROSS
 HV4073_SETTING: 0 = UNSPECIFIED SETTING
 HV4073_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4073
 HV4073  HISTORY     - Date     Condition        Report By
 HV4073  HISTORY     - 1955     MONUMENTED       WSSC
 HV4073  HISTORY     - 20060610 MARK NOT FOUND   GEOCAC
 HV4073
 HV4073                          STATION DESCRIPTION
 HV4073
 HV4073'DESCRIBED BY WASH SUBURB SAN COMM 1955 (JHP)
 HV4073'ON MOST W CHIMNEY ON MONTGOMERY BLAIRS HOUSE.  HOUSE IS
 HV4073'APPROXIMATELY 1/4 MI. W OF SILVER SPRING RAILROAD STATION, 500
 HV4073'FT. NE OF EASTERN AVENUE, 1/4 MI. E OF SIXTEENTH, D.C.  STATION
 HV4073'IS MARKED BY AN X CUT IN THE NE CORNER OF THE CHIMNEY.
 HV4073
 HV4073                          STATION RECOVERY (2006)
 HV4073
 HV4073'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 HV4073'BLAIR MANSION, 'KENTLAND,' WAS REPORTEDLY BURNED AND DEMOLISHED IN
 HV4073'1958.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6201 ***********************************************************************
 DN6201  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6201  DESIGNATION -  BLAKE
 DN6201  PID         -  DN6201
 DN6201  STATE/COUNTY-  MD/CECIL
 DN6201  COUNTRY     -  US
 DN6201  USGS QUAD   -  BAY VIEW (2016)
 DN6201
 DN6201                         *CURRENT SURVEY CONTROL
 DN6201  ______________________________________________________________________
 DN6201* NAD 83(2011) POSITION- 39 43 03.18521(N) 075 54 51.03080(W)   ADJUSTED
 DN6201* NAD 83(2011) ELLIP HT-    96.961 (meters)        (06/27/12)   ADJUSTED
 DN6201* NAD 83(2011) EPOCH   -  2010.00
 DN6201* NAVD 88 ORTHO HEIGHT -   129.98  (meters)      426.4   (feet) GPS OBS
 DN6201  ______________________________________________________________________
 DN6201  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6201  GEOID HEIGHT    -        -32.999 (meters)                     GEOID03
 DN6201  GEOID HEIGHT    -        -33.017 (meters)                     GEOID18
 DN6201  NAD 83(2011) X  -  1,195,672.732 (meters)                     COMP
 DN6201  NAD 83(2011) Y  - -4,765,161.974 (meters)                     COMP
 DN6201  NAD 83(2011) Z  -  4,053,974.171 (meters)                     COMP
 DN6201  LAPLACE CORR    -         -0.16  (seconds)                    DEFLEC18
 DN6201
 DN6201  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6201  Standards:
 DN6201         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6201            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6201  -------------------------------------------------------------------
 DN6201  NETWORK    0.54   1.08           0.25   0.18   0.55      0.05132491
 DN6201  -------------------------------------------------------------------
 DN6201  Click here for local accuracies and other accuracy information.
 DN6201
 DN6201.The horizontal coordinates were established by GPS observations
 DN6201.and adjusted by the National Geodetic Survey in June 2012.
 DN6201
 DN6201.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6201.been affixed to the stable North American tectonic plate. See 
 DN6201.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6201
 DN6201.The horizontal coordinates are valid at the epoch date displayed above
 DN6201.which is a decimal equivalence of Year/Month/Day.
 DN6201
 DN6201.The orthometric height was determined by GPS observations and a
 DN6201.high-resolution geoid model using precise GPS observation and
 DN6201.processing techniques.
 DN6201
 DN6201.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6201.GEOID18 height accuracy estimate available here.
 DN6201
 DN6201.Click photographs - Photos may exist for this station.
 DN6201
 DN6201.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6201
 DN6201.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6201
 DN6201.The ellipsoidal height was determined by GPS observations
 DN6201.and is referenced to NAD 83.
 DN6201
 DN6201. The following values were computed from the NAD 83(2011) position.
 DN6201
 DN6201;                    North         East     Units Scale Factor Converg.
 DN6201;SPC MD       -   228,223.534   493,106.850   MT  1.00005777   +0 40 53.4
 DN6201;SPC MD       -   748,763.38  1,617,801.39   sFT  1.00005777   +0 40 53.4
 DN6201;UTM  18      - 4,396,808.411   421,645.101   MT  0.99967558   -0 35 03.1
 DN6201
 DN6201!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6201!SPC MD       -   0.99998479  x   1.00005777  =   1.00004256
 DN6201!UTM  18      -   0.99998479  x   0.99967558  =   0.99966037
 DN6201
 DN6201_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2164596808(NAD 83)
 DN6201
 DN6201                          SUPERSEDED SURVEY CONTROL
 DN6201
 DN6201  NAD 83(2007)-  39 43 03.18544(N)    075 54 51.03155(W) AD(2002.00) 1
 DN6201  ELLIP H (02/23/12)   96.985  (m)                       GP(2002.00) 4 1
 DN6201
 DN6201.Superseded values are not recommended for survey control.
 DN6201
 DN6201.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6201.See file dsdata.pdf to determine how the superseded data were derived.
 DN6201
 DN6201_MARKER: DD = SURVEY DISK
 DN6201_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6201_STAMPING: BLAKE 2008
 DN6201_MARK LOGO: MD-015
 DN6201_PROJECTION: FLUSH
 DN6201_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6201_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6201+STABILITY: SURFACE MOTION
 DN6201_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6201+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2014
 DN6201
 DN6201  HISTORY     - Date     Condition        Report By
 DN6201  HISTORY     - 20081204 MONUMENTED       GWS
 DN6201  HISTORY     - 20140728 GOOD             PADT
 DN6201
 DN6201                          STATION DESCRIPTION
 DN6201
 DN6201'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6201'THE STATION IS LOCATED ABOUT 2.70 MI (4.3 KM) NORTHWEST OF FAIR HILL.
 DN6201'
 DN6201'TO REACH THE STATION FROM THE JUNCTION OF TELEGRAPH ROAD (ROUTE 273)
 DN6201'AND BLUE BALL ROAD (ROUTE 545), PROCEED NORTH ON BLUE BALL ROAD FOR
 DN6201'0.91 MI (1.5 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO EAST
 DN6201'ON BLAKE ROAD FOR 1.27 MI (2.0 KM) TO WOOLENS ROAD ON THE LEFT AND THE
 DN6201'STATION ON THE LEFT.
 DN6201'
 DN6201'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6201'CONCRETE MONUMENT, APPROXIMATELY 126 FT (38.4 M) NORTH OF BLAKE ROAD,
 DN6201'10.6 FT (3.2 M) SOUTHWEST OF THE EDGE OF PAVING OF WOOLENS ROAD, 66.2
 DN6201'FT (20.2 M) NORTHWEST OF A LIGHT POLE ON THE WEST SIDE OF THE
 DN6201'INTERSECTION OF WOOLENS ROAD AND BLAKE ROAD AND 99.7 FT (30.4 M)
 DN6201'SOUTHEAST OF A NAIL IN A UTILITY POLE (CONECTIV 38326/42453).
 DN6201
 DN6201                          STATION RECOVERY (2014)
 DN6201
 DN6201'RECOVERY NOTE BY PA DEPT OF TRANSP 2014 (LMR)
 DN6201'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7274 ***********************************************************************
 HV7274  DESIGNATION -  BLAKE 2
 HV7274  PID         -  HV7274
 HV7274  STATE/COUNTY-  MD/CALVERT
 HV7274  COUNTRY     -  US
 HV7274  USGS QUAD   -  NORTH BEACH (2016)
 HV7274
 HV7274                         *CURRENT SURVEY CONTROL
 HV7274  ______________________________________________________________________
 HV7274* NAD 83(1993) POSITION- 38 39 45.47255(N) 076 32 13.06453(W)   ADJUSTED
 HV7274* NAVD 88 ORTHO HEIGHT -    50.    (meters)      164.    (feet) SCALED
 HV7274  ______________________________________________________________________
 HV7274  GEOID HEIGHT    -        -33.732 (meters)                     GEOID18
 HV7274  LAPLACE CORR    -         -5.19  (seconds)                    DEFLEC18
 HV7274  HORZ ORDER      -  THIRD
 HV7274
 HV7274.The horizontal coordinates were established by classical geodetic methods
 HV7274.and adjusted by the National Geodetic Survey in November 1994.
 HV7274
 HV7274.The orthometric height was scaled from a topographic map.
 HV7274
 HV7274.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7274.GEOID18 height accuracy estimate available here.
 HV7274
 HV7274.Click photographs - Photos may exist for this station.
 HV7274
 HV7274.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7274
 HV7274. The following values were computed from the NAD 83(1993) position.
 HV7274
 HV7274;                    North         East     Units Scale Factor Converg.
 HV7274;SPC MD       -   110,658.157   440,299.151   MT  0.99995673   +0 17 26.2
 HV7274;SPC MD       -   363,050.97  1,444,548.13   sFT  0.99995673   +0 17 26.2
 HV7274;UTM  18      - 4,280,460.133   366,278.481   MT  0.99982020   -0 57 37.2
 HV7274
 HV7274!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7274!SPC MD       -   0.99999749  x   0.99995673  =   0.99995422
 HV7274!UTM  18      -   0.99999749  x   0.99982020  =   0.99981769
 HV7274
 HV7274:                Primary Azimuth Mark                     Grid Az
 HV7274:SPC MD       -  SHARPS ISLAND LIGHTHOUSE                 100 12 30.1
 HV7274:UTM  18      -  SHARPS ISLAND LIGHTHOUSE                 101 27 33.5
 HV7274
 HV7274_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6627880460(NAD 83)
 HV7274
 HV7274|---------------------------------------------------------------------|
 HV7274| PID    Reference Object                     Distance      Geod. Az  |
 HV7274|                                                           dddmmss.s |
 HV7274| HV6142 SHARPS ISLAND LIGHTHOUSE            APPROX.14.3 KM 1002956.3 |
 HV7274| CX2102 BLAKE 2 RM                           52.870 METERS 28030     |
 HV7274|---------------------------------------------------------------------|
 HV7274
 HV7274                          SUPERSEDED SURVEY CONTROL
 HV7274
 HV7274  NAD 83(1986)-  38 39 45.47067(N)    076 32 13.07774(W) AD(       ) 3
 HV7274  NAD 27      -  38 39 45.02600(N)    076 32 14.19800(W) AD(       ) 3
 HV7274  USSD        -  38 39 45.41200(N)    076 32 14.02800(W) AD(       ) 3
 HV7274
 HV7274.Superseded values are not recommended for survey control.
 HV7274
 HV7274.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7274.See file dsdata.pdf to determine how the superseded data were derived.
 HV7274
 HV7274
 HV7274  HISTORY     - Date     Condition        Report By
 HV7274  HISTORY     - 1898     MONUMENTED       CGS
 HV7274  HISTORY     - 1907     GOOD             CGS
 HV7274
 HV7274                          STATION DESCRIPTION
 HV7274
 HV7274'DESCRIBED BY COAST AND GEODETIC SURVEY 1907
 HV7274'ON THE WESTERN SIDE OF CHESAPEAKE BAY, ABOUT MIDWAY BETWEEN PLUM
 HV7274'POINT AND HOG ISLAND, ABOUT 1-3/4 MILES S OF CHESAPEAKE BEACH, ON
 HV7274'THE HIGHEST HILL IN THE VICINITY (171 FEET ELEVATION).  IT IS
 HV7274'ABOUT 80 METERS FROM THE MAIN ROAD AND ABOUT 100 METERS FROM A
 HV7274'SMALL HOUSE AT THE E SIDE OF THE ROAD, OCCUPIED IN 1907 BY PHIL
 HV7274'BROWN.  THE GROUND AROUND THE STATION IS COVERED WITH A GROWTH OF
 HV7274'YOUNG PINES, IN 1907 ABOUT 3 INCHES IN DIAMETER.  LINES OF SIGHT
 HV7274'WERE CUT THROUGH THIS GROWTH OF PINES ALONG THE FOLLOWING
 HV7274'BEARINGS N 24 DEG 00 MIN E, N 43 DEG 00 MIN E AND IN THE DIRECTION
 HV7274'OF SHARPS ISLAND LIGTHOUSE.
 HV7274'
 HV7274'STATION IS MARKED BY TWO 6-INCH DRAIN TILES SET ONE ABOVE THE
 HV7274'OTHER, THE TOP OF THE UPPER ONE BEING ABOUT 8 INCHES BELOW THE
 HV7274'SURFACE OF THE GROUND.  ABOVE THE TILES, FLUSH WITH THE SURFACE,
 HV7274'IS A NAIL IN A 4-INCH PINE STUB.
 HV7274'
 HV7274'IN 1907 A REFERENCE MARK WAS SET CLOSE TO THE FENCE W OF THE
 HV7274'STATION AND ON RANGE WITH SHARPS ISLAND LIGHTHOUSE.  THIS MARK
 HV7274'CONSISTS OF A DRAIN TILE EMBEDDED IN CEMENT, ITS TOP FLUSH WITH
 HV7274'THE GROUND.  IT IS 52.78 METERS (173.2 FEET) FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5025 ***********************************************************************
 JV5025  DESIGNATION -  BLAKEFORD
 JV5025  PID         -  JV5025
 JV5025  STATE/COUNTY-  MD/QUEEN ANNES
 JV5025  COUNTRY     -  US
 JV5025  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5025
 JV5025                         *CURRENT SURVEY CONTROL
 JV5025  ______________________________________________________________________
 JV5025* NAD 83(1991) POSITION- 39 00 17.72262(N) 076 09 46.13795(W)   ADJUSTED
 JV5025* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 JV5025  ______________________________________________________________________
 JV5025  GEOID HEIGHT    -        -33.772 (meters)                     GEOID18
 JV5025  LAPLACE CORR    -         -3.69  (seconds)                    DEFLEC18
 JV5025  HORZ ORDER      -  THIRD
 JV5025
 JV5025.The horizontal coordinates were established by classical geodetic methods
 JV5025.and adjusted by the National Geodetic Survey in January 1992.
 JV5025
 JV5025.The orthometric height was scaled from a topographic map.
 JV5025
 JV5025.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5025.GEOID18 height accuracy estimate available here.
 JV5025
 JV5025.Click photographs - Photos may exist for this station.
 JV5025
 JV5025.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5025
 JV5025. The following values were computed from the NAD 83(1991) position.
 JV5025
 JV5025;                    North         East     Units Scale Factor Converg.
 JV5025;SPC MD       -   148,885.206   472,512.735   MT  0.99995238   +0 31 31.6
 JV5025;SPC MD       -   488,467.55  1,550,235.53   sFT  0.99995238   +0 31 31.6
 JV5025;UTM  18      - 4,317,965.981   399,315.241   MT  0.99972483   -0 43 54.9
 JV5025
 JV5025!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5025!SPC MD       -   1.00000455  x   0.99995238  =   0.99995693
 JV5025!UTM  18      -   1.00000455  x   0.99972483  =   0.99972938
 JV5025
 JV5025:                Primary Azimuth Mark                     Grid Az
 JV5025:SPC MD       -  BLUEBEARD                                221 23 43.9
 JV5025:UTM  18      -  BLUEBEARD                                222 39 10.4
 JV5025
 JV5025_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9931517965(NAD 83)
 JV5025
 JV5025|---------------------------------------------------------------------|
 JV5025| PID    Reference Object                     Distance      Geod. Az  |
 JV5025|                                                           dddmmss.s |
 JV5025| HV5820 BLUEBEARD                           APPROX. 2.7 KM 2215515.5 |
 JV5025|---------------------------------------------------------------------|
 JV5025
 JV5025                          SUPERSEDED SURVEY CONTROL
 JV5025
 JV5025  NAD 83(1986)-  39 00 17.71743(N)    076 09 46.15049(W) AD(       ) 3
 JV5025  NAD 27      -  39 00 17.31800(N)    076 09 47.28700(W) AD(       ) 3
 JV5025  USSD        -  39 00 17.67400(N)    076 09 47.12000(W) AD(       ) 3
 JV5025
 JV5025.Superseded values are not recommended for survey control.
 JV5025
 JV5025.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5025.See file dsdata.pdf to determine how the superseded data were derived.
 JV5025
 JV5025_MARKER: H = DRILL HOLE
 JV5025_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5025_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5025+STABILITY: SURFACE MOTION
 JV5025
 JV5025  HISTORY     - Date     Condition        Report By
 JV5025  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5025  HISTORY     - 1938     MARK NOT FOUND   CGS
 JV5025
 JV5025                          STATION DESCRIPTION
 JV5025
 JV5025'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5025'STATION IS ON THE EASTERN SHORE OF CHESTER RIVER, ABOUT 3/8 MILE
 JV5025'N OF BLAKEFORD POINT AT THE ENTRANCE TO QUEENSTOWN CREEK, ABOUT
 JV5025'15 FEET ABOVE HIGH WATER, 8 YARDS INSHORE, 2 YARDS BACK FROM TOP
 JV5025'OF BANK WITH UNIFORM SLOPE TO BEACH, 25 YARDS N OF GULLY, AND 25
 JV5025'YARDS S OF LARGE SYCAMORE TREE AT FOOT OF SLOPE.
 JV5025'
 JV5025'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5025'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5025'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 3 INCHES.  THE
 JV5025'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5025'POST.  SUBSURFACE MARK IS THE CENTER OF 2-INCH DRAINTILE PIPE,
 JV5025'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5025'
 JV5025'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5025'FOLLOWS--FIRST BLACK BEACON AT ENTRANCE TO QUEENSTOWN CREEK, 1/2
 JV5025'MILE, S 39 DEG 52 MIN W.  CHIMNEY OF FISHING SHACK ON CEDAR POINT, 2
 JV5025'5/8 MILES, N 82 DEG 31 MIN W. NAIL IN BLAZE IN 4-INCH CEDAR TREE,
 JV5025'13.31 METERS (43.7 FEET), N 08 DEG 15 MIN E. NW CORNER OF HOUSE IN
 JV5025'WOODS, 300 YARDS, N 80 DEG 42 MIN E. W GABLE OF SMALL HOUSE, 3/8
 JV5025'MILE, S 80 DEG 38 MIN E. W GABLE OF LARGE BARN, 5/8 MILE, S 39 DEG
 JV5025'16 MIN E.  W GABLE OF HOUSE, 3/4 MILE, S 19 DEG 37 MIN E. NE
 JV5025'CORNER OF ELEVATOR AT QUEENSTOWN, 5/8 MILE, S 15 DEG 36 MIN E.
 JV5025'NAIL IN BLAZE IN 15-INCH ASH TREE, 21.30 METERS (69.9 FEET),
 JV5025'S 07 DEG 57 MIN E.
 JV5025
 JV5025                          STATION RECOVERY (1938)
 JV5025
 JV5025'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5025'STATION LOST DUE TO EROSION OF RIVER BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6947 ***********************************************************************
 HV6947  DESIGNATION -  BLAKISTON ISLAND STONE CROSS
 HV6947  PID         -  HV6947
 HV6947  STATE/COUNTY-  MD/ST MARYS
 HV6947  COUNTRY     -  US
 HV6947  USGS QUAD   -  SAINT CLEMENTS ISLAND (2016)
 HV6947
 HV6947                         *CURRENT SURVEY CONTROL
 HV6947  ______________________________________________________________________
 HV6947* NAD 83(1993) POSITION- 38 12 30.50998(N) 076 44 39.90342(W)   ADJUSTED
 HV6947  ______________________________________________________________________
 HV6947  GEOID HEIGHT    -        -33.756 (meters)                     GEOID18
 HV6947  LAPLACE CORR    -         -2.91  (seconds)                    DEFLEC18
 HV6947  HORZ ORDER      -  THIRD
 HV6947
 HV6947.The horizontal coordinates were established by classical geodetic methods
 HV6947.and adjusted by the National Geodetic Survey in November 1994.
 HV6947
 HV6947.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6947.GEOID18 height accuracy estimate available here.
 HV6947
 HV6947.Click photographs - Photos may exist for this station.
 HV6947
 HV6947.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6947
 HV6947. The following values were computed from the NAD 83(1993) position.
 HV6947
 HV6947;                    North         East     Units Scale Factor Converg.
 HV6947;SPC MD       -    60,174.712   422,385.086   MT  1.00001718   +0 09 37.5
 HV6947;SPC MD       -   197,423.20  1,385,775.07   sFT  1.00001718   +0 09 37.5
 HV6947;SPC VA N     - 2,061,609.617 3,653,746.165   MT  0.99997371   +1 05 44.5
 HV6947;SPC VA N     - 6,763,797.55 11,987,332.21   sFT  0.99997371   +1 05 44.5
 HV6947;UTM  18      - 4,230,384.447   347,273.781   MT  0.99988727   -1 04 45.0
 HV6947
 HV6947_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4727330384(NAD 83)
 HV6947
 HV6947                          SUPERSEDED SURVEY CONTROL
 HV6947
 HV6947  NAD 83(1991)-  38 12 30.50929(N)    076 44 39.90831(W) AD(       ) 3
 HV6947  NAD 83(1986)-  38 12 30.51080(N)    076 44 39.91998(W) AD(       ) 3
 HV6947  NAD 27      -  38 12 30.04195(N)    076 44 41.03881(W) AD(       ) 3
 HV6947
 HV6947.Superseded values are not recommended for survey control.
 HV6947
 HV6947.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6947.See file dsdata.pdf to determine how the superseded data were derived.
 HV6947
 HV6947_MARKER: 74 = LARGE CROSS
 HV6947
 HV6947  HISTORY     - Date     Condition        Report By
 HV6947  HISTORY     - 1934     FIRST OBSERVED   CGS
 HV6947  HISTORY     - 1958     GOOD             CGS
 HV6947  HISTORY     - 1968     GOOD             CGS
 HV6947
 HV6947                          STATION DESCRIPTION
 HV6947
 HV6947'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6947'THE STATION IS LOCATED ON THE NORTHERN SHORE OF THE POTOMAC RIVER,
 HV6947'ABOUT 400 FEET NORTH OF THE SOUTHERN END OF BLAKISTON ISLAND.
 HV6947'
 HV6947'THE STATION IS THE CENTER OF A WHITE STONE CROSS WHICH IS ABOUT 50
 HV6947'FEET HIGH.  IT COMMEMORATES THE FIRST CATHOLIC MASS BY ENGLISH
 HV6947'SETTLERS IN AMERICA ON MARCH 25, 1634.
 HV6947
 HV6947                          STATION RECOVERY (1968)
 HV6947
 HV6947'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (ELH)
 HV6947'THE STATION IS ABOUT 8 MI. SW OF LEONARDTOWN ON THE SOUTHERN PART
 HV6947'OF BLAKISTON ISLAND WHICH IS LOCATED IN THE POTOMAC RIVER ABOUT
 HV6947'1/2 MI. SSE OF COLTON PT.  THE CROSS IS ABOUT 50 FT. HIGH AND
 HV6947'ACCORDING TO LOCAL INFORMATION COMMEMORATES THE LANDING OF THE
 HV6947'FIRST CATHOLICS IN MARYLAND.  THE CENTER OF THE CROSS WAS
 HV6947'INTERSECTED.  THE STATION WAS NOT VISITED.
 HV6947'
 HV6947'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN ABOUT 8 MILES SW
 HV6947'OF LEONARDTOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7054 ***********************************************************************
 HV7054  DESIGNATION -  BLAKISTONE 1908
 HV7054  PID         -  HV7054
 HV7054  STATE/COUNTY-  MD/ST MARYS
 HV7054  COUNTRY     -  US
 HV7054  USGS QUAD   -  ROCK POINT (2016)
 HV7054
 HV7054                         *CURRENT SURVEY CONTROL
 HV7054  ______________________________________________________________________
 HV7054* NAD 83(1993) POSITION- 38 16 55.09258(N) 076 48 10.01885(W)   ADJUSTED
 HV7054* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7054  ______________________________________________________________________
 HV7054  GEOID HEIGHT    -        -33.701 (meters)                     GEOID18
 HV7054  LAPLACE CORR    -         -0.58  (seconds)                    DEFLEC18
 HV7054  HORZ ORDER      -  THIRD
 HV7054
 HV7054.The horizontal coordinates were established by classical geodetic methods
 HV7054.and adjusted by the National Geodetic Survey in November 1994.
 HV7054
 HV7054.The orthometric height was scaled from a topographic map.
 HV7054
 HV7054.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7054.GEOID18 height accuracy estimate available here.
 HV7054
 HV7054.Click photographs - Photos may exist for this station.
 HV7054
 HV7054.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7054
 HV7054. The following values were computed from the NAD 83(1993) position.
 HV7054
 HV7054;                    North         East     Units Scale Factor Converg.
 HV7054;SPC MD       -    68,320.143   417,255.560   MT  1.00000319   +0 07 25.6
 HV7054;SPC MD       -   224,147.00  1,368,945.95   sFT  1.00000319   +0 07 25.6
 HV7054;SPC VA N     - 2,069,669.897 3,648,484.563   MT  0.99996543   +1 03 33.3
 HV7054;SPC VA N     - 6,790,241.99 11,970,069.77   sFT  0.99996543   +1 03 33.3
 HV7054;UTM  18      - 4,238,638.060   342,322.321   MT  0.99990620   -1 07 01.6
 HV7054
 HV7054!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7054!SPC MD       -   1.00000533  x   1.00000319  =   1.00000852
 HV7054!SPC VA N     -   1.00000533  x   0.99996543  =   0.99997076
 HV7054!UTM  18      -   1.00000533  x   0.99990620  =   0.99991153
 HV7054
 HV7054_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4232238638(NAD 83)
 HV7054
 HV7054                          SUPERSEDED SURVEY CONTROL
 HV7054
 HV7054  NAD 83(1991)-  38 16 55.09148(N)    076 48 10.02382(W) AD(       ) 3
 HV7054  NAD 83(1986)-  38 16 55.09254(N)    076 48 10.03458(W) AD(       ) 3
 HV7054  NAD 27      -  38 16 54.59200(N)    076 48 11.13100(W) AD(       ) 3
 HV7054  USSD        -  38 16 54.25300(N)    076 48 11.16300(W) AD(       ) 3
 HV7054
 HV7054.Superseded values are not recommended for survey control.
 HV7054
 HV7054.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7054.See file dsdata.pdf to determine how the superseded data were derived.
 HV7054
 HV7054_MARKER: H = DRILL HOLE
 HV7054_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7054_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7054+STABILITY: SURFACE MOTION
 HV7054
 HV7054  HISTORY     - Date     Condition        Report By
 HV7054  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7054  HISTORY     - 1933     GOOD             CGS
 HV7054  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV7054
 HV7054                          STATION DESCRIPTION
 HV7054
 HV7054'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7054'ON THE EASTERN SHORE OF WICOMICO RIVER, ABOUT 1/4 MILE SE OF
 HV7054'PLOWDENS WHARF AT BUSHWOOD, AND ABOUT 3 MILES NNE OF COBB POINT
 HV7054'BAR LIGHT.  STATION IS ON SECOND BLUFF SE OF BUSHWOOD WHARF, 15
 HV7054'FEET ABOVE HIGH-WATER MARK, 15 YARDS SE OF LARGE DOGWOOD TREE,
 HV7054'ABOUT 6 YARDS NE OF EDGE OF BLUFF, 3 YARDS SW OF RAIL FENCE,
 HV7054'ABOUT 15 YARDS SW OF AN ICE HOUSE NEAR ORCHARD, AND 5 TO 10 YARDS
 HV7054'S TO E OF SEVERAL SMALL CEDAR TREES.  STATION MARK IS CENTER OF
 HV7054'STANDARD MONUMENT OF MARYLAND SHELL FISH SURVEY, WHICH IS MADE OF
 HV7054'CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE AT THE TOP AND
 HV7054'BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND SHOWS A CENTER
 HV7054'HOLE SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK LETTERS M.S.F.C.
 HV7054'ARRANGED AROUND THE VERTEX, AND THE LETTERS U.S.C.S. UNDERNEATH
 HV7054'THE BASE OF THE TRIANGLE.  THE CENTER HOLE IS ALWAYS AT THE
 HV7054'CENTER OF THE MONUMENT AND IF THE MARKING HAS BEEN BROKEN OFF WITHOUT
 HV7054'DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE
 HV7054'USED AS THE LOCATION OF THE STATION.  THE MONUMENT IS SET
 HV7054'VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5 INCHES
 HV7054'ABOVE THE SURFACE.  DISTANCES AND BEARINGS FROM THE STATION TO
 HV7054'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LEFT PEAK OF ROOF OF
 HV7054'WHARF HOUSE, 1-7/8 MILES, N 67 DEG 2 MIN W.  LARGE TREE, 13.36
 HV7054'METERS (43.8 FEET), N 43 DEG 30 MIN W.  CHIMNEY OF BLAKISTON
 HV7054'STORE, 1/4 MILE, N 35 DEG 30 MIN W.  NEAR PEAK OF ROOF OF
 HV7054'BLAKISTON HOUSE, 250 YARDS, N 15 DEG 14 MIN E.  POINT OF CUPOLA ON
 HV7054'RANAHAN HOUSE, 1-3/4 MILES, N 30 DEG 27 MIN E.  NEAR LEFT CORNER
 HV7054'OF SILL OF ICE HOUSE, 14.15 METERS (46.4 FEET), N 71 DEG 57 MIN E.
 HV7054'RIGHT LOWER CORNER, 15.76 METERS (51.7 FEET), S 80 DEG 45 MIN E.
 HV7054'NEAR PEAK OF ROOF, 1/4 MILE, S 28 DEG 24 MIN E.
 HV7054
 HV7054                          STATION RECOVERY (1933)
 HV7054
 HV7054'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (HEC)
 HV7054'STATION RECOVERED.
 HV7054
 HV7054                          STATION RECOVERY (1942)
 HV7054
 HV7054'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7054'THIS STATION WAS THOROUGHLY SEARCHED FOR BY 2 MEN FOR 1-1/2 HOURS.
 HV7054'ACCORDING TO A LOCAL RESIDENT THE MONUMENT HAS BEEN REMOVED BY THE
 HV7054'BANK WASHING AWAY.  IT IS RECOMMENDED THAT THIS STATION BE
 HV7054'CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6093 ***********************************************************************
 HV6093  DESIGNATION -  BLANCO
 HV6093  PID         -  HV6093
 HV6093  STATE/COUNTY-  MD/TALBOT
 HV6093  COUNTRY     -  US
 HV6093  USGS QUAD   -  TILGHMAN (2016)
 HV6093
 HV6093                         *CURRENT SURVEY CONTROL
 HV6093  ______________________________________________________________________
 HV6093* NAD 83(1991) POSITION- 38 44 25.40173(N) 076 16 08.40319(W)   ADJUSTED
 HV6093* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6093  ______________________________________________________________________
 HV6093  GEOID HEIGHT    -        -34.306 (meters)                     GEOID18
 HV6093  LAPLACE CORR    -         -5.13  (seconds)                    DEFLEC18
 HV6093  HORZ ORDER      -  THIRD
 HV6093
 HV6093.The horizontal coordinates were established by classical geodetic methods
 HV6093.and adjusted by the National Geodetic Survey in January 1992.
 HV6093
 HV6093.The orthometric height was scaled from a topographic map.
 HV6093
 HV6093.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6093.GEOID18 height accuracy estimate available here.
 HV6093
 HV6093.Click photographs - Photos may exist for this station.
 HV6093
 HV6093.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6093
 HV6093. The following values were computed from the NAD 83(1991) position.
 HV6093
 HV6093;                    North         East     Units Scale Factor Converg.
 HV6093;SPC MD       -   119,441.918   463,550.886   MT  0.99995263   +0 27 31.7
 HV6093;SPC MD       -   391,869.03  1,520,833.20   sFT  0.99995263   +0 27 31.7
 HV6093;UTM  18      - 4,288,732.328   389,712.592   MT  0.99974978   -0 47 39.2
 HV6093
 HV6093!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6093!SPC MD       -   1.00000526  x   0.99995263  =   0.99995789
 HV6093!UTM  18      -   1.00000526  x   0.99974978  =   0.99975504
 HV6093
 HV6093:                Primary Azimuth Mark                     Grid Az
 HV6093:SPC MD       -  NED                                      276 02 43.9
 HV6093:UTM  18      -  NED                                      277 17 54.8
 HV6093
 HV6093_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8971288732(NAD 83)
 HV6093
 HV6093|---------------------------------------------------------------------|
 HV6093| PID    Reference Object                     Distance      Geod. Az  |
 HV6093|                                                           dddmmss.s |
 HV6093| HV6115 FAIRBANKS                           APPROX. 0.5 KM 0305812.1 |
 HV6093| HV6067 NED                                 APPROX. 0.8 KM 2763015.6 |
 HV6093| HV6090 CAULK                               APPROX. 0.5 KM 3132713.0 |
 HV6093|---------------------------------------------------------------------|
 HV6093
 HV6093                          SUPERSEDED SURVEY CONTROL
 HV6093
 HV6093  NAD 83(1986)-  38 44 25.39820(N)    076 16 08.41775(W) AD(       ) 3
 HV6093  NAD 27      -  38 44 24.97800(N)    076 16 09.61900(W) AD(       ) 3
 HV6093  USSD        -  38 44 25.35500(N)    076 16 09.42800(W) AD(       ) 3
 HV6093
 HV6093.Superseded values are not recommended for survey control.
 HV6093
 HV6093.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6093.See file dsdata.pdf to determine how the superseded data were derived.
 HV6093
 HV6093_MARKER: H = DRILL HOLE
 HV6093_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6093_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6093_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6093
 HV6093  HISTORY     - Date     Condition        Report By
 HV6093  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6093  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6093
 HV6093                          STATION DESCRIPTION
 HV6093
 HV6093'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6093'ON THE SOUTHERN SHORE OF LEADENHAM CREEK, ABOUT 5/8 MILE W OF
 HV6093'WHERE IT ENTERS BROAD CREEK AND 3/4 MILE SW OF ENTRANCE TO GRACE
 HV6093'CREEK, IN A CULTIVATED FIELD, ABOUT 9 FEET ABOVE HIGH WATER, AND
 HV6093'13 YARDS S OF EDGE OF VERTICAL BANK AT SHORE.  STATION IS MARKED
 HV6093'BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV6093'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6093'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6093'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6093'SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE
 HV6093'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV6093'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV6093'REFERENCE ARE AS FOLLOWS--S CHIMNEY OF HOUSE, 1/2 MILE, N 20 DEG
 HV6093'11 MIN W.  E CHIMNEY OF HOUSE, 3/4 MILE, N 6 DEG 55 MIN W.  CHIMNEY
 HV6093'OF HOUSE, 3/4 MILE, N 0 DEG 43 MIN W.  W CHIMNEY OF HOUSE, 3/8
 HV6093'MILE, N 27 DEG 24 MIN E.  W CHIMNEY OF HOUSE, 1-1/4 MILES, N 58
 HV6093'DEG 58 MIN E.  N GABLE OF BARN, 1/4 MILE, S 12 DEG 13 MIN E.
 HV6093
 HV6093                          STATION RECOVERY (1940)
 HV6093
 HV6093'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6093'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  MAY STILL BE INTACT,
 HV6093'BUT DUE TO LACK OF REMAINING REFERENCE OBJECTS, WAS UNABLE TO
 HV6093'DETERMINE EXACT POSITION OF MARK.  FIELD IN WHICH STATION WAS
 HV6093'LOCATED IS NOW OVERGROWN WITH BRUSH AND YOUNG TREES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4968 ***********************************************************************
 JV4968  DESIGNATION -  BLANK
 JV4968  PID         -  JV4968
 JV4968  STATE/COUNTY-  MD/KENT
 JV4968  COUNTRY     -  US
 JV4968  USGS QUAD   -  CHESTERTOWN (2017)
 JV4968
 JV4968                         *CURRENT SURVEY CONTROL
 JV4968  ______________________________________________________________________
 JV4968* NAD 83(1991) POSITION- 39 10 22.48878(N) 076 02 32.87104(W)   ADJUSTED
 JV4968* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV4968  ______________________________________________________________________
 JV4968  GEOID HEIGHT    -        -33.524 (meters)                     GEOID18
 JV4968  LAPLACE CORR    -         -2.34  (seconds)                    DEFLEC18
 JV4968  HORZ ORDER      -  THIRD
 JV4968
 JV4968.The horizontal coordinates were established by classical geodetic methods
 JV4968.and adjusted by the National Geodetic Survey in January 1992.
 JV4968
 JV4968.The orthometric height was scaled from a topographic map.
 JV4968
 JV4968.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4968.GEOID18 height accuracy estimate available here.
 JV4968
 JV4968.Click photographs - Photos may exist for this station.
 JV4968
 JV4968.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4968
 JV4968. The following values were computed from the NAD 83(1991) position.
 JV4968
 JV4968;                    North         East     Units Scale Factor Converg.
 JV4968;SPC MD       -   167,635.693   482,741.058   MT  0.99996326   +0 36 03.5
 JV4968;SPC MD       -   549,984.77  1,583,792.95   sFT  0.99996326   +0 36 03.5
 JV4968;UTM  18      - 4,336,482.762   409,950.306   MT  0.99969984   -0 39 30.7
 JV4968
 JV4968!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4968!SPC MD       -   1.00000514  x   0.99996326  =   0.99996840
 JV4968!UTM  18      -   1.00000514  x   0.99969984  =   0.99970498
 JV4968
 JV4968:                Primary Azimuth Mark                     Grid Az
 JV4968:SPC MD       -  CHAMBERS                                 335 53 04.4
 JV4968:UTM  18      -  CHAMBERS                                 337 08 38.6
 JV4968
 JV4968_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0995036482(NAD 83)
 JV4968
 JV4968|---------------------------------------------------------------------|
 JV4968| PID    Reference Object                     Distance      Geod. Az  |
 JV4968|                                                           dddmmss.s |
 JV4968| JV4950 CHAMBERS                            APPROX. 1.6 KM 3362907.9 |
 JV4968|---------------------------------------------------------------------|
 JV4968
 JV4968                          SUPERSEDED SURVEY CONTROL
 JV4968
 JV4968  NAD 83(1986)-  39 10 22.48142(N)    076 02 32.88403(W) AD(       ) 3
 JV4968  NAD 27      -  39 10 22.09300(N)    076 02 34.07800(W) AD(       ) 3
 JV4968  USSD        -  39 10 22.52700(N)    076 02 33.83900(W) AD(       ) 3
 JV4968
 JV4968.Superseded values are not recommended for survey control.
 JV4968
 JV4968.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4968.See file dsdata.pdf to determine how the superseded data were derived.
 JV4968
 JV4968_MARKER: Z = SEE DESCRIPTION
 JV4968_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4968_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4968+STABILITY: SURFACE MOTION
 JV4968
 JV4968  HISTORY     - Date     Condition        Report By
 JV4968  HISTORY     - 1909     MONUMENTED       MDSFC
 JV4968  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV4968
 JV4968                          STATION DESCRIPTION
 JV4968
 JV4968'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV4968'STATION IS ON THE NORTHWESTERN SHORE OF UPPER CHESTER RIVER,
 JV4968'ABOUT 1/4 MILE W OF ROLPHS WHARF AND 3/4 MILE N OF ENTRANCE TO
 JV4968'SOUTHEAST CREEK, ON A GRASSY POINT ABOUT 2 FEET ABOVE HIGH WATER,
 JV4968'7 YARDS W OF SHORE, 9 YARDS N OF SHORE, 8 YARDS NW OF EXTREME END
 JV4968'OF POINT, AND 40 YARDS FROM A DENSE CLUMP OF TREES.
 JV4968'
 JV4968'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV4968'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV4968'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 JV4968'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK
 JV4968'IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE
 JV4968'PIPE, BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 JV4968'MONUMENT.
 JV4968'
 JV4968'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV4968'FOLLOWS--LEFT PEAK OF SMALL HOUSE AMONG TREES, 1-3/4 MILES, S 7 DEG
 JV4968'05 MIN W.  SPINDLE ON BARN CUPOLA, 1-3/4 MILES, S 17 DEG 43 MIN W.
 JV4968'PEAK OF MIDDLE DORMER WINDOW OF HOUSE, 1-1/4 MILES, N 05 DEG 45 MIN W.
 JV4968'PEAK OF LARGE BARN, 5/8 MILE, N 56 DEG 02 MIN E.  FLAGSTAFF
 JV4968'ON ROLPHS WHARF HOUSE, 1/4 MILE, N 79 DEG 04 MIN E.  WEATHER VANE
 JV4968'ON WHARF HOUSE, 1/4 MILE, S 87 DEG 04 MIN E.  LEFT PEAK OF WHARF
 JV4968'HOUSE, 1/2 MILE, S 25 DEG 53 MIN E.
 JV4968
 JV4968                          STATION RECOVERY (1939)
 JV4968
 JV4968'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4968'STATION SEARCHED FOR BUT UNABLE TO FIND IT.  POINT MENTIONED
 JV4968'IN THE ORIGINAL DESCRIPTION APPEARS TO HAVE BEEN WASHED BACK
 JV4968'AND STATION MAY BE COVERED BY WATER, ALTHOUGH STATION WAS
 JV4968'REVISITED AT LOW WATER AND NO EVIDENCE OF IT COULD BE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5760 ***********************************************************************
 JV5760  DESIGNATION -  BLANK
 JV5760  PID         -  JV5760
 JV5760  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5760  COUNTRY     -  US
 JV5760  USGS QUAD   -  ROUND BAY (2016)
 JV5760
 JV5760                         *CURRENT SURVEY CONTROL
 JV5760  ______________________________________________________________________
 JV5760* NAD 83(1991) POSITION- 39 03 45.85280(N) 076 34 17.62902(W)   ADJUSTED
 JV5760* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5760  ______________________________________________________________________
 JV5760  GEOID HEIGHT    -        -33.045 (meters)                     GEOID18
 JV5760  LAPLACE CORR    -         -5.03  (seconds)                    DEFLEC18
 JV5760  HORZ ORDER      -  THIRD
 JV5760
 JV5760.The horizontal coordinates were established by classical geodetic methods
 JV5760.and adjusted by the National Geodetic Survey in January 1992.
 JV5760
 JV5760.The orthometric height was scaled from a topographic map.
 JV5760
 JV5760.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5760.GEOID18 height accuracy estimate available here.
 JV5760
 JV5760.Click photographs - Photos may exist for this station.
 JV5760
 JV5760.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5760
 JV5760. The following values were computed from the NAD 83(1991) position.
 JV5760
 JV5760;                    North         East     Units Scale Factor Converg.
 JV5760;SPC MD       -   155,057.699   437,079.307   MT  0.99995515   +0 16 08.0
 JV5760;SPC MD       -   508,718.47  1,433,984.36   sFT  0.99995515   +0 16 08.0
 JV5760;UTM  18      - 4,324,913.861   364,032.259   MT  0.99982764   -0 59 25.8
 JV5760
 JV5760!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5760!SPC MD       -   1.00000428  x   0.99995515  =   0.99995943
 JV5760!UTM  18      -   1.00000428  x   0.99982764  =   0.99983192
 JV5760
 JV5760:                Primary Azimuth Mark                     Grid Az
 JV5760:SPC MD       -  CEDAR 2                                  085 52 46.8
 JV5760:UTM  18      -  CEDAR 2                                  087 08 20.6
 JV5760
 JV5760_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6403224913(NAD 83)
 JV5760
 JV5760|---------------------------------------------------------------------|
 JV5760| PID    Reference Object                     Distance      Geod. Az  |
 JV5760|                                                           dddmmss.s |
 JV5760| JV5761 BLANK 2                               6.998 METERS 05155     |
 JV5760| JV5747 CEDAR 2                             APPROX. 0.5 KM 0860854.8 |
 JV5760| CA9977 BLANK RM 1                           14.900 METERS 17826     |
 JV5760|---------------------------------------------------------------------|
 JV5760
 JV5760                          SUPERSEDED SURVEY CONTROL
 JV5760
 JV5760  NAD 83(1986)-  39 03 45.84932(N)    076 34 17.63931(W) AD(       ) 3
 JV5760  NAD 27      -  39 03 45.45700(N)    076 34 18.76400(W) AD(       ) 3
 JV5760
 JV5760.Superseded values are not recommended for survey control.
 JV5760
 JV5760.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5760.See file dsdata.pdf to determine how the superseded data were derived.
 JV5760
 JV5760_MARKER: DS = TRIANGULATION STATION DISK
 JV5760_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5760
 JV5760  HISTORY     - Date     Condition        Report By
 JV5760  HISTORY     - 1934     MONUMENTED       CGS
 JV5760  HISTORY     - 1943     SEE DESCRIPTION  CGS
 JV5760  HISTORY     - 1944     MARK NOT FOUND   CGS
 JV5760
 JV5760                          STATION DESCRIPTION
 JV5760
 JV5760'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5760'ON S SHORE OF SEVERN RIVER, ANNE ARUNDEL COUNTY, MARYLAND.  STATION
 JV5760'IS ABOUT 60 FEET FROM SHORELINE ON POINT JUST S OF MOUTH OF
 JV5760'VALENTINE CREEK.
 JV5760'
 JV5760'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5760'CONCRETE.
 JV5760'
 JV5760'REFERENCE MARK IS NEAR FENCE ON RANGE WITH STATION AND RED STONE
 JV5760'HOUSE ON BLUFF.
 JV5760
 JV5760                          STATION RECOVERY (1943)
 JV5760
 JV5760'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV5760'THE STATION AND REFERENCE MARK NO. 1 WAS RECOVERED AND FOUND IN
 JV5760'GOOD CONDITION.  ONE NEW MARK WAS ESTABLISHED, AZIMUTH MARK 1943,
 JV5760'THE TOP OF A STEEL WIND CHARGER MAST LOCATED ON A BLUFF IN THE
 JV5760'NORTHWEST ANGLE OF THE JUNCTION OF VALENTINE CREEK WITH THE
 JV5760'SEVERN RIVER.  THE STATION WAS MOVED TO A NEW LOCATION AT THE
 JV5760'REQUEST OF THE OWNER, C.W. EVANS OF BALTIMORE, MD., FOR NEW
 JV5760'LOCATION OF STATION SEE DESCRIPTION BLANK 2 BY G.W.L. 1943.
 JV5760
 JV5760                          STATION RECOVERY (1944)
 JV5760
 JV5760'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944 (CWE)
 JV5760'REFERENCE MARK 1 DISK WAS REMOVED.  (RECEIVED IN WASHINGTON OFFICE
 JV5760'2/8/44.)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5761 ***********************************************************************
 JV5761  DESIGNATION -  BLANK 2
 JV5761  PID         -  JV5761
 JV5761  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5761  COUNTRY     -  US
 JV5761  USGS QUAD   -  ROUND BAY (2016)
 JV5761
 JV5761                         *CURRENT SURVEY CONTROL
 JV5761  ______________________________________________________________________
 JV5761* NAD 83(1991) POSITION- 39 03 45.99278(N) 076 34 17.39991(W)   ADJUSTED
 JV5761* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5761  ______________________________________________________________________
 JV5761  GEOID HEIGHT    -        -33.045 (meters)                     GEOID18
 JV5761  LAPLACE CORR    -         -5.03  (seconds)                    DEFLEC18
 JV5761  HORZ ORDER      -  THIRD
 JV5761
 JV5761.The horizontal coordinates were established by classical geodetic methods
 JV5761.and adjusted by the National Geodetic Survey in January 1992.
 JV5761
 JV5761.The orthometric height was scaled from a topographic map.
 JV5761
 JV5761.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5761.GEOID18 height accuracy estimate available here.
 JV5761
 JV5761.Click photographs - Photos may exist for this station.
 JV5761
 JV5761.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5761
 JV5761. The following values were computed from the NAD 83(1991) position.
 JV5761
 JV5761;                    North         East     Units Scale Factor Converg.
 JV5761;SPC MD       -   155,062.041   437,084.794   MT  0.99995516   +0 16 08.2
 JV5761;SPC MD       -   508,732.71  1,434,002.36   sFT  0.99995516   +0 16 08.2
 JV5761;UTM  18      - 4,324,918.081   364,037.840   MT  0.99982762   -0 59 25.7
 JV5761
 JV5761!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5761!SPC MD       -   1.00000428  x   0.99995516  =   0.99995944
 JV5761!UTM  18      -   1.00000428  x   0.99982762  =   0.99983190
 JV5761
 JV5761:                Primary Azimuth Mark                     Grid Az
 JV5761:SPC MD       -  CEDAR 2                                  086 18 06.9
 JV5761:UTM  18      -  CEDAR 2                                  087 33 40.8
 JV5761
 JV5761_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6403724918(NAD 83)
 JV5761
 JV5761|---------------------------------------------------------------------|
 JV5761| PID    Reference Object                     Distance      Geod. Az  |
 JV5761|                                                           dddmmss.s |
 JV5761| JV5747 CEDAR 2                             APPROX. 0.5 KM 0863415.1 |
 JV5761| CA9977 BLANK RM 1                           19.876 METERS 19452     |
 JV5761|---------------------------------------------------------------------|
 JV5761
 JV5761                          SUPERSEDED SURVEY CONTROL
 JV5761
 JV5761  NAD 83(1986)-  39 03 45.98929(N)    076 34 17.41020(W) AD(       ) 3
 JV5761  NAD 27      -  39 03 45.59700(N)    076 34 18.53500(W) AD(       ) 3
 JV5761
 JV5761.Superseded values are not recommended for survey control.
 JV5761
 JV5761.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5761.See file dsdata.pdf to determine how the superseded data were derived.
 JV5761
 JV5761_MARKER: DS = TRIANGULATION STATION DISK
 JV5761_SETTING: 0 = UNSPECIFIED SETTING
 JV5761
 JV5761  HISTORY     - Date     Condition        Report By
 JV5761  HISTORY     - 1943     MONUMENTED       CGS
 JV5761  HISTORY     - 1960     MARK NOT FOUND   CGS
 JV5761
 JV5761                          STATION DESCRIPTION
 JV5761
 JV5761'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV5761'THE STATION IS LOCATED IN HERALD HARBOR, ON THE WEST SHORE OF THE
 JV5761'SEVERN RIVER AND ABOUT 60 YARDS SOUTH OF THE MOUTH OF VALENTINE
 JV5761'CREEK.  IT IS ON LOT NO. 10, OWNED BY C.W. EVANS OF BALTIMORE,
 JV5761'MD., AT THE NORTH END OF NORTH RIVERSIDE DRIVE.  IT IS 22 FEET
 JV5761'WEST OF A ROCK AND MASONRY SEA WALL ALONG THE SEVERN RIVER AND 53
 JV5761'FEET N. OF A FENCE LINE ALONG THE NORTH SIDE OF NORTH RIVERSIDE
 JV5761'DRIVE.  IT IS STAMPED BLANK 1934 AND IS FLUSH WITH THE SURFACE
 JV5761'OF THE GROUND.  (NOTE.  IF THIS STATION IS VISITED IN THE FUTURE
 JV5761'IT SHOULD BE STAMPED 2.)
 JV5761'
 JV5761'REFERENCE MARK NO. 1 IS SOUTHWEST OF THE STATION, 4 FEET NORTH OF
 JV5761'THE FENCE LINE ON THE N. SIDE OF N. RIVERSIDE DRIVE AND 26 FEET
 JV5761'WEST OF THE WEST POST OF A GATE.  IT IS STAMPED BLANK NO. 1 1934
 JV5761'AND IS FLUSH WITH THE SURFACE OF THE GROUND.  THE AZIMUTH MARK
 JV5761'FOR THIS STATION IS THE TOP OF A STEEL MAST OF A WIND CHARGER
 JV5761'LOCATED ABOUT 0.3 MILE NORTH OF THE STATION, IT IS ON A BLUFF IN
 JV5761'THE NORTHWEST ANGLE OF THE JUNCTION OF VALENTINE CREEK AND THE
 JV5761'SEVERN RIVER.
 JV5761
 JV5761                          STATION RECOVERY (1960)
 JV5761
 JV5761'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 JV5761'STATION AND REFERENCE MARK WERE NOT FOUND.  THE PROPERTY OWNERS
 JV5761'OF THIS POINT STATE THAT THE WHOLE POINT WAS FILLED BEFORE THE
 JV5761'HOUSES WERE BUILT IN 1946.  THIS STATION SHOULD BE CLASSED AS
 JV5761'LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4956 ***********************************************************************
 JV4956  DESIGNATION -  BLIND
 JV4956  PID         -  JV4956
 JV4956  STATE/COUNTY-  MD/KENT
 JV4956  COUNTRY     -  US
 JV4956  USGS QUAD   -  CHESTERTOWN (2017)
 JV4956
 JV4956                         *CURRENT SURVEY CONTROL
 JV4956  ______________________________________________________________________
 JV4956* NAD 83(1991) POSITION- 39 10 47.38563(N) 076 03 08.06544(W)   ADJUSTED
 JV4956* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV4956  ______________________________________________________________________
 JV4956  GEOID HEIGHT    -        -33.502 (meters)                     GEOID18
 JV4956  LAPLACE CORR    -         -2.30  (seconds)                    DEFLEC18
 JV4956  HORZ ORDER      -  THIRD
 JV4956
 JV4956.The horizontal coordinates were established by classical geodetic methods
 JV4956.and adjusted by the National Geodetic Survey in January 1992.
 JV4956
 JV4956.The orthometric height was scaled from a topographic map.
 JV4956
 JV4956.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4956.GEOID18 height accuracy estimate available here.
 JV4956
 JV4956.Click photographs - Photos may exist for this station.
 JV4956
 JV4956.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4956
 JV4956. The following values were computed from the NAD 83(1991) position.
 JV4956
 JV4956;                    North         East     Units Scale Factor Converg.
 JV4956;SPC MD       -   168,394.591   481,888.350   MT  0.99996389   +0 35 41.4
 JV4956;SPC MD       -   552,474.59  1,580,995.36   sFT  0.99996389   +0 35 41.4
 JV4956;UTM  18      - 4,337,260.017   409,114.706   MT  0.99970171   -0 39 53.3
 JV4956
 JV4956!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4956!SPC MD       -   1.00000482  x   0.99996389  =   0.99996871
 JV4956!UTM  18      -   1.00000482  x   0.99970171  =   0.99970653
 JV4956
 JV4956:                Primary Azimuth Mark                     Grid Az
 JV4956:SPC MD       -  EMORY                                    285 24 03.5
 JV4956:UTM  18      -  EMORY                                    286 39 38.2
 JV4956
 JV4956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0911437260(NAD 83)
 JV4956
 JV4956|---------------------------------------------------------------------|
 JV4956| PID    Reference Object                     Distance      Geod. Az  |
 JV4956|                                                           dddmmss.s |
 JV4956| JV4996 EMORY                               APPROX. 1.4 KM 2855944.9 |
 JV4956|---------------------------------------------------------------------|
 JV4956
 JV4956                          SUPERSEDED SURVEY CONTROL
 JV4956
 JV4956  NAD 83(1986)-  39 10 47.37811(N)    076 03 08.07805(W) AD(       ) 3
 JV4956  NAD 27      -  39 10 46.98800(N)    076 03 09.26800(W) AD(       ) 3
 JV4956  USSD        -  39 10 47.42600(N)    076 03 09.03600(W) AD(       ) 3
 JV4956
 JV4956.Superseded values are not recommended for survey control.
 JV4956
 JV4956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4956.See file dsdata.pdf to determine how the superseded data were derived.
 JV4956
 JV4956_MARKER: N = NAIL
 JV4956_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4956_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4956
 JV4956  HISTORY     - Date     Condition        Report By
 JV4956  HISTORY     - 1909     MONUMENTED       CGS
 JV4956  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV4956
 JV4956                          STATION DESCRIPTION
 JV4956
 JV4956'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JV4956'STATION IS ON THE SW SHORE OF CHESTER RIVER, ON A LOW GRASSY POINT
 JV4956'COVERED WITH BRUSH, DIRECTLY ACROSS THE RIVER FROM CHAMBERS
 JV4956'WHARF.  STATION IS 10 METERS BACK FROM HIGH-WATER MARK.
 JV4956'
 JV4956'STATION IS MARKED BY ROUND BLACK QUART BOTTLE BURIED 3 FEET
 JV4956'AND A NAIL IN CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN
 JV4956'THE TOP OF A 4-INCH DRAINTILE AT THE SURFACE OF THE GROUND.  THE
 JV4956'REFERENCE MARK IS A QUART BOTTLE BURIED 3 FEET AND A NAIL IN
 JV4956'CONCRETE IN THE TOP OF A 3-INCH DRAINTILE FLUSH WITH THE
 JV4956'SURFACE OF THE GROUND.  REFERENCE MARK IS 10.415 METERS (34.17
 JV4956'FEET) FROM THE STATION N 87 DEG 16 MIN W.
 JV4956
 JV4956                          STATION RECOVERY (1939)
 JV4956
 JV4956'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4956'UNABLE TO RECOVER STATION.  REPORTED TO BE GONE BY PROPERTY OWNER,
 JV4956'S.H. BROWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4166 ***********************************************************************
 JV4166  DESIGNATION -  BLOCKS
 JV4166  PID         -  JV4166
 JV4166  STATE/COUNTY-  MD/CARROLL
 JV4166  COUNTRY     -  US
 JV4166  USGS QUAD   -  LITTLESTOWN (2019)
 JV4166
 JV4166                         *CURRENT SURVEY CONTROL
 JV4166  ______________________________________________________________________
 JV4166* NAD 83(1991) POSITION- 39 41 56.23993(N) 077 05 42.27287(W)   ADJUSTED
 JV4166* NAVD 88 ORTHO HEIGHT -   224.    (meters)      735.    (feet) SCALED
 JV4166  ______________________________________________________________________
 JV4166  GEOID HEIGHT    -        -32.915 (meters)                     GEOID18
 JV4166  LAPLACE CORR    -          5.13  (seconds)                    DEFLEC18
 JV4166  HORZ ORDER      -  FIRST
 JV4166
 JV4166.The horizontal coordinates were established by classical geodetic methods
 JV4166.and adjusted by the National Geodetic Survey in January 1992.
 JV4166
 JV4166.The orthometric height was scaled from a topographic map.
 JV4166
 JV4166.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4166.GEOID18 height accuracy estimate available here.
 JV4166
 JV4166.Click photographs - Photos may exist for this station.
 JV4166
 JV4166.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4166
 JV4166. The following values were computed from the NAD 83(1991) position.
 JV4166
 JV4166;                    North         East     Units Scale Factor Converg.
 JV4166;SPC MD       -   225,609.247   391,845.139   MT  1.00005304   -0 03 34.8
 JV4166;SPC MD       -   740,186.34  1,285,578.59   sFT  1.00005304   -0 03 34.8
 JV4166;SPC PA S     -    40,805.405   656,173.333   MT  1.00004491   +0 25 29.7
 JV4166;SPC PA S     -   133,875.73  2,152,795.34   sFT  1.00004491   +0 25 29.7
 JV4166;UTM  18      - 4,396,443.336   320,374.646   MT  0.99999725   -1 20 18.9
 JV4166
 JV4166!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4166!SPC MD       -   0.99997005  x   1.00005304  =   1.00002309
 JV4166!SPC PA S     -   0.99997005  x   1.00004491  =   1.00001496
 JV4166!UTM  18      -   0.99997005  x   0.99999725  =   0.99996730
 JV4166
 JV4166:                Primary Azimuth Mark                     Grid Az
 JV4166:SPC MD       -  BLOCKS AZ MK                             043 58 07.2
 JV4166:SPC PA S     -  BLOCKS AZ MK                             043 29 02.7
 JV4166:UTM  18      -  BLOCKS AZ MK                             045 14 51.3
 JV4166
 JV4166_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2037496443(NAD 83)
 JV4166
 JV4166|---------------------------------------------------------------------|
 JV4166| PID    Reference Object                     Distance      Geod. Az  |
 JV4166|                                                           dddmmss.s |
 JV4166| JV4167 LITTLESTOWN ST PAULS EV SPIRE       APPROX. 5.0 KM 0044249.8 |
 JV4166| CK6683 BLOCKS AZ MK                                       0435432.4 |
 JV4166| CK6684 BLOCKS RM 1                          15.355 METERS 06437     |
 JV4166| CK6685 BLOCKS RM 2                          13.975 METERS 13232     |
 JV4166|---------------------------------------------------------------------|
 JV4166
 JV4166                          SUPERSEDED SURVEY CONTROL
 JV4166
 JV4166  NAD 83(1986)-  39 41 56.23899(N)    077 05 42.27555(W) AD(       ) 1
 JV4166  NAD 27      -  39 41 55.87700(N)    077 05 43.33400(W) AD(       ) 1
 JV4166
 JV4166.Superseded values are not recommended for survey control.
 JV4166
 JV4166.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4166.See file dsdata.pdf to determine how the superseded data were derived.
 JV4166
 JV4166_MARKER: DS = TRIANGULATION STATION DISK
 JV4166_SETTING: 66 = SET IN ROCK OUTCROP
 JV4166_STAMPING: BLOCKS 1939
 JV4166_MARK LOGO: CGS
 JV4166_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4166+STABILITY: POSITION/ELEVATION WELL
 JV4166
 JV4166  HISTORY     - Date     Condition        Report By
 JV4166  HISTORY     - 1939     MONUMENTED       CGS
 JV4166  HISTORY     - 1942     GOOD             CGS
 JV4166
 JV4166                          STATION DESCRIPTION
 JV4166
 JV4166'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4166'THE STATION IS LOCATED ABOUT 5 MILES NE OF TANEYTOWN, 3 MILES S
 JV4166'OF LITTLESTOWN, PENNSYLVANIA AND ABOUT 1.5 MILES S OF THE STATE
 JV4166'LINE ON PROPERTY OWNED AND OCCUPIED BY MR. DAVID CRABBS.  THE
 JV4166'MARK IS SET IN OUTCROPPING ROCK ON THE TOP OF THE HIGHEST HILL IN
 JV4166'THE VICINITY, IN THE E END OF A WOODS, 75 FEET W OF THE W EDGE
 JV4166'OF A CULTIVATED FIELD, 70 FEET W OF A BLAZED 5-INCH HICKORY
 JV4166'TREE, 12 FEET WSW OF A TRIANGLE-BLAZED 8-INCH HICKORY TREE, AND
 JV4166'15 FEET S OF THE HIGHEST ROCK OUTCROP.
 JV4166'
 JV4166'SURFACE AND REFERENCE MARKS ARE STANDARD DISKS SET IN DRILL
 JV4166'HOLES IN OUTCROPPING BEDROCK.
 JV4166'
 JV4166'NO UNDERGROUND MARK WAS SET.
 JV4166'
 JV4166'AZIMUTH MARK IS A STANDARD DISK SET IN CONCRETE, AS DESCRIBED
 JV4166'IN NOTE 11A.
 JV4166'
 JV4166'REFERENCE MARK NO.1 IS NNE OF THE STATION AND ABOUT 6 FEET
 JV4166'LOWER, SET IN TOP OF ROCK FLUSH WITH THE GROUND, AND 22 FEET S OF
 JV4166'A BLAZED 5-INCH HICKORY TREE.
 JV4166'
 JV4166'REFERENCE MARK NO.2 IS SE OF THE STATION AND ABOUT 4 FEET LOWER,
 JV4166'4 FEET N OF A SMALL CEDAR TREE.
 JV4166'
 JV4166'THE AZIMUTH MARK IS ABOUT 0.6 MILE (AIR LINE) NE OF THE STATION
 JV4166'ON THE TOP OF A RIDGE AND IN THE W EDGE OF A WOODS, ABOUT 0.15
 JV4166'MILE ESE OF A CANNING FACTORY, 8 FEET S OF A 6-INCH OAK TREE.
 JV4166'
 JV4166'TO REACH THE STATION FROM THE INTERSECTION OF STATE ROUTES 32
 JV4166'AND 71 IN TANEYTOWN GO NE ON ROUTE 71 FOR 5.3 MILES TO THE STATE
 JV4166'LINE, CONTINUE N FOR 0.45 MILE TO CROSSROADS, TURN RIGHT ON PAVED
 JV4166'ROAD AND GO 0.9 MILE TO FORKS AT OLD MILL AT END OF PAVEMENT AND
 JV4166'JUST AFTER CROSSING A BRIDGE, TAKE RIGHT FORK AND GO 1.4 MILES
 JV4166'TO A REVERSE Y-INTERSECTION* AND CANNING PLANT ON LEFT, TURN
 JV4166'RIGHT AND GO 0.1 MILE TO LANE ON RIGHT AND TURN RIGHT AND GO 0.4
 JV4166'MILE TO MR. CRABBS HOUSE, CONTINUE ON LANE PASSING BETWEEN
 JV4166'HOUSE AND BARN AND GO 0.1 MILE TO GATE, PASS THROUGH GATE AND
 JV4166'GO SW TO TOP OF HILL AND STATION.
 JV4166'
 JV4166'*TO REACH THE AZIMUTH FROM THIS POINT TURN LEFT AND GO AROUND
 JV4166'THE N SIDE OF FACTORY.  FOLLOW THE LANE TO FIRST SHARP LEFT TURN,
 JV4166'OR 0.1 MILE FROM THIS POINT GO S ACROSS FIELD 0.1 MILE TO TOP OF
 JV4166'RIDGE AND MARK.
 JV4166'
 JV4166'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4166
 JV4166                          STATION RECOVERY (1942)
 JV4166
 JV4166'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (PLB)
 JV4166'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS FOUND IN
 JV4166'GOOD CONDITION.  THE ORIGINAL DESCRIPTION IS ACCURATE AND COMPLETE
 JV4166'IN DETAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6457 ***********************************************************************
 HV6457  DESIGNATION -  BLOOD 1901
 HV6457  PID         -  HV6457
 HV6457  STATE/COUNTY-  MD/DORCHESTER
 HV6457  COUNTRY     -  US
 HV6457  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6457
 HV6457                         *CURRENT SURVEY CONTROL
 HV6457  ______________________________________________________________________
 HV6457* NAD 83(1991) POSITION- 38 11 29.38847(N) 076 02 13.43755(W)   ADJUSTED
 HV6457* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6457  ______________________________________________________________________
 HV6457  GEOID HEIGHT    -        -35.643 (meters)                     GEOID18
 HV6457  LAPLACE CORR    -         -1.80  (seconds)                    DEFLEC18
 HV6457  HORZ ORDER      -  THIRD
 HV6457
 HV6457.The horizontal coordinates were established by classical geodetic methods
 HV6457.and adjusted by the National Geodetic Survey in January 1992.
 HV6457
 HV6457.The orthometric height was scaled from a topographic map.
 HV6457
 HV6457.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6457.GEOID18 height accuracy estimate available here.
 HV6457
 HV6457.Click photographs - Photos may exist for this station.
 HV6457
 HV6457.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6457
 HV6457. The following values were computed from the NAD 83(1991) position.
 HV6457
 HV6457;                    North         East     Units Scale Factor Converg.
 HV6457;SPC MD       -    58,703.667   484,356.637   MT  1.00002065   +0 36 15.7
 HV6457;SPC MD       -   192,596.95  1,589,093.40   sFT  1.00002065   +0 36 15.7
 HV6457;UTM  18      - 4,227,570.534   409,184.475   MT  0.99970157   -0 38 28.5
 HV6457
 HV6457!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6457!SPC MD       -   1.00000547  x   1.00002065  =   1.00002612
 HV6457!UTM  18      -   1.00000547  x   0.99970157  =   0.99970704
 HV6457
 HV6457:                Primary Azimuth Mark                     Grid Az
 HV6457:SPC MD       -  SHARKFIN SHOAL LIGHTHOUSE 1898           074 22 13.4
 HV6457:UTM  18      -  SHARKFIN SHOAL LIGHTHOUSE 1898           075 36 57.6
 HV6457
 HV6457_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0918427570(NAD 83)
 HV6457
 HV6457|---------------------------------------------------------------------|
 HV6457| PID    Reference Object                     Distance      Geod. Az  |
 HV6457|                                                           dddmmss.s |
 HV6457| HU1903 SHARKFIN SHOAL LIGHTHOUSE 1898      APPROX. 4.6 KM 0745829.1 |
 HV6457| HU1890 DEAL ISLAND CHURCH SPIRE            APPROX. 8.7 KM 1172448.7 |
 HV6457| HV6463 PEARL                               APPROX. 2.0 KM 1371927.0 |
 HV6457| HV6449 BISHOP 2 1898                       APPROX. 3.8 KM 3424415.5 |
 HV6457|---------------------------------------------------------------------|
 HV6457
 HV6457                          SUPERSEDED SURVEY CONTROL
 HV6457
 HV6457  NAD 83(1986)-  38 11 29.38842(N)    076 02 13.45644(W) AD(       ) 3
 HV6457  NAD 27      -  38 11 28.94100(N)    076 02 14.66300(W) AD(       ) 3
 HV6457  USSD        -  38 11 29.32200(N)    076 02 14.42600(W) AD(       ) 3
 HV6457
 HV6457.Superseded values are not recommended for survey control.
 HV6457
 HV6457.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6457.See file dsdata.pdf to determine how the superseded data were derived.
 HV6457
 HV6457_MARKER: N = NAIL
 HV6457_SETTING: 0 = UNSPECIFIED SETTING
 HV6457_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6457
 HV6457  HISTORY     - Date     Condition        Report By
 HV6457  HISTORY     - 1901     MONUMENTED       CGS
 HV6457  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6457
 HV6457                          STATION DESCRIPTION
 HV6457
 HV6457'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (GLF)
 HV6457'STATION IS ON THE WESTERN SIDE OF TANGIER SOUND, ON THE NE CORNER
 HV6457'OF BLOODWORTH ISLAND, ON NORTHERN SHORE OF LARGE COVE (PINEY ISLAND
 HV6457'COVE), AND ON THE SOUTHERN OF THE TWO POINTS FORMING THE CAPE
 HV6457'BETWEEN THIS COVE AND HOOPER STRAIT.  STATION IS IN MARSH ABOUT
 HV6457'80 METERS NW FROM EXTREME POINT AND ABOUT MIDWAY BETWEEN THE
 HV6457'SHORE TO THE E AND A SMALL DRAIN TO THE W, BEING ABOUT 50 METERS
 HV6457'FROM EACH.  STATION MARKED BY A NAIL IN PINE STUB PASSING
 HV6457'THROUGH TWO 4-INCH TILE PIPES SO SET IN THE MARSH THAT THE TOP
 HV6457'OF THE UPPER ONE IS 4 OR 5 INCHES BELOW THE SURFACE OF THE
 HV6457'GROUND, WHILE THE TOP OF THE STAKE IS ABOUT EVEN WITH THE
 HV6457'SURFACE.
 HV6457
 HV6457                          STATION RECOVERY (1942)
 HV6457
 HV6457'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6457'THE POINT MENTIONED IN DESCRIPTION IS ALMOST SUBMERGED IN WATER
 HV6457'AT THE PRESENT TIME, AND A THOROUGH SEARCH WAS MADE WITH NO RESULT.
 HV6457'
 HV6457'IT IS RECOMMENDED THAT STATION BLOOD BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6471 ***********************************************************************
 HV6471  DESIGNATION -  BLOODWORTH IS TARGET W
 HV6471  PID         -  HV6471
 HV6471  STATE/COUNTY-  MD/DORCHESTER
 HV6471  COUNTRY     -  US
 HV6471  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6471
 HV6471                         *CURRENT SURVEY CONTROL
 HV6471  ______________________________________________________________________
 HV6471* NAD 83(1991) POSITION- 38 09 51.23168(N) 076 03 34.46068(W)   ADJUSTED
 HV6471  ______________________________________________________________________
 HV6471  GEOID HEIGHT    -        -35.665 (meters)                     GEOID18
 HV6471  LAPLACE CORR    -         -1.73  (seconds)                    DEFLEC18
 HV6471  HORZ ORDER      -  THIRD
 HV6471
 HV6471.The horizontal coordinates were established by classical geodetic methods
 HV6471.and adjusted by the National Geodetic Survey in January 1992.
 HV6471
 HV6471.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6471.GEOID18 height accuracy estimate available here.
 HV6471
 HV6471.Click photographs - Photos may exist for this station.
 HV6471
 HV6471.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6471
 HV6471. The following values were computed from the NAD 83(1991) position.
 HV6471
 HV6471;                    North         East     Units Scale Factor Converg.
 HV6471;SPC MD       -    55,656.706   482,416.238   MT  1.00002639   +0 35 24.9
 HV6471;SPC MD       -   182,600.38  1,582,727.27   sFT  1.00002639   +0 35 24.9
 HV6471;UTM  18      - 4,224,567.423   407,178.956   MT  0.99970611   -0 39 17.2
 HV6471
 HV6471_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0717824567(NAD 83)
 HV6471
 HV6471                          SUPERSEDED SURVEY CONTROL
 HV6471
 HV6471  NAD 83(1986)-  38 09 51.23211(N)    076 03 34.47947(W) AD(       ) 3
 HV6471  NAD 27      -  38 09 50.78400(N)    076 03 35.69700(W) AD(       ) 3
 HV6471
 HV6471.Superseded values are not recommended for survey control.
 HV6471
 HV6471.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6471.See file dsdata.pdf to determine how the superseded data were derived.
 HV6471
 HV6471
 HV6471  HISTORY     - Date     Condition        Report By
 HV6471  HISTORY     - 1948     MONUMENTED       CGS
 HV6471  HISTORY     - 1950     GOOD             CGS
 HV6471
 HV6471                          STATION DESCRIPTION
 HV6471
 HV6471'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (RHT)
 HV6471'THE STATION IS ON THE E SHORE OF CHESAPEAKE BAY, ON THE W SIDE OF
 HV6471'BLOODSWORTH ISLAND, ON THE E SHORE OF NORTHEAST COVE.  THE TOP OF
 HV6471'A PYRAMIDAL TARGET WITH BATTENS.
 HV6471
 HV6471                          STATION RECOVERY (1950)
 HV6471
 HV6471'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HV6471'STATION WAS RECOVERED IN GOOD CONDITION.  THE STATION IS THE POINT
 HV6471'OF THE WOODEN PYRAMIDAL TARGET ERECTED BY THE U.S. NAVY ON THE
 HV6471'S SIDE OF BLOODSWORTH ISLAND.  IT IS THE N OF TWO TARGETS ON THE
 HV6471'E SIDE OF NORTHEAST COVE, AT THE HIGH-WATER LINE, AND IS ABOUT 1/2
 HV6471'MILE SE OF THE ENTRANCE OF SWAN POND CREEK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1264 ***********************************************************************
 JW1264  DESIGNATION -  BLOOMINGTON
 JW1264  PID         -  JW1264
 JW1264  STATE/COUNTY-  MD/GARRETT
 JW1264  COUNTRY     -  US
 JW1264  USGS QUAD   -  WESTERNPORT (2016)
 JW1264
 JW1264                         *CURRENT SURVEY CONTROL
 JW1264  ______________________________________________________________________
 JW1264* NAD 83(1995) POSITION- 39 26 25.88216(N) 079 07 17.33084(W)   ADJUSTED
 JW1264* NAVD 88 ORTHO HEIGHT -   516.6   (meters)     1695.    (feet) VERTCON3
 JW1264  ______________________________________________________________________
 JW1264  GEOID HEIGHT    -        -31.764 (meters)                     GEOID18
 JW1264  LAPLACE CORR    -         -8.31  (seconds)                    DEFLEC18
 JW1264  HORZ ORDER      -  SECOND
 JW1264
 JW1264.The horizontal coordinates were established by classical geodetic methods
 JW1264.and adjusted by the National Geodetic Survey in April 1998.
 JW1264
 JW1264.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1264.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1264
 JW1264.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1264.GEOID18 height accuracy estimate available here.
 JW1264
 JW1264.Click photographs - Photos may exist for this station.
 JW1264
 JW1264.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1264
 JW1264. The following values were computed from the NAD 83(1995) position.
 JW1264
 JW1264;                    North         East     Units Scale Factor Converg.
 JW1264;SPC MD       -   199,033.476   217,385.497   MT  0.99999836   -1 19 53.4
 JW1264;SPC MD       -   652,995.66    713,205.58   sFT  0.99999836   -1 19 53.4
 JW1264;SPC WV N     -   104,482.466   632,583.605   MT  0.99994595   +0 14 29.1
 JW1264;SPC WV N     -   342,789.56  2,075,401.38   sFT  0.99994595   +0 14 29.1
 JW1264;UTM  17      - 4,367,347.584   661,656.450   MT  0.99992176   +1 11 37.1
 JW1264
 JW1264!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1264!SPC MD       -   0.99992393  x   0.99999836  =   0.99992229
 JW1264!SPC WV N     -   0.99992393  x   0.99994595  =   0.99986989
 JW1264!UTM  17      -   0.99992393  x   0.99992176  =   0.99984570
 JW1264
 JW1264:                Primary Azimuth Mark                     Grid Az
 JW1264:SPC MD       -  2800                                     185 00 11.4
 JW1264:SPC WV N     -  2800                                     183 25 48.9
 JW1264:UTM  17      -  2800                                     182 28 40.9
 JW1264
 JW1264_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD6165667347(NAD 83)
 JW1264
 JW1264|---------------------------------------------------------------------|
 JW1264| PID    Reference Object                     Distance      Geod. Az  |
 JW1264|                                                           dddmmss.s |
 JW1264| JW1262 2800                                APPROX. 0.6 KM 1834018.0 |
 JW1264| JW1265 BLOOMINGTON RM 1                      7.936 METERS 20716     |
 JW1264| CX3275 BLOOMINGTON RM 2                      9.187 METERS 28646     |
 JW1264|---------------------------------------------------------------------|
 JW1264
 JW1264                          SUPERSEDED SURVEY CONTROL
 JW1264
 JW1264  NAD 83(1991)-  39 26 25.88570(N)    079 07 17.33230(W) AD(       ) 2
 JW1264  NAD 83(1986)-  39 26 25.88924(N)    079 07 17.34017(W) AD(       ) 2
 JW1264  NAD 27      -  39 26 25.54236(N)    079 07 18.22156(W) AD(       ) 2
 JW1264  NGVD 29 (07/19/86)  516.8    (m)         1696.     (f) VERT ANG       
 JW1264
 JW1264.Superseded values are not recommended for survey control.
 JW1264
 JW1264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1264.See file dsdata.pdf to determine how the superseded data were derived.
 JW1264
 JW1264_MARKER: DH = HORIZONTAL CONTROL DISK
 JW1264_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1264_STAMPING: BLOOMINGTON 1975
 JW1264_MARK LOGO: NGS
 JW1264_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1264+STABILITY: SURFACE MOTION
 JW1264
 JW1264  HISTORY     - Date     Condition        Report By
 JW1264  HISTORY     - 1975     MONUMENTED       NGS
 JW1264
 JW1264                          STATION DESCRIPTION
 JW1264
 JW1264'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (JRS)
 JW1264'THE STATION IS ABOUT 8 MILES WEST OF KEYSER, WEST VIRGINIA, 5
 JW1264'MILES NORTHEAST OF KITZMILLER, MARYLAND, 4 MILES SOUTHWEST OF
 JW1264'BLOOMINGTON, MARYLAND AND ON LAND OWNED BY THE U.S. ARMY CORPS
 JW1264'OF ENGINEERS.
 JW1264'
 JW1264'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 135 AND
 JW1264'38, WHICH IS ABOUT 10 MILES EAST OF OAKLAND AND 5 MILES NORTHWEST
 JW1264'OF KITZMILLER, GO NORTHEAST ON HIGHWAY 135 FOR 5.3 MILES TO THE
 JW1264'JUNCTION WITH CHESTNUT GROVE ROAD ON THE RIGHT AND A SIGN, U.S.
 JW1264'ARMY CORPS OF ENGINEERS.  TURN RIGHT AND GO SOUTHEASTERLY ON
 JW1264'CHESTNUT GROVE ROAD FOR 1.55 MILES TO THE UNITED METHODIST
 JW1264'CHURCH ON THE RIGHT.  CONTINUE SOUTHEAST ON A PAVED AND GRAVELED
 JW1264'ROAD FOR 2.8 MILES TO WHERE THE ROAD MAKES A TURN TO THE
 JW1264'RIGHT AND A GRADED ROAD CONTINUES AHEAD INTO THE WOODS AND A
 JW1264'SIGN, U.S ARMY CORPS OF ENGINEERS CONSTRUCTION AREA.  CONTINUE
 JW1264'AHEAD ON THE GRADED ROAD AND GO SOUTHEAST AND SOUTH FOR 0.4
 JW1264'MILE TO A SWAMPY AREA ON THE RIGHT AND THE STATION ON A FILLED
 JW1264'AREA ON THE LEFT.
 JW1264'
 JW1264'STATION MARKS ARE STANDARD DISKS, STAMPED---BLOOMINGTON 1975---.  THE
 JW1264'SURFACE DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE
 JW1264'MONUMENT, THAT PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 71.0
 JW1264'FEET EAST OF THE CENTER OF A GRADED ROAD AND 4.2 FEET SOUTHEAST
 JW1264'OF A WITNESS POST.  THE UNDERGROUND DISK IS SET IN AN IRREGULAR
 JW1264'MASS OF CONCRETE 32 INCHES BELOW THE GROUND SURFACE.
 JW1264'
 JW1264'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED---BLOOMINGTON NO 1
 JW1264'1975---, SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT
 JW1264'THAT PROJECTS 7 INCHES ABOVE THE GROUND.  IT IS 80.5 FEET
 JW1264'SOUTHEAST OF THE CENTER OF THE GRADED ROAD, 29.6 FEET SOUTH OF
 JW1264'THE WITNESS POST AT THE STATION AND ABOUT 2 FEET LOWER THAN THE
 JW1264'STATION.
 JW1264'
 JW1264'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED---BLOOMINGTON NO 2
 JW1264'1975---, SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT
 JW1264'THAT IS FLUSH WITH THE GROUND.  IT IS 44.6 FEET SOUTHEAST OF THE
 JW1264'CENTER OF THE TRACK ROAD, 28.5 FEET WEST OF THE WITNESS POST AT
 JW1264'THE STATION AND ABOUT THE SAME ELEVATION AS THE STATION.
 JW1264'
 JW1264'HEIGHT OF LIGHT ABOVE STATION MARK 1.3 METERS.
 JW1264'28+00 USE 1975 WILL SERVE AS THE AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1265 ***********************************************************************
 JW1265  DESIGNATION -  BLOOMINGTON RM 1
 JW1265  PID         -  JW1265
 JW1265  STATE/COUNTY-  MD/GARRETT
 JW1265  COUNTRY     -  US
 JW1265  USGS QUAD   -  WESTERNPORT (2016)
 JW1265
 JW1265                         *CURRENT SURVEY CONTROL
 JW1265  ______________________________________________________________________
 JW1265* NAD 83(1995) POSITION- 39 26 25.65344(N) 079 07 17.48289(W)   ADJUSTED
 JW1265* NAVD 88 ORTHO HEIGHT -   516.1   (meters)     1693.    (feet) VERTCON3
 JW1265  ______________________________________________________________________
 JW1265  GEOID HEIGHT    -        -31.763 (meters)                     GEOID18
 JW1265  LAPLACE CORR    -         -8.30  (seconds)                    DEFLEC18
 JW1265  HORZ ORDER      -  SECOND
 JW1265
 JW1265.The horizontal coordinates were established by classical geodetic methods
 JW1265.and adjusted by the National Geodetic Survey in April 1998.
 JW1265
 JW1265.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1265.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1265
 JW1265.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1265.GEOID18 height accuracy estimate available here.
 JW1265
 JW1265.Click photographs - Photos may exist for this station.
 JW1265
 JW1265.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1265
 JW1265. The following values were computed from the NAD 83(1995) position.
 JW1265
 JW1265;                    North         East     Units Scale Factor Converg.
 JW1265;SPC MD       -   199,026.509   217,381.698   MT  0.99999834   -1 19 53.5
 JW1265;SPC MD       -   652,972.80    713,193.12   sFT  0.99999834   -1 19 53.5
 JW1265;SPC WV N     -   104,475.398   632,579.999   MT  0.99994596   +0 14 29.0
 JW1265;SPC WV N     -   342,766.37  2,075,389.55   sFT  0.99994596   +0 14 29.0
 JW1265;UTM  17      - 4,367,340.456   661,652.962   MT  0.99992175   +1 11 37.0
 JW1265
 JW1265!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1265!SPC MD       -   0.99992401  x   0.99999834  =   0.99992235
 JW1265!SPC WV N     -   0.99992401  x   0.99994596  =   0.99986998
 JW1265!UTM  17      -   0.99992401  x   0.99992175  =   0.99984577
 JW1265
 JW1265:                Primary Azimuth Mark                     Grid Az
 JW1265:SPC MD       -  PINNACLE ECC                             151 36 58.8
 JW1265:SPC WV N     -  PINNACLE ECC                             150 02 36.3
 JW1265:UTM  17      -  PINNACLE ECC                             149 05 28.3
 JW1265
 JW1265_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD6165267340(NAD 83)
 JW1265
 JW1265|---------------------------------------------------------------------|
 JW1265| PID    Reference Object                     Distance      Geod. Az  |
 JW1265|                                                           dddmmss.s |
 JW1265| JW1264 BLOOMINGTON                           7.936 METERS 02716     |
 JW1265| JW1260 PINNACLE ECC                        APPROX. 7.5 KM 1501705.3 |
 JW1265|---------------------------------------------------------------------|
 JW1265
 JW1265                          SUPERSEDED SURVEY CONTROL
 JW1265
 JW1265  NAD 83(1991)-  39 26 25.65698(N)    079 07 17.48435(W) AD(       ) 2
 JW1265  NAD 83(1986)-  39 26 25.66052(N)    079 07 17.49223(W) AD(       ) 2
 JW1265  NAD 27      -  39 26 25.31363(N)    079 07 18.37360(W) AD(       ) 2
 JW1265  NGVD 29 (07/19/86)  516.3    (m)         1694.     (f) VERT ANG       
 JW1265
 JW1265.Superseded values are not recommended for survey control.
 JW1265
 JW1265.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1265.See file dsdata.pdf to determine how the superseded data were derived.
 JW1265
 JW1265_MARKER: DR = REFERENCE MARK DISK
 JW1265_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1265_STAMPING: BLOOMINGTON NO 1 1975
 JW1265_MARK LOGO: NGS
 JW1265_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1265+STABILITY: SURFACE MOTION
 JW1265
 JW1265  HISTORY     - Date     Condition        Report By
 JW1265  HISTORY     - 1975     MONUMENTED       NGS
 JW1265
 JW1265                          STATION DESCRIPTION
 JW1265
 JW1265'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (JRS)
 JW1265'THE MARK IS LOCATED 8 MILES WEST OF KEYSER, WEST VIRGINIA, 5 MILES
 JW1265'NORTHEAST OF KITZMILLER, MARYLAND AND 4 MILES SOUTHWEST OF BLOOMINGTON
 JW1265'MARYLAND.
 JW1265'
 JW1265'IT IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 JW1265'PROJECTS 7 INCHES ABOVE THE GROUND.  IT IS 44.6 FT SOUTHEAST OF THE
 JW1265'CENTER OF A GRADED ROAD, 29.6 FT SOUTH OF A WITNESS POST  AND 2 FT
 JW1265'LOWER THAN STATION BLOOMINGTON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5310 ***********************************************************************
 HV5310  DESIGNATION -  BLOSSOM
 HV5310  PID         -  HV5310
 HV5310  STATE/COUNTY-  MD/CHARLES
 HV5310  COUNTRY     -  US
 HV5310  USGS QUAD   -  MATHIAS POINT (2019)
 HV5310
 HV5310                         *CURRENT SURVEY CONTROL
 HV5310  ______________________________________________________________________
 HV5310* NAD 83(1993) POSITION- 38 25 45.13780(N) 077 05 10.67469(W)   ADJUSTED
 HV5310* NAVD 88 ORTHO HEIGHT -     3.7   (meters)       12.    (feet) VERTCON3
 HV5310  ______________________________________________________________________
 HV5310  GEOID HEIGHT    -        -33.012 (meters)                     GEOID18
 HV5310  LAPLACE CORR    -         -5.28  (seconds)                    DEFLEC18
 HV5310  HORZ ORDER      -  FIRST
 HV5310
 HV5310.The horizontal coordinates were established by classical geodetic methods
 HV5310.and adjusted by the National Geodetic Survey in November 1994.
 HV5310
 HV5310.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV5310.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV5310
 HV5310.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5310.GEOID18 height accuracy estimate available here.
 HV5310
 HV5310.Click photographs - Photos may exist for this station.
 HV5310
 HV5310.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5310
 HV5310. The following values were computed from the NAD 83(1993) position.
 HV5310
 HV5310;                    North         East     Units Scale Factor Converg.
 HV5310;SPC MD       -    84,648.454   392,464.730   MT  0.99998004   -0 03 15.0
 HV5310;SPC MD       -   277,717.47  1,287,611.37   sFT  0.99998004   -0 03 15.0
 HV5310;SPC VA N     - 2,085,590.556 3,623,431.116   MT  0.99995376   +0 52 56.3
 HV5310;SPC VA N     - 6,842,475.02 11,887,873.59   sFT  0.99995376   +0 52 56.3
 HV5310;UTM  18      - 4,255,499.214   317,892.035   MT  1.00000842   -1 17 49.5
 HV5310
 HV5310!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5310!SPC MD       -   1.00000461  x   0.99998004  =   0.99998465
 HV5310!SPC VA N     -   1.00000461  x   0.99995376  =   0.99995837
 HV5310!UTM  18      -   1.00000461  x   1.00000842  =   1.00001303
 HV5310
 HV5310:                Primary Azimuth Mark                     Grid Az
 HV5310:SPC MD       -  BLOSSOM AZ MK                            000 03 11.5
 HV5310:SPC VA N     -  BLOSSOM AZ MK                            359 07 00.2
 HV5310:UTM  18      -  BLOSSOM AZ MK                            001 17 46.0
 HV5310
 HV5310_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1789255499(NAD 83)
 HV5310
 HV5310|---------------------------------------------------------------------|
 HV5310| PID    Reference Object                     Distance      Geod. Az  |
 HV5310|                                                           dddmmss.s |
 HV5310| HV5326 POINT A                             165.502 METERS 00000     |
 HV5310| HV5324 MINITRACK CONCENTRIC PT             152.193 METERS 00000     |
 HV5310| DC6688 BLOSSOM RM 1                         24.512 METERS 08902     |
 HV5310| DC6689 BLOSSOM RM 2                         27.477 METERS 14723     |
 HV5310| HV5325 BLOSSOM 2                           279.327 METERS 33157     |
 HV5310| DC6687 BLOSSOM AZ MK                                      3595956.5 |
 HV5310|---------------------------------------------------------------------|
 HV5310
 HV5310                          SUPERSEDED SURVEY CONTROL
 HV5310
 HV5310  NAD 83(1991)-  38 25 45.13898(N)    077 05 10.67935(W) AD(       ) 1
 HV5310  NAD 83(1986)-  38 25 45.13850(N)    077 05 10.68941(W) AD(       ) 1
 HV5310  NAD 27      -  38 25 44.69300(N)    077 05 11.77500(W) AD(       ) 1
 HV5310  NGVD 29 (07/19/86)    3.9    (m)           13.     (f) VERT ANG       
 HV5310
 HV5310.Superseded values are not recommended for survey control.
 HV5310
 HV5310.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5310.See file dsdata.pdf to determine how the superseded data were derived.
 HV5310
 HV5310_MARKER: DS = TRIANGULATION STATION DISK
 HV5310_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5310_STAMPING: BLOSSOM 1956
 HV5310_MARK LOGO: CGS
 HV5310_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5310+STABILITY: SURFACE MOTION
 HV5310
 HV5310  HISTORY     - Date     Condition        Report By
 HV5310  HISTORY     - 1956     MONUMENTED       CGS
 HV5310  HISTORY     - 1966     GOOD             CGS
 HV5310
 HV5310                          STATION DESCRIPTION
 HV5310
 HV5310'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (MLC)
 HV5310'STATION IS LOCATED ABOUT 10 MI. SW OF LA PLATA, ON BLOSSOM
 HV5310'POINT, AND ABOUT 500 FT. S OF THE CENTER OF THE MINITRACK
 HV5310'ARRAY.  THE MARK IS A STANDARD DISK, SET IN CONCRETE THAT
 HV5310'PROJECTS 4 IN., AND STAMPED BLOSSOM 1956.
 HV5310'
 HV5310'REFERENCE MARK 1, STAMPED BLOSSOM NO 1 1956, IS A STANDARD
 HV5310'DISK, SET IN CONCRETE THAT PROJECTS 4 IN., AND IS LOCATED ALONG
 HV5310'THE EDGE OF THE CLEARING AT THE S END OF THE INSTALLATION.
 HV5310'
 HV5310'REFERENCE MARK 2, STAMPED BLOSSOM NO 2 1956, IS A STANDARD
 HV5310'DISK, SET IN CONCRETE THAT PROJECTS 4 IN.  IT IS 27 FT. NW OF A
 HV5310'15-INCH GUM TREE, AND 19 FT. SW OF A 12-IN. PINE TREE.
 HV5310'
 HV5310'THE AZIMUTH MARK, STAMPED BLOSSOM 1956, IS A STANDARD DISK, SET
 HV5310'IN CONCRETE ABOUT 1000 FT. DUE N OF THE STATION.
 HV5310'
 HV5310'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 301
 HV5310'AND 6 IN LA PLATA, GO W ON STATE HIGHWAY 6 FOR 5.7 MI. TO A
 HV5310'FORK, TAKE THE LEFT FORK AND FOLLOW THE MAIN ROAD (PAVED) FOR
 HV5310'3.4 MI. TO A T-ROAD LEFT, CONTINUE AHEAD ON A GRAVEL ROAD FOR
 HV5310'1.3 MI. TO A T-ROAD LEFT AT A LOCKED GATE, TURN LEFT AND GO SE
 HV5310'FOR 0.15 MI. TO WHERE THE ROAD TURNS LEFT, AT THIS POINT THE
 HV5310'STATION IS STRAIGHT AHEAD ACROSS CLEARING ABOUT 0.1 MI.
 HV5310'
 HV5310'NOTE--STATION BLOSSOM IS THE SAME POINT THAT WAS OCCUPIED
 HV5310'EARLIER AND FROM WHICH AN ASTRONOMIC AZIMUTH WAS TAKEN TO
 HV5310'ESTABLISH A N-S CONSTRUCTION LINE FOR INSTALLING THE ANTENNA.
 HV5310
 HV5310                          STATION RECOVERY (1966)
 HV5310
 HV5310'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (LGB)
 HV5310'THE STATION WAS RECOVERED AND ALL MARKS WERE FOUND IN GOOD
 HV5310'CONDITION.  A COMPLETE NEW DESCRIPTION FOLLOWS.
 HV5310'
 HV5310'THE STATION IS LOCATED 9 MILES SOUTHWEST OF LA PLATA, 7 MILES
 HV5310'NORTH OF OWENS AND 2 MILES NORTHEAST OF THE SOUTH END OF BLOSSOM
 HV5310'POINT.
 HV5310'
 HV5310'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV5310'STATE HIGHWAY 6 IN LA PLATA, GO WESTERLY ON STATE HIGHWAY 6 FOR
 HV5310'5.8 MILES TO A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTHERLY ON
 HV5310'PAVED ROAD FOR 3.45 MILES TO A CROSSROAD.  CONTINUE SOUTHERLY,
 HV5310'GRAVELED ROAD FOR 1.25 MILES TO A SIDE ROAD LEFT JUST BEFORE
 HV5310'REACHING A GATE.  TURN LEFT AND GO 0.15 MILE TO FORKS.  TURN
 HV5310'LEFT AND FOLLOW PAVED ROAD FOR 0.15 MILE TO A ROAD ON THE RIGHT
 HV5310'AT A BUILDING.  TURN RIGHT AND GO 0.05 MILE TO A POINT WHERE
 HV5310'THE ROAD CURVES LEFT.  LEAVE THE ROAD AND GO SOUTH ACROSS FIELD
 HV5310'FOR 0.05 MILE TO THE STATION JUST BEFORE REACHING WOODED AREA.
 HV5310'
 HV5310'THE STATION MARK IS A STANDARD DISK, STAMPED BLOSSOM 1956, SET
 HV5310'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT THAT PROJECTS
 HV5310'4-INCHES.  IT IS 200 FEET SOUTH OF THE CENTER OF A GRAVELED
 HV5310'ROAD, 126 FEET SOUTH-SOUTHEAST OF THE SOUTHEAST CORNER OF A
 HV5310'CONCRETE SLAB AND 1.6 FEET EAST OF A METAL WITNESS SIGN POST.
 HV5310'
 HV5310'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED BLOSSOM NO 1 1956,
 HV5310'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT THAT
 HV5310'PROJECTS 2-INCHES.  IT IS 17 FEET EAST-NORTHEAST OF A 12-INCH
 HV5310'PINE TREE AND 1.5 FEET WEST OF A METAL WITNESS SIGN POST.
 HV5310'
 HV5310'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED BLOSSOM NO 2 1966,
 HV5310'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT THAT
 HV5310'PROJECTS 3-INCHES.  IT IS 78 FEET SOUTH OF A CLEARED AREA, 29
 HV5310'FEET NORTHWEST OF A 14-INCH OAK TREE AND 1.5 FEET NORTH OF A
 HV5310'METAL WITNESS SIGN POST.
 HV5310'
 HV5310'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED BLOSSOM 1956, SET
 HV5310'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT THAT IS
 HV5310'2-INCHES BELOW THE GROUND SURFACE.  IT IS 65 FEET EAST OF THE
 HV5310'SOUTHEAST CORNER OF A WOODED AREA, 62.2 FEET NORTH OF THE
 HV5310'NORTHWEST CORNER OF A TRANSFORMER SAFETY FENCE AND 2.0 FEET WEST
 HV5310'OF THE NORTHWEST CORNER OF A LARGE CONCRETE SLAB.
 HV5310'
 HV5310'TO REACH THE AZIMUTH MARK FROM THE STATION GO NORTH ACROSS
 HV5310'FIELD FOR 0.2 MILE TO THE MARK AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5325 ***********************************************************************
 HV5325  DESIGNATION -  BLOSSOM 2
 HV5325  PID         -  HV5325
 HV5325  STATE/COUNTY-  MD/CHARLES
 HV5325  COUNTRY     -  US
 HV5325  USGS QUAD   -  MATHIAS POINT (2019)
 HV5325
 HV5325                         *CURRENT SURVEY CONTROL
 HV5325  ______________________________________________________________________
 HV5325* NAD 83(1993) POSITION- 38 25 53.13225(N) 077 05 16.09105(W)   ADJUSTED
 HV5325* NAVD 88 ORTHO HEIGHT -     5.8   (meters)       19.    (feet) VERTCON3
 HV5325  ______________________________________________________________________
 HV5325  GEOID HEIGHT    -        -33.003 (meters)                     GEOID18
 HV5325  LAPLACE CORR    -         -5.22  (seconds)                    DEFLEC18
 HV5325  HORZ ORDER      -  FIRST
 HV5325
 HV5325.The horizontal coordinates were established by classical geodetic methods
 HV5325.and adjusted by the National Geodetic Survey in November 1994.
 HV5325
 HV5325.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV5325.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV5325
 HV5325.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5325.GEOID18 height accuracy estimate available here.
 HV5325
 HV5325.Click photographs - Photos may exist for this station.
 HV5325
 HV5325.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5325
 HV5325. The following values were computed from the NAD 83(1993) position.
 HV5325
 HV5325;                    North         East     Units Scale Factor Converg.
 HV5325;SPC MD       -    84,895.080   392,333.596   MT  0.99997974   -0 03 18.4
 HV5325;SPC MD       -   278,526.61  1,287,181.14   sFT  0.99997974   -0 03 18.4
 HV5325;UTM  18      - 4,255,748.633   317,766.278   MT  1.00000899   -1 17 53.1
 HV5325
 HV5325!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5325!SPC MD       -   1.00000427  x   0.99997974  =   0.99998401
 HV5325!UTM  18      -   1.00000427  x   1.00000899  =   1.00001326
 HV5325
 HV5325:                Primary Azimuth Mark                     Grid Az
 HV5325:SPC MD       -  DONCASTER                                305 07 23.7
 HV5325:UTM  18      -  DONCASTER                                306 21 58.4
 HV5325
 HV5325_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1776655748(NAD 83)
 HV5325
 HV5325|---------------------------------------------------------------------|
 HV5325| PID    Reference Object                     Distance      Geod. Az  |
 HV5325|                                                           dddmmss.s |
 HV5325| DC6690 BLOSSOM 2 RM 3                       22.667 METERS 01718     |
 HV5325| HV5310 BLOSSOM                             279.327 METERS 15157     |
 HV5325| DC6691 BLOSSOM 2 RM 4                       22.177 METERS 25830     |
 HV5325| HV5407 DONCASTER                           APPROX.13.0 KM 3050405.3 |
 HV5325|---------------------------------------------------------------------|
 HV5325
 HV5325                          SUPERSEDED SURVEY CONTROL
 HV5325
 HV5325  NAD 83(1991)-  38 25 53.13346(N)    077 05 16.09582(W) AD(       ) 1
 HV5325  NAD 83(1986)-  38 25 53.13233(N)    077 05 16.10537(W) AD(       ) 1
 HV5325  NAD 27      -  38 25 52.68745(N)    077 05 17.19117(W) AD(       ) 1
 HV5325  NGVD 29 (07/19/86)    6.0    (m)           20.     (f) VERT ANG       
 HV5325
 HV5325.Superseded values are not recommended for survey control.
 HV5325
 HV5325.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5325.See file dsdata.pdf to determine how the superseded data were derived.
 HV5325
 HV5325_MARKER: DS = TRIANGULATION STATION DISK
 HV5325_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5325_STAMPING: BLOSSOM 2 1966
 HV5325_MARK LOGO: CGS
 HV5325_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5325+STABILITY: SURFACE MOTION
 HV5325_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV5325+SATELLITE: SATELLITE OBSERVATIONS - 1986
 HV5325
 HV5325  HISTORY     - Date     Condition        Report By
 HV5325  HISTORY     - 1966     MONUMENTED       CGS
 HV5325  HISTORY     - 1986     GOOD
 HV5325
 HV5325                          STATION DESCRIPTION
 HV5325
 HV5325'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 HV5325'THE STATION IS LOCATED 9 MILES SOUTHWEST OF LA PLATA, 7 MILES
 HV5325'NORTH OF OWENS AND 2 MILES NORTHEAST OF THE SOUTH END OF BLOSSOM
 HV5325'POINT.
 HV5325'
 HV5325'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV5325'STATE HIGHWAY 6 IN LA PLATA, GO WESTERLY ON STATE HIGHWAY 6 FOR
 HV5325'5.8 MILES TO A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTHERLY ON
 HV5325'PAVED ROAD FOR 3.45 MILES TO A CROSSROAD.  CONTINUE AHEAD
 HV5325'SOUTHERLY, GRAVELED ROAD FOR 1.25 MILES TO A SIDE ROAD LEFT JUST
 HV5325'BEFORE REACHING A GATE.  TURN LEFT AND GO 0.15 MILE TO
 HV5325'FORKS.  TURN LEFT AND GO 0.1 MILE TO A POINT WHERE THE MAIN
 HV5325'ROAD CURVES RIGHT.  LEAVE THE ROAD AND GO ACROSS FIELD FOR 0.05
 HV5325'MILE TO THE STATION.
 HV5325'
 HV5325'THE STATION MARK IS A STANDARD DISK, STAMPED BLOSSOM 2 1966, SET
 HV5325'IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT THAT IS FLUSH
 HV5325'WITH THE SURFACE OF THE GROUND.  IT IS 110.5 FEET NORTH OF A
 HV5325'ANTENNA, 75.2 FEET SOUTH-SOUTHWEST OF A METAL WITNESS SIGN POST
 HV5325'AND 74 FEET EAST OF A METAL WITNESS SIGN POST.
 HV5325'
 HV5325'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED BLOSSOM 2 NO 3 1966,
 HV5325'SET IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT THAT PROJECTS
 HV5325'2-INCHES.  IT IS 174.2 FEET NORTH OF THE ANTENNA AND 1.0 FOOT
 HV5325'SOUTH OF A METAL WITNESS SIGN POST.
 HV5325'
 HV5325'REFERENCE MARK 4 IS A STANDARD DISK, STAMPED BLOSSOM 2 NO 4 1966,
 HV5325'SET IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT THAT PROJECTS
 HV5325'1-INCH.  IT IS 143 FEET NORTHWEST OF THE ANTENNA, 8.5 FEET
 HV5325'EAST-NORTHEAST OF A 12-INCH OAK TREE AND 1.3 FEET SOUTHEAST OF A
 HV5325'METAL WITNESS SIGN POST.
 HV5325'
 HV5325'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED BLOSSOM 1956, SET
 HV5325'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT THAT IS 2-INCHES
 HV5325'BELOW THE GROUND SURFACE.  IT IS 65 FEET EAST OF THE SOUTHEAST
 HV5325'CORNER OF A WOODED AREA, 62.2 FEET NORTH OF THE NORTHWEST CORNER
 HV5325'OF A TRANSFORMER SAFETY FENCE AND 2.0 FEET WEST OF THE NORTHWEST
 HV5325'CORNER OF A LARGE CONCRETE SLAB.
 HV5325'
 HV5325'TO REACH THE AZIMUTH MARK FROM THE STATION GO EAST ACROSS FIELD
 HV5325'FOR 0.1 MILE TO A LARGE CONCRETE SLAB AND THE MARK.
 HV5325
 HV5325                          STATION RECOVERY (1986)
 HV5325
 HV5325'RECOVERED 1986
 HV5325'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5313 ***********************************************************************
 HV5313  DESIGNATION -  BLOSSOM POINT RADIO TOWER
 HV5313  PID         -  HV5313
 HV5313  STATE/COUNTY-  MD/CHARLES
 HV5313  COUNTRY     -  US
 HV5313  USGS QUAD   -  MATHIAS POINT (2019)
 HV5313
 HV5313                         *CURRENT SURVEY CONTROL
 HV5313  ______________________________________________________________________
 HV5313* NAD 83(1993) POSITION- 38 24 28.74849(N) 077 06 30.64867(W)   ADJUSTED
 HV5313  ______________________________________________________________________
 HV5313  GEOID HEIGHT    -        -32.998 (meters)                     GEOID18
 HV5313  LAPLACE CORR    -         -5.21  (seconds)                    DEFLEC18
 HV5313  HORZ ORDER      -  THIRD
 HV5313
 HV5313.The horizontal coordinates were established by classical geodetic methods
 HV5313.and adjusted by the National Geodetic Survey in November 1994.
 HV5313
 HV5313.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5313.GEOID18 height accuracy estimate available here.
 HV5313
 HV5313.Click photographs - Photos may exist for this station.
 HV5313
 HV5313.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5313
 HV5313. The following values were computed from the NAD 83(1993) position.
 HV5313
 HV5313;                    North         East     Units Scale Factor Converg.
 HV5313;SPC MD       -    82,295.138   390,522.199   MT  0.99998297   -0 04 05.2
 HV5313;SPC MD       -   269,996.63  1,281,238.25   sFT  0.99998297   -0 04 05.2
 HV5313;SPC VA N     - 2,083,205.869 3,621,527.361   MT  0.99995503   +0 52 06.4
 HV5313;SPC VA N     - 6,834,651.26 11,881,627.68   sFT  0.99995503   +0 52 06.4
 HV5313;UTM  18      - 4,253,188.502   315,898.867   MT  1.00001741   -1 18 37.1
 HV5313
 HV5313_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1589853188(NAD 83)
 HV5313
 HV5313                          SUPERSEDED SURVEY CONTROL
 HV5313
 HV5313  NAD 83(1991)-  38 24 28.75023(N)    077 06 30.65234(W) AD(       ) 3
 HV5313  NAD 83(1986)-  38 24 28.75064(N)    077 06 30.66329(W) AD(       ) 3
 HV5313  NAD 27      -  38 24 28.30700(N)    077 06 31.75500(W) AD(       ) 3
 HV5313
 HV5313.Superseded values are not recommended for survey control.
 HV5313
 HV5313.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5313.See file dsdata.pdf to determine how the superseded data were derived.
 HV5313
 HV5313_MARKER: 43 = RADIO/TV TOWER
 HV5313
 HV5313  HISTORY     - Date     Condition        Report By
 HV5313  HISTORY     - 1959     FIRST OBSERVED   CGS
 HV5313
 HV5313                          STATION DESCRIPTION
 HV5313
 HV5313'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV5313'STATION IS LOCATED ATOP AN OBSERVATION TOWER AT THE U.S. ARMY
 HV5313'FIRING RANGE AT BLOSSOM POINT ON THE EASTERN SHORE OF THE POTOMAC
 HV5313'RIVER.  THE HEIGHT OF THE OBSERVATION AND RADIO TOWERS IS
 HV5313'APPROXIMATELY 100 FEET.  THE RADIO TOWER IS LOCATED IN THE
 HV5313'SOUTHEAST CORNER OF THE OBSERVATION PLATFORM.  THE CENTER OF THE
 HV5313'TOP OF THE RADIO TOWER WAS THE POINT INTERSECTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5161 ***********************************************************************
 JV5161  DESIGNATION -  BLUE
 JV5161  PID         -  JV5161
 JV5161  STATE/COUNTY-  MD/QUEEN ANNES
 JV5161  COUNTRY     -  US
 JV5161  USGS QUAD   -  LOVE POINT (2017)
 JV5161
 JV5161                         *CURRENT SURVEY CONTROL
 JV5161  ______________________________________________________________________
 JV5161* NAD 83(1991) POSITION- 39 01 06.24333(N) 076 17 50.46516(W)   ADJUSTED
 JV5161* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5161  ______________________________________________________________________
 JV5161  GEOID HEIGHT    -        -33.528 (meters)                     GEOID18
 JV5161  LAPLACE CORR    -         -2.22  (seconds)                    DEFLEC18
 JV5161  HORZ ORDER      -  SECOND
 JV5161
 JV5161.The horizontal coordinates were established by classical geodetic methods
 JV5161.and adjusted by the National Geodetic Survey in January 1992.
 JV5161
 JV5161.The orthometric height was scaled from a topographic map.
 JV5161
 JV5161.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5161.GEOID18 height accuracy estimate available here.
 JV5161
 JV5161.Click photographs - Photos may exist for this station.
 JV5161
 JV5161.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5161
 JV5161. The following values were computed from the NAD 83(1991) position.
 JV5161
 JV5161;                    North         East     Units Scale Factor Converg.
 JV5161;SPC MD       -   150,283.080   460,848.685   MT  0.99995293   +0 26 27.6
 JV5161;SPC MD       -   493,053.74  1,511,967.73   sFT  0.99995293   +0 26 27.6
 JV5161;UTM  18      - 4,319,619.164   387,687.156   MT  0.99975532   -0 49 00.7
 JV5161
 JV5161!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5161!SPC MD       -   1.00000530  x   0.99995293  =   0.99995823
 JV5161!UTM  18      -   1.00000530  x   0.99975532  =   0.99976062
 JV5161
 JV5161:                Primary Azimuth Mark                     Grid Az
 JV5161:SPC MD       -  HUNTINGFIELD BANK TWR 15                 024 05 53.3
 JV5161:UTM  18      -  HUNTINGFIELD BANK TWR 15                 025 21 21.6
 JV5161
 JV5161_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8768719619(NAD 83)
 JV5161
 JV5161|---------------------------------------------------------------------|
 JV5161| PID    Reference Object                     Distance      Geod. Az  |
 JV5161|                                                           dddmmss.s |
 JV5161| JV0345 HUNTINGFIELD BANK TWR 15            APPROX.11.2 KM 0243220.9 |
 JV5161| HV6154 SIG                                 APPROX. 5.7 KM 1433837.8 |
 JV5161| HV6197 END                                 APPROX. 2.9 KM 1593514.9 |
 JV5161| CA9979 BLUE RM 2                            50.876 METERS 26608     |
 JV5161| CA9978 BLUE RM 1                            25.098 METERS 26624     |
 JV5161| JV5165 LOVE PT FERRY WHSE EAST GABLE       APPROX. 1.5 KM 3513906.4 |
 JV5161|---------------------------------------------------------------------|
 JV5161
 JV5161                          SUPERSEDED SURVEY CONTROL
 JV5161
 JV5161  NAD 83(1986)-  39 01 06.23870(N)    076 17 50.47654(W) AD(       ) 2
 JV5161  NAD 27      -  39 01 05.83800(N)    076 17 51.63500(W) AD(       ) 2
 JV5161
 JV5161.Superseded values are not recommended for survey control.
 JV5161
 JV5161.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5161.See file dsdata.pdf to determine how the superseded data were derived.
 JV5161
 JV5161_MARKER: DS = TRIANGULATION STATION DISK
 JV5161_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5161_STAMPING: BLUE 1932
 JV5161_MARK LOGO: CGS
 JV5161_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5161+STABILITY: SURFACE MOTION
 JV5161
 JV5161  HISTORY     - Date     Condition        Report By
 JV5161  HISTORY     - 1932     MONUMENTED       CGS
 JV5161  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5161
 JV5161                          STATION DESCRIPTION
 JV5161
 JV5161'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (JAB)
 JV5161'STATION IS ON THE NE SIDE OF KENT ISLAND ON THE WESTERN SHORE OF
 JV5161'CHESTER RIVER IN THE N EDGE OF A CULTIVATED FIELD ON PROPERTY
 JV5161'OWNED BY DR. COOK ABOUT 1 MILE SSE OF LOVE POINT FERRY LANDING.
 JV5161'HIGH-WATER LINE IS 61 METERS E OF STATION ALONG THE WIRE FENCE
 JV5161'ROW IN THE DIRECTION OF SIGNAL GOLF ON WICKES BEACH.  CREST OF A
 JV5161'12-FOOT CLAY RIVER BLUFF IS 41.5 METERS SE ON RANGE WITH THE
 JV5161'DRAWBRIDGE AT KENT ISLAND NARROWS.  A 6-INCH WILD-CHERRY TREE, 4
 JV5161'FEET ABOVE HIGH WATER AT THE EDGE OF THE BLUFF, IS 37 METERS E OF
 JV5161'THE STATION AND ALMOST ON RANGE WITH STATION GOLF.  A 10-INCH OAK
 JV5161'ON THE EDGE OF THE S BANK OF A LAGOON IS 24.2 METERS N OF THE
 JV5161'STATION AND SHOWS HALFWAY BETWEEN LOVE POINT LIGHTHOUSE AND LOVE
 JV5161'POINT FERRY LANDING.
 JV5161'
 JV5161'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5161'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.  UNDERGROUND MARK IS A
 JV5161'BLOCK OF CONCRETE BELOW THE GROUND CONTAINING AN IRON NAIL, AS
 JV5161'DESCRIBED IN NOTE 7C.
 JV5161'
 JV5161'HEIGHT OF SIGNAL ABOVE STATION MARK - 6 METERS.
 JV5161
 JV5161                          STATION RECOVERY (1961)
 JV5161
 JV5161'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5161'STATION EVIDENTLY DESTROYED BY EROSION AS IT NOW PLOTS IN THE
 JV5161'WATER.  A SEARCH OF THE AREA FAILED TO LOCATE ANY OF THE REFERENCE
 JV5161'TREES OR EITHER OF THE REFERENCE MARKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6202 ***********************************************************************
 DN6202  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6202  DESIGNATION -  BLUEBALL
 DN6202  PID         -  DN6202
 DN6202  STATE/COUNTY-  MD/CECIL
 DN6202  COUNTRY     -  US
 DN6202  USGS QUAD   -  BAY VIEW (2016)
 DN6202
 DN6202                         *CURRENT SURVEY CONTROL
 DN6202  ______________________________________________________________________
 DN6202* NAD 83(2011) POSITION- 39 41 32.04588(N) 075 55 37.06913(W)   ADJUSTED
 DN6202* NAD 83(2011) ELLIP HT-    71.620 (meters)        (06/27/12)   ADJUSTED
 DN6202* NAD 83(2011) EPOCH   -  2010.00
 DN6202* NAVD 88 ORTHO HEIGHT -   104.65  (meters)      343.3   (feet) GPS OBS
 DN6202  ______________________________________________________________________
 DN6202  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6202  GEOID HEIGHT    -        -33.007 (meters)                     GEOID03
 DN6202  GEOID HEIGHT    -        -33.028 (meters)                     GEOID18
 DN6202  NAD 83(2011) X  -  1,195,041.016 (meters)                     COMP
 DN6202  NAD 83(2011) Y  - -4,767,151.621 (meters)                     COMP
 DN6202  NAD 83(2011) Z  -  4,051,795.430 (meters)                     COMP
 DN6202  LAPLACE CORR    -         -0.28  (seconds)                    DEFLEC18
 DN6202
 DN6202  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6202  Standards:
 DN6202         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6202            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6202  -------------------------------------------------------------------
 DN6202  NETWORK    0.52   1.02           0.24   0.17   0.52      0.03177709
 DN6202  -------------------------------------------------------------------
 DN6202  Click here for local accuracies and other accuracy information.
 DN6202
 DN6202.The horizontal coordinates were established by GPS observations
 DN6202.and adjusted by the National Geodetic Survey in June 2012.
 DN6202
 DN6202.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6202.been affixed to the stable North American tectonic plate. See 
 DN6202.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6202
 DN6202.The horizontal coordinates are valid at the epoch date displayed above
 DN6202.which is a decimal equivalence of Year/Month/Day.
 DN6202
 DN6202.The orthometric height was determined by GPS observations and a
 DN6202.high-resolution geoid model using precise GPS observation and
 DN6202.processing techniques.
 DN6202
 DN6202.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6202.GEOID18 height accuracy estimate available here.
 DN6202
 DN6202.Click photographs - Photos may exist for this station.
 DN6202
 DN6202.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6202
 DN6202.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6202
 DN6202.The ellipsoidal height was determined by GPS observations
 DN6202.and is referenced to NAD 83.
 DN6202
 DN6202. The following values were computed from the NAD 83(2011) position.
 DN6202
 DN6202;                    North         East     Units Scale Factor Converg.
 DN6202;SPC MD       -   225,399.746   492,043.365   MT  1.00005136   +0 40 24.5
 DN6202;SPC MD       -   739,499.00  1,614,312.27   sFT  1.00005136   +0 40 24.5
 DN6202;UTM  18      - 4,394,009.859   420,519.931   MT  0.99967777   -0 35 31.4
 DN6202
 DN6202!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6202!SPC MD       -   0.99998876  x   1.00005136  =   1.00004012
 DN6202!UTM  18      -   0.99998876  x   0.99967777  =   0.99966654
 DN6202
 DN6202_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2051994009(NAD 83)
 DN6202
 DN6202                          SUPERSEDED SURVEY CONTROL
 DN6202
 DN6202  NAD 83(2007)-  39 41 32.04612(N)    075 55 37.06988(W) AD(2002.00) 1
 DN6202  ELLIP H (02/23/12)   71.644  (m)                       GP(2002.00) 4 1
 DN6202
 DN6202.Superseded values are not recommended for survey control.
 DN6202
 DN6202.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6202.See file dsdata.pdf to determine how the superseded data were derived.
 DN6202
 DN6202_MARKER: DD = SURVEY DISK
 DN6202_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6202_STAMPING: BLUE BALL 2008
 DN6202_MARK LOGO: MD-015
 DN6202_PROJECTION: FLUSH
 DN6202_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6202_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6202+STABILITY: SURFACE MOTION
 DN6202_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6202+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6202
 DN6202  HISTORY     - Date     Condition        Report By
 DN6202  HISTORY     - 20081204 MONUMENTED       GWS
 DN6202
 DN6202                          STATION DESCRIPTION
 DN6202
 DN6202'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6202'THE STATION IS LOCATED 4.3 MI (6.9 KM) NORTHEASTERLY OF THE TOWN OF
 DN6202'NORTH EAST.
 DN6202'
 DN6202'TO REACH THE STATION FROM THE JUNCTION OF TELEGRAPH ROAD (ROUTE 273)
 DN6202'AND BLUE BALL ROAD (ROUTE 545), PROCEED SOUTH ON BLUE BALL ROAD FOR
 DN6202'0.63 MI (1.0 KM) TO THE STATION ON THE RIGHT.
 DN6202'
 DN6202'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6202'CONCRETE MONUMENT ON THE WEST SIDE OF BLUE BALL ROAD, 9.3 FT (2.8 M)
 DN6202'WEST OF THE EDGE OF PAVING, 55.3 FT (16.9 M) SOUTHWEST OF C AND P POLE
 DN6202'NUMBER 219 ON THE EAST SIDE OF THE ROAD AND 69 FT (21.0 M) FROM THE
 DN6202'MAILBOX AT 3225 BLUE BALL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5820 ***********************************************************************
 HV5820  DESIGNATION -  BLUEBEARD
 HV5820  PID         -  HV5820
 HV5820  STATE/COUNTY-  MD/QUEEN ANNES
 HV5820  COUNTRY     -  US
 HV5820  USGS QUAD   -  QUEENSTOWN (2016)
 HV5820
 HV5820                         *CURRENT SURVEY CONTROL
 HV5820  ______________________________________________________________________
 HV5820* NAD 83(1991) POSITION- 38 59 12.79652(N) 076 11 00.82760(W)   ADJUSTED
 HV5820* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5820  ______________________________________________________________________
 HV5820  GEOID HEIGHT    -        -33.799 (meters)                     GEOID18
 HV5820  LAPLACE CORR    -         -3.81  (seconds)                    DEFLEC18
 HV5820  HORZ ORDER      -  THIRD
 HV5820
 HV5820.The horizontal coordinates were established by classical geodetic methods
 HV5820.and adjusted by the National Geodetic Survey in January 1992.
 HV5820
 HV5820.The orthometric height was scaled from a topographic map.
 HV5820
 HV5820.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5820.GEOID18 height accuracy estimate available here.
 HV5820
 HV5820.Click photographs - Photos may exist for this station.
 HV5820
 HV5820.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5820
 HV5820. The following values were computed from the NAD 83(1991) position.
 HV5820
 HV5820;                    North         East     Units Scale Factor Converg.
 HV5820;SPC MD       -   146,866.941   470,733.676   MT  0.99995172   +0 30 44.7
 HV5820;SPC MD       -   481,845.96  1,544,398.74   sFT  0.99995172   +0 30 44.7
 HV5820;UTM  18      - 4,315,987.681   397,492.736   MT  0.99972939   -0 44 40.9
 HV5820
 HV5820!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5820!SPC MD       -   1.00000518  x   0.99995172  =   0.99995690
 HV5820!UTM  18      -   1.00000518  x   0.99972939  =   0.99973457
 HV5820
 HV5820:                Primary Azimuth Mark                     Grid Az
 HV5820:SPC MD       -  RAIN                                     338 13 05.5
 HV5820:UTM  18      -  RAIN                                     339 28 31.1
 HV5820
 HV5820_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9749215987(NAD 83)
 HV5820
 HV5820|---------------------------------------------------------------------|
 HV5820| PID    Reference Object                     Distance      Geod. Az  |
 HV5820|                                                           dddmmss.s |
 HV5820| JV5048 RAIN                                APPROX. 3.0 KM 3384350.2 |
 HV5820|---------------------------------------------------------------------|
 HV5820
 HV5820                          SUPERSEDED SURVEY CONTROL
 HV5820
 HV5820  NAD 83(1986)-  38 59 12.79154(N)    076 11 00.84015(W) AD(       ) 3
 HV5820  NAD 27      -  38 59 12.38500(N)    076 11 01.97000(W) AD(       ) 3
 HV5820  USSD        -  38 59 12.73900(N)    076 11 01.81200(W) AD(       ) 3
 HV5820
 HV5820.Superseded values are not recommended for survey control.
 HV5820
 HV5820.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5820.See file dsdata.pdf to determine how the superseded data were derived.
 HV5820
 HV5820_MARKER: Z = SEE DESCRIPTION
 HV5820_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5820_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5820+STABILITY: SURFACE MOTION
 HV5820
 HV5820  HISTORY     - Date     Condition        Report By
 HV5820  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5820  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV5820  HISTORY     - 1938     MARK NOT FOUND   CGS
 HV5820
 HV5820                          STATION DESCRIPTION
 HV5820
 HV5820'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5820'STATION IS ON THE EASTERN SHORE OF CHESTER RIVER ON POINT AT
 HV5820'ENTRANCE TO SMALL CREEK, ABOUT 5/8 MILE NE OF BLUNT CREEK AND 1
 HV5820'MILE SW OF ENTRANCE TO QUEENSTOWN CREEK, ON A LOW SAND BEACH,
 HV5820'ABOUT 1 FOOT ABOVE HIGH WATER, 5 YARDS INSHORE, 2 YARDS E OF A
 HV5820'SMALL PERSIMMON TREE, 55 YARDS NE OF A SMALL STREAM, AND 200 YARDS
 HV5820'NNE OF A POND.
 HV5820'
 HV5820'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5820'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5820'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5820'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 HV5820'MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP
 HV5820'2 INCHES BELOW THE BASE OF THE MONUMENT.
 HV5820'
 HV5820'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV5820'FOLLOWS--NAIL IN BLAZE IN 6-INCH OAK TREE, 125 YARDS, S 42 DEG 11
 HV5820'MIN W.  CUPOLA ON BARN, 1-1/2 MILES, S 50 DEG 57 MIN W.  E
 HV5820'CHIMNEY OF HOUSE, 1-1/2 MILES, S 51 DEG 31 MIN W.  N GABLE OF
 HV5820'JACKSON CREEK LANDING HOUSE, 2-3/8 MILES, S 62 DEG 18 MIN W.  S
 HV5820'GABLE OF HOUSE, 2 7/8 MILES, N 35 DEG 50 MIN W.  E CHIMNEY OF
 HV5820'HOUSE, 2-3/8 MILES, N 22 DEG 30 MIN E.  BLACK BEACON AT ENTRANCE
 HV5820'TO QUEENSTOWN CREEK, 1 MILE, N 42 DEG 31 MIN E.  NAIL IN BLAZE IN
 HV5820'4-INCH SWAMP OAK, 10.60 METERS (34.8 FEET), N 74 DEG 8 MIN E.
 HV5820'NAIL IN BLAZE IN 18-INCH CHESTNUT TREE, 150 YARDS, S 30 DEG 19 MIN E.
 HV5820
 HV5820                          STATION RECOVERY (1932)
 HV5820
 HV5820'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (JAB)
 HV5820'STATION COULD NOT BE FOUND.
 HV5820'
 HV5820'FOUND SMALL STREAM AND POND AS DESCRIBED, ALSO A SMALL 10-INCH
 HV5820'PERSIMMON TREE ON THE POINT.  FOUND AN OLD BLAZE IN AN OAK,
 HV5820'DISTANCE ABOUT 125 YARDS, S 42 DEG 11 MIN W.  FOUND AN OLD OAK
 HV5820'TREE ON GROUND ABOUT 10 METERS E.  BURNED HEAVY MARSH GRASS AND
 HV5820'BUSHES ON ENTIRE POINT.  DUG A HOLE 4 YARDS SQUARE AND 3-1/2 FEET
 HV5820'DEEP, 2 YARDS E OF PERSIMMON TREE.
 HV5820'
 HV5820'SPENT ONE DAY IN UNSUCCESSFUL SEARCH.
 HV5820
 HV5820                          STATION RECOVERY (1938)
 HV5820
 HV5820'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV5820'STATION LOST DUE TO EROSION OF RIVER BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6385 ***********************************************************************
 HV6385  DESIGNATION -  BLUFF
 HV6385  PID         -  HV6385
 HV6385  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6385  COUNTRY     -  US
 HV6385  USGS QUAD   -  ANNAPOLIS (2016)
 HV6385
 HV6385                         *CURRENT SURVEY CONTROL
 HV6385  ______________________________________________________________________
 HV6385* NAD 83(1991) POSITION- 38 59 11.63079(N) 076 28 27.54737(W)   ADJUSTED
 HV6385* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6385  ______________________________________________________________________
 HV6385  GEOID HEIGHT    -        -33.362 (meters)                     GEOID18
 HV6385  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 HV6385  HORZ ORDER      -  THIRD
 HV6385
 HV6385.The horizontal coordinates were established by classical geodetic methods
 HV6385.and adjusted by the National Geodetic Survey in January 1992.
 HV6385
 HV6385.The orthometric height was scaled from a topographic map.
 HV6385
 HV6385.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6385.GEOID18 height accuracy estimate available here.
 HV6385
 HV6385.Click photographs - Photos may exist for this station.
 HV6385
 HV6385.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6385
 HV6385. The following values were computed from the NAD 83(1991) position.
 HV6385
 HV6385;                    North         East     Units Scale Factor Converg.
 HV6385;SPC MD       -   146,645.822   445,544.039   MT  0.99995171   +0 19 47.8
 HV6385;SPC MD       -   481,120.50  1,461,755.73   sFT  0.99995171   +0 19 47.8
 HV6385;UTM  18      - 4,316,319.298   372,309.047   MT  0.99980077   -0 55 39.6
 HV6385
 HV6385!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6385!SPC MD       -   1.00000527  x   0.99995171  =   0.99995698
 HV6385!UTM  18      -   1.00000527  x   0.99980077  =   0.99980604
 HV6385
 HV6385:                Primary Azimuth Mark                     Grid Az
 HV6385:SPC MD       -  FORT RESET                               113 33 37.1
 HV6385:UTM  18      -  FORT RESET                               114 49 04.5
 HV6385
 HV6385_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7230916319(NAD 83)
 HV6385
 HV6385|---------------------------------------------------------------------|
 HV6385| PID    Reference Object                     Distance      Geod. Az  |
 HV6385|                                                           dddmmss.s |
 HV6385| HV6400 BLUFF RM                             11.846 METERS 04659     |
 HV6385| CX2104 BLAZE ON TREE                        26.560 METERS 08341     |
 HV6385| HV6348 FORT RESET                          APPROX. 1.1 KM 1135324.9 |
 HV6385| HV6387 ANNAPOLIS SEAWALL EAST CORNER       APPROX. 0.7 KM 2143743.3 |
 HV6385| HV6376 ANNAPOLIS ARMORY SE CORNER          APPROX. 1.1 KM 2262205.8 |
 HV6385| HV6370 ANNAPOLIS GYMNASIUM NE CORNER       APPROX. 0.7 KM 2294647.2 |
 HV6385| HV6393 ANNAPOLIS ST CAPITOL BLDG DOME      APPROX. 1.7 KM 2385356.7 |
 HV6385| HV6395 ANNAPOLIS NAVAL ACAD CHAPEL         APPROX. 1.2 KM 2420117.1 |
 HV6385| HV6381 ANNAPOLIS POWERHOUSE STACK          APPROX. 1.0 KM 2605540.1 |
 HV6385| HV6373 ANNAPOLIS NAVAL HOSP CUPOLA         APPROX. 1.5 KM 2800004.4 |
 HV6385|---------------------------------------------------------------------|
 HV6385
 HV6385                          SUPERSEDED SURVEY CONTROL
 HV6385
 HV6385  NAD 83(1986)-  38 59 11.62694(N)    076 28 27.55872(W) AD(       ) 3
 HV6385  NAD 27      -  38 59 11.22400(N)    076 28 28.70000(W) AD(       ) 3
 HV6385  USSD        -  38 59 11.58900(N)    076 28 28.54000(W) AD(       ) 3
 HV6385
 HV6385.Superseded values are not recommended for survey control.
 HV6385
 HV6385.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6385.See file dsdata.pdf to determine how the superseded data were derived.
 HV6385
 HV6385
 HV6385  HISTORY     - Date     Condition        Report By
 HV6385  HISTORY     - 1903     MONUMENTED       MDSFC
 HV6385  HISTORY     - 1910     GOOD             CGS
 HV6385  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6385
 HV6385                          STATION DESCRIPTION
 HV6385
 HV6385'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV6385'ON THE E SIDE OF SEVERN RIVER, ON A HIGH BLUFF, OPPOSITE THE
 HV6385'SANTEE WHARF OF THE NAVAL ACADEMY, 6 FEET BACK FROM EDGE OF A
 HV6385'BANK 25 FEET HIGH.  IT IS ABOUT 30 METERS UP RIVER FROM THE HIGHEST
 HV6385'POINT OF THE BLUFF.  STATION MARKED BY A 4-INCH TILE PIPE SET WITH
 HV6385'ITS TOP ABOUT 6 INCHES BELOW THE SURFACE OF THE GROUND, INSIDE OF
 HV6385'WHICH AND PROJECTING 3 INCHES ABOVE THE SURFACE IS A PINE STUB
 HV6385'WITH NAIL IN TOP.  REFERENCE MARK IS MARKED BY A HOLE IN THE
 HV6385'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6385'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH
 HV6385'TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6385'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 11.84 METERS
 HV6385'(38.8 FEET) FROM STATION N 46 DEG 56 MIN E.  DISTANCES
 HV6385'AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV6385'REFERENCE ARE AS FOLLOWS--STATEHOUSE DOME, 3/4 MILE, S 58 DEG 54
 HV6385'MIN W.  CHAPEL DOME, NAVAL ACADEMY, 3/4 MILE, S 62 DEG 01 MIN W.
 HV6385'ST. JOHNS COLLEGE, 3/4 MILE, S 69 DEG 25 MIN W.  W CHIMNEY OF
 HV6385'YELLOW HOUSE, 1/4 MILE, N 28 DEG 47 MIN W.  NAIL IN BLAZE IN
 HV6385'18-INCH LOCUST TREE, 25.93 METERS (85.1 FEET), N 26 DEG 09 MIN E.
 HV6385'NAIL IN BLAZE IN 8-INCH LOCUST TREE, 26.27 METERS (86.2 FEET),
 HV6385'N 83 DEG 46 MIN E.
 HV6385
 HV6385                          STATION RECOVERY (1932)
 HV6385
 HV6385'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6385'THE EDGE OF THE BLUFF HAS CAVED BEYOND THIS POSITION AND THE
 HV6385'STATION MARK IS LOST.
 HV6385'
 HV6385'THE REFERENCE MARK (MARYLAND SHELL FISH SURVEY MONUMENT) WAS
 HV6385'FOUND IN GOOD CONDITION BUT IS ONLY 2 METERS BACK FROM EDGE OF
 HV6385'CAVING BANK.  IT WILL PROBABLY BE LOST IN 2 OR 3 YEARS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4962 ***********************************************************************
 JV4962  DESIGNATION -  BLUFF
 JV4962  PID         -  JV4962
 JV4962  STATE/COUNTY-  MD/QUEEN ANNES
 JV4962  COUNTRY     -  US
 JV4962  USGS QUAD   -  CHESTERTOWN (2017)
 JV4962
 JV4962                         *CURRENT SURVEY CONTROL
 JV4962  ______________________________________________________________________
 JV4962* NAD 83(1991) POSITION- 39 14 07.67539(N) 076 00 10.63591(W)   ADJUSTED
 JV4962* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV4962  ______________________________________________________________________
 JV4962  GEOID HEIGHT    -        -33.482 (meters)                     GEOID18
 JV4962  LAPLACE CORR    -         -2.13  (seconds)                    DEFLEC18
 JV4962  HORZ ORDER      -  THIRD
 JV4962
 JV4962.The horizontal coordinates were established by classical geodetic methods
 JV4962.and adjusted by the National Geodetic Survey in January 1992.
 JV4962
 JV4962.The orthometric height was scaled from a topographic map.
 JV4962
 JV4962.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4962.GEOID18 height accuracy estimate available here.
 JV4962
 JV4962.Click photographs - Photos may exist for this station.
 JV4962
 JV4962.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4962
 JV4962. The following values were computed from the NAD 83(1991) position.
 JV4962
 JV4962;                    North         East     Units Scale Factor Converg.
 JV4962;SPC MD       -   174,616.060   486,079.136   MT  0.99996950   +0 37 32.8
 JV4962;SPC MD       -   572,886.19  1,594,744.63   sFT  0.99996950   +0 37 32.8
 JV4962;UTM  18      - 4,343,386.181   413,440.110   MT  0.99969225   -0 38 03.9
 JV4962
 JV4962!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4962!SPC MD       -   1.00000513  x   0.99996950  =   0.99997463
 JV4962!UTM  18      -   1.00000513  x   0.99969225  =   0.99969738
 JV4962
 JV4962:                Primary Azimuth Mark                     Grid Az
 JV4962:SPC MD       -  POSSUM                                   242 04 00.5
 JV4962:UTM  18      -  POSSUM                                   243 19 37.2
 JV4962
 JV4962_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1344043386(NAD 83)
 JV4962
 JV4962|---------------------------------------------------------------------|
 JV4962| PID    Reference Object                     Distance      Geod. Az  |
 JV4962|                                                           dddmmss.s |
 JV4962| JV4961 POSSUM                              APPROX. 0.7 KM 2424133.3 |
 JV4962|---------------------------------------------------------------------|
 JV4962
 JV4962                          SUPERSEDED SURVEY CONTROL
 JV4962
 JV4962  NAD 83(1986)-  39 14 07.66548(N)    076 00 10.65009(W) AD(       ) 3
 JV4962  NAD 27      -  39 14 07.26100(N)    076 00 11.85600(W) AD(       ) 3
 JV4962  USSD        -  39 14 07.73900(N)    076 00 11.60600(W) AD(       ) 3
 JV4962
 JV4962.Superseded values are not recommended for survey control.
 JV4962
 JV4962.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4962.See file dsdata.pdf to determine how the superseded data were derived.
 JV4962
 JV4962_MARKER: N = NAIL
 JV4962_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4962_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4962
 JV4962  HISTORY     - Date     Condition        Report By
 JV4962  HISTORY     - 1909     MONUMENTED       CGS
 JV4962  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV4962
 JV4962                          STATION DESCRIPTION
 JV4962
 JV4962'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JV4962'STATION IS ON THE SOUTHERN SHORE OF CHESTER RIVER, ON A BLUFF
 JV4962'ABOUT 15 FEET HIGH, ON LAND BELONGING TO M.O. WALKER (RENTED TO
 JV4962'A MR. STORY), AND ABOUT 400 METERS E OF POSSUM POINT.
 JV4962'
 JV4962'STATION IS MARKED BY A BURIED GLASS BOTTLE AND A NAIL IN CONCRETE
 JV4962'SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE TOP OF A 4-INCH
 JV4962'TILE AT THE SURFACE OF THE GROUND.
 JV4962'
 JV4962'REFERENCE MARKS ARE NAILS IN TRIANGULAR BLAZES CUT IN TWO
 JV4962'CHESTNUT-OAK TREES.  NO.1 IS 11.40 METERS (37.4 FEET) FROM STATION
 JV4962'S 76 DEG 44 MIN W.  AND NO.2 IS 7.36 METERS (24.15 FEET)
 JV4962'FROM STATION S 38 DEG 48 MIN E.
 JV4962
 JV4962                          STATION RECOVERY (1941)
 JV4962
 JV4962'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV4962'STATION SEARCHED FOR BUT NOT FOUND.  THERE IS CONSIDERABLE
 JV4962'EVIDENCE OF EROSION ALONG THE BANK, AND IT IS BELIEVED THAT THE
 JV4962'STATION AND REFERENCE TREES HAVE BEEN WASHED OUT.  RECOMMEND THAT
 JV4962'STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3570 ***********************************************************************
 JU3570  DESIGNATION -  BLUFF
 JU3570  PID         -  JU3570
 JU3570  STATE/COUNTY-  MD/CECIL
 JU3570  COUNTRY     -  US
 JU3570  USGS QUAD   -  EARLEVILLE (2016)
 JU3570
 JU3570                         *CURRENT SURVEY CONTROL
 JU3570  ______________________________________________________________________
 JU3570* NAD 83(1991) POSITION- 39 29 22.23472(N) 075 59 41.49600(W)   ADJUSTED
 JU3570* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3570  ______________________________________________________________________
 JU3570  GEOID HEIGHT    -        -33.312 (meters)                     GEOID18
 JU3570  LAPLACE CORR    -         -0.03  (seconds)                    DEFLEC18
 JU3570  HORZ ORDER      -  SECOND
 JU3570
 JU3570.The horizontal coordinates were established by classical geodetic methods
 JU3570.and adjusted by the National Geodetic Survey in January 1992.
 JU3570
 JU3570.The orthometric height was scaled from a topographic map.
 JU3570
 JU3570.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3570.GEOID18 height accuracy estimate available here.
 JU3570
 JU3570.Click photographs - Photos may exist for this station.
 JU3570
 JU3570.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3570
 JU3570. The following values were computed from the NAD 83(1991) position.
 JU3570
 JU3570;                    North         East     Units Scale Factor Converg.
 JU3570;SPC MD       -   202,826.243   486,467.394   MT  1.00000715   +0 37 51.1
 JU3570;SPC MD       -   665,439.10  1,596,018.44   sFT  1.00000715   +0 37 51.1
 JU3570;UTM  18      - 4,371,572.641   414,449.230   MT  0.99969011   -0 37 57.7
 JU3570
 JU3570!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3570!SPC MD       -   1.00000526  x   1.00000715  =   1.00001241
 JU3570!UTM  18      -   1.00000526  x   0.99969011  =   0.99969537
 JU3570
 JU3570:                Primary Azimuth Mark                     Grid Az
 JU3570:SPC MD       -  CLAY                                     015 06 56.1
 JU3570:UTM  18      -  CLAY                                     016 22 44.9
 JU3570
 JU3570_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1444971572(NAD 83)
 JU3570
 JU3570|---------------------------------------------------------------------|
 JU3570| PID    Reference Object                     Distance      Geod. Az  |
 JU3570|                                                           dddmmss.s |
 JU3570| JU3932 CLAY                                APPROX. 4.6 KM 0154447.2 |
 JU3570| CB1275 BLUFF RM 1                           10.500 METERS 21320     |
 JU3570|---------------------------------------------------------------------|
 JU3570
 JU3570                          SUPERSEDED SURVEY CONTROL
 JU3570
 JU3570  NAD 83(1986)-  39 29 22.22866(N)    075 59 41.50126(W) AD(       ) 2
 JU3570  NAD 27      -  39 29 21.80720(N)    075 59 42.69080(W) AD(       ) 2
 JU3570
 JU3570.Superseded values are not recommended for survey control.
 JU3570
 JU3570.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3570.See file dsdata.pdf to determine how the superseded data were derived.
 JU3570
 JU3570_MARKER: DS = TRIANGULATION STATION DISK
 JU3570_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3570_STAMPING: BLUFF 1937
 JU3570_MARK LOGO: CGS
 JU3570_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3570+STABILITY: SURFACE MOTION
 JU3570
 JU3570  HISTORY     - Date     Condition        Report By
 JU3570  HISTORY     - 1937     MONUMENTED       CGS
 JU3570
 JU3570                          STATION DESCRIPTION
 JU3570
 JU3570'DESCRIBED BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU3570'LOCATED ABOUT 2-1/2 MILES N OF TURKEY POINT ON THE W SIDE OF ELK
 JU3570'NECK, ON THE N SIDE OF A ROUNDING POINT KNOWN AS ROCKY
 JU3570'POINT.  THE STATION IS ON A SMALL KNOLL 4.3 METERS INSHORE FROM
 JU3570'A 10-FOOT BLUFF ALONG THE SHORE LINE AND 5 METERS W OF A 4-FOOT
 JU3570'DEEP GULLY.  TO THE E OF THE GULLY IS THE STEEP WOODED SLOPE OF
 JU3570'MAULDEN MT.  THE STATION MAY BEST BE VISITED BY BOAT.
 JU3570'
 JU3570'THE SURFACE STATION MARK IS MARKED BY
 JU3570'A STANDARD DISK STAMPED BLUFF 1937, SET IN THE TOP OF AN 8-INCH
 JU3570'SQUARE CONCRETE MONUMENT, PROJECTING 8 INCHES ABOVE
 JU3570'GROUND.  UNDERGROUND MARK IS A BLOCK OF CONCRETE BELOW THE GROUND
 JU3570'CONTAINING A STANDARD BRONZE DISK.
 JU3570'
 JU3570'REFERENCE MARK IS MARKED, BY A
 JU3570'STANDARD DISK, STAMPED NO.1, SET IN THE TOP OF AN 8-INCH SQUARE
 JU3570'CONCRETE MONUMENT, PROJECTING 12 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5962 ***********************************************************************
 HV5962  DESIGNATION -  BLUFF 1901
 HV5962  PID         -  HV5962
 HV5962  STATE/COUNTY-  MD/DORCHESTER
 HV5962  COUNTRY     -  US
 HV5962  USGS QUAD   -  CHURCH CREEK (2016)
 HV5962
 HV5962                         *CURRENT SURVEY CONTROL
 HV5962  ______________________________________________________________________
 HV5962* NAD 83(1991) POSITION- 38 31 55.81372(N) 076 08 48.69714(W)   ADJUSTED
 HV5962* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5962  ______________________________________________________________________
 HV5962  GEOID HEIGHT    -        -34.967 (meters)                     GEOID18
 HV5962  LAPLACE CORR    -         -4.11  (seconds)                    DEFLEC18
 HV5962  HORZ ORDER      -  THIRD
 HV5962
 HV5962.The horizontal coordinates were established by classical geodetic methods
 HV5962.and adjusted by the National Geodetic Survey in January 1992.
 HV5962
 HV5962.The orthometric height was scaled from a topographic map.
 HV5962
 HV5962.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5962.GEOID18 height accuracy estimate available here.
 HV5962
 HV5962.Click photographs - Photos may exist for this station.
 HV5962
 HV5962.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5962
 HV5962. The following values were computed from the NAD 83(1991) position.
 HV5962
 HV5962;                    North         East     Units Scale Factor Converg.
 HV5962;SPC MD       -    96,421.927   474,385.138   MT  0.99996773   +0 32 07.7
 HV5962;SPC MD       -   316,344.27  1,556,378.57   sFT  0.99996773   +0 32 07.7
 HV5962;UTM  18      - 4,265,486.393   400,039.205   MT  0.99972305   -0 42 52.2
 HV5962
 HV5962!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5962!SPC MD       -   1.00000552  x   0.99996773  =   0.99997325
 HV5962!UTM  18      -   1.00000552  x   0.99972305  =   0.99972857
 HV5962
 HV5962:                Primary Azimuth Mark                     Grid Az
 HV5962:SPC MD       -  WALNUT 1901                              235 00 53.5
 HV5962:UTM  18      -  WALNUT 1901                              236 15 53.4
 HV5962
 HV5962_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0003965486(NAD 83)
 HV5962
 HV5962|---------------------------------------------------------------------|
 HV5962| PID    Reference Object                     Distance      Geod. Az  |
 HV5962|                                                           dddmmss.s |
 HV5962| HV5926 WALNUT 1901                         448.044 METERS 2353301.2 |
 HV5962| HV5960 HEDGE 1901                          354.860 METERS 28852     |
 HV5962|---------------------------------------------------------------------|
 HV5962
 HV5962                          SUPERSEDED SURVEY CONTROL
 HV5962
 HV5962  NAD 83(1986)-  38 31 55.81112(N)    076 08 48.71345(W) AD(       ) 3
 HV5962  NAD 27      -  38 31 55.40400(N)    076 08 49.89900(W) AD(       ) 3
 HV5962  USSD        -  38 31 55.83500(N)    076 08 49.67900(W) AD(       ) 3
 HV5962
 HV5962.Superseded values are not recommended for survey control.
 HV5962
 HV5962.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5962.See file dsdata.pdf to determine how the superseded data were derived.
 HV5962
 HV5962
 HV5962  HISTORY     - Date     Condition        Report By
 HV5962  HISTORY     - 1901     MONUMENTED       CGS
 HV5962  HISTORY     - 1908     GOOD             CGS
 HV5962
 HV5962                          STATION DESCRIPTION
 HV5962
 HV5962'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV5962'ON THE S SIDE OF FISHING CREEK, ON POINT AT JUNCTION OF MAIN
 HV5962'BRANCHES OF CREEK, ON A LOW BLUFF AT END OF PEACH ORCHARD, 9.5
 HV5962'METERS (31 FEET) FROM END PEACH TREE ON OUTSIDE ROW, AND 8.4
 HV5962'METERS (27.6 FEET) N BY E FROM STUB ON BANK.  CENTER MARKED WITH
 HV5962'LOCUST STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5318 ***********************************************************************
 HV5318  DESIGNATION -  BLUFF 2
 HV5318  PID         -  HV5318
 HV5318  STATE/COUNTY-  MD/CHARLES
 HV5318  COUNTRY     -  US
 HV5318  USGS QUAD   -  MATHIAS POINT (2019)
 HV5318
 HV5318                         *CURRENT SURVEY CONTROL
 HV5318  ______________________________________________________________________
 HV5318* NAD 83(1993) POSITION- 38 25 32.03463(N) 077 00 15.31886(W)   ADJUSTED
 HV5318* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 HV5318  ______________________________________________________________________
 HV5318  GEOID HEIGHT    -        -33.244 (meters)                     GEOID18
 HV5318  LAPLACE CORR    -         -4.44  (seconds)                    DEFLEC18
 HV5318  HORZ ORDER      -  THIRD
 HV5318
 HV5318.The horizontal coordinates were established by classical geodetic methods
 HV5318.and adjusted by the National Geodetic Survey in November 1994.
 HV5318
 HV5318.The orthometric height was scaled from a topographic map.
 HV5318
 HV5318.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5318.GEOID18 height accuracy estimate available here.
 HV5318
 HV5318.Click photographs - Photos may exist for this station.
 HV5318
 HV5318.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5318
 HV5318. The following values were computed from the NAD 83(1993) position.
 HV5318
 HV5318;                    North         East     Units Scale Factor Converg.
 HV5318;SPC MD       -    84,240.878   399,628.429   MT  0.99998053   -0 00 09.6
 HV5318;SPC MD       -   276,380.28  1,311,114.27   sFT  0.99998053   -0 00 09.6
 HV5318;SPC VA N     - 2,085,300.107 3,630,600.330   MT  0.99995397   +0 56 00.7
 HV5318;SPC VA N     - 6,841,522.10 11,911,394.58   sFT  0.99995397   +0 56 00.7
 HV5318;UTM  18      - 4,254,936.313   325,045.295   MT  0.99997697   -1 14 45.4
 HV5318
 HV5318!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5318!SPC MD       -   1.00000384  x   0.99998053  =   0.99998437
 HV5318!SPC VA N     -   1.00000384  x   0.99995397  =   0.99995781
 HV5318!UTM  18      -   1.00000384  x   0.99997697  =   0.99998081
 HV5318
 HV5318:                Primary Azimuth Mark                     Grid Az
 HV5318:SPC MD       -  CLUB                                     229 32 07.7
 HV5318:SPC VA N     -  CLUB                                     228 35 57.4
 HV5318:UTM  18      -  CLUB                                     230 46 43.5
 HV5318
 HV5318_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2504554936(NAD 83)
 HV5318
 HV5318|---------------------------------------------------------------------|
 HV5318| PID    Reference Object                     Distance      Geod. Az  |
 HV5318|                                                           dddmmss.s |
 HV5318| DC6695 BLUFF 2 RM 2                                       05445     |
 HV5318| HV5305 CLUB                                APPROX. 4.3 KM 2293158.1 |
 HV5318| DC6694 BLUFF 2 RM 1                                       34957     |
 HV5318|---------------------------------------------------------------------|
 HV5318
 HV5318                          SUPERSEDED SURVEY CONTROL
 HV5318
 HV5318  NAD 83(1991)-  38 25 32.03477(N)    077 00 15.32326(W) AD(       ) 3
 HV5318  NAD 83(1986)-  38 25 32.03534(N)    077 00 15.33376(W) AD(       ) 3
 HV5318  NAD 27      -  38 25 31.58500(N)    077 00 16.42500(W) AD(       ) 3
 HV5318  USSD        -  38 25 32.22800(N)    077 00 16.52500(W) AD(       ) 3
 HV5318
 HV5318.Superseded values are not recommended for survey control.
 HV5318
 HV5318.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5318.See file dsdata.pdf to determine how the superseded data were derived.
 HV5318
 HV5318_MARKER: K = CLAY TILE PIPE
 HV5318_SETTING: 0 = UNSPECIFIED SETTING
 HV5318
 HV5318  HISTORY     - Date     Condition        Report By
 HV5318  HISTORY     - 1901     MONUMENTED       CGS
 HV5318  HISTORY     - 1927     GOOD             CGS
 HV5318  HISTORY     - 1928     GOOD             CGS
 HV5318  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV5318
 HV5318                          STATION DESCRIPTION
 HV5318
 HV5318'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (JEM)
 HV5318'ON THE EASTERN SHORE OF POTOMAC RIVER, ABOUT 2-1/4 MILES ABOVE
 HV5318'THE MOUTH OF POPES CREEK, ON THE SOUTHERN SLOPE OF THE FIRST HILL
 HV5318'BELOW THE MOUTH OF PORT TOBACCO CREEK SHOWING BARE FRONT TO
 HV5318'RIVER.  STATION WAS ALMOST ON LINE WITH RED BUOY BETWEEN IT AND
 HV5318'OUTER END OF PERSIMMON POINT.  STATION IS ABOUT 10 FEET LOWER
 HV5318'THAN SUMMIT OF HILL.  THE STATION IS 3.7 FEET BACK FROM THE
 HV5318'NEAREST EDGE OF THE BANK, WHICH HAS A PRECIPITOUS FACE.  IT WAS
 HV5318'MARKED BY A PIECE OF 4-INCH TILE PIPE, 3 FEET LONG, SET IN
 HV5318'CEMENT, LARGE END UP, ITS TOP FLUSH WITH THE SURFACE OF THE
 HV5318'GROUND.
 HV5318'
 HV5318'FOR REFERENCE MARK A 2-INCH DRAIN TILE, 15 INCHES LONG, WAS SET
 HV5318'IN CEMENT 12.22 METERS (40.1 FEET) FROM THE STATION N 41 DEG
 HV5318'16.8 MIN E.  A 20-INCH CHESTNUT TREE WAS BLAZED AT A POINT
 HV5318'ABOUT 2-1/2 FEET ABOVE THE GROUND.  IT IS 26.47 METERS (86.8 FEET)
 HV5318'FROM STATION N 54 DEG 36.7 MIN E., AND 15.99 METERS
 HV5318'(52.5 FEET) FROM THE TILE REFERENCE MARK.
 HV5318
 HV5318                          STATION RECOVERY (1927)
 HV5318
 HV5318'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1927 (FLP)
 HV5318'STATION RECOVERED.  THE STATION MARK WAS FOUND INTACT WITH ITS TOP
 HV5318'ABOUT FOUR INCHES BELOW THE SURFACE OF THE GROUND.  THE DESCRIPTION
 HV5318'STATED THAT THE STATION MARK WAS 3.7 FEET INSIDE THE EDGE OF THE
 HV5318'BLUFF.  THIS STATEMENT WAS APPARENTLY IN ERROR AS THE STATION MARK
 HV5318'IS NOW 2.67 METERS FROM THE EDGE OF THE BLUFF.  THE BLAZED WALNUT
 HV5318'TREE WAS RECOVERED.
 HV5318'
 HV5318'THE REFERENCE MARK MENTIONED IN THE DESCRIPTION WAS PROVED TO
 HV5318'HAVE BEEN DESTROYED.  THE WALNUT IS NOW DEAD.  THE BLAZE WAS RECUT
 HV5318'SO THAT IT IS PLAINLY VISIBLE TO A PERSON WALKING ALONG THE EDGE
 HV5318'OF THE BLUFF IN THE VICINITY OF THE STATION.  THE STATION MARK WAS
 HV5318'COVERED WITH EARTH AND SOD TO A DEPTH OF ABOUT FOUR INCHES.  A
 HV5318'SMALL PILE OF BRUSH, BOARDS AND DEAD LIMBS WAS PLACED OVER THE
 HV5318'STATION MARK TO FACILITATE RECOVERY BY ANY SUBSEQUENT PARTY
 HV5318'SEARCHING THIS SEASON.
 HV5318'
 HV5318'THE STATION SHOULD HAVE ADEQUATE PERMANENT REFERENCE MARKS PUT
 HV5318'IN AS SOON AS PRACTICABLE.
 HV5318'
 HV5318'THIS STATION OCCUPIES A COMMANDING POSITION WITH RESPECT TO
 HV5318'THE POTOMAC RIVER FROM MARYLAND POINT TO LOWER CEDAR POINT.  A
 HV5318'TRUCK CAN APPROACH BY ROAD TO WITHIN 500 YARDS OF THE STATION.
 HV5318
 HV5318                          STATION RECOVERY (1928)
 HV5318
 HV5318'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1928 (PCD)
 HV5318'STATION RECOVERED AS DESCRIBED BY FRED L. PEACOCK 1927.  DIRT WAS
 HV5318'CLEANED OUT OF THE TILE PIPE AND PIPE WAS FILLED WITH CONCRETE
 HV5318'AND STANDARD BRASS TABLET WAS SET IN THE CENTER OF THE PIPE.
 HV5318'
 HV5318'REFERENCE MARKS WERE ESTABLISHED, ONE STANDARD CONCRETE MARK SET
 HV5318'IN OLD FENCE LINE ABOUT 100 FEET N OF THE MARK-UP HILL, AND ONE,
 HV5318'A STANDARD CONCRETE MARK SET ABOUT 100 FEET DOWNHILL TO THE E OF
 HV5318'THE MARK AND IN LINE WITH LARGE BLAZED WALNUT TREE.
 HV5318
 HV5318                          STATION RECOVERY (1942)
 HV5318
 HV5318'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV5318'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE AND
 HV5318'ONE-HALF HOURS, BUT NO TRACE OF IT COULD BE FOUND.  IT IS
 HV5318'RECOMMENDED THAT THIS STATION BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5206 ***********************************************************************
 JV5206  DESIGNATION -  BLUFF 2
 JV5206  PID         -  JV5206
 JV5206  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5206  COUNTRY     -  US
 JV5206  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5206
 JV5206                         *CURRENT SURVEY CONTROL
 JV5206  ______________________________________________________________________
 JV5206* NAD 83(1991) POSITION- 39 04 22.92949(N) 076 26 32.15352(W)   ADJUSTED
 JV5206* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5206  ______________________________________________________________________
 JV5206  GEOID HEIGHT    -        -33.273 (meters)                     GEOID18
 JV5206  LAPLACE CORR    -         -2.40  (seconds)                    DEFLEC18
 JV5206  HORZ ORDER      -  THIRD
 JV5206
 JV5206.The horizontal coordinates were established by classical geodetic methods
 JV5206.and adjusted by the National Geodetic Survey in January 1992.
 JV5206
 JV5206.The orthometric height was scaled from a topographic map.
 JV5206
 JV5206.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5206.GEOID18 height accuracy estimate available here.
 JV5206
 JV5206.Click photographs - Photos may exist for this station.
 JV5206
 JV5206.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5206
 JV5206. The following values were computed from the NAD 83(1991) position.
 JV5206
 JV5206;                    North         East     Units Scale Factor Converg.
 JV5206;SPC MD       -   156,261.440   448,262.443   MT  0.99995575   +0 21 00.2
 JV5206;SPC MD       -   512,667.74  1,470,674.37   sFT  0.99995575   +0 21 00.2
 JV5206;UTM  18      - 4,325,871.393   375,237.513   MT  0.99979166   -0 54 33.1
 JV5206
 JV5206!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5206!SPC MD       -   1.00000432  x   0.99995575  =   0.99996007
 JV5206!UTM  18      -   1.00000432  x   0.99979166  =   0.99979598
 JV5206
 JV5206:                Primary Azimuth Mark                     Grid Az
 JV5206:SPC MD       -  PURSE RESET                              170 29 01.0
 JV5206:UTM  18      -  PURSE RESET                              171 44 34.3
 JV5206
 JV5206_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7523725871(NAD 83)
 JV5206
 JV5206|---------------------------------------------------------------------|
 JV5206| PID    Reference Object                     Distance      Geod. Az  |
 JV5206|                                                           dddmmss.s |
 JV5206| CA9980 BLUFF RM                              5.000 METERS 05931     |
 JV5206| JV5249 PURSE RESET                         APPROX. 2.6 KM 1705001.2 |
 JV5206|---------------------------------------------------------------------|
 JV5206
 JV5206                          SUPERSEDED SURVEY CONTROL
 JV5206
 JV5206  NAD 83(1986)-  39 04 22.92528(N)    076 26 32.16426(W) AD(       ) 3
 JV5206  NAD 27      -  39 04 22.52200(N)    076 26 33.29700(W) AD(       ) 3
 JV5206  USSD        -  39 04 22.87500(N)    076 26 33.14600(W) AD(       ) 3
 JV5206
 JV5206.Superseded values are not recommended for survey control.
 JV5206
 JV5206.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5206.See file dsdata.pdf to determine how the superseded data were derived.
 JV5206
 JV5206_MARKER: N = NAIL
 JV5206_SETTING: 0 = UNSPECIFIED SETTING
 JV5206
 JV5206  HISTORY     - Date     Condition        Report By
 JV5206  HISTORY     - 1906     MONUMENTED       MDSFC
 JV5206  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5206
 JV5206                          STATION DESCRIPTION
 JV5206
 JV5206'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 JV5206'ON THE W SIDE OF GIBSON ISLAND, AND NW SHORE OF MAGOTHY RIVER,
 JV5206'ABOUT 1 MILE NW OF AND NEAR THE CENTER OF THE THIRD PROMINENT
 JV5206'BLUFF FROM MOUNTAIN POINT.  STATION IS ON TOP OF A BLUFF 20 FEET
 JV5206'HIGH, AND IN THICK WOODS ABOUT 15 FEET FROM THE EDGE OF THE BLUFF.
 JV5206'STATION MARK IS NAIL IN WOODEN STUB FLUSH WITH THE GROUND.
 JV5206'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5206'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5206'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.
 JV5206'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 JV5206'IT IS 5.00 METERS (16.40 FEET) FROM STATION IN BEARING N 59 DEG 31
 JV5206'MIN E.  DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 JV5206'REFERENCE ARE AS FOLLOWS--LEFT TANGENT DOBBINS ISLAND, 1 MILE, N 75
 JV5206'DEG 06 MIN W.  CHIMNEY OF WHITE HOUSE ON DOBBINS ISLAND, 1 MILE, N 68
 JV5206'DEG 54 MIN W.  RIGHT TANGENT DOBBINS ISLAND, 1 MILE, N 65 DEG 42
 JV5206'MIN W.  NAIL IN BLAZE IN 15-INCH TREE, 7.94 METERS (26.05 FEET), N
 JV5206'1 DEG 47 MIN E.  NAIL IN BLAZE IN 12-INCH TREE, 6.35 METERS (20.83
 JV5206'FEET), N 86 DEG 46 MIN E.  LONE TREE NEAR TRIANGULATION STATION
 JV5206'PURSE, 2 MILES, S 7 DEG 22 MIN E.
 JV5206
 JV5206                          STATION RECOVERY (1933)
 JV5206
 JV5206'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5206'STATION WAS SET ON THE TOP OF A BLUFF 20 FEET HIGH AND 15 FEET
 JV5206'FROM THE EDGE.  THE BLUFF HAS BEEN WASHED BADLY AND THE STATION
 JV5206'POSITION NOW FALLS ABOUT 25 FEET FROM THE EDGE OF THE BLUFF,
 JV5206'TOWARD THE RIVER.  NO TRACE OF STATION, A NAIL IN WOOD HUB, OR OF
 JV5206'ANY REFERENCES, WAS FOUND.  STATION AND REFERENCE MONUMENT WERE
 JV5206'PROBABLY DESTROYED DURING THE EROSION OF THE BLUFF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5319 ***********************************************************************
 HV5319  DESIGNATION -  BLUFF 3
 HV5319  PID         -  HV5319
 HV5319  STATE/COUNTY-  MD/CHARLES
 HV5319  COUNTRY     -  US
 HV5319  USGS QUAD   -  MATHIAS POINT (2019)
 HV5319
 HV5319                         *CURRENT SURVEY CONTROL
 HV5319  ______________________________________________________________________
 HV5319* NAD 83(1993) POSITION- 38 25 26.87406(N) 077 00 12.25230(W)   ADJUSTED
 HV5319* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5319  ______________________________________________________________________
 HV5319  GEOID HEIGHT    -        -33.249 (meters)                     GEOID18
 HV5319  LAPLACE CORR    -         -4.42  (seconds)                    DEFLEC18
 HV5319  HORZ ORDER      -  THIRD
 HV5319
 HV5319.The horizontal coordinates were established by classical geodetic methods
 HV5319.and adjusted by the National Geodetic Survey in November 1994.
 HV5319
 HV5319.The orthometric height was scaled from a topographic map.
 HV5319
 HV5319.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5319.GEOID18 height accuracy estimate available here.
 HV5319
 HV5319.Click photographs - Photos may exist for this station.
 HV5319
 HV5319.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5319
 HV5319. The following values were computed from the NAD 83(1993) position.
 HV5319
 HV5319;                    North         East     Units Scale Factor Converg.
 HV5319;SPC MD       -    84,081.754   399,702.805   MT  0.99998072   -0 00 07.7
 HV5319;SPC MD       -   275,858.22  1,311,358.29   sFT  0.99998072   -0 00 07.7
 HV5319;SPC VA N     - 2,085,142.223 3,630,677.294   MT  0.99995405   +0 56 02.6
 HV5319;SPC VA N     - 6,841,004.11 11,911,647.09   sFT  0.99995405   +0 56 02.6
 HV5319;UTM  18      - 4,254,775.613   325,116.200   MT  0.99997666   -1 14 43.4
 HV5319
 HV5319!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5319!SPC MD       -   1.00000526  x   0.99998072  =   0.99998598
 HV5319!SPC VA N     -   1.00000526  x   0.99995405  =   0.99995931
 HV5319!UTM  18      -   1.00000526  x   0.99997666  =   0.99998192
 HV5319
 HV5319:                Primary Azimuth Mark                     Grid Az
 HV5319:SPC MD       -  POTOMAC RIVER BRIDGE RED LIGHT           170 46 22.9
 HV5319:SPC VA N     -  POTOMAC RIVER BRIDGE RED LIGHT           169 50 12.6
 HV5319:UTM  18      -  POTOMAC RIVER BRIDGE RED LIGHT           172 00 58.6
 HV5319
 HV5319_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2511654775(NAD 83)
 HV5319
 HV5319|---------------------------------------------------------------------|
 HV5319| PID    Reference Object                     Distance      Geod. Az  |
 HV5319|                                                           dddmmss.s |
 HV5319| DC6698 BLUFF 3 RM 2                                       15221     |
 HV5319| HV7092 POTOMAC RIVER BRIDGE RED LIGHT      APPROX. 6.9 KM 1704615.2 |
 HV5319|---------------------------------------------------------------------|
 HV5319
 HV5319                          SUPERSEDED SURVEY CONTROL
 HV5319
 HV5319  NAD 83(1991)-  38 25 26.87457(N)    077 00 12.25620(W) AD(       ) 3
 HV5319  NAD 83(1986)-  38 25 26.87428(N)    077 00 12.26710(W) AD(       ) 3
 HV5319  NAD 27      -  38 25 26.42600(N)    077 00 13.34800(W) AD(       ) 3
 HV5319
 HV5319.Superseded values are not recommended for survey control.
 HV5319
 HV5319.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5319.See file dsdata.pdf to determine how the superseded data were derived.
 HV5319
 HV5319_MARKER: DS = TRIANGULATION STATION DISK
 HV5319_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV5319_STAMPING: BLUFF 3 1942
 HV5319_MARK LOGO: CGS
 HV5319_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5319
 HV5319  HISTORY     - Date     Condition        Report By
 HV5319  HISTORY     - 1942     MONUMENTED       USN
 HV5319  HISTORY     - 1962     GOOD             CGS
 HV5319
 HV5319                          STATION DESCRIPTION
 HV5319
 HV5319'DESCRIBED BY US NAVY 1942 (RSD)
 HV5319'ON THE E SHORE OF POTOMAC RIVER, ABOUT 2-1/4 MI. ABOVE THE MOUTH
 HV5319'OF POPES CREEK.  STATION IS ON A NARROW SAND-AND-GRAVEL RIDGE
 HV5319'WHICH BOUNDS THE MARSH BETWEEN TWO SLOPES OF THE HILLS, ABOUT
 HV5319'120 FT. FROM THE FOOT OF THE S SLOPE OF THE FIRST HILL BELOW THE
 HV5319'MOUTH OF PORT TOBACCO CREEK.  THE STATION IS MARKED BY A BRONZE
 HV5319'COAST AND GEODETIC TABLET IN A 6-IN. TERRA-COTTA PIPE BELL END
 HV5319'UP, EMBEDDED IN CONCRETE, 17 FT. INSHORE FROM THE HIGH WATER
 HV5319'MARK, 9 FT. IN FRONT OF THE MARSH EDGE, AND 175 FT. N OF A
 HV5319'SMALL GUT DRAINING MARSH.
 HV5319'
 HV5319'REFERENCE MARK IS A BLAZE ON A 12-IN. PERSIMMON TREE, 49.7
 HV5319'FT. N OF THE STATION, 20 FT. IN FROM THE HIGH WATER MARK.  BLAZE
 HV5319'IS 2 FT. FROM THE GROUND MARKED WITH FIVE NAILS.
 HV5319
 HV5319                          STATION RECOVERY (1962)
 HV5319
 HV5319'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (DGR)
 HV5319'STATION MARK WAS RECOVERED IN GOOD CONDITION.
 HV5319'
 HV5319'IT IS 3.4 FEET W OF A METAL WITNESS POST.
 HV5319'
 HV5319'THE REFERENCE MARK WAS RECOVERED BUT WAS IN POOR CONDITION.
 HV5319'
 HV5319'ANOTHER REFERENCE MARK WAS SET 51.47 FEET SE OF STATION.  IT IS
 HV5319'A STANDARD DISK SET IN A CONCRETE POST FLUSH WITH THE GROUND.  IT
 HV5319'IS STAMPED BLUFF 3 NO. 2, 1962.  PREVIOUS DESCRIPTION BY
 HV5319'S. DEMENT, 1942, IS ADEQUATE FOR LOCATING THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7087 ***********************************************************************
 HV7087  DESIGNATION -  BM
 HV7087  PID         -  HV7087
 HV7087  STATE/COUNTY-  MD/CHARLES
 HV7087  COUNTRY     -  US
 HV7087  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7087
 HV7087                         *CURRENT SURVEY CONTROL
 HV7087  ______________________________________________________________________
 HV7087* NAD 83(1993) POSITION- 38 21 02.49221(N) 076 53 43.40548(W)   ADJUSTED
 HV7087* NAVD 88 ORTHO HEIGHT -    45.    (meters)      148.    (feet) SCALED
 HV7087  ______________________________________________________________________
 HV7087  GEOID HEIGHT    -        -33.585 (meters)                     GEOID18
 HV7087  LAPLACE CORR    -         -2.77  (seconds)                    DEFLEC18
 HV7087  HORZ ORDER      -  SECOND
 HV7087
 HV7087.The horizontal coordinates were established by classical geodetic methods
 HV7087.and adjusted by the National Geodetic Survey in November 1994.
 HV7087
 HV7087.The orthometric height was scaled from a topographic map.
 HV7087
 HV7087.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7087.GEOID18 height accuracy estimate available here.
 HV7087
 HV7087.Click photographs - Photos may exist for this station.
 HV7087
 HV7087.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7087
 HV7087. The following values were computed from the NAD 83(1993) position.
 HV7087
 HV7087;                    North         East     Units Scale Factor Converg.
 HV7087;SPC MD       -    75,935.047   409,144.111   MT  0.99999157   +0 03 56.4
 HV7087;SPC MD       -   249,130.23  1,342,333.64   sFT  0.99999157   +0 03 56.4
 HV7087;UTM  18      - 4,246,426.324   334,378.352   MT  0.99993782   -1 10 34.7
 HV7087
 HV7087!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7087!SPC MD       -   0.99999825  x   0.99999157  =   0.99998982
 HV7087!UTM  18      -   0.99999825  x   0.99993782  =   0.99993607
 HV7087
 HV7087_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3437846426(NAD 83)
 HV7087
 HV7087                          SUPERSEDED SURVEY CONTROL
 HV7087
 HV7087  NAD 83(1991)-  38 21 02.49198(N)    076 53 43.40999(W) AD(       ) 2
 HV7087  NAD 83(1986)-  38 21 02.49236(N)    076 53 43.42106(W) AD(       ) 2
 HV7087  NAD 27      -  38 21 02.03295(N)    076 53 44.52453(W) AD(       ) 2
 HV7087
 HV7087.Superseded values are not recommended for survey control.
 HV7087
 HV7087.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7087.See file dsdata.pdf to determine how the superseded data were derived.
 HV7087
 HV7087_MARKER: DD = SURVEY DISK
 HV7087_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV7087_MARK LOGO: CGS+SS
 HV7087_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7087
 HV7087  HISTORY     - Date     Condition        Report By
 HV7087  HISTORY     - 1934     MONUMENTED       CGS
 HV7087
 HV7087                          STATION DESCRIPTION
 HV7087
 HV7087'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 HV7087'STATION VICTORIA IS LOCATED ABOUT 15 MILES SE OF LA PLATA AT THE
 HV7087'JUNCTION OF THE MORGANTOWN-MT. VICTORIA AND THE MT.
 HV7087'VICTORIA-NEWBERG ROADS, IN FRONT OF A STUCCO HOUSE ABOUT 0.2 MILE
 HV7087'S OF THE MT. VICTORIA POST OFFICE.  IT IS 148 FEET W OF THE STUCCO
 HV7087'HOUSE, 99 FEET E OF THE HIGHWAY AND 30 FEET S OF THE S DRIVEWAY TO
 HV7087'THE HOUSE.  IT PROJECTS ABOUT 5 INCHES AND IS STAMPED VICTORIA 1934.
 HV7087'
 HV7087'DISTANCE AND DIRECTION WAS MEASURED TO THIS BENCH MARK FROM
 HV7087'STATION VICTORIA.THIS BENCH MARK IS LOCATED W OF STATION VICTORIA
 HV7087'AT THE E SHOULDER OF THE HIGHWAY.  IT IS MARKED BY A STANDARD
 HV7087'STATE SURVEY DISK SET IN THE TOP OF A 6-INCH SQUARE PRE-CAST
 HV7087'CONCRETE POST THAT PROJECTS 6 INCHES AND IS NOT STAMPED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2777 ***********************************************************************
 JV2777  DESIGNATION -  BM 1774
 JV2777  PID         -  JV2777
 JV2777  STATE/COUNTY-  MD/MONTGOMERY
 JV2777  COUNTRY     -  US
 JV2777  USGS QUAD   -  KENSINGTON (2016)
 JV2777
 JV2777                         *CURRENT SURVEY CONTROL
 JV2777  ______________________________________________________________________
 JV2777* NAD 83(1986) POSITION- 39 01 59.     (N) 077 02 52.     (W)   SCALED
 JV2777* NAVD 88 ORTHO HEIGHT -   113.34  (+/-2cm)      371.8   (feet) VERTCON3
 JV2777  ______________________________________________________________________
 JV2777  GEOID HEIGHT    -        -31.913 (meters)                     GEOID18
 JV2777  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2777
 JV2777.The horizontal coordinates were scaled from a map and have
 JV2777.an estimated accuracy of +/- 6 seconds.
 JV2777
 JV2777.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2777.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2777
 JV2777.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2777.GEOID18 height accuracy estimate available here.
 JV2777
 JV2777.The vertical order pertains to the NGVD 29 superseded value.
 JV2777
 JV2777.Click photographs - Photos may exist for this station.
 JV2777
 JV2777;                    North         East    Units  Estimated Accuracy
 JV2777;SPC MD       -   151,680.      395,860.      MT  (+/- 180 meters Scaled)
 JV2777
 JV2777_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ227224(NAD 83)
 JV2777
 JV2777                          SUPERSEDED SURVEY CONTROL
 JV2777
 JV2777  NGVD 29 (11/26/84)  113.553  (m)          372.55   (f) ADJUSTED    2 0
 JV2777
 JV2777.Superseded values are not recommended for survey control.
 JV2777
 JV2777.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2777.See file dsdata.pdf to determine how the superseded data were derived.
 JV2777
 JV2777_MARKER: DD = SURVEY DISK
 JV2777_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2777_MARK LOGO: CGS+SS
 JV2777_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2777+STABILITY: SURFACE MOTION
 JV2777
 JV2777  HISTORY     - Date     Condition        Report By
 JV2777  HISTORY     - 1934     MONUMENTED       MDGS
 JV2777  HISTORY     - 1939     GOOD             CGS
 JV2777
 JV2777                          STATION DESCRIPTION
 JV2777
 JV2777'DESCRIBED BY COAST AND GEODETIC SURVEY 1939
 JV2777'0.8 MI S FROM WHEATON.
 JV2777'ON GEORGIA AVENUE (STATE HIGHWAY 97), NEAR THE JUNCTION OF
 JV2777'PLYERS MILL ROAD, 73.4 FEET NORTHEAST ACROSS THE HIGHWAY FROM
 JV2777'A 10-INCH CEDAR TREE, 47.1 FEET EAST ACROSS THE HIGHWAY FROM
 JV2777'A NAIL IN THE TOP OF A STUMP, AND 23 FEET EAST OF THE CENTERLINE
 JV2777'OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2692 ***********************************************************************
 JV2692  DESIGNATION -  BM 1776 MDGS
 JV2692  PID         -  JV2692
 JV2692  STATE/COUNTY-  MD/MONTGOMERY
 JV2692  COUNTRY     -  US
 JV2692  USGS QUAD   -  KENSINGTON (2016)
 JV2692
 JV2692                         *CURRENT SURVEY CONTROL
 JV2692  ______________________________________________________________________
 JV2692* NAD 83(1986) POSITION- 39 02 11.     (N) 077 03 44.     (W)   SCALED
 JV2692* NAVD 88 ORTHO HEIGHT -   128.70  (+/-2cm)      422.2   (feet) VERTCON3
 JV2692  ______________________________________________________________________
 JV2692  GEOID HEIGHT    -        -31.888 (meters)                     GEOID18
 JV2692  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2692
 JV2692.The horizontal coordinates were scaled from a map and have
 JV2692.an estimated accuracy of +/- 6 seconds.
 JV2692
 JV2692.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2692.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2692
 JV2692.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2692.GEOID18 height accuracy estimate available here.
 JV2692
 JV2692.The vertical order pertains to the NGVD 29 superseded value.
 JV2692
 JV2692.Click photographs - Photos may exist for this station.
 JV2692
 JV2692;                    North         East    Units  Estimated Accuracy
 JV2692;SPC MD       -   152,050.      394,610.      MT  (+/- 180 meters Scaled)
 JV2692
 JV2692_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ215228(NAD 83)
 JV2692
 JV2692                          SUPERSEDED SURVEY CONTROL
 JV2692
 JV2692  NGVD 29 (11/26/84)  128.913  (m)          422.94   (f) ADJUSTED    2 0
 JV2692
 JV2692.Superseded values are not recommended for survey control.
 JV2692
 JV2692.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2692.See file dsdata.pdf to determine how the superseded data were derived.
 JV2692
 JV2692_MARKER: DD = SURVEY DISK
 JV2692_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2692_MARK LOGO: CGS+SS
 JV2692_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2692+STABILITY: SURFACE MOTION
 JV2692
 JV2692  HISTORY     - Date     Condition        Report By
 JV2692  HISTORY     - 1934     MONUMENTED       MDGS
 JV2692  HISTORY     - 1951     GOOD             CGS
 JV2692  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV2692
 JV2692                          STATION DESCRIPTION
 JV2692
 JV2692'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV2692'0.5 MI W FROM WHEATON.
 JV2692'ON THE KENSINGTON-WHEATON ROAD (STATE HIGHWAY 193), NEAR THE
 JV2692'JUNCTION OF WEST AVENUE, 64.9 FEET SOUTH ACROSS THE ROAD FROM AN
 JV2692'18-INCH WHITE OAK TREE, 51.7 FEET SOUTH OF AN 18-INCH HICKORY
 JV2692'TREE, 81.9 FEET SOUTHWEST OF A NAIL IN A POLE, AND 49 FEET WEST
 JV2692'OF A POLE.
 JV2692
 JV2692                          STATION RECOVERY (1951)
 JV2692
 JV2692'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 JV2692'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2614 ***********************************************************************
 JV2614  DESIGNATION -  BM 2242 MDGS
 JV2614  PID         -  JV2614
 JV2614  STATE/COUNTY-  MD/MONTGOMERY
 JV2614  COUNTRY     -  US
 JV2614  USGS QUAD   -  SANDY SPRING (2016)
 JV2614
 JV2614                         *CURRENT SURVEY CONTROL
 JV2614  ______________________________________________________________________
 JV2614* NAD 83(1986) POSITION- 39 08 45.     (N) 077 04 01.     (W)   SCALED
 JV2614* NAVD 88 ORTHO HEIGHT -   166.43  (+/-2cm)      546.0   (feet) VERTCON3
 JV2614  ______________________________________________________________________
 JV2614  GEOID HEIGHT    -        -31.820 (meters)                     GEOID18
 JV2614  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 JV2614
 JV2614.The horizontal coordinates were scaled from a map and have
 JV2614.an estimated accuracy of +/- 6 seconds.
 JV2614
 JV2614.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2614.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2614
 JV2614.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2614.GEOID18 height accuracy estimate available here.
 JV2614
 JV2614.The vertical order pertains to the NGVD 29 superseded value.
 JV2614
 JV2614.Click photographs - Photos may exist for this station.
 JV2614
 JV2614;                    North         East    Units  Estimated Accuracy
 JV2614;SPC MD       -   164,200.      394,210.      MT  (+/- 180 meters Scaled)
 JV2614
 JV2614_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ213349(NAD 83)
 JV2614
 JV2614                          SUPERSEDED SURVEY CONTROL
 JV2614
 JV2614  NGVD 29 (11/26/84)  166.634  (m)          546.70   (f) ADJUSTED    2 0
 JV2614
 JV2614.Superseded values are not recommended for survey control.
 JV2614
 JV2614.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2614.See file dsdata.pdf to determine how the superseded data were derived.
 JV2614
 JV2614_MARKER: DD = SURVEY DISK
 JV2614_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2614_MARK LOGO: CGS+SS
 JV2614_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2614+STABILITY: SURFACE MOTION
 JV2614
 JV2614  HISTORY     - Date     Condition        Report By
 JV2614  HISTORY     - 1934     MONUMENTED       MDGS
 JV2614  HISTORY     - 1967     GOOD             MDSRC
 JV2614  HISTORY     - 19950817 MARK NOT FOUND   USPSQD
 JV2614
 JV2614                          STATION DESCRIPTION
 JV2614
 JV2614'DESCRIBED BY MD STATE ROADS COMM 1967
 JV2614'0.9 MI S FROM OLNEY.
 JV2614'ON GEORGIA AVE. (STATE HIGHWAY 97), ABOUT 900 FT. SOUTH OF OLNEY
 JV2614'INN, AT JUNCTION OF A DRIVE LEADING EAST.  44 FT. EAST ACROSS THE
 JV2614'HIGHWAY FROM P.E.P. CO. POLE 75914G, 3.8 FT N. OF PP-TR-5500, 19.3
 JV2614'FT EAST OF THE CENTERLINE OF HIGHWAY 97, 21.9 FT N. OF CENTERLINE
 JV2614'OF DRIVEWAY.
 JV2614
 JV2614                          STATION RECOVERY (1995)
 JV2614
 JV2614'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2614'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2741 ***********************************************************************
 HU2741  DESIGNATION -  BM 227
 HU2741  PID         -  HU2741
 HU2741  STATE/COUNTY-  MD/DORCHESTER
 HU2741  COUNTRY     -  US
 HU2741  USGS QUAD   -  CHICAMACOMICO RIVER (2016)
 HU2741
 HU2741                         *CURRENT SURVEY CONTROL
 HU2741  ______________________________________________________________________
 HU2741* NAD 83(1991) POSITION- 38 29 58.01852(N) 075 54 27.03722(W)   ADJUSTED
 HU2741* NAVD 88 ORTHO HEIGHT -     2.9   (meters)       10.    (feet) VERTCON3
 HU2741  ______________________________________________________________________
 HU2741  GEOID HEIGHT    -        -35.371 (meters)                     GEOID18
 HU2741  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 HU2741  HORZ ORDER      -  SECOND
 HU2741
 HU2741.The horizontal coordinates were established by classical geodetic methods
 HU2741.and adjusted by the National Geodetic Survey in January 1992.
 HU2741
 HU2741.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2741.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2741
 HU2741.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2741.GEOID18 height accuracy estimate available here.
 HU2741
 HU2741.Click photographs - Photos may exist for this station.
 HU2741
 HU2741.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2741
 HU2741. The following values were computed from the NAD 83(1991) position.
 HU2741
 HU2741;                    North         East     Units Scale Factor Converg.
 HU2741;SPC MD       -    93,012.463   495,296.610   MT  0.99997129   +0 41 08.5
 HU2741;SPC MD       -   305,158.39  1,624,985.63   sFT  0.99997129   +0 41 08.5
 HU2741;UTM  18      - 4,261,622.500   420,865.674   MT  0.99967712   -0 33 53.9
 HU2741
 HU2741!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2741!SPC MD       -   1.00000509  x   0.99997129  =   0.99997638
 HU2741!UTM  18      -   1.00000509  x   0.99967712  =   0.99968221
 HU2741
 HU2741_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2086561622(NAD 83)
 HU2741
 HU2741                          SUPERSEDED SURVEY CONTROL
 HU2741
 HU2741  NAD 83(1986)-  38 29 58.01564(N)    075 54 27.05723(W) AD(       ) 2
 HU2741  NGVD 29 (11/20/91)    3.2    (m)           10.     (f) VERT ANG       
 HU2741
 HU2741.Superseded values are not recommended for survey control.
 HU2741
 HU2741.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2741.See file dsdata.pdf to determine how the superseded data were derived.
 HU2741
 HU2741_MARKER: DB = BENCH MARK DISK
 HU2741_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2741_STAMPING: 227
 HU2741_MARK LOGO: MD-019
 HU2741_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2741_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2741+STABILITY: SURFACE MOTION
 HU2741_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2741+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2006
 HU2741
 HU2741  HISTORY     - Date     Condition        Report By
 HU2741  HISTORY     - UNK      MONUMENTED       MD-019
 HU2741  HISTORY     - 19880323 GOOD             NGS
 HU2741  HISTORY     - 20060329 GOOD             USPSQD
 HU2741
 HU2741                          STATION DESCRIPTION
 HU2741
 HU2741'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 HU2741'THE MARK IS LOCATED ABOUT 1.9 KM (1.20 MI) SOUTH OF THE SMALL COMUNITY
 HU2741'OF SALEM.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2741'TO REACH THE MARK FROM THE POST OFFICE IN LINKWOOD, GO SOUTHEAST ON
 HU2741'U.S. HIGHWAY 50 FOR 3.55 KM (2.20 MI) TO A SIDE ROAD RIGHT.  TURN
 HU2741'RIGHT AND GO SOUTHEAST ON SALEM ROAD FOR 0.85 KM (0.55 MI) TO A SIDE
 HU2741'ROAD RIGHT.  TURN RIGHT AND GO SOUTH ON RAVENWOOD ROAD FOR 1.90 KM
 HU2741'(1.20 MI) TO THE MARK ON THE LEFT.
 HU2741'THE MARK IS SET IN THE TOP OF A 0.15 M (0.5 FT) SQUARE CONCRETE POST
 HU2741'FLUSH WITH THE GROUND.  IT IS 49.2 M (161.4 FT) WEST OF A POWERLINE
 HU2741'POLE, 46.2 M (151.6 FT) EAST-SOUTHEAST OF THE EAST CORNER OF ONE STORY
 HU2741'BRICK HOME, 29.8 M (97.8 FT) SOUTHEAST OF THE CENTERLINE OF A DIRT
 HU2741'DRIVEWAY, 6.7 M (22.0 FT) EAST-NORTHEAST OF THE CENTERLINE OF
 HU2741'RAVENWOOD ROAD, 1.1 M (3.6 FT) NORTHWEST OF A POWERLINE POLE NUMBERED
 HU2741'501 128 27 AND 0.3 M (1.0 FT) SOUTHEAST OF A STEEL WITNESS POST.
 HU2741
 HU2741                          STATION RECOVERY (2006)
 HU2741
 HU2741'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU2741'THIS IS A DORCHESTER COUNTY SURVEY MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6691 ***********************************************************************
 JV6691  DESIGNATION -  BM 4979
 JV6691  PID         -  JV6691
 JV6691  STATE/COUNTY-  MD/MONTGOMERY
 JV6691  COUNTRY     -  US
 JV6691  USGS QUAD   -  POOLESVILLE (2016)
 JV6691
 JV6691                         *CURRENT SURVEY CONTROL
 JV6691  ______________________________________________________________________
 JV6691* NAD 83(2011) POSITION- 39 13 12.94426(N) 077 25 15.57424(W)   ADJUSTED
 JV6691* NAD 83(2011) ELLIP HT-    80.693 (meters)        (06/27/12)   ADJUSTED
 JV6691* NAD 83(2011) EPOCH   -  2010.00
 JV6691* NAVD 88 ORTHO HEIGHT -   113.0   (meters)      371.    (feet) GPS OBS
 JV6691  ______________________________________________________________________
 JV6691  NAVD 88 orthometric height was determined with an earlier geoid model
 JV6691  GEOID HEIGHT    -        -32.286 (meters)                     GEOID18
 JV6691  NAD 83(2011) X  -  1,077,595.718 (meters)                     COMP
 JV6691  NAD 83(2011) Y  - -4,829,196.739 (meters)                     COMP
 JV6691  NAD 83(2011) Z  -  4,011,341.959 (meters)                     COMP
 JV6691  LAPLACE CORR    -          6.65  (seconds)                    DEFLEC18
 JV6691
 JV6691  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6691  Standards:
 JV6691         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6691            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6691  -------------------------------------------------------------------
 JV6691  NETWORK    2.09   2.70           0.96   0.71   1.38      0.06414395
 JV6691  -------------------------------------------------------------------
 JV6691  Click here for local accuracies and other accuracy information.
 JV6691
 JV6691.The horizontal coordinates were established by GPS observations
 JV6691.and adjusted by the National Geodetic Survey in June 2012.
 JV6691
 JV6691.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6691.been affixed to the stable North American tectonic plate. See 
 JV6691.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6691
 JV6691.The horizontal coordinates are valid at the epoch date displayed above
 JV6691.which is a decimal equivalence of Year/Month/Day.
 JV6691
 JV6691.The orthometric height was determined by GPS observations and a
 JV6691.high-resolution geoid model.
 JV6691
 JV6691.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6691.GEOID18 height accuracy estimate available here.
 JV6691
 JV6691.Click photographs - Photos may exist for this station.
 JV6691
 JV6691.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6691
 JV6691.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6691
 JV6691.The ellipsoidal height was determined by GPS observations
 JV6691.and is referenced to NAD 83.
 JV6691
 JV6691. The following values were computed from the NAD 83(2011) position.
 JV6691
 JV6691;                    North         East     Units Scale Factor Converg.
 JV6691;SPC MD       -   172,542.016   363,645.541   MT  0.99996788   -0 15 51.2
 JV6691;SPC MD       -   566,081.60  1,193,060.41   sFT  0.99996788   -0 15 51.2
 JV6691;UTM  18      - 4,344,012.681   291,000.908   MT  1.00013786   -1 31 52.9
 JV6691
 JV6691!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6691!SPC MD       -   0.99998734  x   0.99996788  =   0.99995522
 JV6691!UTM  18      -   0.99998734  x   1.00013786  =   1.00012520
 JV6691
 JV6691_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9100044012(NAD 83)
 JV6691
 JV6691                          SUPERSEDED SURVEY CONTROL
 JV6691
 JV6691  NAD 83(2007)-  39 13 12.94446(N)    077 25 15.57344(W) AD(2002.00) 0
 JV6691  ELLIP H (02/10/07)   80.750  (m)                       GP(2002.00)    
 JV6691  ELLIP H (08/30/02)   80.750  (m)                       GP(       ) 4 2
 JV6691  NAD 83(1993)-  39 13 12.94509(N)    077 25 15.57314(W) AD(       ) 1
 JV6691  ELLIP H (11/14/94)   80.723  (m)                       GP(       ) 4 2
 JV6691  NAD 83(1991)-  39 13 12.94379(N)    077 25 15.57202(W) AD(       ) 1
 JV6691  ELLIP H (01/27/92)   80.699  (m)                       GP(       ) 4 1
 JV6691  NAD 83(1986)-  39 13 12.94412(N)    077 25 15.58332(W) AD(       ) 1
 JV6691  NGVD 29             113.24   (m)          371.5    (f) LEVELING    3  
 JV6691
 JV6691.Superseded values are not recommended for survey control.
 JV6691
 JV6691.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6691.See file dsdata.pdf to determine how the superseded data were derived.
 JV6691
 JV6691_MARKER: DD = SURVEY DISK
 JV6691_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6691_STAMPING: 4979 19802
 JV6691_MARK LOGO: WSSC
 JV6691_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV6691_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6691+STABILITY: SURFACE MOTION
 JV6691_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6691+SATELLITE: SATELLITE OBSERVATIONS - March 21, 1994
 JV6691
 JV6691  HISTORY     - Date     Condition        Report By
 JV6691  HISTORY     - 1989     MONUMENTED       WSSC
 JV6691  HISTORY     - 19940321 GOOD             MSI
 JV6691  HISTORY     - 19950705 GOOD             USPSQD
 JV6691
 JV6691                          STATION DESCRIPTION
 JV6691
 JV6691'DESCRIBED BY WASH SUBURB SAN COMM 1989
 JV6691'THE STATION IS LOCATED ABOUT 4.8 KM (3.0 MI) NW OF BEALLSBILLE, 3.2 KM
 JV6691'(2.0 MI) WEST OF BARNESVILLE AND 6.4 KM (4.0 MI) SW OF COMUS. TO
 JV6691'REACH THE STATION FROM STATE RD RTE 28 (DICKERSON RD) AT THE CCX RR
 JV6691'BRIDGE IN DICKERSON. GO NORTH 30 M (98.4 FT) TO MT EPHRAIM RD, TURN
 JV6691'RIGHT AND GO EAST 0.3 KM (0.2 MI) TO STATION ON THE RIGHT AND 10 M
 JV6691'(32.8 FT) SOUTH OF THE CENTERLINE OF MT EPHRAIM RD. OWNERSHIP--ROAD
 JV6691'RIGHT-OF-WAY. THE STATION MARK IS A STANDARD WSSC BRASS DISK STAMPED
 JV6691'4979  19802 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M
 JV6691'(0.7 FT) IN DIAMETER SET FLUSH IN THE GRASS. IT IS 13.72 M
 JV6691'(45.01 FT) WEST OF THE NW CORNER OF A CONCRETE WALL, 26.82 M
 JV6691'(87.99 FT) NW OF THE SE CORNER OF A CONCRETE WALL, 16.53 M
 JV6691'(54.23 FT) NW OF A REFERENCE NAIL IN THE WEST SIDE OF PEPCO POLE
 JV6691'NUMBER F3332 AND 23.8 M (78.1 FT) EAST OF A REFERENCE NAIL IN THE
 JV6691'NORTH SIDE OF A PEPCO POLE NUMBER F440074. NO REFERENCES WERE
 JV6691'ESTABLISHED AT THIS TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS
 JV6691'STATION AT THIS TIME.
 JV6691
 JV6691                          STATION RECOVERY (1994)
 JV6691
 JV6691'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 JV6691'RECOVERED AS DESCRIBED BY MEASUREMENT SCIENCE, INC. (1994).
 JV6691
 JV6691                          STATION RECOVERY (1995)
 JV6691
 JV6691'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6691'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8970 ***********************************************************************
 HV8970  DESIGNATION -  BM 4983
 HV8970  PID         -  HV8970
 HV8970  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8970  COUNTRY     -  US
 HV8970  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8970
 HV8970                         *CURRENT SURVEY CONTROL
 HV8970  ______________________________________________________________________
 HV8970* NAD 83(2011) POSITION- 38 53 14.40800(N) 076 54 15.20134(W)   ADJUSTED
 HV8970* NAD 83(2011) ELLIP HT-     4.064 (meters)        (06/27/12)   ADJUSTED
 HV8970* NAD 83(2011) EPOCH   -  2010.00
 HV8970* NAVD 88 ORTHO HEIGHT -    36.43  (+/-2cm)      119.5   (feet) VERTCON3
 HV8970  ______________________________________________________________________
 HV8970  GEOID HEIGHT    -        -32.350 (meters)                     GEOID18
 HV8970  NAD 83(2011) X  -  1,126,370.350 (meters)                     COMP
 HV8970  NAD 83(2011) Y  - -4,841,904.646 (meters)                     COMP
 HV8970  NAD 83(2011) Z  -  3,982,591.784 (meters)                     COMP
 HV8970  LAPLACE CORR    -         -4.67  (seconds)                    DEFLEC18
 HV8970  VERT ORDER      -  THIRD ? (See Below)
 HV8970
 HV8970  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8970  Standards:
 HV8970         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8970            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8970  -------------------------------------------------------------------
 HV8970  NETWORK    0.94   2.00           0.40   0.37   1.02      0.08855183
 HV8970  -------------------------------------------------------------------
 HV8970  Click here for local accuracies and other accuracy information.
 HV8970
 HV8970.The horizontal coordinates were established by GPS observations
 HV8970.and adjusted by the National Geodetic Survey in June 2012.
 HV8970
 HV8970.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8970.been affixed to the stable North American tectonic plate. See 
 HV8970.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8970
 HV8970.The horizontal coordinates are valid at the epoch date displayed above
 HV8970.which is a decimal equivalence of Year/Month/Day.
 HV8970
 HV8970.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8970.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8970
 HV8970.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8970.GEOID18 height accuracy estimate available here.
 HV8970
 HV8970.The vertical order pertains to the NGVD 29 superseded value.
 HV8970
 HV8970.Click photographs - Photos may exist for this station.
 HV8970
 HV8970.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8970
 HV8970.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8970
 HV8970.The ellipsoidal height was determined by GPS observations
 HV8970.and is referenced to NAD 83.
 HV8970
 HV8970. The following values were computed from the NAD 83(2011) position.
 HV8970
 HV8970;                    North         East     Units Scale Factor Converg.
 HV8970;SPC MD       -   135,503.807   408,309.576   MT  0.99994987   +0 03 36.4
 HV8970;SPC MD       -   444,565.41  1,339,595.67   sFT  0.99994987   +0 03 36.4
 HV8970;UTM  18      - 4,305,997.538   334,842.342   MT  0.99993589   -1 11 44.6
 HV8970
 HV8970!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8970!SPC MD       -   0.99999936  x   0.99994987  =   0.99994923
 HV8970!UTM  18      -   0.99999936  x   0.99993589  =   0.99993525
 HV8970
 HV8970_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3484205997(NAD 83)
 HV8970
 HV8970                          SUPERSEDED SURVEY CONTROL
 HV8970
 HV8970  NAD 83(2007)-  38 53 14.40847(N)    076 54 15.20212(W) AD(2002.00) 0
 HV8970  ELLIP H (02/10/07)    4.075  (m)                       GP(2002.00)    
 HV8970  ELLIP H (08/30/02)    4.073  (m)                       GP(       ) 4 2
 HV8970  NAD 83(1993)-  38 53 14.40894(N)    076 54 15.20257(W) AD(       ) 1
 HV8970  ELLIP H (11/14/94)    4.042  (m)                       GP(       ) 4 2
 HV8970  NAD 83(1991)-  38 53 14.40897(N)    076 54 15.20278(W) AD(       ) 1
 HV8970  ELLIP H (01/27/92)    4.028  (m)                       GP(       ) 4 1
 HV8970  NAD 83(1986)-  38 53 14.40752(N)    076 54 15.21345(W) AD(       ) 1
 HV8970  NGVD 29              36.67   (m)          120.3    (f) LEVELING    3  
 HV8970
 HV8970.Superseded values are not recommended for survey control.
 HV8970
 HV8970.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8970.See file dsdata.pdf to determine how the superseded data were derived.
 HV8970
 HV8970_MARKER: DD = SURVEY DISK
 HV8970_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8970_STAMPING: 4983 19805
 HV8970_MARK LOGO: WSSC
 HV8970_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8970_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8970+STABILITY: SURFACE MOTION
 HV8970_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8970+SATELLITE: SATELLITE OBSERVATIONS - February 06, 2004
 HV8970
 HV8970  HISTORY     - Date     Condition        Report By
 HV8970  HISTORY     - 1989     MONUMENTED       WSSC
 HV8970  HISTORY     - 20001117 MARK NOT FOUND   GEOMET
 HV8970  HISTORY     - 20020517 GOOD             WR
 HV8970  HISTORY     - 20040206 GOOD             BOWMAN
 HV8970
 HV8970                          STATION DESCRIPTION
 HV8970
 HV8970'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8970'THE STATION IS LOCATED ABOUT 0.8 KM (0.5 MI) NE OF CAPITOR HEIGHTS,
 HV8970'2.4 KM (1.5 MI) SE OF FAIRMONT HEIGHTS, AND 3.7 KM (2.3 MI) NW
 HV8970'DISTRICT HEIGHTS. TO REACH THE STATION FROM THE INTERSECTION OF EAST
 HV8970'CAPITOL STREET AND SOUTHERN AVE AT THE MARYLAND AND WASHINGTON
 HV8970'DISTRICT OF COLUMBIA BOUNDARY LINE, GO ESE ON EAST CAPITOL ST 0.8 KM
 HV8970'(0.5 MI) TO THE STATION ON THE LEFT IN THE GRASS
 HV8970'MEDIAN. OWNERSHIP--STATE ROAD RIGHT-OF-WAY THE STATION MARK IS A
 HV8970'STANDARD WSSC BRASS DISK STAMPED 4983  19805 SETIN THE TOP OF A ROUND
 HV8970'CONCRETE MONUMENT 0.2 M (0.7 FT) IN DIAMETER SET FLUSH IN THE
 HV8970'GRASS. IT IS 16.63 M (54.56 FT) NE OF THE CENTERLINE OF A WATER
 HV8970'MANHOLE, 26.07 M (85.53 FT) WEST OF THE SW CORNER OF A THE IRON GRATE
 HV8970'OF A CATCH BASIN, AND 30.67 M (100.62 FT) ENE OF THE SE CORNER OF THE
 HV8970'IRON GRATE OF THE CATCH BASIN. NO REFERENCES WERE ESTABLISHED AT THIS
 HV8970'TIME. NO STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS
 HV8970'TIME.
 HV8970
 HV8970                          STATION RECOVERY (2000)
 HV8970
 HV8970'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (DAR)
 HV8970'MARK NOT FOUND.
 HV8970
 HV8970                          STATION RECOVERY (2002)
 HV8970
 HV8970'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (FL)
 HV8970'RECOVERED IN GOOD CONDITION.
 HV8970
 HV8970                          STATION RECOVERY (2004)
 HV8970
 HV8970'RECOVERY NOTE BY BOWMAN CONSULTING GROUP 2004 (PJT)
 HV8970'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8971 ***********************************************************************
 HV8971  DESIGNATION -  BM 4984
 HV8971  PID         -  HV8971
 HV8971  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8971  COUNTRY     -  US
 HV8971  USGS QUAD   -  BRISTOL (2016)
 HV8971
 HV8971                         *CURRENT SURVEY CONTROL
 HV8971  ______________________________________________________________________
 HV8971* NAD 83(2011) POSITION- 38 48 49.72231(N) 076 44 26.75002(W)   ADJUSTED
 HV8971* NAD 83(2011) ELLIP HT-   -16.138 (meters)        (06/27/12)   ADJUSTED
 HV8971* NAD 83(2011) EPOCH   -  2010.00
 HV8971* NAVD 88 ORTHO HEIGHT -    16.79  (+/-2cm)       55.1   (feet) VERTCON3
 HV8971  ______________________________________________________________________
 HV8971  GEOID HEIGHT    -        -32.959 (meters)                     GEOID18
 HV8971  NAD 83(2011) X  -  1,141,349.880 (meters)                     COMP
 HV8971  NAD 83(2011) Y  - -4,843,639.725 (meters)                     COMP
 HV8971  NAD 83(2011) Z  -  3,976,222.624 (meters)                     COMP
 HV8971  LAPLACE CORR    -         -5.89  (seconds)                    DEFLEC18
 HV8971  VERT ORDER      -  THIRD ? (See Below)
 HV8971
 HV8971  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8971  Standards:
 HV8971         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8971            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8971  -------------------------------------------------------------------
 HV8971  NETWORK    3.10   6.12           0.81   1.51   3.12      0.02715572
 HV8971  -------------------------------------------------------------------
 HV8971  Click here for local accuracies and other accuracy information.
 HV8971
 HV8971.The horizontal coordinates were established by GPS observations
 HV8971.and adjusted by the National Geodetic Survey in June 2012.
 HV8971
 HV8971.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8971.been affixed to the stable North American tectonic plate. See 
 HV8971.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8971
 HV8971.The horizontal coordinates are valid at the epoch date displayed above
 HV8971.which is a decimal equivalence of Year/Month/Day.
 HV8971
 HV8971.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8971.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8971
 HV8971.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8971.GEOID18 height accuracy estimate available here.
 HV8971
 HV8971.The vertical order pertains to the NGVD 29 superseded value.
 HV8971
 HV8971.Click photographs - Photos may exist for this station.
 HV8971
 HV8971.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8971
 HV8971.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8971
 HV8971.The ellipsoidal height was determined by GPS observations
 HV8971.and is referenced to NAD 83.
 HV8971
 HV8971. The following values were computed from the NAD 83(2011) position.
 HV8971
 HV8971;                    North         East     Units Scale Factor Converg.
 HV8971;SPC MD       -   127,369.753   422,514.281   MT  0.99995043   +0 09 45.7
 HV8971;SPC MD       -   417,878.93  1,386,198.94   sFT  0.99995043   +0 09 45.7
 HV8971;UTM  18      - 4,297,554.700   348,864.916   MT  0.99988128   -1 05 28.7
 HV8971
 HV8971!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8971!SPC MD       -   1.00000253  x   0.99995043  =   0.99995296
 HV8971!UTM  18      -   1.00000253  x   0.99988128  =   0.99988381
 HV8971
 HV8971_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4886497554(NAD 83)
 HV8971
 HV8971                          SUPERSEDED SURVEY CONTROL
 HV8971
 HV8971  NAD 83(2007)-  38 48 49.72265(N)    076 44 26.75077(W) AD(2002.00) 0
 HV8971  ELLIP H (02/10/07)  -16.109  (m)                       GP(2002.00)    
 HV8971  ELLIP H (08/30/02)  -16.109  (m)                       GP(       ) 4 2
 HV8971  NAD 83(1991)-  38 48 49.72266(N)    076 44 26.75084(W) AD(       ) 1
 HV8971  ELLIP H (01/27/92)  -16.153  (m)                       GP(       ) 4 1
 HV8971  NAD 83(1986)-  38 48 49.72105(N)    076 44 26.76156(W) AD(       ) 1
 HV8971  NGVD 29              17.03   (m)           55.9    (f) LEVELING    3  
 HV8971
 HV8971.Superseded values are not recommended for survey control.
 HV8971
 HV8971.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8971.See file dsdata.pdf to determine how the superseded data were derived.
 HV8971
 HV8971_MARKER: DD = SURVEY DISK
 HV8971_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8971_STAMPING: 4984  19816
 HV8971_MARK LOGO: WSSC
 HV8971_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8971_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8971+STABILITY: SURFACE MOTION
 HV8971_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8971+SATELLITE: SATELLITE OBSERVATIONS - August 23, 2016
 HV8971
 HV8971  HISTORY     - Date     Condition        Report By
 HV8971  HISTORY     - 1989     MONUMENTED       WSSC
 HV8971  HISTORY     - 20070719 GOOD             AMTHOM
 HV8971  HISTORY     - 20090617 GOOD             INDIV
 HV8971  HISTORY     - 20160823 GOOD             MDSHA
 HV8971
 HV8971                          STATION DESCRIPTION
 HV8971
 HV8971'DESCRIBED BY WASH SUBURB SAN COMM 1989
 HV8971'THE STATION IS LOCATED ABOUT 1.2 KM (0.7 MI) SE OF UPPER MARLBORO,
 HV8971'10.1 KM (6.3 MI) SOUTH OF BOWIE, AND 9.3 KM (5.8 MI) NE OF
 HV8971'ROSARYVILLE. TO REACH THE STATION FROM THE BRIDGE AT THE INTERSECTION
 HV8971'OF STATE RDS RT 4 (PENNSYLVANIA AVE) AND RT 301 (CRANE HWY) GO 0.2 KM
 HV8971'(0.1 MI) WEST ON RT 4 TO THE STATION ON THE LEFT ON THE SOUTH SIDE OF
 HV8971'RT 4 IN THE CENTERLINE IN THE GRASS MEDIAN. OWNERSHIP--STATE ROAD
 HV8971'RIGHT-OF-WAY THE STATION IS A STANDARD WSSC BRASS DISK STAMPED 4984
 HV8971'19816 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.2 M (0.7 FT) IN
 HV8971'DIAMETER SET FLUSH IN THE GRASS. IT IS 10.5 M (34.4 FT) WSW OF THE
 HV8971'NORTH WOOD POST OF A STATE ROAD SIGN AND 10.6 M (34.8 FT) WNW OF THE
 HV8971'SOUTH POST OF THE STATE ROAD SIGN. NO REFERENCES WERE ESTABLISHED AT
 HV8971'THIS TIME. NO STATIONS SERVE AS AZUMUTH MARKS FOR THIS STATION AT
 HV8971'THIS TIME.
 HV8971
 HV8971                          STATION RECOVERY (2007)
 HV8971
 HV8971'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 2007 (GS)
 HV8971'RECOVERED IN GOOD CONDITION.
 HV8971
 HV8971                          STATION RECOVERY (2009)
 HV8971
 HV8971'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2009 (WRA)
 HV8971'RECOVERED AS DESCRIBED
 HV8971'DESCRIPTION IS ADEQUATE
 HV8971
 HV8971                          STATION RECOVERY (2016)
 HV8971
 HV8971'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2016 (PRK)
 HV8971'STATE ROAD SIGN IN PREVIOUS DESCRIPTION HAS BEEN REMOVED. IT IS
 HV8971'LOCATED APPROXIMATELY 206 FT. EAST OF A WOOD END POST OF A GUARD RAIL
 HV8971'AND 11.5 FT. NORTH OF THE EDGE OF PAVEMENT OF THE RT. 4 SOUTHBOUND
 HV8971'LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7289 ***********************************************************************
 HV7289  DESIGNATION -  BM 8
 HV7289  PID         -  HV7289
 HV7289  STATE/COUNTY-  MD/CALVERT
 HV7289  COUNTRY     -  US
 HV7289  USGS QUAD   -  NORTH BEACH (2016)
 HV7289
 HV7289                         *CURRENT SURVEY CONTROL
 HV7289  ______________________________________________________________________
 HV7289* NAD 83(1993) POSITION- 38 39 16.56913(N) 076 31 41.46009(W)   ADJUSTED
 HV7289* NAVD 88 ORTHO HEIGHT -    29.73  (+/-2cm)       97.5   (feet) VERTCON3
 HV7289  ______________________________________________________________________
 HV7289  GEOID HEIGHT    -        -33.774 (meters)                     GEOID18
 HV7289  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV7289  HORZ ORDER      -  THIRD
 HV7289  VERT ORDER      -  THIRD ? (See Below)
 HV7289
 HV7289.The horizontal coordinates were established by classical geodetic methods
 HV7289.and adjusted by the National Geodetic Survey in November 1994.
 HV7289
 HV7289.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7289.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7289
 HV7289.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7289.GEOID18 height accuracy estimate available here.
 HV7289
 HV7289.The vertical order pertains to the NGVD 29 superseded value.
 HV7289
 HV7289.Click photographs - Photos may exist for this station.
 HV7289
 HV7289.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7289
 HV7289. The following values were computed from the NAD 83(1993) position.
 HV7289
 HV7289;                    North         East     Units Scale Factor Converg.
 HV7289;SPC MD       -   109,770.859   441,067.807   MT  0.99995726   +0 17 46.1
 HV7289;SPC MD       -   360,139.89  1,447,069.96   sFT  0.99995726   +0 17 46.1
 HV7289;UTM  18      - 4,279,556.391   367,027.480   MT  0.99981774   -0 57 16.8
 HV7289
 HV7289!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7289!SPC MD       -   1.00000064  x   0.99995726  =   0.99995790
 HV7289!UTM  18      -   1.00000064  x   0.99981774  =   0.99981838
 HV7289
 HV7289:                Primary Azimuth Mark                     Grid Az
 HV7289:SPC MD       -  SHARPS ISLAND LIGHTHOUSE                 097 03 08.1
 HV7289:UTM  18      -  SHARPS ISLAND LIGHTHOUSE                 098 18 11.0
 HV7289
 HV7289_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6702779556(NAD 83)
 HV7289
 HV7289|---------------------------------------------------------------------|
 HV7289| PID    Reference Object                     Distance      Geod. Az  |
 HV7289|                                                           dddmmss.s |
 HV7289| HV7268 WAVE 1944                            57.195 METERS 04533     |
 HV7289| HV7297 1                                    68.452 METERS 07731     |
 HV7289| HV6142 SHARPS ISLAND LIGHTHOUSE            APPROX.13.4 KM 0972054.2 |
 HV7289|---------------------------------------------------------------------|
 HV7289
 HV7289                          SUPERSEDED SURVEY CONTROL
 HV7289
 HV7289  NAD 83(1986)-  38 39 16.56693(N)    076 31 41.47357(W) AD(       ) 3
 HV7289  NAD 27      -  38 39 16.12700(N)    076 31 42.63500(W) AD(       ) 3
 HV7289  NGVD 29              29.97   (m)           98.3    (f) LEVELING    3  
 HV7289
 HV7289.Superseded values are not recommended for survey control.
 HV7289
 HV7289.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7289.See file dsdata.pdf to determine how the superseded data were derived.
 HV7289
 HV7289_MARKER: DB = BENCH MARK DISK
 HV7289_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HV7289_SP_SET: TRANSFORMER PLATFORM
 HV7289_STAMPING: NO 8 1960
 HV7289_MARK LOGO: CGS
 HV7289_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7289+STABILITY: SURFACE MOTION
 HV7289
 HV7289  HISTORY     - Date     Condition        Report By
 HV7289  HISTORY     - 1960     MONUMENTED       CGS
 HV7289
 HV7289                          STATION DESCRIPTION
 HV7289
 HV7289'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (WFD)
 HV7289'THE STATION IS ABOUT TWO MILES SOUTH OF CHESAPEAKE BEACH, MD., ON
 HV7289'PROPERTY OF THE NAVAL RESEARCH LABORATORY, CHESAPEAKE BEACH
 HV7289'ANNEX. IT IS 87-1/2 FEET SOUTH OF THE SOUTHWEST CORNER OF BUILDING
 HV7289'NO. 4, IN THE FENCE-ENCLOSED TRANSFORMER AREA.
 HV7289'
 HV7289'THE MARK, STAMPED NO 8 1960, IS A STANDARD BENCH MARK DISK, WITH A
 HV7289'CROSS AT THE CENTER, CEMENTED IN A DRILL HOLE IN THE NORTHEAST
 HV7289'CORNER OF THE CONCRETE TRANSFORMER PLATFORM.
 HV7289'
 HV7289'(NEW CONSTRUCTION IS SCHEDULED TO DESTROY EXISTING STATIONS WAVE
 HV7289'1944 AND BM NO 1 1944.  THEREAFTER, SHARPS ISLAND L. H. WILL
 HV7289'PROVIDE THE ONLY AZIMUTH.)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0401 ***********************************************************************
 HV0401  DESIGNATION -  BM MDGS RESET
 HV0401  PID         -  HV0401
 HV0401  STATE/COUNTY-  MD/ST MARYS
 HV0401  COUNTRY     -  US
 HV0401  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV0401
 HV0401                         *CURRENT SURVEY CONTROL
 HV0401  ______________________________________________________________________
 HV0401* NAD 83(1986) POSITION- 38 09 04.     (N) 076 23 37.     (W)   SCALED
 HV0401* NAVD 88 ORTHO HEIGHT -    25.03  (+/-2cm)       82.1   (feet) VERTCON3
 HV0401  ______________________________________________________________________
 HV0401  GEOID HEIGHT    -        -34.941 (meters)                     GEOID18
 HV0401  VERT ORDER      -  THIRD (See Below)
 HV0401
 HV0401.The horizontal coordinates were scaled from a map and have
 HV0401.an estimated accuracy of +/- 6 seconds.
 HV0401
 HV0401.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0401.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0401
 HV0401.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0401.GEOID18 height accuracy estimate available here.
 HV0401
 HV0401.The vertical order pertains to the NGVD 29 superseded value.
 HV0401
 HV0401.Click photographs - Photos may exist for this station.
 HV0401
 HV0401;                    North         East    Units  Estimated Accuracy
 HV0401;SPC MD       -    53,950.      453,150.      MT  (+/- 180 meters Scaled)
 HV0401
 HV0401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH778234(NAD 83)
 HV0401
 HV0401                          SUPERSEDED SURVEY CONTROL
 HV0401
 HV0401  NGVD 29 (??/??/??)   25.32   (m)           83.1    (f) RESET       3  
 HV0401
 HV0401.Superseded values are not recommended for survey control.
 HV0401
 HV0401.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0401.See file dsdata.pdf to determine how the superseded data were derived.
 HV0401
 HV0401_MARKER: DD = SURVEY DISK
 HV0401_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0401_STAMPING: MGS BM RESET 1966
 HV0401_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0401+STABILITY: SURFACE MOTION
 HV0401
 HV0401  HISTORY     - Date     Condition        Report By
 HV0401  HISTORY     - 1966     MONUMENTED       MDSRC
 HV0401  HISTORY     - 19901016 MARK NOT FOUND   NGS
 HV0401
 HV0401                          STATION DESCRIPTION
 HV0401
 HV0401'DESCRIBED BY MD STATE ROADS COMM 1966
 HV0401'0.1 MI S FROM ST INIGOES.
 HV0401'ABOUT 9.9 MILES NORTH ALONG STATE HIGHWAY 5 FROM THE LIGHTHOUSE
 HV0401'AT POINT LOOKOUT, 0.1 MILE SOUTH OF THE ST. INIGOES POST OFFICE
 HV0401'ALONG MARYLAND 5 ON THE RIGHT AT MR. ABELLS PROPERTY, WEST OF
 HV0401'THE CENTERLINE OF MD. 5, 29.2 FEET NORTH OF THE CENTERLINE OF MR.
 HV0401'ABELLS ENTRANCE.  98.5 FEET N.E. OF A POWER POLE, 130.0 FEET
 HV0401'EAST OF THE NORTHEAST CORNER OF THE 2 STORY FRAME HOUSE, 51.5
 HV0401'FEET EAST OF THE 15 IN CHERRY TREE, AND 5.5 FEET SOUTH OF THE
 HV0401'HEDGE ROW, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 HV0401'GROUND.
 HV0401
 HV0401                          STATION RECOVERY (1990)
 HV0401
 HV0401'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV0401'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1458 ***********************************************************************
 JV1458  DESIGNATION -  BM SCS
 JV1458  PID         -  JV1458
 JV1458  STATE/COUNTY-  MD/MONTGOMERY
 JV1458  COUNTRY     -  US
 JV1458  USGS QUAD   -  BELTSVILLE (2016)
 JV1458
 JV1458                         *CURRENT SURVEY CONTROL
 JV1458  ______________________________________________________________________
 JV1458* NAD 83(1986) POSITION- 39 03 23.     (N) 076 57 06.     (W)   SCALED
 JV1458* NAVD 88 ORTHO HEIGHT -    91.03  (+/-2cm)      298.7   (feet) VERTCON3
 JV1458  ______________________________________________________________________
 JV1458  GEOID HEIGHT    -        -32.060 (meters)                     GEOID18
 JV1458  VERT ORDER      -  ? (See Below)
 JV1458
 JV1458.The horizontal coordinates were scaled from a map and have
 JV1458.an estimated accuracy of +/- 6 seconds.
 JV1458
 JV1458.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1458.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1458
 JV1458.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1458.GEOID18 height accuracy estimate available here.
 JV1458
 JV1458.The vertical order pertains to the NGVD 29 superseded value.
 JV1458
 JV1458.Click photographs - Photos may exist for this station.
 JV1458
 JV1458;                    North         East    Units  Estimated Accuracy
 JV1458;SPC MD       -   154,270.      404,180.      MT  (+/- 180 meters Scaled)
 JV1458
 JV1458_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ311248(NAD 83)
 JV1458
 JV1458                          SUPERSEDED SURVEY CONTROL
 JV1458
 JV1458  NGVD 29 (11/26/84)   91.246  (m)          299.36   (f) ADJUSTED       
 JV1458
 JV1458.Superseded values are not recommended for survey control.
 JV1458
 JV1458.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1458.See file dsdata.pdf to determine how the superseded data were derived.
 JV1458
 JV1458_MARKER: DD = SURVEY DISK
 JV1458_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1458_SP_SET: DAM WALL
 JV1458_MARK LOGO: SCS
 JV1458_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1458+STABILITY: SURFACE MOTION
 JV1458
 JV1458  HISTORY     - Date     Condition        Report By
 JV1458  HISTORY     - UNK      MONUMENTED       SCS
 JV1458  HISTORY     - 1952     GOOD             CGS
 JV1458
 JV1458                          STATION DESCRIPTION
 JV1458
 JV1458'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV1458'2 MI SE FROM FAIRLAND.
 JV1458'ABOUT 1.0 MILE SOUTHWEST ALONG COLUMBIA ROAD (STATE HIGHWAY 196)
 JV1458'FROM THE JUNCTION OF FAIRLAND ROAD AT FAIRLAND, MONTGOMERY
 JV1458'COUNTY, THENCE ABOUT 1.0 MILE EAST ALONG BELTSVILLE ROAD, THENCE
 JV1458'80 YARDS SOUTH ALONG CHERRY HILL ROAD, THENCE 65 YARDS WEST ALONG
 JV1458'THE EDGE OF A WOODS, AT A V-SHAPED DAM (THE EAST ONE OF TWO
 JV1458'V-SHAPED DAMS), AT THE WEST END, AND 6-1/4 FEET FROM THE NEAREST
 JV1458'CORNER OF A GAGE HOUSE.  A BRONZE U.S.D.A. SOIL CONSERVATION
 JV1458'SERVICE DISK NOT STAMPED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4144 ***********************************************************************
 JU4144  DESIGNATION -  BNDRY ARC STONE 1 DE MD RESET
 JU4144  PID         -  JU4144
 JU4144  STATE/COUNTY-  MD/CECIL
 JU4144  COUNTRY     -  US
 JU4144  USGS QUAD   -  NEWARK WEST (2016)
 JU4144
 JU4144                         *CURRENT SURVEY CONTROL
 JU4144  ______________________________________________________________________
 JU4144* NAD 83(1991) POSITION- 39 39 15.22818(N) 075 47 20.00590(W)   NO CHECK
 JU4144* NAVD 88 ORTHO HEIGHT -    40.3   (meters)      132.    (feet) VERTCON3
 JU4144  ______________________________________________________________________
 JU4144  GEOID HEIGHT    -        -33.049 (meters)                     GEOID18
 JU4144  LAPLACE CORR    -          1.47  (seconds)                    DEFLEC18
 JU4144  HORZ ORDER      -  SECOND
 JU4144
 JU4144.The horizontal coordinates were established by classical geodetic methods
 JU4144.and adjusted by the National Geodetic Survey in January 1992.
 JU4144
 JU4144.No horizontal observational check was made to the station.
 JU4144
 JU4144.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU4144.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU4144
 JU4144.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4144.GEOID18 height accuracy estimate available here.
 JU4144
 JU4144.Click photographs - Photos may exist for this station.
 JU4144
 JU4144.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4144
 JU4144. The following values were computed from the NAD 83(1991) position.
 JU4144
 JU4144;                    North         East     Units Scale Factor Converg.
 JU4144;SPC MD       -   221,328.467   503,942.386   MT  1.00004211   +0 45 36.5
 JU4144;SPC MD       -   726,141.81  1,653,350.98   sFT  1.00004211   +0 45 36.5
 JU4144;SPC PA S     -    37,499.881   768,303.798   MT  1.00005536   +1 16 20.5
 JU4144;SPC PA S     -   123,030.86  2,520,676.71   sFT  1.00005536   +1 16 20.5
 JU4144;UTM  18      - 4,389,678.624   432,321.722   MT  0.99965639   -0 30 12.4
 JU4144
 JU4144!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4144!SPC MD       -   0.99999886  x   1.00004211  =   1.00004097
 JU4144!SPC PA S     -   0.99999886  x   1.00005536  =   1.00005422
 JU4144!UTM  18      -   0.99999886  x   0.99965639  =   0.99965525
 JU4144
 JU4144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3232189678(NAD 83)
 JU4144
 JU4144                          SUPERSEDED SURVEY CONTROL
 JU4144
 JU4144  NAD 83(1986)-  39 39 15.22247(N)    075 47 20.01261(W) AD(       ) 2
 JU4144  NGVD 29 (02/12/91)   40.7    (m)          134.     (f) VERT ANG       
 JU4144
 JU4144.Superseded values are not recommended for survey control.
 JU4144
 JU4144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4144.See file dsdata.pdf to determine how the superseded data were derived.
 JU4144
 JU4144_MARKER: 71 = BOUNDARY MONUMENT
 JU4144_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JU4144_SP_SET: BURIED IN GROUND
 JU4144_MARK LOGO: NGS
 JU4144_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4144_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4144_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4144+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2010
 JU4144
 JU4144  HISTORY     - Date     Condition        Report By
 JU4144  HISTORY     - 1984     FIRST OBSERVED   NGS
 JU4144  HISTORY     - 20100925 GOOD             GEOCAC
 JU4144
 JU4144                          STATION DESCRIPTION
 JU4144
 JU4144'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JU4144'THE STATION IS LOCATED ABOUT 7.25 KM (4.50 MI) SOUTH OF THE
 JU4144'MARYLAND-DELAWARE-PENNSYLVANIA STATE LINE, 6.4 KM (4.00 MI) NORTHEAST
 JU4144'OF ELKTON, MARYLAND, 4.4 KM (2.75 MI) SOUTHWEST OF NEWARK DELAWARE AND
 JU4144'NEAR A POINT WHERE STATE HIGHWAY 277 JUNCTIONS WITH HIGHWAYS 2 AND
 JU4144'279.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JU4144'THE LOCATION OF THIS MARKER ALSO SERVES AS A TO REACH.
 JU4144'THE STATION IS THE TOP AND CENTER OF THE OLD MASON-DIXON BOUNDARY
 JU4144'MONUMENT WHICH IS 0.77 M (2.5 FT) BELOW THE SURFACE OF THE SOUTHWEST
 JU4144'BOUND LANE OF THE HIGHWAY.  IT IS 1.1 M (3.6 FT) SOUTHEAST OF THE
 JU4144'CENTER OF THE SOUTHWEST BOUND LANE OF THE HIGHWAY, 23.76 M (78.0 FT)
 JU4144'NORTHWEST OF THE CENTER OF THE NORTHEAST BOUND LANE OF THE HIGHWAY,
 JU4144'12.0 M (39.4 FT) SOUTHEAST OF A POWERLINE POLE NUMBERED 116, 29.65 M
 JU4144'(97.3 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF A LIQUOR STORE AND 49.3
 JU4144'M (161.7 FT) NORTHEAST OF THE INTERSECTION OF STATE HIGHWAYS 2,277 AND
 JU4144'279.
 JU4144
 JU4144                          STATION RECOVERY (2010)
 JU4144
 JU4144'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU4144'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3586 ***********************************************************************
 JU3586  DESIGNATION -  BO 1898
 JU3586  PID         -  JU3586
 JU3586  STATE/COUNTY-  MD/CECIL
 JU3586  COUNTRY     -  US
 JU3586  USGS QUAD   -  EARLEVILLE (2016)
 JU3586
 JU3586                         *CURRENT SURVEY CONTROL
 JU3586  ______________________________________________________________________
 JU3586* NAD 83(1991) POSITION- 39 29 07.85139(N) 075 55 23.08588(W)   ADJUSTED
 JU3586* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3586  ______________________________________________________________________
 JU3586  GEOID HEIGHT    -        -33.345 (meters)                     GEOID18
 JU3586  LAPLACE CORR    -         -0.81  (seconds)                    DEFLEC18
 JU3586  HORZ ORDER      -  THIRD
 JU3586
 JU3586.The horizontal coordinates were established by classical geodetic methods
 JU3586.and adjusted by the National Geodetic Survey in January 1992.
 JU3586
 JU3586.The orthometric height was scaled from a topographic map.
 JU3586
 JU3586.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3586.GEOID18 height accuracy estimate available here.
 JU3586
 JU3586.Click photographs - Photos may exist for this station.
 JU3586
 JU3586.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3586
 JU3586. The following values were computed from the NAD 83(1991) position.
 JU3586
 JU3586;                    North         East     Units Scale Factor Converg.
 JU3586;SPC MD       -   202,453.103   492,647.291   MT  1.00000641   +0 40 33.3
 JU3586;SPC MD       -   664,214.89  1,616,293.65   sFT  1.00000641   +0 40 33.3
 JU3586;UTM  18      - 4,371,063.515   420,617.406   MT  0.99967758   -0 35 13.2
 JU3586
 JU3586!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3586!SPC MD       -   1.00000527  x   1.00000641  =   1.00001168
 JU3586!UTM  18      -   1.00000527  x   0.99967758  =   0.99968285
 JU3586
 JU3586:                Primary Azimuth Mark                     Grid Az
 JU3586:SPC MD       -  MIA 1898                                 123 24 18.0
 JU3586:UTM  18      -  MIA 1898                                 124 40 04.5
 JU3586
 JU3586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2061771063(NAD 83)
 JU3586
 JU3586|---------------------------------------------------------------------|
 JU3586| PID    Reference Object                     Distance      Geod. Az  |
 JU3586|                                                           dddmmss.s |
 JU3586| JU3593 MIA 1898                            APPROX. 1.9 KM 1240451.3 |
 JU3586|---------------------------------------------------------------------|
 JU3586
 JU3586                          SUPERSEDED SURVEY CONTROL
 JU3586
 JU3586  NAD 83(1986)-  39 29 07.84321(N)    075 55 23.09167(W) AD(       ) 3
 JU3586  NAD 27      -  39 29 07.44800(N)    075 55 24.30200(W) AD(       ) 3
 JU3586  USSD        -  39 29 07.82600(N)    075 55 24.13300(W) AD(       ) 3
 JU3586
 JU3586.Superseded values are not recommended for survey control.
 JU3586
 JU3586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3586.See file dsdata.pdf to determine how the superseded data were derived.
 JU3586
 JU3586
 JU3586  HISTORY     - Date     Condition        Report By
 JU3586  HISTORY     - 1898     MONUMENTED       CGS
 JU3586  HISTORY     - 1902     SEE DESCRIPTION  CGS
 JU3586
 JU3586                          STATION DESCRIPTION
 JU3586
 JU3586'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 JU3586'ON POINT AT N SIDE OF MOUTH OF BOHEMIA RIVER, AT HIGH-WATER
 JU3586'MARK.  MARKED BY A BOX 3 BY 3 INCHES AND 3 FEET DEEP.  BOX MAY
 JU3586'HAVE BEEN FILLED WITH CEMENT WITH NAIL IN TOP TO MARK CENTER, BUT
 JU3586'THIS IS UNCERTAIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7980 ***********************************************************************
 AJ7980  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7980  DESIGNATION -  BOAL
 AJ7980  PID         -  AJ7980
 AJ7980  STATE/COUNTY-  MD/ALLEGANY
 AJ7980  COUNTRY     -  US
 AJ7980  USGS QUAD   -  WESTERNPORT (2016)
 AJ7980
 AJ7980                         *CURRENT SURVEY CONTROL
 AJ7980  ______________________________________________________________________
 AJ7980* NAD 83(2011) POSITION- 39 29 01.15094(N) 079 02 42.15240(W)   ADJUSTED
 AJ7980* NAD 83(2011) ELLIP HT-   246.109 (meters)        (06/27/12)   ADJUSTED
 AJ7980* NAD 83(2011) EPOCH   -  2010.00
 AJ7980* NAVD 88 ORTHO HEIGHT -   278.146 (meters)      912.55  (feet) ADJUSTED
 AJ7980  ______________________________________________________________________
 AJ7980  GEOID HEIGHT    -        -32.018 (meters)                     GEOID18
 AJ7980  NAD 83(2011) X  -    936,798.105 (meters)                     COMP
 AJ7980  NAD 83(2011) Y  - -4,839,718.300 (meters)                     COMP
 AJ7980  NAD 83(2011) Z  -  4,034,059.409 (meters)                     COMP
 AJ7980  LAPLACE CORR    -         -5.66  (seconds)                    DEFLEC18
 AJ7980  DYNAMIC HEIGHT  -        277.958 (meters)      911.93  (feet) COMP
 AJ7980  MODELED GRAVITY -    979,947.0   (mgal)                       NAVD 88
 AJ7980
 AJ7980  VERT ORDER      -  SECOND    CLASS I
 AJ7980
 AJ7980  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7980  Standards:
 AJ7980         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7980            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7980  -------------------------------------------------------------------
 AJ7980  NETWORK    0.81   1.39           0.34   0.32   0.71      0.19173118
 AJ7980  -------------------------------------------------------------------
 AJ7980  Click here for local accuracies and other accuracy information.
 AJ7980
 AJ7980.The horizontal coordinates were established by GPS observations
 AJ7980.and adjusted by the National Geodetic Survey in June 2012.
 AJ7980
 AJ7980.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7980.been affixed to the stable North American tectonic plate. See 
 AJ7980.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7980
 AJ7980.The horizontal coordinates are valid at the epoch date displayed above
 AJ7980.which is a decimal equivalence of Year/Month/Day.
 AJ7980
 AJ7980.The orthometric height was determined by differential leveling and
 AJ7980.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7980.in November 2003.
 AJ7980
 AJ7980.No vertical observational check was made to the station.
 AJ7980
 AJ7980.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7980.GEOID18 height accuracy estimate available here.
 AJ7980
 AJ7980.Click photographs - Photos may exist for this station.
 AJ7980
 AJ7980.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7980
 AJ7980.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7980
 AJ7980.The ellipsoidal height was determined by GPS observations
 AJ7980.and is referenced to NAD 83.
 AJ7980
 AJ7980.The dynamic height is computed by dividing the NAVD 88
 AJ7980.geopotential number by the normal gravity value computed on the
 AJ7980.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7980.degrees latitude (g = 980.6199 gals.).
 AJ7980
 AJ7980.The modeled gravity was interpolated from observed gravity values.
 AJ7980
 AJ7980. The following values were computed from the NAD 83(2011) position.
 AJ7980
 AJ7980;                    North         East     Units Scale Factor Converg.
 AJ7980;SPC MD       -   203,670.634   224,071.369   MT  1.00000606   -1 17 00.7
 AJ7980;SPC MD       -   668,209.41    735,140.82   sFT  1.00000606   -1 17 00.7
 AJ7980;UTM  17      - 4,372,274.570   668,131.015   MT  0.99994805   +1 14 36.1
 AJ7980
 AJ7980!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7980!SPC MD       -   0.99996139  x   1.00000606  =   0.99996745
 AJ7980!UTM  17      -   0.99996139  x   0.99994805  =   0.99990944
 AJ7980
 AJ7980_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD6813172274(NAD 83)
 AJ7980
 AJ7980                          SUPERSEDED SURVEY CONTROL
 AJ7980
 AJ7980  NAD 83(2007)-  39 29 01.15111(N)    079 02 42.15311(W) AD(2002.00) 0
 AJ7980  ELLIP H (02/10/07)  246.129  (m)                       GP(2002.00)    
 AJ7980  NAD 83(1991)-  39 29 01.15121(N)    079 02 42.15329(W) AD(       ) A
 AJ7980  ELLIP H (02/12/02)  246.130  (m)                       GP(       ) 4 1
 AJ7980  NAVD 88 (02/12/02)  278.1    (m)  GEOID99  model used  GPS OBS        
 AJ7980
 AJ7980.Superseded values are not recommended for survey control.
 AJ7980
 AJ7980.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7980.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7980
 AJ7980_MARKER: DD = SURVEY DISK
 AJ7980_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AJ7980_SP_SET: CURB
 AJ7980_STAMPING: BOAL 1992
 AJ7980_MARK LOGO: MDSHA
 AJ7980_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ7980_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AJ7980_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7980+SATELLITE: SATELLITE OBSERVATIONS - February 22, 2002
 AJ7980
 AJ7980  HISTORY     - Date     Condition        Report By
 AJ7980  HISTORY     - 1992     MONUMENTED       MDSHA
 AJ7980  HISTORY     - 20000327 GOOD             MDSHA
 AJ7980  HISTORY     - 20020222 GOOD             MDSHA
 AJ7980
 AJ7980                          STATION DESCRIPTION
 AJ7980
 AJ7980'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7980'THE STATION IS LOCATED ABOUT 19.0 MILES (30.6 KM) SOUTHWEST OF
 AJ7980'CUMBERLAND, 5.0 MILES (8.0 KM) NORTHWEST OF MCCOOLE, AND IN THE TOWN
 AJ7980'OF WESTERPORT.  TO REACH THE STATION FROM THE INTERSECTION OF MARYLAND
 AJ7980'HIGHWAY 135 AND MARYLAND HIGHWAY 36, GO SOUTHEAST ALONG MARYLAND
 AJ7980'HIGHWAY 135 FOR 0.5 MILES (0.8 KM) TO THE STATION ON THE RIGHT.  THE
 AJ7980'STATION IS A STANDARD MARYLAND STATE HIGHWAY SURVEY DISK SET IN A
 AJ7980'CONCRETE CURB ALONG THE SOUTH SIDE OF MARYLAND HIGHWAY 135. IT IS 21.6
 AJ7980'FEET (6.6 M) WEST OF THE NORTHWEST CORNER OF A CONCRETE BASE OF A BUS
 AJ7980'STOP, 54.9 FEET (16.7 M) EAST OF C-P WVA POLE 7, 30.6 FEET (9.3 M)
 AJ7980'NORTHEAST OF THE NORTHEAST RAIL OF THE WESTERN MARYLAND RAILROAD
 AJ7980'TRACKS, AND 21.4 FEET (6.5 M) SOUTH OF THE CENTER LINE OF THE HIGHWAY.
 AJ7980
 AJ7980                          STATION RECOVERY (2002)
 AJ7980
 AJ7980'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 AJ7980'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8203 ***********************************************************************
 DH8203  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8203  DESIGNATION -  BOAT RAMP
 DH8203  PID         -  DH8203
 DH8203  STATE/COUNTY-  MD/DORCHESTER
 DH8203  COUNTRY     -  US
 DH8203  USGS QUAD   -  GOLDEN HILL (2016)
 DH8203
 DH8203                         *CURRENT SURVEY CONTROL
 DH8203  ______________________________________________________________________
 DH8203* NAD 83(2011) POSITION- 38 26 23.76748(N) 076 08 42.50165(W)   ADJUSTED
 DH8203* NAD 83(2011) ELLIP HT-   -34.144 (meters)        (06/27/12)   ADJUSTED
 DH8203* NAD 83(2011) EPOCH   -  2010.00
 DH8203* NAVD 88 ORTHO HEIGHT -     0.97  (meters)        3.2   (feet) GPS OBS
 DH8203  ______________________________________________________________________
 DH8203  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8203  GEOID HEIGHT    -        -35.086 (meters)                     GEOID03
 DH8203  GEOID HEIGHT    -        -35.123 (meters)                     GEOID18
 DH8203  NAD 83(2011) X  -  1,197,840.578 (meters)                     COMP
 DH8203  NAD 83(2011) Y  - -4,856,653.936 (meters)                     COMP
 DH8203  NAD 83(2011) Z  -  3,943,787.958 (meters)                     COMP
 DH8203  LAPLACE CORR    -         -4.11  (seconds)                    DEFLEC18
 DH8203
 DH8203  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8203  Standards:
 DH8203         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8203            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8203  -------------------------------------------------------------------
 DH8203  NETWORK    0.84   1.84           0.37   0.31   0.94      0.07536655
 DH8203  -------------------------------------------------------------------
 DH8203  Click here for local accuracies and other accuracy information.
 DH8203
 DH8203.The horizontal coordinates were established by GPS observations
 DH8203.and adjusted by the National Geodetic Survey in June 2012.
 DH8203
 DH8203.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8203.been affixed to the stable North American tectonic plate. See 
 DH8203.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8203
 DH8203.The horizontal coordinates are valid at the epoch date displayed above
 DH8203.which is a decimal equivalence of Year/Month/Day.
 DH8203
 DH8203.The orthometric height was determined by GPS observations and a
 DH8203.high-resolution geoid model using precise GPS observation and
 DH8203.processing techniques.
 DH8203
 DH8203.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8203.GEOID18 height accuracy estimate available here.
 DH8203
 DH8203.Click photographs - Photos may exist for this station.
 DH8203
 DH8203.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8203
 DH8203.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8203
 DH8203.The ellipsoidal height was determined by GPS observations
 DH8203.and is referenced to NAD 83.
 DH8203
 DH8203. The following values were computed from the NAD 83(2011) position.
 DH8203
 DH8203;                    North         East     Units Scale Factor Converg.
 DH8203;SPC MD       -    86,185.439   474,631.059   MT  0.99997860   +0 32 11.5
 DH8203;SPC MD       -   282,760.06  1,557,185.40   sFT  0.99997860   +0 32 11.5
 DH8203;UTM  18      - 4,255,249.535   400,061.890   MT  0.99972300   -0 42 43.1
 DH8203
 DH8203!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8203!SPC MD       -   1.00000536  x   0.99997860  =   0.99998396
 DH8203!UTM  18      -   1.00000536  x   0.99972300  =   0.99972836
 DH8203
 DH8203_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0006155249(NAD 83)
 DH8203
 DH8203                          SUPERSEDED SURVEY CONTROL
 DH8203
 DH8203  NAD 83(2007)-  38 26 23.76768(N)    076 08 42.50255(W) AD(2002.00) B
 DH8203  ELLIP H (02/12/09)  -34.124  (m)                       GP(2002.00) 5 1
 DH8203  NAD 83(1991)-  38 26 23.76787(N)    076 08 42.50221(W) AD(       ) B
 DH8203  ELLIP H (02/28/06)  -34.122  (m)                       GP(       ) 5 1
 DH8203
 DH8203.Superseded values are not recommended for survey control.
 DH8203
 DH8203.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8203.See file dsdata.pdf to determine how the superseded data were derived.
 DH8203
 DH8203_MARKER: F = FLANGE-ENCASED ROD
 DH8203_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DH8203_STAMPING: BOAT RAMP 2005
 DH8203_MARK LOGO: NONE
 DH8203_PROJECTION: RECESSED 4 CENTIMETERS
 DH8203_MAGNETIC: I = MARKER IS A STEEL ROD
 DH8203_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH8203_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8203+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2014
 DH8203_ROD/PIPE-DEPTH: 25.0 meters
 DH8203_SLEEVE-DEPTH  : 0.5 meters
 DH8203
 DH8203  HISTORY     - Date     Condition        Report By
 DH8203  HISTORY     - 20050906 MONUMENTED       NGS
 DH8203  HISTORY     - 20100629 GOOD             NGS
 DH8203  HISTORY     - 20140208 GOOD             ARCSHE
 DH8203
 DH8203                          STATION DESCRIPTION
 DH8203
 DH8203'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (FCM)
 DH8203'MARK IS BELIEVED TO BE ON PROPERTY OF BLACKWATER NATIONAL WILDLIFE
 DH8203'REFUGE, 0.1 MILE  NORTH OF THE NE END OF STATE ROUTE 335 BRIDGE OVER
 DH8203'BLACKWATER RIVER, AT THE NW CORNER  OF THE ASPHALT PARKING AREA FOR
 DH8203'THE BOAT RAMP.
 DH8203'
 DH8203'THE MARK IS TOP CENTER OF A STAINLESS STEEL ROD UNDER A LOGO CAP WITH
 DH8203'NO AGENCY ID,  WITHIN A 6-INCH PVC PIPE THAT IS SURROUNDED BY CONCRETE
 DH8203'COLLAR. IT IS 48.5 FT WEST OF  CENTERLINE OF TWO-LANE RT 335, 44.5 FT
 DH8203'SW OF A POWER POLE, 27.5 FT WSW OF A REFUGE  BOUNDARY SIGN, 7.3 FT
 DH8203'EAST OF 1-INCH PVC PIPE PROJECTING 6 FT AT EDGE OF MARSH, 2.5 FT NW OF
 DH8203'NW CORNER OF PAVEMENT. THE PARKING AREA IS ABOUT 240 FT LONG N-S AND
 DH8203'35 FT WIDE E-W.
 DH8203'
 DH8203'THE LOGO CAP IS ABOUT 0.5 FT BELOW THE PAVEMENT. THE ROD WAS DRIVEN 82
 DH8203'FT TO REFUSAL. THE  ACCESS CAP IS HELD ON BY A SLOTTED-HEAD SCREW
 DH8203'UNLESS THE SCREW GETS LOST.
 DH8203
 DH8203                          STATION RECOVERY (2010)
 DH8203
 DH8203'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DLA)
 DH8203'RECOVERED IN GOOD CONDITION.
 DH8203
 DH8203                          STATION RECOVERY (2014)
 DH8203
 DH8203'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 DH8203'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6198 ***********************************************************************
 HV6198  DESIGNATION -  BODKIN
 HV6198  PID         -  HV6198
 HV6198  STATE/COUNTY-  MD/QUEEN ANNES
 HV6198  COUNTRY     -  US
 HV6198  USGS QUAD   -  KENT ISLAND (2016)
 HV6198
 HV6198                         *CURRENT SURVEY CONTROL
 HV6198  ______________________________________________________________________
 HV6198* NAD 83(1991) POSITION- 38 53 47.35834(N) 076 16 51.81223(W)   ADJUSTED
 HV6198* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6198  ______________________________________________________________________
 HV6198  GEOID HEIGHT    -        -33.892 (meters)                     GEOID18
 HV6198  LAPLACE CORR    -         -4.69  (seconds)                    DEFLEC18
 HV6198  HORZ ORDER      -  SECOND
 HV6198
 HV6198.The horizontal coordinates were established by classical geodetic methods
 HV6198.and adjusted by the National Geodetic Survey in January 1992.
 HV6198
 HV6198.The orthometric height was scaled from a topographic map.
 HV6198
 HV6198.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6198.GEOID18 height accuracy estimate available here.
 HV6198
 HV6198.Click photographs - Photos may exist for this station.
 HV6198
 HV6198.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6198
 HV6198. The following values were computed from the NAD 83(1991) position.
 HV6198
 HV6198;                    North         East     Units Scale Factor Converg.
 HV6198;SPC MD       -   136,761.072   462,366.150   MT  0.99994991   +0 27 04.4
 HV6198;SPC MD       -   448,690.28  1,516,946.28   sFT  0.99994991   +0 27 04.4
 HV6198;UTM  18      - 4,306,069.802   388,907.433   MT  0.99975197   -0 48 16.1
 HV6198
 HV6198!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6198!SPC MD       -   1.00000535  x   0.99994991  =   0.99995526
 HV6198!UTM  18      -   1.00000535  x   0.99975197  =   0.99975732
 HV6198
 HV6198:                Primary Azimuth Mark                     Grid Az
 HV6198:SPC MD       -  BANK                                     228 35 59.8
 HV6198:UTM  18      -  BANK                                     229 51 20.3
 HV6198
 HV6198_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8890706069(NAD 83)
 HV6198
 HV6198|---------------------------------------------------------------------|
 HV6198| PID    Reference Object                     Distance      Geod. Az  |
 HV6198|                                                           dddmmss.s |
 HV6198| CX2107 BODKIN RM 2                          14.050 METERS 07251     |
 HV6198| HV6257 RICH NECK MANOR SMALL TANK          APPROX. 4.8 KM 1585800.8 |
 HV6198| HV6250 RICH NECK MANOR LARGE TANK          APPROX. 5.8 KM 1702538.8 |
 HV6198| HV6282 CLAIBORNE EPISCOPAL CH STEEPLE      APPROX. 6.8 KM 1751506.2 |
 HV6198| HV6278 CLAIBORNE COVE BEACON               APPROX. 6.8 KM 1853557.3 |
 HV6198| HV6267 BANK                                APPROX. 6.6 KM 2290304.2 |
 HV6198| CX2106 BODKIN RM 1                          15.145 METERS 33106     |
 HV6198|---------------------------------------------------------------------|
 HV6198
 HV6198                          SUPERSEDED SURVEY CONTROL
 HV6198
 HV6198  NAD 83(1986)-  38 53 47.35423(N)    076 16 51.82494(W) AD(       ) 2
 HV6198  NAD 27      -  38 53 46.93700(N)    076 16 53.00300(W) AD(       ) 2
 HV6198
 HV6198.Superseded values are not recommended for survey control.
 HV6198
 HV6198.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6198.See file dsdata.pdf to determine how the superseded data were derived.
 HV6198
 HV6198_MARKER: DS = TRIANGULATION STATION DISK
 HV6198_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6198_STAMPING: BODKIN 1933
 HV6198_MARK LOGO: CGS
 HV6198_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6198
 HV6198  HISTORY     - Date     Condition        Report By
 HV6198  HISTORY     - 1933     MONUMENTED       CGS
 HV6198  HISTORY     - 1938     GOOD             CGS
 HV6198  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6198  HISTORY     - 1975     MARK NOT FOUND   MDDNR
 HV6198
 HV6198                          STATION DESCRIPTION
 HV6198
 HV6198'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (ERM)
 HV6198'STATION IS LOCATED ON THE HIGH BANK AT THE MOST SOUTHERLY POINT
 HV6198'OF BODKIN ISLAND IN EASTERN BAY, 21.9 METERS FROM THE S BANK,
 HV6198'34.6 METERS FROM THE W BANK, IN A GROUP OF TALL PINE TREES.  ALL
 HV6198'POINTS OBSERVED CAN BE SEEN FROM THE GROUND AFTER CLEARING, BUT A
 HV6198'12-FOOT TRIPOD WAS USED TO SHOW TARGET TO THE OTHER STATION
 HV6198'BETTER THROUGH THE TREES.
 HV6198'
 HV6198'STATION MARK IS A STANDARD BRONZE DISK IN A TILE.
 HV6198'
 HV6198'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE.
 HV6198'
 HV6198'ALL MARKS ARE IN SOLID GROUND, REFERENCE MARK NO.1 TO THE
 HV6198'NORTHWARD, AND REFERENCE MARK NO.2 TO THE EASTWARD OF THE STATION.
 HV6198'
 HV6198'STATION CAN BE REACHED ONLY BY BOAT.
 HV6198'
 HV6198'THIS STATION IS NOT TO BE OCCUPIED WITHOUT THE WRITTEN CONSENT
 HV6198'OF THE SEVEN ISLAND DUCK CLUB OF PHILADELPHIA.  COMMUNICATE WITH
 HV6198'MR. ANDREW R. MC COWN, 1900 GIRARD TRUST BUILDING, BROAD STREET
 HV6198'AND SOUTH PENN SQUARE, PHILADELPHIA.
 HV6198
 HV6198                          STATION RECOVERY (1938)
 HV6198
 HV6198'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV6198'STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD
 HV6198'CONDITION.  STATION IS ON THE MOST SOUTHERLY POINT OF BODKIN
 HV6198'ISLAND IN A PINE WOOD JUST BACK FROM AN 8-FOOT BLUFF AT HIGH-WATER
 HV6198'LINE.  STATION IS 15.8 METERS N OF HIGH WATER AND 27.2 METERS E OF
 HV6198'HIGH WATER.
 HV6198'
 HV6198'STATION IS MARKED BY A STANDARD DISK SET IN CONCRETE IN 9-INCH
 HV6198'TILE, PROJECTING 6 INCHES ABOVE GROUND.
 HV6198'
 HV6198'REFERENCE MARK NO.1 IS NNW OF STATION, AND IS A STANDARD DISK
 HV6198'CEMENTED IN A 10-INCH SQUARE BLOCK OF CONCRETE FLUSH WITH
 HV6198'SURFACE.
 HV6198'
 HV6198'REFERENCE MARK NO.2 IS ENE OF STATION, AND IS A STANDARD DISK
 HV6198'SET IN CONCRETE BLOCK SET FLUSH WITH SURFACE.
 HV6198'
 HV6198'CHECK DISTANCES WERE TAKEN TO THE REFERENCE MARKS.  REFERENCE
 HV6198'MARK NO.1 MEASURED 15.145 METERS AND REFERENCE MARK NO.2, 14.050
 HV6198'METERS.  DIRECTIONS TO THE REFERENCE MARKS COULD NOT BE CHECKED
 HV6198'AS THEY WERE TOO CLOSE TO OBSERVING TOWER (77 FEET).  DIRECTION
 HV6198'TO ST. MICHAELS W.T. FROM RICH IS 07 DEG 16 MIN 18.0 SEC.
 HV6198'
 HV6198'PERMISSION TO OCCUPY STATION MUST BE OBTAINED FROM SEVEN ISLAND
 HV6198'DUCK CLUB OF PHILADELPHIA, ATTENTION MR. R.K. MERRICK, PRES., 424
 HV6198'LAND TITLE BUILDING, PHILADELPHIA, PA.
 HV6198
 HV6198                          STATION RECOVERY (1961)
 HV6198
 HV6198'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6198'STATION AND REFERENCE MARKS WERE NOT RECOVERED AFTER A THOROUGH
 HV6198'SEARCH.  A WOODEN BULKHEAD HAS RECENTLY BEEN CONSTRUCTED AROUND
 HV6198'THE SOUTHWEST PART OF THE ISLAND AND THERE IS EVIDENCE OF GRADING
 HV6198'AND FILLING.  IT IS BELIEVED THAT THE STATION HAS BEEN DESTROYED.
 HV6198
 HV6198                          STATION RECOVERY (1975)
 HV6198
 HV6198'RECOVERY NOTE BY MD DEPT OF NAT RES 1975
 HV6198'ISLAND ERODED.  STATION WASHED OUT.  BODKIN ISLAND NOW OWNED BY
 HV6198'DR. W.L. OROORK, 8208 GRUBB ROAD, CHEVY CHASE, MD. 20015.  NEW
 HV6198'STATION NEEDED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6200 ***********************************************************************
 HV6200  DESIGNATION -  BODKIN
 HV6200  PID         -  HV6200
 HV6200  STATE/COUNTY-  MD/QUEEN ANNES
 HV6200  COUNTRY     -  US
 HV6200  USGS QUAD   -  KENT ISLAND (2016)
 HV6200
 HV6200                         *CURRENT SURVEY CONTROL
 HV6200  ______________________________________________________________________
 HV6200* NAD 83(1991) POSITION- 38 53 43.73695(N) 076 16 48.88230(W)   ADJUSTED
 HV6200* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6200  ______________________________________________________________________
 HV6200  GEOID HEIGHT    -        -33.897 (meters)                     GEOID18
 HV6200  LAPLACE CORR    -         -4.71  (seconds)                    DEFLEC18
 HV6200  HORZ ORDER      -  THIRD
 HV6200
 HV6200.The horizontal coordinates were established by classical geodetic methods
 HV6200.and adjusted by the National Geodetic Survey in January 1992.
 HV6200
 HV6200.The orthometric height was scaled from a topographic map.
 HV6200
 HV6200.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6200.GEOID18 height accuracy estimate available here.
 HV6200
 HV6200.Click photographs - Photos may exist for this station.
 HV6200
 HV6200.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6200
 HV6200. The following values were computed from the NAD 83(1991) position.
 HV6200
 HV6200;                    North         East     Units Scale Factor Converg.
 HV6200;SPC MD       -   136,649.964   462,437.630   MT  0.99994991   +0 27 06.3
 HV6200;SPC MD       -   448,325.76  1,517,180.79   sFT  0.99994991   +0 27 06.3
 HV6200;UTM  18      - 4,305,957.177   388,976.448   MT  0.99975178   -0 48 14.2
 HV6200
 HV6200!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6200!SPC MD       -   1.00000535  x   0.99994991  =   0.99995526
 HV6200!UTM  18      -   1.00000535  x   0.99975178  =   0.99975713
 HV6200
 HV6200:                Primary Azimuth Mark                     Grid Az
 HV6200:SPC MD       -  PARSONS                                  063 45 29.6
 HV6200:UTM  18      -  PARSONS                                  065 00 50.1
 HV6200
 HV6200_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8897605957(NAD 83)
 HV6200
 HV6200|---------------------------------------------------------------------|
 HV6200| PID    Reference Object                     Distance      Geod. Az  |
 HV6200|                                                           dddmmss.s |
 HV6200| HV5755 PARSONS                             APPROX. 3.0 KM 0641235.9 |
 HV6200| HV6159 TED                                 APPROX. 4.0 KM 3221701.4 |
 HV6200| HV6153 RED                                 APPROX. 3.4 KM 3324629.5 |
 HV6200|---------------------------------------------------------------------|
 HV6200
 HV6200                          SUPERSEDED SURVEY CONTROL
 HV6200
 HV6200  NAD 83(1986)-  38 53 43.73285(N)    076 16 48.89505(W) AD(       ) 3
 HV6200  NAD 27      -  38 53 43.30800(N)    076 16 50.08200(W) AD(       ) 3
 HV6200  USSD        -  38 53 43.70400(N)    076 16 49.87300(W) AD(       ) 3
 HV6200
 HV6200.Superseded values are not recommended for survey control.
 HV6200
 HV6200.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6200.See file dsdata.pdf to determine how the superseded data were derived.
 HV6200
 HV6200_MARKER: V = STONE MONUMENT
 HV6200_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6200_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6200_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6200
 HV6200  HISTORY     - Date     Condition        Report By
 HV6200  HISTORY     - 1899     MONUMENTED       CGS
 HV6200  HISTORY     - 1975     MARK NOT FOUND   MDDNR
 HV6200
 HV6200                          STATION DESCRIPTION
 HV6200
 HV6200'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (JWD)
 HV6200'IN EASTERN BAY, ON THE SOUTHERN END OF BODKIN ISLAND, IN AN OLD
 HV6200'FIELD, AND ABOUT 35 METERS FROM THE SHORE.  THE STATION IS
 HV6200'MARKED UNDERGROUND BY A BOTTLE BURIED 34 INCHES BELOW THE
 HV6200'SURFACE OF THE GROUND.  ABOVE THIS IS PLACED A GRANITE POST 35
 HV6200'INCHES LONG, THE BOTTOM OF THE POST BEING ABOUT 3 INCHES ABOVE
 HV6200'TOP OF BOTTLE.  THE TOP OF THE POST IS DRESSED TO A 5-INCH
 HV6200'SQUARE AND IS MARKED WITH SQUARE CROSSLINES AND THE LETTERS U.S.
 HV6200
 HV6200                          STATION RECOVERY (1975)
 HV6200
 HV6200'RECOVERY NOTE BY MD DEPT OF NAT RES 1975
 HV6200'ISLAND ERODED.  STATION WASHED OUT.  BODKIN ISLAND NOW OWNED BY
 HV6200'DR. W.L. OROORK, 8208 GRUBB ROAD, CHEVY CHASE, MD.  20015.  NEW
 HV6200'STATION NEEDED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6199 ***********************************************************************
 HV6199  DESIGNATION -  BODKIN 2
 HV6199  PID         -  HV6199
 HV6199  STATE/COUNTY-  MD/QUEEN ANNES
 HV6199  COUNTRY     -  US
 HV6199  USGS QUAD   -  KENT ISLAND (2016)
 HV6199
 HV6199                         *CURRENT SURVEY CONTROL
 HV6199  ______________________________________________________________________
 HV6199* NAD 83(1991) POSITION- 38 53 48.23729(N) 076 16 51.65269(W)   ADJUSTED
 HV6199* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6199  ______________________________________________________________________
 HV6199  GEOID HEIGHT    -        -33.892 (meters)                     GEOID18
 HV6199  LAPLACE CORR    -         -4.69  (seconds)                    DEFLEC18
 HV6199  HORZ ORDER      -  THIRD
 HV6199
 HV6199.The horizontal coordinates were established by classical geodetic methods
 HV6199.and adjusted by the National Geodetic Survey in January 1992.
 HV6199
 HV6199.The orthometric height was scaled from a topographic map.
 HV6199
 HV6199.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6199.GEOID18 height accuracy estimate available here.
 HV6199
 HV6199.Click photographs - Photos may exist for this station.
 HV6199
 HV6199.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6199
 HV6199. The following values were computed from the NAD 83(1991) position.
 HV6199
 HV6199;                    North         East     Units Scale Factor Converg.
 HV6199;SPC MD       -   136,788.204   462,369.781   MT  0.99994991   +0 27 04.5
 HV6199;SPC MD       -   448,779.30  1,516,958.19   sFT  0.99994991   +0 27 04.5
 HV6199;UTM  18      - 4,306,096.843   388,911.657   MT  0.99975196   -0 48 16.0
 HV6199
 HV6199!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6199!SPC MD       -   1.00000520  x   0.99994991  =   0.99995511
 HV6199!UTM  18      -   1.00000520  x   0.99975196  =   0.99975716
 HV6199
 HV6199:                Primary Azimuth Mark                     Grid Az
 HV6199:SPC MD       -  RICH                                     150 57 46.8
 HV6199:UTM  18      -  RICH                                     152 13 07.3
 HV6199
 HV6199_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8891106096(NAD 83)
 HV6199
 HV6199|---------------------------------------------------------------------|
 HV6199| PID    Reference Object                     Distance      Geod. Az  |
 HV6199|                                                           dddmmss.s |
 HV6199| CX2108 BODKIN 2 RM 1                        20.486 METERS 05925     |
 HV6199| HV6252 RICH                                APPROX. 4.5 KM 1512451.3 |
 HV6199|---------------------------------------------------------------------|
 HV6199
 HV6199                          SUPERSEDED SURVEY CONTROL
 HV6199
 HV6199  NAD 83(1986)-  38 53 48.23319(N)    076 16 51.66542(W) AD(       ) 3
 HV6199  NAD 27      -  38 53 47.81700(N)    076 16 52.85800(W) AD(       ) 3
 HV6199
 HV6199.Superseded values are not recommended for survey control.
 HV6199
 HV6199.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6199.See file dsdata.pdf to determine how the superseded data were derived.
 HV6199
 HV6199_MARKER: DS = TRIANGULATION STATION DISK
 HV6199_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6199_STAMPING: BODKIN 2 1961
 HV6199_MARK LOGO: CGS
 HV6199_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6199+STABILITY: SURFACE MOTION
 HV6199
 HV6199  HISTORY     - Date     Condition        Report By
 HV6199  HISTORY     - 1961     MONUMENTED       CGS
 HV6199  HISTORY     - 1973     MARK NOT FOUND   MDDNR
 HV6199
 HV6199                          STATION DESCRIPTION
 HV6199
 HV6199'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6199'STATION IS LOCATED ON THE SOUTHWEST CORNER OF BODKIN ISLAND IN
 HV6199'EASTERN BAY.  ABOUT 150 FEET SW OF A CABIN WHICH IS IN A STATE
 HV6199'OF BAD REPAIR, 5.6 FT. N OF THE OUTER FACE OF THE WOODEN BULKHEAD,
 HV6199'6.2 FT. E OF THE OUTER FACE OF WOODEN BULKHEAD AND 7.7 FT. SW
 HV6199'OF LARGE PINE TREE.  STATION IS MARKED BY A STANDARD
 HV6199'TRIANGULATION STATION DISK SET IN THE TOP OF A ROUND CONCRETE
 HV6199'MONUMENT FLUSH WITH THE GROUND AND STAMPED BODKIN 2 1961.
 HV6199'
 HV6199'REFERENCE MARK NO. 1 IS LOCATED NE OF THE STATION, 37.7 FT N OF
 HV6199'A CORNER OF WOODEN BULKHEAD, 49.5 FT. W OF ANOTHER CORNER AND
 HV6199'62.0 FT. EASTERLY OF THE LARGE PINE TREE ON POINT.  REFERENCE
 HV6199'MARK IS A STANDARD TRIANGULATION STATION REFERENCE MARK DISK
 HV6199'STAMPED BODKIN 2 NO. 1 1961 SET IN THE TOP OF A ROUND CONCRETE
 HV6199'MONUMENT AND IS FLUSH WITH THE GROUND.
 HV6199
 HV6199                          STATION RECOVERY (1973)
 HV6199
 HV6199'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV6199'STATION MARK AND RM 1 SEARCHED FOR AND NOT RECOVERED.  NEW
 HV6199'BULKHEAD ERECTED AND AREA HAS BEEN FILLED AND GRADED.  LARGE
 HV6199'PINE TREE GONE.  STATION MARK AND RM 1 POSSIBLY STILL EXIST,
 HV6199'BUT COVERED BY FILL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5256 ***********************************************************************
 JV5256  DESIGNATION -  BODKIN POINT
 JV5256  PID         -  JV5256
 JV5256  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5256  COUNTRY     -  US
 JV5256  USGS QUAD   -  SPARROWS POINT (2016)
 JV5256
 JV5256                         *CURRENT SURVEY CONTROL
 JV5256  ______________________________________________________________________
 JV5256* NAD 83(1991) POSITION- 39 08 04.84920(N) 076 25 28.68845(W)   ADJUSTED
 JV5256* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5256  ______________________________________________________________________
 JV5256  GEOID HEIGHT    -        -33.180 (meters)                     GEOID18
 JV5256  LAPLACE CORR    -         -1.72  (seconds)                    DEFLEC18
 JV5256  HORZ ORDER      -  THIRD
 JV5256
 JV5256.The horizontal coordinates were established by classical geodetic methods
 JV5256.and adjusted by the National Geodetic Survey in January 1992.
 JV5256
 JV5256.The orthometric height was scaled from a topographic map.
 JV5256
 JV5256.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5256.GEOID18 height accuracy estimate available here.
 JV5256
 JV5256.Click photographs - Photos may exist for this station.
 JV5256
 JV5256.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5256
 JV5256. The following values were computed from the NAD 83(1991) position.
 JV5256
 JV5256;                    North         East     Units Scale Factor Converg.
 JV5256;SPC MD       -   163,114.084   449,744.797   MT  0.99996003   +0 21 40.0
 JV5256;SPC MD       -   535,150.12  1,475,537.72   sFT  0.99996003   +0 21 40.0
 JV5256;UTM  18      - 4,332,688.639   376,869.897   MT  0.99978668   -0 53 57.4
 JV5256
 JV5256!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5256!SPC MD       -   1.00000525  x   0.99996003  =   0.99996528
 JV5256!UTM  18      -   1.00000525  x   0.99978668  =   0.99979192
 JV5256
 JV5256:                Primary Azimuth Mark                     Grid Az
 JV5256:SPC MD       -  ROCK POINT                               307 22 44.6
 JV5256:UTM  18      -  ROCK POINT                               308 38 22.0
 JV5256
 JV5256_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7686932688(NAD 83)
 JV5256
 JV5256|---------------------------------------------------------------------|
 JV5256| PID    Reference Object                     Distance      Geod. Az  |
 JV5256|                                                           dddmmss.s |
 JV5256| CA9981 BODKIN POINT RM                      15.470 METERS 11334     |
 JV5256| JV5263 DISPOSAL PLANT CHIMNEY              APPROX. 2.1 KM 2554419.4 |
 JV5256| JV5281 ROCK POINT                          APPROX. 5.8 KM 3074424.6 |
 JV5256|---------------------------------------------------------------------|
 JV5256
 JV5256                          SUPERSEDED SURVEY CONTROL
 JV5256
 JV5256  NAD 83(1986)-  39 08 04.84453(N)    076 25 28.69843(W) AD(       ) 3
 JV5256  NAD 27      -  39 08 04.45200(N)    076 25 29.85600(W) AD(       ) 3
 JV5256  USSD        -  39 08 04.80800(N)    076 25 29.67700(W) AD(       ) 3
 JV5256
 JV5256.Superseded values are not recommended for survey control.
 JV5256
 JV5256.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5256.See file dsdata.pdf to determine how the superseded data were derived.
 JV5256
 JV5256_MARKER: B = BOLT
 JV5256_SETTING: 0 = UNSPECIFIED SETTING
 JV5256
 JV5256  HISTORY     - Date     Condition        Report By
 JV5256  HISTORY     - 1915     MONUMENTED       CGS
 JV5256  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5256  HISTORY     - 1985     MARK NOT FOUND   USPSQD
 JV5256
 JV5256                          STATION DESCRIPTION
 JV5256
 JV5256'DESCRIBED BY COAST AND GEODETIC SURVEY 1915 (EWE)
 JV5256'ON BODKIN POINT, AT S SIDE OF MOUTH OF PATAPSCO RIVER, ON THE
 JV5256'NORTHERN SIDE OF THE POINT AND ABOUT 15 METERS W OF THE RUINS OF
 JV5256'THE LIGHT KEEPERS HOUSE.  BOTH THE HOUSE AND THE OLD LIGHT TOWER
 JV5256'ARE IN RUINS.  THE PROPERTY WAS FORMERLY A GOVERNMENT LIGHTHOUSE
 JV5256'RESERVATION, BUT IS NOW THE PROPERTY OF A MR. FOARD.  STATION
 JV5256'MARK IS A 1/4-INCH BRASS BOLT IN CONCRETE MONUMENT FLUSH WITH THE
 JV5256'GROUND.  REFERENCE MARK, PROBABLY A DISK, WAS SET IN SOUTHERN
 JV5256'SIDE OF POINT AND STANDS ABOUT 6 INCHES ABOVE THE SURFACE.  IT IS
 JV5256'15.47 METERS (50.75 FEET) FROM THE STATION IN BEARING S 66 DEG 26
 JV5256'MIN E.
 JV5256
 JV5256                          STATION RECOVERY (1961)
 JV5256
 JV5256'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5256'THE STATION PLOTS IN THE WATER.  NO TRACE OF THE MONUMENT COULD BE
 JV5256'FOUND.
 JV5256
 JV5256                          STATION RECOVERY (1985)
 JV5256
 JV5256'RECOVERY NOTE BY US POWER SQUADRON 1985 (WRB)
 JV5256'STATION COULD NOT BE FOUND, STATION PLOTS IN WATER AS PER REPORT OF
 JV5256'G.F.W. IN 1961.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5255 ***********************************************************************
 JV5255  DESIGNATION -  BODKIN POINT 2
 JV5255  PID         -  JV5255
 JV5255  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5255  COUNTRY     -  US
 JV5255  USGS QUAD   -  SPARROWS POINT (2016)
 JV5255
 JV5255                         *CURRENT SURVEY CONTROL
 JV5255  ______________________________________________________________________
 JV5255* NAD 83(1991) POSITION- 39 07 30.41182(N) 076 26 02.04619(W)   ADJUSTED
 JV5255* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5255  ______________________________________________________________________
 JV5255  GEOID HEIGHT    -        -33.189 (meters)                     GEOID18
 JV5255  LAPLACE CORR    -         -1.87  (seconds)                    DEFLEC18
 JV5255  HORZ ORDER      -  FIRST
 JV5255
 JV5255.The horizontal coordinates were established by classical geodetic methods
 JV5255.and adjusted by the National Geodetic Survey in January 1992.
 JV5255
 JV5255.The orthometric height was scaled from a topographic map.
 JV5255
 JV5255.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5255.GEOID18 height accuracy estimate available here.
 JV5255
 JV5255.Click photographs - Photos may exist for this station.
 JV5255
 JV5255.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5255
 JV5255. The following values were computed from the NAD 83(1991) position.
 JV5255
 JV5255;                    North         East     Units Scale Factor Converg.
 JV5255;SPC MD       -   162,047.148   448,950.271   MT  0.99995929   +0 21 19.1
 JV5255;SPC MD       -   531,649.68  1,472,931.01   sFT  0.99995929   +0 21 19.1
 JV5255;UTM  18      - 4,331,639.616   376,052.236   MT  0.99978917   -0 54 17.7
 JV5255
 JV5255!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5255!SPC MD       -   1.00000431  x   0.99995929  =   0.99996360
 JV5255!UTM  18      -   1.00000431  x   0.99978917  =   0.99979347
 JV5255
 JV5255:                Primary Azimuth Mark                     Grid Az
 JV5255:SPC MD       -  BODKIN POINT 2 RM 2 AZIMUTH              166 04 22.2
 JV5255:UTM  18      -  BODKIN POINT 2 RM 2 AZIMUTH              167 19 59.0
 JV5255
 JV5255_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7605231639(NAD 83)
 JV5255
 JV5255|---------------------------------------------------------------------|
 JV5255| PID    Reference Object                     Distance      Geod. Az  |
 JV5255|                                                           dddmmss.s |
 JV5255| CA9982 BODKIN POINT 2 RM 1                  25.573 METERS 05243     |
 JV5255| CA9983 BODKIN POINT 2 RM 2 AZIMUTH                        1662541.3 |
 JV5255| CA9984 BODKIN POINT 2 RM 3                  28.176 METERS 26634     |
 JV5255|---------------------------------------------------------------------|
 JV5255
 JV5255                          SUPERSEDED SURVEY CONTROL
 JV5255
 JV5255  NAD 83(1986)-  39 07 30.40726(N)    076 26 02.05642(W) AD(       ) 1
 JV5255  NAD 27      -  39 07 30.01200(N)    076 26 03.19800(W) AD(       ) 1
 JV5255
 JV5255.Superseded values are not recommended for survey control.
 JV5255
 JV5255.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5255.See file dsdata.pdf to determine how the superseded data were derived.
 JV5255
 JV5255_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION
 JV5255_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5255_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5255_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5255+STABILITY: SURFACE MOTION
 JV5255
 JV5255  HISTORY     - Date     Condition        Report By
 JV5255  HISTORY     - 1933     MONUMENTED       CGS
 JV5255  HISTORY     - 1938     GOOD             CGS
 JV5255  HISTORY     - 1938     GOOD             CGS
 JV5255  HISTORY     - 1955     GOOD             CGS
 JV5255  HISTORY     - 1961     GOOD             CGS
 JV5255  HISTORY     - 1984     GOOD             NOS
 JV5255  HISTORY     - 1990     GOOD             MDDNR
 JV5255
 JV5255                          STATION DESCRIPTION
 JV5255
 JV5255'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5255'THE STATION IS ABOUT 11 MILES E OF GLEN BURNIE, 11 MILES NNE OF
 JV5255'ANNAPOLIS, AND 4 MILES N OF GIBSON ISLAND, ON THE S SIDE OF THE
 JV5255'PATAPSCO RIVER AT ITS MOUTH, ON THE HIGHEST GROUND AT THE N END OF
 JV5255'BODKIN NECK, 1/2 MILE S OF BODKIN POINT, ON LAND OWNED BY MR.
 JV5255'EARNEST ROBINSON OF CATONSVILLE, MARYLAND.
 JV5255'
 JV5255'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5255'DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1B, 7A, AND 11B.
 JV5255'
 JV5255'AZIMUTH MARK NO.2 IS A STANDARD BRONZE DISK IN A BOULDER AS
 JV5255'DESCRIBED IN NOTE 12C.
 JV5255'
 JV5255'REFERENCE MARK NO.1 IS IN YARD SW OF THE SW CORNER OF THE PORCH OF
 JV5255'THE COTTAGE AND 45 YARDS W OF THE HIGH-WATER MARK OF THE BAY.
 JV5255'REFERENCE MARK NO.2 IS A STANDARD DISK REFERENCE MARK SET IN A
 JV5255'ROCK ABOUT 2 FEET IN DIAMETER AND FLUSH WITH THE GROUND.  IT IS 3
 JV5255'YARDS NE OF A FLAGPOLE, 1 YARD SW OF THE BLUFF OF THE BAY, AND 11
 JV5255'PACES NE OF THE CORNER OF A LARGE WHITE HOUSE.  IT IS REACHED FROM
 JV5255'THE STATION BY GOING S ALONG THE UNIMPROVED ROAD 0.2 MILE AND
 JV5255'TURNING LEFT FOR 0.1 MILE, THEN TURNING LEFT THROUGH A GATE WITH
 JV5255'BRICK POSTS AND FOLLOWING DRIVE TO THE LARGE WHITE HOUSE.  IT IS
 JV5255'VISIBLE FROM THE GROUND AT THE STATION. REFERENCE MARK NO.3 IS 5
 JV5255'YARDS W OF THE ROAD IN A SMALL OPEN PLACE.
 JV5255'
 JV5255'TO REACH FROM GLEN BURNIE GO E ON ROUTE 2, A DISTANCE OF 3.6
 JV5255'MILES TO LIPINS CORNER.  TAKE THE LEFT HAND PAVED ROAD, GIBSON
 JV5255'ISLAND ROAD, 8.2 MILES TO WHERE THE PAVED ROAD CURVES RIGHT AND A
 JV5255'GRAVEL ROAD CONTINUES STRAIGHT AHEAD.  FOLLOW THIS GRAVEL ROAD 1.0
 JV5255'MILE AND TURN RIGHT FOR 0.15 MILE.  TURN LEFT AND FOLLOW ROAD
 JV5255'AROUND A BEND TO THE LEFT FOR 0.4 MILE TO WHERE IT INTERSECTS AN
 JV5255'UNIMPROVED ROAD.  TURN RIGHT ON THIS ROAD FOR 0.2 MILE TO A VACANT
 JV5255'COTTAGE.  THE STATION IS IN THE OPEN AREA, 28 YARDS SW OF THE SW
 JV5255'CORNER OF THE PORCH OF THIS COTTAGE, 70 YARDS W OF THE HIGH-WATER
 JV5255'LINE OF THE BAY, 22 YARDS E OF THE ROAD, AND 17 YARDS WSW OF A
 JV5255'14-INCH TREE.  THE MARK IS ABOUT 4 INCHES ABOVE THE GROUND.
 JV5255'
 JV5255'LOVE POINT LIGHTHOUSE WILL REQUIRE A SMALL AMOUNT OF CLEARING TO
 JV5255'BE VISIBLE FROM THE GROUND AT THE STATION.
 JV5255'
 JV5255'HEIGHT OF LIGHT ABOVE STATION MARK 18 METERS.
 JV5255
 JV5255                          STATION RECOVERY (1938)
 JV5255
 JV5255'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (JCP)
 JV5255'THE TRIANGULATION STATION AND THE THREE REFERENCE MARKS WERE
 JV5255'RECOVERED IN GOOD CONDITION.  THE TRIANGULATION STATION IS NOT IN
 JV5255'ANY DANGER OF DESTRUCTION.  REFERENCE MARK NO.2, THE AZIMUTH
 JV5255'MARK, IS IN DANGER OF BEING DESTROYED DUE TO BEACH EROSION.
 JV5255'ACCORDINGLY A THEODOLITE WAS SET UP AT THE TRIANGULATION STATION
 JV5255'AND AN ANGLE MEASURED FROM REFERENCE MARK NO.2 TO THE CHIMNEY OF
 JV5255'DR. MAC MILLANS HOUSE, THE LATTER TO BE USED IN CASE REFERENCE
 JV5255'MARK NO.2 IS DESTROYED.
 JV5255'
 JV5255'THE VACANT COTTAGE MENTIONED IN THE ORIGINAL DESCRIPTION HAS BEEN
 JV5255'TORN DOWN.
 JV5255
 JV5255                          STATION RECOVERY (1938)
 JV5255
 JV5255'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JV5255'STATION RECOVERED IN GOOD CONDITION.  DESCRIPTION COMPLETE EXCEPT
 JV5255'COTTAGE TO WHICH MEASUREMENTS WERE TAKEN HAS FALLEN DOWN.  THE
 JV5255'FOUNDATION OF THE COTTAGE IS MADE OF BRICK AND CONCRETE AND IS
 JV5255'RECOVERABLE.
 JV5255
 JV5255                          STATION RECOVERY (1955)
 JV5255
 JV5255'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (EHK)
 JV5255'STATION AND REFERENCE MARK 1 RECOVERED IN GOOD CONDITION.
 JV5255'REFERENCE MARK 3 COVERED OVER BY BULLDOZER AND WAS NOT RECOVERED.
 JV5255'REFERENCE MARK 2 WAS DESTROYED WHEN THE BLUFF ERODED.  CHIMNEY TO
 JV5255'BE USED AS AZIMUTH MARK IS IN GOOD CONDITION, BUT CANNOT BE SEEN
 JV5255'FROM THE STATION DUE TO THE TREES.  POSSIBLY CAN BE SEEN IN THE
 JV5255'FALL OR WINTER WHEN THE LEAVES FALL OFF.  THE AZIMUTH MARK IS ON
 JV5255'THE PROPERTY OF MR. MAC MILLAN, A LAWYER AND NOT A DOCTOR.  NEW
 JV5255'DIRECTIONS TO REACH THE STATION ARE AS FOLLOWS--
 JV5255'
 JV5255'FROM THE JUNCTION OF GOV. RITCHIE HIGHWAY (ROUTE 2) AND ROUTE 177,
 JV5255'PROCEED E ON ROUTE 177 FOR A DISTANCE OF 9.2 MI. TO THE FORK WITH
 JV5255'PINEHURST ROAD, THENCE 1.2 MI. ON PINEHURST ROAD TO SPRINGDALE
 JV5255'ROAD, E ON SPRINGDALE ROAD FOR 0.2 MI. TO BAYSIDE DRIVE, N ON
 JV5255'BAYSIDE DRIVE FOR 0.3 MI. TO AN UNIMPROVED CROSSROAD, E ON THE
 JV5255'UNIMPROVED ROAD FOR 50 FT. TO THE NEXT CORNER AND A
 JV5255'T-INTERSECTION, N ON THIS ROAD FOR 300 FT. TO THE END OF THE ROAD
 JV5255'AT THE WOODS LINE.  STATION IS 3 FT. N OF THE WOODS LINE, ON LINE
 JV5255'WITH THE W EDGE OF THE ROAD, AND OPPOSITE THE N PROPERTY LINE OF A
 JV5255'LOT OWNED BY MR. GRANGE.
 JV5255
 JV5255                          STATION RECOVERY (1961)
 JV5255
 JV5255'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5255'STATION RECOVERED IN GOOD CONDITION.  R.M.1 COULD NOT BE FOUND.
 JV5255'THE STATION WAS STAMPED BODKIN POINT 2 1933.  NO SEARCH FOR THE
 JV5255'AZIMUTH MARK WAS MADE.  THE PREVIOUS DESCRIPTION BY E.H.K. IN
 JV5255'1955 IS COMPLETE AND ADEQUATE.
 JV5255
 JV5255                          STATION RECOVERY (1984)
 JV5255
 JV5255'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1984 (WVH)
 JV5255'STATION RECOVERED AS DESCRIBED.  THE ROAD NO LONGER ENDS JUST
 JV5255'SOUTH FROM THE STATION.  A NEW HOUSE HAS BEEN BUILT NORTH FROM
 JV5255'THE GRANGE RESIDENCE AND THE ROAD HAS BEEN EXTENDED 100 FEET INTO
 JV5255'A CUL DE SAC.  THE STATION IS WEST FROM THE SOUTHERN
 JV5255'EDGE OF THE CUL DE SAC, AND 1 FT WEST FROM THE WEST EDGE OF THE
 JV5255'ROAD.
 JV5255'
 JV5255'RECOVERED BY J. DANIEL.
 JV5255
 JV5255                          STATION RECOVERY (1990)
 JV5255
 JV5255'RECOVERY NOTE BY MD DEPT OF NAT RES 1990 (LW)
 JV5255'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3498 ***********************************************************************
 JU3498  DESIGNATION -  BOGG
 JU3498  PID         -  JU3498
 JU3498  STATE/COUNTY-  MD/KENT
 JU3498  COUNTRY     -  US
 JU3498  USGS QUAD   -  CHURCH HILL (2017)
 JU3498
 JU3498                         *CURRENT SURVEY CONTROL
 JU3498  ______________________________________________________________________
 JU3498* NAD 83(1991) POSITION- 39 14 35.60697(N) 075 56 18.36180(W)   ADJUSTED
 JU3498* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JU3498  ______________________________________________________________________
 JU3498  GEOID HEIGHT    -        -33.548 (meters)                     GEOID18
 JU3498  LAPLACE CORR    -         -2.44  (seconds)                    DEFLEC18
 JU3498  HORZ ORDER      -  THIRD
 JU3498
 JU3498.The horizontal coordinates were established by classical geodetic methods
 JU3498.and adjusted by the National Geodetic Survey in January 1992.
 JU3498
 JU3498.The orthometric height was scaled from a topographic map.
 JU3498
 JU3498.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3498.GEOID18 height accuracy estimate available here.
 JU3498
 JU3498.Click photographs - Photos may exist for this station.
 JU3498
 JU3498.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3498
 JU3498. The following values were computed from the NAD 83(1991) position.
 JU3498
 JU3498;                    North         East     Units Scale Factor Converg.
 JU3498;SPC MD       -   175,540.162   491,639.210   MT  0.99997036   +0 39 58.6
 JU3498;SPC MD       -   575,918.01  1,612,986.31   sFT  0.99997036   +0 39 58.6
 JU3498;UTM  18      - 4,344,187.562   419,017.580   MT  0.99968075   -0 35 37.3
 JU3498
 JU3498!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3498!SPC MD       -   1.00000499  x   0.99997036  =   0.99997535
 JU3498!UTM  18      -   1.00000499  x   0.99968075  =   0.99968574
 JU3498
 JU3498:                Primary Azimuth Mark                     Grid Az
 JU3498:SPC MD       -  SUTTON                                   166 48 07.2
 JU3498:UTM  18      -  SUTTON                                   168 03 43.1
 JU3498
 JU3498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1901744187(NAD 83)
 JU3498
 JU3498|---------------------------------------------------------------------|
 JU3498| PID    Reference Object                     Distance      Geod. Az  |
 JU3498|                                                           dddmmss.s |
 JU3498| JU3500 SUTTON                              APPROX. 0.6 KM 1672805.8 |
 JU3498|---------------------------------------------------------------------|
 JU3498
 JU3498                          SUPERSEDED SURVEY CONTROL
 JU3498
 JU3498  NAD 83(1986)-  39 14 35.59645(N)    075 56 18.37847(W) AD(       ) 3
 JU3498  NAD 27      -  39 14 35.18800(N)    075 56 19.58900(W) AD(       ) 3
 JU3498  USSD        -  39 14 35.68000(N)    075 56 19.30300(W) AD(       ) 3
 JU3498
 JU3498.Superseded values are not recommended for survey control.
 JU3498
 JU3498.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3498.See file dsdata.pdf to determine how the superseded data were derived.
 JU3498
 JU3498_MARKER: N = NAIL
 JU3498_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JU3498_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3498
 JU3498  HISTORY     - Date     Condition        Report By
 JU3498  HISTORY     - 1909     MONUMENTED       CGS
 JU3498  HISTORY     - 1938     MARK NOT FOUND   CGS
 JU3498
 JU3498                          STATION DESCRIPTION
 JU3498
 JU3498'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JU3498'STATION IS ON THE NORTHERN SHORE OF CHESTER RIVER, OPPOSITE SUTTON
 JU3498'POINT, ON LAND BELONGING TO JOHN WESLEY BOGGS, AND ABOUT 85 METERS
 JU3498'FROM SHORE LINE.
 JU3498'
 JU3498'THE STATION IS MARKED BY A BURIED GLASS BOTTLE AND A NAIL IN
 JU3498'CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE TOP OF
 JU3498'A DRAINTILE AT THE SURFACE OF THE GROUND.
 JU3498'
 JU3498'REFERENCE MARKS 1, 2, AND 3 ARE TRIANGLES WITH NAILS IN CENTER
 JU3498'BLAZED ON THREE OAK TREES, THEY ARE AT THE FOLLOWING DISTANCES
 JU3498'AND BEARINGS FROM THE STATION--NO.1, 12.08 METERS (39.6 FEET),
 JU3498'S 58 DEG 58 MIN E. NO.2, 1.96 METERS (6.43 FEET), S 7 DEG 25
 JU3498'MIN W.  NO.3, 15.30 METERS (50.2 FEET), N 72 DEG 34 MIN W. REFERENCE
 JU3498'MARK NO.4 IS A BURIED QUART BOTTLE AND A NAIL IN CONCRETE AT THE
 JU3498'TOP OF A DRAINTILE AT THE SURFACE OF THE GROUND.  IT IS 4.52
 JU3498'METERS (14.83 FEET) FROM THE STATION IN BEARING N 70 DEG W.
 JU3498
 JU3498                          STATION RECOVERY (1938)
 JU3498
 JU3498'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3498'STATION OR REFERENCE MARKS COULD NOT BE FOUND.  ORIGINAL
 JU3498'DESCRIPTION INCOMPLETE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8939 ***********************************************************************
 HV8939  CBN         -  This is a Cooperative Base Network Control Station.
 HV8939  DESIGNATION -  BOGGIE
 HV8939  PID         -  HV8939
 HV8939  STATE/COUNTY-  MD/ST MARYS
 HV8939  COUNTRY     -  US
 HV8939  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV8939
 HV8939                         *CURRENT SURVEY CONTROL
 HV8939  ______________________________________________________________________
 HV8939* NAD 83(2011) POSITION- 38 23 03.81795(N) 076 50 26.37323(W)   ADJUSTED
 HV8939* NAD 83(2011) ELLIP HT-    12.250 (meters)        (06/27/12)   ADJUSTED
 HV8939* NAD 83(2011) EPOCH   -  2010.00
 HV8939* NAVD 88 ORTHO HEIGHT -    45.873 (meters)      150.50  (feet) ADJUSTED
 HV8939  ______________________________________________________________________
 HV8939  GEOID HEIGHT    -        -33.618 (meters)                     GEOID18
 HV8939  NAD 83(2011) X  -  1,139,678.658 (meters)                     COMP
 HV8939  NAD 83(2011) Y  - -4,874,601.891 (meters)                     COMP
 HV8939  NAD 83(2011) Z  -  3,938,985.862 (meters)                     COMP
 HV8939  LAPLACE CORR    -         -1.70  (seconds)                    DEFLEC18
 HV8939  DYNAMIC HEIGHT  -         45.844 (meters)      150.41  (feet) COMP
 HV8939  MODELED GRAVITY -    980,006.4   (mgal)                       NAVD 88
 HV8939
 HV8939  VERT ORDER      -  SECOND    CLASS I
 HV8939
 HV8939  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8939  Standards:
 HV8939         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8939            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8939  -------------------------------------------------------------------
 HV8939  NETWORK    0.64   1.47           0.29   0.23   0.75      0.00620159
 HV8939  -------------------------------------------------------------------
 HV8939  Click here for local accuracies and other accuracy information.
 HV8939
 HV8939.The horizontal coordinates were established by GPS observations
 HV8939.and adjusted by the National Geodetic Survey in June 2012.
 HV8939
 HV8939.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8939.been affixed to the stable North American tectonic plate. See 
 HV8939.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8939
 HV8939.The horizontal coordinates are valid at the epoch date displayed above
 HV8939.which is a decimal equivalence of Year/Month/Day.
 HV8939
 HV8939.The orthometric height was determined by differential leveling and
 HV8939.adjusted by the NATIONAL GEODETIC SURVEY
 HV8939.in August 1994.
 HV8939
 HV8939.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8939.GEOID18 height accuracy estimate available here.
 HV8939
 HV8939.Click photographs - Photos may exist for this station.
 HV8939
 HV8939.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8939
 HV8939.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8939
 HV8939.The ellipsoidal height was determined by GPS observations
 HV8939.and is referenced to NAD 83.
 HV8939
 HV8939.The dynamic height is computed by dividing the NAVD 88
 HV8939.geopotential number by the normal gravity value computed on the
 HV8939.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8939.degrees latitude (g = 980.6199 gals.).
 HV8939
 HV8939.The modeled gravity was interpolated from observed gravity values.
 HV8939
 HV8939. The following values were computed from the NAD 83(2011) position.
 HV8939
 HV8939;                    North         East     Units Scale Factor Converg.
 HV8939;SPC MD       -    79,682.909   413,921.728   MT  0.99998639   +0 06 00.0
 HV8939;SPC MD       -   261,426.34  1,358,008.20   sFT  0.99998639   +0 06 00.0
 HV8939;SPC VA S     - 1,228,909.689 3,644,987.414   MT  1.00010298   +1 00 25.5
 HV8939;SPC VA S     - 4,031,847.87 11,958,596.21   sFT  1.00010298   +1 00 25.5
 HV8939;UTM  18      - 4,250,069.479   339,235.823   MT  0.99991829   -1 08 35.4
 HV8939
 HV8939!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8939!SPC MD       -   0.99999808  x   0.99998639  =   0.99998447
 HV8939!SPC VA S     -   0.99999808  x   1.00010298  =   1.00010106
 HV8939!UTM  18      -   0.99999808  x   0.99991829  =   0.99991637
 HV8939
 HV8939_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3923550069(NAD 83)
 HV8939
 HV8939                          SUPERSEDED SURVEY CONTROL
 HV8939
 HV8939  NAD 83(2007)-  38 23 03.81826(N)    076 50 26.37323(W) AD(2002.00) 0
 HV8939  ELLIP H (02/10/07)   12.287  (m)                       GP(2002.00)    
 HV8939  ELLIP H (02/12/02)   12.289  (m)                       GP(       ) 4 1
 HV8939  NAD 83(1991)-  38 23 03.81791(N)    076 50 26.37371(W) AD(       ) B
 HV8939  ELLIP H (10/23/91)   12.360  (m)                       GP(       ) 4 1
 HV8939  NAVD 88              45.87   (m)          150.5    (f) LEVELING    3  
 HV8939  NAVD 88 (11/16/93)   45.9    (m)  GEOID93  model used  GPS OBS        
 HV8939  NGVD 29              46.12   (m)          151.3    (f) LEVELING    3  
 HV8939
 HV8939.Superseded values are not recommended for survey control.
 HV8939
 HV8939.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8939.See file dsdata.pdf to determine how the superseded data were derived.
 HV8939
 HV8939_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8939_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8939_STAMPING: BOGGIE 1990
 HV8939_MARK LOGO: NGS
 HV8939_PROJECTION: RECESSED 5 CENTIMETERS
 HV8939_MAGNETIC: A = STEEL ROD ADJACENT TO MONUMENT
 HV8939_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8939+STABILITY: SURFACE MOTION
 HV8939_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8939+SATELLITE: SATELLITE OBSERVATIONS - July 25, 2018
 HV8939
 HV8939  HISTORY     - Date     Condition        Report By
 HV8939  HISTORY     - 1990     MONUMENTED       NGS
 HV8939  HISTORY     - 19910320 GOOD             NGS
 HV8939  HISTORY     - 19921117 GOOD             MCCRON
 HV8939  HISTORY     - 19970709 GOOD             GPI
 HV8939  HISTORY     - 19990805 GOOD             GEOMET
 HV8939  HISTORY     - 20000405 GOOD             MDSHA
 HV8939  HISTORY     - 20000803 GOOD             GEOMET
 HV8939  HISTORY     - 20000824 GOOD             GEOMET
 HV8939  HISTORY     - 20000902 GOOD             GEOMET
 HV8939  HISTORY     - 20050202 GOOD             GEOMET
 HV8939  HISTORY     - 20150211 GOOD             INDIV
 HV8939  HISTORY     - 20180725 GOOD             NGS
 HV8939
 HV8939                          STATION DESCRIPTION
 HV8939
 HV8939'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8939'THE STATION IS LOCATED ABOUT 20.8 KM (12.9 MI) NORTHWEST OF
 HV8939'LEONARDTOWN, 11.2 KM (7.0 MI) SOUTHWEST OF MECHANICSVILLE AND 2.4 KM
 HV8939'(1.5 MI) SOUTHEAST OF BUDDS CREEK ON THE GROUNDS OF WICOMICO SHORES
 HV8939'YACHT AND GOLF CLUB.  OWNERSHIP--ST MARYS COUNTY DEPARTMENT OF
 HV8939'RECREATION AND PARKS.
 HV8939'TO REACH THE STATION FROM THE INTERSECTION OF U. S. HIGHWAY 301 AND
 HV8939'STATE HIGHWAY 234, 1.0 MI (1.6 KM) WEST OF ALLENS FRESH, GO EAST ON
 HV8939'STATE HIGHWAY 234 FOR 12.64 KM (7.85 MI) TO AVIATION YACHT CLUB ROAD
 HV8939'(EXECUTIVE BOULAVARD). TURN RIGHT AND GO SOUTHWEST FOR 1.52 KM
 HV8939'(0.94 MI) TO THE ENTERANCE OF WICOMICO SHORES YACHT AND GOLF CLUB.
 HV8939'TURN RIGHT AND FOLLOW THE DRIVEWAY AROUND TO THE PARKING AREA FOR
 HV8939'0.24 KM (0.15 MI) TO THE STATION ON THE RIGHT IN AN OPEN GRASSY AREA.
 HV8939'THE STATION DISK IS SET IN THE TOP OF A 0.23 M (0.75 FT) ROUND
 HV8939'CONCRETE MONUMENT WICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT
 HV8939'IS 18.53 M (60.79 FT) NORTHEAST OF THE PARKING LOT, 18.29 M
 HV8939'(60.01 FT) NORTHEAST OF A FIRE HYDRANT, 30.33 M (99.51 FT) EAST OF A
 HV8939'LIGHT AND ELECTRIC POLE, 23.77 M (77.99 FT) SOUTHEAST OF THE EAST
 HV8939'CORNER OF A METAL STORAGE SHED AND 28.96 M (95.01 FT) NORTHWEST OF
 HV8939'ANOTHER LIGHT AND ELECTRIC POLE.
 HV8939
 HV8939                          STATION RECOVERY (1991)
 HV8939
 HV8939'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV8939'RECOVERED IN GOOD CONDITION.
 HV8939
 HV8939                          STATION RECOVERY (1992)
 HV8939
 HV8939'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1992
 HV8939'RECOVERED IN GOOD CONDITION.
 HV8939
 HV8939                          STATION RECOVERY (1997)
 HV8939
 HV8939'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 1997 (JC)
 HV8939'RECOVERED AS DESCRIBED.  APPARENTLY THIS MONUMENT CONTAINED NO
 HV8939'MAGNETIC MATERIAL SO A STEEL ROD WAS PLACED NEXT TO THE MONUMENT. ALSO
 HV8939'THE STATION IS NOW RECESSED ABOUT 0.1 FT BELOW THE GROUND.
 HV8939
 HV8939                          STATION RECOVERY (1999)
 HV8939
 HV8939'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BB)
 HV8939'RECOVERED AS DESCRIBED.
 HV8939
 HV8939                          STATION RECOVERY (2000)
 HV8939
 HV8939'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV8939'RECOVERED AS DESCRIBED.
 HV8939
 HV8939                          STATION RECOVERY (2000)
 HV8939
 HV8939'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HV8939'RECOVERED IN GOOD CONDITION.
 HV8939
 HV8939                          STATION RECOVERY (2000)
 HV8939
 HV8939'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HV8939'RECOVERED IN GOOD CONDITION.
 HV8939
 HV8939                          STATION RECOVERY (2000)
 HV8939
 HV8939'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HV8939'RECOVERED IN GOOD CONDITION.
 HV8939
 HV8939                          STATION RECOVERY (2005)
 HV8939
 HV8939'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2005 (BCL)
 HV8939'MARK IS NOW RECESSED 2 INCHES
 HV8939
 HV8939                          STATION RECOVERY (2015)
 HV8939
 HV8939'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2015 (WRA)
 HV8939'RECOVERED AS DESCRIBED
 HV8939
 HV8939                          STATION RECOVERY (2018)
 HV8939
 HV8939'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2018 (RWA)
 HV8939'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5078 ***********************************************************************
 JV5078  DESIGNATION -  BOGLE
 JV5078  PID         -  JV5078
 JV5078  STATE/COUNTY-  MD/KENT
 JV5078  COUNTRY     -  US
 JV5078  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5078
 JV5078                         *CURRENT SURVEY CONTROL
 JV5078  ______________________________________________________________________
 JV5078* NAD 83(1991) POSITION- 39 01 59.43354(N) 076 12 26.70499(W)   ADJUSTED
 JV5078* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5078  ______________________________________________________________________
 JV5078  GEOID HEIGHT    -        -33.607 (meters)                     GEOID18
 JV5078  LAPLACE CORR    -         -2.82  (seconds)                    DEFLEC18
 JV5078  HORZ ORDER      -  SECOND
 JV5078
 JV5078.The horizontal coordinates were established by classical geodetic methods
 JV5078.and adjusted by the National Geodetic Survey in January 1992.
 JV5078
 JV5078.The orthometric height was scaled from a topographic map.
 JV5078
 JV5078.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5078.GEOID18 height accuracy estimate available here.
 JV5078
 JV5078.Click photographs - Photos may exist for this station.
 JV5078
 JV5078.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5078
 JV5078. The following values were computed from the NAD 83(1991) position.
 JV5078
 JV5078;                    North         East     Units Scale Factor Converg.
 JV5078;SPC MD       -   151,986.990   468,622.404   MT  0.99995361   +0 29 50.8
 JV5078;SPC MD       -   498,643.98  1,537,472.00   sFT  0.99995361   +0 29 50.8
 JV5078;UTM  18      - 4,321,151.691   395,494.778   MT  0.99973448   -0 45 37.7
 JV5078
 JV5078!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5078!SPC MD       -   1.00000531  x   0.99995361  =   0.99995892
 JV5078!UTM  18      -   1.00000531  x   0.99973448  =   0.99973979
 JV5078
 JV5078:                Primary Azimuth Mark                     Grid Az
 JV5078:SPC MD       -  QUEENSTOWN WATER TANK                    136 47 41.5
 JV5078:UTM  18      -  QUEENSTOWN WATER TANK                    138 03 10.0
 JV5078
 JV5078_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9549421151(NAD 83)
 JV5078
 JV5078|---------------------------------------------------------------------|
 JV5078| PID    Reference Object                     Distance      Geod. Az  |
 JV5078|                                                           dddmmss.s |
 JV5078| HV5791 QUEENSTOWN WATER TANK               APPROX. 6.5 KM 1371732.3 |
 JV5078| CA9985 BOGLE RM 1                           24.192 METERS 20631     |
 JV5078| CA9986 BOGLE RM 2                           28.783 METERS 29103     |
 JV5078|---------------------------------------------------------------------|
 JV5078
 JV5078                          SUPERSEDED SURVEY CONTROL
 JV5078
 JV5078  NAD 83(1986)-  39 01 59.42820(N)    076 12 26.71685(W) AD(       ) 2
 JV5078  NAD 27      -  39 01 59.02800(N)    076 12 27.88400(W) AD(       ) 2
 JV5078
 JV5078.Superseded values are not recommended for survey control.
 JV5078
 JV5078.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5078.See file dsdata.pdf to determine how the superseded data were derived.
 JV5078
 JV5078_MARKER: DS = TRIANGULATION STATION DISK
 JV5078_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5078_STAMPING: BOGLE 1938
 JV5078_MARK LOGO: CGS
 JV5078_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5078+STABILITY: SURFACE MOTION
 JV5078
 JV5078  HISTORY     - Date     Condition        Report By
 JV5078  HISTORY     - 1938     MONUMENTED       CGS
 JV5078  HISTORY     - 1961     GOOD             CGS
 JV5078  HISTORY     - 19960824 MARK NOT FOUND   USPSQD
 JV5078
 JV5078                          STATION DESCRIPTION
 JV5078
 JV5078'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5078'STATION IS LOCATED ON WESTERN SHORE OF CHESTER RIVER NEAR SITE OF
 JV5078'OLD BOGLES WHARF ON EASTERN NECK ISLAND.  STATION IS 5 PACES W OF
 JV5078'HIGH-WATER LINE AND 19 PACES S OF OLD WHARF PILING.
 JV5078'
 JV5078'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5078'DISKS SET IN CONCRETE.
 JV5078'
 JV5078'STATION IS REACHED FROM ROCK HALL BY GOING S ON EASTERN NECK
 JV5078'ROAD 7.1 MILES TO GRAVEL ROAD LEADING LEFT, GO 0.8 MILE TO OYSTER
 JV5078'HOUSES, TURN LEFT AROUND BUILDINGS, FOLLOWING OLD BOGLE WHARF ROAD
 JV5078'ABOUT 0.15 MILE TO STATION AND WATERS EDGE.
 JV5078
 JV5078                          STATION RECOVERY (1961)
 JV5078
 JV5078'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5078'STATION MARK AND REFERENCE MARKS RECOVERED IN GOOD
 JV5078'CONDITION.  STATION MARK IS NOW 3 FT. FROM THE M.H.W.I. AND
 JV5078'PROJECTS 4 INCHES.  REFERENCE MARK NO.2 IS ON RANGE WITH THE
 JV5078'PILING OF THE OLD PIER AND PROJECTS 1 INCH.
 JV5078
 JV5078                          STATION RECOVERY (1996)
 JV5078
 JV5078'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV5078'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3521 ***********************************************************************
 JU3521  DESIGNATION -  BOHEMIA
 JU3521  PID         -  JU3521
 JU3521  STATE/COUNTY-  MD/CECIL
 JU3521  COUNTRY     -  US
 JU3521  USGS QUAD   -  CECILTON (2016)
 JU3521
 JU3521                         *CURRENT SURVEY CONTROL
 JU3521  ______________________________________________________________________
 JU3521* NAD 83(1991) POSITION- 39 28 31.71304(N) 075 46 29.29398(W)   ADJUSTED
 JU3521* NAVD 88 ORTHO HEIGHT -    14.5   (meters)       48.    (feet) VERTCON3
 JU3521  ______________________________________________________________________
 JU3521  GEOID HEIGHT    -        -33.447 (meters)                     GEOID18
 JU3521  LAPLACE CORR    -         -1.01  (seconds)                    DEFLEC18
 JU3521  HORZ ORDER      -  SECOND
 JU3521
 JU3521.The horizontal coordinates were established by classical geodetic methods
 JU3521.and adjusted by the National Geodetic Survey in January 1992.
 JU3521
 JU3521.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3521.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3521
 JU3521.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3521.GEOID18 height accuracy estimate available here.
 JU3521
 JU3521.Click photographs - Photos may exist for this station.
 JU3521
 JU3521.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3521
 JU3521. The following values were computed from the NAD 83(1991) position.
 JU3521
 JU3521;                    North         East     Units Scale Factor Converg.
 JU3521;SPC MD       -   201,499.526   505,417.647   MT  1.00000456   +0 46 08.3
 JU3521;SPC MD       -   661,086.36  1,658,191.06   sFT  1.00000456   +0 46 08.3
 JU3521;UTM  18      - 4,369,829.277   433,359.327   MT  0.99965468   -0 29 33.4
 JU3521
 JU3521!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3521!SPC MD       -   1.00000298  x   1.00000456  =   1.00000754
 JU3521!UTM  18      -   1.00000298  x   0.99965468  =   0.99965766
 JU3521
 JU3521:                Primary Azimuth Mark                     Grid Az
 JU3521:SPC MD       -  MANLOVE                                  228 40 14.9
 JU3521:UTM  18      -  MANLOVE                                  229 55 56.6
 JU3521
 JU3521_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3335969829(NAD 83)
 JU3521
 JU3521|---------------------------------------------------------------------|
 JU3521| PID    Reference Object                     Distance      Geod. Az  |
 JU3521|                                                           dddmmss.s |
 JU3521| CB1279 BOHEMIA RM 1                         28.953 METERS 08856     |
 JU3521| JU3520 BOUNDARY MONUMENT 70 DEL MD          26.377 METERS 09422     |
 JU3521| CB1280 BOHEMIA RM 2                         24.212 METERS 15634     |
 JU3521| CB1281 BOHEMIA RM 3                         64.015 METERS 18752     |
 JU3521| JU3509 MANLOVE                             APPROX. 6.6 KM 2292623.2 |
 JU3521| JU3954 NORTH EAST MICROWAVE TOWER          APPROX.16.4 KM 3054416.3 |
 JU3521| JU3902 BETHEL RM 3                         APPROX. 6.4 KM 3564022.0 |
 JU3521|---------------------------------------------------------------------|
 JU3521
 JU3521                          SUPERSEDED SURVEY CONTROL
 JU3521
 JU3521  NAD 83(1986)-  39 28 31.70597(N)    075 46 29.30169(W) AD(       ) 2
 JU3521  NAD 27      -  39 28 31.30460(N)    075 46 30.53940(W) AD(       ) 2
 JU3521  NGVD 29 (07/19/86)   14.7    (m)           48.     (f) VERT ANG       
 JU3521
 JU3521.Superseded values are not recommended for survey control.
 JU3521
 JU3521.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3521.See file dsdata.pdf to determine how the superseded data were derived.
 JU3521
 JU3521_MARKER: DS = TRIANGULATION STATION DISK
 JU3521_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3521_STAMPING: BOHEMIA 1961
 JU3521_MARK LOGO: CGS
 JU3521_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3521+STABILITY: SURFACE MOTION
 JU3521
 JU3521  HISTORY     - Date     Condition        Report By
 JU3521  HISTORY     - 1961     MONUMENTED       CGS
 JU3521
 JU3521                          STATION DESCRIPTION
 JU3521
 JU3521'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3521'THE STATION IS LOCATED ABOUT 4.0 MILES SOUTHEAST OF CHESAPEAKE CITY,
 JU3521'MARYLAND AND 3.5 MILES NORTHWEST OF MIDDLETOWN, DELAWARE AND ON
 JU3521'PROPERTY OWNED BY MRS JAUNITA HORNBURGER.  IT IS 95.0 FEET WEST OF
 JU3521'A FIELD ENTRANCE, 31.0 FEET NORTHWEST OF A 10-INCH LOCUST TREE,
 JU3521'17.0 FEET NORTHWEST OF A DIM TRACK FIELD ROAD AND 5.3 FEET
 JU3521'SOUTH-SOUTHWEST OF A STANDARD METAL WITNESS POST AND MARKER.
 JU3521'
 JU3521'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 299, 896
 JU3521'AND BROAD AND MAIN STREET IN MIDDLETOWN, DELAWARE.  GO WEST ON
 JU3521'MAIN STREET AND STATE HIGHWAY 299 FOR 0.2 MILE TO THE JUNCTION OF
 JU3521'U.S. HIGHWAY 301.  CONTINUE WEST ON U.S. HIGHWAY 301 AND STATE
 JU3521'HIGHWAY 299 FOR 0.4 MILE TO A FORK.  TAKE THE RIGHT HAND FORK AND
 JU3521'GO NORTHWEST ON A BLACKTOP ROAD FOR 3.0 MILES TO A FORK AT THE
 JU3521'BOHEMIA MILLS POND.  TAKE THE RIGHT HAND FORK AND GO NORTH ON A
 JU3521'BLACKTOP ROAD FOR 0.85 MILE TO A FORK AND A HOUSE ON THE EAST
 JU3521'SIDE OF THE ROAD.  TURN RIGHT AND GO EAST ON A FIELD ROAD
 JU3521'ALONG THE SOUTH SIDE OF AN EAST AND WEST FENCELINE THAT EXTENDS TO
 JU3521'THE ROAD ON THE SOUTH SIDE OF THE HOUSE, FOR 0.25 MILE TO A
 JU3521'LARGE OPENING IN THE WOODS TO OTHER FIELDS AND THE STATION.
 JU3521'
 JU3521'THE STATION MARK, A STANDARD DISK STAMPED BOHEMIA 1961, IS SET
 JU3521'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 1
 JU3521'INCH ABOVE THE SURFACE OF THE GROUND.
 JU3521'
 JU3521'REFERENCE MARK 1, A STANDARD DISK STAMPED BOHEMIA NO 1 1961, IS SET
 JU3521'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 2
 JU3521'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 94.0 FEET EAST OF A
 JU3521'STANDARD METAL WITNESS POST AND MARKER, 6.0 FEET SOUTHWEST OF THE
 JU3521'CENTER OF A GATE AND FIELD ENTRANCE, 1.7 FEET SOUTH OF A SOUTH
 JU3521'GATE POST, 1.3 FEET WEST OF A NORTH AND SOUTH FENCELINE AND IS
 JU3521'ABOUT 6.0 FEET LOWER THAN THE STATION.
 JU3521'
 JU3521'REFERENCE MARK 2, A STANDARD DISK STAMPED BOHEMIA NO 2 1961, IS SET
 JU3521'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 JU3521'SURFACE OF THE GROUND.  IT IS 83.7 FEET SOUTH-SOUTHEAST OF THE
 JU3521'STANDARD METAL WITNESS POST AND MARKER, 16.8 FEET SOUTH-SOUTHWEST
 JU3521'OF A TWIN-FORK LOCUST TREE AND ABOUT 14-INCHES LOWER THAN THE
 JU3521'STATION.
 JU3521'
 JU3521'REFERENCE MARK 3, A STANDARD DISK STAMPED BOHEMIA NO 3 1961, IS SET
 JU3521'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 2
 JU3521'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 2.2 FEET NORTH OF
 JU3521'THE STANDARD METAL WITNESS POST AND MARKER AND IS ABOUT 8.0 FEET
 JU3521'HIGHER THAN THE STATION.
 JU3521'
 JU3521'BOUNDARY MONUMENT NO. 70, A 12-INCH SQUARE STONE MONUMENT WITH
 JU3521'AN UNRECOGNIZABLE COAT OF ARMS ON THE EAST AND WEST SIDE.  FUSED
 JU3521'BY CONCRETE TO THE NORTH SIDE OF THE MONUMENT IS AN 18-INCH LONG,
 JU3521'3-INCH WIDE AND 16-DEEP PYRAMIDAL SHAPED CONCRETE MONUMENT BEARING
 JU3521'A BRASS, RECTANGULAR, PLATE INSCRIBED WITH INDIAN TRIBAL
 JU3521'INFORMATION, CHOPTANK AND LENAPE TRIBES, PLACED BY THE CECIL
 JU3521'HISTORICAL SOCIETY.  THE MONUMENT PROJECTS ABOUT 17 INCHES
 JU3521'ABOVE THE SURFACE OF THE GROUND AND IS 13.8 FEET WEST OF A
 JU3521'NORTH AND SOUTH FENCELINE, 13.0 FEET SOUTH-SOUTHWEST OF THE
 JU3521'CENTER OF A GATE AND FIELD ENTRANCE AND 12.0 FEET SOUTH OF
 JU3521'THE CENTERLINE OF A FIELD ROAD.
 JU3521'
 JU3521'HEIGHT OF LIGHT ABOVE STATION MARK 34.23 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7191 ***********************************************************************
 JV7191  DESIGNATION -  BOLL
 JV7191  PID         -  JV7191
 JV7191  STATE/COUNTY-  MD/FREDERICK
 JV7191  COUNTRY     -  US
 JV7191  USGS QUAD   -  EMMITSBURG (2016)
 JV7191
 JV7191                         *CURRENT SURVEY CONTROL
 JV7191  ______________________________________________________________________
 JV7191* NAD 83(2011) POSITION- 39 41 17.43330(N) 077 16 55.08315(W)   ADJUSTED
 JV7191* NAD 83(2011) ELLIP HT-    99.496 (meters)        (06/27/12)   ADJUSTED
 JV7191* NAD 83(2011) EPOCH   -  2010.00
 JV7191* NAVD 88 ORTHO HEIGHT -   132.8   (meters)      436.    (feet) GPS OBS
 JV7191  ______________________________________________________________________
 JV7191  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7191  GEOID HEIGHT    -        -33.540 (meters)                     GEOID93
 JV7191  GEOID HEIGHT    -        -33.250 (meters)                     GEOID18
 JV7191  NAD 83(2011) X  -  1,082,045.741 (meters)                     COMP
 JV7191  NAD 83(2011) Y  - -4,794,379.483 (meters)                     COMP
 JV7191  NAD 83(2011) Z  -  4,051,466.433 (meters)                     COMP
 JV7191  LAPLACE CORR    -          2.41  (seconds)                    DEFLEC18
 JV7191
 JV7191  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7191  Standards:
 JV7191         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7191            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7191  -------------------------------------------------------------------
 JV7191  NETWORK    1.50   1.69           0.68   0.53   0.86     -0.00292976
 JV7191  -------------------------------------------------------------------
 JV7191  Click here for local accuracies and other accuracy information.
 JV7191
 JV7191.The horizontal coordinates were established by GPS observations
 JV7191.and adjusted by the National Geodetic Survey in June 2012.
 JV7191
 JV7191.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7191.been affixed to the stable North American tectonic plate. See 
 JV7191.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7191
 JV7191.The horizontal coordinates are valid at the epoch date displayed above
 JV7191.which is a decimal equivalence of Year/Month/Day.
 JV7191
 JV7191.The orthometric height was determined by GPS observations and a
 JV7191.high-resolution geoid model.
 JV7191
 JV7191.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7191.GEOID18 height accuracy estimate available here.
 JV7191
 JV7191.Click photographs - Photos may exist for this station.
 JV7191
 JV7191.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7191
 JV7191.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7191
 JV7191.The ellipsoidal height was determined by GPS observations
 JV7191.and is referenced to NAD 83.
 JV7191
 JV7191. The following values were computed from the NAD 83(2011) position.
 JV7191
 JV7191;                    North         East     Units Scale Factor Converg.
 JV7191;SPC MD       -   224,445.447   375,811.359   MT  1.00005035   -0 10 37.1
 JV7191;SPC MD       -   736,368.10  1,232,974.43   sFT  1.00005035   -0 10 37.1
 JV7191;UTM  18      - 4,395,637.968   304,319.158   MT  1.00007144   -1 27 27.9
 JV7191
 JV7191!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7191!SPC MD       -   0.99998439  x   1.00005035  =   1.00003474
 JV7191!UTM  18      -   0.99998439  x   1.00007144  =   1.00005583
 JV7191
 JV7191_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0431995637(NAD 83)
 JV7191
 JV7191                          SUPERSEDED SURVEY CONTROL
 JV7191
 JV7191  NAD 83(2007)-  39 41 17.43356(N)    077 16 55.08382(W) AD(2002.00) 0
 JV7191  ELLIP H (02/10/07)   99.524  (m)                       GP(2002.00)    
 JV7191  ELLIP H (08/30/02)   99.524  (m)                       GP(       ) 4 2
 JV7191  NAD 83(1991)-  39 41 17.43316(N)    077 16 55.08372(W) AD(       ) 1
 JV7191  ELLIP H (02/09/94)   99.478  (m)                       GP(       ) 4 1
 JV7191
 JV7191.Superseded values are not recommended for survey control.
 JV7191
 JV7191.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7191.See file dsdata.pdf to determine how the superseded data were derived.
 JV7191
 JV7191_MARKER: DD = SURVEY DISK
 JV7191_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7191_STAMPING: BOLL 1993
 JV7191_MARK LOGO: MD-021
 JV7191_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7191_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7191+STABILITY: SURFACE MOTION
 JV7191_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7191+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7191
 JV7191  HISTORY     - Date     Condition        Report By
 JV7191  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7191  HISTORY     - 20070531 MARK NOT FOUND   GEOCAC
 JV7191  HISTORY     - 20130614 MARK NOT FOUND   DEWDAV
 JV7191
 JV7191                          STATION DESCRIPTION
 JV7191
 JV7191'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7191'FROM THE INTERSECTION OF MD RTE 15 AND MD RTE 140 ON THE EAST SIDE OF
 JV7191'EMMITSBURG, MD, PROCEED EAST ALONG RTE 140 1.7 MILES (2.7 KM) TO THE
 JV7191'INTERSECTION OF RTE 140 AND TOMS CREEK ROAD. TURN RIGHT AND PROCEED
 JV7191'SOUTH ALONG TOMS CREEK ROAD 0.5 MILES (0.8 KM) TO THE INTERSECTION OF
 JV7191'BOLLINGER SCHOOL ROAD. TURN LEFT AND PROCEED EAST ALONG BOLLINGER
 JV7191'SCHOOL ROAD 0.2 MILES (0.3 KM) TO THE STATION ON THE RIGHT. STATION
 JV7191'IS 10 FEET (3.0 M) SOUTH OF THE CENTERLINE OF BOLLINGER SCHOOL ROAD
 JV7191'AND 48 FEET (14.6 M) EAST OF C AND P POWER POLE NO. 21. STATION IS A
 JV7191'BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND CONCRETE MONUMENT SET
 JV7191'FLUSH WITH THE GROUND.
 JV7191
 JV7191                          STATION RECOVERY (2007)
 JV7191
 JV7191'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 JV7191'NOT FOUND AFTER A VISUAL SEARCH.
 JV7191
 JV7191                          STATION RECOVERY (2013)
 JV7191
 JV7191'RECOVERY NOTE BY DEWBERRY DAVIS 2013 (GDS)
 JV7191'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6314 ***********************************************************************
 DG6314  DESIGNATION -  BOLT
 DG6314  PID         -  DG6314
 DG6314  STATE/COUNTY-  MD/TALBOT
 DG6314  COUNTRY     -  US
 DG6314  USGS QUAD   -  EASTON (2016)
 DG6314
 DG6314                         *CURRENT SURVEY CONTROL
 DG6314  ______________________________________________________________________
 DG6314* NAD 83(1986) POSITION- 38 46 32.0    (N) 076 04 06.4    (W)   HD_HELD2
 DG6314* NAVD 88 ORTHO HEIGHT -    11.734 (meters)       38.50  (feet) ADJUSTED
 DG6314  ______________________________________________________________________
 DG6314  GEOID HEIGHT    -        -34.677 (meters)                     GEOID18
 DG6314  DYNAMIC HEIGHT  -         11.727 (meters)       38.47  (feet) COMP
 DG6314  MODELED GRAVITY -    980,036.3   (mgal)                       NAVD 88
 DG6314
 DG6314  VERT ORDER      -  SECOND    CLASS I
 DG6314
 DG6314.The horizontal coordinates were established by autonomous hand held GPS
 DG6314.observations and have an estimated accuracy of +/- 10 meters.
 DG6314
 DG6314.The orthometric height was determined by differential leveling and
 DG6314.adjusted by the NATIONAL GEODETIC SURVEY
 DG6314.in September 2004.
 DG6314
 DG6314.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6314.GEOID18 height accuracy estimate available here.
 DG6314
 DG6314.Click photographs - Photos may exist for this station.
 DG6314
 DG6314.The dynamic height is computed by dividing the NAVD 88
 DG6314.geopotential number by the normal gravity value computed on the
 DG6314.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6314.degrees latitude (g = 980.6199 gals.).
 DG6314
 DG6314.The modeled gravity was interpolated from observed gravity values.
 DG6314
 DG6314;                    North         East    Units  Estimated Accuracy
 DG6314;SPC MD       -   123,504.      480,946.      MT  (+/- 10 meters HH2 GPS)
 DG6314
 DG6314_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0718892412(NAD 83)
 DG6314
 DG6314                          SUPERSEDED SURVEY CONTROL
 DG6314
 DG6314.No superseded survey control is available for this station.
 DG6314
 DG6314_MARKER: B = BOLT
 DG6314_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DG6314_SP_SET: DOOR SILL
 DG6314_MARK LOGO: NONE
 DG6314_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6314_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DG6314_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6314+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2014
 DG6314
 DG6314  HISTORY     - Date     Condition        Report By
 DG6314  HISTORY     - 2000     MONUMENTED       MDSHA
 DG6314  HISTORY     - 20041229 GOOD             USPSQD
 DG6314  HISTORY     - 20061114 GOOD             USPSQD
 DG6314  HISTORY     - 20140606 GOOD             RODCON
 DG6314
 DG6314                          STATION DESCRIPTION
 DG6314
 DG6314'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 DG6314'MARK IS LOCATED AT THE TRAIN STATION IN EASTON, AT THE INTERSECTION
 DG6314'OF GOLDSBOROUGH STREET AND EAST STREET.  TO REACH THE MARK FROM THE
 DG6314'POST OFFICE IN EASTON, GO EAST ON DOVER STREET FOR 0.3 MI (0.48 KM) TO
 DG6314'EAST STREET. TURN LEFT AND GO NORTH ON EAST STREET FOR 0.1 MI (0.16
 DG6314'KM) TO THE MARK ON THE LEFT.  THE MARK IS A BRASS BOLT SET IN THE DOOR
 DG6314'SILL FOR THE NORTHERLY MOST OF TWO DOORS LOCATED ON THE EAST SIDE OF
 DG6314'THE TRAIN STA. IT IS 176.8 FT (53.9 M) NORTH OF THE CENTER OF AUGUST
 DG6314'STREET, 140.8 FT (42.9 M) SOUTH OF THE CENTER OF GOLDSBORO STREET,
 DG6314'90.0 FT (27.4 M) WEST-NORTHWEST OF POWER POLE NUMBER 5, 16.3 FT (5.0
 DG6314'M) WEST OF THE CENTER OF A HIKER-BIKER TRAIL, 11.2 FEET (3.4 M) SOUTH
 DG6314'OF THE NORTHEAST CORNER OF THE TRAIN STA AND ABOUT 0.5 FEET (15.2 CM)
 DG6314'HIGHER THAN THE GROUND.
 DG6314
 DG6314                          STATION RECOVERY (2004)
 DG6314
 DG6314'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLH)
 DG6314'RECOVERED IN GOOD CONDITION.
 DG6314
 DG6314                          STATION RECOVERY (2006)
 DG6314
 DG6314'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 DG6314'RECOVERED IN GOOD CONDITION.
 DG6314
 DG6314                          STATION RECOVERY (2014)
 DG6314
 DG6314'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DG6314'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8773 ***********************************************************************
 HV8773  DESIGNATION -  BOLT 2378
 HV8773  PID         -  HV8773
 HV8773  STATE/COUNTY-  MD/MONTGOMERY
 HV8773  COUNTRY     -  US
 HV8773  USGS QUAD   -  WASHINGTON WEST (2016)
 HV8773
 HV8773                         *CURRENT SURVEY CONTROL
 HV8773  ______________________________________________________________________
 HV8773* NAD 83(1986) POSITION- 38 59 38.     (N) 077 01 52.     (W)   SCALED
 HV8773* NAVD 88 ORTHO HEIGHT -    98.590 (meters)      323.46  (feet) ADJUSTED
 HV8773  ______________________________________________________________________
 HV8773  GEOID HEIGHT    -        -31.966 (meters)                     GEOID18
 HV8773  DYNAMIC HEIGHT  -         98.536 (meters)      323.28  (feet) COMP
 HV8773  MODELED GRAVITY -    980,085.8   (mgal)                       NAVD 88
 HV8773
 HV8773  VERT ORDER      -  FIRST     CLASS II
 HV8773
 HV8773.The horizontal coordinates were scaled from a map and have
 HV8773.an estimated accuracy of +/- 6 seconds.
 HV8773
 HV8773.The orthometric height was determined by differential leveling and
 HV8773.adjusted by the NATIONAL GEODETIC SURVEY
 HV8773.in June 1991.
 HV8773
 HV8773.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8773.GEOID18 height accuracy estimate available here.
 HV8773
 HV8773.Click photographs - Photos may exist for this station.
 HV8773
 HV8773.The dynamic height is computed by dividing the NAVD 88
 HV8773.geopotential number by the normal gravity value computed on the
 HV8773.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8773.degrees latitude (g = 980.6199 gals.).
 HV8773
 HV8773.The modeled gravity was interpolated from observed gravity values.
 HV8773
 HV8773;                    North         East    Units  Estimated Accuracy
 HV8773;SPC MD       -   147,330.      397,310.      MT  (+/- 180 meters Scaled)
 HV8773
 HV8773_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ240180(NAD 83)
 HV8773
 HV8773                          SUPERSEDED SURVEY CONTROL
 HV8773
 HV8773  NGVD 29 (11/17/93)   98.804  (m)          324.16   (f) ADJUSTED    1 2
 HV8773
 HV8773.Superseded values are not recommended for survey control.
 HV8773
 HV8773.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8773.See file dsdata.pdf to determine how the superseded data were derived.
 HV8773
 HV8773_MARKER: B = BOLT
 HV8773_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV8773+WITH SETTING: PAVEMENT
 HV8773_SP_SET: FLOOR
 HV8773_MARK LOGO: NONE
 HV8773_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8773_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8773+STABILITY: SURFACE MOTION
 HV8773_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8773+SATELLITE: SATELLITE OBSERVATIONS - April 06, 1990
 HV8773
 HV8773  HISTORY     - Date     Condition        Report By
 HV8773  HISTORY     - UNK      MONUMENTED       NONE
 HV8773  HISTORY     - 19900406 GOOD             NGS
 HV8773
 HV8773                          STATION DESCRIPTION
 HV8773
 HV8773'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8773'IN SILVER SPRING, AT 1325 EAST-WEST HIGHWAY, AT THE NOAA COMPLEX
 HV8773'BUILDING NUMBER SSMC2, A STEEL BOLT IN THE SOUTH CORNER OF THE
 HV8773'CONCRETE FLOOR OF ROOM NUMBER 2378, 0.65 M (2.13 FT) NORTHEAST OF THE
 HV8773'SOUTHWEST WALL, AND 0.35 M (1.15 FT) NORTHWEST OF SOUTHEAST WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1463 ***********************************************************************
 JV1463  DESIGNATION -  BOLT IN BRIDGE
 JV1463  PID         -  JV1463
 JV1463  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1463  COUNTRY     -  US
 JV1463  USGS QUAD   -  BELTSVILLE (2016)
 JV1463
 JV1463                         *CURRENT SURVEY CONTROL
 JV1463  ______________________________________________________________________
 JV1463* NAD 83(1986) POSITION- 39 00 39.     (N) 076 55 03.     (W)   SCALED
 JV1463* NAVD 88 ORTHO HEIGHT -    25.564 (meters)       83.87  (feet) ADJUSTED
 JV1463  ______________________________________________________________________
 JV1463  GEOID HEIGHT    -        -32.155 (meters)                     GEOID18
 JV1463  DYNAMIC HEIGHT  -         25.551 (meters)       83.83  (feet) COMP
 JV1463  MODELED GRAVITY -    980,104.3   (mgal)                       NAVD 88
 JV1463
 JV1463  VERT ORDER      -  SECOND    CLASS 0
 JV1463
 JV1463.The horizontal coordinates were scaled from a map and have
 JV1463.an estimated accuracy of +/- 6 seconds.
 JV1463
 JV1463.The orthometric height was determined by differential leveling and
 JV1463.adjusted by the NATIONAL GEODETIC SURVEY
 JV1463.in June 1991.
 JV1463
 JV1463.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1463.GEOID18 height accuracy estimate available here.
 JV1463
 JV1463.Click photographs - Photos may exist for this station.
 JV1463
 JV1463.The dynamic height is computed by dividing the NAVD 88
 JV1463.geopotential number by the normal gravity value computed on the
 JV1463.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1463.degrees latitude (g = 980.6199 gals.).
 JV1463
 JV1463.The modeled gravity was interpolated from observed gravity values.
 JV1463
 JV1463;                    North         East    Units  Estimated Accuracy
 JV1463;SPC MD       -   149,210.      407,150.      MT  (+/- 180 meters Scaled)
 JV1463
 JV1463_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ339197(NAD 83)
 JV1463
 JV1463                          SUPERSEDED SURVEY CONTROL
 JV1463
 JV1463  NGVD 29 (11/26/84)   25.784  (m)           84.59   (f) ADJUSTED    2 0
 JV1463
 JV1463.Superseded values are not recommended for survey control.
 JV1463
 JV1463.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1463.See file dsdata.pdf to determine how the superseded data were derived.
 JV1463
 JV1463_MARKER: B = BOLT
 JV1463_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1463_SP_SET: BRIDGE
 JV1463_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1463
 JV1463  HISTORY     - Date     Condition        Report By
 JV1463  HISTORY     - UNK      MONUMENTED       CGS
 JV1463  HISTORY     - 1955     GOOD             CGS
 JV1463
 JV1463                          STATION DESCRIPTION
 JV1463
 JV1463'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV1463'AT HOLLYWOOD.
 JV1463'AT A BRIDGE OVER THE DITCH BETWEEN THE LANES AT NARAGANSETT
 JV1463'PARKWAY AT THE INTERSECTION OF LACKAWANNA STREET, IN SOUTHEAST
 JV1463'WINGWALL.  THE TOP OF A BRASS RIVET HEAD IN A 4-INCH ALUMINUM PLATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9395 ***********************************************************************
 DR9395  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9395  DESIGNATION -  BOLTON
 DR9395  PID         -  DR9395
 DR9395  STATE/COUNTY-  MD/KENT
 DR9395  COUNTRY     -  US
 DR9395  USGS QUAD   -  GALENA (2017)
 DR9395
 DR9395                         *CURRENT SURVEY CONTROL
 DR9395  ______________________________________________________________________
 DR9395* NAD 83(2011) POSITION- 39 17 45.53318(N) 075 54 11.16014(W)   ADJUSTED
 DR9395* NAD 83(2011) ELLIP HT-   -12.553 (meters)        (09/18/23)   ADJUSTED
 DR9395* NAD 83(2011) EPOCH   -  2010.00
 DR9395* NAVD 88 ORTHO HEIGHT -    20.97  (meters)       68.8   (feet) GPS OBS
 DR9395  ______________________________________________________________________
 DR9395  GEOID HEIGHT    -        -33.534 (meters)                     GEOID18
 DR9395  NAD 83(2011) X  -  1,203,825.538 (meters)                     COMP
 DR9395  NAD 83(2011) Y  - -4,793,728.079 (meters)                     COMP
 DR9395  NAD 83(2011) Z  -  4,017,792.064 (meters)                     COMP
 DR9395  LAPLACE CORR    -         -2.57  (seconds)                    DEFLEC18
 DR9395
 DR9395  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9395  Standards:
 DR9395         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9395            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9395  -------------------------------------------------------------------
 DR9395  NETWORK    0.61   1.45           0.27   0.22   0.74     -0.05856349
 DR9395  -------------------------------------------------------------------
 DR9395  Click here for local accuracies and other accuracy information.
 DR9395
 DR9395.The horizontal coordinates were established by GPS observations
 DR9395.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9395
 DR9395.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9395.been affixed to the stable North American tectonic plate. See 
 DR9395.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9395
 DR9395.The horizontal coordinates are valid at the epoch date displayed above
 DR9395.which is a decimal equivalence of Year/Month/Day.
 DR9395
 DR9395.The orthometric height was determined by GPS observations and a
 DR9395.high-resolution geoid model using precise GPS observation and
 DR9395.processing techniques.
 DR9395
 DR9395.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9395.GEOID18 height accuracy estimate available here.
 DR9395
 DR9395.Click photographs - Photos may exist for this station.
 DR9395
 DR9395.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9395
 DR9395.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9395
 DR9395.The ellipsoidal height was determined by GPS observations
 DR9395.and is referenced to NAD 83.
 DR9395
 DR9395. The following values were computed from the NAD 83(2011) position.
 DR9395
 DR9395;                    North         East     Units Scale Factor Converg.
 DR9395;SPC MD       -   181,432.790   494,618.864   MT  0.99997668   +0 41 18.4
 DR9395;SPC MD       -   595,250.75  1,622,762.06   sFT  0.99997668   +0 41 18.4
 DR9395;UTM  18      - 4,350,011.510   422,125.191   MT  0.99967467   -0 34 19.1
 DR9395
 DR9395!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9395!SPC MD       -   1.00000197  x   0.99997668  =   0.99997865
 DR9395!UTM  18      -   1.00000197  x   0.99967467  =   0.99967664
 DR9395
 DR9395_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2212550011(NAD 83)
 DR9395
 DR9395                          SUPERSEDED SURVEY CONTROL
 DR9395
 DR9395.No superseded survey control is available for this station.
 DR9395
 DR9395_MARKER: DD = SURVEY DISK
 DR9395_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9395_STAMPING: BOLTON 2021
 DR9395_MARK LOGO: MD-029
 DR9395_PROJECTION: FLUSH
 DR9395_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9395_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9395+STABILITY: SURFACE MOTION
 DR9395_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9395+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9395
 DR9395  HISTORY     - Date     Condition        Report By
 DR9395  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9395  HISTORY     - 20250821 GOOD             PROFLN
 DR9395
 DR9395                          STATION DESCRIPTION
 DR9395
 DR9395'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9395'THE MARK IS LOCATED ABOUT 10.6 MI (17.1 KM) NORTHEAST OF CHESTERTOWN,
 DR9395'4.3 MI (6.9 KM) WEST-SOUTHWEST OF MASSEY, 3.9 MI (6.3 KM)
 DR9395'NORTH-NORTHEAST OF CRUMPTON AND 3.3 MI (5.3 KM) SOUTH-SOUTHWEST OF
 DR9395'GALENA.
 DR9395'
 DR9395'TO REACH THE MARK FROM THE JUNCTION OF MD 313 AND MD 290 S, GO
 DR9395'SOUTHWEST ON MD 290 S FOR 2.87 MI (4.62 KM) TO AN INTERSECTION.  TURN
 DR9395'RIGHT AND GO NORTHWEST ON BOLTON ROAD FOR 0.03 MI (0.05 KM) TO THE
 DR9395'MARK ON THE LEFT.
 DR9395'
 DR9395'THE MARK IS 164.9 FT (50.3 M) NORTH-NORTHWEST OF A VERIZON FIBER OPTIC
 DR9395'PEDESTAL WITH NO NUMBER, 145.5 FT (44.3 M) NORTH-NORTHWEST OF THE
 DR9395'INTERSECTION OF CHESTERVILLE ROAD AND BOLTON ROAD, 108.4 FT (33.0 M)
 DR9395'NORTH-NORTHWEST OF A VERIZON FIBER OPTIC PEDESTAL NUMBERED 28, 32.5 FT
 DR9395'(9.9 M) SOUTHWEST OF A NO OUTLET SIGN, 14.1 FT (4.3 M) SOUTH-SOUTHWEST
 DR9395'OF THE CENTERLINE OF BOLTON ROAD SET IN THE TOP OF A 12-IN (30 CM)
 DR9395'ROUND CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
 DR9395
 DR9395                          STATION RECOVERY (2025)
 DR9395
 DR9395'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9395'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9396 ***********************************************************************
 DR9396  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9396  DESIGNATION -  BOLTON AZ MK
 DR9396  PID         -  DR9396
 DR9396  STATE/COUNTY-  MD/KENT
 DR9396  COUNTRY     -  US
 DR9396  USGS QUAD   -  GALENA (2017)
 DR9396
 DR9396                         *CURRENT SURVEY CONTROL
 DR9396  ______________________________________________________________________
 DR9396* NAD 83(2011) POSITION- 39 17 48.70696(N) 075 54 17.04666(W)   ADJUSTED
 DR9396* NAD 83(2011) ELLIP HT-   -13.693 (meters)        (09/18/23)   ADJUSTED
 DR9396* NAD 83(2011) EPOCH   -  2010.00
 DR9396* NAVD 88 ORTHO HEIGHT -    19.83  (meters)       65.1   (feet) GPS OBS
 DR9396  ______________________________________________________________________
 DR9396  GEOID HEIGHT    -        -33.531 (meters)                     GEOID18
 DR9396  NAD 83(2011) X  -  1,203,673.419 (meters)                     COMP
 DR9396  NAD 83(2011) Y  - -4,793,701.455 (meters)                     COMP
 DR9396  NAD 83(2011) Z  -  4,017,867.086 (meters)                     COMP
 DR9396  LAPLACE CORR    -         -2.57  (seconds)                    DEFLEC18
 DR9396
 DR9396  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9396  Standards:
 DR9396         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9396            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9396  -------------------------------------------------------------------
 DR9396  NETWORK    0.61   1.47           0.27   0.23   0.75     -0.04636072
 DR9396  -------------------------------------------------------------------
 DR9396  Click here for local accuracies and other accuracy information.
 DR9396
 DR9396.The horizontal coordinates were established by GPS observations
 DR9396.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9396
 DR9396.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9396.been affixed to the stable North American tectonic plate. See 
 DR9396.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9396
 DR9396.The horizontal coordinates are valid at the epoch date displayed above
 DR9396.which is a decimal equivalence of Year/Month/Day.
 DR9396
 DR9396.The orthometric height was determined by GPS observations and a
 DR9396.high-resolution geoid model using precise GPS observation and
 DR9396.processing techniques.
 DR9396
 DR9396.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9396.GEOID18 height accuracy estimate available here.
 DR9396
 DR9396.Click photographs - Photos may exist for this station.
 DR9396
 DR9396.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9396
 DR9396.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9396
 DR9396.The ellipsoidal height was determined by GPS observations
 DR9396.and is referenced to NAD 83.
 DR9396
 DR9396. The following values were computed from the NAD 83(2011) position.
 DR9396
 DR9396;                    North         East     Units Scale Factor Converg.
 DR9396;SPC MD       -   181,528.964   494,476.649   MT  0.99997680   +0 41 14.7
 DR9396;SPC MD       -   595,566.28  1,622,295.47   sFT  0.99997680   +0 41 14.7
 DR9396;UTM  18      - 4,350,110.759   421,985.168   MT  0.99967494   -0 34 22.9
 DR9396
 DR9396!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9396!SPC MD       -   1.00000215  x   0.99997680  =   0.99997895
 DR9396!UTM  18      -   1.00000215  x   0.99967494  =   0.99967709
 DR9396
 DR9396_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2198550110(NAD 83)
 DR9396
 DR9396                          SUPERSEDED SURVEY CONTROL
 DR9396
 DR9396.No superseded survey control is available for this station.
 DR9396
 DR9396_MARKER: DD = SURVEY DISK
 DR9396_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9396_STAMPING: BOLTON AZ 2021
 DR9396_MARK LOGO: MD-029
 DR9396_PROJECTION: FLUSH
 DR9396_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9396_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9396+STABILITY: SURFACE MOTION
 DR9396_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9396+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9396
 DR9396  HISTORY     - Date     Condition        Report By
 DR9396  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9396  HISTORY     - 20250821 GOOD             PROFLN
 DR9396
 DR9396                          STATION DESCRIPTION
 DR9396
 DR9396'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9396'THE MARK IS LOCATED ABOUT 10.6 MI (17.1 KM) NORTHEAST OF CHESTERTOWN,
 DR9396'4.3 MI (6.9 KM) WEST-SOUTHWEST OF MASSEY, 3.9 MI (6.3 KM)
 DR9396'NORTH-NORTHEAST OF CRUMPTON AND 3.3 MI (5.3 KM) SOUTH-SOUTHWEST OF
 DR9396'GALENA.
 DR9396'
 DR9396'TO REACH THE MARK FROM THE JUNCTION OF MD 313 AND MD 290 S, GO
 DR9396'SOUTHWEST ON MD 290 S FOR 2.87 MI (4.62 KM) TO AN INTERSECTION.  TURN
 DR9396'RIGHT AND GO NORTHWEST ON BOLTON ROAD FOR 0.17 MI (0.27 KM) TO THE
 DR9396'MARK ON THE LEFT.
 DR9396'
 DR9396'THE MARK 68.1 FT (20.8 M) EAST-SOUTHEAST OF THE NORTH END OF A 12"
 DR9396'CORRUGATED METAL PIPE, 64.7 FT (19.7 M) EAST-SOUTHEAST OF THE SOUTH
 DR9396'END OF A 12" CORRUGATED METAL PIPE, 26.9 FT (8.2 M) EAST-SOUTHEAST OF
 DR9396'THE CENTERLINE OF A DIRT ENTRANCE, 15.2 FT (4.6 M) SOUTH-SOUTHWEST OF
 DR9396'THE CENTERLINE OF BOLTON ROAD SET IN THE TOP OF A 12-IN (30 CM) ROUND
 DR9396'CONCRETE POST AND ABOUT LEVEL WITH THE GROUND.
 DR9396
 DR9396                          STATION RECOVERY (2025)
 DR9396
 DR9396'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9396'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6714 ***********************************************************************
 HV6714  DESIGNATION -  BON
 HV6714  PID         -  HV6714
 HV6714  STATE/COUNTY-  MD/CALVERT
 HV6714  COUNTRY     -  US
 HV6714  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6714
 HV6714                         *CURRENT SURVEY CONTROL
 HV6714  ______________________________________________________________________
 HV6714* NAD 83(1991) POSITION- 38 19 27.97924(N) 076 26 34.78941(W)   ADJUSTED
 HV6714* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6714  ______________________________________________________________________
 HV6714  GEOID HEIGHT    -        -34.427 (meters)                     GEOID18
 HV6714  LAPLACE CORR    -         -5.19  (seconds)                    DEFLEC18
 HV6714  HORZ ORDER      -  SECOND
 HV6714
 HV6714.The horizontal coordinates were established by classical geodetic methods
 HV6714.and adjusted by the National Geodetic Survey in January 1992.
 HV6714
 HV6714.The orthometric height was scaled from a topographic map.
 HV6714
 HV6714.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6714.GEOID18 height accuracy estimate available here.
 HV6714
 HV6714.Click photographs - Photos may exist for this station.
 HV6714
 HV6714.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6714
 HV6714. The following values were computed from the NAD 83(1991) position.
 HV6714
 HV6714;                    North         East     Units Scale Factor Converg.
 HV6714;SPC MD       -    73,164.193   448,706.113   MT  0.99999584   +0 20 58.5
 HV6714;SPC MD       -   240,039.52  1,472,129.97   sFT  0.99999584   +0 20 58.5
 HV6714;UTM  18      - 4,242,798.235   373,865.789   MT  0.99979594   -0 53 41.8
 HV6714
 HV6714!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6714!SPC MD       -   1.00000528  x   0.99999584  =   1.00000112
 HV6714!UTM  18      -   1.00000528  x   0.99979594  =   0.99980122
 HV6714
 HV6714:                Primary Azimuth Mark                     Grid Az
 HV6714:SPC MD       -  DRUM PT LIGHTHOUSE                       105 55 48.5
 HV6714:UTM  18      -  DRUM PT LIGHTHOUSE                       107 10 28.8
 HV6714
 HV6714_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7386542798(NAD 83)
 HV6714
 HV6714|---------------------------------------------------------------------|
 HV6714| PID    Reference Object                     Distance      Geod. Az  |
 HV6714|                                                           dddmmss.s |
 HV6714| HV6715 BAREDA HOUSE CUPOLA                 APPROX. 1.4 KM 0932301.2 |
 HV6714| HV6710 DRUM PT LIGHTHOUSE                  APPROX. 2.0 KM 1061647.0 |
 HV6714| CX2109 BON RM                                             35626     |
 HV6714|---------------------------------------------------------------------|
 HV6714
 HV6714                          SUPERSEDED SURVEY CONTROL
 HV6714
 HV6714  NAD 83(1986)-  38 19 27.97901(N)    076 26 34.80435(W) AD(       ) 2
 HV6714  NAD 27      -  38 19 27.53400(N)    076 26 35.96700(W) AD(       ) 2
 HV6714  USSD        -  38 19 27.90200(N)    076 26 35.73500(W) AD(       ) 3
 HV6714
 HV6714.Superseded values are not recommended for survey control.
 HV6714
 HV6714.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6714.See file dsdata.pdf to determine how the superseded data were derived.
 HV6714
 HV6714_MARKER: N = NAIL
 HV6714_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6714_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6714
 HV6714  HISTORY     - Date     Condition        Report By
 HV6714  HISTORY     - 1907     MONUMENTED       MDSFC
 HV6714  HISTORY     - 1930     SEE DESCRIPTION  MDDNR
 HV6714  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6714
 HV6714                          STATION DESCRIPTION
 HV6714
 HV6714'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (OWF)
 HV6714'STATION IS ON THE N SHORE OF PATUXENT RIVER, ABOUT 1-1/4 MILES
 HV6714'WNW OF DRUM POINT LIGHT AND 1/2 MILE ENE OF SOLOMONS ISLAND, IN
 HV6714'A LOCALITY CALLED ROUSBY HALL.  STATION IS ON CULTIVATED LAND,
 HV6714'ABOUT 5 FEET ABOVE HIGH-WATER, ABOUT 7 YARDS N OF SHORE, ABOUT
 HV6714'90 YARDS SE OF A 1 1/2-STORY HOUSE ON LAND 10 FEET HIGHER THAN
 HV6714'STATION, AND ABOUT 75 YARDS S OF A 1 1/2-STORY BRICK HOUSE.
 HV6714'STATION MARKED UNDERGROUND BY NOZZLE OF BOTTLE.  ABOVE THIS IS
 HV6714'6-INCH TILE PIPE, 20 INCHES LONG, FILLED WITH AND SET IN
 HV6714'CEMENT, ITS TOP FLUSH WITH GROUND, AND LARGE NAIL IN CENTER.
 HV6714'REFERENCE MARK MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 HV6714'A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6714'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV6714'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6714'COUNTER-SUNK IN TOP OF POST.  IT IS 0.67 METER (2.20 FEET)
 HV6714'FROM STATION IN AZIMUTH 225 DEG 29 MIN.  DISTANCES AND
 HV6714'AZIMUTHS FROM THE STATION TO OTHER POINTS OF REFERENCE ARE AS
 HV6714'FOLLOWS--LEFT END OF PEAK OF ROOF ON HOUSE WITH PIAZZA, 2
 HV6714'1/2 MILES, 8 DEG 46 MIN.  NEAR POINT OF ROOF OF HODGDONS
 HV6714'HOUSE WITH SQUARE TOWER, 2-1/4 MILES, 15 DEG 31 MIN.
 HV6714'CHIMNEY ON END OF HOUSE, 3/4 MILE, 60 DEG 14 MIN.  LEFT
 HV6714'CHIMNEY ON WEEMS HOUSE, 1/4 MILE, 85 DEG 54 MIN.  LARGE CHIMNEY
 HV6714'OF W. BOWENS HOUSE, 90.66 METERS (297.4 FEET), 141 DEG
 HV6714'57 MIN.  RIGHT CHIMNEY ON WOODEN HOUSE, 90 YARDS, 150 DEG 18
 HV6714'MIN.  LEFT SIDE OF CHIMNEY ON BRICK HOUSE, 75 YARDS, 176 DEG
 HV6714'11 MIN.  WHITE CHIMNEY AT W END OF ONE-STORY HOUSE, 71.15
 HV6714'METERS (233.4 FEET), 176 DEG 26 MIN.  NEAR END OF PEAK OF
 HV6714'HOUSE ON BLUFF BETWEEN TREES, 1/2 MILE, 263 DEG 07 MIN.  SMOKE
 HV6714'PIPE ON OYSTER WATCH HOUSE, 1/2 MILE, 319 DEG 49 MIN.  LEFT
 HV6714'END OF PEAK OF ROOF ON 2 1/2-STORY BUILDING AT PEARSONS, 2-1/4
 HV6714'MILES, 338 DEG 23 MIN.
 HV6714
 HV6714                          STATION RECOVERY (1930)
 HV6714
 HV6714'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6714'STATION WASHED AWAY BUT TENANT ON FARM SHOWED US THE
 HV6714'LOCALITY.  WE SET UP NEW STATION AND MARKED IT WITH IRON PIPE.  A
 HV6714'CUT-IN SHOWED APPROXIMATELY THE SAME LOCATION.
 HV6714
 HV6714                          STATION RECOVERY (1942)
 HV6714
 HV6714'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6714'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE
 HV6714'HOUR, BUT NO TRACE OF IT COULD BE FOUND.
 HV6714'
 HV6714'THE SHORE HAS WASHED ABOUT 30 FEET SINCE 1930.  MR. GREENFIELD,
 HV6714'A NATIVE, STATED THIS WHOLE SHORELINE WAS WASHED MOSTLY IN 1937
 HV6714'AND 1938.
 HV6714'
 HV6714'IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6719 ***********************************************************************
 JV6719  DESIGNATION -  BONAIRE
 JV6719  PID         -  JV6719
 JV6719  STATE/COUNTY-  MD/HARFORD
 JV6719  COUNTRY     -  US
 JV6719  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6719
 JV6719                         *CURRENT SURVEY CONTROL
 JV6719  ______________________________________________________________________
 JV6719* NAD 83(2011) POSITION- 39 34 52.89493(N) 076 25 14.05260(W)   ADJUSTED
 JV6719* NAD 83(2011) ELLIP HT-   144.618 (meters)        (06/27/12)   ADJUSTED
 JV6719* NAD 83(2011) EPOCH   -  2010.00
 JV6719* NAVD 88 ORTHO HEIGHT -   177.3   (meters)      582.    (feet) GPS OBS
 JV6719  ______________________________________________________________________
 JV6719  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6719  GEOID HEIGHT    -        -32.940 (meters)                     GEOID93
 JV6719  GEOID HEIGHT    -        -32.619 (meters)                     GEOID18
 JV6719  NAD 83(2011) X  -  1,155,784.927 (meters)                     COMP
 JV6719  NAD 83(2011) Y  - -4,784,958.104 (meters)                     COMP
 JV6719  NAD 83(2011) Z  -  4,042,361.691 (meters)                     COMP
 JV6719  LAPLACE CORR    -         -2.68  (seconds)                    DEFLEC18
 JV6719
 JV6719  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6719  Standards:
 JV6719         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6719            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6719  -------------------------------------------------------------------
 JV6719  NETWORK    1.18   2.90           0.51   0.43   1.48      0.34041728
 JV6719  -------------------------------------------------------------------
 JV6719  Click here for local accuracies and other accuracy information.
 JV6719
 JV6719.The horizontal coordinates were established by GPS observations
 JV6719.and adjusted by the National Geodetic Survey in June 2012.
 JV6719
 JV6719.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6719.been affixed to the stable North American tectonic plate. See 
 JV6719.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6719
 JV6719.The horizontal coordinates are valid at the epoch date displayed above
 JV6719.which is a decimal equivalence of Year/Month/Day.
 JV6719
 JV6719.The orthometric height was determined by GPS observations and a
 JV6719.high-resolution geoid model.
 JV6719
 JV6719.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6719.GEOID18 height accuracy estimate available here.
 JV6719
 JV6719.Click photographs - Photos may exist for this station.
 JV6719
 JV6719.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6719
 JV6719.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6719
 JV6719.The ellipsoidal height was determined by GPS observations
 JV6719.and is referenced to NAD 83.
 JV6719
 JV6719. The following values were computed from the NAD 83(2011) position.
 JV6719
 JV6719;                    North         East     Units Scale Factor Converg.
 JV6719;SPC MD       -   212,706.082   449,781.526   MT  1.00002562   +0 21 49.2
 JV6719;SPC MD       -   697,853.20  1,475,658.22   sFT  1.00002562   +0 21 49.2
 JV6719;UTM  18      - 4,382,257.692   378,000.922   MT  0.99978325   -0 54 18.9
 JV6719
 JV6719!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6719!SPC MD       -   0.99997731  x   1.00002562  =   1.00000293
 JV6719!UTM  18      -   0.99997731  x   0.99978325  =   0.99976057
 JV6719
 JV6719_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7800082257(NAD 83)
 JV6719
 JV6719|---------------------------------------------------------------------|
 JV6719| PID    Reference Object                     Distance      Geod. Az  |
 JV6719|                                                           dddmmss.s |
 JV6719| JV6720 BONAIRE AZ MK                       372.710 METERS 11736     |
 JV6719|---------------------------------------------------------------------|
 JV6719
 JV6719                          SUPERSEDED SURVEY CONTROL
 JV6719
 JV6719  NAD 83(2007)-  39 34 52.89526(N)    076 25 14.05323(W) AD(2002.00) 0
 JV6719  ELLIP H (02/10/07)  144.636  (m)                       GP(2002.00)    
 JV6719  ELLIP H (08/30/02)  144.675  (m)                       GP(       ) 4 2
 JV6719  NAD 83(1991)-  39 34 52.89532(N)    076 25 14.05236(W) AD(       ) 1
 JV6719  ELLIP H (01/27/92)  144.619  (m)                       GP(       ) 4 1
 JV6719  NAD 83(1986)-  39 34 52.88854(N)    076 25 14.05934(W) AD(       ) 1
 JV6719  NGVD 29 (06/18/91)  177.5    (m)  UNKNOWN  model used  GPS OBS        
 JV6719
 JV6719.Superseded values are not recommended for survey control.
 JV6719
 JV6719.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6719.See file dsdata.pdf to determine how the superseded data were derived.
 JV6719
 JV6719_MARKER: DD = SURVEY DISK
 JV6719_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6719_STAMPING: BONAIRE 65 1989
 JV6719_MARK LOGO: MD-025
 JV6719_PROJECTION: RECESSED 3 CENTIMETERS
 JV6719_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6719_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6719+STABILITY: SURFACE MOTION
 JV6719_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6719+SATELLITE: SATELLITE OBSERVATIONS - January 17, 2023
 JV6719
 JV6719  HISTORY     - Date     Condition        Report By
 JV6719  HISTORY     - 1989     MONUMENTED       RDA
 JV6719  HISTORY     - 19931209 GOOD             GEOMET
 JV6719  HISTORY     - 20230117 GOOD             BASE9
 JV6719
 JV6719                          STATION DESCRIPTION
 JV6719
 JV6719'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6719'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 5
 JV6719'MILES NORTHWEST OF BEL AIR.
 JV6719'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 23 AND
 JV6719'STATE HIGHWAY 24 PROCEED WEST ALONG HIGHWAY 23 1.9 MILES TO ITS
 JV6719'INTERSECTION WITH HIGH POINT ROAD.  TURN RIGHT AND PROCEED NORTH ALONG
 JV6719'HIGH POINT ROAD 0.5 MILES TO ITS INTERSECTION WITH JARRETTSVILLE ROAD
 JV6719'AND THE STATION ON THE NORTHEAST SIDE OF THE INTERSECTION.
 JV6719'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6719'ABOUT 1 INCH BELOW GROUND STAMPED 65 BONAIRE 1989.  THE STATION IS
 JV6719'26.5 FEET NORTH OF THE CENTERLINE OF JARRETTSVILLE ROAD, 22.8 FEET
 JV6719'NORTHWEST OF G AND E POWER POLE NUMBER 26335, 46.1 FEET EAST OF THE
 JV6719'CENTERLINE OF PRIVATE DRIVE BOX 1118.
 JV6719
 JV6719                          STATION RECOVERY (1993)
 JV6719
 JV6719'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6719'RECOVERED IN GOOD CONDITION.
 JV6719
 JV6719                          STATION RECOVERY (2023)
 JV6719
 JV6719'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2023 (DRD)
 JV6719'THE MARK IS 0.37 M (1.2 FT) SOUTH OF A CARSONITE WITNESS POST.  G ND E
 JV6719'POWER POLE HAS BEEN RENUMBERED, NOW 263351.  MARK STILL SLIGHTLY
 JV6719'RECESSED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6720 ***********************************************************************
 JV6720  DESIGNATION -  BONAIRE AZ MK
 JV6720  PID         -  JV6720
 JV6720  STATE/COUNTY-  MD/HARFORD
 JV6720  COUNTRY     -  US
 JV6720  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6720
 JV6720                         *CURRENT SURVEY CONTROL
 JV6720  ______________________________________________________________________
 JV6720* NAD 83(2011) POSITION- 39 34 47.29545(N) 076 25 00.21273(W)   ADJUSTED
 JV6720* NAD 83(2011) ELLIP HT-   123.536 (meters)        (06/27/12)   ADJUSTED
 JV6720* NAD 83(2011) EPOCH   -  2010.00
 JV6720* NAVD 88 ORTHO HEIGHT -   156.1   (meters)      512.    (feet) VERTCON3
 JV6720  ______________________________________________________________________
 JV6720  GEOID HEIGHT    -        -32.625 (meters)                     GEOID18
 JV6720  NAD 83(2011) X  -  1,156,128.010 (meters)                     COMP
 JV6720  NAD 83(2011) Y  - -4,784,971.707 (meters)                     COMP
 JV6720  NAD 83(2011) Z  -  4,042,215.156 (meters)                     COMP
 JV6720  LAPLACE CORR    -         -2.65  (seconds)                    DEFLEC18
 JV6720
 JV6720  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6720  Standards:
 JV6720         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6720            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6720  -------------------------------------------------------------------
 JV6720  NETWORK    1.20   3.10           0.51   0.45   1.58      0.34778259
 JV6720  -------------------------------------------------------------------
 JV6720  Click here for local accuracies and other accuracy information.
 JV6720
 JV6720.The horizontal coordinates were established by GPS observations
 JV6720.and adjusted by the National Geodetic Survey in June 2012.
 JV6720
 JV6720.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6720.been affixed to the stable North American tectonic plate. See 
 JV6720.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6720
 JV6720.The horizontal coordinates are valid at the epoch date displayed above
 JV6720.which is a decimal equivalence of Year/Month/Day.
 JV6720
 JV6720.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6720.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6720
 JV6720.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6720.GEOID18 height accuracy estimate available here.
 JV6720
 JV6720.Click photographs - Photos may exist for this station.
 JV6720
 JV6720.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6720
 JV6720.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6720
 JV6720.The ellipsoidal height was determined by GPS observations
 JV6720.and is referenced to NAD 83.
 JV6720
 JV6720. The following values were computed from the NAD 83(2011) position.
 JV6720
 JV6720;                    North         East     Units Scale Factor Converg.
 JV6720;SPC MD       -   212,535.492   450,112.916   MT  1.00002529   +0 21 57.9
 JV6720;SPC MD       -   697,293.53  1,476,745.46   sFT  1.00002529   +0 21 57.9
 JV6720;UTM  18      - 4,382,079.849   378,328.374   MT  0.99978226   -0 54 10.0
 JV6720
 JV6720!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6720!SPC MD       -   0.99998062  x   1.00002529  =   1.00000591
 JV6720!UTM  18      -   0.99998062  x   0.99978226  =   0.99976288
 JV6720
 JV6720_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7832882079(NAD 83)
 JV6720
 JV6720|---------------------------------------------------------------------|
 JV6720| PID    Reference Object                     Distance      Geod. Az  |
 JV6720|                                                           dddmmss.s |
 JV6720| JV6719 BONAIRE                             372.710 METERS 29736     |
 JV6720|---------------------------------------------------------------------|
 JV6720
 JV6720                          SUPERSEDED SURVEY CONTROL
 JV6720
 JV6720  NAD 83(2007)-  39 34 47.29533(N)    076 25 00.21408(W) AD(2002.00) 0
 JV6720  ELLIP H (02/10/07)  123.520  (m)                       GP(2002.00)    
 JV6720  ELLIP H (09/18/02)  123.555  (m)                       GP(       ) 4 2
 JV6720  NAD 83(1991)-  39 34 47.29538(N)    076 25 00.21320(W) AD(       ) 1
 JV6720  ELLIP H (01/27/92)  123.504  (m)                       GP(       ) 4 1
 JV6720  NAD 83(1986)-  39 34 47.28860(N)    076 25 00.22018(W) AD(       ) 1
 JV6720  NGVD 29 (06/18/91)  156.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6720
 JV6720.Superseded values are not recommended for survey control.
 JV6720
 JV6720.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6720.See file dsdata.pdf to determine how the superseded data were derived.
 JV6720
 JV6720_MARKER: DZ = AZIMUTH MARK DISK
 JV6720_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6720_STAMPING: 65 BONAIRE 1989
 JV6720_MARK LOGO: MD-025
 JV6720_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6720_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6720+STABILITY: SURFACE MOTION
 JV6720_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6720+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6720
 JV6720  HISTORY     - Date     Condition        Report By
 JV6720  HISTORY     - 1989     MONUMENTED       RDA
 JV6720
 JV6720                          STATION DESCRIPTION
 JV6720
 JV6720'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6720'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED EAST ALONG
 JV6720'JARRETTSVILE ROAD 0.23 MILES TO THE MARK ON THE RIGHT.
 JV6720'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6720'ABOUT 1 INCH BELOW GROUND STAMPED 65 BONAIRE 1989.  THE MARK IS 17.2
 JV6720'FEET SOUTHWEST OF THE CENTERLINE OF JARRETTSVILLE ROAD, 133.0 FEET
 JV6720'SOUTHEAST OF G AND E POWER POLE NUMBER 71555, 87.4 FEET NORTHWEST OF G
 JV6720'AND E POWER POLE NUMBER 71559 AND 1222.80 FEET FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5823 ***********************************************************************
 HV5823  DESIGNATION -  BONNET
 HV5823  PID         -  HV5823
 HV5823  STATE/COUNTY-  MD/QUEEN ANNES
 HV5823  COUNTRY     -  US
 HV5823  USGS QUAD   -  QUEENSTOWN (2016)
 HV5823
 HV5823                         *CURRENT SURVEY CONTROL
 HV5823  ______________________________________________________________________
 HV5823* NAD 83(1991) POSITION- 38 56 30.00398(N) 076 14 05.96064(W)   ADJUSTED
 HV5823* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5823  ______________________________________________________________________
 HV5823  GEOID HEIGHT    -        -33.853 (meters)                     GEOID18
 HV5823  LAPLACE CORR    -         -4.49  (seconds)                    DEFLEC18
 HV5823  HORZ ORDER      -  SECOND
 HV5823
 HV5823.The horizontal coordinates were established by classical geodetic methods
 HV5823.and adjusted by the National Geodetic Survey in January 1992.
 HV5823
 HV5823.The orthometric height was scaled from a topographic map.
 HV5823
 HV5823.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5823.GEOID18 height accuracy estimate available here.
 HV5823
 HV5823.Click photographs - Photos may exist for this station.
 HV5823
 HV5823.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5823
 HV5823. The following values were computed from the NAD 83(1991) position.
 HV5823
 HV5823;                    North         East     Units Scale Factor Converg.
 HV5823;SPC MD       -   141,808.665   466,320.467   MT  0.99995051   +0 28 48.5
 HV5823;SPC MD       -   465,250.60  1,529,919.73   sFT  0.99995051   +0 28 48.5
 HV5823;UTM  18      - 4,311,028.489   392,970.620   MT  0.99974106   -0 46 34.7
 HV5823
 HV5823!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5823!SPC MD       -   1.00000535  x   0.99995051  =   0.99995586
 HV5823!UTM  18      -   1.00000535  x   0.99974106  =   0.99974641
 HV5823
 HV5823:                Primary Azimuth Mark                     Grid Az
 HV5823:SPC MD       -  CRAB ALLEY NECK TANK                     231 01 06.1
 HV5823:UTM  18      -  CRAB ALLEY NECK TANK                     232 16 29.3
 HV5823
 HV5823_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9297011028(NAD 83)
 HV5823
 HV5823|---------------------------------------------------------------------|
 HV5823| PID    Reference Object                     Distance      Geod. Az  |
 HV5823|                                                           dddmmss.s |
 HV5823| HV5827 BONNET 2                              6.263 METERS 11708     |
 HV5823| HV5759 PARSON I WINDMILL                   APPROX. 3.7 KM 1955304.0 |
 HV5823| HV6231 WADES POINT RADIO TOWER             APPROX.14.2 KM 1995905.8 |
 HV5823| HV6215 BARN CUPOLA                         APPROX. 2.8 KM 2213453.2 |
 HV5823| HV6219 CRAB ALLEY NECK TANK                APPROX. 2.7 KM 2312954.6 |
 HV5823| HV5826 KENT NARROWS ELEC TWR WEST          APPROX. 3.4 KM 3395110.4 |
 HV5823| CX2111 BONNET RM 2                          25.461 METERS 34008     |
 HV5823| CX2110 BONNET RM 1                          15.071 METERS 34020     |
 HV5823| HV5825 KENT NARROWS ELEC TWR EAST          APPROX. 3.3 KM 3424102.1 |
 HV5823|---------------------------------------------------------------------|
 HV5823
 HV5823                          SUPERSEDED SURVEY CONTROL
 HV5823
 HV5823  NAD 83(1986)-  38 56 29.99951(N)    076 14 05.97312(W) AD(       ) 2
 HV5823  NAD 27      -  38 56 29.58400(N)    076 14 07.14600(W) AD(       ) 2
 HV5823  USSD        -  38 56 29.98000(N)    076 14 06.94000(W) AD(       ) 3
 HV5823
 HV5823.Superseded values are not recommended for survey control.
 HV5823
 HV5823.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5823.See file dsdata.pdf to determine how the superseded data were derived.
 HV5823
 HV5823_MARKER: Z = SEE DESCRIPTION
 HV5823_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5823
 HV5823  HISTORY     - Date     Condition        Report By
 HV5823  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5823  HISTORY     - 1932     GOOD             CGS
 HV5823  HISTORY     - 1938     GOOD             CGS
 HV5823  HISTORY     - 1961     POOR             CGS
 HV5823  HISTORY     - 1973     POOR             MDDNR
 HV5823  HISTORY     - 1974     SEE DESCRIPTION  NGS
 HV5823
 HV5823                          STATION DESCRIPTION
 HV5823
 HV5823'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5823'STATION IS ON EASTERN SHORE OF PROSPECT BAY, ON HOODS POINT, ABOUT
 HV5823'1-1/2 MILES SE OF HOG ISLAND, 1/2 MILE W OF PINEY POINT, ON MARSH
 HV5823'GROUND, ABOUT 1 FOOT ABOVE HIGH WATER, 21 YARDS W OF SHORE, 12
 HV5823'YARDS W OF INLET, AND 55 YARDS NE OF EXTREME END OF HOODS POINT.
 HV5823'STATION IS MARKED BY HOLE IN CENTER OF TOP OF MARYLAND SHELL FISH
 HV5823'SURVEY STANDARD MONUMENT, AND 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5823'LONG, WITH TOP PROJECTING ABOUT 6 INCHES ABOVE SURFACE OF GROUND.
 HV5823'LETTERS M.S.F.C. AND U.S.C.S. COUNTER-SUNK IN TOP OF POST.
 HV5823'SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE BURIED WITH TOP
 HV5823'2 INCHES BELOW BASE OF MONUMENT. DISTANCES AND BEARINGS TO VARIOUS
 HV5823'POINTS OF REFERENCE ARE AS FOLLOWS--S CHIMNEY OF HOUSE ON KENT
 HV5823'ISLAND, 1-3/4 MILES, 42 DEG 53 MIN CUPOLA ON BARN, 1-3/4 MILES, S
 HV5823'72 DEG 38 MIN W.  CHIMNEY OF HOUSE, 1-1/4 MILES, N 76 DEG 20 MIN
 HV5823'W.  E GABLE OF BARN, 1-1/4 MILES, N 72 DEG 7 MIN W.  N CHIMNEY OF
 HV5823'HOUSE, 2 MILES, N 36 DEG 27 MIN W.  S GABLE OF BARN, 2-1/8 MILES,
 HV5823'N 9 DEG 48 MIN W. CHIMNEY ON SMALL HOUSE, 5/8 MILE, 217 DEG 26
 HV5823'MIIN.  W GABLE OF HOUSE 1-5/8 MILES, S 81 DEG 25 MIN E.  CHIMNEY
 HV5823'OF SMALL HOUSE, 2-1/2 MILES, S 41 DEG 18 MIN E.
 HV5823
 HV5823                          STATION RECOVERY (1932)
 HV5823
 HV5823'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (JAB)
 HV5823'STATION IS ON EASTERN SHORE OF PROSPECT BAY, ON HOODS POINT, ABOUT
 HV5823'1-1/2 MILES SE OF HOG ISLAND AND 1/2 MILE W OF PINEY POINT, ON
 HV5823'MARSH GROUND, ABOUT 1 FOOT ABOVE HIGH WATER, 8 YARDS W OF SHORE,
 HV5823'35 YARDS FROM EXTREME END OF HOODS POINT, AND 13 YARDS E OF SHORE.
 HV5823'STATION MARK IS CENTER OF STANDARD CEMENT MONUMENT OF MARYLAND
 HV5823'SHELL FISH SURVEY, WITH TOP PROJECTING 3 INCHES ABOVE SURFACE OF
 HV5823'GROUND.  STATION MARK IN GOOD CONDITION, AND THERE ARE NO
 HV5823'REFERENCE MARKS.  SUBSURFACE MARK NOT RECOVERED.
 HV5823'
 HV5823'HOODS POINT IS COVERED WITH DENSE GROWTH OF BUSHES.
 HV5823
 HV5823                          STATION RECOVERY (1938)
 HV5823
 HV5823'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV5823'RECOVERED IN GOOD ORDER.  STATION IS ON EASTERN SHORE OF PROSPECT
 HV5823'BAY ON HOODS POINT ABOUT 2 MILES SSE OF KENT ISLAND NARROWS
 HV5823'BRIDGE IN MARSH GROUND 10 METERS E OF HIGH WATER, 29 METERS N OF
 HV5823'HIGH WATER, AND 9 METERS W OF HIGH WATER.
 HV5823'
 HV5823'STATION IS STANDARD MARYLAND SHELL FISH SURVEY MONUMENT PROJECTING
 HV5823'ABOUT 4 INCHES ABOVE MARSH SURFACE.
 HV5823'
 HV5823'TWO REFERENCE MARKS ESTABLISHED ON LINE WITH STATION AND KENT
 HV5823'ISLAND NARROWS BRIDGE STRUCTURE NNW OF STATION.  REFERENCE MARKS
 HV5823'NO.1 AND 2 ARE STANDARD REFERENCE MARK DISKS SET IN 12-INCH SQUARE
 HV5823'CONCRETE BLOCKS PROJECTING 4 INCHES ABOVE SURFACE.
 HV5823
 HV5823                          STATION RECOVERY (1961)
 HV5823
 HV5823'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5823'STATION MARK RECOVERED WITH THE TOP CRACKED AND BROKEN OFF ON ONE
 HV5823'CORNER.  THE REFERENCE MARKS HAVE BEEN DESTROYED BY EROSION.
 HV5823'STATION IS NOW 5 FT. E OF M.H.W.L. AND IS SURROUNDED BY STAKES.
 HV5823
 HV5823                          STATION RECOVERY (1973)
 HV5823
 HV5823'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV5823'STATION MARK WAS FOUND IN POOR CONDITION IN DANGER OF WASHING OUT.
 HV5823'MONUMENT WITH TOP CRUMBLED AWAY RECOVERED 2 FEET FROM EDGE OF
 HV5823'BANK.  LAND END HAS WASHED THROUGH AND IS NOW A SMALL ISLAND
 HV5823'WHICH IS WASHING FAST.  WITNESS POST AND SIGN PLACED AT W EDGE OF
 HV5823'MONUMENT WHICH IS NOW 57 FEET N OF S END OF ISLAND AND 18 FEET SW
 HV5823'OF N END OF ISLAND.
 HV5823
 HV5823                          STATION RECOVERY (1974)
 HV5823
 HV5823'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV5823'THE STATION SURFACE MARKER WAS FOUND DESTROYED.  THE UPPER
 HV5823'SURFACE OF THE POINT OF LAND HAD WASHED AWAY SOMETIME IN THE PAST.
 HV5823'THE OLD SUB-SURFACE TILE PIPE WAS FOUND INTACT IN ABOUT 1 FOOT OF
 HV5823'WATER. IT WAS SOLID AND APPEARED TO HAVE NEVER BEEN DISTURBED. THE
 HV5823'TOP OF THE TILE PIPE WAS FLUSH WITH THE FLOOR OF THE INLET AND
 HV5823'SOLID TO AN EXTENT THAT IT COULD NOT BE MOVED IN ANY DIRECTION
 HV5823'EXCEPT STRAIGHT DOWN INTO THE SAND.  IT WAS ASSUMED THAT THE POINT
 HV5823'WAS STILL IN THE SAME HORIZON AS POSITION AS ORIGINALLY ESTABLISHED.
 HV5823'
 HV5823'A NEW STATION BONNET 2 MSFC 1974 WAS ESTABLISHED BY TRAVERSING TO
 HV5823'IT FROM THE SUB-SURFACE MARKER WHICH WAS FOUND.  THERE WERE NEVER
 HV5823'ANY REFERENCE MARKS ESTABLISHED AT THIS STATION NOR IS THERE ANY
 HV5823'PLACE TO ESTABLISH THEM AT THE NEW STATION.
 HV5823'
 HV5823'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 2 MILES SOUTH OF
 HV5823'KENT NARROWS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5827 ***********************************************************************
 HV5827  DESIGNATION -  BONNET 2
 HV5827  PID         -  HV5827
 HV5827  STATE/COUNTY-  MD/QUEEN ANNES
 HV5827  COUNTRY     -  US
 HV5827  USGS QUAD   -  QUEENSTOWN (2016)
 HV5827
 HV5827                         *CURRENT SURVEY CONTROL
 HV5827  ______________________________________________________________________
 HV5827* NAD 83(1991) POSITION- 38 56 29.91133(N) 076 14 05.72921(W)   ADJUSTED
 HV5827* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5827  ______________________________________________________________________
 HV5827  GEOID HEIGHT    -        -33.853 (meters)                     GEOID18
 HV5827  LAPLACE CORR    -         -4.49  (seconds)                    DEFLEC18
 HV5827  HORZ ORDER      -  THIRD
 HV5827
 HV5827.The horizontal coordinates were established by classical geodetic methods
 HV5827.and adjusted by the National Geodetic Survey in January 1992.
 HV5827
 HV5827.The orthometric height was scaled from a topographic map.
 HV5827
 HV5827.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5827.GEOID18 height accuracy estimate available here.
 HV5827
 HV5827.Click photographs - Photos may exist for this station.
 HV5827
 HV5827.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5827
 HV5827. The following values were computed from the NAD 83(1991) position.
 HV5827
 HV5827;                    North         East     Units Scale Factor Converg.
 HV5827;SPC MD       -   141,805.855   466,326.063   MT  0.99995051   +0 28 48.7
 HV5827;SPC MD       -   465,241.38  1,529,938.09   sFT  0.99995051   +0 28 48.7
 HV5827;UTM  18      - 4,311,025.558   392,976.153   MT  0.99974104   -0 46 34.5
 HV5827
 HV5827!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5827!SPC MD       -   1.00000535  x   0.99995051  =   0.99995586
 HV5827!UTM  18      -   1.00000535  x   0.99974104  =   0.99974639
 HV5827
 HV5827:                Primary Azimuth Mark                     Grid Az
 HV5827:SPC MD       -  KIRWAN RESET                             314 27 46.7
 HV5827:UTM  18      -  KIRWAN RESET                             315 43 09.9
 HV5827
 HV5827_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9297611025(NAD 83)
 HV5827
 HV5827|---------------------------------------------------------------------|
 HV5827| PID    Reference Object                     Distance      Geod. Az  |
 HV5827|                                                           dddmmss.s |
 HV5827| HV6231 WADES POINT RADIO TOWER             APPROX.14.2 KM 2000036.5 |
 HV5827| HV6219 CRAB ALLEY NECK TANK                APPROX. 2.7 KM 2313714.8 |
 HV5827| HV5823 BONNET                                6.263 METERS 29708     |
 HV5827| HV6218 KIRWAN 2                            APPROX. 2.0 KM 3121055.1 |
 HV5827| HV6184 KIRWAN RESET                        APPROX. 2.0 KM 3145635.4 |
 HV5827| HV5826 KENT NARROWS ELEC TWR WEST          APPROX. 3.4 KM 3394653.8 |
 HV5827| HV5825 KENT NARROWS ELEC TWR EAST          APPROX. 3.3 KM 3423622.8 |
 HV5827|---------------------------------------------------------------------|
 HV5827
 HV5827                          SUPERSEDED SURVEY CONTROL
 HV5827
 HV5827  NAD 83(1986)-  38 56 29.90690(N)    076 14 05.74181(W) AD(       ) 3
 HV5827  NAD 27      -  38 56 29.49136(N)    076 14 06.91459(W) AD(       ) 3
 HV5827
 HV5827.Superseded values are not recommended for survey control.
 HV5827
 HV5827.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5827.See file dsdata.pdf to determine how the superseded data were derived.
 HV5827
 HV5827_MARKER: I = METAL ROD
 HV5827_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5827
 HV5827  HISTORY     - Date     Condition        Report By
 HV5827  HISTORY     - 1974     MONUMENTED       MDDNR
 HV5827
 HV5827                          STATION DESCRIPTION
 HV5827
 HV5827'DESCRIBED BY MD DEPT OF NAT RES 1974 (CLN)
 HV5827'THE STATION IS LOCATED ON A SMALL ISLAND AT THE MOST SOUTHWEST POINT
 HV5827'OF LAND ON HOOD POINT.  IT IS ABOUT 10 MILES EAST OF ANNAPOLIS
 HV5827'AND ABOUT 2 MILES SOUTH OF THE HIGHWAY BRIDGE OVER KENT NARROWS.
 HV5827'THE PROPERTY IS OWNED BY THE STATE OF MARYLAND.
 HV5827'
 HV5827'THIS STATION CAN BE REACHED BY BOAT ONLY.  FROM THE HIGHWAY
 HV5827'BRIDGE FOR U.S. HIGHWAYS 50 AND 301 OVER KENT NARROWS, SAIL
 HV5827'SOUTHERLY THROUGH KENT NARROWS FOR ABOUT 2 MILES TO THE SMALL
 HV5827'ISLAND JUST OFF HOOD POINT AND THE STATION IN THE CENTER OF THE 30
 HV5827'FOOT ROUND ISLAND.
 HV5827'
 HV5827'THE STATION MARK IS A MARYLAND DEPARTMENT OF NATURAL RESOURCES
 HV5827'MONUMENT WHICH BEARS THE NAME BONNET 2 MSFC.  THE POINT IS MARKED
 HV5827'BY A 3/4 INCH ROUND IRON PEG SET IN THE TOP OF A 10-INCH ROUND
 HV5827'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE.  THE PEG STICKS
 HV5827'UP ABOVE THE CONCRETE MONUMENT ABOUT 4 INCHES AND THERE IS A
 HV5827'SMALL CENTER PUNCH HOLE IN THE CENTER OF THE PEG.  IT IS 46 FEET
 HV5827'NORTHEAST OF THE MOST SOUTHWEST POINT OF THE ISLAND, 48 FEET
 HV5827'NORTHWEST OF THE MOST SOUTHEAST POINT OF THE ISLAND AND 30
 HV5827'FEET SOUTH OF THE MOST NORTH POINT.  A WITNESS POST WAS SET
 HV5827'NEAR WHERE OLD TRIANGULATION STATION BONNET MSFC 1909 WAS FOUND
 HV5827'AND THE WITNESS POST IS 22.5 FEET NORTHWEST OF THIS NEW
 HV5827'STATION.
 HV5827'
 HV5827'THIS ISLAND IS VERY SMALL AND THE ONLY SOLID GROUND IN THE AREA IS
 HV5827'IN THE CENTER OF THE ISLAND WHERE THE STATION MARK IS LOCATED.
 HV5827'THERE IS NO SUITABLE PLACE WITHIN REASONABLE DISTANCE TO ESTABLISH
 HV5827'REFERENCE MARKS.
 HV5827'
 HV5827'SEVERAL INTERSECTIONS STATIONS WERE OBSERVED FROM THIS STATION
 HV5827'AND MOST ANY OF THEM MAY BE USED AS AN AZIMUTH MARK FOR THIS
 HV5827'STATION.
 HV5827'
 HV5827'THE POSITION OF THIS STATION WAS DETERMINED BY TRAVERSEING FROM OLD
 HV5827'TRIANGULATION STATION BONNET MSFC 1909.
 HV5827'
 HV5827'H P 3800 MEASUREMENTS.
 HV5827'
 HV5827'NEAREST TOWN--KENT NARROWS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5648 ***********************************************************************
 JV5648  DESIGNATION -  BONNIE BLINK
 JV5648  PID         -  JV5648
 JV5648  STATE/COUNTY-  MD/BALTIMORE
 JV5648  COUNTRY     -  US
 JV5648  USGS QUAD   -  HEREFORD (2016)
 JV5648
 JV5648                         *CURRENT SURVEY CONTROL
 JV5648  ______________________________________________________________________
 JV5648* NAD 83(1991) POSITION- 39 29 59.54656(N) 076 39 38.10880(W)   ADJUSTED
 JV5648* NAVD 88 ORTHO HEIGHT -   170.    (meters)      558.    (feet) SCALED
 JV5648  ______________________________________________________________________
 JV5648  GEOID HEIGHT    -        -32.346 (meters)                     GEOID18
 JV5648  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 JV5648  HORZ ORDER      -  FIRST
 JV5648
 JV5648.The horizontal coordinates were established by classical geodetic methods
 JV5648.and adjusted by the National Geodetic Survey in January 1992.
 JV5648
 JV5648.The orthometric height was scaled from a topographic map.
 JV5648
 JV5648.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5648.GEOID18 height accuracy estimate available here.
 JV5648
 JV5648.Click photographs - Photos may exist for this station.
 JV5648
 JV5648.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5648
 JV5648. The following values were computed from the NAD 83(1991) position.
 JV5648
 JV5648;                    North         East     Units Scale Factor Converg.
 JV5648;SPC MD       -   203,555.199   429,194.429   MT  1.00000911   +0 12 46.9
 JV5648;SPC MD       -   667,830.68  1,408,115.39   sFT  1.00000911   +0 12 46.9
 JV5648;UTM  18      - 4,373,566.819   357,220.355   MT  0.99985100   -1 03 23.2
 JV5648
 JV5648!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5648!SPC MD       -   0.99997844  x   1.00000911  =   0.99998755
 JV5648!UTM  18      -   0.99997844  x   0.99985100  =   0.99982944
 JV5648
 JV5648:                Primary Azimuth Mark                     Grid Az
 JV5648:SPC MD       -  BONNIE BLINK AZ MK                       164 52 08.2
 JV5648:UTM  18      -  BONNIE BLINK AZ MK                       166 08 18.3
 JV5648
 JV5648_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5722073566(NAD 83)
 JV5648
 JV5648|---------------------------------------------------------------------|
 JV5648| PID    Reference Object                     Distance      Geod. Az  |
 JV5648|                                                           dddmmss.s |
 JV5648| CA9988 BONNIE BLINK RM 1                     7.576 METERS 03936     |
 JV5648| JV5651 TEXAS ST JOSEPHS CATH CH CROSS      APPROX. 4.5 KM 1552324.2 |
 JV5648| CA9987 BONNIE BLINK AZ MK                                 1650455.1 |
 JV5648| CA9989 BONNIE BLINK RM 2                     7.303 METERS 31819     |
 JV5648|---------------------------------------------------------------------|
 JV5648
 JV5648                          SUPERSEDED SURVEY CONTROL
 JV5648
 JV5648  NAD 83(1986)-  39 29 59.54512(N)    076 39 38.11414(W) AD(       ) 1
 JV5648  NAD 83(1986)-  39 29 59.54395(N)    076 39 38.11505(W) AD(       ) 1
 JV5648  NAD 27      -  39 29 59.16000(N)    076 39 39.21300(W) AD(       ) 1
 JV5648
 JV5648.Superseded values are not recommended for survey control.
 JV5648
 JV5648.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5648.See file dsdata.pdf to determine how the superseded data were derived.
 JV5648
 JV5648_MARKER: DS = TRIANGULATION STATION DISK
 JV5648_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV5648_SP_SET: BELL TOWER PARAPET
 JV5648_STAMPING: BONNIE BLINK 1938
 JV5648_MARK LOGO: CGS
 JV5648_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV5648
 JV5648  HISTORY     - Date     Condition        Report By
 JV5648  HISTORY     - 1938     MONUMENTED       CGS
 JV5648  HISTORY     - 1959     GOOD             CGS
 JV5648  HISTORY     - 1971     GOOD             NGS
 JV5648  HISTORY     - 1973     GOOD             NGS
 JV5648  HISTORY     - 19940930 GOOD             USPSQD
 JV5648
 JV5648                          STATION DESCRIPTION
 JV5648
 JV5648'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV5648'THE STATION IS ON TOP OF BELL TOWER OF BONNIE BLINK, MASONIC HOME.
 JV5648'
 JV5648'AZIMUTH MARK IS A BRONZE TABLET SET IN CONCRETE CURB BETWEEN
 JV5648'ENTRANCE ROAD S OF MAIN GATE.  A WOODEN STAND WAS BUILT DIRECTLY
 JV5648'OVER THE MARK ON THE PARAPET.
 JV5648'
 JV5648'TEXAS AND DENISON ARE VISIBLE FROM THE STATION.
 JV5648'
 JV5648'TO REACH FROM BALTIMORE, GO N ON YORK ROAD THROUGH TOWSON, AND
 JV5648'NW TO COCKEYSVILLE, 0.85 MILE NNW FROM THE UNDERPASS TO TUFTON
 JV5648'AVENUE, 0.45 MILE W TO THE GATES OF THE MASONIC HOME.  THE STATION
 JV5648'MARK IS A BRONZE TABLET SET IN S PARAPET OF BELL TOWER.
 JV5648'
 JV5648'REFERENCE MARK NO.1 IS A BRONZE TABLET SET IN E PARAPET.  REFERENCE
 JV5648'MARK NO.2 IS A BRONZE TABLET SET IN W PARAPET.
 JV5648
 JV5648                          STATION RECOVERY (1959)
 JV5648
 JV5648'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV5648'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO BE
 JV5648'IN GOOD CONDITION.  STATION WAS OCCUPIED ECCENTRICALLY BECAUSE
 JV5648'OF THE DIFFICULTIES INVOLVED IN BUILDING A SUITABLE SIGNAL OVER
 JV5648'STATION.  THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV5648
 JV5648                          STATION RECOVERY (1971)
 JV5648
 JV5648'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV5648'THIS TRIANGULATION STATION WAS RECOVERED IN GOOD CONDITION, BUT
 JV5648'DUE TO THE URGENCY OF THIS REQUEST, ENGINEERS FROM THE STATE OF
 JV5648'MARYLAND ROADS COMMISSION PROCEEDED TO MOVE THE AZIMUTH MARK
 JV5648'ON-LINE FROM THE STATION A DISTANCE OF 99.813 FEET (TEMPERATURE
 JV5648'CORRECTED) TO THE SOUTH SIDE OF SHAWAN ROAD.
 JV5648'
 JV5648'STATION IS LOCATED 7 MILES NORTH OF TOWSON AND 1.5 MILES
 JV5648'NORTH-NORTHWEST OF COCKEYSVILLE, ATOP THE BELL TOWER OF BONNIE
 JV5648'BLINK MASONIC HOME.  THE STATION MARK IS A BRONZE TABLET SET IN
 JV5648'THE SOUTH PARAPET OF THE BELL TOWER.
 JV5648'
 JV5648'REFERENCE MARK NO. 1 IS A BRONZE TABLET SET IN THE EAST PARAPET.
 JV5648'
 JV5648'REFERENCE MARK NO. 2 IS A BRONZE TABLET SET IN THE WEST PARAPET.
 JV5648'
 JV5648'THE AZIMUTH MARK IS LOCATED OPPOSITE THE MAIN ENTRANCE TO THE
 JV5648'MASONIC HOME, IN THE SOUTHEAST QUADRANT OF THE SHAWAN ROAD
 JV5648'INTERSECTION WITH MC CORMICK ROAD, 168.0 FEET SOUTH OF THE
 JV5648'CENTERLINE OF SHAWAN ROAD, 36.2 FEET EAST OF THE CENTERLINE OF
 JV5648'MC CORMICK ROAD, 14.8 FEET NORTH OF A 10-INCH OAK TREE, 12.8 FEET
 JV5648'SOUTHEAST OF A LIGHT POLE, AND 12.3 FEET EAST OF THE FACE OF THE
 JV5648'CONCRETE CURB.  A STANDARD USC AND GS AZIMUTH DISK SET IN A
 JV5648'CONCRETE POST 2 INCHES BELOW THE SURFACE AND STAMPED BONNIE
 JV5648'BLINK AZI. 2, 1971.
 JV5648'
 JV5648'TO REACH FROM THE INTERCHANGE OF INTERSTATE ROUTES 695 AND 83,
 JV5648'PROCEED NORTH ALONG I-83 (BALTIMORE/HARRISBURG EXPRESSWAY) FOR 6
 JV5648'MILES TO THE SHAWAN ROAD INTERCHANGE, THENCE RIGHT (EAST) ON
 JV5648'SHAWAN ROAD FOR 0.4 MILE TO THE MAIN GATE ENTRANCE OF BONNIE
 JV5648'BLINK MASONIC HOME ON THE LEFT.
 JV5648'
 JV5648'NOTE--STATIONS TEXAS AND DENISON ARE VISIBLE FROM THE STATION.
 JV5648
 JV5648                          STATION RECOVERY (1973)
 JV5648
 JV5648'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV5648'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV5648'CONDITION.  THE AZIMUTH MARK WAS RESET IN 1971 BY MARYLAND
 JV5648'DEPARTMENT OF TRANSPORTATION AND THE ANGLE TO IT WAS VARIFIED
 JV5648'AT THIS DATE.  THE ANGLES TO THE REFERENCE MARKS COULD NOT BE
 JV5648'OBSERVED AT THIS DATE.  THERE IS A 200 FOOT WALL ON THE SOUTH
 JV5648'SIDE OF THE STATION AND IT WAS IMPOSSIBLE TO WALK ON THE SOUTH
 JV5648'SIDE OF THE STATION TO OBSERVE THE DIRECTION TO THE REFERENCE
 JV5648'MARKS.  THE DISTANCE TO THE REFERENCE MARKS WERE WITHIN CLOSE
 JV5648'AGREEMENT WITH THE 1971 DISTANCES.
 JV5648'
 JV5648'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV5648'
 JV5648'THE STATION IS LOCATED ATOP THE BELL TOWER WALL OF THE MASONIC
 JV5648'HOME.  IT IS ABOUT 12 MILES NORTH OF THE CENTER OF BALTIMORE, 7
 JV5648'MILES NORTH OF TOWSON AND 1-1/2 MILES NORTHWEST OF
 JV5648'COCKEYSVILLE.  THE PROPERTY IS OWNED BY THE BONNIE BLINK
 JV5648'MASONIC HOME.
 JV5648'
 JV5648'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAYS
 JV5648'695 AND 83 IN THE NORTH PART OF BALTIMORE, GO NORTHERLY ON
 JV5648'INTERSTATE HIGHWAY 83 FOR 5.9 MILES TO SHAWAN ROAD.  LEAVE THE
 JV5648'INTERSTATE HIGHWAY AND GO EAST ON SHAWAN ROAD FOR 0.3 MILE TO A
 JV5648'CROSSROADS AT THE ENTRANCE TO THE MASONIC HOME ON THE LEFT AND
 JV5648'THE AZIMUTH MARK ON THE RIGHT.  TURN LEFT AND GO NORTH AND
 JV5648'NORTHWEST ON A PAVED ROAD FOR 0.4 MILE TO THE TOP OF A LOW HILL
 JV5648'AT THE MASONIC HOME AND THE STATION ATOP THE BELL TOWER.
 JV5648'
 JV5648'THE STATION MARK IS A STANDARD DISK STAMPED BONNIE BLINK 1938,
 JV5648'CEMENTED IN A DRILL HOLE IN THE SOUTH HEADWALL OF THE BELL
 JV5648'TOWER.  THE DISK IS ABOUT 3-1/2 FEET ABOVE THE BELL TOWER
 JV5648'FLOOR.  IT IS 19.5 FEET SOUTHWEST OF THE DOOR OF THE ENTRANCE TO
 JV5648'THE BELL TOWER, 8.7 FEET EAST OF THE SOUTHWEST CORNER OF THE
 JV5648'HEADWALL AND 0.5 FOOT NORTH OF THE SOUTH EDGE OF THE
 JV5648'HEADWALL.
 JV5648'
 JV5648'REFERENCE MARK ONE IS A STANDARD DISK STAMPED BONNIE BLINK NO 1
 JV5648'1938, CEMENTED IN A DRILL HOLE IN THE EAST HEADWALL OF THE BELL
 JV5648'TOWER.  IT IS 8.8 FEET NORTH-NORTHEAST OF THE DOOR AND 0.5 FOOT
 JV5648'EAST OF THE INSIDE EDGE OF THE WALL.
 JV5648'
 JV5648'REFERENCE MARK TWO IS A STANDARD DISK STAMPED BONNIE BLINK NO 2
 JV5648'1938, CEMENTED IN A DRILL HOLE IN THE WEST HEADWALL OF THE BELL
 JV5648'TOWER.  IT IS 8.5 FEET SOUTH OF THE NORTHWEST CORNER OF THE BELL
 JV5648'TOWER AND 0.5 FEET EAST OF THE OUTSIDE EDGE OF THE WALL.
 JV5648'
 JV5648'THE AZIMUTH MARK IS A STANDARD DISK STAMPED BONNIE BLINK AZI, 2
 JV5648'1971, SET IN THE TOP OF A 8-INCH ROUND CONCRETE POST WHICH IS
 JV5648'1-INCH BELOW THE SURFACE OF THE GROUND.
 JV5648'
 JV5648'THE AZIMUTH MARK IS 168 FEET SOUTH OF THE CENTER OF SHAWAN ROAD,
 JV5648'36.5 FEET EAST OF THE CENTER OF INDUSTRIAL PARK ROAD, 15 FEET
 JV5648'NORTH-NORTHWEST OF A 18-INCH OAK TREE, 12.7 FEET SOUTHEAST OF A
 JV5648'CONCRETE LIGHT POLE, 12.3 FEET EAST OF THE EAST CURB OF INDUSTRIAL
 JV5648'PARK ROAD 11.0 FEET EAST-NORTHEAST OF A WATER METER MANHOLE AND
 JV5648'75 YARDS NORTHWEST OF A LARGE BUILDING.
 JV5648'
 JV5648'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5648'1-1/2 MILES NORTHWEST OF COCKEYSVILLE.
 JV5648
 JV5648                          STATION RECOVERY (1994)
 JV5648
 JV5648'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5648'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4993 ***********************************************************************
 JV4993  DESIGNATION -  BOOKER
 JV4993  PID         -  JV4993
 JV4993  STATE/COUNTY-  MD/QUEEN ANNES
 JV4993  COUNTRY     -  US
 JV4993  USGS QUAD   -  CHESTERTOWN (2017)
 JV4993
 JV4993                         *CURRENT SURVEY CONTROL
 JV4993  ______________________________________________________________________
 JV4993* NAD 83(1991) POSITION- 39 07 54.07938(N) 076 04 19.93188(W)   ADJUSTED
 JV4993* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV4993  ______________________________________________________________________
 JV4993  GEOID HEIGHT    -        -33.558 (meters)                     GEOID18
 JV4993  LAPLACE CORR    -         -2.53  (seconds)                    DEFLEC18
 JV4993  HORZ ORDER      -  THIRD
 JV4993
 JV4993.The horizontal coordinates were established by classical geodetic methods
 JV4993.and adjusted by the National Geodetic Survey in January 1992.
 JV4993
 JV4993.The orthometric height was scaled from a topographic map.
 JV4993
 JV4993.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4993.GEOID18 height accuracy estimate available here.
 JV4993
 JV4993.Click photographs - Photos may exist for this station.
 JV4993
 JV4993.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4993
 JV4993. The following values were computed from the NAD 83(1991) position.
 JV4993
 JV4993;                    North         East     Units Scale Factor Converg.
 JV4993;SPC MD       -   163,032.855   480,217.890   MT  0.99995979   +0 34 56.3
 JV4993;SPC MD       -   534,883.63  1,575,514.86   sFT  0.99995979   +0 34 56.3
 JV4993;UTM  18      - 4,331,937.663   407,327.271   MT  0.99970575   -0 40 36.2
 JV4993
 JV4993!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4993!SPC MD       -   1.00000499  x   0.99995979  =   0.99996478
 JV4993!UTM  18      -   1.00000499  x   0.99970575  =   0.99971074
 JV4993
 JV4993:                Primary Azimuth Mark                     Grid Az
 JV4993:SPC MD       -  STARKLEY                                 247 20 35.3
 JV4993:UTM  18      -  STARKLEY                                 248 36 07.8
 JV4993
 JV4993_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0732731937(NAD 83)
 JV4993
 JV4993|---------------------------------------------------------------------|
 JV4993| PID    Reference Object                     Distance      Geod. Az  |
 JV4993|                                                           dddmmss.s |
 JV4993| JV4984 STARKLEY                            APPROX. 1.0 KM 2475531.6 |
 JV4993|---------------------------------------------------------------------|
 JV4993
 JV4993                          SUPERSEDED SURVEY CONTROL
 JV4993
 JV4993  NAD 83(1986)-  39 07 54.07324(N)    076 04 19.94436(W) AD(       ) 3
 JV4993  NAD 27      -  39 07 53.68500(N)    076 04 21.13800(W) AD(       ) 3
 JV4993  USSD        -  39 07 54.09600(N)    076 04 20.91200(W) AD(       ) 3
 JV4993
 JV4993.Superseded values are not recommended for survey control.
 JV4993
 JV4993.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4993.See file dsdata.pdf to determine how the superseded data were derived.
 JV4993
 JV4993_MARKER: H = DRILL HOLE
 JV4993_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4993_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4993+STABILITY: SURFACE MOTION
 JV4993
 JV4993  HISTORY     - Date     Condition        Report By
 JV4993  HISTORY     - 1909     MONUMENTED       MDSFC
 JV4993  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV4993
 JV4993                          STATION DESCRIPTION
 JV4993
 JV4993'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV4993'STATION IS ON THE SOUTHEASTERN SHORE OF UPPER CHESTER RIVER, ABOUT
 JV4993'175 YARDS NE OF BOOKERS WHARF, AND 1/2 MILE S OF MELTON POINT,
 JV4993'ON SANDY MARSHLAND, ABOUT 1 FOOT ABOVE HIGH WATER, 6 YARDS SE OF
 JV4993'SHORE, 13 YARDS E BY S OF A SMALL POINT, 30 YARDS SW BY S OF
 JV4993'LOCUST TREES, 125 YARDS NW BY N OF HOUSE ON 20-FOOT BANK, AND 140
 JV4993'YARDS NW OF CREEK.
 JV4993'
 JV4993'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV4993'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV4993'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES.  THE LETTERS
 JV4993'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV4993'MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE
 JV4993'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV4993'
 JV4993'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV4993'FOLLOWS--NEAR PEAK OF HOUSE ON BANK, 125 YARDS, S 1 DEG 43 MIN W.
 JV4993'RIGHT PEAK OF BOOKERS WHARF HOUSE, 175 YARDS, S 58 DEG 42 MIN W.  LEFT
 JV4993'CHIMNEY OF QUAKER NECK WHARF HOUSE, 1-1/2 MILES, S 85 DEG 41 MIN W.
 JV4993'NEAR PEAK OF HOUSE IN WOODS, 3/4 MILE, N 58 DEG 32 MIN W.
 JV4993'PEAK OF MIDDLE DORMER WINDOW ON LEFT SIDE OF HOUSE AMONG TREES,
 JV4993'7/8 MILE, N 44 DEG 00 MIN W. CHIMNEY OF HOUSE, 1 MILE, N 01 DEG
 JV4993'33 MIN E.  NAIL IN BLAZE IN 4-INCH LOCUST TREE, 29.46 METERS
 JV4993'(96.6 FEET), N 69 DEG 41 MIN E.
 JV4993
 JV4993                          STATION RECOVERY (1941)
 JV4993
 JV4993'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV4993'SEARCHED FOR BUT NOT FOUND.  SHORE HAS WASHED HERE AND MARK MAY
 JV4993'BE WASHED OUT.  RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6034 ***********************************************************************
 HV6034  DESIGNATION -  BOONE
 HV6034  PID         -  HV6034
 HV6034  STATE/COUNTY-  MD/TALBOT
 HV6034  COUNTRY     -  US
 HV6034  USGS QUAD   -  OXFORD (2016)
 HV6034
 HV6034                         *CURRENT SURVEY CONTROL
 HV6034  ______________________________________________________________________
 HV6034* NAD 83(1991) POSITION- 38 40 12.95219(N) 076 10 20.50429(W)   ADJUSTED
 HV6034* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6034  ______________________________________________________________________
 HV6034  GEOID HEIGHT    -        -34.670 (meters)                     GEOID18
 HV6034  LAPLACE CORR    -         -4.05  (seconds)                    DEFLEC18
 HV6034  HORZ ORDER      -  THIRD
 HV6034
 HV6034.The horizontal coordinates were established by classical geodetic methods
 HV6034.and adjusted by the National Geodetic Survey in January 1992.
 HV6034
 HV6034.The orthometric height was scaled from a topographic map.
 HV6034
 HV6034.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6034.GEOID18 height accuracy estimate available here.
 HV6034
 HV6034.Click photographs - Photos may exist for this station.
 HV6034
 HV6034.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6034
 HV6034. The following values were computed from the NAD 83(1991) position.
 HV6034
 HV6034;                    North         East     Units Scale Factor Converg.
 HV6034;SPC MD       -   111,729.763   472,022.712   MT  0.99995625   +0 31 10.0
 HV6034;SPC MD       -   366,566.73  1,548,627.85   sFT  0.99995625   +0 31 10.0
 HV6034;UTM  18      - 4,280,838.533   398,012.026   MT  0.99972809   -0 43 57.4
 HV6034
 HV6034!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6034!SPC MD       -   1.00000532  x   0.99995625  =   0.99996157
 HV6034!UTM  18      -   1.00000532  x   0.99972809  =   0.99973341
 HV6034
 HV6034:                Primary Azimuth Mark                     Grid Az
 HV6034:SPC MD       -  ENTER                                    129 37 38.3
 HV6034:UTM  18      -  ENTER                                    130 52 45.7
 HV6034
 HV6034_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9801280838(NAD 83)
 HV6034
 HV6034|---------------------------------------------------------------------|
 HV6034| PID    Reference Object                     Distance      Geod. Az  |
 HV6034|                                                           dddmmss.s |
 HV6034| HV6041 ENTER                               APPROX. 1.4 KM 1300848.3 |
 HV6034|---------------------------------------------------------------------|
 HV6034
 HV6034                          SUPERSEDED SURVEY CONTROL
 HV6034
 HV6034  NAD 83(1986)-  38 40 12.94887(N)    076 10 20.52008(W) AD(       ) 3
 HV6034  NAD 27      -  38 40 12.51600(N)    076 10 21.73600(W) AD(       ) 3
 HV6034  USSD        -  38 40 12.90800(N)    076 10 21.54200(W) AD(       ) 3
 HV6034
 HV6034.Superseded values are not recommended for survey control.
 HV6034
 HV6034.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6034.See file dsdata.pdf to determine how the superseded data were derived.
 HV6034
 HV6034_MARKER: H = DRILL HOLE
 HV6034_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6034_PROJECTION: PROJECTING 10 CENTIMETERS
 HV6034_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6034
 HV6034  HISTORY     - Date     Condition        Report By
 HV6034  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6034  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6034
 HV6034                          STATION DESCRIPTION
 HV6034
 HV6034'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6034'ON THE NORTHEASTERN SHORE OF CHOPTANK RIVER, ABOUT 3/8 MILE NW OF
 HV6034'ENTRANCE TO BOONE CREEK, 1/2 MILE SE OF BACHELOR POINT, AND 1-1/8
 HV6034'MILES NE OF CHOPTANK RIVER LIGHT, ABOUT 5 FEET ABOVE HIGH WATER,
 HV6034'13 YARDS NE OF EDGE OF TREE-FRINGED BANK, 60 YARDS SSW OF RIGHT
 HV6034'CORNER OF HOUSE, AND 50 YARDS SSE OF LARGE APPLE TREE.  STATION IS
 HV6034'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV6034'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6034'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV6034'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS
 HV6034'THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2
 HV6034'INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6034'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 HV6034'5-INCH LOCUST TREE, 10.26 METERS (33.7 FEET), S 54 DEG 54 MIN W.
 HV6034'NAIL IN BLAZE IN 10-INCH LOCUST TREE, 20.59 METERS (67.6 FEET), N
 HV6034'80 DEG 35 MIN W.  NEAR PEAK OF HOUSE, 1/4 MILE, N 38 DEG 7 MIN W.
 HV6034'RIGHT CORNER OF HOUSE, 57 YARDS, N 13 DEG 6 MIN E.  NEAR PEAK OF
 HV6034'HOUSE, 3/4 MILE, N 49 DEG 22 MIN E.  NAIL IN BLAZE IN 4-INCH
 HV6034'LOCUST TREE, 13.02 METERS (42.7 FEET), S 2 DEG 52 MIN E.
 HV6034
 HV6034                          STATION RECOVERY (1940)
 HV6034
 HV6034'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6034'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  LOCATED IN
 HV6034'CULTIVATED CORN FIELD, FARMER STATES THAT FIELD HAS BEEN PLOWED TO
 HV6034'A 12-INCH DEPTH WITHOUT STRIKING MONUMENT OR SUBSURFACE MARKER,
 HV6034'BOTH MARKS HAVE PROBABLY BEEN PLOWED UP AT SOME EARLIER DATE.
 HV6034'
 HV6034'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4699 ***********************************************************************
 JV4699  DESIGNATION -  BOONS
 JV4699  PID         -  JV4699
 JV4699  STATE/COUNTY-  MD/WASHINGTON
 JV4699  COUNTRY     -  US
 JV4699  USGS QUAD   -  FUNKSTOWN (2017)
 JV4699
 JV4699                         *CURRENT SURVEY CONTROL
 JV4699  ______________________________________________________________________
 JV4699* NAD 83(1991) POSITION- 39 30 02.57483(N) 077 40 03.35482(W)   ADJUSTED
 JV4699* NAVD 88 ORTHO HEIGHT -   244.    (meters)      801.    (feet) SCALED
 JV4699  ______________________________________________________________________
 JV4699  GEOID HEIGHT    -        -33.667 (meters)                     GEOID18
 JV4699  LAPLACE CORR    -          8.37  (seconds)                    DEFLEC18
 JV4699  HORZ ORDER      -  SECOND
 JV4699
 JV4699.The horizontal coordinates were established by classical geodetic methods
 JV4699.and adjusted by the National Geodetic Survey in January 1992.
 JV4699
 JV4699.The orthometric height was scaled from a topographic map.
 JV4699
 JV4699.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4699.GEOID18 height accuracy estimate available here.
 JV4699
 JV4699.Click photographs - Photos may exist for this station.
 JV4699
 JV4699.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4699
 JV4699. The following values were computed from the NAD 83(1991) position.
 JV4699
 JV4699;                    North         East     Units Scale Factor Converg.
 JV4699;SPC MD       -   203,804.285   342,578.134   MT  1.00000927   -0 25 08.4
 JV4699;SPC MD       -   668,647.89  1,123,941.76   sFT  1.00000927   -0 25 08.4
 JV4699;SPC VA N     - 2,203,916.072 3,571,600.792   MT  1.00006722   +0 31 10.3
 JV4699;SPC VA N     - 7,230,681.31 11,717,826.93   sFT  1.00006722   +0 31 10.3
 JV4699;SPC WV N     -   112,703.507   757,589.605   MT  0.99994312   +1 10 07.2
 JV4699;SPC WV N     -   369,761.42  2,485,525.23   sFT  0.99994312   +1 10 07.2
 JV4699;UTM  18      - 4,375,741.678   270,628.873   MT  1.00024780   -1 41 51.2
 JV4699
 JV4699!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4699!SPC MD       -   0.99996703  x   1.00000927  =   0.99997630
 JV4699!SPC VA N     -   0.99996703  x   1.00006722  =   1.00003425
 JV4699!SPC WV N     -   0.99996703  x   0.99994312  =   0.99991016
 JV4699!UTM  18      -   0.99996703  x   1.00024780  =   1.00021483
 JV4699
 JV4699:                Primary Azimuth Mark                     Grid Az
 JV4699:SPC MD       -  BOONS AZ MK                              253 34 00.6
 JV4699:SPC VA N     -  BOONS AZ MK                              252 37 41.9
 JV4699:SPC WV N     -  BOONS AZ MK                              251 58 45.0
 JV4699:UTM  18      -  BOONS AZ MK                              254 50 43.4
 JV4699
 JV4699_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7062875741(NAD 83)
 JV4699
 JV4699|---------------------------------------------------------------------|
 JV4699| PID    Reference Object                     Distance      Geod. Az  |
 JV4699|                                                           dddmmss.s |
 JV4699| JV4689 WASHINGTON MON STATE PARK MON       APPROX. 3.8 KM 0902551.3 |
 JV4699| CK6716 BOONS RM 1                            6.944 METERS 13146     |
 JV4699| CK6715 BOONS AZ MK                                        2530852.2 |
 JV4699| JV4693 FORT RITCHIE SITE B TANK            APPROX. 5.8 KM 2811155.0 |
 JV4699| CK6717 BOONS RM 2                            7.153 METERS 31123     |
 JV4699|---------------------------------------------------------------------|
 JV4699
 JV4699                          SUPERSEDED SURVEY CONTROL
 JV4699
 JV4699  NAD 83(1986)-  39 30 02.57493(N)    077 40 03.36414(W) AD(       ) 2
 JV4699  NAD 27      -  39 30 02.21600(N)    077 40 04.39600(W) AD(       ) 2
 JV4699
 JV4699.Superseded values are not recommended for survey control.
 JV4699
 JV4699.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4699.See file dsdata.pdf to determine how the superseded data were derived.
 JV4699
 JV4699_MARKER: DS = TRIANGULATION STATION DISK
 JV4699_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4699_STAMPING: BOONS 1955
 JV4699_MARK LOGO: CGS
 JV4699_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4699+STABILITY: SURFACE MOTION
 JV4699
 JV4699  HISTORY     - Date     Condition        Report By
 JV4699  HISTORY     - 1955     MONUMENTED       CGS
 JV4699  HISTORY     - 1962     GOOD             MDDT
 JV4699
 JV4699                          STATION DESCRIPTION
 JV4699
 JV4699'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4699'THE STATION IS 10-1/2 MILES SOUTHEAST OF HAGERSTOWN, 1 MILE
 JV4699'SOUTHWEST OF BOONSBORO, 180 FEET SOUTHEAST OF STATE HIGHWAY 34,
 JV4699'5 FEET WEST OF A 4 IN X 4 IN WHITE WITNESS POST AND 4 FEET
 JV4699'SOUTHWEST OF A FENCE.
 JV4699'
 JV4699'TO REACH THE STATION FROM THE JUNCTION OF ALT. U.S. HIGHWAY 40
 JV4699'AND STATE HIGHWAY 34 IN BOONSBORO, GO SOUTHWEST ON HIGHWAY 34
 JV4699'FOR 0.9 MILE TO THE JUNCTION OF MONROE RD. ON THE RIGHT AND THE
 JV4699'STATION ON THE LEFT, CONTINUE ON THE HIGHWAY FOR 0.35 MILE TO
 JV4699'THE AZIMUTH MARK ON THE LEFT AS DESCRIBED.
 JV4699'
 JV4699'THE STATION MARK PROJECTS 3 INCHES, AND THE DISK IS STAMPED
 JV4699'BOONS 1955.
 JV4699'
 JV4699'REFERENCE MARK 1 IS 2 FEET SOUTHWEST OF THE FENCE.  THE MARK
 JV4699'PROJECTS 3 INCHES, AND THE DISK IS STAMPED BOONS NO 1 1955.
 JV4699'
 JV4699'REFERENCE MARK 2 IS 6 FEET SOUTHWEST OF THE FENCE.  THE MARK
 JV4699'PROJECTS 1 INCH, AND THE DISK IS STAMPED BOONS NO 2 1955.
 JV4699'
 JV4699'THE AZIMUTH MARK IS 65 FEET SOUTH OF THE CENTER OF THE HIGHWAY,
 JV4699'20 FEET WEST OF THE CENTER OF A FARM ROAD, 2 FEET EAST OF THE
 JV4699'CENTER WALL OF AN ADJOINING CORN CRIB AND MACHINE SHED.  THE
 JV4699'MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED BOONS 1955.
 JV4699'
 JV4699'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV4699
 JV4699                          STATION RECOVERY (1962)
 JV4699
 JV4699'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1962
 JV4699'ALL MARKS FOUND IN GOOD CONDITION.
 JV4699'
 JV4699'A CONCRETE BLOCK HOUSE HAS BEEN BUILT ON LINE BETWEEN STATION
 JV4699'AND AZIMUTH MARK AND THEY ARE NOT INTERVISIBLE WITH A 4-FOOT STAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7646 ***********************************************************************
 DG7646  DESIGNATION -  BOONS 2
 DG7646  PID         -  DG7646
 DG7646  STATE/COUNTY-  MD/CAROLINE
 DG7646  COUNTRY     -  US
 DG7646  USGS QUAD   -  DENTON (2017)
 DG7646
 DG7646                         *CURRENT SURVEY CONTROL
 DG7646  ______________________________________________________________________
 DG7646* NAD 83(2011) POSITION- 38 57 00.12696(N) 075 51 37.36616(W)   ADJUSTED
 DG7646* NAD 83(2011) ELLIP HT-   -17.298 (meters)        (12/21/23)   ADJUSTED
 DG7646* NAD 83(2011) EPOCH   -  2010.00
 DG7646* NAVD 88 ORTHO HEIGHT -    17.317 (meters)       56.81  (feet) ADJUSTED
 DG7646  ______________________________________________________________________
 DG7646  GEOID HEIGHT    -        -34.600 (meters)                     GEOID18
 DG7646  NAD 83(2011) X  -  1,213,318.528 (meters)                     COMP
 DG7646  NAD 83(2011) Y  - -4,816,325.117 (meters)                     COMP
 DG7646  NAD 83(2011) Z  -  3,987,993.926 (meters)                     COMP
 DG7646  LAPLACE CORR    -         -3.51  (seconds)                    DEFLEC18
 DG7646  DYNAMIC HEIGHT  -         17.307 (meters)       56.78  (feet) COMP
 DG7646  MODELED GRAVITY -    980,053.3   (mgal)                       NAVD 88
 DG7646
 DG7646  VERT ORDER      -  SECOND    CLASS I
 DG7646
 DG7646  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DG7646  Standards:
 DG7646         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DG7646            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DG7646  -------------------------------------------------------------------
 DG7646  NETWORK    0.80   1.80           0.36   0.28   0.92     -0.04341615
 DG7646  -------------------------------------------------------------------
 DG7646  Click here for local accuracies and other accuracy information.
 DG7646
 DG7646.The horizontal coordinates were established by GPS observations
 DG7646.and adjusted by the MD DOT HIGHWAY ADMIN in December 2023.
 DG7646
 DG7646.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DG7646.been affixed to the stable North American tectonic plate. See 
 DG7646.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DG7646
 DG7646.The horizontal coordinates are valid at the epoch date displayed above
 DG7646.which is a decimal equivalence of Year/Month/Day.
 DG7646
 DG7646.The orthometric height was determined by differential leveling and
 DG7646.adjusted by the NATIONAL GEODETIC SURVEY
 DG7646.in December 2004.
 DG7646
 DG7646.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7646.GEOID18 height accuracy estimate available here.
 DG7646
 DG7646.Click photographs - Photos may exist for this station.
 DG7646
 DG7646.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DG7646
 DG7646.The Laplace correction was computed from DEFLEC18 derived deflections.
 DG7646
 DG7646.The ellipsoidal height was determined by GPS observations
 DG7646.and is referenced to NAD 83.
 DG7646
 DG7646.The dynamic height is computed by dividing the NAVD 88
 DG7646.geopotential number by the normal gravity value computed on the
 DG7646.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7646.degrees latitude (g = 980.6199 gals.).
 DG7646
 DG7646.The modeled gravity was interpolated from observed gravity values.
 DG7646
 DG7646. The following values were computed from the NAD 83(2011) position.
 DG7646
 DG7646;                    North         East     Units Scale Factor Converg.
 DG7646;SPC MD       -   143,076.242   498,783.183   MT  0.99995068   +0 42 55.0
 DG7646;SPC MD       -   469,409.30  1,636,424.49   sFT  0.99995068   +0 42 55.0
 DG7646;UTM  18      - 4,311,583.879   425,445.268   MT  0.99966844   -0 32 27.2
 DG7646
 DG7646!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DG7646!SPC MD       -   1.00000271  x   0.99995068  =   0.99995339
 DG7646!UTM  18      -   1.00000271  x   0.99966844  =   0.99967115
 DG7646
 DG7646_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2544511583(NAD 83)
 DG7646
 DG7646                          SUPERSEDED SURVEY CONTROL
 DG7646
 DG7646.No superseded survey control is available for this station.
 DG7646
 DG7646_MARKER: DD = SURVEY DISK
 DG7646_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7646_STAMPING: BOONS 2 2002
 DG7646_MARK LOGO: MDSHA
 DG7646_PROJECTION: FLUSH
 DG7646_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7646_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7646+STABILITY: SURFACE MOTION
 DG7646_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7646+SATELLITE: SATELLITE OBSERVATIONS - August 02, 2023
 DG7646
 DG7646  HISTORY     - Date     Condition        Report By
 DG7646  HISTORY     - 2002     MONUMENTED       MDSHA
 DG7646  HISTORY     - 20060316 GOOD             USPSQD
 DG7646  HISTORY     - 20230802 GOOD             MDSHA
 DG7646
 DG7646                          STATION DESCRIPTION
 DG7646
 DG7646'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7646'THE STATION IS LOCATED ABOUT 1.2 MI (1.93 KM) NORTHEAST OF RIDGELY. TO
 DG7646'REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 480 AND STATE
 DG7646'HIGHWAY 312 IN RIDGELY, GO NORTHEAST ALONG STATE HIGHWAY 480 FOR 1.25
 DG7646'MI (2.01 KM) TO RIVER ROAD AND THE STATION ON THE LEFT. THE STATION IS
 DG7646'A MARYLAND STATE SURVEY DISK SET IN THE TOP OF A 12 INCH (30 CM) ROUND
 DG7646'CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS 24.3 FT (7.4
 DG7646'M) NORTH OF THE CENTER LINE OF THE HIGHWAY, 74.6 FT (22.7 M) WEST OF
 DG7646'THE CENTER LINE OF RIVER ROAD, 43.3 FT (13.2 M) WEST-NORTHWEST OF THE
 DG7646'SOUTHWEST CORNER OF A CONCRETE PAD FOR ELECTRIC BOX NUMNBER 311-149-17
 DG7646'AND 9.0 FT (2.7 M) WEST OF TELEPHONE POLE NUMBER 46.
 DG7646
 DG7646                          STATION RECOVERY (2006)
 DG7646
 DG7646'RECOVERY NOTE BY US POWER SQUADRON 2006 (NLH)
 DG7646'COORDINATES ARE EXACT. TELEPHONE POLE NUMBER 46 IS 8.5 FEET AWAY.
 DG7646
 DG7646                          STATION RECOVERY (2023)
 DG7646
 DG7646'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG7646'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7620 ***********************************************************************
 DG7620  DESIGNATION -  BORO
 DG7620  PID         -  DG7620
 DG7620  STATE/COUNTY-  MD/CAROLINE
 DG7620  COUNTRY     -  US
 DG7620  USGS QUAD   -  GOLDSBORO (2017)
 DG7620
 DG7620                         *CURRENT SURVEY CONTROL
 DG7620  ______________________________________________________________________
 DG7620* NAD 83(1986) POSITION- 39 00 46.3    (N) 075 47 14.7    (W)   HD_HELD2
 DG7620* NAVD 88 ORTHO HEIGHT -    15.283 (meters)       50.14  (feet) ADJUSTED
 DG7620  ______________________________________________________________________
 DG7620  GEOID HEIGHT    -        -34.507 (meters)                     GEOID18
 DG7620  DYNAMIC HEIGHT  -         15.274 (meters)       50.11  (feet) COMP
 DG7620  MODELED GRAVITY -    980,062.0   (mgal)                       NAVD 88
 DG7620
 DG7620  VERT ORDER      -  SECOND    CLASS I
 DG7620
 DG7620.The horizontal coordinates were established by autonomous hand held GPS
 DG7620.observations and have an estimated accuracy of +/- 10 meters.
 DG7620
 DG7620.The orthometric height was determined by differential leveling and
 DG7620.adjusted by the NATIONAL GEODETIC SURVEY
 DG7620.in December 2004.
 DG7620
 DG7620.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7620.GEOID18 height accuracy estimate available here.
 DG7620
 DG7620.Click photographs - Photos may exist for this station.
 DG7620
 DG7620.The dynamic height is computed by dividing the NAVD 88
 DG7620.geopotential number by the normal gravity value computed on the
 DG7620.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7620.degrees latitude (g = 980.6199 gals.).
 DG7620
 DG7620.The modeled gravity was interpolated from observed gravity values.
 DG7620
 DG7620;                    North         East    Units  Estimated Accuracy
 DG7620;SPC MD       -   150,131.      505,015.      MT  (+/- 10 meters HH2 GPS)
 DG7620
 DG7620_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3182818498(NAD 83)
 DG7620
 DG7620                          SUPERSEDED SURVEY CONTROL
 DG7620
 DG7620.No superseded survey control is available for this station.
 DG7620
 DG7620_MARKER: DH = HORIZONTAL CONTROL DISK
 DG7620_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7620_STAMPING: BORO 1966
 DG7620_MARK LOGO: MDBCSM
 DG7620_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7620_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7620+STABILITY: SURFACE MOTION
 DG7620_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7620+SATELLITE: SATELLITE OBSERVATIONS - October 29, 2005
 DG7620
 DG7620  HISTORY     - Date     Condition        Report By
 DG7620  HISTORY     - 1966     MONUMENTED       MDBCSM
 DG7620  HISTORY     - 20021015 GOOD             MDSHA
 DG7620  HISTORY     - 20051029 GOOD             USPSQD
 DG7620
 DG7620                          STATION DESCRIPTION
 DG7620
 DG7620'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7620'THE STATION IS LOCATED ABOUT 2.9 MI (4.67 KM) NORTHEAST OF GREENSBORO,
 DG7620'4.9 MI (7.89 KM) SOUTHEAST OF BRIDGETOWN, AND 1.4 MI (2.25 KM) SOUTH
 DG7620'OF GOLDSBORO.  TO REACH THE STATION FROM THE POST OFFICE IN GOLDSBORO,
 DG7620'GO SOUTH ALONG STATE HIGHWAY 313 FOR 1.5 MI (2.41 KM) TO THE STATION
 DG7620'ON THE LEFT.  THE STATION IS A MARYLAND CONTROL SURVEY DISK SET IN THE
 DG7620'TOP OF A 6 INCH (15 CM) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH
 DG7620'THE GROUND.  IT IS 36.2 FT (11.0 M) SOUTHEAST OF THE CENTER LINE OF
 DG7620'THE HIGHWAY, 97.5 FT (29.7 M) SOUTHWEST OF THE PROJECTED CENTER LINE
 DG7620'OF THE SOUTHWEST DRIVEWAY TO HOUSE NUMBER 14816, 72.4 FT (22.1 M)
 DG7620'SOUTHWEST OF POWER POLE 41673-16764, 61.8 FT (18.8 M) EAST OF
 DG7620'TELEPHONE POLE 775, 2.5 FT (0.8 M) SOUTHEAST OF A GUY POLE, AND 1.5 FT
 DG7620'(0.5 M) NORTHWEST OF A CARSONITE WITNESS POST.
 DG7620
 DG7620                          STATION RECOVERY (2005)
 DG7620
 DG7620'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 DG7620'HOUSE NUMBER IS 14810.  THE MARK IS AT THE SOUTH END OF A CIRCULAR
 DG7620'DRIVEWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6636 ***********************************************************************
 HV6636  DESIGNATION -  BOSLEY 1901
 HV6636  PID         -  HV6636
 HV6636  STATE/COUNTY-  MD/DORCHESTER
 HV6636  COUNTRY     -  US
 HV6636  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV6636
 HV6636                         *CURRENT SURVEY CONTROL
 HV6636  ______________________________________________________________________
 HV6636* NAD 83(1991) POSITION- 38 29 25.47810(N) 076 17 02.15597(W)   ADJUSTED
 HV6636* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6636  ______________________________________________________________________
 HV6636  GEOID HEIGHT    -        -34.634 (meters)                     GEOID18
 HV6636  LAPLACE CORR    -         -5.28  (seconds)                    DEFLEC18
 HV6636  HORZ ORDER      -  THIRD
 HV6636
 HV6636.The horizontal coordinates were established by classical geodetic methods
 HV6636.and adjusted by the National Geodetic Survey in January 1992.
 HV6636
 HV6636.The orthometric height was scaled from a topographic map.
 HV6636
 HV6636.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6636.GEOID18 height accuracy estimate available here.
 HV6636
 HV6636.Click photographs - Photos may exist for this station.
 HV6636
 HV6636.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6636
 HV6636. The following values were computed from the NAD 83(1991) position.
 HV6636
 HV6636;                    North         East     Units Scale Factor Converg.
 HV6636;SPC MD       -    91,683.884   462,470.486   MT  0.99997233   +0 26 57.9
 HV6636;SPC MD       -   300,799.54  1,517,288.59   sFT  0.99997233   +0 26 57.9
 HV6636;UTM  18      - 4,261,010.283   388,026.866   MT  0.99975440   -0 47 57.1
 HV6636
 HV6636!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6636!SPC MD       -   1.00000531  x   0.99997233  =   0.99997764
 HV6636!UTM  18      -   1.00000531  x   0.99975440  =   0.99975971
 HV6636
 HV6636:                Primary Azimuth Mark                     Grid Az
 HV6636:SPC MD       -  HOLLAND                                  027 54 37.3
 HV6636:UTM  18      -  HOLLAND                                  029 09 32.3
 HV6636
 HV6636_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8802661010(NAD 83)
 HV6636
 HV6636|---------------------------------------------------------------------|
 HV6636| PID    Reference Object                     Distance      Geod. Az  |
 HV6636|                                                           dddmmss.s |
 HV6636| HV6644 HOLLAND                             APPROX. 0.8 KM 0282135.2 |
 HV6636| HV6635 MC MANUS 1901                       447.417 METERS 0980147.5 |
 HV6636|---------------------------------------------------------------------|
 HV6636
 HV6636                          SUPERSEDED SURVEY CONTROL
 HV6636
 HV6636  NAD 83(1986)-  38 29 25.47622(N)    076 17 02.17165(W) AD(       ) 3
 HV6636  NAD 27      -  38 29 25.06200(N)    076 17 03.33700(W) AD(       ) 3
 HV6636  USSD        -  38 29 25.43700(N)    076 17 03.12200(W) AD(       ) 3
 HV6636
 HV6636.Superseded values are not recommended for survey control.
 HV6636
 HV6636.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6636.See file dsdata.pdf to determine how the superseded data were derived.
 HV6636
 HV6636_MARKER: Z = SEE DESCRIPTION
 HV6636_SETTING: 0 = UNSPECIFIED SETTING
 HV6636_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6636
 HV6636  HISTORY     - Date     Condition        Report By
 HV6636  HISTORY     - 1901     MONUMENTED       CGS
 HV6636  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6636
 HV6636                          STATION DESCRIPTION
 HV6636
 HV6636'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (JWD)
 HV6636'ON W SIDE OF SLAUGHTER CREEK, ABOUT OPPOSITE STATION MC MANUS, AND
 HV6636'ENE OF BOSLEYS HOUSE.  MARKED BY A CEDAR STUB.
 HV6636
 HV6636                          STATION RECOVERY (1942)
 HV6636
 HV6636'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6636'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE
 HV6636'HOUR.  IT WAS VERY DIFFICULT SEARCHING FOR THIS STATION IN THE
 HV6636'TALL MARSH GRASS.  IT IS RECOMMENDED THAT THIS STATION BE
 HV6636'CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4780 ***********************************************************************
 AB4780  DESIGNATION -  BOTTOM
 AB4780  PID         -  AB4780
 AB4780  STATE/COUNTY-  MD/CARROLL
 AB4780  COUNTRY     -  US
 AB4780  USGS QUAD   -  NEW WINDSOR (2016)
 AB4780
 AB4780                         *CURRENT SURVEY CONTROL
 AB4780  ______________________________________________________________________
 AB4780* NAD 83(2011) POSITION- 39 30 26.72395(N) 077 00 21.69709(W)   ADJUSTED
 AB4780* NAD 83(2011) ELLIP HT-   221.313 (meters)        (06/27/12)   ADJUSTED
 AB4780* NAD 83(2011) EPOCH   -  2010.00
 AB4780* NAVD 88 ORTHO HEIGHT -   253.4   (meters)      831.    (feet) GPS OBS
 AB4780  ______________________________________________________________________
 AB4780  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4780  GEOID HEIGHT    -        -32.094 (meters)                     GEOID99
 AB4780  GEOID HEIGHT    -        -32.081 (meters)                     GEOID18
 AB4780  NAD 83(2011) X  -  1,108,020.501 (meters)                     COMP
 AB4780  NAD 83(2011) Y  - -4,801,668.407 (meters)                     COMP
 AB4780  NAD 83(2011) Z  -  4,036,080.234 (meters)                     COMP
 AB4780  LAPLACE CORR    -          2.08  (seconds)                    DEFLEC18
 AB4780
 AB4780  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4780  Standards:
 AB4780         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4780            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4780  -------------------------------------------------------------------
 AB4780  NETWORK    1.93   5.04           0.86   0.70   2.57     -0.08543095
 AB4780  -------------------------------------------------------------------
 AB4780  Click here for local accuracies and other accuracy information.
 AB4780
 AB4780.The horizontal coordinates were established by GPS observations
 AB4780.and adjusted by the National Geodetic Survey in June 2012.
 AB4780
 AB4780.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4780.been affixed to the stable North American tectonic plate. See 
 AB4780.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4780
 AB4780.The horizontal coordinates are valid at the epoch date displayed above
 AB4780.which is a decimal equivalence of Year/Month/Day.
 AB4780
 AB4780.The orthometric height was determined by GPS observations and a
 AB4780.high-resolution geoid model.
 AB4780
 AB4780.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4780.GEOID18 height accuracy estimate available here.
 AB4780
 AB4780.Click photographs - Photos may exist for this station.
 AB4780
 AB4780.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4780
 AB4780.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4780
 AB4780.The ellipsoidal height was determined by GPS observations
 AB4780.and is referenced to NAD 83.
 AB4780
 AB4780. The following values were computed from the NAD 83(2011) position.
 AB4780
 AB4780;                    North         East     Units Scale Factor Converg.
 AB4780;SPC MD       -   204,339.111   399,481.649   MT  1.00001055   -0 00 13.6
 AB4780;SPC MD       -   670,402.57  1,310,632.71   sFT  1.00001055   -0 00 13.6
 AB4780;UTM  18      - 4,375,009.502   327,535.336   MT  0.99996622   -1 16 35.4
 AB4780
 AB4780!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4780!SPC MD       -   0.99996528  x   1.00001055  =   0.99997583
 AB4780!UTM  18      -   0.99996528  x   0.99996622  =   0.99993150
 AB4780
 AB4780:                Primary Azimuth Mark                     Grid Az
 AB4780:SPC MD       -  BOTTOM AZ MK                             246 57 08.4
 AB4780:UTM  18      -  BOTTOM AZ MK                             248 13 30.2
 AB4780
 AB4780_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2753575009(NAD 83)
 AB4780
 AB4780|---------------------------------------------------------------------|
 AB4780| PID    Reference Object                     Distance      Geod. Az  |
 AB4780|                                                           dddmmss.s |
 AB4780| AB4794 BOTTOM AZ MK                        APPROX. 0.7 KM 2465654.8 |
 AB4780|---------------------------------------------------------------------|
 AB4780
 AB4780                          SUPERSEDED SURVEY CONTROL
 AB4780
 AB4780  NAD 83(2007)-  39 30 26.72422(N)    077 00 21.69789(W) AD(2002.00) 0
 AB4780  ELLIP H (02/10/07)  221.334  (m)                       GP(2002.00)    
 AB4780  ELLIP H (08/30/02)  221.332  (m)                       GP(       ) 4 2
 AB4780  NAD 83(1991)-  39 30 26.72371(N)    077 00 21.69838(W) AD(       ) 1
 AB4780  ELLIP H (07/03/96)  221.256  (m)                       GP(       ) 1 1
 AB4780  NAVD 88 (07/03/96)  253.4    (m)  GEOID93  model used  GPS OBS        
 AB4780
 AB4780.Superseded values are not recommended for survey control.
 AB4780
 AB4780.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4780.See file dsdata.pdf to determine how the superseded data were derived.
 AB4780
 AB4780_MARKER: DD = SURVEY DISK
 AB4780_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4780_STAMPING: BOTTOM 1995
 AB4780_MARK LOGO: MD-013
 AB4780_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4780_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4780+STABILITY: SURFACE MOTION
 AB4780_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4780+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4780
 AB4780  HISTORY     - Date     Condition        Report By
 AB4780  HISTORY     - 1995     MONUMENTED       MD-013
 AB4780
 AB4780                          STATION DESCRIPTION
 AB4780
 AB4780'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4780'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTH OF WESTMINSTER AND
 AB4780'ABOUT 5.5 MI (8.9 KM) SOUTHEAST OF NEW WINDSOR. TO REACH STATION FROM
 AB4780'THE INTERSECTION OF MD ROUTE 97 (WASHINGTON ROAD) AND MD ROUTE 32
 AB4780'(SYKESVILLE ROAD), GO SOUTH ON MD ROUTE 97 FOR 2.3 MI (3.7 KM) TO THE
 AB4780'INTERSECTION WITH NICODEMUS ROAD. TURN RIGHT ON NICODEMUS ROAD AND GO
 AB4780'NORTHWEST FOR 1.8 MI (2.9 KM) TO THE INTERSECTION WITH SALEM BOTTOM
 AB4780'ROAD. TURN RIGHT ON SALEM BOTTOM ROAD AND GO NORTHEAST FOR 0.75 MI
 AB4780'(1.21 KM) TO THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP
 AB4780'OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AB4780'16.0 FT (4.9 M) NORTH OF THE CENTERLINE OF THE ROAD, 5.0 FT (1.5 M)
 AB4780'SOUTH OF THE EDGE OF A CULTIVATED FIELD, 54.5 FT (16.6 M) EAST OF
 AB4780'TELEPHONE POLE NO.2 AND 15.0 FT (4.6 M) EAST OF THE CENTERLINE OF A
 AB4780'MACADAM DRIVE LEADING SOUTH TO HOUSE NO.2431.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4794 ***********************************************************************
 AB4794  DESIGNATION -  BOTTOM AZ MK
 AB4794  PID         -  AB4794
 AB4794  STATE/COUNTY-  MD/CARROLL
 AB4794  COUNTRY     -  US
 AB4794  USGS QUAD   -  NEW WINDSOR (2016)
 AB4794
 AB4794                         *CURRENT SURVEY CONTROL
 AB4794  ______________________________________________________________________
 AB4794* NAD 83(2011) POSITION- 39 30 17.76436(N) 077 00 48.87375(W)   ADJUSTED
 AB4794* NAD 83(2011) ELLIP HT-   209.739 (meters)        (06/27/12)   ADJUSTED
 AB4794* NAD 83(2011) EPOCH   -  2010.00
 AB4794* NAVD 88 ORTHO HEIGHT -   241.8   (meters)      793.    (feet) GPS OBS
 AB4794  ______________________________________________________________________
 AB4794  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4794  GEOID HEIGHT    -        -32.097 (meters)                     GEOID99
 AB4794  GEOID HEIGHT    -        -32.084 (meters)                     GEOID18
 AB4794  NAD 83(2011) X  -  1,107,425.339 (meters)                     COMP
 AB4794  NAD 83(2011) Y  - -4,801,976.945 (meters)                     COMP
 AB4794  NAD 83(2011) Z  -  4,035,859.670 (meters)                     COMP
 AB4794  LAPLACE CORR    -          2.33  (seconds)                    DEFLEC18
 AB4794
 AB4794  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4794  Standards:
 AB4794         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4794            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4794  -------------------------------------------------------------------
 AB4794  NETWORK    2.16   5.84           0.94   0.80   2.98     -0.22546538
 AB4794  -------------------------------------------------------------------
 AB4794  Click here for local accuracies and other accuracy information.
 AB4794
 AB4794.The horizontal coordinates were established by GPS observations
 AB4794.and adjusted by the National Geodetic Survey in June 2012.
 AB4794
 AB4794.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4794.been affixed to the stable North American tectonic plate. See 
 AB4794.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4794
 AB4794.The horizontal coordinates are valid at the epoch date displayed above
 AB4794.which is a decimal equivalence of Year/Month/Day.
 AB4794
 AB4794.The orthometric height was determined by GPS observations and a
 AB4794.high-resolution geoid model.
 AB4794
 AB4794.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4794.GEOID18 height accuracy estimate available here.
 AB4794
 AB4794.Click photographs - Photos may exist for this station.
 AB4794
 AB4794.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4794
 AB4794.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4794
 AB4794.The ellipsoidal height was determined by GPS observations
 AB4794.and is referenced to NAD 83.
 AB4794
 AB4794. The following values were computed from the NAD 83(2011) position.
 AB4794
 AB4794;                    North         East     Units Scale Factor Converg.
 AB4794;SPC MD       -   204,062.861   398,832.349   MT  1.00001007   -0 00 30.7
 AB4794;SPC MD       -   669,496.24  1,308,502.47   sFT  1.00001007   -0 00 30.7
 AB4794;UTM  18      - 4,374,747.753   326,880.087   MT  0.99996901   -1 16 52.5
 AB4794
 AB4794!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4794!SPC MD       -   0.99996710  x   1.00001007  =   0.99997717
 AB4794!UTM  18      -   0.99996710  x   0.99996901  =   0.99993611
 AB4794
 AB4794:                Primary Azimuth Mark                     Grid Az
 AB4794:SPC MD       -  BOTTOM                                   066 57 08.2
 AB4794:UTM  18      -  BOTTOM                                   068 13 30.0
 AB4794
 AB4794_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2688074747(NAD 83)
 AB4794
 AB4794|---------------------------------------------------------------------|
 AB4794| PID    Reference Object                     Distance      Geod. Az  |
 AB4794|                                                           dddmmss.s |
 AB4794| AB4780 BOTTOM                              APPROX. 0.7 KM 0665637.5 |
 AB4794|---------------------------------------------------------------------|
 AB4794
 AB4794                          SUPERSEDED SURVEY CONTROL
 AB4794
 AB4794  NAD 83(2007)-  39 30 17.76464(N)    077 00 48.87456(W) AD(2002.00) 0
 AB4794  ELLIP H (02/10/07)  209.760  (m)                       GP(2002.00)    
 AB4794  ELLIP H (08/30/02)  209.757  (m)                       GP(       ) 4 2
 AB4794  NAD 83(1991)-  39 30 17.76415(N)    077 00 48.87512(W) AD(       ) 1
 AB4794  ELLIP H (07/03/96)  209.682  (m)                       GP(       ) 1 1
 AB4794  NAVD 88 (07/03/96)  241.8    (m)  GEOID93  model used  GPS OBS        
 AB4794
 AB4794.Superseded values are not recommended for survey control.
 AB4794
 AB4794.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4794.See file dsdata.pdf to determine how the superseded data were derived.
 AB4794
 AB4794_MARKER: DD = SURVEY DISK
 AB4794_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4794_STAMPING: BOTTOM AZI 1995
 AB4794_MARK LOGO: MD-013
 AB4794_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4794_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4794+STABILITY: SURFACE MOTION
 AB4794_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4794+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4794
 AB4794  HISTORY     - Date     Condition        Report By
 AB4794  HISTORY     - 1995     MONUMENTED       MD-013
 AB4794
 AB4794                          STATION DESCRIPTION
 AB4794
 AB4794'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4794'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTH OF WESTMINSTER AND
 AB4794'ABOUT 5.5 MI (8.9 KM) SOUTHEAST OF NEW WINDSOR. TO REACH STATION FROM
 AB4794'THE INTERSECTION OF MD ROUTE 97 (WASHINGTON ROAD) AND MD ROUTE 32
 AB4794'(SYKESVILLE ROAD), GO SOUTH ON MD ROUTE 97 FOR 2.3 MI (3.7 KM) TO THE
 AB4794'INTERSECTION WITH NICODEMUS ROAD. TURN RIGHT ON NICODEMUS ROAD AND GO
 AB4794'NORTHWEST FOR 1.8 MI (2.9 KM) TO THE INTERSECTION WITH SALEM BOTTOM
 AB4794'ROAD. TURN RIGHT ON SALEM BOTTOM ROAD AND GO NORTHEAST FOR 0.35 MI
 AB4794'(0.56 KM) TO THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP
 AB4794'OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AB4794'15.5 FT (4.7 M) NORTH OF THE CENTERLINE OF THE ROAD AND 36.0 FT (11.0
 AB4794'M) WEST OF POWER POLE NO.353275.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3849 ***********************************************************************
 JU3849  DESIGNATION -  BOUNDARY ARC STONE 5 DE MD
 JU3849  PID         -  JU3849
 JU3849  STATE/COUNTY-  MD/CECIL
 JU3849  COUNTRY     -  US
 JU3849  USGS QUAD   -  NEWARK WEST (2016)
 JU3849
 JU3849                         *CURRENT SURVEY CONTROL
 JU3849  ______________________________________________________________________
 JU3849* NAD 83(1991) POSITION- 39 39 55.01118(N) 075 47 20.03038(W)   ADJUSTED
 JU3849* NAVD 88 ORTHO HEIGHT -    35.5   (meters)      116.    (feet) VERTCON3
 JU3849  ______________________________________________________________________
 JU3849  GEOID HEIGHT    -        -33.036 (meters)                     GEOID18
 JU3849  LAPLACE CORR    -          1.01  (seconds)                    DEFLEC18
 JU3849  HORZ ORDER      -  SECOND
 JU3849
 JU3849.The horizontal coordinates were established by classical geodetic methods
 JU3849.and adjusted by the National Geodetic Survey in January 1992.
 JU3849
 JU3849.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3849.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3849
 JU3849.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3849.GEOID18 height accuracy estimate available here.
 JU3849
 JU3849.Click photographs - Photos may exist for this station.
 JU3849
 JU3849.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3849
 JU3849. The following values were computed from the NAD 83(1991) position.
 JU3849
 JU3849;                    North         East     Units Scale Factor Converg.
 JU3849;SPC MD       -   222,555.358   503,925.525   MT  1.00004476   +0 45 36.5
 JU3849;SPC MD       -   730,167.04  1,653,295.66   sFT  1.00004476   +0 45 36.5
 JU3849;UTM  18      - 4,390,905.113   432,331.917   MT  0.99965637   -0 30 12.9
 JU3849
 JU3849!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3849!SPC MD       -   0.99999962  x   1.00004476  =   1.00004438
 JU3849!UTM  18      -   0.99999962  x   0.99965637  =   0.99965599
 JU3849
 JU3849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3233190905(NAD 83)
 JU3849
 JU3849                          SUPERSEDED SURVEY CONTROL
 JU3849
 JU3849  NAD 83(1986)-  39 39 55.00522(N)    075 47 20.03678(W) AD(       ) 2
 JU3849  NAD 27      -  39 39 54.61090(N)    075 47 21.27110(W) AD(       ) 2
 JU3849  NGVD 29 (07/19/86)   35.8    (m)          117.     (f) VERT ANG       
 JU3849
 JU3849.Superseded values are not recommended for survey control.
 JU3849
 JU3849.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3849.See file dsdata.pdf to determine how the superseded data were derived.
 JU3849
 JU3849_MARKER: V = STONE MONUMENT
 JU3849_SETTING: 0 = UNSPECIFIED SETTING
 JU3849
 JU3849  HISTORY     - Date     Condition        Report By
 JU3849  HISTORY     - 1765     MONUMENTED       MASDIX
 JU3849  HISTORY     - 1961     GOOD             CGS
 JU3849  HISTORY     - 20080711 POOR             GEOCAC
 JU3849
 JU3849                          STATION DESCRIPTION
 JU3849
 JU3849'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3849'THE STATION IS LOCATED ABOUT 2.5 MILES SOUTHWEST OF NEWARK,
 JU3849'DELAWARE, 2.0 MILES EAST-SOUTHEAST OF ELK MILLS, MARYLAND, ON
 JU3849'PROPERTY OF E.I. DUPONT AND COMPANY, INCORPORATED, STINE
 JU3849'LABORATORIES, 500.0 FEET SOUTH-SOUTHWEST OF A BLACKTOP ROAD,
 JU3849'160.0 FEET NORTHEAST OF THE WEST EDGE OF A TIMBERLINE AND 85.0
 JU3849'FEET SOUTHEAST OF THE SOUTH EDGE OF A TIMBERLINE AND IS INCLOSED
 JU3849'BY A POLE FENCE.  THIS STONE IS UNMARKED, PLACED AT ITS
 JU3849'LOCATION IN 1765, IT LEANS SLIGHTLY.
 JU3849'
 JU3849'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION BOUNDARY
 JU3849'MONUMENT 83, DISTANCE BEING 221.895 METERS NORTH OF STATION
 JU3849'BOUNDARY MONUMENT 83.  IT IS AN UNMARKED STONE, 6 X 12 INCHES
 JU3849'AND PROJECTING ABOUT 14 INCHES ABOVE THE SURFACE OF THE GROUND.
 JU3849
 JU3849                          STATION RECOVERY (2008)
 JU3849
 JU3849'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 JU3849'THE STONE IS LOCATED IN A WOODED AREA ON THE STINE-HASKELL RESEARCH
 JU3849'LABORATORY GROUNDS.  IT IS ABOUT 75 FEET NORTHWEST OF THE NORTHWEST
 JU3849'EDGE OF A PARKING LOT, ABOUT 65 FEET NORTHWEST OF A PIPELINE JUNCTION,
 JU3849'ABOUT 20 FEET NORTHWEST OF A SMALL CREEK, ABOUT SIX FEET
 JU3849'NORTHWEST OF A MULTI-TRUNKED TREE, AND IN A TEN FOOT SQUARE SPLIT RAIL
 JU3849'ENCLOSURE.  THE STONE PROJECTS ABOUT 14 INCHES AND LEANS ABOUT FIVE
 JU3849'DEGREES TO THE SOUTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3851 ***********************************************************************
 JU3851  DESIGNATION -  BOUNDARY ARC STONE 2 DE MD
 JU3851  PID         -  JU3851
 JU3851  STATE/COUNTY-  MD/CECIL
 JU3851  COUNTRY     -  US
 JU3851  USGS QUAD   -  NEWARK WEST (2016)
 JU3851
 JU3851                         *CURRENT SURVEY CONTROL
 JU3851  ______________________________________________________________________
 JU3851* NAD 83(1991) POSITION- 39 39 34.84819(N) 075 47 20.44254(W)   ADJUSTED
 JU3851* NAVD 88 ORTHO HEIGHT -    35.9   (meters)      118.    (feet) VERTCON3
 JU3851  ______________________________________________________________________
 JU3851  GEOID HEIGHT    -        -33.043 (meters)                     GEOID18
 JU3851  LAPLACE CORR    -          1.24  (seconds)                    DEFLEC18
 JU3851  HORZ ORDER      -  THIRD
 JU3851
 JU3851.The horizontal coordinates were established by classical geodetic methods
 JU3851.and adjusted by the National Geodetic Survey in January 1992.
 JU3851
 JU3851.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3851.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3851
 JU3851.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3851.GEOID18 height accuracy estimate available here.
 JU3851
 JU3851.Click photographs - Photos may exist for this station.
 JU3851
 JU3851.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3851
 JU3851. The following values were computed from the NAD 83(1991) position.
 JU3851
 JU3851;                    North         East     Units Scale Factor Converg.
 JU3851;SPC MD       -   221,933.405   503,923.950   MT  1.00004341   +0 45 36.2
 JU3851;SPC MD       -   728,126.51  1,653,290.49   sFT  1.00004341   +0 45 36.2
 JU3851;SPC PA S     -    38,104.637   768,279.954   MT  1.00005405   +1 16 20.2
 JU3851;SPC PA S     -   125,014.96  2,520,598.48   sFT  1.00005405   +1 16 20.2
 JU3851;UTM  18      - 4,390,283.587   432,316.633   MT  0.99965640   -0 30 12.9
 JU3851
 JU3851!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3851!SPC MD       -   0.99999956  x   1.00004341  =   1.00004297
 JU3851!SPC PA S     -   0.99999956  x   1.00005405  =   1.00005361
 JU3851!UTM  18      -   0.99999956  x   0.99965640  =   0.99965596
 JU3851
 JU3851_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3231690283(NAD 83)
 JU3851
 JU3851                          SUPERSEDED SURVEY CONTROL
 JU3851
 JU3851  NAD 83(1986)-  39 39 34.84203(N)    075 47 20.44969(W) AD(       ) 3
 JU3851  NAD 83(1986)-  39 39 34.84194(N)    075 47 20.44832(W) AD(       ) 2
 JU3851  NAD 27      -  39 39 34.44730(N)    075 47 21.68300(W) AD(       ) 2
 JU3851  NGVD 29 (07/19/86)   35.9    (m)          118.     (f) VERT ANG       
 JU3851
 JU3851.Superseded values are not recommended for survey control.
 JU3851
 JU3851.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3851.See file dsdata.pdf to determine how the superseded data were derived.
 JU3851
 JU3851_MARKER: V = STONE MONUMENT
 JU3851_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JU3851_SP_SET: OBJECT IMBEDDED IN GROUND
 JU3851_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU3851_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3851_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3851+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2010
 JU3851
 JU3851  HISTORY     - Date     Condition        Report By
 JU3851  HISTORY     - 1765     MONUMENTED       MASDIX
 JU3851  HISTORY     - 1961     POOR             CGS
 JU3851  HISTORY     - 20080612 GOOD             GEOCAC
 JU3851  HISTORY     - 20100925 GOOD             GEOCAC
 JU3851
 JU3851                          STATION DESCRIPTION
 JU3851
 JU3851'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3851'THE STATION IS LOCATED ABOUT 2.5 MILES SOUTHWEST OF NEWARK,
 JU3851'DELAWARE, 2.0 MILES EAST-SOUTHEAST OF ELK MILLS, MARYLAND, ON
 JU3851'PROPERTY OF E.I. DUPONT AND COMPANY, INCORPORATED, STINE
 JU3851'LABORATORIES, 200.0 FEET WEST OF THE CENTERLINE OF A DIM TRACK
 JU3851'ROAD AND 63.4 FEET NORTH OF AN EAST AND WEST FENCELINE AND
 JU3851'NORTH EDGE OF A TIMBERLINE AND IS INCLOSED BY A POLE FENCE.
 JU3851'
 JU3851'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION
 JU3851'BOUNDARY MONUMENT 83, DISTANCE BEING 400.054 METERS SOUTH OF
 JU3851'STATION BOUNDARY MONUMENT 83.  IT IS ARC STONE NO. 2 1765, AN
 JU3851'UNMARKED STONE.  IT HAS BEEN BROKEN OFF AT GROUND LEVEL AND NOW
 JU3851'SETS ON OLD BASE OR WHAT IS BELIEVED TO BE OLD BASE AT THE
 JU3851'ORIGINAL LOCATION.  IT IS A 7 X 12 INCH STONE PROJECTING ABOUT
 JU3851'28 INCHES ABOVE THE SURFACE OF THE GROUND.
 JU3851
 JU3851                          STATION RECOVERY (2008)
 JU3851
 JU3851'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 JU3851'THE STONE IS IN A POLE FENCE ENCLOSURE IN AN UNCULTIVATED FIELD ON THE
 JU3851'GROUNDS OF THE STINE-HASKELL RESEARCH CENTER, A SUBSIDIARY OF DU PONT.
 JU3851'ACCESS TO THE STONE IS WITH THE PERMISSION OF AND UNDER THE
 JU3851'SUPERVISION OF THE CENTER'S SECURITY STAFF.  THE SECURITY OFFICE IS
 JU3851'ADJACENT TO THE MAIN GATE.
 JU3851
 JU3851                          STATION RECOVERY (2010)
 JU3851
 JU3851'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU3851'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3852 ***********************************************************************
 JU3852  DESIGNATION -  BOUNDARY ARC STONE 3 DE MD
 JU3852  PID         -  JU3852
 JU3852  STATE/COUNTY-  MD/CECIL
 JU3852  COUNTRY     -  US
 JU3852  USGS QUAD   -  NEWARK WEST (2016)
 JU3852
 JU3852                         *CURRENT SURVEY CONTROL
 JU3852  ______________________________________________________________________
 JU3852* NAD 83(1991) POSITION- 39 39 35.25032(N) 075 47 20.47749(W)   ADJUSTED
 JU3852* NAVD 88 ORTHO HEIGHT -    36.0   (meters)      118.    (feet) VERTCON3
 JU3852  ______________________________________________________________________
 JU3852  GEOID HEIGHT    -        -33.043 (meters)                     GEOID18
 JU3852  LAPLACE CORR    -          1.23  (seconds)                    DEFLEC18
 JU3852  HORZ ORDER      -  SECOND
 JU3852
 JU3852.The horizontal coordinates were established by classical geodetic methods
 JU3852.and adjusted by the National Geodetic Survey in January 1992.
 JU3852
 JU3852.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3852.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3852
 JU3852.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3852.GEOID18 height accuracy estimate available here.
 JU3852
 JU3852.Click photographs - Photos may exist for this station.
 JU3852
 JU3852.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3852
 JU3852. The following values were computed from the NAD 83(1991) position.
 JU3852
 JU3852;                    North         East     Units Scale Factor Converg.
 JU3852;SPC MD       -   221,945.796   503,922.953   MT  1.00004344   +0 45 36.2
 JU3852;SPC MD       -   728,167.17  1,653,287.22   sFT  1.00004344   +0 45 36.2
 JU3852;SPC PA S     -    38,117.018   768,278.846   MT  1.00005403   +1 16 20.2
 JU3852;SPC PA S     -   125,055.58  2,520,594.85   sFT  1.00005403   +1 16 20.2
 JU3852;UTM  18      - 4,390,295.992   432,315.909   MT  0.99965640   -0 30 12.9
 JU3852
 JU3852!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3852!SPC MD       -   0.99999954  x   1.00004344  =   1.00004298
 JU3852!SPC PA S     -   0.99999954  x   1.00005403  =   1.00005357
 JU3852!UTM  18      -   0.99999954  x   0.99965640  =   0.99965594
 JU3852
 JU3852_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3231590295(NAD 83)
 JU3852
 JU3852                          SUPERSEDED SURVEY CONTROL
 JU3852
 JU3852  NAD 83(1986)-  39 39 35.24416(N)    075 47 20.48453(W) AD(       ) 2
 JU3852  NAD 27      -  39 39 34.84960(N)    075 47 21.71920(W) AD(       ) 2
 JU3852  NGVD 29 (03/25/91)   36.4    (m)          119.     (f) VERT ANG       
 JU3852  NGVD 29 (07/19/86)   35.3    (m)          116.     (f) VERT ANG       
 JU3852
 JU3852.Superseded values are not recommended for survey control.
 JU3852
 JU3852.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3852.See file dsdata.pdf to determine how the superseded data were derived.
 JU3852
 JU3852_MARKER: X = CHISELED CROSS
 JU3852_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JU3852_SP_SET: OBJECT IMBEDDED IN GROUND
 JU3852_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU3852_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3852_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3852+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2010
 JU3852
 JU3852  HISTORY     - Date     Condition        Report By
 JU3852  HISTORY     - 1961     MONUMENTED       CGS
 JU3852  HISTORY     - 20080612 GOOD             GEOCAC
 JU3852  HISTORY     - 20100925 GOOD             GEOCAC
 JU3852
 JU3852                          STATION DESCRIPTION
 JU3852
 JU3852'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3852'THE STATION IS LOCATED ABOUT 2.5 MILES SOUTHWEST OF NEWARK,
 JU3852'DELAWARE, 2.0 MILES EAST-SOUTHEAST OF ELK MILLS, MARYLAND, ON
 JU3852'PROPERTY OF E.I. DUPONT AND COMPANY, INCORPORATED, STINE
 JU3852'LABORATORIES, 200.0 FEET WEST OF THE CENTERLINE OF A DIM TRACK
 JU3852'ROAD, 104.0 FEET NORTH OF AN EAST AND WEST FENCELINE AT THE NORTH
 JU3852'EDGE OF A TIMBERLINE AND 40.6 FEET NORTH OF ARC STONE NO. 2.
 JU3852'
 JU3852'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION BOUNDARY
 JU3852'MONUMENT 83, DISTANCE BEING 387.662 METERS SOUTH OF STATION
 JU3852'BOUNDARY MONUMENT 83.  IT IS ARC STONE NO. 3 1849, WAS PLACED AT
 JU3852'THE CENTER OF THE, MERIDIAN, OF THE ARC BY GRAHAMS SURVEY IN
 JU3852'1849.  IT IS A 8 X 12 INCH GRANITE STONE PROJECTING ABOUT 25
 JU3852'INCHES ABOVE THE SURFACE OF THE GROUND.  A SMALL CROSS WAS
 JU3852'ETCHED AT THE APEX AND CENTER OF THE STONE TO HOLD THE CENTER
 JU3852'POINT FOR MEASURING.  THE LETTER M IS ENGRAVED ON THE WEST SIDE
 JU3852'AND LETTER D, 1849 ON THE EAST SIDE.
 JU3852
 JU3852                          STATION RECOVERY (2008)
 JU3852
 JU3852'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 JU3852'THE STONE IS IN A POLE FENCE ENCLOSURE IN AN UNCULTIVATED FIELD ON THE
 JU3852'GROUNDS OF THE STINE-HASKELL RESEARCH CENTER, A SUBSIDIARY OF DU PONT.
 JU3852'ACCESS TO THE STONE IS WITH THE PERMISSION OF AND UNDER THE
 JU3852'SUPERVISION OF THE CENTER'S SECURITY STAFF.  THE SECURITY OFFICE IS
 JU3852'ADJACENT TO THE MAIN GATE.
 JU3852
 JU3852                          STATION RECOVERY (2010)
 JU3852
 JU3852'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU3852'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6100 ***********************************************************************
 JV6100  DESIGNATION -  BOUNDARY MON 43 MD PA
 JV6100  PID         -  JV6100
 JV6100  STATE/COUNTY-  MD/BALTIMORE
 JV6100  COUNTRY     -  US
 JV6100  USGS QUAD   -  NORRISVILLE (2016)
 JV6100
 JV6100                         *CURRENT SURVEY CONTROL
 JV6100  ______________________________________________________________________
 JV6100* NAD 83(1991) POSITION- 39 43 16.22929(N) 076 35 49.16917(W)   ADJUSTED
 JV6100* NAVD 88 ORTHO HEIGHT -   214.    (meters)      702.    (feet) SCALED
 JV6100  ______________________________________________________________________
 JV6100  GEOID HEIGHT    -        -32.433 (meters)                     GEOID18
 JV6100  LAPLACE CORR    -         -1.70  (seconds)                    DEFLEC18
 JV6100  HORZ ORDER      -  FIRST
 JV6100
 JV6100.The horizontal coordinates were established by classical geodetic methods
 JV6100.and adjusted by the National Geodetic Survey in January 1992.
 JV6100
 JV6100.The orthometric height was scaled from a topographic map.
 JV6100
 JV6100.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6100.GEOID18 height accuracy estimate available here.
 JV6100
 JV6100.Click photographs - Photos may exist for this station.
 JV6100
 JV6100.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6100
 JV6100. The following values were computed from the NAD 83(1991) position.
 JV6100
 JV6100;                    North         East     Units Scale Factor Converg.
 JV6100;SPC MD       -   228,148.399   434,555.937   MT  1.00005870   +0 15 10.6
 JV6100;SPC MD       -   748,516.87  1,425,705.60   sFT  1.00005870   +0 15 10.6
 JV6100;SPC PA S     -    43,709.578   698,860.284   MT  1.00003995   +0 44 53.0
 JV6100;SPC PA S     -   143,403.84  2,292,844.12   sFT  1.00003995   +0 44 53.0
 JV6100;UTM  18      - 4,398,030.286   363,125.175   MT  0.99983065   -1 01 14.6
 JV6100
 JV6100!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6100!SPC MD       -   0.99997155  x   1.00005870  =   1.00003025
 JV6100!SPC PA S     -   0.99997155  x   1.00003995  =   1.00001150
 JV6100!UTM  18      -   0.99997155  x   0.99983065  =   0.99980221
 JV6100
 JV6100:                Primary Azimuth Mark                     Grid Az
 JV6100:SPC MD       -  BOUNDARY MON 43 RM 1 AZIMUTH             026 12 27.8
 JV6100:SPC PA S     -  BOUNDARY MON 43 RM 1 AZIMUTH             025 42 45.4
 JV6100:UTM  18      -  BOUNDARY MON 43 RM 1 AZIMUTH             027 28 53.0
 JV6100
 JV6100_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6312598030(NAD 83)
 JV6100
 JV6100|---------------------------------------------------------------------|
 JV6100| PID    Reference Object                     Distance      Geod. Az  |
 JV6100|                                                           dddmmss.s |
 JV6100| CA9990 BOUNDARY MON 43 RM 1 AZIMUTH                       0262738.4 |
 JV6100| CA9991 BOUNDARY MON 43 RM 2                 24.049 METERS 09033     |
 JV6100| CA9992 BOUNDARY MON 43 RM 3                 24.308 METERS 30259     |
 JV6100|---------------------------------------------------------------------|
 JV6100
 JV6100                          SUPERSEDED SURVEY CONTROL
 JV6100
 JV6100  NAD 83(1986)-  39 43 16.22156(N)    076 35 49.17120(W) AD(       ) 1
 JV6100  NAD 27      -  39 43 15.84900(N)    076 35 50.28500(W) AD(       ) 1
 JV6100
 JV6100.Superseded values are not recommended for survey control.
 JV6100
 JV6100.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6100.See file dsdata.pdf to determine how the superseded data were derived.
 JV6100
 JV6100_MARKER: DS = TRIANGULATION STATION DISK
 JV6100_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6100_STAMPING: BOUNDARY 43 1933
 JV6100_MARK LOGO: CGS
 JV6100_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6100+STABILITY: SURFACE MOTION
 JV6100_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6100+SATELLITE: SATELLITE OBSERVATIONS - November 02, 2005
 JV6100
 JV6100  HISTORY     - Date     Condition        Report By
 JV6100  HISTORY     - 1933     MONUMENTED       CGS
 JV6100  HISTORY     - 1935     GOOD             CGS
 JV6100  HISTORY     - 1962     GOOD             LOCENG
 JV6100  HISTORY     - 20051102 GOOD             MD-005
 JV6100
 JV6100                          STATION DESCRIPTION
 JV6100
 JV6100'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV6100'THIS IS A FIRST-ORDER STATION ON THE MARYLAND-PENNSYLVANIA STATE
 JV6100'LINE, WHICH IS ALSO THE PROPERTY LINE BETWEEN J.C. BLANKENSHIP
 JV6100'(MD.) AND STANLEY ALMONY (PENNA.) THE MARK IS A STANDARD DISK
 JV6100'EMBEDDED FLUSH IN THE TOP OF MD., -PA. BOUNDARY MONUMENT NO. 43,
 JV6100'WHICH IS A STONE MONUMENT ROUGHLY 12 INCHES SQUARE EMBEDDED
 JV6100'VERTICALLY IN THE GROUND.  THE NORTH EDGE OF THE MONUMENT IS
 JV6100'FLUSH WITH THE GROUND.  THE SOUTH EDGE OF THE MONUMENT IS ABOUT
 JV6100'8 INCHES ABOVE THE GROUND WITH AN M VISIBLE.  THE DISK IS
 JV6100'STAMPED BOUNDARY 43, 1933.  THE STATION IS 12 PACES EAST OF
 JV6100'EASTERN TIP OF A POINT OF WOODS, IN LINE WITH THE SOUTHERN
 JV6100'EDGE OF THE WOODS, WHICH IS ALONG THE STATE LINE.  TO REACH
 JV6100'FROM BALTIMORE, GO NORTH ON HIGHWAY 111 TO THE TOWN
 JV6100'MARYLAND LINE, TURN EAST ON HARRIS MILL ROAD, A NARROW DIRT
 JV6100'ROAD, WHICH LEAVES HIGHWAY 111 AT NORTH EDGE OF MARYLAND LINE,
 JV6100'AND GO 3.3 MILES FOLLOWING THE MAIN ROAD, PAST AN OLD MILL
 JV6100'TO MR. J.C. BLANKENSHIPS RESIDENCE, A STONE HOUSE ON LEFT.  TURN
 JV6100'LEFT AT THE HOUSE AND GO 0.35 MILE UP A STEEP GRADE TO THE TOP
 JV6100'OF BOUNDARY RIDGE.  EMERGING FROM THE WOODS AT THE TOP OF THE
 JV6100'RIDGE TURN SHARPLY TO THE RIGHT IN THE EDGE OF A FIELD (NO
 JV6100'ROAD), AND FOLLOW THE (NORTH) EDGE OF THE WOODS TO THE EASTERN
 JV6100'TIP OF THE WOODS, AND CONTINUE 12 PACES BEYOND THE WOODS, IN
 JV6100'LINE WITH THE SOUTH EDGE OF THE WOODS TO THE STATION.
 JV6100'
 JV6100'R. M. NO. 1, THE AZIMUTH MARK IS ON THE WILSON FARM, 50 FEET
 JV6100'NORTHWEST OF NORTHWEST CORNER OF A RED BARN 250 FEET WEST OF RED
 JV6100'BRICK HOUSE, 7 FEET SOUTH OF 8 INCH APPLE TREE, IN FENCE LINE
 JV6100'WEST OF BARN YARD.
 JV6100'
 JV6100'R. M. NO. 2 IS APPROX. OF THE STATE LINE, 12 FEET WNW OF A
 JV6100'14-INCH CHERRY TREE.  IT PROJECTS 6-INCHES ABOVE GROUND.
 JV6100'
 JV6100'R. M. NO. 3 IS 14 PACES NORTHWEST OF THE EASTERN TIP OF THE
 JV6100'WOODS, IN THE EDGE OF THE WOODS.  IT PROJECTS 6-INCHES ABOVE
 JV6100'GROUND.
 JV6100'
 JV6100'TRUCKS MAY BE DRIVEN DIRECTLY TO THE STATION IN GOOD WEATHER
 JV6100'AND WITH PERMISSION OF THE PROPERTY OWNERS.
 JV6100'
 JV6100'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6100
 JV6100                          STATION RECOVERY (1935)
 JV6100
 JV6100'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (CFM)
 JV6100'RECENTLY OCCUPIED THIS STATION AND FOUND NO DIFFICULTY IN
 JV6100'FOLLOWING DIRECTIONS DIRECTLY TO THE MARKER.  STATION, REFERENCE
 JV6100'MARKS AND TANK USED FOR REFERENCE POINT IN GOOD CONDITION.
 JV6100
 JV6100                          STATION RECOVERY (1962)
 JV6100
 JV6100'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1962
 JV6100'RECOVERED BY MAPS INC.
 JV6100'
 JV6100'STATION FOUND IN GOOD CONDITION WITH SOME CHANGES IN DESCRIPTION.
 JV6100'
 JV6100'THE STATION IS 18 INCHES ABOVE GROUND INSTEAD FLUSH.  IT
 JV6100'APPROXIMATELY 100 FEET E OF EASTERN TIP OF WOODS INSTEAD OF
 JV6100'12 PACES.
 JV6100'
 JV6100'R.M. 1 IS NOW ON CARROLL JONESS FARM INSTEAD OF WILSON AND THE
 JV6100'FENCE LINE IS REMOVED.
 JV6100
 JV6100                          STATION RECOVERY (2005)
 JV6100
 JV6100'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2005 (PAS)
 JV6100'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1499 ***********************************************************************
 JV1499  DESIGNATION -  BOUNDARY MON 46 RM 2
 JV1499  PID         -  JV1499
 JV1499  STATE/COUNTY-  MD/BALTIMORE
 JV1499  COUNTRY     -  US
 JV1499  USGS QUAD   -  NEW FREEDOM (2019)
 JV1499
 JV1499                         *CURRENT SURVEY CONTROL
 JV1499  ______________________________________________________________________
 JV1499* NAD 83(1986) POSITION- 39 43 15.11   (N) 076 39 24.17   (W)   HD_HELD1
 JV1499* NAVD 88 ORTHO HEIGHT -   265.991 (meters)      872.67  (feet) ADJUSTED
 JV1499  ______________________________________________________________________
 JV1499  GEOID HEIGHT    -        -32.383 (meters)                     GEOID18
 JV1499  DYNAMIC HEIGHT  -        265.857 (meters)      872.23  (feet) COMP
 JV1499  MODELED GRAVITY -    980,116.6   (mgal)                       NAVD 88
 JV1499
 JV1499  VERT ORDER      -  SECOND    CLASS 0
 JV1499
 JV1499.The horizontal coordinates were determined by differentially corrected
 JV1499.hand held GPS observations or other comparable positioning techniques
 JV1499.and have an estimated accuracy of +/- 3 meters.
 JV1499
 JV1499.The orthometric height was determined by differential leveling and
 JV1499.adjusted by the NATIONAL GEODETIC SURVEY
 JV1499.in June 1991.
 JV1499
 JV1499.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1499.GEOID18 height accuracy estimate available here.
 JV1499
 JV1499.Click photographs - Photos may exist for this station.
 JV1499
 JV1499.The dynamic height is computed by dividing the NAVD 88
 JV1499.geopotential number by the normal gravity value computed on the
 JV1499.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1499.degrees latitude (g = 980.6199 gals.).
 JV1499
 JV1499.The modeled gravity was interpolated from observed gravity values.
 JV1499
 JV1499;                    North         East    Units  Estimated Accuracy
 JV1499;SPC MD       -   228,092.9     429,435.2     MT  (+/- 3 meters HH1 GPS) 
 JV1499
 JV1499_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5800598088(NAD 83)
 JV1499
 JV1499                          SUPERSEDED SURVEY CONTROL
 JV1499
 JV1499  NGVD 29 (11/26/84)  266.203  (m)          873.37   (f) ADJUSTED    2 0
 JV1499
 JV1499.Superseded values are not recommended for survey control.
 JV1499
 JV1499.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1499.See file dsdata.pdf to determine how the superseded data were derived.
 JV1499
 JV1499_MARKER: DR = REFERENCE MARK DISK
 JV1499_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1499_STAMPING: BOUNDRY NO 46 NO 2 1933
 JV1499_MARK LOGO: CGS
 JV1499_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1499+STABILITY: SURFACE MOTION
 JV1499
 JV1499  HISTORY     - Date     Condition        Report By
 JV1499  HISTORY     - 1933     MONUMENTED       CGS
 JV1499  HISTORY     - 1959     GOOD             CGS
 JV1499  HISTORY     - 1961     GOOD             CGS
 JV1499
 JV1499                          STATION DESCRIPTION
 JV1499
 JV1499'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1499'0.2 MI N FROM MARYLAND LINE.
 JV1499'0.2 MILE NORTH ALONG OLD U.S. HIGHWAY 111 FROM THE FIRE STATION
 JV1499'AT MARYLAND LINE, ALONG A FENCE LINE, NEAR THE
 JV1499'MARYLAND-PENNSYLVANIA STATE LINE, BETWEEN OLD U.S. HIGHWAY 111
 JV1499'AND THE NEW HIGHWAY, 228.5 FEET WEST OF THE STATION, 36 FEET
 JV1499'NORTH OF A FENCE CORNER, 1 FOOT EAST OF A NORTH-SOUTH FENCE LINE
 JV1499'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES ABOVE
 JV1499'THE GROUND.
 JV1499
 JV1499                          STATION RECOVERY (1961)
 JV1499
 JV1499'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961
 JV1499'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6120 ***********************************************************************
 JV6120  HT_MOD      -  This is a Height Modernization Survey Station.
 JV6120  DESIGNATION -  BOUNDARY MON 50 MD PA
 JV6120  PID         -  JV6120
 JV6120  STATE/COUNTY-  MD/BALTIMORE
 JV6120  COUNTRY     -  US
 JV6120  USGS QUAD   -  NEW FREEDOM (2019)
 JV6120
 JV6120                         *CURRENT SURVEY CONTROL
 JV6120  ______________________________________________________________________
 JV6120* NAD 83(2011) POSITION- 39 43 15.37047(N) 076 43 44.46515(W)   ADJUSTED
 JV6120* NAD 83(2011) ELLIP HT-   239.714 (meters)        (08/29/25)   ADJUSTED
 JV6120* NAD 83(2011) EPOCH   -  2010.00
 JV6120* NAVD 88 ORTHO HEIGHT -   272.09  (meters)      892.7   (feet) GPS OBS
 JV6120  ______________________________________________________________________
 JV6120  GEOID HEIGHT    -        -32.376 (meters)                     GEOID18
 JV6120  NAD 83(2011) X  -  1,127,755.517 (meters)                     COMP
 JV6120  NAD 83(2011) Y  - -4,781,557.130 (meters)                     COMP
 JV6120  NAD 83(2011) Z  -  4,054,354.470 (meters)                     COMP
 JV6120  LAPLACE CORR    -          0.34  (seconds)                    DEFLEC18
 JV6120
 JV6120  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6120  Standards:
 JV6120         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6120            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6120  -------------------------------------------------------------------
 JV6120  NETWORK    0.66   1.39           0.29   0.25   0.71     -0.01286279
 JV6120  -------------------------------------------------------------------
 JV6120  Click here for local accuracies and other accuracy information.
 JV6120
 JV6120.The horizontal coordinates were established by GPS observations
 JV6120.and adjusted by the MD DOT HIGHWAY ADMIN in August 2025.
 JV6120
 JV6120.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 JV6120.frame has been affixed to the stable North American tectonic plate 
 JV6120
 JV6120.The horizontal coordinates are valid at the epoch date displayed above
 JV6120.which is a decimal equivalence of Year/Month/Day.
 JV6120
 JV6120.The orthometric height was determined by GPS observations and a
 JV6120.high-resolution geoid model using precise GPS observation and
 JV6120.processing techniques.
 JV6120
 JV6120.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6120.GEOID18 height accuracy estimate available here.
 JV6120
 JV6120.Click photographs - Photos may exist for this station.
 JV6120
 JV6120.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6120
 JV6120.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6120
 JV6120.The ellipsoidal height was determined by GPS observations
 JV6120.and is referenced to NAD 83.
 JV6120
 JV6120. The following values were computed from the NAD 83(2011) position.
 JV6120
 JV6120;                    North         East     Units Scale Factor Converg.
 JV6120;SPC MD       -   228,080.120   423,235.441   MT  1.00005864   +0 10 12.3
 JV6120;SPC MD       -   748,292.86  1,388,564.94   sFT  1.00005864   +0 10 12.3
 JV6120;SPC PA S     -    43,543.755   687,541.009   MT  1.00004000   +0 39 44.7
 JV6120;SPC PA S     -   142,859.80  2,255,707.46   sFT  1.00004000   +0 39 44.7
 JV6120;UTM  18      - 4,398,213.767   351,808.320   MT  0.99987037   -1 06 18.5
 JV6120
 JV6120!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6120!SPC MD       -   0.99996239  x   1.00005864  =   1.00002103
 JV6120!SPC PA S     -   0.99996239  x   1.00004000  =   1.00000239
 JV6120!UTM  18      -   0.99996239  x   0.99987037  =   0.99983277
 JV6120
 JV6120:                Primary Azimuth Mark                     Grid Az
 JV6120:SPC MD       -  BOUNDARY MONUMENT 50 RM 2                269 19 59.8
 JV6120:SPC PA S     -  BOUNDARY MONUMENT 50 RM 2                268 50 27.4
 JV6120:UTM  18      -  BOUNDARY MONUMENT 50 RM 2                270 36 30.6
 JV6120
 JV6120_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5180898213(NAD 83)
 JV6120
 JV6120|---------------------------------------------------------------------|
 JV6120| PID    Reference Object                     Distance      Geod. Az  |
 JV6120|                                                           dddmmss.s |
 JV6120| JV6078 SHREWSBURY WATER TANK               APPROX. 6.0 KM 0474346.7 |
 JV6120| JV6074 STEWARTSTOWN WATER TANK             APPROX.12.4 KM 0710416.4 |
 JV6120| CA9707 BOUNDARY MONUMENT 50 RM 1            63.188 METERS 21408     |
 JV6120| CA9708 BOUNDARY MONUMENT 50 RM 2                          2693012.1 |
 JV6120| CA9709 BOUNDARY MONUMENT 50 RM 3            47.851 METERS 32711     |
 JV6120|---------------------------------------------------------------------|
 JV6120
 JV6120                          SUPERSEDED SURVEY CONTROL
 JV6120
 JV6120  NAD 83(1991)-  39 43 15.36789(N)    076 43 44.46393(W) AD(       ) 1
 JV6120  NAD 83(1986)-  39 43 15.36159(N)    076 43 44.46875(W) AD(       ) 1
 JV6120  NAD 27      -  39 43 14.98900(N)    076 43 45.56400(W) AD(       ) 1
 JV6120
 JV6120.Superseded values are not recommended for survey control.
 JV6120
 JV6120.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6120.See file dsdata.pdf to determine how the superseded data were derived.
 JV6120
 JV6120_MARKER: DS = TRIANGULATION STATION DISK
 JV6120_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV6120+WITH SETTING: PAVEMENT
 JV6120_SP_SET: BOUNDARY MONUMENT
 JV6120_STAMPING: MONUMENT NO.50 1933
 JV6120_MARK LOGO: CGS
 JV6120_PROJECTION: PROJECTING 46 CENTIMETERS
 JV6120_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6120+STABILITY: SURFACE MOTION
 JV6120_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6120+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2024
 JV6120
 JV6120  HISTORY     - Date     Condition        Report By
 JV6120  HISTORY     - 1933     MONUMENTED       CGS
 JV6120  HISTORY     - 1934     GOOD             CGS
 JV6120  HISTORY     - 1934     GOOD             CGS
 JV6120  HISTORY     - 1960     GOOD             LOCENG
 JV6120  HISTORY     - 20041129 GOOD             GEOCAC
 JV6120  HISTORY     - 20051107 GOOD             MD-005
 JV6120  HISTORY     - 20240829 GOOD             MDSHA
 JV6120
 JV6120                          STATION DESCRIPTION
 JV6120
 JV6120'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV6120'THE STATION IS A STANDARD U.S.C. AND G.S. STATION MARK CEMENTED
 JV6120'INTO THE TOP CENTER OF MARYLAND-PENNSYLVANIA BOUNDARY MONUMENT
 JV6120'NO. 50 WHICH IS A STONE POST ABOUT 12 INCHES BY 11 INCHES
 JV6120'PROJECTING 18 INCHES ABOVE GROUND WITH THE COAT OF ARMS OF PA.,
 JV6120'ON THE NORTH SIDE AND THAT OF MARYLAND ON THE SOUTH SIDE.  IT IS
 JV6120'140 FEET E. OF INTERSECTION OF A ROAD LYING ALONG THE BOUNDARY
 JV6120'LINE AND A NORTH AND SOUTH ROAD LOCALLY KNOWN AS RUHL ROAD, AND
 JV6120'24 FEET WEST-NORTH-WEST OF A LONE 24-INCH CHERRY TREE.  MARK
 JV6120'STAMPED MONUMENT NO. 50, 1933.
 JV6120'
 JV6120'TO REACH FROM THE INTERSECTION OF SIGN-DESIGNATED MIDDLETOWN
 JV6120'ROAD AND U.S. ROUTE NO. 111 HIGHWAY (BALTIMORE-YORK, PA. HIGHWAY)
 JV6120'WHICH INTERSECTION IS 1.3 MILES SOUTH OF PARKTON OR 3.0 MILES
 JV6120'NORTH OF HEREFORD, MD., TAKE MIDDLETOWN ROAD AND GO NORTHWESTERLY
 JV6120'7.4 MILES OR 3.3 MILES BEYOND SIXTH DIST. CONSOLIDATED SCHOOL
 JV6120'AND TURN RIGHT.  KEEP THIS MAIN ROAD 1.9 MILES TO THE BOUNDARY
 JV6120'LINE.  TRUCKS MAY BE DRIVEN DIRECTLY TO THE STATION.
 JV6120'
 JV6120'REFERENCE MARK NO. 1 IS 15 FEET EAST OF CENTERLINE OF NORTH AND
 JV6120'SOUTH ROAD AND 10 FEET NORTH OF 20-INCH TREE.
 JV6120'
 JV6120'REFERENCE MARKS ARE STANDARD BRONZE TABLETS AS DESCRIBED IN
 JV6120'
 JV6120'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6120
 JV6120                          STATION RECOVERY (1934)
 JV6120
 JV6120'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 JV6120'THE STATION WAS FOUND AS DESCRIBED.  THE DESCRIPTION WAS ADEQUATE
 JV6120'IN ALL RESPECTS.
 JV6120'
 JV6120'NO PROMINENT OBJECTS V.G.
 JV6120
 JV6120                          STATION RECOVERY (1934)
 JV6120
 JV6120'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JSB)
 JV6120'STATION MARK AND REFERENCE MARKS FOUND IN GOOD CONDITION AS
 JV6120'DESCRIBED BY L. P. GIBBON ON CARD NO. 292.  IT IS BEST REACHED
 JV6120'BY FOLLOWING U.S. HIGHWAY NO. 111 TO A T CONCRETE ROAD LEADING
 JV6120'WEST AT A GARAGE 1.6 MILES NORTH OF THE MD.--PA. STATE
 JV6120'LINE.  THERE TURN WEST ON THE CONCRETE ROAD AND GO 1.6 MILES TO
 JV6120'NEW FREEDOM.  THEN CONTINUE SOUTHWEST 1.6 MILES TO A DIRT T ROAD
 JV6120'JUST EAST OF A LARGE DAIRY BARN.  THERE TURN TO LEFT ON THE T
 JV6120'DIRT ROAD AND FOLLOW 0.6 MILE TO THE STATION.  THE LAND SOUTH
 JV6120'OF THE STATION BELONGS TO MR. HARRY E. THOMAS, WHO LIVES ABOUT
 JV6120'1/2 MILE SOUTHEAST.  THE LAND NORTH OF THE STATION BELONGS TO
 JV6120'MR. KENNETH SHAW, WHO LIVES NORTHEAST OF THE STATION.
 JV6120'
 JV6120'THE STATION IS A STANDARD U.S.C. AND G. SURVEY STATION MARK
 JV6120'CEMENTED INTO THE TOP CENTER OF MARYLAND--PENNSYLVANIA BOUNDARY
 JV6120'MONUMENT NO. 50, WHICH IS A STONE POST ABOUT 12-INCHES BY
 JV6120'11-INCHES PROJECTING ABOUT 18 INCHES ABOVE GROUND WITH THE COAT
 JV6120'OF ARMS OF PA. ON THE NORTH SIDE AND THAT OF MD. ON THE SOUTH
 JV6120'SIDE.  IT IS 140 FEET EAST OF INTERSECTION OF A ROAD LYING ALONG
 JV6120'THE BOUNDARY LINE AND A NORTH-SOUTH ROAD LOCALLY KNOWN AS RUHL
 JV6120'ROAD, AND 24 FEET WNW OF A LONE 24-INCH CHERRY TREE.  MARK
 JV6120'STAMPED MONUMENT NO. 50, 1933.
 JV6120'
 JV6120'R. M. 1 IS 15 FEET EAST OF CL OF NORTH-SOUTH ROAD AND 10 FEET
 JV6120'NORTH OF 20 INCH TREE.
 JV6120'
 JV6120'R. M. NO. 2 IS 10 FEET SOUTH OF CL OF STATE LINE ROAD WEST OF
 JV6120'STATION AND 12 FEET EAST OF 18-INCH OAK TREE.
 JV6120'
 JV6120'R. M. 3 IS 12 FEET EAST OF CL OF ROAD AND 20 FEET NORTH-NORTHEAST
 JV6120'OF 20-INCH CHERRY TREE.
 JV6120
 JV6120                          STATION RECOVERY (1960)
 JV6120
 JV6120'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1960
 JV6120'RECOVERED BY MAPS INC.
 JV6120'
 JV6120'STATION AND REFERENCE MARKS FOUND IN GOOD CONDITION.
 JV6120
 JV6120                          STATION RECOVERY (2004)
 JV6120
 JV6120'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6120'STATION IS IN GOOD CONDITION CEMENTED IN THE TOP OF A 12-INCH BY
 JV6120'11-INCH STONE POST THAT PROJECTS ABOUT 16 INCHES AND WHICH LIES ALONG
 JV6120'THE SOUTH EDGE OF THE LAWN FOR HOUSE NUMBER 3743 EAST RUHL ROAD.
 JV6120'REFERENCE MARK 3 IS IN GOOD CONDITION CEMENTED IN THE TOP OF A ROUND
 JV6120'CONCRETE MONUMENT THAT PROJECTS 15 INCHES, 157 FEET NORTHWEST OF THE
 JV6120'STATION AND IN THE FRONT LAWN OF THE HOUSE, 12 FEET EAST OF THE
 JV6120'CENTERLINE OF EAST RUHL ROAD.  REFERENCE MARK 1 IS IN POOR CONDITION
 JV6120'CEMENTED IN THE TOP OF A ROUND CONCRETE MONUMENT THAT TILTS TO THE
 JV6120'NORTH AT A 60-DEGREE ANGLE, 207 FEET SOUTH-SOUTHEAST OF THE STATION
 JV6120'AND 15 FEET EAST OF THE CENTERLINE OF EAST RUHL ROAD.  REFERENCE MARK
 JV6120'2 WAS NOT SEARCHED FOR.
 JV6120
 JV6120                          STATION RECOVERY (2005)
 JV6120
 JV6120'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2005 (PAS)
 JV6120'RECOVERED IN GOOD CONDITION
 JV6120
 JV6120                          STATION RECOVERY (2024)
 JV6120
 JV6120'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 JV6120'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6123 ***********************************************************************
 JV6123  DESIGNATION -  BOUNDARY MON 54 MD PA
 JV6123  PID         -  JV6123
 JV6123  STATE/COUNTY-  MD/CARROLL
 JV6123  COUNTRY     -  US
 JV6123  USGS QUAD   -  LINEBORO (2016)
 JV6123
 JV6123                         *CURRENT SURVEY CONTROL
 JV6123  ______________________________________________________________________
 JV6123* NAD 83(1991) POSITION- 39 43 14.50754(N) 076 48 23.88777(W)   ADJUSTED
 JV6123* NAVD 88 ORTHO HEIGHT -   268.    (meters)      879.    (feet) SCALED
 JV6123  ______________________________________________________________________
 JV6123  GEOID HEIGHT    -        -32.430 (meters)                     GEOID18
 JV6123  LAPLACE CORR    -          2.28  (seconds)                    DEFLEC18
 JV6123  HORZ ORDER      -  FIRST
 JV6123
 JV6123.The horizontal coordinates were established by classical geodetic methods
 JV6123.and adjusted by the National Geodetic Survey in January 1992.
 JV6123
 JV6123.The orthometric height was scaled from a topographic map.
 JV6123
 JV6123.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6123.GEOID18 height accuracy estimate available here.
 JV6123
 JV6123.Click photographs - Photos may exist for this station.
 JV6123
 JV6123.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6123
 JV6123. The following values were computed from the NAD 83(1991) position.
 JV6123
 JV6123;                    North         East     Units Scale Factor Converg.
 JV6123;SPC MD       -   228,036.578   416,580.178   MT  1.00005858   +0 07 16.9
 JV6123;SPC MD       -   748,150.01  1,366,730.13   sFT  1.00005858   +0 07 16.9
 JV6123;SPC PA S     -    43,443.126   680,886.488   MT  1.00004005   +0 36 43.4
 JV6123;SPC PA S     -   142,529.66  2,233,875.09   sFT  1.00004005   +0 36 43.4
 JV6123;UTM  18      - 4,398,318.381   345,154.908   MT  0.99989520   -1 09 17.1
 JV6123
 JV6123!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6123!SPC MD       -   0.99996308  x   1.00005858  =   1.00002166
 JV6123!SPC PA S     -   0.99996308  x   1.00004005  =   1.00000313
 JV6123!UTM  18      -   0.99996308  x   0.99989520  =   0.99985828
 JV6123
 JV6123:                Primary Azimuth Mark                     Grid Az
 JV6123:SPC MD       -  BOUNDARY MON 54 AZ MK                    240 03 38.9
 JV6123:SPC PA S     -  BOUNDARY MON 54 AZ MK                    239 34 12.4
 JV6123:UTM  18      -  BOUNDARY MON 54 AZ MK                    241 20 12.9
 JV6123
 JV6123_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4515498318(NAD 83)
 JV6123
 JV6123|---------------------------------------------------------------------|
 JV6123| PID    Reference Object                     Distance      Geod. Az  |
 JV6123|                                                           dddmmss.s |
 JV6123| JV6609 BOUNDARY MON 54 RM 1                 25.824 METERS 16347     |
 JV6123| CA9964 BOUNDARY MON 54 AZ MK                              2401055.8 |
 JV6123| JV6610 BOUNDARY MON 54 RM 2                 21.949 METERS 24312     |
 JV6123| JV6567 BOUNDARY MON 54 MD PA RM 3          237.108 METERS 27531     |
 JV6123|---------------------------------------------------------------------|
 JV6123
 JV6123                          SUPERSEDED SURVEY CONTROL
 JV6123
 JV6123  NAD 83(1986)-  39 43 14.50196(N)    076 48 23.88905(W) AD(       ) 1
 JV6123  NAD 27      -  39 43 14.13200(N)    076 48 24.97400(W) AD(       ) 1
 JV6123
 JV6123.Superseded values are not recommended for survey control.
 JV6123
 JV6123.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6123.See file dsdata.pdf to determine how the superseded data were derived.
 JV6123
 JV6123_MARKER: DS = TRIANGULATION STATION DISK
 JV6123_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6123_STAMPING: BNDRY MON 54 1939
 JV6123_MARK LOGO: CGS
 JV6123_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6123_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6123_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6123+SATELLITE: SATELLITE OBSERVATIONS - November 07, 2005
 JV6123
 JV6123  HISTORY     - Date     Condition        Report By
 JV6123  HISTORY     - 1939     MONUMENTED       CGS
 JV6123  HISTORY     - 1939     GOOD             CGS
 JV6123  HISTORY     - 1962     GOOD             LOCENG
 JV6123  HISTORY     - 19830316 GOOD             NGS
 JV6123  HISTORY     - 20040222 GOOD             MD-005
 JV6123  HISTORY     - 20051107 GOOD             MD-005
 JV6123
 JV6123                          STATION DESCRIPTION
 JV6123
 JV6123'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV6123'STATION IS LOCATED ABOUT 7-1/2 MILES NE OF MANCHESTER ON THE NE
 JV6123'SIDE OF A SE AND NW DIRT ROAD AND ON THE S SIDE OF AN E AND W
 JV6123'DIRT ROAD.
 JV6123'
 JV6123'MARK IS SET IN A DRILL HOLE IN THE TOP OF BOUNDARY MONUMENT
 JV6123'NO.54 WHICH IS A STONE 1-FOOT SQUARE AND PROJECTS 14 INCHES AND
 JV6123'HAS A LETTER M ON THE S SIDE AND THE LETTER P ON THE N SIDE.  IT
 JV6123'IS 15 FEET S OF AN 8-INCH OAK TREE, 20 FEET E OF AN 8-INCH OAK
 JV6123'TREE, 36 FEET NE OF THE CENTER LINE OF A DIRT ROAD, 20 FEET N OF
 JV6123'A TRIANGLE-BLAZED 5-INCH OAK TREE AND 24 FEET NE OF A
 JV6123'TRIANGLE-BLAZED 6-INCH OAK TREE.
 JV6123'
 JV6123'THE STATION, REFERENCE, AND AZIMUTH MARKS ARE STANDARD BRONZE
 JV6123'DISKS SET IN CONCRETE.
 JV6123'
 JV6123'REFERENCE MARK NO.1 IS S OF STATION PROJECTS 4 INCHES.  IT IS
 JV6123'12 FEET W OF THE CENTER LINE OF A DIRT ROAD AND 27 FEET WEST OF
 JV6123'A 12-INCH OAK TREE.
 JV6123'
 JV6123'REFERENCE MARK NO.2 IS W OF STATION PROJECTS 4 INCHES.  IT IS
 JV6123'14 FEET S OF THE CENTER LINE OF A DIRT ROAD, 5 FEET W OF A 12-INCH
 JV6123'OAK TREE AND 7 FEET N OF A 10-INCH OAK TREE.
 JV6123'
 JV6123'THE AZIMUTH IS APPROXIMATELY 0.3 MILE W OF THE STATION IN A
 JV6123'FIELD ON THE N SIDE OF A DIRT ROAD LEADING TO THE STATION.  MARK
 JV6123'IS SET IN CONCRETE AND PROJECTS 8 INCHES.  IT IS 18 FEET N OF
 JV6123'THE CENTER LINE OF A DIRT ROAD AND 27 FEET WSW OF AN 8-INCH OAK
 JV6123'TREE AT SW EDGE OF A WOODS.
 JV6123'
 JV6123'TO REACH THE STATION FROM MANCHESTER GO N ON HIGHWAY 30 FOR 5.1
 JV6123'MILES TO DIRT CROSS ROAD, TURN RIGHT AND GO S FOR 0.8 MILE TO A
 JV6123'FORK, CONTINUE ON LEFT FORK FOR 0.15 MILE TO FORKS, TAKE RIGHT
 JV6123'FORK UP HILL FOR 0.45 MILE TO T-ROAD, TURN LEFT AND GO 0.3 MILE
 JV6123'TO AZIMUTH ON THE LEFT, CONTINUE 0.2 MILE TO CROSS ROAD AT STATE
 JV6123'LINE, CONTINUE STRAIGHT AHEAD FOR 0.05 MILE TO STATION IN
 JV6123'TIMBER.
 JV6123'
 JV6123'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6123
 JV6123                          STATION RECOVERY (1939)
 JV6123
 JV6123'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939
 JV6123'RECOVERED IN GOOD CONDITION.
 JV6123
 JV6123                          STATION RECOVERY (1962)
 JV6123
 JV6123'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1962
 JV6123'RECOVERED BY MAPS INC.
 JV6123'
 JV6123'STATION AND R.M. 1 FOUND IN GOOD CONDITION.  AZIMUTH MARK NOT
 JV6123'SEARCHED FOR.
 JV6123
 JV6123                          STATION RECOVERY (1983)
 JV6123
 JV6123'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JV6123'THE STATION MARK ALONG WITH BOTH REFERENCE MARKS WERE RECOVERED AND
 JV6123'FOUND IN GOOD CONDITION.  THE AZIMUTH MARK WAS SEARCHED FOR BUT NOT
 JV6123'FOUND AND BELIEVED DESTROYED BY ROAD CONSTRUCTION.  THERE IS NO
 JV6123'SUITABLE LOCATION AVAILABLE TO SET A NEW AZIMUTH MARK AT THIS DATE DUE
 JV6123'TO THICK VEGETATION AND A LACK OF PERMISSION TO CUT THE VEGETATION.  A
 JV6123'DISTANT REFERENCE MARK THREE WAS ESTABLISHED SINCE AN AZIMUTH WAS
 JV6123'REQUIRED FOR THIS PROJECT.  A SHORTER DISTANCE OF 0.004 M (0.01 FT)
 JV6123'WAS NOTED TO REFERENCE MARK ONE.  ALL OTHER DISTANCES AND DIRECTIONS
 JV6123'TO THE REFERENCE MARKS WERE WITHIN CLOSE AGREEMENT WITH THE MOST
 JV6123'RECENT INFORMATION AVAILABLE.
 JV6123'A COMPLETE NEW DESCRIPTION FOR THIS STATION FOLLOWS.
 JV6123'THE STATION IS LOCATED ABOUT 12 KM (7.45 MI) NORTHEAST OF MANCHESTER,
 JV6123'4 KM (2.50 MI) EAST OF LINEBORO AND 9.5 KM (5.90 MI) SOUTHWEST OF GLEN
 JV6123'ROCK, PENNSYLVANIA.  OWNERSHIP--MRS. E.J.BROBECK, ROUTE 3 BOX 140 GLEN
 JV6123'ROCK, PENNSYLVANIA.  ZIP CODE 17327.
 JV6123'TO REACH FROM THE POST OFFICE IN LINEBORO, GO NORTHEAST ON
 JV6123'PENNSYLVANIA STATE HIGHWAY 516 FOR 4.2 KM (2.60 MI) TO A SIDE ROAD
 JV6123'RIGHT.  TURN RIGHT AND GO SOUTHERLY ON A PAVED ROAD FOR 2.8 KM
 JV6123'(1.75 MI) TO A CROSSROADS AT THE INTERSECTION OF SCHALK ROAD ONE,
 JV6123'GRAVE RUN ROAD AND LINEBORO ROAD.  TURN LEFT AND GO EAST ON LINEBORO
 JV6123'ROAD FOR 0.1 KM (0.05 MI) TO THE STATION ON THE LEFT.
 JV6123'THE DISK IS SET IN THE TOP OF A 0.3 M (1.0 FT) SQUARE CONCRETE
 JV6123'MONUMENT WHICH PROJECTS 0.33 M (1.1 FT) ABOVE THE SURFACE OF THE
 JV6123'GROUND.  IT IS 108.36 M (355.5 FT) EAST OF THE CENTER OF GRAVE RUN
 JV6123'ROAD, 10.67 M (35.0 FT) NORTH OF THE CENTER OF LINEBORO ROAD, 1.13 M
 JV6123'(3.7 FT) SOUTH OF A CARSONITE WITNESS POST AND 3.35 M (11.0 FT) NORTH
 JV6123'OF A 0.3 M (1.0 FT) OAK TREE.
 JV6123
 JV6123                          STATION RECOVERY (2004)
 JV6123
 JV6123'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2004 (GIB)
 JV6123'RECOVERED IN GOOD CONDITION.
 JV6123
 JV6123                          STATION RECOVERY (2005)
 JV6123
 JV6123'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2005 (PAS)
 JV6123'STATION AND R.M. 2 RECOVERED IN GOOD CONDITION. AZIMUTH MARK AND OTHER
 JV6123'REFERENCE MARKS WERE NOT SEARCHED FOR AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6569 ***********************************************************************
 JV6569  DESIGNATION -  BOUNDARY MON 55 MD PA RESET
 JV6569  PID         -  JV6569
 JV6569  STATE/COUNTY-  MD/CARROLL
 JV6569  COUNTRY     -  US
 JV6569  USGS QUAD   -  LINEBORO (2016)
 JV6569
 JV6569                         *CURRENT SURVEY CONTROL
 JV6569  ______________________________________________________________________
 JV6569* NAD 83(1991) POSITION- 39 43 14.40665(N) 076 49 25.27426(W)   ADJUSTED
 JV6569* NAVD 88 ORTHO HEIGHT -   209.    (meters)      686.    (feet) SCALED
 JV6569  ______________________________________________________________________
 JV6569  GEOID HEIGHT    -        -32.451 (meters)                     GEOID18
 JV6569  LAPLACE CORR    -          2.58  (seconds)                    DEFLEC18
 JV6569  HORZ ORDER      -  SECOND
 JV6569
 JV6569.The horizontal coordinates were established by classical geodetic methods
 JV6569.and adjusted by the National Geodetic Survey in January 1992.
 JV6569
 JV6569.The orthometric height was scaled from a topographic map.
 JV6569
 JV6569.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6569.GEOID18 height accuracy estimate available here.
 JV6569
 JV6569.Click photographs - Photos may exist for this station.
 JV6569
 JV6569.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6569
 JV6569. The following values were computed from the NAD 83(1991) position.
 JV6569
 JV6569;                    North         East     Units Scale Factor Converg.
 JV6569;SPC MD       -   228,030.506   415,118.067   MT  1.00005857   +0 06 38.4
 JV6569;SPC MD       -   748,130.09  1,361,933.19   sFT  1.00005857   +0 06 38.4
 JV6569;SPC PA S     -    43,424.537   679,424.510   MT  1.00004006   +0 36 03.5
 JV6569;SPC PA S     -   142,468.67  2,229,078.58   sFT  1.00004006   +0 36 03.5
 JV6569;UTM  18      - 4,398,344.871   343,693.259   MT  0.99990080   -1 09 56.4
 JV6569
 JV6569!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6569!SPC MD       -   0.99997230  x   1.00005857  =   1.00003087
 JV6569!SPC PA S     -   0.99997230  x   1.00004006  =   1.00001236
 JV6569!UTM  18      -   0.99997230  x   0.99990080  =   0.99987311
 JV6569
 JV6569_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4369398344(NAD 83)
 JV6569
 JV6569                          SUPERSEDED SURVEY CONTROL
 JV6569
 JV6569  NAD 83(1986)-  39 43 14.40058(N)    076 49 25.27558(W) AD(       ) 2
 JV6569
 JV6569.Superseded values are not recommended for survey control.
 JV6569
 JV6569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6569.See file dsdata.pdf to determine how the superseded data were derived.
 JV6569
 JV6569_MARKER: V = STONE MONUMENT
 JV6569_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 JV6569_SP_SET: SURROUNDED BY MASS OF CONCRETE
 JV6569_MARK LOGO: NGS
 JV6569_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6569_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6569_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6569+SATELLITE: SATELLITE OBSERVATIONS - July 08, 2004
 JV6569
 JV6569  HISTORY     - Date     Condition        Report By
 JV6569  HISTORY     - 1983     MONUMENTED       NGS
 JV6569  HISTORY     - 20040708 GOOD             GEOCAC
 JV6569
 JV6569                          STATION DESCRIPTION
 JV6569
 JV6569'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JV6569'THE MONUMENT IS LOCATED ABOUT 11.25 KM (7.00 MI) NORTHEAST OF
 JV6569'MANCHESTER, 2.5 KM (1.55 MI) EAST OF LINEBORO AND 11 KM (6.85 MI)
 JV6569'SOUTHWEST OF GLEN ROCK, PENNSYLVANIA.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV6569'TO REACH FROM THE POST OFFICE IN LINEBORO, GO NORTHEAST ON
 JV6569'PENNSYLVANIA STATE HIGHWAY 516 FOR 1.9 KM (1.20 MI) TO A CROSSROADS.
 JV6569'TURN RIGHT AND GO SOUTHEAST ON A PAVED ROAD FOR 1.3 KM (0.80 MI) TO A
 JV6569'SIDE ROAD RIGHT AND THE MONUMENT IN THE NORTHWEST ANGLE OF THE
 JV6569'INTERSECTION.
 JV6569'THE STATION IS THE APEX OF THE 0.3 M (1.0 FT) SQUARE LIMESTONE
 JV6569'MARYLAND-PENNSYLVANIA BOUNDARY MONUMENT WHICH PROJECTS 0.45 M
 JV6569'(1.5 FT) AND IT IS SET IN A 1.3 M (4.3 FT) SQUARE, 1.0 M (3.3 FT) DEEP
 JV6569'MASS OF CONCRETE.  THE ENTIRE MONUMENT IS INSIDE OF A WROUGHT IRON
 JV6569'ENCLOSURE.  IT IS 16.0 M (52.5 FT) WEST OF THE CENTER OF CARROLL
 JV6569'WAREHIME ROAD, 7.3 M (24.0 FT) NORTH OF THE CENTER OF BAUGHMAN MILL
 JV6569'ROAD AND 5.5 M (18.0 FT) SOUTHEAST OF THE SOUTHEAST FACE OF A 1.5 M
 JV6569'(4.9 FT) HIGH ROCK OUTCROP.
 JV6569
 JV6569                          STATION RECOVERY (2004)
 JV6569
 JV6569'RECOVERY NOTE BY GEOCACHING 2004 (DH)
 JV6569'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4168 ***********************************************************************
 JV4168  DESIGNATION -  BOUNDARY MON 65 ECC
 JV4168  PID         -  JV4168
 JV4168  STATE/COUNTY-  MD/CARROLL
 JV4168  COUNTRY     -  US
 JV4168  USGS QUAD   -  LITTLESTOWN (2019)
 JV4168
 JV4168                         *CURRENT SURVEY CONTROL
 JV4168  ______________________________________________________________________
 JV4168* NAD 83(1991) POSITION- 39 43 11.94310(N) 077 00 48.97816(W)   ADJUSTED
 JV4168* NAVD 88 ORTHO HEIGHT -   249.    (meters)      817.    (feet) SCALED
 JV4168  ______________________________________________________________________
 JV4168  GEOID HEIGHT    -        -32.807 (meters)                     GEOID18
 JV4168  LAPLACE CORR    -          4.90  (seconds)                    DEFLEC18
 JV4168  HORZ ORDER      -  FIRST
 JV4168
 JV4168.The horizontal coordinates were established by classical geodetic methods
 JV4168.and adjusted by the National Geodetic Survey in January 1992.
 JV4168
 JV4168.The orthometric height was scaled from a topographic map.
 JV4168
 JV4168.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4168.GEOID18 height accuracy estimate available here.
 JV4168
 JV4168.Click photographs - Photos may exist for this station.
 JV4168
 JV4168.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4168
 JV4168. The following values were computed from the NAD 83(1991) position.
 JV4168
 JV4168;                    North         East     Units Scale Factor Converg.
 JV4168;SPC MD       -   227,940.009   398,833.413   MT  1.00005840   -0 00 30.7
 JV4168;SPC MD       -   747,833.18  1,308,505.96   sFT  1.00005840   -0 00 30.7
 JV4168;SPC PA S     -    43,195.260   663,141.517   MT  1.00004021   +0 28 40.0
 JV4168;SPC PA S     -   141,716.45  2,175,656.79   sFT  1.00004021   +0 28 40.0
 JV4168;UTM  18      - 4,398,617.405   327,412.674   MT  0.99996672   -1 17 13.5
 JV4168
 JV4168!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4168!SPC MD       -   0.99996612  x   1.00005840  =   1.00002451
 JV4168!SPC PA S     -   0.99996612  x   1.00004021  =   1.00000632
 JV4168!UTM  18      -   0.99996612  x   0.99996672  =   0.99993284
 JV4168
 JV4168:                Primary Azimuth Mark                     Grid Az
 JV4168:SPC MD       -  BOUNDARY MON 65 ECC AZ MK                023 53 15.1
 JV4168:SPC PA S     -  BOUNDARY MON 65 ECC AZ MK                023 24 04.4
 JV4168:UTM  18      -  BOUNDARY MON 65 ECC AZ MK                025 09 57.9
 JV4168
 JV4168_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2741298617(NAD 83)
 JV4168
 JV4168|---------------------------------------------------------------------|
 JV4168| PID    Reference Object                     Distance      Geod. Az  |
 JV4168|                                                           dddmmss.s |
 JV4168| CK6587 BOUNDARY MON 65 ECC AZ MK                          0235244.4 |
 JV4168| CK6588 BOUNDARY MON 65 ECC RM 1             31.389 METERS 07956     |
 JV4168| CJ8164 BOUNDARY MON 65 ECC RM 2             67.464 METERS 15456     |
 JV4168| JV4169 BOUNDARY MON 65 MD PA                 9.725 METERS 32932     |
 JV4168|---------------------------------------------------------------------|
 JV4168
 JV4168                          SUPERSEDED SURVEY CONTROL
 JV4168
 JV4168  NAD 83(1986)-  39 43 11.94102(N)    077 00 48.97975(W) AD(       ) 1
 JV4168  NAD 27      -  39 43 11.57700(N)    077 00 50.04400(W) AD(       ) 1
 JV4168
 JV4168.Superseded values are not recommended for survey control.
 JV4168
 JV4168.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4168.See file dsdata.pdf to determine how the superseded data were derived.
 JV4168
 JV4168_MARKER: DS = TRIANGULATION STATION DISK
 JV4168_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4168_STAMPING: BOUNDARY MON ECC NO 65 1939
 JV4168_MARK LOGO: CGS
 JV4168_PROJECTION: RECESSED 36 CENTIMETERS
 JV4168_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4168+STABILITY: SURFACE MOTION
 JV4168_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4168+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2018
 JV4168
 JV4168  HISTORY     - Date     Condition        Report By
 JV4168  HISTORY     - 1939     MONUMENTED       CGS
 JV4168  HISTORY     - 20180329 GOOD             INDIV
 JV4168
 JV4168                          STATION DESCRIPTION
 JV4168
 JV4168'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4168'THE STATION MARK IS SET ABOUT 14 INCHES BELOW THE SURFACE OF THE
 JV4168'GROUND.  IT IS 31.91 FEET S OF THE BOUNDARY MONUMENT NO.65,
 JV4168'34 FEET S OF THE CENTER OF A DIRT ROAD, 20 FEET S OF THE NW
 JV4168'CORNER OF A FIELD AND 10 FEET E OF EDGE OF WOODS.
 JV4168'
 JV4168'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV4168'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1B, 7A, AND 11A.
 JV4168'
 JV4168'REFERENCE MARK NO.1 IS E OF THE STATION AND PROJECTS ABOUT 6
 JV4168'INCHES.  IT IS 5 FEET W OF A 36-INCH CHERRY TREE AND 14.6 FEET S
 JV4168'OF THE CENTER OF A DIRT ROAD.
 JV4168'
 JV4168'REFERENCE MARK NO.2 IS S OF THE STATION AND PROJECTS ABOUT 10
 JV4168'INCHES.  IT IS 13.6 FEET N OF THE CENTER OF A DIRT ROAD AND 7.8
 JV4168'FEET NW OF THE N END OF A WOOD CULVERT.
 JV4168'
 JV4168'AZIMUTH MARK IS LOCATED ABOUT 0.75 MILE N OF THE STATION ON
 JV4168'THE N SIDE OF A GARAGE ON LAND OWNED BY MR. M.S.E. GOBRECHT.  MARK
 JV4168'PROJECTS ABOUT 2 INCHES.  IT IS 1.5 FEET W OF THE NW CORNER OF
 JV4168'THE GARAGE, 10 FEET SE OF THE CENTER OF A FARM ROAD, 30 FEET E
 JV4168'OF 2 LARGE CHERRY TREES, AND 100 FEET W OF THE NW CORNER OF A
 JV4168'YELLOW HOUSE OWNED BY MR. GOBRECHT.
 JV4168'
 JV4168'BOUNDARY MONUMENT NO.65 IS N OF THE STATION.  THE MONUMENT IS
 JV4168'IN POOR CONDITION AND IS BADLY DEFACED.  THERE ARE NO LEGIBLE
 JV4168'MARKINGS.  MARK IS 9 FEET S OF THE CENTER OF A DIRT ROAD.
 JV4168'
 JV4168'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 140 AND
 JV4168'STATE HIGHWAYS 32 AND 31 IN WESTMINSTER GO N ON U.S. HIGHWAY
 JV4168'140 FOR 8.5 MILES TO SILVER RUN STORE, THEN CONTINUE N ON
 JV4168'U.S. HIGHWAY 140 FOR 1.75 MILES TO A PAVED ROAD E, THEN LEAVE
 JV4168'U.S. HIGHWAY 140, TURN RIGHT AND GO E ON PAVED ROAD FOR 0.5 MILE
 JV4168'TO END OF PAVEMENT, THEN CONTINUE EASTERLY ON MAIN DIRT ROAD FOR
 JV4168'2.35 MILES TO A REVERSE Y ON TOP OF HILL AT STATE LINE, THEN
 JV4168'MAKE SHARP TURN LEFT AND GO W DOWN HILL 0.05 MILE TO A
 JV4168'MONUMENT ON LEFT EDGE OF ROAD AT CORNER OF WOODS.  STATION IS
 JV4168'31.91 FEET S OF THIS MONUMENT.
 JV4168'
 JV4168'TO REACH THE AZIMUTH MARK FROM THE STATION, GO E ON A DIRT
 JV4168'ROAD FOR 0.5 MILE, HERE TURN LEFT AND GO N FOR 0.55 MILE, TURN
 JV4168'LEFT (W) AND GO 0.1 MILE TO AZIMUTH ON THE LEFT.
 JV4168'
 JV4168'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4168
 JV4168                          STATION RECOVERY (2018)
 JV4168
 JV4168'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2018 (MRK)
 JV4168'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4169 ***********************************************************************
 JV4169  DESIGNATION -  BOUNDARY MON 65 MD PA
 JV4169  PID         -  JV4169
 JV4169  STATE/COUNTY-  MD/CARROLL
 JV4169  COUNTRY     -  US
 JV4169  USGS QUAD   -  LITTLESTOWN (2019)
 JV4169
 JV4169                         *CURRENT SURVEY CONTROL
 JV4169  ______________________________________________________________________
 JV4169* NAD 83(1991) POSITION- 39 43 12.21487(N) 077 00 49.18521(W)   ADJUSTED
 JV4169* NAVD 88 ORTHO HEIGHT -   248.80  (+/-2cm)      816.3   (feet) VERTCON3
 JV4169  ______________________________________________________________________
 JV4169  GEOID HEIGHT    -        -32.807 (meters)                     GEOID18
 JV4169  LAPLACE CORR    -          4.89  (seconds)                    DEFLEC18
 JV4169  HORZ ORDER      -  SECOND
 JV4169  VERT ORDER      -  THIRD ? (See Below)
 JV4169
 JV4169.The horizontal coordinates were established by classical geodetic methods
 JV4169.and adjusted by the National Geodetic Survey in January 1992.
 JV4169
 JV4169.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4169.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4169
 JV4169.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4169.GEOID18 height accuracy estimate available here.
 JV4169
 JV4169.The vertical order pertains to the NGVD 29 superseded value.
 JV4169
 JV4169.Click photographs - Photos may exist for this station.
 JV4169
 JV4169.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4169
 JV4169. The following values were computed from the NAD 83(1991) position.
 JV4169
 JV4169;                    North         East     Units Scale Factor Converg.
 JV4169;SPC MD       -   227,948.392   398,828.483   MT  1.00005841   -0 00 30.9
 JV4169;SPC MD       -   747,860.68  1,308,489.78   sFT  1.00005841   -0 00 30.9
 JV4169;SPC PA S     -    43,203.601   663,136.516   MT  1.00004019   +0 28 39.8
 JV4169;SPC PA S     -   141,743.81  2,175,640.39   sFT  1.00004019   +0 28 39.8
 JV4169;UTM  18      - 4,398,625.895   327,407.933   MT  0.99996674   -1 17 13.6
 JV4169
 JV4169!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4169!SPC MD       -   0.99996612  x   1.00005841  =   1.00002452
 JV4169!SPC PA S     -   0.99996612  x   1.00004019  =   1.00000630
 JV4169!UTM  18      -   0.99996612  x   0.99996674  =   0.99993286
 JV4169
 JV4169_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2740798625(NAD 83)
 JV4169
 JV4169                          SUPERSEDED SURVEY CONTROL
 JV4169
 JV4169  NAD 83(1986)-  39 43 12.21280(N)    077 00 49.18680(W) AD(       ) 2
 JV4169  NAD 27      -  39 43 11.84900(N)    077 00 50.25100(W) AD(       ) 2
 JV4169  NGVD 29             249.00   (m)          816.9    (f) LEVELING    3  
 JV4169
 JV4169.Superseded values are not recommended for survey control.
 JV4169
 JV4169.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4169.See file dsdata.pdf to determine how the superseded data were derived.
 JV4169
 JV4169_MARKER: 71 = BOUNDARY MONUMENT
 JV4169
 JV4169  HISTORY     - Date     Condition        Report By
 JV4169  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4169
 JV4169                          STATION DESCRIPTION
 JV4169
 JV4169'DESCRIBED BY COAST AND GEODETIC SURVEY 1939
 JV4169'BOUNDARY MONUMENT NO. 65 IS NORTH OF THE STATION.  THE MONUMENT IS
 JV4169'IN POOR CONDITION AND IS BADLY DEFACED.  THERE ARE NO LEGIBLE
 JV4169'MARKINGS.  MARK IS 9 FEET S OF THE CENTER OF A DIRT ROAD.
 JV4169'
 JV4169'TO REACH BDRY MON 65 ECC FROM THE JUNCTION OF U.S. HIGHWAY 140 AND
 JV4169'STATE HIGHWAYS 32 AND 31 IN WESTMINSTER, GO NORTH ON U.S. HIGHWAY
 JV4169'140 FOR 8.5 MILES TO SILVER RUN STORE, THEN CONTINUE NORTH ON
 JV4169'U.S. HIGHWAY 140 FOR 1.75 MILES TO A PAVED ROAD EAST, THEN LEAVE
 JV4169'U.S. HIGHWAY 140, TURN RIGHT AND GO EAST ON PAVED ROAD FOR 0.5 MILE
 JV4169'TO END OF PAVEMENT, THEN CONTINUE EASTERLY ON MAIN DIRT ROAD FOR
 JV4169'2.35 MILES TO A REVERSE Y ON TOP OF HILL AT STATE LINE, THEN
 JV4169'MAKE SHARP TURN LEFT AND GO WEST DOWN HILL 0.05 MILE TO A
 JV4169'MONUMENT ON THE LEFT EDGE OF THE ROAD AT THE CORNER OF A WOODS.  BDRY
 JV4169'MON 65 ECC IS 31.91 FEET SOUTH OF THIS MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4155 ***********************************************************************
 JU4155  DESIGNATION -  BOUNDARY MON 65 RESET DEL MD
 JU4155  PID         -  JU4155
 JU4155  STATE/COUNTY-  MD/CECIL
 JU4155  COUNTRY     -  US
 JU4155  USGS QUAD   -  CECILTON (2016)
 JU4155
 JU4155                         *CURRENT SURVEY CONTROL
 JU4155  ______________________________________________________________________
 JU4155* NAD 83(1991) POSITION- 39 24 11.33068(N) 075 46 07.18184(W)   ADJUSTED
 JU4155* NAVD 88 ORTHO HEIGHT -    17.9   (meters)       59.    (feet) VERTCON3
 JU4155  ______________________________________________________________________
 JU4155  GEOID HEIGHT    -        -33.538 (meters)                     GEOID18
 JU4155  LAPLACE CORR    -         -1.20  (seconds)                    DEFLEC18
 JU4155  HORZ ORDER      -  THIRD
 JU4155
 JU4155.The horizontal coordinates were established by classical geodetic methods
 JU4155.and adjusted by the National Geodetic Survey in January 1992.
 JU4155
 JU4155.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU4155.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU4155
 JU4155.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4155.GEOID18 height accuracy estimate available here.
 JU4155
 JU4155.Click photographs - Photos may exist for this station.
 JU4155
 JU4155.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4155
 JU4155. The following values were computed from the NAD 83(1991) position.
 JU4155
 JU4155;                    North         East     Units Scale Factor Converg.
 JU4155;SPC MD       -   193,477.198   506,054.416   MT  0.99999214   +0 46 22.2
 JU4155;SPC MD       -   634,766.44  1,660,280.20   sFT  0.99999214   +0 46 22.2
 JU4155;UTM  18      - 4,361,797.640   433,819.213   MT  0.99965393   -0 29 16.6
 JU4155
 JU4155!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4155!SPC MD       -   1.00000246  x   0.99999214  =   0.99999460
 JU4155!UTM  18      -   1.00000246  x   0.99965393  =   0.99965639
 JU4155
 JU4155_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3381961797(NAD 83)
 JU4155
 JU4155                          SUPERSEDED SURVEY CONTROL
 JU4155
 JU4155  NAD 83(1986)-  39 24 11.32303(N)    075 46 07.19029(W) AD(       ) 3
 JU4155  NGVD 29 (03/25/91)   18.1    (m)           59.     (f) VERT ANG       
 JU4155
 JU4155.Superseded values are not recommended for survey control.
 JU4155
 JU4155.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4155.See file dsdata.pdf to determine how the superseded data were derived.
 JU4155
 JU4155_MARKER: X = CHISELED CROSS
 JU4155_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JU4155_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4155_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4155_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU4155+SATELLITE: SATELLITE OBSERVATIONS - June 08, 2007
 JU4155
 JU4155  HISTORY     - Date     Condition        Report By
 JU4155  HISTORY     - 1986     MONUMENTED       NGS
 JU4155  HISTORY     - 20070608 GOOD             GEOCAC
 JU4155
 JU4155                          STATION DESCRIPTION
 JU4155
 JU4155'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 JU4155'THE STATION IS LOCATED ABOUT 2.5 KM (1.55 MI) SOUTH-SOUTHEAST OF
 JU4155'WARWICK, 3.25 KM (2.00 MI) NORTH OF SASSAFRAS, 6.5 KM (4.05 MI)
 JU4155'SOUTHWEST OF MIDDLETOWN AND AT THE SOUTHEAST POINT OF A WOODED AREA.
 JU4155'
 JU4155'TO REACH FROM THE POST OFFICE AT MIDDLETOWN DELAWARE, GO WEST THEN
 JU4155'SOUTHWEST ON U.S. HIGHWAY 301 AND STATE HIGHWAY 299 (WEST MAIN STREET)
 JU4155'FOR 6.45 KM (4.00 MI) TO A SIDE ROAD LEFT. TURN LEFT AND GO EAST ON A
 JU4155'PAVED ROAD FOR 0.55 KM (0.35 MI) TO A SIDE ROAD RIGHT.  TURN RIGHT AND
 JU4155'GO SOUTH ON A FARM ROAD FOR 0.95 KM (0.60 MI) TO SEVERAL FARM
 JU4155'BUILDINGS.  TURN RIGHT AND GO WEST ON THE FARM ROAD FOR 0.15 KM
 JU4155'(0.10 MI) TO THE WEST EDGE OF THE BUILDINGS.  CONTINUE STRAIGHT AHEAD,
 JU4155'WESTERLY CROSSING A CULTIVATED FIELD FOR 0.1 KM (0.05 MI) TO A DRAIN
 JU4155'DITCH.  TURN LEFT AND GO SOUTHERLY ALONG THE WEST EDGE OF THE
 JU4155'CULTIVATED FIELD FOR 0.4 KM (0.25 MI) TO THE SOUTHWEST CORNER OF THE
 JU4155'WOODED AREA AND THE MARK ON THE RIGHT IN THE EDGE OF THE WOODS.
 JU4155'
 JU4155'THE SURFACE MARK IS THE TOP AND CENTER OF THE 0.3 M (1.0 FT) SQUARE
 JU4155'MASON-DIXON MONUMENT AND IT PROJECTS ABOUT 0.45 M (1.5 FT).  THE
 JU4155'SUB-SURFACE MARK IS A STANDARD NGS HORIZONTAL CONTROL DISK STAMPED
 JU4155'---N-S NO. 65 1986--- SET IN THE TOP OF A 0.2 M (0.7 FT) MASS OF
 JU4155'CONCRETE RECESSED 1.0 M (3.3 FT) BELOW GROUND.  THEY ARE 10.4 M
 JU4155'(34.1 FT) NORTH OF THE SOUTH SIDE OF THE WOODED AREA, 1.5 M (4.9 FT)
 JU4155'EAST OF THE EAST EDGE OF THE WOODED AREA, 4.3 M (14.1 FT) WEST OF THE
 JU4155'WEST EDGE OF THE CULEIVATED FIELD, 4.3 M (14.1 FT) NORTH-NORTHEAST OF
 JU4155'A 0.9 M (3.0 FT) MAPLE TREE AND 0.6 M (2.0 FT) SOUTH OF A CARSONITE
 JU4155'WITNESS POST.
 JU4155
 JU4155                          STATION RECOVERY (2007)
 JU4155
 JU4155'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU4155'THE STONE IS LOCATED IN HEAVY WOODS ABOUT 30 FEET WEST OF THE WEST
 JU4155'EDGE OF A CULTIVATED FIELD, FLANKED BY TWO I-BEAMS, AND TWO FEET SOUTH
 JU4155'OF AN ORANGE CARSONITE WITNESS POST.
 JU4155'
 JU4155'TO REACH FROM THE INTERSECTION OF US HIGHWAY 301 AND DELAWARE STATE
 JU4155'HIGHWAY 299 ON THE WEST END OF MIDDLETON, DE, GO SOUTHWESTERLY ON US
 JU4155'HIGHWAY 301 FOR ABOUT 3.4 MILES TO THE INTERSECTION WITH STRAWBERRY
 JU4155'LANE.  TURN LEFT AND GO SOUTHEAST ON STRAWBERRY LANE FOR ABOUT 0.35
 JU4155'MILES TO A GRAVEL DRIVEWAY LEADING SOUTHWEST AT MAILBOX NUMBER 389.
 JU4155'TURN RIGHT AND GO SOUTHWEST ON THE GRAVEL DRIVE FOR ABOUT 0.55 MILES
 JU4155'TO A BROWN FARMHOUSE.  AT THE FARMHOUSE, TURN RIGHT AND GO NORTHWEST
 JU4155'AND NORTH ON A TRACK ROAD THROUGH A GROUP OF RED OUTBUILDINGS FOR
 JU4155'ABOUT 120 YARDS TO A DRAINAGE DITCH RUNNING SOUTHWEST.  TURN LEFT
 JU4155'BEFORE CROSSING THE DITCH AND GO SOUTHWEST ON A DIM FARM ROAD FOR
 JU4155'ABOUT 0.22 MILES TO OVERHEAD POWER LINES AND THE END OF TRUCK TRAVEL.
 JU4155'PACK SOUTHWEST AND SOUTH ALONG THE NORTHWEST EDGE OF A CULTIVATED
 JU4155'FIELD FOR ABOUT 250 YARDS TO THE STONE ON THE RIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3505 ***********************************************************************
 JU3505  DESIGNATION -  BOUNDARY MON 66 DE MD=LAWRENCE
 JU3505  PID         -  JU3505
 JU3505  STATE/COUNTY-  MD/CECIL
 JU3505  COUNTRY     -  US
 JU3505  USGS QUAD   -  CECILTON (2016)
 JU3505
 JU3505                         *CURRENT SURVEY CONTROL
 JU3505  ______________________________________________________________________
 JU3505* NAD 83(1991) POSITION- 39 25 02.56536(N) 075 46 11.25986(W)   ADJUSTED
 JU3505* NAVD 88 ORTHO HEIGHT -    22.2   (meters)       73.    (feet) VERTCON3
 JU3505  ______________________________________________________________________
 JU3505  GEOID HEIGHT    -        -33.521 (meters)                     GEOID18
 JU3505  LAPLACE CORR    -         -1.09  (seconds)                    DEFLEC18
 JU3505  HORZ ORDER      -  SECOND
 JU3505
 JU3505.The horizontal coordinates were established by classical geodetic methods
 JU3505.and adjusted by the National Geodetic Survey in January 1992.
 JU3505
 JU3505.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3505.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3505
 JU3505.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3505.GEOID18 height accuracy estimate available here.
 JU3505
 JU3505.Click photographs - Photos may exist for this station.
 JU3505
 JU3505.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3505
 JU3505. The following values were computed from the NAD 83(1991) position.
 JU3505
 JU3505;                    North         East     Units Scale Factor Converg.
 JU3505;SPC MD       -   195,055.796   505,935.563   MT  0.99999446   +0 46 19.6
 JU3505;SPC MD       -   639,945.56  1,659,890.26   sFT  0.99999446   +0 46 19.6
 JU3505;UTM  18      - 4,363,377.935   433,735.154   MT  0.99965406   -0 29 19.7
 JU3505
 JU3505!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3505!SPC MD       -   1.00000178  x   0.99999446  =   0.99999624
 JU3505!UTM  18      -   1.00000178  x   0.99965406  =   0.99965584
 JU3505
 JU3505:                Primary Azimuth Mark                     Grid Az
 JU3505:SPC MD       -  LAWRENCE AZ MK                           270 17 19.3
 JU3505:UTM  18      -  LAWRENCE AZ MK                           271 32 58.6
 JU3505
 JU3505_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3373563377(NAD 83)
 JU3505
 JU3505|---------------------------------------------------------------------|
 JU3505| PID    Reference Object                     Distance      Geod. Az  |
 JU3505|                                                           dddmmss.s |
 JU3505| JU3837 WASHINGTON NY AWY BCN 64            APPROX.24.6 KM 0032656.1 |
 JU3505| JU3440 MIDDLETOWN MUNICIPAL TANK           APPROX. 5.6 KM 0514019.2 |
 JU3505| CB2159 LAWRENCE RM 1                        34.465 METERS 17451     |
 JU3505| CB2160 LAWRENCE RM 2                        61.274 METERS 21706     |
 JU3505| CB2158 LAWRENCE AZ MK                                     2710338.9 |
 JU3505| CB2161 LAWRENCE RM 3 AZIMUTH                              3143444.0 |
 JU3505|---------------------------------------------------------------------|
 JU3505
 JU3505                          SUPERSEDED SURVEY CONTROL
 JU3505
 JU3505  NAD 83(1986)-  39 25 02.55782(N)    075 46 11.26819(W) AD(       ) 2
 JU3505  NAD 27      -  39 25 02.15620(N)    075 46 12.50650(W) AD(       ) 2
 JU3505  NGVD 29 (07/19/86)   22.4    (m)           73.     (f) VERT ANG       
 JU3505
 JU3505.Superseded values are not recommended for survey control.
 JU3505
 JU3505.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3505.See file dsdata.pdf to determine how the superseded data were derived.
 JU3505
 JU3505_MARKER: DS = TRIANGULATION STATION DISK
 JU3505_SETTING: 0 = UNSPECIFIED SETTING
 JU3505_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3505+SATELLITE: SATELLITE OBSERVATIONS - June 08, 2007
 JU3505
 JU3505  HISTORY     - Date     Condition        Report By
 JU3505  HISTORY     - 1934     MONUMENTED       CGS
 JU3505  HISTORY     - 1943     GOOD             CGS
 JU3505  HISTORY     - 1961     GOOD             CGS
 JU3505  HISTORY     - 1961     GOOD             CGS
 JU3505  HISTORY     - 20070608 GOOD             GEOCAC
 JU3505
 JU3505                          STATION DESCRIPTION
 JU3505
 JU3505'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 JU3505'THIS IS A SECOND-ORDER STATION LOCATED 8 MILES SE OF CHESAPEAKE
 JU3505'CITY, MARYLAND, 0.25 MILE E OF WARWICK, ON THE PROPERTY OF
 JU3505'MR. LAWRENCE.  STATION IS LOCATED IN THE TOP OF A STATE BOUNDARY
 JU3505'MONUMENT, 125 YARDS NE OF THE DIRT ROAD LEADING E FROM WARWICK,
 JU3505'33 FEET S OF THE FENCE CORNER AND 1 FOOT E OF THE FENCE THAT
 JU3505'PARALLELS THE STATE LINE.  THE MONUMENT IS 1 FOOT SQUARE AND
 JU3505'PROJECTS 2.5 FEET ABOVE THE GROUND.
 JU3505'
 JU3505'UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE DISKS
 JU3505'SET IN CONCRETE.
 JU3505'
 JU3505'REFERENCE MARK NO.1 IS LOCATED 113.08 FEET S OF THE STATION,
 JU3505'1 FOOT E OF THE BOUNDARY FENCE.  MARK PROJECTS 3 INCHES.
 JU3505'
 JU3505'REFERENCE MARK NO.2 IS LOCATED 201.00 FEET E OF THE STATION
 JU3505'1 FOOT N OF THE GARDEN FENCE CORNER AND 1 FOOT E OF THE FENCE,
 JU3505'50 PACES N OF THE ROAD.  MARK PROJECTS 4 INCHES.
 JU3505'
 JU3505'AZIMUTH MARK IS LOCATED 0.25 MILE W OF THE STATION, 8 PACES
 JU3505'E OF THE CENTER LINE OF THE PAVED ROAD, 20 PACES S OF A POWER
 JU3505'LINE POLE, 8 PACES S OF THE PASTURE FENCE.  PROJECTS 4 INCHES.
 JU3505'
 JU3505'A 64-FOOT TOWER WILL CLEAR ALL LINES.  NO CUT-INS VISIBLE FROM
 JU3505'THE GROUND.
 JU3505'
 JU3505'TO REACH THE STATION FROM WARWICK, MARYLAND, LEAVE THE PAVED
 JU3505'ROAD AT THE N EDGE OF THE VILLAGE AT R.D. AIKENS STORE AND FILLING
 JU3505'STATION.  TURN RIGHT ON DIRT ROAD AND GO 0.25 MILE TO A SMALL
 JU3505'WHITE HOUSE ON THE N SIDE OF THE ROAD.  TURN LEFT JUST E OF
 JU3505'HOUSE AND GO 125 YARDS TO THE FENCE AND THE STATION, ON THE
 JU3505'STATE BOUNDARY LINE.  THIS IS A SECOND-ORDER STATION.
 JU3505'
 JU3505'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JU3505
 JU3505                          STATION RECOVERY (1943)
 JU3505
 JU3505'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 JU3505'RECOVERED AS DESCRIBED BY J.B., JR., IN 1934 EXCEPT THAT
 JU3505'REFERENCE MARK 2 IS SW OF THE STATION, 1 FOOT S OF GARDEN FENCE
 JU3505'CORNER, 1 FOOT W OF FENCE, AND 50 PACES NE OF THE ROAD.
 JU3505
 JU3505                          STATION RECOVERY (1961)
 JU3505
 JU3505'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3505'THE STATION MARK, REFERENCE MARKS 1 AND 2 AND THE AZIMUTH MARK
 JU3505'(REFERENCE MARK 3) WERE RECOVERED AS DESCRIBED AND FOUND IN
 JU3505'GOOD CONDITION.  THE DISTANCE TO REFERENCE MARKS 1 AND 2 CHECKED
 JU3505'WITH THE PREVIOUS DATA.  THE DIRECTION TO REFERENCE MARK 2
 JU3505'CHECKED WITH THE PREVIOUS DATA.  A DIFFERENCE OF 1 MINUTE AND
 JU3505'45.7 SECONDS WAS NOTED TO REFERENCE MARK 1 WAS NOTED ON THIS
 JU3505'DATE.  THE AZIMUTH MARK (REFERENCE MARK 3) BEING OBSTRUCTED BY
 JU3505'A BUILDING WAS NO MORE USEABLE.  THE MARK WAS DESTROYED ON
 JU3505'THIS DATE AND A NEW AZIMUTH MARK WAS ESTABLISHED.
 JU3505'
 JU3505'TO REACH THE AZMIMUTH MARK FROM THE STATION.  GO SOUTH ON THE
 JU3505'TRACK TIMBER ROAD FOR 0.15 MILE TO THE BLACKTOP ROAD.  TURN RIGHT
 JU3505'AND GO WEST ON THE BLACKTOP ROAD FOR 0.14 MILE TO A 36-INCH
 JU3505'MAPLE TREE, A STANDARD METAL WITNESS POST AND MARKER AND THE
 JU3505'MARK ON THE LEFT SOUTHWEST SIDE OF THE BLACKTOP ROAD.
 JU3505'
 JU3505'THE AZIMIUTH MARK, A STANDARD DISK STAMPED LAWRENCE 1934, IS
 JU3505'SET IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT FLUSH WITH
 JU3505'THE SURFACE OF THE GROUND.  IT IS 14.9 FEET SOUTHWEST OF THE
 JU3505'CENTERLINE OF A BLACKTOP ROAD, 10.6 FEET SOUTHEAST OF A 36-INCH
 JU3505'MAPLE TREE AND 1.6 FEET NORTHEAST OF A STANDARD METAL WITNESS
 JU3505'POST AND MARKER.
 JU3505
 JU3505                          STATION RECOVERY (1961)
 JU3505
 JU3505'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3505'THE STATION IS LOCATED ABOUT 8.0 MILES SOUTHEAST OF CHESAPEAKE
 JU3505'CITY, MARYLAND AND 0.25 MILE EAST OF WARWICK, MARYLAND AND ON
 JU3505'PROPERTY OWNED BY MR. LAWRENCE.  IT IS ABOUT 125 YARDS NORTHEAST
 JU3505'OF A BLACKTOP ROAD, 33.0 FEET SOUTH OF A FENCE CORNER AND 1.0
 JU3505'FOOT EAST OF A FENCE LINE THAT PARALLELS THE STATE LINE.
 JU3505'
 JU3505'THE STONE IS IN AN UPRIGHT POSITION AND IN GOOD
 JU3505'CONDITION.  TRIANGULATION DISC OF THE U.S. COAST AND GEODETIC
 JU3505'SURVEY IS IN THE TOP AND CENTER OF THE STONE.  MARKED WITH M
 JU3505'AND P.  THE STEM OF THE P IS BROKEN PERHAPS IN AN ATTEMPT TO
 JU3505'CONVERT P TO D.  IT IS A 12 X 12 INCH STONE PROJECTING ABOUT
 JU3505'3 INCHES ABOVE THE SURFACE OF THE GROUND.
 JU3505
 JU3505                          STATION RECOVERY (2007)
 JU3505
 JU3505'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3505'FOUND THE STATION AND REFERENCE MARK NO. 1 IN GOOD CONDITION.  DID NOT
 JU3505'FIND REFERENCE MARK NO. 2 OR THE AZIMUTH MARK.  TO REACH FROM THE
 JU3505'INTERSECTION OF US HIGHWAY 301 AND DELAWARE STATE HIGHWAY 299 ON THE
 JU3505'WEST EDGE OF MIDDLETON, DE, GO SOUTHWESTERLY ON US HIGHWAY 391 FOR
 JU3505'ABOUT 3.4 MILES TO THE INTERSECTION WITH STRAWBERRY LANE.  TURN RIGHT
 JU3505'AND GO NORTHWEST ON STRAWBERRY LANE FOR ABOUT 0.2 MILES TO HOUSE
 JU3505'NUMBER 124 ON THE RIGHT.  FROM THE WEST SIDE OF THE HOUSE, PACK NORTH
 JU3505'FOR ABOUT 150 FEET TO REFERENCE MARK N0. 1.  CONTINUE NORTH FOR ABOUT
 JU3505'113 FEET TO THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4145 ***********************************************************************
 JU4145  HT_MOD      -  This is a Height Modernization Survey Station.
 JU4145  DESIGNATION -  BOUNDARY MON 71 DEL MD RESET
 JU4145  PID         -  JU4145
 JU4145  STATE/COUNTY-  MD/CECIL
 JU4145  COUNTRY     -  US
 JU4145  USGS QUAD   -  CECILTON (2016)
 JU4145
 JU4145                         *CURRENT SURVEY CONTROL
 JU4145  ______________________________________________________________________
 JU4145* NAD 83(2011) POSITION- 39 29 39.58384(N) 075 46 33.71304(W)   ADJUSTED
 JU4145* NAD 83(2011) ELLIP HT-   -11.263 (meters)        (06/27/12)   ADJUSTED
 JU4145* NAD 83(2011) EPOCH   -  2010.00
 JU4145* NAVD 88 ORTHO HEIGHT -    22.14  (meters)       72.6   (feet) GPS OBS
 JU4145  ______________________________________________________________________
 JU4145  NAVD 88 orthometric height was determined with geoid model    GEOID03
 JU4145  GEOID HEIGHT    -        -33.380 (meters)                     GEOID03
 JU4145  GEOID HEIGHT    -        -33.410 (meters)                     GEOID18
 JU4145  NAD 83(2011) X  -  1,211,020.095 (meters)                     COMP
 JU4145  NAD 83(2011) Y  - -4,777,499.911 (meters)                     COMP
 JU4145  NAD 83(2011) Z  -  4,034,810.491 (meters)                     COMP
 JU4145  LAPLACE CORR    -         -0.92  (seconds)                    DEFLEC18
 JU4145
 JU4145  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4145  Standards:
 JU4145         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4145            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4145  -------------------------------------------------------------------
 JU4145  NETWORK    0.50   1.23           0.21   0.20   0.63      0.05679499
 JU4145  -------------------------------------------------------------------
 JU4145  Click here for local accuracies and other accuracy information.
 JU4145
 JU4145.The horizontal coordinates were established by GPS observations
 JU4145.and adjusted by the National Geodetic Survey in June 2012.
 JU4145
 JU4145.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4145.been affixed to the stable North American tectonic plate. See 
 JU4145.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4145
 JU4145.The horizontal coordinates are valid at the epoch date displayed above
 JU4145.which is a decimal equivalence of Year/Month/Day.
 JU4145
 JU4145.The orthometric height was determined by GPS observations and a
 JU4145.high-resolution geoid model using precise GPS observation and
 JU4145.processing techniques.
 JU4145
 JU4145.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4145.GEOID18 height accuracy estimate available here.
 JU4145
 JU4145.Click photographs - Photos may exist for this station.
 JU4145
 JU4145.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4145
 JU4145.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4145
 JU4145.The ellipsoidal height was determined by GPS observations
 JU4145.and is referenced to NAD 83.
 JU4145
 JU4145. The following values were computed from the NAD 83(2011) position.
 JU4145
 JU4145;                    North         East     Units Scale Factor Converg.
 JU4145;SPC MD       -   203,591.083   505,283.973   MT  1.00000806   +0 46 05.5
 JU4145;SPC MD       -   667,948.41  1,657,752.50   sFT  1.00000806   +0 46 05.5
 JU4145;UTM  18      - 4,371,922.535   433,271.769   MT  0.99965482   -0 29 36.9
 JU4145
 JU4145!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4145!SPC MD       -   1.00000177  x   1.00000806  =   1.00000983
 JU4145!UTM  18      -   1.00000177  x   0.99965482  =   0.99965659
 JU4145
 JU4145_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3327171922(NAD 83)
 JU4145
 JU4145                          SUPERSEDED SURVEY CONTROL
 JU4145
 JU4145  NAD 83(2007)-  39 29 39.58391(N)    075 46 33.71363(W) AD(2002.00) 1
 JU4145  ELLIP H (02/23/12)  -11.222  (m)                       GP(2002.00) 4 1
 JU4145  NAD 83(1991)-  39 29 39.58185(N)    075 46 33.71793(W) AD(       ) 3
 JU4145  NAD 83(1986)-  39 29 39.57480(N)    075 46 33.72551(W) AD(       ) 3
 JU4145
 JU4145.Superseded values are not recommended for survey control.
 JU4145
 JU4145.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4145.See file dsdata.pdf to determine how the superseded data were derived.
 JU4145
 JU4145_MARKER: V = STONE MONUMENT
 JU4145_SETTING: 0 = UNSPECIFIED SETTING
 JU4145_SP_SET: BURIED IN GROUND
 JU4145_MARK LOGO: NGS
 JU4145_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4145_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4145_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4145+SATELLITE: SATELLITE OBSERVATIONS - November 14, 2009
 JU4145
 JU4145  HISTORY     - Date     Condition        Report By
 JU4145  HISTORY     - 1984     MONUMENTED       NGS
 JU4145  HISTORY     - 20090309 GOOD             GWS
 JU4145  HISTORY     - 20091114 GOOD             GEOCAC
 JU4145
 JU4145                          STATION DESCRIPTION
 JU4145
 JU4145'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JU4145'THE MARKER IS LOCATED ABOUT 16.1 KM (10.00 MI) SOUTH OF ELKTON, 4.8 KM
 JU4145'(3.00 MI) SOUTHEAST OF CHESAPEAKE CITY AND 2.8 KM (1.75 MI) EAST OF
 JU4145'ST. AUGUSTINE.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JU4145'TO REACH FROM THE POST OFFICE IN CHESAPEAKE CITY WHICH IS 0.65 KM
 JU4145'(0.40 MI) SOUTH OF THE SOUTH END OF THE BRIDGE OVER THE C AND D CANAL,
 JU4145'GO SOUTHERLY ON STATE HIGHWAY 213 FOR 4.35 KM (2.70 MI) TO A
 JU4145'CROSSROADS.  TURN LEFT AND GO EAST ON STATE HIGHWAY 310 (CAYOTS CORNER
 JU4145'ROAD) FOR 3.55 KM (2.20 MI) TO A CROSSROADS.  CONTINUE EAST ON STATE
 JU4145'HIGHWAY 310 FOR 2.95 KM (1.85 MI) TO THE STATION ON THE RIGHT.
 JU4145'THE STATION SURFACE MARKER IS THE TOP AND CENTER OF THE MASON-DIXON
 JU4145'BOUNDARY MONUMENT WHICH PROJECTS ABOUT 0.5 M (1.6 FT) ABOVE THE
 JU4145'SURFACE OF THE GROUND.  THE SUB-SURFACE DISK IS ABOUT 1.22 M (4.0 FT)
 JU4145'BELOW THE SURFACE OF THE GROUND.  THEY ARE 5.33 M (17.5 FT) SOUTH OF
 JU4145'CENTER OF STATE HIGHWAY 310 (CAYOTS CORNER ROAD), 8.08 M (26.5 FT)
 JU4145'WEST-SOUTHWEST OF A SIGN WHICH STATES THAT IT IS UNLAWFUL TO PASS,
 JU4145'0.24 M (0.8 FT) SOUTH OF A WITNESS POST, 1.3 M (4.3 FT) WEST OF A
 JU4145'6-INCH STEEL I BEAM WHICH PROJECTS ABOUT 3 FEET ABOVE THE GROUND AND
 JU4145'1.07 M (3.5 FT) EAST OF ANOTHER I BEAM SIMILAR TO THE OTHER ONE.
 JU4145
 JU4145                          STATION RECOVERY (2009)
 JU4145
 JU4145'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (JMS)
 JU4145'THE MARKER IS NOW A PK NAIL SET AT THE TOP CENTER OF THE STATION
 JU4145'SURFACE MARKER, THE MASON-DIXON BOUNDARY MONUMENT PREVIOUSLY
 JU4145'DESCRIBED.  THERE WAS NO ATTEMPT TO RECOVER THE SUB-SURFACE DISK.
 JU4145
 JU4145                          STATION RECOVERY (2009)
 JU4145
 JU4145'RECOVERY NOTE BY GEOCACHING 2009
 JU4145'PUBLISHED POSITION RESOLVED TO A SQUARE CONCRETE MONUMENT WITH A
 JU4145'CENTERPUNCHED SPIKE EBEDDED AT APEX.  DID NOT ATTEMPT TO VERIFY OTHER
 JU4145'ASPECTS OF VERBAL DESCRIPTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4156 ***********************************************************************
 JU4156  DESIGNATION -  BOUNDARY MON 76 RESET DEL MD
 JU4156  PID         -  JU4156
 JU4156  STATE/COUNTY-  MD/CECIL
 JU4156  COUNTRY     -  US
 JU4156  USGS QUAD   -  ELKTON (2016)
 JU4156
 JU4156                         *CURRENT SURVEY CONTROL
 JU4156  ______________________________________________________________________
 JU4156* NAD 83(1986) POSITION- 39 33 43.     (N) 075 46 54.     (W)   SCALED
 JU4156* NAVD 88 ORTHO HEIGHT -    18.1   (meters)       59.    (feet) VERTCON3
 JU4156  ______________________________________________________________________
 JU4156  GEOID HEIGHT    -        -33.219 (meters)                     GEOID18
 JU4156
 JU4156.The horizontal coordinates were scaled from a map and have
 JU4156.an estimated accuracy of +/- 6 seconds.
 JU4156
 JU4156.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU4156.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU4156
 JU4156.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4156.GEOID18 height accuracy estimate available here.
 JU4156
 JU4156.Click photographs - Photos may exist for this station.
 JU4156
 JU4156;                    North         East    Units  Estimated Accuracy
 JU4156;SPC MD       -   211,090.      504,700.      MT  (+/- 180 meters Scaled)
 JU4156
 JU4156_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ328794(NAD 83)
 JU4156
 JU4156                          SUPERSEDED SURVEY CONTROL
 JU4156
 JU4156  NGVD 29 (03/25/91)   18.4    (m)           60.     (f) VERT ANG       
 JU4156
 JU4156.Superseded values are not recommended for survey control.
 JU4156
 JU4156.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4156.See file dsdata.pdf to determine how the superseded data were derived.
 JU4156
 JU4156_MARKER: 71 = BOUNDARY MONUMENT
 JU4156_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JU4156_SP_SET: BURIED IN GROUND
 JU4156_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU4156_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4156
 JU4156  HISTORY     - Date     Condition        Report By
 JU4156  HISTORY     - 1986     FIRST OBSERVED   NGS
 JU4156  HISTORY     - 19860411 GOOD             NGS
 JU4156
 JU4156                          STATION DESCRIPTION
 JU4156
 JU4156'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 JU4156'THE MARK IS LOCATED ABOUT 5.5 KM (3.40 MI) NORTHEAST OF NORTH
 JU4156'CHESAPEAKE CITY, 6 KM (3.75 MI) SOUTHWEST OF GLASCOW AND 6.75 KM
 JU4156'(4.20 MI) SOUTHEAST OF ELKTON.  OWNERSHIP--MR. AND MRS. A EMERLE, 50
 JU4156'WILLIAMS ROAD, ELKTON, MARYLAND.
 JU4156'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE HIGHWAY
 JU4156'213 WHICH IS IN THE SOUTH EDGE OF ELKTON, GO SOUTH ON STATE HIGHWAY
 JU4156'213 FOR 4.2 KM (2.60 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO EAST
 JU4156'ON W. WILLIAMS ROAD FOR 2.4 KM (1.50 MI) TO A SIDE ROAD RIGHT.  TURN
 JU4156'RIGHT AND GO SOUTH ON A SAND ROAD FOR 0.65 KM (0.40 MI) TO A POINT
 JU4156'WHERE THE SAND ROAD CURVES TO THE EAST AND A WOODS ROAD STRAIGHT
 JU4156'AHEAD.  KEEP STRAIGHT AHEAD AND GO SOUTH ON THE WOODS ROAD FOR 0.5 KM
 JU4156'(0.30 MI) TO THE MONUMENT ON THE LEFT.
 JU4156'THE MARK IS THE TOP AND CENTER OF THE 0.3 M (1.0 FT) SQUARE
 JU4156'MASON-DIXON MONUMENT AND IT PROJECTS ABOUT 0.6 M (2.0 FT) ABOVE THE
 JU4156'SURFACE OF THE GROUND.  IT IS 31.1 M (102.0 FT) EAST OF THE CENTER OF
 JU4156'THE WOODS ROAD, 23.8 M (78.1 FT) EAST-NORTHEAST OF A METAL WITNESS
 JU4156'POST AND 0.5 M (1.6 FT) NORTHWEST OF A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4157 ***********************************************************************
 JU4157  DESIGNATION -  BOUNDARY MON 78 RESET DEL MD
 JU4157  PID         -  JU4157
 JU4157  STATE/COUNTY-  MD/CECIL
 JU4157  COUNTRY     -  US
 JU4157  USGS QUAD   -  ELKTON (2016)
 JU4157
 JU4157                         *CURRENT SURVEY CONTROL
 JU4157  ______________________________________________________________________
 JU4157* NAD 83(1991) POSITION- 39 35 25.72556(N) 075 47 01.78148(W)   ADJUSTED
 JU4157* NAVD 88 ORTHO HEIGHT -    15.9   (meters)       52.    (feet) VERTCON3
 JU4157  ______________________________________________________________________
 JU4157  GEOID HEIGHT    -        -33.143 (meters)                     GEOID18
 JU4157  LAPLACE CORR    -          1.53  (seconds)                    DEFLEC18
 JU4157  HORZ ORDER      -  THIRD
 JU4157
 JU4157.The horizontal coordinates were established by classical geodetic methods
 JU4157.and adjusted by the National Geodetic Survey in January 1992.
 JU4157
 JU4157.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU4157.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU4157
 JU4157.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4157.GEOID18 height accuracy estimate available here.
 JU4157
 JU4157.Click photographs - Photos may exist for this station.
 JU4157
 JU4157.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4157
 JU4157. The following values were computed from the NAD 83(1991) position.
 JU4157
 JU4157;                    North         East     Units Scale Factor Converg.
 JU4157;SPC MD       -   214,256.549   504,471.128   MT  1.00002760   +0 45 47.9
 JU4157;SPC MD       -   702,940.03  1,655,085.69   sFT  1.00002760   +0 45 47.9
 JU4157;UTM  18      - 4,382,599.449   432,694.289   MT  0.99965577   -0 29 58.4
 JU4157
 JU4157!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4157!SPC MD       -   1.00000271  x   1.00002760  =   1.00003031
 JU4157!UTM  18      -   1.00000271  x   0.99965577  =   0.99965847
 JU4157
 JU4157_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3269482599(NAD 83)
 JU4157
 JU4157                          SUPERSEDED SURVEY CONTROL
 JU4157
 JU4157  NAD 83(1986)-  39 35 25.71936(N)    075 47 01.78852(W) AD(       ) 3
 JU4157  NGVD 29 (03/25/91)   16.1    (m)           53.     (f) VERT ANG       
 JU4157
 JU4157.Superseded values are not recommended for survey control.
 JU4157
 JU4157.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4157.See file dsdata.pdf to determine how the superseded data were derived.
 JU4157
 JU4157
 JU4157  HISTORY     - Date     Condition        Report By
 JU4157  HISTORY     - 19860408 MONUMENTED       NGS
 JU4157  HISTORY     - 20070406 GOOD             GEOCAC
 JU4157
 JU4157                          STATION DESCRIPTION
 JU4157
 JU4157'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 JU4157'THE STATION IS LOCATED ABOUT 4 KM (2.5 MI) SOUTHEAST OF
 JU4157'GLASGOW, DELAWARE, 3.0 MILES SOUTHEAST OF ELKTON, MARYLAND AND
 JU4157'IN A WOODED FENCE LINE ON THE NORTH EDGE OF A PAVED ROAD.
 JU4157'
 JU4157'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 40
 JU4157'AND 213 ABOUT 1/2 MILE SOUTH OF THE BUSINESS DISTRICT OF
 JU4157'ELKTON, MARYLAND.  GO SOUTH ON U.S. HIGHWAY 213 FOR 1.3 MILES
 JU4157'TO A SIDE ROAD LEFT. TURN LEFT AND GO EAST ON A BLACKTOP ROAD
 JU4157'FOR 3.55 KM (2.2 MI) TO THE MARK ON THE LEFT.
 JU4157'
 JU4157'THE SURFACE MARK IS THE TOP AND CENTER OF THE OLD MASON-DIXON
 JU4157'MONUMENT AND IT PROJECTS 0.6 METERS (2 FT) ABOVE THE SURFACE
 JU4157'OF THE GROUND.  THE SUB-SURFACE MARK IS A STANDARD NGS STATION
 JU4157'DISK STAMPED--N-S NO.78 1986--, SET INTO THE TOP OF A 6 INCH
 JU4157'MASS OF CONCRETE, 1 METER (3 FT) BELOW THE SURFACE OF THE
 JU4157'GROUND.  LOCATED 5.7 METERS (18.6 FT) NORTH FROM THE CENTER OF
 JU4157'FRENCHTOWN ROAD, 52.1 METERS (171 FT) EAST FROM A FIELD ROAD,
 JU4157'0.3 METER (1 FT) NORTH FROM A WITNESS POST, 24.6 METERS
 JU4157'(80.6 FT) NORTHWEST FROM THE NORTHWEST CORNER OF A CHAIN LINK
 JU4157'FRNCE AND 51.0 METERS (167.5 FT) NORTHWEST FROM THE NORTHWEST
 JU4157'CORNER OF A HOUSE AT 3121 FRENCHTOWN ROAD.
 JU4157'
 JU4157'FOR ADDITIONAL INFORMATION SEE THE DESCRIPTION FOR STATION
 JU4157'LAGANO 1961.
 JU4157
 JU4157                          STATION RECOVERY (2007)
 JU4157
 JU4157'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU4157'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4179 ***********************************************************************
 JV4179  DESIGNATION -  BOUNDARY MON 79 MD PA
 JV4179  PID         -  JV4179
 JV4179  STATE/COUNTY-  MD/FREDERICK
 JV4179  COUNTRY     -  US
 JV4179  USGS QUAD   -  EMMITSBURG (2016)
 JV4179
 JV4179                         *CURRENT SURVEY CONTROL
 JV4179  ______________________________________________________________________
 JV4179* NAD 83(1991) POSITION- 39 43 11.59281(N) 077 16 38.13318(W)   ADJUSTED
 JV4179* NAVD 88 ORTHO HEIGHT -   153.    (meters)      502.    (feet) SCALED
 JV4179  ______________________________________________________________________
 JV4179  GEOID HEIGHT    -        -33.343 (meters)                     GEOID18
 JV4179  LAPLACE CORR    -          2.09  (seconds)                    DEFLEC18
 JV4179  HORZ ORDER      -  FIRST
 JV4179
 JV4179.The horizontal coordinates were established by classical geodetic methods
 JV4179.and adjusted by the National Geodetic Survey in January 1992.
 JV4179
 JV4179.The orthometric height was scaled from a topographic map.
 JV4179
 JV4179.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4179.GEOID18 height accuracy estimate available here.
 JV4179
 JV4179.Click photographs - Photos may exist for this station.
 JV4179
 JV4179.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4179
 JV4179. The following values were computed from the NAD 83(1991) position.
 JV4179
 JV4179;                    North         East     Units Scale Factor Converg.
 JV4179;SPC MD       -   227,965.221   376,225.956   MT  1.00005837   -0 10 26.5
 JV4179;SPC MD       -   747,915.90  1,234,334.66   sFT  1.00005837   -0 10 26.5
 JV4179;SPC PA S     -    43,029.693   640,535.064   MT  1.00004023   +0 18 24.2
 JV4179;SPC PA S     -   141,173.25  2,101,488.79   sFT  1.00004023   +0 18 24.2
 JV4179;UTM  18      - 4,399,147.647   304,812.362   MT  1.00006906   -1 27 20.5
 JV4179
 JV4179!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4179!SPC MD       -   0.99998126  x   1.00005837  =   1.00003963
 JV4179!SPC PA S     -   0.99998126  x   1.00004023  =   1.00002149
 JV4179!UTM  18      -   0.99998126  x   1.00006906  =   1.00005032
 JV4179
 JV4179:                Primary Azimuth Mark                     Grid Az
 JV4179:SPC MD       -  BOUNDARY MON 79 AZ MK                    233 54 59.7
 JV4179:SPC PA S     -  BOUNDARY MON 79 AZ MK                    233 26 09.0
 JV4179:UTM  18      -  BOUNDARY MON 79 AZ MK                    235 11 53.7
 JV4179
 JV4179_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0481299147(NAD 83)
 JV4179
 JV4179|---------------------------------------------------------------------|
 JV4179| PID    Reference Object                     Distance      Geod. Az  |
 JV4179|                                                           dddmmss.s |
 JV4179| JV4157 BIG ROUND TOP LOOKOUT TOWER         APPROX. 8.1 KM 0235234.5 |
 JV4179| CJ8172 BOUNDARY MON 79 RM 1                 31.507 METERS 13155     |
 JV4179| CJ8173 BOUNDARY MON 79 RM 2                 24.588 METERS 22307     |
 JV4179| CJ8171 BOUNDARY MON 79 AZ MK                              2334433.2 |
 JV4179|---------------------------------------------------------------------|
 JV4179
 JV4179                          SUPERSEDED SURVEY CONTROL
 JV4179
 JV4179  NAD 83(1986)-  39 43 11.59408(N)    077 16 38.13673(W) AD(       ) 1
 JV4179  NAD 27      -  39 43 11.24500(N)    077 16 39.18700(W) AD(       ) 1
 JV4179
 JV4179.Superseded values are not recommended for survey control.
 JV4179
 JV4179.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4179.See file dsdata.pdf to determine how the superseded data were derived.
 JV4179
 JV4179_MARKER: DS = TRIANGULATION STATION DISK
 JV4179_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4179_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4179+SATELLITE: SATELLITE OBSERVATIONS - April 19, 2007
 JV4179
 JV4179  HISTORY     - Date     Condition        Report By
 JV4179  HISTORY     - 1939     MONUMENTED       CGS
 JV4179  HISTORY     - 20070419 GOOD             GEOCAC
 JV4179
 JV4179                          STATION DESCRIPTION
 JV4179
 JV4179'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4179'THE STATION IS LOCATED ABOUT 3.0 MILES NE OF EMMITSBURG ON LOW
 JV4179'LAND NEAR THE NW CORNER OF A CLEARED PASTURE, OWNED BY MR. ROBERT
 JV4179'MC NAIR.
 JV4179'
 JV4179'THE DISK IS SET IN A DRILL HOLE IN THE TOP OF THE
 JV4179'BOUNDARY MONUMENT 79 MD PA     LINE MONUMENT NO.79 WHICH IS A
 JV4179'10- BY 10- INCH BLOCK PROJECTING 16 INCHES AND HAS THE LETTER P
 JV4179'ON THE N SIDE AND THE LETTER M ON THE S SIDE, IT IS 7.5 FEET SE OF
 JV4179'AN ENE-WSW FENCE LINE ALONG EDGE OF WOODS, 0.05 MILE SSW OF THE
 JV4179'NW CORNER OF FIELD AND 104 FEET SSW OF A GATE IN FENCE LINE.
 JV4179'
 JV4179'STATION MARK IS A STANDARD BRONZE DISK SET IN CONCRETE, AS
 JV4179'DESCRIBED IN NOTE 1A.
 JV4179'
 JV4179'REFERENCE MARK NO.1 AND AZIMUTH MARK ARE STANDARD BRONZE DISKS
 JV4179'IN A BOULDER, AS DESCRIBED IN NOTES 12C.
 JV4179'
 JV4179'REFERENCE MARK NO.2 IS A STANDARD BRONZE DISK IN OUTCROPPING
 JV4179'BEDROCK, AS DESCRIBED IN NOTE 12A.
 JV4179'
 JV4179'REFERENCE MARK NO.1 IS NE OF STATION.  MARK IS SET IN A DRILL
 JV4179'HOLE IN A LARGE BOULDER 3-FEET BY 4-FEET PROJECTING 3 FEET.  ONE
 JV4179'HUNDRED AND FOUR FEET SE OF A GATE IN A FENCE LINE AT EDGE OF
 JV4179'WOODS.
 JV4179'
 JV4179'REFERENCE MARK NO.2 IS SE OF STATION, MARK SET IN A DRILL HOLE
 JV4179'IN A LARGE ROCK OUTCROP, 10 FEET BY 12 FEET AND PROJECTS 4 FEET,
 JV4179'55 FEET SSE OF FENCE LINE AT EDGE OF WOODS.
 JV4179'
 JV4179'AZIMUTH MARK IS APPROXIMATELY 0.4 MILE SSW OF STATION.  MARK
 JV4179'IS SET IN A DRILL HOLE IN A LARGE BOULDER 10 FEET BY 8 FEET AND
 JV4179'PROJECTS 3 FEET, 80 FEET S OF AN 8-INCH CEDAR TREE WITH A TRIANGLE
 JV4179'BLAZE AND 0.2 MILE W OF AN OLD LOG HOUSE.
 JV4179'
 JV4179'TO REACH FROM THE STATION GO TO OLD LOG HOUSE AND FOLLOW OLD
 JV4179'FARM ROAD TO BLAZED CEDAR TREE AND MARK.  TO REACH THE STATION
 JV4179'FROM THE JUNCTION OF U.S. HIGHWAY 15 AND STATE HIGHWAY 32 GO E ON
 JV4179'HIGHWAY 32 FOR 0.85 MILE TO A PAVED NARROW ROAD LEFT, TURN LEFT
 JV4179'AND GO 1.05 MILES TO A STEEL BRIDGE, CONTINUE ON GRAVEL AND PAVED
 JV4179'ROAD FOR 1.35 MILES TO A LARGE GATE AND A SMALL GATE ON THE
 JV4179'LEFT.  TURN LEFT THROUGH GATE AND GO 0.15 MILE TO HOUSE, TURN
 JV4179'LEFT AT HOUSE AND GO 0.15 MILE TO GATE AT WOODS, CONTINUE ON
 JV4179'ROAD AROUND LEFT BASE OF HILL FOR 0.25 MILE TO AN OLD LOG HOUSE,
 JV4179'THEN TURN RIGHT AND GO N BY W ACROSS FIELD TO WOODS AND STATION
 JV4179'NEAR A FENCE.
 JV4179'
 JV4179'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4179
 JV4179                          STATION RECOVERY (2007)
 JV4179
 JV4179'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV4179'LOCATED IN A WOODED AREA ABOUT 0.1 MILE BEHIND A PRIVATE RESIDENCE.
 JV4179'RESIDENCE IS AT 290 BULLFROG ROAD AT THE END OF A LONG GRAVEL LANE.
 JV4179'
 JV4179'STATION MARK AND MONUMENT ARE IN EXCELLENT CONDITION.  PARTS OF THE
 JV4179'FENCE LINE DESCRIBED ARE VISIBLE BUT THE POSITION OF THE GATE COULD
 JV4179'NOT BE DETERMINED.  SEVERAL LIKELY LOCATIONS FOR RM 1 AND RM 2 WERE
 JV4179'SEARCHED BUT NEITHER WAS RECOVERED.  THE AZMUTH MARK WAS NOT SEARCHED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3840 ***********************************************************************
 JU3840  DESIGNATION -  BOUNDARY MON 82 TANGENT STONE
 JU3840  PID         -  JU3840
 JU3840  STATE/COUNTY-  MD/CECIL
 JU3840  COUNTRY     -  US
 JU3840  USGS QUAD   -  NEWARK WEST (2016)
 JU3840
 JU3840                         *CURRENT SURVEY CONTROL
 JU3840  ______________________________________________________________________
 JU3840* NAD 83(1991) POSITION- 39 38 56.96122(N) 075 47 18.96136(W)   ADJUSTED
 JU3840* NAVD 88 ORTHO HEIGHT -    35.742 (meters)      117.26  (feet) ADJUSTED
 JU3840  ______________________________________________________________________
 JU3840  GEOID HEIGHT    -        -33.054 (meters)                     GEOID18
 JU3840  LAPLACE CORR    -          1.62  (seconds)                    DEFLEC18
 JU3840  HORZ ORDER      -  SECOND
 JU3840  VERT ORDER      -  SECOND    CLASS 0
 JU3840
 JU3840.The horizontal coordinates were established by classical geodetic methods
 JU3840.and adjusted by the National Geodetic Survey in January 1992.
 JU3840
 JU3840.The orthometric height was determined by differential leveling and
 JU3840.adjusted by the NATIONAL GEODETIC SURVEY
 JU3840.in June 1991.
 JU3840
 JU3840.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3840.GEOID18 height accuracy estimate available here.
 JU3840
 JU3840.Click photographs - Photos may exist for this station.
 JU3840
 JU3840.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3840
 JU3840. The following values were computed from the NAD 83(1991) position.
 JU3840
 JU3840;                    North         East     Units Scale Factor Converg.
 JU3840;SPC MD       -   220,765.451   503,974.763   MT  1.00004091   +0 45 37.1
 JU3840;SPC MD       -   724,294.65  1,653,457.20   sFT  1.00004091   +0 45 37.1
 JU3840;UTM  18      - 4,389,115.247   432,341.668   MT  0.99965636   -0 30 11.6
 JU3840
 JU3840!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3840!SPC MD       -   0.99999958  x   1.00004091  =   1.00004049
 JU3840!UTM  18      -   0.99999958  x   0.99965636  =   0.99965594
 JU3840
 JU3840_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3234189115(NAD 83)
 JU3840
 JU3840|---------------------------------------------------------------------|
 JU3840| PID    Reference Object                     Distance      Geod. Az  |
 JU3840|                                                           dddmmss.s |
 JU3840| JU1617 TANGENT RM 1                         60.782 METERS 10202     |
 JU3840| JU1616 TANGENT RM 2                         59.711 METERS 15217     |
 JU3840| JU3842 LINE RESET                          393.481 METERS 33802     |
 JU3840| JU1623 ARC RESET                           369.442 METERS 35244     |
 JU3840|---------------------------------------------------------------------|
 JU3840
 JU3840                          SUPERSEDED SURVEY CONTROL
 JU3840
 JU3840  NAD 83(1986)-  39 38 56.95529(N)    075 47 18.96786(W) AD(       ) 2
 JU3840  NAD 27      -  39 38 56.56120(N)    075 47 20.20500(W) AD(       ) 2
 JU3840  USSD        -  39 38 56.95000(N)    075 47 20.04000(W) AD(       ) 3
 JU3840  NGVD 29 (11/26/84)   36.078  (m)          118.37   (f) ADJUSTED    2 0
 JU3840
 JU3840.Superseded values are not recommended for survey control.
 JU3840
 JU3840.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3840.See file dsdata.pdf to determine how the superseded data were derived.
 JU3840
 JU3840_MARKER: V = STONE MONUMENT
 JU3840_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JU3840_SP_SET: STONE
 JU3840_STAMPING: TANGET 1849
 JU3840_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU3840_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3840_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3840+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2010
 JU3840
 JU3840  HISTORY     - Date     Condition        Report By
 JU3840  HISTORY     - 1958     MONUMENTED       CGS
 JU3840  HISTORY     - 1959     GOOD             CGS
 JU3840  HISTORY     - 1961     GOOD             CGS
 JU3840  HISTORY     - 1971     GOOD             NGS
 JU3840  HISTORY     - 1977     GOOD             NGS
 JU3840  HISTORY     - 1979     GOOD             NGS
 JU3840  HISTORY     - 19910216 GOOD             USPSQD
 JU3840  HISTORY     - 20100925 GOOD             GEOCAC
 JU3840
 JU3840                          STATION DESCRIPTION
 JU3840
 JU3840'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3840'STATION IS LOCATED ABOUT 4 MILES SOUTHWEST OF NEWARK, ABOUT 2-1/2
 JU3840'MILES NORTHEAST OF ELKTON, ABOUT 2 MILES SOUTHEAST OF ELK MILLS,
 JU3840'AND 1/4 MILE NORTHEAST OF IRON HILL RAILROAD DEPOT.  IT IS 241
 JU3840'FEET NORTHWEST OF MOST WESTERLY RAIL OF THE PENNSYLVANIA RAILROAD
 JU3840'TRACKS, 178-1/2 FEET NORTHWEST OF FENCELINE, AND BESIDE OLD
 JU3840'TANGENT STONE OF MASON-DIXON.  THE MARK IS 18 BY 11 INCHES,
 JU3840'PROJECTS 28 INCHES THE LETTERS M AND D ARE VERY LEGIBLE, ALSO
 JU3840'THE WORD TANGENT AND THE DATE 1849.  POINT INTERSECTED WAS APEX
 JU3840'OF THE LARGER GRANITE STONE.
 JU3840'
 JU3840'REFERENCE MARK NO.1 IS 1 FOOT SOUTHEAST OF FENCELINE, 13-1/2
 JU3840'FEET NORTHWEST OF CENTERLINE OF TRACK ROAD, 62-1/2 FEET NORTHWEST
 JU3840'OF THE MOST WESTERLY RAIL OF RAILROAD TRACKS OF THE PENNSYLVANIA
 JU3840'RAILROAD, AND 43-1/2 FEET EAST OF THE SOUTH END OF A CULVERT.  THE
 JU3840'MARK IS A STANDARD REFERENCE MARK DISK SET IN A 10 BY 10 INCH
 JU3840'CONCRETE MONUMENT, PROJECTS 2 INCHES AND THE DISK IS STAMPED
 JU3840'TANGENT NO 1 1958.
 JU3840'
 JU3840'REFERENCE MARK NO. 2 IS 1 FOOT SOUTHEAST OF FENCELINE, 12 FEET
 JU3840'NORTHWEST OF CENTERLINE OF TRACK ROAD, 62-1/2 FEET NORTHWEST OF
 JU3840'THE MOST WESTERLY RAIL OF PENNSYLVANIA RAILROAD TRACKS.  THE MARK
 JU3840'IS A STANDARD REFERENCE MARK DISK SET IN A 10 BY 10 INCH CONCRETE
 JU3840'MONUMENT, FLUSH WITH THE GROUND AND THE DISK IS STAMPED TANGENT
 JU3840'NO 2 1958.
 JU3840'
 JU3840'TO REACH FROM THE POST OFFICE IN ELKTON, GO EAST ON STATE
 JU3840'HIGHWAY NO. 7 FOR 0.1 MILE, TURN LEFT AND GO NORTH AND NORTHEAST
 JU3840'ON STATE HIGHWAY NO. 279 FOR 2.25 MILE TO FORKS, KEEP RIGHT
 JU3840'FORK (STATE HIGHWAY NO. 279) FOR 2 MILE TO SIDE ROAD RIGHT, TURN
 JU3840'RIGHT ON NARROW GRAVEL ROAD AND GO SOUTHEASTERLY FOR 0.3 MILE
 JU3840'TO A SIDE ROAD LEFT LEADING TO RAILROAD STATION, TURN LEFT AND
 JU3840'GO NORTHERLY FOR 0.25 MILE TO STATION ON LEFT AS DESCRIBED.
 JU3840'
 JU3840'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JU3840
 JU3840                          STATION RECOVERY (1959)
 JU3840
 JU3840'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JU3840'3.1 MI NE FROM ELKTON.
 JU3840'1.8 MILES NORTHEAST ALONG STATE HIGHWAY 279 FROM THE HIGH SCHOOL
 JU3840'AT ELKTON, THENCE 0.9 MILE EAST ALONG AN ASPHALT ROAD, THENCE
 JU3840'0.2 MILE NORTH ALONG A GRAVEL ROAD TO THE PENNSYLVANIA RAILROAD,
 JU3840'THENCE 0.2 MILE NORTHEAST ALONG THE PENNSYLVANIA RAILROAD, IN A
 JU3840'LARGE OPEN FIELD, NEAR THE DELAWARE-MARYLAND STATE LINE, ABOUT
 JU3840'0.2 MILE NORTHEAST OF THE PENNSYLVANIA RAILROAD SIGN IRON HILL,
 JU3840'240 FEET NORTHWEST OF THE NORTHWEST RAIL, 178 FEET NORTHWEST OF
 JU3840'A FENCE LINE, THE TOP OF AN 18-BY 12-INCH STONE PROJECTING 2
 JU3840'FEET ABOVE THE GROUND.  THE WORD TANGENT AND THE DATE 1849 IS
 JU3840'CHISELED ON THE STONE.  ALSO THE LETTERS M AND D.  THE ROD WAS
 JU3840'HELD ON THE HIGHEST POINT OF THE LARGEST STONE.
 JU3840'
 JU3840
 JU3840                          STATION RECOVERY (1961)
 JU3840
 JU3840'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3840'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED AS
 JU3840'DESCRIBED AND IN GOOD CONDITION.  THE DESCRIPTION ARE ADEQUATE.
 JU3840
 JU3840                          STATION RECOVERY (1971)
 JU3840
 JU3840'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (NER)
 JU3840'STA. A LARGE GRANITE MARKER, MARYLAND, DELAWARE STATE LINE
 JU3840'
 JU3840'TANGENT NO 1 1958 GOOD
 JU3840'
 JU3840'TANGENT NO 2 1958 GOOD.
 JU3840
 JU3840                          STATION RECOVERY (1977)
 JU3840
 JU3840'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 JU3840'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JU3840'CONDITION AS PREVIOUSLY DESCRIBED.
 JU3840'
 JU3840'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3840'4 MILES SOUTHWEST OF NEWARK, DELAWARE.
 JU3840
 JU3840                          STATION RECOVERY (1979)
 JU3840
 JU3840'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 JU3840'STATION RECOVERED AS PREVIOUSLY DESCRIBED.
 JU3840
 JU3840                          STATION RECOVERY (1991)
 JU3840
 JU3840'RECOVERY NOTE BY US POWER SQUADRON 1991 (ADC)
 JU3840'RECOVERED IN GOOD CONDITION.
 JU3840
 JU3840                          STATION RECOVERY (2010)
 JU3840
 JU3840'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU3840'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4183 ***********************************************************************
 JV4183  DESIGNATION -  BOUNDARY MON 83 MD PA
 JV4183  PID         -  JV4183
 JV4183  STATE/COUNTY-  MD/FREDERICK
 JV4183  COUNTRY     -  US
 JV4183  USGS QUAD   -  EMMITSBURG (2016)
 JV4183
 JV4183                         *CURRENT SURVEY CONTROL
 JV4183  ______________________________________________________________________
 JV4183* NAD 83(1991) POSITION- 39 43 11.68275(N) 077 21 09.47739(W)   ADJUSTED
 JV4183* NAVD 88 ORTHO HEIGHT -   163.    (meters)      535.    (feet) SCALED
 JV4183  ______________________________________________________________________
 JV4183  GEOID HEIGHT    -        -33.402 (meters)                     GEOID18
 JV4183  LAPLACE CORR    -          0.52  (seconds)                    DEFLEC18
 JV4183  HORZ ORDER      -  FIRST
 JV4183
 JV4183.The horizontal coordinates were established by classical geodetic methods
 JV4183.and adjusted by the National Geodetic Survey in January 1992.
 JV4183
 JV4183.The orthometric height was scaled from a topographic map.
 JV4183
 JV4183.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4183.GEOID18 height accuracy estimate available here.
 JV4183
 JV4183.Click photographs - Photos may exist for this station.
 JV4183
 JV4183.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4183
 JV4183. The following values were computed from the NAD 83(1991) position.
 JV4183
 JV4183;                    North         East     Units Scale Factor Converg.
 JV4183;SPC MD       -   227,990.293   369,762.981   MT  1.00005838   -0 13 16.8
 JV4183;SPC MD       -   747,998.15  1,213,130.71   sFT  1.00005838   -0 13 16.8
 JV4183;SPC PA S     -    43,000.628   634,072.223   MT  1.00004022   +0 15 28.1
 JV4183;SPC PA S     -   141,077.89  2,080,285.28   sFT  1.00004022   +0 15 28.1
 JV4183;UTM  18      - 4,399,317.331   298,351.395   MT  1.00010063   -1 30 14.1
 JV4183
 JV4183!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4183!SPC MD       -   0.99997970  x   1.00005838  =   1.00003808
 JV4183!SPC PA S     -   0.99997970  x   1.00004022  =   1.00001992
 JV4183!UTM  18      -   0.99997970  x   1.00010063  =   1.00008033
 JV4183
 JV4183:                Primary Azimuth Mark                     Grid Az
 JV4183:SPC MD       -  BOUNDARY MON 83 AZ MK                    127 02 09.2
 JV4183:SPC PA S     -  BOUNDARY MON 83 AZ MK                    126 33 24.3
 JV4183:UTM  18      -  BOUNDARY MON 83 AZ MK                    128 19 06.5
 JV4183
 JV4183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9835199317(NAD 83)
 JV4183
 JV4183|---------------------------------------------------------------------|
 JV4183| PID    Reference Object                     Distance      Geod. Az  |
 JV4183|                                                           dddmmss.s |
 JV4183| JV4157 BIG ROUND TOP LOOKOUT TOWER         APPROX.12.2 KM 0524834.9 |
 JV4183| CJ8174 BOUNDARY MON 83 AZ MK                              1264852.4 |
 JV4183| JV4184 EMMITSBURG CHRIST REFORMED CH       APPROX. 2.6 KM 1280828.1 |
 JV4183| JV4180 EMMITSBURG ST JOSEPHS COLLEGE       APPROX. 3.5 KM 1410226.0 |
 JV4183| CJ8175 BOUNDARY MON 83 RM 1                 54.318 METERS 25947     |
 JV4183| CJ8176 BOUNDARY MON 83 RM 2                 64.041 METERS 34125     |
 JV4183|---------------------------------------------------------------------|
 JV4183
 JV4183                          SUPERSEDED SURVEY CONTROL
 JV4183
 JV4183  NAD 83(1986)-  39 43 11.68463(N)    077 21 09.48166(W) AD(       ) 1
 JV4183  NAD 27      -  39 43 11.33900(N)    077 21 10.52700(W) AD(       ) 1
 JV4183
 JV4183.Superseded values are not recommended for survey control.
 JV4183
 JV4183.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4183.See file dsdata.pdf to determine how the superseded data were derived.
 JV4183
 JV4183_MARKER: DS = TRIANGULATION STATION DISK
 JV4183_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4183_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4183+SATELLITE: SATELLITE OBSERVATIONS - July 19, 2007
 JV4183
 JV4183  HISTORY     - Date     Condition        Report By
 JV4183  HISTORY     - 1939     MONUMENTED       CGS
 JV4183  HISTORY     - 20070719 GOOD             GEOCAC
 JV4183
 JV4183                          STATION DESCRIPTION
 JV4183
 JV4183'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4183'THE STATION IS LOCATED ON THE PENNSYLVANIA-MARYLAND STATE
 JV4183'LINE, AND ON THE LINE BETWEEN PROPERTY OWNED BY MR. CLUCK ON
 JV4183'THE N, AND THE HARNER ESTATE ON THE S.  THE DISK IS SET IN THE
 JV4183'TOP OF A 10- BY 10-INCH MASON AND DIXON LINE STONE MONUMENT WHICH
 JV4183'PROJECTS 16 INCHES, WITH THE LETTER P ENGRAVED ON THE N FACE
 JV4183'AND THE LETTER M ON THE S FACE.  THE CORNERS OF THE STONE HAVE
 JV4183'BEEN CHIPPED OFF.  THE MARK IS ON THE SLOPE OF A HILL 200 YARDS
 JV4183'S OF MR. CLUCKS HOUSE, IN A PASTURE LOT E OF AN ORCHARD, AND
 JV4183'10 FEET S OF A CULTIVATED FIELD.
 JV4183'
 JV4183'THE SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE
 JV4183'STANDARD BRONZE DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1A,
 JV4183'7A, 11A, AND 11B.
 JV4183'
 JV4183'REFERENCE MARK NO.1 IS W OF THE STATION, 1 FOOT E OF THE ORCHARD
 JV4183'FENCE.  THE MARK PROJECTS 12 INCHES.
 JV4183'
 JV4183'REFERENCE MARK NO.2 IS N OF THE STATION, 2 FEET E OF A FENCE
 JV4183'CORNER, 25 FEET E OF A 10-INCH APPLE TREE, 21 FEET W OF A
 JV4183'10-INCH APPLE TREE AND 50 FEET W OF A CHICKEN HOUSE.
 JV4183'
 JV4183'THE AZIMUTH MARK IS LOCATED ABOUT 0.5 MILE S OF THE STATION ON
 JV4183'LAND OWNED BY MRS. FLORENCE.  THE MARK IS 50 FEET E OF THE
 JV4183'CENTER LINE OF STATE HIGHWAY 32, AND PROJECTS 4 INCHES.
 JV4183'
 JV4183'TO REACH THE AZIMUTH FROM THE STATION GO TO MR. CLUCKS HOUSE,
 JV4183'TURN RIGHT ON HIGHWAY AND GO 0.5 MILE TO AZIMUTH ON LEFT.
 JV4183'
 JV4183'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 15 AND
 JV4183'STATE HIGHWAY 32 IN EMMITSBURG GO NW ON STATE HIGHWAY 32 FOR
 JV4183'1.75 MILES TO THE STATE LINE, CONTINUE 0.1 MILE TO MR. CLUCKS
 JV4183'HOUSE, TURN LEFT ON N SIDE OF HOUSE AND BEAR LEFT, S, 200 YARDS
 JV4183'TO STATION.
 JV4183'
 JV4183'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4183
 JV4183                          STATION RECOVERY (2007)
 JV4183
 JV4183'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV4183'COORDINATES ARE ADEQUATE FOR RECOVERY.  TO REACH THE
 JV4183'STATION FROM THE JUNCTION OF U.S. HIGHWAY 15 AND STATE
 JV4183'HIGHWAY 140 IN EMMITSBURG, GO NW ON STATE HIGHWAY 140
 JV4183'1.7 MILES TO A GRAVEL DRIVEWAY ON THE LEFT. CONTINUE
 JV4183'200 YARDS TO STATION ON THE RIGHT. STATION IS 95 FEET N.
 JV4183'OF THE CENTERLINE OF THE DRIVEWAY.  RM 1 IS AS DESCRIBED
 JV4183'AND AT THE BASE OF A CEDAR TREE 2 FEET EAST OF THE REMAINS
 JV4183'OF A FENCE CORNER.  RM 2 WAS NOT FOUND BUT IS PROBABLY
 JV4183'PRESENT AND UNDER HEAVY BRAMBLES AND UNDERBRUSH. THE AZMUTH
 JV4183'MARK WAS NOT RECOVERED.  THIS MARK WAS FOUND WITH THE
 JV4183'PERMISSION OF THE PROPERTY OWNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4158 ***********************************************************************
 JU4158  DESIGNATION -  BOUNDARY MON 85 RESET DEL MD
 JU4158  PID         -  JU4158
 JU4158  STATE/COUNTY-  MD/CECIL
 JU4158  COUNTRY     -  US
 JU4158  USGS QUAD   -  NEWARK WEST (2016)
 JU4158
 JU4158                         *CURRENT SURVEY CONTROL
 JU4158  ______________________________________________________________________
 JU4158* NAD 83(1986) POSITION- 39 41 33.     (N) 075 47 19.     (W)   SCALED
 JU4158* NAVD 88 ORTHO HEIGHT -    62.8   (meters)      206.    (feet) VERTCON3
 JU4158  ______________________________________________________________________
 JU4158  GEOID HEIGHT    -        -33.000 (meters)                     GEOID18
 JU4158
 JU4158.The horizontal coordinates were scaled from a map and have
 JU4158.an estimated accuracy of +/- 6 seconds.
 JU4158
 JU4158.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU4158.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU4158
 JU4158.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4158.GEOID18 height accuracy estimate available here.
 JU4158
 JU4158.Click photographs - Photos may exist for this station.
 JU4158
 JU4158;                    North         East    Units  Estimated Accuracy
 JU4158;SPC MD       -   225,580.      503,910.      MT  (+/- 180 meters Scaled)
 JU4158
 JU4158_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ323939(NAD 83)
 JU4158
 JU4158                          SUPERSEDED SURVEY CONTROL
 JU4158
 JU4158  NGVD 29 (03/25/91)   63.2    (m)          207.     (f) VERT ANG       
 JU4158
 JU4158.Superseded values are not recommended for survey control.
 JU4158
 JU4158.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4158.See file dsdata.pdf to determine how the superseded data were derived.
 JU4158
 JU4158_MARKER: X = CHISELED CROSS
 JU4158_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JU4158_PROJECTION: PROJECTING 60 CENTIMETERS
 JU4158_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU4158_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4158
 JU4158  HISTORY     - Date     Condition        Report By
 JU4158  HISTORY     - 1986     MONUMENTED       NGS
 JU4158  HISTORY     - 19860505 GOOD             NGS
 JU4158
 JU4158                          STATION DESCRIPTION
 JU4158
 JU4158'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 JU4158'THE MARK IS LOCATED ABOUT 4.75 KM (2.95 MI) NORTHEAST OF ELKTON, 3.25
 JU4158'KM (2.00 MI) WEST-NORTHWEST OF NEWARK, DELAWARE AND ON THE
 JU4158'MARYLAND-DELAWARE BOUNDARY.  OWNERSHIP--GIOVANNOZZI AND N. BUCKINGHAM,
 JU4158'1215 SPRING VALLEY ROAD, NEWARK DELAWARE 19711.  TELEPHONE (302)
 JU4158'731-1924.
 JU4158'
 JU4158'TO REACH FROM THE INTERSECTION OF MARYLAND STATE HIGHWAY 279 AND
 JU4158'DELAWARE STATE HIGHWAY 2 AT THE MARYLAND-DELAWARE STATE LINE, GO
 JU4158'EASTERLY ON DELAWARE STATE HIGHWAY 2 FOR 2.45 KM (1.50 MI) TO A ROAD
 JU4158'LEFT.  TURN LEFT AND GO NORTHERLY ON CASHO MILL ROAD FOR 2.35 KM
 JU4158'(1.45 MI) TO A CROSSROADS.  TURN LEFT AND GO NORTHWEST ON NOTTINGHAM
 JU4158'ROAD FOR 0.95 KM (0.60 MI) TO A ROAD LEFT.  TURN LEFT AND GO SOUTHWEST
 JU4158'ON CHURCH ROAD FOR 0.25 KM (0.15 MI) TO A ROAD RIGHT.  TURN RIGHT AND
 JU4158'GO NORTHWEST ON SPRING VALLEY ROAD FOR 0.1 KM (0.05 MI) TO THE
 JU4158'BUCKINGHAM RESIDENCE ON THE LEFT AND THE MONUMENT AT THE NORTHWEST
 JU4158'CORNER OF THE HOUSE.
 JU4158'
 JU4158'THE SURFACE MARK IS THE TOP AND CENTER OF THE 0.3 M (1.0 FT) SQUARE
 JU4158'GRANITE MASON-DIXON STONE WHICH PROJECTS ABOUT 0.6 M (2.0 FT).  THE
 JU4158'UNDERGROUND MARK IS STAMPED---N-S NO. 85 1986---AND IS SET IN THE TOP
 JU4158'OF A 0.15 M (0.5 FT) MASS OF CONCRETE WHICH IS 0.9 M (3.0 FT) BELOW
 JU4158'GROUND.  THEY ARE 0.4 M (1.3 FT) WEST-NORTHWEST OF THE NORTHWEST
 JU4158'CORNER OF THE BUCKINGHAM RESIDENCE, 2.1 M (6.9 FT) EAST OF A TRIPLE
 JU4158'TRUNKED CEDAR TREE AND 19.5 M (64.0 FT) EAST OF A CARSONITE WITNESS
 JU4158'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3841 ***********************************************************************
 JU3841  DESIGNATION -  BOUNDARY MON 87 DE MD PA=RM 2
 JU3841  PID         -  JU3841
 JU3841  STATE/COUNTY-  MD/CECIL
 JU3841  COUNTRY     -  US
 JU3841  USGS QUAD   -  NEWARK WEST (2016)
 JU3841
 JU3841                         *CURRENT SURVEY CONTROL
 JU3841  ______________________________________________________________________
 JU3841* NAD 83(1991) POSITION- 39 43 19.92216(N) 075 47 18.93851(W)   ADJUSTED
 JU3841* NAVD 88 ORTHO HEIGHT -    78.    (meters)      256.    (feet) SCALED
 JU3841  ______________________________________________________________________
 JU3841  GEOID HEIGHT    -        -32.973 (meters)                     GEOID18
 JU3841  LAPLACE CORR    -          0.69  (seconds)                    DEFLEC18
 JU3841  HORZ ORDER      -  SECOND
 JU3841
 JU3841.The horizontal coordinates were established by classical geodetic methods
 JU3841.and adjusted by the National Geodetic Survey in January 1992.
 JU3841
 JU3841.The orthometric height was scaled from a topographic map.
 JU3841
 JU3841.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3841.GEOID18 height accuracy estimate available here.
 JU3841
 JU3841.Click photographs - Photos may exist for this station.
 JU3841
 JU3841.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3841
 JU3841. The following values were computed from the NAD 83(1991) position.
 JU3841
 JU3841;                    North         East     Units Scale Factor Converg.
 JU3841;SPC MD       -   228,875.199   503,867.684   MT  1.00005897   +0 45 37.2
 JU3841;SPC MD       -   750,901.38  1,653,105.89   sFT  1.00005897   +0 45 37.2
 JU3841;UTM  18      - 4,397,222.193   432,413.469   MT  0.99965624   -0 30 14.3
 JU3841
 JU3841!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3841!SPC MD       -   0.99999299  x   1.00005897  =   1.00005196
 JU3841!UTM  18      -   0.99999299  x   0.99965624  =   0.99964923
 JU3841
 JU3841_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3241397222(NAD 83)
 JU3841
 JU3841                          SUPERSEDED SURVEY CONTROL
 JU3841
 JU3841  NAD 83(1986)-  39 43 19.91695(N)    075 47 18.94470(W) AD(       ) 2
 JU3841  NAD 27      -  39 43 19.52160(N)    075 47 20.17140(W) AD(       ) 2
 JU3841  USSD        -  39 43 19.91000(N)    075 47 20.03000(W) AD(       ) 3
 JU3841
 JU3841.Superseded values are not recommended for survey control.
 JU3841
 JU3841.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3841.See file dsdata.pdf to determine how the superseded data were derived.
 JU3841
 JU3841_MARKER: DR = REFERENCE MARK DISK
 JU3841_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3841_STAMPING: M. D. P. CORNER NO 2 1935
 JU3841_MARK LOGO: CGS
 JU3841_PROJECTION: FLUSH
 JU3841_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3841+STABILITY: SURFACE MOTION
 JU3841_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3841+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2010
 JU3841
 JU3841  HISTORY     - Date     Condition        Report By
 JU3841  HISTORY     - 1961     MONUMENTED       CGS
 JU3841  HISTORY     - 20080913 GOOD             GEOCAC
 JU3841  HISTORY     - 20100925 GOOD             GEOCAC
 JU3841
 JU3841                          STATION DESCRIPTION
 JU3841
 JU3841'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3841'LOCATED ABOUT 10.0 MILES SOUTHEAST OF JENNERSVILLE, PENNSYLVANIA
 JU3841'AND ABOUT 3.5 MILES NORTH-NORTHWEST OF NEWARK, DELAWARE AND 0.15
 JU3841'MILE SOUTHEAST OF STATE HIGHWAY 896, 92.2 FEET SOUTH OF
 JU3841'TRIANGULATION STATION M. P. D. CORNER 1935, 12.0 FEET SOUTHWEST
 JU3841'OF A 30-INCH POPLAR TREE AND 12.0 FEET SOUTH OF THE CENTER OF A
 JU3841'SMALL STREAM.  IT IS A 15-INCH SQUARE STONE PROJECTING ABOUT 18
 JU3841'INCHES ABOVE THE SURFACE OF THE GROUND WITH A U.S. COAST AND
 JU3841'GEODETIC SURVEY DISK MOUNTED IN ITS TOP AND CENTER.  THE DISK
 JU3841'IS STAMPED M. D. P. CORNER NO 2 1935 AND IS A STANDARD
 JU3841'REFERENCE MARK DISK.  THIS STONE IS AT THE NORTH END OF THE
 JU3841'DELAWARE STATE LINE AND THE EAST END OF THE MARYLAND STATE LINE
 JU3841'WITH A, WEDGE, SEPARATING THE CORNER BETWEEN MARYLAND,
 JU3841'DELAWARE AND THE CIRCLE AND THE NORTH LINE OF PENNSYLVANIA.
 JU3841'
 JU3841'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION
 JU3841'M. D. P. CORNER 1935, DISTANCE BEING 28.094 METERS AND (92.171
 JU3841'FEET) SOUTH OF STATION M. D. P. CORNER 1935.
 JU3841'
 JU3841'NOTE- THE POSITION OF REFERENCE MARK NO. 2 CHECKS THAT OF NORTHEAST
 JU3841'CORNER OF MARYLAND 1892.
 JU3841
 JU3841                          STATION RECOVERY (2008)
 JU3841
 JU3841'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JU3841'TO REACH FROM THE PA-MD STATE LINE AT PA ROUTE 896 - CONTINUE NORTH
 JU3841'FOR 0.05 MILE TO A FIELD ROAD RIGHT. TURN RIGHT, EAST, AND CROSS A
 JU3841'FIELD FOR 0.10 MILE THEN BEAR RIGHT, SOUTH, DOWN THE HILL FOR ABOUT
 JU3841'0.05 MILE TO THE EDGE OF THE TIMBER, FOLLOWING A SMALL TRAIL TO
 JU3841'TRIANGULATION STATION MDP CORNER (JU3824) ON THE LEFT. PROCEED SOUTH
 JU3841'ALONG THE TRAIL ACROSS A WOODEN FOOTBRIDGE TO THE MONUMENT AND MARK ON
 JU3841'THE RIGHT.
 JU3841
 JU3841                          STATION RECOVERY (2010)
 JU3841
 JU3841'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU3841'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3434 ***********************************************************************
 JV3434  DESIGNATION -  BOUNDARY MON 91 MD PA
 JV3434  PID         -  JV3434
 JV3434  STATE/COUNTY-  MD/WASHINGTON
 JV3434  COUNTRY     -  US
 JV3434  USGS QUAD   -  SMITHSBURG (2016)
 JV3434
 JV3434                         *CURRENT SURVEY CONTROL
 JV3434  ______________________________________________________________________
 JV3434* NAD 83(1991) POSITION- 39 43 11.87009(N) 077 30 11.57136(W)   ADJUSTED
 JV3434* NAVD 88 ORTHO HEIGHT -   401.142 (meters)     1316.08  (feet) ADJUSTED
 JV3434  ______________________________________________________________________
 JV3434  GEOID HEIGHT    -        -33.645 (meters)                     GEOID18
 JV3434  LAPLACE CORR    -          9.08  (seconds)                    DEFLEC18
 JV3434  DYNAMIC HEIGHT  -        400.905 (meters)     1315.30  (feet) COMP
 JV3434  MODELED GRAVITY -    980,024.3   (mgal)                       NAVD 88
 JV3434
 JV3434  HORZ ORDER      -  FIRST
 JV3434  VERT ORDER      -  SECOND    CLASS 0
 JV3434
 JV3434.The horizontal coordinates were established by classical geodetic methods
 JV3434.and adjusted by the National Geodetic Survey in January 1992.
 JV3434
 JV3434.The orthometric height was determined by differential leveling and
 JV3434.adjusted by the NATIONAL GEODETIC SURVEY
 JV3434.in June 1991.
 JV3434
 JV3434.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3434.GEOID18 height accuracy estimate available here.
 JV3434
 JV3434.Click photographs - Photos may exist for this station.
 JV3434
 JV3434.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3434
 JV3434.The dynamic height is computed by dividing the NAVD 88
 JV3434.geopotential number by the normal gravity value computed on the
 JV3434.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3434.degrees latitude (g = 980.6199 gals.).
 JV3434
 JV3434.The modeled gravity was interpolated from observed gravity values.
 JV3434
 JV3434. The following values were computed from the NAD 83(1991) position.
 JV3434
 JV3434;                    North         East     Units Scale Factor Converg.
 JV3434;SPC MD       -   228,056.596   356,851.271   MT  1.00005839   -0 18 57.0
 JV3434;SPC MD       -   748,215.68  1,170,769.54   sFT  1.00005839   -0 18 57.0
 JV3434;SPC PA S     -    42,959.317   621,160.643   MT  1.00004021   +0 09 36.4
 JV3434;SPC PA S     -   140,942.36  2,037,924.54   sFT  1.00004021   +0 09 36.4
 JV3434;UTM  18      - 4,399,672.861   285,443.442   MT  1.00016678   -1 36 00.9
 JV3434
 JV3434!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3434!SPC MD       -   0.99994235  x   1.00005839  =   1.00000074
 JV3434!SPC PA S     -   0.99994235  x   1.00004021  =   0.99998256
 JV3434!UTM  18      -   0.99994235  x   1.00016678  =   1.00010912
 JV3434
 JV3434:                Primary Azimuth Mark                     Grid Az
 JV3434:SPC MD       -  BOUNDARY MON 97 MD PA                    270 42 50.1
 JV3434:SPC PA S     -  BOUNDARY MON 97 MD PA                    270 14 16.7
 JV3434:UTM  18      -  BOUNDARY MON 97 MD PA                    271 59 54.0
 JV3434
 JV3434_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8544399672(NAD 83)
 JV3434
 JV3434|---------------------------------------------------------------------|
 JV3434| PID    Reference Object                     Distance      Geod. Az  |
 JV3434|                                                           dddmmss.s |
 JV3434| JV4195 BLUE RIDGE LOOKOUT TOWER            APPROX. 1.5 KM 0641028.5 |
 JV3434| JV3436 BOUNDARY MON 91 RM 2                 31.623 METERS 08234     |
 JV3434| JV4716 HGR HAGERSTOWN AIRPORT BEACON       APPROX.18.9 KM 2654509.9 |
 JV3434| JV3369 BOUNDARY MON 97 MD PA               APPROX. 9.7 KM 2702353.1 |
 JV3434| JV3435 BOUNDARY MON 91 RM 1                 21.302 METERS 33007     |
 JV3434|---------------------------------------------------------------------|
 JV3434
 JV3434                          SUPERSEDED SURVEY CONTROL
 JV3434
 JV3434  NAD 83(1986)-  39 43 11.87190(N)    077 30 11.58089(W) AD(       ) 1
 JV3434  NAD 27      -  39 43 11.53400(N)    077 30 12.61500(W) AD(       ) 1
 JV3434  NGVD 29             401.31   (m)         1316.6    (f) LEVELING    3  
 JV3434  NGVD 29 (11/26/84)  401.307  (m)         1316.62   (f) ADJUSTED    2 0
 JV3434
 JV3434.Superseded values are not recommended for survey control.
 JV3434
 JV3434.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3434.See file dsdata.pdf to determine how the superseded data were derived.
 JV3434
 JV3434_MARKER: DS = TRIANGULATION STATION DISK
 JV3434_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3434_SP_SET: MONUMENT
 JV3434_STAMPING: BOUNDARY MONUMENT NO 91 1939
 JV3434_MARK LOGO: CGS
 JV3434_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3434+STABILITY: SURFACE MOTION
 JV3434_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3434+SATELLITE: SATELLITE OBSERVATIONS - November 17, 2010
 JV3434
 JV3434  HISTORY     - Date     Condition        Report By
 JV3434  HISTORY     - 1939     MONUMENTED       CGS
 JV3434  HISTORY     - 1942     GOOD             CGS
 JV3434  HISTORY     - 20041024 GOOD             GEOCAC
 JV3434  HISTORY     - 20101117 GOOD             MDSHA
 JV3434
 JV3434                          STATION DESCRIPTION
 JV3434
 JV3434'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV3434'STATION IS LOCATED ON THE N SLOPE OF THE MOUNTAIN AT PEN MAR
 JV3434'ABOUT 275 FEET S OF THE ABOVE THE RAILROAD TRACKS AND DIRECTLY
 JV3434'IN FRONT (N) OF THE HOUSE OF MR. GEO. H. MILNE OF
 JV3434'WASHINGTON, D.C.  THE MARK IS SET IN A DRILL HOLE IN THE TOP OF
 JV3434'THE PENNA.-MD. BOUNDARY MONUMENT NO.91.  MONUMENT IS A 10- BY
 JV3434'10-INCH CONCRETE BLOCK PROJECTING 14 INCHES ABOVE THE SURFACE,
 JV3434'MONUMENT HAS A LARGE M ON THE S SIDE AND A LARGE P ON THE N
 JV3434'SIDE, THE CORNERS AND TOP EDGE OF THE MONUMENT HAVE BEEN BROKEN
 JV3434'OFF, 7.6 FEET W OF A 10-INCH LOCUST TREE, 13 FEET S OF A
 JV3434'12-INCH LOCUST TREE AND 32 FEET N OF THE CENTER LINE OF A
 JV3434'DIRT ROAD WHICH DEAD ENDS AT THIS POINT.
 JV3434'
 JV3434'THE STATION MARK IS A STANDARD BRONZE DISK SET IN CONCRETE AS
 JV3434'DESCRIBED IN NOTE 11A.  REFERENCE MARK NO.1 IS A STANDARD BRONZE
 JV3434'DISK IN A BOULDER AS DESCRIBED IN NOTE 12C.  REFERENCE MARK
 JV3434'NO.2 IS A STANDARD BRONZE DISK SET IN CONCRETE AS DESCRIBED IN
 JV3434'NOTE 11C.
 JV3434'
 JV3434'REFERENCE MARK NO.2 IS W OF THE STATION AND IS SET IN A DRILL
 JV3434'HOLE IN THE CONCRETE FOUNDATION OF A GARAGE, 8 INCHES N OF THE NE
 JV3434'CORNER OF THE GARAGE DOOR AND 12 FEET S OF THE CENTER LINE OF A
 JV3434'DIRT ROAD.
 JV3434'
 JV3434'REFERENCE MARK NO.1 IS NW OF THE STATION AND SET IN A DRILL
 JV3434'HOLE IN A BOULDER ABOUT 6 FEET IN DIAMETER AND PROJECTS ABOUT 3
 JV3434'FEET ABOVE THE GROUND.
 JV3434'
 JV3434'NO SUITABLE PLACE FROM AN AZIMUTH MARK DUE TO DENSE WOODS.
 JV3434'
 JV3434'TO REACH THE STATION FROM THE ENTRANCE TO PEN MAR PARK AND
 JV3434'THE HOTEL EDGEWOOD IN PEN MAR, FOLLOW PAVED ROAD NW DOWN HILL FOR
 JV3434'0.15 MILE TO A SIGN ON THE RIGHT WALDHEIM HOTEL HERE TURN RIGHT
 JV3434'ON A DIRT ROAD ON THE RIGHT SIDE OF HOTEL AND GO 0.2 MILE TO
 JV3434'END OF ROAD AND STATION ON THE LEFT SIDE AND ABOUT 8 FEET LOWER
 JV3434'THAN ROAD.
 JV3434'
 JV3434'HEIGHT OF LIGHT ABOVE STATION MARK 33 METERS.
 JV3434
 JV3434                          STATION RECOVERY (1942)
 JV3434
 JV3434'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV3434'0.2 MI E FROM PENN MAR.
 JV3434'IN FRANKLIN COUNTY, PENNSYLVANIA, AND WASHINGTON COUNTY, MARYLAND,
 JV3434'0.2 MILE EAST ALONG A DIRT ROAD FROM THE WESTERN MARYLAND RAILWAY
 JV3434'STATION IN PEN MAR, WASHINGTON COUNTY, MARYLAND, ALONG THE
 JV3434'SOUTH SIDE OF THE WALDHEIM HOTEL, IN THE TOP OF THE
 JV3434'PENNSYLVANIA-MARYLAND BOUNDARY MONUMENT 91, 275 FEET SOUTH OF
 JV3434'AND ABOVE THE RAILROAD TRACKS, AT THE DEAD END OF THE DIRT ROAD,
 JV3434'32 FEET NORTH OF THE CENTERLINE OF THE ROAD, AND 8 FEET BELOW
 JV3434'THE ROAD LEVEL.  A STANDAD TRIANGULATION-STATION DISK, STAMPED
 JV3434'BOUNDRY MONUMENT NO 91 1939.
 JV3434
 JV3434                          STATION RECOVERY (2004)
 JV3434
 JV3434'RECOVERY NOTE BY GEOCACHING 2004 (MFL)
 JV3434'MARK IS BENEATH A SHRUB AND IS APPROXIMATELY 1 FOOT SOUTH OF A
 JV3434'FIBERGLASS WITNESS POST. REFERENCE MARKS LOCATED. THE GARAGE DESCRIBED
 JV3434'FOR REFERENCE MARK 2 IS NOW JUST STONE WALLS WITHOUT A ROOF OR DOOR.
 JV3434
 JV3434                          STATION RECOVERY (2010)
 JV3434
 JV3434'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (TPB)
 JV3434'UPDATED RECOVERY DESCRIPTION- TO REACH THE BOUNDARY MONUMENT, TRAVEL
 JV3434'NORTH ON PEN MAR RD, FROM THE INTERSECTION OF WALNUT AVE/PEN MAR HIGH
 JV3434'ROCK RD/AND PEN MAR RD ADJACENT TO 'PEN MAR - WASHINGTON COUNTY PARK'
 JV3434'TO WALDHEIM RD JUST BEFORE THE WASHINGTON CO./FRANKLIN CO. STATE LINE.
 JV3434'
 JV3434'TURN RIGHT ON WALDHEIM ROAD AND PROCEED 0.2 MILES TO THE ROADS END, IN
 JV3434'FRONT OF THE LAST 2 STORY FRAME HOUSE ON RIGHT, AND ALLEGHENY POWER
 JV3434'POLE 1029132 ON LEFT.  BOUNDARY MONUMENT CAN THEN BE FOUND AS
 JV3434'DESCRIBED ABOVE DOWNSLOPE OF THE ROAD'S END AND 2 STORY FRAME HOUSE
 JV3434'FRONT YARD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3436 ***********************************************************************
 JV3436  DESIGNATION -  BOUNDARY MON 91 RM 2
 JV3436  PID         -  JV3436
 JV3436  STATE/COUNTY-  MD/WASHINGTON
 JV3436  COUNTRY     -  US
 JV3436  USGS QUAD   -  SMITHSBURG (2016)
 JV3436
 JV3436                         *CURRENT SURVEY CONTROL
 JV3436  ______________________________________________________________________
 JV3436* NAD 83(1986) POSITION- 39 43 12.00   (N) 077 30 10.25   (W)   HD_HELD1
 JV3436* NAVD 88 ORTHO HEIGHT -   403.597 (meters)     1324.13  (feet) ADJUSTED
 JV3436  ______________________________________________________________________
 JV3436  GEOID HEIGHT    -        -33.644 (meters)                     GEOID18
 JV3436  DYNAMIC HEIGHT  -        403.358 (meters)     1323.35  (feet) COMP
 JV3436  MODELED GRAVITY -    980,024.4   (mgal)                       NAVD 88
 JV3436
 JV3436  VERT ORDER      -  SECOND    CLASS 0
 JV3436
 JV3436.The horizontal coordinates were determined by differentially corrected
 JV3436.hand held GPS observations or other comparable positioning techniques
 JV3436.and have an estimated accuracy of +/- 3 meters.
 JV3436
 JV3436.The orthometric height was determined by differential leveling and
 JV3436.adjusted by the NATIONAL GEODETIC SURVEY
 JV3436.in June 1991.
 JV3436
 JV3436.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3436.GEOID18 height accuracy estimate available here.
 JV3436
 JV3436.Click photographs - Photos may exist for this station.
 JV3436
 JV3436.The dynamic height is computed by dividing the NAVD 88
 JV3436.geopotential number by the normal gravity value computed on the
 JV3436.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3436.degrees latitude (g = 980.6199 gals.).
 JV3436
 JV3436.The modeled gravity was interpolated from observed gravity values.
 JV3436
 JV3436;                    North         East    Units  Estimated Accuracy
 JV3436;SPC MD       -   228,060.4     356,882.8     MT  (+/- 3 meters HH1 GPS) 
 JV3436
 JV3436_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8547599675(NAD 83)
 JV3436
 JV3436                          SUPERSEDED SURVEY CONTROL
 JV3436
 JV3436  NGVD 29 (11/26/84)  403.762  (m)         1324.68   (f) ADJUSTED    2 0
 JV3436
 JV3436.Superseded values are not recommended for survey control.
 JV3436
 JV3436.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3436.See file dsdata.pdf to determine how the superseded data were derived.
 JV3436
 JV3436_MARKER: DR = REFERENCE MARK DISK
 JV3436_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3436_SP_SET: FOUNDATION
 JV3436_STAMPING: BOUNDARY MON NO 91 NO 2 1939
 JV3436_MARK LOGO: CGS
 JV3436_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3436_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3436+SATELLITE: SATELLITE OBSERVATIONS - October 24, 2004
 JV3436
 JV3436  HISTORY     - Date     Condition        Report By
 JV3436  HISTORY     - 1939     MONUMENTED       CGS
 JV3436  HISTORY     - 1942     GOOD             CGS
 JV3436  HISTORY     - 20041024 GOOD             GEOCAC
 JV3436
 JV3436                          STATION DESCRIPTION
 JV3436
 JV3436'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3436'0.2 MI E FROM PEN MAR.
 JV3436'0.2 MILE EAST ALONG A DIRT ROAD FROM THE WESTERN MARYLAND RAILWAY
 JV3436'STATION IN PEN MAR, WASHINGTON COUNTY, MARYLAND, ALONG THE
 JV3436'SOUTH SIDE OF THE WALDHEIM HOTEL, AT THE DEAD END OF THE ROAD,
 JV3436'12 FEET SOUTH OF THE CENTERLINE OF THE ROAD, 103 FEET WEST OF
 JV3436'PENNSYLVANIA-MARYLAND BOUNDARY MONUMENT 91, DESCRIBED ABOVE,
 JV3436'1.8 FEET NORTHWEST OF THE NORTHEAST CORNER OF A GARAGE, AND
 JV3436'IN THE CONCRETE FOUNDATION OF THE GARAGE.  A STANDARD REFERENCE-MARK
 JV3436'DISK, STAMPED BOUNDARY MON. NO 91 NO 2 1939.
 JV3436
 JV3436                          STATION RECOVERY (2004)
 JV3436
 JV3436'RECOVERY NOTE BY GEOCACHING 2004 (MFL)
 JV3436'GARAGE IS NOW JUST STONE WALLS WITH NO DOOR. MARK IS LOCATED WHERE
 JV3436'DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3369 ***********************************************************************
 JV3369  DESIGNATION -  BOUNDARY MON 97 MD PA
 JV3369  PID         -  JV3369
 JV3369  STATE/COUNTY-  MD/WASHINGTON
 JV3369  COUNTRY     -  US
 JV3369  USGS QUAD   -  SMITHSBURG (2016)
 JV3369
 JV3369                         *CURRENT SURVEY CONTROL
 JV3369  ______________________________________________________________________
 JV3369* NAD 83(1991) POSITION- 39 43 13.85466(N) 077 36 58.33287(W)   ADJUSTED
 JV3369* NAVD 88 ORTHO HEIGHT -   196.432 (meters)      644.46  (feet) ADJUSTED
 JV3369  ______________________________________________________________________
 JV3369  GEOID HEIGHT    -        -34.062 (meters)                     GEOID18
 JV3369  LAPLACE CORR    -          4.76  (seconds)                    DEFLEC18
 JV3369  DYNAMIC HEIGHT  -        196.318 (meters)      644.09  (feet) COMP
 JV3369  MODELED GRAVITY -    980,044.1   (mgal)                       NAVD 88
 JV3369
 JV3369  HORZ ORDER      -  FIRST
 JV3369  VERT ORDER      -  SECOND    CLASS 0
 JV3369
 JV3369.The horizontal coordinates were established by classical geodetic methods
 JV3369.and adjusted by the National Geodetic Survey in January 1992.
 JV3369
 JV3369.The orthometric height was determined by differential leveling and
 JV3369.adjusted by the NATIONAL GEODETIC SURVEY
 JV3369.in June 1991.
 JV3369
 JV3369.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3369.GEOID18 height accuracy estimate available here.
 JV3369
 JV3369.Click photographs - Photos may exist for this station.
 JV3369
 JV3369.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3369
 JV3369.The dynamic height is computed by dividing the NAVD 88
 JV3369.geopotential number by the normal gravity value computed on the
 JV3369.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3369.degrees latitude (g = 980.6199 gals.).
 JV3369
 JV3369.The modeled gravity was interpolated from observed gravity values.
 JV3369
 JV3369. The following values were computed from the NAD 83(1991) position.
 JV3369
 JV3369;                    North         East     Units Scale Factor Converg.
 JV3369;SPC MD       -   228,177.207   347,163.410   MT  1.00005853   -0 23 12.3
 JV3369;SPC MD       -   748,611.39  1,138,985.29   sFT  1.00005853   -0 23 12.3
 JV3369;SPC PA S     -    42,999.650   611,472.292   MT  1.00004009   +0 05 12.5
 JV3369;SPC PA S     -   141,074.69  2,006,138.68   sFT  1.00004009   +0 05 12.5
 JV3369;UTM  18      - 4,400,010.762   275,759.423   MT  1.00021911   -1 40 21.2
 JV3369
 JV3369!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3369!SPC MD       -   0.99997453  x   1.00005853  =   1.00003306
 JV3369!SPC PA S     -   0.99997453  x   1.00004009  =   1.00001462
 JV3369!UTM  18      -   0.99997453  x   1.00021911  =   1.00019363
 JV3369
 JV3369:                Primary Azimuth Mark                     Grid Az
 JV3369:SPC MD       -  BOUNDARY MON 97 AZ MK                    304 29 32.6
 JV3369:SPC PA S     -  BOUNDARY MON 97 AZ MK                    304 01 07.8
 JV3369:UTM  18      -  BOUNDARY MON 97 AZ MK                    305 46 41.5
 JV3369
 JV3369_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STK7575900010(NAD 83)
 JV3369
 JV3369|---------------------------------------------------------------------|
 JV3369| PID    Reference Object                     Distance      Geod. Az  |
 JV3369|                                                           dddmmss.s |
 JV3369| JV3371 BOUNDARY MON 97 RM 1                 31.538 METERS 06524     |
 JV3369| JV4716 HGR HAGERSTOWN AIRPORT BEACON       APPROX. 9.3 KM 2604945.4 |
 JV3369| CJ8178 BOUNDARY MON 97 AZ MK                              3040620.3 |
 JV3369| JV3370 BOUNDARY MON 97 RM 2                 26.591 METERS 31933     |
 JV3369|---------------------------------------------------------------------|
 JV3369
 JV3369                          SUPERSEDED SURVEY CONTROL
 JV3369
 JV3369  NAD 83(1986)-  39 43 13.85506(N)    077 36 58.34401(W) AD(       ) 1
 JV3369  NAD 27      -  39 43 13.51600(N)    077 36 59.37600(W) AD(       ) 1
 JV3369  NGVD 29             196.62   (m)          645.1    (f) LEVELING    3  
 JV3369  NGVD 29 (11/26/84)  196.616  (m)          645.06   (f) ADJUSTED    2 0
 JV3369
 JV3369.Superseded values are not recommended for survey control.
 JV3369
 JV3369.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3369.See file dsdata.pdf to determine how the superseded data were derived.
 JV3369
 JV3369_MARKER: DS = TRIANGULATION STATION DISK
 JV3369_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3369_SP_SET: MONUMENT
 JV3369_STAMPING: BOUNDARY MON NO 97 1939
 JV3369_MARK LOGO: CGS
 JV3369_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3369+STABILITY: SURFACE MOTION
 JV3369_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3369+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2008
 JV3369
 JV3369  HISTORY     - Date     Condition        Report By
 JV3369  HISTORY     - 1939     MONUMENTED       CGS
 JV3369  HISTORY     - 1942     GOOD             CGS
 JV3369  HISTORY     - 20080329 GOOD             GEOCAC
 JV3369
 JV3369                          STATION DESCRIPTION
 JV3369
 JV3369'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV3369'THIS STATION IS LOCATED ABOUT 2.5 MILES SW OF WAYNESBORO, PA. 2
 JV3369'MILES N OF LEITERSBURG, MD. ABOUT 0.6 MILE W OF THE
 JV3369'WAYNESBORO-HAGERSTOWN ROAD, ON THE MARYLAND-PENNSYLVANIA STATE
 JV3369'LINE.  ON A SLIGHT KNOLL ON THE N SIDE OF AN APPLE ORCHARD OWNED
 JV3369'BY MR. JOHN KING.  THE MARK IS SET IN A 1-FOOT SQUARE STONE, SET
 JV3369'BY THE RE-SURVEY MASON-DIXON LINE IN 1908.  IT HAS THE LETTER P
 JV3369'ON THE N SIDE AND THE LETTER M ON THE S SIDE.  IT IS ABOUT 100
 JV3369'YARDS W OF THE HIGHEST POINT OF THE KNOLL AT THE W END OF A
 JV3369'STONE FENCE, 6 FEET SW OF A TRIANGLE-BLAZED 6-INCH CHERRY TREE.
 JV3369'THE MONUMENT PROJECTS 18 INCHES.  A STANDARD DISK WAS
 JV3369'CEMENTED IN THE TOP OF THE MONUMENT BY THIS PARTY.
 JV3369'
 JV3369'THE SURFACE MARK IS A STANDARD BRONZE DISK SET IN CONCRETE AS
 JV3369'DESCRIBED IN NOTE 1A.  THE REFERENCE AND AZIMUTH MARKS ARE STANDARD
 JV3369'BRONZE DISKS IN A BOULDER AS DESCRIBED IN NOTE 12C.
 JV3369'
 JV3369'REFERENCE MARK NO.1 IS NE OF THE STATION SET IN AN OUTCROPPING
 JV3369'BOULDER PROJECTING 8 INCHES.
 JV3369'
 JV3369'REFERENCE MARK NO.2 IS NW OF THE STATION SET IN AN OUTCROPPING
 JV3369'BOULDER PROJECTING 6 INCHES.
 JV3369'
 JV3369'THE AZIMUTH MARK IS APPROXIMATELY 0.3 MILE NW OF THE STATION.  IT
 JV3369'IS A STANDARD DISK CEMENTED IN A DRILL HOLE IN AN OUTCROPPING
 JV3369'BOULDER IN THE NW CORNER OF THE PASTURE, 15 PACES S OF A RAIL
 JV3369'FENCE, 10 PACES SE OF A WILD CHERRY TREE.  THE BOULDER PROJECTS
 JV3369'ABOUT 2 FEET.
 JV3369'
 JV3369'TO REACH THE STATION FROM LEITERSBURG GO NE ON STATE HIGHWAY 60
 JV3369'FOR 0.25 MILE TO A FORK, TAKE LEFT FORK STATE HIGHWAY 60 AND GO
 JV3369'1.7 MILES TO A SIDE ROAD LEFT, TURN LEFT AND GO W ON DIRT ROAD
 JV3369'FOR 0.75 MILE TO AN IRON GATE ON THE RIGHT, TURN RIGHT AND PASS
 JV3369'THROUGH THE ORCHARD TO THE STONE FENCE AND THE STATION.
 JV3369'
 JV3369'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV3369
 JV3369                          STATION RECOVERY (1942)
 JV3369
 JV3369'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV3369'3.5 MI SW FROM WAYNESBORO.
 JV3369'IN WASHINGTON COUNTY, MARYLAND, AND FRANKLIN COUNTY, PENNSYLVANIA
 JV3369'3.5 MILES SOUTHWEST ALONG PENNSYLVANIA STATE HIGHWAY 316 FROM THE
 JV3369'POST OFFICE AT WAYNESBORO, FRANKLIN COUNTY, THENCE 0.3 MILE
 JV3369'SOUTHWEST ALONG MARYLAND STATE HIGHWAY 60 AND THENCE 0.7 MILE
 JV3369'WEST ALONG A DIRT ROAD, ON A SLIGHT KNOLL ON THE NORTH SIDE OF AN
 JV3369'APPLE ORCHARD OWNED BY MR. JOHN KING, 500 FEET NORTH OF MR. JOHN
 JV3369'KINGS HOUSE, 175 FEET NORTHEAST OF POWER LINE POLE H 8999, 6 FEET
 JV3369'WEST OF A TRIANGULAR-BLAZED CHERRY TREE, AT THE WEST END OF A
 JV3369'STONE FENCE, AND IN THE TOP OF PENNSYLVANIA MARYLAND BOUNDARY
 JV3369'MONUMENT 97.  A STANDARD TRIANGULATION-STATION DISK, STAMPED
 JV3369'BOUNDARY MON. NO 97 1939.
 JV3369
 JV3369                          STATION RECOVERY (2008)
 JV3369
 JV3369'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3369'FROM PA RT. 316, TRAVEL WEST ON IRON BRIDGE ROAD TO THE TOP
 JV3369'OF A HILL AND SHOEMAKER ROAD RUNNING SOUTH.  FOLLOW SHOEMAKER
 JV3369'ROAD TO MILLER'S CHURCH ROAD AND PROCEED EAST TO THE MARKS ON
 JV3369'THE LEFT.  THE PROPERTY IS NO LONGER OWNED BY JOHN KING.  CURRENT
 JV3369'OWNER IS AWARE OF THE MARKS.  APPLE ORCHARD IS GONE.  RM 2 IS IN
 JV3369'PASTURELAND NORTH OF THE FENCELINE.  STATION AND RM 1 ARE OTHERWISE
 JV3369'AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1741 ***********************************************************************
 HU1741  DESIGNATION -  BOUNDARY MON EW 25 DE MD OFFSET
 HU1741  PID         -  HU1741
 HU1741  STATE/COUNTY-  MD/WICOMICO
 HU1741  COUNTRY     -  US
 HU1741  USGS QUAD   -  DELMAR (2016)
 HU1741
 HU1741                         *CURRENT SURVEY CONTROL
 HU1741  ______________________________________________________________________
 HU1741* NAD 83(1991) POSITION- 38 27 15.29633(N) 075 30 33.81161(W)   ADJUSTED
 HU1741* NAVD 88 ORTHO HEIGHT -    17.    (meters)       56.    (feet) VERTCON3
 HU1741  ______________________________________________________________________
 HU1741  GEOID HEIGHT    -        -35.769 (meters)                     GEOID18
 HU1741  LAPLACE CORR    -         -0.93  (seconds)                    DEFLEC18
 HU1741  HORZ ORDER      -  SECOND
 HU1741
 HU1741.The horizontal coordinates were established by classical geodetic methods
 HU1741.and adjusted by the National Geodetic Survey in January 1992.
 HU1741
 HU1741.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1741.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1741
 HU1741.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1741.GEOID18 height accuracy estimate available here.
 HU1741
 HU1741.Click photographs - Photos may exist for this station.
 HU1741
 HU1741.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1741
 HU1741. The following values were computed from the NAD 83(1991) position.
 HU1741
 HU1741;                    North         East     Units Scale Factor Converg.
 HU1741;SPC MD       -    88,487.063   530,103.251   MT  0.99997675   +0 56 08.0
 HU1741;SPC MD       -   290,311.31  1,739,180.42   sFT  0.99997675   +0 56 08.0
 HU1741;UTM  18      - 4,256,339.714   455,553.875   MT  0.99962433   -0 19 00.4
 HU1741
 HU1741!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1741!SPC MD       -   1.00000298  x   0.99997675  =   0.99997973
 HU1741!UTM  18      -   1.00000298  x   0.99962433  =   0.99962731
 HU1741
 HU1741_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5555356339(NAD 83)
 HU1741
 HU1741                          SUPERSEDED SURVEY CONTROL
 HU1741
 HU1741  NAD 83(1986)-  38 27 15.28745(N)    075 30 33.83502(W) AD(       ) 2
 HU1741  NAD 27      -  38 27 14.87209(N)    075 30 35.11338(W) AD(       ) 2
 HU1741  NGVD 29 (07/19/86)   17.     (m)           56.     (f) VERT ANG       
 HU1741
 HU1741.Superseded values are not recommended for survey control.
 HU1741
 HU1741.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1741.See file dsdata.pdf to determine how the superseded data were derived.
 HU1741
 HU1741_MARKER: V = STONE MONUMENT
 HU1741_SETTING: 0 = UNSPECIFIED SETTING
 HU1741_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1741
 HU1741  HISTORY     - Date     Condition        Report By
 HU1741  HISTORY     - 1974     MONUMENTED       NGS
 HU1741
 HU1741                          STATION DESCRIPTION
 HU1741
 HU1741'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1741'BOUNDARY MONUMENT 25 OFFSET IS A 6X10-INCH GRANITE MONUMENT THAT
 HU1741'PROJECTS 2 FEET ABOVE THE GROUND SURFACE.  IT IS 22.8 FEET S OF THE
 HU1741'CENTER LINE OF STATE ROAD 54 AND 13.8 FEET S OF BOUNDARY
 HU1741'MONUMENT 25.
 HU1741'
 HU1741'FOR ADDITIONAL INFORMATION SEE DESCRIPTION FOR TOWNSEND 1974.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4816 ***********************************************************************
 JV4816  DESIGNATION -  BOUNDARY MON NR STA MADIX 1935
 JV4816  PID         -  JV4816
 JV4816  STATE/COUNTY-  MD/CECIL
 JV4816  COUNTRY     -  US
 JV4816  USGS QUAD   -  CONOWINGO DAM (2016)
 JV4816
 JV4816                         *CURRENT SURVEY CONTROL
 JV4816  ______________________________________________________________________
 JV4816* NAD 83(1991) POSITION- 39 43 16.88306(N) 076 09 15.22320(W)   ADJUSTED
 JV4816* NAVD 88 ORTHO HEIGHT -   143.    (meters)      469.    (feet) SCALED
 JV4816  ______________________________________________________________________
 JV4816  GEOID HEIGHT    -        -32.952 (meters)                     GEOID18
 JV4816  LAPLACE CORR    -         -1.01  (seconds)                    DEFLEC18
 JV4816  HORZ ORDER      -  SECOND
 JV4816
 JV4816.The horizontal coordinates were established by classical geodetic methods
 JV4816.and adjusted by the National Geodetic Survey in January 1992.
 JV4816
 JV4816.The orthometric height was scaled from a topographic map.
 JV4816
 JV4816.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4816.GEOID18 height accuracy estimate available here.
 JV4816
 JV4816.Click photographs - Photos may exist for this station.
 JV4816
 JV4816.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4816
 JV4816. The following values were computed from the NAD 83(1991) position.
 JV4816
 JV4816;                    North         East     Units Scale Factor Converg.
 JV4816;SPC MD       -   228,428.230   472,519.606   MT  1.00005875   +0 31 51.0
 JV4816;SPC MD       -   749,434.95  1,550,258.07   sFT  1.00005875   +0 31 51.0
 JV4816;SPC PA S     -    44,320.549   736,819.352   MT  1.00003991   +1 02 07.2
 JV4816;SPC PA S     -   145,408.33  2,417,381.49   sFT  1.00003991   +1 02 07.2
 JV4816;UTM  18      - 4,397,468.070   401,074.848   MT  0.99972048   -0 44 15.6
 JV4816
 JV4816!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4816!SPC MD       -   0.99998278  x   1.00005875  =   1.00004153
 JV4816!SPC PA S     -   0.99998278  x   1.00003991  =   1.00002269
 JV4816!UTM  18      -   0.99998278  x   0.99972048  =   0.99970326
 JV4816
 JV4816_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0107497468(NAD 83)
 JV4816
 JV4816                          SUPERSEDED SURVEY CONTROL
 JV4816
 JV4816  NAD 83(1986)-  39 43 16.87672(N)    076 09 15.22791(W) AD(       ) 2
 JV4816  NAD 27      -  39 43 16.49800(N)    076 09 16.40500(W) AD(       ) 2
 JV4816
 JV4816.Superseded values are not recommended for survey control.
 JV4816
 JV4816.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4816.See file dsdata.pdf to determine how the superseded data were derived.
 JV4816
 JV4816_MARKER: Z = SEE DESCRIPTION
 JV4816_SETTING: 0 = UNSPECIFIED SETTING
 JV4816_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4816
 JV4816  HISTORY     - Date     Condition        Report By
 JV4816  HISTORY     - 1935     MONUMENTED       CGS
 JV4816
 JV4816                          STATION DESCRIPTION
 JV4816
 JV4816'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV4816'STATION MADIX IS LOCATED ON THE MASON-DIXON LINE BETWEEN PENNSYLVANIA
 JV4816'AND MARYLAND 11.9 METERS E OF CENTER LINE OF U.S. HIGHWAY 222,
 JV4816'12 PACES S OF CENTER OF DIRT T-ROAD, 1.2 METERS E OF 7-FOOT
 JV4816'TRIANGULAR BOUNDARY MONUMENT, MARKED MASON-DIXON LINE,
 JV4816'PENNSYLVANIA, MARYLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1390 ***********************************************************************
 JW1390  DESIGNATION -  BOUNDARY MONUMENT 130 MD PA
 JW1390  PID         -  JW1390
 JW1390  STATE/COUNTY-  MD/WASHINGTON
 JW1390  COUNTRY     -  US
 JW1390  USGS QUAD   -  HANCOCK (2016)
 JW1390
 JW1390                         *CURRENT SURVEY CONTROL
 JW1390  ______________________________________________________________________
 JW1390* NAD 83(1991) POSITION- 39 43 21.01015(N) 078 14 12.65950(W)   ADJUSTED
 JW1390* NAVD 88 ORTHO HEIGHT -   218.    (meters)      715.    (feet) SCALED
 JW1390  ______________________________________________________________________
 JW1390  GEOID HEIGHT    -        -33.881 (meters)                     GEOID18
 JW1390  LAPLACE CORR    -         -5.10  (seconds)                    DEFLEC18
 JW1390  HORZ ORDER      -  SECOND
 JW1390
 JW1390.The horizontal coordinates were established by classical geodetic methods
 JW1390.and adjusted by the National Geodetic Survey in January 1992.
 JW1390
 JW1390.The orthometric height was scaled from a topographic map.
 JW1390
 JW1390.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1390.GEOID18 height accuracy estimate available here.
 JW1390
 JW1390.Click photographs - Photos may exist for this station.
 JW1390
 JW1390.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1390
 JW1390. The following values were computed from the NAD 83(1991) position.
 JW1390
 JW1390;                    North         East     Units Scale Factor Converg.
 JW1390;SPC MD       -   228,938.007   293,951.307   MT  1.00005905   -0 46 34.6
 JW1390;SPC MD       -   751,107.44    964,405.25   sFT  1.00005905   -0 46 34.6
 JW1390;SPC PA S     -    43,326.717   558,256.770   MT  1.00003965   -0 18 57.1
 JW1390;SPC PA S     -   142,147.74  1,831,547.42   sFT  1.00003965   -0 18 57.1
 JW1390;SPC WV N     -   136,480.609   708,290.791   MT  0.99994216   +0 48 20.2
 JW1390;SPC WV N     -   447,770.13  2,323,784.04   sFT  0.99994216   +0 48 20.2
 JW1390;UTM  17      - 4,400,609.582   736,830.645   MT  1.00029059   +1 45 60.0
 JW1390
 JW1390!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1390!SPC MD       -   0.99997115  x   1.00005905  =   1.00003019
 JW1390!SPC PA S     -   0.99997115  x   1.00003965  =   1.00001079
 JW1390!SPC WV N     -   0.99997115  x   0.99994216  =   0.99991331
 JW1390!UTM  17      -   0.99997115  x   1.00029059  =   1.00026173
 JW1390
 JW1390:                Primary Azimuth Mark                     Grid Az
 JW1390:SPC MD       -  BOUNDARY MONUMENT 130 AZ MK              253 19 13.6
 JW1390:SPC PA S     -  BOUNDARY MONUMENT 130 AZ MK              252 51 36.1
 JW1390:SPC WV N     -  BOUNDARY MONUMENT 130 AZ MK              251 44 18.8
 JW1390:UTM  17      -  BOUNDARY MONUMENT 130 AZ MK              250 46 39.0
 JW1390
 JW1390_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQE3683000609(NAD 83)
 JW1390
 JW1390|---------------------------------------------------------------------|
 JW1390| PID    Reference Object                     Distance      Geod. Az  |
 JW1390|                                                           dddmmss.s |
 JW1390| CK6719 BOUNDARY MONUMENT 130 RM 1           16.703 METERS 12547     |
 JW1390| CK6720 BOUNDARY MONUMENT 130 RM 2           19.419 METERS 21716     |
 JW1390| JW1394 SIDELING HILL WU STA 17 TWR         APPROX. 6.5 KM 2355408.3 |
 JW1390| CK6718 BOUNDARY MONUMENT 130 AZ MK                        2523239.0 |
 JW1390|---------------------------------------------------------------------|
 JW1390
 JW1390                          SUPERSEDED SURVEY CONTROL
 JW1390
 JW1390  NAD 83(1986)-  39 43 21.01223(N)    078 14 12.66476(W) AD(       ) 2
 JW1390  NAD 27      -  39 43 20.67800(N)    078 14 13.63600(W) AD(       ) 2
 JW1390
 JW1390.Superseded values are not recommended for survey control.
 JW1390
 JW1390.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1390.See file dsdata.pdf to determine how the superseded data were derived.
 JW1390
 JW1390_MARKER: DS = TRIANGULATION STATION DISK
 JW1390_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1390_STAMPING: BOUNDARY MONUMENT 130 1955
 JW1390_MARK LOGO: CGS
 JW1390_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1390+STABILITY: SURFACE MOTION
 JW1390
 JW1390  HISTORY     - Date     Condition        Report By
 JW1390  HISTORY     - 1955     MONUMENTED       CGS
 JW1390
 JW1390                          STATION DESCRIPTION
 JW1390
 JW1390'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1390'THE STATION IS AN ORIGINAL SANDSTONE POST MARKING THE
 JW1390'MASON-DIXON LINE.  IT IS 3-1/2 MILES NORTHWEST OF HANCOCK,
 JW1390'MARYLAND, 3/4 MILE WEST OF TONOLOWAY CREEK, 57 FEET
 JW1390'WEST-SOUTHWEST OF TELEPHONE POLE NO. 2830 AND 18 FEET SOUTH OF
 JW1390'THE CENTER OF A PIPELINE CLEARING.
 JW1390'
 JW1390'TO REACH THE STATION FROM THE STOP AND GO LIGHT AT THE NORTH
 JW1390'END OF THE POTOMAC RIVER BRIDGE IN HANCOCK, GO NORTH ON
 JW1390'U.S. HIGHWAY 522 FOR 0.15 MILE TO A PAVED SIDEROAD ON THE LEFT,
 JW1390'TURN SHARP LEFT AND GO WESTERLY ON THE MAIN ROAD FOR 2.7 MILES
 JW1390'TO A CROSS ROAD, (THIS IS SANDYMILE ROAD), CROSS THIS ROAD AND
 JW1390'CONTINUE WESTERLY FOR 1.0 MILE TO A T-JUNCTION, TURN RIGHT AND
 JW1390'GO NORTH FOR 0.1 MILE TO THE AZIMUTH MARK ON THE LEFT AS
 JW1390'DESCRIBED, CONTINUE NORTH FOR 0.15 MILE TO A FORK, TAKE RIGHT
 JW1390'ROAD AND GO EAST FOR 0.35 MILE TO THE STATION ON THE LEFT.
 JW1390'
 JW1390'THE STATION MARK IS A 12 IN X 12 IN SANDSTONE POST WHICH
 JW1390'PROJECTS 10 INCHES.  A STANDARD DISK IS CEMENTED IN A DRILL HOLE
 JW1390'AT THE TOP OF THE POST, AND THE DISK IS STAMPED BOUNDARY
 JW1390'MONUMENT 130 1955.
 JW1390'
 JW1390'REFERENCE MARK 1 IS 33 FEET SOUTH OF THE MARYLAND-PENNSYLVANIA
 JW1390'STATE LINE.  THE MARK PROJECTS 3 INCHES, AND THE DISK IS STAMPED
 JW1390'BOUNDARY MONUMENT 130 NO 1 1955.
 JW1390'
 JW1390'REFERENCE MARK 2 IS 50 FEET SOUTH OF THE STATE LINE.  THE MARK
 JW1390'PROJECTS 3 INCHES, AND THE DISK IS STAMPED BOUNDARY MONUMENT 130
 JW1390'NO 2 1955.
 JW1390'
 JW1390'THE AZIMUTH MARK IS 19 FEET WEST OF THE CENTER OF THE ROAD AND
 JW1390'2 FEET NORTH OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK
 JW1390'PROJECTS 5 INCHES, AND THE DISK IS STAMPED BOUNDARY MONUMENT 130
 JW1390'1955.
 JW1390'
 JW1390'HEIGHT OF LIGHT ABOVE STATION MARK 14 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3510 ***********************************************************************
 JU3510  DESIGNATION -  BOUNDARY MONUMENT 64 1976
 JU3510  PID         -  JU3510
 JU3510  STATE/COUNTY-  MD/CECIL
 JU3510  COUNTRY     -  US
 JU3510  USGS QUAD   -  CECILTON (2016)
 JU3510
 JU3510                         *CURRENT SURVEY CONTROL
 JU3510  ______________________________________________________________________
 JU3510* NAD 83(1991) POSITION- 39 23 11.59891(N) 075 46 02.34721(W)   NO CHECK
 JU3510* NAVD 88 ORTHO HEIGHT -    17.0   (meters)       56.    (feet) VERTCON3
 JU3510  ______________________________________________________________________
 JU3510  GEOID HEIGHT    -        -33.558 (meters)                     GEOID18
 JU3510  LAPLACE CORR    -         -1.16  (seconds)                    DEFLEC18
 JU3510  HORZ ORDER      -  THIRD
 JU3510
 JU3510.The horizontal coordinates were established by classical geodetic methods
 JU3510.and adjusted by the National Geodetic Survey in January 1992.
 JU3510
 JU3510.No horizontal observational check was made to the station.
 JU3510
 JU3510.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3510.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3510
 JU3510.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3510.GEOID18 height accuracy estimate available here.
 JU3510
 JU3510.Click photographs - Photos may exist for this station.
 JU3510
 JU3510.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3510
 JU3510. The following values were computed from the NAD 83(1991) position.
 JU3510
 JU3510;                    North         East     Units Scale Factor Converg.
 JU3510;SPC MD       -   191,636.832   506,194.950   MT  0.99998952   +0 46 25.2
 JU3510;SPC MD       -   628,728.51  1,660,741.27   sFT  0.99998952   +0 46 25.2
 JU3510;UTM  18      - 4,359,955.249   433,919.189   MT  0.99965376   -0 29 12.9
 JU3510
 JU3510!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3510!SPC MD       -   1.00000260  x   0.99998952  =   0.99999212
 JU3510!UTM  18      -   1.00000260  x   0.99965376  =   0.99965636
 JU3510
 JU3510_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3391959955(NAD 83)
 JU3510
 JU3510                          SUPERSEDED SURVEY CONTROL
 JU3510
 JU3510  NAD 83(1986)-  39 23 11.59111(N)    075 46 02.35581(W) AD(       ) 3
 JU3510  NAD 27      -  39 23 11.18724(N)    075 46 03.59480(W) AD(       ) 3
 JU3510  NGVD 29 (07/19/86)   17.2    (m)           56.     (f) VERT ANG       
 JU3510
 JU3510.Superseded values are not recommended for survey control.
 JU3510
 JU3510.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3510.See file dsdata.pdf to determine how the superseded data were derived.
 JU3510
 JU3510_MARKER: DD = SURVEY DISK
 JU3510_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3510_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3510+STABILITY: SURFACE MOTION
 JU3510
 JU3510  HISTORY     - Date     Condition        Report By
 JU3510  HISTORY     - 1976     MONUMENTED       NGS
 JU3510  HISTORY     - 19960420 MARK NOT FOUND   USPSQD
 JU3510
 JU3510                          STATION DESCRIPTION
 JU3510
 JU3510'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3510'A SEARCH WAS MADE FOR THE OLD MARYLAND-DELAWARE BOUNDARY MONUMENT
 JU3510'AND NO EVIDENCE OF IT WAS FOUND.  IT WAS REPORTED THAT THE OLD
 JU3510'MONUMENT WAS REMOVED FROM THE OLD WOODED FENCE LINE AND BURIED
 JU3510'UNDER RUBBISH ON THE EAST SIDE OF THE ROAD.  A NEW
 JU3510'MARYLAND-DELAWARE MARKER WAS ESTABLISHED TO THE SOUTH OF
 JU3510'TRIANGULATION STATION TOWNSEND AND OUT OF THE CULTIVATED
 JU3510'FIELD WHERE THE COMPUTED POSITION WAS FOUND TO BE.
 JU3510'
 JU3510'THE MARKER IS LOCATED ABOUT 10 MILES NORTHWEST OF DOVER, 5 MILES
 JU3510'SOUTHWEST OF MIDDLETOWN, AND 4 MILES WEST OF TOWNSEND.  THE
 JU3510'PROPERTY IS OWNED BY MR. C. M. CANTON, ROUTE 896, TOWSON, MARYLAND.
 JU3510'
 JU3510'TO REACH FROM THE MAIN INTERSECTION IN THE SMALL VILLAGE OF
 JU3510'SASSAFRAS, GO EAST ON COLDWELL ROAD FOR 2.2 MILES TO A SIDE ROAD
 JU3510'LEFT ABOUT 50 FEET BEFORE REACHING A CROSSROADS.  TURN LEFT AND
 JU3510'GO NORTH ON STATE LINE ROAD FOR 1.4 MILE TO A FARM ROAD LEFT
 JU3510'AND THE MARKER IN THE NORTHWEST ANGLE OF THE INTERSECTION.
 JU3510'
 JU3510'THE SURFACE MARK IS A MARYLAND-DELAWARE BOUNDARY DISK STAMPED
 JU3510'N-S NO. 64 1976, SET IN THE TOP OF A 12-INCH ROUND CONCRETE
 JU3510'MONUMENT WHICH IS FLUSH WITH THE SURFACE.  THE SUB-SURFACE MARKER
 JU3510'IS A SIMILAR DISK SET IN THE TOP OF AN 8-INCH MASS OF CONCRETE
 JU3510'WHICH IS 40 INCHES BELOW THE SURFACE.  THEY ARE 25 FEET WEST OF
 JU3510'THE CENTER OF STATE LINE ROAD, 25 FEET NORTH OF THE CENTER OF
 JU3510'THE FARM ROAD, 3.5 FEET NORTH OF A TELEPHONE CABLE MARKER POLE
 JU3510'NUMBERED WH 72-100, AND 1.7 FEET NORTH OF A WITNESS POST.
 JU3510'
 JU3510'FOR ADDITIONAL INFORMATION, SEE DESCRIPTION FOR TRIANGULATION
 JU3510'STATION TOWNSEND 1961.
 JU3510
 JU3510                          STATION RECOVERY (1996)
 JU3510
 JU3510'RECOVERY NOTE BY US POWER SQUADRON 1996
 JU3510'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3515 ***********************************************************************
 JU3515  DESIGNATION -  BOUNDARY MONUMENT 67 DEL MD
 JU3515  PID         -  JU3515
 JU3515  STATE/COUNTY-  MD/CECIL
 JU3515  COUNTRY     -  US
 JU3515  USGS QUAD   -  CECILTON (2016)
 JU3515
 JU3515                         *CURRENT SURVEY CONTROL
 JU3515  ______________________________________________________________________
 JU3515* NAD 83(1991) POSITION- 39 25 54.81813(N) 075 46 15.50964(W)   ADJUSTED
 JU3515* NAVD 88 ORTHO HEIGHT -    20.2   (meters)       66.    (feet) VERTCON3
 JU3515  ______________________________________________________________________
 JU3515  GEOID HEIGHT    -        -33.506 (meters)                     GEOID18
 JU3515  LAPLACE CORR    -         -1.06  (seconds)                    DEFLEC18
 JU3515  HORZ ORDER      -  SECOND
 JU3515
 JU3515.The horizontal coordinates were established by classical geodetic methods
 JU3515.and adjusted by the National Geodetic Survey in January 1992.
 JU3515
 JU3515.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3515.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3515
 JU3515.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3515.GEOID18 height accuracy estimate available here.
 JU3515
 JU3515.Click photographs - Photos may exist for this station.
 JU3515
 JU3515.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3515
 JU3515. The following values were computed from the NAD 83(1991) position.
 JU3515
 JU3515;                    North         East     Units Scale Factor Converg.
 JU3515;SPC MD       -   196,665.744   505,812.220   MT  0.99999688   +0 46 17.0
 JU3515;SPC MD       -   645,227.53  1,659,485.59   sFT  0.99999688   +0 46 17.0
 JU3515;UTM  18      - 4,364,989.657   433,647.300   MT  0.99965421   -0 29 23.0
 JU3515
 JU3515!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3515!SPC MD       -   1.00000209  x   0.99999688  =   0.99999897
 JU3515!UTM  18      -   1.00000209  x   0.99965421  =   0.99965630
 JU3515
 JU3515_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3364764989(NAD 83)
 JU3515
 JU3515                          SUPERSEDED SURVEY CONTROL
 JU3515
 JU3515  NAD 83(1986)-  39 25 54.81067(N)    075 46 15.51781(W) AD(       ) 2
 JU3515  NAD 27      -  39 25 54.41060(N)    075 46 16.75560(W) AD(       ) 2
 JU3515  NGVD 29 (07/19/86)   20.4    (m)           67.     (f) VERT ANG       
 JU3515
 JU3515.Superseded values are not recommended for survey control.
 JU3515
 JU3515.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3515.See file dsdata.pdf to determine how the superseded data were derived.
 JU3515
 JU3515_MARKER: V = STONE MONUMENT
 JU3515_SETTING: 0 = UNSPECIFIED SETTING
 JU3515_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3515
 JU3515  HISTORY     - Date     Condition        Report By
 JU3515  HISTORY     - 1961     MONUMENTED       CGS
 JU3515  HISTORY     - 20070420 POOR             GEOCAC
 JU3515
 JU3515                          STATION DESCRIPTION
 JU3515
 JU3515'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3515'THE STATION IS LOCATED ABOUT 3.0 MILES WEST-SOUTHWEST OF
 JU3515'MIDDLETOWN, 1.0 MILE NORTH OF WARWICK, IN A GRASSY AREA AND ON
 JU3515'PROPERTY OWNED BY MR. HORACE POWELL.  IT IS A 11-INCH SQUARE
 JU3515'LIMESTONE MONUMENT WITH THE LETTER M ON THE WEST SIDE AND P ON THE
 JU3515'EAST SIDE PROJECTING ABOUT 20 INCHES ABOVE THE SURFACE OF THE
 JU3515'GROUND.  THE EDGES ARE SLIGHTLY CHIPPED BUT IN GENERAL GOOD
 JU3515'CONDITION AND IT LEANS TO THE SOUTH-SOUTHEAST.  IT IS 116.6
 JU3515'FEET NORTH OF A STANDARD METAL WITNESS POST AND MARKER, 116.0
 JU3515'FEET NORTH OF AN EAST AND WEST FENCELINE AND 163.0 FEET NORTHWEST
 JU3515'OF A LONE ELM TREE.
 JU3515'
 JU3515'TO REACH STATION WARWICK FROM THE POST OFFICE IN WARWICK, GO EAST
 JU3515'ON STATE HIGHWAY 282 FOR 1.0 MILE TO A GRAVELED LANE LEFT, JUST
 JU3515'BEFORE REACHING THE JUNCTION OF U.S. HIGHWAY 301, TURN LEFT AND
 JU3515'GO NORTH ON THE GRAVELED LANE FOR 0.4 MILE TO THE AZIMUTH MARK
 JU3515'ON THE LEFT, CONTINUE NORTH ON THE GRAVELED LANE FOR 0.15 MILE
 JU3515'TO A GATE ON THE LEFT, AT THE NORTH END OF THE BARN LOT, TURN
 JU3515'LEFT AND GO THROUGH THE GATE BETWEEN TWO BUILDINGS AND CONTINUE
 JU3515'ACROSS THE PASTURE FIELD FOR 0.15 MILE TO A LARGE LONE TREE AND
 JU3515'THE STATION MARK.
 JU3515'
 JU3515'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION WARWICK,
 JU3515'DISTANCE BEING 19.778 METERS AND (64.889 FEET) NORTH OF STATION
 JU3515'WARWICK.
 JU3515
 JU3515                          STATION RECOVERY (2007)
 JU3515
 JU3515'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3515'THE STONE NOW PROJECTS ABOUT 31 INCHES, LEANS ABOUT 12 DEGREES TO THE
 JU3515'SOUTHWEST, AND APPEARS TO HAVE BEEN ROTATED ABOUT 15 DEGREES OUT OF
 JU3515'ALIGNMENT WITH THE STATE BOUNDARY LINE.  THE STONE IS DAMAGED ON ALL
 JU3515'SIDES AS IF BY CHAINS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3516 ***********************************************************************
 JU3516  DESIGNATION -  BOUNDARY MONUMENT 68 DEL MD
 JU3516  PID         -  JU3516
 JU3516  STATE/COUNTY-  MD/CECIL
 JU3516  COUNTRY     -  US
 JU3516  USGS QUAD   -  CECILTON (2016)
 JU3516
 JU3516                         *CURRENT SURVEY CONTROL
 JU3516  ______________________________________________________________________
 JU3516* NAD 83(1991) POSITION- 39 26 47.19511(N) 075 46 19.77529(W)   ADJUSTED
 JU3516* NAVD 88 ORTHO HEIGHT -    12.6   (meters)       41.    (feet) VERTCON3
 JU3516  ______________________________________________________________________
 JU3516  GEOID HEIGHT    -        -33.489 (meters)                     GEOID18
 JU3516  LAPLACE CORR    -         -1.06  (seconds)                    DEFLEC18
 JU3516  HORZ ORDER      -  SECOND
 JU3516
 JU3516.The horizontal coordinates were established by classical geodetic methods
 JU3516.and adjusted by the National Geodetic Survey in January 1992.
 JU3516
 JU3516.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3516.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3516
 JU3516.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3516.GEOID18 height accuracy estimate available here.
 JU3516
 JU3516.Click photographs - Photos may exist for this station.
 JU3516
 JU3516.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3516
 JU3516. The following values were computed from the NAD 83(1991) position.
 JU3516
 JU3516;                    North         East     Units Scale Factor Converg.
 JU3516;SPC MD       -   198,279.526   505,688.487   MT  0.99999938   +0 46 14.3
 JU3516;SPC MD       -   650,522.08  1,659,079.64   sFT  0.99999938   +0 46 14.3
 JU3516;UTM  18      - 4,366,605.216   433,559.147   MT  0.99965435   -0 29 26.2
 JU3516
 JU3516!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3516!SPC MD       -   1.00000328  x   0.99999938  =   1.00000266
 JU3516!UTM  18      -   1.00000328  x   0.99965435  =   0.99965763
 JU3516
 JU3516_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3355966605(NAD 83)
 JU3516
 JU3516                          SUPERSEDED SURVEY CONTROL
 JU3516
 JU3516  NAD 83(1986)-  39 26 47.18773(N)    075 46 19.78328(W) AD(       ) 2
 JU3516  NAD 27      -  39 26 46.78650(N)    075 46 21.02020(W) AD(       ) 2
 JU3516  NGVD 29 (07/19/86)   12.8    (m)           42.     (f) VERT ANG       
 JU3516
 JU3516.Superseded values are not recommended for survey control.
 JU3516
 JU3516.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3516.See file dsdata.pdf to determine how the superseded data were derived.
 JU3516
 JU3516_MARKER: 71 = BOUNDARY MONUMENT
 JU3516_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3516+SATELLITE: SATELLITE OBSERVATIONS - October 12, 2004
 JU3516
 JU3516  HISTORY     - Date     Condition        Report By
 JU3516  HISTORY     - 1961     FIRST OBSERVED   CGS
 JU3516  HISTORY     - 20041012 GOOD             GEOCAC
 JU3516
 JU3516                          STATION DESCRIPTION
 JU3516
 JU3516'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3516'STATION IS A MASON-DIXON STATE LINE MONUMENT, LOCATED IN THE
 JU3516'FENCE LINE NORTH OF THE STATION.  IT PROJECTS ABOUT 30 INCHES
 JU3516'ABOVE THE SURFACE OF THE GROUND.  A SMALL CROSS WAS ETCHED AT THE
 JU3516'APPROXIMATE CENTER OF THE MONUMENT TO HOLD THE CENTER POINT TO
 JU3516'MEASURE TO AND TURN ANGLES TO.  A TRAVERSE TIE WAS MADE BETWEEN
 JU3516'STATION LEVELS AND THE BOUNDARY MONUMENT.  A TRAVERSE WAS MADE
 JU3516'TO TRIANGULATION STATION LEVELS WITH 50 METER TAPE, DISTANCE
 JU3516'BEING 92.976 FEET AND 28.339 METERS.
 JU3516
 JU3516                          STATION RECOVERY (2004)
 JU3516
 JU3516'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JU3516'STATION IS AN 11.5-INCH BY 12-INCH LIMESTONE SHAFT THAT PROJECTS 25
 JU3516'INCHES AND LEANS TO THE NORTH ABOUT 1.5 DEGREES.  IT HAS AN M CUT INTO
 JU3516'THE WEST FACE, A P CUT INTO THE EAST FACE AND A SMALL CROSS ETCHED AT
 JU3516'THE APPROXIMATE CENTER OF THE TOP.  IT IS LOCATED IS A
 JU3516'SMALL CLEARING IN A NORTH-SOUTH HEDGEROW NEAR THE NORTHEAST CORNER OF
 JU3516'THE PROPERTY AT 1753 MIDDLE NECK ROAD, CECIL COUNTY, MARYLAND.  TO
 JU3516'REACH FROM THE INTERSECTION OF MIDDLE NECK ROAD AND US HIGHWAY 301 IN
 JU3516'NEW CASTLE COUNTY, DELAWARE, GO NORTHWEST ON MIDDLE NECK ROAD FOR
 JU3516'ABOUT 1.08 MILES TO THE MARYLAND-DELAWARE BOUNDARY, CONTINUE WEST FOR
 JU3516'ABOUT 0.1 MILES TO THE GRAVEL DRIVEWAY AT THE MAILBOX FOR HOUSE NUMBER
 JU3516'1753, FOLLOW THE CIRCULAR DRIVEWAY EAST AND NORTH AROUND THE HOUSE TO
 JU3516'ITS FARTHEST NORTHEAST POINT, AND PACK NORTHEAST ACROSS THE YARD FOR
 JU3516'ABOUT 40 YARDS TO A CLEARED AREA IN THE TREE LINE AND THE STONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3518 ***********************************************************************
 JU3518  DESIGNATION -  BOUNDARY MONUMENT 69 DEL MD
 JU3518  PID         -  JU3518
 JU3518  STATE/COUNTY-  MD/CECIL
 JU3518  COUNTRY     -  US
 JU3518  USGS QUAD   -  CECILTON (2016)
 JU3518
 JU3518                         *CURRENT SURVEY CONTROL
 JU3518  ______________________________________________________________________
 JU3518* NAD 83(1991) POSITION- 39 27 39.36239(N) 075 46 23.98176(W)   ADJUSTED
 JU3518* NAVD 88 ORTHO HEIGHT -     4.8   (meters)       16.    (feet) VERTCON3
 JU3518  ______________________________________________________________________
 JU3518  GEOID HEIGHT    -        -33.471 (meters)                     GEOID18
 JU3518  LAPLACE CORR    -         -1.04  (seconds)                    DEFLEC18
 JU3518  HORZ ORDER      -  SECOND
 JU3518
 JU3518.The horizontal coordinates were established by classical geodetic methods
 JU3518.and adjusted by the National Geodetic Survey in January 1992.
 JU3518
 JU3518.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3518.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3518
 JU3518.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3518.GEOID18 height accuracy estimate available here.
 JU3518
 JU3518.Click photographs - Photos may exist for this station.
 JU3518
 JU3518.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3518
 JU3518. The following values were computed from the NAD 83(1991) position.
 JU3518
 JU3518;                    North         East     Units Scale Factor Converg.
 JU3518;SPC MD       -   199,886.871   505,566.298   MT  1.00000193   +0 46 11.6
 JU3518;SPC MD       -   655,795.51  1,658,678.76   sFT  1.00000193   +0 46 11.6
 JU3518;UTM  18      - 4,368,214.303   433,472.399   MT  0.99965449   -0 29 29.4
 JU3518
 JU3518!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3518!SPC MD       -   1.00000450  x   1.00000193  =   1.00000643
 JU3518!UTM  18      -   1.00000450  x   0.99965449  =   0.99965899
 JU3518
 JU3518_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3347268214(NAD 83)
 JU3518
 JU3518                          SUPERSEDED SURVEY CONTROL
 JU3518
 JU3518  NAD 83(1986)-  39 27 39.35517(N)    075 46 23.98958(W) AD(       ) 2
 JU3518  NAD 27      -  39 27 38.95380(N)    075 46 25.22720(W) AD(       ) 2
 JU3518  NGVD 29 (07/19/86)    5.0    (m)           16.     (f) VERT ANG       
 JU3518
 JU3518.Superseded values are not recommended for survey control.
 JU3518
 JU3518.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3518.See file dsdata.pdf to determine how the superseded data were derived.
 JU3518
 JU3518_MARKER: V = STONE MONUMENT
 JU3518_SETTING: 0 = UNSPECIFIED SETTING
 JU3518_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3518
 JU3518  HISTORY     - Date     Condition        Report By
 JU3518  HISTORY     - 1961     MONUMENTED       CGS
 JU3518
 JU3518                          STATION DESCRIPTION
 JU3518
 JU3518'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3518'THE STATION IS LOCATED ABOUT 3.0 MILES NORTH OF WARWICK, MARYLAND,
 JU3518'3.0 MILES NORTHWEST OF MIDDLETOWN, DELAWARE, 47.0 FEET NORTH OF
 JU3518'THE CENTERLINE OF A WOODS ROAD AND 25.0 FEET EAST OF AN 18-INCH
 JU3518'TRIANGULAR BLAZED PINE TREE.
 JU3518'
 JU3518'TO REACH STATION CARTER FROM THE JUNCTION OF STATE HIGHWAY 299, 896
 JU3518'AND THE INTERSECTION OF BROAD AND MAIN STREET IN MIDDLETOWN,
 JU3518'DELAWARE.  GO WEST ON MAIN STREET AND STATE HIGHWAY 299 FOR 0.2
 JU3518'MILE TO THE JUNCTION OF U.S. HIGHWAY 301.  CONTINUE WEST ON
 JU3518'STATE HIGHWAY 299 AND U.S. HIGHWAY 301 FOR 0.4 MILE TO A SIDE
 JU3518'ROAD ON THE NORTHWEST SIDE OF THE HIGHWAY.  TURN RIGHT AND GO
 JU3518'NORTHWEST ON A BLACKTOP ROAD FOR 3.0 MILES TO A FORK AT THE
 JU3518'BOHEMIA MILLS POND.  TAKE THE LEFT HAND FORK AND GO SOUTH ON A
 JU3518'BLACKTOP ROAD FOR 0.3 MILE TO A ROAD INTO THE WOODS ON THE
 JU3518'LEFT JUST BEFORE REACHING A BRIDGE.  TURN LEFT, EAST, INTO THE
 JU3518'WOODS, PASSING THROUGH A GATE, FOR ABOUT 115.0 FEET, THENCE
 JU3518'NORTH FOR ABOUT 95.0 FEET TO THE STATION.
 JU3518'
 JU3518'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION CARTER,
 JU3518'DISTANCE BEING 49.087 FEET AND 14.962 METERS SOUTH-SOUTHEAST OF
 JU3518'STATION CARTER.  THE MONUMENT IS A 12-INCH SQUARE STONE MONUMENT
 JU3518'WITH THE LETTER M AND P INSCRIBED ON THE WEST AND EAST SIDE,
 JU3518'PROJECTING ABOUT 30 INCHES ABOVE THE SURFACE OF THE GROUND AND
 JU3518'LEANS SLIGHTLY TO THE SOUTHWEST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3529 ***********************************************************************
 JU3529  DESIGNATION -  BOUNDARY MONUMENT 61
 JU3529  PID         -  JU3529
 JU3529  STATE/COUNTY-  MD/KENT
 JU3529  COUNTRY     -  US
 JU3529  USGS QUAD   -  MILLINGTON (2016)
 JU3529
 JU3529                         *CURRENT SURVEY CONTROL
 JU3529  ______________________________________________________________________
 JU3529* NAD 83(1991) POSITION- 39 20 41.32873(N) 075 45 50.20618(W)   NO CHECK
 JU3529* NAVD 88 ORTHO HEIGHT -    20.9   (meters)       69.    (feet) VERTCON3
 JU3529  ______________________________________________________________________
 JU3529  GEOID HEIGHT    -        -33.612 (meters)                     GEOID18
 JU3529  LAPLACE CORR    -         -1.32  (seconds)                    DEFLEC18
 JU3529  HORZ ORDER      -  THIRD
 JU3529
 JU3529.The horizontal coordinates were established by classical geodetic methods
 JU3529.and adjusted by the National Geodetic Survey in January 1992.
 JU3529
 JU3529.No horizontal observational check was made to the station.
 JU3529
 JU3529.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3529.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3529
 JU3529.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3529.GEOID18 height accuracy estimate available here.
 JU3529
 JU3529.Click photographs - Photos may exist for this station.
 JU3529
 JU3529.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3529
 JU3529. The following values were computed from the NAD 83(1991) position.
 JU3529
 JU3529;                    North         East     Units Scale Factor Converg.
 JU3529;SPC MD       -   187,006.980   506,548.218   MT  0.99998329   +0 46 32.8
 JU3529;SPC MD       -   613,538.73  1,661,900.28   sFT  0.99998329   +0 46 32.8
 JU3529;UTM  18      - 4,355,320.290   434,170.451   MT  0.99965336   -0 29 03.7
 JU3529
 JU3529!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3529!SPC MD       -   1.00000200  x   0.99998329  =   0.99998529
 JU3529!UTM  18      -   1.00000200  x   0.99965336  =   0.99965536
 JU3529
 JU3529_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3417055320(NAD 83)
 JU3529
 JU3529                          SUPERSEDED SURVEY CONTROL
 JU3529
 JU3529  NAD 83(1986)-  39 20 41.32069(N)    075 45 50.21506(W) AD(       ) 3
 JU3529  NAD 27      -  39 20 40.91773(N)    075 45 51.45531(W) AD(       ) 3
 JU3529  NGVD 29 (07/19/86)   21.1    (m)           69.     (f) VERT ANG       
 JU3529
 JU3529.Superseded values are not recommended for survey control.
 JU3529
 JU3529.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3529.See file dsdata.pdf to determine how the superseded data were derived.
 JU3529
 JU3529_MARKER: DU = BOUNDARY MARKER
 JU3529_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3529_STAMPING: N-S NO. 61 1976
 JU3529_MARK LOGO: NGS
 JU3529_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3529+STABILITY: SURFACE MOTION
 JU3529
 JU3529  HISTORY     - Date     Condition        Report By
 JU3529  HISTORY     - 1976     MONUMENTED       NGS
 JU3529
 JU3529                          STATION DESCRIPTION
 JU3529
 JU3529'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3529'A SEARCH WAS MADE FOR THE OLD MARYLAND-DELAWARE BOUNDARY MONUMENT
 JU3529'AND NO EVIDENCE OF IT WAS FOUND.  IT IS BELIEVED THE OLD STONE
 JU3529'WAS DESTROYED OR BURIED DURING THE CONSTRUCTION OF THE RAILROAD
 JU3529'WHICH IS VERY NEAR THE LOCATION WHERE THE OLD MONUMENT WAS
 JU3529'LOCATED.  THE COMPUTED POSITION OF THE BOUNDARY WAS MARKED AT
 JU3529'THIS DATE.
 JU3529'
 JU3529'THE MARKER IS LOCATED ABOUT 8-1/2 MILES NORTHWEST OF SMYRNA,
 JU3529'1-1/2 MILES SOUTHWEST OF VANDYKE, AND 1 MILE NORTHEAST OF
 JU3529'GOLTS.  IT IS ON THE BOUNDARY LINE OF FOUR PROPERTIES, ONE OF
 JU3529'WHICH IS MR. WILLIAM F. SMITH, BOX 78, NEW CASTLE,
 JU3529'DELAWARE.  ANOTHER PROPERTY OWNER IS MR. ERWIN BROWN.
 JU3529'
 JU3529'TO REACH FROM THE GENERAL STORE IN GOLTS, GO NORTH ON MAIN STREET
 JU3529'FOR 0.1 MILE TO A T-INTERSECTION.  TURN RIGHT, GO ON A PAVED ROAD
 JU3529'FOR 0.75 MILE TO A SIDE ROAD RIGHT.  TURN RIGHT, GO EAST FOR 0.65
 JU3529'MILE TO A SIDE ROAD RIGHT JUST BEFORE A RAILROAD CROSSING.  TURN
 JU3529'RIGHT, GO SOUTHWEST ON A DIRT ROAD FOR 0.15 TO THE RAILROAD AND
 JU3529'END OF TRUCK TRAVEL.  PACK SOUTHWEST ALONG RAILROAD FOR ABOUT
 JU3529'0.2 MILE TO THE MARKER ON THE RIGHT.
 JU3529'
 JU3529'THE SURFACE AND SUB-SURFACE MARKER IS A MARYLAND-DELAWARE
 JU3529'BOUNDARY DISK STAMPED N-S NO. 61 1976.  THE SURFACE DISK IS SET
 JU3529'IN A 10-INCH ROUND MONUMENT PROJECTING 6-INCHES.  THE SUB-SURFACE
 JU3529'IS SET IN AN 8-INCH MASS OF CONCRETE 36 INCHES BELOW THE
 JU3529'SURFACE.  THEY ARE 26 FEET NORTHWEST OF NORTHWEST RAIL OF
 JU3529'RAILROAD TRACKS, 11 FEET EAST OF AN 18-INCH POPLAR TREE, AND 2
 JU3529'FEET SOUTH OF A WITNESS POST.
 JU3529'
 JU3529'FOR ADDITIONAL INFORMATION, SEE DESCRIPTION FOR TRIANGULATION
 JU3529'STATION GOLTS 1961.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3530 ***********************************************************************
 JU3530  DESIGNATION -  BOUNDARY MONUMENT 63
 JU3530  PID         -  JU3530
 JU3530  STATE/COUNTY-  MD/KENT
 JU3530  COUNTRY     -  US
 JU3530  USGS QUAD   -  MILLINGTON (2016)
 JU3530
 JU3530                         *CURRENT SURVEY CONTROL
 JU3530  ______________________________________________________________________
 JU3530* NAD 83(1991) POSITION- 39 22 26.02273(N) 075 45 58.66313(W)   ADJUSTED
 JU3530* NAVD 88 ORTHO HEIGHT -    21.1   (meters)       69.    (feet) VERTCON3
 JU3530  ______________________________________________________________________
 JU3530  GEOID HEIGHT    -        -33.574 (meters)                     GEOID18
 JU3530  LAPLACE CORR    -         -1.11  (seconds)                    DEFLEC18
 JU3530  HORZ ORDER      -  SECOND
 JU3530
 JU3530.The horizontal coordinates were established by classical geodetic methods
 JU3530.and adjusted by the National Geodetic Survey in January 1992.
 JU3530
 JU3530.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3530.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3530
 JU3530.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3530.GEOID18 height accuracy estimate available here.
 JU3530
 JU3530.Click photographs - Photos may exist for this station.
 JU3530
 JU3530.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3530
 JU3530. The following values were computed from the NAD 83(1991) position.
 JU3530
 JU3530;                    North         East     Units Scale Factor Converg.
 JU3530;SPC MD       -   190,232.614   506,302.100   MT  0.99998757   +0 46 27.5
 JU3530;SPC MD       -   624,121.50  1,661,092.81   sFT  0.99998757   +0 46 27.5
 JU3530;UTM  18      - 4,358,549.485   433,995.397   MT  0.99965364   -0 29 10.1
 JU3530
 JU3530!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3530!SPC MD       -   1.00000196  x   0.99998757  =   0.99998953
 JU3530!UTM  18      -   1.00000196  x   0.99965364  =   0.99965560
 JU3530
 JU3530_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3399558549(NAD 83)
 JU3530
 JU3530                          SUPERSEDED SURVEY CONTROL
 JU3530
 JU3530  NAD 83(1986)-  39 22 26.01484(N)    075 45 58.67160(W) AD(       ) 2
 JU3530  NAD 27      -  39 22 25.61041(N)    075 45 59.91103(W) AD(       ) 2
 JU3530  NGVD 29 (03/25/91)   21.3    (m)           70.     (f) VERT ANG       
 JU3530  NGVD 29 (07/19/86)   21.4    (m)           70.     (f) VERT ANG       
 JU3530
 JU3530.Superseded values are not recommended for survey control.
 JU3530
 JU3530.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3530.See file dsdata.pdf to determine how the superseded data were derived.
 JU3530
 JU3530_MARKER: U = CONCRETE POST
 JU3530_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JU3530_SP_SET: OBJECT IMBEDDED IN GROUND
 JU3530_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU3530_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3530_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3530+SATELLITE: SATELLITE OBSERVATIONS - July 11, 2013
 JU3530
 JU3530  HISTORY     - Date     Condition        Report By
 JU3530  HISTORY     - 1976     MONUMENTED       NGS
 JU3530  HISTORY     - 1987     SEE DESCRIPTION  NGS
 JU3530  HISTORY     - 20130711 GOOD             DELCOS
 JU3530
 JU3530                          STATION DESCRIPTION
 JU3530
 JU3530'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3530'THE OLD MONUMENT WAS RECOVERED AND FOUND IN A GOOD UPRIGHT
 JU3530'POSITION.  THE TRAVERSE DISTANCE TO TRIANGULATION STATION COLDWELL
 JU3530'WAS CHECKED.  THE OLD MONUMENT WAS 5.7 FEET EAST OF THE BOUNDARY
 JU3530'LINE AND IT WAS RESET ON THE TRUE BOUNDARY LINE AT THIS DATE.
 JU3530'
 JU3530'THE STATION IS LOCATED ABOUT 2 AIRLINE MILES EAST OF SASSAFRAS,
 JU3530'4 MILES WEST-SOUTHWEST OF TOWSON, AND ON PROPERTY OWNED BY
 JU3530'MR. BARRI BUTLON, RT. 2, TOWSON, DELAWARE.
 JU3530'
 JU3530'TO REACH FROM THE MAIN CROSSROADS IN SASSAFRAS, GO EAST ON
 JU3530'COLDWELL ROAD FOR 2.2 MILES TO A SIDE ROAD LEFT ABOUT 50 FEET
 JU3530'BEFORE REACHING A CROSSROADS.  TURN LEFT AND GO NORTH ON STATE
 JU3530'LINE ROAD FOR 0.5 MILE TO THE MONUMENT ON THE LEFT.
 JU3530'
 JU3530'THE SURFACE MARK IS A 12-INCH SQUARE LIMESTONE MONUMENT WITH A
 JU3530'P CARVED ON THE EAST SIDE AND AN M CARVED ON THE WEST SIDE.  IT
 JU3530'IS SET IN A LARGE CONCRETE BASE AND IT PROJECTS 2 FEET.  A 1-INCH
 JU3530'CROSS ON THE APEX OF THE STONE MARKS THE POINT INTERSECTED.  THE
 JU3530'SUB-SURFACE MARKER IS A MARYLAND-DELAWARE BOUNDARY DISK STAMPED
 JU3530'N-S NO. 63 1976, SET IN AN 8-INCH MASS OF CONCRETE WHICH IS
 JU3530'38-INCHES BELOW THE SURFACE.  THEY ARE 100 YARDS NORTH OF A
 JU3530'LARGE LONE TREE ON THE WEST SIDE OF STATE LINE ROAD, 97.5 FEET
 JU3530'SOUTHWEST OF A POWERLINE POLE NUMBERED J89113, 42.6 FEET
 JU3530'NORTHWEST OF A WITNESS POST, AND 24 FEET WEST OF THE CENTER OF
 JU3530'STATE LINE ROAD.
 JU3530'
 JU3530'FOR ADDITIONAL INFORMATION, SEE DESCRIPTION FOR STATION
 JU3530'COLDWELL 1961.
 JU3530
 JU3530                          STATION RECOVERY (1987)
 JU3530
 JU3530'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 JU3530'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES NOTED BELOW --
 JU3530'THE BOUNDARY MONUMENT WAS FOUND BROKEN OFF AT ITS BASE AGAIN. IT
 JU3530'WAS AGAIN RESET BY THE MARYLAND DELAWARE BOUNDARY COMMISSIONS.  IT
 JU3530'WAS CHECKED AT THIS DATE AND FOUND TO BE VERY CLOSE TO ITS POSITION
 JU3530'AS DESCRIBED IN THE MOST RECENT INFORMATION AVAILABLE. NO NEW
 JU3530'DESCRIPTION IS REQUIRED.  A TIE WAS MADE FROM TRIANGULATION STATION
 JU3530'---COLDWELL 1961---,SEE DESCRIPTION THEREOF.
 JU3530
 JU3530                          STATION RECOVERY (2013)
 JU3530
 JU3530'RECOVERY NOTE BY DELAWARE COASTAL PROGRAM 2013
 JU3530'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3520 ***********************************************************************
 JU3520  DESIGNATION -  BOUNDARY MONUMENT 70 DEL MD
 JU3520  PID         -  JU3520
 JU3520  STATE/COUNTY-  MD/CECIL
 JU3520  COUNTRY     -  US
 JU3520  USGS QUAD   -  CECILTON (2016)
 JU3520
 JU3520                         *CURRENT SURVEY CONTROL
 JU3520  ______________________________________________________________________
 JU3520* NAD 83(1991) POSITION- 39 28 31.64800(N) 075 46 28.19358(W)   ADJUSTED
 JU3520* NAVD 88 ORTHO HEIGHT -    14.5   (meters)       48.    (feet) VERTCON3
 JU3520  ______________________________________________________________________
 JU3520  GEOID HEIGHT    -        -33.448 (meters)                     GEOID18
 JU3520  LAPLACE CORR    -         -1.01  (seconds)                    DEFLEC18
 JU3520  HORZ ORDER      -  SECOND
 JU3520
 JU3520.The horizontal coordinates were established by classical geodetic methods
 JU3520.and adjusted by the National Geodetic Survey in January 1992.
 JU3520
 JU3520.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3520.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3520
 JU3520.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3520.GEOID18 height accuracy estimate available here.
 JU3520
 JU3520.Click photographs - Photos may exist for this station.
 JU3520
 JU3520.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3520
 JU3520. The following values were computed from the NAD 83(1991) position.
 JU3520
 JU3520;                    North         East     Units Scale Factor Converg.
 JU3520;SPC MD       -   201,497.873   505,443.973   MT  1.00000455   +0 46 09.0
 JU3520;SPC MD       -   661,080.94  1,658,277.43   sFT  1.00000455   +0 46 09.0
 JU3520;UTM  18      - 4,369,827.046   433,385.601   MT  0.99965463   -0 29 32.7
 JU3520
 JU3520!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3520!SPC MD       -   1.00000298  x   1.00000455  =   1.00000753
 JU3520!UTM  18      -   1.00000298  x   0.99965463  =   0.99965761
 JU3520
 JU3520_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3338569827(NAD 83)
 JU3520
 JU3520                          SUPERSEDED SURVEY CONTROL
 JU3520
 JU3520  NAD 83(1986)-  39 28 31.64093(N)    075 46 28.20129(W) AD(       ) 2
 JU3520  NAD 27      -  39 28 31.23950(N)    075 46 29.43900(W) AD(       ) 2
 JU3520  NGVD 29 (07/19/86)   14.7    (m)           48.     (f) VERT ANG       
 JU3520
 JU3520.Superseded values are not recommended for survey control.
 JU3520
 JU3520.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3520.See file dsdata.pdf to determine how the superseded data were derived.
 JU3520
 JU3520_MARKER: V = STONE MONUMENT
 JU3520_SETTING: 0 = UNSPECIFIED SETTING
 JU3520_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3520_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3520+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2007
 JU3520
 JU3520  HISTORY     - Date     Condition        Report By
 JU3520  HISTORY     - 1961     MONUMENTED       CGS
 JU3520  HISTORY     - 20070630 GOOD             GEOCAC
 JU3520
 JU3520                          STATION DESCRIPTION
 JU3520
 JU3520'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3520'LOCATED ABOUT 4.0 MILES SOUTHEAST OF CHESAPEAKE CITY, MARYLAND
 JU3520'AND 3.5 MILES NORTHWEST OF MIDDLETOWN, DELAWARE.  IT IS 13.8 FEET
 JU3520'WEST OF A NORTH AND SOUTH FENCELINE, 13.0 FEET SOUTH-SOUTHWEST OF
 JU3520'THE CENTER OF A GATE AND FIELD ENTRANCE AND 12.0 FEET SOUTH OF
 JU3520'THE SOUTH GATE POST OF FIELD ENTRANCE.
 JU3520'
 JU3520'TO REACH STATION BOHEMIA FROM THE JUNCTION OF STATE HIGHWAY 299, 896
 JU3520'AND BROAD AND MAIN STREET IN MIDDLETOWN, DELAWARE.  GO WEST ON
 JU3520'MAIN STREET AND STATE HIGHWAY 299 FOR 0.2 MILE TO THE JUNCTION OF
 JU3520'U.S. HIGHWAY 301.  CONTINUE WEST ON U.S. HIGHWAY 301 AND STATE
 JU3520'HIGHWAY 299 FOR 0.4 MILE TO A FORK.  TAKE THE RIGHT HAND FORK AND
 JU3520'GO NORTHWEST ON A BLACKTOP ROAD FOR 3.0 MILES TO A FORK AT THE
 JU3520'BOHEMIA MILLS POND.  TAKE THE RIGHT HAND FORK AND GO NORTH ON A
 JU3520'BLACKTOP ROAD FOR 0.85 MILE TO A FORK AND A HOUSE ON THE EAST
 JU3520'SIDE OF THE ROAD.  TURN RIGHT AND GO EAST ON A FIELD ROAD
 JU3520'ALONG THE SOUTH SIDE OF AN EAST AND WEST FENCELINE THAT EXTENDS TO
 JU3520'THE ROAD ON THE SOUTH SIDE OF THE HOUSE, FOR 0.25 MILE TO A
 JU3520'LARGE OPENING IN THE WOODS TO OTHER FIELDS AND THE STATION.
 JU3520'
 JU3520'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION BOHEMIA,
 JU3520'DISTANCE BEING 86.538 FEET AND 26.377 METERS EAST OF STATION
 JU3520'BOHEMIA.  THE MONUMENT IS A 12-INCH SQUARE STONE MONUMENT WITH AN
 JU3520'UNRECOGNIZABLE COAT OF ARMS ON THE EAST AND WEST SIDE.  FUSED BY
 JU3520'CONCRETE TO THE NORTH SIDE OF THE MONUMENT IS AN 18-INCH LONG,
 JU3520'3-INCH WIDE AND 16-INCH DEEP PYRAMIDAL SHAPED CONCRETE MONUMENT
 JU3520'BEARING A BRASS, RECTANGULAR, PLATE INSCRIBED WITH INDIAN
 JU3520'TRIBAL INFORMATION, CHOPTANK AND LENAPE TRIBES, PLACED BY CECIL
 JU3520'HISTORICAL SOCIETY.  THE MONUMENT PROJECTS ABOUT 17 INCHES ABOVE
 JU3520'THE SURFACE OF THE GROUND.
 JU3520
 JU3520                          STATION RECOVERY (2007)
 JU3520
 JU3520'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3520'THE STONE IS IN GOOD CONDITION AND PROJECTS 26 INCHES.  IT IS LOCATED
 JU3520'IN A DENSELY WOODED AREA WITH THICK UNDERGROWTH ON PRIVATE RESIDENTIAL
 JU3520'PROPERTY.  TO REACH FROM EXIT 1 OFF INTERSTATE HIGHWAY 95 SOUTH OF
 JU3520'NEWARK, DE, GO SOUTH ON DELAWARE STATE HIGHWAY 896 (SOUTH
 JU3520'COLLEGE ROAD) FOR ABOUT 2.9 MILES TO THE INTERSECTION WITH US HIGHWAY
 JU3520'40 AND 301.  CONTINUE SOUTH THROUGH THE INTERSECTION, NOW ON US
 JU3520'HIGHWAY 301, FOR ABOUT 7.6 MILES TO THE INTERSECTION WITH CHURCHTOWN
 JU3520'ROAD.  TURN RIGHT AND GO SOUTHWESTERLY ON CHURCHTOWN ROAD FOR ABOUT
 JU3520'3.8 MILES TO THE STATE BOUNDARY LINE.  CONTINUE WESTERLY, NOW ON
 JU3520'CAYOTS CORNER ROAD, FOR ABOUT 0.1 MILES TO THE INTERSECTION WITH OLD
 JU3520'TELEGRAPH ROAD.  TURN LEFT AND GO SOUTH ON OLD TELEGRAPH ROAD FOR
 JU3520'ABOUT 1.4 MILES TO THE INTERSECTION WITH HORSESHOE CIRCLE.  TURN LEFT
 JU3520'
 JU3520'AND GO EAST ON HORSESHOE CIRCLE FOR ABOUT 0.2 MILES TO THE PRIVATE
 JU3520'RESIDENCE AT 99 HORSESHOE CIRCLE.  FROM THE NORTHWEST CORNER OF THE
 JU3520'HOUSE, PACK NORTH-NORTH WEST FOR ABOUT 200 FEET AND, THEN, NORTHEAST
 JU3520'FOR ABOUT 200 FEET TO THE HEAD OF A PATH AT THE EASTERN-MOST POINT OF
 JU3520'
 JU3520'A SMALL CULTIVATED FIELD.  PACK EASTERLY ALONG THE PATH INTO A WOODED
 JU3520'AREA WITH THICK UNDERGROWTH FOR ABOUT 165 FEET TO THE STONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3895 ***********************************************************************
 JU3895  DESIGNATION -  BOUNDARY MONUMENT 72 1976
 JU3895  PID         -  JU3895
 JU3895  STATE/COUNTY-  MD/CECIL
 JU3895  COUNTRY     -  US
 JU3895  USGS QUAD   -  ELKTON (2016)
 JU3895
 JU3895                         *CURRENT SURVEY CONTROL
 JU3895  ______________________________________________________________________
 JU3895* NAD 83(1991) POSITION- 39 30 24.72633(N) 075 46 37.39075(W)   NO CHECK
 JU3895* NAVD 88 ORTHO HEIGHT -    20.6   (meters)       68.    (feet) VERTCON3
 JU3895  ______________________________________________________________________
 JU3895  GEOID HEIGHT    -        -33.381 (meters)                     GEOID18
 JU3895  LAPLACE CORR    -         -0.78  (seconds)                    DEFLEC18
 JU3895  HORZ ORDER      -  THIRD
 JU3895
 JU3895.The horizontal coordinates were established by classical geodetic methods
 JU3895.and adjusted by the National Geodetic Survey in January 1992.
 JU3895
 JU3895.No horizontal observational check was made to the station.
 JU3895
 JU3895.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3895.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3895
 JU3895.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3895.GEOID18 height accuracy estimate available here.
 JU3895
 JU3895.Click photographs - Photos may exist for this station.
 JU3895
 JU3895.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3895
 JU3895. The following values were computed from the NAD 83(1991) position.
 JU3895
 JU3895;                    North         East     Units Scale Factor Converg.
 JU3895;SPC MD       -   204,982.001   505,177.452   MT  1.00001044   +0 46 03.2
 JU3895;SPC MD       -   672,511.78  1,657,403.02   sFT  1.00001044   +0 46 03.2
 JU3895;UTM  18      - 4,373,314.967   433,195.932   MT  0.99965494   -0 29 39.7
 JU3895
 JU3895!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3895!SPC MD       -   1.00000201  x   1.00001044  =   1.00001245
 JU3895!UTM  18      -   1.00000201  x   0.99965494  =   0.99965695
 JU3895
 JU3895_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3319573314(NAD 83)
 JU3895
 JU3895                          SUPERSEDED SURVEY CONTROL
 JU3895
 JU3895  NAD 83(1986)-  39 30 24.71930(N)    075 46 37.39823(W) AD(       ) 3
 JU3895  NAD 27      -  39 30 24.31805(N)    075 46 38.63499(W) AD(       ) 3
 JU3895  NGVD 29 (07/19/86)   20.8    (m)           68.     (f) VERT ANG       
 JU3895
 JU3895.Superseded values are not recommended for survey control.
 JU3895
 JU3895.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3895.See file dsdata.pdf to determine how the superseded data were derived.
 JU3895
 JU3895_MARKER: X = CHISELED CROSS
 JU3895_SETTING: 0 = UNSPECIFIED SETTING
 JU3895_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3895_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3895+SATELLITE: SATELLITE OBSERVATIONS - June 08, 2007
 JU3895
 JU3895  HISTORY     - Date     Condition        Report By
 JU3895  HISTORY     - 1976     MONUMENTED       NGS
 JU3895  HISTORY     - 20070608 GOOD             GEOCAC
 JU3895
 JU3895                          STATION DESCRIPTION
 JU3895
 JU3895'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3895'THE OLD BOUNDARY MONUMENT WAS FOUND IN THE UPRIGHT POSITION ON
 JU3895'THE NORTH SIDE OF A BARN OWNED BY MR. CHARLES ERWIN.  MR. ERWIN
 JU3895'STATED THAT HE HAD FOUND THE OLD MONUMENT IN THE PRONE POSITION
 JU3895'IN A SWAMP ON HIS FARM AND HAD SET IT IN THE PRESENT POSITION.
 JU3895'
 JU3895'THE COMPUTED POSITION OF THE BOUNDARY WAS FOUND TO BE IN A
 JU3895'CULTIVATED FIELD.  A NEW POINT WAS SELECTED TO THE NORTH AND OUT
 JU3895'OF ANY DANGER OF BEING DISTURBED.  THE OLD MONUMENT WAS THEN RESET
 JU3895'AT THE SELECTED LOCATION ON THE BOUNDARY.  IT IS IN A CLOCKWISE
 JU3895'DIRECTION OF 35 DEG 42 MIN 44.9 SEC FROM THE AZIMUTH MARK AT
 JU3895'TRIANGULATION STATION FRED 1961 AND AT A DISTANCE OF 402.840
 JU3895'METERS.
 JU3895'
 JU3895'THE MARK IS LOCATED 5 MILES NORTHWEST OF MIDDLETOWN,
 JU3895'DELAWARE.  IT IS 2-1/2 MILES SOUTHEAST OF CHESAPEAKE CITY,
 JU3895'MARYLAND, AND ABOUT 0.15 MILE EAST OF A PAVED NORTH-SOUTH
 JU3895'ROAD.  THE PROPERTY IS OWNED BY MR. CHARLES ERWIN, BOX 268,
 JU3895'CHESAPEAKE CITY, MARYLAND.
 JU3895'
 JU3895'TO REACH THE STATION FROM THE MAIN INTERSECTION IN SOUTH
 JU3895'CHESAPEAKE CITY, GO EAST ON A PAVED ROAD ALONG THE SOUTH SIDE OF
 JU3895'A CANAL TO A T-INTERSECTION, BEAR RIGHT AND CONTINUE EASTERLY ON
 JU3895'A PAVED ROAD FOR 1.4 MILES TO A CROSSROAD, TURN RIGHT AND GO
 JU3895'SOUTHERLY FOR 1.0 MILE TO MR. ERWINS FARM ON THE LEFT AND THE
 JU3895'MONUMENT BEHIND THE MOST SOUTHERLY BUILDING.
 JU3895'
 JU3895'THE MONUMENT IS A 12-INCH SQUARE LIMESTONE POST WITH A 1-INCH
 JU3895'CROSS CUT IN THE APEX OF THE POST.  IT IS SET IN A 2 FEET SQUARE
 JU3895'CONCRETE BASE CONSISTING OF 11 CUBIC FEET OF CEMENT.  THE OLD POST
 JU3895'PROJECTS 18-INCHES.  THERE IS NO SUB-SURFACE MARKER AT THIS
 JU3895'POINT.  IT IS 125 FEET EAST OF THE SOUTHWEST CORNER OF THE MOST
 JU3895'SOUTHERLY BARN, 15.7 FEET WEST OF THE SOUTHEAST CORNER OF THE
 JU3895'MOST SOUTHERLY BARN, 2.5 FEET SOUTH OF THE SOUTH SIDE OF THE MOST
 JU3895'SOUTHERLY BARN OF MR. ERWINS FARM.
 JU3895
 JU3895                          STATION RECOVERY (2007)
 JU3895
 JU3895'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3895'TO REACH FROM THE MAIN INTERSECTION IS SOUTH CHESAPEAKE CITY, MD, GO
 JU3895'EASTERLY ON SECOND STREET FOR ABOUT 0.5 MILES TO THE INTERSECTION WITH
 JU3895'BETHEL ROAD (MD STATE HIGHWAY 286).  TURN RIGHT AND GO EASTERLY ON
 JU3895'BETHEL ROAD FOR ABOUT 1.3 MILES TO THE INTERSECTION WITH OLD
 JU3895'TELEGRAPH ROAD.  TURN RIGHT AND GO SOUTH ON OLD TELEGRAPH ROAD FOR
 JU3895'ABOUT 1.1 MILES TO THE INTERSECTION WITH BACK CREEK ROAD.  TURN LEFT
 JU3895'AND GO EAST ON GRAVEL BACK CREEK ROAD FOR ABOUT 150 YARDS TO A GROUP
 JU3895'OF WHITE OUT-BUILDINGS.  PACK TO THE SOUTHEAST CORNER OF THE MOST
 JU3895'SOUTHERLY BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3896 ***********************************************************************
 JU3896  DESIGNATION -  BOUNDARY MONUMENT 73 1976
 JU3896  PID         -  JU3896
 JU3896  STATE/COUNTY-  MD/CECIL
 JU3896  COUNTRY     -  US
 JU3896  USGS QUAD   -  ELKTON (2016)
 JU3896
 JU3896                         *CURRENT SURVEY CONTROL
 JU3896  ______________________________________________________________________
 JU3896* NAD 83(1991) POSITION- 39 31 07.81656(N) 075 46 40.88611(W)   NO CHECK
 JU3896* NAVD 88 ORTHO HEIGHT -    12.3   (meters)       40.    (feet) VERTCON3
 JU3896  ______________________________________________________________________
 JU3896  GEOID HEIGHT    -        -33.351 (meters)                     GEOID18
 JU3896  LAPLACE CORR    -         -0.54  (seconds)                    DEFLEC18
 JU3896  HORZ ORDER      -  THIRD
 JU3896
 JU3896.The horizontal coordinates were established by classical geodetic methods
 JU3896.and adjusted by the National Geodetic Survey in January 1992.
 JU3896
 JU3896.No horizontal observational check was made to the station.
 JU3896
 JU3896.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3896.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3896
 JU3896.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3896.GEOID18 height accuracy estimate available here.
 JU3896
 JU3896.Click photographs - Photos may exist for this station.
 JU3896
 JU3896.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3896
 JU3896. The following values were computed from the NAD 83(1991) position.
 JU3896
 JU3896;                    North         East     Units Scale Factor Converg.
 JU3896;SPC MD       -   206,309.698   505,076.166   MT  1.00001277   +0 46 01.0
 JU3896;SPC MD       -   676,867.73  1,657,070.72   sFT  1.00001277   +0 46 01.0
 JU3896;UTM  18      - 4,374,644.098   433,123.936   MT  0.99965506   -0 29 42.4
 JU3896
 JU3896!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3896!SPC MD       -   1.00000331  x   1.00001277  =   1.00001608
 JU3896!UTM  18      -   1.00000331  x   0.99965506  =   0.99965837
 JU3896
 JU3896_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3312374644(NAD 83)
 JU3896
 JU3896                          SUPERSEDED SURVEY CONTROL
 JU3896
 JU3896  NAD 83(1986)-  39 31 07.80960(N)    075 46 40.89349(W) AD(       ) 3
 JU3896  NAD 27      -  39 31 07.40998(N)    075 46 42.12996(W) AD(       ) 3
 JU3896  NGVD 29 (07/19/86)   12.5    (m)           41.     (f) VERT ANG       
 JU3896
 JU3896.Superseded values are not recommended for survey control.
 JU3896
 JU3896.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3896.See file dsdata.pdf to determine how the superseded data were derived.
 JU3896
 JU3896_MARKER: X = CHISELED CROSS
 JU3896_SETTING: 0 = UNSPECIFIED SETTING
 JU3896_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3896_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3896+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2007
 JU3896
 JU3896  HISTORY     - Date     Condition        Report By
 JU3896  HISTORY     - 1976     MONUMENTED       NGS
 JU3896  HISTORY     - 20070630 GOOD             GEOCAC
 JU3896
 JU3896                          STATION DESCRIPTION
 JU3896
 JU3896'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3896'THE OLD BOUNDARY MONUMENT NUMBER 73 WAS FOUND IN THE PRONE
 JU3896'POSITION.  THE COMPUTED POSITION OF THE BOUNDARY WAS FOUND TO BE
 JU3896'IN A CULTIVATED FIELD, THEREFORE THE OLD BOUNDARY MONUMENT WAS
 JU3896'RESET SLIGHTLY TO THE NORTH AND OUT OF DANGER OF FARM OPERATIONS.
 JU3896'
 JU3896'THE STATION IS LOCATED ABOUT 12 MILES SOUTH OF NEWARK, 2 MILES
 JU3896'SOUTHEAST OF CHESAPEAKE CITY, AND ABOUT 1 MILE SOUTH OF THE
 JU3896'C AND D CANAL.  THE PROPERTY IS OWNED BY MR. CLEVER CARTER AND
 JU3896'MR. CARTER LIVES JUST NORTH OF THE STATION.
 JU3896'
 JU3896'TO REACH FROM THE POST OFFICE IN CHESAPEAKE CITY, GO EAST AND
 JU3896'NORTHEAST ON STATE HIGHWAY 286 FOR 0.5 MILE TO A
 JU3896'T-INTERSECTION.  TURN RIGHT AND GO EAST ON STATE HIGHWAY 286 FOR
 JU3896'1.3 MILE TO A CROSSROADS.  CONTINUE EAST ON STATE HIGHWAY 286
 JU3896'FOR 0.3 MILE TO MR. CLEVERS HOME ON THE RIGHT.  TURN RIGHT AND
 JU3896'GO SOUTH CROSSING A FIELD AND PASSING MR. CLEVERS HOME FOR 0.2
 JU3896'MILE TO THE STATION IN A FENCE LINE.
 JU3896'
 JU3896'THE SURFACE MARK IS A 12-INCH SQUARE LIMESTONE POST SET IN A MASS
 JU3896'OF CONCRETE PROJECTING 18-INCHES.  IT HAS A P ON THE EAST SIDE AND
 JU3896'AN M ON THE WEST SIDE WITH A 1/2 INCH CROSS CUT IN THE APEX OF
 JU3896'THE POST MARKING THE POINT INTERSECTED.  THE SUB-SURFACE MARKER
 JU3896'IS A MARYLAND-DELAWARE BOUNDARY DISK STAMPED N-S NO. 73 1976, SET
 JU3896'IN THE TOP OF AN 8-INCH MASS OF CONCRETE WHICH IS 42-INCHES
 JU3896'BELOW THE SURFACE.  THEY ARE 100 YARDS SOUTH OF MR. CARTERS
 JU3896'HOUSE, 150 FEET SOUTHWEST OF A WOODED AREA IN THE SOUTH PART
 JU3896'OF A FIELD, 4 FEET SOUTH OF THE SOUTH EDGE OF THE FIELD, 2
 JU3896'FEET NORTH OF A WOODED FENCE LINE, AND 2 FEET WEST OF A
 JU3896'WITNESS POST.
 JU3896'
 JU3896'FOR ADDITIONAL INFORMATION, SEE DESCRIPTION FOR STATION PURPLE
 JU3896'1961.
 JU3896
 JU3896                          STATION RECOVERY (2007)
 JU3896
 JU3896'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3896'THE STONE IS IN GOOD CONDITION AND PROJECTS 33 INCHES.  IT IS LOCATED
 JU3896'IN A SMALL CLEARING AT THE INTERSECTION OF THE FENCES FOR THREE
 JU3896'PASTURES.  TO REACH FROM EXIT 1 OFF INTERSTATE HIGHWAY 95 SOUTH OF
 JU3896'NEWARK, DE, GO SOUTH ON DELAWARE STATE HIGHWAY 896 (SOUTH COLLEGE
 JU3896'ROAD) FOR ABOUT 2.9 MILES TO THE INTERSECTION WITH US HIGHWAY 40 AND
 JU3896'301.  CONTINUE SOUTH THROUGH THE INTERSECTION, NOW ON US HIGHWAY 301,
 JU3896'FOR ABOUT 5.4 MILES TO THE INTERSECTION WITH BETHEL CHURCH ROAD.  TURN
 JU3896'LEFT AND GO WESTERLY ON BETHEL CHURCH ROAD FOR ABOUT 2.6 MILES
 JU3896'TO THE STATE BOUNDARY LINE.  CONTINUE WEST, NOW ON BETHEL ROAD, FOR
 JU3896'ABOUT 0.2 MILES TO THE INTERSECTION WITH OLD TELEGRAPH ROAD.  TURN
 JU3896'LEFT AND GO SOUTH ON OLD TELEGRAPH ROAD FOR ABOUT 0.5 MILES TO THE
 JU3896'INTERSECTION WITH ANDREA DRIVE.  TURN LEFT AND GO EASTERLY ON ANDREA
 JU3896'DRIVE FOR ABOUT 0.3 MILES TO THE STATE BOUNDARY LINE AND A GRAVEL
 JU3896'DRIVEWAY LEADING NORTH AT THE MAILBOX FOR HOUSE NUMBER 115.  TURN LEFT
 JU3896'AND GO NORTH ON THE GRAVEL DRIVEWAY FOR ABOUT 0.17 MILES TO A PAVED
 JU3896'PARKING AREA ON THE EAST SIDE OF THE HOUSE.  FROM THE NORTHEAST
 JU3896'CORNER OF THE PAVED PARKING AREA, PACK NORTH BETWEEN PARALLEL,
 JU3896'NORTH-SOUTH PASTURE FENCES FOR ABOUT 335 FEET TO THE STONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3897 ***********************************************************************
 JU3897  DESIGNATION -  BOUNDARY MONUMENT 75 DE MD RESET
 JU3897  PID         -  JU3897
 JU3897  STATE/COUNTY-  MD/CECIL
 JU3897  COUNTRY     -  US
 JU3897  USGS QUAD   -  ELKTON (2016)
 JU3897
 JU3897                         *CURRENT SURVEY CONTROL
 JU3897  ______________________________________________________________________
 JU3897* NAD 83(1991) POSITION- 39 32 46.30700(N) 075 46 48.86320(W)   NO CHECK
 JU3897* NAVD 88 ORTHO HEIGHT -    16.4   (meters)       54.    (feet) VERTCON3
 JU3897  ______________________________________________________________________
 JU3897  GEOID HEIGHT    -        -33.270 (meters)                     GEOID18
 JU3897  LAPLACE CORR    -          0.55  (seconds)                    DEFLEC18
 JU3897  HORZ ORDER      -  THIRD
 JU3897
 JU3897.The horizontal coordinates were established by classical geodetic methods
 JU3897.and adjusted by the National Geodetic Survey in January 1992.
 JU3897
 JU3897.No horizontal observational check was made to the station.
 JU3897
 JU3897.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3897.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3897
 JU3897.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3897.GEOID18 height accuracy estimate available here.
 JU3897
 JU3897.Click photographs - Photos may exist for this station.
 JU3897
 JU3897.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3897
 JU3897. The following values were computed from the NAD 83(1991) position.
 JU3897
 JU3897;                    North         East     Units Scale Factor Converg.
 JU3897;SPC MD       -   209,344.416   504,845.053   MT  1.00001824   +0 45 56.0
 JU3897;SPC MD       -   686,824.14  1,656,312.48   sFT  1.00001824   +0 45 56.0
 JU3897;UTM  18      - 4,377,682.076   432,959.787   MT  0.99965533   -0 29 48.5
 JU3897
 JU3897!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3897!SPC MD       -   1.00000265  x   1.00001824  =   1.00002089
 JU3897!UTM  18      -   1.00000265  x   0.99965533  =   0.99965798
 JU3897
 JU3897_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3295977682(NAD 83)
 JU3897
 JU3897                          SUPERSEDED SURVEY CONTROL
 JU3897
 JU3897  NAD 83(1986)-  39 32 46.30010(N)    075 46 48.87039(W) AD(       ) 3
 JU3897  NAD 27      -  39 32 45.90470(N)    075 46 50.10640(W) AD(       ) 3
 JU3897  NGVD 29 (07/19/86)   16.6    (m)           54.     (f) VERT ANG       
 JU3897
 JU3897.Superseded values are not recommended for survey control.
 JU3897
 JU3897.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3897.See file dsdata.pdf to determine how the superseded data were derived.
 JU3897
 JU3897_MARKER: X = CHISELED CROSS
 JU3897_SETTING: 0 = UNSPECIFIED SETTING
 JU3897_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3897+SATELLITE: SATELLITE OBSERVATIONS - April 06, 2007
 JU3897
 JU3897  HISTORY     - Date     Condition        Report By
 JU3897  HISTORY     - 1977     MONUMENTED       NGS
 JU3897  HISTORY     - 20070406 GOOD             GEOCAC
 JU3897
 JU3897                          STATION DESCRIPTION
 JU3897
 JU3897'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 JU3897'THE MONUMENT IS LOCATED 5-1/2 MILES SOUTH OF GLASGOW, DELAWARE, 2
 JU3897'MILES NORTHEAST OF CHESAPEAKE CITY, MARYLAND, AND 1/2 MILE NORTH
 JU3897'OF THE C AND D CANAL, AND ON PROPERTY OWNED BY THE JOHN LOSTEN
 JU3897'DAIRY, INC., ROUTE 2, CHESAPEAKE CITY, MARYLAND.
 JU3897'
 JU3897'TO REACH FROM THE CENTER OF THE SMALL TOWN OF NORTH CHESAPEAKE
 JU3897'CITY, GO EAST ON STATE HIGHWAY 285 TO A SIDE ROAD LEFT.  TURN LEFT,
 JU3897'GO NORTH ON A PAVED ROAD FOR 0.35 MILE TO A HIGHLINE CROSSING.
 JU3897'TURN LEFT, GO WEST ACROSS A CULTIVATED FIELD FOR 0.35 MILE TO
 JU3897'TRIANGULATION STATION WARREN 1961 AND THE MONUMENT JUST WEST
 JU3897'OF THE STATION.
 JU3897'
 JU3897'THE SURFACE MARK IS A 12-INCH SQUARE LIMESTONE MONUMENT WITH THE
 JU3897'PENN COAT OF ARMS ON THE EAST AND THE CROWN OF CALVERT ON THE
 JU3897'WEST.  THE OLD MONUMENT IS SET IN A 7 CUBIC FOOT CONCRETE BASE
 JU3897'AND PROJECTS 18-INCHES.  DIRECTLY BELOW THE SURFACE MONUMENT, A
 JU3897'STANDARD NATIONAL GEODETIC SURVEY TRIANGULATION STATION DISK IS
 JU3897'SET.  IT IS SET IN A 10-INCH ROUND CONCRETE MONUMENT CONSISTING
 JU3897'OF 1-1/2 CUBIC FOOT OF CONCRETE.  IT IS 36-INCHES BELOW THE
 JU3897'SURFACE OF THE GROUND, AND IS STAMPED N-S NO. 75 1976.  IT IS
 JU3897'SET ON A LOW ROLLING HILL ABOUT 0.35 MILE WEST OF A PAVED
 JU3897'ROAD, 0.35 MILE NORTH OF STATE HIGHWAY 285, 66 FEET NORTHWEST
 JU3897'OF A WITNESS POST, AND SET INSIDE OF A 8 FOOT SQUARE WHICH
 JU3897'IS MADE UP OF FOUR STEEL POSTS.
 JU3897
 JU3897                          STATION RECOVERY (2007)
 JU3897
 JU3897'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3897'THE STONE IS NOW FLANKED BY TWO SIX-INCH BY SIX-INCH BY SIX-FOOT WOOD
 JU3897'POSTS.  THE STONE PROJECTS TEN INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3898 ***********************************************************************
 JU3898  DESIGNATION -  BOUNDARY MONUMENT 77 1976
 JU3898  PID         -  JU3898
 JU3898  STATE/COUNTY-  MD/CECIL
 JU3898  COUNTRY     -  US
 JU3898  USGS QUAD   -  ELKTON (2016)
 JU3898
 JU3898                         *CURRENT SURVEY CONTROL
 JU3898  ______________________________________________________________________
 JU3898* NAD 83(1991) POSITION- 39 34 40.09111(N) 075 46 58.07754(W)   NO CHECK
 JU3898* NAVD 88 ORTHO HEIGHT -    22.    (meters)       72.    (feet) VERTCON3
 JU3898  ______________________________________________________________________
 JU3898  GEOID HEIGHT    -        -33.173 (meters)                     GEOID18
 JU3898  LAPLACE CORR    -          1.35  (seconds)                    DEFLEC18
 JU3898  HORZ ORDER      -  THIRD
 JU3898
 JU3898.The horizontal coordinates were established by classical geodetic methods
 JU3898.and adjusted by the National Geodetic Survey in January 1992.
 JU3898
 JU3898.No horizontal observational check was made to the station.
 JU3898
 JU3898.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3898.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3898
 JU3898.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3898.GEOID18 height accuracy estimate available here.
 JU3898
 JU3898.Click photographs - Photos may exist for this station.
 JU3898
 JU3898.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3898
 JU3898. The following values were computed from the NAD 83(1991) position.
 JU3898
 JU3898;                    North         East     Units Scale Factor Converg.
 JU3898;SPC MD       -   212,850.415   504,578.270   MT  1.00002486   +0 45 50.2
 JU3898;SPC MD       -   698,326.74  1,655,437.21   sFT  1.00002486   +0 45 50.2
 JU3898;UTM  18      - 4,381,191.817   432,770.389   MT  0.99965565   -0 29 55.5
 JU3898
 JU3898!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3898!SPC MD       -   1.00000179  x   1.00002486  =   1.00002665
 JU3898!UTM  18      -   1.00000179  x   0.99965565  =   0.99965744
 JU3898
 JU3898_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3277081191(NAD 83)
 JU3898
 JU3898                          SUPERSEDED SURVEY CONTROL
 JU3898
 JU3898  NAD 83(1986)-  39 34 40.08459(N)    075 46 58.08458(W) AD(       ) 3
 JU3898  NAD 27      -  39 34 39.69091(N)    075 46 59.32045(W) AD(       ) 3
 JU3898  NGVD 29 (07/19/86)   22.     (m)           72.     (f) VERT ANG       
 JU3898
 JU3898.Superseded values are not recommended for survey control.
 JU3898
 JU3898.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3898.See file dsdata.pdf to determine how the superseded data were derived.
 JU3898
 JU3898_MARKER: V = STONE MONUMENT
 JU3898_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 JU3898_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3898_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3898+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2008
 JU3898
 JU3898  HISTORY     - Date     Condition        Report By
 JU3898  HISTORY     - 1976     MONUMENTED       NGS
 JU3898  HISTORY     - 20080208 GOOD             GEOCAC
 JU3898
 JU3898                          STATION DESCRIPTION
 JU3898
 JU3898'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3898'THE OLD MONUMENT WAS FOUND IN THE PRONE POSITION ABOUT 20 FEET
 JU3898'SOUTHEAST OF THE COMPUTED POSITION OF THE STONE.  IT WAS RESET
 JU3898'AT THIS DATE.
 JU3898'
 JU3898'A COMPLETE DESCRIPTION FOLLOWS.
 JU3898'
 JU3898'THE MONUMENT IS LOCATED 3 MILES SOUTHEAST OF ELKTON, 3 MILES
 JU3898'NORTHEAST OF CHESAPEAKE CITY, 2-1/2 MILES NORTH OF THE C AND D
 JU3898'CANAL, AND IN THE SOUTHEAST CORNER OF A CULTIVATED FIELD.  THE
 JU3898'PROPERTY IS OWNED BY MR. ROMAN CHICOSKY.
 JU3898'
 JU3898'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JU3898'STATE HIGHWAY 213 ELKTON, MARYLAND, GO SOUTHERLY ON HIGHWAY 213
 JU3898'FOR 2.4 MILES TO A SIDE ROAD LEFT, TURN LEFT GO EAST ON A PAVED
 JU3898'ROAD FOR 1.25 MILES TO A SIDE ROAD LEFT.  TURN LEFT AND GO NORTH
 JU3898'ON A PAVED ROAD FOR 0.4 MILE TO A FIELD ROAD ON THE RIGHT, TURN
 JU3898'RIGHT AND FOLLOW FIELD ROAD EAST ALONG SOUTH SIDE OF DITCH FOR
 JU3898'0.3 MILE TO A WOODED AREA ON THE LEFT AT THE SOUTHEAST EDGE OF
 JU3898'A FIELD AND THE MARKER.
 JU3898'
 JU3898'BOUNDARY MONUMENT NUMBER 77 IS A 12-INCH SQUARE LIMESTONE POST
 JU3898'42-INCHES LONG.  IT IS SET IN A 2 BY 2 BY 3 FEET SQUARE MASS OF
 JU3898'CONCRETE AND THE TOP OF THE OLD MONUMENT PROJECTS 14-INCHES.  IT
 JU3898'IS 10 FEET NORTHWEST OF A FENCE CORNER AND 2.3 FEET EAST OF A
 JU3898'WITNESS POST.  THERE IS NO SUB-SURFACE DISK AT THIS POINT.
 JU3898
 JU3898                          STATION RECOVERY (2008)
 JU3898
 JU3898'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 JU3898'THE STONE IS ERECT AND STABLE, AND PROJECTS ABOUT 24 INCHES.  IT IS AT
 JU3898'THE SOUTHWEST CORNER OF A WOODED AREA, ABOUT 0.3 MILES EAST OF HUTTON
 JU3898'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3903 ***********************************************************************
 JU3903  DESIGNATION -  BOUNDARY MONUMENT 74 DE MD
 JU3903  PID         -  JU3903
 JU3903  STATE/COUNTY-  MD/CECIL
 JU3903  COUNTRY     -  US
 JU3903  USGS QUAD   -  ELKTON (2016)
 JU3903
 JU3903                         *CURRENT SURVEY CONTROL
 JU3903  ______________________________________________________________________
 JU3903* NAD 83(1991) POSITION- 39 32 00.45756(N) 075 46 45.15753(W)   ADJUSTED
 JU3903* NAVD 88 ORTHO HEIGHT -    14.9   (meters)       49.    (feet) VERTCON3
 JU3903  ______________________________________________________________________
 JU3903  GEOID HEIGHT    -        -33.309 (meters)                     GEOID18
 JU3903  LAPLACE CORR    -         -0.04  (seconds)                    DEFLEC18
 JU3903  HORZ ORDER      -  SECOND
 JU3903
 JU3903.The horizontal coordinates were established by classical geodetic methods
 JU3903.and adjusted by the National Geodetic Survey in January 1992.
 JU3903
 JU3903.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3903.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3903
 JU3903.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3903.GEOID18 height accuracy estimate available here.
 JU3903
 JU3903.Click photographs - Photos may exist for this station.
 JU3903
 JU3903.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3903
 JU3903. The following values were computed from the NAD 83(1991) position.
 JU3903
 JU3903;                    North         East     Units Scale Factor Converg.
 JU3903;SPC MD       -   207,931.681   504,952.435   MT  1.00001567   +0 45 58.4
 JU3903;SPC MD       -   682,189.19  1,656,664.78   sFT  1.00001567   +0 45 58.4
 JU3903;UTM  18      - 4,376,267.831   433,035.995   MT  0.99965521   -0 29 45.6
 JU3903
 JU3903!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3903!SPC MD       -   1.00000289  x   1.00001567  =   1.00001856
 JU3903!UTM  18      -   1.00000289  x   0.99965521  =   0.99965810
 JU3903
 JU3903_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3303576267(NAD 83)
 JU3903
 JU3903                          SUPERSEDED SURVEY CONTROL
 JU3903
 JU3903  NAD 83(1986)-  39 32 00.45065(N)    075 46 45.16481(W) AD(       ) 2
 JU3903  NAD 27      -  39 32 00.05250(N)    075 46 46.40100(W) AD(       ) 2
 JU3903  NGVD 29 (07/19/86)   15.1    (m)           50.     (f) VERT ANG       
 JU3903
 JU3903.Superseded values are not recommended for survey control.
 JU3903
 JU3903.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3903.See file dsdata.pdf to determine how the superseded data were derived.
 JU3903
 JU3903_MARKER: V = STONE MONUMENT
 JU3903_SETTING: 0 = UNSPECIFIED SETTING
 JU3903_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3903_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3903+SATELLITE: SATELLITE OBSERVATIONS - April 26, 2011
 JU3903
 JU3903  HISTORY     - Date     Condition        Report By
 JU3903  HISTORY     - 1961     MONUMENTED       CGS
 JU3903  HISTORY     - 20031023 GOOD             GEOCAC
 JU3903  HISTORY     - 20110426 GOOD             GEOCAC
 JU3903
 JU3903                          STATION DESCRIPTION
 JU3903
 JU3903'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3903'THE STATION IS LOCATED ALONG THE WEST SIDE OF A NORTH AND SOUTH
 JU3903'FENCELINE, NEAR THE SOUTHEAST CORNER OF THE BETHEL CEMETERY,
 JU3903'ABOUT 2.8 MILES WEST OF STATE HIGHWAY 896, 1.6 MILES EAST OF
 JU3903'CHESAPEAKE CITY AND ABOUT 20 YARDS SOUTH OF THE CHESAPEAKE AND
 JU3903'DELAWARE CANAL.  IT IS A 11-INCH SQUARE LIMESTONE PROJECTING
 JU3903'ABOUT 30 INCHES ABOVE THE SURFACE OF THE GROUND, BEARING THE COAT
 JU3903'OF ARMS, WITH THE LETTER M ON THE WEST SIDE AND P ON THE EAST
 JU3903'SIDE.  IT IS CHIPPED AND LEANS TO THE EAST-SOUTHEAST.  IT
 JU3903'IS AT THE SOUTH END OF AN EVERGREEN HEDGE ROW AND THE NORTH
 JU3903'END OF A WOVEN WIRE FENCE.
 JU3903'
 JU3903'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION BETHEL
 JU3903'RM NO 3, DISTANCE BEING 50.326 METERS AND (165.11 FEET) NORTH OF
 JU3903'STATION BETHEL RM NO 3.
 JU3903
 JU3903                          STATION RECOVERY (2003)
 JU3903
 JU3903'RECOVERY NOTE BY GEOCACHING 2003 (WD)
 JU3903'BOUNDARY MONUMENT 74 DE MD IS AN 11-INCH BY 11.5-INCH LIMESTONE SHAFT
 JU3903'THAT PROJECTS 33 INCHES.  ACCORDING TO THE DELAWARE GEOLOGICAL SURVEY,
 JU3903'THIS STONE BOUNDARY MONUMENT WAS SET IN 1766 BY THE MASON-DIXON
 JU3903'TANGENT LINE SURVEY.  IT IS AN INTERMEDIARY BOUNDARY MILE MARKER, AND
 JU3903'IS IN VERY GOOD CONDITION.
 JU3903'THE STONE LEANS NINE DEGREES TO THE NORTHEAST.  THE STONE HAS A P CUT
 JU3903'INTO THE EAST FACE AND AN M CUT INTO THE WEST FACE.  THE STONE IS
 JU3903'LOCATED ALONG THE EASTERN BOUNDARY FENCE OF BETHEL CEMETERY.  THE
 JU3903'SOUTHERN BOUNDARY OF THE CEMETERY HAS BEEN EXTENDED FARTHER SOUTH BY
 JU3903'ABOUT 60 FEET (18.29 M), AND THE FOLLOWING DISTANCES CORRECT THE 1961
 JU3903'DESCRIPTION FOR THIS CHANGE.
 JU3903'THERE ARE SIX PARALLEL EAST-WEST GRAVEL ROADS IN THE CEMETERY, AND A
 JU3903'GRAVEL NORTH-SOUTH ROAD JUST INSIDE THE EASTERN BOUNDARY THAT LINKS
 JU3903'THE SIX EAST-WEST ROADS.  THE STONE IS LOCATED EAST OF THE NORTH-SOUTH
 JU3903'GRAVEL ROAD, AND ABOUT THREE FEET (0.91 M) NORTH OF THE EXTENDED
 JU3903'CENTERLINE OF THE THIRD EAST-WEST GRAVEL ROAD FROM THE SOUTHERN
 JU3903'BOUNDARY OF THE CEMETERY.
 JU3903'THE STONE SITS 1.8 FEET (0.55 M) WEST OF THE NORTH-SOUTH EASTERN
 JU3903'BOUNDARY FENCE, 227 FEET (69.19 M) NORTH OF THE SOUTHEAST CORNER OF
 JU3903'THE CEMETERY, 3.3 FEET (1.01 M) EAST OF THE EAST EDGE OF A NORTH-SOUTH
 JU3903'GRAVEL ROAD, 19.0 FEET (5.79 M) NORTHEAST OF THE CENTER OF THE
 JU3903'INTERSECTION OF THE NORTH-SOUTH GRAVEL ROAD AND THE THIRD EAST-WEST
 JU3903'GRAVEL ROAD,
 JU3903'4.5 FEET (1.37 M) NORTHWEST OF REFERENCE MARK 2 FOR STATION BETHEL,
 JU3903'164.7 FEET (50.20 M) NORTH-NORTHEAST OF REFERENCE MARK 3 FOR STATION
 JU3903'BETHEL, AND ABOUT 250 FEET (76.20 M) SOUTH OF THE SOUTH BANK OF THE
 JU3903'CHESAPEAKE AND DELAWARE CANAL.
 JU3903'TO REACH FROM THE EXIT FOR CHESAPEAKE CITY (SOUTH) ON THE SOUTHERN END
 JU3903'OF THE MD RTE 213 BRIDGE OVER THE CHESAPEAKE AND DELAWARE CANAL, GO
 JU3903'NORTHEAST ON GEORGE STREET FOR 0.27 MILES (0.43 KM) TO SECOND STREET.
 JU3903'TURN RIGHT (EAST) AND GO EASTERLY ON SECOND STREET FOR 0.49 MILES
 JU3903'(0.79 KM) TO BETHEL CHURCH ROAD/MD RTE 286.
 JU3903'TURN RIGHT (SOUTHEAST) ON BETHEL CHURCH ROAD AND GO EASTERLY FOR 1.37
 JU3903'MILES (2.20 KM) TO OLD TELEGRAPH ROAD.  TURN LEFT (NORTH) ON OLD
 JU3903'TELEGRAPH ROAD AND GO NORTH FOR 0.9 MILES (1.45 KM) TO THE ENTRANCE TO
 JU3903'BETHEL CEMETERY ON THE RIGHT.  TURN RIGHT (EAST) THROUGH THE ENTRANCE
 JU3903'DRIVE AND GO EAST FOR 0.2 MILES (0.32 KM) TO THE NORTH-SOUTH GRAVEL
 JU3903'BOUNDARY DRIVE AND THE STONE.
 JU3903
 JU3903                          STATION RECOVERY (2011)
 JU3903
 JU3903'RECOVERY NOTE BY GEOCACHING 2011 (PSC)
 JU3903'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3906 ***********************************************************************
 JU3906  DESIGNATION -  BOUNDARY MONUMENT 76 DE MD
 JU3906  PID         -  JU3906
 JU3906  STATE/COUNTY-  MD/CECIL
 JU3906  COUNTRY     -  US
 JU3906  USGS QUAD   -  ELKTON (2016)
 JU3906
 JU3906                         *CURRENT SURVEY CONTROL
 JU3906  ______________________________________________________________________
 JU3906* NAD 83(1991) POSITION- 39 33 44.77444(N) 075 46 53.58979(W)   ADJUSTED
 JU3906* NAVD 88 ORTHO HEIGHT -    18.1   (meters)       59.    (feet) VERTCON3
 JU3906  ______________________________________________________________________
 JU3906  GEOID HEIGHT    -        -33.217 (meters)                     GEOID18
 JU3906  LAPLACE CORR    -          0.97  (seconds)                    DEFLEC18
 JU3906  HORZ ORDER      -  SECOND
 JU3906
 JU3906.The horizontal coordinates were established by classical geodetic methods
 JU3906.and adjusted by the National Geodetic Survey in January 1992.
 JU3906
 JU3906.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3906.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3906
 JU3906.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3906.GEOID18 height accuracy estimate available here.
 JU3906
 JU3906.Click photographs - Photos may exist for this station.
 JU3906
 JU3906.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3906
 JU3906. The following values were computed from the NAD 83(1991) position.
 JU3906
 JU3906;                    North         East     Units Scale Factor Converg.
 JU3906;SPC MD       -   211,145.954   504,708.138   MT  1.00002160   +0 45 53.1
 JU3906;SPC MD       -   692,734.68  1,655,863.28   sFT  1.00002160   +0 45 53.1
 JU3906;UTM  18      - 4,379,485.536   432,862.633   MT  0.99965549   -0 29 52.1
 JU3906
 JU3906!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3906!SPC MD       -   1.00000238  x   1.00002160  =   1.00002398
 JU3906!UTM  18      -   1.00000238  x   0.99965549  =   0.99965787
 JU3906
 JU3906_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3286279485(NAD 83)
 JU3906
 JU3906                          SUPERSEDED SURVEY CONTROL
 JU3906
 JU3906  NAD 83(1986)-  39 33 44.76752(N)    075 46 53.59686(W) AD(       ) 2
 JU3906  NAD 27      -  39 33 44.37340(N)    075 46 54.83290(W) AD(       ) 2
 JU3906  NGVD 29 (07/19/86)   18.3    (m)           60.     (f) VERT ANG       
 JU3906
 JU3906.Superseded values are not recommended for survey control.
 JU3906
 JU3906.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3906.See file dsdata.pdf to determine how the superseded data were derived.
 JU3906
 JU3906_MARKER: V = STONE MONUMENT
 JU3906_SETTING: 0 = UNSPECIFIED SETTING
 JU3906_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3906_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3906+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2008
 JU3906
 JU3906  HISTORY     - Date     Condition        Report By
 JU3906  HISTORY     - 1961     MONUMENTED       CGS
 JU3906  HISTORY     - 20080208 GOOD             GEOCAC
 JU3906
 JU3906                          STATION DESCRIPTION
 JU3906
 JU3906'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3906'THE STATION IS LOCATED IN A WOODED AREA ON PROPERTY OWNED BY
 JU3906'MR. ALPHONSE J. EMERLE, ABOUT 4-1/2 MILES SOUTHEAST OF ELKTON,
 JU3906'3-3/4 MILES SOUTHWEST OF GLASGOW AND 3-1/2 MILES NORTHEAST OF
 JU3906'NORTH CHESAPEAKE CITY, 100.0 FEET EAST-NORTHEAST OF THE
 JU3906'APPROXIMATE CENTERLINE OF A NORTH AND SOUTH WOODS ROAD, 79.0 FEET
 JU3906'NORTHEAST OF A STANDARD METAL WITNESS POST AND MARKER AND 60.9
 JU3906'FEET NORTHEAST OF A 20-INCH WHITE OAK TREE.  THE MONUMENT IS A
 JU3906'15-INCH SQUARE GRANITE STONE PROJECTING ABOUT 3.0 FEET ABOVE
 JU3906'THE SURFACE OF THE GROUND, WITH THE LETTER M ON THE WEST SIDE
 JU3906'AND P ON THE EAST SIDE AND IT LEANS SLIGHTLY AND INSECURE.
 JU3906'SURFACES IN FINE CONDITION EXCEPT FOR CHIPPING.
 JU3906'
 JU3906'TO REACH THE STATION EMERLY FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JU3906'213 ABOUT 1/2 MILE SOUTH OF ELKTON, GO SOUTH ON U.S. HIGHWAY 213
 JU3906'FOR 2.5 MILES TO A CROSSROAD, TURN LEFT, GO EAST ON A MACADAM
 JU3906'ROAD FOR 1.45 MILES TO A FARM ROAD RIGHT, JUST WEST OF
 JU3906'MR. EMERLES HOUSE, TURN RIGHT AND GO SOUTH ON A FARM ROAD FOR
 JU3906'0.35 MILE TO A DIM FORK, CONTINUE STRAIGHT AHEAD ON THE RIGHT
 JU3906'FORK FOR 0.3 MILE TO DIM WOODS ROAD RIGHT AND THE STATION EMERLY
 JU3906'LOCATED ON THE LEFT.
 JU3906'
 JU3906'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION EMERLE,
 JU3906'DISTANCE BEING 24.044 METERS AND 78.89 FEET NORTHEAST OF STATION
 JU3906'EMERLE.
 JU3906
 JU3906                          STATION RECOVERY (2008)
 JU3906
 JU3906'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 JU3906'THE STONE IS ERECT AND STABLE, AND PROJECTS 19 INCHES.  TO REACH FROM
 JU3906'THE INTERSECTION OF US HIGHWAY 40 AND 213 ABOUT ONE-HALF MILE SOUTH OF
 JU3906'ELKTON, MD, GO SOUTH ON US HIGHWAY 213 FOR ABOUT 3.4 MILES TO THE
 JU3906'INTERSECTION WITH ELK FOREST ROAD.  TURN LEFT AND GO NORTHEAST ON ELK
 JU3906'
 JU3906'FOREST ROAD FOR ABOUT 100 YARDS TO THE INTERSECTION WITH KNIGHTS
 JU3906'CORNER ROAD.  TURN RIGHT AND GO SOUTHEAST ON KNIGHTS CORNER ROAD FOR
 JU3906'ABOUT 0.4 MILES TO THE INTERSECTION WITH WOODS ROAD.  TURN LEFT AND GO
 JU3906'EASTERLY ON WOODS ROAD FOR ABOUT 1.1 MILES TO THE STATE BOUNDARY
 JU3906'LINE AND A DRIVEWAY LEADING NORTH.  TURN LEFT AND GO NORTH ON THE
 JU3906'DRIVEWAY FOR ABOUT 0.25 MILES TO A WHITE FARMHOUSE ON THE RIGHT.  FROM
 JU3906'THE FARMHOUSE, PACK NORTH ON A MUDDY WOODS ROAD FOR ABOUT 0.3 MILES TO
 JU3906'THE STONE ON THE RIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3825 ***********************************************************************
 JU3825  DESIGNATION -  BOUNDARY MONUMENT 81 DEL MD
 JU3825  PID         -  JU3825
 JU3825  STATE/COUNTY-  MD/CECIL
 JU3825  COUNTRY     -  US
 JU3825  USGS QUAD   -  NEWARK WEST (2016)
 JU3825
 JU3825                         *CURRENT SURVEY CONTROL
 JU3825  ______________________________________________________________________
 JU3825* NAD 83(1991) POSITION- 39 38 06.20685(N) 075 47 14.82720(W)   NO CHECK
 JU3825* NAVD 88 ORTHO HEIGHT -    53.    (meters)      174.    (feet) SCALED
 JU3825  ______________________________________________________________________
 JU3825  GEOID HEIGHT    -        -33.066 (meters)                     GEOID18
 JU3825  LAPLACE CORR    -          1.57  (seconds)                    DEFLEC18
 JU3825  HORZ ORDER      -  THIRD
 JU3825
 JU3825.The horizontal coordinates were established by classical geodetic methods
 JU3825.and adjusted by the National Geodetic Survey in January 1992.
 JU3825
 JU3825.No horizontal observational check was made to the station.
 JU3825
 JU3825.The orthometric height was scaled from a topographic map.
 JU3825
 JU3825.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3825.GEOID18 height accuracy estimate available here.
 JU3825
 JU3825.Click photographs - Photos may exist for this station.
 JU3825
 JU3825.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3825
 JU3825. The following values were computed from the NAD 83(1991) position.
 JU3825
 JU3825;                    North         East     Units Scale Factor Converg.
 JU3825;SPC MD       -   219,201.518   504,094.114   MT  1.00003762   +0 45 39.7
 JU3825;SPC MD       -   719,163.65  1,653,848.77   sFT  1.00003762   +0 45 39.7
 JU3825;UTM  18      - 4,387,549.663   432,426.474   MT  0.99965622   -0 30 08.4
 JU3825
 JU3825!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3825!SPC MD       -   0.99999692  x   1.00003762  =   1.00003454
 JU3825!UTM  18      -   0.99999692  x   0.99965622  =   0.99965314
 JU3825
 JU3825_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3242687549(NAD 83)
 JU3825
 JU3825                          SUPERSEDED SURVEY CONTROL
 JU3825
 JU3825  NAD 83(1986)-  39 38 06.20089(N)    075 47 14.83370(W) AD(       ) 3
 JU3825  NAD 27      -  39 38 05.80880(N)    075 47 16.07100(W) AD(       ) 3
 JU3825
 JU3825.Superseded values are not recommended for survey control.
 JU3825
 JU3825.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3825.See file dsdata.pdf to determine how the superseded data were derived.
 JU3825
 JU3825_MARKER: V = STONE MONUMENT
 JU3825_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JU3825_SP_SET: STONE BOUNDARY MONUMENT
 JU3825_PROJECTION: PROJECTING 46 CENTIMETERS
 JU3825_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3825_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3825+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2010
 JU3825
 JU3825  HISTORY     - Date     Condition        Report By
 JU3825  HISTORY     - 1958     MONUMENTED       CGS
 JU3825  HISTORY     - 20070126 GOOD             GEOCAC
 JU3825  HISTORY     - 20100925 GOOD             GEOCAC
 JU3825  HISTORY     - 20251209 SEE DESCRIPTION  LOCSUR
 JU3825
 JU3825                          STATION DESCRIPTION
 JU3825
 JU3825'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3825'THE MARK IS ABOUT 4 MILES SW OF NEWARK, DELAWARE, ABOUT 3 MILES
 JU3825'NE OF ELKTON AND NEAR THE MARYLAND-DELAWARE STATE LINE.
 JU3825'
 JU3825'THE MARK IS 21 FEET W OF THE CENTER OF ROAD AND 12 FEET NNE
 JU3825'OF A LARGE TREE.  IT IS A 12X12-INCH STONE MONUMENT PROJECTING
 JU3825'ABOUT 18 INCHES WITH THE LETTER M ON THE WEST SIDE AND THE LETTER
 JU3825'P ON THE EAST SIDE.
 JU3825'
 JU3825'A TRAVERSE CONNECTION WAS MADE TO OTTS 1958.
 JU3825
 JU3825                          STATION RECOVERY (2007)
 JU3825
 JU3825'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3825'THE STONE IS LOCATED IN THE FRONT LAWN OF THE RESIDENCE AT 1647 DIXIE
 JU3825'LINE ROAD.  TO REACH FROM THE INTERSECTION OF MD STATE HIGHWAY 281
 JU3825'(MAIN STREET OR OLD BALTIMORE PIKE) AND MD STATE HIGHWAY 213 (BRIDGE
 JU3825'STREET) IN ELKTON, MD, GO NORTHEAST ON MD STATE HIOGHWAY 281 FOR
 JU3825'ABOUT 2.7 MILES TO THE STATE LINE.  CONTINUE NORTHEAST FOR ABOUT 0.1
 JU3825'MILES TO THE INTERSECTION WITH DIXIE LINE ROAD.  TURN LEFT AND GO
 JU3825'NORTH ON DIXIE LINE ROAD FOR ABOUT 0.93 MILES TO THE STONE ON THE
 JU3825'LEFT.
 JU3825
 JU3825                          STATION RECOVERY (2010)
 JU3825
 JU3825'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU3825'RECOVERED IN GOOD CONDITION.
 JU3825
 JU3825                          STATION RECOVERY (2025)
 JU3825
 JU3825'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 2025 (ZAK)
 JU3825'STATE LINE BOUNDARY MARKER RECOVERED IN GOOD CONDITION.  APPEARS TO
 JU3825'HAVE BEEN SPLIT AND REPAIRED.  LOCATED 13 ON THE WESTERLY SIDE OF
 JU3825'DIXIE LINE ROAD IN A BRUSH PATCH APPROXIMATELY 30 FT (9.1 M) NORTH OF
 JU3825'THE DRIVEWAY FOR 1675 DIXIE LINE ROAD.  BEARS AN "M" ON THE MARYLAND
 JU3825'SIDE AND A "P" ON THE DELAWARE SIDE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3844 ***********************************************************************
 JU3844  DESIGNATION -  BOUNDARY MONUMENT 85 DEL MD
 JU3844  PID         -  JU3844
 JU3844  STATE/COUNTY-  MD/CECIL
 JU3844  COUNTRY     -  US
 JU3844  USGS QUAD   -  NEWARK WEST (2016)
 JU3844
 JU3844                         *CURRENT SURVEY CONTROL
 JU3844  ______________________________________________________________________
 JU3844* NAD 83(1991) POSITION- 39 41 34.31956(N) 075 47 18.89727(W)   ADJUSTED
 JU3844* NAVD 88 ORTHO HEIGHT -    95.2   (meters)      312.    (feet) VERTCON3
 JU3844  ______________________________________________________________________
 JU3844  GEOID HEIGHT    -        -33.000 (meters)                     GEOID18
 JU3844  LAPLACE CORR    -          0.77  (seconds)                    DEFLEC18
 JU3844  HORZ ORDER      -  SECOND
 JU3844
 JU3844.The horizontal coordinates were established by classical geodetic methods
 JU3844.and adjusted by the National Geodetic Survey in January 1992.
 JU3844
 JU3844.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3844.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3844
 JU3844.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3844.GEOID18 height accuracy estimate available here.
 JU3844
 JU3844.Click photographs - Photos may exist for this station.
 JU3844
 JU3844.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3844
 JU3844. The following values were computed from the NAD 83(1991) position.
 JU3844
 JU3844;                    North         East     Units Scale Factor Converg.
 JU3844;SPC MD       -   225,618.388   503,911.888   MT  1.00005152   +0 45 37.2
 JU3844;SPC MD       -   740,216.33  1,653,250.92   sFT  1.00005152   +0 45 37.2
 JU3844;UTM  18      - 4,393,966.499   432,385.822   MT  0.99965628   -0 30 13.2
 JU3844
 JU3844!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3844!SPC MD       -   0.99999025  x   1.00005152  =   1.00004177
 JU3844!UTM  18      -   0.99999025  x   0.99965628  =   0.99964653
 JU3844
 JU3844_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3238593966(NAD 83)
 JU3844
 JU3844                          SUPERSEDED SURVEY CONTROL
 JU3844
 JU3844  NAD 83(1986)-  39 41 34.31386(N)    075 47 18.90364(W) AD(       ) 2
 JU3844  NAD 27      -  39 41 33.93240(N)    075 47 20.15740(W) AD(       ) 2
 JU3844  NGVD 29 (07/19/86)   95.5    (m)          313.     (f) VERT ANG       
 JU3844
 JU3844.Superseded values are not recommended for survey control.
 JU3844
 JU3844.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3844.See file dsdata.pdf to determine how the superseded data were derived.
 JU3844
 JU3844_MARKER: 71 = BOUNDARY MONUMENT
 JU3844_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3844+SATELLITE: SATELLITE OBSERVATIONS - October 14, 2004
 JU3844
 JU3844  HISTORY     - Date     Condition        Report By
 JU3844  HISTORY     - 1961     FIRST OBSERVED   CGS
 JU3844  HISTORY     - 20041014 GOOD             GEOCAC
 JU3844
 JU3844                          STATION DESCRIPTION
 JU3844
 JU3844'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3844'THE STATION IS LOCATED ABOUT 3.0 MILES NORTHEAST OF ELK MILLS,
 JU3844'MARYLAND, 2.0 MILES WEST-NORTHWEST OF NEWARK, DELAWARE.  IT IS A
 JU3844'9 X 12 INCH STONE PROJECTING ABOUT 25 INCHES ABOVE THE SURFACE
 JU3844'OF THE GROUND AND AT THE NORTHWEST CORNER OF A HOUSE AND HAS BEEN
 JU3844'RESET IN THE PAST AND AT THE PRESENT TIME IS LEANING TO THE SOUTH
 JU3844'AT ABOUT A 45 DEGREE ANGLE.
 JU3844'
 JU3844'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION PETERS,
 JU3844'DISTANCE BEING 18.910 METERS EAST OF STATION PETERS.
 JU3844'
 JU3844'TO REACH THE STATION PETERS FROM THE POST OFFICE IN NEWARK.  GO WEST
 JU3844'ON MAIN STREET FOR 0.4 MILE TO A TRIPLE FORKS AT A RAILROAD
 JU3844'CROSSING.  TAKE THE MIDDLE ONE OF THREE FORKS AND GO WEST ON STATE
 JU3844'HIGHWAY 273 FOR 1.9 MILES TO A CROSSROAD.  TURN LEFT AND GO SOUTH
 JU3844'ON A BLACKTOP ROAD, DOWN HILL, FOR 0.1 MILE TO A SIDE ROAD ON
 JU3844'THE LEFT, EAST, SIDE OF THE BLACKTOP ROAD.  TURN LEFT AND GO
 JU3844'EAST ON A GRAVELED ROAD FOR 0.1 MILE TO AN OLD FENCE LINE AND A
 JU3844'PROPERTY LINE.  TURN RIGHT AND GO SOUTH ON A DIM TRACK
 JU3844'ROAD, ACROSS A SMALL MEADOW FOR ABOUT 171 FEET TO THE STATION AS
 JU3844'DESCRIBED.
 JU3844
 JU3844                          STATION RECOVERY (2004)
 JU3844
 JU3844'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JU3844'THE 12-INCH BY 12-INCH MASON-DIXON STONE IS IN VERY GOOD CONDITION BUT
 JU3844'HAS BEEN REPOSITIONED ON AT LEAST TWO OCCASIONS, MOST RECENTLY IN
 JU3844'1986, USE WITH CAUTION.  A NEW TO REACH FOLLOWS. FROM THE POST OFFICE
 JU3844'IN NEWARK, DE, GO WEST ON MAIN STREET FOR 0.4 MILES TO A
 JU3844'TRIPLE FORKS AT A RAILWAY CROSSING.  TAKE THE MIDDLE ROAD AND GO
 JU3844'WEST-NORTHWEST ON STATE HIGHWAY 273 FOR 1.8 MILES TO A CEMETERY ON THE
 JU3844'LEFT.  TURN LEFT AT THE WEST END OF THE CEMETERY AND GO
 JU3844'SOUTH-SOUTHWEST ON WEST CHURCH ROAD FOR O.15 MILES TO SPRING VALLEY
 JU3844'ROAD.
 JU3844'TURN RIGHT AND GO WEST-NORTHWEST ON SPRING VALLEY ROAD FOR 0.12 MILES
 JU3844'TO A RED HOUSE ON THE LEFT AND THE STONE AT THE NORTHWEST CORNER OF
 JU3844'THE HOUSE, ABOUT 125 FEET SOUTH-SOUTHWEST OF THE CENTERLINE OF THE
 JU3844'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3845 ***********************************************************************
 JU3845  DESIGNATION -  BOUNDARY MONUMENT 86 DEL MD
 JU3845  PID         -  JU3845
 JU3845  STATE/COUNTY-  MD/CECIL
 JU3845  COUNTRY     -  US
 JU3845  USGS QUAD   -  NEWARK WEST (2016)
 JU3845
 JU3845                         *CURRENT SURVEY CONTROL
 JU3845  ______________________________________________________________________
 JU3845* NAD 83(1991) POSITION- 39 42 26.59117(N) 075 47 18.93979(W)   ADJUSTED
 JU3845* NAVD 88 ORTHO HEIGHT -    79.0   (meters)      259.    (feet) VERTCON3
 JU3845  ______________________________________________________________________
 JU3845  GEOID HEIGHT    -        -32.984 (meters)                     GEOID18
 JU3845  LAPLACE CORR    -          0.74  (seconds)                    DEFLEC18
 JU3845  HORZ ORDER      -  SECOND
 JU3845
 JU3845.The horizontal coordinates were established by classical geodetic methods
 JU3845.and adjusted by the National Geodetic Survey in January 1992.
 JU3845
 JU3845.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3845.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3845
 JU3845.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3845.GEOID18 height accuracy estimate available here.
 JU3845
 JU3845.Click photographs - Photos may exist for this station.
 JU3845
 JU3845.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3845
 JU3845. The following values were computed from the NAD 83(1991) position.
 JU3845
 JU3845;                    North         East     Units Scale Factor Converg.
 JU3845;SPC MD       -   227,230.446   503,889.481   MT  1.00005517   +0 45 37.2
 JU3845;SPC MD       -   745,505.22  1,653,177.41   sFT  1.00005517   +0 45 37.2
 JU3845;UTM  18      - 4,395,578.018   432,398.978   MT  0.99965626   -0 30 13.8
 JU3845
 JU3845!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3845!SPC MD       -   0.99999279  x   1.00005517  =   1.00004796
 JU3845!UTM  18      -   0.99999279  x   0.99965626  =   0.99964905
 JU3845
 JU3845_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3239895578(NAD 83)
 JU3845
 JU3845                          SUPERSEDED SURVEY CONTROL
 JU3845
 JU3845  NAD 83(1986)-  39 42 26.58550(N)    075 47 18.94607(W) AD(       ) 2
 JU3845  NAD 27      -  39 42 26.18930(N)    075 47 20.17540(W) AD(       ) 2
 JU3845  NGVD 29 (07/19/86)   79.3    (m)          260.     (f) VERT ANG       
 JU3845
 JU3845.Superseded values are not recommended for survey control.
 JU3845
 JU3845.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3845.See file dsdata.pdf to determine how the superseded data were derived.
 JU3845
 JU3845_MARKER: V = STONE MONUMENT
 JU3845_SETTING: 0 = UNSPECIFIED SETTING
 JU3845_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3845_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3845+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2007
 JU3845
 JU3845  HISTORY     - Date     Condition        Report By
 JU3845  HISTORY     - 1961     MONUMENTED       CGS
 JU3845  HISTORY     - 20070630 GOOD             GEOCAC
 JU3845
 JU3845                          STATION DESCRIPTION
 JU3845
 JU3845'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3845'THE STATION IS LOCATED ABOUT 4.0 MILES EAST OF FAIR HILL, MARYLAND,
 JU3845'2.5 MILES NORTHWEST OF NEWARK, DELAWARE.  THE STONE IS 12-INCHES
 JU3845'SQUARE, MARKED WITH THE LETTER M ON THE WEST SIDE AND THE LETTER
 JU3845'P ON THE EAST SIDE AND PROJECTS ABOUT 12 INCHES ABOVE THE SURFACE
 JU3845'OF THE GROUND.
 JU3845'
 JU3845'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION SCOUTS,
 JU3845'DISTANCE BEING 13.173 METERS EAST-SOUTHEAST OF STATION SCOUTS.
 JU3845'
 JU3845'TO REACH THE STATION SCOUTS FROM THE POST OFFICE IN NEWARK, DELAWARE.
 JU3845'GO WEST ON MAIN STREET FOR 0.4 MILE TO A TRIPLE FORKS AT A RAILROAD
 JU3845'CROSSING.  CROSS THE TRACKS AND TAKE THE RIGHT HAND FORK OF THREE
 JU3845'AND GO NORTHWEST ON STATE HIGHWAY 896 FOR 2.25 MILES TO A
 JU3845'CROSSROAD.  TURN LEFT AND GO WEST ON A BLACKTOP ROAD FOR 0.45
 JU3845'MILE TO A GRAVELED ROAD ON THE RIGHT, NORTH, JUST AFTER CROSSING
 JU3845'A BRIDGE, AND A LOCKED POLE AND PIPE GATE, KEY WAS OBTAINED
 JU3845'FROM MR. WILEY AT THIS DATE.  PASS THROUGH THE GATE AND GO
 JU3845'NORTHWEST, UPHILL, ON A BLADED ROAD FOR 0.2 MILE TO A
 JU3845'TRIANGULAR BLAZED TREE ON THE RIGHT, NORTH, SIDE OF THE ROAD AND
 JU3845'THE STATION AS DESCRIBED.
 JU3845'
 JU3845'BOUNDARY MONUMENT 86, A GRANITE STONE ABOUT 12 INCHES SQUARE
 JU3845'PROJECTING ABOUT 12 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS
 JU3845'THE MASON-DIXON STATE LINE MONUMENT WITH THE LETTER M ON THE WEST
 JU3845'SIDE AND LETTER P ON THE EAST SIDE.  A SMALL CROSS WAS ETCHED AT
 JU3845'THE APEX AND CENTER OF THE MONUMENT AS A CENTER POINT TO MEASURE
 JU3845'TO.
 JU3845
 JU3845                          STATION RECOVERY (2007)
 JU3845
 JU3845'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3845'THE STONE IS IN GOOD CONDITION AND PROJECTS 14 INCHES.  IT IS LOCATED
 JU3845'IN A WOODED AREA THAT IS SLATED FOR HOUSING DEVELOPMENT.  TO REACH
 JU3845'FROM EXIT 100B OFF INTERSTATE HIGHWAY 95 SOUTH OF NEWARK, DE, GO
 JU3845'NORTHEAST ON MD STATE HIGHWAY 279/DE STATE HIGHWAY 3 FOR ABOUT 2.5
 JU3845'MILES TO THE INTERSECTION WITH CASHO MILLS ROAD. TURN LEFT AND GO
 JU3845'NORTHWEST AND NORTH ON CASHO MILLS ROAD AND NEW CASHO MILLS ROAD FOR
 JU3845'ABOUT 1.4 MILES TO THE INTERSECTION WITH DELAWARE STATE HIGHWAY 273
 JU3845'(NOTTINGHAM ROAD).  TURN LEFT AND GO NORTHWEST ON DELAWARE STATE
 JU3845'HIGHWAY 273 FOR ABOUT 0.7 MILES TO THE INTERSECTION WITH WEDGEWOOD
 JU3845'ROAD.  TURN RIGHT AND GO NORTH ON WEDGEWOOD ROAD FOR ABOUT 0.7 MILES
 JU3845'TO THE INTERSECTION WITH BENNINGTON DRIVE.  TURN LEFT AND GO WEST ON
 JU3845'BENNINGTON DRIVE FOR ABOUT 0.1 MILES TO THE INTERSECTION WITH
 JU3845'CHIPPENHAM DRIVE.  TURN RIGHT AND GO NORTH ON CHIPPENHAM DRIVE FOR
 JU3845'ABOUT 0.2 MILES TO HOUSE NUMBER 13 ON THE LEFT.  FROM THE SOUTHWEST
 JU3845'CORNER OF THE HOUS, PACK SOUTHWEST THROUGH THE YARD FOR ABOUT 75 FEET
 JU3845'TO THE WOODED AREA.  CONTINUE SOUTHWEST AND SOUTH FOR ANOTHER 100 FEET
 JU3845'TO THE STONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3850 ***********************************************************************
 JU3850  DESIGNATION -  BOUNDARY MONUMENT 83 DE MD
 JU3850  PID         -  JU3850
 JU3850  STATE/COUNTY-  MD/CECIL
 JU3850  COUNTRY     -  US
 JU3850  USGS QUAD   -  NEWARK WEST (2016)
 JU3850
 JU3850                         *CURRENT SURVEY CONTROL
 JU3850  ______________________________________________________________________
 JU3850* NAD 83(1991) POSITION- 39 39 47.81857(N) 075 47 20.25177(W)   ADJUSTED
 JU3850* NAVD 88 ORTHO HEIGHT -    36.3   (meters)      119.    (feet) VERTCON3
 JU3850  ______________________________________________________________________
 JU3850  GEOID HEIGHT    -        -33.039 (meters)                     GEOID18
 JU3850  LAPLACE CORR    -          1.08  (seconds)                    DEFLEC18
 JU3850  HORZ ORDER      -  SECOND
 JU3850
 JU3850.The horizontal coordinates were established by classical geodetic methods
 JU3850.and adjusted by the National Geodetic Survey in January 1992.
 JU3850
 JU3850.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3850.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3850
 JU3850.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3850.GEOID18 height accuracy estimate available here.
 JU3850
 JU3850.Click photographs - Photos may exist for this station.
 JU3850
 JU3850.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3850
 JU3850. The following values were computed from the NAD 83(1991) position.
 JU3850
 JU3850;                    North         East     Units Scale Factor Converg.
 JU3850;SPC MD       -   222,333.469   503,923.191   MT  1.00004428   +0 45 36.3
 JU3850;SPC MD       -   729,439.06  1,653,288.00   sFT  1.00004428   +0 45 36.3
 JU3850;SPC PA S     -    38,504.682   768,275.618   MT  1.00005320   +1 16 20.3
 JU3850;SPC PA S     -   126,327.44  2,520,584.26   sFT  1.00005320   +1 16 20.3
 JU3850;UTM  18      - 4,390,683.416   432,324.693   MT  0.99965639   -0 30 12.9
 JU3850
 JU3850!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3850!SPC MD       -   0.99999949  x   1.00004428  =   1.00004377
 JU3850!SPC PA S     -   0.99999949  x   1.00005320  =   1.00005269
 JU3850!UTM  18      -   0.99999949  x   0.99965639  =   0.99965588
 JU3850
 JU3850:                Primary Azimuth Mark                     Grid Az
 JU3850:SPC MD       -  BOUNDARY MON 83 AZ MK                    297 40 57.7
 JU3850:SPC PA S     -  BOUNDARY MON 83 AZ MK                    297 10 13.7
 JU3850:UTM  18      -  BOUNDARY MON 83 AZ MK                    298 56 46.9
 JU3850
 JU3850_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3232490683(NAD 83)
 JU3850
 JU3850|---------------------------------------------------------------------|
 JU3850| PID    Reference Object                     Distance      Geod. Az  |
 JU3850|                                                           dddmmss.s |
 JU3850| JU3849 BOUNDARY ARC STONE 5 DE MD          221.891 METERS 00122     |
 JU3850| JU3831 NEWARK E I DUPONT STINE LAB TK      349.694 METERS 13546     |
 JU3850| CB2264 BOUNDARY MON 83 RM 1                 33.057 METERS 15842     |
 JU3850| JU3851 BOUNDARY ARC STONE 2 DE MD          400.047 METERS 1803904.8 |
 JU3850| JU3852 BOUNDARY ARC STONE 3 DE MD          387.657 METERS 18048     |
 JU3850| JU4154 A POINT MDSHA                        83.715 METERS 21040     |
 JU3850| CB2265 BOUNDARY MON 83 RM 2                 28.452 METERS 25711     |
 JU3850| CB2263 BOUNDARY MON 83 AZ MK                              2982634.0 |
 JU3850|---------------------------------------------------------------------|
 JU3850
 JU3850                          SUPERSEDED SURVEY CONTROL
 JU3850
 JU3850  NAD 83(1986)-  39 39 47.81261(N)    075 47 20.25818(W) AD(       ) 2
 JU3850  NAD 27      -  39 39 47.41820(N)    075 47 21.49260(W) AD(       ) 2
 JU3850  NGVD 29 (03/25/91)   36.7    (m)          120.     (f) VERT ANG       
 JU3850  NGVD 29 (07/19/86)   36.6    (m)          120.     (f) VERT ANG       
 JU3850
 JU3850.Superseded values are not recommended for survey control.
 JU3850
 JU3850.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3850.See file dsdata.pdf to determine how the superseded data were derived.
 JU3850
 JU3850_MARKER: 71 = BOUNDARY MONUMENT
 JU3850_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3850+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2010
 JU3850
 JU3850  HISTORY     - Date     Condition        Report By
 JU3850  HISTORY     - 1961     FIRST OBSERVED   CGS
 JU3850  HISTORY     - 20080612 GOOD             GEOCAC
 JU3850  HISTORY     - 20100925 GOOD             GEOCAC
 JU3850
 JU3850                          STATION DESCRIPTION
 JU3850
 JU3850'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3850'THIS POINT ALSO IDENTIFIED AS BOUNDARY ARC STONE 4 DE MD.
 JU3850'
 JU3850'THE STATION IS LOCATED ABOUT 2.5 MILES SOUTHWEST OF NEWARK,
 JU3850'DELAWARE, 2.0 MILES EAST-SOUTHEAST OF ELK MILLS MARYLAND, ON
 JU3850'PROPERTY OF E.I. DUPONT AND COMPANY, INCORPORATED, STINE
 JU3850'LABORATORIES.
 JU3850'
 JU3850'TO REACH THE STATION FROM THE POST OFFICE IN NEWARK, DELAWARE.  GO
 JU3850'WEST ON MAIN STREET FOR 0.4 MILE TO A TRIPLE FORKS AT A RAILROAD
 JU3850'CROSSING.  TAKE THE LEFT HAND FORK OF THREE AND GO SOUTH-SOUTHWEST
 JU3850'ON STATE HIGHWAY 2, ELKTON ROAD, FOR 2.05 MILES TO THE SECOND
 JU3850'ENTRANCE OF THE STINE LABORATORIES ON THE RIGHT.  TURN RIGHT AND
 JU3850'GO NORTH FOR 0.05 MILE TO A STEEL GATE AND GUARD BUILDING.  PASS
 JU3850'THROUGH THE GATE, REGISTER WITH GUARD, AND CONTINUE NORTH FOR
 JU3850'ABOUT 200.0 FEET TO A T-STREET INTERSECTION.  TURN LEFT AND GO
 JU3850'WEST FOR 0.05 MILE, THENCE NORTH FOR 0.15 MILE ON THE PAVED
 JU3850'STREET, THENCE WEST FOR 0.05 MILE TO A STEEL GATE.  TURN
 JU3850'RIGHT, PASS THROUGH THE GATE, AND GO NORTHWEST AND NORTH ON A
 JU3850'GRAVELED ROAD FOR 0.1 MILE TO THE SOUTHWEST CORNER OF A SMALL
 JU3850'ORCHARD.  CONTINUE NORTH ALONG THE WEST SIDE OF THE
 JU3850'ORCHARD FOR 0.1 MILE TO A FORK OF DIM TRACK ROADS AT THE
 JU3850'NORTHWEST CORNER OF THE ORCHARD.  TAKE THE RIGHT HAND FORK AND
 JU3850'CONTINUE NORTH ON THE DIM TRACK ROAD FOR ABOUT 120 FEET TO
 JU3850'THE MONUMENT AND STATION.
 JU3850'
 JU3850'THE STATION IS BOUNDARY MONUMENT NO. 83, A 12 INCH SQUARE GRANITE
 JU3850'STONE WITH THE LETTER M ON THE WEST SIDE AND LETTER D ON THE
 JU3850'EAST SIDE.  IT PROJECTS ABOUT 14 INCHES AND IS INCLOSED BY A
 JU3850'POLE FENCE.  IT IS 121.0 FEET NORTH OF THE NORTHWEST CORNER OF AN
 JU3850'ORCHARD AND INTERSECTION OF DIM FORKS AND 100.0 FEET EAST OF A
 JU3850'TRACK ROAD.  A CROSS AT THE APEX AND CENTER OF THE STONE IS THE
 JU3850'STATION POINT.
 JU3850'
 JU3850'REFERENCE MARK 1, A STANDARD DISK STAMPED BDY MON 83 NO 1 1961, IS
 JU3850'SET IN TOP OF A SQUARE CONCRETE MONUMENT PROJECTING ABOUT 2 INCHES
 JU3850'ABOVE THE SURFACE OF THE GROUND.  IT IS 52.0 FEET EAST OF THE
 JU3850'NORTHWEST CORNER OF ORCHARD AND DIM TRACK ROAD FORK.
 JU3850'
 JU3850'REFERENCE MARK 2, A STANDARD DISK STAMPED BDY MON 83 NO 2 1961,
 JU3850'IS SET IN TOP OF A SQUARE CONCRETE MONUMENT PROJECTING ABOUT 2
 JU3850'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 6.5 FEET EAST OF
 JU3850'A DIM TRACK ROAD.
 JU3850'
 JU3850'THE AZIMUTH MARK, A STANDARD DISK STAMPED BDY MON 83 1961, IS
 JU3850'SET IN TOP OF A SQUARE CONCRETE MONUMENT PROJECTING ABOUT 2
 JU3850'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 10.6 FEET
 JU3850'EAST-SOUTHEAST OF A 10-INCH MAPLE TREE AND 2.0 FEET SOUTHEAST OF
 JU3850'A STANDARD METAL WITNESS POST AND MARKER.
 JU3850'
 JU3850'TO REACH THE AZIMUTH MARK FROM THE STATION.  GO NORTH ON THE
 JU3850'DIM TRACK ROAD FROM THE DIM FORKS AT THE NORTHWEST CORNER OF THE
 JU3850'ORCHARD, FOR 0.1 MILE TO THE SOUTH EDGE OF A TIMBER-LINE.  TURN
 JU3850'LEFT AND GO WEST ALONG THE SOUTH EDGE OF TIMBER FOR 0.05
 JU3850'MILE TO A STANDARD METAL WITNESS POST AND MARKER AND THE AZIMUTH
 JU3850'MARK AS DESCRIBED.
 JU3850'
 JU3850'ARC STONE NO 2 1765, AN UNMARKED STONE.  IT HAS BEEN BROKEN
 JU3850'OFF AT GROUND LEVEL AND NOW SETS ON OLD BASE OR WHAT IS BELIEVED
 JU3850'TO BE OLD BASE AT THE ORIGINAL LOCATION.  IT IS A 7 X 12 INCH STONE
 JU3850'PROJECTING ABOUT 28 INCHES ABOVE THE SURFACE OF THE GROUND, 200
 JU3850'FEET WEST OF THE CENTERLINE OF A DIM TRACK ROAD AND 63.4 FEET
 JU3850'NORTH OF AN EAST AND WEST FENCELINE AND NORTH EDGE OF TIMBERLINE
 JU3850'AND INCLOSED WITH A POLE FENCE.
 JU3850'
 JU3850'ARC STONE NO. 3 1849, WAS PLACED AT THE CENTER OF THE, MERIDIAN,
 JU3850'OF THE ARC BY GRAHAMS SURVEY IN 1849.  IT IS A 8 X 12 INCH
 JU3850'GRANITE STONE PROJECTING ABOUT 25 INCHES ABOVE THE SURFACE OF
 JU3850'THE GROUND.  A SMALL CROSS WAS ETCHED AT THE APEX AND CENTER OF
 JU3850'THE STONE TO HOLD AS A CENTER POINT FOR MEASURING.  THE LETTER M
 JU3850'ON THE WEST SIDE AND D, 1849 ON THE EAST SIDE OF THE STONE.  IT
 JU3850'IS ABOUT 200.0 FEET WEST OF THE CENTERLINE OF A DIM TRACK ROAD,
 JU3850'104.0 FEET NORTH OF AN EAST AND WEST FENCELINE AT THE NORTH
 JU3850'EDGE OF A TIMBERLINE AND 40.6 FEET NORTH OF ARC STONE NO. 2.
 JU3850'
 JU3850'ARC STONE NO. 5 1765, IS AN UNMARKED STONE PLACED ON THE ARC
 JU3850'IN 1765.  IT LEANS SLIGHTLY.  IT IS A 6 X 12 INCH STONE PROJECTING
 JU3850'ABOUT 14 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS ABOUT
 JU3850'500.0 FEET SOUTH-SOUTHWEST OF A BLACKTOP ROAD, 160.0 FEET
 JU3850'NORTHEAST OF THE WEST EDGE OF A TIMBERLINE AND 85.0 FEET
 JU3850'SOUTHEAST OF THE SOUTH EDGE OF A TIMBERLINE AND IS INCLOSED BY A
 JU3850'POLE FENCE.
 JU3850'
 JU3850'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JU3850
 JU3850                          STATION RECOVERY (2008)
 JU3850
 JU3850'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 JU3850'THE STONE IS IN AN UNCULTIVATED FIELD ON THE GROUNDS OF THE
 JU3850'STINE-HASKELL RESEARCH CENTER, A SUBSIDIARY OF DU PONT.  THE STONE IS
 JU3850'A LIMESTONE SHAFT WITH THE LETTER M CUT INTO THE WEST FACE AND THE
 JU3850'LETTER P (NOT D) CUT INTO THE EAST FACE.  A CHISELED CROSS AT THE
 JU3850'APEX OF THE TOP IS BARELY DISCERNABLE.  THE STONE PROJECTS ABOUT 14
 JU3850'INCHES.  ACCESS TO THE STONE IS WITH THE PERMISSION OF AND UNDER THE
 JU3850'SUPERVISION OF THE CENTER'S SECURITY STAFF.  THE SECURITY OFFICE IS
 JU3850'ADJACENT TO THE MAIN GATE.
 JU3850
 JU3850                          STATION RECOVERY (2010)
 JU3850
 JU3850'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU3850'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3853 ***********************************************************************
 JU3853  DESIGNATION -  BOUNDARY MONUMENT 84 DEL MD
 JU3853  PID         -  JU3853
 JU3853  STATE/COUNTY-  MD/CECIL
 JU3853  COUNTRY     -  US
 JU3853  USGS QUAD   -  NEWARK WEST (2016)
 JU3853
 JU3853                         *CURRENT SURVEY CONTROL
 JU3853  ______________________________________________________________________
 JU3853* NAD 83(1991) POSITION- 39 40 42.10540(N) 075 47 18.94434(W)   ADJUSTED
 JU3853* NAVD 88 ORTHO HEIGHT -    50.9   (meters)      167.    (feet) VERTCON3
 JU3853  ______________________________________________________________________
 JU3853  GEOID HEIGHT    -        -33.019 (meters)                     GEOID18
 JU3853  LAPLACE CORR    -          0.78  (seconds)                    DEFLEC18
 JU3853  HORZ ORDER      -  SECOND
 JU3853
 JU3853.The horizontal coordinates were established by classical geodetic methods
 JU3853.and adjusted by the National Geodetic Survey in January 1992.
 JU3853
 JU3853.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3853.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3853
 JU3853.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3853.GEOID18 height accuracy estimate available here.
 JU3853
 JU3853.Click photographs - Photos may exist for this station.
 JU3853
 JU3853.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3853
 JU3853. The following values were computed from the NAD 83(1991) position.
 JU3853
 JU3853;                    North         East     Units Scale Factor Converg.
 JU3853;SPC MD       -   224,008.083   503,932.136   MT  1.00004793   +0 45 37.1
 JU3853;SPC MD       -   734,933.19  1,653,317.35   sFT  1.00004793   +0 45 37.1
 JU3853;UTM  18      - 4,392,356.773   432,370.552   MT  0.99965631   -0 30 12.7
 JU3853
 JU3853!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3853!SPC MD       -   0.99999720  x   1.00004793  =   1.00004513
 JU3853!UTM  18      -   0.99999720  x   0.99965631  =   0.99965351
 JU3853
 JU3853_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3237092356(NAD 83)
 JU3853
 JU3853                          SUPERSEDED SURVEY CONTROL
 JU3853
 JU3853  NAD 83(1986)-  39 40 42.09961(N)    075 47 18.95070(W) AD(       ) 2
 JU3853  NAD 27      -  39 40 41.70680(N)    075 47 20.18410(W) AD(       ) 2
 JU3853  NGVD 29 (07/19/86)   51.2    (m)          168.     (f) VERT ANG       
 JU3853
 JU3853.Superseded values are not recommended for survey control.
 JU3853
 JU3853.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3853.See file dsdata.pdf to determine how the superseded data were derived.
 JU3853
 JU3853_MARKER: V = STONE MONUMENT
 JU3853_SETTING: 0 = UNSPECIFIED SETTING
 JU3853_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3853_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3853+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2010
 JU3853
 JU3853  HISTORY     - Date     Condition        Report By
 JU3853  HISTORY     - 1961     MONUMENTED       CGS
 JU3853  HISTORY     - 20100925 GOOD             GEOCAC
 JU3853
 JU3853                          STATION DESCRIPTION
 JU3853
 JU3853'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3853'THE STATION IS LOCATED ABOUT 3.0 MILES SOUTH OF THE PENNSYLVANIA
 JU3853'STATE LINE, 2-1/2 MILES NORTHEAST OF ELK MILLS, MARYLAND, 2.0
 JU3853'MILES WEST-SOUTHWEST OF NEWARK, DELAWARE AND ON PROPERTY OWNED BY
 JU3853'MR. CLARENCE S. FOSTER.  IT IS A 15-INCH SQUARE GRANITE MONUMENT
 JU3853'PROJECTING ABOUT 2-1/2 FEET ABOVE THE SURFACE OF THE GROUND AND
 JU3853'LEANS TO THE SOUTH AT ABOUT A 15 DEGREE ANGLE.  THE UPPER EDGES
 JU3853'ARE CHIPPED BADLY AND MARKED WITH A M ON THE WEST SIDE AND A P
 JU3853'ON THE EAST SIDE.  IT IS 59.0 FEET NORTHEAST OF THE SOUTHWEST
 JU3853'FENCECORNER AND 42.3 FEET NORTH OF THE EAST AND WEST
 JU3853'FENCELINE.
 JU3853'
 JU3853'TO REACH THE STATION FROM THE POST OFFICE IN NEWARK, DELAWARE,
 JU3853'GO WEST ON MAIN STREET FOR 0.4 MILE TO A TRIPLE FORK, KEEP THE
 JU3853'LEFT FORK AND GO SOUTH-SOUTHWEST ON STATE HIGHWAY 2 AND ELKTON
 JU3853'ROAD FOR 0.4 MILE TO A PAVED SIDE ROAD, RIGHT, TURN RIGHT AND
 JU3853'GO WEST ON THE PAVED ROAD FOR 1.4 MILES TO A SIDE ROAD, RIGHT AND
 JU3853'THE AZIMAUTH MARK LOCATED ON THE LEFT, SOUTH SIDE OF THE ROAD.
 JU3853'TURN RIGHT AND GO NORTH ON THE GRAVELED ROAD FOR 0.2 MILE TO A
 JU3853'DRIVEWAY RIGHT, LEADING TO THE RESIDENCE OF MR. CLARENCE S.
 JU3853'FOSTER, TURN RIGHT AND GO WEST ON THE DRIVEWAY FOR ABOUT 0.05
 JU3853'MILE TO A GATE ON THE RIGHT, TURN RIGHT THROUGH THE GATE AND
 JU3853'GO SOUTH-SOUTHWEST ACROSS THE BARN LOT FOR 0.07 MILE TO THE
 JU3853'SOUTHWEST CORNER OF THE BARN LOT AND THE STATION AS
 JU3853'DESCRIBED.
 JU3853'
 JU3853'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION FOSTER,
 JU3853'DISTANCE BEING 8.679 METERS AND 28.48 FEET NORTHEAST OF STATION
 JU3853'FOSTER.
 JU3853
 JU3853                          STATION RECOVERY (2010)
 JU3853
 JU3853'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU3853'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3913 ***********************************************************************
 JU3913  DESIGNATION -  BOUNDARY MONUMENT 80 DEL MD
 JU3913  PID         -  JU3913
 JU3913  STATE/COUNTY-  MD/CECIL
 JU3913  COUNTRY     -  US
 JU3913  USGS QUAD   -  ELKTON (2016)
 JU3913
 JU3913                         *CURRENT SURVEY CONTROL
 JU3913  ______________________________________________________________________
 JU3913* NAD 83(1991) POSITION- 39 37 13.89138(N) 075 47 10.58926(W)   ADJUSTED
 JU3913* NAVD 88 ORTHO HEIGHT -    31.6   (meters)      104.    (feet) VERTCON3
 JU3913  ______________________________________________________________________
 JU3913  GEOID HEIGHT    -        -33.085 (meters)                     GEOID18
 JU3913  LAPLACE CORR    -          1.35  (seconds)                    DEFLEC18
 JU3913  HORZ ORDER      -  SECOND
 JU3913
 JU3913.The horizontal coordinates were established by classical geodetic methods
 JU3913.and adjusted by the National Geodetic Survey in January 1992.
 JU3913
 JU3913.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3913.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3913
 JU3913.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3913.GEOID18 height accuracy estimate available here.
 JU3913
 JU3913.Click photographs - Photos may exist for this station.
 JU3913
 JU3913.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3913
 JU3913. The following values were computed from the NAD 83(1991) position.
 JU3913
 JU3913;                    North         East     Units Scale Factor Converg.
 JU3913;SPC MD       -   217,589.486   504,216.620   MT  1.00003428   +0 45 42.4
 JU3913;SPC MD       -   713,874.84  1,654,250.69   sFT  1.00003428   +0 45 42.4
 JU3913;UTM  18      - 4,385,935.935   432,513.377   MT  0.99965607   -0 30 05.1
 JU3913
 JU3913!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3913!SPC MD       -   1.00000023  x   1.00003428  =   1.00003451
 JU3913!UTM  18      -   1.00000023  x   0.99965607  =   0.99965630
 JU3913
 JU3913_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3251385935(NAD 83)
 JU3913
 JU3913                          SUPERSEDED SURVEY CONTROL
 JU3913
 JU3913  NAD 83(1986)-  39 37 13.88501(N)    075 47 10.59612(W) AD(       ) 2
 JU3913  NAD 27      -  39 37 13.49580(N)    075 47 11.83040(W) AD(       ) 2
 JU3913  NGVD 29 (07/19/86)   31.9    (m)          105.     (f) VERT ANG       
 JU3913
 JU3913.Superseded values are not recommended for survey control.
 JU3913
 JU3913.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3913.See file dsdata.pdf to determine how the superseded data were derived.
 JU3913
 JU3913_MARKER: N = NAIL
 JU3913_SETTING: 0 = UNSPECIFIED SETTING
 JU3913_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3913_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3913+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2010
 JU3913
 JU3913  HISTORY     - Date     Condition        Report By
 JU3913  HISTORY     - 1961     MONUMENTED       CGS
 JU3913  HISTORY     - 20070608 GOOD             GEOCAC
 JU3913  HISTORY     - 20100925 GOOD             GEOCAC
 JU3913
 JU3913                          STATION DESCRIPTION
 JU3913
 JU3913'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3913'THE STATION IS LOCATED ABOUT 2.5 MILES EAST-NORTHEAST OF ELKTON,
 JU3913'MARYLAND, 2.5 MILES NORTHWEST OF GLASGOW, DELAWARE.  IT IS A
 JU3913'9 X 12-INCH STONE PROJECTING ABOUT 20 INCHES ABOVE THE SURFACE
 JU3913'OF THE GROUND, AT THE APEX AND CENTER OF THE STONE IS A NAIL, THE
 JU3913'NAIL HEAD MARKING THE CENTER OF THE MONUMENT.  THE STONE IS IN
 JU3913'GOOD CONDITION.  ON THE SIDES OF THE STONE IS INSCRIBED THE COAT
 JU3913'OF ARMS.
 JU3913'
 JU3913'TO REACH STATION OLAH FROM THE COURTHOUSE IN ELKTOWN,
 JU3913'MARYLAND.  GO EAST ON MAIN STREET AND CONTINUE ON A BLACKTOP ROAD
 JU3913'FOR 1.2 MILES TO THE INTERSECTION OF A BLACKTOP ROAD ON THE
 JU3913'RIGHT, SOUTHWEST SIDE OF THE HIGHWAY.* TURN RIGHT AND GO
 JU3913'SOUTHWEST ON THE BLACKTOP ROAD FOR 0.35 MILE TO POWERLINE POLE
 JU3913'NO. 70, A GRAVELED SIDE ROAD INTERSECTION, A STANDARD METAL
 JU3913'WITNESS POST AND MARKER AND THE AZIMUTH MARK.  *CONTINUE EAST
 JU3913'ON THE BLACKTOP ROAD FOR 0.3 MILE TO A GRAVELED DRIVEWAY ON THE
 JU3913'RIGHT, SOUTH, SIDE OF THE HIGHWAY.  TURN INTO THE DRIVEWAY,
 JU3913'THENCE LEFT ONTO A DIM TRACK ROAD AND GO SOUTHEAST ACROSS
 JU3913'A SMALL MEADOW FOR 0.1 MILE TO STATION OLAH AND BOUNDARY MONUMENT
 JU3913'NO. 80.
 JU3913'
 JU3913'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION OLAH,
 JU3913'DISTANCE BEING 8.088 METERS NORTHEAST OF STATION OLAH.  THE
 JU3913'MONUMENT IS AT THE WEST EDGE OF A HEDGE ROW.
 JU3913
 JU3913                          STATION RECOVERY (2007)
 JU3913
 JU3913'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JU3913'TO REACH FROM EXIT 1 OFF INTERSTATE HIGHWAY 95 SOUTH OF NEWARK, DE, GO
 JU3913'SOUTH ON DELAWARE STATE HIGHWAY 896 (SOUTH COLLEGE AVE) FOR ABOUT 0.7
 JU3913'MILES TO THE INTERSECTION WITH DELAWARE STATE HIGHWAY 281 (OLD
 JU3913'BALTIMORE PIKE).  TURN RIGHT AND GO SOUTHWEST ON DELAWARE STATE
 JU3913'HIGHWAY 281 FOR ABOUT 2.6 MILES TO THE STATE BOUNDARY LINE AND A
 JU3913'GRAVEL DRIVEWAY LEADING SOUTH AT MAILBOX NUMBER 1790, BELLE AMYR
 JU3913'FARMS.  TURN LEFT AND GO SOUTH ON THE GRAVEL DRIVE FOR ABOUT 130 YARDS
 JU3913'TO A RED BARN.  FROM THE NORTH DOOR OF THE BARN, PACK WEST FOR ABOUT
 JU3913'40 FEET TO THE STONE.
 JU3913
 JU3913                          STATION RECOVERY (2010)
 JU3913
 JU3913'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU3913'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7947 ***********************************************************************
 DH7947  DESIGNATION -  BOUNDRY MARK=STERLINGS AXLE
 DH7947  PID         -  DH7947
 DH7947  STATE/COUNTY-  MD/SOMERSET
 DH7947  COUNTRY     -  US
 DH7947  USGS QUAD   -  CRISFIELD (2016)
 DH7947
 DH7947                         *CURRENT SURVEY CONTROL
 DH7947  ______________________________________________________________________
 DH7947* NAD 83(1986) POSITION- 37 59 05.7    (N) 075 50 37.1    (W)   HD_HELD2
 DH7947* NAVD 88 ORTHO HEIGHT -     1.821 (meters)        5.97  (feet) ADJUSTED
 DH7947  ______________________________________________________________________
 DH7947  GEOID HEIGHT    -        -36.096 (meters)                     GEOID18
 DH7947  DYNAMIC HEIGHT  -          1.820 (meters)        5.97  (feet) COMP
 DH7947  MODELED GRAVITY -    979,972.2   (mgal)                       NAVD 88
 DH7947
 DH7947  VERT ORDER      -  SECOND    CLASS I
 DH7947
 DH7947.The horizontal coordinates were established by autonomous hand held GPS
 DH7947.observations and have an estimated accuracy of +/- 10 meters.
 DH7947
 DH7947.The orthometric height was determined by differential leveling and
 DH7947.adjusted by the NATIONAL GEODETIC SURVEY
 DH7947.in February 2006.
 DH7947
 DH7947.No vertical observational check was made to the station.
 DH7947
 DH7947.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7947.GEOID18 height accuracy estimate available here.
 DH7947
 DH7947.Click photographs - Photos may exist for this station.
 DH7947
 DH7947.The dynamic height is computed by dividing the NAVD 88
 DH7947.geopotential number by the normal gravity value computed on the
 DH7947.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7947.degrees latitude (g = 980.6199 gals.).
 DH7947
 DH7947.The modeled gravity was interpolated from observed gravity values.
 DH7947
 DH7947;                    North         East    Units  Estimated Accuracy
 DH7947;SPC MD       -    35,971.      501,591.      MT  (+/- 10 meters HH2 GPS)
 DH7947
 DH7947_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2591404477(NAD 83)
 DH7947
 DH7947                          SUPERSEDED SURVEY CONTROL
 DH7947
 DH7947.No superseded survey control is available for this station.
 DH7947
 DH7947_MARKER: Z = SEE DESCRIPTION
 DH7947_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 DH7947_MAGNETIC: N = NO MAGNETIC MATERIAL
 DH7947_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH7947
 DH7947  HISTORY     - Date     Condition        Report By
 DH7947  HISTORY     - UNK      MONUMENTED       NONE
 DH7947  HISTORY     - 20051026 GOOD             NGS
 DH7947  HISTORY     - 20210927 GOOD             PROFLN
 DH7947
 DH7947                          STATION DESCRIPTION
 DH7947
 DH7947'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DH7947'THE STATION IS LOCATED ABOUT 5.5 MI (8.85 KM) SOUTHWEST OF MARION, 2.3
 DH7947'MI (3.7 KM) SOUTHWEST OF HOPEWELL AND 0.6 MI (0.97 KM) EAST OF
 DH7947'CRISFIELD.
 DH7947'
 DH7947'TO REACH THE STATION FROM THE JUNCTION OF MARYLAND AVENUE RICHERSON
 DH7947'AVENUE, JACKSONVILLE ROAD AND SOMERSET AVENUE NEAR THE NORTH CITY
 DH7947'WATER TANK.  GO 0.3 MI (0.48 KM) SOUTHWEST ALONG SOMERSET AVENUE TO
 DH7947'THE JUNCTION OF DENNIS LANE ON THE LEFT, TURN LEFT SOUTHEAST FOR 0.05
 DH7947'MI (0.08 KM) ON DENNIS LANE TO ITS END AT HOUSE 199 MR PHILIP
 DH7947'GOLDSBOROUGH RESIDENCE, CONTINUE ON FOOT SOUTHWEST TO THE NORTHWEST
 DH7947'CORNER OF THE PROPERTY OF HOUSE NO 199 DENNIS LANE.  THE STATION IS
 DH7947'LOCATED AT THE CORNER OF SOMERSET CO PROPERTY AND AT THE SOUTHWEST
 DH7947'CORNER OF THE PROPERTY.
 DH7947'
 DH7947'IT IS AN OLD WAGON AXEL DRIVEN IN THE GROUND 2.4 FT (0.7 M) ABOVE
 DH7947'GROUND, 9.4 FT (2.9 M) SOUTHWEST OF A FRAME ADDITION OF A CONCRETE
 DH7947'BLOCK STORAGE BUILDING, 0.5 FT (0.2 M) NORTH OF A 4X4 INCH (10 CM)
 DH7947'CONCRETE PREFAB MARKER WITH A 4 INCH (10 CM) US COAST GUARD MARK
 DH7947'UNSTAMPED, 173.0 FT (52.7 M) SOUTHWEST OF THE CENTERLINE OF DENNIS
 DH7947'LANE, 186.7 FT (56.9 M) NORTHWEST OF A 4X4 CONCRETE PREFAB MARK WITH A
 DH7947'US COAST GUARD MARK LOCATED AT THE SOUTH CORNER OF HOUSE NO 199 DENNIS
 DH7947'LANE, AND 1.0 FT (0.3 M) SOUTH OF FIBERGLASS WITNESS POST.  NOTE--NO
 DH7947'STAMPING.
 DH7947
 DH7947                          STATION RECOVERY (2021)
 DH7947
 DH7947'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 DH7947'RECOVERED AS DESCRIBED WITH MR. GOLDSBORUGH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7945 ***********************************************************************
 DH7945  DESIGNATION -  BOUNDRY MARKER=SOMERS COVE
 DH7945  PID         -  DH7945
 DH7945  STATE/COUNTY-  MD/SOMERSET
 DH7945  COUNTRY     -  US
 DH7945  USGS QUAD   -  CRISFIELD (2016)
 DH7945
 DH7945                         *CURRENT SURVEY CONTROL
 DH7945  ______________________________________________________________________
 DH7945* NAD 83(1986) POSITION- 37 58 43.0    (N) 075 51 15.2    (W)   HD_HELD2
 DH7945* NAVD 88 ORTHO HEIGHT -     0.224 (meters)        0.73  (feet) ADJUSTED
 DH7945  ______________________________________________________________________
 DH7945  GEOID HEIGHT    -        -36.096 (meters)                     GEOID18
 DH7945  DYNAMIC HEIGHT  -          0.224 (meters)        0.73  (feet) COMP
 DH7945  MODELED GRAVITY -    979,971.3   (mgal)                       NAVD 88
 DH7945
 DH7945  VERT ORDER      -  SECOND    CLASS I
 DH7945
 DH7945.The horizontal coordinates were established by autonomous hand held GPS
 DH7945.observations and have an estimated accuracy of +/- 10 meters.
 DH7945
 DH7945.The orthometric height was determined by differential leveling and
 DH7945.adjusted by the NATIONAL GEODETIC SURVEY
 DH7945.in February 2006.
 DH7945
 DH7945.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7945.GEOID18 height accuracy estimate available here.
 DH7945
 DH7945.Click photographs - Photos may exist for this station.
 DH7945
 DH7945.The dynamic height is computed by dividing the NAVD 88
 DH7945.geopotential number by the normal gravity value computed on the
 DH7945.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7945.degrees latitude (g = 980.6199 gals.).
 DH7945
 DH7945.The modeled gravity was interpolated from observed gravity values.
 DH7945
 DH7945;                    North         East    Units  Estimated Accuracy
 DH7945;SPC MD       -    35,260.      500,670.      MT  (+/- 10 meters HH2 GPS)
 DH7945
 DH7945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2497903786(NAD 83)
 DH7945
 DH7945                          SUPERSEDED SURVEY CONTROL
 DH7945
 DH7945.No superseded survey control is available for this station.
 DH7945
 DH7945_MARKER: Z = SEE DESCRIPTION
 DH7945_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DH7945_PROJECTION: FLUSH
 DH7945_MAGNETIC: N = NO MAGNETIC MATERIAL
 DH7945_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DH7945+STABILITY: SURFACE MOTION
 DH7945_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7945+SATELLITE: SATELLITE OBSERVATIONS - October 26, 2005
 DH7945
 DH7945  HISTORY     - Date     Condition        Report By
 DH7945  HISTORY     - UNK      MONUMENTED       NONE
 DH7945  HISTORY     - 20051026 GOOD             NGS
 DH7945
 DH7945                          STATION DESCRIPTION
 DH7945
 DH7945'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DH7945'THE STATION IS LOCATED ABOUT 6.2 MI (9.98 KM) SOUTHWEST OF MARION, 3.1
 DH7945'MI (4.99 KM) SOUTHWEST OF HOPEWELL AND 0.3 MI (0.48 KM) SOUTH OF
 DH7945'CRISFIELD.  THE STATION IS IN THE CITY OF CRIFIELD.
 DH7945'TO REACH THE STATION FROM THE JUNCTION OF MAIN STREET AND 4TH STREET
 DH7945'LOCATED AT THE CITY POST OFFICE, GO 0.4 MI (0.64 KM) SOUTH ON 4TH
 DH7945'STREET TO THE INTERSECTION OF COVE STREET AND 7TH STREET AND THE
 DH7945'STATION ON THE EAST SIDE OF THE INTERSECTION OF 4TH STREET UNDER A 1
 DH7945'1/2 X 1 1/2 FT (0.5 M) SQUARE METAL PLATE 1 INCH (3 CM) THICK FLUSH
 DH7945'WITH 4TH STREET.  IT IS A 4 INCH (10 CM) SQUARE CONCRETE POST WITH A
 DH7945'PHILLIPS SCREW IN CENTER OF POST.
 DH7945'48.4 FT (14.8 M) SOUTHWEST OF SOUTHWEST FRONT PORCH OF HOUSE NUMBER
 DH7945'157 4TH STREET.  17.0 FT (5.2 M) NORTHWEST OF THE CENTER OF THE NORTH
 DH7945'ONE OF TWO METAL PLATE COVERS FOR A WATER LINE.  75.7 FT (23.1 M)
 DH7945'NORTHEAST OF THE NORTHEAST CORNER OF CHAIN LINK FENCE FOR THE MARINA.
 DH7945'8.7 FT (2.7 M) EAST OF CENTERLINE OF 4TH STREET.  16.0 FT (4.9 M)
 DH7945'NORTH OF THE CENTERLINE OF COVE STREET.  NOTE--NO STAMPING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5890 ***********************************************************************
 JV5890  DESIGNATION -  BOWIE
 JV5890  PID         -  JV5890
 JV5890  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5890  COUNTRY     -  US
 JV5890  USGS QUAD   -  LAUREL (2016)
 JV5890
 JV5890                         *CURRENT SURVEY CONTROL
 JV5890  ______________________________________________________________________
 JV5890* NAD 83(1991) POSITION- 39 00 38.35556(N) 076 45 36.91931(W)   ADJUSTED
 JV5890* NAVD 88 ORTHO HEIGHT -    64.3   (meters)      211.    (feet) VERTCON3
 JV5890  ______________________________________________________________________
 JV5890  GEOID HEIGHT    -        -32.584 (meters)                     GEOID18
 JV5890  LAPLACE CORR    -         -5.64  (seconds)                    DEFLEC18
 JV5890  HORZ ORDER      -  FIRST
 JV5890
 JV5890.The horizontal coordinates were established by classical geodetic methods
 JV5890.and adjusted by the National Geodetic Survey in January 1992.
 JV5890
 JV5890.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5890.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5890
 JV5890.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5890.GEOID18 height accuracy estimate available here.
 JV5890
 JV5890.Click photographs - Photos may exist for this station.
 JV5890
 JV5890.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5890
 JV5890. The following values were computed from the NAD 83(1991) position.
 JV5890
 JV5890;                    North         East     Units Scale Factor Converg.
 JV5890;SPC MD       -   149,216.213   420,764.093   MT  0.99995261   +0 09 01.7
 JV5890;SPC MD       -   489,553.53  1,380,456.86   sFT  0.99995261   +0 09 01.7
 JV5890;UTM  18      - 4,319,432.819   347,594.232   MT  0.99988601   -1 06 29.6
 JV5890
 JV5890!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5890!SPC MD       -   0.99999503  x   0.99995261  =   0.99994764
 JV5890!UTM  18      -   0.99999503  x   0.99988601  =   0.99988104
 JV5890
 JV5890:                Primary Azimuth Mark                     Grid Az
 JV5890:SPC MD       -  WHITE MARSH RESET                        130 03 13.7
 JV5890:UTM  18      -  WHITE MARSH RESET                        131 18 45.0
 JV5890
 JV5890_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4759419432(NAD 83)
 JV5890
 JV5890|---------------------------------------------------------------------|
 JV5890| PID    Reference Object                     Distance      Geod. Az  |
 JV5890|                                                           dddmmss.s |
 JV5890| JV5891 AIRPORT BCN SUBURBAN APT            APPROX. 8.7 KM 0023823.5 |
 JV5890| CA9995 BOWIE RM 1                           40.091 METERS 11646     |
 JV5890| JV4146 BOWIE RACE TRACK TANK               APPROX. 2.2 KM 1220955.5 |
 JV5890| HV9583 WHITE MARSH RESET                   APPROX. 4.7 KM 1301215.4 |
 JV5890| HV7240 BOWIE BELAIR WSSC TANK              APPROX. 4.4 KM 1584440.7 |
 JV5890| CA9996 BOWIE RM 2                           35.742 METERS 20412     |
 JV5890| JV6589 TU 1                                343.007 METERS 23223     |
 JV5890| JV5858 BOWIE W BOWIE WSSC TANK             APPROX. 1.7 KM 2851252.0 |
 JV5890| JV5888 BOWIE W BOWIE PEPCO MICROWAVE       APPROX. 1.1 KM 2964348.6 |
 JV5890|---------------------------------------------------------------------|
 JV5890
 JV5890                          SUPERSEDED SURVEY CONTROL
 JV5890
 JV5890  NAD 83(1986)-  39 00 38.35347(N)    076 45 36.93052(W) AD(       ) 1
 JV5890  NAD 27      -  39 00 37.95766(N)    076 45 38.04251(W) AD(       ) 1
 JV5890  NGVD 29 (07/19/86)   64.5    (m)          212.     (f) VERT ANG       
 JV5890
 JV5890.Superseded values are not recommended for survey control.
 JV5890
 JV5890.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5890.See file dsdata.pdf to determine how the superseded data were derived.
 JV5890
 JV5890_MARKER: DS = TRIANGULATION STATION DISK
 JV5890_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5890_STAMPING: BOWIE 1970
 JV5890_MARK LOGO: CGS
 JV5890_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV5890_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5890+STABILITY: SURFACE MOTION
 JV5890_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV5890+SATELLITE: SATELLITE OBSERVATIONS - September 05, 2003
 JV5890
 JV5890  HISTORY     - Date     Condition        Report By
 JV5890  HISTORY     - 1970     MONUMENTED       NGS
 JV5890  HISTORY     - 20030905 GOOD             GEOCAC
 JV5890
 JV5890                          STATION DESCRIPTION
 JV5890
 JV5890'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5890'THE STATION IS ABOUT 1 MILE WEST-NORTHWEST OF THE BOWIE RACE TRACK,
 JV5890'1 MILE WEST OF THE PRINCE GEORGES-ANNE ARUNDEL COUNTY LINE AND 1
 JV5890'MILE EAST OF WEST BOWIE, ON THE NORTH SIDE OF RACE TRACK ROAD.
 JV5890'
 JV5890'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 564 AND
 JV5890'197 IN WEST BOWIE, GO SOUTH ON HIGHWAY 197, CROSSING RAILROAD
 JV5890'OVERPASS FOR 0.15 MILE TO A CROSSROAD AND WHERE HIGHWAY 197
 JV5890'TURNS LEFT, EAST.  TURN LEFT AND GO EAST ON HIGHWAY 197 FOR 0.65
 JV5890'MILE TO A FORK.  TAKE THE LEFT FORK AND GO NORTHEAST ON RACETRACK
 JV5890'ROAD FOR 0.45 MILE TO THE STATION ON THE LEFT.
 JV5890'
 JV5890'STATION MARK IS A STANDARD DISK, STAMPED BOWIE 1970, SET IN THE
 JV5890'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS FLUSH
 JV5890'WITH THE GROUND SURFACE.  IT IS 58.0 FEET NORTHWEST OF THE
 JV5890'CENTERLINE OF RACETRACK ROAD, 13.7 FEET NORTH OF A TREE WITH A
 JV5890'TRIANGLE BLAZE ON THE NORTH SIDE, 10.5 FEET SOUTHWEST OF A TREE
 JV5890'WITH A TRIANGLE BLAZE ON THE SOUTHEAST SIDE AND 5.3 FEET SOUTH
 JV5890'OF A WITNESS POST.  THE UNDERGROUND MARK IS 36 INCHES BELOW THE
 JV5890'GROUND SURFACE.
 JV5890'
 JV5890'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED BOWIE NO 1 1970, SET
 JV5890'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV5890'PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 21.5 FEET SOUTH OF THE
 JV5890'CENTERLINE OF RACETRACK ROAD, 9.0 FEET SOUTH OF TELEPHONE LINE
 JV5890'POLE NUMBER P 39 AND ABOUT 2 FEET HIGHER THAN THE STATION.
 JV5890'
 JV5890'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED BOWIE NO 2 1970,
 JV5890'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV5890'THAT PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 21.5 FEET SOUTH
 JV5890'OF THE CENTERLINE OF RACETRACK ROAD, 6.8 FEET SOUTH OF A TELEPHONE
 JV5890'LINE JUNCTION POLE AND ABOUT 2 FEET LOWER THAN THE STATION.
 JV5890'
 JV5890'NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
 JV5890'
 JV5890'REFERENCE MARK 1 TO REFERENCE 2 OBSTRUCTED.
 JV5890
 JV5890                          STATION RECOVERY (2003)
 JV5890
 JV5890'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV5890'STATION IS APPROXIMATELY 40 FEET NORTHWEST OF A METAL 'NO DUMPING'
 JV5890'SIGN. BLAZED TREES AND WITNESS POST MENTIONED IN 1970 DESCRIPTION WERE
 JV5890'NOT FOUND. REFERENCE MARK 1 NOT SEARCHED FOR. REFERENCE MARK 2 FOUND
 JV5890'AS DESCRIBED. TELEPHONE POLE IS NUMBERED VZ 38 AND G+E 483765.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7240 ***********************************************************************
 HV7240  DESIGNATION -  BOWIE BELAIR WSSC TANK
 HV7240  PID         -  HV7240
 HV7240  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7240  COUNTRY     -  US
 HV7240  USGS QUAD   -  BOWIE (2016)
 HV7240
 HV7240                         *CURRENT SURVEY CONTROL
 HV7240  ______________________________________________________________________
 HV7240* NAD 83(1991) POSITION- 38 58 24.06164(N) 076 44 30.00112(W)   ADJUSTED
 HV7240  ______________________________________________________________________
 HV7240  GEOID HEIGHT    -        -32.679 (meters)                     GEOID18
 HV7240  LAPLACE CORR    -         -5.61  (seconds)                    DEFLEC18
 HV7240  HORZ ORDER      -  THIRD
 HV7240
 HV7240.The horizontal coordinates were established by classical geodetic methods
 HV7240.and adjusted by the National Geodetic Survey in January 1992.
 HV7240
 HV7240.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7240.GEOID18 height accuracy estimate available here.
 HV7240
 HV7240.Click photographs - Photos may exist for this station.
 HV7240
 HV7240.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7240
 HV7240. The following values were computed from the NAD 83(1991) position.
 HV7240
 HV7240;                    North         East     Units Scale Factor Converg.
 HV7240;SPC MD       -   145,079.520   422,385.733   MT  0.99995129   +0 09 43.7
 HV7240;SPC MD       -   475,981.73  1,385,777.19   sFT  0.99995129   +0 09 43.7
 HV7240;UTM  18      - 4,315,261.801   349,124.539   MT  0.99988030   -1 05 44.3
 HV7240
 HV7240_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4912415261(NAD 83)
 HV7240
 HV7240                          SUPERSEDED SURVEY CONTROL
 HV7240
 HV7240  NAD 83(1986)-  38 58 24.05912(N)    076 44 30.01223(W) AD(       ) 3
 HV7240  NAD 27      -  38 58 23.66151(N)    076 44 31.12681(W) AD(       ) 3
 HV7240
 HV7240.Superseded values are not recommended for survey control.
 HV7240
 HV7240.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7240.See file dsdata.pdf to determine how the superseded data were derived.
 HV7240
 HV7240_MARKER: 53 = ELEVATED TANK
 HV7240
 HV7240  HISTORY     - Date     Condition        Report By
 HV7240  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7240
 HV7240                          STATION DESCRIPTION
 HV7240
 HV7240'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7240'STATION IS THE BOWIE BELAIR WASHINGTON SUBURBAN SANITARY COMMISSION
 HV7240'TANK.  THE POINT OBSERVED WAS THE CENTER OF THE TOP OF THE
 HV7240'TANK.  THE TANK IS SILVER IN COLOR, SUPPORTED BY EIGHT LEGS AND
 HV7240'APPROXIMATELY 150 FEET HIGH.
 HV7240'
 HV7240'TO REACH THE TANK FROM THE INTERSECTION OF ROUTE 450 AND BELAIR
 HV7240'DRIVE IN BELAIR, GO SOUTH ON BELAIR DRIVE FOR 0.25 MILE TO A
 HV7240'DRIVEWAY ON THE LEFT WHICH LEADS TO THE TANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5888 ***********************************************************************
 JV5888  DESIGNATION -  BOWIE W BOWIE PEPCO MICROWAVE
 JV5888  PID         -  JV5888
 JV5888  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5888  COUNTRY     -  US
 JV5888  USGS QUAD   -  LAUREL (2016)
 JV5888
 JV5888                         *CURRENT SURVEY CONTROL
 JV5888  ______________________________________________________________________
 JV5888* NAD 83(1991) POSITION- 39 00 53.97065(N) 076 46 16.66876(W)   ADJUSTED
 JV5888  ______________________________________________________________________
 JV5888  GEOID HEIGHT    -        -32.547 (meters)                     GEOID18
 JV5888  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 JV5888  HORZ ORDER      -  THIRD
 JV5888
 JV5888.The horizontal coordinates were established by classical geodetic methods
 JV5888.and adjusted by the National Geodetic Survey in January 1992.
 JV5888
 JV5888.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5888.GEOID18 height accuracy estimate available here.
 JV5888
 JV5888.Click photographs - Photos may exist for this station.
 JV5888
 JV5888.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5888
 JV5888. The following values were computed from the NAD 83(1991) position.
 JV5888
 JV5888;                    North         East     Units Scale Factor Converg.
 JV5888;SPC MD       -   149,695.269   419,806.592   MT  0.99995279   +0 08 36.8
 JV5888;SPC MD       -   491,125.23  1,377,315.46   sFT  0.99995279   +0 08 36.8
 JV5888;UTM  18      - 4,319,932.761   346,647.547   MT  0.99988958   -1 06 55.0
 JV5888
 JV5888_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4664719932(NAD 83)
 JV5888
 JV5888                          SUPERSEDED SURVEY CONTROL
 JV5888
 JV5888  NAD 83(1986)-  39 00 53.96839(N)    076 46 16.67950(W) AD(       ) 3
 JV5888  NAD 27      -  39 00 53.57378(N)    076 46 17.78616(W) AD(       ) 3
 JV5888
 JV5888.Superseded values are not recommended for survey control.
 JV5888
 JV5888.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5888.See file dsdata.pdf to determine how the superseded data were derived.
 JV5888
 JV5888
 JV5888  HISTORY     - Date     Condition        Report By
 JV5888  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV5888  HISTORY     - 19960911 GOOD             USPSQD
 JV5888
 JV5888                          STATION DESCRIPTION
 JV5888
 JV5888'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5888'THE STATION IS THE RED LIGHT MOUNTED AT THE TOP OF THE BOWIE,
 JV5888'WEST BOWIE POTOMAC ELECTRIC POWER COMPANY MICROWAVE KPW 60,
 JV5888'LOCATED 0.4 MILE EAST OF JERICHO PARK ROAD AND LEMON BRIDGE ROAD
 JV5888'IN BOWIE.  IT IS 190 FEET ABOVE THE GROUND.
 JV5888
 JV5888                          STATION RECOVERY (1996)
 JV5888
 JV5888'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV5888'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5411 ***********************************************************************
 JV5411  DESIGNATION -  BOWLEY
 JV5411  PID         -  JV5411
 JV5411  STATE/COUNTY-  MD/BALTIMORE
 JV5411  COUNTRY     -  US
 JV5411  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5411
 JV5411                         *CURRENT SURVEY CONTROL
 JV5411  ______________________________________________________________________
 JV5411* NAD 83(1991) POSITION- 39 17 52.97757(N) 076 23 01.30323(W)   ADJUSTED
 JV5411* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5411  ______________________________________________________________________
 JV5411  GEOID HEIGHT    -        -33.075 (meters)                     GEOID18
 JV5411  LAPLACE CORR    -         -2.10  (seconds)                    DEFLEC18
 JV5411  HORZ ORDER      -  THIRD
 JV5411
 JV5411.The horizontal coordinates were established by classical geodetic methods
 JV5411.and adjusted by the National Geodetic Survey in January 1992.
 JV5411
 JV5411.The orthometric height was scaled from a topographic map.
 JV5411
 JV5411.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5411.GEOID18 height accuracy estimate available here.
 JV5411
 JV5411.Click photographs - Photos may exist for this station.
 JV5411
 JV5411.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5411
 JV5411. The following values were computed from the NAD 83(1991) position.
 JV5411
 JV5411;                    North         East     Units Scale Factor Converg.
 JV5411;SPC MD       -   181,273.352   453,161.919   MT  0.99997695   +0 23 12.5
 JV5411;SPC MD       -   594,727.66  1,486,748.73   sFT  0.99997695   +0 23 12.5
 JV5411;UTM  18      - 4,350,764.874   380,685.374   MT  0.99977528   -0 52 35.3
 JV5411
 JV5411!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5411!SPC MD       -   1.00000523  x   0.99997695  =   0.99998218
 JV5411!UTM  18      -   1.00000523  x   0.99977528  =   0.99978051
 JV5411
 JV5411:                Primary Azimuth Mark                     Grid Az
 JV5411:SPC MD       -  LOWER                                    081 08 07.4
 JV5411:UTM  18      -  LOWER                                    082 23 55.2
 JV5411
 JV5411_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8068550764(NAD 83)
 JV5411
 JV5411|---------------------------------------------------------------------|
 JV5411| PID    Reference Object                     Distance      Geod. Az  |
 JV5411|                                                           dddmmss.s |
 JV5411| CA9998 BOWLEY RM 2                          75.040 METERS 01728     |
 JV5411| CA9997 BOWLEY RM 1                          32.175 METERS 05820     |
 JV5411| JV5335 LOWER                               APPROX. 3.7 KM 0813119.9 |
 JV5411| JV5414 BOWLEY BAR LIGHT                    383.016 METERS 19442     |
 JV5411|---------------------------------------------------------------------|
 JV5411
 JV5411                          SUPERSEDED SURVEY CONTROL
 JV5411
 JV5411  NAD 83(1986)-  39 17 52.97237(N)    076 23 01.31116(W) AD(       ) 3
 JV5411  NAD 27      -  39 17 52.58500(N)    076 23 02.45600(W) AD(       ) 3
 JV5411
 JV5411.Superseded values are not recommended for survey control.
 JV5411
 JV5411.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5411.See file dsdata.pdf to determine how the superseded data were derived.
 JV5411
 JV5411_MARKER: DS = TRIANGULATION STATION DISK
 JV5411_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5411_STAMPING: BOWLEY 1934
 JV5411_MARK LOGO: CGS
 JV5411_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5411+STABILITY: SURFACE MOTION
 JV5411
 JV5411  HISTORY     - Date     Condition        Report By
 JV5411  HISTORY     - 1934     MONUMENTED       CGS
 JV5411  HISTORY     - 1951     MARK NOT FOUND   CGS
 JV5411  HISTORY     - 19950809 MARK NOT FOUND   USPSQD
 JV5411
 JV5411                          STATION DESCRIPTION
 JV5411
 JV5411'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5411'STATION BOWLEY IS LOCATED ON BOWLEY BAR ON N SHORE OF MIDDLE
 JV5411'RIVER, NEAR MOUTH OF MIDDLE RIVER, BETWEEN CALLOWAY CREEK AND
 JV5411'MIDDLE RIVER.  IT IS 45 FEET E OF A WOODEN BULKHEAD ON CALLOWAY
 JV5411'CREEK SHORE AND 50 FEET FROM HIGH-WATER MARK ON MIDDLE RIVER
 JV5411'SHORE.  THE STATION IS ABOUT 4 FEET E OF A LONE TREE AND IS ON THE
 JV5411'HIGHEST POINT OF THE MARSH.  STATION IS SET 3 INCHES ABOVE GROUND.
 JV5411'
 JV5411'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5411'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5411'
 JV5411'REFERENCE MARK NO.1 IS SET IN THE MARSH ABOUT 2 INCHES ABOVE
 JV5411'GROUND AND IS 52 FEET FROM HIGH-WATER LINE OF MIDDLE RIVER SHORE.
 JV5411'
 JV5411'REFERENCE MARK NO.2 IS ON HIGH GROUND IN A CLUMP OF TREES N OF THE
 JV5411'STATION, ABOUT 3 INCHES ABOVE GROUND.
 JV5411'
 JV5411'STATION IS STAMPED BOWLEY 1934 AND REFERENCE MARKS STAMPED NO.1
 JV5411'AND NO.2.
 JV5411'
 JV5411'STATION CAN BE REACHED BY BOAT OR TRUCK.  TO REACH STATION FROM
 JV5411'BALTIMORE, PROCEED E ON EASTERN AVENUE TO JUNCTION MARKED CARROLL
 JV5411'ISLAND ROAD, TURN RIGHT AND FOLLOW ROAD FOR ABOUT 0.2 MILE TO
 JV5411'JUNCTION, TURN RIGHT, ROAD IS MARKED WITH SIGN BOWLEYS QUARTERS.
 JV5411'PROCEED ALONG MAIN ROAD FOR ABOUT 3 MILES TO BOWLEY BAR.
 JV5411
 JV5411                          STATION RECOVERY (1951)
 JV5411
 JV5411'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951 (HAP)
 JV5411'STATION WAS FOUND LYING ON ITS SIDE IN THE WATER.  A ONE-HOUR
 JV5411'SEARCH WAS MADE FOR REFERENCE MARKS 1 AND 2.  CONSTRUCTION WORK
 JV5411'WAS DONE IN THE AREA, AND IT IS BELIEVED THAT BOTH MONUMENTS ARE
 JV5411'DESTROYED.  IT IS RECOMMENDED THAT THE STATION AND REFERENCE
 JV5411'MONUMENTS BE CONSIDERED LOST.
 JV5411
 JV5411                          STATION RECOVERY (1995)
 JV5411
 JV5411'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5411'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8071 ***********************************************************************
 AI8071  DESIGNATION -  BOWLEYS
 AI8071  PID         -  AI8071
 AI8071  STATE/COUNTY-  MD/C OF BALTIMORE
 AI8071  COUNTRY     -  US
 AI8071  USGS QUAD   -  BALTIMORE EAST (2016)
 AI8071
 AI8071                         *CURRENT SURVEY CONTROL
 AI8071  ______________________________________________________________________
 AI8071* NAD 83(2011) POSITION- 39 18 38.62575(N) 076 32 13.83729(W)   ADJUSTED
 AI8071* NAD 83(2011) ELLIP HT-    -9.307 (meters)        (06/27/12)   ADJUSTED
 AI8071* NAD 83(2011) EPOCH   -  2010.00
 AI8071* NAVD 88 ORTHO HEIGHT -    23.6   (meters)       77.    (feet) GPS OBS
 AI8071  ______________________________________________________________________
 AI8071  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8071  GEOID HEIGHT    -        -32.859 (meters)                     GEOID99
 AI8071  GEOID HEIGHT    -        -32.869 (meters)                     GEOID18
 AI8071  NAD 83(2011) X  -  1,150,461.130 (meters)                     COMP
 AI8071  NAD 83(2011) Y  - -4,805,750.487 (meters)                     COMP
 AI8071  NAD 83(2011) Z  -  4,019,061.092 (meters)                     COMP
 AI8071  LAPLACE CORR    -         -3.84  (seconds)                    DEFLEC18
 AI8071
 AI8071  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8071  Standards:
 AI8071         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8071            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8071  -------------------------------------------------------------------
 AI8071  NETWORK    0.81   1.14           0.37   0.28   0.58     -0.08714626
 AI8071  -------------------------------------------------------------------
 AI8071  Click here for local accuracies and other accuracy information.
 AI8071
 AI8071.The horizontal coordinates were established by GPS observations
 AI8071.and adjusted by the National Geodetic Survey in June 2012.
 AI8071
 AI8071.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8071.been affixed to the stable North American tectonic plate. See 
 AI8071.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8071
 AI8071.The horizontal coordinates are valid at the epoch date displayed above
 AI8071.which is a decimal equivalence of Year/Month/Day.
 AI8071
 AI8071.The orthometric height was determined by GPS observations and a
 AI8071.high-resolution geoid model.
 AI8071
 AI8071.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8071.GEOID18 height accuracy estimate available here.
 AI8071
 AI8071.Click photographs - Photos may exist for this station.
 AI8071
 AI8071.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8071
 AI8071.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8071
 AI8071.The ellipsoidal height was determined by GPS observations
 AI8071.and is referenced to NAD 83.
 AI8071
 AI8071. The following values were computed from the NAD 83(2011) position.
 AI8071
 AI8071;                    North         East     Units Scale Factor Converg.
 AI8071;SPC MD       -   182,602.807   439,915.714   MT  0.99997860   +0 17 25.7
 AI8071;SPC MD       -   599,089.38  1,443,290.14   sFT  0.99997860   +0 17 25.7
 AI8071;UTM  18      - 4,352,385.881   367,474.126   MT  0.99981625   -0 58 26.3
 AI8071
 AI8071!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8071!SPC MD       -   1.00000146  x   0.99997860  =   0.99998006
 AI8071!UTM  18      -   1.00000146  x   0.99981625  =   0.99981771
 AI8071
 AI8071_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6747452385(NAD 83)
 AI8071
 AI8071                          SUPERSEDED SURVEY CONTROL
 AI8071
 AI8071  NAD 83(2007)-  39 18 38.62600(N)    076 32 13.83808(W) AD(2002.00) 0
 AI8071  ELLIP H (02/10/07)   -9.290  (m)                       GP(2002.00)    
 AI8071  ELLIP H (08/30/02)   -9.282  (m)                       GP(       ) 4 2
 AI8071  NAD 83(1991)-  39 18 38.62602(N)    076 32 13.83771(W) AD(       ) 1
 AI8071  ELLIP H (10/26/00)   -9.353  (m)                       GP(       ) 4 1
 AI8071
 AI8071.Superseded values are not recommended for survey control.
 AI8071
 AI8071.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8071.See file dsdata.pdf to determine how the superseded data were derived.
 AI8071
 AI8071_MARKER: B = BOLT
 AI8071_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 AI8071_MARK LOGO: MD0050
 AI8071_MAGNETIC: I = MARKER IS A STEEL ROD
 AI8071_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI8071_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8071+SATELLITE: SATELLITE OBSERVATIONS - May 27, 2011
 AI8071
 AI8071  HISTORY     - Date     Condition        Report By
 AI8071  HISTORY     - 1999     MONUMENTED       MD0050
 AI8071  HISTORY     - 20020719 GOOD             WR
 AI8071  HISTORY     - 20110527 GOOD             GPSSS
 AI8071
 AI8071                          STATION DESCRIPTION
 AI8071
 AI8071'DESCRIBED BY CITY OF BALTIMORE MARYLAND 1999
 AI8071'THE STATION IS LOCATED 3.85 MILES (6.20 KM) N.E.  OF THE INNER HARBOR
 AI8071'OF BALTIMORE CITY.  THE POINT IS A 5/8 INCH IRON PIN SET THE ASPHALT
 AI8071'WALK IN THE MIKRO-KODESH CEMETRY, 50 FEET (15.2 M) EAST OF ASPHALT
 AI8071'DRIVEWAY WHICH IS 200 FEET (61.0 M) NORTH OF GATE ENTERANCE.  IT IS
 AI8071'20.90 FT.  (6.37 M) N.E.  OF A HEADSTONE MARKED KLEINMAN, 23.95 FT.
 AI8071'(7.30 M) N.E.  OF A BROWN HEADSTONE MARKED APPLESTEIN,6.95 FT.  N.W.
 AI8071'OF A HEADSTONE MARKED ROSEMAN.
 AI8071
 AI8071                          STATION RECOVERY (2002)
 AI8071
 AI8071'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (RTD)
 AI8071'RECOVERED IN GOOD CONDITION.
 AI8071
 AI8071                          STATION RECOVERY (2011)
 AI8071
 AI8071'RECOVERY NOTE BY GPS SALES AND SERVICES 2011 (MA)
 AI8071'RECOVED BY MIKE ALEXANDER OF FSH AND ASSOC.  THERE ARE TOO MANY
 AI8071'ROSEMAN HEADSTONES TO BE USEFUL.  MARK IS 1.5 FT S.W. OF THE CENTER OF
 AI8071'THE INTERSECTION OF TWO WALKS AND 8.5 FT WEST OF CUMMINS HEADSTONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7059 ***********************************************************************
 HV7059  DESIGNATION -  BOWMAN 1908
 HV7059  PID         -  HV7059
 HV7059  STATE/COUNTY-  MD/CHARLES
 HV7059  COUNTRY     -  US
 HV7059  USGS QUAD   -  ROCK POINT (2016)
 HV7059
 HV7059                         *CURRENT SURVEY CONTROL
 HV7059  ______________________________________________________________________
 HV7059* NAD 83(1993) POSITION- 38 20 00.63419(N) 076 52 09.00007(W)   ADJUSTED
 HV7059* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7059  ______________________________________________________________________
 HV7059  GEOID HEIGHT    -        -33.638 (meters)                     GEOID18
 HV7059  LAPLACE CORR    -         -2.12  (seconds)                    DEFLEC18
 HV7059  HORZ ORDER      -  THIRD
 HV7059
 HV7059.The horizontal coordinates were established by classical geodetic methods
 HV7059.and adjusted by the National Geodetic Survey in November 1994.
 HV7059
 HV7059.The orthometric height was scaled from a topographic map.
 HV7059
 HV7059.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7059.GEOID18 height accuracy estimate available here.
 HV7059
 HV7059.Click photographs - Photos may exist for this station.
 HV7059
 HV7059.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7059
 HV7059. The following values were computed from the NAD 83(1993) position.
 HV7059
 HV7059;                    North         East     Units Scale Factor Converg.
 HV7059;SPC MD       -    74,030.679   411,439.106   MT  0.99999434   +0 04 55.6
 HV7059;SPC MD       -   242,882.32  1,349,863.13   sFT  0.99999434   +0 04 55.6
 HV7059;SPC VA N     - 2,075,284.496 3,642,575.851   MT  0.99996060   +1 01 04.2
 HV7059;SPC VA N     - 6,808,662.55 11,950,684.27   sFT  0.99996060   +1 01 04.2
 HV7059;UTM  18      - 4,244,472.782   336,631.401   MT  0.99992870   -1 09 34.5
 HV7059
 HV7059!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7059!SPC MD       -   1.00000532  x   0.99999434  =   0.99999966
 HV7059!SPC VA N     -   1.00000532  x   0.99996060  =   0.99996592
 HV7059!UTM  18      -   1.00000532  x   0.99992870  =   0.99993402
 HV7059
 HV7059:                Primary Azimuth Mark                     Grid Az
 HV7059:SPC MD       -  BURR 1908                                024 02 04.5
 HV7059:SPC VA N     -  BURR 1908                                023 05 55.9
 HV7059:UTM  18      -  BURR 1908                                025 16 34.6
 HV7059
 HV7059_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3663144472(NAD 83)
 HV7059
 HV7059|---------------------------------------------------------------------|
 HV7059| PID    Reference Object                     Distance      Geod. Az  |
 HV7059|                                                           dddmmss.s |
 HV7059| HV7057 BURR 1908                           APPROX. 1.3 KM 0240700.1 |
 HV7059|---------------------------------------------------------------------|
 HV7059
 HV7059                          SUPERSEDED SURVEY CONTROL
 HV7059
 HV7059  NAD 83(1991)-  38 20 00.63395(N)    076 52 09.00467(W) AD(       ) 3
 HV7059  NAD 83(1986)-  38 20 00.63415(N)    076 52 09.01580(W) AD(       ) 3
 HV7059  NAD 27      -  38 20 00.12700(N)    076 52 10.07800(W) AD(       ) 3
 HV7059  USSD        -  38 20 00.86400(N)    076 52 10.20600(W) AD(       ) 3
 HV7059
 HV7059.Superseded values are not recommended for survey control.
 HV7059
 HV7059.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7059.See file dsdata.pdf to determine how the superseded data were derived.
 HV7059
 HV7059_MARKER: H = DRILL HOLE
 HV7059_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7059_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7059+STABILITY: SURFACE MOTION
 HV7059
 HV7059  HISTORY     - Date     Condition        Report By
 HV7059  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7059  HISTORY     - 1933     MARK NOT FOUND   CGS
 HV7059
 HV7059                          STATION DESCRIPTION
 HV7059
 HV7059'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7059'ON THE WESTERN SHORE OF WICOMICO RIVER, AT NE SIDE OF BOWMANS
 HV7059'CREEK, AND 1-1/2 MILES W BY S OF MILLS POINT.  STATION IS
 HV7059'SURROUNDED BY WATER BUSHES, AND IS ON POINT OF LAND 1-1/2 FEET
 HV7059'ABOVE HIGH WATER, 14 YARDS E OF HIGH-WATER MARK, 16 YARDS N OF
 HV7059'EXTREME END OF POINT, 20 YARDS NE OF SIDE OF POINT, 20 YARDS S OF
 HV7059'SEVERAL CEDAR TREES, AND ABOUT 150 YARDS S OF A HOUSE. STATION
 HV7059'MARK IS CENTER OF STANDARD MONUMENT OF MARYLAND SHELL FISH SURVEY,
 HV7059'WHICH IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE
 HV7059'AT THE TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND
 HV7059'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK
 HV7059'LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE LETTERS
 HV7059'U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE CENTER HOLE IS
 HV7059'ALWAYS AT THE CENTER OF THE MONUMENT AND IF THE MARKING HAS BEEN
 HV7059'BROKEN OFF WITHOUT DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE
 HV7059'SECTION MAY BE USED AS THE LOCATION OF THE STATION.  THE MONUMENT
 HV7059'IS SET VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5
 HV7059'INCHES ABOVE THE SURFACE.  DISTANCES AND BEARINGS FROM STATION TO
 HV7059'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY ON SQUARE
 HV7059'HOUSE, 1/4 MILE, S 13 DEG 35 MIN W.  CRANE HOUSE, 2 MILES, N 74
 HV7059'DEG 40 MIN W.  NAIL IN BLAZE IN 6-INCH CEDAR TREE, 18.37 METERS
 HV7059'(60.3 FEET), N 26 DEG 40 MIN W.  NAIL IN BLAZE IN 7-INCH CEDAR
 HV7059'TREE, 17.58 METERS (57.7 FEET), N 10 DEG 10 MIN W.  CHIMNEY ON
 HV7059'NEAR END OF HOUSE, 1/2 MILE, N 20 DEG 50 MIN E.  PEAK OF ROOF
 HV7059'BETWEEN TWO CHIMNEYS, 2-1/4 MILES, S 65 DEG 23 MIN E.  NAIL IN
 HV7059'BLAZE IN 7-INCH CEDAR TREE, 8.88 METERS (29.13 FEET), S 3 DEG 45
 HV7059'MIN E.
 HV7059
 HV7059                          STATION RECOVERY (1933)
 HV7059
 HV7059'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (HEC)
 HV7059'STATION LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4856 ***********************************************************************
 JV4856  DESIGNATION -  BOX
 JV4856  PID         -  JV4856
 JV4856  STATE/COUNTY-  MD/CECIL
 JV4856  COUNTRY     -  US
 JV4856  USGS QUAD   -  SPESUTIE (2016)
 JV4856
 JV4856                         *CURRENT SURVEY CONTROL
 JV4856  ______________________________________________________________________
 JV4856* NAD 83(1991) POSITION- 39 23 11.23982(N) 076 02 13.08864(W)   ADJUSTED
 JV4856  ______________________________________________________________________
 JV4856  GEOID HEIGHT    -        -33.366 (meters)                     GEOID18
 JV4856  LAPLACE CORR    -         -1.22  (seconds)                    DEFLEC18
 JV4856  HORZ ORDER      -  THIRD
 JV4856
 JV4856.The horizontal coordinates were established by classical geodetic methods
 JV4856.and adjusted by the National Geodetic Survey in January 1992.
 JV4856
 JV4856.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4856.GEOID18 height accuracy estimate available here.
 JV4856
 JV4856.Click photographs - Photos may exist for this station.
 JV4856
 JV4856.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4856
 JV4856. The following values were computed from the NAD 83(1991) position.
 JV4856
 JV4856;                    North         East     Units Scale Factor Converg.
 JV4856;SPC MD       -   191,346.385   482,965.787   MT  0.99998950   +0 36 16.0
 JV4856;SPC MD       -   627,775.60  1,584,530.25   sFT  0.99998950   +0 36 16.0
 JV4856;UTM  18      - 4,360,176.220   410,696.571   MT  0.99969819   -0 39 29.0
 JV4856
 JV4856_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1069660176(NAD 83)
 JV4856
 JV4856                          SUPERSEDED SURVEY CONTROL
 JV4856
 JV4856  NAD 83(1986)-  39 23 11.23236(N)    076 02 13.09552(W) AD(       ) 3
 JV4856  NAD 27      -  39 23 10.83000(N)    076 02 14.29000(W) AD(       ) 3
 JV4856  USSD        -  39 23 11.22000(N)    076 02 14.15000(W) AD(       ) 3
 JV4856
 JV4856.Superseded values are not recommended for survey control.
 JV4856
 JV4856.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4856.See file dsdata.pdf to determine how the superseded data were derived.
 JV4856
 JV4856_MARKER: 17 = FLAG TOWER
 JV4856
 JV4856  HISTORY     - Date     Condition        Report By
 JV4856  HISTORY     - 1898     FIRST OBSERVED   CGS
 JV4856
 JV4856                          STATION DESCRIPTION
 JV4856
 JV4856'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (HLM)
 JV4856'ON N SIDE OF SASSAFRAS RIVER, NEAR ITS MOUTH, ABOUT 40 FEET BACK
 JV4856'FROM HIGH WATER.  SIGNAL IS FLAG NAILED ON SW CORNER OF SMALL
 JV4856'ROOFLESS SHANTY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5935 ***********************************************************************
 JV5935  DESIGNATION -  BOXWOOD
 JV5935  PID         -  JV5935
 JV5935  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5935  COUNTRY     -  US
 JV5935  USGS QUAD   -  BELTSVILLE (2016)
 JV5935
 JV5935                         *CURRENT SURVEY CONTROL
 JV5935  ______________________________________________________________________
 JV5935* NAD 83(1991) POSITION- 39 00 39.71918(N) 076 53 04.15886(W)   ADJUSTED
 JV5935* NAVD 88 ORTHO HEIGHT -    74.4   (meters)      244.    (feet) VERTCON3
 JV5935  ______________________________________________________________________
 JV5935  GEOID HEIGHT    -        -32.236 (meters)                     GEOID18
 JV5935  LAPLACE CORR    -         -4.94  (seconds)                    DEFLEC18
 JV5935  HORZ ORDER      -  FIRST
 JV5935
 JV5935.The horizontal coordinates were established by classical geodetic methods
 JV5935.and adjusted by the National Geodetic Survey in January 1992.
 JV5935
 JV5935.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5935.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5935
 JV5935.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5935.GEOID18 height accuracy estimate available here.
 JV5935
 JV5935.Click photographs - Photos may exist for this station.
 JV5935
 JV5935.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5935
 JV5935. The following values were computed from the NAD 83(1991) position.
 JV5935
 JV5935;                    North         East     Units Scale Factor Converg.
 JV5935;SPC MD       -   149,237.326   410,004.309   MT  0.99995262   +0 04 21.0
 JV5935;SPC MD       -   489,622.79  1,345,155.80   sFT  0.99995262   +0 04 21.0
 JV5935;UTM  18      - 4,319,690.299   336,838.002   MT  0.99992781   -1 11 11.4
 JV5935
 JV5935!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5935!SPC MD       -   0.99999339  x   0.99995262  =   0.99994601
 JV5935!UTM  18      -   0.99999339  x   0.99992781  =   0.99992120
 JV5935
 JV5935:                Primary Azimuth Mark                     Grid Az
 JV5935:SPC MD       -  REED                                     192 19 22.3
 JV5935:UTM  18      -  REED                                     193 34 54.7
 JV5935
 JV5935_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3683819690(NAD 83)
 JV5935
 JV5935|---------------------------------------------------------------------|
 JV5935| PID    Reference Object                     Distance      Geod. Az  |
 JV5935|                                                           dddmmss.s |
 JV5935| JV5937 BELTSVILLE DA RSCH CTR N TANK       APPROX. 2.9 KM 0144034.8 |
 JV5935| JV5934 BELTSVILLE DA ADM BLDG CUPOLA       APPROX. 2.7 KM 0173926.9 |
 JV5935| JV5884 BELTSVILLE POWDER MILL WSSC TK      APPROX. 3.4 KM 0340043.2 |
 JV5935| JV5868 BELTSVILLE DA RSCH CTR S TANK       APPROX. 2.1 KM 0715359.8 |
 JV5935| HV7474 GREENBELT NASA TANK                 APPROX. 3.7 KM 1163702.2 |
 JV5935| CB1007 BOXWOOD RM 1                         25.268 METERS 11724     |
 JV5935| JV5924 GREENBELT WSSD                       15.775 METERS 16313     |
 JV5935| HV7758 REED                                APPROX. 4.6 KM 1922343.3 |
 JV5935| HV7745 COLLEGE PARK UNIV OF MD CHAPEL      APPROX. 5.7 KM 2382750.5 |
 JV5935| CB1008 BOXWOOD RM 2                         25.655 METERS 24209     |
 JV5935| JV5968 BELTSVILLE ST JOHNS EPIS CH         APPROX. 3.3 KM 3222701.0 |
 JV5935| JV5943 BELTSVILLE DA ANIMAL RSCH BLDG      APPROX. 2.5 KM 3585740.3 |
 JV5935|---------------------------------------------------------------------|
 JV5935
 JV5935                          SUPERSEDED SURVEY CONTROL
 JV5935
 JV5935  NAD 83(1986)-  39 00 39.71782(N)    076 53 04.16971(W) AD(       ) 1
 JV5935  NAD 27      -  39 00 39.32261(N)    076 53 05.26732(W) AD(       ) 1
 JV5935  NGVD 29 (07/19/86)   74.6    (m)          245.     (f) VERT ANG       
 JV5935
 JV5935.Superseded values are not recommended for survey control.
 JV5935
 JV5935.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5935.See file dsdata.pdf to determine how the superseded data were derived.
 JV5935
 JV5935_MARKER: DS = TRIANGULATION STATION DISK
 JV5935_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5935_STAMPING: BOXWOOD 1969
 JV5935_MARK LOGO: CGS
 JV5935_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5935+STABILITY: SURFACE MOTION
 JV5935
 JV5935  HISTORY     - Date     Condition        Report By
 JV5935  HISTORY     - 1970     MONUMENTED       NGS
 JV5935  HISTORY     - 1983     GOOD             USPSQD
 JV5935
 JV5935                          STATION DESCRIPTION
 JV5935
 JV5935'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5935'THE STATION IS ABOUT 5-1/2 MILES WEST OF WEST DOWIE, 2-1/2 MILES EAST
 JV5935'OF THE JUNCTION OF INTERSTATE HIGHWAY 495 AND U.S. HIGHWAY 1 AND 3/4
 JV5935'MILES NORTHEAST OF THE JUNCTION OF INTERSTATE HIGHWAY 495 AND STATE
 JV5935'HIGHWAY 201, ON A HILL AND NEAR A LARGE WATER TANK.
 JV5935'
 JV5935'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE 495 AND
 JV5935'STATE HIGHWAY 201, GO NORTH ON HIGHWAY 201 FOR 0.35 MILE TO THE
 JV5935'JUNCTION WITH CRESCENT ROAD.  TURN RIGHT AND GO EAST ON CRESCENT
 JV5935'ROAD FOR 0.3 MILE TO THE ENTRANCE TO BOXWOOD VILLAGE AND THE
 JV5935'JUNCTION WITH LASTNER LANE.  TURN LEFT AND GO NORTHERLY ON
 JV5935'LASTNER LANE FOR 0.5 MILE TO WHERE THE PAVED ROAD TURNS RIGHT
 JV5935'AND A GRADED ROAD LEFT.  TURN LEFT AND GO WEST ON GRADED ROAD FOR
 JV5935'ABOUT 200 FEET TO THE ENTRANCE TO THE WATER TANK AND THE STATION.
 JV5935'
 JV5935'STATION MARK IS A STANDARD DISK, STAMPED BOXWOOD 1969, SET IN THE
 JV5935'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS FLUSH
 JV5935'WITH THE GROUND SURFACE.  IT IS 72.3 FEET WEST OF THE NORTHEAST
 JV5935'CORNER OF THE FENCE AROUND THE TANK, 54.3 FEET NORTHEAST OF A
 JV5935'FIRE HYDRANT AND 11.4 FEET SOUTH OF THE FENCE AROUND THE TANK.
 JV5935'THE UNDERGROUND MARK IS 40 INCHES BELOW THE GROUND SURFACE.
 JV5935'
 JV5935'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED BOXWOOD NO 1 1969, SET
 JV5935'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 JV5935'FLUSH WITH THE GROUND SURFACE.  IT IS 56.5 FEET NORTH OF THE
 JV5935'SOUTHEAST CORNER OF THE FENCE, 53.5 FEET SOUTH OF THE NORTHEAST
 JV5935'CORNER OF THE FENCE 1.0 FEET WEST OF THE FENCE AND ABOUT THE SAME
 JV5935'ELEVATION AS THE STATION.
 JV5935'
 JV5935'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED BOXWOOD NO 2 1969, SET
 JV5935'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 JV5935'FLUSH WITH THE GROUND SURFACE.  IT IS 46.0 FEET NORTH OF THE
 JV5935'SOUTHWEST CORNER OF THE FENCE, 40.9 FEET WEST OF THE FIRE HYDRANT,
 JV5935'1.2 FEET EAST OF THE FENCE AND ABOUT THE SAME ELEVATION AS THE
 JV5935'STATION.
 JV5935'
 JV5935'REFERENCE MARK 1 TO REFERENCE MARK 2 OBSTRUCTED.
 JV5935'
 JV5935'NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
 JV5935
 JV5935                          STATION RECOVERY (1983)
 JV5935
 JV5935'RECOVERY NOTE BY US POWER SQUADRON 1983 (RKM)
 JV5935'BOXWOOD 1969 TRIANGULATION STA. RECOVERED GOOD.
 JV5935'
 JV5935'MARK RECOVERED AS DESCRIBED.  STATION NOW SURROUNDED BY CHAIN LINK
 JV5935'FENCE W/LOCKED GATE, FIRE HYDRANT GONE.  REFERENCE FROM FENCE
 JV5935'CORNER IS SUFFICIENT.  MARK BURIED (SHOULD BE CLEARED).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2026 ***********************************************************************
 HU2026  DESIGNATION -  BOYCE
 HU2026  PID         -  HU2026
 HU2026  STATE/COUNTY-  MD/DORCHESTER
 HU2026  COUNTRY     -  US
 HU2026  USGS QUAD   -  SHARPTOWN (2016)
 HU2026
 HU2026                         *CURRENT SURVEY CONTROL
 HU2026  ______________________________________________________________________
 HU2026* NAD 83(1991) POSITION- 38 33 40.94247(N) 075 42 12.10594(W)   ADJUSTED
 HU2026* NAVD 88 ORTHO HEIGHT -     1.8   (meters)        6.    (feet) VERTCON3
 HU2026  ______________________________________________________________________
 HU2026  GEOID HEIGHT    -        -35.566 (meters)                     GEOID18
 HU2026  LAPLACE CORR    -         -2.00  (seconds)                    DEFLEC18
 HU2026  HORZ ORDER      -  SECOND
 HU2026
 HU2026.The horizontal coordinates were established by classical geodetic methods
 HU2026.and adjusted by the National Geodetic Survey in January 1992.
 HU2026
 HU2026.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2026.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2026
 HU2026.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2026.GEOID18 height accuracy estimate available here.
 HU2026
 HU2026.Click photographs - Photos may exist for this station.
 HU2026
 HU2026.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2026
 HU2026. The following values were computed from the NAD 83(1991) position.
 HU2026
 HU2026;                    North         East     Units Scale Factor Converg.
 HU2026;SPC MD       -   100,118.464   513,005.435   MT  0.99996482   +0 48 49.7
 HU2026;SPC MD       -   328,471.99  1,683,085.33   sFT  0.99996482   +0 48 49.7
 HU2026;UTM  18      - 4,268,337.968   438,719.994   MT  0.99964624   -0 26 18.4
 HU2026
 HU2026!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2026!SPC MD       -   1.00000531  x   0.99996482  =   0.99997013
 HU2026!UTM  18      -   1.00000531  x   0.99964624  =   0.99965154
 HU2026
 HU2026:                Primary Azimuth Mark                     Grid Az
 HU2026:SPC MD       -  BOYCE AZ MK 2                            217 11 14.3
 HU2026:UTM  18      -  BOYCE AZ MK 2                            218 26 22.4
 HU2026
 HU2026_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3871968337(NAD 83)
 HU2026
 HU2026|---------------------------------------------------------------------|
 HU2026| PID    Reference Object                     Distance      Geod. Az  |
 HU2026|                                                           dddmmss.s |
 HU2026| HU2013 BOUNDARY MONUMENT 7 DE MD           152.340 METERS 08347     |
 HU2026| CS6550 NANTICOKE RIVER CHANNEL LT 46                      1175439.8 |
 HU2026| DC7850 BOYCE RM 1                            7.421 METERS 14056     |
 HU2026| HU2742 BOYCE AZ MK 2                       APPROX. 2.2 KM 2180004.0 |
 HU2026| HU2748 NANTICOKE RIVER CHANNEL LT 45       113.244 METERS 25351     |
 HU2026| HU2030 BOYCE AZ MK                         238.591 METERS 27736     |
 HU2026| DC7851 BOYCE RM 2                            9.619 METERS 29536     |
 HU2026|---------------------------------------------------------------------|
 HU2026
 HU2026                          SUPERSEDED SURVEY CONTROL
 HU2026
 HU2026  NAD 83(1986)-  38 33 40.93747(N)    075 42 12.12575(W) AD(       ) 2
 HU2026  NAD 27      -  38 33 40.52430(N)    075 42 13.37070(W) AD(       ) 2
 HU2026  NGVD 29 (07/19/86)    2.0    (m)            7.     (f) VERT ANG       
 HU2026
 HU2026.Superseded values are not recommended for survey control.
 HU2026
 HU2026.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2026.See file dsdata.pdf to determine how the superseded data were derived.
 HU2026
 HU2026_MARKER: DS = TRIANGULATION STATION DISK
 HU2026_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2026_STAMPING: BOYCE 1962
 HU2026_MARK LOGO: CGS
 HU2026_PROJECTION: PROJECTING 91 CENTIMETERS
 HU2026_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2026_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2026+STABILITY: SURFACE MOTION
 HU2026
 HU2026  HISTORY     - Date     Condition        Report By
 HU2026  HISTORY     - 1962     MONUMENTED       CGS
 HU2026  HISTORY     - 1975     GOOD             NGS
 HU2026  HISTORY     - 1976     GOOD             NGS
 HU2026  HISTORY     - 1987     GOOD             NGS
 HU2026  HISTORY     - 20181026 POOR             MDDNR
 HU2026
 HU2026                          STATION DESCRIPTION
 HU2026
 HU2026'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU2026'THE STATION IS LOCATED ABOUT 1.5 MILES NORTHEAST OF SHARPTOWN,
 HU2026'0.8 MILE SOUTHEAST OF THE SMALL SETTLEMENT OF GALESTOWN, ON THE
 HU2026'NORTH BANK OF THE NANTICOKE RIVER AND ON PROPERTY OWNED BY
 HU2026'MR. FRED BOYCE WHO LIVES AT REHOBOTH BEACH, DELAWARE.
 HU2026'
 HU2026'TO REACH THE STATION FROM SHARPTOWN, MARYLAND.  GO
 HU2026'NORTH-NORTHWEST ON STATE HIGHWAY 313 FOR 0.8 MILE TO A SIDE ROAD
 HU2026'ON THE RIGHT, EAST, SIDE OF THE HIGHWAY.  TURN RIGHT AND GO
 HU2026'NORTHEAST ON A BLACKTOP ROAD FOR 1.35 MILES TO A MACADAM, A
 HU2026'CROSSROAD IN THE VILLAGE OF GALESTOWN.  TURN RIGHT AND GO EAST
 HU2026'ON A MACADAM ROAD, ACROSS A DAM OF A SMALL LAKE FOR 0.15 MILE
 HU2026'TO A FORK.  TAKE THE RIGHT HAND FORK AND GO SOUTH AND SOUTHEAST
 HU2026'ON A SANDY ROAD FOR 0.55 MILE TO WHERE THE MAIN TRAVELED ROAD
 HU2026'TURNS SHARP TO THE LEFT AND A FARM DRIVEWAY.  CONTINUE
 HU2026'STRAIGHT AHEAD, SOUTH ON THE FARM DRIVE-WAY FOR 0.05 MILE TO A
 HU2026'FENCE CORNER ON THE LEFT AND A POLE GATE.* PASS THROUGH THE POLE
 HU2026'GATE AND GO SOUTH ALONG THE EAST SIDE OF A NORTH AND SOUTH
 HU2026'FENCELINE FOR 0.05 MILE TO A DIM TRACK ROAD.  TURN LEFT AND
 HU2026'GO EAST ACROSS A PASTURE ON A DIM TRACK ROAD FOR 0.1 MILE
 HU2026'TO A SMALL BRIDGE ACROSS A DRAINAGE DITCH.  PASS OVER THE
 HU2026'BRIDGE, THENCE TURN SHARP RIGHT AND GO SOUTH ON A DIM TRACK ROAD
 HU2026'ALONG THE EAST SIDE OF THE DRAINAGE DITCH FOR 0.1 MILE TO THE
 HU2026'NORTHWEST CORNER OF A TIMBER AND A WOODS ROAD STRAIGHT AHEAD.
 HU2026'CONTINUE STRAIGHT AHEAD, SOUTH ON THE WOODS ROAD FOR 0.05 MILE
 HU2026'TO THE RIVERS EDGE AND AN OLD WHARF AND THE STATION AS
 HU2026'DESCRIBED.
 HU2026'
 HU2026'*CONTINUE STRAIGHT AHEAD, SOUTH, ON THE DRIVE WAY FOR 0.1 MILE
 HU2026'TO A FENCE CORNER ABOUT 100.0 FEET SOUTH-SOUTHWEST OF THE
 HU2026'SOUTHWEST CORNER OF A LARGE FARM HOUSE AND THE AZIMUTH MARK
 HU2026'ABOUT 90.0 FEET WEST OF THE FENCE CORNER.
 HU2026'
 HU2026'THE STATION MARK, A STANDARD DISK STAMPED BOYCE 1962, IS SET IN
 HU2026'TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 4
 HU2026'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 6.0 FEET NORTH OF
 HU2026'THE EDGE OF THE RIVER AND 4.1 FEET EAST OF A STANDARD METAL
 HU2026'WITNESS POST AND MARKER.
 HU2026'
 HU2026'REFERENCE MARK 1, A STANDARD DISK STAMPED BOYCE NO 1 1962, IS
 HU2026'SET IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT FLUSH WITH THE
 HU2026'SURFACE OF THE GROUND.  IT IS 28.7 FEET EAST OF A STANDARD
 HU2026'METAL WITNESS POST AND MARKER, 10.0 FEET NORTH OF THE EDGE OF
 HU2026'THE RIVER AND ABOUT THE SAME ELEVATION AS THE STATION.
 HU2026'
 HU2026'REFERENCE MARK 2, A STANDARD DISK STAMPED BOYCE NO 2 1962, IS
 HU2026'SET IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT
 HU2026'4 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 27.0 FEET WEST OF
 HU2026'A STANDARD METAL WITNESS POST AND MARKER, 7.0 FEET NORTH OF THE
 HU2026'EDGE OF THE RIVER, 2.0 FEET NORTH OF A FENCE LINE AND ABOUT THE
 HU2026'SAME ELEVATION AS THE STATION.
 HU2026'
 HU2026'THE AZIMUTH MARK, A STANDRD DISK STAMPED BOYCE 1962, IS SET
 HU2026'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT
 HU2026'1 INCH ABOVE THE SURFACE OF THE GROUND.  IT IS 20.0 FEET
 HU2026'NORTH-NORTHEAST OF A 30-INCH SYCAMORE TREE, 4.5 FEET SOUTH OF A
 HU2026'STANDARD METAL WITNESS POST AND MARKER AND 4.5 FEET SOUTH OF AN
 HU2026'EAST AND WEST FENCE LINE.
 HU2026'
 HU2026'BOUNDARY MONUMENT NO. 7 WAS NOT RECOVERED AND NO TRAVERSE WAS MADE.
 HU2026'
 HU2026'HEIGHT OF LIGHT ABOVE STATION MARK 2 METERS.
 HU2026
 HU2026                          STATION RECOVERY (1975)
 HU2026
 HU2026'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HU2026'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU2026'CONDITION AS DESCRIBED IN THE 1962 DESCRIPTION.  THE DISTANCE
 HU2026'AND ALL DIRECTIONS TO ALL MARKS WERE WITHIN CLOSE AGREEMENT
 HU2026'WITH THE 1962 OBSERVATIONS.
 HU2026'
 HU2026'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU2026'1-1/2 MILES NORTHEAST OF SHARPTOWN.
 HU2026
 HU2026                          STATION RECOVERY (1976)
 HU2026
 HU2026'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU2026'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU2026'CONDITION AS PREVIOUSLY DESCRIBED.  THE DISTANCE AND DIRECTIONS
 HU2026'TO ALL MARKS WERE WITHIN CLOSE AGREEMENT WITH THE PREVIOUS
 HU2026'OBSERVATIONS.
 HU2026'
 HU2026'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 7 WAS SET AT THIS
 HU2026'DATE.
 HU2026'
 HU2026'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU2026'1-1/2 MILES NORTHEAST OF SHARPTOWN.
 HU2026
 HU2026                          STATION RECOVERY (1987)
 HU2026
 HU2026'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU2026'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES NOTED BELOW -- THE
 HU2026'STATION MARK AND BOTH REFERENCE MARKS WERE RECOVERED AND FOUND IN GOOD
 HU2026'CONDITION. THE AZIMUTH MARK WAS FOUND DESTROYED.  A NEW AZIMUTH MARK
 HU2026'TWO WAS ESTABLISHED.  A LONGER DISTANCE OF 0.011 METER OR 0.04 FT WAS
 HU2026'NOTED TO REFERENCE MARK 0NE.  A SHORTER DISTANCE OF 0.010 METER OR
 HU2026'0.03 FT WAS NOTED TO REFERENCE MARK TWO. A DIFFERENCE OF 4 MINUTES AND
 HU2026'44 SECONDS IN DIRECTION WAS NOTED TO REFERENCE MARK ONE.  ALL ATHER
 HU2026'DISTANCES AND DIRECTIONS WERE WITHIN CLOSE AGREEMENT WITH THE MOST
 HU2026'RECENT INFORMATION AVAILABLE.
 HU2026'
 HU2026'THE STATION IS LOCATED ABOUT 2.4 KM (1.5 MI) NORTHEAST OF SHARPTOWN,
 HU2026'1.3 KM (0.8 MI) SOUTHEAST OF THE SMALL SETTLEMENT OF GALESTOWN AND ON
 HU2026'THE NORTH BANK OF THE NANTICOKE RIVER.  OWNERSHIP--MR. AND MRS. FRED
 HU2026'BOYCE, REHOBOTH BEACH, DELAWARE.
 HU2026'
 HU2026'TO REACH THE STATION FROM THE NORTHWEST END OF THE NANTICOKE RIVER
 HU2026'BRIDGE AT SHARPTOWN, GO NORTHWEST FOR 0.7 KM (0.45 MI) ON STATE
 HU2026'HIGHWAY 313 TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO NORTHEAST FOR
 HU2026'2.15 KM (1.35 MI) ON GALESTOWN ROAD TO A CROSSROADS.  TURN RIGHT AND
 HU2026'GO SOUTHEAST FOR 0.25 KM (0.15 MI) ON RELIANCE ROAD TO A FORK.  TURN
 HU2026'RIGHT AND GO SOUTH FOR 0.9 KM (0.55 MI) ON STATE LINE ROAD TO A
 HU2026'PRIVATE ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTH FOR 0.35 KM
 HU2026'(0.2 MI) ON THE PRIVATE DIRT ROAD TO THE NORTH SHORE OF THE NANTICOKE
 HU2026'RIVER AND END OF TRUCK TRAVEL.  TURN LEFT AND GO EAST FOR 0.25 KM
 HU2026'(0.15 MI) ON A FOOT PATH ALONG THE NORTH SHORE OF THE NANTICOKE RIVER
 HU2026'TO THE STATION ON THE RIGHT.
 HU2026'
 HU2026'THE STATION IS A STANDARD NGS DISK STAMPED ---BOYCE 1962---, SET INTO
 HU2026'THE TOP OF A SQUARE CONCRETE MONUMENT 30 CM ON SIDE PROJECTING 127 CM
 HU2026'ABOVE GROUND.  LOCATED 2.0 METERS (6.6 FT) NORTH FROM THE SHORE LINE,
 HU2026'3.8 METERS (12.5 FT) SOUTH FROM A 24-INCH TRIANGULAR BLAZED TREE, 8.7
 HU2026'METERS (28.5 FT) NORTHWEST FROM A 14-INCH SYCAMORE TREE AND 1.3 METERS
 HU2026'(4.3 FT) SOUTHEAST FROM A STEEL WITNESS POST.
 HU2026'
 HU2026'REFERENCE MARK NO. 1 IS A STANDARD NGS DISK STAMPED
 HU2026'---BOYCE NO 1 1962---, SET INTO THE TOP OF A SQUARE CONCRETE MONUMENT
 HU2026'30 CM ON SIDE FLUSH WITH GROUND.  LOCATED 10.0 METERS (32.8 FT)
 HU2026'SOUTHEAST FROM THE TRIANGULAR BLAZED TREE, 1.8 METERS (5.9 FT)
 HU2026'WEST-SOUTHWEST FROM THE SYCAMORE TREE, 1.3 METERS (4.3 FT) NORTHWEST
 HU2026'FROM THE SHORELINE AND 8.7 METERS (28.5 FT) SOUTHEAST FROM THE WITNESS
 HU2026'POST.  MARK IS 30 CM LOWER THAN THE STATION.
 HU2026'
 HU2026'REFERENCE MARK NO. 2 IS A STANDARD NGS DISK STAMPED
 HU2026'---BOYCE NO 2 1962---, SET INTO THE TOP OF A SQUARE CONCRETE MONUMENT
 HU2026'30 CM ON SIDE PROJECTING 5 CM ABOVE GROUND.  LOCATED 18.2 METERS
 HU2026'(59.7 FT) NORTHWEST FROM THE CYCAMORE TREE, 8.4 METERS (27.6 FT) WEST
 HU2026'FROM THE TRIANGULAR BLAZED TREE, 1.5 METERS (4.9 FT) NORTH-NORTHEAST
 HU2026'FROM THE SHORE LINE AND 8.5 METERS (27.9 FT) WEST-NORTHWEST FROM THE
 HU2026'WITNESS POST MARK IS LEVEL WITH THE STATION.
 HU2026'
 HU2026'AZIMUTH MARK NO. 2 IS A STANDARD NGS DISK STAMPED
 HU2026'---BOYCE 1962 NO 2 1987---, SET INTO A DRILL HOLE IN THE CONCRETE DECK
 HU2026'OF A NEW HIGHWAY BRIDGE OVER THE NANTICOKE RIVER WHICH IS JUST
 HU2026'NORTHEAST OF SHARPTOWN.  1.7 METERS (5.6 FT) SOUTH-SOUTHWEST FROM A
 HU2026'LIGHTPOLE NUMBERED 20, 0.6 METERS (2.0 FT) SOUTHWEST FROM THE
 HU2026'SOUTHWEST FACE OF THE EAST CONCRETE PARAPET WALL, 8.0 METERS (26.2 FT)
 HU2026'NORTHEAST FROM THE NORTHEAST FACE OF THE SOUTHWEST PARAPET WALL AND
 HU2026'13.1 METERS (13.1 FT) SOUTH-SOUTHEAST FROM A DRAINAGE INLET.  TO REACH
 HU2026'THE AZIMUTH MARK FROM THE STATION, PROCEED BACK TO THE TOP OF THE
 HU2026'BRIDGE OVER THE NANTICOKE RIVER AND THE MARK ABOUT 25 METERS SOUTHEAST
 HU2026'FROM THE HIGHEST POINT OF THE BRIDGE.
 HU2026
 HU2026                          STATION RECOVERY (2018)
 HU2026
 HU2026'RECOVERY NOTE BY MD DEPT OF NAT RES 2018 (LCW)
 HU2026'RECOVERED ALMOST WASHED OUT OF BANK, STAMPED BOYCE 1962 PROJECTING 0.9
 HU2026'M (3.0 FT) ABOVE THE RIVER BOTTOM.  MONUMENT IS STILL FIRM IN THE
 HU2026'GROUND BUT WILL SOON BE DESTROYED.  THERE IS AN OLD STEEL WITNESS POST
 HU2026'WEST OF THE MARK AND A CARSONITE WITNESS POST NORTHWEST ON THE FAST
 HU2026'LAND.  THE TOP OF THE MONUMENT IS AT THE APPROXIMATE HIGH WATER LINE
 HU2026'REFERENCE MARK 1 SHOULD BE CONSIDERED DESTROYED.  THE CALCULATED
 HU2026'POSITION FROM BOYCE PLACES IT FARTHER OUT IN THE RIVER THAN STATION
 HU2026'BOYCE.
 HU2026'
 HU2026'REFERENCE MARK 2 STAMPED BOYCE NO 2 1962 RECOVERED PARTIALLY EXPOSED
 HU2026'ON SHORE APPROXIMATELY 10 CM (4 INCHES) BELOW GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2742 ***********************************************************************
 HU2742  DESIGNATION -  BOYCE AZ MK 2
 HU2742  PID         -  HU2742
 HU2742  STATE/COUNTY-  MD/WICOMICO
 HU2742  COUNTRY     -  US
 HU2742  USGS QUAD   -  SHARPTOWN (2016)
 HU2742
 HU2742                         *CURRENT SURVEY CONTROL
 HU2742  ______________________________________________________________________
 HU2742* NAD 83(1991) POSITION- 38 32 43.52335(N) 075 43 09.22721(W)   ADJUSTED
 HU2742* NAVD 88 ORTHO HEIGHT -    18.5   (meters)       61.    (feet) VERTCON3
 HU2742  ______________________________________________________________________
 HU2742  GEOID HEIGHT    -        -35.560 (meters)                     GEOID18
 HU2742  LAPLACE CORR    -         -2.05  (seconds)                    DEFLEC18
 HU2742  HORZ ORDER      -  SECOND
 HU2742
 HU2742.The horizontal coordinates were established by classical geodetic methods
 HU2742.and adjusted by the National Geodetic Survey in January 1992.
 HU2742
 HU2742.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2742.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2742
 HU2742.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2742.GEOID18 height accuracy estimate available here.
 HU2742
 HU2742.Click photographs - Photos may exist for this station.
 HU2742
 HU2742.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2742
 HU2742. The following values were computed from the NAD 83(1991) position.
 HU2742
 HU2742;                    North         East     Units Scale Factor Converg.
 HU2742;SPC MD       -    98,328.643   511,647.512   MT  0.99996638   +0 48 13.9
 HU2742;SPC MD       -   322,599.89  1,678,630.21   sFT  0.99996638   +0 48 13.9
 HU2742;UTM  18      - 4,266,578.810   437,323.727   MT  0.99964838   -0 26 53.5
 HU2742
 HU2742!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2742!SPC MD       -   1.00000268  x   0.99996638  =   0.99996906
 HU2742!UTM  18      -   1.00000268  x   0.99964838  =   0.99965106
 HU2742
 HU2742_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3732366578(NAD 83)
 HU2742
 HU2742                          SUPERSEDED SURVEY CONTROL
 HU2742
 HU2742  NAD 83(1986)-  38 32 43.51874(N)    075 43 09.24766(W) AD(       ) 2
 HU2742  NGVD 29 (11/20/91)   18.8    (m)           62.     (f) VERT ANG       
 HU2742
 HU2742.Superseded values are not recommended for survey control.
 HU2742
 HU2742.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2742.See file dsdata.pdf to determine how the superseded data were derived.
 HU2742
 HU2742_MARKER: DZ = AZIMUTH MARK DISK
 HU2742_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU2742_SP_SET: BRIDGE DECK
 HU2742_STAMPING: BOYCE 1962 NO 2 1987
 HU2742_MARK LOGO: NGS
 HU2742_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HU2742_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2742
 HU2742  HISTORY     - Date     Condition        Report By
 HU2742  HISTORY     - 1987     MONUMENTED       NGS
 HU2742  HISTORY     - 20221104 GOOD             USPSQD
 HU2742
 HU2742                          STATION DESCRIPTION
 HU2742
 HU2742'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU2742'THE STATION IS LOCATED ABOUT 0.8 KM (0.5 MI)
 HU2742'NORTHEAST OF THE APPROXIMATE CENTER OF SHARPTOWN AND ABOUT 25
 HU2742'METERS SOUTHEAST FROM THE HIGHEST POINT OF THE STATE HIGHWAY 313
 HU2742'BRIDGE OVER THE NANTICOKE RIVER. IT IS ON THE NORTHEAST EDGE OF THE
 HU2742'BRIDGE AND NEAR THE NORTHEAST PARAPET WALL.
 HU2742'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2742'
 HU2742'NO TO REACH IS NECESSARY. THE LOCATION IS ADEQUATE TO LOCATE IT BY.
 HU2742'
 HU2742'THE STATION IS A STANDARD NGS DISK
 HU2742'STAMPED---BOYCE 1962 NO 2 1987---,
 HU2742'SET INTO A DRILL HOLE IN THE BRIDGE DECK.
 HU2742'1.7 METERS (5.6 FT) SOUTH-SOUTHWEST FROM A LIGHTPOLE NUMBERED 20,
 HU2742'0.6 METERS (2.0 FT) SOUTHWEST FROM THE MOST NORTHEAST PARAPET WALL,
 HU2742'8.0 METERS (26.2 FT) NORTHEAST FROM THE MOST SOUTHWEST PARAPET WALL,
 HU2742'4.0 METERS (13.1 FT) SOUTH-SOUTHEAST FROM A DRAINAGE INLET.
 HU2742
 HU2742                          STATION RECOVERY (2022)
 HU2742
 HU2742'RECOVERY NOTE BY US POWER SQUADRON 2022 (DLT)
 HU2742'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7171 ***********************************************************************
 HV7171  DESIGNATION -  BOYD
 HV7171  PID         -  HV7171
 HV7171  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7171  COUNTRY     -  US
 HV7171  USGS QUAD   -  SOUTH RIVER (2016)
 HV7171
 HV7171                         *CURRENT SURVEY CONTROL
 HV7171  ______________________________________________________________________
 HV7171* NAD 83(1991) POSITION- 38 57 15.74578(N) 076 34 02.41587(W)   ADJUSTED
 HV7171* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7171  ______________________________________________________________________
 HV7171  GEOID HEIGHT    -        -33.210 (meters)                     GEOID18
 HV7171  LAPLACE CORR    -         -4.81  (seconds)                    DEFLEC18
 HV7171  HORZ ORDER      -  THIRD
 HV7171
 HV7171.The horizontal coordinates were established by classical geodetic methods
 HV7171.and adjusted by the National Geodetic Survey in January 1992.
 HV7171
 HV7171.The orthometric height was scaled from a topographic map.
 HV7171
 HV7171.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7171.GEOID18 height accuracy estimate available here.
 HV7171
 HV7171.Click photographs - Photos may exist for this station.
 HV7171
 HV7171.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7171
 HV7171. The following values were computed from the NAD 83(1991) position.
 HV7171
 HV7171;                    North         East     Units Scale Factor Converg.
 HV7171;SPC MD       -   143,030.133   437,502.049   MT  0.99995078   +0 16 17.6
 HV7171;SPC MD       -   469,258.03  1,435,371.31   sFT  0.99995078   +0 16 17.6
 HV7171;UTM  18      - 4,312,881.421   364,190.768   MT  0.99982712   -0 59 07.9
 HV7171
 HV7171!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7171!SPC MD       -   1.00000525  x   0.99995078  =   0.99995603
 HV7171!UTM  18      -   1.00000525  x   0.99982712  =   0.99983237
 HV7171
 HV7171:                Primary Azimuth Mark                     Grid Az
 HV7171:SPC MD       -  SIMMON                                   074 26 18.9
 HV7171:UTM  18      -  SIMMON                                   075 41 44.4
 HV7171
 HV7171_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6419012881(NAD 83)
 HV7171
 HV7171|---------------------------------------------------------------------|
 HV7171| PID    Reference Object                     Distance      Geod. Az  |
 HV7171|                                                           dddmmss.s |
 HV7171| CX2113 BOYD RM                              14.381 METERS 00400     |
 HV7171| HV7143 SIMMON                              APPROX. 0.7 KM 0744236.5 |
 HV7171| HV7109 BEARD                               APPROX. 0.5 KM 1791524.5 |
 HV7171| HV7141 VIEW                                437.558 METERS 2600022.1 |
 HV7171|---------------------------------------------------------------------|
 HV7171
 HV7171                          SUPERSEDED SURVEY CONTROL
 HV7171
 HV7171  NAD 83(1986)-  38 57 15.74244(N)    076 34 02.42690(W) AD(       ) 3
 HV7171  NAD 27      -  38 57 15.34300(N)    076 34 03.56500(W) AD(       ) 3
 HV7171
 HV7171.Superseded values are not recommended for survey control.
 HV7171
 HV7171.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7171.See file dsdata.pdf to determine how the superseded data were derived.
 HV7171
 HV7171_MARKER: DS = TRIANGULATION STATION DISK
 HV7171_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7171
 HV7171  HISTORY     - Date     Condition        Report By
 HV7171  HISTORY     - 1933     MONUMENTED       CGS
 HV7171  HISTORY     - 1960     GOOD             CGS
 HV7171  HISTORY     - 1977     SEE DESCRIPTION  NGS
 HV7171
 HV7171                          STATION DESCRIPTION
 HV7171
 HV7171'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7171'ON THE NE SIDE OF SOUTH RIVER BETWEEN THE TWO HIGHWAY BRIDGES, AND
 HV7171'ABOUT 3/4 MILE W OF THE NEW CONCRETE ONE.  ON BOYDS POINT 50 FEET
 HV7171'W OF EXTREME END OF THE POINT AND EQUIDISTANT FROM THE TWO SIDES.
 HV7171'THE STATION IS IN MARSHLAND.
 HV7171'
 HV7171'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7171'CONCRETE AS DESCRIBED.
 HV7171
 HV7171                          STATION RECOVERY (1960)
 HV7171
 HV7171'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7171'STATION AND R.M. RECOVERED IN GOOD CONDITION IN ACCORDANCE WITH
 HV7171'ORIGINAL DESCRIPTION.  R.M. IS 6.4 FEET E OF 6 INCH PERSIMMON
 HV7171'TREE.  STATION AND R.M. BOTH STAMPED BOYD 1933.
 HV7171
 HV7171                          STATION RECOVERY (1977)
 HV7171
 HV7171'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HV7171'THE STATION MARK WAS FOUND DESTROYED.  THE ENTIRE POINT OF LAND
 HV7171'HAD BEEN WASHED AWAY AND THE STATION WASHED AWAY WITH IT.  THERE
 HV7171'IS ABOUT 3 FEET OF WATER AT LOW TIDE WHERE THE STATION WAS
 HV7171'LOCATED. THE REFERENCE MARK WAS RECOVERED AND FOUND IN GOOD
 HV7171'CONDITION. IT IS ABOUT 25 FEET NORTH OF THE MOST SOUTH POINT OF LAND.
 HV7171'
 HV7171'THERE IS NO WAY POSSIBLE TO RE-ESTABLISH THE STATION AT THIS
 HV7171'DATE. IT MAY BE POSSIBLE, IN THE FUTURE WHEN THERE IS A EXTREME
 HV7171'LOW TIDE, TO REESTABLISH THE STATION, THEN MOVE IT TO A HIGHER
 HV7171'LOCATION AND OUT OF THE WATER.  HOWEVER, NOW AT LOW TIDE, THERE IS
 HV7171'ABOUT 3 FEET OF WATER OVER ANY REMAINS OF THE STATION.
 HV7171'
 HV7171'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--ON BOYDS POINT
 HV7171'AND ON THE NORTH SIDE OF THE SOUTH RIVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5276 ***********************************************************************
 JV5276  DESIGNATION -  BOYD RESET
 JV5276  PID         -  JV5276
 JV5276  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5276  COUNTRY     -  US
 JV5276  USGS QUAD   -  SPARROWS POINT (2016)
 JV5276
 JV5276                         *CURRENT SURVEY CONTROL
 JV5276  ______________________________________________________________________
 JV5276* NAD 83(1991) POSITION- 39 08 27.96759(N) 076 26 50.08113(W)   ADJUSTED
 JV5276* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5276  ______________________________________________________________________
 JV5276  GEOID HEIGHT    -        -33.149 (meters)                     GEOID18
 JV5276  LAPLACE CORR    -         -1.48  (seconds)                    DEFLEC18
 JV5276  HORZ ORDER      -  SECOND
 JV5276
 JV5276.The horizontal coordinates were established by classical geodetic methods
 JV5276.and adjusted by the National Geodetic Survey in January 1992.
 JV5276
 JV5276.The orthometric height was scaled from a topographic map.
 JV5276
 JV5276.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5276.GEOID18 height accuracy estimate available here.
 JV5276
 JV5276.Click photographs - Photos may exist for this station.
 JV5276
 JV5276.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5276
 JV5276. The following values were computed from the NAD 83(1991) position.
 JV5276
 JV5276;                    North         East     Units Scale Factor Converg.
 JV5276;SPC MD       -   163,814.898   447,785.771   MT  0.99996054   +0 20 48.9
 JV5276;SPC MD       -   537,449.38  1,469,110.48   sFT  0.99996054   +0 20 48.9
 JV5276;UTM  18      - 4,333,432.251   374,927.093   MT  0.99979262   -0 54 49.2
 JV5276
 JV5276!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5276!SPC MD       -   1.00000430  x   0.99996054  =   0.99996484
 JV5276!UTM  18      -   1.00000430  x   0.99979262  =   0.99979692
 JV5276
 JV5276:                Primary Azimuth Mark                     Grid Az
 JV5276:SPC MD       -  CRAIGHILL CHAN FRONT RNG LT              040 31 27.1
 JV5276:UTM  18      -  CRAIGHILL CHAN FRONT RNG LT              041 47 05.2
 JV5276
 JV5276_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7492733432(NAD 83)
 JV5276
 JV5276|---------------------------------------------------------------------|
 JV5276| PID    Reference Object                     Distance      Geod. Az  |
 JV5276|                                                           dddmmss.s |
 JV5276| JV5273 FORT HOWARD TANK                    APPROX. 6.8 KM 0000324.1 |
 JV5276| JV5277 BAY SHORE SOUTHERLY TWIN TANK       APPROX. 7.6 KM 0131531.8 |
 JV5276| JV5253 CRAIGHILL CHAN FRONT RNG LT         APPROX. 7.0 KM 0405216.0 |
 JV5276| CB1011 BOYD RM 3                             9.025 METERS 08255     |
 JV5276| CB1009 BOYD RM 1                            16.660 METERS 17539     |
 JV5276| CB1010 BOYD RM 2                            22.860 METERS 27117     |
 JV5276| CB1012 BOYD RM 4                            14.214 METERS 30815     |
 JV5276|---------------------------------------------------------------------|
 JV5276
 JV5276                          SUPERSEDED SURVEY CONTROL
 JV5276
 JV5276  NAD 83(1986)-  39 08 27.96304(N)    076 26 50.09114(W) AD(       ) 2
 JV5276  NAD 27      -  39 08 27.57220(N)    076 26 51.23694(W) AD(       ) 2
 JV5276
 JV5276.Superseded values are not recommended for survey control.
 JV5276
 JV5276.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5276.See file dsdata.pdf to determine how the superseded data were derived.
 JV5276
 JV5276_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION
 JV5276_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5276_STAMPING: BOYD 1934 1938
 JV5276_MARK LOGO: CGS
 JV5276_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5276_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5276+STABILITY: SURFACE MOTION
 JV5276
 JV5276  HISTORY     - Date     Condition        Report By
 JV5276  HISTORY     - 1934     MONUMENTED       CGS
 JV5276  HISTORY     - 1938     GOOD             CGS
 JV5276  HISTORY     - 1961     GOOD             CGS
 JV5276  HISTORY     - 1973     GOOD             NGS
 JV5276  HISTORY     - 1975     GOOD             NGS
 JV5276  HISTORY     - 1980     GOOD             USACE
 JV5276  HISTORY     - 1984     GOOD             NOS
 JV5276
 JV5276                          STATION DESCRIPTION
 JV5276
 JV5276'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5276'STATION IS ON S SHORE PATAPSCO RIVER ON HIGH BLUFF HALF-WAY
 JV5276'BETWEEN THE ENTRANCE TO BODKIN CREEK AND THE ENTRANCE TO BOYD
 JV5276'POND ON PROPERTY BELONGING TO C.C. RITTENHOUSE IN SETTLEMENT
 JV5276'KNOWN AS BAY SIDE BEACH.
 JV5276'
 JV5276'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5276'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A AND PROTRUDE 2 INCHES
 JV5276'ABOVE GROUND.
 JV5276'
 JV5276'STATION IS IN LINE WITH FRONT OF SMALL WHITE COTTAGE BELONGING TO
 JV5276'JAMES SWAINE, 34 FEET BACK FROM BLUFF AND 95 FEET SE OF COTTAGE.
 JV5276'
 JV5276'REFERENCE MARK NO.1 IS 87 FEET BACK FROM BLUFF, 55 FEET S OF
 JV5276'STATION AND IN LINE WITH N SIDE OF BARE SPOT WHERE SOD HAS BEEN
 JV5276'REMOVED.  IT IS 97 FEET SE OF REFERENCE MARK NO.2.  REFERENCE MARK
 JV5276'NO.2 IS IN LINE WITH REAR OF HOUSE, 24 FEET SE OF HOUSE AND 75
 JV5276'FEET W OF STATION.
 JV5276'
 JV5276'TO REACH STATION FROM BALTIMORE, FROM S END HANOVER STREET
 JV5276'BRIDGE, GO S ON HANOVER STREET 1.1 MILES AND TURN RIGHT.  GO 0.3
 JV5276'MILE AND TURN LEFT ON PATAPSCO AVENUE.  GO 1.2 MILES AND TURN
 JV5276'RIGHT ON PENNINGTON AVENUE.  FOLLOW CONCRETE ROAD MARKED FORT
 JV5276'SMALLWOOD 11.2 MILES.  TURN RIGHT ON GRAVEL ROAD AND FOLLOW BAY
 JV5276'SIDE BEACH SIGNS 2.3 MILES.  TURN LEFT 0.2 MILE, TURN RIGHT .02
 JV5276'MILE, TURN LEFT 0.2 MILE, TURN LEFT 0.2 MILE AND TURN RIGHT AT
 JV5276'SMALL WHITE COTTAGE ON BLUFF WHICH IS COTTAGE OF JAMES SWAINE.
 JV5276
 JV5276                          STATION RECOVERY (1938)
 JV5276
 JV5276'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JV5276'STATION RECOVERED AS DESCRIBED, EXCEPT THAT THE STATION IS NOW IN
 JV5276'FRONT OF A BROWN SHINGLE COTTAGE AND THE BLUFF MENTIONED HAS
 JV5276'ERODED 19 FEET SINCE 1934.  IT IS 17.6 FEET FROM THE NE CORNER AND
 JV5276'11.2 FEET FROM THE SE CORNER OF THE HOUSE AND 15.5 FEET BACK OF
 JV5276'EDGE OF BLUFF.
 JV5276'
 JV5276'THE STATION MARK STAMPED BOYD, 1934 WAS LOWERED VERTICALLY ABOUT 3
 JV5276'INCHES AND IS NOW FLUSH WITH SURFACE OF GROUND.
 JV5276
 JV5276                          STATION RECOVERY (1961)
 JV5276
 JV5276'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5276'STATION AND REFERENCE MARK 2 WERE RECOVERED IN GOOD CONDITION.
 JV5276'STATION IS STAMPED BOYD 1934.  R.M.2 IS STAMPED NO 2 1934 BOYD.
 JV5276'R.M.1 COULD NOT BE FOUND.  IT IS EITHER BURIED OR WAS REMOVED IN
 JV5276'CONSTRUCTION.  THE DISTANCE TO R.M.2 COULD NOT BE CHECKED BECAUSE
 JV5276'OF HOUSES ON THE LINE.
 JV5276'
 JV5276'A NEW DESCRIPTION FOLLOWS.  THE STATION IS IN FRONT OF A WHITE
 JV5276'SHINGLE HOUSE BELONGING TO GLEN A. SNYDER IN THE SETTLEMENT OF
 JV5276'BAYSIDE BEACH.  THE FRONT OF THE HOUSE IS THE N.W. OF TWO HOUSES
 JV5276'WITH EXTENSIVE CONCRETE WALLS AND PATIOS BUILT TO KEEP THE BLUFF
 JV5276'FROM ERODING.  THE STATION IS 5.4 METERS FROM THE N.W. CORNER OF
 JV5276'THE HOUSE, 5.65 METERS FROM THE S.W. CORNER OF THE HOUSE, AND 3.4
 JV5276'METERS FROM THE CENTER OF THE TOP STEP TO THE BEACH.
 JV5276'
 JV5276'R.M.2 IS ON THE N.W. SIDE OF THE HOUSE BELONGING TO T. COX SR.,
 JV5276'1.8 METERS N.W. OF THE S.W. CORNER OF THE HOUSE AND 6.7 METERS
 JV5276'S.W. OF THE N.W. CORNER OF THE HOUSE.
 JV5276
 JV5276                          STATION RECOVERY (1973)
 JV5276
 JV5276'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV5276'THE STATION MARK WAS RECOVERED AND FOUND IN GOOD CONDITION.
 JV5276'REFERENCE MARKS ONE AND TWO WERE NOT FOUND.  THEY WERE BELIEVED
 JV5276'DESTROYED.  NEW REFERENCE MARKS THREE AND FOUR WERE ESTABLISHED AT
 JV5276'THIS DATE.
 JV5276'
 JV5276'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV5276'
 JV5276'THE STATION IS LOCATED ABOUT 15 MILES SOUTHEAST OF BALTIMORE, 4
 JV5276'MILES SOUTHEAST OF RIVIERA BEACH AND IN THE NORTHWEST PART OF
 JV5276'BAYSIDE BEACH.  THE PROPERTY IS OWNED BY MR. GLEN A. SNYDER OF
 JV5276'BAYSIDE BEACH, MARYLAND.
 JV5276'
 JV5276'TO REACH FROM THE FIRE STATION AT THE INTERSECTION OF STATE
 JV5276'HIGHWAY 173, FORT SMALLWOOD DRIVE AND RIVIERA DRIVE IN RIVIERA
 JV5276'BEACH, GO SOUTHEAST AND NORTHEAST ON STATE HIGHWAY 173, (FORT
 JV5276'SMALLWOOD DRIVE) FOR 3.8 MILES TO BAYSIDE BEACH ROAD, TURN RIGHT
 JV5276'AND GO SOUTHEAST AND NORTHEAST ON BAYSIDE BEACH ROAD FOR 2.45
 JV5276'MILES TO A T-INTERSECTION AT BAYSIDE BEACH.  TURN LEFT AND GO
 JV5276'NORTHWEST ON BAYSIDE ROAD FOR 0.05 MILE TO BURGESS ROAD.  BEAR
 JV5276'RIGHT AND GO NORTH ON BURGESS ROAD FOR 0.2 MILE TO MR. SNYDERS
 JV5276'RESIDENCE AND STATION.
 JV5276'
 JV5276'THE STATION MARK IS A STANDARD DISK STAMPED BOYD 1934, SET IN THE
 JV5276'TOP OF A 10-INCH SQUARE CONCRETE POST WHICH IS 1 INCH BELOW THE
 JV5276'SURFACE.  IT IS 19 FEET SOUTHWEST OF A SEA WALL, 9.5 FEET
 JV5276'NORTHEAST OF THE NORTHEAST ENTRANCE TO MR. SNYDERS HOUSE, 11 FEET
 JV5276'SOUTHWEST OF A SET OF CONCRETE STEPS, AND 9 FEET NORTHWEST OF A
 JV5276'18-INCH TREE AND 0.5 FOOT SOUTHEAST OF SOUTHEAST EDGE OF A SIDEWALK.
 JV5276'
 JV5276'REFERENCE MARK THREE IS A STANDARD DISK STAMPED BOYD 1934 NO 3
 JV5276'1973, SET IN THE TOP OF A 10-INCH SQUARE CONCRETE POST WHICH IS 2
 JV5276'INCHES BELOW THE SURFACE.  IT IS 22 FEET NORTHEAST OF THE TREE,
 JV5276'1.5 FEET EAST OF THE NORTHEAST ENTRANCE TO MR. SNYDERS HOUSE AND
 JV5276'1.5 FOOT SOUTHWEST OF THE SEA WALL.  IT IS AT THE JUNCTION OF THE
 JV5276'SEA WALL AND A CONCRETE BOUNDRY WALL.
 JV5276'
 JV5276'REFERENCE MARK FOUR IS A STANDARD DISK STAMPED BOYD 1934 NO 4
 JV5276'1973, CEMENTED IN A DRILL HOLE IN THE SIDEWALK ON THE NORTHEAST
 JV5276'SIDE OF MR. T. H. COXS RESIDENCE.  IT IS 13.5 FEET SOUTHWEST OF
 JV5276'THE SEA WALL 21 FEET NORTHEAST OF THE NORTHEAST ENTRANCE TO MR.
 JV5276'COXS RESIDENCE AND 14 FEET WEST OF A SMALL FLAG POLE.
 JV5276'
 JV5276'ANY OF THE INTERSECTION STATIONS MAY BE USED FOR AN AZIMUTH MARK
 JV5276'FOR THIS STATION.  SEE DESCRIPTION THEREOF.
 JV5276'
 JV5276'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN AT BAYSIDE BEACH.
 JV5276
 JV5276                          STATION RECOVERY (1975)
 JV5276
 JV5276'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5276'STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED BY R.G.
 JV5276'POUST IN 1973.
 JV5276
 JV5276                          STATION RECOVERY (1980)
 JV5276
 JV5276'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1980 (WSB)
 JV5276'BOYD 1934 RECOVERED GOOD CONDITION - 3 INCHES BELOW SURFACE.
 JV5276'
 JV5276'REF MARK NO. 3 NOT RECOVERED, NEIGHBOR SAID THE POINT WAS DESTROYED.
 JV5276'
 JV5276'REF MARK BOYD NO. 4-1973 RECOVERED GOOD, FLAG POLE 13.5 FT,
 JV5276'MIDDLE OF FGT DOOR 19.8 FT. STAIRS TO WATER 13.6 FT, FROM STA.
 JV5276'MARK 46.8 FT.
 JV5276'
 JV5276'DISTANCE AND DIRECTION FROM NEAREST TOWN--AT BAYSIDE BEACH.
 JV5276
 JV5276                          STATION RECOVERY (1984)
 JV5276
 JV5276'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1984 (WVH)
 JV5276'STATION AND REFERENCE MARK 4 WERE RECOVERED AS DESCRIBED.
 JV5276'REFERENCE MARK 3 WAS NOT SEARCHED FOR.
 JV5276'
 JV5276'RECOVERED BY J. DANIEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3142 ***********************************************************************
 DI3142  DESIGNATION -  BOZMAN 1
 DI3142  PID         -  DI3142
 DI3142  STATE/COUNTY-  MD/TALBOT
 DI3142  COUNTRY     -  US
 DI3142  USGS QUAD   -  CLAIBORNE (2016)
 DI3142
 DI3142                         *CURRENT SURVEY CONTROL
 DI3142  ______________________________________________________________________
 DI3142* NAD 83(2011) POSITION- 38 45 42.14339(N) 076 17 25.81647(W)   ADJUSTED
 DI3142* NAD 83(2011) ELLIP HT-   -31.865 (meters)        (06/27/12)   ADJUSTED
 DI3142* NAD 83(2011) EPOCH   -  2010.00
 DI3142* NAVD 88 ORTHO HEIGHT -     2.327 (meters)        7.63  (feet) ADJUSTED
 DI3142  ______________________________________________________________________
 DI3142  GEOID HEIGHT    -        -34.205 (meters)                     GEOID18
 DI3142  NAD 83(2011) X  -  1,180,233.880 (meters)                     COMP
 DI3142  NAD 83(2011) Y  - -4,838,029.280 (meters)                     COMP
 DI3142  NAD 83(2011) Z  -  3,971,704.106 (meters)                     COMP
 DI3142  LAPLACE CORR    -         -5.23  (seconds)                    DEFLEC18
 DI3142  DYNAMIC HEIGHT  -          2.325 (meters)        7.63  (feet) COMP
 DI3142  MODELED GRAVITY -    980,047.6   (mgal)                       NAVD 88
 DI3142
 DI3142  VERT ORDER      -  SECOND    CLASS I
 DI3142
 DI3142  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3142  Standards:
 DI3142         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3142            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3142  -------------------------------------------------------------------
 DI3142  NETWORK    0.42   0.59           0.18   0.16   0.30      0.13177247
 DI3142  -------------------------------------------------------------------
 DI3142  Click here for local accuracies and other accuracy information.
 DI3142
 DI3142.The horizontal coordinates were established by GPS observations
 DI3142.and adjusted by the National Geodetic Survey in June 2012.
 DI3142
 DI3142.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3142.been affixed to the stable North American tectonic plate. See 
 DI3142.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3142
 DI3142.The horizontal coordinates are valid at the epoch date displayed above
 DI3142.which is a decimal equivalence of Year/Month/Day.
 DI3142
 DI3142.The orthometric height was determined by differential leveling and
 DI3142.adjusted by the NATIONAL GEODETIC SURVEY
 DI3142.in February 2024.
 DI3142
 DI3142.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3142.GEOID18 height accuracy estimate available here.
 DI3142
 DI3142.Click photographs - Photos may exist for this station.
 DI3142
 DI3142.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3142
 DI3142.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3142
 DI3142.The ellipsoidal height was determined by GPS observations
 DI3142.and is referenced to NAD 83.
 DI3142
 DI3142.The dynamic height is computed by dividing the NAVD 88
 DI3142.geopotential number by the normal gravity value computed on the
 DI3142.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DI3142.degrees latitude (g = 980.6199 gals.).
 DI3142
 DI3142.The modeled gravity was interpolated from observed gravity values.
 DI3142
 DI3142. The following values were computed from the NAD 83(2011) position.
 DI3142
 DI3142;                    North         East     Units Scale Factor Converg.
 DI3142;SPC MD       -   121,793.414   461,663.067   MT  0.99995182   +0 26 43.1
 DI3142;SPC MD       -   399,583.89  1,514,639.58   sFT  0.99995182   +0 26 43.1
 DI3142;UTM  18      - 4,291,124.070   387,877.019   MT  0.99975481   -0 48 29.0
 DI3142
 DI3142!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3142!SPC MD       -   1.00000500  x   0.99995182  =   0.99995682
 DI3142!UTM  18      -   1.00000500  x   0.99975481  =   0.99975981
 DI3142
 DI3142:                Primary Azimuth Mark                     Grid Az
 DI3142:SPC MD       -  BOZMAN 2                                 201 50 31.5
 DI3142:UTM  18      -  BOZMAN 2                                 203 05 43.6
 DI3142
 DI3142_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8787791124(NAD 83)
 DI3142
 DI3142|---------------------------------------------------------------------|
 DI3142| PID    Reference Object                     Distance      Geod. Az  |
 DI3142|                                                           dddmmss.s |
 DI3142| DI3143 BOZMAN 2                            434.659 METERS 2021714.6 |
 DI3142|---------------------------------------------------------------------|
 DI3142
 DI3142                          SUPERSEDED SURVEY CONTROL
 DI3142
 DI3142  NAD 83(1991)-  38 45 42.14343(N)    076 17 25.81737(W) AD(       ) 1
 DI3142  ELLIP H (01/05/07)  -31.817  (m)                       GP(       ) 4 2
 DI3142  NAVD 88 (01/05/07)    2.3    (m)  GEOID03  model used  GPS OBS        
 DI3142
 DI3142.Superseded values are not recommended for survey control.
 DI3142
 DI3142.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3142.See file dsdata.pdf to determine how the superseded data were derived.
 DI3142
 DI3142_MARKER: DD = SURVEY DISK
 DI3142_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3142_STAMPING: BOZMAN 1
 DI3142_MARK LOGO: MD-041
 DI3142_PROJECTION: FLUSH
 DI3142_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3142_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3142+STABILITY: SURFACE MOTION
 DI3142_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3142+SATELLITE: SATELLITE OBSERVATIONS - November 15, 2023
 DI3142
 DI3142  HISTORY     - Date     Condition        Report By
 DI3142  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3142  HISTORY     - 20231115 GOOD             MDSHA
 DI3142
 DI3142                          STATION DESCRIPTION
 DI3142
 DI3142'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3142'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR BOZMAN,
 DI3142'MARYLAND.  IT IS ABOUT  12.1 MI (19.5 KM) WEST OF EASTON, MARYLAND,
 DI3142'ABOUT 17.6 MI (28.3 KM) NORTHWEST OF CAMBRIDGE,  MARYLAND AND ABOUT
 DI3142'16.7 MI (26.9 KM) SOUTHWEST OF WYE MILLS, MARYLAND.
 DI3142'
 DI3142'TO REACH THE STATION FROM THE INTERSECTION SR322 (EASTON BYPASS) AND
 DI3142'SR 33 (ST. MICHAELS  ROAD/ EASTON CLAIBORNE ROAD).  PROCEED WEST ON
 DI3142'SR33 FOR 11.8 MI (19.0 KM) TO INTERSECTION  WITH SR 579 (BOZMAN
 DI3142'NEAVITT ROAD).  TURN LEFT AND PROCEED 4.4 MI (7.1 KM) SOUTHWEST TO THE
 DI3142'STATION ON THE RIGHT.
 DI3142'STATION IS IN FRONT OF HOUSE 22711, 4.0 FT (1.2 M) WEST OF THE WEST
 DI3142'EDGE OF BOZMAN NEAVITT  ROAD , 163.0 FT (49.7 M) SOUTHWEST OF CENTER
 DI3142'LINE OF RIVER RIDGE ROAD AND 42.0 FT (12.8 M)  SOUTHWEST OF UTILITY
 DI3142'POLE DPL 27247-07777 (CP 116).  A 3 IN BRASS DISK STAMPED BOZMAN 1
 DI3142'SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT FLUSH WITH THE
 DI3142'GROUND.
 DI3142
 DI3142                          STATION RECOVERY (2023)
 DI3142
 DI3142'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DI3142'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3143 ***********************************************************************
 DI3143  DESIGNATION -  BOZMAN 2
 DI3143  PID         -  DI3143
 DI3143  STATE/COUNTY-  MD/TALBOT
 DI3143  COUNTRY     -  US
 DI3143  USGS QUAD   -  CLAIBORNE (2016)
 DI3143
 DI3143                         *CURRENT SURVEY CONTROL
 DI3143  ______________________________________________________________________
 DI3143* NAD 83(2011) POSITION- 38 45 29.10070(N) 076 17 32.64390(W)   ADJUSTED
 DI3143* NAD 83(2011) ELLIP HT-   -32.217 (meters)        (06/27/12)   ADJUSTED
 DI3143* NAD 83(2011) EPOCH   -  2010.00
 DI3143* NAVD 88 ORTHO HEIGHT -     1.974 (meters)        6.48  (feet) ADJUSTED
 DI3143  ______________________________________________________________________
 DI3143  GEOID HEIGHT    -        -34.208 (meters)                     GEOID18
 DI3143  NAD 83(2011) X  -  1,180,133.341 (meters)                     COMP
 DI3143  NAD 83(2011) Y  - -4,838,312.698 (meters)                     COMP
 DI3143  NAD 83(2011) Z  -  3,971,390.270 (meters)                     COMP
 DI3143  LAPLACE CORR    -         -5.25  (seconds)                    DEFLEC18
 DI3143  DYNAMIC HEIGHT  -          1.973 (meters)        6.47  (feet) COMP
 DI3143  MODELED GRAVITY -    980,047.2   (mgal)                       NAVD 88
 DI3143
 DI3143  VERT ORDER      -  SECOND    CLASS I
 DI3143
 DI3143  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3143  Standards:
 DI3143         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3143            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3143  -------------------------------------------------------------------
 DI3143  NETWORK    0.43   0.59           0.19   0.16   0.30      0.13168665
 DI3143  -------------------------------------------------------------------
 DI3143  Click here for local accuracies and other accuracy information.
 DI3143
 DI3143.The horizontal coordinates were established by GPS observations
 DI3143.and adjusted by the National Geodetic Survey in June 2012.
 DI3143
 DI3143.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3143.been affixed to the stable North American tectonic plate. See 
 DI3143.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3143
 DI3143.The horizontal coordinates are valid at the epoch date displayed above
 DI3143.which is a decimal equivalence of Year/Month/Day.
 DI3143
 DI3143.The orthometric height was determined by differential leveling and
 DI3143.adjusted by the NATIONAL GEODETIC SURVEY
 DI3143.in February 2024.
 DI3143
 DI3143.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3143.GEOID18 height accuracy estimate available here.
 DI3143
 DI3143.Click photographs - Photos may exist for this station.
 DI3143
 DI3143.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3143
 DI3143.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3143
 DI3143.The ellipsoidal height was determined by GPS observations
 DI3143.and is referenced to NAD 83.
 DI3143
 DI3143.The dynamic height is computed by dividing the NAVD 88
 DI3143.geopotential number by the normal gravity value computed on the
 DI3143.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DI3143.degrees latitude (g = 980.6199 gals.).
 DI3143
 DI3143.The modeled gravity was interpolated from observed gravity values.
 DI3143
 DI3143. The following values were computed from the NAD 83(2011) position.
 DI3143
 DI3143;                    North         East     Units Scale Factor Converg.
 DI3143;SPC MD       -   121,389.977   461,501.359   MT  0.99995195   +0 26 38.8
 DI3143;SPC MD       -   398,260.28  1,514,109.04   sFT  0.99995195   +0 26 38.8
 DI3143;UTM  18      - 4,290,724.345   387,706.560   MT  0.99975528   -0 48 33.0
 DI3143
 DI3143!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3143!SPC MD       -   1.00000505  x   0.99995195  =   0.99995700
 DI3143!UTM  18      -   1.00000505  x   0.99975528  =   0.99976033
 DI3143
 DI3143:                Primary Azimuth Mark                     Grid Az
 DI3143:SPC MD       -  BOZMAN 1                                 021 50 31.5
 DI3143:UTM  18      -  BOZMAN 1                                 023 05 43.3
 DI3143
 DI3143_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8770690724(NAD 83)
 DI3143
 DI3143|---------------------------------------------------------------------|
 DI3143| PID    Reference Object                     Distance      Geod. Az  |
 DI3143|                                                           dddmmss.s |
 DI3143| DI3142 BOZMAN 1                            434.659 METERS 0221710.3 |
 DI3143|---------------------------------------------------------------------|
 DI3143
 DI3143                          SUPERSEDED SURVEY CONTROL
 DI3143
 DI3143  NAD 83(1991)-  38 45 29.10074(N)    076 17 32.64480(W) AD(       ) 1
 DI3143  ELLIP H (01/05/07)  -32.170  (m)                       GP(       ) 4 2
 DI3143  NAVD 88 (01/05/07)    2.0    (m)  GEOID03  model used  GPS OBS        
 DI3143
 DI3143.Superseded values are not recommended for survey control.
 DI3143
 DI3143.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3143.See file dsdata.pdf to determine how the superseded data were derived.
 DI3143
 DI3143_MARKER: DD = SURVEY DISK
 DI3143_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3143_STAMPING: BOZMAN 2
 DI3143_MARK LOGO: MD-041
 DI3143_PROJECTION: FLUSH
 DI3143_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3143_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3143+STABILITY: SURFACE MOTION
 DI3143_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3143+SATELLITE: SATELLITE OBSERVATIONS - November 15, 2023
 DI3143
 DI3143  HISTORY     - Date     Condition        Report By
 DI3143  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3143  HISTORY     - 20231115 GOOD             MDSHA
 DI3143
 DI3143                          STATION DESCRIPTION
 DI3143
 DI3143'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3143'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR BOZMAN,
 DI3143'MARYLAND.  IT IS ABOUT  12.2 MI (19.6 KM) WEST OF EASTON, MARYLAND,
 DI3143'ABOUT 17.6 MI (28.3 KM) NORTHWEST OF CAMBRIDGE,  MARYLAND AND ABOUT
 DI3143'17.0 MI (27.3 KM) SOUTHWEST OF WYE MILLS, MARYLAND.
 DI3143'
 DI3143'TO REACH THE STATION FROM THE INTERSECTION SR322 (EASTON BYPASS) AND
 DI3143'SR 33 (ST. MICHAELS  ROAD/ EASTON CLAIBORNE ROAD) PROCEED WEST ON SR33
 DI3143'FOR 11.8 MI (19.0 KM) TO INTERSECTION  WITH SR 579 (BOZMAN NEAVITT
 DI3143'ROAD).  TURN LEFT AND PROCEED 4.7 MI (7.6 KM) SOUTHWEST TO THE
 DI3143'STATION ON THE LEFT.
 DI3143'STATION IS 3.0 FT (0.9 M) EAST OF THE EAST EDGE OF BOZMAN NEAVITT ROAD
 DI3143', 69.0 FT (21.0 M) NORTH  OF CENTER LINE OF DRIVEWAY TO HOUSE 7543 AND
 DI3143'53.0 FT (16.1 M) NORTH OF CENTER LINE OF  HARDCASTLE LANE.  A 3 IN
 DI3143'BRASS DISK STAMPED BOZMAN 2 SET IN THE TOP OF A 1 FT (0.3 M)  CONCRETE
 DI3143'MONUMENT FLUSH WITH THE GROUND.
 DI3143
 DI3143                          STATION RECOVERY (2023)
 DI3143
 DI3143'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DI3143'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6787 ***********************************************************************
 HV6787  DESIGNATION -  BRAD
 HV6787  PID         -  HV6787
 HV6787  STATE/COUNTY-  MD/ST MARYS
 HV6787  COUNTRY     -  US
 HV6787  USGS QUAD   -  HOLLYWOOD (2016)
 HV6787
 HV6787                         *CURRENT SURVEY CONTROL
 HV6787  ______________________________________________________________________
 HV6787* NAD 83(1991) POSITION- 38 22 13.20332(N) 076 31 11.84537(W)   ADJUSTED
 HV6787* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 HV6787  ______________________________________________________________________
 HV6787  GEOID HEIGHT    -        -34.185 (meters)                     GEOID18
 HV6787  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 HV6787  HORZ ORDER      -  THIRD
 HV6787
 HV6787.The horizontal coordinates were established by classical geodetic methods
 HV6787.and adjusted by the National Geodetic Survey in January 1992.
 HV6787
 HV6787.The orthometric height was scaled from a topographic map.
 HV6787
 HV6787.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6787.GEOID18 height accuracy estimate available here.
 HV6787
 HV6787.Click photographs - Photos may exist for this station.
 HV6787
 HV6787.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6787
 HV6787. The following values were computed from the NAD 83(1991) position.
 HV6787
 HV6787;                    North         East     Units Scale Factor Converg.
 HV6787;SPC MD       -    78,220.408   441,949.764   MT  0.99998851   +0 18 04.6
 HV6787;SPC MD       -   256,628.12  1,449,963.52   sFT  0.99998851   +0 18 04.6
 HV6787;UTM  18      - 4,247,999.058   367,222.104   MT  0.99981712   -0 56 37.1
 HV6787
 HV6787!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6787!SPC MD       -   1.00000416  x   0.99998851  =   0.99999267
 HV6787!UTM  18      -   1.00000416  x   0.99981712  =   0.99982127
 HV6787
 HV6787:                Primary Azimuth Mark                     Grid Az
 HV6787:SPC MD       -  SOTTLER                                  315 07 12.0
 HV6787:UTM  18      -  SOTTLER                                  316 21 53.7
 HV6787
 HV6787_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6722247999(NAD 83)
 HV6787
 HV6787|---------------------------------------------------------------------|
 HV6787| PID    Reference Object                     Distance      Geod. Az  |
 HV6787|                                                           dddmmss.s |
 HV6787| HV6786 PETERSONS POINT LIGHTHOUSE          APPROX. 1.9 KM 0384229.0 |
 HV6787| CX2114 BRAD RM 1                            19.962 METERS 22558     |
 HV6787| CX2115 BRAD RM 2                            16.695 METERS 28947     |
 HV6787| HV6759 SOTTLER                             APPROX. 2.1 KM 3152516.6 |
 HV6787|---------------------------------------------------------------------|
 HV6787
 HV6787                          SUPERSEDED SURVEY CONTROL
 HV6787
 HV6787  NAD 83(1986)-  38 22 13.20301(N)    076 31 11.85956(W) AD(       ) 3
 HV6787  NAD 27      -  38 22 12.75100(N)    076 31 13.02000(W) AD(       ) 3
 HV6787
 HV6787.Superseded values are not recommended for survey control.
 HV6787
 HV6787.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6787.See file dsdata.pdf to determine how the superseded data were derived.
 HV6787
 HV6787_MARKER: DS = TRIANGULATION STATION DISK
 HV6787_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6787_STAMPING: BRAD 1943
 HV6787_MARK LOGO: CGS
 HV6787_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6787+STABILITY: SURFACE MOTION
 HV6787
 HV6787  HISTORY     - Date     Condition        Report By
 HV6787  HISTORY     - 1943     MONUMENTED       CGS
 HV6787  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6787  HISTORY     - 1974     MARK NOT FOUND   NGS
 HV6787
 HV6787                          STATION DESCRIPTION
 HV6787
 HV6787'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (BHR)
 HV6787'STATION IS LOCATED ON THE S SHORE OF THE PATUXENT RIVER, 4.4
 HV6787'MILES NW OF THE TOWN OF SOLOMONS, AND 0.9 MILE SE OF SOTTERLEY
 HV6787'POINT.  IT IS ON A 20-FOOT BLUFF NEAR A GROUP OF FARM HOUSES,
 HV6787'ABOUT 15 FEET FROM THE BLUFFS EDGE IN FRONT OF A GREY FARMHOUSE
 HV6787'WITH LARGE PORCH AND GABLE WITH SPIRE FACING THE RIVER, AND ABOUT
 HV6787'20 FEET E OF TWO 12-INCH DIAMETER TREES.  MARK IS FLUSH WITH THE
 HV6787'GROUND.
 HV6787'
 HV6787'STATION AND REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE.
 HV6787'
 HV6787'REFERENCE MARK 1 IS ABOUT 60 FEET W OF THE STATION, SE OF HOUSE,
 HV6787'AND 6 FEET E OF THE CORNER OF A CHICKEN-WIRE FENCE.
 HV6787'
 HV6787'REFERENCE MARK 2 IS ABOUT 55 FEET NW OF THE STATION AND NW OF TWO
 HV6787'TREES DIRECTLY IN FRONT OF THE HOUSE GABLE FACING THE RIVER.
 HV6787
 HV6787                          STATION RECOVERY (1960)
 HV6787
 HV6787'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6787'STATION NOT RECOVERED AFTER A THOROUGH SEARCH OF THE AREA.  THE
 HV6787'OWNER OF THE PROPERTY STATED THAT THE STATION SITE WAS GRADED AND
 HV6787'THEN COVERED WITH TOP SOIL.  THE STATION AND REFERENCE MARKS HAVE
 HV6787'UNDOUBTEDLY BEEN DESTROYED.
 HV6787
 HV6787                          STATION RECOVERY (1974)
 HV6787
 HV6787'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV6787'A SEARCH WAS MADE FOR THE STATION AND NO MARKS WERE FOUND.  IT IS
 HV6787'BELIEVED ALL MARKS WERE WASHED AWAY BY HIGH WATER.
 HV6787'
 HV6787'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 4-1/2 MILES
 HV6787'NORTHWEST OF SOLOMONS ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1500 ***********************************************************************
 JW1500  DESIGNATION -  BRADDOCK
 JW1500  PID         -  JW1500
 JW1500  STATE/COUNTY-  MD/ALLEGANY
 JW1500  COUNTRY     -  US
 JW1500  USGS QUAD   -  CUMBERLAND (2016)
 JW1500
 JW1500                         *CURRENT SURVEY CONTROL
 JW1500  ______________________________________________________________________
 JW1500* NAD 83(2011) POSITION- 39 38 42.97629(N) 078 48 17.26430(W)   ADJUSTED
 JW1500* NAD 83(2011) ELLIP HT-   401.484 (meters)        (06/27/12)   ADJUSTED
 JW1500* NAD 83(2011) EPOCH   -  2010.00
 JW1500* NAVD 88 ORTHO HEIGHT -   434.0   (meters)     1424.    (feet) VERTCON3
 JW1500  ______________________________________________________________________
 JW1500  GEOID HEIGHT    -        -32.582 (meters)                     GEOID18
 JW1500  NAD 83(2011) X  -    954,887.338 (meters)                     COMP
 JW1500  NAD 83(2011) Y  - -4,824,652.828 (meters)                     COMP
 JW1500  NAD 83(2011) Z  -  4,047,992.148 (meters)                     COMP
 JW1500  LAPLACE CORR    -         -6.84  (seconds)                    DEFLEC18
 JW1500
 JW1500  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1500  Standards:
 JW1500         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1500            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1500  -------------------------------------------------------------------
 JW1500  NETWORK    1.65   3.27           0.72   0.62   1.67     -0.04575778
 JW1500  -------------------------------------------------------------------
 JW1500  Click here for local accuracies and other accuracy information.
 JW1500
 JW1500.The horizontal coordinates were established by GPS observations
 JW1500.and adjusted by the National Geodetic Survey in June 2012.
 JW1500
 JW1500.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1500.been affixed to the stable North American tectonic plate. See 
 JW1500.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1500
 JW1500.The horizontal coordinates are valid at the epoch date displayed above
 JW1500.which is a decimal equivalence of Year/Month/Day.
 JW1500
 JW1500.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1500.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1500
 JW1500.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1500.GEOID18 height accuracy estimate available here.
 JW1500
 JW1500.Click photographs - Photos may exist for this station.
 JW1500
 JW1500.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1500
 JW1500.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1500
 JW1500.The ellipsoidal height was determined by GPS observations
 JW1500.and is referenced to NAD 83.
 JW1500
 JW1500. The following values were computed from the NAD 83(2011) position.
 JW1500
 JW1500;                    North         East     Units Scale Factor Converg.
 JW1500;SPC MD       -   221,175.585   245,090.912   MT  1.00004000   -1 07 57.9
 JW1500;SPC MD       -   725,640.23    804,102.43   sFT  1.00004000   -1 07 57.9
 JW1500;SPC PA S     -    35,177.039   509,459.525   MT  1.00005752   -0 41 03.6
 JW1500;SPC PA S     -   115,410.00  1,671,451.79   sFT  1.00005752   -0 41 03.6
 JW1500;SPC WV N     -   127,375.747   659,668.103   MT  0.99994080   +0 26 36.2
 JW1500;SPC WV N     -   417,898.60  2,164,261.10   sFT  0.99994080   +0 26 36.2
 JW1500;UTM  17      - 4,390,689.835   688,356.654   MT  1.00003681   +1 24 03.7
 JW1500
 JW1500!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1500!SPC MD       -   0.99993702  x   1.00004000  =   0.99997701
 JW1500!SPC PA S     -   0.99993702  x   1.00005752  =   0.99999453
 JW1500!SPC WV N     -   0.99993702  x   0.99994080  =   0.99987782
 JW1500!UTM  17      -   0.99993702  x   1.00003681  =   0.99997382
 JW1500
 JW1500:                Primary Azimuth Mark                     Grid Az
 JW1500:SPC MD       -  LOVERS LEAP                              041 12 15.2
 JW1500:SPC PA S     -  LOVERS LEAP                              040 45 20.9
 JW1500:SPC WV N     -  LOVERS LEAP                              039 37 41.1
 JW1500:UTM  17      -  LOVERS LEAP                              038 40 13.6
 JW1500
 JW1500_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8835690689(NAD 83)
 JW1500
 JW1500|---------------------------------------------------------------------|
 JW1500| PID    Reference Object                     Distance      Geod. Az  |
 JW1500|                                                           dddmmss.s |
 JW1500| CK6727 BRADDOCK RM 2                        20.805 METERS 01029     |
 JW1500| JW1506 LOVERS LEAP                         APPROX. 3.5 KM 0400417.3 |
 JW1500| JW1496 CUMBERLAND CENTER ST METH CH        APPROX. 3.6 KM 0715518.0 |
 JW1500| JW1494 CUMBERLAND ALLEGANY CO CTHSE        APPROX. 3.3 KM 0791741.2 |
 JW1500| JW1483 CUMBERLAND RADIO STA WTBO MAST      APPROX. 4.9 KM 0861414.6 |
 JW1500| JW1493 CUMBERLAND RADIO STA WDYK MAST      APPROX. 4.5 KM 0884459.2 |
 JW1500| JW1498 CUMBERLAND POTOMAC ED PWR STK       APPROX. 2.2 KM 0941351.9 |
 JW1500| JW1495 CUMBERLAND KELLY TIRE CO STK        APPROX. 2.1 KM 1043101.1 |
 JW1500| CK6726 BRADDOCK RM 1                        21.849 METERS 24519     |
 JW1500| JW1499 CUMBERLAND BRADDOCK WATER TANK       17.457 METERS 30212     |
 JW1500|---------------------------------------------------------------------|
 JW1500
 JW1500                          SUPERSEDED SURVEY CONTROL
 JW1500
 JW1500  NAD 83(2007)-  39 38 42.97646(N)    078 48 17.26499(W) AD(2002.00) 0
 JW1500  ELLIP H (02/10/07)  401.504  (m)                       GP(2002.00)    
 JW1500  ELLIP H (06/09/03)  401.508  (m)                       GP(       ) 4 1
 JW1500  NAD 83(1995)-  39 38 42.97712(N)    078 48 17.26508(W) AD(       ) 2
 JW1500  ELLIP H (04/01/98)  401.539  (m)                       GP(       ) 4 1
 JW1500  ELLIP H (03/12/93)  401.448  (m)                       GP(       ) 4 2
 JW1500  NAD 83(1991)-  39 38 42.97671(N)    078 48 17.26826(W) AD(       ) 2
 JW1500  NAD 83(1986)-  39 38 42.98055(N)    078 48 17.27459(W) AD(       ) 2
 JW1500  NAD 27      -  39 38 42.66600(N)    078 48 18.20800(W) AD(       ) 2
 JW1500  NGVD 29 (03/12/93)  434.2    (m)  UNKNOWN  model used  GPS OBS        
 JW1500
 JW1500.Superseded values are not recommended for survey control.
 JW1500
 JW1500.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1500.See file dsdata.pdf to determine how the superseded data were derived.
 JW1500
 JW1500_MARKER: DS = TRIANGULATION STATION DISK
 JW1500_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1500_STAMPING: BRADDOCK 1955
 JW1500_MARK LOGO: CGS
 JW1500_MAGNETIC: N = NO MAGNETIC MATERIAL
 JW1500_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1500+STABILITY: SURFACE MOTION
 JW1500_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1500+SATELLITE: SATELLITE OBSERVATIONS - July 21, 1992
 JW1500
 JW1500  HISTORY     - Date     Condition        Report By
 JW1500  HISTORY     - 1955     MONUMENTED       CGS
 JW1500  HISTORY     - 1955     GOOD             CGS
 JW1500  HISTORY     - 1973     GOOD             NGS
 JW1500  HISTORY     - 19920721 GOOD             NOS
 JW1500
 JW1500                          STATION DESCRIPTION
 JW1500
 JW1500'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1500'THE STATION IS LOCATED ABOUT 0.3 MILE WEST OF THE CITY LIMITS OF
 JW1500'CUMBERLAND AND ADJACENT TO THE BRADDOCK WATER TANK WHICH IS
 JW1500'OWNED BY THE CITY OF CUMBERLAND.  IT IS 64 FEET SOUTH OF A 4 IN
 JW1500'X 4 IN WHITE WITNESS POST AND 34 FEET SOUTH OF THE NORTHEAST
 JW1500'CORNER OF A FENCE INCLOSING THE WATER TANK.
 JW1500'
 JW1500'THE STATION MARK PROJECTS 3 INCHES, AND THE DISK IS STAMPED
 JW1500'BRADDOCK 1955.
 JW1500'
 JW1500'REFERENCE MARK 1 IS 31 FEET SOUTH OF THE SOUTHEAST CORNER OF
 JW1500'THE FENCE.  THE MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED
 JW1500'BRADDOCK NO 1 1955.
 JW1500'
 JW1500'REFERENCE MARK 2 IS 2 FEET SOUTH OF THE WITNESS POST AND 19
 JW1500'FEET EAST OF THE CENTER OF THE ROAD LEADING TO THE TANK.  THE
 JW1500'MARK PROJECTS 6 INCHES, AND THE DISK IS STAMPED BRADDOCK NO 2 1955.
 JW1500'
 JW1500'NO SUITABLE LOCATION COULD BE FOUND FOR AN AZIMUTH MARK.
 JW1500'
 JW1500'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JW1500
 JW1500                          STATION RECOVERY (1955)
 JW1500
 JW1500'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955
 JW1500'RECOVERED IN GOOD CONDITION.
 JW1500
 JW1500                          STATION RECOVERY (1973)
 JW1500
 JW1500'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JW1500'THE STATION WAS RECOVERED AND ALL MARKS WERE FOUND IN GOOD
 JW1500'CONDITION AS DESCRIBED IN THE 1955 DESCRIPTION.  THIS STATION
 JW1500'WAS RECOVERED IN AN ATTEMPT TO ESTABLISH AN AZIMUTH FROM
 JW1500'TRIANGULATION STATION LOVERS LEAP 1941.
 JW1500'
 JW1500'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JW1500'3 MILES WEST OF CUMBERLAND.
 JW1500
 JW1500                          STATION RECOVERY (1992)
 JW1500
 JW1500'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JW1500'LOCATED 0.3 MI (0.5 KM) WEST OF THE LIMITS OF THE CITY OF CUMBERLAND
 JW1500'AND JUST EAST OF THE BRADDOCK WATER TANK.  IT IS, 71.68 NORTHEAST OF
 JW1500'REFERENCE MARK NO 1 WHICH IS 31 FT (9.4 M) SOUTH OF THE SE CORNER OF
 JW1500'A FENCE AROUND THE WATER TANK AND PROJECTING 5 CM ABOVE GROUND LEVEL,
 JW1500'68.26 FT (20.81 M) SOUTH OF REFERENCE MARK NO 2 WHICH IS 2 FT
 JW1500'(0.6 M) SOUTH OF A WITNESS POST AND 19 FT (5.8 M) EAST OF THE CENTER
 JW1500'OF THE ROAD LEADING TO THE TANK AND PROJECTING 13 CM ABOVE GROUND
 JW1500'LEVEL, 64 FT (19.5 M) SOUTH OF A 4 IN BY 4 IN WITNESS POST, 57.27 FT
 JW1500'(17.46 M) EAST OF THE CENTER OF THE BRADDOCK WATER TANK AND 34 FEET
 JW1500'(10.4 M) SOUTH OF THE NORTHEAST CORNER OF A FENCE ENCLOSING THE WATER
 JW1500'TANK. RECOVERED IN GOOD CONDITION BY J.A. SWALLOW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1811 ***********************************************************************
 HU1811  DESIGNATION -  BRADLEY
 HU1811  PID         -  HU1811
 HU1811  STATE/COUNTY-  MD/WICOMICO
 HU1811  COUNTRY     -  US
 HU1811  USGS QUAD   -  HEBRON (2016)
 HU1811
 HU1811                         *CURRENT SURVEY CONTROL
 HU1811  ______________________________________________________________________
 HU1811* NAD 83(1991) POSITION- 38 27 32.20583(N) 075 39 46.23446(W)   ADJUSTED
 HU1811* NAVD 88 ORTHO HEIGHT -    11.850 (meters)       38.88  (feet) ADJUSTED
 HU1811  ______________________________________________________________________
 HU1811  GEOID HEIGHT    -        -35.670 (meters)                     GEOID18
 HU1811  LAPLACE CORR    -         -1.52  (seconds)                    DEFLEC18
 HU1811  DYNAMIC HEIGHT  -         11.842 (meters)       38.85  (feet) COMP
 HU1811  MODELED GRAVITY -    980,013.3   (mgal)                       NAVD 88
 HU1811
 HU1811  HORZ ORDER      -  SECOND
 HU1811  VERT ORDER      -  SECOND    CLASS I
 HU1811
 HU1811.The horizontal coordinates were established by classical geodetic methods
 HU1811.and adjusted by the National Geodetic Survey in January 1992.
 HU1811
 HU1811.The orthometric height was determined by differential leveling and
 HU1811.adjusted by the NATIONAL GEODETIC SURVEY
 HU1811.in June 1991.
 HU1811
 HU1811.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1811.GEOID18 height accuracy estimate available here.
 HU1811
 HU1811.Click photographs - Photos may exist for this station.
 HU1811
 HU1811.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1811
 HU1811.The dynamic height is computed by dividing the NAVD 88
 HU1811.geopotential number by the normal gravity value computed on the
 HU1811.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1811.degrees latitude (g = 980.6199 gals.).
 HU1811
 HU1811.The modeled gravity was interpolated from observed gravity values.
 HU1811
 HU1811. The following values were computed from the NAD 83(1991) position.
 HU1811
 HU1811;                    North         East     Units Scale Factor Converg.
 HU1811;SPC MD       -    88,800.955   516,703.134   MT  0.99997615   +0 50 21.3
 HU1811;SPC MD       -   291,341.13  1,695,216.87   sFT  0.99997615   +0 50 21.3
 HU1811;UTM  18      - 4,256,946.096   442,168.421   MT  0.99964119   -0 24 44.2
 HU1811
 HU1811!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1811!SPC MD       -   1.00000374  x   0.99997615  =   0.99997989
 HU1811!UTM  18      -   1.00000374  x   0.99964119  =   0.99964493
 HU1811
 HU1811:                Primary Azimuth Mark                     Grid Az
 HU1811:SPC MD       -  BRADLEY AZ MK 2                          192 01 38.4
 HU1811:UTM  18      -  BRADLEY AZ MK 2                          193 16 43.9
 HU1811
 HU1811_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4216856946(NAD 83)
 HU1811
 HU1811|---------------------------------------------------------------------|
 HU1811| PID    Reference Object                     Distance      Geod. Az  |
 HU1811|                                                           dddmmss.s |
 HU1811| HU1812 BOUNDARY MON 33 E W DE MD            10.032 METERS 07408     |
 HU1811| DC7854 BRADLEY RM 1                         16.831 METERS 08439     |
 HU1811| HU1830 BRADLEY AZ MK 2                     492.962 METERS 1925159.7 |
 HU1811| DC7856 BRADLEY RM 3 AZIMUTH                               1931427.1 |
 HU1811| HU1814 DUMP B                              306.849 METERS 19735     |
 HU1811| DC7855 BRADLEY RM 2                         35.508 METERS 19820     |
 HU1811| HU1829 MONUMENT E W 33 DE MD                24.825 METERS 32811     |
 HU1811|---------------------------------------------------------------------|
 HU1811
 HU1811                          SUPERSEDED SURVEY CONTROL
 HU1811
 HU1811  NAD 83(1986)-  38 27 32.20102(N)    075 39 46.25761(W) AD(       ) 2
 HU1811  NAD 27      -  38 27 31.78570(N)    075 39 47.50728(W) AD(       ) 2
 HU1811  NGVD 29 (06/12/91)   12.096  (m)           39.69   (f) ADJUSTED    2 1
 HU1811  NGVD 29 (07/19/86)   11.9    (m)           39.     (f) VERT ANG       
 HU1811
 HU1811.Superseded values are not recommended for survey control.
 HU1811
 HU1811.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1811.See file dsdata.pdf to determine how the superseded data were derived.
 HU1811
 HU1811_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1811_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1811_STAMPING: BRADLEY 1974
 HU1811_MARK LOGO: NGS
 HU1811_PROJECTION: RECESSED 10 CENTIMETERS
 HU1811_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1811_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1811+STABILITY: SURFACE MOTION
 HU1811_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU1811+SATELLITE: SATELLITE OBSERVATIONS - September 05, 2018
 HU1811
 HU1811  HISTORY     - Date     Condition        Report By
 HU1811  HISTORY     - 1974     MONUMENTED       NGS
 HU1811  HISTORY     - 1976     GOOD             NGS
 HU1811  HISTORY     - 1977     GOOD             NGS
 HU1811  HISTORY     - 19810629 GOOD             NGS
 HU1811  HISTORY     - 19900110 GOOD             NGS
 HU1811  HISTORY     - 20180905 GOOD             PROFLN
 HU1811
 HU1811                          STATION DESCRIPTION
 HU1811
 HU1811'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1811'THE STATION IS LOCATED ABOUT 4.6 MILES WEST OF DELMAR, DELAWARE,
 HU1811'3 MILES NORTH-NORTHEAST OF HEBRON, MARYLAND AND ON LAND OWNED
 HU1811'BY MRS. MYRA BRADLEY, ROUTE 2, DELMAR, DELAWARE, TELEPHONE
 HU1811'NUMBER 896-9456.
 HU1811'
 HU1811'TO REACH THE STATION FROM THE RAILROAD CROSSING AND STATE ROAD
 HU1811'54 IN DELMAR, DELAWARE, GO WEST ON STATE ROAD 54 FOR 4.0 MILES
 HU1811'TO A PAVED CROSSROAD.  TURN LEFT AND GO SOUTHWEST ON A PAVED
 HU1811'ROAD FOR 0.55 MILE TO A Y-FORK, TAKE THE LEFT FORK AND GO SOUTH ON
 HU1811'A PAVED ROAD FOR 0.3 MILE TO MRS. MYRA BRADLEY HOUSE AND THE
 HU1811'STATION ON THE RIGHT.  CONTINUE SOUTH ON THE PAVED ROAD FOR 0.3
 HU1811'MILE TO RM 3 (AZ. MK.) IN THE NORTHEAST ANGLE OF A PAVED T-ROAD.
 HU1811'
 HU1811'STATION MARKS ARE STANDARD DISKS STAMPED BRADLEY 1974.  THE
 HU1811'SURFACE DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE
 HU1811'MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 61 FEET
 HU1811'EAST OF THE NORTHEAST CORNER OF MRS. BRADLEY HOUSE, 29 FEET
 HU1811'NORTHWEST OF THE CENTER OF THE PAVED ROAD, 8 FEET WEST OF A SIGN,
 HU1811'SPRING HILL LANE, AND 6 FEET NORTHEAST OF POWERLINE POLE NUMBER
 HU1811'122.  THE UNDERGROUND DISK IS SET IN THE TOP OF AN IRREGULAR
 HU1811'MASS OF CONCRETE 42 INCHES BELOW THE GROUND SURFACE.
 HU1811'
 HU1811'REFERENCE MARK 1, A STANDARD DISK STAMPED BRADLEY NO 1 1974, IS
 HU1811'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT IS
 HU1811'FLUSH WITH THE GROUND SURFACE.  IT IS 35 FEET NORTH OF A 24-INCH
 HU1811'MAPLE TREE AND 14 FEET SOUTHEAST OF THE CENTER OF THE PAVED ROAD.
 HU1811'
 HU1811'REFERENCE MARK 2, A STANDARD DISK STAMPED BRADLEY NO 2 1974, IS
 HU1811'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1811'IS FLUSH WITH THE GROUND SURFACE.  IT IS 55 FEET SOUTH OF A
 HU1811'14-INCH COTTONWOOD TREE AND 13 FEET WEST-NORTHWEST OF THE CENTER
 HU1811'OF THE PAVED ROAD.
 HU1811'
 HU1811'REFERENCE MARK 3, A STANDARD DISK STAMPED BRADLEY NO 3 1974, IS
 HU1811'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT IS
 HU1811'FLUSH WITH THE GROUND SURFACE.  IT IS 40 FEET EAST OF THE CENTER
 HU1811'OF THE PAVED ROAD, 19 FEET NORTH OF THE CENTER OF A PAVED ROAD
 HU1811'AND 3 FEET EAST OF A STOP SIGN.  THE MARK SERVES AS AN AZIMUTH
 HU1811'MARK.
 HU1811
 HU1811                          STATION RECOVERY (1976)
 HU1811
 HU1811'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1811'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1811'CONDITION.  THE DIRECTION TO ALL MARKS WERE WITHIN CLOSE AGREEMENT
 HU1811'WITH THE 1974 OBSERVATIONS.  A SHORTER DISTANCE OF 0.26 FOOT
 HU1811'OR 0.081 METER WAS FOUND TO REFERENCE MARK 1.  A SHORTER DISTANCE
 HU1811'OF 0.09 FOOT OR 0.028 METER WAS NOTED TO REFERENCE MARK 2.  A
 HU1811'SHORTER DISTANCE OF 0.04 FOOT OR 0.012 METER WAS NOTED BETWEEN
 HU1811'THE REFERENCE MARKS.  THE PREVIOUS MEASUREMENTS APPEARED TO BE
 HU1811'IN ERROR.  THIS WAS DETERMINED BY COMPUTING THE SIDE ANGLE
 HU1811'SIDE ON THE 1974 OBSERVATIONS.
 HU1811'
 HU1811'THE 1974 DESCRIPTION IS ADEQUATE.
 HU1811'
 HU1811'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1811'3 MILES NORTH-NORTHEAST OF HEBRON.
 HU1811
 HU1811                          STATION RECOVERY (1977)
 HU1811
 HU1811'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HU1811'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1811'CONDITION AS PREVIOUSLY DESCRIBED.  THE DISTANCES AND DIRECTIONS TO
 HU1811'ALL MARKS WERE WITHIN CLOSE AGREEMENT WITH THE PREVIOUS
 HU1811'DESCRIPTION.
 HU1811'
 HU1811'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 33 WAS RESET AT
 HU1811'THIS DATE, SEE DESCRIPTION THEREOF.
 HU1811'
 HU1811'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1811'3 MILES NORTH-NORTHEAST OF HEBRON.
 HU1811
 HU1811                          STATION RECOVERY (1981)
 HU1811
 HU1811'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HU1811'THE STATION MARK AND BOTH REFERENCE MARKS WERE RECOVERED AND FOUND IN
 HU1811'GOOD CONDITION AS DESCRIBED.  A SHORTER DISTANCE OF 0.02 FOOT,
 HU1811'(0.01 M) OR 0.006 METER (0.020 FT) WAS NOTED TO REFERENCE MARK TWO.
 HU1811'A SHORTER DISTANCE OF 0.03 FOOT, (0.01 M) OR 0.010 METER (0.033 FT)
 HU1811'WAS NOTED BETWEEN REFERENCE MARK ONE AND TWO.  ALL OTHER DISTANCES AND
 HU1811'DIRECTIONS WERE WITHIN CLOSE AGREEMENT WITH THE MOST RECENT
 HU1811'INFORMATION AVAILABLE.
 HU1811'THE AZIMUTH MARK WAS FOUND DESTROYED.  A NEW AZIMUTH MARK TWO WAS
 HU1811'ESTABLISHED ON THIS DATE.  IN ADDITION, A NEW MARYLAND-DELAWARE
 HU1811'BOUNDARY MONUMENT 33 WAS ESTABLISHED, SEE DESCRIPTION THEREOF.
 HU1811
 HU1811                          STATION RECOVERY (1990)
 HU1811
 HU1811'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU1811'1.8 KM (1.12 MI) NORTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU1811'ROAD) FROM THE POST OFFICE IN HEBRON, THENCE 0.7 KM (0.43 MI)
 HU1811'EASTERLY ALONG MEMORY GARDEN LANE, THENCE 3.3 KM (2.05 MI) NORTHERLY
 HU1811'ALONG SPRING HILL LANE, 0.5 KM (0.31 MI) NORTH OF THE INTERSECTION OF
 HU1811'WALLER ROAD, 18.6 M (61.02 FT) EAST OF THE EAST CORNER OF A HOUSE,
 HU1811'8.8 M (28.87 FT) NORTHWEST OF THE CENTER OF SPRING HILL LANE, 1.8 M
 HU1811'(5.91 FT) NORTHEAST OF UTILITY POLE NUMBER 45058 96562, 0.2 M (0.66
 HU1811'FT) BELOW THE LEVEL OF SPRING HILL LANE, AND IN A CONCRETE MONUMENT
 HU1811'THAT IS 0.1 M (0.33 FT) BELOW THE GROUND SURFACE.
 HU1811
 HU1811                          STATION RECOVERY (2018)
 HU1811
 HU1811'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2018 (JRO)
 HU1811'THE STATION WAS RECOVERED AS DESCRIBED.  REFERENCE MARK 1 WAS SEARCHED
 HU1811'FOR BUT NOT FOUND.  REFERENCE MARKS 2 AND 3 WERE NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1830 ***********************************************************************
 HU1830  DESIGNATION -  BRADLEY AZ MK 2
 HU1830  PID         -  HU1830
 HU1830  STATE/COUNTY-  MD/WICOMICO
 HU1830  COUNTRY     -  US
 HU1830  USGS QUAD   -  HEBRON (2016)
 HU1830
 HU1830                         *CURRENT SURVEY CONTROL
 HU1830  ______________________________________________________________________
 HU1830* NAD 83(1991) POSITION- 38 27 16.62002(N) 075 39 50.76185(W)   NO CHECK
 HU1830* NAVD 88 ORTHO HEIGHT -    14.028 (meters)       46.02  (feet) ADJUSTED
 HU1830  ______________________________________________________________________
 HU1830  GEOID HEIGHT    -        -35.672 (meters)                     GEOID18
 HU1830  LAPLACE CORR    -         -1.52  (seconds)                    DEFLEC18
 HU1830  DYNAMIC HEIGHT  -         14.019 (meters)       45.99  (feet) COMP
 HU1830  MODELED GRAVITY -    980,013.1   (mgal)                       NAVD 88
 HU1830
 HU1830  HORZ ORDER      -  THIRD
 HU1830  VERT ORDER      -  SECOND    CLASS I
 HU1830
 HU1830.The horizontal coordinates were established by classical geodetic methods
 HU1830.and adjusted by the National Geodetic Survey in January 1992.
 HU1830
 HU1830.No horizontal observational check was made to the station.
 HU1830
 HU1830.The orthometric height was determined by differential leveling and
 HU1830.adjusted by the NATIONAL GEODETIC SURVEY
 HU1830.in June 1991.
 HU1830
 HU1830.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1830.GEOID18 height accuracy estimate available here.
 HU1830
 HU1830.Click photographs - Photos may exist for this station.
 HU1830
 HU1830.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1830
 HU1830.The dynamic height is computed by dividing the NAVD 88
 HU1830.geopotential number by the normal gravity value computed on the
 HU1830.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1830.degrees latitude (g = 980.6199 gals.).
 HU1830
 HU1830.The modeled gravity was interpolated from observed gravity values.
 HU1830
 HU1830. The following values were computed from the NAD 83(1991) position.
 HU1830
 HU1830;                    North         East     Units Scale Factor Converg.
 HU1830;SPC MD       -    88,318.826   516,600.413   MT  0.99997670   +0 50 18.4
 HU1830;SPC MD       -   289,759.35  1,694,879.85   sFT  0.99997670   +0 50 18.4
 HU1830;UTM  18      - 4,256,466.486   442,055.233   MT  0.99964135   -0 24 46.8
 HU1830
 HU1830!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1830!SPC MD       -   1.00000340  x   0.99997670  =   0.99998010
 HU1830!UTM  18      -   1.00000340  x   0.99964135  =   0.99964474
 HU1830
 HU1830_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4205556466(NAD 83)
 HU1830
 HU1830                          SUPERSEDED SURVEY CONTROL
 HU1830
 HU1830  NAD 83(1986)-  38 27 16.61518(N)    075 39 50.78484(W) AD(       ) 3
 HU1830  NAD 27      -  38 27 16.19965(N)    075 39 52.03450(W) AD(       ) 3
 HU1830  NGVD 29 (06/12/91)   14.275  (m)           46.83   (f) ADJUSTED    2 1
 HU1830  NGVD 29 (07/19/86)   14.1    (m)           46.     (f) VERT ANG       
 HU1830
 HU1830.Superseded values are not recommended for survey control.
 HU1830
 HU1830.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1830.See file dsdata.pdf to determine how the superseded data were derived.
 HU1830
 HU1830_MARKER: DZ = AZIMUTH MARK DISK
 HU1830_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1830_STAMPING: BRADLEY NO 2 1981
 HU1830_MARK LOGO: NGS
 HU1830_PROJECTION: PROJECTING 10 CENTIMETERS
 HU1830_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1830_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1830+STABILITY: SURFACE MOTION
 HU1830_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU1830+SATELLITE: SATELLITE OBSERVATIONS - September 06, 2018
 HU1830
 HU1830  HISTORY     - Date     Condition        Report By
 HU1830  HISTORY     - 1981     MONUMENTED       NGS
 HU1830  HISTORY     - 19900110 GOOD             NGS
 HU1830  HISTORY     - 20180906 GOOD             ARCSHE
 HU1830
 HU1830                          STATION DESCRIPTION
 HU1830
 HU1830'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU1830'1.8 KM (1.12 MI) NORTHWESTERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU1830'OFFICE IN HEBRON, THENCE 0.7 KM (0.43 MI) EASTERLY ALONG MEMORY
 HU1830'GARDENS LANE, THENCE 2.8 KM (1.74 MI) NORTHERLY ALONG SPRING HILL
 HU1830'LANE, 13.1 M (42.98 FT) EAST OF THE CENTER OF THE LANE, 4.6 M (15.09
 HU1830'FT) SOUTH OF THE CENTER OF WALLER ROAD, 0.6 M (1.97 FT) WEST OF
 HU1830'UTILITY POLE NUMBER 45022 96401, 0.3 M (0.98 FT) EAST OF A WITNESS
 HU1830'POST, LEVEL WITH THE ROAD, AND IN A CONCRETE MONUMENT THAT PROJECTS
 HU1830'0.2 M (0.66 FT) ABOVE THE GROUND SURFACE.
 HU1830'THE STATION IS LOCATED 2-1/2 MILES NORTHWEST OF HEBRON AND 4-1/2 MILES
 HU1830'WEST OF DELMAR AND ON ROAD RIGHT-OF-WAY.
 HU1830'TO REACH FROM A POINT WHERE STATE HIGHWAY 54 CROSSES A RAILROAD IN
 HU1830'DELMAR, GO WEST ON STATE HIGHWAY 54 FOR 0.2 MILE (0.3 KM) TO A FORK.
 HU1830'KEEP LEFT AND GO WEST ON WALLER ROAD FOR 0.35 MILE (0.56 KM) TO A
 HU1830'FORK.  KEEP LEFT AND FOLLOW WALLER ROAD SOUTHWEST AND WEST FOR 4.5
 HU1830'MILES (7.2 KM) TO A T-INTERSECTION WITH SPRING HILL LANE AND THE MARK
 HU1830'ON THE LEFT.
 HU1830'THE MARK IS A STANDARD AZIMUTH MARK DISK STAMPED BRADLEY NO 2 1981,
 HU1830'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS 9
 HU1830'INCHES.  IT IS 43.5 FEET (13.3 M) EAST OF THE CENTER OF SPRING HILL
 HU1830'LANE, 15.3 FEET (4.7 M) SOUTH OF THE CENTER OF WALLER ROAD, 12.8 FEET
 HU1830'(3.9 M) EAST-NORTHEAST OF A TELEPHONE UNDERGROUND CABLE MARKER POST
 HU1830'NUMBERED 1, 2.1 FEET (0.6 M) WEST OF A POWERLINE POLE NUMBERED 45022
 HU1830'96401 114, AND 1.1 FEET (0.3 M) NORTHEAST OF A WITNESS POST.
 HU1830'FOR ADDITIONAL INFORMATION, SEE DESCRIPTION FOR STATION BRADLEY 1974.
 HU1830
 HU1830                          STATION RECOVERY (2018)
 HU1830
 HU1830'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 HU1830'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0418 ***********************************************************************
 JV0418  DESIGNATION -  BRADSHAW
 JV0418  PID         -  JV0418
 JV0418  STATE/COUNTY-  MD/BALTIMORE
 JV0418  COUNTRY     -  US
 JV0418  USGS QUAD   -  WHITE MARSH (2016)
 JV0418
 JV0418                         *CURRENT SURVEY CONTROL
 JV0418  ______________________________________________________________________
 JV0418* NAD 83(1991) POSITION- 39 26 03.00200(N) 076 23 02.37060(W)   ADJUSTED
 JV0418* NAVD 88 ORTHO HEIGHT -    47.806 (meters)      156.84  (feet) ADJUSTED
 JV0418  ______________________________________________________________________
 JV0418  GEOID HEIGHT    -        -32.955 (meters)                     GEOID18
 JV0418  LAPLACE CORR    -         -4.27  (seconds)                    DEFLEC18
 JV0418  DYNAMIC HEIGHT  -         47.781 (meters)      156.76  (feet) COMP
 JV0418  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV0418
 JV0418  HORZ ORDER      -  SECOND
 JV0418  VERT ORDER      -  FIRST     CLASS II
 JV0418
 JV0418.The horizontal coordinates were established by classical geodetic methods
 JV0418.and adjusted by the National Geodetic Survey in January 1992.
 JV0418
 JV0418.The orthometric height was determined by differential leveling and
 JV0418.adjusted by the NATIONAL GEODETIC SURVEY
 JV0418.in June 1991.
 JV0418
 JV0418.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0418.GEOID18 height accuracy estimate available here.
 JV0418
 JV0418.Click photographs - Photos may exist for this station.
 JV0418
 JV0418.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0418
 JV0418.The dynamic height is computed by dividing the NAVD 88
 JV0418.geopotential number by the normal gravity value computed on the
 JV0418.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0418.degrees latitude (g = 980.6199 gals.).
 JV0418
 JV0418.The modeled gravity was interpolated from observed gravity values.
 JV0418
 JV0418. The following values were computed from the NAD 83(1991) position.
 JV0418
 JV0418;                    North         East     Units Scale Factor Converg.
 JV0418;SPC MD       -   196,384.779   453,034.371   MT  0.99999727   +0 23 11.9
 JV0418;SPC MD       -   644,305.73  1,486,330.27   sFT  0.99999727   +0 23 11.9
 JV0418;UTM  18      - 4,365,872.237   380,891.307   MT  0.99977467   -0 52 45.1
 JV0418
 JV0418!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0418!SPC MD       -   0.99999767  x   0.99999727  =   0.99999494
 JV0418!UTM  18      -   0.99999767  x   0.99977467  =   0.99977234
 JV0418
 JV0418:                Primary Azimuth Mark                     Grid Az
 JV0418:SPC MD       -  UPPER                                    231 24 04.6
 JV0418:UTM  18      -  UPPER                                    232 40 01.6
 JV0418
 JV0418_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8089165872(NAD 83)
 JV0418
 JV0418|---------------------------------------------------------------------|
 JV0418| PID    Reference Object                     Distance      Geod. Az  |
 JV0418|                                                           dddmmss.s |
 JV0418| JV0419 BRADSHAW RM 1                        19.942 METERS 18138     |
 JV0418| JV5424 UPPER                               APPROX. 2.7 KM 2314716.5 |
 JV0418| JV0417 BRADSHAW RM 2                        17.848 METERS 29817     |
 JV0418|---------------------------------------------------------------------|
 JV0418
 JV0418                          SUPERSEDED SURVEY CONTROL
 JV0418
 JV0418  NAD 83(1986)-  39 26 02.99636(N)    076 23 02.37896(W) AD(       ) 2
 JV0418  NAD 27      -  39 26 02.60860(N)    076 23 03.52160(W) AD(       ) 2
 JV0418  NGVD 29              48.05   (m)          157.6    (f) LEVELING    3  
 JV0418  NGVD 29 (11/26/84)   48.053  (m)          157.65   (f) ADJUSTED    1 2
 JV0418
 JV0418.Superseded values are not recommended for survey control.
 JV0418
 JV0418.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0418.See file dsdata.pdf to determine how the superseded data were derived.
 JV0418
 JV0418_MARKER: DS = TRIANGULATION STATION DISK
 JV0418_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0418_STAMPING: BRADSHAW 1958
 JV0418_MARK LOGO: CGS
 JV0418_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0418+STABILITY: SURFACE MOTION
 JV0418
 JV0418  HISTORY     - Date     Condition        Report By
 JV0418  HISTORY     - 1958     MONUMENTED       CGS
 JV0418  HISTORY     - 1959     GOOD             CGS
 JV0418
 JV0418                          STATION DESCRIPTION
 JV0418
 JV0418'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0418'STATION IS LOCATED ABOUT 0.3 MILE WEST OF LITTLE GUNPOWDER RIVER,
 JV0418'5.0 MILES NORTHWEST OF EDGEWOOD AND 2.0 MILES NORTHEAST OF
 JV0418'GUNPOWDER RIVER.  IT IS 28 FEET SOUTH-SOUTHWEST OF THE CENTERLINE
 JV0418'OF REYNOLDS ROAD, AND 24 FEET EAST-NORTHEAST OF THE CENTER OF
 JV0418'DRIVEWAY.  THE MARK IS A 10 BY 10 INCH CONCRETE MONUMENT.  SET
 JV0418'FLUSH.  THE DISK IS A STANDARD TRIANGULATION STATION DISK STAMPED
 JV0418'BRADSHAW 1958.
 JV0418'
 JV0418'REFERENCE MARK NO. 2 IS 10-1/2 FEET SOUTH-SOUTHWEST OF CENTER OF
 JV0418'DRIVEWAY, 4-1/2 FEET SOUTH-SOUTHWEST OF CUT EMBANKMENT, AND 9 FEET
 JV0418'EAST OF SMALL APPLE TREE.  THE MARK IS A 10 BY 10 INCH CONCRETE
 JV0418'MONUMENT.  SET FLUSH.  THE DISK IS A STANDARD TRIANGULATION
 JV0418'REFERENCE MARK DISK STAMPED BRADSHAW NO 2 1958.
 JV0418'
 JV0418'REFERENCE MARK NO. 1 IS 16 FEET EAST-NORTHEAST OF THE CENTERLINE
 JV0418'OF REYNOLDS ROAD, AND 10 FEET NORTH OF WILD CHERRY TREE.  THE
 JV0418'MARK IS A 10 BY 10 INCH CONCRETE MONUMENT.  SET FLUSH.  THE DISK
 JV0418'IS A STANDARD TRIANGULATION REFERENCE MARK STAMPED BRADSHAW NO 1 1958.
 JV0418'
 JV0418'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JV0418'HIGHWAY NO. 152 GO NORTHWEST ON STATE HIGHWAY NO. 152 FOR 0.7
 JV0418'MILE TO STATE HIGHWAY NO. 7 (OLD PHILADELPHIA ROAD) TURN LEFT ON
 JV0418'STATE HIGHWAY NO. 7 AND GO WESTERLY FOR 2.20 MILES TO CROSSROADS,
 JV0418'TURN RIGHT AND GO NORTH ON BRADSHAW ROAD FOR 0.2 MILE TO A SIDE
 JV0418'ROAD RIGHT, TURN RIGHT ON REYNOLDS ROAD AND GO NORTHEAST FOR 0.70
 JV0418'MILE TO TOP OF HILL, AND STATION ON RIGHT AS DESCRIBED.
 JV0418'
 JV0418'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV0418
 JV0418                          STATION RECOVERY (1959)
 JV0418
 JV0418'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV0418'0.8 MI NE FROM BRADSHAW.
 JV0418'ABOUT 0.2 MILE NORTH ALONG BRADSHAW ROAD FROM THE INTERSECTION
 JV0418'OF STATE HIGHWAY 7 AT BRADSHAW, THENCE 0.65 MILES NORTHEAST
 JV0418'ALONG REYNOLDS ROAD, AT A FARM ROAD CROSSING, 28 FEET SOUTHWEST
 JV0418'OF THE CENTER LINE OF THE REYNOLDS ROAD, 24 FEET NORTHEAST OF
 JV0418'THE CENTER LINE OF A DRIVEWAY, SET IN THE TOP OF A CONCRETE POST
 JV0418'FLUSH WITH THE GROUND AND ABOUT 5 FEET ABOVE THE LEVEL OF THE
 JV0418'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0419 ***********************************************************************
 JV0419  DESIGNATION -  BRADSHAW RM 1
 JV0419  PID         -  JV0419
 JV0419  STATE/COUNTY-  MD/BALTIMORE
 JV0419  COUNTRY     -  US
 JV0419  USGS QUAD   -  WHITE MARSH (2016)
 JV0419
 JV0419                         *CURRENT SURVEY CONTROL
 JV0419  ______________________________________________________________________
 JV0419* NAD 83(1986) POSITION- 39 26 02.36   (N) 076 23 02.39   (W)   HD_HELD1
 JV0419* NAVD 88 ORTHO HEIGHT -    48.081 (meters)      157.75  (feet) ADJUSTED
 JV0419  ______________________________________________________________________
 JV0419  GEOID HEIGHT    -        -32.955 (meters)                     GEOID18
 JV0419  DYNAMIC HEIGHT  -         48.055 (meters)      157.66  (feet) COMP
 JV0419  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV0419
 JV0419  VERT ORDER      -  FIRST     CLASS II
 JV0419
 JV0419.The horizontal coordinates were determined by differentially corrected
 JV0419.hand held GPS observations or other comparable positioning techniques
 JV0419.and have an estimated accuracy of +/- 3 meters.
 JV0419
 JV0419.The orthometric height was determined by differential leveling and
 JV0419.adjusted by the NATIONAL GEODETIC SURVEY
 JV0419.in June 1991.
 JV0419
 JV0419.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0419.GEOID18 height accuracy estimate available here.
 JV0419
 JV0419.Click photographs - Photos may exist for this station.
 JV0419
 JV0419.The dynamic height is computed by dividing the NAVD 88
 JV0419.geopotential number by the normal gravity value computed on the
 JV0419.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0419.degrees latitude (g = 980.6199 gals.).
 JV0419
 JV0419.The modeled gravity was interpolated from observed gravity values.
 JV0419
 JV0419;                    North         East    Units  Estimated Accuracy
 JV0419;SPC MD       -   196,365.0     453,034.0     MT  (+/- 3 meters HH1 GPS) 
 JV0419
 JV0419_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8089065852(NAD 83)
 JV0419
 JV0419                          SUPERSEDED SURVEY CONTROL
 JV0419
 JV0419  NGVD 29 (11/26/84)   48.328  (m)          158.56   (f) ADJUSTED    1 2
 JV0419
 JV0419.Superseded values are not recommended for survey control.
 JV0419
 JV0419.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0419.See file dsdata.pdf to determine how the superseded data were derived.
 JV0419
 JV0419_MARKER: DR = REFERENCE MARK DISK
 JV0419_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0419_STAMPING: BRADSHAW NO 1 1958
 JV0419_MARK LOGO: CGS
 JV0419_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0419+STABILITY: SURFACE MOTION
 JV0419
 JV0419  HISTORY     - Date     Condition        Report By
 JV0419  HISTORY     - 1958     MONUMENTED       CGS
 JV0419  HISTORY     - 1959     GOOD             CGS
 JV0419
 JV0419                          STATION DESCRIPTION
 JV0419
 JV0419'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0419'0.8 MI NE FROM BRADSHAW.
 JV0419'ABOUT 0.2 MILE NORTH ALONG BRADSHAW ROAD FROM THE INTERSECTION
 JV0419'OF STATE HIGHWAY 7 AT BRADSHAW, THENCE 0.65 MILES NORTHEAST ALONG
 JV0419'REYNOLDS ROAD, 65.4 FEET SOUTH OF THE STATION, 16 FEET NORTHEAST
 JV0419'OF THE CENTER LINE OF THE ROAD, 10 FEET NORTH OF A WILD CHERRY
 JV0419'TREE, SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE
 JV0419'THE GROUND AND ABOUT 3 FEET ABOVE THE LEVEL OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0417 ***********************************************************************
 JV0417  DESIGNATION -  BRADSHAW RM 2
 JV0417  PID         -  JV0417
 JV0417  STATE/COUNTY-  MD/BALTIMORE
 JV0417  COUNTRY     -  US
 JV0417  USGS QUAD   -  WHITE MARSH (2016)
 JV0417
 JV0417                         *CURRENT SURVEY CONTROL
 JV0417  ______________________________________________________________________
 JV0417* NAD 83(1986) POSITION- 39 26 03.28   (N) 076 23 03.03   (W)   HD_HELD1
 JV0417* NAVD 88 ORTHO HEIGHT -    48.326 (meters)      158.55  (feet) ADJUSTED
 JV0417  ______________________________________________________________________
 JV0417  GEOID HEIGHT    -        -32.954 (meters)                     GEOID18
 JV0417  DYNAMIC HEIGHT  -         48.301 (meters)      158.47  (feet) COMP
 JV0417  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV0417
 JV0417  VERT ORDER      -  FIRST     CLASS II
 JV0417
 JV0417.The horizontal coordinates were determined by differentially corrected
 JV0417.hand held GPS observations or other comparable positioning techniques
 JV0417.and have an estimated accuracy of +/- 3 meters.
 JV0417
 JV0417.The orthometric height was determined by differential leveling and
 JV0417.adjusted by the NATIONAL GEODETIC SURVEY
 JV0417.in June 1991.
 JV0417
 JV0417.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0417.GEOID18 height accuracy estimate available here.
 JV0417
 JV0417.Click photographs - Photos may exist for this station.
 JV0417
 JV0417.The dynamic height is computed by dividing the NAVD 88
 JV0417.geopotential number by the normal gravity value computed on the
 JV0417.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0417.degrees latitude (g = 980.6199 gals.).
 JV0417
 JV0417.The modeled gravity was interpolated from observed gravity values.
 JV0417
 JV0417;                    North         East    Units  Estimated Accuracy
 JV0417;SPC MD       -   196,393.2     453,018.5     MT  (+/- 3 meters HH1 GPS) 
 JV0417
 JV0417_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8087565881(NAD 83)
 JV0417
 JV0417                          SUPERSEDED SURVEY CONTROL
 JV0417
 JV0417  NGVD 29 (11/26/84)   48.573  (m)          159.36   (f) ADJUSTED    1 2
 JV0417
 JV0417.Superseded values are not recommended for survey control.
 JV0417
 JV0417.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0417.See file dsdata.pdf to determine how the superseded data were derived.
 JV0417
 JV0417_MARKER: DR = REFERENCE MARK DISK
 JV0417_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0417_STAMPING: BRADSHAW NO 2 1958
 JV0417_MARK LOGO: CGS
 JV0417_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0417+STABILITY: SURFACE MOTION
 JV0417
 JV0417  HISTORY     - Date     Condition        Report By
 JV0417  HISTORY     - 1958     MONUMENTED       CGS
 JV0417  HISTORY     - 1959     GOOD             CGS
 JV0417
 JV0417                          STATION DESCRIPTION
 JV0417
 JV0417'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0417'0.8 MI NE FROM BRADSHAW.
 JV0417'ABOUT 0.2 MILE NORTH ALONG BRADSHAW ROAD FROM THE INTERSECTION
 JV0417'OF STATE HIGHWAY 7 AT BRADSHAW, THENCE 0.65 MILES NORTHEAST ALONG
 JV0417'REYNOLDS ROAD, 58.6 FEET NORTHWEST OF THE STATION, 10 FEET
 JV0417'SOUTH-SOUTHWEST OF THE CENTER LINE OF A DRIVEWAY, 9 FEET EAST
 JV0417'OF A SMALL APPLE TREE, SET IN THE TOP OF A CONCRETE POST FLUSH
 JV0417'WITH THE GROUND AND ABOUT 3 FEET ABOVE THE LEVEL OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4925 ***********************************************************************
 JV4925  DESIGNATION -  BRAMBLE
 JV4925  PID         -  JV4925
 JV4925  STATE/COUNTY-  MD/KENT
 JV4925  COUNTRY     -  US
 JV4925  USGS QUAD   -  HANESVILLE (2016)
 JV4925
 JV4925                         *CURRENT SURVEY CONTROL
 JV4925  ______________________________________________________________________
 JV4925* NAD 83(1991) POSITION- 39 15 19.60953(N) 076 13 23.14876(W)   ADJUSTED
 JV4925* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV4925  ______________________________________________________________________
 JV4925  GEOID HEIGHT    -        -33.230 (meters)                     GEOID18
 JV4925  LAPLACE CORR    -         -1.74  (seconds)                    DEFLEC18
 JV4925  HORZ ORDER      -  THIRD
 JV4925
 JV4925.The horizontal coordinates were established by classical geodetic methods
 JV4925.and adjusted by the National Geodetic Survey in January 1992.
 JV4925
 JV4925.The orthometric height was scaled from a topographic map.
 JV4925
 JV4925.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4925.GEOID18 height accuracy estimate available here.
 JV4925
 JV4925.Click photographs - Photos may exist for this station.
 JV4925
 JV4925.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4925
 JV4925. The following values were computed from the NAD 83(1991) position.
 JV4925
 JV4925;                    North         East     Units Scale Factor Converg.
 JV4925;SPC MD       -   176,649.622   467,054.958   MT  0.99997175   +0 29 15.4
 JV4925;SPC MD       -   579,557.97  1,532,329.47   sFT  0.99997175   +0 29 15.4
 JV4925;UTM  18      - 4,345,837.251   394,470.158   MT  0.99973712   -0 46 26.5
 JV4925
 JV4925!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4925!SPC MD       -   1.00000431  x   0.99997175  =   0.99997606
 JV4925!UTM  18      -   1.00000431  x   0.99973712  =   0.99974143
 JV4925
 JV4925:                Primary Azimuth Mark                     Grid Az
 JV4925:SPC MD       -  MITCHELLS BLUFF 2                        201 11 47.3
 JV4925:UTM  18      -  MITCHELLS BLUFF 2                        202 27 29.2
 JV4925
 JV4925_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9447045837(NAD 83)
 JV4925
 JV4925|---------------------------------------------------------------------|
 JV4925| PID    Reference Object                     Distance      Geod. Az  |
 JV4925|                                                           dddmmss.s |
 JV4925| JV4926 FAIRLEE TOWER 10                    215.104 METERS 19102     |
 JV4925| JV5134 MITCHELLS BLUFF 2                   APPROX. 3.7 KM 2014102.7 |
 JV4925|---------------------------------------------------------------------|
 JV4925
 JV4925                          SUPERSEDED SURVEY CONTROL
 JV4925
 JV4925  NAD 83(1986)-  39 15 19.60320(N)    076 13 23.15742(W) AD(       ) 3
 JV4925  NAD 27      -  39 15 19.21000(N)    076 13 24.32400(W) AD(       ) 3
 JV4925  USSD        -  39 15 19.57400(N)    076 13 24.16800(W) AD(       ) 3
 JV4925
 JV4925.Superseded values are not recommended for survey control.
 JV4925
 JV4925.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4925.See file dsdata.pdf to determine how the superseded data were derived.
 JV4925
 JV4925_MARKER: Z = SEE DESCRIPTION
 JV4925_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV4925_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4925
 JV4925  HISTORY     - Date     Condition        Report By
 JV4925  HISTORY     - 1897     MONUMENTED       CGS
 JV4925  HISTORY     - 1918     GOOD             CGS
 JV4925
 JV4925                          STATION DESCRIPTION
 JV4925
 JV4925'DESCRIBED BY COAST AND GEODETIC SURVEY 1918
 JV4925'ON EASTERN SHORE OF CHESAPEAKE BAY, ON THE FAIRLEE FARM, ABOUT
 JV4925'3 MILES NNE OF TOLCHESTER BEACH, 3 MILES SE OF POOLES ISLAND, AND
 JV4925'1-1/4 MILES SW OF ENTRANCE TO FAIRLEE CREEK.  STATION IS ON A
 JV4925'TREE AND BUSH-FRINGED BLUFF, ABOUT 30 FEET ABOVE HIGH WATER, 1
 JV4925'YARD E OF EDGE OF BLUFF, 3 YARDS W OF EDGE OF CULTIVATED FIELD,
 JV4925'35 YARDS SW OF TREES AT EDGE OF GULLY, AND 200 YARDS W OF OTHER
 JV4925'TREES.  IT IS ABOUT 211 METERS NEARLY N OF TOWER NO.10.  MARKED
 JV4925'BY A CEDAR STUB STANDING 1 METER FROM EDGE OF BANK IN 1918.
 JV4925'BELOW THE BASE OF THE STUB WAS BURIED A BOTTLE.  REFERENCE MARK
 JV4925'IS MARKED BY A HOLE IN THE CENTER OF THE TOPS OF A MARYLAND
 JV4925'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV4925'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 JV4925'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK
 JV4925'IN TOP OF POST.  IT IS 47.16 METERS (154.7 FEET) FROM
 JV4925'STATION N 67 DEG 05 MIN E.  DISTANCES AND
 JV4925'BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 JV4925'FOLLOWS--LEFT TREE ON POOLES ISLAND, 3 MILES N 63 DEG 23 MIN W.
 JV4925'WINDMILL ON MIDDLE OF LONG BUILDING ON POOLES ISLAND, 2-7/8
 JV4925'MILES, N 47 DEG 16 MIN W.  N PEAK OF HOUSE WITH SEVERAL
 JV4925'GABLES ON POOLES ISLAND, 2-7/8 MILES, N 45 DEG 55 MIN W.
 JV4925'CUPOLA ON BARN, 1 MILE, S 21 DEG 51 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5742 ***********************************************************************
 JV5742  DESIGNATION -  BRANDON SHORES PWR PLT STACK
 JV5742  PID         -  JV5742
 JV5742  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5742  COUNTRY     -  US
 JV5742  USGS QUAD   -  CURTIS BAY (2016)
 JV5742
 JV5742                         *CURRENT SURVEY CONTROL
 JV5742  ______________________________________________________________________
 JV5742* NAD 83(1991) POSITION- 39 10 48.09049(N) 076 32 20.00495(W)   NO CHECK
 JV5742* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5742  ______________________________________________________________________
 JV5742  GEOID HEIGHT    -        -33.004 (meters)                     GEOID18
 JV5742  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 JV5742  HORZ ORDER      -  THIRD
 JV5742
 JV5742.The horizontal coordinates were established by classical geodetic methods
 JV5742.and adjusted by the National Geodetic Survey in January 1992.
 JV5742
 JV5742.No horizontal observational check was made to the station.
 JV5742
 JV5742.The orthometric height was scaled from a topographic map.
 JV5742
 JV5742.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5742.GEOID18 height accuracy estimate available here.
 JV5742
 JV5742.Click photographs - Photos may exist for this station.
 JV5742
 JV5742.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5742
 JV5742. The following values were computed from the NAD 83(1991) position.
 JV5742
 JV5742;                    North         East     Units Scale Factor Converg.
 JV5742;SPC MD       -   168,091.861   439,841.252   MT  0.99996391   +0 17 21.9
 JV5742;SPC MD       -   551,481.38  1,443,045.84   sFT  0.99996391   +0 17 21.9
 JV5742;UTM  18      - 4,337,882.335   367,079.867   MT  0.99981754   -0 58 20.5
 JV5742
 JV5742!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5742!SPC MD       -   1.00000522  x   0.99996391  =   0.99996913
 JV5742!UTM  18      -   1.00000522  x   0.99981754  =   0.99982276
 JV5742
 JV5742_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6707937882(NAD 83)
 JV5742
 JV5742                          SUPERSEDED SURVEY CONTROL
 JV5742
 JV5742  NAD 83(1986)-  39 10 48.08894(N)    076 32 20.01973(W) AD(       ) 3
 JV5742  NAD 27      -  39 10 47.69975(N)    076 32 21.15409(W) AD(       ) 3
 JV5742
 JV5742.Superseded values are not recommended for survey control.
 JV5742
 JV5742.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5742.See file dsdata.pdf to determine how the superseded data were derived.
 JV5742
 JV5742_MARKER: 63 = STACK
 JV5742_MARK LOGO: NGS
 JV5742_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5742+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2003
 JV5742
 JV5742  HISTORY     - Date     Condition        Report By
 JV5742  HISTORY     - 1981     FIRST OBSERVED   NGS
 JV5742  HISTORY     - 1981     GOOD             NGS
 JV5742  HISTORY     - 20010331 GOOD             NGS
 JV5742  HISTORY     - 20030930 GOOD             USPSQD
 JV5742
 JV5742                          STATION DESCRIPTION
 JV5742
 JV5742'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981 (RGP)
 JV5742'THE STATION IS LOCATED ABOUT 9 AIRLINE MILES SOUTHEAST OF THE CENTER
 JV5742'OF BALTIMORE, 6 MILES NORTHEAST OF GLEN BURNIE AND JUST SOUTHWEST OF
 JV5742'THE PATAPSCO RIVER.
 JV5742'
 JV5742'TO REACH FROM THE INTERSECTION OF THE QUARANTINE ROAD EXIT AND
 JV5742'INTERSTATE HIGHWAY 695 WHICH IS JUST NORTH OF GLEN BURNIE, GO SOUTH
 JV5742'ON QUARANTINE ROAD FOR 0.15 MILE TO A T-INTERSECTION.  TURN LEFT AND
 JV5742'GO EAST ON HAWKINS POINT ROAD FOR 0.2 MILE TO A FORK.  KEEP LEFT
 JV5742'AND GO SOUTHEAST ON FORT SMALLWOOD ROAD FOR 2.0 MILES TO A SIDE
 JV5742'ROAD LEFT.  TURN LEFT AND GO NORTHEAST ON A PAVED ROAD FOR 0.25 MILE
 JV5742'TO THE STATION ON THE LEFT.
 JV5742'
 JV5742'THE STATION IS THE TOP AND CENTER OF THE BALTIMORE GAS AND ELECTRIC
 JV5742'COMPANY STACK.  IT IS 725 FEET IN HEIGHT AND PAINTED GREY IN COLOR
 JV5742'AND HAS WHITE STROBE LIGHTS UP THE ENTIRE SIDE OF IT ABOUT 100
 JV5742'FEET APART.
 JV5742
 JV5742                          STATION RECOVERY (1981)
 JV5742
 JV5742'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 JV5742'THE STATION IS LOCATED ABOUT 14.5 KM (9.00 MI) SOUTHEAST OF THE CENTER
 JV5742'OF BALTIMORE, 9.65 KM (6.00 MI) NORTHEAST OF GLEN BURNIE AND JUST
 JV5742'SOUTHWEST OF THE PATAPSCO RIVER.   OWNERSHIP--BALTIMORE GAS AND
 JV5742'ELECTRIC COMPANY.
 JV5742'TO REACH FROM THE INTERSECTION OF QUARANTINE ROAD AND INTERSTATE
 JV5742'HIGHWAY 695 WHICH IS JUST NORTH OF GLEN BURNIE, GO SOUTH ON QUARANTINE
 JV5742'ROAD FOR 0.25 KM (0.15 MI) TO A T-INTERSECTION.  TURN LEFT AND GO EAST
 JV5742'ON HAWKINS POINT ROAD FOR 0.32 KM (0.20 MI) TO A FORK.  KEEP RIGHT AND
 JV5742'GO SOUTHEAST ON FORT SMALLWOOD ROAD FOR 3.2 KM (2.00 MI) TO A SIDE
 JV5742'ROAD LEFT.  TURN LEFT AND GO NORTHEAST ON A PAVED ROAD FOR 0.25 KM
 JV5742'(0.15 MI) TO THE STATION ON THE LEFT.
 JV5742'THE STATION IS THE TOP AND CENTER OF THE BALTIMORE GAS AND ELECTRIC
 JV5742'COMPANY STACK.  IT IS 221 M (725 FT) IN HEIGHT AND PAINTED GREY IN
 JV5742'COLOR AND IT HAS WHITE STROBE LIGHTS UP THE ENTIRE SIDE OF IT AND THE
 JV5742'LIGHTS ARE ABOUT 30 M (98.4 FT) APART.
 JV5742
 JV5742                          STATION RECOVERY (2001)
 JV5742
 JV5742'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV5742'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV5742
 JV5742                          STATION RECOVERY (2003)
 JV5742
 JV5742'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5742'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7290 ***********************************************************************
 JV7290  DESIGNATION -  BRANDYWINE
 JV7290  PID         -  JV7290
 JV7290  STATE/COUNTY-  MD/HARFORD
 JV7290  COUNTRY     -  US
 JV7290  USGS QUAD   -  JARRETTSVILLE (2016)
 JV7290
 JV7290                         *CURRENT SURVEY CONTROL
 JV7290  ______________________________________________________________________
 JV7290* NAD 83(2011) POSITION- 39 32 05.52950(N) 076 27 10.98256(W)   ADJUSTED
 JV7290* NAD 83(2011) ELLIP HT-   105.388 (meters)        (06/27/12)   ADJUSTED
 JV7290* NAD 83(2011) EPOCH   -  2010.00
 JV7290* NAVD 88 ORTHO HEIGHT -   138.0   (meters)      453.    (feet) GPS OBS
 JV7290  ______________________________________________________________________
 JV7290  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7290  GEOID HEIGHT    -        -32.940 (meters)                     GEOID93
 JV7290  GEOID HEIGHT    -        -32.621 (meters)                     GEOID18
 JV7290  NAD 83(2011) X  -  1,153,835.128 (meters)                     COMP
 JV7290  NAD 83(2011) Y  - -4,788,778.994 (meters)                     COMP
 JV7290  NAD 83(2011) Z  -  4,038,357.105 (meters)                     COMP
 JV7290  LAPLACE CORR    -         -2.68  (seconds)                    DEFLEC18
 JV7290
 JV7290  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7290  Standards:
 JV7290         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7290            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7290  -------------------------------------------------------------------
 JV7290  NETWORK    1.75   4.39           0.73   0.70   2.24      0.11786845
 JV7290  -------------------------------------------------------------------
 JV7290  Click here for local accuracies and other accuracy information.
 JV7290
 JV7290.The horizontal coordinates were established by GPS observations
 JV7290.and adjusted by the National Geodetic Survey in June 2012.
 JV7290
 JV7290.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7290.been affixed to the stable North American tectonic plate. See 
 JV7290.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7290
 JV7290.The horizontal coordinates are valid at the epoch date displayed above
 JV7290.which is a decimal equivalence of Year/Month/Day.
 JV7290
 JV7290.The orthometric height was determined by GPS observations and a
 JV7290.high-resolution geoid model.
 JV7290
 JV7290.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7290.GEOID18 height accuracy estimate available here.
 JV7290
 JV7290.Click photographs - Photos may exist for this station.
 JV7290
 JV7290.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7290
 JV7290.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7290
 JV7290.The ellipsoidal height was determined by GPS observations
 JV7290.and is referenced to NAD 83.
 JV7290
 JV7290. The following values were computed from the NAD 83(2011) position.
 JV7290
 JV7290;                    North         East     Units Scale Factor Converg.
 JV7290;SPC MD       -   207,527.201   447,021.931   MT  1.00001595   +0 20 35.8
 JV7290;SPC MD       -   680,862.16  1,466,604.45   sFT  1.00001595   +0 20 35.8
 JV7290;UTM  18      - 4,377,142.372   375,128.012   MT  0.99979198   -0 55 30.2
 JV7290
 JV7290!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7290!SPC MD       -   0.99998347  x   1.00001595  =   0.99999942
 JV7290!UTM  18      -   0.99998347  x   0.99979198  =   0.99977545
 JV7290
 JV7290:                Primary Azimuth Mark                     Grid Az
 JV7290:SPC MD       -  BRANDYWINE AZ MK                         296 40 46.7
 JV7290:UTM  18      -  BRANDYWINE AZ MK                         297 56 52.7
 JV7290
 JV7290_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7512877142(NAD 83)
 JV7290
 JV7290|---------------------------------------------------------------------|
 JV7290| PID    Reference Object                     Distance      Geod. Az  |
 JV7290|                                                           dddmmss.s |
 JV7290| JV7291 BRANDYWINE AZ MK                    498.714 METERS 2970122.5 |
 JV7290|---------------------------------------------------------------------|
 JV7290
 JV7290                          SUPERSEDED SURVEY CONTROL
 JV7290
 JV7290  NAD 83(2007)-  39 32 05.52962(N)    076 27 10.98337(W) AD(2002.00) 0
 JV7290  ELLIP H (02/10/07)  105.406  (m)                       GP(2002.00)    
 JV7290  NAD 83(1991)-  39 32 05.52995(N)    076 27 10.98195(W) AD(       ) 1
 JV7290  ELLIP H (08/17/94)  105.393  (m)                       GP(       ) 4 1
 JV7290
 JV7290.Superseded values are not recommended for survey control.
 JV7290
 JV7290.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7290.See file dsdata.pdf to determine how the superseded data were derived.
 JV7290
 JV7290_MARKER: DD = SURVEY DISK
 JV7290_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7290_STAMPING: 138 BRANDYWINE 1993
 JV7290_MARK LOGO: MD-025
 JV7290_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7290_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7290+STABILITY: SURFACE MOTION
 JV7290_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7290+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7290
 JV7290  HISTORY     - Date     Condition        Report By
 JV7290  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7290  HISTORY     - 19991226 GOOD             USPSQD
 JV7290  HISTORY     - 20151014 MARK NOT FOUND   USPSQD
 JV7290
 JV7290                          STATION DESCRIPTION
 JV7290
 JV7290'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7290'THE STATION IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 4.0 MILES
 JV7290'WEST OF BEL AIR.
 JV7290'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 147 AND
 JV7290'STATE HIGHWAY 152 PROCEED NORTH NORTHWEST ALONG STATE HIGHWAY 152 4.1
 JV7290'MILES TO THE STATION ON THE LEFT.
 JV7290'THE STATION IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7290'CONCRETE FLUSH WITH THE GROUND STAMPED 138 BRANDYWINE 1993.
 JV7290'THE STATION IS 74.0 FEET SOUTHWEST FROM THE FACE OF CURB OF STATE
 JV7290'HIGHWAY 152, 19.5 FEET NORTH FROM A FENCE, AND 5.0 FEET SOUTHEAST
 JV7290'FROM POWER POLE WITH A METER.
 JV7290
 JV7290                          STATION RECOVERY (1999)
 JV7290
 JV7290'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV7290'RECOVERED IN GOOD CONDITION.
 JV7290
 JV7290                          STATION RECOVERY (2015)
 JV7290
 JV7290'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV7290'THE POWER POLE WITH A METER AS DESCRIBED WAS STILL THERE. NO MARKER
 JV7290'WAS FOUND 5.0 FEET NORTHEAST OF THE POLE USING A METAL DETECTOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7291 ***********************************************************************
 JV7291  DESIGNATION -  BRANDYWINE AZ MK
 JV7291  PID         -  JV7291
 JV7291  STATE/COUNTY-  MD/HARFORD
 JV7291  COUNTRY     -  US
 JV7291  USGS QUAD   -  JARRETTSVILLE (2016)
 JV7291
 JV7291                         *CURRENT SURVEY CONTROL
 JV7291  ______________________________________________________________________
 JV7291* NAD 83(2011) POSITION- 39 32 12.87622(N) 076 27 29.58671(W)   ADJUSTED
 JV7291* NAD 83(2011) ELLIP HT-   132.400 (meters)        (06/27/12)   ADJUSTED
 JV7291* NAD 83(2011) EPOCH   -  2010.00
 JV7291* NAVD 88 ORTHO HEIGHT -   165.0   (meters)      541.    (feet) GPS OBS
 JV7291  ______________________________________________________________________
 JV7291  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7291  GEOID HEIGHT    -        -32.930 (meters)                     GEOID93
 JV7291  GEOID HEIGHT    -        -32.611 (meters)                     GEOID18
 JV7291  NAD 83(2011) X  -  1,153,374.302 (meters)                     COMP
 JV7291  NAD 83(2011) Y  - -4,788,763.076 (meters)                     COMP
 JV7291  NAD 83(2011) Z  -  4,038,549.044 (meters)                     COMP
 JV7291  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 JV7291
 JV7291  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7291  Standards:
 JV7291         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7291            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7291  -------------------------------------------------------------------
 JV7291  NETWORK    1.59   4.23           0.67   0.62   2.16      0.24071503
 JV7291  -------------------------------------------------------------------
 JV7291  Click here for local accuracies and other accuracy information.
 JV7291
 JV7291.The horizontal coordinates were established by GPS observations
 JV7291.and adjusted by the National Geodetic Survey in June 2012.
 JV7291
 JV7291.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7291.been affixed to the stable North American tectonic plate. See 
 JV7291.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7291
 JV7291.The horizontal coordinates are valid at the epoch date displayed above
 JV7291.which is a decimal equivalence of Year/Month/Day.
 JV7291
 JV7291.The orthometric height was determined by GPS observations and a
 JV7291.high-resolution geoid model.
 JV7291
 JV7291.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7291.GEOID18 height accuracy estimate available here.
 JV7291
 JV7291.Click photographs - Photos may exist for this station.
 JV7291
 JV7291.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7291
 JV7291.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7291
 JV7291.The ellipsoidal height was determined by GPS observations
 JV7291.and is referenced to NAD 83.
 JV7291
 JV7291. The following values were computed from the NAD 83(2011) position.
 JV7291
 JV7291;                    North         East     Units Scale Factor Converg.
 JV7291;SPC MD       -   207,751.128   446,576.308   MT  1.00001636   +0 20 24.1
 JV7291;SPC MD       -   681,596.83  1,465,142.44   sFT  1.00001636   +0 20 24.1
 JV7291;UTM  18      - 4,377,376.055   374,687.553   MT  0.99979334   -0 55 42.2
 JV7291
 JV7291!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7291!SPC MD       -   0.99997923  x   1.00001636  =   0.99999559
 JV7291!UTM  18      -   0.99997923  x   0.99979334  =   0.99977257
 JV7291
 JV7291:                Primary Azimuth Mark                     Grid Az
 JV7291:SPC MD       -  BRANDYWINE                               116 40 46.6
 JV7291:UTM  18      -  BRANDYWINE                               117 56 52.9
 JV7291
 JV7291_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7468777376(NAD 83)
 JV7291
 JV7291|---------------------------------------------------------------------|
 JV7291| PID    Reference Object                     Distance      Geod. Az  |
 JV7291|                                                           dddmmss.s |
 JV7291| JV7290 BRANDYWINE                          498.714 METERS 1170110.7 |
 JV7291|---------------------------------------------------------------------|
 JV7291
 JV7291                          SUPERSEDED SURVEY CONTROL
 JV7291
 JV7291  NAD 83(2007)-  39 32 12.87634(N)    076 27 29.58752(W) AD(2002.00) 0
 JV7291  ELLIP H (02/10/07)  132.419  (m)                       GP(2002.00)    
 JV7291  NAD 83(1991)-  39 32 12.87667(N)    076 27 29.58616(W) AD(       ) 1
 JV7291  ELLIP H (08/17/94)  132.406  (m)                       GP(       ) 4 1
 JV7291
 JV7291.Superseded values are not recommended for survey control.
 JV7291
 JV7291.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7291.See file dsdata.pdf to determine how the superseded data were derived.
 JV7291
 JV7291_MARKER: DD = SURVEY DISK
 JV7291_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7291_STAMPING: 138 BRANDYWINE AZ MK 1993
 JV7291_MARK LOGO: MD-025
 JV7291_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7291_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7291+STABILITY: SURFACE MOTION
 JV7291_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7291+SATELLITE: SATELLITE OBSERVATIONS - February 11, 2002
 JV7291
 JV7291  HISTORY     - Date     Condition        Report By
 JV7291  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7291  HISTORY     - 19991226 MARK NOT FOUND   USPSQD
 JV7291  HISTORY     - 20020211 GOOD             MD-025
 JV7291
 JV7291                          STATION DESCRIPTION
 JV7291
 JV7291'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7291'THE AZIMUTH MARK IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 4.3
 JV7291'MILES WEST OF BEL AIR.
 JV7291'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE HIGHWAY 147
 JV7291'AND STATE HIGHWAY 152 PROCEED NORTH NORTHWEST ALONG STATE HIGHWAY 152
 JV7291'4.1 MILES PASSING THE STATION ON THE LEFT.  CONTINUE NORTHWEST ALONG
 JV7291'STATE HIGHWAY 152 0.3 MILES TO THE AZIMUTH MARK ON THE LEFT WHERE THE
 JV7291'POWER LINE MAKES A 45 DEGREE TURN.
 JV7291'THE AZIMUTH MARK IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7291'CONCRETE FLUSH WITH THE GROUND STAMPED 138 BRANDYWINE AZ MK 1993.
 JV7291'THE AZIMUTH MARK IS 82.6 FEET SOUTHWEST FROM THE FACE OF CURB OF STATE
 JV7291'HIGHWAY 152, 11.5 FEET NORTHEAST FROM C AND P POLE NUMBER 174, AND
 JV7291'11.2 FEET NORTHEAST FROM THE EDGE OF A CORN FIELD.
 JV7291
 JV7291                          STATION RECOVERY (1999)
 JV7291
 JV7291'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV7291'MARK NOT FOUND.
 JV7291
 JV7291                          STATION RECOVERY (2002)
 JV7291
 JV7291'RECOVERY NOTE BY HARFORD COUNTY MARYLAND 2002 (JLM)
 JV7291'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6480 ***********************************************************************
 HV6480  DESIGNATION -  BRASS
 HV6480  PID         -  HV6480
 HV6480  STATE/COUNTY-  MD/DORCHESTER
 HV6480  COUNTRY     -  US
 HV6480  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6480
 HV6480                         *CURRENT SURVEY CONTROL
 HV6480  ______________________________________________________________________
 HV6480* NAD 83(1991) POSITION- 38 09 05.84197(N) 076 05 21.10183(W)   ADJUSTED
 HV6480* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6480  ______________________________________________________________________
 HV6480  GEOID HEIGHT    -        -35.657 (meters)                     GEOID18
 HV6480  LAPLACE CORR    -         -1.84  (seconds)                    DEFLEC18
 HV6480  HORZ ORDER      -  THIRD
 HV6480
 HV6480.The horizontal coordinates were established by classical geodetic methods
 HV6480.and adjusted by the National Geodetic Survey in January 1992.
 HV6480
 HV6480.The orthometric height was scaled from a topographic map.
 HV6480
 HV6480.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6480.GEOID18 height accuracy estimate available here.
 HV6480
 HV6480.Click photographs - Photos may exist for this station.
 HV6480
 HV6480.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6480
 HV6480. The following values were computed from the NAD 83(1991) position.
 HV6480
 HV6480;                    North         East     Units Scale Factor Converg.
 HV6480;SPC MD       -    54,230.905   479,834.259   MT  1.00002912   +0 34 17.9
 HV6480;SPC MD       -   177,922.56  1,574,256.23   sFT  1.00002912   +0 34 17.9
 HV6480;UTM  18      - 4,223,198.486   404,567.444   MT  0.99971216   -0 40 22.4
 HV6480
 HV6480!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6480!SPC MD       -   1.00000548  x   1.00002912  =   1.00003460
 HV6480!UTM  18      -   1.00000548  x   0.99971216  =   0.99971764
 HV6480
 HV6480:                Primary Azimuth Mark                     Grid Az
 HV6480:SPC MD       -  HOLLAND ISLAND BAR LH                    183 02 09.2
 HV6480:UTM  18      -  HOLLAND ISLAND BAR LH                    184 16 49.5
 HV6480
 HV6480_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0456723198(NAD 83)
 HV6480
 HV6480|---------------------------------------------------------------------|
 HV6480| PID    Reference Object                     Distance      Geod. Az  |
 HV6480|                                                           dddmmss.s |
 HV6480| HV6500 HOLLAND ISLAND BAR LH               APPROX. 9.2 KM 1833627.1 |
 HV6480|---------------------------------------------------------------------|
 HV6480
 HV6480                          SUPERSEDED SURVEY CONTROL
 HV6480
 HV6480  NAD 83(1986)-  38 09 05.84249(N)    076 05 21.12046(W) AD(       ) 3
 HV6480  NAD 27      -  38 09 05.38300(N)    076 05 22.34500(W) AD(       ) 3
 HV6480
 HV6480.Superseded values are not recommended for survey control.
 HV6480
 HV6480.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6480.See file dsdata.pdf to determine how the superseded data were derived.
 HV6480
 HV6480_MARKER: 58 = CONTROL TOWER
 HV6480
 HV6480  HISTORY     - Date     Condition        Report By
 HV6480  HISTORY     - 1948     FIRST OBSERVED   CGS
 HV6480  HISTORY     - 1950     GOOD             CGS
 HV6480  HISTORY     - 1953     GOOD             CGS
 HV6480
 HV6480                          STATION DESCRIPTION
 HV6480
 HV6480'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (RHT)
 HV6480'THE STATION IS ON THE E SHORE OF CHESAPEAKE BAY, ON THE NE POINT
 HV6480'OF ADAM ISLAND, APPROXIMATELY 50 METERS NW OF A SMALL PIER, ON
 HV6480'THE SE EDGE OF A STAND OF TREES, THE CENTER OF A 14- BY 14-FOOT
 HV6480'FIRE CONTROL TOWER (HEIGHT 83.0 FEET) SUPPORTED BY CONCRETE
 HV6480'PIERS.  THE POINT OCCUPIED IS MARKED BY A TACK IN CENTER OF THE
 HV6480'ROOF OF HOUSE ATOP TOWER.
 HV6480
 HV6480                          STATION RECOVERY (1950)
 HV6480
 HV6480'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HV6480'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE STATION IS THE
 HV6480'CENTER OF THE TOP OF THE FIRE CONTROL OBSERVATION TOWER ERECTED
 HV6480'BY THE U.S. NAVY NEAR THE NE POINT OF ADAM ISLAND, A SMALL ISLAND
 HV6480'ABOUT 2 MILES W OF THE S END OF BLOODSWORTH ISLAND.
 HV6480
 HV6480                          STATION RECOVERY (1953)
 HV6480
 HV6480'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (JHB)
 HV6480'THE STATION AS DESCRIBED WAS RECOVERED IN GOOD CONDITION.  THE
 HV6480'POINT OCCUPIED IS MARKED BY A TACK IN THE CENTER OF THE TOP OF A
 HV6480'FIRE-CONTROL OBSERVATION TOWER ERECTED BY THE U.S. NAVY NEAR THE
 HV6480'NE POINT OF ADAM ISLAND, A SMALL ISLAND ABOUT 2 MI. W OF THE S
 HV6480'END OF BLOODWORTH ISLAND.  THIS IS AN UNMAINTAINED WOODEN HOUSE
 HV6480'ATOP A STEEL TOWER AND IS SUBJECT TO WEATHERING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5044 ***********************************************************************
 JV5044  DESIGNATION -  BREAK
 JV5044  PID         -  JV5044
 JV5044  STATE/COUNTY-  MD/QUEEN ANNES
 JV5044  COUNTRY     -  US
 JV5044  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5044
 JV5044                         *CURRENT SURVEY CONTROL
 JV5044  ______________________________________________________________________
 JV5044* NAD 83(1991) POSITION- 39 01 32.32015(N) 076 10 27.42527(W)   ADJUSTED
 JV5044* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5044  ______________________________________________________________________
 JV5044  GEOID HEIGHT    -        -33.680 (meters)                     GEOID18
 JV5044  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 JV5044  HORZ ORDER      -  THIRD
 JV5044
 JV5044.The horizontal coordinates were established by classical geodetic methods
 JV5044.and adjusted by the National Geodetic Survey in January 1992.
 JV5044
 JV5044.The orthometric height was scaled from a topographic map.
 JV5044
 JV5044.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5044.GEOID18 height accuracy estimate available here.
 JV5044
 JV5044.Click photographs - Photos may exist for this station.
 JV5044
 JV5044.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5044
 JV5044. The following values were computed from the NAD 83(1991) position.
 JV5044
 JV5044;                    North         East     Units Scale Factor Converg.
 JV5044;SPC MD       -   151,176.373   471,498.594   MT  0.99995326   +0 31 05.7
 JV5044;SPC MD       -   495,984.48  1,546,908.30   sFT  0.99995326   +0 31 05.7
 JV5044;UTM  18      - 4,320,278.328   398,351.845   MT  0.99972723   -0 44 22.1
 JV5044
 JV5044!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5044!SPC MD       -   1.00000532  x   0.99995326  =   0.99995858
 JV5044!UTM  18      -   1.00000532  x   0.99972723  =   0.99973255
 JV5044
 JV5044:                Primary Azimuth Mark                     Grid Az
 JV5044:SPC MD       -  BLAKEFORD                                156 07 27.6
 JV5044:UTM  18      -  BLAKEFORD                                157 22 55.4
 JV5044
 JV5044_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9835120278(NAD 83)
 JV5044
 JV5044|---------------------------------------------------------------------|
 JV5044| PID    Reference Object                     Distance      Geod. Az  |
 JV5044|                                                           dddmmss.s |
 JV5044| JV5025 BLAKEFORD                           APPROX. 2.5 KM 1563833.3 |
 JV5044|---------------------------------------------------------------------|
 JV5044
 JV5044                          SUPERSEDED SURVEY CONTROL
 JV5044
 JV5044  NAD 83(1986)-  39 01 32.31488(N)    076 10 27.43757(W) AD(       ) 3
 JV5044  NAD 27      -  39 01 31.91600(N)    076 10 28.57900(W) AD(       ) 3
 JV5044  USSD        -  39 01 32.27800(N)    076 10 28.41300(W) AD(       ) 3
 JV5044
 JV5044.Superseded values are not recommended for survey control.
 JV5044
 JV5044.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5044.See file dsdata.pdf to determine how the superseded data were derived.
 JV5044
 JV5044_MARKER: H = DRILL HOLE
 JV5044_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5044_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5044+STABILITY: SURFACE MOTION
 JV5044
 JV5044  HISTORY     - Date     Condition        Report By
 JV5044  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5044  HISTORY     - 1938     MARK NOT FOUND   CGS
 JV5044
 JV5044                          STATION DESCRIPTION
 JV5044
 JV5044'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5044'STATION IS ON THE EASTERN SHORE OF CHESTER RIVER, ON BREAK POINT,
 JV5044'ABOUT 1/8 MILE N OF N SIDE OF ENTRANCE TO TILGHMANS CREEK, IN A
 JV5044'CULTIVATED FIELD, ABOUT 5 FEET ABOVE HIGH WATER 13 YARDS INSHORE,
 JV5044'4 YARDS FROM EDGE OF BANK, 200 YARDS N OF EXTREME END OF POINT,
 JV5044'AND 300 YARDS W OF A HOUSE.
 JV5044'
 JV5044'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5044'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5044'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5044'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5044'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5044'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5044'
 JV5044'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5044'FOLLOWS--CHIMNEY OF HOUSE, 3-3/8 MILES, S 14 DEG 26 MIN W.  CHIMNEY OF
 JV5044'GREENS FISHING SHACK, 1-1/2 MILES, S 61 DEG 16 MIN W.  S CHIMNEY OF
 JV5044'HOUSE, 2-1/8 MILES, S 80 DEG 20 MIN W.  E GABLE OF HOUSE, 2-1/8 MILES,
 JV5044'N 71 DEG 59 MIN W. RIGHT TANGENT OF PILES OF BOGLE WHARF, 1-5/8
 JV5044'MILES, N 69 DEG 52 MIN W. E CHIMNEY OF HOUSE, 2-1/2 MILES, N 51 DEG
 JV5044'47 MIN W. WILLIAMS WATER TANK, 1/4 MILE, N 02 DEG 24 MIN W. KNOB
 JV5044'ON DOOR OF FISHING SHACK, 1/4 MILE, S 33 DEG 24 MIN E. N CHIMNEY
 JV5044'OF HOUSE AT QUEENSTOWN, 2-1/2 MILES, S 16 DEG 27 MIN E.
 JV5044
 JV5044                          STATION RECOVERY (1938)
 JV5044
 JV5044'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5044'NO EVIDENCE OF THE STATION COULD BE FOUND.  THE POINT HAS
 JV5044'EVIDENTLY CHANGED BY EROSION.  THE ORIGINAL DESCRIPTION IS ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6950 ***********************************************************************
 JV6950  DESIGNATION -  BRENDLE
 JV6950  PID         -  JV6950
 JV6950  STATE/COUNTY-  MD/CECIL
 JV6950  COUNTRY     -  US
 JV6950  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV6950
 JV6950                         *CURRENT SURVEY CONTROL
 JV6950  ______________________________________________________________________
 JV6950* NAD 83(2011) POSITION- 39 35 43.54429(N) 076 04 01.83780(W)   ADJUSTED
 JV6950* NAD 83(2011) ELLIP HT-    87.931 (meters)        (06/27/12)   ADJUSTED
 JV6950* NAD 83(2011) EPOCH   -  2010.00
 JV6950* NAVD 88 ORTHO HEIGHT -   120.998 (meters)      396.97  (feet) ADJUSTED
 JV6950  ______________________________________________________________________
 JV6950  GEOID HEIGHT    -        -33.077 (meters)                     GEOID18
 JV6950  NAD 83(2011) X  -  1,185,025.549 (meters)                     COMP
 JV6950  NAD 83(2011) Y  - -4,776,729.817 (meters)                     COMP
 JV6950  NAD 83(2011) Z  -  4,043,529.381 (meters)                     COMP
 JV6950  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 JV6950  DYNAMIC HEIGHT  -        120.938 (meters)      396.78  (feet) COMP
 JV6950  MODELED GRAVITY -    980,127.5   (mgal)                       NAVD 88
 JV6950
 JV6950  VERT ORDER      -  SECOND    CLASS I
 JV6950
 JV6950  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6950  Standards:
 JV6950         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6950            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6950  -------------------------------------------------------------------
 JV6950  NETWORK    1.37   1.98           0.64   0.43   1.01     -0.14866946
 JV6950  -------------------------------------------------------------------
 JV6950  Click here for local accuracies and other accuracy information.
 JV6950
 JV6950.The horizontal coordinates were established by GPS observations
 JV6950.and adjusted by the National Geodetic Survey in June 2012.
 JV6950
 JV6950.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6950.been affixed to the stable North American tectonic plate. See 
 JV6950.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6950
 JV6950.The horizontal coordinates are valid at the epoch date displayed above
 JV6950.which is a decimal equivalence of Year/Month/Day.
 JV6950
 JV6950.The orthometric height was determined by differential leveling and
 JV6950.adjusted by the NATIONAL GEODETIC SURVEY
 JV6950.in June 1995.
 JV6950
 JV6950.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6950.GEOID18 height accuracy estimate available here.
 JV6950
 JV6950.Click photographs - Photos may exist for this station.
 JV6950
 JV6950.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6950
 JV6950.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6950
 JV6950.The ellipsoidal height was determined by GPS observations
 JV6950.and is referenced to NAD 83.
 JV6950
 JV6950.The dynamic height is computed by dividing the NAVD 88
 JV6950.geopotential number by the normal gravity value computed on the
 JV6950.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6950.degrees latitude (g = 980.6199 gals.).
 JV6950
 JV6950.The modeled gravity was interpolated from observed gravity values.
 JV6950
 JV6950. The following values were computed from the NAD 83(2011) position.
 JV6950
 JV6950;                    North         East     Units Scale Factor Converg.
 JV6950;SPC MD       -   214,519.586   480,126.352   MT  1.00002868   +0 35 07.7
 JV6950;SPC MD       -   703,803.01  1,575,214.54   sFT  1.00002868   +0 35 07.7
 JV6950;UTM  18      - 4,383,399.285   408,369.755   MT  0.99970337   -0 40 48.8
 JV6950
 JV6950!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6950!SPC MD       -   0.99998621  x   1.00002868  =   1.00001488
 JV6950!UTM  18      -   0.99998621  x   0.99970337  =   0.99968958
 JV6950
 JV6950_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0836983399(NAD 83)
 JV6950
 JV6950                          SUPERSEDED SURVEY CONTROL
 JV6950
 JV6950  NAD 83(2007)-  39 35 43.54402(N)    076 04 01.83893(W) AD(2002.00) 0
 JV6950  ELLIP H (02/10/07)   87.962  (m)                       GP(2002.00)    
 JV6950  ELLIP H (08/30/02)   87.952  (m)                       GP(       ) 4 2
 JV6950  NAD 83(1991)-  39 35 43.54402(N)    076 04 01.83977(W) AD(       ) 1
 JV6950  ELLIP H (09/15/92)   87.953  (m)                       GP(       ) 4 1
 JV6950  NGVD 29 (09/15/92)  121.3    (m)  GEOID90  model used  GPS OBS        
 JV6950
 JV6950.Superseded values are not recommended for survey control.
 JV6950
 JV6950.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6950.See file dsdata.pdf to determine how the superseded data were derived.
 JV6950
 JV6950_MARKER: DD = SURVEY DISK
 JV6950_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6950_STAMPING: BRENDLE 1991
 JV6950_MARK LOGO: MDSHA
 JV6950_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6950_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6950+STABILITY: SURFACE MOTION
 JV6950_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6950+SATELLITE: SATELLITE OBSERVATIONS - 1991
 JV6950
 JV6950  HISTORY     - Date     Condition        Report By
 JV6950  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6950  HISTORY     - 20010606 MARK NOT FOUND   DMW
 JV6950
 JV6950                          STATION DESCRIPTION
 JV6950
 JV6950'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6950'THE MARKER IS LOCATED ABOUT 36.0 MI (57.9 KM) NORTHEAST OF BALTIMORE,
 JV6950'12.4 MI (20.0 KM) WEST-SOUTHWEST OF ELKTON AND ALONG STATE HIGHWAY
 JV6950'222.  TO REACH THE MARKER FROM THE INTERSECTION OF STATE HIGHWAY 222
 JV6950'AND STATE HIGHWAY 275, GO EAST FOR 0.3 MI (0.5 KM) ON STATE HIGHWAY
 JV6950'222 TO THE MARKER ON THE LEFT, A MARYLAND STATE HIGHWAY
 JV6950'ADMINISTRATION SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND
 JV6950'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT
 JV6950'IS 52.5 FT (16.0 M) EAST OF THE EAST EDGE OF THE MOST EASTERLY PAVED
 JV6950'SHOULDER ALONG STATE HIGHWAY 222, 4.0 FT (1.2 M) EAST OF A 4-FOOT
 JV6950'HIGH CHAIN LINK FENCE AND ABOUT 50 FT (15.2 M) NORTH OF A WOODS LINE.
 JV6950
 JV6950                          STATION RECOVERY (2001)
 JV6950
 JV6950'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (CCW)
 JV6950'RECENT CONSTRUCTION IN INTERCHANGE AREA
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4761 ***********************************************************************
 AB4761  DESIGNATION -  BRENT
 AB4761  PID         -  AB4761
 AB4761  STATE/COUNTY-  MD/CARROLL
 AB4761  COUNTRY     -  US
 AB4761  USGS QUAD   -  FINKSBURG (2016)
 AB4761
 AB4761                         *CURRENT SURVEY CONTROL
 AB4761  ______________________________________________________________________
 AB4761* NAD 83(2011) POSITION- 39 22 46.76266(N) 076 54 45.78172(W)   ADJUSTED
 AB4761* NAD 83(2011) ELLIP HT-   144.710 (meters)        (06/27/12)   ADJUSTED
 AB4761* NAD 83(2011) EPOCH   -  2010.00
 AB4761* NAVD 88 ORTHO HEIGHT -   176.7   (meters)      580.    (feet) GPS OBS
 AB4761  ______________________________________________________________________
 AB4761  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4761  GEOID HEIGHT    -        -31.997 (meters)                     GEOID99
 AB4761  GEOID HEIGHT    -        -32.003 (meters)                     GEOID18
 AB4761  NAD 83(2011) X  -  1,117,866.172 (meters)                     COMP
 AB4761  NAD 83(2011) Y  - -4,808,578.218 (meters)                     COMP
 AB4761  NAD 83(2011) Z  -  4,025,076.718 (meters)                     COMP
 AB4761  LAPLACE CORR    -         -2.42  (seconds)                    DEFLEC18
 AB4761
 AB4761  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4761  Standards:
 AB4761         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4761            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4761  -------------------------------------------------------------------
 AB4761  NETWORK    3.22   9.29           1.61   0.63   4.74     -0.04635063
 AB4761  -------------------------------------------------------------------
 AB4761  Click here for local accuracies and other accuracy information.
 AB4761
 AB4761.The horizontal coordinates were established by GPS observations
 AB4761.and adjusted by the National Geodetic Survey in June 2012.
 AB4761
 AB4761.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4761.been affixed to the stable North American tectonic plate. See 
 AB4761.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4761
 AB4761.The horizontal coordinates are valid at the epoch date displayed above
 AB4761.which is a decimal equivalence of Year/Month/Day.
 AB4761
 AB4761.The orthometric height was determined by GPS observations and a
 AB4761.high-resolution geoid model.
 AB4761
 AB4761.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4761.GEOID18 height accuracy estimate available here.
 AB4761
 AB4761.Click photographs - Photos may exist for this station.
 AB4761
 AB4761.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4761
 AB4761.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4761
 AB4761.The ellipsoidal height was determined by GPS observations
 AB4761.and is referenced to NAD 83.
 AB4761
 AB4761. The following values were computed from the NAD 83(2011) position.
 AB4761
 AB4761;                    North         East     Units Scale Factor Converg.
 AB4761;SPC MD       -   190,157.501   407,520.339   MT  0.99998845   +0 03 17.2
 AB4761;SPC MD       -   623,875.07  1,337,006.31   sFT  0.99998845   +0 03 17.2
 AB4761;UTM  18      - 4,360,653.826   335,257.195   MT  0.99993417   -1 12 49.7
 AB4761
 AB4761!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4761!SPC MD       -   0.99997730  x   0.99998845  =   0.99996575
 AB4761!UTM  18      -   0.99997730  x   0.99993417  =   0.99991147
 AB4761
 AB4761_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3525760653(NAD 83)
 AB4761
 AB4761|---------------------------------------------------------------------|
 AB4761| PID    Reference Object                     Distance      Geod. Az  |
 AB4761|                                                           dddmmss.s |
 AB4761| AB4740 BRENT AZ MK                         212.649 METERS 28756     |
 AB4761|---------------------------------------------------------------------|
 AB4761
 AB4761                          SUPERSEDED SURVEY CONTROL
 AB4761
 AB4761  NAD 83(2007)-  39 22 46.76287(N)    076 54 45.78239(W) AD(2002.00) 0
 AB4761  ELLIP H (02/10/07)  144.734  (m)                       GP(2002.00)    
 AB4761  ELLIP H (08/30/02)  144.731  (m)                       GP(       ) 4 2
 AB4761  NAD 83(1991)-  39 22 46.76255(N)    076 54 45.78257(W) AD(       ) 1
 AB4761  ELLIP H (07/03/96)  144.629  (m)                       GP(       ) 1 1
 AB4761  NAVD 88 (07/03/96)  176.7    (m)  GEOID93  model used  GPS OBS        
 AB4761
 AB4761.Superseded values are not recommended for survey control.
 AB4761
 AB4761.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4761.See file dsdata.pdf to determine how the superseded data were derived.
 AB4761
 AB4761_MARKER: DD = SURVEY DISK
 AB4761_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4761_STAMPING: BRENT 1994
 AB4761_MARK LOGO: MD-013
 AB4761_PROJECTION: FLUSH
 AB4761_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4761_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4761+STABILITY: SURFACE MOTION
 AB4761_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AB4761+SATELLITE: SATELLITE OBSERVATIONS - October 18, 2025
 AB4761
 AB4761  HISTORY     - Date     Condition        Report By
 AB4761  HISTORY     - 1994     MONUMENTED       MD-013
 AB4761  HISTORY     - 20251018 GOOD             BASE9
 AB4761
 AB4761                          STATION DESCRIPTION
 AB4761
 AB4761'DESCRIBED BY CARROLL COUNTY MARYLAND 1994
 AB4761'STATION IS LOCATED ABOUT 14 MI (22.5 KM) SOUTHEAST OF WESTMINSTER AND
 AB4761'ABOUT 3.0 MI (4.8 KM) NORTHEAST OF SYKESVILLE. TO REACH STATION FROM
 AB4761'THE INTERSECTION OF MD ROUTE 26 (LIBERTY ROAD) AND MD ROUTE 32
 AB4761'(SYKESVILLE ROAD), GO EAST ON MD ROUTE 26 FOR 1.0 MI (1.6 KM) TO THE
 AB4761'INTERSECTION WITH RIDGE ROAD. TURN RIGHT ON RIDGE ROAD AND GO SOUTH
 AB4761'FOR 1.9 MI (3.1 KM) TO THE INTERSECTION WITH BRENTWOOD DRIVE AND THE
 AB4761'STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4761'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 20.0 FT
 AB4761'(6.1 M) SOUTH OF THE CENTERLINE OF RIDGE ROAD, 151 FT (46.0 M) EAST OF
 AB4761'THE CENTERLINE OF BRENTWOOD DRIVE, 4.0 FT (1.2 M) SOUTH OF POWER POLE
 AB4761'NO.111616 AND 15 FT (4.6 M) NORTH OF A 6 IN PINE TREE.
 AB4761
 AB4761                          STATION RECOVERY (2025)
 AB4761
 AB4761'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2025 (DRD)
 AB4761'THE MARK IS STILL FLUSH, UTILITY POLE 1116161 STILL GOOD REFERENCE.
 AB4761'CONSIDERABLE TREE GROWTH ON THE NORTH SIDE COULD INHIBIT GNSS
 AB4761'SOLUTIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4740 ***********************************************************************
 AB4740  DESIGNATION -  BRENT AZ MK
 AB4740  PID         -  AB4740
 AB4740  STATE/COUNTY-  MD/CARROLL
 AB4740  COUNTRY     -  US
 AB4740  USGS QUAD   -  FINKSBURG (2016)
 AB4740
 AB4740                         *CURRENT SURVEY CONTROL
 AB4740  ______________________________________________________________________
 AB4740* NAD 83(2011) POSITION- 39 22 48.88610(N) 076 54 54.23484(W)   ADJUSTED
 AB4740* NAD 83(2011) ELLIP HT-   137.646 (meters)        (06/27/12)   ADJUSTED
 AB4740* NAD 83(2011) EPOCH   -  2010.00
 AB4740* NAVD 88 ORTHO HEIGHT -   169.6   (meters)      556.    (feet) GPS OBS
 AB4740  ______________________________________________________________________
 AB4740  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4740  GEOID HEIGHT    -        -31.994 (meters)                     GEOID99
 AB4740  GEOID HEIGHT    -        -32.000 (meters)                     GEOID18
 AB4740  NAD 83(2011) X  -  1,117,658.464 (meters)                     COMP
 AB4740  NAD 83(2011) Y  - -4,808,578.237 (meters)                     COMP
 AB4740  NAD 83(2011) Z  -  4,025,122.855 (meters)                     COMP
 AB4740  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 AB4740
 AB4740  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4740  Standards:
 AB4740         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4740            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4740  -------------------------------------------------------------------
 AB4740  NETWORK    2.72   7.84           1.34   0.63   4.00      0.01373288
 AB4740  -------------------------------------------------------------------
 AB4740  Click here for local accuracies and other accuracy information.
 AB4740
 AB4740.The horizontal coordinates were established by GPS observations
 AB4740.and adjusted by the National Geodetic Survey in June 2012.
 AB4740
 AB4740.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4740.been affixed to the stable North American tectonic plate. See 
 AB4740.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4740
 AB4740.The horizontal coordinates are valid at the epoch date displayed above
 AB4740.which is a decimal equivalence of Year/Month/Day.
 AB4740
 AB4740.The orthometric height was determined by GPS observations and a
 AB4740.high-resolution geoid model.
 AB4740
 AB4740.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4740.GEOID18 height accuracy estimate available here.
 AB4740
 AB4740.Click photographs - Photos may exist for this station.
 AB4740
 AB4740.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4740
 AB4740.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4740
 AB4740.The ellipsoidal height was determined by GPS observations
 AB4740.and is referenced to NAD 83.
 AB4740
 AB4740. The following values were computed from the NAD 83(2011) position.
 AB4740
 AB4740;                    North         East     Units Scale Factor Converg.
 AB4740;SPC MD       -   190,222.795   407,317.965   MT  0.99998854   +0 03 11.9
 AB4740;SPC MD       -   624,089.29  1,336,342.36   sFT  0.99998854   +0 03 11.9
 AB4740;UTM  18      - 4,360,723.581   335,056.327   MT  0.99993498   -1 12 55.1
 AB4740
 AB4740!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4740!SPC MD       -   0.99997841  x   0.99998854  =   0.99996695
 AB4740!UTM  18      -   0.99997841  x   0.99993498  =   0.99991339
 AB4740
 AB4740_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3505660723(NAD 83)
 AB4740
 AB4740|---------------------------------------------------------------------|
 AB4740| PID    Reference Object                     Distance      Geod. Az  |
 AB4740|                                                           dddmmss.s |
 AB4740| AB4761 BRENT                               212.649 METERS 10756     |
 AB4740|---------------------------------------------------------------------|
 AB4740
 AB4740                          SUPERSEDED SURVEY CONTROL
 AB4740
 AB4740  NAD 83(2007)-  39 22 48.88631(N)    076 54 54.23551(W) AD(2002.00) 0
 AB4740  ELLIP H (02/10/07)  137.669  (m)                       GP(2002.00)    
 AB4740  ELLIP H (08/30/02)  137.666  (m)                       GP(       ) 4 2
 AB4740  NAD 83(1991)-  39 22 48.88601(N)    076 54 54.23568(W) AD(       ) 1
 AB4740  ELLIP H (07/03/96)  137.564  (m)                       GP(       ) 1 1
 AB4740  NAVD 88 (07/03/96)  169.6    (m)  GEOID93  model used  GPS OBS        
 AB4740
 AB4740.Superseded values are not recommended for survey control.
 AB4740
 AB4740.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4740.See file dsdata.pdf to determine how the superseded data were derived.
 AB4740
 AB4740_MARKER: DD = SURVEY DISK
 AB4740_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4740_STAMPING: BRENT AZIMUTH 1995
 AB4740_MARK LOGO: MD-013
 AB4740_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4740_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4740+STABILITY: SURFACE MOTION
 AB4740_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4740+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4740
 AB4740  HISTORY     - Date     Condition        Report By
 AB4740  HISTORY     - 1995     MONUMENTED       MD-013
 AB4740
 AB4740                          STATION DESCRIPTION
 AB4740
 AB4740'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4740'STATION IS LOCATED ABOUT 14.0 MI (22.5 KM) SOUTHEAST OF WESTMINSTER
 AB4740'AND ABOUT 3.0 MI (4.8 KM) NORTHEAST OF SYKESVILLE. TO REACH STATION
 AB4740'FROM THE INTERSECTION OF MD ROUTE 26 (LIBERTY ROAD) AND MD ROUTE 32
 AB4740'(SYKESVILLE ROAD) GO EAST ON MD ROUTE 26 FOR 1.0 MI (1.6 KM) TO THE
 AB4740'INTERSECTION WITH RIDGE ROAD. TURN RIGHT ON RIDGE ROAD AND GO SOUTH
 AB4740'FOR 1.7 MI (2.7 KM) TO THE STATION ON THE RIGHT AT THE EDGE OF A
 AB4740'FIELD. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4740'MONUMENT SET FLUSH WITH THE GROUND. IT IS 19.0 FT (5.8 M) SOUTH OF THE
 AB4740'CENTERLINE OF THE ROAD, 45.5 FT (13.9 M) SOUTHWEST OF POWER POLE
 AB4740'NO.11612 AND 46 FT (14.0 M) EAST OF TELEPHONE POLE NO.40.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7124 ***********************************************************************
 HV7124  DESIGNATION -  BREW
 HV7124  PID         -  HV7124
 HV7124  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7124  COUNTRY     -  US
 HV7124  USGS QUAD   -  SOUTH RIVER (2016)
 HV7124
 HV7124                         *CURRENT SURVEY CONTROL
 HV7124  ______________________________________________________________________
 HV7124* NAD 83(1991) POSITION- 38 55 32.11228(N) 076 31 09.64444(W)   ADJUSTED
 HV7124* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV7124  ______________________________________________________________________
 HV7124  GEOID HEIGHT    -        -33.367 (meters)                     GEOID18
 HV7124  LAPLACE CORR    -         -4.02  (seconds)                    DEFLEC18
 HV7124  HORZ ORDER      -  THIRD
 HV7124
 HV7124.The horizontal coordinates were established by classical geodetic methods
 HV7124.and adjusted by the National Geodetic Survey in January 1992.
 HV7124
 HV7124.The orthometric height was scaled from a topographic map.
 HV7124
 HV7124.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7124.GEOID18 height accuracy estimate available here.
 HV7124
 HV7124.Click photographs - Photos may exist for this station.
 HV7124
 HV7124.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7124
 HV7124. The following values were computed from the NAD 83(1991) position.
 HV7124
 HV7124;                    North         East     Units Scale Factor Converg.
 HV7124;SPC MD       -   139,855.366   441,678.666   MT  0.99995022   +0 18 06.0
 HV7124;SPC MD       -   458,842.15  1,449,074.09   sFT  0.99995022   +0 18 06.0
 HV7124;UTM  18      - 4,309,616.237   368,296.215   MT  0.99981359   -0 57 17.1
 HV7124
 HV7124!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7124!SPC MD       -   1.00000480  x   0.99995022  =   0.99995502
 HV7124!UTM  18      -   1.00000480  x   0.99981359  =   0.99981839
 HV7124
 HV7124:                Primary Azimuth Mark                     Grid Az
 HV7124:SPC MD       -  GLEBE                                    314 01 12.8
 HV7124:UTM  18      -  GLEBE                                    315 16 35.9
 HV7124
 HV7124_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6829609616(NAD 83)
 HV7124
 HV7124|---------------------------------------------------------------------|
 HV7124| PID    Reference Object                     Distance      Geod. Az  |
 HV7124|                                                           dddmmss.s |
 HV7124| CX2117 BREW WM                              28.250 METERS 10901     |
 HV7124| CX2116 BREW RM 1                            29.585 METERS 12120     |
 HV7124| HV7162 GLEBE                               APPROX. 1.1 KM 3141918.8 |
 HV7124| HV7112 ABERDEEN CREEK BOATHSE N GABLE      APPROX. 1.9 KM 3475509.0 |
 HV7124|---------------------------------------------------------------------|
 HV7124
 HV7124                          SUPERSEDED SURVEY CONTROL
 HV7124
 HV7124  NAD 83(1986)-  38 55 32.10887(N)    076 31 09.65583(W) AD(       ) 3
 HV7124  NAD 27      -  38 55 31.69200(N)    076 31 10.79200(W) AD(       ) 3
 HV7124
 HV7124.Superseded values are not recommended for survey control.
 HV7124
 HV7124.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7124.See file dsdata.pdf to determine how the superseded data were derived.
 HV7124
 HV7124_MARKER: DS = TRIANGULATION STATION DISK
 HV7124_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7124
 HV7124  HISTORY     - Date     Condition        Report By
 HV7124  HISTORY     - 1933     MONUMENTED       CGS
 HV7124  HISTORY     - 1957     MARK NOT FOUND   USGS
 HV7124
 HV7124                          STATION DESCRIPTION
 HV7124
 HV7124'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7124'ON THE SW SIDE OF SOUTH RIVER ABOUT 3 MILES FROM THE MOUTH, ON
 HV7124'BREWER POINT.  STATION IS ABOUT 100 YARDS W OF THE EXTREME POINT.
 HV7124'IN CULTIVATED FIELD ABOUT 70 FEET S OF HIGH-WATER LINE AND ABOUT
 HV7124'10 FEET ABOVE HIGH WATER.  IT IS ABOUT 100 FEET W OF A ROW OF
 HV7124'TREES SEPARATING THE CULTIVATED FIELD FROM SMALL MARSH NEAR THE
 HV7124'POINT.  THE MARK WAS PLACED ABOUT A FOOT BELOW THE SURFACE OF THE
 HV7124'GROUND.
 HV7124'
 HV7124'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7124'CONCRETE AS DESCRIBED.
 HV7124
 HV7124                          STATION RECOVERY (1957)
 HV7124
 HV7124'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV7124'STATION NOT FOUND.  PROBABLY LOST DUE TO EROSION OF BANK,
 HV7124'ALTHOUGH IT MAY BE COVERED BY FILL OF LAWN NEAR THE NEW HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5751 ***********************************************************************
 JV5751  DESIGNATION -  BREW
 JV5751  PID         -  JV5751
 JV5751  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5751  COUNTRY     -  US
 JV5751  USGS QUAD   -  ROUND BAY (2016)
 JV5751
 JV5751                         *CURRENT SURVEY CONTROL
 JV5751  ______________________________________________________________________
 JV5751* NAD 83(1991) POSITION- 39 03 25.69569(N) 076 33 56.35425(W)   ADJUSTED
 JV5751* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5751  ______________________________________________________________________
 JV5751  GEOID HEIGHT    -        -33.066 (meters)                     GEOID18
 JV5751  LAPLACE CORR    -         -5.03  (seconds)                    DEFLEC18
 JV5751  HORZ ORDER      -  THIRD
 JV5751
 JV5751.The horizontal coordinates were established by classical geodetic methods
 JV5751.and adjusted by the National Geodetic Survey in January 1992.
 JV5751
 JV5751.The orthometric height was scaled from a topographic map.
 JV5751
 JV5751.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5751.GEOID18 height accuracy estimate available here.
 JV5751
 JV5751.Click photographs - Photos may exist for this station.
 JV5751
 JV5751.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5751
 JV5751. The following values were computed from the NAD 83(1991) position.
 JV5751
 JV5751;                    North         East     Units Scale Factor Converg.
 JV5751;SPC MD       -   154,438.547   437,593.716   MT  0.99995484   +0 16 21.4
 JV5751;SPC MD       -   506,687.13  1,435,672.05   sFT  0.99995484   +0 16 21.4
 JV5751;UTM  18      - 4,324,283.634   364,532.872   MT  0.99982597   -0 59 12.0
 JV5751
 JV5751!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5751!SPC MD       -   1.00000476  x   0.99995484  =   0.99995960
 JV5751!UTM  18      -   1.00000476  x   0.99982597  =   0.99983073
 JV5751
 JV5751:                Primary Azimuth Mark                     Grid Az
 JV5751:SPC MD       -  BLANK                                    320 16 45.3
 JV5751:UTM  18      -  BLANK                                    321 32 18.7
 JV5751
 JV5751_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6453224283(NAD 83)
 JV5751
 JV5751|---------------------------------------------------------------------|
 JV5751| PID    Reference Object                     Distance      Geod. Az  |
 JV5751|                                                           dddmmss.s |
 JV5751| CB1013 BREW RM                              29.690 METERS 18010     |
 JV5751| JV5760 BLANK                               APPROX. 0.8 KM 3203306.7 |
 JV5751|---------------------------------------------------------------------|
 JV5751
 JV5751                          SUPERSEDED SURVEY CONTROL
 JV5751
 JV5751  NAD 83(1986)-  39 03 25.69222(N)    076 33 56.36441(W) AD(       ) 3
 JV5751  NAD 27      -  39 03 25.30000(N)    076 33 57.49200(W) AD(       ) 3
 JV5751
 JV5751.Superseded values are not recommended for survey control.
 JV5751
 JV5751.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5751.See file dsdata.pdf to determine how the superseded data were derived.
 JV5751
 JV5751_MARKER: DS = TRIANGULATION STATION DISK
 JV5751_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5751
 JV5751  HISTORY     - Date     Condition        Report By
 JV5751  HISTORY     - 1934     MONUMENTED       CGS
 JV5751
 JV5751                          STATION DESCRIPTION
 JV5751
 JV5751'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5751'THE STATION IS LOCATED ON THE S SIDE OF SEVERN RIVER DIRECTLY S
 JV5751'OF CEDAR POINT, BETWEEN VALENTINE CREEK AND LONG POINT, ON A SMALL
 JV5751'POINT OF LAND APPROXIMATELY 5 METERS FROM HIGH-WATER LINE AND 10
 JV5751'METERS FROM HIGH CLIFF.
 JV5751'
 JV5751'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5751'CONCRETE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7170 ***********************************************************************
 HV7170  DESIGNATION -  BREWER
 HV7170  PID         -  HV7170
 HV7170  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7170  COUNTRY     -  US
 HV7170  USGS QUAD   -  SOUTH RIVER (2016)
 HV7170
 HV7170                         *CURRENT SURVEY CONTROL
 HV7170  ______________________________________________________________________
 HV7170* NAD 83(1993) POSITION- 38 56 41.21360(N) 076 32 34.11779(W)   ADJUSTED
 HV7170* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7170  ______________________________________________________________________
 HV7170  GEOID HEIGHT    -        -33.284 (meters)                     GEOID18
 HV7170  LAPLACE CORR    -         -4.31  (seconds)                    DEFLEC18
 HV7170  HORZ ORDER      -  THIRD
 HV7170
 HV7170.The horizontal coordinates were established by classical geodetic methods
 HV7170.and adjusted by the National Geodetic Survey in November 1994.
 HV7170
 HV7170.The orthometric height was scaled from a topographic map.
 HV7170
 HV7170.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7170.GEOID18 height accuracy estimate available here.
 HV7170
 HV7170.Click photographs - Photos may exist for this station.
 HV7170
 HV7170.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7170
 HV7170. The following values were computed from the NAD 83(1993) position.
 HV7170
 HV7170;                    North         East     Units Scale Factor Converg.
 HV7170;SPC MD       -   141,975.679   439,633.322   MT  0.99995057   +0 17 13.0
 HV7170;SPC MD       -   465,798.54  1,442,363.66   sFT  0.99995057   +0 17 13.0
 HV7170;UTM  18      - 4,311,780.607   366,298.130   MT  0.99982012   -0 58 11.7
 HV7170
 HV7170!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7170!SPC MD       -   1.00000526  x   0.99995057  =   0.99995583
 HV7170!UTM  18      -   1.00000526  x   0.99982012  =   0.99982538
 HV7170
 HV7170:                Primary Azimuth Mark                     Grid Az
 HV7170:SPC MD       -  BRIDGE                                   294 00 41.1
 HV7170:UTM  18      -  BRIDGE                                   295 16 05.8
 HV7170
 HV7170_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6629811780(NAD 83)
 HV7170
 HV7170|---------------------------------------------------------------------|
 HV7170| PID    Reference Object                     Distance      Geod. Az  |
 HV7170|                                                           dddmmss.s |
 HV7170| HV7173 BREWER                                5.781 METERS 06900     |
 HV7170| CX2118 BREWER RM                             7.670 METERS 23501     |
 HV7170| HV7148 BRIDGE                              APPROX. 1.1 KM 2941754.1 |
 HV7170|---------------------------------------------------------------------|
 HV7170
 HV7170                          SUPERSEDED SURVEY CONTROL
 HV7170
 HV7170  NAD 83(1986)-  38 56 41.21012(N)    076 32 34.12882(W) AD(       ) 3
 HV7170  NAD 27      -  38 56 40.78800(N)    076 32 35.24500(W) AD(       ) 3
 HV7170  USSD        -  38 56 41.16700(N)    076 32 35.07100(W) AD(       ) 3
 HV7170
 HV7170.Superseded values are not recommended for survey control.
 HV7170
 HV7170.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7170.See file dsdata.pdf to determine how the superseded data were derived.
 HV7170
 HV7170_MARKER: N = NAIL
 HV7170_SETTING: 0 = UNSPECIFIED SETTING
 HV7170
 HV7170  HISTORY     - Date     Condition        Report By
 HV7170  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7170  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV7170
 HV7170                          STATION DESCRIPTION
 HV7170
 HV7170'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7170'ON THE SW SHORE OF SOUTH RIVER, ON LARRAMORE POINT, AT NW SIDE OF
 HV7170'MOUTH OF ALMSHOUSE CREEK, ABOUT 1/4 MILE NW BY N OF COUNTY
 HV7170'ALMSHOUSE, AND 1/2 MILE W BY S OF FERRY POINT.  STATION IS 1 FOOT
 HV7170'ABOVE AND 10 FEET BACK FROM HIGH-WATER MARK.
 HV7170'
 HV7170'STATION MARK IS NAIL IN PINE STUB FLUSH WITH GROUND.
 HV7170'
 HV7170'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7170'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7170'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7170'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7170'IS 7.67 METERS (25.16 FEET) FROM STATION IN BEARING S 55 DEG 1
 HV7170'MIN W.  DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV7170'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 12-INCH LEANING RED-OAK
 HV7170'TREE, 6.61 METERS (21.69 FEET), S 20 DEG 55 MIN W. NAIL IN BLAZE
 HV7170'IN 3-INCH WHITE OAK TREE, 9.11 METERS (29.89 FEET), N 87 DEG 16
 HV7170'MIN W.  PEAK OF YELLOW HOUSE ON OPPOSITE SHORE, 1 1/2 MILES, N 41
 HV7170'DEG 4 MIN E.  WAGGAMANS WINDMILL, 3/4 MILE, N 78 DEG 5 MIN E.
 HV7170'FLAGPOLE ON WAGGAMANS CLUBHOUSE, 3/4 MILE, N 83 DEG 15 MIN E.  N
 HV7170'CHIMNEY ON ALMSHOUSE, 1/4 MILE, S 36 DEG 3 MIN E.
 HV7170
 HV7170                          STATION RECOVERY (1961)
 HV7170
 HV7170'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 HV7170'STATION AND R.M. WERE SEARCHED FOR BUT COULD NOT BE FOUND.  IT IS
 HV7170'POSSIBLE BOTH THE STATION AND R.M. HAVE BEEN WASHED OUT DUE TO THE
 HV7170'RECEDING SHORELINE AT THIS POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7173 ***********************************************************************
 HV7173  DESIGNATION -  BREWER
 HV7173  PID         -  HV7173
 HV7173  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7173  COUNTRY     -  US
 HV7173  USGS QUAD   -  SOUTH RIVER (2016)
 HV7173
 HV7173                         *CURRENT SURVEY CONTROL
 HV7173  ______________________________________________________________________
 HV7173* NAD 83(1993) POSITION- 38 56 41.28078(N) 076 32 33.89370(W)   ADJUSTED
 HV7173* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7173  ______________________________________________________________________
 HV7173  GEOID HEIGHT    -        -33.284 (meters)                     GEOID18
 HV7173  LAPLACE CORR    -         -4.30  (seconds)                    DEFLEC18
 HV7173  HORZ ORDER      -  THIRD
 HV7173
 HV7173.The horizontal coordinates were established by classical geodetic methods
 HV7173.and adjusted by the National Geodetic Survey in November 1994.
 HV7173
 HV7173.The orthometric height was scaled from a topographic map.
 HV7173
 HV7173.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7173.GEOID18 height accuracy estimate available here.
 HV7173
 HV7173.Click photographs - Photos may exist for this station.
 HV7173
 HV7173.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7173
 HV7173. The following values were computed from the NAD 83(1993) position.
 HV7173
 HV7173;                    North         East     Units Scale Factor Converg.
 HV7173;SPC MD       -   141,977.778   439,638.708   MT  0.99995057   +0 17 13.2
 HV7173;SPC MD       -   465,805.43  1,442,381.33   sFT  0.99995057   +0 17 13.2
 HV7173;UTM  18      - 4,311,782.587   366,303.560   MT  0.99982010   -0 58 11.5
 HV7173
 HV7173!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7173!SPC MD       -   1.00000526  x   0.99995057  =   0.99995583
 HV7173!UTM  18      -   1.00000526  x   0.99982010  =   0.99982536
 HV7173
 HV7173:                Primary Azimuth Mark                     Grid Az
 HV7173:SPC MD       -  SWITCH                                   120 46 49.9
 HV7173:UTM  18      -  SWITCH                                   122 02 14.6
 HV7173
 HV7173_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6630311782(NAD 83)
 HV7173
 HV7173|---------------------------------------------------------------------|
 HV7173| PID    Reference Object                     Distance      Geod. Az  |
 HV7173|                                                           dddmmss.s |
 HV7173| HV7132 SWITCH                              APPROX. 2.7 KM 1210403.1 |
 HV7173|---------------------------------------------------------------------|
 HV7173
 HV7173                          SUPERSEDED SURVEY CONTROL
 HV7173
 HV7173  NAD 83(1991)-  38 56 41.28079(N)    076 32 33.89370(W) AD(       ) 3
 HV7173  NAD 83(1986)-  38 56 41.27731(N)    076 32 33.90472(W) AD(       ) 3
 HV7173  NAD 27      -  38 56 40.85400(N)    076 32 35.02000(W) AD(       ) 3
 HV7173  USSD        -  38 56 41.23300(N)    076 32 34.84600(W) AD(       ) 3
 HV7173
 HV7173.Superseded values are not recommended for survey control.
 HV7173
 HV7173.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7173.See file dsdata.pdf to determine how the superseded data were derived.
 HV7173
 HV7173_MARK LOGO: CGS
 HV7173
 HV7173  HISTORY     - Date     Condition        Report By
 HV7173  HISTORY     - 1899     MONUMENTED       CGS
 HV7173  HISTORY     - 1906     GOOD             CGS
 HV7173
 HV7173                          STATION DESCRIPTION
 HV7173
 HV7173'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 HV7173'ON THE SW SIDE OF SOUTH RIVER, ON LARRAMORE POINT, AT NW SIDE OF
 HV7173'ENTRANCE TO ALMSHOUSE CREEK.  A SMALL OAK TREE WITH TRIANGULAR
 HV7173'BLAZE BEARS S 47 DEG W, DISTANT 18.6 FEET.  CENTER OF SHORT LARGE
 HV7173'CEDAR STUMP BEARS S 66 DEG W, DISTANT 9.1 FEET, A LARGE CHESTNUT
 HV7173'TREE ON BANK WITH TRIANGULAR BLAZE BEARS DUE W, DISTANT 48.7 FEET
 HV7173'FROM STATION.  SMALL PERSIMMON STUMP, ABOUT 2 FEET TALL, BEARS N
 HV7173'13 DEG W, DISTANT 8.6 FEET FROM THE STATION.  STATION MARK IS
 HV7173'CENTER OF TILE PIPE WITH TOP SET ABOUT 9 INCHES BELOW SURFACE OF
 HV7173'GROUND.  IN 1903 EROSION HAD PARTLY UNCOVERED THIS PIPE, AND IN
 HV7173'1906 A NEW STATION WAS ESTABLISHED 19 FEET TO THE W AND CALLED
 HV7173'BREWER (1906).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5754 ***********************************************************************
 JV5754  DESIGNATION -  BREWER
 JV5754  PID         -  JV5754
 JV5754  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5754  COUNTRY     -  US
 JV5754  USGS QUAD   -  ROUND BAY (2016)
 JV5754
 JV5754                         *CURRENT SURVEY CONTROL
 JV5754  ______________________________________________________________________
 JV5754* NAD 83(1991) POSITION- 39 01 42.19714(N) 076 31 58.57311(W)   ADJUSTED
 JV5754* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5754  ______________________________________________________________________
 JV5754  GEOID HEIGHT    -        -33.180 (meters)                     GEOID18
 JV5754  LAPLACE CORR    -         -4.21  (seconds)                    DEFLEC18
 JV5754  HORZ ORDER      -  THIRD
 JV5754
 JV5754.The horizontal coordinates were established by classical geodetic methods
 JV5754.and adjusted by the National Geodetic Survey in January 1992.
 JV5754
 JV5754.The orthometric height was scaled from a topographic map.
 JV5754
 JV5754.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5754.GEOID18 height accuracy estimate available here.
 JV5754
 JV5754.Click photographs - Photos may exist for this station.
 JV5754
 JV5754.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5754
 JV5754. The following values were computed from the NAD 83(1991) position.
 JV5754
 JV5754;                    North         East     Units Scale Factor Converg.
 JV5754;SPC MD       -   151,261.042   440,441.756   MT  0.99995338   +0 17 35.3
 JV5754;SPC MD       -   496,262.27  1,445,015.99   sFT  0.99995338   +0 17 35.3
 JV5754;UTM  18      - 4,321,044.753   367,310.044   MT  0.99981680   -0 57 55.6
 JV5754
 JV5754!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5754!SPC MD       -   1.00000477  x   0.99995338  =   0.99995815
 JV5754!UTM  18      -   1.00000477  x   0.99981680  =   0.99982157
 JV5754
 JV5754:                Primary Azimuth Mark                     Grid Az
 JV5754:SPC MD       -  ROUND                                    293 10 02.5
 JV5754:UTM  18      -  ROUND                                    294 25 33.4
 JV5754
 JV5754_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6731021044(NAD 83)
 JV5754
 JV5754|---------------------------------------------------------------------|
 JV5754| PID    Reference Object                     Distance      Geod. Az  |
 JV5754|                                                           dddmmss.s |
 JV5754| CB1017 BREWER RM                             8.100 METERS 17520     |
 JV5754| JV5770 ROUND                               417.036 METERS 2932737.8 |
 JV5754|---------------------------------------------------------------------|
 JV5754
 JV5754                          SUPERSEDED SURVEY CONTROL
 JV5754
 JV5754  NAD 83(1986)-  39 01 42.19360(N)    076 31 58.58409(W) AD(       ) 3
 JV5754  NAD 27      -  39 01 41.79500(N)    076 31 59.72200(W) AD(       ) 3
 JV5754  USSD        -  39 01 42.14400(N)    076 31 59.56800(W) AD(       ) 3
 JV5754
 JV5754.Superseded values are not recommended for survey control.
 JV5754
 JV5754.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5754.See file dsdata.pdf to determine how the superseded data were derived.
 JV5754
 JV5754
 JV5754  HISTORY     - Date     Condition        Report By
 JV5754  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5754  HISTORY     - 1906     GOOD             CGS
 JV5754  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5754
 JV5754                          STATION DESCRIPTION
 JV5754
 JV5754'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5754'ON THE SW SHORE OF SEVERN RIVER, ON BREWER POINT, N OF MOUTH OF
 JV5754'BREWER CREEK.  STATION IS ON LOW SAND POINT, ABOUT 2 FEET ABOVE
 JV5754'AND 10 FEET BACK FROM HIGH-WATER MARK AND ABOUT 30 YARDS NW OF
 JV5754'EXTREME END OF POINT.  A SMALL HOLLY TREE STANDS SW OF THE
 JV5754'STATION AND A BLUFF 30 FEET HIGH IS 25 YARDS SW.  STATION MARK
 JV5754'IS NAIL IN PINE STUB WITH TOP 2 INCHES BELOW SURFACE OF
 JV5754'GROUND.  THE STUB IS INSIDE A 4-INCH TILE PIPE SET WITH TOP 6
 JV5754'INCHES BELOW SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A
 JV5754'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 JV5754'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 JV5754'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 JV5754'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 JV5754'8.10 METERS (26.57 FEET) FROM STATION S 4 DEG 41
 JV5754'MIN E.  DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 JV5754'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 5-INCH HOLLY
 JV5754'TREE, 3.64 METERS (11.94 FEET), S 34 DEG 33 MIN W.  NAIL IN BLAZE
 JV5754'IN 12-INCH CEDAR TREE, 35 YARDS, N 83 DEG 26 MIN W.  N CHIMNEY OF
 JV5754'YELLOW HOUSE ON OPPOSITE SHORE, 1/2 MILE, N 35 DEG 47 MIN E.
 JV5754'N CHIMNEY OF GREEN HOUSE WITH WINDMILL IN REAR ON OPPOSITE
 JV5754'SHORE, 3/4 MILE, S 73 DEG 59 MIN E.  N CHIMNEY OF WHITE
 JV5754'HOUSE ON OPPOSITE SHORE, 1 MILE, S 64 DEG 05 MIN E.  CHIMNEY IN
 JV5754'CENTER OF YELLOW HOUSE, 1-1/2 MILES, S 37 DEG 56 MIN E.
 JV5754
 JV5754                          STATION RECOVERY (1961)
 JV5754
 JV5754'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5754'STATION WAS SEARCHED FOR BUT NOT FOUND.  THE AREA HAS NOW BEEN
 JV5754'FILLED IN WITH DIRT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5799 ***********************************************************************
 JV5799  DESIGNATION -  BREWER
 JV5799  PID         -  JV5799
 JV5799  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5799  COUNTRY     -  US
 JV5799  USGS QUAD   -  ROUND BAY (2016)
 JV5799
 JV5799                         *CURRENT SURVEY CONTROL
 JV5799  ______________________________________________________________________
 JV5799* NAD 83(1991) POSITION- 39 01 36.06845(N) 076 32 04.76783(W)   ADJUSTED
 JV5799* NAVD 88 ORTHO HEIGHT -    37.    (meters)      121.    (feet) SCALED
 JV5799  ______________________________________________________________________
 JV5799  GEOID HEIGHT    -        -33.179 (meters)                     GEOID18
 JV5799  LAPLACE CORR    -         -4.33  (seconds)                    DEFLEC18
 JV5799  HORZ ORDER      -  SECOND
 JV5799
 JV5799.The horizontal coordinates were established by classical geodetic methods
 JV5799.and adjusted by the National Geodetic Survey in January 1992.
 JV5799
 JV5799.The orthometric height was scaled from a topographic map.
 JV5799
 JV5799.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5799.GEOID18 height accuracy estimate available here.
 JV5799
 JV5799.Click photographs - Photos may exist for this station.
 JV5799
 JV5799.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5799
 JV5799. The following values were computed from the NAD 83(1991) position.
 JV5799
 JV5799;                    North         East     Units Scale Factor Converg.
 JV5799;SPC MD       -   151,071.297   440,293.725   MT  0.99995330   +0 17 31.4
 JV5799;SPC MD       -   495,639.75  1,444,530.33   sFT  0.99995330   +0 17 31.4
 JV5799;UTM  18      - 4,320,858.331   367,157.902   MT  0.99981730   -0 57 59.4
 JV5799
 JV5799!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5799!SPC MD       -   0.99999944  x   0.99995330  =   0.99995274
 JV5799!UTM  18      -   0.99999944  x   0.99981730  =   0.99981674
 JV5799
 JV5799:                Primary Azimuth Mark                     Grid Az
 JV5799:SPC MD       -  ANNAPOLIS NAVAL ACAD CHAPEL              139 50 25.9
 JV5799:UTM  18      -  ANNAPOLIS NAVAL ACAD CHAPEL              141 05 56.7
 JV5799
 JV5799_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6715720858(NAD 83)
 JV5799
 JV5799|---------------------------------------------------------------------|
 JV5799| PID    Reference Object                     Distance      Geod. Az  |
 JV5799|                                                           dddmmss.s |
 JV5799| CB1014 BREWER RM 1 AZIMUTH                                0354131.4 |
 JV5799| CB1015 BREWER RM 2                          34.339 METERS 07303     |
 JV5799| JV5800 RIDGEWAY STANDPIPE                  APPROX. 2.3 KM 0974837.7 |
 JV5799| JV5794 RIDGEWAY TANK                       APPROX. 2.7 KM 1145957.9 |
 JV5799| HV6395 ANNAPOLIS NAVAL ACAD CHAPEL         APPROX. 6.5 KM 1400757.3 |
 JV5799| HV6393 ANNAPOLIS ST CAPITOL BLDG DOME      APPROX. 6.5 KM 1443039.9 |
 JV5799| HV6394 ANNAPOLIS ST MARYS RC CH SPIRE      APPROX. 7.0 KM 1443924.0 |
 JV5799| CB1016 BREWER RM 3                          30.703 METERS 30957     |
 JV5799|---------------------------------------------------------------------|
 JV5799
 JV5799                          SUPERSEDED SURVEY CONTROL
 JV5799
 JV5799  NAD 83(1986)-  39 01 36.06501(N)    076 32 04.77822(W) AD(       ) 2
 JV5799  NAD 27      -  39 01 35.66702(N)    076 32 05.91241(W) AD(       ) 2
 JV5799
 JV5799.Superseded values are not recommended for survey control.
 JV5799
 JV5799.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5799.See file dsdata.pdf to determine how the superseded data were derived.
 JV5799
 JV5799_MARKER: DS = TRIANGULATION STATION DISK
 JV5799_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5799_STAMPING: BREWER 1933
 JV5799_MARK LOGO: CGS
 JV5799
 JV5799  HISTORY     - Date     Condition        Report By
 JV5799  HISTORY     - 1933     MONUMENTED       CGS
 JV5799  HISTORY     - 1960     GOOD             CGS
 JV5799  HISTORY     - 1965     GOOD             CGS
 JV5799
 JV5799                          STATION DESCRIPTION
 JV5799
 JV5799'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5799'THE STATION IS ON THE SW SHORE OF SEVERN RIVER ON THE BLUFF
 JV5799'OVERLOOKING BREWER POINT IN SHERWOOD FOREST.  BREWER POINT IS THE
 JV5799'MOST EASTERLY POINT OF SHERWOOD FOREST, LYING ON THE NW ANGLE
 JV5799'FORMED BY THE JUNCTION OF THE SEVERN RIVER AND BREWER CREEK.  THE
 JV5799'HILL ON WHICH THE STATION IS LOCATED, IS THE HIGHEST IN SHERWOOD
 JV5799'FOREST.  THE STATION IS IN THE CIRCLE FORMED BY THE PAVED ROAD
 JV5799'ON TOP OF THIS HILL, 26 YARDS E OF THE Y FORMED BY THE LOOP OF
 JV5799'THE ROAD, 26 YARDS W, AND 5 YARDS S OF THE SW CORNER OF
 JV5799'COTTAGE NUMBER 713 (THE MOST EASTERLY IN THE DEVELOPMENT), 3
 JV5799'YARDS E OF A 10-INCH PINE, 5 YARDS N OF AN 8-INCH OAK, 10 YARDS S
 JV5799'OF 24-INCH OAK, AND 7 YARDS W OF 12-INCH PINE.
 JV5799'
 JV5799'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5799'DISKS SET IN CONCRETE.
 JV5799'
 JV5799'REFERENCE MARK NO.1, THE AZIMUTH MARK, IS DOWN THE HILL TO THE
 JV5799'NNE FROM THE STATION, AT THE TOP OF THE EMBANKMENT ON THE S SHORE
 JV5799'OF THE SEVERN RIVER, 30 FEET W OF THE NW CORNER OF COTTAGE 804,
 JV5799'25 FEET E OF COTTAGE 805, AND 3 FEET NW OF AN 18-INCH OAK.
 JV5799'
 JV5799'REFERENCE MARK NO.2 IS ENE OF THE STATION, ON THE NE CORNER
 JV5799'OF THE TOP OF THE HILL, 13 YARDS NW OF THE NW CORNER OF COTTAGE 713,
 JV5799'10 YARDS NE OF THE CENTER LINE OF THE PAVED ROAD, AND 2 YARDS WNW
 JV5799'OF A 48-INCH OAK.
 JV5799'
 JV5799'REFERENCE MARK NO.3 IS NW OF THE STATION, 4 FEET S OF THE S EDGE
 JV5799'OF THE PORCH OF COTTAGE 717 AND 3 YARDS BACK FROM ITS SE CORNER,
 JV5799'4 FEET E OF A 10-INCH OAK, AND 15 YARDS N OF THE Y FORMED BY THE
 JV5799'ROAD.
 JV5799'
 JV5799'ALL MARKS STAND ABOUT 6 INCHES ABOVE THE GROUND.  THE AZIMUTH
 JV5799'MARK WILL REQUIRE A 6-FOOT TARGET TO BE VISIBLE TO THE STATION.  IT
 JV5799'MAY BE USED AS A HYDROGRAPHIC SIGNAL.
 JV5799'
 JV5799'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5799
 JV5799                          STATION RECOVERY (1960)
 JV5799
 JV5799'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 JV5799'STATION AND REFERENCE MARKS FOUND IN GOOD CONDITION.  THERE IS NO
 JV5799'LONGER A CIRCLE FORMED BY THE PAVED ROAD.  THE STATION IS IN THE
 JV5799'CENTER OF THE LAWN IN FRONT OF THE HOUSE ON THE S SIDE OF THE
 JV5799'PAVED ROAD.
 JV5799'
 JV5799'RECORDED DISTANCES--STATION TO RM. NO 2 112.59 FT.
 JV5799'
 JV5799'STATION TO R.M. NO 3 100.68 FT.
 JV5799
 JV5799                          STATION RECOVERY (1965)
 JV5799
 JV5799'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (JKW)
 JV5799'STATION MARK AND RM NO. 2 RECOVERED IN GOOD CONDITION.  RM NO. 1
 JV5799'AND NO. 3 NOT SEARCHED FOR.  THE DESCRIPTION BY R.D.H. IN 1933 AND
 JV5799'RECOVERY NOTE BY G.F.W. IN 1960 IS ADEQUATE FOR RECOVERY WITH
 JV5799'THE FOLLOWING ADDITIONS--
 JV5799'
 JV5799'THE STATION IS IN THE FRONT LAWN, N OF HOUSE NUMBER 711, WHICH
 JV5799'IS ON THE HIGHEST GROUND ON BREWER POINT.  RM NO. 2 IS AT THE
 JV5799'CORNER OF CONCRETE WALK LEADING TO HOUSE NUMBER 714.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5741 ***********************************************************************
 JV5741  DESIGNATION -  BREWERTON CHANNEL FRONT RNG LT
 JV5741  PID         -  JV5741
 JV5741  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5741  COUNTRY     -  US
 JV5741  USGS QUAD   -  CURTIS BAY (2016)
 JV5741
 JV5741                         *CURRENT SURVEY CONTROL
 JV5741  ______________________________________________________________________
 JV5741* NAD 83(1991) POSITION- 39 12 28.45981(N) 076 31 57.40452(W)   ADJUSTED
 JV5741  ______________________________________________________________________
 JV5741  GEOID HEIGHT    -        -32.991 (meters)                     GEOID18
 JV5741  LAPLACE CORR    -         -2.57  (seconds)                    DEFLEC18
 JV5741  HORZ ORDER      -  THIRD
 JV5741
 JV5741.The horizontal coordinates were established by classical geodetic methods
 JV5741.and adjusted by the National Geodetic Survey in January 1992.
 JV5741
 JV5741.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5741.GEOID18 height accuracy estimate available here.
 JV5741
 JV5741.Click photographs - Photos may exist for this station.
 JV5741
 JV5741.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5741
 JV5741. The following values were computed from the NAD 83(1991) position.
 JV5741
 JV5741;                    North         East     Units Scale Factor Converg.
 JV5741;SPC MD       -   171,189.727   440,367.830   MT  0.99996661   +0 17 36.1
 JV5741;SPC MD       -   561,644.96  1,444,773.46   sFT  0.99996661   +0 17 36.1
 JV5741;UTM  18      - 4,340,967.393   367,674.459   MT  0.99981560   -0 58 08.3
 JV5741
 JV5741_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6767440967(NAD 83)
 JV5741
 JV5741                          SUPERSEDED SURVEY CONTROL
 JV5741
 JV5741  NAD 83(1986)-  39 12 28.45587(N)    076 31 57.41406(W) AD(       ) 3
 JV5741  NAD 27      -  39 12 28.07039(N)    076 31 58.54492(W) AD(       ) 3
 JV5741
 JV5741.Superseded values are not recommended for survey control.
 JV5741
 JV5741.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5741.See file dsdata.pdf to determine how the superseded data were derived.
 JV5741
 JV5741_MARKER: 14 = NAVIGATION LIGHT
 JV5741
 JV5741  HISTORY     - Date     Condition        Report By
 JV5741  HISTORY     - 1934     FIRST OBSERVED   CGS
 JV5741  HISTORY     - 1975     GOOD             NGS
 JV5741  HISTORY     - 1979     GOOD             LOCENG
 JV5741  HISTORY     - 1984     GOOD             USPSQD
 JV5741
 JV5741                          STATION DESCRIPTION
 JV5741
 JV5741'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5741'STATION IS ON HAWKINS POINT, S SHORE PATAPSCO RIVER ABOUT 230
 JV5741'METERS S OF THE POINT AND NEAR OLD PIER.  AT FORT ARMISTEAD WHICH
 JV5741'IS NOW PART OF THE PARK SYSTEM OF THE CITY OF BALTIMORE.  ABOUT
 JV5741'20 METERS OFFSHORE.
 JV5741'
 JV5741'RANGE IS BLACK WOODEN DAY BEACON WITH WHITE TARGET, IS 27 FEET
 JV5741'HIGH AND HAS A LIGHT ON TOP.  LIGHT ON TOP OF DAY BEACON MARKS
 JV5741'THE POINT.
 JV5741
 JV5741                          STATION RECOVERY (1975)
 JV5741
 JV5741'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5741'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5741
 JV5741                          STATION RECOVERY (1979)
 JV5741
 JV5741'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1979 (FFB)
 JV5741'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5741'
 JV5741'DISTANCE AND DIRECTION FROM NEAREST TOWN--ON HAWKINS POINT.
 JV5741
 JV5741                          STATION RECOVERY (1984)
 JV5741
 JV5741'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5741'STATION FOUND AS DESCRIBED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5682 ***********************************************************************
 JV5682  DESIGNATION -  BREWERTON CHANNEL REAR RNG LT
 JV5682  PID         -  JV5682
 JV5682  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5682  COUNTRY     -  US
 JV5682  USGS QUAD   -  CURTIS BAY (2016)
 JV5682
 JV5682                         *CURRENT SURVEY CONTROL
 JV5682  ______________________________________________________________________
 JV5682* NAD 83(1991) POSITION- 39 12 49.21846(N) 076 33 06.31374(W)   ADJUSTED
 JV5682  ______________________________________________________________________
 JV5682  GEOID HEIGHT    -        -32.958 (meters)                     GEOID18
 JV5682  LAPLACE CORR    -         -3.26  (seconds)                    DEFLEC18
 JV5682  HORZ ORDER      -  THIRD
 JV5682
 JV5682.The horizontal coordinates were established by classical geodetic methods
 JV5682.and adjusted by the National Geodetic Survey in January 1992.
 JV5682
 JV5682.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5682.GEOID18 height accuracy estimate available here.
 JV5682
 JV5682.Click photographs - Photos may exist for this station.
 JV5682
 JV5682.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5682
 JV5682. The following values were computed from the NAD 83(1991) position.
 JV5682
 JV5682;                    North         East     Units Scale Factor Converg.
 JV5682;SPC MD       -   171,821.578   438,711.471   MT  0.99996719   +0 16 52.8
 JV5682;SPC MD       -   563,717.96  1,439,339.22   sFT  0.99996719   +0 16 52.8
 JV5682;UTM  18      - 4,341,635.484   366,032.667   MT  0.99982098   -0 58 52.3
 JV5682
 JV5682_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6603241635(NAD 83)
 JV5682
 JV5682                          SUPERSEDED SURVEY CONTROL
 JV5682
 JV5682  NAD 83(1986)-  39 12 49.21472(N)    076 33 06.32323(W) AD(       ) 3
 JV5682  NAD 27      -  39 12 48.82700(N)    076 33 07.45300(W) AD(       ) 3
 JV5682
 JV5682.Superseded values are not recommended for survey control.
 JV5682
 JV5682.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5682.See file dsdata.pdf to determine how the superseded data were derived.
 JV5682
 JV5682_MARKER: 14 = NAVIGATION LIGHT
 JV5682
 JV5682  HISTORY     - Date     Condition        Report By
 JV5682  HISTORY     - 1934     FIRST OBSERVED   CGS
 JV5682  HISTORY     - 1975     GOOD             NGS
 JV5682  HISTORY     - 1984     GOOD             USPSQD
 JV5682
 JV5682                          STATION DESCRIPTION
 JV5682
 JV5682'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5682'STATION IS ON LEADING POINT ON PROPERTY OF U.S. QUARANTINE STATION
 JV5682'AT S ENTRANCE OF CURTIS BAY FROM PATAPSCO RIVER.  BACK FROM
 JV5682'WATERS EDGE ABOUT 200 METERS IN AN OPEN FIELD.
 JV5682'
 JV5682'RANGE IS BLACK WOODEN STRUCTURE WITH WHITE TARGET AND IS 82
 JV5682'FEET HIGH.  RANGE HAS LIGHTS ON TOP OF DAY BEACON WHICH MARK POINT.
 JV5682
 JV5682                          STATION RECOVERY (1975)
 JV5682
 JV5682'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5682'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5682
 JV5682                          STATION RECOVERY (1984)
 JV5682
 JV5682'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5682'STATION RECOVERED AS DESCRIBED, IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6203 ***********************************************************************
 DN6203  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6203  DESIGNATION -  BREWSTER
 DN6203  PID         -  DN6203
 DN6203  STATE/COUNTY-  MD/CECIL
 DN6203  COUNTRY     -  US
 DN6203  USGS QUAD   -  NEWARK WEST (2016)
 DN6203
 DN6203                         *CURRENT SURVEY CONTROL
 DN6203  ______________________________________________________________________
 DN6203* NAD 83(2011) POSITION- 39 39 56.97077(N) 075 50 17.69066(W)   ADJUSTED
 DN6203* NAD 83(2011) ELLIP HT-    20.389 (meters)        (06/27/12)   ADJUSTED
 DN6203* NAD 83(2011) EPOCH   -  2010.00
 DN6203* NAVD 88 ORTHO HEIGHT -    53.45  (meters)      175.4   (feet) GPS OBS
 DN6203  ______________________________________________________________________
 DN6203  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6203  GEOID HEIGHT    -        -33.038 (meters)                     GEOID03
 DN6203  GEOID HEIGHT    -        -33.058 (meters)                     GEOID18
 DN6203  NAD 83(2011) X  -  1,202,869.400 (meters)                     COMP
 DN6203  NAD 83(2011) Y  - -4,767,072.593 (meters)                     COMP
 DN6203  NAD 83(2011) Z  -  4,049,505.959 (meters)                     COMP
 DN6203  LAPLACE CORR    -          0.46  (seconds)                    DEFLEC18
 DN6203
 DN6203  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6203  Standards:
 DN6203         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6203            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6203  -------------------------------------------------------------------
 DN6203  NETWORK    0.64   1.61           0.28   0.24   0.82      0.08552101
 DN6203  -------------------------------------------------------------------
 DN6203  Click here for local accuracies and other accuracy information.
 DN6203
 DN6203.The horizontal coordinates were established by GPS observations
 DN6203.and adjusted by the National Geodetic Survey in June 2012.
 DN6203
 DN6203.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6203.been affixed to the stable North American tectonic plate. See 
 DN6203.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6203
 DN6203.The horizontal coordinates are valid at the epoch date displayed above
 DN6203.which is a decimal equivalence of Year/Month/Day.
 DN6203
 DN6203.The orthometric height was determined by GPS observations and a
 DN6203.high-resolution geoid model using precise GPS observation and
 DN6203.processing techniques.
 DN6203
 DN6203.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6203.GEOID18 height accuracy estimate available here.
 DN6203
 DN6203.Click photographs - Photos may exist for this station.
 DN6203
 DN6203.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6203
 DN6203.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6203
 DN6203.The ellipsoidal height was determined by GPS observations
 DN6203.and is referenced to NAD 83.
 DN6203
 DN6203. The following values were computed from the NAD 83(2011) position.
 DN6203
 DN6203;                    North         East     Units Scale Factor Converg.
 DN6203;SPC MD       -   222,560.755   499,690.226   MT  1.00004489   +0 43 45.0
 DN6203;SPC MD       -   730,184.74  1,639,400.35   sFT  1.00004489   +0 43 45.0
 DN6203;UTM  18      - 4,391,003.895   428,099.398   MT  0.99966365   -0 32 06.3
 DN6203
 DN6203!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6203!SPC MD       -   0.99999680  x   1.00004489  =   1.00004169
 DN6203!UTM  18      -   0.99999680  x   0.99966365  =   0.99966045
 DN6203
 DN6203_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2809991003(NAD 83)
 DN6203
 DN6203                          SUPERSEDED SURVEY CONTROL
 DN6203
 DN6203  NAD 83(2007)-  39 39 56.97098(N)    075 50 17.69132(W) AD(2002.00) 1
 DN6203  ELLIP H (02/23/12)   20.420  (m)                       GP(2002.00) 4 1
 DN6203
 DN6203.Superseded values are not recommended for survey control.
 DN6203
 DN6203.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6203.See file dsdata.pdf to determine how the superseded data were derived.
 DN6203
 DN6203_MARKER: DD = SURVEY DISK
 DN6203_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6203_STAMPING: BREWSTER 2008
 DN6203_MARK LOGO: MD-015
 DN6203_PROJECTION: FLUSH
 DN6203_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6203_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6203+STABILITY: SURFACE MOTION
 DN6203_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6203+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6203
 DN6203  HISTORY     - Date     Condition        Report By
 DN6203  HISTORY     - 20081204 MONUMENTED       GWS
 DN6203  HISTORY     - 20250916 GOOD             PROFLN
 DN6203
 DN6203                          STATION DESCRIPTION
 DN6203
 DN6203'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6203'THE STATION IS LOCATED 0.9 MI (1.4 KM) EASTERLY OF CHERRY HILL.
 DN6203'
 DN6203'TO REACH FROM THE JUNCTION OF MD 273 AND MD 213, GO SOUTH ON MD 213
 DN6203'FOR 2.88 MI (4.6 KM) TO A ROUNDABOUT.  TAKE THE THIRD EXIT AND GO EAST
 DN6203'ON LEEDS ROAD FOR 0.14 MI (0.2 KM) TO AN INTERSECTION.  CONTINUE EAST
 DN6203'ON ELK MILLS ROAD FOR 0.79 MI (1.3 KM) TO AN INTERSECTION.  TURN RIGHT
 DN6203'AND GO SOUTHEAST ON ELK MILLS ROAD FOR 0.08 MI (0.1 KM) TO AN
 DN6203'INTERSECTION.  TURN LEFT AND GO EAST ON BREWSTER BRIDGE ROAD FOR 0.03
 DN6203'MI (0.0 KM) TO THE MARK ON THE RIGHT.
 DN6203'
 DN6203'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6203'CONCRETE MONUMENT APPROXIMATELY 106 FT (32.3 M) EAST OF ELK MILLS
 DN6203'ROAD, 6.8 FT (2.1 M) SOUTH OF THE SOUTH EDGE OF BREWSTER BRIDGE ROAD,
 DN6203'32 FT (9.8 M) SOUTH OF A DRIVEWAY ON THE NORTH SIDE OF THE ROAD AND
 DN6203'94.1 FT (28.7 M) FROM A UTILITY POLE ON THE SOUTHEAST SIDE OF THE
 DN6203'INTERSECTION OF BREWSTER BRIDGE AND ELK MILLS ROADS.
 DN6203
 DN6203                          STATION RECOVERY (2025)
 DN6203
 DN6203'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6203'THE MARK IS 115 FT EAST OF ELK MILLS RD, 94 FT EAST OF POLE
 DN6203'40544-40435, 85 FT WEST OF POLE 40452-40548, 84 FT WEST OF 18 INCH
 DN6203'CEDAR TREE, 71 FT WEST OF WEST LINE EXTENDED OF ONE-STORY TAN MASONRY
 DN6203'HOUSE ACROSS BREWSTER BRIDGE RD ON TOP OF A HILL, 4.5 FT NORTH OF
 DN6203'OVERHEAD UTILITY LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5821 ***********************************************************************
 HV5821  DESIGNATION -  BRIAN
 HV5821  PID         -  HV5821
 HV5821  STATE/COUNTY-  MD/QUEEN ANNES
 HV5821  COUNTRY     -  US
 HV5821  USGS QUAD   -  QUEENSTOWN (2016)
 HV5821
 HV5821                         *CURRENT SURVEY CONTROL
 HV5821  ______________________________________________________________________
 HV5821* NAD 83(1991) POSITION- 38 55 52.33996(N) 076 12 45.86668(W)   ADJUSTED
 HV5821* NAVD 88 ORTHO HEIGHT -    -0.23  (+/-2cm)       -0.8   (feet) VERTCON3
 HV5821  ______________________________________________________________________
 HV5821  GEOID HEIGHT    -        -33.943 (meters)                     GEOID18
 HV5821  LAPLACE CORR    -         -4.57  (seconds)                    DEFLEC18
 HV5821  HORZ ORDER      -  THIRD
 HV5821  VERT ORDER      -  THIRD ? (See Below)
 HV5821
 HV5821.The horizontal coordinates were established by classical geodetic methods
 HV5821.and adjusted by the National Geodetic Survey in January 1992.
 HV5821
 HV5821.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV5821.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV5821
 HV5821.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5821.GEOID18 height accuracy estimate available here.
 HV5821
 HV5821.The vertical order pertains to the NGVD 29 superseded value.
 HV5821
 HV5821.Click photographs - Photos may exist for this station.
 HV5821
 HV5821.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5821
 HV5821. The following values were computed from the NAD 83(1991) position.
 HV5821
 HV5821;                    North         East     Units Scale Factor Converg.
 HV5821;SPC MD       -   140,663.707   468,259.191   MT  0.99995031   +0 29 38.8
 HV5821;SPC MD       -   461,494.18  1,536,280.36   sFT  0.99995031   +0 29 38.8
 HV5821;UTM  18      - 4,309,841.551   394,883.369   MT  0.99973606   -0 45 43.7
 HV5821
 HV5821!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5821!SPC MD       -   1.00000536  x   0.99995031  =   0.99995567
 HV5821!UTM  18      -   1.00000536  x   0.99973606  =   0.99974142
 HV5821
 HV5821:                Primary Azimuth Mark                     Grid Az
 HV5821:SPC MD       -  GREEN                                    170 30 27.8
 HV5821:UTM  18      -  GREEN                                    171 45 50.3
 HV5821
 HV5821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9488309841(NAD 83)
 HV5821
 HV5821|---------------------------------------------------------------------|
 HV5821| PID    Reference Object                     Distance      Geod. Az  |
 HV5821|                                                           dddmmss.s |
 HV5821| HV5822 BRIAN REF STA                        23.814 METERS 00532     |
 HV5821| HV5815 GREEN                               APPROX. 4.3 KM 1710006.6 |
 HV5821|---------------------------------------------------------------------|
 HV5821
 HV5821                          SUPERSEDED SURVEY CONTROL
 HV5821
 HV5821  NAD 83(1986)-  38 55 52.33542(N)    076 12 45.87932(W) AD(       ) 3
 HV5821  NAD 27      -  38 55 51.90800(N)    076 12 47.05300(W) AD(       ) 3
 HV5821  USSD        -  38 55 52.30500(N)    076 12 46.83400(W) AD(       ) 3
 HV5821  NGVD 29               0.00   (m)            0.0    (f) LEVELING    3  
 HV5821
 HV5821.Superseded values are not recommended for survey control.
 HV5821
 HV5821.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5821.See file dsdata.pdf to determine how the superseded data were derived.
 HV5821
 HV5821
 HV5821  HISTORY     - Date     Condition        Report By
 HV5821  HISTORY     - 1899     MONUMENTED       CGS
 HV5821  HISTORY     - 20151112 MARK NOT FOUND   NGS
 HV5821
 HV5821                          STATION DESCRIPTION
 HV5821
 HV5821'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (PAW)
 HV5821'STATION IS AT THE NORTHEASTERN PART OF EASTERN BAY, ON BRIAN
 HV5821'POINT, NEAR ENTRANCE TO HOG HOLE CREEK, AND ABOUT 100 FEET INSIDE
 HV5821'HIGH-WATER MARK, IN MARSHY GROUND.  MARKED BY A 6-INCH CEDAR POST,
 HV5821'ABOUT 4 FEET LONG, DRIVEN INTO THE MARSH WITH ABOUT 8 INCHES OF
 HV5821'POST LEFT PROTRUDING ABOVE GROUND.  FIVE COPPER NAILS DRIVEN INTO
 HV5821'TOP SURFACE OF POST IN FORM OF A SQUARE AND THE INTERSECTION OF
 HV5821'THE DIAGONALS THEREOF, MARK THE CENTER.
 HV5821
 HV5821                          STATION RECOVERY (2015)
 HV5821
 HV5821'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2015 (MRA)
 HV5821'THE MARK NOW PLOTS ABOUT 800 FT (243.8 M) OFFSHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5822 ***********************************************************************
 HV5822  DESIGNATION -  BRIAN REF STA
 HV5822  PID         -  HV5822
 HV5822  STATE/COUNTY-  MD/QUEEN ANNES
 HV5822  COUNTRY     -  US
 HV5822  USGS QUAD   -  QUEENSTOWN (2016)
 HV5822
 HV5822                         *CURRENT SURVEY CONTROL
 HV5822  ______________________________________________________________________
 HV5822* NAD 83(1991) POSITION- 38 55 53.10861(N) 076 12 45.77131(W)   ADJUSTED
 HV5822* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5822  ______________________________________________________________________
 HV5822  GEOID HEIGHT    -        -33.942 (meters)                     GEOID18
 HV5822  LAPLACE CORR    -         -4.57  (seconds)                    DEFLEC18
 HV5822  HORZ ORDER      -  THIRD
 HV5822
 HV5822.The horizontal coordinates were established by classical geodetic methods
 HV5822.and adjusted by the National Geodetic Survey in January 1992.
 HV5822
 HV5822.The orthometric height was scaled from a topographic map.
 HV5822
 HV5822.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5822.GEOID18 height accuracy estimate available here.
 HV5822
 HV5822.Click photographs - Photos may exist for this station.
 HV5822
 HV5822.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5822
 HV5822. The following values were computed from the NAD 83(1991) position.
 HV5822
 HV5822;                    North         East     Units Scale Factor Converg.
 HV5822;SPC MD       -   140,687.428   468,261.283   MT  0.99995032   +0 29 38.9
 HV5822;SPC MD       -   461,572.00  1,536,287.23   sFT  0.99995032   +0 29 38.9
 HV5822;UTM  18      - 4,309,865.215   394,885.980   MT  0.99973605   -0 45 43.7
 HV5822
 HV5822!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5822!SPC MD       -   1.00000536  x   0.99995032  =   0.99995568
 HV5822!UTM  18      -   1.00000536  x   0.99973605  =   0.99974141
 HV5822
 HV5822:                Primary Azimuth Mark                     Grid Az
 HV5822:SPC MD       -  GREEN                                    170 35 12.4
 HV5822:UTM  18      -  GREEN                                    171 50 35.0
 HV5822
 HV5822_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9488509865(NAD 83)
 HV5822
 HV5822|---------------------------------------------------------------------|
 HV5822| PID    Reference Object                     Distance      Geod. Az  |
 HV5822|                                                           dddmmss.s |
 HV5822| HV5815 GREEN                               APPROX. 4.3 KM 1710451.3 |
 HV5822|---------------------------------------------------------------------|
 HV5822
 HV5822                          SUPERSEDED SURVEY CONTROL
 HV5822
 HV5822  NAD 83(1986)-  38 55 53.10407(N)    076 12 45.78395(W) AD(       ) 3
 HV5822  NAD 27      -  38 55 52.68500(N)    076 12 46.96000(W) AD(       ) 3
 HV5822  USSD        -  38 55 53.08300(N)    076 12 46.74400(W) AD(       ) 3
 HV5822
 HV5822.Superseded values are not recommended for survey control.
 HV5822
 HV5822.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5822.See file dsdata.pdf to determine how the superseded data were derived.
 HV5822
 HV5822_MARKER: Z = SEE DESCRIPTION
 HV5822_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5822_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5822+STABILITY: SURFACE MOTION
 HV5822
 HV5822  HISTORY     - Date     Condition        Report By
 HV5822  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5822  HISTORY     - 1939     MARK NOT FOUND   CGS
 HV5822
 HV5822                          STATION DESCRIPTION
 HV5822
 HV5822'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5822'STATION IS ON THE EASTERN SHORE OF PROSPECT BAY, ON BRIAN POINT,
 HV5822'ABOUT 1 MILE SE OF PINEY POINT, 2 MILES NE OF PARSONS ISLAND, AND
 HV5822'3/8 MILE W OF ENTRANCE TO HOG HOLE CREEK, ON A MARSH POINT ABOUT 1
 HV5822'FOOT ABOVE HIGH WATER, 13 YARDS E OF EDGE OF MARSH, 14 YARDS NW OF
 HV5822'EDGE OF MARSH, 18 YARDS N OF EXTREME END OF POINT, AND 40 YARDS
 HV5822'SW OF A CULTIVATED FIELD.  STATION IS MARKED BY A HOLE IN THE
 HV5822'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5822'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5822'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5822'COUNTER-SUNK IN TOP OF POST.  DISTANCES AND BEARINGS TO VARIOUS
 HV5822'POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT TANGENT OF WOODS ON
 HV5822'PARSONS ISLAND, 2-1/4 MILES, S 56 DEG 38 MIN W.  MIDDLE CHIMNEY OF
 HV5822'LARGE BRICK HOUSE, 2-1/4 MILES, S 75 DEG 42 MIN W. CUPOLA ON BARN,
 HV5822'2-3/4 MILES, N 86 DEG 21 MIN W.  LEFT PEAK OF LARGE HOUSE, 2-5/8
 HV5822'MILES, N 76 DEG 47 MIN W.  NEAR PEAK OF HOUSE, 1/2 MILE, S 86 DEG
 HV5822'8 MIN E.  CHIMNEY OF HOUSE, 1-1/4 MILES, S 24 DEG 13 MIN E.  LEFT
 HV5822'TANGENT OF WOODS ON BENNETT POINT, 4 MILES, S 4 DEG 0 MIN E.
 HV5822
 HV5822                          STATION RECOVERY (1939)
 HV5822
 HV5822'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV5822'SEARCHED FOR BUT NOT FOUND, PROBABLY WASHED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4930 ***********************************************************************
 JV4930  DESIGNATION -  BRIAR
 JV4930  PID         -  JV4930
 JV4930  STATE/COUNTY-  MD/HARFORD
 JV4930  COUNTRY     -  US
 JV4930  USGS QUAD   -  PERRYMAN (2016)
 JV4930
 JV4930                         *CURRENT SURVEY CONTROL
 JV4930  ______________________________________________________________________
 JV4930* NAD 83(1991) POSITION- 39 22 39.16371(N) 076 13 04.54791(W)   ADJUSTED
 JV4930* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV4930  ______________________________________________________________________
 JV4930  GEOID HEIGHT    -        -33.264 (meters)                     GEOID18
 JV4930  LAPLACE CORR    -         -1.70  (seconds)                    DEFLEC18
 JV4930  HORZ ORDER      -  FIRST
 JV4930
 JV4930.The horizontal coordinates were established by classical geodetic methods
 JV4930.and adjusted by the National Geodetic Survey in January 1992.
 JV4930
 JV4930.The orthometric height was scaled from a topographic map.
 JV4930
 JV4930.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4930.GEOID18 height accuracy estimate available here.
 JV4930
 JV4930.Click photographs - Photos may exist for this station.
 JV4930
 JV4930.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4930
 JV4930. The following values were computed from the NAD 83(1991) position.
 JV4930
 JV4930;                    North         East     Units Scale Factor Converg.
 JV4930;SPC MD       -   190,208.204   467,384.778   MT  0.99998813   +0 29 27.1
 JV4930;SPC MD       -   624,041.42  1,533,411.56   sFT  0.99998813   +0 29 27.1
 JV4930;UTM  18      - 4,359,381.978   395,098.511   MT  0.99973549   -0 46 21.9
 JV4930
 JV4930!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4930!SPC MD       -   1.00000479  x   0.99998813  =   0.99999292
 JV4930!UTM  18      -   1.00000479  x   0.99973549  =   0.99974028
 JV4930
 JV4930:                Primary Azimuth Mark                     Grid Az
 JV4930:SPC MD       -  BRIAR AZ MK                              209 19 16.0
 JV4930:UTM  18      -  BRIAR AZ MK                              210 35 05.0
 JV4930
 JV4930_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9509859381(NAD 83)
 JV4930
 JV4930|---------------------------------------------------------------------|
 JV4930| PID    Reference Object                     Distance      Geod. Az  |
 JV4930|                                                           dddmmss.s |
 JV4930| CB1020 BRIAR RM 2                           24.352 METERS 00620     |
 JV4930| CB1018 BRIAR AZ MK                                        2094843.1 |
 JV4930| CB1019 BRIAR RM 1                           22.757 METERS 24334     |
 JV4930|---------------------------------------------------------------------|
 JV4930
 JV4930                          SUPERSEDED SURVEY CONTROL
 JV4930
 JV4930  NAD 83(1986)-  39 22 39.15728(N)    076 13 04.55515(W) AD(       ) 1
 JV4930  NAD 27      -  39 22 38.76600(N)    076 13 05.71900(W) AD(       ) 1
 JV4930
 JV4930.Superseded values are not recommended for survey control.
 JV4930
 JV4930.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4930.See file dsdata.pdf to determine how the superseded data were derived.
 JV4930
 JV4930_MARKER: DS = TRIANGULATION STATION DISK
 JV4930_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4930_STAMPING: BRIAR 1949
 JV4930_MARK LOGO: CGS
 JV4930_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4930+STABILITY: SURFACE MOTION
 JV4930
 JV4930  HISTORY     - Date     Condition        Report By
 JV4930  HISTORY     - 1949     MONUMENTED       CGS
 JV4930
 JV4930                          STATION DESCRIPTION
 JV4930
 JV4930'DESCRIBED BY COAST AND GEODETIC SURVEY 1949 (CAS)
 JV4930'STATION IS LOCATED ON THE ABERDEEN PROVING GROUNDS ON MONKS
 JV4930'ISLAND.  IT IS 50 FEET SOUTHEAST OF THE CENTER OF A BLACK TOP
 JV4930'ROAD AND 40 FEET NORTH OF A CONCRETE BUILDING.  THE MARK IS A
 JV4930'6 X 6 INCH CONCRETE POST PROJECTING 3 INCHES WITH A BRASS DISK
 JV4930'STAMPED BRIAR 1949.
 JV4930'
 JV4930'REFERENCE MARK NO. 1 IS 15 FEET SOUTH OF THE CENTER OF THE
 JV4930'ROAD.  THE MARK PROJECTS 8 INCHES AND THE DISK IS STAMPED BRIAR
 JV4930'NO 1 1949.
 JV4930'
 JV4930'REFERENCE MARK NO. 2 IS 105 FEET SOUTH OF THE CENTER OF THE
 JV4930'BLACK TOP ROAD.  THE MARK PROJECTS 3 INCHES AND THE DISK IS
 JV4930'STAMPED BRIAR NO 2 1949.
 JV4930'
 JV4930'THE AZIMUTH MARK IS 150 FEET EAST OF THE CENTER OF THE BLACK
 JV4930'TOP ROAD.  THE MARK PROJECTS 6 INCHES AND THE DISK IS STAMPED
 JV4930'BRIAR 1949.
 JV4930'
 JV4930'TO REACH THE STATION FROM GATE NO. 3 ON THE PROVING GROUNDS GO
 JV4930'WEST AND SOUTHWEST ON A PAVED ROAD FOR 4.5 MILES TO A CROSS ROAD,
 JV4930'TURN RIGHT AND GO WEST FOR 0.2 MILE, THEN TURN LEFT AND GO
 JV4930'SOUTHWEST FOR 7.1 MILES TO A T-ROAD LEFT, TURN LEFT AND GO
 JV4930'NORTHEAST FOR 0.15 MILE TO THE AZIMUTH MARK ON THE RIGHT AS
 JV4930'DESCRIBED, CONTINUE FOR 0.35 MILE TO THE STATION ON THE RIGHT AS
 JV4930'DESCRIBED.
 JV4930'
 JV4930'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8278 ***********************************************************************
 HV8278  DESIGNATION -  BRIARWOOD
 HV8278  PID         -  HV8278
 HV8278  STATE/COUNTY-  MD/CHARLES
 HV8278  COUNTRY     -  US
 HV8278  USGS QUAD   -  PISCATAWAY (2016)
 HV8278
 HV8278                         *CURRENT SURVEY CONTROL
 HV8278  ______________________________________________________________________
 HV8278* NAD 83(2011) POSITION- 38 38 54.81276(N) 076 57 15.67738(W)   ADJUSTED
 HV8278* NAD 83(2011) ELLIP HT-    31.030 (meters)        (06/27/12)   ADJUSTED
 HV8278* NAD 83(2011) EPOCH   -  2010.00
 HV8278* NAVD 88 ORTHO HEIGHT -    63.9   (meters)      210.    (feet) VERTCON3
 HV8278  ______________________________________________________________________
 HV8278  GEOID HEIGHT    -        -32.725 (meters)                     GEOID18
 HV8278  NAD 83(2011) X  -  1,125,884.696 (meters)                     COMP
 HV8278  NAD 83(2011) Y  - -4,859,078.193 (meters)                     COMP
 HV8278  NAD 83(2011) Z  -  3,961,941.563 (meters)                     COMP
 HV8278  LAPLACE CORR    -         -4.94  (seconds)                    DEFLEC18
 HV8278
 HV8278  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8278  Standards:
 HV8278         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8278            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8278  -------------------------------------------------------------------
 HV8278  NETWORK    1.67   2.59           0.45   0.79   1.32     -0.48639962
 HV8278  -------------------------------------------------------------------
 HV8278  Click here for local accuracies and other accuracy information.
 HV8278
 HV8278.The horizontal coordinates were established by GPS observations
 HV8278.and adjusted by the National Geodetic Survey in June 2012.
 HV8278
 HV8278.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8278.been affixed to the stable North American tectonic plate. See 
 HV8278.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8278
 HV8278.The horizontal coordinates are valid at the epoch date displayed above
 HV8278.which is a decimal equivalence of Year/Month/Day.
 HV8278
 HV8278.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8278.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8278
 HV8278.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8278.GEOID18 height accuracy estimate available here.
 HV8278
 HV8278.Click photographs - Photos may exist for this station.
 HV8278
 HV8278.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8278
 HV8278.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8278
 HV8278.The ellipsoidal height was determined by GPS observations
 HV8278.and is referenced to NAD 83.
 HV8278
 HV8278. The following values were computed from the NAD 83(2011) position.
 HV8278
 HV8278;                    North         East     Units Scale Factor Converg.
 HV8278;SPC MD       -   108,994.878   403,973.394   MT  0.99995767   +0 01 43.1
 HV8278;SPC MD       -   357,594.03  1,325,369.38   sFT  0.99995767   +0 01 43.1
 HV8278;UTM  18      - 4,279,589.910   329,927.688   MT  0.99995620   -1 13 15.1
 HV8278
 HV8278!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8278!SPC MD       -   0.99999513  x   0.99995767  =   0.99995280
 HV8278!UTM  18      -   0.99999513  x   0.99995620  =   0.99995133
 HV8278
 HV8278_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2992779589(NAD 83)
 HV8278
 HV8278                          SUPERSEDED SURVEY CONTROL
 HV8278
 HV8278  NAD 83(2007)-  38 38 54.81443(N)    076 57 15.68656(W) AD(2002.00) 0
 HV8278  ELLIP H (02/10/07)   31.045  (m)                       GP(2002.00)    
 HV8278  ELLIP H (09/18/02)   31.251  (m)                       GP(       ) 4 2
 HV8278  NAD 83(1993)-  38 38 54.81317(N)    076 57 15.67734(W) AD(       ) 2
 HV8278  ELLIP H (11/14/94)   31.040  (m)                       GP(       ) 4 2
 HV8278  NAD 83(1991)-  38 38 54.81302(N)    076 57 15.67847(W) AD(       ) 2
 HV8278  ELLIP H (01/27/92)   31.300  (m)                       GP(       ) 4 1
 HV8278  NAD 83(1986)-  38 38 54.81364(N)    076 57 15.69227(W) AD(       ) 2
 HV8278  NGVD 29 (04/21/89)   64.2    (m)  RAPSU86  model used  GPS OBS        
 HV8278
 HV8278.Superseded values are not recommended for survey control.
 HV8278
 HV8278.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8278.See file dsdata.pdf to determine how the superseded data were derived.
 HV8278
 HV8278_MARKER: DD = SURVEY DISK
 HV8278_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8278_STAMPING: BRIARWOOD 1988
 HV8278_MARK LOGO: MDSHA
 HV8278_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8278_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8278+STABILITY: SURFACE MOTION
 HV8278_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8278+SATELLITE: SATELLITE OBSERVATIONS - 1988
 HV8278
 HV8278  HISTORY     - Date     Condition        Report By
 HV8278  HISTORY     - 1988     MONUMENTED       MDSHA
 HV8278  HISTORY     - 20040408 MARK NOT FOUND   URS
 HV8278  HISTORY     - 20040413 MARK NOT FOUND   URS
 HV8278
 HV8278                          STATION DESCRIPTION
 HV8278
 HV8278'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1988
 HV8278'THE STATION IS LOCATED ABOUT 5.5 KM (3.40 MI) WEST-NORTHWEST OF
 HV8278'WALDORF, 0.8 KM (0.50 MI) SOUTH OF THE MATTAWOMAN CREEK, WHICH IS ALSO
 HV8278'THE PRINCE GEORGES-CHARLES COUNTY LINE AND IN THE SMALL SETTLEMENT OF
 HV8278'BRIARWOOD.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8278'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND STATE HIGHWAYS
 HV8278'5 AND 228 AT WALDORF, GO WESTERLY ON STATE HIGHWAY 228 FOR 4.95 KM
 HV8278'(3.10 MI) TO THE STATION ON THE RIGHT.
 HV8278'THE DISK IS SET IN THE TOP OF THE 0.3 M (1.0 FT) ROUND MONUMENT WHICH
 HV8278'IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 34.75 M (114.0 FT)
 HV8278'NORTH OF THE CENTER OF STATE HIGHWAY 228, 8.38 M (27.5 FT) EAST OF THE
 HV8278'CENTER OF IRONWOOD DRIVE, 13.11 M (43.0 FT) SOUTH OF THE CENTER OF A
 HV8278'DRIVE LEADING TO A HOUSE NUMBERED 500 IRONWOOD DRIVE AND 14.63 M
 HV8278'(48.0 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF THE HOUSE NUMBERED 500
 HV8278'IRONWOOD DRIVE.
 HV8278
 HV8278                          STATION RECOVERY (2004)
 HV8278
 HV8278'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 HV8278'MARK NOT FOUND.
 HV8278
 HV8278                          STATION RECOVERY (2004)
 HV8278
 HV8278'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 HV8278'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8901 ***********************************************************************
 HV8901  DESIGNATION -  BRIARWOOD AZ MK
 HV8901  PID         -  HV8901
 HV8901  STATE/COUNTY-  MD/CHARLES
 HV8901  COUNTRY     -  US
 HV8901  USGS QUAD   -  PISCATAWAY (2016)
 HV8901
 HV8901                         *CURRENT SURVEY CONTROL
 HV8901  ______________________________________________________________________
 HV8901* NAD 83(1993) POSITION- 38 39 04.93996(N) 076 57 14.78306(W)   NO CHECK
 HV8901* NAVD 88 ORTHO HEIGHT -    60.2   (meters)      198.    (feet) VERTCON3
 HV8901  ______________________________________________________________________
 HV8901  GEOID HEIGHT    -        -32.719 (meters)                     GEOID18
 HV8901  LAPLACE CORR    -         -4.91  (seconds)                    DEFLEC18
 HV8901  HORZ ORDER      -  THIRD
 HV8901
 HV8901.The horizontal coordinates were established by classical geodetic methods
 HV8901.and adjusted by the National Geodetic Survey in November 1994.
 HV8901
 HV8901.No horizontal observational check was made to the station.
 HV8901
 HV8901.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8901.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8901
 HV8901.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8901.GEOID18 height accuracy estimate available here.
 HV8901
 HV8901.Click photographs - Photos may exist for this station.
 HV8901
 HV8901.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8901
 HV8901. The following values were computed from the NAD 83(1993) position.
 HV8901
 HV8901;                    North         East     Units Scale Factor Converg.
 HV8901;SPC MD       -   109,307.156   403,994.863   MT  0.99995748   +0 01 43.7
 HV8901;SPC MD       -   358,618.56  1,325,439.81   sFT  0.99995748   +0 01 43.7
 HV8901;UTM  18      - 4,279,901.645   329,955.961   MT  0.99995608   -1 13 14.8
 HV8901
 HV8901!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8901!SPC MD       -   0.99999569  x   0.99995748  =   0.99995317
 HV8901!UTM  18      -   0.99999569  x   0.99995608  =   0.99995177
 HV8901
 HV8901_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2995579901(NAD 83)
 HV8901
 HV8901                          SUPERSEDED SURVEY CONTROL
 HV8901
 HV8901  NAD 83(1991)-  38 39 04.93981(N)    076 57 14.78419(W) AD(       ) 3
 HV8901  NAD 83(1986)-  38 39 04.94041(N)    076 57 14.79770(W) AD(       ) 3
 HV8901  NGVD 29 (02/12/91)   60.4    (m)          198.     (f) VERT ANG       
 HV8901
 HV8901.Superseded values are not recommended for survey control.
 HV8901
 HV8901.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8901.See file dsdata.pdf to determine how the superseded data were derived.
 HV8901
 HV8901_MARKER: DD = SURVEY DISK
 HV8901_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV8901_SP_SET: INLET
 HV8901_STAMPING: BRIARWOOD AZ MK 1988
 HV8901_MARK LOGO: MDSHA
 HV8901_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8901_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8901_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8901+SATELLITE: SATELLITE OBSERVATIONS - 1988
 HV8901
 HV8901  HISTORY     - Date     Condition        Report By
 HV8901  HISTORY     - 1988     MONUMENTED       MDSHA
 HV8901
 HV8901                          STATION DESCRIPTION
 HV8901
 HV8901'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1988
 HV8901'THE STATION IS LOCATED ABOUT 5.5 KM (3.40 MI) WEST-NORTHWEST OF
 HV8901'WALDORF, 0.5 KM (0.30 MI) SOUTH OF THE NATTAWOMAN CREEK WHICH IS ALSO
 HV8901'THE PRINCE GEORGES-CHARLES COUNTY LINE AND IN THE SMALL SETLEMENT OF
 HV8901'BRIARWOOD.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8901'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND STATE HIGHWAYS
 HV8901'5 AND 228 AT WALDORF.  GO WESTERLY ON STATE HIGHWAY 228 FOR 4.95 KM
 HV8901'(3.10 MI) TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO NORTH ON IRONWOOD
 HV8901'DRIVE FOR 0.35 KM (0.20 MI) TO THE MARK ON THE LEFT.
 HV8901'THE DISK IS SET IN A DRILL HOLE IN THE CONCRETE COVER FOR A DROP INLET
 HV8901'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 6.0 M (19.7 FT)
 HV8901'WEST OF THE CENTER OF IRONWOOD DRIVE, 18.29 M (60.0 FT) SOUTH OF THE
 HV8901'CENTER OF BRIARWOOD PLACE, 18.59 M (61.0 FT) SOUTH-SOUTHWEST OF A
 HV8901'MANHOLE NEAR THE CENTER OF THE INTERSECTION OF IRONWOOD DRIVE AND
 HV8901'BRIARWOOD PLACE, 14.48 M (47.5 FT) NORTHEAST OF THE NORTHEAST CORNER
 HV8901'OF A HOUSE NUMBERED 525 IRONWOOD DRIVE AND 0.76 M (2.5 FT) SOUTH OF
 HV8901'THE CENTER OF A MANHOLE IN THE CONCRETE COVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6382 ***********************************************************************
 HV6382  DESIGNATION -  BRICE
 HV6382  PID         -  HV6382
 HV6382  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6382  COUNTRY     -  US
 HV6382  USGS QUAD   -  ANNAPOLIS (2016)
 HV6382
 HV6382                         *CURRENT SURVEY CONTROL
 HV6382  ______________________________________________________________________
 HV6382* NAD 83(1991) POSITION- 38 59 40.86999(N) 076 29 06.36155(W)   ADJUSTED
 HV6382* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV6382  ______________________________________________________________________
 HV6382  GEOID HEIGHT    -        -33.329 (meters)                     GEOID18
 HV6382  LAPLACE CORR    -         -3.64  (seconds)                    DEFLEC18
 HV6382  HORZ ORDER      -  THIRD
 HV6382
 HV6382.The horizontal coordinates were established by classical geodetic methods
 HV6382.and adjusted by the National Geodetic Survey in January 1992.
 HV6382
 HV6382.The orthometric height was scaled from a topographic map.
 HV6382
 HV6382.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6382.GEOID18 height accuracy estimate available here.
 HV6382
 HV6382.Click photographs - Photos may exist for this station.
 HV6382
 HV6382.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6382
 HV6382. The following values were computed from the NAD 83(1991) position.
 HV6382
 HV6382;                    North         East     Units Scale Factor Converg.
 HV6382;SPC MD       -   147,542.106   444,604.856   MT  0.99995199   +0 19 23.4
 HV6382;SPC MD       -   484,061.06  1,458,674.43   sFT  0.99995199   +0 19 23.4
 HV6382;UTM  18      - 4,317,235.844   371,389.900   MT  0.99980367   -0 56 04.6
 HV6382
 HV6382!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6382!SPC MD       -   1.00000448  x   0.99995199  =   0.99995647
 HV6382!UTM  18      -   1.00000448  x   0.99980367  =   0.99980815
 HV6382
 HV6382:                Primary Azimuth Mark                     Grid Az
 HV6382:SPC MD       -  BLUFF                                    133 39 40.0
 HV6382:UTM  18      -  BLUFF                                    134 55 08.0
 HV6382
 HV6382_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7138917235(NAD 83)
 HV6382
 HV6382|---------------------------------------------------------------------|
 HV6382| PID    Reference Object                     Distance      Geod. Az  |
 HV6382|                                                           dddmmss.s |
 HV6382| HV6369 ANNAPOLIS GAB BETWEEN CHIMNEYS      APPROX. 0.5 KM 0410937.1 |
 HV6382| HV6390 ANNAPOLIS WINDMILL                  APPROX. 0.7 KM 1184657.1 |
 HV6382| HV6372 ANNAPOLIS SIGNBOARD CENTER          APPROX. 0.7 KM 1293858.1 |
 HV6382| HV6385 BLUFF                               APPROX. 1.3 KM 1335903.4 |
 HV6382| HV6389 ANNAPOLIS EXPER STA OUT VENT        APPROX. 1.7 KM 1345755.3 |
 HV6382| HV6371 ANNAPOLIS METEOROLOGICAL POLE       APPROX. 1.5 KM 1601230.6 |
 HV6382| HV6370 ANNAPOLIS GYMNASIUM NE CORNER       APPROX. 1.4 KM 1645134.9 |
 HV6382| HV6377 BANCROFT HALL NORTH CUPOLA          APPROX. 1.4 KM 1723657.4 |
 HV6382| HV6380 ANNAPOLIS MIDSHIP QTRS S CUP        APPROX. 1.5 KM 1754714.8 |
 HV6382| HV6381 ANNAPOLIS POWERHOUSE STACK          APPROX. 1.1 KM 1803517.1 |
 HV6382| HV6384 ANNAPOLIS POWERHOUSE NW CORNER      APPROX. 1.0 KM 1814018.5 |
 HV6382| HV6395 ANNAPOLIS NAVAL ACAD CHAPEL         APPROX. 1.5 KM 1842152.4 |
 HV6382| HV6383 ANNAPOLIS CLOCK TOWER               APPROX. 1.2 KM 1865429.0 |
 HV6382| HV6393 ANNAPOLIS ST CAPITOL BLDG DOME      APPROX. 1.8 KM 1955010.2 |
 HV6382| HV6328 ST JOHNS COLLEGE                    APPROX. 1.6 KM 2002856.8 |
 HV6382| HV6392 ANNAPOLIS ST ANNS EPIS SPIRE        APPROX. 1.9 KM 2004112.7 |
 HV6382| HV6379 ANNAPOLIS NAVAL SIGNAL              APPROX. 0.9 KM 2024118.8 |
 HV6382| HV6373 ANNAPOLIS NAVAL HOSP CUPOLA         APPROX. 0.8 KM 2204741.6 |
 HV6382| HV6343 ANNAPOLIS ACAD GRAD SCH ROOF        APPROX. 1.2 KM 2342946.0 |
 HV6382| JV5234 DRAWBRIDGE RR CEN N END DRAW        APPROX. 1.1 KM 3195050.9 |
 HV6382| JV5191 WHITE HOUSE SOUTH GABLE             APPROX. 1.3 KM 3295203.2 |
 HV6382| JV5195 MANSION GABLE OVER COLUMNS          APPROX. 1.6 KM 3332200.2 |
 HV6382|---------------------------------------------------------------------|
 HV6382
 HV6382                          SUPERSEDED SURVEY CONTROL
 HV6382
 HV6382  NAD 83(1986)-  38 59 40.86617(N)    076 29 06.37284(W) AD(       ) 3
 HV6382  NAD 27      -  38 59 40.46400(N)    076 29 07.51400(W) AD(       ) 3
 HV6382  USSD        -  38 59 40.83000(N)    076 29 07.35800(W) AD(       ) 3
 HV6382
 HV6382.Superseded values are not recommended for survey control.
 HV6382
 HV6382.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6382.See file dsdata.pdf to determine how the superseded data were derived.
 HV6382
 HV6382_STAMPING: M.S.F.C.  U.S.C.S.
 HV6382_MARK LOGO: MDSFC
 HV6382_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6382
 HV6382  HISTORY     - Date     Condition        Report By
 HV6382  HISTORY     - 1903     MONUMENTED       MDSFC
 HV6382  HISTORY     - 1910     GOOD             CGS
 HV6382  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6382
 HV6382                          STATION DESCRIPTION
 HV6382
 HV6382'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV6382'ON THE NE SHORE OF SEVERN RIVER, ON BRICE POINT, NEAR NE END OF
 HV6382'COUNTY BRIDGE 9 YARDS N OF CENTER OF COUNTY ROAD, 25 YARDS W OF
 HV6382'SMALL POND, AND 3 FEET ABOVE AND 75 FEET BACK FROM HIGH-WATER
 HV6382'MARK.  STATION MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6382'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6382'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.
 HV6382'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6382'POST.  DISTANCES AND BEARINGS FROM THE STATION TO VARIOUS
 HV6382'POINTS OF REFERENCE ARE AS FOLLOWS--CHAPEL DOME, NAVAL ACADEMY,
 HV6382'1/2 MILE, S 4 DEG 22 MIN W.  STATEHOUSE DOME, 3/4 MILE, S 15 DEG
 HV6382'50 MIN W.  LOWEST BOLT HEAD IN END POST OF GROUND RAIL ON
 HV6382'COUNTY BRIDGE, 15.40 METERS (50.5 FEET), S 19 DEG 23 MIN W.
 HV6382'CHIMNEY ON BRIDGE TENDERS HOUSE, 1/4 MILE, S 55 DEG 17 MIN W.
 HV6382'S CHIMNEY OF YELLOW HOUSE, 3/4 MILE, N 68 DEG 11 MIN W.
 HV6382'CHIMNEY ON SLATE-COVERED HOUSE, 1/2 MILE, N 35 DEG 43 MIN W.  N
 HV6382'CHIMNEY OF YELLOW HOUSE, 1/2 MILE, N 26 DEG 35 MIN W.  NAIL IN
 HV6382'BLAZE IN 4-INCH LOCUST TREE, 10.89 METERS (35.7 FEET), N 17
 HV6382'DEG 46 MIN W.  W CHIMNEY OF HOUSE, 1/4 MILE, N 41 DEG 16 MIN E.
 HV6382'NAIL IN BLAZE IN 4-INCH LOCUST STUMP, 4.29 METERS (14.07 FEET),
 HV6382'S 66 DEG 38 MIN E.
 HV6382
 HV6382                          STATION RECOVERY (1932)
 HV6382
 HV6382'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6382'STATION IS LOST.  THE EMBANKMENT FOR THE NEW COUNTY BRIDGE COVERS
 HV6382'THE LOCATION OF THE OLD STATION.  IT IS ABOUT 25 FEET ABOVE THE
 HV6382'FORMER LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6204 ***********************************************************************
 DN6204  DESIGNATION -  BRICK HILL
 DN6204  PID         -  DN6204
 DN6204  STATE/COUNTY-  MD/CECIL
 DN6204  COUNTRY     -  US
 DN6204  USGS QUAD   -  BAY VIEW (2016)
 DN6204
 DN6204                         *CURRENT SURVEY CONTROL
 DN6204  ______________________________________________________________________
 DN6204* NAD 83(2011) POSITION- 39 42 55.33088(N) 075 52 41.72566(W)   ADJUSTED
 DN6204* NAD 83(2011) ELLIP HT-    88.849 (meters)        (06/27/12)   ADJUSTED
 DN6204* NAD 83(2011) EPOCH   -  2010.00
 DN6204* NAVD 88 ORTHO HEIGHT -   121.87  (meters)      399.8   (feet) LEVELING
 DN6204  ______________________________________________________________________
 DN6204  GEOID HEIGHT    -        -33.012 (meters)                     GEOID18
 DN6204  NAD 83(2011) X  -  1,198,695.969 (meters)                     COMP
 DN6204  NAD 83(2011) Y  - -4,764,555.545 (meters)                     COMP
 DN6204  NAD 83(2011) Z  -  4,053,782.651 (meters)                     COMP
 DN6204  LAPLACE CORR    -          0.64  (seconds)                    DEFLEC18
 DN6204  VERT ORDER      -  THIRD ?
 DN6204
 DN6204  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6204  Standards:
 DN6204         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6204            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6204  -------------------------------------------------------------------
 DN6204  NETWORK    0.64   1.33           0.29   0.22   0.68      0.01257068
 DN6204  -------------------------------------------------------------------
 DN6204  Click here for local accuracies and other accuracy information.
 DN6204
 DN6204.The horizontal coordinates were established by GPS observations
 DN6204.and adjusted by the National Geodetic Survey in June 2012.
 DN6204
 DN6204.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6204.been affixed to the stable North American tectonic plate. See 
 DN6204.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6204
 DN6204.The horizontal coordinates are valid at the epoch date displayed above
 DN6204.which is a decimal equivalence of Year/Month/Day.
 DN6204
 DN6204.The orthometric height was determined by differential leveling.
 DN6204.The vertical network tie was performed by a horz. field party for horz.
 DN6204.obs reductions. Reset procedures were used to establish the elevation.
 DN6204
 DN6204.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6204.GEOID18 height accuracy estimate available here.
 DN6204
 DN6204.Click photographs - Photos may exist for this station.
 DN6204
 DN6204.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6204
 DN6204.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6204
 DN6204.The ellipsoidal height was determined by GPS observations
 DN6204.and is referenced to NAD 83.
 DN6204
 DN6204. The following values were computed from the NAD 83(2011) position.
 DN6204
 DN6204;                    North         East     Units Scale Factor Converg.
 DN6204;SPC MD       -   228,018.539   496,189.564   MT  1.00005721   +0 42 14.6
 DN6204;SPC MD       -   748,090.82  1,627,915.26   sFT  1.00005721   +0 42 14.6
 DN6204;UTM  18      - 4,396,535.490   424,721.352   MT  0.99966977   -0 33 40.4
 DN6204
 DN6204!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6204!SPC MD       -   0.99998606  x   1.00005721  =   1.00004327
 DN6204!UTM  18      -   0.99998606  x   0.99966977  =   0.99965584
 DN6204
 DN6204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2472196535(NAD 83)
 DN6204
 DN6204                          SUPERSEDED SURVEY CONTROL
 DN6204
 DN6204  NAD 83(2007)-  39 42 55.33108(N)    075 52 41.72641(W) AD(2002.00) 1
 DN6204  ELLIP H (02/23/12)   88.876  (m)                       GP(2002.00) 4 1
 DN6204
 DN6204.Superseded values are not recommended for survey control.
 DN6204
 DN6204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6204.See file dsdata.pdf to determine how the superseded data were derived.
 DN6204
 DN6204_MARKER: DD = SURVEY DISK
 DN6204_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6204_STAMPING: BRICK HILL 2008
 DN6204_MARK LOGO: MD-015
 DN6204_PROJECTION: FLUSH
 DN6204_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6204_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6204+STABILITY: SURFACE MOTION
 DN6204_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6204+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6204
 DN6204  HISTORY     - Date     Condition        Report By
 DN6204  HISTORY     - 20081204 MONUMENTED       GWS
 DN6204  HISTORY     - 20250916 GOOD             PROFLN
 DN6204
 DN6204                          STATION DESCRIPTION
 DN6204
 DN6204'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6204'THE STATION IS LOCATED 1.0 MI (1.6 KM) NORTHWEST OF FAIR HILL.
 DN6204'
 DN6204'TO REACH THE STATION FROM THE JUNCTION OF TELEGRAPH ROAD (ROUTE 273)
 DN6204'AND LEWISVILLE ROAD (ROUTE 213), PROCEED NORTH ON LEWISVILLE ROAD FOR
 DN6204'1.03 MI (1.7 KM) TO A Y-FORK.  BEAR LEFT AND GO WEST ON BRICK HILL
 DN6204'ROAD FOR 0.11 MI (0.2 KM) CROSSING ROCK CHURCH ROAD, TO THE STATION ON
 DN6204'THE LEFT.
 DN6204'
 DN6204'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6204'CONCRETE MONUMENT, APPROXIMATELY 78 FT (23.8 M) WEST OF ROCK CHURCH
 DN6204'ROAD, 4.6 FT (1.4 M) SOUTH OF THE EDGE OF PAVING OF BRICK HILL ROAD,
 DN6204'48.7 FT (14.8 M) NORTHEAST OF A WELL (CE-88-0128) AND 70 FT (21.3 M)
 DN6204'SOUTHEAST OF THE CENTERLINE OF THE DRIVEWAY AT 48 BRICK HILL ROAD.
 DN6204
 DN6204                          STATION RECOVERY (2025)
 DN6204
 DN6204'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6204'THE MARK IS 89 FT (27.1 M) WEST OF ROCK CHURCH ROAD, 49 FT (14.9 M)
 DN6204'WEST-NORTHWEST OF A WELL CASING, 15 FT (4.6 M) SOUTH OF BRICK HILL
 DN6204'ROAD, 7 FT (2.1 M) EAST OF THE EAST LINE EXTENDED OF HOUSE 48 - BRICK
 DN6204'AND GREEN SIDING 1-STORY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1462 ***********************************************************************
 JV1462  DESIGNATION -  BRICK STEP
 JV1462  PID         -  JV1462
 JV1462  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1462  COUNTRY     -  US
 JV1462  USGS QUAD   -  BELTSVILLE (2016)
 JV1462
 JV1462                         *CURRENT SURVEY CONTROL
 JV1462  ______________________________________________________________________
 JV1462* NAD 83(1986) POSITION- 39 00 50.     (N) 076 55 40.     (W)   SCALED
 JV1462* NAVD 88 ORTHO HEIGHT -    54.361 (meters)      178.35  (feet) ADJUSTED
 JV1462  ______________________________________________________________________
 JV1462  GEOID HEIGHT    -        -32.129 (meters)                     GEOID18
 JV1462  DYNAMIC HEIGHT  -         54.332 (meters)      178.25  (feet) COMP
 JV1462  MODELED GRAVITY -    980,106.0   (mgal)                       NAVD 88
 JV1462
 JV1462  VERT ORDER      -  SECOND    CLASS 0
 JV1462
 JV1462.The horizontal coordinates were scaled from a map and have
 JV1462.an estimated accuracy of +/- 6 seconds.
 JV1462
 JV1462.The orthometric height was determined by differential leveling and
 JV1462.adjusted by the NATIONAL GEODETIC SURVEY
 JV1462.in June 1991.
 JV1462
 JV1462.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1462.GEOID18 height accuracy estimate available here.
 JV1462
 JV1462.Click photographs - Photos may exist for this station.
 JV1462
 JV1462.The dynamic height is computed by dividing the NAVD 88
 JV1462.geopotential number by the normal gravity value computed on the
 JV1462.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1462.degrees latitude (g = 980.6199 gals.).
 JV1462
 JV1462.The modeled gravity was interpolated from observed gravity values.
 JV1462
 JV1462;                    North         East    Units  Estimated Accuracy
 JV1462;SPC MD       -   149,550.      406,260.      MT  (+/- 180 meters Scaled)
 JV1462
 JV1462_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ330200(NAD 83)
 JV1462
 JV1462                          SUPERSEDED SURVEY CONTROL
 JV1462
 JV1462  NGVD 29 (11/26/84)   54.581  (m)          179.07   (f) ADJUSTED    2 0
 JV1462
 JV1462.Superseded values are not recommended for survey control.
 JV1462
 JV1462.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1462.See file dsdata.pdf to determine how the superseded data were derived.
 JV1462
 JV1462_MARKER: Z = SEE DESCRIPTION
 JV1462_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1462_SP_SET: STEP
 JV1462_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1462
 JV1462  HISTORY     - Date     Condition        Report By
 JV1462  HISTORY     - UNK      MONUMENTED       CGS
 JV1462  HISTORY     - 1952     GOOD             CGS
 JV1462
 JV1462                          STATION DESCRIPTION
 JV1462
 JV1462'DESCRIBED BY COAST AND GEODETIC SURVEY 1952
 JV1462'AT HOLLYWOOD.
 JV1462'AT HOLLYWOOD, PRINCE GEORGES, COUNTY, AT THE INTERSECTION OF
 JV1462'CHERRY HILL ROAD AND BALTIMORE BOULEVARD (U.S. HIGHWAY 1) AND
 JV1462'AT THE CORBIN AND DOBSON PRECISION WORKS INC. SHOP.  THE NORTHEAST
 JV1462'CORNER OF THE LOWEST EAST FRONT BRICK STEP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1011 ***********************************************************************
 JV1011  DESIGNATION -  BRIDGE
 JV1011  PID         -  JV1011
 JV1011  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1011  COUNTRY     -  US
 JV1011  USGS QUAD   -  ODENTON (2016)
 JV1011
 JV1011                         *CURRENT SURVEY CONTROL
 JV1011  ______________________________________________________________________
 JV1011* NAD 83(1986) POSITION- 39 05 22.     (N) 076 44 19.     (W)   SCALED
 JV1011* NAVD 88 ORTHO HEIGHT -    39.906 (meters)      130.92  (feet) ADJUSTED
 JV1011  ______________________________________________________________________
 JV1011  GEOID HEIGHT    -        -32.566 (meters)                     GEOID18
 JV1011  DYNAMIC HEIGHT  -         39.884 (meters)      130.85  (feet) COMP
 JV1011  MODELED GRAVITY -    980,086.2   (mgal)                       NAVD 88
 JV1011
 JV1011  VERT ORDER      -  FIRST     CLASS II
 JV1011
 JV1011.The horizontal coordinates were scaled from a map and have
 JV1011.an estimated accuracy of +/- 6 seconds.
 JV1011
 JV1011.The orthometric height was determined by differential leveling and
 JV1011.adjusted by the NATIONAL GEODETIC SURVEY
 JV1011.in June 1991.
 JV1011
 JV1011.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1011.GEOID18 height accuracy estimate available here.
 JV1011
 JV1011.Click photographs - Photos may exist for this station.
 JV1011
 JV1011.The dynamic height is computed by dividing the NAVD 88
 JV1011.geopotential number by the normal gravity value computed on the
 JV1011.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1011.degrees latitude (g = 980.6199 gals.).
 JV1011
 JV1011.The modeled gravity was interpolated from observed gravity values.
 JV1011
 JV1011;                    North         East    Units  Estimated Accuracy
 JV1011;SPC MD       -   157,970.      422,610.      MT  (+/- 180 meters Scaled)
 JV1011
 JV1011_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ496281(NAD 83)
 JV1011
 JV1011                          SUPERSEDED SURVEY CONTROL
 JV1011
 JV1011  NGVD 29 (11/26/84)   40.132  (m)          131.67   (f) ADJUSTED    1 2
 JV1011
 JV1011.Superseded values are not recommended for survey control.
 JV1011
 JV1011.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1011.See file dsdata.pdf to determine how the superseded data were derived.
 JV1011
 JV1011_MARKER: Q = CHISELED SQUARE
 JV1011_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1011_SP_SET: BRIDGE ABUTMENT
 JV1011_MARK LOGO: DOD
 JV1011_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1011
 JV1011  HISTORY     - Date     Condition        Report By
 JV1011  HISTORY     - UNK      MONUMENTED       USACE
 JV1011  HISTORY     - 1941     GOOD             CGS
 JV1011
 JV1011                          STATION DESCRIPTION
 JV1011
 JV1011'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1011'AT FORT GEORGE G. MEADE, ANNE ARUNDEL COUNTY, ON THE BALTIMORE
 JV1011'AND OHIO RAILROAD, ABOUT 0.2 MILE WEST OF THE RAILWAY STATION,
 JV1011'AT THE BRIDGE OVER MIDWAY BRANCH, ON THE TOP OF THE SOUTH END OF
 JV1011'THE EAST STONE ABUTMENT, 5.5 FEET SOUTH OF THE SOUTH RAIL, AND
 JV1011'ABOUT 2.1 FEET LOWER THAN THE TOP OF THE RAIL.  A CHISELED
 JV1011'SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5812 ***********************************************************************
 HV5812  DESIGNATION -  BRIDGE
 HV5812  PID         -  HV5812
 HV5812  STATE/COUNTY-  MD/QUEEN ANNES
 HV5812  COUNTRY     -  US
 HV5812  USGS QUAD   -  QUEENSTOWN (2016)
 HV5812
 HV5812                         *CURRENT SURVEY CONTROL
 HV5812  ______________________________________________________________________
 HV5812* NAD 83(1991) POSITION- 38 58 13.41961(N) 076 14 54.80620(W)   ADJUSTED
 HV5812* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5812  ______________________________________________________________________
 HV5812  GEOID HEIGHT    -        -33.724 (meters)                     GEOID18
 HV5812  LAPLACE CORR    -         -3.80  (seconds)                    DEFLEC18
 HV5812  HORZ ORDER      -  THIRD
 HV5812
 HV5812.The horizontal coordinates were established by classical geodetic methods
 HV5812.and adjusted by the National Geodetic Survey in January 1992.
 HV5812
 HV5812.The orthometric height was scaled from a topographic map.
 HV5812
 HV5812.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5812.GEOID18 height accuracy estimate available here.
 HV5812
 HV5812.Click photographs - Photos may exist for this station.
 HV5812
 HV5812.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5812
 HV5812. The following values were computed from the NAD 83(1991) position.
 HV5812
 HV5812;                    North         East     Units Scale Factor Converg.
 HV5812;SPC MD       -   144,987.700   465,117.986   MT  0.99995121   +0 28 17.9
 HV5812;SPC MD       -   475,680.48  1,525,974.59   sFT  0.99995121   +0 28 17.9
 HV5812;UTM  18      - 4,314,232.464   391,838.387   MT  0.99974405   -0 47 07.1
 HV5812
 HV5812!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5812!SPC MD       -   1.00000533  x   0.99995121  =   0.99995654
 HV5812!UTM  18      -   1.00000533  x   0.99974405  =   0.99974938
 HV5812
 HV5812:                Primary Azimuth Mark                     Grid Az
 HV5812:SPC MD       -  THIN                                     019 17 30.6
 HV5812:UTM  18      -  THIN                                     020 32 55.6
 HV5812
 HV5812_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9183814232(NAD 83)
 HV5812
 HV5812|---------------------------------------------------------------------|
 HV5812| PID    Reference Object                     Distance      Geod. Az  |
 HV5812|                                                           dddmmss.s |
 HV5812| HV5767 THIN                                APPROX. 1.2 KM 0194548.5 |
 HV5812|---------------------------------------------------------------------|
 HV5812
 HV5812                          SUPERSEDED SURVEY CONTROL
 HV5812
 HV5812  NAD 83(1986)-  38 58 13.41507(N)    076 14 54.81838(W) AD(       ) 3
 HV5812  NAD 27      -  38 58 13.01200(N)    076 14 55.98700(W) AD(       ) 3
 HV5812  USSD        -  38 58 13.37000(N)    076 14 55.77300(W) AD(       ) 3
 HV5812
 HV5812.Superseded values are not recommended for survey control.
 HV5812
 HV5812.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5812.See file dsdata.pdf to determine how the superseded data were derived.
 HV5812
 HV5812_MARKER: Z = SEE DESCRIPTION
 HV5812_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5812
 HV5812  HISTORY     - Date     Condition        Report By
 HV5812  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5812  HISTORY     - 20000111 MARK NOT FOUND   USPSQD
 HV5812  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV5812
 HV5812                          STATION DESCRIPTION
 HV5812
 HV5812'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5812'STATION IS ON THE SOUTHERN SIDE OF CHESTER RIVER, ON WESTERN
 HV5812'SHORE OF KENT NARROWS AND ABOUT 1/8 MILE W OF NARROWS RAILWAY
 HV5812'STATION.  STATION IS A SMALL STAFF NAILED ON A TELEGRAPH POLE AT A
 HV5812'POINT 25 FEET ABOVE HIGH WATER, 4 YARDS S OF NEAR RAIL OF
 HV5812'RAILROAD, 8 YARDS W OF END OF RAILROAD BRIDGE, AND 7 YARDS FROM
 HV5812'TIE LINE OF BRIDGE.
 HV5812
 HV5812                          STATION RECOVERY (2000)
 HV5812
 HV5812'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 HV5812'REFERENCED ROALROAD BRIDGE, STATION AND POLES DO NOT EXIST.
 HV5812'RIGHT-OF-WAY COVERED BY ACCESS ROAD TO COUNTY OWNED DOCKAGE.
 HV5812'EXTENSIVE ROAD AND HIGHWAY BRIDGE RECONSTRUCTION IN AREA SINCE 1971.
 HV5812'SHOULD BE CONSIDERED AS A DESTROYED MARK.
 HV5812
 HV5812                          STATION RECOVERY (2001)
 HV5812
 HV5812'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV5812'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6374 ***********************************************************************
 HV6374  DESIGNATION -  BRIDGE
 HV6374  PID         -  HV6374
 HV6374  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6374  COUNTRY     -  US
 HV6374  USGS QUAD   -  ANNAPOLIS (2016)
 HV6374
 HV6374                         *CURRENT SURVEY CONTROL
 HV6374  ______________________________________________________________________
 HV6374* NAD 83(1991) POSITION- 38 59 29.45394(N) 076 29 30.45033(W)   ADJUSTED
 HV6374* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6374  ______________________________________________________________________
 HV6374  GEOID HEIGHT    -        -33.321 (meters)                     GEOID18
 HV6374  LAPLACE CORR    -         -3.85  (seconds)                    DEFLEC18
 HV6374  HORZ ORDER      -  THIRD
 HV6374
 HV6374.The horizontal coordinates were established by classical geodetic methods
 HV6374.and adjusted by the National Geodetic Survey in January 1992.
 HV6374
 HV6374.The orthometric height was scaled from a topographic map.
 HV6374
 HV6374.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6374.GEOID18 height accuracy estimate available here.
 HV6374
 HV6374.Click photographs - Photos may exist for this station.
 HV6374
 HV6374.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6374
 HV6374. The following values were computed from the NAD 83(1991) position.
 HV6374
 HV6374;                    North         East     Units Scale Factor Converg.
 HV6374;SPC MD       -   147,186.837   444,027.164   MT  0.99995188   +0 19 08.3
 HV6374;SPC MD       -   482,895.48  1,456,779.12   sFT  0.99995188   +0 19 08.3
 HV6374;UTM  18      - 4,316,893.392   370,804.635   MT  0.99980553   -0 56 19.6
 HV6374
 HV6374!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6374!SPC MD       -   1.00000480  x   0.99995188  =   0.99995668
 HV6374!UTM  18      -   1.00000480  x   0.99980553  =   0.99981032
 HV6374
 HV6374:                Primary Azimuth Mark                     Grid Az
 HV6374:SPC MD       -  ANNAPOLIS NAV ACAD BOATHSE FP            138 14 57.0
 HV6374:UTM  18      -  ANNAPOLIS NAV ACAD BOATHSE FP            139 30 24.9
 HV6374
 HV6374_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7080416893(NAD 83)
 HV6374
 HV6374|---------------------------------------------------------------------|
 HV6374| PID    Reference Object                     Distance      Geod. Az  |
 HV6374|                                                           dddmmss.s |
 HV6374| HV6369 ANNAPOLIS GAB BETWEEN CHIMNEYS      APPROX. 1.2 KM 0510525.9 |
 HV6374| CX3708 S STOVE PIPE ON BRDG TENDER                        0785451.3 |
 HV6374| HV6372 ANNAPOLIS SIGNBOARD CENTER          APPROX. 1.1 KM 0951030.0 |
 HV6374| HV6375 ANNAPOLIS NAV ACAD BOATHSE FP       APPROX. 1.3 KM 1383405.3 |
 HV6374| CX2119 BRIDGE RM                            28.821 METERS 14411     |
 HV6374| HV6383 ANNAPOLIS CLOCK TOWER               APPROX. 1.0 KM 1524559.7 |
 HV6374| HV6373 ANNAPOLIS NAVAL HOSP CUPOLA         289.000 METERS 17430     |
 HV6374| HV6345 FIELD RESET                         APPROX. 0.5 KM 3421217.4 |
 HV6374| JV5234 DRAWBRIDGE RR CEN N END DRAW        APPROX. 1.2 KM 3525942.8 |
 HV6374| JV5195 MANSION GABLE OVER COLUMNS          APPROX. 1.7 KM 3561007.8 |
 HV6374| JV5191 WHITE HOUSE SOUTH GABLE             APPROX. 1.5 KM 3571627.8 |
 HV6374|---------------------------------------------------------------------|
 HV6374
 HV6374                          SUPERSEDED SURVEY CONTROL
 HV6374
 HV6374  NAD 83(1986)-  38 59 29.45014(N)    076 29 30.46163(W) AD(       ) 3
 HV6374  NAD 27      -  38 59 29.04800(N)    076 29 31.60200(W) AD(       ) 3
 HV6374  USSD        -  38 59 29.41300(N)    076 29 31.44500(W) AD(       ) 3
 HV6374
 HV6374.Superseded values are not recommended for survey control.
 HV6374
 HV6374.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6374.See file dsdata.pdf to determine how the superseded data were derived.
 HV6374
 HV6374
 HV6374  HISTORY     - Date     Condition        Report By
 HV6374  HISTORY     - 1903     MONUMENTED       CGS
 HV6374  HISTORY     - 1910     GOOD             CGS
 HV6374  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6374
 HV6374                          STATION DESCRIPTION
 HV6374
 HV6374'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV6374'ON THE SW SHORE OF THE SEVERN RIVER, ON NARROW BELT OF SANDY GRASSY
 HV6374'GROUND, 30 METERS ABOVE THE HEDGE ON N SIDE OF ROAD LEADING TO
 HV6374'COUNTY BRIDGE OVER THE SEVERN RIVER, 3.6 METERS (11.8 FEET)
 HV6374'BACK FROM HIGH WATER, AND 6.26 METERS (20.54 FEET) SW OF THE
 HV6374'DITCH ENTERING THE RIVER AND DRAINING SMALL SWAMP IN THE
 HV6374'REAR.  MARKED BY A 4-INCH SEWER TILE, CENTERED BY A PINE STUB,
 HV6374'WITH A NAIL IN THE TOP TO MARK EXACT POINT.  REFERENCE MARK IS
 HV6374'A 4-INCH VITRIFIED TILE SET IN CEMENT LARGE END DOWN, CLOSE TO
 HV6374'THE FIELD SIDE OF THE N HEDGE ALONG ROAD, CENTERED BY A SPIKE
 HV6374'ABOUT 1 INCH ABOVE GROUND, AND DISTANT 28.82 METERS (94.6 FEET),
 HV6374'S 35 DEG 49 MIN E.  SUB-SURFACE MARK IS NOZZLE OF
 HV6374'BOTTLE.  DISTANCES AND BEARINGS TO OTHER POINTS OF
 HV6374'REFERENCE ARE AS FOLLOWS--BIG CHESTNUT TREE ABOUT 100 METERS,
 HV6374'S 10 DEG 28 MIN W.  SOUTHERN STOVEPIPE ON ROOF OF BRIDGE
 HV6374'TENDERS HOUSE, ABOUT 90 METERS, N 78 DEG 55 MIN E.
 HV6374
 HV6374                          STATION RECOVERY (1932)
 HV6374
 HV6374'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6374'STATION IS LOST.  A FILL WAS MADE AT THIS LOCATION FOR THE
 HV6374'APPROACH TO THE NEW COUNTY BRIDGE AND FOR IMPROVEMENT OF THE
 HV6374'GROUNDS OF THE NAVAL ACADEMY GOLF CLUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7093 ***********************************************************************
 HV7093  DESIGNATION -  BRIDGE
 HV7093  PID         -  HV7093
 HV7093  STATE/COUNTY-  MD/CHARLES
 HV7093  COUNTRY     -  US
 HV7093  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7093
 HV7093                         *CURRENT SURVEY CONTROL
 HV7093  ______________________________________________________________________
 HV7093* NAD 83(1993) POSITION- 38 21 45.02991(N) 076 59 26.46777(W)   ADJUSTED
 HV7093  ______________________________________________________________________
 HV7093  GEOID HEIGHT    -        -33.398 (meters)                     GEOID18
 HV7093  LAPLACE CORR    -         -4.11  (seconds)                    DEFLEC18
 HV7093  HORZ ORDER      -  THIRD
 HV7093
 HV7093.The horizontal coordinates were established by classical geodetic methods
 HV7093.and adjusted by the National Geodetic Survey in November 1994.
 HV7093
 HV7093.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7093.GEOID18 height accuracy estimate available here.
 HV7093
 HV7093.Click photographs - Photos may exist for this station.
 HV7093
 HV7093.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7093
 HV7093. The following values were computed from the NAD 83(1993) position.
 HV7093
 HV7093;                    North         East     Units Scale Factor Converg.
 HV7093;SPC MD       -    77,241.454   400,814.064   MT  0.99998971   +0 00 21.0
 HV7093;SPC MD       -   253,416.34  1,315,004.14   sFT  0.99998971   +0 00 21.0
 HV7093;SPC VA N     - 2,078,321.192 3,631,900.129   MT  0.99995823   +0 56 31.2
 HV7093;SPC VA N     - 6,818,625.44 11,915,659.01   sFT  0.99995823   +0 56 31.2
 HV7093;UTM  18      - 4,247,912.899   326,078.869   MT  0.99997253   -1 14 08.9
 HV7093
 HV7093_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2607847912(NAD 83)
 HV7093
 HV7093                          SUPERSEDED SURVEY CONTROL
 HV7093
 HV7093  NAD 83(1991)-  38 21 45.03033(N)    076 59 26.47211(W) AD(       ) 3
 HV7093  NAD 83(1986)-  38 21 45.03005(N)    076 59 26.48283(W) AD(       ) 3
 HV7093  NAD 27      -  38 21 44.57000(N)    076 59 27.58000(W) AD(       ) 3
 HV7093
 HV7093.Superseded values are not recommended for survey control.
 HV7093
 HV7093.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7093.See file dsdata.pdf to determine how the superseded data were derived.
 HV7093
 HV7093_MARKER: 14 = NAVIGATION LIGHT
 HV7093
 HV7093  HISTORY     - Date     Condition        Report By
 HV7093  HISTORY     - 1941     FIRST OBSERVED   CGS
 HV7093  HISTORY     - 1958     GOOD             CGS
 HV7093
 HV7093                          STATION DESCRIPTION
 HV7093
 HV7093'DESCRIBED BY COAST AND GEODETIC SURVEY 1941 (GCM)
 HV7093'THE TOP WHITE LIGHT OF A ROW OF WHITE LIGHTS IN THE CENTER OF THE
 HV7093'STEEL BRIDGE ACROSS THE POTOMAC RIVER AT DAHLGREN, AND ON THE
 HV7093'NORTH SIDE OF THE BRIDGE.
 HV7093
 HV7093                          STATION RECOVERY (1958)
 HV7093
 HV7093'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV7093'THIS STATION WAS RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7222 ***********************************************************************
 HV7222  DESIGNATION -  BRIDGE
 HV7222  PID         -  HV7222
 HV7222  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7222  COUNTRY     -  US
 HV7222  USGS QUAD   -  BRISTOL (2016)
 HV7222
 HV7222                         *CURRENT SURVEY CONTROL
 HV7222  ______________________________________________________________________
 HV7222* NAD 83(1993) POSITION- 38 48 38.64096(N) 076 42 49.16209(W)   ADJUSTED
 HV7222* NAVD 88 ORTHO HEIGHT -    20.    (meters)       66.    (feet) SCALED
 HV7222  ______________________________________________________________________
 HV7222  GEOID HEIGHT    -        -33.050 (meters)                     GEOID18
 HV7222  LAPLACE CORR    -         -6.01  (seconds)                    DEFLEC18
 HV7222  HORZ ORDER      -  SECOND
 HV7222
 HV7222.The horizontal coordinates were established by classical geodetic methods
 HV7222.and adjusted by the National Geodetic Survey in November 1994.
 HV7222
 HV7222.The orthometric height was scaled from a topographic map.
 HV7222
 HV7222.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7222.GEOID18 height accuracy estimate available here.
 HV7222
 HV7222.Click photographs - Photos may exist for this station.
 HV7222
 HV7222.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7222
 HV7222. The following values were computed from the NAD 83(1993) position.
 HV7222
 HV7222;                    North         East     Units Scale Factor Converg.
 HV7222;SPC MD       -   127,035.095   424,869.615   MT  0.99995049   +0 10 47.0
 HV7222;SPC MD       -   416,780.97  1,393,926.40   sFT  0.99995049   +0 10 47.0
 HV7222;UTM  18      - 4,297,168.606   351,212.189   MT  0.99987261   -1 04 27.2
 HV7222
 HV7222!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7222!SPC MD       -   1.00000209  x   0.99995049  =   0.99995258
 HV7222!UTM  18      -   1.00000209  x   0.99987261  =   0.99987470
 HV7222
 HV7222:                Primary Azimuth Mark                     Grid Az
 HV7222:SPC MD       -  BRIDGE RM 3 AZIMUTH                      147 11 15.0
 HV7222:UTM  18      -  BRIDGE RM 3 AZIMUTH                      148 26 29.2
 HV7222
 HV7222_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5121297168(NAD 83)
 HV7222
 HV7222|---------------------------------------------------------------------|
 HV7222| PID    Reference Object                     Distance      Geod. Az  |
 HV7222|                                                           dddmmss.s |
 HV7222| CX2121 BRIDGE RM 2                          31.562 METERS 05035     |
 HV7222| CX2122 BRIDGE RM 3 AZIMUTH                                1472202.0 |
 HV7222| HV7223 BRIDGE 2                             21.321 METERS 14722     |
 HV7222| CX2120 BRIDGE RM 1                          20.693 METERS 34445     |
 HV7222|---------------------------------------------------------------------|
 HV7222
 HV7222                          SUPERSEDED SURVEY CONTROL
 HV7222
 HV7222  NAD 83(1991)-  38 48 38.64094(N)    076 42 49.16209(W) AD(       ) 2
 HV7222  NAD 83(1986)-  38 48 38.63768(N)    076 42 49.17509(W) AD(       ) 2
 HV7222  NAD 27      -  38 48 38.22997(N)    076 42 50.29151(W) AD(       ) 2
 HV7222
 HV7222.Superseded values are not recommended for survey control.
 HV7222
 HV7222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7222.See file dsdata.pdf to determine how the superseded data were derived.
 HV7222
 HV7222_MARKER: DS = TRIANGULATION STATION DISK
 HV7222_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7222_STAMPING: BRIDGE 1933
 HV7222_MARK LOGO: CGS
 HV7222_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7222+STABILITY: SURFACE MOTION
 HV7222
 HV7222  HISTORY     - Date     Condition        Report By
 HV7222  HISTORY     - 1933     MONUMENTED       CGS
 HV7222  HISTORY     - 1945     GOOD             CGS
 HV7222  HISTORY     - 1960     SEE DESCRIPTION  MDDT
 HV7222
 HV7222                          STATION DESCRIPTION
 HV7222
 HV7222'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 HV7222'THE STATION IS ON THE PROPERTY OF MR. REVERDY SASSCER, ON A BLUFF
 HV7222'OVERLOOKING THE PATUXENT RIVER.  IT IS ROUGHLY 150 YARDS W OF W
 HV7222'EDGE OF RIVER, ABOUT 300 YARDS SW OF W END OF THE HIGHWAY BRIDGE,
 HV7222'ABOUT 200 YARDS S OF PAVED ROUTE 4, JUST W OF A LARGE GRAVEL PIT,
 HV7222'12 YARDS S OF THE S EDGE OF THE WOODS AND A SHARP BREAK IN THE
 HV7222'HILL TO THE N, AND 3 YARDS E OF A WIRE FENCE.  THE MARK STANDS
 HV7222'ABOUT 8 INCHES ABOVE THE GROUND.  THIS POINT IS LOCATED ABOUT 3
 HV7222'MILES ESE OF UPPER MARLBORO.  CLEARING WILL BE NECESSARY TO SEE
 HV7222'ALONG THE RIVER TO THE NE.
 HV7222'
 HV7222'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV7222'DISKS SET IN CONCRETE.
 HV7222'
 HV7222'REFERENCE MARK NO.1 IS N OF STATION, 1 FOOT E OF THE WIRE FENCE, 3
 HV7222'FEET S OF THE S EDGE OF THE WOODS AND THE BREAK IN THE HILL, 3
 HV7222'FEET SSE OF A FENCE POST.
 HV7222'
 HV7222'REFERENCE MARK NO.2 IS NE OF STATION, NW OF GRAVEL PIT, IN S EDGE
 HV7222'OF THE WOODS, 1 YARD S OF BREAK IN HILL, AND 97.92 FEET SSE OF
 HV7222'REFERENCE MARK NO.1.  IT STANDS 8 INCHES ABOVE GROUND.
 HV7222'
 HV7222'REFERENCE MARK NO.3 IS S OF STATION, ON W SIDE OF A GATE LEADING
 HV7222'INTO THE PATUXENT GUN CLUB, 4 YARDS N OF W END OF A CULVERT, AND 4
 HV7222'YARDS W OF ROAD.
 HV7222'
 HV7222'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV7222
 HV7222                          STATION RECOVERY (1945)
 HV7222
 HV7222'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945 (FLP)
 HV7222'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.
 HV7222'THE DISTANCES TO REFERENCE MARKS WERE MEASURED AND CHECKED.  THE
 HV7222'DESCRIPTION IS ADEQUATE.
 HV7222
 HV7222                          STATION RECOVERY (1960)
 HV7222
 HV7222'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 HV7222'STATION, REFERENCE MARKS NO 1 AND 2, AND AZIMUTH MARK (RM NO 3)
 HV7222'WERE RECOVERED AND FOUND TO BE IN GOOD CONDITION.  STATION AND
 HV7222'REFERENCE MARKS NO 1 AND NO 2 WERE DESTROYED TO MAKE WAY FOR
 HV7222'HIGHWAY CONSTRUCTION.  A NEW STATION BRIDGE 2 AND 2 NEW REFERENCE
 HV7222'MARKS WERE ESTABLISHED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8837 ***********************************************************************
 HV8837  DESIGNATION -  BRIDGE
 HV8837  PID         -  HV8837
 HV8837  STATE/COUNTY-  MD/QUEEN ANNES
 HV8837  COUNTRY     -  US
 HV8837  USGS QUAD   -  KENT ISLAND (2016)
 HV8837
 HV8837                         *CURRENT SURVEY CONTROL
 HV8837  ______________________________________________________________________
 HV8837* NAD 83(1991) POSITION- 38 59 12.63075(N) 076 19 59.51754(W)   ADJUSTED
 HV8837* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV8837  ______________________________________________________________________
 HV8837  GEOID HEIGHT    -        -33.550 (meters)                     GEOID18
 HV8837  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 HV8837  HORZ ORDER      -  THIRD
 HV8837
 HV8837.The horizontal coordinates were established by classical geodetic methods
 HV8837.and adjusted by the National Geodetic Survey in January 1992.
 HV8837
 HV8837.The orthometric height was scaled from a topographic map.
 HV8837
 HV8837.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8837.GEOID18 height accuracy estimate available here.
 HV8837
 HV8837.Click photographs - Photos may exist for this station.
 HV8837
 HV8837.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8837
 HV8837. The following values were computed from the NAD 83(1991) position.
 HV8837
 HV8837;                    North         East     Units Scale Factor Converg.
 HV8837;SPC MD       -   146,756.510   457,769.939   MT  0.99995172   +0 25 06.6
 HV8837;SPC MD       -   481,483.65  1,501,866.87   sFT  0.99995172   +0 25 06.6
 HV8837;UTM  18      - 4,316,161.683   384,532.359   MT  0.99976417   -0 50 19.9
 HV8837
 HV8837!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8837!SPC MD       -   1.00000530  x   0.99995172  =   0.99995702
 HV8837!UTM  18      -   1.00000530  x   0.99976417  =   0.99976947
 HV8837
 HV8837_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8453216161(NAD 83)
 HV8837
 HV8837                          SUPERSEDED SURVEY CONTROL
 HV8837
 HV8837  NAD 83(1986)-  38 59 12.62796(N)    076 19 59.52999(W) AD(       ) 3
 HV8837
 HV8837.Superseded values are not recommended for survey control.
 HV8837
 HV8837.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8837.See file dsdata.pdf to determine how the superseded data were derived.
 HV8837
 HV8837_MARKER: DD = SURVEY DISK
 HV8837_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8837_STAMPING: BRIDGE 1983
 HV8837_MARK LOGO: NOS
 HV8837_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 HV8837_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8837+STABILITY: SURFACE MOTION
 HV8837_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8837+SATELLITE: SATELLITE OBSERVATIONS - April 12, 2006
 HV8837
 HV8837  HISTORY     - Date     Condition        Report By
 HV8837  HISTORY     - 1983     MONUMENTED       NOS
 HV8837  HISTORY     - 20060412 GOOD             USPSQD
 HV8837
 HV8837                          STATION DESCRIPTION
 HV8837
 HV8837'DESCRIBED BY NATIONAL OCEAN SERVICE 1983 (WVH)
 HV8837'THE STATION IS LOCATED ON THE EAST SHORE OF CHESAPEAKE BAY, ON THE
 HV8837'WEST SHORE OF KENT ISLAND, AND ABOUT 1/4 MILE NORTH FROM THE
 HV8837'CHESAPEAKE BAY BRIDGE.
 HV8837'
 HV8837'TO REACH THE STATION FROM THE EAST END OF THE CHESAPEAKE
 HV8837'BAY BRIDGE (US 301), GO EAST ON US 301 FOR 1.0 KM (0.6 MILE)
 HV8837'TO THE JUNCTION WITH MD 18.  TURN LEFT AND GO NORTH ON MD 18 FOR
 HV8837'0.1 KM (0.1 MILE) TO A PAVED SIDE ROAD LEFT.  TURN LEFT AND
 HV8837'GO WEST ON THIS PAVED ROAD (PARALLELING US 301) FOR 1.6 KM
 HV8837'(1.0 MILE) TO ITS END AT THE SHORELINE AND THE STATION.
 HV8837'
 HV8837'THE STATION IS A STANDARD NOS DISK
 HV8837'STAMPED---BRIDGE 1983---,
 HV8837'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 20 CM IN DIAMETER
 HV8837'FLUSH WITH GROUND.  IT IS LOCATED
 HV8837'28.55 METERS (93.67 FT) NORTHWEST FROM A TREE WITH A WITNESS SIGN
 HV8837'NAILED TO IT,
 HV8837'18.84 METERS (61.81 FT) NORTHWEST FROM A MANHOLE COVER, AND
 HV8837'3.7 METERS (12.1 FT) EAST FROM THE TOP OF THE RIP-RAP BANK.
 HV8837'
 HV8837'HEIGHT OF LIGHT SHOWN ABOVE THE MARK WAS 1.50 METERS.
 HV8837'
 HV8837'DESCRIBED BY J. DANIEL.
 HV8837
 HV8837                          STATION RECOVERY (2006)
 HV8837
 HV8837'RECOVERY NOTE BY US POWER SQUADRON 2006 (KRT)
 HV8837'FROM US HIGHWAY 50/301 TURN NORTH ON MARYLAND ROUTE 8 FOR .4 MILE TO
 HV8837'SKIPJACK PARKWAY ON THHE LEFT.  TURN ON SKIPJACK TO LOG CANOE CIRCLE,
 HV8837'TURN LEFT, PROCEED TO TERRAPIN PARK ENTRANCE.  FOLLOW THE TRAILL TO
 HV8837'THE SOUTH BEACH, PROCEED ALONG AN UNPAVED ROAD ALONG THE SHORTLINE TO
 HV8837'THE VIEWING AREA WITH A RIP-RAPPED BULKHEAD AND PARK BENCH.  THE MARK
 HV8837'IS 21 FEET NW OF THE BENCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC9965 ***********************************************************************
 AC9965  DESIGNATION -  BRIDGE
 AC9965  PID         -  AC9965
 AC9965  STATE/COUNTY-  MD/TALBOT
 AC9965  COUNTRY     -  US
 AC9965  USGS QUAD   -  TILGHMAN (2016)
 AC9965
 AC9965                         *CURRENT SURVEY CONTROL
 AC9965  ______________________________________________________________________
 AC9965* NAD 83(1986) POSITION- 38 43 10.     (N) 076 19 59.     (W)   SCALED
 AC9965* NAVD 88 ORTHO HEIGHT -     0.790 (meters)        2.59  (feet) ADJUSTED
 AC9965  ______________________________________________________________________
 AC9965  GEOID HEIGHT    -        -34.172 (meters)                     GEOID18
 AC9965  DYNAMIC HEIGHT  -          0.790 (meters)        2.59  (feet) COMP
 AC9965  MODELED GRAVITY -    980,045.5   (mgal)                       NAVD 88
 AC9965
 AC9965  VERT ORDER      -  SECOND    CLASS I
 AC9965
 AC9965.The horizontal coordinates were scaled from a map and have
 AC9965.an estimated accuracy of +/- 6 seconds.
 AC9965
 AC9965.The orthometric height was determined by differential leveling and
 AC9965.adjusted by the NATIONAL GEODETIC SURVEY
 AC9965.in October 1997.
 AC9965
 AC9965.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC9965.GEOID18 height accuracy estimate available here.
 AC9965
 AC9965.Click photographs - Photos may exist for this station.
 AC9965
 AC9965.The dynamic height is computed by dividing the NAVD 88
 AC9965.geopotential number by the normal gravity value computed on the
 AC9965.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC9965.degrees latitude (g = 980.6199 gals.).
 AC9965
 AC9965.The modeled gravity was interpolated from observed gravity values.
 AC9965
 AC9965;                    North         East    Units  Estimated Accuracy
 AC9965;SPC MD       -   117,070.      458,000.      MT  (+/- 180 meters Scaled)
 AC9965
 AC9965_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH841864(NAD 83)
 AC9965
 AC9965                          SUPERSEDED SURVEY CONTROL
 AC9965
 AC9965.No superseded survey control is available for this station.
 AC9965
 AC9965_MARKER: DJ = TIDAL STATION DISK
 AC9965_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AC9965_SP_SET: PATIO
 AC9965_STAMPING: BRIDGE
 AC9965_MARK LOGO: USACE
 AC9965_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AC9965_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AC9965
 AC9965  HISTORY     - Date     Condition        Report By
 AC9965  HISTORY     - 1992     MONUMENTED       USACE
 AC9965  HISTORY     - 19950319 GOOD             MDSHA
 AC9965  HISTORY     - 20040615 MARK NOT FOUND   USPSQD
 AC9965
 AC9965                          STATION DESCRIPTION
 AC9965
 AC9965'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1995 (CAM)
 AC9965'THE STATION IS LOCATED ON THE SOUTH SIDE OF KNAPPS NARROWS AND WEST OF
 AC9965'STATE HIGHWAY 33 AT HARRISONS RESTAURANT. THE STATION IS A U.S. ARMY
 AC9965'CORP OF ENGINEERS TIDAL BENCH MARK SET IN A DRILL HOLE IN THE CONCRETE
 AC9965'PATIO ON THE NORTH SIDE OF HARRISONS RESTAURANT.  IT IS 26.5 FT (8.1
 AC9965'M) NORTH OF THE NORTHWEST CORNER OF THE RESTAURANT, 20.4 FT (6.2 M)
 AC9965'SOUTHWEST OF A BULKHEAD FOR KNAPPS NARROWS AND 26.4 FT (8.0 M)
 AC9965'SOUTHEAST OF A BULKHEAD FOR INLET FOR DOCKING BOATS.
 AC9965
 AC9965                          STATION RECOVERY (2004)
 AC9965
 AC9965'RECOVERY NOTE BY US POWER SQUADRON 2004 (JKW)
 AC9965'OWNER REPORTS THAT THE DISK WAS COVERED WHEN THE PATIO WAS RESURFACED.
 AC9965'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7223 ***********************************************************************
 HV7223  DESIGNATION -  BRIDGE 2
 HV7223  PID         -  HV7223
 HV7223  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7223  COUNTRY     -  US
 HV7223  USGS QUAD   -  BRISTOL (2016)
 HV7223
 HV7223                         *CURRENT SURVEY CONTROL
 HV7223  ______________________________________________________________________
 HV7223* NAD 83(1993) POSITION- 38 48 38.05869(N) 076 42 48.68555(W)   NO CHECK
 HV7223* NAVD 88 ORTHO HEIGHT -    20.    (meters)       66.    (feet) SCALED
 HV7223  ______________________________________________________________________
 HV7223  GEOID HEIGHT    -        -33.051 (meters)                     GEOID18
 HV7223  LAPLACE CORR    -         -6.00  (seconds)                    DEFLEC18
 HV7223  HORZ ORDER      -  THIRD
 HV7223
 HV7223.The horizontal coordinates were established by classical geodetic methods
 HV7223.and adjusted by the National Geodetic Survey in November 1994.
 HV7223
 HV7223.No horizontal observational check was made to the station.
 HV7223
 HV7223.The orthometric height was scaled from a topographic map.
 HV7223
 HV7223.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7223.GEOID18 height accuracy estimate available here.
 HV7223
 HV7223.Click photographs - Photos may exist for this station.
 HV7223
 HV7223.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7223
 HV7223. The following values were computed from the NAD 83(1993) position.
 HV7223
 HV7223;                    North         East     Units Scale Factor Converg.
 HV7223;SPC MD       -   127,017.177   424,881.168   MT  0.99995049   +0 10 47.3
 HV7223;SPC MD       -   416,722.19  1,393,964.30   sFT  0.99995049   +0 10 47.3
 HV7223;UTM  18      - 4,297,150.441   351,223.347   MT  0.99987257   -1 04 26.9
 HV7223
 HV7223!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7223!SPC MD       -   1.00000209  x   0.99995049  =   0.99995258
 HV7223!UTM  18      -   1.00000209  x   0.99987257  =   0.99987466
 HV7223
 HV7223:                Primary Azimuth Mark                     Grid Az
 HV7223:SPC MD       -  BRIDGE RM 3 AZIMUTH                      147 11 14.1
 HV7223:UTM  18      -  BRIDGE RM 3 AZIMUTH                      148 26 28.3
 HV7223
 HV7223_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5122397150(NAD 83)
 HV7223
 HV7223|---------------------------------------------------------------------|
 HV7223| PID    Reference Object                     Distance      Geod. Az  |
 HV7223|                                                           dddmmss.s |
 HV7223| CX2124 BRIDGE 2 RM 4                        19.254 METERS 11930     |
 HV7223| CX2122 BRIDGE RM 3 AZIMUTH                                1472201.4 |
 HV7223| CX2123 BRIDGE 2 RM 3                        30.093 METERS 27616     |
 HV7223| HV7222 BRIDGE                               21.321 METERS 32722     |
 HV7223|---------------------------------------------------------------------|
 HV7223
 HV7223                          SUPERSEDED SURVEY CONTROL
 HV7223
 HV7223  NAD 83(1991)-  38 48 38.05866(N)    076 42 48.68555(W) AD(       ) 3
 HV7223  NAD 83(1986)-  38 48 38.05541(N)    076 42 48.69855(W) AD(       ) 3
 HV7223  NAD 27      -  38 48 37.64470(N)    076 42 49.82350(W) AD(       ) 3
 HV7223
 HV7223.Superseded values are not recommended for survey control.
 HV7223
 HV7223.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7223.See file dsdata.pdf to determine how the superseded data were derived.
 HV7223
 HV7223_MARKER: DS = TRIANGULATION STATION DISK
 HV7223_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV7223_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV7223_STAMPING: BRIDGE 2 1960
 HV7223_MARK LOGO: CGS
 HV7223_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7223
 HV7223  HISTORY     - Date     Condition        Report By
 HV7223  HISTORY     - 1960     MONUMENTED       MDDT
 HV7223
 HV7223                          STATION DESCRIPTION
 HV7223
 HV7223'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 HV7223'STATION IS LOCATED 3 MILES EAST OF UPPER MARLBORO ALONG MARYLAND
 HV7223'STATE HIGHWAY NO. 4 AT THE PATUXENT RIVER.  IT IS SET ON THE WEST
 HV7223'SIDE OF THE RIVER IN THE NORTH EDGE OF A CULTIVATED FIELD, 186
 HV7223'FEET SOUTH OF THE CENTERLINE OF THE EASTBOUND LANE OF HIGHWAY NO.
 HV7223'4, 50 FEET SOUTH OF THE CENTERLINE OF A SERVICE ROAD AND 275 FEET
 HV7223'SOUTHWEST OF THE WEST END OF THE NEW EASTBOUND BRIDGE OVER THE
 HV7223'RIVER.  MARK PROJECTS ABOUT 3 INCHES AND THE DISK IS STAMPED
 HV7223'BRIDGE 2 1960.  UNDERGROUND MARK IS 30 INCHES BELOW THE SURFACE.
 HV7223'
 HV7223'REFERENCE MARK NO 3 IS 50 FEET SOUTH OF THE CENTERLINE OF THE
 HV7223'SERVICE ROAD, ON THE NORTH EDGE OF THE CULTIVATED FIELD, PROJECTS
 HV7223'3 INCHES, AND THE DISK IS STAMPED BRIDGE NO 3 1960.
 HV7223'
 HV7223'REFERENCE MARK NO 4 IS 87 FEET SOUTH OF THE CENTERLINE OF THE
 HV7223'SERVICE ROAD, 250 FEET SOUTHWEST OF THE WEST END OF THE EASTBOUND
 HV7223'BRIDGE, AT THE TOP OF A BANK, PROJECTS 4 INCHES AND THE DISK IS
 HV7223'STAMPED BRIDGE NO 4 1960.
 HV7223'
 HV7223'AZIMUTH MARK IS 13 FEET WEST OF THE CENTERLINE OF THE ENTRANCE TO
 HV7223'THE PATUXENT GUN CLUB, 11 FEET NORTH OF A CULVERT AND JUST NORTH
 HV7223'OF THE GATE TO THE CLUB, PROJECTS 2 INCHES AND THE DISK IS STAMPED
 HV7223'BRIDGE NO 3 1933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2204 ***********************************************************************
 JV2204  DESIGNATION -  BRIDGE 26 A BORR
 JV2204  PID         -  JV2204
 JV2204  STATE/COUNTY-  MD/MONTGOMERY
 JV2204  COUNTRY     -  US
 JV2204  USGS QUAD   -  GERMANTOWN (2016)
 JV2204
 JV2204                         *CURRENT SURVEY CONTROL
 JV2204  ______________________________________________________________________
 JV2204* NAD 83(1986) POSITION- 39 09 36.     (N) 077 15 04.     (W)   SCALED
 JV2204* NAVD 88 ORTHO HEIGHT -   111.205 (meters)      364.85  (feet) ADJUSTED
 JV2204  ______________________________________________________________________
 JV2204  GEOID HEIGHT    -        -31.800 (meters)                     GEOID18
 JV2204  DYNAMIC HEIGHT  -        111.146 (meters)      364.65  (feet) COMP
 JV2204  MODELED GRAVITY -    980,100.1   (mgal)                       NAVD 88
 JV2204
 JV2204  VERT ORDER      -  FIRST     CLASS II
 JV2204
 JV2204.The horizontal coordinates were scaled from a map and have
 JV2204.an estimated accuracy of +/- 6 seconds.
 JV2204
 JV2204.The orthometric height was determined by differential leveling and
 JV2204.adjusted by the NATIONAL GEODETIC SURVEY
 JV2204.in June 1991.
 JV2204
 JV2204.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2204.GEOID18 height accuracy estimate available here.
 JV2204
 JV2204.Click photographs - Photos may exist for this station.
 JV2204
 JV2204.The dynamic height is computed by dividing the NAVD 88
 JV2204.geopotential number by the normal gravity value computed on the
 JV2204.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2204.degrees latitude (g = 980.6199 gals.).
 JV2204
 JV2204.The modeled gravity was interpolated from observed gravity values.
 JV2204
 JV2204;                    North         East    Units  Estimated Accuracy
 JV2204;SPC MD       -   165,800.      378,300.      MT  (+/- 180 meters Scaled)
 JV2204
 JV2204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ055369(NAD 83)
 JV2204
 JV2204                          SUPERSEDED SURVEY CONTROL
 JV2204
 JV2204  NGVD 29 (11/26/84)  111.422  (m)          365.56   (f) ADJUSTED    1 2
 JV2204
 JV2204.Superseded values are not recommended for survey control.
 JV2204
 JV2204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2204.See file dsdata.pdf to determine how the superseded data were derived.
 JV2204
 JV2204_MARKER: Q = CHISELED SQUARE
 JV2204_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2204_SP_SET: BRIDGE
 JV2204_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2204
 JV2204  HISTORY     - Date     Condition        Report By
 JV2204  HISTORY     - UNK      MONUMENTED       BORR
 JV2204  HISTORY     - 1938     GOOD             CGS
 JV2204
 JV2204                          STATION DESCRIPTION
 JV2204
 JV2204'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2204'AT WARING.
 JV2204'AT WARING, MONTGOMERY COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JV2204'600 FEET NORTHWEST OF THE STATION, AT BRIDGE 26-A, ON THE TOP
 JV2204'OF THE STONE BASE OF A STEEL COLUMN, 10 FEET NORTHEAST OF THE
 JV2204'CENTER LINE OF THE NORTH-BOUND TRACK, AND 10 INCHES BELOW THE
 JV2204'LEVEL OF THE RAILS.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6426 ***********************************************************************
 HV6426  DESIGNATION -  BRIDGE MSFC 1910
 HV6426  PID         -  HV6426
 HV6426  STATE/COUNTY-  MD/DORCHESTER
 HV6426  COUNTRY     -  US
 HV6426  USGS QUAD   -  HONGA (2016)
 HV6426
 HV6426                         *CURRENT SURVEY CONTROL
 HV6426  ______________________________________________________________________
 HV6426* NAD 83(1991) POSITION- 38 17 59.09036(N) 076 12 23.68633(W)   ADJUSTED
 HV6426* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6426  ______________________________________________________________________
 HV6426  GEOID HEIGHT    -        -35.236 (meters)                     GEOID18
 HV6426  LAPLACE CORR    -         -4.98  (seconds)                    DEFLEC18
 HV6426  HORZ ORDER      -  THIRD
 HV6426
 HV6426.The horizontal coordinates were established by classical geodetic methods
 HV6426.and adjusted by the National Geodetic Survey in January 1992.
 HV6426
 HV6426.The orthometric height was scaled from a topographic map.
 HV6426
 HV6426.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6426.GEOID18 height accuracy estimate available here.
 HV6426
 HV6426.Click photographs - Photos may exist for this station.
 HV6426
 HV6426.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6426
 HV6426. The following values were computed from the NAD 83(1991) position.
 HV6426
 HV6426;                    North         East     Units Scale Factor Converg.
 HV6426;SPC MD       -    70,576.410   469,402.593   MT  1.00000004   +0 29 52.7
 HV6426;SPC MD       -   231,549.44  1,540,031.67   sFT  1.00000004   +0 29 52.7
 HV6426;UTM  18      - 4,239,762.018   394,496.354   MT  0.99973708   -0 44 52.4
 HV6426
 HV6426!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6426!SPC MD       -   1.00000541  x   1.00000004  =   1.00000545
 HV6426!UTM  18      -   1.00000541  x   0.99973708  =   0.99974249
 HV6426
 HV6426:                Primary Azimuth Mark                     Grid Az
 HV6426:SPC MD       -  MOUNT ZION ME CHURCH SPIRE               314 43 00.6
 HV6426:UTM  18      -  MOUNT ZION ME CHURCH SPIRE               315 57 45.7
 HV6426
 HV6426_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9449639762(NAD 83)
 HV6426
 HV6426|---------------------------------------------------------------------|
 HV6426| PID    Reference Object                     Distance      Geod. Az  |
 HV6426|                                                           dddmmss.s |
 HV6426| HV6432 MOUNT ZION ME CHURCH SPIRE          APPROX. 2.6 KM 3151253.3 |
 HV6426|---------------------------------------------------------------------|
 HV6426
 HV6426                          SUPERSEDED SURVEY CONTROL
 HV6426
 HV6426  NAD 83(1986)-  38 17 59.08971(N)    076 12 23.70352(W) AD(       ) 3
 HV6426  NAD 27      -  38 17 58.65200(N)    076 12 24.92900(W) AD(       ) 3
 HV6426  USSD        -  38 17 59.03400(N)    076 12 24.68200(W) AD(       ) 3
 HV6426
 HV6426.Superseded values are not recommended for survey control.
 HV6426
 HV6426.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6426.See file dsdata.pdf to determine how the superseded data were derived.
 HV6426
 HV6426_MARKER: H = DRILL HOLE
 HV6426_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6426_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6426+STABILITY: SURFACE MOTION
 HV6426
 HV6426  HISTORY     - Date     Condition        Report By
 HV6426  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6426  HISTORY     - 1942     GOOD             CGS
 HV6426  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6426
 HV6426                          STATION DESCRIPTION
 HV6426
 HV6426'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6426'STATION IS ON THE EASTERN SHORE OF CHESAPEAKE BAY AND WESTERN SHORE
 HV6426'OF HONGA RIVER, ON FERRY POINT AT THE SOUTHERN END OF UPPER
 HV6426'HOOPER ISLAND, ABOUT 3-3/4 MILES NE BY N OF HOOPER ISLAND
 HV6426'LIGHT.  STATION IS ON A MARSH POINT ABOUT 1 FOOT ABOVE HIGH WATER,
 HV6426'50 YARDS W OF RIVER SHORE, 55 YARDS S OF RIVER SHORE, 85 YARDS
 HV6426'E OF SHORE OF BAY, 75 YARDS NE BY N OF SECOND TELEPHONE POLE N
 HV6426'OF BRIDGE, AND 80 YARDS N-NE OF BRIDGE TENDERS CABIN.  STATION
 HV6426'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6426'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6426'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6426'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6426'TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE,
 HV6426'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HV6426'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6426'FOLLOWS--NEAR PEAK OF OYSTER HOUSE, 1-1/2 MILES, N 31 DEG
 HV6426'19 MIN W.  NEAR PEAK OF BARN, 1-1/2 MILES, N 23 DEG 46 MIN E.
 HV6426'CENTER OF ROOF OF OLD WINDMILL, 3-3/4 MILES, N 77 DEG 33 MIN E.
 HV6426'OUTSIDE CHIMNEY OF RIGHT END OF HOUSE, 1 MILE, S 60 DEG 44 MIN E.
 HV6426'CHIMNEY IN CENTER OF LARGE HOUSE, 1-1/4 MILES, S 53 DEG 32 MIN W.
 HV6426'CHIMNEY IN CENTER OF HOUSE, 2 MILES, S 39 DEG 22 MIN E.
 HV6426
 HV6426                          STATION RECOVERY (1942)
 HV6426
 HV6426'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6426'THE STATION IS LOCATED ON THE EASTERN SHORE OF CHESAPEAKE BAY
 HV6426'AND ON THE WESTERN SHORE OF THE HONGA RIVER ON FERRY POINT AT
 HV6426'THE SOUTHERN END OF UPPER HOOPER ISLAND.  THE STATION IS ON A
 HV6426'MARSHY POINT, 97 FEET W OF THE SHORELINE OF THE HONGA RIVER, 190
 HV6426'FEET E OF THE ROAD LEADING TO FISHING CREEK AND MIDWAY BETWEEN
 HV6426'THE SOUTHERN AND NORTHERN SHORES OF A SMALL POINT WHICH EXTENDS
 HV6426'INTO THE HONGA RIVER.
 HV6426'
 HV6426'THE STATION IS MARKED BY A STANDARD MARYLAND SHELL FISH
 HV6426'COMMISSION MONUMENT, 9 INCHES SQUARE WITH THE LETTERS M.S.F.C. AND
 HV6426'U.S.C.S. COUNTERSUNK INTO ITS SURFACE.  THE MONUMENT EXTENDS 2
 HV6426'INCHES ABOVE THE SURFACE OF THE GROUND, AND IS IN FAIR
 HV6426'CONDITION, THE MONUMENT BEING CRACKED IN TWO PLACES.
 HV6426'
 HV6426'NO REFERENCE MARKS WERE SET.
 HV6426
 HV6426                          STATION RECOVERY (1961)
 HV6426
 HV6426'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6426'STATION NOT RECOVERED AFTER A THOROUGH SEARCH OF THE AREA.  IT
 HV6426'HAS EITHER BEEN DESTROYED BY EROSION OR BURIED BENEATH HEAVY
 HV6426'DEBRIS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0405 ***********************************************************************
 JW0405  DESIGNATION -  BRIDGE=154
 JW0405  PID         -  JW0405
 JW0405  STATE/COUNTY-  MD/ALLEGANY
 JW0405  COUNTRY     -  US
 JW0405  USGS QUAD   -  CUMBERLAND (2016)
 JW0405
 JW0405                         *CURRENT SURVEY CONTROL
 JW0405  ______________________________________________________________________
 JW0405* NAD 83(1986) POSITION- 39 39 05.     (N) 078 46 17.     (W)   SCALED
 JW0405* NAVD 88 ORTHO HEIGHT -   196.454 (meters)      644.53  (feet) ADJUSTED
 JW0405  ______________________________________________________________________
 JW0405  GEOID HEIGHT    -        -32.692 (meters)                     GEOID18
 JW0405  DYNAMIC HEIGHT  -        196.340 (meters)      644.16  (feet) COMP
 JW0405  MODELED GRAVITY -    980,043.5   (mgal)                       NAVD 88
 JW0405
 JW0405  VERT ORDER      -  SECOND    CLASS 0
 JW0405
 JW0405.The horizontal coordinates were scaled from a map and have
 JW0405.an estimated accuracy of +/- 6 seconds.
 JW0405
 JW0405.The orthometric height was determined by differential leveling and
 JW0405.adjusted by the NATIONAL GEODETIC SURVEY
 JW0405.in June 1991.
 JW0405
 JW0405.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0405.GEOID18 height accuracy estimate available here.
 JW0405
 JW0405.Click photographs - Photos may exist for this station.
 JW0405
 JW0405.The dynamic height is computed by dividing the NAVD 88
 JW0405.geopotential number by the normal gravity value computed on the
 JW0405.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0405.degrees latitude (g = 980.6199 gals.).
 JW0405
 JW0405.The modeled gravity was interpolated from observed gravity values.
 JW0405
 JW0405;                    North         East    Units  Estimated Accuracy
 JW0405;SPC MD       -   221,800.      247,970.      MT  (+/- 180 meters Scaled)
 JW0405
 JW0405_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD912914(NAD 83)
 JW0405
 JW0405                          SUPERSEDED SURVEY CONTROL
 JW0405
 JW0405  NGVD 29 (??/??/92)  196.649  (m)          645.17   (f) ADJ UNCH    2 0
 JW0405
 JW0405.Superseded values are not recommended for survey control.
 JW0405
 JW0405.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0405.See file dsdata.pdf to determine how the superseded data were derived.
 JW0405
 JW0405_MARKER: R = RIVET
 JW0405_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0405_SP_SET: RETAINING WALL
 JW0405_MARK LOGO: BORR
 JW0405_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0405
 JW0405  HISTORY     - Date     Condition        Report By
 JW0405  HISTORY     - UNK      MONUMENTED       BORR
 JW0405  HISTORY     - 1935     GOOD             CGS
 JW0405  HISTORY     - 1970     MARK NOT FOUND   MDDT
 JW0405
 JW0405                          STATION DESCRIPTION
 JW0405
 JW0405'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0405'AT CUMBERLAND.
 JW0405'AT CUMBERLAND, ALLEGANY COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JW0405'193 FEET NORTHEAST OF THE NORTHEAST END OF A HIGHWAY UNDERPASS,
 JW0405'200 FEET SOUTH OF THE STEEL BRIDGE OVERPASS, 50 FEET EAST OF THE
 JW0405'EAST CURB OF CHASE STREET, 13.4 FEET EAST OF THE EAST RAIL OF THE
 JW0405'EAST-BOUND TRACK, IN THE TOP OF A CONCRETE RETAINING WALL, 1
 JW0405'FOOT SOUTHWEST OF THE NORTHEAST END OF THE WALL, AND 1.3 FEET
 JW0405'NORTHWEST OF THE SOUTHEAST EDGE.  A COPPER RIVET.
 JW0405
 JW0405                          STATION RECOVERY (1970)
 JW0405
 JW0405'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1970
 JW0405'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6205 ***********************************************************************
 DN6205  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6205  DESIGNATION -  BRIDLE
 DN6205  PID         -  DN6205
 DN6205  STATE/COUNTY-  MD/CECIL
 DN6205  COUNTRY     -  US
 DN6205  USGS QUAD   -  CECILTON (2016)
 DN6205
 DN6205                         *CURRENT SURVEY CONTROL
 DN6205  ______________________________________________________________________
 DN6205* NAD 83(2011) POSITION- 39 28 26.81495(N) 075 46 44.86566(W)   ADJUSTED
 DN6205* NAD 83(2011) ELLIP HT-   -13.151 (meters)        (06/27/12)   ADJUSTED
 DN6205* NAD 83(2011) EPOCH   -  2010.00
 DN6205* NAVD 88 ORTHO HEIGHT -    20.29  (meters)       66.6   (feet) GPS OBS
 DN6205  ______________________________________________________________________
 DN6205  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6205  GEOID HEIGHT    -        -33.417 (meters)                     GEOID03
 DN6205  GEOID HEIGHT    -        -33.448 (meters)                     GEOID18
 DN6205  NAD 83(2011) X  -  1,211,111.979 (meters)                     COMP
 DN6205  NAD 83(2011) Y  - -4,778,947.253 (meters)                     COMP
 DN6205  NAD 83(2011) Z  -  4,033,077.215 (meters)                     COMP
 DN6205  LAPLACE CORR    -         -1.02  (seconds)                    DEFLEC18
 DN6205
 DN6205  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6205  Standards:
 DN6205         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6205            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6205  -------------------------------------------------------------------
 DN6205  NETWORK    0.52   1.12           0.23   0.19   0.57      0.04377601
 DN6205  -------------------------------------------------------------------
 DN6205  Click here for local accuracies and other accuracy information.
 DN6205
 DN6205.The horizontal coordinates were established by GPS observations
 DN6205.and adjusted by the National Geodetic Survey in June 2012.
 DN6205
 DN6205.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6205.been affixed to the stable North American tectonic plate. See 
 DN6205.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6205
 DN6205.The horizontal coordinates are valid at the epoch date displayed above
 DN6205.which is a decimal equivalence of Year/Month/Day.
 DN6205
 DN6205.The orthometric height was determined by GPS observations and a
 DN6205.high-resolution geoid model using precise GPS observation and
 DN6205.processing techniques.
 DN6205
 DN6205.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6205.GEOID18 height accuracy estimate available here.
 DN6205
 DN6205.Click photographs - Photos may exist for this station.
 DN6205
 DN6205.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6205
 DN6205.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6205
 DN6205.The ellipsoidal height was determined by GPS observations
 DN6205.and is referenced to NAD 83.
 DN6205
 DN6205. The following values were computed from the NAD 83(2011) position.
 DN6205
 DN6205;                    North         East     Units Scale Factor Converg.
 DN6205;SPC MD       -   201,343.494   505,047.520   MT  1.00000431   +0 45 58.5
 DN6205;SPC MD       -   660,574.45  1,656,976.74   sFT  1.00000431   +0 45 58.5
 DN6205;UTM  18      - 4,369,681.484   432,985.985   MT  0.99965529   -0 29 43.2
 DN6205
 DN6205!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6205!SPC MD       -   1.00000206  x   1.00000431  =   1.00000637
 DN6205!UTM  18      -   1.00000206  x   0.99965529  =   0.99965735
 DN6205
 DN6205_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3298569681(NAD 83)
 DN6205
 DN6205                          SUPERSEDED SURVEY CONTROL
 DN6205
 DN6205  NAD 83(2007)-  39 28 26.81502(N)    075 46 44.86630(W) AD(2002.00) 1
 DN6205  ELLIP H (02/23/12)  -13.113  (m)                       GP(2002.00) 4 1
 DN6205
 DN6205.Superseded values are not recommended for survey control.
 DN6205
 DN6205.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6205.See file dsdata.pdf to determine how the superseded data were derived.
 DN6205
 DN6205_MARKER: DD = SURVEY DISK
 DN6205_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6205_STAMPING: BRIDLE 2008
 DN6205_MARK LOGO: MD-015
 DN6205_PROJECTION: FLUSH
 DN6205_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6205_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6205+STABILITY: SURFACE MOTION
 DN6205_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6205+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6205
 DN6205  HISTORY     - Date     Condition        Report By
 DN6205  HISTORY     - 20081204 MONUMENTED       GWS
 DN6205
 DN6205                          STATION DESCRIPTION
 DN6205
 DN6205'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6205'THE STATION IS LOCATED IN 6.8 MI (10.9 KM) NORTHEAST OF CECILTON.
 DN6205'
 DN6205'TO REACH THE STATION FROM THE JUNCTION OF AUGUSTINE HERMAN HIGHWAY AND
 DN6205'CAYOTS CORNER ROAD (ROUTE 310), PROCEED EAST ON CAYOTS CORNER ROAD FOR
 DN6205'2.69 MI (4.3 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO
 DN6205'SOUTHEAST ON SOUTH ST. AUGUSTINE ROAD FOR 1.69 MI (2.7 KM) TO A
 DN6205'REVERSE Y-FORK.  BEAR RIGHT AND GO SOUTH ON OLD TELEGRAPH ROAD FOR
 DN6205'0.15 MI (0.2 KM) TO THE FIRST INTERSECTION OF HORSESHOE CIRCLE AND THE
 DN6205'STATION ON THE LEFT.
 DN6205'
 DN6205'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6205'CONCRETE MONUMENT, 23.6 FT (7.2 M) SOUTH OF THE CENTERLINE OF
 DN6205'HORSESHOE CIRCLE AND 27.4 EAST OF THE CENTER OF OLD TELEGRAPH ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6615 ***********************************************************************
 HV6615  DESIGNATION -  BRIEF 1908
 HV6615  PID         -  HV6615
 HV6615  STATE/COUNTY-  MD/ST MARYS
 HV6615  COUNTRY     -  US
 HV6615  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6615
 HV6615                         *CURRENT SURVEY CONTROL
 HV6615  ______________________________________________________________________
 HV6615* NAD 83(1993) POSITION- 38 12 00.27338(N) 076 27 12.17284(W)   ADJUSTED
 HV6615* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6615  ______________________________________________________________________
 HV6615  GEOID HEIGHT    -        -34.658 (meters)                     GEOID18
 HV6615  LAPLACE CORR    -         -6.15  (seconds)                    DEFLEC18
 HV6615  HORZ ORDER      -  THIRD
 HV6615
 HV6615.The horizontal coordinates were established by classical geodetic methods
 HV6615.and adjusted by the National Geodetic Survey in November 1994.
 HV6615
 HV6615.The orthometric height was scaled from a topographic map.
 HV6615
 HV6615.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6615.GEOID18 height accuracy estimate available here.
 HV6615
 HV6615.Click photographs - Photos may exist for this station.
 HV6615
 HV6615.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6615
 HV6615. The following values were computed from the NAD 83(1993) position.
 HV6615
 HV6615;                    North         East     Units Scale Factor Converg.
 HV6615;SPC MD       -    59,354.412   447,880.747   MT  1.00001889   +0 20 35.1
 HV6615;SPC MD       -   194,731.93  1,469,422.08   sFT  1.00001889   +0 20 35.1
 HV6615;UTM  18      - 4,229,012.499   372,741.219   MT  0.99979945   -0 53 56.1
 HV6615
 HV6615!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6615!SPC MD       -   1.00000501  x   1.00001889  =   1.00002390
 HV6615!UTM  18      -   1.00000501  x   0.99979945  =   0.99980446
 HV6615
 HV6615:                Primary Azimuth Mark                     Grid Az
 HV6615:SPC MD       -  TENUATE 1908                             313 40 16.7
 HV6615:UTM  18      -  TENUATE 1908                             314 54 47.9
 HV6615
 HV6615_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7274129012(NAD 83)
 HV6615
 HV6615|---------------------------------------------------------------------|
 HV6615| PID    Reference Object                     Distance      Geod. Az  |
 HV6615|                                                           dddmmss.s |
 HV6615| HV6597 TENUATE 1908                        443.571 METERS 3140051.8 |
 HV6615|---------------------------------------------------------------------|
 HV6615
 HV6615                          SUPERSEDED SURVEY CONTROL
 HV6615
 HV6615  NAD 83(1991)-  38 12 00.27257(N)    076 27 12.17603(W) AD(       ) 3
 HV6615  NAD 83(1986)-  38 12 00.27294(N)    076 27 12.18933(W) AD(       ) 3
 HV6615  NAD 27      -  38 11 59.90600(N)    076 27 13.41100(W) AD(       ) 3
 HV6615  USSD        -  38 12 00.29000(N)    076 27 13.11500(W) AD(       ) 3
 HV6615
 HV6615.Superseded values are not recommended for survey control.
 HV6615
 HV6615.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6615.See file dsdata.pdf to determine how the superseded data were derived.
 HV6615
 HV6615_MARKER: Z = SEE DESCRIPTION
 HV6615_SETTING: 0 = UNSPECIFIED SETTING
 HV6615_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6615
 HV6615  HISTORY     - Date     Condition        Report By
 HV6615  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6615  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6615  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6615
 HV6615                          STATION DESCRIPTION
 HV6615
 HV6615'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6615'STATION IS ON THE WESTERN SHORE OF UPPER ST. MARYS RIVER, ON
 HV6615'SHORT POINT, ABOUT 3/8 MILE NW OF HORSESHOE POINT AND 1/2 MILE
 HV6615'S OF MARTIN POINT, ABOUT 10 FEET ABOVE HIGH WATER, 17 YARDS SSW
 HV6615'OF SHORE, 30 YARDS S OF EDGE OF BANK, 45 YARDS NW OF SHORE, AND
 HV6615'110 YARDS W OF EXTREME END OF POINT WITH 4 CEDAR TREES.
 HV6615'
 HV6615'SUBSURFACE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6615'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6615'POST 2 FEET LONG, ABOUT 12 INCHES BELOW SURFACE OF GROUND.  THE
 HV6615'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6615'POST.  SURFACE MARK IS CENTER OF 3-INCH SQUARE WOODEN
 HV6615'BOX.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE
 HV6615'AS FOLLOWS--NEAR CORNER OF NEAR CHIMNEY OF HYATTS HOUSE, 1/4
 HV6615'MILE, N 87 DEG 30 MIN W.  MIDDLE GABLE OF HILTONS HOUSE, 1-1/4
 HV6615'MILES, N 28 DEG 40 MIN W.  LEFT PEAK OF ROOF OF HAMMETTS HOUSE,
 HV6615'1 1/4 MILES, N 10 DEG 02 MIN W.  RIGHT PEAK OF ROOF OF SANDERS
 HV6615'HOUSE, 1-1/2 MILES, N 13 DEG 13 MIN E.  NAIL IN BLAZE IN 6-INCH
 HV6615'OAK TREE, 15.37 METERS (50.4 FEET), N 20 DEG 59 MIN E.  LEFT
 HV6615'CORNER OF CHIMNEY OUTSIDE OF COXS HOUSE, 1-1/2 MILES, N 31 DEG 01
 HV6615'MIN E.  NEAR PEAK OF ROOF BETWEEN 2 OUTSIDE CHIMNEYS, 1 MILE,
 HV6615'N 71 DEG 03 MIN E.  NAIL IN BLAZE IN 5-INCH OAK TREE, 37.68 METERS
 HV6615'(123.6 FEET), S 83 DEG 25 MIN E.  WINDMILL AT ST. MARYS SEMINARY,
 HV6615'1-1/4 MILES, S 52 DEG 34 MIN E.  CHIMNEY ON NEAR END OF HOUSE ON
 HV6615'PAGAN POINT, 7/8 MILE, S 39 DEG 24 MIN E.  LEFT CORNER OF NEAR
 HV6615'CHIMNEY OF MC KAYS HOUSE, 1-1/8 MILES, S 12 DEG 27 MIN.  NAIL IN
 HV6615'BLAZE IN 7-INCH OAK TREE, 29.86 METERS (98.0 FEET), S 07 DEG 06
 HV6615'MIN E.
 HV6615
 HV6615                          STATION RECOVERY (1942)
 HV6615
 HV6615'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6615'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE HOUR
 HV6615'BUT NO TRACE OF IT COULD BE FOUND.  ALL LOCAL REFERENCES HAVE
 HV6615'BEEN DESTROYED BY THE CAVING BANK.  IT IS RECOMMENDED THAT THIS
 HV6615'STATION BE CLASSIFIED AS LOST.
 HV6615
 HV6615                          STATION RECOVERY (1958)
 HV6615
 HV6615'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6615'THE STATION IS LOST.  DUE TO THE LOSS OF ALL LOCAL REFERENCES
 HV6615'THIS SUB-SURFACE MARK WAS NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1122 ***********************************************************************
 HV1122  DESIGNATION -  BRIGHT
 HV1122  PID         -  HV1122
 HV1122  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1122  COUNTRY     -  US
 HV1122  USGS QUAD   -  LANHAM (2016)
 HV1122
 HV1122                         *CURRENT SURVEY CONTROL
 HV1122  ______________________________________________________________________
 HV1122* NAD 83(1993) POSITION- 38 53 43.17672(N) 076 51 01.04103(W)   ADJUSTED
 HV1122* NAVD 88 ORTHO HEIGHT -    51.847 (meters)      170.10  (feet) ADJUSTED
 HV1122  ______________________________________________________________________
 HV1122  GEOID HEIGHT    -        -32.478 (meters)                     GEOID18
 HV1122  LAPLACE CORR    -         -5.24  (seconds)                    DEFLEC18
 HV1122  DYNAMIC HEIGHT  -         51.818 (meters)      170.01  (feet) COMP
 HV1122  MODELED GRAVITY -    980,080.5   (mgal)                       NAVD 88
 HV1122
 HV1122  HORZ ORDER      -  THIRD
 HV1122  VERT ORDER      -  SECOND    CLASS 0
 HV1122
 HV1122.The horizontal coordinates were established by classical geodetic methods
 HV1122.and adjusted by the National Geodetic Survey in November 1994.
 HV1122
 HV1122.The orthometric height was determined by differential leveling and
 HV1122.adjusted by the NATIONAL GEODETIC SURVEY
 HV1122.in June 1991.
 HV1122
 HV1122.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1122.GEOID18 height accuracy estimate available here.
 HV1122
 HV1122.Click photographs - Photos may exist for this station.
 HV1122
 HV1122.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1122
 HV1122.The dynamic height is computed by dividing the NAVD 88
 HV1122.geopotential number by the normal gravity value computed on the
 HV1122.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1122.degrees latitude (g = 980.6199 gals.).
 HV1122
 HV1122.The modeled gravity was interpolated from observed gravity values.
 HV1122
 HV1122. The following values were computed from the NAD 83(1993) position.
 HV1122
 HV1122;                    North         East     Units Scale Factor Converg.
 HV1122;SPC MD       -   136,397.196   412,987.340   MT  0.99994991   +0 05 38.3
 HV1122;SPC MD       -   447,496.47  1,354,942.63   sFT  0.99994991   +0 05 38.3
 HV1122;UTM  18      - 4,306,788.165   339,538.455   MT  0.99991706   -1 09 43.4
 HV1122
 HV1122!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1122!SPC MD       -   0.99999696  x   0.99994991  =   0.99994687
 HV1122!UTM  18      -   0.99999696  x   0.99991706  =   0.99991402
 HV1122
 HV1122:                Primary Azimuth Mark                     Grid Az
 HV1122:SPC MD       -  SEAT                                     181 16 02.5
 HV1122:UTM  18      -  SEAT                                     182 31 24.2
 HV1122
 HV1122_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3953806788(NAD 83)
 HV1122
 HV1122|---------------------------------------------------------------------|
 HV1122| PID    Reference Object                     Distance      Geod. Az  |
 HV1122|                                                           dddmmss.s |
 HV1122| HV1123 BRIGHT RM 1                          27.855 METERS 08210     |
 HV1122| HV1121 SEAT                                APPROX. 0.9 KM 1812140.8 |
 HV1122| HV1124 BRIGHT RM 2                          23.840 METERS 34552     |
 HV1122|---------------------------------------------------------------------|
 HV1122
 HV1122                          SUPERSEDED SURVEY CONTROL
 HV1122
 HV1122  NAD 83(1991)-  38 53 43.17640(N)    076 51 01.04112(W) AD(       ) 3
 HV1122  NAD 83(1986)-  38 53 43.17465(N)    076 51 01.05315(W) AD(       ) 3
 HV1122  NAD 27      -  38 53 42.77277(N)    076 51 02.15578(W) AD(       ) 3
 HV1122  NGVD 29              52.09   (m)          170.9    (f) LEVELING    3  
 HV1122  NGVD 29 (11/26/84)   52.090  (m)          170.90   (f) ADJUSTED    2 0
 HV1122
 HV1122.Superseded values are not recommended for survey control.
 HV1122
 HV1122.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1122.See file dsdata.pdf to determine how the superseded data were derived.
 HV1122
 HV1122_MARKER: DS = TRIANGULATION STATION DISK
 HV1122_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1122_STAMPING: BRIGHT 1958
 HV1122_MARK LOGO: CGS
 HV1122_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1122+STABILITY: SURFACE MOTION
 HV1122
 HV1122  HISTORY     - Date     Condition        Report By
 HV1122  HISTORY     - 1958     MONUMENTED       CGS
 HV1122  HISTORY     - 1958     GOOD             CGS
 HV1122
 HV1122                          STATION DESCRIPTION
 HV1122
 HV1122'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1122'STATION IS LOCATED ABOUT 10.0 MIL S EAST OF THE CENTER OF WASHINGTON
 HV1122'D.C., 1.0 MILE WEST OF THE JUNCTION OF STATE HIGHWAYS NO. 202 AND
 HV1122'214, ABOUT 025 MILE NORTH OF STATE HIGHWAY NO. 214 AND 0.1 MILE
 HV1122'EAST OF BRIGHTSEAT ROAD.  STATION IS 22 FEET WEST-SOUTHWEST OF THE
 HV1122'SOUTHWEST CORNER OF BARN, 17 FEET SOUTHWEST OF APPROXIMATE
 HV1122'CENTERLINE OF DRIVEWAY AND 19 FEET EAST OF A 15 INCH TREE.  THE MARK
 HV1122'IS SET ABOUT 5 INCHES BELOW THE SURFACE OF GROUND AND THE DISK IS
 HV1122'STAMPED BRIGHT 1958.
 HV1122'
 HV1122'REFERENCE MARK NO. 1 IS 1 FOOT SOUTH OF FENCELINE, 2 FEET SOUTHEAST
 HV1122'OF GATE, 21 FEET EAST OF SOUTHEAST CORNER OF BARN AND 12 FEET NORTH
 HV1122'OF APPROXIMATE CENTERLINE OF FIELD ROAD.  THE MARK PROJECTS 2
 HV1122'INCHES AND THE DISK IS STAMPED BRIGHT NO 1 1958.
 HV1122'
 HV1122'REFERENCE MARK NO. 2 IS 18 FEET EAST OF APPROXIMATE CENTERLINE OF
 HV1122'DRIVEWAY, 1 FOOT EAST OF FENCELINE AND 9-1/2 FEET SOUTH OF SOUTHWEST
 HV1122'CORNER OF SHED.  THE MARK PROJECTS 1 INCH AND THE DISK IS STAMPED
 HV1122'BRIGHT NO 2 1958.
 HV1122'
 HV1122'TRAVERSE STATION SEAT IS 31-1/2 FEET EAST OF APPROXIMATE CENTERLINE
 HV1122'OF ROAD, 29-1/2 FEET NORTHEAST OF UTILITY POLE, 29 FEET NORTHEAST OF
 HV1122'NORTHEAST CORNER OF BRIDGE, 27-1/2 FEET EAST-SOUTHEAST OF A 15 INCH
 HV1122'TREE AND 2 FEET NORTH OF A WITNESS POST.  THE MARK IS A STANDARD
 HV1122'TRAVERSE DISK SET IN A 6X6 INCH CONCRETE MONUMENT, PROJECTS 3
 HV1122'INCHES AND THE DISK IS STAMPED SEAT 1958.
 HV1122'
 HV1122'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 202 AND 214 IN THE
 HV1122'VILLAGE OF LARGO, GO WESTERLY ON STATE HIGHWAY NO. 214 FOR 1.2 MILE
 HV1122'TO A SIDE ROAD RIGHT (BRIGHTSEAT ROAD) AT A STORE ON RIGHT.  TURN
 HV1122'RIGHT AND GO NORTHEASTERLY ON BRIGHTSEAT ROAD FOR 0.25 MILE TO
 HV1122'DRIVEWAY ON RIGHT.  TURN RIGHT AND GO EASTERLY ON DRIVEWAY FOR
 HV1122'0.1 MILE TO LARGE WHITE HOUSE AND STATION AS DESCRIBED.
 HV1122'
 HV1122'TRAVERSE STATION SEAT IS VISIBLE FROM GROUND AND MAY BE USED AS
 HV1122'AZIMUTH MARK.
 HV1122'
 HV1122'TO REACH STATION SEAT FROM STATION BRIGHT, GO WEST ON DRIVEWAY FOR
 HV1122'0.1 MILE TO BRIGHTSEAT ROAD.  TURN LEFT AND GO SOUTHERLY ON
 HV1122'BRIGHTSEAT ROAD FOR 0.25 MILE TO JUNCTION OF STATE HIGHWAY NO. 214.
 HV1122'TURN RIGHT AND GO WEST ON STATE HIGHWAY NO. 214 FOR 0.1 MILE TO
 HV1122'DRIVEWAY LEFT JUST PAST HOUSE AND LAWN ON LEFT.  TURN LEFT AND GO
 HV1122'SOUTHERLY ON FARM DRIVEWAY FOR 0.25 MILE TO SMALL WOODEN BRIDGE AND
 HV1122'STATION AS DESCRIBED.
 HV1122'
 HV1122'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 HV1122
 HV1122                          STATION RECOVERY (1958)
 HV1122
 HV1122'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV1122'0.3 MI NE FROM RANDOLPH VILLAGE.
 HV1122'ABOUT 0.2 MILE NORTH ALONG THE BRIGHTSEAT ROAD FROM THE INTERSECTION
 HV1122'OF STATE HIGHWAY 214 AT RANDOLPH VILLAGE, THENCE 0.1 MILE EAST
 HV1122'ALONG A PRIVATE DRIVEWAY, 32 FEET WEST OF A LARGE UNPAINTED
 HV1122'BARN, 31 FEET SOUTH OF A PEAR TREE, 18 1/2 FEET EAST OF A
 HV1122'LOCUST TREE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 HV1122'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1123 ***********************************************************************
 HV1123  DESIGNATION -  BRIGHT RM 1
 HV1123  PID         -  HV1123
 HV1123  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1123  COUNTRY     -  US
 HV1123  USGS QUAD   -  LANHAM (2016)
 HV1123
 HV1123                         *CURRENT SURVEY CONTROL
 HV1123  ______________________________________________________________________
 HV1123* NAD 83(1986) POSITION- 38 53 43.30   (N) 076 50 59.89   (W)   HD_HELD1
 HV1123* NAVD 88 ORTHO HEIGHT -    50.627 (meters)      166.10  (feet) ADJUSTED
 HV1123  ______________________________________________________________________
 HV1123  GEOID HEIGHT    -        -32.479 (meters)                     GEOID18
 HV1123  DYNAMIC HEIGHT  -         50.599 (meters)      166.01  (feet) COMP
 HV1123  MODELED GRAVITY -    980,080.5   (mgal)                       NAVD 88
 HV1123
 HV1123  VERT ORDER      -  SECOND    CLASS 0
 HV1123
 HV1123.The horizontal coordinates were determined by differentially corrected
 HV1123.hand held GPS observations or other comparable positioning techniques
 HV1123.and have an estimated accuracy of +/- 3 meters.
 HV1123
 HV1123.The orthometric height was determined by differential leveling and
 HV1123.adjusted by the NATIONAL GEODETIC SURVEY
 HV1123.in June 1991.
 HV1123
 HV1123.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1123.GEOID18 height accuracy estimate available here.
 HV1123
 HV1123.Click photographs - Photos may exist for this station.
 HV1123
 HV1123.The dynamic height is computed by dividing the NAVD 88
 HV1123.geopotential number by the normal gravity value computed on the
 HV1123.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1123.degrees latitude (g = 980.6199 gals.).
 HV1123
 HV1123.The modeled gravity was interpolated from observed gravity values.
 HV1123
 HV1123;                    North         East    Units  Estimated Accuracy
 HV1123;SPC MD       -   136,401.0     413,015.1     MT  (+/- 3 meters HH1 GPS) 
 HV1123
 HV1123_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3956606791(NAD 83)
 HV1123
 HV1123                          SUPERSEDED SURVEY CONTROL
 HV1123
 HV1123  NGVD 29 (11/26/84)   50.870  (m)          166.90   (f) ADJUSTED    2 0
 HV1123
 HV1123.Superseded values are not recommended for survey control.
 HV1123
 HV1123.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1123.See file dsdata.pdf to determine how the superseded data were derived.
 HV1123
 HV1123_MARKER: DR = REFERENCE MARK DISK
 HV1123_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1123_STAMPING: BRIGHT NO 1 1958
 HV1123_MARK LOGO: CGS
 HV1123_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1123+STABILITY: SURFACE MOTION
 HV1123
 HV1123  HISTORY     - Date     Condition        Report By
 HV1123  HISTORY     - 1958     MONUMENTED       CGS
 HV1123
 HV1123                          STATION DESCRIPTION
 HV1123
 HV1123'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1123'0.3 MI NE FROM RANDOLPH VILLAGE.
 HV1123'ABOUT 0.2 MILE NORTH ALONG THE BRIGHTSEAT ROAD FROM THE
 HV1123'INTERSECTION OF STATE HIGHWAY 214 AT RANDOLPH VILLAGE, THENCE 0.1
 HV1123'MILE EAST ALONG A PRIVATE DRIVEWAY, NEAR A LARGE BARN, 91.4
 HV1123'FEET EAST OF THE STATION, 21 FEET EAST OF THE SOUTHEAST CORNER
 HV1123'OF THE LARGE BARN, 1 FOOT SOUTH OF A FENCE LINE, SET IN THE
 HV1123'TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1124 ***********************************************************************
 HV1124  DESIGNATION -  BRIGHT RM 2
 HV1124  PID         -  HV1124
 HV1124  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1124  COUNTRY     -  US
 HV1124  USGS QUAD   -  LANHAM (2016)
 HV1124
 HV1124                         *CURRENT SURVEY CONTROL
 HV1124  ______________________________________________________________________
 HV1124* NAD 83(1986) POSITION- 38 53 43.92   (N) 076 51 01.28   (W)   HD_HELD1
 HV1124* NAVD 88 ORTHO HEIGHT -    52.578 (meters)      172.50  (feet) ADJUSTED
 HV1124  ______________________________________________________________________
 HV1124  GEOID HEIGHT    -        -32.478 (meters)                     GEOID18
 HV1124  DYNAMIC HEIGHT  -         52.549 (meters)      172.40  (feet) COMP
 HV1124  MODELED GRAVITY -    980,080.5   (mgal)                       NAVD 88
 HV1124
 HV1124  VERT ORDER      -  SECOND    CLASS 0
 HV1124
 HV1124.The horizontal coordinates were determined by differentially corrected
 HV1124.hand held GPS observations or other comparable positioning techniques
 HV1124.and have an estimated accuracy of +/- 3 meters.
 HV1124
 HV1124.The orthometric height was determined by differential leveling and
 HV1124.adjusted by the NATIONAL GEODETIC SURVEY
 HV1124.in June 1991.
 HV1124
 HV1124.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1124.GEOID18 height accuracy estimate available here.
 HV1124
 HV1124.Click photographs - Photos may exist for this station.
 HV1124
 HV1124.The dynamic height is computed by dividing the NAVD 88
 HV1124.geopotential number by the normal gravity value computed on the
 HV1124.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1124.degrees latitude (g = 980.6199 gals.).
 HV1124
 HV1124.The modeled gravity was interpolated from observed gravity values.
 HV1124
 HV1124;                    North         East    Units  Estimated Accuracy
 HV1124;SPC MD       -   136,420.1     412,981.5     MT  (+/- 3 meters HH1 GPS) 
 HV1124
 HV1124_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3953306811(NAD 83)
 HV1124
 HV1124                          SUPERSEDED SURVEY CONTROL
 HV1124
 HV1124  NGVD 29 (11/26/84)   52.821  (m)          173.30   (f) ADJUSTED    2 0
 HV1124
 HV1124.Superseded values are not recommended for survey control.
 HV1124
 HV1124.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1124.See file dsdata.pdf to determine how the superseded data were derived.
 HV1124
 HV1124_MARKER: DR = REFERENCE MARK DISK
 HV1124_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1124_STAMPING: BRIGHT NO 2 1958
 HV1124_MARK LOGO: CGS
 HV1124_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1124+STABILITY: SURFACE MOTION
 HV1124
 HV1124  HISTORY     - Date     Condition        Report By
 HV1124  HISTORY     - 1958     MONUMENTED       CGS
 HV1124
 HV1124                          STATION DESCRIPTION
 HV1124
 HV1124'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1124'0.3 MI NE FROM RANDOLPH VILLAGE.
 HV1124'ABOUT 0.2 MILE NORTH ALONG THE BRIGHTSEAT ROAD FROM THE INTERSECTION
 HV1124'OF STATE HIGHWAY 214 AT RANDOLPH VILLAGE, THENCE 0.1 MILE EAST
 HV1124'ALONG A PRIVATE DRIVEWAY, NEAR A LARGE BARN, NEAR A TOOL SHED,
 HV1124'78.2 FEET NORTH OF THE STATION, 18 FEET EAST OF THE CENTER LINE
 HV1124'OF A DRIVEWAY LEADING TO A RESIDENCE, 1 FOOT EAST OF A FENCE
 HV1124'LINE, 9 1/2 FEET SOUTH OF THE SOUTHWEST CORNER OF THE TOOL SHED,
 HV1124'SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH ABOVE THE
 HV1124'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4419 ***********************************************************************
 JV4419  DESIGNATION -  BRINK
 JV4419  PID         -  JV4419
 JV4419  STATE/COUNTY-  MD/MONTGOMERY
 JV4419  COUNTRY     -  US
 JV4419  USGS QUAD   -  GAITHERSBURG (2016)
 JV4419
 JV4419                         *CURRENT SURVEY CONTROL
 JV4419  ______________________________________________________________________
 JV4419* NAD 83(1993) POSITION- 39 12 44.96577(N) 077 14 16.47726(W)   ADJUSTED
 JV4419* NAVD 88 ORTHO HEIGHT -   195.6   (meters)      642.    (feet) VERTCON3
 JV4419  ______________________________________________________________________
 JV4419  GEOID HEIGHT    -        -31.825 (meters)                     GEOID18
 JV4419  LAPLACE CORR    -          2.37  (seconds)                    DEFLEC18
 JV4419  HORZ ORDER      -  FIRST
 JV4419
 JV4419.The horizontal coordinates were established by classical geodetic methods
 JV4419.and adjusted by the National Geodetic Survey in November 1994.
 JV4419
 JV4419.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4419.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4419
 JV4419.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4419.GEOID18 height accuracy estimate available here.
 JV4419
 JV4419.Click photographs - Photos may exist for this station.
 JV4419
 JV4419.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4419
 JV4419. The following values were computed from the NAD 83(1993) position.
 JV4419
 JV4419;                    North         East     Units Scale Factor Converg.
 JV4419;SPC MD       -   171,622.168   379,453.167   MT  0.99996707   -0 08 57.6
 JV4419;SPC MD       -   563,063.73  1,244,922.60   sFT  0.99996707   -0 08 57.6
 JV4419;UTM  18      - 4,342,743.494   306,786.405   MT  1.00005968   -1 24 54.9
 JV4419
 JV4419!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4419!SPC MD       -   0.99997431  x   0.99996707  =   0.99994138
 JV4419!UTM  18      -   0.99997431  x   1.00005968  =   1.00003398
 JV4419
 JV4419:                Primary Azimuth Mark                     Grid Az
 JV4419:SPC MD       -  BRINK AZ MK                              208 27 27.5
 JV4419:UTM  18      -  BRINK AZ MK                              209 43 24.8
 JV4419
 JV4419_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0678642743(NAD 83)
 JV4419
 JV4419|---------------------------------------------------------------------|
 JV4419| PID    Reference Object                     Distance      Geod. Az  |
 JV4419|                                                           dddmmss.s |
 JV4419| CJ8146 BRINK AZ MK                                        2081829.9 |
 JV4419| CJ8148 BRINK RM 2                           28.056 METERS 27422     |
 JV4419| JV4420 BRINK WSSC TANK                      29.272 METERS 29951     |
 JV4419| CJ8147 BRINK RM 1                           24.133 METERS 35258     |
 JV4419|---------------------------------------------------------------------|
 JV4419
 JV4419                          SUPERSEDED SURVEY CONTROL
 JV4419
 JV4419  NAD 83(1991)-  39 12 44.96515(N)    077 14 16.47715(W) AD(       ) 1
 JV4419  NAD 83(1986)-  39 12 44.96525(N)    077 14 16.48757(W) AD(       ) 1
 JV4419  NAD 27      -  39 12 44.58337(N)    077 14 17.54417(W) AD(       ) 1
 JV4419  NGVD 29 (07/19/86)  195.8    (m)          642.     (f) VERT ANG       
 JV4419
 JV4419.Superseded values are not recommended for survey control.
 JV4419
 JV4419.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4419.See file dsdata.pdf to determine how the superseded data were derived.
 JV4419
 JV4419_MARKER: DS = TRIANGULATION STATION DISK
 JV4419_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4419_STAMPING: BRINK 1969
 JV4419_MARK LOGO: CGS
 JV4419_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4419+STABILITY: SURFACE MOTION
 JV4419
 JV4419  HISTORY     - Date     Condition        Report By
 JV4419  HISTORY     - 1969     MONUMENTED       CGS
 JV4419  HISTORY     - 19950510 GOOD             USPSQD
 JV4419
 JV4419                          STATION DESCRIPTION
 JV4419
 JV4419'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4419'THE STATION IS ABOUT 3 MILES NORTHEAST OF GERMANTOWN, AT THE BRINK
 JV4419'COMMUNITY, ON A PROMINENT HILL AND NEAR THE BRINK WATER TANK.  IT IS
 JV4419'ON PROPERTY OWNED BY THE WASHINGTON SUBURBAN SANITARY COMMISSION.
 JV4419'
 JV4419'TO REACH THE STATION FROM WHERE STATE HIGHWAY 118 CROSSES INTERSTATE
 JV4419'HIGHWAY 70 S, GO NORTH ON HIGHWAY 118 FOR 1.0 MILE TO A T
 JV4419'INTERSECTION, TURN LEFT AND GO NORTHWEST ON STATE HIGHWAY 355 FOR
 JV4419'0.45 MILE TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO NORTH ON STATE
 JV4419'HIGHWAY 27 FOR 0.5 MILE TO THE AZIMUTH MARK ON THE RIGHT.
 JV4419'CONTINUE NORTH ON HIGHWAY 27 FOR 0.35 MILE TO THE ENTRANCE TO THE
 JV4419'WATER TANK ON THE RIGHT.  TURN RIGHT, PASSING THROUGH 2 LOOKED
 JV4419'GATES AND GO EASTERLY FOR 0.05 MILE TO THE SOUTH CORNER OF A
 JV4419'FENCED AREA AND THE STATION.
 JV4419'
 JV4419'STATION MARK IS A STANDARD DISK, STAMPED BRINK 1969, SET IN THE TOP
 JV4419'OF A ROUND CONCRETE POST THAT IS 12 INCHES IN DIAMETER AND FLUSH WITH
 JV4419'THE GROUND SURFACE.  IT IS 17.2 FEET NORTH OF THE SOUTH CORNER OF
 JV4419'THE FENCED AREA, 13.6 FEET WEST OF A FENCE AND 92.03 FEET
 JV4419'EAST-SOUTHEAST OF THE SOUTHEAST EDGE OF THE WATER TANK FEEDER
 JV4419'PIPE.  THE UNDERGROUND MARK IS 40 INCHES BELOW THE GROUND
 JV4419'SURFACE.
 JV4419'
 JV4419'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED BRINK NO 1 1969, SET
 JV4419'IN THE TOP OF A ROUND CONCRETE POST THAT IS 12 INCHES IN DIAMETER
 JV4419'AND PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 109.3 FEET NORTH OF THE
 JV4419'SOUTH CORNER OF THE FENCED AREA, 1.1 FEET WEST OF THE FENCE AND
 JV4419'ABOUT 1 FOOT HIGHER IN ELEVATION THAN THE STATION.
 JV4419'
 JV4419'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED BRINK NO 2 1969,
 JV4419'CEMENTED IN A DRILL HOLE IN CONCRETE FOOTING FOR THE SOUTH LEG OF
 JV4419'THE WATER TANK.  IT IS 44.3 FEET NORTH OF THE FENCE, 0.7 FEET
 JV4419'NORTHWEST OF THE SOUTH CORNER OF THE CONCRETE FOOTING AND ABOUT
 JV4419'1 FOOT HIGHER IN ELEVATION THAN THE STATION.
 JV4419'
 JV4419'AZIMUTH MARK IS A STANDARD DISK, STAMPED BRINK 1969, SET IN THE TOP
 JV4419'OF A ROUND CONCRETE POST THAT IS 12 INCHES IN DIAMETER AND PROJECTS
 JV4419'4 INCHES ABOVE THE GROUND.  IT IS 41.5 FEET SOUTHEAST OF HIGHWAY
 JV4419'27, 15.0 FEET SOUTHWEST OF THE CENTER OF A FIELD ENTRANCE ROAD,
 JV4419'2.3 FEET EAST OF POWER LINE POLE NUMBERED M 2735 AND 2.1 FEET
 JV4419'SOUTHEAST OF A WITNESS POST.
 JV4419
 JV4419                          STATION RECOVERY (1995)
 JV4419
 JV4419'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4419'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5776 ***********************************************************************
 AA5776  DESIGNATION -  BRINK
 AA5776  PID         -  AA5776
 AA5776  STATE/COUNTY-  MD/MONTGOMERY
 AA5776  COUNTRY     -  US
 AA5776  USGS QUAD   -  GAITHERSBURG (2016)
 AA5776
 AA5776                         *CURRENT SURVEY CONTROL
 AA5776  ______________________________________________________________________
 AA5776* NAD 83(2011) POSITION- 39 12 35.78913(N) 077 14 24.60126(W)   ADJUSTED
 AA5776* NAD 83(2011) ELLIP HT-   158.738 (meters)        (06/27/12)   ADJUSTED
 AA5776* NAD 83(2011) EPOCH   -  2010.00
 AA5776* NAVD 88 ORTHO HEIGHT -   190.6   (meters)      625.    (feet) GPS OBS
 AA5776  ______________________________________________________________________
 AA5776  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5776  GEOID HEIGHT    -         -32.19 (meters)                     GEOID93
 AA5776  GEOID HEIGHT    -        -31.826 (meters)                     GEOID18
 AA5776  NAD 83(2011) X  -  1,093,004.659 (meters)                     COMP
 AA5776  NAD 83(2011) Y  - -4,826,537.318 (meters)                     COMP
 AA5776  NAD 83(2011) Z  -  4,010,503.530 (meters)                     COMP
 AA5776  LAPLACE CORR    -          2.46  (seconds)                    DEFLEC18
 AA5776
 AA5776  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5776  Standards:
 AA5776         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5776            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5776  -------------------------------------------------------------------
 AA5776  NETWORK    2.67   3.82           1.18   0.98   1.95     -0.09914391
 AA5776  -------------------------------------------------------------------
 AA5776  Click here for local accuracies and other accuracy information.
 AA5776
 AA5776.The horizontal coordinates were established by GPS observations
 AA5776.and adjusted by the National Geodetic Survey in June 2012.
 AA5776
 AA5776.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5776.been affixed to the stable North American tectonic plate. See 
 AA5776.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5776
 AA5776.The horizontal coordinates are valid at the epoch date displayed above
 AA5776.which is a decimal equivalence of Year/Month/Day.
 AA5776
 AA5776.The orthometric height was determined by GPS observations and a
 AA5776.high-resolution geoid model.
 AA5776
 AA5776.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5776.GEOID18 height accuracy estimate available here.
 AA5776
 AA5776.Click photographs - Photos may exist for this station.
 AA5776
 AA5776.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5776
 AA5776.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5776
 AA5776.The ellipsoidal height was determined by GPS observations
 AA5776.and is referenced to NAD 83.
 AA5776
 AA5776. The following values were computed from the NAD 83(2011) position.
 AA5776
 AA5776;                    North         East     Units Scale Factor Converg.
 AA5776;SPC MD       -   171,339.692   379,257.529   MT  0.99996681   -0 09 02.7
 AA5776;SPC MD       -   562,136.97  1,244,280.74   sFT  0.99996681   -0 09 02.7
 AA5776;UTM  18      - 4,342,465.383   306,584.555   MT  1.00006064   -1 24 59.7
 AA5776
 AA5776!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5776!SPC MD       -   0.99997510  x   0.99996681  =   0.99994191
 AA5776!UTM  18      -   0.99997510  x   1.00006064  =   1.00003573
 AA5776
 AA5776_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0658442465(NAD 83)
 AA5776
 AA5776                          SUPERSEDED SURVEY CONTROL
 AA5776
 AA5776  NAD 83(2007)-  39 12 35.78944(N)    077 14 24.60212(W) AD(2002.00) 0
 AA5776  ELLIP H (02/10/07)  158.799  (m)                       GP(2002.00)    
 AA5776  ELLIP H (08/30/02)  158.784  (m)                       GP(       ) 4 2
 AA5776  NAD 83(1991)-  39 12 35.78943(N)    077 14 24.60211(W) AD(       ) 1
 AA5776  ELLIP H (06/13/95)  158.731  (m)                       GP(       ) 4 2
 AA5776
 AA5776.Superseded values are not recommended for survey control.
 AA5776
 AA5776.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5776.See file dsdata.pdf to determine how the superseded data were derived.
 AA5776
 AA5776_MARKER: DD = SURVEY DISK
 AA5776_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5776_STAMPING: BRINK 1961
 AA5776_MARK LOGO: MDBCSM
 AA5776_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5776_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5776+STABILITY: SURFACE MOTION
 AA5776_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5776+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 AA5776
 AA5776  HISTORY     - Date     Condition        Report By
 AA5776  HISTORY     - 1961     MONUMENTED       NONE
 AA5776  HISTORY     - 20040322 GOOD             URS
 AA5776  HISTORY     - 20040324 POOR             URS
 AA5776  HISTORY     - 20050405 GOOD             USPSQD
 AA5776  HISTORY     - 20050723 GOOD             GEOCAC
 AA5776
 AA5776                          STATION DESCRIPTION
 AA5776
 AA5776'DESCRIBED BY NATIONAL GEODETIC SURVEY 1961
 AA5776'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5776'6.0 MI (9.7 KM) NORTH OF THE CITY OF GAITHERSBURG.  TO REACH THE
 AA5776'STATION FROM THE JUNCTION OF RIDGE ROAD (S.R. 27) AND FREDERICK ROAD
 AA5776'(S.R. 355) GO NORTH 0.6 MI (1.0 KM) ALONG RIDGE ROAD TO THE STATION ON
 AA5776'THE LEFT AT THE INTERSECTION WITH BRINK ROAD.
 AA5776'
 AA5776'THE STATION IS A DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH IS 2
 AA5776'INCHES BELOW GROUND LEVEL, AND STAMPED "BRINK 1961".  THE DISK IS
 AA5776'LOCATED 16.6 FT (5.1 M) NORTHWEST OF THE EDGE OF PAVEMENT, 43.8 FT
 AA5776'(13.4 M) SOUTH-SOUTHWEST OF THE TRAFFIC LIGHT SUPPORT IN THE SOUTHWEST
 AA5776'CORNER OF THE INTERSECTION, AND 2.3 FT (0.7 M) EAST-SOUTHEAST OF A
 AA5776'CARSONITE WITNESS POST.
 AA5776
 AA5776                          STATION RECOVERY (2004)
 AA5776
 AA5776'RECOVERY NOTE BY URS COMPANY 2004
 AA5776'RECOVERED IN GOOD CONDITION.
 AA5776
 AA5776                          STATION RECOVERY (2004)
 AA5776
 AA5776'RECOVERY NOTE BY URS COMPANY 2004
 AA5776'MARK RECOVERED IN POOR CONDITION.
 AA5776
 AA5776                          STATION RECOVERY (2005)
 AA5776
 AA5776'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 AA5776'RECOVERED IN GOOD CONDITION.
 AA5776
 AA5776                          STATION RECOVERY (2005)
 AA5776
 AA5776'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 AA5776'STATION FOUND AS DESCRIBED AND APPROXIMATELY 32 FEET SOUTH-SOUTHEAST
 AA5776'OF A SMALL CONCRETE PAD APPARENTLY BEING PREPARED FOR A TRAFFIC LIGHT
 AA5776'POLE OR CONTROL BOX. WITNESS POST NOT PROPERLY INSTALLED AND LASHED TO
 AA5776'A WOODEN STAKE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4420 ***********************************************************************
 JV4420  DESIGNATION -  BRINK WSSC TANK
 JV4420  PID         -  JV4420
 JV4420  STATE/COUNTY-  MD/MONTGOMERY
 JV4420  COUNTRY     -  US
 JV4420  USGS QUAD   -  GAITHERSBURG (2016)
 JV4420
 JV4420                         *CURRENT SURVEY CONTROL
 JV4420  ______________________________________________________________________
 JV4420* NAD 83(1993) POSITION- 39 12 45.43817(N) 077 14 17.53556(W)   ADJUSTED
 JV4420  ______________________________________________________________________
 JV4420  GEOID HEIGHT    -        -31.826 (meters)                     GEOID18
 JV4420  LAPLACE CORR    -          2.39  (seconds)                    DEFLEC18
 JV4420  HORZ ORDER      -  THIRD
 JV4420
 JV4420.The horizontal coordinates were established by classical geodetic methods
 JV4420.and adjusted by the National Geodetic Survey in November 1994.
 JV4420
 JV4420.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4420.GEOID18 height accuracy estimate available here.
 JV4420
 JV4420.Click photographs - Photos may exist for this station.
 JV4420
 JV4420.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4420
 JV4420. The following values were computed from the NAD 83(1993) position.
 JV4420
 JV4420;                    North         East     Units Scale Factor Converg.
 JV4420;SPC MD       -   171,636.802   379,427.817   MT  0.99996709   -0 08 58.2
 JV4420;SPC MD       -   563,111.74  1,244,839.43   sFT  0.99996709   -0 08 58.2
 JV4420;UTM  18      - 4,342,758.686   306,761.382   MT  1.00005980   -1 24 55.5
 JV4420
 JV4420_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0676142758(NAD 83)
 JV4420
 JV4420                          SUPERSEDED SURVEY CONTROL
 JV4420
 JV4420  NAD 83(1991)-  39 12 45.43756(N)    077 14 17.53543(W) AD(       ) 3
 JV4420  NAD 83(1986)-  39 12 45.43653(N)    077 14 17.54665(W) AD(       ) 3
 JV4420  NAD 27      -  39 12 45.05638(N)    077 14 18.60301(W) AD(       ) 3
 JV4420
 JV4420.Superseded values are not recommended for survey control.
 JV4420
 JV4420.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4420.See file dsdata.pdf to determine how the superseded data were derived.
 JV4420
 JV4420_MARKER: 53 = ELEVATED TANK
 JV4420_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4420+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4420
 JV4420  HISTORY     - Date     Condition        Report By
 JV4420  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4420  HISTORY     - 1986     GOOD             NGS
 JV4420  HISTORY     - 20031102 GOOD             USPSQD
 JV4420  HISTORY     - 20050303 GOOD             USPSQD
 JV4420
 JV4420                          STATION DESCRIPTION
 JV4420
 JV4420'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4420'THE STATION IS THE CENTER OF THE FEEDER PIPE OF THE 120 FOOT
 JV4420'HIGH BRINK WASHINGTON SUBURBAN SANITARY COMMISSION ELEVATED
 JV4420'TANK, LOCATED IN THE COMMUNITY OF BRINK.
 JV4420'
 JV4420'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION BRINK,
 JV4420'THE DISTANCE BEING 96.11 FEET OR 29.294 METERS WEST-NORTHWEST OF
 JV4420'TRIANGULATION STATION BRINK.
 JV4420'
 JV4420'THE CENTER OF THE TOP OF THE TANK WAS ALSO INTERSECTED.
 JV4420'
 JV4420'TO REACH THE STATION FROM WHERE STATE HIGHWAY 118 CROSSES
 JV4420'INTERSTATE HIGHWAY 270,  GO NORTH ON HIGHWAY 118 FOR 1.0 MILE
 JV4420'TO A T INTERSECTION, TURN LEFT AND GO NORTHWEST ON STATE HIGHWAY
 JV4420'355 FOR 0.45 MILE TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO NORTH
 JV4420'ON STATE HIGHWAY 27 FOR 0.85 MILE TO THE ENTRANCE OF THE WATER TANK
 JV4420'ON THE RIGHT.  TURN RIGHT, PASSING THROUGH 2 LOCKED GATES AND GO
 JV4420'EASTERLY FOR 0.05 MILE TO THE STATION INSIDE A FENCED AREA.
 JV4420
 JV4420                          STATION RECOVERY (1986)
 JV4420
 JV4420'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 JV4420'RECOVERED IN GOOD CONDITION.
 JV4420
 JV4420                          STATION RECOVERY (2003)
 JV4420
 JV4420'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4420'RECOVERED IN GOOD CONDITION.
 JV4420
 JV4420                          STATION RECOVERY (2005)
 JV4420
 JV4420'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4420'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6785 ***********************************************************************
 HV6785  DESIGNATION -  BRISCOE
 HV6785  PID         -  HV6785
 HV6785  STATE/COUNTY-  MD/CALVERT
 HV6785  COUNTRY     -  US
 HV6785  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6785
 HV6785                         *CURRENT SURVEY CONTROL
 HV6785  ______________________________________________________________________
 HV6785* NAD 83(1993) POSITION- 38 25 53.79630(N) 076 33 55.16380(W)   ADJUSTED
 HV6785* NAVD 88 ORTHO HEIGHT -    35.    (meters)      115.    (feet) SCALED
 HV6785  ______________________________________________________________________
 HV6785  GEOID HEIGHT    -        -34.032 (meters)                     GEOID18
 HV6785  LAPLACE CORR    -         -5.21  (seconds)                    DEFLEC18
 HV6785  HORZ ORDER      -  FIRST
 HV6785
 HV6785.The horizontal coordinates were established by classical geodetic methods
 HV6785.and adjusted by the National Geodetic Survey in November 1994.
 HV6785
 HV6785.The orthometric height was scaled from a topographic map.
 HV6785
 HV6785.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6785.GEOID18 height accuracy estimate available here.
 HV6785
 HV6785.Click photographs - Photos may exist for this station.
 HV6785
 HV6785.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6785
 HV6785. The following values were computed from the NAD 83(1993) position.
 HV6785
 HV6785;                    North         East     Units Scale Factor Converg.
 HV6785;SPC MD       -    85,002.226   437,952.966   MT  0.99997971   +0 16 22.1
 HV6785;SPC MD       -   278,878.14  1,436,850.69   sFT  0.99997971   +0 16 22.1
 HV6785;UTM  18      - 4,254,865.043   363,374.272   MT  0.99982988   -0 58 23.2
 HV6785
 HV6785!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6785!SPC MD       -   0.99999989  x   0.99997971  =   0.99997960
 HV6785!UTM  18      -   0.99999989  x   0.99982988  =   0.99982977
 HV6785
 HV6785:                Primary Azimuth Mark                     Grid Az
 HV6785:SPC MD       -  BRISCOE RM 2 AZIMUTH                     205 18 15.3
 HV6785:UTM  18      -  BRISCOE RM 2 AZIMUTH                     206 33 00.6
 HV6785
 HV6785_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6337454865(NAD 83)
 HV6785
 HV6785|---------------------------------------------------------------------|
 HV6785| PID    Reference Object                     Distance      Geod. Az  |
 HV6785|                                                           dddmmss.s |
 HV6785| CX2127 BRISCOE RM 1                         25.481 METERS 13540     |
 HV6785| CX2130 BRISCOE RM 4 RESET                                 20347     |
 HV6785| CX2128 BRISCOE RM 2 AZIMUTH                               2053437.4 |
 HV6785| CX2129 BRISCOE RM 3                         45.506 METERS 27419     |
 HV6785|---------------------------------------------------------------------|
 HV6785
 HV6785                          SUPERSEDED SURVEY CONTROL
 HV6785
 HV6785  NAD 83(1991)-  38 25 53.79641(N)    076 33 55.16465(W) AD(       ) 1
 HV6785  NAD 83(1986)-  38 25 53.79583(N)    076 33 55.17853(W) AD(       ) 1
 HV6785  NAD 27      -  38 25 53.34700(N)    076 33 56.33900(W) AD(       ) 1
 HV6785
 HV6785.Superseded values are not recommended for survey control.
 HV6785
 HV6785.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6785.See file dsdata.pdf to determine how the superseded data were derived.
 HV6785
 HV6785_MARKER: DS = TRIANGULATION STATION DISK
 HV6785_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6785_STAMPING: BRISCOE 1934
 HV6785_MARK LOGO: CGS
 HV6785_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6785+STABILITY: SURFACE MOTION
 HV6785
 HV6785  HISTORY     - Date     Condition        Report By
 HV6785  HISTORY     - 1934     MONUMENTED       CGS
 HV6785  HISTORY     - 1942     GOOD             CGS
 HV6785  HISTORY     - 1943     GOOD             CGS
 HV6785  HISTORY     - 1955     GOOD             CGS
 HV6785  HISTORY     - 1960     GOOD             CGS
 HV6785  HISTORY     - 1982     GOOD             MDDNR
 HV6785
 HV6785                          STATION DESCRIPTION
 HV6785
 HV6785'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6785'STATION IS ABOUT 1/2 MILE N OF PARKERS WHARF, 4 MILES SW OF PORT
 HV6785'REPUBLIC, ON PROPERTY OWNED BY MRS. PHILLIP BISCOE.
 HV6785'
 HV6785'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HV6785'BRONZE DISKS SET IN CONCRETE AS DESCRIBED.
 HV6785'
 HV6785'STATION MARK IS FLUSH WITH THE GROUND.
 HV6785'
 HV6785'REFERENCE MARK NO. 1 PROJECTS 6 INCHES ABOVE GROUND, IS SSE OF
 HV6785'STATION, 39 FEET SE OF THE CENTER LINE OF DRIVE, 44 FEET S OF
 HV6785'48-INCH LINDEN TREE, 3 FEET E OF 30-INCH HICKORY TREE, 1 FOOT N OF
 HV6785'FENCE.
 HV6785'
 HV6785'REFERENCE MARK NO. 2 PROJECTS 4 INCHES ABOVE GROUND, IS 0.5 MILE
 HV6785'SSW OF STATION, 6 PACES NE OF CENTER LINE OF ROAD, IN RAIL FENCE
 HV6785'LINE, 4 PACES SE OF TELEPHONE NO.47, 62 PACES SE OF SE CORNER OF
 HV6785'BARN WHERE ROAD TURNS S.
 HV6785'
 HV6785'REFERENCE MARK NO. 3 IS FLUSH WITH THE GROUND, IS W OF STATION, 4
 HV6785'YARDS SE OF SE EDGE OF HIGHWAY, 13 PACES NE OF 16-INCH WALNUT
 HV6785'TREE, 89 FEET W OF 36-INCH LINDEN TREE.
 HV6785'
 HV6785'TO REACH FROM PORT REPUBLIC, MARYLAND, GO E ON STATE HIGHWAY 2
 HV6785'ABOUT 1/2 MILE TO BROOM ISLAND ROAD TURN LEFT (S), FROM HERE GO
 HV6785'2.2 MILES TO ROAD FORKS AT MUTUAL POST OFFICE.  HERE TAKE RIGHT
 HV6785'HAND ROAD AND FOLLOW FOR 2.0 MILES TO PARKERS WHARF ROAD, FOLLOW
 HV6785'THIS ROAD 1.0 MILE TO BARNS ON RIGHT AND HOUSE ON LEFT, TURN LEFT
 HV6785'UP DRIVE TO STATION IN FRONT OF HOUSE.  THE STATION IS ON THE
 HV6785'LAWN IN FRONT OF THE HOUSE IN A LITTLE CIRCULAR PARK FORMED BY THE
 HV6785'DRIVE TO THE HOUSE, STATION IS 86 FEET S OF SW CORNER OF THE
 HV6785'HOUSE, 58 FEET NE OF SW POINT OF BLUFF, 43 FEET S OF 48-INCH
 HV6785'LINDEN TREE, 33 FEET E OF 24-INCH LOCUST TREE, 54 FEET NW OF
 HV6785'36-INCH LINDEN TREE.
 HV6785'
 HV6785'A 4-FOOT STAND USED.
 HV6785
 HV6785                          STATION RECOVERY (1942)
 HV6785
 HV6785'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6785'THE STATION AND ALL MARKS RECOVERED AS DESCRIBED AND IN GOOD
 HV6785'CONDITION.  FOLLOWING IS A COMPLETE NEW DESCRIPTION--
 HV6785'
 HV6785'STATION IS LOCATED ABOUT 4 MILES SW OF PORT REPUBLIC ON PROPERTY
 HV6785'OWNED BY MRS. PHILLIP BRISCOE.  IT IS ON THE LAWN IN FRONT OF THE
 HV6785'HOUSE IN A SMALL CIRCULAR PARK FORMED BY THE DRIVE INTO THE HOUSE.
 HV6785'MARK IS STAMPED BRISCOE 1934 AND IS SET FLUSH WITH THE GROUND.
 HV6785'
 HV6785'REFERENCE MARK NO. 1 IS LOCATED SSW OF THE STATION, 40 FEET SE OF
 HV6785'THE CENTER OF THE DRIVEWAY AND 3 FEET E OF A LARGE HICKORY TREE.
 HV6785'IT PROJECTS 6 INCHES AND IS STAMPED BRISCOE NO. 1 1934.
 HV6785'
 HV6785'REFERENCE MARK NO. 3 IS LOCATED 6 FEET E OF THE TOP OF THE HIGHWAY
 HV6785'CUT.  IT IS FLUSH WITH THE GROUND AND IS STAMPED BRISCOE NO. 3 1934
 HV6785'
 HV6785'REFERENCE MARK NO. 2 (USED AS THE AZIMUTH MARK) IS LOCATED ABOUT
 HV6785'0.5 MILE SSW OF THE STATION.  IT IS INSIDE A RAIL FENCE LINE 12
 HV6785'FEET E OF A TELEPHONE POLE AND 125 FEET E OF A BARN AT A POINT
 HV6785'WHERE THE ROAD TURNS TO THE LEFT.  TO REACH FROM THE STATION GO S
 HV6785'ON THE HIGHWAY FOR 0.45 MILE TO A CURVE TO THE LEFT IN THE ROAD
 HV6785'AND A BARN ON THE RIGHT.  THE MARK IS 62 PACES E AS DESCRIBED.
 HV6785'
 HV6785'TO REACH THE STATION FROM PRINCE FREDERICK GO S ON STATE HIGHWAY 2
 HV6785'FOR 3.8 MILES TO BROOMES ISLAND ROAD TO ROAD TO RIGHT.  TURN RIGHT
 HV6785'AND GO 2.3 MILES TO A ROAD FORKS AT MUTUAL.  TAKE THE RIGHT FORK
 HV6785'AND GO 2.0 MILES, THEN RIGHT FORK AGAIN AND GO 1.0 MILE TO A
 HV6785'FARMHOUSE ON THE LEFT AT THE TOP OF A SMALL HILL.  TURN LEFT INTO
 HV6785'THE FARM YARD FOR ABOUT 100 YARDS TO THE CIRCULAR DRIVEWAY AND THE
 HV6785'STATION.
 HV6785'
 HV6785'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT REKAR.
 HV6785'
 HV6785'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT MARSHALL.
 HV6785'
 HV6785'A 64-FOOT TOWER WILL SEE A 74-FOOT LIGHT AT POINT FARM.
 HV6785'
 HV6785'A 4-FOOT LIGHT AT HUTCHINS IS VISIBLE FROM THE GROUND.
 HV6785'
 HV6785'A 113-FOOT LIGHT AT SPALDING IS VISIBLE FROM THE GROUND.
 HV6785'
 HV6785'A 4-FOOT LIGHT AT COLE 2 IS VISIBLE FROM THE GROUND.
 HV6785'
 HV6785'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT LAUREL.
 HV6785
 HV6785                          STATION RECOVERY (1943)
 HV6785
 HV6785'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV6785'THE STATION AND ALL MARKS RECOVERED AS DESCRIBED BY J.B., JR. IN
 HV6785'1934 AND FOUND IN GOOD CONDITION.  THE 1942 DESCRIPTION WAS NOT
 HV6785'AVAILABLE.  FOLLOWING IS A COMPLETE NEW DESCRIPTION--
 HV6785'
 HV6785'THE STATION IS LOCATED ABOUT 7 MILES SOUTH SOUTHEAST OF PRINCE
 HV6785'FREDERICK ON PROPERTY OWNED BY MRS. PHILIP BRISCOE.  IT IS SET IN
 HV6785'THE LAWN IN FRONT OF THE HOUSE IN A SMALL CIRCLE FORMED BY THE
 HV6785'DRIVEWAY.  IT IS 86 FEET SOUTH OF THE SOUTHWEST CORNER OF THE
 HV6785'HOUSE, 43 FEET SOUTH OF A 48-INCH TREE, AND 33 FEET EAST OF A
 HV6785'24-INCH LOCUST TREE.  IT IS FLUSH WITH THE GROUND AND THE DISK IS
 HV6785'STAMPED BRISCOE 1934.
 HV6785'
 HV6785'REFERENCE MARK NO. 1 IS SOUTH SOUTHEAST OF THE STATION, 3 FEET
 HV6785'NORTH OF A 30-INCH HICKORY TREE.  IT PROJECTS 6 INCHES AND THE
 HV6785'DISK IS STAMPED BRISCOE NO. 1 1934.
 HV6785'
 HV6785'REFERENCE MARK NO. 3 IS WEST OF THE STATION AT THE EAST EDGE OF
 HV6785'THE ROAD CUT.  IT IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED
 HV6785'BRISCOE NO. 3 1934.
 HV6785'
 HV6785'REFERENCE MARK NO. 2 USED AS THE AZIMUTH MARK IS LOCATED 0.5 MILE
 HV6785'BY ROAD SOUTH SOUTHWEST OF THE STATION, 18 FEET NORTHEAST OF THE
 HV6785'CENTER OF THE ROAD, 12 FEET SOUTHEAST OF TELEPHONE POLE NO. 47, 3
 HV6785'FEET NORTH OF A RAIL FENCE AND ABOUT 60 YARDS SOUTHEAST OF A BARN
 HV6785'WHERE THE ROAD CURVES TO THE SOUTHEAST.  IT PROJECTS 4 INCHES AND
 HV6785'THE DISK IS STAMPED BRISCOE NO. 2 1934.
 HV6785'
 HV6785'TO REACH THE STATION FROM PRINCE FREDERICK GO SOUTHEASTERLY ON
 HV6785'STATE HIGHWAY 2 FOR 3.8 MILES TO BROOMES ISLAND ROAD.  TURN RIGHT
 HV6785'AND GO 2.3 MILES TO MUTUAL.  KEEP STRAIGHT AHEAD (RIGHT) FOR 2.0
 HV6785'MILES TO A Y.  TAKE RIGHT FORK (PARKERS WHARF ROAD) AND GO 1.0
 HV6785'MILE TO THE BRISCOE FARM ON THE LEFT.  TURN LEFT INTO DRIVEWAY TO
 HV6785'THE FRONT OF THE HOUSE AND THE STATION AS DESCRIBED.
 HV6785'
 HV6785'A 77 FOOT TOWER WILL SEE A 100-FOOT LIGHT AT SIMS.
 HV6785
 HV6785                          STATION RECOVERY (1955)
 HV6785
 HV6785'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (CMT)
 HV6785'STATION WAS RECOVERED AS DESCRIBED.  THE AZIMUTH MARK (REFERENCE
 HV6785'MARK 2) HAD BEEN DESTROYED BY ROAD CONSTRUCTION.  A NEW AZIMUTH
 HV6785'MARK WAS ESTABLISHED AT THIS TIME.  A DESCRIPTION OF THE AZIMUTH
 HV6785'MARK FOLLOWS--
 HV6785'
 HV6785'REFERENCE MARK 4 (AZIMUTH MARK) IS 15 FT. S OF THE CENTER OF A
 HV6785'DIRT ROAD, AND 6 FT. N OF A 6-IN. CEDAR TREE.  THE MARK PROJECTS 6
 HV6785'IN., AND THE DISK IS STAMPED BRISCOE NO 4 1934 RESET 1955.
 HV6785'
 HV6785'TO REACH REFERENCE MARK 4 (AZIMUTH MARK), GO S ON A DIRT ROAD FROM
 HV6785'THE STATION FOR 0.5 MI. TO THE MARK ON THE RIGHT AS DESCRIBED.
 HV6785
 HV6785                          STATION RECOVERY (1960)
 HV6785
 HV6785'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6785'THE STATION WAS RECOVERED AS DESCRIBED BY G.W.L. IN 1942 AND 1943
 HV6785'WITH THE FOLLOWING CORRECTIONS TO THE REFERENCE MARK NOTES.
 HV6785'
 HV6785'R.M. NO 1 IS 83.28 FEET IN HORIZONTAL DISTANCE FROM THE STATION.
 HV6785'THE HICKORY TREE 3 FEET SOUTH OF THE STATION HAS BEEN REMOVED.
 HV6785'
 HV6785'R.M. NO.3 HAS ERODED OUT OF THE BANK AND WASHED AWAY.
 HV6785'
 HV6785'R.M. NO. 4 WAS RECOVERED AS DESCRIBED BY C.M.T. IN 1955 EXCEPT
 HV6785'THAT THE DIRT ROAD MENTIONED IS NOW HARD SURFACED.
 HV6785
 HV6785                          STATION RECOVERY (1982)
 HV6785
 HV6785'RECOVERY NOTE BY MD DEPT OF NAT RES 1982 (LW)
 HV6785'BRISCOE 1934 RECOVERED EXCELLENT FOUND AS DESCRIBED IN RECOVERY
 HV6785'NOTE OF GEH IN 9/7/76 3 INCH BELOW.
 HV6785'
 HV6785'BRISCOE NO 1 RECOVERED EXCELLENT FOUND AS DESCRIBED.
 HV6785'
 HV6785'BRISCOE NO 4 RESET 1955-1934- EXCELLENT IS 7.2 FEET E OF 10 INCH
 HV6785'CEDAR.  13 FEET SW OF TAR AND CHIP ROAD, 16.55 FEET E OF ELECTRIC
 HV6785'POLE, PROJECTS 4 INCH V. G. FROM STATION.
 HV6785'
 HV6785'RM 3 SEARCHED, FOR, NOT FOUND - MEASUREMENTS FROM MARK AND REF
 HV6785'OBJECTS PLACE IT 2 FEET W OF EDGE OF ROAD CUT, PROBABLY DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6791 ***********************************************************************
 HV6791  DESIGNATION -  BRISCOE
 HV6791  PID         -  HV6791
 HV6791  STATE/COUNTY-  MD/ST MARYS
 HV6791  COUNTRY     -  US
 HV6791  USGS QUAD   -  HOLLYWOOD (2016)
 HV6791
 HV6791                         *CURRENT SURVEY CONTROL
 HV6791  ______________________________________________________________________
 HV6791* NAD 83(1993) POSITION- 38 21 38.49002(N) 076 30 18.30958(W)   ADJUSTED
 HV6791* NAVD 88 ORTHO HEIGHT -    35.    (meters)      115.    (feet) SCALED
 HV6791  ______________________________________________________________________
 HV6791  GEOID HEIGHT    -        -34.227 (meters)                     GEOID18
 HV6791  LAPLACE CORR    -         -4.73  (seconds)                    DEFLEC18
 HV6791  HORZ ORDER      -  SECOND
 HV6791
 HV6791.The horizontal coordinates were established by classical geodetic methods
 HV6791.and adjusted by the National Geodetic Survey in November 1994.
 HV6791
 HV6791.The orthometric height was scaled from a topographic map.
 HV6791
 HV6791.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6791.GEOID18 height accuracy estimate available here.
 HV6791
 HV6791.Click photographs - Photos may exist for this station.
 HV6791
 HV6791.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6791
 HV6791. The following values were computed from the NAD 83(1993) position.
 HV6791
 HV6791;                    North         East     Units Scale Factor Converg.
 HV6791;SPC MD       -    77,157.015   443,255.098   MT  0.99999000   +0 18 38.2
 HV6791;SPC MD       -   253,139.31  1,454,246.10   sFT  0.99999000   +0 18 38.2
 HV6791;UTM  18      - 4,246,907.747   368,503.804   MT  0.99981295   -0 56 03.1
 HV6791
 HV6791!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6791!SPC MD       -   0.99999992  x   0.99999000  =   0.99998992
 HV6791!UTM  18      -   0.99999992  x   0.99981295  =   0.99981287
 HV6791
 HV6791:                Primary Azimuth Mark                     Grid Az
 HV6791:SPC MD       -  HELLEN                                   108 04 08.3
 HV6791:UTM  18      -  HELLEN                                   109 18 49.6
 HV6791
 HV6791_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6850346907(NAD 83)
 HV6791
 HV6791|---------------------------------------------------------------------|
 HV6791| PID    Reference Object                     Distance      Geod. Az  |
 HV6791|                                                           dddmmss.s |
 HV6791| HV6726 HELLEN                              APPROX. 2.5 KM 1082246.5 |
 HV6791| CX2131 BRISCOE RM                           12.520 METERS 28024     |
 HV6791|---------------------------------------------------------------------|
 HV6791
 HV6791                          SUPERSEDED SURVEY CONTROL
 HV6791
 HV6791  NAD 83(1991)-  38 21 38.48972(N)    076 30 18.30960(W) AD(       ) 2
 HV6791  NAD 83(1986)-  38 21 38.48940(N)    076 30 18.32371(W) AD(       ) 2
 HV6791  NAD 27      -  38 21 38.03500(N)    076 30 19.48400(W) AD(       ) 2
 HV6791  USSD        -  38 21 38.40400(N)    076 30 19.23200(W) AD(       ) 3
 HV6791
 HV6791.Superseded values are not recommended for survey control.
 HV6791
 HV6791.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6791.See file dsdata.pdf to determine how the superseded data were derived.
 HV6791
 HV6791_MARKER: N = NAIL
 HV6791_SETTING: 0 = UNSPECIFIED SETTING
 HV6791
 HV6791  HISTORY     - Date     Condition        Report By
 HV6791  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6791  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV6791  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6791
 HV6791                          STATION DESCRIPTION
 HV6791
 HV6791'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6791'STATION IS ON THE SW SHORE OF PATUXENT RIVER, ABOUT 1/4 MILE NW OF
 HV6791'ST. CUTHBERT WHARF, IN A CULTIVATED FIELD, ABOUT 20 FEET ABOVE
 HV6791'HIGH WATER, 80 YARDS SW OF TREES ON BANK, 50 YARDS SE OF A CREEK
 HV6791'BED, 46 YARDS NW OF CLUMP OF TREES, 105 YARDS E OF CORNER OF
 HV6791'FENCE ON ROAD, AND ABOUT 300 YARDS NE OF ANOTHER FENCE WITH WOODS
 HV6791'BACK OF IT.  SURFACE MARK IS NAIL IN STUB WITH TOP FLUSH WITH
 HV6791'SURFACE OF GROUND.  UNDERGROUND MARK IS MARKED BY A HOLE IN THE
 HV6791'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6791'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV6791'BURIED 11 INCHES BELOW SURFACE OF GROUND.  REFERENCE MARK IS
 HV6791'SIMILAR TO UNDERGROUND MARK, EXCEPT, THAT TOP PROJECTS 5 INCHES
 HV6791'ABOVE GROUND.  IT IS 12.52 METERS (41.1 FEET), FROM STATION N 79
 HV6791'DEG 35 MIN W.  DISTANCES AND BEARINGS FROM THE STATION OF OTHER
 HV6791'POINTS OF REFERENCE ARE AS FOLLOWS--LARGE TWO-FORKED TREE, 130
 HV6791'YARDS, S 57 DEG 40 MIN W.  CORNER OF RAIL FENCE AND TREE, 105
 HV6791'YARDS, S 64 DEG 57 MIN W.  LARGE CHERRY TREE OTHER SIDE OF CREEK,
 HV6791'68 YARDS, N 56 DEG 37 MIN W.  LEFT CHIMNEY OF HOUSE ON OPPOSITE
 HV6791'SIDE WITH THREE DORMER WINDOWS, 1-1/2 MILES, N 53 DEG 17 MIN E.
 HV6791'CEDAR TREE, 80 YARDS, N 57 DEG 22 MIN E.  NEAR CORNER OF HOUSE,
 HV6791'3/4 MILE, S 26 DEG 26 MIN E.  LEFT END OF PEAK OF ROOF OF BARN,
 HV6791'3/4 MILE, S 14 DEG 19 MIN E.
 HV6791
 HV6791                          STATION RECOVERY (1930)
 HV6791
 HV6791'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6791'STATION LOST.  TENANT ON FARM DID NOT KNOW ANYTHING ABOUT IT.
 HV6791'SEARCHED ABOUT TWO HOURS.
 HV6791
 HV6791                          STATION RECOVERY (1943)
 HV6791
 HV6791'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6791'A THOROUGH SEARCH WAS MADE FOR THIS STATION BUT NO TRACE OF IT WAS
 HV6791'FOUND.  IT IS BELIEVED TO HAVE WASHED OUT.
 HV6791'
 HV6791'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4942 ***********************************************************************
 HV4942  DESIGNATION -  BRISCOE 2
 HV4942  PID         -  HV4942
 HV4942  STATE/COUNTY-  MD/CHARLES
 HV4942  COUNTRY     -  US
 HV4942  USGS QUAD   -  MOUNT VERNON (2019)
 HV4942
 HV4942                         *CURRENT SURVEY CONTROL
 HV4942  ______________________________________________________________________
 HV4942* NAD 83(1993) POSITION- 38 40 52.78769(N) 077 06 21.33903(W)   ADJUSTED
 HV4942* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV4942  ______________________________________________________________________
 HV4942  GEOID HEIGHT    -        -32.416 (meters)                     GEOID18
 HV4942  LAPLACE CORR    -         -1.82  (seconds)                    DEFLEC18
 HV4942  HORZ ORDER      -  THIRD
 HV4942
 HV4942.The horizontal coordinates were established by classical geodetic methods
 HV4942.and adjusted by the National Geodetic Survey in November 1994.
 HV4942
 HV4942.The orthometric height was scaled from a topographic map.
 HV4942
 HV4942.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4942.GEOID18 height accuracy estimate available here.
 HV4942
 HV4942.Click photographs - Photos may exist for this station.
 HV4942
 HV4942.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4942
 HV4942. The following values were computed from the NAD 83(1993) position.
 HV4942
 HV4942;                    North         East     Units Scale Factor Converg.
 HV4942;SPC MD       -   112,636.933   390,783.274   MT  0.99995558   -0 03 59.3
 HV4942;SPC MD       -   369,543.00  1,282,094.79   sFT  0.99995558   -0 03 59.3
 HV4942;SPC VA N     - 2,113,547.354 3,621,292.462   MT  0.99994900   +0 52 12.2
 HV4942;SPC VA N     - 6,934,196.61 11,880,857.02   sFT  0.99994900   +0 52 12.2
 HV4942;UTM  18      - 4,283,518.897   316,819.778   MT  1.00001322   -1 18 59.6
 HV4942
 HV4942!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4942!SPC MD       -   1.00000435  x   0.99995558  =   0.99995993
 HV4942!SPC VA N     -   1.00000435  x   0.99994900  =   0.99995335
 HV4942!UTM  18      -   1.00000435  x   1.00001322  =   1.00001757
 HV4942
 HV4942:                Primary Azimuth Mark                     Grid Az
 HV4942:SPC MD       -  WHITESTONE POINT                         253 11 51.3
 HV4942:SPC VA N     -  WHITESTONE POINT                         252 15 39.8
 HV4942:UTM  18      -  WHITESTONE POINT                         254 26 51.6
 HV4942
 HV4942_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1681983518(NAD 83)
 HV4942
 HV4942|---------------------------------------------------------------------|
 HV4942| PID    Reference Object                     Distance      Geod. Az  |
 HV4942|                                                           dddmmss.s |
 HV4942| HV4941 MCLANE                              436.059 METERS 2014339.2 |
 HV4942| HV4967 HYDRO SIG S MARSHALL HALL            35.817 METERS 23002     |
 HV4942| DC6731 BRISCOE 2 RM 2                       14.680 METERS 23937     |
 HV4942| HV5047 WHITESTONE POINT                    APPROX. 2.4 KM 2530752.0 |
 HV4942| DC6730 BRISCOE 2 RM 1                       15.150 METERS 35439     |
 HV4942|---------------------------------------------------------------------|
 HV4942
 HV4942                          SUPERSEDED SURVEY CONTROL
 HV4942
 HV4942  NAD 83(1991)-  38 40 52.78560(N)    077 06 21.34206(W) AD(       ) 3
 HV4942  NAD 83(1986)-  38 40 52.78638(N)    077 06 21.35363(W) AD(       ) 3
 HV4942  NAD 27      -  38 40 52.36500(N)    077 06 22.43300(W) AD(       ) 3
 HV4942
 HV4942.Superseded values are not recommended for survey control.
 HV4942
 HV4942.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4942.See file dsdata.pdf to determine how the superseded data were derived.
 HV4942
 HV4942_MARKER: DS = TRIANGULATION STATION DISK
 HV4942_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4942_STAMPING: BRISCOE 2 1928
 HV4942_MARK LOGO: CGS
 HV4942_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4942+STABILITY: SURFACE MOTION
 HV4942
 HV4942  HISTORY     - Date     Condition        Report By
 HV4942  HISTORY     - 1928     MONUMENTED       CGS
 HV4942  HISTORY     - 1929     GOOD             CGS
 HV4942  HISTORY     - 1938     MARK NOT FOUND   CGS
 HV4942  HISTORY     - 1948     MARK NOT FOUND   CGS
 HV4942  HISTORY     - 1959     MARK NOT FOUND   CGS
 HV4942
 HV4942                          STATION DESCRIPTION
 HV4942
 HV4942'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4942'STATION IS ON THE E SHORE OF POTOMAC RIVER JUST S OF FIRST POINT
 HV4942'S OF MARSHALL HALL ON THE CULTIVATED TOBACCO FIELD BELONGING TO
 HV4942'MR. TIBBETTS.  STATION IS BACK FROM THE EDGE OF THE BLUFF ABOUT 15
 HV4942'FEET.  MARK IS ABOUT 1 FOOT BELOW SURFACE OF FIELD STAMPED BRISCOE
 HV4942'2 1928.  SEARCH WAS MADE FOR MARK ESTABLISHED BY P.C. DORAN BUT
 HV4942'IT WAS SET TWO FEET BELOW SURFACE AND AS TOBACCO WAS GROWING ONLY
 HV4942'A LIMITED AREA WAS AVAILABLE FOR SEARCHING.  HIS MARK STAMPED
 HV4942'BRISCOE 1928.
 HV4942'
 HV4942'UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV4942'CONCRETE.
 HV4942'
 HV4942'REFERENCE MARKS NOS.1 AND 2 ARE JUST BACK OF THE EDGE OF THE
 HV4942'BLUFF TO THE NE OF STATION FLUSH WITH SURFACE OF GROUND AND
 HV4942'STAMPED BRISCOE NO.1 1928 AND BRISCOE NO.2 1928.
 HV4942'
 HV4942'HEIGHT OF SIGNAL ABOVE STATION MARK - 3.0 METERS.
 HV4942
 HV4942                          STATION RECOVERY (1929)
 HV4942
 HV4942'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (EBL)
 HV4942'THE STATION WAS RECOVERED ACCORDING TO THE DESCRIPTION OF CHARLES
 HV4942'PIERCE, IN 1928.  THE MARK FOUND HAD A SIGNAL STANDING, AND WAS
 HV4942'STAMPED BRISCOE 2 1928.  A LARGE LOCUST TREE, STANDING DIRECTLY
 HV4942'BETWEEN THE STATION AND THE SHORE WAS CUT IN CLEARING LINES OF
 HV4942'SIGHT, WHICH FACT SHOULD AID IN THE RECOVERY OF THE STATION.
 HV4942
 HV4942                          STATION RECOVERY (1938)
 HV4942
 HV4942'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV4942'BOTH REFERENCE MARKS AND THE NEARBY TRIANGULATION STATION
 HV4942'U.S.E. HYDROGRAPHIC SIGNAL, 1928 ARE DESTROYED.  THESE MARKS WERE
 HV4942'FOUND WHERE THEY HAD FALLEN OFF THE CAVING BLUFF.  THE STATION
 HV4942'MARK OF BRISCOE 2 IS PROBABLY STILL IN EXISTENCE, BUT DUE TO THE
 HV4942'FACT THAT THE REFERENCE MARKS ARE GONE AND THE MARK IS SET BELOW
 HV4942'THE SURFACE, IT CAN ONLY BE RECOVERED BY MEANS OF ANGLES.
 HV4942
 HV4942                          STATION RECOVERY (1948)
 HV4942
 HV4942'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948
 HV4942'STATION WAS NOT RECOVERED.  THE REMAINS OF CONCRETE REFERENCE
 HV4942'MONUMENTS, MENTIONED IN 1938 RECOVERY NOTE OF T.M.P., JR., WERE
 HV4942'FOUND ON THE SHORE AND THE LARGE LOCUST STUMP MENTIONED IN 1929
 HV4942'RECOVERY NOTE OF E.B.L. WAS ALSO FOUND.
 HV4942'
 HV4942'AFTER COMBING THE AREA WITH A MINE DETECTOR FOR OVER ONE HOUR
 HV4942'THE SEARCH WAS ABANDONED.
 HV4942'
 HV4942'THE MARK IS THOUGHT TO BE IN EXISTANCE BUT RECOVERY IS NOT
 HV4942'PRACTICABLE WITHOUT USING A THEODOLITE OR PLANETABLE.
 HV4942
 HV4942                          STATION RECOVERY (1959)
 HV4942
 HV4942'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV4942'STATION WAS NOT RECOVERED.  THERE WAS TOO MUCH DEBRIS WASHED UP ON
 HV4942'THE BEACH TO DEFINITELY IDENTIFY THE REMAINS OF THE CONCRETE
 HV4942'REFERENCE MONUMENTS MENTIONED IN THE 1938 RECOVERY NOTE BY
 HV4942'T.M.P., JR. AND THE 1948 RECOVERY NOTE BY THE DIVISION OF
 HV4942'PHOTOGRAMMETRY.  THREE LARGE LOCUST STUMPS WERE FOUND IN THIS
 HV4942'AREA AND IT WAS IMPOSSIBLE TO IDENTIFY THE ONE MENTIONED IN THE
 HV4942'1938 AND 1948 RECOVERY NOTES.
 HV4942'
 HV4942'THERE WAS NO LARGE, MONUMENT TYPE, CONCRETE BLOCK FOUND ON THE
 HV4942'BEACH AND IT IS THOUGHT THAT THE STATION STILL EXISTS AND WILL
 HV4942'PROBABLY BE EXPOSED BY THE ERODING BLUFF IN THE NEXT FEW YEARS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6206 ***********************************************************************
 DN6206  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6206  DESIGNATION -  BRISSON
 DN6206  PID         -  DN6206
 DN6206  STATE/COUNTY-  MD/CECIL
 DN6206  COUNTRY     -  US
 DN6206  USGS QUAD   -  EARLEVILLE (2016)
 DN6206
 DN6206                         *CURRENT SURVEY CONTROL
 DN6206  ______________________________________________________________________
 DN6206* NAD 83(2011) POSITION- 39 28 53.97843(N) 075 57 52.36763(W)   ADJUSTED
 DN6206* NAD 83(2011) ELLIP HT-   -23.825 (meters)        (06/27/12)   ADJUSTED
 DN6206* NAD 83(2011) EPOCH   -  2010.00
 DN6206* NAVD 88 ORTHO HEIGHT -     9.48  (meters)       31.1   (feet) GPS OBS
 DN6206  ______________________________________________________________________
 DN6206  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6206  GEOID HEIGHT    -        -33.296 (meters)                     GEOID03
 DN6206  GEOID HEIGHT    -        -33.333 (meters)                     GEOID18
 DN6206  NAD 83(2011) X  -  1,195,509.150 (meters)                     COMP
 DN6206  NAD 83(2011) Y  - -4,782,316.850 (meters)                     COMP
 DN6206  NAD 83(2011) Z  -  4,033,717.042 (meters)                     COMP
 DN6206  LAPLACE CORR    -         -0.98  (seconds)                    DEFLEC18
 DN6206
 DN6206  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6206  Standards:
 DN6206         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6206            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6206  -------------------------------------------------------------------
 DN6206  NETWORK    0.57   1.20           0.26   0.20   0.61     -0.00182766
 DN6206  -------------------------------------------------------------------
 DN6206  Click here for local accuracies and other accuracy information.
 DN6206
 DN6206.The horizontal coordinates were established by GPS observations
 DN6206.and adjusted by the National Geodetic Survey in June 2012.
 DN6206
 DN6206.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6206.been affixed to the stable North American tectonic plate. See 
 DN6206.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6206
 DN6206.The horizontal coordinates are valid at the epoch date displayed above
 DN6206.which is a decimal equivalence of Year/Month/Day.
 DN6206
 DN6206.The orthometric height was determined by GPS observations and a
 DN6206.high-resolution geoid model using precise GPS observation and
 DN6206.processing techniques.
 DN6206
 DN6206.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6206.GEOID18 height accuracy estimate available here.
 DN6206
 DN6206.Click photographs - Photos may exist for this station.
 DN6206
 DN6206.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6206
 DN6206.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6206
 DN6206.The ellipsoidal height was determined by GPS observations
 DN6206.and is referenced to NAD 83.
 DN6206
 DN6206. The following values were computed from the NAD 83(2011) position.
 DN6206
 DN6206;                    North         East     Units Scale Factor Converg.
 DN6206;SPC MD       -   201,984.009   489,084.888   MT  1.00000569   +0 38 59.6
 DN6206;SPC MD       -   662,675.87  1,604,606.00   sFT  1.00000569   +0 38 59.6
 DN6206;UTM  18      - 4,370,673.187   417,046.689   MT  0.99968472   -0 36 48.0
 DN6206
 DN6206!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6206!SPC MD       -   1.00000374  x   1.00000569  =   1.00000943
 DN6206!UTM  18      -   1.00000374  x   0.99968472  =   0.99968846
 DN6206
 DN6206_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1704670673(NAD 83)
 DN6206
 DN6206                          SUPERSEDED SURVEY CONTROL
 DN6206
 DN6206  NAD 83(2007)-  39 28 53.97858(N)    075 57 52.36835(W) AD(2002.00) 1
 DN6206  ELLIP H (02/23/12)  -23.789  (m)                       GP(2002.00) 4 1
 DN6206
 DN6206.Superseded values are not recommended for survey control.
 DN6206
 DN6206.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6206.See file dsdata.pdf to determine how the superseded data were derived.
 DN6206
 DN6206_MARKER: DD = SURVEY DISK
 DN6206_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6206_STAMPING: BRISSON 2008
 DN6206_MARK LOGO: MD-015
 DN6206_PROJECTION: FLUSH
 DN6206_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6206_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6206+STABILITY: SURFACE MOTION
 DN6206_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6206+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6206
 DN6206  HISTORY     - Date     Condition        Report By
 DN6206  HISTORY     - 20081204 MONUMENTED       GWS
 DN6206
 DN6206                          STATION DESCRIPTION
 DN6206
 DN6206'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6206'THE STATION IS LOCATED ABOUT 2.30 MI (3.7 KM) SOUTHWEST OF ELK NECK.
 DN6206'
 DN6206'TO REACH THE STATION FROM THE JUNCTION OF TURKEY POINT ROAD (ROUTE
 DN6206'272) AND OLD ELK NECK ROAD, PROCEED SOUTH ON TURKEY POINT ROAD FOR
 DN6206'1.80 MI (2.9 KM) TO A SIDE ROAD ON THE LEFT.  TURN LEFT AND GO
 DN6206'SOUTHEAST ON OSPREY COVE LANE FOR 0.99 MI (1.6 KM) TO THE STATION ON
 DN6206'THE RIGHT.
 DN6206'
 DN6206'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6206'CONCRETE MONUMENT WEST OF OSPREY COVE LANE, 211.8 FT (64.6 M) EAST OF
 DN6206'A HEADWALL WITH A NAIL SET IN THE CENTER, 345.7 FT (105.4 M) NORTHWEST
 DN6206'OF A GAZEBO AND 183.3 FT (55.9 M) NORTHEAST OF A 10 FT (3.0 M)
 DN6206'DIAMETER TREE WITH A RAILROAD SPIKE IN IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4958 ***********************************************************************
 HV4958  DESIGNATION -  BROAD
 HV4958  PID         -  HV4958
 HV4958  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4958  COUNTRY     -  US
 HV4958  USGS QUAD   -  MOUNT VERNON (2019)
 HV4958
 HV4958                         *CURRENT SURVEY CONTROL
 HV4958  ______________________________________________________________________
 HV4958* NAD 83(1993) POSITION- 38 44 18.05340(N) 077 01 45.01681(W)   ADJUSTED
 HV4958* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 HV4958  ______________________________________________________________________
 HV4958  GEOID HEIGHT    -        -32.386 (meters)                     GEOID18
 HV4958  LAPLACE CORR    -         -2.62  (seconds)                    DEFLEC18
 HV4958  HORZ ORDER      -  THIRD
 HV4958
 HV4958.The horizontal coordinates were established by classical geodetic methods
 HV4958.and adjusted by the National Geodetic Survey in November 1994.
 HV4958
 HV4958.The orthometric height was scaled from a topographic map.
 HV4958
 HV4958.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4958.GEOID18 height accuracy estimate available here.
 HV4958
 HV4958.Click photographs - Photos may exist for this station.
 HV4958
 HV4958.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4958
 HV4958. The following values were computed from the NAD 83(1993) position.
 HV4958
 HV4958;                    North         East     Units Scale Factor Converg.
 HV4958;SPC MD       -   118,961.293   397,463.831   MT  0.99995271   -0 01 05.9
 HV4958;SPC MD       -   390,292.18  1,304,012.59   sFT  0.99995271   -0 01 05.9
 HV4958;SPC VA N     - 2,119,980.021 3,627,868.740   MT  0.99995060   +0 55 04.7
 HV4958;SPC VA N     - 6,955,301.12 11,902,432.69   sFT  0.99995060   +0 55 04.7
 HV4958;UTM  18      - 4,289,696.176   323,637.112   MT  0.99998303   -1 16 12.4
 HV4958
 HV4958!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4958!SPC MD       -   1.00000324  x   0.99995271  =   0.99995595
 HV4958!SPC VA N     -   1.00000324  x   0.99995060  =   0.99995384
 HV4958!UTM  18      -   1.00000324  x   0.99998303  =   0.99998627
 HV4958
 HV4958_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2363789696(NAD 83)
 HV4958
 HV4958|---------------------------------------------------------------------|
 HV4958| PID    Reference Object                     Distance      Geod. Az  |
 HV4958|                                                           dddmmss.s |
 HV4958| DC6732 BROAD RM                              9.550 METERS 10237     |
 HV4958|---------------------------------------------------------------------|
 HV4958
 HV4958                          SUPERSEDED SURVEY CONTROL
 HV4958
 HV4958  NAD 83(1991)-  38 44 18.05147(N)    077 01 45.01859(W) AD(       ) 3
 HV4958  NAD 83(1986)-  38 44 18.05271(N)    077 01 45.03150(W) AD(       ) 3
 HV4958  NAD 27      -  38 44 17.63000(N)    077 01 46.12200(W) AD(       ) 3
 HV4958
 HV4958.Superseded values are not recommended for survey control.
 HV4958
 HV4958.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4958.See file dsdata.pdf to determine how the superseded data were derived.
 HV4958
 HV4958_MARKER: DS = TRIANGULATION STATION DISK
 HV4958_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4958_STAMPING: BROAD 1928
 HV4958_MARK LOGO: CGS
 HV4958_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4958+STABILITY: SURFACE MOTION
 HV4958
 HV4958  HISTORY     - Date     Condition        Report By
 HV4958  HISTORY     - 1928     MONUMENTED       CGS
 HV4958  HISTORY     - 1959     SEE DESCRIPTION  USACE
 HV4958
 HV4958                          STATION DESCRIPTION
 HV4958
 HV4958'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4958'ON THE E SHORE OF POTOMAC RIVER ON THE ROUNDED GRAVEL POINT AT
 HV4958'THE S ENTRANCE TO BROAD CREEK, JUST BACK OF THE HIGH-WATER
 HV4958'LINE.  POINT IS HEAVILY WOODED WITH A GRADUAL SLOPE BACK OF
 HV4958'STATION.  AN OLD CIRCULAR TREAD WHEEL LIES 3 METERS E OF
 HV4958'STATION, AND IS ABOUT 6 FEET HIGH AND OUT OF USE.  MARK IS
 HV4958'SEVERAL INCHES ABOVE SURFACE AND STAMPED BROAD 1928.
 HV4958'
 HV4958'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV4958'CONCRETE.
 HV4958'
 HV4958'REFERENCE MARK IS NE OF STATION ON THE SLOPE BACK OF THE
 HV4958'GRAVEL BEACH, AND PROJECTS SEVERAL INCHES ABOVE SURFACE AND
 HV4958'STAMPED BROAD 1928.
 HV4958'
 HV4958'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV4958
 HV4958                          STATION RECOVERY (1959)
 HV4958
 HV4958'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1959
 HV4958'STATION DESTROYED.  TABLET FOUND IN TRASH ALONG HIGH WATER
 HV4958'SHORELINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW1323 ***********************************************************************
 FW1323  DESIGNATION -  BROAD
 FW1323  PID         -  FW1323
 FW1323  STATE/COUNTY-  MD/SOMERSET
 FW1323  COUNTRY     -  US
 FW1323  USGS QUAD   -  CRISFIELD (2016)
 FW1323
 FW1323                         *CURRENT SURVEY CONTROL
 FW1323  ______________________________________________________________________
 FW1323* NAD 83(1993) POSITION- 37 55 40.67393(N) 075 50 57.57956(W)   ADJUSTED
 FW1323* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 FW1323  ______________________________________________________________________
 FW1323  GEOID HEIGHT    -        -36.162 (meters)                     GEOID18
 FW1323  LAPLACE CORR    -         -1.61  (seconds)                    DEFLEC18
 FW1323  HORZ ORDER      -  THIRD
 FW1323
 FW1323.The horizontal coordinates were established by classical geodetic methods
 FW1323.and adjusted by the National Geodetic Survey in November 1994.
 FW1323
 FW1323.The orthometric height was scaled from a topographic map.
 FW1323
 FW1323.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW1323.GEOID18 height accuracy estimate available here.
 FW1323
 FW1323.Click photographs - Photos may exist for this station.
 FW1323
 FW1323.The Laplace correction was computed from DEFLEC18 derived deflections.
 FW1323
 FW1323. The following values were computed from the NAD 83(1993) position.
 FW1323
 FW1323;                    North         East     Units Scale Factor Converg.
 FW1323;SPC MD       -    29,643.481   501,171.137   MT  1.00008552   +0 43 19.9
 FW1323;SPC MD       -    97,255.32  1,644,258.97   sFT  1.00008552   +0 43 19.9
 FW1323;SPC VA S     - 1,180,241.375 3,733,010.413   MT  0.99999317   +1 36 31.5
 FW1323;SPC VA S     - 3,872,175.24 12,247,385.00   sFT  0.99999317   +1 36 31.5
 FW1323;UTM  18      - 4,198,162.703   425,357.744   MT  0.99966862   -0 31 19.5
 FW1323
 FW1323!             -  Elev Factor  x  Scale Factor =   Combined Factor
 FW1323!SPC MD       -   1.00000572  x   1.00008552  =   1.00009124
 FW1323!SPC VA S     -   1.00000572  x   0.99999317  =   0.99999889
 FW1323!UTM  18      -   1.00000572  x   0.99966862  =   0.99967434
 FW1323
 FW1323:                Primary Azimuth Mark                     Grid Az
 FW1323:SPC MD       -  WATERMELON HUMMOCK                       023 03 36.9
 FW1323:SPC VA S     -  WATERMELON HUMMOCK                       022 10 25.3
 FW1323:UTM  18      -  WATERMELON HUMMOCK                       024 18 16.3
 FW1323
 FW1323_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVG2535798162(NAD 83)
 FW1323
 FW1323|---------------------------------------------------------------------|
 FW1323| PID    Reference Object                     Distance      Geod. Az  |
 FW1323|                                                           dddmmss.s |
 FW1323| FW1326 WATERMELON HUMMOCK                  APPROX. 1.9 KM 0234656.8 |
 FW1323|---------------------------------------------------------------------|
 FW1323
 FW1323                          SUPERSEDED SURVEY CONTROL
 FW1323
 FW1323  NAD 83(1991)-  37 55 40.67423(N)    075 50 57.58688(W) AD(       ) 3
 FW1323  NAD 83(1986)-  37 55 40.67371(N)    075 50 57.60558(W) AD(       ) 3
 FW1323  NAD 27      -  37 55 40.22500(N)    075 50 58.83300(W) AD(       ) 3
 FW1323  USSD        -  37 55 40.58700(N)    075 50 58.60700(W) AD(       ) 3
 FW1323
 FW1323.Superseded values are not recommended for survey control.
 FW1323
 FW1323.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW1323.See file dsdata.pdf to determine how the superseded data were derived.
 FW1323
 FW1323_MARK LOGO: CGS
 FW1323
 FW1323  HISTORY     - Date     Condition        Report By
 FW1323  HISTORY     - 1923     MONUMENTED       CGS
 FW1323  HISTORY     - 1961     MARK NOT FOUND   CGS
 FW1323
 FW1323                          STATION DESCRIPTION
 FW1323
 FW1323'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (LFB)
 FW1323'A SEARCH OF THE AREA FAILED TO REVEAL ANY MARKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6195 ***********************************************************************
 HV6195  DESIGNATION -  BROAD
 HV6195  PID         -  HV6195
 HV6195  STATE/COUNTY-  MD/QUEEN ANNES
 HV6195  COUNTRY     -  US
 HV6195  USGS QUAD   -  KENT ISLAND (2016)
 HV6195
 HV6195                         *CURRENT SURVEY CONTROL
 HV6195  ______________________________________________________________________
 HV6195* NAD 83(1991) POSITION- 38 58 18.29078(N) 076 20 42.53694(W)   ADJUSTED
 HV6195* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6195  ______________________________________________________________________
 HV6195  GEOID HEIGHT    -        -33.566 (meters)                     GEOID18
 HV6195  LAPLACE CORR    -         -2.60  (seconds)                    DEFLEC18
 HV6195  HORZ ORDER      -  THIRD
 HV6195
 HV6195.The horizontal coordinates were established by classical geodetic methods
 HV6195.and adjusted by the National Geodetic Survey in January 1992.
 HV6195
 HV6195.The orthometric height was scaled from a topographic map.
 HV6195
 HV6195.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6195.GEOID18 height accuracy estimate available here.
 HV6195
 HV6195.Click photographs - Photos may exist for this station.
 HV6195
 HV6195.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6195
 HV6195. The following values were computed from the NAD 83(1991) position.
 HV6195
 HV6195;                    North         East     Units Scale Factor Converg.
 HV6195;SPC MD       -   145,073.430   456,746.673   MT  0.99995125   +0 24 39.6
 HV6195;SPC MD       -   475,961.74  1,498,509.71   sFT  0.99995125   +0 24 39.6
 HV6195;UTM  18      - 4,314,501.768   383,472.607   MT  0.99976720   -0 50 46.0
 HV6195
 HV6195!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6195!SPC MD       -   1.00000530  x   0.99995125  =   0.99995655
 HV6195!UTM  18      -   1.00000530  x   0.99976720  =   0.99977250
 HV6195
 HV6195:                Primary Azimuth Mark                     Grid Az
 HV6195:SPC MD       -  THOMAS 2                                 232 28 43.8
 HV6195:UTM  18      -  THOMAS 2                                 233 44 09.4
 HV6195
 HV6195_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8347214501(NAD 83)
 HV6195
 HV6195|---------------------------------------------------------------------|
 HV6195| PID    Reference Object                     Distance      Geod. Az  |
 HV6195|                                                           dddmmss.s |
 HV6195| HV6316 THOMAS 2                            APPROX.11.7 KM 2325323.4 |
 HV6195| HV6392 ANNAPOLIS ST ANNS EPIS SPIRE        APPROX.12.8 KM 2732203.9 |
 HV6195| HV6393 ANNAPOLIS ST CAPITOL BLDG DOME      APPROX.12.7 KM 2733425.7 |
 HV6195| HV6328 ST JOHNS COLLEGE                    APPROX.12.7 KM 2745734.1 |
 HV6195|---------------------------------------------------------------------|
 HV6195
 HV6195                          SUPERSEDED SURVEY CONTROL
 HV6195
 HV6195  NAD 83(1986)-  38 58 18.28634(N)    076 20 42.54886(W) AD(       ) 3
 HV6195  NAD 27      -  38 58 17.88100(N)    076 20 43.69200(W) AD(       ) 3
 HV6195  USSD        -  38 58 18.24400(N)    076 20 43.54500(W) AD(       ) 3
 HV6195
 HV6195.Superseded values are not recommended for survey control.
 HV6195
 HV6195.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6195.See file dsdata.pdf to determine how the superseded data were derived.
 HV6195
 HV6195_MARKER: N = NAIL
 HV6195_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6195
 HV6195  HISTORY     - Date     Condition        Report By
 HV6195  HISTORY     - 1898     MONUMENTED       CGS
 HV6195  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6195
 HV6195                          STATION DESCRIPTION
 HV6195
 HV6195'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 HV6195'ON THE E SHORE OF CHESAPEAKE BAY, ON THE W SHORE OF KENT ISLAND,
 HV6195'ABOUT 5-1/2 MILES SOUTHERLY FROM THE NORTHERLY END OF THE ISLAND,
 HV6195'S OF BROAD CREEK, 11 FEET FROM EDGE OF BLUFF AND 11 FEET N OF A
 HV6195'SMALL GULLY.  MARKED BY TWO 6-INCH DRAIN TILES PLACED ONE ABOVE
 HV6195'THE OTHER, THE TOP OF THE UPPER TILE BEING 6 INCHES BELOW THE
 HV6195'SURFACE OF THE GROUND, AND A STUB WITH A NAIL IN IT EXTENDING
 HV6195'TO THE SURFACE.
 HV6195
 HV6195                          STATION RECOVERY (1932)
 HV6195
 HV6195'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6195'STATION IS LOST.  THE BLUFF ALONG THIS SHORE HAS ERODED WELL
 HV6195'BACK FROM WHERE THE STATION WAS LOCATED.  THE AVERAGE ANNUAL
 HV6195'EROSION IS SAID TO BE AT LEAST 5 FEET AND THIS STATION WAS ONLY
 HV6195'11 FEET FROM THE EDGE 34 YEARS AGO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7140 ***********************************************************************
 HV7140  DESIGNATION -  BROAD
 HV7140  PID         -  HV7140
 HV7140  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7140  COUNTRY     -  US
 HV7140  USGS QUAD   -  SOUTH RIVER (2016)
 HV7140
 HV7140                         *CURRENT SURVEY CONTROL
 HV7140  ______________________________________________________________________
 HV7140* NAD 83(1991) POSITION- 38 57 33.81833(N) 076 34 38.73749(W)   ADJUSTED
 HV7140* NAVD 88 ORTHO HEIGHT -     7.    (meters)       23.    (feet) SCALED
 HV7140  ______________________________________________________________________
 HV7140  GEOID HEIGHT    -        -33.175 (meters)                     GEOID18
 HV7140  LAPLACE CORR    -         -4.99  (seconds)                    DEFLEC18
 HV7140  HORZ ORDER      -  THIRD
 HV7140
 HV7140.The horizontal coordinates were established by classical geodetic methods
 HV7140.and adjusted by the National Geodetic Survey in January 1992.
 HV7140
 HV7140.The orthometric height was scaled from a topographic map.
 HV7140
 HV7140.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7140.GEOID18 height accuracy estimate available here.
 HV7140
 HV7140.Click photographs - Photos may exist for this station.
 HV7140
 HV7140.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7140
 HV7140. The following values were computed from the NAD 83(1991) position.
 HV7140
 HV7140;                    North         East     Units Scale Factor Converg.
 HV7140;SPC MD       -   143,583.314   436,624.957   MT  0.99995091   +0 15 54.8
 HV7140;SPC MD       -   471,072.92  1,432,493.71   sFT  0.99995091   +0 15 54.8
 HV7140;UTM  18      - 4,313,453.641   363,326.131   MT  0.99983002   -0 59 31.2
 HV7140
 HV7140!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7140!SPC MD       -   1.00000415  x   0.99995091  =   0.99995506
 HV7140!UTM  18      -   1.00000415  x   0.99983002  =   0.99983416
 HV7140
 HV7140:                Primary Azimuth Mark                     Grid Az
 HV7140:SPC MD       -  JENKS                                    254 30 04.1
 HV7140:UTM  18      -  JENKS                                    255 45 30.1
 HV7140
 HV7140_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6332613453(NAD 83)
 HV7140
 HV7140|---------------------------------------------------------------------|
 HV7140| PID    Reference Object                     Distance      Geod. Az  |
 HV7140|                                                           dddmmss.s |
 HV7140| HV7111 ADDISON                             347.132 METERS 11520     |
 HV7140| HV7175 JENKS                               466.317 METERS 2544558.9 |
 HV7140| CX2132 BROAD RM                             12.153 METERS 29701     |
 HV7140|---------------------------------------------------------------------|
 HV7140
 HV7140                          SUPERSEDED SURVEY CONTROL
 HV7140
 HV7140  NAD 83(1986)-  38 57 33.81503(N)    076 34 38.74853(W) AD(       ) 3
 HV7140  NAD 27      -  38 57 33.41500(N)    076 34 39.88200(W) AD(       ) 3
 HV7140
 HV7140.Superseded values are not recommended for survey control.
 HV7140
 HV7140.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7140.See file dsdata.pdf to determine how the superseded data were derived.
 HV7140
 HV7140_MARKER: DS = TRIANGULATION STATION DISK
 HV7140_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7140
 HV7140  HISTORY     - Date     Condition        Report By
 HV7140  HISTORY     - 1933     MONUMENTED       CGS
 HV7140  HISTORY     - 1960     GOOD             CGS
 HV7140
 HV7140                          STATION DESCRIPTION
 HV7140
 HV7140'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7140'STATION IS ON THE NE SIDE OF SOUTH RIVER ABOUT 1/4 MILE W OF THE
 HV7140'FERRY ROAD HIGHWAY BRIDGE AND ON THE WESTERN POINT FORMED BY THE
 HV7140'JUNCTION OF SOUTH RIVER AND BROAD CREEK.  ON WOODED POINT
 HV7140'BELONGING TO MR. ANDREW D. PORTER AND ON THE DEVELOPMENT KNOWN AS
 HV7140'SOUTH HAVEN.  ON TOP OF BLUFF, ABOUT 40 FEET BACK FROM THE POINT,
 HV7140'15 FEET FROM THE EDGE ON THE BROAD CREEK SIDE AND 30 FEET FROM THE
 HV7140'EDGE ON THE SOUTH RIVER SIDE.  THE STATION IS ABOUT 30 FEET ABOVE
 HV7140'HIGH WATER.
 HV7140'
 HV7140'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7140'CONCRETE AS DESCRIBED.
 HV7140
 HV7140                          STATION RECOVERY (1960)
 HV7140
 HV7140'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7140'STATION AND R.M. RECOVERED AS DESCRIBED IN GOOD CONDITION.
 HV7140'
 HV7140'STATION AND R.M. BOTH STAMPED BROAD 1933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7212 ***********************************************************************
 HV7212  DESIGNATION -  BROAD
 HV7212  PID         -  HV7212
 HV7212  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7212  COUNTRY     -  US
 HV7212  USGS QUAD   -  DEALE (2016)
 HV7212
 HV7212                         *CURRENT SURVEY CONTROL
 HV7212  ______________________________________________________________________
 HV7212* NAD 83(1991) POSITION- 38 47 21.39680(N) 076 31 25.31180(W)   ADJUSTED
 HV7212* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7212  ______________________________________________________________________
 HV7212  GEOID HEIGHT    -        -33.558 (meters)                     GEOID18
 HV7212  LAPLACE CORR    -         -3.77  (seconds)                    DEFLEC18
 HV7212  HORZ ORDER      -  THIRD
 HV7212
 HV7212.The horizontal coordinates were established by classical geodetic methods
 HV7212.and adjusted by the National Geodetic Survey in January 1992.
 HV7212
 HV7212.The orthometric height was scaled from a topographic map.
 HV7212
 HV7212.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7212.GEOID18 height accuracy estimate available here.
 HV7212
 HV7212.Click photographs - Photos may exist for this station.
 HV7212
 HV7212.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7212
 HV7212. The following values were computed from the NAD 83(1991) position.
 HV7212
 HV7212;                    North         East     Units Scale Factor Converg.
 HV7212;SPC MD       -   124,722.215   441,380.242   MT  0.99995098   +0 17 56.2
 HV7212;SPC MD       -   409,192.80  1,448,095.01   sFT  0.99995098   +0 17 56.2
 HV7212;UTM  18      - 4,294,495.302   367,666.493   MT  0.99981565   -0 57 16.8
 HV7212
 HV7212!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7212!SPC MD       -   1.00000530  x   0.99995098  =   0.99995628
 HV7212!UTM  18      -   1.00000530  x   0.99981565  =   0.99982095
 HV7212
 HV7212:                Primary Azimuth Mark                     Grid Az
 HV7212:SPC MD       -  PARKER                                   216 48 52.9
 HV7212:UTM  18      -  PARKER                                   218 04 05.9
 HV7212
 HV7212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6766694495(NAD 83)
 HV7212
 HV7212|---------------------------------------------------------------------|
 HV7212| PID    Reference Object                     Distance      Geod. Az  |
 HV7212|                                                           dddmmss.s |
 HV7212| HV7190 PARKER                              APPROX. 2.3 KM 2170649.1 |
 HV7212| CX2133 BROAD RM                             13.290 METERS 30756     |
 HV7212|---------------------------------------------------------------------|
 HV7212
 HV7212                          SUPERSEDED SURVEY CONTROL
 HV7212
 HV7212  NAD 83(1986)-  38 47 21.39421(N)    076 31 25.32426(W) AD(       ) 3
 HV7212  NAD 27      -  38 47 20.96600(N)    076 31 26.48900(W) AD(       ) 3
 HV7212  USSD        -  38 47 21.33900(N)    076 31 26.30000(W) AD(       ) 3
 HV7212
 HV7212.Superseded values are not recommended for survey control.
 HV7212
 HV7212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7212.See file dsdata.pdf to determine how the superseded data were derived.
 HV7212
 HV7212_MARKER: N = NAIL
 HV7212_SETTING: 0 = UNSPECIFIED SETTING
 HV7212
 HV7212  HISTORY     - Date     Condition        Report By
 HV7212  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7212  HISTORY     - 1957     MARK NOT FOUND   USGS
 HV7212  HISTORY     - 20031001 MARK NOT FOUND   USPSQD
 HV7212
 HV7212                          STATION DESCRIPTION
 HV7212
 HV7212'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7212'STATION IS ON THE WESTERN SHORE OF CHESAPEAKE BAY, ON THE S SIDE
 HV7212'OF ENTRANCE TO BROADWATER CREEK, ON THE EXTREME N END OF A NARROW
 HV7212'NECK OF LAND BETWEEN THE CREEK AND THE BAY.  ABOUT 25 FEET BACK
 HV7212'FROM EDGE OF A BANK 4 FEET HIGH.  A NUMBER OF CEDAR TREES STAND 20
 HV7212'YARDS NW OF THE STATION.
 HV7212'
 HV7212'CENTER MARKED BY A NAIL IN A PINE STUB FLUSH WITH THE GROUND.
 HV7212'
 HV7212'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7212'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7212'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7212'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7212'IS 13.29 METERS (43.6 FEET) FROM THE STATION IN BEARING N 52 DEG 4
 HV7212'MIN W. OTHER DISTANCES AND BEARINGS ARE AS FOLLOWS--N CHIMNEY OF
 HV7212'HOUSE ACROSS BROADWATER CREEK, 1/2 MILE, S 64 DEG 35 MIN W.
 HV7212'CHIMNEY ON HOUSE (OPPOSITE SHORE), 300 YARDS, N 56 DEG 22 MIN W.
 HV7212'NAIL IN BLAZE ON CEDAR TREE, 21.10 METERS (69.2 FEET). NAIL IN
 HV7212'BLAZE ON 12-INCH CEDAR TREE ON EDGE OF BANK, 30.25 METERS (99.2
 HV7212'FEET), N 27 DEG 39 MIN W.  E CHIMNEY OF BROWN HOUSE (OPPOSITE
 HV7212'SHORE), 1/2 MILE, N 21 DEG 27 MIN W.
 HV7212
 HV7212                          STATION RECOVERY (1957)
 HV7212
 HV7212'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV7212'STATION AND M.S.F.C. REFERENCE MARK WERE NOT FOUND.  ASSUMED TO
 HV7212'HAVE BEEN LOST DUE TO BANK EROSION.
 HV7212
 HV7212                          STATION RECOVERY (2003)
 HV7212
 HV7212'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7212'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4994 ***********************************************************************
 JV4994  DESIGNATION -  BROAD
 JV4994  PID         -  JV4994
 JV4994  STATE/COUNTY-  MD/KENT
 JV4994  COUNTRY     -  US
 JV4994  USGS QUAD   -  CHESTERTOWN (2017)
 JV4994
 JV4994                         *CURRENT SURVEY CONTROL
 JV4994  ______________________________________________________________________
 JV4994* NAD 83(1991) POSITION- 39 09 26.96935(N) 076 04 16.58216(W)   ADJUSTED
 JV4994* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4994  ______________________________________________________________________
 JV4994  GEOID HEIGHT    -        -33.513 (meters)                     GEOID18
 JV4994  LAPLACE CORR    -         -2.44  (seconds)                    DEFLEC18
 JV4994  HORZ ORDER      -  THIRD
 JV4994
 JV4994.The horizontal coordinates were established by classical geodetic methods
 JV4994.and adjusted by the National Geodetic Survey in January 1992.
 JV4994
 JV4994.The orthometric height was scaled from a topographic map.
 JV4994
 JV4994.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4994.GEOID18 height accuracy estimate available here.
 JV4994
 JV4994.Click photographs - Photos may exist for this station.
 JV4994
 JV4994.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4994
 JV4994. The following values were computed from the NAD 83(1991) position.
 JV4994
 JV4994;                    North         East     Units Scale Factor Converg.
 JV4994;SPC MD       -   165,897.990   480,269.196   MT  0.99996190   +0 34 58.4
 JV4994;SPC MD       -   544,283.66  1,575,683.19   sFT  0.99996190   +0 34 58.4
 JV4994;UTM  18      - 4,334,800.248   407,441.498   MT  0.99970549   -0 40 35.4
 JV4994
 JV4994!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4994!SPC MD       -   1.00000530  x   0.99996190  =   0.99996720
 JV4994!UTM  18      -   1.00000530  x   0.99970549  =   0.99971078
 JV4994
 JV4994:                Primary Azimuth Mark                     Grid Az
 JV4994:SPC MD       -  NILS                                     079 48 36.3
 JV4994:UTM  18      -  NILS                                     081 04 10.1
 JV4994
 JV4994_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0744134800(NAD 83)
 JV4994
 JV4994|---------------------------------------------------------------------|
 JV4994| PID    Reference Object                     Distance      Geod. Az  |
 JV4994|                                                           dddmmss.s |
 JV4994| JV4975 NILS                                APPROX. 0.9 KM 0802334.7 |
 JV4994|---------------------------------------------------------------------|
 JV4994
 JV4994                          SUPERSEDED SURVEY CONTROL
 JV4994
 JV4994  NAD 83(1986)-  39 09 26.96255(N)    076 04 16.59456(W) AD(       ) 3
 JV4994  NAD 27      -  39 09 26.57300(N)    076 04 17.78700(W) AD(       ) 3
 JV4994  USSD        -  39 09 26.99700(N)    076 04 17.56200(W) AD(       ) 3
 JV4994
 JV4994.Superseded values are not recommended for survey control.
 JV4994
 JV4994.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4994.See file dsdata.pdf to determine how the superseded data were derived.
 JV4994
 JV4994_MARKER: H = DRILL HOLE
 JV4994_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4994_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4994+STABILITY: SURFACE MOTION
 JV4994
 JV4994  HISTORY     - Date     Condition        Report By
 JV4994  HISTORY     - 1909     MONUMENTED       MDSFC
 JV4994  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV4994
 JV4994                          STATION DESCRIPTION
 JV4994
 JV4994'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV4994'STATION IS ON THE NORTHWESTERN SIDE OF UPPER CHESTER RIVER, ABOUT 1
 JV4994'MILE NE OF ENTRANCE TO BROWNS CREEK, ON WESTERN END OF A MARSH
 JV4994'ISLAND AT ENTRANCE TO BROAD CREEK, ABOUT 9 YARDS N OF SHORE, 43
 JV4994'YARDS S OF SHORE, AND 52 YARDS ESE OF SHORE.
 JV4994'
 JV4994'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV4994'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV4994'2 FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES.  THE LETTERS
 JV4994'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV4994'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV4994'INCHES BELOW THE BASE OF THE MONUMENT.
 JV4994'
 JV4994'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV4994'FOLLOWS--PEAK OF MIDDLE DORMER WINDOW OF LARGE HOUSE, 1-1/2 MILES,
 JV4994'S 32 DEG 31 MIN W. E PEAK OF LARGE BARN TO LEFT OF LARGE TREE, 1 MILE,
 JV4994'N 89 DEG 03 MIN NEAR PEAK OF CANNERY, 1-1/8 MILES, N 87 DEG 40 MIN E.
 JV4994'CHIMNEY ON ELL OF HOUSE ON RIDGE, 2-1/4 MILES, S 48 DEG 28 MIN E.
 JV4994'RIGHT PEAK OF BARN, 1 MILE, S 01 DEG 11 MIN E.
 JV4994
 JV4994                          STATION RECOVERY (1941)
 JV4994
 JV4994'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV4994'STATION FOUND WASHED OUT.  ATTEMPTED TO LOCATE SUBSURFACE MARK TO
 JV4994'NO AVAIL.  RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6721 ***********************************************************************
 JV6721  DESIGNATION -  BROAD
 JV6721  PID         -  JV6721
 JV6721  STATE/COUNTY-  MD/HARFORD
 JV6721  COUNTRY     -  US
 JV6721  USGS QUAD   -  DELTA (2019)
 JV6721
 JV6721                         *CURRENT SURVEY CONTROL
 JV6721  ______________________________________________________________________
 JV6721* NAD 83(2011) POSITION- 39 42 18.31010(N) 076 15 18.33654(W)   ADJUSTED
 JV6721* NAD 83(2011) ELLIP HT-    92.759 (meters)        (06/27/12)   ADJUSTED
 JV6721* NAD 83(2011) EPOCH   -  2010.00
 JV6721* NAVD 88 ORTHO HEIGHT -   125.7   (meters)      412.    (feet) VERTCON3
 JV6721  ______________________________________________________________________
 JV6721  GEOID HEIGHT    -        -32.877 (meters)                     GEOID18
 JV6721  NAD 83(2011) X  -  1,167,507.662 (meters)                     COMP
 JV6721  NAD 83(2011) Y  - -4,773,047.829 (meters)                     COMP
 JV6721  NAD 83(2011) Z  -  4,052,906.787 (meters)                     COMP
 JV6721  LAPLACE CORR    -         -2.26  (seconds)                    DEFLEC18
 JV6721
 JV6721  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6721  Standards:
 JV6721         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6721            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6721  -------------------------------------------------------------------
 JV6721  NETWORK    2.33   4.53           1.05   0.68   2.31      0.65230318
 JV6721  -------------------------------------------------------------------
 JV6721  Click here for local accuracies and other accuracy information.
 JV6721
 JV6721.The horizontal coordinates were established by GPS observations
 JV6721.and adjusted by the National Geodetic Survey in June 2012.
 JV6721
 JV6721.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6721.been affixed to the stable North American tectonic plate. See 
 JV6721.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6721
 JV6721.The horizontal coordinates are valid at the epoch date displayed above
 JV6721.which is a decimal equivalence of Year/Month/Day.
 JV6721
 JV6721.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6721.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6721
 JV6721.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6721.GEOID18 height accuracy estimate available here.
 JV6721
 JV6721.Click photographs - Photos may exist for this station.
 JV6721
 JV6721.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6721
 JV6721.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6721
 JV6721.The ellipsoidal height was determined by GPS observations
 JV6721.and is referenced to NAD 83.
 JV6721
 JV6721. The following values were computed from the NAD 83(2011) position.
 JV6721
 JV6721;                    North         East     Units Scale Factor Converg.
 JV6721;SPC MD       -   226,546.365   463,886.024   MT  1.00005459   +0 28 03.1
 JV6721;SPC MD       -   743,260.87  1,521,932.73   sFT  1.00005459   +0 28 03.1
 JV6721;UTM  18      - 4,395,778.413   392,404.530   MT  0.99974253   -0 48 06.8
 JV6721
 JV6721!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6721!SPC MD       -   0.99998545  x   1.00005459  =   1.00004004
 JV6721!UTM  18      -   0.99998545  x   0.99974253  =   0.99972798
 JV6721
 JV6721:                Primary Azimuth Mark                     Grid Az
 JV6721:SPC MD       -  BROAD AZ MK                              303 53 13.9
 JV6721:UTM  18      -  BROAD AZ MK                              305 09 23.8
 JV6721
 JV6721_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9240495778(NAD 83)
 JV6721
 JV6721|---------------------------------------------------------------------|
 JV6721| PID    Reference Object                     Distance      Geod. Az  |
 JV6721|                                                           dddmmss.s |
 JV6721| JV6722 BROAD AZ MK                         416.420 METERS 3042117.0 |
 JV6721|---------------------------------------------------------------------|
 JV6721
 JV6721                          SUPERSEDED SURVEY CONTROL
 JV6721
 JV6721  NAD 83(2007)-  39 42 18.31036(N)    076 15 18.33722(W) AD(2002.00) 0
 JV6721  ELLIP H (02/10/07)   92.781  (m)                       GP(2002.00)    
 JV6721  ELLIP H (09/18/02)   92.802  (m)                       GP(       ) 4 2
 JV6721  NAD 83(1991)-  39 42 18.31027(N)    076 15 18.33698(W) AD(       ) 1
 JV6721  ELLIP H (01/27/92)   92.803  (m)                       GP(       ) 4 1
 JV6721  NAD 83(1986)-  39 42 18.30327(N)    076 15 18.34298(W) AD(       ) 1
 JV6721  NGVD 29 (06/18/91)  125.9    (m)  UNKNOWN  model used  GPS OBS        
 JV6721
 JV6721.Superseded values are not recommended for survey control.
 JV6721
 JV6721.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6721.See file dsdata.pdf to determine how the superseded data were derived.
 JV6721
 JV6721_MARKER: DD = SURVEY DISK
 JV6721_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6721_STAMPING: 105 BROAD 1989
 JV6721_MARK LOGO: MD-025
 JV6721_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6721_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6721+STABILITY: SURFACE MOTION
 JV6721_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6721+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6721
 JV6721  HISTORY     - Date     Condition        Report By
 JV6721  HISTORY     - 1989     MONUMENTED       RDA
 JV6721  HISTORY     - 19980711 GOOD             USPSQD
 JV6721
 JV6721                          STATION DESCRIPTION
 JV6721
 JV6721'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6721'THE STATION IS LOCATED IN NORTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6721'0.5 MILE NORTH OF THE BROAD CREEK SCOUT RESERVE.
 JV6721'TO REACH THE STATION FROM THE INTERSECTION OF FEDERAL HIGHWAY 1 AND
 JV6721'STATE HIGHWAY 623 JUST ABOVE THE VILLAGE OF DARLINGTON PROCEED
 JV6721'NORTHWEST ALONG HIGHWAY 623 5.0 MILES TO THE STATION ON THE RIGHT.
 JV6721'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6721'ABOUT 1 INCH BELOW GROUND STAMPED 105 BROAD 1989.  THE STATION IS 42.0
 JV6721'FEET NORTHWEST OF A TRIPLE TRUNK SHORT NEEDLE PINE TREE, 22.7 FEET
 JV6721'NORTHEAST OF THE CENTERLINE OF HIGHWAY 623, AND 112.3 FEET SOUTHEAST
 JV6721'OF C AND P OF MARYLAND POLE NUMBER 235.
 JV6721
 JV6721                          STATION RECOVERY (1998)
 JV6721
 JV6721'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6721'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6722 ***********************************************************************
 JV6722  DESIGNATION -  BROAD AZ MK
 JV6722  PID         -  JV6722
 JV6722  STATE/COUNTY-  MD/HARFORD
 JV6722  COUNTRY     -  US
 JV6722  USGS QUAD   -  DELTA (2019)
 JV6722
 JV6722                         *CURRENT SURVEY CONTROL
 JV6722  ______________________________________________________________________
 JV6722* NAD 83(2011) POSITION- 39 42 25.92923(N) 076 15 32.76802(W)   ADJUSTED
 JV6722* NAD 83(2011) ELLIP HT-    88.010 (meters)        (06/27/12)   ADJUSTED
 JV6722* NAD 83(2011) EPOCH   -  2010.00
 JV6722* NAVD 88 ORTHO HEIGHT -   120.9   (meters)      397.    (feet) VERTCON3
 JV6722  ______________________________________________________________________
 JV6722  GEOID HEIGHT    -        -32.875 (meters)                     GEOID18
 JV6722  NAD 83(2011) X  -  1,167,137.182 (meters)                     COMP
 JV6722  NAD 83(2011) Y  - -4,772,980.129 (meters)                     COMP
 JV6722  NAD 83(2011) Z  -  4,053,084.536 (meters)                     COMP
 JV6722  LAPLACE CORR    -         -2.24  (seconds)                    DEFLEC18
 JV6722
 JV6722  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6722  Standards:
 JV6722         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6722            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6722  -------------------------------------------------------------------
 JV6722  NETWORK    2.51   5.17           1.15   0.70   2.64      0.65913111
 JV6722  -------------------------------------------------------------------
 JV6722  Click here for local accuracies and other accuracy information.
 JV6722
 JV6722.The horizontal coordinates were established by GPS observations
 JV6722.and adjusted by the National Geodetic Survey in June 2012.
 JV6722
 JV6722.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6722.been affixed to the stable North American tectonic plate. See 
 JV6722.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6722
 JV6722.The horizontal coordinates are valid at the epoch date displayed above
 JV6722.which is a decimal equivalence of Year/Month/Day.
 JV6722
 JV6722.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6722.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6722
 JV6722.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6722.GEOID18 height accuracy estimate available here.
 JV6722
 JV6722.Click photographs - Photos may exist for this station.
 JV6722
 JV6722.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6722
 JV6722.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6722
 JV6722.The ellipsoidal height was determined by GPS observations
 JV6722.and is referenced to NAD 83.
 JV6722
 JV6722. The following values were computed from the NAD 83(2011) position.
 JV6722
 JV6722;                    North         East     Units Scale Factor Converg.
 JV6722;SPC MD       -   226,778.557   463,540.320   MT  1.00005513   +0 27 54.0
 JV6722;SPC MD       -   744,022.65  1,520,798.53   sFT  1.00005513   +0 27 54.0
 JV6722;UTM  18      - 4,396,018.132   392,064.160   MT  0.99974343   -0 48 16.1
 JV6722
 JV6722!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6722!SPC MD       -   0.99998619  x   1.00005513  =   1.00004132
 JV6722!UTM  18      -   0.99998619  x   0.99974343  =   0.99972963
 JV6722
 JV6722:                Primary Azimuth Mark                     Grid Az
 JV6722:SPC MD       -  BROAD                                    123 53 13.8
 JV6722:UTM  18      -  BROAD                                    125 09 23.9
 JV6722
 JV6722_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9206496018(NAD 83)
 JV6722
 JV6722|---------------------------------------------------------------------|
 JV6722| PID    Reference Object                     Distance      Geod. Az  |
 JV6722|                                                           dddmmss.s |
 JV6722| JV6721 BROAD                               416.420 METERS 1242107.8 |
 JV6722|---------------------------------------------------------------------|
 JV6722
 JV6722                          SUPERSEDED SURVEY CONTROL
 JV6722
 JV6722  NAD 83(2007)-  39 42 25.92950(N)    076 15 32.76870(W) AD(2002.00) 0
 JV6722  ELLIP H (02/10/07)   88.032  (m)                       GP(2002.00)    
 JV6722  ELLIP H (09/18/02)   88.053  (m)                       GP(       ) 4 2
 JV6722  NAD 83(1991)-  39 42 25.92939(N)    076 15 32.76845(W) AD(       ) 1
 JV6722  ELLIP H (01/27/92)   88.054  (m)                       GP(       ) 4 1
 JV6722  NAD 83(1986)-  39 42 25.92238(N)    076 15 32.77447(W) AD(       ) 1
 JV6722  NGVD 29 (06/18/91)  121.2    (m)  UNKNOWN  model used  GPS OBS        
 JV6722
 JV6722.Superseded values are not recommended for survey control.
 JV6722
 JV6722.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6722.See file dsdata.pdf to determine how the superseded data were derived.
 JV6722
 JV6722_MARKER: DZ = AZIMUTH MARK DISK
 JV6722_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6722_STAMPING: 105 BROAD 1989
 JV6722_MARK LOGO: MD-025
 JV6722_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6722_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6722+STABILITY: SURFACE MOTION
 JV6722_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6722+SATELLITE: SATELLITE OBSERVATIONS - January 05, 1990
 JV6722
 JV6722  HISTORY     - Date     Condition        Report By
 JV6722  HISTORY     - 1989     MONUMENTED       RDA
 JV6722  HISTORY     - 19900105 GOOD
 JV6722  HISTORY     - 19980711 GOOD             USPSQD
 JV6722
 JV6722                          STATION DESCRIPTION
 JV6722
 JV6722'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6722'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTHWEST ALONG
 JV6722'HIGHWAY 623 0.23 MILES TO THE MARK ON THE RIGHT.
 JV6722'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6722'ABOUT 1 INCH BELOW GROUND STAMPED 105 BROAD 1989.  THE MARK IS 57.0
 JV6722'FEET NORTHWEST OF C AND P OF MARYLAND POLE NUMBER 241, 16.2 FEET
 JV6722'NORTHEAST OF THE CENTERLINE OF HIGHWAY 623, AND 69.2 FEET EAST OF
 JV6722'CONOWINGO POLE NUMBER 13886 AND 1366.23 FEET FROM THE STATION.
 JV6722
 JV6722                          STATION RECOVERY (1990)
 JV6722
 JV6722'RECOVERED 1990
 JV6722'RECOVERED IN GOOD CONDITION.
 JV6722
 JV6722                          STATION RECOVERY (1998)
 JV6722
 JV6722'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6722'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4722 ***********************************************************************
 AB4722  DESIGNATION -  BROAD RESET 1995
 AB4722  PID         -  AB4722
 AB4722  STATE/COUNTY-  MD/CARROLL
 AB4722  COUNTRY     -  US
 AB4722  USGS QUAD   -  MANCHESTER (2016)
 AB4722
 AB4722                         *CURRENT SURVEY CONTROL
 AB4722  ______________________________________________________________________
 AB4722* NAD 83(2011) POSITION- 39 40 29.33087(N) 076 53 30.75963(W)   ADJUSTED
 AB4722* NAD 83(2011) ELLIP HT-   235.024 (meters)        (06/27/12)   ADJUSTED
 AB4722* NAD 83(2011) EPOCH   -  2010.00
 AB4722* NAVD 88 ORTHO HEIGHT -   267.4   (meters)      877.    (feet) GPS OBS
 AB4722  ______________________________________________________________________
 AB4722  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4722  GEOID HEIGHT    -        -32.379 (meters)                     GEOID99
 AB4722  GEOID HEIGHT    -        -32.368 (meters)                     GEOID18
 AB4722  NAD 83(2011) X  -  1,114,900.727 (meters)                     COMP
 AB4722  NAD 83(2011) Y  - -4,787,925.669 (meters)                     COMP
 AB4722  NAD 83(2011) Z  -  4,050,411.200 (meters)                     COMP
 AB4722  LAPLACE CORR    -          3.11  (seconds)                    DEFLEC18
 AB4722
 AB4722  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4722  Standards:
 AB4722         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4722            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4722  -------------------------------------------------------------------
 AB4722  NETWORK    1.62   4.94           0.77   0.48   2.52     -0.08987649
 AB4722  -------------------------------------------------------------------
 AB4722  Click here for local accuracies and other accuracy information.
 AB4722
 AB4722.The horizontal coordinates were established by GPS observations
 AB4722.and adjusted by the National Geodetic Survey in June 2012.
 AB4722
 AB4722.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4722.been affixed to the stable North American tectonic plate. See 
 AB4722.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4722
 AB4722.The horizontal coordinates are valid at the epoch date displayed above
 AB4722.which is a decimal equivalence of Year/Month/Day.
 AB4722
 AB4722.The orthometric height was determined by GPS observations and a
 AB4722.high-resolution geoid model.
 AB4722
 AB4722.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4722.GEOID18 height accuracy estimate available here.
 AB4722
 AB4722.Click photographs - Photos may exist for this station.
 AB4722
 AB4722.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4722
 AB4722.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4722
 AB4722.The ellipsoidal height was determined by GPS observations
 AB4722.and is referenced to NAD 83.
 AB4722
 AB4722. The following values were computed from the NAD 83(2011) position.
 AB4722
 AB4722;                    North         East     Units Scale Factor Converg.
 AB4722;SPC MD       -   222,929.973   409,277.065   MT  1.00004707   +0 04 04.3
 AB4722;SPC MD       -   731,396.09  1,342,769.84   sFT  1.00004707   +0 04 04.3
 AB4722;UTM  18      - 4,393,376.386   337,740.947   MT  0.99992415   -1 12 29.1
 AB4722
 AB4722!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4722!SPC MD       -   0.99996313  x   1.00004707  =   1.00001020
 AB4722!UTM  18      -   0.99996313  x   0.99992415  =   0.99988728
 AB4722
 AB4722_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3774093376(NAD 83)
 AB4722
 AB4722                          SUPERSEDED SURVEY CONTROL
 AB4722
 AB4722  NAD 83(2007)-  39 40 29.33107(N)    076 53 30.76038(W) AD(2002.00) 0
 AB4722  ELLIP H (02/10/07)  235.044  (m)                       GP(2002.00)    
 AB4722  ELLIP H (08/30/02)  235.029  (m)                       GP(       ) 4 2
 AB4722  NAD 83(1991)-  39 40 29.33077(N)    076 53 30.76068(W) AD(       ) 1
 AB4722  ELLIP H (07/03/96)  234.951  (m)                       GP(       ) 1 1
 AB4722  NAVD 88 (07/03/96)  267.4    (m)  GEOID93  model used  GPS OBS        
 AB4722
 AB4722.Superseded values are not recommended for survey control.
 AB4722
 AB4722.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4722.See file dsdata.pdf to determine how the superseded data were derived.
 AB4722
 AB4722_MARKER: DD = SURVEY DISK
 AB4722_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4722_STAMPING: BROAD RESET 1995
 AB4722_MARK LOGO: MD-013
 AB4722_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4722_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4722+STABILITY: SURFACE MOTION
 AB4722_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4722+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4722
 AB4722  HISTORY     - Date     Condition        Report By
 AB4722  HISTORY     - 1995     MONUMENTED       MD-013
 AB4722
 AB4722                          STATION DESCRIPTION
 AB4722
 AB4722'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4722'STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) NORTH OF MANCHESTER. TO REACH
 AB4722'STATION FROM THE INTERSECTION OF MD ROUTE 30 (HANOVER PIKE) AND MD
 AB4722'ROUTE 27 (MANCHESTER ROAD) IN MANCHESTER, GO NORTHWEST ON MD ROUTE 30
 AB4722'FOR 0.8 MI (1.3 KM) TO THE INTERSECTION WITH FRIDINGER MILL ROAD AND
 AB4722'THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4722'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 37.8 FT
 AB4722'(11.5 M) WEST OF THE CENTERLINE OF MD ROUTE 30, 29.3 FT (8.9 M) SOUTH
 AB4722'OF THE CENTERLINE OF FRIDINGER MILL ROAD, 83.6 FT (25.5 M) SOUTH OF
 AB4722'TELEPHONE POLE NO.201, 85.0 FT (25.9 M) SOUTH OF A STATE ROADS
 AB4722'COMMISSION CONCRETE MONUMENT ON THE NORTH SIDE OF FRIDINGER ROAD AND
 AB4722'24.6 FT (7.5 M) SOUTHEAST OF TELEPHONE PEDESTAL NO. 1.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7515 ***********************************************************************
 HV7515  DESIGNATION -  BROCK
 HV7515  PID         -  HV7515
 HV7515  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7515  COUNTRY     -  US
 HV7515  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7515
 HV7515                         *CURRENT SURVEY CONTROL
 HV7515  ______________________________________________________________________
 HV7515* NAD 83(1993) POSITION- 38 50 51.55654(N) 076 46 01.87878(W)   ADJUSTED
 HV7515* NAVD 88 ORTHO HEIGHT -    54.7   (meters)      179.    (feet) VERTCON3
 HV7515  ______________________________________________________________________
 HV7515  GEOID HEIGHT    -        -32.805 (meters)                     GEOID18
 HV7515  LAPLACE CORR    -         -5.92  (seconds)                    DEFLEC18
 HV7515  HORZ ORDER      -  FIRST
 HV7515
 HV7515.The horizontal coordinates were established by classical geodetic methods
 HV7515.and adjusted by the National Geodetic Survey in November 1994.
 HV7515
 HV7515.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7515.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7515
 HV7515.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7515.GEOID18 height accuracy estimate available here.
 HV7515
 HV7515.Click photographs - Photos may exist for this station.
 HV7515
 HV7515.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7515
 HV7515. The following values were computed from the NAD 83(1993) position.
 HV7515
 HV7515;                    North         East     Units Scale Factor Converg.
 HV7515;SPC MD       -   131,120.339   420,209.762   MT  0.99994997   +0 08 46.0
 HV7515;SPC MD       -   430,183.98  1,378,638.19   sFT  0.99994997   +0 08 46.0
 HV7515;UTM  18      - 4,301,354.591   346,643.200   MT  0.99988961   -1 06 31.3
 HV7515
 HV7515!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7515!SPC MD       -   0.99999657  x   0.99994997  =   0.99994654
 HV7515!UTM  18      -   0.99999657  x   0.99988961  =   0.99988618
 HV7515
 HV7515:                Primary Azimuth Mark                     Grid Az
 HV7515:SPC MD       -  HARRISON 2                               041 33 50.8
 HV7515:UTM  18      -  HARRISON 2                               042 49 08.1
 HV7515
 HV7515_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4664301354(NAD 83)
 HV7515
 HV7515|---------------------------------------------------------------------|
 HV7515| PID    Reference Object                     Distance      Geod. Az  |
 HV7515|                                                           dddmmss.s |
 HV7515| HV7237 HARRISON 2                          APPROX. 6.3 KM 0414236.8 |
 HV7515| HV7232 MEADOWS VILLAGE WSSC TANK           APPROX. 4.1 KM 1054650.8 |
 HV7515| HV7230 UPPER MARLBORO RACE TRACK TANK      APPROX. 4.2 KM 1551413.2 |
 HV7515| HV7518 UPPER MARLBORO CO CTHSE SPIRE       APPROX. 3.8 KM 1565934.4 |
 HV7515| HV7517 UPPER MARLBORO MUN TANK             APPROX. 3.6 KM 1670531.9 |
 HV7515| CX2134 BROCK RM 1                           25.675 METERS 27332     |
 HV7515| HV7513 OAK GROVE PEPCO MICROWAVE           APPROX. 3.1 KM 2883736.7 |
 HV7515| CX2135 BROCK RM 2                           20.556 METERS 31740     |
 HV7515| HV7524 17497 WSSC 1970                     493.578 METERS 3341151.7 |
 HV7515|---------------------------------------------------------------------|
 HV7515
 HV7515                          SUPERSEDED SURVEY CONTROL
 HV7515
 HV7515  NAD 83(1991)-  38 50 51.55633(N)    076 46 01.87880(W) AD(       ) 1
 HV7515  NAD 83(1986)-  38 50 51.55354(N)    076 46 01.89154(W) AD(       ) 1
 HV7515  NAD 27      -  38 50 51.14761(N)    076 46 03.00234(W) AD(       ) 1
 HV7515  NGVD 29 (07/19/86)   54.9    (m)          180.     (f) VERT ANG       
 HV7515
 HV7515.Superseded values are not recommended for survey control.
 HV7515
 HV7515.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7515.See file dsdata.pdf to determine how the superseded data were derived.
 HV7515
 HV7515_MARKER: DS = TRIANGULATION STATION DISK
 HV7515_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7515_STAMPING: BROCK 1970
 HV7515_MARK LOGO: CGS
 HV7515_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7515+STABILITY: SURFACE MOTION
 HV7515
 HV7515  HISTORY     - Date     Condition        Report By
 HV7515  HISTORY     - 1970     MONUMENTED       NGS
 HV7515
 HV7515                          STATION DESCRIPTION
 HV7515
 HV7515'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7515'THE STATION IS ABOUT 4 MILES WEST OF THE PRINCE GEORGES-ANNE
 HV7515'ARUNDEL COUNTY LINE, 3 MILES NORTH-NORTHWEST OF UPPER MARLBORO
 HV7515'AND 1-1/2 MILES SOUTHEAST OF OAK GROVE, NEAR THE END OF A GRADED
 HV7515'ROAD OF A TREE COVERED KNOLL, AND ON PROPERTY OWNED BY HARRY
 HV7515'JONES, ADDRESS 30001 LARGO ROAD, UPPER MARLBORO, MARYLAND.
 HV7515'
 HV7515'TO REACH THE STATION FROM STATE HIGHWAYS 408 AND 202 IN UPPER
 HV7515'MARLBORO, GO NORTH ON HIGHWAY 202 FOR 1.7 MILES TO THE JUNCTION
 HV7515'WITH EATON DRIVE ON THE RIGHT.  CONTINUE NORTHWEST ON HIGHWAY 202
 HV7515'FOR 0.7 MILE TO A SIDE ROAD LEFT LEADING TO JONES ELECTRIC
 HV7515'COMPANY.  (TO REACH THE AZIMUTH MARK FROM THIS POINT, CONTINUE
 HV7515'NORTHWEST ON THE HIGHWAY FOR 0.15 MILE TO THE MARK ON THE
 HV7515'LEFT.) TURN LEFT AND GO WEST FOR 0.05 MILE TO THE ELECTRIC
 HV7515'SHOP.  CONTINUE WEST ON GRADED ROAD, PASSING TO THE SOUTH OF
 HV7515'THE ELECTRIC SHOP FOR 0.05 MILE TO WHERE THE ROAD TURNS SHARP
 HV7515'LEFT.  TURN SHARP LEFT AND GO EASTERLY FOR ABOUT 100 FEET
 HV7515'TO THE END OF THE ROAD, THE EDGE OF THE WOODS AND THE STATION.
 HV7515'
 HV7515'STATION MARK IS A STANDARD DISK, STAMPED BROCK 1970, SET IN THE
 HV7515'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV7515'FLUSH WITH THE GROUND SURFACE.  IT IS 32.0 FEET WEST OF A FENCE,
 HV7515'23.3 FEET NORTHEAST OF A DOUBLE TREE, OAK AND LOCUST, 15.8 FEET
 HV7515'WEST OF A SPRUCE TREE AND 11.0 FEET SOUTH OF THE SOUTH EDGE OF A
 HV7515'GULLY.  THE UNDERGROUND MARK IS 42 INCHES BELOW THE GROUND
 HV7515'SURFACE.
 HV7515'
 HV7515'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED BROCK NO 1 1970,
 HV7515'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7515'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 34.5 FEET NORTH OF
 HV7515'A DOUBLE ASH TREE, 17.0 FEET SOUTH-SOUTHWEST OF A CLUSTER OF
 HV7515'4 SMALL TREES AND ABOUT 2 FEET LOWER THAN THE STATION.
 HV7515'
 HV7515'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED BROCK NO 2 1970,
 HV7515'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7515'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 19.5 FEET EAST OF
 HV7515'A FORKED LOCUST TREE, 4.0 FEET NORT OF THE NORTH EDGE OF THE
 HV7515'GULLY AND ABOUT 1 FOOT LOWER THAN THE STATION.
 HV7515'
 HV7515'AZIMUTH MARK IS A STANDARD DISK, STAMPED BROCK 1970, SET IN THE
 HV7515'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS
 HV7515'2 INCHES ABOVE THE GROUND.  IT IS 44.0 FEET WEST OF THE CENTERLINE
 HV7515'OF HIGHWAY 202 AND 1.6 FEET SOUTH OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2228 ***********************************************************************
 HU2228  DESIGNATION -  BRODNAX
 HU2228  PID         -  HU2228
 HU2228  STATE/COUNTY-  MD/WICOMICO
 HU2228  COUNTRY     -  US
 HU2228  USGS QUAD   -  HEBRON (2016)
 HU2228
 HU2228                         *CURRENT SURVEY CONTROL
 HU2228  ______________________________________________________________________
 HU2228* NAD 83(1986) POSITION- 38 24 12.38   (N) 075 42 14.67   (W)   HD_HELD1
 HU2228* NAVD 88 ORTHO HEIGHT -    12.004 (meters)       39.38  (feet) ADJUSTED
 HU2228  ______________________________________________________________________
 HU2228  GEOID HEIGHT    -        -35.689 (meters)                     GEOID18
 HU2228  DYNAMIC HEIGHT  -         11.996 (meters)       39.36  (feet) COMP
 HU2228  MODELED GRAVITY -    980,010.1   (mgal)                       NAVD 88
 HU2228
 HU2228  VERT ORDER      -  SECOND    CLASS I
 HU2228
 HU2228.The horizontal coordinates were determined by differentially corrected
 HU2228.hand held GPS observations or other comparable positioning techniques
 HU2228.and have an estimated accuracy of +/- 3 meters.
 HU2228
 HU2228.The orthometric height was determined by differential leveling and
 HU2228.adjusted by the NATIONAL GEODETIC SURVEY
 HU2228.in June 1991.
 HU2228
 HU2228.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2228.GEOID18 height accuracy estimate available here.
 HU2228
 HU2228.Click photographs - Photos may exist for this station.
 HU2228
 HU2228.The dynamic height is computed by dividing the NAVD 88
 HU2228.geopotential number by the normal gravity value computed on the
 HU2228.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2228.degrees latitude (g = 980.6199 gals.).
 HU2228
 HU2228.The modeled gravity was interpolated from observed gravity values.
 HU2228
 HU2228;                    North         East    Units  Estimated Accuracy
 HU2228;SPC MD       -    82,588.2     513,192.2     MT  (+/- 3 meters HH1 GPS) 
 HU2228
 HU2228_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3852350813(NAD 83)
 HU2228
 HU2228                          SUPERSEDED SURVEY CONTROL
 HU2228
 HU2228  NGVD 29 (06/12/91)   12.251  (m)           40.19   (f) ADJUSTED    2 1
 HU2228
 HU2228.Superseded values are not recommended for survey control.
 HU2228
 HU2228.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2228.See file dsdata.pdf to determine how the superseded data were derived.
 HU2228
 HU2228_MARKER: DD = SURVEY DISK
 HU2228_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2228_STAMPING: BRODNAX 1989
 HU2228_MARK LOGO: MDSHA
 HU2228_PROJECTION: RECESSED 3 CENTIMETERS
 HU2228_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2228_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2228+STABILITY: SURFACE MOTION
 HU2228_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2228+SATELLITE: SATELLITE OBSERVATIONS - September 06, 2018
 HU2228
 HU2228  HISTORY     - Date     Condition        Report By
 HU2228  HISTORY     - 1989     MONUMENTED       MDSHA
 HU2228  HISTORY     - 19900124 GOOD             NGS
 HU2228  HISTORY     - 20111120 GOOD             GEOCAC
 HU2228  HISTORY     - 20180906 GOOD             ARCSHE
 HU2228
 HU2228                          STATION DESCRIPTION
 HU2228
 HU2228'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2228'2.1 KM (1.30 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU2228'ROAD) FROM THE POST OFFICE IN HEBRON, THENCE 0.3 KM (0.19 MI)
 HU2228'SOUTHEASTERLY ALONG QUANTICO CREEK ROAD, 34.2 M (112.20 FT) WEST OF
 HU2228'THE WEST CORNER OF A HOUSE, 6.9 M (22.64 FT) NORTHEAST OF THE CENTER
 HU2228'OF THE ROAD, 1.6 M (5.25 FT) WEST-NORTHWEST OF THE WEST CORNER OF
 HU2228'ELECTRIC TRANSFORMER BOX NUMBER 43859 94552, LEVEL WITH THE ROAD, AND
 HU2228'IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2228
 HU2228                          STATION RECOVERY (2011)
 HU2228
 HU2228'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 HU2228'RECOVERED AS DESCRIBED. STATION IS ABOUT TWO INCHES BELOW GROUND
 HU2228'LEVEL.
 HU2228
 HU2228                          STATION RECOVERY (2018)
 HU2228
 HU2228'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 HU2228'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6608 ***********************************************************************
 HV6608  DESIGNATION -  BROME
 HV6608  PID         -  HV6608
 HV6608  STATE/COUNTY-  MD/ST MARYS
 HV6608  COUNTRY     -  US
 HV6608  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6608
 HV6608                         *CURRENT SURVEY CONTROL
 HV6608  ______________________________________________________________________
 HV6608* NAD 83(1993) POSITION- 38 10 54.01797(N) 076 26 03.85576(W)   ADJUSTED
 HV6608* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV6608  ______________________________________________________________________
 HV6608  GEOID HEIGHT    -        -34.758 (meters)                     GEOID18
 HV6608  LAPLACE CORR    -         -5.98  (seconds)                    DEFLEC18
 HV6608  HORZ ORDER      -  THIRD
 HV6608
 HV6608.The horizontal coordinates were established by classical geodetic methods
 HV6608.and adjusted by the National Geodetic Survey in November 1994.
 HV6608
 HV6608.The orthometric height was scaled from a topographic map.
 HV6608
 HV6608.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6608.GEOID18 height accuracy estimate available here.
 HV6608
 HV6608.Click photographs - Photos may exist for this station.
 HV6608
 HV6608.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6608
 HV6608. The following values were computed from the NAD 83(1993) position.
 HV6608
 HV6608;                    North         East     Units Scale Factor Converg.
 HV6608;SPC MD       -    57,321.658   449,555.660   MT  1.00002269   +0 21 18.0
 HV6608;SPC MD       -   188,062.81  1,474,917.19   sFT  1.00002269   +0 21 18.0
 HV6608;UTM  18      - 4,226,944.385   374,371.317   MT  0.99979437   -0 53 12.5
 HV6608
 HV6608!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6608!SPC MD       -   1.00000456  x   1.00002269  =   1.00002725
 HV6608!UTM  18      -   1.00000456  x   0.99979437  =   0.99979893
 HV6608
 HV6608:                Primary Azimuth Mark                     Grid Az
 HV6608:SPC MD       -  MCKAY                                    273 09 29.0
 HV6608:UTM  18      -  MCKAY                                    274 23 59.5
 HV6608
 HV6608_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7437126944(NAD 83)
 HV6608
 HV6608|---------------------------------------------------------------------|
 HV6608| PID    Reference Object                     Distance      Geod. Az  |
 HV6608|                                                           dddmmss.s |
 HV6608| CX2136 BROME RM                              5.650 METERS 10348     |
 HV6608| HV6607 MCKAY                               APPROX. 1.1 KM 2733047.0 |
 HV6608|---------------------------------------------------------------------|
 HV6608
 HV6608                          SUPERSEDED SURVEY CONTROL
 HV6608
 HV6608  NAD 83(1991)-  38 10 54.01711(N)    076 26 03.85885(W) AD(       ) 3
 HV6608  NAD 83(1986)-  38 10 54.01771(N)    076 26 03.87237(W) AD(       ) 3
 HV6608  NAD 27      -  38 10 53.63800(N)    076 26 05.09000(W) AD(       ) 3
 HV6608  USSD        -  38 10 54.02100(N)    076 26 04.79600(W) AD(       ) 3
 HV6608
 HV6608.Superseded values are not recommended for survey control.
 HV6608
 HV6608.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6608.See file dsdata.pdf to determine how the superseded data were derived.
 HV6608
 HV6608_MARKER: Z = SEE DESCRIPTION
 HV6608_SETTING: 0 = UNSPECIFIED SETTING
 HV6608
 HV6608  HISTORY     - Date     Condition        Report By
 HV6608  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6608  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6608  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6608
 HV6608                          STATION DESCRIPTION
 HV6608
 HV6608'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6608'STATION IS ON THE EASTERN SHORE OF ST. MARYS RIVER, ABOUT 3/8 MILE
 HV6608'S OF BROMES WHARF AT ST. MARYS, IN EDGE OF WOODS, ABOUT 6 FEET ABOVE
 HV6608'HIGH WATER, 2 YARDS SE OF SHORE, AND 25 YARDS FROM FOOT OF SLOPE.
 HV6608'
 HV6608'STATION MARK IS CENTER OF 3-INCH SQUARE WOODEN BOX WITH TOP ABOUT
 HV6608'FLUSH WITH SURFACE OF GROUND.
 HV6608'
 HV6608'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6608'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONRETE POST
 HV6608'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6608'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6608'5.65 METERS (18.54 FEET) FROM THE STATION S 76 DEG
 HV6608'12 MIN E.  DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE ARE
 HV6608'AS ARE AS FOLLOWS--PEAK OF ROOF BETWEEN TWO CHIMNEYS OF HOUSE AT
 HV6608'PORTOBELLO, 1 MILE, S 67 DEG 16 MIN W.  PEAK OF ROOF BETWEEN TWO
 HV6608'CHIMNEYS OF MC KAYS HOUSE, 3/4 MILE, N 82 DEG 19 MIN W.  PEAK OF
 HV6608'BARN, 3/4 MILE, N 39 DEG 59 MIN W.  RIGHT CHIMNEY OF TWO-STORY
 HV6608'HOUSE, 3/4 MILE, N 38 DEG 35 MIN W.  CHIMNEY OF SMALL HOUSE, 1/2
 HV6608'MILE, N 26 DEG 03 MIN W.  STOVEPIPE OF SMALL CABIN, 1/2 MILE, N 23
 HV6608'DEG 02 MIN W.  PEAK OF ROOF OF BROMES WHARF HOUSE, 3/8 MILE, N 10
 HV6608'DEG 59 MIN W.  NAIL IN BLAZE IN CHESTNUT TREE, 4.32 METERS (14.17
 HV6608'FEET), N 70 DEG 47 MIN E.  NAIL IN BLAZE IN CHERRY TREE, 6.40
 HV6608'METERS (21.00 FEET), S 58 DEG 46 MIN E.
 HV6608
 HV6608                          STATION RECOVERY (1942)
 HV6608
 HV6608'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6608'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED FOR
 HV6608'BY TWO MEN FOR TWO HOURS.  NO TRACE OF THIS STATION AND ITS
 HV6608'REFERENCE MARK COULD BE FOUND.  IT IS RECOMMENDED THAT THIS
 HV6608'STATION AND ITS REFERENCE MARK BE CLASSIFIED AS LOST.
 HV6608
 HV6608                          STATION RECOVERY (1958)
 HV6608
 HV6608'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6608'A THOROUGH SEARCH WAS MADE FOR THIS STATION WITHOUT RESULTS.  DUE
 HV6608'TO THE HEAVY EROSION OF THE SHORELINE, THE STATION HAS PROBABLY
 HV6608'BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5940 ***********************************************************************
 JV5940  DESIGNATION -  BROOKLYN
 JV5940  PID         -  JV5940
 JV5940  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5940  COUNTRY     -  US
 JV5940  USGS QUAD   -  BELTSVILLE (2016)
 JV5940
 JV5940                         *CURRENT SURVEY CONTROL
 JV5940  ______________________________________________________________________
 JV5940* NAD 83(1991) POSITION- 39 06 52.93150(N) 076 54 07.33926(W)   ADJUSTED
 JV5940* NAVD 88 ORTHO HEIGHT -   134.4   (meters)      441.    (feet) VERTCON3
 JV5940  ______________________________________________________________________
 JV5940  GEOID HEIGHT    -        -32.123 (meters)                     GEOID18
 JV5940  LAPLACE CORR    -         -3.98  (seconds)                    DEFLEC18
 JV5940  HORZ ORDER      -  FIRST
 JV5940
 JV5940.The horizontal coordinates were established by classical geodetic methods
 JV5940.and adjusted by the National Geodetic Survey in January 1992.
 JV5940
 JV5940.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5940.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5940
 JV5940.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5940.GEOID18 height accuracy estimate available here.
 JV5940
 JV5940.Click photographs - Photos may exist for this station.
 JV5940
 JV5940.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5940
 JV5940. The following values were computed from the NAD 83(1991) position.
 JV5940
 JV5940;                    North         East     Units Scale Factor Converg.
 JV5940;SPC MD       -   160,744.137   408,471.965   MT  0.99995852   +0 03 41.3
 JV5940;SPC MD       -   527,374.72  1,340,128.44   sFT  0.99995852   +0 03 41.3
 JV5940;UTM  18      - 4,331,227.743   335,559.158   MT  0.99993296   -1 12 00.8
 JV5940
 JV5940!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5940!SPC MD       -   0.99998396  x   0.99995852  =   0.99994248
 JV5940!UTM  18      -   0.99998396  x   0.99993296  =   0.99991692
 JV5940
 JV5940:                Primary Azimuth Mark                     Grid Az
 JV5940:SPC MD       -  BROOKLYN AZ MK                           357 55 05.4
 JV5940:UTM  18      -  BROOKLYN AZ MK                           359 10 47.5
 JV5940
 JV5940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3555931227(NAD 83)
 JV5940
 JV5940|---------------------------------------------------------------------|
 JV5940| PID    Reference Object                     Distance      Geod. Az  |
 JV5940|                                                           dddmmss.s |
 JV5940| CB1022 BROOKLYN RM 1                        13.499 METERS 06351     |
 JV5940| CB1023 BROOKLYN RM 2                        15.983 METERS 30208     |
 JV5940| CB1021 BROOKLYN AZ MK                                     3575846.7 |
 JV5940|---------------------------------------------------------------------|
 JV5940
 JV5940                          SUPERSEDED SURVEY CONTROL
 JV5940
 JV5940  NAD 83(1986)-  39 06 52.93053(N)    076 54 07.34892(W) AD(       ) 1
 JV5940  NAD 27      -  39 06 52.54095(N)    076 54 08.44465(W) AD(       ) 1
 JV5940  NGVD 29 (07/19/86)  134.6    (m)          442.     (f) VERT ANG       
 JV5940
 JV5940.Superseded values are not recommended for survey control.
 JV5940
 JV5940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5940.See file dsdata.pdf to determine how the superseded data were derived.
 JV5940
 JV5940_MARKER: DS = TRIANGULATION STATION DISK
 JV5940_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5940_STAMPING: BROOKLYN 1969
 JV5940_MARK LOGO: CGS
 JV5940_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5940+STABILITY: SURFACE MOTION
 JV5940
 JV5940  HISTORY     - Date     Condition        Report By
 JV5940  HISTORY     - 1970     MONUMENTED       NGS
 JV5940
 JV5940                          STATION DESCRIPTION
 JV5940
 JV5940'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5940'RM 1 TO RM 2 OBSTRUCTED.
 JV5940'
 JV5940'THE STATION IS ABOUT 2 MILES EAST OF BURTONSVILLE AND 3 MILES
 JV5940'WEST-NORTHWEST OF LAUREL, ON TOP OF A RIDGE AND NEAR A BARN AND
 JV5940'FARM HOUSE.
 JV5940'
 JV5940'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 29 AND
 JV5940'STATE HIGHWAY 198 IN THE EAST PART OF BURTONSVILLE, GO EASTERLY
 JV5940'ON HIGHWAY 198 FOR 1.35 MILES TO THE JUNCTION WITH RIDING STABLE
 JV5940'ROAD ON THE LEFT.  TURN LEFT AND GO NORTH AND NORTHEAST ON RIDING
 JV5940'STABLE ROAD FOR 0.7 MILE TO THE JUNCTION WITH RIDING COURT
 JV5940'ROAD.  CONTINUE NORTHEASTERLY ON RIDING STABLE ROAD, WHICH
 JV5940'CHANGES NAMES TO BROOKLYN BRIDGE ROAD AT THE COUNTY LINE FOR 0.25
 JV5940'MILE TO A FARM DRIVE ON THE RIGHT.  (TO REACH THE AZIMUTH
 JV5940'MARK FROM THIS POINT, CONTINUE NORTHEASTERLY ON BROOKLYN
 JV5940'BRIDGE ROAD FOR 0.15 MILE TO A DRIVEWAY ON THE LEFT.  TURN
 JV5940'LEFT AND GO NORTHERLY ON DRIVEWAY FOR 0.15 MILE TO THE MARK ON
 JV5940'THE LEFT JUST BEFORE REACHING A RANCH HOUSE.) TURN RIGHT
 JV5940'AND GO EASTERLY, UPHILL ON DRIVEWAY FOR 0.05 MILE TO THE TOP
 JV5940'OF RIDGE, A BARN AND THE STATION.
 JV5940'
 JV5940'STATION MARK IS A STANDARD DISK, STAMPED BROOKLYN 1969, SET IN
 JV5940'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 JV5940'FLUSH WITH THE GROUND SURFACE.  IT IS 67.0 FEET SOUTH OF THE WEST
 JV5940'CORNER OF THE BARN, 47.5 FEET SOUTHWEST OF THE SOUTH CORNER OF THE
 JV5940'BARN AND 29.0 FEET SOUTHEAST OF THE CENTERLINE OF A GRAVELED
 JV5940'DRIVE.  THE UNDERGROUND MARK IS 40 INCHES BELOW THE GROUND
 JV5940'SURFACE.
 JV5940'
 JV5940'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED BROOKLYN NO 1 1969,
 JV5940'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV5940'IS FLUSH WITH THE GROUND SURFACE.  IT IS 16.5 FEET NORTHEAST OF THE
 JV5940'CENTERLINE OF A TRACK ROAD, 4.0 FEET SOUTHWEST OF THE SOUTH CORNER
 JV5940'OF THE BARN AND ABOUT 2 FEET LOWER THAN THE STATION.
 JV5940'
 JV5940'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED BROOKLYN NO 2 1969,
 JV5940'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV5940'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 20.5 FEET NORTHWEST
 JV5940'OF THE CENTERLINE OF THE GRAVELED DRIVEWAY, 3.7 FEET SOUTH OF THE
 JV5940'SOUTH CORNER OF A SMALL SHED AND ABOUT 1 FOOT HIGHER THAN THE
 JV5940'STATION.
 JV5940'
 JV5940'AZIMUTH MARK IS A STANDARD DISK, STAMPED BROOKLYN 1969, SET IN
 JV5940'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 JV5940'FLUSH WITH THE GROUND SURFACE.  IT IS 38.0 FEET NORTH OF THE
 JV5940'CENTERLINE OF A PAVED DRIVEWAY, 13.0 FEET SOUTH OF THE CENTERLINE
 JV5940'OF A PAVED DRIVEWAY AND 1.6 FEET WEST OF POWER LINE POLE NUMBER
 JV5940'293579.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5669 ***********************************************************************
 JV5669  DESIGNATION -  BROOKLYN CHURCH SPIRE
 JV5669  PID         -  JV5669
 JV5669  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5669  COUNTRY     -  US
 JV5669  USGS QUAD   -  CURTIS BAY (2016)
 JV5669
 JV5669                         *CURRENT SURVEY CONTROL
 JV5669  ______________________________________________________________________
 JV5669* NAD 83(1991) POSITION- 39 14 15.03205(N) 076 36 24.61270(W)   ADJUSTED
 JV5669  ______________________________________________________________________
 JV5669  GEOID HEIGHT    -        -32.816 (meters)                     GEOID18
 JV5669  LAPLACE CORR    -         -5.04  (seconds)                    DEFLEC18
 JV5669  HORZ ORDER      -  THIRD
 JV5669
 JV5669.The horizontal coordinates were established by classical geodetic methods
 JV5669.and adjusted by the National Geodetic Survey in January 1992.
 JV5669
 JV5669.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5669.GEOID18 height accuracy estimate available here.
 JV5669
 JV5669.Click photographs - Photos may exist for this station.
 JV5669
 JV5669.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5669
 JV5669. The following values were computed from the NAD 83(1991) position.
 JV5669
 JV5669;                    North         East     Units Scale Factor Converg.
 JV5669;SPC MD       -   174,445.938   433,943.019   MT  0.99996973   +0 14 48.3
 JV5669;SPC MD       -   572,328.05  1,423,694.72   sFT  0.99996973   +0 14 48.3
 JV5669;UTM  18      - 4,344,363.922   361,323.872   MT  0.99983679   -1 00 59.6
 JV5669
 JV5669_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6132344363(NAD 83)
 JV5669
 JV5669                          SUPERSEDED SURVEY CONTROL
 JV5669
 JV5669  NAD 83(1986)-  39 14 15.02855(N)    076 36 24.62187(W) AD(       ) 3
 JV5669  NAD 27      -  39 14 14.64700(N)    076 36 25.74400(W) AD(       ) 3
 JV5669  USSD        -  39 14 15.00900(N)    076 36 25.58100(W) AD(       ) 3
 JV5669
 JV5669.Superseded values are not recommended for survey control.
 JV5669
 JV5669.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5669.See file dsdata.pdf to determine how the superseded data were derived.
 JV5669
 JV5669_MARKER: 90 = CHURCH SPIRE
 JV5669_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5669+SATELLITE: SATELLITE OBSERVATIONS - January 21, 2002
 JV5669
 JV5669  HISTORY     - Date     Condition        Report By
 JV5669  HISTORY     - 1915     FIRST OBSERVED   CGS
 JV5669  HISTORY     - 1975     GOOD             NGS
 JV5669  HISTORY     - 1985     GOOD             USPSQD
 JV5669  HISTORY     - 20020121 GOOD             USPSQD
 JV5669
 JV5669                          STATION DESCRIPTION
 JV5669
 JV5669'DESCRIBED BY COAST AND GEODETIC SURVEY 1915 (EWE)
 JV5669'S OF THE PATAPSCO RIVER IN THE VILLAGE OF BROOKLYN.  STATION IS
 JV5669'CROSS ON CHURCH SPIRE, OPEN TOWER.
 JV5669
 JV5669                          STATION RECOVERY (1975)
 JV5669
 JV5669'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5669'STATION RECOVERED IN GOOD CONDITION.  NEW DESCRIPTION FOLLOWS--
 JV5669'
 JV5669'CHURCH IS NAMED CRISP MEMORIAL CHURCH, BUILT IN 1887.  THE CHURCH
 JV5669'IS BUILT OF STONE AND IS GREY IN COLOR.  THE POINT INTERSECTED
 JV5669'IS AN OPEN STEEPLE WITH THE METAL ORNAMENT SURMOUNTING THE
 JV5669'STEEPLE.  THE CHURCH IS LOCATED AT THE CORNER OF E. PATAPSCO
 JV5669'AVE. AND 3RD STREET IN THE SECTION OF BALTIMORE KNOWN AS
 JV5669'BROOKLYN.  THE POSITION OF THE CHURCH SPIRE WAS VERIFIED AS IT
 JV5669'WAS USED IN SEVERAL FIXES WITH CHECKS.  THE CHURCH IS NOT
 JV5669'PRESENTLY IN USE AND IS BOARDED UP.
 JV5669
 JV5669                          STATION RECOVERY (1985)
 JV5669
 JV5669'RECOVERY NOTE BY US POWER SQUADRON 1985 (WRB)
 JV5669'STATION RECOVERED AS PER DESCRIBED BY GWJ IN 1975, STATION IN
 JV5669'GOOD CONDITION.
 JV5669
 JV5669                          STATION RECOVERY (2002)
 JV5669
 JV5669'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV5669'BUILDING IS NOW BALTIMORE CITY'S CHESAPEAKE CENTER FOR YOUTH
 JV5669'OPPORTUNITIES
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6446 ***********************************************************************
 HV6446  DESIGNATION -  BROOKS
 HV6446  PID         -  HV6446
 HV6446  STATE/COUNTY-  MD/DORCHESTER
 HV6446  COUNTRY     -  US
 HV6446  USGS QUAD   -  GOLDEN HILL (2016)
 HV6446
 HV6446                         *CURRENT SURVEY CONTROL
 HV6446  ______________________________________________________________________
 HV6446* NAD 83(1991) POSITION- 38 27 38.03637(N) 076 11 41.24813(W)   ADJUSTED
 HV6446* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6446  ______________________________________________________________________
 HV6446  GEOID HEIGHT    -        -34.957 (meters)                     GEOID18
 HV6446  LAPLACE CORR    -         -5.75  (seconds)                    DEFLEC18
 HV6446  HORZ ORDER      -  FIRST
 HV6446
 HV6446.The horizontal coordinates were established by classical geodetic methods
 HV6446.and adjusted by the National Geodetic Survey in January 1992.
 HV6446
 HV6446.The orthometric height was scaled from a topographic map.
 HV6446
 HV6446.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6446.GEOID18 height accuracy estimate available here.
 HV6446
 HV6446.Click photographs - Photos may exist for this station.
 HV6446
 HV6446.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6446
 HV6446. The following values were computed from the NAD 83(1991) position.
 HV6446
 HV6446;                    North         East     Units Scale Factor Converg.
 HV6446;SPC MD       -    88,435.946   470,276.274   MT  0.99997595   +0 30 19.4
 HV6446;SPC MD       -   290,143.60  1,542,898.08   sFT  0.99997595   +0 30 19.4
 HV6446;UTM  18      - 4,257,593.813   395,758.247   MT  0.99973382   -0 44 35.5
 HV6446
 HV6446!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6446!SPC MD       -   1.00000536  x   0.99997595  =   0.99998131
 HV6446!UTM  18      -   1.00000536  x   0.99973382  =   0.99973918
 HV6446
 HV6446:                Primary Azimuth Mark                     Grid Az
 HV6446:SPC MD       -  BROOKS AZ MK                             004 58 41.9
 HV6446:UTM  18      -  BROOKS AZ MK                             006 13 36.8
 HV6446
 HV6446_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9575857593(NAD 83)
 HV6446
 HV6446|---------------------------------------------------------------------|
 HV6446| PID    Reference Object                     Distance      Geod. Az  |
 HV6446|                                                           dddmmss.s |
 HV6446| CX2137 BROOKS AZ MK                                       0052901.3 |
 HV6446| HV6447 CHURCH CREEK LOOKOUT TOWER          APPROX. 4.8 KM 0713310.0 |
 HV6446| HV6403 BLACKWATER LOOKOUT TOWER            APPROX. 9.3 KM 1060610.5 |
 HV6446| CX2138 BROOKS RM 1                          41.238 METERS 17704     |
 HV6446| CX2139 BROOKS RM 2                          27.392 METERS 29154     |
 HV6446|---------------------------------------------------------------------|
 HV6446
 HV6446                          SUPERSEDED SURVEY CONTROL
 HV6446
 HV6446  NAD 83(1986)-  38 27 38.03371(N)    076 11 41.26537(W) AD(       ) 1
 HV6446  NAD 27      -  38 27 37.60000(N)    076 11 42.46600(W) AD(       ) 1
 HV6446
 HV6446.Superseded values are not recommended for survey control.
 HV6446
 HV6446.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6446.See file dsdata.pdf to determine how the superseded data were derived.
 HV6446
 HV6446_MARKER: DS = TRIANGULATION STATION DISK
 HV6446_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6446_STAMPING: BROOKS 1942
 HV6446_MARK LOGO: CGS
 HV6446_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6446+STABILITY: SURFACE MOTION
 HV6446
 HV6446  HISTORY     - Date     Condition        Report By
 HV6446  HISTORY     - 1942     MONUMENTED       CGS
 HV6446
 HV6446                          STATION DESCRIPTION
 HV6446
 HV6446'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6446'THE STATION IS LOCATED ABOUT 3.5 MILES, AIR LINE, SW OF CHURCH
 HV6446'CREEK IN THE FARMYARD OF PROPERTY OWNED BY J.D. BROOKS.  IT IS
 HV6446'ABOUT 75 YARDS NE OF THE BROOKS RESIDENCE, 25 FEET NW OF THE NW
 HV6446'CORNER OF THE CATTLE BARN, AND 21 FEET S OF THE S FENCE OF A FIELD
 HV6446'WHICH IS ALSO THE N FENCE OF THE FARMYARD.  IT IS STAMPED BROOKS
 HV6446'1942 AND PROJECTS 6 INCHES.
 HV6446'
 HV6446'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 HV6446'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HV6446'
 HV6446'REFERENCE MARK NO.1 IS S OF THE STATION, IN THE N END OF THE E
 HV6446'FENCE LINE OF A LANE LEADING S, AND 16 FEET E OF THE SE CORNER
 HV6446'OF THE CORN CRIB.  IT IS STAMPED BROOKS NO.1 1942 AND PROJECTS
 HV6446'1 FOOT.
 HV6446'
 HV6446'REFERENCE MARK NO.2 IS W BY N OF THE STATION, 3 FEET S OF THE
 HV6446'N FENCE OF THE FARMYARD, AND 4 FEET E OF THE E SIDE OF THE TOOL
 HV6446'SHED.  IT IS STAMPED BROOKS NO.2 1942 AND PROJECTS 6 INCHES.
 HV6446'
 HV6446'THE AZIMUTH MARK IS 0.3 MILE N BY W OF THE STATION, 18 FEET E OF
 HV6446'THE CENTER OF THE ROAD LEADING TO THE BROOKS RESIDENCE, AND 20
 HV6446'FEET N OF A FENCE CORNER.  IT IS STAMPED BROOKS 1942, PROJECTS 8
 HV6446'INCHES, AND IS WITNESSED BY A 4-INCH SQUARE WHITE WOODEN POST
 HV6446'PROJECTING 2-1/2 FEET.
 HV6446'
 HV6446'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 16 AND
 HV6446'335 IN CHURCH CREEK GO WESTERLY ON HIGHWAY 16 FOR 1.9 MILES TO
 HV6446'A GRAVEL SIDE ROAD LEFT, OPPOSITE A CHURCH.  TURN LEFT AND FOLLOW
 HV6446'THE GRAVEL ROAD S FOR 3.3 MILES TO ITS END AT THE BROOKS RESIDENCE
 HV6446'AND THE STATION.
 HV6446'
 HV6446'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION CUSICK.
 HV6446'
 HV6446'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION CHURCH.
 HV6446'
 HV6446'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION MILLS.
 HV6446'
 HV6446'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION REFUGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5949 ***********************************************************************
 HV5949  DESIGNATION -  BROOKS 1901
 HV5949  PID         -  HV5949
 HV5949  STATE/COUNTY-  MD/DORCHESTER
 HV5949  COUNTRY     -  US
 HV5949  USGS QUAD   -  CHURCH CREEK (2016)
 HV5949
 HV5949                         *CURRENT SURVEY CONTROL
 HV5949  ______________________________________________________________________
 HV5949* NAD 83(1991) POSITION- 38 31 52.99580(N) 076 12 50.01395(W)   ADJUSTED
 HV5949* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5949  ______________________________________________________________________
 HV5949  GEOID HEIGHT    -        -34.796 (meters)                     GEOID18
 HV5949  LAPLACE CORR    -         -5.43  (seconds)                    DEFLEC18
 HV5949  HORZ ORDER      -  THIRD
 HV5949
 HV5949.The horizontal coordinates were established by classical geodetic methods
 HV5949.and adjusted by the National Geodetic Survey in January 1992.
 HV5949
 HV5949.The orthometric height was scaled from a topographic map.
 HV5949
 HV5949.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5949.GEOID18 height accuracy estimate available here.
 HV5949
 HV5949.Click photographs - Photos may exist for this station.
 HV5949
 HV5949.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5949
 HV5949. The following values were computed from the NAD 83(1991) position.
 HV5949
 HV5949;                    North         East     Units Scale Factor Converg.
 HV5949;SPC MD       -    96,282.568   468,541.486   MT  0.99996781   +0 29 36.2
 HV5949;SPC MD       -   315,887.06  1,537,206.53   sFT  0.99996781   +0 29 36.2
 HV5949;UTM  18      - 4,265,474.527   394,195.292   MT  0.99973786   -0 45 22.5
 HV5949
 HV5949!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5949!SPC MD       -   1.00000534  x   0.99996781  =   0.99997315
 HV5949!UTM  18      -   1.00000534  x   0.99973786  =   0.99974320
 HV5949
 HV5949:                Primary Azimuth Mark                     Grid Az
 HV5949:SPC MD       -  WEST FISHING CREEK 1901                  340 04 20.1
 HV5949:UTM  18      -  WEST FISHING CREEK 1901                  341 19 18.8
 HV5949
 HV5949_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9419565474(NAD 83)
 HV5949
 HV5949|---------------------------------------------------------------------|
 HV5949| PID    Reference Object                     Distance      Geod. Az  |
 HV5949|                                                           dddmmss.s |
 HV5949| HV5900 WEST FISHING CREEK 1901             APPROX. 0.9 KM 3403356.3 |
 HV5949|---------------------------------------------------------------------|
 HV5949
 HV5949                          SUPERSEDED SURVEY CONTROL
 HV5949
 HV5949  NAD 83(1986)-  38 31 52.99346(N)    076 12 50.02970(W) AD(       ) 3
 HV5949  NAD 27      -  38 31 52.58000(N)    076 12 51.23000(W) AD(       ) 3
 HV5949  USSD        -  38 31 52.97800(N)    076 12 51.00000(W) AD(       ) 3
 HV5949
 HV5949.Superseded values are not recommended for survey control.
 HV5949
 HV5949.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5949.See file dsdata.pdf to determine how the superseded data were derived.
 HV5949
 HV5949
 HV5949  HISTORY     - Date     Condition        Report By
 HV5949  HISTORY     - 1901     MONUMENTED       CGS
 HV5949  HISTORY     - 1903     GOOD             CGS
 HV5949  HISTORY     - 1941     MARK NOT FOUND   CGS
 HV5949
 HV5949                          STATION DESCRIPTION
 HV5949
 HV5949'DESCRIBED BY COAST AND GEODETIC SURVEY 1903
 HV5949'ON W SIDE OF FISHING CREEK, NEAR CENTER OF FIRST LARGE BEND
 HV5949'INSIDE OF ENTRANCE, ON A SMALL MARSHY POINT NEAR HIGH-WATER LINE.
 HV5949'MARKED BY A CEDAR STUB.  A BLAZED CEDAR STANDS 25 METERS (82 FEET)
 HV5949'W OF THE STATION.
 HV5949
 HV5949                          STATION RECOVERY (1941)
 HV5949
 HV5949'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HV5949'SEARCHED FOR, BUT NOT FOUND.
 HV5949'
 HV5949'RECOMMENDED THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5499 ***********************************************************************
 JV5499  DESIGNATION -  BROOKS HB 1915
 JV5499  PID         -  JV5499
 JV5499  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5499  COUNTRY     -  US
 JV5499  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5499
 JV5499                         *CURRENT SURVEY CONTROL
 JV5499  ______________________________________________________________________
 JV5499* NAD 83(1991) POSITION- 39 15 22.69453(N) 076 33 48.37423(W)   ADJUSTED
 JV5499* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5499  ______________________________________________________________________
 JV5499  GEOID HEIGHT    -        -32.897 (meters)                     GEOID18
 JV5499  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 JV5499  HORZ ORDER      -  THIRD
 JV5499
 JV5499.The horizontal coordinates were established by classical geodetic methods
 JV5499.and adjusted by the National Geodetic Survey in January 1992.
 JV5499
 JV5499.The orthometric height was scaled from a topographic map.
 JV5499
 JV5499.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5499.GEOID18 height accuracy estimate available here.
 JV5499
 JV5499.Click photographs - Photos may exist for this station.
 JV5499
 JV5499.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5499
 JV5499. The following values were computed from the NAD 83(1991) position.
 JV5499
 JV5499;                    North         East     Units Scale Factor Converg.
 JV5499;SPC MD       -   176,549.520   437,679.836   MT  0.99997185   +0 16 26.4
 JV5499;SPC MD       -   579,229.55  1,435,954.60   sFT  0.99997185   +0 16 26.4
 JV5499;UTM  18      - 4,346,384.318   365,105.631   MT  0.99982405   -0 59 22.1
 JV5499
 JV5499!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5499!SPC MD       -   1.00000504  x   0.99997185  =   0.99997689
 JV5499!UTM  18      -   1.00000504  x   0.99982405  =   0.99982909
 JV5499
 JV5499_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6510546384(NAD 83)
 JV5499
 JV5499                          SUPERSEDED SURVEY CONTROL
 JV5499
 JV5499  NAD 83(1986)-  39 15 22.69082(N)    076 33 48.38335(W) AD(       ) 3
 JV5499  NAD 27      -  39 15 22.30200(N)    076 33 49.50900(W) AD(       ) 3
 JV5499  USSD        -  39 15 22.67000(N)    076 33 49.34000(W) AD(       ) 3
 JV5499
 JV5499.Superseded values are not recommended for survey control.
 JV5499
 JV5499.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5499.See file dsdata.pdf to determine how the superseded data were derived.
 JV5499
 JV5499
 JV5499  HISTORY     - Date     Condition        Report By
 JV5499  HISTORY     - 1915     MONUMENTED       LOCENG
 JV5499
 JV5499                          STATION DESCRIPTION
 JV5499
 JV5499'DESCRIBED BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1915 (EWE)
 JV5499'ON THE NORTHERN SHORE OF PATAPSCO RIVER, ABOUT 1/2 MILE SE OF
 JV5499'LAZARETTO POINT.  IT IS 3.165 METERS (10.38 FEET) FROM STATION
 JV5499'CANTON (U.S.E.), S 32 DEG 14 MIN W.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5936 ***********************************************************************
 HV5936  DESIGNATION -  BROOKS MSFC 1910
 HV5936  PID         -  HV5936
 HV5936  STATE/COUNTY-  MD/DORCHESTER
 HV5936  COUNTRY     -  US
 HV5936  USGS QUAD   -  CHURCH CREEK (2016)
 HV5936
 HV5936                         *CURRENT SURVEY CONTROL
 HV5936  ______________________________________________________________________
 HV5936* NAD 83(1991) POSITION- 38 31 32.28519(N) 076 12 18.40057(W)   ADJUSTED
 HV5936* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5936  ______________________________________________________________________
 HV5936  GEOID HEIGHT    -        -34.829 (meters)                     GEOID18
 HV5936  LAPLACE CORR    -         -5.38  (seconds)                    DEFLEC18
 HV5936  HORZ ORDER      -  THIRD
 HV5936
 HV5936.The horizontal coordinates were established by classical geodetic methods
 HV5936.and adjusted by the National Geodetic Survey in January 1992.
 HV5936
 HV5936.The orthometric height was scaled from a topographic map.
 HV5936
 HV5936.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5936.GEOID18 height accuracy estimate available here.
 HV5936
 HV5936.Click photographs - Photos may exist for this station.
 HV5936
 HV5936.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5936
 HV5936. The following values were computed from the NAD 83(1991) position.
 HV5936
 HV5936;                    North         East     Units Scale Factor Converg.
 HV5936;SPC MD       -    95,650.628   469,312.695   MT  0.99996841   +0 29 56.0
 HV5936;SPC MD       -   313,813.77  1,539,736.73   sFT  0.99996841   +0 29 56.0
 HV5936;UTM  18      - 4,264,826.069   394,952.360   MT  0.99973589   -0 45 02.5
 HV5936
 HV5936!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5936!SPC MD       -   1.00000534  x   0.99996841  =   0.99997375
 HV5936!UTM  18      -   1.00000534  x   0.99973589  =   0.99974123
 HV5936
 HV5936:                Primary Azimuth Mark                     Grid Az
 HV5936:SPC MD       -  DOCTOR MSFC 1910                         001 58 12.1
 HV5936:UTM  18      -  DOCTOR MSFC 1910                         003 13 10.6
 HV5936
 HV5936_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9495264826(NAD 83)
 HV5936
 HV5936|---------------------------------------------------------------------|
 HV5936| PID    Reference Object                     Distance      Geod. Az  |
 HV5936|                                                           dddmmss.s |
 HV5936| HV5933 DOCTOR MSFC 1910                    APPROX. 0.5 KM 0022808.1 |
 HV5936|---------------------------------------------------------------------|
 HV5936
 HV5936                          SUPERSEDED SURVEY CONTROL
 HV5936
 HV5936  NAD 83(1986)-  38 31 32.28288(N)    076 12 18.41620(W) AD(       ) 3
 HV5936  NAD 27      -  38 31 31.87400(N)    076 12 19.60100(W) AD(       ) 3
 HV5936  USSD        -  38 31 32.25600(N)    076 12 19.27600(W) AD(       ) 3
 HV5936
 HV5936.Superseded values are not recommended for survey control.
 HV5936
 HV5936.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5936.See file dsdata.pdf to determine how the superseded data were derived.
 HV5936
 HV5936_MARKER: Z = SEE DESCRIPTION
 HV5936_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5936_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5936+STABILITY: SURFACE MOTION
 HV5936
 HV5936  HISTORY     - Date     Condition        Report By
 HV5936  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5936  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV5936
 HV5936                          STATION DESCRIPTION
 HV5936
 HV5936'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5936'ON THE SOUTHWESTERN SHORE OF FISHING CREEK, NEAR BROOKS SHIPYARD
 HV5936'AND ABOUT 1/2 MILE SW OF WINDMILL POINT, ON MARSH, ABOUT 8 YARDS
 HV5936'S OF SHORE, 11 YARDS SE OF SHORE, 15 YARDS NE OF SHORE, AND 50
 HV5936'YARDS N BY W OF NE END OF LARGE WORKSHOP.  STATION IS MARKED BY A
 HV5936'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5936'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV5936'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5936'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE
 HV5936'CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES
 HV5936'BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV5936'POINTS OF REFERENCE ARE AS FOLLOWS--CUPOLA ON WORKSHOP, 45 YARDS,
 HV5936'S 4 DEG 39 MIN W.  CHIMNEY ON NEAR END OF HOUSE, 1/8 MILE, N 29
 HV5936'DEG 32 MIN W.  NEAR PEAK OF BARN, 3/4 MILE, N 29 DEG 2 MIN E.
 HV5936'CUPOLA ON CENTER OF LARGE BARN, 1 MILE, N 68 DEG 57 MIN E.  LEFT
 HV5936'CHIMNEY OF LARGE HOUSE, 1 MILE, N 71 DEG 3 MIN E. NEAR PEAK OF
 HV5936'HOUSE, 2 MILES, N 80 DEG 6 MIN E.  LIGHTNING ROD ON NEAR END OF
 HV5936'HOUSE, 1 MILE, N 89 DEG 38 MIN E.  CHIMNEY ON NEAR END OF HOUSE,
 HV5936'100 YARDS, S 74 DEG 1 MIN E.  WEATHER VANE ON BARN CUPOLA, 75
 HV5936'YARDS, S 50 DEG 12 MIN E.
 HV5936
 HV5936                          STATION RECOVERY (1942)
 HV5936
 HV5936'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV5936'THIS STATION WAS SEARCHED FOR THOROUGHLY, BUT NO TRACE OF IT
 HV5936'COULD BE FOUND.  ACCORDING TO INFORMATION RECEIVED FROM MR.
 HV5936'BROOKS, THIS STATION WAS WASHED AWAY SEVERAL YEARS AGO.  IT IS
 HV5936'RECOMMENDED THAT THIS STATION BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5410 ***********************************************************************
 JV5410  DESIGNATION -  BRORING
 JV5410  PID         -  JV5410
 JV5410  STATE/COUNTY-  MD/BALTIMORE
 JV5410  COUNTRY     -  US
 JV5410  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5410
 JV5410                         *CURRENT SURVEY CONTROL
 JV5410  ______________________________________________________________________
 JV5410* NAD 83(1991) POSITION- 39 17 07.50431(N) 076 22 57.00479(W)   ADJUSTED
 JV5410* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 JV5410  ______________________________________________________________________
 JV5410  GEOID HEIGHT    -        -33.073 (meters)                     GEOID18
 JV5410  LAPLACE CORR    -         -2.02  (seconds)                    DEFLEC18
 JV5410  HORZ ORDER      -  FIRST
 JV5410
 JV5410.The horizontal coordinates were established by classical geodetic methods
 JV5410.and adjusted by the National Geodetic Survey in January 1992.
 JV5410
 JV5410.The orthometric height was scaled from a topographic map.
 JV5410
 JV5410.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5410.GEOID18 height accuracy estimate available here.
 JV5410
 JV5410.Click photographs - Photos may exist for this station.
 JV5410
 JV5410.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5410
 JV5410. The following values were computed from the NAD 83(1991) position.
 JV5410
 JV5410;                    North         East     Units Scale Factor Converg.
 JV5410;SPC MD       -   179,871.755   453,274.398   MT  0.99997535   +0 23 15.2
 JV5410;SPC MD       -   590,129.25  1,487,117.75   sFT  0.99997535   +0 23 15.2
 JV5410;UTM  18      - 4,349,361.420   380,766.912   MT  0.99977504   -0 52 31.7
 JV5410
 JV5410!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5410!SPC MD       -   1.00000460  x   0.99997535  =   0.99997995
 JV5410!UTM  18      -   1.00000460  x   0.99977504  =   0.99977964
 JV5410
 JV5410:                Primary Azimuth Mark                     Grid Az
 JV5410:SPC MD       -  AIRWAY BEACON 60                         342 28 08.2
 JV5410:UTM  18      -  AIRWAY BEACON 60                         343 43 55.1
 JV5410
 JV5410_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8076649361(NAD 83)
 JV5410
 JV5410|---------------------------------------------------------------------|
 JV5410| PID    Reference Object                     Distance      Geod. Az  |
 JV5410|                                                           dddmmss.s |
 JV5410| JV5306 AIRWAY BEACON 61 A                  APPROX.14.1 KM 0330333.7 |
 JV5410| JV5418 BRORING RM 1                         23.410 METERS 11839     |
 JV5410| JV5252 CRAIGHILL CHAN REAR RNG LT          APPROX. 6.3 KM 1892003.7 |
 JV5410| CB1024 BRORING RM 2                                       1963749.6 |
 JV5410| CB1025 BRORING RM 3                         28.941 METERS 24705     |
 JV5410| JV5383 AIRWAY BEACON 60                    APPROX. 4.7 KM 3425123.4 |
 JV5410|---------------------------------------------------------------------|
 JV5410
 JV5410                          SUPERSEDED SURVEY CONTROL
 JV5410
 JV5410  NAD 83(1986)-  39 17 07.49916(N)    076 22 57.01290(W) AD(       ) 1
 JV5410  NAD 27      -  39 17 07.11000(N)    076 22 58.15700(W) AD(       ) 1
 JV5410
 JV5410.Superseded values are not recommended for survey control.
 JV5410
 JV5410.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5410.See file dsdata.pdf to determine how the superseded data were derived.
 JV5410
 JV5410_MARKER: DS = TRIANGULATION STATION DISK
 JV5410_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5410_STAMPING: BRORING 1933
 JV5410_MARK LOGO: CGS
 JV5410_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5410+STABILITY: SURFACE MOTION
 JV5410
 JV5410  HISTORY     - Date     Condition        Report By
 JV5410  HISTORY     - 1933     MONUMENTED       CGS
 JV5410  HISTORY     - 1939     GOOD             CGS
 JV5410  HISTORY     - 1956     GOOD             CGS
 JV5410  HISTORY     - 1972     MARK NOT FOUND   NGS
 JV5410  HISTORY     - 1983     SEE DESCRIPTION  LOCENG
 JV5410
 JV5410                          STATION DESCRIPTION
 JV5410
 JV5410'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5410'STATION IS ON THE EASTERLY END OF BACK RIVER NECK BETWEEN MIDDLE
 JV5410'RIVER AND HAWK COVE, ON THE POINT CALLED BRORINGS POINT (FORMERLY
 JV5410'BOOBY BAR).  IT IS ON THE PROPERTY OF MR. CHARLES BRORING, 86 FEET
 JV5410'ESE OF THE SE CORNER OF HIS HOUSE, 24.5 FEET N OF A WIRE FENCE, 89
 JV5410'FEET W OF A CONCRETE SEA WALL, 55 FEET NW OF THE NW CORNER OF A
 JV5410'BUNGALOW, AND 47 FEET ENE OF AN ELECTRIC WIRE POLE.
 JV5410'
 JV5410'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5410'DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1B, 7A, AND 11B.
 JV5410'
 JV5410'REFERENCE MARK NO.1 IS IN THE WIRE FENCE LINE, 15 FEET N OF THE N
 JV5410'SIDE OF A COTTAGE, AND 41 FEET SW OF THE SEA WALL.
 JV5410'
 JV5410'REFERENCE MARK NO.2, THE AZIMUTH MARK, IS ACROSS A CREEK FROM THE
 JV5410'STATION, 26 YARDS E OF THE MOST NORTHERLY COTTAGE ON THE POINT, 5
 JV5410'YARDS S OF THE HIGH-WATER MARK, AND 2 YARDS W OF A 14-INCH WATER
 JV5410'OAK.  IT IS VISIBLE FROM THE GROUND AT THE STATION.
 JV5410'
 JV5410'REFERENCE MARK NO.3 IS 1 YARD WNW OF THE NE CORNER OF THE BOAT
 JV5410'SHED, 2 YARDS SW OF THE CENTER LINE OF THE DRIVE, AND ABOUT 7
 JV5410'YARDS SW OF SIGN DANGER, GO SLOW.
 JV5410'
 JV5410'TO REACH FROM JOSENHANS, A SMALL PLACE ABOUT 10 MILES FROM
 JV5410'BALTIMORE ON EASTERN AVENUE, GO 2.9 MILES ALONG RIVER NECK ROAD TO
 JV5410'HOLLY NECK ROAD.  TURN LEFT AND FOLLOW HOLLY NECK ROAD 2.4 MILES,
 JV5410'AND TURN LEFT FOR 0.6 MILE TO WHERE IT CURVES RIGHT AROUND A BOAT
 JV5410'SHED S OF BRORINGS HOUSE.
 JV5410'
 JV5410'HEIGHT OF LIGHT ABOVE STATION MARK 22 METERS.
 JV5410
 JV5410                          STATION RECOVERY (1939)
 JV5410
 JV5410'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5410'STATION MARK AND REFERENCE MARKS RECOVERED.  THE STATION IS
 JV5410'LOCATED ON THE NORTHEASTERLY END OF BAY RIVER NECK ON A POINT
 JV5410'CALLED BRORINGS POINT (FORMERLY BOOBY BAR) BETWEEN MIDDLE RIVER
 JV5410'AND HAWK COVE.  IT IS ON PROPERTY OF MR. CHAS. BRORING.
 JV5410'
 JV5410'THE STATION MARK IS UNDER THE W END OF A GRAY-SHINGLED COTTAGE,
 JV5410'FLUSH WITH THE SURFACE OF THE GROUND 3.5 FEET E OF THE W SIDE OF
 JV5410'COTTAGE, 11.4 FEET S OF N SIDE OF COTTAGE.  THE COTTAGE IS THE
 JV5410'NORTHEASTERLY OF A GROUP, WAS BUILT IN 1938, AND IS ON CONCRETE
 JV5410'PIERS PROJECTING ABOUT 2 FEET ABOVE GROUND.  MARK IS 47 FEET ENE
 JV5410'OF ELECTRIC WIRE POLE.
 JV5410'
 JV5410'REFERENCE MARK NO.1 IS IN A ROW OF SMALL BUSHES, 31 FEET ESE OF
 JV5410'THE SE CORNER OF GRAY-SHINGLED COTTAGE, 30.4 FEET SE OF A 10-INCH
 JV5410'APPLE TREE, 43 FEET SW OF CONCRETE SEA WALL, AND 14.8 FEET N OF N
 JV5410'SIDE OF BROWN-SHINGLED COTTAGE.  MARK PROJECTS 6 INCHES ABOVE GROUND.
 JV5410'
 JV5410'REFERENCE MARK NO.2, AZIMUTH MARK, IS SSE OF THE STATION ABOUT 300
 JV5410'YARDS DISTANT, ACROSS A CREEK AND 26 YARDS E OF THE MOST NORTHERLY
 JV5410'COTTAGE ON POINT, 2 YARDS W OF A 14-INCH OAK.  THE AZIMUTH MARK IS
 JV5410'NOT VISIBLE FROM REFERENCE MARK NO.1.
 JV5410'
 JV5410'REFERENCE MARK NO.3 IS 1 YARD WNW OF THE NE CORNER OF MR. BRORINGS
 JV5410'BOAT SHED, 2 YARDS S OF CENTER LINE OF DRIVE.
 JV5410'
 JV5410'THE INTERFERENCE OF THE NEW COTTAGE PREVENTED OCCUPYING THE
 JV5410'STATION MARK.  THE GEOGRAPHIC POSITION OF REFERENCE MARK NO.1 WAS
 JV5410'COMPUTED AND ALL OBSERVATIONS WERE MADE FROM REFERENCE MARK NO.1.
 JV5410
 JV5410                          STATION RECOVERY (1956)
 JV5410
 JV5410'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (EHK)
 JV5410'THE STATION MARK WAS SEEN BENEATH THE COTTAGE.
 JV5410'
 JV5410'REFERENCE MARKS 1 AND 3 WERE RECOVERED IN GOOD CONDITION.  THE
 JV5410'DISTANCE BETWEEN THESE REFERENCE MARKS WAS MEASURED WITH A STEEL
 JV5410'TAPE AND FOUND TO BE CORRECT.
 JV5410'
 JV5410'REFERENCE MARK 2 WAS NOT FOUND.  THE 14-IN. OAK TREE HAS BEEN
 JV5410'UPROOTED, AND IT IS BELIEVED THAT REFERENCE MARK 2 IS BENEATH THE
 JV5410'DEBRIS.
 JV5410'
 JV5410'THE 1939 RECOVERY NOTE IS ADEQUATE AND CORRECT WITH THE FOLLOWING
 JV5410'EXCEPTIONS--
 JV5410'
 JV5410'THE GRAY-SHINGLED COTTAGE IS NOW THE PROPERTY OF MRS. CATHERINE
 JV5410'BENICK.
 JV5410'
 JV5410'REFERENCE MARK 1 IS IN A SMALL BUSH, WHICH IS THE ONLY BUSH NOT
 JV5410'CUT DOWN FROM A ROW.
 JV5410'
 JV5410'THE BROWN-SHINGLED COTTAGE HAS BEEN REPAINTED GREEN.
 JV5410'
 JV5410'MR. BRORINGS BOAT SHED HAS BEEN REMOVED.  REFERENCE MARK 3 IS NOW
 JV5410'2 FT. S OF THE S EDGE OF AN ASPHALT ROAD.
 JV5410'
 JV5410'TO REACH FROM JOSENHANS, ABOUT 10 MI. FROM BALTIMORE ON EASTERN
 JV5410'AVENUE, GO 2.9 MI. ALONG RIVER NECK ROAD TO HOLLY NECK ROAD.  TURN
 JV5410'LEFT AND FOLLOW HOLLY NECK ROAD FOR 2.4 MI., TURN LEFT ON
 JV5410'HENRIETTA AVENUE FOR 0.4 MI. TO HOLLY BEACH AVENUE ROAD, THEN
 JV5410'RIGHT TO THE END OF THE ROAD AND STATION.
 JV5410
 JV5410                          STATION RECOVERY (1972)
 JV5410
 JV5410'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (EH)
 JV5410'THE STATION IS REPORTED TO BE UNDER A COTTAGE AND WAS NOT SEARCHED
 JV5410'FOR.  RM1 WAS FOUND UP-ROOTED AND LYING NEAR THE COTTAGE.  RM2 WAS
 JV5410'REPORTED DESTROYED, WAS SEARCHED FOR, AND NOT FOUND.  RM3 WAS
 JV5410'RECOVERED IN GOOD CONDITION AND THE ARROW ON THE DISC POINTS TO
 JV5410'THE COTTAGE OVER THE STATION.
 JV5410'
 JV5410'TO REACH THE STATION FROM WALTERS, MD., GO SOUTH ON BACK RIVER
 JV5410'NECK ROAD FOR 2.9 MILES AND TURN LEFT ONTO HOLLY NECK ROAD.  GO
 JV5410'2.4 MILES AND TURN LEFT ONTO HENRIETTA AVENUE.  GO 0.2 MILES AND
 JV5410'TURN RIGHT ONTO HOLLY BEACH AVENUE.  GO 0.3 MILES TO RM3, WHICH IS
 JV5410'2 FEET TO THE RIGHT, JUST BEFORE THE ROAD TURNS 90 DEGREES TO THE
 JV5410'RIGHT.
 JV5410
 JV5410                          STATION RECOVERY (1983)
 JV5410
 JV5410'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (AHH)
 JV5410'BRORING 1933 NOT ACCESSIBLE-DESTROYED.
 JV5410'
 JV5410'DIRECTIONS ARE VERY ADEQUATE.  THE STATION IS UNDER THE COTTAGE
 JV5410'NOW OWNED BY MRS. PLUM.  THERE IS ENOUGH CRAWL SPACE UNDER THE
 JV5410'COTTAGE TO REACH THE STATION, BUT IT WOULD NOT BE ACCESSIBLE TO
 JV5410'SURVEYOR. STATION WAS SEEN BY RECOVERER.  RM 1 WAS UP-ROOTED BY A
 JV5410'TREE DURING HURRICANE AGNES AND IS LAYING ON ITS SIDE AND BURIED
 JV5410'2/3 INTO THE GROUND.  THE 1/3 ABOVE THE GROUND MAKES IT DIFFICULT
 JV5410'TO CUT THE GRASS AND MRS. PLUM WOULD LIKE TO HAVE IT REMOVED.  NO
 JV5410'SIGN OF RM 2.  RM 3 IS IN GOOD CONDITION, BUT NOW ONLY 1 FOOT FROM
 JV5410'PAVED ROAD DUE TO RESURFACING OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5071 ***********************************************************************
 JV5071  DESIGNATION -  BROWN
 JV5071  PID         -  JV5071
 JV5071  STATE/COUNTY-  MD/KENT
 JV5071  COUNTRY     -  US
 JV5071  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5071
 JV5071                         *CURRENT SURVEY CONTROL
 JV5071  ______________________________________________________________________
 JV5071* NAD 83(1991) POSITION- 39 00 35.71018(N) 076 12 57.78795(W)   ADJUSTED
 JV5071* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5071  ______________________________________________________________________
 JV5071  GEOID HEIGHT    -        -33.659 (meters)                     GEOID18
 JV5071  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 JV5071  HORZ ORDER      -  SECOND
 JV5071
 JV5071.The horizontal coordinates were established by classical geodetic methods
 JV5071.and adjusted by the National Geodetic Survey in January 1992.
 JV5071
 JV5071.The orthometric height was scaled from a topographic map.
 JV5071
 JV5071.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5071.GEOID18 height accuracy estimate available here.
 JV5071
 JV5071.Click photographs - Photos may exist for this station.
 JV5071
 JV5071.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5071
 JV5071. The following values were computed from the NAD 83(1991) position.
 JV5071
 JV5071;                    North         East     Units Scale Factor Converg.
 JV5071;SPC MD       -   149,398.912   467,897.040   MT  0.99995258   +0 29 31.3
 JV5071;SPC MD       -   490,152.93  1,535,092.21   sFT  0.99995258   +0 29 31.3
 JV5071;UTM  18      - 4,318,580.717   394,712.952   MT  0.99973650   -0 45 55.9
 JV5071
 JV5071!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5071!SPC MD       -   1.00000516  x   0.99995258  =   0.99995774
 JV5071!UTM  18      -   1.00000516  x   0.99973650  =   0.99974166
 JV5071
 JV5071:                Primary Azimuth Mark                     Grid Az
 JV5071:SPC MD       -  QUEENSTOWN CREEK OUTER BCN LT            103 16 54.9
 JV5071:UTM  18      -  QUEENSTOWN CREEK OUTER BCN LT            104 32 22.1
 JV5071
 JV5071_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9471218580(NAD 83)
 JV5071
 JV5071|---------------------------------------------------------------------|
 JV5071| PID    Reference Object                     Distance      Geod. Az  |
 JV5071|                                                           dddmmss.s |
 JV5071| CB1028 BROWN RM 2                           25.480 METERS 05514     |
 JV5071| CB1027 BROWN RM 1                           12.370 METERS 05521     |
 JV5071| JV5068 CEDAR PT GUN CLUB LARGE CHIM        422.805 METERS 0904531.1 |
 JV5071| JV5057 QUEENSTOWN CREEK OUTER BCN LT       APPROX. 4.3 KM 1034626.2 |
 JV5071| HV5791 QUEENSTOWN WATER TANK               APPROX. 5.6 KM 1125655.6 |
 JV5071| HV5750 OLD HOUSE SEAWARD GABLE             APPROX. 4.0 KM 1434601.2 |
 JV5071| HV5792 OLD BARN CUPOLA                     APPROX. 4.3 KM 1701049.6 |
 JV5071| HV6154 SIG                                 APPROX. 5.2 KM 2244831.7 |
 JV5071| CB1026 BROWN RM                             51.500 METERS 24020     |
 JV5071| HV6197 END                                 APPROX. 6.3 KM 2533331.2 |
 JV5071| HV6164 RED BARN SOUTH VENTILATOR           APPROX. 6.8 KM 2571910.4 |
 JV5071| JV5165 LOVE PT FERRY WHSE EAST GABLE       APPROX. 7.6 KM 2882033.2 |
 JV5071|---------------------------------------------------------------------|
 JV5071
 JV5071                          SUPERSEDED SURVEY CONTROL
 JV5071
 JV5071  NAD 83(1986)-  39 00 35.70513(N)    076 12 57.80000(W) AD(       ) 2
 JV5071  NAD 27      -  39 00 35.30300(N)    076 12 58.96700(W) AD(       ) 2
 JV5071
 JV5071.Superseded values are not recommended for survey control.
 JV5071
 JV5071.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5071.See file dsdata.pdf to determine how the superseded data were derived.
 JV5071
 JV5071_MARKER: DS = TRIANGULATION STATION DISK
 JV5071_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV5071_STAMPING: BROWN 1932
 JV5071_MARK LOGO: CGS
 JV5071_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5071
 JV5071  HISTORY     - Date     Condition        Report By
 JV5071  HISTORY     - 1932     MONUMENTED       CGS
 JV5071  HISTORY     - 1938     GOOD             CGS
 JV5071  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5071
 JV5071                          STATION DESCRIPTION
 JV5071
 JV5071'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (JAB)
 JV5071'STATION IS ON THE EASTERN SHORE OF CHESAPEAKE BAY, AT THE N SIDE
 JV5071'OF MOUTH OF CHESTER RIVER, ON THE SW END OF EASTERN NECK ISLAND,
 JV5071'3/8 MILE WNW OF CEDAR POINT, ON A LOW MARSHY POINT COVERED WITH
 JV5071'A THICK GROWTH OF HIGH BUSHES, 1 FOOT ABOVE HIGH WATER, 30 YARDS
 JV5071'E OF SHORE, 30 YARDS NW OF SHORE, AND 50 YARDS FROM EXTREME END
 JV5071'OF POINT.
 JV5071'
 JV5071'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5071'CONCRETE, IN THE TOP OF A TILE.
 JV5071'
 JV5071'REFERENCE MARKS ARE IN RANGE WITH BRIDGE TENDERS HOUSE OF KENT
 JV5071'ISLAND NARROWS HIGHWAY BRIDGE.
 JV5071'
 JV5071'HIGH-WATER LINE 26 METERS S ON RANGE WITH STATION GRAY.
 JV5071'
 JV5071'HIGH-WATER LINE 31 METERS W ON RANGE WITH STATION GOLF.
 JV5071'
 JV5071'HIGH-WATER LINE AT POINT 56 METERS ON RANGE WITH STATION GREEN.
 JV5071'
 JV5071'HEIGHT OF SIGNAL ABOVE STATION MARK - 5 METERS.
 JV5071
 JV5071                          STATION RECOVERY (1938)
 JV5071
 JV5071'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5071'STATION AND REFERENCE MARKS RECOVERED IN GOOD ORDER.  STATION IS
 JV5071'LOCATED ON NARROWS POINT ABOUT 1/2 MILE NW OF CEDAR POINT AT
 JV5071'EXTREME END OF EASTERN NECK ISLAND.  STATION IS MIDWAY OF POINT
 JV5071'IN MARSH LAND IN HIGH MARSH GRASS AND 83-1/2 METERS N OF END OF
 JV5071'DUCK BLIND BUILT OUT ON THE END OF NARROWS POINT.
 JV5071'
 JV5071'STATION AND REFERENCE MARKS ARE 10-INCH TILES FILLED WITH
 JV5071'CONCRETE AND SET IN MARSH, PROJECTING ABOUT 4 INCHES ABOVE
 JV5071'SURFACE.  REFERENCE MARKS ARE IN LINE WITH STATION AND BEAR NE.
 JV5071'
 JV5071'STATION IS REACHED FROM ROCK HALL BY TAKING EASTERN NECK ROAD, GO
 JV5071'9-1/2 MILES TO EXTREME END OF ROAD WHICH IS AT THE CEDAR POINT
 JV5071'HUNTING CLUB.  AT CLUB WHARF TAKE SKIFF TO NARROWS POINT AND
 JV5071'THE STATION.  PROPERTY IS OWNED BY THE CEDAR POINT HUNTING CLUB
 JV5071'AND PERMISSION SHOULD BE OBTAINED IN ADVANCE TO BUILD OVER THE
 JV5071'STATION.
 JV5071
 JV5071                          STATION RECOVERY (1961)
 JV5071
 JV5071'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5071'STATION MARK AND THE REFERENCE MARKS COULD NOT BE FOUND AFTER A
 JV5071'CAREFUL SEARCH OF THE AREA.  THE POINT IS COVERED BY HIGH MARSH
 JV5071'AND DEBRIS.  IF THE STATION IS STILL INTACT IT WILL PROBABLY BE
 JV5071'NECESSARY TO BURN OFF THE POINT IN ORDER TO LOCATE THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4677 ***********************************************************************
 AB4677  DESIGNATION -  BROWN
 AB4677  PID         -  AB4677
 AB4677  STATE/COUNTY-  MD/CARROLL
 AB4677  COUNTRY     -  US
 AB4677  USGS QUAD   -  TANEYTOWN (2016)
 AB4677
 AB4677                         *CURRENT SURVEY CONTROL
 AB4677  ______________________________________________________________________
 AB4677* NAD 83(2011) POSITION- 39 40 42.18907(N) 077 09 17.89130(W)   ADJUSTED
 AB4677* NAD 83(2011) ELLIP HT-   110.528 (meters)        (06/27/12)   ADJUSTED
 AB4677* NAD 83(2011) EPOCH   -  2010.00
 AB4677* NAVD 88 ORTHO HEIGHT -   143.5   (meters)      471.    (feet) GPS OBS
 AB4677  ______________________________________________________________________
 AB4677  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4677  GEOID HEIGHT    -        -32.975 (meters)                     GEOID99
 AB4677  GEOID HEIGHT    -        -32.983 (meters)                     GEOID18
 AB4677  NAD 83(2011) X  -  1,092,826.148 (meters)                     COMP
 AB4677  NAD 83(2011) Y  - -4,792,654.323 (meters)                     COMP
 AB4677  NAD 83(2011) Z  -  4,050,636.942 (meters)                     COMP
 AB4677  LAPLACE CORR    -          4.72  (seconds)                    DEFLEC18
 AB4677
 AB4677  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4677  Standards:
 AB4677         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4677            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4677  -------------------------------------------------------------------
 AB4677  NETWORK    0.80   2.08           0.33   0.32   1.06      0.02351771
 AB4677  -------------------------------------------------------------------
 AB4677  Click here for local accuracies and other accuracy information.
 AB4677
 AB4677.The horizontal coordinates were established by GPS observations
 AB4677.and adjusted by the National Geodetic Survey in June 2012.
 AB4677
 AB4677.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4677.been affixed to the stable North American tectonic plate. See 
 AB4677.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4677
 AB4677.The horizontal coordinates are valid at the epoch date displayed above
 AB4677.which is a decimal equivalence of Year/Month/Day.
 AB4677
 AB4677.The orthometric height was determined by GPS observations and a
 AB4677.high-resolution geoid model.
 AB4677
 AB4677.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4677.GEOID18 height accuracy estimate available here.
 AB4677
 AB4677.Click photographs - Photos may exist for this station.
 AB4677
 AB4677.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4677
 AB4677.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4677
 AB4677.The ellipsoidal height was determined by GPS observations
 AB4677.and is referenced to NAD 83.
 AB4677
 AB4677. The following values were computed from the NAD 83(2011) position.
 AB4677
 AB4677;                    North         East     Units Scale Factor Converg.
 AB4677;SPC MD       -   223,332.346   386,704.024   MT  1.00004794   -0 05 50.2
 AB4677;SPC MD       -   732,716.21  1,268,711.45   sFT  1.00004794   -0 05 50.2
 AB4677;UTM  18      - 4,394,281.844   315,184.207   MT  1.00002054   -1 22 34.6
 AB4677
 AB4677!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4677!SPC MD       -   0.99998266  x   1.00004794  =   1.00003060
 AB4677!UTM  18      -   0.99998266  x   1.00002054  =   1.00000320
 AB4677
 AB4677_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1518494281(NAD 83)
 AB4677
 AB4677                          SUPERSEDED SURVEY CONTROL
 AB4677
 AB4677  NAD 83(2007)-  39 40 42.18911(N)    077 09 17.89240(W) AD(2002.00) 0
 AB4677  ELLIP H (02/10/07)  110.536  (m)                       GP(2002.00)    
 AB4677  ELLIP H (08/30/02)  110.565  (m)                       GP(       ) 4 2
 AB4677  NAD 83(1991)-  39 40 42.18876(N)    077 09 17.89199(W) AD(       ) 1
 AB4677  ELLIP H (07/03/96)  110.525  (m)                       GP(       ) 1 1
 AB4677  NAVD 88 (07/03/96)  143.5    (m)  GEOID93  model used  GPS OBS        
 AB4677
 AB4677.Superseded values are not recommended for survey control.
 AB4677
 AB4677.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4677.See file dsdata.pdf to determine how the superseded data were derived.
 AB4677
 AB4677_MARKER: DD = SURVEY DISK
 AB4677_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4677_STAMPING: BROWN 1995
 AB4677_MARK LOGO: MD-013
 AB4677_PROJECTION: RECESSED 9 CENTIMETERS
 AB4677_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4677_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4677+STABILITY: SURFACE MOTION
 AB4677_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4677+SATELLITE: SATELLITE OBSERVATIONS - December 05, 2016
 AB4677
 AB4677  HISTORY     - Date     Condition        Report By
 AB4677  HISTORY     - 1995     MONUMENTED       MD-013
 AB4677  HISTORY     - 20080901 GOOD             GEOCAC
 AB4677  HISTORY     - 20161205 GOOD             BASE9
 AB4677
 AB4677                          STATION DESCRIPTION
 AB4677
 AB4677'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4677'STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) NORTHEAST OF TANEYTOWN. TO
 AB4677'REACH STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE)
 AB4677'AND MD ROUTE 194 (FRANCIS SCOTT KEY HIGHWAY) AT TANEYTOWN GO NORTH ON
 AB4677'MD ROUTE 194 FOR 1.7 MI (2.7 KM) TO THE STATION ON THE LEFT. STATION
 AB4677'IS ALSO 338 FT (103.0 M) SOUTH OF THE INTERSECTION OF MD ROUTE 194 AND
 AB4677'BROWN ROAD. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AB4677'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 27.3 FT (8.3 M)
 AB4677'WEST OF THE CENTERLINE OF THE ROAD, 164 FT (50.0 M) NORTH OF TELEPHONE
 AB4677'POLE NO. 47.5 AND 113 FT (34.4 M) SOUTH OF TELEPHONE POLE NO.48.
 AB4677
 AB4677                          STATION RECOVERY (2008)
 AB4677
 AB4677'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 AB4677'RECOVERED IN GOOD CONDITION.
 AB4677
 AB4677                          STATION RECOVERY (2016)
 AB4677
 AB4677'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 AB4677'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5030 ***********************************************************************
 JV5030  DESIGNATION -  BROWN LOWER CHESTER RIVER
 JV5030  PID         -  JV5030
 JV5030  STATE/COUNTY-  MD/KENT
 JV5030  COUNTRY     -  US
 JV5030  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5030
 JV5030                         *CURRENT SURVEY CONTROL
 JV5030  ______________________________________________________________________
 JV5030* NAD 83(1991) POSITION- 39 06 19.94428(N) 076 08 42.98742(W)   ADJUSTED
 JV5030* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 JV5030  ______________________________________________________________________
 JV5030  GEOID HEIGHT    -        -33.518 (meters)                     GEOID18
 JV5030  LAPLACE CORR    -         -2.31  (seconds)                    DEFLEC18
 JV5030  HORZ ORDER      -  SECOND
 JV5030
 JV5030.The horizontal coordinates were established by classical geodetic methods
 JV5030.and adjusted by the National Geodetic Survey in January 1992.
 JV5030
 JV5030.The orthometric height was scaled from a topographic map.
 JV5030
 JV5030.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5030.GEOID18 height accuracy estimate available here.
 JV5030
 JV5030.Click photographs - Photos may exist for this station.
 JV5030
 JV5030.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5030
 JV5030. The following values were computed from the NAD 83(1991) position.
 JV5030
 JV5030;                    North         East     Units Scale Factor Converg.
 JV5030;SPC MD       -   160,068.457   473,927.498   MT  0.99995786   +0 32 11.2
 JV5030;SPC MD       -   525,157.93  1,554,877.13   sFT  0.99995786   +0 32 11.2
 JV5030;UTM  18      - 4,329,112.884   400,974.826   MT  0.99972074   -0 43 20.8
 JV5030
 JV5030!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5030!SPC MD       -   1.00000451  x   0.99995786  =   0.99996237
 JV5030!UTM  18      -   1.00000451  x   0.99972074  =   0.99972525
 JV5030
 JV5030:                Primary Azimuth Mark                     Grid Az
 JV5030:SPC MD       -  SPANIARD PT 2 UPPER                      177 23 23.3
 JV5030:UTM  18      -  SPANIARD PT 2 UPPER                      178 38 55.3
 JV5030
 JV5030_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0097429112(NAD 83)
 JV5030
 JV5030|---------------------------------------------------------------------|
 JV5030| PID    Reference Object                     Distance      Geod. Az  |
 JV5030|                                                           dddmmss.s |
 JV5030| JV5032 SPANIARD PT 2 UPPER                 APPROX. 1.3 KM 1775534.5 |
 JV5030|---------------------------------------------------------------------|
 JV5030
 JV5030                          SUPERSEDED SURVEY CONTROL
 JV5030
 JV5030  NAD 83(1986)-  39 06 19.93866(N)    076 08 42.99927(W) AD(       ) 2
 JV5030  NAD 27      -  39 06 19.54200(N)    076 08 44.17300(W) AD(       ) 2
 JV5030  USSD        -  39 06 19.93800(N)    076 08 43.98600(W) AD(       ) 3
 JV5030
 JV5030.Superseded values are not recommended for survey control.
 JV5030
 JV5030.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5030.See file dsdata.pdf to determine how the superseded data were derived.
 JV5030
 JV5030_MARKER: H = DRILL HOLE
 JV5030_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5030_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5030+STABILITY: SURFACE MOTION
 JV5030
 JV5030  HISTORY     - Date     Condition        Report By
 JV5030  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5030  HISTORY     - 1938     GOOD             CGS
 JV5030  HISTORY     - 1940     GOOD             CGS
 JV5030  HISTORY     - 1961     GOOD             CGS
 JV5030  HISTORY     - 1962     GOOD             CGS
 JV5030
 JV5030                          STATION DESCRIPTION
 JV5030
 JV5030'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5030'STATION IS ON THE NORTHWESTERN SHORE OF CHESTER RIVER, ON CLIFFS
 JV5030'POINT, BETWEEN CLIFFS BIGHT AND COMMEGYS BIGHT, ABOUT 1/4 MILE W
 JV5030'OF CLIFFS LANDING, IN A CULTIVATED FIELD, ABOUT 12 FEET ABOVE
 JV5030'HIGH WATER AND 25 YARDS N OF SHORE, 7 YARDS N OF EDGE OF BANK,
 JV5030'AND 45 YARDS SE OF A LARGE CHERRY TREE.
 JV5030'
 JV5030'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5030'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5030'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5030'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5030'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5030'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5030'
 JV5030'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5030'FOLLOWS--N GABLE OF BARN, 3-1/2 MILES, S 15 DEG 40 MIN W.  NAIL IN
 JV5030'BLAZE IN 5-INCH LOCUST TREE, 13.55 METERS (44.5 FEET), S 57 DEG
 JV5030'21 MIN W.  NAIL IN BLAZE IN 15-INCH WALNUT TREE, 14.13 METERS (46.4
 JV5030'FEET), N 70 DEG 36 MIN W. E GABLE OF HOUSE, 300 YARDS, N 58 DEG 51
 JV5030'MIN W.  E GABLE OF BARN, 300 YARDS, N 54 DEG 18 MIN E. W CHIMNEY OF
 JV5030'HOUSE, 1-1/2 MILES, N 58 DEG 47 MIN E. NW CORNER OF MARTINS
 JV5030'SHACK, 77 YARDS, N 63 DEG 17 MIN E. W GABLE OF WHARF HOUSE, 1/4
 JV5030'MILE, N 75 DEG 41 MIN E. W GABLE BARN, 2-1/4 MILES, N 85 DEG
 JV5030'03 MIN E.  W CHIMNEY OF HOUSE, 1-3/4 MILES, S 76 DEG 51 MIN E.  N
 JV5030'GABLE OF SMALL FISHING SHACK, 3/4 MILE, S 17 DEG 42 MIN E.
 JV5030
 JV5030                          STATION RECOVERY (1938)
 JV5030
 JV5030'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5030'STATION IS A MARYLAND SHELL FISH SURVEY STATION ESTABLISHED IN
 JV5030'1909 AND IS THE CENTER OF A STANDARD M.S.F.S. MONUMENT PROJECTING
 JV5030'ABOUT 4 INCHES ABOVE GROUND.  STATION WAS TIED INTO TRIANGULATION
 JV5030'STATION STOOP, 1938, WHICH IS 29.762 METERS TO THE NNW.  STATION
 JV5030'IS ON THE STOOP PROPERTY ON CLIFF POINT, ON THE N SHORE OF
 JV5030'CHESTER RIVER ABOUT 16 METERS N OF HIGH-WATER LINE AND 5-1/2
 JV5030'METERS N OF 8-FOOT BLUFF AND ABOUT 23 METERS SW OF THE FRONT OF
 JV5030'THE SMALL WHITE BUNGALOW HOUSE ON THE PROPERTY.
 JV5030'
 JV5030'TO REACH STATION FROM CHESTERTOWN, TAKE POMONA ROAD, GO 4.0 MILES,
 JV5030'TURN LEFT AT POMONA AND CONTINUE ON MAIN-TRAVELED CONCRETE ROAD 3.8
 JV5030'MILES TO END OF PAVEMENT.  CONTINUE ON GRAVEL ROAD 0.5 MILE TO
 JV5030'FORK, TURN LEFT AND CONTINUE ON GRAVEL ROAD 0.8 MILE TO
 JV5030'T-INTERSECTION, TURN LEFT ON PRIVATE ROAD AND GO 0.1 MILE, TURN
 JV5030'RIGHT INTO DRIVE TO SMALL BUNGALOW TYPE HOUSE ON CLIFFS POINT
 JV5030'AND THE STATION.
 JV5030
 JV5030                          STATION RECOVERY (1940)
 JV5030
 JV5030'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (FLG)
 JV5030'BENCH MARK APPEARS TO HAVE BEEN ELEVATED FROM ITS ORIGINAL POSITION
 JV5030'BECAUSE THE LOCALITY IN WHICH IT IS LOCATED WAS FORMERLY A
 JV5030'CULTIVATED FIELD AND NOW IS A SMOOTH GRADED LAWN, YET THE STATION
 JV5030'MARK (A STANDARD MARYLAND SHELLFISH SURVEY MONUMENT-NO DISK)
 JV5030'PROJECTS ABOUT 6 INCHES ABOVE GROUND AT THE PRESENT TIME WHERE IT
 JV5030'APPEARS THAT A CERTAIN AMOUNT OF FILL HAS BEEN MADE TO BRING THE
 JV5030'LAWN TO ITS PRESENT GRADE.
 JV5030
 JV5030                          STATION RECOVERY (1961)
 JV5030
 JV5030'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5030'STATION RECOVERED AS DESCRIBED IN THE RECOVERY NOTE OF L.W.S. IN
 JV5030'1938 WHICH REFERRED TO THIS STATION AS BEING STATION BROWN
 JV5030'(M.S.F.C.) 1909.
 JV5030'
 JV5030'IT IS ON THE LAWN OF THE DORTHY STOOP RESIDENCE, 12 FT. W OF THE
 JV5030'WESTERLY EDGE OF SIDEWALK AND 26.9 FT. NORTHERLY OF THE CONCRETE
 JV5030'BULKHEAD.
 JV5030'
 JV5030'STATION SHOULD BE USED WITH CAUTION AS A POSITION COMPUTED FROM
 JV5030'OBSERVATIONS AT STATION STOOP 1938 DOES NOT AGREE PRECISELY WITH
 JV5030'THE FORMER POSITION OF THE STATION.
 JV5030
 JV5030                          STATION RECOVERY (1962)
 JV5030
 JV5030'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 JV5030'NO POSITIONS WERE TAKEN AT THIS STATION ON THIS DATE.  RECOVERED
 JV5030'AS DESCRIBED AND FOUND IN GOOD CONDITION.  THE MONUMENT WAS LOWERED
 JV5030'ABOUT 1 INCH, FLUSH WITH THE SURFACE OF THE GROUND, BY THE PROPERTY
 JV5030'OWNERS REQUEST.  PERMISSION TO LOWER THIS MARK WAS GRANTED.
 JV5030'
 JV5030'THE PREVIOUS DESCRIPTION OF THE TO REACH THE STATION IS
 JV5030'ADEQUATE.  ADDITIONAL NOTES ARE AS FOLLOWS--
 JV5030'
 JV5030'THE MARK IS A STANDARD M. S. F. S. 6 INCH SQUARE CONCRETE MONUMENT
 JV5030'WITH A SMALL HOLE IN ITS TOP AND CENTER FLUSH WITH THE SURFACE
 JV5030'OF THE GROUND.  IT IS 79.0 FEET SOUTH OF THE SOUTHWEST CORNER OF
 JV5030'TWO-STORY HOUSE, 51.0 FEET EAST OF A 30-INCH OAK TREE, 33.0 FEET
 JV5030'NORTH OF A CONCRETE BLOCK RETAINING WALL AND HIGHWATER LINE AND
 JV5030'13.0 FEET WEST OF THE WEST EDGE OF A SIDE-WALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3495 ***********************************************************************
 JU3495  DESIGNATION -  BROWN UPPER CHESTER RIVER
 JU3495  PID         -  JU3495
 JU3495  STATE/COUNTY-  MD/KENT
 JU3495  COUNTRY     -  US
 JU3495  USGS QUAD   -  CHURCH HILL (2017)
 JU3495
 JU3495                         *CURRENT SURVEY CONTROL
 JU3495  ______________________________________________________________________
 JU3495* NAD 83(1991) POSITION- 39 14 48.72950(N) 075 58 57.47513(W)   ADJUSTED
 JU3495* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3495  ______________________________________________________________________
 JU3495  GEOID HEIGHT    -        -33.490 (meters)                     GEOID18
 JU3495  LAPLACE CORR    -         -2.30  (seconds)                    DEFLEC18
 JU3495  HORZ ORDER      -  THIRD
 JU3495
 JU3495.The horizontal coordinates were established by classical geodetic methods
 JU3495.and adjusted by the National Geodetic Survey in January 1992.
 JU3495
 JU3495.The orthometric height was scaled from a topographic map.
 JU3495
 JU3495.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3495.GEOID18 height accuracy estimate available here.
 JU3495
 JU3495.Click photographs - Photos may exist for this station.
 JU3495
 JU3495.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3495
 JU3495. The following values were computed from the NAD 83(1991) position.
 JU3495
 JU3495;                    North         East     Units Scale Factor Converg.
 JU3495;SPC MD       -   175,901.365   487,819.477   MT  0.99997077   +0 38 18.7
 JU3495;SPC MD       -   577,103.06  1,600,454.40   sFT  0.99997077   +0 38 18.7
 JU3495;UTM  18      - 4,344,632.551   415,207.803   MT  0.99968852   -0 37 18.2
 JU3495
 JU3495!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3495!SPC MD       -   1.00000529  x   0.99997077  =   0.99997606
 JU3495!UTM  18      -   1.00000529  x   0.99968852  =   0.99969381
 JU3495
 JU3495:                Primary Azimuth Mark                     Grid Az
 JU3495:SPC MD       -  LOW                                      098 34 49.6
 JU3495:UTM  18      -  LOW                                      099 50 26.5
 JU3495
 JU3495_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1520744632(NAD 83)
 JU3495
 JU3495|---------------------------------------------------------------------|
 JU3495| PID    Reference Object                     Distance      Geod. Az  |
 JU3495|                                                           dddmmss.s |
 JU3495| JU3489 LOW                                 APPROX. 1.6 KM 0991308.3 |
 JU3495|---------------------------------------------------------------------|
 JU3495
 JU3495                          SUPERSEDED SURVEY CONTROL
 JU3495
 JU3495  NAD 83(1986)-  39 14 48.71901(N)    075 58 57.49008(W) AD(       ) 3
 JU3495  NAD 27      -  39 14 48.31200(N)    075 58 58.70000(W) AD(       ) 3
 JU3495  USSD        -  39 14 48.80000(N)    075 58 58.41100(W) AD(       ) 3
 JU3495
 JU3495.Superseded values are not recommended for survey control.
 JU3495
 JU3495.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3495.See file dsdata.pdf to determine how the superseded data were derived.
 JU3495
 JU3495_MARKER: N = NAIL
 JU3495_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JU3495_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3495
 JU3495  HISTORY     - Date     Condition        Report By
 JU3495  HISTORY     - 1909     MONUMENTED       CGS
 JU3495  HISTORY     - 1941     GOOD             CGS
 JU3495  HISTORY     - 1943     GOOD             CGS
 JU3495
 JU3495                          STATION DESCRIPTION
 JU3495
 JU3495'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JU3495'STATION IS ON THE N SIDE OF CHESTER RIVER, ABOUT 300 METERS E OF
 JU3495'TRAVILLA WHARF, ON A STEEP BANK ABOUT 20 FEET ABOVE HIGH WATER,
 JU3495'AND ABOUT 15 METERS FROM THE SHORE.  THE BANK IS COVERED WITH
 JU3495'SCRUB-OAK TREES.  ABOUT 10 METERS N OF THE STATION IS THE EDGE
 JU3495'OF A CULTIVATED FIELD.
 JU3495'
 JU3495'STATION IS MARKED BY A BURIED GLASS BOTTLE AND A NAIL IN CONCRETE
 JU3495'SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE TOP OF A 4-INCH
 JU3495'DRAINTILE AT THE SURFACE OF THE GROUND.  THE REFERENCE MARK IS A
 JU3495'BURIED QUART BOTTLE AND A NAIL IN CONCRETE AT THE TOP OF A 3-INCH
 JU3495'DRAINTILE AT THE SURFACE OF THE GROUND.
 JU3495'
 JU3495'REFERENCE MARK IS 6.065 METERS (19.90 FEET) FROM STATION
 JU3495'N 45 DEG 05 MIN E.
 JU3495
 JU3495                          STATION RECOVERY (1941)
 JU3495
 JU3495'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JU3495'STATION RECOVERED IN GOOD CONDITION ON LAND OF TRAVILLA FARM.  IT
 JU3495'IS LOCATED ON THE TOP OF A 20-FOOT BANK AND IS ABOUT 15 METERS
 JU3495'FROM HIGH-WATER LINE.  IT IS ABOUT 200 METERS SE OF STATION
 JU3495'TRAVILLA ON THE LAND OF C.C. JENKINS.
 JU3495
 JU3495                          STATION RECOVERY (1943)
 JU3495
 JU3495'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 JU3495'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED IN 1941 EXCEPT
 JU3495'FOR THE FOLLOWING ADDITION AND CORRECTION--
 JU3495'
 JU3495'TRAVILLA R.M. 1 IS 125.78 METERS NW OF STATION BROWN.  BEARING
 JU3495'(BROWN TO TRAVILLA R.M. 1) N 59 DEG 53 MIN W.
 JU3495'
 JU3495'BROWN IS ABOUT 115 METERS AND NOT 200 METERS SE OF STATION
 JU3495'TRAVILLA.
 JU3495'
 JU3495'THE REFERENCE MARK MENTIONED IN THE 1909 DESCRIPTION WAS SEARCHED
 JU3495'FOR.  PIECES OF CONCRETE WERE FOUND.  HENCE THIS REFERENCE MARK
 JU3495'SHOULD BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7276 ***********************************************************************
 HV7276  DESIGNATION -  BROWNE BASE NORTH
 HV7276  PID         -  HV7276
 HV7276  STATE/COUNTY-  MD/CALVERT
 HV7276  COUNTRY     -  US
 HV7276  USGS QUAD   -  NORTH BEACH (2016)
 HV7276
 HV7276                         *CURRENT SURVEY CONTROL
 HV7276  ______________________________________________________________________
 HV7276* NAD 83(1993) POSITION- 38 39 28.83771(N) 076 31 43.38383(W)   ADJUSTED
 HV7276* NAVD 88 ORTHO HEIGHT -    32.    (meters)      105.    (feet) SCALED
 HV7276  ______________________________________________________________________
 HV7276  GEOID HEIGHT    -        -33.765 (meters)                     GEOID18
 HV7276  LAPLACE CORR    -         -5.46  (seconds)                    DEFLEC18
 HV7276  HORZ ORDER      -  THIRD
 HV7276
 HV7276.The horizontal coordinates were established by classical geodetic methods
 HV7276.and adjusted by the National Geodetic Survey in November 1994.
 HV7276
 HV7276.The orthometric height was scaled from a topographic map.
 HV7276
 HV7276.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7276.GEOID18 height accuracy estimate available here.
 HV7276
 HV7276.Click photographs - Photos may exist for this station.
 HV7276
 HV7276.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7276
 HV7276. The following values were computed from the NAD 83(1993) position.
 HV7276
 HV7276;                    North         East     Units Scale Factor Converg.
 HV7276;SPC MD       -   110,148.909   441,019.341   MT  0.99995703   +0 17 44.9
 HV7276;SPC MD       -   361,380.21  1,446,910.95   sFT  0.99995703   +0 17 44.9
 HV7276;UTM  18      - 4,279,935.357   366,987.285   MT  0.99981787   -0 57 18.3
 HV7276
 HV7276!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7276!SPC MD       -   1.00000032  x   0.99995703  =   0.99995735
 HV7276!UTM  18      -   1.00000032  x   0.99981787  =   0.99981819
 HV7276
 HV7276_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6698779935(NAD 83)
 HV7276
 HV7276                          SUPERSEDED SURVEY CONTROL
 HV7276
 HV7276  NAD 83(1991)-  38 39 28.83770(N)    076 31 43.38383(W) AD(       ) 3
 HV7276  NAD 83(1986)-  38 39 28.83541(N)    076 31 43.39749(W) AD(       ) 3
 HV7276  NAD 27      -  38 39 28.39600(N)    076 31 44.56000(W) AD(       ) 3
 HV7276
 HV7276.Superseded values are not recommended for survey control.
 HV7276
 HV7276.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7276.See file dsdata.pdf to determine how the superseded data were derived.
 HV7276
 HV7276
 HV7276  HISTORY     - Date     Condition        Report By
 HV7276  HISTORY     - UNK      MONUMENTED
 HV7276  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7276
 HV7276                          STATION DESCRIPTION
 HV7276
 HV7276'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7276'STATION SEARCHED FOR BUT COULD NOT BE FOUND.  IT IS RECOMMENDED
 HV7276'THIS STATION BE CLASSED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7267 ***********************************************************************
 HV7267  DESIGNATION -  BROWNE BASE SOUTH
 HV7267  PID         -  HV7267
 HV7267  STATE/COUNTY-  MD/CALVERT
 HV7267  COUNTRY     -  US
 HV7267  USGS QUAD   -  NORTH BEACH (2016)
 HV7267
 HV7267                         *CURRENT SURVEY CONTROL
 HV7267  ______________________________________________________________________
 HV7267* NAD 83(1993) POSITION- 38 39 17.42791(N) 076 31 39.83505(W)   ADJUSTED
 HV7267* NAVD 88 ORTHO HEIGHT -    31.    (meters)      102.    (feet) SCALED
 HV7267  ______________________________________________________________________
 HV7267  GEOID HEIGHT    -        -33.775 (meters)                     GEOID18
 HV7267  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV7267  HORZ ORDER      -  THIRD
 HV7267
 HV7267.The horizontal coordinates were established by classical geodetic methods
 HV7267.and adjusted by the National Geodetic Survey in November 1994.
 HV7267
 HV7267.The orthometric height was scaled from a topographic map.
 HV7267
 HV7267.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7267.GEOID18 height accuracy estimate available here.
 HV7267
 HV7267.Click photographs - Photos may exist for this station.
 HV7267
 HV7267.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7267
 HV7267. The following values were computed from the NAD 83(1993) position.
 HV7267
 HV7267;                    North         East     Units Scale Factor Converg.
 HV7267;SPC MD       -   109,797.542   441,106.960   MT  0.99995724   +0 17 47.1
 HV7267;SPC MD       -   360,227.44  1,447,198.42   sFT  0.99995724   +0 17 47.1
 HV7267;UTM  18      - 4,279,582.210   367,067.201   MT  0.99981761   -0 57 15.9
 HV7267
 HV7267!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7267!SPC MD       -   1.00000047  x   0.99995724  =   0.99995771
 HV7267!UTM  18      -   1.00000047  x   0.99981761  =   0.99981808
 HV7267
 HV7267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6706779582(NAD 83)
 HV7267
 HV7267                          SUPERSEDED SURVEY CONTROL
 HV7267
 HV7267  NAD 83(1991)-  38 39 17.42790(N)    076 31 39.83505(W) AD(       ) 3
 HV7267  NAD 83(1986)-  38 39 17.42567(N)    076 31 39.84876(W) AD(       ) 3
 HV7267  NAD 27      -  38 39 16.98600(N)    076 31 41.01000(W) AD(       ) 3
 HV7267
 HV7267.Superseded values are not recommended for survey control.
 HV7267
 HV7267.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7267.See file dsdata.pdf to determine how the superseded data were derived.
 HV7267
 HV7267
 HV7267  HISTORY     - Date     Condition        Report By
 HV7267  HISTORY     - UNK      MONUMENTED
 HV7267  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7267
 HV7267                          STATION DESCRIPTION
 HV7267
 HV7267'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7267'STATION COULD NOT BE FOUND.  THE AREA OF THIS STATION HAS ERODED
 HV7267'AWAY AND IT IS PROBABLY DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4461 ***********************************************************************
 JV4461  DESIGNATION -  BROWNSTOWN PEPCO MICROWAVE
 JV4461  PID         -  JV4461
 JV4461  STATE/COUNTY-  MD/MONTGOMERY
 JV4461  COUNTRY     -  US
 JV4461  USGS QUAD   -  GERMANTOWN (2016)
 JV4461
 JV4461                         *CURRENT SURVEY CONTROL
 JV4461  ______________________________________________________________________
 JV4461* NAD 83(1993) POSITION- 39 08 15.47531(N) 077 17 35.98179(W)   ADJUSTED
 JV4461  ______________________________________________________________________
 JV4461  GEOID HEIGHT    -        -31.840 (meters)                     GEOID18
 JV4461  LAPLACE CORR    -          3.08  (seconds)                    DEFLEC18
 JV4461  HORZ ORDER      -  THIRD
 JV4461
 JV4461.The horizontal coordinates were established by classical geodetic methods
 JV4461.and adjusted by the National Geodetic Survey in November 1994.
 JV4461
 JV4461.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4461.GEOID18 height accuracy estimate available here.
 JV4461
 JV4461.Click photographs - Photos may exist for this station.
 JV4461
 JV4461.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4461
 JV4461. The following values were computed from the NAD 83(1993) position.
 JV4461
 JV4461;                    North         East     Units Scale Factor Converg.
 JV4461;SPC MD       -   163,325.742   374,640.379   MT  0.99996026   -0 11 02.8
 JV4461;SPC MD       -   535,844.54  1,229,132.64   sFT  0.99996026   -0 11 02.8
 JV4461;UTM  18      - 4,334,554.446   301,791.105   MT  1.00008376   -1 26 52.8
 JV4461
 JV4461_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0179134554(NAD 83)
 JV4461
 JV4461                          SUPERSEDED SURVEY CONTROL
 JV4461
 JV4461  NAD 83(1991)-  39 08 15.47503(N)    077 17 35.98181(W) AD(       ) 3
 JV4461  NAD 83(1986)-  39 08 15.47516(N)    077 17 35.99210(W) AD(       ) 3
 JV4461  NAD 27      -  39 08 15.09124(N)    077 17 37.04090(W) AD(       ) 3
 JV4461
 JV4461.Superseded values are not recommended for survey control.
 JV4461
 JV4461.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4461.See file dsdata.pdf to determine how the superseded data were derived.
 JV4461
 JV4461_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4461+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4461
 JV4461  HISTORY     - Date     Condition        Report By
 JV4461  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV4461  HISTORY     - 19950510 GOOD             USPSQD
 JV4461  HISTORY     - 20031201 GOOD             USPSQD
 JV4461  HISTORY     - 20050303 GOOD             USPSQD
 JV4461
 JV4461                          STATION DESCRIPTION
 JV4461
 JV4461'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV4461'THE STATION IS THE RED LIGHT MOUNTED AT THE TOP AND OFF CENTER
 JV4461'TO THE WEST, OF THE BROWNSTOWN POTOMAC ELECTRIC POWER COMPANY
 JV4461'MICROWAVE KGM 45, LOCATED 1.85 MILE NORTH OF THE JUNCTION OF
 JV4461'STATE HIGHWAY 28 AND STATE HIGHWAY 118.  IT IS KNOWN AS THE QUINCE
 JV4461'ORCHARD SUBSTATION AND IS ABOUT 300 FEET ABOVE THE GROUND.
 JV4461
 JV4461                          STATION RECOVERY (1995)
 JV4461
 JV4461'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4461'RECOVERED IN GOOD CONDITION.
 JV4461
 JV4461                          STATION RECOVERY (2003)
 JV4461
 JV4461'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV4461'RECOVERED IN GOOD CONDITION.
 JV4461
 JV4461                          STATION RECOVERY (2005)
 JV4461
 JV4461'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4461'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9397 ***********************************************************************
 DR9397  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9397  DESIGNATION -  BROWNTOWN
 DR9397  PID         -  DR9397
 DR9397  STATE/COUNTY-  MD/KENT
 DR9397  COUNTRY     -  US
 DR9397  USGS QUAD   -  GALENA (2017)
 DR9397
 DR9397                         *CURRENT SURVEY CONTROL
 DR9397  ______________________________________________________________________
 DR9397* NAD 83(2011) POSITION- 39 18 29.76360(N) 075 58 09.06779(W)   ADJUSTED
 DR9397* NAD 83(2011) ELLIP HT-   -11.854 (meters)        (09/18/23)   ADJUSTED
 DR9397* NAD 83(2011) EPOCH   -  2010.00
 DR9397* NAVD 88 ORTHO HEIGHT -    21.57  (meters)       70.8   (feet) GPS OBS
 DR9397  ______________________________________________________________________
 DR9397  GEOID HEIGHT    -        -33.436 (meters)                     GEOID18
 DR9397  NAD 83(2011) X  -  1,198,086.272 (meters)                     COMP
 DR9397  NAD 83(2011) Y  - -4,794,275.705 (meters)                     COMP
 DR9397  NAD 83(2011) Z  -  4,018,848.016 (meters)                     COMP
 DR9397  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC18
 DR9397
 DR9397  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9397  Standards:
 DR9397         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9397            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9397  -------------------------------------------------------------------
 DR9397  NETWORK    0.57   1.37           0.25   0.21   0.70     -0.00865241
 DR9397  -------------------------------------------------------------------
 DR9397  Click here for local accuracies and other accuracy information.
 DR9397
 DR9397.The horizontal coordinates were established by GPS observations
 DR9397.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9397
 DR9397.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9397.been affixed to the stable North American tectonic plate. See 
 DR9397.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9397
 DR9397.The horizontal coordinates are valid at the epoch date displayed above
 DR9397.which is a decimal equivalence of Year/Month/Day.
 DR9397
 DR9397.The orthometric height was determined by GPS observations and a
 DR9397.high-resolution geoid model using precise GPS observation and
 DR9397.processing techniques.
 DR9397
 DR9397.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9397.GEOID18 height accuracy estimate available here.
 DR9397
 DR9397.Click photographs - Photos may exist for this station.
 DR9397
 DR9397.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9397
 DR9397.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9397
 DR9397.The ellipsoidal height was determined by GPS observations
 DR9397.and is referenced to NAD 83.
 DR9397
 DR9397. The following values were computed from the NAD 83(2011) position.
 DR9397
 DR9397;                    North         East     Units Scale Factor Converg.
 DR9397;SPC MD       -   182,730.272   488,903.164   MT  0.99997828   +0 38 49.1
 DR9397;SPC MD       -   599,507.57  1,604,009.80   sFT  0.99997828   +0 38 49.1
 DR9397;UTM  18      - 4,351,434.009   416,441.112   MT  0.99968597   -0 36 50.4
 DR9397
 DR9397!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9397!SPC MD       -   1.00000186  x   0.99997828  =   0.99998014
 DR9397!UTM  18      -   1.00000186  x   0.99968597  =   0.99968783
 DR9397
 DR9397_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1644151434(NAD 83)
 DR9397
 DR9397                          SUPERSEDED SURVEY CONTROL
 DR9397
 DR9397.No superseded survey control is available for this station.
 DR9397
 DR9397_MARKER: DD = SURVEY DISK
 DR9397_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9397_STAMPING: BROWNTOWN 2021
 DR9397_MARK LOGO: MD-029
 DR9397_PROJECTION: FLUSH
 DR9397_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9397_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9397+STABILITY: SURFACE MOTION
 DR9397_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9397+SATELLITE: SATELLITE OBSERVATIONS - December 26, 2021
 DR9397
 DR9397  HISTORY     - Date     Condition        Report By
 DR9397  HISTORY     - 20211226 MONUMENTED       MDSHA
 DR9397  HISTORY     - 20250821 GOOD             PROFLN
 DR9397
 DR9397                          STATION DESCRIPTION
 DR9397
 DR9397'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9397'THE MARK IS LOCATED ABOUT 8.6 MI (13.8 KM) NORTHEAST OF CHESTERTOWN,
 DR9397'5.1 MI (8.2 KM) EAST OF LYNCH, 4.3 MI (6.9 KM) EAST-SOUTHEAST OF STILL
 DR9397'POND AND 1.4 MI (2.3 KM) EAST OF KENNEDYVILLE.
 DR9397'
 DR9397'TO REACH THE MARK FROM THE INTERSECTION OF MD 213 AND MD 298 PROCEED
 DR9397'SOUTH ON MD 298 FOR 0.92 MI (1.48 KM) TO THE MARK ON THE LEFT.
 DR9397'
 DR9397'THE MARK IS 157.6 FT (48.0 M) SOUTH OF A UTILITY POLE NUMBERED
 DR9397'CHOPTANK 124-73-17, 95.3 FT (29.0 M) NORTH-NORTHWEST OF A UTILITY POLE
 DR9397'NUMBERED CHOPTANK 121-104-48, 41.8 FT (12.7 M) EAST OF A STOP SIGN A
 DR9397'HEAD SIGN, 24.4 FT (7.4 M) EAST-NORTHEAST OF THE CENTERLINE OF STATE
 DR9397'ROUTE MD 298 SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND
 DR9397'ABOUT 2 FT (0.6 M) HIGHER THAN THE ROAD.
 DR9397
 DR9397                          STATION RECOVERY (2025)
 DR9397
 DR9397'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9397'THE MARK IS ACROSS THE ROAD FROM A ROAD SIGN INDICATING STOP AHEAD,
 DR9397'ABOUT 310 FT (94.5 M) NORTHWEST OF THE RAILROAD CROSSING, 2 FT (0.6 M)
 DR9397'HIGHER THAN THE ROAD, ON TOP OF A SMALL BANK ACROSS A DITCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9398 ***********************************************************************
 DR9398  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9398  DESIGNATION -  BROWNTOWN AZ MK
 DR9398  PID         -  DR9398
 DR9398  STATE/COUNTY-  MD/KENT
 DR9398  COUNTRY     -  US
 DR9398  USGS QUAD   -  GALENA (2017)
 DR9398
 DR9398                         *CURRENT SURVEY CONTROL
 DR9398  ______________________________________________________________________
 DR9398* NAD 83(2011) POSITION- 39 18 35.38219(N) 075 58 12.73892(W)   ADJUSTED
 DR9398* NAD 83(2011) ELLIP HT-   -16.697 (meters)        (09/18/23)   ADJUSTED
 DR9398* NAD 83(2011) EPOCH   -  2010.00
 DR9398* NAVD 88 ORTHO HEIGHT -    16.73  (meters)       54.9   (feet) GPS OBS
 DR9398  ______________________________________________________________________
 DR9398  GEOID HEIGHT    -        -33.434 (meters)                     GEOID18
 DR9398  NAD 83(2011) X  -  1,197,973.423 (meters)                     COMP
 DR9398  NAD 83(2011) Y  - -4,794,186.898 (meters)                     COMP
 DR9398  NAD 83(2011) Z  -  4,018,979.016 (meters)                     COMP
 DR9398  LAPLACE CORR    -         -2.49  (seconds)                    DEFLEC18
 DR9398
 DR9398  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9398  Standards:
 DR9398         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9398            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9398  -------------------------------------------------------------------
 DR9398  NETWORK    0.57   1.39           0.25   0.21   0.71     -0.00560070
 DR9398  -------------------------------------------------------------------
 DR9398  Click here for local accuracies and other accuracy information.
 DR9398
 DR9398.The horizontal coordinates were established by GPS observations
 DR9398.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9398
 DR9398.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9398.been affixed to the stable North American tectonic plate. See 
 DR9398.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9398
 DR9398.The horizontal coordinates are valid at the epoch date displayed above
 DR9398.which is a decimal equivalence of Year/Month/Day.
 DR9398
 DR9398.The orthometric height was determined by GPS observations and a
 DR9398.high-resolution geoid model using precise GPS observation and
 DR9398.processing techniques.
 DR9398
 DR9398.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9398.GEOID18 height accuracy estimate available here.
 DR9398
 DR9398.Click photographs - Photos may exist for this station.
 DR9398
 DR9398.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9398
 DR9398.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9398
 DR9398.The ellipsoidal height was determined by GPS observations
 DR9398.and is referenced to NAD 83.
 DR9398
 DR9398. The following values were computed from the NAD 83(2011) position.
 DR9398
 DR9398;                    North         East     Units Scale Factor Converg.
 DR9398;SPC MD       -   182,902.537   488,813.264   MT  0.99997848   +0 38 46.8
 DR9398;SPC MD       -   600,072.74  1,603,714.85   sFT  0.99997848   +0 38 46.8
 DR9398;UTM  18      - 4,351,608.161   416,355.049   MT  0.99968614   -0 36 52.8
 DR9398
 DR9398!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9398!SPC MD       -   1.00000262  x   0.99997848  =   0.99998110
 DR9398!UTM  18      -   1.00000262  x   0.99968614  =   0.99968876
 DR9398
 DR9398_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1635551608(NAD 83)
 DR9398
 DR9398                          SUPERSEDED SURVEY CONTROL
 DR9398
 DR9398.No superseded survey control is available for this station.
 DR9398
 DR9398_MARKER: DD = SURVEY DISK
 DR9398_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9398_STAMPING: BROWNTOWN AZ 2021
 DR9398_MARK LOGO: MD-029
 DR9398_PROJECTION: FLUSH
 DR9398_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9398_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9398+STABILITY: SURFACE MOTION
 DR9398_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9398+SATELLITE: SATELLITE OBSERVATIONS - December 26, 2021
 DR9398
 DR9398  HISTORY     - Date     Condition        Report By
 DR9398  HISTORY     - 20211226 MONUMENTED       MDSHA
 DR9398  HISTORY     - 20250821 GOOD             PROFLN
 DR9398
 DR9398                          STATION DESCRIPTION
 DR9398
 DR9398'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9398'THE MARK IS LOCATED ABOUT 8.7 MI (14.0 KM) NORTHEAST OF CHESTERTOWN,
 DR9398'5.0 MI (8.0 KM) EAST-NORTHEAST OF LYNCH, 4.2 MI (6.8 KM)
 DR9398'EAST-SOUTHEAST OF STILL POND AND 1.4 MI (2.3 KM) EAST-NORTHEAST OF
 DR9398'KENNEDYVILLE.
 DR9398'
 DR9398'TO REACH THE MARK FROM THE INTERSECTION OF MD 213 AND MD 298 PROCEED
 DR9398'SOUTH ON MD 298 FOR 0.80 MI (1.29 KM) TO THE MARK ON THE LEFT.
 DR9398'
 DR9398'THE MARK IS 171.1 FT (52.2 M) SOUTH OF A UTILITY POLE NUMBERED
 DR9398'CHOPTANK 124-73-15, 160.7 FT (49.0 M) SOUTHEAST OF A
 DR9398'TELECOMMUNICATIONS PEDESTAL NUMBERED 13, 159.4 FT (48.6 M)
 DR9398'NORTH-NORTHWEST OF A UTILITY POLE NUMBERED CHOPTANK 124-73-16, 147.9
 DR9398'FT (45.1 M) NORTH OF A RAIL ROAD CROSSING SIGN AHEAD SIGN, 25.4 FT
 DR9398'(7.7 M) NORTHEAST OF THE CENTERLINE OF STATE ROUTE MD 298 SET IN THE
 DR9398'TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND ABOUT 1 FT (0.3 M)
 DR9398'HIGHER THAN THE ROAD.
 DR9398
 DR9398                          STATION RECOVERY (2025)
 DR9398
 DR9398'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9398'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4601 ***********************************************************************
 JV4601  DESIGNATION -  BRUCHEY
 JV4601  PID         -  JV4601
 JV4601  STATE/COUNTY-  MD/FREDERICK
 JV4601  COUNTRY     -  US
 JV4601  USGS QUAD   -  FREDERICK (2016)
 JV4601
 JV4601                         *CURRENT SURVEY CONTROL
 JV4601  ______________________________________________________________________
 JV4601* NAD 83(1991) POSITION- 39 25 55.40046(N) 077 29 08.82411(W)   ADJUSTED
 JV4601* NAVD 88 ORTHO HEIGHT -   239.    (meters)      784.    (feet) SCALED
 JV4601  ______________________________________________________________________
 JV4601  GEOID HEIGHT    -        -32.855 (meters)                     GEOID18
 JV4601  LAPLACE CORR    -          2.67  (seconds)                    DEFLEC18
 JV4601  HORZ ORDER      -  SECOND
 JV4601
 JV4601.The horizontal coordinates were established by classical geodetic methods
 JV4601.and adjusted by the National Geodetic Survey in January 1992.
 JV4601
 JV4601.The orthometric height was scaled from a topographic map.
 JV4601
 JV4601.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4601.GEOID18 height accuracy estimate available here.
 JV4601
 JV4601.Click photographs - Photos may exist for this station.
 JV4601
 JV4601.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4601
 JV4601. The following values were computed from the NAD 83(1991) position.
 JV4601
 JV4601;                    North         East     Units Scale Factor Converg.
 JV4601;SPC MD       -   196,082.695   358,175.690   MT  0.99999691   -0 18 17.6
 JV4601;SPC MD       -   643,314.64  1,175,114.74   sFT  0.99999691   -0 18 17.6
 JV4601;UTM  18      - 4,367,672.890   286,053.656   MT  1.00016360   -1 34 46.1
 JV4601
 JV4601!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4601!SPC MD       -   0.99996769  x   0.99999691  =   0.99996460
 JV4601!UTM  18      -   0.99996769  x   1.00016360  =   1.00013129
 JV4601
 JV4601:                Primary Azimuth Mark                     Grid Az
 JV4601:SPC MD       -  BRUCHEY AZ MK                            122 49 56.5
 JV4601:UTM  18      -  BRUCHEY AZ MK                            124 06 25.0
 JV4601
 JV4601_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8605367672(NAD 83)
 JV4601
 JV4601|---------------------------------------------------------------------|
 JV4601| PID    Reference Object                     Distance      Geod. Az  |
 JV4601|                                                           dddmmss.s |
 JV4601| CJ8158 BRUCHEY RM 1                         29.853 METERS 02643     |
 JV4601| JV4598 FREDERICK MUNICIPAL TANK            APPROX. 7.1 KM 1100330.0 |
 JV4601| JV3605 BRUCHEY AZ MK                                      1223138.9 |
 JV4601| CJ8159 BRUCHEY RM 2                         17.430 METERS 18246     |
 JV4601|---------------------------------------------------------------------|
 JV4601
 JV4601                          SUPERSEDED SURVEY CONTROL
 JV4601
 JV4601  NAD 83(1986)-  39 25 55.39964(N)    077 29 08.83410(W) AD(       ) 2
 JV4601  NAD 27      -  39 25 55.02580(N)    077 29 09.88740(W) AD(       ) 2
 JV4601
 JV4601.Superseded values are not recommended for survey control.
 JV4601
 JV4601.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4601.See file dsdata.pdf to determine how the superseded data were derived.
 JV4601
 JV4601_MARKER: DS = TRIANGULATION STATION DISK
 JV4601_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4601_STAMPING: BRUCHEY 1957
 JV4601_MARK LOGO: CGS
 JV4601_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV4601_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4601+STABILITY: SURFACE MOTION
 JV4601
 JV4601  HISTORY     - Date     Condition        Report By
 JV4601  HISTORY     - 1958     MONUMENTED       CGS
 JV4601  HISTORY     - 1987     GOOD             NGS
 JV4601
 JV4601                          STATION DESCRIPTION
 JV4601
 JV4601'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4601'STATION IS LOCATED ABOUT 4.0 MILES WEST OF FREDERICK, ABOUT 3-1/2
 JV4601'MILES EAST OF MIDDLETOWN AND ABOUT 6.7 MILES SOUTHEAST OF
 JV4601'MYRESVILLE.  STATION IS 28 FEET SOUTHWEST OF A TRIANGLE BLAZED
 JV4601'TREE, 17 FEET NORTH-NORTHEAST OF A TRIANGLE BLAZED TREE AND 14
 JV4601'FEET NORTH-NORTHWEST OF A WITNESS POST.  THE MARK PROJECTS 4
 JV4601'INCHES AND THE DISK IS STAMPED BRUCHEY 1957.
 JV4601'
 JV4601'REFERENCE MARK NO. 1 IS 30 FEET NORTH-NORTHEAST OF APPROXIMATE
 JV4601'CENTERLINE OF ROAD.  THE MARK PROJECTS 3 INCHES AND THE DISK IS
 JV4601'STAMPED BRUCHEY NO 1 1957.
 JV4601'
 JV4601'REFERENCE MARK NO. 2 IS 41 FEET SOUTH OF A TRIANGLE BLAZED
 JV4601'TREE.  THE MARK IS SET IN A DRILL HOLE IN OUTCROPPING ROCK,
 JV4601'PROJECTS 3 INCHES AND THE DISK IS STAMPED BRUCHEY NO 2 1957.
 JV4601'
 JV4601'AZIMUTH MARK IS 30-1/2 FEET NORTH-NORTHEAST OF APPROXIMATE
 JV4601'CENTERLINE OF U.S. HIGHWAY NO. 40, 5 FEET WEST-NORTHWEST OF
 JV4601'POWERLINE POLE WITH TRANSFORMER AND 2 FEET WEST-NORTHWEST OF
 JV4601'WITNESS POST.  THE MARK PROJECTS 2 INCHES AND THE DISK IS STAMPED
 JV4601'BRUCHEY 1957.
 JV4601'
 JV4601'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND
 JV4601'ALT. U.S. HIGHWAY NO 40 IN THE WEST EDGE OF FREDERICK, GO WESTERLY
 JV4601'ON U.S. HIGHWAY NO. 40 FOR 0.55 MILE TO AZIMUTH MARK ON RIGHT
 JV4601'(NORTHEAST) SIDE OF HIGHWAY.  CONTINUE NORTHWESTERLY ON
 JV4601'U.S. HIGHWAY NO. 40 FOR 1.1 MILES TO PICNIC AREA ON RIGHT
 JV4601'(NORTHEAST) SIDE OF HIGHWAY.  CONTINUE NORTHWESTERLY ON
 JV4601'U.S. HIGHWAY NO. 40 FOR 0.2 MILE TO DIRT SIDE ROAD RIGHT.  TURN
 JV4601'SHARP RIGHT AND GO EASTERLY AND NORTHEASTERLY ON DIRT ROAD
 JV4601'FOR 0.25 MILE TO WOODS ROAD LEFT AT SIGN NO TRESPASSING.
 JV4601'TURN LEFT AND GO NORTHERLY ON WOODS ROAD FOR 0.1 MILE TO
 JV4601'FORKS.  TAKE RIGHT FORK AND GO ABOUT 30 YARDS TO TOP OF RIDGE
 JV4601'AND STATION AS DESCRIBED.
 JV4601'
 JV4601'DUE TO HEAVY GROWTH OF TIMBER, DISTANCE FROM REFERENCE MARK NO. 1
 JV4601'TO REFERENCE MARK NO. 2 WAS NOT MEASURED.
 JV4601'
 JV4601'NOTE--IF LEAVES ARE ON TREES, A SMALL AMOUNT OF CLEARING MAY
 JV4601'BE NECESSARY TO MAKE AZIMUTH MARK VG.
 JV4601'
 JV4601'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV4601
 JV4601                          STATION RECOVERY (1987)
 JV4601
 JV4601'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 JV4601'THE DESIGNATED MARK WAS RECOVERED AS PREVIOUSLY DESCRIBED.
 JV4601'BOTH REFERENCE MARKS AND THE AZIMUTH MARK WERE ALSO RECOVERED AND
 JV4601'FOUND IN GOOD CONDITION.  A SIDEWALK HAS BEEN BUILT OVER THE
 JV4601'AZIMUTH MARK AND A 30 CM (10 INCH) ACCESS COVER PLACED OVER THE
 JV4601'MARK.
 JV4601'ADDITIONAL INFORMATION ON THE AZIMUTH MARK FOLLOWS.
 JV4601'THE AZIMUTH MARK IS SET IN THE TOP OF A 30 CM (10 INCH) SQUARE
 JV4601'CONCRETE POST WHICH IS 0.5 METERS (1.5 FT) BELOW THE TOP OF THE
 JV4601'SIDEWALK, THE ACCESS COVER IS ROUND AND HAS A LARGE S INSCRIBED ON
 JV4601'ITS TOP.  IT IS 3.45 KN (2.15 MI) NORTHWEST ALONG HIGHWAY 40 FROM
 JV4601'ITS JUNCTION WITH U.S. HIGHWAY 15 IN THE WEST PART OF FREDERICK,
 JV4601'9.3 METERS (30.5 FT) NORTHEAST FROM THE CENTER OF U.S. HIGHWAY 40,
 JV4601'51.7 METERS (169.5 FT) SOUTHEAST FROM THE SOUTHEAST END OF THE
 JV4601'NORTH PARAPET WALL OF A BRIDGE 14 METERS (46 FT) IN LENGTH,
 JV4601'11.6 METERS (38 FT) NORTHWEST FROM THE CENTER OF THE MOST NORTHWEST
 JV4601'ENTERNCE ROAD TO THE STONEGATE SHOPPING CENTER, 4.1 METERS (13.3 FT)
 JV4601'EAST-SOUTHEAST FROM A FIRE HYDRANT AND 24.8 METERS (81.5 FT) SOUTH
 JV4601'FROM A POWERLINE POLE NUMBERED 100 A 9-1/2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3605 ***********************************************************************
 JV3605  DESIGNATION -  BRUCHEY AZ MK
 JV3605  PID         -  JV3605
 JV3605  STATE/COUNTY-  MD/FREDERICK
 JV3605  COUNTRY     -  US
 JV3605  USGS QUAD   -  FREDERICK (2016)
 JV3605
 JV3605                         *CURRENT SURVEY CONTROL
 JV3605  ______________________________________________________________________
 JV3605* NAD 83(1986) POSITION- 39 25 29.     (N) 077 28 14.     (W)   SCALED
 JV3605* NAVD 88 ORTHO HEIGHT -   131.566 (meters)      431.65  (feet) ADJUSTED
 JV3605  ______________________________________________________________________
 JV3605  GEOID HEIGHT    -        -32.827 (meters)                     GEOID18
 JV3605  DYNAMIC HEIGHT  -        131.495 (meters)      431.41  (feet) COMP
 JV3605  MODELED GRAVITY -    980,086.7   (mgal)                       NAVD 88
 JV3605
 JV3605  VERT ORDER      -  SECOND    CLASS 0
 JV3605
 JV3605.The horizontal coordinates were scaled from a map and have
 JV3605.an estimated accuracy of +/- 6 seconds.
 JV3605
 JV3605.The orthometric height was determined by differential leveling and
 JV3605.adjusted by the NATIONAL GEODETIC SURVEY
 JV3605.in June 1991.
 JV3605
 JV3605.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3605.GEOID18 height accuracy estimate available here.
 JV3605
 JV3605.Click photographs - Photos may exist for this station.
 JV3605
 JV3605.The dynamic height is computed by dividing the NAVD 88
 JV3605.geopotential number by the normal gravity value computed on the
 JV3605.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3605.degrees latitude (g = 980.6199 gals.).
 JV3605
 JV3605.The modeled gravity was interpolated from observed gravity values.
 JV3605
 JV3605;                    North         East    Units  Estimated Accuracy
 JV3605;SPC MD       -   195,260.      359,480.      MT  (+/- 180 meters Scaled)
 JV3605
 JV3605_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ873668(NAD 83)
 JV3605
 JV3605                          SUPERSEDED SURVEY CONTROL
 JV3605
 JV3605  NGVD 29 (11/26/84)  131.785  (m)          432.36   (f) ADJUSTED    2 0
 JV3605
 JV3605.Superseded values are not recommended for survey control.
 JV3605
 JV3605.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3605.See file dsdata.pdf to determine how the superseded data were derived.
 JV3605
 JV3605_MARKER: DZ = AZIMUTH MARK DISK
 JV3605_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3605_STAMPING: BRUCHEY 1957
 JV3605_MARK LOGO: CGS
 JV3605_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3605_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3605+STABILITY: SURFACE MOTION
 JV3605_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3605+SATELLITE: SATELLITE OBSERVATIONS - November 02, 2003
 JV3605
 JV3605  HISTORY     - Date     Condition        Report By
 JV3605  HISTORY     - 1957     MONUMENTED       CGS
 JV3605  HISTORY     - 20000110 GOOD             GEOMET
 JV3605  HISTORY     - 20031102 GOOD             USPSQD
 JV3605
 JV3605                          STATION DESCRIPTION
 JV3605
 JV3605'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV3605'3.5 MI W FROM FREDERICK.
 JV3605'3.5 MILES W ALONG US HIGHWAY 40 FROM THE POST OFFICE AT FREDERICK
 JV3605'147.0 FT SE OF THE E CORNER OF THE CONCRETE BRIDGE OVER ROCK
 JV3605'CREEK, 30.4 FT NE OF THE CENER LINE OF THE HIGHWAY, 4.9 FT NW OF
 JV3605'A POWER LINE POLE, 1.9 FT NW OF A WITNESS POST, ABOUT 1 FT LOWER
 JV3605'THAN THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST
 JV3605'PROJECTING 0.3 FT ABOVE THE GROUND.
 JV3605
 JV3605                          STATION RECOVERY (2000)
 JV3605
 JV3605'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (DAR)
 JV3605'RECOVERED AS DESCRIBED.
 JV3605
 JV3605                          STATION RECOVERY (2003)
 JV3605
 JV3605'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV3605'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2602 ***********************************************************************
 DJ2602  DESIGNATION -  BRUNSWICK 2
 DJ2602  PID         -  DJ2602
 DJ2602  STATE/COUNTY-  MD/FREDERICK
 DJ2602  COUNTRY     -  US
 DJ2602  USGS QUAD   -  POINT OF ROCKS (2016)
 DJ2602
 DJ2602                         *CURRENT SURVEY CONTROL
 DJ2602  ______________________________________________________________________
 DJ2602* NAD 83(2011) POSITION- 39 19 02.99928(N) 077 36 40.44276(W)   ADJUSTED
 DJ2602* NAD 83(2011) ELLIP HT-   106.519 (meters)        (06/27/12)   ADJUSTED
 DJ2602* NAD 83(2011) EPOCH   -  2010.00
 DJ2602* NAVD 88 ORTHO HEIGHT -   139.538 (meters)      457.80  (feet) ADJUSTED
 DJ2602  ______________________________________________________________________
 DJ2602  GEOID HEIGHT    -        -33.017 (meters)                     GEOID18
 DJ2602  NAD 83(2011) X  -  1,060,093.532 (meters)                     COMP
 DJ2602  NAD 83(2011) Y  - -4,826,093.594 (meters)                     COMP
 DJ2602  NAD 83(2011) Z  -  4,019,716.030 (meters)                     COMP
 DJ2602  LAPLACE CORR    -          6.26  (seconds)                    DEFLEC18
 DJ2602  DYNAMIC HEIGHT  -        139.461 (meters)      457.55  (feet) COMP
 DJ2602  MODELED GRAVITY -    980,072.0   (mgal)                       NAVD 88
 DJ2602
 DJ2602  VERT ORDER      -  SECOND    CLASS I
 DJ2602
 DJ2602  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ2602  Standards:
 DJ2602         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ2602            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ2602  -------------------------------------------------------------------
 DJ2602  NETWORK    0.35   0.57           0.16   0.12   0.29     -0.00986502
 DJ2602  -------------------------------------------------------------------
 DJ2602  Click here for local accuracies and other accuracy information.
 DJ2602
 DJ2602.The horizontal coordinates were established by GPS observations
 DJ2602.and adjusted by the National Geodetic Survey in June 2012.
 DJ2602
 DJ2602.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ2602.been affixed to the stable North American tectonic plate. See 
 DJ2602.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ2602
 DJ2602.The horizontal coordinates are valid at the epoch date displayed above
 DJ2602.which is a decimal equivalence of Year/Month/Day.
 DJ2602
 DJ2602.The orthometric height was determined by differential leveling and
 DJ2602.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2602.in October 2007.
 DJ2602
 DJ2602.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2602.GEOID18 height accuracy estimate available here.
 DJ2602
 DJ2602.Click photographs - Photos may exist for this station.
 DJ2602
 DJ2602.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ2602
 DJ2602.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ2602
 DJ2602.The ellipsoidal height was determined by GPS observations
 DJ2602.and is referenced to NAD 83.
 DJ2602
 DJ2602.The dynamic height is computed by dividing the NAVD 88
 DJ2602.geopotential number by the normal gravity value computed on the
 DJ2602.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2602.degrees latitude (g = 980.6199 gals.).
 DJ2602
 DJ2602.The modeled gravity was interpolated from observed gravity values.
 DJ2602
 DJ2602. The following values were computed from the NAD 83(2011) position.
 DJ2602
 DJ2602;                    North         East     Units Scale Factor Converg.
 DJ2602;SPC MD       -   183,429.734   347,289.915   MT  0.99997951   -0 23 01.1
 DJ2602;SPC MD       -   601,802.39  1,139,400.33   sFT  0.99997951   -0 23 01.1
 DJ2602;UTM  18      - 4,355,262.363   274,887.145   MT  1.00022399   -1 39 18.8
 DJ2602
 DJ2602!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ2602!SPC MD       -   0.99998329  x   0.99997951  =   0.99996280
 DJ2602!UTM  18      -   0.99998329  x   1.00022399  =   1.00020727
 DJ2602
 DJ2602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7488755262(NAD 83)
 DJ2602
 DJ2602                          SUPERSEDED SURVEY CONTROL
 DJ2602
 DJ2602  NAD 83(2007)-  39 19 02.99943(N)    077 36 40.44352(W) AD(2002.00) B
 DJ2602  ELLIP H (11/08/11)  106.543  (m)                       GP(2002.00) 4 1
 DJ2602  NAVD 88             139.54   (m)          457.8    (f) LEVELING    3  
 DJ2602
 DJ2602.Superseded values are not recommended for survey control.
 DJ2602
 DJ2602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ2602.See file dsdata.pdf to determine how the superseded data were derived.
 DJ2602
 DJ2602_MARKER: DD = SURVEY DISK
 DJ2602_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ2602_STAMPING: BRUNSWICK 2 2005
 DJ2602_MARK LOGO: MDSHA
 DJ2602_PROJECTION: FLUSH
 DJ2602_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ2602+STABILITY: SURFACE MOTION
 DJ2602_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ2602+SATELLITE: SATELLITE OBSERVATIONS - January 05, 2024
 DJ2602
 DJ2602  HISTORY     - Date     Condition        Report By
 DJ2602  HISTORY     - 2005     MONUMENTED       MDSHA
 DJ2602  HISTORY     - 20070724 GOOD             MDSHA
 DJ2602  HISTORY     - 20130520 GOOD             INDIV
 DJ2602  HISTORY     - 20160905 GOOD             BASE9
 DJ2602  HISTORY     - 20170803 GOOD             NGS
 DJ2602  HISTORY     - 20240105 GOOD             DEI
 DJ2602
 DJ2602                          STATION DESCRIPTION
 DJ2602
 DJ2602'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2005 (SKA)
 DJ2602'THE MARK IS LOCATED ABOUT 5.4 MI (8.69 KM) SOUTH OF BURKITTSVILLE, 2.8
 DJ2602'MI (4.51 KM) EAST-SOUTHEAST OF KNOXVILLE AND 0.9 MI (1.45 KM) EAST OF
 DJ2602'BRUNSWICK ON TOWN OF BRUNSWICK PROPERTY NEAR THE MUNICIPAL SWIMMING
 DJ2602'POOL.
 DJ2602'
 DJ2602'TO REACH FROM THE INTERSECTION OF US HIGHWAY 340 AND MD ROUTE 17, GO
 DJ2602'SOUTHEAST ON MD ROUTE 17 FOR 1.22 MI (1.96 KM) TO THE INTERSECTION OF
 DJ2602'MD ROUTE 464.  GO SOUTHEAST ON MD ROUTE 464 FOR 1.01 MI (1.63 KM) TO
 DJ2602'THE INTERSECTION OF CUMMINGS DRIVE AND THE MARK IN THE EAST ANGLE OF
 DJ2602'THE INTERSECTION.
 DJ2602'
 DJ2602'IT IS 103.7 FT (31.6 M) NORTHEAST OF THE CENTER OF CUMMINGS DRIVE,
 DJ2602'84.9 FT (25.9 M) EAST-NORTHEAST OF A FIRE HYDRANT, 59.3 FT (18.1 M)
 DJ2602'SOUTHEAST OF THE CENTER OF MD ROUTE 464, 55.5 FT (158.3 M) SOUTHWEST
 DJ2602'OF THE SOUTHWEST CORNER OF A CHAIN-LINK FENCE, 2.0 FT (0.6 M) NORTH OF
 DJ2602'A WITNESS POST, SET IN THE TOP OF A 12-INCH (30 CM) ROUND CONCRETE
 DJ2602'POST FLUSH WITH THE GROUND.
 DJ2602
 DJ2602                          STATION RECOVERY (2007)
 DJ2602
 DJ2602'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (DCS)
 DJ2602'RECOVERED IN GOOD CONDITION.
 DJ2602
 DJ2602                          STATION RECOVERY (2013)
 DJ2602
 DJ2602'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (WRA)
 DJ2602'RECOVERED AS DESCRIBED, USED FOR GPS STATIC SURVEY
 DJ2602
 DJ2602                          STATION RECOVERY (2016)
 DJ2602
 DJ2602'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 DJ2602'WITNESS POST HAS BEEN REMOVED.  MARK IS 1.80 M (5.9 FT) SOUTHEAST OF
 DJ2602'THE SOUTHEAST EDGE OF A SIDEWALK AND IS RECESSED 0.10 M (0.3 FT).  ALL
 DJ2602'OTHER REFERENCES ARE AS NOTED IN 2005 DESCRIPTION.
 DJ2602
 DJ2602                          STATION RECOVERY (2017)
 DJ2602
 DJ2602'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (GS)
 DJ2602'RECOVERED AS DESCRIBED.
 DJ2602
 DJ2602                          STATION RECOVERY (2024)
 DJ2602
 DJ2602'RECOVERY NOTE BY DEWBERRY ENGINEERING INC. 2024 (GS)
 DJ2602'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4946 ***********************************************************************
 HV4946  DESIGNATION -  BRYAN 2
 HV4946  PID         -  HV4946
 HV4946  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4946  COUNTRY     -  US
 HV4946  USGS QUAD   -  MOUNT VERNON (2019)
 HV4946
 HV4946                         *CURRENT SURVEY CONTROL
 HV4946  ______________________________________________________________________
 HV4946* NAD 83(1993) POSITION- 38 41 43.52649(N) 077 04 05.85889(W)   ADJUSTED
 HV4946* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV4946  ______________________________________________________________________
 HV4946  GEOID HEIGHT    -        -32.425 (meters)                     GEOID18
 HV4946  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 HV4946  HORZ ORDER      -  THIRD
 HV4946
 HV4946.The horizontal coordinates were established by classical geodetic methods
 HV4946.and adjusted by the National Geodetic Survey in November 1994.
 HV4946
 HV4946.The orthometric height was scaled from a topographic map.
 HV4946
 HV4946.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4946.GEOID18 height accuracy estimate available here.
 HV4946
 HV4946.Click photographs - Photos may exist for this station.
 HV4946
 HV4946.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4946
 HV4946. The following values were computed from the NAD 83(1993) position.
 HV4946
 HV4946;                    North         East     Units Scale Factor Converg.
 HV4946;SPC MD       -   114,198.318   394,058.914   MT  0.99995478   -0 02 34.3
 HV4946;SPC MD       -   374,665.65  1,292,841.62   sFT  0.99995478   -0 02 34.3
 HV4946;SPC VA N     - 2,115,162.058 3,624,542.125   MT  0.99994931   +0 53 36.8
 HV4946;SPC VA N     - 6,939,494.19 11,891,518.62   sFT  0.99994931   +0 53 36.8
 HV4946;UTM  18      - 4,285,008.511   320,128.876   MT  0.99999843   -1 17 36.3
 HV4946
 HV4946!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4946!SPC MD       -   1.00000419  x   0.99995478  =   0.99995897
 HV4946!SPC VA N     -   1.00000419  x   0.99994931  =   0.99995350
 HV4946!UTM  18      -   1.00000419  x   0.99999843  =   1.00000262
 HV4946
 HV4946:                Primary Azimuth Mark                     Grid Az
 HV4946:SPC MD       -  VANE ON MANSION W SHERIDAN PT            003 46 42.9
 HV4946:SPC VA N     -  VANE ON MANSION W SHERIDAN PT            002 50 31.8
 HV4946:UTM  18      -  VANE ON MANSION W SHERIDAN PT            005 01 44.9
 HV4946
 HV4946_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2012885008(NAD 83)
 HV4946
 HV4946|---------------------------------------------------------------------|
 HV4946| PID    Reference Object                     Distance      Geod. Az  |
 HV4946|                                                           dddmmss.s |
 HV4946| HV4932 VANE ON MANSION W SHERIDAN PT       APPROX. 1.8 KM 0034408.6 |
 HV4946| HV4916 FORT HUNT YELLOW WATER TANK         APPROX. 2.8 KM 0353402.0 |
 HV4946| HV4972 SHERIDAN PT LIGHT                   APPROX. 2.2 KM 0534355.7 |
 HV4946| HV4971 UPPER POTOMAC RIVER LT 77           APPROX. 2.1 KM 0540511.5 |
 HV4946| HV4950 BRYAN PT END OF DOCK                164.402 METERS 05424     |
 HV4946| HV4954 FT WASHINGTON FLAGPOLE              APPROX. 3.8 KM 0565442.1 |
 HV4946| HV4956 FT WASHINGTON HIGH WATER TANK       APPROX. 4.3 KM 0575900.5 |
 HV4946| HV4957 FT WASHINGTON LOW WATER TANK        APPROX. 4.3 KM 0580823.8 |
 HV4946| HV4960 MOCKLEYS PT FLAGPOLE                APPROX. 2.0 KM 0710944.6 |
 HV4946| HV4951 BRYANTS POINT FLAGSTAFF             208.416 METERS 08541     |
 HV4946| DC6743 BRYAN 2 RM 2                         17.235 METERS 08838     |
 HV4946| DC6742 BRYAN 2 RM 1                         24.180 METERS 10242     |
 HV4946| DC6744 BRYAN 2 RM 3                         20.663 METERS 21635     |
 HV4946| HV4953 BRYAN PT VANE ON WHITE HOUSE        138.292 METERS 22457     |
 HV4946| HV4952 BRYAN PT FLAGPOLE                   156.244 METERS 23230     |
 HV4946| HV4944 MARSHALL HALL END OF DOCK           APPROX. 2.9 KM 2504930.4 |
 HV4946| HV4911 CONCRETE RNG POST S MT VERNON       APPROX. 2.4 KM 2815233.9 |
 HV4946| HV4921 MT VERNON DOCK VANE ON CUPOLA       APPROX. 2.0 KM 3011415.2 |
 HV4946| HV4919 MOUNT VERNON HILL FLAGPOLE          APPROX. 2.0 KM 3110743.6 |
 HV4946| HV4922 MT VERNON MANSION CUPOLA            APPROX. 2.1 KM 3115223.0 |
 HV4946|---------------------------------------------------------------------|
 HV4946
 HV4946                          SUPERSEDED SURVEY CONTROL
 HV4946
 HV4946  NAD 83(1991)-  38 41 43.52437(N)    077 04 05.86143(W) AD(       ) 3
 HV4946  NAD 83(1986)-  38 41 43.52603(N)    077 04 05.87358(W) AD(       ) 3
 HV4946  NAD 27      -  38 41 43.10600(N)    077 04 06.95800(W) AD(       ) 3
 HV4946
 HV4946.Superseded values are not recommended for survey control.
 HV4946
 HV4946.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4946.See file dsdata.pdf to determine how the superseded data were derived.
 HV4946
 HV4946_MARKER: DS = TRIANGULATION STATION DISK
 HV4946_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4946_STAMPING: BRYAN 2 1928
 HV4946_MARK LOGO: CGS
 HV4946_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4946+STABILITY: SURFACE MOTION
 HV4946_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV4946+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2004
 HV4946
 HV4946  HISTORY     - Date     Condition        Report By
 HV4946  HISTORY     - 1928     MONUMENTED       CGS
 HV4946  HISTORY     - 1938     GOOD             CGS
 HV4946  HISTORY     - 1958     GOOD             CGS
 HV4946  HISTORY     - 1959     GOOD             CGS
 HV4946  HISTORY     - 1974     GOOD             NGS
 HV4946  HISTORY     - 20040915 GOOD             GEOCAC
 HV4946
 HV4946                          STATION DESCRIPTION
 HV4946
 HV4946'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4946'STATION IS ON THE E SHORE OF THE POTOMAC RIVER ON THE TOP OF THE
 HV4946'SHORE BLUFF AT BRYAN POINT, ON THE LAND OF MR. BLISS, JUST S OF
 HV4946'RED FISH COMMISSION BUILDING AND NEAR THE APPROXIMATE POSITION OF
 HV4946'BRYAN POINT STATION 1901.  MARK PROJECTS SEVERAL INCHES ABOVE
 HV4946'SURFACE AND STAMPED BRYAN 2 1928.
 HV4946'
 HV4946'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV4946'DISKS SET IN CONCRETE.
 HV4946'
 HV4946'REFERENCE MARK NO.1 IS CLOSE TO THE WIRE FENCE N OF STATION,
 HV4946'PROJECTS SEVERAL INCHES ABOVE SURFACE STAMPED BRYAN 2 NO.1 1928.
 HV4946'
 HV4946'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV4946
 HV4946                          STATION RECOVERY (1938)
 HV4946
 HV4946'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV4946'STATION IS ON E SHORE OF POTOMAC RIVER, AT BRYAN POINT, ON TOP OF
 HV4946'THE BLUFF, ABOUT 150 METERS DOWNSTREAM FROM THE MAIN ROAD THAT
 HV4946'RUNS NNW FROM INSHORE DOWN TO THE SITE OF THE OLD BRYAN POINT
 HV4946'PIER, NOW IN RUINS.  THE STATION IS 1-1/2 METERS INSHORE FROM THE
 HV4946'TOP OF THE BLUFF WHICH BORDERS THE SHORELINE, 102 METERS UPSTREAM
 HV4946'FROM THE PIER OF THE RESIDENCE WHICH IS ABOUT 30 METERS TO THE
 HV4946'SE OF THE PIER AND AMONG LARGE TREES.  THE STATION MARK IS IN AN
 HV4946'OPEN GRASSY PASTURE, 12 METERS TOWARD THE SHORE FROM A DIM ROAD
 HV4946'WHICH FOLLOWS THE TOP OF THE BLUFF FROM THE MAIN ROAD AT THE
 HV4946'OLD BRYAN POINT PIER TO THE RESIDENCE.  MARK IS 67 METERS NNE
 HV4946'FROM THE BOARD FENCE WHICH SEPARATES THE YARD OF THE
 HV4946'RESIDENCE FROM THE PASTURE.  MARK IS SET A FEW INCHES ABOVE
 HV4946'THE SURFACE, AND IS STAMPED BRYAN 2, 1928.
 HV4946'
 HV4946'REFERENCE MARK NO.1 WAS FOUND IN GOOD CONDITION.  IT IS LOCATED
 HV4946'IN THE SAME OPEN GRASSY PASTURE, ALONGSIDE THE INSHORE SIDE OF THE
 HV4946'ROAD WHICH PARALLELS THE BLUFF TOP AND LEADS FROM THE MAIN ROAD
 HV4946'TO THE RESIDENCE, AND IS SET A FEW INCHES ABOVE THE SURFACE.
 HV4946
 HV4946                          STATION RECOVERY (1958)
 HV4946
 HV4946'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV4946'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED BY
 HV4946'T.M.P. JR. IN 1928.  REFERENCE MARK 1 WAS NOT RECOVERED.  TWO NEW
 HV4946'REFERENCE MARKS WERE SET.  BOTH REFERENCE MARKS ARE STANDARD
 HV4946'BRONZE DISC SET IN TOP OF A CONCRETE MONUMENT 8 IN IN
 HV4946'DIAMETER.  THE REFERENCE MARKS ARE STAMPED BRYAN 2 NO. 2 AND
 HV4946'BRYAN 2 NO. 3
 HV4946
 HV4946                          STATION RECOVERY (1959)
 HV4946
 HV4946'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV4946'STATION RECOVERED AS DESCRIBED AND IN GOOD CONDITION.  RECOVERY
 HV4946'NOTE OF T.M.P. JR., 1938 ADEQUATE WITH THE FOLLOWING ADDITIONS.  THE
 HV4946'STATION IS NOW 36 FEET WEST OF THE CENTERLINE OF THE ROAD ALONG
 HV4946'THE BLUFF AND 4 FEET EAST OF THE EDGE OF THE BLUFF OVERLOOKING THE
 HV4946'RIVER.  MONUMENT PROJECTS 4 INCHES, IS LOCATED IN A GRASSY AREA,
 HV4946'AND IS STAMPED BRYAN 2 1928.  R.M. NO 1 WAS NOT RECOVERED AFTER
 HV4946'A SEARCH USING DISTANCES AND ANGLES.  THE AREA EAST OF THE ROAD
 HV4946'ALONG THE BLUFF IS NOW UNDER CULTIVATION SO IT IS VERY
 HV4946'PROBABLE THAT THE MARK HAS BEEN DESTROYED.  R.M.NO 2 AND
 HV4946'R.M.NO 3 WERE FOUND AS FOLLOWS.
 HV4946'
 HV4946'R.M.NO 2 IS LOCATED NORTHEAST OF THE STATION, 19 FEET EAST OF THE
 HV4946'EDGE OF THE BLUFF OVERLOOKING THE RIVER AND 13 FEET WEST OF THE
 HV4946'CENTERLINE OF THE ROAD ALONG THE BLUFF.  THE MARK,
 HV4946'PROJECTS 2 INCHES AND THE DISC IS STAMPED BRYAN 2 NO 2 1928.
 HV4946'
 HV4946'R.M.NO 3 IS LOCATED SOUTH OF THE STATION, 35 FEET EAST OF THE
 HV4946'EDGE OF THE BLUFF OVERLOOKING THE RIVER, AND 13 FEET WEST OF THE
 HV4946'CENTERLINE OF THE ROAD ALONG THE BLUFF.  THE MARK,
 HV4946'PROJECTS 3 INCHES AND THE DISC IS STAMPED BRYAN 2 NO 3 1928.
 HV4946
 HV4946                          STATION RECOVERY (1974)
 HV4946
 HV4946'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RDB)
 HV4946'STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED BY
 HV4946'T.M.P. JR. IN 1938.  REFERENCE MARK NO. 1 WAS SEARCHED FOR AND NOT
 HV4946'FOUND.  STATION IS NOW AT AN HISTORICAL COLONIAL FARM WHICH IS
 HV4946'PART OF PISCATAWAY NATIONAL PARK.
 HV4946'
 HV4946'TO REACH THE STATION BY AUTOMOBILE FROM THE INTERSECTION OF
 HV4946'HWY. 210 AND HWY. 373 NEAR ACCOKEEK, DRIVE NNW ON BRYAN POINT ROAD
 HV4946'TO ITS END ON THE EASTERN SHORE OF THE POTOMAC RIVER.  PACK
 HV4946'WESTERLY 170 PACES ALONG THE TOP OF THE RIVER BANK TO THE
 HV4946'STATION.  THE MARK PROJECTS 3 INCHES AND IS AMONG SOME BUSHES,
 HV4946'ABOUT 3.5 FT. INSHORE OF THE TOP EDGE OF THE RIVER BANK.
 HV4946'
 HV4946'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV4946'1.8 MILES SW OF FORT WASHINGTON.
 HV4946
 HV4946                          STATION RECOVERY (2004)
 HV4946
 HV4946'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV4946'THE STATION IS AT THE NATIONAL COLONIAL FARM, PISCATAWAY NATIONAL
 HV4946'PARK, PRINCE GEORGE'S COUNTY, MARYLAND.  IT IS LOCATED IN A WOODED
 HV4946'AREA 3.5 FEET SOUTH OF THE EDGE OF THE BLUFF OVERLOOKING THE POTOMAC
 HV4946'RIVER, 3.0 FEET NORTHEAST OF A FOUR BY FOUR-INCH FADED WHITE WOODEN
 HV4946'WITNESS POST THAT PROJECTS 3.0 FEET, AND IN THEW TOP OF A 10 BY
 HV4946'10-INCH CONCRETE MONUMENT THAT PROJECTS THREE INCHES.  TO REACH FROM
 HV4946'THE INTERSECTION OF BRYANT POINT ROAD AND MARYLAND ROUTE 210 (INDIAN
 HV4946'HEAD HIGHWAY) NEAR ACCOKEEK, MARYLAND, GO NORTHWEST ON BRYAN POINT
 HV4946'ROAD
 HV4946'FOR ABOUT FOUR MILES UNTIL REACHING THE NATIONAL COLONIAL FARM.  AT
 HV4946'THE FARM, FOLLOW SIGNS FOR THE STAFF ENTRANCE AND TAKE A DIRT DRIVEWAY
 HV4946'WEST-SOUTHWEST AND NORTH FOR ABOUT 0.30 MILES TO A BUILDING SIGNED AS
 HV4946'OFFICE.  FROM THE FARM OFFICE, PACK NORTHEAST ON A DIRT
 HV4946'ROAD FOR ABOUT 125 YARDS TO A FENCED AREA SIGNED AS THE MUSEUM GARDEN
 HV4946'AND PACK NORTH AN ADDITIONAL 30 YARDS TO THE NORTHEAST CORNER OF THE
 HV4946'GARDEN.  CONTINUE NORTHEAST AND EAST ON A DIM TRAIL FOR 210 FEET TO AN
 HV4946'INTERPRETIVE SIGN ON THE RIGHT (SOUTH) SIDE OF THE TRAIL.
 HV4946'CONTINUE EAST FOR 55 FEET AND LEAVE THE TRAIL AND PACK NORTH FOR 35
 HV4946'FEET TO THE EDGE OF THE BLUFF AND THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4950 ***********************************************************************
 HV4950  DESIGNATION -  BRYAN PT END OF DOCK
 HV4950  PID         -  HV4950
 HV4950  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4950  COUNTRY     -  US
 HV4950  USGS QUAD   -  MOUNT VERNON (2019)
 HV4950
 HV4950                         *CURRENT SURVEY CONTROL
 HV4950  ______________________________________________________________________
 HV4950* NAD 83(1993) POSITION- 38 41 46.63056(N) 077 04 00.32768(W)   ADJUSTED
 HV4950  ______________________________________________________________________
 HV4950  GEOID HEIGHT    -        -32.425 (meters)                     GEOID18
 HV4950  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 HV4950  HORZ ORDER      -  THIRD
 HV4950
 HV4950.The horizontal coordinates were established by classical geodetic methods
 HV4950.and adjusted by the National Geodetic Survey in November 1994.
 HV4950
 HV4950.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4950.GEOID18 height accuracy estimate available here.
 HV4950
 HV4950.Click photographs - Photos may exist for this station.
 HV4950
 HV4950.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4950
 HV4950. The following values were computed from the NAD 83(1993) position.
 HV4950
 HV4950;                    North         East     Units Scale Factor Converg.
 HV4950;SPC MD       -   114,293.932   394,192.644   MT  0.99995473   -0 02 30.8
 HV4950;SPC MD       -   374,979.34  1,293,280.37   sFT  0.99995473   -0 02 30.8
 HV4950;SPC VA N     - 2,115,259.844 3,624,674.274   MT  0.99994933   +0 53 40.2
 HV4950;SPC VA N     - 6,939,815.00 11,891,952.18   sFT  0.99994933   +0 53 40.2
 HV4950;UTM  18      - 4,285,101.188   320,264.666   MT  0.99999782   -1 17 32.9
 HV4950
 HV4950_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2026485101(NAD 83)
 HV4950
 HV4950                          SUPERSEDED SURVEY CONTROL
 HV4950
 HV4950  NAD 83(1991)-  38 41 46.62845(N)    077 04 00.33021(W) AD(       ) 3
 HV4950  NAD 83(1986)-  38 41 46.63015(N)    077 04 00.34239(W) AD(       ) 3
 HV4950  NAD 27      -  38 41 46.21000(N)    077 04 01.42700(W) AD(       ) 3
 HV4950
 HV4950.Superseded values are not recommended for survey control.
 HV4950
 HV4950.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4950.See file dsdata.pdf to determine how the superseded data were derived.
 HV4950
 HV4950
 HV4950  HISTORY     - Date     Condition        Report By
 HV4950  HISTORY     - 1928     MONUMENTED       CGS
 HV4950  HISTORY     - 1938     GOOD             CGS
 HV4950
 HV4950                          STATION DESCRIPTION
 HV4950
 HV4950'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV4950'CENTER OF OUTER END OF DOCK APPEARS TO HAVE BEEN THE POINT
 HV4950'LOCATED.  THIS POINT, USED AS CONTROL FOR TOPOGRAPHIC SURVEY,
 HV4950'CHECKED NEARBY TRIANGULATION STATIONS WITHIN PLOTTABLE DISTANCE ON
 HV4950'1--10,000 SCALE.  THE DOCK IS NOW IN RUINS BUT ITS OUTLINE CAN
 HV4950'STILL BE DISCERNED FROM THE PILE REMAINS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4953 ***********************************************************************
 HV4953  DESIGNATION -  BRYAN PT VANE ON WHITE HOUSE
 HV4953  PID         -  HV4953
 HV4953  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4953  COUNTRY     -  US
 HV4953  USGS QUAD   -  MOUNT VERNON (2019)
 HV4953
 HV4953                         *CURRENT SURVEY CONTROL
 HV4953  ______________________________________________________________________
 HV4953* NAD 83(1993) POSITION- 38 41 40.35278(N) 077 04 09.90220(W)   ADJUSTED
 HV4953  ______________________________________________________________________
 HV4953  GEOID HEIGHT    -        -32.425 (meters)                     GEOID18
 HV4953  LAPLACE CORR    -         -1.96  (seconds)                    DEFLEC18
 HV4953  HORZ ORDER      -  THIRD
 HV4953
 HV4953.The horizontal coordinates were established by classical geodetic methods
 HV4953.and adjusted by the National Geodetic Survey in November 1994.
 HV4953
 HV4953.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4953.GEOID18 height accuracy estimate available here.
 HV4953
 HV4953.Click photographs - Photos may exist for this station.
 HV4953
 HV4953.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4953
 HV4953. The following values were computed from the NAD 83(1993) position.
 HV4953
 HV4953;                    North         East     Units Scale Factor Converg.
 HV4953;SPC MD       -   114,100.532   393,961.135   MT  0.99995483   -0 02 36.8
 HV4953;SPC MD       -   374,344.83  1,292,520.82   sFT  0.99995483   -0 02 36.8
 HV4953;SPC VA N     - 2,115,062.687 3,624,445.958   MT  0.99994929   +0 53 34.3
 HV4953;SPC VA N     - 6,939,168.17 11,891,203.11   sFT  0.99994929   +0 53 34.3
 HV4953;UTM  18      - 4,284,912.878   320,028.981   MT  0.99999887   -1 17 38.7
 HV4953
 HV4953_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2002884912(NAD 83)
 HV4953
 HV4953                          SUPERSEDED SURVEY CONTROL
 HV4953
 HV4953  NAD 83(1991)-  38 41 40.35067(N)    077 04 09.90477(W) AD(       ) 3
 HV4953  NAD 83(1986)-  38 41 40.35230(N)    077 04 09.91697(W) AD(       ) 3
 HV4953  NAD 27      -  38 41 39.93200(N)    077 04 11.00100(W) AD(       ) 3
 HV4953
 HV4953.Superseded values are not recommended for survey control.
 HV4953
 HV4953.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4953.See file dsdata.pdf to determine how the superseded data were derived.
 HV4953
 HV4953
 HV4953  HISTORY     - Date     Condition        Report By
 HV4953  HISTORY     - 1928     MONUMENTED       CGS
 HV4953  HISTORY     - 1938     MARK NOT FOUND   CGS
 HV4953
 HV4953                          STATION DESCRIPTION
 HV4953
 HV4953'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV4953'STATION IS LOST.  HOUSE STILL STANDING BUT NO VANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4979 ***********************************************************************
 HV4979  DESIGNATION -  BRYANS ROAD MICROWAVE
 HV4979  PID         -  HV4979
 HV4979  STATE/COUNTY-  MD/CHARLES
 HV4979  COUNTRY     -  US
 HV4979  USGS QUAD   -  MOUNT VERNON (2019)
 HV4979
 HV4979                         *CURRENT SURVEY CONTROL
 HV4979  ______________________________________________________________________
 HV4979* NAD 83(1993) POSITION- 38 38 32.26133(N) 077 04 06.22161(W)   ADJUSTED
 HV4979  ______________________________________________________________________
 HV4979  GEOID HEIGHT    -        -32.527 (meters)                     GEOID18
 HV4979  LAPLACE CORR    -         -2.03  (seconds)                    DEFLEC18
 HV4979  HORZ ORDER      -  THIRD
 HV4979
 HV4979.The horizontal coordinates were established by classical geodetic methods
 HV4979.and adjusted by the National Geodetic Survey in November 1994.
 HV4979
 HV4979.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4979.GEOID18 height accuracy estimate available here.
 HV4979
 HV4979.Click photographs - Photos may exist for this station.
 HV4979
 HV4979.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4979
 HV4979. The following values were computed from the NAD 83(1993) position.
 HV4979
 HV4979;                    North         East     Units Scale Factor Converg.
 HV4979;SPC MD       -   108,300.754   394,045.731   MT  0.99995811   -0 02 34.5
 HV4979;SPC MD       -   355,316.72  1,292,798.37   sFT  0.99995811   -0 02 34.5
 HV4979;UTM  18      - 4,279,112.388   319,987.056   MT  0.99999906   -1 17 31.1
 HV4979
 HV4979_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1998779112(NAD 83)
 HV4979
 HV4979                          SUPERSEDED SURVEY CONTROL
 HV4979
 HV4979  NAD 83(1991)-  38 38 32.26051(N)    077 04 06.22229(W) AD(       ) 3
 HV4979  NAD 83(1986)-  38 38 32.26198(N)    077 04 06.23594(W) AD(       ) 3
 HV4979  NAD 27      -  38 38 31.84509(N)    077 04 07.31788(W) AD(       ) 3
 HV4979
 HV4979.Superseded values are not recommended for survey control.
 HV4979
 HV4979.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4979.See file dsdata.pdf to determine how the superseded data were derived.
 HV4979
 HV4979_MARKER: 45 = MICROWAVE TOWER
 HV4979
 HV4979  HISTORY     - Date     Condition        Report By
 HV4979  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV4979
 HV4979                          STATION DESCRIPTION
 HV4979
 HV4979'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV4979'THE STATION IS THE RED LIGHT MOUNTED AT THE TOP OF THE BRYANS
 HV4979'ROAD MICROWAVE KGI 68.  IT IS ON TOP OF A 4 LEGGED STEEL TOWER
 HV4979'OWNED BY THE BELL TELEPHONE SYSTEMS THAT HAS AN OVERALL HEIGHT
 HV4979'OF ABOUT 180 FEET.
 HV4979'
 HV4979'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 210
 HV4979'AND MARSHALL HALL ROAD IN THE TOWN OF BRYANS ROAD, GO NORTHWEST
 HV4979'ON MARSHALL HALL ROAD FOR 1.1 MILES TO A SIDE ROAD RIGHT.  TURN
 HV4979'RIGHT AND GO NORTHEAST FOR 0.3 MILE TO THE STATION ON THE LEFT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6944 ***********************************************************************
 JV6944  DESIGNATION -  BRYANT
 JV6944  PID         -  JV6944
 JV6944  STATE/COUNTY-  MD/HARFORD
 JV6944  COUNTRY     -  US
 JV6944  USGS QUAD   -  EDGEWOOD (2016)
 JV6944
 JV6944                         *CURRENT SURVEY CONTROL
 JV6944  ______________________________________________________________________
 JV6944* NAD 83(2011) POSITION- 39 29 04.07406(N) 076 15 06.55199(W)   ADJUSTED
 JV6944* NAD 83(2011) ELLIP HT-    12.691 (meters)        (06/27/12)   ADJUSTED
 JV6944* NAD 83(2011) EPOCH   -  2010.00
 JV6944* NAVD 88 ORTHO HEIGHT -    45.726 (meters)      150.02  (feet) ADJUSTED
 JV6944  ______________________________________________________________________
 JV6944  GEOID HEIGHT    -        -33.064 (meters)                     GEOID18
 JV6944  NAD 83(2011) X  -  1,171,475.970 (meters)                     COMP
 JV6944  NAD 83(2011) Y  - -4,788,085.914 (meters)                     COMP
 JV6944  NAD 83(2011) Z  -  4,033,980.566 (meters)                     COMP
 JV6944  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 JV6944  DYNAMIC HEIGHT  -         45.703 (meters)      149.94  (feet) COMP
 JV6944  MODELED GRAVITY -    980,114.5   (mgal)                       NAVD 88
 JV6944
 JV6944  VERT ORDER      -  SECOND    CLASS I
 JV6944
 JV6944  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6944  Standards:
 JV6944         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6944            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6944  -------------------------------------------------------------------
 JV6944  NETWORK    1.03   1.57           0.45   0.39   0.80      0.11468825
 JV6944  -------------------------------------------------------------------
 JV6944  Click here for local accuracies and other accuracy information.
 JV6944
 JV6944.The horizontal coordinates were established by GPS observations
 JV6944.and adjusted by the National Geodetic Survey in June 2012.
 JV6944
 JV6944.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6944.been affixed to the stable North American tectonic plate. See 
 JV6944.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6944
 JV6944.The horizontal coordinates are valid at the epoch date displayed above
 JV6944.which is a decimal equivalence of Year/Month/Day.
 JV6944
 JV6944.The orthometric height was determined by differential leveling and
 JV6944.adjusted by the NATIONAL GEODETIC SURVEY
 JV6944.in June 1995.
 JV6944
 JV6944.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6944.GEOID18 height accuracy estimate available here.
 JV6944
 JV6944.Click photographs - Photos may exist for this station.
 JV6944
 JV6944.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6944
 JV6944.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6944
 JV6944.The ellipsoidal height was determined by GPS observations
 JV6944.and is referenced to NAD 83.
 JV6944
 JV6944.The dynamic height is computed by dividing the NAVD 88
 JV6944.geopotential number by the normal gravity value computed on the
 JV6944.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6944.degrees latitude (g = 980.6199 gals.).
 JV6944
 JV6944.The modeled gravity was interpolated from observed gravity values.
 JV6944
 JV6944. The following values were computed from the NAD 83(2011) position.
 JV6944
 JV6944;                    North         East     Units Scale Factor Converg.
 JV6944;SPC MD       -   202,053.900   464,367.523   MT  1.00000621   +0 28 10.5
 JV6944;SPC MD       -   662,905.17  1,523,512.45   sFT  1.00000621   +0 28 10.5
 JV6944;UTM  18      - 4,371,288.309   392,344.136   MT  0.99974269   -0 47 45.9
 JV6944
 JV6944!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6944!SPC MD       -   0.99999801  x   1.00000621  =   1.00000422
 JV6944!UTM  18      -   0.99999801  x   0.99974269  =   0.99974070
 JV6944
 JV6944_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9234471288(NAD 83)
 JV6944
 JV6944                          SUPERSEDED SURVEY CONTROL
 JV6944
 JV6944  NAD 83(2007)-  39 29 04.07421(N)    076 15 06.55272(W) AD(2002.00) 0
 JV6944  ELLIP H (02/10/07)   12.711  (m)                       GP(2002.00)    
 JV6944  ELLIP H (08/30/02)   12.706  (m)                       GP(       ) 4 2
 JV6944  NAD 83(1991)-  39 29 04.07401(N)    076 15 06.55282(W) AD(       ) 1
 JV6944  ELLIP H (09/15/92)   12.685  (m)                       GP(       ) 4 1
 JV6944  NGVD 29 (09/15/92)   46.1    (m)  GEOID90  model used  GPS OBS        
 JV6944
 JV6944.Superseded values are not recommended for survey control.
 JV6944
 JV6944.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6944.See file dsdata.pdf to determine how the superseded data were derived.
 JV6944
 JV6944_MARKER: DD = SURVEY DISK
 JV6944_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6944_STAMPING: BRYANT 1991
 JV6944_MARK LOGO: MDSHA
 JV6944_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6944_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6944+STABILITY: SURFACE MOTION
 JV6944_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6944+SATELLITE: SATELLITE OBSERVATIONS - 1991
 JV6944
 JV6944  HISTORY     - Date     Condition        Report By
 JV6944  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6944  HISTORY     - 20020218 MARK NOT FOUND   GEOMET
 JV6944
 JV6944                          STATION DESCRIPTION
 JV6944
 JV6944'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6944'THE MARKER IS LOCATED ABOUT 19.5 MI (31.4 KM) NORTHEAST OF BALTIMORE,
 JV6944'5.8 MI (9.3 KM) SOUTHEAST OF BEL AIR AND ALONG MARYLAND HIGHWAY 543.
 JV6944'IT IS ON ROADWAY RIGHT-OF-WAY.  TO REACH THE STATION FROM THE
 JV6944'INTERSECTION OF STATE HIGHWAY 543 AND STATE HIGHWAY 136, GO EAST ON
 JV6944'STATE HIGHWAY 543 1.9 MI (3.1 KM) TO A BRIDGE OVER INTERSTATE HIGHWAY
 JV6944'95 AND THE STATION ON THE RIGHT, A MARYLAND STATE HIGHWAY
 JV6944'ADMINISTRATION SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND
 JV6944'CONCRETE MONUMENT WHICH IS FLUSH WITH SURFACE OF THE GROUND.  IT IS
 JV6944'6.5 FT (2.0 M) SOUTHWEST OF A GUARD RAIL, 16.5 FT (5.0 M) WEST OF THE
 JV6944'SOUTHWEST CORNER OF THE BRIDGE FOR STATE HIGHWAY 543 OVER INTERSTATE
 JV6944'HIGHWAY 95 AND 11.7 FT (3.6 M) NORTH-NORTHWEST OF A ELECTRIC MANHOLE
 JV6944'COVER.
 JV6944
 JV6944                          STATION RECOVERY (2002)
 JV6944
 JV6944'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2002 (FJJ)
 JV6944'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4945 ***********************************************************************
 HV4945  DESIGNATION -  BRYANTS POINT 1901
 HV4945  PID         -  HV4945
 HV4945  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4945  COUNTRY     -  US
 HV4945  USGS QUAD   -  MOUNT VERNON (2019)
 HV4945
 HV4945                         *CURRENT SURVEY CONTROL
 HV4945  ______________________________________________________________________
 HV4945* NAD 83(1993) POSITION- 38 41 43.40450(N) 077 04 05.94607(W)   ADJUSTED
 HV4945* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV4945  ______________________________________________________________________
 HV4945  GEOID HEIGHT    -        -32.425 (meters)                     GEOID18
 HV4945  LAPLACE CORR    -         -1.98  (seconds)                    DEFLEC18
 HV4945  HORZ ORDER      -  THIRD
 HV4945
 HV4945.The horizontal coordinates were established by classical geodetic methods
 HV4945.and adjusted by the National Geodetic Survey in November 1994.
 HV4945
 HV4945.The orthometric height was scaled from a topographic map.
 HV4945
 HV4945.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4945.GEOID18 height accuracy estimate available here.
 HV4945
 HV4945.Click photographs - Photos may exist for this station.
 HV4945
 HV4945.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4945
 HV4945. The following values were computed from the NAD 83(1993) position.
 HV4945
 HV4945;                    North         East     Units Scale Factor Converg.
 HV4945;SPC MD       -   114,194.558   394,056.805   MT  0.99995478   -0 02 34.4
 HV4945;SPC MD       -   374,653.31  1,292,834.70   sFT  0.99995478   -0 02 34.4
 HV4945;SPC VA N     - 2,115,158.264 3,624,540.078   MT  0.99994931   +0 53 36.7
 HV4945;SPC VA N     - 6,939,481.74 11,891,511.91   sFT  0.99994931   +0 53 36.7
 HV4945;UTM  18      - 4,285,004.798   320,126.684   MT  0.99999844   -1 17 36.3
 HV4945
 HV4945!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4945!SPC MD       -   1.00000419  x   0.99995478  =   0.99995897
 HV4945!SPC VA N     -   1.00000419  x   0.99994931  =   0.99995350
 HV4945!UTM  18      -   1.00000419  x   0.99999844  =   1.00000263
 HV4945
 HV4945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2012685004(NAD 83)
 HV4945
 HV4945                          SUPERSEDED SURVEY CONTROL
 HV4945
 HV4945  NAD 83(1991)-  38 41 43.40245(N)    077 04 05.94864(W) AD(       ) 3
 HV4945  NAD 83(1986)-  38 41 43.40410(N)    077 04 05.96033(W) AD(       ) 3
 HV4945  NAD 27      -  38 41 43.00500(N)    077 04 07.03700(W) AD(       ) 3
 HV4945  USSD        -  38 41 43.33500(N)    077 04 06.84200(W) AD(       ) 3
 HV4945
 HV4945.Superseded values are not recommended for survey control.
 HV4945
 HV4945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4945.See file dsdata.pdf to determine how the superseded data were derived.
 HV4945
 HV4945
 HV4945  HISTORY     - Date     Condition        Report By
 HV4945  HISTORY     - 1901     MONUMENTED       CGS
 HV4945  HISTORY     - 1924     GOOD             CGS
 HV4945  HISTORY     - 1928     MARK NOT FOUND   CGS
 HV4945
 HV4945                          STATION DESCRIPTION
 HV4945
 HV4945'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 HV4945'STATION IS ON EASTERN SIDE OF POTOMAC RIVER, ON EXTREME END OF
 HV4945'BRYANTS POINT, AND JUST S OF FISH COMMISSION BUILDINGS.
 HV4945'
 HV4945'UNDERGROUND MARK IS A 3-INCH TERRA-COTTA PIPE SET IN CEMENT, WITH
 HV4945'TOP 10 INCHES BELOW SURFACE.
 HV4945'
 HV4945'SURFACE MARK IS SHORT PIECE OF 3-INCH TERRA-COTTA PIPE SET IN
 HV4945'CEMENT, FLANGE DOWN.
 HV4945'
 HV4945'REFERENCE MARK IS SIMILAR PIPE, 12.60 METERS (41.3 FEET) FROM
 HV4945'THE STATION, IN AZIMUTH 353 DEG 18 MIN.  IN 1924 THE REFERENCE
 HV4945'MARK WAS RECOVERED AND DESCRIBED AS BEING 3 FEET OUT FROM FENCE
 HV4945'PARALLEL WITH HIGH-WATER LINE, 85 FEET BELOW FENCE PERPENDICULAR
 HV4945'TO HIGH-WATER LINE, 55 FEET IN FROM HIGH-WATER LINE, AND ABOUT
 HV4945'480 FEET BELOW SMALL WHARF.
 HV4945
 HV4945                          STATION RECOVERY (1928)
 HV4945
 HV4945'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4945'SEARCH OF SEVERAL HOURS WAS MADE FOR BOTH STATION MARK AND REFERENCE
 HV4945'MARK AS DESCRIBED IN PUBLICATION 114 USING DISTANCES AND DIRECTIONS
 HV4945'GIVEN BUT NO MARKS WERE FOUND.  WORKERS ON THIS LAND HAD A
 HV4945'VAGUE IDEAS OF PLOWING UP SOME KIND OF CONCRETE MARK ABOUT 4 YEARS
 HV4945'BACK AND THE GROWTH OF GRASS AND WEEDS WERE REMOVED IN REPORTED
 HV4945'PLACES WHERE MARKS MIGHT HAVE BEEN WITH NO SUCCESS.  RECOMMENDED
 HV4945'THAT THESE MARKS ESTABLISHED IN 1901 BE REPORTED AS LOST.  ONE
 HV4945'STATION MARK AND ONE REFERENCE MARK ESTABLISHED AT THIS
 HV4945'LOCALITY AS DESCRIBED IN DESCRIPTION OF TRIANGULATION FORM
 HV4945'ACCOMPANYING THIS WORK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DE9121 ***********************************************************************
 DE9121  DESIGNATION -  BUBBA
 DE9121  PID         -  DE9121
 DE9121  STATE/COUNTY-  MD/SOMERSET
 DE9121  COUNTRY     -  US
 DE9121  USGS QUAD   -  MARION (2016)
 DE9121
 DE9121                         *CURRENT SURVEY CONTROL
 DE9121  ______________________________________________________________________
 DE9121* NAD 83(2011) POSITION- 38 01 19.34881(N) 075 49 49.18237(W)   ADJUSTED
 DE9121* NAD 83(2011) ELLIP HT-   -35.614 (meters)        (02/16/16)   ADJUSTED
 DE9121* NAD 83(2011) EPOCH   -  2010.00
 DE9121* NAVD 88 ORTHO HEIGHT -     0.425 (meters)        1.39  (feet) ADJUSTED
 DE9121  ______________________________________________________________________
 DE9121  GEOID HEIGHT    -        -36.061 (meters)                     GEOID18
 DE9121  NAD 83(2011) X  -  1,231,533.806 (meters)                     COMP
 DE9121  NAD 83(2011) Y  - -4,877,830.016 (meters)                     COMP
 DE9121  NAD 83(2011) Z  -  3,907,349.622 (meters)                     COMP
 DE9121  LAPLACE CORR    -         -1.72  (seconds)                    DEFLEC18
 DE9121  DYNAMIC HEIGHT  -          0.425 (meters)        1.39  (feet) COMP
 DE9121  MODELED GRAVITY -    979,975.9   (mgal)                       NAVD 88
 DE9121
 DE9121  VERT ORDER      -  SECOND    CLASS I
 DE9121
 DE9121  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DE9121  Standards:
 DE9121         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DE9121            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DE9121  -------------------------------------------------------------------
 DE9121  NETWORK    0.73   1.65           0.32   0.26   0.84     -0.28599455
 DE9121  -------------------------------------------------------------------
 DE9121  Click here for local accuracies and other accuracy information.
 DE9121
 DE9121.The horizontal coordinates were established by GPS observations
 DE9121.and adjusted by the ARCHER-SHEE LAND SURVEYING in February 2016.
 DE9121
 DE9121.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DE9121.been affixed to the stable North American tectonic plate. See 
 DE9121.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DE9121
 DE9121.The horizontal coordinates are valid at the epoch date displayed above
 DE9121.which is a decimal equivalence of Year/Month/Day.
 DE9121
 DE9121.The orthometric height was determined by differential leveling and
 DE9121.adjusted by the NATIONAL GEODETIC SURVEY
 DE9121.in February 2003.
 DE9121
 DE9121.Significant digits in the geoid height do not necessarily reflect accuracy.
 DE9121.GEOID18 height accuracy estimate available here.
 DE9121
 DE9121.Click photographs - Photos may exist for this station.
 DE9121
 DE9121.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DE9121
 DE9121.The Laplace correction was computed from DEFLEC18 derived deflections.
 DE9121
 DE9121.The ellipsoidal height was determined by GPS observations
 DE9121.and is referenced to NAD 83.
 DE9121
 DE9121.The dynamic height is computed by dividing the NAVD 88
 DE9121.geopotential number by the normal gravity value computed on the
 DE9121.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DE9121.degrees latitude (g = 980.6199 gals.).
 DE9121
 DE9121.The modeled gravity was interpolated from observed gravity values.
 DE9121
 DE9121. The following values were computed from the NAD 83(2011) position.
 DE9121
 DE9121;                    North         East     Units Scale Factor Converg.
 DE9121;SPC MD       -    40,106.711   502,707.724   MT  1.00005997   +0 44 02.9
 DE9121;SPC MD       -   131,583.43  1,649,300.26   sFT  1.00005997   +0 44 02.9
 DE9121;UTM  18      - 4,208,585.850   427,120.585   MT  0.99966542   -0 30 41.3
 DE9121
 DE9121!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DE9121!SPC MD       -   1.00000559  x   1.00005997  =   1.00006556
 DE9121!UTM  18      -   1.00000559  x   0.99966542  =   0.99967101
 DE9121
 DE9121_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2712008585(NAD 83)
 DE9121
 DE9121                          SUPERSEDED SURVEY CONTROL
 DE9121
 DE9121.No superseded survey control is available for this station.
 DE9121
 DE9121_MARKER: F = FLANGE-ENCASED ROD
 DE9121_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DE9121_STAMPING: BUBBA 2002
 DE9121_MARK LOGO: NGS
 DE9121_PROJECTION: FLUSH
 DE9121_MAGNETIC: N = NO MAGNETIC MATERIAL
 DE9121_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DE9121_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DE9121+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2015
 DE9121_ROD/PIPE-DEPTH: 20.3 meters
 DE9121_SLEEVE-DEPTH  : 0.9 meters
 DE9121
 DE9121  HISTORY     - Date     Condition        Report By
 DE9121  HISTORY     - 2002     MONUMENTED       NGS
 DE9121  HISTORY     - 20051026 GOOD             NGS
 DE9121  HISTORY     - 20150514 GOOD             ARCSHE
 DE9121
 DE9121                          STATION DESCRIPTION
 DE9121
 DE9121'DESCRIBED BY NATIONAL GEODETIC SURVEY 2002 (DBC)
 DE9121'TO REACH THE STATION FROM THE INTERSECTIONS OF MARYLAND
 DE9121'AVENUE/RICHARDSON AVENUE (US HIGHWAY 413) SOMERSET AVENUE AND
 DE9121'JACKSONVILLE ROAD NEAR THE CITY WATER TANK IN CRISFIELD.  GO 1.95
 DE9121'MILES (3.14 KM) NORTHEASTERLY ALONG JACKSONVILLE ROAD TO THE JUNCTION
 DE9121'OF CHARLES BRIDDELL DRIVE/AVIATORS WAY (ENTRANCE ROAD TO THE
 DE9121'CRISFIELD-SOMERSET COUNTY AIRPORT) ON THE LEFT, TURN LEFT NORTHERLY ON
 DE9121'THE AIRPORT ENTRANCE ROAD FOR 0.25 MILES (0.40 KM) TO THE AIRPORT
 DE9121'TERMINAL BUILDING STRAIGHT AHEAD AND THE FUEL FARM ON THE LEFT, BEAR
 DE9121'LEFT THEN RIGHT AROUND THE FUEL FARM TO THE FRONT OF THE TERMINAL
 DE9121'BUILDING TO THE JUNCTION OF A TAXIWAY LEADING NORTHEAST TO THE RUNWAY
 DE9121'GO NORTHEAST ON THE TAXIWAY FOR 0.05 MILES (0.08 KM) TO THE JUNCTION
 DE9121'OF THE RUNWAY, TURN LEFT NORTHWEST ON THE RUNWAY FOR 0.6 MILES (1.0
 DE9121'KM) TO THE END OF RUNWAY 14, BEAR RIGHT NORTHERLY ON TO AN OPEN FIELD
 DE9121'FOR 1.0 MILE (1.6 KM) TO THE STATION NEAR THE T-JUNCTION OF TWO TIDAL
 DE9121'DITCHES.  THE STATION IS THE TOP OF AN NGS STAINLESS STEEL ROD DRIVEN
 DE9121'TO REFUSAL ENCASED IN A 5 INCH PVC PIPE WITH AN ALUMINUM NGS LOGO CAP
 DE9121'ABOUT FLUSH WITH THE GROUND.  LOCATED 14.0 FEET (4.3 M) SOUTHWEST OF
 DE9121'THE SOUTHWEST EDGE OF A TIDAL DITCH, 21.0 FEET (6.4 M) SOUTHEAST OF
 DE9121'THE SOUTHEAST EDGE OF A TIDAL DITCH AND 1.3 FEET (0.4 M) SOUTHEAST OF
 DE9121'AN NGS FIBERGLASS WITNESS POST. NOTE--ACCESS TO THE DATUM POINT IS
 DE9121'THROUGH A 5-INCH LOGO CAP.  THE SLEEVE DEPTH DOES NOT MEET THE
 DE9121'SPECIFICATIONS FOR A CLASS A MARK.
 DE9121
 DE9121                          STATION RECOVERY (2005)
 DE9121
 DE9121'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DE9121'RECOVERED AS DESCRIBED.
 DE9121
 DE9121                          STATION RECOVERY (2015)
 DE9121
 DE9121'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 DE9121'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4910 ***********************************************************************
 JV4910  DESIGNATION -  BUCK
 JV4910  PID         -  JV4910
 JV4910  STATE/COUNTY-  MD/KENT
 JV4910  COUNTRY     -  US
 JV4910  USGS QUAD   -  HANESVILLE (2016)
 JV4910
 JV4910                         *CURRENT SURVEY CONTROL
 JV4910  ______________________________________________________________________
 JV4910* NAD 83(1991) POSITION- 39 15 43.31256(N) 076 10 23.56862(W)   ADJUSTED
 JV4910* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV4910  ______________________________________________________________________
 JV4910  GEOID HEIGHT    -        -33.275 (meters)                     GEOID18
 JV4910  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 JV4910  HORZ ORDER      -  THIRD
 JV4910
 JV4910.The horizontal coordinates were established by classical geodetic methods
 JV4910.and adjusted by the National Geodetic Survey in January 1992.
 JV4910
 JV4910.The orthometric height was scaled from a topographic map.
 JV4910
 JV4910.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4910.GEOID18 height accuracy estimate available here.
 JV4910
 JV4910.Click photographs - Photos may exist for this station.
 JV4910
 JV4910.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4910
 JV4910. The following values were computed from the NAD 83(1991) position.
 JV4910
 JV4910;                    North         East     Units Scale Factor Converg.
 JV4910;SPC MD       -   177,418.367   471,353.686   MT  0.99997252   +0 31 08.1
 JV4910;SPC MD       -   582,080.09  1,546,432.88   sFT  0.99997252   +0 31 08.1
 JV4910;UTM  18      - 4,346,511.005   398,783.731   MT  0.99972614   -0 44 33.2
 JV4910
 JV4910!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4910!SPC MD       -   1.00000385  x   0.99997252  =   0.99997637
 JV4910!UTM  18      -   1.00000385  x   0.99972614  =   0.99972999
 JV4910
 JV4910:                Primary Azimuth Mark                     Grid Az
 JV4910:SPC MD       -  LEE                                      203 13 10.9
 JV4910:UTM  18      -  LEE                                      204 28 52.2
 JV4910
 JV4910_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9878346511(NAD 83)
 JV4910
 JV4910|---------------------------------------------------------------------|
 JV4910| PID    Reference Object                     Distance      Geod. Az  |
 JV4910|                                                           dddmmss.s |
 JV4910| JV5105 LEE                                 APPROX. 4.1 KM 2034419.0 |
 JV4910| CB1029 BUCK RM 1                           123.420 METERS 26300     |
 JV4910| CB1030 BUCK RM 2                            96.093 METERS 33106     |
 JV4910|---------------------------------------------------------------------|
 JV4910
 JV4910                          SUPERSEDED SURVEY CONTROL
 JV4910
 JV4910  NAD 83(1986)-  39 15 43.30585(N)    076 10 23.57723(W) AD(       ) 3
 JV4910  NAD 27      -  39 15 42.91000(N)    076 10 24.75200(W) AD(       ) 3
 JV4910
 JV4910.Superseded values are not recommended for survey control.
 JV4910
 JV4910.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4910.See file dsdata.pdf to determine how the superseded data were derived.
 JV4910
 JV4910_MARKER: DS = TRIANGULATION STATION DISK
 JV4910_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4910_STAMPING: BUCK 1935
 JV4910_MARK LOGO: CGS
 JV4910_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4910+STABILITY: SURFACE MOTION
 JV4910
 JV4910  HISTORY     - Date     Condition        Report By
 JV4910  HISTORY     - 1935     MONUMENTED       CGS
 JV4910  HISTORY     - 1939     GOOD             CGS
 JV4910  HISTORY     - 20060121 MARK NOT FOUND   USPSQD
 JV4910
 JV4910                          STATION DESCRIPTION
 JV4910
 JV4910'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JCP)
 JV4910'STATION BUCK IS ON THE W SHORE OF EASTERN SHORE, ABOUT 1.5 MILES
 JV4910'INLAND AND ON THE FARM PROPERTY OF JOHN A. REDDING KNOWN AS THE
 JV4910'HOLIDAY FARM ON COREYS CROSS ROAD.  STATION IS IN A FIELD NW OF
 JV4910'FARMHOUSE AND THE FIELD IS AT THE JUNCTION OF THE ROAD TO
 JV4910'TRI-STATE YACHT CLUB RUNNING FROM MELITOTA TO HANDY POINT AND THE
 JV4910'LANE TO MR. ROGERS FARM, THIS LANE BEING MARKED BY A LARGE OAK
 JV4910'ON LEFT SIDE OF ROAD.  STATION IS ABOUT 295.24 FEET E OF N-S
 JV4910'FENCE LINE SEPARATING MR. REDDINGS FARM FROM FARM TENANTED BY
 JV4910'E.H. DULIN AND OWNED BY HINSON ROGERS, MEASURED AT RIGHT ANGLES
 JV4910'TO FENCE LINE, PLACE OF MEASUREMENT BEING 174.5 FEET S OF
 JV4910'INTERSECTION OF ROAD EXTENDED TO FENCE LINE.  IT IS 679.2 FEET
 JV4910'S OF EDGE OF LARGE OAK TREE AT ENTRANCE TO LANE OF ROGERS FARM,
 JV4910'AND 1252.2 FEET FROM GREY BARN WITH RED TIN ROOF ON MR. REDDINGS
 JV4910'FARM.
 JV4910'
 JV4910'STATION MARKD, BY A STANDARD SUBSURFACE
 JV4910'MONUMENT 3.5 FEET BELOW SURFACE AND STANDARD SURFACE MARK MARKED
 JV4910'1.5 FEET BELOW SURFACE-- BOTH MARKED
 JV4910'BUCK 1935.
 JV4910'
 JV4910'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE AS
 JV4910'DESCRIBED IN .
 JV4910'
 JV4910'REFERENCE MARK NO.1 AND REFERENCE MARK NO.2 BOTH LIE JUST WITHIN
 JV4910'THE N-S FENCE LINE SEPARATING THE REDDING AND ROGERS FARMS.
 JV4910'
 JV4910'REFERENCE MARK NO.2 IS 57.8 FEET S OF INTERSECTION OF EXTENSION
 JV4910'OF ROAD TO FENCE LINE AND REFERENCE MARK NO.1 IS 409.785 FEET S
 JV4910'OF REFERENCE MARK NO.2.  REFERENCE MARKS ARE MARKED BUCK R.M. NO.1
 JV4910'1935 AND BUCK R.M. NO.2 1935.
 JV4910'
 JV4910'STATION BUCK MAY BE REACHED BY PROCEEDING N ON 9-FOOT CONCRETE
 JV4910'ROAD FROM FAIRLEE, MARYLAND, FOR 0.5 MILE TO FORK.  BEAR LEFT ON
 JV4910'DIRT ROAD FOR 2.2 MILES TO LANE LEADING TO REDDING FARM.  TURN LEFT
 JV4910'TO AND THROUGH FARMYARD PROCEEDING INTO FIELD AND TO STATION.
 JV4910'BEAR RIGHT BEYOND FIRST BARN.
 JV4910'
 JV4910'HEIGHT OF LIGHT ABOVE STATION MARK 25 METERS.
 JV4910
 JV4910                          STATION RECOVERY (1939)
 JV4910
 JV4910'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4910'REFERENCE MARK NO.1 AND REFERENCE MARK NO.2 RECOVERED AS DESCRIBED
 JV4910'BY J.C. PARTINGTON IN 1935.  STATION MARK (UNDERGROUND) NOT DUG
 JV4910'FOR DUE TO CULTIVATION.
 JV4910'
 JV4910'DESCRIPTION ADEQUATE.
 JV4910
 JV4910                          STATION RECOVERY (2006)
 JV4910
 JV4910'RECOVERY NOTE BY US POWER SQUADRON 2006 (DU)
 JV4910'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4960 ***********************************************************************
 JV4960  DESIGNATION -  BUCK
 JV4960  PID         -  JV4960
 JV4960  STATE/COUNTY-  MD/KENT
 JV4960  COUNTRY     -  US
 JV4960  USGS QUAD   -  CHESTERTOWN (2017)
 JV4960
 JV4960                         *CURRENT SURVEY CONTROL
 JV4960  ______________________________________________________________________
 JV4960* NAD 83(1991) POSITION- 39 14 16.40452(N) 076 00 52.70548(W)   ADJUSTED
 JV4960* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4960  ______________________________________________________________________
 JV4960  GEOID HEIGHT    -        -33.466 (meters)                     GEOID18
 JV4960  LAPLACE CORR    -         -2.08  (seconds)                    DEFLEC18
 JV4960  HORZ ORDER      -  THIRD
 JV4960
 JV4960.The horizontal coordinates were established by classical geodetic methods
 JV4960.and adjusted by the National Geodetic Survey in January 1992.
 JV4960
 JV4960.The orthometric height was scaled from a topographic map.
 JV4960
 JV4960.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4960.GEOID18 height accuracy estimate available here.
 JV4960
 JV4960.Click photographs - Photos may exist for this station.
 JV4960
 JV4960.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4960
 JV4960. The following values were computed from the NAD 83(1991) position.
 JV4960
 JV4960;                    North         East     Units Scale Factor Converg.
 JV4960;SPC MD       -   174,874.278   485,067.369   MT  0.99996977   +0 37 06.4
 JV4960;SPC MD       -   573,733.36  1,591,425.19   sFT  0.99996977   +0 37 06.4
 JV4960;UTM  18      - 4,343,666.512   412,434.545   MT  0.99969441   -0 38 30.6
 JV4960
 JV4960!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4960!SPC MD       -   1.00000529  x   0.99996977  =   0.99997506
 JV4960!UTM  18      -   1.00000529  x   0.99969441  =   0.99969970
 JV4960
 JV4960:                Primary Azimuth Mark                     Grid Az
 JV4960:SPC MD       -  HIGH                                     061 23 55.2
 JV4960:UTM  18      -  HIGH                                     062 39 32.2
 JV4960
 JV4960_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1243443666(NAD 83)
 JV4960
 JV4960|---------------------------------------------------------------------|
 JV4960| PID    Reference Object                     Distance      Geod. Az  |
 JV4960|                                                           dddmmss.s |
 JV4960| JU3490 HIGH                                APPROX. 1.6 KM 0620101.6 |
 JV4960|---------------------------------------------------------------------|
 JV4960
 JV4960                          SUPERSEDED SURVEY CONTROL
 JV4960
 JV4960  NAD 83(1986)-  39 14 16.39456(N)    076 00 52.71914(W) AD(       ) 3
 JV4960  NAD 27      -  39 14 15.99100(N)    076 00 53.92200(W) AD(       ) 3
 JV4960  USSD        -  39 14 16.46800(N)    076 00 53.67900(W) AD(       ) 3
 JV4960
 JV4960.Superseded values are not recommended for survey control.
 JV4960
 JV4960.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4960.See file dsdata.pdf to determine how the superseded data were derived.
 JV4960
 JV4960_MARKER: N = NAIL
 JV4960_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4960_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4960
 JV4960  HISTORY     - Date     Condition        Report By
 JV4960  HISTORY     - 1909     MONUMENTED       CGS
 JV4960  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV4960
 JV4960                          STATION DESCRIPTION
 JV4960
 JV4960'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JV4960'STATION IS ON THE NORTHWESTERN SHORE OF CHESTER RIVER, ABOUT 10
 JV4960'METERS BACK FROM HIGH WATER AND 30 METERS W FROM THE SHORE END OF
 JV4960'BUCKINGHAM WHARF.
 JV4960'
 JV4960'THE STATION IS MARKED BY A BURIED WHITE QUART BOTTLE AND A NAIL
 JV4960'IN CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE TOP
 JV4960'OF A 4-INCH DRAINTILE AT THE SURFACE OF THE GROUND.  THE REFERENCE
 JV4960'MARK IS A BURIED QUART BOTTLE AND A NAIL IN CONCRETE AT THE TOP
 JV4960'OF A 3-INCH DRAINTILE AT THE SURFACE OF THE GROUND.  REFERENCE
 JV4960'MARK IS 8.17 METERS (26.80 FEET) FROM THE STATION
 JV4960'S 47 DEG 38 MIN W.
 JV4960
 JV4960                          STATION RECOVERY (1939)
 JV4960
 JV4960'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4960'STATION COULD NOT BE RECOVERED.  BELIEVED TO BE LONG SINCE COVERED
 JV4960'OVER OR REMOVED.  OLD RESIDENT REPORTS NEVER HAVING SEEN IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7194 ***********************************************************************
 JV7194  HT_MOD      -  This is a Height Modernization Survey Station.
 JV7194  DESIGNATION -  BUCK
 JV7194  PID         -  JV7194
 JV7194  STATE/COUNTY-  MD/FREDERICK
 JV7194  COUNTRY     -  US
 JV7194  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV7194
 JV7194                         *CURRENT SURVEY CONTROL
 JV7194  ______________________________________________________________________
 JV7194* NAD 83(2011) POSITION- 39 19 58.56854(N) 077 27 15.11022(W)   ADJUSTED
 JV7194* NAD 83(2011) ELLIP HT-    56.439 (meters)        (06/27/12)   ADJUSTED
 JV7194* NAD 83(2011) EPOCH   -  2010.00
 JV7194* NAVD 88 ORTHO HEIGHT -    89.10  (meters)      292.3   (feet) GPS OBS
 JV7194  ______________________________________________________________________
 JV7194  GEOID HEIGHT    -        -32.648 (meters)                     GEOID18
 JV7194  NAD 83(2011) X  -  1,073,072.613 (meters)                     COMP
 JV7194  NAD 83(2011) Y  - -4,822,072.038 (meters)                     COMP
 JV7194  NAD 83(2011) Z  -  4,021,009.978 (meters)                     COMP
 JV7194  LAPLACE CORR    -          4.08  (seconds)                    DEFLEC18
 JV7194
 JV7194  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7194  Standards:
 JV7194         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7194            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7194  -------------------------------------------------------------------
 JV7194  NETWORK    0.75   1.74           0.33   0.28   0.89     -0.11295463
 JV7194  -------------------------------------------------------------------
 JV7194  Click here for local accuracies and other accuracy information.
 JV7194
 JV7194.The horizontal coordinates were established by GPS observations
 JV7194.and adjusted by the National Geodetic Survey in June 2012.
 JV7194
 JV7194.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7194.been affixed to the stable North American tectonic plate. See 
 JV7194.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7194
 JV7194.The horizontal coordinates are valid at the epoch date displayed above
 JV7194.which is a decimal equivalence of Year/Month/Day.
 JV7194
 JV7194.The orthometric height was determined by GPS observations and a
 JV7194.high-resolution geoid model using precise GPS observation and
 JV7194.processing techniques.
 JV7194
 JV7194.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7194.GEOID18 height accuracy estimate available here.
 JV7194
 JV7194.Click photographs - Photos may exist for this station.
 JV7194
 JV7194.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7194
 JV7194.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7194
 JV7194.The ellipsoidal height was determined by GPS observations
 JV7194.and is referenced to NAD 83.
 JV7194
 JV7194. The following values were computed from the NAD 83(2011) position.
 JV7194
 JV7194;                    North         East     Units Scale Factor Converg.
 JV7194;SPC MD       -   185,064.374   360,840.460   MT  0.99998162   -0 17 06.3
 JV7194;SPC MD       -   607,165.37  1,183,857.41   sFT  0.99998162   -0 17 06.3
 JV7194;UTM  18      - 4,356,596.232   288,473.427   MT  1.00015094   -1 33 22.0
 JV7194
 JV7194!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7194!SPC MD       -   0.99999115  x   0.99998162  =   0.99997277
 JV7194!UTM  18      -   0.99999115  x   1.00015094  =   1.00014208
 JV7194
 JV7194_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8847356596(NAD 83)
 JV7194
 JV7194                          SUPERSEDED SURVEY CONTROL
 JV7194
 JV7194  NAD 83(2007)-  39 19 58.56875(N)    077 27 15.11092(W) AD(2002.00) 0
 JV7194  ELLIP H (02/10/07)   56.462  (m)                       GP(2002.00)    
 JV7194  ELLIP H (08/30/02)   56.457  (m)                       GP(       ) 4 2
 JV7194  NAD 83(1991)-  39 19 58.56913(N)    077 27 15.11080(W) AD(       ) 1
 JV7194  ELLIP H (02/09/94)   56.399  (m)                       GP(       ) 4 1
 JV7194  NAVD 88 (02/09/94)   89.1    (m)  GEOID93  model used  GPS OBS        
 JV7194
 JV7194.Superseded values are not recommended for survey control.
 JV7194
 JV7194.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7194.See file dsdata.pdf to determine how the superseded data were derived.
 JV7194
 JV7194_MARKER: DD = SURVEY DISK
 JV7194_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7194_STAMPING: BUCK 1993
 JV7194_MARK LOGO: MD-021
 JV7194_PROJECTION: FLUSH
 JV7194_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7194_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7194+STABILITY: SURFACE MOTION
 JV7194_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7194+SATELLITE: SATELLITE OBSERVATIONS - August 08, 2024
 JV7194
 JV7194  HISTORY     - Date     Condition        Report By
 JV7194  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7194  HISTORY     - 20011026 GOOD             DMW
 JV7194  HISTORY     - 20131119 GOOD             BASE9
 JV7194  HISTORY     - 20190621 GOOD             NGS
 JV7194  HISTORY     - 20230725 GOOD             WTBALL
 JV7194  HISTORY     - 20240808 GOOD             MDSHA
 JV7194
 JV7194                          STATION DESCRIPTION
 JV7194
 JV7194'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7194'FROM THE INTERSECTION OF NEW DESIGN ROAD AND MANOR WOODS ROAD IN
 JV7194'BUCKEYSTOWN, MD, GO NORTH 0.2 MILES (0.3 KM) TO STATION ON RIGHT.
 JV7194'STATION IS 22 FEET (6.7 M) SOUTHEAST OF CENTERLINE OF NEW DESIGN
 JV7194'ROAD, 89.5 FEET (27.3 M) NORTHEAST OF POTOMAC EDISON POWER POLE 3107
 JV7194'AND 90 FEET (27.4 M) SOUTHWEST OF POTOMAC EDISON POWER POLE 3106.
 JV7194'STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND CONCRETE
 JV7194'MONUMENT SET FLUSH WITH THE GROUND.
 JV7194
 JV7194                          STATION RECOVERY (2001)
 JV7194
 JV7194'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV7194'RECOVERED IN GOOD CONDITION.
 JV7194
 JV7194                          STATION RECOVERY (2013)
 JV7194
 JV7194'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV7194'RECOVERED IN GOOD CONDITION.
 JV7194
 JV7194                          STATION RECOVERY (2019)
 JV7194
 JV7194'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV7194'THE MARK IS 24.3 FT (7.4 M) WEST OF A SINGLE FENCE POST, 90 FT (27.4
 JV7194'M) SOUTHWEST OF UTILITY POLE NUMBER 3106 AND 12 FT (3.7 M) SOUTHEAST
 JV7194'OF THE CENTERLINE OF NEW DESIGN ROAD.
 JV7194
 JV7194                          STATION RECOVERY (2023)
 JV7194
 JV7194'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2023 (JMB)
 JV7194'RECOVERED IN GOOD CONDITION.
 JV7194
 JV7194                          STATION RECOVERY (2024)
 JV7194
 JV7194'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 JV7194'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3208 ***********************************************************************
 DS3208  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3208  DESIGNATION -  BUCK AZ MK
 DS3208  PID         -  DS3208
 DS3208  STATE/COUNTY-  MD/FREDERICK
 DS3208  COUNTRY     -  US
 DS3208  USGS QUAD   -  BUCKEYSTOWN (2016)
 DS3208
 DS3208                         *CURRENT SURVEY CONTROL
 DS3208  ______________________________________________________________________
 DS3208* NAD 83(2011) POSITION- 39 20 06.57755(N) 077 27 12.97724(W)   ADJUSTED
 DS3208* NAD 83(2011) ELLIP HT-    58.777 (meters)        (01/13/25)   ADJUSTED
 DS3208* NAD 83(2011) EPOCH   -  2010.00
 DS3208* NAVD 88 ORTHO HEIGHT -    91.43  (meters)      300.0   (feet) GPS OBS
 DS3208  ______________________________________________________________________
 DS3208  GEOID HEIGHT    -        -32.651 (meters)                     GEOID18
 DS3208  NAD 83(2011) X  -  1,073,088.862 (meters)                     COMP
 DS3208  NAD 83(2011) Y  - -4,821,909.889 (meters)                     COMP
 DS3208  NAD 83(2011) Z  -  4,021,202.502 (meters)                     COMP
 DS3208  LAPLACE CORR    -          4.03  (seconds)                    DEFLEC18
 DS3208
 DS3208  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3208  Standards:
 DS3208         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3208            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3208  -------------------------------------------------------------------
 DS3208  NETWORK    0.80   2.14           0.36   0.29   1.09     -0.10196361
 DS3208  -------------------------------------------------------------------
 DS3208  Click here for local accuracies and other accuracy information.
 DS3208
 DS3208.The horizontal coordinates were established by GPS observations
 DS3208.and adjusted by the MD DOT HIGHWAY ADMIN in January 2025.
 DS3208
 DS3208.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3208.been affixed to the stable North American tectonic plate. See 
 DS3208.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3208
 DS3208.The horizontal coordinates are valid at the epoch date displayed above
 DS3208.which is a decimal equivalence of Year/Month/Day.
 DS3208
 DS3208.The orthometric height was determined by GPS observations and a
 DS3208.high-resolution geoid model using precise GPS observation and
 DS3208.processing techniques.
 DS3208
 DS3208.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3208.GEOID18 height accuracy estimate available here.
 DS3208
 DS3208.Click photographs - Photos may exist for this station.
 DS3208
 DS3208.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3208
 DS3208.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3208
 DS3208.The ellipsoidal height was determined by GPS observations
 DS3208.and is referenced to NAD 83.
 DS3208
 DS3208. The following values were computed from the NAD 83(2011) position.
 DS3208
 DS3208;                    North         East     Units Scale Factor Converg.
 DS3208;SPC MD       -   185,311.106   360,892.770   MT  0.99998193   -0 17 04.9
 DS3208;SPC MD       -   607,974.85  1,184,029.03   sFT  0.99998193   -0 17 04.9
 DS3208;UTM  18      - 4,356,841.784   288,531.207   MT  1.00015064   -1 33 20.9
 DS3208
 DS3208!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3208!SPC MD       -   0.99999078  x   0.99998193  =   0.99997271
 DS3208!UTM  18      -   0.99999078  x   1.00015064  =   1.00014142
 DS3208
 DS3208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8853156841(NAD 83)
 DS3208
 DS3208                          SUPERSEDED SURVEY CONTROL
 DS3208
 DS3208.No superseded survey control is available for this station.
 DS3208
 DS3208_MARKER: DD = SURVEY DISK
 DS3208_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS3208_STAMPING: BUCK 1996
 DS3208_MARK LOGO: MD-021
 DS3208_PROJECTION: PROJECTING 1 CENTIMETERS
 DS3208_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS3208_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3208+SATELLITE: SATELLITE OBSERVATIONS - August 08, 2024
 DS3208
 DS3208  HISTORY     - Date     Condition        Report By
 DS3208  HISTORY     - 19960101 MONUMENTED       MD-021
 DS3208  HISTORY     - 20240808 GOOD             MDSHA
 DS3208
 DS3208                          STATION DESCRIPTION
 DS3208
 DS3208'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 DS3208'THE MARK IS LOCATED ABOUT 5.9 MI (9.5 KM) SOUTH-SOUTHWEST OF
 DS3208'FREDERICK, 5.5 MI (8.9 KM) WEST OF URBANA AND 1.2 MI (1.9 KM) WEST OF
 DS3208'BUCKEYSTOWN.
 DS3208'
 DS3208'TO REACH THE MARK FROM THE INTERSECTION OF MD 28(TUSCARORA ROAD)AND
 DS3208'NEW DESIGN ROAD PROCEED NORTH ON NEW DESIGN ROAD FOR 5.35 MI (8.61 KM)
 DS3208'TO THE MARK ON THE LEFT.
 DS3208'
 DS3208'THE MARK IS 167.5 FT (51.1 M) NORTH-NORTHWEST OF A UTILITY POLE
 DS3208'NUMBERED ALLG POWER MD 3104, 49 FT (14.9 M) SOUTH-SOUTHWEST OF A
 DS3208'UTILITY POLE NUMBERED PE SYSTEM MD 3103, 15 FT (4.6 M) WEST-NORTHWEST
 DS3208'OF THE CENTERLINE OF NEW DESIGN ROAD, 5.3 FT (1.6 M) EAST-SOUTHEAST OF
 DS3208'A PLANTED FIELD SET IN THE TOP OF A 4-IN (10 CM) SQUARE CONCRETE POST
 DS3208'AND ABOUT 1 FT (0.3 M) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7311 ***********************************************************************
 HV7311  DESIGNATION -  BUCKLER
 HV7311  PID         -  HV7311
 HV7311  STATE/COUNTY-  MD/CALVERT
 HV7311  COUNTRY     -  US
 HV7311  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV7311
 HV7311                         *CURRENT SURVEY CONTROL
 HV7311  ______________________________________________________________________
 HV7311* NAD 83(1993) POSITION- 38 33 33.10942(N) 076 31 12.13302(W)   ADJUSTED
 HV7311* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 HV7311  ______________________________________________________________________
 HV7311  GEOID HEIGHT    -        -33.993 (meters)                     GEOID18
 HV7311  LAPLACE CORR    -         -5.48  (seconds)                    DEFLEC18
 HV7311  HORZ ORDER      -  FIRST
 HV7311
 HV7311.The horizontal coordinates were established by classical geodetic methods
 HV7311.and adjusted by the National Geodetic Survey in November 1994.
 HV7311
 HV7311.The orthometric height was scaled from a topographic map.
 HV7311
 HV7311.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7311.GEOID18 height accuracy estimate available here.
 HV7311
 HV7311.Click photographs - Photos may exist for this station.
 HV7311
 HV7311.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7311
 HV7311. The following values were computed from the NAD 83(1993) position.
 HV7311
 HV7311;                    North         East     Units Scale Factor Converg.
 HV7311;SPC MD       -    99,184.346   441,832.559   MT  0.99996503   +0 18 04.5
 HV7311;SPC MD       -   325,407.31  1,449,578.99   sFT  0.99996503   +0 18 04.5
 HV7311;UTM  18      - 4,268,957.243   367,561.062   MT  0.99981600   -0 56 51.4
 HV7311
 HV7311!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7311!SPC MD       -   1.00000004  x   0.99996503  =   0.99996507
 HV7311!UTM  18      -   1.00000004  x   0.99981600  =   0.99981604
 HV7311
 HV7311:                Primary Azimuth Mark                     Grid Az
 HV7311:SPC MD       -  BUCKLER RM 1                             095 18 13.8
 HV7311:UTM  18      -  BUCKLER RM 1                             096 33 09.7
 HV7311
 HV7311_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6756168957(NAD 83)
 HV7311
 HV7311|---------------------------------------------------------------------|
 HV7311| PID    Reference Object                     Distance      Geod. Az  |
 HV7311|                                                           dddmmss.s |
 HV7311| CX2141 BUCKLER RM 1                                       0953618.3 |
 HV7311| CX2142 BUCKLER RM 2                         61.276 METERS 18328     |
 HV7311| CX2143 BUCKLER RM 3                         29.352 METERS 22848     |
 HV7311|---------------------------------------------------------------------|
 HV7311
 HV7311                          SUPERSEDED SURVEY CONTROL
 HV7311
 HV7311  NAD 83(1991)-  38 33 33.10973(N)    076 31 12.13339(W) AD(       ) 1
 HV7311  NAD 83(1986)-  38 33 33.10864(N)    076 31 12.14748(W) AD(       ) 1
 HV7311  NAD 27      -  38 33 32.66500(N)    076 31 13.32000(W) AD(       ) 1
 HV7311
 HV7311.Superseded values are not recommended for survey control.
 HV7311
 HV7311.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7311.See file dsdata.pdf to determine how the superseded data were derived.
 HV7311
 HV7311_MARKER: DS = TRIANGULATION STATION DISK
 HV7311_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7311_STAMPING: BUCKLER 1934
 HV7311_MARK LOGO: CGS
 HV7311_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7311+STABILITY: SURFACE MOTION
 HV7311
 HV7311  HISTORY     - Date     Condition        Report By
 HV7311  HISTORY     - 1934     MONUMENTED       CGS
 HV7311  HISTORY     - 1943     GOOD             CGS
 HV7311  HISTORY     - 1947     GOOD             CGS
 HV7311  HISTORY     - 1959     GOOD             CGS
 HV7311  HISTORY     - 1960     GOOD             CGS
 HV7311
 HV7311                          STATION DESCRIPTION
 HV7311
 HV7311'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV7311'STATION IS ON THE PROPERTY OF MR. M.A. BUCKLER ABOUT 1/4 MILE BACK
 HV7311'FROM THE BAY SHORE ON THE HIGHEST GROUND IN THE VICINITY OF DARES
 HV7311'WHARF WHICH IS A SMALL COLONY OF SUMMER COTTAGES.
 HV7311'
 HV7311'TO REACH THE STATION FROM PRINCE FREDERICK GO N ON STATE HIGHWAY 2
 HV7311'FOR 1/2 MILE AND TURN RIGHT ON HARD-SURFACE ROAD AT SIGN DARES
 HV7311'WHARF 4 1/2.  FOLLOW THIS ROAD 2.5 MILES TO THE END OF THE HARD
 HV7311'SURFACE ROAD AND BEGIN AT A DIRT ROAD, FOLLOW THIS DIRT ROAD 1.4
 HV7311'MILES TO THE HOME OF MR. BUCKLER WHICH IS ON THE N SIDE OF THE
 HV7311'ROAD ON THE TOP OF A HILL.  THIS HOUSE IS WHITE WITH A GREEN
 HV7311'SHINGLE ROOF.  STATION IS 61.45 FEET N OF THE NE CORNER OF THE
 HV7311'HOUSE WHICH IS IN THE REAR OF THE HOUSE. MARK PROJECTS 2 INCHES
 HV7311'ABOVE THE SURFACE OF THE GROUND.
 HV7311'
 HV7311'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV7311'DISKS SET IN CONCRETE.
 HV7311'
 HV7311'REFERENCE MARK NO. 2, 201.11 FEET S OF THE STATION, 94 FEET S OF
 HV7311'THE SE CORNER OF BUCKLERS HOUSE, 2 FEET N OF THE FENCE LINE WHICH
 HV7311'IS ON THE N SIDE OF THE ROAD LEADING TO THE HOUSE AND PAST TO
 HV7311'DARES WHARF, 25 FEET E OF THE CENTER LINE OF THE ROAD LEADING TO
 HV7311'THE HOUSE.  MARK PROJECTS 4 INCHES ABOVE THE SURFACE OF THE
 HV7311'GROUND.  REFERENCE MARK NO.3 IS 96.30 FEET SW OF THE STATION SET
 HV7311'IN THE CONCRETE WELL COVER WHICH IS 19 FEET W OF THE NW CORNER OF
 HV7311'THE HOUSE.  REFERENCE MARK NO.1, AZIMUTH MARK, IS 0.3 MILE E OF
 HV7311'THE STATION, 25 FEET E OF THE CENTER LINE OF THE ROAD RUNNING N
 HV7311'AND S IN THE VILLAGE OF DARES BEACH, 3 FEET W OF THE NW CORNER OF
 HV7311'A WHITE DOUBLE GARAGE.  TO REACH FROM THE STATION GO E ON THE ROAD
 HV7311'RUNNING PAST MR. BUCKLERS HOUSE TO THE BEACH AND TURN RIGHT ON THE
 HV7311'ROAD NEXT TO THE BEACH AND GO 0.25 MILE AT THE TOP OF A GRADE IN
 HV7311'THE ROAD TO THE MARK.  THE MARK IS FLUSH WITH THE SURFACE OF THE
 HV7311'GROUND AND IS VISIBLE FROM THE GROUND AT THE STATION WITH SMALL
 HV7311'AMOUNT OF CLEARING.
 HV7311'
 HV7311'A 77-FOOT TOWER WILL CLEAR ALL LINES AT THIS STATION.
 HV7311'
 HV7311'A 4-FOOT STAND AT EACH END OF THE LINE BUCKLER-WILSON 2 WILL
 HV7311'CLEAR BY CLEARING SOME BRANCHES AT THE BUCKLER END OF THE LINE.
 HV7311'STATION BUCKLER IS TO BE USED AS A LA PLACE AZIMUTH STATION.
 HV7311
 HV7311                          STATION RECOVERY (1943)
 HV7311
 HV7311'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7311'THE STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED AND
 HV7311'FOUND IN GOOD CONDITION.  A DIFFERENCE IN MEASUREMENT WAS NOTED TO
 HV7311'REFERENCE MARK NO. 2.  THE 1934 MEASUREMENT WAS 201.11 FEET AND
 HV7311'THE 1943 MEASUREMENT IS 201.04.  FOLLOWING IS A COMPLETE NEW
 HV7311'DESCRIPTION.
 HV7311'
 HV7311'THE STATION IS LOCATED ON PROPERTY OWNED BY M. A. BUCKLER, ABOUT
 HV7311'1/4 MILE BACK FROM THE BAY SHORE, ON THE HIGHEST POINT IN THE
 HV7311'VICINITY OF DARES WHARF WHICH IS A SMALL COLONY OF SUMMER
 HV7311'COTTAGES. IT IS 65 FEET NORTH OF THE NORTHEAST CORNER OF THE HOUSE
 HV7311'AND IS STAMPED BUCKLER 1934 AND PROJECTS 4 INCHES.
 HV7311'
 HV7311'REFERENCE MARK NO. 2 IS SOUTH OF THE STATION, 94 FEET SOUTH OF THE
 HV7311'SOUTHEAST CORNER OF THE HOUSE, 25 FEET EAST OF THE CENTER OF THE
 HV7311'ROAD.  IT IS STAMPED BUCKLER NO 2 1934 AND PROJECTS 4 INCHES.
 HV7311'
 HV7311'REFERENCE MARK NO. 3 IS SOUTHWEST OF THE STATION SET FLUSH IN A
 HV7311'CONCRETE WELL TOP.  IT IS 19 FEET WEST OF THE NORTHWEST CORNER OF
 HV7311'THE HOUSE.  IT IS STAMPED BUCKLER NO 3 1934.
 HV7311'
 HV7311'REFERENCE MARK NO. 1 (AZIMUTH MARK) IS 0.3 MILE, AIRLINE, EAST OF
 HV7311'THE STATION, 18 FEET EAST OF THE CENTER OF THE ROAD RUNNING NORTH
 HV7311'AND SOUTH IN THE VILLAGE OF DARES WHARF.  IT IS 2-1/2 FEET WEST OF
 HV7311'THE NORTHWEST CORNER OF A WHITE DOUBLE GARAGE.  IT IS STAMPED
 HV7311'BUCKLER NO 1 1934 AND IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV7311'SOME CLEARING NECESSARY.  TO REACH FROM THE STATION GO EAST ON THE
 HV7311'ROAD RUNNING PAST BUCKLERS HOUSE TO THE BEACH.  TURN RIGHT ON THE
 HV7311'ROAD RUNNING NEXT TO THE BEACH AND GO 0.25 MILE TO THE MARK ON THE
 HV7311'LEFT AS DESCRIBED.
 HV7311'
 HV7311'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION HOWE 1942.
 HV7311'
 HV7311'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION TURNER.
 HV7311'
 HV7311'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION SOPER.
 HV7311'
 HV7311'A 77-FOOT TOWER WILL SEE A 113 FOOT LIGHT AT STATION HUTCHINS 1934.
 HV7311'
 HV7311'HEIGHT OF LIGHT ABOVE STATION MARK - 30 METERS.
 HV7311
 HV7311                          STATION RECOVERY (1947)
 HV7311
 HV7311'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947 (MJT)
 HV7311'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND IN
 HV7311'GOOD CONDITION.  DISTANCES TO MARKS WERE CHECKED AND FOUND TO BE
 HV7311'CORRECT.  A COMPLETE NEW DESCRIPTION FOLLOWS--
 HV7311'
 HV7311'THE STATION IS LOCATED ABOUT 5 MILES E OF PRINCE FREDERICK, ON
 HV7311'PROPERTY OWNED BY M.A. BUCKLER, ABOUT 1/4 MILE BACK FROM THE BAY
 HV7311'SHORE, ON THE HIGHEST POINT OF LAND IN THE VICINITY.  IT IS 65
 HV7311'FEET N OF THE NE CORNER OF THE HOUSE AND 10 FEET NE OF AN APPLE
 HV7311'TREE AT THE EDGE OF THE LAWN.
 HV7311'
 HV7311'STATION MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED
 HV7311'BUCKLER 1934.
 HV7311'
 HV7311'REFERENCE MARK 1 (AZIMUTH MARK) IS ABOUT 0.3 MILE, AIRLINE, E OF
 HV7311'THE STATION, 18 FEET E OF THE CENTER LINE OF THE ROAD, AND 2-1/2
 HV7311'FEET W OF THE NW CORNER OF A WHITE DOUBLE GARAGE.  IT IS STAMPED
 HV7311'BUCKLER NO 1 1934 AND IS FLUSH WITH THE GROUND.
 HV7311'
 HV7311'REFERENCE MARK 2 IS 201.03 FEET S OF THE STATION, 94 FEET S OF
 HV7311'THE SE CORNER OF THE HOUSE, 25 FEET E OF THE CENTER LINE OF THE
 HV7311'ROAD. THE MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED
 HV7311'BUCKLER NO 2 1934.
 HV7311'
 HV7311'REFERENCE MARK 3 IS 96.30 FEET SW OF THE STATION, SET FLUSH IN A
 HV7311'CONCRETE WELL CURB.  IT IS STAMPED BUCKLER NO 3 1934.
 HV7311'
 HV7311'TO REACH THE STATION FROM THE CALVERT HOTEL IN PRINCE FREDERICK,
 HV7311'GO N ON STATE HIGHWAY 2 FOR 0.3 MILE.  TURN RIGHT ON STATE HIGHWAY
 HV7311'402 AND GO 0.5 MILE.  TURN RIGHT AT T-ROAD AND GO 3.9 MILES.  TURN
 HV7311'LEFT UP GRAVEL DRIVE TO HOUSE OF M.A. BUCKLER AND STATION AT THE
 HV7311'REAR, AS DESCRIBED.
 HV7311
 HV7311                          STATION RECOVERY (1959)
 HV7311
 HV7311'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (LFV)
 HV7311'STATION, REFERENCE MARK NO. 2, AND REFERENCE MARK NO. 3 RECOVERED
 HV7311'IN GOOD CONDITION.  REFERENCE MARK NO. 1 NOT SEARCHED FOR.  ANGLE
 HV7311'BETWEEN REFERENCE MARKS AND DISTANCES TO REFERENCE MARKS CHECKED
 HV7311'AND FOUND CORRECT.  DESCRIPTION BY MJT IN 1947 RECOVERY NOTE
 HV7311'ADEQUATE AND CORRECT EXCEPT FOR THE FOLLOWING.  STATION IS 57.1
 HV7311'FEET NORTHEAST OF NORTHEAST CORNER OF WELL COVER FOR NEW WELL.
 HV7311'REFERENCE MARK NO. 2 IS 35.7 FEET SOUTHWEST OF C/L GRAVEL DRIVE,
 HV7311'21.9 FEET EAST OF A POWER POLE AND AT THE TOP OF BANK ALONG
 HV7311'NORTHEAST SIDE OF ROAD.
 HV7311
 HV7311                          STATION RECOVERY (1960)
 HV7311
 HV7311'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7311'THE STATION, REFERENCE MARKS NO.2 AND NO.3 WERE RECOVERED AS
 HV7311'DESCRIBED.  THE DISTANCES TO THE R.M.S WERE CHECKED AND FOUND
 HV7311'CORRECT AS PUBLISHED IN THE 1943 DESCRIPTION.  AZIMUTH MARK R.M.
 HV7311'NO.1 WAS RECOVERED AS DESCRIBED.  THE PREVIOUS DESCRIPTION BY
 HV7311'G.W.L. IN 1943 IS CORRECT AND ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6207 ***********************************************************************
 DN6207  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6207  DESIGNATION -  BUDD
 DN6207  PID         -  DN6207
 DN6207  STATE/COUNTY-  MD/CECIL
 DN6207  COUNTRY     -  US
 DN6207  USGS QUAD   -  CECILTON (2016)
 DN6207
 DN6207                         *CURRENT SURVEY CONTROL
 DN6207  ______________________________________________________________________
 DN6207* NAD 83(2011) POSITION- 39 23 04.96031(N) 075 50 23.72513(W)   ADJUSTED
 DN6207* NAD 83(2011) ELLIP HT-   -12.974 (meters)        (06/27/12)   ADJUSTED
 DN6207* NAD 83(2011) EPOCH   -  2010.00
 DN6207* NAVD 88 ORTHO HEIGHT -    20.54  (meters)       67.4   (feet) GPS OBS
 DN6207  ______________________________________________________________________
 DN6207  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6207  GEOID HEIGHT    -        -33.496 (meters)                     GEOID03
 DN6207  GEOID HEIGHT    -        -33.523 (meters)                     GEOID18
 DN6207  NAD 83(2011) X  -  1,207,582.796 (meters)                     COMP
 DN6207  NAD 83(2011) Y  - -4,786,342.450 (meters)                     COMP
 DN6207  NAD 83(2011) Z  -  4,025,410.449 (meters)                     COMP
 DN6207  LAPLACE CORR    -         -1.08  (seconds)                    DEFLEC18
 DN6207
 DN6207  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6207  Standards:
 DN6207         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6207            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6207  -------------------------------------------------------------------
 DN6207  NETWORK    0.58   1.39           0.26   0.21   0.71      0.05521090
 DN6207  -------------------------------------------------------------------
 DN6207  Click here for local accuracies and other accuracy information.
 DN6207
 DN6207.The horizontal coordinates were established by GPS observations
 DN6207.and adjusted by the National Geodetic Survey in June 2012.
 DN6207
 DN6207.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6207.been affixed to the stable North American tectonic plate. See 
 DN6207.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6207
 DN6207.The horizontal coordinates are valid at the epoch date displayed above
 DN6207.which is a decimal equivalence of Year/Month/Day.
 DN6207
 DN6207.The orthometric height was determined by GPS observations and a
 DN6207.high-resolution geoid model using precise GPS observation and
 DN6207.processing techniques.
 DN6207
 DN6207.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6207.GEOID18 height accuracy estimate available here.
 DN6207
 DN6207.Click photographs - Photos may exist for this station.
 DN6207
 DN6207.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6207
 DN6207.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6207
 DN6207.The ellipsoidal height was determined by GPS observations
 DN6207.and is referenced to NAD 83.
 DN6207
 DN6207. The following values were computed from the NAD 83(2011) position.
 DN6207
 DN6207;                    North         East     Units Scale Factor Converg.
 DN6207;SPC MD       -   191,350.145   499,943.012   MT  0.99998923   +0 43 41.2
 DN6207;SPC MD       -   627,787.93  1,640,229.70   sFT  0.99998923   +0 43 41.2
 DN6207;UTM  18      - 4,359,806.248   427,664.523   MT  0.99966442   -0 31 58.7
 DN6207
 DN6207!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6207!SPC MD       -   1.00000204  x   0.99998923  =   0.99999127
 DN6207!UTM  18      -   1.00000204  x   0.99966442  =   0.99966645
 DN6207
 DN6207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2766459806(NAD 83)
 DN6207
 DN6207                          SUPERSEDED SURVEY CONTROL
 DN6207
 DN6207  NAD 83(2007)-  39 23 04.96041(N)    075 50 23.72585(W) AD(2002.00) 1
 DN6207  ELLIP H (02/23/12)  -12.943  (m)                       GP(2002.00) 4 1
 DN6207
 DN6207.Superseded values are not recommended for survey control.
 DN6207
 DN6207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6207.See file dsdata.pdf to determine how the superseded data were derived.
 DN6207
 DN6207_MARKER: DD = SURVEY DISK
 DN6207_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6207_STAMPING: BUDD 2008
 DN6207_MARK LOGO: MD-015
 DN6207_PROJECTION: FLUSH
 DN6207_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6207_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6207+STABILITY: SURFACE MOTION
 DN6207_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6207+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6207
 DN6207  HISTORY     - Date     Condition        Report By
 DN6207  HISTORY     - 20081204 MONUMENTED       GWS
 DN6207
 DN6207                          STATION DESCRIPTION
 DN6207
 DN6207'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6207'THE STATION IS LOCATED ABOUT 2.00 MI (3.2 KM) SOUTHEAST OF CECILTON.
 DN6207'
 DN6207'TO REACH THE STATION FROM THE JUNCTION OF AUGUSTINE HERMAN HIGHWAY
 DN6207'(ROUTE 213) AND CECILTON WARWICK ROAD (ROUTE 282), PROCEED WEST ON
 DN6207'CECILTON WARWICK ROAD FOR 1.25 MI (2.0 KM) TO A SIDE ROAD ON THE
 DN6207'RIGHT.  TURN RIGHT AND GO SOUTH ON WARDS HILL ROAD FOR 0.53 MI (0.9
 DN6207'KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTH ON BUDDS
 DN6207'LANDING ROAD FOR 0.81 MI (1.3 KM) TO THE JUNCTION OF MEGAN DRIVE AND
 DN6207'THE STATION ON THE RIGHT IN THE NORTHWEST ANGLE OF THE INTERSECTION.
 DN6207'
 DN6207'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6207'CONCRETE MONUMENT, 21 FT (6.4 M) WEST OF THE CENTERLINE OF BUDDS
 DN6207'LANDING ROAD, 65.2 FT (19.9 M) NORTH OF A BUDDS LANDING SIGN ON THE
 DN6207'SOUTHWEST ANGLE OF THE INTERSECTION AND 74 FT (22.6 M) SOUTHEAST OF AN
 DN6207'OAK TREE IN THE NORTHWEST ANGLE OF THE INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7328 ***********************************************************************
 HV7328  DESIGNATION -  BUENA
 HV7328  PID         -  HV7328
 HV7328  STATE/COUNTY-  MD/CALVERT
 HV7328  COUNTRY     -  US
 HV7328  USGS QUAD   -  BENEDICT (2016)
 HV7328
 HV7328                         *CURRENT SURVEY CONTROL
 HV7328  ______________________________________________________________________
 HV7328* NAD 83(1993) POSITION- 38 31 40.26602(N) 076 39 10.45752(W)   ADJUSTED
 HV7328* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV7328  ______________________________________________________________________
 HV7328  GEOID HEIGHT    -        -33.714 (meters)                     GEOID18
 HV7328  LAPLACE CORR    -         -3.85  (seconds)                    DEFLEC18
 HV7328  HORZ ORDER      -  SECOND
 HV7328
 HV7328.The horizontal coordinates were established by classical geodetic methods
 HV7328.and adjusted by the National Geodetic Survey in November 1994.
 HV7328
 HV7328.The orthometric height was scaled from a topographic map.
 HV7328
 HV7328.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7328.GEOID18 height accuracy estimate available here.
 HV7328
 HV7328.Click photographs - Photos may exist for this station.
 HV7328
 HV7328.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7328
 HV7328. The following values were computed from the NAD 83(1993) position.
 HV7328
 HV7328;                    North         East     Units Scale Factor Converg.
 HV7328;SPC MD       -    95,652.478   430,265.370   MT  0.99996818   +0 13 04.3
 HV7328;SPC MD       -   313,819.84  1,411,628.97   sFT  0.99996818   +0 13 04.3
 HV7328;UTM  18      - 4,265,678.624   355,921.204   MT  0.99985564   -1 01 47.1
 HV7328
 HV7328!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7328!SPC MD       -   1.00000455  x   0.99996818  =   0.99997273
 HV7328!UTM  18      -   1.00000455  x   0.99985564  =   0.99986019
 HV7328
 HV7328:                Primary Azimuth Mark                     Grid Az
 HV7328:SPC MD       -  HALLOWING                                207 08 56.1
 HV7328:UTM  18      -  HALLOWING                                208 23 47.5
 HV7328
 HV7328_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5592165678(NAD 83)
 HV7328
 HV7328|---------------------------------------------------------------------|
 HV7328| PID    Reference Object                     Distance      Geod. Az  |
 HV7328|                                                           dddmmss.s |
 HV7328| CX2146 BUENA RM                             11.110 METERS 00542     |
 HV7328| HV7338 HALLOWING                           APPROX. 2.4 KM 2072200.4 |
 HV7328|---------------------------------------------------------------------|
 HV7328
 HV7328                          SUPERSEDED SURVEY CONTROL
 HV7328
 HV7328  NAD 83(1991)-  38 31 40.26601(N)    076 39 10.45885(W) AD(       ) 2
 HV7328  NAD 83(1986)-  38 31 40.26508(N)    076 39 10.47297(W) AD(       ) 2
 HV7328  NAD 27      -  38 31 39.81900(N)    076 39 11.61800(W) AD(       ) 2
 HV7328  USSD        -  38 31 40.18000(N)    076 39 11.37300(W) AD(       ) 3
 HV7328
 HV7328.Superseded values are not recommended for survey control.
 HV7328
 HV7328.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7328.See file dsdata.pdf to determine how the superseded data were derived.
 HV7328
 HV7328_MARKER: N = NAIL
 HV7328_SETTING: 0 = UNSPECIFIED SETTING
 HV7328
 HV7328  HISTORY     - Date     Condition        Report By
 HV7328  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7328  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV7328  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV7328
 HV7328                          STATION DESCRIPTION
 HV7328
 HV7328'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7328'STATION IS ON THE EASTERN SHORE OF PATUXENT RIVER, ABOUT 1-3/4
 HV7328'MILES NE OF BENEDICT, AT PLACE KNOWN AS BUENA VISTA, IN A FIELD
 HV7328'ADJOINING HOUSE OWNED BY S.V. SMITH AND OCCUPIED BY DOCTOR
 HV7328'HUGGINS, ABOUT 10 FEET ABOVE HIGH WATER, 8 YARDS E OF EDGE OF
 HV7328'BANK, AND 12 YARDS S OF A RAIL FENCE.
 HV7328'
 HV7328'STATION MARK IS NAIL IN STUB WITH TOP 2 INCHES ABOVE SURFACE OF
 HV7328'GROUND.
 HV7328'
 HV7328'REFERENCE MARK IS HOLE IN CENTER OF THE TOP OF A MARYLAND SHELL
 HV7328'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2
 HV7328'FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV7328'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS NEAR
 HV7328'FENCE AND IS 11.11 METERS (36.4 FEET) FROM STATION IN BEARING N 5
 HV7328'DEG 42 MIN E. DISTANCES AND BEARINGS FROM THE STATION TO OTHER
 HV7328'POINTS OF REFERENCE ARE AS FOLLOWS--CENTER OF RED ROOF ON SQUARE
 HV7328'HOUSE NEAR BENEDICT, 2 MILES, S 45 DEG 27 MIN W.  CANNING-HOUSE
 HV7328'STACK 1-3/4 MILES, S 48 DEG 52 MIN W.  NAIL IN BLAZE IN 4-INCH
 HV7328'LOCUST TREE, 8.58 METERS (28.15 FEET), S 59 DEG 11 MIN W.  LEFT
 HV7328'CHIMNEY OF OLD HOUSE, 3 MILES, N 86 DEG 23 MIN W.  LEFT CHIMNEY OF
 HV7328'OLD HOUSE, 3 MILES, N 79 DEG 46 MIN W.  NAIL IN BLAZE IN 2-INCH
 HV7328'CHERRY TREE, 9.70 METERS (31.82 FEET), N 53 DEG 33 MIN W. CHIMNEY
 HV7328'OF HOUSE NEAR LEITCH WHARF, 1 MILE N 43 DEG 46 MIN W. NAIL IN
 HV7328'BLAZE IN FENCE POST, 11.18 METERS (36.7 FEET), N 9 DEG 4 MIN W.
 HV7328'NEAR CORNER OF HOUSE, 25 YARDS, N 7 DEG 6 MIN E.  15-INCH CHERRY
 HV7328'TREE ON FENCE LINE, 35 YARDS, N 68 DEG 47 MIN E. 30-INCH DOUBLE
 HV7328'APPLE TREE, 59 YARDS, S 41 DEG 44 MIN E.
 HV7328
 HV7328                          STATION RECOVERY (1930)
 HV7328
 HV7328'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV7328'STATION MARK WASHED AWAY BUT REFERENCE STONE RECOVERED.  NO MARKER
 HV7328'ERECTED AS IT IS NEAR A DOCTORS FRONT PORCH AND NO SURVEYS HAD TO
 HV7328'BE MADE IN THIS LOCALITY JUST NOW.
 HV7328
 HV7328                          STATION RECOVERY (1942)
 HV7328
 HV7328'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV7328'REFERENCE MARK RECOVERED INTACT, STATION HAS BEEN LOST BY EROSION.
 HV7328'REFERENCE MARK IS WITHIN 1 FOOT OF NET WIRE FENCE AND IN A LAWN.
 HV7328'
 HV7328'STATION IS REACHED FROM HUGHESVILLE VIA THE BENEDICT ROAD, 6 MILES
 HV7328'AND ACROSS FERRY, THENCE CONTINUE ON MAIN ROAD FOR 3.5 MILES TO
 HV7328'BARSTOW, HERE TURN LEFT, W, ON GRAVEL ROAD, GO RIGHT, GO 1 MILE,
 HV7328'GO THROUGH WHITE GATE TO HOUSE AND STATION SITE, WHICH IS ON S
 HV7328'SIDE OF HOUSE, 1 FOOT N OF NET WIRE FENCE AND ABOUT 25 FEET INSHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7339 ***********************************************************************
 HV7339  DESIGNATION -  BUENA 2
 HV7339  PID         -  HV7339
 HV7339  STATE/COUNTY-  MD/CALVERT
 HV7339  COUNTRY     -  US
 HV7339  USGS QUAD   -  BENEDICT (2016)
 HV7339
 HV7339                         *CURRENT SURVEY CONTROL
 HV7339  ______________________________________________________________________
 HV7339* NAD 83(1993) POSITION- 38 31 40.67021(N) 076 39 10.59312(W)   ADJUSTED
 HV7339* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV7339  ______________________________________________________________________
 HV7339  GEOID HEIGHT    -        -33.714 (meters)                     GEOID18
 HV7339  LAPLACE CORR    -         -3.85  (seconds)                    DEFLEC18
 HV7339  HORZ ORDER      -  THIRD
 HV7339
 HV7339.The horizontal coordinates were established by classical geodetic methods
 HV7339.and adjusted by the National Geodetic Survey in November 1994.
 HV7339
 HV7339.The orthometric height was scaled from a topographic map.
 HV7339
 HV7339.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7339.GEOID18 height accuracy estimate available here.
 HV7339
 HV7339.Click photographs - Photos may exist for this station.
 HV7339
 HV7339.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7339
 HV7339. The following values were computed from the NAD 83(1993) position.
 HV7339
 HV7339;                    North         East     Units Scale Factor Converg.
 HV7339;SPC MD       -    95,664.928   430,262.038   MT  0.99996817   +0 13 04.2
 HV7339;SPC MD       -   313,860.68  1,411,618.04   sFT  0.99996817   +0 13 04.2
 HV7339;UTM  18      - 4,265,691.143   355,918.144   MT  0.99985565   -1 01 47.2
 HV7339
 HV7339!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7339!SPC MD       -   1.00000455  x   0.99996817  =   0.99997272
 HV7339!UTM  18      -   1.00000455  x   0.99985565  =   0.99986020
 HV7339
 HV7339:                Primary Azimuth Mark                     Grid Az
 HV7339:SPC MD       -  HALLOWING                                206 56 22.0
 HV7339:UTM  18      -  HALLOWING                                208 11 13.4
 HV7339
 HV7339_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5591865691(NAD 83)
 HV7339
 HV7339|---------------------------------------------------------------------|
 HV7339| PID    Reference Object                     Distance      Geod. Az  |
 HV7339|                                                           dddmmss.s |
 HV7339| CX2144 BUENA 2 RM 1                          4.349 METERS 10804     |
 HV7339| HV7338 HALLOWING                           APPROX. 2.4 KM 2070926.2 |
 HV7339| CX2145 BUENA 2 RM 2                          7.718 METERS 33447     |
 HV7339|---------------------------------------------------------------------|
 HV7339
 HV7339                          SUPERSEDED SURVEY CONTROL
 HV7339
 HV7339  NAD 83(1991)-  38 31 40.67020(N)    076 39 10.59444(W) AD(       ) 3
 HV7339  NAD 83(1986)-  38 31 40.66928(N)    076 39 10.60862(W) AD(       ) 3
 HV7339  NAD 27      -  38 31 40.22400(N)    076 39 11.75600(W) AD(       ) 3
 HV7339
 HV7339.Superseded values are not recommended for survey control.
 HV7339
 HV7339.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7339.See file dsdata.pdf to determine how the superseded data were derived.
 HV7339
 HV7339_MARKER: DS = TRIANGULATION STATION DISK
 HV7339_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7339_STAMPING: BUENA 2 1943
 HV7339_MARK LOGO: CGS
 HV7339_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7339+STABILITY: SURFACE MOTION
 HV7339
 HV7339  HISTORY     - Date     Condition        Report By
 HV7339  HISTORY     - 1943     MONUMENTED       CGS
 HV7339  HISTORY     - 1945     GOOD             CGS
 HV7339  HISTORY     - 1960     GOOD             CGS
 HV7339  HISTORY     - 1982     MARK NOT FOUND   MDDNR
 HV7339
 HV7339                          STATION DESCRIPTION
 HV7339
 HV7339'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7339'THE STATION IS LOCATED AT OR NEAR THE SITE OF BUENA MDSFC WHICH
 HV7339'HAS BEEN LOST.  HOWEVER, THE REFERENCE MARK TO THAT STATION WAS
 HV7339'RECOVERED AND WAS USED AS REFERENCE MARK NO. 2 FOR THIS STATION.
 HV7339'IT IS LOCATED ON THE EASTERN SHORE OF THE PATUXENT RIVER, ABOUT 2
 HV7339'MILES WEST OF BARSTOW, IN THE LAWN OF A SUMMER HOME FORMERLY
 HV7339'OWNED BY S.V. SMITH.  IT IS IN THE SOUTHWEST CORNER OF THE LAWN, 5
 HV7339'FEET NORTH OF THE SOUTH FENCE LINE, 2 FEET NORTHEAST OF THE BANK,
 HV7339'18 FEET WEST AND 30 FEET SOUTH OF THE SOUTHWEST CORNER OF THE
 HV7339'HOUSE.  IT IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED BUENA
 HV7339'2 1943.
 HV7339'
 HV7339'SURFACE AND REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE AS
 HV7339'DESCRIBED.
 HV7339'
 HV7339'REFERENCE MARK NO. 1 IS THE OLD REFERENCE MARK TO BUENA MSFC.  IT
 HV7339'IS A GRANITE POST WITH A TRIANGLE AND THE LETTERS MDSFC USCS
 HV7339'COUNTERSUNK IN THE TOP OF THE POST.  IT IS SET IN THE FENCE LINE
 HV7339'EAST OF THE STATION.
 HV7339'
 HV7339'REFERENCE MARK NO. 2 IS NORTH NORTHWEST OF THE STATION, 2 FEET
 HV7339'EAST OF THE RIVER BANK.  IT IS FLUSH WITH THE GROUND AND THE DISK
 HV7339'IS STAMPED BUENA 2 1943 NO. 2.
 HV7339'
 HV7339'NO AZIMUTH MARK WAS LOCATED.  HOWEVER, ALL STATIONS OBSERVED UPON
 HV7339'WERE VISIBLE FROM THE GROUND AT BOTH ENDS.  STATION HALLOWING
 HV7339'MDSFCIS LOCATED ON THE SAME SIDE OF THE RIVER AT THE HOLLAND POINT
 HV7339'WHARF AND FOR THIS REASON WILL PROBABLY MAKE THE BEST AZIMUTH MARK.
 HV7339'
 HV7339'TO REACH THE STATION FROM PRINCE FREDERICK GO SOUTHWESTERLY TOWARD
 HV7339'THE BENEDICT FERRY FOR 2 MILES TO BARSTOW.  TURN RIGHT ON A GRAVEL
 HV7339'ROAD FOR 1.3 MILES TO A T.  JOG LEFT, THEN TURN RIGHT AND GO 1.0
 HV7339'MILE TO A WHITE BOARD GATE STRAIGHT AHEAD WHERE THE ROAD CURVES TO
 HV7339'THE RIGHT.  PASS THROUGH GATE ON TO LAWN AND THE STATION AS DESCRIBED.
 HV7339'
 HV7339'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT CITY (MSFC).
 HV7339'
 HV7339'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT FODDER R.M. (MSFS).
 HV7339'
 HV7339'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT PRINCE 2.
 HV7339'
 HV7339'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT HALLOWING (MSFC).
 HV7339'
 HV7339'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 HV7339
 HV7339                          STATION RECOVERY (1945)
 HV7339
 HV7339'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945 (FLP)
 HV7339'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.
 HV7339'DISTANCES TO REFERENCE MARKS WERE MEASURED AND CHECKED.  THE
 HV7339'DESCRIPTION IS ADEQUATE EXCEPT THAT REFERENCE MARK 2, A BRONZE
 HV7339'DISK, IS STAMPED BUENA 2 1943 NO 1.
 HV7339
 HV7339                          STATION RECOVERY (1960)
 HV7339
 HV7339'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV7339'STATION MARK AND REFERENCE MARK NO.1 RECOVERED IN GOOD CONDITION.
 HV7339'REFERENCE MARK NO.2 HAS BEEN COVERED WITH A SLAB OF CONCRETE AND A
 HV7339'SMALL TRIPOD.  THE SLAB WAS NOT REMOVED BY THIS PARTY.  THE
 HV7339'PUBLISHED DESCRIPTION IS ADEQUATE WITH THE FOLLOWING
 HV7339'ADDITIONS--STATION IS 32.8 FT. SW OF THE SW CORNER OF HOUSE AND 5
 HV7339'FT. E OF BLUFF.
 HV7339
 HV7339                          STATION RECOVERY (1982)
 HV7339
 HV7339'RECOVERY NOTE BY MD DEPT OF NAT RES 1982 (LW)
 HV7339'STA. AND RMS NOT RECOVERED.  PROPERTY OWNERS STATE THAT MARK HAS
 HV7339'BEEN WASHED OUT FOR AT LEAST 10 YEARS.  ALL LAND IN VICINITY OF
 HV7339'MARKS HAS BEEN ERODED AND LATER BANK FILLED WHEN BULKHEADING WAS
 HV7339'PUT IN IN FRONT OF HOUSE RECOMMEND THAT STATION AND RMS BE
 HV7339'CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5813 ***********************************************************************
 HV5813  DESIGNATION -  BUFF
 HV5813  PID         -  HV5813
 HV5813  STATE/COUNTY-  MD/QUEEN ANNES
 HV5813  COUNTRY     -  US
 HV5813  USGS QUAD   -  QUEENSTOWN (2016)
 HV5813
 HV5813                         *CURRENT SURVEY CONTROL
 HV5813  ______________________________________________________________________
 HV5813* NAD 83(1991) POSITION- 38 58 23.45839(N) 076 14 54.11992(W)   ADJUSTED
 HV5813* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5813  ______________________________________________________________________
 HV5813  GEOID HEIGHT    -        -33.716 (meters)                     GEOID18
 HV5813  LAPLACE CORR    -         -3.74  (seconds)                    DEFLEC18
 HV5813  HORZ ORDER      -  SECOND
 HV5813
 HV5813.The horizontal coordinates were established by classical geodetic methods
 HV5813.and adjusted by the National Geodetic Survey in January 1992.
 HV5813
 HV5813.The orthometric height was scaled from a topographic map.
 HV5813
 HV5813.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5813.GEOID18 height accuracy estimate available here.
 HV5813
 HV5813.Click photographs - Photos may exist for this station.
 HV5813
 HV5813.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5813
 HV5813. The following values were computed from the NAD 83(1991) position.
 HV5813
 HV5813;                    North         East     Units Scale Factor Converg.
 HV5813;SPC MD       -   145,297.381   465,131.957   MT  0.99995129   +0 28 18.3
 HV5813;SPC MD       -   476,696.49  1,526,020.43   sFT  0.99995129   +0 28 18.3
 HV5813;UTM  18      - 4,314,541.700   391,859.143   MT  0.99974400   -0 47 06.9
 HV5813
 HV5813!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5813!SPC MD       -   1.00000517  x   0.99995129  =   0.99995646
 HV5813!UTM  18      -   1.00000517  x   0.99974400  =   0.99974917
 HV5813
 HV5813:                Primary Azimuth Mark                     Grid Az
 HV5813:SPC MD       -  PINK                                     116 50 10.2
 HV5813:UTM  18      -  PINK                                     118 05 35.4
 HV5813
 HV5813_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9185914541(NAD 83)
 HV5813
 HV5813|---------------------------------------------------------------------|
 HV5813| PID    Reference Object                     Distance      Geod. Az  |
 HV5813|                                                           dddmmss.s |
 HV5813| HV5824 GREEN HOUSE CENTER CHIMNEY          APPROX. 2.2 KM 1055455.4 |
 HV5813| HV5780 PINK                                APPROX. 1.9 KM 1171828.5 |
 HV5813| HV5796 YELLOW STORE CHIMNEY                388.488 METERS 14332     |
 HV5813| HV5777 HIGHWAY BRIDGE TENDERS SHACK        419.581 METERS 1661308.6 |
 HV5813| HV6215 BARN CUPOLA                         APPROX. 5.7 KM 1872052.2 |
 HV5813| HV6154 SIG                                 APPROX. 0.9 KM 2953043.4 |
 HV5813| CX2147 BUFF RM 1                            18.082 METERS 30646     |
 HV5813|---------------------------------------------------------------------|
 HV5813
 HV5813                          SUPERSEDED SURVEY CONTROL
 HV5813
 HV5813  NAD 83(1986)-  38 58 23.45384(N)    076 14 54.13209(W) AD(       ) 2
 HV5813  NAD 27      -  38 58 23.05000(N)    076 14 55.29900(W) AD(       ) 2
 HV5813
 HV5813.Superseded values are not recommended for survey control.
 HV5813
 HV5813.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5813.See file dsdata.pdf to determine how the superseded data were derived.
 HV5813
 HV5813_MARKER: DS = TRIANGULATION STATION DISK
 HV5813_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV5813_STAMPING: BUFF 1932
 HV5813_MARK LOGO: CGS
 HV5813_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5813
 HV5813  HISTORY     - Date     Condition        Report By
 HV5813  HISTORY     - 1932     MONUMENTED       CGS
 HV5813  HISTORY     - 1938     GOOD             CGS
 HV5813  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5813
 HV5813                          STATION DESCRIPTION
 HV5813
 HV5813'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (JAB)
 HV5813'STATION IS ON W SIDE OF KENT ISLAND NARROWS, ABOUT 1 FOOT ABOVE
 HV5813'HIGH WATER, ABOUT 300 YARDS N OF RAILROAD BRIDGE.  IN MARSH LAND
 HV5813'ABOUT 40 YARDS W OF HIGH WATER AND ABOUT 125 YARDS ENE OF GROUP OF
 HV5813'TREES ON SLIGHT KNOLL.
 HV5813'
 HV5813'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV5813'CONCRETE, IN THE TOP OF A TILE.
 HV5813
 HV5813                          STATION RECOVERY (1938)
 HV5813
 HV5813'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV5813'STATION AND REFERENCE MARKS FOUND AS DESCRIBED AND IN GOOD ORDER.
 HV5813'STATION AND REFERENCE MARKS PROJECT 4 INCHES ABOVE THE SURFACE.
 HV5813
 HV5813                          STATION RECOVERY (1961)
 HV5813
 HV5813'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5813'STATION AND REFERENCE MARKS COULD NOT BE FOUND AFTER A THOROUGH
 HV5813'SEARCH.  IT APPEARS THAT THE STATION SITE HAS BEEN USED AS A SPOIL
 HV5813'AREA FOR DREDGING OPERATIONS AND IT MAY BE COVERED.  THERE ARE
 HV5813'INSUFFICIENT REFERENCE DISTANCES TO WARRANT DIGGING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6497 ***********************************************************************
 HV6497  DESIGNATION -  BUFF
 HV6497  PID         -  HV6497
 HV6497  STATE/COUNTY-  MD/SOMERSET
 HV6497  COUNTRY     -  US
 HV6497  USGS QUAD   -  KEDGES STRAITS (2016)
 HV6497
 HV6497                         *CURRENT SURVEY CONTROL
 HV6497  ______________________________________________________________________
 HV6497* NAD 83(1993) POSITION- 38 05 47.01498(N) 076 00 22.65890(W)   ADJUSTED
 HV6497* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6497  ______________________________________________________________________
 HV6497  GEOID HEIGHT    -        -35.819 (meters)                     GEOID18
 HV6497  LAPLACE CORR    -         -1.81  (seconds)                    DEFLEC18
 HV6497  HORZ ORDER      -  THIRD
 HV6497
 HV6497.The horizontal coordinates were established by classical geodetic methods
 HV6497.and adjusted by the National Geodetic Survey in November 1994.
 HV6497
 HV6497.The orthometric height was scaled from a topographic map.
 HV6497
 HV6497.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6497.GEOID18 height accuracy estimate available here.
 HV6497
 HV6497.Click photographs - Photos may exist for this station.
 HV6497
 HV6497.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6497
 HV6497. The following values were computed from the NAD 83(1993) position.
 HV6497
 HV6497;                    North         East     Units Scale Factor Converg.
 HV6497;SPC MD       -    48,176.416   487,167.173   MT  1.00004166   +0 37 25.3
 HV6497;SPC MD       -   158,058.79  1,598,314.30   sFT  1.00004166   +0 37 25.3
 HV6497;UTM  18      - 4,216,988.213   411,764.739   MT  0.99969588   -0 37 15.3
 HV6497
 HV6497!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6497!SPC MD       -   1.00000566  x   1.00004166  =   1.00004732
 HV6497!UTM  18      -   1.00000566  x   0.99969588  =   0.99970154
 HV6497
 HV6497:                Primary Azimuth Mark                     Grid Az
 HV6497:SPC MD       -  EGG                                      356 41 24.7
 HV6497:UTM  18      -  EGG                                      357 56 05.3
 HV6497
 HV6497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1176416988(NAD 83)
 HV6497
 HV6497|---------------------------------------------------------------------|
 HV6497| PID    Reference Object                     Distance      Geod. Az  |
 HV6497|                                                           dddmmss.s |
 HV6497| HU1890 DEAL ISLAND CHURCH SPIRE            APPROX. 8.3 KM 0374941.3 |
 HV6497| HV6483 EGG                                 APPROX. 5.0 KM 3571850.0 |
 HV6497|---------------------------------------------------------------------|
 HV6497
 HV6497                          SUPERSEDED SURVEY CONTROL
 HV6497
 HV6497  NAD 83(1991)-  38 05 47.01496(N)    076 00 22.65980(W) AD(       ) 3
 HV6497  NAD 83(1986)-  38 05 47.01516(N)    076 00 22.67891(W) AD(       ) 3
 HV6497  NAD 27      -  38 05 46.57300(N)    076 00 23.89100(W) AD(       ) 3
 HV6497  USSD        -  38 05 46.93300(N)    076 00 23.64700(W) AD(       ) 3
 HV6497
 HV6497.Superseded values are not recommended for survey control.
 HV6497
 HV6497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6497.See file dsdata.pdf to determine how the superseded data were derived.
 HV6497
 HV6497_MARKER: N = NAIL
 HV6497_SETTING: 0 = UNSPECIFIED SETTING
 HV6497_MARK LOGO: CGS
 HV6497_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6497
 HV6497  HISTORY     - Date     Condition        Report By
 HV6497  HISTORY     - 1901     MONUMENTED       CGS
 HV6497  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6497
 HV6497                          STATION DESCRIPTION
 HV6497
 HV6497'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (WIV)
 HV6497'STATION IS ON THE WESTERN SIDE OF TANGIER SOUND, ON EASTERN SIDE
 HV6497'OF S MARSH, ON PETERS POINT, 5 METERS FROM THE END OF THE POINT,
 HV6497'AND A FEW METERS SE OF THE MOUTH OF A SMALL STREAM.  STATION
 HV6497'MARKED BY NAIL IN PINE STUB INSIDE A 4-INCH TILE PIPE 2 FEET LONG,
 HV6497'SET IN CEMENT, FLANGE END DOWN.
 HV6497
 HV6497                          STATION RECOVERY (1942)
 HV6497
 HV6497'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6497'THE STATION WAS SEARCHED FOR THOROUGHLY BY THREE MEN FOR ONE HOUR,
 HV6497'BUT THE LAND HAS WASHED CONSIDERABLY AT THIS POINT AND A GREAT
 HV6497'PORTION IS NOW COVERED BY WATER.  IT IS RECOMMENDED THAT THIS
 HV6497'STATION BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7195 ***********************************************************************
 JV7195  DESIGNATION -  BUFFALO
 JV7195  PID         -  JV7195
 JV7195  STATE/COUNTY-  MD/FREDERICK
 JV7195  COUNTRY     -  US
 JV7195  USGS QUAD   -  WINFIELD (2016)
 JV7195
 JV7195                         *CURRENT SURVEY CONTROL
 JV7195  ______________________________________________________________________
 JV7195* NAD 83(2011) POSITION- 39 27 46.55022(N) 077 07 06.95958(W)   ADJUSTED
 JV7195* NAD 83(2011) ELLIP HT-   227.715 (meters)        (06/27/12)   ADJUSTED
 JV7195* NAD 83(2011) EPOCH   -  2010.00
 JV7195* NAVD 88 ORTHO HEIGHT -   259.79  (meters)      852.3   (feet) LEVELING
 JV7195  ______________________________________________________________________
 JV7195  GEOID HEIGHT    -        -32.108 (meters)                     GEOID18
 JV7195  NAD 83(2011) X  -  1,099,285.589 (meters)                     COMP
 JV7195  NAD 83(2011) Y  - -4,806,903.123 (meters)                     COMP
 JV7195  NAD 83(2011) Z  -  4,032,271.693 (meters)                     COMP
 JV7195  LAPLACE CORR    -          3.72  (seconds)                    DEFLEC18
 JV7195  VERT ORDER      -  THIRD ?
 JV7195
 JV7195  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7195  Standards:
 JV7195         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7195            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7195  -------------------------------------------------------------------
 JV7195  NETWORK    2.83   5.45           1.25   1.00   2.78      0.33934285
 JV7195  -------------------------------------------------------------------
 JV7195  Click here for local accuracies and other accuracy information.
 JV7195
 JV7195.The horizontal coordinates were established by GPS observations
 JV7195.and adjusted by the National Geodetic Survey in June 2012.
 JV7195
 JV7195.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7195.been affixed to the stable North American tectonic plate. See 
 JV7195.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7195
 JV7195.The horizontal coordinates are valid at the epoch date displayed above
 JV7195.which is a decimal equivalence of Year/Month/Day.
 JV7195
 JV7195.The orthometric height was determined by differential leveling.
 JV7195.The vertical network tie was performed by a horz. field party for horz.
 JV7195.obs reductions. Reset procedures were used to establish the elevation.
 JV7195
 JV7195.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7195.GEOID18 height accuracy estimate available here.
 JV7195
 JV7195.Click photographs - Photos may exist for this station.
 JV7195
 JV7195.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7195
 JV7195.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7195
 JV7195.The ellipsoidal height was determined by GPS observations
 JV7195.and is referenced to NAD 83.
 JV7195
 JV7195. The following values were computed from the NAD 83(2011) position.
 JV7195
 JV7195;                    North         East     Units Scale Factor Converg.
 JV7195;SPC MD       -   199,405.901   389,793.381   MT  1.00000229   -0 04 28.0
 JV7195;SPC MD       -   654,217.53  1,278,847.12   sFT  1.00000229   -0 04 28.0
 JV7195;UTM  18      - 4,370,292.768   317,740.079   MT  1.00000901   -1 20 48.9
 JV7195
 JV7195!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7195!SPC MD       -   0.99996428  x   1.00000229  =   0.99996657
 JV7195!UTM  18      -   0.99996428  x   1.00000901  =   0.99997329
 JV7195
 JV7195_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1774070292(NAD 83)
 JV7195
 JV7195                          SUPERSEDED SURVEY CONTROL
 JV7195
 JV7195  NAD 83(2007)-  39 27 46.55052(N)    077 07 06.96109(W) AD(2002.00) 0
 JV7195  ELLIP H (02/10/07)  227.721  (m)                       GP(2002.00)    
 JV7195  ELLIP H (08/30/02)  227.698  (m)                       GP(       ) 4 2
 JV7195  NAD 83(1991)-  39 27 46.55134(N)    077 07 06.96214(W) AD(       ) 1
 JV7195  ELLIP H (02/09/94)  227.645  (m)                       GP(       ) 4 1
 JV7195  NAVD 88             259.81   (m)          852.4    (f) LEVELING    3  
 JV7195
 JV7195.Superseded values are not recommended for survey control.
 JV7195
 JV7195.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7195.See file dsdata.pdf to determine how the superseded data were derived.
 JV7195
 JV7195_MARKER: DD = SURVEY DISK
 JV7195_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7195_STAMPING: BUFFALO 1993
 JV7195_MARK LOGO: MD-021
 JV7195_PROJECTION: FLUSH
 JV7195_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7195+STABILITY: SURFACE MOTION
 JV7195_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7195+SATELLITE: SATELLITE OBSERVATIONS - July 11, 2019
 JV7195
 JV7195  HISTORY     - Date     Condition        Report By
 JV7195  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7195  HISTORY     - 19951127 GOOD             MCCRON
 JV7195  HISTORY     - 20010727 GOOD             DMW
 JV7195  HISTORY     - 20050703 GOOD             NAGEL
 JV7195  HISTORY     - 20140601 GOOD             RODCON
 JV7195  HISTORY     - 20170802 GOOD             NGS
 JV7195  HISTORY     - 20190711 GOOD             NGS
 JV7195
 JV7195                          STATION DESCRIPTION
 JV7195
 JV7195'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7195'FROM THE INTERSECTION OF MD RTE 15 AND MD RTE 26 (LIBERTY ROAD) IN
 JV7195'FREDERICK MD, PROCEED EAST ON RTE 26 FOR 16 MILES (25.7 KM) TO THE
 JV7195'INTERSECTION WITH BUFFALO ROAD WHICH IS THE BORDER BETWEEN FREDERICK
 JV7195'COUNTY AND CARROLL COUNTY. STATION IS ON THE RIGHT IN THE SOUTHEAST
 JV7195'QUADRANT OF THE INTERSECTION. STATION IS 45 FEET (13.7 M) FROM THE
 JV7195'STOP SIGN FOR BUFFALO ROAD WITH LIBERTY ROAD AND 35 FEET (10.7 M)
 JV7195'FROM ANOTHER STOP SIGN FOR AN EAST-WEST ROAD PARALELLING LIBERTY ROAD.
 JV7195'STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND CONCRETE
 JV7195'MONUMENT SET FLUSH WITH THE GROUND.
 JV7195
 JV7195                          STATION RECOVERY (1995)
 JV7195
 JV7195'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV7195'STATION IS LOCATED ABOUT 10 MI (16.1 KM) SOUTHWEST OF THE CENTER OF
 JV7195'WESTMINSTER AND ABOUT 7 MI (11.3 KM) NORTHEAST OF MOUNT AIRY. TO REACH
 JV7195'STATION FROM THE INTERSECTION OF MD ROUTE 26 (LIBERTY ROAD) AND MD
 JV7195'ROUTE 27 (RIDGE ROAD) GO WEST ON MD ROUTE 26 FOR 1.75 MI (2.82 KM) TO
 JV7195'THE INTERSECTION WITH BUFFALO ROAD AND THE STATION ON THE LEFT.
 JV7195'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 JV7195'SET FLUSH WITH THE GROUND. IT IS 45.0 FT (13.7 M) NORTHWEST OF A STOP
 JV7195'SIGN AND 35.0 FT (10.7 M) NORTHEAST OF A STOP SIGN.
 JV7195
 JV7195                          STATION RECOVERY (2001)
 JV7195
 JV7195'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV7195'RECOVERED IN GOOD CONDITION.
 JV7195
 JV7195                          STATION RECOVERY (2005)
 JV7195
 JV7195'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2005 (TJF)
 JV7195'RECOVERED IN GOOD CONDITION.
 JV7195
 JV7195                          STATION RECOVERY (2014)
 JV7195
 JV7195'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV7195'RECOVERED IN GOOD CONDITION.
 JV7195
 JV7195                          STATION RECOVERY (2017)
 JV7195
 JV7195'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV7195'RECOVERED IN GOOD CONDITION.
 JV7195
 JV7195                          STATION RECOVERY (2019)
 JV7195
 JV7195'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV7195'THE STATION IS LOCATED ABOUT 6.7 MI (10.8 KM) EAST-SOUTHEAST OF
 JV7195'LIBERTYTOWN, 5.5 MI (8.8 KM) SOUTH OF NEW WINDSOR AND 3.6 MI (5.8 KM)
 JV7195'WEST-NORTHWEST OF WINFIELD.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV7195'
 JV7195'THE STATION IS ON THE WEST SIDE OF A LONE PINE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1499 ***********************************************************************
 HU1499  DESIGNATION -  BUFFING
 HU1499  PID         -  HU1499
 HU1499  STATE/COUNTY-  MD/WORCESTER
 HU1499  COUNTRY     -  US
 HU1499  USGS QUAD   -  OCEAN CITY (2016)
 HU1499
 HU1499                         *CURRENT SURVEY CONTROL
 HU1499  ______________________________________________________________________
 HU1499* NAD 83(1991) POSITION- 38 18 59.92327(N) 075 06 40.85909(W)   ADJUSTED
 HU1499* NAVD 88 ORTHO HEIGHT -     0.6   (meters)        2.    (feet) VERTCON3
 HU1499  ______________________________________________________________________
 HU1499  GEOID HEIGHT    -        -36.072 (meters)                     GEOID18
 HU1499  LAPLACE CORR    -         -0.58  (seconds)                    DEFLEC18
 HU1499  HORZ ORDER      -  THIRD
 HU1499
 HU1499.The horizontal coordinates were established by classical geodetic methods
 HU1499.and adjusted by the National Geodetic Survey in January 1992.
 HU1499
 HU1499.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1499.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1499
 HU1499.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1499.GEOID18 height accuracy estimate available here.
 HU1499
 HU1499.Click photographs - Photos may exist for this station.
 HU1499
 HU1499.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1499
 HU1499. The following values were computed from the NAD 83(1991) position.
 HU1499
 HU1499;                    North         East     Units Scale Factor Converg.
 HU1499;SPC MD       -    73,859.034   565,156.739   MT  0.99999715   +1 11 07.4
 HU1499;SPC MD       -   242,319.18  1,854,185.07   sFT  0.99999715   +1 11 07.4
 HU1499;UTM  18      - 4,240,954.293   490,265.973   MT  0.99960117   -0 04 08.5
 HU1499
 HU1499!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1499!SPC MD       -   1.00000557  x   0.99999715  =   1.00000272
 HU1499!UTM  18      -   1.00000557  x   0.99960117  =   0.99960674
 HU1499
 HU1499:                Primary Azimuth Mark                     Grid Az
 HU1499:SPC MD       -  FOLLY                                    179 48 06.4
 HU1499:UTM  18      -  FOLLY                                    181 03 22.3
 HU1499
 HU1499_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9026540954(NAD 83)
 HU1499
 HU1499|---------------------------------------------------------------------|
 HU1499| PID    Reference Object                     Distance      Geod. Az  |
 HU1499|                                                           dddmmss.s |
 HU1499| HU1488 OCEAN CITY CEN MUNICIPAL TANK       APPROX. 4.2 KM 0402035.3 |
 HU1499| HU1490 OCEAN CITY S MUNICIPAL TANK         APPROX. 2.3 KM 0570403.6 |
 HU1499| HU1491 OCEAN CITY CG TOWER 146             APPROX. 2.3 KM 0643850.8 |
 HU1499| HU1519 OCEAN CITY INLET JETTY LT 5         APPROX. 2.5 KM 0700542.0 |
 HU1499| DC7865 BUFFING RM 1                          7.034 METERS 12650     |
 HU1499| HU1498 FOLLY                               APPROX. 3.1 KM 1805913.8 |
 HU1499| DC7866 BUFFING RM 2                          7.694 METERS 30705     |
 HU1499|---------------------------------------------------------------------|
 HU1499
 HU1499                          SUPERSEDED SURVEY CONTROL
 HU1499
 HU1499  NAD 83(1986)-  38 18 59.90623(N)    075 06 40.88872(W) AD(       ) 3
 HU1499  NAD 27      -  38 18 59.49369(N)    075 06 42.22230(W) AD(       ) 3
 HU1499  USSD        -  38 18 59.57200(N)    075 06 42.00900(W) AD(       ) 3
 HU1499  NGVD 29 (07/19/86)    0.8    (m)            3.     (f) VERT ANG       
 HU1499
 HU1499.Superseded values are not recommended for survey control.
 HU1499
 HU1499.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1499.See file dsdata.pdf to determine how the superseded data were derived.
 HU1499
 HU1499_MARKER: H = DRILL HOLE
 HU1499_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1499
 HU1499  HISTORY     - Date     Condition        Report By
 HU1499  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1499  HISTORY     - 1929     GOOD             CGS
 HU1499  HISTORY     - 1934     GOOD             CGS
 HU1499  HISTORY     - 1942     GOOD             CGS
 HU1499  HISTORY     - 1951     GOOD             CGS
 HU1499  HISTORY     - 1962     GOOD             CGS
 HU1499  HISTORY     - 1962     GOOD             CGS
 HU1499  HISTORY     - 1973     GOOD             MDDNR
 HU1499  HISTORY     - 1977     GOOD             NGS
 HU1499
 HU1499                          STATION DESCRIPTION
 HU1499
 HU1499'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1499'ON THE WESTERN SHORE OF SINEPUXENT BAY, ABOUT 1-1/2 MILES SW OF
 HU1499'OCEAN CITY, ON LOWLAND ABOUT 200 YARDS NE OF A KNOLL KNOWN
 HU1499'LOCALLY AS STEAM MILL HILL, ABOUT 2 FEET ABOVE HIGH WATER, 25
 HU1499'YARDS W FROM SHORE, 65 YARDS NW OF WHERE WIRE FENCE MEETS SHORE,
 HU1499'30 YARDS NE OF NEAREST POINT OF FENCE, AND 60 YARDS FROM JUNCTION
 HU1499'OF FENCE AND PINE WOODS.  STATION MARK IS CENTER OF STANDARD
 HU1499'CEMENT MONUMENT OF THE MARYLAND SHELL FISH SURVEY WHICH
 HU1499'PROJECTS 3 TO 5 INCHES ABOVE THE SURFACE
 HU1499'WHICH IS MADE OF CONCRETE 2
 HU1499'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1499'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1499'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1499'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1499'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1499'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1499'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1499'THE LOCATION OF THE STATION.
 HU1499'
 HU1499'DISTANCES AND AZIMUTHS OF POINTS OF REFERENCE ARE AS
 HU1499'FOLLOWS--LEFT CHIMNEY OF KELLEYS BROWN HOUSE, 1 MILE, S 20 DEG
 HU1499'20 MIN W.  CHIMNEY AT RIGHT END OF BUFFINGTONS HOUSE, 200 YARDS,
 HU1499'S 41 DEG 07 MIN W.  FENCE AND WOODS, 60 YARDS, N 73 DEG 52 MIN W.
 HU1499'CHIMNEY ON TOP OF HIP-ROOF HOUSE, 1/2 MILE, N 35 DEG 29 MIN W.
 HU1499'RIGHT TANGENT OF WOODS, 60 YARDS, N 35 DEG 29 MIN W.  CROPPERS
 HU1499'ICE-PLANT STACKS, 1-1/4 MILES, N 60 DEG 36 MIN E.  LEFT END OF FENCE
 HU1499'AT SHORE, 65 YARDS, S 11 DEG 42 MIN E.
 HU1499
 HU1499                          STATION RECOVERY (1929)
 HU1499
 HU1499'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (CFE)
 HU1499'STATION RECOVERED IN GOOD CONDITION.  IT IS NOW AT THE EDGE OF
 HU1499'THE FIRST POINT OF PINE WOODS N OF THE BUFFINGTON HOUSE.  SMALL
 HU1499'SCRUB PINES HAVE GROWN UP AROUND IT.  THIS POINT OF PINES CAN
 HU1499'EASILY BE IDENTIFIED AND MAKES OUT TOWARDS THE SHORE.
 HU1499
 HU1499                          STATION RECOVERY (1934)
 HU1499
 HU1499'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1499'STATION RECOVERED IN GOOD CONDITION.
 HU1499'
 HU1499'THE DESCRIPTION SHOULD READ AS FOLLOWS--
 HU1499'
 HU1499'ON THE W SHORE OF SINEPUXENT BAY, ABOUT 1-1/2 MILES SW FROM
 HU1499'OCEAN CITY, ON THE BUFFINGTON FARM, ON A LOW WOODED POINT ABOUT
 HU1499'160 METERS NE OF THE BUFFINGTON FARMHOUSE.  THIS POINT IS THE
 HU1499'FIRST POINT OF PINE WOODS N OF THE BUFFINGTON HOUSE, AND THE
 HU1499'STATION IS AT ITS EASTERN EDGE AMONG SMALL SCRUB PINES.  THE
 HU1499'STATION IS ABOUT 2 FEET ABOVE HIGH WATER, ABOUT 23 METERS W OF
 HU1499'THE HIGH-WATER LINE, ABOUT 63 METERS NW OF JUNCTION OF OLD
 HU1499'FENCE LINE WITH SHORE, AND ABOUT 30 METERS NE FROM NEAREST PART
 HU1499'OF FENCE LINE.
 HU1499'
 HU1499'THE STATION MARK IS THE CENTER OF STANDARD CEMENT MONUMENT OF
 HU1499'THE MARYLAND SHELL FISH SURVEY, WHICH PROJECTS 3 TO 5 INCHES
 HU1499'ABOVE THE SURFACE
 HU1499'WHICH IS MADE OF CONCRETE 2
 HU1499'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1499'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1499'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1499'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1499'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1499'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1499'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1499'THE LOCATION OF THE STATION.
 HU1499'
 HU1499'TO REACH STATION FROM OCEAN CITY, MARYLAND, GO W ON PAVED ROAD
 HU1499'TO JUNCTION WITH SINEPUXENT NECK ROAD.  TURN LEFT AND GO S FOR
 HU1499'ABOUT 1-1/2 MILES TO BUFFINGTON FARM ROAD, THEN TURN E ON THIS
 HU1499'ROAD AND PROCEED TO SINEPUXENT BAY.
 HU1499
 HU1499                          STATION RECOVERY (1942)
 HU1499
 HU1499'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1499'THE STATION IS LOCATED ON THE WESTERN SHORE OF SINEPUXENT BAY,
 HU1499'ABOUT 1-1/2 MILES SW OF OCEAN CITY, ON A LOW WOODED POINT OF LAND
 HU1499'ABOUT 160 METERS NE OF A HOUSE KNOWN LOCALLY AS THE OLD
 HU1499'BUFFINGTON PLACE 23 METERS W OF HIGH-WATER LINE, 51.3 METERS NW
 HU1499'OF INTERSECTION OF AN OLD FENCE AND THE BAY SHORE, AND 17.0
 HU1499'METERS E OF THE POINT OF THE PINE WOODS.  THE STATION IS THE
 HU1499'CENTER OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH
 HU1499'IS A 9-INCH SQUARE CONCRETE MONUMENT, WHICH IS SET FLUSH WITH
 HU1499'THE GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK
 HU1499'IN THE TOP.  THE STATION IS IN GOOD CONDITION.
 HU1499
 HU1499                          STATION RECOVERY (1951)
 HU1499
 HU1499'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951 (HAP)
 HU1499'STATION RECOVERED IN GOOD CONDITION.  1934 DESCRIPTION IS
 HU1499'ADEQUATE EXCEPT FOR THE FOLLOWING CHANGES--
 HU1499'
 HU1499'STATION IS NOT IN SCRUB PINES.  IT IS ABOUT 5 M. E OF SCRUB
 HU1499'PINES SURROUNDED BY 4-FT.-HIGH BRUSH.
 HU1499
 HU1499                          STATION RECOVERY (1962)
 HU1499
 HU1499'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (WMR)
 HU1499'THE STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.  THE
 HU1499'STATION IS NEAR THE EAST END OF A LOW WOODED POINT IN A FRINGE
 HU1499'OF BRUSH.
 HU1499'
 HU1499'IT IS 75 FT. NW OF THE EXTREME E END OF THE POINT, 33 FT S OF N
 HU1499'EDGE OF MARSH, 20 FT N OF S EDGE OF MARSH, 36 FT ESE OF THE MOST
 HU1499'EASTERLY PINE TREE ON THE POINT.  THE MARK PROJECTS ABOUT 1 INCH.
 HU1499'
 HU1499'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND
 HU1499'STATE HIGHWAY 611 (STEVEN DECATOR RD.) ABOUT 1-1/2 MILES WEST OF
 HU1499'OCEAN CITY, GO SOUTH ON 611 FOR 1.45 MILES TO A SIDE ROAD ON THE
 HU1499'LEFT AND SIGN OCEAN CITY AIRPORT.  TURN LEFT (E) ON SURFACED ROAD
 HU1499'FOR 0.15 MILES TO A FORK, BEAR LEFT ON A WOODS ROAD
 HU1499'FOR 0.1 MILE TO A FORK, THEN BEAR RIGHT AND FOLLOW WOODS ROAD
 HU1499'EASTERLY FOR ABOUT 1/2 MILE TO THE END OF A SANDY POINT AND AN
 HU1499'OLD ABANDONED BOAT LANDING ON THE LEFT.
 HU1499'
 HU1499'THE STATION IS ABOUT 150 YARDS TO THE NNE OF THE W END OF THE
 HU1499'BOAT LANDING.
 HU1499
 HU1499                          STATION RECOVERY (1962)
 HU1499
 HU1499'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1499'THE STATION WAS RECOVERED AND FOUND IN GOOD CONDITION, AN RM 1
 HU1499'AND 2 WERE SET AT THIS TIME.  A NEW TO REACH AS FOLLOWS.
 HU1499'
 HU1499'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 WITH
 HU1499'STATE HIGHWAY 611, ABOUT 1.5 MILES WEST OF OCEAN CITY, GO SOUTH
 HU1499'ON HIGHWAY 611 FOR 1.45 MILES TO A SURFACED SIDE ROAD LEFT, TURN
 HU1499'LEFT ON THE AIRPORT ROAD FOR 0.15 MILE TO A DIM FORK, BEAR LEFT
 HU1499'ON A WOODS ROAD FOR 0.1 MILE TO A FORK.  (THIS IS ETT DUE TO
 HU1499'DOWNED TIMBER) BEAR RIGHT AND CONTINUE EASTERLY ON A WOODS ROAD
 HU1499'FOR ABOUT 1/2 MILE TO THE END OF THE ROAD AND AN OLD BOAT
 HU1499'LANDING ON THE LEFT.  THE STATION IS ABOUT 150 YARDS
 HU1499'NORTH-NORTHEAST ACROSS A MARSH.
 HU1499'
 HU1499'THE STATION IS A 8 X 8 INCH SQUARE CONCRETE POST, STAMPED MF FC
 HU1499'USCS, PROJECTING 1 INCH FROM THE GROUND.  IT IS 53.0 FEET WEST
 HU1499'OF WEST EDGE OF BAY.  35.0 FEET EAST OF A 6 INCH PINE TREE.  5.1
 HU1499'FEET NORTH OF A STANDARD METAL WITNESS POST.
 HU1499'
 HU1499'REFERENCE MARK NO. 1 IS A STANDARD DISK STAMPED BUFFING NO. 1
 HU1499'1908 SET IN 10 X 10 INCH SQUARE CONCRETE MONUMENT, THAT IS FLUSH
 HU1499'WITH THE GROUND.  IT IS 32.0 FEET WEST OF THE WEST EDGE OF
 HU1499'BAY.  57.8 FEET EAST OF A 6 INCH PINE TREE.  25.5 FEET
 HU1499'WEST-NORTHWEST OF A STANDARD METAL WITNESS POST.
 HU1499'
 HU1499'REFERENCE MARK NO. 2 IS A STANDARD DISK STAMPED BUFFING NO. 2
 HU1499'1908, SET IN A 10 X 10 INCH SQUARE CONCRETE MONUMENT, THAT IS
 HU1499'FLUSH WITH THE GROUND.  IT IS 78.5 FEET WEST OF THE WEST EDGE OF
 HU1499'THE BAY.  125.0 FEET EAST-NORTHEAST OF A 6 INCH PINE TREE.  23.6
 HU1499'FEET EAST-NORTHEAST OF A STANDARD METAL WITNESS POST.
 HU1499'
 HU1499'HEIGHT OF LIGHT ABOVE STATION MARK 1.36 METERS.
 HU1499
 HU1499                          STATION RECOVERY (1973)
 HU1499
 HU1499'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HU1499'MDSFC-USCS (CAST) GOOD
 HU1499'
 HU1499'BUFFING 1908 NO 1 GOOD
 HU1499'
 HU1499'BUFFING 1908 NO 2 GOOD
 HU1499'
 HU1499'RECOVERED AS DESCRIBED WITH CHANGES--NEW WITNESS POST AND SIGN
 HU1499'PLACED ON E SIDE OF STATION.  REMAINS OF OLD WITNESS POST PLACED
 HU1499'AT RM 2.  STA. IS FLUSH WITH GROUND.
 HU1499
 HU1499                          STATION RECOVERY (1977)
 HU1499
 HU1499'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (JVT)
 HU1499'THE STATION POST AND REFERENCE MARKS 1 AND 2 WERE RECOVERED AS
 HU1499'DESCRIBED AND FOUND TO BE IN GOOD CONDITION.  THE STATION WAS
 HU1499'REACHED BY BOAT AND THE ROUTE TO THE STATION WAS NOT VERIFIED.
 HU1499'
 HU1499'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1499'ABOUT 1-1/2 MILES SW OF OCEAN CITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3143 ***********************************************************************
 DS3143  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3143  DESIGNATION -  BUICK 176
 DS3143  PID         -  DS3143
 DS3143  STATE/COUNTY-  MD/HARFORD
 DS3143  COUNTRY     -  US
 DS3143  USGS QUAD   -  PERRYMAN (2016)
 DS3143
 DS3143                         *CURRENT SURVEY CONTROL
 DS3143  ______________________________________________________________________
 DS3143* NAD 83(2011) POSITION- 39 27 55.57228(N) 076 12 18.68389(W)   ADJUSTED
 DS3143* NAD 83(2011) ELLIP HT-   -18.147 (meters)        (12/12/24)   ADJUSTED
 DS3143* NAD 83(2011) EPOCH   -  2010.00
 DS3143* NAVD 88 ORTHO HEIGHT -    15.00  (meters)       49.2   (feet) GPS OBS
 DS3143  ______________________________________________________________________
 DS3143  GEOID HEIGHT    -        -33.163 (meters)                     GEOID18
 DS3143  NAD 83(2011) X  -  1,175,686.926 (meters)                     COMP
 DS3143  NAD 83(2011) Y  - -4,788,412.138 (meters)                     COMP
 DS3143  NAD 83(2011) Z  -  4,032,330.236 (meters)                     COMP
 DS3143  LAPLACE CORR    -         -2.40  (seconds)                    DEFLEC18
 DS3143
 DS3143  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3143  Standards:
 DS3143         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3143            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3143  -------------------------------------------------------------------
 DS3143  NETWORK    1.16   1.69           0.50   0.44   0.86     -0.13659899
 DS3143  -------------------------------------------------------------------
 DS3143  Click here for local accuracies and other accuracy information.
 DS3143
 DS3143.The horizontal coordinates were established by GPS observations
 DS3143.and adjusted by the MD DEPT OF TRANSP in December 2024.
 DS3143
 DS3143.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3143.been affixed to the stable North American tectonic plate. See 
 DS3143.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3143
 DS3143.The horizontal coordinates are valid at the epoch date displayed above
 DS3143.which is a decimal equivalence of Year/Month/Day.
 DS3143
 DS3143.The orthometric height was determined by GPS observations and a
 DS3143.high-resolution geoid model using precise GPS observation and
 DS3143.processing techniques.
 DS3143
 DS3143.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3143.GEOID18 height accuracy estimate available here.
 DS3143
 DS3143.Click photographs - Photos may exist for this station.
 DS3143
 DS3143.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3143
 DS3143.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3143
 DS3143.The ellipsoidal height was determined by GPS observations
 DS3143.and is referenced to NAD 83.
 DS3143
 DS3143. The following values were computed from the NAD 83(2011) position.
 DS3143
 DS3143;                    North         East     Units Scale Factor Converg.
 DS3143;SPC MD       -   199,975.268   468,397.499   MT  1.00000274   +0 29 55.9
 DS3143;SPC MD       -   656,085.53  1,536,734.13   sFT  1.00000274   +0 29 55.9
 DS3143;UTM  18      - 4,369,121.774   396,326.166   MT  0.99973233   -0 45 58.0
 DS3143
 DS3143!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3143!SPC MD       -   1.00000285  x   1.00000274  =   1.00000559
 DS3143!UTM  18      -   1.00000285  x   0.99973233  =   0.99973518
 DS3143
 DS3143_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9632669121(NAD 83)
 DS3143
 DS3143                          SUPERSEDED SURVEY CONTROL
 DS3143
 DS3143.No superseded survey control is available for this station.
 DS3143
 DS3143_MARKER: DD = SURVEY DISK
 DS3143_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS3143_STAMPING: BUICK 176 1966
 DS3143_MARK LOGO: MD-025
 DS3143_PROJECTION: FLUSH
 DS3143_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS3143_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3143+SATELLITE: SATELLITE OBSERVATIONS - December 11, 2023
 DS3143
 DS3143  HISTORY     - Date     Condition        Report By
 DS3143  HISTORY     - 19660101 MONUMENTED       MD-025
 DS3143  HISTORY     - 20231211 GOOD             MDSHA
 DS3143
 DS3143                          STATION DESCRIPTION
 DS3143
 DS3143'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DS3143'THE MARK IS LOCATED ABOUT 5.8 MI (9.3 KM) NORTHEAST OF EDGEWOOD, 3.7
 DS3143'MI (6.0 KM) SOUTHWEST OF ABERDEEN AND IN THE TOWN OF PERRYMAN, MD.
 DS3143'
 DS3143'TO REACH THE MARK FROM THE INTERSECTION OF US 40 (PULASKI HIGHWAY) AND
 DS3143'SPESUTIA ROAD PROCEED SOUTH ON SPESUTIA ROAD FOR 1.23 KM (0.76 MI) TO
 DS3143'THE INTERSECTION WITH PERRYMAN ROAD.  TURN RIGHT ON PERRYMAN ROAD AND
 DS3143'PROCEED FOR 0.14 KM (0.09 MI) AND TURN RIGHT TO CONTINUE ON PERRYMAN
 DS3143'ROAD.PROCEED FOR 0.87 KM (0.54 MI) TO THE MARK ON THE RIGHT.
 DS3143'
 DS3143'THE MARK IS 129.8 FT (39.6 M) NORTH-NORTHEAST OF A FIRE HYDRANT, 56.1
 DS3143'FT (17.1 M) WEST OF A UTILITY POLE NUMBERED BGE 76724, 17.5 FT (5.3 M)
 DS3143'NORTHWEST OF THE CENTERLINE OF PERRYMAN ROAD, 5.1 FT (1.6 M) NORTHEAST
 DS3143'OF A PLASTIC PANEL FENCE SET IN THE TOP OF A 5-IN (13 CM) ROUND
 DS3143'CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3940 ***********************************************************************
 JU3940  DESIGNATION -  BULL 1898
 JU3940  PID         -  JU3940
 JU3940  STATE/COUNTY-  MD/CECIL
 JU3940  COUNTRY     -  US
 JU3940  USGS QUAD   -  NORTH EAST (2016)
 JU3940
 JU3940                         *CURRENT SURVEY CONTROL
 JU3940  ______________________________________________________________________
 JU3940* NAD 83(1991) POSITION- 39 30 36.77211(N) 075 59 08.69243(W)   ADJUSTED
 JU3940* NAVD 88 ORTHO HEIGHT -    21.    (meters)       69.    (feet) SCALED
 JU3940  ______________________________________________________________________
 JU3940  GEOID HEIGHT    -        -33.287 (meters)                     GEOID18
 JU3940  LAPLACE CORR    -          0.01  (seconds)                    DEFLEC18
 JU3940  HORZ ORDER      -  THIRD
 JU3940
 JU3940.The horizontal coordinates were established by classical geodetic methods
 JU3940.and adjusted by the National Geodetic Survey in January 1992.
 JU3940
 JU3940.The orthometric height was scaled from a topographic map.
 JU3940
 JU3940.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3940.GEOID18 height accuracy estimate available here.
 JU3940
 JU3940.Click photographs - Photos may exist for this station.
 JU3940
 JU3940.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3940
 JU3940. The following values were computed from the NAD 83(1991) position.
 JU3940
 JU3940;                    North         East     Units Scale Factor Converg.
 JU3940;SPC MD       -   205,133.547   487,225.693   MT  1.00001109   +0 38 11.7
 JU3940;SPC MD       -   673,008.98  1,598,506.29   sFT  1.00001109   +0 38 11.7
 JU3940;UTM  18      - 4,373,861.928   415,257.969   MT  0.99968841   -0 37 37.9
 JU3940
 JU3940!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3940!SPC MD       -   1.00000196  x   1.00001109  =   1.00001305
 JU3940!UTM  18      -   1.00000196  x   0.99968841  =   0.99969037
 JU3940
 JU3940:                Primary Azimuth Mark                     Grid Az
 JU3940:SPC MD       -  CARPENTERS POINT 2 1898                  329 42 17.7
 JU3940:UTM  18      -  CARPENTERS POINT 2 1898                  330 58 07.3
 JU3940
 JU3940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1525773861(NAD 83)
 JU3940
 JU3940|---------------------------------------------------------------------|
 JU3940| PID    Reference Object                     Distance      Geod. Az  |
 JU3940|                                                           dddmmss.s |
 JU3940| JV4781 CARPENTERS POINT 2 1898             APPROX. 3.7 KM 3302029.4 |
 JU3940|---------------------------------------------------------------------|
 JU3940
 JU3940                          SUPERSEDED SURVEY CONTROL
 JU3940
 JU3940  NAD 83(1986)-  39 30 36.76432(N)    075 59 08.69786(W) AD(       ) 3
 JU3940  NAD 27      -  39 30 36.36100(N)    075 59 09.89700(W) AD(       ) 3
 JU3940  USSD        -  39 30 36.74300(N)    075 59 09.74300(W) AD(       ) 3
 JU3940
 JU3940.Superseded values are not recommended for survey control.
 JU3940
 JU3940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3940.See file dsdata.pdf to determine how the superseded data were derived.
 JU3940
 JU3940_MARKER: Z = SEE DESCRIPTION
 JU3940_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JU3940_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3940
 JU3940  HISTORY     - Date     Condition        Report By
 JU3940  HISTORY     - 1898     MONUMENTED       CGS
 JU3940  HISTORY     - 1937     GOOD             CGS
 JU3940
 JU3940                          STATION DESCRIPTION
 JU3940
 JU3940'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JU3940'ON EASTERN SIDE OF NOTHERN PART OF CHESAPEAKE BAY, NEAR THE FOOT
 JU3940'OF BULL MOUNTAIN AND ON TOP OF BLUFF.  MARKED BY TWO 6-INCH TILE
 JU3940'PIPES, SET ONE ABOVE THE OTHER, THE TOP OF THE UPPER PIPE BEING
 JU3940'6 INCHES BELOW SURFACE OF GROUND.  THE SURFACE MARK IS A 4-INCH
 JU3940'PINE STUB, ITS TOP EVEN WITH THE GROUND.
 JU3940
 JU3940                          STATION RECOVERY (1937)
 JU3940
 JU3940'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU3940'THIS STATON WAS VISITED BUT DUE TO THE INADEQUATE ORIGINAL
 JU3940'DESCRIPTION AND THE LACK OF REFERENCES, IT COULD NOT BE
 JU3940'RECOVERED.  IT IS RECOMMENDED THAT THIS STATION BE DESIGNATED
 JU3940'AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5117 ***********************************************************************
 JV5117  DESIGNATION -  BUNGAY
 JV5117  PID         -  JV5117
 JV5117  STATE/COUNTY-  MD/KENT
 JV5117  COUNTRY     -  US
 JV5117  USGS QUAD   -  ROCK HALL (2016)
 JV5117
 JV5117                         *CURRENT SURVEY CONTROL
 JV5117  ______________________________________________________________________
 JV5117* NAD 83(1991) POSITION- 39 08 39.11267(N) 076 10 50.89370(W)   ADJUSTED
 JV5117* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5117  ______________________________________________________________________
 JV5117  GEOID HEIGHT    -        -33.406 (meters)                     GEOID18
 JV5117  LAPLACE CORR    -         -2.10  (seconds)                    DEFLEC18
 JV5117  HORZ ORDER      -  THIRD
 JV5117
 JV5117.The horizontal coordinates were established by classical geodetic methods
 JV5117.and adjusted by the National Geodetic Survey in January 1992.
 JV5117
 JV5117.The orthometric height was scaled from a topographic map.
 JV5117
 JV5117.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5117.GEOID18 height accuracy estimate available here.
 JV5117
 JV5117.Click photographs - Photos may exist for this station.
 JV5117
 JV5117.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5117
 JV5117. The following values were computed from the NAD 83(1991) position.
 JV5117
 JV5117;                    North         East     Units Scale Factor Converg.
 JV5117;SPC MD       -   164,331.651   470,816.029   MT  0.99996079   +0 30 51.0
 JV5117;SPC MD       -   539,144.76  1,544,668.92   sFT  0.99996079   +0 30 51.0
 JV5117;UTM  18      - 4,333,442.410   397,958.507   MT  0.99972821   -0 44 43.7
 JV5117
 JV5117!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5117!SPC MD       -   1.00000512  x   0.99996079  =   0.99996591
 JV5117!UTM  18      -   1.00000512  x   0.99972821  =   0.99973333
 JV5117
 JV5117_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9795833442(NAD 83)
 JV5117
 JV5117|---------------------------------------------------------------------|
 JV5117| PID    Reference Object                     Distance      Geod. Az  |
 JV5117|                                                           dddmmss.s |
 JV5117| JV5111 LOCUST                              303.274 METERS 08253     |
 JV5117| JV5114 NAT                                 339.990 METERS 15139     |
 JV5117| JV5116 WHALE                               261.519 METERS 20646     |
 JV5117|---------------------------------------------------------------------|
 JV5117
 JV5117                          SUPERSEDED SURVEY CONTROL
 JV5117
 JV5117  NAD 83(1986)-  39 08 39.10721(N)    076 10 50.90513(W) AD(       ) 3
 JV5117  NAD 27      -  39 08 38.70600(N)    076 10 52.08000(W) AD(       ) 3
 JV5117  USSD        -  39 08 39.11200(N)    076 10 51.90600(W) AD(       ) 3
 JV5117
 JV5117.Superseded values are not recommended for survey control.
 JV5117
 JV5117.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5117.See file dsdata.pdf to determine how the superseded data were derived.
 JV5117
 JV5117_MARKER: H = DRILL HOLE
 JV5117_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5117_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5117+STABILITY: SURFACE MOTION
 JV5117
 JV5117  HISTORY     - Date     Condition        Report By
 JV5117  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5117  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV5117
 JV5117                          STATION DESCRIPTION
 JV5117
 JV5117'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5117'STATION IS ON THE WESTERN SHORE OF WEST FORK OF LANGFORD CREEK,
 JV5117'ON POINT AT N SIDE OF ENTRANCE TO BUNGAY CREEK, ABOUT 1-5/8 MILES
 JV5117'NW OF MAIN BODY OF LANGFORD CREEK AND 1/4 MILE W OF VICKERS
 JV5117'WHARF, ON A LOW SAND POINT, ABOUT 1 FOOT ABOVE HIGH WATER, AND
 JV5117'16 YARDS W OF EXTREME END OF POINT.
 JV5117'
 JV5117'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5117'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5117'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5117'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5117'POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED
 JV5117'WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5117'
 JV5117'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5117'FOLLOWS--W GABLE OF BARN, 1/2 MILE, S 9 DEG 40 MIN W.  N CHIMNEY OF
 JV5117'KINSLEYS HOUSE, 3/8 MILE, S 16 DEG 47 MIN W.  N CHIMNEY OF LEARYS
 JV5117'HOUSE, 1/4 MILE, S 29 DEG 41 MIN W.  N GABLE OF HOUSE, 1/2 MILE, S 32
 JV5117'DEG 05 MIN W.  S GABLE OF HOUSE, 1-3/4 MILES, N 02 DEG 38 MIN W. S
 JV5117'GABLE OF BARN, 3/4 MILE, N 29 DEG 40 MIN E. N CHIMNEY OF HOUSE,
 JV5117'1/2 MILE, N 59 DEG 57 MIN E. W CHIMNEY OF HOUSE, 3/8 MILE, N 84 DEG
 JV5117'27 MIN E.  LONE 12-INCH CEDAR TREE, 1/4 MILE, S 43 DEG 23 MIN E. LEFT
 JV5117'EDGE OF BANK ON EAGLE POINT, 7/8 MILE, S 20 DEG 56 MIN E.
 JV5117
 JV5117                          STATION RECOVERY (1939)
 JV5117
 JV5117'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5117'STATION NOT RECOVERED.  A THOROUGH SEARCH OF THE POINT AND WATER
 JV5117'AREA ADJACENT FAILED TO RECOVER THE MARK.  MR. E.C. JONES, OWNER
 JV5117'OF THE FARM STATED THAT A CEMENT POST (NO LETTERING) APPROXIMATELY
 JV5117'10 INCHES SQUARE WAS FOUND ON THE SAND POINT A FEW YEARS AGO
 JV5117'DURING THE PROCESS OF REMOVING SAND FOR THE FARM LANE.  THE
 JV5117'POST WAS USED TO FILL IN A DEEP RUT IN THE LANE.
 JV5117'
 JV5117'DESCRIPTION ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1484 ***********************************************************************
 JV1484  DESIGNATION -  BUNKER
 JV1484  PID         -  JV1484
 JV1484  STATE/COUNTY-  MD/BALTIMORE
 JV1484  COUNTRY     -  US
 JV1484  USGS QUAD   -  HEREFORD (2016)
 JV1484
 JV1484                         *CURRENT SURVEY CONTROL
 JV1484  ______________________________________________________________________
 JV1484* NAD 83(1991) POSITION- 39 36 04.59179(N) 076 39 39.19587(W)   ADJUSTED
 JV1484* NAVD 88 ORTHO HEIGHT -   191.762 (meters)      629.14  (feet) ADJUSTED
 JV1484  ______________________________________________________________________
 JV1484  GEOID HEIGHT    -        -32.284 (meters)                     GEOID18
 JV1484  LAPLACE CORR    -         -2.65  (seconds)                    DEFLEC18
 JV1484  DYNAMIC HEIGHT  -        191.665 (meters)      628.82  (feet) COMP
 JV1484  MODELED GRAVITY -    980,118.5   (mgal)                       NAVD 88
 JV1484
 JV1484  HORZ ORDER      -  SECOND
 JV1484  VERT ORDER      -  SECOND    CLASS 0
 JV1484
 JV1484.The horizontal coordinates were established by classical geodetic methods
 JV1484.and adjusted by the National Geodetic Survey in January 1992.
 JV1484
 JV1484.The orthometric height was determined by differential leveling and
 JV1484.adjusted by the NATIONAL GEODETIC SURVEY
 JV1484.in June 1991.
 JV1484
 JV1484.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1484.GEOID18 height accuracy estimate available here.
 JV1484
 JV1484.Click photographs - Photos may exist for this station.
 JV1484
 JV1484.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1484
 JV1484.The dynamic height is computed by dividing the NAVD 88
 JV1484.geopotential number by the normal gravity value computed on the
 JV1484.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1484.degrees latitude (g = 980.6199 gals.).
 JV1484
 JV1484.The modeled gravity was interpolated from observed gravity values.
 JV1484
 JV1484. The following values were computed from the NAD 83(1991) position.
 JV1484
 JV1484;                    North         East     Units Scale Factor Converg.
 JV1484;SPC MD       -   214,813.441   429,126.634   MT  1.00002997   +0 12 46.2
 JV1484;SPC MD       -   704,767.10  1,407,892.97   sFT  1.00002997   +0 12 46.2
 JV1484;UTM  18      - 4,384,821.897   357,402.190   MT  0.99985035   -1 03 32.0
 JV1484
 JV1484!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1484!SPC MD       -   0.99997498  x   1.00002997  =   1.00000495
 JV1484!UTM  18      -   0.99997498  x   0.99985035  =   0.99982533
 JV1484
 JV1484:                Primary Azimuth Mark                     Grid Az
 JV1484:SPC MD       -  BUNKER AZ MK                             207 42 24.4
 JV1484:UTM  18      -  BUNKER AZ MK                             208 58 42.6
 JV1484
 JV1484_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5740284821(NAD 83)
 JV1484
 JV1484|---------------------------------------------------------------------|
 JV1484| PID    Reference Object                     Distance      Geod. Az  |
 JV1484|                                                           dddmmss.s |
 JV1484| JV1483 BUNKER RM 1                          12.128 METERS 01825     |
 JV1484| JV6111 HEREFORD HIGH SCHOOL TANK           320.050 METERS 14358     |
 JV1484| CB1031 BUNKER AZ MK                                       2075510.6 |
 JV1484| JV1485 BUNKER RM 2                          13.620 METERS 21631     |
 JV1484|---------------------------------------------------------------------|
 JV1484
 JV1484                          SUPERSEDED SURVEY CONTROL
 JV1484
 JV1484  NAD 83(1986)-  39 36 04.58716(N)    076 39 39.19971(W) AD(       ) 2
 JV1484  NAD 83(1986)-  39 36 04.54911(N)    076 39 39.20391(W) AD(       ) 2
 JV1484  NAD 27      -  39 36 04.20650(N)    076 39 40.30350(W) AD(       ) 2
 JV1484  NGVD 29             191.97   (m)          629.8    (f) LEVELING    3  
 JV1484  NGVD 29 (11/26/84)  191.972  (m)          629.83   (f) ADJUSTED    2 0
 JV1484
 JV1484.Superseded values are not recommended for survey control.
 JV1484
 JV1484.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1484.See file dsdata.pdf to determine how the superseded data were derived.
 JV1484
 JV1484_MARKER: DS = TRIANGULATION STATION DISK
 JV1484_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1484_STAMPING: BUNKER 1959
 JV1484_MARK LOGO: CGS
 JV1484_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1484+STABILITY: SURFACE MOTION
 JV1484
 JV1484  HISTORY     - Date     Condition        Report By
 JV1484  HISTORY     - 1959     MONUMENTED       CGS
 JV1484  HISTORY     - 1959     GOOD             CGS
 JV1484  HISTORY     - 1961     GOOD             LOCENG
 JV1484
 JV1484                          STATION DESCRIPTION
 JV1484
 JV1484'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV1484'STATION IS LOCATED ON THE RIGHT-OF-WAY ALONG THE SOUTHEAST
 JV1484'SIDE OF U.S. HIGHWAY NO. 111 ABOUT 1 MILE NORTH OF THE VILLAGE
 JV1484'OF HEREFORD.  STATION MARK, A STANDARD DISK STAMPED BUNKER 1959
 JV1484'AND SET IN A 12X12 INCH CONCRETE MONUMENT, FLUSH WITH THE
 JV1484'GROUND IS 71 FEET NORTHWEST OF A LONE TREE, 89 FEET SOUTHWEST
 JV1484'OF THE NORTHWEST CORNER OF BRICK HOUSE, 46 FEET SOUTHEAST OF
 JV1484'APPROXIMATE CENTERLINE OF U.S. HIGHWAY NO. 111 AND 2.5 FEET
 JV1484'WEST OF WITNESS MARKER.
 JV1484'
 JV1484'TO REACH FROM THE OVERPASS AT THE JUNCTION OF U.S. HIGHWAY NO. 111
 JV1484'AND STATE HIGHWAY NO. 137 WHICH IS 0.35 MILE WEST OF
 JV1484'HEREFORD, GO NORTHERLY ON U.S. HIGHWAY NO. 111 FOR 0.7 MILE
 JV1484'TO AZIMUTH MARK ON RIGHT (SOUTHEAST) SIDE OF HIGHWAY.  CONTINUE
 JV1484'NORTHERLY ON U.S., HIGHWAY NO. 111 FOR 0.2 MILE TO RED BRICK
 JV1484'HOUSE ON RIGHT AND STATION ON RIGHT (SOUTHEAST) SIDE OF
 JV1484'HIGHWAY AS DESCRIBED.
 JV1484'
 JV1484'REFERENCE MARK NO. 1, A STANDARD DISK SET IN A 12X12 INCH
 JV1484'CONCRETE MONUMENT AND STAMPED BUNKER NO 1 1959 IS 40 FEET
 JV1484'SOUTHEAST OF APPROXIMATE CENTERLINE OF HIGHWAY AND 66 FEET
 JV1484'WEST OF THE NORTHWEST CORNER OF A BRICK HOUSE.  THE MONUMENT
 JV1484'IS FLUSH WITH THE SURFACE OF GROUND.
 JV1484'
 JV1484'REFERENCE MARK NO. 2, A STANDARD DISK SET IN A 12X12 INCH
 JV1484'CONCRETE MONUMENT AND STAMPED BUNKER NO 2 1959 IS 40 FEET
 JV1484'SOUTHEAST OF THE CENTERLINE OF U.S. HIGHWAY NO. 111.  THE
 JV1484'MONUMENT IS FLUSH WITH THE SURFACE OF GROUND.
 JV1484'
 JV1484'AZIMUTH MARK, A STANDARD DISK SET IN A 12X12 INCH CONCRETE
 JV1484'MONUMENT AND STAMPED BUNKER 1959 IS 13 FEET NORTHWEST OF
 JV1484'FENCELINE, 51 FEET SOUTHEAST OF CENTERLINE OF U.S. HIGHWAY NO. 111
 JV1484'AND 2.5 FEET NORTHWEST OF WITNESS MARKER.  THE MONUMENT IS FLUSH
 JV1484'WITH THE SURFACE OF GROUND.
 JV1484'
 JV1484'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV1484
 JV1484                          STATION RECOVERY (1959)
 JV1484
 JV1484'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV1484'1.4 MI NW FROM HEREFORD.
 JV1484'0.45 MILE WEST ALONG STATE HIGHWAY 137 FROM ITS JUNCTION WITH
 JV1484'STATE HIGHWAY 45 AT HEREFORD, THENCE 0.95 MILE NORTH ALONG NEW
 JV1484'U.S. HIGHWAY 111, ON THE TOP OF A SMALL CUT, ABOUT 0.1 MILE
 JV1484'NORTHWEST OF THE HEREFORD HIGH SCHOOL, ABOUT 0.1 MILE SOUTH OF
 JV1484'A LARGE CONCRETE OVERPASS, 71 FEET NORTHWEST OF A LONE TREE,
 JV1484'46 FEET SOUTHEAST OF THE CENTER LINE OF THE NORTH BOUND LANE
 JV1484'OF THE HIGHWAY, 89 FEET SOUTHWEST OF THE NORTHWEST CORNER OF
 JV1484'A BRICK HOME, 2 1/2 FEET WEST OF A METAL WITNESS POST, 6 FEET
 JV1484'ABOVE THE LEVEL OF THE HIGHWAY AND SET IN THE TOP OF A CONCRETE
 JV1484'POST FLUSH WITH THE GROUND.
 JV1484
 JV1484                          STATION RECOVERY (1961)
 JV1484
 JV1484'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1961
 JV1484'RECOVERED BY EC BALLING MAPS, INC.
 JV1484'
 JV1484'STATION AND AZIMUTH MARK FOUND IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1483 ***********************************************************************
 JV1483  DESIGNATION -  BUNKER RM 1
 JV1483  PID         -  JV1483
 JV1483  STATE/COUNTY-  MD/BALTIMORE
 JV1483  COUNTRY     -  US
 JV1483  USGS QUAD   -  HEREFORD (2016)
 JV1483
 JV1483                         *CURRENT SURVEY CONTROL
 JV1483  ______________________________________________________________________
 JV1483* NAD 83(1986) POSITION- 39 36 04.96   (N) 076 39 39.04   (W)   HD_HELD1
 JV1483* NAVD 88 ORTHO HEIGHT -   191.369 (meters)      627.85  (feet) ADJUSTED
 JV1483  ______________________________________________________________________
 JV1483  GEOID HEIGHT    -        -32.284 (meters)                     GEOID18
 JV1483  DYNAMIC HEIGHT  -        191.272 (meters)      627.53  (feet) COMP
 JV1483  MODELED GRAVITY -    980,118.6   (mgal)                       NAVD 88
 JV1483
 JV1483  VERT ORDER      -  SECOND    CLASS 0
 JV1483
 JV1483.The horizontal coordinates were determined by differentially corrected
 JV1483.hand held GPS observations or other comparable positioning techniques
 JV1483.and have an estimated accuracy of +/- 3 meters.
 JV1483
 JV1483.The orthometric height was determined by differential leveling and
 JV1483.adjusted by the NATIONAL GEODETIC SURVEY
 JV1483.in June 1991.
 JV1483
 JV1483.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1483.GEOID18 height accuracy estimate available here.
 JV1483
 JV1483.Click photographs - Photos may exist for this station.
 JV1483
 JV1483.The dynamic height is computed by dividing the NAVD 88
 JV1483.geopotential number by the normal gravity value computed on the
 JV1483.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1483.degrees latitude (g = 980.6199 gals.).
 JV1483
 JV1483.The modeled gravity was interpolated from observed gravity values.
 JV1483
 JV1483;                    North         East    Units  Estimated Accuracy
 JV1483;SPC MD       -   214,824.8     429,130.3     MT  (+/- 3 meters HH1 GPS) 
 JV1483
 JV1483_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5740684833(NAD 83)
 JV1483
 JV1483                          SUPERSEDED SURVEY CONTROL
 JV1483
 JV1483  NGVD 29 (11/26/84)  191.579  (m)          628.54   (f) ADJUSTED    2 0
 JV1483
 JV1483.Superseded values are not recommended for survey control.
 JV1483
 JV1483.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1483.See file dsdata.pdf to determine how the superseded data were derived.
 JV1483
 JV1483_MARKER: DR = REFERENCE MARK DISK
 JV1483_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1483_STAMPING: BUNKER NO 1 1959
 JV1483_MARK LOGO: CGS
 JV1483_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1483+STABILITY: SURFACE MOTION
 JV1483
 JV1483  HISTORY     - Date     Condition        Report By
 JV1483  HISTORY     - 1959     MONUMENTED       CGS
 JV1483
 JV1483                          STATION DESCRIPTION
 JV1483
 JV1483'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1483'1.4 MI NW FROM HEREFORD.
 JV1483'0.45 MILE WEST ALONG STATE HIGHWAY 137 FROM ITS JUNCTION WITH
 JV1483'STATE HIGHWAY 45 AT HEREFORD, THENCE 0.95 MILE NORTH ALONG NEW
 JV1483'U.S. HIGHWAY 111, ON THE TOP OF A SMALL CUT, 39.8 FEET NORTHEAST
 JV1483'OF THE STATION, 40 FEET SOUTHEAST OF THE CENTER LINE OF THE
 JV1483'NORTH BOUND LANE, 66 FEET WEST OF THE NORTHWEST CORNER OF A BRICK
 JV1483'HOUSE, 5 FEET ABOVE THE LEVEL OF THE HIGHWAY AND SET IN THE
 JV1483'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1485 ***********************************************************************
 JV1485  DESIGNATION -  BUNKER RM 2
 JV1485  PID         -  JV1485
 JV1485  STATE/COUNTY-  MD/BALTIMORE
 JV1485  COUNTRY     -  US
 JV1485  USGS QUAD   -  HEREFORD (2016)
 JV1485
 JV1485                         *CURRENT SURVEY CONTROL
 JV1485  ______________________________________________________________________
 JV1485* NAD 83(1986) POSITION- 39 36 04.24   (N) 076 39 39.54   (W)   HD_HELD1
 JV1485* NAVD 88 ORTHO HEIGHT -   192.149 (meters)      630.41  (feet) ADJUSTED
 JV1485  ______________________________________________________________________
 JV1485  GEOID HEIGHT    -        -32.284 (meters)                     GEOID18
 JV1485  DYNAMIC HEIGHT  -        192.052 (meters)      630.09  (feet) COMP
 JV1485  MODELED GRAVITY -    980,118.6   (mgal)                       NAVD 88
 JV1485
 JV1485  VERT ORDER      -  SECOND    CLASS 0
 JV1485
 JV1485.The horizontal coordinates were determined by differentially corrected
 JV1485.hand held GPS observations or other comparable positioning techniques
 JV1485.and have an estimated accuracy of +/- 3 meters.
 JV1485
 JV1485.The orthometric height was determined by differential leveling and
 JV1485.adjusted by the NATIONAL GEODETIC SURVEY
 JV1485.in June 1991.
 JV1485
 JV1485.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1485.GEOID18 height accuracy estimate available here.
 JV1485
 JV1485.Click photographs - Photos may exist for this station.
 JV1485
 JV1485.The dynamic height is computed by dividing the NAVD 88
 JV1485.geopotential number by the normal gravity value computed on the
 JV1485.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1485.degrees latitude (g = 980.6199 gals.).
 JV1485
 JV1485.The modeled gravity was interpolated from observed gravity values.
 JV1485
 JV1485;                    North         East    Units  Estimated Accuracy
 JV1485;SPC MD       -   214,802.6     429,118.5     MT  (+/- 3 meters HH1 GPS) 
 JV1485
 JV1485_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5739384811(NAD 83)
 JV1485
 JV1485                          SUPERSEDED SURVEY CONTROL
 JV1485
 JV1485  NGVD 29 (11/26/84)  192.359  (m)          631.10   (f) ADJUSTED    2 0
 JV1485
 JV1485.Superseded values are not recommended for survey control.
 JV1485
 JV1485.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1485.See file dsdata.pdf to determine how the superseded data were derived.
 JV1485
 JV1485_MARKER: DR = REFERENCE MARK DISK
 JV1485_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1485_STAMPING: BUNKER NO 2 1959
 JV1485_MARK LOGO: CGS
 JV1485_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1485+STABILITY: SURFACE MOTION
 JV1485
 JV1485  HISTORY     - Date     Condition        Report By
 JV1485  HISTORY     - 1959     MONUMENTED       CGS
 JV1485
 JV1485                          STATION DESCRIPTION
 JV1485
 JV1485'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1485'1.4 MI NW FROM HEREFORD.
 JV1485'0.45 MILE WEST ALONG STATE HIGHWAY 137 FROM THE JUNCTION OF STATE
 JV1485'HIGHWAY 45 AT HEREFORD, THENCE 0.95 MILE NORTH ALONG NEW U.S.
 JV1485'HIGHWAY 111, ON THE TOP OF A SMALL CUT, 44.7 FEET SOUTHWEST OF
 JV1485'THE STATION, 35 FEET SOUTHEAST OF THE CENTER LINE OF THE
 JV1485'NORTHBOUND LANE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV1485'THE GROUND AND ABOUT 6 FEET ABOVE THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6695 ***********************************************************************
 HV6695  DESIGNATION -  BUR
 HV6695  PID         -  HV6695
 HV6695  STATE/COUNTY-  MD/CALVERT
 HV6695  COUNTRY     -  US
 HV6695  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6695
 HV6695                         *CURRENT SURVEY CONTROL
 HV6695  ______________________________________________________________________
 HV6695* NAD 83(1991) POSITION- 38 19 51.23236(N) 076 28 57.23180(W)   ADJUSTED
 HV6695* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6695  ______________________________________________________________________
 HV6695  GEOID HEIGHT    -        -34.310 (meters)                     GEOID18
 HV6695  LAPLACE CORR    -         -5.01  (seconds)                    DEFLEC18
 HV6695  HORZ ORDER      -  SECOND
 HV6695
 HV6695.The horizontal coordinates were established by classical geodetic methods
 HV6695.and adjusted by the National Geodetic Survey in January 1992.
 HV6695
 HV6695.The orthometric height was scaled from a topographic map.
 HV6695
 HV6695.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6695.GEOID18 height accuracy estimate available here.
 HV6695
 HV6695.Click photographs - Photos may exist for this station.
 HV6695
 HV6695.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6695
 HV6695. The following values were computed from the NAD 83(1991) position.
 HV6695
 HV6695;                    North         East     Units Scale Factor Converg.
 HV6695;SPC MD       -    73,860.806   445,242.194   MT  0.99999477   +0 19 29.1
 HV6695;SPC MD       -   242,324.99  1,460,765.43   sFT  0.99999477   +0 19 29.1
 HV6695;UTM  18      - 4,243,569.764   370,418.485   MT  0.99980679   -0 55 10.6
 HV6695
 HV6695!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6695!SPC MD       -   1.00000527  x   0.99999477  =   1.00000004
 HV6695!UTM  18      -   1.00000527  x   0.99980679  =   0.99981206
 HV6695
 HV6695:                Primary Azimuth Mark                     Grid Az
 HV6695:SPC MD       -  TON                                      037 36 50.9
 HV6695:UTM  18      -  TON                                      038 51 30.6
 HV6695
 HV6695_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7041843569(NAD 83)
 HV6695
 HV6695|---------------------------------------------------------------------|
 HV6695| PID    Reference Object                     Distance      Geod. Az  |
 HV6695|                                                           dddmmss.s |
 HV6695| HV6701 TON                                 APPROX. 1.6 KM 0375620.0 |
 HV6695| CX2148 BUR RM                               12.150 METERS 08521     |
 HV6695| HV6698 AVONDALE CATHOLIC CHURCH MSFC       APPROX. 1.9 KM 1040130.9 |
 HV6695| HV6711 SOLOMONS ISLAND ME CHURCH           APPROX. 2.1 KM 1132829.5 |
 HV6695| HV6697 BARN EAST GABLE                     APPROX. 1.2 KM 2461004.2 |
 HV6695|---------------------------------------------------------------------|
 HV6695
 HV6695                          SUPERSEDED SURVEY CONTROL
 HV6695
 HV6695  NAD 83(1986)-  38 19 51.23222(N)    076 28 57.24606(W) AD(       ) 2
 HV6695  NAD 27      -  38 19 50.78000(N)    076 28 58.39800(W) AD(       ) 2
 HV6695  USSD        -  38 19 51.15300(N)    076 28 58.15500(W) AD(       ) 3
 HV6695
 HV6695.Superseded values are not recommended for survey control.
 HV6695
 HV6695.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6695.See file dsdata.pdf to determine how the superseded data were derived.
 HV6695
 HV6695_MARKER: K = CLAY TILE PIPE
 HV6695_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6695_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6695
 HV6695  HISTORY     - Date     Condition        Report By
 HV6695  HISTORY     - 1907     MONUMENTED       MDSFC
 HV6695  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6695
 HV6695                          STATION DESCRIPTION
 HV6695
 HV6695'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (OWF)
 HV6695'STATION IS ON THE EASTERN SHORE OF PATUXENT RIVER, ON THE NW SIDE
 HV6695'OF POINT PATIENCE, ABOUT MIDWAY BETWEEN POINT AND LARGE DWELLING
 HV6695'HOUSE ON THE HIGH GROUND.  STATION IS ON SAND AND GRASS LAND,
 HV6695'ABOUT 1 FOOT ABOVE HIGH WATER, 12 YARDS SE OF HIGH-WATER MARK ON
 HV6695'ONE SIDE OF POINT AND 36 YARDS NW OF HIGH-WATER MARK ON OTHER
 HV6695'SIDE OF POINT, AND ABOUT 300 YARDS NE OF EXTREME END OF
 HV6695'POINT.  STATION MARKED UNDERGROUND BY NOZZLE OF PINT BOTTLE
 HV6695'SET 24 INCHES BELOW SURFACE.  ABOVE THIS IS A 4-INCH TILE
 HV6695'PIPE, 20 INCHES LONG, SET IN AND FILLED WITH CEMENT, ITS TOP
 HV6695'PROJECTING 1 INCH ABOVE SURFACE OF GROUND.  REFERENCE
 HV6695'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6695'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6695'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV6695'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6695'COUNTER-SUNK IN TOP OF POST.  IT IS 12.15 METERS (39.9 FEET)
 HV6695'FROM STATION IN AZIMUTH 265 DEG 20 MIN.  DISTANCES AND
 HV6695'AZIMUTHS FROM THE STATION TO OTHER POINTS OF REFERENCE ARE
 HV6695'AS FOLLOWS--NAIL IN BLAZE IN 8-INCH PINE TREE, 25.94 METERS
 HV6695'(85.1 FEET), 20 DEG 36 MIN.  SQUARE CHIMNEY ON DENT HOUSE,
 HV6695'3/4 MILE, 86 DEG 26 MIN.  CHIMNEY ON HOUSE, 1-5/8 MILES, 126
 HV6695'DEG 48 MIN.  LEFT CHIMNEY OF HOUSE, 1-1/2 MILES, 204 DEG
 HV6695'35 MIN.  RIGHT CHIMNEY OF HOUSE, 1-1/2 MILES, 216 DEG 27
 HV6695'MIN.  LEFT CHIMNEY OF MARBURGER HOUSE, 1/4 MILE, 234 DEG
 HV6695'04 MIN.  MIDDLE GABLE OF JUDGE CRANES HOUSE, 1/2 MILE, 357 DEG
 HV6695'05 MIN.
 HV6695
 HV6695                          STATION RECOVERY (1942)
 HV6695
 HV6695'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6695'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED
 HV6695'FOR BY TWO MEN FOR TWO HOURS, BUT NO TRACE OF THEM COULD BE
 HV6695'FOUND.  IT IS RECOMMENDED THAT THIS STATION AND ITS REFERENCE
 HV6695'MARK BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7196 ***********************************************************************
 JV7196  DESIGNATION -  BURK
 JV7196  PID         -  JV7196
 JV7196  STATE/COUNTY-  MD/FREDERICK
 JV7196  COUNTRY     -  US
 JV7196  USGS QUAD   -  MIDDLETOWN (2016)
 JV7196
 JV7196                         *CURRENT SURVEY CONTROL
 JV7196  ______________________________________________________________________
 JV7196* NAD 83(2011) POSITION- 39 25 23.10069(N) 077 33 44.40400(W)   ADJUSTED
 JV7196* NAD 83(2011) ELLIP HT-    99.202 (meters)        (06/27/12)   ADJUSTED
 JV7196* NAD 83(2011) EPOCH   -  2010.00
 JV7196* NAVD 88 ORTHO HEIGHT -   132.3   (meters)      434.    (feet) GPS OBS
 JV7196  ______________________________________________________________________
 JV7196  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7196  GEOID HEIGHT    -        -33.410 (meters)                     GEOID93
 JV7196  GEOID HEIGHT    -        -33.091 (meters)                     GEOID18
 JV7196  NAD 83(2011) X  -  1,062,609.293 (meters)                     COMP
 JV7196  NAD 83(2011) Y  - -4,817,920.234 (meters)                     COMP
 JV7196  NAD 83(2011) Z  -  4,028,773.509 (meters)                     COMP
 JV7196  LAPLACE CORR    -          7.00  (seconds)                    DEFLEC18
 JV7196
 JV7196  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7196  Standards:
 JV7196         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7196            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7196  -------------------------------------------------------------------
 JV7196  NETWORK    1.37   1.76           0.60   0.51   0.90      0.02523054
 JV7196  -------------------------------------------------------------------
 JV7196  Click here for local accuracies and other accuracy information.
 JV7196
 JV7196.The horizontal coordinates were established by GPS observations
 JV7196.and adjusted by the National Geodetic Survey in June 2012.
 JV7196
 JV7196.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7196.been affixed to the stable North American tectonic plate. See 
 JV7196.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7196
 JV7196.The horizontal coordinates are valid at the epoch date displayed above
 JV7196.which is a decimal equivalence of Year/Month/Day.
 JV7196
 JV7196.The orthometric height was determined by GPS observations and a
 JV7196.high-resolution geoid model.
 JV7196
 JV7196.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7196.GEOID18 height accuracy estimate available here.
 JV7196
 JV7196.Click photographs - Photos may exist for this station.
 JV7196
 JV7196.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7196
 JV7196.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7196
 JV7196.The ellipsoidal height was determined by GPS observations
 JV7196.and is referenced to NAD 83.
 JV7196
 JV7196. The following values were computed from the NAD 83(2011) position.
 JV7196
 JV7196;                    North         East     Units Scale Factor Converg.
 JV7196;SPC MD       -   195,124.431   351,578.953   MT  0.99999540   -0 21 10.6
 JV7196;SPC MD       -   640,170.74  1,153,471.95   sFT  0.99999540   -0 21 10.6
 JV7196;UTM  18      - 4,366,861.468   279,436.008   MT  1.00019901   -1 37 40.2
 JV7196
 JV7196!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7196!SPC MD       -   0.99998444  x   0.99999540  =   0.99997984
 JV7196!UTM  18      -   0.99998444  x   1.00019901  =   1.00018344
 JV7196
 JV7196_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7943666861(NAD 83)
 JV7196
 JV7196                          SUPERSEDED SURVEY CONTROL
 JV7196
 JV7196  NAD 83(2007)-  39 25 23.10087(N)    077 33 44.40467(W) AD(2002.00) 0
 JV7196  ELLIP H (02/10/07)   99.225  (m)                       GP(2002.00)    
 JV7196  ELLIP H (08/30/02)   99.229  (m)                       GP(       ) 4 2
 JV7196  NAD 83(1991)-  39 25 23.10114(N)    077 33 44.40452(W) AD(       ) 1
 JV7196  ELLIP H (02/09/94)   99.156  (m)                       GP(       ) 4 1
 JV7196
 JV7196.Superseded values are not recommended for survey control.
 JV7196
 JV7196.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7196.See file dsdata.pdf to determine how the superseded data were derived.
 JV7196
 JV7196_MARKER: DD = SURVEY DISK
 JV7196_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7196_STAMPING: BURK 1993
 JV7196_MARK LOGO: MD-021
 JV7196_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7196_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7196+STABILITY: SURFACE MOTION
 JV7196_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7196+SATELLITE: SATELLITE OBSERVATIONS - February 05, 2001
 JV7196
 JV7196  HISTORY     - Date     Condition        Report By
 JV7196  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7196  HISTORY     - 20010205 GOOD             GEOMET
 JV7196
 JV7196                          STATION DESCRIPTION
 JV7196
 JV7196'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7196'FROM THE INTERSECTION OF MAIN STREET (US RTE ALT 40) AND MD RTE 17
 JV7196'(BURKITTSVILLE ROAD) IN MIDDLETOWN, MD, PROCEED SOUTH ON RTE 17 3.1
 JV7196'MILES (5.0 KM) TO BRIDGE OVER CATOCTIN CREEK. CONTINUE 0.5 MILES
 JV7196'(0.8 KM) ALONG RTE 17 TO THE STATION ON THE SOUTH SIDE OF THE ROAD.
 JV7196'NO REFERENCES AVAILABLE. STATION IS A BRASS DISK SET IN THE TOP OF AN
 JV7196'8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7196
 JV7196                          STATION RECOVERY (2001)
 JV7196
 JV7196'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2001 (TL)
 JV7196'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3568 ***********************************************************************
 JU3568  DESIGNATION -  BURLEY 1898
 JU3568  PID         -  JU3568
 JU3568  STATE/COUNTY-  MD/CECIL
 JU3568  COUNTRY     -  US
 JU3568  USGS QUAD   -  EARLEVILLE (2016)
 JU3568
 JU3568                         *CURRENT SURVEY CONTROL
 JU3568  ______________________________________________________________________
 JU3568* NAD 83(1991) POSITION- 39 22 57.55540(N) 075 59 28.78506(W)   ADJUSTED
 JU3568* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 JU3568  ______________________________________________________________________
 JU3568  GEOID HEIGHT    -        -33.398 (meters)                     GEOID18
 JU3568  LAPLACE CORR    -         -1.49  (seconds)                    DEFLEC18
 JU3568  HORZ ORDER      -  THIRD
 JU3568
 JU3568.The horizontal coordinates were established by classical geodetic methods
 JU3568.and adjusted by the National Geodetic Survey in January 1992.
 JU3568
 JU3568.The orthometric height was scaled from a topographic map.
 JU3568
 JU3568.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3568.GEOID18 height accuracy estimate available here.
 JU3568
 JU3568.Click photographs - Photos may exist for this station.
 JU3568
 JU3568.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3568
 JU3568. The following values were computed from the NAD 83(1991) position.
 JU3568
 JU3568;                    North         East     Units Scale Factor Converg.
 JU3568;SPC MD       -   190,966.854   486,902.201   MT  0.99998891   +0 37 59.1
 JU3568;SPC MD       -   626,530.42  1,597,444.97   sFT  0.99998891   +0 37 59.1
 JU3568;UTM  18      - 4,359,710.202   414,622.510   MT  0.99968975   -0 37 44.5
 JU3568
 JU3568!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3568!SPC MD       -   1.00000340  x   0.99998891  =   0.99999231
 JU3568!UTM  18      -   1.00000340  x   0.99968975  =   0.99969314
 JU3568
 JU3568:                Primary Azimuth Mark                     Grid Az
 JU3568:SPC MD       -  PRICE                                    254 16 02.1
 JU3568:UTM  18      -  PRICE                                    255 31 45.7
 JU3568
 JU3568_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1462259710(NAD 83)
 JU3568
 JU3568|---------------------------------------------------------------------|
 JU3568| PID    Reference Object                     Distance      Geod. Az  |
 JU3568|                                                           dddmmss.s |
 JU3568| JU3555 BOATHOUSE FLAGSTAFF                 APPROX. 1.3 KM 1774159.5 |
 JU3568| JV4884 BLUFF                               APPROX. 1.8 KM 2061423.6 |
 JU3568| JV4894 POINT                               APPROX. 3.6 KM 2315909.9 |
 JU3568| JV4891 MID                                 APPROX. 4.3 KM 2475348.9 |
 JU3568| JV4895 PRICE                               APPROX. 5.2 KM 2545401.2 |
 JU3568|---------------------------------------------------------------------|
 JU3568
 JU3568                          SUPERSEDED SURVEY CONTROL
 JU3568
 JU3568  NAD 83(1986)-  39 22 57.54763(N)    075 59 28.79197(W) AD(       ) 3
 JU3568  NAD 27      -  39 22 57.15800(N)    075 59 30.00400(W) AD(       ) 3
 JU3568  USSD        -  39 22 57.52900(N)    075 59 29.83800(W) AD(       ) 3
 JU3568
 JU3568.Superseded values are not recommended for survey control.
 JU3568
 JU3568.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3568.See file dsdata.pdf to determine how the superseded data were derived.
 JU3568
 JU3568_MARKER: Z = SEE DESCRIPTION
 JU3568_SETTING: 0 = UNSPECIFIED SETTING
 JU3568_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3568
 JU3568  HISTORY     - Date     Condition        Report By
 JU3568  HISTORY     - 1898     MONUMENTED       CGS
 JU3568
 JU3568                          STATION DESCRIPTION
 JU3568
 JU3568'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JU3568'ON THE N SHORE OF SASSAFRAS RIVER, IN AN OPEN FIELD, 28 FEET FROM
 JU3568'EDGE OF BLUFF, AND 132 FEET FROM EDGE OF TIMBER.  MARKED BY TWO
 JU3568'6-INCH TILE PIPES SET ONE ABOVE THE OTHER, THE TOP OF THE UPPER
 JU3568'PIPE BEING 6 INCHES BELOW SURFACE OF GROUND.  THE SURFACE MARK
 JU3568'IS A 4-INCH PINE STAKE, ITS TOP EVEN WITH SURFACE OF GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4859 ***********************************************************************
 HV4859  DESIGNATION -  BURNING
 HV4859  PID         -  HV4859
 HV4859  STATE/COUNTY-  MD/MONTGOMERY
 HV4859  COUNTRY     -  US
 HV4859  USGS QUAD   -  FALLS CHURCH (2019)
 HV4859
 HV4859                         *CURRENT SURVEY CONTROL
 HV4859  ______________________________________________________________________
 HV4859* NAD 83(1993) POSITION- 38 59 52.09689(N) 077 09 03.10015(W)   ADJUSTED
 HV4859* NAVD 88 ORTHO HEIGHT -    79.    (meters)      259.    (feet) SCALED
 HV4859  ______________________________________________________________________
 HV4859  GEOID HEIGHT    -        -31.794 (meters)                     GEOID18
 HV4859  LAPLACE CORR    -         -1.87  (seconds)                    DEFLEC18
 HV4859  HORZ ORDER      -  SECOND
 HV4859
 HV4859.The horizontal coordinates were established by classical geodetic methods
 HV4859.and adjusted by the National Geodetic Survey in November 1994.
 HV4859
 HV4859.The orthometric height was scaled from a topographic map.
 HV4859
 HV4859.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4859.GEOID18 height accuracy estimate available here.
 HV4859
 HV4859.Click photographs - Photos may exist for this station.
 HV4859
 HV4859.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4859
 HV4859. The following values were computed from the NAD 83(1993) position.
 HV4859
 HV4859;                    North         East     Units Scale Factor Converg.
 HV4859;SPC MD       -   147,773.305   386,931.669   MT  0.99995211   -0 05 40.9
 HV4859;SPC MD       -   484,819.58  1,269,458.32   sFT  0.99995211   -0 05 40.9
 HV4859;UTM  18      - 4,318,733.604   313,738.208   MT  1.00002721   -1 21 14.1
 HV4859
 HV4859!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4859!SPC MD       -   0.99999263  x   0.99995211  =   0.99994474
 HV4859!UTM  18      -   0.99999263  x   1.00002721  =   1.00001984
 HV4859
 HV4859:                Primary Azimuth Mark                     Grid Az
 HV4859:SPC MD       -  BURNING AZ MK                            185 15 03.3
 HV4859:UTM  18      -  BURNING AZ MK                            186 30 36.5
 HV4859
 HV4859_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1373818733(NAD 83)
 HV4859
 HV4859|---------------------------------------------------------------------|
 HV4859| PID    Reference Object                     Distance      Geod. Az  |
 HV4859|                                                           dddmmss.s |
 HV4859| DC6752 BURNING AZ MK                                      1850922.4 |
 HV4859| DC6754 BURNING RM 2                         27.776 METERS 19546     |
 HV4859| HV4860 CABIN JOHN WSSC TANK                APPROX. 2.3 KM 1993522.2 |
 HV4859| DC6753 BURNING RM 1                         52.222 METERS 30612     |
 HV4859|---------------------------------------------------------------------|
 HV4859
 HV4859                          SUPERSEDED SURVEY CONTROL
 HV4859
 HV4859  NAD 83(1991)-  38 59 52.09635(N)    077 09 03.10128(W) AD(       ) 2
 HV4859  NAD 83(1986)-  38 59 52.09623(N)    077 09 03.11092(W) AD(       ) 2
 HV4859  NAD 27      -  38 59 51.70077(N)    077 09 04.17869(W) AD(       ) 2
 HV4859
 HV4859.Superseded values are not recommended for survey control.
 HV4859
 HV4859.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4859.See file dsdata.pdf to determine how the superseded data were derived.
 HV4859
 HV4859_MARKER: DS = TRIANGULATION STATION DISK
 HV4859_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4859_STAMPING: BURNING 1958
 HV4859_MARK LOGO: CGS
 HV4859_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4859+STABILITY: SURFACE MOTION
 HV4859
 HV4859  HISTORY     - Date     Condition        Report By
 HV4859  HISTORY     - 1958     MONUMENTED       CGS
 HV4859  HISTORY     - 19950621 MARK NOT FOUND   USPSQD
 HV4859
 HV4859                          STATION DESCRIPTION
 HV4859
 HV4859'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV4859'THE STATION IS NEAR THE CLUB HOUSE OF THE BURNING TREE COUNTRY CLUB,
 HV4859'ABOUT 9.5 MILES NORTHWEST OF THE CENTER OF WASHINGTON, D.C. AND
 HV4859'0.2 MILE WEST OF BURDETTE ROAD.  IT IS APPROXIMATELY 120 FEET
 HV4859'NORTHEAST OF THE NORTHEAST CORNER OF CLUB HOUSE, 43 FEET EAST OF
 HV4859'THE EAST EDGE OF PARKING LOT AND 36 FEET NORTH OF THE APPROXIMATE
 HV4859'CENTER OF DRIVEWAY.  THE MARK IS SET FLUSH AND THE DISK IS
 HV4859'STAMPED BURNING 1958.
 HV4859'
 HV4859'R.M. NO. 1 IS 3-1/2 FEET SOUTH OF LIGHT POLE AND 1 FOOT EAST OF HEDGE
 HV4859'ROW.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED BURNING NO 1
 HV4859'1958.
 HV4859'
 HV4859'R.M. NO. 2 IS 30 FEET SOUTHWEST OF DRIVEWAY, 29 FEET NORTH OF
 HV4859'DRIVEWAY AND 1 FOOT SOUTHWEST OF CURB.  THE MARK IS SET FLUSH AND
 HV4859'THE DISK IS STAMPED BURNING NO 1 1958.
 HV4859'
 HV4859'AZIMUTH MARK IS 50 FEET WEST OF THE CENTER OF BURDETTE ROAD, 21 FEET
 HV4859'WEST OF FENCE CORNER, 2 FEET SOUTH OF FENCE LINE AND 2 FEET EAST OF
 HV4859'WITNESS POST.  THE MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS
 HV4859'STAMPED BURNING 1958.
 HV4859'
 HV4859'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 190 AND 191,
 HV4859'ABOUT 10 MILES NORTHWEST OF WASHINGTON, D.C., GO SOUTHEAST ON
 HV4859'STATE HIGHWAY 190 FOR 1.7 MILES TO A SIDE ROAD LEFT.  TURN LEFT AND
 HV4859'GO NORTH ON BURDETTE ROAD FOR 0.15 MILE TO THE AZIMUTH MARK ON
 HV4859'LEFT AS DESCRIBED.  CONTINUE NORTH ON BURDETTE ROAD FOR 0.3 MILE
 HV4859'TO ENTRANCE TO THE BURNING TREE COUNTRY CLUB ON LEFT, TURN
 HV4859'LEFT AND GO NORTHWEST FOR 0.2 MILE TO CLUB HOUSE ON LEFT AND
 HV4859'STATION ON THE RIGHT AS DESCRIBED.
 HV4859'
 HV4859'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV4859
 HV4859                          STATION RECOVERY (1995)
 HV4859
 HV4859'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4859'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4990 ***********************************************************************
 JV4990  DESIGNATION -  BURNS
 JV4990  PID         -  JV4990
 JV4990  STATE/COUNTY-  MD/QUEEN ANNES
 JV4990  COUNTRY     -  US
 JV4990  USGS QUAD   -  CHESTERTOWN (2017)
 JV4990
 JV4990                         *CURRENT SURVEY CONTROL
 JV4990  ______________________________________________________________________
 JV4990* NAD 83(1991) POSITION- 39 07 30.60316(N) 076 05 25.50404(W)   ADJUSTED
 JV4990* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4990  ______________________________________________________________________
 JV4990  GEOID HEIGHT    -        -33.547 (meters)                     GEOID18
 JV4990  LAPLACE CORR    -         -2.51  (seconds)                    DEFLEC18
 JV4990  HORZ ORDER      -  THIRD
 JV4990
 JV4990.The horizontal coordinates were established by classical geodetic methods
 JV4990.and adjusted by the National Geodetic Survey in January 1992.
 JV4990
 JV4990.The orthometric height was scaled from a topographic map.
 JV4990
 JV4990.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4990.GEOID18 height accuracy estimate available here.
 JV4990
 JV4990.Click photographs - Photos may exist for this station.
 JV4990
 JV4990.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4990
 JV4990. The following values were computed from the NAD 83(1991) position.
 JV4990
 JV4990;                    North         East     Units Scale Factor Converg.
 JV4990;SPC MD       -   162,293.104   478,650.320   MT  0.99995929   +0 34 15.2
 JV4990;SPC MD       -   532,456.63  1,570,371.92   sFT  0.99995929   +0 34 15.2
 JV4990;UTM  18      - 4,331,232.712   405,744.224   MT  0.99970939   -0 41 17.2
 JV4990
 JV4990!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4990!SPC MD       -   1.00000530  x   0.99995929  =   0.99996459
 JV4990!UTM  18      -   1.00000530  x   0.99970939  =   0.99971469
 JV4990
 JV4990:                Primary Azimuth Mark                     Grid Az
 JV4990:SPC MD       -  ASHLAND                                  224 47 59.5
 JV4990:UTM  18      -  ASHLAND                                  226 03 31.9
 JV4990
 JV4990_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0574431232(NAD 83)
 JV4990
 JV4990|---------------------------------------------------------------------|
 JV4990| PID    Reference Object                     Distance      Geod. Az  |
 JV4990|                                                           dddmmss.s |
 JV4990| JV5001 ASHLAND                             APPROX. 1.0 KM 2252214.7 |
 JV4990|---------------------------------------------------------------------|
 JV4990
 JV4990                          SUPERSEDED SURVEY CONTROL
 JV4990
 JV4990  NAD 83(1986)-  39 07 30.59718(N)    076 05 25.51614(W) AD(       ) 3
 JV4990  NAD 27      -  39 07 30.20600(N)    076 05 26.70300(W) AD(       ) 3
 JV4990  USSD        -  39 07 30.61300(N)    076 05 26.48600(W) AD(       ) 3
 JV4990
 JV4990.Superseded values are not recommended for survey control.
 JV4990
 JV4990.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4990.See file dsdata.pdf to determine how the superseded data were derived.
 JV4990
 JV4990_MARKER: H = DRILL HOLE
 JV4990_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4990_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4990+STABILITY: SURFACE MOTION
 JV4990
 JV4990  HISTORY     - Date     Condition        Report By
 JV4990  HISTORY     - 1909     MONUMENTED       MDSFC
 JV4990  HISTORY     - 1939     SEE DESCRIPTION  CGS
 JV4990  HISTORY     - 1961     SEE DESCRIPTION  CGS
 JV4990  HISTORY     - 1976     MARK NOT FOUND   MDDNR
 JV4990
 JV4990                          STATION DESCRIPTION
 JV4990
 JV4990'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV4990'STATION IS ON THE SOUTHEASTERN SHORE OF UPPER CHESTER RIVER,
 JV4990'OPPOSITE QUAKER NECK WHARF, ABOUT 1/2 MILE NE OF ASHLAND WHARF, IN
 JV4990'MEADOWLAND, ABOUT 1 FOOT ABOVE HIGH WATER, 10 YARDS SE OF SHORE,
 JV4990'50 YARDS SW BY S OF POINT, 145 YARDS NE BY E OF FENCE, AND 200
 JV4990'YARDS NW OF ANOTHER FENCE.
 JV4990'
 JV4990'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV4990'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV4990'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 7 INCHES.  THE LETTERS
 JV4990'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV4990'MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE
 JV4990'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV4990'
 JV4990'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV4990'FOLLOWS--LEFT CHIMNEY OF HOUSE ON ASHLAND ROAD, 1 MILE, S 9 DEG
 JV4990'19 MIN W.  CHIMNEY OF HOUSE ON WESCOTT WHARF, 1-1/4 MILES, S 63 DEG
 JV4990'58 MIN W.  S PEAK OF LARGE BARN, 5/8 MILE, N 55 DEG 50 MIN W. NEAR
 JV4990'CHIMNEY OF QUAKER NECK WHARF HOUSE, 1/2 MILE, N 45 DEG 18 MIN W.
 JV4990'LEFT CHIMNEY OF OLD HOUSE, N 23 DEG 57 MIN W. LEFT TANGENT OF
 JV4990'HOOK-SHAPED POINT OF MARSH, 1/2 MILE, N 48 DEG 44 MIN E. NEAR PEAK
 JV4990'OF HOUSE, 1-1/2 MILES, N 58 DEG 13 MIN E. WINDMILL, 3/4 MILE,
 JV4990'S 80 DEG 16 MIN E. CHIMNEY OF HOUSE, 1 MILE, S 33 DEG 42 MIN E.
 JV4990
 JV4990                          STATION RECOVERY (1939)
 JV4990
 JV4990'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4990'DESCRIPTION SHOULD READ--ON THE SOUTHEASTERN SHORE OF CHESTER
 JV4990'RIVER, OPPOSITE QUAKER NECK WHARF, ABOUT 1/2 MILE NE OF THE RUINS
 JV4990'OF ASHLAND WHARF, ON THE SOUTHWESTERN SIDE OF A ROUNDED MARSH
 JV4990'POINT.  STATION IS 7 METERS W OF SHORE LINE, 37.9 METERS S OF THE
 JV4990'OUTERMOST POINT OF MARSH, WHERE THERE IS NOW A DUCK BLIND, AND 41
 JV4990'METERS SSW OF THE INNER END OF A SLOUGH.
 JV4990'
 JV4990'THE TOP OF THE STATION MARK IS BROKEN UP, BUT THE LOWER PART
 JV4990'APPEARS TO BE IN PLACE.  USE THE CENTER OF THE REMAINING PART.
 JV4990'
 JV4990'THE BEARINGS TO VARIOUS OBJECTS, GIVEN IN THE ORIGINAL DESCRIPTION,
 JV4990'WERE NOT CHECKED.
 JV4990
 JV4990                          STATION RECOVERY (1961)
 JV4990
 JV4990'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV4990'STATION MARK FOUND IN A CRUMBLED CONDITION.  IT IS NOW 5 FT. E OF
 JV4990'THE M.H.W.L. AND 80 FT. S OF THE S END OF A CONCRETE DUCK BLIND.
 JV4990
 JV4990                          STATION RECOVERY (1976)
 JV4990
 JV4990'RECOVERY NOTE BY MD DEPT OF NAT RES 1976 (GEH)
 JV4990'MSFC-USCS NOT RECOVD.
 JV4990'
 JV4990'NOT RECOVD. AFTER SHORT SEARCH.  CONC. DUCK BLIND NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7197 ***********************************************************************
 JV7197  DESIGNATION -  BURNT
 JV7197  PID         -  JV7197
 JV7197  STATE/COUNTY-  MD/MONTGOMERY
 JV7197  COUNTRY     -  US
 JV7197  USGS QUAD   -  URBANA (2016)
 JV7197
 JV7197                         *CURRENT SURVEY CONTROL
 JV7197  ______________________________________________________________________
 JV7197* NAD 83(2011) POSITION- 39 15 55.99251(N) 077 15 17.40351(W)   ADJUSTED
 JV7197* NAD 83(2011) ELLIP HT-   156.902 (meters)        (06/27/12)   ADJUSTED
 JV7197* NAD 83(2011) EPOCH   -  2010.00
 JV7197* NAVD 88 ORTHO HEIGHT -   188.8   (meters)      619.    (feet) GPS OBS
 JV7197  ______________________________________________________________________
 JV7197  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7197  GEOID HEIGHT    -        -32.270 (meters)                     GEOID93
 JV7197  GEOID HEIGHT    -        -31.919 (meters)                     GEOID18
 JV7197  NAD 83(2011) X  -  1,090,907.155 (meters)                     COMP
 JV7197  NAD 83(2011) Y  - -4,823,006.371 (meters)                     COMP
 JV7197  NAD 83(2011) Z  -  4,015,284.462 (meters)                     COMP
 JV7197  LAPLACE CORR    -          4.20  (seconds)                    DEFLEC18
 JV7197
 JV7197  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7197  Standards:
 JV7197         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7197            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7197  -------------------------------------------------------------------
 JV7197  NETWORK    1.95   2.53           0.78   0.81   1.29     -0.05757068
 JV7197  -------------------------------------------------------------------
 JV7197  Click here for local accuracies and other accuracy information.
 JV7197
 JV7197.The horizontal coordinates were established by GPS observations
 JV7197.and adjusted by the National Geodetic Survey in June 2012.
 JV7197
 JV7197.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7197.been affixed to the stable North American tectonic plate. See 
 JV7197.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7197
 JV7197.The horizontal coordinates are valid at the epoch date displayed above
 JV7197.which is a decimal equivalence of Year/Month/Day.
 JV7197
 JV7197.The orthometric height was determined by GPS observations and a
 JV7197.high-resolution geoid model.
 JV7197
 JV7197.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7197.GEOID18 height accuracy estimate available here.
 JV7197
 JV7197.Click photographs - Photos may exist for this station.
 JV7197
 JV7197.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7197
 JV7197.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7197
 JV7197.The ellipsoidal height was determined by GPS observations
 JV7197.and is referenced to NAD 83.
 JV7197
 JV7197. The following values were computed from the NAD 83(2011) position.
 JV7197
 JV7197;                    North         East     Units Scale Factor Converg.
 JV7197;SPC MD       -   177,516.967   378,007.999   MT  0.99997293   -0 09 35.8
 JV7197;SPC MD       -   582,403.58  1,240,181.24   sFT  0.99997293   -0 09 35.8
 JV7197;UTM  18      - 4,348,669.352   305,471.787   MT  1.00006595   -1 25 39.2
 JV7197
 JV7197!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7197!SPC MD       -   0.99997538  x   0.99997293  =   0.99994831
 JV7197!UTM  18      -   0.99997538  x   1.00006595  =   1.00004133
 JV7197
 JV7197_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0547148669(NAD 83)
 JV7197
 JV7197                          SUPERSEDED SURVEY CONTROL
 JV7197
 JV7197  NAD 83(2007)-  39 15 55.99276(N)    077 15 17.40427(W) AD(2002.00) 0
 JV7197  ELLIP H (02/10/07)  156.921  (m)                       GP(2002.00)    
 JV7197  ELLIP H (08/30/02)  156.884  (m)                       GP(       ) 4 2
 JV7197  NAD 83(1993)-  39 15 55.99377(N)    077 15 17.40602(W) AD(       ) 1
 JV7197  ELLIP H (11/14/94)  156.802  (m)                       GP(       ) 4 2
 JV7197  NAD 83(1991)-  39 15 55.99376(N)    077 15 17.40666(W) AD(       ) 1
 JV7197  ELLIP H (02/09/94)  156.849  (m)                       GP(       ) 4 1
 JV7197
 JV7197.Superseded values are not recommended for survey control.
 JV7197
 JV7197.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7197.See file dsdata.pdf to determine how the superseded data were derived.
 JV7197
 JV7197_MARKER: DD = SURVEY DISK
 JV7197_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7197_STAMPING: BURNT 1993
 JV7197_MARK LOGO: MD-021
 JV7197_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7197_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7197+STABILITY: SURFACE MOTION
 JV7197_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7197+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7197
 JV7197  HISTORY     - Date     Condition        Report By
 JV7197  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7197  HISTORY     - 20021113 MARK NOT FOUND   POWELL
 JV7197
 JV7197                          STATION DESCRIPTION
 JV7197
 JV7197'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7197'FROM FREDERICK, MD GO SOUTH ON I-270 TO THE CLARKSBURG EXIT (MD RTE.
 JV7197'121). GO EAST ON RTE. 121 (CLARKSBURG ROAD) FOR 1.25 MILES.
 JV7197'(2.01 KM) TURN RIGHT ON BURNT HILL ROAD. PROCEED EAST AND NORTH ON
 JV7197'BURNT HILL ROAD FOR 1.7 MILES (2.7 KM) TO STATION ON RIGHT. STATION
 JV7197'IS 10 FEET (3.0 M) NORTHEAST OF THE CENTERLINE OF A GRAVEL DRIVE AND
 JV7197'30 FEET (9.1 M) SOUTHEAST OF A POWER POLE. STATION IS BRASS DISK SET
 JV7197'IN 8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7197
 JV7197                          STATION RECOVERY (2002)
 JV7197
 JV7197'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7197'BRASS DISK IS ASSUMED TO HAVE BEEN REMOVED FROM CONCRETE. DISK NOT
 JV7197'FOUND
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7057 ***********************************************************************
 HV7057  DESIGNATION -  BURR 1908
 HV7057  PID         -  HV7057
 HV7057  STATE/COUNTY-  MD/CHARLES
 HV7057  COUNTRY     -  US
 HV7057  USGS QUAD   -  ROCK POINT (2016)
 HV7057
 HV7057                         *CURRENT SURVEY CONTROL
 HV7057  ______________________________________________________________________
 HV7057* NAD 83(1993) POSITION- 38 20 39.58878(N) 076 51 46.85655(W)   ADJUSTED
 HV7057* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7057  ______________________________________________________________________
 HV7057  GEOID HEIGHT    -        -33.636 (meters)                     GEOID18
 HV7057  LAPLACE CORR    -         -2.18  (seconds)                    DEFLEC18
 HV7057  HORZ ORDER      -  THIRD
 HV7057
 HV7057.The horizontal coordinates were established by classical geodetic methods
 HV7057.and adjusted by the National Geodetic Survey in November 1994.
 HV7057
 HV7057.The orthometric height was scaled from a topographic map.
 HV7057
 HV7057.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7057.GEOID18 height accuracy estimate available here.
 HV7057
 HV7057.Click photographs - Photos may exist for this station.
 HV7057
 HV7057.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7057
 HV7057. The following values were computed from the NAD 83(1993) position.
 HV7057
 HV7057;                    North         East     Units Scale Factor Converg.
 HV7057;SPC MD       -    75,232.590   411,975.100   MT  0.99999258   +0 05 09.5
 HV7057;SPC MD       -   246,825.59  1,351,621.64   sFT  0.99999258   +0 05 09.5
 HV7057;SPC VA N     - 2,076,494.960 3,643,092.128   MT  0.99995969   +1 01 18.0
 HV7057;SPC VA N     - 6,812,633.88 11,952,378.09   sFT  0.99995969   +1 01 18.0
 HV7057;UTM  18      - 4,245,662.716   337,193.281   MT  0.99992644   -1 09 21.8
 HV7057
 HV7057!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7057!SPC MD       -   1.00000532  x   0.99999258  =   0.99999790
 HV7057!SPC VA N     -   1.00000532  x   0.99995969  =   0.99996501
 HV7057!UTM  18      -   1.00000532  x   0.99992644  =   0.99993176
 HV7057
 HV7057:                Primary Azimuth Mark                     Grid Az
 HV7057:SPC MD       -  BOWMAN 1908                              204 02 04.3
 HV7057:SPC VA N     -  BOWMAN 1908                              203 05 55.8
 HV7057:UTM  18      -  BOWMAN 1908                              205 16 35.6
 HV7057
 HV7057_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3719345662(NAD 83)
 HV7057
 HV7057|---------------------------------------------------------------------|
 HV7057| PID    Reference Object                     Distance      Geod. Az  |
 HV7057|                                                           dddmmss.s |
 HV7057| HV7041 PERRY 1908                          APPROX. 3.1 KM 0864427.1 |
 HV7057| HV7059 BOWMAN 1908                         APPROX. 1.3 KM 2040713.8 |
 HV7057|---------------------------------------------------------------------|
 HV7057
 HV7057                          SUPERSEDED SURVEY CONTROL
 HV7057
 HV7057  NAD 83(1991)-  38 20 39.58853(N)    076 51 46.86096(W) AD(       ) 3
 HV7057  NAD 83(1986)-  38 20 39.58873(N)    076 51 46.87229(W) AD(       ) 3
 HV7057  NAD 27      -  38 20 39.07900(N)    076 51 47.93600(W) AD(       ) 3
 HV7057  USSD        -  38 20 39.83000(N)    076 51 48.05500(W) AD(       ) 3
 HV7057
 HV7057.Superseded values are not recommended for survey control.
 HV7057
 HV7057.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7057.See file dsdata.pdf to determine how the superseded data were derived.
 HV7057
 HV7057_MARKER: H = DRILL HOLE
 HV7057_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7057_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7057+STABILITY: SURFACE MOTION
 HV7057
 HV7057  HISTORY     - Date     Condition        Report By
 HV7057  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7057  HISTORY     - 1942     GOOD             CGS
 HV7057  HISTORY     - 1961     GOOD             CGS
 HV7057
 HV7057                          STATION DESCRIPTION
 HV7057
 HV7057'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7057'ON THE WESTERN SHORE OF WICOMICO RIVER, DIRECTLY OPPOSITE THE
 HV7057'MOUTH OF CHAPTICO BAY, AND 3/4 MILE N OF BOWMANS CREEK, ON HARD
 HV7057'GROUND BETWEEN A SLOPING BANK 10 FEET HIGH, COVERED WITH TREES,
 HV7057'AND THE MARSHY SHORE, ABOUT 2 FEET ABOVE HIGH-WATER MARK, 18
 HV7057'YARDS NW OF EXTREME POINT, 23 YARDS N OF SHORE, 17 YARDS SW OF
 HV7057'SHORE, AND 9 YARDS SE OF BOTTOM OF BANK.  STATION MARK IS CENTER
 HV7057'OF A STANDARD MONUMENT OF MARYLAND SHELL FISH SURVEY, WHICH IS
 HV7057'MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE AT THE TOP
 HV7057'AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND SHOWS A
 HV7057'CENTER HOLE SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK LETTERS
 HV7057'M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE LETTERS U.S.C.S.
 HV7057'UNDERNEATH THE BASE OF THE TRIANGLE. THE CENTER HOLE IS ALWAYS AT
 HV7057'THE CENTER OF THE MONUMENT AND IF THE MARKING HAS BEEN BROKEN OFF
 HV7057'WITHOUT DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE SECTION
 HV7057'MAY BE USED AS THE LOCATION OF THE STATION.  THE MONUMENT IS SET
 HV7057'VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5 INCHES
 HV7057'ABOVE THE SURFACE.  DISTANCES AND BEARINGS FROM THE STATION TO VARIOUS
 HV7057'POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT CHIMNEY OF 2 1/2-STORY
 HV7057'HOUSE, 1-1/4 MILES, S 6 DEG 22 MIN W.  CHIMNEY IN MIDDLE OF LARGE
 HV7057'HOUSE, 1-1/8 MILES, S 22 DEG 22 MIN W.  NAIL IN BLAZE IN 11-INCH
 HV7057'PERSIMMON TREE, 7.67 METERS (25.16 FEET), S 31 DEG 26 MIN W. NAIL
 HV7057'IN BLAZE IN 9-INCH PERSIMMON TREE, 2.60 METERS (8.53 FEET), N 53
 HV7057'DEG 3 MIN W.  NAIL IN BLAZE IN 10-INCH PERSIMMON TREE, 3.86 METERS
 HV7057'(12.66 FEET), N 9 DEG 27 MIN W.  MAIN CHIMNEY OF KEY HOUSE, 2-1/4
 HV7057'MILES, N 47 DEG 4 MIN E.  CHIMNEY ON MADDOX HOUSE, 3 1/8 MILES, S
 HV7057'67 DEG 31 MIN E.  W END OF PEAK OF ROOF OF HOUSE ON CHAPTICO
 HV7057'WHARF, 2-1/8 MILES, S 48 DEG 44 MIN E.
 HV7057
 HV7057                          STATION RECOVERY (1942)
 HV7057
 HV7057'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7057'STATION RECOVERED AS DESCRIBED WITH THE EXCEPTIONS BELOW--
 HV7057'
 HV7057'(1) THE STATION IS 18 YARDS N OF SHORE INSTEAD OF 23 YARDS.
 HV7057'
 HV7057'(2) THE STATION IS FLUSH WITH GROUND INSTEAD OF PROJECTING 3 TO 5
 HV7057'INCHES.
 HV7057'
 HV7057'(3) ALL TREES REFERRED TO IN THE DESCRIPTION ARE GONE.
 HV7057
 HV7057                          STATION RECOVERY (1961)
 HV7057
 HV7057'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RMS)
 HV7057'THE STATION WAS FOUND IN GOOD CONDITION.  PREVIOUS DESCRIPTION IS
 HV7057'ADEQUATE FOR RECOVERY EXCEPT THE MARK IS NOW 12 INCHES ABOVE THE
 HV7057'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7611 ***********************************************************************
 DG7611  DESIGNATION -  BURR 2
 DG7611  PID         -  DG7611
 DG7611  STATE/COUNTY-  MD/CAROLINE
 DG7611  COUNTRY     -  US
 DG7611  USGS QUAD   -  DENTON (2017)
 DG7611
 DG7611                         *CURRENT SURVEY CONTROL
 DG7611  ______________________________________________________________________
 DG7611* NAD 83(1986) POSITION- 38 57 33.2    (N) 075 47 51.1    (W)   HD_HELD2
 DG7611* NAVD 88 ORTHO HEIGHT -    14.851 (meters)       48.72  (feet) ADJUSTED
 DG7611  ______________________________________________________________________
 DG7611  GEOID HEIGHT    -        -34.683 (meters)                     GEOID18
 DG7611  DYNAMIC HEIGHT  -         14.843 (meters)       48.70  (feet) COMP
 DG7611  MODELED GRAVITY -    980,052.6   (mgal)                       NAVD 88
 DG7611
 DG7611  VERT ORDER      -  SECOND    CLASS I
 DG7611
 DG7611.The horizontal coordinates were established by autonomous hand held GPS
 DG7611.observations and have an estimated accuracy of +/- 10 meters.
 DG7611
 DG7611.The orthometric height was determined by differential leveling and
 DG7611.adjusted by the NATIONAL GEODETIC SURVEY
 DG7611.in December 2004.
 DG7611
 DG7611.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7611.GEOID18 height accuracy estimate available here.
 DG7611
 DG7611.Click photographs - Photos may exist for this station.
 DG7611
 DG7611.The dynamic height is computed by dividing the NAVD 88
 DG7611.geopotential number by the normal gravity value computed on the
 DG7611.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7611.degrees latitude (g = 980.6199 gals.).
 DG7611
 DG7611.The modeled gravity was interpolated from observed gravity values.
 DG7611
 DG7611;                    North         East    Units  Estimated Accuracy
 DG7611;SPC MD       -   144,166.      504,217.      MT  (+/- 10 meters HH2 GPS)
 DG7611
 DG7611_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3090012553(NAD 83)
 DG7611
 DG7611                          SUPERSEDED SURVEY CONTROL
 DG7611
 DG7611.No superseded survey control is available for this station.
 DG7611
 DG7611_MARKER: DD = SURVEY DISK
 DG7611_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7611_STAMPING: BURR 2 2002
 DG7611_MARK LOGO: MDSHA
 DG7611_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7611_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7611+STABILITY: SURFACE MOTION
 DG7611_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7611+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2006
 DG7611
 DG7611  HISTORY     - Date     Condition        Report By
 DG7611  HISTORY     - 2002     MONUMENTED       MDSHA
 DG7611  HISTORY     - 20061215 GOOD             USPSQD
 DG7611
 DG7611                          STATION DESCRIPTION
 DG7611
 DG7611'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7611'THE STATION IS LOCATED ABOUT 5.4 MI (8.69 KM) NORTH OF DENTON, 4.8 MI
 DG7611'(7.72 KM) EAST OF RIDGELY, AND 1.1 MI (1.77 KM) SOUTHEAST OF
 DG7611'GREENSBORO.  TO REACH THE STATION FROM THE INTERSECTION OF STATE
 DG7611'HIGHWAY 313 AND STATE HIGHWAY 314, EAST OF GREENSBORO, GO SOUTH ALONG
 DG7611'STATE HIGHWAY 313 FOR 1.0 MI (1.61 KM) TO KNIFE BOX ROAD AND THE
 DG7611'STATION ON THE LEFT.  THE STATION IS A MARYLAND STATE SURVEY DISK SET
 DG7611'IN THE TOP OF A 12 INCH (30 CM) ROUND CONCRETE MONUMENT WHICH IS FLUSH
 DG7611'WITH THE GROUND.  IT IS 84.5 FT (25.8 M) SOUTHEAST OF THE JUNCTION OF
 DG7611'THE TWO ROADS, 32.2 FT (9.8 M) NORTHEAST OF THE CENTER LINE OF KNIFE
 DG7611'BOX ROAD, 57.6 FT (17.6 M) WEST OF GUY POLE NUMBER 41369-14802, 6.7 FT
 DG7611'(2.0 M) NORTH OF TELEPHONE POLE NUMBER 976.
 DG7611
 DG7611                          STATION RECOVERY (2006)
 DG7611
 DG7611'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 DG7611'MARK IS 7 FEET FROM A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7610 ***********************************************************************
 DG7610  DESIGNATION -  BURR AZ MK
 DG7610  PID         -  DG7610
 DG7610  STATE/COUNTY-  MD/CAROLINE
 DG7610  COUNTRY     -  US
 DG7610  USGS QUAD   -  DENTON (2017)
 DG7610
 DG7610                         *CURRENT SURVEY CONTROL
 DG7610  ______________________________________________________________________
 DG7610* NAD 83(1986) POSITION- 38 57 11.2    (N) 075 48 19.3    (W)   HD_HELD2
 DG7610* NAVD 88 ORTHO HEIGHT -    14.472 (meters)       47.48  (feet) ADJUSTED
 DG7610  ______________________________________________________________________
 DG7610  GEOID HEIGHT    -        -34.689 (meters)                     GEOID18
 DG7610  DYNAMIC HEIGHT  -         14.464 (meters)       47.45  (feet) COMP
 DG7610  MODELED GRAVITY -    980,051.6   (mgal)                       NAVD 88
 DG7610
 DG7610  VERT ORDER      -  SECOND    CLASS I
 DG7610
 DG7610.The horizontal coordinates were established by autonomous hand held GPS
 DG7610.observations and have an estimated accuracy of +/- 10 meters.
 DG7610
 DG7610.The orthometric height was determined by differential leveling and
 DG7610.adjusted by the NATIONAL GEODETIC SURVEY
 DG7610.in December 2004.
 DG7610
 DG7610.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7610.GEOID18 height accuracy estimate available here.
 DG7610
 DG7610.Click photographs - Photos may exist for this station.
 DG7610
 DG7610.The dynamic height is computed by dividing the NAVD 88
 DG7610.geopotential number by the normal gravity value computed on the
 DG7610.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7610.degrees latitude (g = 980.6199 gals.).
 DG7610
 DG7610.The modeled gravity was interpolated from observed gravity values.
 DG7610
 DG7610;                    North         East    Units  Estimated Accuracy
 DG7610;SPC MD       -   143,479.      503,547.      MT  (+/- 10 meters HH2 GPS)
 DG7610
 DG7610_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3021511881(NAD 83)
 DG7610
 DG7610                          SUPERSEDED SURVEY CONTROL
 DG7610
 DG7610.No superseded survey control is available for this station.
 DG7610
 DG7610_MARKER: DH = HORIZONTAL CONTROL DISK
 DG7610_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7610_STAMPING: BURR AZ MK 1962
 DG7610_MARK LOGO: MDBCSM
 DG7610_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7610_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7610+STABILITY: SURFACE MOTION
 DG7610_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7610+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2006
 DG7610
 DG7610  HISTORY     - Date     Condition        Report By
 DG7610  HISTORY     - 1962     MONUMENTED       MDBCSM
 DG7610  HISTORY     - 20021001 GOOD             MDSHA
 DG7610  HISTORY     - 20061215 GOOD             USPSQD
 DG7610
 DG7610                          STATION DESCRIPTION
 DG7610
 DG7610'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7610'THE STATION IS LOCATED ABOUT 4.8 MI (7.72 KM) NORTH OF DENTON, 4.3 MI
 DG7610'(6.92 KM) EAST OF RIDGELY, AND 1.4 MI (2.25 KM) SOUTH OF GREENSBORO.
 DG7610'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 313 AND
 DG7610'STATE HIGHWAY 314, EAST OF GREENSBORO, GO SOUTH ALONG STATE HIGHWAY
 DG7610'313 FOR 1.6 MI (2.57 KM) TO THE STATION ON THE RIGHT.  THE STATION IS
 DG7610'A MARYLAND STATE CONTROL DISK SET IN THE TOP OF A 6 INCH (15 CM) ROUND
 DG7610'CONCRETE MONUMENT WHICH IS 1 FOOT BELOW THE LEVEL OF THE GROUND.  IT
 DG7610'IS 29.2 FT (8.9 M) NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 95.0
 DG7610'FT (29.0 M) SOUTHWEST OF POWER POLE NUMBER 41146-14592, 25.5 FT (7.8
 DG7610'M) SOUTH OF A 15 INCH (38 CM) HICKORY TREE AND 5.7 FT (1.7 M)
 DG7610'SOUTHEAST OF A WOODEN FENCE CORNER POST AND CARSONITE WITNESS POST.
 DG7610
 DG7610                          STATION RECOVERY (2006)
 DG7610
 DG7610'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 DG7610'THE MARK IS 7.6 FEET N OF MAILBOX TO HOUSE 12600 AND IS ABOUT 8 INCHES
 DG7610'BELOW GROUND LEVEL. REFERENCED FENCE DOES NOT EXIST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2004 ***********************************************************************
 HU2004  DESIGNATION -  BURRS RM 4
 HU2004  PID         -  HU2004
 HU2004  STATE/COUNTY-  MD/CAROLINE
 HU2004  COUNTRY     -  US
 HU2004  USGS QUAD   -  BURRSVILLE (2016)
 HU2004
 HU2004                         *CURRENT SURVEY CONTROL
 HU2004  ______________________________________________________________________
 HU2004* NAD 83(1991) POSITION- 38 53 41.81248(N) 075 43 41.15139(W)   ADJUSTED
 HU2004* NAVD 88 ORTHO HEIGHT -    17.0   (meters)       56.    (feet) VERTCON3
 HU2004  ______________________________________________________________________
 HU2004  GEOID HEIGHT    -        -34.988 (meters)                     GEOID18
 HU2004  LAPLACE CORR    -         -2.87  (seconds)                    DEFLEC18
 HU2004  HORZ ORDER      -  SECOND
 HU2004
 HU2004.The horizontal coordinates were established by classical geodetic methods
 HU2004.and adjusted by the National Geodetic Survey in January 1992.
 HU2004
 HU2004.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2004.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2004
 HU2004.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2004.GEOID18 height accuracy estimate available here.
 HU2004
 HU2004.Click photographs - Photos may exist for this station.
 HU2004
 HU2004.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2004
 HU2004. The following values were computed from the NAD 83(1991) position.
 HU2004
 HU2004;                    North         East     Units Scale Factor Converg.
 HU2004;SPC MD       -   137,113.121   510,333.973   MT  0.99994990   +0 47 53.8
 HU2004;SPC MD       -   449,845.30  1,674,320.71   sFT  0.99994990   +0 47 53.8
 HU2004;UTM  18      - 4,305,370.856   436,859.265   MT  0.99964909   -0 27 25.9
 HU2004
 HU2004!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2004!SPC MD       -   1.00000283  x   0.99994990  =   0.99995273
 HU2004!UTM  18      -   1.00000283  x   0.99964909  =   0.99965192
 HU2004
 HU2004:                Primary Azimuth Mark                     Grid Az
 HU2004:SPC MD       -  STEWARD                                  355 11 10.6
 HU2004:UTM  18      -  STEWARD                                  356 26 30.3
 HU2004
 HU2004_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3685905370(NAD 83)
 HU2004
 HU2004|---------------------------------------------------------------------|
 HU2004| PID    Reference Object                     Distance      Geod. Az  |
 HU2004|                                                           dddmmss.s |
 HU2004| HU2000 KORNER AZIMUTH MARK                 APPROX. 1.9 KM 0185947.2 |
 HU2004| HU2683 BDRY MON 30 DE MD=BURRS RESET        25.042 METERS 02416     |
 HU2004| HU2702 BURRS RM 2                           46.775 METERS 05830     |
 HU2004| DC7869 BURRS RM 1 AZIMUTH                                 0814810.0 |
 HU2004| HU2684 BURRS AZ MK RESET                   APPROX. 0.7 KM 0814813.1 |
 HU2004| HU2703 BURRS RM 3                            8.560 METERS 09152     |
 HU2004| HU1980 FOUNTAINVILLE INTERSTATE LOT        APPROX.10.4 KM 1762301.1 |
 HU2004| HU1982 HICKMAN NUTTLES TOMATO STK          APPROX. 6.2 KM 1791711.5 |
 HU2004| HU2102 DENTON RM 4                         APPROX. 8.0 KM 2610454.6 |
 HU2004| HU2103 DENTON MUN TANK                     APPROX. 8.8 KM 2640356.3 |
 HU2004| HU1990 STEWARD                             APPROX. 4.9 KM 3555904.4 |
 HU2004|---------------------------------------------------------------------|
 HU2004
 HU2004                          SUPERSEDED SURVEY CONTROL
 HU2004
 HU2004  NAD 83(1986)-  38 53 41.80526(N)    075 43 41.16587(W) AD(       ) 2
 HU2004  NGVD 29 (07/19/86)   17.2    (m)           56.     (f) VERT ANG       
 HU2004
 HU2004.Superseded values are not recommended for survey control.
 HU2004
 HU2004.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2004.See file dsdata.pdf to determine how the superseded data were derived.
 HU2004
 HU2004_MARKER: DR = REFERENCE MARK DISK
 HU2004_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2004_STAMPING: BURRS NO 4 1961
 HU2004_MARK LOGO: CGS
 HU2004_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2004_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2004+STABILITY: SURFACE MOTION
 HU2004
 HU2004  HISTORY     - Date     Condition        Report By
 HU2004  HISTORY     - 1961     MONUMENTED       CGS
 HU2004  HISTORY     - 19830825 GOOD             NGS
 HU2004  HISTORY     - 20021209 MARK NOT FOUND   MDSHA
 HU2004
 HU2004                          STATION DESCRIPTION
 HU2004
 HU2004'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 HU2004'THE STATION WAS RECOVERED AND ALL MARKS WERE FOUND IN GOOD CONDITION.
 HU2004'ALL DISTANCES AND DIRECTIONS WERE WITHIN CLOSE AGREEMENT WITH THE MOST
 HU2004'RECENT INFORMATION AVAILABLE.
 HU2004'A COMPLETE NEW DESCRIPTION FOLLOWS.
 HU2004'THE STATION IS LOCATED ABOUT 9.65 KM (6.00 MI) EAST OF DENTON, 9.65 KM
 HU2004'(6.00 MI)NORTH-NORTHWEST OF ADAMSVILLE DELAWARE, IN THE SMALL VILLAGE
 HU2004'OF BURRSVILLE AND ABOUT 10.05 M (33.0 FT) WEST OF THE
 HU2004'MARYLAND-DELAWARE BOUNDARY LINE.  OWNERSHIP--MR. AND MRS. HAROLD
 HU2004'HAMMON, BURRSVILLE, MARYLAND.
 HU2004'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 404 AND 313 IN DENTON,
 HU2004'GO NORTH ON STATE HIGHWAY 313 FOR 2.35 KM (1.45 MI) TO A SIDE ROAD
 HU2004'RIGHT.  TURN RIGHT AND GO EAST ON STATE HIGHWAY 317 FOR 7.25 KM
 HU2004'(4.50 MI) TO A CROSSROADS IN THE VILLAGE OF BURRSVILLE.  CONTINUE EAST
 HU2004'ON STATE HIGHWAY 317 FOR 0.15 KM (0.10 MI) TO THE STATION ON THE
 HU2004'RIGHT.
 HU2004'THE DISK IS SET IN THE TOP OF THE 0.25 M (0.8 FT) SQUARE CONCRETE
 HU2004'MONUMENT WHICH IS RECESSED 0.3 M (1.0 FT) BELOW THE SURFACE OF A
 HU2004'CULTIVATED FIELD.  IT IS 64.0 M (210.0 FT) SOUTH OF THE CENTER OF
 HU2004'STATE HIGHWAY 317, 50.45 M (165.5 FT) WEST OF THE CENTER OF A PRIVATE
 HU2004'DRIVE, 11.27 M (37.0 FT) WEST OF A DITCH, 8.9 M (29.2 FT) WEST OF A
 HU2004'CARSONITE WITNESS POST AND 30.47 M (100.0 FT) OF THE T-INTERSECTION OF
 HU2004'TWO DITCHES.
 HU2004
 HU2004                          STATION RECOVERY (2002)
 HU2004
 HU2004'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2004'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE DESCRIBED AREA
 HU2004'NOW HAS ABANDONED CARS PARKED THERE AND IS OVERGROWN WITH HEAVY BRUSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5932 ***********************************************************************
 JV5932  DESIGNATION -  BURT
 JV5932  PID         -  JV5932
 JV5932  STATE/COUNTY-  MD/MONTGOMERY
 JV5932  COUNTRY     -  US
 JV5932  USGS QUAD   -  BELTSVILLE (2016)
 JV5932
 JV5932                         *CURRENT SURVEY CONTROL
 JV5932  ______________________________________________________________________
 JV5932* NAD 83(2011) POSITION- 39 07 17.29443(N) 076 55 36.96156(W)   ADJUSTED
 JV5932* NAD 83(2011) ELLIP HT-   118.521 (meters)        (06/27/12)   ADJUSTED
 JV5932* NAD 83(2011) EPOCH   -  2010.00
 JV5932* NAVD 88 ORTHO HEIGHT -   150.6   (meters)      494.    (feet) GPS OBS
 JV5932  ______________________________________________________________________
 JV5932  NAVD 88 orthometric height was determined with geoid model    GEOID96
 JV5932  GEOID HEIGHT    -        -32.074 (meters)                     GEOID96
 JV5932  GEOID HEIGHT    -        -32.075 (meters)                     GEOID18
 JV5932  NAD 83(2011) X  -  1,120,770.734 (meters)                     COMP
 JV5932  NAD 83(2011) Y  - -4,826,501.978 (meters)                     COMP
 JV5932  NAD 83(2011) Z  -  4,002,862.822 (meters)                     COMP
 JV5932  LAPLACE CORR    -         -3.45  (seconds)                    DEFLEC18
 JV5932
 JV5932  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV5932  Standards:
 JV5932         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV5932            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV5932  -------------------------------------------------------------------
 JV5932  NETWORK    2.22   3.00           0.90   0.91   1.53      0.00761842
 JV5932  -------------------------------------------------------------------
 JV5932  Click here for local accuracies and other accuracy information.
 JV5932
 JV5932.The horizontal coordinates were established by GPS observations
 JV5932.and adjusted by the National Geodetic Survey in June 2012.
 JV5932
 JV5932.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV5932.been affixed to the stable North American tectonic plate. See 
 JV5932.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV5932
 JV5932.The horizontal coordinates are valid at the epoch date displayed above
 JV5932.which is a decimal equivalence of Year/Month/Day.
 JV5932
 JV5932.The orthometric height was determined by GPS observations and a
 JV5932.high-resolution geoid model.
 JV5932
 JV5932.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5932.GEOID18 height accuracy estimate available here.
 JV5932
 JV5932.Click photographs - Photos may exist for this station.
 JV5932
 JV5932.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV5932
 JV5932.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5932
 JV5932.The ellipsoidal height was determined by GPS observations
 JV5932.and is referenced to NAD 83.
 JV5932
 JV5932. The following values were computed from the NAD 83(2011) position.
 JV5932
 JV5932;                    North         East     Units Scale Factor Converg.
 JV5932;SPC MD       -   161,493.399   406,318.369   MT  0.99995901   +0 02 45.1
 JV5932;SPC MD       -   529,832.93  1,333,062.85   sFT  0.99995901   +0 02 45.1
 JV5932;UTM  18      - 4,332,024.232   333,422.629   MT  0.99994167   -1 12 58.0
 JV5932
 JV5932!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5932!SPC MD       -   0.99998141  x   0.99995901  =   0.99994042
 JV5932!UTM  18      -   0.99998141  x   0.99994167  =   0.99992308
 JV5932
 JV5932:                Primary Azimuth Mark                     Grid Az
 JV5932:SPC MD       -  BURT AZ MK                               020 45 41.5
 JV5932:UTM  18      -  BURT AZ MK                               022 01 24.6
 JV5932
 JV5932_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3342232024(NAD 83)
 JV5932
 JV5932|---------------------------------------------------------------------|
 JV5932| PID    Reference Object                     Distance      Geod. Az  |
 JV5932|                                                           dddmmss.s |
 JV5932| JV6698 BURT AZ MK                                         0204826.6 |
 JV5932| JV6696 BURTON RM 1                          12.326 METERS 02728     |
 JV5932| CB1032 BURTON                                             0331953.3 |
 JV5932| JV5933 BURT RM 3                             7.328 METERS 18929     |
 JV5932| JV5962 BURTONSVILLE LOT BURTON WSSD          7.722 METERS 28747     |
 JV5932| JV6697 BURTON RM 2                          21.331 METERS 30401     |
 JV5932|---------------------------------------------------------------------|
 JV5932
 JV5932                          SUPERSEDED SURVEY CONTROL
 JV5932
 JV5932  NAD 83(2007)-  39 07 17.29441(N)    076 55 36.96259(W) AD(2002.00) 0
 JV5932  ELLIP H (02/10/07)  118.567  (m)                       GP(2002.00)    
 JV5932  ELLIP H (08/30/02)  118.569  (m)                       GP(       ) 4 2
 JV5932  NAD 83(1991)-  39 07 17.29412(N)    076 55 36.96241(W) AD(       ) 1
 JV5932  ELLIP H (07/06/97)  118.482  (m)                       GP(       ) 3 1
 JV5932  NAD 83(1991)-  39 07 17.29329(N)    076 55 36.96218(W) AD(       ) 2
 JV5932  NAD 83(1986)-  39 07 17.29224(N)    076 55 36.97200(W) AD(       ) 2
 JV5932  NAD 27      -  39 07 16.90335(N)    076 55 38.06390(W) AD(       ) 2
 JV5932  NGVD 29 (07/19/86)  150.8    (m)          495.     (f) VERT ANG       
 JV5932
 JV5932.Superseded values are not recommended for survey control.
 JV5932
 JV5932.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5932.See file dsdata.pdf to determine how the superseded data were derived.
 JV5932
 JV5932_MARKER: DS = TRIANGULATION STATION DISK
 JV5932_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5932_STAMPING: BURT 1942
 JV5932_MARK LOGO: CGS
 JV5932_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 JV5932_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5932+STABILITY: SURFACE MOTION
 JV5932_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV5932+SATELLITE: SATELLITE OBSERVATIONS - June 24, 2009
 JV5932
 JV5932  HISTORY     - Date     Condition        Report By
 JV5932  HISTORY     - 1942     MONUMENTED       CGS
 JV5932  HISTORY     - 1942     GOOD             CGS
 JV5932  HISTORY     - 1957     GOOD             LOCENG
 JV5932  HISTORY     - 1957     GOOD             CGS
 JV5932  HISTORY     - 1970     GOOD             NGS
 JV5932  HISTORY     - 19900303 GOOD             WSSC
 JV5932  HISTORY     - 19960310 GOOD             MSI
 JV5932  HISTORY     - 20051226 GOOD             GPSSS
 JV5932  HISTORY     - 20090624 GOOD             NGS
 JV5932
 JV5932                          STATION DESCRIPTION
 JV5932
 JV5932'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 JV5932'THE STATION IS ABOUT 0.75 MILE NE OF THE VILLAGE OF BURTONSVILLE,
 JV5932'AT THE SITE OF THE BURTONSVILLE LOOKOUT TOWER.  IT IS 25.32 FEET
 JV5932'ESE FROM THE CENTER OF THE LOOKOUT TOWER.  IT IS STAMPED BURT 1942
 JV5932'AND IS SET FLUSH.
 JV5932'
 JV5932'SURFACE AND UNDERGROUND MARKS ARE BRONZE DISDS SET IN CONCRETE, AS
 JV5932'DESCRIBED.
 JV5932'
 JV5932'REFERENCE MARK NO. 1 IS NNE OF THE STATION, IN THE CENTER OF A LINE
 JV5932'OF TREES, 47 FEET NE FROM THE STEPS OF THE LOOKOUT TOWER.  IT IS
 JV5932'A WASHINGTON SUBURBAN SANITARY DISTRICT DISK SET IN THE TOP OF A
 JV5932'4-INCH IRON PIPE THAT PROJECTS ABOUT 4 INCHES.  IT IS STAMPED
 JV5932'BURTON REFERENCE MARK NO.1 SET BY B.E.H. OCT 1938.
 JV5932'
 JV5932'REFERENCE MARK NO.2 IS NW OF THE STATION, IN CIRCLE FORMED BY
 JV5932'DRIVEWAY, 42.7 FEET NW FROM THE LOOKOUT TOWER STEPS.  IT IS A
 JV5932'W.S.S.D. DISK SET IN THE TOP OF A 4-INCH IRON PIPE THAT PROJECTS
 JV5932'ABOUT 4 INCHES.  IT IS STAMPED BURTON REFERENCE MARK NO.2 SET BY
 JV5932'B.E.H. OCT 1938.
 JV5932'
 JV5932'THE AZIMUTH MARK IS 0.2 MILE NE OF THE STATION, IN YARD OF FIRST
 JV5932'HOUSE TO THE NE OF THE STATION, IN FENCE LINE, 22 FEET SE FROM
 JV5932'POWER-LINE POLE NO. 315124, 37 FEET SE FROM THE CENTER OF THE
 JV5932'ROAD, AND 40 FEET NE OF THE DRIVEWAY.  IT IS A W.S.S.D. DISK
 JV5932'SET IN THE TOP OF A 4-INCH IRON PIPE THAT PROJECTS ABOUT 3 INCHES.
 JV5932'IT IS STAMPED BURTON SET OCT 1938 B.E.H.
 JV5932'
 JV5932'A TRAVERSE CONNECTION WAS MADE TO BURTON (W.S.S.D.) WHICH IS LOCATED
 JV5932'IN THE EXACT CENTER OF THE LOOKOUT TOWER SO THIS CONNECTION IS TO
 JV5932'BE CONSTRUED AS A CONNECTION TO THE BURTONSVILLE LOOKOUT TOWER
 JV5932'ALSO.  THE MARK IS A W.S.S.D. DISK SET IN THE TOP OF A 4-INCH IRON
 JV5932'PIPE THAT PROJECTS ABOUT 2 INCHES.  THE LOOKOUT TOWER IS A
 JV5932'FOUR-LEGGED STEEL STRUCTURE WITH A GLASS-ENCLOSED CAB ON TOP.  IT IS
 JV5932'ABOUT 100 FEET HIGH.  IT IS STATE OWNED BUT IS NOW USED BY THE
 JV5932'U.S. ARMY AS AN OBSERVATION POST.
 JV5932'
 JV5932'TO REACH THE STATION FROM THE BURTONSVILLE POST OFFICE GO NNE ON
 JV5932'HARD SURFACE ROAD FOR 1.05 MILES TO THE LOOKOUT TOWER ON THE RIGHT
 JV5932'AND THE STATION.
 JV5932'
 JV5932'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION STABLER 1869.
 JV5932'
 JV5932'A 37-FOOT TOWER WILL SEE A 4-FOOT LIGHT AT STATION MINK W BASE
 JV5932'(W.S.S.D.).
 JV5932'
 JV5932'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION MINK E BASE
 JV5932'(W.S.S.D.).
 JV5932'
 JV5932'A 50-FOOT TOWER WILL SEE A 4-FOOT LIGHT AT STATION RENN (W.S.S.D.).
 JV5932'
 JV5932'A 4-FOOT STAND WILL SEE A 120-FOOT LIGHT AT STATION COGGINS 2.
 JV5932'
 JV5932'HEIGHT OF LIGHT ABOVE STATION MARK - 23 METERS.
 JV5932
 JV5932                          STATION RECOVERY (1942)
 JV5932
 JV5932'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV5932'RECOVERED IN GOOD CONDITION.
 JV5932
 JV5932                          STATION RECOVERY (1957)
 JV5932
 JV5932'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1957 (AEG)
 JV5932'STATION LOCATED AND VERIFIED BY POTOMAC ELECTRIC CO. ENGINEERS AND
 JV5932'SURVEYORS.
 JV5932'
 JV5932'STATION FOUND TO BE IN GOOD CONDITION.  REFERENCE MARK IN GOOD
 JV5932'CONDITION.  DESCRIPTION OF STATION IS ACCURATE EXCEPT AZIMUTH MARK
 JV5932'DESTROYED.
 JV5932
 JV5932                          STATION RECOVERY (1957)
 JV5932
 JV5932'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5932'STATION, REFERENCE MARKS 1 AND 2 AND STATION BURTON (W.S.S.D.)
 JV5932'RECOVERED AS DESCRIBED AND FOUND IN GOOD CONDITION.  AZIMUTH MARK
 JV5932'WAS NOT FOUND AND IS BELIEVED TO BE DESTROYED.  THEREFORE A NEW
 JV5932'AZIMUTH MARK WAS ESTABLISHED.
 JV5932'
 JV5932'DUE TO OBSTRUCTION BY A LOOKOUT TOWER, REFERENCE MARK 2 WAS NOT
 JV5932'CHECKED.  HOWEVER A CHECK WAS MADE OF THE DISTANCE AND DIRECTION TO
 JV5932'REFERENCE MARK 1 AND STATION BURTON (W.S.S.D.) 1938 AND FOUND TO
 JV5932'BE CORRECT.
 JV5932'
 JV5932'THE 1942 DESCRIPTION IS ADEQUATE EXCEPT THE ROAD IS NOW U.S. HIGHWAY
 JV5932'29.
 JV5932'
 JV5932'AZIMUTH MARK IS 0.25 MI. N-NE OF THE STATION, 26 FT. E OF THE
 JV5932'APPROXIMATE CENTERLINE OF WOODS ROAD, AND 1-1/2 FT. W-NW OF A
 JV5932'WITNESS POST.  THE MARK PROJECTS 6 IN. AND THE DISK IS STAMPED
 JV5932'BURT 1957.
 JV5932'
 JV5932'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 29 AND STATE
 JV5932'HIGHWAY 198 (ABOUT 1/2 MI. E OF BURTONSVILLE), GO NE ON U.S. HIGHWAY
 JV5932'29 FOR 0.85 MI. TO BURTONSVILLE LOOKOUT TOWER AND THE STATION ON
 JV5932'THE RIGHT (E) SIDE OF THE ROAD.  CONTINUE NE ON U.S. HIGHWAY 29 FOR
 JV5932'0.1 MI. TO A SIDE ROAD LEFT.  TURN LEFT AND GO NW, THENCE N ON
 JV5932'A GRAVEL ROAD FOR 0.1 MI. TO AZIMUTH MARK ON THE RIGHT (E) SIDE
 JV5932'OF THE ROAD AS DESCRIBED.
 JV5932
 JV5932                          STATION RECOVERY (1970)
 JV5932
 JV5932'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5932'THE STATION MARK, REFERENCE MARKS 1 AND 2 AND THE 1957 AZIMUTH MARK
 JV5932'WERE FOUND IN GOOD CONDITION.  DIRECTIONS WERE NOT TURNED TO
 JV5932'REFERENCE MARK 2 AND THE AZIMUTH MARK BECAUSE THEY WERE OBSTRUCTED
 JV5932'BY A FENCE AND SHRUBBERY RESPECTFULLY.  THE ROUTING TO THE AZIMUTH
 JV5932'MARK IS NOT ADEQUATE AND A NEW ROUTING FOLLOWS.
 JV5932'
 JV5932'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTHERLY ON U. S.
 JV5932'HIGHWAY 29 FOR 0.05 MILE TO A CROSSROAD (DUSTIN ROAD).  TURN LEFT
 JV5932'AND GO NORTHWEST ON DUSTIN ROAD FOR 100 FEET TO A GRAVEL ROAD ON THE
 JV5932'RIGHT.  TURN RIGHT AND GO NORTHEAST ON THE GRAVEL ROAD FOR 0.15
 JV5932'MILE TO A SHARP LEFT TURN IN THE ROAD AND THE AZIMUTH MARK ON
 JV5932'THE RIGHT.
 JV5932'
 JV5932'DUE TO THE PROXIMITY OF THE STATION TO A FENCE, A TOWER COULD NOT
 JV5932'BE BUILT OVER THE STATION MARK.  A REFERENCE MARK 3 WAS ESTABLISHED
 JV5932'AND OCCUPIED.
 JV5932'
 JV5932'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--0.75 MILE
 JV5932'NORTHEAST OF BURTONSVILLE.
 JV5932
 JV5932                          STATION RECOVERY (1990)
 JV5932
 JV5932'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV5932'THE STATION IS LOCATED ABOUT 1.2 KM (0.7 MI) NE OF BURTONSVILLE, 6.2
 JV5932'KM (3.9 MI) WEST OF LAUREL AND 6.0 KM (3.7 MI) EAST OF EDNOR. TO
 JV5932'REACH THE STATIONFROM THE INTERSECTION OF STATE ROUTE 198 (SANDY
 JV5932'SPRING ROAD) AND US HIGHWAY 29 IN BURTONSVILLE, GO 1.4 KM (0.9 MI)
 JV5932'NNE ON ROUTE 29 TO A BROKEN MACADAM DRIVE ON THE EAST.  TURN RIGHT GO
 JV5932'SE 60 M (196.8 FT) TO THE LOOKOUT TOWER.  THE STATION IS SE OF THE
 JV5932'SOUTH COLUMN OF THE TOWER. OWNERSHIP--UNIVERSITY OF MARYLAND THE
 JV5932'STATION MARK IS A CGS TRIANGULATION STATION DISK STAMPED BURT 1942
 JV5932'SET IN THE TOP OF A CONCRETE MONUMENT 0.3 M (1.0 FT) SQUARE AND SET
 JV5932'FLUSH. IT IS 8.54 M (28.02 FT) NORTHEAST OF THE SOUTH CORNER OF A
 JV5932'WIRE FENCE, 2.97 M (9.74 FT) SOUTH OF THE EAST CORNER OF A WIRE FENCE
 JV5932'AND 51.5 M (169.0 FT) SE OF THE CENTERLINE OF THE NORTH BOUND LANE OF
 JV5932'ROUTE 29.
 JV5932
 JV5932                          STATION RECOVERY (1996)
 JV5932
 JV5932'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1996 (JC)
 JV5932'RECOVERED AS DESCRIBED.
 JV5932
 JV5932                          STATION RECOVERY (2005)
 JV5932
 JV5932'RECOVERY NOTE BY GPS SALES AND SERVICES 2005 (CJC)
 JV5932'RECOVERED IN GOOD CONDITION.
 JV5932
 JV5932                          STATION RECOVERY (2009)
 JV5932
 JV5932'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 JV5932'TREE GROWTH PROHIBITS GPS OBSERVATIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5933 ***********************************************************************
 JV5933  DESIGNATION -  BURT RM 3
 JV5933  PID         -  JV5933
 JV5933  STATE/COUNTY-  MD/MONTGOMERY
 JV5933  COUNTRY     -  US
 JV5933  USGS QUAD   -  BELTSVILLE (2016)
 JV5933
 JV5933                         *CURRENT SURVEY CONTROL
 JV5933  ______________________________________________________________________
 JV5933* NAD 83(2011) POSITION- 39 07 17.06006(N) 076 55 37.01185(W)   ADJUSTED
 JV5933* NAD 83(2011) ELLIP HT-   118.487 (meters)        (06/27/12)   ADJUSTED
 JV5933* NAD 83(2011) EPOCH   -  2010.00
 JV5933* NAVD 88 ORTHO HEIGHT -   150.6   (meters)      494.    (feet) GPS OBS
 JV5933  ______________________________________________________________________
 JV5933  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV5933  GEOID HEIGHT    -        -32.430 (meters)                     GEOID93
 JV5933  GEOID HEIGHT    -        -32.075 (meters)                     GEOID18
 JV5933  NAD 83(2011) X  -  1,120,770.583 (meters)                     COMP
 JV5933  NAD 83(2011) Y  - -4,826,506.668 (meters)                     COMP
 JV5933  NAD 83(2011) Z  -  4,002,857.193 (meters)                     COMP
 JV5933  LAPLACE CORR    -         -3.45  (seconds)                    DEFLEC18
 JV5933
 JV5933  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV5933  Standards:
 JV5933         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV5933            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV5933  -------------------------------------------------------------------
 JV5933  NETWORK    0.95   1.88           0.41   0.36   0.96      0.05757765
 JV5933  -------------------------------------------------------------------
 JV5933  Click here for local accuracies and other accuracy information.
 JV5933
 JV5933.The horizontal coordinates were established by GPS observations
 JV5933.and adjusted by the National Geodetic Survey in June 2012.
 JV5933
 JV5933.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV5933.been affixed to the stable North American tectonic plate. See 
 JV5933.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV5933
 JV5933.The horizontal coordinates are valid at the epoch date displayed above
 JV5933.which is a decimal equivalence of Year/Month/Day.
 JV5933
 JV5933.The orthometric height was determined by GPS observations and a
 JV5933.high-resolution geoid model.
 JV5933
 JV5933.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5933.GEOID18 height accuracy estimate available here.
 JV5933
 JV5933.Click photographs - Photos may exist for this station.
 JV5933
 JV5933.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV5933
 JV5933.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5933
 JV5933.The ellipsoidal height was determined by GPS observations
 JV5933.and is referenced to NAD 83.
 JV5933
 JV5933. The following values were computed from the NAD 83(2011) position.
 JV5933
 JV5933;                    North         East     Units Scale Factor Converg.
 JV5933;SPC MD       -   161,486.171   406,317.167   MT  0.99995901   +0 02 45.1
 JV5933;SPC MD       -   529,809.21  1,333,058.91   sFT  0.99995901   +0 02 45.1
 JV5933;UTM  18      - 4,332,017.032   333,421.268   MT  0.99994168   -1 12 58.0
 JV5933
 JV5933!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5933!SPC MD       -   0.99998141  x   0.99995901  =   0.99994042
 JV5933!UTM  18      -   0.99998141  x   0.99994168  =   0.99992309
 JV5933
 JV5933:                Primary Azimuth Mark                     Grid Az
 JV5933:SPC MD       -  BURTON                                   020 32 27.3
 JV5933:UTM  18      -  BURTON                                   021 48 10.4
 JV5933
 JV5933_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3342132017(NAD 83)
 JV5933
 JV5933|---------------------------------------------------------------------|
 JV5933| PID    Reference Object                     Distance      Geod. Az  |
 JV5933|                                                           dddmmss.s |
 JV5933| CB1032 BURTON                                             0203512.4 |
 JV5933| JV5959 BURTONSVILLE METH CH SPIRE          APPROX. 1.9 KM 2071933.5 |
 JV5933|---------------------------------------------------------------------|
 JV5933
 JV5933                          SUPERSEDED SURVEY CONTROL
 JV5933
 JV5933  NAD 83(2007)-  39 07 17.06024(N)    076 55 37.01265(W) AD(2002.00) 0
 JV5933  ELLIP H (02/10/07)  118.514  (m)                       GP(2002.00)    
 JV5933  ELLIP H (08/30/02)  118.503  (m)                       GP(       ) 4 2
 JV5933  NAD 83(1991)-  39 07 17.06107(N)    076 55 37.01207(W) AD(       ) 1
 JV5933  NAD 83(1991)-  39 07 17.05950(N)    076 55 37.01286(W) AD(       ) 1
 JV5933  ELLIP H (01/27/92)  118.453  (m)                       GP(       ) 4 1
 JV5933  NAD 83(1986)-  39 07 17.05883(N)    076 55 37.02262(W) AD(       ) 1
 JV5933  NAD 27      -  39 07 16.66961(N)    076 55 38.11465(W) AD(       ) 1
 JV5933  NGVD 29 (07/19/86)  150.8    (m)          495.     (f) VERT ANG       
 JV5933
 JV5933.Superseded values are not recommended for survey control.
 JV5933
 JV5933.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5933.See file dsdata.pdf to determine how the superseded data were derived.
 JV5933
 JV5933_MARKER: DR = REFERENCE MARK DISK
 JV5933_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5933_STAMPING: BURT 1942 NO 3 1969
 JV5933_MARK LOGO: CGS
 JV5933_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5933_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5933+STABILITY: SURFACE MOTION
 JV5933_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5933+SATELLITE: SATELLITE OBSERVATIONS - March 31, 1993
 JV5933
 JV5933  HISTORY     - Date     Condition        Report By
 JV5933  HISTORY     - 1969     MONUMENTED       CGS
 JV5933  HISTORY     - 1970     GOOD             NGS
 JV5933  HISTORY     - 19891013 GOOD
 JV5933  HISTORY     - 19900303 GOOD             WSSC
 JV5933  HISTORY     - 19901125 GOOD             MD-027
 JV5933  HISTORY     - 19910102 GOOD
 JV5933  HISTORY     - 19930331 GOOD             MSI
 JV5933
 JV5933                          STATION DESCRIPTION
 JV5933
 JV5933'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5933'THE STATION IS ABOUT 0.75 MILE NORTHEAST OF THE VILLAGE OF
 JV5933'BURTONSVILLE, AT THE SITE OF THE BURTONSVILLE LOOKOUT TOWER.
 JV5933'
 JV5933'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 198 AND
 JV5933'U.S. HIGHWAY 29, IN BURTONSVILLE, GO NORTH ON U.S. HIGHWAY 29
 JV5933'FOR 0.9 MILE TO THE LOOKOUT TOWER AND STATION ON THE RIGHT.  TO
 JV5933'REACH THE AZIMUTH MARK FROM THIS POINT, CONTINUE NORTH ON
 JV5933'U.S. HIGHWAY 29 FOR 0.05 MILE TO A CROSSROAD (DUSTIN ROAD).  TURN
 JV5933'LEFT AND GO NORTHWEST ON DUSTIN ROAD FOR 100 FEET TO A GRAVEL
 JV5933'ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTHEAST FOR 0.15 MILE
 JV5933'TO A SHARP LEFT TURN IN THE ROAD AND THE AZIMUTH MARK ON THE
 JV5933'RIGHT.
 JV5933'
 JV5933'THE STATION MARK IS A STANDARD REFERENCE MARK DISK, STAMPED
 JV5933'BURT 1942 NO 3 1969, SET IN THE TOP OF A ROUND CONCRETE POST,
 JV5933'12 INCHES IN DIAMETER, THAT IS FLUSH WITH THE GROUND SURFACE.  IT
 JV5933'IS 19.2 FEET SOUTHEAST OF THE SOUTH CORNER OF THE FENCE
 JV5933'SURROUNDING THE LOOKOUT TOWER AND 35.1 FEET NORTH-NORTHEAST OF
 JV5933'THE SOUTH GUY ANCHOR FOR THE LOOKOUT TOWER.
 JV5933'
 JV5933'REFERENCE MARK 1 IS A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV5933'DISK, STAMPED BURTON REFERENCE MARK NO 1 SET BY B.E.H. OCT 1938,
 JV5933'SET IN THE TOP OF A 4 INCH IRON PIPE THAT PROJECTS 3 INCHES.  IT
 JV5933'IS 13.8 FEET NORTH OF A CONCRETE BLOCK LATRINE, 31.5 FEET
 JV5933'NORTHEAST OF THE EAST CORNER OF THE FENCE SURROUNDING THE
 JV5933'LOOKOUT TOWER AND IN THE CENTER OF A LINE OF TREES.
 JV5933'
 JV5933'BURTON WSSD 1942 IS A WASHINGTON SUBURBAN SANITARY DISTRICT
 JV5933'TRIANGULATION DISK, STAMPED BURTON SET BY B.E.H. OCT 1938, SET
 JV5933'IN THE TOP OF A 4 INCH IRON PIPE THAT IS 1 INCH BELOW THE
 JV5933'GROUND SURFACE.  IT IS IN THE EXACT CENTER OF THE BURTONSVILLE
 JV5933'LOOKOUT TOWER.
 JV5933'
 JV5933'BURT 1942 IS A STANDARD STATION DISK, STAMPED BURT 1942, SET
 JV5933'IN THE TOP OF A 12 INCH SQUARE CONCRETE POST THAT IS FLUSH WITH
 JV5933'THE GROUND SURFACE.  IT IS 9.6 FEET SOUTH OF THE EAST CORNER
 JV5933'OF THE FENCE SURROUNDING THE LOOKOUT TOWER AND 26.3 FEET
 JV5933'SOUTHWEST OF A CONCRETE BLOCK LATRINE.
 JV5933'
 JV5933'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED BURT 1957, SET
 JV5933'IN THE TOP OF A 12 INCH SQUARE POST THAT PROJECTS 4 INCHES.  IT
 JV5933'IS 1.5 FEET WEST OF A WITNESS POST, 2.0 FEET WEST-NORTHWEST OF
 JV5933'A 4 X 4 WOOD POST AND APPROXIMATELY 26 FEET NORTHEAST OF THE
 JV5933'CENTERLINE OF A GRAVEL ROAD.  THE AZIMUTH MARK CANNOT BE SEEN
 JV5933'FROM THE GROUND UNLESS A LOT OF SHRUBBERY IS CLEARED.
 JV5933
 JV5933                          STATION RECOVERY (1989)
 JV5933
 JV5933'RECOVERED 1989
 JV5933'RECOVERED IN GOOD CONDITION.
 JV5933
 JV5933                          STATION RECOVERY (1990)
 JV5933
 JV5933'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV5933'THE STATION IS LOCATED ABOUT 1.2 KM (0.7 MI) NE OF BURTONSVILLE, 6.2
 JV5933'KM (3.9 MI) WEST OF LAUREL AND 6.0 KM (3.7 MI) EAST OF EDNOR. TO
 JV5933'REACH THE STATIONFROM THE INTERSECTION OF STATE ROUTE 198 (SANDY
 JV5933'SPRING ROAD) AND US HIGHWAY 29 IN BURTONSVILLE, GO 1.4 KM (0.9 MI)
 JV5933'NNE ON ROUTE 29 TO A BROKEN MACADAM DRIVE ON THE EAST.  TURN RIGHT GO
 JV5933'SE 60 M (196.8 FT) TO THE LOOKOUT TOWER.  THE STATION IS SE OF THE
 JV5933'SOUTH COLUMN OF THE TOWER. OWNERSHIP--UNIVERSITY OF MARYLAND THE
 JV5933'STATION MARK IS A CGS REFERENCE MARK DISK STAMPED BURT 1942 NO3 1969
 JV5933'SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.3 M (1.0 FT) IN
 JV5933'DIAMETER AND SET FLUSH. IT IS 5.86 M (19.23 FT) EAST OF THE SOUTH
 JV5933'CORNER OF A WIRE FENCE, 10.24MSSE OF THE EAST CORNER OF A WIRE FENCE
 JV5933'AND 54.5 M (178.8 FT) SE OF THE CENTERLINE OF THE NORTH BOUND LANE OF
 JV5933'ROUTE 29. WSSD BURTON REFERENCE MARK NO 1 SET BY BEH OCT 1938, WSSD
 JV5933'BURTON REFERENCE MARK NO 2 SET BY BEH OCT 1938 AND BURT 1942 SERVE AS
 JV5933'REFERENCE MARKS FOR THIS STATION. STATION BURT 1957 SERVES AS AN
 JV5933'AZIMUTH MARK FOR THIS STATION.
 JV5933
 JV5933                          STATION RECOVERY (1990)
 JV5933
 JV5933'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 1990
 JV5933'RECOVERED IN GOOD CONDITION.
 JV5933'A LOOKOUT TOWER ABOUT 12 M (39.4 FT) FROM STATION COVERS PART OF
 JV5933'VISIBILITY SKY, IMPEDING GOOD GPS OBSERVATIONS SOMETIMES.
 JV5933'COMMENT-- NO AZIMUTH OR REFERENCE MARK STATIONS FOR THIS STATION WERE
 JV5933'INCLUDED IN THIS GPS PROJECT.
 JV5933
 JV5933                          STATION RECOVERY (1991)
 JV5933
 JV5933'RECOVERED 1991
 JV5933'RECOVERED IN GOOD CONDITION.
 JV5933
 JV5933                          STATION RECOVERY (1993)
 JV5933
 JV5933'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV5933'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5962 ***********************************************************************
 JV5962  DESIGNATION -  BURTONSVILLE LOT BURTON WSSD
 JV5962  PID         -  JV5962
 JV5962  STATE/COUNTY-  MD/MONTGOMERY
 JV5962  COUNTRY     -  US
 JV5962  USGS QUAD   -  BELTSVILLE (2016)
 JV5962
 JV5962                         *CURRENT SURVEY CONTROL
 JV5962  ______________________________________________________________________
 JV5962* NAD 83(1991) POSITION- 39 07 17.36992(N) 076 55 37.26807(W)   ADJUSTED
 JV5962* NAVD 88 ORTHO HEIGHT -   151.    (meters)      495.    (feet) SCALED
 JV5962  ______________________________________________________________________
 JV5962  GEOID HEIGHT    -        -32.075 (meters)                     GEOID18
 JV5962  LAPLACE CORR    -         -3.45  (seconds)                    DEFLEC18
 JV5962  HORZ ORDER      -  THIRD
 JV5962
 JV5962.The horizontal coordinates were established by classical geodetic methods
 JV5962.and adjusted by the National Geodetic Survey in January 1992.
 JV5962
 JV5962.The orthometric height was scaled from a topographic map.
 JV5962
 JV5962.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5962.GEOID18 height accuracy estimate available here.
 JV5962
 JV5962.Click photographs - Photos may exist for this station.
 JV5962
 JV5962.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5962
 JV5962. The following values were computed from the NAD 83(1991) position.
 JV5962
 JV5962;                    North         East     Units Scale Factor Converg.
 JV5962;SPC MD       -   161,495.721   406,311.004   MT  0.99995902   +0 02 44.9
 JV5962;SPC MD       -   529,840.54  1,333,038.69   sFT  0.99995902   +0 02 44.9
 JV5962;UTM  18      - 4,332,026.716   333,415.318   MT  0.99994170   -1 12 58.2
 JV5962
 JV5962!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5962!SPC MD       -   0.99998137  x   0.99995902  =   0.99994040
 JV5962!UTM  18      -   0.99998137  x   0.99994170  =   0.99992308
 JV5962
 JV5962_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3341532026(NAD 83)
 JV5962
 JV5962                          SUPERSEDED SURVEY CONTROL
 JV5962
 JV5962  NAD 83(1986)-  39 07 17.36870(N)    076 55 37.27809(W) AD(       ) 3
 JV5962  NAD 27      -  39 07 16.97997(N)    076 55 38.36984(W) AD(       ) 3
 JV5962
 JV5962.Superseded values are not recommended for survey control.
 JV5962
 JV5962.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5962.See file dsdata.pdf to determine how the superseded data were derived.
 JV5962
 JV5962_MARKER: DD = SURVEY DISK
 JV5962_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV5962_STAMPING: BURTON WSSD 1938
 JV5962_MARK LOGO: WSSC
 JV5962_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5962_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5962_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5962+SATELLITE: SATELLITE OBSERVATIONS - March 03, 1990
 JV5962
 JV5962  HISTORY     - Date     Condition        Report By
 JV5962  HISTORY     - 1942     MONUMENTED       WSSC
 JV5962  HISTORY     - 1942     GOOD             CGS
 JV5962  HISTORY     - 1942     GOOD             WSSC
 JV5962  HISTORY     - 1970     GOOD             NGS
 JV5962  HISTORY     - 19900303 GOOD             WSSC
 JV5962
 JV5962                          STATION DESCRIPTION
 JV5962
 JV5962'DESCRIBED BY WASH SUBURB SAN COMM 1942 (GWL)
 JV5962'THE STATION IS LOCATED ABOUT 0.75 MILE NE OF THE VILLAGE OF
 JV5962'BURTONSVILLE.  THE TOWER IS A FOUR-LEGGED STEEL STRUCTURE WITH A
 JV5962'GLASS-ENCLOSED CAB ON THE TOP, ABOUT 100 FEET HIGH.  IT IS OWNED BY
 JV5962'THE STATE BUT IS NOW BEING USED BY THE ARMY AS AN OBSERVATION
 JV5962'POST.
 JV5962'
 JV5962'THE STATION IS LOCATED ABOUT 0.75 MILE NE OF THE VILLAGE OF
 JV5962'BURTONSVILLE, UNDER THE EXACT CENTER OF THE LOOKOUT TOWER.  IT IS
 JV5962'A WASHINGTON SUBURBAN SANITARY DISTRICT TRIANGULATION
 JV5962'DISK SET IN THE TOP OF A 4-INCH IRON PIPE THAT PROJECTS ABOUT  2
 JV5962'INCHES.
 JV5962'
 JV5962'TO REACH FROM THE BURTONSVILLE POST OFFICE GO NNE ON HARD-SURFACED
 JV5962'ROAD FOR 1.05 MILES TO THE STATION ON THE RIGHT.
 JV5962'
 JV5962'CONNECTED BY TRAVERSE FROM STATION BURT.  DISTANCE 7.719 METERS
 JV5962'(25.32 FEET).
 JV5962
 JV5962                          STATION RECOVERY (1942)
 JV5962
 JV5962'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 JV5962'BOTH STATIONS WERE RECOVERED AS DESCRIBED EXCEPT THAT THE BURTONSVILLE
 JV5962'LOOKOUT TOWER IS 120 FEET TALL AND BURTON WSSD 1942 HAS BEEN TRAVERSED
 JV5962'TO BURT 1942 RM 3, THE DISTANCE BEING 11.363 METERS (37.28 FEET).
 JV5962
 JV5962                          STATION RECOVERY (1942)
 JV5962
 JV5962'RECOVERY NOTE BY WASH SUBURB SAN COMM 1942
 JV5962'RECOVERED IN GOOD CONDITION.
 JV5962
 JV5962                          STATION RECOVERY (1970)
 JV5962
 JV5962'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5962'BOTH STATIONS WERE RECOVERED AS DESCRIBED EXCEPT THAT THE
 JV5962'BURTONSVILLE LOOKOUT TOWER IS 120 FEET TALL AND BURTON WSSD 1942
 JV5962'HAS BEEN TRAVERSED TO BURT 1942 RM 3.  THE DISTANCE BEING 11.363
 JV5962'METERS (37.28 FEET)
 JV5962
 JV5962                          STATION RECOVERY (1990)
 JV5962
 JV5962'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV5962'THE STATION IS LOCATED ABOUT 1.2 KM (0.7 MI) NE OF BURTONSVILLE, 6.2
 JV5962'KM (3.9 MI) WEST OF LAUREL AND 6.0 KM (3.7 MI) EAST OF EDNOR. TO
 JV5962'REACH THE STATIONFROM THE INTERSECTION OF STATE ROUTE 198 (SANDY
 JV5962'SPRING ROAD) AND US HIGHWAY 29 IN BURTONSVILLE, GO 1.4 KM (0.9 MI)
 JV5962'NNE ON ROUTE 29 TO A BROKEN MACADAM DRIVE ON THE EAST.  TURN RIGHT GO
 JV5962'SE 60 M (196.8 FT) TO THE LOOKOUT TOWER.  THE STATION IS 45 M
 JV5962'(147.6 FT) SE OF THE CENTERLINE OF THE NORTH BOUND LANE OF RTE
 JV5962'29. OWNERSHIP--UNIVERSITY OF MARYLAND THE STATION MARK IS A WSSC
 JV5962'TRINGULATION DISK STAMPED BURTON 1938 SET IN THE TOP OF A ROUND PIPE
 JV5962'0.10 M (0.33 FT) IN DIAMETER AND SET FLUSH. IT IS IN THE CENTER OF
 JV5962'THE LOOKOUT TOWER FENCED AREA 0.10 M (0.33 FT) EAST OF THE EAST OF A
 JV5962'BLOCK BUILDING FOOTER. THIS STATION MAY HAVE BEEN DISTUBED DURING
 JV5962'CONSTRUCTION OF THE BLOCK BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5959 ***********************************************************************
 JV5959  DESIGNATION -  BURTONSVILLE METH CH SPIRE
 JV5959  PID         -  JV5959
 JV5959  STATE/COUNTY-  MD/MONTGOMERY
 JV5959  COUNTRY     -  US
 JV5959  USGS QUAD   -  BELTSVILLE (2016)
 JV5959
 JV5959                         *CURRENT SURVEY CONTROL
 JV5959  ______________________________________________________________________
 JV5959* NAD 83(1991) POSITION- 39 06 22.54430(N) 076 56 13.16612(W)   ADJUSTED
 JV5959  ______________________________________________________________________
 JV5959  GEOID HEIGHT    -        -32.060 (meters)                     GEOID18
 JV5959  LAPLACE CORR    -         -3.30  (seconds)                    DEFLEC18
 JV5959  HORZ ORDER      -  THIRD
 JV5959
 JV5959.The horizontal coordinates were established by classical geodetic methods
 JV5959.and adjusted by the National Geodetic Survey in January 1992.
 JV5959
 JV5959.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5959.GEOID18 height accuracy estimate available here.
 JV5959
 JV5959.Click photographs - Photos may exist for this station.
 JV5959
 JV5959.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5959
 JV5959. The following values were computed from the NAD 83(1991) position.
 JV5959
 JV5959;                    North         East     Units Scale Factor Converg.
 JV5959;SPC MD       -   159,804.424   405,449.875   MT  0.99995791   +0 02 22.4
 JV5959;SPC MD       -   524,291.68  1,330,213.46   sFT  0.99995791   +0 02 22.4
 JV5959;UTM  18      - 4,330,354.816   332,517.167   MT  0.99994540   -1 13 19.4
 JV5959
 JV5959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3251730354(NAD 83)
 JV5959
 JV5959                          SUPERSEDED SURVEY CONTROL
 JV5959
 JV5959  NAD 83(1986)-  39 06 22.54346(N)    076 56 13.17596(W) AD(       ) 3
 JV5959  NAD 27      -  39 06 22.15379(N)    076 56 14.26641(W) AD(       ) 3
 JV5959
 JV5959.Superseded values are not recommended for survey control.
 JV5959
 JV5959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5959.See file dsdata.pdf to determine how the superseded data were derived.
 JV5959
 JV5959_MARKER: 90 = CHURCH SPIRE
 JV5959_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5959+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2003
 JV5959
 JV5959  HISTORY     - Date     Condition        Report By
 JV5959  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV5959  HISTORY     - 20031129 GOOD             USPSQD
 JV5959
 JV5959                          STATION DESCRIPTION
 JV5959
 JV5959'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV5959'THE STATION IS THE BURTONSVILLE LIBERTY GROVE METHODIST CHURCH
 JV5959'SPIRE.  THE POINT OBSERVED WAS THE CENTER OF THE BASE OF THE CROSS
 JV5959'ON THE TOP OF THE 105 FOOT HIGH SPIRE.
 JV5959'
 JV5959'IT IS LOCATED IN THE SOUTHEAST PORTION OF BURTONSVILLE 200 FEET
 JV5959'SOUTH OF STATE HIGHWAY 196 (OLD COLUMBIA PIKE) AND 200 FEET
 JV5959'EAST OF TOLSON PLACE.
 JV5959
 JV5959                          STATION RECOVERY (2003)
 JV5959
 JV5959'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV5959'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3749 ***********************************************************************
 JV3749  DESIGNATION -  BUS
 JV3749  PID         -  JV3749
 JV3749  STATE/COUNTY-  MD/HARFORD
 JV3749  COUNTRY     -  US
 JV3749  USGS QUAD   -  EDGEWOOD (2016)
 JV3749
 JV3749                         *CURRENT SURVEY CONTROL
 JV3749  ______________________________________________________________________
 JV3749* NAD 83(1991) POSITION- 39 26 51.54669(N) 076 21 09.31975(W)   ADJUSTED
 JV3749* NAVD 88 ORTHO HEIGHT -    63.056 (meters)      206.88  (feet) ADJUSTED
 JV3749  ______________________________________________________________________
 JV3749  GEOID HEIGHT    -        -32.988 (meters)                     GEOID18
 JV3749  LAPLACE CORR    -         -3.88  (seconds)                    DEFLEC18
 JV3749  DYNAMIC HEIGHT  -         63.023 (meters)      206.77  (feet) COMP
 JV3749  MODELED GRAVITY -    980,102.3   (mgal)                       NAVD 88
 JV3749
 JV3749  HORZ ORDER      -  SECOND
 JV3749  VERT ORDER      -  FIRST     CLASS II
 JV3749
 JV3749.The horizontal coordinates were established by classical geodetic methods
 JV3749.and adjusted by the National Geodetic Survey in January 1992.
 JV3749
 JV3749.The orthometric height was determined by differential leveling and
 JV3749.adjusted by the NATIONAL GEODETIC SURVEY
 JV3749.in June 1991.
 JV3749
 JV3749.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3749.GEOID18 height accuracy estimate available here.
 JV3749
 JV3749.Click photographs - Photos may exist for this station.
 JV3749
 JV3749.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3749
 JV3749.The dynamic height is computed by dividing the NAVD 88
 JV3749.geopotential number by the normal gravity value computed on the
 JV3749.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3749.degrees latitude (g = 980.6199 gals.).
 JV3749
 JV3749.The modeled gravity was interpolated from observed gravity values.
 JV3749
 JV3749. The following values were computed from the NAD 83(1991) position.
 JV3749
 JV3749;                    North         East     Units Scale Factor Converg.
 JV3749;SPC MD       -   197,900.565   455,727.308   MT  0.99999959   +0 24 22.8
 JV3749;SPC MD       -   649,278.77  1,495,165.34   sFT  0.99999959   +0 24 22.8
 JV3749;UTM  18      - 4,367,327.832   383,616.452   MT  0.99976677   -0 51 34.2
 JV3749
 JV3749!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3749!SPC MD       -   0.99999528  x   0.99999959  =   0.99999487
 JV3749!UTM  18      -   0.99999528  x   0.99976677  =   0.99976205
 JV3749
 JV3749:                Primary Azimuth Mark                     Grid Az
 JV3749:SPC MD       -  PROSPECT                                 165 49 42.8
 JV3749:UTM  18      -  PROSPECT                                 167 05 39.8
 JV3749
 JV3749_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8361667327(NAD 83)
 JV3749
 JV3749|---------------------------------------------------------------------|
 JV3749| PID    Reference Object                     Distance      Geod. Az  |
 JV3749|                                                           dddmmss.s |
 JV3749| JV3750 BUS RM 1                              7.510 METERS 07039     |
 JV3749| JV0410 BUS AZ MK                                          1591736.7 |
 JV3749| JV5324 PROSPECT                            APPROX. 1.3 KM 1661405.6 |
 JV3749| JV0409 BUS 2                                29.786 METERS 23938     |
 JV3749| JV3751 BUS RM 2                              6.668 METERS 33401     |
 JV3749|---------------------------------------------------------------------|
 JV3749
 JV3749                          SUPERSEDED SURVEY CONTROL
 JV3749
 JV3749  NAD 83(1986)-  39 26 51.54175(N)    076 21 09.32827(W) AD(       ) 2
 JV3749  NAD 27      -  39 26 51.15280(N)    076 21 10.47310(W) AD(       ) 2
 JV3749  NGVD 29              63.32   (m)          207.7    (f) LEVELING    3  
 JV3749  NGVD 29 (11/26/84)   63.301  (m)          207.68   (f) ADJUSTED    1 2
 JV3749
 JV3749.Superseded values are not recommended for survey control.
 JV3749
 JV3749.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3749.See file dsdata.pdf to determine how the superseded data were derived.
 JV3749
 JV3749_MARKER: DE = TRAVERSE STATION DISK
 JV3749_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3749_STAMPING: BUS 1958
 JV3749_MARK LOGO: CGS
 JV3749_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3749+STABILITY: SURFACE MOTION
 JV3749
 JV3749  HISTORY     - Date     Condition        Report By
 JV3749  HISTORY     - 1958     MONUMENTED       CGS
 JV3749  HISTORY     - 1971     SEE DESCRIPTION  NGS
 JV3749
 JV3749                          STATION DESCRIPTION
 JV3749
 JV3749'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV3749'STATION IS LOCATED ON TOP OF A HIGH CUT EMBANKMENT ALONG THE EAST
 JV3749'SIDE OF STATE HIGHWAY NO. 152 ABOUT 3-1/2 MILES NORTHWEST OF
 JV3749'EDGEWOOD AND ABOUT 0.75 MILES NORTH-NORTHWEST OF THE JUNCTION OF
 JV3749'STATE HIGHWAYS NO. 7 AND 152.  STATION IS 35 FEET EAST-NORTHEAST
 JV3749'OF APPROXIMATE CENTERLINE OF STATE HIGHWAY NO. 152, 14 FEET
 JV3749'EAST-NORTHEAST OF EDGE OF CUT EMBANKMENT, 56-1/2 FEET NORTH OF
 JV3749'POWERLINE POLE WITH TRANSFORMER, 35 PACES SOUTH OF DRIVEWAY AND
 JV3749'1-1/2 FEET EAST-NORTHEAST OF WITNESS POST.  THE MARK IS A STANDARD
 JV3749'TRAVERSE DISK SET IN A 12X12 INCH CONCRETE MONUMENT, PROJECTS 4
 JV3749'INCHES AND THE DISK IS STAMPED BUS 1958.
 JV3749'
 JV3749'REFERENCE MARK NO. 1 IS 38-1/2 FEET EAST-NORTHEAST OF EDGE OF CUT
 JV3749'EMBANKMENT AND 70 FEET NORTHEAST OF POWERLINE POLE WITH
 JV3749'TRANSFORMER.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN A
 JV3749'12X12 INCH CONCRETE MONUMENT, PROJECTS 4 INCHES AND THE DISK IS
 JV3749'STAMPED BUS NO 1 1958.
 JV3749'
 JV3749'REFERENCE MARK NO. 2 IS 14 FEET EAST-NORTHEAST OF EDGE OF CUT
 JV3749'EMBANKMENT AND 21-1/2 FEET NORTH-NORTHWEST OF WITNESS POST.  THE
 JV3749'MARK IS A STANDARD REFERENCE MARK DISK SET IN A 12X12 INCH
 JV3749'CONCRETE MONUMENT, PROJECTS 4 INCHES AND THE DISK IS STAMPED BUS
 JV3749'NO 2 1958.
 JV3749'
 JV3749'AZIMUTH MARK IS 45 FEET SOUTH OF DRIVEWAY, 18 FEET EAST-SOUTHEAST
 JV3749'OF APPROXIMATE CENTERLINE OF STATE HIGHWAY NO. 152 AND 1 FOOT
 JV3749'WEST-NORTHWEST OF WITNESS POST.  THE MARK IS A STANDARD AZIMUTH
 JV3749'MARK DISK SET IN A 12X12 INCH CONCRETE MONUMENT, PROJECTS 4 INCHES
 JV3749'AND THE DISK IS STAMPED BUS 1958.
 JV3749'
 JV3749'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 7 AND 152 WHICH
 JV3749'IS ABOUT 3.0 MILES NORTHWEST OF EDGEWOOD, GO NORTHERLY ON STATE
 JV3749'HIGHWAY NO. 152 FOR 0.5 MILE TO AZIMUTH MARK ON RIGHT (EAST) SIDE
 JV3749'OF HIGHWAY.  CONTINUE NORTHERLY ON STATE HIGHWAY NO. 152 FOR 0.15
 JV3749'MILE TO STATION ON RIGHT (EAST) SIDE OF HIGHWAY ATOP A CUT
 JV3749'EMBANKMENT AS DESCRIBED.
 JV3749'
 JV3749'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV3749
 JV3749                          STATION RECOVERY (1971)
 JV3749
 JV3749'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV3749'THE STATION, AZIMUTH MARK, REFERENCE MARK NO. 1 AND REFERENCE MARK
 JV3749'NO. 2 WERE ALL RECOVERED AND FOUND TO BE IN GOOD CONDITION.  THE
 JV3749'STATION WAS OCCUPIED AND THE DISTANCES AND DIRECTIONS TO DESCRIBED
 JV3749'OBJECTS WERE MEASURED WITH SATISFACTORY COMPARISON.
 JV3749'
 JV3749'THIS STATION, REFERENCE MARK NO. 1 AND REFERENCE MARK NO. 2 WERE
 JV3749'IN THE WAY OF NEW HIGHWAY CONSTRUCTION.  AFTER A NEW STATION BUS 2
 JV3749'WAS ESTABLISHED AND ADDITIONAL REFERENCE MARKS NOS. 3 AND 4 WERE
 JV3749'ESTABLISHED THIS STATION AND REFERENCE MARK NO. 1 AND NO. 2 WERE
 JV3749'DESTROYED.  THE AZIMUTH MARK IS NOT IN DANGER FROM NEW
 JV3749'CONSTRUCTION, IT IS ALSO A BENCH MARK, AND WAS LEFT IN ITS
 JV3749'ORIGINAL POSITION AS PREVIOUSLY DESCRIBED.
 JV3749'
 JV3749'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 0.75 MILE NORTH
 JV3749'OF JOPPA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0409 ***********************************************************************
 JV0409  DESIGNATION -  BUS 2
 JV0409  PID         -  JV0409
 JV0409  STATE/COUNTY-  MD/HARFORD
 JV0409  COUNTRY     -  US
 JV0409  USGS QUAD   -  EDGEWOOD (2016)
 JV0409
 JV0409                         *CURRENT SURVEY CONTROL
 JV0409  ______________________________________________________________________
 JV0409* NAD 83(2011) POSITION- 39 26 51.05871(N) 076 21 10.39357(W)   ADJUSTED
 JV0409* NAD 83(2011) ELLIP HT-    30.217 (meters)        (06/27/12)   ADJUSTED
 JV0409* NAD 83(2011) EPOCH   -  2010.00
 JV0409* NAVD 88 ORTHO HEIGHT -    63.184 (meters)      207.30  (feet) ADJUSTED
 JV0409  ______________________________________________________________________
 JV0409  GEOID HEIGHT    -        -32.988 (meters)                     GEOID18
 JV0409  NAD 83(2011) X  -  1,163,646.588 (meters)                     COMP
 JV0409  NAD 83(2011) Y  - -4,792,691.880 (meters)                     COMP
 JV0409  NAD 83(2011) Z  -  4,030,824.782 (meters)                     COMP
 JV0409  LAPLACE CORR    -         -3.88  (seconds)                    DEFLEC18
 JV0409  DYNAMIC HEIGHT  -         63.151 (meters)      207.19  (feet) COMP
 JV0409  MODELED GRAVITY -    980,102.3   (mgal)                       NAVD 88
 JV0409
 JV0409  VERT ORDER      -  FIRST     CLASS II
 JV0409
 JV0409  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0409  Standards:
 JV0409         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0409            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0409  -------------------------------------------------------------------
 JV0409  NETWORK    1.32   2.96           0.57   0.48   1.51      0.35691809
 JV0409  -------------------------------------------------------------------
 JV0409  Click here for local accuracies and other accuracy information.
 JV0409
 JV0409.The horizontal coordinates were established by GPS observations
 JV0409.and adjusted by the National Geodetic Survey in June 2012.
 JV0409
 JV0409.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0409.been affixed to the stable North American tectonic plate. See 
 JV0409.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0409
 JV0409.The horizontal coordinates are valid at the epoch date displayed above
 JV0409.which is a decimal equivalence of Year/Month/Day.
 JV0409
 JV0409.The orthometric height was determined by differential leveling and
 JV0409.adjusted by the NATIONAL GEODETIC SURVEY
 JV0409.in June 1991.
 JV0409
 JV0409.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0409.GEOID18 height accuracy estimate available here.
 JV0409
 JV0409.Click photographs - Photos may exist for this station.
 JV0409
 JV0409.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0409
 JV0409.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0409
 JV0409.The ellipsoidal height was determined by GPS observations
 JV0409.and is referenced to NAD 83.
 JV0409
 JV0409.The dynamic height is computed by dividing the NAVD 88
 JV0409.geopotential number by the normal gravity value computed on the
 JV0409.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0409.degrees latitude (g = 980.6199 gals.).
 JV0409
 JV0409.The modeled gravity was interpolated from observed gravity values.
 JV0409
 JV0409. The following values were computed from the NAD 83(2011) position.
 JV0409
 JV0409;                    North         East     Units Scale Factor Converg.
 JV0409;SPC MD       -   197,885.334   455,701.740   MT  0.99999957   +0 24 22.1
 JV0409;SPC MD       -   649,228.80  1,495,081.46   sFT  0.99999957   +0 24 22.1
 JV0409;UTM  18      - 4,367,313.173   383,590.559   MT  0.99976684   -0 51 34.9
 JV0409
 JV0409!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0409!SPC MD       -   0.99999526  x   0.99999957  =   0.99999483
 JV0409!UTM  18      -   0.99999526  x   0.99976684  =   0.99976210
 JV0409
 JV0409_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8359067313(NAD 83)
 JV0409
 JV0409|---------------------------------------------------------------------|
 JV0409| PID    Reference Object                     Distance      Geod. Az  |
 JV0409|                                                           dddmmss.s |
 JV0409| JV3749 BUS                                  29.786 METERS 05938     |
 JV0409| JV6355 BUS 2 RM 5                                         14854     |
 JV0409| JV0408 BUS 2 RM 3                           23.404 METERS 25630     |
 JV0409| JV0407 BUS 2 RM 4                           20.402 METERS 32009     |
 JV0409|---------------------------------------------------------------------|
 JV0409
 JV0409                          SUPERSEDED SURVEY CONTROL
 JV0409
 JV0409  NAD 83(2007)-  39 26 51.05879(N)    076 21 10.39442(W) AD(2002.00) 0
 JV0409  ELLIP H (02/10/07)   30.236  (m)                       GP(2002.00)    
 JV0409  ELLIP H (08/30/02)   30.248  (m)                       GP(       ) 4 2
 JV0409  NAD 83(1991)-  39 26 51.05843(N)    076 21 10.39457(W) AD(       ) 3
 JV0409  ELLIP H (01/27/92)   30.195  (m)                       GP(       ) 4 1
 JV0409  NAD 83(1986)-  39 26 51.05350(N)    076 21 10.40310(W) AD(       ) 3
 JV0409  NAD 27      -  39 26 50.66456(N)    076 21 11.54790(W) AD(       ) 3
 JV0409  NGVD 29 (??/??/??)   63.44   (m)          208.1    (f) RESET       3  
 JV0409  NGVD 29              63.41   (m)          208.0    (f) LEVELING    3  
 JV0409  NGVD 29              63.43   (m)          208.1    (f) LEVELING    3  
 JV0409
 JV0409.Superseded values are not recommended for survey control.
 JV0409
 JV0409.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0409.See file dsdata.pdf to determine how the superseded data were derived.
 JV0409
 JV0409_MARKER: DE = TRAVERSE STATION DISK
 JV0409_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0409_STAMPING: BUS 2 1971
 JV0409_MARK LOGO: CGS
 JV0409_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0409_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0409+STABILITY: SURFACE MOTION
 JV0409_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0409+SATELLITE: SATELLITE OBSERVATIONS - December 09, 1993
 JV0409
 JV0409  HISTORY     - Date     Condition        Report By
 JV0409  HISTORY     - 1971     MONUMENTED       NGS
 JV0409  HISTORY     - 1971     GOOD             NGS
 JV0409  HISTORY     - 1973     GOOD             NGS
 JV0409  HISTORY     - 19900102 GOOD             NGS
 JV0409  HISTORY     - 19931209 GOOD             GEOMET
 JV0409
 JV0409                          STATION DESCRIPTION
 JV0409
 JV0409'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV0409'THE STATION IS LOCATED ON TOP OF A HIGH CUT EMBANKMENT ALONG THE
 JV0409'WEST SIDE OF STATE HIGHWAY NO. 152 ABOUT 3.25 MILES NORTHWEST OF
 JV0409'EDGEWOOD AND ABOUT 0.75 MILE NORTH-NORTHWEST OF JOPPA, WHICH IS AT
 JV0409'THE INTERSECTION OF STATE HIGHWAYS NO. 7 AND 152.  SET IN THE
 JV0409'YARD OF MR. BARTON LONG, ABOUT 5 FEET WEST OF TOP OF PROPOSED TOP
 JV0409'OF CUT BANK, 36.8 FEET SOUTH-SOUTHEAST OF THE NORTHEAST CORNER OF
 JV0409'THE PORCH IN FRONT OF HOUSE, 29.8 FEET EAST-SOUTHEAST OF CORNER OF
 JV0409'STONE FOUNDATION OF HOUSE, 23.5 FEET SOUTHEAST OF THE SOUTHEAST
 JV0409'CORNER OF STEPS TO PORCH.  THE STATION MARK AND SUBSURFACE MARK
 JV0409'ARE BOTH STANDARD TRAVERSE STATION MARK DISKS.  THE SURFACE MARK
 JV0409'IS SET IN A ROUND CONCRETE POST THAT IS FLUSH WITH THE SURFACE OF THE
 JV0409'GROUND AND THE DISK IS STAMPED, BUS 2 1971.
 JV0409'
 JV0409'REFERENCE MARK NO. 3 IS A STANDARD REFERENCE MARK DISK SET IN THE
 JV0409'TOP OF A ROUND CONCRETE POST 10-INCHES IN DIAMETER AND FLUSH WITH
 JV0409'SURFACE OF THE GROUND.  THE DISK IS STAMPED, BUS 2 NO 3 1971.  IT
 JV0409'IS LOCATED IN THE BACK YARD SOUTHWEST OF THE HOUSE, 9 FEET
 JV0409'NORTH-NORTHWEST FROM THE CENTER OF TOP OF A WELL COVER, 4 FEET
 JV0409'NORTHWEST OF A 14-INCH MAPLE TREE, AND 2.6 FEET SOUTHWEST OF THE
 JV0409'SOUTHWEST CORNER OF A WELL AND PUMP HOUSE.
 JV0409'
 JV0409'REFERENCE MARK NO. 4 IS A STANDARD REFERENCE MARK DISK SET IN THE
 JV0409'TOP OF A ROUND CONCRETE POST 10-INCHES IN DIAMETER AND IS FLUSH
 JV0409'WITH SURFACE OF THE GROUND.  THE DISK IS STAMPED, BUS 2 NO 4 1971.
 JV0409'IT IS SET IN YARD NORTH OF THE HOUSE, 72 FEET WEST OF THE
 JV0409'CENTERLINE OF HIGHWAY, 46.4 FEET NORTHEAST OF THE NORTHWEST
 JV0409'CORNER OF HOUSE, 30.5 FEET NORTH OF THE NORTHEAST CORNER OF
 JV0409'HOUSE, 21 FEET EAST-NORTHEAST OF A 20-INCH OAK TREE, AND 19.6 FEET
 JV0409'SOUTH OF CENTERLINE OF A DRIVEWAY.
 JV0409'
 JV0409'THE AZIMUTH MARK FOR STATION BUS 1958 WILL NOT SEE TO THIS STATION
 JV0409'AND THERE IS NO SUITABLE LOCATION TO SET A NEW AZIMUTH MARK AT THE
 JV0409'PRESENT TIME DUE TO HIGHWAY CONSTRUCTION IN THE AREA.
 JV0409'
 JV0409'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE
 JV0409'HIGHWAY 152, ABOUT 2.75 MILES NORTHWEST OF EDGEWOOD, GO NORTH ON
 JV0409'STATE HIGHWAY NO. 152 FOR 0.25 MILE TO BRIDGE OVER RAILROAD,
 JV0409'CONTINUE NORTH FOR 0.4 MILE TO A CROSSROAD AND JUNCTION WITH STATE
 JV0409'HIGHWAY NO. 7, CONTINUE NORTH ON ST. HIGHWAY 152 FOR 0.3 MILE TO
 JV0409'BRIDGE OVER J.F.K. HWY., CROSS AND CONTINUE NORTH ON 152 FOR 0.2
 JV0409'MILE TO WOODLEA AVE. ON LEFT CONTINUE 0.05 MILE TO OLD AZIMUTH
 JV0409'MARK ON THE LEFT, CONTINUE NORTH ON HIGHWAY FOR 0.2 MILE TO THE
 JV0409'STATION ON THE LEFT ON TOP OF HIGH CUT BANK AS DESCRIBED.
 JV0409
 JV0409                          STATION RECOVERY (1971)
 JV0409
 JV0409'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0409'0.8 MI N FROM JOPPA.
 JV0409'ABOUT 0.75 MILE NORTH ALONG STATE HIGHWAY NO. 152 FROM THE
 JV0409'INTERSECTION OF STATE HIGHWAY 7 AT JOPPA, ON THE TOP OF A HIGH
 JV0409'CUT BANK ON WEST SIDE OF HIGHWAY IN THE FRONT LAWN OF MR. BARTON
 JV0409'LONG, 36.8 FEET SOUTH-SOUTHEAST OF THE NORTHEAST CORNER OF THE
 JV0409'PORCH IN FRONT OF THE HOUSE, 29.8 FEET EAST-SOUTHEAST OF CORNER
 JV0409'OF STONE FOUNDATION OF HOUSE AND 23.5 FEET SOUTHEAST OF THE
 JV0409'SOUTHEAST CORNER OF STEPS TO PORCH.  IT IS SET IN TOP OF ROUND
 JV0409'CONCRETE MONUMENT FLUSH WITH SURFACE OF GROUND.
 JV0409
 JV0409                          STATION RECOVERY (1973)
 JV0409
 JV0409'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (LFS)
 JV0409'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV0409'CONDITION AS DESCRIBED IN THE 1971 DESCRIPTION.  A NEW AZIMUTH
 JV0409'MARK WAS ESTABLISHED BY OBSERVATIONS ON POLARIS.  THE 1958 AZIMUTH
 JV0409'MARK WILL NOT SEE THE STATION.  ALL DISTANCES AND DIRECTION TO ALL
 JV0409'MARKS WERE WITHIN CLOSE AGREEMENT WITH THE 1971 OBSERVATIONS.
 JV0409'
 JV0409'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV0409'
 JV0409'THE STATION IS LOCATED ABOUT 3/4 MILES NORTHWEST OF THE
 JV0409'INTERSECTION OF STATE HIGHWAYS 7 AND 152, ABOUT 1/4 MILE
 JV0409'NORTHWEST OF THE INTERSECTION OF STATE HIGHWAY 152 AND INTERSTATE
 JV0409'HIGHWAY 95, ABOUT 3-1/4 MILES NORTHWEST OF EDGEWOOD AND ABOUT 15
 JV0409'MILES NORTHEAST OF BALTIMORE.  IT IS ON A HIGH CUT BANK JUST
 JV0409'SOUTH OF STATE HIGHWAY 152.  THE PROPERTY IS OWNED BY MR. CARL J.
 JV0409'EDWARDS WHO LIVES AT THE STATION SITE.
 JV0409'
 JV0409'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAY
 JV0409'95 AND STATE HIGHWAY 152 ABOUT 3 MILES NORTHWEST OF EDGEWOOD, GO
 JV0409'WEST-NORTHWEST ON STATE HIGHWAY 152 FOR 0.4 MILE TO THE STATION ON
 JV0409'THE LEFT.
 JV0409'
 JV0409'THE STATION MARK IS A STANDARD DISK STAMPED BUS 2 1971, SET IN THE
 JV0409'TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 JV0409'SURFACE.  IT IS 29.8 FEET EAST-SOUTHEAST OF THE CORNER OF THE
 JV0409'HOUSE FOUNDATION OF MR. EDWARDS HOUSE, 22.5 FEET SOUTHEAST OF THE
 JV0409'SOUTHEAST CORNER OF THE PORCH 36 FEET EAST OF THE NORTHWEST
 JV0409'CORNER OF THE PORCH AND 5 FEET WEST OF THE WEST EDGE OF THE CUTBANK.
 JV0409'
 JV0409'REFERENCE MARK 3 IS A STANDARD DISK SET IN THE TOP OF A 10-INCH
 JV0409'ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE.  IT IS 16
 JV0409'FEET SOUTHWEST OF THE SOUTHEAST CORNER OF THE HOUSE 4 FEET WEST OF
 JV0409'A 16 INCH MAPLE TREE AND 2 FEET SOUTH OF THE SOUTH EDGE OF A PUMP
 JV0409'HOUSE.
 JV0409'
 JV0409'REFERENCE MARK 4 IS A STANDARD DISK SET IN THE TOP OF A 10-INCH
 JV0409'ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE.  IT IS
 JV0409'STAMPED BUS 2 NO 4 1971.  IT IS 31.5 FEET NORTHWEST OF THE
 JV0409'NORTHWEST CORNER OF THE HOUSE, 19 FEET SOUTHEAST OF A DRIVE WAY
 JV0409'AND 22 FEET NORTH OF A 24 INCH OAK TREE.
 JV0409'
 JV0409'THE 1958 AZIMUTH MARK IS LOCATED 1/4 MILE SOUTHEAST ALONG STATE
 JV0409'HIGHWAY 152 ON THE NORTHEAST SIDE OF THE ROAD.  IT IS A STANDARD
 JV0409'DISK SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH
 JV0409'PROJECTS 2 INCHES.  IT IS 32 FEET SOUTHEAST OF A LARGE GREEN
 JV0409'ROADWAY SIGN, 18 FEET NORTHEAST OF THE CENTER LINE OF OLD HIGHWAY
 JV0409'152 AND 1.5 FEET NORTHWEST OF A WITNESS POST.
 JV0409'
 JV0409'RM 5 (AZ MK) IS A STANDARD DISK SET IN A DRILL HOLE IN THE
 JV0409'NORTHWEST HEADWALL OF THE LARGE BRIDGE OVER INTERSTATE HIGHWAY 95
 JV0409'AT THE INTERSECTION OF I 95 AND STATE HIGHWAY 152.  THE BRIDGE IS
 JV0409'THE MOST NORTHEAST ONE OF TWO BRIDGES.  IT IS STAMPED BUS 2 1971
 JV0409'NO 5 1973 AND IT PROJECTS 3 FEET ABOVE STATE HIGHWAY 152.  IT IS
 JV0409'18 FEET NORTHEAST OF THE CENTER LINE OF STATE HIGHWAY 152, 5 FEET
 JV0409'SOUTHEAST OF THE NORTHWEST EDGE OF THE BRIDGE AND 1 FOOT
 JV0409'NORTHWEST OF THE MOST NORTHWEST EDGE OF A WOVEN WIRE FENCE WHICH
 JV0409'GUARDS THE WALKWAY ALONG THE BRIDGE.
 JV0409'
 JV0409'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 3-1/4 MILES
 JV0409'NORTHWEST OF EDGEWOOD.
 JV0409
 JV0409                          STATION RECOVERY (1990)
 JV0409
 JV0409'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV0409'RECOVERED IN GOOD CONDITION.
 JV0409
 JV0409                          STATION RECOVERY (1993)
 JV0409
 JV0409'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV0409'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0408 ***********************************************************************
 JV0408  DESIGNATION -  BUS 2 RM 3
 JV0408  PID         -  JV0408
 JV0408  STATE/COUNTY-  MD/HARFORD
 JV0408  COUNTRY     -  US
 JV0408  USGS QUAD   -  EDGEWOOD (2016)
 JV0408
 JV0408                         *CURRENT SURVEY CONTROL
 JV0408  ______________________________________________________________________
 JV0408* NAD 83(1986) POSITION- 39 26 50.88   (N) 076 21 11.35   (W)   HD_HELD1
 JV0408* NAVD 88 ORTHO HEIGHT -    62.89  (meters)      206.3   (feet) RESET
 JV0408  ______________________________________________________________________
 JV0408  GEOID HEIGHT    -        -32.988 (meters)                     GEOID18
 JV0408  VERT ORDER      -  THIRD
 JV0408
 JV0408.The horizontal coordinates were determined by differentially corrected
 JV0408.hand held GPS observations or other comparable positioning techniques
 JV0408.and have an estimated accuracy of +/- 3 meters.
 JV0408
 JV0408.The orthometric height was computed from unverified reset data.
 JV0408
 JV0408.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0408.GEOID18 height accuracy estimate available here.
 JV0408
 JV0408.Click photographs - Photos may exist for this station.
 JV0408
 JV0408;                    North         East    Units  Estimated Accuracy
 JV0408;SPC MD       -   197,879.7     455,678.9     MT  (+/- 3 meters HH1 GPS) 
 JV0408
 JV0408_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8356767308(NAD 83)
 JV0408
 JV0408                          SUPERSEDED SURVEY CONTROL
 JV0408
 JV0408  NGVD 29 (??/??/??)   63.01   (m)          206.7    (f) RESET       3  
 JV0408
 JV0408.Superseded values are not recommended for survey control.
 JV0408
 JV0408.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0408.See file dsdata.pdf to determine how the superseded data were derived.
 JV0408
 JV0408_MARKER: DR = REFERENCE MARK DISK
 JV0408_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0408_STAMPING: BUS 2 NO 3 1971
 JV0408_MARK LOGO: CGS
 JV0408_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0408+STABILITY: SURFACE MOTION
 JV0408
 JV0408  HISTORY     - Date     Condition        Report By
 JV0408  HISTORY     - 1971     MONUMENTED       NGS
 JV0408
 JV0408                          STATION DESCRIPTION
 JV0408
 JV0408'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0408'0.8 MI N FROM JOPPA.
 JV0408'ABOUT 0.75 MILE NORTH ALONG STATE HIGHWAY NO. 152 FROM THE
 JV0408'INTERSECTION OF STATE HIGHWAY 7 AT JOPPA, ON THE TOP OF A HIGH
 JV0408'CUT BANK ON WEST SIDE OF HIGHWAY IN THE LAWN OF MR. BARTON LONG.
 JV0408'LOCATED IN THE BACK YARD SOUTHWEST OF THE SOUTHWEST CORNER OF THE
 JV0408'HOUSE, 9 FEET NORTH-NORTHWEST FROM THE CENTER OF TOP OF A WELL
 JV0408'COVER, 4 FEET NORTHWEST OF A 14-INCH MAPLE TREE, AND 2.6 FEET
 JV0408'SOUTHWEST OF THE SOUTHWEST CORNER OF A WELL AND PUMP HOUSE.  SET
 JV0408'IN TOP OF ROUND CONCRETE POST THAT IS FLUSH WITH GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0407 ***********************************************************************
 JV0407  DESIGNATION -  BUS 2 RM 4
 JV0407  PID         -  JV0407
 JV0407  STATE/COUNTY-  MD/HARFORD
 JV0407  COUNTRY     -  US
 JV0407  USGS QUAD   -  EDGEWOOD (2016)
 JV0407
 JV0407                         *CURRENT SURVEY CONTROL
 JV0407  ______________________________________________________________________
 JV0407* NAD 83(1986) POSITION- 39 26 51.57   (N) 076 21 10.94   (W)   HD_HELD1
 JV0407* NAVD 88 ORTHO HEIGHT -    63.38  (meters)      207.9   (feet) RESET
 JV0407  ______________________________________________________________________
 JV0407  GEOID HEIGHT    -        -32.987 (meters)                     GEOID18
 JV0407  VERT ORDER      -  THIRD
 JV0407
 JV0407.The horizontal coordinates were determined by differentially corrected
 JV0407.hand held GPS observations or other comparable positioning techniques
 JV0407.and have an estimated accuracy of +/- 3 meters.
 JV0407
 JV0407.The orthometric height was computed from unverified reset data.
 JV0407
 JV0407.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0407.GEOID18 height accuracy estimate available here.
 JV0407
 JV0407.Click photographs - Photos may exist for this station.
 JV0407
 JV0407;                    North         East    Units  Estimated Accuracy
 JV0407;SPC MD       -   197,901.0     455,688.6     MT  (+/- 3 meters HH1 GPS) 
 JV0407
 JV0407_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8357767329(NAD 83)
 JV0407
 JV0407                          SUPERSEDED SURVEY CONTROL
 JV0407
 JV0407  NGVD 29 (??/??/??)   63.49   (m)          208.3    (f) RESET       3  
 JV0407
 JV0407.Superseded values are not recommended for survey control.
 JV0407
 JV0407.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0407.See file dsdata.pdf to determine how the superseded data were derived.
 JV0407
 JV0407_MARKER: DR = REFERENCE MARK DISK
 JV0407_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0407_STAMPING: BUS 2 NO 4 1971
 JV0407_MARK LOGO: CGS
 JV0407_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0407+STABILITY: SURFACE MOTION
 JV0407
 JV0407  HISTORY     - Date     Condition        Report By
 JV0407  HISTORY     - 1971     MONUMENTED       NGS
 JV0407
 JV0407                          STATION DESCRIPTION
 JV0407
 JV0407'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0407'0.8 MI N FROM JOPPA.
 JV0407'ABOUT 0.7 MILE NORTH ALONG STATE HIGHWAY NO. 152 FROM THE
 JV0407'INTERSECTION OF STATE HIGHWAY 7 AT JOPPA, ON THE TOP OF A HIGH
 JV0407'CUT BANK ON THE WEST SIDE OF THE HIGHWAY, IN THE LAWN OF MR.
 JV0407'BARTON LONG.  LOCATED AT THE NORTH EDGE OF THE YARD, 72 FEET
 JV0407'WEST OF THE CENTERLINE OF HIGHWAY, 46.4 FEET NORTHEAST OF THE
 JV0407'NORTHWEST CORNER OF THE HOUSE, 30.5 FEET NORTH OF THE NORTHEAST
 JV0407'CORNER OF THE HOUSE, 21 FEET EAST-NORTHEAST OF A 20-INCH OAK
 JV0407'TREE, AND 19.6 FEET SOUTH OF THE CENTERLINE OF A DRIVEWAY.  IT
 JV0407'IS SET IN THE TOP OF A ROUND CONCRETE MONUMENT THAT IS FLUSH WITH
 JV0407'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6355 ***********************************************************************
 JV6355  DESIGNATION -  BUS 2 RM 5
 JV6355  PID         -  JV6355
 JV6355  STATE/COUNTY-  MD/HARFORD
 JV6355  COUNTRY     -  US
 JV6355  USGS QUAD   -  EDGEWOOD (2016)
 JV6355
 JV6355                         *CURRENT SURVEY CONTROL
 JV6355  ______________________________________________________________________
 JV6355* NAD 83(1986) POSITION- 39 26 31.     (N) 076 20 56.     (W)   SCALED
 JV6355* NAVD 88 ORTHO HEIGHT -    45.138 (meters)      148.09  (feet) ADJUSTED
 JV6355  ______________________________________________________________________
 JV6355  GEOID HEIGHT    -        -33.007 (meters)                     GEOID18
 JV6355  DYNAMIC HEIGHT  -         45.115 (meters)      148.01  (feet) COMP
 JV6355  MODELED GRAVITY -    980,102.6   (mgal)                       NAVD 88
 JV6355
 JV6355  VERT ORDER      -  FIRST     CLASS II
 JV6355
 JV6355.The horizontal coordinates were scaled from a map and have
 JV6355.an estimated accuracy of +/- 6 seconds.
 JV6355
 JV6355.The orthometric height was determined by differential leveling and
 JV6355.adjusted by the NATIONAL GEODETIC SURVEY
 JV6355.in June 1991.
 JV6355
 JV6355.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6355.GEOID18 height accuracy estimate available here.
 JV6355
 JV6355.Click photographs - Photos may exist for this station.
 JV6355
 JV6355.The dynamic height is computed by dividing the NAVD 88
 JV6355.geopotential number by the normal gravity value computed on the
 JV6355.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6355.degrees latitude (g = 980.6199 gals.).
 JV6355
 JV6355.The modeled gravity was interpolated from observed gravity values.
 JV6355
 JV6355;                    North         East    Units  Estimated Accuracy
 JV6355;SPC MD       -   197,270.      456,050.      MT  (+/- 180 meters Scaled)
 JV6355
 JV6355_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ839666(NAD 83)
 JV6355
 JV6355                          SUPERSEDED SURVEY CONTROL
 JV6355
 JV6355.No superseded survey control is available for this station.
 JV6355
 JV6355_MARKER: DZ = AZIMUTH MARK DISK
 JV6355_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6355_SP_SET: HEADWALL
 JV6355_STAMPING: BUS 2 1971 NO 5 1973
 JV6355_MARK LOGO: NGS
 JV6355_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6355+STABILITY: SURFACE MOTION
 JV6355_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6355+SATELLITE: SATELLITE OBSERVATIONS - September 04, 1989
 JV6355
 JV6355  HISTORY     - Date     Condition        Report By
 JV6355  HISTORY     - 1973     MONUMENTED       NGS
 JV6355  HISTORY     - 19890904 GOOD             RDA
 JV6355
 JV6355                          STATION DESCRIPTION
 JV6355
 JV6355'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6355'ABOUT 0.35 MILE NORTH ALONG STATE HIGHWAY 152 FROM THE INTERSECTION
 JV6355'OF STATE HIGHWAY 7 AT JOPPER, AT THE INTERSECTION OF INTERSTATE
 JV6355'HIGHWAY 95, IN THE NORTHEAST ONE OF TWO BRIDGES OVER I 95, SET IN TOP
 JV6355'OF THE NORTHWEST BALUSTRADE, 18 FEET NORTHEAST OF THE CENTERLINE OF
 JV6355'THE HIGHWAY, 5 FEET SOUTHEAST OF THE NORTHWEST EDGE OF THE BRIDGE, 1
 JV6355'FOOT NORTHWEST OF THE MOST NORTHWEST EDGE OF A WOVEN WIRE FENCE WHICH
 JV6355'GUARDS THE WALKWAY ALONG THE BRIDGE, AND 3 FEET ABOVE THE HIGHWAY.
 JV6355'ALSO USED AS AZIMUTH MARK FOR STATION BUS 2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0410 ***********************************************************************
 JV0410  DESIGNATION -  BUS AZ MK
 JV0410  PID         -  JV0410
 JV0410  STATE/COUNTY-  MD/HARFORD
 JV0410  COUNTRY     -  US
 JV0410  USGS QUAD   -  EDGEWOOD (2016)
 JV0410
 JV0410                         *CURRENT SURVEY CONTROL
 JV0410  ______________________________________________________________________
 JV0410* NAD 83(1986) POSITION- 39 26 51.     (N) 076 21 09.     (W)   SCALED
 JV0410* NAVD 88 ORTHO HEIGHT -    46.858 (meters)      153.73  (feet) ADJUSTED
 JV0410  ______________________________________________________________________
 JV0410  GEOID HEIGHT    -        -32.989 (meters)                     GEOID18
 JV0410  DYNAMIC HEIGHT  -         46.833 (meters)      153.65  (feet) COMP
 JV0410  MODELED GRAVITY -    980,102.3   (mgal)                       NAVD 88
 JV0410
 JV0410  VERT ORDER      -  FIRST     CLASS II
 JV0410
 JV0410.The horizontal coordinates were scaled from a map and have
 JV0410.an estimated accuracy of +/- 6 seconds.
 JV0410
 JV0410.The orthometric height was determined by differential leveling and
 JV0410.adjusted by the NATIONAL GEODETIC SURVEY
 JV0410.in June 1991.
 JV0410
 JV0410.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0410.GEOID18 height accuracy estimate available here.
 JV0410
 JV0410.Click photographs - Photos may exist for this station.
 JV0410
 JV0410.The dynamic height is computed by dividing the NAVD 88
 JV0410.geopotential number by the normal gravity value computed on the
 JV0410.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0410.degrees latitude (g = 980.6199 gals.).
 JV0410
 JV0410.The modeled gravity was interpolated from observed gravity values.
 JV0410
 JV0410;                    North         East    Units  Estimated Accuracy
 JV0410;SPC MD       -   197,880.      455,740.      MT  (+/- 180 meters Scaled)
 JV0410
 JV0410_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ836673(NAD 83)
 JV0410
 JV0410                          SUPERSEDED SURVEY CONTROL
 JV0410
 JV0410  NGVD 29 (11/26/84)   47.103  (m)          154.54   (f) ADJUSTED    1 2
 JV0410
 JV0410.Superseded values are not recommended for survey control.
 JV0410
 JV0410.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0410.See file dsdata.pdf to determine how the superseded data were derived.
 JV0410
 JV0410_MARKER: DZ = AZIMUTH MARK DISK
 JV0410_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0410_STAMPING: BUS 1958
 JV0410_MARK LOGO: CGS
 JV0410_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0410+STABILITY: SURFACE MOTION
 JV0410
 JV0410  HISTORY     - Date     Condition        Report By
 JV0410  HISTORY     - 1958     MONUMENTED       CGS
 JV0410  HISTORY     - 1959     GOOD             CGS
 JV0410  HISTORY     - 1971     GOOD             NGS
 JV0410
 JV0410                          STATION DESCRIPTION
 JV0410
 JV0410'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0410'0.5 MI N FROM JOPPA.
 JV0410'ABOUT 0.5 MILE NORTH ALONG STATE HIGHWAY 152 FROM THE
 JV0410'INTERSECTION OF STATE HIGHWAY 7 AT JOPPA, 18 FEET EAST OF THE
 JV0410'CENTER LINE OF THE HIGHWAY, 46 FEET SOUTH OF THE CENTER LINE OF
 JV0410'A DRIVEWAY LEADING EAST, 1 FOOT WEST OF A WITNESS POST, SET IN
 JV0410'THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE GROUND
 JV0410'AND ABOUT LEVEL WITH THE HIGHWAY.
 JV0410
 JV0410                          STATION RECOVERY (1971)
 JV0410
 JV0410'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0410'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5801 ***********************************************************************
 HV5801  DESIGNATION -  BUSH
 HV5801  PID         -  HV5801
 HV5801  STATE/COUNTY-  MD/QUEEN ANNES
 HV5801  COUNTRY     -  US
 HV5801  USGS QUAD   -  QUEENSTOWN (2016)
 HV5801
 HV5801                         *CURRENT SURVEY CONTROL
 HV5801  ______________________________________________________________________
 HV5801* NAD 83(1991) POSITION- 38 52 56.71443(N) 076 07 57.52811(W)   ADJUSTED
 HV5801* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5801  ______________________________________________________________________
 HV5801  GEOID HEIGHT    -        -34.291 (meters)                     GEOID18
 HV5801  LAPLACE CORR    -         -4.14  (seconds)                    DEFLEC18
 HV5801  HORZ ORDER      -  THIRD
 HV5801
 HV5801.The horizontal coordinates were established by classical geodetic methods
 HV5801.and adjusted by the National Geodetic Survey in January 1992.
 HV5801
 HV5801.The orthometric height was scaled from a topographic map.
 HV5801
 HV5801.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5801.GEOID18 height accuracy estimate available here.
 HV5801
 HV5801.Click photographs - Photos may exist for this station.
 HV5801
 HV5801.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5801
 HV5801. The following values were computed from the NAD 83(1991) position.
 HV5801
 HV5801;                    North         East     Units Scale Factor Converg.
 HV5801;SPC MD       -   135,311.369   475,254.986   MT  0.99994985   +0 32 39.8
 HV5801;SPC MD       -   443,934.05  1,559,232.40   sFT  0.99994985   +0 32 39.8
 HV5801;UTM  18      - 4,304,338.399   401,758.648   MT  0.99971884   -0 42 39.8
 HV5801
 HV5801!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5801!SPC MD       -   1.00000526  x   0.99994985  =   0.99995511
 HV5801!UTM  18      -   1.00000526  x   0.99971884  =   0.99972410
 HV5801
 HV5801:                Primary Azimuth Mark                     Grid Az
 HV5801:SPC MD       -  WHEEL                                    140 31 16.7
 HV5801:UTM  18      -  WHEEL                                    141 46 36.3
 HV5801
 HV5801_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0175804338(NAD 83)
 HV5801
 HV5801|---------------------------------------------------------------------|
 HV5801| PID    Reference Object                     Distance      Geod. Az  |
 HV5801|                                                           dddmmss.s |
 HV5801| HV5776 NUB                                 267.165 METERS 09606     |
 HV5801| HV5757 WHEEL                               461.017 METERS 1410356.5 |
 HV5801| HV5790 RIGHT                               430.031 METERS 1930047.5 |
 HV5801| HV5797 CHEW                                487.074 METERS 2264232.6 |
 HV5801| HV5782 MORN                                390.577 METERS 26321     |
 HV5801|---------------------------------------------------------------------|
 HV5801
 HV5801                          SUPERSEDED SURVEY CONTROL
 HV5801
 HV5801  NAD 83(1986)-  38 52 56.70975(N)    076 07 57.54103(W) AD(       ) 3
 HV5801  NAD 27      -  38 52 56.26500(N)    076 07 58.72600(W) AD(       ) 3
 HV5801  USSD        -  38 52 56.66000(N)    076 07 58.49300(W) AD(       ) 3
 HV5801
 HV5801.Superseded values are not recommended for survey control.
 HV5801
 HV5801.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5801.See file dsdata.pdf to determine how the superseded data were derived.
 HV5801
 HV5801_MARKER: Z = SEE DESCRIPTION
 HV5801_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5801_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5801+STABILITY: SURFACE MOTION
 HV5801
 HV5801  HISTORY     - Date     Condition        Report By
 HV5801  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5801  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5801
 HV5801                          STATION DESCRIPTION
 HV5801
 HV5801'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5801'STATION IS ON WYE ISLAND, ON THE NORTHERN SHORE OF THE BRANCH OF
 HV5801'WYE RIVER BOUNDING WYE ISLAND ON THE S, ON N SIDE OF ENTRANCE TO
 HV5801'SMALL COVE ABOUT 1/2 MILE E OF ENTRANCE TO GRANARY CREEK, 5/8
 HV5801'MILE NW OF ENTRANCE TO PICKERINGS CREEK.  STATION IS IN CULTIVATED
 HV5801'LAND, ABOUT 7 FEET ABOVE HIGH WATER, 4 YARDS NE OF EDGE OF BANK, 9
 HV5801'YARDS NW OF POINT OF CURVE OF LAND, 22 YARDS W OF TANGENT OF LAND
 HV5801'AT TREE, 30 YARDS WNW OF SCATTERING TREES, AND 50 YARDS NW OF A
 HV5801'POINT.  STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV5801'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV5801'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV5801'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV5801'SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH
 HV5801'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT. DISTANCES AND
 HV5801'BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LARGEST
 HV5801'CEDAR TREE ON POINT OF HIGH BANK, 1/4 MILE. S 12 DEG 47 MIN W.
 HV5801'NAIL IN BLAZE IN 2-INCH LOCUST TREE, 3.81 METERS (12.50 FEET), S
 HV5801'18 DEG 24 MIN W.  TANGENT OF POINT, 1/4 MILE, S 82 DEG 24 MIN W.
 HV5801'NAIL IN BLAZE IN 5-INCH HACKBERRY TREE, 8.65 METERS (28.38 FEET),
 HV5801'N 83 DEG 48 MIN W.  NAIL IN BLAZE IN 10-INCH WALNUT TREE, 20.04
 HV5801'METERS (65.7 FEET), N 84 DEG 31 MIN E.  TANGENT OF POINT.  1/4
 HV5801'MILE, S 37 DEG 27 MIN E.
 HV5801
 HV5801                          STATION RECOVERY (1940)
 HV5801
 HV5801'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5801'STATION MARK SEARCHED FOR BUT NOT FOUND.  REFERENCE TREES NOT
 HV5801'FOUND.  ORIENTATION INDICATES THAT MARK WAS LOCATED IN A FIELD
 HV5801'WHICH HAS BEEN UNDER CULTIVATION AND WAS PROBABLY PLOWED OUT.
 HV5801'
 HV5801'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5074 ***********************************************************************
 JV5074  DESIGNATION -  BUSH
 JV5074  PID         -  JV5074
 JV5074  STATE/COUNTY-  MD/KENT
 JV5074  COUNTRY     -  US
 JV5074  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5074
 JV5074                         *CURRENT SURVEY CONTROL
 JV5074  ______________________________________________________________________
 JV5074* NAD 83(1991) POSITION- 39 03 28.02375(N) 076 12 30.82860(W)   ADJUSTED
 JV5074* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5074  ______________________________________________________________________
 JV5074  GEOID HEIGHT    -        -33.546 (meters)                     GEOID18
 JV5074  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 JV5074  HORZ ORDER      -  SECOND
 JV5074
 JV5074.The horizontal coordinates were established by classical geodetic methods
 JV5074.and adjusted by the National Geodetic Survey in January 1992.
 JV5074
 JV5074.The orthometric height was scaled from a topographic map.
 JV5074
 JV5074.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5074.GEOID18 height accuracy estimate available here.
 JV5074
 JV5074.Click photographs - Photos may exist for this station.
 JV5074
 JV5074.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5074
 JV5074. The following values were computed from the NAD 83(1991) position.
 JV5074
 JV5074;                    North         East     Units Scale Factor Converg.
 JV5074;SPC MD       -   154,717.836   468,499.549   MT  0.99995488   +0 29 48.2
 JV5074;SPC MD       -   507,603.43  1,537,068.94   sFT  0.99995488   +0 29 48.2
 JV5074;UTM  18      - 4,323,883.976   395,431.927   MT  0.99973464   -0 45 41.7
 JV5074
 JV5074!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5074!SPC MD       -   1.00000515  x   0.99995488  =   0.99996002
 JV5074!UTM  18      -   1.00000515  x   0.99973464  =   0.99973978
 JV5074
 JV5074:                Primary Azimuth Mark                     Grid Az
 JV5074:SPC MD       -  ORCHARD PT FARMS WINDMILL                029 37 25.6
 JV5074:UTM  18      -  ORCHARD PT FARMS WINDMILL                030 52 55.5
 JV5074
 JV5074_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9543123883(NAD 83)
 JV5074
 JV5074|---------------------------------------------------------------------|
 JV5074| PID    Reference Object                     Distance      Geod. Az  |
 JV5074|                                                           dddmmss.s |
 JV5074| JV5024 ORCHARD PT FARMS WINDMILL           APPROX. 7.8 KM 0300713.8 |
 JV5074| JV5034 PIONEER PT FARMS W BLACK TK         APPROX. 4.8 KM 0855943.1 |
 JV5074| CB1033 BUSH RM 1                            16.130 METERS 23351     |
 JV5074| CB1034 BUSH RM 2                            20.060 METERS 30700     |
 JV5074|---------------------------------------------------------------------|
 JV5074
 JV5074                          SUPERSEDED SURVEY CONTROL
 JV5074
 JV5074  NAD 83(1986)-  39 03 28.01818(N)    076 12 30.84015(W) AD(       ) 2
 JV5074  NAD 27      -  39 03 27.61900(N)    076 12 32.00700(W) AD(       ) 2
 JV5074
 JV5074.Superseded values are not recommended for survey control.
 JV5074
 JV5074.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5074.See file dsdata.pdf to determine how the superseded data were derived.
 JV5074
 JV5074_MARKER: DS = TRIANGULATION STATION DISK
 JV5074_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5074_STAMPING: BUSH 1938
 JV5074_MARK LOGO: CGS
 JV5074_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5074+STABILITY: SURFACE MOTION
 JV5074
 JV5074  HISTORY     - Date     Condition        Report By
 JV5074  HISTORY     - 1938     MONUMENTED       CGS
 JV5074  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5074
 JV5074                          STATION DESCRIPTION
 JV5074
 JV5074'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5074'STATION IS ON BAYBUSH POINT ON EASTERN NECK ON THE W SHORE OF
 JV5074'THE CHESTER RIVER.  STATION IS JUST IN FROM THE EXTREME END OF
 JV5074'THE POINT (POINT IS ERODING VERY FAST) IN A GROUP OF TALL TREES
 JV5074'AND IS 8.4 METERS NNW OF HIGH-WATER LINE AND 9.7 METERS SSW OF
 JV5074'HIGH-WATER LINE AT POINT.
 JV5074'
 JV5074'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5074'DISKS SET IN CONCRETE.
 JV5074'
 JV5074'REFERENCE MARK NO.1 IS W OF STATION IN TREES AND 11.0 METERS
 JV5074'N OF HIGH-WATER LINE.
 JV5074'
 JV5074'REFERENCE MARK NO.2 IS NW OF STATION IN TREES AND IS 12.5 METERS
 JV5074'WSW OF HIGH-WATER LINE.
 JV5074'
 JV5074'STATION IS REACHED FROM ROCK HALL BY TAKING THE EASTERN NECK
 JV5074'ROAD 3.3 MILES TO SIGN READING NAPLEY GREEN, TURN LEFT ON GRAVEL
 JV5074'ROAD AND GO 0.3 MILE TO WHITE FENCE AND GATE, CONTINUE STRAIGHT
 JV5074'AHEAD FOR 0.5 MILE TO T-INTERSECTION, TURN RIGHT THEN LEFT TO
 JV5074'TRAIL ROAD BORDERING LINE OF HIGH TREES ON RIGHT, GO 0.5 MILE
 JV5074'TO GATE (OVERGROWN WITH BRUSH) CONTINUE AHEAD 0.9 MILE, TURN
 JV5074'SHARP RIGHT AND CONTINUE ON TRAIL ROAD KEEPING LEFT AT ALL SIDE
 JV5074'TRAILS TO HUNTING LODGE 1.4 MILES AT BAYBUSH POINT, CONTINUE
 JV5074'ABOUT 75 YARDS AND TURN E ON VERY DIM TRAIL, THROUGH WOODS
 JV5074'FOR ABOUT 0.1 MILE WHERE IT IS NECESSARY TO LEAVE CAR AND
 JV5074'CONTINUE ON FOOT ABOUT 100 YARDS E TO THE POINT AND STATION.
 JV5074
 JV5074                          STATION RECOVERY (1961)
 JV5074
 JV5074'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5074'STATION MARK AND REFERENCE MARK WERE NOT RECOVERED AFTER A
 JV5074'SEARCH OF THE AREA.  STATION NOW PLOTS IN THE WATER AND HAS
 JV5074'UNDOUBTEDLY BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6723 ***********************************************************************
 JV6723  DESIGNATION -  BUSH
 JV6723  PID         -  JV6723
 JV6723  STATE/COUNTY-  MD/HARFORD
 JV6723  COUNTRY     -  US
 JV6723  USGS QUAD   -  ABERDEEN (2016)
 JV6723
 JV6723                         *CURRENT SURVEY CONTROL
 JV6723  ______________________________________________________________________
 JV6723* NAD 83(2011) POSITION- 39 30 53.11676(N) 076 12 15.14360(W)   ADJUSTED
 JV6723* NAD 83(2011) ELLIP HT-    28.845 (meters)        (06/27/12)   ADJUSTED
 JV6723* NAD 83(2011) EPOCH   -  2010.00
 JV6723* NAVD 88 ORTHO HEIGHT -    61.858 (meters)      202.95  (feet) ADJUSTED
 JV6723  ______________________________________________________________________
 JV6723  GEOID HEIGHT    -        -33.047 (meters)                     GEOID18
 JV6723  NAD 83(2011) X  -  1,174,947.406 (meters)                     COMP
 JV6723  NAD 83(2011) Y  - -4,785,045.503 (meters)                     COMP
 JV6723  NAD 83(2011) Z  -  4,036,585.766 (meters)                     COMP
 JV6723  LAPLACE CORR    -         -2.90  (seconds)                    DEFLEC18
 JV6723  DYNAMIC HEIGHT  -         61.827 (meters)      202.84  (feet) COMP
 JV6723  MODELED GRAVITY -    980,124.8   (mgal)                       NAVD 88
 JV6723
 JV6723  VERT ORDER      -  SECOND    CLASS I
 JV6723
 JV6723  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6723  Standards:
 JV6723         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6723            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6723  -------------------------------------------------------------------
 JV6723  NETWORK    1.16   2.31           0.49   0.45   1.18      0.18726207
 JV6723  -------------------------------------------------------------------
 JV6723  Click here for local accuracies and other accuracy information.
 JV6723
 JV6723.The horizontal coordinates were established by GPS observations
 JV6723.and adjusted by the National Geodetic Survey in June 2012.
 JV6723
 JV6723.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6723.been affixed to the stable North American tectonic plate. See 
 JV6723.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6723
 JV6723.The horizontal coordinates are valid at the epoch date displayed above
 JV6723.which is a decimal equivalence of Year/Month/Day.
 JV6723
 JV6723.The orthometric height was determined by differential leveling and
 JV6723.adjusted by the NATIONAL GEODETIC SURVEY
 JV6723.in June 1995.
 JV6723
 JV6723.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6723.GEOID18 height accuracy estimate available here.
 JV6723
 JV6723.Click photographs - Photos may exist for this station.
 JV6723
 JV6723.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6723
 JV6723.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6723
 JV6723.The ellipsoidal height was determined by GPS observations
 JV6723.and is referenced to NAD 83.
 JV6723
 JV6723.The dynamic height is computed by dividing the NAVD 88
 JV6723.geopotential number by the normal gravity value computed on the
 JV6723.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6723.degrees latitude (g = 980.6199 gals.).
 JV6723
 JV6723.The modeled gravity was interpolated from observed gravity values.
 JV6723
 JV6723. The following values were computed from the NAD 83(2011) position.
 JV6723
 JV6723;                    North         East     Units Scale Factor Converg.
 JV6723;SPC MD       -   205,451.351   468,434.393   MT  1.00001197   +0 29 58.1
 JV6723;SPC MD       -   674,051.64  1,536,855.17   sFT  1.00001197   +0 29 58.1
 JV6723;UTM  18      - 4,374,594.200   396,483.934   MT  0.99973193   -0 45 58.6
 JV6723
 JV6723!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6723!SPC MD       -   0.99999547  x   1.00001197  =   1.00000744
 JV6723!UTM  18      -   0.99999547  x   0.99973193  =   0.99972741
 JV6723
 JV6723_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9648374594(NAD 83)
 JV6723
 JV6723                          SUPERSEDED SURVEY CONTROL
 JV6723
 JV6723  NAD 83(2007)-  39 30 53.11686(N)    076 12 15.14429(W) AD(2002.00) 0
 JV6723  ELLIP H (02/10/07)   28.861  (m)                       GP(2002.00)    
 JV6723  ELLIP H (08/30/02)   28.848  (m)                       GP(       ) 4 2
 JV6723  NAD 83(1991)-  39 30 53.11633(N)    076 12 15.14571(W) AD(       ) 1
 JV6723  ELLIP H (01/27/92)   28.858  (m)                       GP(       ) 4 1
 JV6723  NAD 83(1986)-  39 30 53.11040(N)    076 12 15.15150(W) AD(       ) 1
 JV6723  NGVD 29 (06/18/91)   62.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6723
 JV6723.Superseded values are not recommended for survey control.
 JV6723
 JV6723.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6723.See file dsdata.pdf to determine how the superseded data were derived.
 JV6723
 JV6723_MARKER: DD = SURVEY DISK
 JV6723_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6723_STAMPING: 20 BUSH 1989
 JV6723_MARK LOGO: MD-025
 JV6723_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6723_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6723+STABILITY: SURFACE MOTION
 JV6723_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6723+SATELLITE: SATELLITE OBSERVATIONS - September 05, 2008
 JV6723
 JV6723  HISTORY     - Date     Condition        Report By
 JV6723  HISTORY     - 1989     MONUMENTED       RDA
 JV6723  HISTORY     - 19910711 GOOD             MDSHA
 JV6723  HISTORY     - 19931209 GOOD             GEOMET
 JV6723  HISTORY     - 19970505 GOOD             DMW
 JV6723  HISTORY     - 20010421 GOOD             USPSQD
 JV6723  HISTORY     - 20080905 GOOD             INDIV
 JV6723
 JV6723                          STATION DESCRIPTION
 JV6723
 JV6723'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6723'THE STATION IS LOCATED IN SOUTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6723'1 MILE WEST OF THE VILLAGE OF ABERDEEN.
 JV6723'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 22 AND
 JV6723'U.S. HIGHWAY 40 PROCEED NORTHWEST ALONG HIGHWAY 22 1.5 MILES TO ITS
 JV6723'INTERSECTION WITH BEARDS HILL ROAD.  TURN LEFT AND PROCEED SOUTHWEST
 JV6723'ALONG BEARDS HILL ROAD 0.24 MILES TO ITS INTERSECTION WITH STATE
 JV6723'HIGHWAY 132.  TURN LEFT AND PROCEED SOUTHEAST ALONG HIGHWAY 132 100
 JV6723'FEET TO ITS INTERSECTION WITH BUSH CHAPEL ROAD. TURN RIGHT AND PROCEED
 JV6723'SOUTHWEST BY WEST ALONG BUSH CHAPEL ROAD 1.25 MILES TO THE STATION ON
 JV6723'THE RIGHT.
 JV6723'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6723'ABOUT 1 INCH BELOW GROUND STAMPED 20 BUSH 1989.  THE STATION IS 81.6
 JV6723'FEET NORTHEAST OF C AND P MARYLAND POLE NUMBER 34 1/2, 34.0 FEET
 JV6723'SOUTHEAST OF RIGHT OF WAY SQUARE WIRE FENCE FOR HIGHWAY 95, AND 16.4
 JV6723'FEET NORTHWEST OF THE EDGE OF PAVEMENT OF BUSH CHAPEL ROAD.
 JV6723
 JV6723                          STATION RECOVERY (1991)
 JV6723
 JV6723'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6723'RECOVERED IN GOOD CONDITION.
 JV6723
 JV6723                          STATION RECOVERY (1993)
 JV6723
 JV6723'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6723'RECOVERED IN GOOD CONDITION.
 JV6723
 JV6723                          STATION RECOVERY (1997)
 JV6723
 JV6723'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6723'RECOVERED AS DESCRIBED.
 JV6723
 JV6723                          STATION RECOVERY (2001)
 JV6723
 JV6723'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV6723'RECOVERED IN GOOD CONDITION.
 JV6723
 JV6723                          STATION RECOVERY (2008)
 JV6723
 JV6723'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2008 (WRA)
 JV6723'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4625 ***********************************************************************
 AB4625  DESIGNATION -  BUSHEY AZ MK
 AB4625  PID         -  AB4625
 AB4625  STATE/COUNTY-  MD/CARROLL
 AB4625  COUNTRY     -  US
 AB4625  USGS QUAD   -  WINFIELD (2016)
 AB4625
 AB4625                         *CURRENT SURVEY CONTROL
 AB4625  ______________________________________________________________________
 AB4625* NAD 83(2011) POSITION- 39 26 15.99900(N) 077 01 06.82513(W)   ADJUSTED
 AB4625* NAD 83(2011) ELLIP HT-   219.003 (meters)        (06/27/12)   ADJUSTED
 AB4625* NAD 83(2011) EPOCH   -  2010.00
 AB4625* NAVD 88 ORTHO HEIGHT -   251.0   (meters)      823.    (feet) GPS OBS
 AB4625  ______________________________________________________________________
 AB4625  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4625  GEOID HEIGHT    -        -31.970 (meters)                     GEOID99
 AB4625  GEOID HEIGHT    -        -31.965 (meters)                     GEOID18
 AB4625  NAD 83(2011) X  -  1,108,073.777 (meters)                     COMP
 AB4625  NAD 83(2011) Y  - -4,806,699.067 (meters)                     COMP
 AB4625  NAD 83(2011) Z  -  4,030,109.703 (meters)                     COMP
 AB4625  LAPLACE CORR    -          0.08  (seconds)                    DEFLEC18
 AB4625
 AB4625  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4625  Standards:
 AB4625         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4625            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4625  -------------------------------------------------------------------
 AB4625  NETWORK    1.13   3.39           0.46   0.46   1.73     -0.08268593
 AB4625  -------------------------------------------------------------------
 AB4625  Click here for local accuracies and other accuracy information.
 AB4625
 AB4625.The horizontal coordinates were established by GPS observations
 AB4625.and adjusted by the National Geodetic Survey in June 2012.
 AB4625
 AB4625.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4625.been affixed to the stable North American tectonic plate. See 
 AB4625.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4625
 AB4625.The horizontal coordinates are valid at the epoch date displayed above
 AB4625.which is a decimal equivalence of Year/Month/Day.
 AB4625
 AB4625.The orthometric height was determined by GPS observations and a
 AB4625.high-resolution geoid model.
 AB4625
 AB4625.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4625.GEOID18 height accuracy estimate available here.
 AB4625
 AB4625.Click photographs - Photos may exist for this station.
 AB4625
 AB4625.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4625
 AB4625.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4625
 AB4625.The ellipsoidal height was determined by GPS observations
 AB4625.and is referenced to NAD 83.
 AB4625
 AB4625. The following values were computed from the NAD 83(2011) position.
 AB4625
 AB4625;                    North         East     Units Scale Factor Converg.
 AB4625;SPC MD       -   196,606.831   398,401.954   MT  0.99999788   -0 00 41.9
 AB4625;SPC MD       -   645,034.24  1,307,090.41   sFT  0.99999788   -0 00 41.9
 AB4625;UTM  18      - 4,367,303.363   326,284.325   MT  0.99997156   -1 16 57.3
 AB4625
 AB4625!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4625!SPC MD       -   0.99996564  x   0.99999788  =   0.99996352
 AB4625!UTM  18      -   0.99996564  x   0.99997156  =   0.99993720
 AB4625
 AB4625_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2628467303(NAD 83)
 AB4625
 AB4625|---------------------------------------------------------------------|
 AB4625| PID    Reference Object                     Distance      Geod. Az  |
 AB4625|                                                           dddmmss.s |
 AB4625| AB4686 BUSHEY RESET 1995                   380.201 METERS 13510     |
 AB4625|---------------------------------------------------------------------|
 AB4625
 AB4625                          SUPERSEDED SURVEY CONTROL
 AB4625
 AB4625  NAD 83(2007)-  39 26 15.99923(N)    077 01 06.82590(W) AD(2002.00) 0
 AB4625  ELLIP H (02/10/07)  219.025  (m)                       GP(2002.00)    
 AB4625  ELLIP H (08/30/02)  219.024  (m)                       GP(       ) 4 2
 AB4625  NAD 83(1991)-  39 26 15.99907(N)    077 01 06.82597(W) AD(       ) 1
 AB4625  ELLIP H (07/03/96)  218.916  (m)                       GP(       ) 1 1
 AB4625  NAVD 88 (07/03/96)  251.0    (m)  GEOID93  model used  GPS OBS        
 AB4625
 AB4625.Superseded values are not recommended for survey control.
 AB4625
 AB4625.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4625.See file dsdata.pdf to determine how the superseded data were derived.
 AB4625
 AB4625_MARKER: DD = SURVEY DISK
 AB4625_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4625_STAMPING: BUSHEY AZIMUTH 1995
 AB4625_MARK LOGO: MD-013
 AB4625_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4625_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4625+STABILITY: SURFACE MOTION
 AB4625_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4625+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4625
 AB4625  HISTORY     - Date     Condition        Report By
 AB4625  HISTORY     - 1995     MONUMENTED       MD-013
 AB4625
 AB4625                          STATION DESCRIPTION
 AB4625
 AB4625'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4625'STATION IS LOCATED ABOUT 9 MI (14.5 KM) SOUTH OF WESTMINSTER, ABOUT
 AB4625'8.5 MI (13.7 KM) NORTHEAST OF MOUNT AIRY AND ABOUT 6 MI (9.7 KM)
 AB4625'NORTHWEST OF SYKESVILLE. TO REACH STATION FROM THE INTERSECTION OF MD
 AB4625'ROUTE 97 (OLD WASHINGTON ROAD) AND MD ROUTE 26 (LIBERTY ROAD) GO WEST
 AB4625'ON MD ROUTE 26 FOR 0.55 MI (0.89 KM) TO THE INTERSECTION WITH BUSHEY
 AB4625'ROAD. TURN RIGHT ON BUSHEY ROAD AND GO NORTHWEST FOR 0.15 MI (0.24 KM)
 AB4625'TO THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4625'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND IT IS 16.5 FT
 AB4625'(5.0 M) NORTHEAST OF THE CENTERLINE OF THE ROAD, 122.0 FT (37.2 M)
 AB4625'NORTHWEST OF POWER POLE NO.121316, 97.0 FT (29.6 M) SOUTHEAST OF POWER
 AB4625'POLE NO.121317, 110 FT (33.5 M) NORTH OF TELEPHONE POLE NO.12 AND 107
 AB4625'FT (32.6 M) EAST OF POWER POLE NO.377081.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4686 ***********************************************************************
 AB4686  DESIGNATION -  BUSHEY RESET 1995
 AB4686  PID         -  AB4686
 AB4686  STATE/COUNTY-  MD/CARROLL
 AB4686  COUNTRY     -  US
 AB4686  USGS QUAD   -  WINFIELD (2016)
 AB4686
 AB4686                         *CURRENT SURVEY CONTROL
 AB4686  ______________________________________________________________________
 AB4686* NAD 83(2011) POSITION- 39 26 07.25664(N) 077 00 55.61557(W)   ADJUSTED
 AB4686* NAD 83(2011) ELLIP HT-   208.766 (meters)        (06/27/12)   ADJUSTED
 AB4686* NAD 83(2011) EPOCH   -  2010.00
 AB4686* NAVD 88 ORTHO HEIGHT -   240.7   (meters)      790.    (feet) GPS OBS
 AB4686  ______________________________________________________________________
 AB4686  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4686  GEOID HEIGHT    -        -31.967 (meters)                     GEOID99
 AB4686  GEOID HEIGHT    -        -31.962 (meters)                     GEOID18
 AB4686  NAD 83(2011) X  -  1,108,371.704 (meters)                     COMP
 AB4686  NAD 83(2011) Y  - -4,806,798.028 (meters)                     COMP
 AB4686  NAD 83(2011) Z  -  4,029,894.962 (meters)                     COMP
 AB4686  LAPLACE CORR    -         -0.09  (seconds)                    DEFLEC18
 AB4686
 AB4686  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4686  Standards:
 AB4686         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4686            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4686  -------------------------------------------------------------------
 AB4686  NETWORK    1.25   3.76           0.53   0.49   1.92     -0.05985818
 AB4686  -------------------------------------------------------------------
 AB4686  Click here for local accuracies and other accuracy information.
 AB4686
 AB4686.The horizontal coordinates were established by GPS observations
 AB4686.and adjusted by the National Geodetic Survey in June 2012.
 AB4686
 AB4686.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4686.been affixed to the stable North American tectonic plate. See 
 AB4686.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4686
 AB4686.The horizontal coordinates are valid at the epoch date displayed above
 AB4686.which is a decimal equivalence of Year/Month/Day.
 AB4686
 AB4686.The orthometric height was determined by GPS observations and a
 AB4686.high-resolution geoid model.
 AB4686
 AB4686.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4686.GEOID18 height accuracy estimate available here.
 AB4686
 AB4686.Click photographs - Photos may exist for this station.
 AB4686
 AB4686.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4686
 AB4686.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4686
 AB4686.The ellipsoidal height was determined by GPS observations
 AB4686.and is referenced to NAD 83.
 AB4686
 AB4686. The following values were computed from the NAD 83(2011) position.
 AB4686
 AB4686;                    North         East     Units Scale Factor Converg.
 AB4686;SPC MD       -   196,337.168   398,669.972   MT  0.99999747   -0 00 34.9
 AB4686;SPC MD       -   644,149.53  1,307,969.73   sFT  0.99999747   -0 00 34.9
 AB4686;UTM  18      - 4,367,027.829   326,546.289   MT  0.99997044   -1 16 50.0
 AB4686
 AB4686!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4686!SPC MD       -   0.99996725  x   0.99999747  =   0.99996472
 AB4686!UTM  18      -   0.99996725  x   0.99997044  =   0.99993769
 AB4686
 AB4686_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2654667027(NAD 83)
 AB4686
 AB4686|---------------------------------------------------------------------|
 AB4686| PID    Reference Object                     Distance      Geod. Az  |
 AB4686|                                                           dddmmss.s |
 AB4686| AB4625 BUSHEY AZ MK                        380.201 METERS 31510     |
 AB4686|---------------------------------------------------------------------|
 AB4686
 AB4686                          SUPERSEDED SURVEY CONTROL
 AB4686
 AB4686  NAD 83(2007)-  39 26 07.25686(N)    077 00 55.61634(W) AD(2002.00) 0
 AB4686  ELLIP H (02/10/07)  208.788  (m)                       GP(2002.00)    
 AB4686  ELLIP H (08/30/02)  208.787  (m)                       GP(       ) 4 2
 AB4686  NAD 83(1991)-  39 26 07.25671(N)    077 00 55.61642(W) AD(       ) 1
 AB4686  ELLIP H (07/03/96)  208.679  (m)                       GP(       ) 1 1
 AB4686  NAVD 88 (07/03/96)  240.7    (m)  GEOID93  model used  GPS OBS        
 AB4686
 AB4686.Superseded values are not recommended for survey control.
 AB4686
 AB4686.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4686.See file dsdata.pdf to determine how the superseded data were derived.
 AB4686
 AB4686_MARKER: DD = SURVEY DISK
 AB4686_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4686_STAMPING: BUSHEY RESET 1995
 AB4686_MARK LOGO: MD-013
 AB4686_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4686_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4686+STABILITY: SURFACE MOTION
 AB4686_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4686+SATELLITE: SATELLITE OBSERVATIONS - January 31, 2012
 AB4686
 AB4686  HISTORY     - Date     Condition        Report By
 AB4686  HISTORY     - 1995     MONUMENTED       MD-013
 AB4686  HISTORY     - 20120131 GOOD             JMTMD
 AB4686
 AB4686                          STATION DESCRIPTION
 AB4686
 AB4686'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4686'STATION IS LOCATED ABOUT 10 MI (16.1 KM) SOUTH OF WESTMINSTER, ABOUT
 AB4686'8.5 MI (13.7 KM) NORTHEAST OF MOUNT AIRY AND ABOUT 5.5 MI (8.9 KM)
 AB4686'NORTHWEST OF SYKESVILLE. TO REACH STATION FROM THE INTERSECTION OF MD
 AB4686'ROUTE 26 (LIBERTY ROAD) AND MD ROUTE 97 (OLD WASHINGTON ROAD), GO WEST
 AB4686'ON MD ROUTE 26 FOR 0.7 MI (1.1 KM) TO THE INTERSECTION WITH BUSHEY
 AB4686'ROAD AND THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A
 AB4686'10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. STATION IS
 AB4686'ON THE TOP OF A HIGH BANK BETWEEN MD ROUTE 26 AND OLD WASHINGTON ROAD.
 AB4686'IT IS 56.6 FT (17.3 M) NORTH OF THE CENTERLINE OF MD ROUTE 26, ABOUT
 AB4686'100 FT (30.5 M) EAST OF THE CENTERLINE OF BUSHEY ROAD, 112.6 FT (34.3
 AB4686'M) SOUTHEAST OF A SIGN ALONG THE NORTHEAST SIDE OF BUSHEY ROAD, 114.3
 AB4686'FT (34.8 M) SOUTH OF THE CENTERLINE OF OLD WASHINGTON ROAD, 97.4 FT
 AB4686'(29.7 M) SOUTH OF A ROAD SIGN ALONG THE SOUTH SIDE OF OLD WASHINGTON
 AB4686'ROAD AND 141.0 FT (43.0 M) SOUTHWEST OF TELEPHONE POLE NO.1
 AB4686
 AB4686                          STATION RECOVERY (2012)
 AB4686
 AB4686'RECOVERY NOTE BY JMT ENGINEERING 2012 (JLS)
 AB4686'RTKN (KEYNET) CHECK
 AB4686'N -0.05, E +0.05 Z -0.15
 AB4686'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7064 ***********************************************************************
 HV7064  DESIGNATION -  BUSHWOOD
 HV7064  PID         -  HV7064
 HV7064  STATE/COUNTY-  MD/ST MARYS
 HV7064  COUNTRY     -  US
 HV7064  USGS QUAD   -  ROCK POINT (2016)
 HV7064
 HV7064                         *CURRENT SURVEY CONTROL
 HV7064  ______________________________________________________________________
 HV7064* NAD 83(1993) POSITION- 38 17 49.08952(N) 076 47 33.64960(W)   ADJUSTED
 HV7064* NAVD 88 ORTHO HEIGHT -    38.    (meters)      125.    (feet) SCALED
 HV7064  ______________________________________________________________________
 HV7064  GEOID HEIGHT    -        -33.701 (meters)                     GEOID18
 HV7064  LAPLACE CORR    -         -0.59  (seconds)                    DEFLEC18
 HV7064  HORZ ORDER      -  FIRST
 HV7064
 HV7064.The horizontal coordinates were established by classical geodetic methods
 HV7064.and adjusted by the National Geodetic Survey in November 1994.
 HV7064
 HV7064.The orthometric height was scaled from a topographic map.
 HV7064
 HV7064.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7064.GEOID18 height accuracy estimate available here.
 HV7064
 HV7064.Click photographs - Photos may exist for this station.
 HV7064
 HV7064.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7064
 HV7064. The following values were computed from the NAD 83(1993) position.
 HV7064
 HV7064;                    North         East     Units Scale Factor Converg.
 HV7064;SPC MD       -    69,987.035   418,135.705   MT  1.00000053   +0 07 48.4
 HV7064;SPC MD       -   229,615.80  1,371,833.56   sFT  1.00000053   +0 07 48.4
 HV7064;UTM  18      - 4,240,285.337   343,238.274   MT  0.99990265   -1 06 40.4
 HV7064
 HV7064!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7064!SPC MD       -   0.99999937  x   1.00000053  =   0.99999990
 HV7064!UTM  18      -   0.99999937  x   0.99990265  =   0.99990202
 HV7064
 HV7064:                Primary Azimuth Mark                     Grid Az
 HV7064:SPC MD       -  BUSHWOOD AZ MK                           057 47 26.3
 HV7064:UTM  18      -  BUSHWOOD AZ MK                           059 01 55.1
 HV7064
 HV7064_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4323840285(NAD 83)
 HV7064
 HV7064|---------------------------------------------------------------------|
 HV7064| PID    Reference Object                     Distance      Geod. Az  |
 HV7064|                                                           dddmmss.s |
 HV7064| HV7065 BUSHWOOD SACRED HEART CH SPIRE      APPROX. 0.6 KM 0040221.5 |
 HV7064| CX2152 BUSHWOOD RM 1 AZIMUTH                              0533223.3 |
 HV7064| CX2151 BUSHWOOD AZ MK                                     0575514.7 |
 HV7064| HV6830 LEONARDTOWN WATER TANK              APPROX.13.7 KM 0904643.5 |
 HV7064| HV6832 LEONARDTOWN CATH CH SPIRE           APPROX.13.8 KM 0912008.2 |
 HV7064| CX2153 BUSHWOOD RM 2                        39.239 METERS 10339     |
 HV7064| HV6995 WASHINGTON NORFOLK AWY BCN 9        APPROX. 7.3 KM 1644941.5 |
 HV7064| CX2154 BUSHWOOD RM 3                        35.972 METERS 19846     |
 HV7064|---------------------------------------------------------------------|
 HV7064
 HV7064                          SUPERSEDED SURVEY CONTROL
 HV7064
 HV7064  NAD 83(1991)-  38 17 49.08858(N)    076 47 33.65426(W) AD(       ) 1
 HV7064  NAD 83(1986)-  38 17 49.08945(N)    076 47 33.66535(W) AD(       ) 1
 HV7064  NAD 27      -  38 17 48.62700(N)    076 47 34.78200(W) AD(       ) 1
 HV7064
 HV7064.Superseded values are not recommended for survey control.
 HV7064
 HV7064.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7064.See file dsdata.pdf to determine how the superseded data were derived.
 HV7064
 HV7064_MARKER: DS = TRIANGULATION STATION DISK
 HV7064_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7064_STAMPING: BUSHWOOD 1934
 HV7064_MARK LOGO: CGS
 HV7064_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7064+STABILITY: SURFACE MOTION
 HV7064
 HV7064  HISTORY     - Date     Condition        Report By
 HV7064  HISTORY     - 1934     MONUMENTED       CGS
 HV7064  HISTORY     - 1942     GOOD             CGS
 HV7064  HISTORY     - 1954     GOOD             CGS
 HV7064  HISTORY     - 1958     GOOD             CGS
 HV7064
 HV7064                          STATION DESCRIPTION
 HV7064
 HV7064'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV7064'THIS FIRST-ORDER STATION IS ON THE N BANK OF THE POTOMAC RIVER,
 HV7064'ABOUT 28 MILES BY ROAD SE OF LA PLATA, MARYLAND, 6.3 MILES BY ROAD
 HV7064'S OF CHAPTICO, AND 1/4 MILE N OF THE CLEMENTS-BUSHWOOD ROAD, ON
 HV7064'PROPERTY OWNED BY THE SACRED HEART ROMAN CATHOLIC CHURCH.
 HV7064'
 HV7064'STATION IS ON THE GRASSY LAWN OF A DEMOLISHED BRICK HOUSE, 100
 HV7064'FEET ESE OF THE HOUSE, 26 FEET W OF THE CENTER LINE OF A FARM ROAD
 HV7064'LEADING S, OPPOSITE 3 LOCUST TREES THAT LINE THE E SIDE OF THIS
 HV7064'ROAD, 51 FEET SSW OF THE MOST NORTHERLY OF THE 3 TREES, 51 FEET
 HV7064'NW OF THE MOST SOUTHERLY OF THESE TREES, 143 FEET SW OF A
 HV7064'WINDMILL, 46 FEET S OF RANGE WITH THE CENTER LINE OF A LANE
 HV7064'LEADING E, 56 FEET S OF A LARGE TREE, AND THE MARK PROJECTS ABOUT
 HV7064'6 INCHES ABOVE THE GROUND.
 HV7064'
 HV7064'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE DISKS
 HV7064'SET IN CONCRETE, AS DESCRIBED.
 HV7064'
 HV7064'REFERENCE MARK NO.1 (AZIMUTH MARK) IS 0.15 MILE E OF INTERSECTION
 HV7064'OF THE DIRT AND THE PAVED ROADS, 40 YARDS SW OF THE SW CORNER OF A
 HV7064'SMALL HOUSE, 6 YARDS S OF THE CENTER LINE OF THE PAVED ROAD, 1
 HV7064'YARD S OF A WIRE FENCE, 43 YARDS SSE OF THE S END OF A CONCRETE
 HV7064'CULVERT, BY A TELEPHONE POLE.  THE MARK PROJECTS ABOUT 6 INCHES,
 HV7064'AND IS VISIBLE FROM THE GROUND AT THE STATION.
 HV7064'
 HV7064'REFERENCE MARK NO.2 IS ON THE S SIDE OF A BOARD FENCE, ON THE N
 HV7064'SIDE OF THE LANE LEADING E AND ABOUT MIDWAY BETWEEN THE TWO MIDDLE
 HV7064'TREES OF FOUR THAT LINE THE N SIDE OF THIS LAND.
 HV7064'
 HV7064'REFERENCE MARK NO.3 IS 10 FEET E OF THE CENTER LINE OF THE FARM
 HV7064'ROAD, AT A GATEPOST, 33 FEET ESE OF A LARGE LOCUST TREE, AND 12
 HV7064'FEET WSW OF THE SW CORNER OF A CORN CRIB.
 HV7064'
 HV7064'NO OBJECTS OTHER THAN THOSE LISTED ARE SUITABLE FOR AZIMUTH MARKS.
 HV7064'A 103-FOOT SIGNAL CLEARED ALL LINES.
 HV7064
 HV7064                          STATION RECOVERY (1942)
 HV7064
 HV7064'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV7064'THE STATION AND ALL MARKS RECOVERED AND IN GOOD CONDITION.
 HV7064'FOLLOWING IS A COMPLETE NEW DESCRIPTION--
 HV7064'
 HV7064'THE STATION IS LOCATED ABOUT 1 MILE N OF THE POTOMAC RIVER, ABOUT
 HV7064'6.3 MILES BY ROAD S OF CHAPTICO, 1/4 MILE S OF THE
 HV7064'CLEMENT-BUSHWOOD ROAD AND ABOUT 0.3 MILE SW OF AND ON LAND OWNED
 HV7064'BY THE SACRED HEART ROMAN CATHOLIC CHURCH OF BUSHWOOD.  IT IS ON
 HV7064'THE LAWN OF A LARGE FARMHOUSE, 135 FEET NE OF THE NE CORNER OF THE
 HV7064'HOUSE, 26 FEET W OF THE CENTER OF A FARM ROAD LEADING S, OPPOSITE
 HV7064'3 LOCUST TREES THAT LINE THE E SIDE OF THE ROAD AND 36 FEET N OF
 HV7064'THE PROJECTED PLANE OF THE N WALL OF THE HOUSE.  IT PROJECTS 6
 HV7064'INCHES AND IS STAMPED BUSHWOOD 1934.
 HV7064'
 HV7064'REFERENCE MARK NO.2 IS AT THE S SIDE OF THE S FENCE OF THE BARN
 HV7064'LOT AND ABOUT MIDWAY OF 4 TREES THAT LINE THE FENCE.  IT PROJECTS
 HV7064'ABOUT 6 INCHES AND IS STAMPED BUSHWOOD NO.2 1934.
 HV7064'
 HV7064'REFERENCE MARK NO.3 IS 10 FEET E OF THE CENTER OF THE FARM ROAD,
 HV7064'12 FEET SSW OF A CORN CRIB AND AT A GATEPOST.  IT PROJECTS ABOUT 6
 HV7064'INCHES AND IS STAMPED BUSHWOOD NO.3 1934.
 HV7064'
 HV7064'REFERENCE MARK NO.1 (USED AS THE AZIMUTH MARK) IS LOCATED ABOUT
 HV7064'0.15 MILE E OF THE INTERSECTION OF THE FARM DRIVEWAY AND THE PAVED
 HV7064'ROAD, AT THE FIFTH TELEPHONE POLE E OF THIS INTERSECTION, 120
 HV7064'FEET SW OF, AND ACROSS THE ROAD FROM A RED FRAME HOUSE, AND 26
 HV7064'FEET S OF THE CENTER OF THE PAVED ROAD.  IT PROJECTS ABOUT 4
 HV7064'INCHES AND IS STAMPED BUSHWOOD NO.3 1934.
 HV7064'
 HV7064'TO REACH THE STATION FROM THE CROSSROADS AT CLEMENTS, GO S ON
 HV7064'PAVED ROAD FOR 3.5 MILES (AS PER SIGN) TO MILESTOWN AND A T-ROAD
 HV7064'RIGHT AT SIGN CHAPTICO 8 MILES.  TURN RIGHT AND GO 1.5 MILES TO A
 HV7064'FARM DRIVEWAY LEFT.  THIS POINT IS ABOUT 0.1 MILE E OF THE SACRED
 HV7064'HEART CHURCH.  TURN LEFT AND FOLLOW THE DRIVEWAY ABOUT 1/4 MILE TO
 HV7064'A LARGE YELLOW FARMHOUSE AND THE STATION.
 HV7064'
 HV7064'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT VICTORIA.
 HV7064'
 HV7064'A 77-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT MILLS.
 HV7064'
 HV7064'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT LAUREL.
 HV7064'
 HV7064'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SOMERVILLE.
 HV7064'
 HV7064'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SEARS.
 HV7064
 HV7064                          STATION RECOVERY (1954)
 HV7064
 HV7064'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (DAJ)
 HV7064'STATION WAS RECOVERED AS DESCRIBED, AND ALL MARKS EXCEPT REFERENCE
 HV7064'MARK 1 (AZIMUTH MARK) WERE FOUND TO BE IN GOOD CONDITION.  A NEW
 HV7064'AZIMUTH MARK WAS ESTABLISHED 23 FT. S OF THE APPROXIMATE CENTER OF
 HV7064'A PAVED ROAD, 12 FT. W OF A CEDAR TREE, AND 8 FT. E OF A LARGE GUM
 HV7064'TREE.  THE MARK PROJECTS ABOUT 2 IN., AND THE DISK IS STAMPED
 HV7064'BUSHWOOD 1954.  ALL DISTANCES AND DIRECTIONS CHECKED EXCEPT THE
 HV7064'DIRECTION TO REFERENCE MARK 3.  TWO SEPARATE OBSERVATIONS WERE
 HV7064'TAKEN, AND THE RESULTS MEANED.  TO REACH THE AZIMUTH MARK FROM THE
 HV7064'STATION, GO N ON A DRIVEWAY FOR 0.3 MI. TO A PAVED ROAD.  TURN
 HV7064'RIGHT AND GO E FOR 0.15 MI. TO THE AZIMUTH MARK ON THE RIGHT
 HV7064'BETWEEN TREES AS DESCRIBED.
 HV7064
 HV7064                          STATION RECOVERY (1958)
 HV7064
 HV7064'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV7064'THE STATION AND REFERENCE MARKS 2 AND 3 WERE RECOVERED AS
 HV7064'DESCRIBED.  THE AZIMUTH MARK ESTABLISHED BY D.A.J. IN 1954 WAS
 HV7064'ALSO RECOVERED IN GOOD CONDITION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4315 ***********************************************************************
 JV4315  DESIGNATION -  BUSTAN
 JV4315  PID         -  JV4315
 JV4315  STATE/COUNTY-  MD/MONTGOMERY
 JV4315  COUNTRY     -  US
 JV4315  USGS QUAD   -  KENSINGTON (2016)
 JV4315
 JV4315                         *CURRENT SURVEY CONTROL
 JV4315  ______________________________________________________________________
 JV4315* NAD 83(1993) POSITION- 39 00 06.35574(N) 077 05 01.75957(W)   ADJUSTED
 JV4315* NAVD 88 ORTHO HEIGHT -    96.    (meters)      315.    (feet) SCALED
 JV4315  ______________________________________________________________________
 JV4315  GEOID HEIGHT    -        -31.882 (meters)                     GEOID18
 JV4315  LAPLACE CORR    -         -3.25  (seconds)                    DEFLEC18
 JV4315  HORZ ORDER      -  FIRST
 JV4315
 JV4315.The horizontal coordinates were established by classical geodetic methods
 JV4315.and adjusted by the National Geodetic Survey in November 1994.
 JV4315
 JV4315.The orthometric height was scaled from a topographic map.
 JV4315
 JV4315.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4315.GEOID18 height accuracy estimate available here.
 JV4315
 JV4315.Click photographs - Photos may exist for this station.
 JV4315
 JV4315.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4315
 JV4315. The following values were computed from the NAD 83(1993) position.
 JV4315
 JV4315;                    North         East     Units Scale Factor Converg.
 JV4315;SPC MD       -   148,205.528   392,739.321   MT  0.99995226   -0 03 09.4
 JV4315;SPC MD       -   486,237.64  1,288,512.26   sFT  0.99995226   -0 03 09.4
 JV4315;UTM  18      - 4,319,038.116   319,554.315   MT  1.00000095   -1 18 42.5
 JV4315
 JV4315!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4315!SPC MD       -   0.99998997  x   0.99995226  =   0.99994223
 JV4315!UTM  18      -   0.99998997  x   1.00000095  =   0.99999092
 JV4315
 JV4315:                Primary Azimuth Mark                     Grid Az
 JV4315:SPC MD       -  RENO RESET                               174 35 29.6
 JV4315:UTM  18      -  RENO RESET                               175 51 02.7
 JV4315
 JV4315_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1955419038(NAD 83)
 JV4315
 JV4315|---------------------------------------------------------------------|
 JV4315| PID    Reference Object                     Distance      Geod. Az  |
 JV4315|                                                           dddmmss.s |
 JV4315| CK6733 BUSTAN RM 1                          29.075 METERS 04838     |
 JV4315| HV4384 RENO RESET                          APPROX. 5.5 KM 1743220.2 |
 JV4315| CK6734 BUSTAN RM 2                          34.132 METERS 24047     |
 JV4315|---------------------------------------------------------------------|
 JV4315
 JV4315                          SUPERSEDED SURVEY CONTROL
 JV4315
 JV4315  NAD 83(1991)-  39 00 06.35517(N)    077 05 01.76039(W) AD(       ) 1
 JV4315  NAD 83(1986)-  39 00 06.35492(N)    077 05 01.77030(W) AD(       ) 1
 JV4315  NAD 27      -  39 00 05.96017(N)    077 05 02.84501(W) AD(       ) 1
 JV4315
 JV4315.Superseded values are not recommended for survey control.
 JV4315
 JV4315.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4315.See file dsdata.pdf to determine how the superseded data were derived.
 JV4315
 JV4315_MARKER: DS = TRIANGULATION STATION DISK
 JV4315_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4315_STAMPING: BUSTAN 1956
 JV4315_MARK LOGO: CGS
 JV4315_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4315+STABILITY: SURFACE MOTION
 JV4315
 JV4315  HISTORY     - Date     Condition        Report By
 JV4315  HISTORY     - 1956     MONUMENTED       CGS
 JV4315  HISTORY     - 19950622 MARK NOT FOUND   USPSQD
 JV4315
 JV4315                          STATION DESCRIPTION
 JV4315
 JV4315'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (MLC)
 JV4315'THE STATION IS LOCATED ON THE GROUNDS OF THE NATIONAL NAVAL MEDICAL
 JV4315'CENTER, NEAR HIGH GROUND ALONG THE E FENCE LINE.  THE STATION MARK,
 JV4315'STAMPED BUSTAN 1956, IS A STANDARD DISK, SET IN A CONCRETE POST
 JV4315'THAT PROJECTS ABOUT 2 IN.  IT IS 15 PACES SW OF THE CENTER OF THE
 JV4315'FORK OF A CINDER ROAD AND A TRACK ROAD, AND 45 YD. W OF THE
 JV4315'HIGHEST POINT ALONG THE FENCE ON THE E BORDER OF THE GROUNDS.
 JV4315'
 JV4315'REFERENCE MARK 1, STAMPED BUSTAN NO 1 1956, IS A STANDARD DISK,
 JV4315'SET IN CONCRETE.  IT IS 12 FT. S OF A TRIANGULAR-BLAZED 16-IN.
 JV4315'TREE, 10 FT. E OF THE CENTER OF A CINDER ROAD, AND 50 FT. W OF
 JV4315'THE FENCE.
 JV4315'
 JV4315'REFERENCE MARK 2, STAMPED BUSTAN NO 2 1956, IS A STANDARD DISK,
 JV4315'SET IN CONCRETE.  IT IS 150 FT. S OF A CINDER ROAD, AND 200 FT. W OF
 JV4315'A TRACK ROAD.
 JV4315'
 JV4315'NO AZIMUTH MARK WAS SET.
 JV4315'
 JV4315'TO REACH THE STATION FROM THE NAVAL MEDICAL CENTER FIRE STATION, GO
 JV4315'E ON TAYLOR ROAD FOR 0.45 MI. TO A RIGHT TURN AT THE GREENHOUSES,
 JV4315'TURN RIGHT AND GO 0.15 MI. TO A FORK, TAKE THE LEFT FORK AND GO 0.3
 JV4315'MI. TO THE STATION ON THE LEFT AT FORK AS DESCRIBED ABOVE.
 JV4315
 JV4315                          STATION RECOVERY (1995)
 JV4315
 JV4315'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4315'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5058 ***********************************************************************
 JV5058  DESIGNATION -  BUTLER
 JV5058  PID         -  JV5058
 JV5058  STATE/COUNTY-  MD/QUEEN ANNES
 JV5058  COUNTRY     -  US
 JV5058  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5058
 JV5058                         *CURRENT SURVEY CONTROL
 JV5058  ______________________________________________________________________
 JV5058* NAD 83(1991) POSITION- 39 01 18.97028(N) 076 10 10.90231(W)   ADJUSTED
 JV5058* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5058  ______________________________________________________________________
 JV5058  GEOID HEIGHT    -        -33.699 (meters)                     GEOID18
 JV5058  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 JV5058  HORZ ORDER      -  SECOND
 JV5058
 JV5058.The horizontal coordinates were established by classical geodetic methods
 JV5058.and adjusted by the National Geodetic Survey in January 1992.
 JV5058
 JV5058.The orthometric height was scaled from a topographic map.
 JV5058
 JV5058.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5058.GEOID18 height accuracy estimate available here.
 JV5058
 JV5058.Click photographs - Photos may exist for this station.
 JV5058
 JV5058.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5058
 JV5058. The following values were computed from the NAD 83(1991) position.
 JV5058
 JV5058;                    North         East     Units Scale Factor Converg.
 JV5058;SPC MD       -   150,768.334   471,899.750   MT  0.99995309   +0 31 16.1
 JV5058;SPC MD       -   494,645.78  1,548,224.43   sFT  0.99995309   +0 31 16.1
 JV5058;UTM  18      - 4,319,861.677   398,743.860   MT  0.99972625   -0 44 11.5
 JV5058
 JV5058!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5058!SPC MD       -   1.00000517  x   0.99995309  =   0.99995826
 JV5058!UTM  18      -   1.00000517  x   0.99972625  =   0.99973142
 JV5058
 JV5058:                Primary Azimuth Mark                     Grid Az
 JV5058:SPC MD       -  QUEENSTOWN WATER TANK                    161 43 40.0
 JV5058:UTM  18      -  QUEENSTOWN WATER TANK                    162 59 07.6
 JV5058
 JV5058_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9874319861(NAD 83)
 JV5058
 JV5058|---------------------------------------------------------------------|
 JV5058| PID    Reference Object                     Distance      Geod. Az  |
 JV5058|                                                           dddmmss.s |
 JV5058| CB1036 BUTLER RM 2                          27.400 METERS 12606     |
 JV5058| HV5791 QUEENSTOWN WATER TANK               APPROX. 3.7 KM 1621456.1 |
 JV5058| CB1035 BUTLER RM 1                          26.620 METERS 35624     |
 JV5058|---------------------------------------------------------------------|
 JV5058
 JV5058                          SUPERSEDED SURVEY CONTROL
 JV5058
 JV5058  NAD 83(1986)-  39 01 18.96478(N)    076 10 10.91465(W) AD(       ) 2
 JV5058  NAD 27      -  39 01 18.56300(N)    076 10 12.08600(W) AD(       ) 2
 JV5058
 JV5058.Superseded values are not recommended for survey control.
 JV5058
 JV5058.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5058.See file dsdata.pdf to determine how the superseded data were derived.
 JV5058
 JV5058_MARKER: DS = TRIANGULATION STATION DISK
 JV5058_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5058_STAMPING: BUTLER 1938
 JV5058_MARK LOGO: CGS
 JV5058_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5058+STABILITY: SURFACE MOTION
 JV5058
 JV5058  HISTORY     - Date     Condition        Report By
 JV5058  HISTORY     - 1938     MONUMENTED       CGS
 JV5058  HISTORY     - 1961     GOOD             CGS
 JV5058
 JV5058                          STATION DESCRIPTION
 JV5058
 JV5058'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5058'STATION IS ON THE E SIDE OF THE CHESTER RIVER ABOUT 1/4 MILE S
 JV5058'OF TILGHMAN CREEK IN CULTIVATED FIELD ON PROPERTY OF JEROLD
 JV5058'BUTLER KNOWN AS WAVERLY FARM.  STATION IS ABOUT 10 METERS E OF
 JV5058'5-FOOT RIVER BLUFF AND ABOUT 9 METERS ENE OF SW CORNER OF FIELD
 JV5058'IN PLOUGHED GROUND.  STATION MARK IS SUBMERGED 18 INCHES.
 JV5058'
 JV5058'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5058'DISKS SET IN CONCRETE.
 JV5058'
 JV5058'REFERENCE MARK NO.1 IS ON THE TOP OF RIVER BANK ABOUT 4 METERS
 JV5058'S OF EDGE OF 5-FOOT BLUFF AND ABOUT 32 METERS NE OF SW CORNER OF
 JV5058'FIELD, AND PROJECTS ABOUT 4 INCHES ABOVE GROUND.
 JV5058'
 JV5058'REFERENCE MARK NO.2 IS AT W EDGE OF CULTIVATED FIELD AND ABOUT
 JV5058'2 METERS N OF EDGE OF BLUFF AND TREE LINE RUNNING NE, ABOUT 36
 JV5058'METERS E OF SW CORNER OF FIELD AND RIVER BLUFF.  MARK IS ABOUT
 JV5058'4 INCHES ABOVE GROUND.
 JV5058'
 JV5058'STATION IS REACHED FROM CENTERVILLE, MARYLAND, BY U.S. HIGHWAY
 JV5058'213, 0.7 MILE S TO JUNCTION WITH STATE HIGHWAY 18, TAKE STATE
 JV5058'HIGHWAY 18, GO 3.2 MILES, TURN RIGHT ON GRAVEL ROAD, GO 1.1 MILES
 JV5058'TO FORK, TURN LEFT AND GO 0.6 MILE, TURN RIGHT ONTO PRIVATE DIRT
 JV5058'ROAD, GO 0.7 MILE, PASS FARM BUILDINGS AND ELEVATED WATER TANK
 JV5058'TO CULTIVATED FIELD, TURN RIGHT ALONG EDGE OF FIELD, THENCE
 JV5058'ACROSS FIELD ABOUT 0.4 MILE TO THE SW CORNER AND STATION.
 JV5058
 JV5058                          STATION RECOVERY (1961)
 JV5058
 JV5058'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5058'STATION MARK AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.  THE
 JV5058'PUBLISHED DESCRIPTION IS ADEQUATE WITH THE FOLLOWING
 JV5058'ADDITIONS--REFERENCE MARK NO.1 IS ONE FT. E OF FENCE LINE AND 55
 JV5058'FT. N OF A WILD CHERRY TREE, REFERENCE MARK NO.2 IS ONE FT. N OF
 JV5058'E-W FENCE LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6208 ***********************************************************************
 DN6208  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6208  DESIGNATION -  BUTTONWOOD
 DN6208  PID         -  DN6208
 DN6208  STATE/COUNTY-  MD/CECIL
 DN6208  COUNTRY     -  US
 DN6208  USGS QUAD   -  EARLEVILLE (2016)
 DN6208
 DN6208                         *CURRENT SURVEY CONTROL
 DN6208  ______________________________________________________________________
 DN6208* NAD 83(2011) POSITION- 39 27 21.70245(N) 075 58 11.57806(W)   ADJUSTED
 DN6208* NAD 83(2011) ELLIP HT-   -28.705 (meters)        (06/27/12)   ADJUSTED
 DN6208* NAD 83(2011) EPOCH   -  2010.00
 DN6208* NAVD 88 ORTHO HEIGHT -     4.65  (meters)       15.3   (feet) GPS OBS
 DN6208  ______________________________________________________________________
 DN6208  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6208  GEOID HEIGHT    -        -33.334 (meters)                     GEOID03
 DN6208  GEOID HEIGHT    -        -33.365 (meters)                     GEOID18
 DN6208  NAD 83(2011) X  -  1,195,501.379 (meters)                     COMP
 DN6208  NAD 83(2011) Y  - -4,784,179.506 (meters)                     COMP
 DN6208  NAD 83(2011) Z  -  4,031,517.074 (meters)                     COMP
 DN6208  LAPLACE CORR    -         -0.67  (seconds)                    DEFLEC18
 DN6208
 DN6208  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6208  Standards:
 DN6208         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6208            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6208  -------------------------------------------------------------------
 DN6208  NETWORK    0.63   1.31           0.29   0.21   0.67     -0.07278130
 DN6208  -------------------------------------------------------------------
 DN6208  Click here for local accuracies and other accuracy information.
 DN6208
 DN6208.The horizontal coordinates were established by GPS observations
 DN6208.and adjusted by the National Geodetic Survey in June 2012.
 DN6208
 DN6208.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6208.been affixed to the stable North American tectonic plate. See 
 DN6208.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6208
 DN6208.The horizontal coordinates are valid at the epoch date displayed above
 DN6208.which is a decimal equivalence of Year/Month/Day.
 DN6208
 DN6208.The orthometric height was determined by GPS observations and a
 DN6208.high-resolution geoid model using precise GPS observation and
 DN6208.processing techniques.
 DN6208
 DN6208.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6208.GEOID18 height accuracy estimate available here.
 DN6208
 DN6208.Click photographs - Photos may exist for this station.
 DN6208
 DN6208.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6208
 DN6208.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6208
 DN6208.The ellipsoidal height was determined by GPS observations
 DN6208.and is referenced to NAD 83.
 DN6208
 DN6208. The following values were computed from the NAD 83(2011) position.
 DN6208
 DN6208;                    North         East     Units Scale Factor Converg.
 DN6208;SPC MD       -   199,133.184   488,657.919   MT  1.00000106   +0 38 47.5
 DN6208;SPC MD       -   653,322.79  1,603,205.19   sFT  1.00000106   +0 38 47.5
 DN6208;UTM  18      - 4,367,833.370   416,557.138   MT  0.99968572   -0 36 59.0
 DN6208
 DN6208!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6208!SPC MD       -   1.00000450  x   1.00000106  =   1.00000556
 DN6208!UTM  18      -   1.00000450  x   0.99968572  =   0.99969022
 DN6208
 DN6208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1655767833(NAD 83)
 DN6208
 DN6208                          SUPERSEDED SURVEY CONTROL
 DN6208
 DN6208  NAD 83(2007)-  39 27 21.70260(N)    075 58 11.57878(W) AD(2002.00) 1
 DN6208  ELLIP H (02/23/12)  -28.670  (m)                       GP(2002.00) 4 1
 DN6208
 DN6208.Superseded values are not recommended for survey control.
 DN6208
 DN6208.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6208.See file dsdata.pdf to determine how the superseded data were derived.
 DN6208
 DN6208_MARKER: DD = SURVEY DISK
 DN6208_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6208_STAMPING: BUTTONWOOD 2008
 DN6208_MARK LOGO: MD-015
 DN6208_PROJECTION: FLUSH
 DN6208_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6208_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6208+STABILITY: SURFACE MOTION
 DN6208_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6208+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6208
 DN6208  HISTORY     - Date     Condition        Report By
 DN6208  HISTORY     - 20081204 MONUMENTED       GWS
 DN6208
 DN6208                          STATION DESCRIPTION
 DN6208
 DN6208'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6208'THE STATION IS LOCATED ABOUT 6.50 MI (10.5 KM) NORTHWEST OF CECILTON.
 DN6208'
 DN6208'TO REACH THE STATION FROM THE JUNCTION OF AUGUSTINE HERMAN HIGHWAY
 DN6208'(ROUTE 213) AND CRYSTAL BEACH ROAD (ROUTE 282), PROCEED WEST ON
 DN6208'CRYSTAL BEACH ROAD FOR 6.55 MI (10.5 KM) TO A SIDE ROAD ON THE RIGHT.
 DN6208'TURN RIGHT AND GO WEST ON ELKVIEW SHORES ROAD FOR 0.07 MI (0.1 KM) TO
 DN6208'A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTH ON BUTTONWOOD BEACH
 DN6208'ROAD FOR 0.39 MI (0.6 KM) TO THE FIRST SIDE ROAD ON THE LEFT INSIDE
 DN6208'THE CAMPGROUNDS.  TURN LEFT AND GO WEST FOR 0.18 MI (0.3 KM) TO A SIDE
 DN6208'ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTH ON THE LAST ROAD PARALLEL
 DN6208'TO THE SHORE FOR 0.09 MI (0.1 KM) TO THE STATION ON THE LEFT.
 DN6208'
 DN6208'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6208'CONCRETE MONUMENT, APPROXIMATELY 125 FT (38.1 M) WEST OF THE LAST ROAD
 DN6208'RUNNING PARALLEL TO THE SHORE OF THE ELK RIVER, 64.3 FT (19.6 M) SOUTH
 DN6208'OF A CONCRETE BLOCK STRUCTURE, 138.8 FT (42.3 M) SOUTHWEST OF THE
 DN6208'SOUTHERNMOST OF THREE TRANSFORMERS ON CONCRETE PADS AND 372.4 FT
 DN6208'(113.5 M) NORTHEAST OF A 60+ FT (18.3 M) STEEL ANTENNA WITH A
 DN6208'SATELLITE DISH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3244 ***********************************************************************
 JV3244  DESIGNATION -  BUZ
 JV3244  PID         -  JV3244
 JV3244  STATE/COUNTY-  MD/WASHINGTON
 JV3244  COUNTRY     -  US
 JV3244  USGS QUAD   -  MASON AND DIXON (2019)
 JV3244
 JV3244                         *CURRENT SURVEY CONTROL
 JV3244  ______________________________________________________________________
 JV3244* NAD 83(1986) POSITION- 39 42 09.     (N) 077 45 23.     (W)   SCALED
 JV3244* NAVD 88 ORTHO HEIGHT -   177.192 (meters)      581.34  (feet) ADJUSTED
 JV3244  ______________________________________________________________________
 JV3244  GEOID HEIGHT    -        -34.290 (meters)                     GEOID18
 JV3244  DYNAMIC HEIGHT  -        177.088 (meters)      581.00  (feet) COMP
 JV3244  MODELED GRAVITY -    980,037.6   (mgal)                       NAVD 88
 JV3244
 JV3244  VERT ORDER      -  SECOND    CLASS 0
 JV3244
 JV3244.The horizontal coordinates were scaled from a map and have
 JV3244.an estimated accuracy of +/- 6 seconds.
 JV3244
 JV3244.The orthometric height was determined by differential leveling and
 JV3244.adjusted by the NATIONAL GEODETIC SURVEY
 JV3244.in June 1991.
 JV3244
 JV3244.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3244.GEOID18 height accuracy estimate available here.
 JV3244
 JV3244.Click photographs - Photos may exist for this station.
 JV3244
 JV3244.The dynamic height is computed by dividing the NAVD 88
 JV3244.geopotential number by the normal gravity value computed on the
 JV3244.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3244.degrees latitude (g = 980.6199 gals.).
 JV3244
 JV3244.The modeled gravity was interpolated from observed gravity values.
 JV3244
 JV3244;                    North         East    Units  Estimated Accuracy
 JV3244;SPC MD       -   226,270.      335,130.      MT  (+/- 180 meters Scaled)
 JV3244
 JV3244_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ636983(NAD 83)
 JV3244
 JV3244                          SUPERSEDED SURVEY CONTROL
 JV3244
 JV3244  NGVD 29 (11/26/84)  177.390  (m)          581.99   (f) ADJUSTED    2 0
 JV3244
 JV3244.Superseded values are not recommended for survey control.
 JV3244
 JV3244.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3244.See file dsdata.pdf to determine how the superseded data were derived.
 JV3244
 JV3244_MARKER: DB = BENCH MARK DISK
 JV3244_SETTING: 66 = SET IN ROCK OUTCROP
 JV3244_STAMPING: BUZ 1961
 JV3244_MARK LOGO: CGS
 JV3244_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3244+STABILITY: POSITION/ELEVATION WELL
 JV3244
 JV3244  HISTORY     - Date     Condition        Report By
 JV3244  HISTORY     - 1961     MONUMENTED       CGS
 JV3244  HISTORY     - 20080318 MARK NOT FOUND   GEOCAC
 JV3244
 JV3244                          STATION DESCRIPTION
 JV3244
 JV3244'DESCRIBED BY COAST AND GEODETIC SURVEY 1961
 JV3244'1 MI N FROM MAUGANSVILLE.
 JV3244'ABOUT 1.05 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD AT MAUGANSVILLE
 JV3244'DRILLED IN HORIZONTAL IN A 8 FOOT BY 5 FOOT ROCK OUTCROP, ABOUT
 JV3244'75 YARDS WEST OF AND IN LINE WITH THE NORTH SIDE OF A TWO STORY
 JV3244'BRICK FARM HOME.  39 FEET EAST OF THE EAST RAIL, 27 FEET EAST OF
 JV3244'A WHISTLE POST, 48 FEET SOUTH OF A TELEPHONE POLE, 32 FEET
 JV3244'SOUTHWEST OF THE CENTERLINE OF A BLACKTOP LANE TO FARM, ABOUT 3
 JV3244'FEET BELOW THE TRACK AND 4 FEET BELOW THE BLACKTOP ROAD.
 JV3244
 JV3244                          STATION RECOVERY (2008)
 JV3244
 JV3244'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3244'THIS MARK IS PROBABLY THERE BUT BURIED.  A METAL DETECTOR
 JV3244'SWEEP OF AN AREA IN LINE WITH THE NORTH SIDE OF THE BRICK
 JV3244'FARM HOUSE, 39' EAST OF THE EAST RAIL AND 32' SW OF THE
 JV3244'CENTER OF THE (ONCE) BLACKTOPPED FARM LANE GAVE A POSITIVE
 JV3244'RESPONSE.  THE LOCATION IS 97' SOUTH OF THE ONLY UTILITY POLE.
 JV3244'THERE IS NO WHISTLE POST.  NO DIGGING WAS DONE AS THIS APPEARS
 JV3244'TO BE ON PRIVATE LAND BUT VERY CLOSE TO THE RR RIGHT-OF-WAY.
 JV3244'HOME OWNER COULD NOT BE CONTACTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6839 ***********************************************************************
 HV6839  DESIGNATION -  BUZZ
 HV6839  PID         -  HV6839
 HV6839  STATE/COUNTY-  MD/CALVERT
 HV6839  COUNTRY     -  US
 HV6839  USGS QUAD   -  MECHANICSVILLE (2016)
 HV6839
 HV6839                         *CURRENT SURVEY CONTROL
 HV6839  ______________________________________________________________________
 HV6839* NAD 83(1993) POSITION- 38 29 27.16471(N) 076 39 11.94986(W)   ADJUSTED
 HV6839* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6839  ______________________________________________________________________
 HV6839  GEOID HEIGHT    -        -33.764 (meters)                     GEOID18
 HV6839  LAPLACE CORR    -         -3.75  (seconds)                    DEFLEC18
 HV6839  HORZ ORDER      -  SECOND
 HV6839
 HV6839.The horizontal coordinates were established by classical geodetic methods
 HV6839.and adjusted by the National Geodetic Survey in November 1994.
 HV6839
 HV6839.The orthometric height was scaled from a topographic map.
 HV6839
 HV6839.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6839.GEOID18 height accuracy estimate available here.
 HV6839
 HV6839.Click photographs - Photos may exist for this station.
 HV6839
 HV6839.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6839
 HV6839. The following values were computed from the NAD 83(1993) position.
 HV6839
 HV6839;                    North         East     Units Scale Factor Converg.
 HV6839;SPC MD       -    91,548.308   430,244.809   MT  0.99997228   +0 13 03.3
 HV6839;SPC MD       -   300,354.74  1,411,561.51   sFT  0.99997228   +0 13 03.3
 HV6839;UTM  18      - 4,261,576.344   355,811.330   MT  0.99985603   -1 01 45.1
 HV6839
 HV6839!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6839!SPC MD       -   1.00000534  x   0.99997228  =   0.99997762
 HV6839!UTM  18      -   1.00000534  x   0.99985603  =   0.99986137
 HV6839
 HV6839:                Primary Azimuth Mark                     Grid Az
 HV6839:SPC MD       -  DWARF MSFC 1908                          315 54 38.7
 HV6839:UTM  18      -  DWARF MSFC 1908                          317 09 27.1
 HV6839
 HV6839_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5581161576(NAD 83)
 HV6839
 HV6839|---------------------------------------------------------------------|
 HV6839| PID    Reference Object                     Distance      Geod. Az  |
 HV6839|                                                           dddmmss.s |
 HV6839| CX2155 BUZZ RM                               8.970 METERS 04722     |
 HV6839| HV6846 DWARF MSFC 1908                     APPROX. 1.2 KM 3160742.0 |
 HV6839|---------------------------------------------------------------------|
 HV6839
 HV6839                          SUPERSEDED SURVEY CONTROL
 HV6839
 HV6839  NAD 83(1991)-  38 29 27.16476(N)    076 39 11.95118(W) AD(       ) 2
 HV6839  NAD 83(1986)-  38 29 27.16396(N)    076 39 11.96528(W) AD(       ) 2
 HV6839  NAD 27      -  38 29 26.71800(N)    076 39 13.11600(W) AD(       ) 2
 HV6839  USSD        -  38 29 27.07600(N)    076 39 12.86000(W) AD(       ) 3
 HV6839
 HV6839.Superseded values are not recommended for survey control.
 HV6839
 HV6839.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6839.See file dsdata.pdf to determine how the superseded data were derived.
 HV6839
 HV6839_MARKER: N = NAIL
 HV6839_SETTING: 0 = UNSPECIFIED SETTING
 HV6839
 HV6839  HISTORY     - Date     Condition        Report By
 HV6839  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6839  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV6839  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6839
 HV6839                          STATION DESCRIPTION
 HV6839
 HV6839'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6839'STATION IS ON THE NE SHORE OF PATUXENT RIVER, ON SW SIDE OF
 HV6839'BUZZARDS ISLAND, NEAR MOUTH OF BUZZARDS ISLAND CREEK.  STATION IS
 HV6839'ON MARSH, CLAY AND GRASS LAND ON WOODED ISLAND, ABOUT 2 FEET ABOVE
 HV6839'HIGH WATER, 5 YARDS NE OF RIVER SHORE, AND 40 YARDS NW OF EXTREME
 HV6839'POINT OF ISLAND.  STATION MARK IS NAIL IN STUB WITH TOP FLUSH WITH
 HV6839'GROUND.  REFERENCE MARK IS CENTER OF TOP OF A MARYLAND SHELL FISH
 HV6839'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6839'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV6839'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 8.97 METERS
 HV6839'(29.43 FEET) FROM STATION IN BEARING N 47 DEG 23 MIN E.  DISTANCES
 HV6839'AND BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 HV6839'FOLLOWS--SMOKE PIPE ON ROOF OF STOREHOUSE, 2 MILES, S 13 DEG 48
 HV6839'MIN W.  NEAR CORNER OF NEAR CHIMNEY, 2 MILES, S 15 DEG 13 MIN W.
 HV6839'CHIMNEY OF TRENT HALL, 1-1/4 MILES, S 25 DEG 25 MIN W.  NEAREST OF
 HV6839'THREE CUPOLAS ON STABLE, 1-1/4 MILES, S 29 DEG 14 MIN W.  LEFT PIAZZA
 HV6839'POST AT SOTHORONS 1-1/4 MILES, S 77 DEG 18 MIN W.  CENTER OF ROOF
 HV6839'OF SQUARE HOUSE, 1-3/4 MILES, N 50 DEG 8 MIN W.  NAIL IN BLAZE IN
 HV6839'18-INCH OAK TREE, 4.55 METERS (14.93 FEET), N 33 DEG 9 MIN W.
 HV6839'NAIL IN BLAZE IN 18-INCH OAK TREE, 13.16 METERS (43.2 FEET), N 6
 HV6839'DEG 46 MIN W.  NAIL IN BLAZE IN 24-INCH OAK TREE, 9.62 METERS
 HV6839'(31.56 FEET), N 29 DEG 45 MIN E.  NAIL IN BLAZE IN 5-INCH PINE
 HV6839'TREE, 6.52 METERS (21.39 FEET), N 50 DEG 20 MIN E.  CHIMNEY ON
 HV6839'HOUSE ACROSS CREEK 1/4 MILE, S 72 DEG 0 MIN E.
 HV6839
 HV6839                          STATION RECOVERY (1930)
 HV6839
 HV6839'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6839'STATION APPARENTLY WASHED AWAY.
 HV6839
 HV6839                          STATION RECOVERY (1943)
 HV6839
 HV6839'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6839'A THOROUGH SEARCH WAS MADE BUT NO TRACE OF THIS STATION WAS FOUND.
 HV6839'IT IS THOUGHT THAT IT WAS WASHED OUT MANY YEARS AGO.
 HV6839'
 HV6839'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6943 ***********************************************************************
 JV6943  DESIGNATION -  BUZZ
 JV6943  PID         -  JV6943
 JV6943  STATE/COUNTY-  MD/HARFORD
 JV6943  COUNTRY     -  US
 JV6943  USGS QUAD   -  EDGEWOOD (2016)
 JV6943
 JV6943                         *CURRENT SURVEY CONTROL
 JV6943  ______________________________________________________________________
 JV6943* NAD 83(2011) POSITION- 39 27 26.49966(N) 076 18 36.37969(W)   ADJUSTED
 JV6943* NAD 83(2011) ELLIP HT-     6.293 (meters)        (06/27/12)   ADJUSTED
 JV6943* NAD 83(2011) EPOCH   -  2010.00
 JV6943* NAVD 88 ORTHO HEIGHT -    39.331 (meters)      129.04  (feet) ADJUSTED
 JV6943  ______________________________________________________________________
 JV6943  GEOID HEIGHT    -        -33.047 (meters)                     GEOID18
 JV6943  NAD 83(2011) X  -  1,167,056.127 (meters)                     COMP
 JV6943  NAD 83(2011) Y  - -4,791,128.920 (meters)                     COMP
 JV6943  NAD 83(2011) Z  -  4,031,653.545 (meters)                     COMP
 JV6943  LAPLACE CORR    -         -3.00  (seconds)                    DEFLEC18
 JV6943  DYNAMIC HEIGHT  -         39.311 (meters)      128.97  (feet) COMP
 JV6943  MODELED GRAVITY -    980,107.4   (mgal)                       NAVD 88
 JV6943
 JV6943  VERT ORDER      -  SECOND    CLASS I
 JV6943
 JV6943  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6943  Standards:
 JV6943         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6943            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6943  -------------------------------------------------------------------
 JV6943  NETWORK    1.57   2.16           0.73   0.51   1.10     -0.13569408
 JV6943  -------------------------------------------------------------------
 JV6943  Click here for local accuracies and other accuracy information.
 JV6943
 JV6943.The horizontal coordinates were established by GPS observations
 JV6943.and adjusted by the National Geodetic Survey in June 2012.
 JV6943
 JV6943.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6943.been affixed to the stable North American tectonic plate. See 
 JV6943.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6943
 JV6943.The horizontal coordinates are valid at the epoch date displayed above
 JV6943.which is a decimal equivalence of Year/Month/Day.
 JV6943
 JV6943.The orthometric height was determined by differential leveling and
 JV6943.adjusted by the NATIONAL GEODETIC SURVEY
 JV6943.in June 1995.
 JV6943
 JV6943.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6943.GEOID18 height accuracy estimate available here.
 JV6943
 JV6943.Click photographs - Photos may exist for this station.
 JV6943
 JV6943.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6943
 JV6943.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6943
 JV6943.The ellipsoidal height was determined by GPS observations
 JV6943.and is referenced to NAD 83.
 JV6943
 JV6943.The dynamic height is computed by dividing the NAVD 88
 JV6943.geopotential number by the normal gravity value computed on the
 JV6943.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6943.degrees latitude (g = 980.6199 gals.).
 JV6943
 JV6943.The modeled gravity was interpolated from observed gravity values.
 JV6943
 JV6943. The following values were computed from the NAD 83(2011) position.
 JV6943
 JV6943;                    North         East     Units Scale Factor Converg.
 JV6943;SPC MD       -   199,005.271   459,375.940   MT  1.00000130   +0 25 58.8
 JV6943;SPC MD       -   652,903.13  1,507,135.90   sFT  1.00000130   +0 25 58.8
 JV6943;UTM  18      - 4,368,351.426   387,287.719   MT  0.99975641   -0 49 57.6
 JV6943
 JV6943!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6943!SPC MD       -   0.99999901  x   1.00000130  =   1.00000031
 JV6943!UTM  18      -   0.99999901  x   0.99975641  =   0.99975542
 JV6943
 JV6943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8728768351(NAD 83)
 JV6943
 JV6943                          SUPERSEDED SURVEY CONTROL
 JV6943
 JV6943  NAD 83(2007)-  39 27 26.49983(N)    076 18 36.38047(W) AD(2002.00) 0
 JV6943  ELLIP H (02/10/07)    6.312  (m)                       GP(2002.00)    
 JV6943  ELLIP H (08/30/02)    6.312  (m)                       GP(       ) 4 2
 JV6943  NAD 83(1991)-  39 27 26.49974(N)    076 18 36.38033(W) AD(       ) 1
 JV6943  ELLIP H (09/15/92)    6.294  (m)                       GP(       ) 4 1
 JV6943  NGVD 29 (09/15/92)   39.7    (m)  GEOID90  model used  GPS OBS        
 JV6943
 JV6943.Superseded values are not recommended for survey control.
 JV6943
 JV6943.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6943.See file dsdata.pdf to determine how the superseded data were derived.
 JV6943
 JV6943_MARKER: DD = SURVEY DISK
 JV6943_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6943_STAMPING: BUZZ 1991
 JV6943_MARK LOGO: MDSHA
 JV6943_PROJECTION: FLUSH
 JV6943_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6943_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6943+STABILITY: SURFACE MOTION
 JV6943_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6943+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2017
 JV6943
 JV6943  HISTORY     - Date     Condition        Report By
 JV6943  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6943  HISTORY     - 20060705 GOOD             GPSSS
 JV6943  HISTORY     - 20150204 GOOD             BASE9
 JV6943  HISTORY     - 20170303 GOOD             JMTMD
 JV6943
 JV6943                          STATION DESCRIPTION
 JV6943
 JV6943'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6943'THE MARKER IS LOCATED ABOUT 20.1 MI (32.3 KM) NORTHEAST OF BALTIMORE,
 JV6943'5.5 MI (8.9 KM) SOUTHEAST OF BEL AIR AND ALONG MARYLAND HIGHWAY 24.
 JV6943'IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARKER FROM THE
 JV6943'INTERSECTION OF STATE HIGHWAY 7 AND STATE HIGHWAY 24 INTERSECT, GO
 JV6943'WEST ON STATE HIGHWAY 24 FOR 0.8 MI (1.3 KM) ACROSS INTERSTATE
 JV6943'HIGHWAY 95 TO THE MARKER ON THE RIGHT, A MARYLAND STATE HIGHWAY
 JV6943'ADMINISTRATION SURVEY DISK IN THE TOP OF A 0.8 FT (0.2 M) ROUND
 JV6943'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT
 JV6943'IS 21.0 FT (6.4 M) NORTHEAST OF THE NORTHWEST CORNER OF THE BRIDGE
 JV6943'OVER INTERSTATE HIGHWAY 95, 7.5 FT (2.3 M) NORTHWEST OF AN OVER HEAD
 JV6943'LIGHT POLE AND 5.5 FT (1.7 M) NORTH-NORTHEAST OF THE NORTHEAST EDGE
 JV6943'OF THE MOST NORTHEAST PAVED SHOULDER OF MARYLAND HIGHWAY 24.
 JV6943
 JV6943                          STATION RECOVERY (2006)
 JV6943
 JV6943'RECOVERY NOTE BY GPS SALES AND SERVICES 2006
 JV6943'RECOVERED BY TED OF SURVEY SERVICES, LLC
 JV6943
 JV6943                          STATION RECOVERY (2015)
 JV6943
 JV6943'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2015 (DRD)
 JV6943'THE MARK IS 0.99 M (3.2 FT) SOUTH-SOUTHWEST OF AN ORANGE CARSONITE
 JV6943'WITNESS POST AND 1.91 M (6.3 FT) WEST OF THE SOUTHWEST CORNER OF THE
 JV6943'METAL SUPPORT FOR AN OVERHEAD STREET LIGHT.
 JV6943
 JV6943                          STATION RECOVERY (2017)
 JV6943
 JV6943'RECOVERY NOTE BY JMT ENGINEERING 2017 (EAS)
 JV6943'CHECK WITH RTN N-0.02 E-0.11 Z-0.05
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6955 ***********************************************************************
 JV6955  DESIGNATION -  BUZZ RM 2
 JV6955  PID         -  JV6955
 JV6955  STATE/COUNTY-  MD/HARFORD
 JV6955  COUNTRY     -  US
 JV6955  USGS QUAD   -  EDGEWOOD (2016)
 JV6955
 JV6955                         *CURRENT SURVEY CONTROL
 JV6955  ______________________________________________________________________
 JV6955* NAD 83(1986) POSITION- 39 27 26.     (N) 076 18 36.     (W)   SCALED
 JV6955* NAVD 88 ORTHO HEIGHT -    39.598 (meters)      129.91  (feet) ADJUSTED
 JV6955  ______________________________________________________________________
 JV6955  GEOID HEIGHT    -        -33.048 (meters)                     GEOID18
 JV6955  DYNAMIC HEIGHT  -         39.578 (meters)      129.85  (feet) COMP
 JV6955  MODELED GRAVITY -    980,107.4   (mgal)                       NAVD 88
 JV6955
 JV6955  VERT ORDER      -  SECOND    CLASS I
 JV6955
 JV6955.The horizontal coordinates were scaled from a map and have
 JV6955.an estimated accuracy of +/- 6 seconds.
 JV6955
 JV6955.The orthometric height was determined by differential leveling and
 JV6955.adjusted by the NATIONAL GEODETIC SURVEY
 JV6955.in June 1995.
 JV6955
 JV6955.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6955.GEOID18 height accuracy estimate available here.
 JV6955
 JV6955.Click photographs - Photos may exist for this station.
 JV6955
 JV6955.The dynamic height is computed by dividing the NAVD 88
 JV6955.geopotential number by the normal gravity value computed on the
 JV6955.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6955.degrees latitude (g = 980.6199 gals.).
 JV6955
 JV6955.The modeled gravity was interpolated from observed gravity values.
 JV6955
 JV6955;                    North         East    Units  Estimated Accuracy
 JV6955;SPC MD       -   198,990.      459,390.      MT  (+/- 180 meters Scaled)
 JV6955
 JV6955_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ872683(NAD 83)
 JV6955
 JV6955                          SUPERSEDED SURVEY CONTROL
 JV6955
 JV6955.No superseded survey control is available for this station.
 JV6955
 JV6955_MARKER: DD = SURVEY DISK
 JV6955_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6955_STAMPING: BUZZ RM 2 1991
 JV6955_MARK LOGO: MDSHA
 JV6955_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6955_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6955+STABILITY: SURFACE MOTION
 JV6955_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6955+SATELLITE: SATELLITE OBSERVATIONS - 1991
 JV6955
 JV6955  HISTORY     - Date     Condition        Report By
 JV6955  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6955
 JV6955                          STATION DESCRIPTION
 JV6955
 JV6955'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6955'THE MARKER IS LOCATED ABOUT 20.0 MI (32.2 KM) NORTHEAST OF BALTIMORE,
 JV6955'5.5 MI (8.9 KM) SOUTHEAST OF BEL AIR AND IN THE MEDIAN OF MARYLAND
 JV6955'HIGHWAY 24.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARKER FROM
 JV6955'THE INTERSECTION OF STATE HIGHWAY 7 AND STATE HIGHWAY 24, GO WEST ON
 JV6955'STATE HIGHWAY 24 FOR 0.8 MI (1.3 KM) , ACROSS INTERSTATE HIGHWAY 95,
 JV6955'TO THE MARKER ON THE LEFT.  THE POINT IS MARKED WITH A MARYLAND STATE
 JV6955'HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M)
 JV6955'ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE
 JV6955'GROUND.  IT IS 9.1 FT (2.8 M) NORTHWEST OF THE WEST WALL OF THE
 JV6955'BRIDGE FOR WHERE THE NORTHBOUND LANE OF STATE HIGHWAY 24 CROSSES OVER
 JV6955'INTERSTATE HIGHWAY 95 AND 14.7 FT (4.5 M) NORTHEAST OF THE EAST WALL
 JV6955'OF THE BRIDGE FOR WHERE THE SOUTHBOUND LANE OF STATE HIGHWAY 24
 JV6955'CROSSES OVER INTERSTATE HIGHWAY 95.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6825 ***********************************************************************
 HV6825  DESIGNATION -  BUZZARD MSFC 1908
 HV6825  PID         -  HV6825
 HV6825  STATE/COUNTY-  MD/ST MARYS
 HV6825  COUNTRY     -  US
 HV6825  USGS QUAD   -  LEONARDTOWN (2016)
 HV6825
 HV6825                         *CURRENT SURVEY CONTROL
 HV6825  ______________________________________________________________________
 HV6825* NAD 83(1993) POSITION- 38 16 46.66625(N) 076 37 55.44573(W)   ADJUSTED
 HV6825* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6825  ______________________________________________________________________
 HV6825  GEOID HEIGHT    -        -33.911 (meters)                     GEOID18
 HV6825  LAPLACE CORR    -         -5.19  (seconds)                    DEFLEC18
 HV6825  HORZ ORDER      -  THIRD
 HV6825
 HV6825.The horizontal coordinates were established by classical geodetic methods
 HV6825.and adjusted by the National Geodetic Survey in November 1994.
 HV6825
 HV6825.The orthometric height was scaled from a topographic map.
 HV6825
 HV6825.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6825.GEOID18 height accuracy estimate available here.
 HV6825
 HV6825.Click photographs - Photos may exist for this station.
 HV6825
 HV6825.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6825
 HV6825. The following values were computed from the NAD 83(1993) position.
 HV6825
 HV6825;                    North         East     Units Scale Factor Converg.
 HV6825;SPC MD       -    68,106.563   432,193.284   MT  1.00000361   +0 13 51.3
 HV6825;SPC MD       -   223,446.28  1,417,954.13   sFT  1.00000361   +0 13 51.3
 HV6825;SPC VA N     - 2,069,700.148 3,663,423.218   MT  0.99996567   +1 09 56.9
 HV6825;SPC VA N     - 6,790,341.24 12,019,081.01   sFT  0.99996567   +1 09 56.9
 HV6825;UTM  18      - 4,238,100.941   357,250.040   MT  0.99985096   -1 00 40.5
 HV6825
 HV6825!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6825!SPC MD       -   1.00000537  x   1.00000361  =   1.00000898
 HV6825!SPC VA N     -   1.00000537  x   0.99996567  =   0.99997104
 HV6825!UTM  18      -   1.00000537  x   0.99985096  =   0.99985633
 HV6825
 HV6825:                Primary Azimuth Mark                     Grid Az
 HV6825:SPC MD       -  FOXWELL MSFC 1908                        018 13 40.1
 HV6825:SPC VA N     -  FOXWELL MSFC 1908                        017 17 34.5
 HV6825:UTM  18      -  FOXWELL MSFC 1908                        019 28 11.9
 HV6825
 HV6825_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5725038100(NAD 83)
 HV6825
 HV6825|---------------------------------------------------------------------|
 HV6825| PID    Reference Object                     Distance      Geod. Az  |
 HV6825|                                                           dddmmss.s |
 HV6825| HV6823 FOXWELL MSFC 1908                   483.580 METERS 0182731.4 |
 HV6825| HV6824 CORN MSFC 1908                      477.527 METERS 1383733.1 |
 HV6825|---------------------------------------------------------------------|
 HV6825
 HV6825                          SUPERSEDED SURVEY CONTROL
 HV6825
 HV6825  NAD 83(1991)-  38 16 46.66544(N)    076 37 55.45055(W) AD(       ) 3
 HV6825  NAD 83(1986)-  38 16 46.66618(N)    076 37 55.46227(W) AD(       ) 3
 HV6825  NAD 27      -  38 16 46.19000(N)    076 37 56.58100(W) AD(       ) 3
 HV6825  USSD        -  38 16 46.80700(N)    076 37 56.44900(W) AD(       ) 3
 HV6825
 HV6825.Superseded values are not recommended for survey control.
 HV6825
 HV6825.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6825.See file dsdata.pdf to determine how the superseded data were derived.
 HV6825
 HV6825_MARKER: H = DRILL HOLE
 HV6825_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6825_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6825+STABILITY: SURFACE MOTION
 HV6825
 HV6825  HISTORY     - Date     Condition        Report By
 HV6825  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6825  HISTORY     - 1942     GOOD             CGS
 HV6825  HISTORY     - 1958     SEE DESCRIPTION  CGS
 HV6825
 HV6825                          STATION DESCRIPTION
 HV6825
 HV6825'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6825'STATION IS ON THE WESTERN SHORE OF UPPER BRETONS BAY, ON A
 HV6825'PROMINENT POINT IN BEND OF BAY, ABOUT 1/2 MILE SE OF LEONARDTOWN
 HV6825'WHARF, AND 1 MILE N OF ENTRANCE TO MOULDY CREEK, ABOUT 1 FOOT
 HV6825'ABOVE HIGH WATER, 7 YARDS NW OF SHORE, 10 YARDS SE OF SHORE, 80
 HV6825'YARDS WNW OF A POINT, AND 10 YARDS E OF FOOT OF SLOPE.
 HV6825'
 HV6825'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6825'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6825'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6825'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6825'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6825'AS FOLLOWS--S GABLE OF WHARF HOUSE, 5/8 MILE, N 38 DEG 34 MIN W.
 HV6825'CUPOLA ON CATHOLIC ACADEMY, 1 MILE, N 1 DEG 1 MIN E.  W CHIMNEY OF
 HV6825'FOXWELL HOUSE, 1/4 MILE, N 13 DEG 54 MIN E.  S CHIMNEY OF 2-STORY
 HV6825'HOUSE, 1/2 MILE, N 23 DEG 46 MIN E.  W CHIMNEY OF 2-STORY HOUSE,
 HV6825'3/4 MILE, N 51 DEG 30 MIN E.  SW CHIMNEY OF 1-STORY HOUSE, 1/2
 HV6825'MILE, S 48 DEG 40 MIN E.
 HV6825
 HV6825                          STATION RECOVERY (1942)
 HV6825
 HV6825'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV6825'STATION RECOVERED IN FAIR CONDITION.  NOW ON PROPERTY OWNED BY
 HV6825'BERNARD DUKE.
 HV6825'
 HV6825'REACHED FROM THE SQUARE IN LEONARDSTOWN BY GOING N AND W ON ROUTE
 HV6825'5 FOR 1.7 MILES, TURN LEFT (COMPTON ROAD), GO 1.5 MILES, TAKE LEFT
 HV6825'FORK GRAVEL ROAD, GO 1 MILE, TAKE LEFT FORK AGAIN AND GO 1 MILE,
 HV6825'KEEP STRAIGHT AHEAD, GO 0.45 MILE, TURN LEFT, GO 0.3 MILE, TURN
 HV6825'RIGHT THROUGH GATE AT BARNYARD, CONTINUE THROUGH BARNYARD FOR 0.1
 HV6825'MILE TO GATE AT HOUSE, CONTINUE THROUGH GATE AND ON FARM ROAD FOR
 HV6825'0.2 MILE OR AS FAR AS POSSIBLE TO END OF FIELD AT TOP OF SMALL
 HV6825'BLUFF.  STATION IS AT FOOT OF BLUFF ABOUT 200 FEET DISTANT,
 HV6825'PATHWAY LEADS DOWN BLUFF TO STATION.
 HV6825
 HV6825                          STATION RECOVERY (1958)
 HV6825
 HV6825'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6825'THE STATION IS DESTROYED.  THE MONUMENT WAS FOUND LYING ON THE BEACH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5814 ***********************************************************************
 JV5814  DESIGNATION -  BWI AIRPORT BCN FRIENDSHIP INTL AP
 JV5814  PID         -  JV5814
 JV5814  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5814  COUNTRY     -  US
 JV5814  USGS QUAD   -  RELAY (2016)
 JV5814
 JV5814                         *CURRENT SURVEY CONTROL
 JV5814  ______________________________________________________________________
 JV5814* NAD 83(1991) POSITION- 39 10 45.00398(N) 076 40 06.12999(W)   ADJUSTED
 JV5814* NAVD 88 ORTHO HEIGHT -    44.    (meters)      144.    (feet) SCALED
 JV5814  ______________________________________________________________________
 JV5814  GEOID HEIGHT    -        -32.698 (meters)                     GEOID18
 JV5814  LAPLACE CORR    -         -5.44  (seconds)                    DEFLEC18
 JV5814  HORZ ORDER      -  THIRD
 JV5814
 JV5814.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV5814
 JV5814.The horizontal coordinates were established by classical geodetic methods
 JV5814.and adjusted by the National Geodetic Survey in January 1992.
 JV5814
 JV5814.The orthometric height was scaled from a topographic map.
 JV5814
 JV5814.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5814.GEOID18 height accuracy estimate available here.
 JV5814
 JV5814.Click photographs - Photos may exist for this station.
 JV5814
 JV5814.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5814
 JV5814. The following values were computed from the NAD 83(1991) position.
 JV5814
 JV5814;                    North         East     Units Scale Factor Converg.
 JV5814;SPC MD       -   167,948.107   428,654.271   MT  0.99996383   +0 12 29.3
 JV5814;SPC MD       -   551,009.75  1,406,343.22   sFT  0.99996383   +0 12 29.3
 JV5814;UTM  18      - 4,337,984.994   355,893.860   MT  0.99985570   -1 03 15.0
 JV5814
 JV5814!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5814!SPC MD       -   0.99999826  x   0.99996383  =   0.99996209
 JV5814!UTM  18      -   0.99999826  x   0.99985570  =   0.99985396
 JV5814
 JV5814_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5589337984(NAD 83)
 JV5814
 JV5814                          SUPERSEDED SURVEY CONTROL
 JV5814
 JV5814  NAD 83(1986)-  39 10 45.00120(N)    076 40 06.13960(W) AD(       ) 3
 JV5814  NAD 27      -  39 10 44.62100(N)    076 40 07.24400(W) AD(       ) 3
 JV5814
 JV5814.Superseded values are not recommended for survey control.
 JV5814
 JV5814.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5814.See file dsdata.pdf to determine how the superseded data were derived.
 JV5814
 JV5814_MARKER: 21 = AIRPORT BEACON
 JV5814_MARK LOGO: CGS
 JV5814
 JV5814  HISTORY     - Date     Condition        Report By
 JV5814  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5814
 JV5814                          STATION DESCRIPTION
 JV5814
 JV5814'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5814'THE STATION IS LOCATED ABOUT 8-1/2 MILES SOUTHWEST OF THE CENTER
 JV5814'OF BALTIMORE, ABOUT 2-1/2 MILES NORTHWEST OF GLEN BURNIE AND IS
 JV5814'ON TOP OF THE MAIN TERMINAL BUILDING AND CONTROL TOWER.  IT IS
 JV5814'110 FEET HIGH AND THE POINT INTERSECTED WAS THE GREEN AND WHITE
 JV5814'REVOLVING BEACON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5823 ***********************************************************************
 JV5823  DESIGNATION -  BWI AP STA A
 JV5823  PID         -  JV5823
 JV5823  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5823  COUNTRY     -  US
 JV5823  USGS QUAD   -  RELAY (2016)
 JV5823
 JV5823                         *CURRENT SURVEY CONTROL
 JV5823  ______________________________________________________________________
 JV5823* NAD 83(1991) POSITION- 39 10 20.56008(N) 076 39 16.05890(W)   ADJUSTED
 JV5823* NAVD 88 ORTHO HEIGHT -    38.    (meters)      125.    (feet) SCALED
 JV5823  ______________________________________________________________________
 JV5823  GEOID HEIGHT    -        -32.743 (meters)                     GEOID18
 JV5823  LAPLACE CORR    -         -5.53  (seconds)                    DEFLEC18
 JV5823  HORZ ORDER      -  THIRD
 JV5823
 JV5823.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV5823
 JV5823.The horizontal coordinates were established by classical geodetic methods
 JV5823.and adjusted by the National Geodetic Survey in January 1992.
 JV5823
 JV5823.The orthometric height was scaled from a topographic map.
 JV5823
 JV5823.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5823.GEOID18 height accuracy estimate available here.
 JV5823
 JV5823.Click photographs - Photos may exist for this station.
 JV5823
 JV5823.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5823
 JV5823. The following values were computed from the NAD 83(1991) position.
 JV5823
 JV5823;                    North         East     Units Scale Factor Converg.
 JV5823;SPC MD       -   167,198.782   429,858.883   MT  0.99996321   +0 13 00.7
 JV5823;SPC MD       -   548,551.34  1,410,295.35   sFT  0.99996321   +0 13 00.7
 JV5823;UTM  18      - 4,337,209.402   357,081.543   MT  0.99985150   -1 02 42.8
 JV5823
 JV5823!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5823!SPC MD       -   0.99999921  x   0.99996321  =   0.99996242
 JV5823!UTM  18      -   0.99999921  x   0.99985150  =   0.99985071
 JV5823
 JV5823:                Primary Azimuth Mark                     Grid Az
 JV5823:SPC MD       -  FRIENDSHIP                               301 54 49.4
 JV5823:UTM  18      -  FRIENDSHIP                               303 10 32.9
 JV5823
 JV5823_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5708137209(NAD 83)
 JV5823
 JV5823|---------------------------------------------------------------------|
 JV5823| PID    Reference Object                     Distance      Geod. Az  |
 JV5823|                                                           dddmmss.s |
 JV5823| JV5833 FRIENDSHIP                          APPROX. 1.4 KM 3020750.1 |
 JV5823|---------------------------------------------------------------------|
 JV5823
 JV5823                          SUPERSEDED SURVEY CONTROL
 JV5823
 JV5823  NAD 83(1986)-  39 10 20.55702(N)    076 39 16.06861(W) AD(       ) 3
 JV5823  NAD 27      -  39 10 20.16700(N)    076 39 17.18700(W) AD(       ) 3
 JV5823
 JV5823.Superseded values are not recommended for survey control.
 JV5823
 JV5823.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5823.See file dsdata.pdf to determine how the superseded data were derived.
 JV5823
 JV5823_MARKER: DT = TOPOGRAPHIC STATION DISK
 JV5823_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5823_STAMPING: AP 1959 STA A
 JV5823_MARK LOGO: CGS
 JV5823_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV5823_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5823
 JV5823  HISTORY     - Date     Condition        Report By
 JV5823  HISTORY     - 1959     MONUMENTED       CGS
 JV5823  HISTORY     - 1972     GOOD             NGS
 JV5823  HISTORY     - 1975     GOOD             NGS
 JV5823  HISTORY     - 1983     GOOD             NGS
 JV5823  HISTORY     - 19911015 GOOD             NGS
 JV5823
 JV5823                          STATION DESCRIPTION
 JV5823
 JV5823'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (JJC)
 JV5823'THE STATION IS LOCATED ON THE FRIENDSHIP INTERNATIONAL AIRPORT, ANNE
 JV5823'ARUNDELE COUNTY, MARYLAND.  4660 FEET SOUTHEAST OF THE CONTROL
 JV5823'TOWER.  APPROXIMATELY 3400 FEET EAST OF THE CENTER-LINE
 JV5823'INTERSECTION OF RUNWAY 4-22 AND 10-28.  30.0 FEET SOUTH OF THE
 JV5823'SOUTH EDGE OF RUNWAY 10-28 AND DIRECTLY IN LINE WITH RUNWAY
 JV5823'END 28.  A STANDARD TOPOGRAPHIC DISC STAMPED AP 1959 STA-A SET
 JV5823'IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV5823
 JV5823                          STATION RECOVERY (1972)
 JV5823
 JV5823'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (PDC)
 JV5823'THE STATION IS LOCATED ON BALTIMORE FRIENDSHIP AIRPORT AT
 JV5823'RUNWAY END 28.  298.5 FT. SOUTH-EAST OF THE FIRST RUNWAY LIGHT
 JV5823'ON THE SOUTH SIDE OF THE RUNWAY.  30.0 FT. SOUTH OF THE SOUTH
 JV5823'EDGE OF THE RUNWAY AND 21.9 FT. SOUTH-WEST OF THE MOST SOUTHERLY
 JV5823'THRESHOLD LIGHT.  A STANDARD TOPOGRAPHIC DISK STAMPED AP 1959
 JV5823'STA A SET IN THE TOP OF A CONCRETE MONUMENT ABOUT 1-INCH BELOW
 JV5823'THE GROUND.
 JV5823
 JV5823                          STATION RECOVERY (1975)
 JV5823
 JV5823'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (PDC)
 JV5823'THE STATION WAS RECOVERED AS DESCRIBED AND IN GOOD CONDITION.
 JV5823'
 JV5823'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5823'AT BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT.
 JV5823
 JV5823                          STATION RECOVERY (1983)
 JV5823
 JV5823'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (MS)
 JV5823'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5823'
 JV5823'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--AT
 JV5823'BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT.
 JV5823
 JV5823                          STATION RECOVERY (1991)
 JV5823
 JV5823'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991 (DAH)
 JV5823'THE STATION IS LOCATED IN THE SOUTHEAST PART OF THE AIRPORT JUST SOUTH
 JV5823'OF RWY END 28.  IT IS 30.0 FT (9.1 M) SOUTH OF THE SOUTH EDGE OF THE
 JV5823'RUNWAY, 26.2 SOUTHWEST OF THE SOUTHERLY THRESHOLD LIGHT, AND 13.7 FT
 JV5823'(4.2 M) NORTHWEST OF THE NORTH END OF A SWITCHBOX.  IT IS 95.0 FT
 JV5823'NORTH OF AP 1965 STA A2.  THE STATION IS A CGS TOPO DISK STAMPED AP
 JV5823'1959 STA A AND SET IN THE TOP OF A CONCRETE POST 0.1 FT (3.0 CM).
 JV5823'BELOW GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7018 ***********************************************************************
 JV7018  DESIGNATION -  BWI AP STA A2
 JV7018  PID         -  JV7018
 JV7018  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV7018  COUNTRY     -  US
 JV7018  USGS QUAD   -  RELAY (2016)
 JV7018
 JV7018                         *CURRENT SURVEY CONTROL
 JV7018  ______________________________________________________________________
 JV7018* NAD 83(2011) POSITION- 39 10 19.62382(N) 076 39 16.14065(W)   ADJUSTED
 JV7018* NAD 83(2011) ELLIP HT-     5.510 (meters)        (06/27/12)   ADJUSTED
 JV7018* NAD 83(2011) EPOCH   -  2010.00
 JV7018* NAVD 88 ORTHO HEIGHT -    38.28  (+/-2cm)      125.6   (feet) VERTCON3
 JV7018  ______________________________________________________________________
 JV7018  GEOID HEIGHT    -        -32.743 (meters)                     GEOID18
 JV7018  NAD 83(2011) X  -  1,142,869.148 (meters)                     COMP
 JV7018  NAD 83(2011) Y  - -4,817,578.846 (meters)                     COMP
 JV7018  NAD 83(2011) Z  -  4,007,152.136 (meters)                     COMP
 JV7018  LAPLACE CORR    -         -5.53  (seconds)                    DEFLEC18
 JV7018  VERT ORDER      -  THIRD ? (See Below)
 JV7018
 JV7018  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7018  Standards:
 JV7018         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7018            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7018  -------------------------------------------------------------------
 JV7018  NETWORK    3.75  13.88           1.60   1.46   7.08     -0.07222430
 JV7018  -------------------------------------------------------------------
 JV7018  Click here for local accuracies and other accuracy information.
 JV7018
 JV7018.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV7018
 JV7018.The horizontal coordinates were established by GPS observations
 JV7018.and adjusted by the National Geodetic Survey in June 2012.
 JV7018
 JV7018.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7018.been affixed to the stable North American tectonic plate. See 
 JV7018.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7018
 JV7018.The horizontal coordinates are valid at the epoch date displayed above
 JV7018.which is a decimal equivalence of Year/Month/Day.
 JV7018
 JV7018.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV7018.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV7018
 JV7018.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7018.GEOID18 height accuracy estimate available here.
 JV7018
 JV7018.The vertical order pertains to the NGVD 29 superseded value.
 JV7018
 JV7018.Click photographs - Photos may exist for this station.
 JV7018
 JV7018.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7018
 JV7018.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7018
 JV7018.The ellipsoidal height was determined by GPS observations
 JV7018.and is referenced to NAD 83.
 JV7018
 JV7018. The following values were computed from the NAD 83(2011) position.
 JV7018
 JV7018;                    North         East     Units Scale Factor Converg.
 JV7018;SPC MD       -   167,169.903   429,857.030   MT  0.99996319   +0 13 00.7
 JV7018;SPC MD       -   548,456.59  1,410,289.27   sFT  0.99996319   +0 13 00.7
 JV7018;UTM  18      - 4,337,180.574   357,079.055   MT  0.99985151   -1 02 42.8
 JV7018
 JV7018!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7018!SPC MD       -   0.99999914  x   0.99996319  =   0.99996233
 JV7018!UTM  18      -   0.99999914  x   0.99985151  =   0.99985065
 JV7018
 JV7018_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5707937180(NAD 83)
 JV7018
 JV7018                          SUPERSEDED SURVEY CONTROL
 JV7018
 JV7018  NAD 83(2007)-  39 10 19.62437(N)    076 39 16.14153(W) AD(2002.00) 0
 JV7018  ELLIP H (02/10/07)    5.545  (m)                       GP(2002.00)    
 JV7018  ELLIP H (06/09/03)    5.555  (m)                       GP(       ) 4 2
 JV7018  NAD 83(1991)-  39 10 19.62403(N)    076 39 16.14115(W) AD(       ) 2
 JV7018  ELLIP H (02/17/93)    5.488  (m)                       GP(       ) 4 2
 JV7018  NGVD 29              38.52   (m)          126.4    (f) LEVELING    3  
 JV7018
 JV7018.Superseded values are not recommended for survey control.
 JV7018
 JV7018.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7018.See file dsdata.pdf to determine how the superseded data were derived.
 JV7018
 JV7018_MARKER: DT = TOPOGRAPHIC STATION DISK
 JV7018_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7018_STAMPING: AP 1965 STA A2
 JV7018_MARK LOGO: CGS
 JV7018_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7018_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV7018_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7018+SATELLITE: SATELLITE OBSERVATIONS - August 03, 1992
 JV7018
 JV7018  HISTORY     - Date     Condition        Report By
 JV7018  HISTORY     - 1965     MONUMENTED       CGS
 JV7018  HISTORY     - 19911015 GOOD             NGS
 JV7018  HISTORY     - 19920803 GOOD
 JV7018
 JV7018                          STATION DESCRIPTION
 JV7018
 JV7018'DESCRIBED BY COAST AND GEODETIC SURVEY 1965
 JV7018'THE STATION IS LOCATED IN THE SOUTHEAST SECTION OF THE
 JV7018'BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT, SOUTH OF RUNWAY END 28.
 JV7018'THE STATION IS A STANDARD NOS DISK STAMPED---AP 1965 STA A2--- SET IN
 JV7018'THE TOP OF A CONCRETE POST THAT IS 0.1 FT (3.0 CM) BELOW GROUND
 JV7018'LEVEL. THE STATION IS 206.8 FT (63.0 M) SOUTHEAST OF THE FIRST RUNWAY
 JV7018'LIGHT WEST OF THE END, 125.0 FT (38.1 M) SOUTH OF THE SOUTH EDGE OF
 JV7018'THE RUNWAY, 115.9 FT (35.3 M) SOUTH OF THE SOUTHERLY THRESHOLD LIGHT,
 JV7018'95.0 FT (29.0 M) SOUTH OFSTATION FRIENDSHIP INTL AIRPORT AP STA A
 JV7018'1959, AND 90.5 FT (27.6 M) SOUTH OF THE SOUTH END OF A SWITCHBOX .
 JV7018
 JV7018                          STATION RECOVERY (1991)
 JV7018
 JV7018'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991 (DAH)
 JV7018'THE STATION IS LOCATED IN THE SOUTHEAST PART OF THE AIRPORT JUST SOUTH
 JV7018'RWY END 28.  IT IS 125 FT (38.1 M) SOUTH OF THE SOUTH EDGE OF THE
 JV7018'RUNWAY, 115.9 FT (35.3 M) SOUTH OF THE SOUTHERLY THRESHOLD LIGHT,
 JV7018'206.8 FT (63.0 M) SOUTHEAST OF THE 1ST RWY LT WEST OF THE END, 90.5 FT
 JV7018'(27.6 M) SOUTH OF THE SOUTH END OF A SWITCHBOX AND 95.5 FT (29.1 M)
 JV7018'SOUTH OF FRIENDSHIP INTL AIRPORT AP STA A 1959.  IT IS A CGS TOPO DISK
 JV7018'STAMPED AP 1965 STA A2 AND SET IN THE TOP OF A CONCRETE POST 0.1 FT
 JV7018'(3.0 CM) BELOW GROUND LEVEL.
 JV7018
 JV7018                          STATION RECOVERY (1992)
 JV7018
 JV7018'RECOVERED 1992
 JV7018'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5818 ***********************************************************************
 JV5818  DESIGNATION -  BWI AP STA B
 JV5818  PID         -  JV5818
 JV5818  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5818  COUNTRY     -  US
 JV5818  USGS QUAD   -  RELAY (2016)
 JV5818
 JV5818                         *CURRENT SURVEY CONTROL
 JV5818  ______________________________________________________________________
 JV5818* NAD 83(2011) POSITION- 39 10 27.40818(N) 076 41 15.75256(W)   ADJUSTED
 JV5818* NAD 83(2011) ELLIP HT-     9.648 (meters)        (06/27/12)   ADJUSTED
 JV5818* NAD 83(2011) EPOCH   -  2010.00
 JV5818* NAVD 88 ORTHO HEIGHT -    42.4   (meters)      139.    (feet) GPS OBS
 JV5818  ______________________________________________________________________
 JV5818  NAVD 88 orthometric height was determined with geoid model    GEOID96
 JV5818  GEOID HEIGHT    -        -32.647 (meters)                     GEOID96
 JV5818  GEOID HEIGHT    -        -32.647 (meters)                     GEOID18
 JV5818  NAD 83(2011) X  -  1,140,041.090 (meters)                     COMP
 JV5818  NAD 83(2011) Y  - -4,818,096.339 (meters)                     COMP
 JV5818  NAD 83(2011) Z  -  4,007,340.853 (meters)                     COMP
 JV5818  LAPLACE CORR    -         -5.50  (seconds)                    DEFLEC18
 JV5818
 JV5818  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV5818  Standards:
 JV5818         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV5818            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV5818  -------------------------------------------------------------------
 JV5818  NETWORK    0.81   0.98           0.38   0.26   0.50     -0.06656650
 JV5818  -------------------------------------------------------------------
 JV5818  Click here for local accuracies and other accuracy information.
 JV5818
 JV5818.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV5818
 JV5818.The horizontal coordinates were established by GPS observations
 JV5818.and adjusted by the National Geodetic Survey in June 2012.
 JV5818
 JV5818.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV5818.been affixed to the stable North American tectonic plate. See 
 JV5818.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV5818
 JV5818.The horizontal coordinates are valid at the epoch date displayed above
 JV5818.which is a decimal equivalence of Year/Month/Day.
 JV5818
 JV5818.The orthometric height was determined by GPS observations and a
 JV5818.high-resolution geoid model.
 JV5818
 JV5818.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5818.GEOID18 height accuracy estimate available here.
 JV5818
 JV5818.Click photographs - Photos may exist for this station.
 JV5818
 JV5818.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV5818
 JV5818.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5818
 JV5818.The ellipsoidal height was determined by GPS observations
 JV5818.and is referenced to NAD 83.
 JV5818
 JV5818. The following values were computed from the NAD 83(2011) position.
 JV5818
 JV5818;                    North         East     Units Scale Factor Converg.
 JV5818;SPC MD       -   167,399.607   426,985.111   MT  0.99996338   +0 11 45.6
 JV5818;SPC MD       -   549,210.21  1,400,866.99   sFT  0.99996338   +0 11 45.6
 JV5818;UTM  18      - 4,337,473.452   354,213.199   MT  0.99986170   -1 03 58.6
 JV5818
 JV5818!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5818!SPC MD       -   0.99999849  x   0.99996338  =   0.99996187
 JV5818!UTM  18      -   0.99999849  x   0.99986170  =   0.99986019
 JV5818
 JV5818:                Primary Azimuth Mark                     Grid Az
 JV5818:SPC MD       -  SHIPLEY 2                                239 30 40.9
 JV5818:UTM  18      -  SHIPLEY 2                                240 46 25.1
 JV5818
 JV5818_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5421337473(NAD 83)
 JV5818
 JV5818|---------------------------------------------------------------------|
 JV5818| PID    Reference Object                     Distance      Geod. Az  |
 JV5818|                                                           dddmmss.s |
 JV5818| JV5829 SHIPLEY 2                           APPROX. 2.4 KM 2394226.5 |
 JV5818|---------------------------------------------------------------------|
 JV5818
 JV5818                          SUPERSEDED SURVEY CONTROL
 JV5818
 JV5818  NAD 83(2007)-  39 10 27.40846(N)    076 41 15.75359(W) AD(2002.00) 0
 JV5818  ELLIP H (02/10/07)    9.689  (m)                       GP(2002.00)    
 JV5818  ELLIP H (08/19/02)    9.700  (m)                       GP(       ) 4 2
 JV5818  NAD 83(1991)-  39 10 27.40966(N)    076 41 15.75322(W) AD(       ) 1
 JV5818  ELLIP H (04/02/98)    9.771  (m)                       GP(       ) 4 2
 JV5818  NAD 83(1993)-  39 10 27.40966(N)    076 41 15.75318(W) AD(       ) 1
 JV5818  ELLIP H (11/30/95)    9.771  (m)                       GP(       ) 4 2
 JV5818  NAD 83(1991)-  39 10 27.40804(N)    076 41 15.75307(W) AD(       ) 2
 JV5818  ELLIP H (02/17/93)    9.666  (m)                       GP(       ) 4 2
 JV5818  NAD 83(1991)-  39 10 27.40886(N)    076 41 15.75497(W) AD(       ) 3
 JV5818  NAD 83(1986)-  39 10 27.40595(N)    076 41 15.76462(W) AD(       ) 3
 JV5818  NAD 27      -  39 10 27.01800(N)    076 41 16.87900(W) AD(       ) 3
 JV5818  NAVD 88 (11/30/95)   52.7    (m)  GEOID93  model used  GPS OBS        
 JV5818  NGVD 29              42.59   (m)          139.7    (f) LEVELING    3  
 JV5818
 JV5818.Superseded values are not recommended for survey control.
 JV5818
 JV5818.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5818.See file dsdata.pdf to determine how the superseded data were derived.
 JV5818
 JV5818_MARKER: DT = TOPOGRAPHIC STATION DISK
 JV5818_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5818_STAMPING: AP 1959 STA-B
 JV5818_MARK LOGO: CGS
 JV5818_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5818_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5818+STABILITY: SURFACE MOTION
 JV5818_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5818+SATELLITE: SATELLITE OBSERVATIONS - October 09, 1996
 JV5818
 JV5818  HISTORY     - Date     Condition        Report By
 JV5818  HISTORY     - 1959     MONUMENTED       CGS
 JV5818  HISTORY     - 1959     GOOD             CGS
 JV5818  HISTORY     - 1972     GOOD             NGS
 JV5818  HISTORY     - 1975     GOOD             NGS
 JV5818  HISTORY     - 1983     GOOD             NGS
 JV5818  HISTORY     - 19911107 GOOD             NGS
 JV5818  HISTORY     - 19920921 GOOD             NOS
 JV5818  HISTORY     - 19941030 GOOD             NGS
 JV5818  HISTORY     - 19961009 GOOD             NGS
 JV5818
 JV5818                          STATION DESCRIPTION
 JV5818
 JV5818'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (JJC)
 JV5818'THE STATION IS LOCATED ON THE FRIENDSHIP INTERNATIONAL AIRPORT,
 JV5818'ANNE ARUNDELE COUNTY, MARYLAND.  5763 FEET WEST-SOUTHWEST OF THE
 JV5818'AIRPORT CONTROL TOWER.  4600 FEET WEST OF THE INTERSECTION OF
 JV5818'RUNWAYS 15-33 AND 10-28.  30.0 FEET SOUTH OF THE SOUTH EDGE OF
 JV5818'RUNWAY 10-28 AND DIRECTLY IN LINE WITH RUNWAY END 10.  A
 JV5818'STANDARD TOPOGRAPHIC STATION DISC STAMPED AP 1959 STA-B SET
 JV5818'IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV5818
 JV5818                          STATION RECOVERY (1959)
 JV5818
 JV5818'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV5818'RECOVERED IN GOOD CONDITION.
 JV5818
 JV5818                          STATION RECOVERY (1972)
 JV5818
 JV5818'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (PDC)
 JV5818'THE STATION IS LOCATED ON BALTIMORE FRIENDSHIP AIRPORT AT
 JV5818'RUNWAY END 10.  30.6 FT. NORTH-EAST OF THE SOUTH END OF THE
 JV5818'ILS-APPROACH LIGHT THRESHOLD BAR.  30.0 FT. SOUTH OF THE SOUTH
 JV5818'EDGE OF THE RUNWAY AND 23.4 FT. SOUTH-EAST OF THE MOST
 JV5818'SOUTHERLY THRESHOLD LIGHT.  A STANDARD TOPOGRAPHIC DISK STAMPED
 JV5818'AP 1959 STA B SET IN THE TOP OF A CONCRETE MONUMENT ABOUT
 JV5818'2-INCHES BELOW THE GROUND.
 JV5818
 JV5818                          STATION RECOVERY (1975)
 JV5818
 JV5818'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (PDC)
 JV5818'THE STATION WAS RECOVERED AS DESCRIBED AND IN GOOD CONDITION.
 JV5818'
 JV5818'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5818'AT BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT.
 JV5818
 JV5818                          STATION RECOVERY (1983)
 JV5818
 JV5818'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (MS)
 JV5818'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5818'
 JV5818'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--AT
 JV5818'BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT.
 JV5818
 JV5818                          STATION RECOVERY (1991)
 JV5818
 JV5818'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991 (DAH)
 JV5818'THE STATION IS LOCATED IN THE SOUTHWEST PART OF THE AIRPORT JUST SOUTH
 JV5818'OF RWY END 10.  IT IS 30.0 FT (9.1 M) SOUTH OF THE SOUTH EDGE OF THE
 JV5818'RUNWAY AND 28.4 FT (8.7 M) SOUTHEAST OF THE SOUTHERLY THRESHOLD LIGHT.
 JV5818'IT IS 6.7 EAST OF THE CURRENT CONCRETE ILS THRESHOLD LIGHT BAR (EAST
 JV5818'ONE OF TWO), 17.8 FT NORTHEAST OF THE SOUTH END OF THIS LIGHT BAR AND
 JV5818'11.7 FT (3.6 M) SOUTHEAST OF THE SOUTHMOST ILS THRESHOLD LIGHT.  IT IS
 JV5818'A CGS TOPO DISK STAMPED AP 1959 STA B AND SET IN THE TOP OF A CONCRETE
 JV5818'POST 0.2 FT (6.1 CM) BELOW GROUND LEVEL.
 JV5818
 JV5818                          STATION RECOVERY (1992)
 JV5818
 JV5818'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JV5818'THE STATION IS LOCATED IN THE SOUTHWEST PART OF THE
 JV5818'BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT JUST SOUTH OF RUNWAY END
 JV5818'10.
 JV5818'THE STATION IS A STANDARD CGS TOPO DISK STAMPED---AP 1959 STA B--- SET
 JV5818'IN THE TOP OF A CONCRETE POST THAT IS 0.2 FT (6.1 CM) BELOW GROUND
 JV5818'LEVEL. THE STATION IS 30.0 FT (9.1 M) SOUTH OF THE SOUTH EDGE OF THE
 JV5818'RUNWAY, 28.4 FT (8.7 M) SOUTHEAST OF THE SOUTHERLY THERSHOLD LIGHT,
 JV5818'17.8 FT (5.4 M) NORTHEAST OF THE SOUTH END OF THE LIGHT BAR, 11.7 FT
 JV5818'(3.6 M) SOUTHEAST OF THE SOUTHERN MOST ILS THRESHOLD LIGHT, AND 6.7
 JV5818'FT (2.0 M) EAST OF THE CURRENT CONCRETE ILS THRESHOLD LIGHT BAR (EAST
 JV5818'ONE OF TWO).
 JV5818
 JV5818                          STATION RECOVERY (1994)
 JV5818
 JV5818'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 JV5818'THE STATION IS LOCATED ABOUT 8 MI (12.9 KM) SOUTH-SOUTHWEST FROM
 JV5818'DOWNTOWN BALTIMORE, MD.  AT THE BALTIMORE-WASHINGTON INTERNATIONAL
 JV5818'AIRPORT JUST SOUTH OF APPROACH END OF RUNWAY 10.  CONTACT BILL ABEL,
 JV5818'AIRPORT OPERATIONS, AT (410) 859-7018.
 JV5818'
 JV5818'THE STATION IS A STANDARD CGS TOPO DISK STAMPED ---AP 1959 STA B---
 JV5818'SET IN THE TOP OF A CONCRETE MONUMENT THAT IS 0.2 FT (6.1 CM) BELOW
 JV5818'GROUND LEVEL.  THE STATION IS 15 FT (4.6 M) SOUTH OF THE SOUTH EDGE OF
 JV5818'THE RUNWAY, 28.4 FT (8.7 M) SOUTHEAST OF THE SOUTHERLY THRESHOLD
 JV5818'LIGHT, 17.8 FT (5.4 M) NORTHEAST OF THE SOUTH END OF THE LIGHT BAR,
 JV5818'11.7 FT (3.6 M) SOUTHAST OF THE SOUTHERN MOST ILS THRESHOLD LIGHT, AND
 JV5818'6.7 FT (2.0 M) EAST OF THE CURRENT CONCRETE ILS THRESHOLD LIGHT BAR
 JV5818'(EAST ONE OF TWO) .
 JV5818
 JV5818                          STATION RECOVERY (1996)
 JV5818
 JV5818'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 JV5818'RECOVERED AS DESCRIBED, WITH THE FOLLING CHANGES.  THE STATION IS 7.9
 JV5818'FT (2.4 M) EAST OF THE 5TH THRESHOLD LIGHT FROM THE RUNWAY, 30.0 FT
 JV5818'(9.1 M) SOUTH OF THE EDGE OF THE RUNWAY, AND 18.0 FT (5.5 M) SOUTH OF
 JV5818'THE EDGE OF THE PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0714 ***********************************************************************
 JV0714  DESIGNATION -  BWI ARP
 JV0714  PID         -  JV0714
 JV0714  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0714  COUNTRY     -  US
 JV0714  USGS QUAD   -  RELAY (2016)
 JV0714
 JV0714                         *CURRENT SURVEY CONTROL
 JV0714  ______________________________________________________________________
 JV0714* NAD 83(1986) POSITION- 39 10 26.27   (N) 076 40 10.65   (W)   HD_HELD1
 JV0714* NAVD 88 ORTHO HEIGHT -    42.230 (meters)      138.55  (feet) ADJUSTED
 JV0714  ______________________________________________________________________
 JV0714  GEOID HEIGHT    -        -32.698 (meters)                     GEOID18
 JV0714  DYNAMIC HEIGHT  -         42.207 (meters)      138.47  (feet) COMP
 JV0714  MODELED GRAVITY -    980,094.5   (mgal)                       NAVD 88
 JV0714
 JV0714  VERT ORDER      -  SECOND    CLASS 0
 JV0714
 JV0714.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV0714
 JV0714.The horizontal coordinates were determined by differentially corrected
 JV0714.hand held GPS observations or other comparable positioning techniques
 JV0714.and have an estimated accuracy of +/- 3 meters.
 JV0714
 JV0714.The orthometric height was determined by differential leveling and
 JV0714.adjusted by the NATIONAL GEODETIC SURVEY
 JV0714.in June 1991.
 JV0714
 JV0714.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0714.GEOID18 height accuracy estimate available here.
 JV0714
 JV0714.Click photographs - Photos may exist for this station.
 JV0714
 JV0714.The dynamic height is computed by dividing the NAVD 88
 JV0714.geopotential number by the normal gravity value computed on the
 JV0714.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0714.degrees latitude (g = 980.6199 gals.).
 JV0714
 JV0714.The modeled gravity was interpolated from observed gravity values.
 JV0714
 JV0714;                    North         East    Units  Estimated Accuracy
 JV0714;SPC MD       -   167,370.0     428,547.9     MT  (+/- 3 meters HH1 GPS) 
 JV0714
 JV0714_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5577437409(NAD 83)
 JV0714
 JV0714                          SUPERSEDED SURVEY CONTROL
 JV0714
 JV0714  NGVD 29 (11/26/84)   42.473  (m)          139.35   (f) ADJUSTED    2 0
 JV0714
 JV0714.Superseded values are not recommended for survey control.
 JV0714
 JV0714.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0714.See file dsdata.pdf to determine how the superseded data were derived.
 JV0714
 JV0714_MARKER: DT = TOPOGRAPHIC STATION DISK
 JV0714_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0714_STAMPING: ARP 1959
 JV0714_MARK LOGO: CGS
 JV0714_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0714+STABILITY: SURFACE MOTION
 JV0714
 JV0714  HISTORY     - Date     Condition        Report By
 JV0714  HISTORY     - 1959     MONUMENTED       CGS
 JV0714  HISTORY     - 1972     GOOD             NGS
 JV0714  HISTORY     - 1975     GOOD             USGS
 JV0714
 JV0714                          STATION DESCRIPTION
 JV0714
 JV0714'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 JV0714'AT GLEN BURNIE.
 JV0714'THE MARK IS LOCATED IN A GRASSY AREA JUST SOUTH OF THE CONTROL
 JV0714'TOWER.  WEST OF TAXIWAY E AND NORTH OF RUNWAY 10-28.  33.0 FT.
 JV0714'NORTH-WEST OF THE THIRD RUNWAY LIGHT EAST OF THE INTERSECTION
 JV0714'OF RUNWAYS 10-28 AND 15-33, 30.0 FT. NORTH OF THE NORTH EDGE
 JV0714'OF RUNWAY 10-28 AND 26.9 FT. SOUTH OF THE CENTER OF A CATCH
 JV0714'BASIN.  A STANDARD TOPOGRAPHIC DISK STAMPED ARP 1959 SET IN THE
 JV0714'TOP OF A CONCRETE MONUMENT FLUSH WITH THE GROUND.
 JV0714
 JV0714                          STATION RECOVERY (1975)
 JV0714
 JV0714'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1975
 JV0714'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7019 ***********************************************************************
 JV7019  SACS        -  This is a Secondary Airport Control Station.
 JV7019  DESIGNATION -  BWI C
 JV7019  PID         -  JV7019
 JV7019  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV7019  COUNTRY     -  US
 JV7019  USGS QUAD   -  RELAY (2016)
 JV7019
 JV7019                         *CURRENT SURVEY CONTROL
 JV7019  ______________________________________________________________________
 JV7019* NAD 83(2011) POSITION- 39 11 11.87394(N) 076 40 51.34054(W)   ADJUSTED
 JV7019* NAD 83(2011) ELLIP HT-     9.814 (meters)        (06/27/12)   ADJUSTED
 JV7019* NAD 83(2011) EPOCH   -  2010.00
 JV7019* NAVD 88 ORTHO HEIGHT -    42.52  (meters)      139.5   (feet) GPS OBS
 JV7019  ______________________________________________________________________
 JV7019  NAVD 88 orthometric height was determined with geoid model    GEOID96
 JV7019  GEOID HEIGHT    -        -32.654 (meters)                     GEOID96
 JV7019  GEOID HEIGHT    -        -32.656 (meters)                     GEOID18
 JV7019  NAD 83(2011) X  -  1,140,411.770 (meters)                     COMP
 JV7019  NAD 83(2011) Y  - -4,817,118.489 (meters)                     COMP
 JV7019  NAD 83(2011) Z  -  4,008,403.906 (meters)                     COMP
 JV7019  LAPLACE CORR    -         -5.48  (seconds)                    DEFLEC18
 JV7019
 JV7019  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7019  Standards:
 JV7019         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7019            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7019  -------------------------------------------------------------------
 JV7019  NETWORK    0.73   0.78           0.34   0.24   0.40     -0.07505728
 JV7019  -------------------------------------------------------------------
 JV7019  Click here for local accuracies and other accuracy information.
 JV7019
 JV7019.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV7019
 JV7019.The horizontal coordinates were established by GPS observations
 JV7019.and adjusted by the National Geodetic Survey in June 2012.
 JV7019
 JV7019.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7019.been affixed to the stable North American tectonic plate. See 
 JV7019.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7019
 JV7019.The horizontal coordinates are valid at the epoch date displayed above
 JV7019.which is a decimal equivalence of Year/Month/Day.
 JV7019
 JV7019.The orthometric height was determined by GPS observations and a
 JV7019.high-resolution geoid model.
 JV7019
 JV7019.GPS derived orthometric heights for airport stations designated as
 JV7019.PACS or SACS are published to 2 decimal places.  This maintains
 JV7019.centimeter relative accuracy between the PACS and SACS.  It does
 JV7019.not indicate centimeter accuracy relative to other marks which are
 JV7019.part of the published vertical control network.
 JV7019
 JV7019.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7019.GEOID18 height accuracy estimate available here.
 JV7019
 JV7019.Click photographs - Photos may exist for this station.
 JV7019
 JV7019.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7019
 JV7019.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7019
 JV7019.The ellipsoidal height was determined by GPS observations
 JV7019.and is referenced to NAD 83.
 JV7019
 JV7019. The following values were computed from the NAD 83(2011) position.
 JV7019
 JV7019;                    North         East     Units Scale Factor Converg.
 JV7019;SPC MD       -   168,772.837   427,566.273   MT  0.99996453   +0 12 00.9
 JV7019;SPC MD       -   553,715.55  1,402,773.68   sFT  0.99996453   +0 12 00.9
 JV7019;UTM  18      - 4,338,833.404   354,824.411   MT  0.99985951   -1 03 44.2
 JV7019
 JV7019!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7019!SPC MD       -   0.99999846  x   0.99996453  =   0.99996299
 JV7019!UTM  18      -   0.99999846  x   0.99985951  =   0.99985797
 JV7019
 JV7019_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5482438833(NAD 83)
 JV7019
 JV7019                          SUPERSEDED SURVEY CONTROL
 JV7019
 JV7019  NAD 83(2007)-  39 11 11.87427(N)    076 40 51.34159(W) AD(2002.00) 0
 JV7019  ELLIP H (02/10/07)    9.854  (m)                       GP(2002.00)    
 JV7019  ELLIP H (08/19/02)    9.865  (m)                       GP(       ) 4 2
 JV7019  NAD 83(1991)-  39 11 11.87547(N)    076 40 51.34138(W) AD(       ) 1
 JV7019  ELLIP H (04/02/98)    9.936  (m)                       GP(       ) 4 2
 JV7019  NAD 83(1993)-  39 11 11.87547(N)    076 40 51.34134(W) AD(       ) 1
 JV7019  ELLIP H (11/30/95)    9.936  (m)                       GP(       ) 4 2
 JV7019  NAD 83(1991)-  39 11 11.87412(N)    076 40 51.34123(W) AD(       ) 2
 JV7019  ELLIP H (02/17/93)    9.866  (m)                       GP(       ) 4 2
 JV7019  NAVD 88 (11/30/95)   42.50   (m)  GEOID93  model used  GPS OBS        
 JV7019  NGVD 29              42.78   (m)          140.4    (f) LEVELING    3  
 JV7019
 JV7019.Superseded values are not recommended for survey control.
 JV7019
 JV7019.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7019.See file dsdata.pdf to determine how the superseded data were derived.
 JV7019
 JV7019_MARKER: DD = SURVEY DISK
 JV7019_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7019_STAMPING: BWI C 1991
 JV7019_MARK LOGO: NOS
 JV7019_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7019_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7019+STABILITY: SURFACE MOTION
 JV7019_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7019+SATELLITE: SATELLITE OBSERVATIONS - November 30, 2000
 JV7019
 JV7019  HISTORY     - Date     Condition        Report By
 JV7019  HISTORY     - 1991     MONUMENTED       NOS
 JV7019  HISTORY     - 19911107 GOOD             NOS
 JV7019  HISTORY     - 19920803 GOOD
 JV7019  HISTORY     - 19941030 GOOD             NGS
 JV7019  HISTORY     - 19961009 GOOD             NGS
 JV7019  HISTORY     - 20001130 GOOD             NGS
 JV7019  HISTORY     - 20100922 MARK NOT FOUND   JARICE
 JV7019  HISTORY     - 20111202 MARK NOT FOUND   JMTMD
 JV7019
 JV7019                          STATION DESCRIPTION
 JV7019
 JV7019'DESCRIBED BY NATIONAL OCEAN SERVICE 1991
 JV7019'THE STATION IS LOCATED IN THE NORTHWEST PART OF THE
 JV7019'BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT NEAR THE RUNWAY END 15R
 JV7019'AND AT THE SOUTHWEST EDGE OF A MAN-MADE EMBANKMENT.
 JV7019'THE STATIONIS A STANDARD NOS DISK STAMPED---BWI C 1991--- SET IN THE
 JV7019'TOP OF A CONCRETE POST AND IS 0.1 FT (3.0 CM) BELOW THE GROUND. IT IS
 JV7019'ON RANGE WITH THE SOUTHWEST EDGE OF THE 15R PARALLEL TAXIWAY 512.8 FT
 JV7019'(156.3 M) NORTHEAST OF AND ON RANGE WITH THE 2+00 APPROACH LIGHTS,
 JV7019'326.4 FT (99.5 M) NORTH OF THE INTERSECTION OF THE TAXIWAY CENTERLINE
 JV7019'AND HOLD BAR, 240.8 FT (73.4 M) NORTH OF V-13-91 (A CHISELED SQUARE
 JV7019'IN THE CENTER OF THE NORTH SIDE OF A CATCH BASIN), AND 41.1 FT
 JV7019'(12.5 M) SOUTHWEST OF A 6.0 FT (1.8 M) CHAINLINK FENCE.
 JV7019
 JV7019                          STATION RECOVERY (1991)
 JV7019
 JV7019'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1991 (CSM)
 JV7019'THE STATION IS LOCATED IN THE NORTHWEST PART OF AIRPORT NEAR RWY END
 JV7019'15R.  IT IS ON RANGE WITH THE SW EDGE OF THE 15R PARALLEL TAXIWAY,
 JV7019'512.8 FT (156.3 M) NE OF AND ON RANGE WITH THE 2+00 APPROACH LIGHTS.
 JV7019'IT IS 326.4 FT (99.5 M) NORTH OF THE INTERSECTION OF THE TAXIWAY CL
 JV7019'AND HOLD BAR, 240.8 FT (73.4 M) NORTH OF V-13-91 (A CHISELED SQUARE IN
 JV7019'THE CENTER OF THE NORTH SIDE OF A CATCH BASIN), AND 41.1 FT (12.5 M)
 JV7019'SOUTHWEST OF A 6 FT (1.8 M) CHAINLINK FENCE.  IT IS AN NOS DISK
 JV7019'STAMPED BWI C 1991 SET IN THE TOP OF A CONCRETE POST 0.1 FT (3.0 CM)
 JV7019'BELOW GROUND LEVEL AT THE SOUTHWEST EDGE OF A MANMADE EMBANKMENT.
 JV7019
 JV7019                          STATION RECOVERY (1992)
 JV7019
 JV7019'RECOVERED 1992
 JV7019'RECOVERED IN GOOD CONDITION.
 JV7019
 JV7019                          STATION RECOVERY (1994)
 JV7019
 JV7019'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 JV7019'THE STATION IS LOCATED 8 MI (12.9 KM) SOUTH-SOUTHWEST OF DOWNTOWN
 JV7019'BALTIMORE, MD.  AT THE BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT NEAR
 JV7019'THE APPROACH END OF RUNWAY 15R AT THE SOUTHWEST EDGE OF A MAN MADE
 JV7019'EMBANKMENT.  CONTACT BILL ABEL, AIRPORT OPERATIONS, AT (410)
 JV7019'859-7018.
 JV7019'
 JV7019'THE STATION IS A STANDARD NOS DISK STAMPED ---BWI C 1991--- SET IN THE
 JV7019'TOP OF A CONCRETE MONUMENT THE IS 0.1 FT (3.0 CM) BELOW THE GROUND.
 JV7019'IT IS ON RANGE WITH THE SOUTHWEST EDGE OF THE 15R PARALLEL TAXIWAY
 JV7019'512.8 FT (156.3 M) NORTHEAST OF AND ON RANGE WITH THE 2+00 APPROACH
 JV7019'LIGHTS, 326.4 FT (99.5 M) NORTH OF THE INTERSECTION OF THE TAXIWAY
 JV7019'CENTERLINE AND HOLD BAR, 240.8 FT (73.4 M) NORTH OF V-13-91 (CHISLED
 JV7019'SQUARE IN THE CENTER OF THE NORTH SIDE OF A CATCH BASIN) , AND 2.0 FT
 JV7019'(0.6 M) SOUTHWEST OF A 6.0 FT (1.8 M) CHAINLINK FENCE.
 JV7019
 JV7019                          STATION RECOVERY (1996)
 JV7019
 JV7019'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 JV7019'RECOVERED AS DESCRIBED.
 JV7019
 JV7019                          STATION RECOVERY (2000)
 JV7019
 JV7019'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (APF)
 JV7019'RECOVERED AS DESCRIBED.
 JV7019'
 JV7019
 JV7019                          STATION RECOVERY (2010)
 JV7019
 JV7019'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV7019'A SEARCH FOR THE STATION USING A VRS GPS RECEIVER INDICATED THE MARK
 JV7019'WOULD BE COVERED BY ABOUT 7 FEET OF ROADWAY EMBANKMENT.
 JV7019
 JV7019                          STATION RECOVERY (2011)
 JV7019
 JV7019'RECOVERY NOTE BY JMT ENGINEERING 2011 (JAF)
 JV7019'DID NOT FIND WITH HH GPS
 JV7019'(NEW SLOPE EMBANKMENT)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB6219 ***********************************************************************
 AB6219  SACS        -  This is a Secondary Airport Control Station.
 AB6219  DESIGNATION -  BWI D
 AB6219  PID         -  AB6219
 AB6219  STATE/COUNTY-  MD/ANNE ARUNDEL
 AB6219  COUNTRY     -  US
 AB6219  USGS QUAD   -  RELAY (2016)
 AB6219
 AB6219                         *CURRENT SURVEY CONTROL
 AB6219  ______________________________________________________________________
 AB6219* NAD 83(2011) POSITION- 39 11 10.53791(N) 076 39 54.19381(W)   ADJUSTED
 AB6219* NAD 83(2011) ELLIP HT-    14.374 (meters)        (04/04/14)   ADJUSTED
 AB6219* NAD 83(2011) EPOCH   -  2010.00
 AB6219* NAVD 88 ORTHO HEIGHT -    47.063 (meters)      154.41  (feet) ADJUSTED
 AB6219  ______________________________________________________________________
 AB6219  GEOID HEIGHT    -        -32.700 (meters)                     GEOID18
 AB6219  NAD 83(2011) X  -  1,141,753.153 (meters)                     COMP
 AB6219  NAD 83(2011) Y  - -4,816,831.118 (meters)                     COMP
 AB6219  NAD 83(2011) Z  -  4,008,374.852 (meters)                     COMP
 AB6219  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 AB6219  DYNAMIC HEIGHT  -         47.038 (meters)      154.32  (feet) COMP
 AB6219  MODELED GRAVITY -    980,094.8   (mgal)                       NAVD 88
 AB6219
 AB6219  VERT ORDER      -  FIRST     CLASS II
 AB6219
 AB6219  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB6219  Standards:
 AB6219         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB6219            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB6219  -------------------------------------------------------------------
 AB6219  NETWORK    0.30   0.80           0.13   0.11   0.41      0.08759093
 AB6219  -------------------------------------------------------------------
 AB6219  Click here for local accuracies and other accuracy information.
 AB6219
 AB6219.This mark is at Baltimore-Washington Int'l Airport (BWI)
 AB6219
 AB6219.The horizontal coordinates were established by GPS observations
 AB6219.and adjusted by the JOHNSON MIRMIRAN AND THOMPSON in April 2014.
 AB6219
 AB6219.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB6219.been affixed to the stable North American tectonic plate. See 
 AB6219.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB6219
 AB6219.The horizontal coordinates are valid at the epoch date displayed above
 AB6219.which is a decimal equivalence of Year/Month/Day.
 AB6219
 AB6219.The orthometric height was determined by differential leveling and
 AB6219.adjusted by the NATIONAL GEODETIC SURVEY
 AB6219.in June 2008.
 AB6219
 AB6219.No vertical observational check was made to the station.
 AB6219
 AB6219.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB6219.GEOID18 height accuracy estimate available here.
 AB6219
 AB6219.Click photographs - Photos may exist for this station.
 AB6219
 AB6219.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB6219
 AB6219.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB6219
 AB6219.The ellipsoidal height was determined by GPS observations
 AB6219.and is referenced to NAD 83.
 AB6219
 AB6219.The dynamic height is computed by dividing the NAVD 88
 AB6219.geopotential number by the normal gravity value computed on the
 AB6219.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB6219.degrees latitude (g = 980.6199 gals.).
 AB6219
 AB6219.The modeled gravity was interpolated from observed gravity values.
 AB6219
 AB6219. The following values were computed from the NAD 83(2011) position.
 AB6219
 AB6219;                    North         East     Units Scale Factor Converg.
 AB6219;SPC MD       -   168,736.550   428,937.863   MT  0.99996449   +0 12 36.8
 AB6219;SPC MD       -   553,596.50  1,407,273.64   sFT  0.99996449   +0 12 36.8
 AB6219;UTM  18      - 4,338,766.913   356,194.721   MT  0.99985463   -1 03 08.0
 AB6219
 AB6219!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB6219!SPC MD       -   0.99999774  x   0.99996449  =   0.99996223
 AB6219!UTM  18      -   0.99999774  x   0.99985463  =   0.99985238
 AB6219
 AB6219_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5619438766(NAD 83)
 AB6219
 AB6219                          SUPERSEDED SURVEY CONTROL
 AB6219
 AB6219  NAD 83(2011)-  39 11 10.53795(N)    076 39 54.19385(W) AD(2010.00) 0
 AB6219  ELLIP H (06/27/12)   14.357  (m)                       GP(2010.00)    
 AB6219  NAD 83(2007)-  39 11 10.53800(N)    076 39 54.19499(W) AD(2002.00) 0
 AB6219  ELLIP H (02/10/07)   14.363  (m)                       GP(2002.00)    
 AB6219  ELLIP H (10/28/02)   14.378  (m)                       GP(       ) 4 2
 AB6219  NAD 83(1991)-  39 11 10.53909(N)    076 39 54.19473(W) AD(       ) 1
 AB6219  ELLIP H (05/31/01)   14.449  (m)                       GP(       ) 4 2
 AB6219  NAVD 88 (02/29/08)   47.06   (m)  GEOID03  model used  GPS OBS        
 AB6219  NAVD 88 (05/31/01)   47.08   (m)  GEOID99  model used  GPS OBS        
 AB6219
 AB6219.Superseded values are not recommended for survey control.
 AB6219
 AB6219.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB6219.See file dsdata.pdf to determine how the superseded data were derived.
 AB6219
 AB6219_MARKER: DD = SURVEY DISK
 AB6219_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB6219_STAMPING: BWI D 1991
 AB6219_MARK LOGO: NOS
 AB6219_PROJECTION: RECESSED 5 CENTIMETERS
 AB6219_MAGNETIC: N = NO MAGNETIC MATERIAL
 AB6219_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB6219+STABILITY: SURFACE MOTION
 AB6219_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB6219+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2020
 AB6219
 AB6219  HISTORY     - Date     Condition        Report By
 AB6219  HISTORY     - 1991     MONUMENTED       NOS
 AB6219  HISTORY     - 20001130 GOOD             NGS
 AB6219  HISTORY     - 20071107 GOOD             JARICE
 AB6219  HISTORY     - 20120203 GOOD             JMTMD
 AB6219  HISTORY     - 20130214 GOOD             JMTMD
 AB6219  HISTORY     - 20200311 GOOD             JMTMD
 AB6219
 AB6219                          STATION DESCRIPTION
 AB6219
 AB6219'DESCRIBED BY NATIONAL OCEAN SERVICE 1991 (DAH)
 AB6219'THE STATION IS LOCATED IN THE NORTH PART OF THE AIRPORT AT THE EAST
 AB6219'CORNER OF A LARGE CONCRETE FREIGHT RAMP.  IT IS 590 FT (179.8 M) SW OF
 AB6219'THE CL END OF RWY 15L, NW OF THE INTERSECTION OF A TAXIWAY CL AND AN
 AB6219'ILS HOLD LINE AND ON RANGE WITH THE HOLD LINE.  IT IS 82.6 FT (25.2 M)
 AB6219'NORTH OF THE CENTER OF A 3 FT (0.9 M) X 4 FT (1.2 M) STEEL DRAIN AND
 AB6219'21.9 FT (6.7 M) EAST OF THE EAST CORNER OF THE RAMP (V-4-91 CHSQ).  IT
 AB6219'IS AT THE TOP OF A SLOPE AND JUST OUTSIDE A STEEL QUARDRAIL FOR A
 AB6219'SERVICE ROAD.  IT AN NOS DISK STAMPED BWI D 1991 AND SET IN THE TOP OF
 AB6219'A CONCRETE POST FLUSH WITH THE GROUND.
 AB6219
 AB6219                          STATION RECOVERY (2000)
 AB6219
 AB6219'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (APF)
 AB6219'THE STATION IS LOCATED ON THE BALTIMORE-WASHINGTON
 AB6219'INTERNATIONAL AIRPORT AT THE EAST CORNER OF A LARGE CONCRETE
 AB6219'FREIGHT RAMP.
 AB6219'TO REACH THE STATION FROM GATE L, KEEP PROCEEDING STRAIGHT IN  A
 AB6219'SOUTHWEST DIRECTION FOR 0.1 MI TO A PERIMETER ROAD, TURN RIGHT,
 AB6219'HEADING NORTH, AND FOLLOW PERIMETER ROAD FOR 0.65 MI TO THE
 AB6219'STATION ON THE LEFT AT THE TOP OF A SLOPE AND JUST OUTSIDE A STEEL
 AB6219'GUARDRAIL FOR THE PERIMETER ROAD.
 AB6219'THE STATION IS 590.0 FT SOUTHWEST FROM THE CENTERLINE END OF
 AB6219'RUNWAY END 15L,  21.9 FT EAST OF THE EAST CORNER OF A CONCRETE
 AB6219'MAINTENANCE AND FREIGHT RAMP, 82.6 FT NORTH OF THE CENTER OF A 3
 AB6219'BY 4-FOOT STEEL DRAIN, AND THE MONUMENT IS FLUSH WITH THE GROUND
 AB6219'SURFACE.  NOTE--THIS STATION HAS BEEN DESIGNATED A SACS.
 AB6219'
 AB6219
 AB6219                          STATION RECOVERY (2007)
 AB6219
 AB6219'RECOVERY NOTE BY J A RICE INC 2007 (MRA)
 AB6219'RECOVERED AS DESCRIBED.
 AB6219
 AB6219                          STATION RECOVERY (2012)
 AB6219
 AB6219'RECOVERY NOTE BY JMT ENGINEERING 2012 (EAS)
 AB6219'USED FOR GPS RTKN (KEYNET)
 AB6219'N +0.02 E +0.07 Z -0.12
 AB6219
 AB6219                          STATION RECOVERY (2013)
 AB6219
 AB6219'RECOVERY NOTE BY JMT ENGINEERING 2013 (EAS)
 AB6219'STATION RECOVERED AS DESCRIBED.
 AB6219
 AB6219                          STATION RECOVERY (2020)
 AB6219
 AB6219'RECOVERY NOTE BY JMT ENGINEERING 2020 (EAS)
 AB6219'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9297 ***********************************************************************
 AA9297  PACS        -  This is a Primary Airport Control Station.
 AA9297  DESIGNATION -  BWI F
 AA9297  PID         -  AA9297
 AA9297  STATE/COUNTY-  MD/ANNE ARUNDEL
 AA9297  COUNTRY     -  US
 AA9297  USGS QUAD   -  RELAY (2016)
 AA9297
 AA9297                         *CURRENT SURVEY CONTROL
 AA9297  ______________________________________________________________________
 AA9297* NAD 83(2011) POSITION- 39 10 17.92613(N) 076 39 55.57710(W)   ADJUSTED
 AA9297* NAD 83(2011) ELLIP HT-    14.995 (meters)        (04/04/14)   ADJUSTED
 AA9297* NAD 83(2011) EPOCH   -  2010.00
 AA9297* NAVD 88 ORTHO HEIGHT -    47.696 (meters)      156.48  (feet) ADJUSTED
 AA9297  ______________________________________________________________________
 AA9297  GEOID HEIGHT    -        -32.712 (meters)                     GEOID18
 AA9297  NAD 83(2011) X  -  1,141,957.361 (meters)                     COMP
 AA9297  NAD 83(2011) Y  - -4,817,836.600 (meters)                     COMP
 AA9297  NAD 83(2011) Z  -  4,007,117.539 (meters)                     COMP
 AA9297  LAPLACE CORR    -         -5.51  (seconds)                    DEFLEC18
 AA9297  DYNAMIC HEIGHT  -         47.671 (meters)      156.40  (feet) COMP
 AA9297  MODELED GRAVITY -    980,092.5   (mgal)                       NAVD 88
 AA9297
 AA9297  VERT ORDER      -  FIRST     CLASS II
 AA9297
 AA9297  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9297  Standards:
 AA9297         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9297            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9297  -------------------------------------------------------------------
 AA9297  NETWORK    0.21   0.57           0.09   0.08   0.29     -0.01316971
 AA9297  -------------------------------------------------------------------
 AA9297  Click here for local accuracies and other accuracy information.
 AA9297
 AA9297.This mark is at Baltimore-Washington Int'l Airport (BWI)
 AA9297
 AA9297.The horizontal coordinates were established by GPS observations
 AA9297.and adjusted by the National Geodetic Survey in June 2012.
 AA9297
 AA9297.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9297.been affixed to the stable North American tectonic plate. See 
 AA9297.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9297
 AA9297.The horizontal coordinates are valid at the epoch date displayed above
 AA9297.which is a decimal equivalence of Year/Month/Day.
 AA9297
 AA9297.The orthometric height was determined by differential leveling and
 AA9297.adjusted by the NATIONAL GEODETIC SURVEY
 AA9297.in June 2008.
 AA9297
 AA9297.No vertical observational check was made to the station.
 AA9297
 AA9297.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9297.GEOID18 height accuracy estimate available here.
 AA9297
 AA9297.Click photographs - Photos may exist for this station.
 AA9297
 AA9297.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9297
 AA9297.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9297
 AA9297.The ellipsoidal height was determined by GPS observations
 AA9297.and is referenced to NAD 83.
 AA9297
 AA9297.The dynamic height is computed by dividing the NAVD 88
 AA9297.geopotential number by the normal gravity value computed on the
 AA9297.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AA9297.degrees latitude (g = 980.6199 gals.).
 AA9297
 AA9297.The modeled gravity was interpolated from observed gravity values.
 AA9297
 AA9297. The following values were computed from the NAD 83(2011) position.
 AA9297
 AA9297;                    North         East     Units Scale Factor Converg.
 AA9297;SPC MD       -   167,114.025   428,910.612   MT  0.99996314   +0 12 35.9
 AA9297;SPC MD       -   548,273.26  1,407,184.23   sFT  0.99996314   +0 12 35.9
 AA9297;UTM  18      - 4,337,145.559   356,131.740   MT  0.99985486   -1 03 07.7
 AA9297
 AA9297!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9297!SPC MD       -   0.99999765  x   0.99996314  =   0.99996079
 AA9297!UTM  18      -   0.99999765  x   0.99985486  =   0.99985251
 AA9297
 AA9297_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5613137145(NAD 83)
 AA9297
 AA9297                          SUPERSEDED SURVEY CONTROL
 AA9297
 AA9297  ELLIP H (06/27/12)   14.935  (m)                       GP(2010.00)    
 AA9297  NAD 83(2007)-  39 10 17.92645(N)    076 39 55.57814(W) AD(2002.00) 0
 AA9297  ELLIP H (02/10/07)   14.975  (m)                       GP(2002.00)    
 AA9297  ELLIP H (08/09/02)   14.986  (m)                       GP(       ) 4 2
 AA9297  NAD 83(1991)-  39 10 17.92754(N)    076 39 55.57787(W) AD(       ) B
 AA9297  ELLIP H (03/24/98)   15.057  (m)                       GP(       ) 4 1
 AA9297  NAD 83(1993)-  39 10 17.92754(N)    076 39 55.57783(W) AD(       ) B
 AA9297  ELLIP H (11/22/95)   15.057  (m)                       GP(       ) 1 1
 AA9297  NAVD 88 (02/29/08)   47.62   (m)  GEOID03  model used  GPS OBS        
 AA9297  NAVD 88 (03/24/98)   47.70   (m)  GEOID96  model used  GPS OBS        
 AA9297  NAVD 88 (11/22/95)   47.68   (m)  GEOID93  model used  GPS OBS        
 AA9297
 AA9297.Superseded values are not recommended for survey control.
 AA9297
 AA9297.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9297.See file dsdata.pdf to determine how the superseded data were derived.
 AA9297
 AA9297_MARKER: DD = SURVEY DISK
 AA9297_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA9297_STAMPING: BWI F 1991
 AA9297_MARK LOGO: NOS
 AA9297_PROJECTION: PROJECTING 5 CENTIMETERS
 AA9297_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9297_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA9297+STABILITY: SURFACE MOTION
 AA9297_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9297+SATELLITE: SATELLITE OBSERVATIONS - February 14, 2013
 AA9297
 AA9297  HISTORY     - Date     Condition        Report By
 AA9297  HISTORY     - 1991     MONUMENTED       NOS
 AA9297  HISTORY     - 19911107 GOOD             NOS
 AA9297  HISTORY     - 19941030 GOOD             NGS
 AA9297  HISTORY     - 19961009 GOOD             NGS
 AA9297  HISTORY     - 20001130 GOOD             NGS
 AA9297  HISTORY     - 20071101 GOOD             JARICE
 AA9297  HISTORY     - 20120203 GOOD             JMTMD
 AA9297  HISTORY     - 20130214 GOOD             JMTMD
 AA9297  HISTORY     - 20140810 MARK NOT FOUND   JMTMD
 AA9297
 AA9297                          STATION DESCRIPTION
 AA9297
 AA9297'DESCRIBED BY NATIONAL OCEAN SERVICE 1991
 AA9297'THE STATION IS LOCATED NEAR THE CENTER OF THE AIRPORT JUST SOUTH OF
 AA9297'THE INTERSECTION OF RUNWAYS 4-22 AND 10-28.  IT IS ON THE NORTHWEST
 AA9297'POINT OF A LOW HILL AND ABOUT 1200 FT (365.8 M) WEST OF THE VORTAC. IT
 AA9297'IS 524.9 FT (160.0 M) SSW OF THE SECOND RUNWAY LIGHT EAST OF THE
 AA9297'INTERSECTION ALONG THE SOUTH EDGE OF RWY 10-28, 384.5 FT (117.2 M)
 AA9297'EAST OF THE THIRD RUNWAY LIGHT SOUTHWEST OF THE INTERSECTION ALONG THE
 AA9297'SOUTHEAST EDGE OF RWY 4-22, AND 341.5 FT (104.1 M) NORTHEAST OF THE
 AA9297'INTERSECTION OF THE CL OF A NW/SE TAXIWAY AND ITS HOLD BAR.  IT IS 2.3
 AA9297'FT (0.7 M) SOUTH OF A 3 FT (0.9 M) HIGH SECTION OF 2 INCH ORANGE
 AA9297'PLASTIC PIPE DRIVEN INTO THE GROUND AS A WITNESS POST.  THE STATION IS
 AA9297'AN NOS DISK STAMPED BWI F 1991 AND SET IN THE TOP OF A CONCRETE POST
 AA9297'WHICH PROJECTS 2 INCHES ABOVE THE GROUND.
 AA9297
 AA9297                          STATION RECOVERY (1994)
 AA9297
 AA9297'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 AA9297'THE STATION IS LOCATED ABOUT 8 MI (12.9 KM) SOUTH-SOUTHWEST OF
 AA9297'DOWNTOWN BALTIMORE, MD.  AT THE BALTIMORE-WASHINGTON INTERNATIONAL
 AA9297'AIRPORT JUST SOUTH OF THE INTERSECTION OF RUNWAYS 4-22 AND 10-28.  IT
 AA9297'IS ON THE NORTHWEST POINT OF A LOW HILL ABOUT 1200 FT (365.8 M) WEST
 AA9297'OF THE VORTAC.  CONTACT BILL ABEL, AIRPORT OPERATIONS, AT (410)
 AA9297'859-7018.
 AA9297'
 AA9297'IT IS 524.9 FT (160.0 M) SOUTH-SOUTHWEST OF THE OF THE SECOND RUNWAY
 AA9297'LIGHT EAST OF THE INTERSECTION ALONG THE SOUTH EDGE OF RUNWAY 10-28.
 AA9297'384.5 FT (117.2 M) EAST OF THE THIRD RUNWAY LIGHT SOUTHWEST OF THE
 AA9297'INTERSECTION ALONG THE SOUTHEAST EDGE OF RUNWAY 4-22, AND 341.5 FT
 AA9297'(104.1 M) NORTHEAST OF THE INTERSECTION OF THE CENTERLINE OF A
 AA9297'NORTHWEST-SOUTHEAST TAXIWAY AND ITS HOLD BAR.  THE STATION IS A
 AA9297'STANDARD NOS DISK STAMPED ---BWI F 1991--- AND SET IN THE TOP OF A
 AA9297'CONCRETE MONUMENT WHICH PROJECTS 2 INCHES ABOVE THE GROUND.
 AA9297
 AA9297                          STATION RECOVERY (1996)
 AA9297
 AA9297'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 AA9297'RECOVERED AS DESCRIBED.
 AA9297
 AA9297                          STATION RECOVERY (2000)
 AA9297
 AA9297'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (APF)
 AA9297'RECOVERED AS DESCRIBED.
 AA9297'
 AA9297
 AA9297                          STATION RECOVERY (2007)
 AA9297
 AA9297'RECOVERY NOTE BY J A RICE INC 2007 (MRA)
 AA9297'RECOVERED AS DESCRIBED.
 AA9297
 AA9297                          STATION RECOVERY (2012)
 AA9297
 AA9297'RECOVERY NOTE BY JMT ENGINEERING 2012 (EAS)
 AA9297'USED FOR GPS RTKN (KEYNET)
 AA9297'N -0.02 E +0.07 Z -0.13
 AA9297
 AA9297                          STATION RECOVERY (2013)
 AA9297
 AA9297'RECOVERY NOTE BY JMT ENGINEERING 2013 (EAS)
 AA9297'RECOVERED AS DESCRIBED. THIS MONUMENT WILL BE DESTROYED DURING THE
 AA9297'RECONSTRUCTION OF RUNWAY 10-28. THIS MONUMENT IS NO LONGER A PACS.
 AA9297
 AA9297                          STATION RECOVERY (2014)
 AA9297
 AA9297'RECOVERY NOTE BY JMT ENGINEERING 2014 (EAS)
 AA9297'MONUMENT DESTROYED DURING NEW CONSTRUCTION
 AA9297'(SEE BWI J AND BWI K AS NEW SACS AND PACS)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ9002 ***********************************************************************
 DJ9002  DESIGNATION -  BWI G
 DJ9002  PID         -  DJ9002
 DJ9002  STATE/COUNTY-  MD/ANNE ARUNDEL
 DJ9002  COUNTRY     -  US
 DJ9002  USGS QUAD   -  RELAY (2016)
 DJ9002
 DJ9002                         *CURRENT SURVEY CONTROL
 DJ9002  ______________________________________________________________________
 DJ9002* NAD 83(2011) POSITION- 39 11 07.04940(N) 076 40 28.62941(W)   ADJUSTED
 DJ9002* NAD 83(2011) ELLIP HT-    18.042 (meters)        (06/27/12)   ADJUSTED
 DJ9002* NAD 83(2011) EPOCH   -  2010.00
 DJ9002* NAVD 88 ORTHO HEIGHT -    50.714 (meters)      166.38  (feet) ADJUSTED
 DJ9002  ______________________________________________________________________
 DJ9002  GEOID HEIGHT    -        -32.674 (meters)                     GEOID18
 DJ9002  NAD 83(2011) X  -  1,140,965.297 (meters)                     COMP
 DJ9002  NAD 83(2011) Y  - -4,817,090.575 (meters)                     COMP
 DJ9002  NAD 83(2011) Z  -  4,008,293.784 (meters)                     COMP
 DJ9002  LAPLACE CORR    -         -5.45  (seconds)                    DEFLEC18
 DJ9002  DYNAMIC HEIGHT  -         50.687 (meters)      166.30  (feet) COMP
 DJ9002  MODELED GRAVITY -    980,095.4   (mgal)                       NAVD 88
 DJ9002
 DJ9002  VERT ORDER      -  FIRST     CLASS II
 DJ9002
 DJ9002  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ9002  Standards:
 DJ9002         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ9002            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ9002  -------------------------------------------------------------------
 DJ9002  NETWORK    0.28   0.67           0.12   0.11   0.34     -0.00632887
 DJ9002  -------------------------------------------------------------------
 DJ9002  Click here for local accuracies and other accuracy information.
 DJ9002
 DJ9002.The horizontal coordinates were established by GPS observations
 DJ9002.and adjusted by the National Geodetic Survey in June 2012.
 DJ9002
 DJ9002.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ9002.been affixed to the stable North American tectonic plate. See 
 DJ9002.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ9002
 DJ9002.The horizontal coordinates are valid at the epoch date displayed above
 DJ9002.which is a decimal equivalence of Year/Month/Day.
 DJ9002
 DJ9002.The orthometric height was determined by differential leveling and
 DJ9002.adjusted by the NATIONAL GEODETIC SURVEY
 DJ9002.in June 2008.
 DJ9002
 DJ9002.No vertical observational check was made to the station.
 DJ9002
 DJ9002.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ9002.GEOID18 height accuracy estimate available here.
 DJ9002
 DJ9002.Click photographs - Photos may exist for this station.
 DJ9002
 DJ9002.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ9002
 DJ9002.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ9002
 DJ9002.The ellipsoidal height was determined by GPS observations
 DJ9002.and is referenced to NAD 83.
 DJ9002
 DJ9002.The dynamic height is computed by dividing the NAVD 88
 DJ9002.geopotential number by the normal gravity value computed on the
 DJ9002.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ9002.degrees latitude (g = 980.6199 gals.).
 DJ9002
 DJ9002.The modeled gravity was interpolated from observed gravity values.
 DJ9002
 DJ9002. The following values were computed from the NAD 83(2011) position.
 DJ9002
 DJ9002;                    North         East     Units Scale Factor Converg.
 DJ9002;SPC MD       -   168,625.985   428,111.838   MT  0.99996440   +0 12 15.2
 DJ9002;SPC MD       -   553,233.75  1,404,563.59   sFT  0.99996440   +0 12 15.2
 DJ9002;UTM  18      - 4,338,674.584   355,366.550   MT  0.99985758   -1 03 29.7
 DJ9002
 DJ9002!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ9002!SPC MD       -   0.99999717  x   0.99996440  =   0.99996157
 DJ9002!UTM  18      -   0.99999717  x   0.99985758  =   0.99985475
 DJ9002
 DJ9002_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5536638674(NAD 83)
 DJ9002
 DJ9002                          SUPERSEDED SURVEY CONTROL
 DJ9002
 DJ9002  NAD 83(2007)-  39 11 07.04959(N)    076 40 28.63045(W) AD(2002.00) 1
 DJ9002  ELLIP H (02/29/08)   18.061  (m)                       GP(2002.00) 2 2
 DJ9002  NAVD 88 (02/29/08)   50.7    (m)  GEOID03  model used  GPS OBS        
 DJ9002
 DJ9002.Superseded values are not recommended for survey control.
 DJ9002
 DJ9002.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ9002.See file dsdata.pdf to determine how the superseded data were derived.
 DJ9002
 DJ9002_MARKER: DD = SURVEY DISK
 DJ9002_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ9002_STAMPING: BWI G 2007
 DJ9002_MARK LOGO: MAA
 DJ9002_PROJECTION: RECESSED 5 CENTIMETERS
 DJ9002_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 DJ9002_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ9002+STABILITY: SURFACE MOTION
 DJ9002_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ9002+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2020
 DJ9002
 DJ9002  HISTORY     - Date     Condition        Report By
 DJ9002  HISTORY     - 20071127 MONUMENTED       JMTMD
 DJ9002  HISTORY     - 20200311 GOOD             JMTMD
 DJ9002
 DJ9002                          STATION DESCRIPTION
 DJ9002
 DJ9002'DESCRIBED BY JMT ENGINEERING 2007
 DJ9002'THE MARK IS LOCATED ABOUT 3.3 MI (5.3 KM) SOUTH-SOUTHEAST OF RELAY,
 DJ9002'2.8 MI (4.5 KM) SOUTHEAST OF ELKRIDGE AND 2.7 MI (4.3 KM) EAST OF
 DJ9002'HANOVER.  OWNERSHIP--BALTIMORE WASHINGTON INTERNATIONAL AIRPORT.
 DJ9002'
 DJ9002'TO REACH FROM THE JUNCTION OF I-97 AND MD 176, GO WEST-SOUTHWEST ON MD
 DJ9002'176 FOR 0.24 MI (0.39 KM) TO AN INTERSECTION.  TURN RIGHT AND GO NORTH
 DJ9002'ON MD 162 FOR 2.32 MI (3.74 KM) TO A INTERSECTION.  CONTINUE STRAIGHT
 DJ9002'AHEAD FOR 0.74 MI (1.20 KM) TO A INTERSECTION.  TURN LEFT AND GO SOUTH
 DJ9002'ON SCOTT DRIVE FOR 0.10 MI (0.17 KM) TO A SIDE ROAD LEFT.  TURN LEFT
 DJ9002'AND GO SOUTHEAST ON ELM ROAD FOR 0.25 MI (0.40 KM) TO A RAMP ON THE
 DJ9002'RIGHT.  TURN RIGHT AND GO SOUTHWEST ON THE RAMP FOR 0.09 MI (0.15 KM)
 DJ9002'TO THE MARK ON THE RIGHT.
 DJ9002'
 DJ9002'IT IS 192.8 FT (58.8 M) EAST OF A METAL SIGN SHAPED LIKE A HOT-AIR
 DJ9002'BALLOON, 89.0 FT (27.1 M) NORTHEAST OF A 30-IN (76 CM) SPRUCE TREE,
 DJ9002'88.5 FT (27.0 M) NORTH-NORTHWEST OF A STREET LIGHT POLE, 62.2 FT (19.0
 DJ9002'M) NORTHEAST OF A WATER VALVE NUMBERED 118, 57.0 FT (17.4 M) NORTHWEST
 DJ9002'OF THE CENTERLINE OF A PAVED PARKING LOT AND SET IN THE TOP OF A
 DJ9002'12-INCH (30 CM) ROUND CONCRETE POST.
 DJ9002
 DJ9002                          STATION RECOVERY (2020)
 DJ9002
 DJ9002'RECOVERY NOTE BY JMT ENGINEERING 2020 (EAS)
 DJ9002'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ9003 ***********************************************************************
 DJ9003  DESIGNATION -  BWI H
 DJ9003  PID         -  DJ9003
 DJ9003  STATE/COUNTY-  MD/ANNE ARUNDEL
 DJ9003  COUNTRY     -  US
 DJ9003  USGS QUAD   -  RELAY (2016)
 DJ9003
 DJ9003                         *CURRENT SURVEY CONTROL
 DJ9003  ______________________________________________________________________
 DJ9003* NAD 83(2011) POSITION- 39 10 21.85662(N) 076 41 23.87336(W)   ADJUSTED
 DJ9003* NAD 83(2011) ELLIP HT-     7.827 (meters)        (04/04/14)   ADJUSTED
 DJ9003* NAD 83(2011) EPOCH   -  2010.00
 DJ9003* NAVD 88 ORTHO HEIGHT -    40.459 (meters)      132.74  (feet) ADJUSTED
 DJ9003  ______________________________________________________________________
 DJ9003  GEOID HEIGHT    -        -32.642 (meters)                     GEOID18
 DJ9003  NAD 83(2011) X  -  1,139,875.969 (meters)                     COMP
 DJ9003  NAD 83(2011) Y  - -4,818,245.084 (meters)                     COMP
 DJ9003  NAD 83(2011) Z  -  4,007,206.980 (meters)                     COMP
 DJ9003  LAPLACE CORR    -         -5.52  (seconds)                    DEFLEC18
 DJ9003  DYNAMIC HEIGHT  -         40.437 (meters)      132.67  (feet) COMP
 DJ9003  MODELED GRAVITY -    980,093.9   (mgal)                       NAVD 88
 DJ9003
 DJ9003  VERT ORDER      -  FIRST     CLASS II
 DJ9003
 DJ9003  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ9003  Standards:
 DJ9003         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ9003            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ9003  -------------------------------------------------------------------
 DJ9003  NETWORK    0.22   0.49           0.10   0.08   0.25      0.00597400
 DJ9003  -------------------------------------------------------------------
 DJ9003  Click here for local accuracies and other accuracy information.
 DJ9003
 DJ9003.The horizontal coordinates were established by GPS observations
 DJ9003.and adjusted by the National Geodetic Survey in June 2012.
 DJ9003
 DJ9003.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ9003.been affixed to the stable North American tectonic plate. See 
 DJ9003.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ9003
 DJ9003.The horizontal coordinates are valid at the epoch date displayed above
 DJ9003.which is a decimal equivalence of Year/Month/Day.
 DJ9003
 DJ9003.The orthometric height was determined by differential leveling and
 DJ9003.adjusted by the NATIONAL GEODETIC SURVEY
 DJ9003.in June 2008.
 DJ9003
 DJ9003.No vertical observational check was made to the station.
 DJ9003
 DJ9003.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ9003.GEOID18 height accuracy estimate available here.
 DJ9003
 DJ9003.Click photographs - Photos may exist for this station.
 DJ9003
 DJ9003.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ9003
 DJ9003.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ9003
 DJ9003.The ellipsoidal height was determined by GPS observations
 DJ9003.and is referenced to NAD 83.
 DJ9003
 DJ9003.The dynamic height is computed by dividing the NAVD 88
 DJ9003.geopotential number by the normal gravity value computed on the
 DJ9003.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ9003.degrees latitude (g = 980.6199 gals.).
 DJ9003
 DJ9003.The modeled gravity was interpolated from observed gravity values.
 DJ9003
 DJ9003. The following values were computed from the NAD 83(2011) position.
 DJ9003
 DJ9003;                    North         East     Units Scale Factor Converg.
 DJ9003;SPC MD       -   167,227.748   426,790.771   MT  0.99996324   +0 11 40.5
 DJ9003;SPC MD       -   548,646.37  1,400,229.39   sFT  0.99996324   +0 11 40.5
 DJ9003;UTM  18      - 4,337,305.933   354,015.140   MT  0.99986241   -1 04 03.6
 DJ9003
 DJ9003!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ9003!SPC MD       -   0.99999877  x   0.99996324  =   0.99996201
 DJ9003!UTM  18      -   0.99999877  x   0.99986241  =   0.99986118
 DJ9003
 DJ9003_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5401537305(NAD 83)
 DJ9003
 DJ9003                          SUPERSEDED SURVEY CONTROL
 DJ9003
 DJ9003  ELLIP H (06/27/12)    7.757  (m)                       GP(2010.00)    
 DJ9003  NAD 83(2007)-  39 10 21.85685(N)    076 41 23.87437(W) AD(2002.00) 1
 DJ9003  ELLIP H (02/29/08)    7.778  (m)                       GP(2002.00) 2 2
 DJ9003  NAVD 88 (02/29/08)   40.4    (m)  GEOID03  model used  GPS OBS        
 DJ9003
 DJ9003.Superseded values are not recommended for survey control.
 DJ9003
 DJ9003.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ9003.See file dsdata.pdf to determine how the superseded data were derived.
 DJ9003
 DJ9003_MARKER: DD = SURVEY DISK
 DJ9003_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ9003_STAMPING: BWI H 2007
 DJ9003_MARK LOGO: MAA
 DJ9003_PROJECTION: RECESSED 10 CENTIMETERS
 DJ9003_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 DJ9003_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ9003+STABILITY: SURFACE MOTION
 DJ9003_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ9003+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2016
 DJ9003
 DJ9003  HISTORY     - Date     Condition        Report By
 DJ9003  HISTORY     - 20071127 MONUMENTED       JMTMD
 DJ9003  HISTORY     - 20120203 GOOD             JMTMD
 DJ9003  HISTORY     - 20130214 GOOD             JMTMD
 DJ9003  HISTORY     - 20160907 GOOD             JMTMD
 DJ9003  HISTORY     - 20161031 GOOD             JMTMD
 DJ9003
 DJ9003                          STATION DESCRIPTION
 DJ9003
 DJ9003'DESCRIBED BY JMT ENGINEERING 2007
 DJ9003'THE MARK IS LOCATED ABOUT 3.9 MI (6.2 KM) SOUTH OF RELAY, 3.0 MI (4.9
 DJ9003'KM) SOUTH-SOUTHEAST OF ELKRIDGE AND 2.3 MI (3.7 KM) SOUTHEAST OF
 DJ9003'HANOVER AT BALTIMORE WASHINGTON INTERNATIONAL AIRPORT.  CONTACT
 DJ9003'AIRPORT OPERATIONS AT 410-859-7018 FOR ACCESS TO THE MARK.
 DJ9003'
 DJ9003'IT IS 601.7 FT (183.4 M) WEST OF THE NORTHWEST CORNER OF A CHAIN LINK
 DJ9003'FENCE, 409.8 FT (124.9 M) WEST-NORTHWEST OF THE NORTHWEST END OF A
 DJ9003'36-INCH (91 CM) CONCRETE PIPE AND HEADWALL, 217.6 FT (66.3 M)
 DJ9003'EAST-SOUTHEAST OF THE EAST END OF A CONCRETE PIPE AND HEADWALL, 121.4
 DJ9003'FT (37.0 M) SOUTHWEST OF A PROPANE CANNON 115.5 FT (35.2 M) SOUTH OF
 DJ9003'THE CENTERLINE OF AN EAST-WEST DITCH AND SET IN THE TOP OF A 12-INCH
 DJ9003'(30 CM) ROUND CONCRETE POST.
 DJ9003
 DJ9003                          STATION RECOVERY (2012)
 DJ9003
 DJ9003'RECOVERY NOTE BY JMT ENGINEERING 2012 (EAS)
 DJ9003'RECOVERED IN GOOD CONDITION.
 DJ9003
 DJ9003                          STATION RECOVERY (2013)
 DJ9003
 DJ9003'RECOVERY NOTE BY JMT ENGINEERING 2013 (EAS)
 DJ9003'RECOVERED AS DESCRIBED. THIS MONUMENT MAY BE DESTROYED DURING THE
 DJ9003'RECONSTRUCTION OF RUNWAY 10-28.
 DJ9003
 DJ9003                          STATION RECOVERY (2016)
 DJ9003
 DJ9003'RECOVERY NOTE BY JMT ENGINEERING 2016 (EAS)
 DJ9003'RECOVERED AS DESCRIBED.
 DJ9003
 DJ9003                          STATION RECOVERY (2016)
 DJ9003
 DJ9003'RECOVERY NOTE BY JMT ENGINEERING 2016 (EAS)
 DJ9003'GOOD POINT FOR STATIC BASE.(MUST BE BWI BADGED)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP2328 ***********************************************************************
 DP2328  PACS        -  This is a Primary Airport Control Station.
 DP2328  DESIGNATION -  BWI J
 DP2328  PID         -  DP2328
 DP2328  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP2328  COUNTRY     -  US
 DP2328  USGS QUAD   -  RELAY (2016)
 DP2328
 DP2328                         *CURRENT SURVEY CONTROL
 DP2328  ______________________________________________________________________
 DP2328* NAD 83(2011) POSITION- 39 10 17.81278(N) 076 39 29.62979(W)   ADJUSTED
 DP2328* NAD 83(2011) ELLIP HT-     6.288 (meters)        (04/04/14)   ADJUSTED
 DP2328* NAD 83(2011) EPOCH   -  2010.00
 DP2328* NAVD 88 ORTHO HEIGHT -    39.01  (meters)      128.0   (feet) GPS OBS
 DP2328  ______________________________________________________________________
 DP2328  NAVD 88 orthometric height was determined with geoid model    GEOID12A
 DP2328  GEOID HEIGHT    -        -32.744 (meters)                     GEOID12A
 DP2328  GEOID HEIGHT    -        -32.733 (meters)                     GEOID18
 DP2328  NAD 83(2011) X  -  1,142,562.369 (meters)                     COMP
 DP2328  NAD 83(2011) Y  - -4,817,688.488 (meters)                     COMP
 DP2328  NAD 83(2011) Z  -  4,007,109.329 (meters)                     COMP
 DP2328  LAPLACE CORR    -         -5.53  (seconds)                    DEFLEC18
 DP2328
 DP2328  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP2328  Standards:
 DP2328         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP2328            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP2328  -------------------------------------------------------------------
 DP2328  NETWORK    0.33   0.55           0.15   0.11   0.28      0.00975680
 DP2328  -------------------------------------------------------------------
 DP2328  Click here for local accuracies and other accuracy information.
 DP2328
 DP2328.This mark is at Baltimore-Washington Int'l Airport (BWI)
 DP2328
 DP2328.The horizontal coordinates were established by GPS observations
 DP2328.and adjusted by the JOHNSON MIRMIRAN AND THOMPSON in April 2014.
 DP2328
 DP2328.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP2328.been affixed to the stable North American tectonic plate. See 
 DP2328.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP2328
 DP2328.The horizontal coordinates are valid at the epoch date displayed above
 DP2328.which is a decimal equivalence of Year/Month/Day.
 DP2328
 DP2328.The orthometric height was determined by GPS observations and a
 DP2328.high-resolution geoid model.
 DP2328
 DP2328.GPS derived orthometric heights for airport stations designated as
 DP2328.PACS or SACS are published to 2 decimal places.  This maintains
 DP2328.centimeter relative accuracy between the PACS and SACS.  It does
 DP2328.not indicate centimeter accuracy relative to other marks which are
 DP2328.part of the published vertical control network.
 DP2328
 DP2328.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP2328.GEOID18 height accuracy estimate available here.
 DP2328
 DP2328.Click photographs - Photos may exist for this station.
 DP2328
 DP2328.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP2328
 DP2328.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP2328
 DP2328.The ellipsoidal height was determined by GPS observations
 DP2328.and is referenced to NAD 83.
 DP2328
 DP2328. The following values were computed from the NAD 83(2011) position.
 DP2328
 DP2328;                    North         East     Units Scale Factor Converg.
 DP2328;SPC MD       -   167,112.837   429,533.453   MT  0.99996314   +0 12 52.2
 DP2328;SPC MD       -   548,269.37  1,409,227.67   sFT  0.99996314   +0 12 52.2
 DP2328;UTM  18      - 4,337,130.654   356,754.336   MT  0.99985266   -1 02 51.3
 DP2328
 DP2328!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP2328!SPC MD       -   0.99999901  x   0.99996314  =   0.99996215
 DP2328!UTM  18      -   0.99999901  x   0.99985266  =   0.99985167
 DP2328
 DP2328_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5675437130(NAD 83)
 DP2328
 DP2328                          SUPERSEDED SURVEY CONTROL
 DP2328
 DP2328.No superseded survey control is available for this station.
 DP2328
 DP2328_MARKER: F = FLANGE-ENCASED ROD
 DP2328_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP2328_STAMPING: BWI J 2012
 DP2328_MARK LOGO: MAA
 DP2328_PROJECTION: FLUSH
 DP2328_MAGNETIC: I = MARKER IS A STEEL ROD
 DP2328_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP2328_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP2328+SATELLITE: SATELLITE OBSERVATIONS - February 12, 2013
 DP2328_ROD/PIPE-DEPTH: 11.2 meters
 DP2328_SLEEVE-DEPTH  : 0.6 meters
 DP2328
 DP2328  HISTORY     - Date     Condition        Report By
 DP2328  HISTORY     - 20130212 MONUMENTED       JMTMD
 DP2328
 DP2328                          STATION DESCRIPTION
 DP2328
 DP2328'DESCRIBED BY JMT ENGINEERING 2013 (EAS)
 DP2328'THE STATION IS LOCATED ON THE GROUNDS OF THE BALTIMORE-WASHINGTON
 DP2328'INTERNATIONAL AIRPORT NEAR THE CENTER OF THE AIRPORT SOUTHWEST OF THE
 DP2328'APPROACH END OF RUNWAY 28.  IT IS WEST OF A MACADAM DRIVE LEADING TO
 DP2328'BUILDING NUMBER 261. CONTACT AIRPORT OPERATIONS, AT 410-859-7018.  A
 DP2328'BWI BADGE WITH ESCORT CLEARANCE, PERMISSION TO OPERATE A VEHICLE ON
 DP2328'AIRPORT GROUNDS AND TO UTILIZE POWER GATES IS REQUIRED TO ACCESS THIS
 DP2328'MONUMENT.
 DP2328'
 DP2328'TO REACH THE STATION FROM THE INTERSECTION OF I-195 AND MARYLAND ROUTE
 DP2328'170 (AVIATION BOULEVARD) PROCEED SOUTH ON I-195 TO REACH THE AIRPORT.
 DP2328'PROCEED ON THE AIRPORT GROUNDS TO GATE 'J' TO ACCESS THE INTERIOR
 DP2328'ROADS LEADING EAST TO THE GENERAL AVIATION PARKING LOT.  FROM THE
 DP2328'SOUTH END OF THE GENERAL AVIATION PARKING LOT, GO SOUTH ON A GRAVEL
 DP2328'SERVICE ROAD FOR A TOTAL OF 1.4 MI (2.3 KM) PAST THE APPROACH END OF
 DP2328'RUNWAY 33R CONTINUING ON THE SAME GRAVEL ROAD NOW HEADING WEST AND
 DP2328'PAST THE APPROACH END OF RUNWAY 28 TO A BEND IN THE ROAD HEADING NORTH
 DP2328'AND THEN TO A TEE IN THE ROAD.  TURN LEFT ON MACADAM SERVICE ROAD
 DP2328'PARALLEL TO RUNWAY 28.  CONTINUE WEST FOR 80 FT (24.4 M) TO A MACADAM
 DP2328'DRIVE ON THE RIGHT.  TURN RIGHT AND STOP.  STATION IS ON THE LEFT IN
 DP2328'GRASS AREA.
 DP2328'
 DP2328'THE STATION IS A STEEL ROD DRIVEN TO REFUSAL OF WHICH THE UPPER 2 FT
 DP2328'(0.6 M) IS ENCASED IN A GREASE FILLED FINNED SLEEVE INSIDE OF A 4 FT
 DP2328'(1.2 M) DEEP SAND FILLED PVC SLEEVE AND CAPPED FLUSH WITH THE GROUND.
 DP2328'THE STATION IS 14.2 M (46.6 FT) NORTHWEST FROM THE INTERSECTION OF THE
 DP2328'NORTH DRIVE AND THE SERVICE ROAD.  THE STATION IS 9.1 M (29.9 FT)
 DP2328'NORTH OF THE EDGE OF THE SERVICE ROAD.  THE STATION IS 7.6 M (24.9 FT)
 DP2328'WEST OF THE EDGE OF THE NORTH DRIVE.  THIS STATION HAS BEEN DESIGNATED
 DP2328'AS A PRIMARY AIRPORT CONTROL STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP2329 ***********************************************************************
 DP2329  SACS        -  This is a Secondary Airport Control Station.
 DP2329  DESIGNATION -  BWI K
 DP2329  PID         -  DP2329
 DP2329  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP2329  COUNTRY     -  US
 DP2329  USGS QUAD   -  RELAY (2016)
 DP2329
 DP2329                         *CURRENT SURVEY CONTROL
 DP2329  ______________________________________________________________________
 DP2329* NAD 83(2011) POSITION- 39 10 04.17817(N) 076 40 05.64453(W)   ADJUSTED
 DP2329* NAD 83(2011) ELLIP HT-     8.730 (meters)        (04/04/14)   ADJUSTED
 DP2329* NAD 83(2011) EPOCH   -  2010.00
 DP2329* NAVD 88 ORTHO HEIGHT -    41.43  (meters)      135.9   (feet) GPS OBS
 DP2329  ______________________________________________________________________
 DP2329  NAVD 88 orthometric height was determined with geoid model    GEOID12A
 DP2329  GEOID HEIGHT    -        -32.718 (meters)                     GEOID12A
 DP2329  GEOID HEIGHT    -        -32.707 (meters)                     GEOID18
 DP2329  NAD 83(2011) X  -  1,141,782.838 (meters)                     COMP
 DP2329  NAD 83(2011) Y  - -4,818,148.175 (meters)                     COMP
 DP2329  NAD 83(2011) Z  -  4,006,784.889 (meters)                     COMP
 DP2329  LAPLACE CORR    -         -5.51  (seconds)                    DEFLEC18
 DP2329
 DP2329  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP2329  Standards:
 DP2329         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP2329            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP2329  -------------------------------------------------------------------
 DP2329  NETWORK    0.32   0.67           0.14   0.12   0.34     -0.01558940
 DP2329  -------------------------------------------------------------------
 DP2329  Click here for local accuracies and other accuracy information.
 DP2329
 DP2329.This mark is at Baltimore-Washington Int'l Airport (BWI)
 DP2329
 DP2329.The horizontal coordinates were established by GPS observations
 DP2329.and adjusted by the JOHNSON MIRMIRAN AND THOMPSON in April 2014.
 DP2329
 DP2329.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP2329.been affixed to the stable North American tectonic plate. See 
 DP2329.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP2329
 DP2329.The horizontal coordinates are valid at the epoch date displayed above
 DP2329.which is a decimal equivalence of Year/Month/Day.
 DP2329
 DP2329.The orthometric height was determined by GPS observations and a
 DP2329.high-resolution geoid model.
 DP2329
 DP2329.GPS derived orthometric heights for airport stations designated as
 DP2329.PACS or SACS are published to 2 decimal places.  This maintains
 DP2329.centimeter relative accuracy between the PACS and SACS.  It does
 DP2329.not indicate centimeter accuracy relative to other marks which are
 DP2329.part of the published vertical control network.
 DP2329
 DP2329.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP2329.GEOID18 height accuracy estimate available here.
 DP2329
 DP2329.Click photographs - Photos may exist for this station.
 DP2329
 DP2329.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP2329
 DP2329.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP2329
 DP2329.The ellipsoidal height was determined by GPS observations
 DP2329.and is referenced to NAD 83.
 DP2329
 DP2329. The following values were computed from the NAD 83(2011) position.
 DP2329
 DP2329;                    North         East     Units Scale Factor Converg.
 DP2329;SPC MD       -   166,689.195   428,670.498   MT  0.99996280   +0 12 29.6
 DP2329;SPC MD       -   546,879.47  1,406,396.46   sFT  0.99996280   +0 12 29.6
 DP2329;UTM  18      - 4,336,726.166   355,882.354   MT  0.99985574   -1 03 13.8
 DP2329
 DP2329!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP2329!SPC MD       -   0.99999863  x   0.99996280  =   0.99996143
 DP2329!UTM  18      -   0.99999863  x   0.99985574  =   0.99985437
 DP2329
 DP2329_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5588236726(NAD 83)
 DP2329
 DP2329                          SUPERSEDED SURVEY CONTROL
 DP2329
 DP2329.No superseded survey control is available for this station.
 DP2329
 DP2329_MARKER: F = FLANGE-ENCASED ROD
 DP2329_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP2329_STAMPING: BWI K 2012
 DP2329_MARK LOGO: MAA
 DP2329_PROJECTION: FLUSH
 DP2329_MAGNETIC: I = MARKER IS A STEEL ROD
 DP2329_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP2329_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP2329+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2020
 DP2329_ROD/PIPE-DEPTH: 9.8 meters
 DP2329_SLEEVE-DEPTH  : 0.6 meters
 DP2329
 DP2329  HISTORY     - Date     Condition        Report By
 DP2329  HISTORY     - 20130212 MONUMENTED       JMTMD
 DP2329  HISTORY     - 20200311 GOOD             JMTMD
 DP2329
 DP2329                          STATION DESCRIPTION
 DP2329
 DP2329'DESCRIBED BY JMT ENGINEERING 2013 (EAS)
 DP2329'THE STATION IS LOCATED ON THE GROUNDS OF THE BALTIMORE-WASHINGTON
 DP2329'INTERNATIONAL AIRPORT AT THE SOUTHERN END OF THE AIRPORT BETWEEN THE
 DP2329'APPROACH ENDS OF RUNWAY 33L AND RUNWAY 4.  IT IS LOCATED AT THE
 DP2329'NORTHEAST CORNER OF AN ABANDONED PARKING LOT. A BWI BADGE WITH ESCORT
 DP2329'CLEARANCE AND PERMISSION TO OPERATE A VEHICLE ON AIRPORT GROUNDS IS
 DP2329'REQUIRED TO ACCESS THIS MONUMENT.  ACCESS TO THE STATION CAN BE
 DP2329'OBTAINED BY CONTACTING AIRPORT OPERATIONS, AT 410-859-7018 AND AIRPORT
 DP2329'SECURITY AT 410-859-7024 TO GET ACCESS PERMISSION AND KEYS TO GET
 DP2329'THROUGH THREE LOCKED GATES.
 DP2329'
 DP2329'TO REACH THE STATION FROM THE INTERSECTION OF MD 162 AND MD 176.
 DP2329'PROCEED WEST ON MD 176 FOR 1.2 MI (1.9 KM) TO ROAD.  TURN RIGHT INTO
 DP2329'ABANDONED PARKING LOT.  CONTINUE STRAIGHT TO FIRST GATE.  MEANDER
 DP2329'THROUGH PARKING LOT NORTH, EAST, NORTH, THEN WEST TO GATE 49 (APPROACH
 DP2329'END OF RUNWAY 4).  PROCEED THROUGH GATE.  TURN RIGHT ON MACADAM
 DP2329'SERVICE DRIVE AND FOLLOW FENCE LINE NORTHEAST TO SECOND ANGLE BREAK
 DP2329'(NORTHEAST CORNER) IN FENCE LINE.  CONTINUE 69 FT (21.0 M) SOUTHEAST
 DP2329'FROM SECOND ANGLE BREAK AND STOP.  THE STATION IS ON THE LEFT (EAST)
 DP2329'OF THE FENCE LINE IN A GRASS AREA.
 DP2329'
 DP2329'THE STATION IS A STEEL ROD DRIVEN TO REFUSAL OF WHICH THE UPPER 2 FT
 DP2329'(0.6 M) IS ENCASED IN A GREASE FILLED FINNED SLEEVE INSIDE OF A 4 FT
 DP2329'(1.2 M) DEEP SAND FILLED PVC SLEEVE AND CAPPED FLUSH WITH THE GROUND.
 DP2329'THE STATION IS 329 FT (100.3 M) NORTHWEST OF A GRAVEL DRAINAGE AREA.
 DP2329'THE STATION IS SOUTHEAST 75 FT (22.9 M) FROM THE NORTHEAST CORNER OF A
 DP2329'FENCE LINE.  THE STATION IS NORTHEAST 49 FT (14.9 M) PERPENDICULAR
 DP2329'FROM THE FACE OF THE FENCE LINE. THIS STATION HAS BEEN DESIGNATED AS A
 DP2329'SECONDARY AIRPORT CONTROL STATION.
 DP2329
 DP2329                          STATION RECOVERY (2020)
 DP2329
 DP2329'RECOVERY NOTE BY JMT ENGINEERING 2020 (EAS)
 DP2329'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR4999 ***********************************************************************
 DR4999  HT_MOD      -  This is a Height Modernization Survey Station.
 DR4999  DESIGNATION -  BWI L
 DR4999  PID         -  DR4999
 DR4999  STATE/COUNTY-  MD/ANNE ARUNDEL
 DR4999  COUNTRY     -  US
 DR4999  USGS QUAD   -  RELAY (2016)
 DR4999
 DR4999                         *CURRENT SURVEY CONTROL
 DR4999  ______________________________________________________________________
 DR4999* NAD 83(2011) POSITION- 39 10 15.77664(N) 076 41 21.19098(W)   ADJUSTED
 DR4999* NAD 83(2011) ELLIP HT-    11.822 (meters)        (04/16/20)   ADJUSTED
 DR4999* NAD 83(2011) EPOCH   -  2010.00
 DR4999* NAVD 88 ORTHO HEIGHT -    44.47  (meters)      145.9   (feet) GPS OBS
 DR4999  ______________________________________________________________________
 DR4999  GEOID HEIGHT    -        -32.646 (meters)                     GEOID18
 DR4999  NAD 83(2011) X  -  1,139,966.608 (meters)                     COMP
 DR4999  NAD 83(2011) Y  - -4,818,348.526 (meters)                     COMP
 DR4999  NAD 83(2011) Z  -  4,007,064.145 (meters)                     COMP
 DR4999  LAPLACE CORR    -         -5.50  (seconds)                    DEFLEC18
 DR4999
 DR4999  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR4999  Standards:
 DR4999         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR4999            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR4999  -------------------------------------------------------------------
 DR4999  NETWORK    0.31   1.16           0.13   0.12   0.59      0.00943137
 DR4999  -------------------------------------------------------------------
 DR4999  Click here for local accuracies and other accuracy information.
 DR4999
 DR4999.The horizontal coordinates were established by GPS observations
 DR4999.and adjusted by the JMT ENGINEERING in April 2020.
 DR4999
 DR4999.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR4999.been affixed to the stable North American tectonic plate. See 
 DR4999.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR4999
 DR4999.The horizontal coordinates are valid at the epoch date displayed above
 DR4999.which is a decimal equivalence of Year/Month/Day.
 DR4999
 DR4999.The orthometric height was determined by GPS observations and a
 DR4999.high-resolution geoid model using precise GPS observation and
 DR4999.processing techniques.
 DR4999
 DR4999.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR4999.GEOID18 height accuracy estimate available here.
 DR4999
 DR4999.Click photographs - Photos may exist for this station.
 DR4999
 DR4999.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR4999
 DR4999.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR4999
 DR4999.The ellipsoidal height was determined by GPS observations
 DR4999.and is referenced to NAD 83.
 DR4999
 DR4999. The following values were computed from the NAD 83(2011) position.
 DR4999
 DR4999;                    North         East     Units Scale Factor Converg.
 DR4999;SPC MD       -   167,040.477   426,855.795   MT  0.99996309   +0 11 42.2
 DR4999;SPC MD       -   548,031.96  1,400,442.72   sFT  0.99996309   +0 11 42.2
 DR4999;UTM  18      - 4,337,117.294   354,076.017   MT  0.99986219   -1 04 01.8
 DR4999
 DR4999!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR4999!SPC MD       -   0.99999815  x   0.99996309  =   0.99996124
 DR4999!UTM  18      -   0.99999815  x   0.99986219  =   0.99986034
 DR4999
 DR4999_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5407637117(NAD 83)
 DR4999
 DR4999                          SUPERSEDED SURVEY CONTROL
 DR4999
 DR4999.No superseded survey control is available for this station.
 DR4999
 DR4999_MARKER: F = FLANGE-ENCASED ROD
 DR4999_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DR4999_STAMPING: BWI L 2020
 DR4999_MARK LOGO: MAA
 DR4999_PROJECTION: RECESSED 10 CENTIMETERS
 DR4999_MAGNETIC: I = MARKER IS A STEEL ROD
 DR4999_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR4999_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR4999+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2020
 DR4999_ROD/PIPE-DEPTH: 15.8 meters
 DR4999_SLEEVE-DEPTH  : 1 meters
 DR4999
 DR4999  HISTORY     - Date     Condition        Report By
 DR4999  HISTORY     - 20200311 MONUMENTED       JMTMD
 DR4999
 DR4999                          STATION DESCRIPTION
 DR4999
 DR4999'DESCRIBED BY JMT ENGINEERING 2020 (EAS)
 DR4999'THE MARK IS LOCATED ON THE GROUNDS OF THE BALTIMORE-WASHINGTON
 DR4999'INTERNATIONAL THURGOOD MARSHALL AIRPORT SOUTH OF THE APPROACH END OF
 DR4999'RUNWAY 10.  CONTACT AIRPORT OPERATIONS, AT 410-859-7018 FOR ACCESS TO
 DR4999'THE MARK.  A BWI BADGE WITH ESCORT CLEARANCE, PERMISSION TO OPERATE A
 DR4999'VEHICLE ON AIRPORT GROUNDS AND TO UTILIZE POWER GATES IS REQUIRED TO
 DR4999'ACCESS THIS MONUMENT.
 DR4999'
 DR4999'TO REACH THE STATION FROM THE INTERSECTION OF MD 170 AND MATHISON WAY
 DR4999'PROCEED EAST ON MATHISON WAY FOR 0.3 MI (0.5 KM) TO FLASHING LIGHT.
 DR4999'TURN LEFT TOWARDS GATE P (MUST HAVE BADGE FOR BWI).  GO THROUGH GATE P
 DR4999'AND CONTINUE FOR 240 FT (73.2 M).  TURN LEFT INTO GRASS AND FOLLOW
 DR4999'BERM TO TOP OF HILL.
 DR4999'
 DR4999'THE STATION IS A STEEL ROD DRIVEN TO REFUSAL OF WHICH THE UPPER 2 FT
 DR4999'(0.6 M) IS ENCASED IN A GREASE FILLED FINNED SLEEVE INSIDE OF A 4 FT
 DR4999'(1.2 M) DEEP SAND FILLED PVC SLEEVE AND CAPPED FLUSH WITH THE GROUND.
 DR4999'THE STATION IS 65.9 FT (20.1 M) NORTH FROM THE THIRD FENCE POST WEST
 DR4999'OF THE FENCE CORNER, 43.3 FT (13.2 M) NORTHWEST FROM THE FIFTH FENCE
 DR4999'POST NORTH OF A FENCE CORNER, 16.7 FT (5.1 M) SOUTHWEST FROM THE TOE
 DR4999'OF A GRASS BERM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR5000 ***********************************************************************
 DR5000  HT_MOD      -  This is a Height Modernization Survey Station.
 DR5000  DESIGNATION -  BWI M
 DR5000  PID         -  DR5000
 DR5000  STATE/COUNTY-  MD/ANNE ARUNDEL
 DR5000  COUNTRY     -  US
 DR5000  USGS QUAD   -  RELAY (2016)
 DR5000
 DR5000                         *CURRENT SURVEY CONTROL
 DR5000  ______________________________________________________________________
 DR5000* NAD 83(2011) POSITION- 39 11 00.67857(N) 076 41 00.29548(W)   ADJUSTED
 DR5000* NAD 83(2011) ELLIP HT-    -1.347 (meters)        (04/16/20)   ADJUSTED
 DR5000* NAD 83(2011) EPOCH   -  2010.00
 DR5000* NAVD 88 ORTHO HEIGHT -    31.31  (meters)      102.7   (feet) GPS OBS
 DR5000  ______________________________________________________________________
 DR5000  GEOID HEIGHT    -        -32.652 (meters)                     GEOID18
 DR5000  NAD 83(2011) X  -  1,140,250.886 (meters)                     COMP
 DR5000  NAD 83(2011) Y  - -4,817,371.850 (meters)                     COMP
 DR5000  NAD 83(2011) Z  -  4,008,129.248 (meters)                     COMP
 DR5000  LAPLACE CORR    -         -5.50  (seconds)                    DEFLEC18
 DR5000
 DR5000  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR5000  Standards:
 DR5000         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR5000            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR5000  -------------------------------------------------------------------
 DR5000  NETWORK    0.31   1.12           0.13   0.12   0.57      0.04488460
 DR5000  -------------------------------------------------------------------
 DR5000  Click here for local accuracies and other accuracy information.
 DR5000
 DR5000.The horizontal coordinates were established by GPS observations
 DR5000.and adjusted by the JMT ENGINEERING in April 2020.
 DR5000
 DR5000.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR5000.been affixed to the stable North American tectonic plate. See 
 DR5000.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR5000
 DR5000.The horizontal coordinates are valid at the epoch date displayed above
 DR5000.which is a decimal equivalence of Year/Month/Day.
 DR5000
 DR5000.The orthometric height was determined by GPS observations and a
 DR5000.high-resolution geoid model using precise GPS observation and
 DR5000.processing techniques.
 DR5000
 DR5000.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR5000.GEOID18 height accuracy estimate available here.
 DR5000
 DR5000.Click photographs - Photos may exist for this station.
 DR5000
 DR5000.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR5000
 DR5000.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR5000
 DR5000.The ellipsoidal height was determined by GPS observations
 DR5000.and is referenced to NAD 83.
 DR5000
 DR5000. The following values were computed from the NAD 83(2011) position.
 DR5000
 DR5000;                    North         East     Units Scale Factor Converg.
 DR5000;SPC MD       -   168,426.853   427,352.565   MT  0.99996423   +0 11 55.3
 DR5000;SPC MD       -   552,580.43  1,402,072.54   sFT  0.99996423   +0 11 55.3
 DR5000;UTM  18      - 4,338,492.249   354,603.155   MT  0.99986030   -1 03 49.6
 DR5000
 DR5000!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR5000!SPC MD       -   1.00000021  x   0.99996423  =   0.99996444
 DR5000!UTM  18      -   1.00000021  x   0.99986030  =   0.99986051
 DR5000
 DR5000_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5460338492(NAD 83)
 DR5000
 DR5000                          SUPERSEDED SURVEY CONTROL
 DR5000
 DR5000.No superseded survey control is available for this station.
 DR5000
 DR5000_MARKER: F = FLANGE-ENCASED ROD
 DR5000_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DR5000_STAMPING: BWI M 2020
 DR5000_MARK LOGO: MAA
 DR5000_PROJECTION: RECESSED 10 CENTIMETERS
 DR5000_MAGNETIC: I = MARKER IS A STEEL ROD
 DR5000_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR5000_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR5000+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2020
 DR5000_ROD/PIPE-DEPTH: 8.8 meters
 DR5000_SLEEVE-DEPTH  : 1 meters
 DR5000
 DR5000  HISTORY     - Date     Condition        Report By
 DR5000  HISTORY     - 20200311 MONUMENTED       JMTMD
 DR5000
 DR5000                          STATION DESCRIPTION
 DR5000
 DR5000'DESCRIBED BY JMT ENGINEERING 2020 (EAS)
 DR5000'THE MARK IS LOCATED ON THE GROUNDS OF THE BALTIMORE-WASHINGTON
 DR5000'INTERNATIONAL THURGOOD MARSHALL AIRPORT SOUTH OF THE APPROACH END OF
 DR5000'RUNWAY 15R.  CONTACT AIRPORT OPERATIONS, AT 410-859-7018 FOR ACCESS TO
 DR5000'THE MARK.  A BWI BADGE WITH ESCORT CLEARANCE, PERMISSION TO OPERATE A
 DR5000'VEHICLE ON AIRPORT GROUNDS AND TO UTILIZE POWER GATES IS REQUIRED TO
 DR5000'ACCESS THIS MONUMENT.
 DR5000'
 DR5000'TO REACH THE STATION FROM THE INTERSECTION OF MD 170 (AVIATION BLVD.)
 DR5000'AND TERMINAL ROAD.  CONTINUE ON TERMINAL FOR 442 FT (134.7 M) TO ELM
 DR5000'ROAD (FIRST LIGHT) TURN LEFT ONTO ELM ROAD AND CONTINUE FOR 865 FT
 DR5000'(263.7 M) TO AIR CARGO SERVICE ROAD.  TURN LEFT AND CONTINUE 813 FT
 DR5000'(247.8 M) TO SPRING LANE.  TURN LEFT TO GATE G (MUST HAVE BWI BADGE).
 DR5000'GO THROUGH GATE G AND MAKE FIRST RIGHT ONTO SERVICE ROAD AND CONTINUE
 DR5000'ON SERVICE ROAD FOR 2.78 MI (4.47 KM) PAST THE APPROACH END OF RUNWAY
 DR5000'TO A CORNER OF METAL FENCING FOR NORTHROP GRUMMAN AIRPLANE RAMP.  THE
 DR5000'STATION WILL BE ON THE RIGHT ALONG THE TOP OF A BERM NEAR A RETAINING
 DR5000'WALL.
 DR5000'
 DR5000'THE STATION IS A STEEL ROD DRIVEN TO REFUSAL OF WHICH THE UPPER 2 FT
 DR5000'(0.6 M) IS ENCASED IN A GREASE FILLED FINNED SLEEVE INSIDE OF A 4 FT
 DR5000'(1.2 M) DEEP SAND FILLED PVC SLEEVE AND CAPPED FLUSH WITH THE GROUND.
 DR5000'THE STATION IS 140.4 FT (42.8 M) NORTHEAST FROM THE EIGHTH FENCE POST
 DR5000'SOUTH OF THE FENCE CORNER, 136.2 FT (41.5 M) NORTHEAST FROM THE FENCE
 DR5000'CORNER, 18.4 FEET NORTH FROM THE NORTHERN MOST CORNER OF A RIP-RAP
 DR5000'SWALE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6290 ***********************************************************************
 JV6290  FBN         -  This is a Federal Base Network Control Station.
 JV6290  DESIGNATION -  BYNUM
 JV6290  PID         -  JV6290
 JV6290  STATE/COUNTY-  MD/HARFORD
 JV6290  COUNTRY     -  US
 JV6290  USGS QUAD   -  BEL AIR (2016)
 JV6290
 JV6290                         *CURRENT SURVEY CONTROL
 JV6290  ______________________________________________________________________
 JV6290* NAD 83(2011) POSITION- 39 33 30.12569(N) 076 22 12.38306(W)   ADJUSTED
 JV6290* NAD 83(2011) ELLIP HT-    99.339 (meters)        (06/27/12)   ADJUSTED
 JV6290* NAD 83(2011) EPOCH   -  2010.00
 JV6290* NAVD 88 ORTHO HEIGHT -   132.034 (meters)      433.18  (feet) ADJUSTED
 JV6290  ______________________________________________________________________
 JV6290  GEOID HEIGHT    -        -32.693 (meters)                     GEOID18
 JV6290  NAD 83(2011) X  -  1,160,373.841 (meters)                     COMP
 JV6290  NAD 83(2011) Y  - -4,785,484.688 (meters)                     COMP
 JV6290  NAD 83(2011) Z  -  4,040,365.097 (meters)                     COMP
 JV6290  LAPLACE CORR    -         -2.59  (seconds)                    DEFLEC18
 JV6290  DYNAMIC HEIGHT  -        131.968 (meters)      432.97  (feet) COMP
 JV6290  MODELED GRAVITY -    980,120.3   (mgal)                       NAVD 88
 JV6290
 JV6290  VERT ORDER      -  FIRST     CLASS II
 JV6290
 JV6290  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6290  Standards:
 JV6290         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6290            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6290  -------------------------------------------------------------------
 JV6290  NETWORK    0.70   1.29           0.31   0.26   0.66     -0.02572418
 JV6290  -------------------------------------------------------------------
 JV6290  Click here for local accuracies and other accuracy information.
 JV6290
 JV6290.The horizontal coordinates were established by GPS observations
 JV6290.and adjusted by the National Geodetic Survey in June 2012.
 JV6290
 JV6290.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6290.been affixed to the stable North American tectonic plate. See 
 JV6290.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6290
 JV6290.The horizontal coordinates are valid at the epoch date displayed above
 JV6290.which is a decimal equivalence of Year/Month/Day.
 JV6290
 JV6290.The orthometric height was determined by differential leveling and
 JV6290.adjusted by the NATIONAL GEODETIC SURVEY
 JV6290.in June 1991.
 JV6290
 JV6290.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6290.GEOID18 height accuracy estimate available here.
 JV6290
 JV6290.Click photographs - Photos may exist for this station.
 JV6290
 JV6290.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6290
 JV6290.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6290
 JV6290.The ellipsoidal height was determined by GPS observations
 JV6290.and is referenced to NAD 83.
 JV6290
 JV6290.The dynamic height is computed by dividing the NAVD 88
 JV6290.geopotential number by the normal gravity value computed on the
 JV6290.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6290.degrees latitude (g = 980.6199 gals.).
 JV6290
 JV6290.The modeled gravity was interpolated from observed gravity values.
 JV6290
 JV6290. The following values were computed from the NAD 83(2011) position.
 JV6290
 JV6290;                    North         East     Units Scale Factor Converg.
 JV6290;SPC MD       -   210,182.142   454,134.651   MT  1.00002075   +0 23 43.2
 JV6290;SPC MD       -   689,572.58  1,489,940.10   sFT  1.00002075   +0 23 43.2
 JV6290;UTM  18      - 4,379,638.651   382,296.050   MT  0.99977057   -0 52 21.6
 JV6290
 JV6290!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6290!SPC MD       -   0.99998442  x   1.00002075  =   1.00000517
 JV6290!UTM  18      -   0.99998442  x   0.99977057  =   0.99975499
 JV6290
 JV6290_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8229679638(NAD 83)
 JV6290
 JV6290                          SUPERSEDED SURVEY CONTROL
 JV6290
 JV6290  NAD 83(2007)-  39 33 30.12584(N)    076 22 12.38377(W) AD(2002.00) 0
 JV6290  ELLIP H (02/10/07)   99.361  (m)                       GP(2002.00)    
 JV6290  NAD 83(1991)-  39 33 30.12597(N)    076 22 12.38400(W) AD(       ) A
 JV6290  ELLIP H (02/12/02)   99.364  (m)                       GP(       ) 4 1
 JV6290  NAD 83(1991)-  39 33 30.12592(N)    076 22 12.38289(W) AD(       ) 1
 JV6290  ELLIP H (01/27/92)   99.328  (m)                       GP(       ) 4 1
 JV6290  NAD 83(1986)-  39 33 30.11911(N)    076 22 12.38994(W) AD(       ) 1
 JV6290  NAVD 88             132.03   (m)          433.2    (f) LEVELING    3  
 JV6290  NGVD 29             132.28   (m)          434.0    (f) LEVELING    3  
 JV6290
 JV6290.Superseded values are not recommended for survey control.
 JV6290
 JV6290.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6290.See file dsdata.pdf to determine how the superseded data were derived.
 JV6290
 JV6290_MARKER: DD = SURVEY DISK
 JV6290_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6290_STAMPING: 49 BYNUM 1989
 JV6290_MARK LOGO: MD-025
 JV6290_PROJECTION: RECESSED 3 CENTIMETERS
 JV6290_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6290_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6290+STABILITY: SURFACE MOTION
 JV6290_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6290+SATELLITE: SATELLITE OBSERVATIONS - September 17, 2019
 JV6290
 JV6290  HISTORY     - Date     Condition        Report By
 JV6290  HISTORY     - 1989     MONUMENTED       RDA
 JV6290  HISTORY     - 19931209 GOOD             GEOMET
 JV6290  HISTORY     - 19991226 POOR             USPSQD
 JV6290  HISTORY     - 20000410 GOOD             MDSHA
 JV6290  HISTORY     - 20070311 GOOD             NAGEL
 JV6290  HISTORY     - 20190917 GOOD             MDSHA
 JV6290
 JV6290                          STATION DESCRIPTION
 JV6290
 JV6290'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6290'THE STATION IS LOCATED IN CENTRAL HARFORD COUNTY, MARYLAND ABOUT 2
 JV6290'MILES NORTHWEST OF THE VILLAGE OF BEL AIR.  TO REACH THE STATION FROM
 JV6290'THE INTERSECTION OF CENTER OF THE FEDERAL HIGHWAY 1 OVERPASS AND
 JV6290'STATE HIGHWAY 24 PROCEED NORTH ALONG HIGHWAY 24 0.28 MILES TO ITS
 JV6290'INTERSECTION WITH RED PUMP ROAD ON THE LEFT AND BYNUM ROAD ON THE
 JV6290'RIGHT AND THE STATION ON THE RIGHT IN THE NORTHEAST CORNER OF THE
 JV6290'INTERSECTION.  THE STATION IS A STANDARD HARFORD COUNTY STATION DISC
 JV6290'SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 49 BYNUM 1989.  THE
 JV6290'STATION IS 29.2 FEET NORTHWEST OF THE CENTERLINE OF BYNUM ROAD, 28.0
 JV6290'FEET SOUTHWEST OF THE CENTERLINE OF THE SHELL GAS STATION ENTRANCE,
 JV6290'AND 44.5 FEET EAST OF THE STOP LIGHT POLE.
 JV6290
 JV6290                          STATION RECOVERY (1993)
 JV6290
 JV6290'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6290'RECOVERED IN GOOD CONDITION.
 JV6290
 JV6290                          STATION RECOVERY (1999)
 JV6290
 JV6290'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6290'MARK RECOVERED IN POOR CONDITION.
 JV6290
 JV6290                          STATION RECOVERY (2000)
 JV6290
 JV6290'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6290'RECOVERED AS DESCRIBED.
 JV6290
 JV6290                          STATION RECOVERY (2007)
 JV6290
 JV6290'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2007 (LWN)
 JV6290'RECOVERED IN GOOD CONDITION.
 JV6290
 JV6290                          STATION RECOVERY (2019)
 JV6290
 JV6290'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JL)
 JV6290'THE STATION IS 29.2 FT (8.9 M) NORTHWEST OF THE CENTERLINE OF BYNUM
 JV6290'RD, 54.2 FT (16.5 M) SOUTH EAST OF TRAFFIC SIGNAL POLE, 14.3 FT (4.4
 JV6290'M) FROM SOUTHWEST CORNER ON INLET, 11.0 FT (3.4 M) NORTH EAST OF FIRE
 JV6290'HYDRANT AND 44.6 FT (13.6 M) FROM METAL POLE WITH PEDESTRIAN SIGNAL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6724 ***********************************************************************
 JV6724  DESIGNATION -  BYNUM AZ MK
 JV6724  PID         -  JV6724
 JV6724  STATE/COUNTY-  MD/HARFORD
 JV6724  COUNTRY     -  US
 JV6724  USGS QUAD   -  BEL AIR (2016)
 JV6724
 JV6724                         *CURRENT SURVEY CONTROL
 JV6724  ______________________________________________________________________
 JV6724* NAD 83(1991) POSITION- 39 33 19.62317(N) 076 22 27.24831(W)   NO CHECK
 JV6724* NAVD 88 ORTHO HEIGHT -   138.    (meters)      453.    (feet) VERTCON3
 JV6724  ______________________________________________________________________
 JV6724  GEOID HEIGHT    -        -32.692 (meters)                     GEOID18
 JV6724  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 JV6724  HORZ ORDER      -  SECOND
 JV6724
 JV6724.The horizontal coordinates were established by classical geodetic methods
 JV6724.and adjusted by the National Geodetic Survey in January 1992.
 JV6724
 JV6724.No horizontal observational check was made to the station.
 JV6724
 JV6724.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6724.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6724
 JV6724.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6724.GEOID18 height accuracy estimate available here.
 JV6724
 JV6724.Click photographs - Photos may exist for this station.
 JV6724
 JV6724.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6724
 JV6724. The following values were computed from the NAD 83(1991) position.
 JV6724
 JV6724;                    North         East     Units Scale Factor Converg.
 JV6724;SPC MD       -   209,855.799   453,782.000   MT  1.00002015   +0 23 33.9
 JV6724;SPC MD       -   688,501.90  1,488,783.11   sFT  1.00002015   +0 23 33.9
 JV6724;UTM  18      - 4,379,320.270   381,936.353   MT  0.99977162   -0 52 30.9
 JV6724
 JV6724!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6724!SPC MD       -   0.99998343  x   1.00002015  =   1.00000358
 JV6724!UTM  18      -   0.99998343  x   0.99977162  =   0.99975505
 JV6724
 JV6724_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8193679320(NAD 83)
 JV6724
 JV6724                          SUPERSEDED SURVEY CONTROL
 JV6724
 JV6724  NAD 83(1986)-  39 33 19.61648(N)    076 22 27.25547(W) AD(       ) 2
 JV6724  NGVD 29 (06/18/91)  139.     (m)          456.     (f) VERT ANG       
 JV6724
 JV6724.Superseded values are not recommended for survey control.
 JV6724
 JV6724.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6724.See file dsdata.pdf to determine how the superseded data were derived.
 JV6724
 JV6724_MARKER: DZ = AZIMUTH MARK DISK
 JV6724_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6724_STAMPING: 49 BYNUM 1989
 JV6724_MARK LOGO: MD-025
 JV6724_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6724_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6724+STABILITY: SURFACE MOTION
 JV6724_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6724+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6724
 JV6724  HISTORY     - Date     Condition        Report By
 JV6724  HISTORY     - 1989     MONUMENTED       RDA
 JV6724  HISTORY     - 19991226 GOOD             USPSQD
 JV6724  HISTORY     - 20070311 MARK NOT FOUND   NAGEL
 JV6724
 JV6724                          STATION DESCRIPTION
 JV6724
 JV6724'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6724'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTHWEST ALONG RED
 JV6724'PUMP ROAD 0.3 MILES TO THE MARK ON THE RIGHT.
 JV6724'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6724'ABOUT 1 INCH BELOW GROUND STAMPED 49 BYNUM 1989.  THE MARK IS 26.0
 JV6724'FEET NORTHWEST OF THE CENTERLINE OF RED PUMP ROAD, 44.8 FEET SOUTHWEST
 JV6724'OF THE SOUTHEAST CORNER OF RESIDENCE 206 RED PUMP ROAD, 32.0 FEET
 JV6724'NORTHEAST OF THE CENTERLINE OF A PRIVATE DRIVE AND 1576.40 FEET FROM
 JV6724'THE STATION.
 JV6724
 JV6724                          STATION RECOVERY (1999)
 JV6724
 JV6724'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6724'RECOVERED IN GOOD CONDITION.
 JV6724
 JV6724                          STATION RECOVERY (2007)
 JV6724
 JV6724'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2007 (LWN)
 JV6724'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2580 ***********************************************************************
 HU2580  CBN         -  This is a Cooperative Base Network Control Station.
 HU2580  DESIGNATION -  BYPASS
 HU2580  PID         -  HU2580
 HU2580  STATE/COUNTY-  MD/CAROLINE
 HU2580  COUNTRY     -  US
 HU2580  USGS QUAD   -  DENTON (2017)
 HU2580
 HU2580                         *CURRENT SURVEY CONTROL
 HU2580  ______________________________________________________________________
 HU2580* NAD 83(2011) POSITION- 38 53 41.35028(N) 075 49 07.01986(W)   ADJUSTED
 HU2580* NAD 83(2011) ELLIP HT-   -13.864 (meters)        (06/27/12)   ADJUSTED
 HU2580* NAD 83(2011) EPOCH   -  2010.00
 HU2580* NAVD 88 ORTHO HEIGHT -    20.978 (meters)       68.83  (feet) ADJUSTED
 HU2580  ______________________________________________________________________
 HU2580  GEOID HEIGHT    -        -34.841 (meters)                     GEOID18
 HU2580  NAD 83(2011) X  -  1,217,772.965 (meters)                     COMP
 HU2580  NAD 83(2011) Y  - -4,819,175.774 (meters)                     COMP
 HU2580  NAD 83(2011) Z  -  3,983,227.190 (meters)                     COMP
 HU2580  LAPLACE CORR    -         -3.25  (seconds)                    DEFLEC18
 HU2580  DYNAMIC HEIGHT  -         20.966 (meters)       68.79  (feet) COMP
 HU2580  MODELED GRAVITY -    980,042.0   (mgal)                       NAVD 88
 HU2580
 HU2580  VERT ORDER      -  SECOND    CLASS I
 HU2580
 HU2580  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2580  Standards:
 HU2580         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2580            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2580  -------------------------------------------------------------------
 HU2580  NETWORK    0.36   0.71           0.16   0.13   0.36     -0.02560222
 HU2580  -------------------------------------------------------------------
 HU2580  Click here for local accuracies and other accuracy information.
 HU2580
 HU2580.The horizontal coordinates were established by GPS observations
 HU2580.and adjusted by the National Geodetic Survey in June 2012.
 HU2580
 HU2580.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2580.been affixed to the stable North American tectonic plate. See 
 HU2580.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2580
 HU2580.The horizontal coordinates are valid at the epoch date displayed above
 HU2580.which is a decimal equivalence of Year/Month/Day.
 HU2580
 HU2580.The orthometric height was determined by differential leveling and
 HU2580.adjusted by the NATIONAL GEODETIC SURVEY
 HU2580.in July 2021.
 HU2580
 HU2580.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2580.GEOID18 height accuracy estimate available here.
 HU2580
 HU2580.Click photographs - Photos may exist for this station.
 HU2580
 HU2580.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2580
 HU2580.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2580
 HU2580.The ellipsoidal height was determined by GPS observations
 HU2580.and is referenced to NAD 83.
 HU2580
 HU2580.The dynamic height is computed by dividing the NAVD 88
 HU2580.geopotential number by the normal gravity value computed on the
 HU2580.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2580.degrees latitude (g = 980.6199 gals.).
 HU2580
 HU2580.The modeled gravity was interpolated from observed gravity values.
 HU2580
 HU2580. The following values were computed from the NAD 83(2011) position.
 HU2580
 HU2580;                    North         East     Units Scale Factor Converg.
 HU2580;SPC MD       -   136,993.359   502,482.341   MT  0.99994990   +0 44 29.3
 HU2580;SPC MD       -   449,452.38  1,648,560.81   sFT  0.99994990   +0 44 29.3
 HU2580;UTM  18      - 4,305,423.141   429,009.206   MT  0.99966206   -0 30 50.5
 HU2580
 HU2580!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2580!SPC MD       -   1.00000218  x   0.99994990  =   0.99995208
 HU2580!UTM  18      -   1.00000218  x   0.99966206  =   0.99966423
 HU2580
 HU2580_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2900905423(NAD 83)
 HU2580
 HU2580                          SUPERSEDED SURVEY CONTROL
 HU2580
 HU2580  NAD 83(2007)-  38 53 41.35051(N)    075 49 07.02058(W) AD(2002.00) 0
 HU2580  ELLIP H (02/10/07)  -13.833  (m)                       GP(2002.00)    
 HU2580  ELLIP H (02/12/02)  -13.837  (m)                       GP(       ) 4 1
 HU2580  NAD 83(1991)-  38 53 41.35023(N)    075 49 07.02033(W) AD(       ) B
 HU2580  ELLIP H (10/23/91)  -13.680  (m)                       GP(       ) 4 1
 HU2580  NAVD 88 (12/07/04)   20.990  (m)           68.86   (f) SUPERSEDED  2 1
 HU2580  NAVD 88              21.01   (m)           68.9    (f) LEVELING    3  
 HU2580  NAVD 88 (04/28/95)   21.006  (m)           68.92   (f) SUPERSEDED  2 2
 HU2580  NGVD 29              21.23   (m)           69.7    (f) LEVELING    3  
 HU2580
 HU2580.Superseded values are not recommended for survey control.
 HU2580
 HU2580.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2580.See file dsdata.pdf to determine how the superseded data were derived.
 HU2580
 HU2580_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2580_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2580_STAMPING: BYPASS 1990
 HU2580_MARK LOGO: NGS
 HU2580_PROJECTION: FLUSH
 HU2580_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2580_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2580+STABILITY: SURFACE MOTION
 HU2580_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2580+SATELLITE: SATELLITE OBSERVATIONS - August 02, 2023
 HU2580
 HU2580  HISTORY     - Date     Condition        Report By
 HU2580  HISTORY     - 1990     MONUMENTED       NGS
 HU2580  HISTORY     - 19901029 GOOD             NGS
 HU2580  HISTORY     - 19910101 GOOD             NGS
 HU2580  HISTORY     - 19960319 GOOD             MCCRON
 HU2580  HISTORY     - 20000327 GOOD             MDSHA
 HU2580  HISTORY     - 20020926 GOOD             MDSHA
 HU2580  HISTORY     - 20110420 GOOD             JMTMD
 HU2580  HISTORY     - 20120702 GOOD             MDSHA
 HU2580  HISTORY     - 20210408 GOOD             MDSHA
 HU2580  HISTORY     - 20230802 GOOD             MDSHA
 HU2580
 HU2580                          STATION DESCRIPTION
 HU2580
 HU2580'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2580'THE STATION IS LOCATED ABOUT 1.6 KM (1.0 MI) NORTHEAST OF DENTON, 8.8
 HU2580'KM (5.5 MI) SOUTH OF GREENSBORO, AND 23.2 KM (14.4 MI) EAST SOUTHEAST
 HU2580'OF WYE MILLS, IN THE MEDIAN OF STATE HIGHWAY 404, JUST EAST OF STATE
 HU2580'HIGHWAY 313.THE PROPERTY IS OWNED BY THE MARYLAND STATE HIGHWAY
 HU2580'ADMINISTRATION.
 HU2580'TO REACH THE STATION FROM THE INTERSECTION OF U.S. ROUTE 50 AND STATE
 HU2580'HIGHWAY 404, 1.0 MI (1.6 KM) EAST OF WYE MILLS, GO EAST ON STATE
 HU2580'HIGHWAY 404 FOR 21.76 KM (13.52 MI) TO THE STATE HIGHWAY 313 OVERPASS
 HU2580'AT DENTON AND THE STATION ON THE LEFT.
 HU2580'THE STATION MARK IS A STANDARD NGS DISK SET IN THE TOP OF A 0.3 M
 HU2580'(1.0 FT) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF
 HU2580'THE GROUND. IT IS 11.89 M (39.01 FT) SOUTHWEST OF THE WESTBOUND LANE
 HU2580'OF STATE HIGHWAY 404, 12.04 M (39.50 FT) NORTHEAST OF THE EASTBOUND
 HU2580'LANE OF STATE HIGHWAY 404, 34.44 M (112.99 FT) SOUTH OF THE SOUTH
 HU2580'CORNER OF THE PARAPET WALL OF THE BRIDGE FOR THE WESTBOUND LANE OF
 HU2580'STATE HIGHWAY 404, AND 37.80 M (124.02 FT) EAST OF THE EAST CORNER OF
 HU2580'THE PARAPET WALL OF THE BRIDGE FOR THE EASTBOUND LANE OF STATE
 HU2580'HIGHWAY 404.
 HU2580
 HU2580                          STATION RECOVERY (1990)
 HU2580
 HU2580'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU2580'IN DENTON, AT THE INTERSECTION OF STATE HIGHWAYS 404 BYPASS AND 313,
 HU2580'IN THE MEDIAN OF HIGHWAY 404 BYPASS, 61.5 M (201.8 FT) EAST OF THE
 HU2580'CENTER OF STATE HIGHWAY 313, 37.8 M (124.0 FT) EAST-NORTHEAST OF THE
 HU2580'EAST END OF THE NORTH PARAPET WALL OF THE EASTBOUND HIGHWAY 404
 HU2580'OVERPASS OF HIGHWAY 313, 34.4 M (112.9 FT) EAST-SOUTHEAST OF THE EAST
 HU2580'END OF THE SOUTH PARAPET WALL OF THE WESTBOUND HIGHWAY 404 OVERPASS
 HU2580'OF HIGHWAY 313, 12.0 M (39.4 FT) NORTH OF THE CENTERLINE OF THE
 HU2580'EASTBOUND LANES OF HIGHWAY 404, 11.9 M (39.0 FT) SOUTH OF THE
 HU2580'CENTERLINE OF THE WESTBOUND LANES OF HIGHWAY 404, 4.1 M (13.5 FT)
 HU2580'SOUTHEAST OF THE EAST END OF A GUARDRAIL, 0.3 M (1.0 FT) BELOW THE
 HU2580'LEVEL OF HIGHWAY 404, AND THE MONUMENT IS FLUSH WITH THE GROUND
 HU2580'SURFACE.
 HU2580
 HU2580                          STATION RECOVERY (1991)
 HU2580
 HU2580'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU2580'STATION IS LOCATED ABOUT 8 KM (5.0 MI) WEST OF THE MARYLAND-DELAWARE
 HU2580'STATE LINE, 1.6 KM (1.0 MI) NORTHEAST OF DENTON, ON THE SOUTHEAST
 HU2580'SIDE OF THE OVERPASS AT JUNCTION OF STATE HIGHWAYS 404 BYPASS AND
 HU2580'313, AND IN THE MEDIAN OF HIGHWAY 404.  OWNERSHIP--STATE HIGHWAY
 HU2580'ADMINISTRATION.
 HU2580'STATION CAN ONLY BE REACHED BY APPROACHING ALONG HIGHWAY 404.
 HU2580'STATION MARK IS SET IN THE TOP OF A 30-CM ROUND CONCRETE POST 2 CM
 HU2580'BELOW GROUND.  IT IS 34.5 M (113.2 FT) SOUTHEAST OF THE EAST END OF
 HU2580'THE WESTBOUND OVERPASS ABUTMENT, 37.9 M (124.3 FT) EAST-SOUTHEAST OF
 HU2580'THE SOUTH END OF THE EASTBOUND ABUTMENT, 4.2 M (13.8 FT) SOUTHEAST OF
 HU2580'A FIBERGLASS WITNESS POST SET IN THE CURL AT THE END OF THE WESTBOUND
 HU2580'GUARDRAIL, 12.0 M (39.4 FT) NORTHEAST OF THE CENTER OF THE EASTBOUND
 HU2580'LANES, AND 11.9 M (39.0 FT) SOUTHWEST OF THE CENTER OF THE WESTBOUND
 HU2580'LANES.
 HU2580'DESCRIBED BY G.R.HEID.
 HU2580
 HU2580                          STATION RECOVERY (1996)
 HU2580
 HU2580'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 HU2580'RECOVERED AS DESCRIBED.
 HU2580
 HU2580                          STATION RECOVERY (2000)
 HU2580
 HU2580'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HU2580'RECOVERED AS DESCRIBED.
 HU2580
 HU2580                          STATION RECOVERY (2002)
 HU2580
 HU2580'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2580'RECOVERED AS DESCRIBED.
 HU2580
 HU2580                          STATION RECOVERY (2011)
 HU2580
 HU2580'RECOVERY NOTE BY JMT ENGINEERING 2011 (JLS)
 HU2580'CHECKED WITH RTK-NET (CARON EAST)
 HU2580'N +0.01, E +0.07, Z -0.16
 HU2580
 HU2580                          STATION RECOVERY (2012)
 HU2580
 HU2580'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2012 (WAC)
 HU2580'RECOVERED IN GOOD CONDITION.
 HU2580
 HU2580                          STATION RECOVERY (2021)
 HU2580
 HU2580'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 HU2580'RECOVERED AS DESCRIBED.
 HU2580
 HU2580                          STATION RECOVERY (2023)
 HU2580
 HU2580'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 HU2580'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5753 ***********************************************************************
 JV5753  DESIGNATION -  BYRD
 JV5753  PID         -  JV5753
 JV5753  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5753  COUNTRY     -  US
 JV5753  USGS QUAD   -  ROUND BAY (2016)
 JV5753
 JV5753                         *CURRENT SURVEY CONTROL
 JV5753  ______________________________________________________________________
 JV5753* NAD 83(1991) POSITION- 39 02 53.54266(N) 076 31 51.31397(W)   ADJUSTED
 JV5753* NAVD 88 ORTHO HEIGHT -    37.    (meters)      121.    (feet) SCALED
 JV5753  ______________________________________________________________________
 JV5753  GEOID HEIGHT    -        -33.157 (meters)                     GEOID18
 JV5753  LAPLACE CORR    -         -3.99  (seconds)                    DEFLEC18
 JV5753  HORZ ORDER      -  SECOND
 JV5753
 JV5753.The horizontal coordinates were established by classical geodetic methods
 JV5753.and adjusted by the National Geodetic Survey in January 1992.
 JV5753
 JV5753.The orthometric height was scaled from a topographic map.
 JV5753
 JV5753.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5753.GEOID18 height accuracy estimate available here.
 JV5753
 JV5753.Click photographs - Photos may exist for this station.
 JV5753
 JV5753.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5753
 JV5753. The following values were computed from the NAD 83(1991) position.
 JV5753
 JV5753;                    North         East     Units Scale Factor Converg.
 JV5753;SPC MD       -   153,461.948   440,605.047   MT  0.99995436   +0 17 39.9
 JV5753;SPC MD       -   503,483.07  1,445,551.73   sFT  0.99995436   +0 17 39.9
 JV5753;UTM  18      - 4,323,241.239   367,521.617   MT  0.99981611   -0 57 52.5
 JV5753
 JV5753!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5753!SPC MD       -   0.99999944  x   0.99995436  =   0.99995380
 JV5753!UTM  18      -   0.99999944  x   0.99981611  =   0.99981555
 JV5753
 JV5753:                Primary Azimuth Mark                     Grid Az
 JV5753:SPC MD       -  BYRD RM 2 AZIMUTH                        126 34 16.6
 JV5753:UTM  18      -  BYRD RM 2 AZIMUTH                        127 49 49.0
 JV5753
 JV5753_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6752123241(NAD 83)
 JV5753
 JV5753|---------------------------------------------------------------------|
 JV5753| PID    Reference Object                     Distance      Geod. Az  |
 JV5753|                                                           dddmmss.s |
 JV5753| CB1037 BYRD RM 1                            18.888 METERS 04314     |
 JV5753| CB1038 BYRD RM 2 AZIMUTH                                  1265156.5 |
 JV5753| JV5794 RIDGEWAY TANK                       APPROX. 4.1 KM 1484515.4 |
 JV5753| CB1039 BYRD RM 3                            24.485 METERS 15830     |
 JV5753| JV5821 NEW YORK WASHINGTON AWY BCN 58      APPROX.15.0 KM 3164026.8 |
 JV5753|---------------------------------------------------------------------|
 JV5753
 JV5753                          SUPERSEDED SURVEY CONTROL
 JV5753
 JV5753  NAD 83(1986)-  39 02 53.53927(N)    076 31 51.32418(W) AD(       ) 2
 JV5753  NAD 27      -  39 02 53.14087(N)    076 31 52.45755(W) AD(       ) 2
 JV5753
 JV5753.Superseded values are not recommended for survey control.
 JV5753
 JV5753.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5753.See file dsdata.pdf to determine how the superseded data were derived.
 JV5753
 JV5753_MARKER: DS = TRIANGULATION STATION DISK
 JV5753_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5753
 JV5753  HISTORY     - Date     Condition        Report By
 JV5753  HISTORY     - 1933     MONUMENTED       CGS
 JV5753  HISTORY     - 1961     GOOD             CGS
 JV5753
 JV5753                          STATION DESCRIPTION
 JV5753
 JV5753'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5753'THIS IS A SECOND-ORDER STATION LOCATED ON THE PROPERTY OF MRS. ANNE
 JV5753'BYRD, IN SEVERN HEIGHTS, ON A BLUFF ON THE E SHORE OF SEVERN RIVER,
 JV5753'52.50 FEET ESE OF THE STEEL LADDER LEG (NE) OF A WOOD WATER TANK,
 JV5753'73 YARDS (APPROXIMATELY) NE OF A TWO-STORY DWELLING HOUSE ON THE
 JV5753'BANK OF SEVERN RIVER, 96 FEET N OF CENTER LINE OF DRIVE TO HOUSE,
 JV5753'AND 108.5 FEET N OF A TELEPHONE POLE ON S SIDE OF DRIVE.
 JV5753'STATION IS JUST ABOVE RINGOLD COVE AND LANDING CAN BE MADE JUST
 JV5753'BELOW STATION.  TRUCKS CAN BE DRIVEN DIRECTLY TO THE
 JV5753'STATION.
 JV5753'
 JV5753'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE DISKS
 JV5753'SET IN CONCRETE AS DESCRIBED.
 JV5753'
 JV5753'REFERENCE MARK NO.1 IS 14 FEET S OF A LEANING PHONE POLE, AND 4 FEET
 JV5753'E OF PHONE WIRES BETWEEN POLES.  THE MARK PROJECTS 4 INCHES ABOVE
 JV5753'GROUND.
 JV5753'
 JV5753'REFERENCE MARK NO.2, THE AZIMUTH MARK, IS AT THE SE CORNER OF A
 JV5753'LARGE FIELD, 3 FEET W OF A HEDGE, 12 FEET NE OF A 10-INCH SPRUCE,
 JV5753'28 FEET W OF A PHONE POLE AND 35 FEET W OF CENTER LINE OF N-S DIRT
 JV5753'ROAD.
 JV5753'
 JV5753'REFERENCE MARK NO.3 IS 1-1/2 FEET N OF A HEDGE ALONG N SIDE OF
 JV5753'DRIVE TO MRS. BYRDS HOUSE, 12 FEET N OF CENTER LINE OF DRIVE, 65
 JV5753'FEET E OF AN 8-INCH PINE ON N SIDE OF DRIVE, AND 18 FEET SW OF
 JV5753'A TWIN 4-INCH PEACH TREE.  THE MARK PROJECTS 2 INCHES ABOVE
 JV5753'GROUND.
 JV5753'
 JV5753'TO REACH STATION GO TO JONES RAILROAD STATION ON WASHINGTON,
 JV5753'BALTIMORE AND ANNAPOLIS SHORT LINE RAILROAD AND ON HIGHWAY 2, 5.2
 JV5753'MILES N OF THE E SIDE OF SEVERN RIVER AT ANNAPOLIS.  FROM
 JV5753'JONES STATION GO W 0.4 MILE ON DIRT ROAD TO N-S DIRT ROAD, BEAR S
 JV5753'0.4 MILE TO ENTRANCE TO MRS. ANNE BYRDS RESIDENCE, TURN W
 JV5753'INTO THIS DRIVE AND GO 0.1 MILE TO STATION ON RIGHT OF DRIVE.
 JV5753'THE STATION MARK PROJECTS 8 INCHES ABOVE GROUND.
 JV5753'
 JV5753'HEIGHT OF LIGHT ABOVE STATION MARK - 30 METERS.
 JV5753
 JV5753                          STATION RECOVERY (1961)
 JV5753
 JV5753'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5753'STATION AND REFERENCE MARK NO. 3 WERE RECOVERED IN GOOD CONDITION.
 JV5753'THE DISTANCE WAS CHECKED AND FOUND TO BE CORRECT.  REFERENCE MARKS
 JV5753'NO. 1 AND NO. 2 WERE SEARCHED FOR BUT COULD NOT BE FOUND.  BRUSH
 JV5753'AND SNOW MADE SEARCH DIFFICULT.  THE DESCRIPTION BY R.H.D. IS
 JV5753'ADEQUATE WITH THE ADDITION THAT THE LAND IS NOW OWNED BY DR. HAHN
 JV5753'AND THE AREA IS COVERED WITH BRUSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3222 ***********************************************************************
 JV3222  DESIGNATION -  C
 JV3222  PID         -  JV3222
 JV3222  STATE/COUNTY-  MD/WASHINGTON
 JV3222  COUNTRY     -  US
 JV3222  USGS QUAD   -  HEDGESVILLE (2016)
 JV3222
 JV3222                         *CURRENT SURVEY CONTROL
 JV3222  ______________________________________________________________________
 JV3222* NAD 83(1986) POSITION- 39 36 25.2    (N) 077 55 19.4    (W)   HD_HELD2
 JV3222* NAVD 88 ORTHO HEIGHT -   113.14  (+/-2cm)      371.2   (feet) VERTCON3
 JV3222  ______________________________________________________________________
 JV3222  GEOID HEIGHT    -        -34.295 (meters)                     GEOID18
 JV3222  VERT ORDER      -  ? (See Below)
 JV3222
 JV3222.The horizontal coordinates were established by autonomous hand held GPS
 JV3222.observations and have an estimated accuracy of +/- 10 meters.
 JV3222
 JV3222.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3222.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3222
 JV3222.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3222.GEOID18 height accuracy estimate available here.
 JV3222
 JV3222.The vertical order pertains to the NGVD 29 superseded value.
 JV3222
 JV3222.Click photographs - Photos may exist for this station.
 JV3222
 JV3222;                    North         East    Units  Estimated Accuracy
 JV3222;SPC MD       -   215,795.      320,811.      MT  (+/- 10 meters HH2 GPS)
 JV3222
 JV3222_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ4912988219(NAD 83)
 JV3222
 JV3222                          SUPERSEDED SURVEY CONTROL
 JV3222
 JV3222  NGVD 29 (11/26/84)  113.340  (m)          371.85   (f) ADJUSTED       
 JV3222
 JV3222.Superseded values are not recommended for survey control.
 JV3222
 JV3222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3222.See file dsdata.pdf to determine how the superseded data were derived.
 JV3222
 JV3222_MARKER: Q = CHISELED SQUARE
 JV3222_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3222_SP_SET: DAM WALL
 JV3222_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3222_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3222+SATELLITE: SATELLITE OBSERVATIONS - August 31, 2007
 JV3222
 JV3222  HISTORY     - Date     Condition        Report By
 JV3222  HISTORY     - 1893     MONUMENTED       CGS
 JV3222  HISTORY     - 1941     GOOD             CGS
 JV3222  HISTORY     - 1967     GOOD             CGS
 JV3222  HISTORY     - 20040819 POOR             GEOCAC
 JV3222  HISTORY     - 20070716 POOR             GEOCAC
 JV3222  HISTORY     - 20070831 GOOD             GEOCAC
 JV3222  HISTORY     - 20080712 POOR             NGS
 JV3222
 JV3222                          STATION DESCRIPTION
 JV3222
 JV3222'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV3222'7 MI W FROM WILLIAMSPORT.
 JV3222'11.2 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JV3222'STATION AT HAGERSTOWN, THENCE, 2.4 MILES SOUTHWEST ALONG A COUNTY
 JV3222'ROAD, IN THE NORTHEAST WALL OF DAM NO. 5, 12.7 FEET NORTHWEST OF A
 JV3222'POINT IN LINE WITH THE DAM, 3.4 FEET SOUTHWEST OF THE NORTHEAST
 JV3222'EDGE, 1.7 FEET NORTHEAST OF THE SOUTHWEST EDGE.
 JV3222
 JV3222                          STATION RECOVERY (1967)
 JV3222
 JV3222'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JV3222'RECOVERED IN GOOD CONDITION.
 JV3222
 JV3222                          STATION RECOVERY (2004)
 JV3222
 JV3222'RECOVERY NOTE BY GEOCACHING 2004 (MHB)
 JV3222'CHISELED SQUARE HAS DETERIORATED OVER TIME SO THAT IT APPEARS TO BE A
 JV3222'SQUARISH INDENTATION.
 JV3222
 JV3222                          STATION RECOVERY (2007)
 JV3222
 JV3222'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV3222'SEVEN MILES UPSTREAM FROM WILLIAMSPORT ALONG THE C AND O CANAL TOWPATH
 JV3222'TO DAM 5 OR USE DAM 5 ROAD TO THE PARKING LOT.  IN THE TOP OF THE WALL
 JV3222'ACROSS A GRASSY AREA FROM THE RIVERSIDE END OF THE FOOT BRIDGE LEADING
 JV3222'TO THE PARKING AREA.  AFTER WELL OVER A HUNDRED YEARS OF WEATHERING,
 JV3222'THE MARK IS STILL RECOGNIZABLE AS A SQUARE, AND I WOULD JUDGE CLOSE TO
 JV3222'BEING IN GOOD CONDITION.
 JV3222
 JV3222                          STATION RECOVERY (2007)
 JV3222
 JV3222'RECOVERY NOTE BY GEOCACHING 2007 (KAG)
 JV3222'RECOVERED IN GOOD CONDITION.
 JV3222
 JV3222                          STATION RECOVERY (2008)
 JV3222
 JV3222'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (GEL)
 JV3222'THE BENCH MARK IS ABOUT 11 MILES WEST-SOUTHWEST OF HAGERSTOWN MD AND
 JV3222'ABOUT 3 MILES SOUTH OF I-70 ON THE NORTH SHORE OF THE POTOMAC RIVER.
 JV3222'
 JV3222'TO REACH FROM THE JUNCTION OF I-81 AND U.S. 40 ABOUT 1 MILE WEST OF
 JV3222'HAGERSTOWN, GO WEST ON U.S. 40 (NATIONAL ROAD) FOR 7.1 MILES TO A SIDE
 JV3222'ROAD LEFT.
 JV3222'TURN LEFT ON ST. PAUL ROAD AND GO SOUTH FOR 0.6 MILE TO AN UNDERPASS
 JV3222'UNDER I-70.  CONTINUE SOUTHERLY ON ST. PAUL ROAD FOR 1.0 MILE TO A
 JV3222'CROSSROAD (STATE ROUTE 68.  CONTINUE SOUTHERLY ON ST. PAUL ROAD
 JV3222'(BECOMES DAM NUMBER 5 ROAD) FOR 3.3 MILES TO THE POINT WHERE THE ROAD
 JV3222'TURNS RIGHT AND FOLLOWS THE POTOMAC RIVER.  FOLLOW THE ROAD TO THE
 JV3222'RIGHT AND TRAVEL WESTERLY FOR 0.5 MILE TO A SIDE DRIVE LEFT.
 JV3222'TURN LEFT INTO THE CHESAPEAKE AND OHIO CANAL PARK, DAM NO. 5 AND PARK.
 JV3222'PACK NORTHWESTERLY TO THE END OF THE PARKING LOT AND THE WOODEN BRIDGE
 JV3222'OVER THE OLD CANAL.  PACK SOUTHWESTERLY ACROSS THE BRIDGE AND CONTINUE
 JV3222'AHEAD ABOUT 50 FEET TO THE STONE WALL AT THE EDGE OF THE RIVER AND THE
 JV3222'NORTHEAST END OF THE DAM.   PACK TIME ABOUT 2 MINUTES.
 JV3222'THE MARK IS ON TOP OF A LARGE STONE ON TOP OF THE STONE WALL ABOUT 12
 JV3222'FEET NORTHWEST OF THE EXTENDED LINE OF THE DAM AND ABOUT 2 FEET ABOVE
 JV3222'GROUND LEVEL.  THE MARK IS A CHISELED SQUARE HOLE SURROUNDED BY THE
 JV3222'LETTERS C, B M, U S C S, AND 1978.
 JV3222'THE CHISELED SQUARE IS IN POOR CONDITION WITH THE CENTER OF THE SQUARE
 JV3222'LOWER THAN THE EDGES, MAKING IT DIFFICULT TO DETERMINE THE EXACT
 JV3222'ELEVATION OF THE MARK.   THE MARK IS ABOUT 90 FEET NORTHWEST OF THE
 JV3222'SCALED POSITION.
 JV3222'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0586 ***********************************************************************
 HU0586  DESIGNATION -  C
 HU0586  PID         -  HU0586
 HU0586  STATE/COUNTY-  MD/SOMERSET
 HU0586  COUNTRY     -  US
 HU0586  USGS QUAD   -  DEAL ISLAND (2016)
 HU0586
 HU0586                         *CURRENT SURVEY CONTROL
 HU0586  ______________________________________________________________________
 HU0586* NAD 83(1986) POSITION- 38 07 44.     (N) 075 56 58.     (W)   SCALED
 HU0586* NAVD 88 ORTHO HEIGHT -     0.568 (meters)        1.86  (feet) ADJUSTED
 HU0586  ______________________________________________________________________
 HU0586  GEOID HEIGHT    -        -35.832 (meters)                     GEOID18
 HU0586  DYNAMIC HEIGHT  -          0.568 (meters)        1.86  (feet) COMP
 HU0586  MODELED GRAVITY -    979,982.7   (mgal)                       NAVD 88
 HU0586
 HU0586  VERT ORDER      -  FIRST     CLASS I
 HU0586
 HU0586.The horizontal coordinates were scaled from a map and have
 HU0586.an estimated accuracy of +/- 6 seconds.
 HU0586
 HU0586.The orthometric height was determined by differential leveling and
 HU0586.adjusted by the NATIONAL GEODETIC SURVEY
 HU0586.in June 1991.
 HU0586
 HU0586.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0586.GEOID18 height accuracy estimate available here.
 HU0586
 HU0586.Click photographs - Photos may exist for this station.
 HU0586
 HU0586.The dynamic height is computed by dividing the NAVD 88
 HU0586.geopotential number by the normal gravity value computed on the
 HU0586.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0586.degrees latitude (g = 980.6199 gals.).
 HU0586
 HU0586.The modeled gravity was interpolated from observed gravity values.
 HU0586
 HU0586;                    North         East    Units  Estimated Accuracy
 HU0586;SPC MD       -    51,840.      492,110.      MT  (+/- 180 meters Scaled)
 HU0586
 HU0586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH167205(NAD 83)
 HU0586
 HU0586                          SUPERSEDED SURVEY CONTROL
 HU0586
 HU0586  NGVD 29 (11/26/84)    0.826  (m)            2.71   (f) ADJUSTED    1 1
 HU0586
 HU0586.Superseded values are not recommended for survey control.
 HU0586
 HU0586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0586.See file dsdata.pdf to determine how the superseded data were derived.
 HU0586
 HU0586_MARKER: DD = SURVEY DISK
 HU0586_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0586_STAMPING: BM NO C ELEV 3.45
 HU0586_MARK LOGO: USACE
 HU0586_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0586_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0586+STABILITY: SURFACE MOTION
 HU0586_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0586+SATELLITE: SATELLITE OBSERVATIONS - November 10, 1988
 HU0586
 HU0586  HISTORY     - Date     Condition        Report By
 HU0586  HISTORY     - UNK      MONUMENTED       DOD
 HU0586  HISTORY     - 1963     GOOD             CGS
 HU0586  HISTORY     - 19881110 GOOD             MDSHA
 HU0586
 HU0586                          STATION DESCRIPTION
 HU0586
 HU0586'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0586'6.6 MI W FROM DAMES QUARTER.
 HU0586'6.6 MILES WEST ALONG STATE HIGHWAY 363 FROM THE POST OFFICE AT
 HU0586'DAMES QUARTER, AT WENONA, ABOUT 0.1 NORTHWEST OF THE ROGER HOFFMAN
 HU0586'STORE, ABOUT 500 FEET NORTHWEST OF THE HIGHWAY, 7.6 FEET SOUTH OF
 HU0586'SOUTH CORNER OF A WHITE TWO STORY FRAME HOUSE, 54.3 FEET WEST OF
 HU0586'A CEDAR TREE, AND SET IN THE TOP OF A CONCRETE POST 1 INCH BELOW
 HU0586'THE SURFACE OF GROUND.
 HU0586
 HU0586                          STATION RECOVERY (1988)
 HU0586
 HU0586'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1988
 HU0586'THE MARK IS LOCATED IN THE SOUTHERLY PART OF THE SMALL VILLAGE OF
 HU0586'WENONA.  OWNERSHIP--JOSEPH SCHMIDT.  PHONE (301) 784-2732.
 HU0586'TO REACH FROM THE SOUTHWEST END OF THE NEW DEAL ISLAND BRIDGE OVER
 HU0586'UPPER THOROFARE, GO SOUTH ON STATE HIGHWAY 363 FOR 5.42 KM (3.35 MI)
 HU0586'TO A T-INTERSECTION.  TURN RIGHT AND GO NORTHWEST ON A SAND ROAD FOR
 HU0586'0.1 KM (0.05 MI) TO THE MARK ON THE RIGHT.
 HU0586'THE MARK IS SET IN THE TOP OF A 0.25 M (0.8 FT) SQUARE CONCRETE POST
 HU0586'RECESSED 0.1 M (0.3 FT) BELOW GROUND.  IT IS 42.9 M (140.7 FT)
 HU0586'SOUTHEAST OF THE EAST CORNER PILING OF A 1-STORY HOUSE, 26.1 M
 HU0586'(85.6 FT) SOUTH OF A POWERLINE POLE NUMBERED 6707-84610 502, 21.5 M
 HU0586'(70.5 FT) EAST OF THE NORTH CORNER OF A 1-STORY HOUSE, 16.6 M
 HU0586'(54.5 FT) WEST OF A 0.37 M (1.2 FT) CEDAR TREE AND 0.6 M (2.0 FT)
 HU0586'SOUTH-SOUTHWEST OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0828 ***********************************************************************
 HV0828  DESIGNATION -  C 1
 HV0828  PID         -  HV0828
 HV0828  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0828  COUNTRY     -  US
 HV0828  USGS QUAD   -  BRANDYWINE (2016)
 HV0828
 HV0828                         *CURRENT SURVEY CONTROL
 HV0828  ______________________________________________________________________
 HV0828* NAD 83(1986) POSITION- 38 41 48.     (N) 076 50 49.     (W)   SCALED
 HV0828* NAVD 88 ORTHO HEIGHT -    71.018 (meters)      233.00  (feet) ADJUSTED
 HV0828  ______________________________________________________________________
 HV0828  GEOID HEIGHT    -        -32.903 (meters)                     GEOID18
 HV0828  DYNAMIC HEIGHT  -         70.976 (meters)      232.86  (feet) COMP
 HV0828  MODELED GRAVITY -    980,047.5   (mgal)                       NAVD 88
 HV0828
 HV0828  VERT ORDER      -  FIRST     CLASS II
 HV0828
 HV0828.The horizontal coordinates were scaled from a map and have
 HV0828.an estimated accuracy of +/- 6 seconds.
 HV0828
 HV0828.The orthometric height was determined by differential leveling and
 HV0828.adjusted by the NATIONAL GEODETIC SURVEY
 HV0828.in June 1991.
 HV0828
 HV0828.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0828.GEOID18 height accuracy estimate available here.
 HV0828
 HV0828.Click photographs - Photos may exist for this station.
 HV0828
 HV0828.The dynamic height is computed by dividing the NAVD 88
 HV0828.geopotential number by the normal gravity value computed on the
 HV0828.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0828.degrees latitude (g = 980.6199 gals.).
 HV0828
 HV0828.The modeled gravity was interpolated from observed gravity values.
 HV0828
 HV0828;                    North         East    Units  Estimated Accuracy
 HV0828;SPC MD       -   114,350.      413,310.      MT  (+/- 180 meters Scaled)
 HV0828
 HV0828_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH393847(NAD 83)
 HV0828
 HV0828                          SUPERSEDED SURVEY CONTROL
 HV0828
 HV0828  NGVD 29 (05/01/89)   71.244  (m)          233.74   (f) ADJUSTED    1 2
 HV0828  NGVD 29 (??/??/87)   71.274  (m)          233.84   (f) SUPERSEDED  1 2
 HV0828
 HV0828.Superseded values are not recommended for survey control.
 HV0828
 HV0828.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0828.See file dsdata.pdf to determine how the superseded data were derived.
 HV0828
 HV0828_MARKER: DB = BENCH MARK DISK
 HV0828_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0828_SP_SET: CULVERT
 HV0828_STAMPING: C 1 1917
 HV0828_MARK LOGO: CGS
 HV0828_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0828
 HV0828  HISTORY     - Date     Condition        Report By
 HV0828  HISTORY     - 1917     MONUMENTED       CGS
 HV0828  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0828
 HV0828                          STATION DESCRIPTION
 HV0828
 HV0828'DESCRIBED BY COAST AND GEODETIC SURVEY 1917
 HV0828'AT BRANDYWINE.
 HV0828'AT BRANDYWINE, PRINCE GEORGES COUNTY, ON THE PENNSYLVANIA
 HV0828'RAILROAD, 160 FEET NORTH OF THE STATION, 160 FEET EAST OF THE
 HV0828'TRACK, AT A CONCRETE CULVERT UNDER A HIGHWAY CROSSING THE TRACK,
 HV0828'IN THE TOP OF THE SOUTH PARAPET, AND ABOUT 16 INCHES HIGHER THAN
 HV0828'THE HIGHWAY.  A STANDARD DISK, STAMPED C 1 1917.
 HV0828
 HV0828                          STATION RECOVERY (1971)
 HV0828
 HV0828'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0828'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1602 ***********************************************************************
 JU1602  DESIGNATION -  C 103
 JU1602  PID         -  JU1602
 JU1602  STATE/COUNTY-  MD/CECIL
 JU1602  COUNTRY     -  US
 JU1602  USGS QUAD   -  ELKTON (2016)
 JU1602
 JU1602                         *CURRENT SURVEY CONTROL
 JU1602  ______________________________________________________________________
 JU1602* NAD 83(1986) POSITION- 39 36 19.     (N) 075 49 56.     (W)   SCALED
 JU1602* NAVD 88 ORTHO HEIGHT -     4.299 (meters)       14.10  (feet) ADJUSTED
 JU1602  ______________________________________________________________________
 JU1602  GEOID HEIGHT    -        -33.150 (meters)                     GEOID18
 JU1602  DYNAMIC HEIGHT  -          4.297 (meters)       14.10  (feet) COMP
 JU1602  MODELED GRAVITY -    980,141.5   (mgal)                       NAVD 88
 JU1602
 JU1602  VERT ORDER      -  SECOND    CLASS I
 JU1602
 JU1602.The horizontal coordinates were scaled from a map and have
 JU1602.an estimated accuracy of +/- 6 seconds.
 JU1602
 JU1602.The orthometric height was determined by differential leveling and
 JU1602.adjusted by the NATIONAL GEODETIC SURVEY
 JU1602.in June 1991.
 JU1602
 JU1602.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1602.GEOID18 height accuracy estimate available here.
 JU1602
 JU1602.Click photographs - Photos may exist for this station.
 JU1602
 JU1602.The dynamic height is computed by dividing the NAVD 88
 JU1602.geopotential number by the normal gravity value computed on the
 JU1602.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1602.degrees latitude (g = 980.6199 gals.).
 JU1602
 JU1602.The modeled gravity was interpolated from observed gravity values.
 JU1602
 JU1602;                    North         East    Units  Estimated Accuracy
 JU1602;SPC MD       -   215,850.      500,290.      MT  (+/- 180 meters Scaled)
 JU1602
 JU1602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ285842(NAD 83)
 JU1602
 JU1602                          SUPERSEDED SURVEY CONTROL
 JU1602
 JU1602  NGVD 29 (11/26/84)    4.534  (m)           14.88   (f) ADJUSTED    2 0
 JU1602
 JU1602.Superseded values are not recommended for survey control.
 JU1602
 JU1602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1602.See file dsdata.pdf to determine how the superseded data were derived.
 JU1602
 JU1602_MARKER: B = BOLT
 JU1602_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JU1602_SP_SET: BRIDGE ABUTMENT
 JU1602_STAMPING: C 103 CGS
 JU1602_MARK LOGO: NONE
 JU1602_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU1602_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1602_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1602+SATELLITE: SATELLITE OBSERVATIONS - November 30, 1998
 JU1602
 JU1602  HISTORY     - Date     Condition        Report By
 JU1602  HISTORY     - 1961     MONUMENTED       CGS
 JU1602  HISTORY     - 1964     GOOD             CGS
 JU1602  HISTORY     - 19930130 GOOD             USPSQD
 JU1602  HISTORY     - 19981130 GOOD             MDSHA
 JU1602
 JU1602                          STATION DESCRIPTION
 JU1602
 JU1602'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1602'AT ELKTON.
 JU1602'AT ELKTON, ON BRIDGE STREET, IN THE TOP OF THE NORTHWEST ABUTMENT
 JU1602'OF THE BRIDGE OVER ELK RIVER, 28 FEET WEST OF THE CENTER LINE OF
 JU1602'HIGHWAY 280.  A SQUARE HEADED BOLT SET IN A DRILL HOLE.
 JU1602
 JU1602                          STATION RECOVERY (1993)
 JU1602
 JU1602'RECOVERY NOTE BY US POWER SQUADRON 1993 (DMM)
 JU1602'RECOVERED IN GOOD CONDITION.
 JU1602
 JU1602                          STATION RECOVERY (1998)
 JU1602
 JU1602'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (CFK)
 JU1602'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2606 ***********************************************************************
 DJ2606  DESIGNATION -  C 103 RESET
 DJ2606  PID         -  DJ2606
 DJ2606  STATE/COUNTY-  MD/CECIL
 DJ2606  COUNTRY     -  US
 DJ2606  USGS QUAD   -  ELKTON (2016)
 DJ2606
 DJ2606                         *CURRENT SURVEY CONTROL
 DJ2606  ______________________________________________________________________
 DJ2606* NAD 83(1986) POSITION- 39 36 17.37   (N) 075 49 53.58   (W)   HD_HELD1
 DJ2606* NAVD 88 ORTHO HEIGHT -     2.996 (meters)        9.83  (feet) ADJUSTED
 DJ2606  ______________________________________________________________________
 DJ2606  GEOID HEIGHT    -        -33.151 (meters)                     GEOID18
 DJ2606  DYNAMIC HEIGHT  -          2.994 (meters)        9.82  (feet) COMP
 DJ2606  MODELED GRAVITY -    980,141.6   (mgal)                       NAVD 88
 DJ2606
 DJ2606  VERT ORDER      -  SECOND    CLASS I
 DJ2606
 DJ2606.The horizontal coordinates were determined by differentially corrected
 DJ2606.hand held GPS observations or other comparable positioning techniques
 DJ2606.and have an estimated accuracy of +/- 3 meters.
 DJ2606
 DJ2606.The orthometric height was determined by differential leveling and
 DJ2606.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2606.in October 2007.
 DJ2606
 DJ2606.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2606.GEOID18 height accuracy estimate available here.
 DJ2606
 DJ2606.Click photographs - Photos may exist for this station.
 DJ2606
 DJ2606.The dynamic height is computed by dividing the NAVD 88
 DJ2606.geopotential number by the normal gravity value computed on the
 DJ2606.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2606.degrees latitude (g = 980.6199 gals.).
 DJ2606
 DJ2606.The modeled gravity was interpolated from observed gravity values.
 DJ2606
 DJ2606;                    North         East    Units  Estimated Accuracy
 DJ2606;SPC MD       -   215,795.7     500,351.6     MT  (+/- 3 meters HH1 GPS) 
 DJ2606
 DJ2606_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2861184228(NAD 83)
 DJ2606
 DJ2606                          SUPERSEDED SURVEY CONTROL
 DJ2606
 DJ2606.No superseded survey control is available for this station.
 DJ2606
 DJ2606_MARKER: DD = SURVEY DISK
 DJ2606_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ2606_STAMPING: C 103 RESET 1998
 DJ2606_MARK LOGO: MDSHA
 DJ2606_PROJECTION: RECESSED 3 CENTIMETERS
 DJ2606_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ2606_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ2606+STABILITY: SURFACE MOTION
 DJ2606_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ2606+SATELLITE: SATELLITE OBSERVATIONS - July 29, 2008
 DJ2606
 DJ2606  HISTORY     - Date     Condition        Report By
 DJ2606  HISTORY     - 19981130 MONUMENTED       MDSHA
 DJ2606  HISTORY     - 20070606 GOOD             MDSHA
 DJ2606  HISTORY     - 20080729 GOOD             UE
 DJ2606
 DJ2606                          STATION DESCRIPTION
 DJ2606
 DJ2606'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DJ2606'THE MARK IS LOCATED ABOUT 7.0 MI (11.2 KM) SOUTHWEST OF NEWARK, 5.9 MI
 DJ2606'(9.5 KM) EAST OF NORTH EAST AND 0.2 MI (0.2 KM) SOUTH-SOUTHEAST OF
 DJ2606'ELKTON NEAR THE STATE HIGHWAY 213 BRIDGE OVER BIG ELK CREEK.
 DJ2606'
 DJ2606'IT IS 56.2 FEET (17.1 M) SOUTHWEST OF THE CENTER OF THE HIGHWAY, 11.1
 DJ2606'FEET (3.4 M) SOUTH OF A POWER POLE NUMBER 40629-38309, 65.6 FEET (20.0
 DJ2606'M) NORTHEAST OF THE NORTHEAST CORNER OF A 1 STORY BLOCK BUILDING,
 DJ2606'194.6 FEET (59.3 M) SOUTHEAST OF THE SOUTHEAST EDGE OF BIG ELK CREEK,
 DJ2606'2.8 FEET (0.9 M) NORTHEAST OF A CARSONITE WITNESS POST AND SET IN THE
 DJ2606'TOP OF A 12 INCH (30 CM) ROUND CONCRETE POST.
 DJ2606
 DJ2606                          STATION RECOVERY (2008)
 DJ2606
 DJ2606'RECOVERY NOTE BY URBAN ENGINEERS INC 2008 (WBF)
 DJ2606'STATION DESCRIPTION SHOULD READ,  65.6 FEET NNW OF THE NORTH CORNER OF
 DJ2606'A 1 STORY BLOCK BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0548 ***********************************************************************
 HU0548  DESIGNATION -  C 105
 HU0548  PID         -  HU0548
 HU0548  STATE/COUNTY-  MD/WICOMICO
 HU0548  COUNTRY     -  US
 HU0548  USGS QUAD   -  EDEN (2016)
 HU0548
 HU0548                         *CURRENT SURVEY CONTROL
 HU0548  ______________________________________________________________________
 HU0548* NAD 83(1986) POSITION- 38 20 32.     (N) 075 44 15.     (W)   SCALED
 HU0548* NAVD 88 ORTHO HEIGHT -     5.269 (meters)       17.29  (feet) ADJUSTED
 HU0548  ______________________________________________________________________
 HU0548  GEOID HEIGHT    -        -35.760 (meters)                     GEOID18
 HU0548  DYNAMIC HEIGHT  -          5.266 (meters)       17.28  (feet) COMP
 HU0548  MODELED GRAVITY -    980,003.0   (mgal)                       NAVD 88
 HU0548
 HU0548  VERT ORDER      -  FIRST     CLASS I
 HU0548
 HU0548.The horizontal coordinates were scaled from a map and have
 HU0548.an estimated accuracy of +/- 6 seconds.
 HU0548
 HU0548.The orthometric height was determined by differential leveling and
 HU0548.adjusted by the NATIONAL GEODETIC SURVEY
 HU0548.in June 1991.
 HU0548
 HU0548.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0548.GEOID18 height accuracy estimate available here.
 HU0548
 HU0548.Click photographs - Photos may exist for this station.
 HU0548
 HU0548.The dynamic height is computed by dividing the NAVD 88
 HU0548.geopotential number by the normal gravity value computed on the
 HU0548.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0548.degrees latitude (g = 980.6199 gals.).
 HU0548
 HU0548.The modeled gravity was interpolated from observed gravity values.
 HU0548
 HU0548;                    North         East    Units  Estimated Accuracy
 HU0548;SPC MD       -    75,750.      510,370.      MT  (+/- 180 meters Scaled)
 HU0548
 HU0548_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH355440(NAD 83)
 HU0548
 HU0548                          SUPERSEDED SURVEY CONTROL
 HU0548
 HU0548  NGVD 29 (11/26/84)    5.522  (m)           18.12   (f) ADJUSTED    1 1
 HU0548
 HU0548.Superseded values are not recommended for survey control.
 HU0548
 HU0548.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0548.See file dsdata.pdf to determine how the superseded data were derived.
 HU0548
 HU0548_MARKER: DB = BENCH MARK DISK
 HU0548_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0548_STAMPING: C 105 1963
 HU0548_MARK LOGO: CGS
 HU0548_PROJECTION: RECESSED 8 CENTIMETERS
 HU0548_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0548+STABILITY: SURFACE MOTION
 HU0548
 HU0548  HISTORY     - Date     Condition        Report By
 HU0548  HISTORY     - 1963     MONUMENTED       CGS
 HU0548  HISTORY     - 19900306 MARK NOT FOUND   NGS
 HU0548
 HU0548                          STATION DESCRIPTION
 HU0548
 HU0548'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0548'6.4 MI NE FROM WHITEHAVEN.
 HU0548'6.45 MILES NORTHEAST ALONG STATE HIGHWAY 352 FROM THE FERRY
 HU0548'LANDING AT WHITEHAVEN, AT THE JUNCTION OF A BLACK TOP ROAD
 HU0548'LEADING NORTHWEST, ACROSS HIGHWAY FROM THE SOUTHWEST CORNER OF
 HU0548'THE GREEN HILL YACHT AND COUNTRY CLUB GOLF COURSE, 82 FEET NORTH
 HU0548'OF CENTER OF THE JUNCTION, 29 FEET NORTHWEST OF CENTER LINE OF
 HU0548'HIGHWAY, 2 1/2 FEET NORTHWEST OF POWER POLE 38, 1.5 FEET SOUTHEAST
 HU0548'OF A STEEL WITNESS POST, 1 FOOT ABOVE LEVEL OF HIGHWAY, AND SET
 HU0548'IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES.
 HU0548
 HU0548                          STATION RECOVERY (1990)
 HU0548
 HU0548'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0548'THE THOROUGH SEARCH OF THE AREA REVEALED NO EVIDENCE OF THE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW0497 ***********************************************************************
 FW0497  DESIGNATION -  C 106
 FW0497  PID         -  FW0497
 FW0497  STATE/COUNTY-  MD/SOMERSET
 FW0497  COUNTRY     -  US
 FW0497  USGS QUAD   -  CRISFIELD (2016)
 FW0497
 FW0497                         *CURRENT SURVEY CONTROL
 FW0497  ______________________________________________________________________
 FW0497* NAD 83(1986) POSITION- 37 59 23.6    (N) 075 50 42.8    (W)   HD_HELD2
 FW0497* NAVD 88 ORTHO HEIGHT -     1.345 (meters)        4.41  (feet) ADJUSTED
 FW0497  ______________________________________________________________________
 FW0497  GEOID HEIGHT    -        -36.088 (meters)                     GEOID18
 FW0497  DYNAMIC HEIGHT  -          1.344 (meters)        4.41  (feet) COMP
 FW0497  MODELED GRAVITY -    979,972.7   (mgal)                       NAVD 88
 FW0497
 FW0497  VERT ORDER      -  FIRST     CLASS I
 FW0497
 FW0497.The horizontal coordinates were established by autonomous hand held GPS
 FW0497.observations and have an estimated accuracy of +/- 10 meters.
 FW0497
 FW0497.The orthometric height was determined by differential leveling and
 FW0497.adjusted by the NATIONAL GEODETIC SURVEY
 FW0497.in June 1991.
 FW0497
 FW0497.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW0497.GEOID18 height accuracy estimate available here.
 FW0497
 FW0497.Click photographs - Photos may exist for this station.
 FW0497
 FW0497.The dynamic height is computed by dividing the NAVD 88
 FW0497.geopotential number by the normal gravity value computed on the
 FW0497.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 FW0497.degrees latitude (g = 980.6199 gals.).
 FW0497
 FW0497.The modeled gravity was interpolated from observed gravity values.
 FW0497
 FW0497;                    North         East    Units  Estimated Accuracy
 FW0497;SPC MD       -    36,521.      501,445.      MT  (+/- 10 meters HH2 GPS)
 FW0497
 FW0497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2578005030(NAD 83)
 FW0497
 FW0497                          SUPERSEDED SURVEY CONTROL
 FW0497
 FW0497  NGVD 29 (11/26/84)    1.596  (m)            5.24   (f) ADJUSTED    1 1
 FW0497
 FW0497.Superseded values are not recommended for survey control.
 FW0497
 FW0497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW0497.See file dsdata.pdf to determine how the superseded data were derived.
 FW0497
 FW0497_MARKER: DB = BENCH MARK DISK
 FW0497_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 FW0497_STAMPING: C 106 1963
 FW0497_MARK LOGO: CGS
 FW0497_PROJECTION: FLUSH
 FW0497_MAGNETIC: N = NO MAGNETIC MATERIAL
 FW0497_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 FW0497+STABILITY: SURFACE MOTION
 FW0497_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 FW0497+SATELLITE: SATELLITE OBSERVATIONS - September 27, 2021
 FW0497
 FW0497  HISTORY     - Date     Condition        Report By
 FW0497  HISTORY     - 1963     MONUMENTED       CGS
 FW0497  HISTORY     - 1990     GOOD             USPSQD
 FW0497  HISTORY     - 19901026 GOOD             NGS
 FW0497  HISTORY     - 20021029 GOOD             NGS
 FW0497  HISTORY     - 20041024 GOOD             GEOCAC
 FW0497  HISTORY     - 20051027 GOOD             NGS
 FW0497  HISTORY     - 20080402 GOOD             MDSHA
 FW0497  HISTORY     - 20210927 GOOD             PROFLN
 FW0497
 FW0497                          STATION DESCRIPTION
 FW0497
 FW0497'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 FW0497'0.8 MI NE FROM CRISFIELD.
 FW0497'ABOUT 0.75 MILE NORTHEAST ALONG STATE HIGHWAY 413 FROM THE POST
 FW0497'OFFICE AT CRISFIELD, ABOUT 0.1 MILE SOUTHWEST OF INTERSECTION OF
 FW0497'STATE HIGHWAY 358 LEADING NORTH AND SOUTH, 20 FEET SOUTHEAST OF
 FW0497'NORTHBOUND LANE OF HIGHWAY, 24 1/2 FEET NORTH OF A LONE 24-INCH PINE
 FW0497'TREE, 17 1/2 FEET NORTHEAST OF SOUTHEAST END OF A 24-INCH PIPE
 FW0497'CULVERT UNDER HIGHWAY, 3 1/2 FEET NORTHEAST OF TELEPHONE POLE 11G,
 FW0497'2 FEET SOUTHEAST OF SOUTHEAST CURB LINE OF NORTH-BOUND LANE, 1.5
 FW0497'FEET SOUTHWEST OF A STEEL WITNESS POST, 1 FOOT ABOVE LEVEL OF
 FW0497'HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
 FW0497
 FW0497                          STATION RECOVERY (1990)
 FW0497
 FW0497'RECOVERY NOTE BY US POWER SQUADRON 1990 (LW)
 FW0497'RECOVERED IN GOOD CONDITION.
 FW0497
 FW0497                          STATION RECOVERY (1990)
 FW0497
 FW0497'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 FW0497'1.2 KM (0.7 MI) NORTHERLY ALONG STATE HIGHWAY 413 FROM THE JUNCTION OF
 FW0497'FOURTH STREET IN CRISFIELD, 12.8 M (42.0 FT) WEST OF THE NORTHEAST
 FW0497'CORNER OF A CARWASH, 7.1 M (23.3 FT) SOUTHEAST OF THE CENTERLINE OF
 FW0497'THE NORTHBOUND LANES OF THE HIGHWAY, 2.3 M (7.5 FT) NORTHEAST OF
 FW0497'UTILITY POLE NUMBER 39680 79528, 0.5 M (1.6 FT) SOUTHWEST OF A
 FW0497'WITNESS POST, 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE HIGHWAY, AND THE
 FW0497'MONUMENT PROJECTS 0.1 M (0.3 FT) ABOVE THE GROUND SURFACE.
 FW0497
 FW0497                          STATION RECOVERY (2002)
 FW0497
 FW0497'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (DBC)
 FW0497'RECOVERED IN GOOD CONDITION.  NOTE-0.1 MILE SOUTHEAST OF INTERSECTION
 FW0497'OF MARYLAND STATE HIGHWAYS 413 AND 358 (JACKSONVILLE ROAD).
 FW0497
 FW0497                          STATION RECOVERY (2004)
 FW0497
 FW0497'RECOVERY NOTE BY GEOCACHING 2004 (DPH)
 FW0497'RECOVERED IN GOOD CONDITION.
 FW0497
 FW0497                          STATION RECOVERY (2005)
 FW0497
 FW0497'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 FW0497'RECOVERED AS DESCRIBED.
 FW0497
 FW0497                          STATION RECOVERY (2008)
 FW0497
 FW0497'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (MPM)
 FW0497'THE MARK IS NOW IN THE CENTER OF A CONCRETE WALK IN FRONT OF CAR WASH.
 FW0497'
 FW0497
 FW0497                          STATION RECOVERY (2021)
 FW0497
 FW0497'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 FW0497'THE MARK IS 2 FT (0.6 M) SOUTHEAST OF THE SOUTHEAST CURB OF RIGHT 413.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0580 ***********************************************************************
 HU0580  DESIGNATION -  C 107
 HU0580  PID         -  HU0580
 HU0580  STATE/COUNTY-  MD/SOMERSET
 HU0580  COUNTRY     -  US
 HU0580  USGS QUAD   -  DEAL ISLAND (2016)
 HU0580
 HU0580                         *CURRENT SURVEY CONTROL
 HU0580  ______________________________________________________________________
 HU0580* NAD 83(1986) POSITION- 38 10 38.     (N) 075 55 44.     (W)   SCALED
 HU0580* NAVD 88 ORTHO HEIGHT -     1.065 (meters)        3.49  (feet) ADJUSTED
 HU0580  ______________________________________________________________________
 HU0580  GEOID HEIGHT    -        -35.797 (meters)                     GEOID18
 HU0580  DYNAMIC HEIGHT  -          1.064 (meters)        3.49  (feet) COMP
 HU0580  MODELED GRAVITY -    979,985.6   (mgal)                       NAVD 88
 HU0580
 HU0580  VERT ORDER      -  FIRST     CLASS I
 HU0580
 HU0580.The horizontal coordinates were scaled from a map and have
 HU0580.an estimated accuracy of +/- 6 seconds.
 HU0580
 HU0580.The orthometric height was determined by differential leveling and
 HU0580.adjusted by the NATIONAL GEODETIC SURVEY
 HU0580.in June 1991.
 HU0580
 HU0580.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0580.GEOID18 height accuracy estimate available here.
 HU0580
 HU0580.Click photographs - Photos may exist for this station.
 HU0580
 HU0580.The dynamic height is computed by dividing the NAVD 88
 HU0580.geopotential number by the normal gravity value computed on the
 HU0580.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0580.degrees latitude (g = 980.6199 gals.).
 HU0580
 HU0580.The modeled gravity was interpolated from observed gravity values.
 HU0580
 HU0580;                    North         East    Units  Estimated Accuracy
 HU0580;SPC MD       -    57,230.      493,850.      MT  (+/- 180 meters Scaled)
 HU0580
 HU0580_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH186258(NAD 83)
 HU0580
 HU0580                          SUPERSEDED SURVEY CONTROL
 HU0580
 HU0580  NGVD 29 (11/26/84)    1.324  (m)            4.34   (f) ADJUSTED    1 1
 HU0580
 HU0580.Superseded values are not recommended for survey control.
 HU0580
 HU0580.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0580.See file dsdata.pdf to determine how the superseded data were derived.
 HU0580
 HU0580_MARKER: DB = BENCH MARK DISK
 HU0580_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0580_STAMPING: C 107 1963
 HU0580_MARK LOGO: CGS
 HU0580_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU0580_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0580+STABILITY: SURFACE MOTION
 HU0580_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0580+SATELLITE: SATELLITE OBSERVATIONS - September 28, 1987
 HU0580
 HU0580  HISTORY     - Date     Condition        Report By
 HU0580  HISTORY     - 1963     MONUMENTED       CGS
 HU0580  HISTORY     - 19870928 GOOD             NGS
 HU0580
 HU0580                          STATION DESCRIPTION
 HU0580
 HU0580'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0580'1.9 MI W FROM DAMES QUARTER.
 HU0580'1.9 MILES WEST ALONG STATE HIGHWAY 363 FROM THE POST OFFICE AT
 HU0580'DAMES QUARTER, ABOUT 0.5 MILE EAST OF THE POST OFFICE AT THE
 HU0580'SMALL COMMUNITY OF CHANCE, ABOUT 105 YARDS WEST OF THE JUNCTION
 HU0580'OF A BLACK TOP ROAD LEADING NORTHWEST, 34 FEET NORTH OF CENTER
 HU0580'LINE OF HIGHWAY, 98 FEET SOUTH-SOUTHWEST OF SOUTHWEST CORNER OF A
 HU0580'TWO STORY FRAME HOUSE, 3 1/2 FEET SOUTH OF POWER POLE 350A, 1.5
 HU0580'FEET NORTH OF A STEEL WITNESS POST, 1 FOOT BELOW LEVEL OF HIGHWAY,
 HU0580'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES.
 HU0580
 HU0580                          STATION RECOVERY (1987)
 HU0580
 HU0580'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU0580'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1322 ***********************************************************************
 JV1322  DESIGNATION -  C 109 MDSRC
 JV1322  PID         -  JV1322
 JV1322  STATE/COUNTY-  MD/HOWARD
 JV1322  COUNTRY     -  US
 JV1322  USGS QUAD   -  SAVAGE (2016)
 JV1322
 JV1322                         *CURRENT SURVEY CONTROL
 JV1322  ______________________________________________________________________
 JV1322* NAD 83(1986) POSITION- 39 11 39.     (N) 076 51 56.     (W)   SCALED
 JV1322* NAVD 88 ORTHO HEIGHT -   123.388 (meters)      404.82  (feet) ADJUSTED
 JV1322  ______________________________________________________________________
 JV1322  GEOID HEIGHT    -        -32.174 (meters)                     GEOID18
 JV1322  DYNAMIC HEIGHT  -        123.322 (meters)      404.60  (feet) COMP
 JV1322  MODELED GRAVITY -    980,090.0   (mgal)                       NAVD 88
 JV1322
 JV1322  VERT ORDER      -  SECOND    CLASS 0
 JV1322
 JV1322.The horizontal coordinates were scaled from a map and have
 JV1322.an estimated accuracy of +/- 6 seconds.
 JV1322
 JV1322.The orthometric height was determined by differential leveling and
 JV1322.adjusted by the NATIONAL GEODETIC SURVEY
 JV1322.in June 1991.
 JV1322
 JV1322.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1322.GEOID18 height accuracy estimate available here.
 JV1322
 JV1322.Click photographs - Photos may exist for this station.
 JV1322
 JV1322.The dynamic height is computed by dividing the NAVD 88
 JV1322.geopotential number by the normal gravity value computed on the
 JV1322.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1322.degrees latitude (g = 980.6199 gals.).
 JV1322
 JV1322.The modeled gravity was interpolated from observed gravity values.
 JV1322
 JV1322;                    North         East    Units  Estimated Accuracy
 JV1322;SPC MD       -   169,570.      411,610.      MT  (+/- 180 meters Scaled)
 JV1322
 JV1322_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ388399(NAD 83)
 JV1322
 JV1322                          SUPERSEDED SURVEY CONTROL
 JV1322
 JV1322  NGVD 29 (11/26/84)  123.605  (m)          405.53   (f) ADJUSTED    2 0
 JV1322
 JV1322.Superseded values are not recommended for survey control.
 JV1322
 JV1322.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1322.See file dsdata.pdf to determine how the superseded data were derived.
 JV1322
 JV1322_MARKER: DB = BENCH MARK DISK
 JV1322_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1322_STAMPING: C 109 1965 USC AND GS
 JV1322_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1322+STABILITY: SURFACE MOTION
 JV1322
 JV1322  HISTORY     - Date     Condition        Report By
 JV1322  HISTORY     - 1966     MONUMENTED       MDSRC
 JV1322  HISTORY     - 1987     GOOD             USPSQD
 JV1322
 JV1322                          STATION DESCRIPTION
 JV1322
 JV1322'DESCRIBED BY MD STATE ROADS COMM 1966
 JV1322'3.4 MI S FROM COLUMBIA.
 JV1322'ABOUT 3.4 MILES SOUTH ALONG U.S. HIGHWAY 29 FROM THE
 JV1322'INTERSECTION OF STATE HIGHWAY 108 AT COLUMBIA, 42.0 FT. SOUTHEAST
 JV1322'OF THE CENTER LINE OF THE HIGHWAY, 9.0 FT. NORTH OF POWER
 JV1322'POLE NUMBER 358719, 21.0 FT. NORTHWEST OF PAVED SERVICE ROAD,
 JV1322'2.5 FT. SOUTHEAST OF METAL WITNESS POST.  SET IN THE TOP OF A
 JV1322'CONCRETE POST PROJECTING 2 INCHES.
 JV1322
 JV1322                          STATION RECOVERY (1987)
 JV1322
 JV1322'RECOVERY NOTE BY US POWER SQUADRON 1987 (JRD)
 JV1322'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1190 ***********************************************************************
 JU1190  DESIGNATION -  C 11
 JU1190  PID         -  JU1190
 JU1190  STATE/COUNTY-  MD/QUEEN ANNES
 JU1190  COUNTRY     -  US
 JU1190  USGS QUAD   -  SUDLERSVILLE (2017)
 JU1190
 JU1190                         *CURRENT SURVEY CONTROL
 JU1190  ______________________________________________________________________
 JU1190* NAD 83(1986) POSITION- 39 12 01.     (N) 075 51 09.     (W)   SCALED
 JU1190* NAVD 88 ORTHO HEIGHT -    17.989 (meters)       59.02  (feet) ADJUSTED
 JU1190  ______________________________________________________________________
 JU1190  GEOID HEIGHT    -        -33.737 (meters)                     GEOID18
 JU1190  DYNAMIC HEIGHT  -         17.979 (meters)       58.99  (feet) COMP
 JU1190  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JU1190
 JU1190  VERT ORDER      -  SECOND    CLASS 0
 JU1190
 JU1190.The horizontal coordinates were scaled from a map and have
 JU1190.an estimated accuracy of +/- 6 seconds.
 JU1190
 JU1190.The orthometric height was determined by differential leveling and
 JU1190.adjusted by the NATIONAL GEODETIC SURVEY
 JU1190.in June 1991.
 JU1190
 JU1190.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1190.GEOID18 height accuracy estimate available here.
 JU1190
 JU1190.Click photographs - Photos may exist for this station.
 JU1190
 JU1190.The dynamic height is computed by dividing the NAVD 88
 JU1190.geopotential number by the normal gravity value computed on the
 JU1190.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1190.degrees latitude (g = 980.6199 gals.).
 JU1190
 JU1190.The modeled gravity was interpolated from observed gravity values.
 JU1190
 JU1190;                    North         East    Units  Estimated Accuracy
 JU1190;SPC MD       -   170,860.      499,120.      MT  (+/- 180 meters Scaled)
 JU1190
 JU1190_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ263393(NAD 83)
 JU1190
 JU1190                          SUPERSEDED SURVEY CONTROL
 JU1190
 JU1190  NGVD 29 (11/26/84)   18.228  (m)           59.80   (f) ADJUSTED    2 0
 JU1190
 JU1190.Superseded values are not recommended for survey control.
 JU1190
 JU1190.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1190.See file dsdata.pdf to determine how the superseded data were derived.
 JU1190
 JU1190_MARKER: DB = BENCH MARK DISK
 JU1190_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1190_STAMPING: C 11 1935
 JU1190_MARK LOGO: CGS
 JU1190_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1190+STABILITY: SURFACE MOTION
 JU1190
 JU1190  HISTORY     - Date     Condition        Report By
 JU1190  HISTORY     - 1935     MONUMENTED       CGS
 JU1190  HISTORY     - 1964     POOR             CGS
 JU1190  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JU1190  HISTORY     - 20041026 MARK NOT FOUND   USPSQD
 JU1190
 JU1190                          STATION DESCRIPTION
 JU1190
 JU1190'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1190'0.9 MI N FROM SUDLERSVILLE.
 JU1190'0.9 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JU1190'STATION AT SUDERSVILLE, 470 FEET SOUTH OF MILEPOST 17, 34
 JU1190'FEET EAST OF EAST RAIL, 15 FEET SOUTH OF A PRIVATE FIELD ROAD
 JU1190'THAT CROSSES THE TRACKS, AND 3 FEET SOUTH OF A CORNER FENCE
 JU1190'POST.  NOTE-- THE DISK HAS BEEN BROKEN FROM THE STEM, THE
 JU1190'STEM PART REMAINS, ON ITS TOP BEING LEDGEABLE THE CROSS OF THE
 JU1190'CENTER PART OF THE DISK AND A FIGURE 9.
 JU1190
 JU1190                          STATION RECOVERY (1990)
 JU1190
 JU1190'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1190'MARK NOT FOUND.
 JU1190
 JU1190                          STATION RECOVERY (2004)
 JU1190
 JU1190'RECOVERY NOTE BY US POWER SQUADRON 2004 (KN)
 JU1190'DISK IS GONE, BATTERED CONCRETE POST REMAINS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1114 ***********************************************************************
 JV1114  DESIGNATION -  C 110 MDSRC
 JV1114  PID         -  JV1114
 JV1114  STATE/COUNTY-  MD/BALTIMORE
 JV1114  COUNTRY     -  US
 JV1114  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1114
 JV1114                         *CURRENT SURVEY CONTROL
 JV1114  ______________________________________________________________________
 JV1114* NAD 83(1986) POSITION- 39 18 37.     (N) 076 31 45.     (W)   SCALED
 JV1114* NAVD 88 ORTHO HEIGHT -     9.619 (meters)       31.56  (feet) ADJUSTED
 JV1114  ______________________________________________________________________
 JV1114  GEOID HEIGHT    -        -32.885 (meters)                     GEOID18
 JV1114  DYNAMIC HEIGHT  -          9.614 (meters)       31.54  (feet) COMP
 JV1114  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV1114
 JV1114  VERT ORDER      -  FIRST     CLASS I
 JV1114
 JV1114.The horizontal coordinates were scaled from a map and have
 JV1114.an estimated accuracy of +/- 6 seconds.
 JV1114
 JV1114.The orthometric height was determined by differential leveling and
 JV1114.adjusted by the NATIONAL GEODETIC SURVEY
 JV1114.in June 1991.
 JV1114
 JV1114.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1114.GEOID18 height accuracy estimate available here.
 JV1114
 JV1114.Click photographs - Photos may exist for this station.
 JV1114
 JV1114.The dynamic height is computed by dividing the NAVD 88
 JV1114.geopotential number by the normal gravity value computed on the
 JV1114.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1114.degrees latitude (g = 980.6199 gals.).
 JV1114
 JV1114.The modeled gravity was interpolated from observed gravity values.
 JV1114
 JV1114;                    North         East    Units  Estimated Accuracy
 JV1114;SPC MD       -   182,560.      440,610.      MT  (+/- 180 meters Scaled)
 JV1114
 JV1114_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ681523(NAD 83)
 JV1114
 JV1114                          SUPERSEDED SURVEY CONTROL
 JV1114
 JV1114  NGVD 29 (11/26/84)    9.863  (m)           32.36   (f) ADJUSTED    1 1
 JV1114
 JV1114.Superseded values are not recommended for survey control.
 JV1114
 JV1114.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1114.See file dsdata.pdf to determine how the superseded data were derived.
 JV1114
 JV1114_MARKER: DD = SURVEY DISK
 JV1114_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1114_STAMPING: SIG 1965
 JV1114_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1114+STABILITY: SURFACE MOTION
 JV1114
 JV1114  HISTORY     - Date     Condition        Report By
 JV1114  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1114  HISTORY     - 1971     GOOD             NGS
 JV1114  HISTORY     - 20080902 MARK NOT FOUND   MDSHA
 JV1114
 JV1114                          STATION DESCRIPTION
 JV1114
 JV1114'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1114'1 MI S FROM ROSEDALE.
 JV1114'LOCATED NEAR THE BALTIMORE CITY LINE AND PULASKI HIGHWAY (U.S. 40),
 JV1114'42.0 FEET NORTHEAST OF THE PROJECTED CENTERLINE OF 64TH STREET,
 JV1114'26.5 FEET SOUTHEAST OF THE CENTERLINE OF THE SOUTH BOUND LANE
 JV1114'OF PULASKI HIGHWAY, AND 6.0 FEET NORTH OF G AND E POWER POLE
 JV1114'198653, SET IN THE TOP OF A CONCRETE POST FLUSH WITH SURFACE OF
 JV1114'THE GRASS MEDIAN STRIP.
 JV1114
 JV1114                          STATION RECOVERY (1971)
 JV1114
 JV1114'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1114'RECOVERED IN GOOD CONDITION.
 JV1114
 JV1114                          STATION RECOVERY (2008)
 JV1114
 JV1114'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV1114'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1088 ***********************************************************************
 HV1088  DESIGNATION -  C 111
 HV1088  PID         -  HV1088
 HV1088  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1088  COUNTRY     -  US
 HV1088  USGS QUAD   -  PISCATAWAY (2016)
 HV1088
 HV1088                         *CURRENT SURVEY CONTROL
 HV1088  ______________________________________________________________________
 HV1088* NAD 83(1986) POSITION- 38 41 54.     (N) 076 59 12.     (W)   SCALED
 HV1088* NAVD 88 ORTHO HEIGHT -     7.634 (meters)       25.05  (feet) ADJUSTED
 HV1088  ______________________________________________________________________
 HV1088  GEOID HEIGHT    -        -32.533 (meters)                     GEOID18
 HV1088  DYNAMIC HEIGHT  -          7.630 (meters)       25.03  (feet) COMP
 HV1088  MODELED GRAVITY -    980,072.8   (mgal)                       NAVD 88
 HV1088
 HV1088  VERT ORDER      -  SECOND    CLASS 0
 HV1088
 HV1088.The horizontal coordinates were scaled from a map and have
 HV1088.an estimated accuracy of +/- 6 seconds.
 HV1088
 HV1088.The orthometric height was determined by differential leveling and
 HV1088.adjusted by the NATIONAL GEODETIC SURVEY
 HV1088.in June 1991.
 HV1088
 HV1088.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1088.GEOID18 height accuracy estimate available here.
 HV1088
 HV1088.Click photographs - Photos may exist for this station.
 HV1088
 HV1088.The dynamic height is computed by dividing the NAVD 88
 HV1088.geopotential number by the normal gravity value computed on the
 HV1088.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1088.degrees latitude (g = 980.6199 gals.).
 HV1088
 HV1088.The modeled gravity was interpolated from observed gravity values.
 HV1088
 HV1088;                    North         East    Units  Estimated Accuracy
 HV1088;SPC MD       -   114,520.      401,160.      MT  (+/- 180 meters Scaled)
 HV1088
 HV1088_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH272851(NAD 83)
 HV1088
 HV1088                          SUPERSEDED SURVEY CONTROL
 HV1088
 HV1088  NGVD 29 (05/01/89)    7.872  (m)           25.83   (f) ADJUSTED    2 0
 HV1088  NGVD 29 (??/??/87)    7.909  (m)           25.95   (f) SUPERSEDED  2 0
 HV1088
 HV1088.Superseded values are not recommended for survey control.
 HV1088
 HV1088.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1088.See file dsdata.pdf to determine how the superseded data were derived.
 HV1088
 HV1088_MARKER: DD = SURVEY DISK
 HV1088_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1088_SP_SET: BRIDGE
 HV1088_STAMPING: C-111 1966 USCGS
 HV1088_MARK LOGO: MDSRC
 HV1088_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1088
 HV1088  HISTORY     - Date     Condition        Report By
 HV1088  HISTORY     - 1966     MONUMENTED       MDSRC
 HV1088
 HV1088                          STATION DESCRIPTION
 HV1088
 HV1088'DESCRIBED BY MD STATE ROADS COMM 1966
 HV1088'6 MI S FROM OXON HILL.
 HV1088'FROM OXON HILL MARYLAND, PROCEED SOUTH ALONG MARYLAND HIGHWAY
 HV1088'210 FOR 6.0 MILES TO BRIDGE OVER PISCATAWAY CREEK, STATION IS
 HV1088'IN THE NORTH END OF THE WEST SIDE OF BRIDGE, 15.0 FEET WEST OF THE
 HV1088'CENTERLINE OF MARYLAND HIGHWAY 210 SET FLUSH IN A DRILLED HOLE
 HV1088'IN THE BASE OF BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1282 ***********************************************************************
 JV1282  DESIGNATION -  C 112 MDSRC
 JV1282  PID         -  JV1282
 JV1282  STATE/COUNTY-  MD/BALTIMORE
 JV1282  COUNTRY     -  US
 JV1282  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1282
 JV1282                         *CURRENT SURVEY CONTROL
 JV1282  ______________________________________________________________________
 JV1282* NAD 83(1986) POSITION- 39 23 46.     (N) 076 44 51.     (W)   SCALED
 JV1282* NAVD 88 ORTHO HEIGHT -   167.640 (meters)      550.00  (feet) ADJUSTED
 JV1282  ______________________________________________________________________
 JV1282  GEOID HEIGHT    -        -32.237 (meters)                     GEOID18
 JV1282  DYNAMIC HEIGHT  -        167.552 (meters)      549.71  (feet) COMP
 JV1282  MODELED GRAVITY -    980,097.9   (mgal)                       NAVD 88
 JV1282
 JV1282  VERT ORDER      -  SECOND    CLASS 0
 JV1282
 JV1282.The horizontal coordinates were scaled from a map and have
 JV1282.an estimated accuracy of +/- 6 seconds.
 JV1282
 JV1282.The orthometric height was determined by differential leveling and
 JV1282.adjusted by the NATIONAL GEODETIC SURVEY
 JV1282.in June 1991.
 JV1282
 JV1282.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1282.GEOID18 height accuracy estimate available here.
 JV1282
 JV1282.Click photographs - Photos may exist for this station.
 JV1282
 JV1282.The dynamic height is computed by dividing the NAVD 88
 JV1282.geopotential number by the normal gravity value computed on the
 JV1282.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1282.degrees latitude (g = 980.6199 gals.).
 JV1282
 JV1282.The modeled gravity was interpolated from observed gravity values.
 JV1282
 JV1282;                    North         East    Units  Estimated Accuracy
 JV1282;SPC MD       -   192,010.      421,750.      MT  (+/- 180 meters Scaled)
 JV1282
 JV1282_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ495621(NAD 83)
 JV1282
 JV1282                          SUPERSEDED SURVEY CONTROL
 JV1282
 JV1282  NGVD 29 (11/26/84)  167.852  (m)          550.69   (f) ADJUSTED    2 0
 JV1282
 JV1282.Superseded values are not recommended for survey control.
 JV1282
 JV1282.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1282.See file dsdata.pdf to determine how the superseded data were derived.
 JV1282
 JV1282_MARKER: DB = BENCH MARK DISK
 JV1282_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1282_SP_SET: SIGNAL BASE
 JV1282_STAMPING: C-112 1967 USC AND GS
 JV1282_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1282
 JV1282  HISTORY     - Date     Condition        Report By
 JV1282  HISTORY     - 1967     MONUMENTED       MDSRC
 JV1282
 JV1282                          STATION DESCRIPTION
 JV1282
 JV1282'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1282'2 MI NW FROM PIKESVILLE.
 JV1282'FROM THE BRIDGE OVER THE BALTIMORE BELTWAY PROCEED NORTHWEST ALONG
 JV1282'U.S. 140 (REISTERSTOWN ROAD) FOR 1.0 MILE TO MC DONOGH ROAD AND
 JV1282'STATION LOCATED ON THE WEST SIDE OF U.S. 140.  56.7 FEET WEST OF
 JV1282'THE CENTERLINE OF U.S. 140, 18.2 FEET SOUTHWEST OF THE CENTERLINE
 JV1282'OF MC DONOGH ROAD, 5.9 FEET SOUTHWEST OF A POWER POLE AND 10.3
 JV1282'FEET EAST OF A FENCE LINE.  A STANDARD DISK SET IN A DRILLED HOLE
 JV1282'IN THE CONCRETE BASE OF THE SIGNAL LIGHT POLE, STAMPED C-112 1967
 JV1282'U.S.C. AND G.S.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0480 ***********************************************************************
 JW0480  DESIGNATION -  C 113
 JW0480  PID         -  JW0480
 JW0480  STATE/COUNTY-  MD/ALLEGANY
 JW0480  COUNTRY     -  US
 JW0480  USGS QUAD   -  EVITTS CREEK (2016)
 JW0480
 JW0480                         *CURRENT SURVEY CONTROL
 JW0480  ______________________________________________________________________
 JW0480* NAD 83(1986) POSITION- 39 41 29.5    (N) 078 43 41.2    (W)   HD_HELD2
 JW0480* NAVD 88 ORTHO HEIGHT -   261.385 (meters)      857.56  (feet) ADJUSTED
 JW0480  ______________________________________________________________________
 JW0480  GEOID HEIGHT    -        -32.728 (meters)                     GEOID18
 JW0480  DYNAMIC HEIGHT  -        261.232 (meters)      857.06  (feet) COMP
 JW0480  MODELED GRAVITY -    980,037.4   (mgal)                       NAVD 88
 JW0480
 JW0480  VERT ORDER      -  SECOND    CLASS I
 JW0480
 JW0480.The horizontal coordinates were established by autonomous hand held GPS
 JW0480.observations and have an estimated accuracy of +/- 10 meters.
 JW0480
 JW0480.The orthometric height was determined by differential leveling and
 JW0480.adjusted by the NATIONAL GEODETIC SURVEY
 JW0480.in June 1991.
 JW0480
 JW0480.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0480.GEOID18 height accuracy estimate available here.
 JW0480
 JW0480.Click photographs - Photos may exist for this station.
 JW0480
 JW0480.The dynamic height is computed by dividing the NAVD 88
 JW0480.geopotential number by the normal gravity value computed on the
 JW0480.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0480.degrees latitude (g = 980.6199 gals.).
 JW0480
 JW0480.The modeled gravity was interpolated from observed gravity values.
 JW0480
 JW0480;                    North         East    Units  Estimated Accuracy
 JW0480;SPC MD       -   226,183.      251,769.      MT  (+/- 10 meters HH2 GPS)
 JW0480
 JW0480_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9480795988(NAD 83)
 JW0480
 JW0480                          SUPERSEDED SURVEY CONTROL
 JW0480
 JW0480  NGVD 29 (??/??/92)  261.574  (m)          858.18   (f) ADJ UNCH    2 0
 JW0480
 JW0480.Superseded values are not recommended for survey control.
 JW0480
 JW0480.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0480.See file dsdata.pdf to determine how the superseded data were derived.
 JW0480
 JW0480_MARKER: DB = BENCH MARK DISK
 JW0480_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JW0480_SP_SET: CHURCH STEP
 JW0480_STAMPING: C 113 1967
 JW0480_MARK LOGO: CGS
 JW0480_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW0480_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0480_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0480+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2002
 JW0480
 JW0480  HISTORY     - Date     Condition        Report By
 JW0480  HISTORY     - 1967     MONUMENTED       CGS
 JW0480  HISTORY     - 20020529 GOOD             MDSHA
 JW0480
 JW0480                          STATION DESCRIPTION
 JW0480
 JW0480'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JW0480'3.1 MI N FROM CUMBERLAND.
 JW0480'ABOUT 3.1 MILES NORTH ALONG U.S. HIGHWAY 220 FROM THE JUNCTION OF
 JW0480'U.S. HIGHWAY 220 AND 40, SET IN THE TOP OF BOTTOM STEP OF THE MAIN
 JW0480'ENTRANCE TO THE ZION METHODIST CHURCH, 79.0 FEET NORTHWEST OF THE
 JW0480'CENTERLINE OF HIGHWAY, 1.5 FEET SOUTHEAST OF CHURCH, 0.4 FOOT
 JW0480'SOUTHWEST OF THE SOUTHWEST END OF THE SECOND FROM BOTTOM STEP
 JW0480'AND 8.0 FEET ABOVE HIGHWAY.
 JW0480
 JW0480                          STATION RECOVERY (2002)
 JW0480
 JW0480'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JW0480'THE STATION WAS RECOVERED IN GOOD CONDITION. U.S. HIGHWAY 220 IS NOW
 JW0480'FREDERICK STREET AND BEDFORD ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1843 ***********************************************************************
 JU1843  DESIGNATION -  C 114
 JU1843  PID         -  JU1843
 JU1843  STATE/COUNTY-  MD/CECIL
 JU1843  COUNTRY     -  US
 JU1843  USGS QUAD   -  NORTH EAST (2016)
 JU1843
 JU1843                         *CURRENT SURVEY CONTROL
 JU1843  ______________________________________________________________________
 JU1843* NAD 83(1986) POSITION- 39 30 45.     (N) 075 53 07.     (W)   SCALED
 JU1843* NAVD 88 ORTHO HEIGHT -     5.063 (meters)       16.61  (feet) ADJUSTED
 JU1843  ______________________________________________________________________
 JU1843  GEOID HEIGHT    -        -33.317 (meters)                     GEOID18
 JU1843  DYNAMIC HEIGHT  -          5.061 (meters)       16.60  (feet) COMP
 JU1843  MODELED GRAVITY -    980,123.9   (mgal)                       NAVD 88
 JU1843
 JU1843  VERT ORDER      -  FIRST     CLASS II
 JU1843
 JU1843.The horizontal coordinates were scaled from a map and have
 JU1843.an estimated accuracy of +/- 6 seconds.
 JU1843
 JU1843.The orthometric height was determined by differential leveling and
 JU1843.adjusted by the NATIONAL GEODETIC SURVEY
 JU1843.in June 1991.
 JU1843
 JU1843.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1843.GEOID18 height accuracy estimate available here.
 JU1843
 JU1843.Click photographs - Photos may exist for this station.
 JU1843
 JU1843.The dynamic height is computed by dividing the NAVD 88
 JU1843.geopotential number by the normal gravity value computed on the
 JU1843.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1843.degrees latitude (g = 980.6199 gals.).
 JU1843
 JU1843.The modeled gravity was interpolated from observed gravity values.
 JU1843
 JU1843;                    North         East    Units  Estimated Accuracy
 JU1843;SPC MD       -   205,490.      495,860.      MT  (+/- 180 meters Scaled)
 JU1843
 JU1843_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ238740(NAD 83)
 JU1843
 JU1843                          SUPERSEDED SURVEY CONTROL
 JU1843
 JU1843  NGVD 29 (11/26/84)    5.300  (m)           17.39   (f) ADJUSTED    1 2
 JU1843
 JU1843.Superseded values are not recommended for survey control.
 JU1843
 JU1843.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1843.See file dsdata.pdf to determine how the superseded data were derived.
 JU1843
 JU1843_MARKER: DB = BENCH MARK DISK
 JU1843_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JU1843_STAMPING: C 114 1971
 JU1843_MARK LOGO: CGS
 JU1843_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1843
 JU1843  HISTORY     - Date     Condition        Report By
 JU1843  HISTORY     - 1971     MONUMENTED       NGS
 JU1843  HISTORY     - 1984     GOOD             USPSQD
 JU1843
 JU1843                          STATION DESCRIPTION
 JU1843
 JU1843'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1843'4.6 MI SW FROM CHESAPEAKE CITY.
 JU1843'ABOUT 1.7 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1843'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1843'DELAWARE CANAL AT CHESAPEAKE CITY, THENCE 2.95 MILES WEST ALONG
 JU1843'COURT HOUSE POINT ROAD, AT COURT HOUSE POINT, 24 FEET SOUTHWEST
 JU1843'OF THE CENTER LINE OF THE ROAD, 310.0 FEET NORTHWEST OF THE
 JU1843'WEST CORNER OF A PORCH ON A HOUSE, 33.0 FEET NORTH OF THE
 JU1843'NORTHEAST CORNER OF A BUILDING WITH GALVANIZED SIDING, 17 FEET
 JU1843'SOUTHEAST OF THE SOUTHEAST BANK OF THE ELK RIVER, 13 FEET
 JU1843'NORTHWEST OF POWER POLE NUMBER 13289, 1.7 FEET SOUTHEAST OF THE
 JU1843'BASE OF A GUY WIRE, 0.8 FOOT NORTHEAST OF A METAL WITNESS POST,
 JU1843'AND ON THE TOP OF A COPPER COATED ROD WHICH IS 1 INCH BELOW
 JU1843'GROUND AND IS PROTECTED BY A 6-INCH METAL PIPE THAT IS LEVEL WITH
 JU1843'THE GROUND.  THE ROD WAS DRIVEN TO A DEPTH OF 48 FEET.
 JU1843'NOTE-- THIS MARK IS NOTE TO BE VISITED WITHOUT OBTAINING
 JU1843'PERMISSION FROM THE OWNER OF THE PROPERTY.
 JU1843
 JU1843                          STATION RECOVERY (1984)
 JU1843
 JU1843'RECOVERY NOTE BY US POWER SQUADRON 1984
 JU1843'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0259 ***********************************************************************
 JV0259  DESIGNATION -  C 115
 JV0259  PID         -  JV0259
 JV0259  STATE/COUNTY-  MD/KENT
 JV0259  COUNTRY     -  US
 JV0259  USGS QUAD   -  BETTERTON (2017)
 JV0259
 JV0259                         *CURRENT SURVEY CONTROL
 JV0259  ______________________________________________________________________
 JV0259* NAD 83(1986) POSITION- 39 19 34.6    (N) 076 02 05.5    (W)   HD_HELD2
 JV0259* NAVD 88 ORTHO HEIGHT -    22.990 (meters)       75.43  (feet) ADJUSTED
 JV0259  ______________________________________________________________________
 JV0259  GEOID HEIGHT    -        -33.357 (meters)                     GEOID18
 JV0259  DYNAMIC HEIGHT  -         22.978 (meters)       75.39  (feet) COMP
 JV0259  MODELED GRAVITY -    980,117.0   (mgal)                       NAVD 88
 JV0259
 JV0259  VERT ORDER      -  FIRST     CLASS II
 JV0259
 JV0259.The horizontal coordinates were established by autonomous hand held GPS
 JV0259.observations and have an estimated accuracy of +/- 10 meters.
 JV0259
 JV0259.The orthometric height was determined by differential leveling and
 JV0259.adjusted by the NATIONAL GEODETIC SURVEY
 JV0259.in June 1991.
 JV0259
 JV0259.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0259.GEOID18 height accuracy estimate available here.
 JV0259
 JV0259.Click photographs - Photos may exist for this station.
 JV0259
 JV0259.The dynamic height is computed by dividing the NAVD 88
 JV0259.geopotential number by the normal gravity value computed on the
 JV0259.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0259.degrees latitude (g = 980.6199 gals.).
 JV0259
 JV0259.The modeled gravity was interpolated from observed gravity values.
 JV0259
 JV0259;                    North         East    Units  Estimated Accuracy
 JV0259;SPC MD       -   184,668.      483,218.      MT  (+/- 10 meters HH2 GPS)
 JV0259
 JV0259_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1080153495(NAD 83)
 JV0259
 JV0259                          SUPERSEDED SURVEY CONTROL
 JV0259
 JV0259  NGVD 29 (11/26/84)   23.232  (m)           76.22   (f) ADJUSTED    1 2
 JV0259
 JV0259.Superseded values are not recommended for survey control.
 JV0259
 JV0259.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0259.See file dsdata.pdf to determine how the superseded data were derived.
 JV0259
 JV0259_MARKER: DB = BENCH MARK DISK
 JV0259_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0259+WITH SETTING: INTO GROUND
 JV0259_STAMPING: C 115 1971
 JV0259_MARK LOGO: CGS
 JV0259_PROJECTION: FLUSH
 JV0259_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0259_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0259+SATELLITE: SATELLITE OBSERVATIONS - February 02, 2022
 JV0259
 JV0259  HISTORY     - Date     Condition        Report By
 JV0259  HISTORY     - 1971     MONUMENTED       NGS
 JV0259  HISTORY     - 1990     GOOD             USPSQD
 JV0259  HISTORY     - 20011228 GOOD             USPSQD
 JV0259  HISTORY     - 20130503 GOOD             ARCSHE
 JV0259  HISTORY     - 20220202 GOOD             MDSHA
 JV0259
 JV0259                          STATION DESCRIPTION
 JV0259
 JV0259'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0259'0.6 MI E FROM STILL POND.
 JV0259'ABOUT 0.6 MILE EAST ALONG STATE HIGHWAY 566 FROM THE JUNCTION
 JV0259'OF STATE HIGHWAY 292 AT STILL POND, ABOUT 0.6 MILE WEST OF THE
 JV0259'JUNCTION OF THE HIGHWAY AND STATE HIGHWAY 298, 44 FEET
 JV0259'SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, 222.3 FEET SOUTH
 JV0259'AND ACROSS THE HIGHWAY FROM THE SOUTHEAST CORNER OF A PORCH ON A
 JV0259'FARMHOUSE, 138 FEET SOUTHEAST OF THE EXTENDED CENTER LINE OF
 JV0259'A DRIVEWAY TO THE HOUSE, 4 1/2 FEET SOUTHEAST OF TELEPHONE
 JV0259'POLE NUMBER 18, 1.5 FEET NORTHWEST OF A METAL WITNESS POST, ABOUT
 JV0259'LEVEL WITH THE HIGHWAY, AND ON THE TOP OF A 4-FOOT SECTION OF
 JV0259'COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE
 JV0259'DISK PROJECTS 1 INCH AND IS PROTECTED BY A 4-INCH METAL PIPE
 JV0259'PROJECTING 1 1/2 INCHES.
 JV0259
 JV0259                          STATION RECOVERY (1990)
 JV0259
 JV0259'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0259'RECOVERED IN GOOD CONDITION.
 JV0259
 JV0259                          STATION RECOVERY (2001)
 JV0259
 JV0259'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0259'RECOVERED IN GOOD CONDITION.
 JV0259
 JV0259                          STATION RECOVERY (2013)
 JV0259
 JV0259'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JV0259'THE MARK IS 4.3 FT (1.3 M) SOUTHEAST OF A FIBERGLASS WITNESS POST.
 JV0259
 JV0259                          STATION RECOVERY (2022)
 JV0259
 JV0259'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 JV0259'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1864 ***********************************************************************
 JU1864  DESIGNATION -  C 118
 JU1864  PID         -  JU1864
 JU1864  STATE/COUNTY-  MD/CECIL
 JU1864  COUNTRY     -  US
 JU1864  USGS QUAD   -  ELKTON (2016)
 JU1864
 JU1864                         *CURRENT SURVEY CONTROL
 JU1864  ______________________________________________________________________
 JU1864* NAD 83(1986) POSITION- 39 35 53.9    (N) 075 49 18.6    (W)   HD_HELD2
 JU1864* NAVD 88 ORTHO HEIGHT -    17.145 (meters)       56.25  (feet) ADJUSTED
 JU1864  ______________________________________________________________________
 JU1864  GEOID HEIGHT    -        -33.156 (meters)                     GEOID18
 JU1864  DYNAMIC HEIGHT  -         17.136 (meters)       56.22  (feet) COMP
 JU1864  MODELED GRAVITY -    980,142.4   (mgal)                       NAVD 88
 JU1864
 JU1864  VERT ORDER      -  FIRST     CLASS I
 JU1864
 JU1864.The horizontal coordinates were established by autonomous hand held GPS
 JU1864.observations and have an estimated accuracy of +/- 10 meters.
 JU1864
 JU1864.The orthometric height was determined by differential leveling and
 JU1864.adjusted by the NATIONAL GEODETIC SURVEY
 JU1864.in June 1991.
 JU1864
 JU1864.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1864.GEOID18 height accuracy estimate available here.
 JU1864
 JU1864.Click photographs - Photos may exist for this station.
 JU1864
 JU1864.The dynamic height is computed by dividing the NAVD 88
 JU1864.geopotential number by the normal gravity value computed on the
 JU1864.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1864.degrees latitude (g = 980.6199 gals.).
 JU1864
 JU1864.The modeled gravity was interpolated from observed gravity values.
 JU1864
 JU1864;                    North         East    Units  Estimated Accuracy
 JU1864;SPC MD       -   215,083.      501,195.      MT  (+/- 10 meters HH2 GPS)
 JU1864
 JU1864_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2943883497(NAD 83)
 JU1864
 JU1864                          SUPERSEDED SURVEY CONTROL
 JU1864
 JU1864  NGVD 29 (11/26/84)   17.381  (m)           57.02   (f) ADJUSTED    1 1
 JU1864
 JU1864.Superseded values are not recommended for survey control.
 JU1864
 JU1864.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1864.See file dsdata.pdf to determine how the superseded data were derived.
 JU1864
 JU1864_MARKER: DB = BENCH MARK DISK
 JU1864_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JU1864+WITH SETTING: INTO GROUND
 JU1864_STAMPING: C 118 1971
 JU1864_MARK LOGO: CGS
 JU1864_PROJECTION: RECESSED 15 CENTIMETERS
 JU1864_MAGNETIC: A = STEEL ROD ADJACENT TO MONUMENT
 JU1864_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1864+STABILITY: SURFACE MOTION
 JU1864_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1864+SATELLITE: SATELLITE OBSERVATIONS - October 02, 2017
 JU1864
 JU1864  HISTORY     - Date     Condition        Report By
 JU1864  HISTORY     - 1971     MONUMENTED       NGS
 JU1864  HISTORY     - 1982     GOOD             LOCSUR
 JU1864  HISTORY     - 1984     GOOD             NGS
 JU1864  HISTORY     - 1985     MARK NOT FOUND   USPSQD
 JU1864  HISTORY     - 20070501 GOOD             MDSHA
 JU1864  HISTORY     - 20070606 GOOD             MDSHA
 JU1864  HISTORY     - 20140820 GOOD             JARICE
 JU1864  HISTORY     - 20171002 GOOD             GPI
 JU1864
 JU1864                          STATION DESCRIPTION
 JU1864
 JU1864'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1864'0.4 MI E FROM ELKTON.
 JU1864'ABOUT 0.35 MILE EAST ALONG U.S. HIGHWAY 40 FROM THE JUNCTION OF
 JU1864'U.S. HIGHWAY 213 AT ELKTON, 60 FEET SOUTHWEST OF THE CENTER OF
 JU1864'THE JUNCTION OF THE SOUTH LANES OF THE HIGHWAY AND J. GALLAHER
 JU1864'STREET WHICH LEADS SOUTH, 42 FEET SOUTH OF THE CENTER LINE OF THE
 JU1864'SOUTH LANES OF THE HIGHWAY, 46 FEET WEST OF THE CENTER LINE OF
 JU1864'THE STREET, 4 FEET WEST OF POWER POLE NUMBER 7, 3.5 FEET EAST OF
 JU1864'A METAL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, AND ON THE
 JU1864'TOP OF A 4-FOOT SECTION OF COPPER COATED ROD THAT IS ATTACHED
 JU1864'TO A METAL BASE PLATE.  THE DISK IS 1 INCH BELOW THE SURFACE OF
 JU1864'THE GROUND AND IS PROTECTED BY A 5-INCH METAL PIPE THAT IS LEVEL
 JU1864'WITH THE GROUND.
 JU1864
 JU1864                          STATION RECOVERY (1982)
 JU1864
 JU1864'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
 JU1864'RECOVERED IN GOOD CONDITION.
 JU1864
 JU1864                          STATION RECOVERY (1984)
 JU1864
 JU1864'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 JU1864'RECOVERED IN GOOD CONDITION.
 JU1864
 JU1864                          STATION RECOVERY (1985)
 JU1864
 JU1864'RECOVERY NOTE BY US POWER SQUADRON 1985
 JU1864'MARK NOT FOUND.
 JU1864
 JU1864                          STATION RECOVERY (2007)
 JU1864
 JU1864'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (DCS)
 JU1864'THE MARK IS NOW 5.3 FEET WEST OF CONNECT V POWER POLE NUMBERED 40877
 JU1864'38085 (ALSO MARKED CONOWINGO 27461), AND 9.5 FEET NORTHEAST OF THE END
 JU1864'OF THE CURB IN THE CHASE HOME FINANCE PARKING LOT. THE METAL WITNESS
 JU1864'POST IS GONE.
 JU1864
 JU1864                          STATION RECOVERY (2007)
 JU1864
 JU1864'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JU1864'THE MARK IS LOCATED ABOUT 11.7 MI (18.83 KM) NORTH-NORTHWEST OF
 JU1864'MIDDLETOWN, 6.4 MI (10.3 KM) EAST OF NORTH EAST AND 0.8 MI (1.29 KM)
 JU1864'SOUTHEAST OF ELKTON.
 JU1864'
 JU1864'TO REACH THE MARK FROM THE INTERSECTION OF U.S.HIGHWAY 40 AND STATE
 JU1864'HIGHWAY 213, PROCEED EAST ON U.S.HIGHWAY 40 FOR 0.34 MILES (0.55 KM)
 JU1864'TO GALLAGHER STREET AND THE MARK ON THE RIGHT.
 JU1864'
 JU1864'IT IS 42.8 FEET (13.0 M) SOUTH OF THE CENTER LINE OF THE EASTBOUND
 JU1864'LANES OF THE HIGHWAY, 45.0 FEET (13.7 M) WEST OF THE CENTER LINE OF
 JU1864'GALLAGHER STREET, 6.0 FEET (1.8 M) WEST OF A POWER POLE NUMBER 27461,
 JU1864'81.4 FEET (24.8 M) NORTHEAST OF THE NORTHEAST CORNER OF A 1 STORY
 JU1864'BRICK BUILDING AND 4.4 FEET (1.3 M) SOUTHEAST OF A METAL WITNESS POST.
 JU1864
 JU1864                          STATION RECOVERY (2014)
 JU1864
 JU1864'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JU1864'RECOVERED AS DESCRIBED.
 JU1864
 JU1864                          STATION RECOVERY (2017)
 JU1864
 JU1864'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2017 (LJB)
 JU1864'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0611 ***********************************************************************
 HU0611  DESIGNATION -  C 119
 HU0611  PID         -  HU0611
 HU0611  STATE/COUNTY-  MD/WICOMICO
 HU0611  COUNTRY     -  US
 HU0611  USGS QUAD   -  DELMAR (2016)
 HU0611
 HU0611                         *CURRENT SURVEY CONTROL
 HU0611  ______________________________________________________________________
 HU0611* NAD 83(1986) POSITION- 38 23 23.     (N) 075 37 23.     (W)   SCALED
 HU0611* NAVD 88 ORTHO HEIGHT -    11.198 (meters)       36.74  (feet) ADJUSTED
 HU0611  ______________________________________________________________________
 HU0611  GEOID HEIGHT    -        -35.767 (meters)                     GEOID18
 HU0611  DYNAMIC HEIGHT  -         11.191 (meters)       36.72  (feet) COMP
 HU0611  MODELED GRAVITY -    980,007.9   (mgal)                       NAVD 88
 HU0611
 HU0611  VERT ORDER      -  FIRST     CLASS II
 HU0611
 HU0611.The horizontal coordinates were scaled from a map and have
 HU0611.an estimated accuracy of +/- 6 seconds.
 HU0611
 HU0611.The orthometric height was determined by differential leveling and
 HU0611.adjusted by the NATIONAL GEODETIC SURVEY
 HU0611.in June 1991.
 HU0611
 HU0611.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0611.GEOID18 height accuracy estimate available here.
 HU0611
 HU0611.Click photographs - Photos may exist for this station.
 HU0611
 HU0611.The dynamic height is computed by dividing the NAVD 88
 HU0611.geopotential number by the normal gravity value computed on the
 HU0611.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0611.degrees latitude (g = 980.6199 gals.).
 HU0611
 HU0611.The modeled gravity was interpolated from observed gravity values.
 HU0611
 HU0611;                    North         East    Units  Estimated Accuracy
 HU0611;SPC MD       -    81,170.      520,290.      MT  (+/- 180 meters Scaled)
 HU0611
 HU0611_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH455492(NAD 83)
 HU0611
 HU0611                          SUPERSEDED SURVEY CONTROL
 HU0611
 HU0611  NGVD 29 (11/26/84)   11.441  (m)           37.54   (f) ADJUSTED    1 2
 HU0611
 HU0611.Superseded values are not recommended for survey control.
 HU0611
 HU0611.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0611.See file dsdata.pdf to determine how the superseded data were derived.
 HU0611
 HU0611_MARKER: DB = BENCH MARK DISK
 HU0611_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU0611+WITH SETTING: INTO GROUND
 HU0611_STAMPING: C 119 1971
 HU0611_MARK LOGO: CGS
 HU0611_PROJECTION: FLUSH
 HU0611_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0611+STABILITY: SURFACE MOTION
 HU0611
 HU0611  HISTORY     - Date     Condition        Report By
 HU0611  HISTORY     - 1971     MONUMENTED       NGS
 HU0611
 HU0611                          STATION DESCRIPTION
 HU0611
 HU0611'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0611'2.4 MI NW FROM SALISBURY.
 HU0611'ABOUT 0.1 MILE NORTH ALONG DIVISION STREET FROM THE COURTHOUSE AT
 HU0611'SALISBURY, THENCE 2.3 MILES NORTHWEST ALONG U.S. HIGHWAY 50, 0.1
 HU0611'MILE SOUTHEAST OF THE JUNCTION OF THE HIGHWAY AND MARQUIS AVENUE,
 HU0611'85 FEET SOUTHWEST OF THE WEST CORNER OF A 2 STORY WHITE FRAME
 HU0611'HOUSE, 34 1/2 FEET NORTHEAST OF THE CENTER LINE OF THE NORTHEAST
 HU0611'LANE OF THE HIGHWAY, 32 1/2 FEET WEST OF A 26-INCH HICKORY TREE,
 HU0611'7 FEET NORTHWEST OF THE CENTER LINE OF A DRIVEWAY, 5 FEET
 HU0611'SOUTHEAST OF TELEPHONE POLE NO. 1459-50L, 1/2 FOOT SOUTHWEST OF A
 HU0611'HEDGE, ABOUT LEVEL WITH THE HIGHWAY, AND ON THE TOP OF A 4 FOOT
 HU0611'COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.
 HU0611'THE DISK IS ONE INCH BELOW THE LEVEL OF THE GROUND AND ENCASED IN
 HU0611'A CONCRETE PIPE THAT IS FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1009 ***********************************************************************
 HU1009  DESIGNATION -  C 120
 HU1009  PID         -  HU1009
 HU1009  STATE/COUNTY-  MD/DORCHESTER
 HU1009  COUNTRY     -  US
 HU1009  USGS QUAD   -  EAST NEW MARKET (2016)
 HU1009
 HU1009                         *CURRENT SURVEY CONTROL
 HU1009  ______________________________________________________________________
 HU1009* NAD 83(1986) POSITION- 38 33 10.7    (N) 075 57 57.2    (W)   HD_HELD2
 HU1009* NAVD 88 ORTHO HEIGHT -     6.638 (meters)       21.78  (feet) ADJUSTED
 HU1009  ______________________________________________________________________
 HU1009  GEOID HEIGHT    -        -35.235 (meters)                     GEOID18
 HU1009  DYNAMIC HEIGHT  -          6.634 (meters)       21.77  (feet) COMP
 HU1009  MODELED GRAVITY -    980,016.9   (mgal)                       NAVD 88
 HU1009
 HU1009  VERT ORDER      -  FIRST     CLASS II
 HU1009
 HU1009.The horizontal coordinates were established by autonomous hand held GPS
 HU1009.observations and have an estimated accuracy of +/- 10 meters.
 HU1009
 HU1009.The orthometric height was determined by differential leveling and
 HU1009.adjusted by the NATIONAL GEODETIC SURVEY
 HU1009.in June 1991.
 HU1009
 HU1009.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1009.GEOID18 height accuracy estimate available here.
 HU1009
 HU1009.Click photographs - Photos may exist for this station.
 HU1009
 HU1009.The dynamic height is computed by dividing the NAVD 88
 HU1009.geopotential number by the normal gravity value computed on the
 HU1009.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1009.degrees latitude (g = 980.6199 gals.).
 HU1009
 HU1009.The modeled gravity was interpolated from observed gravity values.
 HU1009
 HU1009;                    North         East    Units  Estimated Accuracy
 HU1009;SPC MD       -    98,894.      490,137.      MT  (+/- 10 meters HH2 GPS)
 HU1009
 HU1009_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1583767613(NAD 83)
 HU1009
 HU1009                          SUPERSEDED SURVEY CONTROL
 HU1009
 HU1009  NGVD 29 (11/26/84)    6.872  (m)           22.55   (f) ADJUSTED    1 2
 HU1009
 HU1009.Superseded values are not recommended for survey control.
 HU1009
 HU1009.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1009.See file dsdata.pdf to determine how the superseded data were derived.
 HU1009
 HU1009_MARKER: DB = BENCH MARK DISK
 HU1009_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1009+WITH SETTING: INTO GROUND
 HU1009_STAMPING: C 120 1971
 HU1009_MARK LOGO: CGS
 HU1009_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1009+STABILITY: SURFACE MOTION
 HU1009_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1009+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2002
 HU1009
 HU1009  HISTORY     - Date     Condition        Report By
 HU1009  HISTORY     - 1971     MONUMENTED       NGS
 HU1009  HISTORY     - 20021129 GOOD             USPSQD
 HU1009
 HU1009                          STATION DESCRIPTION
 HU1009
 HU1009'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU1009'1.3 MI NW FROM LINKWOOD.
 HU1009'ABOUT 1.3 MILES NORTHWEST ALONG U.S. HIGHWAY 50 FROM THE POST
 HU1009'OFFICE AT LINKWOOD, 0.15 MILE NORTHWEST OF THE JUNCTION OF BEAVER
 HU1009'NECK VILLAGE ROAD, 62 FEET NORTHEAST OF THE CENTER LINE OF THE
 HU1009'NORTHEAST LANES OF THE HIGHWAY, 257 FEET NORTHWEST OF THE MOST
 HU1009'NORTHWESTERLY PINE TREE IN A ROW OF TREES, 6 FEET SOUTHEAST OF
 HU1009'POWER POLE NUMBER 31B-31, 1.6 FEET NORTHWEST OF A METAL WITNESS
 HU1009'POST, ABOUT 3 FEET BELOW THE LEVEL OF THE HIGHWAY, AND ON THE
 HU1009'TOP OF A 4-FOOT SECTION OF COPPER COATED ROD THAT IS ATTACHED
 HU1009'TO A METAL BASE PLATE.  THE DISK IS 2 INCHES BELOW THE SURFACE OF
 HU1009'THE GROUND AND IS PROTECTED BY A 4-INCH ORANGEBURG PIPE THAT IS
 HU1009'1 INCH BELOW THE GROUND.
 HU1009
 HU1009                          STATION RECOVERY (2002)
 HU1009
 HU1009'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HU1009'METAL WITNESS POST NOT FOUND, SHREDDED REMAINS OF A CARSONSITE POST
 HU1009'FOUND 1.5 FEET E OF MARK. POWER POLE 31B-31 HAS BEEN RENUMBERED
 HU1009'501-61.  MARK IS 4 INCHES BELOW SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0440 ***********************************************************************
 JV0440  DESIGNATION -  C 121
 JV0440  PID         -  JV0440
 JV0440  STATE/COUNTY-  MD/BALTIMORE
 JV0440  COUNTRY     -  US
 JV0440  USGS QUAD   -  MIDDLE RIVER (2016)
 JV0440
 JV0440                         *CURRENT SURVEY CONTROL
 JV0440  ______________________________________________________________________
 JV0440* NAD 83(1986) POSITION- 39 21 38.     (N) 076 27 14.     (W)   SCALED
 JV0440* NAVD 88 ORTHO HEIGHT -    26.823 (meters)       88.00  (feet) ADJUSTED
 JV0440  ______________________________________________________________________
 JV0440  GEOID HEIGHT    -        -32.947 (meters)                     GEOID18
 JV0440  DYNAMIC HEIGHT  -         26.808 (meters)       87.95  (feet) COMP
 JV0440  MODELED GRAVITY -    980,104.6   (mgal)                       NAVD 88
 JV0440  OBS GRAVITY     -    980,099.4   (mgal)                       GRAV_OBS
 JV0440
 JV0440  VERT ORDER      -  FIRST     CLASS I
 JV0440
 JV0440.The horizontal coordinates were scaled from a map and have
 JV0440.an estimated accuracy of +/- 6 seconds.
 JV0440
 JV0440.The orthometric height was determined by differential leveling and
 JV0440.adjusted by the NATIONAL GEODETIC SURVEY
 JV0440.in June 1991.
 JV0440
 JV0440.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0440.GEOID18 height accuracy estimate available here.
 JV0440
 JV0440.Click photographs - Photos may exist for this station.
 JV0440
 JV0440.The dynamic height is computed by dividing the NAVD 88
 JV0440.geopotential number by the normal gravity value computed on the
 JV0440.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0440.degrees latitude (g = 980.6199 gals.).
 JV0440
 JV0440.The modeled gravity was interpolated from observed gravity values.
 JV0440
 JV0440.The observed gravity was obtained from relative gravimeter ties
 JV0440.to the IGSN71 gravity network.
 JV0440
 JV0440;                    North         East    Units  Estimated Accuracy
 JV0440;SPC MD       -   188,170.      447,070.      MT  (+/- 180 meters Scaled)
 JV0440
 JV0440_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ747577(NAD 83)
 JV0440
 JV0440                          SUPERSEDED SURVEY CONTROL
 JV0440
 JV0440  NGVD 29 (11/26/84)   27.067  (m)           88.80   (f) ADJUSTED    1 1
 JV0440
 JV0440.Superseded values are not recommended for survey control.
 JV0440
 JV0440.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0440.See file dsdata.pdf to determine how the superseded data were derived.
 JV0440
 JV0440_STAMPING: C 121 1971
 JV0440_MARK LOGO: CGS
 JV0440
 JV0440  HISTORY     - Date     Condition        Report By
 JV0440  HISTORY     - 1971     MONUMENTED       NGS
 JV0440  HISTORY     - 20040302 MARK NOT FOUND   URS
 JV0440  HISTORY     - 20100627 MARK NOT FOUND   MDSHA
 JV0440
 JV0440                          STATION DESCRIPTION
 JV0440
 JV0440'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0440'3.1 MI NE FROM GOLDEN RING.
 JV0440'ABOUT 3.2 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE
 JV0440'JUNIOR HIGH SCHOOL AT GOLDEN RING, NEAR THE JUNCTION OF A
 JV0440'DRIVEWAY LEADING SOUTHEAST TO THE LEO J. UMERLEY, INC. BUILDING,
 JV0440'51 FEET SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, 33 FEET
 JV0440'NORTHEAST OF THE NORTHEAST CURB OF THE DRIVEWAY, 32 FEET
 JV0440'SOUTHEAST OF POWER POLE NUMBER 327435, 1.8 FEET NORTHWEST OF
 JV0440'THE NORTH CORNER OF THE FENCE AROUND THE UMERLEY PROPERTY,
 JV0440'ABOUT LEVEL WITH THE HIGHWAY, AND ON THE TOP OF A COPPER COATED
 JV0440'ROD WHICH IS 1 INCH BELOW THE SURFACE OF THE GROUND AND IS
 JV0440'PROTECTED BY A 6-INCH TILE PROJECTING 1 INCH.  THE ROD WAS
 JV0440'DRIVEN TO REFUSAL AT A DEPTH OF 12 FEET.
 JV0440
 JV0440                          STATION RECOVERY (2004)
 JV0440
 JV0440'RECOVERY NOTE BY URS COMPANY 2004
 JV0440'MARK NOT FOUND.
 JV0440
 JV0440                          STATION RECOVERY (2010)
 JV0440
 JV0440'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (DCS)
 JV0440'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0293 ***********************************************************************
 JV0293  DESIGNATION -  C 122
 JV0293  PID         -  JV0293
 JV0293  STATE/COUNTY-  MD/QUEEN ANNES
 JV0293  COUNTRY     -  US
 JV0293  USGS QUAD   -  CENTREVILLE (2017)
 JV0293
 JV0293                         *CURRENT SURVEY CONTROL
 JV0293  ______________________________________________________________________
 JV0293* NAD 83(2011) POSITION- 39 07 04.04050(N) 076 01 02.29090(W)   ADJUSTED
 JV0293* NAD 83(2011) ELLIP HT-   -16.124 (meters)        (06/27/12)   ADJUSTED
 JV0293* NAD 83(2011) EPOCH   -  2010.00
 JV0293* NAVD 88 ORTHO HEIGHT -    17.533 (meters)       57.52  (feet) ADJUSTED
 JV0293  ______________________________________________________________________
 JV0293  GEOID HEIGHT    -        -33.667 (meters)                     GEOID18
 JV0293  NAD 83(2011) X  -  1,197,289.139 (meters)                     COMP
 JV0293  NAD 83(2011) Y  - -4,808,249.945 (meters)                     COMP
 JV0293  NAD 83(2011) Z  -  4,002,460.762 (meters)                     COMP
 JV0293  LAPLACE CORR    -         -3.09  (seconds)                    DEFLEC18
 JV0293  DYNAMIC HEIGHT  -         17.524 (meters)       57.49  (feet) COMP
 JV0293  MODELED GRAVITY -    980,101.8   (mgal)                       NAVD 88
 JV0293
 JV0293  VERT ORDER      -  FIRST     CLASS II
 JV0293
 JV0293  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0293  Standards:
 JV0293         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0293            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0293  -------------------------------------------------------------------
 JV0293  NETWORK    0.57   1.14           0.26   0.20   0.58     -0.07697996
 JV0293  -------------------------------------------------------------------
 JV0293  Click here for local accuracies and other accuracy information.
 JV0293
 JV0293.The horizontal coordinates were established by GPS observations
 JV0293.and adjusted by the National Geodetic Survey in June 2012.
 JV0293
 JV0293.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0293.been affixed to the stable North American tectonic plate. See 
 JV0293.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0293
 JV0293.The horizontal coordinates are valid at the epoch date displayed above
 JV0293.which is a decimal equivalence of Year/Month/Day.
 JV0293
 JV0293.The orthometric height was determined by differential leveling and
 JV0293.adjusted by the NATIONAL GEODETIC SURVEY
 JV0293.in June 1991.
 JV0293
 JV0293.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0293.GEOID18 height accuracy estimate available here.
 JV0293
 JV0293.Click photographs - Photos may exist for this station.
 JV0293
 JV0293.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0293
 JV0293.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0293
 JV0293.The ellipsoidal height was determined by GPS observations
 JV0293.and is referenced to NAD 83.
 JV0293
 JV0293.The dynamic height is computed by dividing the NAVD 88
 JV0293.geopotential number by the normal gravity value computed on the
 JV0293.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0293.degrees latitude (g = 980.6199 gals.).
 JV0293
 JV0293.The modeled gravity was interpolated from observed gravity values.
 JV0293
 JV0293. The following values were computed from the NAD 83(2011) position.
 JV0293
 JV0293;                    North         East     Units Scale Factor Converg.
 JV0293;SPC MD       -   161,539.563   484,981.034   MT  0.99995874   +0 37 00.4
 JV0293;SPC MD       -   529,984.38  1,591,141.94   sFT  0.99995874   +0 37 00.4
 JV0293;UTM  18      - 4,330,340.503   412,055.235   MT  0.99969523   -0 38 30.7
 JV0293
 JV0293!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0293!SPC MD       -   1.00000253  x   0.99995874  =   0.99996127
 JV0293!UTM  18      -   1.00000253  x   0.99969523  =   0.99969776
 JV0293
 JV0293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1205530340(NAD 83)
 JV0293
 JV0293                          SUPERSEDED SURVEY CONTROL
 JV0293
 JV0293  NAD 83(2007)-  39 07 04.04070(N)    076 01 02.29166(W) AD(2002.00) 0
 JV0293  ELLIP H (02/10/07)  -16.095  (m)                       GP(2002.00)    
 JV0293  NAD 83(1991)-  39 07 04.04069(N)    076 01 02.29177(W) AD(       ) A
 JV0293  ELLIP H (02/12/02)  -16.090  (m)                       GP(       ) 4 1
 JV0293  NAVD 88              17.53   (m)           57.5    (f) LEVELING    3  
 JV0293  NGVD 29 (11/26/84)   17.772  (m)           58.31   (f) ADJUSTED    1 2
 JV0293
 JV0293.Superseded values are not recommended for survey control.
 JV0293
 JV0293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0293.See file dsdata.pdf to determine how the superseded data were derived.
 JV0293
 JV0293_MARKER: DB = BENCH MARK DISK
 JV0293_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0293_STAMPING: C 122 1971
 JV0293_MARK LOGO: CGS
 JV0293_PROJECTION: FLUSH
 JV0293_MAGNETIC: I = MARKER IS A STEEL ROD
 JV0293_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0293_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0293+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV0293_ROD/PIPE-DEPTH: 16.3 meters
 JV0293
 JV0293  HISTORY     - Date     Condition        Report By
 JV0293  HISTORY     - 1971     MONUMENTED       NGS
 JV0293  HISTORY     - 1971     GOOD             LOCSUR
 JV0293  HISTORY     - 19901128 GOOD             USPSQD
 JV0293  HISTORY     - 20000326 GOOD             USPSQD
 JV0293  HISTORY     - 20000410 GOOD             MDSHA
 JV0293  HISTORY     - 20020626 GOOD             MDSHA
 JV0293  HISTORY     - 20060318 GOOD             USPSQD
 JV0293  HISTORY     - 20150722 GOOD             USPSQD
 JV0293  HISTORY     - 20210304 GOOD             MDSHA
 JV0293  HISTORY     - 20250731 GOOD             PROFLN
 JV0293
 JV0293                          STATION DESCRIPTION
 JV0293
 JV0293'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0293'3 MI SW FROM CHURCH HILL.
 JV0293'ABOUT 2.95 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JV0293'JUNCTION OF STATE HIGHWAY 300 AT CHURCH HILL, NEAR THE SMALL
 JV0293'MOUNT VERNON METHODIST CHURCH, NEAR THE EAST CORNER OF THE
 JV0293'SHUBBERY AROUND THE CHURCH, 172 FEET SOUTHEAST OF THE CENTER
 JV0293'LINE OF THE HIGHWAY, 20.5 FEET SOUTHEAST OF THE EAST CORNER OF
 JV0293'THE CHURCH, 17 FEET SOUTHWEST OF THE CENTER LINE OF A DRIVEWAY
 JV0293'ALONG THE NORTHEAST SIDE OF THE CHURCH, ABOUT LEVEL WITH THE
 JV0293'HIGHWAY, AND IS A DISK ON THE TOP OF A COPPER COATED STEEL ROD
 JV0293'FLUSH WITH THE GROUND AND PROTECTED BY A 6 INCH IRON PIPE THAT
 JV0293'IS FLUSH WITH THE GROUND.  THE ROD WAS DRIVEN TO A DEPTH OF 53.5
 JV0293'FEET TO REFUSAL.
 JV0293
 JV0293                          STATION RECOVERY (1971)
 JV0293
 JV0293'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1971
 JV0293'RECOVERED IN GOOD CONDITION.
 JV0293
 JV0293                          STATION RECOVERY (1990)
 JV0293
 JV0293'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0293'RECOVERED IN GOOD CONDITION.
 JV0293
 JV0293                          STATION RECOVERY (2000)
 JV0293
 JV0293'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 JV0293'MOUNT VERNON METHODIST CHURCH IS ABOUT 200 FEET N OF WINDY ACRES FARM
 JV0293'LANE.  THE MARK MAY BE FOUND BETWEEN TWO LARGE, MATURE SHRUBS.
 JV0293
 JV0293                          STATION RECOVERY (2000)
 JV0293
 JV0293'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV0293'RECOVERED AS DESCRIBED.
 JV0293
 JV0293                          STATION RECOVERY (2002)
 JV0293
 JV0293'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 JV0293'RECOVERED AS DESCRIBED.
 JV0293
 JV0293                          STATION RECOVERY (2006)
 JV0293
 JV0293'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JV0293'RECOVERED IN GOOD CONDITION.
 JV0293
 JV0293                          STATION RECOVERY (2015)
 JV0293
 JV0293'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0293'RECOVERED AS DESCRIBED.
 JV0293
 JV0293                          STATION RECOVERY (2021)
 JV0293
 JV0293'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV0293'RECOVERED IN GOOD CONDITION.
 JV0293
 JV0293                          STATION RECOVERY (2025)
 JV0293
 JV0293'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0293'THE MARK IS NOW UNDER 6 INCH DIAMETER VALVE BOX.  THE MARK IS 20 FT
 JV0293'(6.1 M) SOUTHEAST OF THE SOUTHEAST LINE OF THE CHURCH EXTENDED AND 5.5
 JV0293'FT (1.7 M) NORTHEAST OF THE NORTHEAST LINE OF THE CHURCH EXTENDED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0661 ***********************************************************************
 JV0661  DESIGNATION -  C 123
 JV0661  PID         -  JV0661
 JV0661  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0661  COUNTRY     -  US
 JV0661  USGS QUAD   -  LAUREL (2016)
 JV0661
 JV0661                         *CURRENT SURVEY CONTROL
 JV0661  ______________________________________________________________________
 JV0661* NAD 83(1986) POSITION- 39 04 53.     (N) 076 51 50.     (W)   SCALED
 JV0661* NAVD 88 ORTHO HEIGHT -    70.029 (meters)      229.75  (feet) ADJUSTED
 JV0661  ______________________________________________________________________
 JV0661  GEOID HEIGHT    -        -32.226 (meters)                     GEOID18
 JV0661  DYNAMIC HEIGHT  -         69.991 (meters)      229.63  (feet) COMP
 JV0661  MODELED GRAVITY -    980,096.6   (mgal)                       NAVD 88
 JV0661  OBS GRAVITY     -    980,095.9   (mgal)                       GRAV_OBS
 JV0661
 JV0661  VERT ORDER      -  FIRST     CLASS I
 JV0661
 JV0661.The horizontal coordinates were scaled from a map and have
 JV0661.an estimated accuracy of +/- 6 seconds.
 JV0661
 JV0661.The orthometric height was determined by differential leveling and
 JV0661.adjusted by the NATIONAL GEODETIC SURVEY
 JV0661.in June 1991.
 JV0661
 JV0661.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0661.GEOID18 height accuracy estimate available here.
 JV0661
 JV0661.Click photographs - Photos may exist for this station.
 JV0661
 JV0661.The dynamic height is computed by dividing the NAVD 88
 JV0661.geopotential number by the normal gravity value computed on the
 JV0661.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0661.degrees latitude (g = 980.6199 gals.).
 JV0661
 JV0661.The modeled gravity was interpolated from observed gravity values.
 JV0661
 JV0661.The observed gravity was obtained from relative gravimeter ties
 JV0661.to the IGSN71 gravity network.
 JV0661
 JV0661;                    North         East    Units  Estimated Accuracy
 JV0661;SPC MD       -   157,050.      411,780.      MT  (+/- 180 meters Scaled)
 JV0661
 JV0661_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ387274(NAD 83)
 JV0661
 JV0661                          SUPERSEDED SURVEY CONTROL
 JV0661
 JV0661  NGVD 29 (11/26/84)   70.256  (m)          230.50   (f) ADJUSTED    1 1
 JV0661
 JV0661.Superseded values are not recommended for survey control.
 JV0661
 JV0661.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0661.See file dsdata.pdf to determine how the superseded data were derived.
 JV0661
 JV0661_MARKER: DB = BENCH MARK DISK
 JV0661_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0661_STAMPING: C 123 1971
 JV0661_MARK LOGO: CGS
 JV0661_PROJECTION: PROJECTING 3 CENTIMETERS
 JV0661_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0661
 JV0661  HISTORY     - Date     Condition        Report By
 JV0661  HISTORY     - 1971     MONUMENTED       NGS
 JV0661
 JV0661                          STATION DESCRIPTION
 JV0661
 JV0661'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0661'1.8 MI SW FROM LAUREL.
 JV0661'ABOUT 1.85 MILES SOUTHWEST ALONG U.S. HIGHWAY 1 FROM THE
 JV0661'INTERSECTION OF STATE HIGHWAY 216 (MAIN STREET) AT LAUREL,
 JV0661'ACROSS THE HIGHWAY FROM THE PRINCESS MOTEL, 36 FEET NORTHWEST
 JV0661'OF THE CENTER LINE OF THE HIGHWAY, 51 FEET NORTHEAST OF THE CENTER
 JV0661'LINE OF A PRIVATE ROAD WHICH LEADS TO A FARMHOUSE, 2 FEET SOUTHEAST
 JV0661'OF POWER POLE NUMBER 213901, 2.0 FEET WEST OF A METAL WITNESS
 JV0661'POST, ABOUT 4 FEET ABOVE THE LEVEL OF THE HIGHWAY, AND ON THE
 JV0661'TOP OF A COPPER COATED ROD WHICH PROJECTS 1 INCH AND IS PROTECTED
 JV0661'BY A METAL PIPE WHICH PROJECTS 2 INCHES.  THE ROD WAS DRIVEN TO
 JV0661'REFUSAL AT A DEPTH OF 34 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0276 ***********************************************************************
 HV0276  DESIGNATION -  C 124
 HV0276  PID         -  HV0276
 HV0276  STATE/COUNTY-  MD/DORCHESTER
 HV0276  COUNTRY     -  US
 HV0276  USGS QUAD   -  CHURCH CREEK (2016)
 HV0276
 HV0276                         *CURRENT SURVEY CONTROL
 HV0276  ______________________________________________________________________
 HV0276* NAD 83(1986) POSITION- 38 30 21.0    (N) 076 08 57.3    (W)   HD_HELD2
 HV0276* NAVD 88 ORTHO HEIGHT -     1.263 (meters)        4.14  (feet) ADJUSTED
 HV0276  ______________________________________________________________________
 HV0276  GEOID HEIGHT    -        -35.006 (meters)                     GEOID18
 HV0276  DYNAMIC HEIGHT  -          1.262 (meters)        4.14  (feet) COMP
 HV0276  MODELED GRAVITY -    980,013.3   (mgal)                       NAVD 88
 HV0276
 HV0276  VERT ORDER      -  FIRST     CLASS II
 HV0276
 HV0276.The horizontal coordinates were established by autonomous hand held GPS
 HV0276.observations and have an estimated accuracy of +/- 10 meters.
 HV0276
 HV0276.The orthometric height was determined by differential leveling and
 HV0276.adjusted by the NATIONAL GEODETIC SURVEY
 HV0276.in June 1991.
 HV0276
 HV0276.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0276.GEOID18 height accuracy estimate available here.
 HV0276
 HV0276.Click photographs - Photos may exist for this station.
 HV0276
 HV0276.The dynamic height is computed by dividing the NAVD 88
 HV0276.geopotential number by the normal gravity value computed on the
 HV0276.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0276.degrees latitude (g = 980.6199 gals.).
 HV0276
 HV0276.The modeled gravity was interpolated from observed gravity values.
 HV0276
 HV0276;                    North         East    Units  Estimated Accuracy
 HV0276;SPC MD       -    93,497.      474,204.      MT  (+/- 10 meters HH2 GPS)
 HV0276
 HV0276_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9979462566(NAD 83)
 HV0276
 HV0276                          SUPERSEDED SURVEY CONTROL
 HV0276
 HV0276  NGVD 29 (11/26/84)    1.498  (m)            4.91   (f) ADJUSTED    1 2
 HV0276
 HV0276.Superseded values are not recommended for survey control.
 HV0276
 HV0276.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0276.See file dsdata.pdf to determine how the superseded data were derived.
 HV0276
 HV0276_MARKER: DB = BENCH MARK DISK
 HV0276_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0276+WITH SETTING: INTO GROUND
 HV0276_STAMPING: C 124 1971
 HV0276_MARK LOGO: CGS
 HV0276_PROJECTION: FLUSH
 HV0276_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0276_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0276+SATELLITE: SATELLITE OBSERVATIONS - May 11, 2020
 HV0276
 HV0276  HISTORY     - Date     Condition        Report By
 HV0276  HISTORY     - 1971     MONUMENTED       NGS
 HV0276  HISTORY     - 19900808 GOOD             MDSHA
 HV0276  HISTORY     - 20060116 GOOD             USPSQD
 HV0276  HISTORY     - 20070130 GOOD             USPSQD
 HV0276  HISTORY     - 20200511 GOOD             MDSHA
 HV0276
 HV0276                          STATION DESCRIPTION
 HV0276
 HV0276'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0276'AT CHURCH CREEK.
 HV0276'AT CHURCH CREEK, ABOUT 0.35 MILE NORTHEAST ALONG STATE HIGHWAY
 HV0276'16 FROM THE POST OFFICE, AT THE SOUTH CORNER OF THE YARD FOR AN
 HV0276'ABANDONED SCHOOL, 29 FEET NORTHWEST OF THE CENTER LINE OF THE
 HV0276'HIGHWAY, 188.0 FEET SOUTH OF THE SOUTH CORNER OF THE MAIN
 HV0276'BUILDING OF THE ABANDONED SCHOOL, 42 1/2 FEET SOUTHWEST OF THE
 HV0276'CENTER LINE OF THE MORE SOUTHWESTERLY OF TWO DRIVEWAYS TO THE
 HV0276'SCHOOL, 2 1/2 FEET NORTHWEST OF TELEPHONE POLE NUMBER 215, 1.5
 HV0276'FEET SOUTHWEST OF A METAL WITNESS POST, ABOUT 1 FOOT ABOVE THE
 HV0276'LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-FOOT SECTION OF COPPER
 HV0276'COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS
 HV0276'1 INCH BELOW THE SURFACE OF THE GROUND AND IS PROTECTED BY A
 HV0276'4-INCH METAL PIPE THAT IS LEVEL WITH THE GROUND.
 HV0276
 HV0276                          STATION RECOVERY (1990)
 HV0276
 HV0276'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HV0276'0.53 KM (0.33 MI) NORTHEAST ALONG STATE HIGHWAY 16 FROM THE JUNCTION
 HV0276'OF STATE HIGHWAY 335 AT CHURCH CREEK, 29.5 FT (9.0 M) NORTHWEST OF
 HV0276'THE CENTERLINE OF STATE HIGHWAY 16, 2.9 FT (0.9 M) NORTHWEST OF POWER
 HV0276'POLE NUMBER 215, 29.2 FT (8.9 M) SOUTHWEST OF THE SOUTHWEST END OF A
 HV0276'PIPE CULVERT, AND 1.2 FT (0.4 M) SOUTHWEST OF A WITNESS POST.
 HV0276
 HV0276                          STATION RECOVERY (2006)
 HV0276
 HV0276'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV0276'WITNESS POST SAYS BM 50A. DISK IS ON THE SURFACE. THERE IS A TELEPHONE
 HV0276'COMPANY TUBE, 12 INCHES IN DIAMETER AND 3 FEET TALL WITHIN A FOOT.
 HV0276'THERE IS NO LONGER A SCHOOL ON THIS SITE. IT IS NOW CHURCH CREEK PARK.
 HV0276
 HV0276                          STATION RECOVERY (2007)
 HV0276
 HV0276'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HV0276'RECOVERED IN GOOD CONDITION.
 HV0276
 HV0276                          STATION RECOVERY (2020)
 HV0276
 HV0276'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (MRA)
 HV0276'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0694 ***********************************************************************
 JV0694  DESIGNATION -  C 125
 JV0694  PID         -  JV0694
 JV0694  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0694  COUNTRY     -  US
 JV0694  USGS QUAD   -  ROUND BAY (2016)
 JV0694
 JV0694                         *CURRENT SURVEY CONTROL
 JV0694  ______________________________________________________________________
 JV0694* NAD 83(1986) POSITION- 39 03 40.6    (N) 076 31 53.3    (W)   HD_HELD2
 JV0694* NAVD 88 ORTHO HEIGHT -     4.516 (meters)       14.82  (feet) ADJUSTED
 JV0694  ______________________________________________________________________
 JV0694  GEOID HEIGHT    -        -33.140 (meters)                     GEOID18
 JV0694  DYNAMIC HEIGHT  -          4.513 (meters)       14.81  (feet) COMP
 JV0694  MODELED GRAVITY -    980,079.3   (mgal)                       NAVD 88
 JV0694
 JV0694  VERT ORDER      -  FIRST     CLASS II
 JV0694
 JV0694.The horizontal coordinates were established by autonomous hand held GPS
 JV0694.observations and have an estimated accuracy of +/- 10 meters.
 JV0694
 JV0694.The orthometric height was determined by differential leveling and
 JV0694.adjusted by the NATIONAL GEODETIC SURVEY
 JV0694.in June 1991.
 JV0694
 JV0694.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0694.GEOID18 height accuracy estimate available here.
 JV0694
 JV0694.Click photographs - Photos may exist for this station.
 JV0694
 JV0694.The dynamic height is computed by dividing the NAVD 88
 JV0694.geopotential number by the normal gravity value computed on the
 JV0694.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0694.degrees latitude (g = 980.6199 gals.).
 JV0694
 JV0694.The modeled gravity was interpolated from observed gravity values.
 JV0694
 JV0694;                    North         East    Units  Estimated Accuracy
 JV0694;SPC MD       -   154,913.      440,550.      MT  (+/- 10 meters HH2 GPS)
 JV0694
 JV0694_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6749824692(NAD 83)
 JV0694
 JV0694                          SUPERSEDED SURVEY CONTROL
 JV0694
 JV0694  NGVD 29 (11/26/84)    4.760  (m)           15.62   (f) ADJUSTED    1 2
 JV0694
 JV0694.Superseded values are not recommended for survey control.
 JV0694
 JV0694.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0694.See file dsdata.pdf to determine how the superseded data were derived.
 JV0694
 JV0694_MARKER: DB = BENCH MARK DISK
 JV0694_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0694+WITH SETTING: INTO GROUND
 JV0694_STAMPING: C 125 1971
 JV0694_MARK LOGO: CGS
 JV0694_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0694+STABILITY: SURFACE MOTION
 JV0694
 JV0694  HISTORY     - Date     Condition        Report By
 JV0694  HISTORY     - 1971     MONUMENTED       NGS
 JV0694  HISTORY     - 20000217 POOR             USPSQD
 JV0694
 JV0694                          STATION DESCRIPTION
 JV0694
 JV0694'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0694'5.6 MI NW FROM ANNAPOLIS.
 JV0694'ABOUT 1.6 MILES NORTHWEST ALONG STATE HIGHWAY 450 FROM THE
 JV0694'NORTHEAST END OF THE HIGHWAY BRIDGE OVER THE SEVERN RIVER AT
 JV0694'ANNAPOLIS, THENCE 4.0 MILES NORTHWEST ALONG STATE HIGHWAY 2,
 JV0694'ABOUT 0.3 MILE NORTHWEST OF THE JUNCTION OF OLD JONES STATION
 JV0694'ROAD, ALONG THE NORTHEAST METAL FENCE AROUND THE SMITH MARINA,
 JV0694'43 FEET SOUTHWEST OF THE CENTER LINE OF THE SOUTHWEST LANES OF
 JV0694'THE HIGHWAY, 15 FEET SOUTHWEST OF THE SOUTHWEST CURB ALONG
 JV0694'THE SOUTHWEST LANES OF THE HIGHWAY, 33 FEET NORTHWEST OF THE
 JV0694'CENTER LINE OF THE DRIVEWAY TO THE MARINA, 62 1/2 FEET NORTHEAST
 JV0694'OF THE EAST CORNER OF A BRICK BUILDING, 3 1/2 FEET NORTHWEST OF
 JV0694'POWER POLE NUMBER 263894, 1 1/2 FEET NORTHEAST OF THE FENCE,
 JV0694'2 1/2 FEET SOUTHEAST OF A METAL WITNESS POST, ABOUT 1 1/2
 JV0694'FEET ABOVE THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-FOOT
 JV0694'SECTION OF COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE
 JV0694'PLATE.  THE DISK PROJECTS 1 INCH AND IS PROTECTED BY A 4-INCH
 JV0694'METAL PIPE THAT PROJECTS 2 INCHES.
 JV0694
 JV0694                          STATION RECOVERY (2000)
 JV0694
 JV0694'RECOVERY NOTE BY US POWER SQUADRON 2000
 JV0694'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0170 ***********************************************************************
 HV0170  DESIGNATION -  C 126
 HV0170  PID         -  HV0170
 HV0170  STATE/COUNTY-  MD/QUEEN ANNES
 HV0170  COUNTRY     -  US
 HV0170  USGS QUAD   -  KENT ISLAND (2016)
 HV0170
 HV0170                         *CURRENT SURVEY CONTROL
 HV0170  ______________________________________________________________________
 HV0170* NAD 83(1986) POSITION- 38 58 31.     (N) 076 19 25.     (W)   SCALED
 HV0170* NAVD 88 ORTHO HEIGHT -     4.415 (meters)       14.48  (feet) ADJUSTED
 HV0170  ______________________________________________________________________
 HV0170  GEOID HEIGHT    -        -33.588 (meters)                     GEOID18
 HV0170  DYNAMIC HEIGHT  -          4.412 (meters)       14.48  (feet) COMP
 HV0170  MODELED GRAVITY -    980,080.8   (mgal)                       NAVD 88
 HV0170
 HV0170  VERT ORDER      -  FIRST     CLASS II
 HV0170
 HV0170.This mark is at Bay Bridge Airport (W29)
 HV0170
 HV0170.The horizontal coordinates were scaled from a map and have
 HV0170.an estimated accuracy of +/- 6 seconds.
 HV0170
 HV0170.The orthometric height was determined by differential leveling and
 HV0170.adjusted by the NATIONAL GEODETIC SURVEY
 HV0170.in June 1991.
 HV0170
 HV0170.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0170.GEOID18 height accuracy estimate available here.
 HV0170
 HV0170.Click photographs - Photos may exist for this station.
 HV0170
 HV0170.The dynamic height is computed by dividing the NAVD 88
 HV0170.geopotential number by the normal gravity value computed on the
 HV0170.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0170.degrees latitude (g = 980.6199 gals.).
 HV0170
 HV0170.The modeled gravity was interpolated from observed gravity values.
 HV0170
 HV0170;                    North         East    Units  Estimated Accuracy
 HV0170;SPC MD       -   145,480.      458,610.      MT  (+/- 180 meters Scaled)
 HV0170
 HV0170_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ853148(NAD 83)
 HV0170
 HV0170                          SUPERSEDED SURVEY CONTROL
 HV0170
 HV0170  NGVD 29 (11/26/84)    4.651  (m)           15.26   (f) ADJUSTED    1 2
 HV0170
 HV0170.Superseded values are not recommended for survey control.
 HV0170
 HV0170.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0170.See file dsdata.pdf to determine how the superseded data were derived.
 HV0170
 HV0170_MARKER: DB = BENCH MARK DISK
 HV0170_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0170+WITH SETTING: INTO GROUND
 HV0170_STAMPING: C 126 1971
 HV0170_MARK LOGO: CGS
 HV0170_PROJECTION: FLUSH
 HV0170_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0170+STABILITY: SURFACE MOTION
 HV0170
 HV0170  HISTORY     - Date     Condition        Report By
 HV0170  HISTORY     - 1971     MONUMENTED       NGS
 HV0170  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 HV0170  HISTORY     - 20060412 MARK NOT FOUND   USPSQD
 HV0170
 HV0170                          STATION DESCRIPTION
 HV0170
 HV0170'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0170'0.4 MI SW FROM STEVENSVILLE.
 HV0170'ABOUT 0.45 MILE SOUTHWEST ALONG STATE HIGHWAY 8 FROM THE
 HV0170'INTERSECTION OF U.S. HIGHWAYS 50 AND 301 AT STEVENSVILLE, AT THE
 HV0170'BAY BRIDGE AIRPORT, 22.0 FEET NORTHWEST OF THE NORTHWEST CORNER
 HV0170'OF A CONCRETE BLOCK OFICE BUILDING, 226.0 FEET NORTH-NORTHWEST
 HV0170'OF BENCH MARK B 126, ABOUT LEVEL WITH THE GROUND, AND ON THE
 HV0170'TOP OF A 4-FOOT SECTION OF COPPER COATED ROD THAT IS ATTACHED
 HV0170'TO A METAL BASE PLATE.  THE DISK IS LEVEL WITH THE SURFACE
 HV0170'OF THE GROUND AND IS PROTECTED BY A 4-INCH METAL PIPE THAT IS
 HV0170'LEVEL WITH THE GROUND.
 HV0170
 HV0170                          STATION RECOVERY (1983)
 HV0170
 HV0170'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0170'MARK NOT FOUND.
 HV0170
 HV0170                          STATION RECOVERY (2006)
 HV0170
 HV0170'RECOVERY NOTE BY US POWER SQUADRON 2006 (KRT)
 HV0170'AREA IS NOW A PAVED AIRCRAFT PARKING RAMP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0108 ***********************************************************************
 HV0108  DESIGNATION -  C 127
 HV0108  PID         -  HV0108
 HV0108  STATE/COUNTY-  MD/TALBOT
 HV0108  COUNTRY     -  US
 HV0108  USGS QUAD   -  EASTON (2016)
 HV0108
 HV0108                         *CURRENT SURVEY CONTROL
 HV0108  ______________________________________________________________________
 HV0108* NAD 83(1986) POSITION- 38 48 45.     (N) 076 03 39.     (W)   SCALED
 HV0108* NAVD 88 ORTHO HEIGHT -    21.004 (meters)       68.91  (feet) ADJUSTED
 HV0108  ______________________________________________________________________
 HV0108  GEOID HEIGHT    -        -34.613 (meters)                     GEOID18
 HV0108  DYNAMIC HEIGHT  -         20.991 (meters)       68.87  (feet) COMP
 HV0108  MODELED GRAVITY -    980,040.3   (mgal)                       NAVD 88
 HV0108
 HV0108  VERT ORDER      -  FIRST     CLASS II
 HV0108
 HV0108.The horizontal coordinates were scaled from a map and have
 HV0108.an estimated accuracy of +/- 6 seconds.
 HV0108
 HV0108.The orthometric height was determined by differential leveling and
 HV0108.adjusted by the NATIONAL GEODETIC SURVEY
 HV0108.in June 1991.
 HV0108
 HV0108.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0108.GEOID18 height accuracy estimate available here.
 HV0108
 HV0108.Click photographs - Photos may exist for this station.
 HV0108
 HV0108.The dynamic height is computed by dividing the NAVD 88
 HV0108.geopotential number by the normal gravity value computed on the
 HV0108.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0108.degrees latitude (g = 980.6199 gals.).
 HV0108
 HV0108.The modeled gravity was interpolated from observed gravity values.
 HV0108
 HV0108;                    North         East    Units  Estimated Accuracy
 HV0108;SPC MD       -   127,610.      481,570.      MT  (+/- 180 meters Scaled)
 HV0108
 HV0108_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH078965(NAD 83)
 HV0108
 HV0108                          SUPERSEDED SURVEY CONTROL
 HV0108
 HV0108  NGVD 29 (11/26/84)   21.238  (m)           69.68   (f) ADJUSTED    1 2
 HV0108
 HV0108.Superseded values are not recommended for survey control.
 HV0108
 HV0108.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0108.See file dsdata.pdf to determine how the superseded data were derived.
 HV0108
 HV0108_MARKER: DB = BENCH MARK DISK
 HV0108_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0108+WITH SETTING: INTO GROUND
 HV0108_STAMPING: C 127 1971
 HV0108_MARK LOGO: CGS
 HV0108_PROJECTION: RECESSED 3 CENTIMETERS
 HV0108_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0108+STABILITY: SURFACE MOTION
 HV0108
 HV0108  HISTORY     - Date     Condition        Report By
 HV0108  HISTORY     - 1971     MONUMENTED       NGS
 HV0108  HISTORY     - 20020222 MARK NOT FOUND   USPSQD
 HV0108
 HV0108                          STATION DESCRIPTION
 HV0108
 HV0108'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0108'2.8 MI N FROM EASTON.
 HV0108'ABOUT 2.8 MILES NORTH ALONG U.S. HIGHWAY 50 FROM THE INTERSECTION
 HV0108'OF STATE HIGHWAY 331 AT EASTON, AT THE JUNCTION OF A BLACK TOP
 HV0108'ROAD LEADING WEST TO THE EASTON AIRPORT, NEAR THE NORTHEAST CORNER
 HV0108'OF THE EASTON AIRPORT, 49.6 FEET WEST OF THE CENTER LINE OF THE
 HV0108'NEAR LANE OF THE HIGHWAY, 34 1/2 FEET SOUTH OF THE CENTER LINE
 HV0108'OF THE BLACK TOP ROAD, 5.7 FEET SOUTHEAST OF THE CENTER OF A STEEL
 HV0108'PIPE SUPPORTING AN EASTON AIRPORT SIGN, 1.4 FEET EAST OF THE
 HV0108'SOUTHEAST CORNER OF A 4-BY-3-FOOT CONCRETE BASE, 2 FEET BELOW THE
 HV0108'LEVEL OF THE HIGHWAY, ON THE TOP OF A 4 FOOT COPPER COATED STEEL
 HV0108'ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS 1 INCH
 HV0108'BELOW THE LEVEL OF THE GROUND AND ENCASED IN A 4 INCH PIPE THAT
 HV0108'IS FLUSH WITH THE GROUND.
 HV0108
 HV0108                          STATION RECOVERY (2002)
 HV0108
 HV0108'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0108'SEE HV 7943 C 126 RESET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7943 ***********************************************************************
 HV7943  DESIGNATION -  C 127 RESET
 HV7943  PID         -  HV7943
 HV7943  STATE/COUNTY-  MD/TALBOT
 HV7943  COUNTRY     -  US
 HV7943  USGS QUAD   -  EASTON (2016)
 HV7943
 HV7943                         *CURRENT SURVEY CONTROL
 HV7943  ______________________________________________________________________
 HV7943* NAD 83(1986) POSITION- 38 48 45.     (N) 076 03 39.     (W)   SCALED
 HV7943* NAVD 88 ORTHO HEIGHT -    20.60  (meters)       67.6   (feet) RESET
 HV7943  ______________________________________________________________________
 HV7943  GEOID HEIGHT    -        -34.613 (meters)                     GEOID18
 HV7943  DYNAMIC HEIGHT  -         20.59  (meters)       67.6   (feet) COMP
 HV7943  MODELED GRAVITY -    980,040.3   (mgal)                       NAVD 88
 HV7943
 HV7943  VERT ORDER      -  THIRD
 HV7943
 HV7943.The horizontal coordinates were scaled from a map and have
 HV7943.an estimated accuracy of +/- 6 seconds.
 HV7943
 HV7943.The orthometric height was computed from unverified reset data.
 HV7943
 HV7943.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7943.GEOID18 height accuracy estimate available here.
 HV7943
 HV7943.Click photographs - Photos may exist for this station.
 HV7943
 HV7943.The dynamic height is computed by dividing the NAVD 88
 HV7943.geopotential number by the normal gravity value computed on the
 HV7943.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7943.degrees latitude (g = 980.6199 gals.).
 HV7943
 HV7943.The modeled gravity was interpolated from observed gravity values.
 HV7943
 HV7943;                    North         East    Units  Estimated Accuracy
 HV7943;SPC MD       -   127,610.      481,570.      MT  (+/- 180 meters Scaled)
 HV7943
 HV7943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH078965(NAD 83)
 HV7943
 HV7943                          SUPERSEDED SURVEY CONTROL
 HV7943
 HV7943  NGVD 29 (??/??/??)   20.84   (m)           68.4    (f) RESET       3  
 HV7943
 HV7943.Superseded values are not recommended for survey control.
 HV7943
 HV7943.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7943.See file dsdata.pdf to determine how the superseded data were derived.
 HV7943
 HV7943_MARKER: DV = VERTICAL CONTROL DISK
 HV7943_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7943_STAMPING: C 127 RESET 1977
 HV7943_MARK LOGO: NGS
 HV7943_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7943+STABILITY: SURFACE MOTION
 HV7943_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7943+SATELLITE: SATELLITE OBSERVATIONS - June 07, 1990
 HV7943
 HV7943  HISTORY     - Date     Condition        Report By
 HV7943  HISTORY     - 1977     MONUMENTED       NGS
 HV7943  HISTORY     - 19900607 GOOD             NGS
 HV7943  HISTORY     - 20020222 MARK NOT FOUND   USPSQD
 HV7943
 HV7943                          STATION DESCRIPTION
 HV7943
 HV7943'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 HV7943'2.8 MI N FROM EASTON.
 HV7943'ABOUT 2.8 MILES NORTH ALONG U.S. HIGHWAY 50 FROM THE INTERSECTION
 HV7943'OF STATE HIGHWAY 331 AT EASTON, AT THE JUNCTION OF A BLACK TOP
 HV7943'ROAD LEADING WEST TO THE EASTON AIRPORT, NEAR THE NORTHEAST CORNER
 HV7943'OF THE EASTON AIRPORT, 40.5 FEET WEST OF THE CENTER LINE OF THE
 HV7943'SOUTHBOUND LANE OF US HIGHWAY 50, 164.0 FEET SOUTH OF THE
 HV7943'CENTERLINE OF THE BLACKTOP ROAD, 26.2 FEET SSE OF A BELL SYSTEM
 HV7943'MANHOLE, AND 3.5 FEET BELOW THE LEVEL OF THE HIGHWAY, 2.5 FEET
 HV7943'WEST OF A WITNESS POST.
 HV7943
 HV7943                          STATION RECOVERY (1990)
 HV7943
 HV7943'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV7943'RECOVERED IN GOOD CONDITION.
 HV7943
 HV7943                          STATION RECOVERY (2002)
 HV7943
 HV7943'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV7943'SEE HV 0108 C127. EXTENSIVE ROAD REALIGNMENT AND CONSTRUCTION IN THE
 HV7943'VICINITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0524 ***********************************************************************
 HV0524  DESIGNATION -  C 128
 HV0524  PID         -  HV0524
 HV0524  STATE/COUNTY-  MD/ST MARYS
 HV0524  COUNTRY     -  US
 HV0524  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0524
 HV0524                         *CURRENT SURVEY CONTROL
 HV0524  ______________________________________________________________________
 HV0524* NAD 83(1986) POSITION- 38 24 18.     (N) 076 49 17.     (W)   SCALED
 HV0524* NAVD 88 ORTHO HEIGHT -    45.621 (meters)      149.67  (feet) ADJUSTED
 HV0524  ______________________________________________________________________
 HV0524  GEOID HEIGHT    -        -33.612 (meters)                     GEOID18
 HV0524  DYNAMIC HEIGHT  -         45.593 (meters)      149.58  (feet) COMP
 HV0524  MODELED GRAVITY -    980,007.1   (mgal)                       NAVD 88
 HV0524
 HV0524  VERT ORDER      -  FIRST     CLASS II
 HV0524
 HV0524.The horizontal coordinates were scaled from a map and have
 HV0524.an estimated accuracy of +/- 6 seconds.
 HV0524
 HV0524.The orthometric height was determined by differential leveling and
 HV0524.adjusted by the NATIONAL GEODETIC SURVEY
 HV0524.in June 1991.
 HV0524
 HV0524.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0524.GEOID18 height accuracy estimate available here.
 HV0524
 HV0524.Click photographs - Photos may exist for this station.
 HV0524
 HV0524.The dynamic height is computed by dividing the NAVD 88
 HV0524.geopotential number by the normal gravity value computed on the
 HV0524.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0524.degrees latitude (g = 980.6199 gals.).
 HV0524
 HV0524.The modeled gravity was interpolated from observed gravity values.
 HV0524
 HV0524;                    North         East    Units  Estimated Accuracy
 HV0524;SPC MD       -    81,970.      415,600.      MT  (+/- 180 meters Scaled)
 HV0524
 HV0524_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH409523(NAD 83)
 HV0524
 HV0524                          SUPERSEDED SURVEY CONTROL
 HV0524
 HV0524  NGVD 29 (11/26/84)   45.858  (m)          150.45   (f) ADJUSTED    1 2
 HV0524
 HV0524.Superseded values are not recommended for survey control.
 HV0524
 HV0524.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0524.See file dsdata.pdf to determine how the superseded data were derived.
 HV0524
 HV0524_MARKER: DB = BENCH MARK DISK
 HV0524_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0524_STAMPING: C 128 1971
 HV0524_MARK LOGO: CGS
 HV0524_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0524
 HV0524  HISTORY     - Date     Condition        Report By
 HV0524  HISTORY     - 1971     MONUMENTED       NGS
 HV0524
 HV0524                          STATION DESCRIPTION
 HV0524
 HV0524'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0524'4.8 MI NW FROM CHAPTICO.
 HV0524'ABOUT 4.1 MILES NORTHWEST ALONG STATE HIGHWAY 234 FROM THE POST
 HV0524'OFFICE AT CHAPTICO, THENCE 0.6 MILE NORTHEAST ALONG STATE
 HV0524'HIGHWAY 236, THENCE 0.05 MILE EASTERLY ALONG A SAND ROAD, AT THE
 HV0524'SITE OF AN OLD CEMETERY, NEAR THE SOUTHEAST CORNER OF THE
 HV0524'CEMETERY, MIDWAY BETWEEN TWO LARGE OAK TREES WITH BLAZE, 68
 HV0524'YARDS SOUTHWEST OF THE CENTER LINE OF THE SAND ROAD, 7 1/2 FEET
 HV0524'WEST OF THE EAST ONE OF THE TWO OAK TREES, 8 FEET EAST OF THE
 HV0524'WEST TREE, 82 FEET SOUTHWEST OF THE E.C. BURROUGHS HEADSTONE,
 HV0524'27 FEET NORTHWEST OF THE CECIL P. MORAN HEADSTONE, 195 FEET
 HV0524'SOUTHEAST OF POWER LINE POLE NO. 2, 1 FOOT SOUTHWEST OF A METAL
 HV0524'WITNESS POST, ABOUT LEVEL WITH THE ROAD AND IS A DISK ON THE TOP
 HV0524'OF A COPPER COATED STEEL ROD FLUSH WITH THE GROUND AND ENCASED
 HV0524'IN A 4 INCH METAL PIPE FLUSH WITH THE GROUND.  THE ROD WAS
 HV0524'DRIVEN TO REFUSAL AT A DEPTH OF 10 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0609 ***********************************************************************
 HV0609  DESIGNATION -  C 129
 HV0609  PID         -  HV0609
 HV0609  STATE/COUNTY-  MD/CHARLES
 HV0609  COUNTRY     -  US
 HV0609  USGS QUAD   -  POPES CREEK (2016)
 HV0609
 HV0609                         *CURRENT SURVEY CONTROL
 HV0609  ______________________________________________________________________
 HV0609* NAD 83(1986) POSITION- 38 25 54.     (N) 076 58 22.     (W)   SCALED
 HV0609* NAVD 88 ORTHO HEIGHT -    29.929 (meters)       98.19  (feet) ADJUSTED
 HV0609  ______________________________________________________________________
 HV0609  GEOID HEIGHT    -        -33.305 (meters)                     GEOID18
 HV0609  DYNAMIC HEIGHT  -         29.910 (meters)       98.13  (feet) COMP
 HV0609  MODELED GRAVITY -    980,009.4   (mgal)                       NAVD 88
 HV0609
 HV0609  VERT ORDER      -  FIRST     CLASS II
 HV0609
 HV0609.The horizontal coordinates were scaled from a map and have
 HV0609.an estimated accuracy of +/- 6 seconds.
 HV0609
 HV0609.The orthometric height was determined by differential leveling and
 HV0609.adjusted by the NATIONAL GEODETIC SURVEY
 HV0609.in June 1991.
 HV0609
 HV0609.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0609.GEOID18 height accuracy estimate available here.
 HV0609
 HV0609.Click photographs - Photos may exist for this station.
 HV0609
 HV0609.The dynamic height is computed by dividing the NAVD 88
 HV0609.geopotential number by the normal gravity value computed on the
 HV0609.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0609.degrees latitude (g = 980.6199 gals.).
 HV0609
 HV0609.The modeled gravity was interpolated from observed gravity values.
 HV0609
 HV0609;                    North         East    Units  Estimated Accuracy
 HV0609;SPC MD       -    84,920.      402,380.      MT  (+/- 180 meters Scaled)
 HV0609
 HV0609_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH278555(NAD 83)
 HV0609
 HV0609                          SUPERSEDED SURVEY CONTROL
 HV0609
 HV0609  NGVD 29 (11/26/84)   30.171  (m)           98.99   (f) ADJUSTED    1 2
 HV0609
 HV0609.Superseded values are not recommended for survey control.
 HV0609
 HV0609.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0609.See file dsdata.pdf to determine how the superseded data were derived.
 HV0609
 HV0609_MARKER: DB = BENCH MARK DISK
 HV0609_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0609_SP_SET: CULVERT
 HV0609_STAMPING: C 129 1971
 HV0609_MARK LOGO: CGS
 HV0609_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0609+STABILITY: SURFACE MOTION
 HV0609
 HV0609  HISTORY     - Date     Condition        Report By
 HV0609  HISTORY     - 1971     MONUMENTED       NGS
 HV0609
 HV0609                          STATION DESCRIPTION
 HV0609
 HV0609'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0609'0.7 MI S FROM FAULKNER.
 HV0609'ABOUT 0.7 MILE SOUTH ALONG U.S. HIGHWAY 301 FROM THE
 HV0609'INTERSECTION OF STATE HIGHWAY 429 AT FAULKNER, AT THE SOUTHWEST
 HV0609'END OF A BOX CULVERT, ON THE TOP OF THE SOUTH WING WALL, 67 FEET
 HV0609'SOUTHWEST OF THE CENTER LINE OF THE SOUTHBOUND LANE OF THE
 HV0609'HIGHWAY AND ABOUT 10 FEET BELOW THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2149 ***********************************************************************
 JV2149  DESIGNATION -  C 13
 JV2149  PID         -  JV2149
 JV2149  STATE/COUNTY-  MD/FREDERICK
 JV2149  COUNTRY     -  US
 JV2149  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2149
 JV2149                         *CURRENT SURVEY CONTROL
 JV2149  ______________________________________________________________________
 JV2149* NAD 83(1986) POSITION- 39 22 15.51   (N) 077 23 31.44   (W)   HD_HELD1
 JV2149* NAVD 88 ORTHO HEIGHT -    81.561 (meters)      267.59  (feet) ADJUSTED
 JV2149  ______________________________________________________________________
 JV2149  GEOID HEIGHT    -        -32.584 (meters)                     GEOID18
 JV2149  DYNAMIC HEIGHT  -         81.516 (meters)      267.44  (feet) COMP
 JV2149  MODELED GRAVITY -    980,087.3   (mgal)                       NAVD 88
 JV2149
 JV2149  VERT ORDER      -  FIRST     CLASS II
 JV2149
 JV2149.The horizontal coordinates were determined by differentially corrected
 JV2149.hand held GPS observations or other comparable positioning techniques
 JV2149.and have an estimated accuracy of +/- 3 meters.
 JV2149
 JV2149.The orthometric height was determined by differential leveling and
 JV2149.adjusted by the NATIONAL GEODETIC SURVEY
 JV2149.in June 1991.
 JV2149
 JV2149.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2149.GEOID18 height accuracy estimate available here.
 JV2149
 JV2149.Click photographs - Photos may exist for this station.
 JV2149
 JV2149.The dynamic height is computed by dividing the NAVD 88
 JV2149.geopotential number by the normal gravity value computed on the
 JV2149.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2149.degrees latitude (g = 980.6199 gals.).
 JV2149
 JV2149.The modeled gravity was interpolated from observed gravity values.
 JV2149
 JV2149;                    North         East    Units  Estimated Accuracy
 JV2149;SPC MD       -   189,262.6     366,215.3     MT  (+/- 3 meters HH1 GPS) 
 JV2149
 JV2149_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9394060674(NAD 83)
 JV2149
 JV2149                          SUPERSEDED SURVEY CONTROL
 JV2149
 JV2149  NGVD 29 (11/26/84)   81.781  (m)          268.31   (f) ADJUSTED    1 2
 JV2149
 JV2149.Superseded values are not recommended for survey control.
 JV2149
 JV2149.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2149.See file dsdata.pdf to determine how the superseded data were derived.
 JV2149
 JV2149_MARKER: DB = BENCH MARK DISK
 JV2149_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2149_SP_SET: PIER
 JV2149_STAMPING: C 13 1935
 JV2149_MARK LOGO: CGS
 JV2149_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2149_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2149+SATELLITE: SATELLITE OBSERVATIONS - June 20, 2010
 JV2149
 JV2149  HISTORY     - Date     Condition        Report By
 JV2149  HISTORY     - 1935     MONUMENTED       CGS
 JV2149  HISTORY     - 1978     GOOD             NGS
 JV2149  HISTORY     - 20040904 GOOD             GEOCAC
 JV2149  HISTORY     - 20100620 GOOD             GEOCAC
 JV2149
 JV2149                          STATION DESCRIPTION
 JV2149
 JV2149'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2149'AT FREDERICK JUNCTION.
 JV2149'AT FREDERICK JUNCTION, FREDERICK COUNTY, ABOUT 620 FEET WEST OF
 JV2149'THE BALTIMORE AND OHIO RAILROAD STATION, AT THE OVERHEAD CROSSING
 JV2149'OF U.S. HIGHWAY 240, IN THE WEST FACE OF THE CENTER PIER, 7.6
 JV2149'FEET SOUTH OF THE SOUTH RAIL OF THE SOUTH TRACK, AND ABOUT 1.7
 JV2149'FEET HIGHER THAN THE TOP OF THE RAIL.  A STANDARD DISK, STAMPED
 JV2149'C 13 1935 AND SET VERTICALLY.
 JV2149
 JV2149                          STATION RECOVERY (1978)
 JV2149
 JV2149'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
 JV2149'RECOVERED IN GOOD CONDITION.
 JV2149
 JV2149                          STATION RECOVERY (2004)
 JV2149
 JV2149'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV2149'DISK IS INTACT, BUT SURFACE IS HEAVILY SCARRED.
 JV2149
 JV2149                          STATION RECOVERY (2010)
 JV2149
 JV2149'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2149'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0877 ***********************************************************************
 HV0877  DESIGNATION -  C 131
 HV0877  PID         -  HV0877
 HV0877  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0877  COUNTRY     -  US
 HV0877  USGS QUAD   -  ANACOSTIA (2016)
 HV0877
 HV0877                         *CURRENT SURVEY CONTROL
 HV0877  ______________________________________________________________________
 HV0877* NAD 83(1986) POSITION- 38 51 46.     (N) 076 56 43.     (W)   SCALED
 HV0877* NAVD 88 ORTHO HEIGHT -    59.637 (meters)      195.66  (feet) ADJUSTED
 HV0877  ______________________________________________________________________
 HV0877  GEOID HEIGHT    -        -32.286 (meters)                     GEOID18
 HV0877  DYNAMIC HEIGHT  -         59.604 (meters)      195.55  (feet) COMP
 HV0877  MODELED GRAVITY -    980,080.8   (mgal)                       NAVD 88
 HV0877
 HV0877  VERT ORDER      -  FIRST     CLASS I
 HV0877
 HV0877.The horizontal coordinates were scaled from a map and have
 HV0877.an estimated accuracy of +/- 6 seconds.
 HV0877
 HV0877.The orthometric height was determined by differential leveling and
 HV0877.adjusted by the NATIONAL GEODETIC SURVEY
 HV0877.in June 1991.
 HV0877
 HV0877.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0877.GEOID18 height accuracy estimate available here.
 HV0877
 HV0877.Click photographs - Photos may exist for this station.
 HV0877
 HV0877.The dynamic height is computed by dividing the NAVD 88
 HV0877.geopotential number by the normal gravity value computed on the
 HV0877.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0877.degrees latitude (g = 980.6199 gals.).
 HV0877
 HV0877.The modeled gravity was interpolated from observed gravity values.
 HV0877
 HV0877;                    North         East    Units  Estimated Accuracy
 HV0877;SPC MD       -   132,780.      404,750.      MT  (+/- 180 meters Scaled)
 HV0877
 HV0877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ312033(NAD 83)
 HV0877
 HV0877                          SUPERSEDED SURVEY CONTROL
 HV0877
 HV0877  NGVD 29 (11/26/84)   59.874  (m)          196.44   (f) ADJUSTED    1 1
 HV0877
 HV0877.Superseded values are not recommended for survey control.
 HV0877
 HV0877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0877.See file dsdata.pdf to determine how the superseded data were derived.
 HV0877
 HV0877_STAMPING: C 131 1971
 HV0877_MARK LOGO: CGS
 HV0877_PROJECTION: FLUSH
 HV0877
 HV0877  HISTORY     - Date     Condition        Report By
 HV0877  HISTORY     - 1971     MONUMENTED       NGS
 HV0877  HISTORY     - 1975     GOOD             NGS
 HV0877  HISTORY     - 20191028 MARK NOT FOUND   ARCSHE
 HV0877
 HV0877                          STATION DESCRIPTION
 HV0877
 HV0877'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0877'4.6 MI NW FROM FORESTVILLE.
 HV0877'ABOUT 4.55 MILES NORTHWEST ALONG STATE HIGHWAY 4 (PENNSYLVANIA
 HV0877'AVENUE) FROM THE INTERSECTION OF FORESTVILLE ROAD AT FORESTVILLE,
 HV0877'OR ABOUT 1.95 MILES SOUTHEAST ALONG PENNSYLVANIA AVENUE FROM
 HV0877'THE SOUTHEAST END OF THE JOHN PHILIP SOUSA BRIDGE OVER THE
 HV0877'ANACOSTIA RIVER AT WASHINGTON, D.C., ABOUT 0.1 MILE SOUTHEAST OF
 HV0877'THE D.C. - MARYLAND BOUNDARY LINE, AT THE EXIT GATE FOR CEDAR
 HV0877'HILL CEMETERY, 132 FEET SOUTH OF THE CENTER LINE OF THE
 HV0877'SOUTH LANES OF THE HIGHWAY, 16.7 FEET SOUTHWEST OF THE SOUTHWEST
 HV0877'CORNER OF THE STONE PILLAR AT THE WEST END OF A METAL FENCE,
 HV0877'12.8 FEET EAST OF THE EAST CURB OF THE EXIT DRIVE FOR THE
 HV0877'CEMETERY, 12 FEET NORTH-NORTHEAST OF THE NORTHEAST CORNER OF THE
 HV0877'STONE PILLAR AT THE EXIT GATE, 1.3 FEET NORTH OF THE NORTH SIDE
 HV0877'OF A 3 1/2-FOOT HIGH STONE WALL, ABOUT 2 FEET BELOW THE LEVEL
 HV0877'OF THE HIGHWAY, AND ON THE TOP OF A COPPER COATED ROD WHICH IS
 HV0877'1 1/2 INCHES BELOW THE SURFACE OF THE GROUND AND IS PROTECTED
 HV0877'BY A 6-INCH METAL PIPE WHICH IS LEVEL WITH THE SURFACE OF THE
 HV0877'GROUND.  THE ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 39 1/2
 HV0877'FEET.
 HV0877
 HV0877                          STATION RECOVERY (1975)
 HV0877
 HV0877'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0877'RECOVERED IN GOOD CONDITION.
 HV0877
 HV0877                          STATION RECOVERY (2019)
 HV0877
 HV0877'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HV0877'THE CEMETERY ENTRANCE APPEARS TO HAVE BEEN RECONSTRUCTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1600 ***********************************************************************
 HV1600  DESIGNATION -  C 132
 HV1600  PID         -  HV1600
 HV1600  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1600  COUNTRY     -  US
 HV1600  USGS QUAD   -  DEALE (2016)
 HV1600
 HV1600                         *CURRENT SURVEY CONTROL
 HV1600  ______________________________________________________________________
 HV1600* NAD 83(1986) POSITION- 38 49 37.4    (N) 076 36 49.5    (W)   HD_HELD2
 HV1600* NAVD 88 ORTHO HEIGHT -    52.686 (meters)      172.85  (feet) ADJUSTED
 HV1600  ______________________________________________________________________
 HV1600  GEOID HEIGHT    -        -33.302 (meters)                     GEOID18
 HV1600  DYNAMIC HEIGHT  -         52.656 (meters)      172.76  (feet) COMP
 HV1600  MODELED GRAVITY -    980,056.7   (mgal)                       NAVD 88
 HV1600
 HV1600  VERT ORDER      -  FIRST     CLASS II
 HV1600
 HV1600.The horizontal coordinates were established by autonomous hand held GPS
 HV1600.observations and have an estimated accuracy of +/- 10 meters.
 HV1600
 HV1600.The orthometric height was determined by differential leveling and
 HV1600.adjusted by the NATIONAL GEODETIC SURVEY
 HV1600.in June 1991.
 HV1600
 HV1600.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1600.GEOID18 height accuracy estimate available here.
 HV1600
 HV1600.Click photographs - Photos may exist for this station.
 HV1600
 HV1600.The dynamic height is computed by dividing the NAVD 88
 HV1600.geopotential number by the normal gravity value computed on the
 HV1600.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1600.degrees latitude (g = 980.6199 gals.).
 HV1600
 HV1600.The modeled gravity was interpolated from observed gravity values.
 HV1600
 HV1600;                    North         East    Units  Estimated Accuracy
 HV1600;SPC MD       -   128,879.      433,539.      MT  (+/- 10 meters HH2 GPS)
 HV1600
 HV1600_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5991998822(NAD 83)
 HV1600
 HV1600                          SUPERSEDED SURVEY CONTROL
 HV1600
 HV1600  NGVD 29 (11/26/84)   52.924  (m)          173.63   (f) ADJUSTED    1 2
 HV1600
 HV1600.Superseded values are not recommended for survey control.
 HV1600
 HV1600.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1600.See file dsdata.pdf to determine how the superseded data were derived.
 HV1600
 HV1600_MARKER: DB = BENCH MARK DISK
 HV1600_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1600_SP_SET: SCHOOL BUILDING
 HV1600_STAMPING: C 132 1971
 HV1600_MARK LOGO: CGS
 HV1600_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1600_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1600+SATELLITE: SATELLITE OBSERVATIONS - November 14, 2004
 HV1600
 HV1600  HISTORY     - Date     Condition        Report By
 HV1600  HISTORY     - 1971     MONUMENTED       NGS
 HV1600  HISTORY     - 1972     GOOD             NGS
 HV1600  HISTORY     - 20041114 GOOD             USPSQD
 HV1600
 HV1600                          STATION DESCRIPTION
 HV1600
 HV1600'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1600'AT LOTHIAN.
 HV1600'AT LOTHIAN, ABOUT 0.2 MILE SOUTHWEST ALONG STATE HIGHWAY 2 FROM
 HV1600'THE POST OFFICE AT LOTHIAN, THENCE 0.2 MILE SOUTHEAST ALONG STATE
 HV1600'HIGHWAY 2, AT THE LOTHIAN ELEMENTARY SCHOOL, SET VERTICALLY IN THE
 HV1600'WEST BRICK FACE AND AT THE NORTHWEST CORNER OF THE SCHOOL, 182.5
 HV1600'FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 12 FEET SOUTH OF THE
 HV1600'SOUTH CURB OF A DRIVEWAY TO SCHOOL, 2.5 FEET ABOVE THE LEVEL OF
 HV1600'THE GROUND AND 2 FEET ABOVE THE LEVEL OF THE HIGHWAY.
 HV1600
 HV1600                          STATION RECOVERY (2004)
 HV1600
 HV1600'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1600'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0943 ***********************************************************************
 HV0943  DESIGNATION -  C 133
 HV0943  PID         -  HV0943
 HV0943  STATE/COUNTY-  MD/CALVERT
 HV0943  COUNTRY     -  US
 HV0943  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0943
 HV0943                         *CURRENT SURVEY CONTROL
 HV0943  ______________________________________________________________________
 HV0943* NAD 83(1986) POSITION- 38 33 31.     (N) 076 35 58.     (W)   SCALED
 HV0943* NAVD 88 ORTHO HEIGHT -    44.425 (meters)      145.75  (feet) ADJUSTED
 HV0943  ______________________________________________________________________
 HV0943  GEOID HEIGHT    -        -33.779 (meters)                     GEOID18
 HV0943  DYNAMIC HEIGHT  -         44.399 (meters)      145.67  (feet) COMP
 HV0943  MODELED GRAVITY -    980,032.9   (mgal)                       NAVD 88
 HV0943
 HV0943  VERT ORDER      -  FIRST     CLASS II
 HV0943
 HV0943.The horizontal coordinates were scaled from a map and have
 HV0943.an estimated accuracy of +/- 6 seconds.
 HV0943
 HV0943.The orthometric height was determined by differential leveling and
 HV0943.adjusted by the NATIONAL GEODETIC SURVEY
 HV0943.in June 1991.
 HV0943
 HV0943.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0943.GEOID18 height accuracy estimate available here.
 HV0943
 HV0943.Click photographs - Photos may exist for this station.
 HV0943
 HV0943.The dynamic height is computed by dividing the NAVD 88
 HV0943.geopotential number by the normal gravity value computed on the
 HV0943.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0943.degrees latitude (g = 980.6199 gals.).
 HV0943
 HV0943.The modeled gravity was interpolated from observed gravity values.
 HV0943
 HV0943;                    North         East    Units  Estimated Accuracy
 HV0943;SPC MD       -    99,090.      434,910.      MT  (+/- 180 meters Scaled)
 HV0943
 HV0943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH606690(NAD 83)
 HV0943
 HV0943                          SUPERSEDED SURVEY CONTROL
 HV0943
 HV0943  NGVD 29 (11/26/84)   44.670  (m)          146.55   (f) ADJUSTED    1 2
 HV0943
 HV0943.Superseded values are not recommended for survey control.
 HV0943
 HV0943.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0943.See file dsdata.pdf to determine how the superseded data were derived.
 HV0943
 HV0943_MARKER: DB = BENCH MARK DISK
 HV0943_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0943+WITH SETTING: INTO GROUND
 HV0943_STAMPING: C 133 1971
 HV0943_MARK LOGO: CGS
 HV0943_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0943+STABILITY: SURFACE MOTION
 HV0943
 HV0943  HISTORY     - Date     Condition        Report By
 HV0943  HISTORY     - 1971     MONUMENTED       NGS
 HV0943  HISTORY     - 1972     GOOD             NGS
 HV0943  HISTORY     - 19910115 GOOD             NGS
 HV0943
 HV0943                          STATION DESCRIPTION
 HV0943
 HV0943'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV0943'1.6 MI NW FROM PRINCE FREDERICK.
 HV0943'ABOUT 1.65 MILES NORTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0943'INTERSECTION OF STATE HIGHWAY 231 AT PRINCE FREDERICK, 0.85
 HV0943'MILE NORTHWEST OF THE CALVERT COUNTY JUNIOR HIGH SCHOOL, NEAR THE
 HV0943'JUNCTION OF STOAKLEY ROAD, ACROSS THE HIGHWAY FROM THE CALVERT
 HV0943'COUNTY HOSPITAL, 167 FEET NORTH OF THE CENTER LINE OF STOAKLEY
 HV0943'ROAD, 37 FEET WEST OF THE CENTER LINE OF THE SOUTHBOUND LANE OF
 HV0943'THE HIGHWAY, 2 FEET SOUTH OF A POWER LINE POLE, 1 FOOT NORHT OF A
 HV0943'METAL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, AND ON THE
 HV0943'TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO
 HV0943'A METAL BASE PLATE.  THE DISK IS FLUSH WITH THE GROUND AND ENCASED
 HV0943'IN A 6 INCH STEEL PIPE THAT PROJECTS 2 INCHES ABOVE THE LEVEL OF
 HV0943'THE GROUND.
 HV0943
 HV0943                          STATION RECOVERY (1991)
 HV0943
 HV0943'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV0943'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0359 ***********************************************************************
 HV0359  DESIGNATION -  C 134
 HV0359  PID         -  HV0359
 HV0359  STATE/COUNTY-  MD/CALVERT
 HV0359  COUNTRY     -  US
 HV0359  USGS QUAD   -  COVE POINT (2016)
 HV0359
 HV0359                         *CURRENT SURVEY CONTROL
 HV0359  ______________________________________________________________________
 HV0359* NAD 83(1986) POSITION- 38 26 49.     (N) 076 29 06.     (W)   SCALED
 HV0359* NAVD 88 ORTHO HEIGHT -    12.256 (meters)       40.21  (feet) ADJUSTED
 HV0359  ______________________________________________________________________
 HV0359  GEOID HEIGHT    -        -34.220 (meters)                     GEOID18
 HV0359  DYNAMIC HEIGHT  -         12.248 (meters)       40.18  (feet) COMP
 HV0359  MODELED GRAVITY -    980,020.7   (mgal)                       NAVD 88
 HV0359
 HV0359  VERT ORDER      -  FIRST     CLASS II
 HV0359
 HV0359.The horizontal coordinates were scaled from a map and have
 HV0359.an estimated accuracy of +/- 6 seconds.
 HV0359
 HV0359.The orthometric height was determined by differential leveling and
 HV0359.adjusted by the NATIONAL GEODETIC SURVEY
 HV0359.in June 1991.
 HV0359
 HV0359.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0359.GEOID18 height accuracy estimate available here.
 HV0359
 HV0359.Click photographs - Photos may exist for this station.
 HV0359
 HV0359.The dynamic height is computed by dividing the NAVD 88
 HV0359.geopotential number by the normal gravity value computed on the
 HV0359.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0359.degrees latitude (g = 980.6199 gals.).
 HV0359
 HV0359.The modeled gravity was interpolated from observed gravity values.
 HV0359
 HV0359;                    North         East    Units  Estimated Accuracy
 HV0359;SPC MD       -    86,740.      444,960.      MT  (+/- 180 meters Scaled)
 HV0359
 HV0359_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH704564(NAD 83)
 HV0359
 HV0359                          SUPERSEDED SURVEY CONTROL
 HV0359
 HV0359  NGVD 29 (11/26/84)   12.500  (m)           41.01   (f) ADJUSTED    1 2
 HV0359
 HV0359.Superseded values are not recommended for survey control.
 HV0359
 HV0359.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0359.See file dsdata.pdf to determine how the superseded data were derived.
 HV0359
 HV0359_MARKER: DB = BENCH MARK DISK
 HV0359_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0359_STAMPING: C 134 1971
 HV0359_MARK LOGO: CGS
 HV0359_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0359
 HV0359  HISTORY     - Date     Condition        Report By
 HV0359  HISTORY     - 1971     MONUMENTED       NGS
 HV0359
 HV0359                          STATION DESCRIPTION
 HV0359
 HV0359'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0359'2.4 MI SE FROM ST LEONARD.
 HV0359'ABOUT 2.35 MILES SOUTHEAST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0359'POST OFFICE AT ST LEONARD, ABOUT 1.95 MILE NORTHWEST OF THE
 HV0359'CALVERT CHRISTIAN SCHOOL, 0.1 MILE EAST OF THE JUNCTION OF A GRAVEL
 HV0359'ROAD LEADING SOUTHEAST, 36 FEET SOUTH OF THE CENTER LINE OF THE
 HV0359'HIGHWAY, 84 FEET SOUTHEAST OF AND ACROSS THE HIGHWAY FROM
 HV0359'UNDERGROUND CABLE MARKER NO. 271, 2 1/2 FEET EAST OF POWER LINE
 HV0359'POLE NO. 242, 1 FOOT WEST OF A METAL WITNESS POST, ABOUT LEVEL
 HV0359'WITH THE HIGHWAY AND IS A DISK ON THE TOP OF A COPPER COATED
 HV0359'STEEL ROD FLUSH WITH THE GROUND AND ENCASED IN A 6 INCH PIPE
 HV0359'PROJECTING 1 INCH ABOVE THE LEVEL OF THE GROUND.  THE ROD WAS
 HV0359'DRIVEN TO A DEPTH OF 24 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7945 ***********************************************************************
 HV7945  DESIGNATION -  C 134 RESET
 HV7945  PID         -  HV7945
 HV7945  STATE/COUNTY-  MD/CALVERT
 HV7945  COUNTRY     -  US
 HV7945  USGS QUAD   -  COVE POINT (2016)
 HV7945
 HV7945                         *CURRENT SURVEY CONTROL
 HV7945  ______________________________________________________________________
 HV7945* NAD 83(1986) POSITION- 38 26 49.     (N) 076 29 06.     (W)   SCALED
 HV7945* NAVD 88 ORTHO HEIGHT -    12.18  (+/-2cm)       40.0   (feet) VERTCON3
 HV7945  ______________________________________________________________________
 HV7945  GEOID HEIGHT    -        -34.220 (meters)                     GEOID18
 HV7945  VERT ORDER      -  THIRD (See Below)
 HV7945
 HV7945.The horizontal coordinates were scaled from a map and have
 HV7945.an estimated accuracy of +/- 6 seconds.
 HV7945
 HV7945.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7945.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7945
 HV7945.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7945.GEOID18 height accuracy estimate available here.
 HV7945
 HV7945.The vertical order pertains to the NGVD 29 superseded value.
 HV7945
 HV7945.Click photographs - Photos may exist for this station.
 HV7945
 HV7945;                    North         East    Units  Estimated Accuracy
 HV7945;SPC MD       -    86,740.      444,960.      MT  (+/- 180 meters Scaled)
 HV7945
 HV7945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH704564(NAD 83)
 HV7945
 HV7945                          SUPERSEDED SURVEY CONTROL
 HV7945
 HV7945  NGVD 29 (??/??/??)   12.46   (m)           40.9    (f) RESET       3  
 HV7945
 HV7945.Superseded values are not recommended for survey control.
 HV7945
 HV7945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7945.See file dsdata.pdf to determine how the superseded data were derived.
 HV7945
 HV7945_MARKER: DV = VERTICAL CONTROL DISK
 HV7945_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7945_STAMPING: C 134 RESET 1980
 HV7945_MARK LOGO: NGS
 HV7945_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7945+STABILITY: SURFACE MOTION
 HV7945_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7945+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2006
 HV7945
 HV7945  HISTORY     - Date     Condition        Report By
 HV7945  HISTORY     - 1980     MONUMENTED       NGS
 HV7945  HISTORY     - 20060329 GOOD             GPSSS
 HV7945
 HV7945                          STATION DESCRIPTION
 HV7945
 HV7945'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 HV7945'2.35 MI SE FROM ST LEONARD.
 HV7945'LOCATED 2.35 MILES SOUTHEAST ALONG HIGHWAYS 2 AND 4 FROM THE POST
 HV7945'OFFICE IN ST LEONARD, 1.95 MILE NORTHWEST OF THE CALVERT CHRISTIAN
 HV7945'SCHOOL, 121 FEET SOUTHEAST AND ACROSS THE HIGHWAY FROM A UNDERGOUND
 HV7945'CABLE MARKER NUMBERED 271, 73 FEET SOUTH OF THE CENTER OF THE HIGH-
 HV7945'WAY AND 37 FEET EAST OF A POWERLINE POLE NUMBERED 242.
 HV7945
 HV7945                          STATION RECOVERY (2006)
 HV7945
 HV7945'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (BD)
 HV7945'RECOVERED BY HAL OF C.O.A.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0572 ***********************************************************************
 HV0572  DESIGNATION -  C 135
 HV0572  PID         -  HV0572
 HV0572  STATE/COUNTY-  MD/ST MARYS
 HV0572  COUNTRY     -  US
 HV0572  USGS QUAD   -  PINEY POINT (2016)
 HV0572
 HV0572                         *CURRENT SURVEY CONTROL
 HV0572  ______________________________________________________________________
 HV0572* NAD 83(1986) POSITION- 38 14 17.     (N) 076 31 22.     (W)   SCALED
 HV0572* NAVD 88 ORTHO HEIGHT -    29.329 (meters)       96.22  (feet) ADJUSTED
 HV0572  ______________________________________________________________________
 HV0572  GEOID HEIGHT    -        -34.354 (meters)                     GEOID18
 HV0572  DYNAMIC HEIGHT  -         29.311 (meters)       96.16  (feet) COMP
 HV0572  MODELED GRAVITY -    980,002.2   (mgal)                       NAVD 88
 HV0572
 HV0572  VERT ORDER      -  FIRST     CLASS II
 HV0572
 HV0572.The horizontal coordinates were scaled from a map and have
 HV0572.an estimated accuracy of +/- 6 seconds.
 HV0572
 HV0572.The orthometric height was determined by differential leveling and
 HV0572.adjusted by the NATIONAL GEODETIC SURVEY
 HV0572.in June 1991.
 HV0572
 HV0572.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0572.GEOID18 height accuracy estimate available here.
 HV0572
 HV0572.Click photographs - Photos may exist for this station.
 HV0572
 HV0572.The dynamic height is computed by dividing the NAVD 88
 HV0572.geopotential number by the normal gravity value computed on the
 HV0572.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0572.degrees latitude (g = 980.6199 gals.).
 HV0572
 HV0572.The modeled gravity was interpolated from observed gravity values.
 HV0572
 HV0572;                    North         East    Units  Estimated Accuracy
 HV0572;SPC MD       -    63,540.      441,780.      MT  (+/- 180 meters Scaled)
 HV0572
 HV0572_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH667333(NAD 83)
 HV0572
 HV0572                          SUPERSEDED SURVEY CONTROL
 HV0572
 HV0572  NGVD 29 (11/26/84)   29.569  (m)           97.01   (f) ADJUSTED    1 2
 HV0572
 HV0572.Superseded values are not recommended for survey control.
 HV0572
 HV0572.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0572.See file dsdata.pdf to determine how the superseded data were derived.
 HV0572
 HV0572_MARKER: DB = BENCH MARK DISK
 HV0572_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0572+WITH SETTING: INTO GROUND
 HV0572_STAMPING: C 135 1971
 HV0572_MARK LOGO: CGS
 HV0572_PROJECTION: RECESSED 3 CENTIMETERS
 HV0572_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0572+STABILITY: SURFACE MOTION
 HV0572
 HV0572  HISTORY     - Date     Condition        Report By
 HV0572  HISTORY     - 1971     MONUMENTED       NGS
 HV0572  HISTORY     - 19910103 MARK NOT FOUND   NGS
 HV0572
 HV0572                          STATION DESCRIPTION
 HV0572
 HV0572'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0572'AT CALLAWAY.
 HV0572'AT CALLAWAY, AT THE JUNCTION OF STATE HIGHWAY 249 AND STATE
 HV0572'HIGHWAY 5, ABOUT 1.45 MILES WEST ALONG STATE HIGHWAY 5 FROM THE
 HV0572'WEST JUNCTION OF STATE HIGHWAY 249 AT GREAT MILLS, AT A DRIVEWAY
 HV0572'LEADING TO A 1 1/2 STORY BUILDING AT CALLAWAY (GROCERY STORE),
 HV0572'182 FEET SOUTH OF THE CENTER LINE OF STATE HIGHWAY 5, 34 FEET
 HV0572'WEST OF THE CENTER LINE OF STATE HIGHWAY 249, 41.3 FEET SOUTHEAST
 HV0572'OF THE SOUTH STEEL GATE POST ACROSS A SIDEWALK, 22 1/2 FEET
 HV0572'NORTH OF THE CENTER LINE OF A DRIVEWAY, 2 FEET NORTH OF TELEPHONE
 HV0572'POLE NO. 1, ABOUT LEVEL WITH THE HIGHWAY AND IS A DISK ON THE
 HV0572'TOP OF A COPPER COATED STEEL ROD ONE INCH BELOW THE LEVEL OF THE
 HV0572'GROUND AND PROTECTED BY A 6 INCH STEEL PIPE THAT IS FLUSH WITH
 HV0572'THE GROUND AND ATTACHED TO A METAL BASE PLATE.
 HV0572
 HV0572                          STATION RECOVERY (1991)
 HV0572
 HV0572'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV0572'THERE HAS BEEN UTILITY CONSTRUCTION AT THE DESCRIBED LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7790 ***********************************************************************
 HV7790  DESIGNATION -  C 136
 HV7790  PID         -  HV7790
 HV7790  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7790  COUNTRY     -  US
 HV7790  USGS QUAD   -  BRISTOL (2016)
 HV7790
 HV7790                         *CURRENT SURVEY CONTROL
 HV7790  ______________________________________________________________________
 HV7790* NAD 83(1986) POSITION- 38 48 49.     (N) 076 44 19.     (W)   SCALED
 HV7790* NAVD 88 ORTHO HEIGHT -     6.940 (meters)       22.77  (feet) ADJUSTED
 HV7790  ______________________________________________________________________
 HV7790  GEOID HEIGHT    -        -32.966 (meters)                     GEOID18
 HV7790  DYNAMIC HEIGHT  -          6.936 (meters)       22.76  (feet) COMP
 HV7790  MODELED GRAVITY -    980,065.7   (mgal)                       NAVD 88
 HV7790
 HV7790  VERT ORDER      -  FIRST     CLASS II
 HV7790
 HV7790.The horizontal coordinates were scaled from a map and have
 HV7790.an estimated accuracy of +/- 6 seconds.
 HV7790
 HV7790.The orthometric height was determined by differential leveling and
 HV7790.adjusted by the NATIONAL GEODETIC SURVEY
 HV7790.in June 1991.
 HV7790
 HV7790.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7790.GEOID18 height accuracy estimate available here.
 HV7790
 HV7790.Click photographs - Photos may exist for this station.
 HV7790
 HV7790.The dynamic height is computed by dividing the NAVD 88
 HV7790.geopotential number by the normal gravity value computed on the
 HV7790.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7790.degrees latitude (g = 980.6199 gals.).
 HV7790
 HV7790.The modeled gravity was interpolated from observed gravity values.
 HV7790
 HV7790;                    North         East    Units  Estimated Accuracy
 HV7790;SPC MD       -   127,350.      422,700.      MT  (+/- 180 meters Scaled)
 HV7790
 HV7790_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH490975(NAD 83)
 HV7790
 HV7790                          SUPERSEDED SURVEY CONTROL
 HV7790
 HV7790  NGVD 29 (11/26/84)    7.175  (m)           23.54   (f) ADJUSTED    1 2
 HV7790
 HV7790.Superseded values are not recommended for survey control.
 HV7790
 HV7790.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7790.See file dsdata.pdf to determine how the superseded data were derived.
 HV7790
 HV7790_MARKER: DV = VERTICAL CONTROL DISK
 HV7790_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV7790_STAMPING: C 136 1975
 HV7790_MARK LOGO: NGS
 HV7790_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7790
 HV7790  HISTORY     - Date     Condition        Report By
 HV7790  HISTORY     - 1975     MONUMENTED       NGS
 HV7790
 HV7790                          STATION DESCRIPTION
 HV7790
 HV7790'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7790'IN UPPER MARLBORO.
 HV7790'AT THE INTERSECTION OF U.S. HIGHWAY 301 AND STATE HIGHWAY 4 AT UPPER
 HV7790'MARLBORO. SET IN THE MEDIAN. 39 FEET WEST OF THE CENTERLINE OF THE
 HV7790'NORTHBOUND LANE OF U.S. HIGHWAY 301. 34 FEET EAST OF THE CENTERLINE OF
 HV7790'THE SOUTHBOUND LANES OF U.S. HIGHWAY 301. 6.4 FEET SOUTH OF THE MOST
 HV7790'SOUTHERLY ONE OF 3 CONCRETE PILLARS SUPPORTING STATE HIGHWAY 4
 HV7790'EASTBOUND LANES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7801 ***********************************************************************
 HV7801  DESIGNATION -  C 137
 HV7801  PID         -  HV7801
 HV7801  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7801  COUNTRY     -  US
 HV7801  USGS QUAD   -  BOWIE (2016)
 HV7801
 HV7801                         *CURRENT SURVEY CONTROL
 HV7801  ______________________________________________________________________
 HV7801* NAD 83(1986) POSITION- 38 56 33.     (N) 076 43 06.     (W)   SCALED
 HV7801* NAVD 88 ORTHO HEIGHT -    33.222 (meters)      109.00  (feet) ADJUSTED
 HV7801  ______________________________________________________________________
 HV7801  GEOID HEIGHT    -        -32.793 (meters)                     GEOID18
 HV7801  DYNAMIC HEIGHT  -         33.204 (meters)      108.94  (feet) COMP
 HV7801  MODELED GRAVITY -    980,079.2   (mgal)                       NAVD 88
 HV7801
 HV7801  VERT ORDER      -  FIRST     CLASS II
 HV7801
 HV7801.The horizontal coordinates were scaled from a map and have
 HV7801.an estimated accuracy of +/- 6 seconds.
 HV7801
 HV7801.The orthometric height was determined by differential leveling and
 HV7801.adjusted by the NATIONAL GEODETIC SURVEY
 HV7801.in June 1991.
 HV7801
 HV7801.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7801.GEOID18 height accuracy estimate available here.
 HV7801
 HV7801.Click photographs - Photos may exist for this station.
 HV7801
 HV7801.The dynamic height is computed by dividing the NAVD 88
 HV7801.geopotential number by the normal gravity value computed on the
 HV7801.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7801.degrees latitude (g = 980.6199 gals.).
 HV7801
 HV7801.The modeled gravity was interpolated from observed gravity values.
 HV7801
 HV7801;                    North         East    Units  Estimated Accuracy
 HV7801;SPC MD       -   141,660.      424,420.      MT  (+/- 180 meters Scaled)
 HV7801
 HV7801_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ510117(NAD 83)
 HV7801
 HV7801                          SUPERSEDED SURVEY CONTROL
 HV7801
 HV7801  NGVD 29 (11/26/84)   33.458  (m)          109.77   (f) ADJUSTED    1 2
 HV7801
 HV7801.Superseded values are not recommended for survey control.
 HV7801
 HV7801.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7801.See file dsdata.pdf to determine how the superseded data were derived.
 HV7801
 HV7801_MARKER: DV = VERTICAL CONTROL DISK
 HV7801_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV7801+WITH SETTING: INTO GROUND
 HV7801_STAMPING: C 137 1975
 HV7801_MARK LOGO: NGS
 HV7801_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7801+STABILITY: SURFACE MOTION
 HV7801
 HV7801  HISTORY     - Date     Condition        Report By
 HV7801  HISTORY     - 1975     MONUMENTED       NGS
 HV7801
 HV7801                          STATION DESCRIPTION
 HV7801
 HV7801'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7801'2.4 MI NORTH FROM BOWIE.
 HV7801'0.15 MILES EAST ALONG POINTER RIDGE DRIVE FROM THE BOWIE VOLUNTEER
 HV7801'FIRE DEPARTMENT AND RESCUE SQUAD NO 3. THENCE 2.25 MILES NORTH ALONG
 HV7801'U.S. HIGHWAY 301 SET IN THE TRAFFIC ISLAND AT THE CORNER OF U.S.
 HV7801'HIGHWAY 301 AND STATE HIGHWAY 197. ACROSS FROM RIPS RESTAURANT. 24
 HV7801'FEET WEST OF THE CENTERLINE OF THE SOUTHBOUND LANE OF U.S. HIGHWAY 301
 HV7801'. 31 FEET NORTH OF THE CENTERLINE OF STATE HIGHWAY 197. 15.6 FEET
 HV7801'NORTH OF THE CURB OF STATE HIGHWAY 197. 12.1 FEET WEST OF THE CURB OF
 HV7801'U.S. HIGHWAY 301. 20 FEET NORTHWEST OF POWER POLE NO 482044.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8877 ***********************************************************************
 HV8877  DESIGNATION -  C 137 RESET
 HV8877  PID         -  HV8877
 HV8877  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8877  COUNTRY     -  US
 HV8877  USGS QUAD   -  BOWIE (2016)
 HV8877
 HV8877                         *CURRENT SURVEY CONTROL
 HV8877  ______________________________________________________________________
 HV8877* NAD 83(1986) POSITION- 38 56 39.8    (N) 076 43 03.0    (W)   HD_HELD2
 HV8877* NAVD 88 ORTHO HEIGHT -    33.307 (meters)      109.27  (feet) ADJUSTED
 HV8877  ______________________________________________________________________
 HV8877  GEOID HEIGHT    -        -32.792 (meters)                     GEOID18
 HV8877  DYNAMIC HEIGHT  -         33.289 (meters)      109.22  (feet) COMP
 HV8877  MODELED GRAVITY -    980,079.2   (mgal)                       NAVD 88
 HV8877
 HV8877  VERT ORDER      -  SECOND    CLASS I
 HV8877
 HV8877.The horizontal coordinates were established by autonomous hand held GPS
 HV8877.observations and have an estimated accuracy of +/- 10 meters.
 HV8877
 HV8877.The orthometric height was determined by differential leveling and
 HV8877.adjusted by the NATIONAL GEODETIC SURVEY
 HV8877.in November 2012.
 HV8877
 HV8877.No vertical observational check was made to the station.
 HV8877
 HV8877.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8877.GEOID18 height accuracy estimate available here.
 HV8877
 HV8877.Click photographs - Photos may exist for this station.
 HV8877
 HV8877.The dynamic height is computed by dividing the NAVD 88
 HV8877.geopotential number by the normal gravity value computed on the
 HV8877.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8877.degrees latitude (g = 980.6199 gals.).
 HV8877
 HV8877.The modeled gravity was interpolated from observed gravity values.
 HV8877
 HV8877;                    North         East    Units  Estimated Accuracy
 HV8877;SPC MD       -   141,871.      424,490.      MT  (+/- 10 meters HH2 GPS)
 HV8877
 HV8877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5115712007(NAD 83)
 HV8877
 HV8877                          SUPERSEDED SURVEY CONTROL
 HV8877
 HV8877  NAVD 88 (11/18/05)   33.310  (m)          109.28   (f) SUPERSEDED  3 0
 HV8877  NGVD 29 (11/18/05)   33.55   (m)          110.1    (f) RESET       3  
 HV8877
 HV8877.Superseded values are not recommended for survey control.
 HV8877
 HV8877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8877.See file dsdata.pdf to determine how the superseded data were derived.
 HV8877
 HV8877_MARKER: DV = VERTICAL CONTROL DISK
 HV8877_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8877_STAMPING: C 137 RESET 1990
 HV8877_MARK LOGO: NGS
 HV8877_PROJECTION: FLUSH
 HV8877_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8877_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8877_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8877+SATELLITE: SATELLITE OBSERVATIONS - May 13, 2009
 HV8877_ROD/PIPE-DEPTH: 4.88 meters
 HV8877
 HV8877  HISTORY     - Date     Condition        Report By
 HV8877  HISTORY     - 1990     MONUMENTED       NGS
 HV8877  HISTORY     - 20090513 GOOD             MDSHA
 HV8877
 HV8877                          STATION DESCRIPTION
 HV8877
 HV8877'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8877'0.15 MILES EAST ALONG POINTER RIDGE DRIVE, FROM THE BOWIE VOLUNTEER
 HV8877'FIRE AND RESCUE SQUAD, THENCE 2.35 MILES NORTH ALONG U.S. HIGHWAY
 HV8877'301, 0.1 MILES NORTH OF JUNCTION OF STATE HIGHWAY 197 (COLLINGTON
 HV8877'ROAD), 83.0 FT (25.3 M) EAST OF CENTERLINE OF NORTH BOUND LANE OF
 HV8877'U.S. HIGHWAY 301, 30.0 FT (9.1 M) WEST OF CENTERLINE OF GRAVEL ROAD
 HV8877'LEADING TO THE PARK, 100.0 FT (30.5 M) SOUTH-SOUTHWEST OF POWER POLE
 HV8877'503068, AND 1.5 FT (0.5 M) WEST OF THE CENTERLINE OF THE WEST END OF
 HV8877'A WOODEN PLANTER SURROUNDING ENTRANCE SIGN OF THE PARK.
 HV8877
 HV8877                          STATION RECOVERY (2009)
 HV8877
 HV8877'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 HV8877'RECOVERED IN GOOD CONDITION.
 HV8877'
 HV8877'NOTE-ADDITIONS.  THE WOODEN PLANTER IS NOW GONE.  THE MARK IS 25.5
 HV8877'WEST OF THE EDGE OF AN OLD DEAD END ROAD BED AND IN FRONT OF A
 HV8877'CHICK-FIL-A RESTAURANT, 2.0 FT (0.6 M) WEST OF A CARSONITE WITNESS
 HV8877'POST AND 47.6 FT (14.5 M) EAST OF THE EDGE OF THE SHOULDER OF THE
 HV8877'NORTH BOUND SHOULDER OF US ROUTE 301.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1843 ***********************************************************************
 JV1843  DESIGNATION -  C 14
 JV1843  PID         -  JV1843
 JV1843  STATE/COUNTY-  MD/CARROLL
 JV1843  COUNTRY     -  US
 JV1843  USGS QUAD   -  UNION BRIDGE (2016)
 JV1843
 JV1843                         *CURRENT SURVEY CONTROL
 JV1843  ______________________________________________________________________
 JV1843* NAD 83(1986) POSITION- 39 33 48.     (N) 077 08 35.     (W)   SCALED
 JV1843* NAVD 88 ORTHO HEIGHT -   126.802 (meters)      416.02  (feet) ADJUSTED
 JV1843  ______________________________________________________________________
 JV1843  GEOID HEIGHT    -        -32.525 (meters)                     GEOID18
 JV1843  DYNAMIC HEIGHT  -        126.735 (meters)      415.80  (feet) COMP
 JV1843  MODELED GRAVITY -    980,099.2   (mgal)                       NAVD 88
 JV1843
 JV1843  VERT ORDER      -  SECOND    CLASS 0
 JV1843
 JV1843.The horizontal coordinates were scaled from a map and have
 JV1843.an estimated accuracy of +/- 6 seconds.
 JV1843
 JV1843.The orthometric height was determined by differential leveling and
 JV1843.adjusted by the NATIONAL GEODETIC SURVEY
 JV1843.in June 1991.
 JV1843
 JV1843.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1843.GEOID18 height accuracy estimate available here.
 JV1843
 JV1843.Click photographs - Photos may exist for this station.
 JV1843
 JV1843.The dynamic height is computed by dividing the NAVD 88
 JV1843.geopotential number by the normal gravity value computed on the
 JV1843.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1843.degrees latitude (g = 980.6199 gals.).
 JV1843
 JV1843.The modeled gravity was interpolated from observed gravity values.
 JV1843
 JV1843;                    North         East    Units  Estimated Accuracy
 JV1843;SPC MD       -   210,560.      387,710.      MT  (+/- 180 meters Scaled)
 JV1843
 JV1843_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ159814(NAD 83)
 JV1843
 JV1843                          SUPERSEDED SURVEY CONTROL
 JV1843
 JV1843  NGVD 29 (11/26/84)  127.004  (m)          416.68   (f) ADJUSTED    2 0
 JV1843
 JV1843.Superseded values are not recommended for survey control.
 JV1843
 JV1843.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1843.See file dsdata.pdf to determine how the superseded data were derived.
 JV1843
 JV1843_MARKER: DB = BENCH MARK DISK
 JV1843_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1843_STAMPING: C 14 1935
 JV1843_MARK LOGO: CGS
 JV1843_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1843+STABILITY: SURFACE MOTION
 JV1843
 JV1843  HISTORY     - Date     Condition        Report By
 JV1843  HISTORY     - 1935     MONUMENTED       CGS
 JV1843  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV1843
 JV1843                          STATION DESCRIPTION
 JV1843
 JV1843'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1843'AT LINWOOD.
 JV1843'AT LINWOOD, CARROLL COUNTY, ABOUT 54 FEET NORTHEAST OF THE
 JV1843'WESTERN MARYLAND RAILWAY STATION, ABOUT 100 FEET EAST OF THE
 JV1843'CENTER LINE OF A NORTH-AND-SOUTH COUNTY ROAD, ABOUT 51 FEET
 JV1843'NORTH OF A GRAIN ELEVATOR, AND 27 FEET NORTH OF THE CENTER LINE
 JV1843'OF THE TRACK.  A STANDARD DISK, STAMPED C 14 1935 AND SET IN
 JV1843'THE TOP OF A CONCRETE POST.
 JV1843
 JV1843                          STATION RECOVERY (1953)
 JV1843
 JV1843'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JV1843'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1024 ***********************************************************************
 HU1024  DESIGNATION -  C 141
 HU1024  PID         -  HU1024
 HU1024  STATE/COUNTY-  MD/WORCESTER
 HU1024  COUNTRY     -  US
 HU1024  USGS QUAD   -  WHITTINGTON POINT (2016)
 HU1024
 HU1024                         *CURRENT SURVEY CONTROL
 HU1024  ______________________________________________________________________
 HU1024* NAD 83(2011) POSITION- 38 03 33.51442(N) 075 13 16.49537(W)   ADJUSTED
 HU1024* NAD 83(2011) ELLIP HT-   -34.747 (meters)        (06/05/19)   ADJUSTED
 HU1024* NAD 83(2011) EPOCH   -  2010.00
 HU1024* NAVD 88 ORTHO HEIGHT -     1.690 (meters)        5.54  (feet) ADJUSTED
 HU1024  ______________________________________________________________________
 HU1024  GEOID HEIGHT    -        -36.388 (meters)                     GEOID18
 HU1024  NAD 83(2011) X  -  1,282,666.690 (meters)                     COMP
 HU1024  NAD 83(2011) Y  - -4,861,998.799 (meters)                     COMP
 HU1024  NAD 83(2011) Z  -  3,910,608.070 (meters)                     COMP
 HU1024  LAPLACE CORR    -          0.71  (seconds)                    DEFLEC18
 HU1024  DYNAMIC HEIGHT  -          1.689 (meters)        5.54  (feet) COMP
 HU1024  MODELED GRAVITY -    979,977.9   (mgal)                       NAVD 88
 HU1024
 HU1024  VERT ORDER      -  SECOND    CLASS I
 HU1024
 HU1024  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1024  Standards:
 HU1024         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1024            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1024  -------------------------------------------------------------------
 HU1024  NETWORK    0.96   0.80           0.47   0.25   0.41      0.00080376
 HU1024  -------------------------------------------------------------------
 HU1024  Click here for local accuracies and other accuracy information.
 HU1024
 HU1024.The horizontal coordinates were established by GPS observations
 HU1024.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 HU1024
 HU1024.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1024.been affixed to the stable North American tectonic plate. See 
 HU1024.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1024
 HU1024.The horizontal coordinates are valid at the epoch date displayed above
 HU1024.which is a decimal equivalence of Year/Month/Day.
 HU1024
 HU1024.The orthometric height was determined by differential leveling and
 HU1024.adjusted by the NATIONAL GEODETIC SURVEY
 HU1024.in June 1991.
 HU1024
 HU1024.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1024.GEOID18 height accuracy estimate available here.
 HU1024
 HU1024.Click photographs - Photos may exist for this station.
 HU1024
 HU1024.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1024
 HU1024.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1024
 HU1024.The ellipsoidal height was determined by GPS observations
 HU1024.and is referenced to NAD 83.
 HU1024
 HU1024.The dynamic height is computed by dividing the NAVD 88
 HU1024.geopotential number by the normal gravity value computed on the
 HU1024.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1024.degrees latitude (g = 980.6199 gals.).
 HU1024
 HU1024.The modeled gravity was interpolated from observed gravity values.
 HU1024
 HU1024. The following values were computed from the NAD 83(2011) position.
 HU1024
 HU1024;                    North         East     Units Scale Factor Converg.
 HU1024;SPC MD       -    45,106.497   556,104.212   MT  1.00005058   +1 06 59.1
 HU1024;SPC MD       -   147,986.90  1,824,485.24   sFT  1.00005058   +1 06 59.1
 HU1024;UTM  18      - 4,212,418.675   480,590.597   MT  0.99960464   -0 08 11.0
 HU1024
 HU1024!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1024!SPC MD       -   1.00000545  x   1.00005058  =   1.00005603
 HU1024!UTM  18      -   1.00000545  x   0.99960464  =   0.99961009
 HU1024
 HU1024_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8059012418(NAD 83)
 HU1024
 HU1024                          SUPERSEDED SURVEY CONTROL
 HU1024
 HU1024  NGVD 29 (11/26/84)    1.933  (m)            6.34   (f) ADJUSTED    2 1
 HU1024
 HU1024.Superseded values are not recommended for survey control.
 HU1024
 HU1024.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1024.See file dsdata.pdf to determine how the superseded data were derived.
 HU1024
 HU1024_MARKER: DV = VERTICAL CONTROL DISK
 HU1024_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1024+WITH SETTING: INTO GROUND
 HU1024_STAMPING: C 141 1977
 HU1024_MARK LOGO: NGS
 HU1024_PROJECTION: FLUSH
 HU1024_MAGNETIC: I = MARKER IS A STEEL ROD
 HU1024_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1024+STABILITY: SURFACE MOTION
 HU1024_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1024+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 HU1024
 HU1024  HISTORY     - Date     Condition        Report By
 HU1024  HISTORY     - 1977     MONUMENTED       NGS
 HU1024  HISTORY     - 1989     GOOD             USPSQD
 HU1024  HISTORY     - 20130305 GOOD             ARCSHE
 HU1024  HISTORY     - 20150316 GOOD             NPS
 HU1024
 HU1024                          STATION DESCRIPTION
 HU1024
 HU1024'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1024'IN ASSATEAGUE ISLAND.
 HU1024'2.4 MILES NORTHEAST ALONG THE SERVICE ROAD FROM THE STATE LINE ON
 HU1024'ASSATEAGUE ISLAND, 57 FEET SOUTH OF POWERLINE POLE 406, 52 FEET
 HU1024'SOUTHEAST OF THE CENTERLINE OF THE ROAD ON THE NORTH SLOPE OF A
 HU1024'DUNE.
 HU1024
 HU1024                          STATION RECOVERY (1989)
 HU1024
 HU1024'RECOVERY NOTE BY US POWER SQUADRON 1989 (FFS)
 HU1024'RECOVERED IN GOOD CONDITION.
 HU1024
 HU1024                          STATION RECOVERY (2013)
 HU1024
 HU1024'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU1024'THE MARK IS LOCATED ABOUT 10.3 MI (16.6 KM) EAST OF STOCKTON, 9.9 MI
 HU1024'(15.9 KM) EAST-SOUTHEAST OF GIRDLETREE AND 8.0 MI (12.9 KM)
 HU1024'EAST-SOUTHEAST OF BOXIRON ON ASSATEAGUE ISLAND.  OWNERSHIP--U.S.
 HU1024'GOVERNMENT.
 HU1024'
 HU1024'TO REACH FROM THE SOUTHEAST END OF THE VERRAZANO BRIDGE OVER
 HU1024'SINEPUXENT BAY, GO SOUTHEAST ON MD 611 FOR 0.62 MI (1.0 KM) TO A SIDE
 HU1024'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ON STEPHEN DECATUR
 HU1024'MEMORIAL ROAD FOR 2.27 MI (3.7 KM) TO A PARK RANGER BOOTH.  CONTINUE
 HU1024'SOUTHWEST ON STEPHEN DECATUR MEMORIAL ROAD FOR 1.22 MI (2.0 KM) TO A
 HU1024'TRAFFIC CIRCLE.  TAKE THE SECOND EXIT AND CONTINUE SOUTHWEST ON
 HU1024'BAYBERRY DRIVE FOR 0.19 MI (0.3 KM) TO THE END OF THE PAVEMENT.
 HU1024'ACTIVATE FOUR WHEEL DRIVE AND CONTINUE SOUTHWEST ON A SAND ROAD AND
 HU1024'ALONG THE BEACH FOR 9.65 MI (15.5 KM) AND PARK VEHICLE.  WALK
 HU1024'NORTHWEST FOR 640 FT (195.1 M) TO THE MARK.
 HU1024'
 HU1024'IT IS 80.0 FT (24.4 M) EAST-SOUTHEAST OF THE CENTERLINE OF AN OLD
 HU1024'BLACKTOP ROADBED AND 2.0 FT (0.6 M) EAST OF A FIBERGLASS WITNESS POST.
 HU1024
 HU1024                          STATION RECOVERY (2015)
 HU1024
 HU1024'RECOVERY NOTE BY NATIONAL PARK SERVICE 2015 (NTW)
 HU1024'THE STATION IS LOCATED AT KM 31.5 IN THE OSV ZONE. FROM BAYBERRY
 HU1024'DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE
 HU1024'REQUIRED). DRIVE SOUTH ON THE BEACH 15.5 KM (9.6 MI), PARK VEHICLE,
 HU1024'AND WALK NORTHWEST FOR 195.1 M (640 FT). THE STATION IS 18.5 M (60.7
 HU1024'FT) EAST OF THE CENTER-LINE OF AN OLD ROADBED AND 50 CM (19.7 IN) EAST
 HU1024'OF AN ORANGE CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3870 ***********************************************************************
 JV3870  DESIGNATION -  C 143
 JV3870  PID         -  JV3870
 JV3870  STATE/COUNTY-  MD/FREDERICK
 JV3870  COUNTRY     -  US
 JV3870  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3870
 JV3870                         *CURRENT SURVEY CONTROL
 JV3870  ______________________________________________________________________
 JV3870* NAD 83(1986) POSITION- 39 16 31.     (N) 077 30 37.     (W)   SCALED
 JV3870* NAVD 88 ORTHO HEIGHT -   109.082 (meters)      357.88  (feet) ADJUSTED
 JV3870  ______________________________________________________________________
 JV3870  GEOID HEIGHT    -        -32.662 (meters)                     GEOID18
 JV3870  DYNAMIC HEIGHT  -        109.022 (meters)      357.68  (feet) COMP
 JV3870  MODELED GRAVITY -    980,082.7   (mgal)                       NAVD 88
 JV3870
 JV3870  VERT ORDER      -  FIRST     CLASS II
 JV3870
 JV3870.The horizontal coordinates were scaled from a map and have
 JV3870.an estimated accuracy of +/- 6 seconds.
 JV3870
 JV3870.The orthometric height was determined by differential leveling and
 JV3870.adjusted by the NATIONAL GEODETIC SURVEY
 JV3870.in June 1991.
 JV3870
 JV3870.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3870.GEOID18 height accuracy estimate available here.
 JV3870
 JV3870.Click photographs - Photos may exist for this station.
 JV3870
 JV3870.The dynamic height is computed by dividing the NAVD 88
 JV3870.geopotential number by the normal gravity value computed on the
 JV3870.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3870.degrees latitude (g = 980.6199 gals.).
 JV3870
 JV3870.The modeled gravity was interpolated from observed gravity values.
 JV3870
 JV3870;                    North         East    Units  Estimated Accuracy
 JV3870;SPC MD       -   178,690.      355,970.      MT  (+/- 180 meters Scaled)
 JV3870
 JV3870_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ834503(NAD 83)
 JV3870
 JV3870                          SUPERSEDED SURVEY CONTROL
 JV3870
 JV3870.No superseded survey control is available for this station.
 JV3870
 JV3870_MARKER: DV = VERTICAL CONTROL DISK
 JV3870_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3870_STAMPING: C 143 1979
 JV3870_MARK LOGO: NGS
 JV3870_PROJECTION: FLUSH
 JV3870_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3870_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3870_ROD/PIPE-DEPTH: 4.57 meters
 JV3870
 JV3870  HISTORY     - Date     Condition        Report By
 JV3870  HISTORY     - 1979     MONUMENTED       NGS
 JV3870  HISTORY     - 20011206 GOOD             MDSHA
 JV3870
 JV3870                          STATION DESCRIPTION
 JV3870
 JV3870'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3870'1.75 MI (2.82 KM) EAST FROM POINT OF ROCKS.  1.75 MI (2.82 KM) EAST
 JV3870'ALONG MD 28 FROM THE JUNCTION OF MD 15 IN POINT OF ROCKS TO THE MARK
 JV3870'ON THE LEFT, SET AT THE SOUTHEAST CORNER OF A MAJOR POWER LINE TOWER
 JV3870'NUMBER 201-37, 288 FT (87.8 M) NORTHEAST OF THE CENTERLINE OF ROUTE
 JV3870'28, 4 FT (1.2 M) SOUTHWEST OF THE SOUTHEAST LEG OF THE TOWER.  THE
 JV3870'MARK IS 1 FT (0.3 M) W FROM A WITNESS POST.  THE MARK IS 4 FT (1.2 M)
 JV3870'HIGHER THAN THE HIGHWAY.
 JV3870
 JV3870                          STATION RECOVERY (2001)
 JV3870
 JV3870'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3870'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3936 ***********************************************************************
 JV3936  DESIGNATION -  C 146
 JV3936  PID         -  JV3936
 JV3936  STATE/COUNTY-  MD/WASHINGTON
 JV3936  COUNTRY     -  US
 JV3936  USGS QUAD   -  HARPERS FERRY (2016)
 JV3936
 JV3936                         *CURRENT SURVEY CONTROL
 JV3936  ______________________________________________________________________
 JV3936* NAD 83(1986) POSITION- 39 20 48.     (N) 077 40 53.     (W)   SCALED
 JV3936* NAVD 88 ORTHO HEIGHT -   155.615 (meters)      510.55  (feet) ADJUSTED
 JV3936  ______________________________________________________________________
 JV3936  GEOID HEIGHT    -        -33.310 (meters)                     GEOID18
 JV3936  DYNAMIC HEIGHT  -        155.527 (meters)      510.26  (feet) COMP
 JV3936  MODELED GRAVITY -    980,054.8   (mgal)                       NAVD 88
 JV3936
 JV3936  VERT ORDER      -  FIRST     CLASS II
 JV3936
 JV3936.The horizontal coordinates were scaled from a map and have
 JV3936.an estimated accuracy of +/- 6 seconds.
 JV3936
 JV3936.The orthometric height was determined by differential leveling and
 JV3936.adjusted by the NATIONAL GEODETIC SURVEY
 JV3936.in June 1991.
 JV3936
 JV3936.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3936.GEOID18 height accuracy estimate available here.
 JV3936
 JV3936.Click photographs - Photos may exist for this station.
 JV3936
 JV3936.The dynamic height is computed by dividing the NAVD 88
 JV3936.geopotential number by the normal gravity value computed on the
 JV3936.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3936.degrees latitude (g = 980.6199 gals.).
 JV3936
 JV3936.The modeled gravity was interpolated from observed gravity values.
 JV3936
 JV3936;                    North         East    Units  Estimated Accuracy
 JV3936;SPC MD       -   186,710.      341,260.      MT  (+/- 180 meters Scaled)
 JV3936
 JV3936_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ689586(NAD 83)
 JV3936
 JV3936                          SUPERSEDED SURVEY CONTROL
 JV3936
 JV3936.No superseded survey control is available for this station.
 JV3936
 JV3936_MARKER: DV = VERTICAL CONTROL DISK
 JV3936_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3936_STAMPING: C 146 1979
 JV3936_MARK LOGO: NGS
 JV3936_PROJECTION: RECESSED
 JV3936_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3936_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3936+SATELLITE: SATELLITE OBSERVATIONS - November 28, 2010
 JV3936_ROD/PIPE-DEPTH: 4.6 meters
 JV3936
 JV3936  HISTORY     - Date     Condition        Report By
 JV3936  HISTORY     - 1979     MONUMENTED       NGS
 JV3936  HISTORY     - 20101128 GOOD             GEOCAC
 JV3936
 JV3936                          STATION DESCRIPTION
 JV3936
 JV3936'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3936'1.05 MI NORTH FROM WEVERTON.
 JV3936'1.05 MILES NORTHEAST ALONG STATE ROUTE 67 FROM THE NORTH END OF THE
 JV3936'ROUTE 67 OVERPASS BRIDGE OVER U.S. HIGHWAY 340 TO THE MARK ON THE
 JV3936'RIGHT, 110 FEET EAST OF THE CENTER LINE OF ROUTE 67, 84 FEET NORTHEAST
 JV3936'OF THE CENTER OF A PAVED DRIVEWAY LEADING TO THE HOUSE OF MR T.F.
 JV3936'SANGER BOX 86A-1, 1.5 FEET NORTH OF POWER POLE 16355, 0.3 MILE SOUTH
 JV3936'OF THE INTERSECTION OF GARRETTS MILL ROAD.
 JV3936'THE MARK IS 1 FT  SW FROM A WITNESS POST.
 JV3936'THE MARK IS 3 FT BELOW HIGHWAY.
 JV3936
 JV3936                          STATION RECOVERY (2010)
 JV3936
 JV3936'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV3936'RECOVERED IN GOOD CONDITION. STATION IS ABOVE LEVEL OF HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3843 ***********************************************************************
 JV3843  DESIGNATION -  C 147
 JV3843  PID         -  JV3843
 JV3843  STATE/COUNTY-  MD/MONTGOMERY
 JV3843  COUNTRY     -  US
 JV3843  USGS QUAD   -  KENSINGTON (2016)
 JV3843
 JV3843                         *CURRENT SURVEY CONTROL
 JV3843  ______________________________________________________________________
 JV3843* NAD 83(1986) POSITION- 39 01 04.     (N) 077 06 03.     (W)   SCALED
 JV3843* NAVD 88 ORTHO HEIGHT -    74.822 (meters)      245.48  (feet) ADJUSTED
 JV3843  ______________________________________________________________________
 JV3843  GEOID HEIGHT    -        -31.841 (meters)                     GEOID18
 JV3843  DYNAMIC HEIGHT  -         74.782 (meters)      245.35  (feet) COMP
 JV3843  MODELED GRAVITY -    980,092.2   (mgal)                       NAVD 88
 JV3843
 JV3843  VERT ORDER      -  FIRST     CLASS II
 JV3843
 JV3843.The horizontal coordinates were scaled from a map and have
 JV3843.an estimated accuracy of +/- 6 seconds.
 JV3843
 JV3843.The orthometric height was determined by differential leveling and
 JV3843.adjusted by the NATIONAL GEODETIC SURVEY
 JV3843.in June 1991.
 JV3843
 JV3843.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3843.GEOID18 height accuracy estimate available here.
 JV3843
 JV3843.Click photographs - Photos may exist for this station.
 JV3843
 JV3843.The dynamic height is computed by dividing the NAVD 88
 JV3843.geopotential number by the normal gravity value computed on the
 JV3843.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3843.degrees latitude (g = 980.6199 gals.).
 JV3843
 JV3843.The modeled gravity was interpolated from observed gravity values.
 JV3843
 JV3843;                    North         East    Units  Estimated Accuracy
 JV3843;SPC MD       -   149,990.      391,270.      MT  (+/- 180 meters Scaled)
 JV3843
 JV3843_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ181208(NAD 83)
 JV3843
 JV3843                          SUPERSEDED SURVEY CONTROL
 JV3843
 JV3843.No superseded survey control is available for this station.
 JV3843
 JV3843_MARKER: DV = VERTICAL CONTROL DISK
 JV3843_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3843_SP_SET: BRIDGE
 JV3843_STAMPING: C 147 1979
 JV3843_MARK LOGO: NGS
 JV3843_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3843
 JV3843  HISTORY     - Date     Condition        Report By
 JV3843  HISTORY     - 1979     MONUMENTED       NGS
 JV3843  HISTORY     - 19950622 GOOD             USPSQD
 JV3843
 JV3843                          STATION DESCRIPTION
 JV3843
 JV3843'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3843'2.65 MI SE FROM ROCKVILLE.
 JV3843'2.65 MILES SOUTHEAST ALONG STATE ROUTE 355, ROCKVILLE PIKE FROM THE
 JV3843'JUNCTION OF MONTROSE ROAD IN ROCKVILLE TO THE MARK ON THE LEFT, SET
 JV3843'IN TOP OF THE NORTHWEST CORNER OF THE ROUTE 355 NORTHBOUND LANE
 JV3843'OVERPASS BRIDGE OVER U.S. HIGHWAY 495, WASHINGTON NATIONAL PIKE,
 JV3843'0.05 MILE SOUTH OF THE EXIT RAMP TO U.S. HIGHWAY 270, FREDERICK
 JV3843'EXIT, 2 FEET NORTHEAST OF A CHAIN LINK GUARD RAIL FENCE, 5 FEET
 JV3843'SOUTHWEST OF THE SOUTHEAST END OF A METAL GUARD RAIL.
 JV3843
 JV3843                          STATION RECOVERY (1995)
 JV3843
 JV3843'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV3843'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3893 ***********************************************************************
 JV3893  DESIGNATION -  C 148
 JV3893  PID         -  JV3893
 JV3893  STATE/COUNTY-  MD/CECIL
 JV3893  COUNTRY     -  US
 JV3893  USGS QUAD   -  CONOWINGO DAM (2016)
 JV3893
 JV3893                         *CURRENT SURVEY CONTROL
 JV3893  ______________________________________________________________________
 JV3893* NAD 83(1986) POSITION- 39 41 35.8    (N) 076 11 58.9    (W)   HD_HELD2
 JV3893* NAVD 88 ORTHO HEIGHT -    94.668 (meters)      310.59  (feet) ADJUSTED
 JV3893  ______________________________________________________________________
 JV3893  GEOID HEIGHT    -        -32.898 (meters)                     GEOID18
 JV3893  DYNAMIC HEIGHT  -         94.622 (meters)      310.44  (feet) COMP
 JV3893  MODELED GRAVITY -    980,139.8   (mgal)                       NAVD 88
 JV3893
 JV3893  VERT ORDER      -  FIRST     CLASS II
 JV3893
 JV3893.The horizontal coordinates were established by autonomous hand held GPS
 JV3893.observations and have an estimated accuracy of +/- 10 meters.
 JV3893
 JV3893.The orthometric height was determined by differential leveling and
 JV3893.adjusted by the NATIONAL GEODETIC SURVEY
 JV3893.in June 1991.
 JV3893
 JV3893.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3893.GEOID18 height accuracy estimate available here.
 JV3893
 JV3893.Click photographs - Photos may exist for this station.
 JV3893
 JV3893.The dynamic height is computed by dividing the NAVD 88
 JV3893.geopotential number by the normal gravity value computed on the
 JV3893.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3893.degrees latitude (g = 980.6199 gals.).
 JV3893
 JV3893.The modeled gravity was interpolated from observed gravity values.
 JV3893
 JV3893;                    North         East    Units  Estimated Accuracy
 JV3893;SPC MD       -   225,275.      468,649.      MT  (+/- 10 meters HH2 GPS)
 JV3893
 JV3893_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9713694402(NAD 83)
 JV3893
 JV3893                          SUPERSEDED SURVEY CONTROL
 JV3893
 JV3893.No superseded survey control is available for this station.
 JV3893
 JV3893_MARKER: DV = VERTICAL CONTROL DISK
 JV3893_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3893_STAMPING: C 148 1979
 JV3893_MARK LOGO: NGS
 JV3893_PROJECTION: FLUSH
 JV3893_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3893_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3893_ROD/PIPE-DEPTH: 4.6 meters
 JV3893
 JV3893  HISTORY     - Date     Condition        Report By
 JV3893  HISTORY     - 1979     MONUMENTED       NGS
 JV3893  HISTORY     - 20120308 GOOD             CCDES
 JV3893  HISTORY     - 20250916 GOOD             PROFLN
 JV3893
 JV3893                          STATION DESCRIPTION
 JV3893
 JV3893'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3893'2.6 MI NW FROM CONOWINGO DAM.
 JV3893'1.75 MILES NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV3893'AT CONOWINGO DAM, THENCE 0.8 MILE NORTH ALONG A PAVED ROAD AT A
 JV3893'Y JUNCTION OF A GRAVEL ROAD LEADING SOUTHEAST, 2.0 MILES SOUTH
 JV3893'OF THE PENNSYLVANIA STATE LINE.  102 FT. NORTH OF A 36 INCH
 JV3893'TREE, 83 FT. SOUTH OF THE CENTER OF THE GRAVEL ROAD, 25 FT. EAST
 JV3893'OF THE CENTER OF THE PAVED ROAD, AND 2.6 FT. EAST OF POWER POLE
 JV3893'NUMBER 26.
 JV3893'THE MARK IS 2 FT  S FROM A WITNESS POST.
 JV3893'THE MARK IS ABOVE LEVEL WITH ROAD.
 JV3893
 JV3893                          STATION RECOVERY (2012)
 JV3893
 JV3893'RECOVERY NOTE BY CECIL COUNTY DEPARTMENT OF 2012 (JEH)
 JV3893'RECOVERED IN GOOD CONDITION.
 JV3893
 JV3893                          STATION RECOVERY (2025)
 JV3893
 JV3893'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV3893'THE GRAVEL ROAD LEADS TO CAMP CONOWINGO.  POLE 26 IS ALSO NUMBERED
 JV3893'30272-41622.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0671 ***********************************************************************
 JW0671  DESIGNATION -  C 15
 JW0671  PID         -  JW0671
 JW0671  STATE/COUNTY-  MD/GARRETT
 JW0671  COUNTRY     -  US
 JW0671  USGS QUAD   -  OAKLAND (2016)
 JW0671
 JW0671                         *CURRENT SURVEY CONTROL
 JW0671  ______________________________________________________________________
 JW0671* NAD 83(1986) POSITION- 39 24 46.02   (N) 079 24 57.69   (W)   HD_HELD1
 JW0671* NAVD 88 ORTHO HEIGHT -   725.655 (meters)     2380.75  (feet) ADJUSTED
 JW0671  ______________________________________________________________________
 JW0671  GEOID HEIGHT    -        -31.142 (meters)                     GEOID18
 JW0671  DYNAMIC HEIGHT  -        725.165 (meters)     2379.15  (feet) COMP
 JW0671  MODELED GRAVITY -    979,926.1   (mgal)                       NAVD 88
 JW0671
 JW0671  VERT ORDER      -  FIRST     CLASS II
 JW0671
 JW0671.The horizontal coordinates were determined by differentially corrected
 JW0671.hand held GPS observations or other comparable positioning techniques
 JW0671.and have an estimated accuracy of +/- 3 meters.
 JW0671
 JW0671.The orthometric height was determined by differential leveling and
 JW0671.adjusted by the NATIONAL GEODETIC SURVEY
 JW0671.in June 1991.
 JW0671
 JW0671.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0671.GEOID18 height accuracy estimate available here.
 JW0671
 JW0671.Click photographs - Photos may exist for this station.
 JW0671
 JW0671.The dynamic height is computed by dividing the NAVD 88
 JW0671.geopotential number by the normal gravity value computed on the
 JW0671.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0671.degrees latitude (g = 980.6199 gals.).
 JW0671
 JW0671.The modeled gravity was interpolated from observed gravity values.
 JW0671
 JW0671;                    North         East    Units  Estimated Accuracy
 JW0671;SPC MD       -   196,584.9     191,955.5     MT  (+/- 3 meters HH1 GPS) 
 JW0671
 JW0671_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3636263782(NAD 83)
 JW0671
 JW0671                          SUPERSEDED SURVEY CONTROL
 JW0671
 JW0671  NGVD 29 (??/??/92)  725.798  (m)         2381.22   (f) ADJ UNCH    1 2
 JW0671
 JW0671.Superseded values are not recommended for survey control.
 JW0671
 JW0671.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0671.See file dsdata.pdf to determine how the superseded data were derived.
 JW0671
 JW0671_MARKER: DB = BENCH MARK DISK
 JW0671_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0671_STAMPING: C 15 1935
 JW0671_MARK LOGO: CGS
 JW0671_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0671+STABILITY: SURFACE MOTION
 JW0671
 JW0671  HISTORY     - Date     Condition        Report By
 JW0671  HISTORY     - 1935     MONUMENTED       CGS
 JW0671  HISTORY     - 1935     GOOD             CGS
 JW0671  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0671  HISTORY     - 20160324 GOOD             INDIV
 JW0671
 JW0671                          STATION DESCRIPTION
 JW0671
 JW0671'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0671'0.6 MI W FROM OAKLAND.
 JW0671'ABOUT 0.6 MILE WEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JW0671'THE CROSSING OF SECOND STREET AT OAKLAND, GARRETT COUNTY, AT A
 JW0671'ROAD CROSSING, 27 FEET EAST OF A CROSSING-WARNING BELL SIGNAL,
 JW0671'24 FEET NORTH OF THE CENTER LINE OF THE NORTH TRACK, 18 FEET
 JW0671'EAST OF THE CENTER LINE OF THE ROAD, AND 3 FEET SOUTH OF A FENCE
 JW0671'CORNER.  A STANDARD DISK, STAMPED C 15 1935 AND SET IN THE TOP
 JW0671'OF A CONCRETE POST.
 JW0671
 JW0671                          STATION RECOVERY (1935)
 JW0671
 JW0671'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JW0671'RECOVERED IN GOOD CONDITION.
 JW0671
 JW0671                          STATION RECOVERY (1983)
 JW0671
 JW0671'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0671'NOT RECOVERED, THE ROAD NO LONGER EXISTS, NO SIGNS OF THE MARK COULD
 JW0671'BE FOUND.
 JW0671
 JW0671                          STATION RECOVERY (2016)
 JW0671
 JW0671'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2016 (MCF)
 JW0671'RECOVERED AS DESCRIBED.  OCCUPIED FOR 4+ HRS, BUT REPORT SHOWS ONLY
 JW0671'TWO HOURS OF DATA RECORDED.  I WILL EMAIL THE REPORT TO MS. BROWN...
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0676 ***********************************************************************
 JV0676  DESIGNATION -  C 16
 JV0676  PID         -  JV0676
 JV0676  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0676  COUNTRY     -  US
 JV0676  USGS QUAD   -  BELTSVILLE (2016)
 JV0676
 JV0676                         *CURRENT SURVEY CONTROL
 JV0676  ______________________________________________________________________
 JV0676* NAD 83(1986) POSITION- 39 02 04.93   (N) 076 54 21.72   (W)   HD_HELD1
 JV0676* NAVD 88 ORTHO HEIGHT -    36.305 (meters)      119.11  (feet) ADJUSTED
 JV0676  ______________________________________________________________________
 JV0676  GEOID HEIGHT    -        -32.163 (meters)                     GEOID18
 JV0676  DYNAMIC HEIGHT  -         36.286 (meters)      119.05  (feet) COMP
 JV0676  MODELED GRAVITY -    980,103.8   (mgal)                       NAVD 88
 JV0676
 JV0676  VERT ORDER      -  FIRST     CLASS I
 JV0676
 JV0676.The horizontal coordinates were determined by differentially corrected
 JV0676.hand held GPS observations or other comparable positioning techniques
 JV0676.and have an estimated accuracy of +/- 3 meters.
 JV0676
 JV0676.The orthometric height was determined by differential leveling and
 JV0676.adjusted by the NATIONAL GEODETIC SURVEY
 JV0676.in June 1991.
 JV0676
 JV0676.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0676.GEOID18 height accuracy estimate available here.
 JV0676
 JV0676.Click photographs - Photos may exist for this station.
 JV0676
 JV0676.The dynamic height is computed by dividing the NAVD 88
 JV0676.geopotential number by the normal gravity value computed on the
 JV0676.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0676.degrees latitude (g = 980.6199 gals.).
 JV0676
 JV0676.The modeled gravity was interpolated from observed gravity values.
 JV0676
 JV0676;                    North         East    Units  Estimated Accuracy
 JV0676;SPC MD       -   151,862.8     408,135.6     MT  (+/- 3 meters HH1 GPS) 
 JV0676
 JV0676_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3502722356(NAD 83)
 JV0676
 JV0676                          SUPERSEDED SURVEY CONTROL
 JV0676
 JV0676  NGVD 29 (11/26/84)   36.532  (m)          119.86   (f) ADJUSTED    1 1
 JV0676
 JV0676.Superseded values are not recommended for survey control.
 JV0676
 JV0676.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0676.See file dsdata.pdf to determine how the superseded data were derived.
 JV0676
 JV0676_MARKER: DB = BENCH MARK DISK
 JV0676_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV0676_SP_SET: BRIDGE PIER
 JV0676_STAMPING: C 16 1951
 JV0676_MARK LOGO: CGS
 JV0676_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0676_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0676_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0676+SATELLITE: SATELLITE OBSERVATIONS - March 05, 2010
 JV0676
 JV0676  HISTORY     - Date     Condition        Report By
 JV0676  HISTORY     - 1951     MONUMENTED       CGS
 JV0676  HISTORY     - 1971     GOOD             NGS
 JV0676  HISTORY     - 19901015 GOOD             NGS
 JV0676  HISTORY     - 20020322 GOOD             MDSHA
 JV0676  HISTORY     - 20100305 GOOD             NGS
 JV0676
 JV0676                          STATION DESCRIPTION
 JV0676
 JV0676'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0676'AT BELTSVILLE.
 JV0676'AT BELTSVILLE, AT THE STATE HIGHWAY 212 OVERPASS FOR THE BALTIMORE
 JV0676'AND OHIO RAILROAD, SET IN THE TOP OF THE NORTH END OF THE
 JV0676'CONCRETE FOUNDATION FOR THE FIRST PIER WEST OF THE TRACKS, 24
 JV0676'FEET WEST OF THE WEST RAIL OF THE WEST TRACK, 3 FEET SOUTH
 JV0676'OF THE NORTH END OF THE FOUNDATION, AND ABOUT 4 FEET ABOVE THE
 JV0676'LEVEL OF THE TRACKS.
 JV0676
 JV0676                          STATION RECOVERY (1990)
 JV0676
 JV0676'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV0676'IN BELTSVILLE, AT THE INTERSECTION OF STATE HIGHWAY 212 AND THE
 JV0676'BALTIMORE AND OHIO RAILROAD, IN TOP OF AND 0.8 M (2.6 FT) SOUTH OF
 JV0676'THE NORTH END OF THE CONCRETE PILE CAP OF THE FIRST PIER EAST OF THE
 JV0676'WEST ABUTMENT OF THE HIGHWAY BRIDGE SPANNING THE RAILROAD, 7.2 M
 JV0676'(23.6 FT) WEST OF THE NEAR RAIL, AND 1.2 M (3.9 FT) ABOVE THE LEVEL
 JV0676'OF THE TRACKS.
 JV0676
 JV0676                          STATION RECOVERY (2002)
 JV0676
 JV0676'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV0676'RECOVERED AS DESCRIBED.
 JV0676
 JV0676                          STATION RECOVERY (2010)
 JV0676
 JV0676'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (D)
 JV0676'MARK HAS BEEN PAINTED OVER AND IS DIFFICULT TO READ.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1140 ***********************************************************************
 JW1140  DESIGNATION -  C 167
 JW1140  PID         -  JW1140
 JW1140  STATE/COUNTY-  MD/GARRETT
 JW1140  COUNTRY     -  US
 JW1140  USGS QUAD   -  OAKLAND (2016)
 JW1140
 JW1140                         *CURRENT SURVEY CONTROL
 JW1140  ______________________________________________________________________
 JW1140* NAD 83(1986) POSITION- 39 24 01.     (N) 079 25 37.     (W)   SCALED
 JW1140* NAVD 88 ORTHO HEIGHT -   749.266 (meters)     2458.22  (feet) ADJUSTED
 JW1140  ______________________________________________________________________
 JW1140  GEOID HEIGHT    -        -31.124 (meters)                     GEOID18
 JW1140  DYNAMIC HEIGHT  -        748.756 (meters)     2456.54  (feet) COMP
 JW1140  MODELED GRAVITY -    979,921.1   (mgal)                       NAVD 88
 JW1140
 JW1140  VERT ORDER      -  FIRST     CLASS II
 JW1140
 JW1140.The horizontal coordinates were scaled from a map and have
 JW1140.an estimated accuracy of +/- 6 seconds.
 JW1140
 JW1140.The orthometric height was determined by differential leveling and
 JW1140.adjusted by the NATIONAL GEODETIC SURVEY
 JW1140.in June 1991.
 JW1140
 JW1140.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1140.GEOID18 height accuracy estimate available here.
 JW1140
 JW1140.Click photographs - Photos may exist for this station.
 JW1140
 JW1140.The dynamic height is computed by dividing the NAVD 88
 JW1140.geopotential number by the normal gravity value computed on the
 JW1140.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1140.degrees latitude (g = 980.6199 gals.).
 JW1140
 JW1140.The modeled gravity was interpolated from observed gravity values.
 JW1140
 JW1140;                    North         East    Units  Estimated Accuracy
 JW1140;SPC MD       -   195,220.      190,980.      MT  (+/- 180 meters Scaled)
 JW1140
 JW1140_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD354623(NAD 83)
 JW1140
 JW1140                          SUPERSEDED SURVEY CONTROL
 JW1140
 JW1140.No superseded survey control is available for this station.
 JW1140
 JW1140_MARKER: DV = VERTICAL CONTROL DISK
 JW1140_SETTING: 66 = SET IN ROCK OUTCROP
 JW1140_STAMPING: C 167 1983
 JW1140_MARK LOGO: NGS
 JW1140_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1140+STABILITY: POSITION/ELEVATION WELL
 JW1140
 JW1140  HISTORY     - Date     Condition        Report By
 JW1140  HISTORY     - 1983     MONUMENTED       NGS
 JW1140
 JW1140                          STATION DESCRIPTION
 JW1140
 JW1140'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1140'2.4 KM (1.5 MI) WEST FROM OAKLAND.
 JW1140'2.4 KM (1.5 MI) WEST ALONG STATE HIGHWAY 39 FROM THE JUNCTION OF U.S.
 JW1140'HIGHWAY 219 IN OAKLAND TO THE MARK ON THE LEFT, IN TOP OF A ROCK
 JW1140'OUTCROP FLUSH WITH THE GROUND, AT A POWER LINE CROSSING THE HIGHWAY,
 JW1140'9.14 METERS (30.0 FT) SOUTHEAST OF THE CENTERLINE OF THE HIGHWAY,
 JW1140'14.93 METERS (49.0 FT) EAST-NORTHEAST OF TELEPHONE POLE 45,
 JW1140'11.27 METERS (37.0 FT) NORTHEAST OF POWER POLE 8-927.
 JW1140'THE MARK IS 0.18 METERS  NW FROM A WITNESS POST.
 JW1140'THE MARK IS 0.30 M BELOW HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1671 ***********************************************************************
 JW1671  DESIGNATION -  C 169 RESET
 JW1671  PID         -  JW1671
 JW1671  STATE/COUNTY-  MD/ALLEGANY
 JW1671  COUNTRY     -  US
 JW1671  USGS QUAD   -  FLINTSTONE (2016)
 JW1671
 JW1671                         *CURRENT SURVEY CONTROL
 JW1671  ______________________________________________________________________
 JW1671* NAD 83(1986) POSITION- 39 41 40.73   (N) 078 31 42.23   (W)   HD_HELD1
 JW1671* NAVD 88 ORTHO HEIGHT -   371.004 (meters)     1217.20  (feet) ADJUSTED
 JW1671  ______________________________________________________________________
 JW1671  GEOID HEIGHT    -        -33.163 (meters)                     GEOID18
 JW1671  DYNAMIC HEIGHT  -        370.788 (meters)     1216.49  (feet) COMP
 JW1671  MODELED GRAVITY -    980,035.6   (mgal)                       NAVD 88
 JW1671
 JW1671  VERT ORDER      -  SECOND    CLASS I
 JW1671
 JW1671.The horizontal coordinates were determined by differentially corrected
 JW1671.hand held GPS observations or other comparable positioning techniques
 JW1671.and have an estimated accuracy of +/- 3 meters.
 JW1671
 JW1671.The orthometric height was determined by differential leveling and
 JW1671.adjusted by the NATIONAL GEODETIC SURVEY
 JW1671.in April 1995.
 JW1671
 JW1671.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1671.GEOID18 height accuracy estimate available here.
 JW1671
 JW1671.Click photographs - Photos may exist for this station.
 JW1671
 JW1671.The dynamic height is computed by dividing the NAVD 88
 JW1671.geopotential number by the normal gravity value computed on the
 JW1671.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1671.degrees latitude (g = 980.6199 gals.).
 JW1671
 JW1671.The modeled gravity was interpolated from observed gravity values.
 JW1671
 JW1671;                    North         East    Units  Estimated Accuracy
 JW1671;SPC MD       -   226,224.1     268,904.1     MT  (+/- 3 meters HH1 GPS) 
 JW1671
 JW1671_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD1192496787(NAD 83)
 JW1671
 JW1671                          SUPERSEDED SURVEY CONTROL
 JW1671
 JW1671.No superseded survey control is available for this station.
 JW1671
 JW1671_MARKER: DV = VERTICAL CONTROL DISK
 JW1671_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW1671_SP_SET: BRIDGE PARAPET WALL
 JW1671_STAMPING: C 169 RESET 1989
 JW1671_MARK LOGO: NGS
 JW1671_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1671_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1671_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW1671+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JW1671
 JW1671  HISTORY     - Date     Condition        Report By
 JW1671  HISTORY     - 1989     MONUMENTED       NGS
 JW1671
 JW1671                          STATION DESCRIPTION
 JW1671
 JW1671'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JW1671'THE MARKER IS LOCATED ABOUT 2.0 MI (3.2 KM) EAST-SOUTHEAST OF
 JW1671'FLINTSTONE, 1.2 MI (1.9 KM) WEST-NORTHWEST OF PRATT AND 8.5 MI (13.7
 JW1671'KM) WEST OF PINEY GROVE.  IT IS ON THE ROAD RIGHT-OF-WAY PROPERTY.
 JW1671'TO REACH FROM THE POST OFFICE AT FLINTSTONE GO EAST ON MARYLAND STATE
 JW1671'HIGHWAY ROUTE 144 FOR 2.5 MI (4.0 KM) TO AN UNNAMED PAVED MACADAM
 JW1671'SERVICE ROAD ON THE LEFT.  TURN LEFT AND GO NORTH ON THE SERVICE ROAD
 JW1671'FOR 100.0 FT (30.5 M) TO THE MARKER ON THE RIGHT IN THE TOP OF A
 JW1671'BRIDGE PARAPET WALL.  THE POINT IS MARKED WITH A STANDARD NATIONAL
 JW1671'GEODETIC SURVEY VERTICAL CONTROL DISK, CEMENTED IN A DRILL HOLE IN
 JW1671'THE TOP OF THE SOUTHEAST END OF EAST PARAPET WALL WHICH IS PART OF
 JW1671'THE ABUTMENT FOR A BRIDGE NUMBERED 1143 WHERE AN UNNAMED SERVICE ROAD
 JW1671'PASSES OVER INTERSTATE HIGHWAY 68.  IT IS 101.0 FT (30.8 M) SOUTH OF
 JW1671'THE CENTERLINE OF THE EASTBOUND LANES OF INTERSTATE HIGHWAY 68, 9.3
 JW1671'FT (2.8 M) EAST OF THE CENTERLINE OF THE SERVICE ROAD, 105.0 FT (32.0
 JW1671'M) NORTH OF THE CENTERLINE OF MARYLAND STATE HIGHWAY ROUTE 144 AND
 JW1671'ABOUT 4.0 FT (1.2 M) HIGHER THAN THE SURFACE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0675 ***********************************************************************
 JW0675  DESIGNATION -  C 17
 JW0675  PID         -  JW0675
 JW0675  STATE/COUNTY-  MD/GARRETT
 JW0675  COUNTRY     -  US
 JW0675  USGS QUAD   -  DEER PARK (2016)
 JW0675
 JW0675                         *CURRENT SURVEY CONTROL
 JW0675  ______________________________________________________________________
 JW0675* NAD 83(1986) POSITION- 39 29 50.05   (N) 079 20 09.02   (W)   HD_HELD1
 JW0675* NAVD 88 ORTHO HEIGHT -   779.573 (meters)     2557.65  (feet) ADJUSTED
 JW0675  ______________________________________________________________________
 JW0675  GEOID HEIGHT    -        -31.233 (meters)                     GEOID18
 JW0675  DYNAMIC HEIGHT  -        779.046 (meters)     2555.92  (feet) COMP
 JW0675  MODELED GRAVITY -    979,924.2   (mgal)                       NAVD 88
 JW0675
 JW0675  VERT ORDER      -  SECOND    CLASS 0
 JW0675
 JW0675.The horizontal coordinates were determined by differentially corrected
 JW0675.hand held GPS observations or other comparable positioning techniques
 JW0675.and have an estimated accuracy of +/- 3 meters.
 JW0675
 JW0675.The orthometric height was determined by differential leveling and
 JW0675.adjusted by the NATIONAL GEODETIC SURVEY
 JW0675.in June 1991.
 JW0675
 JW0675.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0675.GEOID18 height accuracy estimate available here.
 JW0675
 JW0675.Click photographs - Photos may exist for this station.
 JW0675
 JW0675.The dynamic height is computed by dividing the NAVD 88
 JW0675.geopotential number by the normal gravity value computed on the
 JW0675.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0675.degrees latitude (g = 980.6199 gals.).
 JW0675
 JW0675.The modeled gravity was interpolated from observed gravity values.
 JW0675
 JW0675;                    North         East    Units  Estimated Accuracy
 JW0675;SPC MD       -   205,778.5     199,098.7     MT  (+/- 3 meters HH1 GPS) 
 JW0675
 JW0675_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4309273279(NAD 83)
 JW0675
 JW0675                          SUPERSEDED SURVEY CONTROL
 JW0675
 JW0675  NGVD 29 (??/??/92)  779.705  (m)         2558.08   (f) ADJ UNCH    2 0
 JW0675
 JW0675.Superseded values are not recommended for survey control.
 JW0675
 JW0675.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0675.See file dsdata.pdf to determine how the superseded data were derived.
 JW0675
 JW0675_MARKER: DB = BENCH MARK DISK
 JW0675_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0675_STAMPING: C 17 1935
 JW0675_MARK LOGO: CGS
 JW0675_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0675+STABILITY: SURFACE MOTION
 JW0675
 JW0675  HISTORY     - Date     Condition        Report By
 JW0675  HISTORY     - 1935     MONUMENTED       CGS
 JW0675  HISTORY     - 19900928 MARK NOT FOUND   NGS
 JW0675
 JW0675                          STATION DESCRIPTION
 JW0675
 JW0675'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0675'7.4 MI N FROM OAKLAND.
 JW0675'7.4 MILES NORTH ALONG U.S. HIGHWAY 219 FROM THE GARRETT COUNTY
 JW0675'HIGH SCHOOL AT OAKLAND, GARRETT COUNTY, 0.6 MILE SOUTH OF A ROAD
 JW0675'LEADING TO A C.C.C. CAMP, 18 FEET SOUTHEAST OF THE CENTER LINE
 JW0675'OF THE HIGHWAY, 12 FEET NORTHEAST OF THE CENTER LINE OF A ROAD
 JW0675'LEADING TO THE D. DODGE PROPERTY, AND 1-1/2 FEET WEST OF THE WEST
 JW0675'FENCE CORNER.  A STANDARD DISK, STAMPED C 17 1935 AND SET IN THE
 JW0675'TOP OF A CONCRETE POST.
 JW0675
 JW0675                          STATION RECOVERY (1990)
 JW0675
 JW0675'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW0675'THERE HAS BEEN HIGHWAY CONSTRUCTION AT THE DESCRIBED LOCATION AND THE
 JW0675'MARK MAY HAVE BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC9952 ***********************************************************************
 AC9952  DESIGNATION -  C 170
 AC9952  PID         -  AC9952
 AC9952  STATE/COUNTY-  MD/SOMERSET
 AC9952  COUNTRY     -  US
 AC9952  USGS QUAD   -  DEAL ISLAND (2016)
 AC9952
 AC9952                         *CURRENT SURVEY CONTROL
 AC9952  ______________________________________________________________________
 AC9952* NAD 83(2011) POSITION- 38 10 11.83160(N) 075 56 34.45143(W)   ADJUSTED
 AC9952* NAD 83(2011) ELLIP HT-   -32.268 (meters)        (04/11/25)   ADJUSTED
 AC9952* NAD 83(2011) EPOCH   -  2010.00
 AC9952* NAVD 88 ORTHO HEIGHT -     3.513 (meters)       11.53  (feet) ADJUSTED
 AC9952  ______________________________________________________________________
 AC9952  GEOID HEIGHT    -        -35.788 (meters)                     GEOID18
 AC9952  NAD 83(2011) X  -  1,219,487.770 (meters)                     COMP
 AC9952  NAD 83(2011) Y  - -4,870,416.692 (meters)                     COMP
 AC9952  NAD 83(2011) Z  -  3,920,272.195 (meters)                     COMP
 AC9952  LAPLACE CORR    -         -2.43  (seconds)                    DEFLEC18
 AC9952  DYNAMIC HEIGHT  -          3.511 (meters)       11.52  (feet) COMP
 AC9952  MODELED GRAVITY -    979,985.0   (mgal)                       NAVD 88
 AC9952
 AC9952  VERT ORDER      -  SECOND    CLASS I
 AC9952
 AC9952  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC9952  Standards:
 AC9952         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC9952            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC9952  -------------------------------------------------------------------
 AC9952  NETWORK    0.50   1.39           0.21   0.20   0.71      0.02657209
 AC9952  -------------------------------------------------------------------
 AC9952  Click here for local accuracies and other accuracy information.
 AC9952
 AC9952.The horizontal coordinates were established by GPS observations
 AC9952.and adjusted by the MD DEPT OF TRANSP in April 2025.
 AC9952
 AC9952.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC9952.been affixed to the stable North American tectonic plate. See 
 AC9952.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC9952
 AC9952.The horizontal coordinates are valid at the epoch date displayed above
 AC9952.which is a decimal equivalence of Year/Month/Day.
 AC9952
 AC9952.The orthometric height was determined by differential leveling and
 AC9952.adjusted by the NATIONAL GEODETIC SURVEY
 AC9952.in October 1997.
 AC9952
 AC9952.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC9952.GEOID18 height accuracy estimate available here.
 AC9952
 AC9952.Click photographs - Photos may exist for this station.
 AC9952
 AC9952.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC9952
 AC9952.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC9952
 AC9952.The ellipsoidal height was determined by GPS observations
 AC9952.and is referenced to NAD 83.
 AC9952
 AC9952.The dynamic height is computed by dividing the NAVD 88
 AC9952.geopotential number by the normal gravity value computed on the
 AC9952.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC9952.degrees latitude (g = 980.6199 gals.).
 AC9952
 AC9952.The modeled gravity was interpolated from observed gravity values.
 AC9952
 AC9952. The following values were computed from the NAD 83(2011) position.
 AC9952
 AC9952;                    North         East     Units Scale Factor Converg.
 AC9952;SPC MD       -    56,403.705   492,632.992   MT  1.00002517   +0 39 48.5
 AC9952;SPC MD       -   185,051.16  1,616,246.74   sFT  1.00002517   +0 39 48.5
 AC9952;UTM  18      - 4,225,091.976   417,406.148   MT  0.99968401   -0 34 57.9
 AC9952
 AC9952!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC9952!SPC MD       -   1.00000506  x   1.00002517  =   1.00003023
 AC9952!UTM  18      -   1.00000506  x   0.99968401  =   0.99968907
 AC9952
 AC9952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1740625091(NAD 83)
 AC9952
 AC9952                          SUPERSEDED SURVEY CONTROL
 AC9952
 AC9952.No superseded survey control is available for this station.
 AC9952
 AC9952_MARKER: DV = VERTICAL CONTROL DISK
 AC9952_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 AC9952_SP_SET: BRIDGE ABUTMENT
 AC9952_STAMPING: C 170 1987
 AC9952_MARK LOGO: NGS
 AC9952_PROJECTION: FLUSH
 AC9952_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC9952_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AC9952_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC9952+SATELLITE: SATELLITE OBSERVATIONS - January 01, 2019
 AC9952
 AC9952  HISTORY     - Date     Condition        Report By
 AC9952  HISTORY     - 1987     MONUMENTED       NGS
 AC9952  HISTORY     - 20190101 GOOD             ARCSHE
 AC9952
 AC9952                          STATION DESCRIPTION
 AC9952
 AC9952'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 AC9952'FROM THE POST OFFICE IN CHANCE GO SW FOR 70 M (229.7 FT) ON HAINES
 AC9952'POINT ROAD TO A ROAD CROSSING. TURN RIGHT AND GO SW FOR 0.6 KM (0.35
 AC9952'MI) ON STATE HIGHWAY 363 TO THE NE END OF A BRIDGE. THE MARK IS ON THE
 AC9952'RIGHT 5.4 M (17.7 FT) NW FROM THE CENTERLINE OF HIGHWAY 363, 0.7 M
 AC9952'(2.3 FT) NW FROM THE NW SIDE OF PARAPET WALL, 15.8 M (51.8 FT) ENE
 AC9952'FROM POWERLINE POLE NO. 36926-86113, AND 33.2 M (108.9 FT) SSE FROM
 AC9952'POWERLINE POLE NO. 36933-86124.
 AC9952
 AC9952                          STATION RECOVERY (2019)
 AC9952
 AC9952'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 AC9952'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2134 ***********************************************************************
 HU2134  DESIGNATION -  C 171
 HU2134  PID         -  HU2134
 HU2134  STATE/COUNTY-  MD/WICOMICO
 HU2134  COUNTRY     -  US
 HU2134  USGS QUAD   -  SHARPTOWN (2016)
 HU2134
 HU2134                         *CURRENT SURVEY CONTROL
 HU2134  ______________________________________________________________________
 HU2134* NAD 83(1986) POSITION- 38 31 04.3    (N) 075 44 26.6    (W)   HD_HELD2
 HU2134* NAVD 88 ORTHO HEIGHT -     1.612 (meters)        5.29  (feet) ADJUSTED
 HU2134  ______________________________________________________________________
 HU2134  GEOID HEIGHT    -        -35.553 (meters)                     GEOID18
 HU2134  DYNAMIC HEIGHT  -          1.611 (meters)        5.29  (feet) COMP
 HU2134  MODELED GRAVITY -    980,012.1   (mgal)                       NAVD 88
 HU2134
 HU2134  VERT ORDER      -  SECOND    CLASS I
 HU2134
 HU2134.The horizontal coordinates were established by autonomous hand held GPS
 HU2134.observations and have an estimated accuracy of +/- 10 meters.
 HU2134
 HU2134.The orthometric height was determined by differential leveling and
 HU2134.adjusted by the NATIONAL GEODETIC SURVEY
 HU2134.in June 1991.
 HU2134
 HU2134.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2134.GEOID18 height accuracy estimate available here.
 HU2134
 HU2134.Click photographs - Photos may exist for this station.
 HU2134
 HU2134.The dynamic height is computed by dividing the NAVD 88
 HU2134.geopotential number by the normal gravity value computed on the
 HU2134.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2134.degrees latitude (g = 980.6199 gals.).
 HU2134
 HU2134.The modeled gravity was interpolated from observed gravity values.
 HU2134
 HU2134;                    North         East    Units  Estimated Accuracy
 HU2134;SPC MD       -    95,243.      509,816.      MT  (+/- 10 meters HH2 GPS)
 HU2134
 HU2134_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3542663535(NAD 83)
 HU2134
 HU2134                          SUPERSEDED SURVEY CONTROL
 HU2134
 HU2134  NGVD 29 (06/12/91)    1.858  (m)            6.10   (f) ADJUSTED    2 1
 HU2134
 HU2134.Superseded values are not recommended for survey control.
 HU2134
 HU2134.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2134.See file dsdata.pdf to determine how the superseded data were derived.
 HU2134
 HU2134_MARKER: DV = VERTICAL CONTROL DISK
 HU2134_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU2134_SP_SET: HEADWALL
 HU2134_STAMPING: C 171 1989
 HU2134_MARK LOGO: NGS
 HU2134_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2134_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2134+STABILITY: SURFACE MOTION
 HU2134_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2134+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2017
 HU2134
 HU2134  HISTORY     - Date     Condition        Report By
 HU2134  HISTORY     - 1989     MONUMENTED       MDSHA
 HU2134  HISTORY     - 19900306 GOOD             NGS
 HU2134  HISTORY     - 20170329 GOOD             PROFLN
 HU2134
 HU2134                          STATION DESCRIPTION
 HU2134
 HU2134'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2134'3.2 KM (1.99 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 313 FROM THE
 HU2134'JUNCTION OF STATE HIGHWAY 348 IN SHARPTOWN, IN TOP OF AND 1.7 M (5.58
 HU2134'FT) NORTHEAST OF THE SOUTHWEST END OF THE NORTHWEST CONCRETE HEADWALL
 HU2134'OF A BOX CULVERT, 7.2 M (23.62 FT) NORTHWEST OF THE CENTERLINE OF THE
 HU2134'HIGHWAY, AND 0.2 M (0.66 FT) ABOVE THE LEVEL OF THE HIGHWAY.
 HU2134
 HU2134                          STATION RECOVERY (2017)
 HU2134
 HU2134'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2134'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6173 ***********************************************************************
 JV6173  DESIGNATION -  C 172
 JV6173  PID         -  JV6173
 JV6173  STATE/COUNTY-  MD/HARFORD
 JV6173  COUNTRY     -  US
 JV6173  USGS QUAD   -  PHOENIX (2016)
 JV6173
 JV6173                         *CURRENT SURVEY CONTROL
 JV6173  ______________________________________________________________________
 JV6173* NAD 83(1986) POSITION- 39 35 30.     (N) 076 30 36.     (W)   SCALED
 JV6173* NAVD 88 ORTHO HEIGHT -   187.527 (meters)      615.24  (feet) ADJUSTED
 JV6173  ______________________________________________________________________
 JV6173  GEOID HEIGHT    -        -32.485 (meters)                     GEOID18
 JV6173  DYNAMIC HEIGHT  -        187.431 (meters)      614.93  (feet) COMP
 JV6173  MODELED GRAVITY -    980,111.2   (mgal)                       NAVD 88
 JV6173
 JV6173  VERT ORDER      -  FIRST     CLASS II
 JV6173
 JV6173.The horizontal coordinates were scaled from a map and have
 JV6173.an estimated accuracy of +/- 6 seconds.
 JV6173
 JV6173.The orthometric height was determined by differential leveling and
 JV6173.adjusted by the NATIONAL GEODETIC SURVEY
 JV6173.in June 1991.
 JV6173
 JV6173.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6173.GEOID18 height accuracy estimate available here.
 JV6173
 JV6173.Click photographs - Photos may exist for this station.
 JV6173
 JV6173.The dynamic height is computed by dividing the NAVD 88
 JV6173.geopotential number by the normal gravity value computed on the
 JV6173.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6173.degrees latitude (g = 980.6199 gals.).
 JV6173
 JV6173.The modeled gravity was interpolated from observed gravity values.
 JV6173
 JV6173;                    North         East    Units  Estimated Accuracy
 JV6173;SPC MD       -   213,810.      442,090.      MT  (+/- 180 meters Scaled)
 JV6173
 JV6173_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ703835(NAD 83)
 JV6173
 JV6173                          SUPERSEDED SURVEY CONTROL
 JV6173
 JV6173.No superseded survey control is available for this station.
 JV6173
 JV6173_MARKER: I = METAL ROD
 JV6173_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6173_STAMPING: C 172 1989
 JV6173_MARK LOGO: NGS
 JV6173_PROJECTION: FLUSH
 JV6173_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6173_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6173_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6173+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6173_ROD/PIPE-DEPTH: 7.0 meters
 JV6173
 JV6173  HISTORY     - Date     Condition        Report By
 JV6173  HISTORY     - 1989     MONUMENTED       NGS
 JV6173  HISTORY     - 20041009 GOOD             GEOCAC
 JV6173
 JV6173                          STATION DESCRIPTION
 JV6173
 JV6173'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6173'2.5 KM (1.55 MI) SOUTHERLY ALONG STATE HIGHWAY 146 FROM ITS JUNCTION
 JV6173'WITH STATE HIGHWAY 23 IN MADONNA, 10.1 M (33.1 FT) SOUTHWEST OF THE
 JV6173'EXTENDED CENTER OF STATE HIGHWAY 152, 7.5 M (24.6 FT) NORTH OF THE
 JV6173'CENTER OF A DRIVEWAY, 6.5 M (21.3 FT) WEST OF THE CENTERLINE OF THE
 JV6173'HIGHWAY, 0.7 M (2.3 FT) NORTH OF UTILITY POLE NUMBER 375899 AND A
 JV6173'WITNESS POST, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO DATUM
 JV6173'POINT IS HAD THROUGH A 5-INCH LOGO CAP.
 JV6173
 JV6173                          STATION RECOVERY (2004)
 JV6173
 JV6173'RECOVERY NOTE BY GEOCACHING 2004 (MFL)
 JV6173'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6200 ***********************************************************************
 JV6200  DESIGNATION -  C 173
 JV6200  PID         -  JV6200
 JV6200  STATE/COUNTY-  MD/HARFORD
 JV6200  COUNTRY     -  US
 JV6200  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6200
 JV6200                         *CURRENT SURVEY CONTROL
 JV6200  ______________________________________________________________________
 JV6200* NAD 83(1986) POSITION- 39 36 22.     (N) 076 23 50.     (W)   SCALED
 JV6200* NAVD 88 ORTHO HEIGHT -   110.920 (meters)      363.91  (feet) ADJUSTED
 JV6200  ______________________________________________________________________
 JV6200  GEOID HEIGHT    -        -32.650 (meters)                     GEOID18
 JV6200  DYNAMIC HEIGHT  -        110.863 (meters)      363.72  (feet) COMP
 JV6200  MODELED GRAVITY -    980,111.8   (mgal)                       NAVD 88
 JV6200
 JV6200  VERT ORDER      -  FIRST     CLASS II
 JV6200
 JV6200.The horizontal coordinates were scaled from a map and have
 JV6200.an estimated accuracy of +/- 6 seconds.
 JV6200
 JV6200.The orthometric height was determined by differential leveling and
 JV6200.adjusted by the NATIONAL GEODETIC SURVEY
 JV6200.in June 1991.
 JV6200
 JV6200.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6200.GEOID18 height accuracy estimate available here.
 JV6200
 JV6200.Click photographs - Photos may exist for this station.
 JV6200
 JV6200.The dynamic height is computed by dividing the NAVD 88
 JV6200.geopotential number by the normal gravity value computed on the
 JV6200.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6200.degrees latitude (g = 980.6199 gals.).
 JV6200
 JV6200.The modeled gravity was interpolated from observed gravity values.
 JV6200
 JV6200;                    North         East    Units  Estimated Accuracy
 JV6200;SPC MD       -   215,470.      451,770.      MT  (+/- 180 meters Scaled)
 JV6200
 JV6200_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ800849(NAD 83)
 JV6200
 JV6200                          SUPERSEDED SURVEY CONTROL
 JV6200
 JV6200.No superseded survey control is available for this station.
 JV6200
 JV6200_MARKER: I = METAL ROD
 JV6200_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6200_STAMPING: C 173 1989
 JV6200_MARK LOGO: NGS
 JV6200_PROJECTION: FLUSH
 JV6200_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6200_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6200_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6200+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6200_ROD/PIPE-DEPTH: 6.7 meters
 JV6200
 JV6200  HISTORY     - Date     Condition        Report By
 JV6200  HISTORY     - 1989     MONUMENTED       NGS
 JV6200
 JV6200                          STATION DESCRIPTION
 JV6200
 JV6200'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6200'3.6 KM (2.25 MI) NORTHERLY ALONG STATE HIGHWAY 24 FROM THE JUNCTION
 JV6200'OF STATE HIGHWAY 23 IN FOREST HILL, 13.5 M (44.3 FT) SOUTHWEST OF THE
 JV6200'CENTER OF STONE HAVEN DRIVE, 5.9 M (19.4 FT) NORTHWEST OF THE
 JV6200'CENTERLINE OF THE HIGHWAY, 0.5 M (1.6 FT) SOUTHWEST OF A WITNESS POST
 JV6200'AND UTILITY POLE NUMBER 343444 WITH ONE GUY WIRE, 0.5 M (1.6 FT)
 JV6200'NORTHWEST OF A CURB, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO THE
 JV6200'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6181 ***********************************************************************
 JV6181  DESIGNATION -  C 174
 JV6181  PID         -  JV6181
 JV6181  STATE/COUNTY-  MD/HARFORD
 JV6181  COUNTRY     -  US
 JV6181  USGS QUAD   -  NORRISVILLE (2016)
 JV6181
 JV6181                         *CURRENT SURVEY CONTROL
 JV6181  ______________________________________________________________________
 JV6181* NAD 83(1986) POSITION- 39 42 14.0    (N) 076 31 04.6    (W)   HD_HELD2
 JV6181* NAVD 88 ORTHO HEIGHT -   196.750 (meters)      645.50  (feet) ADJUSTED
 JV6181  ______________________________________________________________________
 JV6181  GEOID HEIGHT    -        -32.493 (meters)                     GEOID18
 JV6181  DYNAMIC HEIGHT  -        196.652 (meters)      645.18  (feet) COMP
 JV6181  MODELED GRAVITY -    980,121.1   (mgal)                       NAVD 88
 JV6181
 JV6181  VERT ORDER      -  FIRST     CLASS II
 JV6181
 JV6181.The horizontal coordinates were established by autonomous hand held GPS
 JV6181.observations and have an estimated accuracy of +/- 10 meters.
 JV6181
 JV6181.The orthometric height was determined by differential leveling and
 JV6181.adjusted by the NATIONAL GEODETIC SURVEY
 JV6181.in June 1991.
 JV6181
 JV6181.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6181.GEOID18 height accuracy estimate available here.
 JV6181
 JV6181.Click photographs - Photos may exist for this station.
 JV6181
 JV6181.The dynamic height is computed by dividing the NAVD 88
 JV6181.geopotential number by the normal gravity value computed on the
 JV6181.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6181.degrees latitude (g = 980.6199 gals.).
 JV6181
 JV6181.The modeled gravity was interpolated from observed gravity values.
 JV6181
 JV6181;                    North         East    Units  Estimated Accuracy
 JV6181;SPC MD       -   226,262.      441,344.      MT  (+/- 10 meters HH2 GPS)
 JV6181
 JV6181_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6986795993(NAD 83)
 JV6181
 JV6181                          SUPERSEDED SURVEY CONTROL
 JV6181
 JV6181.No superseded survey control is available for this station.
 JV6181
 JV6181_MARKER: I = METAL ROD
 JV6181_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6181_STAMPING: C 174 1989
 JV6181_MARK LOGO: NGS
 JV6181_PROJECTION: FLUSH
 JV6181_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6181_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6181_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6181+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6181_ROD/PIPE-DEPTH: 5.8 meters
 JV6181
 JV6181  HISTORY     - Date     Condition        Report By
 JV6181  HISTORY     - 1989     MONUMENTED       NGS
 JV6181  HISTORY     - 20041108 POOR             GEOCAC
 JV6181
 JV6181                          STATION DESCRIPTION
 JV6181
 JV6181'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6181'3.4 KM (2.10 MI) SOUTHERLY ALONG STATE HIGHWAY 124 AND STATE HIGHWAY
 JV6181'163 FROM THE JUNCTION OF STATE HIGHWAY 851 IN FAWN GROVE,
 JV6181'PENNSYLVANIA, THENCE 5.8 KM (3.60 MI) WESTERLY ALONG STATE HIGHWAY
 JV6181'136, 146.8 M (481.6 FT) EAST OF THE CENTER OF BROADWAY ROAD, 6.0 M
 JV6181'(19.7 FT) NORTH OF THE CENTERLINE OF THE HIGHWAY, 0.5 M (1.6 FT) EAST
 JV6181'OF A UTILITY POLE, 0.3 M (1.0 FT) SOUTH OF A WITNESS POST, AND 0.2 M
 JV6181'(0.7 FT) BELOW THE LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO THE DATUM
 JV6181'POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6181
 JV6181                          STATION RECOVERY (2004)
 JV6181
 JV6181'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6181'THE MARK APPEARS TO HAVE BEEN DISTURBED BY HEAVY EQUIPMENT.  THE LOGO
 JV6181'CAP UNDER WHICH THIS ROD IS MOUNTED TILTS NOTICABLY TO THE SOUTH, AND
 JV6181'THE ROD IS NOT CENTERED UNDER THE LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2421 ***********************************************************************
 HU2421  DESIGNATION -  C 175
 HU2421  PID         -  HU2421
 HU2421  STATE/COUNTY-  MD/WICOMICO
 HU2421  COUNTRY     -  US
 HU2421  USGS QUAD   -  WANGO (2016)
 HU2421
 HU2421                         *CURRENT SURVEY CONTROL
 HU2421  ______________________________________________________________________
 HU2421* NAD 83(1986) POSITION- 38 20 33.     (N) 075 28 05.     (W)   SCALED
 HU2421* NAVD 88 ORTHO HEIGHT -    14.263 (meters)       46.79  (feet) ADJUSTED
 HU2421  ______________________________________________________________________
 HU2421  GEOID HEIGHT    -        -35.936 (meters)                     GEOID18
 HU2421  DYNAMIC HEIGHT  -         14.254 (meters)       46.77  (feet) COMP
 HU2421  MODELED GRAVITY -    980,002.7   (mgal)                       NAVD 88
 HU2421
 HU2421  VERT ORDER      -  SECOND    CLASS I
 HU2421
 HU2421.The horizontal coordinates were scaled from a map and have
 HU2421.an estimated accuracy of +/- 6 seconds.
 HU2421
 HU2421.The orthometric height was determined by differential leveling and
 HU2421.adjusted by the NATIONAL GEODETIC SURVEY
 HU2421.in June 1991.
 HU2421
 HU2421.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2421.GEOID18 height accuracy estimate available here.
 HU2421
 HU2421.Click photographs - Photos may exist for this station.
 HU2421
 HU2421.The dynamic height is computed by dividing the NAVD 88
 HU2421.geopotential number by the normal gravity value computed on the
 HU2421.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2421.degrees latitude (g = 980.6199 gals.).
 HU2421
 HU2421.The modeled gravity was interpolated from observed gravity values.
 HU2421
 HU2421;                    North         East    Units  Estimated Accuracy
 HU2421;SPC MD       -    76,140.      533,920.      MT  (+/- 180 meters Scaled)
 HU2421
 HU2421_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH590439(NAD 83)
 HU2421
 HU2421                          SUPERSEDED SURVEY CONTROL
 HU2421
 HU2421  NGVD 29 (06/12/91)   14.508  (m)           47.60   (f) ADJUSTED    2 1
 HU2421
 HU2421.Superseded values are not recommended for survey control.
 HU2421
 HU2421.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2421.See file dsdata.pdf to determine how the superseded data were derived.
 HU2421
 HU2421_MARKER: I = METAL ROD
 HU2421_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2421_STAMPING: C 175 1990
 HU2421_MARK LOGO: NGS
 HU2421_PROJECTION: RECESSED 1 CENTIMETERS
 HU2421_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2421_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2421_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2421+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2421_ROD/PIPE-DEPTH: 20.7 meters
 HU2421_SLEEVE-DEPTH  : 0.9 meters
 HU2421
 HU2421  HISTORY     - Date     Condition        Report By
 HU2421  HISTORY     - 1990     MONUMENTED       NGS
 HU2421
 HU2421                          STATION DESCRIPTION
 HU2421
 HU2421'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2421'8.3 KM (5.16 MI) WESTERLY ALONG STATE HIGHWAY 350 (MOUNT HERMON ROAD)
 HU2421'FROM THE JUNCTION OF STATE HIGHWAY 354 (WILLARDS WHITON ROAD) IN
 HU2421'POWELLVILLE, 16.4 M (53.81 FT) EAST OF THE CENTER OF A DRIVEWAY, 11.0
 HU2421'M (36.09 FT) NORTH OF AND LEVEL WITH THE HIGHWAY CENTERLINE, 9.0 M
 HU2421'(29.53 FT) WEST OF THE CENTER OF FOREST GROVE ROAD, AND 3.0 M
 HU2421'(9.84 FT) SOUTH OF UTILITY POLE NUMBER 50618 92301.  NOTE--ACCESS TO
 HU2421'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2421'PROPERTY OWNED BY MARY WILLEY, RT 1 BOX 75, PARSONSBURG, MD 21849,
 HU2421'TELEPHONE NUMBER (301) 742-3967.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2311 ***********************************************************************
 HU2311  DESIGNATION -  C 176
 HU2311  PID         -  HU2311
 HU2311  STATE/COUNTY-  MD/WICOMICO
 HU2311  COUNTRY     -  US
 HU2311  USGS QUAD   -  HEBRON (2016)
 HU2311
 HU2311                         *CURRENT SURVEY CONTROL
 HU2311  ______________________________________________________________________
 HU2311* NAD 83(1986) POSITION- 38 25 40.     (N) 075 38 22.     (W)   SCALED
 HU2311* NAVD 88 ORTHO HEIGHT -    13.818 (meters)       45.33  (feet) ADJUSTED
 HU2311  ______________________________________________________________________
 HU2311  GEOID HEIGHT    -        -35.715 (meters)                     GEOID18
 HU2311  DYNAMIC HEIGHT  -         13.809 (meters)       45.31  (feet) COMP
 HU2311  MODELED GRAVITY -    980,011.1   (mgal)                       NAVD 88
 HU2311
 HU2311  VERT ORDER      -  SECOND    CLASS I
 HU2311
 HU2311.The horizontal coordinates were scaled from a map and have
 HU2311.an estimated accuracy of +/- 6 seconds.
 HU2311
 HU2311.The orthometric height was determined by differential leveling and
 HU2311.adjusted by the NATIONAL GEODETIC SURVEY
 HU2311.in June 1991.
 HU2311
 HU2311.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2311.GEOID18 height accuracy estimate available here.
 HU2311
 HU2311.Click photographs - Photos may exist for this station.
 HU2311
 HU2311.The dynamic height is computed by dividing the NAVD 88
 HU2311.geopotential number by the normal gravity value computed on the
 HU2311.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2311.degrees latitude (g = 980.6199 gals.).
 HU2311
 HU2311.The modeled gravity was interpolated from observed gravity values.
 HU2311
 HU2311;                    North         East    Units  Estimated Accuracy
 HU2311;SPC MD       -    85,370.      518,800.      MT  (+/- 180 meters Scaled)
 HU2311
 HU2311_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH441534(NAD 83)
 HU2311
 HU2311                          SUPERSEDED SURVEY CONTROL
 HU2311
 HU2311  NGVD 29 (06/12/91)   14.065  (m)           46.14   (f) ADJUSTED    2 1
 HU2311
 HU2311.Superseded values are not recommended for survey control.
 HU2311
 HU2311.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2311.See file dsdata.pdf to determine how the superseded data were derived.
 HU2311
 HU2311_MARKER: I = METAL ROD
 HU2311_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2311_STAMPING: C 176 1990
 HU2311_MARK LOGO: NGS
 HU2311_PROJECTION: RECESSED 2 CENTIMETERS
 HU2311_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2311_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2311_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2311+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2311_ROD/PIPE-DEPTH: 32.9 meters
 HU2311_SLEEVE-DEPTH  : 0.9 meters
 HU2311
 HU2311  HISTORY     - Date     Condition        Report By
 HU2311  HISTORY     - 1990     MONUMENTED       NGS
 HU2311
 HU2311                          STATION DESCRIPTION
 HU2311
 HU2311'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2311'0.2 KM (0.12 MI) WESTERLY ALONG NAYLOR MILL ROAD FROM THE JUNCTION OF
 HU2311'JERSEY ROAD IN SALISBURY, THENCE 4.9 KM (3.04 MI) NORTHWESTERLY ALONG
 HU2311'LOG CABIN ROAD, 0.2 KM (0.12 MI) EAST OF THE INTERSECTION OF WHITE
 HU2311'LOWE ROAD, 25.7 M (84.32 FT) NORTHWEST OF THE NORTHWEST CORNER OF A
 HU2311'HOUSE, 8.9 M (29.20 FT) WEST OF THE CENTER OF A DRIVEWAY, 8.5 M
 HU2311'(27.89 FT) SOUTH OF THE CENTER OF THE ROAD, 1.8 M (5.91 FT) WEST OF A
 HU2311'UTILITY POLE, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DATUM
 HU2311'POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY
 HU2311'OWNED BY IRMA TAYLOR, RT 10 BOX 18, LOG CABIN ROAD, SALISBURY, MD
 HU2311'21801, TELEPHONE NUMBER (301) 742-0890.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6216 ***********************************************************************
 JV6216  DESIGNATION -  C 177
 JV6216  PID         -  JV6216
 JV6216  STATE/COUNTY-  MD/HARFORD
 JV6216  COUNTRY     -  US
 JV6216  USGS QUAD   -  DELTA (2019)
 JV6216
 JV6216                         *CURRENT SURVEY CONTROL
 JV6216  ______________________________________________________________________
 JV6216* NAD 83(1986) POSITION- 39 37 38.     (N) 076 17 11.     (W)   SCALED
 JV6216* NAVD 88 ORTHO HEIGHT -    98.268 (meters)      322.40  (feet) ADJUSTED
 JV6216  ______________________________________________________________________
 JV6216  GEOID HEIGHT    -        -32.777 (meters)                     GEOID18
 JV6216  DYNAMIC HEIGHT  -         98.219 (meters)      322.24  (feet) COMP
 JV6216  MODELED GRAVITY -    980,128.0   (mgal)                       NAVD 88
 JV6216
 JV6216  VERT ORDER      -  FIRST     CLASS II
 JV6216
 JV6216.The horizontal coordinates were scaled from a map and have
 JV6216.an estimated accuracy of +/- 6 seconds.
 JV6216
 JV6216.The orthometric height was determined by differential leveling and
 JV6216.adjusted by the NATIONAL GEODETIC SURVEY
 JV6216.in June 1991.
 JV6216
 JV6216.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6216.GEOID18 height accuracy estimate available here.
 JV6216
 JV6216.Click photographs - Photos may exist for this station.
 JV6216
 JV6216.The dynamic height is computed by dividing the NAVD 88
 JV6216.geopotential number by the normal gravity value computed on the
 JV6216.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6216.degrees latitude (g = 980.6199 gals.).
 JV6216
 JV6216.The modeled gravity was interpolated from observed gravity values.
 JV6216
 JV6216;                    North         East    Units  Estimated Accuracy
 JV6216;SPC MD       -   217,880.      461,270.      MT  (+/- 180 meters Scaled)
 JV6216
 JV6216_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ895871(NAD 83)
 JV6216
 JV6216                          SUPERSEDED SURVEY CONTROL
 JV6216
 JV6216.No superseded survey control is available for this station.
 JV6216
 JV6216_MARKER: I = METAL ROD
 JV6216_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6216_STAMPING: C 177 1989
 JV6216_MARK LOGO: NGS
 JV6216_PROJECTION: FLUSH
 JV6216_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6216_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6216_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6216+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6216_ROD/PIPE-DEPTH: 4.8 meters
 JV6216
 JV6216  HISTORY     - Date     Condition        Report By
 JV6216  HISTORY     - 1989     MONUMENTED       NGS
 JV6216  HISTORY     - 19980711 GOOD             USPSQD
 JV6216
 JV6216                          STATION DESCRIPTION
 JV6216
 JV6216'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6216'1.6 KM (1.00 MI) SOUTHERLY ALONG STATE HIGHWAY 136 FROM THE JUNCTION
 JV6216'OF STATE HIGHWAY 440 IN DUBLIN, THENCE 2.0 KM (1.25 MI) SOUTHWESTERLY
 JV6216'ALONG U.S. HIGHWAY 1, 13.0 M (42.7 FT) EAST OF THE WEST END OF A
 JV6216'FENCE, 10.1 M (33.1 FT) SOUTH OF THE SOUTHWEST CORNER OF A MOBILE
 JV6216'HOME, 9.8 M (32.2 FT) NORTH OF THE CENTERLINE OF THE HIGHWAY, 9.7 M
 JV6216'(31.8 FT) WEST OF THE EAST END OF A FENCE, 0.3 M (1.0 FT) SOUTH OF A
 JV6216'WITNESS POST AND FENCE, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO
 JV6216'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6216
 JV6216                          STATION RECOVERY (1998)
 JV6216
 JV6216'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6216'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2491 ***********************************************************************
 HU2491  DESIGNATION -  C 178
 HU2491  PID         -  HU2491
 HU2491  STATE/COUNTY-  MD/WICOMICO
 HU2491  COUNTRY     -  US
 HU2491  USGS QUAD   -  EDEN (2016)
 HU2491
 HU2491                         *CURRENT SURVEY CONTROL
 HU2491  ______________________________________________________________________
 HU2491* NAD 83(1986) POSITION- 38 20 05.     (N) 075 40 58.     (W)   SCALED
 HU2491* NAVD 88 ORTHO HEIGHT -     3.360 (meters)       11.02  (feet) ADJUSTED
 HU2491  ______________________________________________________________________
 HU2491  GEOID HEIGHT    -        -35.812 (meters)                     GEOID18
 HU2491  DYNAMIC HEIGHT  -          3.358 (meters)       11.02  (feet) COMP
 HU2491  MODELED GRAVITY -    980,002.4   (mgal)                       NAVD 88
 HU2491
 HU2491  VERT ORDER      -  SECOND    CLASS I
 HU2491
 HU2491.The horizontal coordinates were scaled from a map and have
 HU2491.an estimated accuracy of +/- 6 seconds.
 HU2491
 HU2491.The orthometric height was determined by differential leveling and
 HU2491.adjusted by the NATIONAL GEODETIC SURVEY
 HU2491.in June 1991.
 HU2491
 HU2491.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2491.GEOID18 height accuracy estimate available here.
 HU2491
 HU2491.Click photographs - Photos may exist for this station.
 HU2491
 HU2491.The dynamic height is computed by dividing the NAVD 88
 HU2491.geopotential number by the normal gravity value computed on the
 HU2491.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2491.degrees latitude (g = 980.6199 gals.).
 HU2491
 HU2491.The modeled gravity was interpolated from observed gravity values.
 HU2491
 HU2491;                    North         East    Units  Estimated Accuracy
 HU2491;SPC MD       -    74,990.      515,160.      MT  (+/- 180 meters Scaled)
 HU2491
 HU2491_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH403431(NAD 83)
 HU2491
 HU2491                          SUPERSEDED SURVEY CONTROL
 HU2491
 HU2491  NGVD 29 (06/12/91)    3.615  (m)           11.86   (f) ADJUSTED    2 1
 HU2491
 HU2491.Superseded values are not recommended for survey control.
 HU2491
 HU2491.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2491.See file dsdata.pdf to determine how the superseded data were derived.
 HU2491
 HU2491_MARKER: I = METAL ROD
 HU2491_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2491_STAMPING: C 178 1990
 HU2491_MARK LOGO: NGS
 HU2491_PROJECTION: FLUSH
 HU2491_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2491_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2491_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2491+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2491_ROD/PIPE-DEPTH: 18.2 meters
 HU2491_SLEEVE-DEPTH  : 0.9 meters
 HU2491
 HU2491  HISTORY     - Date     Condition        Report By
 HU2491  HISTORY     - 1990     MONUMENTED       NGS
 HU2491
 HU2491                          STATION DESCRIPTION
 HU2491
 HU2491'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2491'2.1 KM (1.30 MI) NORTHWESTERLY ALONG SHARPS POINT ROAD FROM THE
 HU2491'JUNCTION OF CAMDEN AVENUE IN FRUITLAND, THENCE 3.5 KM (2.17 MI)
 HU2491'WESTERLY ALONG RIVERSIDE DRIVE, 17.2 M (56.43 FT) NORTHEAST OF THE
 HU2491'NORTHWEST CORNER OF A HOUSE, 6.8 M (22.31 FT) SOUTH-SOUTHWEST OF THE
 HU2491'CENTERLINE OF THE ROAD, 6.1 M (20.01 FT) EAST-SOUTHEAST OF THE CENTER
 HU2491'OF A DRIVEWAY, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DATUM
 HU2491'POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY
 HU2491'OWNED BY NORRIS TOWNSEND, RT 1 BOX 244 RIVERSIDE DRIVE, SALISBURY, MD
 HU2491'21801, TELEPHONE NUMBER (301) 742-1921.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2223 ***********************************************************************
 HU2223  DESIGNATION -  C 179
 HU2223  PID         -  HU2223
 HU2223  STATE/COUNTY-  MD/WICOMICO
 HU2223  COUNTRY     -  US
 HU2223  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2223
 HU2223                         *CURRENT SURVEY CONTROL
 HU2223  ______________________________________________________________________
 HU2223* NAD 83(1986) POSITION- 38 24 50.8    (N) 075 45 33.7    (W)   HD_HELD2
 HU2223* NAVD 88 ORTHO HEIGHT -     4.742 (meters)       15.56  (feet) ADJUSTED
 HU2223  ______________________________________________________________________
 HU2223  GEOID HEIGHT    -        -35.631 (meters)                     GEOID18
 HU2223  DYNAMIC HEIGHT  -          4.739 (meters)       15.55  (feet) COMP
 HU2223  MODELED GRAVITY -    980,012.1   (mgal)                       NAVD 88
 HU2223
 HU2223  VERT ORDER      -  SECOND    CLASS I
 HU2223
 HU2223.The horizontal coordinates were established by autonomous hand held GPS
 HU2223.observations and have an estimated accuracy of +/- 10 meters.
 HU2223
 HU2223.The orthometric height was determined by differential leveling and
 HU2223.adjusted by the NATIONAL GEODETIC SURVEY
 HU2223.in June 1991.
 HU2223
 HU2223.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2223.GEOID18 height accuracy estimate available here.
 HU2223
 HU2223.Click photographs - Photos may exist for this station.
 HU2223
 HU2223.The dynamic height is computed by dividing the NAVD 88
 HU2223.geopotential number by the normal gravity value computed on the
 HU2223.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2223.degrees latitude (g = 980.6199 gals.).
 HU2223
 HU2223.The modeled gravity was interpolated from observed gravity values.
 HU2223
 HU2223;                    North         East    Units  Estimated Accuracy
 HU2223;SPC MD       -    83,706.      508,347.      MT  (+/- 10 meters HH2 GPS)
 HU2223
 HU2223_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3370652036(NAD 83)
 HU2223
 HU2223                          SUPERSEDED SURVEY CONTROL
 HU2223
 HU2223  NGVD 29 (06/12/91)    4.989  (m)           16.37   (f) ADJUSTED    2 1
 HU2223
 HU2223.Superseded values are not recommended for survey control.
 HU2223
 HU2223.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2223.See file dsdata.pdf to determine how the superseded data were derived.
 HU2223
 HU2223_MARKER: F = FLANGE-ENCASED ROD
 HU2223_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2223_STAMPING: C 179 1990
 HU2223_MARK LOGO: NGS
 HU2223_PROJECTION: RECESSED 8 CENTIMETERS
 HU2223_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2223_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2223_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2223+SATELLITE: SATELLITE OBSERVATIONS - June 07, 2017
 HU2223_ROD/PIPE-DEPTH: 11.4 meters
 HU2223_SLEEVE-DEPTH  : 0.9 meters
 HU2223
 HU2223  HISTORY     - Date     Condition        Report By
 HU2223  HISTORY     - 1990     MONUMENTED       NGS
 HU2223  HISTORY     - 20170607 GOOD             ARCSHE
 HU2223
 HU2223                          STATION DESCRIPTION
 HU2223
 HU2223'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2223'0.9 KM (0.56 MI) SOUTHEASTERLY ALONG BRIDGE STREET FROM THE POST
 HU2223'OFFICE IN MARDELA SPRINGS, THENCE 0.5 KM (0.31 MI) SOUTHWESTERLY
 HU2223'ALONG ATHOL ROAD, THENCE 2.8 KM (1.74 MI) SOUTHEASTERLY ALONG MILL
 HU2223'BRANCH ROAD, THENCE 1.6 KM (0.99 MI) SOUTHWESTERLY ALONG RIGGIN ROAD,
 HU2223'THENCE 1.3 KM (0.81 MI) SOUTHWESTERLY ALONG PORTER MILL ROAD, 33.7 M
 HU2223'(110.56 FT) SOUTHEAST OF THE CENTER OF THE ROAD, 17.5 M (57.41 FT)
 HU2223'NORTHEAST OF THE CENTER OF ATHOL ROAD, 1.5 M (4.92 FT) SOUTH OF
 HU2223'UTILITY POLE NUMBER YS 46 WITH 2 GUY WIRES, 0.9 M (2.95 FT) EAST OF A
 HU2223'WITNESS POST, AND LEVEL WITH ATHOL ROAD.  NOTE--ACCESS TO THE DATUM
 HU2223'POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2223
 HU2223                          STATION RECOVERY (2017)
 HU2223
 HU2223'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2223'THE MARK IS 6 FT (1.8 M) SOUTHEAST OF A WITNESS POST NEXT TO POLE 712
 HU2223'46, ABOUT UNDER OVERHEAD WIRES RUNNING SOUTHEAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1524 ***********************************************************************
 HV1524  DESIGNATION -  C 18
 HV1524  PID         -  HV1524
 HV1524  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1524  COUNTRY     -  US
 HV1524  USGS QUAD   -  SOUTH RIVER (2016)
 HV1524
 HV1524                         *CURRENT SURVEY CONTROL
 HV1524  ______________________________________________________________________
 HV1524* NAD 83(1986) POSITION- 38 55 28.     (N) 076 34 07.     (W)   SCALED
 HV1524* NAVD 88 ORTHO HEIGHT -    17.858 (meters)       58.59  (feet) ADJUSTED
 HV1524  ______________________________________________________________________
 HV1524  GEOID HEIGHT    -        -33.256 (meters)                     GEOID18
 HV1524  DYNAMIC HEIGHT  -         17.848 (meters)       58.56  (feet) COMP
 HV1524  MODELED GRAVITY -    980,066.6   (mgal)                       NAVD 88
 HV1524
 HV1524  VERT ORDER      -  SECOND    CLASS 0
 HV1524
 HV1524.The horizontal coordinates were scaled from a map and have
 HV1524.an estimated accuracy of +/- 6 seconds.
 HV1524
 HV1524.The orthometric height was determined by differential leveling and
 HV1524.adjusted by the NATIONAL GEODETIC SURVEY
 HV1524.in June 1991.
 HV1524
 HV1524.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1524.GEOID18 height accuracy estimate available here.
 HV1524
 HV1524.Click photographs - Photos may exist for this station.
 HV1524
 HV1524.The dynamic height is computed by dividing the NAVD 88
 HV1524.geopotential number by the normal gravity value computed on the
 HV1524.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1524.degrees latitude (g = 980.6199 gals.).
 HV1524
 HV1524.The modeled gravity was interpolated from observed gravity values.
 HV1524
 HV1524;                    North         East    Units  Estimated Accuracy
 HV1524;SPC MD       -   139,710.      437,410.      MT  (+/- 180 meters Scaled)
 HV1524
 HV1524_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ640095(NAD 83)
 HV1524
 HV1524                          SUPERSEDED SURVEY CONTROL
 HV1524
 HV1524  NGVD 29 (11/26/84)   18.095  (m)           59.37   (f) ADJUSTED    2 0
 HV1524
 HV1524.Superseded values are not recommended for survey control.
 HV1524
 HV1524.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1524.See file dsdata.pdf to determine how the superseded data were derived.
 HV1524
 HV1524_MARKER: DB = BENCH MARK DISK
 HV1524_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV1524_SP_SET: CULVERT
 HV1524_STAMPING: C 18 1935
 HV1524_MARK LOGO: CGS
 HV1524_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1524
 HV1524  HISTORY     - Date     Condition        Report By
 HV1524  HISTORY     - 1935     MONUMENTED       CGS
 HV1524
 HV1524                          STATION DESCRIPTION
 HV1524
 HV1524'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HV1524'6.8 MI S FROM ANNAPOLIS.
 HV1524'ALONG STATE HIGHWAY 2, 60 FEET SOUTH OF SIDE ROAD TO THE
 HV1524'NORTHEAST, 12 FEET WEST OF CENTER LINE OF HIGHWAY, IN THE
 HV1524'ANGLE OF AN L SHAPED HEADWALL OF CONCRETE CULVERT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1525 ***********************************************************************
 HV1525  DESIGNATION -  C 18 RESET
 HV1525  PID         -  HV1525
 HV1525  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1525  COUNTRY     -  US
 HV1525  USGS QUAD   -  SOUTH RIVER (2016)
 HV1525
 HV1525                         *CURRENT SURVEY CONTROL
 HV1525  ______________________________________________________________________
 HV1525* NAD 83(1986) POSITION- 38 55 27.6    (N) 076 34 07.6    (W)   HD_HELD2
 HV1525* NAVD 88 ORTHO HEIGHT -    18.039 (meters)       59.18  (feet) ADJUSTED
 HV1525  ______________________________________________________________________
 HV1525  GEOID HEIGHT    -        -33.256 (meters)                     GEOID18
 HV1525  DYNAMIC HEIGHT  -         18.029 (meters)       59.15  (feet) COMP
 HV1525  MODELED GRAVITY -    980,066.6   (mgal)                       NAVD 88
 HV1525
 HV1525  VERT ORDER      -  FIRST     CLASS I
 HV1525
 HV1525.The horizontal coordinates were established by autonomous hand held GPS
 HV1525.observations and have an estimated accuracy of +/- 10 meters.
 HV1525
 HV1525.The orthometric height was determined by differential leveling and
 HV1525.adjusted by the NATIONAL GEODETIC SURVEY
 HV1525.in June 1991.
 HV1525
 HV1525.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1525.GEOID18 height accuracy estimate available here.
 HV1525
 HV1525.Click photographs - Photos may exist for this station.
 HV1525
 HV1525.The dynamic height is computed by dividing the NAVD 88
 HV1525.geopotential number by the normal gravity value computed on the
 HV1525.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1525.degrees latitude (g = 980.6199 gals.).
 HV1525
 HV1525.The modeled gravity was interpolated from observed gravity values.
 HV1525
 HV1525;                    North         East    Units  Estimated Accuracy
 HV1525;SPC MD       -   139,695.      437,393.      MT  (+/- 10 meters HH2 GPS)
 HV1525
 HV1525_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6400809549(NAD 83)
 HV1525
 HV1525                          SUPERSEDED SURVEY CONTROL
 HV1525
 HV1525  NGVD 29 (11/26/84)   18.281  (m)           59.98   (f) ADJUSTED    1 1
 HV1525
 HV1525.Superseded values are not recommended for survey control.
 HV1525
 HV1525.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1525.See file dsdata.pdf to determine how the superseded data were derived.
 HV1525
 HV1525_MARKER: DB = BENCH MARK DISK
 HV1525_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1525_STAMPING: C 18 RESET 1950
 HV1525_MARK LOGO: CGS
 HV1525_PROJECTION: FLUSH
 HV1525_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV1525_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1525+STABILITY: SURFACE MOTION
 HV1525_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1525+SATELLITE: SATELLITE OBSERVATIONS - June 11, 2014
 HV1525
 HV1525  HISTORY     - Date     Condition        Report By
 HV1525  HISTORY     - 1950     MONUMENTED       CGS
 HV1525  HISTORY     - 1971     GOOD             NGS
 HV1525  HISTORY     - 1989     GOOD             USPSQD
 HV1525  HISTORY     - 20010817 GOOD             MDSHA
 HV1525  HISTORY     - 20020209 GOOD             USPSQD
 HV1525  HISTORY     - 20041113 GOOD             USPSQD
 HV1525  HISTORY     - 20051215 GOOD             USPSQD
 HV1525  HISTORY     - 20101221 GOOD             NGS
 HV1525  HISTORY     - 20140611 GOOD             NGS
 HV1525
 HV1525                          STATION DESCRIPTION
 HV1525
 HV1525'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1525'2.3 MI SW FROM EDGEWATER.
 HV1525'ABOUT 2.3 MILES SOUTHWEST ALONG STATE HIGHWAY 2 FROM THE
 HV1525'NORTHEAST END OF THE HIGHWAY BRIDGE OVER THE SOUTH RIVER AT
 HV1525'EDGEWATER, ABOUT 0.15 MILE SOUTH OF THE INTERSECTION OF STATE
 HV1525'HIGHWAY 214 (CENTRAL AVENUE), AT THE JUNCTION OF STEPNEY LANE
 HV1525'WHICH LEADS NORTHEAST, 93 1/2 FEET SOUTH OF THE CENTER LINE OF
 HV1525'THE LANE, 83 FEET SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY,
 HV1525'49 1/2 FEET EAST OF POWER POLE NUMBER 386807, 1.0 FOOT SOUTHWEST
 HV1525'OF A METEL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, AND SET
 HV1525'IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
 HV1525
 HV1525                          STATION RECOVERY (1989)
 HV1525
 HV1525'RECOVERY NOTE BY US POWER SQUADRON 1989 (HS)
 HV1525'RECOVERED IN GOOD CONDITION.
 HV1525
 HV1525                          STATION RECOVERY (2001)
 HV1525
 HV1525'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HV1525'RECOVERED AS DESCRIBED.
 HV1525
 HV1525                          STATION RECOVERY (2002)
 HV1525
 HV1525'RECOVERY NOTE BY US POWER SQUADRON 2002 (ATA)
 HV1525'RECOVERED IN GOOD CONDITION.
 HV1525
 HV1525                          STATION RECOVERY (2004)
 HV1525
 HV1525'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1525'RECOVERED IN GOOD CONDITION.
 HV1525
 HV1525                          STATION RECOVERY (2005)
 HV1525
 HV1525'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV1525'RECOVERED IN GOOD CONDITION.
 HV1525
 HV1525                          STATION RECOVERY (2010)
 HV1525
 HV1525'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HV1525'RECOVERED IN GOOD CONDITION.
 HV1525
 HV1525                          STATION RECOVERY (2014)
 HV1525
 HV1525'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 HV1525'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2165 ***********************************************************************
 HU2165  DESIGNATION -  C 180
 HU2165  PID         -  HU2165
 HU2165  STATE/COUNTY-  MD/WICOMICO
 HU2165  COUNTRY     -  US
 HU2165  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2165
 HU2165                         *CURRENT SURVEY CONTROL
 HU2165  ______________________________________________________________________
 HU2165* NAD 83(1986) POSITION- 38 22 40.4    (N) 075 46 57.2    (W)   HD_HELD2
 HU2165* NAVD 88 ORTHO HEIGHT -     2.313 (meters)        7.59  (feet) ADJUSTED
 HU2165  ______________________________________________________________________
 HU2165  GEOID HEIGHT    -        -35.665 (meters)                     GEOID18
 HU2165  DYNAMIC HEIGHT  -          2.312 (meters)        7.59  (feet) COMP
 HU2165  MODELED GRAVITY -    980,007.1   (mgal)                       NAVD 88
 HU2165
 HU2165  VERT ORDER      -  SECOND    CLASS I
 HU2165
 HU2165.The horizontal coordinates were established by autonomous hand held GPS
 HU2165.observations and have an estimated accuracy of +/- 10 meters.
 HU2165
 HU2165.The orthometric height was determined by differential leveling and
 HU2165.adjusted by the NATIONAL GEODETIC SURVEY
 HU2165.in June 1991.
 HU2165
 HU2165.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2165.GEOID18 height accuracy estimate available here.
 HU2165
 HU2165.Click photographs - Photos may exist for this station.
 HU2165
 HU2165.The dynamic height is computed by dividing the NAVD 88
 HU2165.geopotential number by the normal gravity value computed on the
 HU2165.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2165.degrees latitude (g = 980.6199 gals.).
 HU2165
 HU2165.The modeled gravity was interpolated from observed gravity values.
 HU2165
 HU2165;                    North         East    Units  Estimated Accuracy
 HU2165;SPC MD       -    79,658.      506,376.      MT  (+/- 10 meters HH2 GPS)
 HU2165
 HU2165_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3164748033(NAD 83)
 HU2165
 HU2165                          SUPERSEDED SURVEY CONTROL
 HU2165
 HU2165  NGVD 29 (06/12/91)    2.563  (m)            8.41   (f) ADJUSTED    2 1
 HU2165
 HU2165.Superseded values are not recommended for survey control.
 HU2165
 HU2165.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2165.See file dsdata.pdf to determine how the superseded data were derived.
 HU2165
 HU2165_MARKER: F = FLANGE-ENCASED ROD
 HU2165_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2165_STAMPING: C 180 1990
 HU2165_MARK LOGO: NGS
 HU2165_PROJECTION: FLUSH
 HU2165_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2165_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2165_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2165+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2018
 HU2165_ROD/PIPE-DEPTH: 13.2 meters
 HU2165_SLEEVE-DEPTH  : 0.9 meters
 HU2165
 HU2165  HISTORY     - Date     Condition        Report By
 HU2165  HISTORY     - 1990     MONUMENTED       NGS
 HU2165  HISTORY     - 20180718 GOOD             PROFLN
 HU2165
 HU2165                          STATION DESCRIPTION
 HU2165
 HU2165'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2165'3.8 KM (2.36 MI) NORTHWESTERLY ALONG CHERRY WALK ROAD FROM THE
 HU2165'JUNCTION OF STATE HIGHWAY 347 IN QUANTICO, 30.0 M (98.42 FT) WEST OF
 HU2165'THE WEST CORNER OF A HOUSE, 7.0 M (22.97 FT) SOUTHWEST OF THE CENTER
 HU2165'OF THE ROAD, 0.8 M (2.62 FT) NORTHEAST OF A WITNESS POST AND UTILITY
 HU2165'POLE NUMBER YE 20, 0.2 M (0.66 FT) BELOW THE LEVEL OF THE ROAD, AND
 HU2165'ON THE EXTENDED CENTER OF A DRIVEWAY.  NOTE--ACCESS TO THE DATUM
 HU2165'POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2165
 HU2165                          STATION RECOVERY (2018)
 HU2165
 HU2165'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2018 (JRO)
 HU2165'THE MARK IS 51 FT (15.5 M) NORTHWEST OF THE EXTENDED NW LINE OF HOUSE
 HU2165'6667, TWO-STORY GREY SHINGLE AND 2.5 FT (0.8 M) NORTHEAST OR TOWARD
 HU2165'THE ROAD FROM POLE WITH TRANSFORMER 712 132.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2454 ***********************************************************************
 HU2454  DESIGNATION -  C 181
 HU2454  PID         -  HU2454
 HU2454  STATE/COUNTY-  MD/WICOMICO
 HU2454  COUNTRY     -  US
 HU2454  USGS QUAD   -  PITTSVILLE (2016)
 HU2454
 HU2454                         *CURRENT SURVEY CONTROL
 HU2454  ______________________________________________________________________
 HU2454* NAD 83(1986) POSITION- 38 23 09.     (N) 075 29 45.     (W)   SCALED
 HU2454* NAVD 88 ORTHO HEIGHT -    15.253 (meters)       50.04  (feet) ADJUSTED
 HU2454  ______________________________________________________________________
 HU2454  GEOID HEIGHT    -        -35.854 (meters)                     GEOID18
 HU2454  DYNAMIC HEIGHT  -         15.243 (meters)       50.01  (feet) COMP
 HU2454  MODELED GRAVITY -    980,006.8   (mgal)                       NAVD 88
 HU2454
 HU2454  VERT ORDER      -  SECOND    CLASS I
 HU2454
 HU2454.The horizontal coordinates were scaled from a map and have
 HU2454.an estimated accuracy of +/- 6 seconds.
 HU2454
 HU2454.The orthometric height was determined by differential leveling and
 HU2454.adjusted by the NATIONAL GEODETIC SURVEY
 HU2454.in June 1991.
 HU2454
 HU2454.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2454.GEOID18 height accuracy estimate available here.
 HU2454
 HU2454.Click photographs - Photos may exist for this station.
 HU2454
 HU2454.The dynamic height is computed by dividing the NAVD 88
 HU2454.geopotential number by the normal gravity value computed on the
 HU2454.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2454.degrees latitude (g = 980.6199 gals.).
 HU2454
 HU2454.The modeled gravity was interpolated from observed gravity values.
 HU2454
 HU2454;                    North         East    Units  Estimated Accuracy
 HU2454;SPC MD       -    80,910.      531,410.      MT  (+/- 180 meters Scaled)
 HU2454
 HU2454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH566487(NAD 83)
 HU2454
 HU2454                          SUPERSEDED SURVEY CONTROL
 HU2454
 HU2454  NGVD 29 (06/12/91)   15.499  (m)           50.85   (f) ADJUSTED    2 1
 HU2454
 HU2454.Superseded values are not recommended for survey control.
 HU2454
 HU2454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2454.See file dsdata.pdf to determine how the superseded data were derived.
 HU2454
 HU2454_MARKER: I = METAL ROD
 HU2454_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2454_STAMPING: C 181 1990
 HU2454_MARK LOGO: NGS
 HU2454_PROJECTION: RECESSED 3 CENTIMETERS
 HU2454_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2454_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2454_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2454+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2454_ROD/PIPE-DEPTH: 10.8 meters
 HU2454_SLEEVE-DEPTH  : 0.9 meters
 HU2454
 HU2454  HISTORY     - Date     Condition        Report By
 HU2454  HISTORY     - 1990     MONUMENTED       NGS
 HU2454
 HU2454                          STATION DESCRIPTION
 HU2454
 HU2454'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2454'5.5 KM (3.42 MI) EASTERLY ALONG STATE HIGHWAY 346 FROM THE JUNCTION OF
 HU2454'PHILLIP MORRIS DRIVE IN SALISBURY, 28.8 M (94.49 FT) SOUTH OF THE
 HU2454'SOUTHWEST CORNER OF THE GEORGE PERDUE USED CAR OFFICE, 6.7 M
 HU2454'(21.98 FT) SOUTH OF AND LEVEL WITH THE HIGHWAY CENTERLINE, 1.5 M
 HU2454'(4.92 FT) SOUTHEAST OF UTILITY POLE NUMBER 49833 93878, AND 0.3 M
 HU2454'(0.98 FT) NORTH OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT
 HU2454'IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2348 ***********************************************************************
 HU2348  DESIGNATION -  C 182
 HU2348  PID         -  HU2348
 HU2348  STATE/COUNTY-  MD/WICOMICO
 HU2348  COUNTRY     -  US
 HU2348  USGS QUAD   -  SALISBURY (2016)
 HU2348
 HU2348                         *CURRENT SURVEY CONTROL
 HU2348  ______________________________________________________________________
 HU2348* NAD 83(1986) POSITION- 38 18 04.     (N) 075 34 01.     (W)   SCALED
 HU2348* NAVD 88 ORTHO HEIGHT -    12.974 (meters)       42.57  (feet) ADJUSTED
 HU2348  ______________________________________________________________________
 HU2348  GEOID HEIGHT    -        -35.947 (meters)                     GEOID18
 HU2348  DYNAMIC HEIGHT  -         12.966 (meters)       42.54  (feet) COMP
 HU2348  MODELED GRAVITY -    979,998.6   (mgal)                       NAVD 88
 HU2348
 HU2348  VERT ORDER      -  SECOND    CLASS I
 HU2348
 HU2348.The horizontal coordinates were scaled from a map and have
 HU2348.an estimated accuracy of +/- 6 seconds.
 HU2348
 HU2348.The orthometric height was determined by differential leveling and
 HU2348.adjusted by the NATIONAL GEODETIC SURVEY
 HU2348.in June 1991.
 HU2348
 HU2348.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2348.GEOID18 height accuracy estimate available here.
 HU2348
 HU2348.Click photographs - Photos may exist for this station.
 HU2348
 HU2348.The dynamic height is computed by dividing the NAVD 88
 HU2348.geopotential number by the normal gravity value computed on the
 HU2348.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2348.degrees latitude (g = 980.6199 gals.).
 HU2348
 HU2348.The modeled gravity was interpolated from observed gravity values.
 HU2348
 HU2348;                    North         East    Units  Estimated Accuracy
 HU2348;SPC MD       -    71,410.      525,350.      MT  (+/- 180 meters Scaled)
 HU2348
 HU2348_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH504393(NAD 83)
 HU2348
 HU2348                          SUPERSEDED SURVEY CONTROL
 HU2348
 HU2348  NGVD 29 (06/12/91)   13.228  (m)           43.40   (f) ADJUSTED    2 1
 HU2348
 HU2348.Superseded values are not recommended for survey control.
 HU2348
 HU2348.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2348.See file dsdata.pdf to determine how the superseded data were derived.
 HU2348
 HU2348_MARKER: I = METAL ROD
 HU2348_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2348_STAMPING: C 182 1989
 HU2348_MARK LOGO: NGS
 HU2348_PROJECTION: FLUSH
 HU2348_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2348_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2348_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2348+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HU2348_ROD/PIPE-DEPTH: 21.7 meters
 HU2348_SLEEVE-DEPTH  : 0.9 meters
 HU2348
 HU2348  HISTORY     - Date     Condition        Report By
 HU2348  HISTORY     - 1989     MONUMENTED       NGS
 HU2348
 HU2348                          STATION DESCRIPTION
 HU2348
 HU2348'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU2348'2.3 KM (1.43 MI) NORTHEASTERLY ALONG DIVISION STREET FROM ITS JUNCTION
 HU2348'WITH U.S. HIGHWAY 13 IN FRUITLAND, THENCE 3.5 KM (2.17 MI) EASTERLY
 HU2348'ALONG MORRIS MILL ROAD, THENCE 2.5 KM (1.55 MI) SOUTHEASTERLY ALONG
 HU2348'UNION CHURCH ROAD, 33.1 M (108.60 FT) WEST OF THE WEST CORNER OF THE
 HU2348'GRIFFITH RESIDENCE AT 1113 TIMOTHY WAY, 12.6 M (41.34 FT) SOUTHWEST
 HU2348'OF THE CENTER OF A DRIVEWAY, 9.7 M (31.82 FT) NORTHEAST OF THE
 HU2348'CENTERLINE OF THE ROAD, 9.7 M (31.82 FT) SOUTHEAST OF THE CENTER OF
 HU2348'TIMOTHY WAY, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DATUM
 HU2348'POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2330 ***********************************************************************
 HU2330  DESIGNATION -  C 183
 HU2330  PID         -  HU2330
 HU2330  STATE/COUNTY-  MD/WICOMICO
 HU2330  COUNTRY     -  US
 HU2330  USGS QUAD   -  DELMAR (2016)
 HU2330
 HU2330                         *CURRENT SURVEY CONTROL
 HU2330  ______________________________________________________________________
 HU2330* NAD 83(1986) POSITION- 38 25 14.3    (N) 075 33 52.6    (W)   HD_HELD2
 HU2330* NAVD 88 ORTHO HEIGHT -    13.729 (meters)       45.04  (feet) ADJUSTED
 HU2330  ______________________________________________________________________
 HU2330  GEOID HEIGHT    -        -35.771 (meters)                     GEOID18
 HU2330  DYNAMIC HEIGHT  -         13.721 (meters)       45.02  (feet) COMP
 HU2330  MODELED GRAVITY -    980,010.3   (mgal)                       NAVD 88
 HU2330
 HU2330  VERT ORDER      -  SECOND    CLASS I
 HU2330
 HU2330.The horizontal coordinates were established by autonomous hand held GPS
 HU2330.observations and have an estimated accuracy of +/- 10 meters.
 HU2330
 HU2330.The orthometric height was determined by differential leveling and
 HU2330.adjusted by the NATIONAL GEODETIC SURVEY
 HU2330.in June 1991.
 HU2330
 HU2330.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2330.GEOID18 height accuracy estimate available here.
 HU2330
 HU2330.Click photographs - Photos may exist for this station.
 HU2330
 HU2330.The dynamic height is computed by dividing the NAVD 88
 HU2330.geopotential number by the normal gravity value computed on the
 HU2330.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2330.degrees latitude (g = 980.6199 gals.).
 HU2330
 HU2330.The modeled gravity was interpolated from observed gravity values.
 HU2330
 HU2330;                    North         East    Units  Estimated Accuracy
 HU2330;SPC MD       -    84,679.      525,343.      MT  (+/- 10 meters HH2 GPS)
 HU2330
 HU2330_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5071252638(NAD 83)
 HU2330
 HU2330                          SUPERSEDED SURVEY CONTROL
 HU2330
 HU2330  NGVD 29 (06/12/91)   13.984  (m)           45.88   (f) ADJUSTED    2 1
 HU2330
 HU2330.Superseded values are not recommended for survey control.
 HU2330
 HU2330.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2330.See file dsdata.pdf to determine how the superseded data were derived.
 HU2330
 HU2330_MARKER: F = FLANGE-ENCASED ROD
 HU2330_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2330_STAMPING: C 183 1990
 HU2330_MARK LOGO: NGS
 HU2330_PROJECTION: RECESSED 4 CENTIMETERS
 HU2330_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2330_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2330_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2330+SATELLITE: SATELLITE OBSERVATIONS - July 13, 2015
 HU2330_ROD/PIPE-DEPTH: 24.7 meters
 HU2330_SLEEVE-DEPTH  : 0.9 meters
 HU2330
 HU2330  HISTORY     - Date     Condition        Report By
 HU2330  HISTORY     - 1990     MONUMENTED       NGS
 HU2330  HISTORY     - 19990715 GOOD             MDSHA
 HU2330  HISTORY     - 20150713 GOOD             MD1380
 HU2330
 HU2330                          STATION DESCRIPTION
 HU2330
 HU2330'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2330'3.3 KM (2.05 MI) NORTHERLY ALONG U.S. HIGHWAY 13 FROM ITS JUNCTION
 HU2330'WITH ZION ROAD IN SALISBURY, 21.4 M (70.21 FT) WEST OF THE NORTHWEST
 HU2330'CORNER OF THE MARYLAND STATE POLICE BUILDING, 13.8 M (45.28 FT) EAST
 HU2330'OF THE CENTERLINE OF THE NORTHBOUND LANES OF THE HIGHWAY, 13.6 M
 HU2330'(44.62 FT) SOUTH OF THE CENTERLINE OF DAGSBORO ROAD, 6.7 M
 HU2330'(21.98 FT) SOUTH OF A UTILITY POLE, AND 0.3 M (0.98 FT) ABOVE THE
 HU2330'LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2330'5-INCH LOGO CAP.
 HU2330
 HU2330                          STATION RECOVERY (1999)
 HU2330
 HU2330'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HU2330'RECOVERED AS DESCRIBED.
 HU2330
 HU2330                          STATION RECOVERY (2015)
 HU2330
 HU2330'RECOVERY NOTE BY CITY OF SALISBURY MARYLAND 2015
 HU2330'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2292 ***********************************************************************
 HU2292  DESIGNATION -  C 184
 HU2292  PID         -  HU2292
 HU2292  STATE/COUNTY-  MD/WICOMICO
 HU2292  COUNTRY     -  US
 HU2292  USGS QUAD   -  EDEN (2016)
 HU2292
 HU2292                         *CURRENT SURVEY CONTROL
 HU2292  ______________________________________________________________________
 HU2292* NAD 83(1986) POSITION- 38 21 24.     (N) 075 40 08.     (W)   SCALED
 HU2292* NAVD 88 ORTHO HEIGHT -     6.819 (meters)       22.37  (feet) ADJUSTED
 HU2292  ______________________________________________________________________
 HU2292  GEOID HEIGHT    -        -35.784 (meters)                     GEOID18
 HU2292  DYNAMIC HEIGHT  -          6.814 (meters)       22.36  (feet) COMP
 HU2292  MODELED GRAVITY -    980,004.8   (mgal)                       NAVD 88
 HU2292
 HU2292  VERT ORDER      -  SECOND    CLASS I
 HU2292
 HU2292.The horizontal coordinates were scaled from a map and have
 HU2292.an estimated accuracy of +/- 6 seconds.
 HU2292
 HU2292.The orthometric height was determined by differential leveling and
 HU2292.adjusted by the NATIONAL GEODETIC SURVEY
 HU2292.in June 1991.
 HU2292
 HU2292.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2292.GEOID18 height accuracy estimate available here.
 HU2292
 HU2292.Click photographs - Photos may exist for this station.
 HU2292
 HU2292.The dynamic height is computed by dividing the NAVD 88
 HU2292.geopotential number by the normal gravity value computed on the
 HU2292.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2292.degrees latitude (g = 980.6199 gals.).
 HU2292
 HU2292.The modeled gravity was interpolated from observed gravity values.
 HU2292
 HU2292;                    North         East    Units  Estimated Accuracy
 HU2292;SPC MD       -    77,440.      516,340.      MT  (+/- 180 meters Scaled)
 HU2292
 HU2292_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH415456(NAD 83)
 HU2292
 HU2292                          SUPERSEDED SURVEY CONTROL
 HU2292
 HU2292  NGVD 29 (06/12/91)    7.071  (m)           23.20   (f) ADJUSTED    2 1
 HU2292
 HU2292.Superseded values are not recommended for survey control.
 HU2292
 HU2292.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2292.See file dsdata.pdf to determine how the superseded data were derived.
 HU2292
 HU2292_MARKER: I = METAL ROD
 HU2292_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2292_STAMPING: C 184 1990
 HU2292_MARK LOGO: NGS
 HU2292_PROJECTION: RECESSED 2 CENTIMETERS
 HU2292_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2292_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2292_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2292+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2292_ROD/PIPE-DEPTH: 26.8 meters
 HU2292_SLEEVE-DEPTH  : 0.9 meters
 HU2292
 HU2292  HISTORY     - Date     Condition        Report By
 HU2292  HISTORY     - 1990     MONUMENTED       NGS
 HU2292
 HU2292                          STATION DESCRIPTION
 HU2292
 HU2292'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2292'5.4 KM (3.36 MI) SOUTHEASTERLY ALONG PEMBERTON DRIVE FROM THE
 HU2292'JUNCTION OF ELLEGOOD STREET IN SALISBURY, 13.9 M (45.60 FT) NORTH OF
 HU2292'THE NORTHEAST CORNER OF A HOUSE, 6.2 M (20.34 FT) SOUTH OF THE
 HU2292'CENTERLINE OF THE DRIVE, 4.0 M (13.12 FT) SOUTHWEST OF UTILITY POLE
 HU2292'NUMBER 44836 92833, AND LEVEL WITH THE DRIVE.  NOTE--ACCESS TO THE
 HU2292'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2292'PROPERTY OWNED BY RONNIE CAIN, ROUTE 12 BOX 312, SALISBURY, MD 21801,
 HU2292'TELEPHONE NUMBER (301) 749-1209.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2238 ***********************************************************************
 HU2238  DESIGNATION -  C 185
 HU2238  PID         -  HU2238
 HU2238  STATE/COUNTY-  MD/WICOMICO
 HU2238  COUNTRY     -  US
 HU2238  USGS QUAD   -  HEBRON (2016)
 HU2238
 HU2238                         *CURRENT SURVEY CONTROL
 HU2238  ______________________________________________________________________
 HU2238* NAD 83(1986) POSITION- 38 22 55.6    (N) 075 41 26.2    (W)   HD_HELD2
 HU2238* NAVD 88 ORTHO HEIGHT -    11.764 (meters)       38.60  (feet) ADJUSTED
 HU2238  ______________________________________________________________________
 HU2238  GEOID HEIGHT    -        -35.727 (meters)                     GEOID18
 HU2238  DYNAMIC HEIGHT  -         11.756 (meters)       38.57  (feet) COMP
 HU2238  MODELED GRAVITY -    980,007.7   (mgal)                       NAVD 88
 HU2238
 HU2238  VERT ORDER      -  SECOND    CLASS I
 HU2238
 HU2238.The horizontal coordinates were established by autonomous hand held GPS
 HU2238.observations and have an estimated accuracy of +/- 10 meters.
 HU2238
 HU2238.The orthometric height was determined by differential leveling and
 HU2238.adjusted by the NATIONAL GEODETIC SURVEY
 HU2238.in June 1991.
 HU2238
 HU2238.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2238.GEOID18 height accuracy estimate available here.
 HU2238
 HU2238.Click photographs - Photos may exist for this station.
 HU2238
 HU2238.The dynamic height is computed by dividing the NAVD 88
 HU2238.geopotential number by the normal gravity value computed on the
 HU2238.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2238.degrees latitude (g = 980.6199 gals.).
 HU2238
 HU2238.The modeled gravity was interpolated from observed gravity values.
 HU2238
 HU2238;                    North         East    Units  Estimated Accuracy
 HU2238;SPC MD       -    80,238.      514,402.      MT  (+/- 10 meters HH2 GPS)
 HU2238
 HU2238_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3968148438(NAD 83)
 HU2238
 HU2238                          SUPERSEDED SURVEY CONTROL
 HU2238
 HU2238  NGVD 29 (06/12/91)   12.013  (m)           39.41   (f) ADJUSTED    2 1
 HU2238
 HU2238.Superseded values are not recommended for survey control.
 HU2238
 HU2238.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2238.See file dsdata.pdf to determine how the superseded data were derived.
 HU2238
 HU2238_MARKER: F = FLANGE-ENCASED ROD
 HU2238_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2238_STAMPING: C 185 1990
 HU2238_MARK LOGO: NGS
 HU2238_PROJECTION: RECESSED 5 CENTIMETERS
 HU2238_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2238_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2238_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2238+SATELLITE: SATELLITE OBSERVATIONS - September 06, 2018
 HU2238_ROD/PIPE-DEPTH: 21.3 meters
 HU2238_SLEEVE-DEPTH  : 0.9 meters
 HU2238
 HU2238  HISTORY     - Date     Condition        Report By
 HU2238  HISTORY     - 1990     MONUMENTED       NGS
 HU2238  HISTORY     - 20180906 GOOD             ARCSHE
 HU2238
 HU2238                          STATION DESCRIPTION
 HU2238
 HU2238'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2238'2.2 KM (1.37 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU2238'ROAD) FROM THE JUNCTION OF RAILROAD AVENUE IN HEBRON, THENCE 0.7 KM
 HU2238'(0.43 MI) SOUTHEASTERLY ALONG QUANTICO CREEK ROAD, THENCE 2.3 KM
 HU2238'(1.43 MI) SOUTHEASTERLY ALONG FIRE TOWER ROAD, 19.6 M (64.30 FT)
 HU2238'SOUTHEAST OF UTILITY POLE NUMBER 702-172-5, 15.1 M (49.54 FT)
 HU2238'NORTHWEST OF THE NORTHWEST CORNER OF A HOUSE, 13.6 M (44.62 FT) EAST
 HU2238'OF THE CENTER OF THE ROAD, 3.7 M (12.14 FT) NORTH OF THE CENTER OF A
 HU2238'DRIVEWAY, AND 0.6 M (1.97 FT) ABOVE THE LEVEL OF THE ROAD.
 HU2238'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE
 HU2238'MONUMENT IS ON PROPERTY OWNED BY MARIANNE CHAPIN, RT 1 BOX 81 B,
 HU2238'HEBRON, MD 21830, TELEPHONE NUMBER (301) 742-1774.
 HU2238
 HU2238                          STATION RECOVERY (2018)
 HU2238
 HU2238'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 HU2238'IT IS 45.5 FT (13.9 M) EAST OF THE CENTERLINE OF THE ROAD AND 34.5 FT
 HU2238'(10.5 M) NORTH OF THE EXTENDED NORTH SIDE OF HOUSE NUMBER 6845.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2136 ***********************************************************************
 HU2136  DESIGNATION -  C 186
 HU2136  PID         -  HU2136
 HU2136  STATE/COUNTY-  MD/WICOMICO
 HU2136  COUNTRY     -  US
 HU2136  USGS QUAD   -  RHODESDALE (2016)
 HU2136
 HU2136                         *CURRENT SURVEY CONTROL
 HU2136  ______________________________________________________________________
 HU2136* NAD 83(1986) POSITION- 38 30 10.2    (N) 075 45 27.2    (W)   HD_HELD2
 HU2136* NAVD 88 ORTHO HEIGHT -     2.425 (meters)        7.96  (feet) ADJUSTED
 HU2136  ______________________________________________________________________
 HU2136  GEOID HEIGHT    -        -35.545 (meters)                     GEOID18
 HU2136  DYNAMIC HEIGHT  -          2.424 (meters)        7.95  (feet) COMP
 HU2136  MODELED GRAVITY -    980,011.7   (mgal)                       NAVD 88
 HU2136
 HU2136  VERT ORDER      -  SECOND    CLASS I
 HU2136
 HU2136.The horizontal coordinates were established by autonomous hand held GPS
 HU2136.observations and have an estimated accuracy of +/- 10 meters.
 HU2136
 HU2136.The orthometric height was determined by differential leveling and
 HU2136.adjusted by the NATIONAL GEODETIC SURVEY
 HU2136.in June 1991.
 HU2136
 HU2136.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2136.GEOID18 height accuracy estimate available here.
 HU2136
 HU2136.Click photographs - Photos may exist for this station.
 HU2136
 HU2136.The dynamic height is computed by dividing the NAVD 88
 HU2136.geopotential number by the normal gravity value computed on the
 HU2136.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2136.degrees latitude (g = 980.6199 gals.).
 HU2136
 HU2136.The modeled gravity was interpolated from observed gravity values.
 HU2136
 HU2136;                    North         East    Units  Estimated Accuracy
 HU2136;SPC MD       -    93,555.      508,371.      MT  (+/- 10 meters HH2 GPS)
 HU2136
 HU2136_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3394461879(NAD 83)
 HU2136
 HU2136                          SUPERSEDED SURVEY CONTROL
 HU2136
 HU2136  NGVD 29 (06/12/91)    2.670  (m)            8.76   (f) ADJUSTED    2 1
 HU2136
 HU2136.Superseded values are not recommended for survey control.
 HU2136
 HU2136.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2136.See file dsdata.pdf to determine how the superseded data were derived.
 HU2136
 HU2136_MARKER: F = FLANGE-ENCASED ROD
 HU2136_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2136_STAMPING: C 186 1990
 HU2136_MARK LOGO: NGS
 HU2136_PROJECTION: RECESSED 9 CENTIMETERS
 HU2136_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2136_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2136+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2017
 HU2136_ROD/PIPE-DEPTH: 23.0 meters
 HU2136_SLEEVE-DEPTH  : 0.9 meters
 HU2136
 HU2136  HISTORY     - Date     Condition        Report By
 HU2136  HISTORY     - 1990     MONUMENTED       NGS
 HU2136  HISTORY     - 20170329 GOOD             PROFLN
 HU2136
 HU2136                          STATION DESCRIPTION
 HU2136
 HU2136'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2136'5.0 KM (3.11 MI) NORTHERLY ALONG STATE HIGHWAY 313 FROM THE JUNCTION
 HU2136'OF STATE HIGHWAY 54 IN MARDELA SPRINGS, THENCE 2.1 KM (1.30 MI)
 HU2136'SOUTHWESTERLY ALONG STATE HIGHWAY 460 (RIVERTON ROAD), 51.6 M (169.29
 HU2136'FT) SOUTH OF UTILITY POLE NUMBER 42362 98196, 45.2 M (148.29 FT)
 HU2136'NORTHWEST OF THE NORTHWEST CORNER OF A HOUSE, 20.6 M (67.59 FT) NORTH
 HU2136'OF UTILITY POLE NUMBER 42364 98171, 8.0 M (26.25 FT) EAST OF THE
 HU2136'CENTER OF THE ROAD, AND 0.3 M (0.98 FT) ABOVE THE LEVEL OF THE ROAD.
 HU2136'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE
 HU2136'MONUMENT IS ON PRPPERTY OWNED BY MR STEVE MASSEY, RT 1 BOX 112,
 HU2136'MARDELA SPRINGS, MD 21837, TELEPHONE NUMBER (301) 883-3361.
 HU2136
 HU2136                          STATION RECOVERY (2017)
 HU2136
 HU2136'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2136'THE POWER POLES ARE GONE NOW, LINE PUT UNDERGROUND.  THE MARK IS 101
 HU2136'FT (30.8 M) NORTH OF THE NORTH LINE EXTENDED OF 1-STORY HOUSE 11201,
 HU2136'89 FT (27.1 M) NORTHEAST ACROSS THE ROAD FROM TRANSFORMER BOX 42358
 HU2136'OVER 98171, 85 FT (25.9 M) SOUTH-SOUTHEAST OF A SIGN - SCHOOL BUS STOP
 HU2136'AHEAD.  THE LOGO CAP IS 0.1 FT (3 CM) BELOW GROUND, MARK 0.3 FT (9 CM)
 HU2136'BELOW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2254 ***********************************************************************
 HU2254  DESIGNATION -  C 187
 HU2254  PID         -  HU2254
 HU2254  STATE/COUNTY-  MD/WICOMICO
 HU2254  COUNTRY     -  US
 HU2254  USGS QUAD   -  WETIPQUIN (2016)
 HU2254
 HU2254                         *CURRENT SURVEY CONTROL
 HU2254  ______________________________________________________________________
 HU2254* NAD 83(1986) POSITION- 38 20 00.8    (N) 075 50 05.2    (W)   HD_HELD2
 HU2254* NAVD 88 ORTHO HEIGHT -     3.826 (meters)       12.55  (feet) ADJUSTED
 HU2254  ______________________________________________________________________
 HU2254  GEOID HEIGHT    -        -35.701 (meters)                     GEOID18
 HU2254  DYNAMIC HEIGHT  -          3.823 (meters)       12.54  (feet) COMP
 HU2254  MODELED GRAVITY -    979,999.3   (mgal)                       NAVD 88
 HU2254
 HU2254  VERT ORDER      -  SECOND    CLASS I
 HU2254
 HU2254.The horizontal coordinates were established by autonomous hand held GPS
 HU2254.observations and have an estimated accuracy of +/- 10 meters.
 HU2254
 HU2254.The orthometric height was determined by differential leveling and
 HU2254.adjusted by the NATIONAL GEODETIC SURVEY
 HU2254.in June 1991.
 HU2254
 HU2254.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2254.GEOID18 height accuracy estimate available here.
 HU2254
 HU2254.Click photographs - Photos may exist for this station.
 HU2254
 HU2254.The dynamic height is computed by dividing the NAVD 88
 HU2254.geopotential number by the normal gravity value computed on the
 HU2254.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2254.degrees latitude (g = 980.6199 gals.).
 HU2254
 HU2254.The modeled gravity was interpolated from observed gravity values.
 HU2254
 HU2254;                    North         East    Units  Estimated Accuracy
 HU2254;SPC MD       -    74,678.      501,876.      MT  (+/- 10 meters HH2 GPS)
 HU2254
 HU2254_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2704143154(NAD 83)
 HU2254
 HU2254                          SUPERSEDED SURVEY CONTROL
 HU2254
 HU2254  NGVD 29 (06/12/91)    4.079  (m)           13.38   (f) ADJUSTED    2 1
 HU2254
 HU2254.Superseded values are not recommended for survey control.
 HU2254
 HU2254.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2254.See file dsdata.pdf to determine how the superseded data were derived.
 HU2254
 HU2254_MARKER: F = FLANGE-ENCASED ROD
 HU2254_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2254_STAMPING: C 187 1990
 HU2254_MARK LOGO: NGS
 HU2254_PROJECTION: RECESSED 5 CENTIMETERS
 HU2254_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2254_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2254_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2254+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2019
 HU2254_ROD/PIPE-DEPTH: 13.3 meters
 HU2254_SLEEVE-DEPTH  : 0.9 meters
 HU2254
 HU2254  HISTORY     - Date     Condition        Report By
 HU2254  HISTORY     - 1990     MONUMENTED       NGS
 HU2254  HISTORY     - 20190519 GOOD             PROFLN
 HU2254
 HU2254                          STATION DESCRIPTION
 HU2254
 HU2254'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2254'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2254'OFFICE IN QUANTICO, THENCE 7.8 KM (4.85 MI) SOUTHWESTERLY ALONG STATE
 HU2254'HIGHWAY 349, THENCE 2.2 KM (1.37 MI) WESTERLY ALONG STATE HIGHWAY
 HU2254'478, 26.8 M (87.93 FT) WEST OF A UTILITY POLE, 14.5 M (47.57 FT)
 HU2254'SOUTH OF THE SOUTHWEST CORNER OF A MODULAR HOME, 7.3 M (23.95 FT)
 HU2254'EAST OF THE CENTER OF A DRIVEWAY, 5.5 M (18.04 FT) NORTH OF AND LEVEL
 HU2254'WITH THE ROAD CENTER.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2254'5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY ALMA TERRY, RT
 HU2254'1 BOX 171 A, QUANTICO, MD 21856 (301-873-2579).
 HU2254
 HU2254                          STATION RECOVERY (2019)
 HU2254
 HU2254'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2254'THE MARK LINES RIGHT UP WITH THE EXTENDED WEST LINE OF HOUSE 22516,
 HU2254'BLUE DOUBLE-WIDE MOBILE HOME, IN LINE WITH A ROW OF YUCCA PLANTS
 HU2254'ACROSS THE FRONT OF THE YARD.  THE LOGO CAP IS FLUSH.  THE UTILITY
 HU2254'POLE CALLED FOR IS NUMBER 712 059 183.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2399 ***********************************************************************
 HU2399  DESIGNATION -  C 188
 HU2399  PID         -  HU2399
 HU2399  STATE/COUNTY-  MD/WICOMICO
 HU2399  COUNTRY     -  US
 HU2399  USGS QUAD   -  DELMAR (2016)
 HU2399
 HU2399                         *CURRENT SURVEY CONTROL
 HU2399  ______________________________________________________________________
 HU2399* NAD 83(1986) POSITION- 38 24 49.     (N) 075 30 57.     (W)   SCALED
 HU2399* NAVD 88 ORTHO HEIGHT -    15.881 (meters)       52.10  (feet) ADJUSTED
 HU2399  ______________________________________________________________________
 HU2399  GEOID HEIGHT    -        -35.806 (meters)                     GEOID18
 HU2399  DYNAMIC HEIGHT  -         15.871 (meters)       52.07  (feet) COMP
 HU2399  MODELED GRAVITY -    980,009.5   (mgal)                       NAVD 88
 HU2399
 HU2399  VERT ORDER      -  SECOND    CLASS I
 HU2399
 HU2399.The horizontal coordinates were scaled from a map and have
 HU2399.an estimated accuracy of +/- 6 seconds.
 HU2399
 HU2399.The orthometric height was determined by differential leveling and
 HU2399.adjusted by the NATIONAL GEODETIC SURVEY
 HU2399.in June 1991.
 HU2399
 HU2399.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2399.GEOID18 height accuracy estimate available here.
 HU2399
 HU2399.Click photographs - Photos may exist for this station.
 HU2399
 HU2399.The dynamic height is computed by dividing the NAVD 88
 HU2399.geopotential number by the normal gravity value computed on the
 HU2399.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2399.degrees latitude (g = 980.6199 gals.).
 HU2399
 HU2399.The modeled gravity was interpolated from observed gravity values.
 HU2399
 HU2399;                    North         East    Units  Estimated Accuracy
 HU2399;SPC MD       -    83,970.      529,610.      MT  (+/- 180 meters Scaled)
 HU2399
 HU2399_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH549518(NAD 83)
 HU2399
 HU2399                          SUPERSEDED SURVEY CONTROL
 HU2399
 HU2399  NGVD 29 (06/12/91)   16.132  (m)           52.93   (f) ADJUSTED    2 1
 HU2399
 HU2399.Superseded values are not recommended for survey control.
 HU2399
 HU2399.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2399.See file dsdata.pdf to determine how the superseded data were derived.
 HU2399
 HU2399_MARKER: I = METAL ROD
 HU2399_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2399_STAMPING: C 188 1990
 HU2399_MARK LOGO: NGS
 HU2399_PROJECTION: RECESSED 2 CENTIMETERS
 HU2399_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2399_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2399_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2399+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2399_ROD/PIPE-DEPTH: 21.8 meters
 HU2399_SLEEVE-DEPTH  : 0.9 meters
 HU2399
 HU2399  HISTORY     - Date     Condition        Report By
 HU2399  HISTORY     - 1990     MONUMENTED       NGS
 HU2399
 HU2399                          STATION DESCRIPTION
 HU2399
 HU2399'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2399'6.2 KM (3.85 MI) EASTERLY ALONG ZION ROAD FROM THE JUNCTION OF U.S.
 HU2399'HIGHWAY 13 BUSINESS IN SALISBURY, 17.4 M (57.09 FT) WEST OF THE
 HU2399'EXTENDED CENTER OF ZION ROAD, 10.8 M (35.43 FT) WEST OF THE CENTER OF
 HU2399'A DRIVEWAY LEADING NORTH TO THE MENNONITE CHURCH, 9.4 M (30.84 FT)
 HU2399'NORTH OF AND LEVEL WITH THE CENTERLINE OF DAGSBORO ROAD, AND 4.6 M
 HU2399'(15.09 FT) NORTH-NORTHEAST OF A UTILITY PEDESTAL.  NOTE--ACCESS TO
 HU2399'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2399'PROPERTY OWNED BY THE SALISBURY MENNONITE CHURCH, PHILIP BEAR, RT. 1
 HU2399'BOX 124 B, PITTSVILLE, MD 21850.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2547 ***********************************************************************
 HU2547  DESIGNATION -  C 189
 HU2547  PID         -  HU2547
 HU2547  STATE/COUNTY-  MD/WICOMICO
 HU2547  COUNTRY     -  US
 HU2547  USGS QUAD   -  PITTSVILLE (2016)
 HU2547
 HU2547                         *CURRENT SURVEY CONTROL
 HU2547  ______________________________________________________________________
 HU2547* NAD 83(1986) POSITION- 38 24 45.     (N) 075 25 47.     (W)   SCALED
 HU2547* NAVD 88 ORTHO HEIGHT -    18.335 (meters)       60.15  (feet) ADJUSTED
 HU2547  ______________________________________________________________________
 HU2547  GEOID HEIGHT    -        -35.857 (meters)                     GEOID18
 HU2547  DYNAMIC HEIGHT  -         18.324 (meters)       60.12  (feet) COMP
 HU2547  MODELED GRAVITY -    980,009.4   (mgal)                       NAVD 88
 HU2547
 HU2547  VERT ORDER      -  SECOND    CLASS I
 HU2547
 HU2547.The horizontal coordinates were scaled from a map and have
 HU2547.an estimated accuracy of +/- 6 seconds.
 HU2547
 HU2547.The orthometric height was determined by differential leveling and
 HU2547.adjusted by the NATIONAL GEODETIC SURVEY
 HU2547.in June 1991.
 HU2547
 HU2547.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2547.GEOID18 height accuracy estimate available here.
 HU2547
 HU2547.Click photographs - Photos may exist for this station.
 HU2547
 HU2547.The dynamic height is computed by dividing the NAVD 88
 HU2547.geopotential number by the normal gravity value computed on the
 HU2547.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2547.degrees latitude (g = 980.6199 gals.).
 HU2547
 HU2547.The modeled gravity was interpolated from observed gravity values.
 HU2547
 HU2547;                    North         East    Units  Estimated Accuracy
 HU2547;SPC MD       -    83,970.      537,140.      MT  (+/- 180 meters Scaled)
 HU2547
 HU2547_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH624516(NAD 83)
 HU2547
 HU2547                          SUPERSEDED SURVEY CONTROL
 HU2547
 HU2547  NGVD 29 (06/12/91)   18.582  (m)           60.96   (f) ADJUSTED    2 1
 HU2547
 HU2547.Superseded values are not recommended for survey control.
 HU2547
 HU2547.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2547.See file dsdata.pdf to determine how the superseded data were derived.
 HU2547
 HU2547_MARKER: I = METAL ROD
 HU2547_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2547_STAMPING: C 189 1990
 HU2547_MARK LOGO: NGS
 HU2547_PROJECTION: RECESSED 2 CENTIMETERS
 HU2547_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2547_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2547_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2547+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2547_ROD/PIPE-DEPTH: 8.5 meters
 HU2547_SLEEVE-DEPTH  : 0.9 meters
 HU2547
 HU2547  HISTORY     - Date     Condition        Report By
 HU2547  HISTORY     - 1990     MONUMENTED       NGS
 HU2547
 HU2547                          STATION DESCRIPTION
 HU2547
 HU2547'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2547'1.8 KM (1.12 MI) NORTHWESTERLY ALONG PITTSVILLE ROAD FROM THE JUNCTION
 HU2547'OF STATE HIGHWAY 353 (PITTSVILLE DELAWARE ROAD) IN PITTSVILLE, AT A
 HU2547'HIGHLINE CROSSING, 5.3 M (17.39 FT) SOUTHWEST OF AND LEVEL WITH THE
 HU2547'ROAD CENTER, 0.8 M (2.62 FT) SOUTH OF A FENCE CORNER, AND 0.5 M
 HU2547'(1.64 FT) SOUTHEAST OF A WITNESS POST AND FENCE.  NOTE--ACCESS TO THE
 HU2547'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2387 ***********************************************************************
 HU2387  DESIGNATION -  C 190
 HU2387  PID         -  HU2387
 HU2387  STATE/COUNTY-  MD/WICOMICO
 HU2387  COUNTRY     -  US
 HU2387  USGS QUAD   -  WANGO (2016)
 HU2387
 HU2387                         *CURRENT SURVEY CONTROL
 HU2387  ______________________________________________________________________
 HU2387* NAD 83(1986) POSITION- 38 18 15.     (N) 075 25 13.     (W)   SCALED
 HU2387* NAVD 88 ORTHO HEIGHT -    14.790 (meters)       48.52  (feet) ADJUSTED
 HU2387  ______________________________________________________________________
 HU2387  GEOID HEIGHT    -        -36.013 (meters)                     GEOID18
 HU2387  DYNAMIC HEIGHT  -         14.781 (meters)       48.49  (feet) COMP
 HU2387  MODELED GRAVITY -    979,999.0   (mgal)                       NAVD 88
 HU2387
 HU2387  VERT ORDER      -  SECOND    CLASS I
 HU2387
 HU2387.The horizontal coordinates were scaled from a map and have
 HU2387.an estimated accuracy of +/- 6 seconds.
 HU2387
 HU2387.The orthometric height was determined by differential leveling and
 HU2387.adjusted by the NATIONAL GEODETIC SURVEY
 HU2387.in June 1991.
 HU2387
 HU2387.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2387.GEOID18 height accuracy estimate available here.
 HU2387
 HU2387.Click photographs - Photos may exist for this station.
 HU2387
 HU2387.The dynamic height is computed by dividing the NAVD 88
 HU2387.geopotential number by the normal gravity value computed on the
 HU2387.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2387.degrees latitude (g = 980.6199 gals.).
 HU2387
 HU2387.The modeled gravity was interpolated from observed gravity values.
 HU2387
 HU2387;                    North         East    Units  Estimated Accuracy
 HU2387;SPC MD       -    71,960.      538,170.      MT  (+/- 180 meters Scaled)
 HU2387
 HU2387_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH632396(NAD 83)
 HU2387
 HU2387                          SUPERSEDED SURVEY CONTROL
 HU2387
 HU2387  NGVD 29 (06/12/91)   15.041  (m)           49.35   (f) ADJUSTED    2 1
 HU2387
 HU2387.Superseded values are not recommended for survey control.
 HU2387
 HU2387.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2387.See file dsdata.pdf to determine how the superseded data were derived.
 HU2387
 HU2387_MARKER: I = METAL ROD
 HU2387_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2387_STAMPING: C 190 1990
 HU2387_MARK LOGO: NGS
 HU2387_PROJECTION: RECESSED 3 CENTIMETERS
 HU2387_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2387_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2387_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2387+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2387_ROD/PIPE-DEPTH: 9.6 meters
 HU2387_SLEEVE-DEPTH  : 0.9 meters
 HU2387
 HU2387  HISTORY     - Date     Condition        Report By
 HU2387  HISTORY     - 1990     MONUMENTED       NGS
 HU2387
 HU2387                          STATION DESCRIPTION
 HU2387
 HU2387'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2387'6.6 KM (4.10 MI) SOUTHWESTERLY ALONG SIXTY FOOT ROAD FROM THE JUNCTION
 HU2387'OF STATE HIGHWAY (OCEAN CITY ROAD) IN PITTSVILLE, THENCE 4.9 KM
 HU2387'(3.04 MI) SOUTHERLY ALONG LAWS ROAD, 7.5 M (24.61 FT) NORTHEAST OF
 HU2387'AND LEVEL WITH THE CENTER OF THE ROAD, 0.9 M (2.95 FT) SOUTHEAST OF A
 HU2387'UTILITY PEDESTAL, AND 0.3 M (0.98 FT) SOUTHWEST OF A WITNESS POST.
 HU2387'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8786 ***********************************************************************
 HV8786  DESIGNATION -  C 191
 HV8786  PID         -  HV8786
 HV8786  STATE/COUNTY-  MD/CHARLES
 HV8786  COUNTRY     -  US
 HV8786  USGS QUAD   -  PORT TOBACCO (2016)
 HV8786
 HV8786                         *CURRENT SURVEY CONTROL
 HV8786  ______________________________________________________________________
 HV8786* NAD 83(1986) POSITION- 38 30 49.     (N) 077 01 30.     (W)   SCALED
 HV8786* NAVD 88 ORTHO HEIGHT -     5.753 (meters)       18.87  (feet) ADJUSTED
 HV8786  ______________________________________________________________________
 HV8786  GEOID HEIGHT    -        -32.949 (meters)                     GEOID18
 HV8786  DYNAMIC HEIGHT  -          5.749 (meters)       18.86  (feet) COMP
 HV8786  MODELED GRAVITY -    980,032.7   (mgal)                       NAVD 88
 HV8786
 HV8786  VERT ORDER      -  FIRST     CLASS II
 HV8786
 HV8786.The horizontal coordinates were scaled from a map and have
 HV8786.an estimated accuracy of +/- 6 seconds.
 HV8786
 HV8786.The orthometric height was determined by differential leveling and
 HV8786.adjusted by the NATIONAL GEODETIC SURVEY
 HV8786.in June 1991.
 HV8786
 HV8786.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8786.GEOID18 height accuracy estimate available here.
 HV8786
 HV8786.Click photographs - Photos may exist for this station.
 HV8786
 HV8786.The dynamic height is computed by dividing the NAVD 88
 HV8786.geopotential number by the normal gravity value computed on the
 HV8786.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8786.degrees latitude (g = 980.6199 gals.).
 HV8786
 HV8786.The modeled gravity was interpolated from observed gravity values.
 HV8786
 HV8786;                    North         East    Units  Estimated Accuracy
 HV8786;SPC MD       -    94,010.      397,820.      MT  (+/- 180 meters Scaled)
 HV8786
 HV8786_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH234647(NAD 83)
 HV8786
 HV8786                          SUPERSEDED SURVEY CONTROL
 HV8786
 HV8786.No superseded survey control is available for this station.
 HV8786
 HV8786_MARKER: I = METAL ROD
 HV8786_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8786_STAMPING: C 191 1990
 HV8786_MARK LOGO: NGS
 HV8786_PROJECTION: FLUSH
 HV8786_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8786_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8786_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8786+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8786_ROD/PIPE-DEPTH: 15.7 meters
 HV8786
 HV8786  HISTORY     - Date     Condition        Report By
 HV8786  HISTORY     - 1990     MONUMENTED       NGS
 HV8786
 HV8786                          STATION DESCRIPTION
 HV8786
 HV8786'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8786'4.4 KM (2.73 MI) WESTERLY ALONG STATE HIGHWAY 6 FROM THE JUNCTION OF
 HV8786'U.S. HIGHWAY 301 IN LA PLATA, 18.9 M (62.01 FT) WEST OF THE WEST END
 HV8786'OF A GUARD RAIL, 9.4 M (30.84 FT) NORTH OF THE CENTERLINE OF THE
 HV8786'HIGHWAY, 1.2 M (3.94 FT) WEST OF UTILITY POLE NUMBER 90 WITH 1 GUY
 HV8786'WIRE, 0.6 M (1.97 FT) ABOVE THE LEVEL OF THE HIGHWAY, AND 0.3 M (0.98
 HV8786'FT) SOUTH OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT IS
 HV8786'THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6492 ***********************************************************************
 JV6492  DESIGNATION -  C 192
 JV6492  PID         -  JV6492
 JV6492  STATE/COUNTY-  MD/BALTIMORE
 JV6492  COUNTRY     -  US
 JV6492  USGS QUAD   -  NORRISVILLE (2016)
 JV6492
 JV6492                         *CURRENT SURVEY CONTROL
 JV6492  ______________________________________________________________________
 JV6492* NAD 83(1986) POSITION- 39 40 07.41   (N) 076 35 28.28   (W)   HD_HELD1
 JV6492* NAVD 88 ORTHO HEIGHT -   203.419 (meters)      667.38  (feet) ADJUSTED
 JV6492  ______________________________________________________________________
 JV6492  GEOID HEIGHT    -        -32.372 (meters)                     GEOID18
 JV6492  DYNAMIC HEIGHT  -        203.317 (meters)      667.05  (feet) COMP
 JV6492  MODELED GRAVITY -    980,119.7   (mgal)                       NAVD 88
 JV6492
 JV6492  VERT ORDER      -  SECOND    CLASS II
 JV6492
 JV6492.The horizontal coordinates were determined by differentially corrected
 JV6492.hand held GPS observations or other comparable positioning techniques
 JV6492.and have an estimated accuracy of +/- 3 meters.
 JV6492
 JV6492.The orthometric height was determined by differential leveling and
 JV6492.adjusted by the NATIONAL GEODETIC SURVEY
 JV6492.in June 1991.
 JV6492
 JV6492.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6492.GEOID18 height accuracy estimate available here.
 JV6492
 JV6492.Click photographs - Photos may exist for this station.
 JV6492
 JV6492.The dynamic height is computed by dividing the NAVD 88
 JV6492.geopotential number by the normal gravity value computed on the
 JV6492.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6492.degrees latitude (g = 980.6199 gals.).
 JV6492
 JV6492.The modeled gravity was interpolated from observed gravity values.
 JV6492
 JV6492;                    North         East    Units  Estimated Accuracy
 JV6492;SPC MD       -   222,326.9     435,079.6     MT  (+/- 3 meters HH1 GPS) 
 JV6492
 JV6492_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6351992199(NAD 83)
 JV6492
 JV6492                          SUPERSEDED SURVEY CONTROL
 JV6492
 JV6492.No superseded survey control is available for this station.
 JV6492
 JV6492_MARKER: DV = VERTICAL CONTROL DISK
 JV6492_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6492_SP_SET: BOX CULVERT HEADWALL
 JV6492_STAMPING: C 192 1990
 JV6492_MARK LOGO: NGS
 JV6492_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6492_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6492+STABILITY: SURFACE MOTION
 JV6492_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6492+SATELLITE: SATELLITE OBSERVATIONS - September 17, 2020
 JV6492
 JV6492  HISTORY     - Date     Condition        Report By
 JV6492  HISTORY     - 1990     MONUMENTED       NGS
 JV6492  HISTORY     - 20170122 GOOD             BASE9
 JV6492  HISTORY     - 20200917 GOOD             MD-005
 JV6492
 JV6492                          STATION DESCRIPTION
 JV6492
 JV6492'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JV6492'4.7 KM (2.9 MI) NORTHWESTERLY ALONG STATE HIGHWAY 439 FROM THE
 JV6492'JUNCTION OF STATE HIGHWAY 23 IN SHAWSVILLE, IN TOP OF AND 0.3 M
 JV6492'(1.0 FT) NORTHWEST OF THE SOUTHEAST END OF THE SOUTHWEST CONCRETE
 JV6492'HEADWALL OF A BOX CULVERT UNDER THE HIGHWAY, 5.5 M (18.0 FT)
 JV6492'SOUTHWEST OF THE HIGHWAY CENTERLINE, AND 0.5 M (1.6 FT) ABOVE THE
 JV6492'LEVEL OF THE HIGHWAY.
 JV6492
 JV6492                          STATION RECOVERY (2017)
 JV6492
 JV6492'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 JV6492'RECOVERED IN GOOD CONDITION.
 JV6492
 JV6492                          STATION RECOVERY (2020)
 JV6492
 JV6492'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (SBH)
 JV6492'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 UA0005 ***********************************************************************
 UA0005  DESIGNATION -  C 194
 UA0005  PID         -  UA0005
 UA0005  STATE/COUNTY-  MD/QUEEN ANNES
 UA0005  COUNTRY     -  US
 UA0005  USGS QUAD   -  KENT ISLAND (2016)
 UA0005
 UA0005                         *CURRENT SURVEY CONTROL
 UA0005  ______________________________________________________________________
 UA0005* NAD 83(1986) POSITION- 38 58 19.7    (N) 076 15 08.9    (W)   HD_HELD2
 UA0005* NAVD 88 ORTHO HEIGHT -    12.864 (meters)       42.20  (feet) ADJUSTED
 UA0005  ______________________________________________________________________
 UA0005  GEOID HEIGHT    -        -33.711 (meters)                     GEOID18
 UA0005  DYNAMIC HEIGHT  -         12.857 (meters)       42.18  (feet) COMP
 UA0005  MODELED GRAVITY -    980,078.4   (mgal)                       NAVD 88
 UA0005
 UA0005  VERT ORDER      -  SECOND    CLASS I
 UA0005
 UA0005.The horizontal coordinates were established by autonomous hand held GPS
 UA0005.observations and have an estimated accuracy of +/- 10 meters.
 UA0005
 UA0005.The orthometric height was determined by differential leveling and
 UA0005.adjusted by the NATIONAL GEODETIC SURVEY
 UA0005.in July 1996.
 UA0005
 UA0005.Significant digits in the geoid height do not necessarily reflect accuracy.
 UA0005.GEOID18 height accuracy estimate available here.
 UA0005
 UA0005.Click photographs - Photos may exist for this station.
 UA0005
 UA0005.The dynamic height is computed by dividing the NAVD 88
 UA0005.geopotential number by the normal gravity value computed on the
 UA0005.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 UA0005.degrees latitude (g = 980.6199 gals.).
 UA0005
 UA0005.The modeled gravity was interpolated from observed gravity values.
 UA0005
 UA0005;                    North         East    Units  Estimated Accuracy
 UA0005;SPC MD       -   145,179.      464,777.      MT  (+/- 10 meters HH2 GPS)
 UA0005
 UA0005_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9150114430(NAD 83)
 UA0005
 UA0005                          SUPERSEDED SURVEY CONTROL
 UA0005
 UA0005.No superseded survey control is available for this station.
 UA0005
 UA0005_MARKER: DV = VERTICAL CONTROL DISK
 UA0005_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 UA0005_SP_SET: BRIDGE DECK OVER THE ABUTMENT
 UA0005_STAMPING: C 194 1990
 UA0005_MARK LOGO: NGS
 UA0005_MAGNETIC: O = OTHER; SEE DESCRIPTION
 UA0005_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 UA0005_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 UA0005+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2011
 UA0005
 UA0005  HISTORY     - Date     Condition        Report By
 UA0005  HISTORY     - 1990     MONUMENTED       NGS
 UA0005  HISTORY     - 20010318 GOOD             USPSQD
 UA0005  HISTORY     - 20070222 GOOD             USPSQD
 UA0005  HISTORY     - 20111204 GOOD             NGS
 UA0005
 UA0005                          STATION DESCRIPTION
 UA0005
 UA0005'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990 (RGP)
 UA0005'THE MARKER IS LOCATED ABOUT 13 MI (20.9 KM) EAST OF ANNAPOLIS AND AT
 UA0005'THE WEST END OF THE HIGH BRIDGE OVER KENT NARROWS.  IT IS ON U.S.
 UA0005'HIGHWAY 50 AND 301 RIGHT-OF-WAY.
 UA0005'
 UA0005'TO REACH THE MARKER FROM THE POST OFFICE IN CHESTER, GO WEST ON OLD
 UA0005'STEVENSVILLE QUEENSTOWN ROAD FOR 0.15 MI (0.24 KM) TO A
 UA0005'T-INTERSECTION.  TURN RIGHT AND GO NORTH ON COX NECK ROAD FOR 0.05 MI
 UA0005'(0.08 KM) TO U.S. HIGHWAYS 50 AND 301.  TURN RIGHT AND GO EAST ON U.S.
 UA0005'HIGHWAYS 50 AND 301 FOR 2.0 MI (3.2 KM) TO THE MARKER ON THE LEFT AT
 UA0005'THE WEST END OF THE HIGH BRIDGE OVER KENT NARROWS.  THIS MARKER IS
 UA0005'ALSO 4.8 MI (7.7 KM) EAST ALONG U.S.  HIGHWAYS 50 AND 301 FROM THE
 UA0005'EAST END OF THE CHESAPEAKE BAY BRIDGE.
 UA0005'
 UA0005'THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION
 UA0005'SURVEY DISK SET IN A DRILL HOLE IN THE BACKWALL OF THE ABUTMENT FOR
 UA0005'THE BRIDGE AND NEAR THE NORTHWEST CORNER OF THE WESTBOUND LANE.  IT IS
 UA0005'44.8 FT (13.7 M) NORTH OF THE CENTER OF THE DUAL BRIDGES, 1.7 FT
 UA0005'(0.5 M) SOUTH OF THE BOTTOM OF THE NORTH PARAPET WALL, 0.5 FT (0.2 M)
 UA0005'EAST OF THE WEST END OF THE BACK WALL AND 1.5 FT (0.5 M) WEST OF THE
 UA0005'MOST WESTERLY EXPANSION JOINT ON THE BRIDGE.
 UA0005
 UA0005                          STATION RECOVERY (2001)
 UA0005
 UA0005'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKW)
 UA0005'RECOVERED IN GOOD CONDITION.
 UA0005
 UA0005                          STATION RECOVERY (2007)
 UA0005
 UA0005'RECOVERY NOTE BY US POWER SQUADRON 2007 (JKW)
 UA0005'RECOVERED IN GOOD CONDITION.
 UA0005
 UA0005                          STATION RECOVERY (2011)
 UA0005
 UA0005'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 UA0005'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8920 ***********************************************************************
 HV8920  DESIGNATION -  C 195
 HV8920  PID         -  HV8920
 HV8920  STATE/COUNTY-  MD/DORCHESTER
 HV8920  COUNTRY     -  US
 HV8920  USGS QUAD   -  GOLDEN HILL (2016)
 HV8920
 HV8920                         *CURRENT SURVEY CONTROL
 HV8920  ______________________________________________________________________
 HV8920* NAD 83(1986) POSITION- 38 27 01.8    (N) 076 08 12.4    (W)   HD_HELD2
 HV8920* NAVD 88 ORTHO HEIGHT -     0.949 (meters)        3.11  (feet) ADJUSTED
 HV8920  ______________________________________________________________________
 HV8920  GEOID HEIGHT    -        -35.123 (meters)                     GEOID18
 HV8920  DYNAMIC HEIGHT  -          0.948 (meters)        3.11  (feet) COMP
 HV8920  MODELED GRAVITY -    980,006.3   (mgal)                       NAVD 88
 HV8920
 HV8920  VERT ORDER      -  SECOND    CLASS I
 HV8920
 HV8920.The horizontal coordinates were established by autonomous hand held GPS
 HV8920.observations and have an estimated accuracy of +/- 10 meters.
 HV8920
 HV8920.The orthometric height was determined by differential leveling and
 HV8920.adjusted by the NATIONAL GEODETIC SURVEY
 HV8920.in August 1994.
 HV8920
 HV8920.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8920.GEOID18 height accuracy estimate available here.
 HV8920
 HV8920.Click photographs - Photos may exist for this station.
 HV8920
 HV8920.The dynamic height is computed by dividing the NAVD 88
 HV8920.geopotential number by the normal gravity value computed on the
 HV8920.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8920.degrees latitude (g = 980.6199 gals.).
 HV8920
 HV8920.The modeled gravity was interpolated from observed gravity values.
 HV8920
 HV8920;                    North         East    Units  Estimated Accuracy
 HV8920;SPC MD       -    87,365.      475,350.      MT  (+/- 10 meters HH2 GPS)
 HV8920
 HV8920_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0080656412(NAD 83)
 HV8920
 HV8920                          SUPERSEDED SURVEY CONTROL
 HV8920
 HV8920.No superseded survey control is available for this station.
 HV8920
 HV8920_MARKER: DV = VERTICAL CONTROL DISK
 HV8920_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8920_STAMPING: C 195 1990
 HV8920_MARK LOGO: NGS
 HV8920_PROJECTION: RECESSED 3 CENTIMETERS
 HV8920_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8920_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8920+STABILITY: SURFACE MOTION
 HV8920_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8920+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2014
 HV8920
 HV8920  HISTORY     - Date     Condition        Report By
 HV8920  HISTORY     - 1990     MONUMENTED       MDSHA
 HV8920  HISTORY     - 20060105 GOOD             USPSQD
 HV8920  HISTORY     - 20070130 GOOD             USPSQD
 HV8920  HISTORY     - 20140208 GOOD             ARCSHE
 HV8920
 HV8920                          STATION DESCRIPTION
 HV8920
 HV8920'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HV8920'6.25 KM (3.88 MI) SOUTH ALONG STATE HIGHWAY 335 FROM THE JUNCTION OF
 HV8920'STATE HIGHWAY 16 AT CHURCH CREEK, AT THE JUNCTION OF KEY WALLACE
 HV8920'ROAD, 45.2 FT (13.8 M) SOUTHWEST OF THE CENTERLINE OF KEY WALLACE
 HV8920'ROAD, 44.6 FT (13.6 M) EAST OF THE CENTERLINE OF STATE HIGHWAY 335,
 HV8920'109.0 FT (33.2 M) SOUTHWEST OF POWER POLE NUMBER 30C, 187.3 FT
 HV8920'(57.1 M) WEST OF POWER POLE NUMBER 30-235, SET IN THE TOP OF A 1.0 FT
 HV8920'(0.3 M) ROUND CONCRETE POST FLUSH WITH THE GROUND AND 0.5 FT (0.2 M)
 HV8920'HIGHER THE STATE HIGHWAY 335.
 HV8920
 HV8920                          STATION RECOVERY (2006)
 HV8920
 HV8920'RECOVERY NOTE BY US POWER SQUADRON 2006 (NNH)
 HV8920'MARK IS 7 FEET NORTH OF A WITTNESS POST. IT IS IN FRONT OF A SIGN
 HV8920'SAYING WELCOME TO YOUR NATIONAL WILDLIFE REFUGE SYSTEM.(2' BY 5')
 HV8920
 HV8920                          STATION RECOVERY (2007)
 HV8920
 HV8920'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HV8920'RECOVERED IN GOOD CONDITION.
 HV8920
 HV8920                          STATION RECOVERY (2014)
 HV8920
 HV8920'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV8920'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4389 ***********************************************************************
 JU4389  DESIGNATION -  C 196
 JU4389  PID         -  JU4389
 JU4389  STATE/COUNTY-  MD/QUEEN ANNES
 JU4389  COUNTRY     -  US
 JU4389  USGS QUAD   -  CHURCH HILL (2017)
 JU4389
 JU4389                         *CURRENT SURVEY CONTROL
 JU4389  ______________________________________________________________________
 JU4389* NAD 83(1986) POSITION- 39 11 27.0    (N) 075 54 44.7    (W)   HD_HELD2
 JU4389* NAVD 88 ORTHO HEIGHT -    21.677 (meters)       71.12  (feet) ADJUSTED
 JU4389  ______________________________________________________________________
 JU4389  GEOID HEIGHT    -        -33.664 (meters)                     GEOID18
 JU4389  DYNAMIC HEIGHT  -         21.666 (meters)       71.08  (feet) COMP
 JU4389  MODELED GRAVITY -    980,104.9   (mgal)                       NAVD 88
 JU4389
 JU4389  VERT ORDER      -  SECOND    CLASS I
 JU4389
 JU4389.The horizontal coordinates were established by autonomous hand held GPS
 JU4389.observations and have an estimated accuracy of +/- 10 meters.
 JU4389
 JU4389.The orthometric height was determined by differential leveling and
 JU4389.adjusted by the NATIONAL GEODETIC SURVEY
 JU4389.in July 1996.
 JU4389
 JU4389.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4389.GEOID18 height accuracy estimate available here.
 JU4389
 JU4389.Click photographs - Photos may exist for this station.
 JU4389
 JU4389.The dynamic height is computed by dividing the NAVD 88
 JU4389.geopotential number by the normal gravity value computed on the
 JU4389.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4389.degrees latitude (g = 980.6199 gals.).
 JU4389
 JU4389.The modeled gravity was interpolated from observed gravity values.
 JU4389
 JU4389;                    North         East    Units  Estimated Accuracy
 JU4389;SPC MD       -   169,751.      493,954.      MT  (+/- 10 meters HH2 GPS)
 JU4389
 JU4389_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2120438350(NAD 83)
 JU4389
 JU4389                          SUPERSEDED SURVEY CONTROL
 JU4389
 JU4389.No superseded survey control is available for this station.
 JU4389
 JU4389_MARKER: DD = SURVEY DISK
 JU4389_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4389_STAMPING: C 196 1991
 JU4389_MARK LOGO: MDSHA
 JU4389_PROJECTION: RECESSED 10 CENTIMETERS
 JU4389_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4389_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4389+STABILITY: SURFACE MOTION
 JU4389_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4389+SATELLITE: SATELLITE OBSERVATIONS - February 22, 2013
 JU4389
 JU4389  HISTORY     - Date     Condition        Report By
 JU4389  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4389  HISTORY     - 20020301 GOOD             USPSQD
 JU4389  HISTORY     - 20130222 GOOD             ARCSHE
 JU4389
 JU4389                          STATION DESCRIPTION
 JU4389
 JU4389'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4389'THE MARKER IS LOCATED ABOUT 6.25 MI (10.06 KM) NORTHEAST OF PRICE, 5.0
 JU4389'MI (8.0 KM) NORTHEAST OF CHURCH HILL, 1.25 MI (2.01 KM) NORTHWEST OF
 JU4389'DUDLEY CORNERS AND ALONG THE SOUTHEAST SIDE OF U.S. HIGHWAY 301.  IT
 JU4389'IS ON ROAD RIGHT-OF-WAY.
 JU4389'
 JU4389'TO REACH FROM THE POST OFFICE IN PRICE, GO WEST ON STATE HIGHWAY 405
 JU4389'FOR 0.1 MI (0.2 KM) TO U.S. HIGHWAY 301.  TURN RIGHT AND GO NORTHERLY
 JU4389'ON U.S. HIGHWAY 301 FOR 7.0 MI (11.3 KM) TO THE MARKER ON THE RIGHT.
 JU4389'
 JU4389'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JU4389'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS
 JU4389'RECESSED 0.15 FT (0.05 M) BELOW THE SURFACE OF THE GROUND.  IT IS 43.8
 JU4389'FT (13.4 M) SOUTHEAST OF THE CENTER OF THE NORTHBOUND LANE OF U.S.
 JU4389'HIGHWAY 301, 5.5 FT (1.7 M) WEST OF THE NORTHWEST CORNER OF A
 JU4389'CULTIVATED FIELD, 8 FT (2.4 M) NORTHEAST OF A WOODS CORNER, 2.0 FT
 JU4389'(0.6 M) NORTHWEST OF A CARSONITE WITNESS POST AND ABOUT 1.5 FT (0.5 M)
 JU4389'LOWER THAN THE ROAD.
 JU4389
 JU4389                          STATION RECOVERY (2002)
 JU4389
 JU4389'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4389'CARSONITE POST CUT OFF BY ROW MAINTENANCE EQUIPMENT. REMAINS OF POST
 JU4389'RESET NEXT TO REMAINING BASE.
 JU4389
 JU4389                          STATION RECOVERY (2013)
 JU4389
 JU4389'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU4389'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6914 ***********************************************************************
 JV6914  DESIGNATION -  C 197
 JV6914  PID         -  JV6914
 JV6914  STATE/COUNTY-  MD/C OF BALTIMORE
 JV6914  COUNTRY     -  US
 JV6914  USGS QUAD   -  BALTIMORE EAST (2016)
 JV6914
 JV6914                         *CURRENT SURVEY CONTROL
 JV6914  ______________________________________________________________________
 JV6914* NAD 83(1986) POSITION- 39 17 11.88   (N) 076 31 59.01   (W)   HD_HELD1
 JV6914* NAVD 88 ORTHO HEIGHT -    20.325 (meters)       66.68  (feet) ADJUSTED
 JV6914  ______________________________________________________________________
 JV6914  GEOID HEIGHT    -        -32.909 (meters)                     GEOID18
 JV6914  DYNAMIC HEIGHT  -         20.314 (meters)       66.65  (feet) COMP
 JV6914  MODELED GRAVITY -    980,100.0   (mgal)                       NAVD 88
 JV6914
 JV6914  VERT ORDER      -  SECOND    CLASS I
 JV6914
 JV6914.The horizontal coordinates were determined by differentially corrected
 JV6914.hand held GPS observations or other comparable positioning techniques
 JV6914.and have an estimated accuracy of +/- 3 meters.
 JV6914
 JV6914.The orthometric height was determined by differential leveling and
 JV6914.adjusted by the NATIONAL GEODETIC SURVEY
 JV6914.in June 1995.
 JV6914
 JV6914.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6914.GEOID18 height accuracy estimate available here.
 JV6914
 JV6914.Click photographs - Photos may exist for this station.
 JV6914
 JV6914.The dynamic height is computed by dividing the NAVD 88
 JV6914.geopotential number by the normal gravity value computed on the
 JV6914.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6914.degrees latitude (g = 980.6199 gals.).
 JV6914
 JV6914.The modeled gravity was interpolated from observed gravity values.
 JV6914
 JV6914;                    North         East    Units  Estimated Accuracy
 JV6914;SPC MD       -   179,929.5     440,284.6     MT  (+/- 3 meters HH1 GPS) 
 JV6914
 JV6914_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6778349705(NAD 83)
 JV6914
 JV6914                          SUPERSEDED SURVEY CONTROL
 JV6914
 JV6914.No superseded survey control is available for this station.
 JV6914
 JV6914_MARKER: DD = SURVEY DISK
 JV6914_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6914_STAMPING: C 197 1991
 JV6914_MARK LOGO: MDSHA
 JV6914_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6914_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6914+STABILITY: SURFACE MOTION
 JV6914
 JV6914  HISTORY     - Date     Condition        Report By
 JV6914  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6914
 JV6914                          STATION DESCRIPTION
 JV6914
 JV6914'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6914'THE MARKER IS LOCATED IN THE SOUTHEAST PART OF BALTIMORE, AT THE
 JV6914'HUDSON HEIGHTS AREA AND IN THE SOUTHEAST QUADRANT OF THE INTERSECTION
 JV6914'OF INTERSTATE HIGHWAY 95 AND EASTERN AVENUE.  IT IS ON INTERSTATE
 JV6914'HIGHWAY 95 RIGHT-OF-WAY.  TO REACH FROM THE INTERSTATE HIGHWAY 95
 JV6914'NORTHBOUND TOLL PLAZA WHICH IS LOCATED ON THE NORTHEAST SIDE OF THE
 JV6914'FORT MCHENRY TUNNEL, GO NORTHEAST ON INTERSTATE HIGHWAY 95 FOR 2.4 MI
 JV6914'(3.9 KM) TO THE MARKER ON THE RIGHT.  THE POINT IS MARKED WITH A
 JV6914'MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE TOP OF A
 JV6914'0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS ABOUT 0.1 FT (0.0 M)
 JV6914'BELOW THE SURFACE OF THE GROUND.  IT IS 98.5 FT (30.0 M) SOUTHEAST OF
 JV6914'THE MOST SOUTHEAST EDGE OF THE PAVED SOUTHEAST SHOULDER ALONG THE
 JV6914'NORTHBOUND LANE OF INTERSTATE HIGHWAY 95, 112 FT (34.1 M) NORTHWEST
 JV6914'OF THE CENTER OF THE EXIT RAMP FOR NORTH BOUND INTERSTATE HIGHWAY 95
 JV6914'ONTO EASTERN AVENUE, 126 FT (38.4 M) SOUTHWEST OF OF THE CENTER OF
 JV6914'THE RAMP LEADING FROM EASTERN AVENUE ONTO NORTHBOUND INTERSTATE
 JV6914'HIGHWAY 95, 50.5 FT (15.4 M) NORTH OF A HIGH MAST LIGHTPOLE 56 FT
 JV6914'(17.1 M) NORTHWEST OF THE NORTHEAST END OF A METAL GUARD RAIL, 2.0 FT
 JV6914'(0.6 M) NORTHWEST OF A CARSONITE WITNESS POST AND ABOUT 5 FT (1.5 M)
 JV6914'HIGHER THAN INTERSTATE HIGHWAY 95.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4257 ***********************************************************************
 JU4257  DESIGNATION -  C 198
 JU4257  PID         -  JU4257
 JU4257  STATE/COUNTY-  MD/CECIL
 JU4257  COUNTRY     -  US
 JU4257  USGS QUAD   -  NEWARK WEST (2016)
 JU4257
 JU4257                         *CURRENT SURVEY CONTROL
 JU4257  ______________________________________________________________________
 JU4257* NAD 83(1986) POSITION- 39 38 29.3    (N) 075 48 23.8    (W)   HD_HELD2
 JU4257* NAVD 88 ORTHO HEIGHT -    38.133 (meters)      125.11  (feet) ADJUSTED
 JU4257  ______________________________________________________________________
 JU4257  GEOID HEIGHT    -        -33.075 (meters)                     GEOID18
 JU4257  DYNAMIC HEIGHT  -         38.115 (meters)      125.05  (feet) COMP
 JU4257  MODELED GRAVITY -    980,147.9   (mgal)                       NAVD 88
 JU4257
 JU4257  VERT ORDER      -  SECOND    CLASS I
 JU4257
 JU4257.The horizontal coordinates were established by autonomous hand held GPS
 JU4257.observations and have an estimated accuracy of +/- 10 meters.
 JU4257
 JU4257.The orthometric height was determined by differential leveling and
 JU4257.adjusted by the NATIONAL GEODETIC SURVEY
 JU4257.in June 1995.
 JU4257
 JU4257.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4257.GEOID18 height accuracy estimate available here.
 JU4257
 JU4257.Click photographs - Photos may exist for this station.
 JU4257
 JU4257.The dynamic height is computed by dividing the NAVD 88
 JU4257.geopotential number by the normal gravity value computed on the
 JU4257.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4257.degrees latitude (g = 980.6199 gals.).
 JU4257
 JU4257.The modeled gravity was interpolated from observed gravity values.
 JU4257
 JU4257;                    North         East    Units  Estimated Accuracy
 JU4257;SPC MD       -   219,892.      502,440.      MT  (+/- 10 meters HH2 GPS)
 JU4257
 JU4257_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3078888276(NAD 83)
 JU4257
 JU4257                          SUPERSEDED SURVEY CONTROL
 JU4257
 JU4257.No superseded survey control is available for this station.
 JU4257
 JU4257_MARKER: DD = SURVEY DISK
 JU4257_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JU4257+WITH SETTING: PAVEMENT
 JU4257_SP_SET: HIGHWAY SIGN BASE
 JU4257_STAMPING: C 198 1991
 JU4257_MARK LOGO: MDSHA
 JU4257_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU4257_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4257_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU4257+SATELLITE: SATELLITE OBSERVATIONS - February 06, 2013
 JU4257
 JU4257  HISTORY     - Date     Condition        Report By
 JU4257  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4257  HISTORY     - 20040908 GOOD             GEOCAC
 JU4257  HISTORY     - 20130206 GOOD             INDIV
 JU4257
 JU4257                          STATION DESCRIPTION
 JU4257
 JU4257'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4257'THE MARKER IS LOCATED ABOUT 0.8 MI (1.3 KM) WEST OF THE
 JU4257'MARYLAND-DELAWARE STATE BOUNDARY, 3.5 MI (5.6 KM) NORTHEAST OF ELKTON
 JU4257'AND ALONG THE SOUTH SIDE OF THE NORTHBOUND LANE OF INTERSTATE HIGHWAY
 JU4257'95.  IT IS ON INTERSTATE HIGHWAY 95 RIGHT-OF-WAY.  TO REACH FROM THE
 JU4257'INTERSECTION OF INTERSTATE HIGHWAY 95 AND STATE HIGHWAY 222, GO
 JU4257'NORTHEAST ON INTERSTATE HIGHWAY 95 FOR 14.1 MI (22.7 KM) TO THE
 JU4257'MARKER ON THE RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY
 JU4257'DISK IN THE CONCRETE BASE OF A HIGHWAY SIGN MARKING EXIT 109A AND
 JU4257'109B.  IT IS 16.5 FT (5.0 M) SOUTHWEST OF THE MOST SOUTHWEST EDGE OF
 JU4257'THE EXIT ROAD LEADING FROM THE NORTHBOUND LANE OF INTERSTATE HIGHWAY
 JU4257'95 ONTO STATE HIGHWAY 279, 6 FT (1.8 M) SOUTH OF A GUARDRAIL, 76 FT
 JU4257'(23.2 M) SOUTHEAST OF A METAL LIGHT POLE NUMBERED 03 05 250, 123.5 FT
 JU4257'(37.6 M) NORTHWEST OF A HIGHWAY MILE MARKER NUMBERED M412N AND ABOUT
 JU4257'1.5 FT (0.5 M) LOWER THAN THE SURFACE OF INTERSTATE HIGHWAY 95.
 JU4257
 JU4257                          STATION RECOVERY (2004)
 JU4257
 JU4257'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JU4257'RECOVERED IN GOOD CONDITION.
 JU4257
 JU4257                          STATION RECOVERY (2013)
 JU4257
 JU4257'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (DRD)
 JU4257'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2782 ***********************************************************************
 HU2782  DESIGNATION -  C 199
 HU2782  PID         -  HU2782
 HU2782  STATE/COUNTY-  MD/WORCESTER
 HU2782  COUNTRY     -  US
 HU2782  USGS QUAD   -  BERLIN (2016)
 HU2782
 HU2782                         *CURRENT SURVEY CONTROL
 HU2782  ______________________________________________________________________
 HU2782* NAD 83(2011) POSITION- 38 20 26.78683(N) 075 09 18.69527(W)   ADJUSTED
 HU2782* NAD 83(2011) ELLIP HT-   -32.276 (meters)        (03/04/17)   ADJUSTED
 HU2782* NAD 83(2011) EPOCH   -  2010.00
 HU2782* NAVD 88 ORTHO HEIGHT -     3.746 (meters)       12.29  (feet) ADJUSTED
 HU2782  ______________________________________________________________________
 HU2782  GEOID HEIGHT    -        -36.027 (meters)                     GEOID18
 HU2782  NAD 83(2011) X  -  1,283,321.697 (meters)                     COMP
 HU2782  NAD 83(2011) Y  - -4,841,842.924 (meters)                     COMP
 HU2782  NAD 83(2011) Z  -  3,935,161.674 (meters)                     COMP
 HU2782  LAPLACE CORR    -         -0.56  (seconds)                    DEFLEC18
 HU2782  DYNAMIC HEIGHT  -          3.743 (meters)       12.28  (feet) COMP
 HU2782  MODELED GRAVITY -    980,008.2   (mgal)                       NAVD 88
 HU2782
 HU2782  VERT ORDER      -  SECOND    CLASS I
 HU2782
 HU2782  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2782  Standards:
 HU2782         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2782            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2782  -------------------------------------------------------------------
 HU2782  NETWORK    0.82   1.59           0.37   0.29   0.81     -0.13534905
 HU2782  -------------------------------------------------------------------
 HU2782  Click here for local accuracies and other accuracy information.
 HU2782
 HU2782.The horizontal coordinates were established by GPS observations
 HU2782.and adjusted by the ARCHER-SHEE LAND SURVEYING in March 2017.
 HU2782
 HU2782.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2782.been affixed to the stable North American tectonic plate. See 
 HU2782.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2782
 HU2782.The horizontal coordinates are valid at the epoch date displayed above
 HU2782.which is a decimal equivalence of Year/Month/Day.
 HU2782
 HU2782.The orthometric height was determined by differential leveling and
 HU2782.adjusted by the NATIONAL GEODETIC SURVEY
 HU2782.in November 1994.
 HU2782
 HU2782.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2782.GEOID18 height accuracy estimate available here.
 HU2782
 HU2782.Click photographs - Photos may exist for this station.
 HU2782
 HU2782.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2782
 HU2782.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2782
 HU2782.The ellipsoidal height was determined by GPS observations
 HU2782.and is referenced to NAD 83.
 HU2782
 HU2782.The dynamic height is computed by dividing the NAVD 88
 HU2782.geopotential number by the normal gravity value computed on the
 HU2782.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2782.degrees latitude (g = 980.6199 gals.).
 HU2782
 HU2782.The modeled gravity was interpolated from observed gravity values.
 HU2782
 HU2782. The following values were computed from the NAD 83(2011) position.
 HU2782
 HU2782;                    North         East     Units Scale Factor Converg.
 HU2782;SPC MD       -    76,458.433   561,269.174   MT  0.99999316   +1 09 28.3
 HU2782;SPC MD       -   250,847.38  1,841,430.62   sFT  0.99999316   +1 09 28.3
 HU2782;UTM  18      - 4,243,637.110   486,437.747   MT  0.99960227   -0 05 46.6
 HU2782
 HU2782!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2782!SPC MD       -   1.00000506  x   0.99999316  =   0.99999822
 HU2782!UTM  18      -   1.00000506  x   0.99960227  =   0.99960733
 HU2782
 HU2782_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8643743637(NAD 83)
 HU2782
 HU2782                          SUPERSEDED SURVEY CONTROL
 HU2782
 HU2782  NGVD 29 (02/25/92)    3.990  (m)           13.09   (f) ADJUSTED    2 1
 HU2782
 HU2782.Superseded values are not recommended for survey control.
 HU2782
 HU2782.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2782.See file dsdata.pdf to determine how the superseded data were derived.
 HU2782
 HU2782_MARKER: DV = VERTICAL CONTROL DISK
 HU2782_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2782_STAMPING: C 199 1991
 HU2782_MARK LOGO: NGS
 HU2782_PROJECTION: RECESSED 15 CENTIMETERS
 HU2782_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2782_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2782+STABILITY: SURFACE MOTION
 HU2782_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2782+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2016
 HU2782
 HU2782  HISTORY     - Date     Condition        Report By
 HU2782  HISTORY     - 1991     MONUMENTED       MDSHA
 HU2782  HISTORY     - 20020226 MARK NOT FOUND   USPSQD
 HU2782  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU2782  HISTORY     - 20040409 GOOD             MDSHA
 HU2782  HISTORY     - 20051220 GOOD             USPSQD
 HU2782  HISTORY     - 20070916 GOOD             GEOCAC
 HU2782  HISTORY     - 20160519 GOOD             ARCSHE
 HU2782
 HU2782                          STATION DESCRIPTION
 HU2782
 HU2782'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2782'THE MARK IS LOCATED ABOUT 3.64 MI (5.86 KM) EAST-NORTHEAST OF BERLIN,
 HU2782'3.75 MI (6.03 KM) WEST OF OCEAN CITY AND ON ROAD RIGHT-OF-WAY.  TO
 HU2782'REACH FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN,
 HU2782'GO EAST ON U.S. HIGHWAY 50 FOR 3.34 MI (5.38 KM) TO THE INTERSECTION
 HU2782'OF HOLLY GROVE ROAD AND THE MARK ON THE LEFT IN THE MEDIAN.  IT IS
 HU2782'50.3 FT (15.3 M) WEST OF THE EXTENDED CENTER LINE OF HOLLY GROVE
 HU2782'ROAD, 46.2 FT (14.1 M) NORTH OF THE CENTER LINE OF THE EASTBOUND
 HU2782'LANES OF THE HIGHWAY, 27.2 FT (8.3 M) SOUTH OF THE CENTER LINE OF THE
 HU2782'WESTBOUND LANES OF THE HIGHWAY, 21.4 FT (6.5 M) NORTHWEST OF A
 HU2782'CARSONITE WITNESS POST, 9.2 FT (2.8 M) NORTH OF THE CENTER OF A
 HU2782'CONCRETE FLUME AND SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE
 HU2782'POST FLUSH WITH THE GROUND.
 HU2782
 HU2782                          STATION RECOVERY (2002)
 HU2782
 HU2782'RECOVERY NOTE BY US POWER SQUADRON 2002 (PMF)
 HU2782'MARK NOT FOUND.
 HU2782
 HU2782                          STATION RECOVERY (2003)
 HU2782
 HU2782'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU2782'MARK NOT FOUND.
 HU2782
 HU2782                          STATION RECOVERY (2004)
 HU2782
 HU2782'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (MRA)
 HU2782'THE CROSSOVER HAS BEEN REPLACED AND THE MARK IS NOW RECESSED 0.7 FT
 HU2782'BELOW THE SURFACE.
 HU2782
 HU2782                          STATION RECOVERY (2005)
 HU2782
 HU2782'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU2782'RECOVERED IN GOOD CONDITION.
 HU2782
 HU2782                          STATION RECOVERY (2007)
 HU2782
 HU2782'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 HU2782'RECOVERED IN GOOD CONDITION.
 HU2782
 HU2782                          STATION RECOVERY (2016)
 HU2782
 HU2782'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MRA)
 HU2782'THE MARK IS LOCATED ABOUT 3.8 MI (6.1 KM) WEST OF OCEAN CITY, 3.6 MI
 HU2782'(5.9 KM) EAST-NORTHEAST OF BERLIN AND 3.3 MI (5.3 KM) SOUTH OF OCEAN
 HU2782'PINES AT THE INTERSECTION OF US 50 AND SAMUEL BOWEN ROAD.
 HU2782'
 HU2782'IT IS 55.0 FT (16.8 M) W OF THE CENTERLINE OF SAMEUL BOWEN ROAD, 12.9
 HU2782'FT (3.9 M) N OF A TRAFFIC SIGNAL POLE, 8.5 FT (2.6 M) WEST-NORTHWEST
 HU2782'OF A WITNESS POST, 6.0 FT (1.8 M) NW OF AN ELECTRIC HANDBOX AND SET IN
 HU2782'THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0860 ***********************************************************************
 HV0860  DESIGNATION -  C 2
 HV0860  PID         -  HV0860
 HV0860  STATE/COUNTY-  MD/CHARLES
 HV0860  COUNTRY     -  US
 HV0860  USGS QUAD   -  LA PLATA (2016)
 HV0860
 HV0860                         *CURRENT SURVEY CONTROL
 HV0860  ______________________________________________________________________
 HV0860* NAD 83(1986) POSITION- 38 31 45.     (N) 076 58 35.     (W)   SCALED
 HV0860* NAVD 88 ORTHO HEIGHT -    58.485 (meters)      191.88  (feet) ADJUSTED
 HV0860  ______________________________________________________________________
 HV0860  GEOID HEIGHT    -        -33.031 (meters)                     GEOID18
 HV0860  DYNAMIC HEIGHT  -         58.450 (meters)      191.76  (feet) COMP
 HV0860  MODELED GRAVITY -    980,029.2   (mgal)                       NAVD 88
 HV0860
 HV0860  VERT ORDER      -  FIRST     CLASS II
 HV0860
 HV0860.The horizontal coordinates were scaled from a map and have
 HV0860.an estimated accuracy of +/- 6 seconds.
 HV0860
 HV0860.The orthometric height was determined by differential leveling and
 HV0860.adjusted by the NATIONAL GEODETIC SURVEY
 HV0860.in June 1991.
 HV0860
 HV0860.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0860.GEOID18 height accuracy estimate available here.
 HV0860
 HV0860.Click photographs - Photos may exist for this station.
 HV0860
 HV0860.The dynamic height is computed by dividing the NAVD 88
 HV0860.geopotential number by the normal gravity value computed on the
 HV0860.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0860.degrees latitude (g = 980.6199 gals.).
 HV0860
 HV0860.The modeled gravity was interpolated from observed gravity values.
 HV0860
 HV0860;                    North         East    Units  Estimated Accuracy
 HV0860;SPC MD       -    95,740.      402,060.      MT  (+/- 180 meters Scaled)
 HV0860
 HV0860_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH277663(NAD 83)
 HV0860
 HV0860                          SUPERSEDED SURVEY CONTROL
 HV0860
 HV0860  NGVD 29 (05/01/89)   58.784  (m)          192.86   (f) ADJUSTED    1 2
 HV0860  NGVD 29 (??/??/87)   58.711  (m)          192.62   (f) SUPERSEDED  1 2
 HV0860
 HV0860.Superseded values are not recommended for survey control.
 HV0860
 HV0860.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0860.See file dsdata.pdf to determine how the superseded data were derived.
 HV0860
 HV0860_MARKER: DB = BENCH MARK DISK
 HV0860_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0860_SP_SET: BUILDING
 HV0860_STAMPING: C 2 1917
 HV0860_MARK LOGO: CGS
 HV0860_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0860
 HV0860  HISTORY     - Date     Condition        Report By
 HV0860  HISTORY     - 1917     MONUMENTED       CGS
 HV0860  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0860  HISTORY     - 20090323 MARK NOT FOUND   GEOCAC
 HV0860
 HV0860                          STATION DESCRIPTION
 HV0860
 HV0860'DESCRIBED BY COAST AND GEODETIC SURVEY 1917
 HV0860'AT LA PLATA.
 HV0860'AT LA PLATA, CHARLES COUNTY, ON THE MAIN STREET WHICH CROSSES
 HV0860'THE PENNSYLVANIA RAILROAD TRACK JUST SOUTH OF THE STATION,
 HV0860'300 FEET WEST OF THE TRACK, AT A SMALL RED-BRICK BANK BUILDING,
 HV0860'IN THE EAST WALL, 6 FEET SOUTH OF THE MAIN ENTRANCE, AND 8
 HV0860'BRICKS ABOVE THE WATER TABLE.  A STANDARD DISK, STAMPED C 2 1917
 HV0860'AND SET VERTICALLY.
 HV0860
 HV0860                          STATION RECOVERY (1971)
 HV0860
 HV0860'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0860'MARK NOT FOUND.
 HV0860
 HV0860                          STATION RECOVERY (2009)
 HV0860
 HV0860'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 HV0860'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0038 ***********************************************************************
 JV0038  DESIGNATION -  C 20
 JV0038  PID         -  JV0038
 JV0038  STATE/COUNTY-  MD/CECIL
 JV0038  COUNTRY     -  US
 JV0038  USGS QUAD   -  CONOWINGO DAM (2016)
 JV0038
 JV0038                         *CURRENT SURVEY CONTROL
 JV0038  ______________________________________________________________________
 JV0038* NAD 83(1986) POSITION- 39 39 18.     (N) 076 09 03.     (W)   SCALED
 JV0038* NAVD 88 ORTHO HEIGHT -    25.623 (meters)       84.06  (feet) ADJUSTED
 JV0038  ______________________________________________________________________
 JV0038  GEOID HEIGHT    -        -32.934 (meters)                     GEOID18
 JV0038  DYNAMIC HEIGHT  -         25.611 (meters)       84.03  (feet) COMP
 JV0038  MODELED GRAVITY -    980,146.3   (mgal)                       NAVD 88
 JV0038
 JV0038  VERT ORDER      -  FIRST     CLASS II
 JV0038
 JV0038.The horizontal coordinates were scaled from a map and have
 JV0038.an estimated accuracy of +/- 6 seconds.
 JV0038
 JV0038.The orthometric height was determined by differential leveling and
 JV0038.adjusted by the NATIONAL GEODETIC SURVEY
 JV0038.in June 1991.
 JV0038
 JV0038.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0038.GEOID18 height accuracy estimate available here.
 JV0038
 JV0038.Click photographs - Photos may exist for this station.
 JV0038
 JV0038.The dynamic height is computed by dividing the NAVD 88
 JV0038.geopotential number by the normal gravity value computed on the
 JV0038.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0038.degrees latitude (g = 980.6199 gals.).
 JV0038
 JV0038.The modeled gravity was interpolated from observed gravity values.
 JV0038
 JV0038;                    North         East    Units  Estimated Accuracy
 JV0038;SPC MD       -   221,060.      472,880.      MT  (+/- 180 meters Scaled)
 JV0038
 JV0038_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ012900(NAD 83)
 JV0038
 JV0038                          SUPERSEDED SURVEY CONTROL
 JV0038
 JV0038  NGVD 29 (11/26/84)   25.880  (m)           84.91   (f) ADJUSTED    1 2
 JV0038
 JV0038.Superseded values are not recommended for survey control.
 JV0038
 JV0038.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0038.See file dsdata.pdf to determine how the superseded data were derived.
 JV0038
 JV0038_MARKER: DB = BENCH MARK DISK
 JV0038_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0038_SP_SET: CULVERT
 JV0038_STAMPING: C 20 1955
 JV0038_MARK LOGO: CGS
 JV0038_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0038
 JV0038  HISTORY     - Date     Condition        Report By
 JV0038  HISTORY     - 1955     MONUMENTED       CGS
 JV0038  HISTORY     - 1979     GOOD             NGS
 JV0038
 JV0038                          STATION DESCRIPTION
 JV0038
 JV0038'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0038'1.6 MI SE FROM CONOWINGO DAM.
 JV0038'ABOUT 1.55 MILES SOUTHEAST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV0038'THE STATION AT CONOWINGO DAM, ABOUT 0.45 MILE NORTH OF MILE POST
 JV0038'8, ABOUT 0.35 MILE SOUTH OF SOUTH END OF RAILROAD BRIDGE OVER
 JV0038'OCTORARO CREEK, IN THE TOP OF NORTH END OF EAST CONCRETE HEAD
 JV0038'WALL OF A 40-INCH PIPE CULVERT, 8 1/2 FEET EAST OF EAST RAIL AND
 JV0038'ABOUT 2 FEET BELOW LEVEL OF TRACK.
 JV0038
 JV0038                          STATION RECOVERY (1979)
 JV0038
 JV0038'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0038'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 UA0029 ***********************************************************************
 UA0029  DESIGNATION -  C 200
 UA0029  PID         -  UA0029
 UA0029  STATE/COUNTY-  MD/PRINCE GEORGES
 UA0029  COUNTRY     -  US
 UA0029  USGS QUAD   -  ANACOSTIA (2016)
 UA0029
 UA0029                         *CURRENT SURVEY CONTROL
 UA0029  ______________________________________________________________________
 UA0029* NAD 83(1986) POSITION- 38 48 23.     (N) 076 52 39.     (W)   SCALED
 UA0029* NAVD 88 ORTHO HEIGHT -    82.546 (meters)      270.82  (feet) ADJUSTED
 UA0029  ______________________________________________________________________
 UA0029  GEOID HEIGHT    -        -32.546 (meters)                     GEOID18
 UA0029  DYNAMIC HEIGHT  -         82.500 (meters)      270.67  (feet) COMP
 UA0029  MODELED GRAVITY -    980,068.3   (mgal)                       NAVD 88
 UA0029
 UA0029  VERT ORDER      -  FIRST     CLASS II
 UA0029
 UA0029.This mark is at Andrews Afb Airport (ADW)
 UA0029
 UA0029.The horizontal coordinates were scaled from a map and have
 UA0029.an estimated accuracy of +/- 6 seconds.
 UA0029
 UA0029.The orthometric height was determined by differential leveling and
 UA0029.adjusted by the NATIONAL GEODETIC SURVEY
 UA0029.in August 1994.
 UA0029
 UA0029.Significant digits in the geoid height do not necessarily reflect accuracy.
 UA0029.GEOID18 height accuracy estimate available here.
 UA0029
 UA0029.Click photographs - Photos may exist for this station.
 UA0029
 UA0029.The dynamic height is computed by dividing the NAVD 88
 UA0029.geopotential number by the normal gravity value computed on the
 UA0029.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 UA0029.degrees latitude (g = 980.6199 gals.).
 UA0029
 UA0029.The modeled gravity was interpolated from observed gravity values.
 UA0029
 UA0029;                    North         East    Units  Estimated Accuracy
 UA0029;SPC MD       -   126,520.      410,640.      MT  (+/- 180 meters Scaled)
 UA0029
 UA0029_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH369969(NAD 83)
 UA0029
 UA0029                          SUPERSEDED SURVEY CONTROL
 UA0029
 UA0029.No superseded survey control is available for this station.
 UA0029
 UA0029_MARKER: DV = VERTICAL CONTROL DISK
 UA0029_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 UA0029_SP_SET: SIDEWALK
 UA0029_STAMPING: C 200 1994
 UA0029_MARK LOGO: NGS
 UA0029_MAGNETIC: N = NO MAGNETIC MATERIAL
 UA0029_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 UA0029
 UA0029  HISTORY     - Date     Condition        Report By
 UA0029  HISTORY     - 1994     MONUMENTED       NGS
 UA0029
 UA0029                          STATION DESCRIPTION
 UA0029
 UA0029'DESCRIBED BY NATIONAL GEODETIC SURVEY 1994
 UA0029'AT ANDREWS AIR FORCE BASE, ON THE EAST SIDE OF THE PASSENGER TERMINAL.
 UA0029'SET IN THE SIDEWALK IN FRONT OF THE EXIT DOOR FROM THE VIP LOUNGE.
 UA0029'THIS BENCH MARK IS ALSO A GRAVITY BASE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1816 ***********************************************************************
 HV1816  DESIGNATION -  C 200 PBPP
 HV1816  PID         -  HV1816
 HV1816  STATE/COUNTY-  MD/MONTGOMERY
 HV1816  COUNTRY     -  US
 HV1816  USGS QUAD   -  WASHINGTON WEST (2016)
 HV1816
 HV1816                         *CURRENT SURVEY CONTROL
 HV1816  ______________________________________________________________________
 HV1816* NAD 83(1986) POSITION- 38 56 21.     (N) 077 06 56.     (W)   SCALED
 HV1816* NAVD 88 ORTHO HEIGHT -    41.993 (meters)      137.77  (feet) ADJUSTED
 HV1816  ______________________________________________________________________
 HV1816  GEOID HEIGHT    -        -31.908 (meters)                     GEOID18
 HV1816  DYNAMIC HEIGHT  -         41.970 (meters)      137.70  (feet) COMP
 HV1816  MODELED GRAVITY -    980,094.3   (mgal)                       NAVD 88
 HV1816
 HV1816  VERT ORDER      -  FIRST     CLASS II
 HV1816
 HV1816.The horizontal coordinates were scaled from a map and have
 HV1816.an estimated accuracy of +/- 6 seconds.
 HV1816
 HV1816.The orthometric height was determined by differential leveling and
 HV1816.adjusted by the NATIONAL GEODETIC SURVEY
 HV1816.in June 1991.
 HV1816
 HV1816.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1816.GEOID18 height accuracy estimate available here.
 HV1816
 HV1816.Click photographs - Photos may exist for this station.
 HV1816
 HV1816.The dynamic height is computed by dividing the NAVD 88
 HV1816.geopotential number by the normal gravity value computed on the
 HV1816.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1816.degrees latitude (g = 980.6199 gals.).
 HV1816
 HV1816.The modeled gravity was interpolated from observed gravity values.
 HV1816
 HV1816;                    North         East    Units  Estimated Accuracy
 HV1816;SPC MD       -   141,260.      389,980.      MT  (+/- 180 meters Scaled)
 HV1816
 HV1816_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ166121(NAD 83)
 HV1816
 HV1816                          SUPERSEDED SURVEY CONTROL
 HV1816
 HV1816  NGVD 29 (11/26/84)   42.212  (m)          138.49   (f) ADJUSTED    1 2
 HV1816
 HV1816.Superseded values are not recommended for survey control.
 HV1816
 HV1816.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1816.See file dsdata.pdf to determine how the superseded data were derived.
 HV1816
 HV1816_MARKER: DD = SURVEY DISK
 HV1816_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1816_SP_SET: ABUTMENT
 HV1816_STAMPING: C 200
 HV1816_MARK LOGO: PBPP
 HV1816_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1816
 HV1816  HISTORY     - Date     Condition        Report By
 HV1816  HISTORY     - UNK      MONUMENTED       PBPP
 HV1816  HISTORY     - 1933     GOOD             CGS
 HV1816  HISTORY     - 1947     GOOD             CGS
 HV1816  HISTORY     - 19950710 GOOD             USPSQD
 HV1816
 HV1816                          STATION DESCRIPTION
 HV1816
 HV1816'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1816'AT BROOKMONT.
 HV1816'AT BROOKMONT, MONTGOMERY COUNTY, ON THE GEORGETOWN BRANCH OF THE
 HV1816'BALTIMORE AND OHIO RAILROAD, 0.3 MILE SOUTH OF THE CROSSING OF
 HV1816'MAC ARTHUR BOULEVARD, ABOUT 1400 FEET SOUTH OF THE SOUTH PORTAL OF
 HV1816'DALECARLIA TUNNEL, ABOUT 1000 FEET NORTHWEST OF THE MARYLAND-DISTRICT
 HV1816'OF COLUMBIA LINE, AT STEEL BRIDGE NO. 16, IN THE SOUTH CONCRETE
 HV1816'ABUTMENT, 4 FEET EAST OF THE NORTHWEST CORNER, 6 FEET WEST OF
 HV1816'THE TRACK, AND ABOUT 1-1/4 FEET BELOW THE TOP OF THE RAIL.  A
 HV1816'PUBLIC BUILDINGS AND PUBLIC PARKS STANDARD DISK, STAMPED C 200.
 HV1816
 HV1816                          STATION RECOVERY (1947)
 HV1816
 HV1816'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947
 HV1816'RECOVERED IN GOOD CONDITION.
 HV1816
 HV1816                          STATION RECOVERY (1995)
 HV1816
 HV1816'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV1816'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2080 ***********************************************************************
 HV2080  DESIGNATION -  C 201 PBPP
 HV2080  PID         -  HV2080
 HV2080  STATE/COUNTY-  MD/MONTGOMERY
 HV2080  COUNTRY     -  US
 HV2080  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2080
 HV2080                         *CURRENT SURVEY CONTROL
 HV2080  ______________________________________________________________________
 HV2080* NAD 83(1986) POSITION- 38 56 35.     (N) 077 06 57.     (W)   SCALED
 HV2080* NAVD 88 ORTHO HEIGHT -    65.67  (+/-2cm)      215.5   (feet) VERTCON3
 HV2080  ______________________________________________________________________
 HV2080  GEOID HEIGHT    -        -31.903 (meters)                     GEOID18
 HV2080  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2080
 HV2080.The horizontal coordinates were scaled from a map and have
 HV2080.an estimated accuracy of +/- 6 seconds.
 HV2080
 HV2080.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2080.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2080
 HV2080.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2080.GEOID18 height accuracy estimate available here.
 HV2080
 HV2080.The vertical order pertains to the NGVD 29 superseded value.
 HV2080
 HV2080.Click photographs - Photos may exist for this station.
 HV2080
 HV2080;                    North         East    Units  Estimated Accuracy
 HV2080;SPC MD       -   141,690.      389,960.      MT  (+/- 180 meters Scaled)
 HV2080
 HV2080_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ166125(NAD 83)
 HV2080
 HV2080                          SUPERSEDED SURVEY CONTROL
 HV2080
 HV2080  NGVD 29 (11/26/84)   65.893  (m)          216.18   (f) ADJUSTED    2 1
 HV2080
 HV2080.Superseded values are not recommended for survey control.
 HV2080
 HV2080.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2080.See file dsdata.pdf to determine how the superseded data were derived.
 HV2080
 HV2080_MARKER: DD = SURVEY DISK
 HV2080_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2080_SP_SET: ENGINE BASE
 HV2080_STAMPING: C 201
 HV2080_MARK LOGO: PBPP
 HV2080_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2080
 HV2080  HISTORY     - Date     Condition        Report By
 HV2080  HISTORY     - UNK      MONUMENTED       PBPP
 HV2080  HISTORY     - 1930     GOOD             PBPP
 HV2080
 HV2080                          STATION DESCRIPTION
 HV2080
 HV2080'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2080'AT DALECARLIA.
 HV2080'IN MONTGOMERY COUNTY, MARYLAND, 0.4 MILE NORTHWEST ALONG MAC ARTHUR
 HV2080'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2080'D.C., AT THE TOP OF A HILL, 70 FEET SOUTH OF THE BOULEVARD, IN
 HV2080'THE TOP OF AN OLD CONCRETE ENGINEBASE, AND 8 INCHES FROM THE
 HV2080'NORTHWEST CORNER OF THE MAIN PART OF THE BASE.  A PUBLIC BUILDINGS
 HV2080'AND PUBLIC PARKS STANDARD DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2083 ***********************************************************************
 HV2083  DESIGNATION -  C 203
 HV2083  PID         -  HV2083
 HV2083  STATE/COUNTY-  MD/MONTGOMERY
 HV2083  COUNTRY     -  US
 HV2083  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2083
 HV2083                         *CURRENT SURVEY CONTROL
 HV2083  ______________________________________________________________________
 HV2083* NAD 83(1986) POSITION- 38 56 57.4    (N) 077 07 30.4    (W)   HD_HELD2
 HV2083* NAVD 88 ORTHO HEIGHT -    46.426 (meters)      152.32  (feet) ADJUSTED
 HV2083  ______________________________________________________________________
 HV2083  GEOID HEIGHT    -        -31.884 (meters)                     GEOID18
 HV2083  DYNAMIC HEIGHT  -         46.402 (meters)      152.24  (feet) COMP
 HV2083  MODELED GRAVITY -    980,093.7   (mgal)                       NAVD 88
 HV2083
 HV2083  VERT ORDER      -  THIRD
 HV2083
 HV2083.The horizontal coordinates were established by autonomous hand held GPS
 HV2083.observations and have an estimated accuracy of +/- 10 meters.
 HV2083
 HV2083.The orthometric height was determined by differential leveling and
 HV2083.adjusted by the NATIONAL GEODETIC SURVEY
 HV2083.in September 2004.
 HV2083
 HV2083.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2083.GEOID18 height accuracy estimate available here.
 HV2083
 HV2083.Click photographs - Photos may exist for this station.
 HV2083
 HV2083.The dynamic height is computed by dividing the NAVD 88
 HV2083.geopotential number by the normal gravity value computed on the
 HV2083.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2083.degrees latitude (g = 980.6199 gals.).
 HV2083
 HV2083.The modeled gravity was interpolated from observed gravity values.
 HV2083
 HV2083;                    North         East    Units  Estimated Accuracy
 HV2083;SPC MD       -   142,383.      389,155.      MT  (+/- 10 meters HH2 GPS)
 HV2083
 HV2083_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1584213295(NAD 83)
 HV2083
 HV2083                          SUPERSEDED SURVEY CONTROL
 HV2083
 HV2083  NGVD 29 (11/26/84)   46.644  (m)          153.03   (f) ADJUSTED    2 1
 HV2083
 HV2083.Superseded values are not recommended for survey control.
 HV2083
 HV2083.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2083.See file dsdata.pdf to determine how the superseded data were derived.
 HV2083
 HV2083_MARKER: DD = SURVEY DISK
 HV2083_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2083_SP_SET: AQUEDUCT
 HV2083_STAMPING: C 203
 HV2083_MARK LOGO: PBPP
 HV2083_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV2083_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2083_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2083+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2011
 HV2083
 HV2083  HISTORY     - Date     Condition        Report By
 HV2083  HISTORY     - UNK      MONUMENTED       PBPP
 HV2083  HISTORY     - 1930     GOOD             PBPP
 HV2083  HISTORY     - 19920129 GOOD             MSI
 HV2083  HISTORY     - 20110829 GOOD             NGS
 HV2083  HISTORY     - 20190107 GOOD             GEOCAC
 HV2083
 HV2083                          STATION DESCRIPTION
 HV2083
 HV2083'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2083'1 MI NW FROM DALECARLIA.
 HV2083'IN MONTGOMERY COUNTY, MARYLAND, ABOUT 1 MILE NORTHWEST ALONG
 HV2083'MAC ARTHUR BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE
 HV2083'AT DALECARLIA, D.C., AT A BRICK BREATHER PIPE ON THE OLD
 HV2083'WASHINGTON AQUEDUCT, IN THE BASE OF THE SOUTHWEST FACE, AND 8
 HV2083'FEET NORTHEAST OF THE ROAD.  A PUBLIC BUILDINGS AND PUBLIC PARKS
 HV2083'STANDARD DISK.
 HV2083
 HV2083                          STATION RECOVERY (1992)
 HV2083
 HV2083'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV2083'RECOVERED IN GOOD CONDITION.
 HV2083
 HV2083                          STATION RECOVERY (2011)
 HV2083
 HV2083'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 HV2083'RECOVERED IN GOOD CONDITION.
 HV2083
 HV2083                          STATION RECOVERY (2019)
 HV2083
 HV2083'RECOVERY NOTE BY GEOCACHING 2019
 HV2083'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2084 ***********************************************************************
 HV2084  DESIGNATION -  C 204
 HV2084  PID         -  HV2084
 HV2084  STATE/COUNTY-  MD/MONTGOMERY
 HV2084  COUNTRY     -  US
 HV2084  USGS QUAD   -  FALLS CHURCH (2019)
 HV2084
 HV2084                         *CURRENT SURVEY CONTROL
 HV2084  ______________________________________________________________________
 HV2084* NAD 83(1986) POSITION- 38 57 42.     (N) 077 08 03.     (W)   SCALED
 HV2084* NAVD 88 ORTHO HEIGHT -    45.047 (meters)      147.79  (feet) ADJUSTED
 HV2084  ______________________________________________________________________
 HV2084  GEOID HEIGHT    -        -31.857 (meters)                     GEOID18
 HV2084  DYNAMIC HEIGHT  -         45.023 (meters)      147.71  (feet) COMP
 HV2084  MODELED GRAVITY -    980,093.6   (mgal)                       NAVD 88
 HV2084
 HV2084  VERT ORDER      -  THIRD
 HV2084
 HV2084.The horizontal coordinates were scaled from a map and have
 HV2084.an estimated accuracy of +/- 6 seconds.
 HV2084
 HV2084.The orthometric height was determined by differential leveling and
 HV2084.adjusted by the NATIONAL GEODETIC SURVEY
 HV2084.in September 2004.
 HV2084
 HV2084.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2084.GEOID18 height accuracy estimate available here.
 HV2084
 HV2084.Click photographs - Photos may exist for this station.
 HV2084
 HV2084.The dynamic height is computed by dividing the NAVD 88
 HV2084.geopotential number by the normal gravity value computed on the
 HV2084.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2084.degrees latitude (g = 980.6199 gals.).
 HV2084
 HV2084.The modeled gravity was interpolated from observed gravity values.
 HV2084
 HV2084;                    North         East    Units  Estimated Accuracy
 HV2084;SPC MD       -   143,760.      388,370.      MT  (+/- 180 meters Scaled)
 HV2084
 HV2084_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ150146(NAD 83)
 HV2084
 HV2084                          SUPERSEDED SURVEY CONTROL
 HV2084
 HV2084  NGVD 29 (11/26/84)   45.268  (m)          148.52   (f) ADJUSTED    2 1
 HV2084
 HV2084.Superseded values are not recommended for survey control.
 HV2084
 HV2084.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2084.See file dsdata.pdf to determine how the superseded data were derived.
 HV2084
 HV2084_MARKER: DD = SURVEY DISK
 HV2084_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2084_SP_SET: AQUEDUCT
 HV2084_STAMPING: C 204
 HV2084_MARK LOGO: PBPP
 HV2084_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV2084_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2084
 HV2084  HISTORY     - Date     Condition        Report By
 HV2084  HISTORY     - UNK      MONUMENTED       PBPP
 HV2084  HISTORY     - 1930     GOOD             PBPP
 HV2084  HISTORY     - 19920129 GOOD             MSI
 HV2084
 HV2084                          STATION DESCRIPTION
 HV2084
 HV2084'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2084'2 MI NW FROM DALECARLIA.
 HV2084'IN MONTGOMERY COUNTY, MARYLAND, ABOUT 2 MILES NORTHWEST ALONG
 HV2084'MAC ARTHUR BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE
 HV2084'AT DALECARLIA, D.C., OPPOSITE MILEPOST 2, IN THE SOUTH CORNER
 HV2084'OF THE REINFORCED-CONCRETE SECTION OF THE OLD WASHINGTON AQUEDUCT,
 HV2084'AND SOUTHWEST OF THE ROAD.  A PUBLIC BUILDINGS AND PUBLIC PARKS
 HV2084'STANDARD DISK.
 HV2084
 HV2084                          STATION RECOVERY (1992)
 HV2084
 HV2084'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV2084'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2086 ***********************************************************************
 HV2086  DESIGNATION -  C 205=648 USE
 HV2086  PID         -  HV2086
 HV2086  STATE/COUNTY-  MD/MONTGOMERY
 HV2086  COUNTRY     -  US
 HV2086  USGS QUAD   -  FALLS CHURCH (2019)
 HV2086
 HV2086                         *CURRENT SURVEY CONTROL
 HV2086  ______________________________________________________________________
 HV2086* NAD 83(1986) POSITION- 38 58 07.     (N) 077 08 21.     (W)   SCALED
 HV2086* NAVD 88 ORTHO HEIGHT -    46.43  (+/-2cm)      152.3   (feet) VERTCON3
 HV2086  ______________________________________________________________________
 HV2086  GEOID HEIGHT    -        -31.842 (meters)                     GEOID18
 HV2086  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2086
 HV2086.The horizontal coordinates were scaled from a map and have
 HV2086.an estimated accuracy of +/- 6 seconds.
 HV2086
 HV2086.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2086.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2086
 HV2086.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2086.GEOID18 height accuracy estimate available here.
 HV2086
 HV2086.The vertical order pertains to the NGVD 29 superseded value.
 HV2086
 HV2086.Click photographs - Photos may exist for this station.
 HV2086
 HV2086;                    North         East    Units  Estimated Accuracy
 HV2086;SPC MD       -   144,530.      387,940.      MT  (+/- 180 meters Scaled)
 HV2086
 HV2086_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ146154(NAD 83)
 HV2086
 HV2086                          SUPERSEDED SURVEY CONTROL
 HV2086
 HV2086  NGVD 29 (11/26/84)   46.659  (m)          153.08   (f) ADJUSTED    2 1
 HV2086
 HV2086.Superseded values are not recommended for survey control.
 HV2086
 HV2086.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2086.See file dsdata.pdf to determine how the superseded data were derived.
 HV2086
 HV2086_MARKER: DD = SURVEY DISK
 HV2086_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2086_SP_SET: AQUEDUCT
 HV2086_STAMPING: 648 USE
 HV2086_MARK LOGO: USACE
 HV2086_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2086_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2086+SATELLITE: SATELLITE OBSERVATIONS - January 17, 1990
 HV2086
 HV2086  HISTORY     - Date     Condition        Report By
 HV2086  HISTORY     - UNK      MONUMENTED       USACE
 HV2086  HISTORY     - 1930     GOOD             PBPP
 HV2086  HISTORY     - 19900117 GOOD             WSSC
 HV2086
 HV2086                          STATION DESCRIPTION
 HV2086
 HV2086'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2086'2.6 MI NW FROM DALECARLIA.
 HV2086'IN MONTGOMERY COUNTY, MARYLAND, 2.6 MILES NORRTHWEST ALONG
 HV2086'MAC ARTHUR BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE
 HV2086'AT DALECARLIA, D.C., AT THE JUNCTION OF A PAVED ROAD LEADING
 HV2086'NORTH, AT A CONCRETE GATE CHAMBER OF THE WASHINGTON AQUEDUCT,
 HV2086'AND IN THE TOP OF THE NORTHWEST CORNER OF THE SOUTH HALF.  A
 HV2086'CORPS OF ENGINEERS, U.S. ARMY, STANDARD DISK.
 HV2086
 HV2086                          STATION RECOVERY (1990)
 HV2086
 HV2086'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 HV2086'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2087 ***********************************************************************
 HV2087  DESIGNATION -  C 206
 HV2087  PID         -  HV2087
 HV2087  STATE/COUNTY-  MD/MONTGOMERY
 HV2087  COUNTRY     -  US
 HV2087  USGS QUAD   -  FALLS CHURCH (2019)
 HV2087
 HV2087                         *CURRENT SURVEY CONTROL
 HV2087  ______________________________________________________________________
 HV2087* NAD 83(1986) POSITION- 38 58 21.     (N) 077 08 53.     (W)   SCALED
 HV2087* NAVD 88 ORTHO HEIGHT -    45.349 (meters)      148.78  (feet) ADJUSTED
 HV2087  ______________________________________________________________________
 HV2087  GEOID HEIGHT    -        -31.829 (meters)                     GEOID18
 HV2087  DYNAMIC HEIGHT  -         45.325 (meters)      148.70  (feet) COMP
 HV2087  MODELED GRAVITY -    980,094.8   (mgal)                       NAVD 88
 HV2087
 HV2087  VERT ORDER      -  SECOND    CLASS I
 HV2087
 HV2087.The horizontal coordinates were scaled from a map and have
 HV2087.an estimated accuracy of +/- 6 seconds.
 HV2087
 HV2087.The orthometric height was determined by differential leveling and
 HV2087.adjusted by the NATIONAL GEODETIC SURVEY
 HV2087.in June 1991.
 HV2087
 HV2087.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2087.GEOID18 height accuracy estimate available here.
 HV2087
 HV2087.Click photographs - Photos may exist for this station.
 HV2087
 HV2087.The dynamic height is computed by dividing the NAVD 88
 HV2087.geopotential number by the normal gravity value computed on the
 HV2087.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2087.degrees latitude (g = 980.6199 gals.).
 HV2087
 HV2087.The modeled gravity was interpolated from observed gravity values.
 HV2087
 HV2087;                    North         East    Units  Estimated Accuracy
 HV2087;SPC MD       -   144,960.      387,170.      MT  (+/- 180 meters Scaled)
 HV2087
 HV2087_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ139159(NAD 83)
 HV2087
 HV2087                          SUPERSEDED SURVEY CONTROL
 HV2087
 HV2087  NGVD 29 (11/26/84)   45.584  (m)          149.55   (f) ADJUSTED    2 1
 HV2087
 HV2087.Superseded values are not recommended for survey control.
 HV2087
 HV2087.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2087.See file dsdata.pdf to determine how the superseded data were derived.
 HV2087
 HV2087_MARKER: DD = SURVEY DISK
 HV2087_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2087_SP_SET: BRIDGE
 HV2087_STAMPING: C 206
 HV2087_MARK LOGO: PBPP
 HV2087_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV2087_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2087
 HV2087  HISTORY     - Date     Condition        Report By
 HV2087  HISTORY     - UNK      MONUMENTED       PBPP
 HV2087  HISTORY     - 1930     GOOD             PBPP
 HV2087  HISTORY     - 1958     GOOD             CGS
 HV2087  HISTORY     - 19920129 GOOD             MSI
 HV2087  HISTORY     - 20110315 MARK NOT FOUND   GEOCAC
 HV2087
 HV2087                          STATION DESCRIPTION
 HV2087
 HV2087'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2087'3.2 MI NE FROM DALECARLIA.
 HV2087'IN MONTGOMERY COUNTY, MARYLAND, 3.2 MILES NORTHWEST ALONG MAC ARTHUR
 HV2087'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2087'D.C., AT THE SOUTH SIDE OF CABIN JOHN BRIDGE, 8 FEET WEST OF THE
 HV2087'EAST END, JUST OUTSIDE THE SOUTH GUARDRAIL, IN THE WASH OF THE
 HV2087'CORNICE, AND LEVEL WITH THE ROAD.  A PUBLIC BUILDINGS AND PUBLIC
 HV2087'PARKS STANDARD DISK.
 HV2087
 HV2087                          STATION RECOVERY (1958)
 HV2087
 HV2087'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV2087'RECOVERED IN GOOD CONDITION.
 HV2087
 HV2087                          STATION RECOVERY (1992)
 HV2087
 HV2087'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV2087'RECOVERED IN GOOD CONDITION.
 HV2087
 HV2087                          STATION RECOVERY (2011)
 HV2087
 HV2087'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 HV2087'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2088 ***********************************************************************
 HV2088  DESIGNATION -  C 207 PBPP
 HV2088  PID         -  HV2088
 HV2088  STATE/COUNTY-  MD/MONTGOMERY
 HV2088  COUNTRY     -  US
 HV2088  USGS QUAD   -  FALLS CHURCH (2019)
 HV2088
 HV2088                         *CURRENT SURVEY CONTROL
 HV2088  ______________________________________________________________________
 HV2088* NAD 83(1986) POSITION- 38 58 25.     (N) 077 09 30.     (W)   SCALED
 HV2088* NAVD 88 ORTHO HEIGHT -    46.253 (meters)      151.75  (feet) ADJUSTED
 HV2088  ______________________________________________________________________
 HV2088  GEOID HEIGHT    -        -31.817 (meters)                     GEOID18
 HV2088  DYNAMIC HEIGHT  -         46.228 (meters)      151.67  (feet) COMP
 HV2088  MODELED GRAVITY -    980,095.4   (mgal)                       NAVD 88
 HV2088
 HV2088  VERT ORDER      -  SECOND    CLASS 0
 HV2088
 HV2088.The horizontal coordinates were scaled from a map and have
 HV2088.an estimated accuracy of +/- 6 seconds.
 HV2088
 HV2088.The orthometric height was determined by differential leveling and
 HV2088.adjusted by the NATIONAL GEODETIC SURVEY
 HV2088.in June 1991.
 HV2088
 HV2088.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2088.GEOID18 height accuracy estimate available here.
 HV2088
 HV2088.Click photographs - Photos may exist for this station.
 HV2088
 HV2088.The dynamic height is computed by dividing the NAVD 88
 HV2088.geopotential number by the normal gravity value computed on the
 HV2088.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2088.degrees latitude (g = 980.6199 gals.).
 HV2088
 HV2088.The modeled gravity was interpolated from observed gravity values.
 HV2088
 HV2088;                    North         East    Units  Estimated Accuracy
 HV2088;SPC MD       -   145,090.      386,280.      MT  (+/- 180 meters Scaled)
 HV2088
 HV2088_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ130160(NAD 83)
 HV2088
 HV2088                          SUPERSEDED SURVEY CONTROL
 HV2088
 HV2088  NGVD 29 (11/26/84)   46.493  (m)          152.54   (f) ADJUSTED    2 0
 HV2088
 HV2088.Superseded values are not recommended for survey control.
 HV2088
 HV2088.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2088.See file dsdata.pdf to determine how the superseded data were derived.
 HV2088
 HV2088_MARKER: DD = SURVEY DISK
 HV2088_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2088_SP_SET: CULVERT
 HV2088_STAMPING: C 207
 HV2088_MARK LOGO: PBPP
 HV2088_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2088
 HV2088  HISTORY     - Date     Condition        Report By
 HV2088  HISTORY     - UNK      MONUMENTED       PBPP
 HV2088  HISTORY     - 1930     GOOD             PBPP
 HV2088  HISTORY     - 1960     GOOD             CGS
 HV2088  HISTORY     - 19950707 MARK NOT FOUND   USPSQD
 HV2088
 HV2088                          STATION DESCRIPTION
 HV2088
 HV2088'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2088'3.8 MI NW FROM DALECARLIA.
 HV2088'IN MONTGOMERY COUNTY, MARYLAND, 3.8 MILES NORTHWEST ALONG MAC ARTHUR
 HV2088'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2088'D.C., 0.6 MILE WEST OF CABIN JOHN BRIDGE, AT CABIN JOHN, 50
 HV2088'FEET SOUTH OF THE POST OFFICE, NORTH OF MAC ARTHUR BOULEVARD, AT
 HV2088'A CULVERT UNDER FIFTH STREET, AND IN THE TOP OF THE WEST HEADWALL.
 HV2088'PUBLIC BUILDINGS AND PUBLIC PARKS STANDARD DISK.
 HV2088
 HV2088                          STATION RECOVERY (1960)
 HV2088
 HV2088'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960
 HV2088'RECOVERED IN GOOD CONDITION.
 HV2088
 HV2088                          STATION RECOVERY (1995)
 HV2088
 HV2088'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV2088'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2089 ***********************************************************************
 HV2089  DESIGNATION -  C 208 PBPP
 HV2089  PID         -  HV2089
 HV2089  STATE/COUNTY-  MD/MONTGOMERY
 HV2089  COUNTRY     -  US
 HV2089  USGS QUAD   -  FALLS CHURCH (2019)
 HV2089
 HV2089                         *CURRENT SURVEY CONTROL
 HV2089  ______________________________________________________________________
 HV2089* NAD 83(1986) POSITION- 38 58 27.     (N) 077 10 13.     (W)   SCALED
 HV2089* NAVD 88 ORTHO HEIGHT -    45.67  (+/-2cm)      149.8   (feet) VERTCON3
 HV2089  ______________________________________________________________________
 HV2089  GEOID HEIGHT    -        -31.802 (meters)                     GEOID18
 HV2089  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2089
 HV2089.The horizontal coordinates were scaled from a map and have
 HV2089.an estimated accuracy of +/- 6 seconds.
 HV2089
 HV2089.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2089.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2089
 HV2089.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2089.GEOID18 height accuracy estimate available here.
 HV2089
 HV2089.The vertical order pertains to the NGVD 29 superseded value.
 HV2089
 HV2089.Click photographs - Photos may exist for this station.
 HV2089
 HV2089;                    North         East    Units  Estimated Accuracy
 HV2089;SPC MD       -   145,150.      385,250.      MT  (+/- 180 meters Scaled)
 HV2089
 HV2089_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ119161(NAD 83)
 HV2089
 HV2089                          SUPERSEDED SURVEY CONTROL
 HV2089
 HV2089  NGVD 29 (11/26/84)   45.899  (m)          150.59   (f) ADJUSTED    2 1
 HV2089
 HV2089.Superseded values are not recommended for survey control.
 HV2089
 HV2089.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2089.See file dsdata.pdf to determine how the superseded data were derived.
 HV2089
 HV2089_MARKER: DD = SURVEY DISK
 HV2089_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2089_SP_SET: BRIDGE COPING
 HV2089_STAMPING: C 208
 HV2089_MARK LOGO: PBPP
 HV2089_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2089
 HV2089  HISTORY     - Date     Condition        Report By
 HV2089  HISTORY     - UNK      MONUMENTED       PBPP
 HV2089  HISTORY     - 1930     GOOD             PBPP
 HV2089  HISTORY     - 20001106 GOOD             USPSQD
 HV2089
 HV2089                          STATION DESCRIPTION
 HV2089
 HV2089'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2089'4.5 MI NW FROM DALECARLIA.
 HV2089'IN MONTGOMERY COUNTY, MARYLAND, 4.5 MILES NORTHWEST ALONG MAC ARTHUR
 HV2089'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2089'D.C., 1.3 MILES WEST OF CABIN JOHN BRIDGE, AT THE SOUTH SIDE OF
 HV2089'OLD WASHINGTON AQUEDUCT BRIDGE NO. 3, IN THE TOP OF THE STONE
 HV2089'COPING, 5 FEET WEST OF THE EAST END OF THE BRIDGE, AND NEAR THE
 HV2089'SOUTH EDGE.  A PUBLIC BUILDINGS AND PUBLIC PARKS STANDARD DISK.
 HV2089
 HV2089                          STATION RECOVERY (2000)
 HV2089
 HV2089'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2089'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2092 ***********************************************************************
 HV2092  DESIGNATION -  C 209 PBPP
 HV2092  PID         -  HV2092
 HV2092  STATE/COUNTY-  MD/MONTGOMERY
 HV2092  COUNTRY     -  US
 HV2092  USGS QUAD   -  FALLS CHURCH (2019)
 HV2092
 HV2092                         *CURRENT SURVEY CONTROL
 HV2092  ______________________________________________________________________
 HV2092* NAD 83(1986) POSITION- 38 58 33.     (N) 077 11 02.     (W)   SCALED
 HV2092* NAVD 88 ORTHO HEIGHT -    46.961 (meters)      154.07  (feet) ADJUSTED
 HV2092  ______________________________________________________________________
 HV2092  GEOID HEIGHT    -        -31.786 (meters)                     GEOID18
 HV2092  DYNAMIC HEIGHT  -         46.936 (meters)      153.99  (feet) COMP
 HV2092  MODELED GRAVITY -    980,097.1   (mgal)                       NAVD 88
 HV2092
 HV2092  VERT ORDER      -  SECOND    CLASS 0
 HV2092
 HV2092.The horizontal coordinates were scaled from a map and have
 HV2092.an estimated accuracy of +/- 6 seconds.
 HV2092
 HV2092.The orthometric height was determined by differential leveling and
 HV2092.adjusted by the NATIONAL GEODETIC SURVEY
 HV2092.in June 1991.
 HV2092
 HV2092.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2092.GEOID18 height accuracy estimate available here.
 HV2092
 HV2092.Click photographs - Photos may exist for this station.
 HV2092
 HV2092.The dynamic height is computed by dividing the NAVD 88
 HV2092.geopotential number by the normal gravity value computed on the
 HV2092.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2092.degrees latitude (g = 980.6199 gals.).
 HV2092
 HV2092.The modeled gravity was interpolated from observed gravity values.
 HV2092
 HV2092;                    North         East    Units  Estimated Accuracy
 HV2092;SPC MD       -   145,340.      384,070.      MT  (+/- 180 meters Scaled)
 HV2092
 HV2092_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ108163(NAD 83)
 HV2092
 HV2092                          SUPERSEDED SURVEY CONTROL
 HV2092
 HV2092  NGVD 29 (11/26/84)   47.191  (m)          154.83   (f) ADJUSTED    2 0
 HV2092
 HV2092.Superseded values are not recommended for survey control.
 HV2092
 HV2092.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2092.See file dsdata.pdf to determine how the superseded data were derived.
 HV2092
 HV2092_MARKER: DD = SURVEY DISK
 HV2092_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2092_SP_SET: AQUEDUCT
 HV2092_STAMPING: C 209
 HV2092_MARK LOGO: PBPP
 HV2092_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2092
 HV2092  HISTORY     - Date     Condition        Report By
 HV2092  HISTORY     - UNK      MONUMENTED       PBPP
 HV2092  HISTORY     - 1930     GOOD             PBPP
 HV2092  HISTORY     - 1958     GOOD             CGS
 HV2092  HISTORY     - 19950707 GOOD             USPSQD
 HV2092  HISTORY     - 20001106 GOOD             USPSQD
 HV2092
 HV2092                          STATION DESCRIPTION
 HV2092
 HV2092'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2092'5.2 MI NW FROM DALECARLIA.
 HV2092'IN MONTGOMERY COUNTY, 5.2 MILES NORTHWEST ALONG MAC ARTHUR
 HV2092'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2092'D.C., AT A CONCRETE GATE CHAMBER ON THE WASHINGTON AQUEDUCT, AND
 HV2092'IN THE TOP OF THE NORTHEAST CORNER.  A PUBLIC BUILDINGS AND
 HV2092'PUBLIC PARKS STANDARD DISK, STAMPED C 209.
 HV2092
 HV2092                          STATION RECOVERY (1958)
 HV2092
 HV2092'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV2092'RECOVERED IN GOOD CONDITION.
 HV2092
 HV2092                          STATION RECOVERY (1995)
 HV2092
 HV2092'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV2092'RECOVERED IN GOOD CONDITION.
 HV2092
 HV2092                          STATION RECOVERY (2000)
 HV2092
 HV2092'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2092'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2106 ***********************************************************************
 HV2106  DESIGNATION -  C 210 PBPP
 HV2106  PID         -  HV2106
 HV2106  STATE/COUNTY-  MD/MONTGOMERY
 HV2106  COUNTRY     -  US
 HV2106  USGS QUAD   -  FALLS CHURCH (2019)
 HV2106
 HV2106                         *CURRENT SURVEY CONTROL
 HV2106  ______________________________________________________________________
 HV2106* NAD 83(1993) POSITION- 38 58 41.41386(N) 077 12 06.22533(W)   ADJUSTED
 HV2106* NAVD 88 ORTHO HEIGHT -    48.00  (+/-2cm)      157.5   (feet) VERTCON3
 HV2106  ______________________________________________________________________
 HV2106  GEOID HEIGHT    -        -31.765 (meters)                     GEOID18
 HV2106  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 HV2106  HORZ ORDER      -  SECOND
 HV2106  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2106
 HV2106.The horizontal coordinates were established by classical geodetic methods
 HV2106.and adjusted by the National Geodetic Survey in November 1994.
 HV2106
 HV2106.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2106.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2106
 HV2106.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2106.GEOID18 height accuracy estimate available here.
 HV2106
 HV2106.The vertical order pertains to the NGVD 29 superseded value.
 HV2106
 HV2106.Click photographs - Photos may exist for this station.
 HV2106
 HV2106.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV2106
 HV2106. The following values were computed from the NAD 83(1993) position.
 HV2106
 HV2106;                    North         East     Units Scale Factor Converg.
 HV2106;SPC MD       -   145,602.232   382,520.415   MT  0.99995144   -0 07 35.8
 HV2106;SPC MD       -   477,696.66  1,254,985.73   sFT  0.99995144   -0 07 35.8
 HV2106;SPC VA N     - 2,146,373.332 3,612,491.742   MT  0.99996815   +0 48 37.0
 HV2106;SPC VA N     - 7,041,893.17 11,851,983.32   sFT  0.99996815   +0 48 37.0
 HV2106;UTM  18      - 4,316,659.800   309,279.934   MT  1.00004791   -1 23 07.3
 HV2106
 HV2106!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV2106!SPC MD       -   0.99999745  x   0.99995144  =   0.99994889
 HV2106!SPC VA N     -   0.99999745  x   0.99996815  =   0.99996560
 HV2106!UTM  18      -   0.99999745  x   1.00004791  =   1.00004536
 HV2106
 HV2106_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0927916659(NAD 83)
 HV2106
 HV2106                          SUPERSEDED SURVEY CONTROL
 HV2106
 HV2106  NAD 83(1991)-  38 58 41.41320(N)    077 12 06.22686(W) AD(       ) 2
 HV2106  NAD 83(1986)-  38 58 41.41320(N)    077 12 06.23619(W) AD(       ) 2
 HV2106  NAD 27      -  38 58 41.01300(N)    077 12 07.30400(W) AD(       ) 2
 HV2106  NGVD 29 (11/26/84)   48.227  (m)          158.22   (f) ADJUSTED    2 1
 HV2106
 HV2106.Superseded values are not recommended for survey control.
 HV2106
 HV2106.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2106.See file dsdata.pdf to determine how the superseded data were derived.
 HV2106
 HV2106_MARKER: DD = SURVEY DISK
 HV2106_SETTING: 80 = SET IN A BOULDER
 HV2106_STAMPING: C 210
 HV2106_MARK LOGO: PBPP
 HV2106_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2106+STABILITY: SURFACE MOTION
 HV2106
 HV2106  HISTORY     - Date     Condition        Report By
 HV2106  HISTORY     - 1930     MONUMENTED       PBPP
 HV2106  HISTORY     - 1930     GOOD             PBPP
 HV2106  HISTORY     - 1931     SEE DESCRIPTION  PBPP
 HV2106  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV2106  HISTORY     - 19950708 GOOD             USPSQD
 HV2106  HISTORY     - 20001106 GOOD             USPSQD
 HV2106
 HV2106                          STATION DESCRIPTION
 HV2106
 HV2106'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2106'STATION IS ON MARYLAND SIDE OF POTOMAC RIVER IN MONTGOMERY COUNTY
 HV2106'2.8 MILES W OF CABIN JOHN BRIDGE ON CONDUIT ROAD, 58 FEET N OF
 HV2106'CENTER LINE OF ROAD AND 13 FEET E OF W.A. STONE NO.31.  THE STATION
 HV2106'IS EASILY LOCATED BY A LARGE OUTCROPPING OF SHALE 10 FEET HIGH
 HV2106'AND 8 FEET WIDE AT BASE, ON N SIDE ROAD AND JUST SW OF STATION.
 HV2106'
 HV2106'THE STATION IS RE-LOCATED BY BISECTING THE DISTANCE (26.00)
 HV2106'BETWEEN TWO CONCRETE MONUMENT SET PARALLEL TO ROAD.  THE MONUMENT
 HV2106'ARE STANDARD BRASS DISKS SET IN 24-INCH TERRA COTTA PIPES FILLED
 HV2106'WITH CONCRETE.  THE UNDERGROUND MARKERS ARE BRASS PLUGS SET IN
 HV2106'6 INCHES OF CONCRETE.
 HV2106'
 HV2106'THE AZIMUTH MARK IS BRASS DISK SET IN TERRA COTTA PIPE 31 FEET
 HV2106'S OF CENTER LINE OF ROAD AND 334 FEET W OF HORSE TROUGH AT
 HV2106'INTERSECTION OF DIRT ROAD AND CONDUIT ROAD.
 HV2106'
 HV2106'BOTH STATION AND AZIMUTH MARK ARE ON U.S. RIGHT-OF-WAY.
 HV2106
 HV2106                          STATION RECOVERY (1930)
 HV2106
 HV2106'RECOVERY NOTE BY PUB BLDGS AND PARKS 1930
 HV2106'6.2 MI NW FROM DALECARLIA.
 HV2106'IN MONTGOMERY COUNTY, MARYLAND, 6.2 MILES NORTHWEST ALONG MAC ARTHUR
 HV2106'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2106'D.C., 3.1 MILES WEST OF CABIN JOHN BRIDGE, 1.7 MILES WEST OF OLD
 HV2106'WASHINGTON AQUEDUCT BRIDGE NO. 3, NEAR A LARGE SHALE OUTCROP NORTH
 HV2106'OF THE ROAD, 5 FEET NORTH OF THE ROAD, AND IN THE NORTH SIDE
 HV2106'OF A 7-FOOT BOULDER.  A PUBLIC BUILDINGS AND PUBLIC PARKS STANDARD
 HV2106'DISK.
 HV2106
 HV2106                          STATION RECOVERY (1931)
 HV2106
 HV2106'RECOVERY NOTE BY PUB BLDGS AND PARKS 1931
 HV2106'MONUMENTS ROADSIDE NO.1 AND NO.2 WERE DESTROYED, THE TREE USED AS
 HV2106'PART OF OBSERVING TOWER CUT DOWN AND A STANDARD P.B. AND P.P.
 HV2106'DISK SET IN CEMENT IN AN 8-INCH TERRA COTTA PIPE WAS PLACED AT
 HV2106'THE ACTUAL STATION AND STAMPED ROADSIDE I.
 HV2106'
 HV2106'FOR THE UNDERGROUND MARKER A STANDARD DISK STAMPED ROADSIDE 2
 HV2106'WAS SET IN ABOUT 8 INCHES OF CONCRETE.
 HV2106'
 HV2106'DISTANCE FROM STATION ROADSIDE TO ECCENTRIC STATION IS 21.012
 HV2106'METERS.
 HV2106
 HV2106                          STATION RECOVERY (1958)
 HV2106
 HV2106'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV2106'THE STATION WAS NOT RECOVERED.  A THOROUGH SEARCH WAS MADE AT THE
 HV2106'LOCATION DESCRIBED.  THE STATION IS BELIEVED TO HAVE BEEN DESTROYED
 HV2106'BY ROAD CONSTRUCTION.
 HV2106
 HV2106                          STATION RECOVERY (1995)
 HV2106
 HV2106'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV2106'RECOVERED IN GOOD CONDITION.
 HV2106
 HV2106                          STATION RECOVERY (2000)
 HV2106
 HV2106'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2106'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2107 ***********************************************************************
 HV2107  DESIGNATION -  C 211 PBPP
 HV2107  PID         -  HV2107
 HV2107  STATE/COUNTY-  MD/MONTGOMERY
 HV2107  COUNTRY     -  US
 HV2107  USGS QUAD   -  FALLS CHURCH (2019)
 HV2107
 HV2107                         *CURRENT SURVEY CONTROL
 HV2107  ______________________________________________________________________
 HV2107* NAD 83(1986) POSITION- 38 58 42.84   (N) 077 12 43.74   (W)   HD_HELD1
 HV2107* NAVD 88 ORTHO HEIGHT -    43.51  (+/-2cm)      142.7   (feet) VERTCON3
 HV2107  ______________________________________________________________________
 HV2107  GEOID HEIGHT    -        -31.755 (meters)                     GEOID18
 HV2107  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2107
 HV2107.The horizontal coordinates were determined by differentially corrected
 HV2107.hand held GPS observations or other comparable positioning techniques
 HV2107.and have an estimated accuracy of +/- 3 meters.
 HV2107
 HV2107.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2107.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2107
 HV2107.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2107.GEOID18 height accuracy estimate available here.
 HV2107
 HV2107.The vertical order pertains to the NGVD 29 superseded value.
 HV2107
 HV2107.Click photographs - Photos may exist for this station.
 HV2107
 HV2107;                    North         East    Units  Estimated Accuracy
 HV2107;SPC MD       -   145,648.3     381,617.6     MT  (+/- 3 meters HH1 GPS) 
 HV2107
 HV2107_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0837816725(NAD 83)
 HV2107
 HV2107                          SUPERSEDED SURVEY CONTROL
 HV2107
 HV2107  NGVD 29 (11/26/84)   43.740  (m)          143.50   (f) ADJUSTED    2 1
 HV2107
 HV2107.Superseded values are not recommended for survey control.
 HV2107
 HV2107.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2107.See file dsdata.pdf to determine how the superseded data were derived.
 HV2107
 HV2107_MARKER: DD = SURVEY DISK
 HV2107_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2107_SP_SET: CULVERT
 HV2107_STAMPING: C 211
 HV2107_MARK LOGO: PBPP
 HV2107_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2107
 HV2107  HISTORY     - Date     Condition        Report By
 HV2107  HISTORY     - UNK      MONUMENTED       PBPP
 HV2107  HISTORY     - 1930     GOOD             PBPP
 HV2107  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2107
 HV2107                          STATION DESCRIPTION
 HV2107
 HV2107'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2107'6.8 MI NW FROM DALCARLIA.
 HV2107'IN MONTGOMERY COUNTY, MARYLAND, 6.8 MILES NORTHWEST ALONG MAC ARTHUR
 HV2107'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALCARLIA,
 HV2107'D.C., AT WASHINGTON AQUEDUCT CULVERT NO. 6, AND IN THE SOUTHEAST
 HV2107'CORNER OF THE SOUTH HEADWALL.  A PUBLIC BUILDINGS AND PUBLIC
 HV2107'PARKS STANDARD DISK.
 HV2107
 HV2107                          STATION RECOVERY (2000)
 HV2107
 HV2107'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2107'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2108 ***********************************************************************
 HV2108  DESIGNATION -  C 212 PBPP
 HV2108  PID         -  HV2108
 HV2108  STATE/COUNTY-  MD/MONTGOMERY
 HV2108  COUNTRY     -  US
 HV2108  USGS QUAD   -  FALLS CHURCH (2019)
 HV2108
 HV2108                         *CURRENT SURVEY CONTROL
 HV2108  ______________________________________________________________________
 HV2108* NAD 83(1986) POSITION- 38 58 47.     (N) 077 13 13.     (W)   SCALED
 HV2108* NAVD 88 ORTHO HEIGHT -    42.78  (+/-2cm)      140.4   (feet) VERTCON3
 HV2108  ______________________________________________________________________
 HV2108  GEOID HEIGHT    -        -31.748 (meters)                     GEOID18
 HV2108  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2108
 HV2108.The horizontal coordinates were scaled from a map and have
 HV2108.an estimated accuracy of +/- 6 seconds.
 HV2108
 HV2108.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2108.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2108
 HV2108.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2108.GEOID18 height accuracy estimate available here.
 HV2108
 HV2108.The vertical order pertains to the NGVD 29 superseded value.
 HV2108
 HV2108.Click photographs - Photos may exist for this station.
 HV2108
 HV2108;                    North         East    Units  Estimated Accuracy
 HV2108;SPC MD       -   145,780.      380,910.      MT  (+/- 180 meters Scaled)
 HV2108
 HV2108_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ076168(NAD 83)
 HV2108
 HV2108                          SUPERSEDED SURVEY CONTROL
 HV2108
 HV2108  NGVD 29 (11/26/84)   43.015  (m)          141.13   (f) ADJUSTED    2 1
 HV2108
 HV2108.Superseded values are not recommended for survey control.
 HV2108
 HV2108.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2108.See file dsdata.pdf to determine how the superseded data were derived.
 HV2108
 HV2108_MARKER: DD = SURVEY DISK
 HV2108_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2108_SP_SET: CULVERT
 HV2108_STAMPING: C 212
 HV2108_MARK LOGO: PBPP
 HV2108_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2108
 HV2108  HISTORY     - Date     Condition        Report By
 HV2108  HISTORY     - UNK      MONUMENTED       PBPP
 HV2108  HISTORY     - 1930     GOOD             PBPP
 HV2108  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2108
 HV2108                          STATION DESCRIPTION
 HV2108
 HV2108'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2108'AT DALECARLIA.
 HV2108'IN MONTGOMERY COUNTY, MARYLAND, 7.3 MILES NORTHWEST ALONG MAC ARTHUR
 HV2108'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT
 HV2108'DALECARLIA, D.C., AT WASHINGTON AQUEDUCT CULVERT NO. 4, IN THE
 HV2108'TOP OF THE EAST END OF THE SOUTH HEADWALL, AND 0.5 FOOT FROM THE
 HV2108'OUTSIDE EDGE OF THE WALL.  A PUBLIC BUILDINGS AND PUBLIC PARKS
 HV2108'STANDARD DISK.
 HV2108
 HV2108                          STATION RECOVERY (2000)
 HV2108
 HV2108'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2108'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2112 ***********************************************************************
 HV2112  DESIGNATION -  C 213 PBPP
 HV2112  PID         -  HV2112
 HV2112  STATE/COUNTY-  MD/MONTGOMERY
 HV2112  COUNTRY     -  US
 HV2112  USGS QUAD   -  FALLS CHURCH (2019)
 HV2112
 HV2112                         *CURRENT SURVEY CONTROL
 HV2112  ______________________________________________________________________
 HV2112* NAD 83(1986) POSITION- 38 59 07.     (N) 077 13 35.     (W)   SCALED
 HV2112* NAVD 88 ORTHO HEIGHT -    68.13  (+/-2cm)      223.5   (feet) VERTCON3
 HV2112  ______________________________________________________________________
 HV2112  GEOID HEIGHT    -        -31.739 (meters)                     GEOID18
 HV2112  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2112
 HV2112.The horizontal coordinates were scaled from a map and have
 HV2112.an estimated accuracy of +/- 6 seconds.
 HV2112
 HV2112.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2112.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2112
 HV2112.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2112.GEOID18 height accuracy estimate available here.
 HV2112
 HV2112.The vertical order pertains to the NGVD 29 superseded value.
 HV2112
 HV2112.Click photographs - Photos may exist for this station.
 HV2112
 HV2112;                    North         East    Units  Estimated Accuracy
 HV2112;SPC MD       -   146,400.      380,390.      MT  (+/- 180 meters Scaled)
 HV2112
 HV2112_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ071175(NAD 83)
 HV2112
 HV2112                          SUPERSEDED SURVEY CONTROL
 HV2112
 HV2112  NGVD 29 (11/26/84)   68.360  (m)          224.28   (f) ADJUSTED    2 1
 HV2112
 HV2112.Superseded values are not recommended for survey control.
 HV2112
 HV2112.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2112.See file dsdata.pdf to determine how the superseded data were derived.
 HV2112
 HV2112_MARKER: DD = SURVEY DISK
 HV2112_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2112_SP_SET: FOUNDATION
 HV2112_STAMPING: C 213
 HV2112_MARK LOGO: PBPP
 HV2112_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2112
 HV2112  HISTORY     - Date     Condition        Report By
 HV2112  HISTORY     - UNK      MONUMENTED       PBPP
 HV2112  HISTORY     - 1930     GOOD             PBPP
 HV2112  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2112
 HV2112                          STATION DESCRIPTION
 HV2112
 HV2112'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2112'7.8 MI NW FROM DALECARLIA.
 HV2112'IN MONTGOMERY COUNTY, MARYLAND, 7.8 MILES NORTHWEST ALONG
 HV2112'MAC ARTHUR BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE
 HV2112'AT DALECARLIA, D.C., 0.2 MILE NORTH OF THE POINT WHERE THE ROAD
 HV2112'LEAVES THE AQUEDUCT, AT THE SOUTHWEST CORNER OF THE DAY HOUSE IN
 HV2112'1930, AND IN THE FACE OF THE CONCRETE FOUNDATION.  A PUBLIC
 HV2112'BUILDINGS AND PUBLIC PARKS STANDARD DISK, SET VERTICALLY.
 HV2112
 HV2112                          STATION RECOVERY (2000)
 HV2112
 HV2112'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2112'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2113 ***********************************************************************
 HV2113  DESIGNATION -  C 214
 HV2113  PID         -  HV2113
 HV2113  STATE/COUNTY-  MD/MONTGOMERY
 HV2113  COUNTRY     -  US
 HV2113  USGS QUAD   -  FALLS CHURCH (2019)
 HV2113
 HV2113                         *CURRENT SURVEY CONTROL
 HV2113  ______________________________________________________________________
 HV2113* NAD 83(1986) POSITION- 38 59 24.4    (N) 077 13 35.1    (W)   HD_HELD2
 HV2113* NAVD 88 ORTHO HEIGHT -    91.307 (meters)      299.56  (feet) ADJUSTED
 HV2113  ______________________________________________________________________
 HV2113  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 HV2113  DYNAMIC HEIGHT  -         91.259 (meters)      299.41  (feet) COMP
 HV2113  MODELED GRAVITY -    980,106.1   (mgal)                       NAVD 88
 HV2113
 HV2113  VERT ORDER      -  SECOND    CLASS 0
 HV2113
 HV2113.The horizontal coordinates were established by autonomous hand held GPS
 HV2113.observations and have an estimated accuracy of +/- 10 meters.
 HV2113
 HV2113.The orthometric height was determined by differential leveling and
 HV2113.adjusted by the NATIONAL GEODETIC SURVEY
 HV2113.in June 1991.
 HV2113
 HV2113.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2113.GEOID18 height accuracy estimate available here.
 HV2113
 HV2113.Click photographs - Photos may exist for this station.
 HV2113
 HV2113.The dynamic height is computed by dividing the NAVD 88
 HV2113.geopotential number by the normal gravity value computed on the
 HV2113.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2113.degrees latitude (g = 980.6199 gals.).
 HV2113
 HV2113.The modeled gravity was interpolated from observed gravity values.
 HV2113
 HV2113;                    North         East    Units  Estimated Accuracy
 HV2113;SPC MD       -   146,933.      380,385.      MT  (+/- 10 meters HH2 GPS)
 HV2113
 HV2113_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0717318037(NAD 83)
 HV2113
 HV2113                          SUPERSEDED SURVEY CONTROL
 HV2113
 HV2113  NGVD 29 (11/26/84)   91.544  (m)          300.34   (f) ADJUSTED    2 0
 HV2113
 HV2113.Superseded values are not recommended for survey control.
 HV2113
 HV2113.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2113.See file dsdata.pdf to determine how the superseded data were derived.
 HV2113
 HV2113_MARKER: DD = SURVEY DISK
 HV2113_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2113_STAMPING: C 214
 HV2113_MARK LOGO: PBPP
 HV2113_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2113+STABILITY: SURFACE MOTION
 HV2113_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2113+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2009
 HV2113
 HV2113  HISTORY     - Date     Condition        Report By
 HV2113  HISTORY     - UNK      MONUMENTED       PBPP
 HV2113  HISTORY     - 1930     GOOD             PBPP
 HV2113  HISTORY     - 1966     GOOD             CGS
 HV2113  HISTORY     - 19950707 MARK NOT FOUND   USPSQD
 HV2113  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2113  HISTORY     - 20050704 GOOD             GEOCAC
 HV2113  HISTORY     - 20090329 GOOD             NGS
 HV2113
 HV2113                          STATION DESCRIPTION
 HV2113
 HV2113'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2113'8.2 MI NW FROM DALECARLIA.
 HV2113'IN MONTGOMERY COUNTY, MARYLAND, 8.2 MILES NORTHWEST ALONG
 HV2113'MAC ARTHUR BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND
 HV2113'LINE AT DALECARLIA, D.C., 1.8 MILES EAST OF GREAT FALLS, 42.7 FEET
 HV2113'SOUTH OF THE CENTERLINE OF THE ROAD, AND 4.3 FEET NORTH OF STONE A
 HV2113'9.6.  A PUBLIC BUILDINGS AND PUBLIC PARKS STANDARD DISK, SET IN
 HV2113'THE TOP OF A CONCRETE-FILLED TERRA-COTTA PIPE.
 HV2113
 HV2113                          STATION RECOVERY (1966)
 HV2113
 HV2113'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 HV2113'RECOVERED IN GOOD CONDITION.
 HV2113
 HV2113                          STATION RECOVERY (1995)
 HV2113
 HV2113'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV2113'MARK NOT FOUND.
 HV2113
 HV2113                          STATION RECOVERY (2000)
 HV2113
 HV2113'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2113'MARK NOT FOUND.
 HV2113
 HV2113                          STATION RECOVERY (2005)
 HV2113
 HV2113'RECOVERY NOTE BY GEOCACHING 2005 (TAK)
 HV2113'FROM THE DISTRICT OF COLUMBIA, 8.2 MILES NORTHWEST ALONG MACARTHUR
 HV2113'BOULEVARD, 0.1 MILES NORTH ITS INTERSECTION WITH BELFAST ROAD. THE
 HV2113'MARK IS 42.7 FEET SOUTH OF THE CENTERLINE OF MACARTHUR BOULEVARD AND
 HV2113'4.3 FEET EAST OF A SQUARE STONE MARKED A96. IT IS A PUBLIC BUILDINGS
 HV2113'AND PUBLIC PARKS STANDARD DISK SET IN THE TOP OF A CONCRETE-FILLED
 HV2113'TERRA-COTTA PIPE.
 HV2113
 HV2113                          STATION RECOVERY (2009)
 HV2113
 HV2113'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 HV2113'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2114 ***********************************************************************
 HV2114  DESIGNATION -  C 215 PBPP
 HV2114  PID         -  HV2114
 HV2114  STATE/COUNTY-  MD/MONTGOMERY
 HV2114  COUNTRY     -  US
 HV2114  USGS QUAD   -  FALLS CHURCH (2019)
 HV2114
 HV2114                         *CURRENT SURVEY CONTROL
 HV2114  ______________________________________________________________________
 HV2114* NAD 83(1986) POSITION- 38 59 45.     (N) 077 13 54.     (W)   SCALED
 HV2114* NAVD 88 ORTHO HEIGHT -   116.29  (+/-2cm)      381.5   (feet) VERTCON3
 HV2114  ______________________________________________________________________
 HV2114  GEOID HEIGHT    -        -31.725 (meters)                     GEOID18
 HV2114  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2114
 HV2114.The horizontal coordinates were scaled from a map and have
 HV2114.an estimated accuracy of +/- 6 seconds.
 HV2114
 HV2114.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2114.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2114
 HV2114.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2114.GEOID18 height accuracy estimate available here.
 HV2114
 HV2114.The vertical order pertains to the NGVD 29 superseded value.
 HV2114
 HV2114.Click photographs - Photos may exist for this station.
 HV2114
 HV2114;                    North         East    Units  Estimated Accuracy
 HV2114;SPC MD       -   147,570.      379,930.      MT  (+/- 180 meters Scaled)
 HV2114
 HV2114_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ067186(NAD 83)
 HV2114
 HV2114                          SUPERSEDED SURVEY CONTROL
 HV2114
 HV2114  NGVD 29 (11/26/84)  116.520  (m)          382.28   (f) ADJUSTED    2 1
 HV2114
 HV2114.Superseded values are not recommended for survey control.
 HV2114
 HV2114.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2114.See file dsdata.pdf to determine how the superseded data were derived.
 HV2114
 HV2114_MARKER: DD = SURVEY DISK
 HV2114_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2114_SP_SET: CONCRETE BASE
 HV2114_STAMPING: C 215
 HV2114_MARK LOGO: PBPP
 HV2114_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2114
 HV2114  HISTORY     - Date     Condition        Report By
 HV2114  HISTORY     - UNK      MONUMENTED       PBPP
 HV2114  HISTORY     - 1930     GOOD             PBPP
 HV2114  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2114
 HV2114                          STATION DESCRIPTION
 HV2114
 HV2114'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2114'8.7 MI NW FROM DALECARLIA.
 HV2114'IN MONTGOMERY COUNTY, MARYLAND, 8.7 MILES NORTHWEST ALONG
 HV2114'MAC ARTHUR BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND
 HV2114'LINE AT DALECARLIA, D.C., 1.3 MILES EAST OF GREAT FALLS, AT THE
 HV2114'JUNCTION OF STATE HIGHWAY 189, AT AN OLD GOLD MINE, AT THE
 HV2114'NORTHWEST LEG OF THE WATER TANK, AND IN THE TOP OF THE EAST
 HV2114'CORNER OF THE CONCRETE BASE.  A PUBLIC BUILDINGS AND PUBLIC PARKS
 HV2114'STANDARD DISK.
 HV2114
 HV2114                          STATION RECOVERY (2000)
 HV2114
 HV2114'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2114'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2116 ***********************************************************************
 HV2116  DESIGNATION -  C 216
 HV2116  PID         -  HV2116
 HV2116  STATE/COUNTY-  MD/MONTGOMERY
 HV2116  COUNTRY     -  US
 HV2116  USGS QUAD   -  FALLS CHURCH (2019)
 HV2116
 HV2116                         *CURRENT SURVEY CONTROL
 HV2116  ______________________________________________________________________
 HV2116* NAD 83(1986) POSITION- 38 59 45.4    (N) 077 14 15.3    (W)   HD_HELD2
 HV2116* NAVD 88 ORTHO HEIGHT -   108.323 (meters)      355.39  (feet) ADJUSTED
 HV2116  ______________________________________________________________________
 HV2116  GEOID HEIGHT    -        -31.724 (meters)                     GEOID18
 HV2116  DYNAMIC HEIGHT  -        108.267 (meters)      355.21  (feet) COMP
 HV2116  MODELED GRAVITY -    980,109.7   (mgal)                       NAVD 88
 HV2116
 HV2116  VERT ORDER      -  SECOND    CLASS 0
 HV2116
 HV2116.The horizontal coordinates were established by autonomous hand held GPS
 HV2116.observations and have an estimated accuracy of +/- 10 meters.
 HV2116
 HV2116.The orthometric height was determined by differential leveling and
 HV2116.adjusted by the NATIONAL GEODETIC SURVEY
 HV2116.in June 1991.
 HV2116
 HV2116.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2116.GEOID18 height accuracy estimate available here.
 HV2116
 HV2116.Click photographs - Photos may exist for this station.
 HV2116
 HV2116.The dynamic height is computed by dividing the NAVD 88
 HV2116.geopotential number by the normal gravity value computed on the
 HV2116.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2116.degrees latitude (g = 980.6199 gals.).
 HV2116
 HV2116.The modeled gravity was interpolated from observed gravity values.
 HV2116
 HV2116;                    North         East    Units  Estimated Accuracy
 HV2116;SPC MD       -   147,583.      379,419.      MT  (+/- 10 meters HH2 GPS)
 HV2116
 HV2116_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0622218708(NAD 83)
 HV2116
 HV2116                          SUPERSEDED SURVEY CONTROL
 HV2116
 HV2116  NGVD 29 (11/26/84)  108.563  (m)          356.18   (f) ADJUSTED    2 0
 HV2116
 HV2116.Superseded values are not recommended for survey control.
 HV2116
 HV2116.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2116.See file dsdata.pdf to determine how the superseded data were derived.
 HV2116
 HV2116_MARKER: DD = SURVEY DISK
 HV2116_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2116_SP_SET: BUILDING
 HV2116_STAMPING: C 216
 HV2116_MARK LOGO: PBPP
 HV2116_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2116_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2116+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2009
 HV2116
 HV2116  HISTORY     - Date     Condition        Report By
 HV2116  HISTORY     - UNK      MONUMENTED       PBPP
 HV2116  HISTORY     - 1930     GOOD             PBPP
 HV2116  HISTORY     - 1966     GOOD             CGS
 HV2116  HISTORY     - 19950707 MARK NOT FOUND   USPSQD
 HV2116  HISTORY     - 20060318 GOOD             GEOCAC
 HV2116  HISTORY     - 20090329 GOOD             NGS
 HV2116  HISTORY     - 20110315 GOOD             GEOCAC
 HV2116
 HV2116                          STATION DESCRIPTION
 HV2116
 HV2116'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2116'AT DALECARLIA.
 HV2116'IN MONTGOMERY COUNTY, MARYLAND, 9.1 MILES NORTHWEST ALONG
 HV2116'MAC ARTHUR BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND
 HV2116'LINE AT DALECARLIA, D.C., 0.9 MILE EAST OF GREAT FALLS, ON THE
 HV2116'NORTHEAST SIDE OF THE ROAD, AT A ONE-STORY BRICK BUILDING WITH
 HV2116'TRIPLE FRONT DOORS (OWNED IN 1930 BY C.C. DANGLER), IN THE
 HV2116'NORTHWEST WALL, 2 FEET NORTHEAST OF THE WEST CORNER, AND ABOUT 6
 HV2116'INCHES ABOVE THE GROUND.  A PUBLIC BUILDINGS AND PUBLIC PARKS
 HV2116'STANDARD DISK, SET VERTICALLY.
 HV2116
 HV2116                          STATION RECOVERY (1966)
 HV2116
 HV2116'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 HV2116'RECOVERED IN GOOD CONDITION.
 HV2116
 HV2116                          STATION RECOVERY (1995)
 HV2116
 HV2116'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV2116'MARK NOT FOUND.
 HV2116
 HV2116                          STATION RECOVERY (2006)
 HV2116
 HV2116'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 HV2116'STATION DISK FOUND GENERALLY AS DESCRIBED EXCEPT THAT DISK IS NOW AT
 HV2116'GROUND LEVEL, NOT 6 INCHES ABOVE. BUILDING IS NOW A VFW POST.
 HV2116
 HV2116                          STATION RECOVERY (2009)
 HV2116
 HV2116'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 HV2116'RECOVERED IN GOOD CONDITION.
 HV2116
 HV2116                          STATION RECOVERY (2011)
 HV2116
 HV2116'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 HV2116'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2111 ***********************************************************************
 HV2111  DESIGNATION -  C 220
 HV2111  PID         -  HV2111
 HV2111  STATE/COUNTY-  MD/MONTGOMERY
 HV2111  COUNTRY     -  US
 HV2111  USGS QUAD   -  FALLS CHURCH (2019)
 HV2111
 HV2111                         *CURRENT SURVEY CONTROL
 HV2111  ______________________________________________________________________
 HV2111* NAD 83(1986) POSITION- 38 59 31.17   (N) 077 14 37.98   (W)   HD_HELD1
 HV2111* NAVD 88 ORTHO HEIGHT -    46.35  (+/-2cm)      152.1   (feet) VERTCON3
 HV2111  ______________________________________________________________________
 HV2111  GEOID HEIGHT    -        -31.727 (meters)                     GEOID18
 HV2111  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2111
 HV2111.The horizontal coordinates were determined by differentially corrected
 HV2111.hand held GPS observations or other comparable positioning techniques
 HV2111.and have an estimated accuracy of +/- 3 meters.
 HV2111
 HV2111.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2111.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2111
 HV2111.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2111.GEOID18 height accuracy estimate available here.
 HV2111
 HV2111.The vertical order pertains to the NGVD 29 superseded value.
 HV2111
 HV2111.Click photographs - Photos may exist for this station.
 HV2111
 HV2111;                    North         East    Units  Estimated Accuracy
 HV2111;SPC MD       -   147,145.4     378,871.9     MT  (+/- 3 meters HH1 GPS) 
 HV2111
 HV2111_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0566518282(NAD 83)
 HV2111
 HV2111                          SUPERSEDED SURVEY CONTROL
 HV2111
 HV2111  NGVD 29 (11/26/84)   46.587  (m)          152.84   (f) ADJUSTED    2 1
 HV2111
 HV2111.Superseded values are not recommended for survey control.
 HV2111
 HV2111.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2111.See file dsdata.pdf to determine how the superseded data were derived.
 HV2111
 HV2111_MARKER: DD = SURVEY DISK
 HV2111_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2111_SP_SET: AQUEDUCT
 HV2111_STAMPING: C 220
 HV2111_MARK LOGO: PBPP
 HV2111_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2111
 HV2111  HISTORY     - Date     Condition        Report By
 HV2111  HISTORY     - UNK      MONUMENTED       PBPP
 HV2111  HISTORY     - 1930     GOOD             PBPP
 HV2111
 HV2111                          STATION DESCRIPTION
 HV2111
 HV2111'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2111'0.6 MI S FROM GREAT FALLS.
 HV2111'0.6 MILE SOUTH ALONG THE ABANDONED CHESAPEAKE AND OHIO CANAL
 HV2111'FROM GREAT FALLS, MONTGOMERY COUNTY, 350 YARDS BELOW THE FIRST
 HV2111'AQUEDUCT TUNNEL, OPPOSITE THE FIFTH LOCK BELOW THE GREAT FALLS
 HV2111'HOTEL (LOCK 16), NEAR AN OLD TWO-AND-ONE-HALF-STORY STONE HOUSE,
 HV2111'AT THE REINFORCED-CONCRETE SECTION OF THE NEW WASHINGTON AQUEDUCT,
 HV2111'AND IN THE NORTHWEST CORNER.  A PUBLIC BUILDINGS AND PUBLIC PARKS
 HV2111'STANDARD DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2110 ***********************************************************************
 HV2110  DESIGNATION -  C 221 PBPP
 HV2110  PID         -  HV2110
 HV2110  STATE/COUNTY-  MD/MONTGOMERY
 HV2110  COUNTRY     -  US
 HV2110  USGS QUAD   -  FALLS CHURCH (2019)
 HV2110
 HV2110                         *CURRENT SURVEY CONTROL
 HV2110  ______________________________________________________________________
 HV2110* NAD 83(1986) POSITION- 38 59 06.     (N) 077 14 13.     (W)   SCALED
 HV2110* NAVD 88 ORTHO HEIGHT -    45.92  (+/-2cm)      150.7   (feet) VERTCON3
 HV2110  ______________________________________________________________________
 HV2110  GEOID HEIGHT    -        -31.735 (meters)                     GEOID18
 HV2110  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2110
 HV2110.The horizontal coordinates were scaled from a map and have
 HV2110.an estimated accuracy of +/- 6 seconds.
 HV2110
 HV2110.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2110.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2110
 HV2110.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2110.GEOID18 height accuracy estimate available here.
 HV2110
 HV2110.The vertical order pertains to the NGVD 29 superseded value.
 HV2110
 HV2110.Click photographs - Photos may exist for this station.
 HV2110
 HV2110;                    North         East    Units  Estimated Accuracy
 HV2110;SPC MD       -   146,370.      379,470.      MT  (+/- 180 meters Scaled)
 HV2110
 HV2110_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ062174(NAD 83)
 HV2110
 HV2110                          SUPERSEDED SURVEY CONTROL
 HV2110
 HV2110  NGVD 29 (11/26/84)   46.158  (m)          151.44   (f) ADJUSTED    2 1
 HV2110
 HV2110.Superseded values are not recommended for survey control.
 HV2110
 HV2110.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2110.See file dsdata.pdf to determine how the superseded data were derived.
 HV2110
 HV2110_MARKER: DD = SURVEY DISK
 HV2110_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2110_SP_SET: ABUTMENT
 HV2110_STAMPING: C 221
 HV2110_MARK LOGO: PBPP
 HV2110_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2110
 HV2110  HISTORY     - Date     Condition        Report By
 HV2110  HISTORY     - UNK      MONUMENTED       PBPP
 HV2110  HISTORY     - 1930     GOOD             MDBCSM
 HV2110
 HV2110                          STATION DESCRIPTION
 HV2110
 HV2110'DESCRIBED BY MD BUR SURV AND MAPS 1930
 HV2110'1.2 MI SE FROM GREAT FALLS.
 HV2110'1.2 MILES SOUTHEAST ALONG A SERVICE ROAD ON THE TOP OF THE
 HV2110'WASHINGTON AQUEDUCT FROM GREAT FALLS, MONTGOMERY COUNTY, 0.7 MILE
 HV2110'WEST OF THE POINT WHERE THE AQUEDUCT JOINS MAC ARTHUR BOULEVARD
 HV2110'NEAR OLD BRIDGE NO. 1, AT THE NEW AQUEDUCT BRIDGE ADJOINING THE
 HV2110'OLD ONE, AND IN THE TOP OF THE SOUTH ABUTMENT.  A PUBLIC BUILDINGS
 HV2110'AND PUBLIC PARKS STANDARD DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2097 ***********************************************************************
 HV2097  DESIGNATION -  C 223=CARDEROCK PBPP
 HV2097  PID         -  HV2097
 HV2097  STATE/COUNTY-  MD/MONTGOMERY
 HV2097  COUNTRY     -  US
 HV2097  USGS QUAD   -  FALLS CHURCH (2019)
 HV2097
 HV2097                         *CURRENT SURVEY CONTROL
 HV2097  ______________________________________________________________________
 HV2097* NAD 83(1993) POSITION- 38 58 34.26260(N) 077 11 18.82103(W)   ADJUSTED
 HV2097* NAVD 88 ORTHO HEIGHT -    46.27  (+/-2cm)      151.8   (feet) VERTCON3
 HV2097  ______________________________________________________________________
 HV2097  GEOID HEIGHT    -        -31.780 (meters)                     GEOID18
 HV2097  LAPLACE CORR    -         -1.95  (seconds)                    DEFLEC18
 HV2097  HORZ ORDER      -  SECOND
 HV2097  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2097
 HV2097.The horizontal coordinates were established by classical geodetic methods
 HV2097.and adjusted by the National Geodetic Survey in November 1994.
 HV2097
 HV2097.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2097.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2097
 HV2097.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2097.GEOID18 height accuracy estimate available here.
 HV2097
 HV2097.The vertical order pertains to the NGVD 29 superseded value.
 HV2097
 HV2097.Click photographs - Photos may exist for this station.
 HV2097
 HV2097.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV2097
 HV2097. The following values were computed from the NAD 83(1993) position.
 HV2097
 HV2097;                    North         East     Units Scale Factor Converg.
 HV2097;SPC MD       -   145,379.277   383,660.936   MT  0.99995138   -0 07 06.1
 HV2097;SPC MD       -   476,965.18  1,258,727.59   sFT  0.99995138   -0 07 06.1
 HV2097;SPC VA N     - 2,146,169.052 3,613,635.776   MT  0.99996794   +0 49 06.6
 HV2097;SPC VA N     - 7,041,222.96 11,855,736.71   sFT  0.99996794   +0 49 06.6
 HV2097;UTM  18      - 4,316,411.822   310,415.389   MT  1.00004259   -1 22 37.2
 HV2097
 HV2097!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV2097!SPC MD       -   0.99999773  x   0.99995138  =   0.99994911
 HV2097!SPC VA N     -   0.99999773  x   0.99996794  =   0.99996567
 HV2097!UTM  18      -   0.99999773  x   1.00004259  =   1.00004032
 HV2097
 HV2097:                Primary Azimuth Mark                     Grid Az
 HV2097:SPC MD       -  QUARRY PB PP 1930                        098 50 29.7
 HV2097:SPC VA N     -  QUARRY PB PP 1930                        097 54 17.0
 HV2097:UTM  18      -  QUARRY PB PP 1930                        100 06 00.8
 HV2097
 HV2097_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1041516411(NAD 83)
 HV2097
 HV2097|---------------------------------------------------------------------|
 HV2097| PID    Reference Object                     Distance      Geod. Az  |
 HV2097|                                                           dddmmss.s |
 HV2097| HV4847 QUARRY PB PP 1930                   APPROX. 1.3 KM 0984323.6 |
 HV2097|---------------------------------------------------------------------|
 HV2097
 HV2097                          SUPERSEDED SURVEY CONTROL
 HV2097
 HV2097  NAD 83(1991)-  38 58 34.26187(N)    077 11 18.82259(W) AD(       ) 2
 HV2097  NAD 83(1986)-  38 58 34.26186(N)    077 11 18.83193(W) AD(       ) 2
 HV2097  NAD 27      -  38 58 33.86200(N)    077 11 19.90300(W) AD(       ) 2
 HV2097  NGVD 29 (11/26/84)   46.501  (m)          152.56   (f) ADJUSTED    2 1
 HV2097
 HV2097.Superseded values are not recommended for survey control.
 HV2097
 HV2097.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2097.See file dsdata.pdf to determine how the superseded data were derived.
 HV2097
 HV2097_MARKER: DD = SURVEY DISK
 HV2097_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2097_STAMPING: C 223 CARDEROCK
 HV2097_MARK LOGO: PBPP
 HV2097_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2097+STABILITY: SURFACE MOTION
 HV2097
 HV2097  HISTORY     - Date     Condition        Report By
 HV2097  HISTORY     - 1930     MONUMENTED       PBPP
 HV2097  HISTORY     - 1930     GOOD             PBPP
 HV2097  HISTORY     - 1944     GOOD             CGS
 HV2097  HISTORY     - 1956     GOOD             CGS
 HV2097  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2097
 HV2097                          STATION DESCRIPTION
 HV2097
 HV2097'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2097'STATION IS ON MARYLAND SIDE OF POTOMAC RIVER IN MONTGOMERY
 HV2097'COUNTY.  THIS STATION IS ON S SIDE OF CONDUIT ROAD, 2.1 MILES W
 HV2097'OF CABIN JOHN BRIDGE AND 0.2 MILE W OF LARGE WATER GATES IN
 HV2097'MIDDLE OF CONDUIT ROAD.  THE STATION IS 165 FEET W OF AN OPEN
 HV2097'IRRIGATION DITCH THAT EXTENDS BACK FROM ROAD ABOUT 700 FEET AND
 HV2097'AT RIGHT ANGLES TO IT.  THE DITCH IS LINED WITH A DOUBLE ROW OF
 HV2097'YOUNG TREES.
 HV2097'
 HV2097'THE STATION IS MARKED WITH A STANDARD P.B. AND P.P. BRASS DISK
 HV2097'SET IN 24-INCH TERRA COTTA PIPE AND MARKED UNDERGROUND WITH A
 HV2097'2-INCH SCREW SET IN 6 INCHES OF CONCRETE.
 HV2097'
 HV2097'THE AZIMUTH MARK IS A STANDARD P.B. AND P.P. BRASS DISK SET IN A
 HV2097'TERRA COTTA PIPE FILLED WITH CONCRETE, 2663.48 FEET W OF STATION
 HV2097'SET ON S SIDE OF CONDUIT ROAD, JUST OPPOSITE CARDER ROCK GOAT FARM.
 HV2097'
 HV2097'STATION AND AZIMUTH ARE ON U.S. RIGHT-OF-WAY.
 HV2097
 HV2097                          STATION RECOVERY (1930)
 HV2097
 HV2097'RECOVERY NOTE BY PUB BLDGS AND PARKS 1930
 HV2097'5.4 MI NW FROM DALECARLIA.
 HV2097'IN MONTGOMERY COUNTY, 5.4 MILES NORTHWEST ALONG MAC ARTHUR
 HV2097'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2097'D.C., 0.2 MILE WEST OF A CONCRETE GATE CHAMBER ON THE WASHINGTON
 HV2097'AQUEDUCT, NEAR THE U.S. NAVY MODEL BASIN, 165 FEET WEST OF AN
 HV2097'OPEN DITCH BORDERED BY A DOUBLE ROW OF TREES, AND 27 FEET SOUTH
 HV2097'OF THE CENTERLINE OF THE ROAD.  A PUBLIC BUILDINGS AND PUBLIC
 HV2097'PARKS STANDARD TRIANGULATION-STATION DISK, STAMPED C 223 CARDEROCK
 HV2097'AND SET IN THE TOP OF A CONCRETE-FILLED 24-INCH TERRA-COTTA PIPE.
 HV2097
 HV2097                          STATION RECOVERY (1944)
 HV2097
 HV2097'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944
 HV2097'RECOVERED IN GOOD CONDITION.
 HV2097
 HV2097                          STATION RECOVERY (1956)
 HV2097
 HV2097'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (MLD)
 HV2097'THE STATION AND AZIMUTH MARK WERE RECOVERED AND FOUND TO BE IN
 HV2097'GOOD CONDITION.  THE PREVIOUS DESCRIPTION IS ADEQUATE.
 HV2097'
 HV2097'THE DISTANCE BETWEEN THE STATION AND THE AZIMUTH MARK WAS CHECKED
 HV2097'AND VERIFIED WITH A 300-FT. TAPE.
 HV2097
 HV2097                          STATION RECOVERY (2000)
 HV2097
 HV2097'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2097'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2082 ***********************************************************************
 HV2082  DESIGNATION -  C 224
 HV2082  PID         -  HV2082
 HV2082  STATE/COUNTY-  MD/MONTGOMERY
 HV2082  COUNTRY     -  US
 HV2082  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2082
 HV2082                         *CURRENT SURVEY CONTROL
 HV2082  ______________________________________________________________________
 HV2082* NAD 83(1986) POSITION- 38 56 57.4    (N) 077 07 30.2    (W)   HD_HELD2
 HV2082* NAVD 88 ORTHO HEIGHT -    44.825 (meters)      147.06  (feet) ADJUSTED
 HV2082  ______________________________________________________________________
 HV2082  GEOID HEIGHT    -        -31.884 (meters)                     GEOID18
 HV2082  DYNAMIC HEIGHT  -         44.801 (meters)      146.98  (feet) COMP
 HV2082  MODELED GRAVITY -    980,093.7   (mgal)                       NAVD 88
 HV2082
 HV2082  VERT ORDER      -  THIRD
 HV2082
 HV2082.The horizontal coordinates were established by autonomous hand held GPS
 HV2082.observations and have an estimated accuracy of +/- 10 meters.
 HV2082
 HV2082.The orthometric height was determined by differential leveling and
 HV2082.adjusted by the NATIONAL GEODETIC SURVEY
 HV2082.in September 2004.
 HV2082
 HV2082.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2082.GEOID18 height accuracy estimate available here.
 HV2082
 HV2082.Click photographs - Photos may exist for this station.
 HV2082
 HV2082.The dynamic height is computed by dividing the NAVD 88
 HV2082.geopotential number by the normal gravity value computed on the
 HV2082.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2082.degrees latitude (g = 980.6199 gals.).
 HV2082
 HV2082.The modeled gravity was interpolated from observed gravity values.
 HV2082
 HV2082;                    North         East    Units  Estimated Accuracy
 HV2082;SPC MD       -   142,383.      389,160.      MT  (+/- 10 meters HH2 GPS)
 HV2082
 HV2082_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1584713295(NAD 83)
 HV2082
 HV2082                          SUPERSEDED SURVEY CONTROL
 HV2082
 HV2082  NGVD 29 (11/26/84)   45.047  (m)          147.79   (f) ADJUSTED    2 1
 HV2082
 HV2082.Superseded values are not recommended for survey control.
 HV2082
 HV2082.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2082.See file dsdata.pdf to determine how the superseded data were derived.
 HV2082
 HV2082_MARKER: DD = SURVEY DISK
 HV2082_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2082_SP_SET: AQUEDUCT
 HV2082_STAMPING: C 224
 HV2082_MARK LOGO: PBPP
 HV2082_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV2082_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2082_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2082+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2011
 HV2082
 HV2082  HISTORY     - Date     Condition        Report By
 HV2082  HISTORY     - UNK      MONUMENTED       PBPP
 HV2082  HISTORY     - 1930     GOOD             PBPP
 HV2082  HISTORY     - 19920129 GOOD             MSI
 HV2082  HISTORY     - 20110829 GOOD             NGS
 HV2082  HISTORY     - 2019     GOOD             GEOCAC
 HV2082
 HV2082                          STATION DESCRIPTION
 HV2082
 HV2082'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2082'1 MI NW FROM DALECARLIA.
 HV2082'IN MONTGOMERY COUNTY, MARYLAND, ABOUT 1 MILE NORTHWEST ALONG
 HV2082'MAC ARTHUR BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE
 HV2082'AT DALECARLIA, D.C., ON THE SOUTHWEST SIDE OF THE ROAD, 55 FEET
 HV2082'SOUTHEAST OF A BRICK BREATHER PIPE ON THE OLD WASHINGTON AQUEDUCT,
 HV2082'AND IN THE SOUTHWEST CORNER OF A REINFORCED CONCRETE SECTION OF THE
 HV2082'AQUEDUCT.  A PUBLIC BUILDINGS AND PUBLIC PARKS STANDARD DISK.
 HV2082
 HV2082                          STATION RECOVERY (1992)
 HV2082
 HV2082'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV2082'RECOVERED IN GOOD CONDITION.
 HV2082
 HV2082                          STATION RECOVERY (2011)
 HV2082
 HV2082'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 HV2082'RECOVERED IN GOOD CONDITION.
 HV2082
 HV2082                          STATION RECOVERY (2019)
 HV2082
 HV2082'RECOVERY NOTE BY GEOCACHING 2019
 HV2082'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2079 ***********************************************************************
 HV2079  DESIGNATION -  C 226 PBPP
 HV2079  PID         -  HV2079
 HV2079  STATE/COUNTY-  MD/MONTGOMERY
 HV2079  COUNTRY     -  US
 HV2079  USGS QUAD   -  WASHINGTON WEST (2016)
 HV2079
 HV2079                         *CURRENT SURVEY CONTROL
 HV2079  ______________________________________________________________________
 HV2079* NAD 83(1986) POSITION- 38 57 10.     (N) 077 06 10.     (W)   SCALED
 HV2079* NAVD 88 ORTHO HEIGHT -    74.59  (+/-2cm)      244.7   (feet) VERTCON3
 HV2079  ______________________________________________________________________
 HV2079  GEOID HEIGHT    -        -31.904 (meters)                     GEOID18
 HV2079  VERT ORDER      -  FIRST     CLASS II (See Below)
 HV2079
 HV2079.The horizontal coordinates were scaled from a map and have
 HV2079.an estimated accuracy of +/- 6 seconds.
 HV2079
 HV2079.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2079.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2079
 HV2079.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2079.GEOID18 height accuracy estimate available here.
 HV2079
 HV2079.The vertical order pertains to the NGVD 29 superseded value.
 HV2079
 HV2079.Click photographs - Photos may exist for this station.
 HV2079
 HV2079;                    North         East    Units  Estimated Accuracy
 HV2079;SPC MD       -   142,770.      391,090.      MT  (+/- 180 meters Scaled)
 HV2079
 HV2079_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ177136(NAD 83)
 HV2079
 HV2079                          SUPERSEDED SURVEY CONTROL
 HV2079
 HV2079  NGVD 29 (11/26/84)   74.811  (m)          245.44   (f) ADJUSTED    1 2
 HV2079
 HV2079.Superseded values are not recommended for survey control.
 HV2079
 HV2079.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2079.See file dsdata.pdf to determine how the superseded data were derived.
 HV2079
 HV2079_MARKER: DD = SURVEY DISK
 HV2079_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV2079_SP_SET: FOUNDATION
 HV2079_STAMPING: C 266
 HV2079_MARK LOGO: PBPP
 HV2079_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV2079
 HV2079  HISTORY     - Date     Condition        Report By
 HV2079  HISTORY     - UNK      MONUMENTED       PBPP
 HV2079  HISTORY     - 1930     GOOD             PBPP
 HV2079
 HV2079                          STATION DESCRIPTION
 HV2079
 HV2079'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2079'AT DALECARLIA.
 HV2079'IN MONTGOMERY COUNTY, MARYLAND, NORTHWEST ALONG MASSACHUSETTS
 HV2079'AVENUE EXTENDED FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT
 HV2079'DALECARLIA, D.C., AT THE TOP OF A HILL ABOUT 200 FEET NORTH OF
 HV2079'MASSACHUSETTS AVENUE, AT THE TWO-STORY FRAMEHOUSE BELONGING
 HV2079'IN 1930 TO JAMES E. COLLINS, AND IN THE NORTH SIDE OF THE
 HV2079'CONCRETE-BLOCK FOUNDATION.  A PUBLIC BUILDINGS AND PUBLIC PARKS
 HV2079'STANDARD DISK, SET VERTICALLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2101 ***********************************************************************
 HV2101  DESIGNATION -  C 227
 HV2101  PID         -  HV2101
 HV2101  STATE/COUNTY-  MD/MONTGOMERY
 HV2101  COUNTRY     -  US
 HV2101  USGS QUAD   -  FALLS CHURCH (2019)
 HV2101
 HV2101                         *CURRENT SURVEY CONTROL
 HV2101  ______________________________________________________________________
 HV2101* NAD 83(1986) POSITION- 38 58 12.93   (N) 077 11 22.14   (W)   HD_HELD1
 HV2101* NAVD 88 ORTHO HEIGHT -    30.01  (+/-2cm)       98.5   (feet) VERTCON3
 HV2101  ______________________________________________________________________
 HV2101  GEOID HEIGHT    -        -31.786 (meters)                     GEOID18
 HV2101  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2101
 HV2101.The horizontal coordinates were determined by differentially corrected
 HV2101.hand held GPS observations or other comparable positioning techniques
 HV2101.and have an estimated accuracy of +/- 3 meters.
 HV2101
 HV2101.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2101.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2101
 HV2101.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2101.GEOID18 height accuracy estimate available here.
 HV2101
 HV2101.The vertical order pertains to the NGVD 29 superseded value.
 HV2101
 HV2101.Click photographs - Photos may exist for this station.
 HV2101
 HV2101;                    North         East    Units  Estimated Accuracy
 HV2101;SPC MD       -   144,721.6     383,579.7     MT  (+/- 3 meters HH1 GPS) 
 HV2101
 HV2101_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1031915756(NAD 83)
 HV2101
 HV2101                          SUPERSEDED SURVEY CONTROL
 HV2101
 HV2101  NGVD 29 (11/26/84)   30.240  (m)           99.21   (f) ADJUSTED    2 1
 HV2101
 HV2101.Superseded values are not recommended for survey control.
 HV2101
 HV2101.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2101.See file dsdata.pdf to determine how the superseded data were derived.
 HV2101
 HV2101_MARKER: DD = SURVEY DISK
 HV2101_SETTING: 66 = SET IN ROCK OUTCROP
 HV2101_STAMPING: C 227
 HV2101_MARK LOGO: PBPP
 HV2101_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 HV2101+STABILITY: POSITION/ELEVATION WELL
 HV2101_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2101+SATELLITE: SATELLITE OBSERVATIONS - July 03, 2005
 HV2101
 HV2101  HISTORY     - Date     Condition        Report By
 HV2101  HISTORY     - UNK      MONUMENTED       PBPP
 HV2101  HISTORY     - 1930     GOOD             WSSC
 HV2101  HISTORY     - 1944     GOOD             CGS
 HV2101  HISTORY     - 19950709 MARK NOT FOUND   USPSQD
 HV2101  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV2101  HISTORY     - 20050703 GOOD             GEOCAC
 HV2101
 HV2101                          STATION DESCRIPTION
 HV2101
 HV2101'DESCRIBED BY WASH SUBURB SAN COMM 1930
 HV2101'5.4 MI NW FROM DALECARLIA.
 HV2101'IN MONTGOMERY COUNTY, 5.4 MILES NORTHWEST ALONG MAC ARTHUR
 HV2101'BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND LINE AT DALECARLIA,
 HV2101'D.C., THENCE 0.4 MILE SOUTH TO THE ABANDONED CHESAPEAKE AND OHIO
 HV2101'CANAL, 0.5 MILE WEST OF LOCK 14, OPPOSITE THE END OF THE MAIN
 HV2101'ROAD THROUGH THE CARDEROCK SUBDIVISION, 117 YARDS SOUTH OF THE
 HV2101'CANAL, AT THE EDGE OF THE HIGHWATER BED OF POTOMAC RIVER, AND
 HV2101'IN THE HIGH POINT OF A ROCK OUTCROP.  A PUBLIC BUILDINGS AND
 HV2101'PUBLIC PARKS STANDARD DISK, STAMPED C 227.
 HV2101
 HV2101                          STATION RECOVERY (1944)
 HV2101
 HV2101'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944
 HV2101'RECOVERED IN GOOD CONDITION.
 HV2101
 HV2101                          STATION RECOVERY (1995)
 HV2101
 HV2101'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV2101'MARK NOT FOUND.
 HV2101
 HV2101                          STATION RECOVERY (2000)
 HV2101
 HV2101'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV2101'MARK NOT FOUND.
 HV2101
 HV2101                          STATION RECOVERY (2005)
 HV2101
 HV2101'RECOVERY NOTE BY GEOCACHING 2005 (TAK)
 HV2101'THE MARK WAS FOUND AS DESCRIBED. IT IS ON THE TOP OF A 5 FOOT BOULDER
 HV2101'ABOUT 30 FEET ABOVE BILLY GOAT TRAIL. THE MARK CAN BE REACHED FROM THE
 HV2101'INTERSECTION OF THE C AND O TOWPATH AND THE BILLY GOAT TRAIL BY
 HV2101'PROCEEDING STRAIGHT TOWARD THE POTOMAC RIVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2790 ***********************************************************************
 JV2790  DESIGNATION -  C 229=F
 JV2790  PID         -  JV2790
 JV2790  STATE/COUNTY-  MD/MONTGOMERY
 JV2790  COUNTRY     -  US
 JV2790  USGS QUAD   -  ROCKVILLE (2016)
 JV2790
 JV2790                         *CURRENT SURVEY CONTROL
 JV2790  ______________________________________________________________________
 JV2790* NAD 83(1986) POSITION- 39 00 01.     (N) 077 14 55.     (W)   SCALED
 JV2790* NAVD 88 ORTHO HEIGHT -    50.511 (meters)      165.72  (feet) ADJUSTED
 JV2790  ______________________________________________________________________
 JV2790  GEOID HEIGHT    -        -31.722 (meters)                     GEOID18
 JV2790  DYNAMIC HEIGHT  -         50.484 (meters)      165.63  (feet) COMP
 JV2790  MODELED GRAVITY -    980,112.3   (mgal)                       NAVD 88
 JV2790
 JV2790  VERT ORDER      -  THIRD
 JV2790
 JV2790.The horizontal coordinates were scaled from a map and have
 JV2790.an estimated accuracy of +/- 6 seconds.
 JV2790
 JV2790.The orthometric height was determined by differential leveling and
 JV2790.adjusted by the NATIONAL GEODETIC SURVEY
 JV2790.in September 2004.
 JV2790
 JV2790.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2790.GEOID18 height accuracy estimate available here.
 JV2790
 JV2790.Click photographs - Photos may exist for this station.
 JV2790
 JV2790.The dynamic height is computed by dividing the NAVD 88
 JV2790.geopotential number by the normal gravity value computed on the
 JV2790.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2790.degrees latitude (g = 980.6199 gals.).
 JV2790
 JV2790.The modeled gravity was interpolated from observed gravity values.
 JV2790
 JV2790;                    North         East    Units  Estimated Accuracy
 JV2790;SPC MD       -   148,070.      378,470.      MT  (+/- 180 meters Scaled)
 JV2790
 JV2790_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ052192(NAD 83)
 JV2790
 JV2790                          SUPERSEDED SURVEY CONTROL
 JV2790
 JV2790  NGVD 29 (11/26/84)   50.750  (m)          166.50   (f) ADJUSTED    2 1
 JV2790
 JV2790.Superseded values are not recommended for survey control.
 JV2790
 JV2790.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2790.See file dsdata.pdf to determine how the superseded data were derived.
 JV2790
 JV2790_MARKER: Q = CHISELED SQUARE
 JV2790_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2790_SP_SET: LOCK
 JV2790_MARK LOGO: NONE
 JV2790_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2790_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2790
 JV2790  HISTORY     - Date     Condition        Report By
 JV2790  HISTORY     - 1893     MONUMENTED       CGS
 JV2790  HISTORY     - 1930     GOOD             CGS
 JV2790  HISTORY     - 19920120 GOOD             MSI
 JV2790
 JV2790                          STATION DESCRIPTION
 JV2790
 JV2790'DESCRIBED BY COAST AND GEODETIC SURVEY 1930
 JV2790'AT GREAT FALLS.
 JV2790'AT GREAT FALLS, MONTGOMERY COUNTY, MARYLAND, AT LOCK 20 OF THE
 JV2790'ABANDONED CHESAPEAKE AND OHIO CANAL, AT THE WEST GATE, IN THE
 JV2790'CAPSTONE OF THE SOUTH WALL, 0.8 FOOT SOUTH OF THE NORTH END,
 JV2790'AND 1.5 FEET WEST OF THE EAST EDGE.  THE BOTTOM OF A SQUARE HOLE.
 JV2790
 JV2790                          STATION RECOVERY (1992)
 JV2790
 JV2790'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV2790'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2085 ***********************************************************************
 HV2085  DESIGNATION -  C 230 PBPP
 HV2085  PID         -  HV2085
 HV2085  STATE/COUNTY-  MD/MONTGOMERY
 HV2085  COUNTRY     -  US
 HV2085  USGS QUAD   -  FALLS CHURCH (2019)
 HV2085
 HV2085                         *CURRENT SURVEY CONTROL
 HV2085  ______________________________________________________________________
 HV2085* NAD 83(1986) POSITION- 38 57 57.     (N) 077 08 19.     (W)   SCALED
 HV2085* NAVD 88 ORTHO HEIGHT -    42.14  (+/-2cm)      138.3   (feet) VERTCON3
 HV2085  ______________________________________________________________________
 HV2085  GEOID HEIGHT    -        -31.847 (meters)                     GEOID18
 HV2085  VERT ORDER      -  SECOND    CLASS I (See Below)
 HV2085
 HV2085.The horizontal coordinates were scaled from a map and have
 HV2085.an estimated accuracy of +/- 6 seconds.
 HV2085
 HV2085.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2085.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2085
 HV2085.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2085.GEOID18 height accuracy estimate available here.
 HV2085
 HV2085.The vertical order pertains to the NGVD 29 superseded value.
 HV2085
 HV2085.Click photographs - Photos may exist for this station.
 HV2085
 HV2085;                    North         East    Units  Estimated Accuracy
 HV2085;SPC MD       -   144,220.      387,990.      MT  (+/- 180 meters Scaled)
 HV2085
 HV2085_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ147151(NAD 83)
 HV2085
 HV2085                          SUPERSEDED SURVEY CONTROL
 HV2085
 HV2085  NGVD 29 (11/26/84)   42.376  (m)          139.03   (f) ADJUSTED    2 1
 HV2085
 HV2085.Superseded values are not recommended for survey control.
 HV2085
 HV2085.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2085.See file dsdata.pdf to determine how the superseded data were derived.
 HV2085
 HV2085_MARKER: DD = SURVEY DISK
 HV2085_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV2085_SP_SET: SIDEWALK
 HV2085_STAMPING: C 230
 HV2085_MARK LOGO: PBPP
 HV2085_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV2085
 HV2085  HISTORY     - Date     Condition        Report By
 HV2085  HISTORY     - UNK      MONUMENTED       PBPP
 HV2085  HISTORY     - 1930     GOOD             PBPP
 HV2085  HISTORY     - 19950709 MARK NOT FOUND   USPSQD
 HV2085
 HV2085                          STATION DESCRIPTION
 HV2085
 HV2085'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV2085'2.5 MI NW FROM DALECARLIA.
 HV2085'IN MONTGOMERY COUNTY, MARYLAND, ABOUT 2-1/2 MILES NORTHWEST
 HV2085'ALONG MAC ARTHUR BOULEVARD FROM THE DISTRICT OF COLUMBIA-MARYLAND
 HV2085'LINE AT DALECARLIA, D.C., AT GLEN ECHO PARK, AT THE EAST SIDE
 HV2085'OF THE WEST GATEWAY, JUST INSIDE THE LOW STONE WALL EAST OF THE
 HV2085'STEPS, IN THE CONCRETE WALK, AND 2 FEET FROM THE SIDE OF THE
 HV2085'CIRCULAR STONE TOWER AT THE EAST SIDE OF THE GATEWAY.  A PUBLIC
 HV2085'BUILDINGS AND PUBLIC PARKS STANDARD DISK.
 HV2085
 HV2085                          STATION RECOVERY (1995)
 HV2085
 HV2085'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV2085'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0916 ***********************************************************************
 JV0916  DESIGNATION -  C 26
 JV0916  PID         -  JV0916
 JV0916  STATE/COUNTY-  MD/BALTIMORE
 JV0916  COUNTRY     -  US
 JV0916  USGS QUAD   -  RELAY (2016)
 JV0916
 JV0916                         *CURRENT SURVEY CONTROL
 JV0916  ______________________________________________________________________
 JV0916* NAD 83(1986) POSITION- 39 14 28.     (N) 076 41 10.     (W)   SCALED
 JV0916* NAVD 88 ORTHO HEIGHT -    49.252 (meters)      161.59  (feet) ADJUSTED
 JV0916  ______________________________________________________________________
 JV0916  GEOID HEIGHT    -        -32.580 (meters)                     GEOID18
 JV0916  DYNAMIC HEIGHT  -         49.226 (meters)      161.50  (feet) COMP
 JV0916  MODELED GRAVITY -    980,100.8   (mgal)                       NAVD 88
 JV0916
 JV0916  VERT ORDER      -  SECOND    CLASS 0
 JV0916
 JV0916.The horizontal coordinates were scaled from a map and have
 JV0916.an estimated accuracy of +/- 6 seconds.
 JV0916
 JV0916.The orthometric height was determined by differential leveling and
 JV0916.adjusted by the NATIONAL GEODETIC SURVEY
 JV0916.in June 1991.
 JV0916
 JV0916.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0916.GEOID18 height accuracy estimate available here.
 JV0916
 JV0916.Click photographs - Photos may exist for this station.
 JV0916
 JV0916.The dynamic height is computed by dividing the NAVD 88
 JV0916.geopotential number by the normal gravity value computed on the
 JV0916.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0916.degrees latitude (g = 980.6199 gals.).
 JV0916
 JV0916.The modeled gravity was interpolated from observed gravity values.
 JV0916
 JV0916;                    North         East    Units  Estimated Accuracy
 JV0916;SPC MD       -   174,820.      427,100.      MT  (+/- 180 meters Scaled)
 JV0916
 JV0916_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ544448(NAD 83)
 JV0916
 JV0916                          SUPERSEDED SURVEY CONTROL
 JV0916
 JV0916  NGVD 29 (11/26/84)   49.482  (m)          162.34   (f) ADJUSTED    2 0
 JV0916
 JV0916.Superseded values are not recommended for survey control.
 JV0916
 JV0916.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0916.See file dsdata.pdf to determine how the superseded data were derived.
 JV0916
 JV0916_MARKER: DB = BENCH MARK DISK
 JV0916_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0916_SP_SET: CURB
 JV0916_STAMPING: C 26 1957
 JV0916_MARK LOGO: CGS
 JV0916_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0916
 JV0916  HISTORY     - Date     Condition        Report By
 JV0916  HISTORY     - 1957     MONUMENTED       CGS
 JV0916
 JV0916                          STATION DESCRIPTION
 JV0916
 JV0916'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0916'IN HALETHORPE.
 JV0916'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY NO. 166 AND FRANCIS
 JV0916'AVENUE IN HALETHORPE GO NORTHEAST ON FRANCIS AVENUE FOR 1.2
 JV0916'MILES TO END OF BRIDGE OVER U.S. HIGHWAY NO. 1 AND PENNSYLVANIA
 JV0916'RAILROAD AND RIDGE AVENUE.  GO EAST ON RIDGE AVENUE FOR 0.25
 JV0916'MILE TO FAIRVIEW AVENUE.  TURN LEFT AND GO 0.15 MILE ON FAIRVIEW
 JV0916'AVENUE TO MAPLE AVENUE AND STATION.  STATION IS 37 1/2 FEET
 JV0916'SOUTHEAST OF SOUTHEAST CORNER OF HOUSE NO. 4412, 14 1/2 FEET
 JV0916'NORTH OF APPROXIMATE CENTER OF MAPLE AVENUE, 13 1/2 FEET
 JV0916'SOUTHWEST OF A 20 INCH ELM TREE AND IN TOP OF CURB ABOUT 6 INCHES
 JV0916'ABOVE THE LEVEL OF AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4032 ***********************************************************************
 JV4032  DESIGNATION -  C 26 RESET
 JV4032  PID         -  JV4032
 JV4032  STATE/COUNTY-  MD/BALTIMORE
 JV4032  COUNTRY     -  US
 JV4032  USGS QUAD   -  RELAY (2016)
 JV4032
 JV4032                         *CURRENT SURVEY CONTROL
 JV4032  ______________________________________________________________________
 JV4032* NAD 83(1986) POSITION- 39 14 28.     (N) 076 41 10.     (W)   SCALED
 JV4032* NAVD 88 ORTHO HEIGHT -    48.08  (meters)      157.7   (feet) RESET
 JV4032  ______________________________________________________________________
 JV4032  GEOID HEIGHT    -        -32.580 (meters)                     GEOID18
 JV4032  VERT ORDER      -  THIRD
 JV4032
 JV4032.The horizontal coordinates were scaled from a map and have
 JV4032.an estimated accuracy of +/- 6 seconds.
 JV4032
 JV4032.The orthometric height was computed from unverified reset data.
 JV4032
 JV4032.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4032.GEOID18 height accuracy estimate available here.
 JV4032
 JV4032.Click photographs - Photos may exist for this station.
 JV4032
 JV4032;                    North         East    Units  Estimated Accuracy
 JV4032;SPC MD       -   174,820.      427,100.      MT  (+/- 180 meters Scaled)
 JV4032
 JV4032_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ544448(NAD 83)
 JV4032
 JV4032                          SUPERSEDED SURVEY CONTROL
 JV4032
 JV4032  NGVD 29 (??/??/??)   48.31   (m)          158.5    (f) RESET       3  
 JV4032
 JV4032.Superseded values are not recommended for survey control.
 JV4032
 JV4032.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4032.See file dsdata.pdf to determine how the superseded data were derived.
 JV4032
 JV4032_MARKER: DV = VERTICAL CONTROL DISK
 JV4032_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV4032_SP_SET: CURB
 JV4032_STAMPING: C 26 RESET 1976
 JV4032_MARK LOGO: NGS
 JV4032_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4032
 JV4032  HISTORY     - Date     Condition        Report By
 JV4032  HISTORY     - 1976     MONUMENTED       NGS
 JV4032
 JV4032                          STATION DESCRIPTION
 JV4032
 JV4032'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976
 JV4032'1.2 MILES NORTHEAST FROM HALETHORPE.
 JV4032'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 166 AND FRANCIS AVE
 JV4032'IN HALETHROPE, GO NORTHEAST ON FRANCIS AVENUE FOR 1.2 MILES TO THE END
 JV4032'OF THE BRIDGE OVER US HIGHWAY 1 AND PENNSYLVANIA RAILROAD AND RIDGE
 JV4032'AVE.  GO EAST ON RIDGE AVENUE FOR 0.25 MILE TO FAIRVIEW AVENUE, TURN
 JV4032'LEFT AND GO 0.15 MILE ON FAIRVIEW TO MAPLE AVENUE AND STATION.  THE
 JV4032'STATION IS 36.5 FEET SW OF A 36-INCH OAK TREE, 33.3 FT SOUTH OF THE
 JV4032'SOUTHWEST CORNER OF HOUSE NUMBER 4412, 12 FT N OF THE APPROXIMATE
 JV4032'CENTERLINE OF MAPLE AVENUE AND 30.1 FT. NORTH OF BGE POLE 248398.  A
 JV4032'STANDARD DISK SET ON TOP OF A CURB ABOUT 6 INCHES ABOVE THE LEVEL OF
 JV4032'THE AVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3574 ***********************************************************************
 JV3574  DESIGNATION -  C 27
 JV3574  PID         -  JV3574
 JV3574  STATE/COUNTY-  MD/WASHINGTON
 JV3574  COUNTRY     -  US
 JV3574  USGS QUAD   -  FUNKSTOWN (2017)
 JV3574
 JV3574                         *CURRENT SURVEY CONTROL
 JV3574  ______________________________________________________________________
 JV3574* NAD 83(1986) POSITION- 39 34 31.3    (N) 077 39 43.6    (W)   HD_HELD2
 JV3574* NAVD 88 ORTHO HEIGHT -   166.245 (meters)      545.42  (feet) ADJUSTED
 JV3574  ______________________________________________________________________
 JV3574  GEOID HEIGHT    -        -33.834 (meters)                     GEOID18
 JV3574  DYNAMIC HEIGHT  -        166.148 (meters)      545.10  (feet) COMP
 JV3574  MODELED GRAVITY -    980,045.3   (mgal)                       NAVD 88
 JV3574
 JV3574  VERT ORDER      -  SECOND    CLASS 0
 JV3574
 JV3574.The horizontal coordinates were established by autonomous hand held GPS
 JV3574.observations and have an estimated accuracy of +/- 10 meters.
 JV3574
 JV3574.The orthometric height was determined by differential leveling and
 JV3574.adjusted by the NATIONAL GEODETIC SURVEY
 JV3574.in June 1991.
 JV3574
 JV3574.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3574.GEOID18 height accuracy estimate available here.
 JV3574
 JV3574.Click photographs - Photos may exist for this station.
 JV3574
 JV3574.The dynamic height is computed by dividing the NAVD 88
 JV3574.geopotential number by the normal gravity value computed on the
 JV3574.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3574.degrees latitude (g = 980.6199 gals.).
 JV3574
 JV3574.The modeled gravity was interpolated from observed gravity values.
 JV3574
 JV3574;                    North         East    Units  Estimated Accuracy
 JV3574;SPC MD       -   212,088.      343,110.      MT  (+/- 10 meters HH2 GPS)
 JV3574
 JV3574_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7134684013(NAD 83)
 JV3574
 JV3574                          SUPERSEDED SURVEY CONTROL
 JV3574
 JV3574  NGVD 29 (11/26/84)  166.450  (m)          546.09   (f) ADJUSTED    2 0
 JV3574
 JV3574.Superseded values are not recommended for survey control.
 JV3574
 JV3574.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3574.See file dsdata.pdf to determine how the superseded data were derived.
 JV3574
 JV3574_MARKER: DB = BENCH MARK DISK
 JV3574_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3574_STAMPING: C 27 1957
 JV3574_MARK LOGO: CGS
 JV3574_PROJECTION: PROJECTING 12 CENTIMETERS
 JV3574_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3574+STABILITY: SURFACE MOTION
 JV3574_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3574+SATELLITE: SATELLITE OBSERVATIONS - July 13, 2009
 JV3574
 JV3574  HISTORY     - Date     Condition        Report By
 JV3574  HISTORY     - 1957     MONUMENTED       CGS
 JV3574  HISTORY     - 1958     GOOD             CGS
 JV3574  HISTORY     - 1987     GOOD             USPSQD
 JV3574  HISTORY     - 20080208 MARK NOT FOUND   GEOCAC
 JV3574  HISTORY     - 20090713 GOOD             MDSHA
 JV3574
 JV3574                          STATION DESCRIPTION
 JV3574
 JV3574'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3574'3.5 MI SE FROM FUNKSTOWN.
 JV3574'1.5 MILES SOUTHEAST ALONG BEAVER CREEK ROAD FROM THE JUNCTION OF
 JV3574'HEBB ROAD AT FUNKSTOWN, THENCE 1.6 MILES SOUTHEAST ALONG U.S.
 JV3574'HIGHWAY 40, THENCE 0.4 MILE SOUTHWEST ALONG COOL HOLLOW ROAD,
 JV3574'30 FEET NORTHWEST OF THE CENTER LINE OF THE ROAD, 26 FEET
 JV3574'NORTHEAST OF A GATE POST, 10 FEET NORTH OF A 20-INCH OAK TREE,
 JV3574'1.0 FOOT SOUTH OF A FENCE, 2.0 FEET SOUTHWEST OF A WITNESS POST,
 JV3574'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.4 FOOT ABOVE
 JV3574'THE GROUND.
 JV3574
 JV3574                          STATION RECOVERY (1987)
 JV3574
 JV3574'RECOVERY NOTE BY US POWER SQUADRON 1987 (GAM)
 JV3574'RECOVERED IN GOOD CONDITION.
 JV3574
 JV3574                          STATION RECOVERY (2008)
 JV3574
 JV3574'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3574'THE DESCRIPTION PLACES THE MARK INSIDE AND NORTH OF EXISTING FENCES,
 JV3574'NOT 1' SOUTH OF A FENCE.
 JV3574
 JV3574                          STATION RECOVERY (2009)
 JV3574
 JV3574'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV3574'THE MARK IS 0.35 MILES SOUTHWEST ALONG COOL HOLLOW RD FROM THE
 JV3574'JUNCTION WITH U.S. ROUTE 40, 13.5 FEET NORTHWEST OF THE CENTER LINE OF
 JV3574'THE ROAD, 2 FEET SOUTHWEST OF A CONCRETE WITNESS POST, AND 0.4 FEET
 JV3574'BELOW AND UNDER THE ROAD SURFACE. THE ROAD SURFACE HAD BEEN CHIPPED
 JV3574'AWAY TO ACCESS THE DISK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1125 ***********************************************************************
 HV1125  DESIGNATION -  C 28
 HV1125  PID         -  HV1125
 HV1125  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1125  COUNTRY     -  US
 HV1125  USGS QUAD   -  LANHAM (2016)
 HV1125
 HV1125                         *CURRENT SURVEY CONTROL
 HV1125  ______________________________________________________________________
 HV1125* NAD 83(1986) POSITION- 38 55 49.     (N) 076 51 40.     (W)   SCALED
 HV1125* NAVD 88 ORTHO HEIGHT -    33.299 (meters)      109.25  (feet) ADJUSTED
 HV1125  ______________________________________________________________________
 HV1125  GEOID HEIGHT    -        -32.401 (meters)                     GEOID18
 HV1125  DYNAMIC HEIGHT  -         33.281 (meters)      109.19  (feet) COMP
 HV1125  MODELED GRAVITY -    980,086.3   (mgal)                       NAVD 88
 HV1125
 HV1125  VERT ORDER      -  SECOND    CLASS 0
 HV1125
 HV1125.The horizontal coordinates were scaled from a map and have
 HV1125.an estimated accuracy of +/- 6 seconds.
 HV1125
 HV1125.The orthometric height was determined by differential leveling and
 HV1125.adjusted by the NATIONAL GEODETIC SURVEY
 HV1125.in June 1991.
 HV1125
 HV1125.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1125.GEOID18 height accuracy estimate available here.
 HV1125
 HV1125.Click photographs - Photos may exist for this station.
 HV1125
 HV1125.The dynamic height is computed by dividing the NAVD 88
 HV1125.geopotential number by the normal gravity value computed on the
 HV1125.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1125.degrees latitude (g = 980.6199 gals.).
 HV1125
 HV1125.The modeled gravity was interpolated from observed gravity values.
 HV1125
 HV1125;                    North         East    Units  Estimated Accuracy
 HV1125;SPC MD       -   140,280.      412,040.      MT  (+/- 180 meters Scaled)
 HV1125
 HV1125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ386106(NAD 83)
 HV1125
 HV1125                          SUPERSEDED SURVEY CONTROL
 HV1125
 HV1125  NGVD 29 (11/26/84)   33.541  (m)          110.04   (f) ADJUSTED    2 0
 HV1125
 HV1125.Superseded values are not recommended for survey control.
 HV1125
 HV1125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1125.See file dsdata.pdf to determine how the superseded data were derived.
 HV1125
 HV1125_MARKER: DB = BENCH MARK DISK
 HV1125_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1125_SP_SET: BRIDGE
 HV1125_STAMPING: C 28 1958
 HV1125_MARK LOGO: CGS
 HV1125_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1125
 HV1125  HISTORY     - Date     Condition        Report By
 HV1125  HISTORY     - 1958     MONUMENTED       CGS
 HV1125
 HV1125                          STATION DESCRIPTION
 HV1125
 HV1125'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1125'0.1 MI W FROM GLENARDEN.
 HV1125'ABOUT 0.1 MILE WEST ALONG THE GLENARDEN PARKWAY FROM THE FIRST
 HV1125'BAPTIST CHURCH AND BRIGHTSEAT ROAD AT GLENARDEN, ON THE TOP OF
 HV1125'THE SOUTHEAST CONCRETE WINGWALL OF A BRIDGE OVER A SMALL
 HV1125'CREEK, 14 FEET SOUTH OF THE CENTER LINE OF THE PARKWAY, 15
 HV1125'FEET NORTHWEST OF POWER LINE POLE NO. 10, AND ABOUT LEVEL WITH
 HV1125'THE PARKWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6541 ***********************************************************************
 JV6541  DESIGNATION -  C 29 RESET
 JV6541  PID         -  JV6541
 JV6541  STATE/COUNTY-  MD/BALTIMORE
 JV6541  COUNTRY     -  US
 JV6541  USGS QUAD   -  TOWSON (2016)
 JV6541
 JV6541                         *CURRENT SURVEY CONTROL
 JV6541  ______________________________________________________________________
 JV6541* NAD 83(1986) POSITION- 39 24 06.     (N) 076 34 01.     (W)   SCALED
 JV6541* NAVD 88 ORTHO HEIGHT -   108.08  (meters)      354.6   (feet) RESET
 JV6541  ______________________________________________________________________
 JV6541  GEOID HEIGHT    -        -32.657 (meters)                     GEOID18
 JV6541  VERT ORDER      -  THIRD
 JV6541
 JV6541.The horizontal coordinates were scaled from a map and have
 JV6541.an estimated accuracy of +/- 6 seconds.
 JV6541
 JV6541.The orthometric height was computed from unverified reset data.
 JV6541
 JV6541.No vertical observational check was made to the station.
 JV6541
 JV6541.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6541.GEOID18 height accuracy estimate available here.
 JV6541
 JV6541.Click photographs - Photos may exist for this station.
 JV6541
 JV6541;                    North         East    Units  Estimated Accuracy
 JV6541;SPC MD       -   192,690.      437,300.      MT  (+/- 180 meters Scaled)
 JV6541
 JV6541_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ650625(NAD 83)
 JV6541
 JV6541                          SUPERSEDED SURVEY CONTROL
 JV6541
 JV6541  NGVD 29 (11/18/05)  108.31   (m)          355.3    (f) RESET       3  
 JV6541
 JV6541.Superseded values are not recommended for survey control.
 JV6541
 JV6541.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6541.See file dsdata.pdf to determine how the superseded data were derived.
 JV6541
 JV6541_MARKER: DV = VERTICAL CONTROL DISK
 JV6541_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 JV6541_SP_SET: OVERHEAD SIGN FOUNDATION
 JV6541_STAMPING: C 29 RESET 1986
 JV6541_MARK LOGO: NGS
 JV6541_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6541+STABILITY: POSITION/ELEVATION WELL
 JV6541
 JV6541  HISTORY     - Date     Condition        Report By
 JV6541  HISTORY     - 1986     MONUMENTED       NGS
 JV6541  HISTORY     - 20020323 MARK NOT FOUND   USPSQD
 JV6541
 JV6541                          STATION DESCRIPTION
 JV6541
 JV6541'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 JV6541'4.2 KM (2.60 MI) SE FROM TOWSON.
 JV6541'4.2 KM (2.60 MI) SOUTHEAST ALONG INTERSTATE HIGHWAY 695 FROM THE YORK
 JV6541'ROAD EXIT AT TOWSON, AT THE EAST END OF THE NORTH HIGHWAY BRIDGE FOR
 JV6541'THE WEST BOUND LANE WHERE INTERSTATE HIGHWAY 695 PASSES OVER CROMWELL
 JV6541'BRIDGE ROAD, 11.6 M (38.1 FT) SOUTHEAST FROM THE SOUTHEAST END OF THE
 JV6541'NORTH PARAPET WALL FOR THE BRIDGE, 5.5 M (18.0 FT) EAST-SOUTHEAST
 JV6541'FROM A CATCH BASIN, 1.2 M (3.9 FT) NORTHEAST FROM THE NORTHEAST SIDE
 JV6541'OF A JERSEY BARRIER AND 0.3 M (1.0 FT) EAST FROM THE WEST CORNER OF A
 JV6541'6 BY 9 FOOT CONCRETE FOUNDATION.
 JV6541'THE MARK IS 0.6 M BELOW DECK OF BRIDGE.
 JV6541
 JV6541                          STATION RECOVERY (2002)
 JV6541
 JV6541'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 JV6541'BRIDGE HAS UNDERGONE EXTENSIVE REHABILITATION AND REPAIR
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1424 ***********************************************************************
 JU1424  DESIGNATION -  C 3
 JU1424  PID         -  JU1424
 JU1424  STATE/COUNTY-  MD/CECIL
 JU1424  COUNTRY     -  US
 JU1424  USGS QUAD   -  NORTH EAST (2016)
 JU1424
 JU1424                         *CURRENT SURVEY CONTROL
 JU1424  ______________________________________________________________________
 JU1424* NAD 83(1986) POSITION- 39 37 04.85   (N) 075 57 06.63   (W)   HD_HELD1
 JU1424* NAVD 88 ORTHO HEIGHT -    44.431 (meters)      145.77  (feet) ADJUSTED
 JU1424  ______________________________________________________________________
 JU1424  GEOID HEIGHT    -        -33.129 (meters)                     GEOID18
 JU1424  DYNAMIC HEIGHT  -         44.409 (meters)      145.70  (feet) COMP
 JU1424  MODELED GRAVITY -    980,131.5   (mgal)                       NAVD 88
 JU1424
 JU1424  VERT ORDER      -  FIRST     CLASS II
 JU1424
 JU1424.The horizontal coordinates were determined by differentially corrected
 JU1424.hand held GPS observations or other comparable positioning techniques
 JU1424.and have an estimated accuracy of +/- 3 meters.
 JU1424
 JU1424.The orthometric height was determined by differential leveling and
 JU1424.adjusted by the NATIONAL GEODETIC SURVEY
 JU1424.in June 1991.
 JU1424
 JU1424.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1424.GEOID18 height accuracy estimate available here.
 JU1424
 JU1424.Click photographs - Photos may exist for this station.
 JU1424
 JU1424.The dynamic height is computed by dividing the NAVD 88
 JU1424.geopotential number by the normal gravity value computed on the
 JU1424.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1424.degrees latitude (g = 980.6199 gals.).
 JU1424
 JU1424.The modeled gravity was interpolated from observed gravity values.
 JU1424
 JU1424;                    North         East    Units  Estimated Accuracy
 JU1424;SPC MD       -   217,134.5     490,004.1     MT  (+/- 3 meters HH1 GPS) 
 JU1424
 JU1424_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1829985794(NAD 83)
 JU1424
 JU1424                          SUPERSEDED SURVEY CONTROL
 JU1424
 JU1424  NGVD 29 (11/26/84)   44.660  (m)          146.52   (f) ADJUSTED    1 2
 JU1424
 JU1424.Superseded values are not recommended for survey control.
 JU1424
 JU1424.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1424.See file dsdata.pdf to determine how the superseded data were derived.
 JU1424
 JU1424_MARKER: DB = BENCH MARK DISK
 JU1424_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1424_STAMPING: C 3 1931 146.791
 JU1424_MARK LOGO: CGS
 JU1424_PROJECTION: PROJECTING 25 CENTIMETERS
 JU1424_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1424+STABILITY: SURFACE MOTION
 JU1424_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1424+SATELLITE: SATELLITE OBSERVATIONS - October 19, 1990
 JU1424
 JU1424  HISTORY     - Date     Condition        Report By
 JU1424  HISTORY     - 1931     MONUMENTED       CGS
 JU1424  HISTORY     - 1964     GOOD             CGS
 JU1424  HISTORY     - 1976     GOOD             NGS
 JU1424  HISTORY     - 1983     GOOD             LOCSUR
 JU1424  HISTORY     - 19901019 GOOD             NGS
 JU1424  HISTORY     - 20040313 GOOD             GEOCAC
 JU1424  HISTORY     - 20251007 GOOD             PROFLN
 JU1424
 JU1424                          STATION DESCRIPTION
 JU1424
 JU1424'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1424'AT LESLIE.
 JU1424'ALONG THE BALTIMORE AND OHIO RAILROAD AT LESLIE, AT AN OLD ROAD
 JU1424'CROSSING, 0.1 MI W OF HWY 272 BRIDGE OVER THE RAILROAD, 62 FT E
 JU1424'OF MILEPOST 48-50, 30 FT S OF THE S RAIL, 19 FT W OF THE W END OF
 JU1424'A CONCRETE WALL, 6 FT N OF THE RIGHT-OF-WAY FENCELINE AND ABOUT
 JU1424'1 FT ABOVE THE LEVEL OF THE TRACK.
 JU1424
 JU1424                          STATION RECOVERY (1976)
 JU1424
 JU1424'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
 JU1424'RECOVERED IN GOOD CONDITION.
 JU1424
 JU1424                          STATION RECOVERY (1983)
 JU1424
 JU1424'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1983
 JU1424'THE DEGISNATION OF (30 FT SOUTH OF THE SOUTH RAIL) IS NOW INCORRECT
 JU1424'BECAUSE RAILROAD IS NEW A SINGLE LINE AND THE SOUTH TRACK HAS BEEN
 JU1424'ELIMINATED. OTHER DESIGNATIONS ARE CORRECT AND SUFFICIENT.
 JU1424
 JU1424                          STATION RECOVERY (1990)
 JU1424
 JU1424'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JU1424'0.7 KM (0.4 MI) NORTHERLY ALONG STATE HIGHWAY 272 FROM THE JUNCTION OF
 JU1424'U.S. HIGHWAY 40 IN NORTH EAST, THENCE 0.6 KM (0.4 MI) NORTHWESTERLY
 JU1424'ALONG LESLIE ROAD, 14.4 M (47.2 FT) SOUTH OF THE NEAR RAIL OF THE
 JU1424'BALTIMORE AND OHIO RAILROAD, 7.7 M (25.3 FT) WEST OF AND LEVEL WITH
 JU1424'THE EXTENDED CENTER OF THE ROAD, 5.0 M (16.4 FT) WEST OF THE WEST END
 JU1424'OF A CONCRETE BARRICADE, 2.1 M (6.9 FT) SOUTHWEST OF A UTILITY POLE,
 JU1424'1.9 M (6.2 FT) NORTH OF A FENCE, 0.3 M (1.0 FT) EAST OF A WITNESS
 JU1424'POST, AND THE MONUMENT PROJECTS 0.1 M (0.3 FT) ABOVE THE GROUND
 JU1424'SURFACE.
 JU1424
 JU1424                          STATION RECOVERY (2004)
 JU1424
 JU1424'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JU1424'FOUND AS DESCRIBED, BEHIND A 'NO TRESSPASSING' GATE AT THE END OF A
 JU1424'STREET THAT DEAD-ENDS INTO THE CONRAIL RIGHT-OF-WAY.  NOTE, HOWEVER,
 JU1424'THAT THE TURNOFF FROM ROUTE. 272, MENTIONED IN THE 1990 RECOVERY
 JU1424'REPORT AS LESLIE ROAD, IS NOW KNOWN AS NAZARINE CAMP ROAD.
 JU1424
 JU1424                          STATION RECOVERY (2025)
 JU1424
 JU1424'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1424'TO REACH THE MARK FROM THE JUNCTION OF MD 272 AND US 40, TAKE 272 0.3
 JU1424'MI (0.5 KM) NORTH TO GATEWAY DRIVE AND TURN LEFT.  FOLLOW GATEWAY WEST
 JU1424'AND NORTH AROUND THE BIG WAREHOUSE TO THE END AND TURN RIGHT ON
 JU1424'NAZARENE CAMP ROAD TO A LEFT ON S. LESLIE ROAD.  TAKE THAT 0.1 MI (0.2
 JU1424'KM) NORTH TO ITS END AT THE RAILROAD AND THE MARK ON THE LEFT.
 JU1424'
 JU1424'THE MARK IS 25.5 FT (7.8 M) WEST OF S. LESLIE ROAD, 18 FT (5.5 M) WEST
 JU1424'OF THE EAST END OF 5 CONCRETE BOLLARDS, RIGHT UP AGAINST THE SOUTH
 JU1424'SIDE OF THE MIDDLE ONE, 17 FT (5.2 M) WEST-NORTHWEST OF POLE VZ 49,
 JU1424'PROJECTING 10 INCHES (25 CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0416 ***********************************************************************
 JV0416  DESIGNATION -  C 31
 JV0416  PID         -  JV0416
 JV0416  STATE/COUNTY-  MD/BALTIMORE
 JV0416  COUNTRY     -  US
 JV0416  USGS QUAD   -  WHITE MARSH (2016)
 JV0416
 JV0416                         *CURRENT SURVEY CONTROL
 JV0416  ______________________________________________________________________
 JV0416* NAD 83(1986) POSITION- 39 25 23.2    (N) 076 22 52.2    (W)   HD_HELD2
 JV0416* NAVD 88 ORTHO HEIGHT -    22.582 (meters)       74.09  (feet) ADJUSTED
 JV0416  ______________________________________________________________________
 JV0416  GEOID HEIGHT    -        -32.984 (meters)                     GEOID18
 JV0416  DYNAMIC HEIGHT  -         22.570 (meters)       74.05  (feet) COMP
 JV0416  MODELED GRAVITY -    980,103.4   (mgal)                       NAVD 88
 JV0416
 JV0416  VERT ORDER      -  FIRST     CLASS I
 JV0416
 JV0416.The horizontal coordinates were established by autonomous hand held GPS
 JV0416.observations and have an estimated accuracy of +/- 10 meters.
 JV0416
 JV0416.The orthometric height was determined by differential leveling and
 JV0416.adjusted by the NATIONAL GEODETIC SURVEY
 JV0416.in February 1998.
 JV0416
 JV0416.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0416.GEOID18 height accuracy estimate available here.
 JV0416
 JV0416.Click photographs - Photos may exist for this station.
 JV0416
 JV0416.The dynamic height is computed by dividing the NAVD 88
 JV0416.geopotential number by the normal gravity value computed on the
 JV0416.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0416.degrees latitude (g = 980.6199 gals.).
 JV0416
 JV0416.The modeled gravity was interpolated from observed gravity values.
 JV0416
 JV0416;                    North         East    Units  Estimated Accuracy
 JV0416;SPC MD       -   195,159.      453,286.      MT  (+/- 10 meters HH2 GPS)
 JV0416
 JV0416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8111564641(NAD 83)
 JV0416
 JV0416                          SUPERSEDED SURVEY CONTROL
 JV0416
 JV0416  NAVD 88 (06/15/91)   22.594  (m)           74.13   (f) SUPERSEDED  1 1
 JV0416  NGVD 29 (11/26/84)   22.838  (m)           74.93   (f) ADJUSTED    1 1
 JV0416
 JV0416.Superseded values are not recommended for survey control.
 JV0416
 JV0416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0416.See file dsdata.pdf to determine how the superseded data were derived.
 JV0416
 JV0416_MARKER: DB = BENCH MARK DISK
 JV0416_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0416_STAMPING: C 31 1959
 JV0416_MARK LOGO: CGS
 JV0416_PROJECTION: PROJECTING 10 CENTIMETERS
 JV0416_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0416+STABILITY: SURFACE MOTION
 JV0416_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0416+SATELLITE: SATELLITE OBSERVATIONS - March 13, 2019
 JV0416
 JV0416  HISTORY     - Date     Condition        Report By
 JV0416  HISTORY     - 1959     MONUMENTED       CGS
 JV0416  HISTORY     - 1971     GOOD             NGS
 JV0416  HISTORY     - 1991     GOOD             USPSQD
 JV0416  HISTORY     - 19950131 GOOD             MCCRON
 JV0416  HISTORY     - 19960505 MARK NOT FOUND   USPSQD
 JV0416  HISTORY     - 20190313 GOOD             ARCSHE
 JV0416
 JV0416                          STATION DESCRIPTION
 JV0416
 JV0416'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0416'2.6 MI W FROM JOPPA.
 JV0416'ABOUT 2.55 MILES WEST ALONG STATE HIGHWAY 7 FROM THE TRINITY
 JV0416'LUTHERAN CHURCH AND CEMETERY AT JOPPA, ABOUT 0.2 MILE WEST OF
 JV0416'THE BALTIMORE-HARFORD COUNTY LINE, 105 FEET SOUTHWEST OF THE
 JV0416'CENTER OF THE INTERSECTION OF THE HIGHWAY AND BRADSHAW ROAD,
 JV0416'24 1/2 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, 8.5 FEET
 JV0416'EAST OF THE NORTHEAST LEG OF A METAL TOWER FOR A POWER LINE,
 JV0416'8 1/2 FEET SOUTH-SOUTHEAST OF POWER POLE NUMBER 57409, 1.5 FEET
 JV0416'WEST OF A METAL WITNESS POST, ABOUT 3 FEET ABOVE THE LEVEL OF
 JV0416'THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 JV0416'2 INCHES.
 JV0416
 JV0416                          STATION RECOVERY (1991)
 JV0416
 JV0416'RECOVERY NOTE BY US POWER SQUADRON 1991 (RDB)
 JV0416'RECOVERED IN GOOD CONDITION.
 JV0416
 JV0416                          STATION RECOVERY (1995)
 JV0416
 JV0416'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV0416'RECOVERED AS DESCRIBED.
 JV0416
 JV0416                          STATION RECOVERY (1996)
 JV0416
 JV0416'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0416'MARK NOT FOUND.
 JV0416
 JV0416                          STATION RECOVERY (2019)
 JV0416
 JV0416'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 JV0416'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2169 ***********************************************************************
 JV2169  DESIGNATION -  C 34
 JV2169  PID         -  JV2169
 JV2169  STATE/COUNTY-  MD/MONTGOMERY
 JV2169  COUNTRY     -  US
 JV2169  USGS QUAD   -  KENSINGTON (2016)
 JV2169
 JV2169                         *CURRENT SURVEY CONTROL
 JV2169  ______________________________________________________________________
 JV2169* NAD 83(1986) POSITION- 39 02 45.     (N) 077 06 05.     (W)   SCALED
 JV2169* NAVD 88 ORTHO HEIGHT -    98.375 (meters)      322.75  (feet) ADJUSTED
 JV2169  ______________________________________________________________________
 JV2169  GEOID HEIGHT    -        -31.816 (meters)                     GEOID18
 JV2169  DYNAMIC HEIGHT  -         98.323 (meters)      322.58  (feet) COMP
 JV2169  MODELED GRAVITY -    980,095.1   (mgal)                       NAVD 88
 JV2169
 JV2169  VERT ORDER      -  FIRST     CLASS II
 JV2169
 JV2169.The horizontal coordinates were scaled from a map and have
 JV2169.an estimated accuracy of +/- 6 seconds.
 JV2169
 JV2169.The orthometric height was determined by differential leveling and
 JV2169.adjusted by the NATIONAL GEODETIC SURVEY
 JV2169.in June 1991.
 JV2169
 JV2169.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2169.GEOID18 height accuracy estimate available here.
 JV2169
 JV2169.Click photographs - Photos may exist for this station.
 JV2169
 JV2169.The dynamic height is computed by dividing the NAVD 88
 JV2169.geopotential number by the normal gravity value computed on the
 JV2169.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2169.degrees latitude (g = 980.6199 gals.).
 JV2169
 JV2169.The modeled gravity was interpolated from observed gravity values.
 JV2169
 JV2169;                    North         East    Units  Estimated Accuracy
 JV2169;SPC MD       -   153,100.      391,220.      MT  (+/- 180 meters Scaled)
 JV2169
 JV2169_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ181239(NAD 83)
 JV2169
 JV2169                          SUPERSEDED SURVEY CONTROL
 JV2169
 JV2169  NGVD 29 (11/26/84)   98.594  (m)          323.47   (f) ADJUSTED    1 2
 JV2169
 JV2169.Superseded values are not recommended for survey control.
 JV2169
 JV2169.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2169.See file dsdata.pdf to determine how the superseded data were derived.
 JV2169
 JV2169_MARKER: DB = BENCH MARK DISK
 JV2169_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2169_SP_SET: FOUNDATIUON
 JV2169_STAMPING: C 34 1938
 JV2169_MARK LOGO: CGS
 JV2169_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2169
 JV2169  HISTORY     - Date     Condition        Report By
 JV2169  HISTORY     - 1938     MONUMENTED       CGS
 JV2169
 JV2169                          STATION DESCRIPTION
 JV2169
 JV2169'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2169'0.6 MI N FROM GARRETT PARK.
 JV2169'ON THE METROPOLITAN BRANCH OF THE B. AND O. R.R.  0.6 MILE NORTH
 JV2169'OF GARRETT PARK STATION.  SET IN NORTHWEST CORNER OF CONCRETE
 JV2169'FOUNDATION OF SIGNAL TOWER W13-5.  EAST 4 FT FROM THE CENTER LINE
 JV2169'OF THE NORTHBOUND TRACK.  6 IN ABOVE THE LEVEL OF THE RAILS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2170 ***********************************************************************
 JV2170  DESIGNATION -  C 34 RESET 1942
 JV2170  PID         -  JV2170
 JV2170  STATE/COUNTY-  MD/MONTGOMERY
 JV2170  COUNTRY     -  US
 JV2170  USGS QUAD   -  KENSINGTON (2016)
 JV2170
 JV2170                         *CURRENT SURVEY CONTROL
 JV2170  ______________________________________________________________________
 JV2170* NAD 83(1986) POSITION- 39 02 45.     (N) 077 06 05.     (W)   SCALED
 JV2170* NAVD 88 ORTHO HEIGHT -    95.328 (meters)      312.76  (feet) ADJUSTED
 JV2170  ______________________________________________________________________
 JV2170  GEOID HEIGHT    -        -31.816 (meters)                     GEOID18
 JV2170  DYNAMIC HEIGHT  -         95.277 (meters)      312.59  (feet) COMP
 JV2170  MODELED GRAVITY -    980,095.1   (mgal)                       NAVD 88
 JV2170
 JV2170  VERT ORDER      -  FIRST     CLASS II
 JV2170
 JV2170.The horizontal coordinates were scaled from a map and have
 JV2170.an estimated accuracy of +/- 6 seconds.
 JV2170
 JV2170.The orthometric height was determined by differential leveling and
 JV2170.adjusted by the NATIONAL GEODETIC SURVEY
 JV2170.in June 1991.
 JV2170
 JV2170.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2170.GEOID18 height accuracy estimate available here.
 JV2170
 JV2170.Click photographs - Photos may exist for this station.
 JV2170
 JV2170.The dynamic height is computed by dividing the NAVD 88
 JV2170.geopotential number by the normal gravity value computed on the
 JV2170.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2170.degrees latitude (g = 980.6199 gals.).
 JV2170
 JV2170.The modeled gravity was interpolated from observed gravity values.
 JV2170
 JV2170;                    North         East    Units  Estimated Accuracy
 JV2170;SPC MD       -   153,100.      391,220.      MT  (+/- 180 meters Scaled)
 JV2170
 JV2170_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ181239(NAD 83)
 JV2170
 JV2170                          SUPERSEDED SURVEY CONTROL
 JV2170
 JV2170  NGVD 29 (11/26/84)   95.547  (m)          313.47   (f) ADJUSTED    1 2
 JV2170
 JV2170.Superseded values are not recommended for survey control.
 JV2170
 JV2170.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2170.See file dsdata.pdf to determine how the superseded data were derived.
 JV2170
 JV2170_MARKER: DB = BENCH MARK DISK
 JV2170_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2170_SP_SET: CULVERT
 JV2170_STAMPING: C 34 RESET 1942
 JV2170_MARK LOGO: CGS
 JV2170_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2170
 JV2170  HISTORY     - Date     Condition        Report By
 JV2170  HISTORY     - 1942     MONUMENTED       CGS
 JV2170
 JV2170                          STATION DESCRIPTION
 JV2170
 JV2170'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2170'0.6 MI NW FROM GARRETT PARK.
 JV2170'0.6 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2170'THE STATION AT GARRETT PARK, MONTGOMERY COUNTY, 340 FEET SOUTH
 JV2170'OF POLE 13+10, AT A CULVERT UNDER THE TRACK, IN THE TOP OF THE
 JV2170'SOUTH END OF THE EAST HEAD WALL, 30 FEET EAST OF THE CENTER
 JV2170'LINE OF THE NORTH-BOUND TRACK, AND ABOUT 11 FEET LOWER THAN THE
 JV2170'TRACK.  A STANDARD DISK, STAMPED C 34 RESET 1942.  NOTE-- THIS
 JV2170'BENCH MARK WAS ESTABLISHED AND ITS ELEVATION DETERMINED BY A PARTY
 JV2170'FROM THIS BUREAU IN AUGUST 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2237 ***********************************************************************
 JV2237  DESIGNATION -  C 35
 JV2237  PID         -  JV2237
 JV2237  STATE/COUNTY-  MD/FREDERICK
 JV2237  COUNTRY     -  US
 JV2237  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2237
 JV2237                         *CURRENT SURVEY CONTROL
 JV2237  ______________________________________________________________________
 JV2237* NAD 83(1986) POSITION- 39 15 04.9    (N) 077 28 51.6    (W)   HD_HELD2
 JV2237* NAVD 88 ORTHO HEIGHT -    68.752 (meters)      225.56  (feet) ADJUSTED
 JV2237  ______________________________________________________________________
 JV2237  GEOID HEIGHT    -        -32.550 (meters)                     GEOID18
 JV2237  DYNAMIC HEIGHT  -         68.714 (meters)      225.44  (feet) COMP
 JV2237  MODELED GRAVITY -    980,083.4   (mgal)                       NAVD 88
 JV2237
 JV2237  VERT ORDER      -  FIRST     CLASS II
 JV2237
 JV2237.The horizontal coordinates were established by autonomous hand held GPS
 JV2237.observations and have an estimated accuracy of +/- 10 meters.
 JV2237
 JV2237.The orthometric height was determined by differential leveling and
 JV2237.adjusted by the NATIONAL GEODETIC SURVEY
 JV2237.in June 1991.
 JV2237
 JV2237.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2237.GEOID18 height accuracy estimate available here.
 JV2237
 JV2237.Click photographs - Photos may exist for this station.
 JV2237
 JV2237.The dynamic height is computed by dividing the NAVD 88
 JV2237.geopotential number by the normal gravity value computed on the
 JV2237.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2237.degrees latitude (g = 980.6199 gals.).
 JV2237
 JV2237.The modeled gravity was interpolated from observed gravity values.
 JV2237
 JV2237;                    North         East    Units  Estimated Accuracy
 JV2237;SPC MD       -   176,020.      358,482.      MT  (+/- 10 meters HH2 GPS)
 JV2237
 JV2237_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8591447604(NAD 83)
 JV2237
 JV2237                          SUPERSEDED SURVEY CONTROL
 JV2237
 JV2237  NGVD 29 (11/26/84)   68.972  (m)          226.29   (f) ADJUSTED    1 2
 JV2237
 JV2237.Superseded values are not recommended for survey control.
 JV2237
 JV2237.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2237.See file dsdata.pdf to determine how the superseded data were derived.
 JV2237
 JV2237_MARKER: DB = BENCH MARK DISK
 JV2237_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2237_SP_SET: BRIDGE
 JV2237_STAMPING: C 35 1938
 JV2237_MARK LOGO: CGS
 JV2237_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2237_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2237+SATELLITE: SATELLITE OBSERVATIONS - April 04, 2010
 JV2237
 JV2237  HISTORY     - Date     Condition        Report By
 JV2237  HISTORY     - 1938     MONUMENTED       CGS
 JV2237  HISTORY     - 1979     GOOD             NGS
 JV2237  HISTORY     - 20100404 GOOD             GEOCAC
 JV2237
 JV2237                          STATION DESCRIPTION
 JV2237
 JV2237'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2237'0.3 MI NW FROM TUSCARORA.
 JV2237'0.3 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2237'THE STATION AT TUSCARORA, FREDERICK COUNTY, AT BRIDGE 40-C, IN
 JV2237'THE TOP STEP OF THE NORTHEAST WING WALL, 9 FEET NORTHEAST OF THE
 JV2237'CENTER LINE OF THE NORTH-BOUND TRACK, AND 1 FOOT BELOW THE LEVEL
 JV2237'OF THE RAILS.  A STANDARD DISK, STAMPED C 35 1938.
 JV2237
 JV2237                          STATION RECOVERY (1979)
 JV2237
 JV2237'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2237'RECOVERED IN GOOD CONDITION.
 JV2237
 JV2237                          STATION RECOVERY (2010)
 JV2237
 JV2237'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2237'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1398 ***********************************************************************
 JV1398  DESIGNATION -  C 36
 JV1398  PID         -  JV1398
 JV1398  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1398  COUNTRY     -  US
 JV1398  USGS QUAD   -  ROUND BAY (2016)
 JV1398
 JV1398                         *CURRENT SURVEY CONTROL
 JV1398  ______________________________________________________________________
 JV1398* NAD 83(1986) POSITION- 39 02 17.     (N) 076 36 13.     (W)   SCALED
 JV1398* NAVD 88 ORTHO HEIGHT -    50.486 (meters)      165.64  (feet) ADJUSTED
 JV1398  ______________________________________________________________________
 JV1398  GEOID HEIGHT    -        -32.984 (meters)                     GEOID18
 JV1398  DYNAMIC HEIGHT  -         50.458 (meters)      165.54  (feet) COMP
 JV1398  MODELED GRAVITY -    980,076.7   (mgal)                       NAVD 88
 JV1398
 JV1398  VERT ORDER      -  FIRST     CLASS II
 JV1398
 JV1398.The horizontal coordinates were scaled from a map and have
 JV1398.an estimated accuracy of +/- 6 seconds.
 JV1398
 JV1398.The orthometric height was determined by differential leveling and
 JV1398.adjusted by the NATIONAL GEODETIC SURVEY
 JV1398.in June 1991.
 JV1398
 JV1398.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1398.GEOID18 height accuracy estimate available here.
 JV1398
 JV1398.Click photographs - Photos may exist for this station.
 JV1398
 JV1398.The dynamic height is computed by dividing the NAVD 88
 JV1398.geopotential number by the normal gravity value computed on the
 JV1398.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1398.degrees latitude (g = 980.6199 gals.).
 JV1398
 JV1398.The modeled gravity was interpolated from observed gravity values.
 JV1398
 JV1398;                    North         East    Units  Estimated Accuracy
 JV1398;SPC MD       -   152,310.      434,320.      MT  (+/- 180 meters Scaled)
 JV1398
 JV1398_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ612222(NAD 83)
 JV1398
 JV1398                          SUPERSEDED SURVEY CONTROL
 JV1398
 JV1398  NGVD 29 (11/26/84)   50.725  (m)          166.42   (f) ADJUSTED    1 2
 JV1398
 JV1398.Superseded values are not recommended for survey control.
 JV1398
 JV1398.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1398.See file dsdata.pdf to determine how the superseded data were derived.
 JV1398
 JV1398_MARKER: DB = BENCH MARK DISK
 JV1398_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1398_STAMPING: C 36 1938
 JV1398_MARK LOGO: CGS
 JV1398_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1398+STABILITY: SURFACE MOTION
 JV1398
 JV1398  HISTORY     - Date     Condition        Report By
 JV1398  HISTORY     - 1938     MONUMENTED       CGS
 JV1398  HISTORY     - 1938     GOOD             CGS
 JV1398
 JV1398                          STATION DESCRIPTION
 JV1398
 JV1398'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV1398'AT GOTT.
 JV1398'AT GOTT, ANNE ARUNDEL COUNTY, ON STATE HIGHWAY 178, 35 FEET
 JV1398'NORTH OF A POINT 40 FEET WEST OF THE JUNCTION OF A ROAD LEADING
 JV1398'TO HERALD HARBOR, AND 20 FEET WEST OF A 24-INCH LOCUST TREE.
 JV1398'A STANDARD DISK, STAMPED C 36 1938 AND SET IN THE TOP OF A
 JV1398'CONCRETE POST.
 JV1398
 JV1398                          STATION RECOVERY (1938)
 JV1398
 JV1398'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938
 JV1398'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0946 ***********************************************************************
 HV0946  DESIGNATION -  C 37
 HV0946  PID         -  HV0946
 HV0946  STATE/COUNTY-  MD/CALVERT
 HV0946  COUNTRY     -  US
 HV0946  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0946
 HV0946                         *CURRENT SURVEY CONTROL
 HV0946  ______________________________________________________________________
 HV0946* NAD 83(1986) POSITION- 38 32 57.     (N) 076 35 22.     (W)   SCALED
 HV0946* NAVD 88 ORTHO HEIGHT -    41.835 (meters)      137.25  (feet) ADJUSTED
 HV0946  ______________________________________________________________________
 HV0946  GEOID HEIGHT    -        -33.822 (meters)                     GEOID18
 HV0946  DYNAMIC HEIGHT  -         41.810 (meters)      137.17  (feet) COMP
 HV0946  MODELED GRAVITY -    980,030.8   (mgal)                       NAVD 88
 HV0946
 HV0946  VERT ORDER      -  FIRST     CLASS II
 HV0946
 HV0946.The horizontal coordinates were scaled from a map and have
 HV0946.an estimated accuracy of +/- 6 seconds.
 HV0946
 HV0946.The orthometric height was determined by differential leveling and
 HV0946.adjusted by the NATIONAL GEODETIC SURVEY
 HV0946.in June 1991.
 HV0946
 HV0946.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0946.GEOID18 height accuracy estimate available here.
 HV0946
 HV0946.Click photographs - Photos may exist for this station.
 HV0946
 HV0946.The dynamic height is computed by dividing the NAVD 88
 HV0946.geopotential number by the normal gravity value computed on the
 HV0946.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0946.degrees latitude (g = 980.6199 gals.).
 HV0946
 HV0946.The modeled gravity was interpolated from observed gravity values.
 HV0946
 HV0946;                    North         East    Units  Estimated Accuracy
 HV0946;SPC MD       -    98,040.      435,790.      MT  (+/- 180 meters Scaled)
 HV0946
 HV0946_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH614679(NAD 83)
 HV0946
 HV0946                          SUPERSEDED SURVEY CONTROL
 HV0946
 HV0946  NGVD 29 (11/26/84)   42.123  (m)          138.20   (f) ADJUSTED    1 2
 HV0946
 HV0946.Superseded values are not recommended for survey control.
 HV0946
 HV0946.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0946.See file dsdata.pdf to determine how the superseded data were derived.
 HV0946
 HV0946_MARKER: DB = BENCH MARK DISK
 HV0946_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0946_STAMPING: C 37 1941
 HV0946_MARK LOGO: CGS
 HV0946_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0946+STABILITY: SURFACE MOTION
 HV0946
 HV0946  HISTORY     - Date     Condition        Report By
 HV0946  HISTORY     - 1941     MONUMENTED       CGS
 HV0946  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0946  HISTORY     - 19950625 MARK NOT FOUND   USPSQD
 HV0946
 HV0946                          STATION DESCRIPTION
 HV0946
 HV0946'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0946'1 MI N FROM PRINCE FREDERICK.
 HV0946'1.0 MILE NORTH ALONG OLD STATE HIGHWAY 2 FROM THE COUNTY COURTHOUSE
 HV0946'AT PRINCE FREDERICK, CALVERT COUNTY, AT A SCHOOLHOUSE, 20 FEET
 HV0946'SOUTH OF THE NORTHEAST CORNER OF THE SCHOOLYARD, ON THE EAST
 HV0946'SIDE OF THE HIGHWAY, AND AT A WHITE WOODEN WITNESS POST.  A
 HV0946'STANDARD DISK, STAMPED C 37 1941 AND SET IN THE TOP OF A CONCRETE
 HV0946'POST.  NOTE-- THERE IS A NEW HIGHWAY ON THE OPPOSITE SIDE OF
 HV0946'THE SCHOOLHOUSE FROM THE OLD HIGHWAY.
 HV0946
 HV0946                          STATION RECOVERY (1971)
 HV0946
 HV0946'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0946'MARK NOT FOUND.
 HV0946
 HV0946                          STATION RECOVERY (1995)
 HV0946
 HV0946'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0946'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0319 ***********************************************************************
 HV0319  DESIGNATION -  C 38
 HV0319  PID         -  HV0319
 HV0319  STATE/COUNTY-  MD/ST MARYS
 HV0319  COUNTRY     -  US
 HV0319  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0319
 HV0319                         *CURRENT SURVEY CONTROL
 HV0319  ______________________________________________________________________
 HV0319* NAD 83(1986) POSITION- 38 15 49.     (N) 076 27 27.     (W)   SCALED
 HV0319* NAVD 88 ORTHO HEIGHT -    30.499 (meters)      100.06  (feet) ADJUSTED
 HV0319  ______________________________________________________________________
 HV0319  GEOID HEIGHT    -        -34.497 (meters)                     GEOID18
 HV0319  DYNAMIC HEIGHT  -         30.480 (meters)      100.00  (feet) COMP
 HV0319  MODELED GRAVITY -    980,009.9   (mgal)                       NAVD 88
 HV0319
 HV0319  VERT ORDER      -  FIRST     CLASS II
 HV0319
 HV0319.The horizontal coordinates were scaled from a map and have
 HV0319.an estimated accuracy of +/- 6 seconds.
 HV0319
 HV0319.The orthometric height was determined by differential leveling and
 HV0319.adjusted by the NATIONAL GEODETIC SURVEY
 HV0319.in June 1991.
 HV0319
 HV0319.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0319.GEOID18 height accuracy estimate available here.
 HV0319
 HV0319.Click photographs - Photos may exist for this station.
 HV0319
 HV0319.The dynamic height is computed by dividing the NAVD 88
 HV0319.geopotential number by the normal gravity value computed on the
 HV0319.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0319.degrees latitude (g = 980.6199 gals.).
 HV0319
 HV0319.The modeled gravity was interpolated from observed gravity values.
 HV0319
 HV0319;                    North         East    Units  Estimated Accuracy
 HV0319;SPC MD       -    66,410.      447,480.      MT  (+/- 180 meters Scaled)
 HV0319
 HV0319_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH724360(NAD 83)
 HV0319
 HV0319                          SUPERSEDED SURVEY CONTROL
 HV0319
 HV0319  NGVD 29 (11/26/84)   30.791  (m)          101.02   (f) ADJUSTED    1 2
 HV0319
 HV0319.Superseded values are not recommended for survey control.
 HV0319
 HV0319.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0319.See file dsdata.pdf to determine how the superseded data were derived.
 HV0319
 HV0319_MARKER: DB = BENCH MARK DISK
 HV0319_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0319_STAMPING: C 38 1941
 HV0319_MARK LOGO: CGS
 HV0319_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0319+STABILITY: SURFACE MOTION
 HV0319
 HV0319  HISTORY     - Date     Condition        Report By
 HV0319  HISTORY     - 1941     MONUMENTED       CGS
 HV0319  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0319  HISTORY     - 1982     MARK NOT FOUND   USGS
 HV0319
 HV0319                          STATION DESCRIPTION
 HV0319
 HV0319'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0319'3.2 MI NE FROM GREAT MILLS.
 HV0319'ABOUT 3.2 MILES NORTHEAST ALONG THE COUNTY ROAD LEADING TO
 HV0319'JARBOESVILLE FROM THE POST OFFICE AT GREAT MILLS, ST. MARYS
 HV0319'COUNTY, IN THE WEST CORNER OF THE YARD OF A SMALL FARMHOUSE,
 HV0319'39.5 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE HOUSE, 34
 HV0319'FEET SOUTHEAST OF THE CENTER LINE OF THE ROAD, 26 FEET EAST OF
 HV0319'THE SOUTHEAST END OF A 12-INCH CONCRETE CULVERT, 14.4 FEET
 HV0319'SOUTHEAST OF POLE 106, AND 0.7 FOOT NORTH OF A WHITE WOODEN POST
 HV0319'STENCILED U.S.B.M.  A STANDARD DISK, STAMPED C 38 1941 AND SET IN
 HV0319'THE TOP OF A CONCRETE POST.  NOTE-- THE ROAD HAS BEEN WIDENED AND
 HV0319'THE MARK WAS PROBABLY DESTROYED.
 HV0319
 HV0319                          STATION RECOVERY (1982)
 HV0319
 HV0319'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1982
 HV0319'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1384 ***********************************************************************
 JV1384  DESIGNATION -  C 39
 JV1384  PID         -  JV1384
 JV1384  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1384  COUNTRY     -  US
 JV1384  USGS QUAD   -  ODENTON (2016)
 JV1384
 JV1384                         *CURRENT SURVEY CONTROL
 JV1384  ______________________________________________________________________
 JV1384* NAD 83(1986) POSITION- 39 03 37.     (N) 076 43 58.     (W)   SCALED
 JV1384* NAVD 88 ORTHO HEIGHT -    26.860 (meters)       88.12  (feet) ADJUSTED
 JV1384  ______________________________________________________________________
 JV1384  GEOID HEIGHT    -        -32.609 (meters)                     GEOID18
 JV1384  DYNAMIC HEIGHT  -         26.845 (meters)       88.07  (feet) COMP
 JV1384  MODELED GRAVITY -    980,084.6   (mgal)                       NAVD 88
 JV1384
 JV1384  VERT ORDER      -  FIRST     CLASS II
 JV1384
 JV1384.The horizontal coordinates were scaled from a map and have
 JV1384.an estimated accuracy of +/- 6 seconds.
 JV1384
 JV1384.The orthometric height was determined by differential leveling and
 JV1384.adjusted by the NATIONAL GEODETIC SURVEY
 JV1384.in June 1991.
 JV1384
 JV1384.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1384.GEOID18 height accuracy estimate available here.
 JV1384
 JV1384.Click photographs - Photos may exist for this station.
 JV1384
 JV1384.The dynamic height is computed by dividing the NAVD 88
 JV1384.geopotential number by the normal gravity value computed on the
 JV1384.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1384.degrees latitude (g = 980.6199 gals.).
 JV1384
 JV1384.The modeled gravity was interpolated from observed gravity values.
 JV1384
 JV1384;                    North         East    Units  Estimated Accuracy
 JV1384;SPC MD       -   154,730.      423,130.      MT  (+/- 180 meters Scaled)
 JV1384
 JV1384_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ500248(NAD 83)
 JV1384
 JV1384                          SUPERSEDED SURVEY CONTROL
 JV1384
 JV1384  NGVD 29 (11/26/84)   27.090  (m)           88.88   (f) ADJUSTED    1 2
 JV1384
 JV1384.Superseded values are not recommended for survey control.
 JV1384
 JV1384.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1384.See file dsdata.pdf to determine how the superseded data were derived.
 JV1384
 JV1384_MARKER: DB = BENCH MARK DISK
 JV1384_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1384+WITH SETTING: PAVEMENT
 JV1384_SP_SET: POLE BASE
 JV1384_STAMPING: C 39 1941
 JV1384_MARK LOGO: CGS
 JV1384_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1384+STABILITY: SURFACE MOTION
 JV1384
 JV1384  HISTORY     - Date     Condition        Report By
 JV1384  HISTORY     - 1941     MONUMENTED       CGS
 JV1384  HISTORY     - 1978     MARK NOT FOUND   LOCENG
 JV1384
 JV1384                          STATION DESCRIPTION
 JV1384
 JV1384'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1384'2.2 MI SW FROM ODENTON.
 JV1384'ABOUT 2.2 MILES SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1384'THE STATION AT ODENTON, ANNE ARUNDEL COUNTY, ABOUT 113 FEET
 JV1384'SOUTHWEST OF MILEPOST 116, AT POWER-TRANSMISSION LINE POLE
 JV1384'116-03, IN THE TOP OF THE SOUTH CORNER OF THE CONCRETE BASE,
 JV1384'AND 7 FEET NORTHWEST OF THE NORTHWEST RAIL OF THE NORTHWEST
 JV1384'TRACK.  A STANDARD DISK, STAMPED C 39 1941.
 JV1384
 JV1384                          STATION RECOVERY (1978)
 JV1384
 JV1384'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1978
 JV1384'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0559 ***********************************************************************
 JV0559  DESIGNATION -  C 4
 JV0559  PID         -  JV0559
 JV0559  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0559  COUNTRY     -  US
 JV0559  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0559
 JV0559                         *CURRENT SURVEY CONTROL
 JV0559  ______________________________________________________________________
 JV0559* NAD 83(1986) POSITION- 39 18 28.     (N) 076 37 15.     (W)   SCALED
 JV0559* NAVD 88 ORTHO HEIGHT -    21.437 (meters)       70.33  (feet) ADJUSTED
 JV0559  ______________________________________________________________________
 JV0559  GEOID HEIGHT    -        -32.669 (meters)                     GEOID18
 JV0559  DYNAMIC HEIGHT  -         21.425 (meters)       70.29  (feet) COMP
 JV0559  MODELED GRAVITY -    980,104.3   (mgal)                       NAVD 88
 JV0559
 JV0559  VERT ORDER      -  FIRST     CLASS II
 JV0559
 JV0559.The horizontal coordinates were scaled from a map and have
 JV0559.an estimated accuracy of +/- 6 seconds.
 JV0559
 JV0559.The orthometric height was determined by differential leveling and
 JV0559.adjusted by the NATIONAL GEODETIC SURVEY
 JV0559.in June 1991.
 JV0559
 JV0559.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0559.GEOID18 height accuracy estimate available here.
 JV0559
 JV0559.Click photographs - Photos may exist for this station.
 JV0559
 JV0559.The dynamic height is computed by dividing the NAVD 88
 JV0559.geopotential number by the normal gravity value computed on the
 JV0559.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0559.degrees latitude (g = 980.6199 gals.).
 JV0559
 JV0559.The modeled gravity was interpolated from observed gravity values.
 JV0559
 JV0559;                    North         East    Units  Estimated Accuracy
 JV0559;SPC MD       -   182,240.      432,700.      MT  (+/- 180 meters Scaled)
 JV0559
 JV0559_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ602521(NAD 83)
 JV0559
 JV0559                          SUPERSEDED SURVEY CONTROL
 JV0559
 JV0559  NGVD 29 (11/26/84)   21.671  (m)           71.10   (f) ADJUSTED    1 2
 JV0559
 JV0559.Superseded values are not recommended for survey control.
 JV0559
 JV0559.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0559.See file dsdata.pdf to determine how the superseded data were derived.
 JV0559
 JV0559_MARKER: DB = BENCH MARK DISK
 JV0559_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV0559+WITH SETTING: PAVEMENT
 JV0559_SP_SET: CONDUIT
 JV0559_STAMPING: C 4 1933
 JV0559_MARK LOGO: CGS
 JV0559_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0559+STABILITY: SURFACE MOTION
 JV0559
 JV0559  HISTORY     - Date     Condition        Report By
 JV0559  HISTORY     - 1933     MONUMENTED       CGS
 JV0559
 JV0559                          STATION DESCRIPTION
 JV0559
 JV0559'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 JV0559'AT BALTIMORE.
 JV0559'AT BALTIMORE, ON THE BALTIMORE AND OHIO RAILROAD, NEAR
 JV0559'MOUNT ROYAL STATION, 100 FEET SOUTH OF THE SOUTH END OF THE
 JV0559'STATION, AT THE ENTRANCE TO THE HOWARD STREET TUNNEL, IN THE
 JV0559'CONCRETE CONDUIT WHICH CARRIES THE ELECTRIC CABLES THROUGH THE
 JV0559'TUNNEL, 60 FEET EAST OF THE WEST SOUTH-BOUND TRACK, AND ABOUT
 JV0559'4 FEET HIGHER THAN THE PLATFORM.  A STANDARD DISK, STAMPED
 JV0559'C 4 1933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0959 ***********************************************************************
 HV0959  DESIGNATION -  C 40
 HV0959  PID         -  HV0959
 HV0959  STATE/COUNTY-  MD/CHARLES
 HV0959  COUNTRY     -  US
 HV0959  USGS QUAD   -  HUGHESVILLE (2016)
 HV0959
 HV0959                         *CURRENT SURVEY CONTROL
 HV0959  ______________________________________________________________________
 HV0959* NAD 83(1986) POSITION- 38 35 41.     (N) 076 52 11.     (W)   SCALED
 HV0959* NAVD 88 ORTHO HEIGHT -    55.882 (meters)      183.34  (feet) ADJUSTED
 HV0959  ______________________________________________________________________
 HV0959  GEOID HEIGHT    -        -33.125 (meters)                     GEOID18
 HV0959  DYNAMIC HEIGHT  -         55.848 (meters)      183.23  (feet) COMP
 HV0959  MODELED GRAVITY -    980,030.6   (mgal)                       NAVD 88
 HV0959
 HV0959  VERT ORDER      -  FIRST     CLASS II
 HV0959
 HV0959.The horizontal coordinates were scaled from a map and have
 HV0959.an estimated accuracy of +/- 6 seconds.
 HV0959
 HV0959.The orthometric height was determined by differential leveling and
 HV0959.adjusted by the NATIONAL GEODETIC SURVEY
 HV0959.in June 1991.
 HV0959
 HV0959.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0959.GEOID18 height accuracy estimate available here.
 HV0959
 HV0959.Click photographs - Photos may exist for this station.
 HV0959
 HV0959.The dynamic height is computed by dividing the NAVD 88
 HV0959.geopotential number by the normal gravity value computed on the
 HV0959.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0959.degrees latitude (g = 980.6199 gals.).
 HV0959
 HV0959.The modeled gravity was interpolated from observed gravity values.
 HV0959
 HV0959;                    North         East    Units  Estimated Accuracy
 HV0959;SPC MD       -   103,030.      411,350.      MT  (+/- 180 meters Scaled)
 HV0959
 HV0959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH371734(NAD 83)
 HV0959
 HV0959                          SUPERSEDED SURVEY CONTROL
 HV0959
 HV0959  NGVD 29 (11/26/84)   56.132  (m)          184.16   (f) ADJUSTED    1 2
 HV0959
 HV0959.Superseded values are not recommended for survey control.
 HV0959
 HV0959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0959.See file dsdata.pdf to determine how the superseded data were derived.
 HV0959
 HV0959_MARKER: DB = BENCH MARK DISK
 HV0959_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0959_SP_SET: CULVERT
 HV0959_STAMPING: C 40 1941
 HV0959_MARK LOGO: CGS
 HV0959_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0959
 HV0959  HISTORY     - Date     Condition        Report By
 HV0959  HISTORY     - 1941     MONUMENTED       CGS
 HV0959
 HV0959                          STATION DESCRIPTION
 HV0959
 HV0959'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0959'3.1 MI SE FROM WALDORF.
 HV0959'3.1 MILES SOUTH-EAST ALONG STATE HIGHWAY NO. 5 FROM THE STATION
 HV0959'AT WALDORF, ABOUT 1/2 WAY BETWEEN THE SUMMIT AND THE BOTTOM OF A
 HV0959'LONG HILL THAT SLOPES TO THE NORTH, SET IN THE SOUTH CORNER OF
 HV0959'THE WEST HEAD-WALL OF AN 18-INCH CONCRETE CULVERT UNDER THE
 HV0959'HIGHWAY, 23.5 FEET WEST OF THE CENTER-LINE OF HIGHWAY, 1.2 FEET
 HV0959'NORTH OF THE SOUTH END OF THE HEAD-WALL, 5.6 FEET SOUTH OF THE
 HV0959'NORTH END OF THE HEAD-WALL.  A STANDARD DISK STAMPED C-40 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0960 ***********************************************************************
 HV0960  DESIGNATION -  C 40 RESET
 HV0960  PID         -  HV0960
 HV0960  STATE/COUNTY-  MD/CHARLES
 HV0960  COUNTRY     -  US
 HV0960  USGS QUAD   -  HUGHESVILLE (2016)
 HV0960
 HV0960                         *CURRENT SURVEY CONTROL
 HV0960  ______________________________________________________________________
 HV0960* NAD 83(1986) POSITION- 38 35 41.     (N) 076 52 11.     (W)   SCALED
 HV0960* NAVD 88 ORTHO HEIGHT -    56.10  (+/-2cm)      184.1   (feet) VERTCON3
 HV0960  ______________________________________________________________________
 HV0960  GEOID HEIGHT    -        -33.125 (meters)                     GEOID18
 HV0960  VERT ORDER      -  THIRD (See Below)
 HV0960
 HV0960.The horizontal coordinates were scaled from a map and have
 HV0960.an estimated accuracy of +/- 6 seconds.
 HV0960
 HV0960.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0960.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0960
 HV0960.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0960.GEOID18 height accuracy estimate available here.
 HV0960
 HV0960.The vertical order pertains to the NGVD 29 superseded value.
 HV0960
 HV0960.Click photographs - Photos may exist for this station.
 HV0960
 HV0960;                    North         East    Units  Estimated Accuracy
 HV0960;SPC MD       -   103,030.      411,350.      MT  (+/- 180 meters Scaled)
 HV0960
 HV0960_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH371734(NAD 83)
 HV0960
 HV0960                          SUPERSEDED SURVEY CONTROL
 HV0960
 HV0960  NGVD 29 (??/??/??)   56.35   (m)          184.9    (f) RESET       3  
 HV0960
 HV0960.Superseded values are not recommended for survey control.
 HV0960
 HV0960.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0960.See file dsdata.pdf to determine how the superseded data were derived.
 HV0960
 HV0960_MARKER: DB = BENCH MARK DISK
 HV0960_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0960_STAMPING: C 40 RESET 1965
 HV0960_MARK LOGO: CGS
 HV0960_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0960+STABILITY: SURFACE MOTION
 HV0960
 HV0960  HISTORY     - Date     Condition        Report By
 HV0960  HISTORY     - 1965     MONUMENTED       MDSRC
 HV0960
 HV0960                          STATION DESCRIPTION
 HV0960
 HV0960'DESCRIBED BY MD STATE ROADS COMM 1965
 HV0960'3.1 MI SE FROM WALDORF.
 HV0960'ABOUT 3.1 MILES SOUTHEAST ALONG MARYLAND ROUTE 5 FROM THE
 HV0960'PENNSYLVANIA RAILROAD STATION IN WALDORF, 47.6 FEET WEST OF THE
 HV0960'SOUTHBOUND LANE OF MARYLAND ROUTE 5, 26.0 FEET NORTH OF THE
 HV0960'CENTERLINE OF A DRIVEWAY AND 1.2 FEET WEST OF A C AND P POLE, SET
 HV0960'IN A CONCRETE POST PROJECTING 6 INCHES. NOTE-- BELIEVED DESTROYED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8046 ***********************************************************************
 HV8046  DESIGNATION -  C 40 RESET
 HV8046  PID         -  HV8046
 HV8046  STATE/COUNTY-  MD/CHARLES
 HV8046  COUNTRY     -  US
 HV8046  USGS QUAD   -  HUGHESVILLE (2016)
 HV8046
 HV8046                         *CURRENT SURVEY CONTROL
 HV8046  ______________________________________________________________________
 HV8046* NAD 83(1986) POSITION- 38 35 41.     (N) 076 52 11.     (W)   SCALED
 HV8046* NAVD 88 ORTHO HEIGHT -    57.42  (meters)      188.4   (feet) RESET
 HV8046  ______________________________________________________________________
 HV8046  GEOID HEIGHT    -        -33.125 (meters)                     GEOID18
 HV8046  VERT ORDER      -  THIRD
 HV8046
 HV8046.The horizontal coordinates were scaled from a map and have
 HV8046.an estimated accuracy of +/- 6 seconds.
 HV8046
 HV8046.The orthometric height was computed from unverified reset data.
 HV8046
 HV8046.No vertical observational check was made to the station.
 HV8046
 HV8046.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8046.GEOID18 height accuracy estimate available here.
 HV8046
 HV8046.Click photographs - Photos may exist for this station.
 HV8046
 HV8046;                    North         East    Units  Estimated Accuracy
 HV8046;SPC MD       -   103,030.      411,350.      MT  (+/- 180 meters Scaled)
 HV8046
 HV8046_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH371734(NAD 83)
 HV8046
 HV8046                          SUPERSEDED SURVEY CONTROL
 HV8046
 HV8046  NGVD 29 (??/??/??)   57.67   (m)          189.2    (f) RESET       3  
 HV8046
 HV8046.Superseded values are not recommended for survey control.
 HV8046
 HV8046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8046.See file dsdata.pdf to determine how the superseded data were derived.
 HV8046
 HV8046_MARKER: DB = BENCH MARK DISK
 HV8046_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8046_STAMPING: C 40 1941 RESET 1964
 HV8046_MARK LOGO: CGS
 HV8046_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8046+STABILITY: SURFACE MOTION
 HV8046
 HV8046  HISTORY     - Date     Condition        Report By
 HV8046  HISTORY     - 1964     MONUMENTED       CGS
 HV8046
 HV8046                          STATION DESCRIPTION
 HV8046
 HV8046'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 HV8046'3.1 MI SE FROM WALDORF.
 HV8046'STATION IS LOCATED ABOUT 3.1 MILES S.E OF THE PENNSYLVANIA RAILROAD
 HV8046'STATION OF WALDORF, ALONG MARYLAND 5 ON THE LEFT, 1.3 FT N.E. OF C &
 HV8046'P POLE NO. 86, 25.0 FT. E. OF THE PROPOSED NORTH BOUND LANE OF
 HV8046'MARYLAND 5, AND 41.0 FT. N OF THE CENTELINE OF A DRIVEWAY. A STANDARD
 HV8046'DISK SET IN THE TOP OF A CONCRETE POST PROJECTING 6' STAMPED 'C -40
 HV8046'1941, RESET 1964.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0688 ***********************************************************************
 HV0688  DESIGNATION -  C 41
 HV0688  PID         -  HV0688
 HV0688  STATE/COUNTY-  MD/ST MARYS
 HV0688  COUNTRY     -  US
 HV0688  USGS QUAD   -  LEONARDTOWN (2016)
 HV0688
 HV0688                         *CURRENT SURVEY CONTROL
 HV0688  ______________________________________________________________________
 HV0688* NAD 83(1986) POSITION- 38 20 23.     (N) 076 40 33.     (W)   SCALED
 HV0688* NAVD 88 ORTHO HEIGHT -    35.932 (meters)      117.89  (feet) POSTED
 HV0688  ______________________________________________________________________
 HV0688  GEOID HEIGHT    -        -33.786 (meters)                     GEOID18
 HV0688  DYNAMIC HEIGHT  -         35.91  (meters)      117.8   (feet) COMP
 HV0688  MODELED GRAVITY -    980,032.6   (mgal)                       NAVD 88
 HV0688
 HV0688  VERT ORDER      -  * POSTED, SEE BELOW
 HV0688
 HV0688.The horizontal coordinates were scaled from a map and have
 HV0688.an estimated accuracy of +/- 6 seconds.
 HV0688
 HV0688.The orthometric height was determined by differential leveling
 HV0688.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0688
 HV0688.* This is a POSTED BENCH MARK height.
 HV0688
 HV0688.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0688.GEOID18 height accuracy estimate available here.
 HV0688
 HV0688.Click photographs - Photos may exist for this station.
 HV0688
 HV0688.The dynamic height is computed by dividing the NAVD 88
 HV0688.geopotential number by the normal gravity value computed on the
 HV0688.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0688.degrees latitude (g = 980.6199 gals.).
 HV0688
 HV0688.The modeled gravity was interpolated from observed gravity values.
 HV0688
 HV0688;                    North         East    Units  Estimated Accuracy
 HV0688;SPC MD       -    74,760.      428,340.      MT  (+/- 180 meters Scaled)
 HV0688
 HV0688_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH535448(NAD 83)
 HV0688
 HV0688                          SUPERSEDED SURVEY CONTROL
 HV0688
 HV0688  NGVD 29 (11/26/84)   36.221  (m)          118.84   (f) ADJUSTED    1 2
 HV0688
 HV0688.Superseded values are not recommended for survey control.
 HV0688
 HV0688.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0688.See file dsdata.pdf to determine how the superseded data were derived.
 HV0688
 HV0688_MARKER: DB = BENCH MARK DISK
 HV0688_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0688_SP_SET: CULVERT
 HV0688_STAMPING: C 41 1941
 HV0688_MARK LOGO: CGS
 HV0688_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0688
 HV0688  HISTORY     - Date     Condition        Report By
 HV0688  HISTORY     - 1941     MONUMENTED       CGS
 HV0688
 HV0688                          STATION DESCRIPTION
 HV0688
 HV0688'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0688'4.7 MI NW FROM LEONARDTOWN.
 HV0688'4.7 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST OFFICE
 HV0688'AT LEONARDTOWN, AT THE INTERSECTION OF HIGHWAY AND A SIDE ROAD
 HV0688'LEADING WEST TO A SCHOOL, SET IN THE NORTH CORNER OF THE WEST
 HV0688'HEAD-WALL OF 12-INCH CONCRETE CULVERT UNDER THE HIGHWAY, 118 FEET
 HV0688'SOUTH OF CENTER-LINE OF THE SIDE ROAD, 53.5 FEET NORTH OF THE
 HV0688'1ST. TELEPHONE POLE SOUTH OF THE INTERSECTION, 57 FEET NORTHWEST
 HV0688'OF POWER-LINE POLE NO. 857, 22 FEET EAST OF A 3-FOOT OAK TREE,
 HV0688'21.5 FEET WEST OF CENTERLINE OF THE HIGHWAY.  A STANDARD DISK
 HV0688'STAMPED C-41 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0689 ***********************************************************************
 HV0689  DESIGNATION -  C 41 RESET
 HV0689  PID         -  HV0689
 HV0689  STATE/COUNTY-  MD/ST MARYS
 HV0689  COUNTRY     -  US
 HV0689  USGS QUAD   -  LEONARDTOWN (2016)
 HV0689
 HV0689                         *CURRENT SURVEY CONTROL
 HV0689  ______________________________________________________________________
 HV0689* NAD 83(1986) POSITION- 38 20 23.     (N) 076 40 33.     (W)   SCALED
 HV0689* NAVD 88 ORTHO HEIGHT -    33.76  (+/-2cm)      110.8   (feet) VERTCON3
 HV0689  ______________________________________________________________________
 HV0689  GEOID HEIGHT    -        -33.786 (meters)                     GEOID18
 HV0689  VERT ORDER      -  THIRD (See Below)
 HV0689
 HV0689.The horizontal coordinates were scaled from a map and have
 HV0689.an estimated accuracy of +/- 6 seconds.
 HV0689
 HV0689.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0689.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0689
 HV0689.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0689.GEOID18 height accuracy estimate available here.
 HV0689
 HV0689.The vertical order pertains to the NGVD 29 superseded value.
 HV0689
 HV0689.Click photographs - Photos may exist for this station.
 HV0689
 HV0689;                    North         East    Units  Estimated Accuracy
 HV0689;SPC MD       -    74,760.      428,340.      MT  (+/- 180 meters Scaled)
 HV0689
 HV0689_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH535448(NAD 83)
 HV0689
 HV0689                          SUPERSEDED SURVEY CONTROL
 HV0689
 HV0689  NGVD 29 (??/??/??)   34.08   (m)          111.8    (f) RESET       3  
 HV0689
 HV0689.Superseded values are not recommended for survey control.
 HV0689
 HV0689.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0689.See file dsdata.pdf to determine how the superseded data were derived.
 HV0689
 HV0689_MARKER: DB = BENCH MARK DISK
 HV0689_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0689_STAMPING: C 41 RESET 1967
 HV0689_MARK LOGO: CGS
 HV0689_PROJECTION: FLUSH
 HV0689_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0689+STABILITY: SURFACE MOTION
 HV0689
 HV0689  HISTORY     - Date     Condition        Report By
 HV0689  HISTORY     - 1967     MONUMENTED       MDDT
 HV0689  HISTORY     - 20010210 MARK NOT FOUND   USPSQD
 HV0689
 HV0689                          STATION DESCRIPTION
 HV0689
 HV0689'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1967
 HV0689'4.8 MI NW FROM LEONARDTOWN.
 HV0689'4.75 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE COURTHOUSE IN
 HV0689'LEONARDTOWN, 116.7 FEET WEST OF THE CENTER LINE OF STATE HIGHWAY
 HV0689'5, 142.3 FEET WEST OF POLE 856, 87.3 FEET SOUTHWEST OF THE CENTER
 HV0689'LINE OF THE PICNIC DRIVE ROAD AT THE MIDDLE OF CURVE IN PICNIC
 HV0689'AREA, 27 FEET SOUTHEAST OF THE SOUTHEAST EDGE OF A SMALL STREAM,
 HV0689'20 FEET SOUTHEAST OF AN 18 INCH TREE (NOTCHED ON THE EAST SIDE),
 HV0689'192 FEET SOUTH OF THE CENTER LINE OF A DIRT ROAD ON THE NORTH SIDE
 HV0689'OF THE PICNIC AREA, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 HV0689'THE GROUND.
 HV0689
 HV0689                          STATION RECOVERY (2001)
 HV0689
 HV0689'RECOVERY NOTE BY US POWER SQUADRON 2001
 HV0689'LOCATED THE VICINITY OF THE BENCHMARK WITH GPS, BUT NONE OF THE
 HV0689'REFERENCES COULD BE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0020 ***********************************************************************
 JW0020  DESIGNATION -  C 43
 JW0020  PID         -  JW0020
 JW0020  STATE/COUNTY-  MD/WASHINGTON
 JW0020  COUNTRY     -  US
 JW0020  USGS QUAD   -  HANCOCK (2016)
 JW0020
 JW0020                         *CURRENT SURVEY CONTROL
 JW0020  ______________________________________________________________________
 JW0020* NAD 83(1986) POSITION- 39 40 48.     (N) 078 12 45.     (W)   SCALED
 JW0020* NAVD 88 ORTHO HEIGHT -   139.738 (meters)      458.46  (feet) ADJUSTED
 JW0020  ______________________________________________________________________
 JW0020  GEOID HEIGHT    -        -33.973 (meters)                     GEOID18
 JW0020  DYNAMIC HEIGHT  -        139.657 (meters)      458.19  (feet) COMP
 JW0020  MODELED GRAVITY -    980,045.1   (mgal)                       NAVD 88
 JW0020
 JW0020  VERT ORDER      -  FIRST     CLASS II
 JW0020
 JW0020.The horizontal coordinates were scaled from a map and have
 JW0020.an estimated accuracy of +/- 6 seconds.
 JW0020
 JW0020.The orthometric height was determined by differential leveling and
 JW0020.adjusted by the NATIONAL GEODETIC SURVEY
 JW0020.in June 1991.
 JW0020
 JW0020.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0020.GEOID18 height accuracy estimate available here.
 JW0020
 JW0020.Click photographs - Photos may exist for this station.
 JW0020
 JW0020.The dynamic height is computed by dividing the NAVD 88
 JW0020.geopotential number by the normal gravity value computed on the
 JW0020.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0020.degrees latitude (g = 980.6199 gals.).
 JW0020
 JW0020.The modeled gravity was interpolated from observed gravity values.
 JW0020
 JW0020;                    North         East    Units  Estimated Accuracy
 JW0020;SPC MD       -   224,190.      295,980.      MT  (+/- 180 meters Scaled)
 JW0020
 JW0020_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD390959(NAD 83)
 JW0020
 JW0020                          SUPERSEDED SURVEY CONTROL
 JW0020
 JW0020  NGVD 29 (??/??/92)  139.944  (m)          459.13   (f) ADJ UNCH    1 2
 JW0020
 JW0020.Superseded values are not recommended for survey control.
 JW0020
 JW0020.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0020.See file dsdata.pdf to determine how the superseded data were derived.
 JW0020
 JW0020_MARKER: DB = BENCH MARK DISK
 JW0020_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JW0020_STAMPING: C 43 1941
 JW0020_MARK LOGO: CGS
 JW0020_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0020
 JW0020  HISTORY     - Date     Condition        Report By
 JW0020  HISTORY     - 1941     MONUMENTED       CGS
 JW0020
 JW0020                          STATION DESCRIPTION
 JW0020
 JW0020'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0020'2.5 MI SW FROM HANCOCK.
 JW0020'2.5 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JW0020'THE STATION AT HANCOCK, AT A PUBLIC ROAD CROSSING, 8 RAILS
 JW0020'EAST OF MILE-POST NO. 118, 38 FEET SOUTH OF THE SOUTH RAIL OF THE
 JW0020'TRACK, 88 FEET EAST OF THE CENTER-LINE OF THE ROAD, 115 FEET
 JW0020'SOUTHWEST OF THE SOUTHEAST CORNER OF A PACKING SHED, 3.4 FEET
 JW0020'WEST OF A TELEGRAPH POLE, 1 FOOT EAST OF A WHITE MARKER POST
 JW0020'STENCILED U.S.B.M.  A STANDARD DISK STAMPED C-43 1941 AND SET
 JW0020'IN THE TOP OF A PRE-CAST CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0725 ***********************************************************************
 JV0725  DESIGNATION -  C 44
 JV0725  PID         -  JV0725
 JV0725  STATE/COUNTY-  MD/HOWARD
 JV0725  COUNTRY     -  US
 JV0725  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0725
 JV0725                         *CURRENT SURVEY CONTROL
 JV0725  ______________________________________________________________________
 JV0725* NAD 83(1986) POSITION- 39 15 32.     (N) 076 47 03.     (W)   SCALED
 JV0725* NAVD 88 ORTHO HEIGHT -    39.325 (meters)      129.02  (feet) ADJUSTED
 JV0725  ______________________________________________________________________
 JV0725  GEOID HEIGHT    -        -32.269 (meters)                     GEOID18
 JV0725  DYNAMIC HEIGHT  -         39.305 (meters)      128.95  (feet) COMP
 JV0725  MODELED GRAVITY -    980,100.8   (mgal)                       NAVD 88
 JV0725
 JV0725  VERT ORDER      -  FIRST     CLASS II
 JV0725
 JV0725.The horizontal coordinates were scaled from a map and have
 JV0725.an estimated accuracy of +/- 6 seconds.
 JV0725
 JV0725.The orthometric height was determined by differential leveling and
 JV0725.adjusted by the NATIONAL GEODETIC SURVEY
 JV0725.in June 1991.
 JV0725
 JV0725.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0725.GEOID18 height accuracy estimate available here.
 JV0725
 JV0725.Click photographs - Photos may exist for this station.
 JV0725
 JV0725.The dynamic height is computed by dividing the NAVD 88
 JV0725.geopotential number by the normal gravity value computed on the
 JV0725.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0725.degrees latitude (g = 980.6199 gals.).
 JV0725
 JV0725.The modeled gravity was interpolated from observed gravity values.
 JV0725
 JV0725;                    North         East    Units  Estimated Accuracy
 JV0725;SPC MD       -   176,770.      418,630.      MT  (+/- 180 meters Scaled)
 JV0725
 JV0725_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ460470(NAD 83)
 JV0725
 JV0725                          SUPERSEDED SURVEY CONTROL
 JV0725
 JV0725  NGVD 29 (11/26/84)   39.546  (m)          129.74   (f) ADJUSTED    1 2
 JV0725
 JV0725.Superseded values are not recommended for survey control.
 JV0725
 JV0725.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0725.See file dsdata.pdf to determine how the superseded data were derived.
 JV0725
 JV0725_STAMPING: C 44 1941
 JV0725_MARK LOGO: CGS
 JV0725
 JV0725  HISTORY     - Date     Condition        Report By
 JV0725  HISTORY     - 1941     MONUMENTED       CGS
 JV0725  HISTORY     - 19980520 MARK NOT FOUND   MDSHA
 JV0725  HISTORY     - 20180716 MARK NOT FOUND   MDDNR
 JV0725
 JV0725                          STATION DESCRIPTION
 JV0725
 JV0725'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0725'0.9 MI SE FROM ELLICOTT CITY.
 JV0725'ABOUT 0.9 MILE SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0725'FROM ELLICOTT CITY, HOWARD COUNTY, ABOUT 20 RAILS WEST OF A
 JV0725'STONE WATER TOWER AT THE ABANDONED STATION AT GRAY, ABOUT 390
 JV0725'FEET EAST OF A SMALL STREAM, ABOUT 210 FEET EAST OF THE EAST WALL
 JV0725'OF AN OLD STONE BUILDING, 56.6 FEET SOUTH OF THE SOUTH RAIL OF
 JV0725'THE EAST-BOUND TRACK, 4 FEET FROM THE BASE OF A TWIN-TRUNKED
 JV0725'WHITE POPLAR TREE, NEAR A FOOTPATH LEADING OVER A BLUFF, IN
 JV0725'THE TOP OF A SMALL BOULDER, AND ABOUT LEVEL WITH THE TOP OF THE
 JV0725'RAIL.  A STANDARD DISK, STAMPED C 44 1941.
 JV0725
 JV0725                          STATION RECOVERY (1998)
 JV0725
 JV0725'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV0725'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE AREA DOES NOT
 JV0725'APPEAR TO HAVE CHANGED AND A FIBERGLASS WITNESS POST WAS FOUND NEXT TO
 JV0725'THE RAILROAD TRACKS AT THE DESCRIBED LOCATION BUT NO EVIDENCE OF THE
 JV0725'DISK WAS RECOVERED.
 JV0725
 JV0725                          STATION RECOVERY (2018)
 JV0725
 JV0725'RECOVERY NOTE BY MD DEPT OF NAT RES 2018 (WAC)
 JV0725'ONE-HALF OF THE TWIN POPLAR TREE HAS FALLEN OVER A NEARBY BOULDER AND
 JV0725'THE APPARENT LOCATION OF THE DISK.  A SECOND LARGE TREE HAS ALSO
 JV0725'FALLEN NEARBY.  DISK MAY BE AVAILABLE WITH REMOVAL OF TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0014 ***********************************************************************
 JW0014  DESIGNATION -  C 448
 JW0014  PID         -  JW0014
 JW0014  STATE/COUNTY-  MD/WASHINGTON
 JW0014  COUNTRY     -  US
 JW0014  USGS QUAD   -  HANCOCK (2016)
 JW0014
 JW0014                         *CURRENT SURVEY CONTROL
 JW0014  ______________________________________________________________________
 JW0014* NAD 83(1986) POSITION- 39 41 56.2    (N) 078 10 46.2    (W)   HD_HELD2
 JW0014* NAVD 88 ORTHO HEIGHT -   136.417 (meters)      447.56  (feet) ADJUSTED
 JW0014  ______________________________________________________________________
 JW0014  GEOID HEIGHT    -        -34.026 (meters)                     GEOID18
 JW0014  DYNAMIC HEIGHT  -        136.339 (meters)      447.31  (feet) COMP
 JW0014  MODELED GRAVITY -    980,052.2   (mgal)                       NAVD 88
 JW0014
 JW0014  VERT ORDER      -  FIRST     CLASS II
 JW0014
 JW0014.The horizontal coordinates were established by autonomous hand held GPS
 JW0014.observations and have an estimated accuracy of +/- 10 meters.
 JW0014
 JW0014.The orthometric height was determined by differential leveling and
 JW0014.adjusted by the NATIONAL GEODETIC SURVEY
 JW0014.in June 1991.
 JW0014
 JW0014.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0014.GEOID18 height accuracy estimate available here.
 JW0014
 JW0014.Click photographs - Photos may exist for this station.
 JW0014
 JW0014.The dynamic height is computed by dividing the NAVD 88
 JW0014.geopotential number by the normal gravity value computed on the
 JW0014.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0014.degrees latitude (g = 980.6199 gals.).
 JW0014
 JW0014.The modeled gravity was interpolated from observed gravity values.
 JW0014
 JW0014;                    North         East    Units  Estimated Accuracy
 JW0014;SPC MD       -   226,257.      298,834.      MT  (+/- 10 meters HH2 GPS)
 JW0014
 JW0014_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD4182998147(NAD 83)
 JW0014
 JW0014                          SUPERSEDED SURVEY CONTROL
 JW0014
 JW0014  NGVD 29 (??/??/92)  136.624  (m)          448.24   (f) ADJ UNCH    1 2
 JW0014
 JW0014.Superseded values are not recommended for survey control.
 JW0014
 JW0014.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0014.See file dsdata.pdf to determine how the superseded data were derived.
 JW0014
 JW0014_MARKER: DB = BENCH MARK DISK
 JW0014_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0014_SP_SET: BUILDING
 JW0014_STAMPING: MARYLAND C 448
 JW0014_MARK LOGO: USGS
 JW0014_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0014_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0014+SATELLITE: SATELLITE OBSERVATIONS - April 01, 2015
 JW0014
 JW0014  HISTORY     - Date     Condition        Report By
 JW0014  HISTORY     - 1898     MONUMENTED       USGS
 JW0014  HISTORY     - 1960     GOOD             CGS
 JW0014  HISTORY     - 1983     GOOD             NGS
 JW0014  HISTORY     - 20070406 GOOD             GEOCAC
 JW0014  HISTORY     - 20110501 GOOD             GEOCAC
 JW0014  HISTORY     - 20110621 GOOD             MDSHA
 JW0014  HISTORY     - 20150401 GOOD             RODCON
 JW0014
 JW0014                          STATION DESCRIPTION
 JW0014
 JW0014'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JW0014'AT HANCOCK.
 JW0014'AT HANCOCK, AT THE HANCOCK BANK, SET VERTICALLY IN THE FRONT
 JW0014'OF THE NORTH FACE OF THE BANK, 13.8 FEET SOUTH OF THE SOUTH
 JW0014'CURB OF MAIN STREET, 1.7 FEET WEST OF THE WEST EDGE OF THE
 JW0014'FRONT DOOR, 1.2 FEET ABOVE THE SIDEWALK LEVEL.  A STANDARD
 JW0014'DISK STAMPED MARYLAND C-448.
 JW0014
 JW0014                          STATION RECOVERY (1983)
 JW0014
 JW0014'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0014'RECOVERED IN GOOD CONDITION, THE DESCRIPTION IS ADEQUATE EXCEPT, THE
 JW0014'BANK IS NOW THE FIRST NATIONAL BANK.  STAMPING IS C 448.
 JW0014
 JW0014                          STATION RECOVERY (2007)
 JW0014
 JW0014'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JW0014'RECOVERED IN GOOD CONDITION.
 JW0014
 JW0014                          STATION RECOVERY (2011)
 JW0014
 JW0014'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JW0014'RECOVERED AS DESCRIBED.
 JW0014
 JW0014                          STATION RECOVERY (2011)
 JW0014
 JW0014'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2011 (TPB)
 JW0014'RECOVERED AS DESCRIBED.
 JW0014
 JW0014                          STATION RECOVERY (2015)
 JW0014
 JW0014'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 JW0014'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0755 ***********************************************************************
 JV0755  DESIGNATION -  C 45
 JV0755  PID         -  JV0755
 JV0755  STATE/COUNTY-  MD/CARROLL
 JV0755  COUNTRY     -  US
 JV0755  USGS QUAD   -  FINKSBURG (2016)
 JV0755
 JV0755                         *CURRENT SURVEY CONTROL
 JV0755  ______________________________________________________________________
 JV0755* NAD 83(1986) POSITION- 39 24 00.     (N) 076 57 11.     (W)   SCALED
 JV0755* NAVD 88 ORTHO HEIGHT -   180.111 (meters)      590.91  (feet) ADJUSTED
 JV0755  ______________________________________________________________________
 JV0755  GEOID HEIGHT    -        -31.965 (meters)                     GEOID18
 JV0755  DYNAMIC HEIGHT  -        180.017 (meters)      590.61  (feet) COMP
 JV0755  MODELED GRAVITY -    980,102.4   (mgal)                       NAVD 88
 JV0755
 JV0755  VERT ORDER      -  SECOND    CLASS 0
 JV0755
 JV0755.The horizontal coordinates were scaled from a map and have
 JV0755.an estimated accuracy of +/- 6 seconds.
 JV0755
 JV0755.The orthometric height was determined by differential leveling and
 JV0755.adjusted by the NATIONAL GEODETIC SURVEY
 JV0755.in June 1991.
 JV0755
 JV0755.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0755.GEOID18 height accuracy estimate available here.
 JV0755
 JV0755.Click photographs - Photos may exist for this station.
 JV0755
 JV0755.The dynamic height is computed by dividing the NAVD 88
 JV0755.geopotential number by the normal gravity value computed on the
 JV0755.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0755.degrees latitude (g = 980.6199 gals.).
 JV0755
 JV0755.The modeled gravity was interpolated from observed gravity values.
 JV0755
 JV0755;                    North         East    Units  Estimated Accuracy
 JV0755;SPC MD       -   192,410.      404,040.      MT  (+/- 180 meters Scaled)
 JV0755
 JV0755_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ318629(NAD 83)
 JV0755
 JV0755                          SUPERSEDED SURVEY CONTROL
 JV0755
 JV0755  NGVD 29 (11/26/84)  180.316  (m)          591.59   (f) ADJUSTED    2 0
 JV0755
 JV0755.Superseded values are not recommended for survey control.
 JV0755
 JV0755.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0755.See file dsdata.pdf to determine how the superseded data were derived.
 JV0755
 JV0755_MARKER: DB = BENCH MARK DISK
 JV0755_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0755_STAMPING: C 45 1941
 JV0755_MARK LOGO: CGS
 JV0755_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0755+STABILITY: SURFACE MOTION
 JV0755
 JV0755  HISTORY     - Date     Condition        Report By
 JV0755  HISTORY     - 1941     MONUMENTED       CGS
 JV0755  HISTORY     - 1942     GOOD             CGS
 JV0755  HISTORY     - 19990603 MARK NOT FOUND   MDSHA
 JV0755
 JV0755                          STATION DESCRIPTION
 JV0755
 JV0755'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0755'0.3 MI S FROM ELDERSBURG.
 JV0755'0.3 MILE SOUTH ALONG STATE HIGHWAY 32 FROM THE CROSSING OF STATE
 JV0755'HIGHWAY 26 AT ELDERSBURG, CARROLL COUNTY, AT THE JUNCTION OF A
 JV0755'ROAD LEADING EAST, 25.6 FEET WEST OF THE CENTER LINE OF THE
 JV0755'HIGHWAY, 10.2 FEET NORTH OF AN IRON GATE, AT A FENCE CORNER, 1.8
 JV0755'FEET WEST OF THE RIGHT-OF-WAY FENCE, AND 2.9 FEET SOUTHWEST OF
 JV0755'A WHITE WOODEN POST STENCILED U.S.B.M.  A STANDARD DISK, STAMPED
 JV0755'C 45 1941 AND SET IN THE TOP OF A CONCRETE POST.
 JV0755
 JV0755                          STATION RECOVERY (1942)
 JV0755
 JV0755'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV0755'RECOVERED IN GOOD CONDITION.
 JV0755
 JV0755                          STATION RECOVERY (1999)
 JV0755
 JV0755'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV0755'THE MARK WAS SEARCHED FOR AND NOT RECOVERED.  IT APPEARS THE MARK HAS
 JV0755'BEEN DESTROYED BY ROAD IMPROVEMENTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2145 ***********************************************************************
 JV2145  DESIGNATION -  C 46
 JV2145  PID         -  JV2145
 JV2145  STATE/COUNTY-  MD/FREDERICK
 JV2145  COUNTRY     -  US
 JV2145  USGS QUAD   -  URBANA (2016)
 JV2145
 JV2145                         *CURRENT SURVEY CONTROL
 JV2145  ______________________________________________________________________
 JV2145* NAD 83(1986) POSITION- 39 21 19.     (N) 077 21 35.     (W)   SCALED
 JV2145* NAVD 88 ORTHO HEIGHT -    88.927 (meters)      291.75  (feet) ADJUSTED
 JV2145  ______________________________________________________________________
 JV2145  GEOID HEIGHT    -        -32.445 (meters)                     GEOID18
 JV2145  DYNAMIC HEIGHT  -         88.879 (meters)      291.60  (feet) COMP
 JV2145  MODELED GRAVITY -    980,087.2   (mgal)                       NAVD 88
 JV2145
 JV2145  VERT ORDER      -  FIRST     CLASS II
 JV2145
 JV2145.The horizontal coordinates were scaled from a map and have
 JV2145.an estimated accuracy of +/- 6 seconds.
 JV2145
 JV2145.The orthometric height was determined by differential leveling and
 JV2145.adjusted by the NATIONAL GEODETIC SURVEY
 JV2145.in June 1991.
 JV2145
 JV2145.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2145.GEOID18 height accuracy estimate available here.
 JV2145
 JV2145.Click photographs - Photos may exist for this station.
 JV2145
 JV2145.The dynamic height is computed by dividing the NAVD 88
 JV2145.geopotential number by the normal gravity value computed on the
 JV2145.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2145.degrees latitude (g = 980.6199 gals.).
 JV2145
 JV2145.The modeled gravity was interpolated from observed gravity values.
 JV2145
 JV2145;                    North         East    Units  Estimated Accuracy
 JV2145;SPC MD       -   187,510.      369,000.      MT  (+/- 180 meters Scaled)
 JV2145
 JV2145_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ966588(NAD 83)
 JV2145
 JV2145                          SUPERSEDED SURVEY CONTROL
 JV2145
 JV2145  NGVD 29 (11/26/84)   89.145  (m)          292.47   (f) ADJUSTED    1 2
 JV2145
 JV2145.Superseded values are not recommended for survey control.
 JV2145
 JV2145.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2145.See file dsdata.pdf to determine how the superseded data were derived.
 JV2145
 JV2145_MARKER: DB = BENCH MARK DISK
 JV2145_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2145_STAMPING: C 46 1941
 JV2145_MARK LOGO: CGS
 JV2145_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2145+STABILITY: SURFACE MOTION
 JV2145
 JV2145  HISTORY     - Date     Condition        Report By
 JV2145  HISTORY     - 1941     MONUMENTED       CGS
 JV2145
 JV2145                          STATION DESCRIPTION
 JV2145
 JV2145'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2145'2.1 MI E FROM FREDERICK JUNCTION.
 JV2145'ABOUT 2.1 MILES EAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2145'THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, 33.0 FEET
 JV2145'NORTHWEST OF THE CENTER OF A ROAD CROSSING, 23.5 FEET NORTH OF
 JV2145'THE NORTH RAIL OF THE WEST-BOUND TRACK, 11.0 FEET WEST OF A LANE
 JV2145'LEADING NORTH, 1.5 FEET FROM THE SOUTHEAST CORNER FENCE POST OF
 JV2145'A PASTURE, AND 2.0 FEET SOUTHWEST OF A WHITE WOODEN POST STENCILED
 JV2145'U.S.B.M.  A STANDARD DISK, STAMPED C 46 1941 AND SET IN THE TOP
 JV2145'OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0392 ***********************************************************************
 JW0392  DESIGNATION -  C 47
 JW0392  PID         -  JW0392
 JW0392  STATE/COUNTY-  MD/ALLEGANY
 JW0392  COUNTRY     -  US
 JW0392  USGS QUAD   -  PATTERSON CREEK (2016)
 JW0392
 JW0392                         *CURRENT SURVEY CONTROL
 JW0392  ______________________________________________________________________
 JW0392* NAD 83(1986) POSITION- 39 34 04.     (N) 078 43 14.     (W)   SCALED
 JW0392* NAVD 88 ORTHO HEIGHT -   191.591 (meters)      628.58  (feet) ADJUSTED
 JW0392  ______________________________________________________________________
 JW0392  GEOID HEIGHT    -        -32.916 (meters)                     GEOID18
 JW0392  DYNAMIC HEIGHT  -        191.478 (meters)      628.21  (feet) COMP
 JW0392  MODELED GRAVITY -    980,036.0   (mgal)                       NAVD 88
 JW0392
 JW0392  VERT ORDER      -  FIRST     CLASS II
 JW0392
 JW0392.The horizontal coordinates were scaled from a map and have
 JW0392.an estimated accuracy of +/- 6 seconds.
 JW0392
 JW0392.The orthometric height was determined by differential leveling and
 JW0392.adjusted by the NATIONAL GEODETIC SURVEY
 JW0392.in June 1991.
 JW0392
 JW0392.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0392.GEOID18 height accuracy estimate available here.
 JW0392
 JW0392.Click photographs - Photos may exist for this station.
 JW0392
 JW0392.The dynamic height is computed by dividing the NAVD 88
 JW0392.geopotential number by the normal gravity value computed on the
 JW0392.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0392.degrees latitude (g = 980.6199 gals.).
 JW0392
 JW0392.The modeled gravity was interpolated from observed gravity values.
 JW0392
 JW0392;                    North         East    Units  Estimated Accuracy
 JW0392;SPC MD       -   212,430.      252,160.      MT  (+/- 180 meters Scaled)
 JW0392
 JW0392_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD958822(NAD 83)
 JW0392
 JW0392                          SUPERSEDED SURVEY CONTROL
 JW0392
 JW0392  NGVD 29 (??/??/92)  191.784  (m)          629.21   (f) ADJ UNCH    1 2
 JW0392
 JW0392.Superseded values are not recommended for survey control.
 JW0392
 JW0392.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0392.See file dsdata.pdf to determine how the superseded data were derived.
 JW0392
 JW0392_MARKER: DB = BENCH MARK DISK
 JW0392_SETTING: 66 = SET IN ROCK OUTCROP
 JW0392_STAMPING: C 47 1941
 JW0392_MARK LOGO: CGS
 JW0392_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW0392+STABILITY: POSITION/ELEVATION WELL
 JW0392
 JW0392  HISTORY     - Date     Condition        Report By
 JW0392  HISTORY     - 1941     MONUMENTED       CGS
 JW0392  HISTORY     - 20010724 MARK NOT FOUND   MDSHA
 JW0392  HISTORY     - 20021002 GOOD             MDSHA
 JW0392
 JW0392                          STATION DESCRIPTION
 JW0392
 JW0392'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0392'7.1 MI NW FROM OLDTOWN.
 JW0392'7.1 MILES NORTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0392'STATION AT OLDTOWN, 48 FEET SOUTHEAST OF MILE-POST NO. 158, SET
 JW0392'IN A LARGE ROCK BOULDER ABOUT TRACK LEVEL, AT THE NORTHWEST END
 JW0392'OF A DEEP CUT, AT A PRIVATE ROAD CROSSING, 93 FEET SOUTHEAST
 JW0392'OF THE CENTER-LINE OF THE ROAD, 9.9 FEET SOUTHWEST OF THE
 JW0392'SOUTHWEST RAIL OF THE TRACK.  A STANDARD DISK STAMPED C-47 1941.
 JW0392
 JW0392                          STATION RECOVERY (2001)
 JW0392
 JW0392'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JW0392'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE RAILROAD TRACKS
 JW0392'AND ROCK OUTCROP APPEARS TO HAVE BEEN REMOVED.  THE AREA IS NOW A
 JW0392'GRASS LAWN.
 JW0392
 JW0392                          STATION RECOVERY (2002)
 JW0392
 JW0392'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (DGB)
 JW0392'MARK WAS RECOVERED IN GOOD CONDITION WITH THE FOLLOWING UPDATES. TO
 JW0392'REACH FROM THE INTERSECTION OF MD 51 AND COLLIERS RUN RD, GO NORTH ON
 JW0392'COLLIERS RUN RD FOR 0.18 MILES TO AN ABANDONED RR BED. THE OLD RR
 JW0392'TRACKS ARE GONE. THE MARK IS NOW 59 FT SOUTHEAST OF MILEPOST NO. 158,
 JW0392'WHICH IS A 6 FT HIGH RR RAIL SET VERTICALLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7763 ***********************************************************************
 HV7763  DESIGNATION -  C 48
 HV7763  PID         -  HV7763
 HV7763  STATE/COUNTY-  MD/ST MARYS
 HV7763  COUNTRY     -  US
 HV7763  USGS QUAD   -  ROCK POINT (2016)
 HV7763
 HV7763                         *CURRENT SURVEY CONTROL
 HV7763  ______________________________________________________________________
 HV7763* NAD 83(1986) POSITION- 38 17 52.     (N) 076 46 55.     (W)   SCALED
 HV7763* NAVD 88 ORTHO HEIGHT -    41.632 (meters)      136.59  (feet) ADJUSTED
 HV7763  ______________________________________________________________________
 HV7763  GEOID HEIGHT    -        -33.705 (meters)                     GEOID18
 HV7763  DYNAMIC HEIGHT  -         41.607 (meters)      136.51  (feet) COMP
 HV7763  MODELED GRAVITY -    980,020.4   (mgal)                       NAVD 88
 HV7763
 HV7763  VERT ORDER      -  SECOND    CLASS 0
 HV7763
 HV7763.The horizontal coordinates were scaled from a map and have
 HV7763.an estimated accuracy of +/- 6 seconds.
 HV7763
 HV7763.The orthometric height was determined by differential leveling and
 HV7763.adjusted by the NATIONAL GEODETIC SURVEY
 HV7763.in June 1991.
 HV7763
 HV7763.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7763.GEOID18 height accuracy estimate available here.
 HV7763
 HV7763.Click photographs - Photos may exist for this station.
 HV7763
 HV7763.The dynamic height is computed by dividing the NAVD 88
 HV7763.geopotential number by the normal gravity value computed on the
 HV7763.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7763.degrees latitude (g = 980.6199 gals.).
 HV7763
 HV7763.The modeled gravity was interpolated from observed gravity values.
 HV7763
 HV7763;                    North         East    Units  Estimated Accuracy
 HV7763;SPC MD       -    70,080.      419,080.      MT  (+/- 180 meters Scaled)
 HV7763
 HV7763_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH441403(NAD 83)
 HV7763
 HV7763                          SUPERSEDED SURVEY CONTROL
 HV7763
 HV7763  NGVD 29 (11/26/84)   41.910  (m)          137.50   (f) ADJUSTED    2 0
 HV7763
 HV7763.Superseded values are not recommended for survey control.
 HV7763
 HV7763.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7763.See file dsdata.pdf to determine how the superseded data were derived.
 HV7763
 HV7763_MARKER: DB = BENCH MARK DISK
 HV7763_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7763_STAMPING: C 48 1942
 HV7763_MARK LOGO: CGS
 HV7763_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7763+STABILITY: SURFACE MOTION
 HV7763
 HV7763  HISTORY     - Date     Condition        Report By
 HV7763  HISTORY     - 1942     MONUMENTED       CGS
 HV7763
 HV7763                          STATION DESCRIPTION
 HV7763
 HV7763'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV7763'6.5 MI S FROM CHAPTICO.
 HV7763'THIS MARK IS ALONG HIGHWAY 238 ABOUT 6.5 MILES SOUTH OF THE
 HV7763'INTERSECTION AT CHAPTICO, SAINT MARYS COUNTY, 0.2 MILE NORTH OF
 HV7763'BUSHWOOD, 0.1 MILE NORTHWEST OF A LARGE THREE STORY GRAY FARM
 HV7763'HOUSE, AT THE NORTHEAST CORNER OF A CULTIVATED FIELD, AT A ROAD
 HV7763'LEADING SOUTHWEST TO THE BARN THROUGH AN IRON GATE, 30 FEET
 HV7763'SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, 23 FEET SOUTHEAST
 HV7763'OF THE CENTER LINE OF THE DIRT ROAD, NEAR A POPLAR TREE, AND IS
 HV7763'A STANDARD DISK SET IN THE TOP OF A CONCRETE POST ABOUT 3 FEET
 HV7763'FROM A WHITE WOODEN POST STENCILED USBM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0707 ***********************************************************************
 HV0707  DESIGNATION -  C 49
 HV0707  PID         -  HV0707
 HV0707  STATE/COUNTY-  MD/CHARLES
 HV0707  COUNTRY     -  US
 HV0707  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0707
 HV0707                         *CURRENT SURVEY CONTROL
 HV0707  ______________________________________________________________________
 HV0707* NAD 83(1986) POSITION- 38 26 52.     (N) 076 51 49.     (W)   SCALED
 HV0707* NAVD 88 ORTHO HEIGHT -    49.383 (meters)      162.02  (feet) ADJUSTED
 HV0707  ______________________________________________________________________
 HV0707  GEOID HEIGHT    -        -33.493 (meters)                     GEOID18
 HV0707  DYNAMIC HEIGHT  -         49.352 (meters)      161.92  (feet) COMP
 HV0707  MODELED GRAVITY -    980,009.3   (mgal)                       NAVD 88
 HV0707
 HV0707  VERT ORDER      -  SECOND    CLASS 0
 HV0707
 HV0707.The horizontal coordinates were scaled from a map and have
 HV0707.an estimated accuracy of +/- 6 seconds.
 HV0707
 HV0707.The orthometric height was determined by differential leveling and
 HV0707.adjusted by the NATIONAL GEODETIC SURVEY
 HV0707.in June 1991.
 HV0707
 HV0707.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0707.GEOID18 height accuracy estimate available here.
 HV0707
 HV0707.Click photographs - Photos may exist for this station.
 HV0707
 HV0707.The dynamic height is computed by dividing the NAVD 88
 HV0707.geopotential number by the normal gravity value computed on the
 HV0707.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0707.degrees latitude (g = 980.6199 gals.).
 HV0707
 HV0707.The modeled gravity was interpolated from observed gravity values.
 HV0707
 HV0707;                    North         East    Units  Estimated Accuracy
 HV0707;SPC MD       -    86,720.      411,910.      MT  (+/- 180 meters Scaled)
 HV0707
 HV0707_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH373571(NAD 83)
 HV0707
 HV0707                          SUPERSEDED SURVEY CONTROL
 HV0707
 HV0707  NGVD 29 (11/26/84)   49.659  (m)          162.92   (f) ADJUSTED    2 0
 HV0707
 HV0707.Superseded values are not recommended for survey control.
 HV0707
 HV0707.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0707.See file dsdata.pdf to determine how the superseded data were derived.
 HV0707
 HV0707_MARKER: DB = BENCH MARK DISK
 HV0707_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0707_SP_SET: CULVERT
 HV0707_STAMPING: C 49 1942
 HV0707_MARK LOGO: CGS
 HV0707_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0707
 HV0707  HISTORY     - Date     Condition        Report By
 HV0707  HISTORY     - 1942     MONUMENTED       CGS
 HV0707
 HV0707                          STATION DESCRIPTION
 HV0707
 HV0707'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0707'2.7 MI N FROM WICOMICO.
 HV0707'THIS MARK IS ABOUT 2.7 MILES NORTH OF THE HIGHWAY JUNCTION AT
 HV0707'WICOMICO, CHARLES COUNTY, ALONG A TAR ROAD, 0.2 MILE NORTH OF A
 HV0707'AIR BEACON, 0.1 MILE SOUTH OF A BRICK CHURCH AND CEMETERY, SET IN
 HV0707'THE SOUTH END OF THE WEST HEADWALL OF A CONCRETE CULVERT AND IS
 HV0707'A STANDARD DISK SET IN A DRILL HOLE ABOUT 8 INCHES LOWER THAN
 HV0707'THE LEVEL OF THE PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0283 ***********************************************************************
 HU0283  DESIGNATION -  C 5
 HU0283  PID         -  HU0283
 HU0283  STATE/COUNTY-  MD/WORCESTER
 HU0283  COUNTRY     -  US
 HU0283  USGS QUAD   -  BERLIN (2016)
 HU0283
 HU0283                         *CURRENT SURVEY CONTROL
 HU0283  ______________________________________________________________________
 HU0283* NAD 83(1986) POSITION- 38 19 31.0    (N) 075 13 09.7    (W)   HD_HELD2
 HU0283* NAVD 88 ORTHO HEIGHT -    13.523 (meters)       44.37  (feet) ADJUSTED
 HU0283  ______________________________________________________________________
 HU0283  GEOID HEIGHT    -        -36.030 (meters)                     GEOID18
 HU0283  DYNAMIC HEIGHT  -         13.514 (meters)       44.34  (feet) COMP
 HU0283  MODELED GRAVITY -    980,005.0   (mgal)                       NAVD 88
 HU0283
 HU0283  VERT ORDER      -  SECOND    CLASS 0
 HU0283
 HU0283.The horizontal coordinates were established by autonomous hand held GPS
 HU0283.observations and have an estimated accuracy of +/- 10 meters.
 HU0283
 HU0283.The orthometric height was determined by differential leveling and
 HU0283.adjusted by the NATIONAL GEODETIC SURVEY
 HU0283.in June 1991.
 HU0283
 HU0283.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0283.GEOID18 height accuracy estimate available here.
 HU0283
 HU0283.Click photographs - Photos may exist for this station.
 HU0283
 HU0283.The dynamic height is computed by dividing the NAVD 88
 HU0283.geopotential number by the normal gravity value computed on the
 HU0283.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0283.degrees latitude (g = 980.6199 gals.).
 HU0283
 HU0283.The modeled gravity was interpolated from observed gravity values.
 HU0283
 HU0283;                    North         East    Units  Estimated Accuracy
 HU0283;SPC MD       -    74,627.      555,694.      MT  (+/- 10 meters HH2 GPS)
 HU0283
 HU0283_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8082641929(NAD 83)
 HU0283
 HU0283                          SUPERSEDED SURVEY CONTROL
 HU0283
 HU0283  NGVD 29 (11/26/84)   13.766  (m)           45.16   (f) ADJUSTED    2 0
 HU0283
 HU0283.Superseded values are not recommended for survey control.
 HU0283
 HU0283.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0283.See file dsdata.pdf to determine how the superseded data were derived.
 HU0283
 HU0283_MARKER: DB = BENCH MARK DISK
 HU0283_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0283_SP_SET: STEP
 HU0283_STAMPING: C 5 1935
 HU0283_MARK LOGO: CGS
 HU0283_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0283_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0283+SATELLITE: SATELLITE OBSERVATIONS - September 21, 2023
 HU0283
 HU0283  HISTORY     - Date     Condition        Report By
 HU0283  HISTORY     - 1935     MONUMENTED       CGS
 HU0283  HISTORY     - 1942     GOOD             CGS
 HU0283  HISTORY     - 1968     GOOD             CGS
 HU0283  HISTORY     - 20080814 GOOD             MDSHA
 HU0283  HISTORY     - 20090616 GOOD             GEOCAC
 HU0283  HISTORY     - 20131010 GOOD             ARCSHE
 HU0283  HISTORY     - 20230921 GOOD             BASE9
 HU0283
 HU0283                          STATION DESCRIPTION
 HU0283
 HU0283'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0283'AT BERLIN.
 HU0283'AT BERLIN, WORCESTER COUNTY, AT THE INTERSECTION OF NORTH MAIN
 HU0283'AND PITT STREETS, 25 FEET WEST OF THE CENTERLINE OF NORTH MAIN
 HU0283'STREET, 30 FEET SOUTH OF THE CENTERLINE OF PITT STREET AT THE
 HU0283'CALVIN B. TAYLOR BANK, AND IN THE SOUTH END OF THE FIRST STEP
 HU0283'OF THE MAIN ENTRANCE.  A STANDARD DISK, STAMPED C 5 1935.
 HU0283
 HU0283                          STATION RECOVERY (1968)
 HU0283
 HU0283'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968
 HU0283'RECOVERED IN GOOD CONDITION.
 HU0283
 HU0283                          STATION RECOVERY (2008)
 HU0283
 HU0283'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (MEW)
 HU0283'RECOVERED IN GOOD CONDITION.
 HU0283
 HU0283                          STATION RECOVERY (2009)
 HU0283
 HU0283'RECOVERY NOTE BY GEOCACHING 2009 (DER)
 HU0283'FOUND THIS ONE WHILE WANDERING AROUND BERLIN, MD.  USED THE
 HU0283'DESCRIPTION.
 HU0283
 HU0283                          STATION RECOVERY (2013)
 HU0283
 HU0283'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU0283'RECOVERED IN GOOD CONDITION.
 HU0283
 HU0283                          STATION RECOVERY (2023)
 HU0283
 HU0283'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2023 (DRD)
 HU0283'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0646 ***********************************************************************
 HV0646  DESIGNATION -  C 50
 HV0646  PID         -  HV0646
 HV0646  STATE/COUNTY-  MD/CHARLES
 HV0646  COUNTRY     -  US
 HV0646  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV0646
 HV0646                         *CURRENT SURVEY CONTROL
 HV0646  ______________________________________________________________________
 HV0646* NAD 83(1986) POSITION- 38 20 52.     (N) 076 57 39.     (W)   SCALED
 HV0646* NAVD 88 ORTHO HEIGHT -     4.614 (meters)       15.14  (feet) ADJUSTED
 HV0646  ______________________________________________________________________
 HV0646  GEOID HEIGHT    -        -33.483 (meters)                     GEOID18
 HV0646  DYNAMIC HEIGHT  -          4.611 (meters)       15.13  (feet) COMP
 HV0646  MODELED GRAVITY -    980,004.4   (mgal)                       NAVD 88
 HV0646
 HV0646  VERT ORDER      -  SECOND    CLASS 0
 HV0646
 HV0646.The horizontal coordinates were scaled from a map and have
 HV0646.an estimated accuracy of +/- 6 seconds.
 HV0646
 HV0646.The orthometric height was determined by differential leveling and
 HV0646.adjusted by the NATIONAL GEODETIC SURVEY
 HV0646.in June 1991.
 HV0646
 HV0646.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0646.GEOID18 height accuracy estimate available here.
 HV0646
 HV0646.Click photographs - Photos may exist for this station.
 HV0646
 HV0646.The dynamic height is computed by dividing the NAVD 88
 HV0646.geopotential number by the normal gravity value computed on the
 HV0646.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0646.degrees latitude (g = 980.6199 gals.).
 HV0646
 HV0646.The modeled gravity was interpolated from observed gravity values.
 HV0646
 HV0646;                    North         East    Units  Estimated Accuracy
 HV0646;SPC MD       -    75,610.      403,420.      MT  (+/- 180 meters Scaled)
 HV0646
 HV0646_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH286462(NAD 83)
 HV0646
 HV0646                          SUPERSEDED SURVEY CONTROL
 HV0646
 HV0646  NGVD 29 (11/26/84)    4.879  (m)           16.01   (f) ADJUSTED    2 0
 HV0646
 HV0646.Superseded values are not recommended for survey control.
 HV0646
 HV0646.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0646.See file dsdata.pdf to determine how the superseded data were derived.
 HV0646
 HV0646_MARKER: DB = BENCH MARK DISK
 HV0646_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0646_STAMPING: C 50 1942
 HV0646_MARK LOGO: CGS
 HV0646_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0646+STABILITY: SURFACE MOTION
 HV0646
 HV0646  HISTORY     - Date     Condition        Report By
 HV0646  HISTORY     - 1942     MONUMENTED       CGS
 HV0646
 HV0646                          STATION DESCRIPTION
 HV0646
 HV0646'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0646'1.5 MI W FROM WAYSIDE.
 HV0646'THIS MARK IS ALONG THE MORGANTOWN ROAD, ABOUT 1.5 MILES WEST OF
 HV0646'THE WYE JUNCTION AT WAYSIDE, CHARLES COUNTY, ACROSS THE HIGHWAY
 HV0646'FROM AN ABANDONED TAR ROAD, ACROSS THE HIGHWAY FROM 3 LARGE
 HV0646'CEDARS, 27 FEET SOUTH OF THE CENTER LINE OF THE ROAD, 14.2
 HV0646'FEET SOUTHWEST OF A 10-INCH BLAZED OAK TREE, AND IS A STANDARD
 HV0646'DISK SET IN THE TOP OF A CONCRETE POST ABOUT 3 FEET FROM A
 HV0646'STANDARD REFERENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0265 ***********************************************************************
 HV0265  DESIGNATION -  C 51
 HV0265  PID         -  HV0265
 HV0265  STATE/COUNTY-  MD/DORCHESTER
 HV0265  COUNTRY     -  US
 HV0265  USGS QUAD   -  CAMBRIDGE (2016)
 HV0265
 HV0265                         *CURRENT SURVEY CONTROL
 HV0265  ______________________________________________________________________
 HV0265* NAD 83(1986) POSITION- 38 33 00.     (N) 076 05 04.     (W)   SCALED
 HV0265* NAVD 88 ORTHO HEIGHT -     3.706 (meters)       12.16  (feet) ADJUSTED
 HV0265  ______________________________________________________________________
 HV0265  GEOID HEIGHT    -        -35.056 (meters)                     GEOID18
 HV0265  DYNAMIC HEIGHT  -          3.704 (meters)       12.15  (feet) COMP
 HV0265  MODELED GRAVITY -    980,016.0   (mgal)                       NAVD 88
 HV0265
 HV0265  VERT ORDER      -  SECOND    CLASS 0
 HV0265
 HV0265.The horizontal coordinates were scaled from a map and have
 HV0265.an estimated accuracy of +/- 6 seconds.
 HV0265
 HV0265.The orthometric height was determined by differential leveling and
 HV0265.adjusted by the NATIONAL GEODETIC SURVEY
 HV0265.in June 1991.
 HV0265
 HV0265.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0265.GEOID18 height accuracy estimate available here.
 HV0265
 HV0265.Click photographs - Photos may exist for this station.
 HV0265
 HV0265.The dynamic height is computed by dividing the NAVD 88
 HV0265.geopotential number by the normal gravity value computed on the
 HV0265.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0265.degrees latitude (g = 980.6199 gals.).
 HV0265
 HV0265.The modeled gravity was interpolated from observed gravity values.
 HV0265
 HV0265;                    North         East    Units  Estimated Accuracy
 HV0265;SPC MD       -    98,450.      479,810.      MT  (+/- 180 meters Scaled)
 HV0265
 HV0265_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH055673(NAD 83)
 HV0265
 HV0265                          SUPERSEDED SURVEY CONTROL
 HV0265
 HV0265  NGVD 29 (02/24/95)    3.938  (m)           12.92   (f) ADJUSTED    2 0
 HV0265  NGVD 29 (11/26/84)    3.945  (m)           12.94   (f) SUPERSEDED  2 0
 HV0265
 HV0265.Superseded values are not recommended for survey control.
 HV0265
 HV0265.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0265.See file dsdata.pdf to determine how the superseded data were derived.
 HV0265
 HV0265_MARKER: DB = BENCH MARK DISK
 HV0265_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0265_STAMPING: C 51 1942
 HV0265_MARK LOGO: CGS
 HV0265_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0265+STABILITY: SURFACE MOTION
 HV0265
 HV0265  HISTORY     - Date     Condition        Report By
 HV0265  HISTORY     - 1942     MONUMENTED       CGS
 HV0265  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0265
 HV0265                          STATION DESCRIPTION
 HV0265
 HV0265'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0265'1 MI N FROM CAMBRIDGE.
 HV0265'THIS MARK IS ALONG HIGHWAY NUMBER 16 ABOUT 1 MILE SOUTH OF THE
 HV0265'INTERSECTION OF RACE AND WASHINGTON STREETS IN CAMBRIDGE, DORCHESTER
 HV0265'COUNTY, OPPOSITE THE SOUTHEAST CORNER OF THE FAIR GROUNDS, IN THE
 HV0265'NORTHWEST CORNER OF A CULTIVATED FIELD, 38.2 FEET NORTHEAST OF
 HV0265'POWER POLE NUMBER 18, 30.8 FEET EAST OF THE CENTER LINE OF THE
 HV0265'HIGHWAY AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST
 HV0265'ABOUT 3 FEET WEST OF A STANDARD REFERENCE POST.
 HV0265
 HV0265                          STATION RECOVERY (1971)
 HV0265
 HV0265'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0265'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0066 ***********************************************************************
 HV0066  DESIGNATION -  C 53 RESET
 HV0066  PID         -  HV0066
 HV0066  STATE/COUNTY-  MD/TALBOT
 HV0066  COUNTRY     -  US
 HV0066  USGS QUAD   -  SAINT MICHAELS (2016)
 HV0066
 HV0066                         *CURRENT SURVEY CONTROL
 HV0066  ______________________________________________________________________
 HV0066* NAD 83(1986) POSITION- 38 46 46.     (N) 076 07 35.     (W)   SCALED
 HV0066* NAVD 88 ORTHO HEIGHT -     0.68  (meters)        2.2   (feet) RESET
 HV0066  ______________________________________________________________________
 HV0066  GEOID HEIGHT    -        -34.564 (meters)                     GEOID18
 HV0066  VERT ORDER      -  THIRD
 HV0066
 HV0066.The horizontal coordinates were scaled from a map and have
 HV0066.an estimated accuracy of +/- 6 seconds.
 HV0066
 HV0066.The orthometric height was computed from unverified reset data.
 HV0066
 HV0066.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0066.GEOID18 height accuracy estimate available here.
 HV0066
 HV0066.Click photographs - Photos may exist for this station.
 HV0066
 HV0066;                    North         East    Units  Estimated Accuracy
 HV0066;SPC MD       -   123,890.      475,910.      MT  (+/- 180 meters Scaled)
 HV0066
 HV0066_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH021929(NAD 83)
 HV0066
 HV0066                          SUPERSEDED SURVEY CONTROL
 HV0066
 HV0066  NGVD 29 (??/??/??)    0.92   (m)            3.0    (f) RESET       3  
 HV0066
 HV0066.Superseded values are not recommended for survey control.
 HV0066
 HV0066.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0066.See file dsdata.pdf to determine how the superseded data were derived.
 HV0066
 HV0066_MARKER: DB = BENCH MARK DISK
 HV0066_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0066_STAMPING: C 53 RESET 1954
 HV0066_MARK LOGO: CGS
 HV0066_PROJECTION: PROJECTING 8 CENTIMETERS
 HV0066_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0066+STABILITY: SURFACE MOTION
 HV0066
 HV0066  HISTORY     - Date     Condition        Report By
 HV0066  HISTORY     - 1954     MONUMENTED       MDBCSM
 HV0066  HISTORY     - 19970106 MARK NOT FOUND   USPSQD
 HV0066
 HV0066                          STATION DESCRIPTION
 HV0066
 HV0066'DESCRIBED BY MD BUR SURV AND MAPS 1954
 HV0066'3 MI W FROM EASTON.
 HV0066'3.0 MILES WEST ALONG STATE HIGHWAY 33 FROM THE COURTHOUSE AT
 HV0066'EASTON, TALBOT COUNTY, AT THE JUNCTION OF A FARM LANE LEADING SOUTH
 HV0066'THROUGH A GROVE OF HUGE MAPLE TREES, 23.7 FEET EAST OF THE EDGE OF
 HV0066'THE LANE, 63 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY, 19.7
 HV0066'FEET SOUTHWEST OF A 20-INCH MAPLE TREE, AND 1 FOOT EAST OF A
 HV0066'WIRE FENCE.  A STANDARD DISK, STAMPED C 53 RESET 1954 AND SET
 HV0066'IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE GROUND.
 HV0066'NOTE-- THIS BENCH MARK WAS ESTABLISHED AND ITS ELEVATION DETERMINED
 HV0066'BY ENGINEERS OF THE STATE BUREAU OF CONTROL SURVEYS AND MAPS IN
 HV0066'JULY 1954.
 HV0066
 HV0066                          STATION RECOVERY (1997)
 HV0066
 HV0066'RECOVERY NOTE BY US POWER SQUADRON 1997
 HV0066'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0311 ***********************************************************************
 HU0311  DESIGNATION -  C 55 RESET
 HU0311  PID         -  HU0311
 HU0311  STATE/COUNTY-  MD/WORCESTER
 HU0311  COUNTRY     -  US
 HU0311  USGS QUAD   -  NINEPIN BRANCH (2016)
 HU0311
 HU0311                         *CURRENT SURVEY CONTROL
 HU0311  ______________________________________________________________________
 HU0311* NAD 83(1986) POSITION- 38 16 24.     (N) 075 20 48.     (W)   SCALED
 HU0311* NAVD 88 ORTHO HEIGHT -     8.28  (meters)       27.2   (feet) RESET
 HU0311  ______________________________________________________________________
 HU0311  GEOID HEIGHT    -        -36.077 (meters)                     GEOID18
 HU0311  VERT ORDER      -  THIRD
 HU0311
 HU0311.The horizontal coordinates were scaled from a map and have
 HU0311.an estimated accuracy of +/- 6 seconds.
 HU0311
 HU0311.The orthometric height was computed from unverified reset data.
 HU0311
 HU0311.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0311.GEOID18 height accuracy estimate available here.
 HU0311
 HU0311.Click photographs - Photos may exist for this station.
 HU0311
 HU0311;                    North         East    Units  Estimated Accuracy
 HU0311;SPC MD       -    68,650.      544,670.      MT  (+/- 180 meters Scaled)
 HU0311
 HU0311_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH696361(NAD 83)
 HU0311
 HU0311                          SUPERSEDED SURVEY CONTROL
 HU0311
 HU0311  NGVD 29 (??/??/??)    8.51   (m)           27.9    (f) RESET       3  
 HU0311
 HU0311.Superseded values are not recommended for survey control.
 HU0311
 HU0311.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0311.See file dsdata.pdf to determine how the superseded data were derived.
 HU0311
 HU0311_MARKER: DB = BENCH MARK DISK
 HU0311_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0311_STAMPING: C 55 RESET 1962
 HU0311_MARK LOGO: CGS
 HU0311_PROJECTION: PROJECTING 10 CENTIMETERS
 HU0311_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0311+STABILITY: SURFACE MOTION
 HU0311
 HU0311  HISTORY     - Date     Condition        Report By
 HU0311  HISTORY     - 1962     MONUMENTED       CGS
 HU0311  HISTORY     - 1968     GOOD             CGS
 HU0311
 HU0311                          STATION DESCRIPTION
 HU0311
 HU0311'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0311'2.5 MI SE FROM WHITON.
 HU0311'2.5 MILES SOUTHEAST ALONG A BLACKTOP ROAD FROM A T JUNCTION AT
 HU0311'WHITON, WICOMICO COUNTY, 79 FEET SOUTHWEST ACROSS ROAD FROM R.E.A.
 HU0311'POLE 22-45, 32 FEET WEST OF THE CENTERLINE OF ROAD, 5 FEET SOUTHEAST
 HU0311'OF 15-INCH PINE, 4 FEET SOUTHEAST OF 8-INCH OAK, UNDER TELEPHONE
 HU0311'CABLE AND AT THE WEST EDGE OF CLEARED RIGHT OF WAY, AND SET FLUSH
 HU0311'IN A 10 X 10 INCH CONCRETE MONUMENT, WHICH PROJECTS ABOUT 4 INCHES
 HU0311'ABOVE THE GROUND.
 HU0311
 HU0311                          STATION RECOVERY (1968)
 HU0311
 HU0311'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968
 HU0311'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0582 ***********************************************************************
 HU0582  DESIGNATION -  C 57
 HU0582  PID         -  HU0582
 HU0582  STATE/COUNTY-  MD/SOMERSET
 HU0582  COUNTRY     -  US
 HU0582  USGS QUAD   -  DEAL ISLAND (2016)
 HU0582
 HU0582                         *CURRENT SURVEY CONTROL
 HU0582  ______________________________________________________________________
 HU0582* NAD 83(1986) POSITION- 38 10 12.     (N) 075 56 33.     (W)   SCALED
 HU0582* NAVD 88 ORTHO HEIGHT -     0.643 (meters)        2.11  (feet) ADJUSTED
 HU0582  ______________________________________________________________________
 HU0582  GEOID HEIGHT    -        -35.788 (meters)                     GEOID18
 HU0582  DYNAMIC HEIGHT  -          0.643 (meters)        2.11  (feet) COMP
 HU0582  MODELED GRAVITY -    979,985.0   (mgal)                       NAVD 88
 HU0582
 HU0582  VERT ORDER      -  FIRST     CLASS II
 HU0582
 HU0582.The horizontal coordinates were scaled from a map and have
 HU0582.an estimated accuracy of +/- 6 seconds.
 HU0582
 HU0582.The orthometric height was determined by differential leveling and
 HU0582.adjusted by the NATIONAL GEODETIC SURVEY
 HU0582.in June 1991.
 HU0582
 HU0582.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0582.GEOID18 height accuracy estimate available here.
 HU0582
 HU0582.Click photographs - Photos may exist for this station.
 HU0582
 HU0582.The dynamic height is computed by dividing the NAVD 88
 HU0582.geopotential number by the normal gravity value computed on the
 HU0582.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0582.degrees latitude (g = 980.6199 gals.).
 HU0582
 HU0582.The modeled gravity was interpolated from observed gravity values.
 HU0582
 HU0582;                    North         East    Units  Estimated Accuracy
 HU0582;SPC MD       -    56,410.      492,670.      MT  (+/- 180 meters Scaled)
 HU0582
 HU0582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH174250(NAD 83)
 HU0582
 HU0582                          SUPERSEDED SURVEY CONTROL
 HU0582
 HU0582  NGVD 29 (11/26/84)    0.893  (m)            2.93   (f) ADJUSTED    1 2
 HU0582
 HU0582.Superseded values are not recommended for survey control.
 HU0582
 HU0582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0582.See file dsdata.pdf to determine how the superseded data were derived.
 HU0582
 HU0582_MARKER: DB = BENCH MARK DISK
 HU0582_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0582_STAMPING: C 57 1942
 HU0582_MARK LOGO: CGS
 HU0582_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0582_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0582+STABILITY: SURFACE MOTION
 HU0582
 HU0582  HISTORY     - Date     Condition        Report By
 HU0582  HISTORY     - 1942     MONUMENTED       CGS
 HU0582  HISTORY     - 1963     MARK NOT FOUND   CGS
 HU0582
 HU0582                          STATION DESCRIPTION
 HU0582
 HU0582'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0582'3 MI W FROM DAMES QUARTER.
 HU0582'3.0 MILES WEST ALONG STATE HIGHWAY 363 FROM THE POST OFFICE AT
 HU0582'DAMES QUARTER, SOMERSET COUNTY, AT CHANCE, 64.4 FEET NORTHEAST OF
 HU0582'THE NORTHEAST END OF THE BRIDGE OVER ROCK CREEK, 27.7 FEET EAST OF
 HU0582'THE CENTERLINE OF THE HIGHWAY, 11.7 FEET NORTHEAST OF A POLE, AND
 HU0582'ABOUT 2 FEET LOWER THAN THE HIGHWAY.  A STANDARD DISK, STAMPED C
 HU0582'57 1942 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES
 HU0582'ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0307 ***********************************************************************
 HU0307  DESIGNATION -  C 58
 HU0307  PID         -  HU0307
 HU0307  STATE/COUNTY-  MD/WORCESTER
 HU0307  COUNTRY     -  US
 HU0307  USGS QUAD   -  BOXIRON (2016)
 HU0307
 HU0307                         *CURRENT SURVEY CONTROL
 HU0307  ______________________________________________________________________
 HU0307* NAD 83(1986) POSITION- 38 05 55.     (N) 075 18 56.     (W)   SCALED
 HU0307* NAVD 88 ORTHO HEIGHT -     0.337 (meters)        1.11  (feet) ADJUSTED
 HU0307  ______________________________________________________________________
 HU0307  GEOID HEIGHT    -        -36.346 (meters)                     GEOID18
 HU0307  DYNAMIC HEIGHT  -          0.336 (meters)        1.10  (feet) COMP
 HU0307  MODELED GRAVITY -    979,977.5   (mgal)                       NAVD 88
 HU0307
 HU0307  VERT ORDER      -  SECOND    CLASS 0
 HU0307
 HU0307.The horizontal coordinates were scaled from a map and have
 HU0307.an estimated accuracy of +/- 6 seconds.
 HU0307
 HU0307.The orthometric height was determined by differential leveling and
 HU0307.adjusted by the NATIONAL GEODETIC SURVEY
 HU0307.in June 1991.
 HU0307
 HU0307.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0307.GEOID18 height accuracy estimate available here.
 HU0307
 HU0307.Click photographs - Photos may exist for this station.
 HU0307
 HU0307.The dynamic height is computed by dividing the NAVD 88
 HU0307.geopotential number by the normal gravity value computed on the
 HU0307.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0307.degrees latitude (g = 980.6199 gals.).
 HU0307
 HU0307.The modeled gravity was interpolated from observed gravity values.
 HU0307
 HU0307;                    North         East    Units  Estimated Accuracy
 HU0307;SPC MD       -    49,310.      547,750.      MT  (+/- 180 meters Scaled)
 HU0307
 HU0307_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH723168(NAD 83)
 HU0307
 HU0307                          SUPERSEDED SURVEY CONTROL
 HU0307
 HU0307  NGVD 29 (11/26/84)    0.580  (m)            1.90   (f) ADJUSTED    2 0
 HU0307
 HU0307.Superseded values are not recommended for survey control.
 HU0307
 HU0307.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0307.See file dsdata.pdf to determine how the superseded data were derived.
 HU0307
 HU0307_MARKER: DB = BENCH MARK DISK
 HU0307_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0307_STAMPING: C 58 1942
 HU0307_MARK LOGO: CGS
 HU0307_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0307+STABILITY: SURFACE MOTION
 HU0307
 HU0307  HISTORY     - Date     Condition        Report By
 HU0307  HISTORY     - 1942     MONUMENTED       CGS
 HU0307  HISTORY     - 20040120 MARK NOT FOUND   MDSHA
 HU0307
 HU0307                          STATION DESCRIPTION
 HU0307
 HU0307'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0307'2.7 MI N FROM GIRDLETREE.
 HU0307'2.7 MILES NORTH ALONG STATE HIGHWAY 12 FROM THE POST OFFICE AT
 HU0307'GIRDLETREE, WORCESTER COUNTY, THENCE 5.6 MILES SOUTHEAST ALONG A
 HU0307'DIRT ROAD, AT RATTLESNAKE LANDING, 58.6 FEET SOUTHEAST OF A LITTLE
 HU0307'OUTHOUSE, 43.9 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A BOAT
 HU0307'SHED, 14.3 FEET NORTHWEST OF THE NORTHWEST CORNER OF A BOAT SHED,
 HU0307'AND ABOUT LEVEL WITH THE ROAD.  A STANDARD DISK, STAMPED C 58 1942
 HU0307'AND SET IN THE TOP OF A CONCRETE POST.
 HU0307
 HU0307                          STATION RECOVERY (2004)
 HU0307
 HU0307'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (SFK)
 HU0307'NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0474 ***********************************************************************
 HV0474  DESIGNATION -  C 59
 HV0474  PID         -  HV0474
 HV0474  STATE/COUNTY-  MD/DORCHESTER
 HV0474  COUNTRY     -  US
 HV0474  USGS QUAD   -  HONGA (2016)
 HV0474
 HV0474                         *CURRENT SURVEY CONTROL
 HV0474  ______________________________________________________________________
 HV0474* NAD 83(1986) POSITION- 38 19 05.6    (N) 076 07 47.5    (W)   HD_HELD2
 HV0474* NAVD 88 ORTHO HEIGHT -     0.675 (meters)        2.21  (feet) ADJUSTED
 HV0474  ______________________________________________________________________
 HV0474  GEOID HEIGHT    -        -35.357 (meters)                     GEOID18
 HV0474  DYNAMIC HEIGHT  -          0.675 (meters)        2.21  (feet) COMP
 HV0474  MODELED GRAVITY -    979,993.9   (mgal)                       NAVD 88
 HV0474
 HV0474  VERT ORDER      -  SECOND    CLASS 0
 HV0474
 HV0474.The horizontal coordinates were established by autonomous hand held GPS
 HV0474.observations and have an estimated accuracy of +/- 10 meters.
 HV0474
 HV0474.The orthometric height was determined by differential leveling and
 HV0474.adjusted by the NATIONAL GEODETIC SURVEY
 HV0474.in June 1991.
 HV0474
 HV0474.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0474.GEOID18 height accuracy estimate available here.
 HV0474
 HV0474.Click photographs - Photos may exist for this station.
 HV0474
 HV0474.The dynamic height is computed by dividing the NAVD 88
 HV0474.geopotential number by the normal gravity value computed on the
 HV0474.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0474.degrees latitude (g = 980.6199 gals.).
 HV0474
 HV0474.The modeled gravity was interpolated from observed gravity values.
 HV0474
 HV0474;                    North         East    Units  Estimated Accuracy
 HV0474;SPC MD       -    72,688.      476,094.      MT  (+/- 10 meters HH2 GPS)
 HV0474
 HV0474_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0122941727(NAD 83)
 HV0474
 HV0474                          SUPERSEDED SURVEY CONTROL
 HV0474
 HV0474  NGVD 29 (11/26/84)    0.900  (m)            2.95   (f) ADJUSTED    2 0
 HV0474
 HV0474.Superseded values are not recommended for survey control.
 HV0474
 HV0474.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0474.See file dsdata.pdf to determine how the superseded data were derived.
 HV0474
 HV0474_MARKER: DB = BENCH MARK DISK
 HV0474_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0474_SP_SET: CULVERT
 HV0474_STAMPING: C 59 1942
 HV0474_MARK LOGO: CGS
 HV0474_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0474_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0474+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2014
 HV0474
 HV0474  HISTORY     - Date     Condition        Report By
 HV0474  HISTORY     - 1942     MONUMENTED       CGS
 HV0474  HISTORY     - 20140328 GOOD             ARCSHE
 HV0474
 HV0474                          STATION DESCRIPTION
 HV0474
 HV0474'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0474'2 MI NW FROM WINGATE.
 HV0474'THIS MARK IS ALONG HIGHWAY 336 ABOUT 2.0 MILES NORTHWEST OF THE
 HV0474'COUNTY TRUST COMPANY BUILDING AT WINGATE, DORCHESTER COUNTY,
 HV0474'145 FEET NORTHWEST OF HIGHWAY MARKER NUMBER 79, SET IN THE
 HV0474'NORTHWEST END OF THE NORTHEAST HEADWALL OF A CONCRETE CULVERT,
 HV0474'ABOUT 100 FEET SOUTH OF A SMALL STORE BUILDING, AND IS A STANDARD
 HV0474'DISK SET IN A DRILL HOLE ABOUT LEVEL WITH THE PAVEMENT.
 HV0474
 HV0474                          STATION RECOVERY (2014)
 HV0474
 HV0474'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0474'THE MARK IS 43.5 FT (13.3 M) NORTHEAST OF POWER POLE 196/512/144,
 HV0474'129.5 FT (39.5 M) SOUTHEAST OF C AND P POLE 195 AND 5.2 FT (1.6 M)
 HV0474'SOUTHWEST OF THE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0297 ***********************************************************************
 HU0297  DESIGNATION -  C 61 RESET
 HU0297  PID         -  HU0297
 HU0297  STATE/COUNTY-  MD/WORCESTER
 HU0297  COUNTRY     -  US
 HU0297  USGS QUAD   -  SNOW HILL (2016)
 HU0297
 HU0297                         *CURRENT SURVEY CONTROL
 HU0297  ______________________________________________________________________
 HU0297* NAD 83(1986) POSITION- 38 11 58.6    (N) 075 26 11.2    (W)   HD_HELD2
 HU0297* NAVD 88 ORTHO HEIGHT -     9.40  (meters)       30.8   (feet) RESET
 HU0297  ______________________________________________________________________
 HU0297  GEOID HEIGHT    -        -36.166 (meters)                     GEOID18
 HU0297  VERT ORDER      -  THIRD
 HU0297
 HU0297.The horizontal coordinates were established by autonomous hand held GPS
 HU0297.observations and have an estimated accuracy of +/- 10 meters.
 HU0297
 HU0297.The orthometric height was computed from unverified reset data.
 HU0297
 HU0297.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0297.GEOID18 height accuracy estimate available here.
 HU0297
 HU0297.Click photographs - Photos may exist for this station.
 HU0297
 HU0297;                    North         East    Units  Estimated Accuracy
 HU0297;SPC MD       -    60,332.      536,954.      MT  (+/- 10 meters HH2 GPS)
 HU0297
 HU0297_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6178528052(NAD 83)
 HU0297
 HU0297                          SUPERSEDED SURVEY CONTROL
 HU0297
 HU0297  NGVD 29 (??/??/??)    9.64   (m)           31.6    (f) RESET       3  
 HU0297
 HU0297.Superseded values are not recommended for survey control.
 HU0297
 HU0297.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0297.See file dsdata.pdf to determine how the superseded data were derived.
 HU0297
 HU0297_MARKER: DB = BENCH MARK DISK
 HU0297_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0297_STAMPING: C 61 RESET 1955
 HU0297_MARK LOGO: CGS
 HU0297_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0297+STABILITY: SURFACE MOTION
 HU0297
 HU0297  HISTORY     - Date     Condition        Report By
 HU0297  HISTORY     - 1955     MONUMENTED       MDGS
 HU0297  HISTORY     - 1962     GOOD             CGS
 HU0297  HISTORY     - 20061008 POOR             USPSQD
 HU0297
 HU0297                          STATION DESCRIPTION
 HU0297
 HU0297'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0297'2.8 MI NW FROM SNOW HILL.
 HU0297'2.8 MILES NORTHWEST ALONG STATE HIGHWAY 12 FROM THE DRAWBRIDGE
 HU0297'OVER POCOMOKE RIVER AT SNOW HILL, WORCESTER COUNTY, 150 FEET
 HU0297'SOUTHWEST OF THE HIGHWAY, AND 14 FEET NORTHWEST OF A DIRT ROAD
 HU0297'LEADING SOUTHWEST.  A STANDARD DISK, STAMPED C 61 RESET 1955
 HU0297'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE
 HU0297'GROUND.  NOTE-- LOCATED AT THE INTERSECTION OF STATE HIGHWAY 12
 HU0297'AND A BLACKTOP ROAD LEADING SOUTHWEST.  MARK IS 150 FEET
 HU0297'SOUTHWEST OF THE CENTERLINE OF STATE HIGHWAY 12 AND 14 FEET
 HU0297'NORTHWEST OF THE CENTERLINE OF BLACKTOP ROAD.  THE MARK PROJECTS
 HU0297'ABOUT 10 INCHES.
 HU0297
 HU0297                          STATION RECOVERY (2006)
 HU0297
 HU0297'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU0297'AT GPS POINTS 38 11 58.6N AND 075 26 11W THERE WAS A CONCRETE POST
 HU0297'WITH A DRILL HOLE, NO MARKER. THIS IS 25 FEET E OF POLE WITH NO NUMBER
 HU0297'AND  45 FEET S OF POLE 839/1 CHOPTANK.CORNER OF RED HOUSE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0019 ***********************************************************************
 HV0019  DESIGNATION -  C 62
 HV0019  PID         -  HV0019
 HV0019  STATE/COUNTY-  MD/TALBOT
 HV0019  COUNTRY     -  US
 HV0019  USGS QUAD   -  TRAPPE (2016)
 HV0019
 HV0019                         *CURRENT SURVEY CONTROL
 HV0019  ______________________________________________________________________
 HV0019* NAD 83(1986) POSITION- 38 42 44.9    (N) 076 03 51.1    (W)   HD_HELD2
 HV0019* NAVD 88 ORTHO HEIGHT -    12.641 (meters)       41.47  (feet) ADJUSTED
 HV0019  ______________________________________________________________________
 HV0019  GEOID HEIGHT    -        -34.796 (meters)                     GEOID18
 HV0019  DYNAMIC HEIGHT  -         12.634 (meters)       41.45  (feet) COMP
 HV0019  MODELED GRAVITY -    980,029.9   (mgal)                       NAVD 88
 HV0019
 HV0019  VERT ORDER      -  FIRST     CLASS II
 HV0019
 HV0019.The horizontal coordinates were established by autonomous hand held GPS
 HV0019.observations and have an estimated accuracy of +/- 10 meters.
 HV0019
 HV0019.The orthometric height was determined by differential leveling and
 HV0019.adjusted by the NATIONAL GEODETIC SURVEY
 HV0019.in June 1991.
 HV0019
 HV0019.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0019.GEOID18 height accuracy estimate available here.
 HV0019
 HV0019.Click photographs - Photos may exist for this station.
 HV0019
 HV0019.The dynamic height is computed by dividing the NAVD 88
 HV0019.geopotential number by the normal gravity value computed on the
 HV0019.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0019.degrees latitude (g = 980.6199 gals.).
 HV0019
 HV0019.The modeled gravity was interpolated from observed gravity values.
 HV0019
 HV0019;                    North         East    Units  Estimated Accuracy
 HV0019;SPC MD       -   116,506.      481,387.      MT  (+/- 10 meters HH2 GPS)
 HV0019
 HV0019_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0747685407(NAD 83)
 HV0019
 HV0019                          SUPERSEDED SURVEY CONTROL
 HV0019
 HV0019  NGVD 29 (11/26/84)   12.880  (m)           42.26   (f) ADJUSTED    1 2
 HV0019
 HV0019.Superseded values are not recommended for survey control.
 HV0019
 HV0019.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0019.See file dsdata.pdf to determine how the superseded data were derived.
 HV0019
 HV0019_MARKER: DB = BENCH MARK DISK
 HV0019_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0019_STAMPING: C 62 1942
 HV0019_MARK LOGO: CGS
 HV0019_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0019+STABILITY: SURFACE MOTION
 HV0019_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0019+SATELLITE: SATELLITE OBSERVATIONS - January 05, 2006
 HV0019
 HV0019  HISTORY     - Date     Condition        Report By
 HV0019  HISTORY     - 1942     MONUMENTED       CGS
 HV0019  HISTORY     - 1971     GOOD             NGS
 HV0019  HISTORY     - 20060105 GOOD             MDSHA
 HV0019
 HV0019                          STATION DESCRIPTION
 HV0019
 HV0019'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0019'4 MI N FROM TRAPPE.
 HV0019'ABOUT 0.15 MILE SOUTHEAST ALONG GREENFIELD AVENUE FROM THE POST
 HV0019'OFFICE AT TRAPPE, THENCE 3.8 MILES NORTH ALONG U.S. HIGHWAY 50,
 HV0019'ABOUT 4.25 MILES SOUTH ALONG U.S. HIGHWAY 50 FROM THE INTERSECTION
 HV0019'OF STATE HIGHWAY 331 AT EASTON, AT THE JUNCTION OF A FARM ROAD
 HV0019'LEADING TO A HOUSE, 42 1/2 FEET EAST OF THE CENTER LINE OF THE
 HV0019'EAST LANES OF THE HIGHWAY, 40.8 FEET NORTH OF THE CENTER LINE OF THE
 HV0019'FARM ROAD, 30.4 FEET SOUTHEAST OF THE SOUTH END OF THE EAST
 HV0019'CONCRETE HEADWALL FOR AN 18-INCH PIPE CULVERT UNDER THE HIGHWAY,
 HV0019'10 FEET SOUTHWEST OF A 24 INCH BLAZED POPLAR TREE, 1 FOOT ABOVE
 HV0019'THE LEVEL OF THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST
 HV0019'FLUSH WITH THE GROUND.
 HV0019
 HV0019                          STATION RECOVERY (2006)
 HV0019
 HV0019'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2006 (MRA)
 HV0019'THE STATION IS LOCATED ABOUT 4.3 MI (6.92 KM) SOUTH OF EASTON, 3.7 MI
 HV0019'(5.95 KM) NORTH OF TRAPPE AND 2.7 MI (4.35 KM) EAST-NORTHEAST OF
 HV0019'TRAPPE STATION.
 HV0019'
 HV0019'TO REACH FROM THE POST OFFICE IN TRAPPE, GO SOUTHEAST ON GREENFIELD
 HV0019'AVENUE FOR 0.15 MI (0.24 KM) TO THE INTERSECTION OF US HIGHWAY 50.
 HV0019'TURN LEFT AND GO NORTH ON US HIGHWAY 50 FOR 3.8 MI (6.12 KM) TO THE
 HV0019'STATION ON THE RIGHT.
 HV0019'
 HV0019'IT IS 43.5 FT (13.3 M) EAST OF THE WESTBOUND LANES OF THE HIGHWAY,
 HV0019'38.0 FT (11.6 M) NORTH OF THE CENTER OF A GRAVEL DRIVEWAY, 53.5 FT
 HV0019'(16.3 M) SOUTHWEST OF THE SOUTHWEST CORNER OF A 3.0 FT (0.9 M) SQUARE
 HV0019'ELECTRICAL TRANSFORMER BOX AND SET IN THE TOP OF A CONCRETE POST FLUSH
 HV0019'WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0251 ***********************************************************************
 HV0251  DESIGNATION -  C 63
 HV0251  PID         -  HV0251
 HV0251  STATE/COUNTY-  MD/DORCHESTER
 HV0251  COUNTRY     -  US
 HV0251  USGS QUAD   -  CHURCH CREEK (2016)
 HV0251
 HV0251                         *CURRENT SURVEY CONTROL
 HV0251  ______________________________________________________________________
 HV0251* NAD 83(1986) POSITION- 38 35 22.     (N) 076 10 54.     (W)   SCALED
 HV0251* NAVD 88 ORTHO HEIGHT -     1.167 (meters)        3.83  (feet) ADJUSTED
 HV0251  ______________________________________________________________________
 HV0251  GEOID HEIGHT    -        -34.789 (meters)                     GEOID18
 HV0251  DYNAMIC HEIGHT  -          1.166 (meters)        3.83  (feet) COMP
 HV0251  MODELED GRAVITY -    980,022.2   (mgal)                       NAVD 88
 HV0251
 HV0251  VERT ORDER      -  SECOND    CLASS 0
 HV0251
 HV0251.The horizontal coordinates were scaled from a map and have
 HV0251.an estimated accuracy of +/- 6 seconds.
 HV0251
 HV0251.The orthometric height was determined by differential leveling and
 HV0251.adjusted by the NATIONAL GEODETIC SURVEY
 HV0251.in June 1991.
 HV0251
 HV0251.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0251.GEOID18 height accuracy estimate available here.
 HV0251
 HV0251.Click photographs - Photos may exist for this station.
 HV0251
 HV0251.The dynamic height is computed by dividing the NAVD 88
 HV0251.geopotential number by the normal gravity value computed on the
 HV0251.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0251.degrees latitude (g = 980.6199 gals.).
 HV0251
 HV0251.The modeled gravity was interpolated from observed gravity values.
 HV0251
 HV0251;                    North         East    Units  Estimated Accuracy
 HV0251;SPC MD       -   102,750.      471,290.      MT  (+/- 180 meters Scaled)
 HV0251
 HV0251_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH970718(NAD 83)
 HV0251
 HV0251                          SUPERSEDED SURVEY CONTROL
 HV0251
 HV0251  NGVD 29 (02/24/95)    1.399  (m)            4.59   (f) ADJUSTED    2 0
 HV0251  NGVD 29 (11/26/84)    1.404  (m)            4.61   (f) SUPERSEDED  2 0
 HV0251
 HV0251.Superseded values are not recommended for survey control.
 HV0251
 HV0251.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0251.See file dsdata.pdf to determine how the superseded data were derived.
 HV0251
 HV0251_MARKER: DB = BENCH MARK DISK
 HV0251_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0251_STAMPING: C 63 1942
 HV0251_MARK LOGO: CGS
 HV0251_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0251+STABILITY: SURFACE MOTION
 HV0251
 HV0251  HISTORY     - Date     Condition        Report By
 HV0251  HISTORY     - 1942     MONUMENTED       CGS
 HV0251
 HV0251                          STATION DESCRIPTION
 HV0251
 HV0251'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0251'6.1 MI NW FROM CAMBRIDGE.
 HV0251'ALONG STATE HIGHWAY 343, ABOUT 100 FEET WEST OF J. WOODWARDS
 HV0251'GENERAL STORE, 38 FEET SOUTH OF THE CENTER OF THE HIGHWAY, 40
 HV0251'FEET SOUTHWEST OF A CEDAR TREE, 28 FEET NORTHWEST OF A MAPLE
 HV0251'TREE, 3 FEET WEST OF A FENCE LINE, AND SET IN THE TOP OF A CONCRETE
 HV0251'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0252 ***********************************************************************
 HV0252  DESIGNATION -  C 63 RESET
 HV0252  PID         -  HV0252
 HV0252  STATE/COUNTY-  MD/DORCHESTER
 HV0252  COUNTRY     -  US
 HV0252  USGS QUAD   -  CHURCH CREEK (2016)
 HV0252
 HV0252                         *CURRENT SURVEY CONTROL
 HV0252  ______________________________________________________________________
 HV0252* NAD 83(1986) POSITION- 38 35 22.     (N) 076 10 54.     (W)   SCALED
 HV0252* NAVD 88 ORTHO HEIGHT -     1.24  (+/-2cm)        4.1   (feet) VERTCON3
 HV0252  ______________________________________________________________________
 HV0252  GEOID HEIGHT    -        -34.789 (meters)                     GEOID18
 HV0252  VERT ORDER      -  THIRD (See Below)
 HV0252
 HV0252.The horizontal coordinates were scaled from a map and have
 HV0252.an estimated accuracy of +/- 6 seconds.
 HV0252
 HV0252.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0252.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0252
 HV0252.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0252.GEOID18 height accuracy estimate available here.
 HV0252
 HV0252.The vertical order pertains to the NGVD 29 superseded value.
 HV0252
 HV0252.Click photographs - Photos may exist for this station.
 HV0252
 HV0252;                    North         East    Units  Estimated Accuracy
 HV0252;SPC MD       -   102,750.      471,290.      MT  (+/- 180 meters Scaled)
 HV0252
 HV0252_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH970718(NAD 83)
 HV0252
 HV0252                          SUPERSEDED SURVEY CONTROL
 HV0252
 HV0252  NGVD 29 (??/??/??)    1.47   (m)            4.8    (f) RESET       3  
 HV0252
 HV0252.Superseded values are not recommended for survey control.
 HV0252
 HV0252.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0252.See file dsdata.pdf to determine how the superseded data were derived.
 HV0252
 HV0252_MARKER: DB = BENCH MARK DISK
 HV0252_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0252_STAMPING: C 63 RESET 1958
 HV0252_MARK LOGO: CGS
 HV0252_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0252+STABILITY: SURFACE MOTION
 HV0252
 HV0252  HISTORY     - Date     Condition        Report By
 HV0252  HISTORY     - 1958     MONUMENTED       MDBCSM
 HV0252  HISTORY     - 1978     MARK NOT FOUND   USGS
 HV0252
 HV0252                          STATION DESCRIPTION
 HV0252
 HV0252'DESCRIBED BY MD BUR SURV AND MAPS 1958
 HV0252'6.1 MI NW FROM CAMBRIDGE.
 HV0252'6.1 MILES NORTHWEST ALONG MARYLAND ROUTE 343 FROM THE PILGRIM
 HV0252'HOLINESS CHURCH AT CAMBRIDGE, 56.9 FEET NORTH OF THE CENTER OF
 HV0252'EXISTING ROUTE 343, 81.4 FEET EAST OF THE CENTER OF A DRIVEWAY,
 HV0252'150.1 FEET NORTHWEST OF A GENERAL STORE, 2.1 FEET NORTH OF NEW
 HV0252'POWER POLE NO. 146, AND SET IN THE TOP OF A CONCRETE POST
 HV0252'PROJECTING 6 INCHES.
 HV0252
 HV0252                          STATION RECOVERY (1978)
 HV0252
 HV0252'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1978
 HV0252'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU2498 ***********************************************************************
 JU2498  DESIGNATION -  C 64 RESET
 JU2498  PID         -  JU2498
 JU2498  STATE/COUNTY-  MD/CECIL
 JU2498  COUNTRY     -  US
 JU2498  USGS QUAD   -  NORTH EAST (2016)
 JU2498
 JU2498                         *CURRENT SURVEY CONTROL
 JU2498  ______________________________________________________________________
 JU2498* NAD 83(1986) POSITION- 39 33 01.     (N) 075 54 28.     (W)   SCALED
 JU2498* NAVD 88 ORTHO HEIGHT -    79.14  (+/-2cm)      259.6   (feet) VERTCON3
 JU2498  ______________________________________________________________________
 JU2498  GEOID HEIGHT    -        -33.240 (meters)                     GEOID18
 JU2498  VERT ORDER      -  THIRD (See Below)
 JU2498
 JU2498.The horizontal coordinates were scaled from a map and have
 JU2498.an estimated accuracy of +/- 6 seconds.
 JU2498
 JU2498.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU2498.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU2498
 JU2498.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU2498.GEOID18 height accuracy estimate available here.
 JU2498
 JU2498.The vertical order pertains to the NGVD 29 superseded value.
 JU2498
 JU2498.Click photographs - Photos may exist for this station.
 JU2498
 JU2498;                    North         East    Units  Estimated Accuracy
 JU2498;SPC MD       -   209,660.      493,880.      MT  (+/- 180 meters Scaled)
 JU2498
 JU2498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ220782(NAD 83)
 JU2498
 JU2498                          SUPERSEDED SURVEY CONTROL
 JU2498
 JU2498  NGVD 29 (??/??/??)   79.36   (m)          260.4    (f) RESET       3  
 JU2498
 JU2498.Superseded values are not recommended for survey control.
 JU2498
 JU2498.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU2498.See file dsdata.pdf to determine how the superseded data were derived.
 JU2498
 JU2498_MARKER: DV = VERTICAL CONTROL DISK
 JU2498_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU2498_STAMPING: C 64 RESET 1980
 JU2498_MARK LOGO: NGS
 JU2498_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU2498+STABILITY: SURFACE MOTION
 JU2498
 JU2498  HISTORY     - Date     Condition        Report By
 JU2498  HISTORY     - 1980     MONUMENTED       NGS
 JU2498  HISTORY     - 19930130 MARK NOT FOUND   USPSQD
 JU2498  HISTORY     - 20250918 GOOD             PROFLN
 JU2498
 JU2498                          STATION DESCRIPTION
 JU2498
 JU2498'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 JU2498'4 MI SW FROM ELKTON.
 JU2498'TO REACH FROM THE INTERSECTION OF U.S. HWY 40 AND STATE HWYS 7 AND
 JU2498'279 IN THE SW PART OF ELKTON, GO WEST ON U.S. HWY 40 FOR 0.4 MI
 JU2498'TO A SIDE ROAD, TURN LEFT AND GO SOUTH ON OLD ELKTON ROAD FOR ABOUT
 JU2498'0.1 MI TO A CROSSROADS, CONTINUE STRAIGHT AND GO SW ON OLD ELKTON ROAD
 JU2498'FOR 0.85 MI TO A SIDE ROAD LEFT AT MARANATHA CHURCH.  KEEP STRAIGHT
 JU2498'ON OLD ELKTON ROAD FOR 0.35 MI TO A FORK.  KEEP LEFT AND CONTINUE SW
 JU2498'ON OLD ELKTON ROAD FOR 0.5 MI TO THE MARK ON THE RIGHT.
 JU2498'IT IS 27 FEET NE OF THE CENTER OF A DIRT ROAD, 26 FEET NW OF THE
 JU2498'CENTER OF OLD ELKTON ROAD, 26 FEET NORTH OF A POWERLINE POLE
 JU2498'NUMBERED 15038 AND 14.7 FEET SW OF A UNDERGROUND TELEPHONE
 JU2498'CABLE MARKER NUMBERED 52.  A DISK SET INTO THE TOP OF A CONCRETE
 JU2498'POST PROJECTING 3 INCHES, 3 FEET ABOVE OLD ELKTON ROAD, AND 1.1
 JU2498'FEET EAST OF A WITNESS POST.
 JU2498
 JU2498                          STATION RECOVERY (1993)
 JU2498
 JU2498'RECOVERY NOTE BY US POWER SQUADRON 1993 (DMM)
 JU2498'MARK NOT FOUND.
 JU2498
 JU2498                          STATION RECOVERY (2025)
 JU2498
 JU2498'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU2498'THE MARK IS INSIDE A 12 INCH (30 CM) PVC PIPE.  IT IS 4 FT (1.2 M)
 JU2498'NORTHERLY OF THE NORTHERLY LINE EXTENDED OF HOUSE 1483 - ONE STORY
 JU2498'BRICK AND VINYL SIDING - AND 3 FT (0.9 M) NORTHWEST OF POLE
 JU2498'38450-36357.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0908 ***********************************************************************
 HU0908  DESIGNATION -  C 66
 HU0908  PID         -  HU0908
 HU0908  STATE/COUNTY-  MD/CAROLINE
 HU0908  COUNTRY     -  US
 HU0908  USGS QUAD   -  FEDERALSBURG (2016)
 HU0908
 HU0908                         *CURRENT SURVEY CONTROL
 HU0908  ______________________________________________________________________
 HU0908* NAD 83(1986) POSITION- 38 41 24.3    (N) 075 46 23.9    (W)   HD_HELD2
 HU0908* NAVD 88 ORTHO HEIGHT -     3.528 (meters)       11.57  (feet) ADJUSTED
 HU0908  ______________________________________________________________________
 HU0908  GEOID HEIGHT    -        -35.332 (meters)                     GEOID18
 HU0908  DYNAMIC HEIGHT  -          3.526 (meters)       11.57  (feet) COMP
 HU0908  MODELED GRAVITY -    980,021.7   (mgal)                       NAVD 88
 HU0908
 HU0908  VERT ORDER      -  SECOND    CLASS I
 HU0908
 HU0908.The horizontal coordinates were established by autonomous hand held GPS
 HU0908.observations and have an estimated accuracy of +/- 10 meters.
 HU0908
 HU0908.The orthometric height was determined by differential leveling and
 HU0908.adjusted by the NATIONAL GEODETIC SURVEY
 HU0908.in June 1991.
 HU0908
 HU0908.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0908.GEOID18 height accuracy estimate available here.
 HU0908
 HU0908.Click photographs - Photos may exist for this station.
 HU0908
 HU0908.The dynamic height is computed by dividing the NAVD 88
 HU0908.geopotential number by the normal gravity value computed on the
 HU0908.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0908.degrees latitude (g = 980.6199 gals.).
 HU0908
 HU0908.The modeled gravity was interpolated from observed gravity values.
 HU0908
 HU0908;                    North         East    Units  Estimated Accuracy
 HU0908;SPC MD       -   114,320.      506,718.      MT  (+/- 10 meters HH2 GPS)
 HU0908
 HU0908_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3274682669(NAD 83)
 HU0908
 HU0908                          SUPERSEDED SURVEY CONTROL
 HU0908
 HU0908  NGVD 29 (11/26/84)    3.771  (m)           12.37   (f) ADJUSTED    2 0
 HU0908
 HU0908.Superseded values are not recommended for survey control.
 HU0908
 HU0908.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0908.See file dsdata.pdf to determine how the superseded data were derived.
 HU0908
 HU0908_MARKER: DB = BENCH MARK DISK
 HU0908_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0908_STAMPING: C 66 1942
 HU0908_MARK LOGO: CGS
 HU0908_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0908_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0908+STABILITY: SURFACE MOTION
 HU0908_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0908+SATELLITE: SATELLITE OBSERVATIONS - February 26, 2007
 HU0908
 HU0908  HISTORY     - Date     Condition        Report By
 HU0908  HISTORY     - 1942     MONUMENTED       CGS
 HU0908  HISTORY     - 1965     GOOD             CGS
 HU0908  HISTORY     - 20020606 GOOD             MDSHA
 HU0908  HISTORY     - 20070226 GOOD             USPSQD
 HU0908
 HU0908                          STATION DESCRIPTION
 HU0908
 HU0908'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0908'AT FEDERALSBURG.
 HU0908'AT FEDERALSBURG, CAROLINE COUNTY, AT THE RAILROAD STATION, 15.6
 HU0908'FEET NORTH OF THE CENTER LINE OF THE MACADAM ROAD, 45.4 FEET
 HU0908'NORTHWEST OF THE NORTHWEST CORNER OF THE STATION, 4.9 FEET EAST
 HU0908'OF A POWER POLE, ABOUT 2.0 FEET LOWER THAN THE ROAD, NEAR A
 HU0908'STANDARD REFERENCE POST.  NOTE-- MARK IS NOW 16 FEET EAST OF A
 HU0908'POWER POLE AND NOT 4.9 AS DESCRIBED.
 HU0908
 HU0908                          STATION RECOVERY (1965)
 HU0908
 HU0908'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0908'RECOVERED IN GOOD CONDITION.
 HU0908
 HU0908                          STATION RECOVERY (2002)
 HU0908
 HU0908'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0908'RECOVERED AS DESCRIBED.
 HU0908
 HU0908                          STATION RECOVERY (2007)
 HU0908
 HU0908'RECOVERY NOTE BY US POWER SQUADRON 2007
 HU0908'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0920 ***********************************************************************
 HU0920  DESIGNATION -  C 67
 HU0920  PID         -  HU0920
 HU0920  STATE/COUNTY-  MD/CAROLINE
 HU0920  COUNTRY     -  US
 HU0920  USGS QUAD   -  HOBBS (2017)
 HU0920
 HU0920                         *CURRENT SURVEY CONTROL
 HU0920  ______________________________________________________________________
 HU0920* NAD 83(1986) POSITION- 38 48 33.9    (N) 075 50 49.8    (W)   HD_HELD2
 HU0920* NAVD 88 ORTHO HEIGHT -    14.248 (meters)       46.75  (feet) ADJUSTED
 HU0920  ______________________________________________________________________
 HU0920  GEOID HEIGHT    -        -34.991 (meters)                     GEOID18
 HU0920  DYNAMIC HEIGHT  -         14.239 (meters)       46.72  (feet) COMP
 HU0920  MODELED GRAVITY -    980,033.5   (mgal)                       NAVD 88
 HU0920
 HU0920  VERT ORDER      -  SECOND    CLASS I
 HU0920
 HU0920.The horizontal coordinates were established by autonomous hand held GPS
 HU0920.observations and have an estimated accuracy of +/- 10 meters.
 HU0920
 HU0920.The orthometric height was determined by differential leveling and
 HU0920.adjusted by the NATIONAL GEODETIC SURVEY
 HU0920.in December 2004.
 HU0920
 HU0920.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0920.GEOID18 height accuracy estimate available here.
 HU0920
 HU0920.Click photographs - Photos may exist for this station.
 HU0920
 HU0920.The dynamic height is computed by dividing the NAVD 88
 HU0920.geopotential number by the normal gravity value computed on the
 HU0920.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0920.degrees latitude (g = 980.6199 gals.).
 HU0920
 HU0920.The modeled gravity was interpolated from observed gravity values.
 HU0920
 HU0920;                    North         East    Units  Estimated Accuracy
 HU0920;SPC MD       -   127,482.      500,126.      MT  (+/- 10 meters HH2 GPS)
 HU0920
 HU0920_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2644595968(NAD 83)
 HU0920
 HU0920                          SUPERSEDED SURVEY CONTROL
 HU0920
 HU0920  NAVD 88 (06/15/91)   14.345  (m)           47.06   (f) SUPERSEDED  2 0
 HU0920  NGVD 29 (11/26/84)   14.585  (m)           47.85   (f) ADJUSTED    2 0
 HU0920
 HU0920.Superseded values are not recommended for survey control.
 HU0920
 HU0920.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0920.See file dsdata.pdf to determine how the superseded data were derived.
 HU0920
 HU0920_MARKER: DB = BENCH MARK DISK
 HU0920_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0920_STAMPING: C 67 1942
 HU0920_MARK LOGO: CGS
 HU0920_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0920_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0920+STABILITY: SURFACE MOTION
 HU0920_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0920+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2002
 HU0920
 HU0920  HISTORY     - Date     Condition        Report By
 HU0920  HISTORY     - 1942     MONUMENTED       CGS
 HU0920  HISTORY     - 1973     GOOD             NGS
 HU0920  HISTORY     - 20020605 GOOD             MDSHA
 HU0920
 HU0920                          STATION DESCRIPTION
 HU0920
 HU0920'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0920'3.8 MI N FROM AMERICAN CORNERS.
 HU0920'3.75 MILES NORTH ALONG HIGHWAY 313 FROM THE JUNCTION OF HIGHWAYS
 HU0920'313 AND 621, AT AMERICAN CORNERS, 27.0 FEET SOUTHWEST OF THE
 HU0920'CENTER OF THE HIGHWAY, 7.5 FEET NORTHEAST OF A CLUMP OF POPLAR
 HU0920'TREES, 2.0 FEET NORTHWEST OF A REFERENCE POST.
 HU0920
 HU0920                          STATION RECOVERY (1973)
 HU0920
 HU0920'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973
 HU0920'RECOVERED IN GOOD CONDITION.
 HU0920
 HU0920                          STATION RECOVERY (2002)
 HU0920
 HU0920'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0920'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0884 ***********************************************************************
 HU0884  DESIGNATION -  C 68
 HU0884  PID         -  HU0884
 HU0884  STATE/COUNTY-  MD/TALBOT
 HU0884  COUNTRY     -  US
 HU0884  USGS QUAD   -  FOWLING CREEK (2017)
 HU0884
 HU0884                         *CURRENT SURVEY CONTROL
 HU0884  ______________________________________________________________________
 HU0884* NAD 83(1986) POSITION- 38 48 40.     (N) 075 54 52.     (W)   SCALED
 HU0884* NAVD 88 ORTHO HEIGHT -     7.790 (meters)       25.56  (feet) ADJUSTED
 HU0884  ______________________________________________________________________
 HU0884  GEOID HEIGHT    -        -34.870 (meters)                     GEOID18
 HU0884  DYNAMIC HEIGHT  -          7.786 (meters)       25.54  (feet) COMP
 HU0884  MODELED GRAVITY -    980,035.9   (mgal)                       NAVD 88
 HU0884
 HU0884  VERT ORDER      -  SECOND    CLASS 0
 HU0884
 HU0884.The horizontal coordinates were scaled from a map and have
 HU0884.an estimated accuracy of +/- 6 seconds.
 HU0884
 HU0884.The orthometric height was determined by differential leveling and
 HU0884.adjusted by the NATIONAL GEODETIC SURVEY
 HU0884.in June 1991.
 HU0884
 HU0884.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0884.GEOID18 height accuracy estimate available here.
 HU0884
 HU0884.Click photographs - Photos may exist for this station.
 HU0884
 HU0884.The dynamic height is computed by dividing the NAVD 88
 HU0884.geopotential number by the normal gravity value computed on the
 HU0884.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0884.degrees latitude (g = 980.6199 gals.).
 HU0884
 HU0884.The modeled gravity was interpolated from observed gravity values.
 HU0884
 HU0884;                    North         East    Units  Estimated Accuracy
 HU0884;SPC MD       -   127,600.      494,280.      MT  (+/- 180 meters Scaled)
 HU0884
 HU0884_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH206962(NAD 83)
 HU0884
 HU0884                          SUPERSEDED SURVEY CONTROL
 HU0884
 HU0884  NGVD 29 (11/26/84)    8.030  (m)           26.35   (f) ADJUSTED    2 0
 HU0884
 HU0884.Superseded values are not recommended for survey control.
 HU0884
 HU0884.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0884.See file dsdata.pdf to determine how the superseded data were derived.
 HU0884
 HU0884_MARKER: DB = BENCH MARK DISK
 HU0884_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0884_STAMPING: C 68 1942
 HU0884_MARK LOGO: CGS
 HU0884_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0884+STABILITY: SURFACE MOTION
 HU0884
 HU0884  HISTORY     - Date     Condition        Report By
 HU0884  HISTORY     - 1942     MONUMENTED       CGS
 HU0884  HISTORY     - 1965     MARK NOT FOUND   CGS
 HU0884
 HU0884                          STATION DESCRIPTION
 HU0884
 HU0884'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0884'2.3 MI SE FROM MATTHEWS.
 HU0884'1.15 MILES SOUTHEAST ALONG A DIRT ROAD FROM THE MATTHEWS SCHOOL
 HU0884'AT MATTHEWS, TALBOT COUNTY, AND ABOUT 1.15 SOUTHEAST ALONG A
 HU0884'SECOND DIRT ROAD, ON THE NORTHWEST SIDE OF THE CHOPTANK RIVER,
 HU0884'ON THE PROPERTY OF HOWARD L. ANDREWS, 44.2 FEET SOUTHEAST OF THE
 HU0884'EAST CORNER OF A RED BARN, 1.0 FOOT NORTHWEST OF A WIRE FENCE,
 HU0884'23.7 FEET SOUTHWEST OF A PEAR TREE.
 HU0884
 HU0884                          STATION RECOVERY (1965)
 HU0884
 HU0884'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0884'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2667 ***********************************************************************
 HU2667  DESIGNATION -  C 7 RESET
 HU2667  PID         -  HU2667
 HU2667  STATE/COUNTY-  MD/DORCHESTER
 HU2667  COUNTRY     -  US
 HU2667  USGS QUAD   -  FEDERALSBURG (2016)
 HU2667
 HU2667                         *CURRENT SURVEY CONTROL
 HU2667  ______________________________________________________________________
 HU2667* NAD 83(1986) POSITION- 38 38 08.     (N) 075 51 40.     (W)   SCALED
 HU2667* NAVD 88 ORTHO HEIGHT -    14.046 (meters)       46.08  (feet) ADJUSTED
 HU2667  ______________________________________________________________________
 HU2667  GEOID HEIGHT    -        -35.266 (meters)                     GEOID18
 HU2667  DYNAMIC HEIGHT  -         14.037 (meters)       46.05  (feet) COMP
 HU2667  MODELED GRAVITY -    980,020.3   (mgal)                       NAVD 88
 HU2667
 HU2667  VERT ORDER      -  SECOND    CLASS I
 HU2667
 HU2667.The horizontal coordinates were scaled from a map and have
 HU2667.an estimated accuracy of +/- 6 seconds.
 HU2667
 HU2667.The orthometric height was determined by differential leveling and
 HU2667.adjusted by the NATIONAL GEODETIC SURVEY
 HU2667.in August 1994.
 HU2667
 HU2667.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2667.GEOID18 height accuracy estimate available here.
 HU2667
 HU2667.Click photographs - Photos may exist for this station.
 HU2667
 HU2667.The dynamic height is computed by dividing the NAVD 88
 HU2667.geopotential number by the normal gravity value computed on the
 HU2667.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2667.degrees latitude (g = 980.6199 gals.).
 HU2667
 HU2667.The modeled gravity was interpolated from observed gravity values.
 HU2667
 HU2667;                    North         East    Units  Estimated Accuracy
 HU2667;SPC MD       -   108,170.      499,160.      MT  (+/- 180 meters Scaled)
 HU2667
 HU2667_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH250766(NAD 83)
 HU2667
 HU2667                          SUPERSEDED SURVEY CONTROL
 HU2667
 HU2667  NGVD 29 (11/18/05)   14.29   (m)           46.9    (f) RESET       3  
 HU2667
 HU2667.Superseded values are not recommended for survey control.
 HU2667
 HU2667.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2667.See file dsdata.pdf to determine how the superseded data were derived.
 HU2667
 HU2667_MARKER: DV = VERTICAL CONTROL DISK
 HU2667_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU2667_SP_SET: GAS PUMP ISLAND
 HU2667_STAMPING: C 7 RESET 1984
 HU2667_MARK LOGO: NGS
 HU2667_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2667_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2667+SATELLITE: SATELLITE OBSERVATIONS - December 30, 1991
 HU2667
 HU2667  HISTORY     - Date     Condition        Report By
 HU2667  HISTORY     - 1984     MONUMENTED       NGS
 HU2667  HISTORY     - 19911230 GOOD             NGS
 HU2667  HISTORY     - 20060224 MARK NOT FOUND   MDSHA
 HU2667
 HU2667                          STATION DESCRIPTION
 HU2667
 HU2667'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2667'IN HURLOCK.
 HU2667'FROM THE RAILROAD STATION IN HURLOCK, GO WEST ON STATE HIGHWAY 307 FOR
 HU2667'0.15 KM (0.10 MI) TO THE MARK ON THE RIGHT, 18.3 M (60.0 FT)
 HU2667'NORTH-NORTHWEST FROM THE CENTER OF STATE HIGHWAY 307, 32.5 M
 HU2667'(106.6 FT) EAST-NORTHEAST FROM THE MOST EAST RAIL OF A RAILROAD
 HU2667'TRACKS, 10.2 M (33.5 FT) WEST-SOUTHWEST FROM THE SOUTHWEST CORNER OF
 HU2667'BLOCK BUILDING, 52.5 M (172.2 FT) NORTH-NORTHWEST FROM A TALL BRICK
 HU2667'SMOKE STACK AND 24.9 M (81.7 FT) NORTHEAST FROM A POWERLINE POLE
 HU2667'NUMBERED 39437 03067.
 HU2667'THE MARK IS 0.15 M ABOVE ROAD.
 HU2667
 HU2667                          STATION RECOVERY (1991)
 HU2667
 HU2667'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU2667'RECOVERED IN GOOD CONDITION.
 HU2667
 HU2667                          STATION RECOVERY (2006)
 HU2667
 HU2667'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2006 (MRA)
 HU2667'CONCRETE GAS PUMP ISLAND NO LONGER EXISTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1214 ***********************************************************************
 JU1214  DESIGNATION -  C 72
 JU1214  PID         -  JU1214
 JU1214  STATE/COUNTY-  MD/KENT
 JU1214  COUNTRY     -  US
 JU1214  USGS QUAD   -  GALENA (2017)
 JU1214
 JU1214                         *CURRENT SURVEY CONTROL
 JU1214  ______________________________________________________________________
 JU1214* NAD 83(1986) POSITION- 39 15 43.     (N) 075 54 52.     (W)   SCALED
 JU1214* NAVD 88 ORTHO HEIGHT -    15.886 (meters)       52.12  (feet) ADJUSTED
 JU1214  ______________________________________________________________________
 JU1214  GEOID HEIGHT    -        -33.554 (meters)                     GEOID18
 JU1214  DYNAMIC HEIGHT  -         15.878 (meters)       52.09  (feet) COMP
 JU1214  MODELED GRAVITY -    980,110.6   (mgal)                       NAVD 88
 JU1214
 JU1214  VERT ORDER      -  SECOND    CLASS 0
 JU1214
 JU1214.The horizontal coordinates were scaled from a map and have
 JU1214.an estimated accuracy of +/- 6 seconds.
 JU1214
 JU1214.The orthometric height was determined by differential leveling and
 JU1214.adjusted by the NATIONAL GEODETIC SURVEY
 JU1214.in June 1991.
 JU1214
 JU1214.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1214.GEOID18 height accuracy estimate available here.
 JU1214
 JU1214.Click photographs - Photos may exist for this station.
 JU1214
 JU1214.The dynamic height is computed by dividing the NAVD 88
 JU1214.geopotential number by the normal gravity value computed on the
 JU1214.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1214.degrees latitude (g = 980.6199 gals.).
 JU1214
 JU1214.The modeled gravity was interpolated from observed gravity values.
 JU1214
 JU1214;                    North         East    Units  Estimated Accuracy
 JU1214;SPC MD       -   177,640.      493,690.      MT  (+/- 180 meters Scaled)
 JU1214
 JU1214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ211462(NAD 83)
 JU1214
 JU1214                          SUPERSEDED SURVEY CONTROL
 JU1214
 JU1214  NGVD 29 (11/26/84)   16.128  (m)           52.91   (f) ADJUSTED    2 0
 JU1214
 JU1214.Superseded values are not recommended for survey control.
 JU1214
 JU1214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1214.See file dsdata.pdf to determine how the superseded data were derived.
 JU1214
 JU1214_MARKER: DB = BENCH MARK DISK
 JU1214_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1214_STAMPING: C 72 1942
 JU1214_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1214+STABILITY: SURFACE MOTION
 JU1214
 JU1214  HISTORY     - Date     Condition        Report By
 JU1214  HISTORY     - 1942     MONUMENTED       CGS
 JU1214  HISTORY     - 19890124 MARK NOT FOUND   USPSQD
 JU1214
 JU1214                          STATION DESCRIPTION
 JU1214
 JU1214'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JU1214'1.8 MI N FROM CHESTERVILLE.
 JU1214'IN KENT COUNTY, 1.8 MILES NORTH ALONG STATE HIGHWAY 290 FROM
 JU1214'THE CHESTER RIVER BRIDGE AT CRUMPTON, QUEEN ANNE COUNTY, 1 MILE
 JU1214'SOUTH OF THE CROSSROADS AT CHESTERVILLE, KENT COUNTY, AT A T-ROAD
 JU1214'JUNCTION AND THE POINT WHERE THE HIGHWAY TURNS SHARPLY TO THE
 JU1214'WEST, 30 FEET SOUTHWEST OF THE CENTER OF THE JUNCTION, 20.8 FEET
 JU1214'SOUTHEAST OF A GUY POLE, 5 FEET SOUTH OF A GUARD FENCE, 6 INCHES
 JU1214'NORTH OF AN EAST AND WEST FENCE, AND 3.5 FEET WEST OF THE NORTH
 JU1214'AND SOUTH LINE (EXTENDED) OF POLES ON THE WEST SIDE OF THE
 JU1214'HIGHWAY NORTH OF THE JUNCTION.  A STANDARD DISK, STAMPED C 72
 JU1214'1942 AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JU1214
 JU1214                          STATION RECOVERY (1989)
 JU1214
 JU1214'RECOVERY NOTE BY US POWER SQUADRON 1989 (GSW)
 JU1214'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1215 ***********************************************************************
 JU1215  HT_MOD      -  This is a Height Modernization Survey Station.
 JU1215  DESIGNATION -  C 72 RESET
 JU1215  PID         -  JU1215
 JU1215  STATE/COUNTY-  MD/KENT
 JU1215  COUNTRY     -  US
 JU1215  USGS QUAD   -  GALENA (2017)
 JU1215
 JU1215                         *CURRENT SURVEY CONTROL
 JU1215  ______________________________________________________________________
 JU1215* NAD 83(2011) POSITION- 39 15 44.44767(N) 075 54 51.43169(W)   ADJUSTED
 JU1215* NAD 83(2011) ELLIP HT-   -18.651 (meters)        (09/18/23)   ADJUSTED
 JU1215* NAD 83(2011) EPOCH   -  2010.00
 JU1215* NAVD 88 ORTHO HEIGHT -    14.89  (meters)       48.9   (feet) GPS OBS
 JU1215  ______________________________________________________________________
 JU1215  GEOID HEIGHT    -        -33.554 (meters)                     GEOID18
 JU1215  NAD 83(2011) X  -  1,203,463.786 (meters)                     COMP
 JU1215  NAD 83(2011) Y  - -4,796,251.460 (meters)                     COMP
 JU1215  NAD 83(2011) Z  -  4,014,897.699 (meters)                     COMP
 JU1215  LAPLACE CORR    -         -2.49  (seconds)                    DEFLEC18
 JU1215
 JU1215  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU1215  Standards:
 JU1215         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU1215            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU1215  -------------------------------------------------------------------
 JU1215  NETWORK    0.65   1.65           0.29   0.24   0.84     -0.08023606
 JU1215  -------------------------------------------------------------------
 JU1215  Click here for local accuracies and other accuracy information.
 JU1215
 JU1215.The horizontal coordinates were established by GPS observations
 JU1215.and adjusted by the MD DEPT OF TRANSP in September 2023.
 JU1215
 JU1215.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU1215.been affixed to the stable North American tectonic plate. See 
 JU1215.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU1215
 JU1215.The horizontal coordinates are valid at the epoch date displayed above
 JU1215.which is a decimal equivalence of Year/Month/Day.
 JU1215
 JU1215.The orthometric height was determined by GPS observations and a
 JU1215.high-resolution geoid model using precise GPS observation and
 JU1215.processing techniques.
 JU1215
 JU1215.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1215.GEOID18 height accuracy estimate available here.
 JU1215
 JU1215.Click photographs - Photos may exist for this station.
 JU1215
 JU1215.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU1215
 JU1215.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU1215
 JU1215.The ellipsoidal height was determined by GPS observations
 JU1215.and is referenced to NAD 83.
 JU1215
 JU1215. The following values were computed from the NAD 83(2011) position.
 JU1215
 JU1215;                    North         East     Units Scale Factor Converg.
 JU1215;SPC MD       -   177,687.443   493,698.365   MT  0.99997256   +0 40 53.2
 JU1215;SPC MD       -   582,962.89  1,619,742.05   sFT  0.99997256   +0 40 53.2
 JU1215;UTM  18      - 4,346,288.428   421,122.839   MT  0.99967660   -0 34 43.2
 JU1215
 JU1215!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU1215!SPC MD       -   1.00000293  x   0.99997256  =   0.99997549
 JU1215!UTM  18      -   1.00000293  x   0.99967660  =   0.99967953
 JU1215
 JU1215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2112246288(NAD 83)
 JU1215
 JU1215                          SUPERSEDED SURVEY CONTROL
 JU1215
 JU1215  NAVD 88 (11/18/05)   14.89   (m)           48.9    (f) RESET       3  
 JU1215  NGVD 29 (??/??/??)   15.14   (m)           49.7    (f) RESET       3  
 JU1215
 JU1215.Superseded values are not recommended for survey control.
 JU1215
 JU1215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1215.See file dsdata.pdf to determine how the superseded data were derived.
 JU1215
 JU1215_MARKER: DB = BENCH MARK DISK
 JU1215_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JU1215_SP_SET: CULVERT HEADWALL
 JU1215_STAMPING: C 72 RESET 1964
 JU1215_MARK LOGO: CGS
 JU1215_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1215+STABILITY: SURFACE MOTION
 JU1215_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1215+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2025
 JU1215
 JU1215  HISTORY     - Date     Condition        Report By
 JU1215  HISTORY     - 1964     MONUMENTED       CGS
 JU1215  HISTORY     - 1980     GOOD             LOCSUR
 JU1215  HISTORY     - 1989     GOOD             USPSQD
 JU1215  HISTORY     - 20050101 GOOD             USPSQD
 JU1215  HISTORY     - 20220122 GOOD             MDSHA
 JU1215  HISTORY     - 20250821 GOOD             PROFLN
 JU1215
 JU1215                          STATION DESCRIPTION
 JU1215
 JU1215'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1215'1 MI S FROM CHESTERVILLE.
 JU1215'1.0 MILE SOUTH ALONG STATE HIGHWAY 290 FROM THE CROSS ROAD AT
 JU1215'CHESTERVILLE, 1.8 MILES NORTHEAST ALONG STATE HIGHWAY 290 FROM
 JU1215'THE NORTH END OF THE CHESTER RIVER BRIDGE AT CRUMPTON QUEEN
 JU1215'ANNES COUNTY.  AT THE JUNCTIONS OF HIGHWAYS 290 AND 291, IN THE
 JU1215'WEST HEADWALL OF A CULVERT AND 1 FOOT SOUTH OF ITS NORTH END,
 JU1215'36 FEET NORTH OF CENTER LINE OF HIGHWAY 291 AND 55 FEET WEST OF
 JU1215'CENTER LINE OF HIGHWAY 290.  A STANDARD DISK SET IN A DRILL HOLE.
 JU1215
 JU1215                          STATION RECOVERY (1980)
 JU1215
 JU1215'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1980
 JU1215'NOTE--THE AREA IS OVERGROWN BY CRABGRASS.
 JU1215
 JU1215                          STATION RECOVERY (1989)
 JU1215
 JU1215'RECOVERY NOTE BY US POWER SQUADRON 1989 (GSW)
 JU1215'RECOVERED IN GOOD CONDITION.
 JU1215
 JU1215                          STATION RECOVERY (2005)
 JU1215
 JU1215'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JU1215'MARK IS ALSO 55.1 FEET E OF THE CONCRETE BASE FOR A STEEL LIGHT POST N
 JU1215'OF HIGHWAY 291.
 JU1215
 JU1215                          STATION RECOVERY (2022)
 JU1215
 JU1215'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 JU1215'RECOVERED IN GOOD CONDITION.DESCRIPTION HAS BEEN UPDATED. THE MARK IS
 JU1215'LOCATED ABOUT 9.0 MI (14.5 KM) EAST-NORTHEAST OF CHESTERTOWN, 5.3 MI
 JU1215'(8.5 KM) SOUTHEAST OF KENNEDYVILLE, 4.1 MI (6.6 KM) WEST OF MILLINGTON
 JU1215'AND 1.5 MI (2.4 KM) NORTH-NORTHEAST OF CRUMPTON.
 JU1215'
 JU1215'TO REACH THE MARK FROM THE JUNCTION OF MD 290 S AND MD 213 S, GO
 JU1215'SOUTH-SOUTHEAST ON MD 213 S FOR 0.70 MI (1.13 KM) TO AN INTERSECTION.
 JU1215'TURN RIGHT AND GO SOUTH ON MD 290 S FOR 5.41 MI (8.70 KM) TO THE
 JU1215'INTERSECTION WITH MD 291.  THE MARK IS ON THE RIGHT.
 JU1215'
 JU1215'THE MARK IS 81.6 FT (24.9 M) SOUTH-SOUTHWEST OF A METAL LIGHT POLE,
 JU1215'55.9 FT (17.0 M) EAST OF A METAL LIGHT POLE NUMBERED 141903, 54.7 FT
 JU1215'(16.7 M) WEST OF THE CENTERLINE OF STATE ROUTE MD 290, 48.1 FT (14.7
 JU1215'M) SOUTHWEST OF AN ELECTRICAL MANHOLE, 33.0 FT (10.1 M) NORTH OF THE
 JU1215'CENTERLINE OF STATE ROUTE MD 291. THE MARK IS A U.S. COASTAL GEODETIC
 JU1215'SURVEY BENCHMARK DISK SET IN A DRILL HOLE IN A CONCRETE CULVERT
 JU1215'HEADWALL.
 JU1215
 JU1215                          STATION RECOVERY (2025)
 JU1215
 JU1215'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1215'RECOVERED AS DESCRIBED.  TRIMMED OVERGROWN GRASS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9399 ***********************************************************************
 DR9399  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9399  DESIGNATION -  C 72 RESET AZ MK
 DR9399  PID         -  DR9399
 DR9399  STATE/COUNTY-  MD/KENT
 DR9399  COUNTRY     -  US
 DR9399  USGS QUAD   -  GALENA (2017)
 DR9399
 DR9399                         *CURRENT SURVEY CONTROL
 DR9399  ______________________________________________________________________
 DR9399* NAD 83(2011) POSITION- 39 15 44.86564(N) 075 54 42.56494(W)   ADJUSTED
 DR9399* NAD 83(2011) ELLIP HT-   -20.045 (meters)        (09/18/23)   ADJUSTED
 DR9399* NAD 83(2011) EPOCH   -  2010.00
 DR9399* NAVD 88 ORTHO HEIGHT -    13.50  (meters)       44.3   (feet) GPS OBS
 DR9399  ______________________________________________________________________
 DR9399  GEOID HEIGHT    -        -33.557 (meters)                     GEOID18
 DR9399  NAD 83(2011) X  -  1,203,667.714 (meters)                     COMP
 DR9399  NAD 83(2011) Y  - -4,796,190.763 (meters)                     COMP
 DR9399  NAD 83(2011) Z  -  4,014,906.797 (meters)                     COMP
 DR9399  LAPLACE CORR    -         -2.49  (seconds)                    DEFLEC18
 DR9399
 DR9399  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9399  Standards:
 DR9399         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9399            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9399  -------------------------------------------------------------------
 DR9399  NETWORK    0.65   1.65           0.29   0.24   0.84     -0.07865569
 DR9399  -------------------------------------------------------------------
 DR9399  Click here for local accuracies and other accuracy information.
 DR9399
 DR9399.The horizontal coordinates were established by GPS observations
 DR9399.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9399
 DR9399.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9399.been affixed to the stable North American tectonic plate. See 
 DR9399.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9399
 DR9399.The horizontal coordinates are valid at the epoch date displayed above
 DR9399.which is a decimal equivalence of Year/Month/Day.
 DR9399
 DR9399.The orthometric height was determined by GPS observations and a
 DR9399.high-resolution geoid model using precise GPS observation and
 DR9399.processing techniques.
 DR9399
 DR9399.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9399.GEOID18 height accuracy estimate available here.
 DR9399
 DR9399.Click photographs - Photos may exist for this station.
 DR9399
 DR9399.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9399
 DR9399.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9399
 DR9399.The ellipsoidal height was determined by GPS observations
 DR9399.and is referenced to NAD 83.
 DR9399
 DR9399. The following values were computed from the NAD 83(2011) position.
 DR9399
 DR9399;                    North         East     Units Scale Factor Converg.
 DR9399;SPC MD       -   177,702.863   493,910.760   MT  0.99997257   +0 40 58.7
 DR9399;SPC MD       -   583,013.48  1,620,438.89   sFT  0.99997257   +0 40 58.7
 DR9399;UTM  18      - 4,346,299.170   421,335.459   MT  0.99967619   -0 34 37.6
 DR9399
 DR9399!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9399!SPC MD       -   1.00000314  x   0.99997257  =   0.99997571
 DR9399!UTM  18      -   1.00000314  x   0.99967619  =   0.99967933
 DR9399
 DR9399_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2133546299(NAD 83)
 DR9399
 DR9399                          SUPERSEDED SURVEY CONTROL
 DR9399
 DR9399.No superseded survey control is available for this station.
 DR9399
 DR9399_MARKER: DD = SURVEY DISK
 DR9399_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9399_STAMPING: C 72 RESET AZ 2021
 DR9399_MARK LOGO: MD-029
 DR9399_PROJECTION: FLUSH
 DR9399_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9399_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9399+STABILITY: SURFACE MOTION
 DR9399_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9399+SATELLITE: SATELLITE OBSERVATIONS - December 26, 2021
 DR9399
 DR9399  HISTORY     - Date     Condition        Report By
 DR9399  HISTORY     - 20211226 MONUMENTED       MDSHA
 DR9399  HISTORY     - 20250821 GOOD             PROFLN
 DR9399
 DR9399                          STATION DESCRIPTION
 DR9399
 DR9399'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9399'THE MARK IS LOCATED ABOUT 9.1 MI (14.6 KM) EAST-NORTHEAST OF
 DR9399'CHESTERTOWN, 5.4 MI (8.7 KM) EAST-SOUTHEAST OF KENNEDYVILLE, 4.0 MI
 DR9399'(6.4 KM) WEST OF MILLINGTON AND 1.5 MI (2.4 KM) NORTH-NORTHEAST OF
 DR9399'CRUMPTON.
 DR9399'
 DR9399'TO REACH THE MARK FROM THE JUNCTION OF MD 290 S AND MD 213 S, GO
 DR9399'SOUTH-SOUTHEAST ON MD 213 S FOR 0.70 MI (1.13 KM) TO AN INTERSECTION.
 DR9399'TURN RIGHT AND GO SOUTH ON MD 290 S FOR 5.41 MI (8.70 KM) TO AN
 DR9399'INTERSECTION.  TURN LEFT AND GO EAST ON MD 291 E FOR 0.12 MI (0.19 KM)
 DR9399'TO THE MARK ON THE LEFT.
 DR9399'
 DR9399'THE MARK IS 103.4 FT (31.5 M) NORTH-NORTHWEST OF A UTILITY POLE
 DR9399'NUMBERED 38231-25862, 81.9 FT (25.0 M) EAST OF THE SOUTHERN WOODEN
 DR9399'POST OF TWO POST ROAD SIGN, 22.5 FT (6.9 M) NORTH OF THE CENTERLINE OF
 DR9399'STATE ROUTE MD 291 SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE
 DR9399'POST AND ABOUT LEVEL WITH THE GROUND.
 DR9399'
 DR9399'.
 DR9399
 DR9399                          STATION RECOVERY (2025)
 DR9399
 DR9399'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9399'THE MARK IS OPPOSITE A POINT THAT IS 70 FT (21.3 M) WEST OF THE
 DR9399'UTILITY POLE.  IT IS 470 FT (143.3 M) WESTERLY OF THE WEST END OF A
 DR9399'GUARD RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0219 ***********************************************************************
 HV0219  DESIGNATION -  C 73
 HV0219  PID         -  HV0219
 HV0219  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0219  COUNTRY     -  US
 HV0219  USGS QUAD   -  ANNAPOLIS (2016)
 HV0219
 HV0219                         *CURRENT SURVEY CONTROL
 HV0219  ______________________________________________________________________
 HV0219* NAD 83(1986) POSITION- 38 56 18.     (N) 076 27 54.     (W)   SCALED
 HV0219* NAVD 88 ORTHO HEIGHT -     9.618 (meters)       31.56  (feet) ADJUSTED
 HV0219  ______________________________________________________________________
 HV0219  GEOID HEIGHT    -        -33.447 (meters)                     GEOID18
 HV0219  DYNAMIC HEIGHT  -          9.613 (meters)       31.54  (feet) COMP
 HV0219  MODELED GRAVITY -    980,073.0   (mgal)                       NAVD 88
 HV0219
 HV0219  VERT ORDER      -  SECOND    CLASS 0
 HV0219
 HV0219.The horizontal coordinates were scaled from a map and have
 HV0219.an estimated accuracy of +/- 6 seconds.
 HV0219
 HV0219.The orthometric height was determined by differential leveling and
 HV0219.adjusted by the NATIONAL GEODETIC SURVEY
 HV0219.in June 1991.
 HV0219
 HV0219.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0219.GEOID18 height accuracy estimate available here.
 HV0219
 HV0219.Click photographs - Photos may exist for this station.
 HV0219
 HV0219.The dynamic height is computed by dividing the NAVD 88
 HV0219.geopotential number by the normal gravity value computed on the
 HV0219.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0219.degrees latitude (g = 980.6199 gals.).
 HV0219
 HV0219.The modeled gravity was interpolated from observed gravity values.
 HV0219
 HV0219;                    North         East    Units  Estimated Accuracy
 HV0219;SPC MD       -   141,300.      446,380.      MT  (+/- 180 meters Scaled)
 HV0219
 HV0219_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ730109(NAD 83)
 HV0219
 HV0219                          SUPERSEDED SURVEY CONTROL
 HV0219
 HV0219  NGVD 29 (11/26/84)    9.868  (m)           32.38   (f) ADJUSTED    2 0
 HV0219
 HV0219.Superseded values are not recommended for survey control.
 HV0219
 HV0219.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0219.See file dsdata.pdf to determine how the superseded data were derived.
 HV0219
 HV0219_MARKER: DB = BENCH MARK DISK
 HV0219_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0219_STAMPING: C 73 1942
 HV0219_MARK LOGO: CGS
 HV0219_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0219+STABILITY: SURFACE MOTION
 HV0219_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0219+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2005
 HV0219
 HV0219  HISTORY     - Date     Condition        Report By
 HV0219  HISTORY     - 1942     MONUMENTED       CGS
 HV0219  HISTORY     - 1942     GOOD             CGS
 HV0219  HISTORY     - 20010213 GOOD             USPSQD
 HV0219  HISTORY     - 20051215 GOOD             USPSQD
 HV0219
 HV0219                          STATION DESCRIPTION
 HV0219
 HV0219'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0219'1 MI NW FROM BAY RIDGE.
 HV0219'ABOUT 1 MILE NORTHWEST ALONG THE BAY RIDGE-ANNAPOLIS ROAD FROM
 HV0219'BAY RIDGE, 4.3 MILES SOUTHEAST OF CHURCH CIRCLE AT ANNAPOLIS,
 HV0219'AT A DIRT ROAD RUNNING SOUTH-SOUTHWEST FROM THE MAIN ROAD, 62.2
 HV0219'FEET NORTHWEST OF THE FIRST POWER-CABLE POLE SOUTHEAST OF THE
 HV0219'JUNCTION AND IS POLE NUMBER 304030, IN A WOODED AREA IN THE FORKS
 HV0219'OF THE JUNCTION, 16 FEET SOUTHWEST OF THE CENTER LINE OF THE
 HV0219'MAIN ROAD, AND IS A BENCH MARK DISK SET IN THE TOP OF A CONCRETE
 HV0219'POST PROJECTING ABOUT 8 INCHES.
 HV0219
 HV0219                          STATION RECOVERY (2001)
 HV0219
 HV0219'RECOVERY NOTE BY US POWER SQUADRON 2001 (CRA)
 HV0219'RECOVERED IN GOOD CONDITION.
 HV0219
 HV0219                          STATION RECOVERY (2005)
 HV0219
 HV0219'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV0219'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0123 ***********************************************************************
 HV0123  DESIGNATION -  C 75
 HV0123  PID         -  HV0123
 HV0123  STATE/COUNTY-  MD/QUEEN ANNES
 HV0123  COUNTRY     -  US
 HV0123  USGS QUAD   -  WYE MILLS (2016)
 HV0123
 HV0123                         *CURRENT SURVEY CONTROL
 HV0123  ______________________________________________________________________
 HV0123* NAD 83(1986) POSITION- 38 57 19.     (N) 076 05 14.     (W)   SCALED
 HV0123* NAVD 88 ORTHO HEIGHT -    17.255 (meters)       56.61  (feet) POSTED
 HV0123  ______________________________________________________________________
 HV0123  GEOID HEIGHT    -        -34.131 (meters)                     GEOID18
 HV0123  DYNAMIC HEIGHT  -         17.25  (meters)       56.6   (feet) COMP
 HV0123  MODELED GRAVITY -    980,068.4   (mgal)                       NAVD 88
 HV0123
 HV0123  VERT ORDER      -  * POSTED, SEE BELOW
 HV0123
 HV0123.The horizontal coordinates were scaled from a map and have
 HV0123.an estimated accuracy of +/- 6 seconds.
 HV0123
 HV0123.The orthometric height was determined by differential leveling
 HV0123.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0123
 HV0123.* This is a POSTED BENCH MARK height.
 HV0123
 HV0123.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0123.GEOID18 height accuracy estimate available here.
 HV0123
 HV0123.Click photographs - Photos may exist for this station.
 HV0123
 HV0123.The dynamic height is computed by dividing the NAVD 88
 HV0123.geopotential number by the normal gravity value computed on the
 HV0123.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0123.degrees latitude (g = 980.6199 gals.).
 HV0123
 HV0123.The modeled gravity was interpolated from observed gravity values.
 HV0123
 HV0123;                    North         East    Units  Estimated Accuracy
 HV0123;SPC MD       -   143,440.      479,120.      MT  (+/- 180 meters Scaled)
 HV0123
 HV0123_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ057123(NAD 83)
 HV0123
 HV0123                          SUPERSEDED SURVEY CONTROL
 HV0123
 HV0123  NGVD 29 (11/26/84)   17.473  (m)           57.33   (f) ADJUSTED    2 0
 HV0123
 HV0123.Superseded values are not recommended for survey control.
 HV0123
 HV0123.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0123.See file dsdata.pdf to determine how the superseded data were derived.
 HV0123
 HV0123_MARKER: DB = BENCH MARK DISK
 HV0123_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0123_STAMPING: C 75 1942
 HV0123_MARK LOGO: CGS
 HV0123_PROJECTION: PROJECTING 13 CENTIMETERS
 HV0123_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0123+STABILITY: SURFACE MOTION
 HV0123
 HV0123  HISTORY     - Date     Condition        Report By
 HV0123  HISTORY     - 1942     MONUMENTED       CGS
 HV0123  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0123  HISTORY     - 1983     MARK NOT FOUND   LOCSUR
 HV0123  HISTORY     - 20010324 MARK NOT FOUND   USPSQD
 HV0123
 HV0123                          STATION DESCRIPTION
 HV0123
 HV0123'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0123'1.1 MI NW FROM WYE MILLS.
 HV0123'THIS MARK IS ABOUT 1.1 MILES NORTHWEST FROM THE POST OFFICE
 HV0123'AT WYE MILLS, AND ABOUT 0.1 MILE EAST ON A DIRT ROAD LEADING
 HV0123'OFF TO THE RIGHT OF THE HIGHWAY, 16.6 FEET NORTH FROM THE CENTER
 HV0123'LINE OF THE ROAD, 10.5 FEET EAST OF POLE NUMBER 263, 32.3 FEET
 HV0123'NORTH OF POLE NUMBER 262, 1.0 FEET FROM FENCE, ABOUT 5-INCHES
 HV0123'ABOVE THE GROUND, NEAR A WHITE REFERENCE POST, AND SET IN THE
 HV0123'TOP OF A CONCRETE POST.  A STANDARD DISK.
 HV0123
 HV0123                          STATION RECOVERY (1971)
 HV0123
 HV0123'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0123'MARK NOT FOUND.
 HV0123
 HV0123                          STATION RECOVERY (1983)
 HV0123
 HV0123'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1983
 HV0123'MARK NOT FOUND.
 HV0123
 HV0123                          STATION RECOVERY (2001)
 HV0123
 HV0123'RECOVERY NOTE BY US POWER SQUADRON 2001 (KNP)
 HV0123'REFERENCED DIRT ROAD DOES NOT EXIST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0175 ***********************************************************************
 HV0175  DESIGNATION -  C 76
 HV0175  PID         -  HV0175
 HV0175  STATE/COUNTY-  MD/QUEEN ANNES
 HV0175  COUNTRY     -  US
 HV0175  USGS QUAD   -  KENT ISLAND (2016)
 HV0175
 HV0175                         *CURRENT SURVEY CONTROL
 HV0175  ______________________________________________________________________
 HV0175* NAD 83(1986) POSITION- 38 56 02.     (N) 076 21 14.     (W)   SCALED
 HV0175* NAVD 88 ORTHO HEIGHT -     5.071 (meters)       16.64  (feet) ADJUSTED
 HV0175  ______________________________________________________________________
 HV0175  GEOID HEIGHT    -        -33.635 (meters)                     GEOID18
 HV0175  DYNAMIC HEIGHT  -          5.068 (meters)       16.63  (feet) COMP
 HV0175  MODELED GRAVITY -    980,075.8   (mgal)                       NAVD 88
 HV0175
 HV0175  VERT ORDER      -  SECOND    CLASS 0
 HV0175
 HV0175.The horizontal coordinates were scaled from a map and have
 HV0175.an estimated accuracy of +/- 6 seconds.
 HV0175
 HV0175.The orthometric height was determined by differential leveling and
 HV0175.adjusted by the NATIONAL GEODETIC SURVEY
 HV0175.in June 1991.
 HV0175
 HV0175.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0175.GEOID18 height accuracy estimate available here.
 HV0175
 HV0175.Click photographs - Photos may exist for this station.
 HV0175
 HV0175.The dynamic height is computed by dividing the NAVD 88
 HV0175.geopotential number by the normal gravity value computed on the
 HV0175.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0175.degrees latitude (g = 980.6199 gals.).
 HV0175
 HV0175.The modeled gravity was interpolated from observed gravity values.
 HV0175
 HV0175;                    North         East    Units  Estimated Accuracy
 HV0175;SPC MD       -   140,870.      456,020.      MT  (+/- 180 meters Scaled)
 HV0175
 HV0175_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ826103(NAD 83)
 HV0175
 HV0175                          SUPERSEDED SURVEY CONTROL
 HV0175
 HV0175  NGVD 29 (11/26/84)    5.307  (m)           17.41   (f) ADJUSTED    2 0
 HV0175
 HV0175.Superseded values are not recommended for survey control.
 HV0175
 HV0175.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0175.See file dsdata.pdf to determine how the superseded data were derived.
 HV0175
 HV0175_MARKER: DB = BENCH MARK DISK
 HV0175_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0175_STAMPING: C 76 1942
 HV0175_MARK LOGO: CGS
 HV0175_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0175+STABILITY: SURFACE MOTION
 HV0175
 HV0175  HISTORY     - Date     Condition        Report By
 HV0175  HISTORY     - 1942     MONUMENTED       CGS
 HV0175  HISTORY     - 1945     GOOD             CGS
 HV0175  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 HV0175  HISTORY     - 20030309 MARK NOT FOUND   USPSQD
 HV0175
 HV0175                          STATION DESCRIPTION
 HV0175
 HV0175'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0175'4.2 MI SW FROM STEVENSVILLE.
 HV0175'THIS MARK IS ABOUT 4.2 MILES SOUTHWEST FROM THE WYE JUNCTION
 HV0175'AT STEVENSVILLE, AND ABOUT 1.5 MILES FROM THE T JUNCTION OF
 HV0175'HIGHWAY 404 AND 33, SET IN THE WEST SIDE OF THE HIGHWAY, IN
 HV0175'THE WOODS, 23.0 FEET WEST OF THE CENTER LINE OF THE HIGHWAY,
 HV0175'3.7 FEET NORTH OF A 12-INCH, OAK TREE, 14.2 FEET SOUTH OF A
 HV0175'4-INCH MAPLE TREE, NEAR A WHITE REFERENCE POST, AND SET IN
 HV0175'THE TOP OF A CONCRETE POST.  A STANDARD DISK.
 HV0175
 HV0175                          STATION RECOVERY (1945)
 HV0175
 HV0175'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945
 HV0175'RECOVERED IN GOOD CONDITION.
 HV0175
 HV0175                          STATION RECOVERY (1983)
 HV0175
 HV0175'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0175'MARK NOT FOUND.
 HV0175
 HV0175                          STATION RECOVERY (2003)
 HV0175
 HV0175'RECOVERY NOTE BY US POWER SQUADRON 2003 (JC)
 HV0175'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0842 ***********************************************************************
 HU0842  DESIGNATION -  C 77
 HU0842  PID         -  HU0842
 HU0842  STATE/COUNTY-  MD/CAROLINE
 HU0842  COUNTRY     -  US
 HU0842  USGS QUAD   -  DENTON (2017)
 HU0842
 HU0842                         *CURRENT SURVEY CONTROL
 HU0842  ______________________________________________________________________
 HU0842* NAD 83(1986) POSITION- 38 53 32.5    (N) 075 46 37.5    (W)   HD_HELD2
 HU0842* NAVD 88 ORTHO HEIGHT -    15.826 (meters)       51.92  (feet) ADJUSTED
 HU0842  ______________________________________________________________________
 HU0842  GEOID HEIGHT    -        -34.917 (meters)                     GEOID18
 HU0842  DYNAMIC HEIGHT  -         15.817 (meters)       51.89  (feet) COMP
 HU0842  MODELED GRAVITY -    980,040.7   (mgal)                       NAVD 88
 HU0842
 HU0842  VERT ORDER      -  SECOND    CLASS I
 HU0842
 HU0842.The horizontal coordinates were established by autonomous hand held GPS
 HU0842.observations and have an estimated accuracy of +/- 10 meters.
 HU0842
 HU0842.The orthometric height was determined by differential leveling and
 HU0842.adjusted by the NATIONAL GEODETIC SURVEY
 HU0842.in June 1991.
 HU0842
 HU0842.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0842.GEOID18 height accuracy estimate available here.
 HU0842
 HU0842.Click photographs - Photos may exist for this station.
 HU0842
 HU0842.The dynamic height is computed by dividing the NAVD 88
 HU0842.geopotential number by the normal gravity value computed on the
 HU0842.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0842.degrees latitude (g = 980.6199 gals.).
 HU0842
 HU0842.The modeled gravity was interpolated from observed gravity values.
 HU0842
 HU0842;                    North         East    Units  Estimated Accuracy
 HU0842;SPC MD       -   136,768.      506,089.      MT  (+/- 10 meters HH2 GPS)
 HU0842
 HU0842_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3260805118(NAD 83)
 HU0842
 HU0842                          SUPERSEDED SURVEY CONTROL
 HU0842
 HU0842  NGVD 29 (11/26/84)   16.066  (m)           52.71   (f) ADJUSTED    2 0
 HU0842
 HU0842.Superseded values are not recommended for survey control.
 HU0842
 HU0842.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0842.See file dsdata.pdf to determine how the superseded data were derived.
 HU0842
 HU0842_MARKER: DB = BENCH MARK DISK
 HU0842_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0842_STAMPING: C 77 1942
 HU0842_MARK LOGO: CGS
 HU0842_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0842_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0842+STABILITY: SURFACE MOTION
 HU0842_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0842+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2003
 HU0842
 HU0842  HISTORY     - Date     Condition        Report By
 HU0842  HISTORY     - 1942     MONUMENTED       CGS
 HU0842  HISTORY     - 1964     GOOD             CGS
 HU0842  HISTORY     - 19910103 GOOD             NGS
 HU0842  HISTORY     - 20021010 GOOD             MDSHA
 HU0842  HISTORY     - 20031122 GOOD             USPSQD
 HU0842
 HU0842                          STATION DESCRIPTION
 HU0842
 HU0842'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0842'1.2 MI NE FROM HOBBS.
 HU0842'1.2 MILES NORTHEAST ALONG ROAD NO. 474 FROM THE Y-JUNCTION OF A
 HU0842'DIRT ROAD AT HOBBS, CAROLINE COUNTY, THENCE 1.7 MILES NORTHEAST
 HU0842'ALONG A DIRT ROAD, 17 FEET WEST OF THE CENTERLINE OF THE ROAD,
 HU0842'16.8 FEET SOUTH OF THE SOUTHEAST CORNER OF A WIRE FENCE, 7.4
 HU0842'FEET NORTH OF A TWIN OAK TREE, 2 FEET EAST OF A WHITE WOODEN
 HU0842'WITNESS POST AND LEVEL WITH THE ROAD.  A STANDARD DISK, STAMPED
 HU0842'C 77 1942 AND SET IN THE TOP OF A CONCRETE POST.
 HU0842
 HU0842                          STATION RECOVERY (1964)
 HU0842
 HU0842'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HU0842'RECOVERED IN GOOD CONDITION.
 HU0842
 HU0842                          STATION RECOVERY (1991)
 HU0842
 HU0842'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU0842'2.3 KM (1.4 MI) EASTERLY ALONG WESLEYAN CENTER CAMPGROUND ROAD FROM
 HU0842'THE INTERSECTION OF STATE HIGHWAY 313 IN DENTON, THENCE 0.8 KM
 HU0842'(0.5 MI) NORTHERLY ALONG GARLAND ROAD, THENCE 1.6 KM (1.0 MI)
 HU0842'EASTERLY ALONG BAKER ROAD, THENCE 0.6 KM (0.4 MI) SOUTHERLY ALONG A
 HU0842'DIRT ROAD, 5.5 M (18.0 FT) WEST OF THE ROAD CENTER, 1.8 M (5.9 FT)
 HU0842'NORTH OF A TWIN TRUNK OAK TREE, 0.3 M (1.0 FT) SOUTH OF A WITNESS
 HU0842'POST, 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE ROAD, AND THE MONUMENT IS
 HU0842'FLUSH WITH THE GROUND SURFACE.
 HU0842
 HU0842                          STATION RECOVERY (2002)
 HU0842
 HU0842'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0842'RECOVERED AS DESCRIBED.
 HU0842
 HU0842                          STATION RECOVERY (2003)
 HU0842
 HU0842'RECOVERY NOTE BY US POWER SQUADRON 2003 (KN)
 HU0842'REFERENCED DIRT ROAD IS ALMS HOUSE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1308 ***********************************************************************
 JU1308  DESIGNATION -  C 78
 JU1308  PID         -  JU1308
 JU1308  STATE/COUNTY-  MD/CAROLINE
 JU1308  COUNTRY     -  US
 JU1308  USGS QUAD   -  GOLDSBORO (2017)
 JU1308
 JU1308                         *CURRENT SURVEY CONTROL
 JU1308  ______________________________________________________________________
 JU1308* NAD 83(1986) POSITION- 39 01 43.     (N) 075 45 02.     (W)   SCALED
 JU1308* NAVD 88 ORTHO HEIGHT -    15.293 (meters)       50.17  (feet) ADJUSTED
 JU1308  ______________________________________________________________________
 JU1308  GEOID HEIGHT    -        -34.514 (meters)                     GEOID18
 JU1308  DYNAMIC HEIGHT  -         15.284 (meters)       50.14  (feet) COMP
 JU1308  MODELED GRAVITY -    980,064.1   (mgal)                       NAVD 88
 JU1308
 JU1308  VERT ORDER      -  SECOND    CLASS 0
 JU1308
 JU1308.The horizontal coordinates were scaled from a map and have
 JU1308.an estimated accuracy of +/- 6 seconds.
 JU1308
 JU1308.The orthometric height was determined by differential leveling and
 JU1308.adjusted by the NATIONAL GEODETIC SURVEY
 JU1308.in June 1991.
 JU1308
 JU1308.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1308.GEOID18 height accuracy estimate available here.
 JU1308
 JU1308.Click photographs - Photos may exist for this station.
 JU1308
 JU1308.The dynamic height is computed by dividing the NAVD 88
 JU1308.geopotential number by the normal gravity value computed on the
 JU1308.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1308.degrees latitude (g = 980.6199 gals.).
 JU1308
 JU1308.The modeled gravity was interpolated from observed gravity values.
 JU1308
 JU1308;                    North         East    Units  Estimated Accuracy
 JU1308;SPC MD       -   151,920.      508,180.      MT  (+/- 180 meters Scaled)
 JU1308
 JU1308_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ350202(NAD 83)
 JU1308
 JU1308                          SUPERSEDED SURVEY CONTROL
 JU1308
 JU1308  NGVD 29 (11/26/84)   15.530  (m)           50.95   (f) ADJUSTED    2 0
 JU1308
 JU1308.Superseded values are not recommended for survey control.
 JU1308
 JU1308.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1308.See file dsdata.pdf to determine how the superseded data were derived.
 JU1308
 JU1308_MARKER: DB = BENCH MARK DISK
 JU1308_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1308_STAMPING: C 78 1942
 JU1308_MARK LOGO: CGS
 JU1308_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1308+STABILITY: SURFACE MOTION
 JU1308
 JU1308  HISTORY     - Date     Condition        Report By
 JU1308  HISTORY     - 1942     MONUMENTED       CGS
 JU1308  HISTORY     - 1964     GOOD             CGS
 JU1308  HISTORY     - 1989     MARK NOT FOUND   USPSQD
 JU1308
 JU1308                          STATION DESCRIPTION
 JU1308
 JU1308'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JU1308'2 MI E FROM GOLDSBORO.
 JU1308'2.0 MILES EAST ALONG STATE HIGHWAY 287 FROM THE T-JUNCTION OF
 JU1308'STATE HIGHWAY 311 AT GOLDSBORO, CAROLINE COUNTY, 21.4 FEET SOUTH
 JU1308'OF THE CENTERLINE OF THE HIGHWAY, IN THE SOUTHWEST ANGLE OF A
 JU1308'T-JUNCTION OF A FENCE PARALLEL TO THE HIGHWAY AND ANOTHER FENCE
 JU1308'LEADING SOUTH FROM THE HIGHWAY, AND 2 FEET NORTHWEST OF A WHITE
 JU1308'WOODEN WITNESS POST.  A STANDARD DISK, STAMPED C 78 1942 AND
 JU1308'SET IN THE TOP OF A CONCRETE POST.
 JU1308'NOTE--THE FENCES AND WOODEN WITNESS POST ARE GONE.  MARK IS NOW
 JU1308'31 FEET EAST OF TELEPHONE POLE NUMBER 36 AND 0.5 FOOT WEST OF
 JU1308'A STEEL WITNESS POST.
 JU1308
 JU1308                          STATION RECOVERY (1964)
 JU1308
 JU1308'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JU1308'RECOVERED IN GOOD CONDITION.
 JU1308
 JU1308                          STATION RECOVERY (1989)
 JU1308
 JU1308'RECOVERY NOTE BY US POWER SQUADRON 1989 (GSW)
 JU1308'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1173 ***********************************************************************
 JV1173  DESIGNATION -  C 79
 JV1173  PID         -  JV1173
 JV1173  STATE/COUNTY-  MD/BALTIMORE
 JV1173  COUNTRY     -  US
 JV1173  USGS QUAD   -  TOWSON (2016)
 JV1173
 JV1173                         *CURRENT SURVEY CONTROL
 JV1173  ______________________________________________________________________
 JV1173* NAD 83(1986) POSITION- 39 24 03.     (N) 076 34 57.     (W)   SCALED
 JV1173* NAVD 88 ORTHO HEIGHT -   116.820 (meters)      383.27  (feet) ADJUSTED
 JV1173  ______________________________________________________________________
 JV1173  GEOID HEIGHT    -        -32.623 (meters)                     GEOID18
 JV1173  DYNAMIC HEIGHT  -        116.756 (meters)      383.06  (feet) COMP
 JV1173  MODELED GRAVITY -    980,083.9   (mgal)                       NAVD 88
 JV1173
 JV1173  VERT ORDER      -  SECOND    CLASS 0
 JV1173
 JV1173.The horizontal coordinates were scaled from a map and have
 JV1173.an estimated accuracy of +/- 6 seconds.
 JV1173
 JV1173.The orthometric height was determined by differential leveling and
 JV1173.adjusted by the NATIONAL GEODETIC SURVEY
 JV1173.in June 1991.
 JV1173
 JV1173.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1173.GEOID18 height accuracy estimate available here.
 JV1173
 JV1173.Click photographs - Photos may exist for this station.
 JV1173
 JV1173.The dynamic height is computed by dividing the NAVD 88
 JV1173.geopotential number by the normal gravity value computed on the
 JV1173.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1173.degrees latitude (g = 980.6199 gals.).
 JV1173
 JV1173.The modeled gravity was interpolated from observed gravity values.
 JV1173
 JV1173;                    North         East    Units  Estimated Accuracy
 JV1173;SPC MD       -   192,590.      435,960.      MT  (+/- 180 meters Scaled)
 JV1173
 JV1173_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ637624(NAD 83)
 JV1173
 JV1173                          SUPERSEDED SURVEY CONTROL
 JV1173
 JV1173  NGVD 29 (11/26/84)  117.049  (m)          384.02   (f) ADJUSTED    2 0
 JV1173
 JV1173.Superseded values are not recommended for survey control.
 JV1173
 JV1173.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1173.See file dsdata.pdf to determine how the superseded data were derived.
 JV1173
 JV1173_MARKER: DB = BENCH MARK DISK
 JV1173_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1173_STAMPING: C 79 1942
 JV1173_MARK LOGO: CGS
 JV1173_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1173+STABILITY: SURFACE MOTION
 JV1173
 JV1173  HISTORY     - Date     Condition        Report By
 JV1173  HISTORY     - 1942     MONUMENTED       CGS
 JV1173  HISTORY     - 20010331 MARK NOT FOUND   NGS
 JV1173  HISTORY     - 20020407 MARK NOT FOUND   USPSQD
 JV1173
 JV1173                          STATION DESCRIPTION
 JV1173
 JV1173'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1173'3.2 MI SW FROM LOCH RAVEN.
 JV1173'THIS MARK IS ABOUT 3.15 MILES SOUTHWEST ALONG ROAD NUMBER 567
 JV1173'FROM THE POST OFFICE AT LOCH RAVEN, BALTIMORE COUNTY, 27.8 FEET
 JV1173'SOUTH OF THE CENTER LINE OF THE ROAD, 36.0 FEET SOUTHEAST OF POLE
 JV1173'NUMBER 3264, 57.3 FEET SOUTHWEST AND ACROSS THE ROAD FROM A
 JV1173'22-INCH OAK TREE, ABOUT 3.5 FEET HIGHER THAN THE ROAD, 2.9 FEET
 JV1173'NORTH OF A STANDARD REFERENCE POST.  A BRONZE DISK SET IN TOP OF A
 JV1173'CONCRETE POST.
 JV1173
 JV1173                          STATION RECOVERY (2001)
 JV1173
 JV1173'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV1173'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV1173
 JV1173                          STATION RECOVERY (2002)
 JV1173
 JV1173'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 JV1173'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0225 ***********************************************************************
 JV0225  DESIGNATION -  C 80
 JV0225  PID         -  JV0225
 JV0225  STATE/COUNTY-  MD/HARFORD
 JV0225  COUNTRY     -  US
 JV0225  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0225
 JV0225                         *CURRENT SURVEY CONTROL
 JV0225  ______________________________________________________________________
 JV0225* NAD 83(1986) POSITION- 39 32 58.     (N) 076 28 11.     (W)   SCALED
 JV0225* NAVD 88 ORTHO HEIGHT -   162.259 (meters)      532.34  (feet) ADJUSTED
 JV0225  ______________________________________________________________________
 JV0225  GEOID HEIGHT    -        -32.580 (meters)                     GEOID18
 JV0225  DYNAMIC HEIGHT  -        162.175 (meters)      532.07  (feet) COMP
 JV0225  MODELED GRAVITY -    980,104.7   (mgal)                       NAVD 88
 JV0225
 JV0225  VERT ORDER      -  SECOND    CLASS I
 JV0225
 JV0225.The horizontal coordinates were scaled from a map and have
 JV0225.an estimated accuracy of +/- 6 seconds.
 JV0225
 JV0225.The orthometric height was determined by differential leveling and
 JV0225.adjusted by the NATIONAL GEODETIC SURVEY
 JV0225.in December 2004.
 JV0225
 JV0225.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0225.GEOID18 height accuracy estimate available here.
 JV0225
 JV0225.Click photographs - Photos may exist for this station.
 JV0225
 JV0225.The dynamic height is computed by dividing the NAVD 88
 JV0225.geopotential number by the normal gravity value computed on the
 JV0225.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0225.degrees latitude (g = 980.6199 gals.).
 JV0225
 JV0225.The modeled gravity was interpolated from observed gravity values.
 JV0225
 JV0225;                    North         East    Units  Estimated Accuracy
 JV0225;SPC MD       -   209,140.      445,580.      MT  (+/- 180 meters Scaled)
 JV0225
 JV0225_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ737787(NAD 83)
 JV0225
 JV0225                          SUPERSEDED SURVEY CONTROL
 JV0225
 JV0225  NAVD 88 (06/15/91)  162.288  (m)          532.44   (f) SUPERSEDED  2 0
 JV0225  NGVD 29 (11/26/84)  162.531  (m)          533.24   (f) ADJUSTED    2 0
 JV0225
 JV0225.Superseded values are not recommended for survey control.
 JV0225
 JV0225.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0225.See file dsdata.pdf to determine how the superseded data were derived.
 JV0225
 JV0225_MARKER: DB = BENCH MARK DISK
 JV0225_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0225_STAMPING: C 80 1942
 JV0225_MARK LOGO: CGS
 JV0225_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0225_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0225+STABILITY: SURFACE MOTION
 JV0225
 JV0225  HISTORY     - Date     Condition        Report By
 JV0225  HISTORY     - 1942     MONUMENTED       CGS
 JV0225  HISTORY     - 1971     GOOD             NGS
 JV0225  HISTORY     - 19991226 POOR             USPSQD
 JV0225  HISTORY     - 20010103 GOOD             MDSHA
 JV0225
 JV0225                          STATION DESCRIPTION
 JV0225
 JV0225'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0225'0.6 MI NE FROM UPPER CROSSROADS.
 JV0225'ABOUT 0.55 MILE NORTHEAST ALONG HIGHWAY 165 FROM THE INTERSECTION
 JV0225'AT UPPER CROSSROADS, HARFORD COUNTY, 26.0 FEET SOUTHEAST OF THE
 JV0225'CENTER LINE OF THE HIGHWAY, 26.0 FEET SOUTH OF THE CENTER LINE
 JV0225'OF THE DRIVE WAY, 3.2 FEET NORTH OF POLE NUMBER 90465, 21.0 FEET
 JV0225'SOUTHWEST OF THE SOUTH ROCK PILLOW AT THE ENTRANCE OF THE DRIVE
 JV0225'WAY, 5.0 FEET SOUTH OF A RETAINING WALL, ABOUT 4.5 FEET HIGHER
 JV0225'THAN THE HIGHWAY, STAMPED C 80 1942.
 JV0225
 JV0225                          STATION RECOVERY (1971)
 JV0225
 JV0225'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0225'RECOVERED IN GOOD CONDITION.
 JV0225
 JV0225                          STATION RECOVERY (1999)
 JV0225
 JV0225'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV0225'MARK RECOVERED IN POOR CONDITION.
 JV0225
 JV0225                          STATION RECOVERY (2001)
 JV0225
 JV0225'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV0225'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1660 ***********************************************************************
 JV1660  DESIGNATION -  C 81
 JV1660  PID         -  JV1660
 JV1660  STATE/COUNTY-  MD/CARROLL
 JV1660  COUNTRY     -  US
 JV1660  USGS QUAD   -  MANCHESTER (2016)
 JV1660
 JV1660                         *CURRENT SURVEY CONTROL
 JV1660  ______________________________________________________________________
 JV1660* NAD 83(1986) POSITION- 39 41 07.     (N) 076 59 22.     (W)   SCALED
 JV1660* NAVD 88 ORTHO HEIGHT -   194.696 (meters)      638.77  (feet) ADJUSTED
 JV1660  ______________________________________________________________________
 JV1660  GEOID HEIGHT    -        -32.599 (meters)                     GEOID18
 JV1660  DYNAMIC HEIGHT  -        194.595 (meters)      638.43  (feet) COMP
 JV1660  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 JV1660
 JV1660  VERT ORDER      -  SECOND    CLASS 0
 JV1660
 JV1660.The horizontal coordinates were scaled from a map and have
 JV1660.an estimated accuracy of +/- 6 seconds.
 JV1660
 JV1660.The orthometric height was determined by differential leveling and
 JV1660.adjusted by the NATIONAL GEODETIC SURVEY
 JV1660.in June 1991.
 JV1660
 JV1660.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1660.GEOID18 height accuracy estimate available here.
 JV1660
 JV1660.Click photographs - Photos may exist for this station.
 JV1660
 JV1660.The dynamic height is computed by dividing the NAVD 88
 JV1660.geopotential number by the normal gravity value computed on the
 JV1660.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1660.degrees latitude (g = 980.6199 gals.).
 JV1660
 JV1660.The modeled gravity was interpolated from observed gravity values.
 JV1660
 JV1660;                    North         East    Units  Estimated Accuracy
 JV1660;SPC MD       -   224,090.      400,910.      MT  (+/- 180 meters Scaled)
 JV1660
 JV1660_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ293947(NAD 83)
 JV1660
 JV1660                          SUPERSEDED SURVEY CONTROL
 JV1660
 JV1660  NGVD 29 (11/26/84)  194.895  (m)          639.42   (f) ADJUSTED    2 0
 JV1660
 JV1660.Superseded values are not recommended for survey control.
 JV1660
 JV1660.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1660.See file dsdata.pdf to determine how the superseded data were derived.
 JV1660
 JV1660_MARKER: DB = BENCH MARK DISK
 JV1660_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1660_SP_SET: BRIDGE
 JV1660_STAMPING: C 81 1942
 JV1660_MARK LOGO: CGS
 JV1660_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1660
 JV1660  HISTORY     - Date     Condition        Report By
 JV1660  HISTORY     - 1942     MONUMENTED       CGS
 JV1660  HISTORY     - 20020305 MARK NOT FOUND   NGS
 JV1660
 JV1660                          STATION DESCRIPTION
 JV1660
 JV1660'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1660'2.7 MI E FROM UNION MILLS.
 JV1660'2.7 MILES EAST ALONG DEEP RUN ROAD FROM THE POST OFFICE AT
 JV1660'UNION MILLS, CARROLL COUNTY, AT THE JUNCTION OF A ROAD LEADING
 JV1660'NORTH, 56.7 FEET WEST OF THE CENTER LINE OF THE SIDE ROAD, 8.6
 JV1660'FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, AT A BRIDGE, AND IN
 JV1660'THE NORTHEAST PILLAR.  A STANDARD DISK, STAMPED C 81 1942.
 JV1660
 JV1660                          STATION RECOVERY (2002)
 JV1660
 JV1660'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (CSM)
 JV1660'THE BRIDGE IN WHICH THE MARK WAS LOCATED HAS BEEN REBUILT AND THE OLD
 JV1660'STRUCTURE REMOVED. THE CARROLL COUNTY SURVEYORS OFFICE HAS SET A MARK
 JV1660'IN THE NEW STRUCTURE DESIGNATED AS C 81 RESET 1983. THE NEW MARK IS
 JV1660'NOT IN THE NGSIDB. THE ORIGINAL DISK WAS NOT RETRIEVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1957 ***********************************************************************
 JV1957  DESIGNATION -  C 82
 JV1957  PID         -  JV1957
 JV1957  STATE/COUNTY-  MD/FREDERICK
 JV1957  COUNTRY     -  US
 JV1957  USGS QUAD   -  EMMITSBURG (2016)
 JV1957
 JV1957                         *CURRENT SURVEY CONTROL
 JV1957  ______________________________________________________________________
 JV1957* NAD 83(1986) POSITION- 39 41 58.75   (N) 077 17 49.00   (W)   HD_HELD1
 JV1957* NAVD 88 ORTHO HEIGHT -   116.087 (meters)      380.86  (feet) ADJUSTED
 JV1957  ______________________________________________________________________
 JV1957  GEOID HEIGHT    -        -33.303 (meters)                     GEOID18
 JV1957  DYNAMIC HEIGHT  -        116.025 (meters)      380.66  (feet) COMP
 JV1957  MODELED GRAVITY -    980,087.0   (mgal)                       NAVD 88
 JV1957
 JV1957  VERT ORDER      -  SECOND    CLASS 0
 JV1957
 JV1957.The horizontal coordinates were determined by differentially corrected
 JV1957.hand held GPS observations or other comparable positioning techniques
 JV1957.and have an estimated accuracy of +/- 3 meters.
 JV1957
 JV1957.The orthometric height was determined by differential leveling and
 JV1957.adjusted by the NATIONAL GEODETIC SURVEY
 JV1957.in June 1991.
 JV1957
 JV1957.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1957.GEOID18 height accuracy estimate available here.
 JV1957
 JV1957.Click photographs - Photos may exist for this station.
 JV1957
 JV1957.The dynamic height is computed by dividing the NAVD 88
 JV1957.geopotential number by the normal gravity value computed on the
 JV1957.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1957.degrees latitude (g = 980.6199 gals.).
 JV1957
 JV1957.The modeled gravity was interpolated from observed gravity values.
 JV1957
 JV1957;                    North         East    Units  Estimated Accuracy
 JV1957;SPC MD       -   225,723.8     374,530.7     MT  (+/- 3 meters HH1 GPS) 
 JV1957
 JV1957_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0306796944(NAD 83)
 JV1957
 JV1957                          SUPERSEDED SURVEY CONTROL
 JV1957
 JV1957  NGVD 29 (11/26/84)  116.284  (m)          381.51   (f) ADJUSTED    2 0
 JV1957
 JV1957.Superseded values are not recommended for survey control.
 JV1957
 JV1957.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1957.See file dsdata.pdf to determine how the superseded data were derived.
 JV1957
 JV1957_MARKER: DB = BENCH MARK DISK
 JV1957_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1957_SP_SET: BRIDGE
 JV1957_STAMPING: C 82 1942
 JV1957_MARK LOGO: CGS
 JV1957_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1957_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1957+SATELLITE: SATELLITE OBSERVATIONS - March 24, 2010
 JV1957
 JV1957  HISTORY     - Date     Condition        Report By
 JV1957  HISTORY     - 1942     MONUMENTED       CGS
 JV1957  HISTORY     - 1990     GOOD             USPSQD
 JV1957  HISTORY     - 20050830 GOOD             GEOCAC
 JV1957  HISTORY     - 20100324 GOOD             NGS
 JV1957  HISTORY     - 20230315 MARK NOT FOUND   PROFLN
 JV1957
 JV1957                          STATION DESCRIPTION
 JV1957
 JV1957'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1957'1.6 MI SE FROM EMMITSBURG.
 JV1957'1.6 MILES SOUTHEAST ALONG STATE HIGHWAY 32 FROM THE POST OFFICE
 JV1957'AT EMMITSBURG, FREDERICK COUNTY, 21.3 FEET SOUTHEAST OF MILEPOST
 JV1957'33, AT A BRIDGE OVER CLEAR CREEK, IN THE TOP OF THE NORTHWEST
 JV1957'END OF THE WALL, 20.5 FEET SOUTHWEST OF THE CENTER LINE OF THE
 JV1957'HIGHWAY, AND ABOUT 1 FOOT HIGHER THAN THE HIGHWAY.  A STANDARD
 JV1957'DISK STAMPED C 82 1942.
 JV1957
 JV1957                          STATION RECOVERY (1990)
 JV1957
 JV1957'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1957'RECOVERED IN GOOD CONDITION.
 JV1957
 JV1957                          STATION RECOVERY (2005)
 JV1957
 JV1957'RECOVERY NOTE BY GEOCACHING 2005 (RCF)
 JV1957'1.6 MILES SOUTHEAST ALONG STATE HIGHWAY 140 FROM EMMITSBURG, AT A
 JV1957'BRIDGE OVER CLEAR CREEK, IN THE TOP OF THE NORTHWEST END OF THE WALL,
 JV1957'20.5 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 1
 JV1957'FOOT HIGHER THAN THE HIGHWAY.
 JV1957
 JV1957                          STATION RECOVERY (2010)
 JV1957
 JV1957'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV1957'RECOVERED IN GOOD CONDITION.
 JV1957
 JV1957                          STATION RECOVERY (2023)
 JV1957
 JV1957'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2023 (JRO)
 JV1957'SEARCHED FOR, NOT FOUND, BELIEVED LOST.  THE 10 FT (3.0 M) SECTION OF
 JV1957'CURB IN WHICH THE MARK WAS APPARENTLY SET HAS CRUMBLED.  THE TOP OF
 JV1957'THE WALL CALLED FOR HAS NO DISK.  NO MILE POST NOW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1682 ***********************************************************************
 JV1682  DESIGNATION -  C 83
 JV1682  PID         -  JV1682
 JV1682  STATE/COUNTY-  MD/CARROLL
 JV1682  COUNTRY     -  US
 JV1682  USGS QUAD   -  LINEBORO (2016)
 JV1682
 JV1682                         *CURRENT SURVEY CONTROL
 JV1682  ______________________________________________________________________
 JV1682* NAD 83(1986) POSITION- 39 42 37.46   (N) 076 49 36.15   (W)   HD_HELD1
 JV1682* NAVD 88 ORTHO HEIGHT -   196.866 (meters)      645.88  (feet) ADJUSTED
 JV1682  ______________________________________________________________________
 JV1682  GEOID HEIGHT    -        -32.418 (meters)                     GEOID18
 JV1682  DYNAMIC HEIGHT  -        196.764 (meters)      645.55  (feet) COMP
 JV1682  MODELED GRAVITY -    980,108.4   (mgal)                       NAVD 88
 JV1682
 JV1682  VERT ORDER      -  SECOND    CLASS 0
 JV1682
 JV1682.The horizontal coordinates were determined by differentially corrected
 JV1682.hand held GPS observations or other comparable positioning techniques
 JV1682.and have an estimated accuracy of +/- 3 meters.
 JV1682
 JV1682.The orthometric height was determined by differential leveling and
 JV1682.adjusted by the NATIONAL GEODETIC SURVEY
 JV1682.in June 1991.
 JV1682
 JV1682.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1682.GEOID18 height accuracy estimate available here.
 JV1682
 JV1682.Click photographs - Photos may exist for this station.
 JV1682
 JV1682.The dynamic height is computed by dividing the NAVD 88
 JV1682.geopotential number by the normal gravity value computed on the
 JV1682.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1682.degrees latitude (g = 980.6199 gals.).
 JV1682
 JV1682.The modeled gravity was interpolated from observed gravity values.
 JV1682
 JV1682;                    North         East    Units  Estimated Accuracy
 JV1682;SPC MD       -   226,890.5     414,861.2     MT  (+/- 3 meters HH1 GPS) 
 JV1682
 JV1682_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4341197211(NAD 83)
 JV1682
 JV1682                          SUPERSEDED SURVEY CONTROL
 JV1682
 JV1682  NGVD 29 (11/26/84)  197.079  (m)          646.58   (f) ADJUSTED    2 0
 JV1682
 JV1682.Superseded values are not recommended for survey control.
 JV1682
 JV1682.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1682.See file dsdata.pdf to determine how the superseded data were derived.
 JV1682
 JV1682_MARKER: DB = BENCH MARK DISK
 JV1682_SETTING: 80 = SET IN A BOULDER
 JV1682_STAMPING: C 83 1942
 JV1682_MARK LOGO: CGS
 JV1682_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1682+STABILITY: SURFACE MOTION
 JV1682_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1682+SATELLITE: SATELLITE OBSERVATIONS - July 24, 2004
 JV1682
 JV1682  HISTORY     - Date     Condition        Report By
 JV1682  HISTORY     - 1942     MONUMENTED       CGS
 JV1682  HISTORY     - 20040724 GOOD             GEOCAC
 JV1682  HISTORY     - 20070402 GOOD             MD-005
 JV1682  HISTORY     - 20140517 GOOD             RODCON
 JV1682
 JV1682                          STATION DESCRIPTION
 JV1682
 JV1682'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1682'1.4 MI SE FROM LINEBORO.
 JV1682'1.4 MILES SOUTHEAST ALONG THE WESTERN MARYLAND RAILWAY FROM THE
 JV1682'STATION AT LINEBORO, CARROLL COUNTY, 228 FEET NORTH OF MILEPOST
 JV1682'20-20, AT A DIRT-ROAD CROSSING, 14.9 FEET EAST OF THE CENTER LINE
 JV1682'OF THE TRACK, 12.6 FEET SOUTHWEST OF THE CENTER LINE OF THE DIRT
 JV1682'ROAD, 2.7 FEET SOUTHWEST OF THE CROSSING-WARNING SIGN, AND IN
 JV1682'THE TOP OF A BOULDER.  A STANDARD DISK, STAMPED C 83 1942.
 JV1682
 JV1682                          STATION RECOVERY (2004)
 JV1682
 JV1682'RECOVERY NOTE BY GEOCACHING 2004 (DH)
 JV1682'RECOVERED IN GOOD CONDITION.
 JV1682
 JV1682                          STATION RECOVERY (2007)
 JV1682
 JV1682'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (P)
 JV1682'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2007 (PAS).
 JV1682'A COMPLETE DESCRIPTION FOLLOWS - THE STATION IS LOCATED 1.1 MILES
 JV1682'SOUTHEAST OF LINEBORO IN CARROLL COUNTY.
 JV1682'TO REACH THE STATION FROM THE INTERSECTION OF MARYLAND ROUTE 86 (MAIN
 JV1682'STREET) AND MILL STREET, IN LINEBORO, PROCEED SOUTHEAST ON MILL STREET
 JV1682'SOUTH, 0.2 MILE TO BAUGHMAN MILL ROAD.
 JV1682'TURN LEFT ON BAUGHMAN MILL ROAD AND PROCEED SOUTHEAST AND NORTHEAST
 JV1682'FOR 0.7 MILE TO YORK ROAD 1.
 JV1682'TURN RIGHT ON YORK ROAD 1 AND PROCEED SOUTHWEST 0.3 MILE TO AN
 JV1682'INTERSECTION. TURN LEFT AND PROCEED SOUTHEAST FOR 0.1 MILE TO KERN
 JV1682'ROAD.
 JV1682'TURN LEFT ON TO KERN ROAD AND PROCEED NORTHEAST AND SOUTHEAST FOR 0.3
 JV1682'MILE TO A RAILROAD CROSSING. PROCEED ACROSS THE RAILROAD TO THE
 JV1682'STATION MARK ON THE RIGHT.
 JV1682'THE STATION IS A STANDARD USCG BENCH MARK DISK SET IN THE TOP OF A
 JV1682'BOULDER ABOUT 2 FEET ABOVE THE GRAVEL ROAD SURFACE.
 JV1682'IT IS 14.8 FEET EAST OF THE CENTERLINE TRACK, 10.1 FEET SOUTHWEST OF
 JV1682'THE CENTERLINE OF KERN ROAD (11.4 FEET WIDE, GRAVEL ROAD), 39.1 FEET
 JV1682'SOUTHEAST OF THE INTERSECTION OF THE CENTERLINE OF KERN ROAD WITH THE
 JV1682'CENTERLINE OF THE TRACK, 2.6 FEET WEST OF THE RAILROAD-CROSSING SIGN
 JV1682'ON THE EAST SIDE OF THE TRACK AND 48.7 FEET SOUTHWEST OF THE
 JV1682'RAILROAD-CROSSING SIGN ON THE WEST SIDE OF THE TRACK.
 JV1682'THE STATION IS LOCATED IN A MODERATELY WOODED AREA WITH SOME AREAS
 JV1682'OPEN TO THE SKY. GPS OBSERVATIONS MAY BE OBTAINED SEASONALLY AND NOT
 JV1682'YEAR-ROUND. THIS UPDATED APPROXIMATE POSITION WAS OBTAINED FOR THE
 JV1682'STATION, 39-42-37.46(N) AND 76-49-36.15(W).
 JV1682
 JV1682                          STATION RECOVERY (2014)
 JV1682
 JV1682'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV1682'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1206 ***********************************************************************
 HV1206  DESIGNATION -  C 84 RESET
 HV1206  PID         -  HV1206
 HV1206  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1206  COUNTRY     -  US
 HV1206  USGS QUAD   -  LANHAM (2016)
 HV1206
 HV1206                         *CURRENT SURVEY CONTROL
 HV1206  ______________________________________________________________________
 HV1206* NAD 83(1986) POSITION- 38 53 34.     (N) 076 50 42.     (W)   SCALED
 HV1206* NAVD 88 ORTHO HEIGHT -    35.46  (meters)      116.3   (feet) RESET
 HV1206  ______________________________________________________________________
 HV1206  GEOID HEIGHT    -        -32.496 (meters)                     GEOID18
 HV1206  VERT ORDER      -  THIRD
 HV1206
 HV1206.The horizontal coordinates were scaled from a map and have
 HV1206.an estimated accuracy of +/- 6 seconds.
 HV1206
 HV1206.The orthometric height was computed from unverified reset data.
 HV1206
 HV1206.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1206.GEOID18 height accuracy estimate available here.
 HV1206
 HV1206.Click photographs - Photos may exist for this station.
 HV1206
 HV1206;                    North         East    Units  Estimated Accuracy
 HV1206;SPC MD       -   136,120.      413,450.      MT  (+/- 180 meters Scaled)
 HV1206
 HV1206_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ399064(NAD 83)
 HV1206
 HV1206                          SUPERSEDED SURVEY CONTROL
 HV1206
 HV1206  NGVD 29 (??/??/??)   35.70   (m)          117.1    (f) RESET       3  
 HV1206
 HV1206.Superseded values are not recommended for survey control.
 HV1206
 HV1206.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1206.See file dsdata.pdf to determine how the superseded data were derived.
 HV1206
 HV1206_MARKER: DB = BENCH MARK DISK
 HV1206_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1206_SP_SET: INTERCHANGE COLUMN
 HV1206_STAMPING: C 84 RESET 1963
 HV1206_MARK LOGO: CGS
 HV1206_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1206
 HV1206  HISTORY     - Date     Condition        Report By
 HV1206  HISTORY     - 1963     MONUMENTED       MDSRC
 HV1206
 HV1206                          STATION DESCRIPTION
 HV1206
 HV1206'DESCRIBED BY MD STATE ROADS COMM 1963
 HV1206'1 MI W FROM LARGO.
 HV1206'ABOUT 1 MILE WEST OF LARGO, AND LOCATED AT THE CAPITOL BELTWAY
 HV1206'INTERCHANGE OF MD. ROUTE 214 (CENTRAL AVE.), SET VERTICALLY
 HV1206'IN THE SOUTHEAST FACE OF THE MOST NORTHEASTERLY COLUMN, 31.0
 HV1206'FEET NORTH OF THE CENTERLINE OF MD. ROUTE 214, 2.0 FEET NORTHEAST
 HV1206'OF THE DRAIN OUTLET IN THE CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1152 ***********************************************************************
 HV1152  DESIGNATION -  C 85
 HV1152  PID         -  HV1152
 HV1152  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1152  COUNTRY     -  US
 HV1152  USGS QUAD   -  BOWIE (2016)
 HV1152
 HV1152                         *CURRENT SURVEY CONTROL
 HV1152  ______________________________________________________________________
 HV1152* NAD 83(1986) POSITION- 38 53 18.     (N) 076 44 26.     (W)   SCALED
 HV1152* NAVD 88 ORTHO HEIGHT -    22.110 (meters)       72.54  (feet) ADJUSTED
 HV1152  ______________________________________________________________________
 HV1152  GEOID HEIGHT    -        -32.812 (meters)                     GEOID18
 HV1152  DYNAMIC HEIGHT  -         22.097 (meters)       72.50  (feet) COMP
 HV1152  MODELED GRAVITY -    980,076.5   (mgal)                       NAVD 88
 HV1152
 HV1152  VERT ORDER      -  SECOND    CLASS 0
 HV1152
 HV1152.The horizontal coordinates were scaled from a map and have
 HV1152.an estimated accuracy of +/- 6 seconds.
 HV1152
 HV1152.The orthometric height was determined by differential leveling and
 HV1152.adjusted by the NATIONAL GEODETIC SURVEY
 HV1152.in June 1991.
 HV1152
 HV1152.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1152.GEOID18 height accuracy estimate available here.
 HV1152
 HV1152.Click photographs - Photos may exist for this station.
 HV1152
 HV1152.The dynamic height is computed by dividing the NAVD 88
 HV1152.geopotential number by the normal gravity value computed on the
 HV1152.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1152.degrees latitude (g = 980.6199 gals.).
 HV1152
 HV1152.The modeled gravity was interpolated from observed gravity values.
 HV1152
 HV1152;                    North         East    Units  Estimated Accuracy
 HV1152;SPC MD       -   135,640.      422,510.      MT  (+/- 180 meters Scaled)
 HV1152
 HV1152_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ490058(NAD 83)
 HV1152
 HV1152                          SUPERSEDED SURVEY CONTROL
 HV1152
 HV1152  NGVD 29 (11/26/84)   22.371  (m)           73.40   (f) ADJUSTED    2 0
 HV1152
 HV1152.Superseded values are not recommended for survey control.
 HV1152
 HV1152.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1152.See file dsdata.pdf to determine how the superseded data were derived.
 HV1152
 HV1152_MARKER: DB = BENCH MARK DISK
 HV1152_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV1152_SP_SET: CULVERT
 HV1152_STAMPING: C 85 1942
 HV1152_MARK LOGO: CGS
 HV1152_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1152
 HV1152  HISTORY     - Date     Condition        Report By
 HV1152  HISTORY     - 1942     MONUMENTED       CGS
 HV1152
 HV1152                          STATION DESCRIPTION
 HV1152
 HV1152'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1152'1.1 MI S FROM HALL.
 HV1152'ABOUT 1.1 MILES SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 HV1152'POST OFFICE AT HALL, PRINCE GEORGES COUNTY, ABOUT 0.3 MILE NORTH
 HV1152'OF MILEPOST 9-40, IN THE CENTER OF THE TOP OF THE WEST CONCRETE
 HV1152'HEAD WALL OF A LARGE CULVERT, AND ABOUT 1 FOOT LOWER THAN THE
 HV1152'RAIL.  A STANDARD DISK, STAMPED C 85 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1072 ***********************************************************************
 HV1072  DESIGNATION -  C 86
 HV1072  PID         -  HV1072
 HV1072  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1072  COUNTRY     -  US
 HV1072  USGS QUAD   -  PISCATAWAY (2016)
 HV1072
 HV1072                         *CURRENT SURVEY CONTROL
 HV1072  ______________________________________________________________________
 HV1072* NAD 83(1986) POSITION- 38 42 12.33   (N) 076 58 28.24   (W)   HD_HELD1
 HV1072* NAVD 88 ORTHO HEIGHT -     5.332 (meters)       17.49  (feet) ADJUSTED
 HV1072  ______________________________________________________________________
 HV1072  GEOID HEIGHT    -        -32.546 (meters)                     GEOID18
 HV1072  DYNAMIC HEIGHT  -          5.329 (meters)       17.48  (feet) COMP
 HV1072  MODELED GRAVITY -    980,074.3   (mgal)                       NAVD 88
 HV1072
 HV1072  VERT ORDER      -  SECOND    CLASS 0
 HV1072
 HV1072.The horizontal coordinates were determined by differentially corrected
 HV1072.hand held GPS observations or other comparable positioning techniques
 HV1072.and have an estimated accuracy of +/- 3 meters.
 HV1072
 HV1072.The orthometric height was determined by differential leveling and
 HV1072.adjusted by the NATIONAL GEODETIC SURVEY
 HV1072.in June 1991.
 HV1072
 HV1072.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1072.GEOID18 height accuracy estimate available here.
 HV1072
 HV1072.Click photographs - Photos may exist for this station.
 HV1072
 HV1072.The dynamic height is computed by dividing the NAVD 88
 HV1072.geopotential number by the normal gravity value computed on the
 HV1072.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1072.degrees latitude (g = 980.6199 gals.).
 HV1072
 HV1072.The modeled gravity was interpolated from observed gravity values.
 HV1072
 HV1072;                    North         East    Units  Estimated Accuracy
 HV1072;SPC MD       -   115,084.6     402,217.1     MT  (+/- 3 meters HH1 GPS) 
 HV1072
 HV1072_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2830485716(NAD 83)
 HV1072
 HV1072                          SUPERSEDED SURVEY CONTROL
 HV1072
 HV1072  NGVD 29 (05/01/89)    5.569  (m)           18.27   (f) ADJUSTED    2 0
 HV1072  NGVD 29 (??/??/87)    5.601  (m)           18.38   (f) SUPERSEDED  2 0
 HV1072
 HV1072.Superseded values are not recommended for survey control.
 HV1072
 HV1072.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1072.See file dsdata.pdf to determine how the superseded data were derived.
 HV1072
 HV1072_MARKER: DB = BENCH MARK DISK
 HV1072_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1072_SP_SET: BRIDGE
 HV1072_STAMPING: C 86 1942
 HV1072_MARK LOGO: CGS
 HV1072_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1072_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1072+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2004
 HV1072
 HV1072  HISTORY     - Date     Condition        Report By
 HV1072  HISTORY     - 1942     MONUMENTED       CGS
 HV1072  HISTORY     - 1966     GOOD             CGS
 HV1072  HISTORY     - 20040726 GOOD             GEOCAC
 HV1072
 HV1072                          STATION DESCRIPTION
 HV1072
 HV1072'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1072'3.3 MI SE FROM SILESIA.
 HV1072'ALONG HIGHWAY 224 ABOUT 3.3 MILES SOUTHEAST OF THE ROBERT
 HV1072'TILCH STORE AT SILESIA, ABOUT 1 MILE WEST-NORTHWEST OF PISCATAWAY,
 HV1072'AT A CONCRETE BRIDGE OVER PISCATAWAY CREEK, 2.8 FEET SOUTHEAST
 HV1072'OF THE NORTHWEST END OF THE BRIDGEWALL, 3.3 FEET HIGHER THAN
 HV1072'THE BRIDGE FLOOR, SET IN THE TOP OF THE BRIDGE WALL, A BENCH
 HV1072'MARK DISK SET IN A DRILL HOLE.
 HV1072
 HV1072                          STATION RECOVERY (1966)
 HV1072
 HV1072'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 HV1072'RECOVERED IN GOOD CONDITION.
 HV1072
 HV1072                          STATION RECOVERY (2004)
 HV1072
 HV1072'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV1072'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2377 ***********************************************************************
 JV2377  DESIGNATION -  C 88
 JV2377  PID         -  JV2377
 JV2377  STATE/COUNTY-  MD/FREDERICK
 JV2377  COUNTRY     -  US
 JV2377  USGS QUAD   -  FREDERICK (2016)
 JV2377
 JV2377                         *CURRENT SURVEY CONTROL
 JV2377  ______________________________________________________________________
 JV2377* NAD 83(1986) POSITION- 39 25 18.     (N) 077 29 03.     (W)   SCALED
 JV2377* NAVD 88 ORTHO HEIGHT -   170.423 (meters)      559.13  (feet) ADJUSTED
 JV2377  ______________________________________________________________________
 JV2377  GEOID HEIGHT    -        -32.841 (meters)                     GEOID18
 JV2377  DYNAMIC HEIGHT  -        170.330 (meters)      558.82  (feet) COMP
 JV2377  MODELED GRAVITY -    980,080.8   (mgal)                       NAVD 88
 JV2377
 JV2377  VERT ORDER      -  SECOND    CLASS 0
 JV2377
 JV2377.The horizontal coordinates were scaled from a map and have
 JV2377.an estimated accuracy of +/- 6 seconds.
 JV2377
 JV2377.The orthometric height was determined by differential leveling and
 JV2377.adjusted by the NATIONAL GEODETIC SURVEY
 JV2377.in June 1991.
 JV2377
 JV2377.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2377.GEOID18 height accuracy estimate available here.
 JV2377
 JV2377.Click photographs - Photos may exist for this station.
 JV2377
 JV2377.The dynamic height is computed by dividing the NAVD 88
 JV2377.geopotential number by the normal gravity value computed on the
 JV2377.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2377.degrees latitude (g = 980.6199 gals.).
 JV2377
 JV2377.The modeled gravity was interpolated from observed gravity values.
 JV2377
 JV2377;                    North         East    Units  Estimated Accuracy
 JV2377;SPC MD       -   194,930.      358,310.      MT  (+/- 180 meters Scaled)
 JV2377
 JV2377_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ861665(NAD 83)
 JV2377
 JV2377                          SUPERSEDED SURVEY CONTROL
 JV2377
 JV2377  NGVD 29 (11/26/84)  170.642  (m)          559.85   (f) ADJUSTED    2 0
 JV2377
 JV2377.Superseded values are not recommended for survey control.
 JV2377
 JV2377.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2377.See file dsdata.pdf to determine how the superseded data were derived.
 JV2377
 JV2377_MARKER: DB = BENCH MARK DISK
 JV2377_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2377_SP_SET: BRIDGE
 JV2377_STAMPING: C 88 1942
 JV2377_MARK LOGO: CGS
 JV2377_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2377
 JV2377  HISTORY     - Date     Condition        Report By
 JV2377  HISTORY     - 1942     MONUMENTED       CGS
 JV2377
 JV2377                          STATION DESCRIPTION
 JV2377
 JV2377'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2377'3.6 MI W FROM FREDERICK.
 JV2377'THIS MARK IS ABOUT 3.55 MILES WEST ALONG HIGHWAY 40 FROM THE WYE
 JV2377'JUNCTION OF HIGHWAY 40 AND HIGHWAY 340 AT FREDERICK, FREDERICK
 JV2377'COUNTY, 20.3 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 159.0
 JV2377'FEET SOUTHEAST OF HIGHWAY MARKER NUMBER 29, 3.8 FEET SOUTHEAST
 JV2377'OF THE NORTHWEST END OF A CONCRETE BRIDGE, 20.7 FEET NORTHWEST OF
 JV2377'THE SOUTHEAST END OF THE BRIDGE, SET IN THE FOUNDATION OF THE
 JV2377'BANNISTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2378 ***********************************************************************
 JV2378  DESIGNATION -  C 88 RESET
 JV2378  PID         -  JV2378
 JV2378  STATE/COUNTY-  MD/FREDERICK
 JV2378  COUNTRY     -  US
 JV2378  USGS QUAD   -  FREDERICK (2016)
 JV2378
 JV2378                         *CURRENT SURVEY CONTROL
 JV2378  ______________________________________________________________________
 JV2378* NAD 83(1986) POSITION- 39 25 18.     (N) 077 29 03.     (W)   SCALED
 JV2378* NAVD 88 ORTHO HEIGHT -   173.64  (meters)      569.7   (feet) RESET
 JV2378  ______________________________________________________________________
 JV2378  GEOID HEIGHT    -        -32.841 (meters)                     GEOID18
 JV2378  VERT ORDER      -  THIRD
 JV2378
 JV2378.The horizontal coordinates were scaled from a map and have
 JV2378.an estimated accuracy of +/- 6 seconds.
 JV2378
 JV2378.The orthometric height was computed from unverified reset data.
 JV2378
 JV2378.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2378.GEOID18 height accuracy estimate available here.
 JV2378
 JV2378.Click photographs - Photos may exist for this station.
 JV2378
 JV2378;                    North         East    Units  Estimated Accuracy
 JV2378;SPC MD       -   194,930.      358,310.      MT  (+/- 180 meters Scaled)
 JV2378
 JV2378_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ861665(NAD 83)
 JV2378
 JV2378                          SUPERSEDED SURVEY CONTROL
 JV2378
 JV2378  NGVD 29 (??/??/??)  173.86   (m)          570.4    (f) RESET       3  
 JV2378
 JV2378.Superseded values are not recommended for survey control.
 JV2378
 JV2378.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2378.See file dsdata.pdf to determine how the superseded data were derived.
 JV2378
 JV2378_MARKER: DB = BENCH MARK DISK
 JV2378_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2378_STAMPING: C 88 RESET 1966
 JV2378_MARK LOGO: CGS
 JV2378_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2378+STABILITY: SURFACE MOTION
 JV2378
 JV2378  HISTORY     - Date     Condition        Report By
 JV2378  HISTORY     - 1966     MONUMENTED       MDSRC
 JV2378
 JV2378                          STATION DESCRIPTION
 JV2378
 JV2378'DESCRIBED BY MD STATE ROADS COMM 1966
 JV2378'1.2 MI W FROM FREDERICK.
 JV2378'ABOUT 1.15 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE Y-INTERSECTION
 JV2378'OF U.S. HIGHWAY 40 AND ALTERNATE U.S. HIGHWAY 40 WHICH IS LOCATED
 JV2378'ABOUT 2.5 MILES WEST OF FREDERICK, 300 FEET EAST OF THE JUNCTION
 JV2378'OF CLIFTON ROAD, 100 FEET NORTH OF THE CENTER LINE OF THE MEDIAN
 JV2378'OF ALTERNATE U.S. HIGHWAY 40, AND SET IN THE TOP OF A CONCRETE
 JV2378'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2978 ***********************************************************************
 JV2978  DESIGNATION -  C 89
 JV2978  PID         -  JV2978
 JV2978  STATE/COUNTY-  MD/FREDERICK
 JV2978  COUNTRY     -  US
 JV2978  USGS QUAD   -  MIDDLETOWN (2016)
 JV2978
 JV2978                         *CURRENT SURVEY CONTROL
 JV2978  ______________________________________________________________________
 JV2978* NAD 83(1986) POSITION- 39 29 10.     (N) 077 33 57.     (W)   SCALED
 JV2978* NAVD 88 ORTHO HEIGHT -   154.966 (meters)      508.42  (feet) ADJUSTED
 JV2978  ______________________________________________________________________
 JV2978  GEOID HEIGHT    -        -33.214 (meters)                     GEOID18
 JV2978  DYNAMIC HEIGHT  -        154.880 (meters)      508.14  (feet) COMP
 JV2978  MODELED GRAVITY -    980,069.7   (mgal)                       NAVD 88
 JV2978
 JV2978  VERT ORDER      -  SECOND    CLASS I
 JV2978
 JV2978.The horizontal coordinates were scaled from a map and have
 JV2978.an estimated accuracy of +/- 6 seconds.
 JV2978
 JV2978.The orthometric height was determined by differential leveling and
 JV2978.adjusted by the NATIONAL GEODETIC SURVEY
 JV2978.in June 1991.
 JV2978
 JV2978.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2978.GEOID18 height accuracy estimate available here.
 JV2978
 JV2978.Click photographs - Photos may exist for this station.
 JV2978
 JV2978.The dynamic height is computed by dividing the NAVD 88
 JV2978.geopotential number by the normal gravity value computed on the
 JV2978.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2978.degrees latitude (g = 980.6199 gals.).
 JV2978
 JV2978.The modeled gravity was interpolated from observed gravity values.
 JV2978
 JV2978;                    North         East    Units  Estimated Accuracy
 JV2978;SPC MD       -   202,120.      351,320.      MT  (+/- 180 meters Scaled)
 JV2978
 JV2978_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ793738(NAD 83)
 JV2978
 JV2978                          SUPERSEDED SURVEY CONTROL
 JV2978
 JV2978  NGVD 29 (11/26/84)  155.179  (m)          509.12   (f) ADJUSTED    2 0
 JV2978
 JV2978.Superseded values are not recommended for survey control.
 JV2978
 JV2978.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2978.See file dsdata.pdf to determine how the superseded data were derived.
 JV2978
 JV2978_MARKER: DB = BENCH MARK DISK
 JV2978_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2978_STAMPING: C 89 1942
 JV2978_MARK LOGO: CGS
 JV2978_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2978_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2978+STABILITY: SURFACE MOTION
 JV2978_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2978+SATELLITE: SATELLITE OBSERVATIONS - April 04, 1993
 JV2978
 JV2978  HISTORY     - Date     Condition        Report By
 JV2978  HISTORY     - 1942     MONUMENTED       CGS
 JV2978  HISTORY     - 19930404 GOOD             GREOMA
 JV2978  HISTORY     - 20011121 GOOD             MDSHA
 JV2978
 JV2978                          STATION DESCRIPTION
 JV2978
 JV2978'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2978'1.5 MI S FROM MYERSVILLE.
 JV2978'1.5 MILES SOUTH ALONG STATE HIGHWAY 17 FROM THE POST OFFICE AT
 JV2978'MYERSVILLE, FREDERICK COUNTY, 90 FEET NORTH OF THE NORTH CORNER
 JV2978'OF A TWO-STORY BROWN STUCCO HOUSE, 13 FEET NORTHWEST OF THE
 JV2978'CENTER LINE OF THE DRIVEWAY, AT THE Y-JUNCTION OF A MACADAM ROAD,
 JV2978'36 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, 15.6 FEET
 JV2978'SOUTHWEST OF THE CENTER LINE OF THE RAILROAD TRACK, 7 FEET
 JV2978'SOUTHWEST OF A POLE, AND 2 FEET EAST OF A WHITE WOODEN WITNESS
 JV2978'POST.  A STANDARD DISK, STAMPED C 89 1942 AND SET IN THE TOP
 JV2978'TOP OF A CONCRETE POST.
 JV2978
 JV2978                          STATION RECOVERY (1993)
 JV2978
 JV2978'RECOVERY NOTE BY GREENHORNE-OMARA 1993
 JV2978'RECOVERED IN GOOD CONDITION.
 JV2978
 JV2978                          STATION RECOVERY (2001)
 JV2978
 JV2978'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2978'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7198 ***********************************************************************
 JV7198  DESIGNATION -  C 89 ECC
 JV7198  PID         -  JV7198
 JV7198  STATE/COUNTY-  MD/FREDERICK
 JV7198  COUNTRY     -  US
 JV7198  USGS QUAD   -  MIDDLETOWN (2016)
 JV7198
 JV7198                         *CURRENT SURVEY CONTROL
 JV7198  ______________________________________________________________________
 JV7198* NAD 83(2011) POSITION- 39 29 08.29259(N) 077 33 54.03729(W)   ADJUSTED
 JV7198* NAD 83(2011) ELLIP HT-   127.307 (meters)        (06/27/12)   ADJUSTED
 JV7198* NAD 83(2011) EPOCH   -  2010.00
 JV7198* NAVD 88 ORTHO HEIGHT -   160.50  (meters)      526.6   (feet) LEVELING
 JV7198  ______________________________________________________________________
 JV7198  GEOID HEIGHT    -        -33.210 (meters)                     GEOID18
 JV7198  NAD 83(2011) X  -  1,061,438.622 (meters)                     COMP
 JV7198  NAD 83(2011) Y  - -4,813,681.255 (meters)                     COMP
 JV7198  NAD 83(2011) Z  -  4,034,153.859 (meters)                     COMP
 JV7198  LAPLACE CORR    -          7.70  (seconds)                    DEFLEC18
 JV7198  VERT ORDER      -  THIRD ?
 JV7198
 JV7198  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7198  Standards:
 JV7198         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7198            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7198  -------------------------------------------------------------------
 JV7198  NETWORK    2.16   2.78           0.95   0.79   1.42      0.19541212
 JV7198  -------------------------------------------------------------------
 JV7198  Click here for local accuracies and other accuracy information.
 JV7198
 JV7198.The horizontal coordinates were established by GPS observations
 JV7198.and adjusted by the National Geodetic Survey in June 2012.
 JV7198
 JV7198.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7198.been affixed to the stable North American tectonic plate. See 
 JV7198.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7198
 JV7198.The horizontal coordinates are valid at the epoch date displayed above
 JV7198.which is a decimal equivalence of Year/Month/Day.
 JV7198
 JV7198.The orthometric height was determined by differential leveling.
 JV7198.The vertical network tie was performed by a horz. field party for horz.
 JV7198.obs reductions. Reset procedures were used to establish the elevation.
 JV7198
 JV7198.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7198.GEOID18 height accuracy estimate available here.
 JV7198
 JV7198.Click photographs - Photos may exist for this station.
 JV7198
 JV7198.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7198
 JV7198.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7198
 JV7198.The ellipsoidal height was determined by GPS observations
 JV7198.and is referenced to NAD 83.
 JV7198
 JV7198. The following values were computed from the NAD 83(2011) position.
 JV7198
 JV7198;                    North         East     Units Scale Factor Converg.
 JV7198;SPC MD       -   202,070.655   351,391.524   MT  1.00000643   -0 21 16.6
 JV7198;SPC MD       -   662,960.14  1,152,857.02   sFT  1.00000643   -0 21 16.6
 JV7198;UTM  18      - 4,373,811.521   279,403.301   MT  1.00019918   -1 37 54.1
 JV7198
 JV7198!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7198!SPC MD       -   0.99998003  x   1.00000643  =   0.99998646
 JV7198!UTM  18      -   0.99998003  x   1.00019918  =   1.00017920
 JV7198
 JV7198_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7940373811(NAD 83)
 JV7198
 JV7198                          SUPERSEDED SURVEY CONTROL
 JV7198
 JV7198  NAD 83(2007)-  39 29 08.29271(N)    077 33 54.03794(W) AD(2002.00) 0
 JV7198  ELLIP H (02/10/07)  127.330  (m)                       GP(2002.00)    
 JV7198  ELLIP H (08/30/02)  127.328  (m)                       GP(       ) 4 2
 JV7198  NAD 83(1991)-  39 29 08.29289(N)    077 33 54.03787(W) AD(       ) 1
 JV7198  ELLIP H (02/09/94)  127.264  (m)                       GP(       ) 4 1
 JV7198
 JV7198.Superseded values are not recommended for survey control.
 JV7198
 JV7198.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7198.See file dsdata.pdf to determine how the superseded data were derived.
 JV7198
 JV7198_MARKER: B = BOLT
 JV7198_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV7198_SP_SET: DRIVEN INTO GROUND
 JV7198_MARK LOGO: GREOMA
 JV7198_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7198_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV7198_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7198+SATELLITE: SATELLITE OBSERVATIONS - June 14, 2013
 JV7198
 JV7198  HISTORY     - Date     Condition        Report By
 JV7198  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7198  HISTORY     - 20130614 GOOD             DEWDAV
 JV7198
 JV7198                          STATION DESCRIPTION
 JV7198
 JV7198'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7198'C 89 ECC IS AN IRON ROD (WITH PLASTIC CAP) SET AS AN ECCENTRIC STATION
 JV7198
 JV7198                          STATION RECOVERY (2013)
 JV7198
 JV7198'RECOVERY NOTE BY DEWBERRY DAVIS 2013 (GDS)
 JV7198'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4018 ***********************************************************************
 HV4018  DESIGNATION -  C 9
 HV4018  PID         -  HV4018
 HV4018  STATE/COUNTY-  MD/QUEEN ANNES
 HV4018  COUNTRY     -  US
 HV4018  USGS QUAD   -  RIDGELY (2017)
 HV4018
 HV4018                         *CURRENT SURVEY CONTROL
 HV4018  ______________________________________________________________________
 HV4018* NAD 83(1986) POSITION- 38 55 58.     (N) 075 59 59.     (W)   SCALED
 HV4018* NAVD 88 ORTHO HEIGHT -    20.277 (meters)       66.53  (feet) ADJUSTED
 HV4018  ______________________________________________________________________
 HV4018  GEOID HEIGHT    -        -34.393 (meters)                     GEOID18
 HV4018  DYNAMIC HEIGHT  -         20.266 (meters)       66.49  (feet) COMP
 HV4018  MODELED GRAVITY -    980,057.8   (mgal)                       NAVD 88
 HV4018
 HV4018  VERT ORDER      -  SECOND    CLASS 0
 HV4018
 HV4018.The horizontal coordinates were scaled from a map and have
 HV4018.an estimated accuracy of +/- 6 seconds.
 HV4018
 HV4018.The orthometric height was determined by differential leveling and
 HV4018.adjusted by the NATIONAL GEODETIC SURVEY
 HV4018.in June 1991.
 HV4018
 HV4018.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4018.GEOID18 height accuracy estimate available here.
 HV4018
 HV4018.Click photographs - Photos may exist for this station.
 HV4018
 HV4018.The dynamic height is computed by dividing the NAVD 88
 HV4018.geopotential number by the normal gravity value computed on the
 HV4018.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV4018.degrees latitude (g = 980.6199 gals.).
 HV4018
 HV4018.The modeled gravity was interpolated from observed gravity values.
 HV4018
 HV4018;                    North         East    Units  Estimated Accuracy
 HV4018;SPC MD       -   141,020.      486,730.      MT  (+/- 180 meters Scaled)
 HV4018
 HV4018_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ133097(NAD 83)
 HV4018
 HV4018                          SUPERSEDED SURVEY CONTROL
 HV4018
 HV4018  NGVD 29 (11/26/84)   20.508  (m)           67.28   (f) ADJUSTED    2 0
 HV4018
 HV4018.Superseded values are not recommended for survey control.
 HV4018
 HV4018.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4018.See file dsdata.pdf to determine how the superseded data were derived.
 HV4018
 HV4018_MARKER: DB = BENCH MARK DISK
 HV4018_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4018_STAMPING: C 9 1935
 HV4018_MARK LOGO: CGS
 HV4018_PROJECTION: PROJECTING 15 CENTIMETERS
 HV4018_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4018+STABILITY: SURFACE MOTION
 HV4018
 HV4018  HISTORY     - Date     Condition        Report By
 HV4018  HISTORY     - 1935     MONUMENTED       CGS
 HV4018  HISTORY     - 1942     GOOD             CGS
 HV4018  HISTORY     - 20050319 MARK NOT FOUND   USPSQD
 HV4018
 HV4018                          STATION DESCRIPTION
 HV4018
 HV4018'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV4018'3 MI W FROM QUEEN ANNE.
 HV4018'IN QUEEN ANNES COUNTY, 3.0 MILES WEST ALONG THE BALTIMORE AND
 HV4018'EASTERN RAILROAD FROM THE STATION AT QUEEN ANNE, TALBOT COUNTY,
 HV4018'ABOUT 1200 FEET SOUTH OF A WHITE 2-STORY FRAME HOUSE, AT A
 HV4018'PRIVATE-ROAD CROSSING, 22 FEET SOUTH OF THE SOUTH RAIL, 16 FEET
 HV4018'WEST OF THE CENTERLINE OF THE ROAD, 4 FEET SOUTH OF A TELEPHONE
 HV4018'POLE, AND 3 FEET SOUTHWEST OF THE NORTHEAST CORNER OF A CULTIVATED
 HV4018'FIELD.  A STANDARD DISK, STAMPED C 9 1935 AND SET IN THE TOP OF A
 HV4018'CONCRETE POST PROJECTING 6 INCHES ABOVE GROUND.
 HV4018
 HV4018                          STATION RECOVERY (2005)
 HV4018
 HV4018'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HV4018'REFERENCED RAILROAD DISCONTINUED, RAILS REMOVED.  REFERENCED TELEPHONE
 HV4018'POLE CUT OFF AT GROUND LEVEL AND REPLACED BY UNDERGROUND CABLE.
 HV4018'PROPERTY OWNER, MR. CONNELLY, STATES THAT THE MARK WAS PROBABLY
 HV4018'DESTROYED BY TELEPHONE AND POWER COMPANY TRENCHING EQUIPMENT DURING
 HV4018'CABLE BURIAL. MR. CONNELLY STATES THAT HE REMEMBERS SEEING THE MARK
 HV4018'SOMETIME AGO, BUT NOT SINCE CABLE WORK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2366 ***********************************************************************
 JV2366  DESIGNATION -  C 91
 JV2366  PID         -  JV2366
 JV2366  STATE/COUNTY-  MD/MONTGOMERY
 JV2366  COUNTRY     -  US
 JV2366  USGS QUAD   -  URBANA (2016)
 JV2366
 JV2366                         *CURRENT SURVEY CONTROL
 JV2366  ______________________________________________________________________
 JV2366* NAD 83(1986) POSITION- 39 15 29.     (N) 077 20 41.     (W)   SCALED
 JV2366* NAVD 88 ORTHO HEIGHT -   167.625 (meters)      549.95  (feet) ADJUSTED
 JV2366  ______________________________________________________________________
 JV2366  GEOID HEIGHT    -        -32.135 (meters)                     GEOID18
 JV2366  DYNAMIC HEIGHT  -        167.535 (meters)      549.65  (feet) COMP
 JV2366  MODELED GRAVITY -    980,087.7   (mgal)                       NAVD 88
 JV2366
 JV2366  VERT ORDER      -  SECOND    CLASS 0
 JV2366
 JV2366.The horizontal coordinates were scaled from a map and have
 JV2366.an estimated accuracy of +/- 6 seconds.
 JV2366
 JV2366.The orthometric height was determined by differential leveling and
 JV2366.adjusted by the NATIONAL GEODETIC SURVEY
 JV2366.in June 1991.
 JV2366
 JV2366.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2366.GEOID18 height accuracy estimate available here.
 JV2366
 JV2366.Click photographs - Photos may exist for this station.
 JV2366
 JV2366.The dynamic height is computed by dividing the NAVD 88
 JV2366.geopotential number by the normal gravity value computed on the
 JV2366.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2366.degrees latitude (g = 980.6199 gals.).
 JV2366
 JV2366.The modeled gravity was interpolated from observed gravity values.
 JV2366
 JV2366;                    North         East    Units  Estimated Accuracy
 JV2366;SPC MD       -   176,710.      370,250.      MT  (+/- 180 meters Scaled)
 JV2366
 JV2366_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ976480(NAD 83)
 JV2366
 JV2366                          SUPERSEDED SURVEY CONTROL
 JV2366
 JV2366  NGVD 29 (11/26/84)  167.820  (m)          550.59   (f) ADJUSTED    2 0
 JV2366
 JV2366.Superseded values are not recommended for survey control.
 JV2366
 JV2366.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2366.See file dsdata.pdf to determine how the superseded data were derived.
 JV2366
 JV2366_MARKER: DB = BENCH MARK DISK
 JV2366_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2366_STAMPING: C 91 1942
 JV2366_MARK LOGO: CGS
 JV2366_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2366+STABILITY: SURFACE MOTION
 JV2366
 JV2366  HISTORY     - Date     Condition        Report By
 JV2366  HISTORY     - 1942     MONUMENTED       CGS
 JV2366
 JV2366                          STATION DESCRIPTION
 JV2366
 JV2366'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2366'0.8 MI NE FROM COMUS.
 JV2366'0.8 MILE NORTHEAST ALONG THE HYATTSTOWN ROAD FROM THE POST OFFICE
 JV2366'AT COMUS, MONTGOMERY COUNTY, AT THE JUNCTION OF A DRIVEWAY
 JV2366'LEADING EAST, 27.5 FEET SOUTH OF THE CENTER LINE OF THE DRIVEWAY,
 JV2366'22.2 FEET EAST OF THE CENTER LINE OF THE MAIN ROAD, 2 FEET EAST
 JV2366'OF POLE 69, 1 FOOT WEST OF A NORTH-AND-SOUTH FENCE, AND NEAR A
 JV2366'WHITE WOODEN WITNESS POST.  A STANDARD DISK, STAMPED C 91 1942 AND
 JV2366'SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0777 ***********************************************************************
 JV0777  DESIGNATION -  C 92
 JV0777  PID         -  JV0777
 JV0777  STATE/COUNTY-  MD/BALTIMORE
 JV0777  COUNTRY     -  US
 JV0777  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0777
 JV0777                         *CURRENT SURVEY CONTROL
 JV0777  ______________________________________________________________________
 JV0777* NAD 83(1986) POSITION- 39 22 00.     (N) 076 45 20.     (W)   SCALED
 JV0777* NAVD 88 ORTHO HEIGHT -   154.448 (meters)      506.72  (feet) ADJUSTED
 JV0777  ______________________________________________________________________
 JV0777  GEOID HEIGHT    -        -32.218 (meters)                     GEOID18
 JV0777  DYNAMIC HEIGHT  -        154.368 (meters)      506.46  (feet) COMP
 JV0777  MODELED GRAVITY -    980,103.5   (mgal)                       NAVD 88
 JV0777
 JV0777  VERT ORDER      -  SECOND    CLASS 0
 JV0777
 JV0777.The horizontal coordinates were scaled from a map and have
 JV0777.an estimated accuracy of +/- 6 seconds.
 JV0777
 JV0777.The orthometric height was determined by differential leveling and
 JV0777.adjusted by the NATIONAL GEODETIC SURVEY
 JV0777.in June 1991.
 JV0777
 JV0777.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0777.GEOID18 height accuracy estimate available here.
 JV0777
 JV0777.Click photographs - Photos may exist for this station.
 JV0777
 JV0777.The dynamic height is computed by dividing the NAVD 88
 JV0777.geopotential number by the normal gravity value computed on the
 JV0777.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0777.degrees latitude (g = 980.6199 gals.).
 JV0777
 JV0777.The modeled gravity was interpolated from observed gravity values.
 JV0777
 JV0777;                    North         East    Units  Estimated Accuracy
 JV0777;SPC MD       -   188,740.      421,070.      MT  (+/- 180 meters Scaled)
 JV0777
 JV0777_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ487589(NAD 83)
 JV0777
 JV0777                          SUPERSEDED SURVEY CONTROL
 JV0777
 JV0777  NGVD 29 (11/26/84)  154.670  (m)          507.45   (f) ADJUSTED    2 0
 JV0777
 JV0777.Superseded values are not recommended for survey control.
 JV0777
 JV0777.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0777.See file dsdata.pdf to determine how the superseded data were derived.
 JV0777
 JV0777_MARKER: DB = BENCH MARK DISK
 JV0777_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0777_STAMPING: C 92 1942
 JV0777_MARK LOGO: CGS
 JV0777_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0777+STABILITY: SURFACE MOTION
 JV0777
 JV0777  HISTORY     - Date     Condition        Report By
 JV0777  HISTORY     - 1942     MONUMENTED       CGS
 JV0777
 JV0777                          STATION DESCRIPTION
 JV0777
 JV0777'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0777'1 MI SW FROM ROSLYN.
 JV0777'THIS MARK IS ABOUT 1.0 MILE SOUTHWEST OF THE CROSSROADS AT
 JV0777'ROSLYN, AND ABOUT 1.7 MILES SOUTHWEST OF HIGHWAY NUMBER 140
 JV0777'AT PIKESVILLE, ALONG THE ROAD TO GRANITE, SET ON THE SOUTH SIDE
 JV0777'OF THE HIGHWAY, 4.8 FEET EAST OF A FENCE RUNNING NORTH-SOUTH,
 JV0777'22.4 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, 122.0 FEET
 JV0777'NORTHEAST OF THE NORTHEAST CORNER OF A 2 STORY WHITE HOUSE,
 JV0777'31.5 FEET NORTHWEST OF A 30-INCH OAK TREE, NEAR A WHITE REFERENCE
 JV0777'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0778 ***********************************************************************
 JV0778  DESIGNATION -  C 92 RESET
 JV0778  PID         -  JV0778
 JV0778  STATE/COUNTY-  MD/BALTIMORE
 JV0778  COUNTRY     -  US
 JV0778  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0778
 JV0778                         *CURRENT SURVEY CONTROL
 JV0778  ______________________________________________________________________
 JV0778* NAD 83(1986) POSITION- 39 22 00.     (N) 076 45 20.     (W)   SCALED
 JV0778* NAVD 88 ORTHO HEIGHT -   153.73  (meters)      504.4   (feet) RESET
 JV0778  ______________________________________________________________________
 JV0778  GEOID HEIGHT    -        -32.218 (meters)                     GEOID18
 JV0778  VERT ORDER      -  THIRD
 JV0778
 JV0778.The horizontal coordinates were scaled from a map and have
 JV0778.an estimated accuracy of +/- 6 seconds.
 JV0778
 JV0778.The orthometric height was computed from unverified reset data.
 JV0778
 JV0778.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0778.GEOID18 height accuracy estimate available here.
 JV0778
 JV0778.Click photographs - Photos may exist for this station.
 JV0778
 JV0778;                    North         East    Units  Estimated Accuracy
 JV0778;SPC MD       -   188,740.      421,070.      MT  (+/- 180 meters Scaled)
 JV0778
 JV0778_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ487589(NAD 83)
 JV0778
 JV0778                          SUPERSEDED SURVEY CONTROL
 JV0778
 JV0778  NGVD 29 (??/??/??)  153.95   (m)          505.1    (f) RESET       3  
 JV0778
 JV0778.Superseded values are not recommended for survey control.
 JV0778
 JV0778.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0778.See file dsdata.pdf to determine how the superseded data were derived.
 JV0778
 JV0778_MARKER: DB = BENCH MARK DISK
 JV0778_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0778_STAMPING: C 92 RESET 1967
 JV0778_MARK LOGO: CGS
 JV0778_PROJECTION: FLUSH
 JV0778_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0778+STABILITY: SURFACE MOTION
 JV0778_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0778+SATELLITE: SATELLITE OBSERVATIONS - June 01, 2010
 JV0778
 JV0778  HISTORY     - Date     Condition        Report By
 JV0778  HISTORY     - 1967     MONUMENTED       CGS
 JV0778  HISTORY     - 20100601 GOOD             JARICE
 JV0778
 JV0778                          STATION DESCRIPTION
 JV0778
 JV0778'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JV0778'1.7 MI SW FROM PIKESVILLE.
 JV0778'1.7 MILES SOUTHWEST ALONG STATE HIGHWAY 125, OLD COURT ROAD,
 JV0778'FROM THE JUNCTION OF U.S. HIGHWAY 40 AT PIKESVILLE, 45 FEET
 JV0778'SOUTH OF THE CENTERLINE OF OLD COURT ROAD, 22 FEET WEST OF THE
 JV0778'WEST OF TWO 4 FOOT OAK TREES, 19 FEET EAST OF THE CENTERLINE
 JV0778'OF EAST DRIVEWAY TO COLONIAL BAPTIST CHURCH, 16.5 FEET SOUTH
 JV0778'OF UTILITY POLE, 17 FEET SOUTH OF SOUTH EDGE OF SIDEWALK AND
 JV0778'IN THE EAST EDGE OF HEDGE.  MARK IS FLUSH WITH THE GROUND AND
 JV0778'IS ABOUT 10 INCHES SQUARE.
 JV0778
 JV0778                          STATION RECOVERY (2010)
 JV0778
 JV0778'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV0778'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1877 ***********************************************************************
 JV1877  DESIGNATION -  C 93
 JV1877  PID         -  JV1877
 JV1877  STATE/COUNTY-  MD/FREDERICK
 JV1877  COUNTRY     -  US
 JV1877  USGS QUAD   -  UNION BRIDGE (2016)
 JV1877
 JV1877                         *CURRENT SURVEY CONTROL
 JV1877  ______________________________________________________________________
 JV1877* NAD 83(1986) POSITION- 39 30 57.     (N) 077 10 28.     (W)   SCALED
 JV1877* NAVD 88 ORTHO HEIGHT -   138.744 (meters)      455.20  (feet) ADJUSTED
 JV1877  ______________________________________________________________________
 JV1877  GEOID HEIGHT    -        -32.411 (meters)                     GEOID18
 JV1877  DYNAMIC HEIGHT  -        138.671 (meters)      454.96  (feet) COMP
 JV1877  MODELED GRAVITY -    980,099.3   (mgal)                       NAVD 88
 JV1877
 JV1877  VERT ORDER      -  SECOND    CLASS 0
 JV1877
 JV1877.The horizontal coordinates were scaled from a map and have
 JV1877.an estimated accuracy of +/- 6 seconds.
 JV1877
 JV1877.The orthometric height was determined by differential leveling and
 JV1877.adjusted by the NATIONAL GEODETIC SURVEY
 JV1877.in June 1991.
 JV1877
 JV1877.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1877.GEOID18 height accuracy estimate available here.
 JV1877
 JV1877.Click photographs - Photos may exist for this station.
 JV1877
 JV1877.The dynamic height is computed by dividing the NAVD 88
 JV1877.geopotential number by the normal gravity value computed on the
 JV1877.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1877.degrees latitude (g = 980.6199 gals.).
 JV1877
 JV1877.The modeled gravity was interpolated from observed gravity values.
 JV1877
 JV1877;                    North         East    Units  Estimated Accuracy
 JV1877;SPC MD       -   205,290.      385,000.      MT  (+/- 180 meters Scaled)
 JV1877
 JV1877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ130762(NAD 83)
 JV1877
 JV1877                          SUPERSEDED SURVEY CONTROL
 JV1877
 JV1877  NGVD 29 (11/26/84)  138.951  (m)          455.88   (f) ADJUSTED    2 0
 JV1877
 JV1877.Superseded values are not recommended for survey control.
 JV1877
 JV1877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1877.See file dsdata.pdf to determine how the superseded data were derived.
 JV1877
 JV1877_MARKER: DB = BENCH MARK DISK
 JV1877_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1877_SP_SET: BRIDGE
 JV1877_STAMPING: C 93 1942
 JV1877_MARK LOGO: CGS
 JV1877_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1877
 JV1877  HISTORY     - Date     Condition        Report By
 JV1877  HISTORY     - 1942     MONUMENTED       CGS
 JV1877
 JV1877                          STATION DESCRIPTION
 JV1877
 JV1877'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1877'3 MI N FROM UNIONVILLE.
 JV1877'3.0 MILES NORTH ALONG THE UNION BRIDGE ROAD FROM THE COMMUNITY
 JV1877'HALL AT UNIONVILLE, FREDERICK COUNTY, AT A 15-FOOT BRIDGE, IN
 JV1877'THE TOP OF THE SOUTH END OF THE EAST SIDE OF THE DECK, 12 FEET
 JV1877'EAST OF THE CENTER LINE OF THE HIGHWAY, AND 6 INCHES SOUTH OF
 JV1877'THE SOUTH END OF THE GURADRAIL.  A STANDARD DISK, STAMPED C 93 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2847 ***********************************************************************
 JV2847  DESIGNATION -  C 94
 JV2847  PID         -  JV2847
 JV2847  STATE/COUNTY-  MD/MONTGOMERY
 JV2847  COUNTRY     -  US
 JV2847  USGS QUAD   -  ROCKVILLE (2016)
 JV2847
 JV2847                         *CURRENT SURVEY CONTROL
 JV2847  ______________________________________________________________________
 JV2847* NAD 83(1986) POSITION- 39 03 18.     (N) 077 10 52.     (W)   SCALED
 JV2847* NAVD 88 ORTHO HEIGHT -   131.062 (meters)      429.99  (feet) ADJUSTED
 JV2847  ______________________________________________________________________
 JV2847  GEOID HEIGHT    -        -31.712 (meters)                     GEOID18
 JV2847  DYNAMIC HEIGHT  -        130.994 (meters)      429.77  (feet) COMP
 JV2847  MODELED GRAVITY -    980,106.6   (mgal)                       NAVD 88
 JV2847
 JV2847  VERT ORDER      -  FIRST     CLASS II
 JV2847
 JV2847.The horizontal coordinates were scaled from a map and have
 JV2847.an estimated accuracy of +/- 6 seconds.
 JV2847
 JV2847.The orthometric height was determined by differential leveling and
 JV2847.adjusted by the NATIONAL GEODETIC SURVEY
 JV2847.in June 1991.
 JV2847
 JV2847.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2847.GEOID18 height accuracy estimate available here.
 JV2847
 JV2847.Click photographs - Photos may exist for this station.
 JV2847
 JV2847.The dynamic height is computed by dividing the NAVD 88
 JV2847.geopotential number by the normal gravity value computed on the
 JV2847.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2847.degrees latitude (g = 980.6199 gals.).
 JV2847
 JV2847.The modeled gravity was interpolated from observed gravity values.
 JV2847
 JV2847;                    North         East    Units  Estimated Accuracy
 JV2847;SPC MD       -   154,130.      384,320.      MT  (+/- 180 meters Scaled)
 JV2847
 JV2847_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ112251(NAD 83)
 JV2847
 JV2847                          SUPERSEDED SURVEY CONTROL
 JV2847
 JV2847  NGVD 29 (11/26/84)  131.287  (m)          430.73   (f) ADJUSTED    1 2
 JV2847
 JV2847.Superseded values are not recommended for survey control.
 JV2847
 JV2847.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2847.See file dsdata.pdf to determine how the superseded data were derived.
 JV2847
 JV2847_MARKER: DB = BENCH MARK DISK
 JV2847_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2847_SP_SET: CULVERT
 JV2847_STAMPING: C 94 1944
 JV2847_MARK LOGO: CGS
 JV2847_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2847
 JV2847  HISTORY     - Date     Condition        Report By
 JV2847  HISTORY     - 1944     MONUMENTED       CGS
 JV2847  HISTORY     - 1965     GOOD             WSSC
 JV2847  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 JV2847
 JV2847                          STATION DESCRIPTION
 JV2847
 JV2847'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2847'2.4 MI SW FROM ROCKVILLE.
 JV2847'ABOUT 2.4 MILES SOUTHWEST ALONG STATE HIGHWAY 189 FROM ITS
 JV2847'JUNCTION WITH STATE HIGHWAY 28 AT ROCKVILLE, MONTGOMERY COUNTY,
 JV2847'40 FEET SOUTHWEST OF POWER-TRANSMISSION LINE POLE PEP 620168, AT
 JV2847'A CONCRETE CULVERT IN THE TOP OF THE SOUTHEAST HEAD WALL, 14
 JV2847'FEET SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT LEVEL
 JV2847'WITH THE HIGHWAY.
 JV2847
 JV2847                          STATION RECOVERY (2000)
 JV2847
 JV2847'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 JV2847'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0146 ***********************************************************************
 JV0146  DESIGNATION -  C 96
 JV0146  PID         -  JV0146
 JV0146  STATE/COUNTY-  MD/HARFORD
 JV0146  COUNTRY     -  US
 JV0146  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0146
 JV0146                         *CURRENT SURVEY CONTROL
 JV0146  ______________________________________________________________________
 JV0146* NAD 83(1986) POSITION- 39 33 47.     (N) 076 07 14.     (W)   SCALED
 JV0146* NAVD 88 ORTHO HEIGHT -    97.048 (meters)      318.40  (feet) ADJUSTED
 JV0146  ______________________________________________________________________
 JV0146  GEOID HEIGHT    -        -33.064 (meters)                     GEOID18
 JV0146  DYNAMIC HEIGHT  -         97.000 (meters)      318.24  (feet) COMP
 JV0146  MODELED GRAVITY -    980,130.4   (mgal)                       NAVD 88
 JV0146
 JV0146  VERT ORDER      -  FIRST     CLASS II
 JV0146
 JV0146.The horizontal coordinates were scaled from a map and have
 JV0146.an estimated accuracy of +/- 6 seconds.
 JV0146
 JV0146.The orthometric height was determined by differential leveling and
 JV0146.adjusted by the NATIONAL GEODETIC SURVEY
 JV0146.in June 1991.
 JV0146
 JV0146.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0146.GEOID18 height accuracy estimate available here.
 JV0146
 JV0146.Click photographs - Photos may exist for this station.
 JV0146
 JV0146.The dynamic height is computed by dividing the NAVD 88
 JV0146.geopotential number by the normal gravity value computed on the
 JV0146.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0146.degrees latitude (g = 980.6199 gals.).
 JV0146
 JV0146.The modeled gravity was interpolated from observed gravity values.
 JV0146
 JV0146;                    North         East    Units  Estimated Accuracy
 JV0146;SPC MD       -   210,880.      475,580.      MT  (+/- 180 meters Scaled)
 JV0146
 JV0146_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ037798(NAD 83)
 JV0146
 JV0146                          SUPERSEDED SURVEY CONTROL
 JV0146
 JV0146  NGVD 29 (11/26/84)   97.319  (m)          319.29   (f) ADJUSTED    1 2
 JV0146
 JV0146.Superseded values are not recommended for survey control.
 JV0146
 JV0146.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0146.See file dsdata.pdf to determine how the superseded data were derived.
 JV0146
 JV0146_MARKER: DB = BENCH MARK DISK
 JV0146_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0146_STAMPING: C 96 1959
 JV0146_MARK LOGO: CGS
 JV0146_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0146_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0146+STABILITY: SURFACE MOTION
 JV0146_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0146+SATELLITE: SATELLITE OBSERVATIONS - October 24, 1989
 JV0146
 JV0146  HISTORY     - Date     Condition        Report By
 JV0146  HISTORY     - 1959     MONUMENTED       CGS
 JV0146  HISTORY     - 19891024 GOOD             NGS
 JV0146  HISTORY     - 19910904 GOOD             MDSHA
 JV0146
 JV0146                          STATION DESCRIPTION
 JV0146
 JV0146'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0146'1.4 MI NW FROM HAVRE DE GRACE.
 JV0146'ABOUT 1.4 MILES NORTHWEST ALONG STATE HIGHWAY 155 FROM ITS
 JV0146'INTERSECTION WITH U.S. HIGHWAY 40 AT HAVRE DE GRACE, ABOUT 0.1
 JV0146'MILE WEST OF THE WASA RADIO TRANSMITTING BUILDING, NEAR THE
 JV0146'T JUNCTION OF A GRAVELED ROAD LEADING NORTH, 19 FEET NORTH OF
 JV0146'THE CENTER LINE OF THE HIGHWAY, 68 FEET WEST OF THE CENTER LINE
 JV0146'OF THE GRAVEL ROAD, 1 FOOT NORTH OF A METAL WITNESS POST, ABOUT
 JV0146'3 FEET ABOVE THE LEVEL OF THE HIGHWAY AND SET IN THE TOP OF A
 JV0146'CONCRETE POST PROJECTING 4 INCHES ABOVE THE GROUND.
 JV0146
 JV0146                          STATION RECOVERY (1989)
 JV0146
 JV0146'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0146'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  2.3 KM
 JV0146'(1.45 MI) NORTHWESTERLY ALONG STATE HIGHWAY 155 FROM THE JUNCTION OF
 JV0146'U.S. HIGHWAY 40 IN HAVRE DE GRACE, 0.2 KM (0.10 MI) WEST OF RADIO
 JV0146'STATION WASA, 37.2 M (122.0 FT) NORTH OF THE CENTERLINE OF THE
 JV0146'HIGHWAY, 21.0 M (68.9 FT) EAST OF A UTILITY POLE, 9.0 M (29.5 FT)
 JV0146'WEST OF THE CENTER OF A ROAD LEADING NORTH, 1.8 M (5.9 FT) BELOW THE
 JV0146'LEVEL OF THE HIGHWAY, 0.3 M (1.0 FT) SOUTH OF A WITNESS POST, AND IN
 JV0146'A CONCRETE MONUMENT THAT PROJECTS 0.2 M (0.7 FT) ABOVE THE GROUND
 JV0146'SURFACE.
 JV0146
 JV0146                          STATION RECOVERY (1991)
 JV0146
 JV0146'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV0146'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1271 ***********************************************************************
 JV1271  DESIGNATION -  C 97 RESET
 JV1271  PID         -  JV1271
 JV1271  STATE/COUNTY-  MD/BALTIMORE
 JV1271  COUNTRY     -  US
 JV1271  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1271
 JV1271                         *CURRENT SURVEY CONTROL
 JV1271  ______________________________________________________________________
 JV1271* NAD 83(1986) POSITION- 39 28 04.     (N) 076 39 44.     (W)   SCALED
 JV1271* NAVD 88 ORTHO HEIGHT -   107.12  (meters)      351.4   (feet) RESET
 JV1271  ______________________________________________________________________
 JV1271  GEOID HEIGHT    -        -32.359 (meters)                     GEOID18
 JV1271  VERT ORDER      -  THIRD
 JV1271
 JV1271.The horizontal coordinates were scaled from a map and have
 JV1271.an estimated accuracy of +/- 6 seconds.
 JV1271
 JV1271.The orthometric height was computed from unverified reset data.
 JV1271
 JV1271.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1271.GEOID18 height accuracy estimate available here.
 JV1271
 JV1271.Click photographs - Photos may exist for this station.
 JV1271
 JV1271;                    North         East    Units  Estimated Accuracy
 JV1271;SPC MD       -   199,990.      429,070.      MT  (+/- 180 meters Scaled)
 JV1271
 JV1271_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ570700(NAD 83)
 JV1271
 JV1271                          SUPERSEDED SURVEY CONTROL
 JV1271
 JV1271  NGVD 29 (??/??/??)  107.33   (m)          352.1    (f) RESET       3  
 JV1271
 JV1271.Superseded values are not recommended for survey control.
 JV1271
 JV1271.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1271.See file dsdata.pdf to determine how the superseded data were derived.
 JV1271
 JV1271_MARKER: DV = VERTICAL CONTROL DISK
 JV1271_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1271_STAMPING: C 97 RESET 1973
 JV1271_MARK LOGO: NGS
 JV1271_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1271+STABILITY: SURFACE MOTION
 JV1271
 JV1271  HISTORY     - Date     Condition        Report By
 JV1271  HISTORY     - 1973     MONUMENTED       NGS
 JV1271
 JV1271                          STATION DESCRIPTION
 JV1271
 JV1271'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973
 JV1271'2 MI SW FROM COCKYSVILLE.
 JV1271'THE MARK IS LOCATED IN THE MEDIUM OF INTERSTATE HIGHWAY 83 ABOUT
 JV1271'10 MILES NORTH OF THE CENTER OF BALTIMORE AND 2 MILES SOUTHWEST
 JV1271'OF COCKEYSVILLE.  THE MARK IS A STANDARD DISK STAMPED C 97 RESET
 JV1271'1973, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 JV1271'IS FLUSH WITH THE SURFACE.  IT IS 25.5 FEET EAST OF THE EAST EDGE
 JV1271'OF THE PAVEMENT OF THE SOUTH BOUND LANE OF INTERSTATE HIGHWAY 83,
 JV1271'24.5 FEET WEST OF THE WEST EDGE OF THE PAVEMENT OF THE NORTH
 JV1271'BOUND LANE OF THE HIGHWAY, 5 FEET EAST OF A 6-INCH PINE TREE AND
 JV1271'1.5 FEET NORTHWEST OF A WITNESS POST.  TO REACH FROM THE INTERSECTION
 JV1271'OF INTERSTATE HIGHWAYS 695 AND 83 IN THE NORTH PART OF BALTIMORE,
 JV1271'GO NORTHERLY ON INTERSTATE HIGHWAY 83 FOR 4.05 MILES TO THE MARK
 JV1271'ON THE LEFT.  THIS IS 0.9 MILE AFTER PASSING A POINT WHERE TWO
 JV1271'HIGHLINES CROSSES THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0862 ***********************************************************************
 JV0862  DESIGNATION -  C 98
 JV0862  PID         -  JV0862
 JV0862  STATE/COUNTY-  MD/BALTIMORE
 JV0862  COUNTRY     -  US
 JV0862  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0862
 JV0862                         *CURRENT SURVEY CONTROL
 JV0862  ______________________________________________________________________
 JV0862* NAD 83(1986) POSITION- 39 15 20.     (N) 076 41 25.     (W)   SCALED
 JV0862* NAVD 88 ORTHO HEIGHT -    46.261 (meters)      151.77  (feet) ADJUSTED
 JV0862  ______________________________________________________________________
 JV0862  GEOID HEIGHT    -        -32.542 (meters)                     GEOID18
 JV0862  DYNAMIC HEIGHT  -         46.237 (meters)      151.70  (feet) COMP
 JV0862  MODELED GRAVITY -    980,100.7   (mgal)                       NAVD 88
 JV0862
 JV0862  VERT ORDER      -  SECOND    CLASS 0
 JV0862
 JV0862.The horizontal coordinates were scaled from a map and have
 JV0862.an estimated accuracy of +/- 6 seconds.
 JV0862
 JV0862.The orthometric height was determined by differential leveling and
 JV0862.adjusted by the NATIONAL GEODETIC SURVEY
 JV0862.in June 1991.
 JV0862
 JV0862.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0862.GEOID18 height accuracy estimate available here.
 JV0862
 JV0862.Click photographs - Photos may exist for this station.
 JV0862
 JV0862.The dynamic height is computed by dividing the NAVD 88
 JV0862.geopotential number by the normal gravity value computed on the
 JV0862.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0862.degrees latitude (g = 980.6199 gals.).
 JV0862
 JV0862.The modeled gravity was interpolated from observed gravity values.
 JV0862
 JV0862;                    North         East    Units  Estimated Accuracy
 JV0862;SPC MD       -   176,420.      426,730.      MT  (+/- 180 meters Scaled)
 JV0862
 JV0862_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ541464(NAD 83)
 JV0862
 JV0862                          SUPERSEDED SURVEY CONTROL
 JV0862
 JV0862  NGVD 29 (11/26/84)   46.477  (m)          152.48   (f) ADJUSTED    2 0
 JV0862
 JV0862.Superseded values are not recommended for survey control.
 JV0862
 JV0862.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0862.See file dsdata.pdf to determine how the superseded data were derived.
 JV0862
 JV0862_MARKER: DB = BENCH MARK DISK
 JV0862_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0862_SP_SET: OVERPASS WALKWAY
 JV0862_STAMPING: C 98 1960
 JV0862_MARK LOGO: CGS
 JV0862_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0862
 JV0862  HISTORY     - Date     Condition        Report By
 JV0862  HISTORY     - 1960     MONUMENTED       CGS
 JV0862  HISTORY     - 20031225 MARK NOT FOUND   USPSQD
 JV0862
 JV0862                          STATION DESCRIPTION
 JV0862
 JV0862'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0862'2.9 MI SE FROM CATONSVILLE.
 JV0862'0.6 MILE EAST ALONG FREDERICK ROAD FROM THE POST OFFICE AT
 JV0862'CATONSVILLE, THENCE ABOUT 2.3 MILES SOUTHEAST ALONG BALTIMORE
 JV0862'COUNTY BELTWAY (INTERSTATE HIGHWAY 695), IN TOP OF WALKWAY AT
 JV0862'SOUTHEAST END OF BELTWAY OVERPASS OVER THE PENNSYLVANIA RAILROAD
 JV0862'AND U.S. HIGHWAY 1, 15 FEET NORTHEAST OF CENTER LINE OF NORTHWEST
 JV0862'BOUND LANE OF HIGHWAY, 9 FEET NORTHWEST OF SOUTHEAST END OF
 JV0862'WALKWAY AND ABOUT 1 FOOT ABOVE LEVEL OF HIGHWAY.
 JV0862
 JV0862                          STATION RECOVERY (2003)
 JV0862
 JV0862'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV0862'NOT FOUND.  MARK WAS PROBABLY DESTROYED DURING BRIDGE RENOVATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0863 ***********************************************************************
 JV0863  DESIGNATION -  C 98 RESET
 JV0863  PID         -  JV0863
 JV0863  STATE/COUNTY-  MD/BALTIMORE
 JV0863  COUNTRY     -  US
 JV0863  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0863
 JV0863                         *CURRENT SURVEY CONTROL
 JV0863  ______________________________________________________________________
 JV0863* NAD 83(1986) POSITION- 39 15 20.     (N) 076 41 25.     (W)   SCALED
 JV0863* NAVD 88 ORTHO HEIGHT -    45.48  (meters)      149.2   (feet) RESET
 JV0863  ______________________________________________________________________
 JV0863  GEOID HEIGHT    -        -32.542 (meters)                     GEOID18
 JV0863  VERT ORDER      -  THIRD
 JV0863
 JV0863.The horizontal coordinates were scaled from a map and have
 JV0863.an estimated accuracy of +/- 6 seconds.
 JV0863
 JV0863.The orthometric height was computed from unverified reset data.
 JV0863
 JV0863.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0863.GEOID18 height accuracy estimate available here.
 JV0863
 JV0863.Click photographs - Photos may exist for this station.
 JV0863
 JV0863;                    North         East    Units  Estimated Accuracy
 JV0863;SPC MD       -   176,420.      426,730.      MT  (+/- 180 meters Scaled)
 JV0863
 JV0863_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ541464(NAD 83)
 JV0863
 JV0863                          SUPERSEDED SURVEY CONTROL
 JV0863
 JV0863  NGVD 29 (??/??/??)   45.70   (m)          149.9    (f) RESET       3  
 JV0863
 JV0863.Superseded values are not recommended for survey control.
 JV0863
 JV0863.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0863.See file dsdata.pdf to determine how the superseded data were derived.
 JV0863
 JV0863_MARKER: DB = BENCH MARK DISK
 JV0863_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0863_SP_SET: OVERPASS INLET
 JV0863_STAMPING: C 98 RESET 1970
 JV0863_MARK LOGO: CGS
 JV0863_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0863
 JV0863  HISTORY     - Date     Condition        Report By
 JV0863  HISTORY     - 1970     MONUMENTED       NGS
 JV0863  HISTORY     - 20031225 MARK NOT FOUND   USPSQD
 JV0863
 JV0863                          STATION DESCRIPTION
 JV0863
 JV0863'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970
 JV0863'2.9 MI SE FROM CANTONSVILLE.
 JV0863'ABOUT 0.6 MILES EAST ALONG FREDERICK ROAD FROM THE POST OFFICE
 JV0863'AT CANTONSVILLE, THENCE 2.3 MILES SOUTHEAST ALONG THE BALTIMORE
 JV0863'BELTWAY (I-695), SET FLUSH IN HEADWALL OF CONCRETE INLET AT
 JV0863'SOUTHWEST END OF BELTWAY OVERPASS OVER PENNSYLVANIA RAILROAD AND
 JV0863'U.S. HIGHWAY 1, 18.0 FEET SOUTHWEST OF EDGE OF SOUTHEAST BOUND
 JV0863'LANE AND 24.5 FEET SOUTH OF BOLT IN SOUTHWEST END OF BRIDGE.  THE
 JV0863'DISK IS STAMPED C 98 RESET 1970.
 JV0863
 JV0863                          STATION RECOVERY (2003)
 JV0863
 JV0863'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV0863'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0217 ***********************************************************************
 JV0217  DESIGNATION -  C 99
 JV0217  PID         -  JV0217
 JV0217  STATE/COUNTY-  MD/HARFORD
 JV0217  COUNTRY     -  US
 JV0217  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0217
 JV0217                         *CURRENT SURVEY CONTROL
 JV0217  ______________________________________________________________________
 JV0217* NAD 83(1986) POSITION- 39 35 29.     (N) 076 26 02.     (W)   SCALED
 JV0217* NAVD 88 ORTHO HEIGHT -   180.277 (meters)      591.46  (feet) ADJUSTED
 JV0217  ______________________________________________________________________
 JV0217  GEOID HEIGHT    -        -32.597 (meters)                     GEOID18
 JV0217  DYNAMIC HEIGHT  -        180.185 (meters)      591.16  (feet) COMP
 JV0217  MODELED GRAVITY -    980,109.3   (mgal)                       NAVD 88
 JV0217
 JV0217  VERT ORDER      -  SECOND    CLASS 0
 JV0217
 JV0217.The horizontal coordinates were scaled from a map and have
 JV0217.an estimated accuracy of +/- 6 seconds.
 JV0217
 JV0217.The orthometric height was determined by differential leveling and
 JV0217.adjusted by the NATIONAL GEODETIC SURVEY
 JV0217.in June 1991.
 JV0217
 JV0217.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0217.GEOID18 height accuracy estimate available here.
 JV0217
 JV0217.Click photographs - Photos may exist for this station.
 JV0217
 JV0217.The dynamic height is computed by dividing the NAVD 88
 JV0217.geopotential number by the normal gravity value computed on the
 JV0217.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0217.degrees latitude (g = 980.6199 gals.).
 JV0217
 JV0217.The modeled gravity was interpolated from observed gravity values.
 JV0217
 JV0217;                    North         East    Units  Estimated Accuracy
 JV0217;SPC MD       -   213,810.      448,630.      MT  (+/- 180 meters Scaled)
 JV0217
 JV0217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ768833(NAD 83)
 JV0217
 JV0217                          SUPERSEDED SURVEY CONTROL
 JV0217
 JV0217  NGVD 29 (11/26/84)  180.519  (m)          592.25   (f) ADJUSTED    2 0
 JV0217
 JV0217.Superseded values are not recommended for survey control.
 JV0217
 JV0217.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0217.See file dsdata.pdf to determine how the superseded data were derived.
 JV0217
 JV0217_MARKER: DB = BENCH MARK DISK
 JV0217_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0217_STAMPING: C 99 1960
 JV0217_MARK LOGO: CGS
 JV0217_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0217+STABILITY: SURFACE MOTION
 JV0217_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0217+SATELLITE: SATELLITE OBSERVATIONS - October 10, 2004
 JV0217
 JV0217  HISTORY     - Date     Condition        Report By
 JV0217  HISTORY     - 1960     MONUMENTED       CGS
 JV0217  HISTORY     - 20041010 GOOD             GEOCAC
 JV0217
 JV0217                          STATION DESCRIPTION
 JV0217
 JV0217'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0217'3.4 MI SE FROM JARRETTSVILLE.
 JV0217'ABOUT 3.4 MILES SOUTHEAST ALONG STATE HIGHWAY 23 FROM THE
 JV0217'INTERSECTION OF STATE HIGHWAY 165 AT JARRETTSVILLE, ABOUT 3.45
 JV0217'MILES NORTHWEST ALONG STATE HIGHWAY 23 FROM THE STATE BANK AT
 JV0217'FOREST HILL, 162 FEET EAST OF THE CENTER OF THE JUNCTION OF HIGHWAY
 JV0217'23 AND COOPTOWN ROAD, 111 FEET NORTHEAST OF AND ACROSS COOPTOWN
 JV0217'ROAD FROM THE CENTER LINE OF HIGHWAY 23, 118 FEET EAST-SOUTHEAST
 JV0217'OF THE EAST CORNER OF A FRAME BUILDING HOUSING A STORE AND
 JV0217'RESIDENCE, 20 FEET NORTH OF THE CENTER LINE OF COOPTOWN ROAD,
 JV0217'25 FEET EAST-SOUTHEAST OF A 7-INCH MULBERRY TREE, 5 1/2 FEET
 JV0217'NORTHEAST OF POWER LINE POLE 106589, 36 1/2 FEET NORTH OF AND
 JV0217'ACROSS THE ROAD FROM THE NORTH CORNER OF A CONCRETE BLOCK BUILDING,
 JV0217'1 1/2 FEET SOUTHEAST OF A STEEL WITNESS POST, 2 1/2 FEET ABOVE
 JV0217'THE LEVEL OF THE HIGHWAY, AND SET IN TOP OF A CONCRETE POST
 JV0217'FLUSH WITH THE GROUND.
 JV0217
 JV0217                          STATION RECOVERY (2004)
 JV0217
 JV0217'RECOVERY NOTE BY GEOCACHING 2004 (MFL)
 JV0217'FRAME BUILDING IS NOW A RESTAURANT/BAR. STATION IS UNDER APPROXIMATELY
 JV0217'1 INCH OF DIRT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI6319 ***********************************************************************
 AI6319  DESIGNATION -  C12 010
 AI6319  PID         -  AI6319
 AI6319  STATE/COUNTY-  MD/ALLEGANY
 AI6319  COUNTRY     -  US
 AI6319  USGS QUAD   -  CUMBERLAND (2016)
 AI6319
 AI6319                         *CURRENT SURVEY CONTROL
 AI6319  ______________________________________________________________________
 AI6319* NAD 83(2011) POSITION- 39 41 29.28432(N) 078 48 03.15836(W)   ADJUSTED
 AI6319* NAD 83(2011) ELLIP HT-   200.075 (meters)        (06/27/12)   ADJUSTED
 AI6319* NAD 83(2011) EPOCH   -  2010.00
 AI6319* NAVD 88 ORTHO HEIGHT -   232.55  (meters)      763.0   (feet) LEVELING
 AI6319  ______________________________________________________________________
 AI6319  GEOID HEIGHT    -        -32.522 (meters)                     GEOID18
 AI6319  NAD 83(2011) X  -    954,551.238 (meters)                     COMP
 AI6319  NAD 83(2011) Y  - -4,821,223.477 (meters)                     COMP
 AI6319  NAD 83(2011) Z  -  4,051,811.930 (meters)                     COMP
 AI6319  LAPLACE CORR    -         -7.84  (seconds)                    DEFLEC18
 AI6319  VERT ORDER      -  THIRD ?
 AI6319
 AI6319  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI6319  Standards:
 AI6319         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI6319            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI6319  -------------------------------------------------------------------
 AI6319  NETWORK    1.00   1.82           0.44   0.37   0.93      0.14163173
 AI6319  -------------------------------------------------------------------
 AI6319  Click here for local accuracies and other accuracy information.
 AI6319
 AI6319.The horizontal coordinates were established by GPS observations
 AI6319.and adjusted by the National Geodetic Survey in June 2012.
 AI6319
 AI6319.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI6319.been affixed to the stable North American tectonic plate. See 
 AI6319.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI6319
 AI6319.The horizontal coordinates are valid at the epoch date displayed above
 AI6319.which is a decimal equivalence of Year/Month/Day.
 AI6319
 AI6319.The orthometric height was determined by differential leveling.
 AI6319.The vertical network tie was performed by a horz. field party for horz.
 AI6319.obs reductions. Reset procedures were used to establish the elevation.
 AI6319
 AI6319.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI6319.GEOID18 height accuracy estimate available here.
 AI6319
 AI6319.Click photographs - Photos may exist for this station.
 AI6319
 AI6319.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI6319
 AI6319.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI6319
 AI6319.The ellipsoidal height was determined by GPS observations
 AI6319.and is referenced to NAD 83.
 AI6319
 AI6319. The following values were computed from the NAD 83(2011) position.
 AI6319
 AI6319;                    North         East     Units Scale Factor Converg.
 AI6319;SPC MD       -   226,297.315   245,528.367   MT  1.00005117   -1 07 49.1
 AI6319;SPC MD       -   742,443.77    805,537.65   sFT  1.00005117   -1 07 49.1
 AI6319;UTM  17      - 4,395,825.858   688,567.194   MT  1.00003778   +1 24 17.6
 AI6319
 AI6319!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI6319!SPC MD       -   0.99996861  x   1.00005117  =   1.00001978
 AI6319!UTM  17      -   0.99996861  x   1.00003778  =   1.00000639
 AI6319
 AI6319:                Primary Azimuth Mark                     Grid Az
 AI6319:SPC MD       -  C12 050                                  070 03 10.5
 AI6319:UTM  17      -  C12 050                                  067 31 03.8
 AI6319
 AI6319_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8856795825(NAD 83)
 AI6319
 AI6319|---------------------------------------------------------------------|
 AI6319| PID    Reference Object                     Distance      Geod. Az  |
 AI6319|                                                           dddmmss.s |
 AI6319| AI6312 C12 050                             APPROX. 1.2 KM 0685521.4 |
 AI6319| AI6315 C12 040                             APPROX. 1.0 KM 0762134.9 |
 AI6319|---------------------------------------------------------------------|
 AI6319
 AI6319                          SUPERSEDED SURVEY CONTROL
 AI6319
 AI6319  NAD 83(2007)-  39 41 29.28452(N)    078 48 03.15910(W) AD(2002.00) 0
 AI6319  ELLIP H (02/10/07)  200.092  (m)                       GP(2002.00)    
 AI6319  ELLIP H (08/30/02)  200.093  (m)                       GP(       ) 4 2
 AI6319  NAD 83(1991)-  39 41 29.28472(N)    078 48 03.15888(W) AD(       ) 1
 AI6319  ELLIP H (04/20/00)  200.040  (m)                       GP(       ) 4 1
 AI6319
 AI6319.Superseded values are not recommended for survey control.
 AI6319
 AI6319.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI6319.See file dsdata.pdf to determine how the superseded data were derived.
 AI6319
 AI6319_MARKER: DD = SURVEY DISK
 AI6319_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI6319_STAMPING: C12-010
 AI6319_MARK LOGO: MD-001
 AI6319_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI6319_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AI6319_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI6319+SATELLITE: SATELLITE OBSERVATIONS - 1999
 AI6319
 AI6319  HISTORY     - Date     Condition        Report By
 AI6319  HISTORY     - 1999     MONUMENTED       MD-001
 AI6319
 AI6319                          STATION DESCRIPTION
 AI6319
 AI6319'DESCRIBED BY ALLEGANY COUNTY MARYLAND 1999
 AI6319'TO REACH 5 MI (8.0 KM) NORTH OF CUMBERLAND.  IN ALLEGANY COUNTY,
 AI6319'MARYLAND, FROM CITY HALL IN CUMBERLAND, 0.2 MI (0.3 KM) NORTH ON
 AI6319'BEDFORD STREET TO HENDERSON BOULEVARD, 0.8 MI (1.3 KM) NORTHEASTERLY
 AI6319'TO OLD ROUTE 40, 2 MI (3.2 KM) THROUGH THE NARROWS TO MARYLAND ROUTE
 AI6319'36, 2.8 MI (4.5 KM) NORTH, CONCRETE MONUMENT ON SOUTH SIDE OF HIGHWAY,
 AI6319'STANDARD DISK MARKED C12010.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI6324 ***********************************************************************
 AI6324  DESIGNATION -  C12 020
 AI6324  PID         -  AI6324
 AI6324  STATE/COUNTY-  MD/ALLEGANY
 AI6324  COUNTRY     -  US
 AI6324  USGS QUAD   -  CUMBERLAND (2016)
 AI6324
 AI6324                         *CURRENT SURVEY CONTROL
 AI6324  ______________________________________________________________________
 AI6324* NAD 83(2011) POSITION- 39 41 30.14135(N) 078 48 13.15880(W)   ADJUSTED
 AI6324* NAD 83(2011) ELLIP HT-   204.603 (meters)        (06/27/12)   ADJUSTED
 AI6324* NAD 83(2011) EPOCH   -  2010.00
 AI6324* NAVD 88 ORTHO HEIGHT -   237.06  (meters)      777.8   (feet) LEVELING
 AI6324  ______________________________________________________________________
 AI6324  GEOID HEIGHT    -        -32.511 (meters)                     GEOID18
 AI6324  NAD 83(2011) X  -    954,314.886 (meters)                     COMP
 AI6324  NAD 83(2011) Y  - -4,821,256.609 (meters)                     COMP
 AI6324  NAD 83(2011) Z  -  4,051,835.162 (meters)                     COMP
 AI6324  LAPLACE CORR    -         -8.26  (seconds)                    DEFLEC18
 AI6324  VERT ORDER      -  THIRD ?
 AI6324
 AI6324  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI6324  Standards:
 AI6324         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI6324            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI6324  -------------------------------------------------------------------
 AI6324  NETWORK    0.90   1.72           0.40   0.33   0.88      0.00864682
 AI6324  -------------------------------------------------------------------
 AI6324  Click here for local accuracies and other accuracy information.
 AI6324
 AI6324.The horizontal coordinates were established by GPS observations
 AI6324.and adjusted by the National Geodetic Survey in June 2012.
 AI6324
 AI6324.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI6324.been affixed to the stable North American tectonic plate. See 
 AI6324.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI6324
 AI6324.The horizontal coordinates are valid at the epoch date displayed above
 AI6324.which is a decimal equivalence of Year/Month/Day.
 AI6324
 AI6324.The orthometric height was determined by differential leveling.
 AI6324.The vertical network tie was performed by a horz. field party for horz.
 AI6324.obs reductions. Reset procedures were used to establish the elevation.
 AI6324
 AI6324.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI6324.GEOID18 height accuracy estimate available here.
 AI6324
 AI6324.Click photographs - Photos may exist for this station.
 AI6324
 AI6324.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI6324
 AI6324.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI6324
 AI6324.The ellipsoidal height was determined by GPS observations
 AI6324.and is referenced to NAD 83.
 AI6324
 AI6324. The following values were computed from the NAD 83(2011) position.
 AI6324
 AI6324;                    North         East     Units Scale Factor Converg.
 AI6324;SPC MD       -   226,328.447   245,290.644   MT  1.00005123   -1 07 55.3
 AI6324;SPC MD       -   742,545.91    804,757.72   sFT  1.00005123   -1 07 55.3
 AI6324;UTM  17      - 4,395,846.444   688,328.329   MT  1.00003668   +1 24 11.2
 AI6324
 AI6324!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI6324!SPC MD       -   0.99996790  x   1.00005123  =   1.00001913
 AI6324!UTM  17      -   0.99996790  x   1.00003668  =   1.00000458
 AI6324
 AI6324:                Primary Azimuth Mark                     Grid Az
 AI6324:SPC MD       -  C12 050                                  074 30 47.7
 AI6324:UTM  17      -  C12 050                                  071 58 41.2
 AI6324
 AI6324_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8832895846(NAD 83)
 AI6324
 AI6324|---------------------------------------------------------------------|
 AI6324| PID    Reference Object                     Distance      Geod. Az  |
 AI6324|                                                           dddmmss.s |
 AI6324| AI6312 C12 050                             APPROX. 1.4 KM 0732252.4 |
 AI6324| AI6315 C12 040                             APPROX. 1.2 KM 0800843.9 |
 AI6324| AI6319 C12 010                             239.741 METERS 09620     |
 AI6324|---------------------------------------------------------------------|
 AI6324
 AI6324                          SUPERSEDED SURVEY CONTROL
 AI6324
 AI6324  NAD 83(2007)-  39 41 30.14155(N)    078 48 13.15951(W) AD(2002.00) 0
 AI6324  ELLIP H (02/10/07)  204.620  (m)                       GP(2002.00)    
 AI6324  ELLIP H (08/30/02)  204.622  (m)                       GP(       ) 4 2
 AI6324  NAD 83(1991)-  39 41 30.14176(N)    078 48 13.15930(W) AD(       ) 1
 AI6324  ELLIP H (04/20/00)  204.567  (m)                       GP(       ) 4 1
 AI6324
 AI6324.Superseded values are not recommended for survey control.
 AI6324
 AI6324.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI6324.See file dsdata.pdf to determine how the superseded data were derived.
 AI6324
 AI6324_MARKER: DD = SURVEY DISK
 AI6324_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI6324_STAMPING: C12-020
 AI6324_MARK LOGO: MD-001
 AI6324_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI6324_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AI6324_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI6324+SATELLITE: SATELLITE OBSERVATIONS - 1999
 AI6324
 AI6324  HISTORY     - Date     Condition        Report By
 AI6324  HISTORY     - 1999     MONUMENTED       MD-001
 AI6324
 AI6324                          STATION DESCRIPTION
 AI6324
 AI6324'DESCRIBED BY ALLEGANY COUNTY MARYLAND 1999
 AI6324'TO REACH 5 MI (8.0 KM) NORTH OF CUMBERLAND.  IN ALLEGANY COUNTY,
 AI6324'MARYLAND, FROM CITY HALL IN CUMBERLAND, 0.2 MI (0.3 KM) NORTH ON
 AI6324'BEDFORD STREET TO HENDERSON BOULEVARD, 0.8 MI (1.3 KM) NORTHEASTERLY
 AI6324'TO OLD ROUTE 40, 2 MI (3.2 KM) THROUGH THE NARROWS TO MARYLAND ROUTE
 AI6324'36, 2.9MI NORTH, CONCRETE MONUMENT ON SOUTH SIDE OF HIGHWAY AND NORTH
 AI6324'SIDE OF PROENTY ROAD BEHIND GUARDRAIL, STANDARD DISK MARKED C12020.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI6315 ***********************************************************************
 AI6315  DESIGNATION -  C12 040
 AI6315  PID         -  AI6315
 AI6315  STATE/COUNTY-  MD/ALLEGANY
 AI6315  COUNTRY     -  US
 AI6315  USGS QUAD   -  CUMBERLAND (2016)
 AI6315
 AI6315                         *CURRENT SURVEY CONTROL
 AI6315  ______________________________________________________________________
 AI6315* NAD 83(2011) POSITION- 39 41 37.01679(N) 078 47 21.90166(W)   ADJUSTED
 AI6315* NAD 83(2011) ELLIP HT-   185.849 (meters)        (06/27/12)   ADJUSTED
 AI6315* NAD 83(2011) EPOCH   -  2010.00
 AI6315* NAVD 88 ORTHO HEIGHT -   218.38  (meters)      716.5   (feet) LEVELING
 AI6315  ______________________________________________________________________
 AI6315  GEOID HEIGHT    -        -32.558 (meters)                     GEOID18
 AI6315  NAD 83(2011) X  -    955,483.810 (meters)                     COMP
 AI6315  NAD 83(2011) Y  - -4,820,872.308 (meters)                     COMP
 AI6315  NAD 83(2011) Z  -  4,051,986.356 (meters)                     COMP
 AI6315  LAPLACE CORR    -         -5.46  (seconds)                    DEFLEC18
 AI6315  VERT ORDER      -  THIRD ?
 AI6315
 AI6315  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI6315  Standards:
 AI6315         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI6315            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI6315  -------------------------------------------------------------------
 AI6315  NETWORK    0.86   1.78           0.38   0.32   0.91     -0.02131938
 AI6315  -------------------------------------------------------------------
 AI6315  Click here for local accuracies and other accuracy information.
 AI6315
 AI6315.The horizontal coordinates were established by GPS observations
 AI6315.and adjusted by the National Geodetic Survey in June 2012.
 AI6315
 AI6315.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI6315.been affixed to the stable North American tectonic plate. See 
 AI6315.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI6315
 AI6315.The horizontal coordinates are valid at the epoch date displayed above
 AI6315.which is a decimal equivalence of Year/Month/Day.
 AI6315
 AI6315.The orthometric height was determined by differential leveling.
 AI6315.The vertical network tie was performed by a horz. field party for horz.
 AI6315.obs reductions. Reset procedures were used to establish the elevation.
 AI6315
 AI6315.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI6315.GEOID18 height accuracy estimate available here.
 AI6315
 AI6315.Click photographs - Photos may exist for this station.
 AI6315
 AI6315.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI6315
 AI6315.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI6315
 AI6315.The ellipsoidal height was determined by GPS observations
 AI6315.and is referenced to NAD 83.
 AI6315
 AI6315. The following values were computed from the NAD 83(2011) position.
 AI6315
 AI6315;                    North         East     Units Scale Factor Converg.
 AI6315;SPC MD       -   226,516.431   246,515.922   MT  1.00005171   -1 07 23.2
 AI6315;SPC MD       -   743,162.66    808,777.65   sFT  1.00005171   -1 07 23.2
 AI6315;UTM  17      - 4,396,088.440   689,544.079   MT  1.00004233   +1 24 44.2
 AI6315
 AI6315!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI6315!SPC MD       -   0.99997084  x   1.00005171  =   1.00002255
 AI6315!UTM  17      -   0.99997084  x   1.00004233  =   1.00001317
 AI6315
 AI6315_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8954496088(NAD 83)
 AI6315
 AI6315|---------------------------------------------------------------------|
 AI6315| PID    Reference Object                     Distance      Geod. Az  |
 AI6315|                                                           dddmmss.s |
 AI6315| AI6312 C12 050                             238.131 METERS 03535     |
 AI6315|---------------------------------------------------------------------|
 AI6315
 AI6315                          SUPERSEDED SURVEY CONTROL
 AI6315
 AI6315  NAD 83(2007)-  39 41 37.01699(N)    078 47 21.90238(W) AD(2002.00) 0
 AI6315  ELLIP H (02/10/07)  185.867  (m)                       GP(2002.00)    
 AI6315  ELLIP H (08/30/02)  185.869  (m)                       GP(       ) 4 2
 AI6315  NAD 83(1991)-  39 41 37.01719(N)    078 47 21.90213(W) AD(       ) 1
 AI6315  ELLIP H (04/20/00)  185.816  (m)                       GP(       ) 4 1
 AI6315
 AI6315.Superseded values are not recommended for survey control.
 AI6315
 AI6315.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI6315.See file dsdata.pdf to determine how the superseded data were derived.
 AI6315
 AI6315_MARKER: DD = SURVEY DISK
 AI6315_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI6315_STAMPING: C12-040
 AI6315_MARK LOGO: MD-001
 AI6315_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI6315_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AI6315_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI6315+SATELLITE: SATELLITE OBSERVATIONS - 1999
 AI6315
 AI6315  HISTORY     - Date     Condition        Report By
 AI6315  HISTORY     - 1999     MONUMENTED       MD-001
 AI6315  HISTORY     - 20110318 POOR             MDLPP
 AI6315
 AI6315                          STATION DESCRIPTION
 AI6315
 AI6315'DESCRIBED BY ALLEGANY COUNTY MARYLAND 1999
 AI6315'TO REACH 5 MI (8.0 KM) NORTH OF CUMBERLAND.  IN ALLEGANY COUNTY,
 AI6315'MARYLAND, FROM CITY HALL IN CUMBERLAND, 0.2 MI (0.3 KM) NORTH ON
 AI6315'BEDFORD STREET TO HENDERSON BOULEVARD, 0.8 MI (1.3 KM) NORTHEASTERLY
 AI6315'TO OLD ROUTE 40, 2 MI (3.2 KM) THROUGH THE NARROWS TO MARYLAND ROUTE
 AI6315'36, 2.2 MI (3.5 KM) NORTH TO MARYLAND ROUTE 35 AT CORRIGANVILLE, 200
 AI6315'FEET (61.0 M) NORTH TO KRIEGBAUM ROAD, 500 FEET (152.4 M) SOUTH TO
 AI6315'CORRIGAN DRIVE, CONCRETE MONUMENT ON SOUTH SIDE OF CORRIGAN DRIVE AND
 AI6315'EAST SIDE OF KRIEGBAUM ROAD, STANDARD DISK MARKED C12040.
 AI6315
 AI6315                          STATION RECOVERY (2011)
 AI6315
 AI6315'RECOVERY NOTE BY MASON DIXON LN PRES PART 2011 (PAS)
 AI6315'RECOVERED A BROKEN CONCRETE BASE WHICH APPEARS TO BE THE REMAINS OF
 AI6315'THE MARK
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI6312 ***********************************************************************
 AI6312  DESIGNATION -  C12 050
 AI6312  PID         -  AI6312
 AI6312  STATE/COUNTY-  MD/ALLEGANY
 AI6312  COUNTRY     -  US
 AI6312  USGS QUAD   -  CUMBERLAND (2016)
 AI6312
 AI6312                         *CURRENT SURVEY CONTROL
 AI6312  ______________________________________________________________________
 AI6312* NAD 83(2011) POSITION- 39 41 43.29675(N) 078 47 16.08698(W)   ADJUSTED
 AI6312* NAD 83(2011) ELLIP HT-   182.882 (meters)        (06/27/12)   ADJUSTED
 AI6312* NAD 83(2011) EPOCH   -  2010.00
 AI6312* NAVD 88 ORTHO HEIGHT -   215.41  (meters)      706.7   (feet) LEVELING
 AI6312  ______________________________________________________________________
 AI6312  GEOID HEIGHT    -        -32.560 (meters)                     GEOID18
 AI6312  NAD 83(2011) X  -    955,595.214 (meters)                     COMP
 AI6312  NAD 83(2011) Y  - -4,820,721.785 (meters)                     COMP
 AI6312  NAD 83(2011) Z  -  4,052,133.496 (meters)                     COMP
 AI6312  LAPLACE CORR    -         -5.29  (seconds)                    DEFLEC18
 AI6312  VERT ORDER      -  THIRD ?
 AI6312
 AI6312  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI6312  Standards:
 AI6312         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI6312            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI6312  -------------------------------------------------------------------
 AI6312  NETWORK    0.85   1.65           0.38   0.31   0.84     -0.03956439
 AI6312  -------------------------------------------------------------------
 AI6312  Click here for local accuracies and other accuracy information.
 AI6312
 AI6312.The horizontal coordinates were established by GPS observations
 AI6312.and adjusted by the National Geodetic Survey in June 2012.
 AI6312
 AI6312.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI6312.been affixed to the stable North American tectonic plate. See 
 AI6312.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI6312
 AI6312.The horizontal coordinates are valid at the epoch date displayed above
 AI6312.which is a decimal equivalence of Year/Month/Day.
 AI6312
 AI6312.The orthometric height was determined by differential leveling.
 AI6312.The vertical network tie was performed by a horz. field party for horz.
 AI6312.obs reductions. Reset procedures were used to establish the elevation.
 AI6312
 AI6312.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI6312.GEOID18 height accuracy estimate available here.
 AI6312
 AI6312.Click photographs - Photos may exist for this station.
 AI6312
 AI6312.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI6312
 AI6312.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI6312
 AI6312.The ellipsoidal height was determined by GPS observations
 AI6312.and is referenced to NAD 83.
 AI6312
 AI6312. The following values were computed from the NAD 83(2011) position.
 AI6312
 AI6312;                    North         East     Units Scale Factor Converg.
 AI6312;SPC MD       -   226,707.372   246,658.237   MT  1.00005214   -1 07 19.5
 AI6312;SPC MD       -   743,789.10    809,244.57   sFT  1.00005214   -1 07 19.5
 AI6312;UTM  17      - 4,396,285.488   689,677.807   MT  1.00004296   +1 24 48.1
 AI6312
 AI6312!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI6312!SPC MD       -   0.99997131  x   1.00005214  =   1.00002345
 AI6312!UTM  17      -   0.99997131  x   1.00004296  =   1.00001427
 AI6312
 AI6312:                Primary Azimuth Mark                     Grid Az
 AI6312:SPC MD       -  C12 010                                  250 03 11.0
 AI6312:UTM  17      -  C12 010                                  247 31 03.4
 AI6312
 AI6312_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8967796285(NAD 83)
 AI6312
 AI6312|---------------------------------------------------------------------|
 AI6312| PID    Reference Object                     Distance      Geod. Az  |
 AI6312|                                                           dddmmss.s |
 AI6312| AI6315 C12 040                             238.131 METERS 21535     |
 AI6312| AI6319 C12 010                             APPROX. 1.2 KM 2485551.5 |
 AI6312| AI6324 C12 020                             APPROX. 1.4 KM 2532328.9 |
 AI6312|---------------------------------------------------------------------|
 AI6312
 AI6312                          SUPERSEDED SURVEY CONTROL
 AI6312
 AI6312  NAD 83(2007)-  39 41 43.29695(N)    078 47 16.08771(W) AD(2002.00) 0
 AI6312  ELLIP H (02/10/07)  182.899  (m)                       GP(2002.00)    
 AI6312  ELLIP H (08/30/02)  182.901  (m)                       GP(       ) 4 2
 AI6312  NAD 83(1991)-  39 41 43.29716(N)    078 47 16.08744(W) AD(       ) 1
 AI6312  ELLIP H (04/20/00)  182.851  (m)                       GP(       ) 4 1
 AI6312
 AI6312.Superseded values are not recommended for survey control.
 AI6312
 AI6312.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI6312.See file dsdata.pdf to determine how the superseded data were derived.
 AI6312
 AI6312_MARKER: DD = SURVEY DISK
 AI6312_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI6312_STAMPING: C12 050
 AI6312_MARK LOGO: MD-001
 AI6312_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI6312_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AI6312_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI6312+SATELLITE: SATELLITE OBSERVATIONS - March 19, 2011
 AI6312
 AI6312  HISTORY     - Date     Condition        Report By
 AI6312  HISTORY     - 1999     MONUMENTED       MD-001
 AI6312  HISTORY     - 20110319 GOOD             MDLPP
 AI6312
 AI6312                          STATION DESCRIPTION
 AI6312
 AI6312'DESCRIBED BY ALLEGANY COUNTY MARYLAND 1999
 AI6312'TO REACH 5 MI (8.0 KM) NORTH OF CUMBERLAND.  IN ALLEGANY COUNTY,
 AI6312'MARYLAND, FROM CITY HALL IN CUMBERLAND, 0.2 MI (0.3 KM) NORTH ON
 AI6312'BEDFORD STREET TO HENDERSON BOULEVARD, 0.8 MI (1.3 KM) NORTHEASTERLY
 AI6312'TO OLD ROUTE 40, 2 MI (3.2 KM) THROUGH THE NARROWS TO MARYLAND ROUTE
 AI6312'36, 2.2 MI (3.5 KM) NORTH TO MARYLAND ROUTE 35 AT CORRIGANVILLE, 200
 AI6312'FEET (61.0 M) NORTH TO KRIEGBAUM ROAD, 500 FEET (152.4 M) SOUTH TO
 AI6312'CORRIGAN DRIVE, 600 FEET (182.9 M) TO ATHLETIC FIELD, CONCRETE
 AI6312'MONUMENT NEAR WASTEWATER MANHOLE, STANDARD DISK MARKED C12 050.
 AI6312
 AI6312                          STATION RECOVERY (2011)
 AI6312
 AI6312'RECOVERY NOTE BY MASON DIXON LN PRES PART 2011 (PAS)
 AI6312'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8272 ***********************************************************************
 HV8272  DESIGNATION -  CA 8
 HV8272  PID         -  HV8272
 HV8272  STATE/COUNTY-  MD/DORCHESTER
 HV8272  COUNTRY     -  US
 HV8272  USGS QUAD   -  CAMBRIDGE (2016)
 HV8272
 HV8272                         *CURRENT SURVEY CONTROL
 HV8272  ______________________________________________________________________
 HV8272* NAD 83(1991) POSITION- 38 34 14.18758(N) 076 03 47.49701(W)   ADJUSTED
 HV8272* NAVD 88 ORTHO HEIGHT -     3.831 (meters)       12.57  (feet) ADJUSTED
 HV8272  ______________________________________________________________________
 HV8272  GEOID HEIGHT    -        -35.056 (meters)                     GEOID18
 HV8272  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 HV8272  DYNAMIC HEIGHT  -          3.829 (meters)       12.56  (feet) COMP
 HV8272  MODELED GRAVITY -    980,017.6   (mgal)                       NAVD 88
 HV8272
 HV8272  HORZ ORDER      -  SECOND
 HV8272  VERT ORDER      -  SECOND    CLASS I
 HV8272
 HV8272.The horizontal coordinates were established by classical geodetic methods
 HV8272.and adjusted by the National Geodetic Survey in January 1992.
 HV8272
 HV8272.The orthometric height was determined by differential leveling and
 HV8272.adjusted by the NATIONAL GEODETIC SURVEY
 HV8272.in October 1997.
 HV8272
 HV8272.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8272.GEOID18 height accuracy estimate available here.
 HV8272
 HV8272.Click photographs - Photos may exist for this station.
 HV8272
 HV8272.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8272
 HV8272.The dynamic height is computed by dividing the NAVD 88
 HV8272.geopotential number by the normal gravity value computed on the
 HV8272.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8272.degrees latitude (g = 980.6199 gals.).
 HV8272
 HV8272.The modeled gravity was interpolated from observed gravity values.
 HV8272
 HV8272. The following values were computed from the NAD 83(1991) position.
 HV8272
 HV8272;                    North         East     Units Scale Factor Converg.
 HV8272;SPC MD       -   100,759.868   481,635.998   MT  0.99996395   +0 35 16.7
 HV8272;SPC MD       -   330,576.33  1,580,167.44   sFT  0.99996395   +0 35 16.7
 HV8272;UTM  18      - 4,269,664.017   407,381.156   MT  0.99970564   -0 39 46.5
 HV8272
 HV8272!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8272!SPC MD       -   1.00000490  x   0.99996395  =   0.99996885
 HV8272!UTM  18      -   1.00000490  x   0.99970564  =   0.99971054
 HV8272
 HV8272_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0738169664(NAD 83)
 HV8272
 HV8272                          SUPERSEDED SURVEY CONTROL
 HV8272
 HV8272  NAD 83(1986)-  38 34 14.18408(N)    076 03 47.51409(W) AD(       ) 2
 HV8272  NGVD 29               4.07   (m)           13.4    (f) LEVELING    3  
 HV8272
 HV8272.Superseded values are not recommended for survey control.
 HV8272
 HV8272.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8272.See file dsdata.pdf to determine how the superseded data were derived.
 HV8272
 HV8272_MARKER: DE = TRAVERSE STATION DISK
 HV8272_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV8272_SP_SET: SIDEWALK
 HV8272_STAMPING: CA 8
 HV8272_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8272_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8272_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8272+SATELLITE: SATELLITE OBSERVATIONS - July 22, 2008
 HV8272
 HV8272  HISTORY     - Date     Condition        Report By
 HV8272  HISTORY     - 1987     MONUMENTED       NGS
 HV8272  HISTORY     - 19870101 GOOD             MDDT
 HV8272  HISTORY     - 20010331 GOOD             NGS
 HV8272  HISTORY     - 20021129 GOOD             USPSQD
 HV8272  HISTORY     - 20041126 GOOD             USPSQD
 HV8272  HISTORY     - 20051204 GOOD             USPSQD
 HV8272  HISTORY     - 20070226 GOOD             USPSQD
 HV8272  HISTORY     - 20080722 GOOD             NGS
 HV8272
 HV8272                          STATION DESCRIPTION
 HV8272
 HV8272'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HV8272'THE STATION IS LOCATED ABOUT 1.3 KM (0.8 MI)
 HV8272'EAST OF THE APPROXIMATE CENTER OF CAMBRIDGE.
 HV8272'OWNERSHIP--ROAD RIGHT OF WAY.
 HV8272'
 HV8272'NO TO REACH IS NECESSARY.
 HV8272'
 HV8272'THE STATION IS A CITY OF CAMBRIDGE CONTROL TRAVERSE DISK
 HV8272'STAMPED---CA 8---,
 HV8272'SET INTO A DRILL HOLE IN THE SIDEWALK ALONG THE WEST SIDE OF THE
 HV8272'OLD U.S. HIGHWAY 50 BRIDGE OVER THE CHOPTANK RIVER NEAR CAMBRIDGE.
 HV8272'14.8 METERS (48.7 FT) NORTHEAST FROM A POWERLINE POLE NUMBER
 HV8272'33643 00729,
 HV8272'19.4 METERS (63.7 FT) NORTHEAST FROM A DRAINAGE INLET,
 HV8272'22.7 METERS (74.5 FT) SOUTHEAST FROM A DRAINAGE INLET,
 HV8272'1.8 METERS (5.9 FT) SOUTH FROM A BRONZE PLAQUE AND
 HV8272'3.3 METERS (10.8 FT) SOUTH-SOUTHWEST FROM A CONCRETE RAIL POST.
 HV8272
 HV8272                          STATION RECOVERY (1987)
 HV8272
 HV8272'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1987 (RGP)
 HV8272'AT THE SOUTH END OF THE OLD CHOPTANK RIVER BRIDGE, 14.8 M (48.6 FT) NE
 HV8272'FROM A  POWERLINE POLE, NUMBER 33643-00729, 19.4 M (63.6 FT) NE FROM A
 HV8272'DRAINAGE INLET, 22.7 M (74.5 FT) SE FROM A DRAINAGE INLET, 1.8 M (5.9
 HV8272'FT) SOUTH FROM A BRONZE PLAQUE,  AND 3.3 M (10.8 FT) SSW FROM A
 HV8272'CONCRETE BRIDGE RAIL POST.
 HV8272
 HV8272                          STATION RECOVERY (2001)
 HV8272
 HV8272'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV8272'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV8272
 HV8272                          STATION RECOVERY (2002)
 HV8272
 HV8272'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV8272'RECOVERED IN GOOD CONDITION.
 HV8272
 HV8272                          STATION RECOVERY (2004)
 HV8272
 HV8272'RECOVERY NOTE BY US POWER SQUADRON 2004 (JKW)
 HV8272'RECOVERED IN GOOD CONDITION.
 HV8272
 HV8272                          STATION RECOVERY (2005)
 HV8272
 HV8272'RECOVERY NOTE BY US POWER SQUADRON 2005 (LGD)
 HV8272'RECOVERED IN GOOD CONDITION.
 HV8272
 HV8272                          STATION RECOVERY (2007)
 HV8272
 HV8272'RECOVERY NOTE BY US POWER SQUADRON 2007
 HV8272'RECOVERED IN GOOD CONDITION.
 HV8272
 HV8272                          STATION RECOVERY (2008)
 HV8272
 HV8272'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 HV8272'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1566 ***********************************************************************
 HU1566  DESIGNATION -  CABE
 HU1566  PID         -  HU1566
 HU1566  STATE/COUNTY-  MD/WORCESTER
 HU1566  COUNTRY     -  US
 HU1566  USGS QUAD   -  SELBYVILLE (2016)
 HU1566
 HU1566                         *CURRENT SURVEY CONTROL
 HU1566  ______________________________________________________________________
 HU1566* NAD 83(1991) POSITION- 38 27 04.19331(N) 075 13 06.58195(W)   ADJUSTED
 HU1566* NAVD 88 ORTHO HEIGHT -    10.6   (meters)       35.    (feet) VERTCON3
 HU1566  ______________________________________________________________________
 HU1566  GEOID HEIGHT    -        -35.869 (meters)                     GEOID18
 HU1566  LAPLACE CORR    -         -0.37  (seconds)                    DEFLEC18
 HU1566  HORZ ORDER      -  SECOND
 HU1566
 HU1566.The horizontal coordinates were established by classical geodetic methods
 HU1566.and adjusted by the National Geodetic Survey in January 1992.
 HU1566
 HU1566.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1566.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1566
 HU1566.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1566.GEOID18 height accuracy estimate available here.
 HU1566
 HU1566.Click photographs - Photos may exist for this station.
 HU1566
 HU1566.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1566
 HU1566. The following values were computed from the NAD 83(1991) position.
 HU1566
 HU1566;                    North         East     Units Scale Factor Converg.
 HU1566;SPC MD       -    88,599.810   555,497.057   MT  0.99997714   +1 07 05.3
 HU1566;SPC MD       -   290,681.21  1,822,493.26   sFT  0.99997714   +1 07 05.3
 HU1566;UTM  18      - 4,255,897.226   480,934.834   MT  0.99960448   -0 08 09.1
 HU1566
 HU1566!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1566!SPC MD       -   1.00000397  x   0.99997714  =   0.99998111
 HU1566!UTM  18      -   1.00000397  x   0.99960448  =   0.99960845
 HU1566
 HU1566:                Primary Azimuth Mark                     Grid Az
 HU1566:SPC MD       -  SLAB C 1974                              075 36 53.7
 HU1566:UTM  18      -  SLAB C 1974                              076 52 08.1
 HU1566
 HU1566_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8093455897(NAD 83)
 HU1566
 HU1566|---------------------------------------------------------------------|
 HU1566| PID    Reference Object                     Distance      Geod. Az  |
 HU1566|                                                           dddmmss.s |
 HU1566| HU1565 BOUNDARY MON EW 9 DE MD               6.498 METERS 00001     |
 HU1566| DC7876 CABE RM 1                            24.719 METERS 01540     |
 HU1566| HU1553 SLAB C 1974                         APPROX. 0.9 KM 0764359.0 |
 HU1566| HU1555 CABE RM 3                           259.022 METERS 19020     |
 HU1566| DC7877 CABE RM 2                            10.392 METERS 27958     |
 HU1566|---------------------------------------------------------------------|
 HU1566
 HU1566                          SUPERSEDED SURVEY CONTROL
 HU1566
 HU1566  NAD 83(1986)-  38 27 04.17777(N)    075 13 06.60540(W) AD(       ) 2
 HU1566  NAD 27      -  38 27 03.76690(N)    075 13 07.92908(W) AD(       ) 2
 HU1566  NGVD 29 (07/19/86)   10.8    (m)           35.     (f) VERT ANG       
 HU1566
 HU1566.Superseded values are not recommended for survey control.
 HU1566
 HU1566.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1566.See file dsdata.pdf to determine how the superseded data were derived.
 HU1566
 HU1566_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1566_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1566_STAMPING: CABE 1974
 HU1566_MARK LOGO: NGS
 HU1566_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1566+STABILITY: SURFACE MOTION
 HU1566
 HU1566  HISTORY     - Date     Condition        Report By
 HU1566  HISTORY     - 1974     MONUMENTED       NGS
 HU1566  HISTORY     - 1976     GOOD             NGS
 HU1566
 HU1566                          STATION DESCRIPTION
 HU1566
 HU1566'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1566'THE STATION IS LOCATED ABOUT 1.4 MILES WEST-NORTHWEST OF
 HU1566'BISHOPVILLE, MARYLAND, 0.6 MILE SOUTH-SOUTHEAST OF SELBYVILLE,
 HU1566'DELAWARE, ON ROAD RIGHT-OF-WAY AND NEAR THE MARYLAND-DELAWARE
 HU1566'STATE LINE.
 HU1566'
 HU1566'TO REACH THE STATION FROM THE POST OFFICE IN SELBYVILLE, GO
 HU1566'NORTHEAST ON CHURCH STREET FOR 0.2 MILE TO THE JUNCTION WITH
 HU1566'MAIN STREET AND STATE ROAD 54.  TURN RIGHT AND GO SOUTH-SOUTHEAST
 HU1566'ON STATE ROAD 54 FOR 0.4 MILE TO WHERE STATE ROAD 54 TURNS LEFT,
 HU1566'CONTINUE STRAIGHT AHEAD ON A PAVED ROAD, SOUTH, FOR 0.35 MILE TO
 HU1566'THE STATION ON THE LEFT.  CONTINUE SOUTH ON THE PAVED ROAD FOR 0.2
 HU1566'MILE TO REFERENCE MARK 3 (AZ. MK.) ON THE LEFT.
 HU1566'
 HU1566'STATION MARKS ARE STANDARD DISKS STAMPED CABE 1974.  THE SURFACE
 HU1566'DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT
 HU1566'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 85 FEET
 HU1566'SOUTH-SOUTHWEST OF A POWERLINE POLE, 30 FEET NORTHEAST OF A GUY
 HU1566'POLE AND 22 FEET SOUTHEAST OF THE CENTER OF THE PAVED ROAD.  THE
 HU1566'UNDERGROUND DISK IS SET IN THE TOP OF AN IRREGULAR MASS OF
 HU1566'CONCRETE 42 INCHES BELOW THE GROUND SURFACE.
 HU1566'
 HU1566'REFERENCE MARK 1, A STANDARD DISK STAMPED CABE NO 1 1974, IS
 HU1566'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1566'IS FLUSH WITH THE GROUND SURFACE.  IT IS 12 FEET SOUTHEAST OF
 HU1566'THE CENTER OF THE PAVED ROAD AND 3 FEET SOUTHWEST OF THE
 HU1566'POWERLINE POLE.
 HU1566'
 HU1566'REFERENCE MARK 2, A STANDARD DISK STAMPED CABE NO 2 1974, IS
 HU1566'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1566'IS FLUSH WITH THE GROUND SURFACE.  IT IS 69 FEET NORTHEAST OF
 HU1566'A 16-INCH PINE TREE, 34 FEET NORTH-NORTHWEST OF THE GUY POLE AND
 HU1566'12 FEET NORTHWEST OF THE CENTER OF THE PAVED ROAD.
 HU1566'
 HU1566'REFERENCE MARK 3, A STANDARD DISK STAMPED CABE NO 3 1974, IS
 HU1566'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1566'IS FLUSH WITH THE GROUND SURFACE.  IT IS 81 FEET SOUTHWEST OF
 HU1566'A POWERLINE POLE, 25 FEET NORTHEAST OF A POWERLINE POLE AND 18
 HU1566'FEET SOUTHEAST OF THE CENTER OF THE PAVED ROAD.  THE MARK SERVES
 HU1566'AS AN AZIMUTH MARK.
 HU1566
 HU1566                          STATION RECOVERY (1976)
 HU1566
 HU1566'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1566'THE STATION AND ALL MARKS WERE RECOVERED IN GOOD CONDITION AS
 HU1566'DESCRIBED IN 1974 DESCRIPTION.  THE DISTANCE AND DIRECTION TO
 HU1566'RMS CHECKED THE 1974 OBSERVATIONS.
 HU1566'
 HU1566'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 9 WAS ESTABLISHED
 HU1566'AT THIS DATE, SEE DESCRIPTION THEREOF.
 HU1566'
 HU1566'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1566'1 MILE EAST OF SELBYVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1555 ***********************************************************************
 HU1555  DESIGNATION -  CABE RM 3
 HU1555  PID         -  HU1555
 HU1555  STATE/COUNTY-  MD/WORCESTER
 HU1555  COUNTRY     -  US
 HU1555  USGS QUAD   -  SELBYVILLE (2016)
 HU1555
 HU1555                         *CURRENT SURVEY CONTROL
 HU1555  ______________________________________________________________________
 HU1555* NAD 83(1991) POSITION- 38 26 55.92933(N) 075 13 08.49878(W)   ADJUSTED
 HU1555* NAVD 88 ORTHO HEIGHT -    10.3   (meters)       34.    (feet) VERTCON3
 HU1555  ______________________________________________________________________
 HU1555  GEOID HEIGHT    -        -35.871 (meters)                     GEOID18
 HU1555  LAPLACE CORR    -         -0.39  (seconds)                    DEFLEC18
 HU1555  HORZ ORDER      -  SECOND
 HU1555
 HU1555.The horizontal coordinates were established by classical geodetic methods
 HU1555.and adjusted by the National Geodetic Survey in January 1992.
 HU1555
 HU1555.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1555.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1555
 HU1555.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1555.GEOID18 height accuracy estimate available here.
 HU1555
 HU1555.Click photographs - Photos may exist for this station.
 HU1555
 HU1555.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1555
 HU1555. The following values were computed from the NAD 83(1991) position.
 HU1555
 HU1555;                    North         East     Units Scale Factor Converg.
 HU1555;SPC MD       -    88,344.140   555,455.559   MT  0.99997744   +1 07 04.1
 HU1555;SPC MD       -   289,842.40  1,822,357.11   sFT  0.99997744   +1 07 04.1
 HU1555;UTM  18      - 4,255,642.620   480,887.769   MT  0.99960450   -0 08 10.3
 HU1555
 HU1555!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1555!SPC MD       -   1.00000402  x   0.99997744  =   0.99998146
 HU1555!UTM  18      -   1.00000402  x   0.99960450  =   0.99960852
 HU1555
 HU1555:                Primary Azimuth Mark                     Grid Az
 HU1555:SPC MD       -  NORMAN                                   281 47 19.4
 HU1555:UTM  18      -  NORMAN                                   283 02 33.8
 HU1555
 HU1555_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8088755642(NAD 83)
 HU1555
 HU1555|---------------------------------------------------------------------|
 HU1555| PID    Reference Object                     Distance      Geod. Az  |
 HU1555|                                                           dddmmss.s |
 HU1555| HU1566 CABE                                259.022 METERS 01020     |
 HU1555| HU1543 NORMAN                              APPROX. 1.2 KM 2825423.5 |
 HU1555|---------------------------------------------------------------------|
 HU1555
 HU1555                          SUPERSEDED SURVEY CONTROL
 HU1555
 HU1555  NAD 83(1986)-  38 26 55.91383(N)    075 13 08.52230(W) AD(       ) 2
 HU1555  NAD 27      -  38 26 55.50279(N)    075 13 09.84582(W) AD(       ) 2
 HU1555  NGVD 29 (07/19/86)   10.5    (m)           34.     (f) VERT ANG       
 HU1555
 HU1555.Superseded values are not recommended for survey control.
 HU1555
 HU1555.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1555.See file dsdata.pdf to determine how the superseded data were derived.
 HU1555
 HU1555_MARKER: DR = REFERENCE MARK DISK
 HU1555_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1555_STAMPING: CABE NO 3 1974
 HU1555_MARK LOGO: NGS
 HU1555_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1555+STABILITY: SURFACE MOTION
 HU1555
 HU1555  HISTORY     - Date     Condition        Report By
 HU1555  HISTORY     - 1974     MONUMENTED       NGS
 HU1555
 HU1555                          STATION DESCRIPTION
 HU1555
 HU1555'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
 HU1555'SEE STATION CABE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3601 ***********************************************************************
 JU3601  DESIGNATION -  CABIN
 JU3601  PID         -  JU3601
 JU3601  STATE/COUNTY-  MD/CECIL
 JU3601  COUNTRY     -  US
 JU3601  USGS QUAD   -  EARLEVILLE (2016)
 JU3601
 JU3601                         *CURRENT SURVEY CONTROL
 JU3601  ______________________________________________________________________
 JU3601* NAD 83(1991) POSITION- 39 27 46.59414(N) 075 57 59.22237(W)   ADJUSTED
 JU3601* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3601  ______________________________________________________________________
 JU3601  GEOID HEIGHT    -        -33.359 (meters)                     GEOID18
 JU3601  LAPLACE CORR    -         -0.70  (seconds)                    DEFLEC18
 JU3601  HORZ ORDER      -  THIRD
 JU3601
 JU3601.The horizontal coordinates were established by classical geodetic methods
 JU3601.and adjusted by the National Geodetic Survey in January 1992.
 JU3601
 JU3601.The orthometric height was scaled from a topographic map.
 JU3601
 JU3601.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3601.GEOID18 height accuracy estimate available here.
 JU3601
 JU3601.Click photographs - Photos may exist for this station.
 JU3601
 JU3601.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3601
 JU3601. The following values were computed from the NAD 83(1991) position.
 JU3601
 JU3601;                    North         East     Units Scale Factor Converg.
 JU3601;SPC MD       -   199,904.137   488,944.605   MT  1.00000229   +0 38 55.3
 JU3601;SPC MD       -   655,852.16  1,604,145.76   sFT  1.00000229   +0 38 55.3
 JU3601;UTM  18      - 4,368,597.574   416,860.651   MT  0.99968510   -0 36 51.4
 JU3601
 JU3601!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3601!SPC MD       -   1.00000511  x   1.00000229  =   1.00000740
 JU3601!UTM  18      -   1.00000511  x   0.99968510  =   0.99969021
 JU3601
 JU3601:                Primary Azimuth Mark                     Grid Az
 JU3601:SPC MD       -  ABB 1898                                 255 17 32.7
 JU3601:UTM  18      -  ABB 1898                                 256 33 19.4
 JU3601
 JU3601_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1686068597(NAD 83)
 JU3601
 JU3601|---------------------------------------------------------------------|
 JU3601| PID    Reference Object                     Distance      Geod. Az  |
 JU3601|                                                           dddmmss.s |
 JU3601| JU3565 ABB 1898                            APPROX. 2.1 KM 2555628.0 |
 JU3601|---------------------------------------------------------------------|
 JU3601
 JU3601                          SUPERSEDED SURVEY CONTROL
 JU3601
 JU3601  NAD 83(1986)-  39 27 46.58625(N)    075 57 59.22837(W) AD(       ) 3
 JU3601  NAD 27      -  39 27 46.19100(N)    075 58 00.43600(W) AD(       ) 3
 JU3601  USSD        -  39 27 46.56800(N)    075 58 00.27100(W) AD(       ) 3
 JU3601
 JU3601.Superseded values are not recommended for survey control.
 JU3601
 JU3601.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3601.See file dsdata.pdf to determine how the superseded data were derived.
 JU3601
 JU3601_MARKER: Z = SEE DESCRIPTION
 JU3601_SETTING: 0 = UNSPECIFIED SETTING
 JU3601_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3601
 JU3601  HISTORY     - Date     Condition        Report By
 JU3601  HISTORY     - 1898     MONUMENTED       CGS
 JU3601
 JU3601                          STATION DESCRIPTION
 JU3601
 JU3601'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (JBB)
 JU3601'ON SE SHORE OF ELK RIVER, ON ARNOLDS BAR, A SAND POINT AT THE MOUTH
 JU3601'OF CABIN JOHN CREEK.  STATION LATER IN YEAR 1898 REPORTED AS
 JU3601'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2087 ***********************************************************************
 HU2087  DESIGNATION -  CABIN 1900
 HU2087  PID         -  HU2087
 HU2087  STATE/COUNTY-  MD/DORCHESTER
 HU2087  COUNTRY     -  US
 HU2087  USGS QUAD   -  PRESTON (2016)
 HU2087
 HU2087                         *CURRENT SURVEY CONTROL
 HU2087  ______________________________________________________________________
 HU2087* NAD 83(1991) POSITION- 38 37 53.87547(N) 075 58 03.51180(W)   ADJUSTED
 HU2087* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU2087  ______________________________________________________________________
 HU2087  GEOID HEIGHT    -        -35.114 (meters)                     GEOID18
 HU2087  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 HU2087  HORZ ORDER      -  THIRD
 HU2087
 HU2087.The horizontal coordinates were established by classical geodetic methods
 HU2087.and adjusted by the National Geodetic Survey in January 1992.
 HU2087
 HU2087.The orthometric height was scaled from a topographic map.
 HU2087
 HU2087.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2087.GEOID18 height accuracy estimate available here.
 HU2087
 HU2087.Click photographs - Photos may exist for this station.
 HU2087
 HU2087.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2087
 HU2087. The following values were computed from the NAD 83(1991) position.
 HU2087
 HU2087;                    North         East     Units Scale Factor Converg.
 HU2087;SPC MD       -   107,623.170   489,885.684   MT  0.99995888   +0 38 52.6
 HU2087;SPC MD       -   353,093.68  1,607,233.28   sFT  0.99995888   +0 38 52.6
 HU2087;UTM  18      - 4,276,343.729   415,776.551   MT  0.99968735   -0 36 14.9
 HU2087
 HU2087!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2087!SPC MD       -   1.00000539  x   0.99995888  =   0.99996427
 HU2087!UTM  18      -   1.00000539  x   0.99968735  =   0.99969274
 HU2087
 HU2087:                Primary Azimuth Mark                     Grid Az
 HU2087:SPC MD       -  WHEAT                                    270 48 59.6
 HU2087:UTM  18      -  WHEAT                                    272 04 07.1
 HU2087
 HU2087_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1577676343(NAD 83)
 HU2087
 HU2087|---------------------------------------------------------------------|
 HU2087| PID    Reference Object                     Distance      Geod. Az  |
 HU2087|                                                           dddmmss.s |
 HU2087| HU2081 WHEAT                               APPROX. 1.9 KM 2712752.2 |
 HU2087|---------------------------------------------------------------------|
 HU2087
 HU2087                          SUPERSEDED SURVEY CONTROL
 HU2087
 HU2087  NAD 83(1986)-  38 37 53.87169(N)    075 58 03.52970(W) AD(       ) 3
 HU2087  NAD 27      -  38 37 53.43800(N)    075 58 04.74100(W) AD(       ) 3
 HU2087  USSD        -  38 37 53.82400(N)    075 58 04.54700(W) AD(       ) 3
 HU2087
 HU2087.Superseded values are not recommended for survey control.
 HU2087
 HU2087.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2087.See file dsdata.pdf to determine how the superseded data were derived.
 HU2087
 HU2087
 HU2087  HISTORY     - Date     Condition        Report By
 HU2087  HISTORY     - 1900     MONUMENTED       CGS
 HU2087  HISTORY     - 1902     SEE DESCRIPTION  CGS
 HU2087
 HU2087                          STATION DESCRIPTION
 HU2087
 HU2087'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 HU2087'ON EASTERN SIDE OF CHOPTANK RIVER, IN THE MARSH AT SOUTHERN SIDE
 HU2087'OF ENTRANCE TO CABIN CREEK, ABOUT 150 METERS FROM PINE WOODS
 HU2087'AND 29 PACES FROM SHORE LINE.  STATION MARKED BY NAIL IN 6-INCH
 HU2087'CEDAR POST, 18 INCHES LONG, SET WITH TOP EVEN WITH SURFACE OF
 HU2087'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4860 ***********************************************************************
 HV4860  DESIGNATION -  CABIN JOHN WSSC TANK
 HV4860  PID         -  HV4860
 HV4860  STATE/COUNTY-  MD/MONTGOMERY
 HV4860  COUNTRY     -  US
 HV4860  USGS QUAD   -  FALLS CHURCH (2019)
 HV4860
 HV4860                         *CURRENT SURVEY CONTROL
 HV4860  ______________________________________________________________________
 HV4860* NAD 83(1993) POSITION- 38 58 41.57850(N) 077 09 35.25118(W)   ADJUSTED
 HV4860  ______________________________________________________________________
 HV4860  GEOID HEIGHT    -        -31.809 (meters)                     GEOID18
 HV4860  LAPLACE CORR    -         -2.08  (seconds)                    DEFLEC18
 HV4860  HORZ ORDER      -  THIRD
 HV4860
 HV4860.The horizontal coordinates were established by classical geodetic methods
 HV4860.and adjusted by the National Geodetic Survey in November 1994.
 HV4860
 HV4860.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4860.GEOID18 height accuracy estimate available here.
 HV4860
 HV4860.Click photographs - Photos may exist for this station.
 HV4860
 HV4860.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4860
 HV4860. The following values were computed from the NAD 83(1993) position.
 HV4860
 HV4860;                    North         East     Units Scale Factor Converg.
 HV4860;SPC MD       -   145,600.113   386,154.230   MT  0.99995144   -0 06 01.0
 HV4860;SPC MD       -   477,689.70  1,266,907.67   sFT  0.99995144   -0 06 01.0
 HV4860;UTM  18      - 4,316,577.851   312,913.146   MT  1.00003101   -1 21 32.2
 HV4860
 HV4860_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1291316577(NAD 83)
 HV4860
 HV4860                          SUPERSEDED SURVEY CONTROL
 HV4860
 HV4860  NAD 83(1991)-  38 58 41.57782(N)    077 09 35.25253(W) AD(       ) 3
 HV4860  NAD 83(1986)-  38 58 41.57775(N)    077 09 35.26209(W) AD(       ) 3
 HV4860  NAD 27      -  38 58 41.18152(N)    077 09 36.32875(W) AD(       ) 3
 HV4860
 HV4860.Superseded values are not recommended for survey control.
 HV4860
 HV4860.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4860.See file dsdata.pdf to determine how the superseded data were derived.
 HV4860
 HV4860_MARKER: 53 = ELEVATED TANK
 HV4860
 HV4860  HISTORY     - Date     Condition        Report By
 HV4860  HISTORY     - 1958     FIRST OBSERVED   WSSC
 HV4860  HISTORY     - 1969     GOOD             CGS
 HV4860  HISTORY     - 19950708 GOOD             USPSQD
 HV4860
 HV4860                          STATION DESCRIPTION
 HV4860
 HV4860'DESCRIBED BY WASH SUBURB SAN COMM 1958 (JCE)
 HV4860'STATION IS LOCATED ABOUT 0.2 MILE NORTH OF THE VILLAGE OF CABIN
 HV4860'JOHN.  THE STATION IS PAINTED SILVER, HAS EIGHT LEGS, THE BOWL
 HV4860'IS OVAL, AND IS APPROXIMATELY 150 HIGH.
 HV4860'
 HV4860'THE POINT INTERSECTED WAS THE BALL FINIAL.
 HV4860'
 HV4860'TO REACH THE STATION FROM THE POST OFFICE IN THE VILLAGE OF
 HV4860'CABIN JOHN.  GO NORTH ON 77TH STREET FOR 0.1 MILE TO TOMLINSON
 HV4860'AVENUE, TURN LEFT ON TOMLINSON AVENUE AND GO 100 YARDS TO
 HV4860'TOMLINSON TERRACE, TURN RIGHT AND GO NORTHWESTERLY FOR 0.05
 HV4860'MILE AND STATION ON RIGHT.
 HV4860
 HV4860                          STATION RECOVERY (1969)
 HV4860
 HV4860'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 HV4860'THE STATION IS THE CENTER OF THE TOP OF THE CABIN JOHN WASHINGTON
 HV4860'SUBURBAN SANITATION COMMISSION TANK.  IT IS A DOUBLE-ELIPSOIDAL
 HV4860'ELEVATED TANK ABOUT 135 FEET ABOVE THE GROUND.
 HV4860'
 HV4860'THE STATION IS LOCATED 0.5 MILE NORTHWEST OF THE INTERSECTION
 HV4860'OF TOMLINSON ROAD AND MAC AUTHER BOULEVARD.
 HV4860
 HV4860                          STATION RECOVERY (1995)
 HV4860
 HV4860'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4860'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4844 ***********************************************************************
 HV4844  DESIGNATION -  CABIN PB PP 1930
 HV4844  PID         -  HV4844
 HV4844  STATE/COUNTY-  MD/MONTGOMERY
 HV4844  COUNTRY     -  US
 HV4844  USGS QUAD   -  FALLS CHURCH (2019)
 HV4844
 HV4844                         *CURRENT SURVEY CONTROL
 HV4844  ______________________________________________________________________
 HV4844* NAD 83(1993) POSITION- 38 58 24.79955(N) 077 09 09.90946(W)   ADJUSTED
 HV4844* NAVD 88 ORTHO HEIGHT -    46.    (meters)      151.    (feet) SCALED
 HV4844  ______________________________________________________________________
 HV4844  GEOID HEIGHT    -        -31.823 (meters)                     GEOID18
 HV4844  LAPLACE CORR    -         -1.97  (seconds)                    DEFLEC18
 HV4844  HORZ ORDER      -  SECOND
 HV4844
 HV4844.The horizontal coordinates were established by classical geodetic methods
 HV4844.and adjusted by the National Geodetic Survey in November 1994.
 HV4844
 HV4844.The orthometric height was scaled from a topographic map.
 HV4844
 HV4844.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4844.GEOID18 height accuracy estimate available here.
 HV4844
 HV4844.Click photographs - Photos may exist for this station.
 HV4844
 HV4844.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4844
 HV4844. The following values were computed from the NAD 83(1993) position.
 HV4844
 HV4844;                    North         East     Units Scale Factor Converg.
 HV4844;SPC MD       -   145,081.674   386,763.316   MT  0.99995130   -0 05 45.1
 HV4844;SPC MD       -   475,988.79  1,268,905.98   sFT  0.99995130   -0 05 45.1
 HV4844;SPC VA N     - 2,145,922.206 3,616,742.658   MT  0.99996765   +0 50 27.0
 HV4844;SPC VA N     - 7,040,413.10 11,865,929.87   sFT  0.99996765   +0 50 27.0
 HV4844;UTM  18      - 4,316,046.117   313,510.744   MT  1.00002826   -1 21 15.8
 HV4844
 HV4844!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4844!SPC MD       -   0.99999781  x   0.99995130  =   0.99994911
 HV4844!SPC VA N     -   0.99999781  x   0.99996765  =   0.99996546
 HV4844!UTM  18      -   0.99999781  x   1.00002826  =   1.00002607
 HV4844
 HV4844:                Primary Azimuth Mark                     Grid Az
 HV4844:SPC MD       -  BANN PB PP                               091 21 29.8
 HV4844:SPC VA N     -  BANN PB PP                               090 25 17.7
 HV4844:UTM  18      -  BANN PB PP                               092 37 00.5
 HV4844
 HV4844_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1351016046(NAD 83)
 HV4844
 HV4844|---------------------------------------------------------------------|
 HV4844| PID    Reference Object                     Distance      Geod. Az  |
 HV4844|                                                           dddmmss.s |
 HV4844| HV4840 BANN PB PP                          APPROX. 1.3 KM 0911544.7 |
 HV4844|---------------------------------------------------------------------|
 HV4844
 HV4844                          SUPERSEDED SURVEY CONTROL
 HV4844
 HV4844  NAD 83(1991)-  38 58 24.79873(N)    077 09 09.91106(W) AD(       ) 2
 HV4844  NAD 83(1986)-  38 58 24.79855(N)    077 09 09.92048(W) AD(       ) 2
 HV4844  NAD 27      -  38 58 24.40200(N)    077 09 10.99300(W) AD(       ) 2
 HV4844
 HV4844.Superseded values are not recommended for survey control.
 HV4844
 HV4844.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4844.See file dsdata.pdf to determine how the superseded data were derived.
 HV4844
 HV4844_MARKER: N = NAIL
 HV4844_SETTING: 0 = UNSPECIFIED SETTING
 HV4844_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4844
 HV4844  HISTORY     - Date     Condition        Report By
 HV4844  HISTORY     - 1930     MONUMENTED       PBPP
 HV4844
 HV4844                          STATION DESCRIPTION
 HV4844
 HV4844'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV4844'STATION IS ON MARYLAND SIDE OF POTOMAC RIVER IN MONTGOMERY
 HV4844'COUNTY.  THIS STATION IS LOCATED ON TOP OF CABIN JOHN SCHOOL
 HV4844'WHICH IS ON NE CORNER OF CONDUIT ROAD AND FIRST STREET, IN
 HV4844'SETTLEMENT OF CABIN JOHN, MARYLAND.  THIS STATION IS REFERENCED
 HV4844'ON GROUND BY ANGLES FROM STATION TAVERN AND CHAMB ON CONDUIT
 HV4844'ROAD.
 HV4844'
 HV4844'THIS STATION IS MARKED WITH SMALL NAIL IN THE TIN ROOF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5680 ***********************************************************************
 JV5680  DESIGNATION -  CABIN USE 1916
 JV5680  PID         -  JV5680
 JV5680  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5680  COUNTRY     -  US
 JV5680  USGS QUAD   -  CURTIS BAY (2016)
 JV5680
 JV5680                         *CURRENT SURVEY CONTROL
 JV5680  ______________________________________________________________________
 JV5680* NAD 83(1991) POSITION- 39 12 50.29287(N) 076 34 52.47326(W)   ADJUSTED
 JV5680* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5680  ______________________________________________________________________
 JV5680  GEOID HEIGHT    -        -32.900 (meters)                     GEOID18
 JV5680  LAPLACE CORR    -         -4.51  (seconds)                    DEFLEC18
 JV5680  HORZ ORDER      -  THIRD
 JV5680
 JV5680.The horizontal coordinates were established by classical geodetic methods
 JV5680.and adjusted by the National Geodetic Survey in January 1992.
 JV5680
 JV5680.The orthometric height was scaled from a topographic map.
 JV5680
 JV5680.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5680.GEOID18 height accuracy estimate available here.
 JV5680
 JV5680.Click photographs - Photos may exist for this station.
 JV5680
 JV5680.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5680
 JV5680. The following values were computed from the NAD 83(1991) position.
 JV5680
 JV5680;                    North         East     Units Scale Factor Converg.
 JV5680;SPC MD       -   171,842.617   436,164.627   MT  0.99996722   +0 15 46.2
 JV5680;SPC MD       -   563,786.99  1,430,983.45   sFT  0.99996722   +0 15 46.2
 JV5680;UTM  18      - 4,341,712.625   363,487.267   MT  0.99982946   -0 59 59.4
 JV5680
 JV5680!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5680!SPC MD       -   1.00000520  x   0.99996722  =   0.99997242
 JV5680!UTM  18      -   1.00000520  x   0.99982946  =   0.99983466
 JV5680
 JV5680:                Primary Azimuth Mark                     Grid Az
 JV5680:SPC MD       -  WAGNERS CHURCH SPIRE                     028 28 22.5
 JV5680:UTM  18      -  WAGNERS CHURCH SPIRE                     029 44 08.1
 JV5680
 JV5680_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6348741712(NAD 83)
 JV5680
 JV5680|---------------------------------------------------------------------|
 JV5680| PID    Reference Object                     Distance      Geod. Az  |
 JV5680|                                                           dddmmss.s |
 JV5680| JV5720 WAGNERS CHURCH SPIRE                APPROX. 2.2 KM 0284408.7 |
 JV5680| JV5711 FLOOD HB                            295.260 METERS 04832     |
 JV5680|---------------------------------------------------------------------|
 JV5680
 JV5680                          SUPERSEDED SURVEY CONTROL
 JV5680
 JV5680  NAD 83(1986)-  39 12 50.28919(N)    076 34 52.48262(W) AD(       ) 3
 JV5680  NAD 27      -  39 12 49.90000(N)    076 34 53.60700(W) AD(       ) 3
 JV5680  USSD        -  39 12 50.26400(N)    076 34 53.44900(W) AD(       ) 3
 JV5680
 JV5680.Superseded values are not recommended for survey control.
 JV5680
 JV5680.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5680.See file dsdata.pdf to determine how the superseded data were derived.
 JV5680
 JV5680_MARKER: DD = SURVEY DISK
 JV5680_SETTING: 0 = UNSPECIFIED SETTING
 JV5680_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5680
 JV5680  HISTORY     - Date     Condition        Report By
 JV5680  HISTORY     - 1916     MONUMENTED       USACE
 JV5680
 JV5680                          STATION DESCRIPTION
 JV5680
 JV5680'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1916
 JV5680'W OF CURTIS CREEK, AT THE S SIDE OF CABIN BRANCH, 2.19 METERS
 JV5680'(7.2 FEET) SE FROM THE NE CORNER OF A BUILDING, AND 1.98 METERS
 JV5680'(6.5 FEET) NW FROM THE MOST NORTHERLY CORNER OF ANOTHER
 JV5680'BUILDING.  THE STATION IS MARKED BY A CONCRETE MONUMENT CENTERED
 JV5680'BY A STANDARD U.S.E. BRONZE MARKER.
 JV5680'
 JV5680'THIS STATION REPORTED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6717 ***********************************************************************
 HV6717  DESIGNATION -  CABLE MSFC 1908
 HV6717  PID         -  HV6717
 HV6717  STATE/COUNTY-  MD/ST MARYS
 HV6717  COUNTRY     -  US
 HV6717  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6717
 HV6717                         *CURRENT SURVEY CONTROL
 HV6717  ______________________________________________________________________
 HV6717* NAD 83(1991) POSITION- 38 19 20.19363(N) 076 29 25.12016(W)   ADJUSTED
 HV6717* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6717  ______________________________________________________________________
 HV6717  GEOID HEIGHT    -        -34.299 (meters)                     GEOID18
 HV6717  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 HV6717  HORZ ORDER      -  THIRD
 HV6717
 HV6717.The horizontal coordinates were established by classical geodetic methods
 HV6717.and adjusted by the National Geodetic Survey in January 1992.
 HV6717
 HV6717.The orthometric height was scaled from a topographic map.
 HV6717
 HV6717.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6717.GEOID18 height accuracy estimate available here.
 HV6717
 HV6717.Click photographs - Photos may exist for this station.
 HV6717
 HV6717.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6717
 HV6717. The following values were computed from the NAD 83(1991) position.
 HV6717
 HV6717;                    North         East     Units Scale Factor Converg.
 HV6717;SPC MD       -    72,899.964   444,570.203   MT  0.99999620   +0 19 11.6
 HV6717;SPC MD       -   239,172.63  1,458,560.74   sFT  0.99999620   +0 19 11.6
 HV6717;UTM  18      - 4,242,623.918   369,725.918   MT  0.99980901   -0 55 27.3
 HV6717
 HV6717!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6717!SPC MD       -   1.00000511  x   0.99999620  =   1.00000131
 HV6717!UTM  18      -   1.00000511  x   0.99980901  =   0.99981412
 HV6717
 HV6717_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6972542623(NAD 83)
 HV6717
 HV6717                          SUPERSEDED SURVEY CONTROL
 HV6717
 HV6717  NAD 83(1986)-  38 19 20.19359(N)    076 29 25.13436(W) AD(       ) 3
 HV6717  NAD 27      -  38 19 19.74200(N)    076 29 26.28100(W) AD(       ) 3
 HV6717  USSD        -  38 19 20.11700(N)    076 29 26.03900(W) AD(       ) 3
 HV6717
 HV6717.Superseded values are not recommended for survey control.
 HV6717
 HV6717.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6717.See file dsdata.pdf to determine how the superseded data were derived.
 HV6717
 HV6717_MARKER: H = DRILL HOLE
 HV6717_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6717_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6717+STABILITY: SURFACE MOTION
 HV6717
 HV6717  HISTORY     - Date     Condition        Report By
 HV6717  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6717  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6717
 HV6717                          STATION DESCRIPTION
 HV6717
 HV6717'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6717'STATION IS ON THE SW SHORE OF PATUXENT RIVER, ON E SIDE OF
 HV6717'ENTRANCE TO KINGS CREEK, AND ABOUT 3/4 MILE W OF TOWN POINT, ON
 HV6717'PASTURE LAND NEAR THE END OF HIGH LAND, AT THE BEGINNING OF A
 HV6717'LONG, LOW PENINSULA WHICH ALMOST CLOSES THE MOUTH OF KINGS CREEK,
 HV6717'ABOUT 30 FEET ABOVE HIGH-WATER MARK, ABOUT 20 YARDS S OF EDGE OF
 HV6717'BANK ON RIVER SIDE, ABOUT 15 YARDS ENE OF EDGE OF BANK ON CREEK
 HV6717'SIDE, 38 YARDS SE OF EXTREME EDGE OF TOP OF BANK, AND 30 YARDS
 HV6717'W OF A PERSIMMON TREE.  STATION MARK IS MARKED BY A HOLE IN
 HV6717'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6717'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV6717'WITH TOP BURIED 10 INCHES BELOW THE SURFACE OF GROUND.  THE
 HV6717'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6717'POST.  DISTANCES AND AZIMUTHS FROM THE STATION TO VARIOUS POINTS
 HV6717'OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 18-INCH TREE,
 HV6717'19.24 METERS (63.1 FEET), 34 DEG 39 MIN.  NAIL IN BLAZE IN
 HV6717'3-INCH RED CEDAR TREE, 16.80 METERS (55.1 FEET), 91 DEG 42
 HV6717'MIN.  NAIL IN BLAZE IN PERSIMMON TREE, 26.22 METERS (86.0
 HV6717'FEET), 139 DEG 09 MIN.  RIGHT CHIMNEY OF FENNER LEES HOUSE, 3/8
 HV6717'MILE, 139 DEG 31 MIN.  LEFT CHIMNEY OF HOUSE, 1/2 MILE, 157
 HV6717'DEG 41 MIN.  LEFT CHIMNEY OF MARBURGERS HOUSE NEAR POINT
 HV6717'PATIENCE, 3/4 MILE, 218 DEG 42 MIN.  LEFT CHIMNEY OF
 HV6717'JUDGE CRANES HOUSE, 1/2 MILE, 271 DEG 01 MIN.
 HV6717
 HV6717                          STATION RECOVERY (1943)
 HV6717
 HV6717'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6717'THE LOCALITY WAS VISITED AND A THOROUGH SEARCH WAS MADE BUT THE
 HV6717'STATION WAS NOT RECOVERED.  IT WAS FOUND THROUGH LOCAL INFORMATION
 HV6717'THAT A CONSIDERABLE AMOUNT OF EROSION HAS OCCURRED AND IT IS
 HV6717'THOUGHT THAT THE STATION HAS BEEN WASHED AWAY.
 HV6717'
 HV6717'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7128 ***********************************************************************
 HV7128  DESIGNATION -  CADLE
 HV7128  PID         -  HV7128
 HV7128  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7128  COUNTRY     -  US
 HV7128  USGS QUAD   -  SOUTH RIVER (2016)
 HV7128
 HV7128                         *CURRENT SURVEY CONTROL
 HV7128  ______________________________________________________________________
 HV7128* NAD 83(1993) POSITION- 38 52 38.10324(N) 076 30 59.45051(W)   ADJUSTED
 HV7128* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7128  ______________________________________________________________________
 HV7128  GEOID HEIGHT    -        -33.452 (meters)                     GEOID18
 HV7128  LAPLACE CORR    -         -3.67  (seconds)                    DEFLEC18
 HV7128  HORZ ORDER      -  THIRD
 HV7128
 HV7128.The horizontal coordinates were established by classical geodetic methods
 HV7128.and adjusted by the National Geodetic Survey in November 1994.
 HV7128
 HV7128.The orthometric height was scaled from a topographic map.
 HV7128
 HV7128.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7128.GEOID18 height accuracy estimate available here.
 HV7128
 HV7128.Click photographs - Photos may exist for this station.
 HV7128
 HV7128.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7128
 HV7128. The following values were computed from the NAD 83(1993) position.
 HV7128
 HV7128;                    North         East     Units Scale Factor Converg.
 HV7128;SPC MD       -   134,491.070   441,952.620   MT  0.99994985   +0 18 12.4
 HV7128;SPC MD       -   441,242.79  1,449,972.89   sFT  0.99994985   +0 18 12.4
 HV7128;UTM  18      - 4,304,247.959   368,452.505   MT  0.99981309   -0 57 07.1
 HV7128
 HV7128!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7128!SPC MD       -   1.00000513  x   0.99994985  =   0.99995498
 HV7128!UTM  18      -   1.00000513  x   0.99981309  =   0.99981822
 HV7128
 HV7128:                Primary Azimuth Mark                     Grid Az
 HV7128:SPC MD       -  LIKES                                    154 10 27.0
 HV7128:UTM  18      -  LIKES                                    155 25 46.5
 HV7128
 HV7128_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6845204247(NAD 83)
 HV7128
 HV7128|---------------------------------------------------------------------|
 HV7128| PID    Reference Object                     Distance      Geod. Az  |
 HV7128|                                                           dddmmss.s |
 HV7128| CX2156 CADLE RM 1                           14.848 METERS 12807     |
 HV7128| HV7205 LIKES                               APPROX. 0.9 KM 1542839.4 |
 HV7128| HV7161 CAMP LETTS TANK                     APPROX. 1.8 KM 3221856.1 |
 HV7128| HV7127 CADLE CREEK FLAGPOLE                APPROX. 0.5 KM 3531749.0 |
 HV7128|---------------------------------------------------------------------|
 HV7128
 HV7128                          SUPERSEDED SURVEY CONTROL
 HV7128
 HV7128  NAD 83(1986)-  38 52 38.09955(N)    076 30 59.46208(W) AD(       ) 3
 HV7128  NAD 27      -  38 52 37.69000(N)    076 31 00.60600(W) AD(       ) 3
 HV7128
 HV7128.Superseded values are not recommended for survey control.
 HV7128
 HV7128.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7128.See file dsdata.pdf to determine how the superseded data were derived.
 HV7128
 HV7128_MARKER: DS = TRIANGULATION STATION DISK
 HV7128_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7128
 HV7128  HISTORY     - Date     Condition        Report By
 HV7128  HISTORY     - 1933     MONUMENTED       CGS
 HV7128  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV7128  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV7128
 HV7128                          STATION DESCRIPTION
 HV7128
 HV7128'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7128'STATION IS ON THE E SIDE OF RHODE RIVER AT THE S ENTRANCE TO CADLE
 HV7128'CREEK AND ABOUT 1/2 MILE N OF DUTCHMAN POINT.  THE STATION IS ON A
 HV7128'LOW SAND SPIT, 15 FEET FROM THE HIGH-WATER LINE ON THE CADLE CREEK
 HV7128'SIDE, 36 FEET FROM HIGH-WATER LINE ON THE RHODE RIVER SIDE, 60
 HV7128'FEET FROM THE EXTREME END OF THE POINT AND ABOUT 1 FOOT ABOVE HIGH
 HV7128'WATER.
 HV7128'
 HV7128'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7128'CONCRETE AS DESCRIBED.
 HV7128
 HV7128                          STATION RECOVERY (1961)
 HV7128
 HV7128'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV7128'STATION AND REFERENCE MARK WERE NOT RECOVERED AND ARE CONSIDERED
 HV7128'LOST AS THE RIVER BANK IN THE IMMEDIATE VICINITY HAS ERODED
 HV7128'CONSIDERABLY.  A NEW STATION CADLE 2 1961 AND TWO NEW REFERENCE
 HV7128'MARKS WERE ESTABLISHED AT THIS TIME.
 HV7128
 HV7128                          STATION RECOVERY (2003)
 HV7128
 HV7128'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7128'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7129 ***********************************************************************
 HV7129  DESIGNATION -  CADLE 2
 HV7129  PID         -  HV7129
 HV7129  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7129  COUNTRY     -  US
 HV7129  USGS QUAD   -  SOUTH RIVER (2016)
 HV7129
 HV7129                         *CURRENT SURVEY CONTROL
 HV7129  ______________________________________________________________________
 HV7129* NAD 83(1993) POSITION- 38 52 37.60029(N) 076 30 58.52147(W)   NO CHECK
 HV7129* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7129  ______________________________________________________________________
 HV7129  GEOID HEIGHT    -        -33.452 (meters)                     GEOID18
 HV7129  LAPLACE CORR    -         -3.66  (seconds)                    DEFLEC18
 HV7129  HORZ ORDER      -  THIRD
 HV7129
 HV7129.The horizontal coordinates were established by classical geodetic methods
 HV7129.and adjusted by the National Geodetic Survey in November 1994.
 HV7129
 HV7129.No horizontal observational check was made to the station.
 HV7129
 HV7129.The orthometric height was scaled from a topographic map.
 HV7129
 HV7129.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7129.GEOID18 height accuracy estimate available here.
 HV7129
 HV7129.Click photographs - Photos may exist for this station.
 HV7129
 HV7129.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7129
 HV7129. The following values were computed from the NAD 83(1993) position.
 HV7129
 HV7129;                    North         East     Units Scale Factor Converg.
 HV7129;SPC MD       -   134,475.680   441,975.095   MT  0.99994985   +0 18 13.0
 HV7129;SPC MD       -   441,192.29  1,450,046.62   sFT  0.99994985   +0 18 13.0
 HV7129;UTM  18      - 4,304,232.082   368,474.634   MT  0.99981302   -0 57 06.5
 HV7129
 HV7129!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7129!SPC MD       -   1.00000513  x   0.99994985  =   0.99995498
 HV7129!UTM  18      -   1.00000513  x   0.99981302  =   0.99981815
 HV7129
 HV7129:                Primary Azimuth Mark                     Grid Az
 HV7129:SPC MD       -  CARR                                     334 59 54.3
 HV7129:UTM  18      -  CARR                                     336 15 13.8
 HV7129
 HV7129_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6847404232(NAD 83)
 HV7129
 HV7129|---------------------------------------------------------------------|
 HV7129| PID    Reference Object                     Distance      Geod. Az  |
 HV7129|                                                           dddmmss.s |
 HV7129| CX2157 CADLE 2 RM 1                         14.195 METERS 05607     |
 HV7129| CX2158 CADLE 2 RM 2                         12.450 METERS 15342     |
 HV7129| HV7122 CARR                                APPROX. 1.4 KM 3351807.3 |
 HV7129|---------------------------------------------------------------------|
 HV7129
 HV7129                          SUPERSEDED SURVEY CONTROL
 HV7129
 HV7129  NAD 83(1986)-  38 52 37.59660(N)    076 30 58.53304(W) AD(       ) 3
 HV7129  NAD 27      -  38 52 37.19000(N)    076 30 59.67800(W) AD(       ) 3
 HV7129
 HV7129.Superseded values are not recommended for survey control.
 HV7129
 HV7129.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7129.See file dsdata.pdf to determine how the superseded data were derived.
 HV7129
 HV7129_MARKER: DS = TRIANGULATION STATION DISK
 HV7129_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7129
 HV7129  HISTORY     - Date     Condition        Report By
 HV7129  HISTORY     - 1961     MONUMENTED       CGS
 HV7129  HISTORY     - 1973     MARK NOT FOUND   MDDNR
 HV7129  HISTORY     - 1974     MARK NOT FOUND   NGS
 HV7129  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV7129
 HV7129                          STATION DESCRIPTION
 HV7129
 HV7129'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV7129'STATION IS LOCATED ON THE E SIDE OF RHODE RIVER AT THE S ENTRANCE
 HV7129'TO CADLE CREEK.  ON THE PROPERTY OF T.E. COLLISON, ON HIGH GROUND
 HV7129'JUST E OF A SAND SPIT.
 HV7129'
 HV7129'STATION IS 41.7 FEET N OF THE NW CORNER OF HOUSE, 45.0 FEET NW OF
 HV7129'THE NE CORNER OF HOUSE, 49.0 FEET SW OF THE CENTER OF A WELL WITH
 HV7129'CONCRETE COVER, 17 FEET E OF THE EDGE OF BLUFF AND 4.6 FEET SE OF
 HV7129'A 30-INCH PINE OAK.  MARKED BY A STANDARD TRIANGULATION STATION
 HV7129'DISK STAMPED CADLE 2 1961, SET IN THE TOP OF A 8-INCH ROUND
 HV7129'CONCRETE MONUMENT AND IS FLUSH WITH THE SURFACE OF THE LAWN.
 HV7129'
 HV7129'REFERENCE MARK NO. 1 IS NE OF THE STATION AT THE SW EDGE OF THE
 HV7129'CONCRETE COVER OF THE WELL.  IT IS A STANDARD REFERENCE MARK DISK
 HV7129'STAMPED CADLE 2 NO 1 1961 SET IN THE TOP OF A 8-INCH ROUND
 HV7129'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV7129'
 HV7129'REFERENCE MARK NO. 2 IS S OF THE STATION, 6 INCHES N OF THE NW
 HV7129'CORNER OF THE HOUSE.  IT IS A STANDARD REFERENCE MARK DISK STAMPED
 HV7129'CADLE 2 NO 2 1961 SET IN THE TOP OF A 8-INCH ROUND CONCRETE
 HV7129'MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV7129
 HV7129                          STATION RECOVERY (1973)
 HV7129
 HV7129'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV7129'CADLE 2 1961 DESTROYED.
 HV7129'
 HV7129'CADLE 2 1 1961 DESTROYED.
 HV7129'
 HV7129'CADLE 2 2 1961 DESTROYED.
 HV7129'
 HV7129'OWNER STATED MARKS DESTROYED WHEN NEW HOUSE WAS BUILT.
 HV7129
 HV7129                          STATION RECOVERY (1974)
 HV7129
 HV7129'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV7129'A SEARCH WAS MADE FOR THE STATION BUT NO MARKS WERE FOUND.  THE
 HV7129'ENTIRE AREA HAS BEEN RE-CONSTRUCTED AND NO TRACE OF THE STATION
 HV7129'WAS FOUND.  THE PROPERTY OWNER STATED THAT THE MARKS WERE UNDER
 HV7129'HIS NEW HOUSE.  AFTER ALL CONSTRUCTION IS COMPLETED IN THE AREA, A
 HV7129'FURTHER SEARCH WILL BE MADE.
 HV7129'
 HV7129'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 1/2 MILE W OF
 HV7129'BEVERLY BEACH.
 HV7129
 HV7129                          STATION RECOVERY (2003)
 HV7129
 HV7129'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7129'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7127 ***********************************************************************
 HV7127  DESIGNATION -  CADLE CREEK FLAGPOLE
 HV7127  PID         -  HV7127
 HV7127  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7127  COUNTRY     -  US
 HV7127  USGS QUAD   -  SOUTH RIVER (2016)
 HV7127
 HV7127                         *CURRENT SURVEY CONTROL
 HV7127  ______________________________________________________________________
 HV7127* NAD 83(1991) POSITION- 38 52 55.13155(N) 076 31 02.01098(W)   ADJUSTED
 HV7127  ______________________________________________________________________
 HV7127  GEOID HEIGHT    -        -33.443 (meters)                     GEOID18
 HV7127  LAPLACE CORR    -         -3.69  (seconds)                    DEFLEC18
 HV7127  HORZ ORDER      -  THIRD
 HV7127
 HV7127.The horizontal coordinates were established by classical geodetic methods
 HV7127.and adjusted by the National Geodetic Survey in January 1992.
 HV7127
 HV7127.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7127.GEOID18 height accuracy estimate available here.
 HV7127
 HV7127.Click photographs - Photos may exist for this station.
 HV7127
 HV7127.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7127
 HV7127. The following values were computed from the NAD 83(1991) position.
 HV7127
 HV7127;                    North         East     Units Scale Factor Converg.
 HV7127;SPC MD       -   135,015.812   441,888.129   MT  0.99994985   +0 18 10.8
 HV7127;SPC MD       -   442,964.38  1,449,761.30   sFT  0.99994985   +0 18 10.8
 HV7127;UTM  18      - 4,304,773.916   368,399.534   MT  0.99981326   -0 57 09.1
 HV7127
 HV7127_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6839904773(NAD 83)
 HV7127
 HV7127                          SUPERSEDED SURVEY CONTROL
 HV7127
 HV7127  NAD 83(1986)-  38 52 55.12786(N)    076 31 02.02252(W) AD(       ) 3
 HV7127  NAD 27      -  38 52 54.71900(N)    076 31 03.16500(W) AD(       ) 3
 HV7127
 HV7127.Superseded values are not recommended for survey control.
 HV7127
 HV7127.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7127.See file dsdata.pdf to determine how the superseded data were derived.
 HV7127
 HV7127_MARKER: 62 = FLAGPOLE
 HV7127
 HV7127  HISTORY     - Date     Condition        Report By
 HV7127  HISTORY     - 1933     FIRST OBSERVED   CGS
 HV7127
 HV7127                          STATION DESCRIPTION
 HV7127
 HV7127'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7127'ON THE NORTHERN SIDE OF RHODE RIVER, W OF CADLE CREEK, ON THE
 HV7127'CENTER OF SQUARE BUILDING, WITH PYRAMID-SHAPED ROOF (HIPPED ROOF).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5299 ***********************************************************************
 JV5299  DESIGNATION -  CADWALADER 1898
 JV5299  PID         -  JV5299
 JV5299  STATE/COUNTY-  MD/HARFORD
 JV5299  COUNTRY     -  US
 JV5299  USGS QUAD   -  EDGEWOOD (2016)
 JV5299
 JV5299                         *CURRENT SURVEY CONTROL
 JV5299  ______________________________________________________________________
 JV5299* NAD 83(1991) POSITION- 39 23 02.27699(N) 076 18 18.88891(W)   ADJUSTED
 JV5299* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 JV5299  ______________________________________________________________________
 JV5299  GEOID HEIGHT    -        -33.162 (meters)                     GEOID18
 JV5299  LAPLACE CORR    -         -2.47  (seconds)                    DEFLEC18
 JV5299  HORZ ORDER      -  THIRD
 JV5299
 JV5299.The horizontal coordinates were established by classical geodetic methods
 JV5299.and adjusted by the National Geodetic Survey in January 1992.
 JV5299
 JV5299.The orthometric height was scaled from a topographic map.
 JV5299
 JV5299.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5299.GEOID18 height accuracy estimate available here.
 JV5299
 JV5299.Click photographs - Photos may exist for this station.
 JV5299
 JV5299.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5299
 JV5299. The following values were computed from the NAD 83(1991) position.
 JV5299
 JV5299;                    North         East     Units Scale Factor Converg.
 JV5299;SPC MD       -   190,860.126   459,856.099   MT  0.99998912   +0 26 09.8
 JV5299;SPC MD       -   626,180.26  1,508,711.22   sFT  0.99998912   +0 26 09.8
 JV5299;UTM  18      - 4,360,199.615   387,587.871   MT  0.99975558   -0 49 41.8
 JV5299
 JV5299!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5299!SPC MD       -   1.00000446  x   0.99998912  =   0.99999358
 JV5299!UTM  18      -   1.00000446  x   0.99975558  =   0.99976004
 JV5299
 JV5299:                Primary Azimuth Mark                     Grid Az
 JV5299:SPC MD       -  MAXWELLS POINT 2 1898                    206 09 35.0
 JV5299:UTM  18      -  MAXWELLS POINT 2 1898                    207 25 26.6
 JV5299
 JV5299_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8758760199(NAD 83)
 JV5299
 JV5299|---------------------------------------------------------------------|
 JV5299| PID    Reference Object                     Distance      Geod. Az  |
 JV5299|                                                           dddmmss.s |
 JV5299| JV5349 MAXWELLS BARN CUPOLA                APPROX. 3.1 KM 2011421.8 |
 JV5299| JV5361 MAXWELLS POINT 2 1898               APPROX. 3.4 KM 2063544.8 |
 JV5299| JV5336 GRACES QUARTER HOUSE CHIMNEY        APPROX. 5.0 KM 2181518.0 |
 JV5299| JV5334 GRACES QUARTER CUPOLA               APPROX. 4.9 KM 2194137.9 |
 JV5299| JV5329 PETRYS HOUSE WEST CHIMNEY           APPROX. 3.6 KM 2514613.9 |
 JV5299| JV5427 FOX HILL HOUSE CHIMNEY              APPROX. 9.3 KM 2783430.9 |
 JV5299| JV5322 RAILROAD DRAW                       APPROX. 3.6 KM 2790933.4 |
 JV5299| JV5421 TAYLOR MOUNT BARN CUPOLA            APPROX. 6.1 KM 2812222.9 |
 JV5299| JV5314 HYDROGRAPHIC SIGNAL                 APPROX. 0.7 KM 3103242.9 |
 JV5299| JV5311 REMBOLTS HOUSE WEST CHIMNEY         412.645 METERS 3470530.5 |
 JV5299| JV5312 REMBOLTS HOUSE EAST CHIMNEY         409.496 METERS 3483814.9 |
 JV5299|---------------------------------------------------------------------|
 JV5299
 JV5299                          SUPERSEDED SURVEY CONTROL
 JV5299
 JV5299  NAD 83(1986)-  39 23 02.27133(N)    076 18 18.89606(W) AD(       ) 3
 JV5299  NAD 27      -  39 23 01.89400(N)    076 18 20.04700(W) AD(       ) 3
 JV5299  USSD        -  39 23 02.23800(N)    076 18 19.89700(W) AD(       ) 3
 JV5299
 JV5299.Superseded values are not recommended for survey control.
 JV5299
 JV5299.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5299.See file dsdata.pdf to determine how the superseded data were derived.
 JV5299
 JV5299_MARKER: N = NAIL
 JV5299_SETTING: 0 = UNSPECIFIED SETTING
 JV5299_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5299
 JV5299  HISTORY     - Date     Condition        Report By
 JV5299  HISTORY     - 1898     MONUMENTED       CGS
 JV5299  HISTORY     - 1934     MARK NOT FOUND   CGS
 JV5299
 JV5299                          STATION DESCRIPTION
 JV5299
 JV5299'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JV5299'ON E SIDE OF GUNPOWDER RIVER, 2 MILES BELOW RAILROAD BRIDGE, ON
 JV5299'PROPERTY OF A MR. CADWALADER.  STATION 28 FEET BACK FROM 15-FOOT
 JV5299'BLUFF, WHILE ABOUT 100 YARDS BACK FROM STATION THE GROUND RISES 8
 JV5299'FEET.  A LOCUST TREE, 27 INCHES IN DIAMETER, IS ON THE EDGE OF THE
 JV5299'BANK, DISTANT 70.8 FEET, N 45 DEG W (MAG.), AND REMBOLDTS HOUSE
 JV5299'BEARS ABOUT N BY W.  STATION MARKED BY TWO 4-INCH DRAIN TILES SET
 JV5299'ONE ABOVE THE OTHER AND A NAIL IN A PINE STUB EXTENDING TO THE
 JV5299'SURFACE OF THE GROUND.
 JV5299
 JV5299                          STATION RECOVERY (1934)
 JV5299
 JV5299'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5299'THE STATION COULD NOT BE RECOVERED.  THE SITE IS NOW ON THE U.S.
 JV5299'RESERVATION, FORT HOYLE.  THE LOCUST TREE AS DESCRIBED, WAS
 JV5299'DESTROYED BY LIGHTNING SEVERAL YEARS AGO.  REMBOLDTS HOUSE STILL
 JV5299'STANDS.  IT IS RECOMMENDED THAT THE STATION BE REPORTED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6861 ***********************************************************************
 HV6861  DESIGNATION -  CAFFEE
 HV6861  PID         -  HV6861
 HV6861  STATE/COUNTY-  MD/ST MARYS
 HV6861  COUNTRY     -  US
 HV6861  USGS QUAD   -  PINEY POINT (2016)
 HV6861
 HV6861                         *CURRENT SURVEY CONTROL
 HV6861  ______________________________________________________________________
 HV6861* NAD 83(1993) POSITION- 38 12 20.04462(N) 076 34 37.78597(W)   ADJUSTED
 HV6861* NAVD 88 ORTHO HEIGHT -     2.8   (meters)        9.    (feet) VERTCON3
 HV6861  ______________________________________________________________________
 HV6861  GEOID HEIGHT    -        -34.243 (meters)                     GEOID18
 HV6861  LAPLACE CORR    -         -6.47  (seconds)                    DEFLEC18
 HV6861  HORZ ORDER      -  SECOND
 HV6861
 HV6861.The horizontal coordinates were established by classical geodetic methods
 HV6861.and adjusted by the National Geodetic Survey in November 1994.
 HV6861
 HV6861.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV6861.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV6861
 HV6861.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6861.GEOID18 height accuracy estimate available here.
 HV6861
 HV6861.Click photographs - Photos may exist for this station.
 HV6861
 HV6861.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6861
 HV6861. The following values were computed from the NAD 83(1993) position.
 HV6861
 HV6861;                    North         East     Units Scale Factor Converg.
 HV6861;SPC MD       -    59,906.459   437,035.450   MT  1.00001777   +0 15 55.4
 HV6861;SPC MD       -   196,543.11  1,433,840.47   sFT  1.00001777   +0 15 55.4
 HV6861;SPC VA N     - 2,061,580.463 3,668,398.316   MT  0.99997407   +1 12 00.3
 HV6861;SPC VA N     - 6,763,701.90 12,035,403.48   sFT  0.99997407   +1 12 00.3
 HV6861;UTM  18      - 4,229,799.236   361,912.609   MT  0.99983484   -0 58 32.2
 HV6861
 HV6861!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6861!SPC MD       -   1.00000493  x   1.00001777  =   1.00002270
 HV6861!SPC VA N     -   1.00000493  x   0.99997407  =   0.99997900
 HV6861!UTM  18      -   1.00000493  x   0.99983484  =   0.99983977
 HV6861
 HV6861:                Primary Azimuth Mark                     Grid Az
 HV6861:SPC MD       -  RAGGED POINT LIGHTHOUSE                  200 11 22.1
 HV6861:SPC VA N     -  RAGGED POINT LIGHTHOUSE                  199 15 17.2
 HV6861:UTM  18      -  RAGGED POINT LIGHTHOUSE                  201 25 49.7
 HV6861
 HV6861_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6191229799(NAD 83)
 HV6861
 HV6861|---------------------------------------------------------------------|
 HV6861| PID    Reference Object                     Distance      Geod. Az  |
 HV6861|                                                           dddmmss.s |
 HV6861| CX2159 CAFFEE RM 1                          16.088 METERS 03553     |
 HV6861| CX2160 CAFFEE RM 2                          21.857 METERS 10600     |
 HV6861| HV6875 RAGGED POINT LIGHTHOUSE             APPROX. 6.1 KM 2002717.5 |
 HV6861| HV9244 RAGGED POINT LT REBUILT             APPROX. 6.1 KM 2002713.1 |
 HV6861| CX2161 CAFFEE RM 3                                        3050939.2 |
 HV6861|---------------------------------------------------------------------|
 HV6861
 HV6861                          SUPERSEDED SURVEY CONTROL
 HV6861
 HV6861  NAD 83(1991)-  38 12 20.04336(N)    076 34 37.79037(W) AD(       ) 2
 HV6861  NAD 83(1986)-  38 12 20.04441(N)    076 34 37.80208(W) AD(       ) 2
 HV6861  NAD 27      -  38 12 19.58490(N)    076 34 38.95900(W) AD(       ) 2
 HV6861  USSD        -  38 12 20.11000(N)    076 34 38.79000(W) AD(       ) 3
 HV6861  NGVD 29 (07/19/86)    3.1    (m)           10.     (f) VERT ANG       
 HV6861
 HV6861.Superseded values are not recommended for survey control.
 HV6861
 HV6861.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6861.See file dsdata.pdf to determine how the superseded data were derived.
 HV6861
 HV6861_MARKER: DD = SURVEY DISK
 HV6861_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6861_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6861
 HV6861  HISTORY     - Date     Condition        Report By
 HV6861  HISTORY     - 1919     MONUMENTED       USN
 HV6861  HISTORY     - 1929     GOOD             CGS
 HV6861  HISTORY     - 1934     GOOD             CGS
 HV6861  HISTORY     - 1937     GOOD             USN
 HV6861  HISTORY     - 1942     GOOD             CGS
 HV6861  HISTORY     - 1958     GOOD             CGS
 HV6861  HISTORY     - 1959     GOOD             CGS
 HV6861  HISTORY     - 1968     GOOD             CGS
 HV6861  HISTORY     - 1974     GOOD             NGS
 HV6861
 HV6861                          STATION DESCRIPTION
 HV6861
 HV6861'DESCRIBED BY US NAVY 1919 (PMT)
 HV6861'NE SIDE OF POTOMAC RIVER, ABOUT 300 METERS NW OF ENTRANCE TO BLAKE
 HV6861'CREEK, AND NEAR THE COUNTY LANDING.  IT IS ABOUT 30 METERS SE OF A
 HV6861'FENCE AND ABOUT 50 METERS NW OF THE END OF THE NW ARM OF THE
 HV6861'CREEK, ON HARD, LEVEL GROUND (SOD), ABOUT 15 FEET ABOVE
 HV6861'HIGH-WATER, ABOUT 30 METERS FROM HIGH-WATER MARK, AND 20 METERS
 HV6861'FROM EDGE OF SOD. THE STATION AND REFERENCE MARKS ARE BRONZE
 HV6861'TABLETS SET IN CONCRETE IN TILES SURROUNDED BY CONCRETE AS
 HV6861'DESCRIBED EXCEPT THAT UNITED STATES ORDNANCE TABLETS WERE USED.
 HV6861'THE REFERENCE MARK IS IN OPEN ABOUT HALFWAY BETWEEN STATION AND
 HV6861'FENCE, ABOUT 15 METERS FRO THE FENCE AND 20 METERS FROM EDGE OF
 HV6861'SOD.  ITS RELATION TO CENTER MARK NOT KNOWN.
 HV6861
 HV6861                          STATION RECOVERY (1929)
 HV6861
 HV6861'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (EBL)
 HV6861'THE MARK FOUND WAS AN ORDNANCE MARK.
 HV6861'
 HV6861'THE SITE OF THE STATION WAS VISITED, AND THE MARK, WITH SIGNAL
 HV6861'STANDING WAS FOUND.  DISTANCES TO LANDMARK DID NOT CHECK THE
 HV6861'DESCRIPTION, A DILIGENT SEARCH WAS MADE FOR THE REFERENCE MARK,
 HV6861'BUT NONE COULD BE FOUND.  THE STATION WAS RELOCATED, AND THE
 HV6861'POSITION WAS FOUND TO CHECK THE POSITION OF THE OLD STATION.  A
 HV6861'LARGE CEDAR TREE WAS CUT IN ORDER TO CLEAR THE LINE TO STATION
 HV6861'LOTHROP, THE FENCE, WHICH EASILY APPEARS TEN YEARS OLD WAS FOUND
 HV6861'TO BE 15 YARDS N OF THE STATION, AND A FENCE CORNER 30 YARDS NE OF
 HV6861'THE STATION.  THERE IS NO APPEARANCE OF EROSION OF THE SHORE.
 HV6861'
 HV6861'A REFERENCE MARK, C. AND G.S. WAS SET AS FOLLOWS, IS A STANDARD
 HV6861'BRONZE DISK SET IN CONCRETE AS DESCRIBED.
 HV6861
 HV6861                          STATION RECOVERY (1934)
 HV6861
 HV6861'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6861'A STATION OF THE U.S.C. AND G.S. ESTABLISHED IN 1919.  THE MARK IS
 HV6861'CEMENTED IN AN 8-INCH TILE THAT IS FLUSH WITH THE GROUND.  IT IS
 HV6861'STAMPED CAFFEE AND HAS NO DATE, THE MARK IS A BUREAU OF ORDNANCE
 HV6861'NAVY DEPARTMENT MARK.  THE STATION IS ON THE NE SIDE OF THE
 HV6861'POTOMAC RIVER, ABOUT 300 METERS (984 FEET) NW OF THE ENTRANCE TO
 HV6861'BLAKE CREEK, 50 METERS (164 FEET) NW OF THE END OF THE NW ARM OF
 HV6861'THE CREEK, 6.4 METERS (21 FEET) S OF AN OLD FENCE, 6.0 METERS (20
 HV6861'FEET) N OF RIVER BLUFF, 15.7 METERS (51 FEET) W OF THE CENTER
 HV6861'LINE OF THE ROAD.
 HV6861'
 HV6861'REFERENCE MARK NO. 1 IS AN OLD MARK, IT IS A STANDARD U.S.C. AND
 HV6861'G.S. REFERENCE MARK AND IS STAMPED 1929, IT IS SET IN A CIRCULAR
 HV6861'MASS OF CONCRETE 18 INCHES IN DIAMETER AND IS FLUSH WITH THE
 HV6861'GROUND.  THE DISTANCE 16.091 METERS (52.79 FEET) WAS CHECKED BUT
 HV6861'THE DIRECTION COULD ONLY BE CHECKED APPROXIMATELY BECAUSE THE MARK
 HV6861'WAS SO CLOSE THAT THE TOWER OBSTRUCTED IT.  THE MARK IS 9.50
 HV6861'METERS (31.2 FEET) W OF THE ROAD, 9.0 METERS (30 FEET) N OF AN OLD
 HV6861'FENCE.
 HV6861'
 HV6861'REFERENCE MARK NO. 2, A STANDARD BRONZE DISK SET IN CONCRETE AS
 HV6861'DESCRIBED PROJECTS 4 INCHES ABOVE GROUND, IS A NEW MARK AND IS
 HV6861'STAMPED CAFFEE 1919 1934.  IT IS 21.835 METERS (71.65 FEET) E OF
 HV6861'STATION, 6.50 METERS (21.3 FEET) E OF CENTER LINE OF THE ROAD,
 HV6861'13.50 METERS (44.29 FEET) N OF RIVER BLUFF.
 HV6861'
 HV6861'REFERENCE MARK NO. 3 (AZIMUTH MARK), A STANDARD BRONZE DISK SET IN
 HV6861'CONCRETE AS DESCRIBED PROJECTS 4 INCHES ABOVE GROUND, IS A NEW
 HV6861'MARK AND IS STAMPED CAFFEE 1919 1934.  IT IS ABOUT 0.15 MILE W OF
 HV6861'THE STATION, 13 PACES N OF RIVER BLUFF, AND 2 PACES ESE OF A
 HV6861'3-INCH LOCUST TREE.  SOME CLEARING WILL BE NECESSARY IN ORDER TO
 HV6861'MAKE THIS MARK VISIBLE FROM GROUND.
 HV6861'
 HV6861'TO REACH FROM LEONARDTOWN, MARYLAND, GO SE ON STATE HIGHWAY 5
 HV6861'(MAIN ROAD BETWEEN LEONARDTOWN AND ST. INGOES) 6.6 MILES TO A
 HV6861'GRAVEL ROAD FORKING TO THE RIGHT AT A SIGN AND ARROW MULBERRY
 HV6861'FIELDS.  HERE TURN RIGHT AND GO 1.15 MILES TO A ROAD FORKS AND
 HV6861'SIGN MULBERRY FIELDS, TAKE RIGHT FORK AND GO 2.2 MILES TO COL.
 HV6861'FAYS HOME (COL. FAY OWNS THE PROPERTY ON WHICH THE STATION IS
 HV6861'LOCATED).  TURN W AND GO THROUGH A GATE AT THE GARAGE, TURN LEFT
 HV6861'(S) AND GO ABOUT 100 YARDS PAST THE END OF A GROVE OF TREES AND
 HV6861'TURN RIGHT (W) AND GO ABOUT 0.1 MILE TO AN OLD BARN, LET DOWN
 HV6861'BARS OF GATE THAT IS JUST S OF BARN AND GO 0.75 MILE TO END OF
 HV6861'ROAD AND STATION.
 HV6861
 HV6861                          STATION RECOVERY (1937)
 HV6861
 HV6861'RECOVERY NOTE BY US NAVY 1937
 HV6861'THIS STATION WAS VISITED AND RECOVERED OCTOBER 11, 1937.  THE
 HV6861'STATION WAS FOUND IN GOOD SHAPE AND THE DESCRIPTION GIVEN IS
 HV6861'SATISFACTORY WITH THE EXCEPTION OF THE DISTANCE TO THE EDGE OF THE
 HV6861'BANK WHICH WAS NO DOUBT TAKEN AWAY BY THE 1933 HIGH TIDE.  THE
 HV6861'EDGE OF BLUFF IS NOW 18 FEET FROM THE ORDNANCE MARKER ESTABLISHED
 HV6861'IN 1919.  THE REFERENCE MARK ESTABLISHED BY LATHAM IN 1929 WAS
 HV6861'FOUND IN GOOD CONDITION.
 HV6861
 HV6861                          STATION RECOVERY (1942)
 HV6861
 HV6861'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6861'THE FOLLOWING DISCREPANCY WAS NOTED IN THE ORIGINAL DESCRIPTION--
 HV6861'
 HV6861'THE OLD FENCE MENTIONED IN THE ORIGINAL DESCRIPTION NO LONGER EXISTS.
 HV6861'
 HV6861'THE STATION IS LOCATED ABOUT 6.1 MILES BY ROAD, NW OF VALLEY LEE
 HV6861'POST OFFICE, ON MULBERRY FARM AND OWNED BY COLONEL FAY, ON THE NE
 HV6861'SIDE OF THE POTOMAC RIVER, ABOUT 300 METERS NW OF THE ENTRANCE TO
 HV6861'BLAKE CREEK, ABOUT 50 METERS NW OF THE END OF THE NW ARM OF THE
 HV6861'CREEK, ABOUT 100 FEET E OF A WIRE FENCE, 51 FEET W OF THE CENTER
 HV6861'LINE OF THE ROAD AND NEAR THE EDGE OF A FLAT SLOPING BANK.  THE
 HV6861'STATION IS MARKED BY A NAVY DEPARTMENT, BUREAU OF ORDNANCE DISK,
 HV6861'STAMPED CAFFEE, SET IN A 6-INCH TERRA COTTA TILE PIPE FILLED WITH
 HV6861'CONCRETE AND SURROUNDED BY A MASS OF CONCRETE WHICH IS FLUSH WITH
 HV6861'THE SURFACE OF THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HV6861'
 HV6861'REFERENCE MARK NO. 1 IS LOCATED 52.79 FEET N OF THE STATION AND 31
 HV6861'FEET W OF THE CENTER LINE OF THE ROAD.  THE MARK IS A BRONZE DISK
 HV6861'REFERENCE MARK WITH THE ARROW POINTING TOWARD THE STATION, AND
 HV6861'STAMPED CAFFEE NO. 1 1929, SET IN A CIRCULAR MASS OF CONCRETE 18
 HV6861'INCHES IN DIAMETER, WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV6861'THE MARK IS IN GOOD CONDITION.
 HV6861'
 HV6861'REFERENCE MARK NO. 2 IS LOCATED 71.65 FEET E OF THE STATION, 21.3
 HV6861'FEET E OF THE CENTER LINE OF THE ROAD AND 44.3 FEET N OF THE RIVER
 HV6861'BLUFF.  THE MARK IS A BRONZE DISK REFERENCE MARK, WITH THE ARROW
 HV6861'POINTING TOWARD THE STATION, STAMPED CAFFEE NO. 2 1919, 1934, SET
 HV6861'IN AN 8-INCH CONCRETE MONUMENT, WHICH PROJECTS 4 INCHES ABOVE THE
 HV6861'SURFACE OF THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HV6861'
 HV6861'REFERENCE MARK NO. 3 (AZIMUTH MARK) WAS SEARCHED FOR WITHOUT
 HV6861'RESULTS, THE LOCATION IS COVERED WITH A DENSE GROWTH OF
 HV6861'HONEYSUCKLE VINES AND A SPARSE GROWTH OF LOCUST TREES RANGING FROM
 HV6861'3 TO 6 INCHES IN DIAMETER.  THIS MARK COULD NOT BE FOUND.
 HV6861
 HV6861                          STATION RECOVERY (1958)
 HV6861
 HV6861'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6861'THE STATION MARK AND REFERENCE MARKS 1 AND 2 WERE RECOVERED IN
 HV6861'GOOD CONDITION.  THE 1942 DESCRIPTION BY W.D.P. IS ADEQUATE AND
 HV6861'COMPLETE WITH THE FOLLOWING ADDITION.
 HV6861'
 HV6861'THE STATION SITE IS LOCATED 1026 FEET SOUTHEAST ALONG THE SHORE
 HV6861'FROM THE ONLY BEACH COTTAGE IN THE VICINITY, AND 18 FEET FROM THE
 HV6861'EDGE OF THE BLUFF.
 HV6861
 HV6861                          STATION RECOVERY (1959)
 HV6861
 HV6861'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV6861'STATION, R.M.S 1 AND 2 RECOVERED AS DESCRIBED AND IN GOOD
 HV6861'CONDITION.  R.M. NO. 3 NOT RECOVERED.  A NEW DESCRIPTION FOLLOWS.
 HV6861'
 HV6861'THE STATION IS ON THE NORTHEAST SHORE OF THE POTOMAC RIVER, ABOUT
 HV6861'280 METERS NORTHWEST OF THE ENTRANCE TO BLAKE CREEK, 50 METERS
 HV6861'NORTHWEST OF THE END OF THE NORTHWEST ARM OF BLAKE CREEK, 51 FEET
 HV6861'WEST OF THE CENTER OF A WOODS ROAD, 25 FEET NORTH OF THE RIVER
 HV6861'BANK THAT IS ABOUT 5 FEET HIGH AT THIS POINT.  JUST NORTH OF THE
 HV6861'STATION A TRAIL LEADS FROM THE WOODS ROAD TO A DEPRESSION 8 PACES
 HV6861'WEST OF THE STATION.  A 9 INCH DIAMETER PINE TREE IN THIS
 HV6861'DEPRESSION WAS NOTCHED ON THE RIVER SIDE SOME 7 FEET ABOVE THE
 HV6861'GROUND TO CLEAR THE LOTHROP 3 1959 LINE.  DISTANCE FROM STATION TO
 HV6861'NOTCH IS 25 FEET.  STATION IS 18.5 FEET (SLOPE DIST.) SOUTHWEST OF
 HV6861'A SPIKE DRIVEN IN A TRIANGULAR BLAZE ON THE NORTH SIDE OF A 14
 HV6861'INCH DIAMETER PINE TREE.  (NOTE--AN 11 INCH DIAMETER PINE TREE IS
 HV6861'8 FEET SOUTH OF THE 14 INCH PINE WITH BLAZE AND LINE FROM STATION
 HV6861'TO R.M. NO 2 PASSES BETWEEN THESE TWO PINES WHICH ARE THE ONLY
 HV6861'LARGE TREES NEAR THE STATION.  ANCHOR HOLES DUG IN 1934 ARE
 HV6861'CLEARLY VISIBLE AT STATION SITE.  THE CONCRETE FILLED TILE PIPE IS
 HV6861'FLUSH WITH THE GROUND AND THE BUREAU OF ORDNANCE NAVY DEPARTMENT
 HV6861'DISC IS STAMPED CAFFEE.
 HV6861'
 HV6861'R.M. NO 1 IS NORTH-NORTHEAST OF THE STATION, 51 FEET WEST OF THE
 HV6861'CENTER OF THE WOOD ROAD, AND 42.6 FEET (SLOPE DIST.) NORTH OF THE
 HV6861'SPIKE IN THE TRIANGULAR BLAZE IN THE 14 INCH DIAMETER PINE TREE.
 HV6861'STATION IS JUST SOUTH OF A CLUMP OF HONEYSUCKLE AND HOLLY AT THE
 HV6861'EDGE OF THE WOODS.  THE MONUMENT IS A CIRCULAR MASS OF CONCRETE
 HV6861'SOME 18 INCHES IN DIAMETER AND IS FLUSH WITH THE GROUND.  THE
 HV6861'DISC IS STAMPED 1929.
 HV6861'
 HV6861'R.M. NO 2 IS EAST-SOUTHEAST OF THE STATION, 59 FEET NORTH OF THE
 HV6861'RIVER BANK THAT IS DEPRESSED AT THIS POINT WHICH IS THE END OF THE
 HV6861'WOODS ROAD, 20 FEET EAST OF THE CENTER OF THE WOODS ROAD.
 HV6861'STATION IS NOW AMONG A PILE OF DEAD PINE BRANCHES AND OVERGROWN
 HV6861'WITH HOLLY AND HONEYSUCKLE.  THE MONUMENT, PROJECTS 2 INCHES AND
 HV6861'THE DISK IS STAMPED CAFFEE 1919 1934.
 HV6861'
 HV6861'R.M. NO 3 (AZIMUTH MARK) NOT FOUND AFTER A BRIEF SEARCH.  ORIGINAL
 HV6861'DESCRIPTION IS INADEQUATE AND CHANGES HAVE TAKEN PLACE IN THE
 HV6861'AREA. NO LINE WAS CLEARED, SO THIS MARK MAY STILL BE IN GOOD
 HV6861'CONDITION.
 HV6861'
 HV6861'TO REACH FROM THE U.S. POST OFFICE, LEONARDTOWN, MARYLAND, GO
 HV6861'SOUTHEAST ON STATE HIGHWAY 5 FOR 6.5 MILES TO A PAVED ROAD RIGHT.
 HV6861'TURN RIGHT ONTO PAVED ROAD AND GO SOUTHWEST FOR 1.15 MILES TO
 HV6861'Y-INTERSECTION OF PAVED ROADS AND SIGNS MULBERRY FIELDS AND
 HV6861'WHITEPOINT TAVERN.  TURN SHARP RIGHT AND FOLLOW PAVED ROAD FOR 1.2
 HV6861'MILES TO SIGNS MULBERRY FIELDS, JUBILES FIELDS, AND PEAR HILL
 HV6861'FARM, ON RIGHT.  TURN LEFT ONTO GRAVEL ROAD OPPOSITE SIGNS AND GO
 HV6861'0.1 MILE TO FORK IN ROAD AND SIGN SHOWING MULBERRY FIELDS TO
 HV6861'RIGHT. TAKE RIGHT FORK AND FOLLOW GRAVEL ROAD 0.7 MILE TO WHITE
 HV6861'FARMHOUSE. BEAR LEFT AND FOLLOW GRAVEL ROAD PAST HOUSE ALONG A
 HV6861'LINE OF TREES FOR 0.1 MILE TO A GARAGE ON THE LEFT AND GATE AHEAD.
 HV6861'GO THRU GATE ONTO FIELD ROAD TO A WHITE SILE AHEAD SOME 0.05 MILE.
 HV6861'TURN LEFT JUST BEFORE REACHING SILE AND GO 0.15 MILE THRU FIELD
 HV6861'TO AN OLD BARN ON RIGHT AT THE BOTTOM OF A SMALL HILL.  PASS THRU
 HV6861'GATE SOUTH OF THE BARN AND FOLLOW WOOD A ROAD ALONG EDGE OF FIELD
 HV6861'AND FENCE FOR 0.15 MILE TO EDGE OF MARSHY LAND.  JOG LEFT ONTO
 HV6861'EDGE OF FIELD AND FOLLOW WEST EDGE OF FIELD FOR 0.1 MILE TO EDGE
 HV6861'OF WOODS AND WOODS ROAD AHEAD.  FOLLOW WOODS ROAD FOR 0.3 MILE TO
 HV6861'A BARBED WIRE GATE.  CONTINUE THRU GATE AND ALONG WOODS ROAD FOR
 HV6861'0.1 MILE TO STATION ON RIGHT AS DESCRIBED.
 HV6861
 HV6861                          STATION RECOVERY (1968)
 HV6861
 HV6861'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (ELH)
 HV6861'THE STATION MARK, REFERENCE MARKS 1 AND 2 RECOVERED AS DESCRIBED.
 HV6861'THE AZIMUTH MARK WAS NOT SEARCHED FOR DUE TO GROUND SET UP.  THE
 HV6861'1959 ROUTE TO THE STATION IS IN ERROR.  A NEW TO REACH FOLLOWS.
 HV6861'
 HV6861'TO REACH THE STATION FROM THE TRAFFIC LIGHT AND MAIN INTERSECTION
 HV6861'IN LEONARDTOWN, GO SOUTHEAST ON STATE HIGHWAY 5 FOR 2.0 MILES TO A
 HV6861'CROSSROAD.  TURN RIGHT AND FOLLOW HIGHWAY 244 SOUTHEASTERLY FOR
 HV6861'6.5 MILES TO A SIDE ROAD RIGHT AT SIGN MULBERRY FIELDS.  TURN
 HV6861'RIGHT, GRAVELED ROAD, AND FOLLOW THE MULBERRY FIELD ROAD FOR 1.0
 HV6861'MILE TO THE MAIN BRICK HOUSE.  PERMISSION REQUIRED FROM HERE.
 HV6861'TURN RIGHT AND GO AROUND LEFT SIDE OF BARNS FOR 0.1 MILE, THEN
 HV6861'LEFT, DOWN HILL, FOR 0.1 MILE TO A GATE.  PASS THROUGH GATE AND
 HV6861'CONTINUE SOUTHERLY ON THE MAIN WOODS ROAD FOR 0.75 MILE TO THE
 HV6861'END OF THE ROAD AT THE RIVER AND THE STATION ON THE RIGHT.
 HV6861'
 HV6861'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--7 MILES SSE OF
 HV6861'LEONARDTOWN.
 HV6861
 HV6861                          STATION RECOVERY (1974)
 HV6861
 HV6861'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HV6861'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED AND IN
 HV6861'GOOD CONDITION AS DESCRIBED.  THE AZIMUTH MARK WAS NOT SEARCHED
 HV6861'FOR AT THIS TIME.  THE PREVIOUS DESCRIPTION WAS FOUND TO BE
 HV6861'ENTIRELY ADEQUATE.  A NEW AND COMPLETE DESCRIPTION FOLLOWS--
 HV6861'
 HV6861'THE STATION IS LOCATED 7 MILES SOUTH-SOUTHEAST OF LEONARDTOWN, 5
 HV6861'MILES NORTH-NORTHWEST OF PINEY POINT, ON PROPERTY OWNED BY MR. H.
 HV6861'JANSSON, WHOSE ADDRESS IS MULBERRY FIELDS, STAR ROUTE BOX 56,
 HV6861'LEONARDTOWN, MARYLAND, 20605.
 HV6861'
 HV6861'TO REACH THE STATION FROM THE POST OFFICE IN LEONARDTOWN, GO EAST
 HV6861'ON PARK AVENUE FOR 0.05 MILE TO A T-ROAD.  TURN LEFT AND GO NORTH
 HV6861'ON COURT HOUSE DRIVE FOR 0.05 MILE TO STATE HIGHWAY 5.  TURN RIGHT
 HV6861'AND GO EAST ON STATE HIGHWAY 5 FOR 1.6 MILES TO THE JUNCTION OF
 HV6861'STATE HIGHWAY 244.  TURN RIGHT AND GO SOUTHWEST ON STATE HIGHWAY
 HV6861'244 FOR 6.5 MILES TO A SIDE ROAD ON THE RIGHT AND A SIGN MULBERRY
 HV6861'FIELDS.  TURN RIGHT AND GO SOUTHERLY ON A GRAVELED ROAD FOR 0.9
 HV6861'MILE TO MR. JANNSONS HOUSE ON THE LEFT.  TURN RIGHT AND GO
 HV6861'EASTERLY ON A TRACK ROAD FOR 0.1 MILE TO A SIDE ROAD ON THE LEFT.
 HV6861'TURN LEFT AND GO SOUTHERLY ON A TRACK ROAD, DOWNHILL, FOR 0.1
 HV6861'MILE TO A GATE, PASS THROUGH THE GATE AND CONTINUE SOUTHERLY ON
 HV6861'THE TRACK ROAD FOR 0.8 MILE TO THE END OF THE ROAD, AT THE RIVER
 HV6861'BANK, AND THE STATION ON THE RIGHT.
 HV6861'
 HV6861'THE STATION MARK, IS A BUREAU OF ORDANCE DISK STAMPED CAFFEE, SET
 HV6861'IN THE TOP OF AN 8-INCH, CEMENT FILLED, TILE WHICH IS FLUSH WITH
 HV6861'THE GROUND SURFACE.  IT IS 72 FEET WEST-NORTHWEST OF THE
 HV6861'APPROXIMATE CENTER OF THE TRACK ROAD, 43 FEET SOUTHWEST OF A 20
 HV6861'INCH PINE TREE, 12 FEET NORTHEAST OF THE RIVER BANK AND 6 FEET
 HV6861'NORTH-NORTHEAST OF A 6-INCH PINE TREE.
 HV6861'
 HV6861'REFERENCE MARK 1, A STANDARD DISK STAMPED CAFFEE NO 1 1929, SET IN
 HV6861'THE TOP OF AN IRREGULAR MASS OF CONCRETE THAT IS 17 INCHES ACROSS
 HV6861'ITS TOP, AND IS FLUSH WITH THE GROUND SURFACE.  IT IS 37 FEET
 HV6861'WEST-NORTHWEST OF THE APPROXIMATE CENTER OF THE ROAD, 15 FEET
 HV6861'NORTH OF A 20-INCH PINE TREE AND 1.3 FEET SOUTH OF A METAL WITNESS
 HV6861'POST.
 HV6861'
 HV6861'REFERENCE MARK 2, A STANDARD DISK STAMPED CAFFEE NO 2 1919 1934,
 HV6861'IS SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT THAT
 HV6861'PROJECTS 2 INCHES ABOVE THE GROUND SURFACE.  IT IS 34 FEET
 HV6861'SOUTH-SOUTHEAST OF A 16-INCH PINE TREE, 31 FEET NORTHEAST OF THE
 HV6861'RIVER BANK, AND AT THE END OF THE TRACK ROAD.
 HV6861'
 HV6861'NO MEASUREMENT WAS MADE BETWEEN REFERENCE MARKS, DUE TO DENSE
 HV6861'TREES ON LINE.
 HV6861'
 HV6861'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--7 MILES
 HV6861'SOUTH-SOUTHEAST OF LEONARDTOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5488 ***********************************************************************
 JV5488  DESIGNATION -  CAHILL USE 1915
 JV5488  PID         -  JV5488
 JV5488  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5488  COUNTRY     -  US
 JV5488  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5488
 JV5488                         *CURRENT SURVEY CONTROL
 JV5488  ______________________________________________________________________
 JV5488* NAD 83(1991) POSITION- 39 16 30.41693(N) 076 36 06.55240(W)   ADJUSTED
 JV5488* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5488  ______________________________________________________________________
 JV5488  GEOID HEIGHT    -        -32.780 (meters)                     GEOID18
 JV5488  LAPLACE CORR    -         -5.16  (seconds)                    DEFLEC18
 JV5488  HORZ ORDER      -  THIRD
 JV5488
 JV5488.The horizontal coordinates were established by classical geodetic methods
 JV5488.and adjusted by the National Geodetic Survey in January 1992.
 JV5488
 JV5488.The orthometric height was scaled from a topographic map.
 JV5488
 JV5488.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5488.GEOID18 height accuracy estimate available here.
 JV5488
 JV5488.Click photographs - Photos may exist for this station.
 JV5488
 JV5488.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5488
 JV5488. The following values were computed from the NAD 83(1991) position.
 JV5488
 JV5488;                    North         East     Units Scale Factor Converg.
 JV5488;SPC MD       -   178,622.791   434,357.918   MT  0.99997408   +0 14 59.7
 JV5488;SPC MD       -   586,031.61  1,425,055.94   sFT  0.99997408   +0 14 59.7
 JV5488;UTM  18      - 4,348,530.043   361,830.717   MT  0.99983506   -1 00 51.1
 JV5488
 JV5488!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5488!SPC MD       -   1.00000502  x   0.99997408  =   0.99997910
 JV5488!UTM  18      -   1.00000502  x   0.99983506  =   0.99984008
 JV5488
 JV5488:                Primary Azimuth Mark                     Grid Az
 JV5488:SPC MD       -  FEDERAL USE 1915                         316 26 36.3
 JV5488:UTM  18      -  FEDERAL USE 1915                         317 42 27.1
 JV5488
 JV5488_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6183048530(NAD 83)
 JV5488
 JV5488|---------------------------------------------------------------------|
 JV5488| PID    Reference Object                     Distance      Geod. Az  |
 JV5488|                                                           dddmmss.s |
 JV5488| JV5546 MERCHANTS                           488.966 METERS 0165007.8 |
 JV5488| JV5548 MINERS USE 1915                     481.168 METERS 0184728.3 |
 JV5488| JV5550 GILL USE 1915                       467.146 METERS 0335746.1 |
 JV5488| JV5573 FEDERAL USE 1915                    APPROX. 0.8 KM 3164136.0 |
 JV5488|---------------------------------------------------------------------|
 JV5488
 JV5488                          SUPERSEDED SURVEY CONTROL
 JV5488
 JV5488  NAD 83(1986)-  39 16 30.41330(N)    076 36 06.56119(W) AD(       ) 3
 JV5488  NAD 27      -  39 16 30.02400(N)    076 36 07.66900(W) AD(       ) 3
 JV5488  USSD        -  39 16 30.38900(N)    076 36 07.50700(W) AD(       ) 3
 JV5488
 JV5488.Superseded values are not recommended for survey control.
 JV5488
 JV5488.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5488.See file dsdata.pdf to determine how the superseded data were derived.
 JV5488
 JV5488_MARKER: DD = SURVEY DISK
 JV5488_SETTING: 0 = UNSPECIFIED SETTING
 JV5488_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5488
 JV5488  HISTORY     - Date     Condition        Report By
 JV5488  HISTORY     - 1915     MONUMENTED       USACE
 JV5488
 JV5488                          STATION DESCRIPTION
 JV5488
 JV5488'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1915
 JV5488'S OF THE HARBOR, NE OF THE MACHINE SHOP OF W.S. CAHILL, IN SOLID
 JV5488'FILL.  THE STATION IS MARKED BY A CONCRETE MONUMENT CENTERED BY
 JV5488'A STANDARD U.S.E. BRONZE MARKER.  DISTANCES FROM THE STATION TO
 JV5488'REFERENCE MARKS ARE AS FOLLOWS--NW CORNER OF THE NORTHERLY
 JV5488'PROJECTION OF THE MACHINE SHOP, 15.10 METERS (49.56 FEET).  NE
 JV5488'CORNER OF SAME, 11.16 METERS (36.62 FEET).  E FROM AN 8-INCH
 JV5488'IRON CASING 6 FEET HIGH, 1.34 METERS (4.38 FEET).  NW FROM A
 JV5488'SIMILAR IRON CASING, 4.06 METERS (13.31 FEET).  AND 3.52
 JV5488'METERS (11.54 FEET) FROM THE COPING.
 JV5488'
 JV5488'STATION REPORTED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5941 ***********************************************************************
 HV5941  DESIGNATION -  CAIN 1901
 HV5941  PID         -  HV5941
 HV5941  STATE/COUNTY-  MD/DORCHESTER
 HV5941  COUNTRY     -  US
 HV5941  USGS QUAD   -  CHURCH CREEK (2016)
 HV5941
 HV5941                         *CURRENT SURVEY CONTROL
 HV5941  ______________________________________________________________________
 HV5941* NAD 83(1991) POSITION- 38 33 33.67050(N) 076 10 41.77955(W)   ADJUSTED
 HV5941* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5941  ______________________________________________________________________
 HV5941  GEOID HEIGHT    -        -34.848 (meters)                     GEOID18
 HV5941  LAPLACE CORR    -         -4.62  (seconds)                    DEFLEC18
 HV5941  HORZ ORDER      -  THIRD
 HV5941
 HV5941.The horizontal coordinates were established by classical geodetic methods
 HV5941.and adjusted by the National Geodetic Survey in January 1992.
 HV5941
 HV5941.The orthometric height was scaled from a topographic map.
 HV5941
 HV5941.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5941.GEOID18 height accuracy estimate available here.
 HV5941
 HV5941.Click photographs - Photos may exist for this station.
 HV5941
 HV5941.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5941
 HV5941. The following values were computed from the NAD 83(1991) position.
 HV5941
 HV5941;                    North         East     Units Scale Factor Converg.
 HV5941;SPC MD       -    99,414.016   471,619.264   MT  0.99996501   +0 30 56.7
 HV5941;SPC MD       -   326,160.82  1,547,304.20   sFT  0.99996501   +0 30 56.7
 HV5941;UTM  18      - 4,268,537.379   397,339.915   MT  0.99972978   -0 44 04.2
 HV5941
 HV5941!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5941!SPC MD       -   1.00000535  x   0.99996501  =   0.99997036
 HV5941!UTM  18      -   1.00000535  x   0.99972978  =   0.99973513
 HV5941
 HV5941:                Primary Azimuth Mark                     Grid Az
 HV5941:SPC MD       -  ADAM 1901                                251 04 44.0
 HV5941:UTM  18      -  ADAM 1901                                252 19 44.9
 HV5941
 HV5941_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9733968537(NAD 83)
 HV5941
 HV5941|---------------------------------------------------------------------|
 HV5941| PID    Reference Object                     Distance      Geod. Az  |
 HV5941|                                                           dddmmss.s |
 HV5941| HV5954 ABEL 1901                           438.060 METERS 0011437.3 |
 HV5941| HV5953 ADAM 1901                           APPROX. 0.8 KM 2513540.7 |
 HV5941|---------------------------------------------------------------------|
 HV5941
 HV5941                          SUPERSEDED SURVEY CONTROL
 HV5941
 HV5941  NAD 83(1986)-  38 33 33.66787(N)    076 10 41.79519(W) AD(       ) 3
 HV5941  NAD 27      -  38 33 33.26600(N)    076 10 42.98300(W) AD(       ) 3
 HV5941  USSD        -  38 33 33.67600(N)    076 10 42.80400(W) AD(       ) 3
 HV5941
 HV5941.Superseded values are not recommended for survey control.
 HV5941
 HV5941.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5941.See file dsdata.pdf to determine how the superseded data were derived.
 HV5941
 HV5941
 HV5941  HISTORY     - Date     Condition        Report By
 HV5941  HISTORY     - 1901     MONUMENTED       CGS
 HV5941  HISTORY     - 1908     GOOD             CGS
 HV5941  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5941
 HV5941                          STATION DESCRIPTION
 HV5941
 HV5941'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV5941'ON THE S SIDE OF LITTLE CHOPTANK RIVER, ON POINT JUST TO E OF
 HV5941'SMITHS COVE, 12 METERS (39 FEET) FROM A TRIANGLE ON A CEDAR TREE
 HV5941'BEARING NNE.  STATION MARK IS CENTER OF CEDAR STUB.
 HV5941
 HV5941                          STATION RECOVERY (1961)
 HV5941
 HV5941'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5941'STATION WAS MARKED BY A CEDAR STUB.  IT WAS NOT RECOVERED AFTER A
 HV5941'SEARCH OF THE AREA BY A TWO MAN PARTY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6684 ***********************************************************************
 HV6684  DESIGNATION -  CAIN MSFC 1908
 HV6684  PID         -  HV6684
 HV6684  STATE/COUNTY-  MD/ST MARYS
 HV6684  COUNTRY     -  US
 HV6684  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6684
 HV6684                         *CURRENT SURVEY CONTROL
 HV6684  ______________________________________________________________________
 HV6684* NAD 83(1991) POSITION- 38 16 56.71530(N) 076 23 26.12460(W)   ADJUSTED
 HV6684* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6684  ______________________________________________________________________
 HV6684  GEOID HEIGHT    -        -34.670 (meters)                     GEOID18
 HV6684  LAPLACE CORR    -         -6.00  (seconds)                    DEFLEC18
 HV6684  HORZ ORDER      -  THIRD
 HV6684
 HV6684.The horizontal coordinates were established by classical geodetic methods
 HV6684.and adjusted by the National Geodetic Survey in January 1992.
 HV6684
 HV6684.The orthometric height was scaled from a topographic map.
 HV6684
 HV6684.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6684.GEOID18 height accuracy estimate available here.
 HV6684
 HV6684.Click photographs - Photos may exist for this station.
 HV6684
 HV6684.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6684
 HV6684. The following values were computed from the NAD 83(1991) position.
 HV6684
 HV6684;                    North         East     Units Scale Factor Converg.
 HV6684;SPC MD       -    68,529.511   453,319.809   MT  1.00000310   +0 22 57.0
 HV6684;SPC MD       -   224,833.90  1,487,266.74   sFT  1.00000310   +0 22 57.0
 HV6684;UTM  18      - 4,238,065.453   378,376.802   MT  0.99978217   -0 51 41.9
 HV6684
 HV6684!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6684!SPC MD       -   1.00000532  x   1.00000310  =   1.00000842
 HV6684!UTM  18      -   1.00000532  x   0.99978217  =   0.99978749
 HV6684
 HV6684_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7837638065(NAD 83)
 HV6684
 HV6684                          SUPERSEDED SURVEY CONTROL
 HV6684
 HV6684  NAD 83(1986)-  38 16 56.71507(N)    076 23 26.14053(W) AD(       ) 3
 HV6684  NAD 27      -  38 16 56.27000(N)    076 23 27.32300(W) AD(       ) 3
 HV6684  USSD        -  38 16 56.63300(N)    076 23 27.07500(W) AD(       ) 3
 HV6684
 HV6684.Superseded values are not recommended for survey control.
 HV6684
 HV6684.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6684.See file dsdata.pdf to determine how the superseded data were derived.
 HV6684
 HV6684_MARKER: N = NAIL
 HV6684_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV6684_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6684
 HV6684  HISTORY     - Date     Condition        Report By
 HV6684  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6684  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6684
 HV6684                          STATION DESCRIPTION
 HV6684
 HV6684'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6684'STATION IS ON THE WESTERN SHORE OF CHESAPEAKE BAY, ABOUT 1-5/8
 HV6684'MILES SW OF CEDAR POINT LIGHT, ON A BANK ABOUT 5 FEET ABOVE
 HV6684'HIGH-WATER MARK, ABOUT 20 YARDS NW OF ORDINARY HIGH-WATER MARK,
 HV6684'5 YARDS NW OF EXTREME HIGH-WATER MARK, 100 YARDS S-SW OF
 HV6684'OLD-FASHIONED HOUSE AMONG SEVERAL LARGE TREES, AND ABOUT 250
 HV6684'YARDS BELOW SMALL WHARF AND CANNING HOUSE.  STATION IS MARKED BY
 HV6684'A NAIL SET IN CEMENT IN A 3-INCH PIPE WITH TOP ABOUT 2 INCHES
 HV6684'ABOVE THE GROUND.  THE REFERENCE MARK IS MARKED BY A HOLE IN
 HV6684'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6684'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6684'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6684'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6684'6.45 METERS (21.16 FEET) FROM THE STATION IN AZIMUTH 196
 HV6684'DEG 55 MIN.  OTHER DISTANCES AND AZIMUTHS ARE AS
 HV6684'FOLLOWS--RIGHT CHIMNEY ON TARLETON HOUSE, 3-1/4 MILES, 1 DEG
 HV6684'56 MIN.  NEAR CORNER OF HOUSE, 100 YARDS, 201 DEG 57 MIN.
 HV6684'ASPEN TREE IN HOUSE YARD, 100 YARDS, 206 DEG 20 MIN.
 HV6684
 HV6684                          STATION RECOVERY (1942)
 HV6684
 HV6684'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6684'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED FOR
 HV6684'BY TWO MEN FOR 1-1/2 HOURS, BUT NO TRACE OF THEM COULD BE FOUND.  A
 HV6684'FARMER WHO HAS LIVED ON THIS FARM FOR MANY YEARS, REPORTED THAT
 HV6684'HE HAS CULTIVATED THE GROUND AT THE LOCATION OF THE STATION
 HV6684'MANY TIMES AND HE HAS NEVER SEEN THE MARKER.  HE ALSO REPORTS A
 HV6684'FEW FEET OF THE BANK CAVES IN EACH YEAR.  IT IS RECOMMENDED
 HV6684'THAT THIS STATION AND ITS REFERENCE MARK BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4980 ***********************************************************************
 JV4980  DESIGNATION -  CAKE
 JV4980  PID         -  JV4980
 JV4980  STATE/COUNTY-  MD/QUEEN ANNES
 JV4980  COUNTRY     -  US
 JV4980  USGS QUAD   -  CHESTERTOWN (2017)
 JV4980
 JV4980                         *CURRENT SURVEY CONTROL
 JV4980  ______________________________________________________________________
 JV4980* NAD 83(1991) POSITION- 39 08 35.99773(N) 076 04 22.49925(W)   ADJUSTED
 JV4980* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4980  ______________________________________________________________________
 JV4980  GEOID HEIGHT    -        -33.535 (meters)                     GEOID18
 JV4980  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 JV4980  HORZ ORDER      -  THIRD
 JV4980
 JV4980.The horizontal coordinates were established by classical geodetic methods
 JV4980.and adjusted by the National Geodetic Survey in January 1992.
 JV4980
 JV4980.The orthometric height was scaled from a topographic map.
 JV4980
 JV4980.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4980.GEOID18 height accuracy estimate available here.
 JV4980
 JV4980.Click photographs - Photos may exist for this station.
 JV4980
 JV4980.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4980
 JV4980. The following values were computed from the NAD 83(1991) position.
 JV4980
 JV4980;                    North         East     Units Scale Factor Converg.
 JV4980;SPC MD       -   164,324.803   480,143.105   MT  0.99996072   +0 34 54.7
 JV4980;SPC MD       -   539,122.29  1,575,269.50   sFT  0.99996072   +0 34 54.7
 JV4980;UTM  18      - 4,333,230.614   407,280.905   MT  0.99970585   -0 40 38.4
 JV4980
 JV4980!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4980!SPC MD       -   1.00000530  x   0.99996072  =   0.99996602
 JV4980!UTM  18      -   1.00000530  x   0.99970585  =   0.99971115
 JV4980
 JV4980:                Primary Azimuth Mark                     Grid Az
 JV4980:SPC MD       -  JOURNEY                                  142 55 51.3
 JV4980:UTM  18      -  JOURNEY                                  144 11 24.4
 JV4980
 JV4980_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0728033230(NAD 83)
 JV4980
 JV4980|---------------------------------------------------------------------|
 JV4980| PID    Reference Object                     Distance      Geod. Az  |
 JV4980|                                                           dddmmss.s |
 JV4980| JV5000 JOURNEY                             APPROX. 0.7 KM 1433046.0 |
 JV4980| JV4987 MELTON                              APPROX. 0.6 KM 1953745.1 |
 JV4980|---------------------------------------------------------------------|
 JV4980
 JV4980                          SUPERSEDED SURVEY CONTROL
 JV4980
 JV4980  NAD 83(1986)-  39 08 35.99130(N)    076 04 22.51165(W) AD(       ) 3
 JV4980  NAD 27      -  39 08 35.60100(N)    076 04 23.70500(W) AD(       ) 3
 JV4980  USSD        -  39 08 36.01800(N)    076 04 23.48000(W) AD(       ) 3
 JV4980
 JV4980.Superseded values are not recommended for survey control.
 JV4980
 JV4980.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4980.See file dsdata.pdf to determine how the superseded data were derived.
 JV4980
 JV4980_MARKER: H = DRILL HOLE
 JV4980_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4980_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4980+STABILITY: SURFACE MOTION
 JV4980
 JV4980  HISTORY     - Date     Condition        Report By
 JV4980  HISTORY     - 1909     MONUMENTED       MDSFC
 JV4980  HISTORY     - 1941     GOOD             CGS
 JV4980  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV4980
 JV4980                          STATION DESCRIPTION
 JV4980
 JV4980'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV4980'STATION IS ON THE EASTERN SHORE OF UPPER CHESTER RIVER, ABOUT 3/8
 JV4980'MILE N OF MELTON POINT AND 7/8 MILE N OF BOOKERS WHARF, IN A
 JV4980'MARSH, ABOUT 1 FOOT ABOVE HIGH WATER, 13 YARDS ESE OF SHORE, 35
 JV4980'YARDS NE BY N OF SHORE, 35 YARDS NE OF ROUNDED POINT, 150 YARDS
 JV4980'NNW OF ENTRANCE TO A CREEK, 200 YARDS SSW OF BUILDINGS, AND 300
 JV4980'YARDS S OF A HOUSE AMONG TREES.
 JV4980'
 JV4980'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV4980'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV4980'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES.  THE
 JV4980'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV4980'POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED
 JV4980'WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV4980'
 JV4980'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV4980'FOLLOWS--NW PEAK OF BOOKERS WHARF HOUSE, 7/8 MILE, S 2 DEG 24 MIN W.
 JV4980'S CHIMNEY OF NEAR ONE OF TWIN HOUSES, 3/4 MILE, N 73 DEG 40 MIN W. E
 JV4980'CHIMNEY OF BRICK HOUSE AMONG TREES ON RIDGE, 1-1/2 MILES, N 47 DEG
 JV4980'13 MIN W. S PEAK OF BUILDING, 1/4 MILE, N 13 DEG 12 MIN E.  LARGE
 JV4980'LONE TREE ON RIDGE, 1/4 MILE, N 82 DEG 41 MIN E.  LEFT CHIMNEY OF
 JV4980'LARGE HOUSE, 1/4 MILES 71 DEG 50 MIN E.  CHIMNEY ON ELL OF HOUSE
 JV4980'TO LEFT OF TREES, 5/8 MILE, S 32 DEG 49 MIN E.
 JV4980
 JV4980                          STATION RECOVERY (1941)
 JV4980
 JV4980'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV4980'STATION RECOVERED.  IT IS NOW ON HIGH-WATER LINE ON W SIDE OF
 JV4980'POINT, 30 YARDS N OF EXTREME END OF POINT.  THE CONCRETE BLOCK
 JV4980'IS 2/3 EXPOSED AND A BULKHEAD OF TRASH WAS BUILT TO SAVE IT.
 JV4980
 JV4980                          STATION RECOVERY (1961)
 JV4980
 JV4980'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV4980'STATION NOT RECOVERED AFTER A SEARCH OF THE AREA.  IT WAS REPORTED
 JV4980'AS BEING ON THE M.H.W.L. IN 1941 AND HAS PROBABLY BEEN DESTROYED
 JV4980'BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2716 ***********************************************************************
 JV2716  DESIGNATION -  CAL
 JV2716  PID         -  JV2716
 JV2716  STATE/COUNTY-  MD/MONTGOMERY
 JV2716  COUNTRY     -  US
 JV2716  USGS QUAD   -  KENSINGTON (2016)
 JV2716
 JV2716                         *CURRENT SURVEY CONTROL
 JV2716  ______________________________________________________________________
 JV2716* NAD 83(1991) POSITION- 39 00 55.68423(N) 077 02 32.92966(W)   ADJUSTED
 JV2716* NAVD 88 ORTHO HEIGHT -   111.747 (meters)      366.62  (feet) ADJUSTED
 JV2716  ______________________________________________________________________
 JV2716  GEOID HEIGHT    -        -31.934 (meters)                     GEOID18
 JV2716  LAPLACE CORR    -         -2.90  (seconds)                    DEFLEC18
 JV2716  DYNAMIC HEIGHT  -        111.686 (meters)      366.42  (feet) COMP
 JV2716  MODELED GRAVITY -    980,085.9   (mgal)                       NAVD 88
 JV2716
 JV2716  HORZ ORDER      -  SECOND
 JV2716  VERT ORDER      -  SECOND    CLASS 0
 JV2716
 JV2716.The horizontal coordinates were established by classical geodetic methods
 JV2716.and adjusted by the National Geodetic Survey in January 1992.
 JV2716
 JV2716.The orthometric height was determined by differential leveling and
 JV2716.adjusted by the NATIONAL GEODETIC SURVEY
 JV2716.in June 1991.
 JV2716
 JV2716.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2716.GEOID18 height accuracy estimate available here.
 JV2716
 JV2716.Click photographs - Photos may exist for this station.
 JV2716
 JV2716.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2716
 JV2716.The dynamic height is computed by dividing the NAVD 88
 JV2716.geopotential number by the normal gravity value computed on the
 JV2716.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2716.degrees latitude (g = 980.6199 gals.).
 JV2716
 JV2716.The modeled gravity was interpolated from observed gravity values.
 JV2716
 JV2716. The following values were computed from the NAD 83(1991) position.
 JV2716
 JV2716;                    North         East     Units Scale Factor Converg.
 JV2716;SPC MD       -   149,724.155   396,321.046   MT  0.99995281   -0 01 36.0
 JV2716;SPC MD       -   491,220.00  1,300,263.30   sFT  0.99995281   -0 01 36.0
 JV2716;UTM  18      - 4,320,477.716   323,168.697   MT  0.99998504   -1 17 10.1
 JV2716
 JV2716!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2716!SPC MD       -   0.99998748  x   0.99995281  =   0.99994029
 JV2716!UTM  18      -   0.99998748  x   0.99998504  =   0.99997252
 JV2716
 JV2716_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2316820477(NAD 83)
 JV2716
 JV2716                          SUPERSEDED SURVEY CONTROL
 JV2716
 JV2716  NAD 83(1986)-  39 00 55.68393(N)    077 02 32.94029(W) AD(       ) 2
 JV2716  NAD 27      -  39 00 55.29021(N)    077 02 34.02012(W) AD(       ) 2
 JV2716  NGVD 29             111.96   (m)          367.3    (f) LEVELING    3  
 JV2716  NGVD 29 (11/26/84)  111.961  (m)          367.33   (f) ADJUSTED    2 0
 JV2716
 JV2716.Superseded values are not recommended for survey control.
 JV2716
 JV2716.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2716.See file dsdata.pdf to determine how the superseded data were derived.
 JV2716
 JV2716_MARKER: DE = TRAVERSE STATION DISK
 JV2716_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV2716_SP_SET: CURB
 JV2716_STAMPING: CAL 1958
 JV2716_MARK LOGO: CGS
 JV2716_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2716
 JV2716  HISTORY     - Date     Condition        Report By
 JV2716  HISTORY     - 1958     MONUMENTED       CGS
 JV2716  HISTORY     - 1958     GOOD             CGS
 JV2716  HISTORY     - 1963     GOOD             MDDT
 JV2716  HISTORY     - 1988     GOOD             USPSQD
 JV2716  HISTORY     - 20231025 MARK NOT FOUND   GIRL
 JV2716
 JV2716                          STATION DESCRIPTION
 JV2716
 JV2716'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2716'THIS IS AN UNOCCUPIED TRAVERSE STATION AND MAY BE USED AS AZIMUTH
 JV2716'MARK FOR STATION CALVARY.
 JV2716'
 JV2716'STATION IS LOCATED IN A CURB AT THE JUNCTION OF STATE HIGHWAYS
 JV2716'NO. 97 AND 192 IN THE NORTHWEST EDGE OF SILVER SPRINGS.  STATION IS
 JV2716'44 FEET EAST OF THE APPROXIMATE CENTERLINE OF STATE HIGHWAY NO. 97,
 JV2716'23 PACES SOUTH OF THE APPROXIMATE CENTERLINE OF STATE HIGHWAY
 JV2716'NO. 192, 18 FEET SOUTH OF A POWERLINE POLE AND 11 FEET WEST OF
 JV2716'THE WEST EDGE OF PARKING LOT.  THE MARK IS A STANDARD TRAVERSE
 JV2716'DISK SET IN A DRILL HOLE FLUSH WITH THE TOP OF A CONCRETE CURB
 JV2716'AND THE DISK IS STAMPED CAL 1958.
 JV2716
 JV2716                          STATION RECOVERY (1958)
 JV2716
 JV2716'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2716'AT FOREST GROVE.
 JV2716'AT FOREST GROVE, AT THE INTERSECTION OF FOREST GLENN ROAD AND
 JV2716'GEORGIA AVENUE, ON TOP OF THE SOUTH CURB OF GEORGIA AVENUE, 37.0
 JV2716'FEET SOUTH OF THE EXTENDED SOUTH CURB OF FOREST GLENN ROAD AND
 JV2716'17.7 FEET SOUTH OF POWER LINE POLE NO. 735087.
 JV2716
 JV2716                          STATION RECOVERY (1963)
 JV2716
 JV2716'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 JV2716'STATION FOUND IN GOOD CONDITION AS DESCRIBED.
 JV2716
 JV2716                          STATION RECOVERY (1988)
 JV2716
 JV2716'RECOVERY NOTE BY US POWER SQUADRON 1988 (DTH)
 JV2716'RECOVERED IN GOOD CONDITION.
 JV2716
 JV2716                          STATION RECOVERY (2023)
 JV2716
 JV2716'RECOVERY NOTE BY GIRL SCOUTS OF AMERICA 2023 (JE)
 JV2716'NOT FOUND AFTER A BRIEF SEARCH.  PRESUMED DESTROYED BY NEW CURBING AT
 JV2716'INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0305 ***********************************************************************
 HV0305  DESIGNATION -  CAL
 HV0305  PID         -  HV0305
 HV0305  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0305  COUNTRY     -  US
 HV0305  USGS QUAD   -  ANNAPOLIS (2016)
 HV0305
 HV0305                         *CURRENT SURVEY CONTROL
 HV0305  ______________________________________________________________________
 HV0305* NAD 83(1986) POSITION- 38 58 58.     (N) 076 27 51.     (W)   SCALED
 HV0305* NAVD 88 ORTHO HEIGHT -     1.986 (meters)        6.52  (feet) ADJUSTED
 HV0305  ______________________________________________________________________
 HV0305  GEOID HEIGHT    -        -33.385 (meters)                     GEOID18
 HV0305  DYNAMIC HEIGHT  -          1.985 (meters)        6.51  (feet) COMP
 HV0305  MODELED GRAVITY -    980,076.6   (mgal)                       NAVD 88
 HV0305
 HV0305  VERT ORDER      -  FIRST     CLASS I
 HV0305
 HV0305.The horizontal coordinates were scaled from a map and have
 HV0305.an estimated accuracy of +/- 6 seconds.
 HV0305
 HV0305.The orthometric height was determined by differential leveling and
 HV0305.adjusted by the NATIONAL GEODETIC SURVEY
 HV0305.in June 1991.
 HV0305
 HV0305.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0305.GEOID18 height accuracy estimate available here.
 HV0305
 HV0305.Click photographs - Photos may exist for this station.
 HV0305
 HV0305.The dynamic height is computed by dividing the NAVD 88
 HV0305.geopotential number by the normal gravity value computed on the
 HV0305.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0305.degrees latitude (g = 980.6199 gals.).
 HV0305
 HV0305.The modeled gravity was interpolated from observed gravity values.
 HV0305
 HV0305;                    North         East    Units  Estimated Accuracy
 HV0305;SPC MD       -   146,230.      446,430.      MT  (+/- 180 meters Scaled)
 HV0305
 HV0305_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ731158(NAD 83)
 HV0305
 HV0305                          SUPERSEDED SURVEY CONTROL
 HV0305
 HV0305  NGVD 29 (11/26/84)    2.230  (m)            7.32   (f) ADJUSTED    1 1
 HV0305
 HV0305.Superseded values are not recommended for survey control.
 HV0305
 HV0305.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0305.See file dsdata.pdf to determine how the superseded data were derived.
 HV0305
 HV0305_MARKER: DB = BENCH MARK DISK
 HV0305_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0305_SP_SET: FOUNDATION
 HV0305_STAMPING: CAL 1970
 HV0305_MARK LOGO: CGS
 HV0305_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0305
 HV0305  HISTORY     - Date     Condition        Report By
 HV0305  HISTORY     - 1970     MONUMENTED       NGS
 HV0305  HISTORY     - 1971     GOOD             NGS
 HV0305
 HV0305                          STATION DESCRIPTION
 HV0305
 HV0305'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0305'AT ANNAPOLIS.
 HV0305'AT THE U.S. NAVAL STATION AT ANNAPOLIS, ABOUT 0.1 MILE SOUTHWEST
 HV0305'ALONG GILMORE ROAD FROM THE ADMINISTRATION BUILDING, THENCE 0.3
 HV0305'MILE SOUTHEAST ALONG HALLIGAN ROAD, SET IN THE TOP OF THE
 HV0305'CONCRETE FOUNDATION FOR A METAL BEAM AT THE NORTH CORNER OF A
 HV0305'BUILDING WHICH WAS FORMERLY USED AS A SEAPLANE HANGAR, 1.1 FEET
 HV0305'NORTHWEST OF THE NORTH CORNER OF THE BUILDING, 77.7 FEET SOUTH AND
 HV0305'ACROSS A STREET FROM BENCH MARK B 132, AND ABOUT LEVEL WITH THE
 HV0305'CONCRETE APRON.  NOTE-- THE BUILDING IS THE MORE EASTERLY OF
 HV0305'TWO LARGE BUILDINGS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7047 ***********************************************************************
 HV7047  DESIGNATION -  CALDWELL
 HV7047  PID         -  HV7047
 HV7047  STATE/COUNTY-  MD/CHARLES
 HV7047  COUNTRY     -  US
 HV7047  USGS QUAD   -  ROCK POINT (2016)
 HV7047
 HV7047                         *CURRENT SURVEY CONTROL
 HV7047  ______________________________________________________________________
 HV7047* NAD 83(1993) POSITION- 38 15 21.87914(N) 076 50 46.04985(W)   ADJUSTED
 HV7047* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7047  ______________________________________________________________________
 HV7047  GEOID HEIGHT    -        -33.683 (meters)                     GEOID18
 HV7047  LAPLACE CORR    -         -0.83  (seconds)                    DEFLEC18
 HV7047  HORZ ORDER      -  SECOND
 HV7047
 HV7047.The horizontal coordinates were established by classical geodetic methods
 HV7047.and adjusted by the National Geodetic Survey in November 1994.
 HV7047
 HV7047.The orthometric height was scaled from a topographic map.
 HV7047
 HV7047.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7047.GEOID18 height accuracy estimate available here.
 HV7047
 HV7047.Click photographs - Photos may exist for this station.
 HV7047
 HV7047.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7047
 HV7047. The following values were computed from the NAD 83(1993) position.
 HV7047
 HV7047;                    North         East     Units Scale Factor Converg.
 HV7047;SPC MD       -    65,438.717   413,468.192   MT  1.00000793   +0 05 47.7
 HV7047;SPC MD       -   214,693.52  1,356,520.23   sFT  1.00000793   +0 05 47.7
 HV7047;SPC VA N     - 2,066,727.129 3,644,744.893   MT  0.99996816   +1 01 56.0
 HV7047;SPC VA N     - 6,780,587.26 11,957,800.54   sFT  0.99996816   +1 01 56.0
 HV7047;UTM  18      - 4,235,839.552   338,473.818   MT  0.99992133   -1 08 36.0
 HV7047
 HV7047!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7047!SPC MD       -   1.00000533  x   1.00000793  =   1.00001326
 HV7047!SPC VA N     -   1.00000533  x   0.99996816  =   0.99997349
 HV7047!UTM  18      -   1.00000533  x   0.99992133  =   0.99992666
 HV7047
 HV7047:                Primary Azimuth Mark                     Grid Az
 HV7047:SPC MD       -  BLAKISTON ISLAND LH 1860                 121 14 19.1
 HV7047:SPC VA N     -  BLAKISTON ISLAND LH 1860                 120 18 10.8
 HV7047:UTM  18      -  BLAKISTON ISLAND LH 1860                 122 28 42.8
 HV7047
 HV7047_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3847335839(NAD 83)
 HV7047
 HV7047|---------------------------------------------------------------------|
 HV7047| PID    Reference Object                     Distance      Geod. Az  |
 HV7047|                                                           dddmmss.s |
 HV7047| HV6945 BLAKISTON ISLAND LH 1860            APPROX.10.4 KM 1212006.8 |
 HV7047|---------------------------------------------------------------------|
 HV7047
 HV7047                          SUPERSEDED SURVEY CONTROL
 HV7047
 HV7047  NAD 83(1991)-  38 15 21.87836(N)    076 50 46.05571(W) AD(       ) 2
 HV7047  NAD 83(1986)-  38 15 21.87913(N)    076 50 46.06549(W) AD(       ) 2
 HV7047  NAD 27      -  38 15 21.41300(N)    076 50 47.17600(W) AD(       ) 2
 HV7047  USSD        -  38 15 22.01500(N)    076 50 47.22800(W) AD(       ) 3
 HV7047
 HV7047.Superseded values are not recommended for survey control.
 HV7047
 HV7047.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7047.See file dsdata.pdf to determine how the superseded data were derived.
 HV7047
 HV7047_MARKER: DS = TRIANGULATION STATION DISK
 HV7047_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7047_STAMPING: CALDWELL 1918
 HV7047_MARK LOGO: CGS
 HV7047_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7047
 HV7047  HISTORY     - Date     Condition        Report By
 HV7047  HISTORY     - 1918     MONUMENTED       CGS
 HV7047  HISTORY     - 1924     GOOD             CGS
 HV7047  HISTORY     - 1929     MARK NOT FOUND   CGS
 HV7047
 HV7047                          STATION DESCRIPTION
 HV7047
 HV7047'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 HV7047'ON N SHORE OF POTOMAC RIVER, ON COBB ISLAND, ABOUT 1,500 FEET
 HV7047'ABOVE WICOMICO RIVER, 5 FEET IN FROM HIGH-WATER LINE, AND 6 FEET
 HV7047'BELOW SMALL SHACK USED AS PHONE HOUSE.  MARKED BY A TILE PIPE SET
 HV7047'IN CONCRETE, TOP FLUSH WITH SURFACE AND CENTERED WITH BRASS DISK.
 HV7047'OVER IT IS A LARGE WOODEN TRIPOD.
 HV7047
 HV7047                          STATION RECOVERY (1929)
 HV7047
 HV7047'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (FLP)
 HV7047'THE SITE OF THE STATION WAS VISITED, AND SEARCH WAS MADE, BUT NO
 HV7047'RECOVERY COULD BE MADE.  THE STATION, FROM THE DESCRIPTION, WAS
 HV7047'LOCATED ON A SHIFTING SAND BEACH, AND APPARENTLY HAS BEEN WASHED AWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8829 ***********************************************************************
 HV8829  DESIGNATION -  CALE POLE 1
 HV8829  PID         -  HV8829
 HV8829  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV8829  COUNTRY     -  US
 HV8829  USGS QUAD   -  NORTH BEACH (2016)
 HV8829
 HV8829                         *CURRENT SURVEY CONTROL
 HV8829  ______________________________________________________________________
 HV8829* NAD 83(1991) POSITION- 38 43 22.44941(N) 076 31 32.91809(W)   NO CHECK
 HV8829* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 HV8829  ______________________________________________________________________
 HV8829  GEOID HEIGHT    -        -33.651 (meters)                     GEOID18
 HV8829  LAPLACE CORR    -         -4.52  (seconds)                    DEFLEC18
 HV8829  HORZ ORDER      -  THIRD
 HV8829
 HV8829.The horizontal coordinates were established by classical geodetic methods
 HV8829.and adjusted by the National Geodetic Survey in January 1992.
 HV8829
 HV8829.No horizontal observational check was made to the station.
 HV8829
 HV8829.The orthometric height was scaled from a topographic map.
 HV8829
 HV8829.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8829.GEOID18 height accuracy estimate available here.
 HV8829
 HV8829.Click photographs - Photos may exist for this station.
 HV8829
 HV8829.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8829
 HV8829. The following values were computed from the NAD 83(1991) position.
 HV8829
 HV8829;                    North         East     Units Scale Factor Converg.
 HV8829;SPC MD       -   117,353.448   441,234.954   MT  0.99995339   +0 17 51.4
 HV8829;SPC MD       -   385,017.10  1,447,618.34   sFT  0.99995339   +0 17 51.4
 HV8829;UTM  18      - 4,287,132.475   367,360.156   MT  0.99981665   -0 57 16.6
 HV8829
 HV8829!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8829!SPC MD       -   1.00000463  x   0.99995339  =   0.99995802
 HV8829!UTM  18      -   1.00000463  x   0.99981665  =   0.99982128
 HV8829
 HV8829_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6736087132(NAD 83)
 HV8829
 HV8829                          SUPERSEDED SURVEY CONTROL
 HV8829
 HV8829  NAD 83(1986)-  38 43 22.44747(N)    076 31 32.93145(W) AD(       ) 3
 HV8829
 HV8829.Superseded values are not recommended for survey control.
 HV8829
 HV8829.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8829.See file dsdata.pdf to determine how the superseded data were derived.
 HV8829
 HV8829_MARKER: Z = SEE DESCRIPTION
 HV8829_SETTING: 0 = UNSPECIFIED SETTING
 HV8829_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8829_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8829
 HV8829  HISTORY     - Date     Condition        Report By
 HV8829  HISTORY     - 1987     MONUMENTED       NOS
 HV8829
 HV8829                          STATION DESCRIPTION
 HV8829
 HV8829'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (JDS)
 HV8829'THE STATION IS LOCATED ABOUT 1.25 MI N OF NORTH BEACH AND ABOUT 0.5
 HV8829'MI S OF HOLLAND POINT, AND ON THE W SHORE OF CHESAPEAKE BAY.
 HV8829'
 HV8829'TO REACH THE STATION FROM THE POST OFFICE IN NORTH BEACH, GO N ON
 HV8829'CHESAPEAKE AVE FOR 0.3 MI TO 7TH STREET.  TURN RIGHT AND GO E ON
 HV8829'7TH STREET FOR 0.05 MI TO A T-INTERSECTION.  TURN LEFT AND GO N ON
 HV8829'BAY AVE FOR 0.9 MI TO A FORK.  KEEP RIGHT AND CONTINUE N ON WALNUT
 HV8829'AVE FOR 0.15 MI TO LINDEN AVE.  THE STATION IS NEAR THE SHORELINE
 HV8829'BETWEEN THE HOUSES AT 904 AND 908 LINDEN AVE.
 HV8829'
 HV8829'STATION IS THE CENTER OF A POLE ON THE END OF PIER IS ABOUT 48 M
 HV8829'E OF BAKER ECC.
 HV8829'
 HV8829'DESCRIBED BY J.D. SHEA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8830 ***********************************************************************
 HV8830  DESIGNATION -  CALE POLE 2
 HV8830  PID         -  HV8830
 HV8830  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV8830  COUNTRY     -  US
 HV8830  USGS QUAD   -  NORTH BEACH (2016)
 HV8830
 HV8830                         *CURRENT SURVEY CONTROL
 HV8830  ______________________________________________________________________
 HV8830* NAD 83(1991) POSITION- 38 43 30.73358(N) 076 31 35.39492(W)   NO CHECK
 HV8830* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 HV8830  ______________________________________________________________________
 HV8830  GEOID HEIGHT    -        -33.646 (meters)                     GEOID18
 HV8830  LAPLACE CORR    -         -4.48  (seconds)                    DEFLEC18
 HV8830  HORZ ORDER      -  THIRD
 HV8830
 HV8830.The horizontal coordinates were established by classical geodetic methods
 HV8830.and adjusted by the National Geodetic Survey in January 1992.
 HV8830
 HV8830.No horizontal observational check was made to the station.
 HV8830
 HV8830.The orthometric height was scaled from a topographic map.
 HV8830
 HV8830.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8830.GEOID18 height accuracy estimate available here.
 HV8830
 HV8830.Click photographs - Photos may exist for this station.
 HV8830
 HV8830.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8830
 HV8830. The following values were computed from the NAD 83(1991) position.
 HV8830
 HV8830;                    North         East     Units Scale Factor Converg.
 HV8830;SPC MD       -   117,608.574   441,173.801   MT  0.99995328   +0 17 49.9
 HV8830;SPC MD       -   385,854.13  1,447,417.71   sFT  0.99995328   +0 17 49.9
 HV8830;UTM  18      - 4,287,388.842   367,304.601   MT  0.99981683   -0 57 18.3
 HV8830
 HV8830!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8830!SPC MD       -   1.00000464  x   0.99995328  =   0.99995792
 HV8830!UTM  18      -   1.00000464  x   0.99981683  =   0.99982147
 HV8830
 HV8830_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6730487388(NAD 83)
 HV8830
 HV8830                          SUPERSEDED SURVEY CONTROL
 HV8830
 HV8830  NAD 83(1986)-  38 43 30.73166(N)    076 31 35.40825(W) AD(       ) 3
 HV8830
 HV8830.Superseded values are not recommended for survey control.
 HV8830
 HV8830.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8830.See file dsdata.pdf to determine how the superseded data were derived.
 HV8830
 HV8830_MARKER: Z = SEE DESCRIPTION
 HV8830_SETTING: 0 = UNSPECIFIED SETTING
 HV8830_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8830_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8830
 HV8830  HISTORY     - Date     Condition        Report By
 HV8830  HISTORY     - 1987     MONUMENTED       NOS
 HV8830
 HV8830                          STATION DESCRIPTION
 HV8830
 HV8830'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (JDS)
 HV8830'THE STATION IS LOCATED ABOUT 1.25 MI N OF NORTH BEACH AND ABOUT
 HV8830'0.5 MI S OF HOLLAND POINT, AND ON THE SHORE OF CHESAPEAKE BAY.
 HV8830'
 HV8830'TO REACH THE STATION FROM THE POST OFFICE IN NORTH BEACH, GO NORTH
 HV8830'ON CHESAPEAKE AVE FOR 0.3 MI TO 7TH STREET.  TURN RIGHT AND GO E ON
 HV8830'7TH STREET FOR 0.05 MI TO A T-INTERSECTION.  TURN LEFT AND GO N ON
 HV8830'BAY AVE FOR 0.9 MI TO A FORK.  KEEP RIGHT AND CONTINUE N ON WALNUT
 HV8830'AVE FOR 0.15 MI TO LINDEN AVE.  THE STATION IS NEAR THE SHORELINE
 HV8830'BETWEEN THE HOUSES OF 904 AND 908 LINDEN AVE.
 HV8830'
 HV8830'STATION IS A GALVANIZED NAIL AND SIGNAL CLOTH SET INTO A PILING OF
 HV8830'A BOAT LIFT ON THE N SIDE OF AN ADJACENT PIER.  STATION IS 238 M
 HV8830'N OF BAKER ECC ALONG THE SHORELINE.
 HV8830'
 HV8830'DESCRIBED BY ART FRANCIS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7163 ***********************************************************************
 HV7163  DESIGNATION -  CALF
 HV7163  PID         -  HV7163
 HV7163  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7163  COUNTRY     -  US
 HV7163  USGS QUAD   -  SOUTH RIVER (2016)
 HV7163
 HV7163                         *CURRENT SURVEY CONTROL
 HV7163  ______________________________________________________________________
 HV7163* NAD 83(1991) POSITION- 38 53 17.53199(N) 076 31 41.63581(W)   ADJUSTED
 HV7163* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7163  ______________________________________________________________________
 HV7163  GEOID HEIGHT    -        -33.411 (meters)                     GEOID18
 HV7163  LAPLACE CORR    -         -4.02  (seconds)                    DEFLEC18
 HV7163  HORZ ORDER      -  THIRD
 HV7163
 HV7163.The horizontal coordinates were established by classical geodetic methods
 HV7163.and adjusted by the National Geodetic Survey in January 1992.
 HV7163
 HV7163.The orthometric height was scaled from a topographic map.
 HV7163
 HV7163.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7163.GEOID18 height accuracy estimate available here.
 HV7163
 HV7163.Click photographs - Photos may exist for this station.
 HV7163
 HV7163.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7163
 HV7163. The following values were computed from the NAD 83(1991) position.
 HV7163
 HV7163;                    North         East     Units Scale Factor Converg.
 HV7163;SPC MD       -   135,701.538   440,929.550   MT  0.99994987   +0 17 46.0
 HV7163;SPC MD       -   445,214.13  1,446,616.37   sFT  0.99994987   +0 17 46.0
 HV7163;UTM  18      - 4,305,480.386   367,456.339   MT  0.99981633   -0 57 34.4
 HV7163
 HV7163!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7163!SPC MD       -   1.00000512  x   0.99994987  =   0.99995499
 HV7163!UTM  18      -   1.00000512  x   0.99981633  =   0.99982145
 HV7163
 HV7163:                Primary Azimuth Mark                     Grid Az
 HV7163:SPC MD       -  ETNA                                     126 24 34.4
 HV7163:UTM  18      -  ETNA                                     127 39 54.8
 HV7163
 HV7163_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6745605480(NAD 83)
 HV7163
 HV7163|---------------------------------------------------------------------|
 HV7163| PID    Reference Object                     Distance      Geod. Az  |
 HV7163|                                                           dddmmss.s |
 HV7163| CX2162 CALF RP                               4.960 METERS 03208     |
 HV7163| HV7125 ETNA                                APPROX. 1.1 KM 1264220.4 |
 HV7163|---------------------------------------------------------------------|
 HV7163
 HV7163                          SUPERSEDED SURVEY CONTROL
 HV7163
 HV7163  NAD 83(1986)-  38 53 17.52876(N)    076 31 41.64756(W) AD(       ) 3
 HV7163  NAD 27      -  38 53 17.12200(N)    076 31 42.77800(W) AD(       ) 3
 HV7163  USSD        -  38 53 17.48300(N)    076 31 42.60200(W) AD(       ) 3
 HV7163
 HV7163.Superseded values are not recommended for survey control.
 HV7163
 HV7163.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7163.See file dsdata.pdf to determine how the superseded data were derived.
 HV7163
 HV7163_MARKER: N = NAIL
 HV7163_SETTING: 0 = UNSPECIFIED SETTING
 HV7163
 HV7163  HISTORY     - Date     Condition        Report By
 HV7163  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7163  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV7163  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7163  HISTORY     - 1977     SEE DESCRIPTION  NGS
 HV7163
 HV7163                          STATION DESCRIPTION
 HV7163
 HV7163'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7163'ON THE NORTHERN SHORE OF UPPER RHODE RIVER, BETWEEN WHITEMARSH AND
 HV7163'WATERS CREEKS, AND ABOUT 300 YARDS NW OF THE EXTREME SE END OF
 HV7163'POINT OF LAND BETWEEN THOSE CREEKS, ABREAST OF HIGH ISLAND, ABOUT
 HV7163'1/4 MILE W BY N OF CARR WHARF, AND ABOUT 25 FEET BACK FROM EDGE OF
 HV7163'A BANK 15 FEET HIGH.
 HV7163'
 HV7163'STATION MARK IS NAIL IN PINE STUB FLUSH WITH GROUND.
 HV7163'
 HV7163'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7163'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7163'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7163'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7163'IS 4.96 METERS (16.27 FEET) FROM STATION IN BEARING N 32 DEG 8
 HV7163'MIN E.  DISTANCES FROM THE STATION OF OTHER POINTS OF REFERENCE
 HV7163'ARE AS FOLLOWS--CUPOLA ON LARGE HOUSE ON OPPOSITE SHORE, 1/2 MILE,
 HV7163'S 24 DEG 58 MIN W. CHIMNEY ON SMALL WHITE HOUSE ON OPPOSITE SHORE,
 HV7163'1/2 MILE, S 84 DEG 56 MIN W.  W CHIMNEY ON RED-ROOF HOUSE ON FIRST
 HV7163'HILL N, 1 MILE, N 80 DEG 44 MIN W.  NAIL IN BLAZE ON 4-INCH PINE
 HV7163'TREE, 5.17 METERS (16.96 FEET), N 8 DEG 21 MIN W.  SW CORNER OF
 HV7163'CARR WHARF, 300 YARDS, N 153 DEG 37 MIN E.  NAIL IN BLAZE OF
 HV7163'2-INCH WHITE-OAK TREE, 9.15 METERS (30.02 FEET), S 62 DEG 39 MIN E.
 HV7163
 HV7163                          STATION RECOVERY (1943)
 HV7163
 HV7163'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7163'THE REFERENCE MARK WAS FOUND IN GOOD CONDITION AMIDST THE SMALL
 HV7163'TREES AT THE WATERS EDGE NEAR THE CABINS AT CAMP LETTS.  IT IS
 HV7163'11.8 METERS NE OF THE EDGE OF THE BANK AND 19.9 METERS W OF THE NW
 HV7163'CORNER OF CABIN 2.  THE STATION ITSELF WAS NOT FOUND.  IT IS
 HV7163'BELIEVED TO HAVE ROTTED OUT.
 HV7163
 HV7163                          STATION RECOVERY (1960)
 HV7163
 HV7163'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7163'STATION SEARCHED FOR BUT COULD NOT BE FOUND.  IT IS BELIEVED THE
 HV7163'STATION WAS DESTROYED DUE TO EROSION.  REFERENCE MARK M.S.F.C.,
 HV7163'STAMPED M.S.F.C. WAS FOUND IN GOOD CONDITION.  THE REFERENCE MARK
 HV7163'IS ON THE PROPERTY OWNED BY THE WASHINGTON, D.C., Y.M.C.A.  IT IS
 HV7163'25 FT NORTH OF THE EDGE OF THE BLUFF, 63.3 FT WEST OF CABIN 17,
 HV7163'AND 79.9 FT SOUTHWEST OF CABIN 16.
 HV7163'
 HV7163'TO REACH STATION FROM JUNCTION OF HIGHWAYS 50 AND 2 IN PAROLE
 HV7163'MARYLAND GO SOUTH ON ROUTE 2 FOR 4.3 MILES TO A T-ROAD, LEFT WITH
 HV7163'A SIGN READING MAYO 5 1/2.  TURN EAST ON THIS ROAD AND GO 2.7
 HV7163'MILES TO THE LETTS CAMP.  TURN SOUTH ON A GRAVEL ROAD UNDER THE
 HV7163'CAMP LETTS SIGN AND PROCEED 1 MILE TO THE STATION.
 HV7163
 HV7163                          STATION RECOVERY (1977)
 HV7163
 HV7163'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HV7163'THE REFERENCE MARK WAS FOUND IN GOOD CONDITION, THE STATION MARK
 HV7163'HAS BEEN DESTROYED BY EROSION ALONG EDGE OF RIVER BANK.
 HV7163'
 HV7163'STATION IS LOCATED ABOUT 5 MILES SOUTH-SOUTHEAST OF EDGEWATER,
 HV7163'ABOUT 1 MILE SOUTH-SOUTHWEST OF HOLLY HILL HARBOR, ON THE NORTH
 HV7163'SHORE OF THE UPPER RHODE RIVER AT THE CAMP LETTS YMCA CAMP.
 HV7163'
 HV7163'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 2 AND
 HV7163'214, ABOUT 4 MILES SOUTHWEST OF ANNAPOLIS, GO EASTERLY ON STATE
 HV7163'HIGHWAY 214 FOR 2.65 MILES TO FORKS, KEEP RIGHT FOR ABOUT 150
 HV7163'FEET TO A BRICK ENTRANCE TO CAMP LETTS, GO SOUTHEASTERLY ON GRAVEL
 HV7163'ROAD FOR 1.4 MILES TO THE CAMP LETTS YMCA CAMP AND THE STATION
 HV7163'BETWEEN THE CABINS AND THE SHORE.
 HV7163'
 HV7163'THE REFERENCE MARK IS A 10 INCH SQUARE CONCRETE MONUMENT
 HV7163'PROJECTING ABOUT 10 INCHES ABOVE THE GROUND AND HAS A TRIANGLE
 HV7163'WITH A 3/4 INCH HOLE IN THE CENTER AND HAS THE LETTERS MDSFCAND
 HV7163'USCS ON TOP.  IT IS 93.7 FEET NORTHWEST OF NORTHWEST CORNER OF
 HV7163'CABIN NO. 21, 65.5 FEET WEST OF THE SOUTHWEST CORNER OF CABIN NO.
 HV7163'17 36.4 FEET SOUTHWEST OF 3 FOOT OAK TREE AND 21.5
 HV7163'NORTH-NORTHEAST OF FENCE AT EDGE OF DROP TO SHORELINE.
 HV7163'
 HV7163'NO AZIMUTH MARK AT THIS STATION.
 HV7163'
 HV7163'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 1 MILE
 HV7163'SOUTH-SOUTHWEST OF HOLLY HILL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 UA0030 ***********************************************************************
 UA0030  DESIGNATION -  CALIB HRD STAND
 UA0030  PID         -  UA0030
 UA0030  STATE/COUNTY-  MD/PRINCE GEORGES
 UA0030  COUNTRY     -  US
 UA0030  USGS QUAD   -  ANACOSTIA (2016)
 UA0030
 UA0030                         *CURRENT SURVEY CONTROL
 UA0030  ______________________________________________________________________
 UA0030* NAD 83(1986) POSITION- 38 47 55.     (N) 076 52 32.     (W)   SCALED
 UA0030* NAVD 88 ORTHO HEIGHT -    78.490 (meters)      257.51  (feet) ADJUSTED
 UA0030  ______________________________________________________________________
 UA0030  GEOID HEIGHT    -        -32.567 (meters)                     GEOID18
 UA0030  DYNAMIC HEIGHT  -         78.446 (meters)      257.37  (feet) COMP
 UA0030  MODELED GRAVITY -    980,067.7   (mgal)                       NAVD 88
 UA0030
 UA0030  VERT ORDER      -  FIRST     CLASS II
 UA0030
 UA0030.This mark is at Andrews Afb Airport (ADW)
 UA0030
 UA0030.The horizontal coordinates were scaled from a map and have
 UA0030.an estimated accuracy of +/- 6 seconds.
 UA0030
 UA0030.The orthometric height was determined by differential leveling and
 UA0030.adjusted by the NATIONAL GEODETIC SURVEY
 UA0030.in August 1994.
 UA0030
 UA0030.Significant digits in the geoid height do not necessarily reflect accuracy.
 UA0030.GEOID18 height accuracy estimate available here.
 UA0030
 UA0030.Click photographs - Photos may exist for this station.
 UA0030
 UA0030.The dynamic height is computed by dividing the NAVD 88
 UA0030.geopotential number by the normal gravity value computed on the
 UA0030.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 UA0030.degrees latitude (g = 980.6199 gals.).
 UA0030
 UA0030.The modeled gravity was interpolated from observed gravity values.
 UA0030
 UA0030;                    North         East    Units  Estimated Accuracy
 UA0030;SPC MD       -   125,660.      410,810.      MT  (+/- 180 meters Scaled)
 UA0030
 UA0030_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH371960(NAD 83)
 UA0030
 UA0030                          SUPERSEDED SURVEY CONTROL
 UA0030
 UA0030.No superseded survey control is available for this station.
 UA0030
 UA0030_MARKER: DD = SURVEY DISK
 UA0030_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 UA0030_STAMPING: CALIB HRD STAND 1968
 UA0030_MARK LOGO: CGS
 UA0030_MAGNETIC: N = NO MAGNETIC MATERIAL
 UA0030_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 UA0030
 UA0030  HISTORY     - Date     Condition        Report By
 UA0030  HISTORY     - 1968     MONUMENTED       CGS
 UA0030  HISTORY     - 19880615 GOOD             NGS
 UA0030  HISTORY     - 19940725 GOOD             NGS
 UA0030
 UA0030                          STATION DESCRIPTION
 UA0030
 UA0030'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 UA0030'LOCATED AT ANDREWS AIR FORCE BASE ABOUT 2500 FT (762.0 M) S OF THE
 UA0030'CONTROL TOWER, ABOUT 1300 FT (396.2 M) W OF RUNWAY IL IN THE CENTER OF
 UA0030'THE COMPASS ROSE CALIBRATION CIRCLE.  A 4 INCH BRASS DISK WITH 4 INCH
 UA0030'X MACHINE-CUT IN THE CENTER.  THE DISK IS STAMPED CALIB HRD STAND 1968
 UA0030'IN THIS NE QUADRANT.
 UA0030
 UA0030                          STATION RECOVERY (1994)
 UA0030
 UA0030'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994
 UA0030'LOCATED AT ANDREWS AIR FORCE BASE ABOUT 762 M (2500.0 FT) SOUTH OF THE
 UA0030'CONTROL TOWER.  396 M (1299.2 FT) WEST OF RUNWAY EDGE.  IN THE CENTER
 UA0030'OF THE COMPASS ROSE CALIBRATION CIRCLE.  A 4 INCH BRASS DISK WITH A 4
 UA0030'INCH X MACHINE-CUT IN THE CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3741 ***********************************************************************
 JV3741  DESIGNATION -  CALVARY
 JV3741  PID         -  JV3741
 JV3741  STATE/COUNTY-  MD/MONTGOMERY
 JV3741  COUNTRY     -  US
 JV3741  USGS QUAD   -  KENSINGTON (2016)
 JV3741
 JV3741                         *CURRENT SURVEY CONTROL
 JV3741  ______________________________________________________________________
 JV3741* NAD 83(1991) POSITION- 39 00 44.18103(N) 077 02 26.52824(W)   ADJUSTED
 JV3741* NAVD 88 ORTHO HEIGHT -   108.896 (meters)      357.27  (feet) ADJUSTED
 JV3741  ______________________________________________________________________
 JV3741  GEOID HEIGHT    -        -31.939 (meters)                     GEOID18
 JV3741  LAPLACE CORR    -         -2.90  (seconds)                    DEFLEC18
 JV3741  DYNAMIC HEIGHT  -        108.837 (meters)      357.08  (feet) COMP
 JV3741  MODELED GRAVITY -    980,085.8   (mgal)                       NAVD 88
 JV3741
 JV3741  HORZ ORDER      -  SECOND
 JV3741  VERT ORDER      -  SECOND    CLASS 0
 JV3741
 JV3741.The horizontal coordinates were established by classical geodetic methods
 JV3741.and adjusted by the National Geodetic Survey in January 1992.
 JV3741
 JV3741.The orthometric height was determined by differential leveling and
 JV3741.adjusted by the NATIONAL GEODETIC SURVEY
 JV3741.in June 1991.
 JV3741
 JV3741.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3741.GEOID18 height accuracy estimate available here.
 JV3741
 JV3741.Click photographs - Photos may exist for this station.
 JV3741
 JV3741.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3741
 JV3741.The dynamic height is computed by dividing the NAVD 88
 JV3741.geopotential number by the normal gravity value computed on the
 JV3741.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3741.degrees latitude (g = 980.6199 gals.).
 JV3741
 JV3741.The modeled gravity was interpolated from observed gravity values.
 JV3741
 JV3741. The following values were computed from the NAD 83(1991) position.
 JV3741
 JV3741;                    North         East     Units Scale Factor Converg.
 JV3741;SPC MD       -   149,369.369   396,474.883   MT  0.99995268   -0 01 32.0
 JV3741;SPC MD       -   490,056.00  1,300,768.01   sFT  0.99995268   -0 01 32.0
 JV3741;UTM  18      - 4,320,119.623   323,314.704   MT  0.99998441   -1 17 05.7
 JV3741
 JV3741!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3741!SPC MD       -   0.99998793  x   0.99995268  =   0.99994061
 JV3741!UTM  18      -   0.99998793  x   0.99998441  =   0.99997234
 JV3741
 JV3741:                Primary Azimuth Mark                     Grid Az
 JV3741:SPC MD       -  FOREST GLEN RAD STA WOL TWR              203 42 29.3
 JV3741:UTM  18      -  FOREST GLEN RAD STA WOL TWR              204 58 03.0
 JV3741
 JV3741_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2331420119(NAD 83)
 JV3741
 JV3741|---------------------------------------------------------------------|
 JV3741| PID    Reference Object                     Distance      Geod. Az  |
 JV3741|                                                           dddmmss.s |
 JV3741| JV3742 CALVARY RM 2                         15.118 METERS 00701     |
 JV3741| JV3740 CALVARY RM 1                         21.485 METERS 15833     |
 JV3741| CJ9797 FOREST GLEN RAD STA WOL TWR                        2034057.3 |
 JV3741| JV2717 CALVARY 2                            84.616 METERS 20355     |
 JV3741| JV4310 SILVER SPR WOODSIDE WSSC TANK       301.200 METERS 20937     |
 JV3741| JV2716 CAL                                 386.729 METERS 33632     |
 JV3741| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 3.4 KM 3384255.8 |
 JV3741| JV4306 WHEATON RAD STA WTOP CEN TOWER      APPROX. 3.3 KM 3520029.2 |
 JV3741|---------------------------------------------------------------------|
 JV3741
 JV3741                          SUPERSEDED SURVEY CONTROL
 JV3741
 JV3741  NAD 83(1986)-  39 00 44.18047(N)    077 02 26.53875(W) AD(       ) 2
 JV3741  NAD 27      -  39 00 43.78595(N)    077 02 27.61838(W) AD(       ) 2
 JV3741  NGVD 29             109.11   (m)          358.0    (f) LEVELING    3  
 JV3741  NGVD 29 (11/26/84)  109.111  (m)          357.98   (f) ADJUSTED    2 0
 JV3741
 JV3741.Superseded values are not recommended for survey control.
 JV3741
 JV3741.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3741.See file dsdata.pdf to determine how the superseded data were derived.
 JV3741
 JV3741_MARKER: DS = TRIANGULATION STATION DISK
 JV3741_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3741_STAMPING: CALVARY 1958
 JV3741_MARK LOGO: CGS
 JV3741_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3741+STABILITY: SURFACE MOTION
 JV3741
 JV3741  HISTORY     - Date     Condition        Report By
 JV3741  HISTORY     - 1958     MONUMENTED       CGS
 JV3741  HISTORY     - 1960     SEE DESCRIPTION  CGS
 JV3741
 JV3741                          STATION DESCRIPTION
 JV3741
 JV3741'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV3741'STATION IS LOCATED ON PLAY GROUNDS OF CALVARY LUTHERAN CHURCH AND
 JV3741'SCHOOL WHICH IS IN THE NORTHWEST EDGE OF SILVER SPRINGS ABOUT 0.25
 JV3741'MILE SOUTHEAST OF THE JUNCTION OF STATE HIGHWAYS NO. 97 AND 192.
 JV3741'STATION IS 33 FEET SOUTH OF LOCUST TREE, 63 FEET WEST OF
 JV3741'APPROXIMATE CENTERLINE OF WOODLAND DRIVE, ABOUT 50 YARDS NORTH OF
 JV3741'NORTHEAST CORNER OF SCHOOL BUILDING AND AT THE WEST EDGE OF
 JV3741'PLAY GROUNDS.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED
 JV3741'CALVART 1958.
 JV3741'
 JV3741'REFERENCE MARK NO. 1 IS 65 FEET WEST OF APPROXIMATE CENTERLINE OF
 JV3741'WOODLAND DRIVE AND 65-1/2 FEET SOUTH OF APPROXIMATE CENTERLINE OF
 JV3741'LANSDOWNE WAY.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED
 JV3741'CALVARY NO 1 1958.
 JV3741'
 JV3741'REFERENCE MARK NO. 2 IS 24-1/2 FEET SOUTHEAST OF LOCUST TREE, 52-1/2
 JV3741'FEET WEST OF APPROXIMATE CENTERLINE OF WOODLAND DRIVE AND 34 PACES
 JV3741'NORTH OF NORTHEAST CORNER OF SCHOOL.  THE MARK IS SET FLUSH AND THE
 JV3741'DISK IS STAMPED CALVARY NO 2 1958.
 JV3741'
 JV3741'TRAVERSE STATION CAL IS 44 FEET EAST OF THE APPROXIMATE CENTERLINE
 JV3741'OF STATE HIGHWAY NO. 97, 23 PACES SOUTH OF APPROXIMATE CENTERLINE OF
 JV3741'STATE HIGHWAY NO. 192, 18 FEET SOUTH OF POWERLINE POLE AND 11 FEET
 JV3741'WEST OF WEST EDGE OF PARKING LOT.  THE MARK IS A STANDARD TRAVERSE
 JV3741'DISK SET IN A DRILL HOLE FLUSH WITH THE TOP OF CONCRETE CURB AND
 JV3741'THE DISK IS STAMPED CAL 1958.
 JV3741'
 JV3741'TO REACH FROM THE SIGNAL LIGHT AT THE JUNCTION OF STATE HIGHWAYS
 JV3741'NO. 97 AND 192 IN THE NORTHWEST EDGE OF SILVER SPRINGS, GO SOUTHERLY
 JV3741'ON STATE HIGHWAY NO. 97 FOR 0.2 MILE TO LANSDOWNE WAY LEFT.  TURN
 JV3741'LEFT AND GO EASTERLY ON LANSDOWNE WAY FOR 0.05 MILE TO WOODLAND DRIVE
 JV3741'RIGHT.  TURN RIGHT AND GO SOUTHERLY ON WOODLAND DRIVE FOR ABOUT
 JV3741'100 FEET TO STATION ON RIGHT ATOP A SMALL CUT EMBANKMENT AS
 JV3741'DESCRIBED.
 JV3741'
 JV3741'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV3741
 JV3741                          STATION RECOVERY (1960)
 JV3741
 JV3741'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (JLA)
 JV3741'STATION AND ALL MARKS WERE RECOVERED AS DESCRIBED AND FOUND TO BE IN
 JV3741'GOOD CONDITION.  DISTANCES AND DIRECTIONS TO THE REFERENCE MARKS DID
 JV3741'NOT CHECK.  THE 1960 DISTANCE AND DIRECTION MEASUREMENTS ARE AS
 JV3741'SHOWN BELOW.  A NEW STATION WAS ESTABLISHED AT THIS TIME AS STATION
 JV3741'LOCATION IS THE SITE OF A NEW CHURCH BUILDING.  STATION MARK
 JV3741'AND BOTH REFERENCE MARKS WERE DESTROYED AT THIS TIME.
 JV3741'
 JV3741'NEW STATION IS 25.3 FEET NORTHWEST OF THE SOUTHWEST CORNER OF THE
 JV3741'CALVARY LUTHERAN CHURCH, 19.4 FEET WEST OF THE NORTHWEST CORNER OF
 JV3741'THE BUILDING, 9.7 FEET EAST OF THE EAST EDGE OF SIDEWALK ALONG THE
 JV3741'STREET AND 6.8 FEET SOUTH OF THE SOUTH EDGE OF THE SIDEWALK LEADING
 JV3741'INTO THE CHURCH.  THE MARK IS SET 6 INCHES BELOW THE SURFACE AND THE
 JV3741'DISK IS STAMPED.  CALVARY 2 1960.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6272 ***********************************************************************
 JV6272  FBN         -  This is a Federal Base Network Control Station.
 JV6272  DESIGNATION -  CALVARY
 JV6272  PID         -  JV6272
 JV6272  STATE/COUNTY-  MD/HARFORD
 JV6272  COUNTRY     -  US
 JV6272  USGS QUAD   -  EDGEWOOD (2016)
 JV6272
 JV6272                         *CURRENT SURVEY CONTROL
 JV6272  ______________________________________________________________________
 JV6272* NAD 83(2011) POSITION- 39 29 30.57624(N) 076 16 11.28227(W)   ADJUSTED
 JV6272* NAD 83(2011) ELLIP HT-    12.575 (meters)        (06/27/12)   ADJUSTED
 JV6272* NAD 83(2011) EPOCH   -  2010.00
 JV6272* NAVD 88 ORTHO HEIGHT -    45.595 (meters)      149.59  (feet) ADJUSTED
 JV6272  ______________________________________________________________________
 JV6272  GEOID HEIGHT    -        -33.028 (meters)                     GEOID18
 JV6272  NAD 83(2011) X  -  1,169,849.923 (meters)                     COMP
 JV6272  NAD 83(2011) Y  - -4,787,948.320 (meters)                     COMP
 JV6272  NAD 83(2011) Z  -  4,034,611.275 (meters)                     COMP
 JV6272  LAPLACE CORR    -         -2.19  (seconds)                    DEFLEC18
 JV6272  DYNAMIC HEIGHT  -         45.572 (meters)      149.51  (feet) COMP
 JV6272  MODELED GRAVITY -    980,114.3   (mgal)                       NAVD 88
 JV6272
 JV6272  VERT ORDER      -  FIRST     CLASS II
 JV6272
 JV6272  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6272  Standards:
 JV6272         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6272            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6272  -------------------------------------------------------------------
 JV6272  NETWORK    0.42   0.80           0.18   0.16   0.41      0.00919468
 JV6272  -------------------------------------------------------------------
 JV6272  Click here for local accuracies and other accuracy information.
 JV6272
 JV6272.The horizontal coordinates were established by GPS observations
 JV6272.and adjusted by the National Geodetic Survey in June 2012.
 JV6272
 JV6272.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6272.been affixed to the stable North American tectonic plate. See 
 JV6272.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6272
 JV6272.The horizontal coordinates are valid at the epoch date displayed above
 JV6272.which is a decimal equivalence of Year/Month/Day.
 JV6272
 JV6272.The orthometric height was determined by differential leveling and
 JV6272.adjusted by the NATIONAL GEODETIC SURVEY
 JV6272.in June 1991.
 JV6272
 JV6272.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6272.GEOID18 height accuracy estimate available here.
 JV6272
 JV6272.Click photographs - Photos may exist for this station.
 JV6272
 JV6272.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6272
 JV6272.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6272
 JV6272.The ellipsoidal height was determined by GPS observations
 JV6272.and is referenced to NAD 83.
 JV6272
 JV6272.The dynamic height is computed by dividing the NAVD 88
 JV6272.geopotential number by the normal gravity value computed on the
 JV6272.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6272.degrees latitude (g = 980.6199 gals.).
 JV6272
 JV6272.The modeled gravity was interpolated from observed gravity values.
 JV6272
 JV6272. The following values were computed from the NAD 83(2011) position.
 JV6272
 JV6272;                    North         East     Units Scale Factor Converg.
 JV6272;SPC MD       -   202,858.687   462,814.106   MT  1.00000758   +0 27 29.9
 JV6272;SPC MD       -   665,545.54  1,518,415.95   sFT  1.00000758   +0 27 29.9
 JV6272;UTM  18      - 4,372,126.996   390,809.280   MT  0.99974679   -0 48 27.5
 JV6272
 JV6272!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6272!SPC MD       -   0.99999803  x   1.00000758  =   1.00000561
 JV6272!UTM  18      -   0.99999803  x   0.99974679  =   0.99974482
 JV6272
 JV6272_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9080972126(NAD 83)
 JV6272
 JV6272                          SUPERSEDED SURVEY CONTROL
 JV6272
 JV6272  NAD 83(2007)-  39 29 30.57649(N)    076 16 11.28333(W) AD(2002.00) 0
 JV6272  ELLIP H (02/10/07)   12.599  (m)                       GP(2002.00)    
 JV6272  ELLIP H (02/12/02)   12.592  (m)                       GP(       ) 4 1
 JV6272  NAD 83(1991)-  39 29 30.57605(N)    076 16 11.28365(W) AD(       ) B
 JV6272  ELLIP H (10/23/91)   12.570  (m)                       GP(       ) 4 1
 JV6272  NAD 83(1986)-  39 29 30.57071(N)    076 16 11.29080(W) AD(       ) 1
 JV6272  NAVD 88              45.60   (m)          149.6    (f) LEVELING    3  
 JV6272  NGVD 29              45.84   (m)          150.4    (f) LEVELING    3  
 JV6272  NGVD 29              45.95   (m)          150.8    (f) LEVELING    3  
 JV6272  NGVD 29              45.84   (m)          150.4    (f) LEVELING    3  
 JV6272
 JV6272.Superseded values are not recommended for survey control.
 JV6272
 JV6272.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6272.See file dsdata.pdf to determine how the superseded data were derived.
 JV6272
 JV6272_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6272_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6272_STAMPING: CALVARY 1989 18
 JV6272_MARK LOGO: MD-025
 JV6272_PROJECTION: RECESSED 3 CENTIMETERS
 JV6272_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6272_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6272+STABILITY: SURFACE MOTION
 JV6272_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6272+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2016
 JV6272
 JV6272  HISTORY     - Date     Condition        Report By
 JV6272  HISTORY     - 1989     MONUMENTED       RDA
 JV6272  HISTORY     - 19901022 GOOD             NGS
 JV6272  HISTORY     - 19911112 GOOD             MDSHA
 JV6272  HISTORY     - 19930511 GOOD             NOS
 JV6272  HISTORY     - 19931209 GOOD             GEOMET
 JV6272  HISTORY     - 19950221 GOOD             MCCRON
 JV6272  HISTORY     - 20000327 GOOD             MDSHA
 JV6272  HISTORY     - 20020929 GOOD             JCLS
 JV6272  HISTORY     - 20021001 GOOD             JCLS
 JV6272  HISTORY     - 20050202 GOOD             NC-049
 JV6272  HISTORY     - 20060728 GOOD             GEOMET
 JV6272  HISTORY     - 20090113 GOOD             GWS
 JV6272  HISTORY     - 20160516 POOR             USPSQD
 JV6272
 JV6272                          STATION DESCRIPTION
 JV6272
 JV6272'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6272'THE STATION IS LOCATED IN SOUTHEAST HARFORD COUNTY, MARYLAND ABOUT
 JV6272'1.5 MILES NORTHEAST OF THE VILLAGE OF ABINGDON.  TO REACH THE STATION
 JV6272'FROM THE INTERSECTION OF STATE HIGHWAY 24 AND STATE HIGHWAY 7 PROCEED
 JV6272'NORTHEAST ALONG HIGHWAY 7 2.75 MILES TO ITS INTERSECTION WITH STATE
 JV6272'HIGHWAY 136, CALVARY ROAD.  TURN LEFT AND PROCEED NORTH ALONG CALVARY
 JV6272'ROAD 1.3 MILES TO ITS INTERSECTION WITH GOAT HILL ROAD AND THE
 JV6272'STATION ON THE RIGHT.  THE STATION IS A STANDARD HARFORD COUNTY
 JV6272'STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 18
 JV6272'CALVARY 1989.  THE STATION IS 33.2 FEET EAST OF THE CENTERLINE OF
 JV6272'HIGHWAY 136, CALVARY ROAD, 31.3 FEET SOUTH OF THE CENTERLINE OF GOAT
 JV6272'HILL ROAD, 69.3 FEET NORTH OF G AND E POWER POLE NUMBER 81753, 4.9
 JV6272'FEET WEST OF AN EXISTING GEOLOGICAL SURVEY BENCH MARK ON THE BLUE
 JV6272'CONTROL MAP MARKED BM151.
 JV6272
 JV6272                          STATION RECOVERY (1990)
 JV6272
 JV6272'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6272'RECOVERED IN GOOD CONDITION.
 JV6272
 JV6272                          STATION RECOVERY (1991)
 JV6272
 JV6272'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6272'RECOVERED IN GOOD CONDITION.
 JV6272
 JV6272                          STATION RECOVERY (1993)
 JV6272
 JV6272'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1993
 JV6272'RECOVERED IN GOOD CONDITION.
 JV6272
 JV6272                          STATION RECOVERY (1993)
 JV6272
 JV6272'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6272'RECOVERED IN GOOD CONDITION.
 JV6272
 JV6272                          STATION RECOVERY (1995)
 JV6272
 JV6272'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6272'RECOVERED AS DESCRIBED.
 JV6272
 JV6272                          STATION RECOVERY (2000)
 JV6272
 JV6272'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6272'RECOVERED AS DESCRIBED.
 JV6272
 JV6272                          STATION RECOVERY (2002)
 JV6272
 JV6272'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2002 (MRY)
 JV6272'RECOVERED IN GOOD CONDITION.
 JV6272
 JV6272                          STATION RECOVERY (2002)
 JV6272
 JV6272'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2002
 JV6272'RECOVERED IN GOOD CONDITION.
 JV6272
 JV6272                          STATION RECOVERY (2005)
 JV6272
 JV6272'RECOVERY NOTE BY CRAVEN COUNTY NORTH CAROLINA 2005 (RR)
 JV6272'RECOVERED IN GOOD CONDITION.
 JV6272
 JV6272                          STATION RECOVERY (2006)
 JV6272
 JV6272'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2006 (KNT)
 JV6272'RECOVERED IN GOOD CONDITION.
 JV6272
 JV6272                          STATION RECOVERY (2009)
 JV6272
 JV6272'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (RHG)
 JV6272'RECOVERED IN GOOD CONDITION.
 JV6272
 JV6272                          STATION RECOVERY (2016)
 JV6272
 JV6272'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 JV6272'THE DISK HAS BEEN SHEARED OFF AND WAS NOT FOUND.  THE STEEL ROD IS CUT
 JV6272'FLUSH WITH THE TOP OF THE CONCRETE BASE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2717 ***********************************************************************
 JV2717  DESIGNATION -  CALVARY 2
 JV2717  PID         -  JV2717
 JV2717  STATE/COUNTY-  MD/MONTGOMERY
 JV2717  COUNTRY     -  US
 JV2717  USGS QUAD   -  KENSINGTON (2016)
 JV2717
 JV2717                         *CURRENT SURVEY CONTROL
 JV2717  ______________________________________________________________________
 JV2717* NAD 83(1991) POSITION- 39 00 41.67283(N) 077 02 27.95348(W)   ADJUSTED
 JV2717* NAVD 88 ORTHO HEIGHT -   109.81  (+/-2cm)      360.3   (feet) VERTCON3
 JV2717  ______________________________________________________________________
 JV2717  GEOID HEIGHT    -        -31.939 (meters)                     GEOID18
 JV2717  LAPLACE CORR    -         -2.88  (seconds)                    DEFLEC18
 JV2717  HORZ ORDER      -  SECOND
 JV2717  VERT ORDER      -  THIRD (See Below)
 JV2717
 JV2717.The horizontal coordinates were established by classical geodetic methods
 JV2717.and adjusted by the National Geodetic Survey in January 1992.
 JV2717
 JV2717.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2717.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2717
 JV2717.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2717.GEOID18 height accuracy estimate available here.
 JV2717
 JV2717.The vertical order pertains to the NGVD 29 superseded value.
 JV2717
 JV2717.Click photographs - Photos may exist for this station.
 JV2717
 JV2717.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2717
 JV2717. The following values were computed from the NAD 83(1991) position.
 JV2717
 JV2717;                    North         East     Units Scale Factor Converg.
 JV2717;SPC MD       -   149,292.041   396,440.561   MT  0.99995265   -0 01 32.9
 JV2717;SPC MD       -   489,802.30  1,300,655.41   sFT  0.99995265   -0 01 32.9
 JV2717;UTM  18      - 4,320,043.065   323,278.689   MT  0.99998457   -1 17 06.6
 JV2717
 JV2717!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2717!SPC MD       -   0.99998778  x   0.99995265  =   0.99994043
 JV2717!UTM  18      -   0.99998778  x   0.99998457  =   0.99997235
 JV2717
 JV2717:                Primary Azimuth Mark                     Grid Az
 JV2717:SPC MD       -  WHEATON RAD STA WMDO TOWER               339 44 21.4
 JV2717:UTM  18      -  WHEATON RAD STA WMDO TOWER               340 59 55.1
 JV2717
 JV2717_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2327820043(NAD 83)
 JV2717
 JV2717|---------------------------------------------------------------------|
 JV2717| PID    Reference Object                     Distance      Geod. Az  |
 JV2717|                                                           dddmmss.s |
 JV2717| JV3741 CALVARY                              84.616 METERS 02355     |
 JV2717| JV2718 CALVARY 2 RM 1                       23.763 METERS 17128     |
 JV2717| JV4282 WOODSIDE WSSD                       227.189 METERS 21146     |
 JV2717| JV2719 CALVARY 2 RM 2                       20.353 METERS 33233     |
 JV2717| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 3.4 KM 3394248.5 |
 JV2717| JV2716 CAL                                 448.373 METERS 3443051.8 |
 JV2717|---------------------------------------------------------------------|
 JV2717
 JV2717                          SUPERSEDED SURVEY CONTROL
 JV2717
 JV2717  NAD 83(1986)-  39 00 41.67201(N)    077 02 27.96416(W) AD(       ) 2
 JV2717  NAD 27      -  39 00 41.27773(N)    077 02 29.04356(W) AD(       ) 2
 JV2717  NGVD 29 (??/??/??)  110.02   (m)          361.0    (f) RESET       3  
 JV2717  NGVD 29             110.01   (m)          360.9    (f) LEVELING    3  
 JV2717
 JV2717.Superseded values are not recommended for survey control.
 JV2717
 JV2717.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2717.See file dsdata.pdf to determine how the superseded data were derived.
 JV2717
 JV2717_MARKER: DE = TRAVERSE STATION DISK
 JV2717_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2717_STAMPING: CALVARY 2 1960
 JV2717_MARK LOGO: CGS
 JV2717_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2717+STABILITY: SURFACE MOTION
 JV2717_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2717+SATELLITE: SATELLITE OBSERVATIONS - May 21, 2007
 JV2717
 JV2717  HISTORY     - Date     Condition        Report By
 JV2717  HISTORY     - 1960     MONUMENTED       CGS
 JV2717  HISTORY     - 1960     GOOD             CGS
 JV2717  HISTORY     - 1963     GOOD             MDDT
 JV2717  HISTORY     - 1988     GOOD             USPSQD
 JV2717  HISTORY     - 20070521 GOOD             MCDPW
 JV2717
 JV2717                          STATION DESCRIPTION
 JV2717
 JV2717'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (JLA)
 JV2717'STATION IS LOCATED DIRECTLY IN FRONT OF THE SOUTH WING OF THE
 JV2717'CALVARY LUTHERAN CHURCH IN THE NORTHEAST EDGE OF THE CITY OF SILVER
 JV2717'SPRINGS AND ABOUT 0.1 MILE SOUTH OF WHERE GEORGIA AVENUE INTERSECTS
 JV2717'THE WASHINGTON CIRCUMFERENTIAL HIGHWAY.  STATION IS 25.3 FEET
 JV2717'NORTHWEST OF THE SOUTHWEST CORNER OF THE CALVARY LUTHERAN CHURCH
 JV2717'(SOUTH WING), 19.4 FEET WEST OF THE NORTHWEST CORNER OF THE
 JV2717'BUILDING, 9.7 FEET EAST OF THE EAST EDGE OF THE SIDEWALK ALONG
 JV2717'THE STREET AND 6.8 FEET SOUTH OF THE SOUTH EDGE OF THE
 JV2717'SIDEWALK LEADING INTO THE CHURCH.  THE MARK IS SET 6 INCHES
 JV2717'BELOW THE SURFACE AND THE DISK IS STAMPED CALVARY 2 1960.
 JV2717'
 JV2717'REFERENCE MARK NO. 1 IS 42 FEET NORTH OF THE NORTH CURB OF A
 JV2717'SIDE STREET, 27.5 FEET NORTH OF A POWER LINE POLE AND 5.5 FEET
 JV2717'EAST OF THE EAST CURB TO GEORGIA AVENUE.  MARK PROJECTS ABOUT 2
 JV2717'INCHES AND THE DISK IS STAMPED CALVARY 2 NO 1 1960.
 JV2717'
 JV2717'REFERENCE MARK NO. 2 IS 68 FEET NORTHWEST OF THE NORTHWEST CORNER
 JV2717'OF THE SOUTH WING OF THE CHURCH, 5 FEET NORTHWEST OF A POWER LINE
 JV2717'POLE, SET IN CONCRETE IN A DRILL HOLE IN THE EAST CURB OF GEORGIA
 JV2717'AVENUE AND THE DISK IS STAMPED CALVARY 2 NO 2 1960.
 JV2717'
 JV2717'NO AZIMUTH MARK WAS SET, HOWEVER, ALL OF THE ABOVE OBJECTS ARE
 JV2717'VISIBLE FROM THE GROUND.
 JV2717
 JV2717                          STATION RECOVERY (1960)
 JV2717
 JV2717'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960
 JV2717'AT SILVER SPRINGS.
 JV2717'THE STATION IS LOCATED DIRECTLY IN FRONT OF THE SOUTH WING OF
 JV2717'THE CALVARY LUTHERAN CHURCH IN THE NORTHEAST EDGE OF THE CITY OF
 JV2717'SILVER SPRINGS AND ABOUT 0.1 MILE SOUTH OF WHERE GEORGIA AVENUE
 JV2717'INTERSECTS THE WASHINGTON CIRCUMFERENTIAL HIGHWAY.  STATION IS
 JV2717'25.3 FEET NORTHWEST OF THE SOUTHWEST CORNER OF THE CALVARY
 JV2717'LUTHERAN CHURCH (SOUTH WING), 19.4 FEET WEST OF THE NORTHWEST
 JV2717'CORNER OF THE BUILDING, 9.7 FEET EAST OF THE EAST EDGE OF THE
 JV2717'SIDEWALK ALONG THE STREET AND 6.8 FEET SOUTH OF THE SOUTH EDGE
 JV2717'OF THE SIDEWALK LEADING INTO THE CHURCH.  THE MARK IS SET 6
 JV2717'INCHES BELOW THE SURFACE.
 JV2717
 JV2717                          STATION RECOVERY (1963)
 JV2717
 JV2717'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 JV2717'STATION AND REFERENCE MARKS FOUND IN GOOD CONDITION AS DESCRIBED.
 JV2717
 JV2717                          STATION RECOVERY (1988)
 JV2717
 JV2717'RECOVERY NOTE BY US POWER SQUADRON 1988 (DTH)
 JV2717'RECOVERED IN GOOD CONDITION.
 JV2717
 JV2717                          STATION RECOVERY (2007)
 JV2717
 JV2717'RECOVERY NOTE BY MONTGOMERY COUNTY DEPT OF PUBL 2007 (EJG)
 JV2717'RECOVERED AS DESCRIBED AND IN GOOD CONDITION. MARK IS APPROX. 1' DEEP
 JV2717'FROM SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2718 ***********************************************************************
 JV2718  DESIGNATION -  CALVARY 2 RM 1
 JV2718  PID         -  JV2718
 JV2718  STATE/COUNTY-  MD/MONTGOMERY
 JV2718  COUNTRY     -  US
 JV2718  USGS QUAD   -  KENSINGTON (2016)
 JV2718
 JV2718                         *CURRENT SURVEY CONTROL
 JV2718  ______________________________________________________________________
 JV2718* NAD 83(1986) POSITION- 39 00 40.91   (N) 077 02 27.81   (W)   HD_HELD1
 JV2718* NAVD 88 ORTHO HEIGHT -   111.33  (+/-2cm)      365.3   (feet) VERTCON3
 JV2718  ______________________________________________________________________
 JV2718  GEOID HEIGHT    -        -31.939 (meters)                     GEOID18
 JV2718  VERT ORDER      -  THIRD (See Below)
 JV2718
 JV2718.The horizontal coordinates were determined by differentially corrected
 JV2718.hand held GPS observations or other comparable positioning techniques
 JV2718.and have an estimated accuracy of +/- 3 meters.
 JV2718
 JV2718.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2718.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2718
 JV2718.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2718.GEOID18 height accuracy estimate available here.
 JV2718
 JV2718.The vertical order pertains to the NGVD 29 superseded value.
 JV2718
 JV2718.Click photographs - Photos may exist for this station.
 JV2718
 JV2718;                    North         East    Units  Estimated Accuracy
 JV2718;SPC MD       -   149,268.5     396,444.0     MT  (+/- 3 meters HH1 GPS) 
 JV2718
 JV2718_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2328120019(NAD 83)
 JV2718
 JV2718                          SUPERSEDED SURVEY CONTROL
 JV2718
 JV2718  NGVD 29 (??/??/??)  111.54   (m)          365.9    (f) RESET       3  
 JV2718
 JV2718.Superseded values are not recommended for survey control.
 JV2718
 JV2718.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2718.See file dsdata.pdf to determine how the superseded data were derived.
 JV2718
 JV2718_MARKER: DR = REFERENCE MARK DISK
 JV2718_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2718_STAMPING: CALVARY 2 NO 1 1960
 JV2718_MARK LOGO: CGS
 JV2718_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2718+STABILITY: SURFACE MOTION
 JV2718
 JV2718  HISTORY     - Date     Condition        Report By
 JV2718  HISTORY     - 1960     MONUMENTED       CGS
 JV2718
 JV2718                          STATION DESCRIPTION
 JV2718
 JV2718'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV2718'AT SILVER SPRINGS.
 JV2718'THE STATION IS LOCATED DIRECTLY IN FRONT OF THE SOUTH WING OF THE
 JV2718'CALVARY LUTHERAN CHURCH IN THE NORTHEAST EDGE OF THE CITY OF
 JV2718'SILVER SPRINGS AND 0.1 MILE SOUTH OF WHERE GEORGIA AVENUE
 JV2718'INTERSECTS THE WASHINGTON CIRCUMFERENTIAL HIGHWAY.  STATION IS
 JV2718'42 FEET NORTH OF THE NORTH CURB OF A SIDE STREET, 27.5 FEET NORTH
 JV2718'OF A POWER LINE POLE AND 5.5 FEET EAST OF THE EAST CURB TO
 JV2718'GEORGIA AVENUE AND PROJECTS ABOUT 2 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2719 ***********************************************************************
 JV2719  DESIGNATION -  CALVARY 2 RM 2
 JV2719  PID         -  JV2719
 JV2719  STATE/COUNTY-  MD/MONTGOMERY
 JV2719  COUNTRY     -  US
 JV2719  USGS QUAD   -  KENSINGTON (2016)
 JV2719
 JV2719                         *CURRENT SURVEY CONTROL
 JV2719  ______________________________________________________________________
 JV2719* NAD 83(1986) POSITION- 39 00 42.26   (N) 077 02 28.34   (W)   HD_HELD1
 JV2719* NAVD 88 ORTHO HEIGHT -   109.93  (+/-2cm)      360.7   (feet) VERTCON3
 JV2719  ______________________________________________________________________
 JV2719  GEOID HEIGHT    -        -31.938 (meters)                     GEOID18
 JV2719  VERT ORDER      -  THIRD (See Below)
 JV2719
 JV2719.The horizontal coordinates were determined by differentially corrected
 JV2719.hand held GPS observations or other comparable positioning techniques
 JV2719.and have an estimated accuracy of +/- 3 meters.
 JV2719
 JV2719.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2719.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2719
 JV2719.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2719.GEOID18 height accuracy estimate available here.
 JV2719
 JV2719.The vertical order pertains to the NGVD 29 superseded value.
 JV2719
 JV2719.Click photographs - Photos may exist for this station.
 JV2719
 JV2719;                    North         East    Units  Estimated Accuracy
 JV2719;SPC MD       -   149,310.2     396,431.3     MT  (+/- 3 meters HH1 GPS) 
 JV2719
 JV2719_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2326920061(NAD 83)
 JV2719
 JV2719                          SUPERSEDED SURVEY CONTROL
 JV2719
 JV2719  NGVD 29 (??/??/??)  110.15   (m)          361.4    (f) RESET       3  
 JV2719
 JV2719.Superseded values are not recommended for survey control.
 JV2719
 JV2719.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2719.See file dsdata.pdf to determine how the superseded data were derived.
 JV2719
 JV2719_MARKER: DR = REFERENCE MARK DISK
 JV2719_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2719_SP_SET: CURB
 JV2719_STAMPING: CALVARY 2 NO 2 1960
 JV2719_MARK LOGO: CGS
 JV2719_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2719
 JV2719  HISTORY     - Date     Condition        Report By
 JV2719  HISTORY     - 1960     MONUMENTED       CGS
 JV2719  HISTORY     - 1988     GOOD             USPSQD
 JV2719
 JV2719                          STATION DESCRIPTION
 JV2719
 JV2719'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV2719'AT SILVER SPRINGS.
 JV2719'THE STATION IS LOCATED DIRECTLY IN FRONT OF THE SOUTH WING OF
 JV2719'THE CALVRY LUTHEAN CHURCH IN THE NORTHEAST EDGE OF THE CITY OF
 JV2719'SILVER SPRINGS AND 0.1 MILE SOUTH OF WHERE GEORGIA AVENUE
 JV2719'INTERSECTS THE WASHINGTON CIRCUMFERENTIAL HIGHWAY.  STATION IS
 JV2719'68 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE SOUTH WING OF
 JV2719'THE CHURCH, 5 FEET NORTHWEST OF A POWER LINE POLE AND SET IN A
 JV2719'DRILL HOLE IN THE EAST CURB OF GEORGIA AVENUE.
 JV2719
 JV2719                          STATION RECOVERY (1988)
 JV2719
 JV2719'RECOVERY NOTE BY US POWER SQUADRON 1988 (DTH)
 JV2719'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6551 ***********************************************************************
 HV6551  DESIGNATION -  CALVERT 4 1908
 HV6551  PID         -  HV6551
 HV6551  STATE/COUNTY-  MD/ST MARYS
 HV6551  COUNTRY     -  US
 HV6551  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6551
 HV6551                         *CURRENT SURVEY CONTROL
 HV6551  ______________________________________________________________________
 HV6551* NAD 83(1993) POSITION- 38 05 33.19524(N) 076 23 28.00058(W)   ADJUSTED
 HV6551* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6551  ______________________________________________________________________
 HV6551  GEOID HEIGHT    -        -35.030 (meters)                     GEOID18
 HV6551  LAPLACE CORR    -         -6.09  (seconds)                    DEFLEC18
 HV6551  HORZ ORDER      -  THIRD
 HV6551
 HV6551.The horizontal coordinates were established by classical geodetic methods
 HV6551.and adjusted by the National Geodetic Survey in November 1994.
 HV6551
 HV6551.The orthometric height was scaled from a topographic map.
 HV6551
 HV6551.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6551.GEOID18 height accuracy estimate available here.
 HV6551
 HV6551.Click photographs - Photos may exist for this station.
 HV6551
 HV6551.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6551
 HV6551. The following values were computed from the NAD 83(1993) position.
 HV6551
 HV6551;                    North         East     Units Scale Factor Converg.
 HV6551;SPC MD       -    47,454.007   453,414.788   MT  1.00004256   +0 22 55.8
 HV6551;SPC MD       -   155,688.69  1,487,578.35   sFT  1.00004256   +0 22 55.8
 HV6551;SPC VA N     - 2,049,397.350 3,684,977.741   MT  0.99999008   +1 18 58.3
 HV6551;SPC VA N     - 6,723,731.14 12,089,797.81   sFT  0.99999008   +1 18 58.3
 HV6551;SPC VA S     - 1,197,305.215 3,684,985.159   MT  1.00002540   +1 16 47.8
 HV6551;SPC VA S     - 3,928,158.86 12,089,822.14   sFT  1.00002540   +1 16 47.8
 HV6551;UTM  18      - 4,216,997.883   378,014.917   MT  0.99978327   -0 51 30.0
 HV6551
 HV6551!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6551!SPC MD       -   1.00000554  x   1.00004256  =   1.00004810
 HV6551!SPC VA N     -   1.00000554  x   0.99999008  =   0.99999562
 HV6551!SPC VA S     -   1.00000554  x   1.00002540  =   1.00003094
 HV6551!UTM  18      -   1.00000554  x   0.99978327  =   0.99978881
 HV6551
 HV6551:                Primary Azimuth Mark                     Grid Az
 HV6551:SPC MD       -  HALL                                     144 11 11.3
 HV6551:SPC VA N     -  HALL                                     143 15 08.8
 HV6551:SPC VA S     -  HALL                                     143 17 19.3
 HV6551:UTM  18      -  HALL                                     145 25 37.1
 HV6551
 HV6551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7801416997(NAD 83)
 HV6551
 HV6551|---------------------------------------------------------------------|
 HV6551| PID    Reference Object                     Distance      Geod. Az  |
 HV6551|                                                           dddmmss.s |
 HV6551| HV6529 HALL                                APPROX. 4.4 KM 1443407.1 |
 HV6551| HV6550 SIG MSFC 1908                       177.764 METERS 32414     |
 HV6551|---------------------------------------------------------------------|
 HV6551
 HV6551                          SUPERSEDED SURVEY CONTROL
 HV6551
 HV6551  NAD 83(1991)-  38 05 33.19409(N)    076 23 28.00334(W) AD(       ) 3
 HV6551  NAD 83(1986)-  38 05 33.19572(N)    076 23 28.01734(W) AD(       ) 3
 HV6551  NAD 27      -  38 05 32.75500(N)    076 23 29.21700(W) AD(       ) 3
 HV6551  USSD        -  38 05 33.13300(N)    076 23 28.93100(W) AD(       ) 3
 HV6551
 HV6551.Superseded values are not recommended for survey control.
 HV6551
 HV6551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6551.See file dsdata.pdf to determine how the superseded data were derived.
 HV6551
 HV6551_MARKER: N = NAIL
 HV6551_SETTING: 0 = UNSPECIFIED SETTING
 HV6551_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6551
 HV6551  HISTORY     - Date     Condition        Report By
 HV6551  HISTORY     - 1908     MONUMENTED       CGS
 HV6551  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6551  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6551
 HV6551                          STATION DESCRIPTION
 HV6551
 HV6551'DESCRIBED BY COAST AND GEODETIC SURVEY 1908 (OWF)
 HV6551'STATION IS ON A PROMINENT POINT OF LAND KNOWN AS GRAY POINT ON THE
 HV6551'E SIDE OF THE MOUTH OF SMITH CREEK, A LITTLE ABOVE THE WRECK BUOY,
 HV6551'ON AN AREA COVERED WITH A SECOND GROWTH OF PINE, AND 2 METERS
 HV6551'BACK FROM EDGE OF BANK.
 HV6551'
 HV6551'STATION WAS MARKED BY A NAIL DRIVEN INTO THE SIDE OF A 3-INCH
 HV6551'PINE STUMP.
 HV6551'
 HV6551'REFERENCE MARK IS A NAIL IN CEMENT IN THE CENTER OF A 4-INCH
 HV6551'VITRIFIED PIPE FILLED WITH AND SET IN CONCRETE 30.584 METERS
 HV6551'(100.34 FEET) FROM THE STATION N 39 DEG 18 MIN E.  THE
 HV6551'PIPE PROJECTS 3 INCHES ABOVE GROUND AND IS 20 INCHES LONG WITH
 HV6551'THE BOTTOM 3 INCHES ABOVE THE SUBSURFACE MARK, WHICH IS A
 HV6551'ROUNDISH BOULDER MARKED WITH A CROSS.
 HV6551'
 HV6551'A 6-INCH PINE, BLAZED 2 FEET ABOVE GROUND IS 12.975 METERS (42.57
 HV6551'FEET) FROM THE STATION N 01 DEG 41 MIN W.
 HV6551'
 HV6551'ANOTHER 6-INCH PINE, BLAZED 30 INCHES ABOVE THE GROUND IS 9.71
 HV6551'METERS (31.86 FEET) FROM THE STATION N 69 DEG 03 MIN E.
 HV6551
 HV6551                          STATION RECOVERY (1942)
 HV6551
 HV6551'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6551'A THOROUGH SEARCH WAS MADE WITHOUT ANY RESULTS.  THE LOCAL
 HV6551'REFERENCES COULD NOT BE FOUND, AND THERE ARE INDICATIONS THAT THE
 HV6551'BANK HAS CAVED VERY MUCH.  A LOCAL RESIDENT REPORTED THE BANK HAD
 HV6551'CAVED AT LEAST 50 FEET IN THE PAST 10 YEARS.  IT IS RECOMMENDED
 HV6551'THAT THIS STATION AND ITS REFERENCE MARK BE CLASSIFIED AS LOST.
 HV6551
 HV6551                          STATION RECOVERY (1958)
 HV6551
 HV6551'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6551'A THOROUGH SEARCH WAS MADE WITHOUT RESULTS.  THE LOCAL REFERENCES
 HV6551'COULD NOT BE FOUND AND THERE ARE INDICATIONS THAT THE BANK HAS
 HV6551'ERODED.  IT IS RECOMMENDED THAT THIS STATION AND ITS REFERENCE
 HV6551'MARK CONTINUE TO BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8283 ***********************************************************************
 HV8283  DESIGNATION -  CALVERT GPS E8
 HV8283  PID         -  HV8283
 HV8283  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8283  COUNTRY     -  US
 HV8283  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8283
 HV8283                         *CURRENT SURVEY CONTROL
 HV8283  ______________________________________________________________________
 HV8283* NAD 83(2011) POSITION- 38 58 40.36658(N) 076 55 43.93504(W)   ADJUSTED
 HV8283* NAD 83(2011) ELLIP HT-   -15.466 (meters)        (06/27/12)   ADJUSTED
 HV8283* NAD 83(2011) EPOCH   -  2010.00
 HV8283* NAVD 88 ORTHO HEIGHT -    16.67  (+/-2cm)       54.7   (feet) VERTCON3
 HV8283  ______________________________________________________________________
 HV8283  GEOID HEIGHT    -        -32.159 (meters)                     GEOID18
 HV8283  NAD 83(2011) X  -  1,122,855.307 (meters)                     COMP
 HV8283  NAD 83(2011) Y  - -4,836,221.092 (meters)                     COMP
 HV8283  NAD 83(2011) Z  -  3,990,398.557 (meters)                     COMP
 HV8283  LAPLACE CORR    -         -4.89  (seconds)                    DEFLEC18
 HV8283  VERT ORDER      -  THIRD ? (See Below)
 HV8283
 HV8283  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8283  Standards:
 HV8283         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8283            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8283  -------------------------------------------------------------------
 HV8283  NETWORK    2.04   3.63           0.90   0.75   1.85     -0.17317117
 HV8283  -------------------------------------------------------------------
 HV8283  Click here for local accuracies and other accuracy information.
 HV8283
 HV8283.The horizontal coordinates were established by GPS observations
 HV8283.and adjusted by the National Geodetic Survey in June 2012.
 HV8283
 HV8283.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8283.been affixed to the stable North American tectonic plate. See 
 HV8283.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8283
 HV8283.The horizontal coordinates are valid at the epoch date displayed above
 HV8283.which is a decimal equivalence of Year/Month/Day.
 HV8283
 HV8283.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8283.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8283
 HV8283.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8283.GEOID18 height accuracy estimate available here.
 HV8283
 HV8283.The vertical order pertains to the NGVD 29 superseded value.
 HV8283
 HV8283.Click photographs - Photos may exist for this station.
 HV8283
 HV8283.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8283
 HV8283.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8283
 HV8283.The ellipsoidal height was determined by GPS observations
 HV8283.and is referenced to NAD 83.
 HV8283
 HV8283. The following values were computed from the NAD 83(2011) position.
 HV8283
 HV8283;                    North         East     Units Scale Factor Converg.
 HV8283;SPC MD       -   145,553.026   406,163.281   MT  0.99995143   +0 02 40.7
 HV8283;SPC MD       -   477,535.22  1,332,554.03   sFT  0.99995143   +0 02 40.7
 HV8283;UTM  18      - 4,316,091.315   332,917.039   MT  0.99994376   -1 12 48.9
 HV8283
 HV8283!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8283!SPC MD       -   1.00000243  x   0.99995143  =   0.99995386
 HV8283!UTM  18      -   1.00000243  x   0.99994376  =   0.99994619
 HV8283
 HV8283_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3291716091(NAD 83)
 HV8283
 HV8283                          SUPERSEDED SURVEY CONTROL
 HV8283
 HV8283  NAD 83(2007)-  38 58 40.36719(N)    076 55 43.93586(W) AD(2002.00) 0
 HV8283  ELLIP H (02/10/07)  -15.454  (m)                       GP(2002.00)    
 HV8283  ELLIP H (09/18/02)  -15.454  (m)                       GP(       ) 4 2
 HV8283  ELLIP H (11/14/94)  -15.462  (m)                       GP(       ) 4 2
 HV8283  NAD 83(1991)-  38 58 40.36713(N)    076 55 43.93544(W) AD(       ) 1
 HV8283  NAD 83(1986)-  38 58 40.36585(N)    076 55 43.94618(W) AD(       ) 1
 HV8283  NGVD 29              16.90   (m)           55.4    (f) LEVELING    3  
 HV8283
 HV8283.Superseded values are not recommended for survey control.
 HV8283
 HV8283.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8283.See file dsdata.pdf to determine how the superseded data were derived.
 HV8283
 HV8283_MARKER: DA = ASTRO MARKER (USUALLY A DISK)
 HV8283_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 HV8283+WITH SETTING: INFORMATION.
 HV8283_STAMPING: CALVERT GPS E8
 HV8283_MARK LOGO: DEWDAV
 HV8283_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 HV8283_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8283_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8283+SATELLITE: SATELLITE OBSERVATIONS - January 29, 2004
 HV8283
 HV8283  HISTORY     - Date     Condition        Report By
 HV8283  HISTORY     - 1988     MONUMENTED       DEWDAV
 HV8283  HISTORY     - 19991006 GOOD             GEOMET
 HV8283  HISTORY     - 19991105 GOOD             GEOMET
 HV8283  HISTORY     - 20020513 GOOD             DEWDAV
 HV8283  HISTORY     - 20040129 GOOD             GEOMET
 HV8283
 HV8283                          STATION DESCRIPTION
 HV8283
 HV8283'DESCRIBED BY DEWBERRY DAVIS 1988
 HV8283'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MD, IN THE CITY OF
 HV8283'COLLEGE PARK, 0.5 MILE ESE OF THE UNIVERSITY OF MARYLAND.
 HV8283'TO REACH THE STATION FROM THE INTERSECTION OF EAST-WEST HIGHWAY AND
 HV8283'U.S. ROUTE 1, GO NORTH ON U.S. 1, FOR 0.9 MILE TO CALVERT STREET ON
 HV8283'THE RIGHT, TURN RIGHT ON CALVERT AND GO EAST 0.5 MILE TO THE RAILROAD
 HV8283'TRACKS AND THE COLLEGE PARK POST OFFICE ON THE RIGHT.  THE STATION IS
 HV8283'OPPOSITE THE POST OFFICE IN A GRASS STRIP BETWEEN THE RAILROAD TRACKS
 HV8283'AND BOWDOIN AVENUE.
 HV8283'THE STATION MARK IS A 2.5 INCH ALUMINUM DISK STAMPED ---CALVERT
 HV8283'GPS-E8---,ATTATCHED TO A BERNTSEN 3-D MONUMENT, ENCASED IN A 5 INCH
 HV8283'ROUND ALUMINUM MONUMENT BOX SET FLUSH WITH THE GROUND.  THE MARK IS 72
 HV8283'FEET SOUTH OF THE SOUTH EDGE OF PAVEMENT OF CALVERT ROAD,  17 FEET
 HV8283'WEST OF THE WEST MOST RAIL, AND 6 FEET SOUTH OF A 6 INCH SQUARE 4 FOOT
 HV8283'HIGH CONCRETE POST.
 HV8283'REFERENCE MARK 1 IS A SCRIBE MARK IN THE WEST MOST RAIL.  THE MARK IS
 HV8283'16.66 FEET WNW OF RM 1.
 HV8283'REFERENCE MARK 2 IS IS A PK NAIL IN THE CURB ON THE EAST SIDE OF
 HV8283'BOWDOIN AVENUE.  THE MARK IS 17.11 FEET EAST OF RM 2.
 HV8283'REFERENCE MARK 3 IS A PK NAIL IN THE SW CORNER OF A CONCRETE PAD IN
 HV8283'FRONT OF A BUS SHELTER.  THE MARK IS 20.30 FEET SOUTH OF RM 3.
 HV8283
 HV8283                          STATION RECOVERY (1999)
 HV8283
 HV8283'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BL)
 HV8283'GOOD CONDITION.
 HV8283
 HV8283                          STATION RECOVERY (1999)
 HV8283
 HV8283'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BAB)
 HV8283'GOOD.
 HV8283
 HV8283                          STATION RECOVERY (2002)
 HV8283
 HV8283'RECOVERY NOTE BY DEWBERRY DAVIS 2002 (KEC)
 HV8283'RECOVERED IN GOOD CONDITION.
 HV8283
 HV8283                          STATION RECOVERY (2004)
 HV8283
 HV8283'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2004 (KRO)
 HV8283'OBSTRUCTED FROM SOUTH TO NORTH IN THE WEST BY TREES. GPSABLE WHILE THE
 HV8283'LEAVES ARE DOWN BUT MAY BE DIFFICULT DURING THE SUMMER TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6609 ***********************************************************************
 HV6609  DESIGNATION -  CALVERT MONUMENT 1908
 HV6609  PID         -  HV6609
 HV6609  STATE/COUNTY-  MD/ST MARYS
 HV6609  COUNTRY     -  US
 HV6609  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6609
 HV6609                         *CURRENT SURVEY CONTROL
 HV6609  ______________________________________________________________________
 HV6609* NAD 83(1993) POSITION- 38 11 15.25487(N) 076 26 08.95091(W)   ADJUSTED
 HV6609* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV6609  ______________________________________________________________________
 HV6609  GEOID HEIGHT    -        -34.741 (meters)                     GEOID18
 HV6609  LAPLACE CORR    -         -5.97  (seconds)                    DEFLEC18
 HV6609  HORZ ORDER      -  THIRD
 HV6609
 HV6609.The horizontal coordinates were established by classical geodetic methods
 HV6609.and adjusted by the National Geodetic Survey in November 1994.
 HV6609
 HV6609.The orthometric height was scaled from a topographic map.
 HV6609
 HV6609.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6609.GEOID18 height accuracy estimate available here.
 HV6609
 HV6609.Click photographs - Photos may exist for this station.
 HV6609
 HV6609.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6609
 HV6609. The following values were computed from the NAD 83(1993) position.
 HV6609
 HV6609;                    North         East     Units Scale Factor Converg.
 HV6609;SPC MD       -    57,975.697   449,427.609   MT  1.00002146   +0 21 14.8
 HV6609;SPC MD       -   190,208.60  1,474,497.08   sFT  1.00002146   +0 21 14.8
 HV6609;UTM  18      - 4,227,600.896   374,257.496   MT  0.99979473   -0 53 16.1
 HV6609
 HV6609!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6609!SPC MD       -   1.00000456  x   1.00002146  =   1.00002602
 HV6609!UTM  18      -   1.00000456  x   0.99979473  =   0.99979928
 HV6609
 HV6609_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7425727600(NAD 83)
 HV6609
 HV6609                          SUPERSEDED SURVEY CONTROL
 HV6609
 HV6609  NAD 83(1991)-  38 11 15.25402(N)    076 26 08.95401(W) AD(       ) 3
 HV6609  NAD 83(1986)-  38 11 15.25456(N)    076 26 08.96751(W) AD(       ) 3
 HV6609  NAD 27      -  38 11 14.87800(N)    076 26 10.18600(W) AD(       ) 3
 HV6609  USSD        -  38 11 15.26100(N)    076 26 09.89100(W) AD(       ) 3
 HV6609
 HV6609.Superseded values are not recommended for survey control.
 HV6609
 HV6609.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6609.See file dsdata.pdf to determine how the superseded data were derived.
 HV6609
 HV6609_MARKER: V = STONE MONUMENT
 HV6609_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6609_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6609+SATELLITE: SATELLITE OBSERVATIONS - April 16, 2005
 HV6609
 HV6609  HISTORY     - Date     Condition        Report By
 HV6609  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6609  HISTORY     - 1942     GOOD             CGS
 HV6609  HISTORY     - 1956     GOOD             CGS
 HV6609  HISTORY     - 1958     GOOD             CGS
 HV6609  HISTORY     - 19990214 GOOD             USPSQD
 HV6609  HISTORY     - 20050416 GOOD             USPSQD
 HV6609
 HV6609                          STATION DESCRIPTION
 HV6609
 HV6609'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6609'STATION IS ON THE EASTERN SHORES OF ST. MARYS RIVER, ON A HIGH
 HV6609'PROMINENT POINT NEAR SITE OF OLD ST. MARYS.  STATION IS APEX OF
 HV6609'TALL GRANITE SHAFT KNOWN AS THE CALVERT MONUMENT, ERECTED IN MEMORY
 HV6609'OF THE CALVERT WHO FOUNDED THE FIRST SETTLEMENT OF MARYLAND NEAR
 HV6609'THIS POINT.
 HV6609
 HV6609                          STATION RECOVERY (1942)
 HV6609
 HV6609'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6609'THE STATION IS LOCATED AT ST. MARYS CITY ABOUT 275 FEET SW OF THE
 HV6609'EPISCOPAL CHURCH AND IN THE W SIDE OF THE CEMETERY.
 HV6609'
 HV6609'THE STATION IS THE APEX OF THE TALL GRANITE SHAFT KNOWN AS THE
 HV6609'CALVERT MONUMENT, ERECTED IN MEMORY OF THE CALVERT WHO FOUNDED THE
 HV6609'FIRST SETTLEMENT OF MARYLAND NEAR THIS POINT.  THE STATION IS IN
 HV6609'GOOD CONDITION.
 HV6609
 HV6609                          STATION RECOVERY (1956)
 HV6609
 HV6609'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (LWS)
 HV6609'STATION RECOVERED AS DESCRIBED BY W.D.P. IN 1942, EXCEPT IT IS
 HV6609'275 FT. W (NOT SW) OF THE EPISCOPAL CHURCH.
 HV6609
 HV6609                          STATION RECOVERY (1958)
 HV6609
 HV6609'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6609'THE STATION WAS RECOVERED AS DESCRIBED.  THE 1956 RECOVEREY NOTE BY
 HV6609'L.W.S. IS ADEQUATE AND COMPLETE.
 HV6609
 HV6609                          STATION RECOVERY (1999)
 HV6609
 HV6609'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV6609'RECOVERED IN GOOD CONDITION.
 HV6609
 HV6609                          STATION RECOVERY (2005)
 HV6609
 HV6609'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPF)
 HV6609'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6725 ***********************************************************************
 HV6725  DESIGNATION -  CALVERT RESET
 HV6725  PID         -  HV6725
 HV6725  STATE/COUNTY-  MD/CALVERT
 HV6725  COUNTRY     -  US
 HV6725  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6725
 HV6725                         *CURRENT SURVEY CONTROL
 HV6725  ______________________________________________________________________
 HV6725* NAD 83(1991) POSITION- 38 21 34.37191(N) 076 23 33.97038(W)   ADJUSTED
 HV6725* NAVD 88 ORTHO HEIGHT -    38.    (meters)      125.    (feet) SCALED
 HV6725  ______________________________________________________________________
 HV6725  GEOID HEIGHT    -        -34.500 (meters)                     GEOID18
 HV6725  LAPLACE CORR    -         -5.15  (seconds)                    DEFLEC18
 HV6725  HORZ ORDER      -  FIRST
 HV6725
 HV6725.The horizontal coordinates were established by classical geodetic methods
 HV6725.and adjusted by the National Geodetic Survey in January 1992.
 HV6725
 HV6725.The orthometric height was scaled from a topographic map.
 HV6725
 HV6725.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6725.GEOID18 height accuracy estimate available here.
 HV6725
 HV6725.Click photographs - Photos may exist for this station.
 HV6725
 HV6725.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6725
 HV6725. The following values were computed from the NAD 83(1991) position.
 HV6725
 HV6725;                    North         East     Units Scale Factor Converg.
 HV6725;SPC MD       -    77,089.297   453,072.181   MT  0.99999017   +0 22 52.0
 HV6725;SPC MD       -   252,917.14  1,486,454.31   sFT  0.99999017   +0 22 52.0
 HV6725;UTM  18      - 4,246,626.764   378,315.207   MT  0.99978235   -0 51 52.0
 HV6725
 HV6725!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6725!SPC MD       -   0.99999949  x   0.99999017  =   0.99998966
 HV6725!UTM  18      -   0.99999949  x   0.99978235  =   0.99978184
 HV6725
 HV6725:                Primary Azimuth Mark                     Grid Az
 HV6725:SPC MD       -  CEDAR POINT 2                            167 28 57.0
 HV6725:UTM  18      -  CEDAR POINT 2                            168 43 41.0
 HV6725
 HV6725_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7831546626(NAD 83)
 HV6725
 HV6725|---------------------------------------------------------------------|
 HV6725| PID    Reference Object                     Distance      Geod. Az  |
 HV6725|                                                           dddmmss.s |
 HV6725| CX2167 CALVERT RM 2 STONE POST               7.525 METERS 09323     |
 HV6725| CX2164 CALVERT RM 1 STONE POST               6.025 METERS 09323     |
 HV6725| CX2163 CALVERT RM 1                          9.215 METERS 12115     |
 HV6725| HV6675 CEDAR POINT 2                       APPROX. 7.1 KM 1675149.0 |
 HV6725| HV6671 JARBOESVILLE CEDAR PT FARM TK       APPROX. 6.2 KM 1760228.8 |
 HV6725| CX2166 CALVERT RM 2 RESET                                 2230544.8 |
 HV6725| CX2165 CALVERT RM 2 AZIMUTH                               3113357.1 |
 HV6725|---------------------------------------------------------------------|
 HV6725
 HV6725                          SUPERSEDED SURVEY CONTROL
 HV6725
 HV6725  NAD 83(1986)-  38 21 34.37118(N)    076 23 33.98607(W) AD(       ) 1
 HV6725  NAD 27      -  38 21 33.93100(N)    076 23 35.16300(W) AD(       ) 1
 HV6725  USBS        -  38 21 30.68000(N)    076 23 16.16000(W) AD(       ) 3
 HV6725  USSD        -  38 21 34.29000(N)    076 23 34.92200(W) AD(       ) 3
 HV6725
 HV6725.Superseded values are not recommended for survey control.
 HV6725
 HV6725.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6725.See file dsdata.pdf to determine how the superseded data were derived.
 HV6725
 HV6725_MARKER: DS = TRIANGULATION STATION DISK
 HV6725_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6725_STAMPING: CALVERT 1854
 HV6725_MARK LOGO: CGS
 HV6725_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6725
 HV6725  HISTORY     - Date     Condition        Report By
 HV6725  HISTORY     - 1854     MONUMENTED       COASUR
 HV6725  HISTORY     - 1907     SEE DESCRIPTION  CGS
 HV6725  HISTORY     - 1932     GOOD             CGS
 HV6725  HISTORY     - 1934     GOOD             CGS
 HV6725  HISTORY     - 1942     GOOD             CGS
 HV6725
 HV6725                          STATION DESCRIPTION
 HV6725
 HV6725'DESCRIBED BY COAST AND GEODETIC SURVEY 1907
 HV6725'STATION IS ON THE WESTERN SIDE OF CHESAPEAKE BAY, ABOUT 2 MILES S
 HV6725'OF COVE POINT, ABOUT 1/4 MILE BACK FROM THE BAY SHORE, ON PROPERTY
 HV6725'OWNED (IN 1897) BY DOCTOR IRELAND.  IT IS W OF THE GARDEN WHICH
 HV6725'IS S OF DOCTOR IRELANDS HOUSE, BEING NEAR AND TO THE N OF THE
 HV6725'FENCE WHICH EXTENDS ALONG AND BEYOND THE S SIDE OF THE GARDEN.
 HV6725'THE STATION CENTER IS MARKED BY A CONE OF GRAY SANDSTONE, ABOUT 4
 HV6725'INCHES ACROSS THE TOP.  IN 1897 THIS CONE WAS ONLY 11 INCHES
 HV6725'BELOW THE SURFACE OF THE GROUND.  TWO REFERENCE MARKS, GRANITE
 HV6725'PILLARS, WERE PLACED NEAR THE SW CORNER OF THE GARDEN AND CLOSE
 HV6725'TO THE FENCE LINE WHERE THEY WOULD NOT BE INTERFERED WITH BY
 HV6725'THE CULTIVATION OF THE FIELD.  THESE STONES ARE IN RANGE
 HV6725'WITH THE STATION, THE WESTERN STONE (CENTER) BEING 19 FEET 8
 HV6725'INCHES THEREFROM, AND THE STONES (CENTERS) BEING 4 FEET
 HV6725'11-1/2 INCHES APART.  A PERSIMMON TREE STANDS TO THE NE OF
 HV6725'THE STATION AT A DISTANCE OF 73.5 FEET.
 HV6725
 HV6725                          STATION RECOVERY (1932)
 HV6725
 HV6725'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HV6725'ORIGINAL DESCRIPTION IS ADEQUATE.  CENTER MARK WAS WELL PRESERVED
 HV6725'AND APPARENTLY UNDISTURBED.  A SURFACE MARK WAS SET ABOVE THE
 HV6725'SANDSTONE CONE.  IT IS A STANDARD BRONZE DISK, AS DESCRIBED IN
 HV6725'NOTE 1B, SET IN CONCRETE AND STAMPED CALVERT, 1854.
 HV6725'
 HV6725'A NEW REFERENCE MARK, A STANDARD BRONZE DISK SET IN CONCRETE, AS
 HV6725'DESCRIBED IN NOTE 11A, WAS ESTABLISHED, 9.214 METERS, (30.23 FEET),
 HV6725'S 58 DEG 52 MIN E FROM STATION AND STAMPED CALVERT,
 HV6725'1854.  CENTER TO GRANITE MONUMENT R.M.NO.1 IS 6.026 METERS (19.77
 HV6725'FEET) AND TO GRANITE MONUMENT R.M.NO.2 IS 7.529 METERS (24.70
 HV6725'FEET).  BOTH OF THESE MONUMENTS HAD APPARENTLY BEEN SLIGHTLY
 HV6725'DISTURBED BY CULTIVATION OF THE FIELD.
 HV6725
 HV6725                          STATION RECOVERY (1934)
 HV6725
 HV6725'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6725'STATION IS ON THE PROPERTY OF MR. JOHN MARSHALL OF NEW YORK AND
 HV6725'OCCUPIED BY TENANT, JAMES KENT.  STATION IS LOCATED W OF
 HV6725'THE GARDEN WHICH IS S OF THE HOUSE BEING NEAR AND N OF THE FENCE
 HV6725'WHICH EXTENDS ALONG AND BEYOND THE S SIDE OF THE GARDEN.  STATION
 HV6725'IS A STANDARD DISK SET IN CONCRETE AND ABOUT 14 INCHES BELOW THE
 HV6725'SURFACE OF THE GROUND.  THE TWO REFERENCE STONES WERE RECOVERED
 HV6725'AS DESCRIBED AND HAVE APPARENTLY BEEN MOVED DUE TO THE GROUND
 HV6725'HAVING BEEN CULTIVATED AT SOME TIME.  THESE STONES WERE PLACED
 HV6725'IN 1897 AND ARE IN RANGE TO THE E FROM THE STATION.  THE
 HV6725'PERSIMMON TREE STILL EXISTS AND IS 73.5 FEET N OF STATION.  A
 HV6725'STANDARD REFERENCE MARK HAD BEEN ESTABLISHED AND IS 9.210
 HV6725'METERS ESE OF THE STATION AND IS STAMPED CALVERT, BUT THE
 HV6725'DATE WAS SO MULTILATED THAT IT COULD NOT BE READ.  THIS MARK WAS
 HV6725'MARKED NO.1 AT THIS OCCUPATION OF THE STATION.  THE
 HV6725'REFERENCE STONES ARE 6-INCH GRANITE POSTS EMBEDDED IN THE
 HV6725'GROUND AND HAVE A CHISELED CROSS ON THE TOP OF THEM.
 HV6725'
 HV6725'AN ADDITIONAL REFERENCE MARK WAS ESTABLISHED AND MARKED CALVERT
 HV6725'NO.2 1934 (AZIMUTH MARK).  IT IS 0.2 MILE, NW OF THE STATION, 10
 HV6725'FEET E OF THE RAIL FENCE ON THE W SIDE OF THE FIELD ON WHICH THE
 HV6725'STATION IS LOCATED, 25 YARDS S OF THE GATE ENTRANCE TO THE FIELD,
 HV6725'18 FEET S OF A 4-INCH SASSAFRAS TREE.  MARK IS VISIBLE FROM THE
 HV6725'GROUND AT THE STATION.
 HV6725'
 HV6725'TO REACH THE STATION FROM PRINCE FREDERICK, MARYLAND, GO S ON
 HV6725'HIGHWAY 2 FOR 15.2 MILES TO THE ROAD SIGN MARKED BERTHA COVE POINT
 HV6725'2 1/2, 14 PRINCE FREDERICK, 53 ANNAPOLIS, 55 WASHINGTON.  TURN
 HV6725'LEFT HERE AND FOLLOW HARD-SURFACE ROAD FOR 1.1 MILES AND TURN
 HV6725'RIGHT INTO DIRT ROAD AND FOLLOW THIS ROAD FOR 2.6 MILES.  AT THIS
 HV6725'POINT TURN LEFT AND FOLLOW THIS ROAD 0.55 MILE TO A BROKEN
 HV6725'WALNUT TREE AND TURN RIGHT THROUGH A PRIVATE GATE INTO FARM LANE
 HV6725'AND FOLLOW IT 0.35 MILE TO BARN, THEN TURN RIGHT AND FOLLOW
 HV6725'FENCE LINE FOR 600 FEET TO THE STATION SITE.
 HV6725'
 HV6725'THE DIRECTION TO THE NEAR REFERENCE MARKS WAS TAKEN FROM AN
 HV6725'EXTENDED LINE.
 HV6725'
 HV6725'A 103-FOOT TOWER WILL CLEAR ALL LINES AT THIS STATION.
 HV6725'
 HV6725'THERE ARE NO PROMINENT OBJECTS VISIBLE FROM THE GROUND AT THIS
 HV6725'STATION.
 HV6725
 HV6725                          STATION RECOVERY (1942)
 HV6725
 HV6725'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6725'STATION AND REFERENCE MARKS NOS. 1 AND 2 WERE RECOVERED AND FOUND
 HV6725'IN GOOD CONDITION.  REFERENCE MARK NO.2 1934 (AZIMUTH MARK) WAS
 HV6725'FOUND NOW SURROUNDED BY 20-FOOT PINE TREES AND NOT VISIBLE FROM
 HV6725'THE STATION AND SO WAS MOVED TO A NEW LOCATION.  THE 2 REFERENCE
 HV6725'STONES SET IN 1897 AND IN RANGE TO THE E FROM THE STATION WERE
 HV6725'RECOVERED BUT APPARENTLY HAVE BEEN DISTURBED BY PLOWING IN THE
 HV6725'FIELD.  A COMPLETE NEW DESCRIPTION FOLLOWS--
 HV6725'
 HV6725'THE STATION MARK, A STANDARD DISK SET IN CONCRETE AT THE CENTER
 HV6725'OF THE TOP OF A TILE WHICH IS EMBEDDED IN THE GROUND, IS LOCATED
 HV6725'ABOUT 17 MILES BY ROAD SE OF PRINCE FREDERICK, ABOUT 2 MILES S OF
 HV6725'COVE POINT, 0.25 MILE W OF THE CHESAPEAKE BAY SHORE AND ON
 HV6725'PROPERTY OWNED BY JOHN MARSHALL OF NEW YORK AND OCCUPIED BY
 HV6725'A TENANT, JAMES KENT.  IT IS NEAR THE SE CORNER OF A
 HV6725'CULTIVATED FIELD ALONG THE W SIDE OF A GARDEN S OF THE HOUSE, 17
 HV6725'FEET N OF A RAIL FENCE AND 36 FEET WNW OF THE MOST WESTERLY OF
 HV6725'THREE CHERRY TREES IN THE FENCE LINE.  IT IS STAMPED CALVERT
 HV6725'1854 AND IS 14 INCHES BELOW THE SURFACE OF THE GROUND.  THE
 HV6725'SUB-SURFACE MARK IS A CONE OF GRAY SANDSTONE ABOUT 4 INCHES
 HV6725'ACROSS THE TOP.
 HV6725'
 HV6725'REFERENCE MARK NO.1, A STANDARD DISK SET IN CONCRETE, AS DESCRIBED
 HV6725'IN NOTE 11A, IS ESE OF THE STATION, 1 FOOT N OF A RAIL FENCE AND
 HV6725'7 FEET W BY N OF THE MOST WESTERLY OF 3 CHERRY TREES IN THE FENCE
 HV6725'LINE.  IT IS STAMPED CALVERT NO.1 (SOME DATE HAS BEEN STAMPED ON
 HV6725'IT BUT IS SO MUTILATED IT CANNOT BE READ) AND PROJECTS ABOUT 4
 HV6725'INCHES.
 HV6725'
 HV6725'REFERENCE MARK NO.2 (AZIMUTH MARK) A STANDARD DISK SET IN
 HV6725'CONCRETE, AS DESCRIBED IN NOTE 11A, MOVED TO A NEW LOCATION BY
 HV6725'THIS PARTY, IS NOW ABOUT 0.15 MILE N OF THE STATION.  IT IS AT THE
 HV6725'N EDGE OF THE FIELD IN WHICH THE STATION IS LOCATED, AT THE S
 HV6725'EDGE OF A WOODS, 9 FEET N OF THE CENTER OF A FIELD ROAD, 90 FEET
 HV6725'E OF A POLE GATE.  MARK IS STAMPED CALVERT NO.2 1934 AND
 HV6725'PROJECTS 4 INCHES.
 HV6725'
 HV6725'REFERENCE POSTS NOS. 1 AND 2 ARE ON RANGE E OF THE STATION.  THEY
 HV6725'ARE 6-INCH SQUARE GRANITE POSTS, PROJECTING 6 INCHES AND EACH HAS
 HV6725'A CROSS CHISELED IN ITS TOP.  THEY HAVE BEEN DISTURBED.
 HV6725'
 HV6725'TO REACH THE STATION FROM THE COURTHOUSE IN PRINCE FREDERICK, GO
 HV6725'S ON STATE HIGHWAY 2 FOR 14.2 MILES TO BERTHA (A LARGE CHURCH ON
 HV6725'THE LEFT) TURN LEFT ON A PAVED ROAD AND GO 1.0 MILE TO A GRAVEL
 HV6725'ROAD RIGHT.  TURN RIGHT ON THE GRAVEL ROAD AND GO 1.6 MILES, THEN
 HV6725'TURN LEFT ON A DIRT ROAD AND GO 0.6 MILE.  TURN RIGHT AT THE
 HV6725'BOTTOM OF A HILL AND A LARGE WALNUT TREE AND GO 0.25 MILE TO A
 HV6725'POLE GATE.  PASS THROUGH THE GATE, TURN LEFT AND FOLLOW ALONG N
 HV6725'EDGE OF FIELD FOR 0.1 MILE TO FENCE, TURN RIGHT AND GO 0.1
 HV6725'MILE TO SE CORNER OF THE FIELD AND STATION.
 HV6725'
 HV6725'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION REKAR.
 HV6725'
 HV6725'A 90-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT STATION CEDAR
 HV6725'POINT 2.
 HV6725'
 HV6725'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION CHASE.
 HV6725'
 HV6725'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION SPALDING.
 HV6725'
 HV6725'A 103-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT STATION BARREDA.
 HV6725'
 HV6725'A 103-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT STATION WILSON 2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7981 ***********************************************************************
 AJ7981  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7981  DESIGNATION -  CALVERTON
 AJ7981  PID         -  AJ7981
 AJ7981  STATE/COUNTY-  MD/PRINCE GEORGES
 AJ7981  COUNTRY     -  US
 AJ7981  USGS QUAD   -  BELTSVILLE (2016)
 AJ7981
 AJ7981                         *CURRENT SURVEY CONTROL
 AJ7981  ______________________________________________________________________
 AJ7981* NAD 83(2011) POSITION- 39 02 59.49645(N) 076 55 59.37895(W)   ADJUSTED
 AJ7981* NAD 83(2011) ELLIP HT-    27.832 (meters)        (06/27/12)   ADJUSTED
 AJ7981* NAD 83(2011) EPOCH   -  2010.00
 AJ7981* NAVD 88 ORTHO HEIGHT -    59.916 (meters)      196.57  (feet) ADJUSTED
 AJ7981  ______________________________________________________________________
 AJ7981  GEOID HEIGHT    -        -32.098 (meters)                     GEOID18
 AJ7981  NAD 83(2011) X  -  1,121,363.494 (meters)                     COMP
 AJ7981  NAD 83(2011) Y  - -4,831,437.786 (meters)                     COMP
 AJ7981  NAD 83(2011) Z  -  3,996,634.753 (meters)                     COMP
 AJ7981  LAPLACE CORR    -         -3.73  (seconds)                    DEFLEC18
 AJ7981  DYNAMIC HEIGHT  -         59.885 (meters)      196.47  (feet) COMP
 AJ7981  MODELED GRAVITY -    980,098.0   (mgal)                       NAVD 88
 AJ7981
 AJ7981  VERT ORDER      -  SECOND    CLASS I
 AJ7981
 AJ7981  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7981  Standards:
 AJ7981         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7981            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7981  -------------------------------------------------------------------
 AJ7981  NETWORK    0.45   0.53           0.20   0.16   0.27      0.00817384
 AJ7981  -------------------------------------------------------------------
 AJ7981  Click here for local accuracies and other accuracy information.
 AJ7981
 AJ7981.The horizontal coordinates were established by GPS observations
 AJ7981.and adjusted by the National Geodetic Survey in June 2012.
 AJ7981
 AJ7981.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7981.been affixed to the stable North American tectonic plate. See 
 AJ7981.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7981
 AJ7981.The horizontal coordinates are valid at the epoch date displayed above
 AJ7981.which is a decimal equivalence of Year/Month/Day.
 AJ7981
 AJ7981.The orthometric height was determined by differential leveling and
 AJ7981.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7981.in November 2003.
 AJ7981
 AJ7981.No vertical observational check was made to the station.
 AJ7981
 AJ7981.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7981.GEOID18 height accuracy estimate available here.
 AJ7981
 AJ7981.Click photographs - Photos may exist for this station.
 AJ7981
 AJ7981.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7981
 AJ7981.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7981
 AJ7981.The ellipsoidal height was determined by GPS observations
 AJ7981.and is referenced to NAD 83.
 AJ7981
 AJ7981.The dynamic height is computed by dividing the NAVD 88
 AJ7981.geopotential number by the normal gravity value computed on the
 AJ7981.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7981.degrees latitude (g = 980.6199 gals.).
 AJ7981
 AJ7981.The modeled gravity was interpolated from observed gravity values.
 AJ7981
 AJ7981. The following values were computed from the NAD 83(2011) position.
 AJ7981
 AJ7981;                    North         East     Units Scale Factor Converg.
 AJ7981;SPC MD       -   153,543.337   405,785.708   MT  0.99995445   +0 02 31.0
 AJ7981;SPC MD       -   503,750.10  1,331,315.28   sFT  0.99995445   +0 02 31.0
 AJ7981;UTM  18      - 4,324,087.925   332,715.145   MT  0.99994459   -1 13 05.4
 AJ7981
 AJ7981!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7981!SPC MD       -   0.99999563  x   0.99995445  =   0.99995008
 AJ7981!UTM  18      -   0.99999563  x   0.99994459  =   0.99994022
 AJ7981
 AJ7981_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3271524087(NAD 83)
 AJ7981
 AJ7981                          SUPERSEDED SURVEY CONTROL
 AJ7981
 AJ7981  NAD 83(2007)-  39 02 59.49639(N)    076 55 59.37888(W) AD(2002.00) 0
 AJ7981  ELLIP H (02/10/07)   27.854  (m)                       GP(2002.00)    
 AJ7981  NAD 83(1991)-  39 02 59.49697(N)    076 55 59.38023(W) AD(       ) A
 AJ7981  ELLIP H (02/12/02)   27.855  (m)                       GP(       ) 4 1
 AJ7981  NAVD 88 (02/12/02)   59.9    (m)  GEOID99  model used  GPS OBS        
 AJ7981
 AJ7981.Superseded values are not recommended for survey control.
 AJ7981
 AJ7981.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7981.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7981
 AJ7981_MARKER: DD = SURVEY DISK
 AJ7981_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7981_STAMPING: CALVERTON 1992
 AJ7981_MARK LOGO: MDSHA
 AJ7981_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7981+STABILITY: SURFACE MOTION
 AJ7981_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7981+SATELLITE: SATELLITE OBSERVATIONS - August 10, 2017
 AJ7981
 AJ7981  HISTORY     - Date     Condition        Report By
 AJ7981  HISTORY     - 1992     MONUMENTED       MDSHA
 AJ7981  HISTORY     - 20000412 GOOD             MDSHA
 AJ7981  HISTORY     - 20020130 GOOD             MDSHA
 AJ7981  HISTORY     - 20041122 GOOD             GEOMET
 AJ7981  HISTORY     - 20061001 GOOD             NGS
 AJ7981  HISTORY     - 20070323 GOOD             INDIV
 AJ7981  HISTORY     - 20080307 GOOD             INDIV
 AJ7981  HISTORY     - 20081203 GOOD             JMTMD
 AJ7981  HISTORY     - 20091221 GOOD             INDIV
 AJ7981  HISTORY     - 20141106 GOOD             INDIV
 AJ7981  HISTORY     - 20170810 GOOD             NGS
 AJ7981
 AJ7981                          STATION DESCRIPTION
 AJ7981
 AJ7981'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7981'THE STATION IS LOCATED ABOUT 12.0 MILES (19.3 KM) SOUTH-SOUTHEAST OF
 AJ7981'ROCKVILLE, AND 11.7 MILES (18.8 KM) NORTHEAST OF THE CENTER OF
 AJ7981'WASHINGTON D.C.  TO REACH THE STATION FROM THE INTERSECTION OF
 AJ7981'INTERSTATE HIGHWAY 95 AND CHERRY HILL ROAD, GO NORTH ALONG I-95 FOR
 AJ7981'1.4 MILES (2.3 KM) TO EXIT 29-B (MD.  212 WEST) , TAKE EXIT 29-B AND
 AJ7981'CONTINUE AROUND THE RAMP TO STATE HIGHWAY 212.  TURN LEFT AND GO WEST
 AJ7981'FOR 0.7 MILES (1.1 KM) TO THE STATION ON THE RIGHT.  THE STATION IS A
 AJ7981'MARYLAND STATE HIGHWAY SURVEY DISK SET IN THE TOP OF A 8 INCH ROUND
 AJ7981'CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND, 6.5 FEET (2.0 M)
 AJ7981'NORTH OF THE NORTH EDGE OF THE WESTBOUND SHOULDER OF STATE HIGHWAY
 AJ7981'212, 28.0 FEET (8.5 M) SOUTHEAST OF THE INTERSTATE 95 SOUTHBOUND RAMP
 AJ7981'TO STATE HIGHWAY 212, 91.0 FEET (27.7 M) EAST OF THE APEX WHERE THE
 AJ7981'SOUTHBOUND INTERSTATE 95 RAMP SHOULDER AND THE WESTBOUND STATE HIGHWAY
 AJ7981'212 SHOULDER MEET, 4.0 FEET (1.2 M) SOUTH OF A CARSONITE WITNESS POST
 AJ7981'AND LEVEL WITH THE SURFACE OF THE HIGHWAY.
 AJ7981
 AJ7981                          STATION RECOVERY (2002)
 AJ7981
 AJ7981'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 AJ7981'RECOVERED AS DESCRIBED.
 AJ7981
 AJ7981                          STATION RECOVERY (2004)
 AJ7981
 AJ7981'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2004 (KRO)
 AJ7981'RECOVERED IN GOOD CONDITION.
 AJ7981
 AJ7981                          STATION RECOVERY (2006)
 AJ7981
 AJ7981'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 AJ7981'RECOVERED IN GOOD CONDITION.
 AJ7981
 AJ7981                          STATION RECOVERY (2007)
 AJ7981
 AJ7981'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (JFS)
 AJ7981'RECOVERED AS DESCRIBED
 AJ7981
 AJ7981                          STATION RECOVERY (2008)
 AJ7981
 AJ7981'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2008
 AJ7981'DESCRIPTION IS ADEQUATE
 AJ7981
 AJ7981                          STATION RECOVERY (2008)
 AJ7981
 AJ7981'RECOVERY NOTE BY JMT ENGINEERING 2008 (EAS)
 AJ7981'USED FOR GPS RTK OBSERVATIONS
 AJ7981'CHECKED WITH RTK NET
 AJ7981'(N 0.05, E 0.10, EL 0.05)
 AJ7981
 AJ7981                          STATION RECOVERY (2009)
 AJ7981
 AJ7981'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2009 (WRA)
 AJ7981'DESCRIPTION IS ADEQUATE    CARSONITE POST IS GONE
 AJ7981'
 AJ7981
 AJ7981                          STATION RECOVERY (2014)
 AJ7981
 AJ7981'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 AJ7981'RECOVERED AS DESCRIBED,
 AJ7981'USED FOR RAPID STATIC BASE STATION
 AJ7981
 AJ7981                          STATION RECOVERY (2017)
 AJ7981
 AJ7981'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (GS)
 AJ7981'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5853 ***********************************************************************
 HV5853  DESIGNATION -  CAM
 HV5853  PID         -  HV5853
 HV5853  STATE/COUNTY-  MD/TALBOT
 HV5853  COUNTRY     -  US
 HV5853  USGS QUAD   -  TRAPPE (2016)
 HV5853
 HV5853                         *CURRENT SURVEY CONTROL
 HV5853  ______________________________________________________________________
 HV5853* NAD 83(1991) POSITION- 38 42 37.90321(N) 076 06 49.04104(W)   ADJUSTED
 HV5853* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5853  ______________________________________________________________________
 HV5853  GEOID HEIGHT    -        -34.716 (meters)                     GEOID18
 HV5853  LAPLACE CORR    -         -3.45  (seconds)                    DEFLEC18
 HV5853  HORZ ORDER      -  THIRD
 HV5853
 HV5853.The horizontal coordinates were established by classical geodetic methods
 HV5853.and adjusted by the National Geodetic Survey in January 1992.
 HV5853
 HV5853.The orthometric height was scaled from a topographic map.
 HV5853
 HV5853.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5853.GEOID18 height accuracy estimate available here.
 HV5853
 HV5853.Click photographs - Photos may exist for this station.
 HV5853
 HV5853.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5853
 HV5853. The following values were computed from the NAD 83(1991) position.
 HV5853
 HV5853;                    North         East     Units Scale Factor Converg.
 HV5853;SPC MD       -   116,247.048   477,090.816   MT  0.99995399   +0 33 22.8
 HV5853;SPC MD       -   381,387.19  1,565,255.45   sFT  0.99995399   +0 33 22.8
 HV5853;UTM  18      - 4,285,242.935   403,176.450   MT  0.99971544   -0 41 47.4
 HV5853
 HV5853!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5853!SPC MD       -   1.00000533  x   0.99995399  =   0.99995932
 HV5853!UTM  18      -   1.00000533  x   0.99971544  =   0.99972077
 HV5853
 HV5853:                Primary Azimuth Mark                     Grid Az
 HV5853:SPC MD       -  DEUX                                     235 38 08.5
 HV5853:UTM  18      -  DEUX                                     236 53 18.7
 HV5853
 HV5853_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0317685242(NAD 83)
 HV5853
 HV5853|---------------------------------------------------------------------|
 HV5853| PID    Reference Object                     Distance      Geod. Az  |
 HV5853|                                                           dddmmss.s |
 HV5853| HV5846 ALL                                 393.382 METERS 07056     |
 HV5853| HV5850 DEUX                                458.730 METERS 2361131.3 |
 HV5853| HV5828 PLOW                                APPROX. 0.5 KM 3393037.3 |
 HV5853|---------------------------------------------------------------------|
 HV5853
 HV5853                          SUPERSEDED SURVEY CONTROL
 HV5853
 HV5853  NAD 83(1986)-  38 42 37.89952(N)    076 06 49.05716(W) AD(       ) 3
 HV5853  NAD 27      -  38 42 37.46200(N)    076 06 50.29500(W) AD(       ) 3
 HV5853  USSD        -  38 42 37.86000(N)    076 06 50.08800(W) AD(       ) 3
 HV5853
 HV5853.Superseded values are not recommended for survey control.
 HV5853
 HV5853.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5853.See file dsdata.pdf to determine how the superseded data were derived.
 HV5853
 HV5853_MARKER: H = DRILL HOLE
 HV5853_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5853_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5853
 HV5853  HISTORY     - Date     Condition        Report By
 HV5853  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5853  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5853
 HV5853                          STATION DESCRIPTION
 HV5853
 HV5853'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5853'ON THE SOUTHERN SHORE OF TRIPPE CREEK, ON A PROMINENT POINT ABOUT
 HV5853'1-1/2 MILES FROM WHERE TRIPPE CREEK ENTERS TRED AVON RIVER, ON A
 HV5853'MARSH POINT, ABOUT 10 YARDS SE OF SHORE, 20 YARDS SSW OF POINT OF
 HV5853'SHORE, AND 15 YARDS NE BY E OF POINT OF BANK AT MARSH.  STATION IS
 HV5853'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5853'SURVEY STANDARD MONUMENT AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5853'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV5853'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS
 HV5853'THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2
 HV5853'INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV5853'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 HV5853'5-INCH OAK TREE, 15.77 METERS (51.7 FEET), S 10 DEG 11 MIN W.
 HV5853'NAIL IN BLAZE IN 5-INCH OAK TREE, 16.93 METERS (55.5 FEET), S 27
 HV5853'DEG 15 MIN W. LEFT CORNER OF LARGE CHIMNEY, 1/4 MILE, S 52 DEG 50
 HV5853'MIN W.  LEFT PEAK OF BARN SHOWING THROUGH TREES, 7/8 MILE, N 64
 HV5853'DEG 56 MIN W. RIGHT PEAK OF BARN WITH CUPOLA, 1/2 MILE, N 10 DEG
 HV5853'53 MIN W.  LEFT CORNER OF UNDERPINNING OF GOLDSBOROUGHS HOUSE, 3/8
 HV5853'MILE, N 72 DEG 37 MIN E.  RIGHT CORNER OF LARGE CHIMNEY, 5/8 MILE,
 HV5853'S 79 DEG 40 MIN E.  LEFT PEAK OF HOUSE, 5/8 MILE, S 60 DEG 7 MIN
 HV5853'E.  NAIL IN BLAZE IN 4-INCH PERSIMMON TREE, 23.51 METERS (77.1
 HV5853'FEET), S 16 DEG 20 MIN E.
 HV5853
 HV5853                          STATION RECOVERY (1940)
 HV5853
 HV5853'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5853'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  HAS EVIDENTLY BEEN
 HV5853'WASHED OUT, SHORE LINE SHOWS CONSIDERABLE EROSION.  LOCAL RESIDENT
 HV5853'HAS NEVER SEEN MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL8743 ***********************************************************************
 DL8743  TIDAL BM    -  This is a Tidal Bench Mark.
 DL8743  DESIGNATION -  CAM
 DL8743  PID         -  DL8743
 DL8743  STATE/COUNTY-  MD/DORCHESTER
 DL8743  COUNTRY     -  US
 DL8743  USGS QUAD   -  CAMBRIDGE (2016)
 DL8743
 DL8743                         *CURRENT SURVEY CONTROL
 DL8743  ______________________________________________________________________
 DL8743* NAD 83(1986) POSITION- 38 34 12.83   (N) 076 04 27.01   (W)   HD_HELD1
 DL8743* NAVD 88 ORTHO HEIGHT -     3.211 (meters)       10.53  (feet) ADJUSTED
 DL8743  ______________________________________________________________________
 DL8743  GEOID HEIGHT    -        -35.037 (meters)                     GEOID18
 DL8743  DYNAMIC HEIGHT  -          3.210 (meters)       10.53  (feet) COMP
 DL8743  MODELED GRAVITY -    980,017.6   (mgal)                       NAVD 88
 DL8743
 DL8743  VERT ORDER      -  FIRST     CLASS II
 DL8743
 DL8743.The horizontal coordinates were determined by differentially corrected
 DL8743.hand held GPS observations or other comparable positioning techniques
 DL8743.and have an estimated accuracy of +/- 3 meters.
 DL8743
 DL8743.The orthometric height was determined by differential leveling and
 DL8743.adjusted by the NATIONAL GEODETIC SURVEY
 DL8743.in August 2010.
 DL8743
 DL8743.No vertical observational check was made to the station.
 DL8743
 DL8743.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL8743.GEOID18 height accuracy estimate available here.
 DL8743
 DL8743.This Tidal Bench Mark is designated as VM 13823
 DL8743.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DL8743
 DL8743.Click photographs - Photos may exist for this station.
 DL8743
 DL8743.The dynamic height is computed by dividing the NAVD 88
 DL8743.geopotential number by the normal gravity value computed on the
 DL8743.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL8743.degrees latitude (g = 980.6199 gals.).
 DL8743
 DL8743.The modeled gravity was interpolated from observed gravity values.
 DL8743
 DL8743;                    North         East    Units  Estimated Accuracy
 DL8743;SPC MD       -   100,708.3     480,680.0     MT  (+/- 3 meters HH1 GPS) 
 DL8743
 DL8743_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0642469633(NAD 83)
 DL8743
 DL8743                          SUPERSEDED SURVEY CONTROL
 DL8743
 DL8743.No superseded survey control is available for this station.
 DL8743
 DL8743_MARKER: DS = TRIANGULATION STATION DISK
 DL8743_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DL8743_SP_SET: BRIDGE SIDEWALK
 DL8743_STAMPING: CAM 1980
 DL8743_MARK LOGO: USACE
 DL8743_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL8743_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DL8743_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL8743+SATELLITE: SATELLITE OBSERVATIONS - July 15, 2012
 DL8743
 DL8743  HISTORY     - Date     Condition        Report By
 DL8743  HISTORY     - 1980     MONUMENTED       USACE
 DL8743  HISTORY     - 20090218 GOOD             CO-OPS
 DL8743  HISTORY     - 20120715 GOOD             GEOCAC
 DL8743
 DL8743                          STATION DESCRIPTION
 DL8743
 DL8743'DESCRIBED BY CEN OPER OCEANOG PROD+SVCS 2009 (OJ)
 DL8743'THE MARK IS LOCATED ABOUT 8.8 KM (5.5 MI) NORTHWEST OF AIREY, 6.5 KM
 DL8743'(4.0 MI) WEST-NORTHWEST OF MOUNT HOLLY AND IN THE CITY OF CAMBRIDGE.
 DL8743'
 DL8743'TO REACH FROM THE JUNCTION OF US 50 AND MARYLAND AVENUE, GO
 DL8743'WEST-NORTHWEST ON MARYLAND AVENUE FOR 0.89 KM (0.6 MI) TO THE MARK ON
 DL8743'THE LEFT.
 DL8743'
 DL8743'IT IS 44.10 M (144.7 FT) WEST OF THE CENTERLINE OF THE OPENING OF THE
 DL8743'DRAW BRIDGE, 34.11 M (111.9 FT) WEST OF THE WEST EDGE OF THE BRIDGE
 DL8743'SPAN, 15.42 M (50.6 FT) EAST OF THE BRIDGE STOPLIGHT AT THE WEST END
 DL8743'OF THE BRIDGE, 4.83 M (15.8 FT) SOUTH-SOUTHWEST OF THE CENTERLINE OF
 DL8743'THE BRIDGE ROAD AND 0.73 M (2.4 FT) NORTH OF THE CONCRETE RAILING.
 DL8743
 DL8743                          STATION RECOVERY (2012)
 DL8743
 DL8743'RECOVERY NOTE BY GEOCACHING 2012 (MFM)
 DL8743'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6909 ***********************************************************************
 JV6909  DESIGNATION -  CAM STA 1
 JV6909  PID         -  JV6909
 JV6909  STATE/COUNTY-  MD/MONTGOMERY
 JV6909  COUNTRY     -  US
 JV6909  USGS QUAD   -  ROCKVILLE (2016)
 JV6909
 JV6909                         *CURRENT SURVEY CONTROL
 JV6909  ______________________________________________________________________
 JV6909* NAD 83(2011) POSITION- 39 07 20.66670(N) 077 13 14.21724(W)   ADJUSTED
 JV6909* NAD 83(2011) ELLIP HT-    93.380 (meters)        (06/27/12)   ADJUSTED
 JV6909* NAD 83(2011) EPOCH   -  2010.00
 JV6909* NAVD 88 ORTHO HEIGHT -   125.126 (meters)      410.52  (feet) ADJUSTED
 JV6909  ______________________________________________________________________
 JV6909  GEOID HEIGHT    -        -31.737 (meters)                     GEOID18
 JV6909  NAD 83(2011) X  -  1,095,997.992 (meters)                     COMP
 JV6909  NAD 83(2011) Y  - -4,832,100.292 (meters)                     COMP
 JV6909  NAD 83(2011) Z  -  4,002,927.640 (meters)                     COMP
 JV6909  LAPLACE CORR    -          1.38  (seconds)                    DEFLEC18
 JV6909  DYNAMIC HEIGHT  -        125.061 (meters)      410.30  (feet) COMP
 JV6909  MODELED GRAVITY -    980,102.4   (mgal)                       NAVD 88
 JV6909
 JV6909  VERT ORDER      -  FIRST     CLASS I
 JV6909
 JV6909  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6909  Standards:
 JV6909         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6909            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6909  -------------------------------------------------------------------
 JV6909  NETWORK    1.07   1.59           0.50   0.35   0.81      0.06572213
 JV6909  -------------------------------------------------------------------
 JV6909  Click here for local accuracies and other accuracy information.
 JV6909
 JV6909.The horizontal coordinates were established by GPS observations
 JV6909.and adjusted by the National Geodetic Survey in June 2012.
 JV6909
 JV6909.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6909.been affixed to the stable North American tectonic plate. See 
 JV6909.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6909
 JV6909.The horizontal coordinates are valid at the epoch date displayed above
 JV6909.which is a decimal equivalence of Year/Month/Day.
 JV6909
 JV6909.The orthometric height was determined by differential leveling and
 JV6909.adjusted by the NATIONAL GEODETIC SURVEY
 JV6909.in July 1994.
 JV6909
 JV6909.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6909.GEOID18 height accuracy estimate available here.
 JV6909
 JV6909.Click photographs - Photos may exist for this station.
 JV6909
 JV6909.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6909
 JV6909.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6909
 JV6909.The ellipsoidal height was determined by GPS observations
 JV6909.and is referenced to NAD 83.
 JV6909
 JV6909.The dynamic height is computed by dividing the NAVD 88
 JV6909.geopotential number by the normal gravity value computed on the
 JV6909.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6909.degrees latitude (g = 980.6199 gals.).
 JV6909
 JV6909.The modeled gravity was interpolated from observed gravity values.
 JV6909
 JV6909. The following values were computed from the NAD 83(2011) position.
 JV6909
 JV6909;                    North         East     Units Scale Factor Converg.
 JV6909;SPC MD       -   161,617.913   380,922.610   MT  0.99995908   -0 08 18.5
 JV6909;SPC MD       -   530,241.44  1,249,743.60   sFT  0.99995908   -0 08 18.5
 JV6909;UTM  18      - 4,332,708.306   308,034.831   MT  1.00005377   -1 24 05.7
 JV6909
 JV6909!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6909!SPC MD       -   0.99998535  x   0.99995908  =   0.99994443
 JV6909!UTM  18      -   0.99998535  x   1.00005377  =   1.00003912
 JV6909
 JV6909_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0803432708(NAD 83)
 JV6909
 JV6909                          SUPERSEDED SURVEY CONTROL
 JV6909
 JV6909  NAD 83(2007)-  39 07 20.66690(N)    077 13 14.21806(W) AD(2002.00) 0
 JV6909  ELLIP H (02/10/07)   93.414  (m)                       GP(2002.00)    
 JV6909  ELLIP H (08/30/02)   93.416  (m)                       GP(       ) 4 2
 JV6909  NAD 83(1991)-  39 07 20.66403(N)    077 13 14.21601(W) AD(       ) 1
 JV6909  ELLIP H (03/04/93)   93.363  (m)                       GP(       ) 4 1
 JV6909  NAVD 88 (03/04/93)  125.1    (m)  GEOID90  model used  GPS OBS        
 JV6909
 JV6909.Superseded values are not recommended for survey control.
 JV6909
 JV6909.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6909.See file dsdata.pdf to determine how the superseded data were derived.
 JV6909
 JV6909_MARKER: I = METAL ROD
 JV6909_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6909_STAMPING: CAM. STA. 1
 JV6909_MARK LOGO: NGS
 JV6909_PROJECTION: FLUSH
 JV6909_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6909_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6909_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6909+SATELLITE: SATELLITE OBSERVATIONS - June 08, 1992
 JV6909_ROD/PIPE-DEPTH: 21 meters
 JV6909
 JV6909  HISTORY     - Date     Condition        Report By
 JV6909  HISTORY     - 1991     MONUMENTED       NGS
 JV6909  HISTORY     - 19911015 GOOD             NGS
 JV6909  HISTORY     - 19920608 GOOD
 JV6909  HISTORY     - 19970912 GOOD             NGS
 JV6909
 JV6909                          STATION DESCRIPTION
 JV6909
 JV6909'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6909'GO WEST ALONG SOUTH DRIVE FOR 0.25 MILES (0.40 KM) FROM THE
 JV6909'INTERSECTION OF SOUTH DRIVE EAST DRIVE TO CENTER DRIVE, THENCE 0.80
 JV6909'MILES (1.29 KM) SOUTH ALONG CENTER DRIVE TO HAZZARD BUILDING NO.
 JV6909'236, THENCE .10 MILE (0.16 KM) IN A WESTERLY DIRECTION ALONG ACCESS
 JV6909'ROAD TO EXPOSURE SITE, IN THE CENTER OF ONE METER SQUARE CONCRETE
 JV6909'PAD, 7.48MSOUTWEST OF SOUTHWEST CORNER OF THE STONE TEST WALL, 19.6 M
 JV6909'(64.3 FT) SOUTHWEST OF AN OAK TREE,AND 38.8 M (127.3 FT) EAST AN OAK
 JV6909'TREE.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5 INCH LOGO CAP.
 JV6909
 JV6909                          STATION RECOVERY (1992)
 JV6909
 JV6909'RECOVERED 1992
 JV6909'RECOVERED IN GOOD CONDITION.
 JV6909
 JV6909                          STATION RECOVERY (1997)
 JV6909
 JV6909'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (RLA)
 JV6909'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8840 ***********************************************************************
 HV8840  PACS        -  This is a Primary Airport Control Station.
 HV8840  DESIGNATION -  CAMBPORT
 HV8840  PID         -  HV8840
 HV8840  STATE/COUNTY-  MD/DORCHESTER
 HV8840  COUNTRY     -  US
 HV8840  USGS QUAD   -  CAMBRIDGE (2016)
 HV8840
 HV8840                         *CURRENT SURVEY CONTROL
 HV8840  ______________________________________________________________________
 HV8840* NAD 83(2011) POSITION- 38 32 11.42752(N) 076 01 38.49022(W)   ADJUSTED
 HV8840* NAD 83(2011) ELLIP HT-   -30.553 (meters)        (06/27/12)   ADJUSTED
 HV8840* NAD 83(2011) EPOCH   -  2010.00
 HV8840* NAVD 88 ORTHO HEIGHT -     4.61  (meters)       15.1   (feet) GPS OBS
 HV8840  ______________________________________________________________________
 HV8840  NAVD 88 orthometric height was determined with geoid model    GEOID96
 HV8840  GEOID HEIGHT    -        -35.149 (meters)                     GEOID96
 HV8840  GEOID HEIGHT    -        -35.172 (meters)                     GEOID18
 HV8840  NAD 83(2011) X  -  1,206,211.449 (meters)                     COMP
 HV8840  NAD 83(2011) Y  - -4,847,709.808 (meters)                     COMP
 HV8840  NAD 83(2011) Z  -  3,952,181.137 (meters)                     COMP
 HV8840  LAPLACE CORR    -         -2.82  (seconds)                    DEFLEC18
 HV8840
 HV8840  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8840  Standards:
 HV8840         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8840            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8840  -------------------------------------------------------------------
 HV8840  NETWORK    1.17   1.16           0.48   0.47   0.59     -0.21637527
 HV8840  -------------------------------------------------------------------
 HV8840  Click here for local accuracies and other accuracy information.
 HV8840
 HV8840.This mark is at Cambridge-Dorchester Airport (CGE)
 HV8840
 HV8840.The horizontal coordinates were established by GPS observations
 HV8840.and adjusted by the National Geodetic Survey in June 2012.
 HV8840
 HV8840.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8840.been affixed to the stable North American tectonic plate. See 
 HV8840.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8840
 HV8840.The horizontal coordinates are valid at the epoch date displayed above
 HV8840.which is a decimal equivalence of Year/Month/Day.
 HV8840
 HV8840.The orthometric height was determined by GPS observations and a
 HV8840.high-resolution geoid model.
 HV8840
 HV8840.GPS derived orthometric heights for airport stations designated as
 HV8840.PACS or SACS are published to 2 decimal places.  This maintains
 HV8840.centimeter relative accuracy between the PACS and SACS.  It does
 HV8840.not indicate centimeter accuracy relative to other marks which are
 HV8840.part of the published vertical control network.
 HV8840
 HV8840.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8840.GEOID18 height accuracy estimate available here.
 HV8840
 HV8840.Click photographs - Photos may exist for this station.
 HV8840
 HV8840.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8840
 HV8840.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8840
 HV8840.The ellipsoidal height was determined by GPS observations
 HV8840.and is referenced to NAD 83.
 HV8840
 HV8840. The following values were computed from the NAD 83(2011) position.
 HV8840
 HV8840;                    North         East     Units Scale Factor Converg.
 HV8840;SPC MD       -    97,007.533   484,798.995   MT  0.99996728   +0 36 37.7
 HV8840;SPC MD       -   318,265.55  1,590,544.70   sFT  0.99996728   +0 36 37.7
 HV8840;UTM  18      - 4,265,844.542   410,460.683   MT  0.99969873   -0 38 24.4
 HV8840
 HV8840!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8840!SPC MD       -   1.00000479  x   0.99996728  =   0.99997207
 HV8840!UTM  18      -   1.00000479  x   0.99969873  =   0.99970352
 HV8840
 HV8840:                Primary Azimuth Mark                     Grid Az
 HV8840:SPC MD       -  CAMBPORT AZ MK                           323 21 21.5
 HV8840:UTM  18      -  CAMBPORT AZ MK                           324 36 23.6
 HV8840
 HV8840_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1046065844(NAD 83)
 HV8840
 HV8840|---------------------------------------------------------------------|
 HV8840| PID    Reference Object                     Distance      Geod. Az  |
 HV8840|                                                           dddmmss.s |
 HV8840| HV0233 M 127                               371.314 METERS 27913     |
 HV8840| AH8661 CGE A                               308.445 METERS 30335     |
 HV8840| HV8841 CAMBPORT AZ MK                      APPROX. 0.8 KM 3235759.2 |
 HV8840|---------------------------------------------------------------------|
 HV8840
 HV8840                          SUPERSEDED SURVEY CONTROL
 HV8840
 HV8840  NAD 83(2007)-  38 32 11.42779(N)    076 01 38.49112(W) AD(2002.00) 0
 HV8840  ELLIP H (02/10/07)  -30.519  (m)                       GP(2002.00)    
 HV8840  ELLIP H (10/28/02)  -30.518  (m)                       GP(       ) 4 2
 HV8840  ELLIP H (09/18/02)  -30.470  (m)                       GP(       ) 4 2
 HV8840  NAD 83(1991)-  38 32 11.42795(N)    076 01 38.49161(W) AD(       ) B
 HV8840  ELLIP H (10/08/97)  -30.524  (m)                       GP(       ) 4 1
 HV8840  NAD 83(1991)-  38 32 11.42621(N)    076 01 38.49024(W) AD(       ) 1
 HV8840  ELLIP H (01/27/92)  -30.606  (m)                       GP(       ) 4 1
 HV8840  NAD 83(1986)-  38 32 11.42346(N)    076 01 38.50650(W) AD(       ) 1
 HV8840  NAD 27      -  38 32 10.99429(N)    076 01 39.73308(W) AD(       ) 1
 HV8840  NAVD 88 (08/24/95)    4.7    (m)  GEOID93  model used  GPS OBS        
 HV8840  NGVD 29               4.85   (m)           15.9    (f) LEVELING    3  
 HV8840
 HV8840.Superseded values are not recommended for survey control.
 HV8840
 HV8840.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8840.See file dsdata.pdf to determine how the superseded data were derived.
 HV8840
 HV8840_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8840_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8840_STAMPING: CAMBPORT 1985
 HV8840_MARK LOGO: NGS
 HV8840_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8840_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8840+STABILITY: SURFACE MOTION
 HV8840_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8840+SATELLITE: SATELLITE OBSERVATIONS - December 12, 2006
 HV8840
 HV8840  HISTORY     - Date     Condition        Report By
 HV8840  HISTORY     - 1985     MONUMENTED       NGS
 HV8840  HISTORY     - 19860130 GOOD
 HV8840  HISTORY     - 19941029 GOOD             NOS
 HV8840  HISTORY     - 19960807 GOOD             NGS
 HV8840  HISTORY     - 19960905 GOOD             NGS
 HV8840  HISTORY     - 20061212 GOOD             AME
 HV8840
 HV8840                          STATION DESCRIPTION
 HV8840
 HV8840'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 HV8840'THE STATION IS LOCATED ABOUT 5.8 KM (3.6 MI) SOUTHEAST FROM CAMBRIDGE,
 HV8840'1.5 KM (0.95 MI) SOUTH FROM JACKTOWN AND AT THE CAMBRIDGE DORCHESTER
 HV8840'COUNTY AIRPORT.
 HV8840'
 HV8840'OWNERSHIP--AIRPORT PROPERTY.
 HV8840'
 HV8840'TO REACH FROM THE SOUTH END OF THE U.S. HIGHWAY 50 BRIDGE OVER
 HV8840'CHOPTANK RIVER AT CAMBRIDGE, GO SOUTH THEN EAST ON U.S. HIGHWAY 50
 HV8840'FOR 3.25 KM (2.0 MI) TO A CROSSROADS.  TURN RIGHT AND GO SOUTHEAST ON
 HV8840'BUCKTOWN ROAD FOR 2.15 KM (1.35 MI) TO A SIDE ROAD LEFT.  TURN LEFT
 HV8840'AND GO NORTHEAST ON A PAVED ROAD FOR 0.1 KM (0.05 MI) TO THE AIRPORT
 HV8840'ADMINISTRATION BUILDING ON THE LEFT.  CONTINUE NORTHEAST ACROSS THE
 HV8840'AIRPORT PARKING AREA FOR 0.1 KM (0.05 MI) TO A TAXI STRIP.  TURN
 HV8840'RIGHT AND GO SOUTHEAST ALONG THE TAXI STRIP FOR 0.3 KM (0.2 MI) TO
 HV8840'THE STATION ON THE LEFT ACROSS THE RUNWAY.
 HV8840'
 HV8840'THE STATION SURFACE MARK IS A STANDARD NGS DISK STAMPED--CAMBPORT
 HV8840'1985--SET IN THE TOP OF A 30 CM (12 INCH) ROUND CONCRETE MONUMENT
 HV8840'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV8840'
 HV8840'THE SUB-SURFACE MARK IS A STANDARD NGS AZIMUTH MARK DISK
 HV8840'STAMPED--CAMBPORT 1985--SET IN THE TOP OF A 15 CM (6 INCH) MASS OF
 HV8840'CONCRETE WHICH IS 1.1 METERS (3.6 FT) BELOW THE SURFACE OF THE
 HV8840'GROUND.
 HV8840'
 HV8840'THE STATION IS LOCATED 17.8 METERS (58.5 FT) EAST FROM THE EAST
 HV8840'EDGE OF THE RUNWAY, 14.7 METERS (48.1 FT) EAST FROM THE FOURTH
 HV8840'WHITE LIGHT FROM THE SOUTH END OF THE RUNWAY, AND 0.7 M (2.2 FT)
 HV8840'WEST FROM A CARSONITE WITNESS POST.  IT IS NEAR THE SOUTH END OF
 HV8840'RUNWAY NUMBERED 4.
 HV8840
 HV8840                          STATION RECOVERY (1986)
 HV8840
 HV8840'RECOVERED 1986
 HV8840'RECOVERED IN GOOD CONDITION.
 HV8840
 HV8840                          STATION RECOVERY (1994)
 HV8840
 HV8840'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1994 (RJH)
 HV8840'RECOVERED AS DESCRIBED.
 HV8840
 HV8840                          STATION RECOVERY (1996)
 HV8840
 HV8840'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (DMM)
 HV8840'RECOVERED AS DESCRIBED WITH THE FOLLOWING CORRECTIONS.  STATION IS
 HV8840'LOCATED ON THE EAST SIDE OF THE RUNWAY ABOUT 800 FT (243.8 M) NORTH OF
 HV8840'RUNWAY END 34 NOT 4.  TO REACH FROM THE AIRPORT OFFICE, A BRICK
 HV8840'BUILDING, DRIVE EAST ACROSS THE RAMP TO THE JUNCTION OF THE TAXIWAY
 HV8840'RUNNING PARALLEL TO THE RUNWAY AND A TAXIWAY CONNECTING TO THE RUNWAY.
 HV8840'FROM THE JUNCTION DRIVE SOUTH TO THE NEXT CONNECTOR TAXIWAY, TURN LEFT
 HV8840'ONTO THE CONNECTOR TAXIWAY THEN RIGHT, SOUTH, ON THE RUNWAY FOR A
 HV8840'TOTAL DISTANCE OF 0.2 MI (0.3 KM) AND THE STATION IN THE GRASS ON THE
 HV8840'EAST SIDE OF THE RUNWAY.  IT IS 58.5 FT (17.8 M) EAST OF THE EAST EDGE
 HV8840'OF THE RUNWAY AND 48.1 FT (14.7 M) EAST OF THE FOURTH RUNWAY LIGHT
 HV8840'FROM THE SOUTH END OF THE RUNWAY.  THE STATION IS APPROXIMATELY ON
 HV8840'LINE WITH THE LINE FORMED BY THE RUNWAY LIGHTS ON EACH SIDE OF THE
 HV8840'RUNWAY.
 HV8840
 HV8840                          STATION RECOVERY (1996)
 HV8840
 HV8840'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 HV8840'RECOVERED AS DESCRIBED WITH THE FOLLOWING ADDITIONS.  CONTACT MR. SNAP
 HV8840'JOHNSON, AIRPORT MANAGER (410) 228-4571, 5223 BUCKTOWN RD, CAMBRIDGE,
 HV8840'MD 21613 FOR PERMISSION TO ACCESS MARK.  STATION IS AIRPORT PACS.
 HV8840
 HV8840                          STATION RECOVERY (2006)
 HV8840
 HV8840'RECOVERY NOTE BY AERO-METRIC ENGINEERING INCORPORATED 2006 (CF)
 HV8840'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8841 ***********************************************************************
 HV8841  SACS        -  This is a Secondary Airport Control Station.
 HV8841  DESIGNATION -  CAMBPORT AZ MK
 HV8841  PID         -  HV8841
 HV8841  STATE/COUNTY-  MD/DORCHESTER
 HV8841  COUNTRY     -  US
 HV8841  USGS QUAD   -  CAMBRIDGE (2016)
 HV8841
 HV8841                         *CURRENT SURVEY CONTROL
 HV8841  ______________________________________________________________________
 HV8841* NAD 83(2011) POSITION- 38 32 32.20553(N) 076 01 57.73586(W)   ADJUSTED
 HV8841* NAD 83(2011) ELLIP HT-   -30.031 (meters)        (06/27/12)   ADJUSTED
 HV8841* NAD 83(2011) EPOCH   -  2010.00
 HV8841* NAVD 88 ORTHO HEIGHT -     5.12  (meters)       16.8   (feet) GPS OBS
 HV8841  ______________________________________________________________________
 HV8841  NAVD 88 orthometric height was determined with geoid model    GEOID96
 HV8841  GEOID HEIGHT    -        -35.132 (meters)                     GEOID96
 HV8841  GEOID HEIGHT    -        -35.154 (meters)                     GEOID18
 HV8841  NAD 83(2011) X  -  1,205,662.874 (meters)                     COMP
 HV8841  NAD 83(2011) Y  - -4,847,435.348 (meters)                     COMP
 HV8841  NAD 83(2011) Z  -  3,952,682.598 (meters)                     COMP
 HV8841  LAPLACE CORR    -         -2.94  (seconds)                    DEFLEC18
 HV8841
 HV8841  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8841  Standards:
 HV8841         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8841            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8841  -------------------------------------------------------------------
 HV8841  NETWORK    1.22   1.20           0.50   0.49   0.61     -0.21313311
 HV8841  -------------------------------------------------------------------
 HV8841  Click here for local accuracies and other accuracy information.
 HV8841
 HV8841.This mark is at Cambridge-Dorchester Airport (CGE)
 HV8841
 HV8841.The horizontal coordinates were established by GPS observations
 HV8841.and adjusted by the National Geodetic Survey in June 2012.
 HV8841
 HV8841.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8841.been affixed to the stable North American tectonic plate. See 
 HV8841.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8841
 HV8841.The horizontal coordinates are valid at the epoch date displayed above
 HV8841.which is a decimal equivalence of Year/Month/Day.
 HV8841
 HV8841.The orthometric height was determined by GPS observations and a
 HV8841.high-resolution geoid model.
 HV8841
 HV8841.GPS derived orthometric heights for airport stations designated as
 HV8841.PACS or SACS are published to 2 decimal places.  This maintains
 HV8841.centimeter relative accuracy between the PACS and SACS.  It does
 HV8841.not indicate centimeter accuracy relative to other marks which are
 HV8841.part of the published vertical control network.
 HV8841
 HV8841.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8841.GEOID18 height accuracy estimate available here.
 HV8841
 HV8841.Click photographs - Photos may exist for this station.
 HV8841
 HV8841.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8841
 HV8841.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8841
 HV8841.The ellipsoidal height was determined by GPS observations
 HV8841.and is referenced to NAD 83.
 HV8841
 HV8841. The following values were computed from the NAD 83(2011) position.
 HV8841
 HV8841;                    North         East     Units Scale Factor Converg.
 HV8841;SPC MD       -    97,643.217   484,326.136   MT  0.99996669   +0 36 25.6
 HV8841;SPC MD       -   320,351.12  1,588,993.33   sFT  0.99996669   +0 36 25.6
 HV8841;UTM  18      - 4,266,490.222   410,001.934   MT  0.99969974   -0 38 36.6
 HV8841
 HV8841!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8841!SPC MD       -   1.00000471  x   0.99996669  =   0.99997140
 HV8841!UTM  18      -   1.00000471  x   0.99969974  =   0.99970445
 HV8841
 HV8841:                Primary Azimuth Mark                     Grid Az
 HV8841:SPC MD       -  CAMBPORT                                 143 21 21.7
 HV8841:UTM  18      -  CAMBPORT                                 144 36 23.9
 HV8841
 HV8841_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1000166490(NAD 83)
 HV8841
 HV8841|---------------------------------------------------------------------|
 HV8841| PID    Reference Object                     Distance      Geod. Az  |
 HV8841|                                                           dddmmss.s |
 HV8841| HV8840 CAMBPORT                            APPROX. 0.8 KM 1435747.3 |
 HV8841|---------------------------------------------------------------------|
 HV8841
 HV8841                          SUPERSEDED SURVEY CONTROL
 HV8841
 HV8841  NAD 83(2007)-  38 32 32.20581(N)    076 01 57.73676(W) AD(2002.00) 0
 HV8841  ELLIP H (02/10/07)  -29.997  (m)                       GP(2002.00)    
 HV8841  ELLIP H (01/21/03)  -29.995  (m)                       GP(       ) 4 1
 HV8841  NAD 83(1991)-  38 32 32.20597(N)    076 01 57.73725(W) AD(       ) 1
 HV8841  ELLIP H (03/25/99)  -30.001  (m)                       GP(       ) 4 1
 HV8841  NAD 83(1991)-  38 32 32.20435(N)    076 01 57.73587(W) AD(       ) 1
 HV8841  ELLIP H (01/27/92)  -30.096  (m)                       GP(       ) 4 1
 HV8841  NAD 83(1986)-  38 32 32.20159(N)    076 01 57.75212(W) AD(       ) 1
 HV8841  NAD 27      -  38 32 31.77270(N)    076 01 58.97795(W) AD(       ) 1
 HV8841  NGVD 29               5.35   (m)           17.6    (f) LEVELING    3  
 HV8841
 HV8841.Superseded values are not recommended for survey control.
 HV8841
 HV8841.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8841.See file dsdata.pdf to determine how the superseded data were derived.
 HV8841
 HV8841_MARKER: DZ = AZIMUTH MARK DISK
 HV8841_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8841_STAMPING: CAMBPORT 1985
 HV8841_MARK LOGO: NGS
 HV8841_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8841_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8841+STABILITY: SURFACE MOTION
 HV8841_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8841+SATELLITE: SATELLITE OBSERVATIONS - September 05, 1996
 HV8841
 HV8841  HISTORY     - Date     Condition        Report By
 HV8841  HISTORY     - 1985     MONUMENTED       NGS
 HV8841  HISTORY     - 19860203 GOOD
 HV8841  HISTORY     - 19960905 GOOD             NGS
 HV8841
 HV8841                          STATION DESCRIPTION
 HV8841
 HV8841'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 HV8841'THE STATION IS LOCATED ABOUT 5-3/4 KM (3-1/2 MI) SOUTHEAST FROM
 HV8841'CAMBRIDGE, 1.5 KM (1 MI) SOUTH FROM JACKSON AND AT THE CAMBRIDGE,
 HV8841'DORCHESTER COUNTY AIRPORT.
 HV8841'
 HV8841'OWNERSHIP--AIRPORT PROPERTY.
 HV8841'
 HV8841'TO REACH FROM THE SOUTH END OF THE U.S. HIGHWAY 50 BRIDGE OVER THE
 HV8841'CHOPTANK RIVER AT CAMBRIDGE, GO SOUTH AND EAST ON U.S. HIGHWAY 50 FOR
 HV8841'3.25 KM (2.0 MI) TO A CROSSROADS.  TURN RIGHT AND GO SOUTHEAST ON
 HV8841'BUCKTOWN ROAD FOR 2.15 KM (1.35 MI) TO A SIDE ROAD LEFT.  TURN LEFT
 HV8841'AND GO NORTHEAST ON A PAVED ROAD FOR 0.1 KM (0.05 MI) TO THE
 HV8841'AIRPORT ADMINISTRATION BUILDING ON THE LEFT.  CONTINUE NORTHEAST
 HV8841'ACROSS THE AIRPORT PARKING AREA FOR 0.1 KM (0.05 MI) TO A TAXI STRIP.
 HV8841'TURN LEFT AND GO NORTHWEST ON THE TAXI STRIP FOR 0.5 KM (0.3 MI)
 HV8841'TO THE STATION ON THE RIGHT ACROSS THE RUNWAY.
 HV8841'
 HV8841'THE STATION SURFACE MARK IS A STANDARD NGS AZIMUTH MARK DISK
 HV8841'STAMPED--CAMBPORT 1985--SET IN THE TOP OF A 30 CM (12 INCH) ROUND
 HV8841'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV8841'THE SUB-SURFACE MARK IS ALSO A STANDARD NGS AZIMUTH MARK DISK
 HV8841'STAMPED--CAMBPORT 1985--SET IN THE TOP OF A 15 CM (6 INCH) MASS OF
 HV8841'CONCRETE WHICH IS 1.1 METERS (3.6 FT) BELOW THE SURFACE OF THE
 HV8841'GROUND.
 HV8841'
 HV8841'THE STATION IS LOCATED 20.0 METERS (65.5 FT) EAST FROM THE EAST
 HV8841'EDGE OF RUNWAY 16, 16.8 METERS (55 FT) EAST FROM THE FOURTH LIGHT
 HV8841'FROM THE NORTH END OF THE RUNWAY, 6.7 METERS (22.1 FT) NORTHEAST
 HV8841'FROM THE NORTHEAST LEG OF A ORANGE BOX WHICH CONTAINS RUNWAY LIGHTS
 HV8841'AND 0.6 METERS (2.0 FT) SOUTHWEST FROM A CARSONITE WITNESS POST.
 HV8841
 HV8841                          STATION RECOVERY (1986)
 HV8841
 HV8841'RECOVERED 1986
 HV8841'RECOVERED IN GOOD CONDITION.
 HV8841
 HV8841                          STATION RECOVERY (1996)
 HV8841
 HV8841'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 HV8841'RECOVERED AS DESCRIBED WITH THE FOLLOWING ADDITIONS.  CONTACT MR. SNAP
 HV8841'JOHNSON, AIRPORT MANAGER (410) 228-4571, 5223 BUCKTOWN RD, CAMBRIDGE,
 HV8841'MD 21613 FOR PERMISSION TO ACCESS MARK.  STATION IS AIRPORT SACS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5878 ***********************************************************************
 HV5878  DESIGNATION -  CAMBRIDGE CHRISTS CHURCH SPIRE
 HV5878  PID         -  HV5878
 HV5878  STATE/COUNTY-  MD/DORCHESTER
 HV5878  COUNTRY     -  US
 HV5878  USGS QUAD   -  CAMBRIDGE (2016)
 HV5878
 HV5878                         *CURRENT SURVEY CONTROL
 HV5878  ______________________________________________________________________
 HV5878* NAD 83(1991) POSITION- 38 34 19.86061(N) 076 04 35.50123(W)   ADJUSTED
 HV5878  ______________________________________________________________________
 HV5878  GEOID HEIGHT    -        -35.029 (meters)                     GEOID18
 HV5878  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 HV5878  HORZ ORDER      -  THIRD
 HV5878
 HV5878.The horizontal coordinates were established by classical geodetic methods
 HV5878.and adjusted by the National Geodetic Survey in January 1992.
 HV5878
 HV5878.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5878.GEOID18 height accuracy estimate available here.
 HV5878
 HV5878.Click photographs - Photos may exist for this station.
 HV5878
 HV5878.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5878
 HV5878. The following values were computed from the NAD 83(1991) position.
 HV5878
 HV5878;                    North         East     Units Scale Factor Converg.
 HV5878;SPC MD       -   100,922.943   480,472.261   MT  0.99996381   +0 34 46.6
 HV5878;SPC MD       -   331,111.36  1,576,349.41   sFT  0.99996381   +0 34 46.6
 HV5878;UTM  18      - 4,269,852.410   406,221.555   MT  0.99970830   -0 40 16.6
 HV5878
 HV5878_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0622169852(NAD 83)
 HV5878
 HV5878                          SUPERSEDED SURVEY CONTROL
 HV5878
 HV5878  NAD 83(1986)-  38 34 19.85680(N)    076 04 35.51804(W) AD(       ) 3
 HV5878  NAD 27      -  38 34 19.43000(N)    076 04 36.73100(W) AD(       ) 3
 HV5878
 HV5878.Superseded values are not recommended for survey control.
 HV5878
 HV5878.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5878.See file dsdata.pdf to determine how the superseded data were derived.
 HV5878
 HV5878_MARKER: 90 = CHURCH SPIRE
 HV5878_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV5878+SATELLITE: SATELLITE OBSERVATIONS - March 23, 2009
 HV5878
 HV5878  HISTORY     - Date     Condition        Report By
 HV5878  HISTORY     - 1942     FIRST OBSERVED   CGS
 HV5878  HISTORY     - 1961     GOOD             CGS
 HV5878  HISTORY     - 20010207 GOOD             USPSQD
 HV5878  HISTORY     - 20050704 GOOD             USPSQD
 HV5878  HISTORY     - 20061118 GOOD             USPSQD
 HV5878  HISTORY     - 20090323 GOOD             GEOCAC
 HV5878
 HV5878                          STATION DESCRIPTION
 HV5878
 HV5878'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV5878'THIS INTERSECTION STATION IS LOCATED AT THE CORNER OF CHURCH AND
 HV5878'HIGH STREETS IN CAMBRIDGE.
 HV5878'
 HV5878'IT IS A GREEN STONE BUILDING WITH A SPIRE ABOUT 60 FEET HIGH ON
 HV5878'THE S END OF THE BUILDING.
 HV5878'
 HV5878'THE POINT OBSERVED ON WAS THE TIP OF THE SPIRE.
 HV5878
 HV5878                          STATION RECOVERY (1961)
 HV5878
 HV5878'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5878'STATION RECOVERED AS DESCRIBED.  THE PUBLISHED DESCRIPTION IS
 HV5878'ADEQUATE.
 HV5878
 HV5878                          STATION RECOVERY (2001)
 HV5878
 HV5878'RECOVERY NOTE BY US POWER SQUADRON 2001 (ELW)
 HV5878'RECOVERED IN GOOD CONDITION.
 HV5878
 HV5878                          STATION RECOVERY (2005)
 HV5878
 HV5878'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 HV5878'AS DESCRIBED
 HV5878
 HV5878                          STATION RECOVERY (2006)
 HV5878
 HV5878'RECOVERY NOTE BY US POWER SQUADRON 2006
 HV5878'RECOVERED IN GOOD CONDITION.
 HV5878
 HV5878                          STATION RECOVERY (2009)
 HV5878
 HV5878'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 HV5878'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5875 ***********************************************************************
 HV5875  DESIGNATION -  CAMBRIDGE GRACE METH CH SPIRE
 HV5875  PID         -  HV5875
 HV5875  STATE/COUNTY-  MD/DORCHESTER
 HV5875  COUNTRY     -  US
 HV5875  USGS QUAD   -  CAMBRIDGE (2016)
 HV5875
 HV5875                         *CURRENT SURVEY CONTROL
 HV5875  ______________________________________________________________________
 HV5875* NAD 83(1991) POSITION- 38 34 05.71530(N) 076 04 40.04241(W)   ADJUSTED
 HV5875  ______________________________________________________________________
 HV5875  GEOID HEIGHT    -        -35.034 (meters)                     GEOID18
 HV5875  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 HV5875  HORZ ORDER      -  THIRD
 HV5875
 HV5875.The horizontal coordinates were established by classical geodetic methods
 HV5875.and adjusted by the National Geodetic Survey in January 1992.
 HV5875
 HV5875.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5875.GEOID18 height accuracy estimate available here.
 HV5875
 HV5875.Click photographs - Photos may exist for this station.
 HV5875
 HV5875.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5875
 HV5875. The following values were computed from the NAD 83(1991) position.
 HV5875
 HV5875;                    North         East     Units Scale Factor Converg.
 HV5875;SPC MD       -   100,485.694   480,366.748   MT  0.99996417   +0 34 43.7
 HV5875;SPC MD       -   329,676.81  1,576,003.24   sFT  0.99996417   +0 34 43.7
 HV5875;UTM  18      - 4,269,417.679   406,106.551   MT  0.99970856   -0 40 19.2
 HV5875
 HV5875_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0610669417(NAD 83)
 HV5875
 HV5875                          SUPERSEDED SURVEY CONTROL
 HV5875
 HV5875  NAD 83(1986)-  38 34 05.71152(N)    076 04 40.05936(W) AD(       ) 3
 HV5875  NAD 27      -  38 34 05.28500(N)    076 04 41.27100(W) AD(       ) 3
 HV5875
 HV5875.Superseded values are not recommended for survey control.
 HV5875
 HV5875.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5875.See file dsdata.pdf to determine how the superseded data were derived.
 HV5875
 HV5875_MARKER: 90 = CHURCH SPIRE
 HV5875_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV5875+SATELLITE: SATELLITE OBSERVATIONS - March 23, 2009
 HV5875
 HV5875  HISTORY     - Date     Condition        Report By
 HV5875  HISTORY     - 1942     FIRST OBSERVED   CGS
 HV5875  HISTORY     - 1961     GOOD             CGS
 HV5875  HISTORY     - 20010207 GOOD             USPSQD
 HV5875  HISTORY     - 20010331 GOOD             NGS
 HV5875  HISTORY     - 20050704 GOOD             USPSQD
 HV5875  HISTORY     - 20061118 GOOD             USPSQD
 HV5875  HISTORY     - 20090323 GOOD             GEOCAC
 HV5875
 HV5875                          STATION DESCRIPTION
 HV5875
 HV5875'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV5875'THIS INTERSECTION STATION IS LOCATED ON THE CORNER OF RACE AND
 HV5875'MUIR STREETS IN CAMBRIDGE.
 HV5875'
 HV5875'IT IS A GRAY STONE BUILDING WITH A SPIRE ABOUT 60 FEET HIGH AT
 HV5875'THE NE CORNER OF THE BUILDING.
 HV5875'
 HV5875'THE POINT OBSERVED ON WAS THE TIP OF THE SPIRE.
 HV5875
 HV5875                          STATION RECOVERY (1961)
 HV5875
 HV5875'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5875'STATION RECOVERED AS DESCRIBED.  THE PUBLISHED DESCRIPTION IS
 HV5875'ADEQUATE.
 HV5875
 HV5875                          STATION RECOVERY (2001)
 HV5875
 HV5875'RECOVERY NOTE BY US POWER SQUADRON 2001 (ELW)
 HV5875'RECOVERED IN GOOD CONDITION.
 HV5875
 HV5875                          STATION RECOVERY (2001)
 HV5875
 HV5875'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV5875'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV5875
 HV5875                          STATION RECOVERY (2005)
 HV5875
 HV5875'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 HV5875'AS DESCRIBED
 HV5875
 HV5875                          STATION RECOVERY (2006)
 HV5875
 HV5875'RECOVERY NOTE BY US POWER SQUADRON 2006
 HV5875'RECOVERED IN GOOD CONDITION.
 HV5875
 HV5875                          STATION RECOVERY (2009)
 HV5875
 HV5875'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 HV5875'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5879 ***********************************************************************
 HV5879  DESIGNATION -  CAMBRIDGE MSFC 1909
 HV5879  PID         -  HV5879
 HV5879  STATE/COUNTY-  MD/DORCHESTER
 HV5879  COUNTRY     -  US
 HV5879  USGS QUAD   -  CAMBRIDGE (2016)
 HV5879
 HV5879                         *CURRENT SURVEY CONTROL
 HV5879  ______________________________________________________________________
 HV5879* NAD 83(1991) POSITION- 38 35 06.05439(N) 076 04 39.52858(W)   ADJUSTED
 HV5879* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5879  ______________________________________________________________________
 HV5879  GEOID HEIGHT    -        -35.004 (meters)                     GEOID18
 HV5879  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 HV5879  HORZ ORDER      -  THIRD
 HV5879
 HV5879.The horizontal coordinates were established by classical geodetic methods
 HV5879.and adjusted by the National Geodetic Survey in January 1992.
 HV5879
 HV5879.The orthometric height was scaled from a topographic map.
 HV5879
 HV5879.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5879.GEOID18 height accuracy estimate available here.
 HV5879
 HV5879.Click photographs - Photos may exist for this station.
 HV5879
 HV5879.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5879
 HV5879. The following values were computed from the NAD 83(1991) position.
 HV5879
 HV5879;                    North         East     Units Scale Factor Converg.
 HV5879;SPC MD       -   102,346.236   480,360.388   MT  0.99996265   +0 34 44.0
 HV5879;SPC MD       -   335,780.94  1,575,982.37   sFT  0.99996265   +0 34 44.0
 HV5879;UTM  18      - 4,271,277.443   406,140.802   MT  0.99970848   -0 40 19.7
 HV5879
 HV5879!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5879!SPC MD       -   1.00000553  x   0.99996265  =   0.99996818
 HV5879!UTM  18      -   1.00000553  x   0.99970848  =   0.99971401
 HV5879
 HV5879:                Primary Azimuth Mark                     Grid Az
 HV5879:SPC MD       -  COMMAND MSFC 1909                        309 04 44.6
 HV5879:UTM  18      -  COMMAND MSFC 1909                        310 19 48.3
 HV5879
 HV5879_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0614071277(NAD 83)
 HV5879
 HV5879|---------------------------------------------------------------------|
 HV5879| PID    Reference Object                     Distance      Geod. Az  |
 HV5879|                                                           dddmmss.s |
 HV5879| HV5872 COMMAND MSFC 1909                   APPROX. 1.4 KM 3093928.6 |
 HV5879| HV5884 HAMBROOK BAR BEACON                 APPROX. 1.2 KM 3455139.4 |
 HV5879|---------------------------------------------------------------------|
 HV5879
 HV5879                          SUPERSEDED SURVEY CONTROL
 HV5879
 HV5879  NAD 83(1986)-  38 35 06.05147(N)    076 04 39.54573(W) AD(       ) 3
 HV5879  NAD 27      -  38 35 05.60800(N)    076 04 40.76900(W) AD(       ) 3
 HV5879  USSD        -  38 35 06.00500(N)    076 04 40.57200(W) AD(       ) 3
 HV5879
 HV5879.Superseded values are not recommended for survey control.
 HV5879
 HV5879.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5879.See file dsdata.pdf to determine how the superseded data were derived.
 HV5879
 HV5879_MARKER: Z = SEE DESCRIPTION
 HV5879_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5879_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5879+STABILITY: SURFACE MOTION
 HV5879
 HV5879  HISTORY     - Date     Condition        Report By
 HV5879  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5879  HISTORY     - 1930     GOOD             MDDNR
 HV5879  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5879
 HV5879                          STATION DESCRIPTION
 HV5879
 HV5879'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5879'ON THE SOUTHERN SHORE OF CHOPTANK RIVER, 3/4 MILE SE OF HAMBROOKS
 HV5879'BAR BEACON, AND 1/2 MILE NW OF CAMBRIDGE (STEAMER) WHARF, ON A
 HV5879'MARSH POINT ABOUT 1 FOOT ABOVE HIGH WATER, 30 YARDS W OF SHORE, 35
 HV5879'YARDS S OF SHORE AT CUT, 40 YARDS SW OF SHORE, AND 3 YARDS SW OF
 HV5879'BARB-WIRE FENCE RUNNING NW AND SE.  STATION IS MARKED BY A HOLE IN
 HV5879'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5879'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5879'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5879'COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF
 HV5879'2-INCH TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF
 HV5879'THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV5879'REFERENCE ARE AS FOLLOWS--WEATHER VANE ON HOTEL, 1/2 MILE, S 5
 HV5879'DEG 15 MIN W.  CHIMNEY OF HOUSE, 3/4 MILE, N 82 DEG 18 MIN W.
 HV5879'FLAGPOLE, 3/4 MILE, N 56 DEG 12 MIN W. FLAGPOLE ON BOATHOUSE, 3/4
 HV5879'MILE, N 50 DEG 57 MIN W.  SW PEAK OF KIRBY WHARF HOUSE, 1-3/4
 HV5879'MILES, N 8 DEG 6 MIN E.  CHIMNEY OUTSIDE OF S END OF HOUSE, 1-7/8
 HV5879'MILES, N 56 DEG 39 MIN E.  NEAR ONE OF FOUR CHIMNEYS ON LARGE
 HV5879'SQUARE HOUSE, 2-1/4 MILES, N 83 DEG 5 MIN E.  RIGHT CHIMNEY OF
 HV5879'LARGE HOUSE ON CHANCELLORS POINT, 2-3/4 MILES, S 83 DEG 54 MIN E.
 HV5879
 HV5879                          STATION RECOVERY (1930)
 HV5879
 HV5879'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV5879'O.K. AND MARKED WITH TRIPOD.
 HV5879
 HV5879                          STATION RECOVERY (1961)
 HV5879
 HV5879'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5879'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  IT HAS EITHER BEEN
 HV5879'DESTROYED BY EROSION OR IS COVERED BY THE FILL WHICH HAS BEEN
 HV5879'PLACED UPON THE POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5880 ***********************************************************************
 HV5880  DESIGNATION -  CAMBRIDGE MUNICIPAL TANK
 HV5880  PID         -  HV5880
 HV5880  STATE/COUNTY-  MD/DORCHESTER
 HV5880  COUNTRY     -  US
 HV5880  USGS QUAD   -  CAMBRIDGE (2016)
 HV5880
 HV5880                         *CURRENT SURVEY CONTROL
 HV5880  ______________________________________________________________________
 HV5880* NAD 83(1991) POSITION- 38 34 00.70474(N) 076 04 11.91122(W)   ADJUSTED
 HV5880  ______________________________________________________________________
 HV5880  GEOID HEIGHT    -        -35.051 (meters)                     GEOID18
 HV5880  LAPLACE CORR    -         -3.32  (seconds)                    DEFLEC18
 HV5880  HORZ ORDER      -  THIRD
 HV5880
 HV5880.The horizontal coordinates were established by classical geodetic methods
 HV5880.and adjusted by the National Geodetic Survey in January 1992.
 HV5880
 HV5880.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5880.GEOID18 height accuracy estimate available here.
 HV5880
 HV5880.Click photographs - Photos may exist for this station.
 HV5880
 HV5880.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5880
 HV5880. The following values were computed from the NAD 83(1991) position.
 HV5880
 HV5880;                    North         East     Units Scale Factor Converg.
 HV5880;SPC MD       -   100,338.114   481,049.275   MT  0.99996430   +0 35 01.4
 HV5880;SPC MD       -   329,192.63  1,578,242.50   sFT  0.99996430   +0 35 01.4
 HV5880;UTM  18      - 4,269,255.277   406,785.519   MT  0.99970700   -0 40 01.6
 HV5880
 HV5880_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0678569255(NAD 83)
 HV5880
 HV5880                          SUPERSEDED SURVEY CONTROL
 HV5880
 HV5880  NAD 83(1986)-  38 34 00.70143(N)    076 04 11.92831(W) AD(       ) 3
 HV5880  NAD 27      -  38 34 00.27500(N)    076 04 13.14000(W) AD(       ) 3
 HV5880
 HV5880.Superseded values are not recommended for survey control.
 HV5880
 HV5880.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5880.See file dsdata.pdf to determine how the superseded data were derived.
 HV5880
 HV5880_MARKER: 53 = ELEVATED TANK
 HV5880_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV5880+SATELLITE: SATELLITE OBSERVATIONS - August 06, 2007
 HV5880
 HV5880  HISTORY     - Date     Condition        Report By
 HV5880  HISTORY     - 1942     FIRST OBSERVED   CGS
 HV5880  HISTORY     - 1961     GOOD             CGS
 HV5880  HISTORY     - 1973     GOOD             NGS
 HV5880  HISTORY     - 20010207 GOOD             USPSQD
 HV5880  HISTORY     - 20060521 GOOD             GEOCAC
 HV5880  HISTORY     - 20070806 GOOD             GEOCAC
 HV5880
 HV5880                          STATION DESCRIPTION
 HV5880
 HV5880'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV5880'THIS INTERSECTION STATION IS LOCATED 0.05 MILE SW OF THE
 HV5880'INTERSECTION OF GREEN AND HAYWARD STREETS IN CAMBRIDGE.
 HV5880'
 HV5880'IT IS A ROUND BOWL STEEL TANK ATOP A FOUR-LEGGED STEEL STRUCTURE,
 HV5880'OVERALL HEIGHT ABOUT 90 FEET, AND PAINTED ALUMINUM COLOR.
 HV5880'
 HV5880'THE POINT OBSERVED ON WAS THE BALL AT THE APEX OF THE ROOF OF THE
 HV5880'TANK.
 HV5880
 HV5880                          STATION RECOVERY (1961)
 HV5880
 HV5880'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5880'TANK RECOVERED IN GOOD CONDITION.  THE PUBLISHED DESCRIPTION IS
 HV5880'ADEQUATE EXCEPT THAT THE TANK IS SUPPORTED BY TEN LEGS, NOT FOUR.
 HV5880
 HV5880                          STATION RECOVERY (1973)
 HV5880
 HV5880'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 HV5880'THIS STATION WAS NOT VISITED AT THIS DATE, HOWEVER ITS POSITION
 HV5880'WAS VERIFIED BY ANGLES.
 HV5880
 HV5880                          STATION RECOVERY (2001)
 HV5880
 HV5880'RECOVERY NOTE BY US POWER SQUADRON 2001 (ELW)
 HV5880'TANK IS IN EXCELLENT SHAPE - 10 LEGS
 HV5880
 HV5880                          STATION RECOVERY (2006)
 HV5880
 HV5880'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 HV5880'TOP HALF OF TANK IS PAINTED WHITE AND NOW SUPPORTS CELLULAR ANTENNA -
 HV5880'BOTTOM HALF AND LEGS ARE PAINTED LIGHT BLUE.
 HV5880
 HV5880                          STATION RECOVERY (2007)
 HV5880
 HV5880'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 HV5880'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2363 ***********************************************************************
 HU2363  DESIGNATION -  CAMDEN RESET
 HU2363  PID         -  HU2363
 HU2363  STATE/COUNTY-  MD/WICOMICO
 HU2363  COUNTRY     -  US
 HU2363  USGS QUAD   -  SALISBURY (2016)
 HU2363
 HU2363                         *CURRENT SURVEY CONTROL
 HU2363  ______________________________________________________________________
 HU2363* NAD 83(1991) POSITION- 38 21 56.49847(N) 075 35 41.52810(W)   ADJUSTED
 HU2363* NAVD 88 ORTHO HEIGHT -     6.846 (meters)       22.46  (feet) ADJUSTED
 HU2363  ______________________________________________________________________
 HU2363  GEOID HEIGHT    -        -35.821 (meters)                     GEOID18
 HU2363  LAPLACE CORR    -         -1.27  (seconds)                    DEFLEC18
 HU2363  DYNAMIC HEIGHT  -          6.842 (meters)       22.45  (feet) COMP
 HU2363  MODELED GRAVITY -    980,005.5   (mgal)                       NAVD 88
 HU2363
 HU2363  HORZ ORDER      -  THIRD
 HU2363  VERT ORDER      -  SECOND    CLASS I
 HU2363
 HU2363.The horizontal coordinates were established by classical geodetic methods
 HU2363.and adjusted by the National Geodetic Survey in January 1992.
 HU2363
 HU2363.The orthometric height was determined by differential leveling and
 HU2363.adjusted by the NATIONAL GEODETIC SURVEY
 HU2363.in June 1991.
 HU2363
 HU2363.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2363.GEOID18 height accuracy estimate available here.
 HU2363
 HU2363.Click photographs - Photos may exist for this station.
 HU2363
 HU2363.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2363
 HU2363.The dynamic height is computed by dividing the NAVD 88
 HU2363.geopotential number by the normal gravity value computed on the
 HU2363.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2363.degrees latitude (g = 980.6199 gals.).
 HU2363
 HU2363.The modeled gravity was interpolated from observed gravity values.
 HU2363
 HU2363. The following values were computed from the NAD 83(1991) position.
 HU2363
 HU2363;                    North         East     Units Scale Factor Converg.
 HU2363;SPC MD       -    78,540.092   522,794.567   MT  0.99998922   +0 52 54.9
 HU2363;SPC MD       -   257,676.95  1,715,201.84   sFT  0.99998922   +0 52 54.9
 HU2363;UTM  18      - 4,246,558.244   448,032.302   MT  0.99963326   -0 22 09.2
 HU2363
 HU2363!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2363!SPC MD       -   1.00000455  x   0.99998922  =   0.99999377
 HU2363!UTM  18      -   1.00000455  x   0.99963326  =   0.99963780
 HU2363
 HU2363:                Primary Azimuth Mark                     Grid Az
 HU2363:SPC MD       -  SALISBURY COURTHOUSE SPIRE               270 47 37.6
 HU2363:UTM  18      -  SALISBURY COURTHOUSE SPIRE               272 02 41.7
 HU2363
 HU2363_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4803246558(NAD 83)
 HU2363
 HU2363|---------------------------------------------------------------------|
 HU2363| PID    Reference Object                     Distance      Geod. Az  |
 HU2363|                                                           dddmmss.s |
 HU2363| HU1242 SALISBURY WCPB TV MAST              APPROX. 2.2 KM 0091010.4 |
 HU2363| HU1234 CAMDEN RM 3                           4.241 METERS 06040     |
 HU2363| HU0454 CAMDEN RM 1                          29.353 METERS 06317     |
 HU2363| HU1757 SALISBURY SOUTH MUNICIPAL TANK      APPROX. 2.0 KM 1964349.3 |
 HU2363| HU2738 HUB                                 277.594 METERS 19745     |
 HU2363| HU1764 SALISBURY COURTHOUSE SPIRE          454.884 METERS 2714032.5 |
 HU2363| HU0452 WICOMICO RM 2                        21.208 METERS 32917     |
 HU2363| HU1780 SALISBURY WATER TANK                325.005 METERS 35158     |
 HU2363|---------------------------------------------------------------------|
 HU2363
 HU2363                          SUPERSEDED SURVEY CONTROL
 HU2363
 HU2363  NAD 83(1991)-  38 21 56.49064(N)    075 35 41.55388(W) AD(       ) 3
 HU2363  NAD 27      -  38 21 56.07600(N)    075 35 42.82000(W) AD(       ) 3
 HU2363  NGVD 29 (11/18/05)    7.09   (m)           23.3    (f) RESET       3  
 HU2363  NGVD 29 (06/12/91)    7.102  (m)           23.30   (f) ADJUSTED    2 1
 HU2363
 HU2363.Superseded values are not recommended for survey control.
 HU2363
 HU2363.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2363.See file dsdata.pdf to determine how the superseded data were derived.
 HU2363
 HU2363_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2363_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2363_STAMPING: CAMDEN 1956 1985
 HU2363_MARK LOGO: NGS
 HU2363_PROJECTION: RECESSED 9 CENTIMETERS
 HU2363_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2363_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2363+STABILITY: SURFACE MOTION
 HU2363_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2363+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2017
 HU2363
 HU2363  HISTORY     - Date     Condition        Report By
 HU2363  HISTORY     - 1985     MONUMENTED       NGS
 HU2363  HISTORY     - 19891206 GOOD             NGS
 HU2363  HISTORY     - 19901221 GOOD             MDSHA
 HU2363  HISTORY     - 19971018 GOOD             USPSQD
 HU2363  HISTORY     - 20050907 GOOD             GEOCAC
 HU2363  HISTORY     - 20170330 GOOD             PROFLN
 HU2363
 HU2363                          STATION DESCRIPTION
 HU2363
 HU2363'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 HU2363'THE STATION SURFACE MARK WAS FOUND DESTROYED.  THE STATION UNDERGROUND
 HU2363'MARK, REFERENCE MARK ONE, AND REFERENCE MARK TWO WERE RECOVERED AND
 HU2363'FOUND IN GOOD CONDITION.  THE STATION UNDERGROUND MARK WAS LOWERED
 HU2363'AND A NEW STATION SURFACE MARK SET DIRECTLY OVER IT.
 HU2363'A NEW REFERENCE MARK THREE WAS ESTABLISHED AT THIS DATE.  A DIFFERENCE
 HU2363'IN DIRECTION OF 4 MINUTES 01 SECONDS AND A SHORTER DISTANCE OF 0.18
 HU2363'METERS (0.59 FT) WAS NOTED AND VERIFIED TO REFERENCE MARK ONE.  THE
 HU2363'DIRECTION TO REFERENCE MARK TWO WAS WITHIN CLOSE AGREEMENT WITH THE
 HU2363'ORIGINAL DESCRIPTION.  A LONGER DISTANCE OF 0.019 METERS (0.06 FT)
 HU2363'NOTED AND VERIFIED TO REFERENCE MARK TWO.
 HU2363'
 HU2363'A COMPLETE NEW DESCRIPTION OF THIS STATION FOLLOWS.
 HU2363'
 HU2363'THE STATION IS LOCATED ABOUT 0.5 KM (0.3 MI) EAST FROM THE
 HU2363'APPROXIMATE CENTER OF SALISBURY AT THE EAST MAIN STREET RAILROAD
 HU2363'OVERPASS.  --RAILROAD RIGHT-OF-WAY--.
 HU2363'
 HU2363'TO REACH THE STATION FROM THE INTERSECTION OF US HIGHWAY 50 AND 13
 HU2363'BUSINESS AT SALISBURY, GO SOUTH ON US HIGHWAY 13 BUSINESS ROUTE FOR
 HU2363'0.2 KM (0.15 MI) TO A CROSSROADS, A RAILROAD OVERPASS, AND THE
 HU2363'STATION ON THE LEFT.
 HU2363'
 HU2363'THE STATION IS A STANDARD NATIONAL GEODETIC SURVEY DISK STAMPED
 HU2363'---CAMDEN 1956 1985--- SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 HU2363'30 CM (12 INCHES) IN DIAMETER RECESSED 10 CM (4 INCHES) BELOW THE
 HU2363'GROUND LOCATED 3.6 METERS (11.7 FEET) E FROM THE EAST RAIL OF THE
 HU2363'RAILROAD, 3.2 METERS (10.5 FEET) N FROM A POWERLINE POLE, 2.5
 HU2363'METERS (8.2 FEET) S FROM THE SOUTH FACE OF A CONCRETE RETAINING
 HU2363'WALL, 31.9 METERS (104.8 FEET) SE FROM AN IRON SIGNPOST WITH
 HU2363'ELECTRIC METER, AND, 3.0 METERS (10.0 FEET) N FROM A WITNESS POST,
 HU2363'AND 3.0 METERS (10.0 FEET) N FROM A WITNESS POST.
 HU2363'
 HU2363'THE UNDERGROUND MARK IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2363'STAMPED ---CAMDEN 1956 1985--- SET INTO AN IRREGULAR MASS OF CONCRETE
 HU2363'1.2 METERS (3.8 FEET) BELOW THE SURFACE.
 HU2363'
 HU2363'REFERENCE MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HU2363'NOS) DISK STAMPED ---CAMDEN NO 1 1956--- SET INTO THE TOP OF A ROUND
 HU2363'CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND
 HU2363'LOCATED 7.4 METERS (24.2 FEET) N FROM THE CENTERLINE OF MAIN STREET,
 HU2363'12.4 METERS (40.6 FEET) ESE FROM A STREET LIGHT POLE NUMBERED
 HU2363'46988-93157, 16.9 METERS (55.5 FEET) E FROM THE NORTH-SOUTH WALL OF
 HU2363'THE OVERPASS, 23.6 METERS (77.5 FEET) N FROM A CONCRETE BLOCK AND
 HU2363'BRICK BUILDING, AND 4.7 METERS (15.6 FEET) LOWER THAN THE STATION.
 HU2363'
 HU2363'REFERENCE MARK NO. 2 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HU2363'NOS) DISK STAMPED ---WICOMICO 1932 NO 2--- SET IN A DRILL HOLE IN A
 HU2363'CONCRETE RETAINING WALL AT THE NORTHWEST CORNER OF THE OVERPASS.
 HU2363'LOCATED 10.3 METERS (33.8 FEET) W FROM THE WEST RAIL OF THE
 HU2363'RAILROAD, 13.7 METERS (45.0 FEET) SSW FROM THE SIGN POST WITH
 HU2363'ELECTRIC METER, 0.2 METER (0.8 FOOT) E FROM THE WEST FACE OF THE
 HU2363'WALL, 0.3 METER (1.0 FOOT) W FROM THE SOUTH FACE OF THE WALL, AND
 HU2363'0.6 METER (2.0 FEET) HIGHER THAN THE STATION.
 HU2363'
 HU2363'REFERENCE MARK NO. 3 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2363'STAMPED ---CAMDEN 1956 NO 3 1985--- SET IN A DRILL HOLE IN A CONCRETE
 HU2363'RETAINING WALL AT THE SOUTHEAST CORNER OF THE OVERPASS. LOCATED 6.6
 HU2363'METERS (21.5 FEET) E FROM THE EAST RAIL OF THE RAILROAD, 0.2 METER
 HU2363'(0.8 FOOT) SE FROM AN IRON RAILING, 0.2 METER (0.5 FOOT) N FROM THE
 HU2363'SOUTH FACE OF THE WALL, 0.2 METER (0.5 FOOT) W FROM THE EAST FACE OF
 HU2363'THE WALL, AND 0.6 METER (2.0 FEET) HIGHER THAN THE STATION.
 HU2363'
 HU2363'DESCRIBED BY M. R. ARCHER-SHEE.
 HU2363
 HU2363                          STATION RECOVERY (1989)
 HU2363
 HU2363'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU2363'IN SALISBURY, AT THE INTERSECTION OF THE CONRAIL RAILROAD AND MAIN
 HU2363'STREET, 9.5 M (31.17 FT) SOUTH OF THE CENTERLINE OF THE STREET, 4.2 M
 HU2363'(13.78 FT) SOUTHWEST OF THE SOUTH ABUTMENT OF THE RAILROAD OVERPASS
 HU2363'OF THE STREET, 3.5 M (11.48 FT) EAST OF THE NEAR RAIL, 3.2 M
 HU2363'(10.50 FT) NORTH OF A UTILITY POLE, 0.6 M (1.97 FT) BELOW THE LEVEL
 HU2363'OF THE TRACK, AND IN A CONCRETE MONUMENT THAT IS 0.1 M (0.33 FT)
 HU2363'BELOW THE GROUND SURFACE.
 HU2363
 HU2363                          STATION RECOVERY (1990)
 HU2363
 HU2363'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HU2363'RECOVERED IN GOOD CONDITION.
 HU2363
 HU2363                          STATION RECOVERY (1997)
 HU2363
 HU2363'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU2363'RECOVERED IN GOOD CONDITION.
 HU2363
 HU2363                          STATION RECOVERY (2005)
 HU2363
 HU2363'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU2363'RECOVERED IN GOOD CONDITION.
 HU2363
 HU2363                          STATION RECOVERY (2017)
 HU2363
 HU2363'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2363'RECOVERED AS DESCRIBED.
 HU2363'
 HU2363'REFERENCE MARK 1 GOOD WITH SIDEWALK POURED FLUSH AROUND IT.
 HU2363'
 HU2363'REFERENCE MARKS 2 AND 3 ALSO GOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0454 ***********************************************************************
 HU0454  DESIGNATION -  CAMDEN RM 1
 HU0454  PID         -  HU0454
 HU0454  STATE/COUNTY-  MD/WICOMICO
 HU0454  COUNTRY     -  US
 HU0454  USGS QUAD   -  SALISBURY (2016)
 HU0454
 HU0454                         *CURRENT SURVEY CONTROL
 HU0454  ______________________________________________________________________
 HU0454* NAD 83(1991) POSITION- 38 21 56.92650(N) 075 35 40.44811(W)   ADJUSTED
 HU0454* NAVD 88 ORTHO HEIGHT -     2.088 (meters)        6.85  (feet) ADJUSTED
 HU0454  ______________________________________________________________________
 HU0454  GEOID HEIGHT    -        -35.821 (meters)                     GEOID18
 HU0454  LAPLACE CORR    -         -1.27  (seconds)                    DEFLEC18
 HU0454  DYNAMIC HEIGHT  -          2.087 (meters)        6.85  (feet) COMP
 HU0454  MODELED GRAVITY -    980,005.4   (mgal)                       NAVD 88
 HU0454
 HU0454  HORZ ORDER      -  SECOND
 HU0454  VERT ORDER      -  FIRST     CLASS I
 HU0454
 HU0454.The horizontal coordinates were established by classical geodetic methods
 HU0454.and adjusted by the National Geodetic Survey in January 1992.
 HU0454
 HU0454.The orthometric height was determined by differential leveling and
 HU0454.adjusted by the NATIONAL GEODETIC SURVEY
 HU0454.in June 1991.
 HU0454
 HU0454.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0454.GEOID18 height accuracy estimate available here.
 HU0454
 HU0454.Click photographs - Photos may exist for this station.
 HU0454
 HU0454.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0454
 HU0454.The dynamic height is computed by dividing the NAVD 88
 HU0454.geopotential number by the normal gravity value computed on the
 HU0454.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0454.degrees latitude (g = 980.6199 gals.).
 HU0454
 HU0454.The modeled gravity was interpolated from observed gravity values.
 HU0454
 HU0454. The following values were computed from the NAD 83(1991) position.
 HU0454
 HU0454;                    North         East     Units Scale Factor Converg.
 HU0454;SPC MD       -    78,553.692   522,820.579   MT  0.99998920   +0 52 55.5
 HU0454;SPC MD       -   257,721.57  1,715,287.18   sFT  0.99998920   +0 52 55.5
 HU0454;UTM  18      - 4,246,571.269   448,058.595   MT  0.99963322   -0 22 08.6
 HU0454
 HU0454!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0454!SPC MD       -   1.00000529  x   0.99998920  =   0.99999449
 HU0454!UTM  18      -   1.00000529  x   0.99963322  =   0.99963851
 HU0454
 HU0454:                Primary Azimuth Mark                     Grid Az
 HU0454:SPC MD       -  WICOMICO                                 262 14 53.2
 HU0454:UTM  18      -  WICOMICO                                 263 29 57.3
 HU0454
 HU0454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4805846571(NAD 83)
 HU0454
 HU0454|---------------------------------------------------------------------|
 HU0454| PID    Reference Object                     Distance      Geod. Az  |
 HU0454|                                                           dddmmss.s |
 HU0454| HU2363 CAMDEN RESET                         29.353 METERS 24317     |
 HU0454| HU1761 WICOMICO                            APPROX. 0.5 KM 2630748.7 |
 HU0454| HU1764 SALISBURY COURTHOUSE SPIRE          480.907 METERS 2700045.2 |
 HU0454| HU1780 SALISBURY WATER TANK                316.824 METERS 34656     |
 HU0454|---------------------------------------------------------------------|
 HU0454
 HU0454                          SUPERSEDED SURVEY CONTROL
 HU0454
 HU0454  NAD 83(1986)-  38 21 56.92028(N)    075 35 40.46670(W) AD(       ) 2
 HU0454  NAD 27      -  38 21 56.50200(N)    075 35 41.74100(W) AD(       ) 2
 HU0454  NGVD 29               2.34   (m)            7.7    (f) LEVELING    3  
 HU0454  NGVD 29 (11/26/84)    2.343  (m)            7.69   (f) ADJUSTED    1 1
 HU0454
 HU0454.Superseded values are not recommended for survey control.
 HU0454
 HU0454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0454.See file dsdata.pdf to determine how the superseded data were derived.
 HU0454
 HU0454_MARKER: DR = REFERENCE MARK DISK
 HU0454_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0454_STAMPING: CAMDEN NO 1 1956
 HU0454_MARK LOGO: CGS
 HU0454_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0454+STABILITY: SURFACE MOTION
 HU0454_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0454+SATELLITE: SATELLITE OBSERVATIONS - September 07, 2005
 HU0454
 HU0454  HISTORY     - Date     Condition        Report By
 HU0454  HISTORY     - 1956     MONUMENTED       CGS
 HU0454  HISTORY     - 1971     GOOD             NGS
 HU0454  HISTORY     - 19901221 GOOD             MDSHA
 HU0454  HISTORY     - 20050907 GOOD             GEOCAC
 HU0454
 HU0454                          STATION DESCRIPTION
 HU0454
 HU0454'DESCRIBED BY COAST AND GEODETIC SURVEY 1956
 HU0454'THE STATION IS LOCATED IN THE CITY OF SALISBURY, AT THE SOUTH SIDE
 HU0454'OF THE PENNSYLVANIA RAILROAD OVERPASS AND ON LAND OWNED BY THE
 HU0454'RAILROAD.  IT IS ABOUT 100 YARDS SOUTHEAST OF THE JUNCTION OF
 HU0454'U.S. HIGHWAYS 13 AND 50, 75 FEET WEST OF THE PITTSBURGH PLATE
 HU0454'GLASS CO. BUILDING, 14 FEET SOUTHWEST OF THE SOUTHEAST EDGE OF A
 HU0454'CONCRETE ABUTMENT FORMING THE SOUTH SIDE OF THE OVERPASS, 11.4
 HU0454'FEET EAST OF THE EAST RAIL OF THE RAILROAD TRACKS AND 9.9 FEET
 HU0454'NORTH OF A TELEPHONE POLE.
 HU0454'
 HU0454'REFERENCE MARK 1 IS 56 FEET EAST OF THE EAST END OF THE OVERPASS,
 HU0454'24 FEET NORTH OF THE CENTER OF U.S. HIGHWAY 50, 11 FEET EAST OF A
 HU0454'LAMP POST AND 2 FEET SOUTH OF THE SOUTH EDGE OF A SIDEWALK.  THE
 HU0454'MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED CAMDEN NO
 HU0454'1 1956.
 HU0454
 HU0454                          STATION RECOVERY (1971)
 HU0454
 HU0454'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HU0454'AT SALISBURY.
 HU0454'AT SALISBURY, NEAR THE PENNSYLVANIA RAILROAD OVERPASS OVER MAIN
 HU0454'STREET, 55.6 FEET EAST OF THE EAST END OF THE BASE OF THE NORTH
 HU0454'CONCRETE ABUTMENT OF THE OVERPASS, 84.9 FEET SOUTHWEST OF THE
 HU0454'SOUTHWEST CORNER OF THE RED HEAD SERVICE STATION, 96.9 FEET NORTHEAST
 HU0454'OF THE STATION MARK DESCRIBED, 24 FEET NORTH OF THE CENTER LINE OF
 HU0454'MAIN STREET, 40.3 FEET EAST OF A METAL LIGHT POLE, 2 FEET NORTH
 HU0454'OF THE SOUTH EDGE OF A CONCRETE SIDEWALK, ABOUT 0.4 MILE SOUTHWEST
 HU0454'OF THE RAILROAD STATION, ABOUT 0.35 MILE EAST ALONG MAIN STREET
 HU0454'FROM THE COURTHOUSE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 HU0454'THE SIDEWALK AND SURROUNDED BY THE CONCRETE SIDEWALK.
 HU0454
 HU0454                          STATION RECOVERY (1990)
 HU0454
 HU0454'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HU0454'RECOVERED IN GOOD CONDITION.
 HU0454
 HU0454                          STATION RECOVERY (2005)
 HU0454
 HU0454'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0454'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1234 ***********************************************************************
 HU1234  DESIGNATION -  CAMDEN RM 3
 HU1234  PID         -  HU1234
 HU1234  STATE/COUNTY-  MD/WICOMICO
 HU1234  COUNTRY     -  US
 HU1234  USGS QUAD   -  SALISBURY (2016)
 HU1234
 HU1234                         *CURRENT SURVEY CONTROL
 HU1234  ______________________________________________________________________
 HU1234* NAD 83(1991) POSITION- 38 21 56.56587(N) 075 35 41.37580(W)   NO CHECK
 HU1234* NAVD 88 ORTHO HEIGHT -     7.42  (+/-2cm)       24.3   (feet) VERTCON3
 HU1234  ______________________________________________________________________
 HU1234  GEOID HEIGHT    -        -35.821 (meters)                     GEOID18
 HU1234  LAPLACE CORR    -         -1.27  (seconds)                    DEFLEC18
 HU1234  HORZ ORDER      -  SECOND
 HU1234  VERT ORDER      -  THIRD (See Below)
 HU1234
 HU1234.The horizontal coordinates were established by classical geodetic methods
 HU1234.and adjusted by the National Geodetic Survey in January 1992.
 HU1234
 HU1234.No horizontal observational check was made to the station.
 HU1234
 HU1234.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1234.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1234
 HU1234.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1234.GEOID18 height accuracy estimate available here.
 HU1234
 HU1234.The vertical order pertains to the NGVD 29 superseded value.
 HU1234
 HU1234.Click photographs - Photos may exist for this station.
 HU1234
 HU1234.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1234
 HU1234. The following values were computed from the NAD 83(1991) position.
 HU1234
 HU1234;                    North         East     Units Scale Factor Converg.
 HU1234;SPC MD       -    78,542.227   522,798.232   MT  0.99998922   +0 52 55.0
 HU1234;SPC MD       -   257,683.96  1,715,213.87   sFT  0.99998922   +0 52 55.0
 HU1234;UTM  18      - 4,246,560.298   448,036.011   MT  0.99963325   -0 22 09.1
 HU1234
 HU1234!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1234!SPC MD       -   1.00000446  x   0.99998922  =   0.99999368
 HU1234!UTM  18      -   1.00000446  x   0.99963325  =   0.99963770
 HU1234
 HU1234_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4803646560(NAD 83)
 HU1234
 HU1234                          SUPERSEDED SURVEY CONTROL
 HU1234
 HU1234  NAD 83(1986)-  38 21 56.55800(N)    075 35 41.40160(W) AD(       ) 2
 HU1234  NGVD 29 (11/18/05)    7.68   (m)           25.2    (f) RESET       3  
 HU1234  NGVD 29               7.68   (m)           25.2    (f) LEVELING    3  
 HU1234
 HU1234.Superseded values are not recommended for survey control.
 HU1234
 HU1234.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1234.See file dsdata.pdf to determine how the superseded data were derived.
 HU1234
 HU1234_MARKER: DR = REFERENCE MARK DISK
 HU1234_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU1234_SP_SET: ABUTMENT
 HU1234_STAMPING: CAMDEN 1956 NO 3 1985
 HU1234_MARK LOGO: NGS
 HU1234_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU1234_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU1234+SATELLITE: SATELLITE OBSERVATIONS - September 07, 2005
 HU1234
 HU1234  HISTORY     - Date     Condition        Report By
 HU1234  HISTORY     - 1985     MONUMENTED       NGS
 HU1234  HISTORY     - 1989     GOOD             NGS
 HU1234  HISTORY     - 19901221 GOOD             MDSHA
 HU1234  HISTORY     - 20050907 GOOD             GEOCAC
 HU1234
 HU1234                          STATION DESCRIPTION
 HU1234
 HU1234'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU1234'IN SALISBURY.
 HU1234'FROM THE INTERSECTION OF US HIGHWAY 50 AND 13 BUSINESS IN SALISBURY,
 HU1234'GO SOUTH ON US HIGHWAY 13 BUSINESS ROUTE FOR 0.2 KM (0.10 MI) TO A
 HU1234'CROSSROADS, A RAILROAD OVERPASS, AND THE MARK ON THE LEFT, 6.6 M
 HU1234'(21.7 FT) EAST FROM THE EAST RAIL OF THE RAILROAD, 0.2 M (0.7 FT)
 HU1234'SOUTHEAST FROM AN IRON RAILING, 0.2 M (0.7 FT) NORTH FROM THE SOUTH
 HU1234'FACE OF A CONCRETE RETAINING WALL, AND 0.2 M (0.7 FT) WEST FROM THE
 HU1234'EAST FACE OF THE WALL.
 HU1234'THE MARK IS ABOVE LEVEL WITH THE RAILROAD.
 HU1234
 HU1234                          STATION RECOVERY (1990)
 HU1234
 HU1234'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HU1234'RECOVERED IN GOOD CONDITION.
 HU1234
 HU1234                          STATION RECOVERY (2005)
 HU1234
 HU1234'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU1234'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4380 ***********************************************************************
 JV4380  DESIGNATION -  CAMOTOP
 JV4380  PID         -  JV4380
 JV4380  STATE/COUNTY-  MD/MONTGOMERY
 JV4380  COUNTRY     -  US
 JV4380  USGS QUAD   -  ROCKVILLE (2016)
 JV4380
 JV4380                         *CURRENT SURVEY CONTROL
 JV4380  ______________________________________________________________________
 JV4380* NAD 83(1993) POSITION- 39 00 52.92384(N) 077 12 18.74367(W)   ADJUSTED
 JV4380* NAVD 88 ORTHO HEIGHT -   118.2   (meters)      388.    (feet) VERTCON3
 JV4380  ______________________________________________________________________
 JV4380  GEOID HEIGHT    -        -31.722 (meters)                     GEOID18
 JV4380  LAPLACE CORR    -         -1.45  (seconds)                    DEFLEC18
 JV4380  HORZ ORDER      -  FIRST
 JV4380
 JV4380.The horizontal coordinates were established by classical geodetic methods
 JV4380.and adjusted by the National Geodetic Survey in November 1994.
 JV4380
 JV4380.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4380.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4380
 JV4380.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4380.GEOID18 height accuracy estimate available here.
 JV4380
 JV4380.Click photographs - Photos may exist for this station.
 JV4380
 JV4380.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4380
 JV4380. The following values were computed from the NAD 83(1993) position.
 JV4380
 JV4380;                    North         East     Units Scale Factor Converg.
 JV4380;SPC MD       -   149,658.153   382,228.226   MT  0.99995278   -0 07 43.7
 JV4380;SPC MD       -   491,003.46  1,254,027.10   sFT  0.99995278   -0 07 43.7
 JV4380;UTM  18      - 4,320,721.554   309,076.933   MT  1.00004886   -1 23 19.1
 JV4380
 JV4380!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4380!SPC MD       -   0.99998644  x   0.99995278  =   0.99993922
 JV4380!UTM  18      -   0.99998644  x   1.00004886  =   1.00003530
 JV4380
 JV4380:                Primary Azimuth Mark                     Grid Az
 JV4380:SPC MD       -  CAMPBELL                                 128 14 50.6
 JV4380:UTM  18      -  CAMPBELL                                 129 30 26.0
 JV4380
 JV4380_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0907620721(NAD 83)
 JV4380
 JV4380|---------------------------------------------------------------------|
 JV4380| PID    Reference Object                     Distance      Geod. Az  |
 JV4380|                                                           dddmmss.s |
 JV4380| JV4387 ROCKVILLE MONTGOMERY SQ TANK        APPROX. 5.7 KM 0280116.5 |
 JV4380| JV4349 POTOMAC RADIO STA WGMS NW MAST      APPROX. 3.7 KM 0523142.1 |
 JV4380| JV4365 POTOMAC RADIO STA WGMS SE MAST      APPROX. 4.0 KM 0540612.5 |
 JV4380| JV4371 POTOMAC SISTERS MERCY CATH SCH      APPROX. 1.7 KM 0682905.7 |
 JV4380| CK6752 CAMOTOP RM 1                         33.839 METERS 11214     |
 JV4380| JV4381 CAMPBELL                            APPROX. 2.5 KM 1280706.9 |
 JV4380| CK6753 CAMOTOP RM 2                         35.012 METERS 19131     |
 JV4380| JV4389 POTOMAC PRESB CH SPIRE              APPROX. 0.9 KM 3180507.1 |
 JV4380| JV4379 POTOMAC ST FRANCIS EPIS CH          354.657 METERS 33448     |
 JV4380|---------------------------------------------------------------------|
 JV4380
 JV4380                          SUPERSEDED SURVEY CONTROL
 JV4380
 JV4380  NAD 83(1991)-  39 00 52.92334(N)    077 12 18.74480(W) AD(       ) 1
 JV4380  NAD 83(1986)-  39 00 52.92327(N)    077 12 18.75453(W) AD(       ) 1
 JV4380  NAD 27      -  39 00 52.52961(N)    077 12 19.81665(W) AD(       ) 1
 JV4380  NGVD 29 (07/19/86)  118.4    (m)          388.     (f) VERT ANG       
 JV4380
 JV4380.Superseded values are not recommended for survey control.
 JV4380
 JV4380.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4380.See file dsdata.pdf to determine how the superseded data were derived.
 JV4380
 JV4380_MARKER: DS = TRIANGULATION STATION DISK
 JV4380_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4380_STAMPING: CAMOTOP 1969
 JV4380_MARK LOGO: CGS
 JV4380_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4380+STABILITY: SURFACE MOTION
 JV4380
 JV4380  HISTORY     - Date     Condition        Report By
 JV4380  HISTORY     - 1969     MONUMENTED       CGS
 JV4380  HISTORY     - 20060318 MARK NOT FOUND   GEOCAC
 JV4380
 JV4380                          STATION DESCRIPTION
 JV4380
 JV4380'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4380'THE STATION IS ABOUT 5-1/2 MILES SOUTHWEST OF ROCKVILLE AND 1/2 MILE
 JV4380'SOUTHEAST OF POTOMAC, ON PROPERTY OF MORAN ENTERPRISES
 JV4380'INCORPORATION.
 JV4380'
 JV4380'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 190 AND 189
 JV4380'IN POTOMAC, GO SOUTHEAST ON HIGHWAY 190 FOR 0.3 MILE TO THE JUNCTION
 JV4380'WITH ACCORD DRIVE ON THE RIGHT.  TURN RIGHT AND GO SOUTH FOR 120
 JV4380'FEET TO A DRIVEWAY ON THE RIGHT.  TURN RIGHT AND GO WEST ON DRIVEWAY
 JV4380'FOR 100 FEET TO THE TOP OF HILL AND A GATE ON THE LEFT.  TURN
 JV4380'LEFT, PASSING THROUGH GATE, THEN RIGHT AND GO WEST FOR 100
 JV4380'FEET TO THE STATION.
 JV4380'
 JV4380'STATION MARK IS A STANDARD DISK, STAMPED CAMOTOP 1969, SET IN THE TOP
 JV4380'OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS FLUSH WITH
 JV4380'THE GROUND SURFACE.  IT IS 118.0 FEET SOUTHWEST OF THE WEST CORNER
 JV4380'OF A STONE HOUSE, 116.0 FEET NORTH OF A FENCE 58.0 FEET WEST OF THE
 JV4380'NORTHWEST CORNER OF A STONE GARAGE.  THE UNDERGROUND MARK IS 42
 JV4380'INCHES BELOW THE GROUND SURFACE.
 JV4380'
 JV4380'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CAMOTOP NO 1 1969, SET
 JV4380'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 JV4380'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 53.0 FEET
 JV4380'SOUTH-SOUTHEAST OF THE SOUTHWEST CORNER OF THE STONE GARAGE, 39.0
 JV4380'FEET SOUTHWEST OF THE CENTERLINE OF DRIVEWAY, 2.0 FEET SOUTHWEST
 JV4380'OF THE WEST CORNER OF AN OLD BARN AND ABOUT THE SAME ELEVATION AS
 JV4380'THE STATION.
 JV4380'
 JV4380'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CAMOTOP NO 2 1969, SET
 JV4380'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 JV4380'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 3 FEET EAST OF THE
 JV4380'JUNCTION OF A VERTICAL BOARD FENCE AND A HORIZONTAL BOARD FENCE
 JV4380'AND ABOUT THE SAME ELEVATION AS THE STATION.
 JV4380'
 JV4380'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
 JV4380'
 JV4380'REFERENCE MARK 1 TO REFERENCE MARK 2 OBSTRUCTED.
 JV4380
 JV4380                          STATION RECOVERY (2006)
 JV4380
 JV4380'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JV4380'AREA HAS BEEN COMPLETELY REDEVELOPED AS A RESIDENTIAL SUBIDIVISION.
 JV4380'THE LOCATION SEEMS TO BE THE STREET KNOWN AS ACCORD COURT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4602 ***********************************************************************
 JV4602  DESIGNATION -  CAMP DETRICK NORTH WATER TANK
 JV4602  PID         -  JV4602
 JV4602  STATE/COUNTY-  MD/FREDERICK
 JV4602  COUNTRY     -  US
 JV4602  USGS QUAD   -  FREDERICK (2016)
 JV4602
 JV4602                         *CURRENT SURVEY CONTROL
 JV4602  ______________________________________________________________________
 JV4602* NAD 83(1993) POSITION- 39 26 24.73000(N) 077 25 39.65489(W)   ADJUSTED
 JV4602  ______________________________________________________________________
 JV4602  GEOID HEIGHT    -        -32.801 (meters)                     GEOID18
 JV4602  LAPLACE CORR    -          2.52  (seconds)                    DEFLEC18
 JV4602  HORZ ORDER      -  THIRD
 JV4602
 JV4602.The horizontal coordinates were established by classical geodetic methods
 JV4602.and adjusted by the National Geodetic Survey in November 1994.
 JV4602
 JV4602.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4602.GEOID18 height accuracy estimate available here.
 JV4602
 JV4602.Click photographs - Photos may exist for this station.
 JV4602
 JV4602.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4602
 JV4602. The following values were computed from the NAD 83(1993) position.
 JV4602
 JV4602;                    North         East     Units Scale Factor Converg.
 JV4602;SPC MD       -   196,962.176   363,182.312   MT  0.99999830   -0 16 06.3
 JV4602;SPC MD       -   646,200.07  1,191,540.64   sFT  0.99999830   -0 16 06.3
 JV4602;UTM  18      - 4,368,440.914   291,079.368   MT  1.00013743   -1 32 34.1
 JV4602
 JV4602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9107968440(NAD 83)
 JV4602
 JV4602                          SUPERSEDED SURVEY CONTROL
 JV4602
 JV4602  NAD 83(1991)-  39 26 24.72933(N)    077 25 39.65342(W) AD(       ) 3
 JV4602  NAD 83(1986)-  39 26 24.72957(N)    077 25 39.66367(W) AD(       ) 3
 JV4602  NAD 27      -  39 26 24.36900(N)    077 25 40.71900(W) AD(       ) 3
 JV4602
 JV4602.Superseded values are not recommended for survey control.
 JV4602
 JV4602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4602.See file dsdata.pdf to determine how the superseded data were derived.
 JV4602
 JV4602_MARKER: 53 = ELEVATED TANK
 JV4602_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4602+SATELLITE: SATELLITE OBSERVATIONS - November 02, 2003
 JV4602
 JV4602  HISTORY     - Date     Condition        Report By
 JV4602  HISTORY     - 1958     FIRST OBSERVED   CGS
 JV4602  HISTORY     - 19970808 GOOD             USPSQD
 JV4602  HISTORY     - 20031102 GOOD             USPSQD
 JV4602
 JV4602                          STATION DESCRIPTION
 JV4602
 JV4602'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4602'STATION IS LOCATED AT THE NORTH EDGE OF FREDERICK AND ABOUT
 JV4602'1/4 MILE NORTH OF THE ENTRANCE TO CAMP DETRICK.  THE TANK IS
 JV4602'ABOUT 170 FEET HIGH AND PAINTED RED AND WHITE.
 JV4602'
 JV4602'THE POINT INTERSECTED WAS THE BALL.
 JV4602
 JV4602                          STATION RECOVERY (1997)
 JV4602
 JV4602'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4602'RECOVERED IN GOOD CONDITION.
 JV4602
 JV4602                          STATION RECOVERY (2003)
 JV4602
 JV4602'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4602'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4597 ***********************************************************************
 JV4597  DESIGNATION -  CAMP DETRICK SOUTH WATER TANK
 JV4597  PID         -  JV4597
 JV4597  STATE/COUNTY-  MD/FREDERICK
 JV4597  COUNTRY     -  US
 JV4597  USGS QUAD   -  FREDERICK (2016)
 JV4597
 JV4597                         *CURRENT SURVEY CONTROL
 JV4597  ______________________________________________________________________
 JV4597* NAD 83(1993) POSITION- 39 26 02.98941(N) 077 25 40.84624(W)   ADJUSTED
 JV4597  ______________________________________________________________________
 JV4597  GEOID HEIGHT    -        -32.790 (meters)                     GEOID18
 JV4597  LAPLACE CORR    -          2.65  (seconds)                    DEFLEC18
 JV4597  HORZ ORDER      -  THIRD
 JV4597
 JV4597.The horizontal coordinates were established by classical geodetic methods
 JV4597.and adjusted by the National Geodetic Survey in November 1994.
 JV4597
 JV4597.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4597.GEOID18 height accuracy estimate available here.
 JV4597
 JV4597.Click photographs - Photos may exist for this station.
 JV4597
 JV4597.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4597
 JV4597. The following values were computed from the NAD 83(1993) position.
 JV4597
 JV4597;                    North         East     Units Scale Factor Converg.
 JV4597;SPC MD       -   196,291.840   363,150.680   MT  0.99999727   -0 16 07.1
 JV4597;SPC MD       -   644,000.81  1,191,436.86   sFT  0.99999727   -0 16 07.1
 JV4597;UTM  18      - 4,367,771.353   291,032.830   MT  1.00013767   -1 32 34.1
 JV4597
 JV4597_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9103267771(NAD 83)
 JV4597
 JV4597                          SUPERSEDED SURVEY CONTROL
 JV4597
 JV4597  NAD 83(1991)-  39 26 02.98868(N)    077 25 40.84484(W) AD(       ) 3
 JV4597  NAD 83(1986)-  39 26 02.98875(N)    077 25 40.85514(W) AD(       ) 3
 JV4597  NAD 27      -  39 26 02.62700(N)    077 25 41.91000(W) AD(       ) 3
 JV4597
 JV4597.Superseded values are not recommended for survey control.
 JV4597
 JV4597.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4597.See file dsdata.pdf to determine how the superseded data were derived.
 JV4597
 JV4597_MARKER: 53 = ELEVATED TANK
 JV4597_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4597+SATELLITE: SATELLITE OBSERVATIONS - November 02, 2003
 JV4597
 JV4597  HISTORY     - Date     Condition        Report By
 JV4597  HISTORY     - 1958     FIRST OBSERVED   CGS
 JV4597  HISTORY     - 1987     GOOD             NGS
 JV4597  HISTORY     - 19970808 GOOD             USPSQD
 JV4597  HISTORY     - 20031102 GOOD             USPSQD
 JV4597
 JV4597                          STATION DESCRIPTION
 JV4597
 JV4597'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4597'STATION IS LOCATED AT THE NORTH EDGE OF FREDERICK AND ABOUT 1
 JV4597'BLOCK WEST-SOUTHWEST OF THE ENTRANCE TO CAMP DETRICK.  THE TANK
 JV4597'IS ABOUT 170 FEET HIGH AND PAINTED RED AND WHITE.
 JV4597'
 JV4597'THE POINT INTERSECTED WAS THE BALL.
 JV4597
 JV4597                          STATION RECOVERY (1987)
 JV4597
 JV4597'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 JV4597'THE DESIGNATED MARK WAS RECOVERED AS PREVIOUSLY DESCRIBED.
 JV4597'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV4597
 JV4597                          STATION RECOVERY (1997)
 JV4597
 JV4597'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4597'RECOVERED IN GOOD CONDITION.
 JV4597
 JV4597                          STATION RECOVERY (2003)
 JV4597
 JV4597'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4597'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6209 ***********************************************************************
 DN6209  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6209  DESIGNATION -  CAMP MEETING
 DN6209  PID         -  DN6209
 DN6209  STATE/COUNTY-  MD/CECIL
 DN6209  COUNTRY     -  US
 DN6209  USGS QUAD   -  RISING SUN (2016)
 DN6209
 DN6209                         *CURRENT SURVEY CONTROL
 DN6209  ______________________________________________________________________
 DN6209* NAD 83(2011) POSITION- 39 38 08.58097(N) 076 04 26.95988(W)   ADJUSTED
 DN6209* NAD 83(2011) ELLIP HT-   106.929 (meters)        (06/27/12)   ADJUSTED
 DN6209* NAD 83(2011) EPOCH   -  2010.00
 DN6209* NAVD 88 ORTHO HEIGHT -   139.93  (meters)      459.1   (feet) GPS OBS
 DN6209  ______________________________________________________________________
 DN6209  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6209  GEOID HEIGHT    -        -32.981 (meters)                     GEOID03
 DN6209  GEOID HEIGHT    -        -33.006 (meters)                     GEOID18
 DN6209  NAD 83(2011) X  -  1,183,760.848 (meters)                     COMP
 DN6209  NAD 83(2011) Y  - -4,774,119.932 (meters)                     COMP
 DN6209  NAD 83(2011) Z  -  4,046,987.326 (meters)                     COMP
 DN6209  LAPLACE CORR    -         -1.69  (seconds)                    DEFLEC18
 DN6209
 DN6209  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6209  Standards:
 DN6209         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6209            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6209  -------------------------------------------------------------------
 DN6209  NETWORK    0.56   1.08           0.26   0.19   0.55      0.02561712
 DN6209  -------------------------------------------------------------------
 DN6209  Click here for local accuracies and other accuracy information.
 DN6209
 DN6209.The horizontal coordinates were established by GPS observations
 DN6209.and adjusted by the National Geodetic Survey in June 2012.
 DN6209
 DN6209.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6209.been affixed to the stable North American tectonic plate. See 
 DN6209.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6209
 DN6209.The horizontal coordinates are valid at the epoch date displayed above
 DN6209.which is a decimal equivalence of Year/Month/Day.
 DN6209
 DN6209.The orthometric height was determined by GPS observations and a
 DN6209.high-resolution geoid model using precise GPS observation and
 DN6209.processing techniques.
 DN6209
 DN6209.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6209.GEOID18 height accuracy estimate available here.
 DN6209
 DN6209.Click photographs - Photos may exist for this station.
 DN6209
 DN6209.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6209
 DN6209.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6209
 DN6209.The ellipsoidal height was determined by GPS observations
 DN6209.and is referenced to NAD 83.
 DN6209
 DN6209. The following values were computed from the NAD 83(2011) position.
 DN6209
 DN6209;                    North         East     Units Scale Factor Converg.
 DN6209;SPC MD       -   218,986.464   479,481.589   MT  1.00003777   +0 34 51.9
 DN6209;SPC MD       -   718,458.09  1,573,099.18   sFT  1.00003777   +0 34 51.9
 DN6209;UTM  18      - 4,387,877.844   407,824.022   MT  0.99970460   -0 41 06.9
 DN6209
 DN6209!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6209!SPC MD       -   0.99998322  x   1.00003777  =   1.00002099
 DN6209!UTM  18      -   0.99998322  x   0.99970460  =   0.99968783
 DN6209
 DN6209_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0782487877(NAD 83)
 DN6209
 DN6209                          SUPERSEDED SURVEY CONTROL
 DN6209
 DN6209  NAD 83(2007)-  39 38 08.58098(N)    076 04 26.96077(W) AD(2002.00) 1
 DN6209  ELLIP H (02/23/12)  106.958  (m)                       GP(2002.00) 4 1
 DN6209
 DN6209.Superseded values are not recommended for survey control.
 DN6209
 DN6209.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6209.See file dsdata.pdf to determine how the superseded data were derived.
 DN6209
 DN6209_MARKER: DD = SURVEY DISK
 DN6209_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6209_STAMPING: CAMP MEETING 2008
 DN6209_MARK LOGO: MD-015
 DN6209_PROJECTION: FLUSH
 DN6209_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6209_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6209+STABILITY: SURFACE MOTION
 DN6209_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6209+SATELLITE: SATELLITE OBSERVATIONS - April 06, 2014
 DN6209
 DN6209  HISTORY     - Date     Condition        Report By
 DN6209  HISTORY     - 20081204 MONUMENTED       GWS
 DN6209  HISTORY     - 20121128 GOOD             NGS
 DN6209  HISTORY     - 20140406 GOOD             GPSSS
 DN6209
 DN6209                          STATION DESCRIPTION
 DN6209
 DN6209'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6209'THE STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) NORTH OF HAVRE DE GRACE,
 DN6209'6.0 MI (9.7 KM) WEST OF BAY VIEW AND 4.3 MI (6.9 KM) SOUTH OF RISING
 DN6209'SUN.
 DN6209'
 DN6209'TO REACH THE STATION FROM THE JUNCTION OF JACOB TOME MEMORIAL HIGHWAY
 DN6209'(MD ROUTE 276) AND PERRYLAWN DRIVE (MD ROUTE 275), PROCEED NORTHEAST
 DN6209'ON MD 276 FOR 0.85 MI (1.4 KM) TO THE STATION ON THE RIGHT IN THE
 DN6209'SOUTH ANGLE OF THE ROAD'S INTERSECTION WITH FIRETOWER AND CAMP MEETING
 DN6209'ROADS.
 DN6209'
 DN6209'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6209'CONCRETE MONUMENT, 23 FT (7.0 M) SOUTHEAST OF THE FACE OF A CURB ON
 DN6209'THE SOUTHEAST ANGLE OF THE INTERSECTION, 31.5 FT (9.6 M) FROM A ROAD
 DN6209'SIGN AND 71.2 FT (21.7 M) EAST OF THE NORTHWEST END OF A GUARDRAIL ON
 DN6209'THE SOUTHWEST SIDE OF CAMP MEETING GROUND ROAD.
 DN6209
 DN6209                          STATION RECOVERY (2012)
 DN6209
 DN6209'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (DRD)
 DN6209'RECOVERED IN GOOD CONDITION.
 DN6209
 DN6209                          STATION RECOVERY (2014)
 DN6209
 DN6209'RECOVERY NOTE BY GPS SALES AND SERVICES 2014 (FP)
 DN6209'RECOVERED BY FARON PYLES, PLS OF NORTHERN BAY LAND PLANNING,
 DN6209'ENGINEERING AND SURVEYING CORP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7603 ***********************************************************************
 HV7603  DESIGNATION -  CAMP SPRINGS ALLENTOWN RD TANK
 HV7603  PID         -  HV7603
 HV7603  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7603  COUNTRY     -  US
 HV7603  USGS QUAD   -  ANACOSTIA (2016)
 HV7603
 HV7603                         *CURRENT SURVEY CONTROL
 HV7603  ______________________________________________________________________
 HV7603* NAD 83(1993) POSITION- 38 47 33.38152(N) 076 55 07.62110(W)   ADJUSTED
 HV7603  ______________________________________________________________________
 HV7603  GEOID HEIGHT    -        -32.470 (meters)                     GEOID18
 HV7603  LAPLACE CORR    -         -4.39  (seconds)                    DEFLEC18
 HV7603  HORZ ORDER      -  THIRD
 HV7603
 HV7603.The horizontal coordinates were established by classical geodetic methods
 HV7603.and adjusted by the National Geodetic Survey in November 1994.
 HV7603
 HV7603.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7603.GEOID18 height accuracy estimate available here.
 HV7603
 HV7603.Click photographs - Photos may exist for this station.
 HV7603
 HV7603.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7603
 HV7603. The following values were computed from the NAD 83(1993) position.
 HV7603
 HV7603;                    North         East     Units Scale Factor Converg.
 HV7603;SPC MD       -   124,986.950   407,055.626   MT  0.99995090   +0 03 03.5
 HV7603;SPC MD       -   410,061.35  1,335,481.67   sFT  0.99995090   +0 03 03.5
 HV7603;UTM  18      - 4,295,510.776   333,358.440   MT  0.99994196   -1 12 08.6
 HV7603
 HV7603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3335895510(NAD 83)
 HV7603
 HV7603                          SUPERSEDED SURVEY CONTROL
 HV7603
 HV7603  NAD 83(1991)-  38 47 33.38068(N)    076 55 07.62157(W) AD(       ) 3
 HV7603  NAD 83(1986)-  38 47 33.37995(N)    076 55 07.63440(W) AD(       ) 3
 HV7603  NAD 27      -  38 47 32.97028(N)    076 55 08.73010(W) AD(       ) 3
 HV7603
 HV7603.Superseded values are not recommended for survey control.
 HV7603
 HV7603.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7603.See file dsdata.pdf to determine how the superseded data were derived.
 HV7603
 HV7603_MARKER: 53 = ELEVATED TANK
 HV7603
 HV7603  HISTORY     - Date     Condition        Report By
 HV7603  HISTORY     - 1958     FIRST OBSERVED   CGS
 HV7603  HISTORY     - 1970     GOOD             NGS
 HV7603  HISTORY     - 20051126 GOOD             GEOCAC
 HV7603
 HV7603                          STATION DESCRIPTION
 HV7603
 HV7603'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7603'THE STATION IS LOCATED ABOUT 9.5 MILES SOUTHEAST OF WASHINGTON,
 HV7603'ABOUT 1.25 MILES SOUTHEAST OF THE JUNCTION OF STATE HIGHWAY 5 AND
 HV7603'ALLENTOWN ROAD, IN THE VILLAGE OF CAMP SPRINGS AND 0.05 MILE SOUTH
 HV7603'OF ALLENTOWN ROAD.
 HV7603'
 HV7603'IT IS PAINTED RED AND WHITE CHECKERED AND IS 175 FEET HIGH.
 HV7603'
 HV7603'THE POINT INTERSECTED WAS THE RED LIGHT ON THE TOP.
 HV7603'
 HV7603'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 5 (BRANCH
 HV7603'AVENUE) AND STATE HIGHWAY 337 (ALLENTOWN ROAD) IN THE VILLAGE OF
 HV7603'CAMP SPRINGS, ABOUT 10.0 MILES SOUTHEAST OF THE CENTER OF
 HV7603'WASHINGTON.  GO SOUTHWEST ON ALLENTOWN ROAD FOR 1.05 MILES TO
 HV7603'DRIVEWAY AND STATION ON LEFT.
 HV7603
 HV7603                          STATION RECOVERY (1970)
 HV7603
 HV7603'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7603'TO REACH THE STATION FROM THE INTERCHANGE OF INTERSTATE HIGHWAY
 HV7603'495 AND STATE HIGHWAY 5, BRANCH AVENUE, GO SOUTHEAST ON BRANCH
 HV7603'AVENUE FOR 1.3 MILES TO ALLENTOWN ROAD.  TURN RIGHT AND GO
 HV7603'SOUTHWEST ON ALLENTOWN ROAD FOR 1.1 MILES TO KIDDIMINSTER LANE
 HV7603'ON THE LEFT.  TURN LEFT AND GO SOUTHEAST ON KIDDIMINSTER LANE
 HV7603'FOR 0.05 MILE TO THE STATION ON THE RIGHT WITHIN A FENCED AREA.
 HV7603'
 HV7603'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION PAGETTS,
 HV7603'DISTANCE BEING 61.82 FEET (18.844 METERS) NORTHWEST OF STATION
 HV7603'PAGETTS.  THE POINT TRAVERSED TO WAS THE CENTER OF THE BASE OF THE
 HV7603'RISER OF A 150 FEET HIGH, DOUBLE ELLIPSOIDAL, ELEVATED WATER TANK.
 HV7603
 HV7603                          STATION RECOVERY (2005)
 HV7603
 HV7603'RECOVERY NOTE BY GEOCACHING 2005 (CMW)
 HV7603'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7612 ***********************************************************************
 HV7612  DESIGNATION -  CAMP SPRINGS BETHANY CH SPIRE
 HV7612  PID         -  HV7612
 HV7612  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7612  COUNTRY     -  US
 HV7612  USGS QUAD   -  ANACOSTIA (2016)
 HV7612
 HV7612                         *CURRENT SURVEY CONTROL
 HV7612  ______________________________________________________________________
 HV7612* NAD 83(1993) POSITION- 38 47 28.09603(N) 076 55 53.51039(W)   ADJUSTED
 HV7612  ______________________________________________________________________
 HV7612  GEOID HEIGHT    -        -32.444 (meters)                     GEOID18
 HV7612  LAPLACE CORR    -         -4.05  (seconds)                    DEFLEC18
 HV7612  HORZ ORDER      -  THIRD
 HV7612
 HV7612.The horizontal coordinates were established by classical geodetic methods
 HV7612.and adjusted by the National Geodetic Survey in November 1994.
 HV7612
 HV7612.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7612.GEOID18 height accuracy estimate available here.
 HV7612
 HV7612.Click photographs - Photos may exist for this station.
 HV7612
 HV7612.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7612
 HV7612. The following values were computed from the NAD 83(1993) position.
 HV7612
 HV7612;                    North         East     Units Scale Factor Converg.
 HV7612;SPC MD       -   124,823.064   405,948.358   MT  0.99995093   +0 02 34.7
 HV7612;SPC MD       -   409,523.67  1,331,848.90   sFT  0.99995093   +0 02 34.7
 HV7612;UTM  18      - 4,295,371.149   332,247.860   MT  0.99994654   -1 12 37.3
 HV7612
 HV7612_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3224795371(NAD 83)
 HV7612
 HV7612                          SUPERSEDED SURVEY CONTROL
 HV7612
 HV7612  NAD 83(1991)-  38 47 28.09502(N)    076 55 53.51110(W) AD(       ) 3
 HV7612  NAD 83(1986)-  38 47 28.09409(N)    076 55 53.52392(W) AD(       ) 3
 HV7612  NAD 27      -  38 47 27.68447(N)    076 55 54.61642(W) AD(       ) 3
 HV7612
 HV7612.Superseded values are not recommended for survey control.
 HV7612
 HV7612.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7612.See file dsdata.pdf to determine how the superseded data were derived.
 HV7612
 HV7612_MARKER: 90 = CHURCH SPIRE
 HV7612_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7612+SATELLITE: SATELLITE OBSERVATIONS - November 26, 2005
 HV7612
 HV7612  HISTORY     - Date     Condition        Report By
 HV7612  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7612  HISTORY     - 20051126 GOOD             GEOCAC
 HV7612
 HV7612                          STATION DESCRIPTION
 HV7612
 HV7612'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7612'THE STATION IS THE CENTER OF THE TOP OF THE CROSS ON THE SPIRE
 HV7612'OF THE CAMP SPRINGS BETHANY CHRISTIAN CHURCH LOCATED AT 7128
 HV7612'ALLENTOWN ROAD WHICH IS 1.7 MILES WEST OF THE INTERSECTION OF
 HV7612'STATE HIGHWAY 5 AND ALLENTOWN ROAD IN CAMP SPRINGS.  IT HAS AN
 HV7612'OVERALL HEIGHT OF 78 FEET.
 HV7612
 HV7612                          STATION RECOVERY (2005)
 HV7612
 HV7612'RECOVERY NOTE BY GEOCACHING 2005 (CMW)
 HV7612'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1682 ***********************************************************************
 HU1682  DESIGNATION -  CAMPBELL
 HU1682  PID         -  HU1682
 HU1682  STATE/COUNTY-  MD/WICOMICO
 HU1682  COUNTRY     -  US
 HU1682  USGS QUAD   -  WANGO (2016)
 HU1682
 HU1682                         *CURRENT SURVEY CONTROL
 HU1682  ______________________________________________________________________
 HU1682* NAD 83(1991) POSITION- 38 22 19.43018(N) 075 25 36.63791(W)   ADJUSTED
 HU1682* NAVD 88 ORTHO HEIGHT -    18.    (meters)       59.    (feet) SCALED
 HU1682  ______________________________________________________________________
 HU1682  GEOID HEIGHT    -        -35.913 (meters)                     GEOID18
 HU1682  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 HU1682  HORZ ORDER      -  SECOND
 HU1682
 HU1682.The horizontal coordinates were established by classical geodetic methods
 HU1682.and adjusted by the National Geodetic Survey in January 1992.
 HU1682
 HU1682.The orthometric height was scaled from a topographic map.
 HU1682
 HU1682.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1682.GEOID18 height accuracy estimate available here.
 HU1682
 HU1682.Click photographs - Photos may exist for this station.
 HU1682
 HU1682.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1682
 HU1682. The following values were computed from the NAD 83(1991) position.
 HU1682
 HU1682;                    North         East     Units Scale Factor Converg.
 HU1682;SPC MD       -    79,486.589   537,464.736   MT  0.99998824   +0 59 14.5
 HU1682;SPC MD       -   260,782.25  1,763,332.22   sFT  0.99998824   +0 59 14.5
 HU1682;UTM  18      - 4,247,183.814   462,714.300   MT  0.99961712   -0 15 53.9
 HU1682
 HU1682!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1682!SPC MD       -   1.00000285  x   0.99998824  =   0.99999109
 HU1682!UTM  18      -   1.00000285  x   0.99961712  =   0.99961997
 HU1682
 HU1682:                Primary Azimuth Mark                     Grid Az
 HU1682:SPC MD       -  PITTSVILLE W BASE RESET                  017 51 55.1
 HU1682:UTM  18      -  PITTSVILLE W BASE RESET                  019 07 03.5
 HU1682
 HU1682_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6271447183(NAD 83)
 HU1682
 HU1682|---------------------------------------------------------------------|
 HU1682| PID    Reference Object                     Distance      Geod. Az  |
 HU1682|                                                           dddmmss.s |
 HU1682| HU1688 PITTSVILLE W BASE RESET             APPROX. 2.7 KM 0185109.6 |
 HU1682| DC7883 CAMPBELL RM 1                        26.142 METERS 06527     |
 HU1682| DC7882 CAMPBELL AZ MK                                     1923947.4 |
 HU1682| HU2446 CAMPBELL RM 2                        24.219 METERS 28256     |
 HU1682|---------------------------------------------------------------------|
 HU1682
 HU1682                          SUPERSEDED SURVEY CONTROL
 HU1682
 HU1682  NAD 83(1986)-  38 22 19.41900(N)    075 25 36.66373(W) AD(       ) 2
 HU1682  NAD 27      -  38 22 19.00200(N)    075 25 37.95600(W) AD(       ) 2
 HU1682
 HU1682.Superseded values are not recommended for survey control.
 HU1682
 HU1682.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1682.See file dsdata.pdf to determine how the superseded data were derived.
 HU1682
 HU1682_MARKER: DS = TRIANGULATION STATION DISK
 HU1682_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1682_STAMPING: CAMPBELL 1955
 HU1682_MARK LOGO: CGS
 HU1682_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1682+STABILITY: SURFACE MOTION
 HU1682
 HU1682  HISTORY     - Date     Condition        Report By
 HU1682  HISTORY     - 1955     MONUMENTED       CGS
 HU1682  HISTORY     - 1974     MARK NOT FOUND   USGS
 HU1682
 HU1682                          STATION DESCRIPTION
 HU1682
 HU1682'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 HU1682'THE STATION IS LOCATED ABOUT 9 MILES EAST OF SALISBURY AND 2 MILES
 HU1682'SOUTH-SOUTHWEST OF PITTSVILLE.  IT IS 68 FEET SOUTHWEST OF THE
 HU1682'CENTER OF A CROSSROADS, 47 FEET WEST OF THE CENTER OF STATE HIGHWAY
 HU1682'353 AND 4 FEET SOUTHWEST OF A 4 IN X 4 IN WHITE WITNESS POST.
 HU1682'
 HU1682'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND
 HU1682'STATE HIGHWAY 353 IN PITTSVILLE, GO SOUTH ON HIGHWAY 353 FOR 1.35
 HU1682'MILE TO THE STATION ON THE RIGHT, CONTINUE SOUTH ON THE HIGHWAY
 HU1682'FOR 0.15 MILE TO THE AZIMUTH MARK ON THE LEFT.
 HU1682'
 HU1682'THE STATION MARK PROJECTS 4 INCHES AND THE DISK IS STAMPED
 HU1682'CAMPBELL 1955.
 HU1682'
 HU1682'REFERENCE MARK 1 IS 20 FEET EAST OF THE CENTER OF THE CROSSROADS
 HU1682'AND 88 FEET SOUTH OF A TELEPHONE POLE.  THE MARK PROJECTS 6 INCHES,
 HU1682'AND THE DISK IS STAMPED CAMPBELL NO 1 1955.
 HU1682'
 HU1682'REFERENCE MARK 2 IS 26 FEET SOUTH OF THE CENTER OF A WOODS
 HU1682'ROAD.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 HU1682'STAMPED CAMPBELL NO 2 1955.
 HU1682'
 HU1682'THE AZIMUTH MARK IS 28 FEET EAST OF THE CENTER OF THE HIGHWAY
 HU1682'AND 2 FEET NORTH OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK
 HU1682'PROJECTS 6 INCHES, AND THE DISK IS STAMPED CAMPBELL NO 1 1955.
 HU1682'
 HU1682'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HU1682
 HU1682                          STATION RECOVERY (1974)
 HU1682
 HU1682'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1974
 HU1682'THE AREA IS BEING LEVELED OFF BY HEAVY EQUIPMENT AND THE MARK
 HU1682'WAS PROBABLY DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4381 ***********************************************************************
 JV4381  DESIGNATION -  CAMPBELL
 JV4381  PID         -  JV4381
 JV4381  STATE/COUNTY-  MD/MONTGOMERY
 JV4381  COUNTRY     -  US
 JV4381  USGS QUAD   -  ROCKVILLE (2016)
 JV4381
 JV4381                         *CURRENT SURVEY CONTROL
 JV4381  ______________________________________________________________________
 JV4381* NAD 83(1993) POSITION- 39 00 03.31999(N) 077 10 57.73628(W)   ADJUSTED
 JV4381* NAVD 88 ORTHO HEIGHT -    93.9   (meters)      308.    (feet) VERTCON3
 JV4381  ______________________________________________________________________
 JV4381  GEOID HEIGHT    -        -31.758 (meters)                     GEOID18
 JV4381  LAPLACE CORR    -         -2.17  (seconds)                    DEFLEC18
 JV4381  HORZ ORDER      -  FIRST
 JV4381
 JV4381.The horizontal coordinates were established by classical geodetic methods
 JV4381.and adjusted by the National Geodetic Survey in November 1994.
 JV4381
 JV4381.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4381.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4381
 JV4381.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4381.GEOID18 height accuracy estimate available here.
 JV4381
 JV4381.Click photographs - Photos may exist for this station.
 JV4381
 JV4381.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4381
 JV4381. The following values were computed from the NAD 83(1993) position.
 JV4381
 JV4381;                    North         East     Units Scale Factor Converg.
 JV4381;SPC MD       -   148,124.421   384,173.936   MT  0.99995222   -0 06 52.8
 JV4381;SPC MD       -   485,971.54  1,260,410.66   sFT  0.99995222   -0 06 52.8
 JV4381;UTM  18      - 4,319,145.276   310,988.634   MT  1.00003992   -1 22 26.6
 JV4381
 JV4381!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4381!SPC MD       -   0.99999026  x   0.99995222  =   0.99994248
 JV4381!UTM  18      -   0.99999026  x   1.00003992  =   1.00003017
 JV4381
 JV4381:                Primary Azimuth Mark                     Grid Az
 JV4381:SPC MD       -  CAMPBELL AZ MK 2                         060 04 54.1
 JV4381:UTM  18      -  CAMPBELL AZ MK 2                         061 20 27.9
 JV4381
 JV4381_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1098819145(NAD 83)
 JV4381
 JV4381|---------------------------------------------------------------------|
 JV4381| PID    Reference Object                     Distance      Geod. Az  |
 JV4381|                                                           dddmmss.s |
 JV4381| CK6758 CAMPBELL AZ MK 2                                   0595801.3 |
 JV4381| CK6757 CAMPBELL AZ MK                                     0644403.1 |
 JV4381| CK6759 CAMPBELL RM 1                        22.603 METERS 06923     |
 JV4381| CK6760 CAMPBELL RM 2                        16.570 METERS 27933     |
 JV4381|---------------------------------------------------------------------|
 JV4381
 JV4381                          SUPERSEDED SURVEY CONTROL
 JV4381
 JV4381  NAD 83(1991)-  39 00 03.31953(N)    077 10 57.73759(W) AD(       ) 1
 JV4381  NAD 83(1986)-  39 00 03.31938(N)    077 10 57.74717(W) AD(       ) 1
 JV4381  NAD 27      -  39 00 02.92501(N)    077 10 58.81172(W) AD(       ) 1
 JV4381  NGVD 29 (07/19/86)   94.1    (m)          309.     (f) VERT ANG       
 JV4381
 JV4381.Superseded values are not recommended for survey control.
 JV4381
 JV4381.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4381.See file dsdata.pdf to determine how the superseded data were derived.
 JV4381
 JV4381_MARKER: DS = TRIANGULATION STATION DISK
 JV4381_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4381_STAMPING: CAMPBELL 1958
 JV4381_MARK LOGO: CGS
 JV4381_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4381+STABILITY: SURFACE MOTION
 JV4381
 JV4381  HISTORY     - Date     Condition        Report By
 JV4381  HISTORY     - 1958     MONUMENTED       CGS
 JV4381  HISTORY     - 1969     GOOD             CGS
 JV4381
 JV4381                          STATION DESCRIPTION
 JV4381
 JV4381'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4381'STATION IS LOCATED ABOUT 11.0 MILES NORTHWEST OF WASHINGTON, 6 MILES
 JV4381'SOUTH-SOUTHWEST OF ROCKVILLE, 4.5 MILES WEST OF BETHESDA, AND ABOUT
 JV4381'2 MILES NORTH OF THE POTOMAC RIVER.  42 FEET SOUTH OF FENCE, 34
 JV4381'FEET NORTHEAST OF A MAPLE TREE, 13 FEET SOUTHWEST OF LOCUST TREE,
 JV4381'AND 4 FEET SOUTH OF THE EDGE OF GOLF COURSE.  THE MARK IS SET
 JV4381'FLUSH AND THE DISK IS STAMPED, CAMPBELL 1958.
 JV4381'
 JV4381'AZIMUTH MARK IS 21 FEET SOUTHWEST OF STATE HIGHWAY NO. 190, 5 FEET
 JV4381'NORTHWEST OF WHITE WITNESS POST, AND UNDER POWERLINE.  THE MARK IS
 JV4381'SET FLUSH AND THE DISK IS STAMPED, CAMPBELL 1958.
 JV4381'
 JV4381'REFERENCE MARK NO. 1 IS 56 FEET SOUTH OF FENCE.  THE MARK IS SET
 JV4381'FLUSH AND THE DISK IS STAMPED, RM NO 1 1958.
 JV4381'
 JV4381'REFERENCE MARK NO. 2 IS 6-1/2 FEET SOUTH OF FENCE, 21 FEET SOUTH OF
 JV4381'STATE HIGHWAY NO. 191, AND ON EDGE OF GOLF COURSE.  THE MARK IS SET
 JV4381'FLUSH AND THE DISK IS STAMPED, RM NO 2 1958.
 JV4381'
 JV4381'TO REACH AZIMUTH MARK FROM STATION GO EASTERLY ON STATE HIGHWAY NO.
 JV4381'191 FOR 0.1 MILE TO STATE HIGHWAY NO. 190.  TURN RIGHT AND GO
 JV4381'SOUTHERLY FOR 100 YARDS AND MARK ON RIGHT AS DESCRIBED.
 JV4381'
 JV4381'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY NO. 190 AND
 JV4381'STATE HIGHWAY NO. 191 ABOUT 4.5 MILES WEST OF BETHESDA, GO WESTERLY
 JV4381'ON STATE HIGHWAY NO. 191 FOR 0.1 MILE TO TOP OF HILL AND STATION ON
 JV4381'LEFT AS DESCRIBED.
 JV4381'
 JV4381'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV4381
 JV4381                          STATION RECOVERY (1969)
 JV4381
 JV4381'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4381'THE STATION MARK AND REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 JV4381'CONDITION.  THE AZIMUTH MARK WAS SEARCHED FOR BUT NOT FOUND.  A NEW
 JV4381'AZIMUTH MARK WAS ESTABLISHED.  DUE TO ROUTING CHANGES AND THE NEW
 JV4381'AZIMUTH MARK THE FOLLOWING IS A NEW DESCRIPTION.
 JV4381'
 JV4381'THE STATION IS ABOUT 6 MILES SOUTH-SOUTHWEST OF ROCKVILLE, 2-1/4
 JV4381'MILES NORTH OF THE POTOMAC RIVER, 1-3/4 MILES SOUTHEAST OF POTOMAC,
 JV4381'AND ON THE PROPERTY OF THE CONGRESSIONAL COUNTRY CLUB.
 JV4381'
 JV4381'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAY 495
 JV4381'AND STATE HIGHWAY 190, RIVER ROAD, GO NORTHWEST ON STATE HIGHWAY
 JV4381'190 FOR 1.5 MILES TO A CROSSROAD, AN ENTRANCE TO THE CONGRESSIONAL
 JV4381'COUNTRY CLUB, AND THE AZIMUTH MARK ON THE LEFT.  TURN LEFT, THEN
 JV4381'LEFT AGAIN, ONTO THE ENTRANCE TO THE CONGRESSIONAL COUNTRY CLUB, AND
 JV4381'GO SOUTH FOR 0.1 MILE, PASSING BETWEEN OUTBUILDINGS, TO A
 JV4381'GRAVELED T-ROAD.  TURN RIGHT AND GO WEST ON THE GRAVELED ROAD
 JV4381'FOR 0.1 MILE TO THE STATION AT THE NORTHWEST CORNER OF A GOLF
 JV4381'COURSE.
 JV4381'
 JV4381'THE STATION MARK IS A STANDARD DISK, STAMPED CAMPBELL 1958, SET IN
 JV4381'THE TOP OF A 10-INCH SQUARE CONCRETE POST, THAT IS 1 INCH BELOW THE
 JV4381'GROUND SURFACE.  IT IS 76.6 FEET WEST OF A WITNESS POST, 71.0 FEET
 JV4381'NORTHWEST OF THE CENTERLINE OF THE GRAVELED ROAD, AND 40.0 FEET
 JV4381'SOUTHEAST OF A WOVEN WIRE FENCE.
 JV4381'
 JV4381'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CAMPBELL NO 1 1958, SET
 JV4381'IN THE TOP OF A 10-INCH SQUARE CONCRETE POST, THAT IS FLUSH WITH THE
 JV4381'GROUND SURFACE.  IT IS 86.0 FEET NORTH OF THE CENTERLINE OF THE
 JV4381'GRAVELED ROAD, 2.5 FEET WEST OF A WITNESS POST, 1.5 FEET WEST OF A
 JV4381'SNOW FENCE, AND ABOUT THE SAME ELEVATION AS THE STATION.
 JV4381'
 JV4381'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CAMPBELL NO 2 1958, SET
 JV4381'IN THE TOP OF A 10-INCH SQUARE CONCRETE POST, THAT IS FLUSH WITH THE
 JV4381'GROUND SURFACE.  IT IS 91.0 FEET NORTHWEST OF THE CENTERLINE OF THE
 JV4381'GRAVELED ROAD, 2.4 FEET SOUTHEAST OF THE WOVEN WIRE FENCE, AND
 JV4381'ABOUT THE SAME ELEVATION AS THE STATION.
 JV4381'
 JV4381'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED CAMPBELL NO 2 1958 1969,
 JV4381'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV4381'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 71.5 FEET EAST OF THE
 JV4381'CENTERLINE OF THE ENTRANCE ROAD TO THE CLUB, 19.7 FEET SOUTHWEST
 JV4381'OF THE CENTERLINE OF STATE HIGHWAY 190, 2.1 FEET NORTHEAST OF A
 JV4381'BOARD FENCE, 1.8 FEET NORTHWEST OF A WITNESS POST, AND 1.4 FEET
 JV4381'SOUTHEAST OF A POWER LINE POLE.
 JV4381'
 JV4381'RM 1 TO RM 2 OBSTRUCTED.
 JV4381'
 JV4381'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1-3/4 MILES
 JV4381'SOUTHEAST OF POTOMAC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2446 ***********************************************************************
 HU2446  DESIGNATION -  CAMPBELL RM 2
 HU2446  PID         -  HU2446
 HU2446  STATE/COUNTY-  MD/WICOMICO
 HU2446  COUNTRY     -  US
 HU2446  USGS QUAD   -  WANGO (2016)
 HU2446
 HU2446                         *CURRENT SURVEY CONTROL
 HU2446  ______________________________________________________________________
 HU2446* NAD 83(1986) POSITION- 38 22 19.61   (N) 075 25 37.61   (W)   HD_HELD1
 HU2446* NAVD 88 ORTHO HEIGHT -    18.163 (meters)       59.59  (feet) ADJUSTED
 HU2446  ______________________________________________________________________
 HU2446  GEOID HEIGHT    -        -35.912 (meters)                     GEOID18
 HU2446  DYNAMIC HEIGHT  -         18.152 (meters)       59.55  (feet) COMP
 HU2446  MODELED GRAVITY -    980,005.8   (mgal)                       NAVD 88
 HU2446
 HU2446  VERT ORDER      -  SECOND    CLASS I
 HU2446
 HU2446.The horizontal coordinates were determined by differentially corrected
 HU2446.hand held GPS observations or other comparable positioning techniques
 HU2446.and have an estimated accuracy of +/- 3 meters.
 HU2446
 HU2446.The orthometric height was determined by differential leveling and
 HU2446.adjusted by the NATIONAL GEODETIC SURVEY
 HU2446.in June 1991.
 HU2446
 HU2446.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2446.GEOID18 height accuracy estimate available here.
 HU2446
 HU2446.Click photographs - Photos may exist for this station.
 HU2446
 HU2446.The dynamic height is computed by dividing the NAVD 88
 HU2446.geopotential number by the normal gravity value computed on the
 HU2446.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2446.degrees latitude (g = 980.6199 gals.).
 HU2446
 HU2446.The modeled gravity was interpolated from observed gravity values.
 HU2446
 HU2446;                    North         East    Units  Estimated Accuracy
 HU2446;SPC MD       -    79,491.7     537,441.0     MT  (+/- 3 meters HH1 GPS) 
 HU2446
 HU2446_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6269047189(NAD 83)
 HU2446
 HU2446                          SUPERSEDED SURVEY CONTROL
 HU2446
 HU2446  NGVD 29 (06/12/91)   18.406  (m)           60.39   (f) ADJUSTED    2 1
 HU2446
 HU2446.Superseded values are not recommended for survey control.
 HU2446
 HU2446.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2446.See file dsdata.pdf to determine how the superseded data were derived.
 HU2446
 HU2446_MARKER: DR = REFERENCE MARK DISK
 HU2446_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2446_STAMPING: CAMPBELL NO. 2 1955
 HU2446_MARK LOGO: CGS
 HU2446_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2446+STABILITY: SURFACE MOTION
 HU2446_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2446+SATELLITE: SATELLITE OBSERVATIONS - March 27, 1990
 HU2446
 HU2446  HISTORY     - Date     Condition        Report By
 HU2446  HISTORY     - 1955     MONUMENTED       CGS
 HU2446  HISTORY     - 19900327 GOOD             NGS
 HU2446
 HU2446                          STATION DESCRIPTION
 HU2446
 HU2446'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2446'2.3 KM (1.43 MI) SOUTHWESTERLY ALONG SIXTY FOOT ROAD FROM THE JUNCTION
 HU2446'OF STATE HIGHWAY 346 (OCEAN CITY ROAD) IN PITTSVILLE, 38.7 M
 HU2446'(126.97 FT) NORTHWEST OF THE CENTERLINE OF THE ROAD, 3.5 M
 HU2446'(11.48 FT) SOUTHWEST OF A FENCE, 0.6 M (1.97 FT) ABOVE THE LEVEL OF
 HU2446'THE ROAD, 0.4 M (1.31 FT) EAST OF A WITNESS POST, AND IN A CONCRETE
 HU2446'MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6137 ***********************************************************************
 HV6137  DESIGNATION -  CAN MSFC 1908
 HV6137  PID         -  HV6137
 HV6137  STATE/COUNTY-  MD/DORCHESTER
 HV6137  COUNTRY     -  US
 HV6137  USGS QUAD   -  HUDSON (2016)
 HV6137
 HV6137                         *CURRENT SURVEY CONTROL
 HV6137  ______________________________________________________________________
 HV6137* NAD 83(1991) POSITION- 38 30 06.57457(N) 076 18 08.28142(W)   ADJUSTED
 HV6137* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6137  ______________________________________________________________________
 HV6137  GEOID HEIGHT    -        -34.574 (meters)                     GEOID18
 HV6137  LAPLACE CORR    -         -4.72  (seconds)                    DEFLEC18
 HV6137  HORZ ORDER      -  THIRD
 HV6137
 HV6137.The horizontal coordinates were established by classical geodetic methods
 HV6137.and adjusted by the National Geodetic Survey in January 1992.
 HV6137
 HV6137.The orthometric height was scaled from a topographic map.
 HV6137
 HV6137.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6137.GEOID18 height accuracy estimate available here.
 HV6137
 HV6137.Click photographs - Photos may exist for this station.
 HV6137
 HV6137.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6137
 HV6137. The following values were computed from the NAD 83(1991) position.
 HV6137
 HV6137;                    North         East     Units Scale Factor Converg.
 HV6137;SPC MD       -    92,938.611   460,858.374   MT  0.99997102   +0 26 16.4
 HV6137;SPC MD       -   304,916.09  1,511,999.52   sFT  0.99997102   +0 26 16.4
 HV6137;UTM  18      - 4,262,299.565   386,442.820   MT  0.99975880   -0 48 39.0
 HV6137
 HV6137!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6137!SPC MD       -   1.00000515  x   0.99997102  =   0.99997617
 HV6137!UTM  18      -   1.00000515  x   0.99975880  =   0.99976395
 HV6137
 HV6137:                Primary Azimuth Mark                     Grid Az
 HV6137:SPC MD       -  HILL                                     351 47 57.0
 HV6137:UTM  18      -  HILL                                     353 02 52.4
 HV6137
 HV6137_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8644262299(NAD 83)
 HV6137
 HV6137|---------------------------------------------------------------------|
 HV6137| PID    Reference Object                     Distance      Geod. Az  |
 HV6137|                                                           dddmmss.s |
 HV6137| HV6123 REDE                                APPROX. 3.3 KM 2941746.6 |
 HV6137| HV6129 HILL                                APPROX. 7.2 KM 3521413.4 |
 HV6137|---------------------------------------------------------------------|
 HV6137
 HV6137                          SUPERSEDED SURVEY CONTROL
 HV6137
 HV6137  NAD 83(1986)-  38 30 06.57275(N)    076 18 08.29701(W) AD(       ) 3
 HV6137  NAD 27      -  38 30 06.14000(N)    076 18 09.47500(W) AD(       ) 3
 HV6137  USSD        -  38 30 06.51500(N)    076 18 09.26400(W) AD(       ) 3
 HV6137
 HV6137.Superseded values are not recommended for survey control.
 HV6137
 HV6137.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6137.See file dsdata.pdf to determine how the superseded data were derived.
 HV6137
 HV6137
 HV6137  HISTORY     - Date     Condition        Report By
 HV6137  HISTORY     - 1908     MONUMENTED       CGS
 HV6137  HISTORY     - 1910     GOOD             CGS
 HV6137  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6137
 HV6137                          STATION DESCRIPTION
 HV6137
 HV6137'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV6137'ON THE SOUTHERN SHORE OF LITTLE CHOPTANK RIVER, ON A POINT ABOUT
 HV6137'2 MILES E OF THE SOUTHEASTERN END OF JAMES ISLAND AND 1 MILE W
 HV6137'OF ENTRANCE TO SLAUGHTER CREEK.  STATION IS ON A MARSH POINT,
 HV6137'ABOUT 1 FOOT ABOVE HIGH WATER, 9 YARDS SW OF SHORE, 17 YARDS SE
 HV6137'OF END OF POINT, 20 YARDS E OF SHORE, AND 180 YARDS NNW OF A
 HV6137'HOUSE AMONG TREES.  STATION MARK IS CENTER OF 4-INCH TILE PIPE
 HV6137'SET IN CEMENT AND PROJECTING 2 INCHES ABOVE SURFACE OF
 HV6137'GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF
 HV6137'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6137'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6137'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6137'COUNTER-SUNK IN TOP OF POST.  IT IS 9.25 METERS (30.35 FEET)
 HV6137'FROM STATION S 6 DEG 58 MIN E.  DISTANCES AND
 HV6137'BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 HV6137'FOLLOWS--NEAR PEAK OF LARGE BARN, 1-1/4 MILES, S 58 DEG 38 MIN W.
 HV6137'LEFT CHIMNEY OF LARGE HOUSE ON N END OF TAYLOR ISLAND, 1-3/8
 HV6137'MILES, S 76 DEG 33 MIN W.  TANGENT TO N END OF TAYLOR ISLAND, 1
 HV6137'3/8 MILES, S 86 DEG 57 MIN W.  CHIMNEY ON NEAR END OF OLD HOUSE, 2
 HV6137'MILES, N 81 DEG 43 MIN W.  CHIMNEY ON END OF SMALL ADDITION TO
 HV6137'HOUSE, 2-1/4 MILES, N 51 DEG 00 MIN W.  LEFT CHIMNEY OF HOUSE, 180
 HV6137'YARDS, S 58 DEG 35 MIN E.
 HV6137
 HV6137                          STATION RECOVERY (1942)
 HV6137
 HV6137'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (LWS)
 HV6137'SEARCHED FOR, BUT NOT FOUND.  THE POINT HAS WASHED BADLY AND
 HV6137'CATCHES THE FULL FORCE OF THE NE AND NW GALES.
 HV6137'
 HV6137'RECOMMENDED THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3587 ***********************************************************************
 JV3587  DESIGNATION -  CANDY
 JV3587  PID         -  JV3587
 JV3587  STATE/COUNTY-  MD/FREDERICK
 JV3587  COUNTRY     -  US
 JV3587  USGS QUAD   -  MYERSVILLE (2016)
 JV3587
 JV3587                         *CURRENT SURVEY CONTROL
 JV3587  ______________________________________________________________________
 JV3587* NAD 83(1991) POSITION- 39 30 49.35263(N) 077 33 54.58843(W)   ADJUSTED
 JV3587* NAVD 88 ORTHO HEIGHT -   208.403 (meters)      683.74  (feet) ADJUSTED
 JV3587  ______________________________________________________________________
 JV3587  GEOID HEIGHT    -        -33.249 (meters)                     GEOID18
 JV3587  LAPLACE CORR    -          7.48  (seconds)                    DEFLEC18
 JV3587  DYNAMIC HEIGHT  -        208.286 (meters)      683.35  (feet) COMP
 JV3587  MODELED GRAVITY -    980,058.0   (mgal)                       NAVD 88
 JV3587
 JV3587  HORZ ORDER      -  SECOND
 JV3587  VERT ORDER      -  SECOND    CLASS I
 JV3587
 JV3587.The horizontal coordinates were established by classical geodetic methods
 JV3587.and adjusted by the National Geodetic Survey in January 1992.
 JV3587
 JV3587.The orthometric height was determined by differential leveling and
 JV3587.adjusted by the NATIONAL GEODETIC SURVEY
 JV3587.in November 2003.
 JV3587
 JV3587.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3587.GEOID18 height accuracy estimate available here.
 JV3587
 JV3587.Click photographs - Photos may exist for this station.
 JV3587
 JV3587.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3587
 JV3587.The dynamic height is computed by dividing the NAVD 88
 JV3587.geopotential number by the normal gravity value computed on the
 JV3587.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3587.degrees latitude (g = 980.6199 gals.).
 JV3587
 JV3587.The modeled gravity was interpolated from observed gravity values.
 JV3587
 JV3587. The following values were computed from the NAD 83(1991) position.
 JV3587
 JV3587;                    North         East     Units Scale Factor Converg.
 JV3587;SPC MD       -   205,187.426   351,397.649   MT  1.00001177   -0 21 17.0
 JV3587;SPC MD       -   673,185.75  1,152,877.12   sFT  1.00001177   -0 21 17.0
 JV3587;UTM  18      - 4,376,927.972   279,478.931   MT  1.00019877   -1 37 58.0
 JV3587
 JV3587!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3587!SPC MD       -   0.99997252  x   1.00001177  =   0.99998429
 JV3587!UTM  18      -   0.99997252  x   1.00019877  =   1.00017129
 JV3587
 JV3587:                Primary Azimuth Mark                     Grid Az
 JV3587:SPC MD       -  JERU                                     310 34 09.1
 JV3587:UTM  18      -  JERU                                     311 50 50.1
 JV3587
 JV3587_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7947876927(NAD 83)
 JV3587
 JV3587|---------------------------------------------------------------------|
 JV3587| PID    Reference Object                     Distance      Geod. Az  |
 JV3587|                                                           dddmmss.s |
 JV3587| JV3588 CANDY RM 1                           10.006 METERS 12112     |
 JV3587| JV3584 JERU                                APPROX. 2.2 KM 3101252.1 |
 JV3587| JV3589 CANDY RM 2                            9.026 METERS 32007     |
 JV3587|---------------------------------------------------------------------|
 JV3587
 JV3587                          SUPERSEDED SURVEY CONTROL
 JV3587
 JV3587  NAD 83(1986)-  39 30 49.35252(N)    077 33 54.59798(W) AD(       ) 2
 JV3587  NAD 27      -  39 30 48.99890(N)    077 33 55.64140(W) AD(       ) 2
 JV3587  NAVD 88 (06/15/91)  208.413  (m)          683.77   (f) SUPERSEDED  2 0
 JV3587  NGVD 29             208.62   (m)          684.4    (f) LEVELING    3  
 JV3587  NGVD 29 (11/26/84)  208.623  (m)          684.46   (f) ADJUSTED    2 0
 JV3587
 JV3587.Superseded values are not recommended for survey control.
 JV3587
 JV3587.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3587.See file dsdata.pdf to determine how the superseded data were derived.
 JV3587
 JV3587_MARKER: DS = TRIANGULATION STATION DISK
 JV3587_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3587_STAMPING: CANDY 1957
 JV3587_MARK LOGO: CGS
 JV3587_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3587_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3587+STABILITY: SURFACE MOTION
 JV3587
 JV3587  HISTORY     - Date     Condition        Report By
 JV3587  HISTORY     - 1958     MONUMENTED       CGS
 JV3587  HISTORY     - 1958     GOOD             CGS
 JV3587  HISTORY     - 20011121 GOOD             MDSHA
 JV3587
 JV3587                          STATION DESCRIPTION
 JV3587
 JV3587'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV3587'THE STATION IS LOCATED ON A LOW HILL IN THE VALLEY BETWEEN SOUTH
 JV3587'MOUNTAIN AND CATOCTIN MOUNTAIN, ABOUT 12 MILES SOUTHEAST OF
 JV3587'HAGERSTOWN, 10.5 MILES NORTHWEST OF FREDERICK, IN THE NORTH EDGE
 JV3587'OF MYERSVILLE AND 0.05 MILE EAST OF WHERE CHURCH HILL ROAD
 JV3587'CROSSES U.S. HIGHWAY 40.  IT IS 20 FEET NORTH OF ROAD EMBANKMENT
 JV3587'AND 2 FEET SOUTH OF WITNESS POST.  THE MARK IS SET FLUSH AND THE
 JV3587'DISK IS STAMPED CANDY 1957.
 JV3587'
 JV3587'REFERENCE MARK NO. 1 IS 25 FEET NORTH OF ROAD EMBANKMENT.  THE
 JV3587'MARK IS SET FLUSH AND THE DISK IS STAMPED CANDY NO 1 1957.
 JV3587'
 JV3587'REFERENCE MARK NO. 2 IS 25 FEET NORTH OF ROAD EMBANKMENT.  THE
 JV3587'MARK IS SET FLUSH AND THE DISK IS STAMPED CANDY NO 2 1957.
 JV3587'
 JV3587'TO REACH FROM THE POST OFFICE IN FREDERICK GO WEST ON
 JV3587'U.S. HIGHWAY 40 FOR 3.0 MILES TO JUNCTION OF U.S. ALTERNATE 40,
 JV3587'CONTINUE NORTHWEST ON U.S. HIGHWAY 40 FOR 3.45 MILES TO TOP OF
 JV3587'MOUNTAIN, CONTINUE ON U.S. HIGHWAY 40 FOR 4.9 MILES TO CROSSROADS
 JV3587'AND JUNCTION WITH STATE HIGHWAY 153.  CONTINUE NORTHWEST ON
 JV3587'U.S. HIGHWAY 40 FOR 0.4 MILE TO START OF CUT, TURN RIGHT OFF
 JV3587'ROAD AND GO NORTHWEST ALONG RIGHT-OF-WAY TO TOP OF KNOLL AND
 JV3587'STATION AS DESCRIBED.
 JV3587'
 JV3587'TRAINGULATION STATION MYERSVILLE 1955 WAS USED AS AZIMUTH.
 JV3587'
 JV3587'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV3587
 JV3587                          STATION RECOVERY (1958)
 JV3587
 JV3587'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV3587'1 MI NW FROM MYERSVILLE.
 JV3587'0.5 MILE NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV3587'AT MYERSVILLE, THENCE 0.5 MILE NORTHWEST ALONG U.S. HIGHWAY 40,
 JV3587'ON TOP OF A CUT BANK NORTHEAST OF THE HIGHWAY, 20 FEET NORTHEAST
 JV3587'OF THE EDGE OF THE CUT, AND SET IN THE TOP OF A CONCRETE POST
 JV3587'PROJECTING 0.6 FOOT ABOVE THE GROUND.
 JV3587
 JV3587                          STATION RECOVERY (2001)
 JV3587
 JV3587'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3587'THE STATION IS LOCATED ABOUT 12 MI (19.31 KM) SOUTHEAST OF HAGERSTOWN,
 JV3587'10.5 MI (16.9 KM) NORTHWEST OF FREDERICK AND 0.5 MI (0.8 KM) NORTHWEST
 JV3587'OF MYERSVILLE.  TO REACH THE STATION FROM THE INTERSECTION OF U.S.
 JV3587'HIGHWAY 70 AND STATE HIGHWAY 17, GO NORTHEAST ALONG STATE HIGHWAY 17
 JV3587'FOR 1.2 MI (1.93 KM) TO U.S. HIGHWAY 40. TURN LEFT AND GO NORTHWEST
 JV3587'ALONG U.S.40 FOR 0.5 MI (0.8 KM) TO THE TOP OF A SMALL KNOLL, ABOUT
 JV3587'0.05 MI (0.08 KM) EAST OF CHURCH HILL ROAD AND THE STATION ON THE
 JV3587'RIGHT,  THE STATION IS LOCATED IN A GARDEN BETWEEN THE TOP OF THE CUT
 JV3587'BANK AND MEADOWS HILL DRIVE HOUSE NUMBER 3003. IT IS 20 FT (6.1 M)
 JV3587'NORTHEAST OF THE TOP OF THE CUT BANK, 58.5 FT (17.8 M) SOUTHEAST OF
 JV3587'THE SOUTHEAST CORNER OF A BLOCK AND BRICK GARAGE, 22.3 FT (6.8 M)
 JV3587'SOUTHWEST OF THE CENTER OF A WELL CAP PIPE, 15.3 FT (4.7 M)
 JV3587'EAST-NORTHEAST OF POWER POLE NUMBER F-62680.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3588 ***********************************************************************
 JV3588  DESIGNATION -  CANDY RM 1
 JV3588  PID         -  JV3588
 JV3588  STATE/COUNTY-  MD/FREDERICK
 JV3588  COUNTRY     -  US
 JV3588  USGS QUAD   -  MYERSVILLE (2016)
 JV3588
 JV3588                         *CURRENT SURVEY CONTROL
 JV3588  ______________________________________________________________________
 JV3588* NAD 83(1986) POSITION- 39 30 49.18   (N) 077 33 54.23   (W)   HD_HELD1
 JV3588* NAVD 88 ORTHO HEIGHT -   208.051 (meters)      682.58  (feet) ADJUSTED
 JV3588  ______________________________________________________________________
 JV3588  GEOID HEIGHT    -        -33.248 (meters)                     GEOID18
 JV3588  DYNAMIC HEIGHT  -        207.933 (meters)      682.19  (feet) COMP
 JV3588  MODELED GRAVITY -    980,058.0   (mgal)                       NAVD 88
 JV3588
 JV3588  VERT ORDER      -  SECOND    CLASS I
 JV3588
 JV3588.The horizontal coordinates were determined by differentially corrected
 JV3588.hand held GPS observations or other comparable positioning techniques
 JV3588.and have an estimated accuracy of +/- 3 meters.
 JV3588
 JV3588.The orthometric height was determined by differential leveling and
 JV3588.adjusted by the NATIONAL GEODETIC SURVEY
 JV3588.in June 1991.
 JV3588
 JV3588.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3588.GEOID18 height accuracy estimate available here.
 JV3588
 JV3588.Click photographs - Photos may exist for this station.
 JV3588
 JV3588.The dynamic height is computed by dividing the NAVD 88
 JV3588.geopotential number by the normal gravity value computed on the
 JV3588.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3588.degrees latitude (g = 980.6199 gals.).
 JV3588
 JV3588.The modeled gravity was interpolated from observed gravity values.
 JV3588
 JV3588;                    North         East    Units  Estimated Accuracy
 JV3588;SPC MD       -   205,182.0     351,406.2     MT  (+/- 3 meters HH1 GPS) 
 JV3588
 JV3588_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7948776922(NAD 83)
 JV3588
 JV3588                          SUPERSEDED SURVEY CONTROL
 JV3588
 JV3588  NGVD 29 (11/26/84)  208.261  (m)          683.27   (f) ADJUSTED    2 0
 JV3588
 JV3588.Superseded values are not recommended for survey control.
 JV3588
 JV3588.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3588.See file dsdata.pdf to determine how the superseded data were derived.
 JV3588
 JV3588_MARKER: DR = REFERENCE MARK DISK
 JV3588_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3588_STAMPING: CANDY NO 1 1957
 JV3588_MARK LOGO: CGS
 JV3588_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3588_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3588+STABILITY: SURFACE MOTION
 JV3588
 JV3588  HISTORY     - Date     Condition        Report By
 JV3588  HISTORY     - 1957     MONUMENTED       CGS
 JV3588  HISTORY     - 1958     GOOD             CGS
 JV3588  HISTORY     - 20011121 GOOD             MDSHA
 JV3588
 JV3588                          STATION DESCRIPTION
 JV3588
 JV3588'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3588'1 MI NW FROM MYERSVILLE.
 JV3588'0.5 MILE NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV3588'AT MYERSVILLE, THENCE 0.5 MILE NORTHWEST ALONG U.S. HIGHWAY 40,
 JV3588'ON TOP OF A CUT BANK NORTHEAST OF THE HIGHWAY, 32.83 FEET
 JV3588'EAST-SOUTHEAST OF THE TRIANGULATION STATION, AND 25 FEET NORTH
 JV3588'OF ROAD EMBANKMENT.  A STANDARD REFERENCE-MARK DISK, STAMPED
 JV3588'CANDY NO 1 1957 AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV3588'THE GROUND.
 JV3588
 JV3588                          STATION RECOVERY (2001)
 JV3588
 JV3588'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3588'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3589 ***********************************************************************
 JV3589  DESIGNATION -  CANDY RM 2
 JV3589  PID         -  JV3589
 JV3589  STATE/COUNTY-  MD/FREDERICK
 JV3589  COUNTRY     -  US
 JV3589  USGS QUAD   -  MYERSVILLE (2016)
 JV3589
 JV3589                         *CURRENT SURVEY CONTROL
 JV3589  ______________________________________________________________________
 JV3589* NAD 83(1986) POSITION- 39 30 49.58   (N) 077 33 54.83   (W)   HD_HELD1
 JV3589* NAVD 88 ORTHO HEIGHT -   208.504 (meters)      684.07  (feet) ADJUSTED
 JV3589  ______________________________________________________________________
 JV3589  GEOID HEIGHT    -        -33.249 (meters)                     GEOID18
 JV3589  DYNAMIC HEIGHT  -        208.386 (meters)      683.68  (feet) COMP
 JV3589  MODELED GRAVITY -    980,058.0   (mgal)                       NAVD 88
 JV3589
 JV3589  VERT ORDER      -  SECOND    CLASS I
 JV3589
 JV3589.The horizontal coordinates were determined by differentially corrected
 JV3589.hand held GPS observations or other comparable positioning techniques
 JV3589.and have an estimated accuracy of +/- 3 meters.
 JV3589
 JV3589.The orthometric height was determined by differential leveling and
 JV3589.adjusted by the NATIONAL GEODETIC SURVEY
 JV3589.in November 2003.
 JV3589
 JV3589.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3589.GEOID18 height accuracy estimate available here.
 JV3589
 JV3589.Click photographs - Photos may exist for this station.
 JV3589
 JV3589.The dynamic height is computed by dividing the NAVD 88
 JV3589.geopotential number by the normal gravity value computed on the
 JV3589.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3589.degrees latitude (g = 980.6199 gals.).
 JV3589
 JV3589.The modeled gravity was interpolated from observed gravity values.
 JV3589
 JV3589;                    North         East    Units  Estimated Accuracy
 JV3589;SPC MD       -   205,194.5     351,391.9     MT  (+/- 3 meters HH1 GPS) 
 JV3589
 JV3589_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7947376935(NAD 83)
 JV3589
 JV3589                          SUPERSEDED SURVEY CONTROL
 JV3589
 JV3589  NAVD 88 (06/15/91)  208.505  (m)          684.07   (f) SUPERSEDED  2 0
 JV3589  NGVD 29 (11/26/84)  208.716  (m)          684.76   (f) ADJUSTED    2 0
 JV3589
 JV3589.Superseded values are not recommended for survey control.
 JV3589
 JV3589.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3589.See file dsdata.pdf to determine how the superseded data were derived.
 JV3589
 JV3589_MARKER: DR = REFERENCE MARK DISK
 JV3589_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3589_STAMPING: CANDY NO 2 1957
 JV3589_MARK LOGO: CGS
 JV3589_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3589_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3589+STABILITY: SURFACE MOTION
 JV3589
 JV3589  HISTORY     - Date     Condition        Report By
 JV3589  HISTORY     - 1957     MONUMENTED       CGS
 JV3589  HISTORY     - 1958     GOOD             CGS
 JV3589  HISTORY     - 20011121 GOOD             MDSHA
 JV3589
 JV3589                          STATION DESCRIPTION
 JV3589
 JV3589'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3589'1 MI NW FROM MYERSVILLE.
 JV3589'0.5 MILE NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV3589'AT MYERSVILLE, THENCE 0.5 MILE NORTHWEST ALONG U.S. HIGHWAY 40,
 JV3589'ON TOP OF A CUT BANK NORTHEAST OF THE HIGHWAY, 29.61 FEET NORTHWEST
 JV3589'OF THE TRIANGULATION STATION, AND 25 FEET NORTH OF ROAD
 JV3589'EMBANKMENT.  A STANDARD REFERENCE-MARK DISK, STAMPED CANDY NO 2
 JV3589'1957 AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV3589
 JV3589                          STATION RECOVERY (2001)
 JV3589
 JV3589'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3589'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6960 ***********************************************************************
 HV6960  DESIGNATION -  CANOE
 HV6960  PID         -  HV6960
 HV6960  STATE/COUNTY-  MD/ST MARYS
 HV6960  COUNTRY     -  US
 HV6960  USGS QUAD   -  SAINT CLEMENTS ISLAND (2016)
 HV6960
 HV6960                         *CURRENT SURVEY CONTROL
 HV6960  ______________________________________________________________________
 HV6960* NAD 83(1993) POSITION- 38 14 42.64409(N) 076 43 58.03757(W)   ADJUSTED
 HV6960* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6960  ______________________________________________________________________
 HV6960  GEOID HEIGHT    -        -33.753 (meters)                     GEOID18
 HV6960  LAPLACE CORR    -         -2.40  (seconds)                    DEFLEC18
 HV6960  HORZ ORDER      -  THIRD
 HV6960
 HV6960.The horizontal coordinates were established by classical geodetic methods
 HV6960.and adjusted by the National Geodetic Survey in November 1994.
 HV6960
 HV6960.The orthometric height was scaled from a topographic map.
 HV6960
 HV6960.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6960.GEOID18 height accuracy estimate available here.
 HV6960
 HV6960.Click photographs - Photos may exist for this station.
 HV6960
 HV6960.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6960
 HV6960. The following values were computed from the NAD 83(1993) position.
 HV6960
 HV6960;                    North         East     Units Scale Factor Converg.
 HV6960;SPC MD       -    64,251.829   423,391.715   MT  1.00000999   +0 10 03.8
 HV6960;SPC MD       -   210,799.54  1,389,077.65   sFT  1.00000999   +0 10 03.8
 HV6960;SPC VA N     - 2,065,702.450 3,654,686.070   MT  0.99996937   +1 06 10.6
 HV6960;SPC VA N     - 6,777,225.45 11,990,415.88   sFT  0.99996937   +1 06 10.6
 HV6960;UTM  18      - 4,234,438.304   348,368.269   MT  0.99988317   -1 04 22.3
 HV6960
 HV6960!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6960!SPC MD       -   1.00000487  x   1.00000999  =   1.00001486
 HV6960!SPC VA N     -   1.00000487  x   0.99996937  =   0.99997424
 HV6960!UTM  18      -   1.00000487  x   0.99988317  =   0.99988804
 HV6960
 HV6960:                Primary Azimuth Mark                     Grid Az
 HV6960:SPC MD       -  BLAKISTON ISLAND LH 1860                 194 02 08.0
 HV6960:SPC VA N     -  BLAKISTON ISLAND LH 1860                 193 06 01.2
 HV6960:UTM  18      -  BLAKISTON ISLAND LH 1860                 195 16 34.1
 HV6960
 HV6960_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4836834438(NAD 83)
 HV6960
 HV6960|---------------------------------------------------------------------|
 HV6960| PID    Reference Object                     Distance      Geod. Az  |
 HV6960|                                                           dddmmss.s |
 HV6960| HV6945 BLAKISTON ISLAND LH 1860            APPROX. 4.3 KM 1941211.8 |
 HV6960| CX2168 CANOE RM                             53.280 METERS 34244     |
 HV6960|---------------------------------------------------------------------|
 HV6960
 HV6960                          SUPERSEDED SURVEY CONTROL
 HV6960
 HV6960  NAD 83(1991)-  38 14 42.64263(N)    076 43 58.04259(W) AD(       ) 3
 HV6960  NAD 83(1986)-  38 14 42.64373(N)    076 43 58.05387(W) AD(       ) 3
 HV6960  NAD 27      -  38 14 42.18900(N)    076 43 59.16200(W) AD(       ) 3
 HV6960  USSD        -  38 14 42.76900(N)    076 43 59.12800(W) AD(       ) 3
 HV6960
 HV6960.Superseded values are not recommended for survey control.
 HV6960
 HV6960.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6960.See file dsdata.pdf to determine how the superseded data were derived.
 HV6960
 HV6960_MARKER: N = NAIL
 HV6960_SETTING: 0 = UNSPECIFIED SETTING
 HV6960
 HV6960  HISTORY     - Date     Condition        Report By
 HV6960  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6960  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6960  HISTORY     - 1961     MARK NOT FOUND   USGS
 HV6960
 HV6960                          STATION DESCRIPTION
 HV6960
 HV6960'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6960'STATION IS ON THE W SHORE OF LOWER ST. CLEMENT BAY, OPPOSITE LONG
 HV6960'POINT, AND ABOUT 2 MILES N OF BLAKISTONE ISLAND, IN A CULTIVATED
 HV6960'FIELD, ABOUT 10 FEET ABOVE HIGH WATER, 4 YARDS NW OF EDGE OF BANK,
 HV6960'4 YARDS SW OF DITCH AND TREES IN HOLLOW, AND 60 YARDS S BY E OF A
 HV6960'LARGE APPLE TREE.
 HV6960'
 HV6960'STATION MARK IS NAIL IN STUB WITH TOP ABOUT 2 INCHES ABOVE
 HV6960'SURFACE OF GROUND.
 HV6960'
 HV6960'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6960'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6960'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6960'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6960'53.28 METERS (174.8 FEET) FROM STATION N 17 DEG 17 MIN W DISTANCES
 HV6960'AND BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 HV6960'FOLLOWS--CHIMNEY OF SMALL HOUSE, 1-1/8 MILES, S 33 DEG 52 MIN W.
 HV6960'NEAR END OF ROOF OF HOUSE, 1/2 MILE, S 69 DEG 7 MIN W.  NAIL IN
 HV6960'BLAZE IN 26-INCH PEAR TREE, 54.82 METERS (179.9 FEET), N 17 DEG 14
 HV6960'MIN W.  CHIMNEY OUTSIDE OF HOUSE, 1/2 MILE, N 15 DEG 43 MIN W.
 HV6960'LEFT CHIMNEY OF LARGE HOUSE, 3/8 MILE, N 13 DEG 6 MIN E.  CHIMNEY
 HV6960'OF HOUSE, 2-1/8 MILES, N 50 DEG 35 MIN E.  NEAR PEAK OF ROOF OF
 HV6960'BARN, 1-1/4 MILES, S 88 DEG 16 MIN E. NEAR CHIMNEY OF YATES HOUSE,
 HV6960'7/8 MILE, S 62 DEG 45 MIN E.
 HV6960
 HV6960                          STATION RECOVERY (1942)
 HV6960
 HV6960'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6960'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HV6960'
 HV6960'(1) THE STATION IS IN A PASTURE, INSTEAD OF A CULTIVATED FIELD.
 HV6960'
 HV6960'(2) ALL TREES GIVEN AS REFERENCES ARE DESTROYED.
 HV6960'
 HV6960'(3) THE MONUMENT PROJECTS ABOUT 8 INCHES ABOVE THE GROUND INSTEAD
 HV6960'OF 4 INCHES.
 HV6960'
 HV6960'THE STATION WAS THOROUGHLY SEARCHED FOR BUT NOT FOUND, DUE TO ITS
 HV6960'NATURE AND AGE, IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED
 HV6960'AS DESTROYED.
 HV6960'
 HV6960'THE REFERENCE MARK IS ON THE W SHORE OF LOWER ST. CLEMENT BAY
 HV6960'ABOUT 10 FEET ABOVE HIGH WATER IN A CLUMP OF BUSHES AND
 HV6960'HONEYSUCKLE VINES.  THE REFERENCE MARK IS A HOLE IN THE CENTER OF
 HV6960'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH
 HV6960'IS 8 INCHES SQUARE AND 2 FEET LONG WITH THE TOP PROJECTING ABOUT 8
 HV6960'INCHES ABOVE THE GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6960'COUNTERSUNK IN TOP OF THE MONUMENT.  THE MARK IS IN GOOD CONDITION.
 HV6960
 HV6960                          STATION RECOVERY (1961)
 HV6960
 HV6960'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1961
 HV6960'STATION NOT FOUND.  PROBABLY DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5500 ***********************************************************************
 JV5500  DESIGNATION -  CANTON USE 1915
 JV5500  PID         -  JV5500
 JV5500  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5500  COUNTRY     -  US
 JV5500  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5500
 JV5500                         *CURRENT SURVEY CONTROL
 JV5500  ______________________________________________________________________
 JV5500* NAD 83(1991) POSITION- 39 15 22.78134(N) 076 33 48.30381(W)   ADJUSTED
 JV5500* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5500  ______________________________________________________________________
 JV5500  GEOID HEIGHT    -        -32.897 (meters)                     GEOID18
 JV5500  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 JV5500  HORZ ORDER      -  THIRD
 JV5500
 JV5500.The horizontal coordinates were established by classical geodetic methods
 JV5500.and adjusted by the National Geodetic Survey in January 1992.
 JV5500
 JV5500.The orthometric height was scaled from a topographic map.
 JV5500
 JV5500.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5500.GEOID18 height accuracy estimate available here.
 JV5500
 JV5500.Click photographs - Photos may exist for this station.
 JV5500
 JV5500.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5500
 JV5500. The following values were computed from the NAD 83(1991) position.
 JV5500
 JV5500;                    North         East     Units Scale Factor Converg.
 JV5500;SPC MD       -   176,552.205   437,681.512   MT  0.99997185   +0 16 26.5
 JV5500;SPC MD       -   579,238.36  1,435,960.09   sFT  0.99997185   +0 16 26.5
 JV5500;UTM  18      - 4,346,386.965   365,107.365   MT  0.99982404   -0 59 22.1
 JV5500
 JV5500!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5500!SPC MD       -   1.00000504  x   0.99997185  =   0.99997689
 JV5500!UTM  18      -   1.00000504  x   0.99982404  =   0.99982908
 JV5500
 JV5500:                Primary Azimuth Mark                     Grid Az
 JV5500:SPC MD       -  F S ROYSTER 1915                         192 44 52.3
 JV5500:UTM  18      -  F S ROYSTER 1915                         194 00 40.9
 JV5500
 JV5500_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6510746386(NAD 83)
 JV5500
 JV5500|---------------------------------------------------------------------|
 JV5500| PID    Reference Object                     Distance      Geod. Az  |
 JV5500|                                                           dddmmss.s |
 JV5500| JV5512 WESTERN ELECTRIC CO CHIMNEY         APPROX. 1.7 KM 0731442.0 |
 JV5500| JV5507 CRANE                               APPROX. 2.2 KM 0982249.8 |
 JV5500| JV5679 BIT                                 APPROX. 2.5 KM 1193821.3 |
 JV5500| JV5694 SOLLERS POINT WATER TANK            APPROX. 5.1 KM 1233911.5 |
 JV5500| JV5730 SHELL OIL COMPANY TANK              APPROX. 2.2 KM 1812401.6 |
 JV5500| JV5726 F S ROYSTER 1915                    APPROX. 1.8 KM 1930118.8 |
 JV5500| JV5499 BROOKS HB 1915                        3.165 METERS 21214     |
 JV5500| JV5702 MARYLAND DRYDOCK CO TALL TANK       APPROX. 2.1 KM 2292418.2 |
 JV5500| JV5562 GAS AND ELECTRIC CO E STACK         APPROX. 3.6 KM 2865838.3 |
 JV5500| JV5561 GAS AND ELECTRIC CO W STACK         APPROX. 3.6 KM 2870454.7 |
 JV5500| JV5547 CHESAPEAKE PAPER BOARD CO STK       APPROX. 3.5 KM 2942752.0 |
 JV5500| JV5529 PENN RR CO TANK                     APPROX. 1.4 KM 3394423.5 |
 JV5500|---------------------------------------------------------------------|
 JV5500
 JV5500                          SUPERSEDED SURVEY CONTROL
 JV5500
 JV5500  NAD 83(1986)-  39 15 22.77763(N)    076 33 48.31293(W) AD(       ) 3
 JV5500  NAD 27      -  39 15 22.38900(N)    076 33 49.43900(W) AD(       ) 3
 JV5500  USSD        -  39 15 22.75500(N)    076 33 49.27400(W) AD(       ) 3
 JV5500
 JV5500.Superseded values are not recommended for survey control.
 JV5500
 JV5500.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5500.See file dsdata.pdf to determine how the superseded data were derived.
 JV5500
 JV5500
 JV5500  HISTORY     - Date     Condition        Report By
 JV5500  HISTORY     - 1915     MONUMENTED       CGS
 JV5500  HISTORY     - 1924     GOOD             CGS
 JV5500  HISTORY     - 1930     GOOD             CGS
 JV5500  HISTORY     - 1934     GOOD             CGS
 JV5500
 JV5500                          STATION DESCRIPTION
 JV5500
 JV5500'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5500'ON THE N SIDE OF PATAPSCO RIVER, ABOUT 5/8 MILE SE OF LAZARETTO
 JV5500'LIGHT, ON THE CONCRETE PIER OF THE CANTON COMPANY.  STATION IS
 JV5500'NEAR THE SW CORNER OF THE PIER, BEING 4.84 FEET NE OF CENTER OF
 JV5500'THE CURVATURE OF THE SW CORNER.  IT IS AT THE INTERSECTION OF TWO
 JV5500'EXPANSION JOINTS AND IS MARKED BY A STANDARD BRONZE STATION MARK
 JV5500'CEMENTED IN.
 JV5500
 JV5500                          STATION RECOVERY (1930)
 JV5500
 JV5500'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1930 (WHB)
 JV5500'THE STATION WAS FOUND AS DESCRIBED.  AN ADDITIONAL REFERENCE
 JV5500'MEASUREMENT WAS MADE.  THE STATION IS 3.95 METERS NE OF THE
 JV5500'OUTSIDE, CURVED, SW, EDGE OF THE CONCRETE BULKHEAD AT THE SW
 JV5500'CORNER OF THE PIER.
 JV5500
 JV5500                          STATION RECOVERY (1934)
 JV5500
 JV5500'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5500'STATION FOUND IN GOOD CONDITION.
 JV5500'
 JV5500'BRASS DISK SET IN CONCRETE OF CANTON RAILROAD PIER NO.3 ON THE
 JV5500'SW CORNER OF THE PIER.  STATION IS 29.3 FEET FROM SW CORNER OF
 JV5500'THE BUILDING AND 10.7 FEET N FROM THE MOST SOUTHERLY FACE OF THE
 JV5500'PIER.  IT IS ALSO 9.85 FEET NE FROM A LONE IRON CLEAT ON THE SW
 JV5500'CORNER OF THE DOCK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0334 ***********************************************************************
 HV0334  DESIGNATION -  CAP
 HV0334  PID         -  HV0334
 HV0334  STATE/COUNTY-  MD/CALVERT
 HV0334  COUNTRY     -  US
 HV0334  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0334
 HV0334                         *CURRENT SURVEY CONTROL
 HV0334  ______________________________________________________________________
 HV0334* NAD 83(1991) POSITION- 38 19 56.16886(N) 076 28 41.56848(W)   ADJUSTED
 HV0334* NAVD 88 ORTHO HEIGHT -     4.307 (meters)       14.13  (feet) ADJUSTED
 HV0334  ______________________________________________________________________
 HV0334  GEOID HEIGHT    -        -34.320 (meters)                     GEOID18
 HV0334  LAPLACE CORR    -         -4.95  (seconds)                    DEFLEC18
 HV0334  DYNAMIC HEIGHT  -          4.304 (meters)       14.12  (feet) COMP
 HV0334  MODELED GRAVITY -    980,021.6   (mgal)                       NAVD 88
 HV0334
 HV0334  HORZ ORDER      -  THIRD
 HV0334  VERT ORDER      -  FIRST     CLASS II
 HV0334
 HV0334.The horizontal coordinates were established by classical geodetic methods
 HV0334.and adjusted by the National Geodetic Survey in January 1992.
 HV0334
 HV0334.The orthometric height was determined by differential leveling and
 HV0334.adjusted by the NATIONAL GEODETIC SURVEY
 HV0334.in June 1991.
 HV0334
 HV0334.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0334.GEOID18 height accuracy estimate available here.
 HV0334
 HV0334.Click photographs - Photos may exist for this station.
 HV0334
 HV0334.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0334
 HV0334.The dynamic height is computed by dividing the NAVD 88
 HV0334.geopotential number by the normal gravity value computed on the
 HV0334.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0334.degrees latitude (g = 980.6199 gals.).
 HV0334
 HV0334.The modeled gravity was interpolated from observed gravity values.
 HV0334
 HV0334. The following values were computed from the NAD 83(1991) position.
 HV0334
 HV0334;                    North         East     Units Scale Factor Converg.
 HV0334;SPC MD       -    74,015.180   445,621.744   MT  0.99999454   +0 19 39.0
 HV0334;SPC MD       -   242,831.47  1,462,010.67   sFT  0.99999454   +0 19 39.0
 HV0334;UTM  18      - 4,243,715.832   370,801.227   MT  0.99980557   -0 55 01.0
 HV0334
 HV0334!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0334!SPC MD       -   1.00000471  x   0.99999454  =   0.99999925
 HV0334!UTM  18      -   1.00000471  x   0.99980557  =   0.99981028
 HV0334
 HV0334:                Primary Azimuth Mark                     Grid Az
 HV0334:SPC MD       -  LEWIS                                    165 45 30.6
 HV0334:UTM  18      -  LEWIS                                    167 00 10.6
 HV0334
 HV0334_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7080143715(NAD 83)
 HV0334
 HV0334|---------------------------------------------------------------------|
 HV0334| PID    Reference Object                     Distance      Geod. Az  |
 HV0334|                                                           dddmmss.s |
 HV0334| CX2171 CAP RM 3                             12.174 METERS 06011     |
 HV0334| HV6690 SOLOMONS OUR LADY STAR CATH CH      APPROX. 1.7 KM 1172857.6 |
 HV0334| HV6711 SOLOMONS ISLAND ME CHURCH           APPROX. 1.9 KM 1222338.4 |
 HV0334| HV6722 SOLOMONS ST PETERS EPIS CHURCH      APPROX. 2.1 KM 1253301.1 |
 HV0334| CX2169 CAP RM 1                             19.242 METERS 15240     |
 HV0334| HV6719 LEWIS                               APPROX. 1.2 KM 1660509.6 |
 HV0334| CX2170 CAP RM 2                             17.830 METERS 21659     |
 HV0334| HV6691 POINT PATIENCE LIGHTHOUSE           APPROX. 0.6 KM 2335602.0 |
 HV0334|---------------------------------------------------------------------|
 HV0334
 HV0334                          SUPERSEDED SURVEY CONTROL
 HV0334
 HV0334  NAD 83(1986)-  38 19 56.16810(N)    076 28 41.58241(W) AD(       ) 3
 HV0334  NAD 27      -  38 19 55.71500(N)    076 28 42.73400(W) AD(       ) 3
 HV0334  NGVD 29 (11/26/84)    4.553  (m)           14.94   (f) ADJUSTED    1 2
 HV0334
 HV0334.Superseded values are not recommended for survey control.
 HV0334
 HV0334.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0334.See file dsdata.pdf to determine how the superseded data were derived.
 HV0334
 HV0334_MARKER: DS = TRIANGULATION STATION DISK
 HV0334_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0334_STAMPING: CAP 1943
 HV0334_MARK LOGO: CGS
 HV0334_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0334+STABILITY: SURFACE MOTION
 HV0334
 HV0334  HISTORY     - Date     Condition        Report By
 HV0334  HISTORY     - 1943     MONUMENTED       CGS
 HV0334  HISTORY     - 1960     GOOD             CGS
 HV0334  HISTORY     - 1971     GOOD             NGS
 HV0334  HISTORY     - 1971     GOOD             NGS
 HV0334  HISTORY     - 1975     GOOD             NGS
 HV0334  HISTORY     - 1981     GOOD             MDDNR
 HV0334
 HV0334                          STATION DESCRIPTION
 HV0334
 HV0334'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (BHR)
 HV0334'STATION IS ON THE N SHORE OF THE PATUXENT RIVER, APPROXIMATELY
 HV0334'650 YARDS NE OF THE EXTREME END OF POINT PATIENCE, ON THE NAVAL
 HV0334'MINE WARFARE TEST STATION, NE OF A RED BRICK HOUSE, ON RANGE WITH
 HV0334'THE BOILER HOUSE CHIMNEY FOR MINE ASSEMBLY AND THE BOILER HOUSE
 HV0334'CHIMNEY JUST E OF THE CARPENTER SHOP.  IT IS 88 FEET SE OF THE
 HV0334'SE CORNER OF THE MINE ASSEMBLY BUILDING, 115 FEET SW OF THE S
 HV0334'FACE OF THE BOILER HOUSE FOR MINE ASSEMBLY, AND APPROXIMATELY
 HV0334'51 FEET S OF THE CENTER LINE OF THE ROAD LEADING TO THE BOILER
 HV0334'HOUSE.  MARK IS 2 INCHES ABOVE THE GROUND.
 HV0334'
 HV0334'STATION AND REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE AT
 HV0334'THE CENTERS OF THE TOPS OF TILES WHICH ARE SET IN BLOCKS OF
 HV0334'CONCRETE.
 HV0334'
 HV0334'REFERENCE MARK 1 IS SE OF THE STATION AND 63 FEET FROM THE
 HV0334'STATION.  MARK IS 4 INCHES ABOVE THE GROUND.
 HV0334'
 HV0334'REFERENCE MARK 2 IS 58.4 FEET FROM THE STATION AND IN A SW
 HV0334'DIRECTION.  MARK IS 2 INCHES ABOVE THE GROUND.
 HV0334
 HV0334                          STATION RECOVERY (1960)
 HV0334
 HV0334'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV0334'STATION RECOVERED IN GOOD CONDITION.  NEITHER REFERENCE MARK
 HV0334'COULD BE FOUND AFTER A THOROUGH SEARCH AND ARE BELIEVED TO HAVE
 HV0334'BEEN DESTROYED.
 HV0334'
 HV0334'THE PUBLISHED DESCRIPTION IS ADEQUATE WITH THE FOLLOWING
 HV0334'ADDITIONS--STATION IS 138 FT. S OF A BRICK CHIMNEY OF OLD BOILER
 HV0334'HOUSE, 40.8 FT. SW OF NW CORNER AND 37.1 FT. NW OF THE SW CORNER
 HV0334'OF NISSEN HUT AND PROJECTS 1 INCH.
 HV0334
 HV0334                          STATION RECOVERY (1971)
 HV0334
 HV0334'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV0334'THE STATION MARK WAS RECOVERED.  REFERENCE MARKS 1 AND 2 WERE
 HV0334'NOT RECOVERED THIS DATE.  THEY WERE ALSO REPORTED AS NOT BEING
 HV0334'RECOVERED BY L.F.B. IN 1960 AND PROBABLY DESTROYED.
 HV0334'
 HV0334'TO REACH, GO ABOUT 0.75 MILE NORTH ALONG STATE HIGHWAY 2 AND 4
 HV0334'FROM THE METHODIST CHURCH AT SOLOMONS, THENCE ABOUT 0.8 MILE WEST
 HV0334'AND SOUTH ALONG ROADS THROUGH U.S. NAVAL BASE, 170 YARDS EAST OF
 HV0334'THE EAST CORNER OF A 2-STORY BRICK BUILDING, 251 FEET SOUTHEAST
 HV0334'OF THE CENTER LINE OF A BLACK TOP ROAD, 115 FEET SOUTHWEST OF
 HV0334'THE WEST CORNER OF A BRICK BUILDING WHICH FORMERLY HOUSED THE
 HV0334'BOILERS FOR THE NAVY BASE, 134 FEET NORTH OF THE NORTH BANK OF
 HV0334'PATUXENT RIVER, 0.5 FOOT NORTHWEST OF A METAL WITNESS POST AND
 HV0334'SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 HV0334'
 HV0334'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV0334'1.55 MILES NW OF SOLOMONS.
 HV0334
 HV0334                          STATION RECOVERY (1971)
 HV0334
 HV0334'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0334'1.6 MI NW FROM SOLOMONS.
 HV0334'ABOUT 0.75 MILE NORTH ALONG STATE HIGHWAY 4 AND 2 FROM THE
 HV0334'METHODIST CHURCH AT SOLOMONS, THENCE 0.8 MILE WEST AND SOUTH
 HV0334'ALONG ROADS THRU THE NAVAL BASE, 170 YARDS EAST OF THE EAST
 HV0334'CORNER OF A 2-STORY BRICK BUILDING, 251 FEET SOUTHEAST OF THE
 HV0334'CENTER LINE OF A SOUTHWEST-NORTHEAST BLACK TOP ROAD THRU THE
 HV0334'NAVAL STATION, 115 FEET SOUTHWEST OF THE WEST CORNER OF A BRICK
 HV0334'BUILDING WHICH FORMERLY HOUSED THE BOILERS FOR THE BASE, 134 FEET
 HV0334'NORTH OF THE NORTH BANK OF THE PATUXENT RIVER, 37.7 FEET NORTH OF
 HV0334'THE NORTHWEST CORNER OF THE CONCRETE FLOORING FOR A BUILDING WHICH
 HV0334'HAS BEEN RAZED, 0.5 FOOT NORTHWEST OF A METAL WITNESS POST, SET
 HV0334'IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 HV0334
 HV0334                          STATION RECOVERY (1975)
 HV0334
 HV0334'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HV0334'THE STATION MARK AND REFERENCE MARK 1 WERE RECOVERED AND FOUND
 HV0334'IN GOOD CONDITION.  REFERENCE MARK 2 WAS FOUND TO BE DESTROYED.  A
 HV0334'NEW REFERENCE MARK 3 WAS ESTABLISHED AT THIS DATE.  THE DISTANCE
 HV0334'TO REFERENCE MARK 1 WAS WITHIN CLOSE AGREEMENT WITH THE 1943
 HV0334'OBSERVATION.  A U.S. NAVY STATION DISK WAS FOUND 100 YARDS
 HV0334'NORTHWEST OF THE STATION AND IT WAS INTERSECTED AT THIS DATE.
 HV0334'NO AZIMUTH MARK WAS EVER SET AT THIS STATION.
 HV0334'
 HV0334'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HV0334'
 HV0334'THE STATION IS LOCATED ON THE NORTHWEST PART OF THE U.S. NAVAL
 HV0334'ORDNANCE LABORATORY.  IT IS ABOUT 200 YARDS EAST OF THE PATUXENT
 HV0334'RIVER AND ABOUT 2 MILES NORTHWEST OF SOLOMONS ISLAND.  THE
 HV0334'PROPERTY IS U.S. GOVERNMENT OWNED.
 HV0334'
 HV0334'TO REACH THE STATION FROM THE MAIN ENTRANCE TO THE U.S. NAVAL
 HV0334'ORDNANCE LABORATORY, GO NORTHWEST ON NAVY ROAD FOR 0.45 MILE TO
 HV0334'A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTHWEST ON A PAVED STREET
 HV0334'FOR 0.15 MILE TO A CROSS ROADS AT BUILDING NUMBER 14 ON THE
 HV0334'LEFT.  TURN RIGHT AND GO NORTHWEST ON A PAVED ROAD FOR 0.1 MILE
 HV0334'TO A CROSS ROADS.  TURN LEFT AND GO SOUTHWEST AND WEST ON A
 HV0334'PAVED ROAD FOR 0.2 MILE TO SEVERAL LARGE POWER LINE POLES ON
 HV0334'THE LEFT AND THE STATION ON THE LEFT.
 HV0334'
 HV0334'THE STATION MARK IS A STANDARD DISK STAMPED CAP 1943, SET IN
 HV0334'THE TOP OF A 6-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH
 HV0334'THE SURFACE.  IT IS 150 YARDS NORTHEAST OF THE MOST SOUTHWEST
 HV0334'POINT OF LAND, 50 YARDS NORTH OF THE SOUTH SHORE OF A BAY, 38
 HV0334'FEET NORTH OF THE NORTHWEST CORNER OF A LARGE CONCRETE SLAB, 36
 HV0334'FEET SOUTHEAST OF POWER POLE NUMBERED 1 AND 0.5 FOOT NORTH OF A
 HV0334'WITNESS POST.  (NOTE 1B 7A)
 HV0334'
 HV0334'REFERENCE MARK 1 IS A STANDARD DISK STAMPED NO 1 1943, SET IN
 HV0334'THE TOP OF A 4-INCH ROUND TILE PIPE WHICH IS SET IN A MASS OF
 HV0334'CONCRETE AND IT IS FLUSH WITH THE SURFACE.  IT IS 63 FEET SOUTH
 HV0334'OF THE WITNESS POST, 32.3 FEET EAST OF THE SOUTHEAST CORNER OF
 HV0334'THE CONCRETE SLAB AND 6 FEET SOUTH OF THE MOST SOUTH EDGE OF THE
 HV0334'CONCRETE SLAB.  (DESCRIBED)
 HV0334'
 HV0334'REFERENCE MARK 3 IS A STANDARD DISK STAMPED CAP 1943 NO 3 1975,
 HV0334'SET IN A DRILL HOLE IN THE EAST EDGE OF THE LARGE CONCRETE SLAB.  IT
 HV0334'IS 64 FEET SOUTHEAST OF THE POWER POLE NUMBERED 1, 40 FEET EAST
 HV0334'OF THE WITNESS POST, 11.9 FEET SOUTH OF THE NORTHEAST CORNER OF
 HV0334'THE CONCRETE SLAB AND 0.7 FOOT WEST OF THE MOST EAST EDGE OF THE
 HV0334'CONCRETE SLAB.  (DESCRIBED)
 HV0334'
 HV0334'ABE 1959 (USN) IS A U.S. NAVY STATION DISK SET IN A DRILL HOLE
 HV0334'IN A CONCRETE SLAB UNDER A U.S. NAVY OBSERVATION TOWER.  IT IS
 HV0334'THE CENTER MARK FOR THE INSTRUMENT PLATFORM ATOP THE TOWER.  IT
 HV0334'IS 100 YARDS NORTHWEST OF THE STATION, 50 YARDS SOUTHEAST OF THE
 HV0334'SHORELINE AND INSIDE A WIRE FENCE.
 HV0334'
 HV0334'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV0334'AT THE U.S. NAVAL ORDNANCE LABORATORY.
 HV0334
 HV0334                          STATION RECOVERY (1981)
 HV0334
 HV0334'RECOVERY NOTE BY MD DEPT OF NAT RES 1981 (LW)
 HV0334'CAP 1943 GOOD - FOUND AS DESCRIBED.
 HV0334'ACCESS CAN BEGAINED AT COMMANDING OFFICERS OFFICE OF MINE WARFARE
 HV0334'LABORATORY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4751 ***********************************************************************
 AB4751  DESIGNATION -  CAPE
 AB4751  PID         -  AB4751
 AB4751  STATE/COUNTY-  MD/CARROLL
 AB4751  COUNTRY     -  US
 AB4751  USGS QUAD   -  MANCHESTER (2016)
 AB4751
 AB4751                         *CURRENT SURVEY CONTROL
 AB4751  ______________________________________________________________________
 AB4751* NAD 83(2011) POSITION- 39 37 35.93643(N) 076 53 30.80763(W)   ADJUSTED
 AB4751* NAD 83(2011) ELLIP HT-   199.298 (meters)        (06/27/12)   ADJUSTED
 AB4751* NAD 83(2011) EPOCH   -  2010.00
 AB4751* NAVD 88 ORTHO HEIGHT -   231.5   (meters)      760.    (feet) GPS OBS
 AB4751  ______________________________________________________________________
 AB4751  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4751  GEOID HEIGHT    -        -32.242 (meters)                     GEOID99
 AB4751  GEOID HEIGHT    -        -32.229 (meters)                     GEOID18
 AB4751  NAD 83(2011) X  -  1,115,667.292 (meters)                     COMP
 AB4751  NAD 83(2011) Y  - -4,791,222.720 (meters)                     COMP
 AB4751  NAD 83(2011) Z  -  4,046,270.829 (meters)                     COMP
 AB4751  LAPLACE CORR    -          1.47  (seconds)                    DEFLEC18
 AB4751
 AB4751  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4751  Standards:
 AB4751         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4751            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4751  -------------------------------------------------------------------
 AB4751  NETWORK    1.13   1.65           0.42   0.50   0.84     -0.02253323
 AB4751  -------------------------------------------------------------------
 AB4751  Click here for local accuracies and other accuracy information.
 AB4751
 AB4751.The horizontal coordinates were established by GPS observations
 AB4751.and adjusted by the National Geodetic Survey in June 2012.
 AB4751
 AB4751.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4751.been affixed to the stable North American tectonic plate. See 
 AB4751.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4751
 AB4751.The horizontal coordinates are valid at the epoch date displayed above
 AB4751.which is a decimal equivalence of Year/Month/Day.
 AB4751
 AB4751.The orthometric height was determined by GPS observations and a
 AB4751.high-resolution geoid model.
 AB4751
 AB4751.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4751.GEOID18 height accuracy estimate available here.
 AB4751
 AB4751.Click photographs - Photos may exist for this station.
 AB4751
 AB4751.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4751
 AB4751.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4751
 AB4751.The ellipsoidal height was determined by GPS observations
 AB4751.and is referenced to NAD 83.
 AB4751
 AB4751. The following values were computed from the NAD 83(2011) position.
 AB4751
 AB4751;                    North         East     Units Scale Factor Converg.
 AB4751;SPC MD       -   217,582.081   409,282.254   MT  1.00003568   +0 04 04.3
 AB4751;SPC MD       -   713,850.54  1,342,786.86   sFT  1.00003568   +0 04 04.3
 AB4751;UTM  18      - 4,388,030.328   337,627.119   MT  0.99992460   -1 12 24.8
 AB4751
 AB4751!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4751!SPC MD       -   0.99996873  x   1.00003568  =   1.00000441
 AB4751!UTM  18      -   0.99996873  x   0.99992460  =   0.99989334
 AB4751
 AB4751:                Primary Azimuth Mark                     Grid Az
 AB4751:SPC MD       -  CAPE AZ MK                               180 23 06.3
 AB4751:UTM  18      -  CAPE AZ MK                               181 39 35.4
 AB4751
 AB4751_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3762788030(NAD 83)
 AB4751
 AB4751|---------------------------------------------------------------------|
 AB4751| PID    Reference Object                     Distance      Geod. Az  |
 AB4751|                                                           dddmmss.s |
 AB4751| AB4797 CAPE AZ MK                          462.166 METERS 1802710.6 |
 AB4751|---------------------------------------------------------------------|
 AB4751
 AB4751                          SUPERSEDED SURVEY CONTROL
 AB4751
 AB4751  NAD 83(2007)-  39 37 35.93663(N)    076 53 30.80840(W) AD(2002.00) 0
 AB4751  ELLIP H (02/10/07)  199.319  (m)                       GP(2002.00)    
 AB4751  ELLIP H (08/30/02)  199.313  (m)                       GP(       ) 4 2
 AB4751  NAD 83(1991)-  39 37 35.93646(N)    076 53 30.80872(W) AD(       ) 1
 AB4751  ELLIP H (07/03/96)  199.229  (m)                       GP(       ) 1 1
 AB4751  NAVD 88 (07/03/96)  231.5    (m)  GEOID93  model used  GPS OBS        
 AB4751
 AB4751.Superseded values are not recommended for survey control.
 AB4751
 AB4751.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4751.See file dsdata.pdf to determine how the superseded data were derived.
 AB4751
 AB4751_MARKER: DD = SURVEY DISK
 AB4751_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4751_STAMPING: CAPE 1995
 AB4751_MARK LOGO: MD-013
 AB4751_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4751_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4751+STABILITY: SURFACE MOTION
 AB4751_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4751+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4751
 AB4751  HISTORY     - Date     Condition        Report By
 AB4751  HISTORY     - 1995     MONUMENTED       MD-013
 AB4751
 AB4751                          STATION DESCRIPTION
 AB4751
 AB4751'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4751'STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) SOUTH OF MANCHESTER AND ABOUT
 AB4751'2.5 MI (4.0 KM) NORTHWEST OF HAMPSTEAD. TO REACH STATION FROM THE
 AB4751'INTERSECTION OF MD ROUTE 30 (HANOVER PIKE) AND MD ROUTE 482 (HAMPSTEAD
 AB4751'MEXICO ROAD) AT HAMPSTEAD, GO WEST ON MD ROUTE 482 FOR 2.8 MI (4.5 KM)
 AB4751'TO THE INTERSECTION WITH CAPE HORN ROAD. TURN RIGHT ON CAPE HORN ROAD
 AB4751'AND GO NORTH THROUGH SNYDERSBURG FOR 1.7 MI (2.7 KM) TO THE STATION ON
 AB4751'THE RIGHT. STATION IS ABOUT 200 FT (61.0 M) SOUTHEAST OF THE
 AB4751'INTERSECTION OF CAPE HORN ROAD AND HARVEY GUMMEL ROAD. STATION MARK IS
 AB4751'SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONMENT SET FLUSH WITH THE
 AB4751'GROUND. IT IS 18.3 FT (5.6 M) NORTHEAST OF THE CENTERLINE OF THE ROAD,
 AB4751'9.0 FT (2.7 M) SOUTHWEST OF A WIRE FENCE, 85.0 FT (25.9 M) NORTHWEST
 AB4751'OF POWER POLE NO.88495 AND 92 FT (28.0 M) NORTH OF TELEPHONE POLE
 AB4751'NO.11
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4797 ***********************************************************************
 AB4797  DESIGNATION -  CAPE AZ MK
 AB4797  PID         -  AB4797
 AB4797  STATE/COUNTY-  MD/CARROLL
 AB4797  COUNTRY     -  US
 AB4797  USGS QUAD   -  WESTMINSTER (2016)
 AB4797
 AB4797                         *CURRENT SURVEY CONTROL
 AB4797  ______________________________________________________________________
 AB4797* NAD 83(2011) POSITION- 39 37 20.95142(N) 076 53 30.96081(W)   ADJUSTED
 AB4797* NAD 83(2011) ELLIP HT-   205.396 (meters)        (06/27/12)   ADJUSTED
 AB4797* NAD 83(2011) EPOCH   -  2010.00
 AB4797* NAVD 88 ORTHO HEIGHT -   237.6   (meters)      780.    (feet) GPS OBS
 AB4797  ______________________________________________________________________
 AB4797  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4797  GEOID HEIGHT    -        -32.233 (meters)                     GEOID99
 AB4797  GEOID HEIGHT    -        -32.220 (meters)                     GEOID18
 AB4797  NAD 83(2011) X  -  1,115,731.645 (meters)                     COMP
 AB4797  NAD 83(2011) Y  - -4,791,515.192 (meters)                     COMP
 AB4797  NAD 83(2011) Z  -  4,045,918.739 (meters)                     COMP
 AB4797  LAPLACE CORR    -          1.37  (seconds)                    DEFLEC18
 AB4797
 AB4797  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4797  Standards:
 AB4797         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4797            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4797  -------------------------------------------------------------------
 AB4797  NETWORK    1.34   2.27           0.50   0.59   1.16     -0.02064830
 AB4797  -------------------------------------------------------------------
 AB4797  Click here for local accuracies and other accuracy information.
 AB4797
 AB4797.The horizontal coordinates were established by GPS observations
 AB4797.and adjusted by the National Geodetic Survey in June 2012.
 AB4797
 AB4797.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4797.been affixed to the stable North American tectonic plate. See 
 AB4797.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4797
 AB4797.The horizontal coordinates are valid at the epoch date displayed above
 AB4797.which is a decimal equivalence of Year/Month/Day.
 AB4797
 AB4797.The orthometric height was determined by GPS observations and a
 AB4797.high-resolution geoid model.
 AB4797
 AB4797.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4797.GEOID18 height accuracy estimate available here.
 AB4797
 AB4797.Click photographs - Photos may exist for this station.
 AB4797
 AB4797.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4797
 AB4797.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4797
 AB4797.The ellipsoidal height was determined by GPS observations
 AB4797.and is referenced to NAD 83.
 AB4797
 AB4797. The following values were computed from the NAD 83(2011) position.
 AB4797
 AB4797;                    North         East     Units Scale Factor Converg.
 AB4797;SPC MD       -   217,119.909   409,279.148   MT  1.00003473   +0 04 04.2
 AB4797;SPC MD       -   712,334.23  1,342,776.67   sFT  1.00003473   +0 04 04.2
 AB4797;UTM  18      - 4,387,568.390   337,613.734   MT  0.99992466   -1 12 24.5
 AB4797
 AB4797!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4797!SPC MD       -   0.99996778  x   1.00003473  =   1.00000251
 AB4797!UTM  18      -   0.99996778  x   0.99992466  =   0.99989244
 AB4797
 AB4797:                Primary Azimuth Mark                     Grid Az
 AB4797:SPC MD       -  CAPE                                     000 23 06.2
 AB4797:UTM  18      -  CAPE                                     001 39 34.9
 AB4797
 AB4797_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3761387568(NAD 83)
 AB4797
 AB4797|---------------------------------------------------------------------|
 AB4797| PID    Reference Object                     Distance      Geod. Az  |
 AB4797|                                                           dddmmss.s |
 AB4797| AB4751 CAPE                                462.166 METERS 0002710.4 |
 AB4797|---------------------------------------------------------------------|
 AB4797
 AB4797                          SUPERSEDED SURVEY CONTROL
 AB4797
 AB4797  NAD 83(2007)-  39 37 20.95163(N)    076 53 30.96159(W) AD(2002.00) 0
 AB4797  ELLIP H (02/10/07)  205.417  (m)                       GP(2002.00)    
 AB4797  ELLIP H (08/30/02)  205.412  (m)                       GP(       ) 4 2
 AB4797  NAD 83(1991)-  39 37 20.95141(N)    076 53 30.96195(W) AD(       ) 1
 AB4797  ELLIP H (07/03/96)  205.329  (m)                       GP(       ) 1 1
 AB4797  NAVD 88 (07/03/96)  237.6    (m)  GEOID93  model used  GPS OBS        
 AB4797
 AB4797.Superseded values are not recommended for survey control.
 AB4797
 AB4797.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4797.See file dsdata.pdf to determine how the superseded data were derived.
 AB4797
 AB4797_MARKER: DD = SURVEY DISK
 AB4797_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4797_STAMPING: CAPE AZI 1995
 AB4797_MARK LOGO: MD-013
 AB4797_PROJECTION: FLUSH
 AB4797_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4797_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4797+STABILITY: SURFACE MOTION
 AB4797_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4797+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4797
 AB4797  HISTORY     - Date     Condition        Report By
 AB4797  HISTORY     - 1995     MONUMENTED       MD-013
 AB4797
 AB4797                          STATION DESCRIPTION
 AB4797
 AB4797'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4797'STATION IS LOCATED ABOUT 3.0 MI (4.8 KM) SOUTH OF MANCHESTER AND ABOUT
 AB4797'2.5 MI (4.0 KM) NORTHWEST OF HAMPSTEAD. TO REACH STATION FROM THE
 AB4797'INTERSECTION OF MD ROUTE 30 (HANOVER PIKE) AND MD ROUTE 482 (HAMPSTEAD
 AB4797'MEXICO ROAD) AT HAMPSTEAD, GO WEST ON MD ROUTE 482 FOR 2.8 MI (4.5 KM)
 AB4797'TO THE INTERSECTION WITH CAPE HORN ROAD. TURN RIGHT ON CAPE HORN ROAD
 AB4797'AND GO NORTH THROUGH SNYDERSBURG FOR 1.1 MI (1.8 KM) TO A 90 DEGREE
 AB4797'BEND TO THE LEFT AND THE STATION ON THE LEFT. STATION IS ALSO 0.3 MI
 AB4797'(0.5 KM) NORTH OF THE INTERSECTION OF CAPE HORN ROAD AND SNYDERSBURG
 AB4797'ROAD AT SNYDERSBURG. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4797'DIAMETER CONCRETE MONMENT SET FLUSH WITH THE GROUND. IT IS 23.9 FT
 AB4797'(7.3 M) NORTH OF THE CENTERLINE OF THE ROAD, 5.2 FT (1.6 M) SOUTH OF A
 AB4797'WIRE FENCE, 83.3 FT (25.4 M) WEST OF TELEPHONE POLE NO.6 AND 107.7 FT
 AB4797'(32.8 M) NORTHWEST OF TELEPHONE GUY POLE NO.6.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5406 ***********************************************************************
 JV5406  DESIGNATION -  CAR
 JV5406  PID         -  JV5406
 JV5406  STATE/COUNTY-  MD/BALTIMORE
 JV5406  COUNTRY     -  US
 JV5406  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5406
 JV5406                         *CURRENT SURVEY CONTROL
 JV5406  ______________________________________________________________________
 JV5406* NAD 83(1991) POSITION- 39 18 09.65425(N) 076 29 13.44883(W)   ADJUSTED
 JV5406* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5406  ______________________________________________________________________
 JV5406  GEOID HEIGHT    -        -32.962 (meters)                     GEOID18
 JV5406  LAPLACE CORR    -         -2.70  (seconds)                    DEFLEC18
 JV5406  HORZ ORDER      -  SECOND
 JV5406
 JV5406.The horizontal coordinates were established by classical geodetic methods
 JV5406.and adjusted by the National Geodetic Survey in January 1992.
 JV5406
 JV5406.The orthometric height was scaled from a topographic map.
 JV5406
 JV5406.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5406.GEOID18 height accuracy estimate available here.
 JV5406
 JV5406.Click photographs - Photos may exist for this station.
 JV5406
 JV5406.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5406
 JV5406. The following values were computed from the NAD 83(1991) position.
 JV5406
 JV5406;                    North         East     Units Scale Factor Converg.
 JV5406;SPC MD       -   181,732.477   444,242.198   MT  0.99997755   +0 19 19.0
 JV5406;SPC MD       -   596,233.97  1,457,484.61   sFT  0.99997755   +0 19 19.0
 JV5406;UTM  18      - 4,351,420.469   371,779.627   MT  0.99980243   -0 56 31.4
 JV5406
 JV5406!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5406!SPC MD       -   1.00000505  x   0.99997755  =   0.99998260
 JV5406!UTM  18      -   1.00000505  x   0.99980243  =   0.99980748
 JV5406
 JV5406:                Primary Azimuth Mark                     Grid Az
 JV5406:SPC MD       -  ESSEX                                    104 19 43.5
 JV5406:UTM  18      -  ESSEX                                    105 35 33.9
 JV5406
 JV5406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7177951420(NAD 83)
 JV5406
 JV5406|---------------------------------------------------------------------|
 JV5406| PID    Reference Object                     Distance      Geod. Az  |
 JV5406|                                                           dddmmss.s |
 JV5406| CB1040 CAR RM 1                             21.750 METERS 06211     |
 JV5406| JV5379 ESSEX                               APPROX. 1.0 KM 1043902.5 |
 JV5406| JV5376 LINE                                362.006 METERS 23408     |
 JV5406|---------------------------------------------------------------------|
 JV5406
 JV5406                          SUPERSEDED SURVEY CONTROL
 JV5406
 JV5406  NAD 83(1986)-  39 18 09.65009(N)    076 29 13.45739(W) AD(       ) 2
 JV5406  NAD 27      -  39 18 09.26500(N)    076 29 14.59400(W) AD(       ) 2
 JV5406
 JV5406.Superseded values are not recommended for survey control.
 JV5406
 JV5406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5406.See file dsdata.pdf to determine how the superseded data were derived.
 JV5406
 JV5406_MARKER: DS = TRIANGULATION STATION DISK
 JV5406_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5406_STAMPING: CAR 1934
 JV5406_MARK LOGO: CGS
 JV5406_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5406+STABILITY: SURFACE MOTION
 JV5406
 JV5406  HISTORY     - Date     Condition        Report By
 JV5406  HISTORY     - 1934     MONUMENTED       CGS
 JV5406  HISTORY     - 1974     MARK NOT FOUND   MDDNR
 JV5406  HISTORY     - 19961006 MARK NOT FOUND   USPSQD
 JV5406
 JV5406                          STATION DESCRIPTION
 JV5406
 JV5406'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5406'ON EASTERN SHORE OF BACK RIVER, AT E END OF EASTERN AVENUE BRIDGE.
 JV5406'STATION IS 10 FEET E OF END OF BRIDGE, 20 FEET FROM CENTER LINE OF
 JV5406'HIGHWAY, AND 6 FEET N OF CENTER LINE OF ABANDONED ELECTRIC RAILWAY.
 JV5406'
 JV5406'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5406'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5406'
 JV5406'REFERENCE MARK IS BETWEEN THE ELECTRIC TRACKS, 85 FEET E OF BRIDGE.
 JV5406
 JV5406                          STATION RECOVERY (1974)
 JV5406
 JV5406'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 JV5406'CAR 1934 NOT RECOVD.
 JV5406'
 JV5406'CAR NO1 1934 NOT RECOVD.
 JV5406'
 JV5406'AREA HAS LARGE OUTDOOR AD. SIGN STA. MOST LIKELY DESTYD. WHEN SIGN
 JV5406'WAS ERECTED.
 JV5406
 JV5406                          STATION RECOVERY (1996)
 JV5406
 JV5406'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV5406'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6210 ***********************************************************************
 DN6210  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6210  DESIGNATION -  CARA
 DN6210  PID         -  DN6210
 DN6210  STATE/COUNTY-  MD/CECIL
 DN6210  COUNTRY     -  US
 DN6210  USGS QUAD   -  NORTH EAST (2016)
 DN6210
 DN6210                         *CURRENT SURVEY CONTROL
 DN6210  ______________________________________________________________________
 DN6210* NAD 83(2011) POSITION- 39 32 38.03683(N) 075 56 54.80017(W)   ADJUSTED
 DN6210* NAD 83(2011) ELLIP HT-    -6.545 (meters)        (06/27/12)   ADJUSTED
 DN6210* NAD 83(2011) EPOCH   -  2010.00
 DN6210* NAVD 88 ORTHO HEIGHT -    26.69  (meters)       87.6   (feet) GPS OBS
 DN6210  ______________________________________________________________________
 DN6210  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6210  GEOID HEIGHT    -        -33.218 (meters)                     GEOID03
 DN6210  GEOID HEIGHT    -        -33.245 (meters)                     GEOID18
 DN6210  NAD 83(2011) X  -  1,195,779.620 (meters)                     COMP
 DN6210  NAD 83(2011) Y  - -4,777,730.983 (meters)                     COMP
 DN6210  NAD 83(2011) Z  -  4,039,059.001 (meters)                     COMP
 DN6210  LAPLACE CORR    -          0.14  (seconds)                    DEFLEC18
 DN6210
 DN6210  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6210  Standards:
 DN6210         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6210            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6210  -------------------------------------------------------------------
 DN6210  NETWORK    0.54   1.33           0.24   0.20   0.68      0.04812387
 DN6210  -------------------------------------------------------------------
 DN6210  Click here for local accuracies and other accuracy information.
 DN6210
 DN6210.The horizontal coordinates were established by GPS observations
 DN6210.and adjusted by the National Geodetic Survey in June 2012.
 DN6210
 DN6210.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6210.been affixed to the stable North American tectonic plate. See 
 DN6210.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6210
 DN6210.The horizontal coordinates are valid at the epoch date displayed above
 DN6210.which is a decimal equivalence of Year/Month/Day.
 DN6210
 DN6210.The orthometric height was determined by GPS observations and a
 DN6210.high-resolution geoid model using precise GPS observation and
 DN6210.processing techniques.
 DN6210
 DN6210.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6210.GEOID18 height accuracy estimate available here.
 DN6210
 DN6210.Click photographs - Photos may exist for this station.
 DN6210
 DN6210.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6210
 DN6210.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6210
 DN6210.The ellipsoidal height was determined by GPS observations
 DN6210.and is referenced to NAD 83.
 DN6210
 DN6210. The following values were computed from the NAD 83(2011) position.
 DN6210
 DN6210;                    North         East     Units Scale Factor Converg.
 DN6210;SPC MD       -   208,909.398   490,381.017   MT  1.00001778   +0 39 35.7
 DN6210;SPC MD       -   685,396.92  1,608,858.39   sFT  1.00001778   +0 39 35.7
 DN6210;UTM  18      - 4,377,566.046   418,494.740   MT  0.99968179   -0 36 14.2
 DN6210
 DN6210!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6210!SPC MD       -   1.00000103  x   1.00001778  =   1.00001881
 DN6210!UTM  18      -   1.00000103  x   0.99968179  =   0.99968282
 DN6210
 DN6210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1849477566(NAD 83)
 DN6210
 DN6210                          SUPERSEDED SURVEY CONTROL
 DN6210
 DN6210  NAD 83(2007)-  39 32 38.03700(N)    075 56 54.80090(W) AD(2002.00) 1
 DN6210  ELLIP H (02/23/12)   -6.509  (m)                       GP(2002.00) 4 1
 DN6210
 DN6210.Superseded values are not recommended for survey control.
 DN6210
 DN6210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6210.See file dsdata.pdf to determine how the superseded data were derived.
 DN6210
 DN6210_MARKER: DD = SURVEY DISK
 DN6210_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6210_STAMPING: CARA 2008
 DN6210_MARK LOGO: MD-015
 DN6210_PROJECTION: FLUSH
 DN6210_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6210_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6210+STABILITY: SURFACE MOTION
 DN6210_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6210+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6210
 DN6210  HISTORY     - Date     Condition        Report By
 DN6210  HISTORY     - 20081204 MONUMENTED       GWS
 DN6210  HISTORY     - 20250918 GOOD             PROFLN
 DN6210
 DN6210                          STATION DESCRIPTION
 DN6210
 DN6210'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6210'THE STATION IS LOCATED IN 2.1 MI (3.4 KM) NORTH OF ELK NECK.
 DN6210'
 DN6210'TO REACH THE STATION FROM THE JUNCTION OF TURKEY POINT ROAD (ROUTE
 DN6210'272) AND OLD ECK NECK ROAD, PROCEED NORTH ON TURKEY POINT ROAD FOR
 DN6210'2.20 MI (3.5 KM) TO THE INTERSECTION OF CARA COVE ROAD AND THE STATION
 DN6210'ON THE LEFT.
 DN6210'
 DN6210'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6210'CONCRETE MONUMENT, 11.2 FT (3.4 M) WEST OF THE WEST EDGE OF THE EDGE
 DN6210'OF PAVING OF MD 272, 20.6 FT (6.3 M) SOUTH OF A UTILITY POLE (CONECTIV
 DN6210'37291/36131, C AND P 143) AND 87.8 FT (26.8 M) NORTH OF THE CENTERLINE
 DN6210'OF CARA COVE ROAD.
 DN6210
 DN6210                          STATION RECOVERY (2025)
 DN6210
 DN6210'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6210'THE MARK IS 33 FT (10.1 M) WEST OF THE HIGHWAY, 25 FT (7.6 M) NORTH OF
 DN6210'A STREET SIGN - CARA COVE - 15 FT (4.6 M) SOUTH OF A POINT OPPOSITE A
 DN6210'UTILITY POLE, ON THE SIDE SLOPE, 3 FT (0.9 M) LOWER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DO9448 ***********************************************************************
 DO9448  DESIGNATION -  CARD1
 DO9448  PID         -  DO9448
 DO9448  STATE/COUNTY-  MD/MONTGOMERY
 DO9448  COUNTRY     -  US
 DO9448  USGS QUAD   -  FALLS CHURCH (2019)
 DO9448
 DO9448                         *CURRENT SURVEY CONTROL
 DO9448  ______________________________________________________________________
 DO9448* NAD 83(2011) POSITION- 38 58 28.02937(N) 077 11 15.45114(W)   ADJUSTED
 DO9448* NAD 83(2011) ELLIP HT-     7.216 (meters)        (09/09/13)   ADJUSTED
 DO9448* NAD 83(2011) EPOCH   -  2010.00
 DO9448* NAVD 88 ORTHO HEIGHT -    39.0   (meters)      128.    (feet) GPS OBS
 DO9448  ______________________________________________________________________
 DO9448  NAVD 88 orthometric height was determined with geoid model    GEOID12A
 DO9448  GEOID HEIGHT    -        -31.785 (meters)                     GEOID12A
 DO9448  GEOID HEIGHT    -        -31.783 (meters)                     GEOID18
 DO9448  NAD 83(2011) X  -  1,101,059.966 (meters)                     COMP
 DO9448  NAD 83(2011) Y  - -4,841,493.241 (meters)                     COMP
 DO9448  NAD 83(2011) Z  -  3,990,117.061 (meters)                     COMP
 DO9448  LAPLACE CORR    -         -1.95  (seconds)                    DEFLEC18
 DO9448
 DO9448  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DO9448  Standards:
 DO9448         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DO9448            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DO9448  -------------------------------------------------------------------
 DO9448  NETWORK    1.01   2.96           0.44   0.38   1.51     -0.07337190
 DO9448  -------------------------------------------------------------------
 DO9448  Click here for local accuracies and other accuracy information.
 DO9448
 DO9448.The horizontal coordinates were established by GPS observations
 DO9448.and adjusted by the GEOMETRICS GPS INCORPORATED in September 2013.
 DO9448
 DO9448.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DO9448.been affixed to the stable North American tectonic plate. See 
 DO9448.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DO9448
 DO9448.The horizontal coordinates are valid at the epoch date displayed above
 DO9448.which is a decimal equivalence of Year/Month/Day.
 DO9448
 DO9448.The orthometric height was determined by GPS observations and a
 DO9448.high-resolution geoid model.
 DO9448
 DO9448.Significant digits in the geoid height do not necessarily reflect accuracy.
 DO9448.GEOID18 height accuracy estimate available here.
 DO9448
 DO9448.Click photographs - Photos may exist for this station.
 DO9448
 DO9448.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DO9448
 DO9448.The Laplace correction was computed from DEFLEC18 derived deflections.
 DO9448
 DO9448.The ellipsoidal height was determined by GPS observations
 DO9448.and is referenced to NAD 83.
 DO9448
 DO9448. The following values were computed from the NAD 83(2011) position.
 DO9448
 DO9448;                    North         East     Units Scale Factor Converg.
 DO9448;SPC MD       -   145,186.902   383,741.653   MT  0.99995133   -0 07 03.9
 DO9448;SPC MD       -   476,334.03  1,258,992.41   sFT  0.99995133   -0 07 03.9
 DO9448;UTM  18      - 4,316,217.703   310,491.868   MT  1.00004224   -1 22 34.9
 DO9448
 DO9448!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DO9448!SPC MD       -   0.99999887  x   0.99995133  =   0.99995020
 DO9448!UTM  18      -   0.99999887  x   1.00004224  =   1.00004111
 DO9448
 DO9448_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1049116217(NAD 83)
 DO9448
 DO9448                          SUPERSEDED SURVEY CONTROL
 DO9448
 DO9448.No superseded survey control is available for this station.
 DO9448
 DO9448_MARKER: DD = SURVEY DISK
 DO9448_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DO9448_STAMPING: CARD1 2013
 DO9448_MARK LOGO: USN
 DO9448_PROJECTION: FLUSH
 DO9448_MAGNETIC: N = NO MAGNETIC MATERIAL
 DO9448_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DO9448+STABILITY: SURFACE MOTION
 DO9448_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DO9448+SATELLITE: SATELLITE OBSERVATIONS - March 26, 2013
 DO9448
 DO9448  HISTORY     - Date     Condition        Report By
 DO9448  HISTORY     - 20130326 MONUMENTED       GEOMET
 DO9448
 DO9448                          STATION DESCRIPTION
 DO9448
 DO9448'DESCRIBED BY GEOMETRICS GPS INCORPORATED 2013 (DWB)
 DO9448'THE STATION IS LOCATED ABOUT 10.9 MI (17.5 KM) SOUTHEAST OF SENECA,
 DO9448'7.8 MI (12.6 KM) SOUTH-SOUTHWEST OF ROCKVILLE AND 6.9 MI (11.1 KM)
 DO9448'WEST-SOUTHWEST OF KENSINGTON.
 DO9448'
 DO9448'TO REACH FROM THE INTERSECTION OF INTERSTATE 495 AND CLARA BARTON
 DO9448'PARKWAY, GO NORTHWEST ON CLARA BARTON PARKWAY 0.67 MI (1.1 KM) TO
 DO9448'CARDEROCK NAVAL FACILITY, FORRESTAL ROAD ON THE RIGHT.  TURN RIGHT AND
 DO9448'GO 0.27 MI (0.4 KM) NORTHEAST TO WITEK ROAD ON THE RIGHT.  TURN RIGHT
 DO9448'AND GO 0.43 MI (0.7 KM) TO THE STATION ON THE LEFT.
 DO9448'
 DO9448'THE STATION IS A DISK STAMPED --CARD1-- SET IN A ROUND CONCRETE
 DO9448'MONUMENT 1.2 M (3.9 FT) DEEP AND 0.3 M (1.0 FT) IN DIAMETER.  THE MARK
 DO9448'IS SET FLUSH WITH THE GROUND.  THE MARK IS 7.0 FT (2.1 M) SOUTHEAST OF
 DO9448'A MANHOLE, 36.0 FT (11.0 M) SOUTHEAST OF A SPEED SIGN, 24.0 FT (7.3 M)
 DO9448'SOUTHEAST OF THE SOUTHERN END OF A CONCRETE HEADWALL, 9.0 FT (2.7 M)
 DO9448'NORTHEAST OF A ROAD SIGN, 72.0 FT (21.9 M) EAST OF A STOP SIGN, 33.0
 DO9448'FT (10.1 M) NORTHWEST OF A BUILDING SIGN, 15.0 FT (4.6 M) NORTH OF THE
 DO9448'EDGE OF PAVEMENT ON WITEK ROAD, 25.0 FT (7.6 M) EAST OF THE EDGE OF
 DO9448'PAVEMENT ON ATLANTA ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DO9449 ***********************************************************************
 DO9449  DESIGNATION -  CARD2
 DO9449  PID         -  DO9449
 DO9449  STATE/COUNTY-  MD/MONTGOMERY
 DO9449  COUNTRY     -  US
 DO9449  USGS QUAD   -  FALLS CHURCH (2019)
 DO9449
 DO9449                         *CURRENT SURVEY CONTROL
 DO9449  ______________________________________________________________________
 DO9449* NAD 83(2011) POSITION- 38 58 29.29410(N) 077 11 41.56897(W)   ADJUSTED
 DO9449* NAD 83(2011) ELLIP HT-     6.257 (meters)        (09/09/13)   ADJUSTED
 DO9449* NAD 83(2011) EPOCH   -  2010.00
 DO9449* NAVD 88 ORTHO HEIGHT -    38.0   (meters)      125.    (feet) GPS OBS
 DO9449  ______________________________________________________________________
 DO9449  NAVD 88 orthometric height was determined with geoid model    GEOID12A
 DO9449  GEOID HEIGHT    -        -31.778 (meters)                     GEOID12A
 DO9449  GEOID HEIGHT    -        -31.775 (meters)                     GEOID18
 DO9449  NAD 83(2011) X  -  1,100,441.311 (meters)                     COMP
 DO9449  NAD 83(2011) Y  - -4,841,607.973 (meters)                     COMP
 DO9449  NAD 83(2011) Z  -  3,990,146.778 (meters)                     COMP
 DO9449  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 DO9449
 DO9449  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DO9449  Standards:
 DO9449         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DO9449            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DO9449  -------------------------------------------------------------------
 DO9449  NETWORK    0.90   2.88           0.39   0.34   1.47     -0.03799098
 DO9449  -------------------------------------------------------------------
 DO9449  Click here for local accuracies and other accuracy information.
 DO9449
 DO9449.The horizontal coordinates were established by GPS observations
 DO9449.and adjusted by the GEOMETRICS GPS INCORPORATED in September 2013.
 DO9449
 DO9449.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DO9449.been affixed to the stable North American tectonic plate. See 
 DO9449.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DO9449
 DO9449.The horizontal coordinates are valid at the epoch date displayed above
 DO9449.which is a decimal equivalence of Year/Month/Day.
 DO9449
 DO9449.The orthometric height was determined by GPS observations and a
 DO9449.high-resolution geoid model.
 DO9449
 DO9449.Significant digits in the geoid height do not necessarily reflect accuracy.
 DO9449.GEOID18 height accuracy estimate available here.
 DO9449
 DO9449.Click photographs - Photos may exist for this station.
 DO9449
 DO9449.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DO9449
 DO9449.The Laplace correction was computed from DEFLEC18 derived deflections.
 DO9449
 DO9449.The ellipsoidal height was determined by GPS observations
 DO9449.and is referenced to NAD 83.
 DO9449
 DO9449. The following values were computed from the NAD 83(2011) position.
 DO9449
 DO9449;                    North         East     Units Scale Factor Converg.
 DO9449;SPC MD       -   145,227.219   383,113.072   MT  0.99995134   -0 07 20.3
 DO9449;SPC MD       -   476,466.30  1,256,930.14   sFT  0.99995134   -0 07 20.3
 DO9449;UTM  18      - 4,316,271.822   309,864.266   MT  1.00004517   -1 22 51.4
 DO9449
 DO9449!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DO9449!SPC MD       -   0.99999902  x   0.99995134  =   0.99995036
 DO9449!UTM  18      -   0.99999902  x   1.00004517  =   1.00004419
 DO9449
 DO9449_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0986416271(NAD 83)
 DO9449
 DO9449                          SUPERSEDED SURVEY CONTROL
 DO9449
 DO9449.No superseded survey control is available for this station.
 DO9449
 DO9449_MARKER: DD = SURVEY DISK
 DO9449_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DO9449_STAMPING: CARD2 2013
 DO9449_MARK LOGO: USN
 DO9449_PROJECTION: FLUSH
 DO9449_MAGNETIC: N = NO MAGNETIC MATERIAL
 DO9449_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DO9449+STABILITY: SURFACE MOTION
 DO9449_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DO9449+SATELLITE: SATELLITE OBSERVATIONS - March 26, 2013
 DO9449
 DO9449  HISTORY     - Date     Condition        Report By
 DO9449  HISTORY     - 20130326 MONUMENTED       GEOMET
 DO9449
 DO9449                          STATION DESCRIPTION
 DO9449
 DO9449'DESCRIBED BY GEOMETRICS GPS INCORPORATED 2013 (DWB)
 DO9449'THE STATION IS LOCATED ABOUT 10.6 MI (17.1 KM) SOUTHEAST OF SENECA,
 DO9449'7.9 MI (12.7 KM) SOUTH-SOUTHWEST OF ROCKVILLE AND 7.3 MI (11.7 KM)
 DO9449'WEST-SOUTHWEST OF KENSINGTON.
 DO9449'
 DO9449'TO REACH FROM THE INTERSECTION OF INTERSTATE 495 AND CLARA BARTON
 DO9449'PARKWAY, GO NORTHWEST ON CLARA BARTON PARKWAY 0.67 MI (1.1 KM) TO
 DO9449'CARDEROCK NAVAL FACILITY, FORRESTAL ROAD ON THE RIGHT.  TURN RIGHT AND
 DO9449'GO 0.15 MI (0.2 KM) NORTHEAST TO THE STATION ON THE RIGHT IN THE
 DO9449'SOUTHWESTERN CORNER OF THE INTERSECTION WITH TAYLOR BOULEVARD.
 DO9449'
 DO9449'THE STATION IS A DISK STAMPED --CARD2-- SET IN A ROUND CONCRETE
 DO9449'MONUMENT 1.2 M (3.9 FT) DEEP AND 0.3 M (1.0 FT) IN DIAMETER.  THE MARK
 DO9449'IS SET FLUSH WITH THE GROUND.  THE MARK IS 15.0 FT (4.6 M) EAST OF A
 DO9449'LAMP POST, 11.0 FT (3.4 M) EAST OF A BUILDING SIGN, 21.0 FT (6.4 M)
 DO9449'NORTHEAST OF A DRAIN INLET, 75.0 FT (22.9 M) NORTH OF A LAMP POST,
 DO9449'60.0 FT (18.3 M) SOUTH OF A STREET SIGN, 101.0 FT (30.8 M) SOUTHEAST
 DO9449'OF A SPEED SIGN, 16.0 FT (4.9 M) EAST OF THE EDGE OF PAVEMENT ON
 DO9449'FORRESTAL ROAD, 62.0 FT (18.9 M) FROM THE EDGE OF PAVEMENT ON TAYLOR
 DO9449'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6725 ***********************************************************************
 JV6725  DESIGNATION -  CARDIFF
 JV6725  PID         -  JV6725
 JV6725  STATE/COUNTY-  MD/HARFORD
 JV6725  COUNTRY     -  US
 JV6725  USGS QUAD   -  DELTA (2019)
 JV6725
 JV6725                         *CURRENT SURVEY CONTROL
 JV6725  ______________________________________________________________________
 JV6725* NAD 83(2011) POSITION- 39 43 15.51999(N) 076 20 07.57213(W)   ADJUSTED
 JV6725* NAD 83(2011) ELLIP HT-    99.944 (meters)        (06/27/12)   ADJUSTED
 JV6725* NAD 83(2011) EPOCH   -  2010.00
 JV6725* NAVD 88 ORTHO HEIGHT -   132.7   (meters)      435.    (feet) VERTCON3
 JV6725  ______________________________________________________________________
 JV6725  GEOID HEIGHT    -        -32.797 (meters)                     GEOID18
 JV6725  NAD 83(2011) X  -  1,160,548.466 (meters)                     COMP
 JV6725  NAD 83(2011) Y  - -4,773,590.169 (meters)                     COMP
 JV6725  NAD 83(2011) Z  -  4,054,268.697 (meters)                     COMP
 JV6725  LAPLACE CORR    -         -2.49  (seconds)                    DEFLEC18
 JV6725
 JV6725  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6725  Standards:
 JV6725         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6725            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6725  -------------------------------------------------------------------
 JV6725  NETWORK    1.47   4.78           0.60   0.58   2.44      0.37142451
 JV6725  -------------------------------------------------------------------
 JV6725  Click here for local accuracies and other accuracy information.
 JV6725
 JV6725.The horizontal coordinates were established by GPS observations
 JV6725.and adjusted by the National Geodetic Survey in June 2012.
 JV6725
 JV6725.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6725.been affixed to the stable North American tectonic plate. See 
 JV6725.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6725
 JV6725.The horizontal coordinates are valid at the epoch date displayed above
 JV6725.which is a decimal equivalence of Year/Month/Day.
 JV6725
 JV6725.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6725.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6725
 JV6725.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6725.GEOID18 height accuracy estimate available here.
 JV6725
 JV6725.Click photographs - Photos may exist for this station.
 JV6725
 JV6725.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6725
 JV6725.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6725
 JV6725.The ellipsoidal height was determined by GPS observations
 JV6725.and is referenced to NAD 83.
 JV6725
 JV6725. The following values were computed from the NAD 83(2011) position.
 JV6725
 JV6725;                    North         East     Units Scale Factor Converg.
 JV6725;SPC MD       -   228,257.658   456,982.767   MT  1.00005865   +0 25 01.6
 JV6725;SPC MD       -   748,875.33  1,499,284.29   sFT  1.00005865   +0 25 01.6
 JV6725;UTM  18      - 4,397,641.721   385,542.989   MT  0.99976128   -0 51 12.6
 JV6725
 JV6725!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6725!SPC MD       -   0.99998432  x   1.00005865  =   1.00004297
 JV6725!UTM  18      -   0.99998432  x   0.99976128  =   0.99974560
 JV6725
 JV6725:                Primary Azimuth Mark                     Grid Az
 JV6725:SPC MD       -  CARDIFF AZ MK                            306 10 13.1
 JV6725:UTM  18      -  CARDIFF AZ MK                            307 26 27.3
 JV6725
 JV6725_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8554297641(NAD 83)
 JV6725
 JV6725|---------------------------------------------------------------------|
 JV6725| PID    Reference Object                     Distance      Geod. Az  |
 JV6725|                                                           dddmmss.s |
 JV6725| JV6726 CARDIFF AZ MK                       APPROX. 0.7 KM 3063514.7 |
 JV6725|---------------------------------------------------------------------|
 JV6725
 JV6725                          SUPERSEDED SURVEY CONTROL
 JV6725
 JV6725  NAD 83(2007)-  39 43 15.52027(N)    076 20 07.57282(W) AD(2002.00) 0
 JV6725  ELLIP H (02/10/07)   99.963  (m)                       GP(2002.00)    
 JV6725  ELLIP H (09/18/02)   99.968  (m)                       GP(       ) 4 2
 JV6725  NAD 83(1991)-  39 43 15.52035(N)    076 20 07.57240(W) AD(       ) 1
 JV6725  ELLIP H (01/27/92)   99.972  (m)                       GP(       ) 4 1
 JV6725  NAD 83(1986)-  39 43 15.51316(N)    076 20 07.57845(W) AD(       ) 1
 JV6725  NGVD 29 (06/18/91)  133.0    (m)  UNKNOWN  model used  GPS OBS        
 JV6725
 JV6725.Superseded values are not recommended for survey control.
 JV6725
 JV6725.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6725.See file dsdata.pdf to determine how the superseded data were derived.
 JV6725
 JV6725_MARKER: DD = SURVEY DISK
 JV6725_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6725_STAMPING: 122 CARDIFF 1989
 JV6725_MARK LOGO: MD-025
 JV6725_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6725_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6725+STABILITY: SURFACE MOTION
 JV6725_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6725+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2007
 JV6725
 JV6725  HISTORY     - Date     Condition        Report By
 JV6725  HISTORY     - 1989     MONUMENTED       RDA
 JV6725  HISTORY     - 20070224 GOOD             INDIV
 JV6725
 JV6725                          STATION DESCRIPTION
 JV6725
 JV6725'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6725'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND IN
 JV6725'THE TOWN OF CARDIFF.
 JV6725'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 136 AND
 JV6725'STATE HIGHWAY 165 IN WHITEFORD PROCEED SOUTHEAST ALONG HIGHWAY 136
 JV6725'0.25 MILES TO ITS INTERSECTION WITH OLD PYLESVILLE ROAD.  TURN LEFT
 JV6725'AND PROCEED NORTHEAST ALONG OLD PYLESVILLE ROAD WHICH TURNS INTO
 JV6725'CARDIFF MAIN STREET 0.95 MILES TO ITS INTERSECTION WITH CARDIFF MAIN
 JV6725'STREET AND CHURCH STREET AND THE STATION ON THE RIGHT.
 JV6725'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6725'ABOUT 1 INCH BELOW GROUND STAMPED 122 CARDIFF 1989.  THE STATION IS
 JV6725'53.0 FEET SOUTHWEST OF THE CENTERLINE OF CHURCH STREET, 28.8 FEET
 JV6725'SOUTH OF C AND P POLE NUMBER 468, AND 24.4 FEET SOUTHEAST OF THE
 JV6725'CENTERLINE OF CARDIFF MAIN STREET.
 JV6725
 JV6725                          STATION RECOVERY (2007)
 JV6725
 JV6725'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (TRA)
 JV6725'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6727 ***********************************************************************
 JV6727  DESIGNATION -  CAREA
 JV6727  PID         -  JV6727
 JV6727  STATE/COUNTY-  MD/HARFORD
 JV6727  COUNTRY     -  US
 JV6727  USGS QUAD   -  NORRISVILLE (2016)
 JV6727
 JV6727                         *CURRENT SURVEY CONTROL
 JV6727  ______________________________________________________________________
 JV6727* NAD 83(2011) POSITION- 39 43 08.15878(N) 076 30 19.20516(W)   ADJUSTED
 JV6727* NAD 83(2011) ELLIP HT-   187.842 (meters)        (06/27/12)   ADJUSTED
 JV6727* NAD 83(2011) EPOCH   -  2010.00
 JV6727* NAVD 88 ORTHO HEIGHT -   220.4   (meters)      723.    (feet) VERTCON3
 JV6727  ______________________________________________________________________
 JV6727  GEOID HEIGHT    -        -32.527 (meters)                     GEOID18
 JV6727  NAD 83(2011) X  -  1,146,437.983 (meters)                     COMP
 JV6727  NAD 83(2011) Y  - -4,777,217.350 (meters)                     COMP
 JV6727  NAD 83(2011) Z  -  4,054,150.236 (meters)                     COMP
 JV6727  LAPLACE CORR    -         -3.02  (seconds)                    DEFLEC18
 JV6727
 JV6727  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6727  Standards:
 JV6727         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6727            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6727  -------------------------------------------------------------------
 JV6727  NETWORK    1.70   5.37           0.71   0.64   2.74      0.43226037
 JV6727  -------------------------------------------------------------------
 JV6727  Click here for local accuracies and other accuracy information.
 JV6727
 JV6727.The horizontal coordinates were established by GPS observations
 JV6727.and adjusted by the National Geodetic Survey in June 2012.
 JV6727
 JV6727.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6727.been affixed to the stable North American tectonic plate. See 
 JV6727.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6727
 JV6727.The horizontal coordinates are valid at the epoch date displayed above
 JV6727.which is a decimal equivalence of Year/Month/Day.
 JV6727
 JV6727.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6727.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6727
 JV6727.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6727.GEOID18 height accuracy estimate available here.
 JV6727
 JV6727.Click photographs - Photos may exist for this station.
 JV6727
 JV6727.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6727
 JV6727.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6727
 JV6727.The ellipsoidal height was determined by GPS observations
 JV6727.and is referenced to NAD 83.
 JV6727
 JV6727. The following values were computed from the NAD 83(2011) position.
 JV6727
 JV6727;                    North         East     Units Scale Factor Converg.
 JV6727;SPC MD       -   227,938.123   442,416.309   MT  1.00005812   +0 18 37.7
 JV6727;SPC MD       -   747,826.99  1,451,494.17   sFT  1.00005812   +0 18 37.7
 JV6727;SPC PA S     -    43,567.369   706,722.040   MT  1.00004044   +0 48 27.1
 JV6727;SPC PA S     -   142,937.28  2,318,637.23   sFT  1.00004044   +0 48 27.1
 JV6727;UTM  18      - 4,397,645.512   370,977.045   MT  0.99980495   -0 57 43.5
 JV6727
 JV6727!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6727!SPC MD       -   0.99997053  x   1.00005812  =   1.00002865
 JV6727!SPC PA S     -   0.99997053  x   1.00004044  =   1.00001097
 JV6727!UTM  18      -   0.99997053  x   0.99980495  =   0.99977549
 JV6727
 JV6727_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7097797645(NAD 83)
 JV6727
 JV6727|---------------------------------------------------------------------|
 JV6727| PID    Reference Object                     Distance      Geod. Az  |
 JV6727|                                                           dddmmss.s |
 JV6727| JV6728 CAREA AZ MK                         398.651 METERS 35855     |
 JV6727|---------------------------------------------------------------------|
 JV6727
 JV6727                          SUPERSEDED SURVEY CONTROL
 JV6727
 JV6727  NAD 83(2007)-  39 43 08.15905(N)    076 30 19.20589(W) AD(2002.00) 0
 JV6727  ELLIP H (02/10/07)  187.866  (m)                       GP(2002.00)    
 JV6727  ELLIP H (09/18/02)  187.908  (m)                       GP(       ) 4 2
 JV6727  NAD 83(1991)-  39 43 08.15908(N)    076 30 19.20485(W) AD(       ) 1
 JV6727  ELLIP H (01/27/92)  187.899  (m)                       GP(       ) 4 1
 JV6727  NAD 83(1986)-  39 43 08.15193(N)    076 30 19.21017(W) AD(       ) 1
 JV6727  NGVD 29 (06/18/91)  220.6    (m)  UNKNOWN  model used  GPS OBS        
 JV6727
 JV6727.Superseded values are not recommended for survey control.
 JV6727
 JV6727.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6727.See file dsdata.pdf to determine how the superseded data were derived.
 JV6727
 JV6727_MARKER: DD = SURVEY DISK
 JV6727_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6727_STAMPING: 118 CAREA 1989
 JV6727_MARK LOGO: MD-025
 JV6727_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6727_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6727+STABILITY: SURFACE MOTION
 JV6727_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6727+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6727
 JV6727  HISTORY     - Date     Condition        Report By
 JV6727  HISTORY     - 1989     MONUMENTED       RDA
 JV6727
 JV6727                          STATION DESCRIPTION
 JV6727
 JV6727'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6727'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6727'2.0 MILES NORTHEAST OF THE VILLAGE OF NORRISVILLE.
 JV6727'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 136 AND
 JV6727'STATE HIGHWAY 23 IN THE VILLAGE OF NORRISVILLE PROCEED EAST ALONG
 JV6727'HIGHWAY 136 1.73 MILES TO ITS INTERSECTION WITH CAREA ROAD.  TURN LEFT
 JV6727'AND PROCEED NORTH ALONG CAREA ROAD 1.09 MILES TO THE STATION ON THE
 JV6727'LEFT.
 JV6727'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6727'ABOUT 1 INCH BELOW GROUND STAMPED 118 CAREA 1989.  THE STATION IS 17.0
 JV6727'WEST OF THE CENTERLINE OF CAREA ROAD, 83.0 FEET SOUTH OF C AND P OF
 JV6727'MARYLAND POLE NUMBER 22 1/2, AND 73.0 FEET NORTH OF THE CENTERLINE OF
 JV6727'PRIVATE DRIVE BOX 5224.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1622 ***********************************************************************
 HU1622  DESIGNATION -  CAREY
 HU1622  PID         -  HU1622
 HU1622  STATE/COUNTY-  MD/WORCESTER
 HU1622  COUNTRY     -  US
 HU1622  USGS QUAD   -  SNOW HILL (2016)
 HU1622
 HU1622                         *CURRENT SURVEY CONTROL
 HU1622  ______________________________________________________________________
 HU1622* NAD 83(1991) POSITION- 38 09 05.08839(N) 075 24 35.09733(W)   ADJUSTED
 HU1622* NAVD 88 ORTHO HEIGHT -     9.51  (+/-2cm)       31.2   (feet) VERTCON3
 HU1622  ______________________________________________________________________
 HU1622  GEOID HEIGHT    -        -36.240 (meters)                     GEOID18
 HU1622  LAPLACE CORR    -         -0.56  (seconds)                    DEFLEC18
 HU1622  HORZ ORDER      -  FIRST
 HU1622  VERT ORDER      -  THIRD ? (See Below)
 HU1622
 HU1622.The horizontal coordinates were established by classical geodetic methods
 HU1622.and adjusted by the National Geodetic Survey in January 1992.
 HU1622
 HU1622.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1622.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1622
 HU1622.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1622.GEOID18 height accuracy estimate available here.
 HU1622
 HU1622.The vertical order pertains to the NGVD 29 superseded value.
 HU1622
 HU1622.Click photographs - Photos may exist for this station.
 HU1622
 HU1622.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1622
 HU1622. The following values were computed from the NAD 83(1991) position.
 HU1622
 HU1622;                    North         East     Units Scale Factor Converg.
 HU1622;SPC MD       -    55,023.481   539,384.981   MT  1.00002917   +0 59 53.1
 HU1622;SPC MD       -   180,522.87  1,769,632.23   sFT  1.00002917   +0 59 53.1
 HU1622;UTM  18      - 4,222,694.174   464,099.130   MT  0.99961587   -0 15 11.2
 HU1622
 HU1622!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1622!SPC MD       -   1.00000419  x   1.00002917  =   1.00003336
 HU1622!UTM  18      -   1.00000419  x   0.99961587  =   0.99962006
 HU1622
 HU1622:                Primary Azimuth Mark                     Grid Az
 HU1622:SPC MD       -  CAREY AZ MK                              047 58 29.1
 HU1622:UTM  18      -  CAREY AZ MK                              049 13 33.4
 HU1622
 HU1622_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6409922694(NAD 83)
 HU1622
 HU1622|---------------------------------------------------------------------|
 HU1622| PID    Reference Object                     Distance      Geod. Az  |
 HU1622|                                                           dddmmss.s |
 HU1622| DC7888 CAREY RM 1                           32.863 METERS 00727     |
 HU1622| HU1623 MAKEMIE MEMORIAL PRESB CHURCH       APPROX. 3.1 KM 0262913.2 |
 HU1622| HU1624 SNOW HILL WORCHESTER CO CTHSE       APPROX. 3.2 KM 0271849.0 |
 HU1622| HU1626 SNOW HILL WATER WKS STANDPIPE       APPROX. 3.2 KM 0285045.1 |
 HU1622| HU1627 SNOW HILL ME CH BELL TOWER          APPROX. 3.1 KM 0302757.7 |
 HU1622| DC7887 CAREY AZ MK                                        0485822.2 |
 HU1622| HU2587 CAREY 2 RESET                        16.060 METERS 21659     |
 HU1622| HU2615 CAREY RM 2                           41.041 METERS 25203     |
 HU1622|---------------------------------------------------------------------|
 HU1622
 HU1622                          SUPERSEDED SURVEY CONTROL
 HU1622
 HU1622  NAD 83(1986)-  38 09 05.07998(N)    075 24 35.12979(W) AD(       ) 1
 HU1622  NAD 27      -  38 09 04.64900(N)    075 24 36.42300(W) AD(       ) 1
 HU1622  NGVD 29               9.75   (m)           32.0    (f) LEVELING    3  
 HU1622
 HU1622.Superseded values are not recommended for survey control.
 HU1622
 HU1622.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1622.See file dsdata.pdf to determine how the superseded data were derived.
 HU1622
 HU1622_MARKER: DS = TRIANGULATION STATION DISK
 HU1622_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1622_STAMPING: CAREY 1942
 HU1622_MARK LOGO: CGS
 HU1622_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1622+STABILITY: SURFACE MOTION
 HU1622
 HU1622  HISTORY     - Date     Condition        Report By
 HU1622  HISTORY     - 1942     MONUMENTED       CGS
 HU1622  HISTORY     - 1958     GOOD             CGS
 HU1622  HISTORY     - 1959     SEE DESCRIPTION  CGS
 HU1622  HISTORY     - 1961     SEE DESCRIPTION  CGS
 HU1622
 HU1622                          STATION DESCRIPTION
 HU1622
 HU1622'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU1622'STATION IS LOCATED 2.25 MILES BY ROAD SW OF THE VILLAGE OF
 HU1622'SNOW HILL ON THE SUMMIT OF A SANDY KNOLL, ABOUT 200 FEET NE OF
 HU1622'THE CAREY HOUSE.  IT IS 137 FEET E OF THE SE CORNER OF A RED
 HU1622'BRICK GARAGE.  IT IS STAMPED CAREY 1942 AND PROJECTS 5 INCHES.
 HU1622'
 HU1622'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HU1622'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED.
 HU1622'
 HU1622'REFERENCE MARK NO. 1 IS LOCATED NE OF THE STATION, 20.5 FEET
 HU1622'W OF A 12-INCH PINE TREE.  IT IS STAMPED CAREY NO. 1 1942 AND
 HU1622'PROJECTS 5 INCHES.
 HU1622'
 HU1622'REFERENCE MARK NO. 2 IS LOCATED W OF THE STATION, 1 FOOT NE
 HU1622'OF A RED BRICK GARAGE AND IS STAMPED CAREY NO.2 1942 AND PROJECTS
 HU1622'5 INCHES.
 HU1622'
 HU1622'AZIMUTH MARK IS LOCATED 0.35 MILE NE OF THE STATION, 5 FEET SW
 HU1622'OF TELEPHONE POLE NO. 71, 21 FEET NW OF STATE HIGHWAY 113,
 HU1622'WITNESSED BY A 4- BY 4-INCH WHITE POST AND IS STAMPED CAREY
 HU1622'1942 AND PROJECTS 6 INCHES.
 HU1622'
 HU1622'TO REACH STATION FROM THE COURTHOUSE IN SNOW HILL, FOLLOW STATE
 HU1622'HIGHWAY 113 SW FOR 2.25 MILES TO A FARM ROAD RIGHT, LEADING TO
 HU1622'THE CAREY FARMHOUSE, TURN RIGHT AND CONTINUE FOR 0.05 MILE,
 HU1622'THENCE RIGHT TO THE STATION ON RIGHT.
 HU1622'
 HU1622'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT KLEJ.
 HU1622'
 HU1622'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT PARSON.
 HU1622'
 HU1622'A 64-FOOT TOWER WILL SEE A 123-FOOT LIGHT AT NASSAWANGO.
 HU1622'
 HU1622'A 64-FOOT TOWER WILL SEE A 126-FOOT LIGHT AT OUTTEN.
 HU1622
 HU1622                          STATION RECOVERY (1958)
 HU1622
 HU1622'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1622'STATION WAS RECOVERED AS DESCRIBED.  THE STATION, REFERENCE MARK
 HU1622'NO. 2, AND AZIMUTH MARK WERE RECOVERED AND IN GOOD CONDITION.
 HU1622'
 HU1622'THE SMALL HILL THAT THE STATION SETS ON HAS BEEN CUT DOWN ABOUT
 HU1622'6 FEET LEAVING THE STATION AND REFERENCE MARK NO. 1 SITTING ON
 HU1622'SMALL MOUNDS OF DIRT.  ONE SIDE OF REFERENCE MARK NO. 1 IS
 HU1622'COMPLETELY EXPOSED BY EROSION OF THE MOUND THAT IT SITS ON.
 HU1622'
 HU1622'THE OWNER OF THE PROPERTY JOSEPH CAREY WOULD LIKE TO HAVE THE
 HU1622'STATION MOVED SO HE CAN COMPLETE THE EXPANSION OF HIS WRECKING
 HU1622'YARD.
 HU1622
 HU1622                          STATION RECOVERY (1959)
 HU1622
 HU1622'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (WER)
 HU1622'THE STATION AND REFERENCE MARK NO. 1 HAVE BEEN MOVED.  THE STATION
 HU1622'IS 16.060 METERS SOUTH OF ITS ORIGINAL POSITION.  AZIMUTH MARK AND
 HU1622'REFERENCE MARK NO. 2 WERE RECOVERED AS DESCRIBED AND FOUND IN
 HU1622'GOOD CONDITION.
 HU1622
 HU1622                          STATION RECOVERY (1961)
 HU1622
 HU1622'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (CWM)
 HU1622'THE SURFACE STATION AND RM NO. 1 HAVE BEEN DESTROYED.  RM NO. 2
 HU1622'AND THE AZIMUTH MARK WERE RECOVERED AS DESCRIBED AND FOUND IN
 HU1622'GOOD CONDITION.
 HU1622'
 HU1622'THE SURFACE MONUMENT WAS FOUND ON A SMALL MOUND WITH ONE SIDE
 HU1622'COMPELTELY EXPOSED AND THE TOP BLADED OFF.  THE UNDERGROUND MARK
 HU1622'IS ASSUMED TO BE INTACT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2588 ***********************************************************************
 HU2588  DESIGNATION -  CAREY 2 AZ MK 2
 HU2588  PID         -  HU2588
 HU2588  STATE/COUNTY-  MD/WORCESTER
 HU2588  COUNTRY     -  US
 HU2588  USGS QUAD   -  SNOW HILL (2016)
 HU2588
 HU2588                         *CURRENT SURVEY CONTROL
 HU2588  ______________________________________________________________________
 HU2588* NAD 83(1991) POSITION- 38 08 41.56947(N) 075 24 12.57599(W)   NO CHECK
 HU2588* NAVD 88 ORTHO HEIGHT -     9.9   (meters)       32.    (feet) VERTCON3
 HU2588  ______________________________________________________________________
 HU2588  GEOID HEIGHT    -        -36.250 (meters)                     GEOID18
 HU2588  LAPLACE CORR    -         -0.63  (seconds)                    DEFLEC18
 HU2588  HORZ ORDER      -  SECOND
 HU2588
 HU2588.The horizontal coordinates were established by classical geodetic methods
 HU2588.and adjusted by the National Geodetic Survey in January 1992.
 HU2588
 HU2588.No horizontal observational check was made to the station.
 HU2588
 HU2588.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2588.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2588
 HU2588.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2588.GEOID18 height accuracy estimate available here.
 HU2588
 HU2588.Click photographs - Photos may exist for this station.
 HU2588
 HU2588.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2588
 HU2588. The following values were computed from the NAD 83(1991) position.
 HU2588
 HU2588;                    North         East     Units Scale Factor Converg.
 HU2588;SPC MD       -    54,307.979   539,945.937   MT  1.00003061   +1 00 07.3
 HU2588;SPC MD       -   178,175.43  1,771,472.63   sFT  1.00003061   +1 00 07.3
 HU2588;UTM  18      - 4,221,966.895   464,644.102   MT  0.99961539   -0 14 57.2
 HU2588
 HU2588!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2588!SPC MD       -   1.00000413  x   1.00003061  =   1.00003474
 HU2588!UTM  18      -   1.00000413  x   0.99961539  =   0.99961952
 HU2588
 HU2588_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6464421966(NAD 83)
 HU2588
 HU2588                          SUPERSEDED SURVEY CONTROL
 HU2588
 HU2588  NAD 83(1986)-  38 08 41.56105(N)    075 24 12.60843(W) AD(       ) 2
 HU2588  NGVD 29 (03/28/90)   10.2    (m)           33.     (f) VERT ANG       
 HU2588
 HU2588.Superseded values are not recommended for survey control.
 HU2588
 HU2588.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2588.See file dsdata.pdf to determine how the superseded data were derived.
 HU2588
 HU2588_MARKER: DZ = AZIMUTH MARK DISK
 HU2588_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2588_STAMPING: CAREY 2 1959 NO 2 1984
 HU2588_MARK LOGO: NGS
 HU2588_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2588_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2588+STABILITY: SURFACE MOTION
 HU2588_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2588+SATELLITE: SATELLITE OBSERVATIONS - 1984
 HU2588
 HU2588  HISTORY     - Date     Condition        Report By
 HU2588  HISTORY     - 1984     MONUMENTED       NGS
 HU2588
 HU2588                          STATION DESCRIPTION
 HU2588
 HU2588'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2588'THE MARK IS LOCATED ABOUT 16.5 KM (10.25 MI) NORTHEAST OF OF POCOMOKE
 HU2588'CITY, 9.25 KM (5.75 MI) WEST-NORTHWEST OF FIGGS LANDING AND 3.25 KM
 HU2588'(2.00 MI) SOUTH-SOUTHEAST OF SNOW HILL.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2588'TO REACH THE MARK FROM THE POST OFFICE AT SNOW HILL, GO SOUTHEAST ON
 HU2588'STATE HIGHWAY 12 WASHINGTON STREET FOR 0.15 KM (0.10 MI) TO A
 HU2588'CROSSROADS.  TURN RIGHT AND GO SOUTHWEST ON STATE HIGHWAY 394 MARKET
 HU2588'STREET FOR 3.55 KM (2.20 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 HU2588'SOUTHEAST ON CASTLE HILL ROAD FOR 0.8 KM (0.50 MI) TO A CROSSROADS AND
 HU2588'THE MARK IN THE NORTHEASTERLY ANGLE OF THE INTERSECTION.
 HU2588'THE MARK IS SET IS A 12-INCH ROUND CONCRETE POST FLUSH WITH THE
 HU2588'GROUND.  IT IS 17.7 M (58.1 FT) SOUTHEAST OF THE CENTER OF U.S.
 HU2588'HIGHWAY 113, 11.4 M (37.4 FT) NORTHEAST OF THE CENTER OF CASTLE HILL
 HU2588'ROAD, 74.7 M (245.1 FT) EAST OF A POWERLINE POLE NUMBERED52409-35091
 HU2588'T-9 23Q AND 0.7 M (2.3 FT) NORTHWEST OF A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2587 ***********************************************************************
 HU2587  DESIGNATION -  CAREY 2 RESET
 HU2587  PID         -  HU2587
 HU2587  STATE/COUNTY-  MD/WORCESTER
 HU2587  COUNTRY     -  US
 HU2587  USGS QUAD   -  SNOW HILL (2016)
 HU2587
 HU2587                         *CURRENT SURVEY CONTROL
 HU2587  ______________________________________________________________________
 HU2587* NAD 83(1991) POSITION- 38 09 04.67229(N) 075 24 35.49411(W)   ADJUSTED
 HU2587* NAVD 88 ORTHO HEIGHT -     8.31  (+/-2cm)       27.3   (feet) VERTCON3
 HU2587  ______________________________________________________________________
 HU2587  GEOID HEIGHT    -        -36.240 (meters)                     GEOID18
 HU2587  LAPLACE CORR    -         -0.56  (seconds)                    DEFLEC18
 HU2587  HORZ ORDER      -  SECOND
 HU2587  VERT ORDER      -  THIRD ? (See Below)
 HU2587
 HU2587.The horizontal coordinates were established by classical geodetic methods
 HU2587.and adjusted by the National Geodetic Survey in January 1992.
 HU2587
 HU2587.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2587.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2587
 HU2587.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2587.GEOID18 height accuracy estimate available here.
 HU2587
 HU2587.The vertical order pertains to the NGVD 29 superseded value.
 HU2587
 HU2587.Click photographs - Photos may exist for this station.
 HU2587
 HU2587.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2587
 HU2587. The following values were computed from the NAD 83(1991) position.
 HU2587
 HU2587;                    North         East     Units Scale Factor Converg.
 HU2587;SPC MD       -    55,010.485   539,375.544   MT  1.00002920   +0 59 52.9
 HU2587;SPC MD       -   180,480.23  1,769,601.26   sFT  1.00002920   +0 59 52.9
 HU2587;UTM  18      - 4,222,681.392   464,089.416   MT  0.99961588   -0 15 11.5
 HU2587
 HU2587!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2587!SPC MD       -   1.00000438  x   1.00002920  =   1.00003358
 HU2587!UTM  18      -   1.00000438  x   0.99961588  =   0.99962026
 HU2587
 HU2587:                Primary Azimuth Mark                     Grid Az
 HU2587:SPC MD       -  CAREY AZ MK                              047 35 10.6
 HU2587:UTM  18      -  CAREY AZ MK                              048 50 15.0
 HU2587
 HU2587_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6408922681(NAD 83)
 HU2587
 HU2587|---------------------------------------------------------------------|
 HU2587| PID    Reference Object                     Distance      Geod. Az  |
 HU2587|                                                           dddmmss.s |
 HU2587| HU1622 CAREY                                16.060 METERS 03659     |
 HU2587| DC7887 CAREY AZ MK                                        0483503.5 |
 HU2587| HU2588 CAREY 2 AZ MK 2                     APPROX. 0.9 KM 1415524.8 |
 HU2587| HU2616 CAREY 2 RM 3                         21.379 METERS 20053     |
 HU2587| HU2615 CAREY RM 2                           29.425 METERS 27013     |
 HU2587|---------------------------------------------------------------------|
 HU2587
 HU2587                          SUPERSEDED SURVEY CONTROL
 HU2587
 HU2587  NAD 83(1986)-  38 09 04.66388(N)    075 24 35.52657(W) AD(       ) 2
 HU2587  NAD 27      -  38 09 04.23290(N)    075 24 36.81990(W) AD(       ) 2
 HU2587  NGVD 29               8.55   (m)           28.1    (f) LEVELING    3  
 HU2587
 HU2587.Superseded values are not recommended for survey control.
 HU2587
 HU2587.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2587.See file dsdata.pdf to determine how the superseded data were derived.
 HU2587
 HU2587_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2587_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2587_STAMPING: CAREY 2 1959 1984
 HU2587_MARK LOGO: NGS
 HU2587_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2587_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2587+STABILITY: SURFACE MOTION
 HU2587_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2587+SATELLITE: SATELLITE OBSERVATIONS - 1984
 HU2587
 HU2587  HISTORY     - Date     Condition        Report By
 HU2587  HISTORY     - 1984     MONUMENTED       NGS
 HU2587  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU2587
 HU2587                          STATION DESCRIPTION
 HU2587
 HU2587'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2587'THE STATION IS LOCATED ABOUT 16 KM (9.95 MI) NORTHEAST OF POCOMOKE
 HU2587'CITY, 10.5 KM (6.50 MI) WEST-NORTHWEST OF PIGGS LANDING AND 3.25 KM
 HU2587'(2.00 MI) SOUTHWEST OF SNOW HILL.  OWNERSHIP--CAREY BROTHERS INC.,
 HU2587'SNOW HILL, MARYLAND.
 HU2587'TO REACH THE STATION FROM THE POST OFFICE AT SNOW HILL, GO SOUTHEAST
 HU2587'ON STATE HIGHWAY 12 WASHINGTON STREET FOR 0.15 KM (0.10 MI) TO A
 HU2587'CROSSROADS.  TURN RIGHT AND GO SOUTHWEST ON STATE HIGHWAY 394 MARKET
 HU2587'STREET FOR 3.5 KM (2.15 MI) TO THE STATION ON THE RIGHT ATOP A LOW
 HU2587'KNOLL AND BEHIND A SERVICE STATION.
 HU2587'THE STATION IS SET IN THE TOP OF A 12-INCH ROUND CONCRETE POST
 HU2587'RECESSED 0.1 M (0.3 FT) BELOW GROUND.  IT IS 62.0 M (203.4 FT)
 HU2587'NORTHWEST OF THE CENTER OF STATE HIGHWAY 394, 21.2 M (69.6 FT) WEST OF
 HU2587'THE NORTH CORNER OF THE SERVICE STATION, 12.6 M (41.3 FT)
 HU2587'WEST-NORTHWEST OF THE WEST CORNER OF THE SERVICE STATION, 10.7 M
 HU2587'(35.1 FT) NORTHEAST OF A 18-INCH PINE TREE AND 0.4 M (1.3 FT)
 HU2587'SOUTHEAST OF A CARSONITE WITNESS POST.  THE UNDERGROUND MARK IS 1.1 M
 HU2587'(3.6 FT) BELOW THE SURFACE.
 HU2587
 HU2587                          STATION RECOVERY (2003)
 HU2587
 HU2587'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU2587'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2400 ***********************************************************************
 JV2400  DESIGNATION -  CARMEL
 JV2400  PID         -  JV2400
 JV2400  STATE/COUNTY-  MD/FREDERICK
 JV2400  COUNTRY     -  US
 JV2400  USGS QUAD   -  WALKERSVILLE (2016)
 JV2400
 JV2400                         *CURRENT SURVEY CONTROL
 JV2400  ______________________________________________________________________
 JV2400* NAD 83(1991) POSITION- 39 23 38.96926(N) 077 19 54.22042(W)   ADJUSTED
 JV2400* NAVD 88 ORTHO HEIGHT -   123.206 (meters)      404.22  (feet) ADJUSTED
 JV2400  ______________________________________________________________________
 JV2400  GEOID HEIGHT    -        -32.463 (meters)                     GEOID18
 JV2400  LAPLACE CORR    -          6.00  (seconds)                    DEFLEC18
 JV2400  DYNAMIC HEIGHT  -        123.140 (meters)      404.00  (feet) COMP
 JV2400  MODELED GRAVITY -    980,091.4   (mgal)                       NAVD 88
 JV2400
 JV2400  HORZ ORDER      -  SECOND
 JV2400  VERT ORDER      -  SECOND    CLASS 0
 JV2400
 JV2400.The horizontal coordinates were established by classical geodetic methods
 JV2400.and adjusted by the National Geodetic Survey in January 1992.
 JV2400
 JV2400.The orthometric height was determined by differential leveling and
 JV2400.adjusted by the NATIONAL GEODETIC SURVEY
 JV2400.in June 1991.
 JV2400
 JV2400.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2400.GEOID18 height accuracy estimate available here.
 JV2400
 JV2400.Click photographs - Photos may exist for this station.
 JV2400
 JV2400.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2400
 JV2400.The dynamic height is computed by dividing the NAVD 88
 JV2400.geopotential number by the normal gravity value computed on the
 JV2400.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2400.degrees latitude (g = 980.6199 gals.).
 JV2400
 JV2400.The modeled gravity was interpolated from observed gravity values.
 JV2400
 JV2400. The following values were computed from the NAD 83(1991) position.
 JV2400
 JV2400;                    North         East     Units Scale Factor Converg.
 JV2400;SPC MD       -   191,815.844   371,424.051   MT  0.99999071   -0 12 29.5
 JV2400;SPC MD       -   629,315.81  1,218,580.41   sFT  0.99999071   -0 12 29.5
 JV2400;UTM  18      - 4,363,112.066   299,205.713   MT  1.00009644   -1 28 49.2
 JV2400
 JV2400!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2400!SPC MD       -   0.99998576  x   0.99999071  =   0.99997647
 JV2400!UTM  18      -   0.99998576  x   1.00009644  =   1.00008220
 JV2400
 JV2400:                Primary Azimuth Mark                     Grid Az
 JV2400:SPC MD       -  DENNIS                                   113 19 20.8
 JV2400:UTM  18      -  DENNIS                                   114 35 40.5
 JV2400
 JV2400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9920563112(NAD 83)
 JV2400
 JV2400|---------------------------------------------------------------------|
 JV2400| PID    Reference Object                     Distance      Geod. Az  |
 JV2400|                                                           dddmmss.s |
 JV2400| CK6771 CARMEL RM 1                           7.270 METERS 08001     |
 JV2400| JV2402 DENNIS                              APPROX. 0.8 KM 1130651.3 |
 JV2400| JV4598 FREDERICK MUNICIPAL TANK            APPROX. 6.9 KM 2850251.3 |
 JV2400| CK6772 CARMEL RM 2                           7.335 METERS 31731     |
 JV2400|---------------------------------------------------------------------|
 JV2400
 JV2400                          SUPERSEDED SURVEY CONTROL
 JV2400
 JV2400  NAD 83(1986)-  39 23 38.96918(N)    077 19 54.23040(W) AD(       ) 2
 JV2400  NAD 27      -  39 23 38.60140(N)    077 19 55.28680(W) AD(       ) 2
 JV2400  NGVD 29             123.42   (m)          404.9    (f) LEVELING    3  
 JV2400  NGVD 29 (11/26/84)  123.421  (m)          404.92   (f) ADJUSTED    2 0
 JV2400
 JV2400.Superseded values are not recommended for survey control.
 JV2400
 JV2400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2400.See file dsdata.pdf to determine how the superseded data were derived.
 JV2400
 JV2400_MARKER: DS = TRIANGULATION STATION DISK
 JV2400_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2400_STAMPING: CARMEL 1958
 JV2400_MARK LOGO: CGS
 JV2400_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2400+STABILITY: SURFACE MOTION
 JV2400_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2400+SATELLITE: SATELLITE OBSERVATIONS - March 31, 2014
 JV2400
 JV2400  HISTORY     - Date     Condition        Report By
 JV2400  HISTORY     - 1958     MONUMENTED       CGS
 JV2400  HISTORY     - 1958     GOOD             CGS
 JV2400  HISTORY     - 1975     GOOD             NGS
 JV2400  HISTORY     - 20140331 GOOD             NAGEL
 JV2400
 JV2400                          STATION DESCRIPTION
 JV2400
 JV2400'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2400'STATION IS LOCATED ATOP A SMALL CUT EMBANKMENT ALONG THE NORTH
 JV2400'SIDE OF U.S. HIGHWAY NO. 40 ABOUT 5.0 MILES EAST-SOUTHEAST OF
 JV2400'FREDERICK, ABOUT 3.3 MILES WEST-NORTHWEST OF NEW MARKET, AND ABOUT
 JV2400'1.7 MILES EAST OF THE VILLAGE OF BARTONSVILLE.  STATION IS 33 FEET
 JV2400'SOUTH OF A GRAVEL DRIVEWAY, 93-1/2 FEET WEST-SOUTHWEST OF FENCE
 JV2400'CORNER AND 76 FEET NORTH OF APPROXIMATE CENTERLINE OF U.S.
 JV2400'HIGHWAY NO. 40 (WEST BOUND).  THE MARK IS SET FLUSH AND THE DISK
 JV2400'IS STAMPED CARMEL 1958.
 JV2400'
 JV2400'REFERENCE MARK NO. 1 IS 22 FEET SOUTH OF APPROXIMATE CENTERLINE OF
 JV2400'GRAVEL DRIVEWAY AND 71 FEET WEST OF FENCE CORNER.  THE MARK IS FLUSH
 JV2400'AND THE DISK IS STAMPED CARMEL NO 1 1958.
 JV2400'
 JV2400'REFERENCE MARK NO. 2 IS 83 FEET EAST-SOUTHEAST OF UTILITY POLE AND
 JV2400'22 FEET SOUTH OF GRAVEL DRIVEWAY.  THE MARK IS SET FLUSH AND THE
 JV2400'DISK IS STAMPED CARMEL NO 2 1958.
 JV2400'
 JV2400'TO REACH FROM THE OVERPASS AT U.S. HIGHWAY NO. 40 BY-PASS AND
 JV2400'U.S. HIGHWAY NO. 40 (EAST BOUND), GO EASTERLY ON U.S. HIGHWAY NO. 40
 JV2400'FOR 2.85 MILES TO CROSSOVER AT SIDE ROAD LEFT.  TURN LEFT AND
 JV2400'CONTINUE NORTHERLY ACROSS WEST BOUND TRAFFIC LANE FOR 25
 JV2400'YARDS.  TURN RIGHT AND GO EASTERLY ON GRAVEL ROAD FOR 0.1 MILE TO
 JV2400'STATION ON RIGHT (SOUTH) SIDE OF DRIVEWAY AS DESCRIBED.
 JV2400'
 JV2400'STATION LONG AND DENNIS ARE VISIBLE FROM GROUND AND MAY BE USED AS
 JV2400'AZIMUTH MARK.
 JV2400'
 JV2400'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV2400
 JV2400                          STATION RECOVERY (1958)
 JV2400
 JV2400'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2400'4.3 MI E FROM FREDERICK.
 JV2400'ABOUT 4.3 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2400'AT FREDERICK, ON THE TOPO OF A CUT BANK, 76 FEET NORTH OF THE
 JV2400'CENTER LINE OF THE WEST BOUND LANE, 93 FEET WEST OF A FENCE
 JV2400'CORNER, 32 1/2 FEET SOUTH OF THE CENTER LINE OF A GRAVEL ROAD,
 JV2400'35 YARDS SOUTHEAST OF A POWER LINE POLE, ABOUT 20 FEET ABOVE
 JV2400'THE LEVEL OF THE HIGHWAY AND SET IN THE TOP OF A CONRETE POST
 JV2400'FLUSH WITH THE GROUND.
 JV2400
 JV2400                          STATION RECOVERY (1975)
 JV2400
 JV2400'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV2400'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JV2400'AS DESCRIBED IN THE 1958 DESCRIPTION.  THE DISTANCES AND DIRECTIONS
 JV2400'TO ALL MARKS WERE WITHIN CLOSE AGREEMENT WITH THE 1958
 JV2400'OBSERVATIONS.
 JV2400'
 JV2400'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV2400'1-3/4 MILES EAST OF BARTONSVILLE.
 JV2400
 JV2400                          STATION RECOVERY (2014)
 JV2400
 JV2400'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2014 (SMN)
 JV2400'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7757 ***********************************************************************
 HV7757  DESIGNATION -  CAROLE
 HV7757  PID         -  HV7757
 HV7757  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7757  COUNTRY     -  US
 HV7757  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7757
 HV7757                         *CURRENT SURVEY CONTROL
 HV7757  ______________________________________________________________________
 HV7757* NAD 83(1991) POSITION- 38 58 57.94171(N) 076 58 57.41717(W)   ADJUSTED
 HV7757* NAVD 88 ORTHO HEIGHT -    68.8   (meters)      226.    (feet) VERTCON3
 HV7757  ______________________________________________________________________
 HV7757  GEOID HEIGHT    -        -32.048 (meters)                     GEOID18
 HV7757  LAPLACE CORR    -         -3.23  (seconds)                    DEFLEC18
 HV7757  HORZ ORDER      -  FIRST
 HV7757
 HV7757.The horizontal coordinates were established by classical geodetic methods
 HV7757.and adjusted by the National Geodetic Survey in January 1992.
 HV7757
 HV7757.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7757.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7757
 HV7757.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7757.GEOID18 height accuracy estimate available here.
 HV7757
 HV7757.Click photographs - Photos may exist for this station.
 HV7757
 HV7757.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7757
 HV7757. The following values were computed from the NAD 83(1991) position.
 HV7757
 HV7757;                    North         East     Units Scale Factor Converg.
 HV7757;SPC MD       -   146,092.716   401,506.216   MT  0.99995158   +0 00 39.3
 HV7757;SPC MD       -   479,305.85  1,317,274.98   sFT  0.99995158   +0 00 39.3
 HV7757;UTM  18      - 4,316,733.147   328,272.940   MT  0.99996314   -1 14 51.1
 HV7757
 HV7757!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7757!SPC MD       -   0.99999424  x   0.99995158  =   0.99994582
 HV7757!UTM  18      -   0.99999424  x   0.99996314  =   0.99995738
 HV7757
 HV7757:                Primary Azimuth Mark                     Grid Az
 HV7757:SPC MD       -  COLLEGE PARK UNIV OF MD CHAPEL           087 32 22.8
 HV7757:UTM  18      -  COLLEGE PARK UNIV OF MD CHAPEL           088 47 53.2
 HV7757
 HV7757_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2827216733(NAD 83)
 HV7757
 HV7757|---------------------------------------------------------------------|
 HV7757| PID    Reference Object                     Distance      Geod. Az  |
 HV7757|                                                           dddmmss.s |
 HV7757| JV5952 HILLANDALE GOOD SHEPHERD CH         APPROX. 3.5 KM 0065619.5 |
 HV7757| CX2177 CAROLE RM 1                          24.624 METERS 04116     |
 HV7757| HV7747 COLLEGE PARK UNIV METH CHURCH       APPROX. 2.7 KM 0861252.0 |
 HV7757| HV7745 COLLEGE PARK UNIV OF MD CHAPEL      APPROX. 3.6 KM 0873302.1 |
 HV7757| HV7746 HYATTSVILLE FIRST METH CHURCH       APPROX. 3.3 KM 1263257.5 |
 HV7757| HV7743 HYATTSVILLE FIRST BAP CH SPIRE      APPROX. 4.3 KM 1321900.8 |
 HV7757| HV7739 HYATTSVILLE ST MATTHEWS CH          APPROX. 3.3 KM 1341821.6 |
 HV7757| HV7744 HYATTSVILLE COUNTY RAD MAST         APPROX. 5.0 KM 1351910.2 |
 HV7757| HV7846 LEWISDALE TRINITY BAP CH SPIRE      APPROX. 0.9 KM 1514128.5 |
 HV7757| HV7853 HYATTSVILLE AGER RD METH CH         APPROX. 1.9 KM 1580043.1 |
 HV7757| HV7738 HYATTSVILLE RAD STA WRC MAST        APPROX. 2.5 KM 1610613.3 |
 HV7757| HV7752 HYATTSVILLE UNIV CITY TANK           28.010 METERS 20632     |
 HV7757| HV7748 TAKOMA PARK PEPCO MICROWAVE         APPROX. 2.0 KM 2220820.9 |
 HV7757| HV7749 TAKOMA PARK LADY OF SORROWS CH      APPROX. 0.9 KM 2325111.5 |
 HV7757| HV4485 SILVER SPR RAD STA WGAY FM MST      APPROX. 3.9 KM 2834913.7 |
 HV7757| HV4483 SILVER SPR CP TEL MICROWAVE         APPROX. 4.4 KM 2904129.6 |
 HV7757| CX2178 CAROLE RM 2                          24.151 METERS 29840     |
 HV7757|---------------------------------------------------------------------|
 HV7757
 HV7757                          SUPERSEDED SURVEY CONTROL
 HV7757
 HV7757  NAD 83(1986)-  38 58 57.94102(N)    076 58 57.42803(W) AD(       ) 1
 HV7757  NAD 27      -  38 58 57.54449(N)    076 58 58.51390(W) AD(       ) 1
 HV7757  NGVD 29 (07/19/86)   69.0    (m)          226.     (f) VERT ANG       
 HV7757
 HV7757.Superseded values are not recommended for survey control.
 HV7757
 HV7757.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7757.See file dsdata.pdf to determine how the superseded data were derived.
 HV7757
 HV7757_MARKER: DS = TRIANGULATION STATION DISK
 HV7757_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7757_STAMPING: CAROLE 1969
 HV7757_MARK LOGO: CGS
 HV7757_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7757+STABILITY: SURFACE MOTION
 HV7757
 HV7757  HISTORY     - Date     Condition        Report By
 HV7757  HISTORY     - 1970     MONUMENTED       NGS
 HV7757
 HV7757                          STATION DESCRIPTION
 HV7757
 HV7757'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7757'THE STATION IS ABOUT 2 MILES WEST OF COLLEGE PARK, 1-3/4 MILES NORTH
 HV7757'EAST OF THE MARYLAND-DISTRICT OF COLUMBIA BOUNDARY LINE, 3/4 MILE
 HV7757'SOUTHEAST OF THE MONTGOMERY-PRINCE GEORGES COUNTY LINE, AND IN
 HV7757'LANGLEY PARK ON PROPERTY OWNED BY THE WASHINGTON SUBURBAN
 HV7757'SANITATION COMMISSION.
 HV7757'
 HV7757'TO REACH THE STATION FROM THE INTERCHANGE OF INTERSTATE HIGHWAY
 HV7757'495 AND STATE HIGHWAY 650, NEW HAMPSHIRE AVENUE, GO SOUTH ON NEW
 HV7757'HAMPSHIRE AVENUE FOR 2.2 MILES TO THE JUNCTION WITH UNIVERSITY
 HV7757'BOULEVARD.  CONTINUE SOUTHERLY ON NEW HAMPSHIRE AVENUE FOR 0.55
 HV7757'MILE TO A CROSS-STREET, ERSKIN STREET.  TURN LEFT ONTO ERSKIN
 HV7757'STREET AND GO EAST FOR 0.3 MILE TO ELSON STREET.  TURN LEFT AND GO
 HV7757'NORTHEAST ON ELSON STREET FOR 0.1 MILE TO 16TH STREET.
 HV7757'TURN LEFT AND GO NORTHWEST ON 16TH STREET FOR 0.1 MILE TO HANNON
 HV7757'STREET.  TURN RIGHT AND GO NORTHEAST ON HANNON STREET
 HV7757'FOR 0.05 MILE TO THE HYATTSVILLE UNIVERSITY CITY WATER
 HV7757'TANK AND THE STATION ON THE RIGHT WITHIN A FENCED AREA.
 HV7757'
 HV7757'THE STATION MARK IS A STANDARD DISK, STAMPED CAROLE 1969, SET IN
 HV7757'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER THAT
 HV7757'PROJECTS 1 INCH ABOVE THE SURFACE OF THE GROUND.  IT IS 81.6 FEET
 HV7757'EAST OF A FIRE HYDRANT, 80.5 FEET SOUTHEAST OF A
 HV7757'SOUTHWEST-NORTHEAST WOVEN WIRE FENCE AND 56.6 FEET SOUTH OF AN
 HV7757'EAST-WEST WOVEN WIRE FENCE.  THE UNDERGROUND MARK IS 40 INCHES
 HV7757'BELOW THE GROUND SURFACE.
 HV7757'
 HV7757'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CAROLE NO 1 1969,
 HV7757'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7757'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 99.0 FEET EAST OF A FENCE
 HV7757'CORNER, 1.8 FEET SOUTH OF THE EAST-WEST FENCE, AND IS ABOUT 4
 HV7757'FEET LOWER IN ELEVATION THAN THE STATION.
 HV7757'
 HV7757'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CAROLE NO 2 1969,
 HV7757'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7757'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 60.5 FEET NORTHEAST OF THE
 HV7757'NORTHEAST ONE OF TWO GATE POSTS, 10.2 FEET WEST OF A UTILITY
 HV7757'BOX, 10.2 FEET SOUTHEAST OF THE NORTHEAST-SOUTHWEST FENCE, AND IS
 HV7757'ABOUT 1 FOOT LOWER IN ELEVATION THAN THE STATION.
 HV7757'
 HV7757'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6211 ***********************************************************************
 DN6211  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6211  DESIGNATION -  CARPENTERS POINT 2008
 DN6211  PID         -  DN6211
 DN6211  STATE/COUNTY-  MD/CECIL
 DN6211  COUNTRY     -  US
 DN6211  USGS QUAD   -  HAVRE DE GRACE (2016)
 DN6211
 DN6211                         *CURRENT SURVEY CONTROL
 DN6211  ______________________________________________________________________
 DN6211* NAD 83(2011) POSITION- 39 32 31.73021(N) 076 00 16.11391(W)   ADJUSTED
 DN6211* NAD 83(2011) ELLIP HT-   -28.451 (meters)        (06/27/12)   ADJUSTED
 DN6211* NAD 83(2011) EPOCH   -  2010.00
 DN6211* NAVD 88 ORTHO HEIGHT -     4.78  (meters)       15.7   (feet) GPS OBS
 DN6211  ______________________________________________________________________
 DN6211  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6211  GEOID HEIGHT    -        -33.211 (meters)                     GEOID03
 DN6211  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 DN6211  NAD 83(2011) X  -  1,191,141.864 (meters)                     COMP
 DN6211  NAD 83(2011) Y  - -4,778,999.546 (meters)                     COMP
 DN6211  NAD 83(2011) Z  -  4,038,895.067 (meters)                     COMP
 DN6211  LAPLACE CORR    -         -0.90  (seconds)                    DEFLEC18
 DN6211
 DN6211  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6211  Standards:
 DN6211         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6211            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6211  -------------------------------------------------------------------
 DN6211  NETWORK    0.56   1.10           0.26   0.18   0.56     -0.05929768
 DN6211  -------------------------------------------------------------------
 DN6211  Click here for local accuracies and other accuracy information.
 DN6211
 DN6211.The horizontal coordinates were established by GPS observations
 DN6211.and adjusted by the National Geodetic Survey in June 2012.
 DN6211
 DN6211.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6211.been affixed to the stable North American tectonic plate. See 
 DN6211.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6211
 DN6211.The horizontal coordinates are valid at the epoch date displayed above
 DN6211.which is a decimal equivalence of Year/Month/Day.
 DN6211
 DN6211.The orthometric height was determined by GPS observations and a
 DN6211.high-resolution geoid model using precise GPS observation and
 DN6211.processing techniques.
 DN6211
 DN6211.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6211.GEOID18 height accuracy estimate available here.
 DN6211
 DN6211.Click photographs - Photos may exist for this station.
 DN6211
 DN6211.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6211
 DN6211.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6211
 DN6211.The ellipsoidal height was determined by GPS observations
 DN6211.and is referenced to NAD 83.
 DN6211
 DN6211. The following values were computed from the NAD 83(2011) position.
 DN6211
 DN6211;                    North         East     Units Scale Factor Converg.
 DN6211;SPC MD       -   208,661.014   485,576.470   MT  1.00001742   +0 37 29.4
 DN6211;SPC MD       -   684,582.01  1,593,095.47   sFT  1.00001742   +0 37 29.4
 DN6211;UTM  18      - 4,377,423.764   413,687.473   MT  0.99969172   -0 38 22.3
 DN6211
 DN6211!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6211!SPC MD       -   1.00000446  x   1.00001742  =   1.00002188
 DN6211!UTM  18      -   1.00000446  x   0.99969172  =   0.99969618
 DN6211
 DN6211_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1368777423(NAD 83)
 DN6211
 DN6211                          SUPERSEDED SURVEY CONTROL
 DN6211
 DN6211  NAD 83(2007)-  39 32 31.73034(N)    076 00 16.11476(W) AD(2002.00) 1
 DN6211  ELLIP H (02/23/12)  -28.417  (m)                       GP(2002.00) 4 1
 DN6211
 DN6211.Superseded values are not recommended for survey control.
 DN6211
 DN6211.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6211.See file dsdata.pdf to determine how the superseded data were derived.
 DN6211
 DN6211_MARKER: DD = SURVEY DISK
 DN6211_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6211_STAMPING: CARPENTERS POINT 2008
 DN6211_MARK LOGO: MD-015
 DN6211_PROJECTION: FLUSH
 DN6211_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6211_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6211+STABILITY: SURFACE MOTION
 DN6211_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6211+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6211
 DN6211  HISTORY     - Date     Condition        Report By
 DN6211  HISTORY     - 20081204 MONUMENTED       GWS
 DN6211
 DN6211                          STATION DESCRIPTION
 DN6211
 DN6211'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6211'THE STATION IS LOCATED ABOUT 5.2 MI (8.4 KM) SOUTHWEST OF NORTH EAST,
 DN6211'4.7 MI (7.6 KM) EAST OF HAVRE DE GRACE AND 2.6 MI (4.2 KM) SOUTHWEST
 DN6211'OF CHARLESTOWN NEAR THE END OF THE PENINSULA AT CARPENTER'S POINT.
 DN6211'
 DN6211'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND WEST OLD
 DN6211'PHILADELPHIA ROAD (MD ROUTE 7) APPROXIMATELY 1.5 MI (2.4 KM) NORTHEAST
 DN6211'OF JACKSON ON ROUTE 40, PROCEED SOUTHEAST ON WEST OLD PHILADELPHIA
 DN6211'ROAD FOR 1.16 MI (1.9 KM) TO A Y-FORK.  BEAR RIGHT AND GO EAST ON
 DN6211'BALTIMORE STREET (MD ROUTE 267) FOR 0.45 MI (0.7 KM) TO A SIDE ROAD ON
 DN6211'THE RIGHT.  TURN RIGHT AND GO SOUTHWEST, SOUTH AND THEN EAST ON
 DN6211'CARPENTERS POINT ROAD (MD ROUTE 164) FOR 3.47 MI (5.6 KM) TO AN
 DN6211'INTERSECTION.  TURN RIGHT AND GO EAST ON RIVERSIDE LANE FOR 0.03 MI
 DN6211'(0.0 KM) TO THE STATION ON THE LEFT.
 DN6211'
 DN6211'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6211'CONCRETE MONUMENT ON THE NORTH SIDE OF RIVERSIDE LANE MIDWAY BETWEEN
 DN6211'CARPENTERS POINT ROAD AND CHERRY LANE, 6.3 FT (1.9 M) NORTHEAST OF A
 DN6211'GRAVEL DRIVEWAY, 71.0 FT (21.6 M) NORTHEAST OF A UTILITY POLE
 DN6211'(CONECTIV 35712/36085) ON THE SOUTHEAST SIDE OF RIVERSIDE LANE AND
 DN6211'122.1 FT (37.2 M) WEST-SOUTHWEST OF A UTILITY POLE (CONECTIV
 DN6211'35723/36072) ALSO ON THE SOUTHEAST SIDE OF RIVERSIDE LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7122 ***********************************************************************
 HV7122  DESIGNATION -  CARR
 HV7122  PID         -  HV7122
 HV7122  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7122  COUNTRY     -  US
 HV7122  USGS QUAD   -  SOUTH RIVER (2016)
 HV7122
 HV7122                         *CURRENT SURVEY CONTROL
 HV7122  ______________________________________________________________________
 HV7122* NAD 83(1991) POSITION- 38 53 17.91191(N) 076 31 22.24343(W)   ADJUSTED
 HV7122* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV7122  ______________________________________________________________________
 HV7122  GEOID HEIGHT    -        -33.422 (meters)                     GEOID18
 HV7122  LAPLACE CORR    -         -3.87  (seconds)                    DEFLEC18
 HV7122  HORZ ORDER      -  THIRD
 HV7122
 HV7122.The horizontal coordinates were established by classical geodetic methods
 HV7122.and adjusted by the National Geodetic Survey in January 1992.
 HV7122
 HV7122.The orthometric height was scaled from a topographic map.
 HV7122
 HV7122.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7122.GEOID18 height accuracy estimate available here.
 HV7122
 HV7122.Click photographs - Photos may exist for this station.
 HV7122
 HV7122.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7122
 HV7122. The following values were computed from the NAD 83(1991) position.
 HV7122
 HV7122;                    North         East     Units Scale Factor Converg.
 HV7122;SPC MD       -   135,715.681   441,396.829   MT  0.99994987   +0 17 58.1
 HV7122;SPC MD       -   445,260.53  1,448,149.43   sFT  0.99994987   +0 17 58.1
 HV7122;UTM  18      - 4,305,484.287   367,923.753   MT  0.99981480   -0 57 22.3
 HV7122
 HV7122!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7122!SPC MD       -   1.00000497  x   0.99994987  =   0.99995484
 HV7122!UTM  18      -   1.00000497  x   0.99981480  =   0.99981977
 HV7122
 HV7122:                Primary Azimuth Mark                     Grid Az
 HV7122:SPC MD       -  ISLAND                                   248 11 51.5
 HV7122:UTM  18      -  ISLAND                                   249 27 11.9
 HV7122
 HV7122_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6792305484(NAD 83)
 HV7122
 HV7122|---------------------------------------------------------------------|
 HV7122| PID    Reference Object                     Distance      Geod. Az  |
 HV7122|                                                           dddmmss.s |
 HV7122| CX2179 CARR RM 1                             8.377 METERS 01523     |
 HV7122| HV7108 BEER                                304.156 METERS 11624     |
 HV7122| HV7157 ISLAND                              APPROX. 1.3 KM 2482949.6 |
 HV7122| HV7161 CAMP LETTS TANK                     APPROX. 0.6 KM 2904411.9 |
 HV7122|---------------------------------------------------------------------|
 HV7122
 HV7122                          SUPERSEDED SURVEY CONTROL
 HV7122
 HV7122  NAD 83(1986)-  38 53 17.90822(N)    076 31 22.25492(W) AD(       ) 3
 HV7122  NAD 27      -  38 53 17.50100(N)    076 31 23.39500(W) AD(       ) 3
 HV7122
 HV7122.Superseded values are not recommended for survey control.
 HV7122
 HV7122.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7122.See file dsdata.pdf to determine how the superseded data were derived.
 HV7122
 HV7122_MARKER: DS = TRIANGULATION STATION DISK
 HV7122_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7122
 HV7122  HISTORY     - Date     Condition        Report By
 HV7122  HISTORY     - 1933     MONUMENTED       CGS
 HV7122  HISTORY     - 1943     GOOD             CGS
 HV7122  HISTORY     - 1960     GOOD             CGS
 HV7122  HISTORY     - 1973     MARK NOT FOUND   MDDNR
 HV7122  HISTORY     - 1977     MARK NOT FOUND   NGS
 HV7122
 HV7122                          STATION DESCRIPTION
 HV7122
 HV7122'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7122'STATION IS ON THE N SIDE OF RHODE RIVER ABOUT 1-1/4 MILES ABOUT
 HV7122'THE MOUTH.  THE STATION IS AT CARRS WHARF ON THE PROPERTY OF MR.
 HV7122'NORMAN E. CARR.  IT IS AT THE EDGE OF THE LAWN IN THE SIDE OF THE
 HV7122'BANK EXTENDING DOWN FROM MR. CARRS HOUSE.  IT IS ABOUT 100 FEET
 HV7122'FROM THE INSHORE END OF THE WHARF, 55 FEET N OF THE RIVERS EDGE
 HV7122'AND ABOUT 200 FEET S OF MR. CARRS HOUSE.
 HV7122'
 HV7122'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISK SET IN
 HV7122'CONCRETE AS DESCRIBED.
 HV7122
 HV7122                          STATION RECOVERY (1943)
 HV7122
 HV7122'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7122'THE STATION AND REFERENCE MARK WERE RECOVERED IN GOOD CONDITION.
 HV7122'THE STATION IS 74.2 FEET FROM THE INSHORE END OF THE DOCK AND 50.9
 HV7122'FEET FROM THE CORNER OF A CONCRETE BULKHEAD AT CARRS PROPERTY.
 HV7122
 HV7122                          STATION RECOVERY (1960)
 HV7122
 HV7122'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7122'STATION AND REFERENCE MARK RECOVERED IN GOOD CONDITION.  STATION
 HV7122'MARK IS STAMPED CARR 1933.  REFERENCE MARK 1 IN STAMPED CARR NO 1
 HV7122'1933. THE ORIGINAL DESCRIPTION IS COMPLETE AND ADEQUATE WITH THE
 HV7122'FOLLOWING EXCEPTIONS.  THE STATION IS 99.0 FT. EAST OF THE INSHORE
 HV7122'END OF THE PIER AND 50.9 FT EAST OF THE CORNER OF A CONCRETE
 HV7122'BULKHEAD AT THE CARRS PROPERTY.
 HV7122
 HV7122                          STATION RECOVERY (1973)
 HV7122
 HV7122'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEW)
 HV7122'CARR 1933 NOT RECOVERED.
 HV7122'
 HV7122'CARR NO 1 1933 NOT RECOVERED.
 HV7122'
 HV7122'STA. AND RM NOT RECOVERED BECAUSE OF HEAVY BRUSH AND LACK OF
 HV7122'SUFFICIENT RECOVERY NOTES.  MARKS ARE PROB. STILL IN PLACE.
 HV7122'
 HV7122'DISTANCE AND DIRECTION FROM NEAREST TOWN--1 MILE W OF BEVERLY BEACH.
 HV7122
 HV7122                          STATION RECOVERY (1977)
 HV7122
 HV7122'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HV7122'THE STATION WAS SEARCHED FOR BUT WAS NOT RECOVERED, THE OLD WHARF,
 HV7122'CONCRETE BULKHEAD AND PIER MENTIONED IN THE OLD DESCRIPTION HAS
 HV7122'BEEN WASHED OUT AND THE AREA HAS GROWN OVER WITH THICK BRUSH AND
 HV7122'WEEDS. THE STATION MAY STILL EXIST.
 HV7122'
 HV7122'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1 MILE SOUTH OF
 HV7122'HOLLY HILL HARBOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7456 ***********************************************************************
 HV7456  DESIGNATION -  CARR
 HV7456  PID         -  HV7456
 HV7456  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7456  COUNTRY     -  US
 HV7456  USGS QUAD   -  LANHAM (2016)
 HV7456
 HV7456                         *CURRENT SURVEY CONTROL
 HV7456  ______________________________________________________________________
 HV7456* NAD 83(1991) POSITION- 38 57 48.15612(N) 076 52 05.61758(W)   ADJUSTED
 HV7456* NAVD 88 ORTHO HEIGHT -    37.    (meters)      121.    (feet) SCALED
 HV7456  ______________________________________________________________________
 HV7456  GEOID HEIGHT    -        -32.336 (meters)                     GEOID18
 HV7456  LAPLACE CORR    -         -5.13  (seconds)                    DEFLEC18
 HV7456  HORZ ORDER      -  SECOND
 HV7456
 HV7456.The horizontal coordinates were established by classical geodetic methods
 HV7456.and adjusted by the National Geodetic Survey in January 1992.
 HV7456
 HV7456.The orthometric height was scaled from a topographic map.
 HV7456
 HV7456.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7456.GEOID18 height accuracy estimate available here.
 HV7456
 HV7456.Click photographs - Photos may exist for this station.
 HV7456
 HV7456.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7456
 HV7456. The following values were computed from the NAD 83(1991) position.
 HV7456
 HV7456;                    North         East     Units Scale Factor Converg.
 HV7456;SPC MD       -   143,948.907   411,420.331   MT  0.99995101   +0 04 57.7
 HV7456;SPC MD       -   472,272.37  1,349,801.54   sFT  0.99995101   +0 04 57.7
 HV7456;UTM  18      - 4,314,372.200   338,137.510   MT  0.99992262   -1 10 30.1
 HV7456
 HV7456!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7456!SPC MD       -   0.99999930  x   0.99995101  =   0.99995031
 HV7456!UTM  18      -   0.99999930  x   0.99992262  =   0.99992192
 HV7456
 HV7456_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3813714372(NAD 83)
 HV7456
 HV7456                          SUPERSEDED SURVEY CONTROL
 HV7456
 HV7456  NAD 83(1986)-  38 57 48.15444(N)    076 52 05.62882(W) AD(       ) 2
 HV7456  NAD 27      -  38 57 47.75554(N)    076 52 06.72761(W) AD(       ) 2
 HV7456
 HV7456.Superseded values are not recommended for survey control.
 HV7456
 HV7456.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7456.See file dsdata.pdf to determine how the superseded data were derived.
 HV7456
 HV7456_MARKER: DE = TRAVERSE STATION DISK
 HV7456_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV7456_SP_SET: CURB
 HV7456_STAMPING: CARR 1958
 HV7456_MARK LOGO: CGS
 HV7456_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7456
 HV7456  HISTORY     - Date     Condition        Report By
 HV7456  HISTORY     - 1958     MONUMENTED       CGS
 HV7456  HISTORY     - 1974     GOOD             NGS
 HV7456
 HV7456                          STATION DESCRIPTION
 HV7456
 HV7456'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7456'STATION IS LOCATED IN THE CARROLTON ESTATES HOUSING DEVELOPMENT
 HV7456'AREA ABOUT 9-1/2 MILES NORTHEAST OF THE CENTER OF WASHINGTON
 HV7456'D.C. AND ABOUT 0.4 MILE NORTH OF U.S. HIGHWAY NO. 50.  STATION
 HV7456'IS 20 FEET NORTH OF APPROXIMATE CENTERLINE OF MADISON AVENUE, 34
 HV7456'FEET WEST OF THE APPROXIMATE CENTERLINE OF 87TH AVENUE, 15 FEET
 HV7456'SOUTHWEST OF STREET MARKER AND 6-1/2 FEET SOUTH OF SOUTH EDGE OF
 HV7456'SIDEWALK.  THE MARK IS A STANDARD TRAVERSE DISK CEMENTED IN A
 HV7456'DRILL IN CURB AND STAMPED CARR 1958.
 HV7456'
 HV7456'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 50 AND STATE HIGHWAY
 HV7456'NO. 564 WHICH IS ABOUT 10 MILES NORTHEAST OF WASHINGTON D.C., GO
 HV7456'SOUTHWEST ON U.S. HIGHWAY NO. 50 FOR 0.5 MILE TO ENTRANCE TO
 HV7456'CARROLTON ESTATES ON RIGHT.  TURN RIGHT INTO CARROLTON ESTATES AND
 HV7456'GO NORTHERLY ON SURFACED ROAD (85TH AVENUE) FOR 0.25 MILE TO T
 HV7456'INTERSECTION JUST AFTER CROSSING DRAINAGE DITCH.  TURN LEFT AND
 HV7456'GO NORTHERLY ON WESTBROOK DRIVE FOR 0.1 MILE TO MADISON AVENUE
 HV7456'ON RIGHT.  TURN RIGHT AND GO EASTERLY ON MADISON AVENUE FOR
 HV7456'0.1 MILE TO T INTERSECTION AND STATION AS DESCRIBED.
 HV7456
 HV7456                          STATION RECOVERY (1974)
 HV7456
 HV7456'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV7456'THE STATION WAS RECOVERED AND FOUND IN GOOD CONDITION AS DESCRIBED IN
 HV7456'THE 1958 DESCRIPTION.  THIS STATION WAS USED AS AN AZIMUTH MARK FROM
 HV7456'TRAVERSE STATION ESSEX 1958.  THERE ARE NO REFERENCE MARKS AT THIS
 HV7456'STATION NOR IS THERE ANY PLACE TO SET A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5945 ***********************************************************************
 HV5945  DESIGNATION -  CARRIE MSFC 1910
 HV5945  PID         -  HV5945
 HV5945  STATE/COUNTY-  MD/DORCHESTER
 HV5945  COUNTRY     -  US
 HV5945  USGS QUAD   -  CHURCH CREEK (2016)
 HV5945
 HV5945                         *CURRENT SURVEY CONTROL
 HV5945  ______________________________________________________________________
 HV5945* NAD 83(1991) POSITION- 38 32 56.79612(N) 076 14 42.76071(W)   ADJUSTED
 HV5945* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5945  ______________________________________________________________________
 HV5945  GEOID HEIGHT    -        -34.681 (meters)                     GEOID18
 HV5945  LAPLACE CORR    -         -5.37  (seconds)                    DEFLEC18
 HV5945  HORZ ORDER      -  THIRD
 HV5945
 HV5945.The horizontal coordinates were established by classical geodetic methods
 HV5945.and adjusted by the National Geodetic Survey in January 1992.
 HV5945
 HV5945.The orthometric height was scaled from a topographic map.
 HV5945
 HV5945.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5945.GEOID18 height accuracy estimate available here.
 HV5945
 HV5945.Click photographs - Photos may exist for this station.
 HV5945
 HV5945.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5945
 HV5945. The following values were computed from the NAD 83(1991) position.
 HV5945
 HV5945;                    North         East     Units Scale Factor Converg.
 HV5945;SPC MD       -    98,226.685   465,794.589   MT  0.99996601   +0 28 25.4
 HV5945;SPC MD       -   322,265.38  1,528,194.41   sFT  0.99996601   +0 28 25.4
 HV5945;UTM  18      - 4,267,477.640   391,492.059   MT  0.99974499   -0 46 33.9
 HV5945
 HV5945!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5945!SPC MD       -   1.00000532  x   0.99996601  =   0.99997133
 HV5945!UTM  18      -   1.00000532  x   0.99974499  =   0.99975031
 HV5945
 HV5945:                Primary Azimuth Mark                     Grid Az
 HV5945:SPC MD       -  LOUISE MSFC 1910                         150 35 32.9
 HV5945:UTM  18      -  LOUISE MSFC 1910                         151 50 32.2
 HV5945
 HV5945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9149267477(NAD 83)
 HV5945
 HV5945|---------------------------------------------------------------------|
 HV5945| PID    Reference Object                     Distance      Geod. Az  |
 HV5945|                                                           dddmmss.s |
 HV5945| HV5950 BAYLY MSFC 1910                     314.791 METERS 00239     |
 HV5945| HV5896 LOUISE MSFC 1910                    APPROX. 0.5 KM 1510358.3 |
 HV5945| HV5894 JENIFER MSFC 1910                   372.173 METERS 27817     |
 HV5945| HV5956 HENRY MSFC 1910                     482.649 METERS 3092211.1 |
 HV5945|---------------------------------------------------------------------|
 HV5945
 HV5945                          SUPERSEDED SURVEY CONTROL
 HV5945
 HV5945  NAD 83(1986)-  38 32 56.79389(N)    076 14 42.77617(W) AD(       ) 3
 HV5945  NAD 27      -  38 32 56.38600(N)    076 14 43.96300(W) AD(       ) 3
 HV5945  USSD        -  38 32 56.77000(N)    076 14 43.74700(W) AD(       ) 3
 HV5945
 HV5945.Superseded values are not recommended for survey control.
 HV5945
 HV5945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5945.See file dsdata.pdf to determine how the superseded data were derived.
 HV5945
 HV5945_MARKER: Z = SEE DESCRIPTION
 HV5945_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5945_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5945+STABILITY: SURFACE MOTION
 HV5945
 HV5945  HISTORY     - Date     Condition        Report By
 HV5945  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5945  HISTORY     - 1941     GOOD             CGS
 HV5945  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5945
 HV5945                          STATION DESCRIPTION
 HV5945
 HV5945'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5945'ON THE EASTERN SHORE OF HUDSON CREEK, ON N SIDE OF ENTRANCE TO
 HV5945'BACK CREEK, AND ABOUT 3/4 MILE N OF CASONS POINT, NEAR EDGE OF
 HV5945'CULTIVATED FIELD, ABOUT 4 FEET ABOVE HIGH WATER, 15 YARDS E OF
 HV5945'SHORE, 3 YARDS E OF EDGE OF BANK, AND 160 YARDS N OF POINT AT N
 HV5945'SIDE OF ENTRANCE TO BACK CREEK.  STATION IS MARKED BY A HOLE IN
 HV5945'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5945'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5945'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5945'COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A
 HV5945'2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE
 HV5945'BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV5945'REFERENCE ARE AS FOLLOWS--LEFT CHIMNEY OF HOUSE, 3/8 MILE, S 45
 HV5945'DEG 23 MIN W.  CHIMNEY IN CENTER OF HOUSE, 3/8 MILE, S 73 DEG 0
 HV5945'MIN W.  LIGHTNING ROD ON RIGHT END OF HOUSE, 3/8 MILE, N 82 DEG 25
 HV5945'MIN W.  LEFT DORMER WINDOW OF HOUSE, 1/2 MILE, N 34 DEG 25 MIN W.
 HV5945'LEFT CHIMNEY OF HOUSE, 1-1/4 MILES, N 17 DEG 29 MIN W. NAIL IN
 HV5945'BLAZE IN 10-INCH CEDAR TREE, 9.35 METERS (30.68 FEET), N 12 DEG 5
 HV5945'MIN W.  NEAR PEAK OF BARN, 1/2 MILE, N 21 DEG 2 MIN E.  NEAR END
 HV5945'OF HOUSE, 1-1/4 MILES, N 76 DEG 13 MIN E. NEAR PEAK OF BARN, 2
 HV5945'MILES, S 82 DEG 39 MIN E.
 HV5945
 HV5945                          STATION RECOVERY (1941)
 HV5945
 HV5945'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HV5945'RECOVERED IN GOOD CONDITION AS DESCRIBED.  CEDAR TREE GIVEN AS
 HV5945'REFERENCE IS DOWN BUT STILL SHOWS BLAZE.
 HV5945
 HV5945                          STATION RECOVERY (1961)
 HV5945
 HV5945'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5945'STATION NOT RECOVERED AFTER A THOROUGH SEARCH OF THE AREA. STATION
 HV5945'MAY BE STILL INTACT BUT WILL BE EXTREMELY DIFFICULT TO RECOVER DUE
 HV5945'HIGH BRUSH AND THE INADEQUACY OF THE DESCRIPTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5355 ***********************************************************************
 JV5355  DESIGNATION -  CARROLL
 JV5355  PID         -  JV5355
 JV5355  STATE/COUNTY-  MD/BALTIMORE
 JV5355  COUNTRY     -  US
 JV5355  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5355
 JV5355                         *CURRENT SURVEY CONTROL
 JV5355  ______________________________________________________________________
 JV5355* NAD 83(1991) POSITION- 39 18 46.40040(N) 076 19 15.45674(W)   ADJUSTED
 JV5355* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5355  ______________________________________________________________________
 JV5355  GEOID HEIGHT    -        -33.155 (meters)                     GEOID18
 JV5355  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 JV5355  HORZ ORDER      -  SECOND
 JV5355
 JV5355.The horizontal coordinates were established by classical geodetic methods
 JV5355.and adjusted by the National Geodetic Survey in January 1992.
 JV5355
 JV5355.The orthometric height was scaled from a topographic map.
 JV5355
 JV5355.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5355.GEOID18 height accuracy estimate available here.
 JV5355
 JV5355.Click photographs - Photos may exist for this station.
 JV5355
 JV5355.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5355
 JV5355. The following values were computed from the NAD 83(1991) position.
 JV5355
 JV5355;                    North         East     Units Scale Factor Converg.
 JV5355;SPC MD       -   182,959.183   458,561.049   MT  0.99997889   +0 25 34.3
 JV5355;SPC MD       -   600,258.59  1,504,462.37   sFT  0.99997889   +0 25 34.3
 JV5355;UTM  18      - 4,352,330.938   386,119.214   MT  0.99975968   -0 50 13.2
 JV5355
 JV5355!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5355!SPC MD       -   1.00000524  x   0.99997889  =   0.99998413
 JV5355!UTM  18      -   1.00000524  x   0.99975968  =   0.99976492
 JV5355
 JV5355:                Primary Azimuth Mark                     Grid Az
 JV5355:SPC MD       -  BATTERY                                  340 59 06.4
 JV5355:UTM  18      -  BATTERY                                  342 14 53.9
 JV5355
 JV5355_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8611952330(NAD 83)
 JV5355
 JV5355|---------------------------------------------------------------------|
 JV5355| PID    Reference Object                     Distance      Geod. Az  |
 JV5355|                                                           dddmmss.s |
 JV5355| JV5315 EDGEWOOD ARSENAL LARGE TANK         APPROX.10.0 KM 0085903.1 |
 JV5355| CB1041 CARROLL RM 1                         25.680 METERS 26736     |
 JV5355| CB1042 CARROLL RM 2                         51.150 METERS 28003     |
 JV5355| JV5338 CARROLL ISLAND TOWER                APPROX. 1.7 KM 2975554.6 |
 JV5355| JV5360 BATTERY                             APPROX. 2.6 KM 3412440.7 |
 JV5355|---------------------------------------------------------------------|
 JV5355
 JV5355                          SUPERSEDED SURVEY CONTROL
 JV5355
 JV5355  NAD 83(1986)-  39 18 46.39464(N)    076 19 15.46472(W) AD(       ) 2
 JV5355  NAD 27      -  39 18 46.00900(N)    076 19 16.61500(W) AD(       ) 2
 JV5355
 JV5355.Superseded values are not recommended for survey control.
 JV5355
 JV5355.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5355.See file dsdata.pdf to determine how the superseded data were derived.
 JV5355
 JV5355_MARKER: DS = TRIANGULATION STATION DISK
 JV5355_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5355_STAMPING: CARROLL 1934
 JV5355_MARK LOGO: CGS
 JV5355_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5355+STABILITY: SURFACE MOTION
 JV5355
 JV5355  HISTORY     - Date     Condition        Report By
 JV5355  HISTORY     - 1934     MONUMENTED       CGS
 JV5355  HISTORY     - 1956     GOOD             CGS
 JV5355  HISTORY     - 1961     GOOD             CGS
 JV5355  HISTORY     - 1974     MARK NOT FOUND   NGS
 JV5355
 JV5355                          STATION DESCRIPTION
 JV5355
 JV5355'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5355'STATION CARROLL IS ON THE WESTERN SHORE OF GUNPOWDER RIVER ON A
 JV5355'MARSHY POINT CALLED CARROLL POINT.  STATION IS 40 FEET S OF
 JV5355'HIGH-WATER LINE OF N SHORE, 369 FEET W OF EXTREME EASTERLY POINT
 JV5355'AND 50 FEET SE OF EASTERLY EDGE OF WOODS AT SHORE.
 JV5355'
 JV5355'STATION AND REFERENCE MARKS, MARKED AS DESCRIBED IN NOTES 1A AND
 JV5355'11A BY STANDARD BRONZE DISK MARKERS CENTERED IN CONCRETE MONUMENT
 JV5355'36 INCHES DEEP, AND PROTRUDING 4 INCHES ABOVE THE GROUND.
 JV5355'
 JV5355'STATION IS MARKED CARROLL 1934 AND REFERENCE MARKS ARE STAMPED.
 JV5355'
 JV5355'BOTH REFERENCE MARKS ARE W OF THE STATION.
 JV5355'
 JV5355'TO REACH FROM BALTIMORE, GO E ON EASTERN AVENUE TO CARROLL ISLAND
 JV5355'ROAD, TURN RIGHT AND CONTINUE 4 MILES TO HUNTING LODGE.  TAKE
 JV5355'STRAIGHT ROAD TO SHORE AND WALK OUT TO END OF POINT.
 JV5355'
 JV5355'A 10-FOOT TOWER WAS BUILT AT THIS STATION.
 JV5355
 JV5355                          STATION RECOVERY (1956)
 JV5355
 JV5355'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (EHK)
 JV5355'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.
 JV5355'DISTANCES TO THE REFERENCE MARKS WERE NOT MEASURED BECAUSE THE
 JV5355'BRUSH BETWEEN THE STATION AND REFERENCE MARKS MAY HAVE BEEN STILL
 JV5355'CONTAMINATED WITH POISON GAS.  THE PUBLISHED DESCRIPTION IS
 JV5355'INADEQUATE.  A NEW DESCRIPTION FOLLOWS--
 JV5355'
 JV5355'THE STATION IS WITHIN THE MILITARY RESERVATION BOUNDARY OF THE
 JV5355'ARMY CHEMICAL CENTER ON THE NE TIP OF CARROLL POINT, AND ON THE W
 JV5355'SIDE AND AT THE MOUTH OF GUNPOWDER RIVER.  THIS AREA IS USED AS A
 JV5355'TESTING GROUND FOR POISONOUS GASSES.  THE STATION SITE SHOULD NOT
 JV5355'BE VISITED EITHER BY BOAT OR LAND WITHOUT FIRST OBTAINING
 JV5355'CLEARANCE FROM THE RANGE CONTROL OFFICER OF THE ARMY CHEMICAL
 JV5355'CENTER, EDGEWOOD, MARYLAND.
 JV5355'
 JV5355'THE STATION IS 19 FT. S OF THE HIGH-WATERLINE OF THE N SHORE OF
 JV5355'THE POINT, 100 FT. W OF THE EXTREME E POINT, 50 FT. SE OF THE E
 JV5355'EDGE OF THE WOODS AT THE SHORE, 10 FT. INSIDE A HIGH BARBED-WIRE
 JV5355'FENCE, AND 6 FT. W OF A 25-FT. CREOSOTED POLE.  THE STATION IS
 JV5355'MARKED BY A STANDARD TRIANGULATION DISK, STAMPED CARROLL 1934 AND
 JV5355'SET IN THE TOP OF A CONCRETE MONUMENT 8-IN. SQUARE PROJECTING 5
 JV5355'IN. ABOVE GROUND.
 JV5355'
 JV5355'REFERENCE MARK 1 IS W OF THE STATION, 40 FT. S-SW OF THE
 JV5355'HIGH-WATERLINE OF THE N SHORE OF THE POINT, AND 30 FT. INSIDE A
 JV5355'HIGH BARBED-WIRE FENCE.  THE REFERENCE MARK IS MARKED BY A
 JV5355'STANDARD REFERENCE-MARK DISK, STAMPED NO 1 1934 AND SET IN AN
 JV5355'8-IN. CONCRETE MONUMENT PROJECTING 8 IN. ABOVE GROUND.
 JV5355'
 JV5355'REFERENCE MARK 2 IS W OF THE STATION, 15 FT. S-SW OF THE
 JV5355'HIGH-WATERLINE OF THE N SHORE OF THE POINT, AND 8 FT. INSIDE A
 JV5355'HIGH BARBED-WIRE FENCE.  THE REFERENCE MARK IS MARKED BY A
 JV5355'STANDARD REFERENCE-MARK DISK, STAMPED NO 1 1934 AND SET IN THE
 JV5355'TOP OF AN 8-IN. CONCRETE BLOCK PROJECTING 3 IN. ABOVE GROUND.
 JV5355'
 JV5355'THE STATION IS BEST REACHED BY BOAT.  THE NARROW NECK OF MARSH
 JV5355'BETWEEN CARROLL POINT AND THE MAIN PORTION OF CARROLL ISLAND BARES
 JV5355'ONLY AT LOW WATER.
 JV5355'
 JV5355'TO REACH FROM BALTIMORE, GO E ON EASTERN BOULEVARD TO CARROLL
 JV5355'ISLAND ROAD, THEN RIGHT AND CONTINUE FOR 3 MI. TO A GUARDED GATE
 JV5355'ACROSS THE ROAD LEADING TO CARROLL ISLAND.  AT THIS POINT,
 JV5355'CLEARANCE MUST BE CHECKED.  AN ESCORT IS ASSIGNED TO REMAIN WITH
 JV5355'THE WORK PARTY AT ALL TIMES.  CONTINUE E TO THE COMMAND POST FOR A
 JV5355'SECURITY CHECK.  THEN E TO THE END OF THE ROAD AT THE SHORE AND
 JV5355'WALK ALONG THE SHORELINE AVOIDING THE WOODS TO THE END OF THE POINT.
 JV5355
 JV5355                          STATION RECOVERY (1961)
 JV5355
 JV5355'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5355'THE STATION AND REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 JV5355'CONDITION.  THE STATION IS STAMPED CARROLL 1934 AND THE R.M.S ARE
 JV5355'STAMPED NO 1 1934 AND NO 2 1934.  THE DISTANCE TO R.M. NO. 1 WAS
 JV5355'CHECKED AND FOUND TO BE 94.02 FEET.  THE DISTANCE TO R.M. NO. 2
 JV5355'COULD NOT BE CHECKED BECAUSE OF TREES ON LINE.
 JV5355'
 JV5355'THE DESCRIPTION BY E.H.K. IN 1956 IS COMPLETE WITH THE FOLLOWING
 JV5355'ADDITIONS.
 JV5355'
 JV5355'THE BARBED-WIRE FENCE IS IN RUINS AND THE M.H.W.L. IS NOW AT THE
 JV5355'FENCE LINE.  THE STATION AND R.M. 2 ARE NOW ABOUT 8 FEET SOUTH OF
 JV5355'THE M.H.W.L.
 JV5355
 JV5355                          STATION RECOVERY (1974)
 JV5355
 JV5355'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RDB)
 JV5355'STATION AND R.M. 2 WERE NOT RECOVERED.  R.M. 1 WAS RECOVERED USING
 JV5355'ORIGINAL DESCRIPTION BY JCP, 1934.  DISTANCE AND DIRECTION FROM
 JV5355'R.M. 1 WOULD PLACE THE STATION WELL OUT INTO THE WATER.
 JV5355'
 JV5355'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN AT ARMY CHEMICAL
 JV5355'CENTER, CARROLL ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6285 ***********************************************************************
 JV6285  DESIGNATION -  CARROLL
 JV6285  PID         -  JV6285
 JV6285  STATE/COUNTY-  MD/HARFORD
 JV6285  COUNTRY     -  US
 JV6285  USGS QUAD   -  BEL AIR (2016)
 JV6285
 JV6285                         *CURRENT SURVEY CONTROL
 JV6285  ______________________________________________________________________
 JV6285* NAD 83(2011) POSITION- 39 32 22.40100(N) 076 20 04.09293(W)   ADJUSTED
 JV6285* NAD 83(2011) ELLIP HT-    52.948 (meters)        (06/27/12)   ADJUSTED
 JV6285* NAD 83(2011) EPOCH   -  2010.00
 JV6285* NAVD 88 ORTHO HEIGHT -    85.762 (meters)      281.37  (feet) ADJUSTED
 JV6285  ______________________________________________________________________
 JV6285  GEOID HEIGHT    -        -32.794 (meters)                     GEOID18
 JV6285  NAD 83(2011) X  -  1,163,655.790 (meters)                     COMP
 JV6285  NAD 83(2011) Y  - -4,786,019.587 (meters)                     COMP
 JV6285  NAD 83(2011) Z  -  4,038,725.008 (meters)                     COMP
 JV6285  LAPLACE CORR    -         -3.98  (seconds)                    DEFLEC18
 JV6285  DYNAMIC HEIGHT  -         85.719 (meters)      281.23  (feet) COMP
 JV6285  MODELED GRAVITY -    980,119.3   (mgal)                       NAVD 88
 JV6285
 JV6285  VERT ORDER      -  FIRST     CLASS II
 JV6285
 JV6285  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6285  Standards:
 JV6285         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6285            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6285  -------------------------------------------------------------------
 JV6285  NETWORK    1.24   2.70           0.53   0.47   1.38      0.30964845
 JV6285  -------------------------------------------------------------------
 JV6285  Click here for local accuracies and other accuracy information.
 JV6285
 JV6285.The horizontal coordinates were established by GPS observations
 JV6285.and adjusted by the National Geodetic Survey in June 2012.
 JV6285
 JV6285.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6285.been affixed to the stable North American tectonic plate. See 
 JV6285.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6285
 JV6285.The horizontal coordinates are valid at the epoch date displayed above
 JV6285.which is a decimal equivalence of Year/Month/Day.
 JV6285
 JV6285.The orthometric height was determined by differential leveling and
 JV6285.adjusted by the NATIONAL GEODETIC SURVEY
 JV6285.in June 1991.
 JV6285
 JV6285.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6285.GEOID18 height accuracy estimate available here.
 JV6285
 JV6285.Click photographs - Photos may exist for this station.
 JV6285
 JV6285.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6285
 JV6285.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6285
 JV6285.The ellipsoidal height was determined by GPS observations
 JV6285.and is referenced to NAD 83.
 JV6285
 JV6285.The dynamic height is computed by dividing the NAVD 88
 JV6285.geopotential number by the normal gravity value computed on the
 JV6285.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6285.degrees latitude (g = 980.6199 gals.).
 JV6285
 JV6285.The modeled gravity was interpolated from observed gravity values.
 JV6285
 JV6285. The following values were computed from the NAD 83(2011) position.
 JV6285
 JV6285;                    North         East     Units Scale Factor Converg.
 JV6285;SPC MD       -   208,115.222   457,212.487   MT  1.00001689   +0 25 03.8
 JV6285;SPC MD       -   682,791.36  1,500,037.97   sFT  1.00001689   +0 25 03.8
 JV6285;UTM  18      - 4,377,504.684   385,326.639   MT  0.99976190   -0 50 58.7
 JV6285
 JV6285!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6285!SPC MD       -   0.99999169  x   1.00001689  =   1.00000858
 JV6285!UTM  18      -   0.99999169  x   0.99976190  =   0.99975360
 JV6285
 JV6285:                Primary Azimuth Mark                     Grid Az
 JV6285:SPC MD       -  CARROLL AZ MK                            056 41 00.3
 JV6285:UTM  18      -  CARROLL AZ MK                            057 57 02.8
 JV6285
 JV6285_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8532677504(NAD 83)
 JV6285
 JV6285|---------------------------------------------------------------------|
 JV6285| PID    Reference Object                     Distance      Geod. Az  |
 JV6285|                                                           dddmmss.s |
 JV6285| JV6320 CARROLL AZ MK                       APPROX. 0.7 KM 0570604.1 |
 JV6285|---------------------------------------------------------------------|
 JV6285
 JV6285                          SUPERSEDED SURVEY CONTROL
 JV6285
 JV6285  NAD 83(2007)-  39 32 22.40115(N)    076 20 04.09370(W) AD(2002.00) 0
 JV6285  ELLIP H (02/10/07)   52.968  (m)                       GP(2002.00)    
 JV6285  ELLIP H (08/30/02)   52.972  (m)                       GP(       ) 4 2
 JV6285  NAD 83(1991)-  39 32 22.40095(N)    076 20 04.09312(W) AD(       ) 1
 JV6285  ELLIP H (01/27/92)   52.958  (m)                       GP(       ) 4 1
 JV6285  NAD 83(1986)-  39 32 22.39450(N)    076 20 04.10034(W) AD(       ) 1
 JV6285  NGVD 29              85.99   (m)          282.1    (f) LEVELING    3  
 JV6285
 JV6285.Superseded values are not recommended for survey control.
 JV6285
 JV6285.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6285.See file dsdata.pdf to determine how the superseded data were derived.
 JV6285
 JV6285_MARKER: DD = SURVEY DISK
 JV6285_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6285_STAMPING: 39 CARROLL 1989
 JV6285_MARK LOGO: MD-025
 JV6285_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6285_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6285+STABILITY: SURFACE MOTION
 JV6285_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6285+SATELLITE: SATELLITE OBSERVATIONS - December 09, 1993
 JV6285
 JV6285  HISTORY     - Date     Condition        Report By
 JV6285  HISTORY     - 1989     MONUMENTED       RDA
 JV6285  HISTORY     - 19931209 GOOD             GEOMET
 JV6285  HISTORY     - 19991226 MARK NOT FOUND   USPSQD
 JV6285  HISTORY     - 20011210 MARK NOT FOUND   NGS
 JV6285
 JV6285                          STATION DESCRIPTION
 JV6285
 JV6285'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6285'THE STATION IS LOCATED IN CENTRAL HARFORD COUNTY, MARYLAND NORTHEAST
 JV6285'OF BEL AIR.  TO REACH THE STATION FROM THE INTERSECTION OF STATE
 JV6285'HIGHWAY 24 AND STATE HIGHWAY 22 PROCEED NORTHEAST ALONG HIGHWAY 22
 JV6285'1.45 MILES TO THE STATION ON THE RIGHT IN FRONT OF JOHN CARROLL HIGH
 JV6285'SCHOOL.  THE STATION IS A STANDARD HARFORD COUNTY STATION DISC SET IN
 JV6285'CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 39 CARROLL 1989.  THE
 JV6285'STATION IS 35.2 FEET EAST OF C AND P MARYLAND TELEPHONE POLE NUMBER
 JV6285'25, 26.0 FEET WEST OF THE SOUTHWEST CORNER OF CULVERT WING WALL, 41.4
 JV6285'FEET SOUTH OF THE CENTERLINE OF HIGHWAY 22.
 JV6285
 JV6285                          STATION RECOVERY (1993)
 JV6285
 JV6285'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6285'RECOVERED IN GOOD CONDITION.
 JV6285
 JV6285                          STATION RECOVERY (1999)
 JV6285
 JV6285'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6285'MARK NOT FOUND.
 JV6285
 JV6285                          STATION RECOVERY (2001)
 JV6285
 JV6285'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV6285'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6670 ***********************************************************************
 HV6670  DESIGNATION -  CARROLL 2
 HV6670  PID         -  HV6670
 HV6670  STATE/COUNTY-  MD/ST MARYS
 HV6670  COUNTRY     -  US
 HV6670  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6670
 HV6670                         *CURRENT SURVEY CONTROL
 HV6670  ______________________________________________________________________
 HV6670* NAD 83(1991) POSITION- 38 18 16.40760(N) 076 24 59.10034(W)   ADJUSTED
 HV6670* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 HV6670  ______________________________________________________________________
 HV6670  GEOID HEIGHT    -        -34.540 (meters)                     GEOID18
 HV6670  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV6670  HORZ ORDER      -  SECOND
 HV6670
 HV6670.The horizontal coordinates were established by classical geodetic methods
 HV6670.and adjusted by the National Geodetic Survey in January 1992.
 HV6670
 HV6670.The orthometric height was scaled from a topographic map.
 HV6670
 HV6670.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6670.GEOID18 height accuracy estimate available here.
 HV6670
 HV6670.Click photographs - Photos may exist for this station.
 HV6670
 HV6670.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6670
 HV6670. The following values were computed from the NAD 83(1991) position.
 HV6670
 HV6670;                    North         East     Units Scale Factor Converg.
 HV6670;SPC MD       -    70,971.923   451,044.456   MT  0.99999921   +0 21 58.6
 HV6670;SPC MD       -   232,847.05  1,479,801.69   sFT  0.99999921   +0 21 58.6
 HV6670;UTM  18      - 4,240,556.159   376,155.499   MT  0.99978889   -0 52 41.0
 HV6670
 HV6670!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6670!SPC MD       -   1.00000358  x   0.99999921  =   1.00000279
 HV6670!UTM  18      -   1.00000358  x   0.99978889  =   0.99979247
 HV6670
 HV6670:                Primary Azimuth Mark                     Grid Az
 HV6670:SPC MD       -  DRUM PT LIGHTHOUSE                       346 17 36.1
 HV6670:UTM  18      -  DRUM PT LIGHTHOUSE                       347 32 15.7
 HV6670
 HV6670_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7615540556(NAD 83)
 HV6670
 HV6670|---------------------------------------------------------------------|
 HV6670| PID    Reference Object                     Distance      Geod. Az  |
 HV6670|                                                           dddmmss.s |
 HV6670| CX2181 CARROLL 2 RM SW                      14.640 METERS 16639     |
 HV6670| CX2180 CARROLL 2 RM SE                      13.320 METERS 23430     |
 HV6670| HV6698 AVONDALE CATHOLIC CHURCH MSFC       APPROX. 4.6 KM 3021135.3 |
 HV6670| HV6716 FISHSTACK MSFC                      APPROX. 3.7 KM 3044545.2 |
 HV6670| HV6715 BAREDA HOUSE CUPOLA                 APPROX. 2.3 KM 3352337.2 |
 HV6670| HV6710 DRUM PT LIGHTHOUSE                  APPROX. 1.7 KM 3463934.7 |
 HV6670|---------------------------------------------------------------------|
 HV6670
 HV6670                          SUPERSEDED SURVEY CONTROL
 HV6670
 HV6670  NAD 83(1986)-  38 18 16.40772(N)    076 24 59.11589(W) AD(       ) 2
 HV6670  NAD 27      -  38 18 15.97000(N)    076 25 00.28700(W) AD(       ) 2
 HV6670  USSD        -  38 18 16.33500(N)    076 25 00.04800(W) AD(       ) 3
 HV6670
 HV6670.Superseded values are not recommended for survey control.
 HV6670
 HV6670.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6670.See file dsdata.pdf to determine how the superseded data were derived.
 HV6670
 HV6670
 HV6670  HISTORY     - Date     Condition        Report By
 HV6670  HISTORY     - 1898     MONUMENTED       CGS
 HV6670  HISTORY     - 1908     SEE DESCRIPTION  CGS
 HV6670  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV6670  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6670
 HV6670                          STATION DESCRIPTION
 HV6670
 HV6670'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV6670'STATION IS ON THE S SIDE OF PATUXENT RIVER, ABOUT 1 MILE SSW OF
 HV6670'HOG POINT AND ABOUT 1 MILE S OF DRUM POINT LIGHT, ON A SANDY CLAY
 HV6670'BLUFF IN A CULTIVATED FIELD, ABOUT 50 FEET ABOVE HIGH-WATER
 HV6670'MARK, 4 FEET S OF TOP EDGE OF BLUFF, 180 YARDS E OF TREES AND
 HV6670'RAVINE BEYOND CULTIVATED FIELD, 60 YARDS W OF TREES AND RAVINE
 HV6670'BEYOND CULTIVATED FIELD, 300 YARDS N OF LARGE SQUARE CHIMNEY ON
 HV6670'OLD-FASHIONED FARMHOUSE, AND 250 YARDS N OF LARGE TREE TO
 HV6670'RIGHT OF FARMHOUSE.  STATION MARKED BY TWO 5-INCH TILE PIPES
 HV6670'PLACED ONE ABOVE THE OTHER, THE TOP OF THE UPPER TILE BEING 8
 HV6670'INCHES BELOW SURFACE OF GROUND.
 HV6670'
 HV6670'REFERENCE STATION SET IN 1907 CONSISTS OF A 6-INCH TILE PIPE
 HV6670'SET BELL END DOWN WITH TOP 6 INCHES BELOW SURFACE OF
 HV6670'GROUND.  IN THE E SIDE OF TOP A NAIL IS SET IN CEMENT.  IT
 HV6670'IS 14.64 METERS (48.0 FEET) FROM STATION IN AZIMUTH 346 DEG 40
 HV6670'MIN.
 HV6670'
 HV6670'REFERENCE MARK SET IN 1908 IS MARKED BY A HOLE IN THE CENTER
 HV6670'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT,
 HV6670'AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP 9 INCHES
 HV6670'BELOW SURFACE OF GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6670'COUNTER-SUNK IN TOP OF POST.  IT IS 13.32 METERS (43.7 FEET)
 HV6670'FROM STATION S 54 DEG 30 MIN W.  DISTANCES AND BEARINGS
 HV6670'FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 HV6670'FOLLOWS--LARGE TREE, 250 YARDS, S 5 DEG 48 MIN W.  CENTER OF
 HV6670'FOUR-SIDED ROOF ON DOCTOR MARSHS HOUSE, 2-1/4 MILES, N 65 DEG
 HV6670'22 MIN W.  SILVER TIP ON TOWER OF VALE HOUSE, 3 MILES, N 57 DEG
 HV6670'05 MIN W.  CHIMNEY OF BOWEN HOUSE, 2 MILES, N 46 DEG 04 MIN W.
 HV6670'LEFT TREE ON HOG POINT, 1 MILE, N 68 DEG 40 MIN E.  RIGHT OF
 HV6670'BUSHES AT EDGE OF RAVINE, 75 YARDS, S 51 DEG 20 MIN E.
 HV6670'12-INCH TREE, 1/8 MILE, S 28 DEG 32 MIN E.  20-INCH TREE,1/8
 HV6670'MILE, S 09 DEG 55 MIN E.  CHIMNEY OF SUSQUEHANNA FARMHOUSE, 300
 HV6670'YARDS, S 01 DEG 10 MIN E.
 HV6670
 HV6670                          STATION RECOVERY (1930)
 HV6670
 HV6670'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6670'STATION IS GONE, APPARENTLY WASHED DOWN THE BANK.
 HV6670
 HV6670                          STATION RECOVERY (1942)
 HV6670
 HV6670'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6670'THIS STATION AND ITS REFERENCE MARKS WERE THOROUGHLY SEARCHED
 HV6670'FOR BY TWO MEN FOR ONE HOUR BUT NO TRACE OF THEM COULD BE
 HV6670'FOUND.  THE BANKS AT THIS LOCATION ARE CAVING RAPIDLY.  THIS
 HV6670'STATION AND ITS REFERENCE MARKS ARE PROBABLY DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6465 ***********************************************************************
 JV6465  PACS        -  This is a Primary Airport Control Station.
 JV6465  DESIGNATION -  CARROLL AP
 JV6465  PID         -  JV6465
 JV6465  STATE/COUNTY-  MD/CARROLL
 JV6465  COUNTRY     -  US
 JV6465  USGS QUAD   -  NEW WINDSOR (2016)
 JV6465
 JV6465                         *CURRENT SURVEY CONTROL
 JV6465  ______________________________________________________________________
 JV6465* NAD 83(2011) POSITION- 39 36 20.46400(N) 077 00 16.17929(W)   ADJUSTED
 JV6465* NAD 83(2011) ELLIP HT-   204.951 (meters)        (06/27/12)   ADJUSTED
 JV6465* NAD 83(2011) EPOCH   -  2010.00
 JV6465* NAVD 88 ORTHO HEIGHT -   237.30  (meters)      778.5   (feet) GPS OBS
 JV6465  ______________________________________________________________________
 JV6465  NAVD 88 orthometric height was determined with geoid model    GEOID96
 JV6465  GEOID HEIGHT    -        -32.366 (meters)                     GEOID96
 JV6465  GEOID HEIGHT    -        -32.350 (meters)                     GEOID18
 JV6465  NAD 83(2011) X  -  1,106,583.715 (meters)                     COMP
 JV6465  NAD 83(2011) Y  - -4,794,856.558 (meters)                     COMP
 JV6465  NAD 83(2011) Z  -  4,044,481.319 (meters)                     COMP
 JV6465  LAPLACE CORR    -          3.89  (seconds)                    DEFLEC18
 JV6465
 JV6465  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6465  Standards:
 JV6465         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6465            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6465  -------------------------------------------------------------------
 JV6465  NETWORK    0.31   1.14           0.14   0.11   0.58      0.04948781
 JV6465  -------------------------------------------------------------------
 JV6465  Click here for local accuracies and other accuracy information.
 JV6465
 JV6465.This mark is at Carroll Co Regional/jack B Poage Fld Airport (W54)
 JV6465
 JV6465.The horizontal coordinates were established by GPS observations
 JV6465.and adjusted by the National Geodetic Survey in June 2012.
 JV6465
 JV6465.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6465.been affixed to the stable North American tectonic plate. See 
 JV6465.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6465
 JV6465.The horizontal coordinates are valid at the epoch date displayed above
 JV6465.which is a decimal equivalence of Year/Month/Day.
 JV6465
 JV6465.The orthometric height was determined by GPS observations and a
 JV6465.high-resolution geoid model.
 JV6465
 JV6465.GPS derived orthometric heights for airport stations designated as
 JV6465.PACS or SACS are published to 2 decimal places.  This maintains
 JV6465.centimeter relative accuracy between the PACS and SACS.  It does
 JV6465.not indicate centimeter accuracy relative to other marks which are
 JV6465.part of the published vertical control network.
 JV6465
 JV6465.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6465.GEOID18 height accuracy estimate available here.
 JV6465
 JV6465.Click photographs - Photos may exist for this station.
 JV6465
 JV6465.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6465
 JV6465.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6465
 JV6465.The ellipsoidal height was determined by GPS observations
 JV6465.and is referenced to NAD 83.
 JV6465
 JV6465. The following values were computed from the NAD 83(2011) position.
 JV6465
 JV6465;                    North         East     Units Scale Factor Converg.
 JV6465;SPC MD       -   215,248.878   399,614.009   MT  1.00003094   -0 00 10.2
 JV6465;SPC MD       -   706,195.69  1,311,066.96   sFT  1.00003094   -0 00 10.2
 JV6465;UTM  18      - 4,385,913.029   327,910.213   MT  0.99996462   -1 16 41.4
 JV6465
 JV6465!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6465!SPC MD       -   0.99996785  x   1.00003094  =   0.99999879
 JV6465!UTM  18      -   0.99996785  x   0.99996462  =   0.99993247
 JV6465
 JV6465:                Primary Azimuth Mark                     Grid Az
 JV6465:SPC MD       -  CARROLL AP AZ MK                         148 02 12.1
 JV6465:UTM  18      -  CARROLL AP AZ MK                         149 18 43.3
 JV6465
 JV6465_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2791085913(NAD 83)
 JV6465
 JV6465|---------------------------------------------------------------------|
 JV6465| PID    Reference Object                     Distance      Geod. Az  |
 JV6465|                                                           dddmmss.s |
 JV6465| JV6466 CARROLL AP AZ MK                    APPROX. 0.7 KM 1480201.9 |
 JV6465| AB4681 SHOP                                APPROX. 0.6 KM 3352651.3 |
 JV6465|---------------------------------------------------------------------|
 JV6465
 JV6465                          SUPERSEDED SURVEY CONTROL
 JV6465
 JV6465  NAD 83(2007)-  39 36 20.46419(N)    077 00 16.18014(W) AD(2002.00) 0
 JV6465  ELLIP H (02/10/07)  204.973  (m)                       GP(2002.00)    
 JV6465  ELLIP H (10/29/02)  204.966  (m)                       GP(       ) 2 1
 JV6465  NAD 83(1991)-  39 36 20.46418(N)    077 00 16.18033(W) AD(       ) B
 JV6465  ELLIP H (10/08/97)  204.919  (m)                       GP(       ) 2 1
 JV6465  NAD 83(1991)-  39 36 20.46443(N)    077 00 16.18044(W) AD(       ) 1
 JV6465  ELLIP H (01/27/92)  204.939  (m)                       GP(       ) 4 1
 JV6465  NAD 83(1986)-  39 36 20.46314(N)    077 00 16.19176(W) AD(       ) 1
 JV6465  NAD 27      -  39 36 20.09816(N)    077 00 17.29274(W) AD(       ) 1
 JV6465  NGVD 29 (11/20/87)  237.60   (m)  RAPOU78  model used  GPS OBS        
 JV6465
 JV6465.Superseded values are not recommended for survey control.
 JV6465
 JV6465.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6465.See file dsdata.pdf to determine how the superseded data were derived.
 JV6465
 JV6465_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6465_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6465_STAMPING: CARROLL AP 1985
 JV6465_MARK LOGO: NGS
 JV6465_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6465_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6465+STABILITY: SURFACE MOTION
 JV6465_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6465+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2001
 JV6465
 JV6465  HISTORY     - Date     Condition        Report By
 JV6465  HISTORY     - 1985     MONUMENTED       NGS
 JV6465  HISTORY     - 19860115 GOOD
 JV6465  HISTORY     - 19960830 GOOD             NGS
 JV6465  HISTORY     - 19970221 GOOD             NGS
 JV6465  HISTORY     - 20010220 GOOD             INDIV
 JV6465
 JV6465                          STATION DESCRIPTION
 JV6465
 JV6465'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 JV6465'THERE ARE NO REFERENCE MARKS AT THIS STATION.
 JV6465'
 JV6465'THE STATION IS LOCATED ABOUT 2-1/2 KM (1-1/2 MI) NORTHWEST FROM
 JV6465'WESTMINISTER AND ON THE MOST WESTERLY EDGE OF THE CARROLL COUNTY
 JV6465'AIRPORT RUNWAY.  IT IS ON AN APPROXIMATE EXTENDED LINE FROM THE
 JV6465'SOUTHERLY SIDE OF AIRPORT ADMINSTRATION BUILDING.
 JV6465'
 JV6465'OWNERSHIP--CARROLL COUNTY AIRPORT PROPERTY.  MR. JACK POAGE, MANAGER.
 JV6465'HIS TELEPHONE NUMBER IS (301) 876-7200.
 JV6465'
 JV6465'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 97 AND
 JV6465'140 AT WESTMINISTER, GO NORTHERLY ON STATE HIGHWAY 97 FOR 1.75 KM
 JV6465'(1.1 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO WEST ON AIRPORT
 JV6465'ROAD FOR 0.5 KM (0.3 MI) TO THE ADMINISTRATION BUILDING ON THE RIGHT.
 JV6465'PICK WAY WESTERLY ACROSS THE AIRPORT COMPLEX FOR ABOUT 0.2 KM
 JV6465'(0.15 MI) TO THE WESTERLY EDGE OF THE RUNWAY AND THE STATION.
 JV6465'
 JV6465'THE STATION IS A STANDARD NGS DISK STAMPED--CARROLL AP 1985--SET INTO
 JV6465'THE TOP OF A 25 CM (10 INCH) ROUND CONCRETE MONUMENT FLUSH WITH THE
 JV6465'SURFACE OF THE GROUND.
 JV6465'
 JV6465'THE STATION IS LOCATED 13.7 M (45.0 FT) WSW FROM THE CENTER OF THE
 JV6465'RUNWAY, 10.1 M (33.2 FT) SOUTH OF THE WHITE LIGHT FROM THE NORTH END
 JV6465'OF THE RUNWAY, 0.6 M (1.9 FT) NORTH OF A CARSONITE WITNESS POST AND
 JV6465'4.1 M (13.5 FT) SW OF THE MOST WESTERLY EDGE OF THE RUNWAY.
 JV6465'
 JV6465'THE UNDERGROUND MARK IS A STANDARD NGS DISK STAMPED--CARROLL AP
 JV6465'1985--IMBEDDED IN A MASS OF CONCRETE 1.1 M (3.7 FT) BELOW THE
 JV6465'SURFACE OF THE GROUND.
 JV6465
 JV6465                          STATION RECOVERY (1986)
 JV6465
 JV6465'RECOVERED 1986
 JV6465'RECOVERED IN GOOD CONDITION.
 JV6465
 JV6465                          STATION RECOVERY (1996)
 JV6465
 JV6465'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (JTM)
 JV6465'RECOVERED AS DESCRIBED.  THIS STATION IS DESIGNATED AS A PRIMARY
 JV6465'AIRPORT CONTROL STATION (PACS) .
 JV6465
 JV6465                          STATION RECOVERY (1997)
 JV6465
 JV6465'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (AJL)
 JV6465'THERE ARE NO REFERENCE MARKS AT THIS STATION.  THE STATION IS LOCATED
 JV6465'ABOUT 2-1/2 KM NORTHWEST FROM WESTMINISTER AND ON THE MOST WESTERLY
 JV6465'EDGE OF THE CARROLL COUNTY AIRPORT RUNWAY.  IT IS ON AN APPROXIMATE
 JV6465'EXTENDED LINE FROM THE SOUTHERLY SIDE OF AIRPORT ADMINSTRATION
 JV6465'BUILDING.  OWNERSHIP--CARROLL COUNTY AIRPORT PROPERTY.  MR.  JACK
 JV6465'POAGE, MANAGER.  HIS TELEPHONE NUMBER IS (301) 876-7200.  TO REACH THE
 JV6465'STATION FROM THE INTERSECTION OF STATE HIGHWAYS 97 AND 140 AT
 JV6465'WESTMINISTER, GO NORTHERLY ON STATE HIGHWAY 97 FOR 1.75 KM (1.10 MI)
 JV6465'TO A SIDE ROAD LEFT.  TURN LEFT AND GO WEST ON AIRPORT ROAD FOR 0.5 KM
 JV6465'(0.30 MI) TO THE ADMINISTRATION BUILDING ON THE RIGHT.  PICK WAY
 JV6465'WESTERLY ACROSS THE AIRPORT COMPLEX FOR ABOUT 0.2 KM (0.10 MI) TO THE
 JV6465'WESTERLY EDGE OF THE RUNWAY AND THE STATION.  THE STATION IS A
 JV6465'STANDARD NGS DISK STAMPED--CARROLL AP 1985--SET INTO THE TOP OF A 25
 JV6465'CM (10 INCH) ROUND CONCRETE MONUMENT FLUSH WITH THE SURFACE OF THE
 JV6465'GROUND.  THE STATION IS LOCATED 13.7 M (44.9 FT) WSW FROM THE CENTER
 JV6465'OF THE RUNWAY, 10.1 M (33.1 FT) SOUTH OF THE WHITE LIGHT FROM THE
 JV6465'NORTH END OF THE RUNWAY, 0.6 M (2.0 FT) NORTH OF A CARSONITE WITNESS
 JV6465'POST AND 4.1 M (13.5 FT) SW OF THE MOST WESTERLY EDGE OF THE RUNWAY.
 JV6465'THE UNDERGROUND MARK IS A STANDARD NGS DISK STAMPED--CARROLL AP
 JV6465'1985--IMBEDDED IN A MASS OF CONCRETE 1.1 M (3.6 FT) BELOW THE SURFACE
 JV6465'OF THE GROUND.  THIS STATION IS DESIGNATED AS THE PRIMARY AIRPORT
 JV6465'CONTROL STATION.
 JV6465
 JV6465                          STATION RECOVERY (2001)
 JV6465
 JV6465'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2001 (EAS)
 JV6465'DESCRIPTION IS PARTIALLY ADEQUATE. AT THE END OF AIRPORT DR. AND THE
 JV6465'ADMIN.BUILDING, PROCEED ON AN AZIMUTH OF 225 DEGREES THROUGH THE FENCE
 JV6465'AND ACROSS THE TARMAC AND OVER TWO TAXIWAYS, FOR 550 FEET +/- TO THE
 JV6465'STATION. THE MARK IS 26.6 FEET WEST OF THE EDGE OF PAVING, 28 FEET SW
 JV6465'FROM THE 6TH BLUE TAXIWAY LIGHT NORTH OF THE YELLOW HOLD LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6466 ***********************************************************************
 JV6466  DESIGNATION -  CARROLL AP AZ MK
 JV6466  PID         -  JV6466
 JV6466  STATE/COUNTY-  MD/CARROLL
 JV6466  COUNTRY     -  US
 JV6466  USGS QUAD   -  WESTMINSTER (2016)
 JV6466
 JV6466                         *CURRENT SURVEY CONTROL
 JV6466  ______________________________________________________________________
 JV6466* NAD 83(1991) POSITION- 39 36 01.17226(N) 077 00 00.61790(W)   ADJUSTED
 JV6466* NAD 83(1991) ELLIP HT-   204.990 (meters)        (01/27/92)   ADJUSTED
 JV6466* NAVD 88 ORTHO HEIGHT -   237.5   (meters)      779.    (feet) VERTCON3
 JV6466  ______________________________________________________________________
 JV6466  GEOID HEIGHT    -        -32.324 (meters)                     GEOID18
 JV6466  NAD 83(1991) X  -  1,107,030.781 (meters)                     COMP
 JV6466  NAD 83(1991) Y  - -4,795,142.655 (meters)                     COMP
 JV6466  NAD 83(1991) Z  -  4,044,022.914 (meters)                     COMP
 JV6466  LAPLACE CORR    -          3.78  (seconds)                    DEFLEC18
 JV6466  HORZ ORDER      -  FIRST
 JV6466  ELLP ORDER      -  FOURTH    CLASS I
 JV6466
 JV6466.This mark is at Carroll Co Regional/jack B Poage Fld Airport (W54)
 JV6466
 JV6466.The horizontal coordinates were established by GPS observations
 JV6466.and adjusted by the National Geodetic Survey in January 1992.
 JV6466
 JV6466.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6466.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6466
 JV6466.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6466.GEOID18 height accuracy estimate available here.
 JV6466
 JV6466.Click photographs - Photos may exist for this station.
 JV6466
 JV6466.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6466
 JV6466.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6466
 JV6466.The ellipsoidal height was determined by GPS observations
 JV6466.and is referenced to NAD 83.
 JV6466
 JV6466. The following values were computed from the NAD 83(1991) position.
 JV6466
 JV6466;                    North         East     Units Scale Factor Converg.
 JV6466;SPC MD       -   214,653.877   399,985.258   MT  1.00002976   -0 00 00.4
 JV6466;SPC MD       -   704,243.59  1,312,284.97   sFT  1.00002976   -0 00 00.4
 JV6466;UTM  18      - 4,385,309.953   328,268.104   MT  0.99996311   -1 16 31.0
 JV6466
 JV6466!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6466!SPC MD       -   0.99996784  x   1.00002976  =   0.99999760
 JV6466!UTM  18      -   0.99996784  x   0.99996311  =   0.99993095
 JV6466
 JV6466:                Primary Azimuth Mark                     Grid Az
 JV6466:SPC MD       -  CARROLL AP                               328 02 12.2
 JV6466:UTM  18      -  CARROLL AP                               329 18 42.8
 JV6466
 JV6466_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2826885309(NAD 83)
 JV6466
 JV6466|---------------------------------------------------------------------|
 JV6466| PID    Reference Object                     Distance      Geod. Az  |
 JV6466|                                                           dddmmss.s |
 JV6466| JV6465 CARROLL AP                          APPROX. 0.7 KM 3280211.8 |
 JV6466|---------------------------------------------------------------------|
 JV6466
 JV6466                          SUPERSEDED SURVEY CONTROL
 JV6466
 JV6466  NAD 83(1986)-  39 36 01.17097(N)    077 00 00.62922(W) AD(       ) 1
 JV6466  NAD 27      -  39 36 00.80577(N)    077 00 01.73083(W) AD(       ) 1
 JV6466  NGVD 29 (11/20/87)  237.7    (m)  RAPOU78  model used  GPS OBS        
 JV6466
 JV6466.Superseded values are not recommended for survey control.
 JV6466
 JV6466.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6466.See file dsdata.pdf to determine how the superseded data were derived.
 JV6466
 JV6466_MARKER: DZ = AZIMUTH MARK DISK
 JV6466_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6466_STAMPING: CARROLL AP 1985
 JV6466_MARK LOGO: NGS
 JV6466_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6466_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6466+STABILITY: SURFACE MOTION
 JV6466_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6466+SATELLITE: SATELLITE OBSERVATIONS - January 15, 1986
 JV6466
 JV6466  HISTORY     - Date     Condition        Report By
 JV6466  HISTORY     - 1985     MONUMENTED       NGS
 JV6466  HISTORY     - 19860115 GOOD
 JV6466
 JV6466                          STATION DESCRIPTION
 JV6466
 JV6466'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 JV6466'THE STATION IS LOCATED 2-1/2 KM (1-1/2 MI) NORTHWEST FROM
 JV6466'WESTMINISTER AND ON THE WEST SIDE OF THE CARROLL COUNTY AIRPORT
 JV6466'RUNWAY.
 JV6466'
 JV6466'OWNERSHIP--AIRPORT PROPERTY.
 JV6466'
 JV6466'TO REACH THE INTERSECTION FROM STATE HIGHWAYS 97 AND 140 AT
 JV6466'WESTMINISTER GO NORTH ON STATE HIGHWAY 97 FOR 1.75 KM (1.1 MI) TO A
 JV6466'SIDE ROAD LEFT.  TURN LEFT AND GO WESTERLY ON AIRPORT ROAD FOR 0.5 KM
 JV6466'(0.3 MI) TO THE AIRPORT ADMINISTRATION BUILDING ON THE RIGHT.  BEAR
 JV6466'LEFT AND PICK WAY SOUTHWESTERLY THROUGH THE AIRPORT COMPLEX FOR
 JV6466'0.8 KM (0.5 MI) TO THE MOST SOUTHWEST PART OF THE RUNWAY AND THE
 JV6466'STATION.
 JV6466'
 JV6466'THE STATION SURFACE MARK IS A STANDARD NGS AZIMUTH MARK DISK
 JV6466'STAMPED--CARROLL AP 1985-SET IN THE TOP OF A 25 CM (10 INCH) ROUND
 JV6466'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.
 JV6466'
 JV6466'THE SUB-SURFACE MARK IS A STANDARD NGS AZIMUTH MARK DISK STAMPED--
 JV6466'CARROLL AP 1985--SET IN THE TOP OF A 15 CM (6 INCH) MASS OF
 JV6466'CONCRETE WHICH IS 1.14 METERS (3.7 FT) BELOW THE SURFACE OF THE
 JV6466'GROUND.
 JV6466'
 JV6466'THE AZIMUTH IS LOCATED 13.7 METERS (45 FT) WEST-SOUTHWEST FROM THE
 JV6466'CENTER OF THE RUNWAY, 4.0 METERS (13 FT) WEST-SOUTHWEST FROM THE MOST
 JV6466'SOUTH WHITE LIGHT ALONG THE WESTERLY SIDE OF THE RUNWAY AND 0.7
 JV6466'METERS (2.3 FT) NORTHEAST FROM A CARSONITE WITNESS POST.
 JV6466
 JV6466                          STATION RECOVERY (1986)
 JV6466
 JV6466'RECOVERED 1986
 JV6466'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6320 ***********************************************************************
 JV6320  DESIGNATION -  CARROLL AZ MK
 JV6320  PID         -  JV6320
 JV6320  STATE/COUNTY-  MD/HARFORD
 JV6320  COUNTRY     -  US
 JV6320  USGS QUAD   -  BEL AIR (2016)
 JV6320
 JV6320                         *CURRENT SURVEY CONTROL
 JV6320  ______________________________________________________________________
 JV6320* NAD 83(2011) POSITION- 39 32 34.56717(N) 076 19 39.80075(W)   ADJUSTED
 JV6320* NAD 83(2011) ELLIP HT-    49.724 (meters)        (06/27/12)   ADJUSTED
 JV6320* NAD 83(2011) EPOCH   -  2010.00
 JV6320* NAVD 88 ORTHO HEIGHT -    82.574 (meters)      270.91  (feet) ADJUSTED
 JV6320  ______________________________________________________________________
 JV6320  GEOID HEIGHT    -        -32.799 (meters)                     GEOID18
 JV6320  NAD 83(2011) X  -  1,164,162.390 (meters)                     COMP
 JV6320  NAD 83(2011) Y  - -4,785,647.988 (meters)                     COMP
 JV6320  NAD 83(2011) Z  -  4,039,012.308 (meters)                     COMP
 JV6320  LAPLACE CORR    -         -3.82  (seconds)                    DEFLEC18
 JV6320  DYNAMIC HEIGHT  -         82.532 (meters)      270.77  (feet) COMP
 JV6320  MODELED GRAVITY -    980,119.7   (mgal)                       NAVD 88
 JV6320
 JV6320  VERT ORDER      -  FIRST     CLASS II
 JV6320
 JV6320  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6320  Standards:
 JV6320         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6320            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6320  -------------------------------------------------------------------
 JV6320  NETWORK    1.70   3.55           0.74   0.59   1.81      0.47483491
 JV6320  -------------------------------------------------------------------
 JV6320  Click here for local accuracies and other accuracy information.
 JV6320
 JV6320.The horizontal coordinates were established by GPS observations
 JV6320.and adjusted by the National Geodetic Survey in June 2012.
 JV6320
 JV6320.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6320.been affixed to the stable North American tectonic plate. See 
 JV6320.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6320
 JV6320.The horizontal coordinates are valid at the epoch date displayed above
 JV6320.which is a decimal equivalence of Year/Month/Day.
 JV6320
 JV6320.The orthometric height was determined by differential leveling and
 JV6320.adjusted by the NATIONAL GEODETIC SURVEY
 JV6320.in June 1991.
 JV6320
 JV6320.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6320.GEOID18 height accuracy estimate available here.
 JV6320
 JV6320.Click photographs - Photos may exist for this station.
 JV6320
 JV6320.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6320
 JV6320.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6320
 JV6320.The ellipsoidal height was determined by GPS observations
 JV6320.and is referenced to NAD 83.
 JV6320
 JV6320.The dynamic height is computed by dividing the NAVD 88
 JV6320.geopotential number by the normal gravity value computed on the
 JV6320.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6320.degrees latitude (g = 980.6199 gals.).
 JV6320
 JV6320.The modeled gravity was interpolated from observed gravity values.
 JV6320
 JV6320. The following values were computed from the NAD 83(2011) position.
 JV6320
 JV6320;                    North         East     Units Scale Factor Converg.
 JV6320;SPC MD       -   208,494.680   457,789.792   MT  1.00001758   +0 25 19.0
 JV6320;SPC MD       -   684,036.30  1,501,932.01   sFT  1.00001758   +0 25 19.0
 JV6320;UTM  18      - 4,377,871.186   385,912.046   MT  0.99976025   -0 50 43.4
 JV6320
 JV6320!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6320!SPC MD       -   0.99999220  x   1.00001758  =   1.00000978
 JV6320!UTM  18      -   0.99999220  x   0.99976025  =   0.99975245
 JV6320
 JV6320:                Primary Azimuth Mark                     Grid Az
 JV6320:SPC MD       -  CARROLL                                  236 41 00.5
 JV6320:UTM  18      -  CARROLL                                  237 57 02.9
 JV6320
 JV6320_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8591277871(NAD 83)
 JV6320
 JV6320|---------------------------------------------------------------------|
 JV6320| PID    Reference Object                     Distance      Geod. Az  |
 JV6320|                                                           dddmmss.s |
 JV6320| JV6285 CARROLL                             APPROX. 0.7 KM 2370619.5 |
 JV6320|---------------------------------------------------------------------|
 JV6320
 JV6320                          SUPERSEDED SURVEY CONTROL
 JV6320
 JV6320  NAD 83(2007)-  39 32 34.56732(N)    076 19 39.80152(W) AD(2002.00) 0
 JV6320  ELLIP H (02/10/07)   49.743  (m)                       GP(2002.00)    
 JV6320  ELLIP H (09/18/02)   49.748  (m)                       GP(       ) 4 2
 JV6320  NAD 83(1991)-  39 32 34.56713(N)    076 19 39.80094(W) AD(       ) 1
 JV6320  ELLIP H (01/27/92)   49.733  (m)                       GP(       ) 4 1
 JV6320  NAD 83(1986)-  39 32 34.56064(N)    076 19 39.80815(W) AD(       ) 1
 JV6320  NGVD 29              82.81   (m)          271.7    (f) LEVELING    3  
 JV6320
 JV6320.Superseded values are not recommended for survey control.
 JV6320
 JV6320.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6320.See file dsdata.pdf to determine how the superseded data were derived.
 JV6320
 JV6320_MARKER: DZ = AZIMUTH MARK DISK
 JV6320_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6320_STAMPING: 39 CARROLL 1989
 JV6320_MARK LOGO: MD-025
 JV6320_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6320_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6320+STABILITY: SURFACE MOTION
 JV6320_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6320+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2002
 JV6320
 JV6320  HISTORY     - Date     Condition        Report By
 JV6320  HISTORY     - 1989     MONUMENTED       RDA
 JV6320  HISTORY     - 19991226 MARK NOT FOUND   USPSQD
 JV6320  HISTORY     - 20011210 GOOD             NGS
 JV6320  HISTORY     - 20020309 GOOD             USPSQD
 JV6320
 JV6320                          STATION DESCRIPTION
 JV6320
 JV6320'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6320'THE STATION IS LOCATED IN CENTRAL HARFORD COUNTY, MARYLAND NORTHEAST
 JV6320'OF BEL AIR.  TO REACH THE STATION FROM THE INTERSECTION OF STATE
 JV6320'HIGHWAY 24 AND STATE HIGHWAY 22 PROCEED NORTHEAST ALONG HIGHWAY 22
 JV6320'1.45 MILES TO THE STATION ON THE RIGHT IN FRONT OF JOHN CARROLL HIGH
 JV6320'SCHOOL.  TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTHEAST
 JV6320'ALONG HIGHWAY 22 0.4 MILE TO THE MARK ON THE LEFT.  THE MARK IS A
 JV6320'STANDARD HARFORD COUNTY AZIMUTH DISC SET IN CONCRETE ABOUT 1 INCH
 JV6320'BELOW GROUND STAMPED 39 CARROLL 1989.  THE MARK 42.5 FEET EAST OF G
 JV6320'AND E POWER POLE NUMBER 51034, 59.9 FEET WEST OF STOP LIGHT POLE,
 JV6320'38.0 FEET NORTH OF CENTERLINE OF HIGHWAY 22.
 JV6320
 JV6320                          STATION RECOVERY (1999)
 JV6320
 JV6320'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6320'MARK NOT FOUND.
 JV6320
 JV6320                          STATION RECOVERY (2001)
 JV6320
 JV6320'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV6320'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV6320
 JV6320                          STATION RECOVERY (2002)
 JV6320
 JV6320'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV6320'CHANGE HIGHWAY TO 924 AND .8 MILES TO THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8030 ***********************************************************************
 AJ8030  DESIGNATION -  CARROLL COUNTY GPS BASE
 AJ8030  PID         -  AJ8030
 AJ8030  STATE/COUNTY-  MD/CARROLL
 AJ8030  COUNTRY     -  US
 AJ8030  USGS QUAD   -  WESTMINSTER (2016)
 AJ8030
 AJ8030                         *CURRENT SURVEY CONTROL
 AJ8030  ______________________________________________________________________
 AJ8030* NAD 83(2011) POSITION- 39 34 22.62745(N) 076 59 14.24553(W)   ADJUSTED
 AJ8030* NAD 83(2011) ELLIP HT-   209.774 (meters)        (06/27/12)   ADJUSTED
 AJ8030* NAD 83(2011) EPOCH   -  2010.00
 AJ8030* NAVD 88 ORTHO HEIGHT -   242.0   (meters)      794.    (feet) GPS OBS
 AJ8030  ______________________________________________________________________
 AJ8030  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8030  GEOID HEIGHT    -        -32.233 (meters)                     GEOID99
 AJ8030  GEOID HEIGHT    -        -32.221 (meters)                     GEOID18
 AJ8030  NAD 83(2011) X  -  1,108,545.723 (meters)                     COMP
 AJ8030  NAD 83(2011) Y  - -4,796,784.281 (meters)                     COMP
 AJ8030  NAD 83(2011) Z  -  4,041,683.694 (meters)                     COMP
 AJ8030  LAPLACE CORR    -          3.26  (seconds)                    DEFLEC18
 AJ8030
 AJ8030  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8030  Standards:
 AJ8030         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8030            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8030  -------------------------------------------------------------------
 AJ8030  NETWORK    0.33   0.63           0.15   0.12   0.32     -0.03917293
 AJ8030  -------------------------------------------------------------------
 AJ8030  Click here for local accuracies and other accuracy information.
 AJ8030
 AJ8030.The horizontal coordinates were established by GPS observations
 AJ8030.and adjusted by the National Geodetic Survey in June 2012.
 AJ8030
 AJ8030.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8030.been affixed to the stable North American tectonic plate. See 
 AJ8030.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8030
 AJ8030.The horizontal coordinates are valid at the epoch date displayed above
 AJ8030.which is a decimal equivalence of Year/Month/Day.
 AJ8030
 AJ8030.The orthometric height was determined by GPS observations and a
 AJ8030.high-resolution geoid model.
 AJ8030
 AJ8030.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8030.GEOID18 height accuracy estimate available here.
 AJ8030
 AJ8030.Click photographs - Photos may exist for this station.
 AJ8030
 AJ8030.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8030
 AJ8030.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8030
 AJ8030.The ellipsoidal height was determined by GPS observations
 AJ8030.and is referenced to NAD 83.
 AJ8030
 AJ8030. The following values were computed from the NAD 83(2011) position.
 AJ8030
 AJ8030;                    North         East     Units Scale Factor Converg.
 AJ8030;SPC MD       -   211,614.676   401,092.076   MT  1.00002382   +0 00 28.7
 AJ8030;SPC MD       -   694,272.48  1,315,916.25   sFT  1.00002382   +0 00 28.7
 AJ8030;UTM  18      - 4,382,247.083   329,306.969   MT  0.99995873   -1 15 58.8
 AJ8030
 AJ8030!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8030!SPC MD       -   0.99996709  x   1.00002382  =   0.99999091
 AJ8030!UTM  18      -   0.99996709  x   0.99995873  =   0.99992582
 AJ8030
 AJ8030_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2930682247(NAD 83)
 AJ8030
 AJ8030                          SUPERSEDED SURVEY CONTROL
 AJ8030
 AJ8030  NAD 83(2007)-  39 34 22.62767(N)    076 59 14.24630(W) AD(2002.00) 0
 AJ8030  ELLIP H (02/10/07)  209.796  (m)                       GP(2002.00)    
 AJ8030  NAD 83(1991)-  39 34 22.62775(N)    076 59 14.24659(W) AD(       ) A
 AJ8030  ELLIP H (02/12/02)  209.796  (m)                       GP(       ) 4 1
 AJ8030
 AJ8030.Superseded values are not recommended for survey control.
 AJ8030
 AJ8030.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8030.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8030
 AJ8030_MARKER: Z = SEE DESCRIPTION
 AJ8030_SETTING: 0 = UNSPECIFIED SETTING
 AJ8030_MARK LOGO: NONE
 AJ8030_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8030_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8030+STABILITY: SURFACE MOTION
 AJ8030_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8030+SATELLITE: SATELLITE OBSERVATIONS - 2000
 AJ8030
 AJ8030  HISTORY     - Date     Condition        Report By
 AJ8030  HISTORY     - 2000     MONUMENTED       MD-013
 AJ8030  HISTORY     - 20121125 MARK NOT FOUND   NGS
 AJ8030
 AJ8030                          STATION DESCRIPTION
 AJ8030
 AJ8030'DESCRIBED BY CARROLL COUNTY MARYLAND 2000 (RK)
 AJ8030'THE STATION IS THE ANTENNA REFERENCE POINT FOR A GPS ANTENNA MOUNTED
 AJ8030'ATOP A BUILDING.  IT IS LOCATED IN THE CITY OF WESTMINSTER MARYLAND
 AJ8030'ATOP A CARROLL COUNTY MARYLAND GOVERNMENT OFFICE BUILDING.  THE OFFICE
 AJ8030'COMPLEX IS LOCATED IN THE SOUTHWEST PORTION OF THE CITY OF WESTMINSTER
 AJ8030'ABOUT 0.5 MI (0.8 KM) SOUTH OF THE INTERSECTION OF STATE ROUTES 27 AND
 AJ8030'140.  THE BUILDING ADDRESS IS 225 N CENTER STREET.  TO GAIN ACCESS TO
 AJ8030'THE SITE CONTACT THE CARROLL COUNTY BUREAU OF ENGINEERING AT
 AJ8030'410.386.2157
 AJ8030
 AJ8030                          STATION RECOVERY (2012)
 AJ8030
 AJ8030'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRW)
 AJ8030'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5348 ***********************************************************************
 JV5348  DESIGNATION -  CARROLL POINT 1898
 JV5348  PID         -  JV5348
 JV5348  STATE/COUNTY-  MD/BALTIMORE
 JV5348  COUNTRY     -  US
 JV5348  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5348
 JV5348                         *CURRENT SURVEY CONTROL
 JV5348  ______________________________________________________________________
 JV5348* NAD 83(1991) POSITION- 39 18 46.21290(N) 076 19 10.47609(W)   ADJUSTED
 JV5348* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5348  ______________________________________________________________________
 JV5348  GEOID HEIGHT    -        -33.157 (meters)                     GEOID18
 JV5348  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 JV5348  HORZ ORDER      -  THIRD
 JV5348
 JV5348.The horizontal coordinates were established by classical geodetic methods
 JV5348.and adjusted by the National Geodetic Survey in January 1992.
 JV5348
 JV5348.The orthometric height was scaled from a topographic map.
 JV5348
 JV5348.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5348.GEOID18 height accuracy estimate available here.
 JV5348
 JV5348.Click photographs - Photos may exist for this station.
 JV5348
 JV5348.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5348
 JV5348. The following values were computed from the NAD 83(1991) position.
 JV5348
 JV5348;                    North         East     Units Scale Factor Converg.
 JV5348;SPC MD       -   182,954.290   458,680.406   MT  0.99997888   +0 25 37.4
 JV5348;SPC MD       -   600,242.53  1,504,853.97   sFT  0.99997888   +0 25 37.4
 JV5348;UTM  18      - 4,352,323.416   386,238.407   MT  0.99975934   -0 50 10.0
 JV5348
 JV5348!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5348!SPC MD       -   1.00000524  x   0.99997888  =   0.99998412
 JV5348!UTM  18      -   1.00000524  x   0.99975934  =   0.99976458
 JV5348
 JV5348:                Primary Azimuth Mark                     Grid Az
 JV5348:SPC MD       -  WHITE OAK                                316 46 11.6
 JV5348:UTM  18      -  WHITE OAK                                318 01 59.0
 JV5348
 JV5348_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8623852323(NAD 83)
 JV5348
 JV5348|---------------------------------------------------------------------|
 JV5348| PID    Reference Object                     Distance      Geod. Az  |
 JV5348|                                                           dddmmss.s |
 JV5348| JV5357 WHITE OAK                           APPROX. 1.7 KM 3171149.0 |
 JV5348|---------------------------------------------------------------------|
 JV5348
 JV5348                          SUPERSEDED SURVEY CONTROL
 JV5348
 JV5348  NAD 83(1986)-  39 18 46.20733(N)    076 19 10.48409(W) AD(       ) 3
 JV5348  NAD 27      -  39 18 45.82600(N)    076 19 11.64600(W) AD(       ) 3
 JV5348  USSD        -  39 18 46.17900(N)    076 19 11.48500(W) AD(       ) 3
 JV5348
 JV5348.Superseded values are not recommended for survey control.
 JV5348
 JV5348.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5348.See file dsdata.pdf to determine how the superseded data were derived.
 JV5348
 JV5348_MARKER: N = NAIL
 JV5348_SETTING: 0 = UNSPECIFIED SETTING
 JV5348_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5348
 JV5348  HISTORY     - Date     Condition        Report By
 JV5348  HISTORY     - 1898     MONUMENTED       CGS
 JV5348  HISTORY     - 1934     SEE DESCRIPTION  CGS
 JV5348
 JV5348                          STATION DESCRIPTION
 JV5348
 JV5348'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JV5348'ON WESTERN SIDE OF GUNPOWDER RIVER, 1 MILE ABOVE SPRY ISLAND, ON
 JV5348'CARROLL POINT, 120 FEET FROM END OF POINT, 75 FEET FROM SHORE TO
 JV5348'N, AND 40 FEET FROM SHORE TO SE.  MARKED BY TWO 4-INCH DRAIN TILES
 JV5348'PLACED ONE ABOVE THE OTHER, AND A NAIL IN A PINE STUB EXTENDING TO
 JV5348'THE SURFACE OF THE GROUND.
 JV5348
 JV5348                          STATION RECOVERY (1934)
 JV5348
 JV5348'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5348'THIS STATION WAS SEARCHED FOR WITHOUT SUCCESS.  IT IS RECOMMENDED
 JV5348'THAT THIS STATION BE LISTED AS LOST.  A NEW TRIANGULATION STATION
 JV5348'NAMED CARROL 1934 WAS PLACED ON THIS POINT OF LAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4765 ***********************************************************************
 AB4765  DESIGNATION -  CARROLLTON
 AB4765  PID         -  AB4765
 AB4765  STATE/COUNTY-  MD/CARROLL
 AB4765  COUNTRY     -  US
 AB4765  USGS QUAD   -  WESTMINSTER (2016)
 AB4765
 AB4765                         *CURRENT SURVEY CONTROL
 AB4765  ______________________________________________________________________
 AB4765* NAD 83(2011) POSITION- 39 34 32.36773(N) 076 55 05.92640(W)   ADJUSTED
 AB4765* NAD 83(2011) ELLIP HT-   222.814 (meters)        (06/27/12)   ADJUSTED
 AB4765* NAD 83(2011) EPOCH   -  2010.00
 AB4765* NAVD 88 ORTHO HEIGHT -   255.0   (meters)      837.    (feet) GPS OBS
 AB4765  ______________________________________________________________________
 AB4765  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4765  GEOID HEIGHT    -        -32.165 (meters)                     GEOID99
 AB4765  GEOID HEIGHT    -        -32.150 (meters)                     GEOID18
 AB4765  NAD 83(2011) X  -  1,114,278.652 (meters)                     COMP
 AB4765  NAD 83(2011) Y  - -4,795,269.617 (meters)                     COMP
 AB4765  NAD 83(2011) Z  -  4,041,923.555 (meters)                     COMP
 AB4765  LAPLACE CORR    -          1.15  (seconds)                    DEFLEC18
 AB4765
 AB4765  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4765  Standards:
 AB4765         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4765            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4765  -------------------------------------------------------------------
 AB4765  NETWORK    1.92   5.70           0.85   0.70   2.91     -0.18363135
 AB4765  -------------------------------------------------------------------
 AB4765  Click here for local accuracies and other accuracy information.
 AB4765
 AB4765.The horizontal coordinates were established by GPS observations
 AB4765.and adjusted by the National Geodetic Survey in June 2012.
 AB4765
 AB4765.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4765.been affixed to the stable North American tectonic plate. See 
 AB4765.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4765
 AB4765.The horizontal coordinates are valid at the epoch date displayed above
 AB4765.which is a decimal equivalence of Year/Month/Day.
 AB4765
 AB4765.The orthometric height was determined by GPS observations and a
 AB4765.high-resolution geoid model.
 AB4765
 AB4765.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4765.GEOID18 height accuracy estimate available here.
 AB4765
 AB4765.Click photographs - Photos may exist for this station.
 AB4765
 AB4765.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4765
 AB4765.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4765
 AB4765.The ellipsoidal height was determined by GPS observations
 AB4765.and is referenced to NAD 83.
 AB4765
 AB4765. The following values were computed from the NAD 83(2011) position.
 AB4765
 AB4765;                    North         East     Units Scale Factor Converg.
 AB4765;SPC MD       -   211,918.145   407,018.734   MT  1.00002440   +0 03 04.6
 AB4765;SPC MD       -   695,268.11  1,335,360.63   sFT  1.00002440   +0 03 04.6
 AB4765;UTM  18      - 4,382,418.692   335,238.448   MT  0.99993423   -1 13 20.7
 AB4765
 AB4765!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4765!SPC MD       -   0.99996504  x   1.00002440  =   0.99998944
 AB4765!UTM  18      -   0.99996504  x   0.99993423  =   0.99989928
 AB4765
 AB4765:                Primary Azimuth Mark                     Grid Az
 AB4765:SPC MD       -  CARROLLTON AZ MK                         343 13 41.8
 AB4765:UTM  18      -  CARROLLTON AZ MK                         344 30 07.1
 AB4765
 AB4765_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3523882418(NAD 83)
 AB4765
 AB4765|---------------------------------------------------------------------|
 AB4765| PID    Reference Object                     Distance      Geod. Az  |
 AB4765|                                                           dddmmss.s |
 AB4765| AB4749 CARROLLTON AZ MK                    APPROX. 1.3 KM 3431646.4 |
 AB4765|---------------------------------------------------------------------|
 AB4765
 AB4765                          SUPERSEDED SURVEY CONTROL
 AB4765
 AB4765  NAD 83(2007)-  39 34 32.36796(N)    076 55 05.92716(W) AD(2002.00) 0
 AB4765  ELLIP H (02/10/07)  222.833  (m)                       GP(2002.00)    
 AB4765  ELLIP H (08/30/02)  222.837  (m)                       GP(       ) 4 2
 AB4765  NAD 83(1991)-  39 34 32.36781(N)    076 55 05.92767(W) AD(       ) 1
 AB4765  ELLIP H (07/03/96)  222.758  (m)                       GP(       ) 1 1
 AB4765  NAVD 88 (07/03/96)  254.9    (m)  GEOID93  model used  GPS OBS        
 AB4765
 AB4765.Superseded values are not recommended for survey control.
 AB4765
 AB4765.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4765.See file dsdata.pdf to determine how the superseded data were derived.
 AB4765
 AB4765_MARKER: DD = SURVEY DISK
 AB4765_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4765_STAMPING: CARROLLON 1968
 AB4765_MARK LOGO: MDSHA
 AB4765_PROJECTION: PROJECTING 8 CENTIMETERS
 AB4765_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4765_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4765+STABILITY: SURFACE MOTION
 AB4765_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4765+SATELLITE: SATELLITE OBSERVATIONS - 1968
 AB4765
 AB4765  HISTORY     - Date     Condition        Report By
 AB4765  HISTORY     - 1968     MONUMENTED       MDSHA
 AB4765  HISTORY     - 20140408 POOR             GPSSS
 AB4765  HISTORY     - 20140526 POOR             RODCON
 AB4765
 AB4765                          STATION DESCRIPTION
 AB4765
 AB4765'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1968
 AB4765'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) EAST OF WESTMINSTER AND ABOUT
 AB4765'4.0 MI (6.4 KM) SOUTHWEST OF HAMPSTEAD. TO REACH STATION FROM THE
 AB4765'INTERSECTION OF MD ROUTE 27 (MANCHESTER ROAD) AND MD ROUTE 482
 AB4765'(HAMPSTEAD MEXICO ROAD) NORTH OF WESTMINSTER, GO EAST ON MD ROUTE 482
 AB4765'FOR 0.7 MI (1.1 KM) TO THE INTERSECTION WITH LEISTERS CHURCH ROAD.
 AB4765'TURN RIGHT ON LEISTERS CHURCH ROAD AND GO SOUTH FOR 1.96 MI (3.15 KM)
 AB4765'TO THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4765'DIAMETER CONCRETE MONUMENT SET 3 IN ABOVE THE GROUND. IT IS 32.0 FT
 AB4765'(9.8 M) EAST OF THE CENTERLINE OF THE ROAD AND 3.5 FT (1.1 M)
 AB4765'SOUTHEAST OF POWER POLE NO.78234.
 AB4765
 AB4765                          STATION RECOVERY (2014)
 AB4765
 AB4765'RECOVERY NOTE BY GPS SALES AND SERVICES 2014 (SS)
 AB4765'DESCRIBED BY STEVE SNYDER OF SNYDER SURVEYS. THE TOP OF THE MONUMENT
 AB4765'AND THE DISK ARE SHEERED OFF. THE CONCRETE BASE IS STILL INTACT.
 AB4765
 AB4765                          STATION RECOVERY (2014)
 AB4765
 AB4765'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AB4765'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4749 ***********************************************************************
 AB4749  DESIGNATION -  CARROLLTON AZ MK
 AB4749  PID         -  AB4749
 AB4749  STATE/COUNTY-  MD/CARROLL
 AB4749  COUNTRY     -  US
 AB4749  USGS QUAD   -  WESTMINSTER (2016)
 AB4749
 AB4749                         *CURRENT SURVEY CONTROL
 AB4749  ______________________________________________________________________
 AB4749* NAD 83(2011) POSITION- 39 35 13.78832(N) 076 55 22.00796(W)   ADJUSTED
 AB4749* NAD 83(2011) ELLIP HT-   229.509 (meters)        (06/27/12)   ADJUSTED
 AB4749* NAD 83(2011) EPOCH   -  2010.00
 AB4749* NAVD 88 ORTHO HEIGHT -   261.7   (meters)      859.    (feet) GPS OBS
 AB4749  ______________________________________________________________________
 AB4749  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4749  GEOID HEIGHT    -        -32.188 (meters)                     GEOID99
 AB4749  GEOID HEIGHT    -        -32.174 (meters)                     GEOID18
 AB4749  NAD 83(2011) X  -  1,113,721.776 (meters)                     COMP
 AB4749  NAD 83(2011) Y  - -4,794,568.633 (meters)                     COMP
 AB4749  NAD 83(2011) Z  -  4,042,912.405 (meters)                     COMP
 AB4749  LAPLACE CORR    -          1.45  (seconds)                    DEFLEC18
 AB4749
 AB4749  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4749  Standards:
 AB4749         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4749            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4749  -------------------------------------------------------------------
 AB4749  NETWORK    1.22   3.74           0.54   0.45   1.91     -0.11319053
 AB4749  -------------------------------------------------------------------
 AB4749  Click here for local accuracies and other accuracy information.
 AB4749
 AB4749.The horizontal coordinates were established by GPS observations
 AB4749.and adjusted by the National Geodetic Survey in June 2012.
 AB4749
 AB4749.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4749.been affixed to the stable North American tectonic plate. See 
 AB4749.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4749
 AB4749.The horizontal coordinates are valid at the epoch date displayed above
 AB4749.which is a decimal equivalence of Year/Month/Day.
 AB4749
 AB4749.The orthometric height was determined by GPS observations and a
 AB4749.high-resolution geoid model.
 AB4749
 AB4749.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4749.GEOID18 height accuracy estimate available here.
 AB4749
 AB4749.Click photographs - Photos may exist for this station.
 AB4749
 AB4749.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4749
 AB4749.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4749
 AB4749.The ellipsoidal height was determined by GPS observations
 AB4749.and is referenced to NAD 83.
 AB4749
 AB4749. The following values were computed from the NAD 83(2011) position.
 AB4749
 AB4749;                    North         East     Units Scale Factor Converg.
 AB4749;SPC MD       -   213,195.284   406,633.831   MT  1.00002687   +0 02 54.5
 AB4749;SPC MD       -   699,458.19  1,334,097.83   sFT  1.00002687   +0 02 54.5
 AB4749;UTM  18      - 4,383,703.955   334,882.065   MT  0.99993568   -1 13 32.1
 AB4749
 AB4749!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4749!SPC MD       -   0.99996399  x   1.00002687  =   0.99999086
 AB4749!UTM  18      -   0.99996399  x   0.99993568  =   0.99989968
 AB4749
 AB4749:                Primary Azimuth Mark                     Grid Az
 AB4749:SPC MD       -  CARROLLTON                               163 13 41.7
 AB4749:UTM  18      -  CARROLLTON                               164 30 08.3
 AB4749
 AB4749_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3488283703(NAD 83)
 AB4749
 AB4749|---------------------------------------------------------------------|
 AB4749| PID    Reference Object                     Distance      Geod. Az  |
 AB4749|                                                           dddmmss.s |
 AB4749| AB4765 CARROLLTON                          APPROX. 1.3 KM 1631636.2 |
 AB4749|---------------------------------------------------------------------|
 AB4749
 AB4749                          SUPERSEDED SURVEY CONTROL
 AB4749
 AB4749  NAD 83(2007)-  39 35 13.78855(N)    076 55 22.00872(W) AD(2002.00) 0
 AB4749  ELLIP H (02/10/07)  229.529  (m)                       GP(2002.00)    
 AB4749  ELLIP H (08/30/02)  229.532  (m)                       GP(       ) 4 2
 AB4749  NAD 83(1991)-  39 35 13.78820(N)    076 55 22.00927(W) AD(       ) 1
 AB4749  ELLIP H (07/03/96)  229.459  (m)                       GP(       ) 1 1
 AB4749  NAVD 88 (07/03/96)  261.7    (m)  GEOID93  model used  GPS OBS        
 AB4749
 AB4749.Superseded values are not recommended for survey control.
 AB4749
 AB4749.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4749.See file dsdata.pdf to determine how the superseded data were derived.
 AB4749
 AB4749_MARKER: DD = SURVEY DISK
 AB4749_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4749_STAMPING: CARROLLTON AZI 1995
 AB4749_MARK LOGO: MD-013
 AB4749_PROJECTION: FLUSH
 AB4749_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4749+STABILITY: SURFACE MOTION
 AB4749_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4749+SATELLITE: SATELLITE OBSERVATIONS - March 07, 2020
 AB4749
 AB4749  HISTORY     - Date     Condition        Report By
 AB4749  HISTORY     - 1995     MONUMENTED       MD-013
 AB4749  HISTORY     - 20140411 GOOD             GPSSS
 AB4749  HISTORY     - 20140526 GOOD             RODCON
 AB4749  HISTORY     - 20200307 GOOD             WTBALL
 AB4749
 AB4749                          STATION DESCRIPTION
 AB4749
 AB4749'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4749'STATION IS LOCATED ABOUT 4 MI (6.4 KM) NORTHEAST OF WESTMINSTER AND
 AB4749'ABOUT 4 MI (6.4 KM) SOUTHWEST OF HAMPSTEAD. TO REACH STATION FROM THE
 AB4749'INTERSECTION OF MD ROUTE 27 (MANCHESTER ROAD) AND MD ROUTE 482
 AB4749'(HAMPSTEAD MAXICO ROAD) GO EAST ON MD ROUTE 482 FOR 0.5 MI (0.8 KM) TO
 AB4749'THE INTERSECTION WITH LEISTERS SCHOOL ROAD. TURN RIGHT ON LEISTERS
 AB4749'SCHOOL ROAD AND GO SOUTH FOR 0.8 MI (1.3 KM) TO THE INTERSECTION WITH
 AB4749'RACOON CLUB ROAD. TURN LEFT ON RACOON CLUB ROAD AND GO EAST
 AB4749'FOR 0.15 MI(0.24 KM) TO THE INTERSECTION WITH GORSUCH ROAD NORTH.CROSS
 AB4749'INTERSECTION AND CONTINUE ON RACOON CLUB ROAD FOR 0.3 MI (0.5 KM) TO
 AB4749'THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4749'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 20.1 FT
 AB4749'(6.1 M) SOUTH OF THE CENTERLINE OF THE ROAD, 4.0 FT (1.2 M) NORTH OF
 AB4749'THE EDGE OF A CULTIVATED FIELD, 73.1 FT (22.3 M) EAST OF POWER POLE
 AB4749'NO.154242 AND 61.2 FT (18.7 M) SOUTHEAST OF TELEPHONE POLE NO.158.5.
 AB4749
 AB4749                          STATION RECOVERY (2014)
 AB4749
 AB4749'RECOVERY NOTE BY GPS SALES AND SERVICES 2014 (SS)
 AB4749'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYING.
 AB4749
 AB4749                          STATION RECOVERY (2014)
 AB4749
 AB4749'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AB4749'RECOVERED IN GOOD CONDITION.
 AB4749
 AB4749                          STATION RECOVERY (2020)
 AB4749
 AB4749'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AB4749'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6276 ***********************************************************************
 JV6276  DESIGNATION -  CARSINS
 JV6276  PID         -  JV6276
 JV6276  STATE/COUNTY-  MD/HARFORD
 JV6276  COUNTRY     -  US
 JV6276  USGS QUAD   -  ABERDEEN (2016)
 JV6276
 JV6276                         *CURRENT SURVEY CONTROL
 JV6276  ______________________________________________________________________
 JV6276* NAD 83(2011) POSITION- 39 32 12.87988(N) 076 12 36.49743(W)   ADJUSTED
 JV6276* NAD 83(2011) ELLIP HT-    53.793 (meters)        (06/27/12)   ADJUSTED
 JV6276* NAD 83(2011) EPOCH   -  2010.00
 JV6276* NAVD 88 ORTHO HEIGHT -    86.788 (meters)      284.74  (feet) ADJUSTED
 JV6276  ______________________________________________________________________
 JV6276  GEOID HEIGHT    -        -32.987 (meters)                     GEOID18
 JV6276  NAD 83(2011) X  -  1,174,083.436 (meters)                     COMP
 JV6276  NAD 83(2011) Y  - -4,783,665.356 (meters)                     COMP
 JV6276  NAD 83(2011) Z  -  4,038,499.092 (meters)                     COMP
 JV6276  LAPLACE CORR    -         -2.68  (seconds)                    DEFLEC18
 JV6276  DYNAMIC HEIGHT  -         86.744 (meters)      284.59  (feet) COMP
 JV6276  MODELED GRAVITY -    980,127.4   (mgal)                       NAVD 88
 JV6276
 JV6276  VERT ORDER      -  FIRST     CLASS II
 JV6276
 JV6276  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6276  Standards:
 JV6276         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6276            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6276  -------------------------------------------------------------------
 JV6276  NETWORK    0.79   1.39           0.34   0.30   0.71     -0.05159637
 JV6276  -------------------------------------------------------------------
 JV6276  Click here for local accuracies and other accuracy information.
 JV6276
 JV6276.The horizontal coordinates were established by GPS observations
 JV6276.and adjusted by the National Geodetic Survey in June 2012.
 JV6276
 JV6276.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6276.been affixed to the stable North American tectonic plate. See 
 JV6276.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6276
 JV6276.The horizontal coordinates are valid at the epoch date displayed above
 JV6276.which is a decimal equivalence of Year/Month/Day.
 JV6276
 JV6276.The orthometric height was determined by differential leveling and
 JV6276.adjusted by the NATIONAL GEODETIC SURVEY
 JV6276.in June 1991.
 JV6276
 JV6276.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6276.GEOID18 height accuracy estimate available here.
 JV6276
 JV6276.Click photographs - Photos may exist for this station.
 JV6276
 JV6276.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6276
 JV6276.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6276
 JV6276.The ellipsoidal height was determined by GPS observations
 JV6276.and is referenced to NAD 83.
 JV6276
 JV6276.The dynamic height is computed by dividing the NAVD 88
 JV6276.geopotential number by the normal gravity value computed on the
 JV6276.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6276.degrees latitude (g = 980.6199 gals.).
 JV6276
 JV6276.The modeled gravity was interpolated from observed gravity values.
 JV6276
 JV6276. The following values were computed from the NAD 83(2011) position.
 JV6276
 JV6276;                    North         East     Units Scale Factor Converg.
 JV6276;SPC MD       -   207,906.792   467,903.031   MT  1.00001636   +0 29 44.7
 JV6276;SPC MD       -   682,107.53  1,535,111.86   sFT  1.00001636   +0 29 44.7
 JV6276;UTM  18      - 4,377,060.087   396,007.085   MT  0.99973315   -0 46 13.5
 JV6276
 JV6276!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6276!SPC MD       -   0.99999156  x   1.00001636  =   1.00000792
 JV6276!UTM  18      -   0.99999156  x   0.99973315  =   0.99972471
 JV6276
 JV6276:                Primary Azimuth Mark                     Grid Az
 JV6276:SPC MD       -  CARSINS AZ MK                            282 32 20.7
 JV6276:UTM  18      -  CARSINS AZ MK                            283 48 18.9
 JV6276
 JV6276_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9600777060(NAD 83)
 JV6276
 JV6276|---------------------------------------------------------------------|
 JV6276| PID    Reference Object                     Distance      Geod. Az  |
 JV6276|                                                           dddmmss.s |
 JV6276| JV6312 CARSINS AZ MK                       APPROX. 0.7 KM 2830205.4 |
 JV6276|---------------------------------------------------------------------|
 JV6276
 JV6276                          SUPERSEDED SURVEY CONTROL
 JV6276
 JV6276  NAD 83(2007)-  39 32 12.87995(N)    076 12 36.49825(W) AD(2002.00) 0
 JV6276  ELLIP H (02/10/07)   53.810  (m)                       GP(2002.00)    
 JV6276  ELLIP H (09/18/02)   53.833  (m)                       GP(       ) 4 2
 JV6276  NAD 83(1991)-  39 32 12.87940(N)    076 12 36.49898(W) AD(       ) 1
 JV6276  ELLIP H (01/27/92)   53.822  (m)                       GP(       ) 4 1
 JV6276  NAD 83(1986)-  39 32 12.87320(N)    076 12 36.50514(W) AD(       ) 1
 JV6276  NGVD 29              87.02   (m)          285.5    (f) LEVELING    3  
 JV6276
 JV6276.Superseded values are not recommended for survey control.
 JV6276
 JV6276.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6276.See file dsdata.pdf to determine how the superseded data were derived.
 JV6276
 JV6276_MARKER: DD = SURVEY DISK
 JV6276_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6276_STAMPING: 27 CARSINS 1989
 JV6276_MARK LOGO: MD-025
 JV6276_PROJECTION: RECESSED 3 CENTIMETERS
 JV6276_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6276_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6276+STABILITY: SURFACE MOTION
 JV6276_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6276+SATELLITE: SATELLITE OBSERVATIONS - December 14, 2023
 JV6276
 JV6276  HISTORY     - Date     Condition        Report By
 JV6276  HISTORY     - 1989     MONUMENTED       RDA
 JV6276  HISTORY     - 19931209 GOOD             GEOMET
 JV6276  HISTORY     - 20020309 GOOD             USPSQD
 JV6276  HISTORY     - 20030524 GOOD             GEOCAC
 JV6276  HISTORY     - 20110802 GOOD             INDIV
 JV6276  HISTORY     - 20231214 GOOD             MDSHA
 JV6276
 JV6276                          STATION DESCRIPTION
 JV6276
 JV6276'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6276'THE STATION IS LOCATED IN SOUTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6276'1.4 MILES NORTHEAST OF THE TOWN OF ABERDEEN ON STATE HIGHWAY 22.  TO
 JV6276'REACH THE STATION FROM THE INTERCHANGE U.S. HIGHWAY 99 AND STATE
 JV6276'HIGHWAY 22 PROCEED NORTHWEST ALONG HIGHWAY 22 1.4 MILES TO LYNN LEE
 JV6276'DRIVE AND THE STATION ON THE RIGHT.  THE STATION IS A STANDARD
 JV6276'HARFORD COUNTY STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND
 JV6276'STAMPED 27 CARSINS 1989.  THE STATION IS 54.4 FEET EAST OF C AND P
 JV6276'POLE NUMBER 109, 16.8 FEET NORTHWEST FROM C AND P POLE NUMBER 108
 JV6276'1/2, 3.8 FEET NORTHEAST FROM THE EDGE OF PAVEMENT OF HIGHWAY 22.
 JV6276
 JV6276                          STATION RECOVERY (1993)
 JV6276
 JV6276'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6276'RECOVERED IN GOOD CONDITION.
 JV6276
 JV6276                          STATION RECOVERY (2002)
 JV6276
 JV6276'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV6276'RECOVERED IN GOOD CONDITION.
 JV6276
 JV6276                          STATION RECOVERY (2003)
 JV6276
 JV6276'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV6276'STATION IS LOCATED ALONG STATE HWY 22 ABOUT 3 MILES NORTHWEST OF THE
 JV6276'CENTER OF ABERDEEN AND ABOUT 1.3 MILES NORTHWEST OF THE INTERCHANGE
 JV6276'WITH I-95 (CORRECTING DISTANCES, DIRECTION AND HIGHWAY DESIGNATION IN
 JV6276'1989 DESCRIPTION). A WITNESS POST HAS BEEN PLACED NEXT TO POWER POLE
 JV6276'108 1/2.
 JV6276
 JV6276                          STATION RECOVERY (2011)
 JV6276
 JV6276'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 JV6276'RECOVERED BY WRA (JFS)
 JV6276'DESCRIPTION IS ADEQUATE
 JV6276
 JV6276                          STATION RECOVERY (2023)
 JV6276
 JV6276'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV6276'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6312 ***********************************************************************
 JV6312  DESIGNATION -  CARSINS AZ MK
 JV6312  PID         -  JV6312
 JV6312  STATE/COUNTY-  MD/HARFORD
 JV6312  COUNTRY     -  US
 JV6312  USGS QUAD   -  ABERDEEN (2016)
 JV6312
 JV6312                         *CURRENT SURVEY CONTROL
 JV6312  ______________________________________________________________________
 JV6312* NAD 83(2011) POSITION- 39 32 18.07050(N) 076 13 05.45969(W)   ADJUSTED
 JV6312* NAD 83(2011) ELLIP HT-    68.769 (meters)        (06/27/12)   ADJUSTED
 JV6312* NAD 83(2011) EPOCH   -  2010.00
 JV6312* NAVD 88 ORTHO HEIGHT -   101.735 (meters)      333.78  (feet) ADJUSTED
 JV6312  ______________________________________________________________________
 JV6312  GEOID HEIGHT    -        -32.973 (meters)                     GEOID18
 JV6312  NAD 83(2011) X  -  1,173,390.210 (meters)                     COMP
 JV6312  NAD 83(2011) Y  - -4,783,742.410 (meters)                     COMP
 JV6312  NAD 83(2011) Z  -  4,038,632.082 (meters)                     COMP
 JV6312  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 JV6312  DYNAMIC HEIGHT  -        101.685 (meters)      333.61  (feet) COMP
 JV6312  MODELED GRAVITY -    980,127.1   (mgal)                       NAVD 88
 JV6312
 JV6312  VERT ORDER      -  FIRST     CLASS II
 JV6312
 JV6312  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6312  Standards:
 JV6312         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6312            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6312  -------------------------------------------------------------------
 JV6312  NETWORK    0.92   1.49           0.41   0.34   0.76     -0.04038002
 JV6312  -------------------------------------------------------------------
 JV6312  Click here for local accuracies and other accuracy information.
 JV6312
 JV6312.The horizontal coordinates were established by GPS observations
 JV6312.and adjusted by the National Geodetic Survey in June 2012.
 JV6312
 JV6312.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6312.been affixed to the stable North American tectonic plate. See 
 JV6312.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6312
 JV6312.The horizontal coordinates are valid at the epoch date displayed above
 JV6312.which is a decimal equivalence of Year/Month/Day.
 JV6312
 JV6312.The orthometric height was determined by differential leveling and
 JV6312.adjusted by the NATIONAL GEODETIC SURVEY
 JV6312.in June 1991.
 JV6312
 JV6312.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6312.GEOID18 height accuracy estimate available here.
 JV6312
 JV6312.Click photographs - Photos may exist for this station.
 JV6312
 JV6312.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6312
 JV6312.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6312
 JV6312.The ellipsoidal height was determined by GPS observations
 JV6312.and is referenced to NAD 83.
 JV6312
 JV6312.The dynamic height is computed by dividing the NAVD 88
 JV6312.geopotential number by the normal gravity value computed on the
 JV6312.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6312.degrees latitude (g = 980.6199 gals.).
 JV6312
 JV6312.The modeled gravity was interpolated from observed gravity values.
 JV6312
 JV6312. The following values were computed from the NAD 83(2011) position.
 JV6312
 JV6312;                    North         East     Units Scale Factor Converg.
 JV6312;SPC MD       -   208,060.917   467,210.056   MT  1.00001665   +0 29 26.5
 JV6312;SPC MD       -   682,613.19  1,532,838.33   sFT  1.00001665   +0 29 26.5
 JV6312;UTM  18      - 4,377,229.439   395,317.880   MT  0.99973492   -0 46 32.0
 JV6312
 JV6312!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6312!SPC MD       -   0.99998921  x   1.00001665  =   1.00000586
 JV6312!UTM  18      -   0.99998921  x   0.99973492  =   0.99972413
 JV6312
 JV6312:                Primary Azimuth Mark                     Grid Az
 JV6312:SPC MD       -  CARSINS                                  102 32 20.4
 JV6312:UTM  18      -  CARSINS                                  103 48 18.9
 JV6312
 JV6312_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9531777229(NAD 83)
 JV6312
 JV6312|---------------------------------------------------------------------|
 JV6312| PID    Reference Object                     Distance      Geod. Az  |
 JV6312|                                                           dddmmss.s |
 JV6312| JV6276 CARSINS                             APPROX. 0.7 KM 1030146.9 |
 JV6312|---------------------------------------------------------------------|
 JV6312
 JV6312                          SUPERSEDED SURVEY CONTROL
 JV6312
 JV6312  NAD 83(2007)-  39 32 18.07056(N)    076 13 05.46053(W) AD(2002.00) 0
 JV6312  ELLIP H (02/10/07)   68.787  (m)                       GP(2002.00)    
 JV6312  ELLIP H (09/18/02)   68.804  (m)                       GP(       ) 4 2
 JV6312  NAD 83(1991)-  39 32 18.07012(N)    076 13 05.46115(W) AD(       ) 1
 JV6312  ELLIP H (01/27/92)   68.793  (m)                       GP(       ) 4 1
 JV6312  NAD 83(1986)-  39 32 18.06361(N)    076 13 05.46741(W) AD(       ) 1
 JV6312  NGVD 29             101.97   (m)          334.5    (f) LEVELING    3  
 JV6312
 JV6312.Superseded values are not recommended for survey control.
 JV6312
 JV6312.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6312.See file dsdata.pdf to determine how the superseded data were derived.
 JV6312
 JV6312_MARKER: DZ = AZIMUTH MARK DISK
 JV6312_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6312_STAMPING: 27 CARSINS 1989
 JV6312_MARK LOGO: MD-025
 JV6312_PROJECTION: RECESSED 3 CENTIMETERS
 JV6312_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6312_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6312+STABILITY: SURFACE MOTION
 JV6312_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6312+SATELLITE: SATELLITE OBSERVATIONS - December 14, 2023
 JV6312
 JV6312  HISTORY     - Date     Condition        Report By
 JV6312  HISTORY     - 1989     MONUMENTED       RDA
 JV6312  HISTORY     - 20020309 GOOD             USPSQD
 JV6312  HISTORY     - 20040913 GOOD             GEOCAC
 JV6312  HISTORY     - 20231214 GOOD             MDSHA
 JV6312
 JV6312                          STATION DESCRIPTION
 JV6312
 JV6312'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6312'THE STATION IS LOCATED IN SOUTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6312'1.4 MILES NORTHEAST OF THE TOWN OF ABERDEEN ON STATE HIGHWAY 22.  TO
 JV6312'REACH THE STATION FROM THE INTERCHANGE U.S. HIGHWAY 99 AND STATE
 JV6312'HIGHWAY 22 PROCEED NORTHWEST ALONG HIGHWAY 22 1.4 MILES TO LYNN LEE
 JV6312'DRIVE AND THE STATION ON THE RIGHT.  TO REACH THE AZIMUTH MARK FROM
 JV6312'THE STATION PROCEED NORITHWEST ALONG HIGHWAY 22 0.4 MILES TO THE MARK
 JV6312'ON THE LEFT.  THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET
 JV6312'IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 27 CARSINS 1989.  THE
 JV6312'MARK IS 51.0 FEET SOUTHEAST FROM G AND E POLE NUMBER 266188, 54.4
 JV6312'FEET NORTHWEST FROM G AND E POLE NUMBER 266187, 13.9 FEET SOUTHWEST
 JV6312'FROM THE SOUTH EDGE OF PAVEMENT OF HIGHWAY 22, AND 2329.02 FEET FROM
 JV6312'THE STATION.
 JV6312
 JV6312                          STATION RECOVERY (2002)
 JV6312
 JV6312'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV6312'RECOVERED IN GOOD CONDITION.
 JV6312
 JV6312                          STATION RECOVERY (2004)
 JV6312
 JV6312'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV6312'RECOVERED IN GOOD CONDITION.
 JV6312
 JV6312                          STATION RECOVERY (2023)
 JV6312
 JV6312'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV6312'RECOVERED IN GOOD CONDITION.
 JV6312'
 JV6312'THE MARK IS 34.2 FT (10.4 M) SOUTHEAST OF THE CENTERLINE OF STATE
 JV6312'ROUTE MD 22, 16.0 FT (4.9 M) EAST-SOUTHEAST OF THE CENTERLINE OF A
 JV6312'PAVED DRIVEWAY FOR 3455 CHURCHVILLE ROAD AND ABOUT HIGHER THAN THE
 JV6312'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3519 ***********************************************************************
 JU3519  DESIGNATION -  CARTER
 JU3519  PID         -  JU3519
 JU3519  STATE/COUNTY-  MD/CECIL
 JU3519  COUNTRY     -  US
 JU3519  USGS QUAD   -  CECILTON (2016)
 JU3519
 JU3519                         *CURRENT SURVEY CONTROL
 JU3519  ______________________________________________________________________
 JU3519* NAD 83(1991) POSITION- 39 27 39.76792(N) 075 46 24.32530(W)   ADJUSTED
 JU3519* NAVD 88 ORTHO HEIGHT -     6.4   (meters)       21.    (feet) VERTCON3
 JU3519  ______________________________________________________________________
 JU3519  GEOID HEIGHT    -        -33.470 (meters)                     GEOID18
 JU3519  LAPLACE CORR    -         -1.04  (seconds)                    DEFLEC18
 JU3519  HORZ ORDER      -  SECOND
 JU3519
 JU3519.The horizontal coordinates were established by classical geodetic methods
 JU3519.and adjusted by the National Geodetic Survey in January 1992.
 JU3519
 JU3519.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3519.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3519
 JU3519.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3519.GEOID18 height accuracy estimate available here.
 JU3519
 JU3519.Click photographs - Photos may exist for this station.
 JU3519
 JU3519.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3519
 JU3519. The following values were computed from the NAD 83(1991) position.
 JU3519
 JU3519;                    North         East     Units Scale Factor Converg.
 JU3519;SPC MD       -   199,899.266   505,557.918   MT  1.00000195   +0 46 11.4
 JU3519;SPC MD       -   655,836.18  1,658,651.27   sFT  1.00000195   +0 46 11.4
 JU3519;UTM  18      - 4,368,226.876   433,464.297   MT  0.99965450   -0 29 29.7
 JU3519
 JU3519!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3519!SPC MD       -   1.00000425  x   1.00000195  =   1.00000620
 JU3519!UTM  18      -   1.00000425  x   0.99965450  =   0.99965875
 JU3519
 JU3519:                Primary Azimuth Mark                     Grid Az
 JU3519:SPC MD       -  BOHEMIA                                  354 59 26.0
 JU3519:UTM  18      -  BOHEMIA                                  356 15 07.1
 JU3519
 JU3519_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3346468226(NAD 83)
 JU3519
 JU3519|---------------------------------------------------------------------|
 JU3519| PID    Reference Object                     Distance      Geod. Az  |
 JU3519|                                                           dddmmss.s |
 JU3519| CB1322 CARTER RM 1                          26.410 METERS 00516     |
 JU3519| JU3518 BOUNDARY MONUMENT 69 DEL MD          14.962 METERS 14643     |
 JU3519| CB1324 CARTER RM 3                          52.975 METERS 16114     |
 JU3519| CB1323 CARTER RM 2                          27.237 METERS 24050     |
 JU3519| JU3521 BOHEMIA                             APPROX. 1.6 KM 3554537.4 |
 JU3519|---------------------------------------------------------------------|
 JU3519
 JU3519                          SUPERSEDED SURVEY CONTROL
 JU3519
 JU3519  NAD 83(1986)-  39 27 39.76070(N)    075 46 24.33312(W) AD(       ) 2
 JU3519  NAD 27      -  39 27 39.35940(N)    075 46 25.57080(W) AD(       ) 2
 JU3519  NGVD 29 (07/19/86)    6.6    (m)           22.     (f) VERT ANG       
 JU3519
 JU3519.Superseded values are not recommended for survey control.
 JU3519
 JU3519.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3519.See file dsdata.pdf to determine how the superseded data were derived.
 JU3519
 JU3519_MARKER: DS = TRIANGULATION STATION DISK
 JU3519_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3519_STAMPING: CARTER 1961
 JU3519_MARK LOGO: CGS
 JU3519_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3519+STABILITY: SURFACE MOTION
 JU3519
 JU3519  HISTORY     - Date     Condition        Report By
 JU3519  HISTORY     - 1961     MONUMENTED       CGS
 JU3519
 JU3519                          STATION DESCRIPTION
 JU3519
 JU3519'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3519'THE STATION IS LOCATED ABOUT 3.0 MILES NORTH OF WARWICK, MARYLAND,
 JU3519'3.0 MILES NORTHWEST OF MIDDLETOWN, DELAWARE AND ON PROPERTY OWNED
 JU3519'BY MR. H.B. CARTER, WHO LIVES ABOUT 0.5 MILE NORTHEAST OF THE
 JU3519'STATION.  IT IS 120.0 FEET EAST OF THE CENTERLINE OF A BLACKTOP
 JU3519'ROAD, 95.0 FEET NORTH OF A WOODS ROAD, 25.9 FEET NORTH-NORTHEAST
 JU3519'OF AN 18-INCH PINE TREE WITH A TRIANGULAR BLAZE AND 6.9 FEET
 JU3519'WEST OF A STANDARD METAL WITNESS POST AND MARKER.
 JU3519'
 JU3519'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 299, 896
 JU3519'AND THE INTERSECTION OF BROAD AND MAIN STREET IN MIDDLETOWN,
 JU3519'DELAWARE.  GO WEST ON MAIN STREET AND STATE HIGHWAY 299 FOR 0.2
 JU3519'MILE TO THE JUNCTION OF U.S. HIGHWAY 301.  CONTINUE WEST ON
 JU3519'STATE HIGHWAY 299 AND U.S. HIGHWAY 301 FOR 0.4 MILE TO A SIDE
 JU3519'ROAD ON THE NORTHWEST SIDE OF THE HIGHWAY.  TURN RIGHT AND GO
 JU3519'NORTHWEST ON A BLACKTOP ROAD FOR 3.0 MILES TO A FORK AT THE
 JU3519'BOHEMIA MILLS POND.  TAKE THE LEFT HAND FORK AND GO SOUTH ON A
 JU3519'BLACKTOP ROAD FOR 0.3 MILE TO A ROAD INTO THE WOODS ON THE
 JU3519'LEFT JUST BEFORE REACHING A BRIDGE.  TURN LEFT, EAST, INTO THE
 JU3519'WOODS, PASSING THROUGH A GATE, FOR ABOUT 115.0 FEET, THENCE
 JU3519'NORTH FOR ABOUT 95.0 FEET TO THE STATION.
 JU3519'
 JU3519'THE STATION MARK, A STANDARD DISK STAMPED CARTER 1961, IS SET
 JU3519'IN THE TOP OF A SQUARE CONCRETE MONUMENT PROJECTING ABOUT 2 INCHES
 JU3519'ABOVE THE SURFACE OF THE GROUND.
 JU3519'
 JU3519'REFERENCE MARK 1, A STANDARD DISK STAMPED CARTER NO 1 1961, IS SET
 JU3519'IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT
 JU3519'3 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 111.0 FEET
 JU3519'NORTH-NORTHEAST OF AN 18-INCH PINE TREE WITH A TRIANGULAR BLAZE
 JU3519'AND 86.5 FEET NORTH OF THE STANDARD METAL WITNESS POST AND
 JU3519'MARKER.
 JU3519'
 JU3519'REFERENCE MARK 2, A STANDARD DISK STAMPED CARTER NO 2 1961, IS SET
 JU3519'IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT FLUSH WITH THE
 JU3519'SURFACE OF THE GROUND.  IT IS 96.9 FEET SOUTHWEST OF THE STANDARD
 JU3519'METAL WITNESS POST AND MARKER, 65.4 FEET EAST OF THE CENTERLINE
 JU3519'OF A BLACKTOP ROAD AND 53.0 FEET NORTH OF THE CENTERLINE OF THE
 JU3519'WOODS ROAD.
 JU3519'
 JU3519'REFERENCE MARK 3, A STANDARD DISK STAMPED CARTER NO 3 1961, IS SET
 JU3519'IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS ABOUT 2
 JU3519'INCHES BELOW THE SURFACE OF THE GROUND.
 JU3519'
 JU3519'IT IS 87.4 FEET SOUTH OF THE CENTERLINE OF THE WOODS ROAD, 33.3
 JU3519'FEET SOUTH OF A 14-INCH PINE TREE AND 1.9 FEET NORTH OF A
 JU3519'STANDARD METAL WITNESS POST AND MARKER.
 JU3519'
 JU3519'BOUNDARY MONUMENT NO. 69, IS A 12-INCH SQUARE STONE MONUMENT WITH
 JU3519'THE LETTER M AND P INSCRIBED ON THE WEST AND EAST SIDE.  IT IS AT
 JU3519'THE EAST EDGE OF A SMALL CLEARING, 47.0 FEET NORTH OF A WOODS
 JU3519'ROAD AND 25.0 FEET EAST OF AN 18-INCH PINE TREE WITH A TRIANGULAR
 JU3519'BLAZE.  THE MONUMENT LEANS SLIGHTLY TO THE SOUTHWEST.  A TRAVERSE
 JU3519'CONNECTION WAS MADE FROM THE MONUMENT TO THE STATION.  THE
 JU3519'MONUMENT PROJECTS ABOUT 30 INCHES ABOVE THE SURFACE OF THE
 JU3519'GROUND.
 JU3519'
 JU3519'HEIGHT OF LIGHT ABOVE STATION MARK 38.53 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6212 ***********************************************************************
 DN6212  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6212  DESIGNATION -  CASSIDY
 DN6212  PID         -  DN6212
 DN6212  STATE/COUNTY-  MD/CECIL
 DN6212  COUNTRY     -  US
 DN6212  USGS QUAD   -  EARLEVILLE (2016)
 DN6212
 DN6212                         *CURRENT SURVEY CONTROL
 DN6212  ______________________________________________________________________
 DN6212* NAD 83(2011) POSITION- 39 23 55.79739(N) 075 58 29.87512(W)   ADJUSTED
 DN6212* NAD 83(2011) ELLIP HT-   -10.700 (meters)        (06/27/12)   ADJUSTED
 DN6212* NAD 83(2011) EPOCH   -  2010.00
 DN6212* NAVD 88 ORTHO HEIGHT -    22.71  (meters)       74.5   (feet) GPS OBS
 DN6212  ______________________________________________________________________
 DN6212  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6212  GEOID HEIGHT    -        -33.380 (meters)                     GEOID03
 DN6212  GEOID HEIGHT    -        -33.407 (meters)                     GEOID18
 DN6212  NAD 83(2011) X  -  1,196,057.720 (meters)                     COMP
 DN6212  NAD 83(2011) Y  - -4,788,211.740 (meters)                     COMP
 DN6212  NAD 83(2011) Z  -  4,026,623.526 (meters)                     COMP
 DN6212  LAPLACE CORR    -         -1.50  (seconds)                    DEFLEC18
 DN6212
 DN6212  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6212  Standards:
 DN6212         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6212            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6212  -------------------------------------------------------------------
 DN6212  NETWORK    0.86   1.69           0.40   0.28   0.86      0.07941848
 DN6212  -------------------------------------------------------------------
 DN6212  Click here for local accuracies and other accuracy information.
 DN6212
 DN6212.The horizontal coordinates were established by GPS observations
 DN6212.and adjusted by the National Geodetic Survey in June 2012.
 DN6212
 DN6212.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6212.been affixed to the stable North American tectonic plate. See 
 DN6212.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6212
 DN6212.The horizontal coordinates are valid at the epoch date displayed above
 DN6212.which is a decimal equivalence of Year/Month/Day.
 DN6212
 DN6212.The orthometric height was determined by GPS observations and a
 DN6212.high-resolution geoid model using precise GPS observation and
 DN6212.processing techniques.
 DN6212
 DN6212.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6212.GEOID18 height accuracy estimate available here.
 DN6212
 DN6212.Click photographs - Photos may exist for this station.
 DN6212
 DN6212.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6212
 DN6212.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6212
 DN6212.The ellipsoidal height was determined by GPS observations
 DN6212.and is referenced to NAD 83.
 DN6212
 DN6212. The following values were computed from the NAD 83(2011) position.
 DN6212
 DN6212;                    North         East     Units Scale Factor Converg.
 DN6212;SPC MD       -   192,778.593   488,291.807   MT  0.99999145   +0 38 36.0
 DN6212;SPC MD       -   632,474.43  1,602,004.04   sFT  0.99999145   +0 38 36.0
 DN6212;UTM  18      - 4,361,490.355   416,051.254   MT  0.99968677   -0 37 07.9
 DN6212
 DN6212!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6212!SPC MD       -   1.00000168  x   0.99999145  =   0.99999313
 DN6212!UTM  18      -   1.00000168  x   0.99968677  =   0.99968845
 DN6212
 DN6212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1605161490(NAD 83)
 DN6212
 DN6212                          SUPERSEDED SURVEY CONTROL
 DN6212
 DN6212  NAD 83(2007)-  39 23 55.79754(N)    075 58 29.87584(W) AD(2002.00) 1
 DN6212  ELLIP H (02/23/12)  -10.665  (m)                       GP(2002.00) 4 1
 DN6212
 DN6212.Superseded values are not recommended for survey control.
 DN6212
 DN6212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6212.See file dsdata.pdf to determine how the superseded data were derived.
 DN6212
 DN6212_MARKER: DD = SURVEY DISK
 DN6212_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6212_STAMPING: CASSIDY 2008
 DN6212_MARK LOGO: MD-015
 DN6212_PROJECTION: FLUSH
 DN6212_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6212_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6212+STABILITY: SURFACE MOTION
 DN6212_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6212+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6212
 DN6212  HISTORY     - Date     Condition        Report By
 DN6212  HISTORY     - 20081204 MONUMENTED       GWS
 DN6212
 DN6212                          STATION DESCRIPTION
 DN6212
 DN6212'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6212'THE STATION IS LOCATED ABOUT 5.7 MI (9.2 KM) WEST OF CECILTON, 5.2 MI
 DN6212'(8.4 KM) EAST-NORTHEAST OF BETTERTON AND 3.3 MI (5.3 KM)
 DN6212'WEST-SOUTHWEST OF EARLEVILLE.
 DN6212'
 DN6212'TO REACH THE STATION FROM THE JUNCTION OF AUGUSTINE HERMAN HIGHWAY
 DN6212'(ROUTE 213) AND CRYSTAL BEACH ROAD (ROUTE 282), PROCEED WEST ON
 DN6212'CRYSTAL BEACH ROAD FOR 2.38 MI (3.8 KM) TO A Y-FORK.  BEAR LEFT AND GO
 DN6212'WEST ON SANDY BOTTOM ROAD/GROVE NECK ROAD FOR 3.64 MI (5.9 KM) TO THE
 DN6212'STATION ON THE RIGHT.
 DN6212'
 DN6212'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6212'CONCRETE MONUMENT ON THE NORTH SIDE OF GROVE NECK ROAD, ABOUT 0.30 MI
 DN6212'(0.5 KM) WEST OF STEMMERS RUN ROAD, 15.7 NORTH OF THE CENTERLINE OF
 DN6212'GROVE NECK ROAD, 52.5 FT (16.0 M) WEST OF A VERIZON BOX AND 224.5 FT
 DN6212'(68.4 M) SOUTHEAST OF A TAN STUCCO HOUSE AT 1545 GROVE NECK ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3567 ***********************************************************************
 JU3567  DESIGNATION -  CASSIDYS WHARF
 JU3567  PID         -  JU3567
 JU3567  STATE/COUNTY-  MD/CECIL
 JU3567  COUNTRY     -  US
 JU3567  USGS QUAD   -  EARLEVILLE (2016)
 JU3567
 JU3567                         *CURRENT SURVEY CONTROL
 JU3567  ______________________________________________________________________
 JU3567* NAD 83(1991) POSITION- 39 22 42.40557(N) 075 57 42.40200(W)   ADJUSTED
 JU3567* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 JU3567  ______________________________________________________________________
 JU3567  GEOID HEIGHT    -        -33.425 (meters)                     GEOID18
 JU3567  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 JU3567  HORZ ORDER      -  THIRD
 JU3567
 JU3567.The horizontal coordinates were established by classical geodetic methods
 JU3567.and adjusted by the National Geodetic Survey in January 1992.
 JU3567
 JU3567.The orthometric height was scaled from a topographic map.
 JU3567
 JU3567.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3567.GEOID18 height accuracy estimate available here.
 JU3567
 JU3567.Click photographs - Photos may exist for this station.
 JU3567
 JU3567.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3567
 JU3567. The following values were computed from the NAD 83(1991) position.
 JU3567
 JU3567;                    North         East     Units Scale Factor Converg.
 JU3567;SPC MD       -   190,528.217   489,453.365   MT  0.99998827   +0 39 05.8
 JU3567;SPC MD       -   625,091.33  1,605,814.92   sFT  0.99998827   +0 39 05.8
 JU3567;UTM  18      - 4,359,215.634   417,162.628   MT  0.99968449   -0 36 36.8
 JU3567
 JU3567!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3567!SPC MD       -   1.00000465  x   0.99998827  =   0.99999292
 JU3567!UTM  18      -   1.00000465  x   0.99968449  =   0.99968914
 JU3567
 JU3567:                Primary Azimuth Mark                     Grid Az
 JU3567:SPC MD       -  ROBERTSON 1898                           077 04 12.1
 JU3567:UTM  18      -  ROBERTSON 1898                           078 19 54.7
 JU3567
 JU3567_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1716259215(NAD 83)
 JU3567
 JU3567|---------------------------------------------------------------------|
 JU3567| PID    Reference Object                     Distance      Geod. Az  |
 JU3567|                                                           dddmmss.s |
 JU3567| JU3598 ROBERTSON 1898                      APPROX. 1.0 KM 0774317.9 |
 JU3567| JU3555 BOATHOUSE FLAGSTAFF                 APPROX. 2.6 KM 2512302.4 |
 JU3567|---------------------------------------------------------------------|
 JU3567
 JU3567                          SUPERSEDED SURVEY CONTROL
 JU3567
 JU3567  NAD 83(1986)-  39 22 42.39761(N)    075 57 42.40895(W) AD(       ) 3
 JU3567  NAD 27      -  39 22 42.00500(N)    075 57 43.61200(W) AD(       ) 3
 JU3567  USSD        -  39 22 42.39000(N)    075 57 43.49000(W) AD(       ) 3
 JU3567
 JU3567.Superseded values are not recommended for survey control.
 JU3567
 JU3567.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3567.See file dsdata.pdf to determine how the superseded data were derived.
 JU3567
 JU3567_MARKER: 61 = POLE
 JU3567
 JU3567  HISTORY     - Date     Condition        Report By
 JU3567  HISTORY     - 1898     FIRST OBSERVED   CGS
 JU3567  HISTORY     - 1900     GOOD             CGS
 JU3567
 JU3567                          STATION DESCRIPTION
 JU3567
 JU3567'DESCRIBED BY COAST AND GEODETIC SURVEY 1900
 JU3567'ON N SIDE OF SASSAFRAS RIVER, ON CASSIDYS WHARF, NEAR THE INNER
 JU3567'NE SHORE CORNER, AND ABOUT 4 FEET FROM E EDGE OF WHARF.  MARKED
 JU3567'BY SIGNAL POLE IN BOX 3 BY 3 INCHES AND 3 FEET DEEP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5957 ***********************************************************************
 JV5957  DESIGNATION -  CASTLE
 JV5957  PID         -  JV5957
 JV5957  STATE/COUNTY-  MD/MONTGOMERY
 JV5957  COUNTRY     -  US
 JV5957  USGS QUAD   -  BELTSVILLE (2016)
 JV5957
 JV5957                         *CURRENT SURVEY CONTROL
 JV5957  ______________________________________________________________________
 JV5957* NAD 83(1991) POSITION- 39 05 09.48890(N) 076 56 31.56503(W)   ADJUSTED
 JV5957* NAVD 88 ORTHO HEIGHT -   162.3   (meters)      532.    (feet) VERTCON3
 JV5957  ______________________________________________________________________
 JV5957  GEOID HEIGHT    -        -32.061 (meters)                     GEOID18
 JV5957  LAPLACE CORR    -         -3.47  (seconds)                    DEFLEC18
 JV5957  HORZ ORDER      -  FIRST
 JV5957
 JV5957.The horizontal coordinates were established by classical geodetic methods
 JV5957.and adjusted by the National Geodetic Survey in January 1992.
 JV5957
 JV5957.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5957.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5957
 JV5957.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5957.GEOID18 height accuracy estimate available here.
 JV5957
 JV5957.Click photographs - Photos may exist for this station.
 JV5957
 JV5957.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5957
 JV5957. The following values were computed from the NAD 83(1991) position.
 JV5957
 JV5957;                    North         East     Units Scale Factor Converg.
 JV5957;SPC MD       -   157,551.335   405,009.255   MT  0.99995656   +0 02 10.8
 JV5957;SPC MD       -   516,899.67  1,328,767.86   sFT  0.99995656   +0 02 10.8
 JV5957;UTM  18      - 4,328,111.997   332,027.062   MT  0.99994743   -1 13 29.1
 JV5957
 JV5957!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5957!SPC MD       -   0.99997957  x   0.99995656  =   0.99993613
 JV5957!UTM  18      -   0.99997957  x   0.99994743  =   0.99992700
 JV5957
 JV5957:                Primary Azimuth Mark                     Grid Az
 JV5957:SPC MD       -  BROWNS CORNER STANDPIPE                  315 59 56.1
 JV5957:UTM  18      -  BROWNS CORNER STANDPIPE                  317 15 36.0
 JV5957
 JV5957_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3202728111(NAD 83)
 JV5957
 JV5957|---------------------------------------------------------------------|
 JV5957| PID    Reference Object                     Distance      Geod. Az  |
 JV5957|                                                           dddmmss.s |
 JV5957| JV5959 BURTONSVILLE METH CH SPIRE          APPROX. 2.3 KM 0110605.8 |
 JV5957| CB1555 ELEVR SHAFT NE CORNER                              03338     |
 JV5957| JV5941 LAUREL PATUXENT FILT PLANT TK       APPROX. 3.8 KM 0692621.7 |
 JV5957| JV5967 LAUREL MINNICKS RAD MAST            APPROX. 2.4 KM 0720510.3 |
 JV5957| CB1850 STEWARD TOWERS ROOF SW CORNER                      24936     |
 JV5957| JV5944 COLESVILLE EPIS CHAPEL CHURCH       APPROX. 5.0 KM 2682153.4 |
 JV5957| CB1571 CASTLE ELEVR SHAFT NW CORNER          6.007 METERS 30928     |
 JV5957| JV5948 BROWNS CORNER STANDPIPE             APPROX. 5.4 KM 3160206.9 |
 JV5957|---------------------------------------------------------------------|
 JV5957
 JV5957                          SUPERSEDED SURVEY CONTROL
 JV5957
 JV5957  NAD 83(1986)-  39 05 09.48803(N)    076 56 31.57518(W) AD(       ) 1
 JV5957  NAD 27      -  39 05 09.09696(N)    076 56 32.66624(W) AD(       ) 1
 JV5957  NGVD 29 (07/19/86)  162.5    (m)          533.     (f) VERT ANG       
 JV5957
 JV5957.Superseded values are not recommended for survey control.
 JV5957
 JV5957.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5957.See file dsdata.pdf to determine how the superseded data were derived.
 JV5957
 JV5957_MARKER: DS = TRIANGULATION STATION DISK
 JV5957_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV5957_SP_SET: ROOF
 JV5957_STAMPING: CASTLE 1969
 JV5957_MARK LOGO: CGS
 JV5957_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV5957
 JV5957  HISTORY     - Date     Condition        Report By
 JV5957  HISTORY     - 1970     MONUMENTED       NGS
 JV5957
 JV5957                          STATION DESCRIPTION
 JV5957
 JV5957'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5957'THE STATION IS ABOUT 3-1/2 MILES NORTHWEST OF BELTSVILLE, 1-1/2
 JV5957'MILES SOUTH OF BURTONSVILLE, 1 MILE WEST OF THE MONTGOMERY-PRINCE
 JV5957'GEORGES COUNTY LINE AND ON THE ELEVATOR SHAFT ROOF OF THE
 JV5957'GREENCASTLE COUNTRY CLUB APARTMENTS LOCATED AT 14,000 CASTLE
 JV5957'BOULEVARD, SILVER SPRINGS.
 JV5957'
 JV5957'THE STATION MARK IS A STANDARD DISK, STAMPED CASTLE 1969, FIXED
 JV5957'TO THE ROOF WITH ROOFING COMPOUND UNDER A 6-INCH CYLINDRICAL COPPER
 JV5957'CAP, THAT PROJECTS 6 INCHES ABOVE THE SURFACE OF THE ROOF.  THERE
 JV5957'IS NO SUB-SURFACE MARK.
 JV5957'
 JV5957'THE CORNERS OF THE ELEVATOR SHAFT WERE USED AS REFERENCE POINTS.
 JV5957'
 JV5957'NO AZIMUTH MARK WAS ESTABLISHED FOR THIS STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6039 ***********************************************************************
 HV6039  DESIGNATION -  CASTLE MSFC 1909
 HV6039  PID         -  HV6039
 HV6039  STATE/COUNTY-  MD/DORCHESTER
 HV6039  COUNTRY     -  US
 HV6039  USGS QUAD   -  OXFORD (2016)
 HV6039
 HV6039                         *CURRENT SURVEY CONTROL
 HV6039  ______________________________________________________________________
 HV6039* NAD 83(1991) POSITION- 38 37 42.07994(N) 076 10 03.48298(W)   ADJUSTED
 HV6039* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6039  ______________________________________________________________________
 HV6039  GEOID HEIGHT    -        -34.752 (meters)                     GEOID18
 HV6039  LAPLACE CORR    -         -4.08  (seconds)                    DEFLEC18
 HV6039  HORZ ORDER      -  THIRD
 HV6039
 HV6039.The horizontal coordinates were established by classical geodetic methods
 HV6039.and adjusted by the National Geodetic Survey in January 1992.
 HV6039
 HV6039.The orthometric height was scaled from a topographic map.
 HV6039
 HV6039.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6039.GEOID18 height accuracy estimate available here.
 HV6039
 HV6039.Click photographs - Photos may exist for this station.
 HV6039
 HV6039.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6039
 HV6039. The following values were computed from the NAD 83(1991) position.
 HV6039
 HV6039;                    North         East     Units Scale Factor Converg.
 HV6039;SPC MD       -   107,081.631   472,476.570   MT  0.99995912   +0 31 20.7
 HV6039;SPC MD       -   351,316.98  1,550,116.88   sFT  0.99995912   +0 31 20.7
 HV6039;UTM  18      - 4,276,182.667   398,364.156   MT  0.99972721   -0 43 44.3
 HV6039
 HV6039!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6039!SPC MD       -   1.00000549  x   0.99995912  =   0.99996461
 HV6039!UTM  18      -   1.00000549  x   0.99972721  =   0.99973270
 HV6039
 HV6039:                Primary Azimuth Mark                     Grid Az
 HV6039:SPC MD       -  CHOPTANK RIVER OLD LIGHTHOUSE            333 48 00.5
 HV6039:UTM  18      -  CHOPTANK RIVER OLD LIGHTHOUSE            335 03 05.5
 HV6039
 HV6039_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9836476182(NAD 83)
 HV6039
 HV6039|---------------------------------------------------------------------|
 HV6039| PID    Reference Object                     Distance      Geod. Az  |
 HV6039|                                                           dddmmss.s |
 HV6039| HV6057 CHOPTANK RIVER OLD LIGHTHOUSE       APPROX. 3.4 KM 3341921.2 |
 HV6039|---------------------------------------------------------------------|
 HV6039
 HV6039                          SUPERSEDED SURVEY CONTROL
 HV6039
 HV6039  NAD 83(1986)-  38 37 42.07697(N)    076 10 03.49906(W) AD(       ) 3
 HV6039  NAD 27      -  38 37 41.64900(N)    076 10 04.71700(W) AD(       ) 3
 HV6039  USSD        -  38 37 42.04100(N)    076 10 04.52300(W) AD(       ) 3
 HV6039
 HV6039.Superseded values are not recommended for survey control.
 HV6039
 HV6039.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6039.See file dsdata.pdf to determine how the superseded data were derived.
 HV6039
 HV6039_MARKER: Z = SEE DESCRIPTION
 HV6039_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6039_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6039+STABILITY: SURFACE MOTION
 HV6039
 HV6039  HISTORY     - Date     Condition        Report By
 HV6039  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6039  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6039
 HV6039                          STATION DESCRIPTION
 HV6039
 HV6039'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6039'ON THE SOUTHERN SHORE OF CHOPTANK RIVER, ON CASTLEHAVEN POINT, AT
 HV6039'N SIDE OF CASTLEHAVEN CREEK, ABOUT 2 MILES SSW OF CHOPTANK RIVER
 HV6039'LIGHT.  STATION IS ON A NARROW NECK OF LAND, ABOUT 25 YARDS SSW OF
 HV6039'SHORE OF CHOPTANK RIVER, 20 YARDS N OF SHORE OF COVE, 22 YARDS W
 HV6039'OF BATHHOUSE, AND 100 YARDS ENE OF THREE POPLAR TREES.  STATION IS
 HV6039'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV6039'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6039'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV6039'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS
 HV6039'CENTER OF 2-INCH TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE
 HV6039'BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV6039'REFERENCE ARE AS FOLLOWS--RIGHT PEAK OF BOATHOUSE AT CASTLEHAVEN
 HV6039'WHARF, 1/8 MILE, S 9 DEG 23 MIN W.  RIGHT CORNER OF CHIMNEY OF
 HV6039'BRICK HOUSE, 1/8 MILE, S 49 DEG 37 MIN W.  RIGHT CORNER OF HOUSE
 HV6039'NEAR BACHELOR POINT, 3 MILES, N 6 DEG 14 MIN W. LEFT CORNER OF
 HV6039'BATHHOUSE, 21.42 METERS (70.3 FEET), N 69 DEG 50 MIN E.  NEAR
 HV6039'CORNER OF BATHHOUSE, 19.83 METERS (65.1 FEET), N 83 DEG 51 MIN E.
 HV6039'NEAR PEAK OF HOUSE, 3 MILES, S 82 DEG 45 MIN E.
 HV6039
 HV6039                          STATION RECOVERY (1940)
 HV6039
 HV6039'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6039'STATION VISITED BUT NOT RECOVERED.  SHORE HAS MOVED BACK
 HV6039'CONSIDERABLY AND MONUMENT HAS WASHED OUT.  BATHHOUSE MENTIONED IN
 HV6039'DESCRIPTION IS STILL STANDING AND GIVES GOOD DEFINITION OF THE
 HV6039'LOCATION.  THE SPOT WAS DUG UP WITH NO INDICATION OF SUB-SURFACE MARK.
 HV6039'
 HV6039'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6345 ***********************************************************************
 JV6345  DESIGNATION -  CASTLETON
 JV6345  PID         -  JV6345
 JV6345  STATE/COUNTY-  MD/HARFORD
 JV6345  COUNTRY     -  US
 JV6345  USGS QUAD   -  CONOWINGO DAM (2016)
 JV6345
 JV6345                         *CURRENT SURVEY CONTROL
 JV6345  ______________________________________________________________________
 JV6345* NAD 83(2011) POSITION- 39 38 52.54588(N) 076 12 25.66179(W)   ADJUSTED
 JV6345* NAD 83(2011) ELLIP HT-    60.399 (meters)        (06/27/12)   ADJUSTED
 JV6345* NAD 83(2011) EPOCH   -  2010.00
 JV6345* NAVD 88 ORTHO HEIGHT -    93.252 (meters)      305.94  (feet) ADJUSTED
 JV6345  ______________________________________________________________________
 JV6345  GEOID HEIGHT    -        -32.859 (meters)                     GEOID18
 JV6345  NAD 83(2011) X  -  1,172,463.047 (meters)                     COMP
 JV6345  NAD 83(2011) Y  - -4,775,979.435 (meters)                     COMP
 JV6345  NAD 83(2011) Z  -  4,048,001.780 (meters)                     COMP
 JV6345  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC18
 JV6345  DYNAMIC HEIGHT  -         93.207 (meters)      305.80  (feet) COMP
 JV6345  MODELED GRAVITY -    980,142.8   (mgal)                       NAVD 88
 JV6345
 JV6345  VERT ORDER      -  FIRST     CLASS II
 JV6345
 JV6345  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6345  Standards:
 JV6345         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6345            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6345  -------------------------------------------------------------------
 JV6345  NETWORK    1.03   2.33           0.44   0.39   1.19      0.32234561
 JV6345  -------------------------------------------------------------------
 JV6345  Click here for local accuracies and other accuracy information.
 JV6345
 JV6345.The horizontal coordinates were established by GPS observations
 JV6345.and adjusted by the National Geodetic Survey in June 2012.
 JV6345
 JV6345.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6345.been affixed to the stable North American tectonic plate. See 
 JV6345.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6345
 JV6345.The horizontal coordinates are valid at the epoch date displayed above
 JV6345.which is a decimal equivalence of Year/Month/Day.
 JV6345
 JV6345.The orthometric height was determined by differential leveling and
 JV6345.adjusted by the NATIONAL GEODETIC SURVEY
 JV6345.in June 1991.
 JV6345
 JV6345.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6345.GEOID18 height accuracy estimate available here.
 JV6345
 JV6345.Click photographs - Photos may exist for this station.
 JV6345
 JV6345.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6345
 JV6345.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6345
 JV6345.The ellipsoidal height was determined by GPS observations
 JV6345.and is referenced to NAD 83.
 JV6345
 JV6345.The dynamic height is computed by dividing the NAVD 88
 JV6345.geopotential number by the normal gravity value computed on the
 JV6345.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6345.degrees latitude (g = 980.6199 gals.).
 JV6345
 JV6345.The modeled gravity was interpolated from observed gravity values.
 JV6345
 JV6345. The following values were computed from the NAD 83(2011) position.
 JV6345
 JV6345;                    North         East     Units Scale Factor Converg.
 JV6345;SPC MD       -   220,234.929   468,054.723   MT  1.00004062   +0 29 51.5
 JV6345;SPC MD       -   722,554.10  1,535,609.54   sFT  1.00004062   +0 29 51.5
 JV6345;UTM  18      - 4,389,378.214   396,431.218   MT  0.99973206   -0 46 13.1
 JV6345
 JV6345!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6345!SPC MD       -   0.99999052  x   1.00004062  =   1.00003114
 JV6345!UTM  18      -   0.99999052  x   0.99973206  =   0.99972259
 JV6345
 JV6345:                Primary Azimuth Mark                     Grid Az
 JV6345:SPC MD       -  CASTLETON AZ MK                          306 07 48.1
 JV6345:UTM  18      -  CASTLETON AZ MK                          307 23 52.7
 JV6345
 JV6345_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9643189378(NAD 83)
 JV6345
 JV6345|---------------------------------------------------------------------|
 JV6345| PID    Reference Object                     Distance      Geod. Az  |
 JV6345|                                                           dddmmss.s |
 JV6345| JV6346 CASTLETON AZ MK                     APPROX. 0.6 KM 3063739.6 |
 JV6345|---------------------------------------------------------------------|
 JV6345
 JV6345                          SUPERSEDED SURVEY CONTROL
 JV6345
 JV6345  NAD 83(2007)-  39 38 52.54604(N)    076 12 25.66254(W) AD(2002.00) 0
 JV6345  ELLIP H (02/10/07)   60.422  (m)                       GP(2002.00)    
 JV6345  ELLIP H (09/18/02)   60.431  (m)                       GP(       ) 4 2
 JV6345  NAD 83(1991)-  39 38 52.54569(N)    076 12 25.66256(W) AD(       ) 1
 JV6345  ELLIP H (01/27/92)   60.421  (m)                       GP(       ) 4 1
 JV6345  NAD 83(1986)-  39 38 52.53888(N)    076 12 25.66879(W) AD(       ) 1
 JV6345  NGVD 29              93.51   (m)          306.8    (f) LEVELING    3  
 JV6345
 JV6345.Superseded values are not recommended for survey control.
 JV6345
 JV6345.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6345.See file dsdata.pdf to determine how the superseded data were derived.
 JV6345
 JV6345_MARKER: DD = SURVEY DISK
 JV6345_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6345_STAMPING: 90 CASTLETON 1989
 JV6345_MARK LOGO: MD-025
 JV6345_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6345_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6345+STABILITY: SURFACE MOTION
 JV6345_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6345+SATELLITE: SATELLITE OBSERVATIONS - June 17, 2005
 JV6345
 JV6345  HISTORY     - Date     Condition        Report By
 JV6345  HISTORY     - 1989     MONUMENTED       RDA
 JV6345  HISTORY     - 19980711 GOOD             USPSQD
 JV6345  HISTORY     - 19990514 GOOD             GEOMET
 JV6345  HISTORY     - 20050617 GOOD             GEOCAC
 JV6345
 JV6345                          STATION DESCRIPTION
 JV6345
 JV6345'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6345'THE STATION IS LOCATED IN NORTHESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6345'0.5 MILE NORTH OF THE VILLAGE OF DARLINGTON.  THE STATION IS LOCATED
 JV6345'IN THE ISLAND OF THE INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE
 JV6345'HIGHWAY 161.  THE STATION IS A STANDARD HARFORD COUNTY STATION DISC
 JV6345'SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 90 CASTLETON 1989.
 JV6345'THE STATION IS 26.6 FEET SOUTHWEST OF THE CENTERLINE OF HIGHWAY 1,
 JV6345'21.0 FEET NORTHEAST OF THE CENTERLINE OF HIGHWAY 161, AND 29.6 FEET
 JV6345'WEST OF THE NORTHWEST END OF A HEAD WALL OF A 36 INCH CULVERT.
 JV6345
 JV6345                          STATION RECOVERY (1998)
 JV6345
 JV6345'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6345'RECOVERED IN GOOD CONDITION.
 JV6345
 JV6345                          STATION RECOVERY (1999)
 JV6345
 JV6345'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (CN)
 JV6345'RECOVERED AS DESCRIBED.
 JV6345
 JV6345                          STATION RECOVERY (2005)
 JV6345
 JV6345'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 JV6345'THE INTERSECTION OF US HIGHWAY 1 AND STATE HIGHWAY 161 HAS BEEN
 JV6345'REDESIGNED AND NO LONGER FORMS AN ISLAND.  THE STATION IS LOCATED WEST
 JV6345'OF THE NEW INTERSECTION OF US HIGHWAY 1 AND STATE HIGHWAY 161, AND
 JV6345'FLUSH WITH THE SURFACE IN A GRASSY AREA IMMEDIATELY SOUTH OF THE
 JV6345'US HIGHWAY AND IMMEDIATELY NORTH OF A SHELL SERVICE STATION.  THE
 JV6345'STATION IS 50.5 FEET NORTH-NORTHWEST OF UTILITY POLE NUMBER 9, 29.83
 JV6345'FEET WEST OF THE WEST END OF THE HEADWALL FOR A CULVERY THAT RUNS
 JV6345'UNDER US HIGHWAY 1, 3.25 FEET SOUTH OF THE SOUTH EDGE OF PAVEMENT FOR
 JV6345'US HIGHWAY 1, AND 0.75 FEET EAST OF THE EIGHTH WOODEN POST EAST OF THE
 JV6345'WEST END OF A GUARDRAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6346 ***********************************************************************
 JV6346  CBN         -  This is a Cooperative Base Network Control Station.
 JV6346  DESIGNATION -  CASTLETON AZ MK
 JV6346  PID         -  JV6346
 JV6346  STATE/COUNTY-  MD/HARFORD
 JV6346  COUNTRY     -  US
 JV6346  USGS QUAD   -  CONOWINGO DAM (2016)
 JV6346
 JV6346                         *CURRENT SURVEY CONTROL
 JV6346  ______________________________________________________________________
 JV6346* NAD 83(2011) POSITION- 39 39 03.25750(N) 076 12 44.30189(W)   ADJUSTED
 JV6346* NAD 83(2011) ELLIP HT-    70.220 (meters)        (06/27/12)   ADJUSTED
 JV6346* NAD 83(2011) EPOCH   -  2010.00
 JV6346* NAVD 88 ORTHO HEIGHT -   103.055 (meters)      338.11  (feet) ADJUSTED
 JV6346  ______________________________________________________________________
 JV6346  GEOID HEIGHT    -        -32.853 (meters)                     GEOID18
 JV6346  NAD 83(2011) X  -  1,171,983.001 (meters)                     COMP
 JV6346  NAD 83(2011) Y  - -4,775,887.989 (meters)                     COMP
 JV6346  NAD 83(2011) Z  -  4,048,262.413 (meters)                     COMP
 JV6346  LAPLACE CORR    -         -2.44  (seconds)                    DEFLEC18
 JV6346  DYNAMIC HEIGHT  -        103.005 (meters)      337.94  (feet) COMP
 JV6346  MODELED GRAVITY -    980,142.0   (mgal)                       NAVD 88
 JV6346
 JV6346  VERT ORDER      -  FIRST     CLASS II
 JV6346
 JV6346  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6346  Standards:
 JV6346         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6346            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6346  -------------------------------------------------------------------
 JV6346  NETWORK    0.73   1.35           0.32   0.27   0.69     -0.08417296
 JV6346  -------------------------------------------------------------------
 JV6346  Click here for local accuracies and other accuracy information.
 JV6346
 JV6346.The horizontal coordinates were established by GPS observations
 JV6346.and adjusted by the National Geodetic Survey in June 2012.
 JV6346
 JV6346.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6346.been affixed to the stable North American tectonic plate. See 
 JV6346.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6346
 JV6346.The horizontal coordinates are valid at the epoch date displayed above
 JV6346.which is a decimal equivalence of Year/Month/Day.
 JV6346
 JV6346.The orthometric height was determined by differential leveling and
 JV6346.adjusted by the NATIONAL GEODETIC SURVEY
 JV6346.in June 1991.
 JV6346
 JV6346.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6346.GEOID18 height accuracy estimate available here.
 JV6346
 JV6346.Click photographs - Photos may exist for this station.
 JV6346
 JV6346.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6346
 JV6346.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6346
 JV6346.The ellipsoidal height was determined by GPS observations
 JV6346.and is referenced to NAD 83.
 JV6346
 JV6346.The dynamic height is computed by dividing the NAVD 88
 JV6346.geopotential number by the normal gravity value computed on the
 JV6346.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6346.degrees latitude (g = 980.6199 gals.).
 JV6346
 JV6346.The modeled gravity was interpolated from observed gravity values.
 JV6346
 JV6346. The following values were computed from the NAD 83(2011) position.
 JV6346
 JV6346;                    North         East     Units Scale Factor Converg.
 JV6346;SPC MD       -   220,561.441   467,607.456   MT  1.00004133   +0 29 39.8
 JV6346;SPC MD       -   723,625.33  1,534,142.13   sFT  1.00004133   +0 29 39.8
 JV6346;UTM  18      - 4,389,714.439   395,991.421   MT  0.99973318   -0 46 25.1
 JV6346
 JV6346!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6346!SPC MD       -   0.99998898  x   1.00004133  =   1.00003031
 JV6346!UTM  18      -   0.99998898  x   0.99973318  =   0.99972217
 JV6346
 JV6346:                Primary Azimuth Mark                     Grid Az
 JV6346:SPC MD       -  CASTLETON                                126 07 47.9
 JV6346:UTM  18      -  CASTLETON                                127 23 52.8
 JV6346
 JV6346_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9599189714(NAD 83)
 JV6346
 JV6346|---------------------------------------------------------------------|
 JV6346| PID    Reference Object                     Distance      Geod. Az  |
 JV6346|                                                           dddmmss.s |
 JV6346| JV6345 CASTLETON                           APPROX. 0.6 KM 1263727.7 |
 JV6346|---------------------------------------------------------------------|
 JV6346
 JV6346                          SUPERSEDED SURVEY CONTROL
 JV6346
 JV6346  NAD 83(2007)-  39 39 03.25775(N)    076 12 44.30275(W) AD(2002.00) 0
 JV6346  ELLIP H (02/10/07)   70.240  (m)                       GP(2002.00)    
 JV6346  NAD 83(1991)-  39 39 03.25777(N)    076 12 44.30285(W) AD(       ) A
 JV6346  ELLIP H (02/12/02)   70.245  (m)                       GP(       ) 4 1
 JV6346  NAD 83(1991)-  39 39 03.25728(N)    076 12 44.30306(W) AD(       ) 1
 JV6346  ELLIP H (01/27/92)   70.225  (m)                       GP(       ) 4 1
 JV6346  NAD 83(1986)-  39 39 03.25047(N)    076 12 44.30928(W) AD(       ) 1
 JV6346  NAVD 88             103.06   (m)          338.1    (f) LEVELING    3  
 JV6346  NGVD 29             103.31   (m)          338.9    (f) LEVELING    3  
 JV6346
 JV6346.Superseded values are not recommended for survey control.
 JV6346
 JV6346.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6346.See file dsdata.pdf to determine how the superseded data were derived.
 JV6346
 JV6346_MARKER: DZ = AZIMUTH MARK DISK
 JV6346_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6346_STAMPING: 90 CASTLETON 1989
 JV6346_MARK LOGO: MD-025
 JV6346_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6346_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6346+STABILITY: SURFACE MOTION
 JV6346_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6346+SATELLITE: SATELLITE OBSERVATIONS - June 17, 2005
 JV6346
 JV6346  HISTORY     - Date     Condition        Report By
 JV6346  HISTORY     - 1989     MONUMENTED       RDA
 JV6346  HISTORY     - 19900105 GOOD
 JV6346  HISTORY     - 20000515 GOOD             MDSHA
 JV6346  HISTORY     - 20010304 GOOD             USPSQD
 JV6346  HISTORY     - 20050617 GOOD             GEOCAC
 JV6346
 JV6346                          STATION DESCRIPTION
 JV6346
 JV6346'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6346'THE STATION IS LOCATED IN NORTHESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6346'0.5 MILE NORTH OF THE VILLAGE OF DARLINGTON.  THE STATION IS LOCATED
 JV6346'IN THE ISLAND OF THE INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE
 JV6346'HIGHWAY 161.  TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED WEST
 JV6346'ALONG HIGHWAY 1 0.33 MILES TO THE MARK ON THE RIGHT.  THE MARK IS A
 JV6346'STANDARD HARFORD COUNTY AZIMUTH DISC SET IN CONCRETE ABOUT 1 INCH
 JV6346'BELOW GROUND STAMPED 90 CASTLETON 1989.  THE MARK IS 34.0 FEET
 JV6346'NORTHEAST OF THE CENTERLINE OF HIGHWAY 1, 54.0 FEET NORTHWEST OF CEL
 JV6346'AND P COMPANY POLE NUMBER 1743, AND 138.5 FEET SOUTHEAST OF A 20 INCH
 JV6346'SPRUCE TREE.
 JV6346
 JV6346                          STATION RECOVERY (1990)
 JV6346
 JV6346'RECOVERED 1990
 JV6346'RECOVERED IN GOOD CONDITION.
 JV6346
 JV6346                          STATION RECOVERY (2000)
 JV6346
 JV6346'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6346'THE STATION IS LOCATED ABOUT 1.0 MILES (1.6 KM) NORTHWEST OF
 JV6346'DARLINGTON, AND 6.9 MILES (11.1 KM) NORTH OF CHURCHVILLE.  TO REACH
 JV6346'THE STATION FROM THE SOUTH END OF THE CONOWINGO DAM, GO SOUTHWEST
 JV6346'ALONG U.S.HIGHWAY 1 FOR 1.55 MILES (2.49 KM) TO STATE HIGHWAY 623
 JV6346'(CASTLETON ROAD) .  CONTINUE WEST ALONG U.S.HIGHWAY 1 FOR 0.5 MILES
 JV6346'(0.8 KM) TO THE STATION ON THE RIGHT.  THE STATION IS A HARFORD COUNTY
 JV6346'AZIMUTH MARK DISK SET IN THE TOP OF A 8 INCH ROUND CONCRETE MONUMENT
 JV6346'WHICH IS ABOUT 1 INCH BELOW THE SURFACE OF THE GROUND.  IT IS 34.0
 JV6346'FEET (10.4 M) NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 54.0 FEET
 JV6346'(16.5 M) NORTHWEST OF CEL AND P POLE NUMBER 1743, 138.5 FEET (42.2 M)
 JV6346'SOUTHEAST OF A 20 INCH SPRUCE TREE, 0.8 FEET (24.4 CM) SOUTHWEST OF A
 JV6346'CARSONITE WITNESS POST, AT THE TOP OF A SMALL CUT BANK AND ABOUT 3
 JV6346'FEET (0.9 M) HIGHER THAN THE ROAD.
 JV6346
 JV6346                          STATION RECOVERY (2001)
 JV6346
 JV6346'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV6346'RECOVERED IN GOOD CONDITION.
 JV6346
 JV6346                          STATION RECOVERY (2005)
 JV6346
 JV6346'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 JV6346'C AND P POLE NUMBER 1743 IS NOW NUMBERED 1743 29919 40114.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0851 ***********************************************************************
 JV0851  DESIGNATION -  CAT
 JV0851  PID         -  JV0851
 JV0851  STATE/COUNTY-  MD/BALTIMORE
 JV0851  COUNTRY     -  US
 JV0851  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0851
 JV0851                         *CURRENT SURVEY CONTROL
 JV0851  ______________________________________________________________________
 JV0851* NAD 83(1991) POSITION- 39 17 06.27285(N) 076 44 19.77356(W)   ADJUSTED
 JV0851* NAVD 88 ORTHO HEIGHT -   157.267 (meters)      515.97  (feet) ADJUSTED
 JV0851  ______________________________________________________________________
 JV0851  GEOID HEIGHT    -        -32.325 (meters)                     GEOID18
 JV0851  LAPLACE CORR    -         -5.15  (seconds)                    DEFLEC18
 JV0851  DYNAMIC HEIGHT  -        157.185 (meters)      515.70  (feet) COMP
 JV0851  MODELED GRAVITY -    980,097.8   (mgal)                       NAVD 88
 JV0851
 JV0851  HORZ ORDER      -  SECOND
 JV0851  VERT ORDER      -  SECOND    CLASS 0
 JV0851
 JV0851.The horizontal coordinates were established by classical geodetic methods
 JV0851.and adjusted by the National Geodetic Survey in January 1992.
 JV0851
 JV0851.The orthometric height was determined by differential leveling and
 JV0851.adjusted by the NATIONAL GEODETIC SURVEY
 JV0851.in June 1991.
 JV0851
 JV0851.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0851.GEOID18 height accuracy estimate available here.
 JV0851
 JV0851.Click photographs - Photos may exist for this station.
 JV0851
 JV0851.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0851
 JV0851.The dynamic height is computed by dividing the NAVD 88
 JV0851.geopotential number by the normal gravity value computed on the
 JV0851.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0851.degrees latitude (g = 980.6199 gals.).
 JV0851
 JV0851.The modeled gravity was interpolated from observed gravity values.
 JV0851
 JV0851. The following values were computed from the NAD 83(1991) position.
 JV0851
 JV0851;                    North         East     Units Scale Factor Converg.
 JV0851;SPC MD       -   179,685.831   422,532.911   MT  0.99997531   +0 09 50.1
 JV0851;SPC MD       -   589,519.26  1,386,260.06   sFT  0.99997531   +0 09 50.1
 JV0851;UTM  18      - 4,349,853.640   350,033.455   MT  0.99987692   -1 06 04.3
 JV0851
 JV0851!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0851!SPC MD       -   0.99998040  x   0.99997531  =   0.99995571
 JV0851!UTM  18      -   0.99998040  x   0.99987692  =   0.99985732
 JV0851
 JV0851:                Primary Azimuth Mark                     Grid Az
 JV0851:SPC MD       -  CATON AZ MK RESET                        281 20 22.2
 JV0851:UTM  18      -  CATON AZ MK RESET                        282 36 16.6
 JV0851
 JV0851_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5003349853(NAD 83)
 JV0851
 JV0851|---------------------------------------------------------------------|
 JV0851| PID    Reference Object                     Distance      Geod. Az  |
 JV0851|                                                           dddmmss.s |
 JV0851| CB1048 CAT RM 1                             22.860 METERS 00759     |
 JV0851| JV5619 CATONSVILLE BALTIMORE MUN TANK      495.674 METERS 0711902.4 |
 JV0851| CB1049 CAT RM 2                             26.624 METERS 07613     |
 JV0851| CB1050 CAT RM 3                             21.184 METERS 13709     |
 JV0851| JV5621 CATONSVILLE SPRING GRO HOSP TK      APPROX. 2.5 KM 1535922.8 |
 JV0851| JV5622 CATONSVILLE SPR GROVE HOSP STK      APPROX. 2.6 KM 1542527.4 |
 JV0851| CB1046 CATON AZ MK                                        2792858.6 |
 JV0851| CB1047 CATON AZ MK RESET                                  2813012.3 |
 JV0851|---------------------------------------------------------------------|
 JV0851
 JV0851                          SUPERSEDED SURVEY CONTROL
 JV0851
 JV0851  NAD 83(1986)-  39 17 06.27005(N)    076 44 19.78214(W) AD(       ) 2
 JV0851  NAD 27      -  39 17 05.88750(N)    076 44 20.88190(W) AD(       ) 2
 JV0851  NGVD 29             157.48   (m)          516.7    (f) LEVELING    3  
 JV0851  NGVD 29 (11/26/84)  157.484  (m)          516.68   (f) ADJUSTED    2 0
 JV0851
 JV0851.Superseded values are not recommended for survey control.
 JV0851
 JV0851.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0851.See file dsdata.pdf to determine how the superseded data were derived.
 JV0851
 JV0851_MARKER: DS = TRIANGULATION STATION DISK
 JV0851_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0851_STAMPING: CAT 1957
 JV0851_MARK LOGO: CGS
 JV0851_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0851+STABILITY: SURFACE MOTION
 JV0851
 JV0851  HISTORY     - Date     Condition        Report By
 JV0851  HISTORY     - 1957     MONUMENTED       CGS
 JV0851  HISTORY     - 1958     GOOD             CGS
 JV0851  HISTORY     - 1960     GOOD             CGS
 JV0851  HISTORY     - 1973     GOOD             NGS
 JV0851  HISTORY     - 1977     GOOD             NGS
 JV0851  HISTORY     - 1977     GOOD             NGS
 JV0851  HISTORY     - 20030921 MARK NOT FOUND   USPSQD
 JV0851
 JV0851                          STATION DESCRIPTION
 JV0851
 JV0851'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV0851'THE STATION IS LOCATED ABOUT 6-1/2 MILES WEST OF THE CENTER OF
 JV0851'BALTIMORE, ABOUT 1 MILE NORTH OF THE CENTER OF CATONSVILLE AND ON
 JV0851'THE SOUTH SIDE OF U.S. HIGHWAY 40, AT THE SITE OF W.I.T.H. RADIO
 JV0851'TOWER.  IT IS APPROXIMATELY 138 FEET SOUTHEAST OF THE SOUTHEAST
 JV0851'LEG OF THE RADIO TOWER, 45 FEET NORTHEAST OF UTILITY POLE, 40
 JV0851'FEET NORTHWEST OF OLD BLACK TOP ROAD AND 4 FEET SOUTH-SOUTHWEST
 JV0851'OF WITNESS POST.  THE MARK PROJECTS ABOUT 4 INCHES AND THE DISK
 JV0851'IS STAMPED CAT 1957.
 JV0851'
 JV0851'R.M. NO. 1 IS SET FLUSH WITH THE SURFACE OF THE GROUND AND THE
 JV0851'DISK IS STAMPED CAT NO 1 1957.
 JV0851'
 JV0851'R.M. NO. 2 IS 29 FEET NORTHWEST OF OLD BLACK TOP ROAD.  THE MARK
 JV0851'IS SET FLUSH WITH THE SURFACE OF THE GROUND AND THE DISK IS
 JV0851'STAMPED CAT NO 2 1957.
 JV0851'
 JV0851'THE AZIMUTH MARK IS 39 FEET NORTH OF THE APPROXIMATE CENTER OF
 JV0851'U.S. HIGHWAY 40, 32 FEET WEST OF LINCOLN AVENUE, 18 FEET WEST OF
 JV0851'POWER POLE AND 1 FOOT WEST OF WITNESS POST.  THE MARK PROJECTS
 JV0851'ABOUT 2 INCHES AND THE DISK IS STAMPED CATON 1942.
 JV0851'
 JV0851'TO REACH THE STATION FROM THE INTERSECTION OF FREDRICK ROAD AND
 JV0851'ROLLING ROAD IN THE WEST EDGE OF CATONSVILLE.  GO NORTH ON ROLLING
 JV0851'ROAD FOR 1.1 MILES TO U.S. HIGHWAY 40, TURN RIGHT AND GO EAST ON
 JV0851'U.S. HIGHWAY 40 FOR 0.6 MILE TO THE AZIMUTH MARK ON LEFT AS
 JV0851'DESCRIBED.  CONTINUE EAST FOR 0.1 MILE AND TURN RIGHT JUST BEFORE
 JV0851'REACHING THE RADIO TOWER, GO SOUTHERLY FOR 0.1 MILE THEN TURN
 JV0851'LEFT ONTO OLD BLACK TOP ROAD AND GO EAST FOR 0.05 MILE TO THE
 JV0851'STATION ON LEFT AS DESCRIBED.
 JV0851'
 JV0851'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV0851
 JV0851                          STATION RECOVERY (1958)
 JV0851
 JV0851'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0851'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS FOUND IN GOOD
 JV0851'CONDITION.  THE ORIGINAL DESCRIPTION IS ADEQUATE EXCEPT A REQUEST
 JV0851'WAS MADE TO MOVE THE AZIMUTH MARK TO MAKE WAY FOR THE CONSTRUCTION
 JV0851'OF A NEW SERVICE STATION.
 JV0851'
 JV0851'AZIMUTH MARK IS NOW 39-1/2 FEET EAST OF APPROXIMATE CENTERLINE
 JV0851'OF LINCOLN AVENUE, 48-1/2 FEET NORTH OF APPROXIMATE CENTERLINE
 JV0851'OF WEST BOUND TRAFFIC LANE OF U.S. HIGHWAY NO. 40, 31 FEET
 JV0851'SOUTHWEST OF A LONE CEDAR TREE AND 1-1/2 FEET SOUTH OF A WITNESS
 JV0851'POST.  THE MARK IS A STANDARD AZIMUTH MARK DISK SET IN A 12X12
 JV0851'INCH CONCRETE MONUMENT, FLUSH WITH THE GROUND AND THE DISK IS
 JV0851'STAMPED CATON 1942 RESET 1958.  NOTE--16A.
 JV0851'
 JV0851'TO REACH FROM STATION CAT GO WESTERLY ON U.S. HIGHWAY NO. 40 FOR
 JV0851'0.15 MILE TO LINCOLN AVENUE ON RIGHT AND AZIMUTH MARK ON RIGHT
 JV0851'AS DESCRIBED.
 JV0851
 JV0851                          STATION RECOVERY (1960)
 JV0851
 JV0851'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960
 JV0851'1.8 MI NW FROM CATONSVILLE.
 JV0851'0.6 MILE EAST ALONG FREDERICK ROAD FROM THE POST OFFICE AT
 JV0851'CATONSVILLE, THENCE ABOUT 1.15 MILES NORTHWEST ALONG BALTIMORE
 JV0851'BELTWAY (INTERSTATE HIGHWAY 695), 59 YARDS SOUTHEAST OF THE
 JV0851'SOUTHEAST STEEL LEG OF W I T H RADIO TOWER, ABOUT 250 FEET
 JV0851'SOUTHWEST OF THE SOUTHWEST END OF THE OVERPASS OF BALTIMORE
 JV0851'BELTWAY OVER U.S. HIGHWAY 40, ABOUT 300 FEET SOUTH OF HIGHWAY 40,
 JV0851'24 FEET EAST OF A 12-INCH OAK TREE, 5 FEET SOUTHWEST OF A WHITE
 JV0851'WOODEN WITNESS POST, AND SET IN TOP OF A CONCRETE POST PROJECTING
 JV0851'3 INCHES.
 JV0851
 JV0851                          STATION RECOVERY (1973)
 JV0851
 JV0851'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV0851'THE STATION MARK, REFERENCE MARK 2 AND THE AZIMUTH MARK WERE
 JV0851'RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK 1 WAS NOT
 JV0851'FOUND AND IT IS BELIEVED DESTROYED.  A NEW REFERENCE MARK 3 WAS
 JV0851'ESTABLISHED AT THIS DATE.  A SHORTER DISTANCE OF 0.05 FOOT OR
 JV0851'0.016 METER WAS NOTED TO REFERENCE MARK 2.  THE DIRECTION BETWEEN
 JV0851'THE AZIMUTH MARK AND REFERENCE MARK 2 WERE WITHIN CLOSE
 JV0851'AGREEMENT WITH THE 1957 AND 1958 OBSERVATIONS.  DUE TO SNOW
 JV0851'BEING ON THE TOP OF THE CATONSVILLE, BALTIMORE MUNICIPAL
 JV0851'WATER TANK 1958, THE EXACT ANGLE TO THE OBJECT COULD NOT BE
 JV0851'VERIFIED AT THIS DATE.  THE HILL IS ALSO OCCUPIED BY A
 JV0851'LARGE RADIO TOWER.
 JV0851'
 JV0851'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV0851'
 JV0851'THE STATION IS LOCATED ABOUT 6-1/2 AIRLINE MILES WEST OF THE
 JV0851'CENTER OF BALTIMORE AND 1 MILE NORTH OF CATONSVILLE.  IT IS IN
 JV0851'THE SOUTHWEST ANGLE OF THE INTERSECTION OF INTERSTATE HIGHWAY 695
 JV0851'AND U.S. HIGHWAY 40.  IT IS ON A SMALL HILL WHICH IS IN THE CENTER
 JV0851'OF THE ISLAND WHICH MAKES UP THE ENTRANCE TO INTERSTATE HIGHWAY
 JV0851'695 SOUTH BOUND.
 JV0851'
 JV0851'THE LOCATION OF THIS STATION IS ADEQUATE TO FIND IT BY.
 JV0851'
 JV0851'THE STATION MARK IS A STANDARD DISK STAMPED CAT 1957, SET IN THE
 JV0851'TOP OF A 12-INCH SQUARE CONCRETE POST WHICH IS FLUSH WITH THE
 JV0851'SURFACE.  IT IS 138 FEET SOUTHEAST OF THE MOST SOUTHEAST LEG OF
 JV0851'THE RADIO TOWER, 65 FEET EAST OF THE EAST EDGE OF THE ENTRANCE
 JV0851'RAMP FOR INTERSTATE HIGHWAY 695 AND ABOUT 250 FEET SOUTHWEST OF
 JV0851'THE INTERSECTION OF INTERSTATE HIGHWAY 695 AND U.S. HIGHWAY
 JV0851'40.
 JV0851'
 JV0851'REFERENCE MARK 2 IS A STANDARD DISK STAMPED CAT NO 2 1957, SET
 JV0851'IN THE TOP OF A 12-INCH SQUARE POST WHICH IS FLUSH WITH THE
 JV0851'SURFACE.  IT IS 50 FEET EAST OF THE ENTRANCE RAMP AND ABOUT 2
 JV0851'FEET LOWER THAN THE STATION.
 JV0851'
 JV0851'REFERENCE MARK 3 IS A STANDARD DISK STAMPED CAT 1957 NO 3 1973,
 JV0851'CEMENTED IN A DRILL HOLE IN A STEEL LIGHTPOLE FOUNDATION.  IT IS
 JV0851'IN THE NORTHWEST PART OF THE CONCRETE FOUNDATION, ABOUT 6 FEET
 JV0851'LOWER THAN THE STATION.  IT IS 3 FEET EAST OF THE EAST EDGE OF
 JV0851'THE ENTRANCE RAMP AND 0.5 FOOT NORTHWEST OF THE STEEL
 JV0851'LIGHTPOLE.
 JV0851'
 JV0851'THE AZIMUTH MARK IS A STANDARD DISK STAMPED CATON 1942 RESET
 JV0851'1958, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH
 JV0851'IS FLUSH WITH THE SURFACE.  IT IS LOCATED 0.15 MILE WEST OF THE
 JV0851'INTERSECTION OF INTERSTATE HIGHWAY 695 AND U.S. HIGHWAY 40.  IT
 JV0851'IS IN THE NORTHEAST ANGLE OF THE INTERSECTION OF U.S. HIGHWAY 40
 JV0851'AND LINCOLN WAY.  IT IS 20 FEET NORTH OF THE NORTH EDGE OF
 JV0851'U.S. HIGHWAY 40, 3.8 FEET NORTH OF AN EAST-WEST WOVEN WIRE
 JV0851'FENCE AND 8 FEET NORTHEAST OF THE SOUTHWEST CORNER OF THE
 JV0851'FENCE.
 JV0851'
 JV0851'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV0851'1 MILE NORTH OF CATONSVILLE.
 JV0851
 JV0851                          STATION RECOVERY (1977)
 JV0851
 JV0851'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (DRM)
 JV0851'RECOVERED AS DESCRIBED.
 JV0851'
 JV0851'NEAREST TOWN--CATONSVILLE.
 JV0851'
 JV0851'DISTANCE AND DIRECTION FROM NEAREST TOWN--1.75 MILES NW.
 JV0851
 JV0851                          STATION RECOVERY (1977)
 JV0851
 JV0851'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 JV0851'RECOVERED IN GOOD CONDITION.
 JV0851
 JV0851                          STATION RECOVERY (2003)
 JV0851
 JV0851'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0851'THE STATION, REFERENCE MARKS 2 AND 3 WERE NOT FOUND.  NOTE--THE
 JV0851'STATION IS WITHIN A SECURITY FENCE.  IT APPEARS AS THOUGH THE
 JV0851'INTERCHANGE OF INTERSTATE 695 WITH HIGHWAY 40 HAS BEEN CHANGED WITH AN
 JV0851'EXIT RAMP WEST OF THE STATION'S POSITION AND AN ENTRANCE RAMP TO
 JV0851'SOUTH-BOUND I-695 FURTHER WEST.
 JV0851'THE AZIMUTH MARK WAS FOUND IN GOOD CONDITION AS DESCRIBED.  ADD--IT IS
 JV0851'AT THE SOUTH EDGE OF AN EMPTY LOT, 1 INCH UNDER GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4962 ***********************************************************************
 HV4962  DESIGNATION -  CAT
 HV4962  PID         -  HV4962
 HV4962  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4962  COUNTRY     -  US
 HV4962  USGS QUAD   -  MOUNT VERNON (2019)
 HV4962
 HV4962                         *CURRENT SURVEY CONTROL
 HV4962  ______________________________________________________________________
 HV4962* NAD 83(1993) POSITION- 38 42 33.81320(N) 077 02 12.87774(W)   ADJUSTED
 HV4962* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV4962  ______________________________________________________________________
 HV4962  GEOID HEIGHT    -        -32.434 (meters)                     GEOID18
 HV4962  LAPLACE CORR    -         -2.43  (seconds)                    DEFLEC18
 HV4962  HORZ ORDER      -  THIRD
 HV4962
 HV4962.The horizontal coordinates were established by classical geodetic methods
 HV4962.and adjusted by the National Geodetic Survey in November 1994.
 HV4962
 HV4962.The orthometric height was scaled from a topographic map.
 HV4962
 HV4962.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4962.GEOID18 height accuracy estimate available here.
 HV4962
 HV4962.Click photographs - Photos may exist for this station.
 HV4962
 HV4962.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4962
 HV4962. The following values were computed from the NAD 83(1993) position.
 HV4962
 HV4962;                    North         East     Units Scale Factor Converg.
 HV4962;SPC MD       -   115,747.318   396,789.687   MT  0.99995404   -0 01 23.4
 HV4962;SPC MD       -   379,747.66  1,301,800.83   sFT  0.99995404   -0 01 23.4
 HV4962;SPC VA N     - 2,116,755.469 3,627,247.207   MT  0.99994967   +0 54 47.3
 HV4962;SPC VA N     - 6,944,721.90 11,900,393.54   sFT  0.99994967   +0 54 47.3
 HV4962;UTM  18      - 4,286,497.591   322,892.915   MT  0.99998627   -1 16 27.0
 HV4962
 HV4962!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4962!SPC MD       -   1.00000482  x   0.99995404  =   0.99995886
 HV4962!SPC VA N     -   1.00000482  x   0.99994967  =   0.99995449
 HV4962!UTM  18      -   1.00000482  x   0.99998627  =   0.99999109
 HV4962
 HV4962:                Primary Azimuth Mark                     Grid Az
 HV4962:SPC MD       -  NORTH OF BRYAN PT RANGE MARKER           239 06 46.8
 HV4962:SPC VA N     -  NORTH OF BRYAN PT RANGE MARKER           238 10 36.1
 HV4962:UTM  18      -  NORTH OF BRYAN PT RANGE MARKER           240 21 50.4
 HV4962
 HV4962_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2289286497(NAD 83)
 HV4962
 HV4962|---------------------------------------------------------------------|
 HV4962| PID    Reference Object                     Distance      Geod. Az  |
 HV4962|                                                           dddmmss.s |
 HV4962| HV4940 FORT WASHINGTON LIGHT               319.688 METERS 00020     |
 HV4962| DC6790 CAT RM                               14.295 METERS 06217     |
 HV4962| HV4963 CAT 2                                11.856 METERS 07255     |
 HV4962| HV4949 NORTH OF BRYAN PT RANGE MARKER      APPROX. 2.9 KM 2390523.4 |
 HV4962| HV4953 BRYAN PT VANE ON WHITE HOUSE        APPROX. 3.3 KM 2394607.6 |
 HV4962| HV4952 BRYAN PT FLAGPOLE                   APPROX. 3.3 KM 2400225.5 |
 HV4962| HV4950 BRYAN PT END OF DOCK                APPROX. 3.0 KM 2404438.7 |
 HV4962| HV5024 FORT BELVOIR BLDG 509 TANK          APPROX. 8.9 KM 2523351.2 |
 HV4962| HV4971 UPPER POTOMAC RIVER LT 77           APPROX. 1.1 KM 2531148.6 |
 HV4962| HV4972 SHERIDAN PT LIGHT                   APPROX. 1.0 KM 2543048.2 |
 HV4962| HV5025 FORT BELVOIR BLDG 704 TANK          APPROX. 9.3 KM 2584823.2 |
 HV4962| HV4921 MT VERNON DOCK VANE ON CUPOLA       APPROX. 4.5 KM 2632959.8 |
 HV4962| HV4919 MOUNT VERNON HILL FLAGPOLE          APPROX. 4.3 KM 2671750.2 |
 HV4962| HV4922 MT VERNON MANSION CUPOLA            APPROX. 4.3 KM 2675417.1 |
 HV4962| HV4916 FORT HUNT YELLOW WATER TANK         APPROX. 1.3 KM 3051141.6 |
 HV4962| HV2465 FORT                                320.320 METERS 35944     |
 HV4962|---------------------------------------------------------------------|
 HV4962
 HV4962                          SUPERSEDED SURVEY CONTROL
 HV4962
 HV4962  NAD 83(1991)-  38 42 33.81111(N)    077 02 12.87980(W) AD(       ) 3
 HV4962  NAD 83(1986)-  38 42 33.81325(N)    077 02 12.89232(W) AD(       ) 3
 HV4962  NAD 27      -  38 42 33.39300(N)    077 02 13.98100(W) AD(       ) 3
 HV4962
 HV4962.Superseded values are not recommended for survey control.
 HV4962
 HV4962.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4962.See file dsdata.pdf to determine how the superseded data were derived.
 HV4962
 HV4962_MARKER: DS = TRIANGULATION STATION DISK
 HV4962_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4962_STAMPING: CAT 1928
 HV4962_MARK LOGO: CGS
 HV4962_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4962+STABILITY: SURFACE MOTION
 HV4962
 HV4962  HISTORY     - Date     Condition        Report By
 HV4962  HISTORY     - 1928     MONUMENTED       CGS
 HV4962  HISTORY     - 1959     GOOD             CGS
 HV4962  HISTORY     - 1965     SEE DESCRIPTION  CGS
 HV4962
 HV4962                          STATION DESCRIPTION
 HV4962
 HV4962'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4962'STATION IS ON THE E SHORE OF POTOMAC RIVER ON THE FIRST POINT
 HV4962'OF THE DOCK AT FORT WASHINGTON, ON TOP OF THE WOODED BLUFF AND
 HV4962'JUST OFF THE EDGE OF THE GRAVEL ROAD (TOWARD THE CHANNEL) THAT
 HV4962'RUNS ALONG THE SHORE FROM THE FORT WASHINGTON DOCK.  MARK
 HV4962'PROJECTS SIX INCHES ABOVE THE SURFACE, STAMPED CAT 1928.
 HV4962'
 HV4962'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV4962'DISKS SET IN CONCRETE.
 HV4962'
 HV4962'REFERENCE MARK (NO NUMBER) IS ACROSS THE ROAD FROM THE STATION,
 HV4962'PROJECTS 4 INCHES ABOVE SURFACE AND STAMPED CAT 1928.
 HV4962'
 HV4962'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV4962
 HV4962                          STATION RECOVERY (1959)
 HV4962
 HV4962'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (RST)
 HV4962'STATION RECOVERED IN GOOD CONDITION, BUT THE REFERENCE MARK WAS
 HV4962'FOUND DESTROYED.  THE ORIGINAL DESCRIPTION BY C.P. IN 1928 IS
 HV4962'COMPLETE AND ADEQUATE WITH THE FOLLOWING EXCEPTIONS.  THE STATION
 HV4962'NOW PROJECTS 20 INCHES ABOVE THE SURFACE OF THE GROUND AND COULD
 HV4962'BE EASLY MOVED IN THE FUTURE.
 HV4962
 HV4962                          STATION RECOVERY (1965)
 HV4962
 HV4962'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (SPH)
 HV4962'THE STATION WAS RECOVERED IN FAIR CONDITION BUT IS IN DANGER OF
 HV4962'BEING DESTROYED.  EROSION HAS UNDERMINED THE AREA JUST WEST OF
 HV4962'THE STATION AND WILL EVENTUALLY WASH OUT THE STATION.  THE
 HV4962'MONUMENT NOW PROJECTS ABOUT 20 INCHES AND WILL SHAKE A LITTLE IF
 HV4962'PRESSURE IS EXERTED ON IT.  THE REFERENCE MARK WAS REPORTED
 HV4962'DESTROYED IN 1959.  CAT 2 1965 WAS ESTABLISHED AT THIS TIME BUT
 HV4962'CAT 1928 WAS LEFT INTACT.
 HV4962'
 HV4962'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6435 ***********************************************************************
 HV6435  DESIGNATION -  CAT
 HV6435  PID         -  HV6435
 HV6435  STATE/COUNTY-  MD/DORCHESTER
 HV6435  COUNTRY     -  US
 HV6435  USGS QUAD   -  HONGA (2016)
 HV6435
 HV6435                         *CURRENT SURVEY CONTROL
 HV6435  ______________________________________________________________________
 HV6435* NAD 83(1991) POSITION- 38 19 23.60779(N) 076 14 00.49200(W)   ADJUSTED
 HV6435* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6435  ______________________________________________________________________
 HV6435  GEOID HEIGHT    -        -35.107 (meters)                     GEOID18
 HV6435  LAPLACE CORR    -         -6.11  (seconds)                    DEFLEC18
 HV6435  HORZ ORDER      -  THIRD
 HV6435
 HV6435.The horizontal coordinates were established by classical geodetic methods
 HV6435.and adjusted by the National Geodetic Survey in January 1992.
 HV6435
 HV6435.The orthometric height was scaled from a topographic map.
 HV6435
 HV6435.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6435.GEOID18 height accuracy estimate available here.
 HV6435
 HV6435.Click photographs - Photos may exist for this station.
 HV6435
 HV6435.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6435
 HV6435. The following values were computed from the NAD 83(1991) position.
 HV6435
 HV6435;                    North         East     Units Scale Factor Converg.
 HV6435;SPC MD       -    73,162.226   467,028.587   MT  0.99999604   +0 28 52.0
 HV6435;SPC MD       -   240,033.07  1,532,242.96   sFT  0.99999604   +0 28 52.0
 HV6435;UTM  18      - 4,242,398.163   392,179.734   MT  0.99974317   -0 45 53.8
 HV6435
 HV6435!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6435!SPC MD       -   1.00000539  x   0.99999604  =   1.00000143
 HV6435!UTM  18      -   1.00000539  x   0.99974317  =   0.99974856
 HV6435
 HV6435:                Primary Azimuth Mark                     Grid Az
 HV6435:SPC MD       -  BAR                                      208 17 26.2
 HV6435:UTM  18      -  BAR                                      209 32 12.0
 HV6435
 HV6435_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9217942398(NAD 83)
 HV6435
 HV6435|---------------------------------------------------------------------|
 HV6435| PID    Reference Object                     Distance      Geod. Az  |
 HV6435|                                                           dddmmss.s |
 HV6435| CX2183 CAT WM 1                              3.800 METERS 05741     |
 HV6435| CX2182 CAT RM                               11.430 METERS 11645     |
 HV6435| CX2184 CAT WM 2                             10.890 METERS 13717     |
 HV6435| CX2185 CAT WM 3                             10.700 METERS 17107     |
 HV6435| HV6429 BAR                                 APPROX. 1.6 KM 2084618.2 |
 HV6435|---------------------------------------------------------------------|
 HV6435
 HV6435                          SUPERSEDED SURVEY CONTROL
 HV6435
 HV6435  NAD 83(1986)-  38 19 23.60712(N)    076 14 00.50883(W) AD(       ) 3
 HV6435  NAD 27      -  38 19 23.16100(N)    076 14 01.71100(W) AD(       ) 3
 HV6435
 HV6435.Superseded values are not recommended for survey control.
 HV6435
 HV6435.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6435.See file dsdata.pdf to determine how the superseded data were derived.
 HV6435
 HV6435_MARKER: DS = TRIANGULATION STATION DISK
 HV6435_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6435_STAMPING: CAT 1929
 HV6435_MARK LOGO: CGS
 HV6435_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6435+STABILITY: SURFACE MOTION
 HV6435
 HV6435  HISTORY     - Date     Condition        Report By
 HV6435  HISTORY     - 1929     MONUMENTED       CGS
 HV6435  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6435
 HV6435                          STATION DESCRIPTION
 HV6435
 HV6435'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (JS)
 HV6435'STATION IS LOCATED ON HOOPER ISLAND, ON THE EASTERN SHORE OF
 HV6435'CHESAPEAKE BAY AND THE EASTERN SHORE OF TAR BAY.  ON A POINT ABOUT
 HV6435'MIDWAY ON WESTERN SHORE OF UPPER HOOPER ISLAND.  THIS IS ABOUT
 HV6435'800 FEET W OF HOOPER ISLAND HIGH SCHOOL.  STATION IS IN FIRM
 HV6435'GROUND, ABOUT 6 FEET ABOVE HIGH WATER AND 4 METERS E OF
 HV6435'BANK.  POINT IS WOODED WITH TALL TREES.
 HV6435'
 HV6435'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6435'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HV6435'
 HV6435'THE UNDERGROUND MARK IS A BLOCK OF CONCRETE BELOW THE GROUND
 HV6435'CONTAINING A GLASS BOTTLE AS DESCRIBED IN NOTE 7D.
 HV6435'
 HV6435'WITNESS MARKS ARE MARKED BY A TREE WITH A TRIANGULAR BLAZE WITH
 HV6435'A NAIL AT THE CENTER AND EACH APEX OF THE TRIANGLE, AS DESCRIBED
 HV6435'IN NOTE 15A.
 HV6435
 HV6435                          STATION RECOVERY (1942)
 HV6435
 HV6435'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6435'THIS STATION HAS BEEN DESTROYED AND THE REFERENCE MARK IS LOST.
 HV6435'
 HV6435'THE CONCRETE MONUMENT WITH THE STATION DISK STAMPED CAT 1929
 HV6435'WAS FOUND LYING ON A SANDY BEACH.  A THOROUGH SEARCH FAILED TO
 HV6435'LOCATE THE ONLY REFERENCE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5759 ***********************************************************************
 JV5759  DESIGNATION -  CAT
 JV5759  PID         -  JV5759
 JV5759  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5759  COUNTRY     -  US
 JV5759  USGS QUAD   -  ROUND BAY (2016)
 JV5759
 JV5759                         *CURRENT SURVEY CONTROL
 JV5759  ______________________________________________________________________
 JV5759* NAD 83(1991) POSITION- 39 04 19.35803(N) 076 30 30.16355(W)   ADJUSTED
 JV5759* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5759  ______________________________________________________________________
 JV5759  GEOID HEIGHT    -        -33.174 (meters)                     GEOID18
 JV5759  LAPLACE CORR    -         -3.57  (seconds)                    DEFLEC18
 JV5759  HORZ ORDER      -  THIRD
 JV5759
 JV5759.The horizontal coordinates were established by classical geodetic methods
 JV5759.and adjusted by the National Geodetic Survey in January 1992.
 JV5759
 JV5759.The orthometric height was scaled from a topographic map.
 JV5759
 JV5759.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5759.GEOID18 height accuracy estimate available here.
 JV5759
 JV5759.Click photographs - Photos may exist for this station.
 JV5759
 JV5759.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5759
 JV5759. The following values were computed from the NAD 83(1991) position.
 JV5759
 JV5759;                    North         East     Units Scale Factor Converg.
 JV5759;SPC MD       -   156,118.428   442,542.068   MT  0.99995570   +0 18 30.8
 JV5759;SPC MD       -   512,198.54  1,451,906.77   sFT  0.99995570   +0 18 30.8
 JV5759;UTM  18      - 4,325,854.139   369,516.264   MT  0.99980965   -0 57 03.1
 JV5759
 JV5759!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5759!SPC MD       -   1.00000509  x   0.99995570  =   0.99996079
 JV5759!UTM  18      -   1.00000509  x   0.99980965  =   0.99981474
 JV5759
 JV5759_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6951625854(NAD 83)
 JV5759
 JV5759                          SUPERSEDED SURVEY CONTROL
 JV5759
 JV5759  NAD 83(1986)-  39 04 19.35422(N)    076 30 30.17407(W) AD(       ) 3
 JV5759  NAD 27      -  39 04 18.94500(N)    076 30 31.23800(W) AD(       ) 3
 JV5759  USSD        -  39 04 19.30400(N)    076 30 31.13000(W) AD(       ) 3
 JV5759
 JV5759.Superseded values are not recommended for survey control.
 JV5759
 JV5759.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5759.See file dsdata.pdf to determine how the superseded data were derived.
 JV5759
 JV5759_MARKER: Z = SEE DESCRIPTION
 JV5759_SETTING: 0 = UNSPECIFIED SETTING
 JV5759_MARK LOGO: CGS
 JV5759_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5759
 JV5759  HISTORY     - Date     Condition        Report By
 JV5759  HISTORY     - 1898     MONUMENTED       CGS
 JV5759  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5759
 JV5759                          STATION DESCRIPTION
 JV5759
 JV5759'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (JBA)
 JV5759'STATION IS ON THE SOUTHERN SHORE OF UPPER MAGOTHY RIVER, ON A
 JV5759'BLUFF BETWEEN (S) FERRY POINT AND THE MOUTH OF MILL CREEK, ON
 JV5759'LAND OWNED (IN 1898) BY A.A. STINCHCOMB.  IT IS NNE OF AN ORCHARD
 JV5759'AND 3 FEET FROM EDGE OF BLUFF.  STATION IS MARKED BY A PIECE OF
 JV5759'4- BY 4-INCH TIMBER WITH CROSS BOARDS AT TOP SET IN A BOX 3-1/2
 JV5759'FEET DEEP, WITH UPPER END ABOUT 6 INCHES ABOVE SURFACE OF
 JV5759'GROUND.
 JV5759
 JV5759                          STATION RECOVERY (1933)
 JV5759
 JV5759'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5759'STATION WAS SET 3 FEET FROM THE EDGE OF A BLUFF BETWEEN SOUTH
 JV5759'FERRY POINT AND THE MOUTH OF MILL CREEK, ON LAND OWNED BY
 JV5759'A.A. STINCHCOMB, NOW SUBDIVIDED INTO RESIDENCE SITES AND
 JV5759'OCCUPIED BY LAWNS AND HOUSES.  THE BANK HAS WASHED MORE THAN 3
 JV5759'FEET, IT IS NOW PROTECTED BY A RETAINING WALL, SO THAT THE
 JV5759'STATION IS PROBABLY LOST.  NO REFERENCES WERE GIVEN.  MR.
 JV5759'STINCHCOMB, SON OF A.A. STINCHCOMB, DOES NOT REMEMBER EVER
 JV5759'SEEING THIS STATION.  THE ENTIRE BANK IN THIS VICINITY HAS BEEN
 JV5759'GRADED AND SEEDED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4963 ***********************************************************************
 HV4963  DESIGNATION -  CAT 2
 HV4963  PID         -  HV4963
 HV4963  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4963  COUNTRY     -  US
 HV4963  USGS QUAD   -  MOUNT VERNON (2019)
 HV4963
 HV4963                         *CURRENT SURVEY CONTROL
 HV4963  ______________________________________________________________________
 HV4963* NAD 83(1993) POSITION- 38 42 33.92610(N) 077 02 12.40867(W)   ADJUSTED
 HV4963* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV4963  ______________________________________________________________________
 HV4963  GEOID HEIGHT    -        -32.435 (meters)                     GEOID18
 HV4963  LAPLACE CORR    -         -2.43  (seconds)                    DEFLEC18
 HV4963  HORZ ORDER      -  SECOND
 HV4963
 HV4963.The horizontal coordinates were established by classical geodetic methods
 HV4963.and adjusted by the National Geodetic Survey in November 1994.
 HV4963
 HV4963.The orthometric height was scaled from a topographic map.
 HV4963
 HV4963.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4963.GEOID18 height accuracy estimate available here.
 HV4963
 HV4963.Click photographs - Photos may exist for this station.
 HV4963
 HV4963.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4963
 HV4963. The following values were computed from the NAD 83(1993) position.
 HV4963
 HV4963;                    North         East     Units Scale Factor Converg.
 HV4963;SPC MD       -   115,750.795   396,801.021   MT  0.99995404   -0 01 23.1
 HV4963;SPC MD       -   379,759.07  1,301,838.02   sFT  0.99995404   -0 01 23.1
 HV4963;UTM  18      - 4,286,500.819   322,904.322   MT  0.99998622   -1 16 26.7
 HV4963
 HV4963!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4963!SPC MD       -   1.00000482  x   0.99995404  =   0.99995886
 HV4963!UTM  18      -   1.00000482  x   0.99998622  =   0.99999104
 HV4963
 HV4963:                Primary Azimuth Mark                     Grid Az
 HV4963:SPC MD       -  FORT BELVOIR BLDG 509 TANK               252 35 16.3
 HV4963:UTM  18      -  FORT BELVOIR BLDG 509 TANK               253 50 19.9
 HV4963
 HV4963_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2290486500(NAD 83)
 HV4963
 HV4963|---------------------------------------------------------------------|
 HV4963| PID    Reference Object                     Distance      Geod. Az  |
 HV4963|                                                           dddmmss.s |
 HV4963| HV5024 FORT BELVOIR BLDG 509 TANK          APPROX. 8.9 KM 2523353.2 |
 HV4963| HV4962 CAT                                  11.856 METERS 25255     |
 HV4963| HV2465 FORT                                317.095 METERS 35741     |
 HV4963|---------------------------------------------------------------------|
 HV4963
 HV4963                          SUPERSEDED SURVEY CONTROL
 HV4963
 HV4963  NAD 83(1991)-  38 42 33.92401(N)    077 02 12.41073(W) AD(       ) 2
 HV4963  NAD 83(1986)-  38 42 33.92615(N)    077 02 12.42325(W) AD(       ) 2
 HV4963  NAD 27      -  38 42 33.50600(N)    077 02 13.51200(W) AD(       ) 2
 HV4963
 HV4963.Superseded values are not recommended for survey control.
 HV4963
 HV4963.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4963.See file dsdata.pdf to determine how the superseded data were derived.
 HV4963
 HV4963_MARKER: DS = TRIANGULATION STATION DISK
 HV4963_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4963_STAMPING: CAT 2 1965
 HV4963_MARK LOGO: CGS
 HV4963_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4963+STABILITY: SURFACE MOTION
 HV4963
 HV4963  HISTORY     - Date     Condition        Report By
 HV4963  HISTORY     - 1965     MONUMENTED       CGS
 HV4963
 HV4963                          STATION DESCRIPTION
 HV4963
 HV4963'DESCRIBED BY COAST AND GEODETIC SURVEY 1965 (SPH)
 HV4963'STATION IS ON THE EAST SHORE OF THE POTOMAC RIVER ON A POINT 0.2
 HV4963'MILE SOUTH OF THE FORT WASHINGTON BELL AND LIGHT TOWER IN FORT
 HV4963'WASHINGTON PARK ABOUT 9 MILES NORTHWEST OF WALDORF.  IT IS 40 FEET
 HV4963'EAST OF THE ERODING BANK OF THE RIVER, 22 FEET EAST OF THE
 HV4963'CENTERLINE OF A GRAVELED ROAD AND 12 FEET WEST OF A LARGE
 HV4963'IRREGULAR HUNK OF CONCRETE.  THE MONUMENT IS FLUSH AND THE DISK IS
 HV4963'STAMPED CAT 2 1965.
 HV4963'
 HV4963'STATION CAT 1928 IS BETWEEN THE GRAVELED ROAD AND THE BANK OF THE
 HV4963'RIVER.  THE MONUMENT NOW PROJECTS ABOUT 20 INCHES AND THE DISK IS
 HV4963'STAMPED CAT 1928.  THE EROSIVE ACTION OF THE RIVER WILL EVENTUALLY
 HV4963'DESTROY THIS STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4067 ***********************************************************************
 JV4067  DESIGNATION -  CATCH 2 RESET
 JV4067  PID         -  JV4067
 JV4067  STATE/COUNTY-  MD/HOWARD
 JV4067  COUNTRY     -  US
 JV4067  USGS QUAD   -  WOODBINE (2016)
 JV4067
 JV4067                         *CURRENT SURVEY CONTROL
 JV4067  ______________________________________________________________________
 JV4067* NAD 83(1993) POSITION- 39 20 47.88852(N) 077 05 02.89712(W)   ADJUSTED
 JV4067* NAVD 88 ORTHO HEIGHT -   221.01  (+/-2cm)      725.1   (feet) VERTCON3
 JV4067  ______________________________________________________________________
 JV4067  GEOID HEIGHT    -        -31.861 (meters)                     GEOID18
 JV4067  LAPLACE CORR    -         -0.39  (seconds)                    DEFLEC18
 JV4067  HORZ ORDER      -  SECOND
 JV4067  VERT ORDER      -  THIRD (See Below)
 JV4067
 JV4067.The horizontal coordinates were established by classical geodetic methods
 JV4067.and adjusted by the National Geodetic Survey in November 1994.
 JV4067
 JV4067.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4067.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4067
 JV4067.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4067.GEOID18 height accuracy estimate available here.
 JV4067
 JV4067.The vertical order pertains to the NGVD 29 superseded value.
 JV4067
 JV4067.Click photographs - Photos may exist for this station.
 JV4067
 JV4067.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4067
 JV4067. The following values were computed from the NAD 83(1993) position.
 JV4067
 JV4067;                    North         East     Units Scale Factor Converg.
 JV4067;SPC MD       -   186,491.273   392,747.237   MT  0.99998355   -0 03 10.1
 JV4067;SPC MD       -   611,846.78  1,288,538.23   sFT  0.99998355   -0 03 10.1
 JV4067;UTM  18      - 4,357,315.676   320,406.845   MT  0.99999714   -1 19 18.2
 JV4067
 JV4067!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4067!SPC MD       -   0.99997033  x   0.99998355  =   0.99995388
 JV4067!UTM  18      -   0.99997033  x   0.99999714  =   0.99996747
 JV4067
 JV4067:                Primary Azimuth Mark                     Grid Az
 JV4067:SPC MD       -  ATERS 2                                  273 56 56.3
 JV4067:UTM  18      -  ATERS 2                                  275 13 04.4
 JV4067
 JV4067_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2040657315(NAD 83)
 JV4067
 JV4067|---------------------------------------------------------------------|
 JV4067| PID    Reference Object                     Distance      Geod. Az  |
 JV4067|                                                           dddmmss.s |
 JV4067| JV2443 CATCH 2 RM 3                          3.935 METERS 01037     |
 JV4067| JV2440 CATCH                                21.445 METERS 24707     |
 JV4067| JV2436 ATERS 2                             APPROX. 0.7 KM 2735346.2 |
 JV4067| JV2444 CATCH 2 RM 4                          6.367 METERS 28816     |
 JV4067|---------------------------------------------------------------------|
 JV4067
 JV4067                          SUPERSEDED SURVEY CONTROL
 JV4067
 JV4067  NAD 83(1991)-  39 20 47.88902(N)    077 05 02.89809(W) AD(       ) 2
 JV4067  NAD 83(1986)-  39 20 47.88813(N)    077 05 02.90690(W) AD(       ) 2
 JV4067  NAD 27      -  39 20 47.51365(N)    077 05 03.98362(W) AD(       ) 2
 JV4067  NGVD 29 (??/??/??)  221.21   (m)          725.8    (f) RESET       3  
 JV4067  NGVD 29             221.18   (m)          725.7    (f) LEVELING    3  
 JV4067
 JV4067.Superseded values are not recommended for survey control.
 JV4067
 JV4067.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4067.See file dsdata.pdf to determine how the superseded data were derived.
 JV4067
 JV4067_MARKER: DH = HORIZONTAL CONTROL DISK
 JV4067_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4067_STAMPING: CATCH 2 1971 1977
 JV4067_MARK LOGO: NGS
 JV4067_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4067+STABILITY: SURFACE MOTION
 JV4067
 JV4067  HISTORY     - Date     Condition        Report By
 JV4067  HISTORY     - 1971     MONUMENTED       NGS
 JV4067  HISTORY     - 1977     SEE DESCRIPTION  NGS
 JV4067  HISTORY     - 1977     GOOD             NGS
 JV4067
 JV4067                          STATION DESCRIPTION
 JV4067
 JV4067'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV4067'STATION IS LOCATED ON THE TOP OF A CUT BANK ON THE NORTH SIDE OF
 JV4067'INTERSTATE HIGHWAY I-70N, ABOUT 4.7 MILES EAST-SOUTHEAST OF
 JV4067'RIDGEVILLE, 4.5 MILES EAST-SOUTHEAST OF MOUNT AIRY, 1.5 MILES
 JV4067'SOUTH-SOUTHWEST OF WOODBINE, 1.0 MILE NORTHWEST OF LISBON, AND 0.6
 JV4067'MILE EAST OF WHERE THE WATERVUKKE ROAD CROSSES OVER I-70N.  THE
 JV4067'STATION IS ON THE TOP OF A CUT BANK ABOUT 30 FEET ABOVE THE
 JV4067'HIGHWAY, NEAR THE EAST EDGE OF OPEN PASTURE LAND, 14.5 FEET SOUTH
 JV4067'OF THE SURVEYED RIGHT-OF-WAY LINE, 5.0 FEET NORTH OF TOP OF
 JV4067'PROPOSED CUT BANK, 3.0 FEET SOUTH OF A METAL WITNESS POST
 JV4067'AND SIGN, AND ON SOUTH END OF AN EXTENDED LINE OF A ROW OF FENCE
 JV4067'POST ALONG THE WEST EDGE OF A WOODED AREA.  THE MARK IS SET FLUSH
 JV4067'WITH THE GROUND AND THE DISK IS STAMPED, CATCH 2 1971.
 JV4067'
 JV4067'REFERENCE MARK NO. 3 IS LOCATED AT THE EAST EDGE OF OPEN FIELD
 JV4067'AND WEST EDGE OF A WOODS LINE, 3 FEET WEST OF THE EXTENDED LINE OF
 JV4067'A ROW OF FENCE POST TO THE NORTH, AND IS 1.5 FEET SOUTH OF THE NEW
 JV4067'SURVEYED RIGHT-OF-WAY LINE FOR I-70N.  IT IS SET FLUSH WITH THE
 JV4067'GROUND AND THE DISK IS STAMPED, CATCH 2 NO 3 1971.
 JV4067'
 JV4067'REFERENCE MARK NO. 4 IS IN PASTURE LAND 24 FEET WEST OF THE EDGE OF
 JV4067'A WOODS AND 13 FEET SOUTH OF THE NEW SURVEYED RIGHT-OF-WAY LINE FOR
 JV4067'I-70N.  IT SET FLUSH WITH THE GROUND AND THE DISK IS STAMPED,
 JV4067'CATCH 2 NO 4, 1971.
 JV4067'
 JV4067'EITHER STATION ATERS 2 AND/OR LISBON 2 CAN SERVE FOR AZIMUTH MARK.
 JV4067'
 JV4067'TO REACH THE STATION FROM THE INTERCHANGE OF I-70N AND STATE
 JV4067'HIGHWAY NO. 97 (0.5 MILE NORTH OF COOKSVILLE), GO WESTERLY ON
 JV4067'HIGHWAY I-70N FOR 3.9 MILES TO STATION ON RIGHT ON TOP OF CUT BANK.
 JV4067
 JV4067                          STATION RECOVERY (1977)
 JV4067
 JV4067'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 JV4067'THE STATION SURFACE MARK WAS FOUND DESTROYED.  THE STATION
 JV4067'SUB-SURFACE MARK, REFERENCE MARKS THREE AND FOUR WERE FOUND IN
 JV4067'GOOD CONDITION.  A NEW STATION SURFACE DISK WAS SET.
 JV4067'
 JV4067'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV4067'
 JV4067'THE STATION IS LOCATED ABOUT 19 MILES EAST-SOUTHEAST OF FREDRICK,
 JV4067'2 MILES SOUTH-SOUTHWEST OF WOODBINE AND 1 MILE NORTHWEST OF
 JV4067'LISBON.  IT IS ON ROAD RIGHT-OF-WAY.
 JV4067'
 JV4067'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 70 AND STATE
 JV4067'HIGHWAY 94 WHICH IS ABOUT 1/4 MILE NORTH OF THE SMALL VILLAGE OF
 JV4067'LISBON, GO WEST ON INTERSTATE HIGHWAY 70 FOR 0.9 MILE TO A CUTBANK
 JV4067'ON THE RIGHT AND THE STATION ATOP THE BANK.
 JV4067'
 JV4067'REFERENCE MARK THREE IS A STANDARD DISK STAMPED CATCH 2 NO 3 1971
 JV4067'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 JV4067'WITH THE SURFACE.  IT IS 25 FEET NORTH-NORTHEAST OF THE EDGE OF THE
 JV4067'CUTBANK, 16 FEET WEST-SOUTHWEST OF THE MOST SOUTHWEST OAK TREE,
 JV4067'AND 1.3 FEET SOUTH-SOUTHWEST OF THE WITNESS POST.  (NOTE 11B)
 JV4067'
 JV4067'REFERENCE MARK FOUR IS A STANDARD DISK STAMPED CATCH 2 NO 4 1971
 JV4067'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 JV4067'6-INCHES BELOW THE SURFACE.  IT IS 38.5 FEET WEST-SOUTHWEST OF THE
 JV4067'MOST SOUTHWEST OAK TREE, 23.8 FEET SOUTHWEST OF THE WITNESS POST,
 JV4067'18 FEET NORTH-NORTHEAST OF THE EDGE OF THE CUTBANK, AND 14.2 FEET
 JV4067'SOUTHWEST OF THE WITNESS POST.  (NOTE 11B)
 JV4067'
 JV4067'THE STATION SURFACE DISK IS A STANDARD DISK STAMPED CATCH 2 1971
 JV4067'1977 SET IN THE TOP OF A 24-INCH ROUND CONCRETE MONUMENT WHICH IS
 JV4067'FLUSH WITH THE SURFACE.  THE SUB-SURFACE DISK IS STAMPED CATCH 2
 JV4067'1971, SET IN THE TOP OF A 8-INCH MASS OF CONCRETE WHICH IS ABOUT
 JV4067'30-INCHES BELOW THE SURFACE.  THEY ARE ABOUT 30 FEET HIGHER THAN
 JV4067'INTERSTATE HIGHWAY 70, 21.7 FEET SOUTHWEST OF THE MOST SOUTHWEST
 JV4067'24-INCH OAK TREE IN A GROUP OF SEVERAL, 14.3 FEET SOUTHWEST OF
 JV4067'A WITNESS POST SET IN THE EDGE OF THE RIGHT-OF-WAY FENCED, AND
 JV4067'12 FEET NORTHEAST OF THE EDGE OF THE CUTBANK.  (NOTE 1B 7A)
 JV4067'
 JV4067'TRAVERSE STATIONS ATERS 2 1971 OR LISBON 2 1971 MAY BE USED AS AN
 JV4067'AZIMUTH MARK FROM THIS STATION, SEE DESCRIPTION THEREOF.
 JV4067'
 JV4067'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4067'1 MILE NORTHWEST OF LISBON.
 JV4067
 JV4067                          STATION RECOVERY (1977)
 JV4067
 JV4067'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 JV4067'1 MI W FROM LISBON.
 JV4067'LOCATED 0.9 MILES W ALONG INTERSTATE HIGHWAY 70 FROM ITS JUNCTION
 JV4067'WITH STATE HIGHWAY 94, 21.7 FT SW OF THE MOST SW TREE IN A WOODED
 JV4067'AREA 12 FT NW OF A CUTBANK LEADING DOWN TO INTERSTATE HIGHWAY 70.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2443 ***********************************************************************
 JV2443  DESIGNATION -  CATCH 2 RM 3
 JV2443  PID         -  JV2443
 JV2443  STATE/COUNTY-  MD/HOWARD
 JV2443  COUNTRY     -  US
 JV2443  USGS QUAD   -  WOODBINE (2016)
 JV2443
 JV2443                         *CURRENT SURVEY CONTROL
 JV2443  ______________________________________________________________________
 JV2443* NAD 83(1986) POSITION- 39 20 48.01   (N) 077 05 02.87   (W)   HD_HELD1
 JV2443* NAVD 88 ORTHO HEIGHT -   220.76  (meters)      724.3   (feet) RESET
 JV2443  ______________________________________________________________________
 JV2443  GEOID HEIGHT    -        -31.861 (meters)                     GEOID18
 JV2443  VERT ORDER      -  THIRD
 JV2443
 JV2443.The horizontal coordinates were determined by differentially corrected
 JV2443.hand held GPS observations or other comparable positioning techniques
 JV2443.and have an estimated accuracy of +/- 3 meters.
 JV2443
 JV2443.The orthometric height was computed from unverified reset data.
 JV2443
 JV2443.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2443.GEOID18 height accuracy estimate available here.
 JV2443
 JV2443.Click photographs - Photos may exist for this station.
 JV2443
 JV2443;                    North         East    Units  Estimated Accuracy
 JV2443;SPC MD       -   186,495.0     392,747.9     MT  (+/- 3 meters HH1 GPS) 
 JV2443
 JV2443_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2040757319(NAD 83)
 JV2443
 JV2443                          SUPERSEDED SURVEY CONTROL
 JV2443
 JV2443  NGVD 29 (??/??/??)  220.97   (m)          725.0    (f) RESET       3  
 JV2443
 JV2443.Superseded values are not recommended for survey control.
 JV2443
 JV2443.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2443.See file dsdata.pdf to determine how the superseded data were derived.
 JV2443
 JV2443_MARKER: DR = REFERENCE MARK DISK
 JV2443_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2443_STAMPING: CATCH 2 NO 3 1971
 JV2443_MARK LOGO: CGS
 JV2443_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2443+STABILITY: SURFACE MOTION
 JV2443
 JV2443  HISTORY     - Date     Condition        Report By
 JV2443  HISTORY     - 1971     MONUMENTED       NGS
 JV2443
 JV2443                          STATION DESCRIPTION
 JV2443
 JV2443'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV2443'4.6 MI E FROM RIDGEVILLE.
 JV2443'ABOUT 3.9 MILES WEST ALONG INTERSTATE HIGHWAY I-70N FROM THE
 JV2443'INTERCHANGE AND JUNCTION OF I-70N AND STATE HIGHWAY NO. 97, 0.5
 JV2443'MILE NORTH OF COOKSVILLE, ON THE TOP OF A 30 FT. CUT BANK ON
 JV2443'NORTH SIDE OF HIGHWAY.  IT IS 12.92 FEET NORTH-NORTHEAST OF THE
 JV2443'STATION MARKER, 10 FEET NORTH OF A METAL WITNESS SIGN AND POST,
 JV2443'JUST WEST OF A WOODED AREA, 3 FEET WEST OF THE EXTENDED LINE OF
 JV2443'A ROW OF FENCE POSTS, AND 1.5 FEET SOUTH OF SURVEYED RIGHT-OF-WAY
 JV2443'LINE FOR THE NORTH BOUNDARY OF HIGHWAY.  IT IS SET IN THE
 JV2443'TOP OF A ROUND CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2444 ***********************************************************************
 JV2444  DESIGNATION -  CATCH 2 RM 4
 JV2444  PID         -  JV2444
 JV2444  STATE/COUNTY-  MD/HOWARD
 JV2444  COUNTRY     -  US
 JV2444  USGS QUAD   -  WOODBINE (2016)
 JV2444
 JV2444                         *CURRENT SURVEY CONTROL
 JV2444  ______________________________________________________________________
 JV2444* NAD 83(1986) POSITION- 39 20 47.95   (N) 077 05 03.15   (W)   HD_HELD1
 JV2444* NAVD 88 ORTHO HEIGHT -   220.59  (meters)      723.7   (feet) RESET
 JV2444  ______________________________________________________________________
 JV2444  GEOID HEIGHT    -        -31.861 (meters)                     GEOID18
 JV2444  VERT ORDER      -  THIRD
 JV2444
 JV2444.The horizontal coordinates were determined by differentially corrected
 JV2444.hand held GPS observations or other comparable positioning techniques
 JV2444.and have an estimated accuracy of +/- 3 meters.
 JV2444
 JV2444.The orthometric height was computed from unverified reset data.
 JV2444
 JV2444.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2444.GEOID18 height accuracy estimate available here.
 JV2444
 JV2444.Click photographs - Photos may exist for this station.
 JV2444
 JV2444;                    North         East    Units  Estimated Accuracy
 JV2444;SPC MD       -   186,493.2     392,741.2     MT  (+/- 3 meters HH1 GPS) 
 JV2444
 JV2444_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2040057317(NAD 83)
 JV2444
 JV2444                          SUPERSEDED SURVEY CONTROL
 JV2444
 JV2444  NGVD 29 (??/??/??)  220.80   (m)          724.4    (f) RESET       3  
 JV2444
 JV2444.Superseded values are not recommended for survey control.
 JV2444
 JV2444.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2444.See file dsdata.pdf to determine how the superseded data were derived.
 JV2444
 JV2444_MARKER: DR = REFERENCE MARK DISK
 JV2444_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2444_STAMPING: CATCH 2 NO 4 1971
 JV2444_MARK LOGO: CGS
 JV2444_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2444+STABILITY: SURFACE MOTION
 JV2444
 JV2444  HISTORY     - Date     Condition        Report By
 JV2444  HISTORY     - 1971     MONUMENTED       NGS
 JV2444
 JV2444                          STATION DESCRIPTION
 JV2444
 JV2444'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV2444'4.6 MI E FROM RIDGEVILLE.
 JV2444'ABOUT 3.9 MILES WEST ALONG INTERSTATE HIGHWAY I-70N FROM THE
 JV2444'INTERCHANGE WITH STATE HIGHWAY NO. 97, 0.5 MILE NORTH OF
 JV2444'COOKSVILLE, ON THE TOP OF A 30 FOOT CUT BANK ON NORTH SIDE OF
 JV2444'HIGHWAY.  IT IS IN PASTURE LAND 20.99 FEET WEST-NORTHWEST OF
 JV2444'THE TRIANGULATION STATION, 24 FEET WEST OF EDGE OF WOODS, 13
 JV2444'FEET SOUTH OF THE NEW SURFEYED RIGHT-OF-WAY BOUNDARY FOR I-70N,
 JV2444'AND 21 FEET WEST OF A METAL WITNESS POST AND SIGN.  SET IN THE
 JV2444'TOP OF A ROUND CONCRETE MONUMENT THAT IS FLUSH WITH THE SURFACE
 JV2444'OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7204 ***********************************************************************
 HV7204  DESIGNATION -  CATO
 HV7204  PID         -  HV7204
 HV7204  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7204  COUNTRY     -  US
 HV7204  USGS QUAD   -  DEALE (2016)
 HV7204
 HV7204                         *CURRENT SURVEY CONTROL
 HV7204  ______________________________________________________________________
 HV7204* NAD 83(1993) POSITION- 38 52 10.66186(N) 076 30 45.33610(W)   ADJUSTED
 HV7204* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7204  ______________________________________________________________________
 HV7204  GEOID HEIGHT    -        -33.470 (meters)                     GEOID18
 HV7204  LAPLACE CORR    -         -3.59  (seconds)                    DEFLEC18
 HV7204  HORZ ORDER      -  THIRD
 HV7204
 HV7204.The horizontal coordinates were established by classical geodetic methods
 HV7204.and adjusted by the National Geodetic Survey in November 1994.
 HV7204
 HV7204.The orthometric height was scaled from a topographic map.
 HV7204
 HV7204.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7204.GEOID18 height accuracy estimate available here.
 HV7204
 HV7204.Click photographs - Photos may exist for this station.
 HV7204
 HV7204.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7204
 HV7204. The following values were computed from the NAD 83(1993) position.
 HV7204
 HV7204;                    North         East     Units Scale Factor Converg.
 HV7204;SPC MD       -   133,646.725   442,297.336   MT  0.99994985   +0 18 21.3
 HV7204;SPC MD       -   438,472.63  1,451,103.84   sFT  0.99994985   +0 18 21.3
 HV7204;UTM  18      - 4,303,396.381   368,778.595   MT  0.99981203   -0 56 57.7
 HV7204
 HV7204!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7204!SPC MD       -   1.00000529  x   0.99994985  =   0.99995514
 HV7204!UTM  18      -   1.00000529  x   0.99981203  =   0.99981732
 HV7204
 HV7204:                Primary Azimuth Mark                     Grid Az
 HV7204:SPC MD       -  CURTIS                                   144 16 29.4
 HV7204:UTM  18      -  CURTIS                                   145 31 48.4
 HV7204
 HV7204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6877803396(NAD 83)
 HV7204
 HV7204|---------------------------------------------------------------------|
 HV7204| PID    Reference Object                     Distance      Geod. Az  |
 HV7204|                                                           dddmmss.s |
 HV7204| HV6297 CURTIS                              APPROX. 2.2 KM 1443450.7 |
 HV7204| CX2186 CATO RP                              20.010 METERS 15730     |
 HV7204| HV7179 B BETA                              APPROX. 2.0 KM 1871048.6 |
 HV7204|---------------------------------------------------------------------|
 HV7204
 HV7204                          SUPERSEDED SURVEY CONTROL
 HV7204
 HV7204  NAD 83(1986)-  38 52 10.65874(N)    076 30 45.34818(W) AD(       ) 3
 HV7204  NAD 27      -  38 52 10.25500(N)    076 30 46.49200(W) AD(       ) 3
 HV7204  USSD        -  38 52 10.61900(N)    076 30 46.31300(W) AD(       ) 3
 HV7204
 HV7204.Superseded values are not recommended for survey control.
 HV7204
 HV7204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7204.See file dsdata.pdf to determine how the superseded data were derived.
 HV7204
 HV7204_MARKER: H = DRILL HOLE
 HV7204_SETTING: 0 = UNSPECIFIED SETTING
 HV7204
 HV7204  HISTORY     - Date     Condition        Report By
 HV7204  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7204  HISTORY     - 1933     MARK NOT FOUND   MDDNR
 HV7204  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV7204
 HV7204                          STATION DESCRIPTION
 HV7204
 HV7204'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7204'ON THE N SHORE OF WEST RIVER, AT E SIDE OF ENTRANCE TO RHODE
 HV7204'RIVER, ON EXTREME W END OF A LOW SAND POINT AWASH AT HIGH TIDE.
 HV7204'STATION IS 75 YARDS W OF 12-FOOT BANK.
 HV7204'
 HV7204'STATION IS 75 YARDS W OF 12-FOOT BANK.  STATION MARK IS AN AUGER
 HV7204'HOLE IN A PINE STUB PROJECTING ABOUT 2 INCHES ABOVE SURFACE OF GROUND.
 HV7204'
 HV7204'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7204'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7204'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7204'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7204'IS 20.01 METERS (65.6 FEET) FROM STATION IN BEARING S 84 DEG 33
 HV7204'MIN E. DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV7204'REFERENCE ARE AS FOLLOWS--CHIMNEY ON WHITE HOUSE ON OPPOSITE
 HV7204'SHORE, 1/2 MILE, S 47 DEG 35 MIN W.  CUPOLA ON LARGE BUILDING, 1
 HV7204'MILE, N 69 DEG 51 MIN W.  S PEAK OF PACKING HOUSE, 1 MILE, N 53
 HV7204'DEG 54 MIN W.  PEAK OF CARR WHARF HOUSE, 1 1/4 MILES, N 25 DEG 28
 HV7204'MIN W.  CHIMNEY ON RED-ROOF HOUSE, 1/4 MILE, N 1 DEG 35 MIN W.
 HV7204'PEAK OF NOWELL PIER WHARF HOUSE, 1 MILE, S 14 DEG 44 MIN E.
 HV7204
 HV7204                          STATION RECOVERY (1933)
 HV7204
 HV7204'RECOVERY NOTE BY MD DEPT OF NAT RES 1933
 HV7204'STATION REPORTED LOST BY H.E. COLLINS, ENGINEER.
 HV7204
 HV7204                          STATION RECOVERY (2003)
 HV7204
 HV7204'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7204'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4650 ***********************************************************************
 AB4650  DESIGNATION -  CATOCTIN
 AB4650  PID         -  AB4650
 AB4650  STATE/COUNTY-  MD/CARROLL
 AB4650  COUNTRY     -  US
 AB4650  USGS QUAD   -  NEW WINDSOR (2016)
 AB4650
 AB4650                         *CURRENT SURVEY CONTROL
 AB4650  ______________________________________________________________________
 AB4650* NAD 83(2011) POSITION- 39 36 46.85968(N) 077 01 59.96701(W)   ADJUSTED
 AB4650* NAD 83(2011) ELLIP HT-   197.025 (meters)        (06/27/12)   ADJUSTED
 AB4650* NAD 83(2011) EPOCH   -  2010.00
 AB4650* NAVD 88 ORTHO HEIGHT -   229.5   (meters)      753.    (feet) GPS OBS
 AB4650  ______________________________________________________________________
 AB4650  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4650  GEOID HEIGHT    -        -32.448 (meters)                     GEOID99
 AB4650  GEOID HEIGHT    -        -32.436 (meters)                     GEOID18
 AB4650  NAD 83(2011) X  -  1,104,053.082 (meters)                     COMP
 AB4650  NAD 83(2011) Y  - -4,794,901.019 (meters)                     COMP
 AB4650  NAD 83(2011) Z  -  4,045,103.449 (meters)                     COMP
 AB4650  LAPLACE CORR    -          4.80  (seconds)                    DEFLEC18
 AB4650
 AB4650  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4650  Standards:
 AB4650         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4650            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4650  -------------------------------------------------------------------
 AB4650  NETWORK    0.79   2.04           0.38   0.23   1.04      0.05336913
 AB4650  -------------------------------------------------------------------
 AB4650  Click here for local accuracies and other accuracy information.
 AB4650
 AB4650.The horizontal coordinates were established by GPS observations
 AB4650.and adjusted by the National Geodetic Survey in June 2012.
 AB4650
 AB4650.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4650.been affixed to the stable North American tectonic plate. See 
 AB4650.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4650
 AB4650.The horizontal coordinates are valid at the epoch date displayed above
 AB4650.which is a decimal equivalence of Year/Month/Day.
 AB4650
 AB4650.The orthometric height was determined by GPS observations and a
 AB4650.high-resolution geoid model.
 AB4650
 AB4650.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4650.GEOID18 height accuracy estimate available here.
 AB4650
 AB4650.Click photographs - Photos may exist for this station.
 AB4650
 AB4650.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4650
 AB4650.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4650
 AB4650.The ellipsoidal height was determined by GPS observations
 AB4650.and is referenced to NAD 83.
 AB4650
 AB4650. The following values were computed from the NAD 83(2011) position.
 AB4650
 AB4650;                    North         East     Units Scale Factor Converg.
 AB4650;SPC MD       -   216,063.483   397,138.229   MT  1.00003259   -0 01 15.3
 AB4650;SPC MD       -   708,868.28  1,302,944.34   sFT  1.00003259   -0 01 15.3
 AB4650;UTM  18      - 4,386,782.493   325,453.334   MT  0.99997511   -1 17 48.4
 AB4650
 AB4650!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4650!SPC MD       -   0.99996909  x   1.00003259  =   1.00000168
 AB4650!UTM  18      -   0.99996909  x   0.99997511  =   0.99994420
 AB4650
 AB4650_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2545386782(NAD 83)
 AB4650
 AB4650|---------------------------------------------------------------------|
 AB4650| PID    Reference Object                     Distance      Geod. Az  |
 AB4650|                                                           dddmmss.s |
 AB4650| AB4635 CATOCTIN AZ MK                      389.038 METERS 27059     |
 AB4650|---------------------------------------------------------------------|
 AB4650
 AB4650                          SUPERSEDED SURVEY CONTROL
 AB4650
 AB4650  NAD 83(2007)-  39 36 46.85993(N)    077 01 59.96779(W) AD(2002.00) 0
 AB4650  ELLIP H (02/10/07)  197.046  (m)                       GP(2002.00)    
 AB4650  ELLIP H (08/30/02)  197.048  (m)                       GP(       ) 4 2
 AB4650  NAD 83(1991)-  39 36 46.85932(N)    077 01 59.96851(W) AD(       ) 1
 AB4650  ELLIP H (07/03/96)  196.979  (m)                       GP(       ) 1 1
 AB4650  NAVD 88 (07/03/96)  229.5    (m)  GEOID93  model used  GPS OBS        
 AB4650
 AB4650.Superseded values are not recommended for survey control.
 AB4650
 AB4650.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4650.See file dsdata.pdf to determine how the superseded data were derived.
 AB4650
 AB4650_MARKER: DD = SURVEY DISK
 AB4650_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4650_STAMPING: CATOCTIN 1995
 AB4650_MARK LOGO: MD-013
 AB4650_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4650_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4650+STABILITY: SURFACE MOTION
 AB4650_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4650+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4650
 AB4650  HISTORY     - Date     Condition        Report By
 AB4650  HISTORY     - 1995     MONUMENTED       MD-013
 AB4650
 AB4650                          STATION DESCRIPTION
 AB4650
 AB4650'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4650'STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) FROM THE CENTER OF
 AB4650'WESTMINSTER. TO REACH STATION FROM THE MD ROUTE 140 (BALTIMORE BLVD)
 AB4650'OVERPASS BRIDGE OVER MD ROUTE 97 (OLD WASHINGTON ROAD) GO NORTH ON MD
 AB4650'ROUTE 140 FOR 2.0 MI (3.2 KM) TO THE INTERSECTION WITH HUGHES SHOP
 AB4650'ROAD. TURN RIGHT ON HUGHES SHOP ROAD AND GO NORTH ON HUGHES SHOP ROAD
 AB4650'FOR 1.55 MI (2.49 KM) TO THE INTERSECTION WITH CATOCTIN VIEW ROAD.
 AB4650'TURN RIGHT ON CATOCTIN VIEW ROAD AND GO NORTH FOR 0.05 MI (0.08 KM) TO
 AB4650'THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4650'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 345 FT
 AB4650'(105.2 M) EAST OF THE CENTERLINE OF HUGHES SHOP ROAD, 19.0 FT (5.8 M)
 AB4650'NORTH OF THE CENTERLINE OF CATOCTIN VIEW ROAD, 70.0 FT (21.3 M)
 AB4650'NORTHEAST OF A WELL AND 159 FT (48.5 M) EAST OF THE CENTERLINE OF A
 AB4650'DRIVEWAY LEADING SOUTH TO A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4623 ***********************************************************************
 JV4623  DESIGNATION -  CATOCTIN 2
 JV4623  PID         -  JV4623
 JV4623  STATE/COUNTY-  MD/FREDERICK
 JV4623  COUNTRY     -  US
 JV4623  USGS QUAD   -  POINT OF ROCKS (2016)
 JV4623
 JV4623                         *CURRENT SURVEY CONTROL
 JV4623  ______________________________________________________________________
 JV4623* NAD 83(1993) POSITION- 39 20 44.71698(N) 077 31 11.30186(W)   ADJUSTED
 JV4623* NAVD 88 ORTHO HEIGHT -   270.    (meters)      886.    (feet) SCALED
 JV4623  ______________________________________________________________________
 JV4623  GEOID HEIGHT    -        -32.793 (meters)                     GEOID18
 JV4623  LAPLACE CORR    -          4.66  (seconds)                    DEFLEC18
 JV4623  HORZ ORDER      -  FIRST
 JV4623
 JV4623.The horizontal coordinates were established by classical geodetic methods
 JV4623.and adjusted by the National Geodetic Survey in November 1994.
 JV4623
 JV4623.The orthometric height was scaled from a topographic map.
 JV4623
 JV4623.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4623.GEOID18 height accuracy estimate available here.
 JV4623
 JV4623.Click photographs - Photos may exist for this station.
 JV4623
 JV4623.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4623
 JV4623. The following values were computed from the NAD 83(1993) position.
 JV4623
 JV4623;                    North         East     Units Scale Factor Converg.
 JV4623;SPC MD       -   186,517.695   355,192.026   MT  0.99998343   -0 19 34.5
 JV4623;SPC MD       -   611,933.47  1,165,325.84   sFT  0.99998343   -0 19 34.5
 JV4623;SPC VA N     - 2,186,837.467 3,584,496.730   MT  1.00002912   +0 36 42.3
 JV4623;SPC VA N     - 7,174,649.26 11,760,136.36   sFT  1.00002912   +0 36 42.3
 JV4623;UTM  18      - 4,358,174.821   282,857.605   MT  1.00018058   -1 35 53.4
 JV4623
 JV4623!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4623!SPC MD       -   0.99996282  x   0.99998343  =   0.99994625
 JV4623!SPC VA N     -   0.99996282  x   1.00002912  =   0.99999194
 JV4623!UTM  18      -   0.99996282  x   1.00018058  =   1.00014339
 JV4623
 JV4623:                Primary Azimuth Mark                     Grid Az
 JV4623:SPC MD       -  CATOCTIN 2 AZ MK                         132 47 09.3
 JV4623:SPC VA N     -  CATOCTIN 2 AZ MK                         131 50 52.5
 JV4623:UTM  18      -  CATOCTIN 2 AZ MK                         134 03 28.2
 JV4623
 JV4623_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8285758174(NAD 83)
 JV4623
 JV4623|---------------------------------------------------------------------|
 JV4623| PID    Reference Object                     Distance      Geod. Az  |
 JV4623|                                                           dddmmss.s |
 JV4623| CK6776 CATOCTIN 2 RM 1                      17.280 METERS 01648     |
 JV4623| JV4608 FREDERICK EVAN LUTH CH W SPIRE      APPROX.12.2 KM 0504912.1 |
 JV4623| JV4600 FREDERICK MD SCH FOR DEAF FIN       APPROX.11.7 KM 0532444.6 |
 JV4623| CK6775 CATOCTIN 2 AZ MK                                   1322734.8 |
 JV4623| CK6777 CATOCTIN 2 RM 2                      17.130 METERS 24107     |
 JV4623|---------------------------------------------------------------------|
 JV4623
 JV4623                          SUPERSEDED SURVEY CONTROL
 JV4623
 JV4623  NAD 83(1991)-  39 20 44.71742(N)    077 31 11.30334(W) AD(       ) 1
 JV4623  NAD 83(1986)-  39 20 44.71773(N)    077 31 11.31123(W) AD(       ) 1
 JV4623  NAD 27      -  39 20 44.34700(N)    077 31 12.36000(W) AD(       ) 1
 JV4623
 JV4623.Superseded values are not recommended for survey control.
 JV4623
 JV4623.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4623.See file dsdata.pdf to determine how the superseded data were derived.
 JV4623
 JV4623_MARKER: DS = TRIANGULATION STATION DISK
 JV4623_SETTING: 66 = SET IN ROCK OUTCROP
 JV4623_STAMPING: CATOCTIN 2 1939
 JV4623_MARK LOGO: CGS
 JV4623_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4623+STABILITY: POSITION/ELEVATION WELL
 JV4623
 JV4623  HISTORY     - Date     Condition        Report By
 JV4623  HISTORY     - 1939     MONUMENTED       CGS
 JV4623  HISTORY     - 1942     GOOD             CGS
 JV4623  HISTORY     - 1957     GOOD             MDBCSM
 JV4623
 JV4623                          STATION DESCRIPTION
 JV4623
 JV4623'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4623'STATION IS ABOUT 8 MILES SW OF FREDERICK AND 1.5 MILES SE OF
 JV4623'JEFFERSON ON A FAIRLY LOW TIMBERED RIDGE OF THE CATOCTIN
 JV4623'MOUNTAINS.  ON LAND OWNED AND OCCUPIED BY MR. J.W. DARNER, WHO
 JV4623'LIVES ON THE E SIDE OF THE RIDGE ABOUT 250 YARDS E OF THE
 JV4623'STATION.  MARK IS A STANDARD DISK SET IN A DRILL HOLE IN A
 JV4623'SMALL ROCK OUTCROP ABOUT FLUSH WITH THE GROUND, 22.5 FEET SW OF
 JV4623'A 10-INCH OAK TREE.  26 FEET W OF A WIRE FENCE, AND ABOUT 10
 JV4623'FEET N OF THE EXTENDED LINE OF THE N SIDE OF MR. DARNERS
 JV4623'HOUSE.
 JV4623'
 JV4623'NO UNDERGROUND MARK WAS ESTABLISHED.
 JV4623'
 JV4623'REFERENCE MARKS ARE STANDARD DISKS SET IN DRILL HOLES IN
 JV4623'OUTCROPPING BEDROCK.
 JV4623'
 JV4623'REFERENCE MARK NO.1 IS N OF THE STATION ON THE NW SLOPE OF THE
 JV4623'RIDGE ABOUT 3 FEET LOWER THAN THE STATION.  12 FEET W OF A DIM
 JV4623'TRAIL ROAD, AND 35 FEET W OF A WIRE FENCE.
 JV4623'
 JV4623'REFERENCE MARK NO.2 IS SW OF THE STATION ON THE W SLOPE OF THE
 JV4623'RIDGE, ABOUT 3 FEET LOWER THAN THE STATION, AND 20 FEET W OF
 JV4623'TRAIL ROAD.
 JV4623'
 JV4623'AZIMUTH MARK IS A STANDARD DISK WEDGED IN A DRILL HOLE IN A
 JV4623'BOULDER.  IT IS ABOUT 0.6 MILE ESE OF THE STATION.  15 FEET SW
 JV4623'OF THE CENTER OF DIRT ROAD.  6 FEET NW OF THE CENTER OF A
 JV4623'FARM LANE.  ABOUT 75 FEET SW OF A LOG HOUSE, AND 75 FEET E OF A
 JV4623'TWO-STORY FRAME HOUSE.
 JV4623'
 JV4623'AZIMUTH MARK IS REACHED FROM MR. DARNERS HOUSE BY CONTINUING
 JV4623'SE ON MAIN ROAD FOR 0.3 MILE TO A BOULDER ON THE RIGHT OF THE
 JV4623'ROAD OPPOSITE A LOG HOUSE.
 JV4623'
 JV4623'TO REACH STATION FROM THE INTERSECTION OF U.S. HIGHWAYS 15, 40,
 JV4623'AND 340 IN FREDERICK BY FOLLOWING U.S. HIGHWAY 340 W AND SW
 JV4623'FOR 7.7 MILES TO A ROAD TO THE LEFT ON THE N SIDE OF JEFFERSON
 JV4623'AT A SIGN CATOCTIN 5 MILES, POINT OF ROCKS 7 MILES.  THENCE
 JV4623'LEFT, S, ON NARROW PAVED ROAD 0.2 MILE TO A DIRT ROAD TO THE
 JV4623'LEFT.  THENCE LEFT, SOUTHEASTERLY, FOR 1.3 MILES TO MR. DARNERS
 JV4623'HOUSE ON THE RIGHT.  THENCE CONTINUE STRAIGHT AHEAD 0.1 MILE
 JV4623'DOWN HILL TO A TRAIL TO THE RIGHT NEAR CORNER OF FIELD.  THENCE
 JV4623'RIGHT ON TRAIL THROUGH TIMBER FOR 0.2 MILE TO A DIM RIGHT FORK.
 JV4623'THEN TAKE DIM RIGHT FORK NW AND N 0.3 MILE TO TOP OF HILL AND
 JV4623'STATION.
 JV4623'
 JV4623'HEIGHT OF LIGHT ABOVE STATION MARK 24 METERS.
 JV4623
 JV4623                          STATION RECOVERY (1942)
 JV4623
 JV4623'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (PLB)
 JV4623'ALL MARKS RECOVERED IN GOOD CONDITION.  NEW DESCRIPTION FOLLOWS--
 JV4623'
 JV4623'STATION IS ABOUT 8 MILES SW OF FREDERICK AND 1.5 MILES SE OF
 JV4623'JEFFERSON ON A FAIRLY LOW-TIMBERED RIDGE OF THE CATOCTIN
 JV4623'MOUNTAINS.  ON LAND OWNED AND OCCUPIED BY MR. J.W. DARNER, WHO
 JV4623'LIVES ON THE E SIDE OF THE RIDGE ABOUT 250 YARDS E OF THE
 JV4623'STATION.  MARK IS SET IN A SMALL ROCK OUTCROP ABOUT FLUSH WITH
 JV4623'THE GROUND, 22.5 FEET SW OF A 10-INCH OAK TREE.  26 FEET W OF A
 JV4623'WIRE FENCE, AND ABOUT 10 FEET N OF THE EXTENDED LINE OF THE N
 JV4623'SIDE OF MR. DARNERS HOUSE.
 JV4623'
 JV4623'REFERENCE MARK NO.1 IS N OF THE STATION ON THE NW SLOPE OF THE
 JV4623'RIDGE, ABOUT 3 FEET LOWER THAN THE STATION, AND 20 FEET W OF
 JV4623'TRAIL ROAD.
 JV4623'
 JV4623'REFERENCE MARK NO.2 IS SW OF THE STATION ON THE W SLOPE OF
 JV4623'THE RIDGE, ABOUT 3 FEET LOWER THAN THE STATION, AND 20 FEET W OF
 JV4623'TRAIL ROAD.
 JV4623'
 JV4623'AZIMUTH MARK IS ABOUT 0.6 MILE ESE OF THE STATION.  15 FEET SW
 JV4623'OF THE CENTER OF DIRT ROAD.  6 FEET NW OF THE CENTER OF A FARM
 JV4623'LANE.  ABOUT 75 FEET SW OF A LOG HOUSE, AND 75 FEET E OF A
 JV4623'TWO-STORY FRAME HOUSE.
 JV4623'
 JV4623'TO REACH THE STATION FROM JEFFERSON ON ROUTE 340 AT THE ST. PAULS
 JV4623'LUTHERAN CHURCH GO E ON U.S. ROUTE 340 FOR 0.15 MILE TO A SIDE
 JV4623'ROAD, TURN RIGHT ON NARROW PAVED ROAD AT SIGN CATOCTIN 5, POINT
 JV4623'OF ROCKS 7 AND GO 0.2 MILE TO A DIRT SIDE ROAD LEFT.  TURN LEFT,
 JV4623'SOUTHEASTERLY, FOR 1.3 MILES TO MR. DARNERS HOUSE ON THE RIGHT,
 JV4623'THENCE CONTINUE STRAIGHT AHEAD FOR 0.1 MILE DOWN A HILL TO A
 JV4623'TRAIL ON THE RIGHT AT THE CORNER OF A FIELD, FOLLOW TRAIL FOR
 JV4623'0.25 MILE TO A FORKS AND TRIANGULAR BLAZE ON TREE AND DIM
 JV4623'TRAIL RIGHT.  THEN TAKE DIM RIGHT FORK (NW) AND GO N 0.3 MILE
 JV4623'TO TOP OF HILL AND STATION.
 JV4623'
 JV4623'NOTE--DIRECTIONS TO REFERENCE MARKS DO NOT CHECK OLD
 JV4623'DESCRIPTIONS.  OBSERVATIONS MADE FROM A 50-FOOT TOWER.
 JV4623
 JV4623                          STATION RECOVERY (1957)
 JV4623
 JV4623'RECOVERY NOTE BY MD BUR SURV AND MAPS 1957
 JV4623'THE STATION WAS RECOVERED AND FOUND TO BE IN GOOD CONDITION.  THE
 JV4623'AZIMUTH MARK HAS BEEN DESTROYED BY ROAD CONSTRUCTION.
 JV4623'
 JV4623'STATION MOUNT 1956 WAS ESTABLISHED BY THE MARYLAND
 JV4623'BUREAU OF CONTROL SURVEYS AND MAPS AND IS A BRONZE DISK SET IN
 JV4623'CONCRETE AND PROJECTS 4 IN.  IT IS 25 FT. E OF THE CENTERLINE OF
 JV4623'MOUNTAIN ROAD, NEARLY OPPOSITE A 24-IN. OAK TREE BY A BARN,
 JV4623'44.6 FT. S OF TELEPHONE POLE 176, AND 62.5 FT. SE OF BRACE POLE
 JV4623'176.
 JV4623'
 JV4623'THE AZIMUTH SHOWN ABOVE IS THE PLANE AZIMUTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4635 ***********************************************************************
 AB4635  DESIGNATION -  CATOCTIN AZ MK
 AB4635  PID         -  AB4635
 AB4635  STATE/COUNTY-  MD/CARROLL
 AB4635  COUNTRY     -  US
 AB4635  USGS QUAD   -  NEW WINDSOR (2016)
 AB4635
 AB4635                         *CURRENT SURVEY CONTROL
 AB4635  ______________________________________________________________________
 AB4635* NAD 83(2011) POSITION- 39 36 47.07564(N) 077 02 16.27385(W)   ADJUSTED
 AB4635* NAD 83(2011) ELLIP HT-   174.840 (meters)        (06/27/12)   ADJUSTED
 AB4635* NAD 83(2011) EPOCH   -  2010.00
 AB4635* NAVD 88 ORTHO HEIGHT -   207.3   (meters)      680.    (feet) GPS OBS
 AB4635  ______________________________________________________________________
 AB4635  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4635  GEOID HEIGHT    -        -32.458 (meters)                     GEOID99
 AB4635  GEOID HEIGHT    -        -32.447 (meters)                     GEOID18
 AB4635  NAD 83(2011) X  -  1,103,669.219 (meters)                     COMP
 AB4635  NAD 83(2011) Y  - -4,794,967.494 (meters)                     COMP
 AB4635  NAD 83(2011) Z  -  4,045,094.435 (meters)                     COMP
 AB4635  LAPLACE CORR    -          4.93  (seconds)                    DEFLEC18
 AB4635
 AB4635  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4635  Standards:
 AB4635         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4635            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4635  -------------------------------------------------------------------
 AB4635  NETWORK    0.88   2.25           0.41   0.28   1.15      0.02896080
 AB4635  -------------------------------------------------------------------
 AB4635  Click here for local accuracies and other accuracy information.
 AB4635
 AB4635.The horizontal coordinates were established by GPS observations
 AB4635.and adjusted by the National Geodetic Survey in June 2012.
 AB4635
 AB4635.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4635.been affixed to the stable North American tectonic plate. See 
 AB4635.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4635
 AB4635.The horizontal coordinates are valid at the epoch date displayed above
 AB4635.which is a decimal equivalence of Year/Month/Day.
 AB4635
 AB4635.The orthometric height was determined by GPS observations and a
 AB4635.high-resolution geoid model.
 AB4635
 AB4635.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4635.GEOID18 height accuracy estimate available here.
 AB4635
 AB4635.Click photographs - Photos may exist for this station.
 AB4635
 AB4635.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4635
 AB4635.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4635
 AB4635.The ellipsoidal height was determined by GPS observations
 AB4635.and is referenced to NAD 83.
 AB4635
 AB4635. The following values were computed from the NAD 83(2011) position.
 AB4635
 AB4635;                    North         East     Units Scale Factor Converg.
 AB4635;SPC MD       -   216,070.295   396,749.238   MT  1.00003260   -0 01 25.5
 AB4635;SPC MD       -   708,890.63  1,301,668.13   sFT  1.00003260   -0 01 25.5
 AB4635;UTM  18      - 4,386,797.964   325,064.612   MT  0.99997678   -1 17 58.8
 AB4635
 AB4635!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4635!SPC MD       -   0.99997257  x   1.00003260  =   1.00000517
 AB4635!UTM  18      -   0.99997257  x   0.99997678  =   0.99994935
 AB4635
 AB4635_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2506486797(NAD 83)
 AB4635
 AB4635|---------------------------------------------------------------------|
 AB4635| PID    Reference Object                     Distance      Geod. Az  |
 AB4635|                                                           dddmmss.s |
 AB4635| AB4650 CATOCTIN                            389.038 METERS 09059     |
 AB4635|---------------------------------------------------------------------|
 AB4635
 AB4635                          SUPERSEDED SURVEY CONTROL
 AB4635
 AB4635  NAD 83(2007)-  39 36 47.07589(N)    077 02 16.27461(W) AD(2002.00) 0
 AB4635  ELLIP H (02/10/07)  174.861  (m)                       GP(2002.00)    
 AB4635  ELLIP H (08/30/02)  174.864  (m)                       GP(       ) 4 2
 AB4635  NAD 83(1991)-  39 36 47.07529(N)    077 02 16.27530(W) AD(       ) 1
 AB4635  ELLIP H (07/03/96)  174.795  (m)                       GP(       ) 1 1
 AB4635  NAVD 88 (07/03/96)  207.3    (m)  GEOID93  model used  GPS OBS        
 AB4635
 AB4635.Superseded values are not recommended for survey control.
 AB4635
 AB4635.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4635.See file dsdata.pdf to determine how the superseded data were derived.
 AB4635
 AB4635_MARKER: DD = SURVEY DISK
 AB4635_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4635_STAMPING: CATOCTIN AZI 1995
 AB4635_MARK LOGO: MD-013
 AB4635_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4635_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4635+STABILITY: SURFACE MOTION
 AB4635_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4635+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4635
 AB4635  HISTORY     - Date     Condition        Report By
 AB4635  HISTORY     - 1995     MONUMENTED       MD-013
 AB4635
 AB4635                          STATION DESCRIPTION
 AB4635
 AB4635'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4635'STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) FROM THE CENTER OF
 AB4635'WESTMINSTER. TO REACH STATION FROM THE MD ROUTE 140 (BALTIMORE BLVD)
 AB4635'OVERPASS OVER MD ROUTE 97 (OLD WASHINGTON ROAD) GO NORTH ON MD ROUTE
 AB4635'140 FOR 2.0 MI (3.2 KM) TO THE INTERSECTION WITH HUGHES SHOP ROAD.
 AB4635'TURN RIGHT ON HUGHES SHOP ROAD AND GO NORTH ON HUGHES SHOP ROAD FOR
 AB4635'1.5 MI (2.4 KM) TO THE INTERSECTION WITH BAUGHER ROAD. TURN LEFT ON
 AB4635'BAUGHER ROAD (DIRT) AND GO WEST FOR 0.15 MI (0.24 KM) TO THE STATION
 AB4635'ON THE LEFT IN A PASTURE FIELD. STATION MARK IS SET IN THE TOP OF A 10
 AB4635'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 17.5 FT
 AB4635'(5.3 M) SOUTH OF THE CENTERLINE OF THE ROAD, 7.5 FT (2.3 M) SOUTH OF A
 AB4635'WIRE FENCE, 119 EAST OF A 30 IN POPLAR TREE, 112 FT (34.1 M) SOUTHEAST
 AB4635'OF POWER POLE NO. 136512, 91.2 FT (27.8 M) SOUTHEAST OF A BRICK TWO
 AB4635'STORY HOUSE NO. 1448, 118.8 FT (36.2 M) SOUTH OF THE SOUTHERNMOST
 AB4635'CORNER OF A LARGE METAL GARAGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4613 ***********************************************************************
 JV4613  DESIGNATION -  CATOCTIN MTN RADIO WFMD FM MST
 JV4613  PID         -  JV4613
 JV4613  STATE/COUNTY-  MD/FREDERICK
 JV4613  COUNTRY     -  US
 JV4613  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV4613
 JV4613                         *CURRENT SURVEY CONTROL
 JV4613  ______________________________________________________________________
 JV4613* NAD 83(1991) POSITION- 39 29 59.62942(N) 077 29 57.24604(W)   ADJUSTED
 JV4613  ______________________________________________________________________
 JV4613  GEOID HEIGHT    -        -32.959 (meters)                     GEOID18
 JV4613  LAPLACE CORR    -          6.37  (seconds)                    DEFLEC18
 JV4613  HORZ ORDER      -  THIRD
 JV4613
 JV4613.The horizontal coordinates were established by classical geodetic methods
 JV4613.and adjusted by the National Geodetic Survey in January 1992.
 JV4613
 JV4613.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4613.GEOID18 height accuracy estimate available here.
 JV4613
 JV4613.Click photographs - Photos may exist for this station.
 JV4613
 JV4613.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4613
 JV4613. The following values were computed from the NAD 83(1991) position.
 JV4613
 JV4613;                    North         East     Units Scale Factor Converg.
 JV4613;SPC MD       -   203,620.899   357,058.849   MT  1.00000911   -0 18 48.0
 JV4613;SPC MD       -   668,046.23  1,171,450.57   sFT  1.00000911   -0 18 48.0
 JV4613;UTM  18      - 4,375,235.325   285,104.772   MT  1.00016860   -1 35 25.1
 JV4613
 JV4613_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8510475235(NAD 83)
 JV4613
 JV4613                          SUPERSEDED SURVEY CONTROL
 JV4613
 JV4613  NAD 83(1986)-  39 29 59.62975(N)    077 29 57.25649(W) AD(       ) 3
 JV4613  NAD 27      -  39 29 59.27100(N)    077 29 58.30900(W) AD(       ) 3
 JV4613
 JV4613.Superseded values are not recommended for survey control.
 JV4613
 JV4613.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4613.See file dsdata.pdf to determine how the superseded data were derived.
 JV4613
 JV4613_MARKER: 42 = RADIO/TV MAST
 JV4613_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4613+SATELLITE: SATELLITE OBSERVATIONS - November 02, 2003
 JV4613
 JV4613  HISTORY     - Date     Condition        Report By
 JV4613  HISTORY     - 1955     FIRST OBSERVED   CGS
 JV4613  HISTORY     - 1968     GOOD             CGS
 JV4613  HISTORY     - 1987     GOOD             NGS
 JV4613  HISTORY     - 19970808 GOOD             USPSQD
 JV4613  HISTORY     - 20031102 GOOD             USPSQD
 JV4613
 JV4613                          STATION DESCRIPTION
 JV4613
 JV4613'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4613'THE STATION IS ON CATOCTIN MOUNTAIN ABOUT 4 MILES NORTHEAST OF
 JV4613'U.S. HIGHWAY 40 AND 5 MILES NORTH-NORTHEAST OF FREDERICK.  IT IS A
 JV4613'FOUR-LEGGED STRUCTURAL STEEL TOWER, RED AND WHITE IN COLOR, AND 200
 JV4613'FEET HIGH.  THE POINT INTERSECTED WAS THE FLASHING LIGHT AT THE
 JV4613'TOP OF THE MAST.
 JV4613
 JV4613                          STATION RECOVERY (1968)
 JV4613
 JV4613'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (WOK)
 JV4613'THIS INTERSECTION STATION WAS INTERSECTED FROM STATION APPAL 1957.
 JV4613'
 JV4613'THE 1968 DIRECTION AGREES WITH THE 1957 DIRECTION.  THIS
 JV4613'INTERSECTION STATION WAS NOT VISITED.
 JV4613
 JV4613                          STATION RECOVERY (1987)
 JV4613
 JV4613'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 JV4613'THE DESIGNATED MARK WAS RECOVERED AS PREVIOUSLY DESCRIBED.
 JV4613'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV4613
 JV4613                          STATION RECOVERY (1997)
 JV4613
 JV4613'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4613'RECOVERED IN GOOD CONDITION.
 JV4613
 JV4613                          STATION RECOVERY (2003)
 JV4613
 JV4613'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4613'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6047 ***********************************************************************
 JV6047  DESIGNATION -  CATON RESET
 JV6047  PID         -  JV6047
 JV6047  STATE/COUNTY-  MD/BALTIMORE
 JV6047  COUNTRY     -  US
 JV6047  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6047
 JV6047                         *CURRENT SURVEY CONTROL
 JV6047  ______________________________________________________________________
 JV6047* NAD 83(1991) POSITION- 39 17 00.06803(N) 076 45 03.18168(W)   ADJUSTED
 JV6047* NAVD 88 ORTHO HEIGHT -   163.    (meters)      535.    (feet) SCALED
 JV6047  ______________________________________________________________________
 JV6047  GEOID HEIGHT    -        -32.298 (meters)                     GEOID18
 JV6047  LAPLACE CORR    -         -4.29  (seconds)                    DEFLEC18
 JV6047  HORZ ORDER      -  SECOND
 JV6047
 JV6047.The horizontal coordinates were established by classical geodetic methods
 JV6047.and adjusted by the National Geodetic Survey in January 1992.
 JV6047
 JV6047.The orthometric height was scaled from a topographic map.
 JV6047
 JV6047.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6047.GEOID18 height accuracy estimate available here.
 JV6047
 JV6047.Click photographs - Photos may exist for this station.
 JV6047
 JV6047.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6047
 JV6047. The following values were computed from the NAD 83(1991) position.
 JV6047
 JV6047;                    North         East     Units Scale Factor Converg.
 JV6047;SPC MD       -   179,491.577   421,493.142   MT  0.99997509   +0 09 22.9
 JV6047;SPC MD       -   588,881.95  1,382,848.75   sFT  0.99997509   +0 09 22.9
 JV6047;UTM  18      - 4,349,682.407   348,989.752   MT  0.99988078   -1 06 31.7
 JV6047
 JV6047!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6047!SPC MD       -   0.99997953  x   0.99997509  =   0.99995462
 JV6047!UTM  18      -   0.99997953  x   0.99988078  =   0.99986031
 JV6047
 JV6047:                Primary Azimuth Mark                     Grid Az
 JV6047:SPC MD       -  CATON AZ MK 2                            236 24 03.3
 JV6047:UTM  18      -  CATON AZ MK 2                            237 39 57.9
 JV6047
 JV6047_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4898949682(NAD 83)
 JV6047
 JV6047|---------------------------------------------------------------------|
 JV6047| PID    Reference Object                     Distance      Geod. Az  |
 JV6047|                                                           dddmmss.s |
 JV6047| CB1054 CATON RM 3                           23.702 METERS 00303     |
 JV6047| CB1047 CATON AZ MK RESET                                  0712246.4 |
 JV6047| CB1046 CATON AZ MK                                        0712346.5 |
 JV6047| JV5625 BALTIMORE RADIO STA WITH MAST       APPROX. 1.0 KM 0771525.5 |
 JV6047| JV5620 CATONSVILLE STANDPIPE               APPROX. 1.8 KM 0852101.9 |
 JV6047| CB1055 CATON RM 4                           42.148 METERS 09553     |
 JV6047| JV5621 CATONSVILLE SPRING GRO HOSP TK      APPROX. 3.0 KM 1335958.5 |
 JV6047| JV5624 CATONSVILLE PRESB CHURCH SPIRE      APPROX. 1.6 KM 1593742.9 |
 JV6047| JV5837 BALTIMORE GAS HOWARD CO MAST        APPROX. 6.4 KM 2040627.5 |
 JV6047| CB1056 CATON RM 5                                         20520     |
 JV6047| CB1051 CATON AZ MK 2                                      2363326.2 |
 JV6047| CB1052 CATON RM 1                           50.154 METERS 27105     |
 JV6047| JV6057 HOLLOFIELD FIRE LOOKOUT TOWER       APPROX. 4.2 KM 2884649.8 |
 JV6047| CB1053 CATON RM 2                           47.875 METERS 33607     |
 JV6047|---------------------------------------------------------------------|
 JV6047
 JV6047                          SUPERSEDED SURVEY CONTROL
 JV6047
 JV6047  NAD 83(1986)-  39 17 00.06532(N)    076 45 03.19024(W) AD(       ) 2
 JV6047  NAD 27      -  39 16 59.68300(N)    076 45 04.28800(W) AD(       ) 2
 JV6047
 JV6047.Superseded values are not recommended for survey control.
 JV6047
 JV6047.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6047.See file dsdata.pdf to determine how the superseded data were derived.
 JV6047
 JV6047_MARKER: DS = TRIANGULATION STATION DISK
 JV6047_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6047_STAMPING: CANTON 1942 1969
 JV6047_MARK LOGO: CGS
 JV6047_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6047+STABILITY: SURFACE MOTION
 JV6047
 JV6047  HISTORY     - Date     Condition        Report By
 JV6047  HISTORY     - 1942     MONUMENTED       CGS
 JV6047  HISTORY     - 1957     GOOD             CGS
 JV6047  HISTORY     - 1958     GOOD             CGS
 JV6047  HISTORY     - 1969     SEE DESCRIPTION  MDDT
 JV6047  HISTORY     - 1969     SEE DESCRIPTION  CGS
 JV6047  HISTORY     - 1971     GOOD             MDDT
 JV6047  HISTORY     - 1974     GOOD             NGS
 JV6047  HISTORY     - 1977     GOOD             NGS
 JV6047  HISTORY     - 1983     GOOD             NGS
 JV6047  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV6047
 JV6047                          STATION DESCRIPTION
 JV6047
 JV6047'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 JV6047'THE STATION IS ABOUT 1 MILE WNW OF THE TOWN OF CATONSVILLE, IN
 JV6047'THE APEX OF A Y FORMED BY HIGHWAY 40 AND A MACADAM SIDE ROAD.  IT
 JV6047'IS 26 FEET N OF THE E STONE GATE POST, 33 FEET NE OF THE W POST,
 JV6047'51.3 FEET N OF THE CENTER OF THE MACADAM ROAD, AND 46 FEET S OF
 JV6047'THE CENTER OF HIGHWAY 40.  IT IS STAMPED CATON 1942 AND PROJECTS
 JV6047'ABOUT 4 INCHES.
 JV6047'
 JV6047'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV6047'DISKS SET IN CONCRETE.
 JV6047'
 JV6047'REFERENCE MARK NO.1 IS W OF THE STATION, 37 FEET S OF THE
 JV6047'CENTER OF HIGHWAY 40, AND 45 FEET N OF A POWER-LINE POLE.  IT IS
 JV6047'STAMPED CATON NO.1 1942 AND PROJECTS ABOUT 2 INCHES.
 JV6047'
 JV6047'REFERENCE MARK NO.2 IS NNW OF THE STATION, 40 FEET N OF THE
 JV6047'CENTER OF HIGHWAY 40, AND 17 FEET S OF THE WIRE FENCE.  IT IS
 JV6047'STAMPED CATON NO.2 1942 AND PROJECTS ABOUT 3 INCHES.
 JV6047'
 JV6047'THE AZIMUTH MARK IS 0.5 MILE ENE OF THE STATION, AT A CROSS ROAD,
 JV6047'34 FEET W OF THE SIDE ROAD, 39 FEET N OF THE CENTER OF HIGHWAY
 JV6047'40, AND 18.3 FEET W FROM THE POWER-LINE POLE.  IT IS STAMPED
 JV6047'CATON 1942 AND IS SET FLUSH.
 JV6047'
 JV6047'TO REACH THE STATION FROM THE INTERSECTION OF FREDRICK ROAD AND
 JV6047'ROLLING ROAD IN THE WESTERN EDGE OF CATONSVILLE GO N ON ROLLING
 JV6047'ROAD (TOWARDS BELMONT) FOR 1.15 MILES TO ALTERNATE U.S. HIGHWAY
 JV6047'40.  TURN RIGHT ON HIGHWAY 40 AND GO 0.1 MILE TO A MACADAM ROAD
 JV6047'RIGHT.  TURN RIGHT AND THE STATION IS TO THE LEFT.
 JV6047'
 JV6047'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION MANNING 1933.
 JV6047'
 JV6047'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT A STATION JONESTOWN.
 JV6047'
 JV6047'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION DUAL.
 JV6047'
 JV6047'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION SAUTER 1938.
 JV6047'
 JV6047'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION LEACH 1938.
 JV6047'
 JV6047'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6047
 JV6047                          STATION RECOVERY (1957)
 JV6047
 JV6047'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6047'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO
 JV6047'BE IN GOOD CONDITION.  REFERENCE MARK 2 HAS BEEN DESTROYED AND
 JV6047'REFERENCE MARK 3 WAS ESTABLISHED.  REFERENCE MARK 3 IS 30 FT. N
 JV6047'OF THE CENTER OF THE DUAL LANE OF U.S. HIGHWAY 40, AND 75 FT. E
 JV6047'OF THE CROSSOVER BETWEEN THE LANES.  THE MARK IS FLUSH WITH THE
 JV6047'SURFACE OF THE GROUND AND THE DISK IS STAMPED CATON NO 3 1942.
 JV6047'
 JV6047'THIS DISTANCE AND DIRECTION TO REFERENCE MARK 1 AND AZIMUTH MARK
 JV6047'WERE CHECKED AND FOUND TO BE CORRECT.
 JV6047'
 JV6047'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV6047
 JV6047                          STATION RECOVERY (1958)
 JV6047
 JV6047'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV6047'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS FOUND IN GOOD
 JV6047'CONDITION.  THE 1957 DESCRIPTION IS ADEQUATE EXCEPT A REQUEST WAS
 JV6047'MADE TO MOVE THE AZIMUTH MARK TO MAKE WAY FOR THE CONSTRUCTION OF
 JV6047'A NEW SERVICE STATION.
 JV6047'
 JV6047'AZIMUTH MARK IS NOW 39-1/2 FEET EAST OF APPROXIMATE CENTERLINE
 JV6047'OF LINCOLN AVENUE, 48-1/2 FEET NORTH OF APPROXIMATE CENTERLINE OF
 JV6047'U.S. HIGHWAY NO. 40 (EAST BOUND TRAFFIC LANE), 31 FEET SOUTHWEST
 JV6047'OF A LONE CEDAR TREE AND 1-1/2 FEET SOUTH OF A WITNESS POST.  THE
 JV6047'MARK IS A STANDARD AZIMUTH MARK DISK SET IN A 12X12 INCH CONCRETE
 JV6047'MONUMENT, FLUSH WITH THE SURFACE OF GROUND AND THE DISK IS
 JV6047'STAMPED CATON 1942 RESET 1958.
 JV6047'
 JV6047'TO REACH AZIMUTH MARK FROM STATION GO EASTERLY ON U.S. HIGHWAY
 JV6047'NO. 40 FOR 0.5 MILE TO SIDE ROAD LEFT (LINCOLN AVENUE) AND
 JV6047'AZIMUTH MARK ON LEFT SIDE OF HIGHWAY AS DESCRIBED.
 JV6047
 JV6047                          STATION RECOVERY (1969)
 JV6047
 JV6047'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1969
 JV6047'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS FOUND IN GOOD
 JV6047'CONDITION.  DUE TO GRADING FOR AN ENTRANCE TO A NEW PARKING LOT,
 JV6047'THE STATION MARK WAS LOWERED APPROXIMATELY 3.5 FEET IN ITS ORIGINAL
 JV6047'HORIZONTAL POSITION.  REFERENCE MARKS NO.1 AND NO.3 WERE DESTROYED
 JV6047'AND REFERENCE MARKS NO.4 AND NO.5 WERE ESTABLISHED.
 JV6047'
 JV6047'A NEW DESCRIPTION FOLLOWS--
 JV6047'
 JV6047'THE STATION IS LOCATED ABOUT 1.0 MILE WEST-NORTHWEST OF CATONSVILLE
 JV6047'AT THE ENTRANCE TO THE MONTGOMERY WARD SHOPPING CENTER.  IT IS
 JV6047'46.0 FEET SOUTH OF THE CENTERLINE OF THE EASTBOUND LANE OF
 JV6047'U.S. HIGHWAY 40, 21.9 FEET EAST OF SHOPPING CENTER EXIT RAMP,
 JV6047'22.9 FEET WEST-SOUTHWEST OF POWER POLE 280557 AND 15.6 FEET NORTH
 JV6047'OF THE CONCRETE CURB OF PARKING AREA.  IT IS A STANDARD DISK SET
 JV6047'IN THE TOP OF A CONCRETE POST 6 INCHES BELOW THE SURFACE AND
 JV6047'STAMPED CATON 1942 1969.
 JV6047'
 JV6047'REFERENCE MARK NO. 4 IS EAST OF THE STATION, 60.3 FEET SOUTHWEST
 JV6047'OF POWER POLE 280556 AND IS A STANDARD DISK SET FLUSH IN THE
 JV6047'CONCRETE CURB OF PARKING AREA.  THE DISK IS STAMPED CATON NO 4
 JV6047'1969.
 JV6047'
 JV6047'REFERENCE MARK NO. 5 IS SOUTH OF THE STATION, 15.5 FEET EAST OF
 JV6047'SHOPPING CENTER EXIT LANE AND IS A STANDARD DISK SET FLUSH IN THE
 JV6047'CONCRETE CURB OF PARKING AREA.  THE DISK IS STAMPED CATON NO 5
 JV6047'1969.
 JV6047'
 JV6047'THE AZIMUTH MARK IS LOCATED 0.5 MILE EAST-NORTHEAST OF THE
 JV6047'STATION, ALONG U.S. HIGHWAY 40 AT LINCOLN AVENUE, 48.5 FEET NORTH
 JV6047'OF THE CENTERLINE OF THE WESTBOUND LANE OF U.S. HIGHWAY 40, 39.5
 JV6047'FEET EAST OF THE CENTERLINE OF LINCOLN AVENUE AND 8.1 FEET
 JV6047'NORTHEAST OF METAL FENCE AND POST.  IT IS A STANDARD DISK SET IN
 JV6047'THE TOP OF A CONCRETE POST FLUSH WITH THE SURFACE AND STAMPED
 JV6047'CATON 1942 RESET 1958.
 JV6047'
 JV6047'TO REACH THE STATION FROM THE BALTIMORE BELTWAY (I-695) AND
 JV6047'U.S. 40 INTERCHANGE, PROCEED WEST ALONG HIGHWAY 40 FOR 0.7 MILE
 JV6047'TO THE MONTGOMERY WARD SHOPPING CENTER NORTH ENTRANCE AND THE
 JV6047'STATION AS DESCRIBED.
 JV6047'
 JV6047'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV6047'1.0 MILE WNW OF CATONSVILLE.
 JV6047
 JV6047                          STATION RECOVERY (1969)
 JV6047
 JV6047'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (EBK)
 JV6047'THE STATION MARK AND THE AZIMUTH MARK WERE RECOVERED IN GOOD
 JV6047'CONDITION.  REFERENCE MARKS 1 AND 3 WERE DESTROYED WHEN THE
 JV6047'MONTGOMERY WARD SHOPPING CENTER WAS CONSTRUCTED.  REFERENCE MARKS
 JV6047'4 AND 5 WERE ESTABLISHED BY THE MARYLAND STATE ROADS COMMISSION
 JV6047'IN 1969.  THE UNDERGROUND STATION MARK WAS LOWERED TO 3.5 FEET
 JV6047'BY THE ROADS COMMISSION AT THE TIME OF THE CONSTRUCTION.  AFTER
 JV6047'THE CONSTRUCTION OF THE SHOPPING CENTER HAD BEEN COMPLETED, THE
 JV6047'SURFACE STATION MARK WAS RESET BY THE MARYLAND STATE ROADS
 JV6047'COMMISSION AND THE ORIGINAL POSITION WAS HELD.  THE 1958
 JV6047'AZIMUTH MARK IS PARTIALLY OBSTRUCTED BY 4 POLES WHICH ARE ON
 JV6047'LINE.  TANGENTS COULD NOT BE TAKEN ON THE MARK DUE TO
 JV6047'A FENCE AND OTHER OBSTRUCTIONS.  DIRECTIONS WERE OBSERVED ON THE
 JV6047'AZIMUTH MARK BY USING THE SMALL PORTION OF THE LIGHT WHICH WAS
 JV6047'VISIBLE OVER THE MARK AND ASSUMING THE CENTER.  A SATISFACTORY
 JV6047'CHECK ANGLE WAS OBTAINED BETWEEN THE AZIMUTH MARK AND THE
 JV6047'INTERSECTION STATIONS WHICH WERE TAKEN IN 1958.  AN ADDITIONAL
 JV6047'AZIMUTH MARK WAS ESTABLISHED AT THIS TIME.  DUE TO
 JV6047'CHANGES IN THE AREA, A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV6047'
 JV6047'THE STATION MARK IS ABOUT 1 MILE WEST-NORTHWEST OF CATONSVILLE AT
 JV6047'THE NORTH ENTRANCE TO THE MONTGOMERY WARD SHOPPING CENTER.
 JV6047'
 JV6047'TO REACH THE STATION FROM THE BALTIMORE BELTWAY (I-695) AND
 JV6047'U.S. HIGHWAY 40 AT INTERCHANGE NUMBER 15, 1 MILE NORTHWEST OF
 JV6047'CATONSVILLE, GO WEST ON U.S. HIGHWAY 40 FOR 0.2 MILE TO THE 1958
 JV6047'AZIMUTH MARK ON THE RIGHT AT THE JUNCTION WITH LINCOLN
 JV6047'AVENUE.  CONTINUE WEST ON U.S. HIGHWAY 40 FOR 0.5 MILE TO THE
 JV6047'STATION MARK ON THE LEFT AT THE NORTHWEST CORNER OF THE PARKING
 JV6047'LOT FOR THE MONTGOMERY WARD AUTOMOTIVE STORE.
 JV6047'
 JV6047'THE STATION MARK IS A STANDARD DISK STAMPED CATON 1942 1969, SET
 JV6047'IN THE TOP OF A 12-INCH SQUARE CONCRETE POST THAT IS 3 INCHES
 JV6047'BELOW THE GROUND SURFACE.  IT IS 47.0 FEET SOUTH OF THE CENTERLINE
 JV6047'OF THE EASTBOUND LANE OF U.S. HIGHWAY 40, 24.5 FEET EAST OF THE
 JV6047'CENTER OF THE SHOPPING CENTER EXIT RAMP, 23.4 FEET WEST-SOUTHWEST
 JV6047'OF A POWERLINE POLE NUMBERED 280557, 16.5 FEET NORTHWEST OF THE
 JV6047'NORTHWEST CORNER OF THE PARKING LOT AND 5.5 FEET
 JV6047'NORTH-NORTHEAST OF A METAL POLE WITH A LIGHT METER BOX.
 JV6047'
 JV6047'REFERENCE MARK 4 IS A STANDARD DISK STAMPED CATON 1942 1969 NO 4,
 JV6047'CEMENTED IN A DRILL HOLE IN THE CONCRETE CURBING AT THE NORTH
 JV6047'EDGE OF THE PARKING LOT THAT PROJECTS 6 INCHES.  IT IS 63.2 FEET
 JV6047'NORTH OF THE NORTH ENTRANCE TO THE AUTOMOTIVE STORE AND 61.0 FEET
 JV6047'EAST OF A POWERLINE POLE NUMBERED 280556.
 JV6047'
 JV6047'REFERENCE MARK 5 IS A STANDARD DISK STAMPED CATON 1942 1969 NO 5,
 JV6047'CEMENTED IN A DRILL HOLE IN THE CONCRETE CURBING ON THE NORTHWEST
 JV6047'EDGE OF THE PARKING LOT.  IT IS 98.3 FEET WEST-NORTHWEST OF THE
 JV6047'WEST ENTRANCE OF THE WARDS AUTOMOTIVE STORE AND 73.5 FEET
 JV6047'SOUTHWEST OF A POWERLINE POLE NUMBERED 280557.
 JV6047'
 JV6047'AZIMUTH MARK RESET 1958 IS A STANDARD DISK STAMPED CATON 1942
 JV6047'RESET 1958, SET IN THE TOP OF A 10-INCH SQUARE CONCRETE POST THAT
 JV6047'IS FLUSH WITH THE GROUND SURFACE.  IT IS 39.5 FEET EAST OF THE
 JV6047'CENTERLINE OF LINCOLN AVENUE, 20.0 FEET NORTH OF THE NORTH EDGE
 JV6047'OF THE WESTBOUND LANE OF U.S. HIGHWAY 40, 8.1 FEET NORTHEAST OF
 JV6047'WEST OF A METAL FENCE AND 3.8 FEET NORTH OF THE METAL FENCE.
 JV6047'
 JV6047'THE 1969 AZIMUTH MARK IS A STANDARD DISK STAMPED CATON 1942 1969
 JV6047'NO 2 CEMENTED IN A DRILL HOLE IN THE CONCRETE SEPERATOR OF THE 4
 JV6047'LANES OF ROLLING ROAD.  IT IS 86.5 FEET NORTHEAST OF A POWERLINE
 JV6047'POLE NUMBERED 274171, 70.5 FEET SOUTHEAST OF A POWERLINE POLE
 JV6047'NUMBERED 274170 AND 52.54 FEET SOUTH OF A BALTIMORE COUNTY SURVEY
 JV6047'STATION MARK WHICH WAS UNSTAMPED.  THIS MARK WAS NOT USED FOR AN
 JV6047'AZIMUTH MARK DUE TO OBSTRUCTIONS.
 JV6047'
 JV6047'THE DISTANCE BETWEEN THE REFERENCE MARKS COULD NOT BE MEASURED
 JV6047'DUE TO PARKED CARS, OWNERS COULD NOT BE FOUND.
 JV6047'
 JV6047'NOTE--MR. CHARLES W. PARKS OF THE MARYLAND STATE ROADS COMMISSION
 JV6047'WAS CONTACTED AND HE STATED THAT HIS OFFICE HAD LOWERED THE
 JV6047'UNDERGROUND STATION MARK AND THE ORIGINAL POSITION WAS HELD.
 JV6047'
 JV6047'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV6047'1 MILE WEST-NORTHWEST OF CATONSVILLE.
 JV6047
 JV6047                          STATION RECOVERY (1971)
 JV6047
 JV6047'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1971
 JV6047'STATION, REFERENCE MARKS AND AZIMUTH MARKS WERE RECOVERED AS
 JV6047'DESCRIBED IN GOOD CONDITION.
 JV6047'
 JV6047'DISTANCE TO RM 5 WAS REMEASURED AT 137.21 FEET.  THE DIRECTIONS
 JV6047'OBSERVED IN 1969 BY E.B.K. WERE CONFIRMED EXCEPT TO AZIMUTH MARK
 JV6047'RESET 1958 WHICH IS OBSTRUCTED BY 4 POLES ON LINE.
 JV6047
 JV6047                          STATION RECOVERY (1974)
 JV6047
 JV6047'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV6047'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV6047'CONDITION AS DESCRIBED IN THE 1969 DESCRIPTION.  THIS STATION
 JV6047'WAS RECOVERED IN AN ATTEMPT TO ESTABLISH AN AZIMUTH TO
 JV6047'TRIANGULATION STATION CAT 1957.
 JV6047'
 JV6047'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV6047'1 MILE WNW OF CATONSVILLE.
 JV6047
 JV6047                          STATION RECOVERY (1977)
 JV6047
 JV6047'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (DRM)
 JV6047'STATION MARK, RMS 4 AND 5, AND AZ MK 1942 RESET 1958 RECOVERED AS
 JV6047'DESCRIBED.  AZ MK 1942 1969 NO. 2 NOT SEARCHED FOR AT THIS TIME.
 JV6047'
 JV6047'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1.0 MILE NORTH
 JV6047'OF CATONSVILLE.
 JV6047
 JV6047                          STATION RECOVERY (1983)
 JV6047
 JV6047'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (MLS)
 JV6047'THE STATION, RM NO. 4, AND RM NO. 5 WERE RECOVERED IN GOOD
 JV6047'CONDITION AS DESCRIBED WITH THE EXCEPTION THAT THE STATION IS
 JV6047'NOW 9 INCHES BELOW THE GROUND.
 JV6047'
 JV6047'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1.0 MILES NW OF
 JV6047'CATONSVILLE.
 JV6047
 JV6047                          STATION RECOVERY (2003)
 JV6047
 JV6047'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV6047'THE STATION AND REFERENCE MARKS 4 AND 5 WERE NOT FOUND.  MONTGOMERY
 JV6047'WARD IS GONE AND A NEW WAL-MART SHOPPING CENTER HAS BEEN CONSTRUCTED
 JV6047'AT THE SITE WITH A NEW PARKING LOT.  THE POWER POLE DESCRIBED IS
 JV6047'PRESENT AND THE STATION MAY BE PRESENT BUT WELL UNDER GROUND LEVEL.
 JV6047'THE CURBING FOR THE REFERENCE MARKS HAS CHANGED.
 JV6047'THE AZIMUTH WAS RECOVERED IN THE POSITION DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5619 ***********************************************************************
 JV5619  DESIGNATION -  CATONSVILLE BALTIMORE MUN TANK
 JV5619  PID         -  JV5619
 JV5619  STATE/COUNTY-  MD/BALTIMORE
 JV5619  COUNTRY     -  US
 JV5619  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5619
 JV5619                         *CURRENT SURVEY CONTROL
 JV5619  ______________________________________________________________________
 JV5619* NAD 83(1991) POSITION- 39 17 11.42096(N) 076 44 00.18063(W)   ADJUSTED
 JV5619  ______________________________________________________________________
 JV5619  GEOID HEIGHT    -        -32.338 (meters)                     GEOID18
 JV5619  LAPLACE CORR    -         -5.51  (seconds)                    DEFLEC18
 JV5619  HORZ ORDER      -  THIRD
 JV5619
 JV5619.The horizontal coordinates were established by classical geodetic methods
 JV5619.and adjusted by the National Geodetic Survey in January 1992.
 JV5619
 JV5619.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5619.GEOID18 height accuracy estimate available here.
 JV5619
 JV5619.Click photographs - Photos may exist for this station.
 JV5619
 JV5619.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5619
 JV5619. The following values were computed from the NAD 83(1991) position.
 JV5619
 JV5619;                    North         East     Units Scale Factor Converg.
 JV5619;SPC MD       -   179,845.947   423,001.998   MT  0.99997549   +0 10 02.4
 JV5619;SPC MD       -   590,044.58  1,387,799.06   sFT  0.99997549   +0 10 02.4
 JV5619;UTM  18      - 4,350,003.345   350,505.917   MT  0.99987517   -1 05 52.0
 JV5619
 JV5619_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5050550003(NAD 83)
 JV5619
 JV5619                          SUPERSEDED SURVEY CONTROL
 JV5619
 JV5619  NAD 83(1986)-  39 17 11.41803(N)    076 44 00.18900(W) AD(       ) 3
 JV5619  NAD 27      -  39 17 11.04000(N)    076 44 01.29100(W) AD(       ) 3
 JV5619
 JV5619.Superseded values are not recommended for survey control.
 JV5619
 JV5619.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5619.See file dsdata.pdf to determine how the superseded data were derived.
 JV5619
 JV5619_MARKER: 53 = ELEVATED TANK
 JV5619
 JV5619  HISTORY     - Date     Condition        Report By
 JV5619  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5619  HISTORY     - 19940801 MARK NOT FOUND   USPSQD
 JV5619  HISTORY     - 20030921 GOOD             USPSQD
 JV5619  HISTORY     - 20041003 GOOD             USPSQD
 JV5619
 JV5619                          STATION DESCRIPTION
 JV5619
 JV5619'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5619'THE STATION IS LOCATED ABOUT 6 MILES WEST OF THE CENTER OF
 JV5619'BALTIMORE AND ABOUT 1-1/4 MILES NORTH OF THE CENTER OF
 JV5619'CATONSVILLE.  IT IS OF STEEL CONSTRUCTION, HAS 12 LEGS, PAINTED
 JV5619'SILVER AND IS APPROXIMATELY 120 FEET HIGH.  THE POINT INTERSECTED
 JV5619'WAS THE CENTER OF THE TOP OF THE TANK.
 JV5619'
 JV5619'TO REACH THE STATION FROM THE INTERSECTION OF FREDRICK ROAD AND
 JV5619'ROLLING ROAD IN THE WEST EDGE OF CATONSVILLE.  GO NORTH ON ROLLING
 JV5619'ROAD FOR 1.1 MILES TO THE JUNCTION OF U.S. HIGHWAY 40, TURN RIGHT
 JV5619'AND GO EAST ON U.S. HIGHWAY 40 FOR 0.7 MILE TO W.I.T.H. RADIO
 JV5619'TOWER ON RIGHT, CONTINUE NORTH ON U.S. HIGHWAY 40 FOR 0.4 MILE
 JV5619'TO KENT STREET, TURN RIGHT ON KENT STREET FOR 0.05 MILE TO THE
 JV5619'STATION ON LEFT.
 JV5619
 JV5619                          STATION RECOVERY (1994)
 JV5619
 JV5619'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5619'MARK NOT FOUND.
 JV5619
 JV5619                          STATION RECOVERY (2003)
 JV5619
 JV5619'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5619'RECOVERED IN GOOD CONDITION.  TO REACH THE STATION FROM THE JUNCTION
 JV5619'OF HIGHWAY 40 AND KENT STREET, GO SOUTH ON KENT STREET FOR ONE BLOCK
 JV5619'TO CALVERTSON STREET.  TURN LEFT AND GO ONE BLOCK TO DORCHESTER ROAD
 JV5619'ON THE RIGHT AND A GRAVEL ROAD TO THE TOWER ON THE LEFT.
 JV5619
 JV5619                          STATION RECOVERY (2004)
 JV5619
 JV5619'RECOVERY NOTE BY US POWER SQUADRON 2004 (CLB)
 JV5619'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5624 ***********************************************************************
 JV5624  DESIGNATION -  CATONSVILLE PRESB CHURCH SPIRE
 JV5624  PID         -  JV5624
 JV5624  STATE/COUNTY-  MD/BALTIMORE
 JV5624  COUNTRY     -  US
 JV5624  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5624
 JV5624                         *CURRENT SURVEY CONTROL
 JV5624  ______________________________________________________________________
 JV5624* NAD 83(1991) POSITION- 39 16 11.45931(N) 076 44 39.96080(W)   ADJUSTED
 JV5624  ______________________________________________________________________
 JV5624  GEOID HEIGHT    -        -32.334 (meters)                     GEOID18
 JV5624  LAPLACE CORR    -         -4.95  (seconds)                    DEFLEC18
 JV5624  HORZ ORDER      -  THIRD
 JV5624
 JV5624.The horizontal coordinates were established by classical geodetic methods
 JV5624.and adjusted by the National Geodetic Survey in January 1992.
 JV5624
 JV5624.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5624.GEOID18 height accuracy estimate available here.
 JV5624
 JV5624.Click photographs - Photos may exist for this station.
 JV5624
 JV5624.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5624
 JV5624. The following values were computed from the NAD 83(1991) position.
 JV5624
 JV5624;                    North         East     Units Scale Factor Converg.
 JV5624;SPC MD       -   177,994.111   422,053.849   MT  0.99997345   +0 09 37.4
 JV5624;SPC MD       -   583,969.01  1,384,688.34   sFT  0.99997345   +0 09 37.4
 JV5624;UTM  18      - 4,348,173.070   349,517.214   MT  0.99987883   -1 06 15.8
 JV5624
 JV5624_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4951748173(NAD 83)
 JV5624
 JV5624                          SUPERSEDED SURVEY CONTROL
 JV5624
 JV5624  NAD 83(1986)-  39 16 11.45655(N)    076 44 39.96937(W) AD(       ) 3
 JV5624  NAD 27      -  39 16 11.07400(N)    076 44 41.06800(W) AD(       ) 3
 JV5624
 JV5624.Superseded values are not recommended for survey control.
 JV5624
 JV5624.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5624.See file dsdata.pdf to determine how the superseded data were derived.
 JV5624
 JV5624_MARKER: 90 = CHURCH SPIRE
 JV5624
 JV5624  HISTORY     - Date     Condition        Report By
 JV5624  HISTORY     - 1942     FIRST OBSERVED   CGS
 JV5624  HISTORY     - 20030921 GOOD             USPSQD
 JV5624  HISTORY     - 20041003 GOOD             USPSQD
 JV5624
 JV5624                          STATION DESCRIPTION
 JV5624
 JV5624'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 JV5624'THIS INTERSECTION STATION IS THE SPIRE OF THE CATONSVILLE
 JV5624'PRESBYTERIAN CHURCH WHICH IS LOCATED AT THE NW CORNER OF BEECHWOOD
 JV5624'AVENUE AND FREDERICK ROAD.  THE CHURCH IS A BROWN BRICK STRUCTURE
 JV5624'WITH A SLATE ROOF.  THE SPIRE RISES FROM THE APPROXIMATE CENTER
 JV5624'OF THE E SIDE.  THE POINT OF THE SPIRE WAS THE POINT OBSERVED
 JV5624'UPON.
 JV5624
 JV5624                          STATION RECOVERY (2003)
 JV5624
 JV5624'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5624'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 0.4 MILE WEST OF
 JV5624'THE CATONSVILLE POST OFFICE ON FREDERICK ROAD.
 JV5624
 JV5624                          STATION RECOVERY (2004)
 JV5624
 JV5624'RECOVERY NOTE BY US POWER SQUADRON 2004 (CLB)
 JV5624'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5622 ***********************************************************************
 JV5622  DESIGNATION -  CATONSVILLE SPR GROVE HOSP STK
 JV5622  PID         -  JV5622
 JV5622  STATE/COUNTY-  MD/BALTIMORE
 JV5622  COUNTRY     -  US
 JV5622  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5622
 JV5622                         *CURRENT SURVEY CONTROL
 JV5622  ______________________________________________________________________
 JV5622* NAD 83(1991) POSITION- 39 15 51.29403(N) 076 43 33.61288(W)   ADJUSTED
 JV5622  ______________________________________________________________________
 JV5622  GEOID HEIGHT    -        -32.399 (meters)                     GEOID18
 JV5622  LAPLACE CORR    -         -6.56  (seconds)                    DEFLEC18
 JV5622  HORZ ORDER      -  THIRD
 JV5622
 JV5622.The horizontal coordinates were established by classical geodetic methods
 JV5622.and adjusted by the National Geodetic Survey in January 1992.
 JV5622
 JV5622.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5622.GEOID18 height accuracy estimate available here.
 JV5622
 JV5622.Click photographs - Photos may exist for this station.
 JV5622
 JV5622.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5622
 JV5622. The following values were computed from the NAD 83(1991) position.
 JV5622
 JV5622;                    North         East     Units Scale Factor Converg.
 JV5622;SPC MD       -   177,376.865   423,646.107   MT  0.99997278   +0 10 19.1
 JV5622;SPC MD       -   581,943.93  1,389,912.27   sFT  0.99997278   +0 10 19.1
 JV5622;UTM  18      - 4,347,520.896   351,095.307   MT  0.99987301   -1 05 33.3
 JV5622
 JV5622_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5109547520(NAD 83)
 JV5622
 JV5622                          SUPERSEDED SURVEY CONTROL
 JV5622
 JV5622  NAD 83(1986)-  39 15 51.29122(N)    076 43 33.62146(W) AD(       ) 3
 JV5622  NAD 27      -  39 15 50.92100(N)    076 43 34.73300(W) AD(       ) 3
 JV5622
 JV5622.Superseded values are not recommended for survey control.
 JV5622
 JV5622.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5622.See file dsdata.pdf to determine how the superseded data were derived.
 JV5622
 JV5622_MARKER: 63 = STACK
 JV5622_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5622+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2003
 JV5622
 JV5622  HISTORY     - Date     Condition        Report By
 JV5622  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5622  HISTORY     - 19940801 GOOD             USPSQD
 JV5622  HISTORY     - 20030315 GOOD             USPSQD
 JV5622  HISTORY     - 20030921 GOOD             USPSQD
 JV5622  HISTORY     - 20041003 GOOD             USPSQD
 JV5622
 JV5622                          STATION DESCRIPTION
 JV5622
 JV5622'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5622'STATION IS LOCATED ABOUT 1/2 MILE SOUTH OF CANTONSVILLE AND AT
 JV5622'THE SPRING GROVE STATE HOSPITAL.  IT IS CONSTRUCTED OF RED BRICK,
 JV5622'150 FEET HIGH AND ABOUT 12 FEET IN DIAMETER AT THE BASE.
 JV5622'
 JV5622'THE POINT INTERSECTED WAS THE CENTER OF THE TOP OF STACK.
 JV5622
 JV5622                          STATION RECOVERY (1994)
 JV5622
 JV5622'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5622'RECOVERED IN GOOD CONDITION.
 JV5622
 JV5622                          STATION RECOVERY (2003)
 JV5622
 JV5622'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV5622'RECOVERED IN GOOD CONDITION.
 JV5622
 JV5622                          STATION RECOVERY (2003)
 JV5622
 JV5622'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5622'RECOVERED IN GOOD CONDITION.  ACCORDING TO THE POWERHOUSE CHIEF
 JV5622'ENGINEER, THE STACK IS WELL MAINTAINED AND IN GOOD CONDITION.
 JV5622'TO REACH THE POWERHOUSE AND STACK FROM THE JUNCTION OF INTERSTATE 695
 JV5622'AND FREDERICK ROAD, GO WEST ON FREDERICK ROAD FOR 0.4 MILE TO
 JV5622'INGLESIDE AVENUE ON THE RIGHT AND BLOOMSBURY AVENUE ON THE LEFT.  TURN
 JV5622'LEFT (SOUTH) ON BLOOMSBURY AVENUE AND GO 0.6 MILE TO ASYLUM LANE.
 JV5622'TURN LEFT (EAST) ON ASYLUM LANE AND GO 0.3 MILE TO HICKORY STREET ON
 JV5622'THE RIGHT AND THE POWERHOUSE AND STACK ON THE LEFT.
 JV5622
 JV5622                          STATION RECOVERY (2004)
 JV5622
 JV5622'RECOVERY NOTE BY US POWER SQUADRON 2004 (CLB)
 JV5622'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3929 ***********************************************************************
 JU3929  DESIGNATION -  CAUFIEL
 JU3929  PID         -  JU3929
 JU3929  STATE/COUNTY-  MD/CECIL
 JU3929  COUNTRY     -  US
 JU3929  USGS QUAD   -  NORTH EAST (2016)
 JU3929
 JU3929                         *CURRENT SURVEY CONTROL
 JU3929  ______________________________________________________________________
 JU3929* NAD 83(1991) POSITION- 39 31 55.42620(N) 075 53 29.34711(W)   ADJUSTED
 JU3929* NAVD 88 ORTHO HEIGHT -    22.47  (+/-2cm)       73.7   (feet) VERTCON3
 JU3929  ______________________________________________________________________
 JU3929  GEOID HEIGHT    -        -33.281 (meters)                     GEOID18
 JU3929  LAPLACE CORR    -         -1.17  (seconds)                    DEFLEC18
 JU3929  HORZ ORDER      -  SECOND
 JU3929  VERT ORDER      -  THIRD ? (See Below)
 JU3929
 JU3929.The horizontal coordinates were established by classical geodetic methods
 JU3929.and adjusted by the National Geodetic Survey in January 1992.
 JU3929
 JU3929.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3929.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3929
 JU3929.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3929.GEOID18 height accuracy estimate available here.
 JU3929
 JU3929.The vertical order pertains to the NGVD 29 superseded value.
 JU3929
 JU3929.Click photographs - Photos may exist for this station.
 JU3929
 JU3929.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3929
 JU3929. The following values were computed from the NAD 83(1991) position.
 JU3929
 JU3929;                    North         East     Units Scale Factor Converg.
 JU3929;SPC MD       -   207,653.376   495,302.440   MT  1.00001539   +0 41 44.7
 JU3929;SPC MD       -   681,276.12  1,625,004.76   sFT  1.00001539   +0 41 44.7
 JU3929;UTM  18      - 4,376,202.270   423,385.608   MT  0.99967227   -0 34 02.9
 JU3929
 JU3929!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3929!SPC MD       -   1.00000170  x   1.00001539  =   1.00001709
 JU3929!UTM  18      -   1.00000170  x   0.99967227  =   0.99967397
 JU3929
 JU3929:                Primary Azimuth Mark                     Grid Az
 JU3929:SPC MD       -  RICHARDSON                               031 25 48.1
 JU3929:UTM  18      -  RICHARDSON                               032 41 35.7
 JU3929
 JU3929_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2338576202(NAD 83)
 JU3929
 JU3929|---------------------------------------------------------------------|
 JU3929| PID    Reference Object                     Distance      Geod. Az  |
 JU3929|                                                           dddmmss.s |
 JU3929| JU3892 RICHARDSON                          APPROX. 4.3 KM 0320732.8 |
 JU3929| CB1325 CAUFIEL AZ MK                                      0712212.0 |
 JU3929| JU3882 CHESAPEAKE C BRI LT NMOST DRAW      APPROX. 6.9 KM 0924521.9 |
 JU3929| CB1327 CAUFIEL RM 2                         50.807 METERS 25805     |
 JU3929| CB1326 CAUFIEL RM 1                         33.391 METERS 35830     |
 JU3929|---------------------------------------------------------------------|
 JU3929
 JU3929                          SUPERSEDED SURVEY CONTROL
 JU3929
 JU3929  NAD 83(1986)-  39 31 55.41903(N)    075 53 29.35513(W) AD(       ) 2
 JU3929  NAD 27      -  39 31 55.02400(N)    075 53 30.58000(W) AD(       ) 2
 JU3929  NGVD 29              22.70   (m)           74.5    (f) LEVELING    3  
 JU3929
 JU3929.Superseded values are not recommended for survey control.
 JU3929
 JU3929.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3929.See file dsdata.pdf to determine how the superseded data were derived.
 JU3929
 JU3929_MARKER: DS = TRIANGULATION STATION DISK
 JU3929_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3929_STAMPING: CAUFIEL 1934
 JU3929_MARK LOGO: CGS
 JU3929_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3929+STABILITY: SURFACE MOTION
 JU3929_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3929+SATELLITE: SATELLITE OBSERVATIONS - January 01, 2017
 JU3929
 JU3929  HISTORY     - Date     Condition        Report By
 JU3929  HISTORY     - 1934     MONUMENTED       CGS
 JU3929  HISTORY     - 1937     GOOD             CGS
 JU3929  HISTORY     - 1953     SEE DESCRIPTION  USGS
 JU3929  HISTORY     - 19910216 MARK NOT FOUND   USPSQD
 JU3929  HISTORY     - 20170101 GOOD             NGS
 JU3929
 JU3929                          STATION DESCRIPTION
 JU3929
 JU3929'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 JU3929'THE STATION IS ON THE PROPERTY OF MR. DE WITT CAUFIEL AND
 JU3929'TENANTED BY MRS. LAWRENCE COLBOURNE, APPROXIMATELY 200 YARDS S
 JU3929'OF A LARGE WHITE BARN, APPROXIMATELY 100 YARDS N OF A SMALL BARN,
 JU3929'40 FEET NE OF THE CENTER LINE OF A FARM ROAD AT A CURVE, AND 19
 JU3929'FEET SE OF THE CENTER OF A 30-INCH CEDAR STUMP.  THE MARK
 JU3929'PROJECTS 6 INCHES ABOVE THE GROUND AND IS STAMPED CAUFIEL 1934.
 JU3929'
 JU3929'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE
 JU3929'DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 JU3929'
 JU3929'REFERENCE MARK NO.1 IS 109.55 FEET N OF THE STATION, AND 1 FOOT
 JU3929'SE OF A FENCE LINE.  THE MARK PROJECTS 6 INCHES ABOVE GROUND AND
 JU3929'IS STAMPED CAUFIEL NO.1 1934.  REFERENCE MARK NO.2 IS 166.69 FEET
 JU3929'NW OF THE STATION, AT THE SW CORNER OF A CULTIVATED FIELD, 46 FEET
 JU3929'SE OF A 12-INCH WALNUT TREE, AND 24 FEET NNE OF AN E-W DIRT
 JU3929'ROAD.  MARK PROJECTS 6 INCHES ABOVE GROUND, STAMPED CAUFIEL NO.2
 JU3929'1934.  AZIMUTH MARK IS 550 PACES NE OF THE STATION, AT NE
 JU3929'CORNER OF A PASTURE, 6 PACES W OF BANK OF ELK RIVER, AND 1 PACE SW
 JU3929'OF FENCE CORNER.  MARK PROJECTS 6 INCHES ABOVE GROUND AND IS
 JU3929'STAMPED CAUFIEL AZ. MK. 1934.
 JU3929'
 JU3929'TO REACH THE STATION FROM ELKTON, AT THE INTERSECTION OF
 JU3929'U.S. HIGHWAY 213 AND U.S. HIGHWAY 40 (AT TRAFFIC LIGHT) GO W ON
 JU3929'U.S. HIGHWAY 40 FOR ABOUT 0.4 MILE TO THE INTERSECTION OF MAIN
 JU3929'STREET AND LANDING LANE (ESSO SERVICE STATION AND ROUGH STONE
 JU3929'BUILDING IN SW ANGLE) TURN LEFT ON LANDING LANE AND GO 0.5 MILE
 JU3929'TO A T-ROAD RIGHT, (OPPOSITE POLE 3016) TURN RIGHT ON THE T-ROAD
 JU3929'AND FOLLOW A GRAVEL AND DIRT ROAD FOR 5.9 MILES TO A 36-INCH
 JU3929'CHERRY TREE ON THE RIGHT AND POLE 3194, TURN LEFT ON FARM ROAD
 JU3929'BETWEEN TWO BOARD FENCE LINES AND GO ABOUT 0.2 MILE TO A
 JU3929'CURVE TO THE RIGHT (S) AND THE STATION.  THIS IS A
 JU3929'SECOND-ORDER STATION.
 JU3929'
 JU3929'A 90-FOOT TOWER WILL CLEAR ALL LINES OBSERVED.
 JU3929
 JU3929                          STATION RECOVERY (1937)
 JU3929
 JU3929'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU3929'THE STATION AND AZIMUTH MARKS WERE RECOVERED AS DESCRIBED IN GOOD
 JU3929'CONDITION.
 JU3929'
 JU3929'THE PRESENT DESCRIPTION IS ADEQUATE.  A SIGNAL POLE WAS BUILT
 JU3929'OVER THE STATION AND AZIMUTH MARK FOR CONNECTING WITH THE
 JU3929'U.S. ENGINEERS TRIANGULATION.
 JU3929
 JU3929                          STATION RECOVERY (1953)
 JU3929
 JU3929'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JU3929'STATION DESTROYED.  TOP OF THE CONCRETE MARKER HAS BEEN KNOCKED
 JU3929'OFF.  REFERENCE MARK 1 WAS FOUND IN GOOD SHAPE.
 JU3929
 JU3929                          STATION RECOVERY (1991)
 JU3929
 JU3929'RECOVERY NOTE BY US POWER SQUADRON 1991 (ECH)
 JU3929'MARK NOT FOUND.
 JU3929
 JU3929                          STATION RECOVERY (2017)
 JU3929
 JU3929'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (NAZ)
 JU3929'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3503 ***********************************************************************
 JU3503  DESIGNATION -  CAUSE
 JU3503  PID         -  JU3503
 JU3503  STATE/COUNTY-  MD/QUEEN ANNES
 JU3503  COUNTRY     -  US
 JU3503  USGS QUAD   -  CHURCH HILL (2017)
 JU3503
 JU3503                         *CURRENT SURVEY CONTROL
 JU3503  ______________________________________________________________________
 JU3503* NAD 83(1991) POSITION- 39 14 34.48855(N) 075 55 24.47096(W)   ADJUSTED
 JU3503* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3503  ______________________________________________________________________
 JU3503  GEOID HEIGHT    -        -33.567 (meters)                     GEOID18
 JU3503  LAPLACE CORR    -         -2.47  (seconds)                    DEFLEC18
 JU3503  HORZ ORDER      -  THIRD
 JU3503
 JU3503.The horizontal coordinates were established by classical geodetic methods
 JU3503.and adjusted by the National Geodetic Survey in January 1992.
 JU3503
 JU3503.The orthometric height was scaled from a topographic map.
 JU3503
 JU3503.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3503.GEOID18 height accuracy estimate available here.
 JU3503
 JU3503.Click photographs - Photos may exist for this station.
 JU3503
 JU3503.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3503
 JU3503. The following values were computed from the NAD 83(1991) position.
 JU3503
 JU3503;                    North         East     Units Scale Factor Converg.
 JU3503;SPC MD       -   175,520.808   492,931.807   MT  0.99997033   +0 40 32.4
 JU3503;SPC MD       -   575,854.52  1,617,227.10   sFT  0.99997033   +0 40 32.4
 JU3503;UTM  18      - 4,344,139.804   420,309.064   MT  0.99967819   -0 35 03.2
 JU3503
 JU3503!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3503!SPC MD       -   1.00000515  x   0.99997033  =   0.99997548
 JU3503!UTM  18      -   1.00000515  x   0.99967819  =   0.99968334
 JU3503
 JU3503:                Primary Azimuth Mark                     Grid Az
 JU3503:SPC MD       -  SUTTON                                   242 26 37.8
 JU3503:UTM  18      -  SUTTON                                   243 42 13.4
 JU3503
 JU3503_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2030944139(NAD 83)
 JU3503
 JU3503|---------------------------------------------------------------------|
 JU3503| PID    Reference Object                     Distance      Geod. Az  |
 JU3503|                                                           dddmmss.s |
 JU3503| JU3502 SNOW                                487.013 METERS 0602932.8 |
 JU3503| JU3500 SUTTON                              APPROX. 1.3 KM 2430710.2 |
 JU3503| JV4991 CHESTERTOWN M P CHURCH SPIRE        APPROX.13.1 KM 2535832.2 |
 JU3503| JU3499 CAN                                 318.787 METERS 33434     |
 JU3503|---------------------------------------------------------------------|
 JU3503
 JU3503                          SUPERSEDED SURVEY CONTROL
 JU3503
 JU3503  NAD 83(1986)-  39 14 34.47798(N)    075 55 24.48822(W) AD(       ) 3
 JU3503  NAD 27      -  39 14 34.06900(N)    075 55 25.69700(W) AD(       ) 3
 JU3503  USSD        -  39 14 34.56200(N)    075 55 25.40200(W) AD(       ) 3
 JU3503
 JU3503.Superseded values are not recommended for survey control.
 JU3503
 JU3503.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3503.See file dsdata.pdf to determine how the superseded data were derived.
 JU3503
 JU3503_MARKER: N = NAIL
 JU3503_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JU3503_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3503
 JU3503  HISTORY     - Date     Condition        Report By
 JU3503  HISTORY     - 1910     MONUMENTED       CGS
 JU3503  HISTORY     - 1938     MARK NOT FOUND   CGS
 JU3503
 JU3503                          STATION DESCRIPTION
 JU3503
 JU3503'DESCRIBED BY COAST AND GEODETIC SURVEY 1910 (SF)
 JU3503'STATION IS ON THE SOUTHERN SIDE OF CHESTER RIVER, ON THE UPRIVER
 JU3503'SIDE AND 250 METERS FROM THE N END OF THE CAUSEWAY LEADING TO THE
 JU3503'DRAWBRIDGE ACROSS THE CHESTER RIVER AT CRUMPTON, MARYLAND, AND 2
 JU3503'METERS FROM HIGH-WATER MARK.
 JU3503'
 JU3503'THE STATION IS MARKED BY A BURIED GLASS BOTTLE AND A NAIL IN
 JU3503'CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE TOP OF
 JU3503'A DRAINTILE AT THE SURFACE OF THE GROUND.
 JU3503'
 JU3503'REFERENCE MARK NO.1 IS NAIL IN CENTER OF TRIANGLE CUT IN A LARGE
 JU3503'WILLOW TREE ON THE SOUTHERN SIDE OF CAUSEWAY, IT IS 12.06 METERS
 JU3503'(39.6 FEET) FROM THE STATION S 13 DEG 18 MIN E.  REFERENCE
 JU3503'MARK NO.2 IS A NAIL IN CENTER OF A PARALLELOGRAM CUT IN A LARGE
 JU3503'WILLOW TREE ON SOUTHERN SIDE OF CAUSEWAY, IT IS 9.35 METERS
 JU3503'(30.68 FEET) FROM THE STATION S 44 DEG 06 MIN W.
 JU3503'REFERENCE MARK NO.3 IS A NAIL IN THE JUNCTION OF THE VERTICES
 JU3503'OF TWO TRIANGLES, ONE INVERTED ABOVE THE OTHER CUT IN A LARGE
 JU3503'WILLOW TREE ON THE SOUTHERN SIDE OF THE CAUSEWAY, IT IS 10.54
 JU3503'METERS (34.6 FEET) FROM THE STATION S 79 DEG 24 MIN W.
 JU3503
 JU3503                          STATION RECOVERY (1938)
 JU3503
 JU3503'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3503'STATION WAS NOT FOUND, IT HAS EITHER BEEN REMOVED OR WAS COVERED UP
 JU3503'WHEN CAUSEWAY WAS REGRADED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1139 ***********************************************************************
 JU1139  DESIGNATION -  CAYOTS 2 RM 4
 JU1139  PID         -  JU1139
 JU1139  STATE/COUNTY-  MD/CECIL
 JU1139  COUNTRY     -  US
 JU1139  USGS QUAD   -  CECILTON (2016)
 JU1139
 JU1139                         *CURRENT SURVEY CONTROL
 JU1139  ______________________________________________________________________
 JU1139* NAD 83(1986) POSITION- 39 29 10.75   (N) 075 50 51.56   (W)   HD_HELD1
 JU1139* NAVD 88 ORTHO HEIGHT -    24.331 (meters)       79.83  (feet) ADJUSTED
 JU1139  ______________________________________________________________________
 JU1139  GEOID HEIGHT    -        -33.386 (meters)                     GEOID18
 JU1139  DYNAMIC HEIGHT  -         24.319 (meters)       79.79  (feet) COMP
 JU1139  MODELED GRAVITY -    980,123.9   (mgal)                       NAVD 88
 JU1139
 JU1139  VERT ORDER      -  FIRST     CLASS II
 JU1139
 JU1139.The horizontal coordinates were determined by differentially corrected
 JU1139.hand held GPS observations or other comparable positioning techniques
 JU1139.and have an estimated accuracy of +/- 3 meters.
 JU1139
 JU1139.The orthometric height was determined by differential leveling and
 JU1139.adjusted by the NATIONAL GEODETIC SURVEY
 JU1139.in June 1991.
 JU1139
 JU1139.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1139.GEOID18 height accuracy estimate available here.
 JU1139
 JU1139.Click photographs - Photos may exist for this station.
 JU1139
 JU1139.The dynamic height is computed by dividing the NAVD 88
 JU1139.geopotential number by the normal gravity value computed on the
 JU1139.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1139.degrees latitude (g = 980.6199 gals.).
 JU1139
 JU1139.The modeled gravity was interpolated from observed gravity values.
 JU1139
 JU1139;                    North         East    Units  Estimated Accuracy
 JU1139;SPC MD       -   202,621.7     499,134.5     MT  (+/- 3 meters HH1 GPS) 
 JU1139
 JU1139_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2710471089(NAD 83)
 JU1139
 JU1139                          SUPERSEDED SURVEY CONTROL
 JU1139
 JU1139  NGVD 29 (11/26/84)   24.573  (m)           80.62   (f) ADJUSTED    1 2
 JU1139
 JU1139.Superseded values are not recommended for survey control.
 JU1139
 JU1139.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1139.See file dsdata.pdf to determine how the superseded data were derived.
 JU1139
 JU1139_MARKER: DR = REFERENCE MARK DISK
 JU1139_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1139_STAMPING: CAYOTS 2 NO 4 1951
 JU1139_MARK LOGO: CGS
 JU1139_PROJECTION: RECESSED 6 CENTIMETERS
 JU1139_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1139+STABILITY: SURFACE MOTION
 JU1139
 JU1139  HISTORY     - Date     Condition        Report By
 JU1139  HISTORY     - 1951     MONUMENTED       CGS
 JU1139  HISTORY     - 1971     GOOD             NGS
 JU1139  HISTORY     - 19881117 GOOD             USPSQD
 JU1139  HISTORY     - 20251015 GOOD             PROFLN
 JU1139
 JU1139                          STATION DESCRIPTION
 JU1139
 JU1139'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1139'3 MI SW FROM CHESAPEAKE CITY.
 JU1139'ABOUT 3.05 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1139'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1139'DELAWARE CANAL AT CHESAPEAKE CITY, 128 FEET EAST OF THE CENTER
 JU1139'LINE OF U.S. HIGHWAY 213, 33 FEET SOUTH OF THE CENTER LINE OF
 JU1139'STATE HIGHWAY 310, 32 FEET EAST OF THE CENTER LINE OF A DRIVEWAY
 JU1139'TO THE H.V. WILLIAMS HOUSE, 136.0 FEET NORTH-NORTHWEST OF THE
 JU1139'NORTHWEST CORNER OF THE PORCH ON THE HOUSE, 18 FEET SOUTHEAST OF
 JU1139'A 14-INCH WALNUT TREE, 189.5 FEET EAST AND ACROSS THE U.S.
 JU1139'HIGHWAY FROM CAYOTS 2 RM 5, 165.6 FEET SOUTHEAST AND ACROSS STATE
 JU1139'HIGHWAY 310 FROM TRIANGULATION STATION CAYOTS, ABOUT 1 FOOT ABOVE
 JU1139'THE LEVEL OF THE STATE HIGHWAY, AND SET IN THE TOP OF A CONCRETE
 JU1139'POST THAT IS 1 INCH BELOW THE GROUND.
 JU1139
 JU1139                          STATION RECOVERY (1988)
 JU1139
 JU1139'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1139'RECOVERED IN GOOD CONDITION.
 JU1139
 JU1139                          STATION RECOVERY (2025)
 JU1139
 JU1139'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1139'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1138 ***********************************************************************
 JU1138  DESIGNATION -  CAYOTS 2 RM 5
 JU1138  PID         -  JU1138
 JU1138  STATE/COUNTY-  MD/CECIL
 JU1138  COUNTRY     -  US
 JU1138  USGS QUAD   -  CECILTON (2016)
 JU1138
 JU1138                         *CURRENT SURVEY CONTROL
 JU1138  ______________________________________________________________________
 JU1138* NAD 83(1986) POSITION- 39 29 10.34   (N) 075 50 53.96   (W)   HD_HELD1
 JU1138* NAVD 88 ORTHO HEIGHT -    25.092 (meters)       82.32  (feet) ADJUSTED
 JU1138  ______________________________________________________________________
 JU1138  GEOID HEIGHT    -        -33.386 (meters)                     GEOID18
 JU1138  DYNAMIC HEIGHT  -         25.079 (meters)       82.28  (feet) COMP
 JU1138  MODELED GRAVITY -    980,123.9   (mgal)                       NAVD 88
 JU1138
 JU1138  VERT ORDER      -  FIRST     CLASS I
 JU1138
 JU1138.The horizontal coordinates were determined by differentially corrected
 JU1138.hand held GPS observations or other comparable positioning techniques
 JU1138.and have an estimated accuracy of +/- 3 meters.
 JU1138
 JU1138.The orthometric height was determined by differential leveling and
 JU1138.adjusted by the NATIONAL GEODETIC SURVEY
 JU1138.in June 1991.
 JU1138
 JU1138.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1138.GEOID18 height accuracy estimate available here.
 JU1138
 JU1138.Click photographs - Photos may exist for this station.
 JU1138
 JU1138.The dynamic height is computed by dividing the NAVD 88
 JU1138.geopotential number by the normal gravity value computed on the
 JU1138.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1138.degrees latitude (g = 980.6199 gals.).
 JU1138
 JU1138.The modeled gravity was interpolated from observed gravity values.
 JU1138
 JU1138;                    North         East    Units  Estimated Accuracy
 JU1138;SPC MD       -   202,608.4     499,077.3     MT  (+/- 3 meters HH1 GPS) 
 JU1138
 JU1138_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2704771077(NAD 83)
 JU1138
 JU1138                          SUPERSEDED SURVEY CONTROL
 JU1138
 JU1138  NGVD 29 (11/26/84)   25.334  (m)           83.12   (f) ADJUSTED    1 1
 JU1138
 JU1138.Superseded values are not recommended for survey control.
 JU1138
 JU1138.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1138.See file dsdata.pdf to determine how the superseded data were derived.
 JU1138
 JU1138_MARKER: DR = REFERENCE MARK DISK
 JU1138_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1138_STAMPING: CAYOTS 2 NO 5 1951
 JU1138_MARK LOGO: CGS
 JU1138_PROJECTION: FLUSH
 JU1138_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1138+STABILITY: SURFACE MOTION
 JU1138_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1138+SATELLITE: SATELLITE OBSERVATIONS - October 15, 2025
 JU1138
 JU1138  HISTORY     - Date     Condition        Report By
 JU1138  HISTORY     - 1951     MONUMENTED       CGS
 JU1138  HISTORY     - 1971     GOOD             NGS
 JU1138  HISTORY     - 19881117 GOOD             USPSQD
 JU1138  HISTORY     - 20030316 GOOD             USPSQD
 JU1138  HISTORY     - 20140311 GOOD             ARCSHE
 JU1138  HISTORY     - 20191004 GOOD             MDSHA
 JU1138  HISTORY     - 20251015 GOOD             PROFLN
 JU1138
 JU1138                          STATION DESCRIPTION
 JU1138
 JU1138'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1138'3 MI SW FROM CHESAPEAKE CITY.
 JU1138'ABOUT 3.05 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1138'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1138'DELAWARE CANAL AT CHESAPEAKE CITY, 50.9 FEET EAST-NORTHEAST OF THE
 JU1138'EAST CORNER OF A CONCRETE BLOCK BUILDING WHICH HOUSES A
 JU1138'RESTAURANT, 61 1/2 FEET SOUTHWEST OF THE CENTER LINE OF U.S.
 JU1138'HIGHWAY 213, 55 FEET SOUTHWEST OF THE CENTER LINE OF TOWN POINT
 JU1138'ROAD, 18 FEET NORTHWEST OF TELEPHONE POLE NUMBER 93, 14 FEET
 JU1138'SOUTHEAST OF POWER POLE NUMBER 3568, ABOUT 1 FOOT ABOVE THE
 JU1138'LEVEL OF THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST THAT
 JU1138'IS LEVEL WITH THE GROUND.  NOTE-- THIS MARK IS ALSO 116.6 FEET
 JU1138'SOUTHWEST AND ACROSS TOWN POINT ROAD FROM TRIANGULATION STATION
 JU1138'CAYOTS.  NOTE-- THIS MARK IS ON THE EDGE OF THE PARKING LOT FOR
 JU1138'THE RESTAURANT.
 JU1138
 JU1138                          STATION RECOVERY (1988)
 JU1138
 JU1138'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1138'RECOVERED IN GOOD CONDITION.
 JU1138
 JU1138                          STATION RECOVERY (2003)
 JU1138
 JU1138'RECOVERY NOTE BY US POWER SQUADRON 2003 (DET)
 JU1138'CHANGE POLE NUMBER TO NUMBER 40099.
 JU1138
 JU1138                          STATION RECOVERY (2014)
 JU1138
 JU1138'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JU1138'RECOVERED IN GOOD CONDITION.
 JU1138
 JU1138                          STATION RECOVERY (2019)
 JU1138
 JU1138'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (WAC)
 JU1138'THE MARK IS SITUATED IN GRASS ISLAND AT SOUTHWEST INTERSECTION OF MD
 JU1138'213 AND TOWN POINT ROAD AT CAYOTS CORNER.  MARK IS LOCATED 14.0 FT
 JU1138'(4.3 M) SOUTHEAST OF CONECTIV POWER POLE NO. 40099/34005, 3.2 FT (1.0
 JU1138'M) SOUTH OF FIRST GUY ANCHOR TO POWER POLE, 24.0 FT (7.3 M) SOUTHWEST
 JU1138'OF CENTER OF TRAFFIC SIGNAL-LAMP POLE, 50.9 FT (15.5 M) FROM NORTHEAST
 JU1138'CORNER OF BLOCK BUILDING, 6.0 FT (1.8 M) NORTH OF PARKING LOT EDGE,
 JU1138'56.0 FT (17.1 M) SOUTHWEST OF THE CENTERLINE OF TOWN POINT ROAD AND
 JU1138'61.8 FT (18.8 M) WEST OF THE CENTERLINE OF MD ROUTE 213.
 JU1138
 JU1138                          STATION RECOVERY (2025)
 JU1138
 JU1138'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1138'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1137 ***********************************************************************
 JU1137  DESIGNATION -  CAYOTS RESET
 JU1137  PID         -  JU1137
 JU1137  STATE/COUNTY-  MD/CECIL
 JU1137  COUNTRY     -  US
 JU1137  USGS QUAD   -  CECILTON (2016)
 JU1137
 JU1137                         *CURRENT SURVEY CONTROL
 JU1137  ______________________________________________________________________
 JU1137* NAD 83(2011) POSITION- 39 29 11.43269(N) 075 50 53.48414(W)   ADJUSTED
 JU1137* NAD 83(2011) ELLIP HT-    -8.509 (meters)        (06/27/12)   ADJUSTED
 JU1137* NAD 83(2011) EPOCH   -  2010.00
 JU1137* NAVD 88 ORTHO HEIGHT -    24.868 (meters)       81.59  (feet) ADJUSTED
 JU1137  ______________________________________________________________________
 JU1137  GEOID HEIGHT    -        -33.386 (meters)                     GEOID18
 JU1137  NAD 83(2011) X  -  1,205,137.834 (meters)                     COMP
 JU1137  NAD 83(2011) Y  - -4,779,558.715 (meters)                     COMP
 JU1137  NAD 83(2011) Z  -  4,034,142.235 (meters)                     COMP
 JU1137  LAPLACE CORR    -         -1.26  (seconds)                    DEFLEC18
 JU1137  DYNAMIC HEIGHT  -         24.855 (meters)       81.55  (feet) COMP
 JU1137  MODELED GRAVITY -    980,123.9   (mgal)                       NAVD 88
 JU1137
 JU1137  VERT ORDER      -  FIRST     CLASS I
 JU1137
 JU1137  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU1137  Standards:
 JU1137         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU1137            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU1137  -------------------------------------------------------------------
 JU1137  NETWORK    0.48   1.02           0.22   0.17   0.52     -0.02325695
 JU1137  -------------------------------------------------------------------
 JU1137  Click here for local accuracies and other accuracy information.
 JU1137
 JU1137.The horizontal coordinates were established by GPS observations
 JU1137.and adjusted by the National Geodetic Survey in June 2012.
 JU1137
 JU1137.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU1137.been affixed to the stable North American tectonic plate. See 
 JU1137.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU1137
 JU1137.The horizontal coordinates are valid at the epoch date displayed above
 JU1137.which is a decimal equivalence of Year/Month/Day.
 JU1137
 JU1137.The orthometric height was determined by differential leveling and
 JU1137.adjusted by the NATIONAL GEODETIC SURVEY
 JU1137.in June 1991.
 JU1137
 JU1137.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1137.GEOID18 height accuracy estimate available here.
 JU1137
 JU1137.Click photographs - Photos may exist for this station.
 JU1137
 JU1137.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU1137
 JU1137.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU1137
 JU1137.The ellipsoidal height was determined by GPS observations
 JU1137.and is referenced to NAD 83.
 JU1137
 JU1137.The dynamic height is computed by dividing the NAVD 88
 JU1137.geopotential number by the normal gravity value computed on the
 JU1137.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1137.degrees latitude (g = 980.6199 gals.).
 JU1137
 JU1137.The modeled gravity was interpolated from observed gravity values.
 JU1137
 JU1137. The following values were computed from the NAD 83(2011) position.
 JU1137
 JU1137;                    North         East     Units Scale Factor Converg.
 JU1137;SPC MD       -   202,642.190   499,088.287   MT  1.00000659   +0 43 22.5
 JU1137;SPC MD       -   664,835.25  1,637,425.49   sFT  1.00000659   +0 43 22.5
 JU1137;UTM  18      - 4,371,110.613   427,058.845   MT  0.99966550   -0 32 21.8
 JU1137
 JU1137!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU1137!SPC MD       -   1.00000133  x   1.00000659  =   1.00000792
 JU1137!UTM  18      -   1.00000133  x   0.99966550  =   0.99966683
 JU1137
 JU1137:                Primary Azimuth Mark                     Grid Az
 JU1137:SPC MD       -  MANLOVE                                  166 22 17.7
 JU1137:UTM  18      -  MANLOVE                                  167 38 02.0
 JU1137
 JU1137_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2705871110(NAD 83)
 JU1137
 JU1137|---------------------------------------------------------------------|
 JU1137| PID    Reference Object                     Distance      Geod. Az  |
 JU1137|                                                           dddmmss.s |
 JU1137| JU3837 WASHINGTON NY AWY BCN 64            APPROX.18.8 KM 0255642.1 |
 JU1137| JU3881 CHESAPEAKE C BRI N COUNTERPOIS      APPROX. 5.7 KM 0334004.9 |
 JU1137| JU3807 MIDDLE BRIDGE N COUNTERPOISE        APPROX.12.2 KM 0592335.7 |
 JU1137| JU3806 MIDDLE BRIDGE S COUNTERPOISE        APPROX.12.2 KM 0594141.2 |
 JU1137| JU3798 EAST BRIDGE NORTH COUNTERPOISE      APPROX.14.3 KM 0614019.8 |
 JU1137| JU3801 EAST BRIDGE SOUTH COUNTERPOISE      APPROX.14.2 KM 0615308.5 |
 JU1137| JU2057 CAYOTS RM 1                          20.940 METERS 11447     |
 JU1137| JU1139 CAYOTS 2 RM 4                        50.470 METERS 11448     |
 JU1137| JU3438 TOWNSEND WATER TANK                 APPROX.17.0 KM 1272310.4 |
 JU1137| JU3509 MANLOVE                             APPROX. 5.7 KM 1670540.2 |
 JU1137| JU2056 CAYOTS RM 2                          27.551 METERS 19837     |
 JU1137| JU1138 CAYOTS 2 RM 5                        35.550 METERS 19837     |
 JU1137| CA2733 CAYOTS 1934 AZ MK                                  3045159.3 |
 JU1137| CB1331 CAYOTS RM 6                          11.600 METERS 35726     |
 JU1137|---------------------------------------------------------------------|
 JU1137
 JU1137                          SUPERSEDED SURVEY CONTROL
 JU1137
 JU1137  NAD 83(2007)-  39 29 11.43279(N)    075 50 53.48478(W) AD(2002.00) 1
 JU1137  ELLIP H (02/23/12)   -8.471  (m)                       GP(2002.00) 4 1
 JU1137  NAD 83(1991)-  39 29 11.43193(N)    075 50 53.48655(W) AD(       ) 2
 JU1137  NAD 83(1986)-  39 29 11.42451(N)    075 50 53.49446(W) AD(       ) 2
 JU1137  NAD 27      -  39 29 11.02800(N)    075 50 54.72500(W) AD(       ) 2
 JU1137  NAVD 88              24.87   (m)           81.6    (f) LEVELING    3  
 JU1137  NGVD 29              25.11   (m)           82.4    (f) LEVELING    3  
 JU1137  NGVD 29 (11/26/84)   25.110  (m)           82.38   (f) ADJUSTED    1 1
 JU1137
 JU1137.Superseded values are not recommended for survey control.
 JU1137
 JU1137.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1137.See file dsdata.pdf to determine how the superseded data were derived.
 JU1137
 JU1137_MARKER: DS = TRIANGULATION STATION DISK
 JU1137_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1137_STAMPING: CAYOTS 1934 1964
 JU1137_MARK LOGO: CGS
 JU1137_PROJECTION: RECESSED 61 CENTIMETERS
 JU1137_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1137+STABILITY: SURFACE MOTION
 JU1137_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1137+SATELLITE: SATELLITE OBSERVATIONS - October 15, 2025
 JU1137
 JU1137  HISTORY     - Date     Condition        Report By
 JU1137  HISTORY     - 1964     MONUMENTED       CGS
 JU1137  HISTORY     - 1971     GOOD             NGS
 JU1137  HISTORY     - 1971     GOOD             NGS
 JU1137  HISTORY     - 19881117 MARK NOT FOUND   USPSQD
 JU1137  HISTORY     - 20090309 GOOD             GWS
 JU1137  HISTORY     - 20140311 GOOD             ARCSHE
 JU1137  HISTORY     - 20251015 SEE DESCRIPTION  PROFLN
 JU1137
 JU1137                          STATION DESCRIPTION
 JU1137
 JU1137'DESCRIBED BY COAST AND GEODETIC SURVEY 1964 (CFO)
 JU1137'THE SUBSURFACE MARK WAS RECOVERED IN GOOD CONDITION.
 JU1137'
 JU1137'REFERENCE MARKS 4 AND 5 WERE RECOVERED IN GOOD CONDITION, THESE MARKS
 JU1137'REPLACE OLD REFERENCE MARKS 1 AND 2.
 JU1137'
 JU1137'THE AZIMUTH MARK HAS BEEN DISTURBED AND WAS OUT OF POSITION.  IT IS
 JU1137'BELIEVED THAT A FARMER HAS MOVED IT CLOSER TO THE ROAD TO GET IT OUT
 JU1137'OF THE FIELD.  THE MONUMENT WAS FOUND LOOSE IN THE GROUND AND
 JU1137'PROJECTING ABOUT 16 INCHES.  THE ARROW WAS POINTING IN THE
 JU1137'OPPOSITE DIRECTION FROM THE STATION.  AN ANGLE CHECK WAS MADE
 JU1137'WHICH PROVED THAT IT WAS OUT OF POSITION.  THE MARK WAS
 JU1137'DESTROYED AT THIS TIME.
 JU1137'
 JU1137'A NEW SURFACE STATION MARK AND A NEW REFERENCE MARK NO 6 WAS SET AT
 JU1137'THIS TIME.
 JU1137'
 JU1137'DUE TO CHANGES IN OBJECTS USED AS REFERENCE POINTS THE PREVIOUS
 JU1137'DESCRIPTIONS ARE INADEQUATE FOR PRESENT DAY RECOVERY.
 JU1137'
 JU1137'A COMPLETE NEW DESCRIPTION FOLLOWS--
 JU1137'
 JU1137'THE STATION IS LOCATED 3.05 MILES SOUTH OF THE SOUTH END OF THE
 JU1137'CHESAPEAKE AND DELAWARE CANAL BRIDGE AT CHESAPEAKE CITY, AT THE
 JU1137'JUNCTION OF U.S. HIGHWAY 213 WITH STATE HIGHWAY 310, IN THE
 JU1137'NORTHWEST ANGLE OF THE INTERSECTION, ON PROPERTY OWNED BY THE STATE.
 JU1137'IT IS 40.5 FEET WEST OF THE CENTERLINE OF U.S. HIGHWAY 213, 62
 JU1137'FEET NORTH OF THE CENTERLINE OF STATE HIGHWAY 310, 25 FEET NE OF
 JU1137'TELEPHONE POLE NO 92 AND 38 FEET SOUTH OF A STEEL WITNESS
 JU1137'POST.  THE MONUMENT IS FLUSH WITH THE GROUND AND THE DISK IS
 JU1137'STAMPED CAYOTS 1934-1964.
 JU1137'
 JU1137'REFERENCE MARK NO 4 IS LOCATED IN THE SE ANGLE OF THE INTERSECTION,
 JU1137'18 FEET SE OF A 42-INCH WALNUT TREE, 25.1 FEET NW OF THE NE CORNER
 JU1137'OF A TWO STORIED FRAME HOUSE, 25 FEET NE OF THE NW CORNER OF THE
 JU1137'HOUSE AND 32.5 FEET S OF THE CENTERLINE OF STATE HIGHWAY 310.  THE
 JU1137'DISK IS SET IN THE TOP OF A ROUND CONCRETE POST ABOUT 1-1/2 FEET
 JU1137'IN DIAMETER AND IT IS ABOUT 2 INCHES UNDERGROUND.  THE DISK
 JU1137'IS ERRONEOUSLY STAMPED CAYOTS 2 NO 4 1951).
 JU1137'
 JU1137'REFERENCE MARK NO 5 IS IN THE SW ANGLE OF THE INTERSECTION, 60
 JU1137'FEET W OF THE CENTERLINE OF HIGHWAY 213, 53 FEET S OF THE CENTERLINE
 JU1137'OF HIGHWAY 310 AND 13 FEET SE OF POWERLINE POLE NO. 3568.  THE DISK
 JU1137'IS SET IN A ROUND CONCRETE POST ABOUT 1-1/2 FEET IN DIAMETER WHICH
 JU1137'PROJECTS ABOUT 2 INCHES AND THE DISK IS ERRONEOUSLY STAMPED
 JU1137'CAYOTS 2NO 5 1951.
 JU1137'
 JU1137'REFERENCE MARK NO 6 IS IN THE NW ANGLE OF THE INTERSECTION 1.5 FEET
 JU1137'W OF A STEEL WITNESS POST, 50 FEET W OF THE CENTERLINE OF HIGHWAY
 JU1137'213 AND 99 FEET N OF THE CENTERLINE OF HIGHWAY 310.  THE MARK IS
 JU1137'FLUSH WITH THE GROUND AND THE DISK IS STAMPED CAYOTS NO 6 1964.
 JU1137'
 JU1137'HEIGHT OF LIGHT ABOVE STATION MARK 1 METERS.
 JU1137
 JU1137                          STATION RECOVERY (1971)
 JU1137
 JU1137'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 JU1137'THE STATION MARK, STAMPED CAYOTS 1934 1964, RM 4 AND RM 5 WERE
 JU1137'FOUND IN GOOD CONDITION.  RM 3 WAS NOT RECOVERED THIS DATE.
 JU1137'
 JU1137'TO REACH THE STATION MARK FROM THE SOUTHWEST END OF THE U.S. HIGHWAY
 JU1137'213 BRIDGE OVER THE CHESAPEAKE AND DELAWARE CANAL IN CHESAPEAKE
 JU1137'CITY, GO ABOUT 3.05 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 TO THE
 JU1137'INTERSECTION OF STATE HIGHWAY 310 LEADING EAST AND TOWN POINT
 JU1137'ROAD LEADING WEST, 40-1/2 FEET NORTHWEST OF THE CENTER LINE OF
 JU1137'THE U.S.  HIGHWAY, 62 FEET NORTHEAST OF THE CENTER LINE OF TOWN
 JU1137'POINT ROAD, 1.5 FEET SOUTHEAST OF A METAL WITNESS POST, AND SET IN
 JU1137'THE TOP OF A CONCRETE POST THAT IS LEVEL WITH THE GROUND.
 JU1137'
 JU1137'RM 4 IS 165.6 FEET SOUTHEAST AND ACROSS THE U.S. HIGHWAY FROM THE
 JU1137'STATION MARK, 33 FEET SOUTH OF THE CENTER LINE OF STATE HIGHWAY
 JU1137'310, 136.0 FEET NORTH-NORTHWEST OF THE NORTHWEST CORNER OF A PORCH
 JU1137'ON THE H.V. WILLIAMS HOUSE, AND SET IN THE TOP OF A CONCRETE POST
 JU1137'THAT IS 1 INCH BELOW THE SURFACE OF THE GROUND.
 JU1137'
 JU1137'RM 5 IS 116.6 FEET SOUTHWEST AND ACROSS TOWN POINT ROAD FROM THE
 JU1137'STATION MARK, 61-1/2 FEET SOUTHWEST OF THE CENTER LINE OF THE U.S.
 JU1137'HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST THAT IS LEVEL WITH
 JU1137'THE GROUND.
 JU1137'
 JU1137'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3.05 MILES
 JU1137'SOUTHWEST.
 JU1137
 JU1137                          STATION RECOVERY (1971)
 JU1137
 JU1137'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JU1137'3 MI SW FROM CHESAPEAKE CITY.
 JU1137'ABOUT 3.05 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1137'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1137'DELAWARE CANAL AT CHESAPEAKE CITY, 87 FEET NORTH OF THE CENTER OF
 JU1137'THE INTERSECTION OF THE HIGHWAY AND STATE HIGHWAY 310 WHICH LEADS
 JU1137'EAST AND TOWN POINT ROAD WHICH LEADS WEST, 40 1/2 FEET NORTHWEST
 JU1137'OF THE CENTER LINE OF U.S. HIGHWAY 213, 62 FEET NORTHEAST OF
 JU1137'THE CENTER LINE OF TOWN POINT ROAD, 25 FEET EAST OF TELEPHONE POLE
 JU1137'NUMBER 92, 165.6 FEET NORTHWEST AND ACROSS U.S. HIGHWAY 213 FROM
 JU1137'CAYOTS 2 RM 4, 116.6 FEET NORTHEAST AND ACROSS TOWN POINT ROAD FROM
 JU1137'CAYOTS 2 RM 5, 1.5 FEET SOUTHEAST OF A METAL WITNESS POST, ABOUT
 JU1137'1 FOOT BELOW THE LEVEL OF THE U.S. HIGHWAY, AND SET IN THE TOP OF
 JU1137'A CONCRETE POST THAT IS LEVEL WITH THE GROUND.
 JU1137
 JU1137                          STATION RECOVERY (1988)
 JU1137
 JU1137'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1137'MARK NOT FOUND.
 JU1137
 JU1137                          STATION RECOVERY (2009)
 JU1137
 JU1137'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (JMS)
 JU1137'RECOVERED AS DESCRIBED.
 JU1137
 JU1137                          STATION RECOVERY (2014)
 JU1137
 JU1137'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JU1137'RECOVERED IN GOOD CONDITION.
 JU1137
 JU1137                          STATION RECOVERY (2025)
 JU1137
 JU1137'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1137'RECOVERED THE REFERENCE MARKS AS DESCRIBED AND THE SUBSURFACE MARK
 JU1137'ABOUT 2 FT (0.6 M) BELOW GROUND.  PLACED A ROUND VALVE BOX OVER THE
 JU1137'SUBSURFACE MARK.  THE SURFACE MARK WAS REMOVED DURING UTILITY
 JU1137'CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6201 ***********************************************************************
 HV6201  DESIGNATION -  CBA EXPERIMENTAL TWR 5 KENT IS
 HV6201  PID         -  HV6201
 HV6201  STATE/COUNTY-  MD/QUEEN ANNES
 HV6201  COUNTRY     -  US
 HV6201  USGS QUAD   -  KENT ISLAND (2016)
 HV6201
 HV6201                         *CURRENT SURVEY CONTROL
 HV6201  ______________________________________________________________________
 HV6201* NAD 83(1991) POSITION- 38 55 58.52903(N) 076 21 45.68498(W)   ADJUSTED
 HV6201* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6201  ______________________________________________________________________
 HV6201  GEOID HEIGHT    -        -33.622 (meters)                     GEOID18
 HV6201  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 HV6201  HORZ ORDER      -  THIRD
 HV6201
 HV6201.The horizontal coordinates were established by classical geodetic methods
 HV6201.and adjusted by the National Geodetic Survey in January 1992.
 HV6201
 HV6201.The orthometric height was scaled from a topographic map.
 HV6201
 HV6201.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6201.GEOID18 height accuracy estimate available here.
 HV6201
 HV6201.Click photographs - Photos may exist for this station.
 HV6201
 HV6201.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6201
 HV6201. The following values were computed from the NAD 83(1991) position.
 HV6201
 HV6201;                    North         East     Units Scale Factor Converg.
 HV6201;SPC MD       -   140,753.103   455,256.744   MT  0.99995034   +0 23 60.0
 HV6201;SPC MD       -   461,787.47  1,493,621.50   sFT  0.99995034   +0 23 60.0
 HV6201;UTM  18      - 4,310,215.936   381,888.565   MT  0.99977178   -0 51 23.1
 HV6201
 HV6201!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6201!SPC MD       -   1.00000531  x   0.99995034  =   0.99995565
 HV6201!UTM  18      -   1.00000531  x   0.99977178  =   0.99977709
 HV6201
 HV6201_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8188810215(NAD 83)
 HV6201
 HV6201                          SUPERSEDED SURVEY CONTROL
 HV6201
 HV6201  NAD 83(1986)-  38 55 58.52486(N)    076 21 45.69725(W) AD(       ) 3
 HV6201  NAD 27      -  38 55 58.11100(N)    076 21 46.85500(W) AD(       ) 3
 HV6201
 HV6201.Superseded values are not recommended for survey control.
 HV6201
 HV6201.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6201.See file dsdata.pdf to determine how the superseded data were derived.
 HV6201
 HV6201_MARKER: DB = BENCH MARK DISK
 HV6201_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV6201+WITH SETTING: PAVEMENT
 HV6201_SP_SET: SLAB
 HV6201_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6201+STABILITY: SURFACE MOTION
 HV6201
 HV6201  HISTORY     - Date     Condition        Report By
 HV6201  HISTORY     - 1945     MONUMENTED       CGS
 HV6201  HISTORY     - 1960     POOR             CGS
 HV6201  HISTORY     - 20000115 POOR             USPSQD
 HV6201  HISTORY     - 20050612 MARK NOT FOUND   USPSQD
 HV6201
 HV6201                          STATION DESCRIPTION
 HV6201
 HV6201'DESCRIBED BY COAST AND GEODETIC SURVEY 1945 (TBR)
 HV6201'LOCATED ABOUT 1.5 MILES S ALONG STATE HIGHWAY 33 FROM THE JUNCTION
 HV6201'OF STATE HIGHWAY 404 AT MATAPEAKE AND THENCE W ABOUT 1/2 MILE
 HV6201'ALONG A DIRT ROAD TO THE E SHORE OF THE CHESAPEAKE BAY AND THE
 HV6201'TOWER.
 HV6201'
 HV6201'A STANDARD BENCH-MARK DISK, NOT STAMPED, IS SET IN THE NW CORNER
 HV6201'OF A SLAB OF CONCRETE UNDER THE TOWER.  IT IS ABOUT 2 FEET N OF
 HV6201'THE NW LEG OF THE TOWER.  ELEVATION--4.887 FEET.
 HV6201
 HV6201                          STATION RECOVERY (1960)
 HV6201
 HV6201'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6201'THE TOWER HAS BEEN BLOWN DOWN.  THE C AND GS BENCH MARK SET IN
 HV6201'THE CONCRETE BASE IS IN POOR SHAPE, THE BASE HAS SHIFTED DUE TO
 HV6201'EROSION.
 HV6201
 HV6201                          STATION RECOVERY (2000)
 HV6201
 HV6201'RECOVERY NOTE BY US POWER SQUADRON 2000
 HV6201'MARK RECOVERED IN POOR CONDITION.
 HV6201
 HV6201                          STATION RECOVERY (2005)
 HV6201
 HV6201'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HV6201'3.8 MILES S OF US 50 ON MD ROUTE 8 TO CHESAPEAKE ESTATES DRIVE TO BAY
 HV6201'DRIVE TO 104 BAY DRIVE.  THE CONCRETE SLAB IS NOW APPROXIMATELY 2 FEET
 HV6201'UNDER WATER WITH THE FOUR TOWER FOUNDATIONS EXPOSED AT THE WATER
 HV6201'SURFACE.  THE SHORE SIDE OF THE SLAB IS 2 FEET FROM THE RIP RAPPED
 HV6201'SHORELINE.  MAY BE RECOVERABLE AT LOW TIDE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6203 ***********************************************************************
 HV6203  DESIGNATION -  CBA EXPERIMENTAL TWR 4 KENT IS
 HV6203  PID         -  HV6203
 HV6203  STATE/COUNTY-  MD/QUEEN ANNES
 HV6203  COUNTRY     -  US
 HV6203  USGS QUAD   -  KENT ISLAND (2016)
 HV6203
 HV6203                         *CURRENT SURVEY CONTROL
 HV6203  ______________________________________________________________________
 HV6203* NAD 83(1991) POSITION- 38 52 33.85401(N) 076 21 51.03560(W)   ADJUSTED
 HV6203* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6203  ______________________________________________________________________
 HV6203  GEOID HEIGHT    -        -33.751 (meters)                     GEOID18
 HV6203  LAPLACE CORR    -         -4.34  (seconds)                    DEFLEC18
 HV6203  HORZ ORDER      -  THIRD
 HV6203
 HV6203.The horizontal coordinates were established by classical geodetic methods
 HV6203.and adjusted by the National Geodetic Survey in January 1992.
 HV6203
 HV6203.The orthometric height was scaled from a topographic map.
 HV6203
 HV6203.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6203.GEOID18 height accuracy estimate available here.
 HV6203
 HV6203.Click photographs - Photos may exist for this station.
 HV6203
 HV6203.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6203
 HV6203. The following values were computed from the NAD 83(1991) position.
 HV6203
 HV6203;                    North         East     Units Scale Factor Converg.
 HV6203;SPC MD       -   134,441.084   455,171.838   MT  0.99994985   +0 23 56.6
 HV6203;SPC MD       -   441,078.79  1,493,342.94   sFT  0.99994985   +0 23 56.6
 HV6203;UTM  18      - 4,303,908.416   381,665.374   MT  0.99977243   -0 51 22.7
 HV6203
 HV6203!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6203!SPC MD       -   1.00000533  x   0.99994985  =   0.99995518
 HV6203!UTM  18      -   1.00000533  x   0.99977243  =   0.99977776
 HV6203
 HV6203_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8166503908(NAD 83)
 HV6203
 HV6203                          SUPERSEDED SURVEY CONTROL
 HV6203
 HV6203  NAD 83(1986)-  38 52 33.85015(N)    076 21 51.04845(W) AD(       ) 3
 HV6203  NAD 27      -  38 52 33.42800(N)    076 21 52.20900(W) AD(       ) 3
 HV6203
 HV6203.Superseded values are not recommended for survey control.
 HV6203
 HV6203.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6203.See file dsdata.pdf to determine how the superseded data were derived.
 HV6203
 HV6203_MARKER: DB = BENCH MARK DISK
 HV6203_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV6203+WITH SETTING: PAVEMENT
 HV6203_SP_SET: SLAB
 HV6203_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6203+STABILITY: SURFACE MOTION
 HV6203
 HV6203  HISTORY     - Date     Condition        Report By
 HV6203  HISTORY     - 1945     MONUMENTED       CGS
 HV6203  HISTORY     - 1974     GOOD             MDDNR
 HV6203  HISTORY     - 1989     GOOD             MDDNR
 HV6203  HISTORY     - 19990228 MARK NOT FOUND   USPSQD
 HV6203
 HV6203                          STATION DESCRIPTION
 HV6203
 HV6203'DESCRIBED BY COAST AND GEODETIC SURVEY 1945 (TBR)
 HV6203'LOCATED ABOUT 4.8 MILES S ALONG STATE HIGHWAY 33 FROM THE
 HV6203'JUNCTION OF STATE HIGHWAY 404 AT MATAPEAKE, QUEEN ANNES COUNTY
 HV6203'AND THENCE W ABOUT 1 MILE ALONG A FARM ROAD TO THE E SHORE OF THE
 HV6203'CHESAPEAKE BAY AND THE TOWER.
 HV6203'
 HV6203'A STANDARD BENCH-MARK DISK, NOT STAMPED, IS SET IN THE NW CORNER
 HV6203'OF A SLAB OF CONCRETE UNDER THE TOWER.  IT IS ABOUT 2 FEET N OF
 HV6203'THE NW LEG OF THE TOWER.  ELEVATION--11.651 FEET.
 HV6203
 HV6203                          STATION RECOVERY (1974)
 HV6203
 HV6203'RECOVERY NOTE BY MD DEPT OF NAT RES 1974
 HV6203'STATION RECOVERED WITH CHANGES.  TOWER TORN DOWN BUT CONCRETE LEG
 HV6203'PADS STILL EXIST.  DISK IS IN GOOD CONDITION 8 INCHES BELOW
 HV6203'SURFACE.  STATION IS 46 FEET E OF BULKHEAD, 21.3 FEET S OF SW
 HV6203'CORNER OF BRICK HOUSE AND 7 FEET SE OF TREE STUMP.
 HV6203
 HV6203                          STATION RECOVERY (1989)
 HV6203
 HV6203'RECOVERY NOTE BY MD DEPT OF NAT RES 1989 (LW)
 HV6203'RECOVERED IN GOOD CONDITION.
 HV6203
 HV6203                          STATION RECOVERY (1999)
 HV6203
 HV6203'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV6203'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6442 ***********************************************************************
 DK6442  DESIGNATION -  CBEC
 DK6442  PID         -  DK6442
 DK6442  STATE/COUNTY-  MD/QUEEN ANNES
 DK6442  COUNTRY     -  US
 DK6442  USGS QUAD   -  QUEENSTOWN (2016)
 DK6442
 DK6442                         *CURRENT SURVEY CONTROL
 DK6442  ______________________________________________________________________
 DK6442* NAD 83(1986) POSITION- 38 57 05.3    (N) 076 12 40.8    (W)   HD_HELD2
 DK6442* NAVD 88 ORTHO HEIGHT -     4.961 (meters)       16.28  (feet) ADJUSTED
 DK6442  ______________________________________________________________________
 DK6442  GEOID HEIGHT    -        -33.872 (meters)                     GEOID18
 DK6442  DYNAMIC HEIGHT  -          4.958 (meters)       16.27  (feet) COMP
 DK6442  MODELED GRAVITY -    980,072.4   (mgal)                       NAVD 88
 DK6442
 DK6442  VERT ORDER      -  SECOND    CLASS I
 DK6442
 DK6442.The horizontal coordinates were established by autonomous hand held GPS
 DK6442.observations and have an estimated accuracy of +/- 10 meters.
 DK6442
 DK6442.The orthometric height was determined by differential leveling and
 DK6442.adjusted by the NATIONAL GEODETIC SURVEY
 DK6442.in September 2008.
 DK6442
 DK6442.No vertical observational check was made to the station.
 DK6442
 DK6442.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6442.GEOID18 height accuracy estimate available here.
 DK6442
 DK6442.Click photographs - Photos may exist for this station.
 DK6442
 DK6442.The dynamic height is computed by dividing the NAVD 88
 DK6442.geopotential number by the normal gravity value computed on the
 DK6442.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6442.degrees latitude (g = 980.6199 gals.).
 DK6442
 DK6442.The modeled gravity was interpolated from observed gravity values.
 DK6442
 DK6442;                    North         East    Units  Estimated Accuracy
 DK6442;SPC MD       -   142,914.      468,362.      MT  (+/- 10 meters HH2 GPS)
 DK6442
 DK6442_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9503512089(NAD 83)
 DK6442
 DK6442                          SUPERSEDED SURVEY CONTROL
 DK6442
 DK6442.No superseded survey control is available for this station.
 DK6442
 DK6442_MARKER: DV = VERTICAL CONTROL DISK
 DK6442_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6442_STAMPING: CBEC 2008
 DK6442_MARK LOGO: NGS
 DK6442_PROJECTION: FLUSH
 DK6442_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6442_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6442+STABILITY: SURFACE MOTION
 DK6442_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DK6442+SATELLITE: SATELLITE OBSERVATIONS - March 18, 2011
 DK6442
 DK6442  HISTORY     - Date     Condition        Report By
 DK6442  HISTORY     - 20080710 MONUMENTED       NGS
 DK6442  HISTORY     - 20110318 GOOD             NGS
 DK6442
 DK6442                          STATION DESCRIPTION
 DK6442
 DK6442'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008
 DK6442'THE MARK IS LOCATED ABOUT 4.2 MI (6.8 KM) WEST OF CARMICHAEL, 4.0 MI
 DK6442'(6.4 KM) SOUTHWEST OF QUEENSTOWN AND 0.5 MI (0.8 KM) SOUTH OF
 DK6442'GRASONVILLE.
 DK6442'
 DK6442'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6442'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6442'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6442'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6442'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE AND THE
 DK6442'ENTRANCE LANE TO THE CHESAPEAKE BAY ENVIRONMENTAL CENTER AND THE MARK
 DK6442'ON THE RIGHT ON A SMALL HILL IN BACK OF A LARGE SIGN FOR CHESAPEAKE
 DK6442'BAY ENVIRONMENTAL CENTER.
 DK6442'
 DK6442'IT IS A CONCRETE POST 2.0 FT (0.6 M) HIGHER THAN PERRY CORNER ROAD,
 DK6442'39.1 FT (11.9 M) SOUTHWEST OF THE CENTERLINE OF PERRY CORNER ROAD,
 DK6442'35.1 FT (10.7 M) NORTH-NORTHWEST OF THE CENTERLINE OF DISCOVERY LANE,
 DK6442'28.5 FT (8.7 M) NORTHEAST OF THE NORTHERLY ONE OF 2 6X6 WOODEN POSTS
 DK6442'OF A NORTH-SOUTH WOODEN GATE NORTH OF DISCOVERY LANE, AND 4.0 FT (1.2
 DK6442'M) SOUTH-SOUTHWEST OF THE CENTER OF 3 6X6 WOODEN POSTS SUPPORTING THE
 DK6442'SIGN.
 DK6442
 DK6442                          STATION RECOVERY (2011)
 DK6442
 DK6442'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 DK6442'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6445 ***********************************************************************
 DK6445  DESIGNATION -  CBEC COMMERATIVE MARK
 DK6445  PID         -  DK6445
 DK6445  STATE/COUNTY-  MD/QUEEN ANNES
 DK6445  COUNTRY     -  US
 DK6445  USGS QUAD   -  QUEENSTOWN (2016)
 DK6445
 DK6445                         *CURRENT SURVEY CONTROL
 DK6445  ______________________________________________________________________
 DK6445* NAD 83(1986) POSITION- 38 56 53.4    (N) 076 13 45.7    (W)   HD_HELD2
 DK6445* NAVD 88 ORTHO HEIGHT -     2.293 (meters)        7.52  (feet) ADJUSTED
 DK6445  ______________________________________________________________________
 DK6445  GEOID HEIGHT    -        -33.843 (meters)                     GEOID18
 DK6445  DYNAMIC HEIGHT  -          2.292 (meters)        7.52  (feet) COMP
 DK6445  MODELED GRAVITY -    980,072.8   (mgal)                       NAVD 88
 DK6445
 DK6445  VERT ORDER      -  SECOND    CLASS I
 DK6445
 DK6445.The horizontal coordinates were established by autonomous hand held GPS
 DK6445.observations and have an estimated accuracy of +/- 10 meters.
 DK6445
 DK6445.The orthometric height was determined by differential leveling and
 DK6445.adjusted by the NATIONAL GEODETIC SURVEY
 DK6445.in September 2008.
 DK6445
 DK6445.No vertical observational check was made to the station.
 DK6445
 DK6445.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6445.GEOID18 height accuracy estimate available here.
 DK6445
 DK6445.Click photographs - Photos may exist for this station.
 DK6445
 DK6445.The dynamic height is computed by dividing the NAVD 88
 DK6445.geopotential number by the normal gravity value computed on the
 DK6445.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6445.degrees latitude (g = 980.6199 gals.).
 DK6445
 DK6445.The modeled gravity was interpolated from observed gravity values.
 DK6445
 DK6445;                    North         East    Units  Estimated Accuracy
 DK6445;SPC MD       -   142,534.      466,802.      MT  (+/- 10 meters HH2 GPS)
 DK6445
 DK6445_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9346811743(NAD 83)
 DK6445
 DK6445                          SUPERSEDED SURVEY CONTROL
 DK6445
 DK6445.No superseded survey control is available for this station.
 DK6445
 DK6445_MARKER: DD = SURVEY DISK
 DK6445_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6445_STAMPING: COMM MARK
 DK6445_MARK LOGO: NONE
 DK6445_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6445_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6445+STABILITY: SURFACE MOTION
 DK6445_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DK6445+SATELLITE: SATELLITE OBSERVATIONS - March 18, 2011
 DK6445
 DK6445  HISTORY     - Date     Condition        Report By
 DK6445  HISTORY     - 2006     MONUMENTED       NGS
 DK6445  HISTORY     - 20080614 GOOD             NGS
 DK6445  HISTORY     - 20110318 GOOD             NGS
 DK6445
 DK6445                          STATION DESCRIPTION
 DK6445
 DK6445'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008 (DBC)
 DK6445'THE MARK IS LOCATED ABOUT 5.2 MI (8.3 KM) WEST OF CARMICHAEL, 4.8 MI
 DK6445'(7.8 KM) SOUTHWEST OF QUEENSTOWN AND 1.2 MI (2.0 KM) WEST-SOUTHWEST OF
 DK6445'GRASONVILLE.
 DK6445'
 DK6445'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6445'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6445'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6445'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6445'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE, THENCE
 DK6445'RIGHT (WESTERLY) ALONG DISCOVERY LANE WHICH IS PARTLY TAR AND GRAVELED
 DK6445'FOR 0.95 MI (1.5 KM) TO A Y JUNCTION AND PARKING AREA, THENCE 0.05 MI
 DK6445'(0.1 KM) WESTERLY ACROSS PARKING LOT TO THE CENTER OF AN OPEN SMALL
 DK6445'FIELD, AND MARK IN THE CENTER OF THE FIELD.
 DK6445'
 DK6445'IT IS A 1 FT (0.3 M) DIAMETER BRASS DISK IN TOP OF A OCTAGON CONCRETE
 DK6445'POST 2 INCHES (5 CM) ABOVE THE GROUND, 46.4 FT (14.1 M) EAST OF A
 DK6445'WOODEN RAIL FENCE, 72.6 FT (22.1 M) WEST THE WEST EDGE OF A PARKING
 DK6445'LOT, AND 151.0 FT (46.0 M) WEST-NORTHWEST AND ACROSS THE PARKING LOT
 DK6445'OF A 4X4 WOODEN POST WITH A STREET LIGHT.
 DK6445'
 DK6445'NOTE--ENGRAVED ON THE DISK ARE THE WORDS NATIONAL OCEANIC AND
 DK6445'ATMOSPHERIC ADMINISTRATION CHESAPEAKE BAY ENVIRONMENTAL CENTER.
 DK6445
 DK6445                          STATION RECOVERY (2011)
 DK6445
 DK6445'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 DK6445'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6443 ***********************************************************************
 DK6443  DESIGNATION -  CBEC SITE 1
 DK6443  PID         -  DK6443
 DK6443  STATE/COUNTY-  MD/QUEEN ANNES
 DK6443  COUNTRY     -  US
 DK6443  USGS QUAD   -  QUEENSTOWN (2016)
 DK6443
 DK6443                         *CURRENT SURVEY CONTROL
 DK6443  ______________________________________________________________________
 DK6443* NAD 83(1986) POSITION- 38 56 58.0    (N) 076 13 05.0    (W)   HD_HELD2
 DK6443* NAVD 88 ORTHO HEIGHT -     1.929 (meters)        6.33  (feet) ADJUSTED
 DK6443  ______________________________________________________________________
 DK6443  GEOID HEIGHT    -        -33.864 (meters)                     GEOID18
 DK6443  DYNAMIC HEIGHT  -          1.928 (meters)        6.33  (feet) COMP
 DK6443  MODELED GRAVITY -    980,072.4   (mgal)                       NAVD 88
 DK6443
 DK6443  VERT ORDER      -  SECOND    CLASS I
 DK6443
 DK6443.The horizontal coordinates were established by autonomous hand held GPS
 DK6443.observations and have an estimated accuracy of +/- 10 meters.
 DK6443
 DK6443.The orthometric height was determined by differential leveling and
 DK6443.adjusted by the NATIONAL GEODETIC SURVEY
 DK6443.in September 2008.
 DK6443
 DK6443.No vertical observational check was made to the station.
 DK6443
 DK6443.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6443.GEOID18 height accuracy estimate available here.
 DK6443
 DK6443.Click photographs - Photos may exist for this station.
 DK6443
 DK6443.The dynamic height is computed by dividing the NAVD 88
 DK6443.geopotential number by the normal gravity value computed on the
 DK6443.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6443.degrees latitude (g = 980.6199 gals.).
 DK6443
 DK6443.The modeled gravity was interpolated from observed gravity values.
 DK6443
 DK6443;                    North         East    Units  Estimated Accuracy
 DK6443;SPC MD       -   142,684.      467,781.      MT  (+/- 10 meters HH2 GPS)
 DK6443
 DK6443_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9444911871(NAD 83)
 DK6443
 DK6443                          SUPERSEDED SURVEY CONTROL
 DK6443
 DK6443.No superseded survey control is available for this station.
 DK6443
 DK6443_MARKER: DV = VERTICAL CONTROL DISK
 DK6443_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6443_STAMPING: CBEC SITE 1 2008
 DK6443_MARK LOGO: NGS
 DK6443_PROJECTION: FLUSH
 DK6443_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6443_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6443+STABILITY: SURFACE MOTION
 DK6443_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DK6443+SATELLITE: SATELLITE OBSERVATIONS - March 18, 2011
 DK6443
 DK6443  HISTORY     - Date     Condition        Report By
 DK6443  HISTORY     - 20080711 MONUMENTED       NGS
 DK6443  HISTORY     - 20110318 GOOD             NGS
 DK6443
 DK6443                          STATION DESCRIPTION
 DK6443
 DK6443'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008
 DK6443'THE MARK IS LOCATED ABOUT 4.6 MI (7.4 KM) WEST OF CARMICHAEL, 4.3 MI
 DK6443'(6.9 KM) SOUTHWEST OF QUEENSTOWN AND 0.7 MI (1.1 KM) SOUTHWEST OF
 DK6443'GRASONVILLE.
 DK6443'
 DK6443'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6443'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6443'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6443'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6443'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE, THENCE
 DK6443'RIGHT (WESTERLY) ALONG DISCOVERY LANE WHICH IS PARTLY TAR AND GRAVELED
 DK6443'FOR 0.4 MI (0.6 KM) TO A Y JUNCTION FOR WANUGA LANE AND THE MARK IN
 DK6443'THE CENTER OF THE Y JUNCTION.
 DK6443'
 DK6443'IT IS A CONCRETE POST 0.5 FT (0.2 M) HIGHER THAN DISCOVERY LANE, 66.9
 DK6443'FT (20.4 M) SOUTHEAST OF AND ACROSS DISCOVERY LANE FROM A GREEN SQUARE
 DK6443'UTILITY BOX, 32.4 FT (9.9 M) SOUTH OF THE CENTERLINE OF DISCOVERY
 DK6443'LANE, 27.9 FT (8.5 M) WEST OF THE CENTERLINE OF WANUGA LANE, AND 4.8
 DK6443'FT (1.5 M) NORTHEAST OF A POWER LINE POLE NUMBER 29404 14584 WITH 5
 DK6443'GUY WIRES.
 DK6443
 DK6443                          STATION RECOVERY (2011)
 DK6443
 DK6443'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 DK6443'MARK IS SOUTHWEST OF POWER LINE POLE 29404 14584 NOT NORTHEAST AS
 DK6443'DESCRIBED IN 2008.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6446 ***********************************************************************
 DK6446  DESIGNATION -  CBEC SITE 2
 DK6446  PID         -  DK6446
 DK6446  STATE/COUNTY-  MD/QUEEN ANNES
 DK6446  COUNTRY     -  US
 DK6446  USGS QUAD   -  QUEENSTOWN (2016)
 DK6446
 DK6446                         *CURRENT SURVEY CONTROL
 DK6446  ______________________________________________________________________
 DK6446* NAD 83(1986) POSITION- 38 56 39.9    (N) 076 13 46.6    (W)   HD_HELD2
 DK6446* NAVD 88 ORTHO HEIGHT -     0.649 (meters)        2.13  (feet) ADJUSTED
 DK6446  ______________________________________________________________________
 DK6446  GEOID HEIGHT    -        -33.856 (meters)                     GEOID18
 DK6446  DYNAMIC HEIGHT  -          0.649 (meters)        2.13  (feet) COMP
 DK6446  MODELED GRAVITY -    980,071.9   (mgal)                       NAVD 88
 DK6446
 DK6446  VERT ORDER      -  SECOND    CLASS I
 DK6446
 DK6446.The horizontal coordinates were established by autonomous hand held GPS
 DK6446.observations and have an estimated accuracy of +/- 10 meters.
 DK6446
 DK6446.The orthometric height was determined by differential leveling and
 DK6446.adjusted by the NATIONAL GEODETIC SURVEY
 DK6446.in September 2008.
 DK6446
 DK6446.No vertical observational check was made to the station.
 DK6446
 DK6446.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6446.GEOID18 height accuracy estimate available here.
 DK6446
 DK6446.Click photographs - Photos may exist for this station.
 DK6446
 DK6446.The dynamic height is computed by dividing the NAVD 88
 DK6446.geopotential number by the normal gravity value computed on the
 DK6446.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6446.degrees latitude (g = 980.6199 gals.).
 DK6446
 DK6446.The modeled gravity was interpolated from observed gravity values.
 DK6446
 DK6446;                    North         East    Units  Estimated Accuracy
 DK6446;SPC MD       -   142,118.      466,784.      MT  (+/- 10 meters HH2 GPS)
 DK6446
 DK6446_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9344011327(NAD 83)
 DK6446
 DK6446                          SUPERSEDED SURVEY CONTROL
 DK6446
 DK6446.No superseded survey control is available for this station.
 DK6446
 DK6446_MARKER: DV = VERTICAL CONTROL DISK
 DK6446_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6446_STAMPING: CBEC SITE 2 2008
 DK6446_MARK LOGO: NGS
 DK6446_PROJECTION: FLUSH
 DK6446_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6446_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6446+STABILITY: SURFACE MOTION
 DK6446
 DK6446  HISTORY     - Date     Condition        Report By
 DK6446  HISTORY     - 20080708 MONUMENTED       NGS
 DK6446
 DK6446                          STATION DESCRIPTION
 DK6446
 DK6446'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008
 DK6446'THE MARK IS LOCATED ABOUT 5.3 MI (8.5 KM) SOUTHWEST OF QUEENSTOWN, 5.2
 DK6446'MI (8.3 KM) WEST OF CARMICHAEL AND 1.8 MI (2.8 KM) SOUTHWEST OF
 DK6446'GRASONVILLE.
 DK6446'
 DK6446'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6446'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6446'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6446'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6446'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE, THENCE
 DK6446'RIGHT (WESTERLY) ALONG DISCOVERY LANE WHICH IS PARTLY TAR AND GRAVELED
 DK6446'FOR 0.95 MI (1.5 KM) TO A Y JUNCTION AND PARKING AREA, THENCE 0.05 MI
 DK6446'(0.1 KM) WEST-SOUTHWEST ALONG DISCOVERY LANE TO A T JUNCTION, CONTINUE
 DK6446'0.05 MI (0.1 KM) SOUTHWESTERLY ALONG A DIRT ROAD PASSING THE
 DK6446'ENVIRONMENTAL CENTER OFFICE ON RIGHT, TO WHERE A GRASSY AREA AND A
 DK6446'GRASSY PATH MEET AND A ARROW SIGN FOR PINEY POINT PATH ON THE RIGHT,
 DK6446'CONTINUE SOUTHWESTERLY ALONG THE GRASSY PATH FOR 0.05 MI (0.1 KM) TO A
 DK6446'T JUNCTION FOR PINEY POINT PATH, THENCE WEST-SOUTHWEST ALONG PINEY
 DK6446'POINT PATH FOR 0.16 MI (0.3 KM) TO MARK ON THE RIGHT.
 DK6446'
 DK6446'IT IS A CONCRETE POST FLUSH WITH THE GROUND, 7.6 FT (2.3 M) SOUTHEAST
 DK6446'OF A TALL PINE TREE, 10.5 FT (3.2 M) NORTHEAST AND ACROSS PINEY POINT
 DK6446'PATH OF A PINE TREE, 15.0 FT (4.6 M) NORTHEAST OF THE CENTER ONE OF
 DK6446'THREE PINE TREES, AND 1.7 FT (0.5 M) SOUTHWEST OF A ORANGE CARSONITE
 DK6446'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6444 ***********************************************************************
 DK6444  DESIGNATION -  CBEC SITE 3
 DK6444  PID         -  DK6444
 DK6444  STATE/COUNTY-  MD/QUEEN ANNES
 DK6444  COUNTRY     -  US
 DK6444  USGS QUAD   -  QUEENSTOWN (2016)
 DK6444
 DK6444                         *CURRENT SURVEY CONTROL
 DK6444  ______________________________________________________________________
 DK6444* NAD 83(1986) POSITION- 38 56 48.8    (N) 076 13 02.1    (W)   HD_HELD2
 DK6444* NAVD 88 ORTHO HEIGHT -     0.891 (meters)        2.92  (feet) ADJUSTED
 DK6444  ______________________________________________________________________
 DK6444  GEOID HEIGHT    -        -33.875 (meters)                     GEOID18
 DK6444  DYNAMIC HEIGHT  -          0.891 (meters)        2.92  (feet) COMP
 DK6444  MODELED GRAVITY -    980,071.7   (mgal)                       NAVD 88
 DK6444
 DK6444  VERT ORDER      -  SECOND    CLASS I
 DK6444
 DK6444.The horizontal coordinates were established by autonomous hand held GPS
 DK6444.observations and have an estimated accuracy of +/- 10 meters.
 DK6444
 DK6444.The orthometric height was determined by differential leveling and
 DK6444.adjusted by the NATIONAL GEODETIC SURVEY
 DK6444.in September 2008.
 DK6444
 DK6444.No vertical observational check was made to the station.
 DK6444
 DK6444.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6444.GEOID18 height accuracy estimate available here.
 DK6444
 DK6444.Click photographs - Photos may exist for this station.
 DK6444
 DK6444.The dynamic height is computed by dividing the NAVD 88
 DK6444.geopotential number by the normal gravity value computed on the
 DK6444.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6444.degrees latitude (g = 980.6199 gals.).
 DK6444
 DK6444.The modeled gravity was interpolated from observed gravity values.
 DK6444
 DK6444;                    North         East    Units  Estimated Accuracy
 DK6444;SPC MD       -   142,401.      467,853.      MT  (+/- 10 meters HH2 GPS)
 DK6444
 DK6444_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9451511587(NAD 83)
 DK6444
 DK6444                          SUPERSEDED SURVEY CONTROL
 DK6444
 DK6444.No superseded survey control is available for this station.
 DK6444
 DK6444_MARKER: DV = VERTICAL CONTROL DISK
 DK6444_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6444_STAMPING: CBEC SITE 3 2008
 DK6444_MARK LOGO: NGS
 DK6444_PROJECTION: FLUSH
 DK6444_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6444_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6444+STABILITY: SURFACE MOTION
 DK6444
 DK6444  HISTORY     - Date     Condition        Report By
 DK6444  HISTORY     - 20080712 MONUMENTED       NGS
 DK6444
 DK6444                          STATION DESCRIPTION
 DK6444
 DK6444'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008
 DK6444'THE MARK IS LOCATED ABOUT 4.5 MI (7.3 KM) WEST OF CARMICHAEL, 4.4 MI
 DK6444'(7.1 KM) SOUTHWEST OF QUEENSTOWN AND 0.9 MI (1.4 KM) SOUTH-SOUTHWEST
 DK6444'OF GRASONVILLE.
 DK6444'
 DK6444'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6444'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6444'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6444'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6444'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE, THENCE
 DK6444'RIGHT (WESTERLY) ALONG DISCOVERY LANE WHICH IS PARTLY TAR AND GRAVELED
 DK6444'FOR 0.4 MI (0.6 KM) TO A Y JUNCTION FOR WANUGA LANE, THENCE SOUTHEAST
 DK6444'ALONG WANUGA LANE FOR 0.2 MILE (0.32 KM) TO A 2 STORY BROWN VINYL
 DK6444'HOUSE ON PILINGS AND MARK NEAR A TELEPHONE POLE.
 DK6444'
 DK6444'IT IS A CONCRETE POST FLUSH WITH WANUGA LANE, 47.6 FT (14.5 M) NORTH
 DK6444'OF THE NORTH CORNER OF 2 STORY HOUSE, 69.6 FT (21.2 M) EAST-NORTHEAST
 DK6444'OF THE CENTER OF THE WEST WELL COVER OF 3 WELLS, 11.9 FT (3.6 M)
 DK6444'SOUTH-SOUTHWEST OF THE CENTERLINE OF WANUGA LANE, AND 4.0 FT (1.2 M)
 DK6444'EAST-SOUTHEAST OF A POWER POLE NUMBER 29427 14493 WITH A TRANSFORMER,
 DK6444'STREET LIGHT, AND WITH 2 GUY WIRES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6449 ***********************************************************************
 DK6449  DESIGNATION -  CBEC SITE 4
 DK6449  PID         -  DK6449
 DK6449  STATE/COUNTY-  MD/QUEEN ANNES
 DK6449  COUNTRY     -  US
 DK6449  USGS QUAD   -  QUEENSTOWN (2016)
 DK6449
 DK6449                         *CURRENT SURVEY CONTROL
 DK6449  ______________________________________________________________________
 DK6449* NAD 83(1986) POSITION- 38 57 07.5    (N) 076 14 02.0    (W)   HD_HELD2
 DK6449* NAVD 88 ORTHO HEIGHT -     0.730 (meters)        2.40  (feet) ADJUSTED
 DK6449  ______________________________________________________________________
 DK6449  GEOID HEIGHT    -        -33.818 (meters)                     GEOID18
 DK6449  DYNAMIC HEIGHT  -          0.730 (meters)        2.40  (feet) COMP
 DK6449  MODELED GRAVITY -    980,073.8   (mgal)                       NAVD 88
 DK6449
 DK6449  VERT ORDER      -  SECOND    CLASS I
 DK6449
 DK6449.The horizontal coordinates were established by autonomous hand held GPS
 DK6449.observations and have an estimated accuracy of +/- 10 meters.
 DK6449
 DK6449.The orthometric height was determined by differential leveling and
 DK6449.adjusted by the NATIONAL GEODETIC SURVEY
 DK6449.in September 2008.
 DK6449
 DK6449.No vertical observational check was made to the station.
 DK6449
 DK6449.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6449.GEOID18 height accuracy estimate available here.
 DK6449
 DK6449.Click photographs - Photos may exist for this station.
 DK6449
 DK6449.The dynamic height is computed by dividing the NAVD 88
 DK6449.geopotential number by the normal gravity value computed on the
 DK6449.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6449.degrees latitude (g = 980.6199 gals.).
 DK6449
 DK6449.The modeled gravity was interpolated from observed gravity values.
 DK6449
 DK6449;                    North         East    Units  Estimated Accuracy
 DK6449;SPC MD       -   142,966.      466,406.      MT  (+/- 10 meters HH2 GPS)
 DK6449
 DK6449_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9308112183(NAD 83)
 DK6449
 DK6449                          SUPERSEDED SURVEY CONTROL
 DK6449
 DK6449.No superseded survey control is available for this station.
 DK6449
 DK6449_MARKER: DV = VERTICAL CONTROL DISK
 DK6449_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6449_STAMPING: CBEC SITE 4 2008
 DK6449_MARK LOGO: NGS
 DK6449_PROJECTION: RECESSED 3 CENTIMETERS
 DK6449_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6449_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6449+STABILITY: SURFACE MOTION
 DK6449_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DK6449+SATELLITE: SATELLITE OBSERVATIONS - July 14, 2008
 DK6449
 DK6449  HISTORY     - Date     Condition        Report By
 DK6449  HISTORY     - 20080714 MONUMENTED       NGS
 DK6449
 DK6449                          STATION DESCRIPTION
 DK6449
 DK6449'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008
 DK6449'THE MARK IS LOCATED ABOUT 5.4 MI (8.8 KM) WEST OF CARMICHAEL, 4.9 MI
 DK6449'(7.8 KM) WEST-SOUTHWEST OF QUEENSTOWN AND 1.3 MI (2.2 KM)
 DK6449'WEST-SOUTHWEST OF GRASONVILLE.
 DK6449'
 DK6449'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6449'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6449'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6449'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6449'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE, THENCE
 DK6449'RIGHT (WESTERLY) ALONG DISCOVERY LANE WHICH IS PARTLY TAR AND GRAVELED
 DK6449'FOR 0.95 MI (1.5 KM) TO A Y JUNCTION AND PARKING AREA, THENCE 0.05 MI
 DK6449'(0.1 KM) WEST-SOUTHWEST ALONG DISCOVERY LANE TO A T JUNCTION, THENCE
 DK6449'RIGHT (NORTHWEST) ALONG THE DIRT ROAD FOR 0.5 MI (0.8 KM) TO MARK ON
 DK6449'THE LEFT AT A WOODEN WALK OUT TO AN OBSERVATION DECK AT HOG BAY.
 DK6449'
 DK6449'IT IS A CONCRETE POST RECESSED 1 INCH (3 CM) BELOW THE GROUND, 13.4 FT
 DK6449'(4.1 M) WEST OF THE CENTERLINE OF THE DIRT ROAD, 24.2 FT (7.4 M)
 DK6449'WEST-NORTHWEST OF THE SOUTH-SOUTHWEST CORNER OF AN ABANDONED SINGLE
 DK6449'STORY HOUSE, 3.5 FT (1.1 M) EAST OF THE EAST EDGE OF THE BOARDWALK
 DK6449'LEADING TO THE OBSERVATION DECK, AND 1.6 FT (0.5 M) SOUTH OF A ORANGE
 DK6449'CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6447 ***********************************************************************
 DK6447  DESIGNATION -  CBEC SITE 5
 DK6447  PID         -  DK6447
 DK6447  STATE/COUNTY-  MD/QUEEN ANNES
 DK6447  COUNTRY     -  US
 DK6447  USGS QUAD   -  QUEENSTOWN (2016)
 DK6447
 DK6447                         *CURRENT SURVEY CONTROL
 DK6447  ______________________________________________________________________
 DK6447* NAD 83(1986) POSITION- 38 57 06.6    (N) 076 13 46.4    (W)   HD_HELD2
 DK6447* NAVD 88 ORTHO HEIGHT -     0.595 (meters)        1.95  (feet) ADJUSTED
 DK6447  ______________________________________________________________________
 DK6447  GEOID HEIGHT    -        -33.829 (meters)                     GEOID18
 DK6447  DYNAMIC HEIGHT  -          0.594 (meters)        1.95  (feet) COMP
 DK6447  MODELED GRAVITY -    980,073.5   (mgal)                       NAVD 88
 DK6447
 DK6447  VERT ORDER      -  SECOND    CLASS I
 DK6447
 DK6447.The horizontal coordinates were established by autonomous hand held GPS
 DK6447.observations and have an estimated accuracy of +/- 10 meters.
 DK6447
 DK6447.The orthometric height was determined by differential leveling and
 DK6447.adjusted by the NATIONAL GEODETIC SURVEY
 DK6447.in September 2008.
 DK6447
 DK6447.No vertical observational check was made to the station.
 DK6447
 DK6447.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6447.GEOID18 height accuracy estimate available here.
 DK6447
 DK6447.Click photographs - Photos may exist for this station.
 DK6447
 DK6447.The dynamic height is computed by dividing the NAVD 88
 DK6447.geopotential number by the normal gravity value computed on the
 DK6447.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6447.degrees latitude (g = 980.6199 gals.).
 DK6447
 DK6447.The modeled gravity was interpolated from observed gravity values.
 DK6447
 DK6447;                    North         East    Units  Estimated Accuracy
 DK6447;SPC MD       -   142,941.      466,782.      MT  (+/- 10 meters HH2 GPS)
 DK6447
 DK6447_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9345612150(NAD 83)
 DK6447
 DK6447                          SUPERSEDED SURVEY CONTROL
 DK6447
 DK6447.No superseded survey control is available for this station.
 DK6447
 DK6447_MARKER: DV = VERTICAL CONTROL DISK
 DK6447_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6447_STAMPING: CBEC SITE 5 2008
 DK6447_MARK LOGO: NGS
 DK6447_PROJECTION: FLUSH
 DK6447_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6447_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6447+STABILITY: SURFACE MOTION
 DK6447
 DK6447  HISTORY     - Date     Condition        Report By
 DK6447  HISTORY     - 20080714 MONUMENTED       NGS
 DK6447
 DK6447                          STATION DESCRIPTION
 DK6447
 DK6447'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008
 DK6447'THE MARK IS LOCATED ABOUT 5.2 MI (8.4 KM) WEST OF CARMICHAEL, 4.7 MI
 DK6447'(7.6 KM) SOUTHWEST OF QUEENSTOWN AND 1.1 MI (1.8 KM) WEST-SOUTHWEST OF
 DK6447'GRASONVILLE.
 DK6447'
 DK6447'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6447'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6447'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6447'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6447'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE, THENCE
 DK6447'RIGHT (WESTERLY) ALONG DISCOVERY LANE WHICH IS PARTLY TAR AND GRAVELED
 DK6447'FOR 0.95 MI (1.5 KM) TO A Y JUNCTION AND PARKING AREA, THENCE 0.3 MI
 DK6447'(0.5 KM) NORTHWEST ALONG A DIRT ROAD TO THE END AT A CANOE STORAGE
 DK6447'RACKS AND MARK ON THE RIGHT.
 DK6447'
 DK6447'IT IS A CONCRETE POST LEVEL WITH THE DIRT ROAD, 25.3 FT (7.7 M) SOUTH
 DK6447'OF THE SOUTH CORNER OF A 4X4 POST WITH SIGN THIS ACTIVITY SUPPORTED BY
 DK6447'CHESAPEAKE BAY TRUST, 9.5 FT (2.9 M) EAST OF THE CENTERLINE OF THE
 DK6447'DIRT ROAD, AND 2.3 FT (0.7 M) WEST OF A ORANGE CARSONITE WITNESS POST
 DK6447'NEXT TO THE CANOE RACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6450 ***********************************************************************
 DK6450  DESIGNATION -  CBEC SITE 6
 DK6450  PID         -  DK6450
 DK6450  STATE/COUNTY-  MD/QUEEN ANNES
 DK6450  COUNTRY     -  US
 DK6450  USGS QUAD   -  QUEENSTOWN (2016)
 DK6450
 DK6450                         *CURRENT SURVEY CONTROL
 DK6450  ______________________________________________________________________
 DK6450* NAD 83(1986) POSITION- 38 56 50.9    (N) 076 14 07.5    (W)   HD_HELD2
 DK6450* NAVD 88 ORTHO HEIGHT -     1.738 (meters)        5.70  (feet) ADJUSTED
 DK6450  ______________________________________________________________________
 DK6450  GEOID HEIGHT    -        -33.831 (meters)                     GEOID18
 DK6450  DYNAMIC HEIGHT  -          1.737 (meters)        5.70  (feet) COMP
 DK6450  MODELED GRAVITY -    980,072.9   (mgal)                       NAVD 88
 DK6450
 DK6450  VERT ORDER      -  SECOND    CLASS I
 DK6450
 DK6450.The horizontal coordinates were established by autonomous hand held GPS
 DK6450.observations and have an estimated accuracy of +/- 10 meters.
 DK6450
 DK6450.The orthometric height was determined by differential leveling and
 DK6450.adjusted by the NATIONAL GEODETIC SURVEY
 DK6450.in September 2008.
 DK6450
 DK6450.No vertical observational check was made to the station.
 DK6450
 DK6450.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6450.GEOID18 height accuracy estimate available here.
 DK6450
 DK6450.Click photographs - Photos may exist for this station.
 DK6450
 DK6450.The dynamic height is computed by dividing the NAVD 88
 DK6450.geopotential number by the normal gravity value computed on the
 DK6450.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6450.degrees latitude (g = 980.6199 gals.).
 DK6450
 DK6450.The modeled gravity was interpolated from observed gravity values.
 DK6450
 DK6450;                    North         East    Units  Estimated Accuracy
 DK6450;SPC MD       -   142,453.      466,278.      MT  (+/- 10 meters HH2 GPS)
 DK6450
 DK6450_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9294211673(NAD 83)
 DK6450
 DK6450                          SUPERSEDED SURVEY CONTROL
 DK6450
 DK6450.No superseded survey control is available for this station.
 DK6450
 DK6450_MARKER: DV = VERTICAL CONTROL DISK
 DK6450_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6450_STAMPING: CBEC SITE 6 2008
 DK6450_MARK LOGO: NGS
 DK6450_PROJECTION: FLUSH
 DK6450_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6450_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6450+STABILITY: SURFACE MOTION
 DK6450_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DK6450+SATELLITE: SATELLITE OBSERVATIONS - July 14, 2008
 DK6450
 DK6450  HISTORY     - Date     Condition        Report By
 DK6450  HISTORY     - 20080714 MONUMENTED       NGS
 DK6450
 DK6450                          STATION DESCRIPTION
 DK6450
 DK6450'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008
 DK6450'THE MARK IS LOCATED ABOUT 5.3 MI (8.5 KM) SOUTHWEST OF QUEENSTOWN, 5.2
 DK6450'MI (8.3 KM) WEST OF CARMICHAEL AND 1.8 MI (2.8 KM) SOUTHWEST OF
 DK6450'GRASONVILLE.
 DK6450'
 DK6450'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6450'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6450'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6450'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6450'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE, THENCE
 DK6450'RIGHT (WESTERLY) ALONG DISCOVERY LANE WHICH IS PARTLY TAR AND GRAVELED
 DK6450'FOR 0.95 MI (1.5 KM) TO A Y JUNCTION AND PARKING AREA, THENCE 0.05 MI
 DK6450'(0.1 KM) WEST-SOUTHWEST ALONG DISCOVERY LANE TO A T JUNCTION, THENCE
 DK6450'RIGHT (WESTERLY) ALONG DIRT ROAD FOR 0.25 MI (0.4 KM) TO A SIDE DIRT
 DK6450'ROAD ON THE LEFT, THENCE LEFT (SOUTHWESTERLY) ALONG THE DIRT ROAD FOR
 DK6450'0.2 MI (0.3 KM) TO WHERE THE DIRT ROAD COMES TO A OPEN AREA WITH A
 DK6450'WHITE HOUSE AND WHERE A POND ENDS ON THE RIGHT AND THE MARK ON THE
 DK6450'RIGHT AT THE NORTHWEST SIDE OF A SMALL BANK FOR THE POND.
 DK6450'
 DK6450'IT IS A CONCRETE POST ABOUT 1.0 FT (0.3 M) BELOW THE BANK, 68.2 FT
 DK6450'(20.8 M) NORTHEAST OF THE CENTERLINE OF THE DIRT ROAD, 112.0 FT (34.1
 DK6450'M) SOUTHWEST OF THE EAST CORNER OF THE WHITE HOUSE, AND 1.2 FT (0.4 M)
 DK6450'WEST-NORTHWEST OF A ORANGE CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6451 ***********************************************************************
 DK6451  DESIGNATION -  CBEC SITE 7
 DK6451  PID         -  DK6451
 DK6451  STATE/COUNTY-  MD/QUEEN ANNES
 DK6451  COUNTRY     -  US
 DK6451  USGS QUAD   -  QUEENSTOWN (2016)
 DK6451
 DK6451                         *CURRENT SURVEY CONTROL
 DK6451  ______________________________________________________________________
 DK6451* NAD 83(1986) POSITION- 38 56 56.15   (N) 076 13 30.10   (W)   HD_HELD1
 DK6451* NAVD 88 ORTHO HEIGHT -     0.612 (meters)        2.01  (feet) ADJUSTED
 DK6451  ______________________________________________________________________
 DK6451  GEOID HEIGHT    -        -33.850 (meters)                     GEOID18
 DK6451  DYNAMIC HEIGHT  -          0.611 (meters)        2.00  (feet) COMP
 DK6451  MODELED GRAVITY -    980,072.6   (mgal)                       NAVD 88
 DK6451
 DK6451  VERT ORDER      -  SECOND    CLASS I
 DK6451
 DK6451.The horizontal coordinates were determined by differentially corrected
 DK6451.hand held GPS observations or other comparable positioning techniques
 DK6451.and have an estimated accuracy of +/- 3 meters.
 DK6451
 DK6451.The orthometric height was determined by differential leveling and
 DK6451.adjusted by the NATIONAL GEODETIC SURVEY
 DK6451.in September 2008.
 DK6451
 DK6451.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6451.GEOID18 height accuracy estimate available here.
 DK6451
 DK6451.Click photographs - Photos may exist for this station.
 DK6451
 DK6451.The dynamic height is computed by dividing the NAVD 88
 DK6451.geopotential number by the normal gravity value computed on the
 DK6451.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6451.degrees latitude (g = 980.6199 gals.).
 DK6451
 DK6451.The modeled gravity was interpolated from observed gravity values.
 DK6451
 DK6451;                    North         East    Units  Estimated Accuracy
 DK6451;SPC MD       -   142,622.2     467,177.2     MT  (+/- 3 meters HH1 GPS) 
 DK6451
 DK6451_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9384411822(NAD 83)
 DK6451
 DK6451                          SUPERSEDED SURVEY CONTROL
 DK6451
 DK6451.No superseded survey control is available for this station.
 DK6451
 DK6451_MARKER: DV = VERTICAL CONTROL DISK
 DK6451_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6451_STAMPING: CBEC SITE 7 2008
 DK6451_MARK LOGO: NGS
 DK6451_PROJECTION: RECESSED 3 CENTIMETERS
 DK6451_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6451_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6451+STABILITY: SURFACE MOTION
 DK6451
 DK6451  HISTORY     - Date     Condition        Report By
 DK6451  HISTORY     - 20080711 MONUMENTED       NGS
 DK6451  HISTORY     - 20110318 GOOD             NGS
 DK6451
 DK6451                          STATION DESCRIPTION
 DK6451
 DK6451'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008
 DK6451'THE MARK IS LOCATED ABOUT 4.9 MI (8.0 KM) WEST OF CARMICHAEL, 4.6 MI
 DK6451'(7.4 KM) SOUTHWEST OF QUEENSTOWN AND 1.0 MI (1.7 KM) SOUTHWEST OF
 DK6451'GRASONVILLE.
 DK6451'
 DK6451'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6451'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6451'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6451'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6451'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE, THENCE
 DK6451'RIGHT (WESTERLY) ALONG DISCOVERY LANE WHICH IS PARTLY TAR AND GRAVELED
 DK6451'FOR 1.23 KM (0.81 MI) TO THE MARK ON THE RIGHT AT THE EDGE OF A SMALL
 DK6451'WOODED AREA.
 DK6451'
 DK6451'IT IS A CONCRETE POST FLUSH WITH DISCOVERY LANE, 47.0 FT (14.3 M)
 DK6451'NORTH OF THE CENTERLINE OF DISCOVERY LANE, 95.6 FT (29.1 M) NORTHEAST
 DK6451'OF A GREEN COLORED UTILITY BOX, 129.0 FT (39.3 M) NORTHEAST AND ACROSS
 DK6451'DISCOVERY LANE FROM A TELEPHONE POLE WITH ONE GUY WIRE, 5.3 FT (1.6 M)
 DK6451'SOUTHWEST OF A PINE TREE, AND 2.0 FT (0.6 M) SOUTH OF A CARSONITE
 DK6451'ORANGE WITNESS POST.
 DK6451
 DK6451                          STATION RECOVERY (2011)
 DK6451
 DK6451'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 DK6451'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK6448 ***********************************************************************
 DK6448  DESIGNATION -  CBEC SITE PAULAS
 DK6448  PID         -  DK6448
 DK6448  STATE/COUNTY-  MD/QUEEN ANNES
 DK6448  COUNTRY     -  US
 DK6448  USGS QUAD   -  QUEENSTOWN (2016)
 DK6448
 DK6448                         *CURRENT SURVEY CONTROL
 DK6448  ______________________________________________________________________
 DK6448* NAD 83(1986) POSITION- 38 56 52.7    (N) 076 13 56.0    (W)   HD_HELD2
 DK6448* NAVD 88 ORTHO HEIGHT -     1.010 (meters)        3.31  (feet) ADJUSTED
 DK6448  ______________________________________________________________________
 DK6448  GEOID HEIGHT    -        -33.837 (meters)                     GEOID18
 DK6448  DYNAMIC HEIGHT  -          1.009 (meters)        3.31  (feet) COMP
 DK6448  MODELED GRAVITY -    980,072.8   (mgal)                       NAVD 88
 DK6448
 DK6448  VERT ORDER      -  SECOND    CLASS I
 DK6448
 DK6448.The horizontal coordinates were established by autonomous hand held GPS
 DK6448.observations and have an estimated accuracy of +/- 10 meters.
 DK6448
 DK6448.The orthometric height was determined by differential leveling and
 DK6448.adjusted by the NATIONAL GEODETIC SURVEY
 DK6448.in September 2008.
 DK6448
 DK6448.No vertical observational check was made to the station.
 DK6448
 DK6448.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK6448.GEOID18 height accuracy estimate available here.
 DK6448
 DK6448.Click photographs - Photos may exist for this station.
 DK6448
 DK6448.The dynamic height is computed by dividing the NAVD 88
 DK6448.geopotential number by the normal gravity value computed on the
 DK6448.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DK6448.degrees latitude (g = 980.6199 gals.).
 DK6448
 DK6448.The modeled gravity was interpolated from observed gravity values.
 DK6448
 DK6448;                    North         East    Units  Estimated Accuracy
 DK6448;SPC MD       -   142,511.      466,554.      MT  (+/- 10 meters HH2 GPS)
 DK6448
 DK6448_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9321911724(NAD 83)
 DK6448
 DK6448                          SUPERSEDED SURVEY CONTROL
 DK6448
 DK6448.No superseded survey control is available for this station.
 DK6448
 DK6448_MARKER: DV = VERTICAL CONTROL DISK
 DK6448_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK6448_STAMPING: CBEC SITE PAULAS 2008
 DK6448_MARK LOGO: NGS
 DK6448_PROJECTION: FLUSH
 DK6448_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK6448_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK6448+STABILITY: SURFACE MOTION
 DK6448_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DK6448+SATELLITE: SATELLITE OBSERVATIONS - July 11, 2008
 DK6448
 DK6448  HISTORY     - Date     Condition        Report By
 DK6448  HISTORY     - 20080711 MONUMENTED       NGS
 DK6448
 DK6448                          STATION DESCRIPTION
 DK6448
 DK6448'DESCRIBED BY NATIONAL GEODETIC SURVEY 2008
 DK6448'THE MARK IS LOCATED ABOUT 5.3 MI (8.6 KM) WEST OF CARMICHAEL, 5.0 MI
 DK6448'(8.0 KM) SOUTHWEST OF QUEENSTOWN AND 1.4 MI (2.2 KM) WEST-SOUTHWEST OF
 DK6448'GRASONVILLE.
 DK6448'
 DK6448'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 18 AND CHESTER RIVER
 DK6448'BEACH ROAD IN GRASONVILLE, GO EAST FOR 0.2 MI (0.3 KM) PASSING THE
 DK6448'GRASONVILLE FIRE DEPARTMENT BUILDING ON THE RIGHT TO THE JUNCTION OF
 DK6448'PERRY CORNER ROAD ON THE RIGHT, THENCE SOUTHEAST ALONG PERRY CORNER
 DK6448'ROAD FOR 0.5 MI (0.8 KM) TO THE JUNCTION OF DISCOVERY LANE, THENCE
 DK6448'RIGHT (WESTERLY) ALONG DISCOVERY LANE WHICH IS PARTLY TAR AND GRAVELED
 DK6448'FOR 0.95 MI (1.5 KM) TO A Y JUNCTION AND PARKING AREA, THENCE 0.05 MI
 DK6448'(0.1 KM) WEST-SOUTHWEST ALONG DISCOVERY LANE TO A T JUNCTION, THENCE
 DK6448'RIGHT (NORTHWEST) ALONG A DIRT ROAD FOR 0.2 MI (0.3 KM) TO THE MARK ON
 DK6448'THE LEFT AT A Y JUNCTION FOR A PATH FOR SOUTH MEADOW.
 DK6448'
 DK6448'IT IS A CONCRETE POST 0.1 IN ABOVE DIRT ROAD, 33.9 FT (10.3 M) EAST OF
 DK6448'A ROUND WOODEN POST SUPPORTING A ARROW SIGN FOR SOUTH MEADOW, 21.5 FT
 DK6448'(6.6 M) SOUTH OF THE CENTERLINE OF THE DIRT ROAD, 172.0 FT (52.4 M)
 DK6448'EAST OF THE CENTERLINE OF A DIRT ROAD LEADING SOUTH-SOUTHEAST TO BENCH
 DK6448'MARK CBEC SITE 6, AND 2.7 FT (1.8 M) NORTH OF A CHAIN LINK FENCE AND A
 DK6448'ORANGE CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1165 ***********************************************************************
 JV1165  DESIGNATION -  CC 29
 JV1165  PID         -  JV1165
 JV1165  STATE/COUNTY-  MD/BALTIMORE
 JV1165  COUNTRY     -  US
 JV1165  USGS QUAD   -  TOWSON (2016)
 JV1165
 JV1165                         *CURRENT SURVEY CONTROL
 JV1165  ______________________________________________________________________
 JV1165* NAD 83(1986) POSITION- 39 24 49.     (N) 076 36 42.     (W)   SCALED
 JV1165* NAVD 88 ORTHO HEIGHT -   118.782 (meters)      389.70  (feet) ADJUSTED
 JV1165  ______________________________________________________________________
 JV1165  GEOID HEIGHT    -        -32.539 (meters)                     GEOID18
 JV1165  DYNAMIC HEIGHT  -        118.719 (meters)      389.50  (feet) COMP
 JV1165  MODELED GRAVITY -    980,093.2   (mgal)                       NAVD 88
 JV1165
 JV1165  VERT ORDER      -  SECOND    CLASS 0
 JV1165
 JV1165.The horizontal coordinates were scaled from a map and have
 JV1165.an estimated accuracy of +/- 6 seconds.
 JV1165
 JV1165.The orthometric height was determined by differential leveling and
 JV1165.adjusted by the NATIONAL GEODETIC SURVEY
 JV1165.in June 1991.
 JV1165
 JV1165.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1165.GEOID18 height accuracy estimate available here.
 JV1165
 JV1165.Click photographs - Photos may exist for this station.
 JV1165
 JV1165.The dynamic height is computed by dividing the NAVD 88
 JV1165.geopotential number by the normal gravity value computed on the
 JV1165.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1165.degrees latitude (g = 980.6199 gals.).
 JV1165
 JV1165.The modeled gravity was interpolated from observed gravity values.
 JV1165
 JV1165;                    North         East    Units  Estimated Accuracy
 JV1165;SPC MD       -   194,000.      433,440.      MT  (+/- 180 meters Scaled)
 JV1165
 JV1165_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ612639(NAD 83)
 JV1165
 JV1165                          SUPERSEDED SURVEY CONTROL
 JV1165
 JV1165  NGVD 29 (11/26/84)  119.006  (m)          390.44   (f) ADJUSTED    2 0
 JV1165
 JV1165.Superseded values are not recommended for survey control.
 JV1165
 JV1165.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1165.See file dsdata.pdf to determine how the superseded data were derived.
 JV1165
 JV1165_MARKER: DB = BENCH MARK DISK
 JV1165_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1165_SP_SET: CONCRETE PIER
 JV1165_STAMPING: CC 29 1959
 JV1165_MARK LOGO: CGS
 JV1165_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV1165_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1165
 JV1165  HISTORY     - Date     Condition        Report By
 JV1165  HISTORY     - 1959     MONUMENTED       CGS
 JV1165  HISTORY     - 19970609 GOOD             DMW
 JV1165
 JV1165                          STATION DESCRIPTION
 JV1165
 JV1165'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1165'AT TOWSON.
 JV1165'AT TOWSON, ALONG THE BALTIMORE BELTWAY, ON TOP AND NEAR THE EAST
 JV1165'END OF THE CENTER CONCRETE PIER SUPPORTING THE DOUBLE YORK ROAD
 JV1165'BRIDGE OVER THE BELTWAY, 46 FEET SOUTH OF THE CENTER LINE OF THE
 JV1165'WEST BOUND LANE OF THE BELTWAY, 45 1/2 FEET NORTH OF THE CENTER
 JV1165'LINE OF THE EAST BOUND LANE OF THE BELTWAY, 8.5 FEET WEST OF THE
 JV1165'EAST END OF THE PIER AND 4 FEET ABOVE THE LEVEL OF THE BELTWAY.
 JV1165
 JV1165                          STATION RECOVERY (1997)
 JV1165
 JV1165'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV1165'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0685 ***********************************************************************
 HU0685  DESIGNATION -  CC 55
 HU0685  PID         -  HU0685
 HU0685  STATE/COUNTY-  MD/SOMERSET
 HU0685  COUNTRY     -  US
 HU0685  USGS QUAD   -  POCOMOKE CITY (2016)
 HU0685
 HU0685                         *CURRENT SURVEY CONTROL
 HU0685  ______________________________________________________________________
 HU0685* NAD 83(1986) POSITION- 38 04 50.3    (N) 075 34 34.4    (W)   HD_HELD2
 HU0685* NAVD 88 ORTHO HEIGHT -     2.299 (meters)        7.54  (feet) ADJUSTED
 HU0685  ______________________________________________________________________
 HU0685  GEOID HEIGHT    -        -36.260 (meters)                     GEOID18
 HU0685  DYNAMIC HEIGHT  -          2.297 (meters)        7.54  (feet) COMP
 HU0685  MODELED GRAVITY -    979,974.8   (mgal)                       NAVD 88
 HU0685
 HU0685  VERT ORDER      -  SECOND    CLASS 0
 HU0685
 HU0685.The horizontal coordinates were established by autonomous hand held GPS
 HU0685.observations and have an estimated accuracy of +/- 10 meters.
 HU0685
 HU0685.The orthometric height was determined by differential leveling and
 HU0685.adjusted by the NATIONAL GEODETIC SURVEY
 HU0685.in June 1991.
 HU0685
 HU0685.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0685.GEOID18 height accuracy estimate available here.
 HU0685
 HU0685.Click photographs - Photos may exist for this station.
 HU0685
 HU0685.The dynamic height is computed by dividing the NAVD 88
 HU0685.geopotential number by the normal gravity value computed on the
 HU0685.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0685.degrees latitude (g = 980.6199 gals.).
 HU0685
 HU0685.The modeled gravity was interpolated from observed gravity values.
 HU0685
 HU0685;                    North         East    Units  Estimated Accuracy
 HU0685;SPC MD       -    46,927.      524,917.      MT  (+/- 10 meters HH2 GPS)
 HU0685
 HU0685_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4946414918(NAD 83)
 HU0685
 HU0685                          SUPERSEDED SURVEY CONTROL
 HU0685
 HU0685  NGVD 29 (11/26/84)    2.548  (m)            8.36   (f) ADJUSTED    2 0
 HU0685
 HU0685.Superseded values are not recommended for survey control.
 HU0685
 HU0685.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0685.See file dsdata.pdf to determine how the superseded data were derived.
 HU0685
 HU0685_MARKER: DB = BENCH MARK DISK
 HU0685_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU0685_SP_SET: BOX CULVERT
 HU0685_STAMPING: CC 55 1942
 HU0685_MARK LOGO: CGS
 HU0685_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0685+STABILITY: SURFACE MOTION
 HU0685_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0685+SATELLITE: SATELLITE OBSERVATIONS - October 24, 2019
 HU0685
 HU0685  HISTORY     - Date     Condition        Report By
 HU0685  HISTORY     - 1942     MONUMENTED       CGS
 HU0685  HISTORY     - 1962     GOOD             CGS
 HU0685  HISTORY     - 20191024 GOOD             ARCSHE
 HU0685
 HU0685                          STATION DESCRIPTION
 HU0685
 HU0685'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0685'0.4 MI W FROM POCOMOKE CITY.
 HU0685'IN SOMERSET COUNTY, ABOUT 0.4 MILE WEST ALONG U.S. HIGHWAY 13
 HU0685'FROM THE PENINSULA BUILDING AT POCOMOKE CITY, WORCESTER COUNTY,
 HU0685'THENCE ABOUT 0.2 MILE NORTH ALONG STATE HIGHWAY 364, AT A 6-FOOT
 HU0685'CONCRETE BOX CULVERT, IN THE TOP OF THE NORTH END OF THE WEST HEAD
 HU0685'WALL, 18.1 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT
 HU0685'2 FEET LOWER THAN THE HIGHWAY.  A STANDARD DISK, STAMPED CC 55 1942.
 HU0685
 HU0685                          STATION RECOVERY (2019)
 HU0685
 HU0685'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HU0685'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7985 ***********************************************************************
 AJ7985  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7985  DESIGNATION -  CCCBC
 AJ7985  PID         -  AJ7985
 AJ7985  STATE/COUNTY-  MD/BALTIMORE
 AJ7985  COUNTRY     -  US
 AJ7985  USGS QUAD   -  BALTIMORE WEST (2016)
 AJ7985
 AJ7985                         *CURRENT SURVEY CONTROL
 AJ7985  ______________________________________________________________________
 AJ7985* NAD 83(2011) POSITION- 39 15 05.53030(N) 076 44 07.17538(W)   ADJUSTED
 AJ7985* NAD 83(2011) ELLIP HT-    94.179 (meters)        (06/27/12)   ADJUSTED
 AJ7985* NAD 83(2011) EPOCH   -  2010.00
 AJ7985* NAVD 88 ORTHO HEIGHT -   126.550 (meters)      415.19  (feet) ADJUSTED
 AJ7985  ______________________________________________________________________
 AJ7985  GEOID HEIGHT    -        -32.394 (meters)                     GEOID18
 AJ7985  NAD 83(2011) X  -  1,134,807.322 (meters)                     COMP
 AJ7985  NAD 83(2011) Y  - -4,813,828.137 (meters)                     COMP
 AJ7985  NAD 83(2011) Z  -  4,014,039.780 (meters)                     COMP
 AJ7985  LAPLACE CORR    -         -5.87  (seconds)                    DEFLEC18
 AJ7985  DYNAMIC HEIGHT  -        126.484 (meters)      414.97  (feet) COMP
 AJ7985  MODELED GRAVITY -    980,097.1   (mgal)                       NAVD 88
 AJ7985
 AJ7985  VERT ORDER      -  SECOND    CLASS I
 AJ7985
 AJ7985  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7985  Standards:
 AJ7985         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7985            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7985  -------------------------------------------------------------------
 AJ7985  NETWORK    0.66   1.25           0.30   0.23   0.64      0.02642457
 AJ7985  -------------------------------------------------------------------
 AJ7985  Click here for local accuracies and other accuracy information.
 AJ7985
 AJ7985.The horizontal coordinates were established by GPS observations
 AJ7985.and adjusted by the National Geodetic Survey in June 2012.
 AJ7985
 AJ7985.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7985.been affixed to the stable North American tectonic plate. See 
 AJ7985.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7985
 AJ7985.The horizontal coordinates are valid at the epoch date displayed above
 AJ7985.which is a decimal equivalence of Year/Month/Day.
 AJ7985
 AJ7985.The orthometric height was determined by differential leveling and
 AJ7985.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7985.in November 2003.
 AJ7985
 AJ7985.No vertical observational check was made to the station.
 AJ7985
 AJ7985.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7985.GEOID18 height accuracy estimate available here.
 AJ7985
 AJ7985.Click photographs - Photos may exist for this station.
 AJ7985
 AJ7985.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7985
 AJ7985.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7985
 AJ7985.The ellipsoidal height was determined by GPS observations
 AJ7985.and is referenced to NAD 83.
 AJ7985
 AJ7985.The dynamic height is computed by dividing the NAVD 88
 AJ7985.geopotential number by the normal gravity value computed on the
 AJ7985.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7985.degrees latitude (g = 980.6199 gals.).
 AJ7985
 AJ7985.The modeled gravity was interpolated from observed gravity values.
 AJ7985
 AJ7985. The following values were computed from the NAD 83(2011) position.
 AJ7985
 AJ7985;                    North         East     Units Scale Factor Converg.
 AJ7985;SPC MD       -   175,963.229   422,845.626   MT  0.99997130   +0 09 58.0
 AJ7985;SPC MD       -   577,306.03  1,387,286.02   sFT  0.99997130   +0 09 58.0
 AJ7985;UTM  18      - 4,346,125.404   350,263.908   MT  0.99987607   -1 05 53.5
 AJ7985
 AJ7985!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7985!SPC MD       -   0.99998522  x   0.99997130  =   0.99995652
 AJ7985!UTM  18      -   0.99998522  x   0.99987607  =   0.99986130
 AJ7985
 AJ7985_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5026346125(NAD 83)
 AJ7985
 AJ7985                          SUPERSEDED SURVEY CONTROL
 AJ7985
 AJ7985  NAD 83(2007)-  39 15 05.53057(N)    076 44 07.17621(W) AD(2002.00) 0
 AJ7985  ELLIP H (02/10/07)   94.196  (m)                       GP(2002.00)    
 AJ7985  NAD 83(1991)-  39 15 05.53053(N)    076 44 07.17626(W) AD(       ) A
 AJ7985  ELLIP H (02/12/02)   94.204  (m)                       GP(       ) 4 1
 AJ7985  NAVD 88 (02/12/02)  126.6    (m)  GEOID99  model used  GPS OBS        
 AJ7985
 AJ7985.Superseded values are not recommended for survey control.
 AJ7985
 AJ7985.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7985.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7985
 AJ7985_MARKER: DD = SURVEY DISK
 AJ7985_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7985_STAMPING: CCCBC 2000
 AJ7985_MARK LOGO: MDSHA
 AJ7985_PROJECTION: FLUSH
 AJ7985_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7985+STABILITY: SURFACE MOTION
 AJ7985_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7985+SATELLITE: SATELLITE OBSERVATIONS - August 13, 2020
 AJ7985
 AJ7985  HISTORY     - Date     Condition        Report By
 AJ7985  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ7985  HISTORY     - 20020326 GOOD             MDSHA
 AJ7985  HISTORY     - 20030921 GOOD             USPSQD
 AJ7985  HISTORY     - 20080722 GOOD             GEOMET
 AJ7985  HISTORY     - 20200813 GOOD             MD-005
 AJ7985
 AJ7985                          STATION DESCRIPTION
 AJ7985
 AJ7985'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (NLE)
 AJ7985'THE STATION IS LOCATED ABOUT 3.3 MI (5.3 KM) EAST OF ELLICOTT CITY,
 AJ7985'8.0 MI (12.9 KM) SOUTH SOUTH EAST OF RANDALLSTOWN, AND 2.0 MI (3.2 KM)
 AJ7985'WEST OF ARBUTUS.  TO REACH THE STATION FROM THE INTERSECTION OF MD RTE
 AJ7985'166 (ROLLING ROAD) AND MD RTE 372 (WILKENS AVE) .  GO NORTHWEST ON MD
 AJ7985'166 (ROLLING ROAD) FOR 0.1 MI (0.2 KM) TO COLLEGIATE DRIVE ON THE
 AJ7985'LEFT.  TURN LEFT ONTO COLLEGIATE DRIVE, HEADING SOUTHWEST, AND FOLLOW
 AJ7985'FOR 0.5 MI (0.8 KM) TO A STOP SIGN AT CAMPUS DRIVE.  TURN LEFT ONTO
 AJ7985'CAMPUS DRIVE, HEADING SOUTH, AND FOLOW FOR 0.18 MI (0.29 KM) TO THE
 AJ7985'ENTRANCE TO PARKING LOT E AND A SIGN THAT READS, PARKING FOR L
 AJ7985'BUILDING PHYSICAL DEVELOPMENT CENTER AND R BUILDING OCCUPATIONAL
 AJ7985'TRAINING CENTER, ON THE RIGHT.  TURN RIGHT, HEADING NORTH, AND FOLLOW
 AJ7985'ENTRANCE STRAIGHT AHEAD FOR 0.05 MI (0.08 KM) TO THE END OF THE
 AJ7985'ENTRANCE AT A CONCRETE CURB AND SIDEWALK.  PROCEED STRAIGHT AHEAD
 AJ7985'ACROSS WALK AND GRASS FOR 150 FT (45.7 M) TO THE STATION, 18 FT (5.5
 AJ7985'M) WEST OF THE EDGE OF THE SIDEWALK.  THE STATION IS A STANDARD SHA
 AJ7985'DISK SET INTO THE TOP OF A 1.0 FT (0.3 M) ROUND CONCRETE MONUMENT
 AJ7985'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 82.7 FT (25.2 M)
 AJ7985'SOUTHEAST OF A LAMP POST, 69.0 FT (21.0 M) SOUTH OF A SIX INCH CHERRY
 AJ7985'TREE IN THE CENTER OF A GRASS ISLAND SURROUNDED BY CONCRETE SIDEWALKS,
 AJ7985'177.1 FT (54.0 M) SOUTHWEST OF THE SOUTHWEST CORNER OF CLASSROOM
 AJ7985'TRAILER T105, AND 21.5 FT (6.6 M) NORTHWEST OF A LAMP POST.
 AJ7985
 AJ7985                          STATION RECOVERY (2002)
 AJ7985
 AJ7985'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 AJ7985'RECOVERED AS DESCRIBED.
 AJ7985
 AJ7985                          STATION RECOVERY (2003)
 AJ7985
 AJ7985'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 AJ7985'RECOVERED IN GOOD CONDITION.  NOTE--THE ORANGE FIBERGLASS WITNESS POST
 AJ7985'IS BROKEN OFF AT GROUND LEVEL AND LYING ON THE GROUND.
 AJ7985
 AJ7985                          STATION RECOVERY (2008)
 AJ7985
 AJ7985'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2008 (KRO)
 AJ7985'RECOVERED IN GOOD CONDITION.
 AJ7985
 AJ7985                          STATION RECOVERY (2020)
 AJ7985
 AJ7985'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (TSS)
 AJ7985'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4725 ***********************************************************************
 JV4725  DESIGNATION -  CEARFOSS
 JV4725  PID         -  JV4725
 JV4725  STATE/COUNTY-  MD/WASHINGTON
 JV4725  COUNTRY     -  US
 JV4725  USGS QUAD   -  MASON AND DIXON (2019)
 JV4725
 JV4725                         *CURRENT SURVEY CONTROL
 JV4725  ______________________________________________________________________
 JV4725* NAD 83(1991) POSITION- 39 42 03.15075(N) 077 47 02.91168(W)   ADJUSTED
 JV4725* NAVD 88 ORTHO HEIGHT -   166.    (meters)      545.    (feet) SCALED
 JV4725  ______________________________________________________________________
 JV4725  GEOID HEIGHT    -        -34.314 (meters)                     GEOID18
 JV4725  LAPLACE CORR    -          1.40  (seconds)                    DEFLEC18
 JV4725  HORZ ORDER      -  SECOND
 JV4725
 JV4725.The horizontal coordinates were established by classical geodetic methods
 JV4725.and adjusted by the National Geodetic Survey in January 1992.
 JV4725
 JV4725.The orthometric height was scaled from a topographic map.
 JV4725
 JV4725.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4725.GEOID18 height accuracy estimate available here.
 JV4725
 JV4725.Click photographs - Photos may exist for this station.
 JV4725
 JV4725.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4725
 JV4725. The following values were computed from the NAD 83(1991) position.
 JV4725
 JV4725;                    North         East     Units Scale Factor Converg.
 JV4725;SPC MD       -   226,107.003   332,745.044   MT  1.00005353   -0 29 31.8
 JV4725;SPC MD       -   741,819.39  1,091,681.03   sFT  1.00005353   -0 29 31.8
 JV4725;SPC PA S     -    40,810.825   597,071.660   MT  1.00004448   -0 01 19.7
 JV4725;SPC PA S     -   133,893.52  1,958,892.60   sFT  1.00004448   -0 01 19.7
 JV4725;SPC WV N     -   134,723.370   747,143.519   MT  0.99994159   +1 05 39.6
 JV4725;SPC WV N     -   442,004.92  2,451,253.36   sFT  0.99994159   +1 05 39.6
 JV4725;UTM  18      - 4,398,264.437   261,295.264   MT  1.00030156   -1 46 45.5
 JV4725
 JV4725!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4725!SPC MD       -   0.99997937  x   1.00005353  =   1.00003290
 JV4725!SPC PA S     -   0.99997937  x   1.00004448  =   1.00002385
 JV4725!SPC WV N     -   0.99997937  x   0.99994159  =   0.99992096
 JV4725!UTM  18      -   0.99997937  x   1.00030156  =   1.00028093
 JV4725
 JV4725:                Primary Azimuth Mark                     Grid Az
 JV4725:SPC MD       -  CEARFOSS AZ MK                           104 49 20.9
 JV4725:SPC PA S     -  CEARFOSS AZ MK                           104 21 08.8
 JV4725:SPC WV N     -  CEARFOSS AZ MK                           103 14 09.5
 JV4725:UTM  18      -  CEARFOSS AZ MK                           106 06 34.6
 JV4725
 JV4725_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6129598264(NAD 83)
 JV4725
 JV4725|---------------------------------------------------------------------|
 JV4725| PID    Reference Object                     Distance      Geod. Az  |
 JV4725|                                                           dddmmss.s |
 JV4725| CK6781 CEARFOSS RM 2                         6.791 METERS 01909     |
 JV4725| JV4671 FORT RITCHIE SITE A TANK            APPROX. 8.6 KM 0430016.2 |
 JV4725| CK6780 CEARFOSS RM 1                        44.443 METERS 07657     |
 JV4725| JV4722 CEARFOSS AZ MK                      APPROX. 0.7 KM 1041949.1 |
 JV4725|---------------------------------------------------------------------|
 JV4725
 JV4725                          SUPERSEDED SURVEY CONTROL
 JV4725
 JV4725  NAD 83(1986)-  39 42 03.14946(N)    077 47 02.92144(W) AD(       ) 2
 JV4725  NAD 27      -  39 42 02.80900(N)    077 47 03.94300(W) AD(       ) 2
 JV4725
 JV4725.Superseded values are not recommended for survey control.
 JV4725
 JV4725.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4725.See file dsdata.pdf to determine how the superseded data were derived.
 JV4725
 JV4725_MARKER: DS = TRIANGULATION STATION DISK
 JV4725_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4725_STAMPING: CEARFOSS 1955
 JV4725_MARK LOGO: CGS
 JV4725_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4725+STABILITY: SURFACE MOTION
 JV4725
 JV4725  HISTORY     - Date     Condition        Report By
 JV4725  HISTORY     - 1955     MONUMENTED       CGS
 JV4725  HISTORY     - 1967     SEE DESCRIPTION  CGS
 JV4725  HISTORY     - 20080517 MARK NOT FOUND   GEOCAC
 JV4725
 JV4725                          STATION DESCRIPTION
 JV4725
 JV4725'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4725'THE STATION IS ABOUT 5 MILES NORTHWEST OF HAGERSTOWN AND 1/2 MILE
 JV4725'WEST OF THE TOWN OF CEARFOSS, ON THE HIGHEST POINT OF A CULTIVATED
 JV4725'FIELD OWNED BY HEDE MARTIN, AND ADJACENT TO A WINDMILL AND A
 JV4725'CISTERN.  IT IS ABOUT 100 YARDS SOUTH OF STATE HIGHWAY 494, 32
 JV4725'FEET SOUTH OF THE WINDMILL, 8 FEET SOUTH OF THE SOUTHWEST CORNER
 JV4725'OF THE CONCRETE COVER OF THE CISTERN AND 4 FEET SOUTHWEST OF A
 JV4725'4 IN X 4 IN WHITE WITNESS POST.
 JV4725'
 JV4725'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 398 AND
 JV4725'494 AT THE SOUTH EDGE OF CEARFOSS, GO WEST ON STATE HIGHWAY 494
 JV4725'FOR 0.5 MILE TO A GATE ON THE LEFT, TURN LEFT AND GO SOUTH FOR
 JV4725'ABOUT 100 YARDS TO THE HIGHEST POINT AND THE STATION.
 JV4725'
 JV4725'THE STATION MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED
 JV4725'CEARFOSS 1955.
 JV4725'
 JV4725'REFERENCE MARK 1 IS 3 FEET NORTH OF A POWERLINE POLE AND 2 FEET
 JV4725'WEST OF A FENCE.  THE MARK PROJECTS 6 INCHES, AND THE DISK IS
 JV4725'STAMPED CEARFOSS NO 1 1955.
 JV4725'
 JV4725'REFERENCE MARK 2 IS SET IN A DRILLED HOLE IN THE NORTHWEST CORNER
 JV4725'OF THE CONCRETE COVER OF THE CISTERN AND 12 FEET SOUTHWEST OF THE
 JV4725'WINDMILL.  THE DISK IS STAMPED CEARFOSS NO 2 1955.
 JV4725'
 JV4725'THE AZIMUTH MARK IS ABOUT 100 FEET NORTHWEST OF THE JUNCTION OF
 JV4725'HIGHWAYS 398 AND 494 MENTIONED ABOVE, 16 FEET WEST OF THE CENTER OF
 JV4725'HIGHWAY 398, 6 FEET WEST OF A FENCE CORNER AND 2 FEET SOUTHEAST
 JV4725'OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK PROJECTS 4 INCHES,
 JV4725'AND THE DISK IS STAMPED CEARFOSS 1955.
 JV4725'
 JV4725'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4725
 JV4725                          STATION RECOVERY (1967)
 JV4725
 JV4725'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JCB)
 JV4725'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO BE
 JV4725'IN GOOD CONDITION.  THE AREA IN THE VICINITY OF STATION HAS BEEN
 JV4725'DIVIDED INTO BUILDING LOTS AND THE PROPERTY OWNER REQUESTED THAT
 JV4725'THE STATION MARK AND REFERENCE MARKS BE RELOCATED.  THE NEW
 JV4725'STATION WAS ESTABLISHED ON LINE TO THE AZIMUTH MARK AND THE
 JV4725'DISTANCE MEASURED WITH A TELLUROMETER BY THE STATE HIGHWAY
 JV4725'DEPARTMENT.  THE REFERENCE MARKS WERE DESTROYED BUT THE STATION
 JV4725'MARK WAS LEFT IN POSITION.  STATION MARK MAY NOT BE DISTURBED
 JV4725'BUT WILL BE IN FRONT LAWN OF HOME.  A DIFFERENCE WAS FOUND IN
 JV4725'THE DIRECTION TO FT. RITCHIE SITE A TANK AND IN THE
 JV4725'DIRECTION TO REFERENCE MARK NO. 1.  THE DIRECTION TO
 JV4725'REFERENCE MARK NO. 2 AND THE DISTANCE TO THE REFERENCE MARKS
 JV4725'WAS CHECKED AND FOUND TO BE CORRECT.
 JV4725'
 JV4725'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4725'1/2 MILE WEST OF CEARFOSS.
 JV4725
 JV4725                          STATION RECOVERY (2008)
 JV4725
 JV4725'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV4725'SOUTH ALONG LEON DRIVE.  THE PROPERTY OWNER REMEMBERS THE MARK BEING
 JV4725'MENTIONED IN HIS DEED BUT DOES NOT RECALL EVER SEEING IT.  TWO LARGE
 JV4725'TREES WERE REMOVED FROM THE PROXIMITY OF THE MARK AND THE AREA WAS
 JV4725'GRADED AND RESEEDED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4721 ***********************************************************************
 JV4721  DESIGNATION -  CEARFOSS 2
 JV4721  PID         -  JV4721
 JV4721  STATE/COUNTY-  MD/WASHINGTON
 JV4721  COUNTRY     -  US
 JV4721  USGS QUAD   -  MASON AND DIXON (2019)
 JV4721
 JV4721                         *CURRENT SURVEY CONTROL
 JV4721  ______________________________________________________________________
 JV4721* NAD 83(1991) POSITION- 39 42 01.29954(N) 077 46 53.52597(W)   NO CHECK
 JV4721* NAVD 88 ORTHO HEIGHT -   175.    (meters)      574.    (feet) SCALED
 JV4721  ______________________________________________________________________
 JV4721  GEOID HEIGHT    -        -34.312 (meters)                     GEOID18
 JV4721  LAPLACE CORR    -          1.47  (seconds)                    DEFLEC18
 JV4721  HORZ ORDER      -  THIRD
 JV4721
 JV4721.The horizontal coordinates were established by classical geodetic methods
 JV4721.and adjusted by the National Geodetic Survey in January 1992.
 JV4721
 JV4721.No horizontal observational check was made to the station.
 JV4721
 JV4721.The orthometric height was scaled from a topographic map.
 JV4721
 JV4721.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4721.GEOID18 height accuracy estimate available here.
 JV4721
 JV4721.Click photographs - Photos may exist for this station.
 JV4721
 JV4721.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4721
 JV4721. The following values were computed from the NAD 83(1991) position.
 JV4721
 JV4721;                    North         East     Units Scale Factor Converg.
 JV4721;SPC MD       -   226,047.991   332,968.161   MT  1.00005340   -0 29 25.9
 JV4721;SPC MD       -   741,625.78  1,092,413.04   sFT  1.00005340   -0 29 25.9
 JV4721;UTM  18      - 4,398,200.412   261,517.054   MT  1.00030026   -1 46 39.4
 JV4721
 JV4721!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4721!SPC MD       -   0.99997796  x   1.00005340  =   1.00003136
 JV4721!UTM  18      -   0.99997796  x   1.00030026  =   1.00027821
 JV4721
 JV4721:                Primary Azimuth Mark                     Grid Az
 JV4721:SPC MD       -  CEARFOSS AZ MK                           104 49 35.4
 JV4721:UTM  18      -  CEARFOSS AZ MK                           106 06 48.9
 JV4721
 JV4721_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6151798200(NAD 83)
 JV4721
 JV4721|---------------------------------------------------------------------|
 JV4721| PID    Reference Object                     Distance      Geod. Az  |
 JV4721|                                                           dddmmss.s |
 JV4721| JV4722 CEARFOSS AZ MK                      432.413 METERS 1042009.5 |
 JV4721| CK6783 CEARFOSS 2 RM 4                      20.080 METERS 21005     |
 JV4721| JV4725 CEARFOSS                            230.777 METERS 28419     |
 JV4721|---------------------------------------------------------------------|
 JV4721
 JV4721                          SUPERSEDED SURVEY CONTROL
 JV4721
 JV4721  NAD 83(1986)-  39 42 01.29826(N)    077 46 53.53572(W) AD(       ) 3
 JV4721  NAD 27      -  39 42 00.95689(N)    077 46 54.55818(W) AD(       ) 3
 JV4721
 JV4721.Superseded values are not recommended for survey control.
 JV4721
 JV4721.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4721.See file dsdata.pdf to determine how the superseded data were derived.
 JV4721
 JV4721_MARKER: DS = TRIANGULATION STATION DISK
 JV4721_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4721_STAMPING: CEARFOSS 2 1967
 JV4721_MARK LOGO: CGS
 JV4721_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4721+STABILITY: SURFACE MOTION
 JV4721
 JV4721  HISTORY     - Date     Condition        Report By
 JV4721  HISTORY     - 1967     MONUMENTED       CGS
 JV4721
 JV4721                          STATION DESCRIPTION
 JV4721
 JV4721'DESCRIBED BY COAST AND GEODETIC SURVEY 1967 (JCB)
 JV4721'STATION IS LOCATED ABOUT 5 MILES NORTHWEST OF HAGERSTOWN AND
 JV4721'1/2 MILE WEST OF CEARFOSS ON THE PROPERTY OF MR. HEGE
 JV4721'MARTIN.  STATION IS SOUTHWEST OF THE FARM BUILDINGS, 66 FEET
 JV4721'SOUTHWEST OF FENCE CORNER AND 5.5 FEET SOUTHEAST OF WIRE FENCE
 JV4721'ALONG FARM LANE AND STEEL WITNESS POST.  THE MARK IS A STANDARD
 JV4721'DISK SET FLUSH IN A CONCRETE MONUMENT FLUSH WITH THE GROUND AND
 JV4721'THE DISK IS STAMPED CEARFOSS 2 1967.
 JV4721'
 JV4721'TO REACH STATION FROM THE JUNCTION OF STATE HIGHWAYS 63 AND
 JV4721'494 AT THE SOUTH EDGE OF CEARFOSS GO WEST ON STATE HIGHWAY 494
 JV4721'FOR 0.4 MILE TO THE FARM HOME OF MR. HEGE MARTIN ON LEFT.  TURN
 JV4721'LEFT ON DRIVEWAY PASSING FARM BUILDINGS FOR ABOUT 100 YARDS TO
 JV4721'STATION AS DESCRIBED.
 JV4721'
 JV4721'REFERENCE MARK NO. 3 IS 4 FEET NORTHEAST OF FENCE CORNER.  THE
 JV4721'MARK IS A STANDARD DISK SET FLUSH IN A CONCRETE MONUMENT FLUSH
 JV4721'WITH THE GROUND AND THE DISK IS STAMPED CEARFOSS 2 NO 3 1967.
 JV4721'
 JV4721'REFERENCE MARK NO. 4 IS 5.5 FEET SOUTHEAST OF WIRE FENCE.  THE
 JV4721'MARK IS A STANDARD DISK SET FLUSH IN A CONCRETE MONUMENT FLUSH
 JV4721'WITH THE GROUND AND THE DISK IS STAMPED CEARFOSS 2 NO 4 1967.
 JV4721'
 JV4721'AZIMUTH MARK IS 196 FEET SOUTH OF THE JUNCTION OF STATE
 JV4721'HIGHWAYS 63 AND 494, 16 FEET EAST OF THE CENTERLINE OF STATE
 JV4721'HIGHWAY 63, 6 FEET SOUTHWEST OF FENCE CORNER AND 1.5 FEET SOUTH
 JV4721'OF HIGHWAY SIGNPOST.  THE MARK IS A STANDARD DISK SET FLUSH IN
 JV4721'A CONCRETE POST, PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED
 JV4721'CEARFOSS 1955.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4722 ***********************************************************************
 JV4722  DESIGNATION -  CEARFOSS AZ MK
 JV4722  PID         -  JV4722
 JV4722  STATE/COUNTY-  MD/WASHINGTON
 JV4722  COUNTRY     -  US
 JV4722  USGS QUAD   -  MASON AND DIXON (2019)
 JV4722
 JV4722                         *CURRENT SURVEY CONTROL
 JV4722  ______________________________________________________________________
 JV4722* NAD 83(1991) POSITION- 39 41 57.82758(N) 077 46 35.94102(W)   ADJUSTED
 JV4722* NAVD 88 ORTHO HEIGHT -   155.    (meters)      509.    (feet) SCALED
 JV4722  ______________________________________________________________________
 JV4722  GEOID HEIGHT    -        -34.308 (meters)                     GEOID18
 JV4722  LAPLACE CORR    -          1.66  (seconds)                    DEFLEC18
 JV4722  HORZ ORDER      -  SECOND
 JV4722
 JV4722.The horizontal coordinates were established by classical geodetic methods
 JV4722.and adjusted by the National Geodetic Survey in January 1992.
 JV4722
 JV4722.The orthometric height was scaled from a topographic map.
 JV4722
 JV4722.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4722.GEOID18 height accuracy estimate available here.
 JV4722
 JV4722.Click photographs - Photos may exist for this station.
 JV4722
 JV4722.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4722
 JV4722. The following values were computed from the NAD 83(1991) position.
 JV4722
 JV4722;                    North         East     Units Scale Factor Converg.
 JV4722;SPC MD       -   225,937.333   333,386.199   MT  1.00005315   -0 29 14.8
 JV4722;SPC MD       -   741,262.73  1,093,784.55   sFT  1.00005315   -0 29 14.8
 JV4722;UTM  18      - 4,398,080.364   261,932.603   MT  1.00029782   -1 46 28.0
 JV4722
 JV4722!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4722!SPC MD       -   0.99998110  x   1.00005315  =   1.00003425
 JV4722!UTM  18      -   0.99998110  x   1.00029782  =   1.00027891
 JV4722
 JV4722_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6193298080(NAD 83)
 JV4722
 JV4722                          SUPERSEDED SURVEY CONTROL
 JV4722
 JV4722  NAD 83(1986)-  39 41 57.82632(N)    077 46 35.95082(W) AD(       ) 2
 JV4722  NAD 27      -  39 41 57.48592(N)    077 46 36.97398(W) AD(       ) 2
 JV4722
 JV4722.Superseded values are not recommended for survey control.
 JV4722
 JV4722.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4722.See file dsdata.pdf to determine how the superseded data were derived.
 JV4722
 JV4722_MARKER: DZ = AZIMUTH MARK DISK
 JV4722_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4722_STAMPING: CEARFOSS 1955
 JV4722_MARK LOGO: CGS
 JV4722_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4722+STABILITY: SURFACE MOTION
 JV4722_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4722+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2008
 JV4722
 JV4722  HISTORY     - Date     Condition        Report By
 JV4722  HISTORY     - 1967     MONUMENTED       CGS
 JV4722  HISTORY     - 20080726 GOOD             GEOCAC
 JV4722
 JV4722                          STATION DESCRIPTION
 JV4722
 JV4722'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JV4722'STATION CEARFOSS IS ABOUT 5 MILES NORTHWEST OF HAGERSTOWN AND 1/2 MILE
 JV4722'WEST OF THE TOWN OF CEARFOSS, ON THE HIGHEST POINT OF A CULTIVATED
 JV4722'FIELD OWNED BY HEDE MARTIN, AND ADJACENT TO A WINDMILL AND A
 JV4722'CISTERN.  IT IS ABOUT 100 YARDS SOUTH OF STATE HIGHWAY 494, 32
 JV4722'FEET SOUTH OF THE WINDMILL, 8 FEET SOUTH OF THE SOUTHWEST CORNER
 JV4722'OF THE CONCRETE COVER OF THE CISTERN AND 4 FEET SOUTHWEST OF A
 JV4722'4 IN X 4 IN WHITE WITNESS POST.
 JV4722'
 JV4722'TO REACH STATION CEARFOSS FROM THE JUNCTION OF STATE HIGHWAYS 398 AND
 JV4722'494 AT THE SOUTH EDGE OF CEARFOSS, GO WEST ON STATE HIGHWAY 494
 JV4722'FOR 0.5 MILE TO A GATE ON THE LEFT, TURN LEFT AND GO SOUTH FOR
 JV4722'ABOUT 100 YARDS TO THE HIGHEST POINT AND THE STATION.
 JV4722'
 JV4722'THE AZIMUTH MARK IS ABOUT 100 FEET NORTHWEST OF THE JUNCTION OF
 JV4722'HIGHWAYS 398 AND 494 MENTIONED ABOVE, 16 FEET WEST OF THE CENTER OF
 JV4722'HIGHWAY 398, 6 FEET WEST OF A FENCE CORNER AND 2 FEET SOUTHEAST
 JV4722'OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK PROJECTS 4 INCHES,
 JV4722'AND THE DISK IS STAMPED CEARFOSS 1955.
 JV4722
 JV4722                          STATION RECOVERY (2008)
 JV4722
 JV4722'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV4722'THE MARK IS AS DESCRIBED, DIRECTLY ACROSS THE HIGHWAY FROM THE WEST
 JV4722'SIDE OF THE SOUTH ENTRY DRIVE TO THE YORK COUNTRY STORE.  THE FACE OF
 JV4722'THE DISK IS SCORED. 'CEARFOSS' IS BARELY READABLE.  THERE IS NO
 JV4722'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4122 ***********************************************************************
 JU4122  CBN         -  This is a Cooperative Base Network Control Station.
 JU4122  DESIGNATION -  CECIL
 JU4122  PID         -  JU4122
 JU4122  STATE/COUNTY-  MD/CECIL
 JU4122  COUNTRY     -  US
 JU4122  USGS QUAD   -  BAY VIEW (2016)
 JU4122
 JU4122                         *CURRENT SURVEY CONTROL
 JU4122  ______________________________________________________________________
 JU4122* NAD 83(2011) POSITION- 39 38 35.55838(N) 075 57 29.00196(W)   ADJUSTED
 JU4122* NAD 83(2011) ELLIP HT-    71.251 (meters)        (06/27/12)   ADJUSTED
 JU4122* NAD 83(2011) EPOCH   -  2010.00
 JU4122* NAVD 88 ORTHO HEIGHT -   104.320 (meters)      342.26  (feet) ADJUSTED
 JU4122  ______________________________________________________________________
 JU4122  GEOID HEIGHT    -        -33.076 (meters)                     GEOID18
 JU4122  NAD 83(2011) X  -  1,193,296.839 (meters)                     COMP
 JU4122  NAD 83(2011) Y  - -4,771,169.872 (meters)                     COMP
 JU4122  NAD 83(2011) Z  -  4,047,605.284 (meters)                     COMP
 JU4122  LAPLACE CORR    -         -1.08  (seconds)                    DEFLEC18
 JU4122  DYNAMIC HEIGHT  -        104.269 (meters)      342.09  (feet) COMP
 JU4122  MODELED GRAVITY -    980,130.6   (mgal)                       NAVD 88
 JU4122
 JU4122  VERT ORDER      -  SECOND    CLASS II
 JU4122
 JU4122  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4122  Standards:
 JU4122         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4122            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4122  -------------------------------------------------------------------
 JU4122  NETWORK    0.27   0.59           0.12   0.10   0.30     -0.04428322
 JU4122  -------------------------------------------------------------------
 JU4122  Click here for local accuracies and other accuracy information.
 JU4122
 JU4122.The horizontal coordinates were established by GPS observations
 JU4122.and adjusted by the National Geodetic Survey in June 2012.
 JU4122
 JU4122.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4122.been affixed to the stable North American tectonic plate. See 
 JU4122.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4122
 JU4122.The horizontal coordinates are valid at the epoch date displayed above
 JU4122.which is a decimal equivalence of Year/Month/Day.
 JU4122
 JU4122.The orthometric height was determined by differential leveling and
 JU4122.adjusted by the NATIONAL GEODETIC SURVEY
 JU4122.in April 1995.
 JU4122
 JU4122.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4122.GEOID18 height accuracy estimate available here.
 JU4122
 JU4122.Click photographs - Photos may exist for this station.
 JU4122
 JU4122.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4122
 JU4122.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4122
 JU4122.The ellipsoidal height was determined by GPS observations
 JU4122.and is referenced to NAD 83.
 JU4122
 JU4122.The dynamic height is computed by dividing the NAVD 88
 JU4122.geopotential number by the normal gravity value computed on the
 JU4122.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4122.degrees latitude (g = 980.6199 gals.).
 JU4122
 JU4122.The modeled gravity was interpolated from observed gravity values.
 JU4122
 JU4122. The following values were computed from the NAD 83(2011) position.
 JU4122
 JU4122;                    North         East     Units Scale Factor Converg.
 JU4122;SPC MD       -   219,925.875   489,438.549   MT  1.00003951   +0 39 14.3
 JU4122;SPC MD       -   721,540.14  1,605,766.31   sFT  1.00003951   +0 39 14.3
 JU4122;UTM  18      - 4,388,596.822   417,795.863   MT  0.99968319   -0 36 40.6
 JU4122
 JU4122!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4122!SPC MD       -   0.99998882  x   1.00003951  =   1.00002833
 JU4122!UTM  18      -   0.99998882  x   0.99968319  =   0.99967202
 JU4122
 JU4122_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1779588596(NAD 83)
 JU4122
 JU4122                          SUPERSEDED SURVEY CONTROL
 JU4122
 JU4122  ELLIP H (02/23/12)   71.264  (m)                       GP(       ) 4 1
 JU4122  NAD 83(2007)-  39 38 35.55876(N)    075 57 29.00267(W) AD(2002.00) 0
 JU4122  ELLIP H (02/10/07)   71.294  (m)                       GP(2002.00)    
 JU4122  ELLIP H (02/12/02)   71.297  (m)                       GP(       ) 4 1
 JU4122  ELLIP H (12/03/93)   71.310  (m)                       GP(       ) 4 1
 JU4122  NAD 83(1991)-  39 38 35.55862(N)    075 57 29.00336(W) AD(       ) B
 JU4122  ELLIP H (10/23/91)   71.312  (m)                       GP(       ) 4 1
 JU4122  NAVD 88             104.32   (m)          342.3    (f) LEVELING    3  
 JU4122  NGVD 29             104.63   (m)          343.3    (f) LEVELING    3  
 JU4122  NGVD 29             104.60   (m)          343.2    (f) LEVELING    3  
 JU4122  NGVD 29             104.63   (m)          343.3    (f) LEVELING    3  
 JU4122
 JU4122.Superseded values are not recommended for survey control.
 JU4122
 JU4122.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4122.See file dsdata.pdf to determine how the superseded data were derived.
 JU4122
 JU4122_MARKER: DH = HORIZONTAL CONTROL DISK
 JU4122_SETTING: 66 = SET IN ROCK OUTCROP
 JU4122_STAMPING: CECIL 1990
 JU4122_MARK LOGO: NGS
 JU4122_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4122_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JU4122+STABILITY: POSITION/ELEVATION WELL
 JU4122_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4122+SATELLITE: SATELLITE OBSERVATIONS - October 13, 2020
 JU4122
 JU4122  HISTORY     - Date     Condition        Report By
 JU4122  HISTORY     - 1990     MONUMENTED       NGS
 JU4122  HISTORY     - 19901019 GOOD             NGS
 JU4122  HISTORY     - 19910101 GOOD             NGS
 JU4122  HISTORY     - 19911112 GOOD             MDSHA
 JU4122  HISTORY     - 19930511 GOOD             NOS
 JU4122  HISTORY     - 20000327 GOOD             MDSHA
 JU4122  HISTORY     - 20020929 GOOD             JCLS
 JU4122  HISTORY     - 20021001 GOOD             JCLS
 JU4122  HISTORY     - 20051120 GOOD             JMT
 JU4122  HISTORY     - 20070104 GOOD             GPSSS
 JU4122  HISTORY     - 20080622 GOOD             JMTMD
 JU4122  HISTORY     - 20090309 GOOD             GWS
 JU4122  HISTORY     - 20100901 GOOD             JCLS
 JU4122  HISTORY     - 20120210 GOOD             MD-015
 JU4122  HISTORY     - 20140618 GOOD             JCLS
 JU4122  HISTORY     - 20201013 GOOD             NGS
 JU4122
 JU4122                          STATION DESCRIPTION
 JU4122
 JU4122'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JU4122'0.3 KM (0.2 MI) NORTHERLY ALONG STATE HIGHWAY 272 FROM THE JUNCTION OF
 JU4122'STATE HIGHWAY 274 AT THE SOUTHEAST EDGE OF BAY VIEW, NEAR THE CENTER
 JU4122'OF A 5 BY 8 FOOT AREA OF OUTCROPPING BEDROCK NEAR THE NORTH END OF
 JU4122'THE CECIL COMMUNITY COLLEGE LAWN, 75.7 M (248.4 FT) WEST OF THE
 JU4122'NORTHWEST CORNER OF THE MAINTENANCE BUILDING, 47.7 M (156.5 FT) EAST
 JU4122'OF THE HIGHWAY CENTERLINE, 12.2 M (40.0 FT) SOUTH OF A WITNESS POST,
 JU4122'4.0 M (13.1 FT) ABOVE THE LEVEL OF THE HIGHWAY, AND 0.4 M (1.3 FT)
 JU4122'ABOVE THE GROUND SURFACE.
 JU4122
 JU4122                          STATION RECOVERY (1991)
 JU4122
 JU4122'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JU4122'STATION IS LOCATED ABOUT 11 KM (6.8 MI) NORTHWEST OF ELKTON, 6 KM
 JU4122'(3.7 MI) NORTH OF NORTH EAST, 1.2 KM (0.7 MI) NORTH OF EXIT 100 OF
 JU4122'INTERSTATE HIGHWAY 95, IN A LARGE ROCK OUTCROP NEAR THE NORTHWEST
 JU4122'CORNER OF THE CECIL COMMUNITY COLLEGE GROUNDS, JUST WEST OF THE
 JU4122'MAINTAINANCE BUILDING, AND ON A SLOPE JUST EAST OF HIGHWAY 272.
 JU4122'OWNERSHIP--CECIL COMMUNITY COLLEGE.
 JU4122'TO REACH FROM THE JUNCTION OF INTERSTATE HIGHWAY 95 AND STATE HIGHWAY
 JU4122'272 (EXIT 100), ABOUT 5 KM (3.1 MI) NORTH OF NORTH EAST, GO NORTH ON
 JU4122'STATE HIGHWAY 272 FOR 0.97 KM (0.60 MI) TO STATE HIGHWAY 274 ON THE
 JU4122'LEFT.  CONTINUE AHEAD FOR 0.14 KM (0.09 MI) TO BEGINNING OF CUTBANK
 JU4122'ON THE RIGHT.  BEAR RIGHT ONTO GRASS, THEN LEFT, NORTH, PARALLELING
 JU4122'HIGHWAY FOR 0.12 KM (0.07 MI) TO THE STATION ON THE RIGHT, JUST
 JU4122'BEFORE REACHING THE PERIMETER FENCE.
 JU4122'STATION MARK IS SET IN A DRILL HOLE IN THE TOP CENTER OF A
 JU4122'TRIANGULAR-SHAPED OUTCROP THAT IS 2.5 M (8.2 FT) ON EACH SIDE AND
 JU4122'PROJECTING 0.4 M.  IT IS 32.5 M (106.6 FT) EAST-SOUTHEAST OF THE
 JU4122'HIGHWAY CUTBANK EDGE, 12.0 M (39.4 FT) SOUTH-SOUTHWEST OF A
 JU4122'FIBERGLASS WITNESS POST AT THE BRUSH LINE, AND 41.1 M (134.8 FT) EAST
 JU4122'OF A 20-CM CEDAR TREE ALONG THE CUTBANK.
 JU4122'DESCRIBED BY G.R.HEID.
 JU4122
 JU4122                          STATION RECOVERY (1991)
 JU4122
 JU4122'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4122'RECOVERED IN GOOD CONDITION.
 JU4122
 JU4122                          STATION RECOVERY (1993)
 JU4122
 JU4122'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1993
 JU4122'RECOVERED IN GOOD CONDITION.
 JU4122
 JU4122                          STATION RECOVERY (2000)
 JU4122
 JU4122'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JU4122'RECOVERED AS DESCRIBED.
 JU4122
 JU4122                          STATION RECOVERY (2002)
 JU4122
 JU4122'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2002 (MRY)
 JU4122'RECOVERED IN GOOD CONDITION.
 JU4122
 JU4122                          STATION RECOVERY (2002)
 JU4122
 JU4122'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2002
 JU4122'RECOVERED IN GOOD CONDITION.
 JU4122
 JU4122                          STATION RECOVERY (2005)
 JU4122
 JU4122'RECOVERY NOTE BY JOHNSON MIRMIRAN AND THOMPSON PA 2005
 JU4122'RECOVERED IN GOOD CONDITION.
 JU4122
 JU4122                          STATION RECOVERY (2007)
 JU4122
 JU4122'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (DL)
 JU4122'RECOVERED BY DEWEY LILLEY OF NORTHERN BAY SURVEYORS
 JU4122
 JU4122                          STATION RECOVERY (2008)
 JU4122
 JU4122'RECOVERY NOTE BY JMT ENGINEERING 2008 (BB)
 JU4122'RECOVERED AS DESCRIBED.
 JU4122
 JU4122                          STATION RECOVERY (2009)
 JU4122
 JU4122'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (JMS)
 JU4122'RECOVERED AS DESCRIBED.
 JU4122
 JU4122                          STATION RECOVERY (2010)
 JU4122
 JU4122'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2010
 JU4122'RECOVERED IN GOOD CONDITION.
 JU4122
 JU4122                          STATION RECOVERY (2012)
 JU4122
 JU4122'RECOVERY NOTE BY CECIL COUNTY MARYLAND 2012 (DRB)
 JU4122'RECOVERED IN GOOD CONDITION.
 JU4122
 JU4122                          STATION RECOVERY (2014)
 JU4122
 JU4122'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2014 (MRY)
 JU4122'RECOVERED IN GOOD CONDITION.
 JU4122
 JU4122                          STATION RECOVERY (2020)
 JU4122
 JU4122'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (PH)
 JU4122'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6828 ***********************************************************************
 HV6828  DESIGNATION -  CECIL MSFC 1908
 HV6828  PID         -  HV6828
 HV6828  STATE/COUNTY-  MD/ST MARYS
 HV6828  COUNTRY     -  US
 HV6828  USGS QUAD   -  LEONARDTOWN (2016)
 HV6828
 HV6828                         *CURRENT SURVEY CONTROL
 HV6828  ______________________________________________________________________
 HV6828* NAD 83(1993) POSITION- 38 16 53.13004(N) 076 42 34.91987(W)   ADJUSTED
 HV6828* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6828  ______________________________________________________________________
 HV6828  GEOID HEIGHT    -        -33.767 (meters)                     GEOID18
 HV6828  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 HV6828  HORZ ORDER      -  THIRD
 HV6828
 HV6828.The horizontal coordinates were established by classical geodetic methods
 HV6828.and adjusted by the National Geodetic Survey in November 1994.
 HV6828
 HV6828.The orthometric height was scaled from a topographic map.
 HV6828
 HV6828.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6828.GEOID18 height accuracy estimate available here.
 HV6828
 HV6828.Click photographs - Photos may exist for this station.
 HV6828
 HV6828.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6828
 HV6828. The following values were computed from the NAD 83(1993) position.
 HV6828
 HV6828;                    North         East     Units Scale Factor Converg.
 HV6828;SPC MD       -    68,281.377   425,400.059   MT  1.00000328   +0 10 55.9
 HV6828;SPC MD       -   224,019.82  1,395,666.69   sFT  1.00000328   +0 10 55.9
 HV6828;SPC VA N     - 2,069,764.081 3,656,628.302   MT  0.99996549   +1 07 02.5
 HV6828;SPC VA N     - 6,790,550.99 11,996,788.02   sFT  0.99996549   +1 07 02.5
 HV6828;UTM  18      - 4,238,422.900   350,463.152   MT  0.99987539   -1 03 33.8
 HV6828
 HV6828!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6828!SPC MD       -   1.00000487  x   1.00000328  =   1.00000815
 HV6828!SPC VA N     -   1.00000487  x   0.99996549  =   0.99997036
 HV6828!UTM  18      -   1.00000487  x   0.99987539  =   0.99988026
 HV6828
 HV6828:                Primary Azimuth Mark                     Grid Az
 HV6828:SPC MD       -  BANK                                     171 58 56.9
 HV6828:SPC VA N     -  BANK                                     171 02 50.3
 HV6828:UTM  18      -  BANK                                     173 13 26.6
 HV6828
 HV6828_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5046338422(NAD 83)
 HV6828
 HV6828|---------------------------------------------------------------------|
 HV6828| PID    Reference Object                     Distance      Geod. Az  |
 HV6828|                                                           dddmmss.s |
 HV6828| HV6814 BANK                                APPROX. 0.8 KM 1720952.8 |
 HV6828|---------------------------------------------------------------------|
 HV6828
 HV6828                          SUPERSEDED SURVEY CONTROL
 HV6828
 HV6828  NAD 83(1991)-  38 16 53.12886(N)    076 42 34.92506(W) AD(       ) 3
 HV6828  NAD 83(1986)-  38 16 53.12970(N)    076 42 34.93646(W) AD(       ) 3
 HV6828  NAD 27      -  38 16 52.69300(N)    076 42 36.02100(W) AD(       ) 3
 HV6828  USSD        -  38 16 53.28700(N)    076 42 35.98200(W) AD(       ) 3
 HV6828
 HV6828.Superseded values are not recommended for survey control.
 HV6828
 HV6828.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6828.See file dsdata.pdf to determine how the superseded data were derived.
 HV6828
 HV6828_MARKER: H = DRILL HOLE
 HV6828_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6828_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6828+STABILITY: SURFACE MOTION
 HV6828
 HV6828  HISTORY     - Date     Condition        Report By
 HV6828  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6828  HISTORY     - 1957     GOOD             CGS
 HV6828  HISTORY     - 1973     GOOD             MDDNR
 HV6828
 HV6828                          STATION DESCRIPTION
 HV6828
 HV6828'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6828'STATION IS ON THE EASTERN SHORE OF UPPER ST. CLEMENT BAY, ABOUT
 HV6828'1/2 MILES SE OF CEDAR POINT, AND 1 MILE N OF SHIPPING POINT, IN A
 HV6828'FIELD, ABOUT 12 FEET ABOVE HIGH WATER, 14 YARDS NE OF EXTREME
 HV6828'EDGE OF BANK, 14 YARDS E OF EDGE OF BANK, 21 YARDS SE OF EDGE OF
 HV6828'BANK, 25 YARDS N OF MARSHY GULLY, 130 YARDS WSW OF A FENCE
 HV6828'SURROUNDING A FARMHOUSE, AND 135 YARDS WSW OF A HOUSE.
 HV6828'
 HV6828'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6828'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6828'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6828'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6828'AND BEARINGS FROM STATION TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6828'FOLLOWS--NEAR CORNER OF NEAR CHIMNEY OF HOUSE, 3/4 MILE, S 41 DEG
 HV6828'36 MIN W.  NEAR CORNER OF CHIMNEY OUTSIDE OF HOUSE, 3/4 MILE, S 52
 HV6828'DEG 52 MIN W.  PEAK OF FRONT GABLE OF HOUSE, 1/2 MILE, N 58 DEG 10
 HV6828'MIN W.  NEAR PEAK OF ROOF ON COBRUMS WHARF, 7/8 MILE, N 45 DEG 5
 HV6828'MIN W.  LARGEST CHIMNEY OF HOUSE ON RIDGE, 2-3/4 MILES, N 32 DEG
 HV6828'42 MIN W.  NEAR CORNER OF CHIMNEY OF HOUSE ON RIDGE, 2-1/2 MILES,
 HV6828'N 11 DEG 28 MIN W.  PEAK OF FRONT GABLE OF HOUSE, 1-3/4 MILES, N
 HV6828'16 DEG 52 MIN E.  NEAR CORNER OF HOUSE, 136 YARDS, N 62 DEG 46
 HV6828'MIN E.  NAIL IN BLAZE IN 5-INCH CEDAR TREE, 15.07 METERS (49.4
 HV6828'FEET), S 42 DEG 56 MIN E.  NEAR PEAK OF ROOF OF LARGE BARN, 3/4
 HV6828'MILE, S 31 DEG 23 MIN E.  CHIMNEY OF HOUSE, 5/8 MILE, 352 DEG 19.
 HV6828
 HV6828                          STATION RECOVERY (1957)
 HV6828
 HV6828'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (WFD)
 HV6828'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL
 HV6828'DESCRIPTION IS ADEQUATE WITH THE FOLLOWING ADDITIONS--
 HV6828'
 HV6828'THE STATION IS 35.0 FEET SOUTHWEST OF SOUTHWEST CORNER OF CONCRETE
 HV6828'APRON AT WEST END OF LARGE BUILDING, 24.0 FEET NORTHEAST OF
 HV6828'WESTERNMOST CEDAR IN ROW OF SEVEN CEDARS AND 5.7 FEET NORTHEAST OF
 HV6828'WOODEN FLAGPOLE.  THE MONUMENT PROJECTS 4 INCHES ABOVE THE GROUND.
 HV6828
 HV6828                          STATION RECOVERY (1973)
 HV6828
 HV6828'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV6828'USCS-MSFC FAIR
 HV6828'
 HV6828'RECOVERED AS DESCRIBED.  ADD MONUMENT IS LEANING WITNESS POST AND
 HV6828'SIGN PLACED 1 FT E OF STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4121 ***********************************************************************
 JU4121  CBN         -  This is a Cooperative Base Network Control Station.
 JU4121  DESIGNATION -  CECILTON
 JU4121  PID         -  JU4121
 JU4121  STATE/COUNTY-  MD/CECIL
 JU4121  COUNTRY     -  US
 JU4121  USGS QUAD   -  CECILTON (2016)
 JU4121
 JU4121                         *CURRENT SURVEY CONTROL
 JU4121  ______________________________________________________________________
 JU4121* NAD 83(2011) POSITION- 39 24 05.07959(N) 075 52 15.37864(W)   ADJUSTED
 JU4121* NAD 83(2011) ELLIP HT-   -10.391 (meters)        (06/27/12)   ADJUSTED
 JU4121* NAD 83(2011) EPOCH   -  2010.00
 JU4121* NAVD 88 ORTHO HEIGHT -    23.081 (meters)       75.72  (feet) ADJUSTED
 JU4121  ______________________________________________________________________
 JU4121  GEOID HEIGHT    -        -33.487 (meters)                     GEOID18
 JU4121  NAD 83(2011) X  -  1,204,704.975 (meters)                     COMP
 JU4121  NAD 83(2011) Y  - -4,785,856.304 (meters)                     COMP
 JU4121  NAD 83(2011) Z  -  4,026,844.924 (meters)                     COMP
 JU4121  LAPLACE CORR    -         -1.30  (seconds)                    DEFLEC18
 JU4121  DYNAMIC HEIGHT  -         23.069 (meters)       75.69  (feet) COMP
 JU4121  MODELED GRAVITY -    980,109.4   (mgal)                       NAVD 88
 JU4121
 JU4121  VERT ORDER      -  SECOND    CLASS II
 JU4121
 JU4121  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4121  Standards:
 JU4121         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4121            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4121  -------------------------------------------------------------------
 JU4121  NETWORK    0.46   0.92           0.20   0.17   0.47     -0.00838373
 JU4121  -------------------------------------------------------------------
 JU4121  Click here for local accuracies and other accuracy information.
 JU4121
 JU4121.The horizontal coordinates were established by GPS observations
 JU4121.and adjusted by the National Geodetic Survey in June 2012.
 JU4121
 JU4121.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4121.been affixed to the stable North American tectonic plate. See 
 JU4121.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4121
 JU4121.The horizontal coordinates are valid at the epoch date displayed above
 JU4121.which is a decimal equivalence of Year/Month/Day.
 JU4121
 JU4121.The orthometric height was determined by differential leveling and
 JU4121.adjusted by the NATIONAL GEODETIC SURVEY
 JU4121.in April 1995.
 JU4121
 JU4121.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4121.GEOID18 height accuracy estimate available here.
 JU4121
 JU4121.Click photographs - Photos may exist for this station.
 JU4121
 JU4121.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4121
 JU4121.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4121
 JU4121.The ellipsoidal height was determined by GPS observations
 JU4121.and is referenced to NAD 83.
 JU4121
 JU4121.The dynamic height is computed by dividing the NAVD 88
 JU4121.geopotential number by the normal gravity value computed on the
 JU4121.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4121.degrees latitude (g = 980.6199 gals.).
 JU4121
 JU4121.The modeled gravity was interpolated from observed gravity values.
 JU4121
 JU4121. The following values were computed from the NAD 83(2011) position.
 JU4121
 JU4121;                    North         East     Units Scale Factor Converg.
 JU4121;SPC MD       -   193,170.546   497,248.224   MT  0.99999186   +0 42 31.1
 JU4121;SPC MD       -   633,760.37  1,631,388.55   sFT  0.99999186   +0 42 31.1
 JU4121;UTM  18      - 4,361,684.917   425,011.318   MT  0.99966923   -0 33 10.3
 JU4121
 JU4121!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4121!SPC MD       -   1.00000163  x   0.99999186  =   0.99999349
 JU4121!UTM  18      -   1.00000163  x   0.99966923  =   0.99967086
 JU4121
 JU4121_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2501161684(NAD 83)
 JU4121
 JU4121                          SUPERSEDED SURVEY CONTROL
 JU4121
 JU4121  NAD 83(2007)-  39 24 05.07977(N)    075 52 15.37942(W) AD(2002.00) 0
 JU4121  ELLIP H (02/10/07)  -10.359  (m)                       GP(2002.00)    
 JU4121  NAD 83(1991)-  39 24 05.08022(N)    075 52 15.37930(W) AD(       ) B
 JU4121  ELLIP H (02/12/02)  -10.364  (m)                       GP(       ) 4 1
 JU4121  ELLIP H (12/03/93)  -10.400  (m)                       GP(       ) 4 1
 JU4121  NAD 83(1991)-  39 24 05.08022(N)    075 52 15.37930(W) AD(       ) B
 JU4121  ELLIP H (10/23/91)  -10.401  (m)                       GP(       ) 4 1
 JU4121  NAVD 88              23.08   (m)           75.7    (f) LEVELING    3  
 JU4121  NGVD 29              23.32   (m)           76.5    (f) LEVELING    3  
 JU4121
 JU4121.Superseded values are not recommended for survey control.
 JU4121
 JU4121.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4121.See file dsdata.pdf to determine how the superseded data were derived.
 JU4121
 JU4121_MARKER: DH = HORIZONTAL CONTROL DISK
 JU4121_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4121_STAMPING: CECILTON 1990
 JU4121_MARK LOGO: NGS
 JU4121_PROJECTION: FLUSH
 JU4121_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU4121_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4121+STABILITY: SURFACE MOTION
 JU4121_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4121+SATELLITE: SATELLITE OBSERVATIONS - September 22, 2014
 JU4121
 JU4121  HISTORY     - Date     Condition        Report By
 JU4121  HISTORY     - 1990     MONUMENTED       NGS
 JU4121  HISTORY     - 19901019 GOOD             NGS
 JU4121  HISTORY     - 19910101 GOOD             NGS
 JU4121  HISTORY     - 19930511 GOOD             NOS
 JU4121  HISTORY     - 20000327 GOOD             MDSHA
 JU4121  HISTORY     - 20020627 GOOD             MDSHA
 JU4121  HISTORY     - 20030316 GOOD             USPSQD
 JU4121  HISTORY     - 20040831 GOOD             GEOMET
 JU4121  HISTORY     - 20090309 GOOD             GWS
 JU4121  HISTORY     - 20140922 GOOD             INDIV
 JU4121  HISTORY     - 20211201 MARK NOT FOUND   MDSHA
 JU4121
 JU4121                          STATION DESCRIPTION
 JU4121
 JU4121'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JU4121'THE STATION IS LOCATED IN THE TOWN OF CECILTON ON THE GROUNDS OF THE
 JU4121'OLD CECILTON ELEMENTARY SCHOOL. THE PROPERTY IS OWNED BY THE CECIL
 JU4121'COUNTY DEPARTMENT OF PUBLIC SCHOOLS.
 JU4121'TO REACH THE STATION FROM THE POST OFFICE IN CECILTON ON STATE HIGHWAY
 JU4121'282 ( EAST MAIN STREET ). GO EAST ON STATE HIGHWAY 282 FOR 0.05 MI
 JU4121'(0.08 KM) TO THE INTERSECTION OF STATE HIGHWAY 282 AND STATE HIGHWAY
 JU4121'213 ( SOUTH BOHEMIA STREET ). TURN RIGHT AND GO SOUTH ON STATE
 JU4121'HIGHWAY 213 FOR 0.3 MI (0.5 KM) TO THE ENTRANCE ON THE RIGHT TO THE
 JU4121'CECILTON ELEMENTARY SCHOOL ANNEX. TURN RIGHT INTO THE ENTRANCE AND
 JU4121'THE STATION IS SET IN THE GRASS FIELD BEHIND THE SCHOOL BUILDING.
 JU4121'THE STATION IS A STANDARD NGS DISK SET IN THE TOP OF A 0.3 M (1.0 FT)
 JU4121'ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.
 JU4121'IT IS 32.16 M (105.51 FT) SOUTHEAST OF A WITNESS POST, 46.63 M
 JU4121'(152.99 FT) NORTHEAST OF THE EDGE OF THE HIGH GRASS FIELD, 43.59 M
 JU4121'(143.01 FT) WEST OF THE NORTHWEST CORNER OF THE MACADAM PAD, AND
 JU4121'67.21 M (220.50 FT) WEST OF THE NORTHWEST CORNER OF THE ONE STORY
 JU4121'BRICK OLD CECILTON ELEMENTARY SCHOOL.
 JU4121
 JU4121                          STATION RECOVERY (1990)
 JU4121
 JU4121'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JU4121'0.4 KM (0.2 MI) SOUTHERLY ALONG STATE HIGHWAY 213 FROM THE JUNCTION OF
 JU4121'STATE HIGHWAY 282 IN CECILTON, 146.7 M (481.3 FT) NORTHWEST OF AND
 JU4121'LEVEL WITH THE HIGHWAY CENTERLINE, 67.2 M (220.5 FT) WEST OF THE WEST
 JU4121'CORNER OF THE CECILTON ELEMENTARY SCHOOL ANNEX, 46.6 M (152.9 FT)
 JU4121'NORTHEAST OF THE SOUTHWEST EDGE OF THE SCHOOL LAWN, 43.6 M (143.0 FT)
 JU4121'WEST OF THE WEST CORNER OF AN ASPHALT PLAY AREA, 32.2 M (105.6 FT)
 JU4121'SOUTHEAST OF A WITNESS POST, AND THE MONUMENT IS FLUSH WITH THE GROUND
 JU4121'SURFACE.
 JU4121
 JU4121                          STATION RECOVERY (1991)
 JU4121
 JU4121'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JU4121'STATION IS LOCATED ABOUT 9 KM (5.6 MI) WEST OF THE MARYLAND-DELAWARE
 JU4121'STATE LINE, 4 KM (2.5 MI) NORTH OF THE CECIL-KENT COUNTY LINE, IN THE
 JU4121'THE SOUTH SECTION OF CECILTON, AND IN THE REAR PLAY AREA OF THE
 JU4121'CECILTON ELEMENTARY SCHOOL ANNEX.  OWNERSHIP--CECIL COUNTY DEPARTMENT
 JU4121'OF PUBLIC SCHOOLS.  CONTACT MRS. EILEEN ONEIL (AT THE MAIN SCHOOL
 JU4121'BUILDING), PHONE 301-275-1000.
 JU4121'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 213 AND 282 (MAIN STREET)
 JU4121'IN CECILTON, GO SOUTH ON HIGHWAY 213 FOR 0.45 KM (0.28 MI) TO THE
 JU4121'SCHOOL ANNEX ENTRANCE ON THE RIGHT.  TURN RIGHT, KEEPING LEFT ON
 JU4121'CIRCULAR DRIVE AND PASSING TO THE LEFT OF THE SCHOOL BUILDING, FOR
 JU4121'0.13 KM (0.08 MI) TO THE REAR OF THE BUILDING.  CONTINUE AHEAD,
 JU4121'NORTHWESTERLY, ACROSS GRASS FOR 67 M (219.8 FT) TO THE STATION.
 JU4121'STATION MARK IS SET IN THE TOP OF A 25-CM ROUND CONCRETE POST 2 CM
 JU4121'BELOW GROUND.  IT IS 32.0 M (105.0 FT) SOUTH-SOUTHEAST OF A
 JU4121'FIBERGLASS WITNESS POST AT MOW LINE AT REAR OF PLAYGROUND, 48.5 M
 JU4121'(159.1 FT) NORTHEAST OF THE MOW LINE AT SIDE OF PLAYGROUND, 67.1 M
 JU4121'(220.1 FT) WEST-NORTHWEST OF THE WEST CORNER OF THE SCHOOL BUILDING,
 JU4121'63.9 M (209.6 FT) WEST OF THE NORTH CORNER OF THE MACADAM PLAY AREA,
 JU4121'AND 27.3 M (89.6 FT) SOUTHWEST OF THE EXTENDED SOUTHWEST SIDE OF THE
 JU4121'SCHOOL BUILDING.
 JU4121'DESCRIBED BY G.R.HEID.
 JU4121
 JU4121                          STATION RECOVERY (1993)
 JU4121
 JU4121'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1993
 JU4121'RECOVERED IN GOOD CONDITION.
 JU4121
 JU4121                          STATION RECOVERY (2000)
 JU4121
 JU4121'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JU4121'RECOVERED AS DESCRIBED.
 JU4121
 JU4121                          STATION RECOVERY (2002)
 JU4121
 JU4121'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 JU4121'RECOVERED AS DESCRIBED.
 JU4121
 JU4121                          STATION RECOVERY (2003)
 JU4121
 JU4121'RECOVERY NOTE BY US POWER SQUADRON 2003 (DET)
 JU4121'ADD TO THE VERY END OF THE DESCRIPTION - ON THE TOP OF THE WEST WALL.
 JU4121
 JU4121                          STATION RECOVERY (2004)
 JU4121
 JU4121'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2004 (BCL)
 JU4121'RECOVERED IN GOOD CONDITION.
 JU4121
 JU4121                          STATION RECOVERY (2009)
 JU4121
 JU4121'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (JMS)
 JU4121'RECOVERED AS DESCRIBED.
 JU4121
 JU4121                          STATION RECOVERY (2014)
 JU4121
 JU4121'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 JU4121'RECOVERED AS DESCRIBED
 JU4121'DESCRIPTION IS ADEQUATE
 JU4121
 JU4121                          STATION RECOVERY (2021)
 JU4121
 JU4121'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JU4121'STAKED FOR THE MARK USING NETWORK RTK.  THERE IS A NEW HOUSING
 JU4121'DEVELOPMENT.  THE POINT FALLS WITHIN A HOUSE AT 701 LEVI COPPIN STREET
 JU4121'CECILTON, MD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6043 ***********************************************************************
 HV6043  DESIGNATION -  CEDAR
 HV6043  PID         -  HV6043
 HV6043  STATE/COUNTY-  MD/TALBOT
 HV6043  COUNTRY     -  US
 HV6043  USGS QUAD   -  OXFORD (2016)
 HV6043
 HV6043                         *CURRENT SURVEY CONTROL
 HV6043  ______________________________________________________________________
 HV6043* NAD 83(1991) POSITION- 38 44 22.45829(N) 076 13 46.72995(W)   ADJUSTED
 HV6043* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6043  ______________________________________________________________________
 HV6043  GEOID HEIGHT    -        -34.411 (meters)                     GEOID18
 HV6043  LAPLACE CORR    -         -4.84  (seconds)                    DEFLEC18
 HV6043  HORZ ORDER      -  THIRD
 HV6043
 HV6043.The horizontal coordinates were established by classical geodetic methods
 HV6043.and adjusted by the National Geodetic Survey in January 1992.
 HV6043
 HV6043.The orthometric height was scaled from a topographic map.
 HV6043
 HV6043.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6043.GEOID18 height accuracy estimate available here.
 HV6043
 HV6043.Click photographs - Photos may exist for this station.
 HV6043
 HV6043.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6043
 HV6043. The following values were computed from the NAD 83(1991) position.
 HV6043
 HV6043;                    North         East     Units Scale Factor Converg.
 HV6043;SPC MD       -   119,379.294   466,972.864   MT  0.99995266   +0 29 00.6
 HV6043;SPC MD       -   391,663.57  1,532,060.14   sFT  0.99995266   +0 29 00.6
 HV6043;UTM  18      - 4,288,594.916   393,131.673   MT  0.99974064   -0 46 10.4
 HV6043
 HV6043!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6043!SPC MD       -   1.00000528  x   0.99995266  =   0.99995794
 HV6043!UTM  18      -   1.00000528  x   0.99974064  =   0.99974592
 HV6043
 HV6043:                Primary Azimuth Mark                     Grid Az
 HV6043:SPC MD       -  ROSS                                     244 45 22.7
 HV6043:UTM  18      -  ROSS                                     246 00 33.7
 HV6043
 HV6043_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9313188594(NAD 83)
 HV6043
 HV6043|---------------------------------------------------------------------|
 HV6043| PID    Reference Object                     Distance      Geod. Az  |
 HV6043|                                                           dddmmss.s |
 HV6043| CX2187 CEDAR RM                             11.160 METERS 15205     |
 HV6043| HV6005 ROSS                                APPROX. 0.9 KM 2451423.3 |
 HV6043|---------------------------------------------------------------------|
 HV6043
 HV6043                          SUPERSEDED SURVEY CONTROL
 HV6043
 HV6043  NAD 83(1986)-  38 44 22.45463(N)    076 13 46.74485(W) AD(       ) 3
 HV6043  NAD 27      -  38 44 22.03400(N)    076 13 47.94400(W) AD(       ) 3
 HV6043  USSD        -  38 44 22.42200(N)    076 13 47.75500(W) AD(       ) 3
 HV6043
 HV6043.Superseded values are not recommended for survey control.
 HV6043
 HV6043.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6043.See file dsdata.pdf to determine how the superseded data were derived.
 HV6043
 HV6043
 HV6043  HISTORY     - Date     Condition        Report By
 HV6043  HISTORY     - 1900     MONUMENTED       MDSFC
 HV6043  HISTORY     - 1909     GOOD             CGS
 HV6043  HISTORY     - 1939     MARK NOT FOUND   CGS
 HV6043  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6043
 HV6043                          STATION DESCRIPTION
 HV6043
 HV6043'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (FFW)
 HV6043'ON THE SOUTHEASTERN SHORE OF BROAD CREEK, ON CEDAR POINT, ABOUT
 HV6043'5/8 MILE S OF S END OF HAMBLETON ISLAND, AND 1/2 MILE ENE OF DEEP
 HV6043'NECK POINT, ON A HARD OYSTER-SHELL BANK, ABOUT 3 FEET ABOVE HIGH
 HV6043'WATER, 3 YARDS S OF SHORE, IN FRONT OF A THICKET OF CEDAR AND OAK
 HV6043'TREES.  STATION MARK IS NAIL IN CENTER OF 2-INCH STUB PROJECTING 2
 HV6043'INCHES ABOVE SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A
 HV6043'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6043'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV6043'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6043'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 11.16 METERS
 HV6043'(36.6 FEET) FROM STATION S 27 DEG 56 MIN E.  OTHER DISTANCES AND
 HV6043'BEARINGS ARE AS FOLLOWS--NAIL IN BLAZE IN 12-INCH ELM TREE, 4.13
 HV6043'METERS (13.55 FEET), S 28 DEG 46 MIN W.  N CHIMNEY OF HOUSE, 1 3/8
 HV6043'MILES, S 86 DEG 35 MIN W.  E GABLE OF HOUSE, 1-1/2 MILES, N 79
 HV6043'DEG 41 MIN W.  E CHIMNEY OF HOUSE, 1-1/4 MILES, N 56 DEG 13 MIN
 HV6043'W.  E CHIMNEY OF HOUSE, 1-7/8 MILES, N 33 DEG 46 MIN W.  S
 HV6043'CHIMNEY OF HOUSE, 2 MILES, N 12 DEG 33 MIN W.  W CHIMNEY OF HOUSE,
 HV6043'1-1/8 MILES, N 22 DEG 5 MIN E.  CUPOLA ON HOUSE, 1 MILE, N 47 DEG
 HV6043'46 MIN E.  E CHIMNEY OF HOUSE, 1-1/4 MILES, N 49 DEG 39 MIN E.  N
 HV6043'CHIMNEY OF HOUSE, 1-1/2 MILES, N 75 DEG 5 MIN E.  NAIL IN BLAZE IN
 HV6043'12-INCH TWIN OAK TREE, 6.14 METERS (20.14 FEET) S 16 DEG 4 MIN E.
 HV6043
 HV6043                          STATION RECOVERY (1939)
 HV6043
 HV6043'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV6043'STATION SEARCHED FOR BUT NOT FOUND.  HAS PROBABLY WASHED OUT.
 HV6043
 HV6043                          STATION RECOVERY (1940)
 HV6043
 HV6043'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6043'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  MAY HAVE BEEN WASHED
 HV6043'OUT.  REFERENCE MONUMENT SEARCHED FOR BUT NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7078 ***********************************************************************
 HV7078  DESIGNATION -  CEDAR
 HV7078  PID         -  HV7078
 HV7078  STATE/COUNTY-  MD/CHARLES
 HV7078  COUNTRY     -  US
 HV7078  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7078
 HV7078                         *CURRENT SURVEY CONTROL
 HV7078  ______________________________________________________________________
 HV7078* NAD 83(1993) POSITION- 38 20 32.86190(N) 076 58 40.47204(W)   ADJUSTED
 HV7078* NAVD 88 ORTHO HEIGHT -    19.0   (meters)       62.    (feet) VERTCON3
 HV7078  ______________________________________________________________________
 HV7078  GEOID HEIGHT    -        -33.457 (meters)                     GEOID18
 HV7078  LAPLACE CORR    -         -3.86  (seconds)                    DEFLEC18
 HV7078  HORZ ORDER      -  SECOND
 HV7078
 HV7078.The horizontal coordinates were established by classical geodetic methods
 HV7078.and adjusted by the National Geodetic Survey in November 1994.
 HV7078
 HV7078.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7078.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7078
 HV7078.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7078.GEOID18 height accuracy estimate available here.
 HV7078
 HV7078.Click photographs - Photos may exist for this station.
 HV7078
 HV7078.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7078
 HV7078. The following values were computed from the NAD 83(1993) position.
 HV7078
 HV7078;                    North         East     Units Scale Factor Converg.
 HV7078;SPC MD       -    75,016.422   401,931.244   MT  0.99999288   +0 00 49.9
 HV7078;SPC MD       -   246,116.38  1,318,669.42   sFT  0.99999288   +0 00 49.9
 HV7078;SPC VA N     - 2,076,114.780 3,633,053.474   MT  0.99995984   +0 56 59.9
 HV7078;SPC VA N     - 6,811,386.57 11,919,442.94   sFT  0.99995984   +0 56 59.9
 HV7078;UTM  18      - 4,245,664.233   327,147.559   MT  0.99996797   -1 13 38.4
 HV7078
 HV7078!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7078!SPC MD       -   1.00000228  x   0.99999288  =   0.99999515
 HV7078!SPC VA N     -   1.00000228  x   0.99995984  =   0.99996211
 HV7078!UTM  18      -   1.00000228  x   0.99996797  =   0.99997024
 HV7078
 HV7078:                Primary Azimuth Mark                     Grid Az
 HV7078:SPC MD       -  POTOMAC RIVER BRIDGE RED LIGHT           333 17 07.1
 HV7078:SPC VA N     -  POTOMAC RIVER BRIDGE RED LIGHT           332 20 57.1
 HV7078:UTM  18      -  POTOMAC RIVER BRIDGE RED LIGHT           334 31 35.4
 HV7078
 HV7078_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2714745664(NAD 83)
 HV7078
 HV7078|---------------------------------------------------------------------|
 HV7078| PID    Reference Object                     Distance      Geod. Az  |
 HV7078|                                                           dddmmss.s |
 HV7078| CX2189 CEDAR RM 1                           23.352 METERS 04333     |
 HV7078| CX2190 CEDAR RM 2                           16.850 METERS 11737     |
 HV7078| HV7100 LOWER CEDAR POINT BCN               APPROX. 1.6 KM 1975511.2 |
 HV7078| HV7101 LOWER CEDAR POINT LIGHTHOUSE        APPROX. 1.4 KM 2590051.4 |
 HV7078| HV7092 POTOMAC RIVER BRIDGE RED LIGHT      APPROX. 2.5 KM 3331757.0 |
 HV7078|---------------------------------------------------------------------|
 HV7078
 HV7078                          SUPERSEDED SURVEY CONTROL
 HV7078
 HV7078  NAD 83(1991)-  38 20 32.86237(N)    076 58 40.47725(W) AD(       ) 2
 HV7078  NAD 83(1986)-  38 20 32.86214(N)    076 58 40.48708(W) AD(       ) 2
 HV7078  NAD 27      -  38 20 32.40400(N)    076 58 41.58200(W) AD(       ) 2
 HV7078  NGVD 29 (07/19/86)   19.2    (m)           63.     (f) VERT ANG       
 HV7078
 HV7078.Superseded values are not recommended for survey control.
 HV7078
 HV7078.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7078.See file dsdata.pdf to determine how the superseded data were derived.
 HV7078
 HV7078_MARKER: DS = TRIANGULATION STATION DISK
 HV7078_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7078_STAMPING: CEDAR 1962
 HV7078_MARK LOGO: CGS
 HV7078_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7078
 HV7078  HISTORY     - Date     Condition        Report By
 HV7078  HISTORY     - 1962     MONUMENTED       CGS
 HV7078
 HV7078                          STATION DESCRIPTION
 HV7078
 HV7078'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (DGR)
 HV7078'STATION IS LOCATED ON LOWER CEDAR POINT IN A PICNIC AREA.
 HV7078'
 HV7078'TO REACH STATION FROM THE MARYLAND SIDE OF THE POTOMAC RIVER
 HV7078'BRIDGE ON U.S. 301 PROCEED NORTHERLY ON 301 FOR 1.7 MILES TO
 HV7078'JUNCTION OF U.S. 301 AND STATE 257.  TURN RIGHT AND PROCEED
 HV7078'EASTERLY FOR 2.3 MILES TO INTERSECTION OF STATE 257 AND MORGANTOWN
 HV7078'ROAD.  TURN RIGHT AND PROCEED SOUTHERLY ON MORGANTOWN ROAD FOR
 HV7078'2.15 MILES TO FORK IN ROAD.  TAKE ROAD RIGHT AND PROCEED WESTERLY
 HV7078'FOR 0.4 MILES TO END OF ROAD AND GATE TO PICNIC AREA.
 HV7078'
 HV7078'STATION IS APPROXIMATELY 135 YARDS SW OF GATE, AND 19.5 FEET NE OF
 HV7078'TREE WITH TRIANGULAR BLAZE ON IT.  IT IS A STANDARD DISK SET IN
 HV7078'TILE FLUSH WITH THE GROUND, AND IS STAMPED CEDAR 1962.
 HV7078'
 HV7078'R.M.NO.1 IS A STANDARD DISK SET IN A TILE FLUSH WITH THE GROUND IN
 HV7078'THE PICNIC AREA.  IT IS 76.62 FEET NE OF STATION.
 HV7078'
 HV7078'R.M.NO.2 IS A STANDARD DISK SET IN A TILE FLUSH WITH THE GROUND IN
 HV7078'THE PICNIC AREA.  IT IS 55.29 FEET SE OF THE STATION.
 HV7078'
 HV7078'THIS IS A GROUND STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7164 ***********************************************************************
 HV7164  DESIGNATION -  CEDAR
 HV7164  PID         -  HV7164
 HV7164  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7164  COUNTRY     -  US
 HV7164  USGS QUAD   -  SOUTH RIVER (2016)
 HV7164
 HV7164                         *CURRENT SURVEY CONTROL
 HV7164  ______________________________________________________________________
 HV7164* NAD 83(1991) POSITION- 38 55 55.31566(N) 076 31 36.82696(W)   ADJUSTED
 HV7164* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7164  ______________________________________________________________________
 HV7164  GEOID HEIGHT    -        -33.340 (meters)                     GEOID18
 HV7164  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 HV7164  HORZ ORDER      -  THIRD
 HV7164
 HV7164.The horizontal coordinates were established by classical geodetic methods
 HV7164.and adjusted by the National Geodetic Survey in January 1992.
 HV7164
 HV7164.The orthometric height was scaled from a topographic map.
 HV7164
 HV7164.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7164.GEOID18 height accuracy estimate available here.
 HV7164
 HV7164.Click photographs - Photos may exist for this station.
 HV7164
 HV7164.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7164
 HV7164. The following values were computed from the NAD 83(1991) position.
 HV7164
 HV7164;                    North         East     Units Scale Factor Converg.
 HV7164;SPC MD       -   140,567.429   441,020.225   MT  0.99995033   +0 17 49.0
 HV7164;SPC MD       -   461,178.31  1,446,913.85   sFT  0.99995033   +0 17 49.0
 HV7164;UTM  18      - 4,310,342.469   367,653.634   MT  0.99981568   -0 57 34.7
 HV7164
 HV7164!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7164!SPC MD       -   1.00000527  x   0.99995033  =   0.99995560
 HV7164!UTM  18      -   1.00000527  x   0.99981568  =   0.99982095
 HV7164
 HV7164:                Primary Azimuth Mark                     Grid Az
 HV7164:SPC MD       -  ALMSHOUSE RESET                          316 35 38.1
 HV7164:UTM  18      -  ALMSHOUSE RESET                          317 51 01.8
 HV7164
 HV7164_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6765310342(NAD 83)
 HV7164
 HV7164|---------------------------------------------------------------------|
 HV7164| PID    Reference Object                     Distance      Geod. Az  |
 HV7164|                                                           dddmmss.s |
 HV7164| CX2191 CEDAR RM                              5.610 METERS 21211     |
 HV7164| HV7113 ALMSHOUSE RESET                     APPROX. 1.4 KM 3165327.1 |
 HV7164|---------------------------------------------------------------------|
 HV7164
 HV7164                          SUPERSEDED SURVEY CONTROL
 HV7164
 HV7164  NAD 83(1986)-  38 55 55.31222(N)    076 31 36.83824(W) AD(       ) 3
 HV7164  NAD 27      -  38 55 54.89300(N)    076 31 37.96300(W) AD(       ) 3
 HV7164  USSD        -  38 55 55.27200(N)    076 31 37.78900(W) AD(       ) 3
 HV7164
 HV7164.Superseded values are not recommended for survey control.
 HV7164
 HV7164.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7164.See file dsdata.pdf to determine how the superseded data were derived.
 HV7164
 HV7164_MARKER: N = NAIL
 HV7164_SETTING: 0 = UNSPECIFIED SETTING
 HV7164
 HV7164  HISTORY     - Date     Condition        Report By
 HV7164  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7164  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7164
 HV7164                          STATION DESCRIPTION
 HV7164
 HV7164'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7164'ON THE SW SHORE OF SOUTH RIVER, ON POINT BETWEEN GLEBE AND
 HV7164'LONEHOUSE CREEKS ON LOW SAND POINT ABOUT 1 FOOT ABOVE AND 6 FEET
 HV7164'BACK FROM HIGH-WATER MARK.  A NUMBER OF SMALL CEDAR TREES STAND
 HV7164'SW OF THE STATION.
 HV7164'
 HV7164'STATION MARK IS NAIL IN STUB FLUSH WITH THE GROUND.
 HV7164'
 HV7164'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7164'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7164'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7164'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7164'IS 5.61 METERS (18.41 FEET) FROM STATION IN BEARING S 32 DEG 11
 HV7164'MIN W.  DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV7164'REFERENCE ARE AS FOLLOWS--NAIL IN TWIN 9-INCH CEDAR TREE, 5.69
 HV7164'METERS (18.67 FEET), S 43 DEG 21 MIN W.  NAIL IN BLAZED IN 4-INCH
 HV7164'LOCUST TREE, 5.11 METERS (16.77 FEET), N 56 DEG 34 MIN W.  S
 HV7164'CHIMNEY OF ALMSHOUSE, 1 MILE, N 46 DEG 57 MIN W. FLAGSTAFF ON
 HV7164'WAGGAMANS CLUBHOUSE, 1 MILE, N 16 DEG 9 MIN W. WAGGAMANS WINDMILL,
 HV7164'1 MILE, N 13 DEG 20 MIN W.  N CHIMNEY OF BROWN HOUSE ON OPPOSITE
 HV7164'SHORE, 3/4 MILE, N 44 DEG 30 MIN E.
 HV7164
 HV7164                          STATION RECOVERY (1960)
 HV7164
 HV7164'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7164'STATION AND RM WERE SEARCHED FOR BUT COULD NOT BE FOUND.  THE
 HV7164'ENTIRE POINT OF LAND HAS CHANGED WHERE THE STATION WAS LOCATED.
 HV7164'EXTENSIVE EROSION HAS LEFT ONLY 3 TREES ON THE POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7165 ***********************************************************************
 HV7165  DESIGNATION -  CEDAR
 HV7165  PID         -  HV7165
 HV7165  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7165  COUNTRY     -  US
 HV7165  USGS QUAD   -  SOUTH RIVER (2016)
 HV7165
 HV7165                         *CURRENT SURVEY CONTROL
 HV7165  ______________________________________________________________________
 HV7165* NAD 83(1991) POSITION- 38 55 55.57867(N) 076 31 36.96719(W)   ADJUSTED
 HV7165* NAVD 88 ORTHO HEIGHT -    -0.25  (+/-2cm)       -0.8   (feet) VERTCON3
 HV7165  ______________________________________________________________________
 HV7165  GEOID HEIGHT    -        -33.340 (meters)                     GEOID18
 HV7165  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 HV7165  HORZ ORDER      -  THIRD
 HV7165  VERT ORDER      -  THIRD ? (See Below)
 HV7165
 HV7165.The horizontal coordinates were established by classical geodetic methods
 HV7165.and adjusted by the National Geodetic Survey in January 1992.
 HV7165
 HV7165.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7165.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7165
 HV7165.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7165.GEOID18 height accuracy estimate available here.
 HV7165
 HV7165.The vertical order pertains to the NGVD 29 superseded value.
 HV7165
 HV7165.Click photographs - Photos may exist for this station.
 HV7165
 HV7165.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7165
 HV7165. The following values were computed from the NAD 83(1991) position.
 HV7165
 HV7165;                    North         East     Units Scale Factor Converg.
 HV7165;SPC MD       -   140,575.521   441,016.805   MT  0.99995033   +0 17 48.9
 HV7165;SPC MD       -   461,204.86  1,446,902.63   sFT  0.99995033   +0 17 48.9
 HV7165;UTM  18      - 4,310,350.633   367,650.393   MT  0.99981569   -0 57 34.8
 HV7165
 HV7165!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7165!SPC MD       -   1.00000527  x   0.99995033  =   0.99995560
 HV7165!UTM  18      -   1.00000527  x   0.99981569  =   0.99982096
 HV7165
 HV7165:                Primary Azimuth Mark                     Grid Az
 HV7165:SPC MD       -  SWITCH                                   090 07 14.9
 HV7165:UTM  18      -  SWITCH                                   091 22 38.6
 HV7165
 HV7165_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6765010350(NAD 83)
 HV7165
 HV7165|---------------------------------------------------------------------|
 HV7165| PID    Reference Object                     Distance      Geod. Az  |
 HV7165|                                                           dddmmss.s |
 HV7165| HV7132 SWITCH                              APPROX. 1.0 KM 0902503.8 |
 HV7165|---------------------------------------------------------------------|
 HV7165
 HV7165                          SUPERSEDED SURVEY CONTROL
 HV7165
 HV7165  NAD 83(1986)-  38 55 55.57522(N)    076 31 36.97846(W) AD(       ) 3
 HV7165  NAD 27      -  38 55 55.15600(N)    076 31 38.10300(W) AD(       ) 3
 HV7165  USSD        -  38 55 55.53400(N)    076 31 37.92900(W) AD(       ) 3
 HV7165  NGVD 29               0.00   (m)            0.0    (f) LEVELING    3  
 HV7165
 HV7165.Superseded values are not recommended for survey control.
 HV7165
 HV7165.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7165.See file dsdata.pdf to determine how the superseded data were derived.
 HV7165
 HV7165
 HV7165  HISTORY     - Date     Condition        Report By
 HV7165  HISTORY     - 1899     MONUMENTED       CGS
 HV7165  HISTORY     - 1903     MARK NOT FOUND   CGS
 HV7165
 HV7165                          STATION DESCRIPTION
 HV7165
 HV7165'DESCRIBED BY COAST AND GEODETIC SURVEY 1903
 HV7165'ON THE SW SIDE OF SOUTH RIVER, ON CEDAR POINT, BETWEEN GLEBE AND
 HV7165'BREWER CREEKS.  IN 1906 REPORTED AS LOST, AND CEDAR (1906)
 HV7165'ESTABLISHED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7183 ***********************************************************************
 HV7183  DESIGNATION -  CEDAR
 HV7183  PID         -  HV7183
 HV7183  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7183  COUNTRY     -  US
 HV7183  USGS QUAD   -  DEALE (2016)
 HV7183
 HV7183                         *CURRENT SURVEY CONTROL
 HV7183  ______________________________________________________________________
 HV7183* NAD 83(1991) POSITION- 38 51 02.61788(N) 076 31 40.86601(W)   ADJUSTED
 HV7183* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7183  ______________________________________________________________________
 HV7183  GEOID HEIGHT    -        -33.469 (meters)                     GEOID18
 HV7183  LAPLACE CORR    -         -3.61  (seconds)                    DEFLEC18
 HV7183  HORZ ORDER      -  THIRD
 HV7183
 HV7183.The horizontal coordinates were established by classical geodetic methods
 HV7183.and adjusted by the National Geodetic Survey in January 1992.
 HV7183
 HV7183.The orthometric height was scaled from a topographic map.
 HV7183
 HV7183.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7183.GEOID18 height accuracy estimate available here.
 HV7183
 HV7183.Click photographs - Photos may exist for this station.
 HV7183
 HV7183.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7183
 HV7183. The following values were computed from the NAD 83(1991) position.
 HV7183
 HV7183;                    North         East     Units Scale Factor Converg.
 HV7183;SPC MD       -   131,541.559   440,969.610   MT  0.99994994   +0 17 46.4
 HV7183;SPC MD       -   431,565.93  1,446,747.80   sFT  0.99994994   +0 17 46.4
 HV7183;UTM  18      - 4,301,321.084   367,405.264   MT  0.99981650   -0 57 31.2
 HV7183
 HV7183!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7183!SPC MD       -   1.00000514  x   0.99994994  =   0.99995508
 HV7183!UTM  18      -   1.00000514  x   0.99981650  =   0.99982163
 HV7183
 HV7183:                Primary Azimuth Mark                     Grid Az
 HV7183:SPC MD       -  DAR                                      199 03 49.4
 HV7183:UTM  18      -  DAR                                      200 19 07.0
 HV7183
 HV7183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6740501321(NAD 83)
 HV7183
 HV7183|---------------------------------------------------------------------|
 HV7183| PID    Reference Object                     Distance      Geod. Az  |
 HV7183|                                                           dddmmss.s |
 HV7183| HV7214 CEDAR POINT HOUSE WEST CHIMNEY       39.090 METERS 07259     |
 HV7183| CX2188 CEDAR RM                             10.330 METERS 09655     |
 HV7183| HV7182 DAR                                 APPROX. 1.2 KM 1992135.8 |
 HV7183| HV7189 GALESVILLE TANK                     APPROX. 1.4 KM 2364747.4 |
 HV7183|---------------------------------------------------------------------|
 HV7183
 HV7183                          SUPERSEDED SURVEY CONTROL
 HV7183
 HV7183  NAD 83(1986)-  38 51 02.61427(N)    076 31 40.87763(W) AD(       ) 3
 HV7183  NAD 27      -  38 51 02.20500(N)    076 31 42.02400(W) AD(       ) 3
 HV7183
 HV7183.Superseded values are not recommended for survey control.
 HV7183
 HV7183.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7183.See file dsdata.pdf to determine how the superseded data were derived.
 HV7183
 HV7183_MARKER: DS = TRIANGULATION STATION DISK
 HV7183_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7183
 HV7183  HISTORY     - Date     Condition        Report By
 HV7183  HISTORY     - 1933     MONUMENTED       CGS
 HV7183  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7183  HISTORY     - 20031002 MARK NOT FOUND   USPSQD
 HV7183
 HV7183                          STATION DESCRIPTION
 HV7183
 HV7183'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7183'ON THE S SHORE OF WEST RIVER ABOUT 1-1/2 MILES FROM THE MOUTH, ON
 HV7183'CEDAR POINT.  THE STATION IS ABOUT 100 YARDS E OF THE EXTREME END
 HV7183'OF THE POINT, AND IN THE MARSH AT THE EDGE OF THE FAST LAND.  IT
 HV7183'IS 30 FEET W OF HIGH-WATER LINE AND 100 FEET E OF HIGH-WATER
 HV7183'LINE. IT IS 33 FEET NW OF THE NW CORNER OF SMALL OUTBUILDING.
 HV7183'
 HV7183'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7183'CONCRETE AS DESCRIBED.
 HV7183
 HV7183                          STATION RECOVERY (1960)
 HV7183
 HV7183'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7183'STATION AND REFERENCE MARK SEARCHED FOR BY TWO MEN FOR MORE THAN
 HV7183'AN HOUR, BUT COULD NOT BE FOUND.  THE AREA OF THE STATION AND
 HV7183'REFERENCE MARK HAS BEEN FILLED TO GAIN MORE PROPERTY, SO THESE
 HV7183'STATIONS COULD POSSIBLY BE FOUND BY A TRAVERSE.
 HV7183
 HV7183                          STATION RECOVERY (2003)
 HV7183
 HV7183'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7183'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4309 ***********************************************************************
 JV4309  DESIGNATION -  CEDAR
 JV4309  PID         -  JV4309
 JV4309  STATE/COUNTY-  MD/MONTGOMERY
 JV4309  COUNTRY     -  US
 JV4309  USGS QUAD   -  KENSINGTON (2016)
 JV4309
 JV4309                         *CURRENT SURVEY CONTROL
 JV4309  ______________________________________________________________________
 JV4309* NAD 83(1993) POSITION- 39 00 22.41846(N) 077 05 53.40044(W)   ADJUSTED
 JV4309* NAVD 88 ORTHO HEIGHT -    73.    (meters)      240.    (feet) SCALED
 JV4309  ______________________________________________________________________
 JV4309  GEOID HEIGHT    -        -31.855 (meters)                     GEOID18
 JV4309  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 JV4309  HORZ ORDER      -  FIRST
 JV4309
 JV4309.The horizontal coordinates were established by classical geodetic methods
 JV4309.and adjusted by the National Geodetic Survey in November 1994.
 JV4309
 JV4309.The orthometric height was scaled from a topographic map.
 JV4309
 JV4309.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4309.GEOID18 height accuracy estimate available here.
 JV4309
 JV4309.Click photographs - Photos may exist for this station.
 JV4309
 JV4309.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4309
 JV4309. The following values were computed from the NAD 83(1993) position.
 JV4309
 JV4309;                    North         East     Units Scale Factor Converg.
 JV4309;SPC MD       -   148,702.079   391,497.316   MT  0.99995243   -0 03 41.8
 JV4309;SPC MD       -   487,866.74  1,284,437.44   sFT  0.99995243   -0 03 41.8
 JV4309;UTM  18      - 4,319,561.869   318,323.459   MT  1.00000644   -1 19 15.4
 JV4309
 JV4309!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4309!SPC MD       -   0.99999358  x   0.99995243  =   0.99994601
 JV4309!UTM  18      -   0.99999358  x   1.00000644  =   1.00000002
 JV4309
 JV4309:                Primary Azimuth Mark                     Grid Az
 JV4309:SPC MD       -  BETHESDA NAVAL MED CTR BCN               145 36 41.8
 JV4309:UTM  18      -  BETHESDA NAVAL MED CTR BCN               146 52 15.4
 JV4309
 JV4309_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1832319561(NAD 83)
 JV4309
 JV4309|---------------------------------------------------------------------|
 JV4309| PID    Reference Object                     Distance      Geod. Az  |
 JV4309|                                                           dddmmss.s |
 JV4309| CK6784 CEDAR RM 1                           47.812 METERS 06229     |
 JV4309| JV4271 N 1952                               55.835 METERS 09552     |
 JV4309| CK6785 CEDAR RM 2                           51.015 METERS 12309     |
 JV4309| JV4269 BETHESDA NAVAL MED CTR BCN          APPROX. 0.6 KM 1453300.0 |
 JV4309| JV4270 SHUNT 1952                          169.372 METERS 15620     |
 JV4309| JV4275 CEDAR 2                              68.345 METERS 19707     |
 JV4309|---------------------------------------------------------------------|
 JV4309
 JV4309                          SUPERSEDED SURVEY CONTROL
 JV4309
 JV4309  NAD 83(1991)-  39 00 22.41795(N)    077 05 53.40130(W) AD(       ) 1
 JV4309  NAD 83(1986)-  39 00 22.41756(N)    077 05 53.41111(W) AD(       ) 1
 JV4309  NAD 27      -  39 00 22.02376(N)    077 05 54.48428(W) AD(       ) 1
 JV4309
 JV4309.Superseded values are not recommended for survey control.
 JV4309
 JV4309.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4309.See file dsdata.pdf to determine how the superseded data were derived.
 JV4309
 JV4309_MARKER: DS = TRIANGULATION STATION DISK
 JV4309_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV4309_STAMPING: CEDAR 1952
 JV4309_MARK LOGO: CGS
 JV4309_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4309
 JV4309  HISTORY     - Date     Condition        Report By
 JV4309  HISTORY     - 1952     MONUMENTED       CGS
 JV4309  HISTORY     - 1955     SEE DESCRIPTION  CGS
 JV4309  HISTORY     - 19950428 MARK NOT FOUND   USPSQD
 JV4309
 JV4309                          STATION DESCRIPTION
 JV4309
 JV4309'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (IWS)
 JV4309'THE STATION IS LOCATED NEAR THE INTERSECTION OF WISCONSIN AVENUE
 JV4309'AND CEDAR LANE WHICH IS JUST N OF THE NAVAL MEDICAL CENTER.  THE
 JV4309'STATION IS 150 FEET W OF THE E EDGE OF THE CONCRETE PAVEMENT OF
 JV4309'WISCONSIN AVENUE, 44 FEET E OF C AND P POLE BC 2, 40 FEET SE OF
 JV4309'POLE PEP 64060, 37 FEET W OF THE STOP LIGHT TRIGGER ON CEDAR LANE,
 JV4309'AND 16 FEET S OF THE CENTER OF CEDAR LANE.  THE MARK IS BRAZED
 JV4309'TO THE TOP OF A 2-FOOT IRON PIPE, IS SET 1 INCH BELOW THE
 JV4309'SURFACE OF THE GROUND, AND IS STAMPED CEDAR 1952.
 JV4309'UNDERGROUND MARK IS A STANDARD DISK SET IN CONCRETE.
 JV4309'
 JV4309'R.M. 1 IS A STANDARD DISK SET FLUSH IN THE TOP OF A CONCRETE CULVERT
 JV4309'AT THE NW CORNER OF CEDAR LAND AND WISCONSIN AVENUE.  IT IS
 JV4309'STAMPED CEDAR NO 1 1952.
 JV4309'
 JV4309'R.M. 2 IS A STANDARD DISK SET FLUSH IN THE TOP OF A STREAM CULVERT
 JV4309'WHICH IS ABOUT 40 YARDS S OF CEDAR LANE.  THE MARK IS SET IN THE
 JV4309'WING WALL NEAR THE POINT WHERE IT JOINS THE TOP OF THE CULVERT.  IT
 JV4309'IS STAMPED CEDAR NO 2 1952.
 JV4309'
 JV4309'NOTE--THIS STATION IS A BASE STATION ON THE MEDICAL BASE LINE.
 JV4309
 JV4309                          STATION RECOVERY (1955)
 JV4309
 JV4309'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (CAS)
 JV4309'STATION WAS RECOVERED AS DESCRIBED.  THE STATION MARK AND REFERENCE
 JV4309'MARK HAVE BEEN DESTROYED DUE TO CONSTRUCTION OF ROAD.  STATION CEDAR
 JV4309'2 WAS ESTABLISHED AT THIS TIME.
 JV4309
 JV4309                          STATION RECOVERY (1995)
 JV4309
 JV4309'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4309'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5750 ***********************************************************************
 JV5750  DESIGNATION -  CEDAR
 JV5750  PID         -  JV5750
 JV5750  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5750  COUNTRY     -  US
 JV5750  USGS QUAD   -  ROUND BAY (2016)
 JV5750
 JV5750                         *CURRENT SURVEY CONTROL
 JV5750  ______________________________________________________________________
 JV5750* NAD 83(1991) POSITION- 39 03 46.91601(N) 076 33 55.55858(W)   ADJUSTED
 JV5750* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5750  ______________________________________________________________________
 JV5750  GEOID HEIGHT    -        -33.060 (meters)                     GEOID18
 JV5750  LAPLACE CORR    -         -4.88  (seconds)                    DEFLEC18
 JV5750  HORZ ORDER      -  THIRD
 JV5750
 JV5750.The horizontal coordinates were established by classical geodetic methods
 JV5750.and adjusted by the National Geodetic Survey in January 1992.
 JV5750
 JV5750.The orthometric height was scaled from a topographic map.
 JV5750
 JV5750.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5750.GEOID18 height accuracy estimate available here.
 JV5750
 JV5750.Click photographs - Photos may exist for this station.
 JV5750
 JV5750.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5750
 JV5750. The following values were computed from the NAD 83(1991) position.
 JV5750
 JV5750;                    North         East     Units Scale Factor Converg.
 JV5750;SPC MD       -   155,092.992   437,609.730   MT  0.99995517   +0 16 21.9
 JV5750;SPC MD       -   508,834.26  1,435,724.59   sFT  0.99995517   +0 16 21.9
 JV5750;UTM  18      - 4,324,937.485   364,563.262   MT  0.99982587   -0 59 11.9
 JV5750
 JV5750!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5750!SPC MD       -   1.00000507  x   0.99995517  =   0.99996024
 JV5750!UTM  18      -   1.00000507  x   0.99982587  =   0.99983094
 JV5750
 JV5750_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6456324937(NAD 83)
 JV5750
 JV5750                          SUPERSEDED SURVEY CONTROL
 JV5750
 JV5750  NAD 83(1986)-  39 03 46.91311(N)    076 33 55.56892(W) AD(       ) 3
 JV5750  NAD 27      -  39 03 46.52000(N)    076 33 56.69500(W) AD(       ) 3
 JV5750  USSD        -  39 03 46.84500(N)    076 33 56.56600(W) AD(       ) 3
 JV5750
 JV5750.Superseded values are not recommended for survey control.
 JV5750
 JV5750.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5750.See file dsdata.pdf to determine how the superseded data were derived.
 JV5750
 JV5750_MARKER: N = NAIL
 JV5750_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV5750_SP_SET: WOOD STUB
 JV5750_MARK LOGO: MDSFC
 JV5750_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5750
 JV5750  HISTORY     - Date     Condition        Report By
 JV5750  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5750  HISTORY     - 1906     GOOD             CGS
 JV5750
 JV5750                          STATION DESCRIPTION
 JV5750
 JV5750'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5750'AT THE UPPER END OF ROUND BAY IN THE SEVERN RIVER, ON CEDAR
 JV5750'POINT, AT THE SE SIDE OF ENTRANCE TO YANTZ CREEK.  IT IS 2
 JV5750'FEET ABOVE AND 50 FEET BACK FROM HIGH-WATER MARK AT EXTREME W
 JV5750'END OF POINT.  SEVERAL CEDAR TREES STAND JUST E OF THE
 JV5750'STATION.  STATION MARKED BY NAIL IN PINE STUB WITH TOP EVEN WITH
 JV5750'THE SURFACE OF GROUND.  THE STUB IS INSIDE A 4-INCH TILE PIPE
 JV5750'WHOSE TOP IS 1 FOOT BELOW SURFACE.  REFERENCE MARK IS MARKED BY
 JV5750'A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 JV5750'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2
 JV5750'FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5750'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 JV5750'IS 7.92 METERS (25.98 FEET) FROM STATION N 45 DEG
 JV5750'41 MIN E.  DISTANCES AND BEARINGS FROM THE STATION TO OTHER
 JV5750'POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY ON OLD HOUSE, 1
 JV5750'MILE, N 45 DEG 42 MIN W.  CHIMNEY ON YELLOW HOUSE, 1/2 MILE, N 25 DEG
 JV5750'41 MIN W.  NAIL IN BLAZE IN 3-INCH LOCUST TREE, 10.56 METERS
 JV5750'(34.6 FEET), N 31 DEG 38 MIN E.  GREEN WATER TOWER, 1/2
 JV5750'MILE, N 82 DEG 54 MIN E.  CHIMNEY ON RED ROOF OF COTTAGE, 1-1/4
 JV5750'MILES, S 74 DEG 10 MIN E.  CHAPEL DOME, NAVAL ACADEMY, 7 MILES,
 JV5750'S 37 DEG 08 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5942 ***********************************************************************
 JV5942  DESIGNATION -  CEDAR
 JV5942  PID         -  JV5942
 JV5942  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5942  COUNTRY     -  US
 JV5942  USGS QUAD   -  BELTSVILLE (2016)
 JV5942
 JV5942                         *CURRENT SURVEY CONTROL
 JV5942  ______________________________________________________________________
 JV5942* NAD 83(1991) POSITION- 39 00 33.20702(N) 076 53 06.43604(W)   ADJUSTED
 JV5942* NAVD 88 ORTHO HEIGHT -    75.    (meters)      246.    (feet) SCALED
 JV5942  ______________________________________________________________________
 JV5942  GEOID HEIGHT    -        -32.236 (meters)                     GEOID18
 JV5942  LAPLACE CORR    -         -4.95  (seconds)                    DEFLEC18
 JV5942  HORZ ORDER      -  FIRST
 JV5942
 JV5942.The horizontal coordinates were established by classical geodetic methods
 JV5942.and adjusted by the National Geodetic Survey in January 1992.
 JV5942
 JV5942.The orthometric height was scaled from a topographic map.
 JV5942
 JV5942.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5942.GEOID18 height accuracy estimate available here.
 JV5942
 JV5942.Click photographs - Photos may exist for this station.
 JV5942
 JV5942.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5942
 JV5942. The following values were computed from the NAD 83(1991) position.
 JV5942
 JV5942;                    North         East     Units Scale Factor Converg.
 JV5942;SPC MD       -   149,036.446   409,949.777   MT  0.99995255   +0 04 19.6
 JV5942;SPC MD       -   488,963.74  1,344,976.89   sFT  0.99995255   +0 04 19.6
 JV5942;UTM  18      - 4,319,490.671   336,779.072   MT  0.99992805   -1 11 12.6
 JV5942
 JV5942!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5942!SPC MD       -   0.99999333  x   0.99995255  =   0.99994588
 JV5942!UTM  18      -   0.99999333  x   0.99992805  =   0.99992138
 JV5942
 JV5942:                Primary Azimuth Mark                     Grid Az
 JV5942:SPC MD       -  COLLEGE                                  242 08 40.6
 JV5942:UTM  18      -  COLLEGE                                  243 24 12.8
 JV5942
 JV5942_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3677919490(NAD 83)
 JV5942
 JV5942|---------------------------------------------------------------------|
 JV5942| PID    Reference Object                     Distance      Geod. Az  |
 JV5942|                                                           dddmmss.s |
 JV5942| CB1059 CEDAR RM 3 AZIMUTH                                 0064250.1 |
 JV5942| CB1057 CEDAR RM NE                          21.958 METERS 03122     |
 JV5942| JV5862 AIRWAY BCN 57 B                     APPROX. 6.1 KM 0715939.9 |
 JV5942| HV7469 GLENN DALE DC SANITORIUM TANK       APPROX. 7.9 KM 1294415.6 |
 JV5942| CB1058 CEDAR RM 2                           32.220 METERS 15233     |
 JV5942| HV7756 NEW YORK WASH AIRWAY BCN 57A        APPROX. 6.1 KM 1933358.6 |
 JV5942| HV7745 COLLEGE PARK UNIV OF MD CHAPEL      APPROX. 5.6 KM 2395604.8 |
 JV5942| HV1447 COLLEGE                             APPROX. 5.8 KM 2421300.2 |
 JV5942|---------------------------------------------------------------------|
 JV5942
 JV5942                          SUPERSEDED SURVEY CONTROL
 JV5942
 JV5942  NAD 83(1986)-  39 00 33.20548(N)    076 53 06.44676(W) AD(       ) 1
 JV5942  NAD 27      -  39 00 32.80869(N)    076 53 07.54305(W) AD(       ) 1
 JV5942  USSD        -  39 00 33.14700(N)    076 53 07.37900(W) AD(       ) 3
 JV5942
 JV5942.Superseded values are not recommended for survey control.
 JV5942
 JV5942.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5942.See file dsdata.pdf to determine how the superseded data were derived.
 JV5942
 JV5942_MARKER: DS = TRIANGULATION STATION DISK
 JV5942_SETTING: 0 = UNSPECIFIED SETTING
 JV5942_STAMPING: CEDAR 1917
 JV5942_MARK LOGO: CGS
 JV5942
 JV5942  HISTORY     - Date     Condition        Report By
 JV5942  HISTORY     - 1917     MONUMENTED       CGS
 JV5942  HISTORY     - 1933     GOOD             CGS
 JV5942  HISTORY     - 1958     GOOD             CGS
 JV5942  HISTORY     - 1959     GOOD             LOCSUR
 JV5942  HISTORY     - 1964     MARK NOT FOUND   MDDT
 JV5942
 JV5942                          STATION DESCRIPTION
 JV5942
 JV5942'DESCRIBED BY COAST AND GEODETIC SURVEY 1917 (CVH)
 JV5942'STATION IS ABOUT 2-1/2 MILES NE OF BERWYN, AND 1-1/2 MILES SE OF
 JV5942'SUNNYSIDE, NEAR HOUSE OCCUPIED BY CHARLES S. PETERS.  THE HOUSE IS
 JV5942'DISTINGUISHED FROM OTHERS NEARBY BY AVENUE OF CEDARS LEADING UP
 JV5942'TO IT.  STATION MARKED BY A STANDARD BRONZE TABLET STATION MARK
 JV5942'SET IN GRANITE POST.  THE REFERENCE MARK, A BRONZE TABLET SET IN A
 JV5942'GRANITE POST, IS 21.925 METERS (71.93 FEET) FROM STATION.
 JV5942'NW CORNER OF HOUSE IS 10.869 METERS
 JV5942'(35.66 FEET) FROM STATION S 85 DEG 14 MIN E AND THE
 JV5942'SW CORNER OF S PORCH (OUTSIDE CORNER OF POST) IS DISTANT
 JV5942'16.345 METERS (53.63 FEET) S 36 DEG 25 MIN E.
 JV5942
 JV5942                          STATION RECOVERY (1933)
 JV5942
 JV5942'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5942'ORIGINAL MARK IS A 6- BY 6-INCH GRANITE STONE WITH THE BRONZE DISK
 JV5942'SET IN THE STONE 6 INCHES BELOW THE SURFACE OF THE GROUND IN A
 JV5942'MANHOLE CYLINDER WITH A REMOVABLE COVER.
 JV5942'
 JV5942'REFERENCE MARK NO. 1 IS 71.85 FEET NW OF THE STATION AND IS A
 JV5942'STANDARD DISK SET IN A 6- BY 6-INCH GRANITE POST AND IS IN GOOD
 JV5942'CONDITION, STAMPED CEDAR 1917.
 JV5942'
 JV5942'REFERENCE MARK, NOT MARKED, IS 51.87 FEET W OF THE STATION AND IS
 JV5942'A BRASS SCREW SET IN CONRETE WITH A CROSS ON THE TOP OF THE
 JV5942'SCREW.  THIS MARK WAS SET BY THE MARYLAND SANITARY COMMISSION
 JV5942'ENGINEERS.
 JV5942'
 JV5942'REFERENCE MARK NO. 2, 1933, IS 105.60 FEET S OF THE STATION, 30
 JV5942'FEET S OF THE BACK OF THE HOUSE.
 JV5942'
 JV5942'REFERENCE MARK NO. 3, 1933, IS 0.25 MILE NNW OF THE STATION IN THE
 JV5942'NW CORNER OF AN ABANDONED FIELD, 70 FEET ENE OF THE NW CORNER OF THE
 JV5942'FIELD, 80 FEET E OF THE ROAD AND THE LANE LEADING TO THE HOUSE, 15
 JV5942'FEET N OF THE EDGE OF THE CUT ON THE N SIDE OF THE ROAD.  THE MARK
 JV5942'IS VISIBLE FROM THE GROUND BY CLEARING SMALL BRUSH.
 JV5942'
 JV5942'TO REACH THIS STATION, GO TO MARYLAND UNIVERSITY ATHLETIC STADIUM
 JV5942'ON THE BALTIMORE BOULEVARD HIGHWAY 1, CONTINUE ON HIGHWAY 1 FOR
 JV5942'1.3 MILES TO ROAD SIGN BERWYN.  TURN RIGHT, GO TO THE BERWYN
 JV5942'RAILROAD STATION, CROSS THE RAILROAD, GO 0.3 MILE, TURN LEFT, GO
 JV5942'0.7 MILE TO CONCRETE HIGHWAY AT SIGN BRANCHVILLE ROAD, GO NE 0.45
 JV5942'MILE TO THE END OF THE CONCRETE HIGHWAY.  CONTINUE IN THE SAME
 JV5942'DIRECTION ON THE DIRT ROAD 1.4 MILES TO 2 MAIL BOXES ON STEEP
 JV5942'SLOPE AND SHARP TURN UP HILL ON THE RIGHT.  TURN RIGHT HERE ON
 JV5942'NARROW STEEP CLAY ROAD, GO 0.1 MILE TO LANE WITH CEDAR TREES
 JV5942'ON EACH SIDE, TURN INTO THIS LANE AND GO 0.1 MILE TO HOME OF
 JV5942'MR. L.L.  HURLEY AND MR. ALFRED THOMPSON.
 JV5942'
 JV5942'THIS STATION COULD BE USED AS AN AZIMUTH STATION AS STATION HOME
 JV5942'CAN BE SEEN FROM THE GROUND WITH LIGHT CLEARING CLOSE TO THE
 JV5942'STATION.
 JV5942'
 JV5942'STATION MARK IS STAMPED CEDAR 1917 AND WAS REFERENCE MARK NO. 1 AND
 JV5942'THESE MARKS ARE IN EXCELLENT CONDITION.
 JV5942
 JV5942                          STATION RECOVERY (1958)
 JV5942
 JV5942'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5942'STATION AND REFERENCE MARKS 1, 2 AND 3 (AZIMUTH MARK) WERE RECOVERED
 JV5942'AS DESCRIBED AND FOUND IN GOOD CONDITION.  THE REFERENCE MARK (NOT
 JV5942'STAMPED) THAT WAS SET BY MARYLAND SANITATION COMMISSION WAS NOT
 JV5942'RECOVERED.  A CHECK WAS MADE OF THE DISTANCE AND DIRECTION TO THE
 JV5942'MARKS AND A SLIGHT DIFFERENCE WAS FOUND IN THE DISTANCE AND
 JV5942'DIRECTION TO REFERENCE MARKS 1 AND 2.
 JV5942'
 JV5942'THE HOUSE MENTIONED IN PREVIOUS DESCRIPTIONS IS NO LONGER
 JV5942'PRESENT AND THE FIELD IS NOW COVERED WITH TIMBER WITH THE EXCEPTION
 JV5942'OF A SMALL CLEARING AT THE STATION SITE.
 JV5942'
 JV5942'DUE TO CHANGES IN LANDMARKS, A NEW DESCRIPTION FOLLOWS--
 JV5942'
 JV5942'STATION IS LOCATED IN THE VICINITY OF THE GREENBELT WATER TANK
 JV5942'AND ON PROPERTY OF THE CITY OF GREENBELT.  STATION IS A STANDARD
 JV5942'DISK SET IN A 6- BY 6-IN. GRANITE MONUMENT IN A MANHOLE CLYINDER
 JV5942'WHICH HAS A REMOVABLE COVER.  THE MARK IS ABOUT 6 IN. BELOW THE
 JV5942'SURFACE OF THE GROUND AND THE DISK IS STAMPED CEDAR 1917.
 JV5942'
 JV5942'REFERENCE MARK 1 IS 7-1/2 FT. E-NE OF AN 18-IN. CEDAR TREE.  THE
 JV5942'MARK IS A STANDARD DISK SET IN A 6- BY 6-IN. GRANITE MONUMENT,
 JV5942'FLUSH WITH THE SURFACE OF THE GROUND AND THE DISK IS STAMPED
 JV5942'CEDAR 1917.
 JV5942'
 JV5942'REFERENCE MARK 2 IS 46 FT. S OF TWO IDENTICAL TREES.  THE MARK
 JV5942'PROJECTS 6 IN. AND THE DISK IS STAMPED CEDAR NO 2 1933.
 JV5942'
 JV5942'MARYLAND ENGINEER MARK (REFERENCE MARK) IS 36 FT. SW OF A TRACK
 JV5942'ROAD.  THE MARK IS A 6- BY 6-IN. CONCRETE POST WITH A BOLT
 JV5942'CEMENTED IN TOP OF THE POST.  THE MARK PROJECTS 8 IN. AND THERE
 JV5942'IS NO STAMPING ON THE MARK.
 JV5942'
 JV5942'REFERENCE MARK 3 IS 32 FT. N-NW OF A NW FENCE CORNER, 28 FT. W-SW
 JV5942'OF A 36-IN. TREE AND 33 FT. S OF THE APPROXIMATE CENTERLINE OF THE
 JV5942'ROAD.  THE MARK PROJECTS 10 IN. AND THE DISK IS STAMPED CEDAR NO
 JV5942'3 1933.
 JV5942'
 JV5942'TO REACH THE STATION FROM THE RAILROAD DEPOT IN BELTSVILLE, GO
 JV5942'S ON U.S. HIGHWAY 1 FOR 1.0 MI. TO A SIGNAL LIGHT AT A SIDE ROAD
 JV5942'LEFT.  TURN LEFT, CROSS AN OVERPASS AND GO E ON A SURFACED ROAD
 JV5942'FOR 0.5 MI. TO CROSSROADS.  TURN RIGHT AND GO S ON A SURFACED ROAD
 JV5942'FOR 1.75 MI. TO CLAY AND GRAVEL ROAD LEFT.  TURN LEFT AND GO E
 JV5942'ON THE CLAY AND GRAVEL ROAD FOR 0.3 MI. TO A DRIVEWAY ON THE
 JV5942'LEFT.  CONTINUE E UPHILL FOR 0.15 MI. TO WOODS ROAD ON THE
 JV5942'RIGHT.  (AZIMUTH MARK IS ABOUT 25 YD. E OF THIS POINT.) TURN
 JV5942'RIGHT AND GO S ON WOODS ROAD FOR 0.2 MI. TO A SMALL CLEARING AND
 JV5942'THE STATION AS DESCRIBED.
 JV5942
 JV5942                          STATION RECOVERY (1959)
 JV5942
 JV5942'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1959 (RLW)
 JV5942'STATION RECOVERED IN GOOD CONDITION.  A LARGE ANTHILL IS FORMING
 JV5942'ALONGSIDE OF THE MARKER.  THERE IS A CUT LINE FROM AZIMUTH MARK
 JV5942'TO THE STATION.  BY R.L. WAEGELE, BEN DYER AND ASSOC.
 JV5942
 JV5942                          STATION RECOVERY (1964)
 JV5942
 JV5942'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1964
 JV5942'STATION AND REFERENCE MARKS WERE DESTROYED.  STATION MARK WAS FOUND
 JV5942'LYING OUT OF THE GROUND AND THE REFERENCE MARKS COULD NOT BE
 JV5942'LOCATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3488 ***********************************************************************
 JU3488  DESIGNATION -  CEDAR
 JU3488  PID         -  JU3488
 JU3488  STATE/COUNTY-  MD/QUEEN ANNES
 JU3488  COUNTRY     -  US
 JU3488  USGS QUAD   -  CHURCH HILL (2017)
 JU3488
 JU3488                         *CURRENT SURVEY CONTROL
 JU3488  ______________________________________________________________________
 JU3488* NAD 83(1991) POSITION- 39 14 25.09891(N) 075 57 15.61277(W)   ADJUSTED
 JU3488* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JU3488  ______________________________________________________________________
 JU3488  GEOID HEIGHT    -        -33.532 (meters)                     GEOID18
 JU3488  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 JU3488  HORZ ORDER      -  THIRD
 JU3488
 JU3488.The horizontal coordinates were established by classical geodetic methods
 JU3488.and adjusted by the National Geodetic Survey in January 1992.
 JU3488
 JU3488.The orthometric height was scaled from a topographic map.
 JU3488
 JU3488.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3488.GEOID18 height accuracy estimate available here.
 JU3488
 JU3488.Click photographs - Photos may exist for this station.
 JU3488
 JU3488.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3488
 JU3488. The following values were computed from the NAD 83(1991) position.
 JU3488
 JU3488;                    North         East     Units Scale Factor Converg.
 JU3488;SPC MD       -   175,200.291   490,270.159   MT  0.99997004   +0 39 22.7
 JU3488;SPC MD       -   574,802.95  1,608,494.68   sFT  0.99997004   +0 39 22.7
 JU3488;UTM  18      - 4,343,877.967   417,641.783   MT  0.99968351   -0 36 13.4
 JU3488
 JU3488!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3488!SPC MD       -   1.00000483  x   0.99997004  =   0.99997487
 JU3488!UTM  18      -   1.00000483  x   0.99968351  =   0.99968834
 JU3488
 JU3488:                Primary Azimuth Mark                     Grid Az
 JU3488:SPC MD       -  KNIGHT                                   272 08 08.0
 JU3488:UTM  18      -  KNIGHT                                   273 23 44.1
 JU3488
 JU3488_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1764143877(NAD 83)
 JU3488
 JU3488|---------------------------------------------------------------------|
 JU3488| PID    Reference Object                     Distance      Geod. Az  |
 JU3488|                                                           dddmmss.s |
 JU3488| JU3494 SPRY                                375.101 METERS 00144     |
 JU3488| JU3491 KNIGHT                              APPROX. 1.1 KM 2724730.7 |
 JU3488|---------------------------------------------------------------------|
 JU3488
 JU3488                          SUPERSEDED SURVEY CONTROL
 JU3488
 JU3488  NAD 83(1986)-  39 14 25.08855(N)    075 57 15.62884(W) AD(       ) 3
 JU3488  NAD 27      -  39 14 24.68000(N)    075 57 16.84100(W) AD(       ) 3
 JU3488  USSD        -  39 14 25.16800(N)    075 57 16.56400(W) AD(       ) 3
 JU3488
 JU3488.Superseded values are not recommended for survey control.
 JU3488
 JU3488.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3488.See file dsdata.pdf to determine how the superseded data were derived.
 JU3488
 JU3488_MARKER: N = NAIL
 JU3488_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JU3488_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3488
 JU3488  HISTORY     - Date     Condition        Report By
 JU3488  HISTORY     - 1909     MONUMENTED       CGS
 JU3488  HISTORY     - 1938     POOR             CGS
 JU3488
 JU3488                          STATION DESCRIPTION
 JU3488
 JU3488'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JU3488'STATION IS ON THE SOUTHERN SHORE OF CHESTER RIVER, ACROSS THE RIVER
 JU3488'FROM AND ABOUT 400 METERS SW OF SPRYS WHARF, IN A WHEAT FIELD,
 JU3488'ABOUT 1 METER S OF A WIRE FENCE.  STATION IS ON PROPERTY BELONGING
 JU3488'TO MR. TARBUTTON.
 JU3488'
 JU3488'STATION IS MARKED BY A BURIED GLASS BOTTLE AND A NAIL IN CONCRETE
 JU3488'SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE TOP OF A
 JU3488'DRAINTILE AT THE SURFACE OF THE GROUND.
 JU3488'
 JU3488'REFERENCE MARK NO.1 IS A TRIANGLE CUT ON A TREE WITH A NAIL
 JU3488'DRIVEN IN ITS CENTER.  IT IS 3.30 METERS (10.83 FEET) FROM THE
 JU3488'STATION S 62 DEG 03 MIN W. REFERENCE MARK NO.2 IS A NAIL
 JU3488'IN CENTER OF TRIANGLE CUT INTO A FENCE POST.  IT IS 0.98 METER
 JU3488'(3.22 FEET) FROM THE STATION N 19 DEG 25 MIN W.
 JU3488'REFERENCE MARK NO.3 IS A NAIL IN CENTER OF TRIANGLE CUT INTO
 JU3488'FENCE POST.  IT IS 7.01 METERS (23.00 FEET) FROM THE STATION IN
 JU3488'AZIMUTH 215 DEG 47 MIN.  REFERENCE MARK NO.4 IS A BURIED QUART
 JU3488'BOTTLE AND A NAIL IN CONCRETE AT THE TOP OF A DRAINTILE AT THE
 JU3488'SURFACE OF THE GROUND.  IT IS 4.11 METERS (13.48 FEET)
 JU3488'FROM THE STATION IN BEARING N 30 DEG E.
 JU3488
 JU3488                          STATION RECOVERY (1938)
 JU3488
 JU3488'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3488'STATION FOUND IN POOR CONDITION, NO REFERENCE MARKS FOUND.  OLD
 JU3488'TILE WITH BELL PART UP FOUND IN GROUND.  WAS INFORMED BY MAN ON
 JU3488'PROPERTY THAT THE TILE AND BOTTLE HAD BEEN DUG UP.  TILE IS
 JU3488'PROBABLY NOT NOW IN ORIGINAL LOCATION.  STATION AS ORIGINALLY
 JU3488'DESCRIBED IS ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7292 ***********************************************************************
 JV7292  DESIGNATION -  CEDAR
 JV7292  PID         -  JV7292
 JV7292  STATE/COUNTY-  MD/HARFORD
 JV7292  COUNTRY     -  US
 JV7292  USGS QUAD   -  BEL AIR (2016)
 JV7292
 JV7292                         *CURRENT SURVEY CONTROL
 JV7292  ______________________________________________________________________
 JV7292* NAD 83(2011) POSITION- 39 30 08.98410(N) 076 16 26.35254(W)   ADJUSTED
 JV7292* NAD 83(2011) ELLIP HT-    34.167 (meters)        (06/27/12)   ADJUSTED
 JV7292* NAD 83(2011) EPOCH   -  2010.00
 JV7292* NAVD 88 ORTHO HEIGHT -    67.2   (meters)      220.    (feet) GPS OBS
 JV7292  ______________________________________________________________________
 JV7292  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7292  GEOID HEIGHT    -        -33.270 (meters)                     GEOID93
 JV7292  GEOID HEIGHT    -        -32.996 (meters)                     GEOID18
 JV7292  NAD 83(2011) X  -  1,169,325.288 (meters)                     COMP
 JV7292  NAD 83(2011) Y  - -4,787,318.083 (meters)                     COMP
 JV7292  NAD 83(2011) Z  -  4,035,539.045 (meters)                     COMP
 JV7292  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 JV7292
 JV7292  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7292  Standards:
 JV7292         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7292            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7292  -------------------------------------------------------------------
 JV7292  NETWORK    1.06   1.74           0.49   0.34   0.89      0.21117478
 JV7292  -------------------------------------------------------------------
 JV7292  Click here for local accuracies and other accuracy information.
 JV7292
 JV7292.The horizontal coordinates were established by GPS observations
 JV7292.and adjusted by the National Geodetic Survey in June 2012.
 JV7292
 JV7292.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7292.been affixed to the stable North American tectonic plate. See 
 JV7292.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7292
 JV7292.The horizontal coordinates are valid at the epoch date displayed above
 JV7292.which is a decimal equivalence of Year/Month/Day.
 JV7292
 JV7292.The orthometric height was determined by GPS observations and a
 JV7292.high-resolution geoid model.
 JV7292
 JV7292.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7292.GEOID18 height accuracy estimate available here.
 JV7292
 JV7292.Click photographs - Photos may exist for this station.
 JV7292
 JV7292.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7292
 JV7292.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7292
 JV7292.The ellipsoidal height was determined by GPS observations
 JV7292.and is referenced to NAD 83.
 JV7292
 JV7292. The following values were computed from the NAD 83(2011) position.
 JV7292
 JV7292;                    North         East     Units Scale Factor Converg.
 JV7292;SPC MD       -   204,040.296   462,444.584   MT  1.00000960   +0 27 20.4
 JV7292;SPC MD       -   669,422.20  1,517,203.61   sFT  1.00000960   +0 27 20.4
 JV7292;UTM  18      - 4,373,316.170   390,466.045   MT  0.99974772   -0 48 37.7
 JV7292
 JV7292!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7292!SPC MD       -   0.99999464  x   1.00000960  =   1.00000424
 JV7292!UTM  18      -   0.99999464  x   0.99974772  =   0.99974236
 JV7292
 JV7292_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9046673316(NAD 83)
 JV7292
 JV7292|---------------------------------------------------------------------|
 JV7292| PID    Reference Object                     Distance      Geod. Az  |
 JV7292|                                                           dddmmss.s |
 JV7292| JV7293 CEDAR AZ MK                         390.432 METERS 27105     |
 JV7292|---------------------------------------------------------------------|
 JV7292
 JV7292                          SUPERSEDED SURVEY CONTROL
 JV7292
 JV7292  NAD 83(2007)-  39 30 08.98424(N)    076 16 26.35322(W) AD(2002.00) 0
 JV7292  ELLIP H (02/10/07)   34.185  (m)                       GP(2002.00)    
 JV7292  ELLIP H (08/30/02)   34.186  (m)                       GP(       ) 4 2
 JV7292  NAD 83(1991)-  39 30 08.98369(N)    076 16 26.35349(W) AD(       ) 1
 JV7292  ELLIP H (08/17/94)   34.150  (m)                       GP(       ) 4 1
 JV7292
 JV7292.Superseded values are not recommended for survey control.
 JV7292
 JV7292.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7292.See file dsdata.pdf to determine how the superseded data were derived.
 JV7292
 JV7292_MARKER: DD = SURVEY DISK
 JV7292_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7292_STAMPING: 143 CEDAR 1993
 JV7292_MARK LOGO: MD-025
 JV7292_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7292_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7292+STABILITY: SURFACE MOTION
 JV7292_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7292+SATELLITE: SATELLITE OBSERVATIONS - October 30, 2006
 JV7292
 JV7292  HISTORY     - Date     Condition        Report By
 JV7292  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7292  HISTORY     - 20020426 MARK NOT FOUND   USPSQD
 JV7292  HISTORY     - 20061030 GOOD             JMTMD
 JV7292  HISTORY     - 20090113 MARK NOT FOUND   GWS
 JV7292
 JV7292                          STATION DESCRIPTION
 JV7292
 JV7292'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7292'THE STATION IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 0.5 MILES
 JV7292'SOUTHWEST OF THE VILLAGE OF CRESWELL.
 JV7292'TO REACH THE STATION FROM THE INTERSECTION OF STATE ROUTE HIGHWAY AND
 JV7292'STATE HIGHWAY 136/CALVARY ROAD PROCEED SOUTH ALONG STATE HIGHWAY 136
 JV7292'0.3 MILES TO ITS INTERSECTION WITH CEDAR LAND.  TURN RIGHT AND
 JV7292'PROCEED WEST ALONG CEDAR LANE 0.2 MILES TO THE STATION ON THE LEFT.
 JV7292'THE STATION IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7292'CONCRETE FLUSH WITH THE GROUND STAMPED 143 CEDAR 1993.
 JV7292'THE STATION IS 41.7 FEET SOUTHEAST FROM A 6 BY 6 CONCRETE MONUMENT,
 JV7292'69.0 FEET EAST FROM THE CENTERLINE OF DRIVEWAY TO HOUSE NUMBER 1105
 JV7292'12.5 FEET NORTH FROM THE CENTERLINE OF CEDAR LANE, AND 31.0 FEET WEST
 JV7292'FROM THE CENTERLINE OF DRIVEWAY TO HOUSE NUMBER 1101.
 JV7292
 JV7292                          STATION RECOVERY (2002)
 JV7292
 JV7292'RECOVERY NOTE BY US POWER SQUADRON 2002 (TB)
 JV7292'NEW HOUSING DEVELOPMENT BUILT IN LAST YEAR.
 JV7292
 JV7292                          STATION RECOVERY (2006)
 JV7292
 JV7292'RECOVERY NOTE BY JMT ENGINEERING 2006 (GKW)
 JV7292'LAST SENTENCE OF DESCRIPTION SHOULD READ AS FOLLOWS -- THE STATION IS
 JV7292'41.7 FEET SOUTHEAST FROM A 6 BY 6 CONCRETE MONUMENT, 69.0 FEET WEST
 JV7292'FROM CENTERLINE OF DRIVEWAY TO HOUSE NUMBER 1105, 12.5 FEET SOUTH FROM
 JV7292'THE CENTERLINE OF CEDAR LANE, AND 31.0 FEET EAST FROM THE CENTERLINE
 JV7292'OF DRIVEWAY TO HOUSE NUMBER 1101.
 JV7292
 JV7292                          STATION RECOVERY (2009)
 JV7292
 JV7292'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (RHG)
 JV7292'VERY FAMILIAR WITH MARK LOCATION AND USED REGULARLY OVER LAST 5 YEARS.
 JV7292'LOCATION WAS RECENTLY GRADED FOR ROAD IMPROVEMENTS AND A DRAINAGE
 JV7292'DITCH NOW RUNS THROUGH THE MARK'S PREVIOUS LOCATION.  PROPER LOCATION
 JV7292'VERIFIED BY RTN-GNSS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4275 ***********************************************************************
 JV4275  DESIGNATION -  CEDAR 2
 JV4275  PID         -  JV4275
 JV4275  STATE/COUNTY-  MD/MONTGOMERY
 JV4275  COUNTRY     -  US
 JV4275  USGS QUAD   -  KENSINGTON (2016)
 JV4275
 JV4275                         *CURRENT SURVEY CONTROL
 JV4275  ______________________________________________________________________
 JV4275* NAD 83(1993) POSITION- 39 00 20.30025(N) 077 05 54.23613(W)   NO CHECK
 JV4275* NAVD 88 ORTHO HEIGHT -    80.    (meters)      262.    (feet) SCALED
 JV4275  ______________________________________________________________________
 JV4275  GEOID HEIGHT    -        -31.855 (meters)                     GEOID18
 JV4275  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 JV4275  HORZ ORDER      -  SECOND
 JV4275
 JV4275.The horizontal coordinates were established by classical geodetic methods
 JV4275.and adjusted by the National Geodetic Survey in November 1994.
 JV4275
 JV4275.No horizontal observational check was made to the station.
 JV4275
 JV4275.The orthometric height was scaled from a topographic map.
 JV4275
 JV4275.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4275.GEOID18 height accuracy estimate available here.
 JV4275
 JV4275.Click photographs - Photos may exist for this station.
 JV4275
 JV4275.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4275
 JV4275. The following values were computed from the NAD 83(1993) position.
 JV4275
 JV4275;                    North         East     Units Scale Factor Converg.
 JV4275;SPC MD       -   148,636.783   391,477.139   MT  0.99995241   -0 03 42.3
 JV4275;SPC MD       -   487,652.51  1,284,371.25   sFT  0.99995241   -0 03 42.3
 JV4275;SPC VA N     - 2,149,553.958 3,621,397.820   MT  0.99997128   +0 52 29.2
 JV4275;SPC VA N     - 7,052,328.28 11,881,202.68   sFT  0.99997128   +0 52 29.2
 JV4275;UTM  18      - 4,319,497.029   318,301.851   MT  1.00000653   -1 19 15.9
 JV4275
 JV4275!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4275!SPC MD       -   0.99999248  x   0.99995241  =   0.99994489
 JV4275!SPC VA N     -   0.99999248  x   0.99997128  =   0.99996376
 JV4275!UTM  18      -   0.99999248  x   1.00000653  =   0.99999901
 JV4275
 JV4275:                Primary Azimuth Mark                     Grid Az
 JV4275:SPC MD       -  MEDICAL CENTER BEACON                    140 01 38.8
 JV4275:SPC VA N     -  MEDICAL CENTER BEACON                    139 05 27.3
 JV4275:UTM  18      -  MEDICAL CENTER BEACON                    141 17 12.4
 JV4275
 JV4275_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1830119497(NAD 83)
 JV4275
 JV4275|---------------------------------------------------------------------|
 JV4275| PID    Reference Object                     Distance      Geod. Az  |
 JV4275|                                                           dddmmss.s |
 JV4275| JV4309 CEDAR                                68.345 METERS 01707     |
 JV4275| CK6786 CEDAR 2 RM 1                         14.167 METERS 08610     |
 JV4275| CK7878 MEDICAL CENTER BEACON                              1395756.5 |
 JV4275| CK6787 CEDAR 2 RM 2                         18.099 METERS 18205     |
 JV4275|---------------------------------------------------------------------|
 JV4275
 JV4275                          SUPERSEDED SURVEY CONTROL
 JV4275
 JV4275  NAD 83(1991)-  39 00 20.29974(N)    077 05 54.23699(W) AD(       ) 2
 JV4275  NAD 83(1986)-  39 00 20.29936(N)    077 05 54.24680(W) AD(       ) 2
 JV4275  NAD 27      -  39 00 19.90500(N)    077 05 55.32100(W) AD(       ) 2
 JV4275
 JV4275.Superseded values are not recommended for survey control.
 JV4275
 JV4275.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4275.See file dsdata.pdf to determine how the superseded data were derived.
 JV4275
 JV4275_MARKER: DB = BENCH MARK DISK
 JV4275_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4275_STAMPING: CEDAR 2 1955
 JV4275_MARK LOGO: CGS
 JV4275_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4275+STABILITY: SURFACE MOTION
 JV4275
 JV4275  HISTORY     - Date     Condition        Report By
 JV4275  HISTORY     - 1955     MONUMENTED       CGS
 JV4275  HISTORY     - 19950428 MARK NOT FOUND   USPSQD
 JV4275
 JV4275                          STATION DESCRIPTION
 JV4275
 JV4275'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (CAS)
 JV4275'THE STATION IS LOCATED NEAR THE INTERSECTION OF WISCONSIN AVENUE
 JV4275'AND CEDAR LANE, WHICH IS JUST N OF THE NAVAL MEDICAL CENTER.  THE
 JV4275'STATION IS 241 FT. N OF A BRIDGE AT THE MOST N ENTRANCE TO THE
 JV4275'NATIONAL INSTITUTE OF HEALTH, 216 FT. W OF THE W RIGHT-OF-WAY OF
 JV4275'WISCONSIN AVENUE, 200 FT. S OF CEDAR LANE, 17 FT. N OF THE N BANK
 JV4275'OF A SMALL CREEK, AND 17 FT. NE OF A 24-IN. TREE.  THE
 JV4275'SUBSURFACE AND SURFACE STATION MARKS ARE STANDARD BENCH-MARK
 JV4275'DISKS, STAMPED CEDAR 2 1955.  THE SURFACE MARK IS UNDERGROUND
 JV4275'ABOUT 8 IN.
 JV4275'
 JV4275'REFERENCE MARK 1 IS A STANDARD REFERENCE-MARK DISK, SET FLUSH IN
 JV4275'A DRILL HOLE IN THE S END OF A CONCRETE DAM, AND STAMPED CEDAR
 JV4275'2 NO 1 1955.
 JV4275'
 JV4275'REFERENCE MARK 2 IS A STANDARD REFERENCE-MARK DISK, SET FLUSH IN
 JV4275'A DRILL HOLE IN THE S WING OF A CONCRETE DRAIN WHICH DRAINS INTO
 JV4275'THE SMALL CREEK, AND STAMPED CEDAR 2 NO 2 1955.
 JV4275'
 JV4275'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV4275
 JV4275                          STATION RECOVERY (1995)
 JV4275
 JV4275'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4275'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5747 ***********************************************************************
 JV5747  DESIGNATION -  CEDAR 2
 JV5747  PID         -  JV5747
 JV5747  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5747  COUNTRY     -  US
 JV5747  USGS QUAD   -  ROUND BAY (2016)
 JV5747
 JV5747                         *CURRENT SURVEY CONTROL
 JV5747  ______________________________________________________________________
 JV5747* NAD 83(1991) POSITION- 39 03 47.02837(N) 076 33 55.21922(W)   ADJUSTED
 JV5747* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5747  ______________________________________________________________________
 JV5747  GEOID HEIGHT    -        -33.060 (meters)                     GEOID18
 JV5747  LAPLACE CORR    -         -4.87  (seconds)                    DEFLEC18
 JV5747  HORZ ORDER      -  THIRD
 JV5747
 JV5747.The horizontal coordinates were established by classical geodetic methods
 JV5747.and adjusted by the National Geodetic Survey in January 1992.
 JV5747
 JV5747.The orthometric height was scaled from a topographic map.
 JV5747
 JV5747.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5747.GEOID18 height accuracy estimate available here.
 JV5747
 JV5747.Click photographs - Photos may exist for this station.
 JV5747
 JV5747.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5747
 JV5747. The following values were computed from the NAD 83(1991) position.
 JV5747
 JV5747;                    North         East     Units Scale Factor Converg.
 JV5747;SPC MD       -   155,096.496   437,617.872   MT  0.99995517   +0 16 22.1
 JV5747;SPC MD       -   508,845.75  1,435,751.30   sFT  0.99995517   +0 16 22.1
 JV5747;UTM  18      - 4,324,940.808   364,571.478   MT  0.99982584   -0 59 11.7
 JV5747
 JV5747!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5747!SPC MD       -   1.00000507  x   0.99995517  =   0.99996024
 JV5747!UTM  18      -   1.00000507  x   0.99982584  =   0.99983091
 JV5747
 JV5747:                Primary Azimuth Mark                     Grid Az
 JV5747:SPC MD       -  CHAPMAN                                  102 59 11.9
 JV5747:UTM  18      -  CHAPMAN                                  104 14 45.7
 JV5747
 JV5747_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6457124940(NAD 83)
 JV5747
 JV5747|---------------------------------------------------------------------|
 JV5747| PID    Reference Object                     Distance      Geod. Az  |
 JV5747|                                                           dddmmss.s |
 JV5747| JV5748 CHAPMAN                             APPROX. 1.7 KM 1031534.0 |
 JV5747| CB1060 CEDAR 2 RM                           19.910 METERS 21633     |
 JV5747|---------------------------------------------------------------------|
 JV5747
 JV5747                          SUPERSEDED SURVEY CONTROL
 JV5747
 JV5747  NAD 83(1986)-  39 03 47.02492(N)    076 33 55.22946(W) AD(       ) 3
 JV5747  NAD 27      -  39 03 46.63200(N)    076 33 56.35600(W) AD(       ) 3
 JV5747
 JV5747.Superseded values are not recommended for survey control.
 JV5747
 JV5747.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5747.See file dsdata.pdf to determine how the superseded data were derived.
 JV5747
 JV5747_MARKER: DS = TRIANGULATION STATION DISK
 JV5747_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5747
 JV5747  HISTORY     - Date     Condition        Report By
 JV5747  HISTORY     - 1934     MONUMENTED       CGS
 JV5747  HISTORY     - 1961     GOOD             CGS
 JV5747  HISTORY     - 1965     GOOD             CGS
 JV5747
 JV5747                          STATION DESCRIPTION
 JV5747
 JV5747'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5747'THE STATION IS LOCATED ON CEDAR POINT ON THE N SIDE OF THE SEVERN
 JV5747'RIVER DIRECTLY S OF YANTZ CREEK, APPROXIMATELY 40 METERS NE FROM
 JV5747'THE MOST WESTERLY POINT OF LAND, AND 15 METERS N OF THE HIGH-WATER
 JV5747'LINE.
 JV5747'
 JV5747'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5747'CONCRETE.
 JV5747'
 JV5747'STATION AND REFERENCE MARKS ARE STAMPED CEDAR 1934.
 JV5747
 JV5747                          STATION RECOVERY (1961)
 JV5747
 JV5747'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5747'THE STATION WAS RECOVERED IN GOOD CONDITION.  IT IS STAMPED CEDAR
 JV5747'1934.  THE STATION IS LOCATED ON CEDAR POINT ON THE N SIDE OF THE
 JV5747'SEVERN RIVER DIRECTLY S OF YANTZ CREEK, APPROXIMATELY 26 METERS
 JV5747'NE FROM THE MOST WESTERLY POINT OF LAND, AND 9 METERS N OF HW
 JV5747'LINE.
 JV5747'
 JV5747'THE DISK HAS BEEN REMOVED FROM THE RM MONUMENT BUT THE DISTANCE
 JV5747'TO THE DRILL HOLE REMAINS THE SAME AS PUBLISHED.
 JV5747'
 JV5747'TO REACH STATION FROM SEVERNA PARK, TAKE EVERGREEN RD. FROM
 JV5747'HIGHWAY 648 0.2 MILES TO RIGGS AVE.  FOLLOW RIGGS AVE., TURN RIGHT
 JV5747'ON RIDGE RD. AND THEN TAKE BOONE TRAIL AND CEDAR POINT RD. FOR
 JV5747'TOTAL DISTANCE OF 1.2 MILES TO END OF ROAD AND FIRE HYDRANT ON
 JV5747'RIGHT.  STATION IS 411 FT. S 56 DEG W MAG. FROM FIRE HYDRANT.
 JV5747
 JV5747                          STATION RECOVERY (1965)
 JV5747
 JV5747'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (JKW)
 JV5747'STATION MARK RECOVERED IN GOOD CONDITION.  THE REFERENCE MARK
 JV5747'WAS SEARCHED FOR AND NOT RECOVERED.  IT WAS REPORTED SEEN OUT IN
 JV5747'THE WATER.
 JV5747'
 JV5747'THE RECOVERY NOTE BY G.F.W., 1961, IS ADEQUATE FOR RECOVERY
 JV5747'WITH THE FOLLOWING ADDITIONS--
 JV5747'
 JV5747'IT IS NOW ABOUT 57 FT. NE OF THE EXTREME END OF POINT, 4 FT. S
 JV5747'OF METAL WITNESS POST AND 1 FT. W OF A 1 INCH BENT PIECE OF WATER
 JV5747'PIPE STUCK IN THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7293 ***********************************************************************
 JV7293  DESIGNATION -  CEDAR AZ MK
 JV7293  PID         -  JV7293
 JV7293  STATE/COUNTY-  MD/HARFORD
 JV7293  COUNTRY     -  US
 JV7293  USGS QUAD   -  BEL AIR (2016)
 JV7293
 JV7293                         *CURRENT SURVEY CONTROL
 JV7293  ______________________________________________________________________
 JV7293* NAD 83(2011) POSITION- 39 30 09.22172(N) 076 16 42.69137(W)   ADJUSTED
 JV7293* NAD 83(2011) ELLIP HT-    39.950 (meters)        (06/27/12)   ADJUSTED
 JV7293* NAD 83(2011) EPOCH   -  2010.00
 JV7293* NAVD 88 ORTHO HEIGHT -    73.0   (meters)      240.    (feet) GPS OBS
 JV7293  ______________________________________________________________________
 JV7293  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7293  GEOID HEIGHT    -        -33.270 (meters)                     GEOID93
 JV7293  GEOID HEIGHT    -        -32.990 (meters)                     GEOID18
 JV7293  NAD 83(2011) X  -  1,168,946.019 (meters)                     COMP
 JV7293  NAD 83(2011) Y  - -4,787,410.500 (meters)                     COMP
 JV7293  NAD 83(2011) Z  -  4,035,548.379 (meters)                     COMP
 JV7293  LAPLACE CORR    -         -2.71  (seconds)                    DEFLEC18
 JV7293
 JV7293  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7293  Standards:
 JV7293         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7293            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7293  -------------------------------------------------------------------
 JV7293  NETWORK    1.22   2.43           0.55   0.43   1.24      0.19358612
 JV7293  -------------------------------------------------------------------
 JV7293  Click here for local accuracies and other accuracy information.
 JV7293
 JV7293.The horizontal coordinates were established by GPS observations
 JV7293.and adjusted by the National Geodetic Survey in June 2012.
 JV7293
 JV7293.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7293.been affixed to the stable North American tectonic plate. See 
 JV7293.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7293
 JV7293.The horizontal coordinates are valid at the epoch date displayed above
 JV7293.which is a decimal equivalence of Year/Month/Day.
 JV7293
 JV7293.The orthometric height was determined by GPS observations and a
 JV7293.high-resolution geoid model.
 JV7293
 JV7293.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7293.GEOID18 height accuracy estimate available here.
 JV7293
 JV7293.Click photographs - Photos may exist for this station.
 JV7293
 JV7293.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7293
 JV7293.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7293
 JV7293.The ellipsoidal height was determined by GPS observations
 JV7293.and is referenced to NAD 83.
 JV7293
 JV7293. The following values were computed from the NAD 83(2011) position.
 JV7293
 JV7293;                    North         East     Units Scale Factor Converg.
 JV7293;SPC MD       -   204,044.529   462,054.172   MT  1.00000962   +0 27 10.2
 JV7293;SPC MD       -   669,436.09  1,515,922.73   sFT  1.00000962   +0 27 10.2
 JV7293;UTM  18      - 4,373,329.026   390,075.923   MT  0.99974877   -0 48 48.1
 JV7293
 JV7293!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7293!SPC MD       -   0.99999373  x   1.00000962  =   1.00000335
 JV7293!UTM  18      -   0.99999373  x   0.99974877  =   0.99974250
 JV7293
 JV7293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9007573329(NAD 83)
 JV7293
 JV7293|---------------------------------------------------------------------|
 JV7293| PID    Reference Object                     Distance      Geod. Az  |
 JV7293|                                                           dddmmss.s |
 JV7293| JV7292 CEDAR                               390.432 METERS 09104     |
 JV7293|---------------------------------------------------------------------|
 JV7293
 JV7293                          SUPERSEDED SURVEY CONTROL
 JV7293
 JV7293  NAD 83(2007)-  39 30 09.22186(N)    076 16 42.69207(W) AD(2002.00) 0
 JV7293  ELLIP H (02/10/07)   39.968  (m)                       GP(2002.00)    
 JV7293  ELLIP H (08/30/02)   39.975  (m)                       GP(       ) 4 2
 JV7293  NAD 83(1991)-  39 30 09.22133(N)    076 16 42.69228(W) AD(       ) 1
 JV7293  ELLIP H (08/17/94)   39.926  (m)                       GP(       ) 4 1
 JV7293
 JV7293.Superseded values are not recommended for survey control.
 JV7293
 JV7293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7293.See file dsdata.pdf to determine how the superseded data were derived.
 JV7293
 JV7293_MARKER: DD = SURVEY DISK
 JV7293_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7293_STAMPING: 143 CEDAR AZ MK 1993
 JV7293_MARK LOGO: MD-025
 JV7293_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7293_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7293+STABILITY: SURFACE MOTION
 JV7293_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7293+SATELLITE: SATELLITE OBSERVATIONS - October 30, 2006
 JV7293
 JV7293  HISTORY     - Date     Condition        Report By
 JV7293  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7293  HISTORY     - 20020426 MARK NOT FOUND   USPSQD
 JV7293  HISTORY     - 20061030 GOOD             JMTMD
 JV7293  HISTORY     - 20090112 POOR             GWS
 JV7293
 JV7293                          STATION DESCRIPTION
 JV7293
 JV7293'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7293'THE AZIMUTH MARK IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 0.8
 JV7293'MILES SOUTHWEST OF THE VILLAGE OF CRESWELL.
 JV7293'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE HIGHWAY 543
 JV7293'AND STATE HIGHWAY 136 PROCEED SOUTH ALONG STATE HIGHWAY 136 0.3 MILES
 JV7293'TO ITS INTERSECTION WITH CEDAR LANE.  TURN RIGHT AND PROCEED WEST
 JV7293'ALONG CEDAR LANE 0.2 MILES PASSING THE STATION ON THE LEFT. CONTINUE
 JV7293'WEST ALONG CEDAR LANE 0.2 MILES TO THE AZIMUTH MARK ON THE RIGHT.
 JV7293'THE AZIMUTH MARK IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7293'CONCRETE FLUSH WITH THE GROUND STAMPED 143 CEDAR AZ MK 1993.
 JV7293'THE AZIMUTH MARK IS 63.8 FEET SOUTHEAST FROM POWER LINE POLE NUMBER
 JV7293'69193, 11.2 FEET SOUTH FROM THE CENTERLINE OF CEDAR LANE AND 2.7 FEET
 JV7293'SOUTH FROM THE FACE OF CURB OF CEDAR LANE.
 JV7293
 JV7293                          STATION RECOVERY (2002)
 JV7293
 JV7293'RECOVERY NOTE BY US POWER SQUADRON 2002 (TB)
 JV7293'NEW HOUSING DEVELOPMENT WITHIN THE LAST YEAR.
 JV7293
 JV7293                          STATION RECOVERY (2006)
 JV7293
 JV7293'RECOVERY NOTE BY JMT ENGINEERING 2006 (GKW)
 JV7293'LAST SENTENCE OF DESCRIPTION SHOULD READ AS FOLLOWS -- THE AZIMUTH
 JV7293'MARK IS 63.8 FEET NORTHWEST FROM POWER LINE POLE NUMBER 69193, 11.2
 JV7293'FEET NORTH FROM CENTERLINE OF CEDAR LANE. -- THERE IS NO CURB TO
 JV7293'MEASURE FROM FOR THE LAST DESCRIPTION.
 JV7293
 JV7293                          STATION RECOVERY (2009)
 JV7293
 JV7293'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (JMS)
 JV7293'TOP OF DISK GOUGED BY HEAVY MACHINERY DURING RECENT EXTENSIVE
 JV7293'REGRADING AROUND LOCATION OF MARK.  THE REFERENCE TRIANGLE IS STILL
 JV7293'VISIBLE BUT THE CENTER DIMPLE HAS BEEN OBSCURED.  RTN-GNSS LOCATION
 JV7293'SEEMS ACCURATE BUT CANNOT DISMISS WHETHER MARK HAS BEEN DISTURBED DUE
 JV7293'TO THE AMOUNT OF OBVIOUS DAMAGE.  MARK IS STILL FLUSH WITH GROUND
 JV7293'AFTER NEW GRADING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4220 ***********************************************************************
 JV4220  DESIGNATION -  CEDAR HEIGHTS
 JV4220  PID         -  JV4220
 JV4220  STATE/COUNTY-  MD/MONTGOMERY
 JV4220  COUNTRY     -  US
 JV4220  USGS QUAD   -  DAMASCUS (2016)
 JV4220
 JV4220                         *CURRENT SURVEY CONTROL
 JV4220  ______________________________________________________________________
 JV4220* NAD 83(1993) POSITION- 39 15 12.61834(N) 077 13 41.45131(W)   ADJUSTED
 JV4220* NAVD 88 ORTHO HEIGHT -   245.4   (meters)      805.    (feet) VERTCON3
 JV4220  ______________________________________________________________________
 JV4220  GEOID HEIGHT    -        -31.852 (meters)                     GEOID18
 JV4220  LAPLACE CORR    -          2.69  (seconds)                    DEFLEC18
 JV4220  HORZ ORDER      -  FIRST
 JV4220
 JV4220.The horizontal coordinates were established by classical geodetic methods
 JV4220.and adjusted by the National Geodetic Survey in November 1994.
 JV4220
 JV4220.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4220.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4220
 JV4220.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4220.GEOID18 height accuracy estimate available here.
 JV4220
 JV4220.Click photographs - Photos may exist for this station.
 JV4220
 JV4220.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4220
 JV4220. The following values were computed from the NAD 83(1993) position.
 JV4220
 JV4220;                    North         East     Units Scale Factor Converg.
 JV4220;SPC MD       -   176,173.307   380,304.817   MT  0.99997153   -0 08 35.6
 JV4220;SPC MD       -   577,995.26  1,247,716.72   sFT  0.99997153   -0 08 35.6
 JV4220;UTM  18      - 4,347,275.096   307,738.525   MT  1.00005515   -1 24 37.1
 JV4220
 JV4220!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4220!SPC MD       -   0.99996650  x   0.99997153  =   0.99993803
 JV4220!UTM  18      -   0.99996650  x   1.00005515  =   1.00002165
 JV4220
 JV4220:                Primary Azimuth Mark                     Grid Az
 JV4220:SPC MD       -  CEDAR HEIGHTS AZ MK                      321 55 13.2
 JV4220:UTM  18      -  CEDAR HEIGHTS AZ MK                      323 11 14.7
 JV4220
 JV4220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0773847275(NAD 83)
 JV4220
 JV4220|---------------------------------------------------------------------|
 JV4220| PID    Reference Object                     Distance      Geod. Az  |
 JV4220|                                                           dddmmss.s |
 JV4220| JV4219 DAMASCUS DELTA SITE MICROWAVE       APPROX.11.5 KM 0251709.1 |
 JV4220| JV4223 DAMASCUS MUN TANK                   APPROX. 4.1 KM 0262344.6 |
 JV4220| JV4225 DAMASCUS COUNTY HWY DEPT MAST       APPROX. 4.1 KM 0264038.8 |
 JV4220| CK6789 CEDAR HEIGHTS RM 1                                 06651     |
 JV4220| JV4408 WOODFIELD WESLEY GROVE METH CH      APPROX. 3.6 KM 1054833.5 |
 JV4220| JV4426 LAYTONSVILLE ST PAUL METH CH        APPROX. 8.6 KM 1212222.9 |
 JV4220| JV4457 CLARKSBURG METH CH SPIRE            APPROX. 4.7 KM 2522925.3 |
 JV4220| CK6788 CEDAR HEIGHTS AZ MK                                3214637.6 |
 JV4220| CK6790 CEDAR HEIGHTS RM 2                   38.533 METERS 32918     |
 JV4220|---------------------------------------------------------------------|
 JV4220
 JV4220                          SUPERSEDED SURVEY CONTROL
 JV4220
 JV4220  NAD 83(1991)-  39 15 12.61787(N)    077 13 41.45127(W) AD(       ) 1
 JV4220  NAD 83(1986)-  39 15 12.61801(N)    077 13 41.46175(W) AD(       ) 1
 JV4220  NAD 27      -  39 15 12.23800(N)    077 13 42.51933(W) AD(       ) 1
 JV4220  NGVD 29 (07/19/86)  245.6    (m)          806.     (f) VERT ANG       
 JV4220
 JV4220.Superseded values are not recommended for survey control.
 JV4220
 JV4220.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4220.See file dsdata.pdf to determine how the superseded data were derived.
 JV4220
 JV4220_MARKER: DS = TRIANGULATION STATION DISK
 JV4220_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4220_STAMPING: CEDAR HEIGHTS 1969
 JV4220_MARK LOGO: CGS
 JV4220_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4220+STABILITY: SURFACE MOTION
 JV4220
 JV4220  HISTORY     - Date     Condition        Report By
 JV4220  HISTORY     - 1969     MONUMENTED       CGS
 JV4220
 JV4220                          STATION DESCRIPTION
 JV4220
 JV4220'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4220'THE STATION IS ABOUT 2-1/2 MILES SOUTH-SOUTHWEST OF DAMASCUS AND
 JV4220'1/2 MILE NORTH-NORTHEAST OF THE VILLAGE OF CEDAR GROVE, NEAR A
 JV4220'LARGE WATER TANK ON THE SOUTH SIDE OF STATE HIGHWAY 27.
 JV4220'
 JV4220'TO REACH THE STATION FROM THE CEDAR GROVE SCHOOL, GO NORTHEAST
 JV4220'ON STATE HIGHWAY 27 FOR 0.3 MILE TO THE JUNCTION WITH KINGS
 JV4220'VALLEY ROAD.  TO REACH THE AZIMUTH MARK FROM THIS POINT, TURN
 JV4220'LEFT AND GO NORTHERLY ON KINGS VALLEY ROAD FOR 0.5 MILE TO THE
 JV4220'MARK ON THE RIGHT.  CONTINUE NORTHEAST ON HIGHWAY 27 FOR 0.1 MILE
 JV4220'TO THE WATER TANK AND THE STATION ON THE RIGHT.
 JV4220'
 JV4220'STATION MARK IS A STANDARD DISK, STAMPED CEDAR HEIGHTS 1969, SET
 JV4220'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV4220'IS FLUSH WITH THE GROUND SURFACE.  IT IS 167.0 FEET SOUTH OF
 JV4220'THE CENTERLINE OF STATE HIGHWAY 27, 49.5 FEET WEST OF THE
 JV4220'SOUTHWEST CORNER OF A BRICK BUILDING, 11.8 FEET NORTH OF A SMALL
 JV4220'PINE TREE AND 9 FEET EAST OF FENCE.  THE UNDERGROUND MARK IS 40
 JV4220'INCHES BELOW THE GROUND SURFACE.
 JV4220'
 JV4220'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CEDAR HEIGHTS NO 1
 JV4220'1969, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 JV4220'DIAMETER, THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 49.4 FEET
 JV4220'SOUTHEAST OF THE SOUTHEAST CORNER OF THE BRICK BUILDING, 2.1 FEET
 JV4220'WEST OF A NORTH-SOUTH FENCE, 1.7 FEET NORTH OF AN EAST-WEST FENCE
 JV4220'AND ABOUT THE SAME ELEVATION AS THE STATION.
 JV4220'
 JV4220'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CEDAR HEIGHTS NO 2
 JV4220'1969, CEMENTED IN A DRILL HOLE IN THE CONCRETE FOOTING OF THE WEST
 JV4220'GATE POST OF A GATE.  IT IS 42.0 FEET SOUTH OF THE CENTERLINE OF
 JV4220'HIGHWAY 27, 1.0 FEET WEST OF THE WEST GATE POST OF THE GATE AND
 JV4220'ABOUT 3 FEET LOWER THAN THE STATION.
 JV4220'
 JV4220'AZIMUTH MARK IS A STANDARD DISK, STAMPED CEDAR HEIGHTS 1969,
 JV4220'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV4220'THAT PROJECTS 6 INCHES ABOVE THE GROUND.  IT IS 20.0 FEET EAST
 JV4220'OF THE CENTERLINE KINGS VALLEY ROAD, 1.7 FEET NORTH OF A WITNESS
 JV4220'POST AND 1.4 FEET SOUTH OF TELEPHONE LINE POLE NUMBER 13.
 JV4220'
 JV4220'THE DISTANCE BETWEEN REFERENCE MARK 1 AND 2 WAS NOT MEASURED DUE
 JV4220'TO OBSTRUCTIONS.
 JV4220'
 JV4220'MBCS IS A MARYLAND BUREAU OF CONTROL SURVEYS DISK, STAMPED CEDAR
 JV4220'1961, SET IN THE TOP OF A CONCRETE POST, 6 INCHES IN DIAMETER,
 JV4220'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 92.0 FEET SOUTH OF
 JV4220'THE CENTERLINE OF KINGS VALLEY ROAD, 63.0 FEET WEST OF THE
 JV4220'CENTERLINE OF STATE HIGHWAY 27 AND 32.3 FEET NORTH OF THE
 JV4220'NORTHEAST CORNER OF A HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4221 ***********************************************************************
 JV4221  DESIGNATION -  CEDAR HEIGHTS WSSC TANK
 JV4221  PID         -  JV4221
 JV4221  STATE/COUNTY-  MD/MONTGOMERY
 JV4221  COUNTRY     -  US
 JV4221  USGS QUAD   -  DAMASCUS (2016)
 JV4221
 JV4221                         *CURRENT SURVEY CONTROL
 JV4221  ______________________________________________________________________
 JV4221* NAD 83(1993) POSITION- 39 15 11.78334(N) 077 13 40.01764(W)   ADJUSTED
 JV4221  ______________________________________________________________________
 JV4221  GEOID HEIGHT    -        -31.851 (meters)                     GEOID18
 JV4221  LAPLACE CORR    -          2.65  (seconds)                    DEFLEC18
 JV4221  HORZ ORDER      -  THIRD
 JV4221
 JV4221.The horizontal coordinates were established by classical geodetic methods
 JV4221.and adjusted by the National Geodetic Survey in November 1994.
 JV4221
 JV4221.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4221.GEOID18 height accuracy estimate available here.
 JV4221
 JV4221.Click photographs - Photos may exist for this station.
 JV4221
 JV4221.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4221
 JV4221. The following values were computed from the NAD 83(1993) position.
 JV4221
 JV4221;                    North         East     Units Scale Factor Converg.
 JV4221;SPC MD       -   176,147.471   380,339.126   MT  0.99997150   -0 08 34.7
 JV4221;SPC MD       -   577,910.49  1,247,829.28   sFT  0.99997150   -0 08 34.7
 JV4221;UTM  18      - 4,347,248.506   307,772.257   MT  1.00005499   -1 24 36.2
 JV4221
 JV4221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0777247248(NAD 83)
 JV4221
 JV4221                          SUPERSEDED SURVEY CONTROL
 JV4221
 JV4221  NAD 83(1991)-  39 15 11.78287(N)    077 13 40.01759(W) AD(       ) 3
 JV4221  NAD 83(1986)-  39 15 11.78227(N)    077 13 40.02874(W) AD(       ) 3
 JV4221  NAD 27      -  39 15 11.40336(N)    077 13 41.08530(W) AD(       ) 3
 JV4221
 JV4221.Superseded values are not recommended for survey control.
 JV4221
 JV4221.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4221.See file dsdata.pdf to determine how the superseded data were derived.
 JV4221
 JV4221_MARKER: 51 = TANK
 JV4221_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4221+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4221
 JV4221  HISTORY     - Date     Condition        Report By
 JV4221  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4221  HISTORY     - 20031102 GOOD             USPSQD
 JV4221  HISTORY     - 20050303 GOOD             USPSQD
 JV4221
 JV4221                          STATION DESCRIPTION
 JV4221
 JV4221'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4221'THE STATION IS ABOUT 2-1/2 MILES SOUTH-SOUTHWEST OF DAMASCUS
 JV4221'AND 1/2 MILE NORTH-NORTHEAST OF THE VILLAGE OF CEDAR GROVE.
 JV4221'
 JV4221'THE STATION IS THE CENTER OF THE BASE OF A WATER TANK, NOT
 JV4221'ELEVATED, THAT IS APPROXIMATELY 45 FEET HIGH.
 JV4221'
 JV4221'A TRAVERSE CONNECTION WAS MADE FROM TRIANGULATION STATION CEDAR
 JV4221'HEIGHTS, THE DISTANCE BEING 140.92 FEET, (42.952 METERS) SOUTHEAST
 JV4221'OF STATION CEDAR HEIGHTS.
 JV4221'
 JV4221'THIS STATION WAS NOT INTERSECTED.
 JV4221
 JV4221                          STATION RECOVERY (2003)
 JV4221
 JV4221'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4221'RECOVERED IN GOOD CONDITION.
 JV4221
 JV4221                          STATION RECOVERY (2005)
 JV4221
 JV4221'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4221'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4224 ***********************************************************************
 JV4224  DESIGNATION -  CEDAR MBCS 1969
 JV4224  PID         -  JV4224
 JV4224  STATE/COUNTY-  MD/MONTGOMERY
 JV4224  COUNTRY     -  US
 JV4224  USGS QUAD   -  DAMASCUS (2016)
 JV4224
 JV4224                         *CURRENT SURVEY CONTROL
 JV4224  ______________________________________________________________________
 JV4224* NAD 83(1993) POSITION- 39 15 11.45784(N) 077 13 48.43503(W)   ADJUSTED
 JV4224* NAVD 88 ORTHO HEIGHT -   210.    (meters)      689.    (feet) SCALED
 JV4224  ______________________________________________________________________
 JV4224  GEOID HEIGHT    -        -31.854 (meters)                     GEOID18
 JV4224  LAPLACE CORR    -          2.80  (seconds)                    DEFLEC18
 JV4224  HORZ ORDER      -  SECOND
 JV4224
 JV4224.The horizontal coordinates were established by classical geodetic methods
 JV4224.and adjusted by the National Geodetic Survey in November 1994.
 JV4224
 JV4224.The orthometric height was scaled from a topographic map.
 JV4224
 JV4224.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4224.GEOID18 height accuracy estimate available here.
 JV4224
 JV4224.Click photographs - Photos may exist for this station.
 JV4224
 JV4224.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4224
 JV4224. The following values were computed from the NAD 83(1993) position.
 JV4224
 JV4224;                    North         East     Units Scale Factor Converg.
 JV4224;SPC MD       -   176,137.940   380,137.285   MT  0.99997149   -0 08 40.0
 JV4224;SPC MD       -   577,879.22  1,247,167.08   sFT  0.99997149   -0 08 40.0
 JV4224;UTM  18      - 4,347,243.440   307,570.237   MT  1.00005595   -1 24 41.5
 JV4224
 JV4224!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4224!SPC MD       -   0.99997208  x   0.99997149  =   0.99994357
 JV4224!UTM  18      -   0.99997208  x   1.00005595  =   1.00002803
 JV4224
 JV4224_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0757047243(NAD 83)
 JV4224
 JV4224                          SUPERSEDED SURVEY CONTROL
 JV4224
 JV4224  NAD 83(1991)-  39 15 11.45735(N)    077 13 48.43498(W) AD(       ) 2
 JV4224  NAD 83(1986)-  39 15 11.45750(N)    077 13 48.44547(W) AD(       ) 2
 JV4224  NAD 27      -  39 15 11.07750(N)    077 13 49.50285(W) AD(       ) 2
 JV4224
 JV4224.Superseded values are not recommended for survey control.
 JV4224
 JV4224.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4224.See file dsdata.pdf to determine how the superseded data were derived.
 JV4224
 JV4224_MARKER: DD = SURVEY DISK
 JV4224_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4224_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4224+STABILITY: SURFACE MOTION
 JV4224
 JV4224  HISTORY     - Date     Condition        Report By
 JV4224  HISTORY     - 1969     MONUMENTED       MDBCSM
 JV4224
 JV4224                          STATION DESCRIPTION
 JV4224
 JV4224'DESCRIBED BY MD BUR SURV AND MAPS 1969 (JBJ)
 JV4224'THE STATION IS ABOUT 2-1/2 MILES SOUTH-SOUTHWEST OF DAMASCUS AND
 JV4224'1/4 MILE NORTH-NORTHEAST OF THE VILLAGE OF CEDAR GROVE.
 JV4224'
 JV4224'THE MARK IS A BRONZE DISK OF THE MARYLAND BUREAU OF CONTROL
 JV4224'SURVEYS, STAMPED CEDAR 1961, SET IN THE TOP OF A ROUND CONCRETE
 JV4224'POST, 6 INCHES IN DIAMETER, THAT IS FLUSH WITH THE GROUND
 JV4224'SURFACE.  IT IS 92.0 FEET SOUTH OF THE CENTERLINE OF KINGS
 JV4224'VALLEY ROAD, 63.0 FEET WEST OF THE CENTERLINE OF STATE HIGHWAY
 JV4224'27 AND 32.3 FEET NORTH OF THE NORTHEAST CORNER OF A HOUSE.
 JV4224'
 JV4224'A GEODIMETER TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION
 JV4224'CEDAR HEIGHTS, THE DISTANCE BEING 161.230 METERS, (528.97 FEET)
 JV4224'EAST-NORTHEAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6815 ***********************************************************************
 HV6815  DESIGNATION -  CEDAR MSFC 1908
 HV6815  PID         -  HV6815
 HV6815  STATE/COUNTY-  MD/ST MARYS
 HV6815  COUNTRY     -  US
 HV6815  USGS QUAD   -  LEONARDTOWN (2016)
 HV6815
 HV6815                         *CURRENT SURVEY CONTROL
 HV6815  ______________________________________________________________________
 HV6815* NAD 83(1993) POSITION- 38 16 23.06509(N) 076 37 51.15286(W)   ADJUSTED
 HV6815* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6815  ______________________________________________________________________
 HV6815  GEOID HEIGHT    -        -33.923 (meters)                     GEOID18
 HV6815  LAPLACE CORR    -         -5.30  (seconds)                    DEFLEC18
 HV6815  HORZ ORDER      -  THIRD
 HV6815
 HV6815.The horizontal coordinates were established by classical geodetic methods
 HV6815.and adjusted by the National Geodetic Survey in November 1994.
 HV6815
 HV6815.The orthometric height was scaled from a topographic map.
 HV6815
 HV6815.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6815.GEOID18 height accuracy estimate available here.
 HV6815
 HV6815.Click photographs - Photos may exist for this station.
 HV6815
 HV6815.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6815
 HV6815. The following values were computed from the NAD 83(1993) position.
 HV6815
 HV6815;                    North         East     Units Scale Factor Converg.
 HV6815;SPC MD       -    67,379.274   432,300.564   MT  1.00000479   +0 13 54.0
 HV6815;SPC MD       -   221,060.17  1,418,306.10   sFT  1.00000479   +0 13 54.0
 HV6815;SPC VA N     - 2,068,974.733 3,663,542.346   MT  0.99996635   +1 09 59.6
 HV6815;SPC VA N     - 6,787,961.27 12,019,471.85   sFT  0.99996635   +1 09 59.6
 HV6815;UTM  18      - 4,237,371.609   357,341.516   MT  0.99985064   -1 00 37.3
 HV6815
 HV6815!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6815!SPC MD       -   1.00000521  x   1.00000479  =   1.00001000
 HV6815!SPC VA N     -   1.00000521  x   0.99996635  =   0.99997156
 HV6815!UTM  18      -   1.00000521  x   0.99985064  =   0.99985585
 HV6815
 HV6815:                Primary Azimuth Mark                     Grid Az
 HV6815:SPC MD       -  PINE MSFC 1908                           169 06 20.0
 HV6815:SPC VA N     -  PINE MSFC 1908                           168 10 14.4
 HV6815:UTM  18      -  PINE MSFC 1908                           170 20 51.3
 HV6815
 HV6815_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5734137371(NAD 83)
 HV6815
 HV6815|---------------------------------------------------------------------|
 HV6815| PID    Reference Object                     Distance      Geod. Az  |
 HV6815|                                                           dddmmss.s |
 HV6815| HV6824 CORN MSFC 1908                      425.532 METERS 0294614.6 |
 HV6815| HV6813 PINE MSFC 1908                      499.437 METERS 1692014.0 |
 HV6815|---------------------------------------------------------------------|
 HV6815
 HV6815                          SUPERSEDED SURVEY CONTROL
 HV6815
 HV6815  NAD 83(1991)-  38 16 23.06426(N)    076 37 51.15763(W) AD(       ) 3
 HV6815  NAD 83(1986)-  38 16 23.06502(N)    076 37 51.16936(W) AD(       ) 3
 HV6815  NAD 27      -  38 16 22.58900(N)    076 37 52.29000(W) AD(       ) 3
 HV6815  USSD        -  38 16 23.20000(N)    076 37 52.15800(W) AD(       ) 3
 HV6815
 HV6815.Superseded values are not recommended for survey control.
 HV6815
 HV6815.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6815.See file dsdata.pdf to determine how the superseded data were derived.
 HV6815
 HV6815_MARKER: H = DRILL HOLE
 HV6815_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6815_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6815+STABILITY: SURFACE MOTION
 HV6815
 HV6815  HISTORY     - Date     Condition        Report By
 HV6815  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6815  HISTORY     - 1942     GOOD             CGS
 HV6815  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6815
 HV6815                          STATION DESCRIPTION
 HV6815
 HV6815'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6815'STATION IS ON THE EASTERN SHORE OF UPPER BRETONS BAY, ON A MARSH
 HV6815'POINT, THE FIRST PROMINENT POINT N OF ENTRANCE TO MOULDY CREEK,
 HV6815'ABOUT 2 FEET ABOVE HIGH WATER, 15 YARDS E OF SHORE, 50 YARDS N OF
 HV6815'CULTIVATED FIELD, BOUNDED BY RAIL FENCE AND SMALL CEDAR TREES, AND
 HV6815'DIRECTLY IN FRONT OF A DENSE GROWTH OF SMALL CEDAR TREES AND
 HV6815'MYRTLE BUSHES.
 HV6815'
 HV6815'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6815'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6815'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6815'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6815'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6815'AS FOLLOWS--NAIL IN BLAZE IN 6-INCH CEDAR TREE, 31.91 METERS
 HV6815'(104.7 FEET), S 14 DEG 1 MIN W.  NAIL IN BLAZE IN 8-INCH CEDAR
 HV6815'TREE, 21.30 METERS (69.9 FEET), S 44 DEG 57 MIN W.  N CHIMNEY OF
 HV6815'SMALL HOUSE, 3/8 MILE, N 60 DEG 41 MIN W.  S GABLE OF DUKE HOUSE,
 HV6815'1/2 MILE, N 30 DEG 20 MIN W.  SW CHIMNEY OF KEY HOUSE, 1-1/4
 HV6815'MILES, N 10 DEG 38 MIN W.  CROSS ON CATHOLIC ACADEMY, 1-3/4 MILES,
 HV6815'N 1 DEG 38 MIN W.  NAIL IN BLAZE IN 3-INCH CEDAR TREE, 5.81 METERS
 HV6815'(19.06 FEET), N 64 DEG 28 MIN E.  NAIL IN BLAZE IN 3-INCH CEDAR
 HV6815'TREE, 2.47 METERS (8.10 FEET), N 83 DEG 17 MIN E. NAIL IN BLAZE IN
 HV6815'4-INCH CEDAR TREE, 3.45 METERS (11.32 FEET), S 43 DEG 48 MIN E.
 HV6815
 HV6815                          STATION RECOVERY (1942)
 HV6815
 HV6815'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV6815'STATION RECOVERED, TOP OF MONUMENT IS BADLY CRACKED ON EXPOSED
 HV6815'SURFACE.
 HV6815'
 HV6815'REACHED FROM LEONARDSTOWN FROM THE SQUARE BY GOING SE ON ROUTE 5
 HV6815'FOR 1.8 MILES, TURN RIGHT ON PAVED ROAD, GO 0.25 MILE, TAKE RIGHT
 HV6815'FORK, DIRT ROAD, GO 0.2 MILE, TAKE RIGHT FORK, GO 0.45 MILE TO
 HV6815'FARMHOUSE (RICHARD WILLIAMS), GO THROUGH GATE ON S SIDE OF BARN
 HV6815'(LEFT) ACROSS SMALL PASTURE AND INTO WHEAT FIELD, THENCE ALONG THE
 HV6815'RIGHT-HAND BORDER OF THIS FIELD FOR 0.4 MILE (FROM HOUSE) TO A
 HV6815'POINT ABOUT 100 FEET FROM EXTREME W END OF FIELD.  STATION IS 150
 HV6815'FEET N OF THIS POINT AND AT THE NW EDGE OF CEDAR GROVE.
 HV6815
 HV6815                          STATION RECOVERY (1958)
 HV6815
 HV6815'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6815'A THOROUGH SEARCH WAS MADE FOR THIS STATION, WITHOUT RESULTS.  THE
 HV6815'ORIGINAL DESCRIPTION PLACES THIS STATION 2 FEET ABOVE HIGH WATER
 HV6815'WHEREAS THE REFERENCE DISTANCES GIVEN BY C.T.H. IN 1942 PLACE THE
 HV6815'STATION IN A MARSH AT HIGH WATER.  THE STATION HAS PROBABLY BEEN
 HV6815'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5946 ***********************************************************************
 HV5946  DESIGNATION -  CEDAR POINT 1901
 HV5946  PID         -  HV5946
 HV5946  STATE/COUNTY-  MD/DORCHESTER
 HV5946  COUNTRY     -  US
 HV5946  USGS QUAD   -  CHURCH CREEK (2016)
 HV5946
 HV5946                         *CURRENT SURVEY CONTROL
 HV5946  ______________________________________________________________________
 HV5946* NAD 83(1991) POSITION- 38 33 04.79832(N) 076 13 17.13944(W)   ADJUSTED
 HV5946* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5946  ______________________________________________________________________
 HV5946  GEOID HEIGHT    -        -34.746 (meters)                     GEOID18
 HV5946  LAPLACE CORR    -         -5.32  (seconds)                    DEFLEC18
 HV5946  HORZ ORDER      -  THIRD
 HV5946
 HV5946.The horizontal coordinates were established by classical geodetic methods
 HV5946.and adjusted by the National Geodetic Survey in January 1992.
 HV5946
 HV5946.The orthometric height was scaled from a topographic map.
 HV5946
 HV5946.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5946.GEOID18 height accuracy estimate available here.
 HV5946
 HV5946.Click photographs - Photos may exist for this station.
 HV5946
 HV5946.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5946
 HV5946. The following values were computed from the NAD 83(1991) position.
 HV5946
 HV5946;                    North         East     Units Scale Factor Converg.
 HV5946;SPC MD       -    98,490.829   467,865.648   MT  0.99996579   +0 29 19.2
 HV5946;SPC MD       -   323,131.99  1,534,989.21   sFT  0.99996579   +0 29 19.2
 HV5946;UTM  18      - 4,267,696.497   393,567.923   MT  0.99973950   -0 45 40.6
 HV5946
 HV5946!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5946!SPC MD       -   1.00000533  x   0.99996579  =   0.99997112
 HV5946!UTM  18      -   1.00000533  x   0.99973950  =   0.99974483
 HV5946
 HV5946:                Primary Azimuth Mark                     Grid Az
 HV5946:SPC MD       -  THORNAPPLE 1901                          133 36 03.7
 HV5946:UTM  18      -  THORNAPPLE 1901                          134 51 03.5
 HV5946
 HV5946_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9356767696(NAD 83)
 HV5946
 HV5946|---------------------------------------------------------------------|
 HV5946| PID    Reference Object                     Distance      Geod. Az  |
 HV5946|                                                           dddmmss.s |
 HV5946| HV5917 PHILLIPS 1901                       APPROX. 1.4 KM 0094121.9 |
 HV5946| HV5889 THORNAPPLE 1901                     APPROX. 0.8 KM 1340522.9 |
 HV5946|---------------------------------------------------------------------|
 HV5946
 HV5946                          SUPERSEDED SURVEY CONTROL
 HV5946
 HV5946  NAD 83(1986)-  38 33 04.79591(N)    076 13 17.15501(W) AD(       ) 3
 HV5946  NAD 27      -  38 33 04.38600(N)    076 13 18.34200(W) AD(       ) 3
 HV5946  USSD        -  38 33 04.77800(N)    076 13 18.14300(W) AD(       ) 3
 HV5946
 HV5946.Superseded values are not recommended for survey control.
 HV5946
 HV5946.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5946.See file dsdata.pdf to determine how the superseded data were derived.
 HV5946
 HV5946
 HV5946  HISTORY     - Date     Condition        Report By
 HV5946  HISTORY     - 1901     MONUMENTED       CGS
 HV5946  HISTORY     - 1903     GOOD             CGS
 HV5946
 HV5946                          STATION DESCRIPTION
 HV5946
 HV5946'DESCRIBED BY COAST AND GEODETIC SURVEY 1903
 HV5946'ON N SIDE OF LITTLE CHOPTANK RIVER, ON CEDAR POINT, OPPOSITE
 HV5946'MOUTH OF FISHING CREEK, ON A SMALL BEACH OF SAND AND SHELLS.
 HV5946'MARKED BY AN OAK STUB, WITH TWO REFERENCE MARKS COMPOSED OF
 HV5946'WHITEWASHED PLANKS, 10 METERS FROM STATION, AND NE AND SSE FROM
 HV5946'IT, RESPECTIVELY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6675 ***********************************************************************
 HV6675  DESIGNATION -  CEDAR POINT 2
 HV6675  PID         -  HV6675
 HV6675  STATE/COUNTY-  MD/ST MARYS
 HV6675  COUNTRY     -  US
 HV6675  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6675
 HV6675                         *CURRENT SURVEY CONTROL
 HV6675  ______________________________________________________________________
 HV6675* NAD 83(1991) POSITION- 38 17 49.87280(N) 076 22 32.71027(W)   ADJUSTED
 HV6675* NAD 83(1991) ELLIP HT-   -32.138 (meters)        (01/27/92)   ADJUSTED
 HV6675* NAVD 88 ORTHO HEIGHT -     2.6   (meters)        9.    (feet) VERTCON3
 HV6675  ______________________________________________________________________
 HV6675  GEOID HEIGHT    -        -34.682 (meters)                     GEOID18
 HV6675  NAD 83(1991) X  -  1,180,600.241 (meters)                     COMP
 HV6675  NAD 83(1991) Y  - -4,870,996.196 (meters)                     COMP
 HV6675  NAD 83(1991) Z  -  3,931,365.795 (meters)                     COMP
 HV6675  LAPLACE CORR    -         -6.00  (seconds)                    DEFLEC18
 HV6675  HORZ ORDER      -  FIRST
 HV6675  ELLP ORDER      -  FOURTH    CLASS I
 HV6675
 HV6675.The horizontal coordinates were established by classical geodetic methods
 HV6675.and adjusted by the National Geodetic Survey in January 1992.
 HV6675
 HV6675.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV6675.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV6675
 HV6675.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6675.GEOID18 height accuracy estimate available here.
 HV6675
 HV6675.Click photographs - Photos may exist for this station.
 HV6675
 HV6675.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV6675
 HV6675.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6675
 HV6675.The ellipsoidal height was determined by GPS observations
 HV6675.and is referenced to NAD 83.
 HV6675
 HV6675. The following values were computed from the NAD 83(1991) position.
 HV6675
 HV6675;                    North         East     Units Scale Factor Converg.
 HV6675;SPC MD       -    70,177.300   454,606.759   MT  1.00000049   +0 23 30.5
 HV6675;SPC MD       -   230,240.03  1,491,489.01   sFT  1.00000049   +0 23 30.5
 HV6675;UTM  18      - 4,239,684.546   379,698.939   MT  0.99977823   -0 51 09.8
 HV6675
 HV6675!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6675!SPC MD       -   1.00000504  x   1.00000049  =   1.00000553
 HV6675!UTM  18      -   1.00000504  x   0.99977823  =   0.99978327
 HV6675
 HV6675:                Primary Azimuth Mark                     Grid Az
 HV6675:SPC MD       -  JARBOESVILLE CEDAR PT FARM TK            302 44 38.5
 HV6675:UTM  18      -  JARBOESVILLE CEDAR PT FARM TK            303 59 18.8
 HV6675
 HV6675_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7969839684(NAD 83)
 HV6675
 HV6675|---------------------------------------------------------------------|
 HV6675| PID    Reference Object                     Distance      Geod. Az  |
 HV6675|                                                           dddmmss.s |
 HV6675| CX2192 CEDAR POINT 2 RM 1                   23.135 METERS 03307     |
 HV6675| CX2193 CEDAR POINT 2 RM 2                   25.097 METERS 18841     |
 HV6675| CX2194 CEDAR POINT 2 RM 3 AZIMUTH                         2061101.7 |
 HV6675| HV6671 JARBOESVILLE CEDAR PT FARM TK       APPROX. 1.3 KM 3030809.0 |
 HV6675|---------------------------------------------------------------------|
 HV6675
 HV6675                          SUPERSEDED SURVEY CONTROL
 HV6675
 HV6675  NAD 83(1986)-  38 17 49.87251(N)    076 22 32.72658(W) AD(       ) 1
 HV6675  NAD 27      -  38 17 49.43100(N)    076 22 33.90700(W) AD(       ) 1
 HV6675  NGVD 29 (11/20/87)    2.8    (m)  UNKNOWN  model used  GPS OBS        
 HV6675
 HV6675.Superseded values are not recommended for survey control.
 HV6675
 HV6675.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6675.See file dsdata.pdf to determine how the superseded data were derived.
 HV6675
 HV6675_MARKER: DS = TRIANGULATION STATION DISK
 HV6675_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6675_STAMPING: CEDAR POINT 2 1934
 HV6675_MARK LOGO: CGS
 HV6675_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV6675_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6675+STABILITY: SURFACE MOTION
 HV6675_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6675+SATELLITE: SATELLITE OBSERVATIONS - 1986
 HV6675
 HV6675  HISTORY     - Date     Condition        Report By
 HV6675  HISTORY     - 1934     MONUMENTED       CGS
 HV6675  HISTORY     - 1942     GOOD             CGS
 HV6675  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6675  HISTORY     - 1965     GOOD             CGS
 HV6675  HISTORY     - 1986     GOOD             NGS
 HV6675
 HV6675                          STATION DESCRIPTION
 HV6675
 HV6675'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6675'THIS FIRST-ORDER STATION IS 7.5 MILES NE (AIR LINE) OF GREAT MILLS, ON
 HV6675'THE PROPERTY OF J.L. HARGROVE AND KNOWN AS CEDAR POINT FARM, ABOUT 0.6
 HV6675'MILE SE OF A GROUP OF FARM BUILDINGS, NEAR THE SE CORNER OF AN
 HV6675'UNCULTIVATED FIELD, ABOUT 40 YARDS W OF THE EDGE OF THE CHESAPEAKE
 HV6675'BAY, 49.4 FEET NW OF A TWIN CEDAR TREE ON THE EDGE OF A BANK, 22.5
 HV6675'FEET NNW OF A BARBED WIRE FENCE LINE.  THE MARK IS ABOUT 14 INCHES
 HV6675'BELOW THE SURFACE OF THE GROUND.
 HV6675'
 HV6675'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD DISKS SET IN
 HV6675'CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HV6675'
 HV6675'REFERENCE MARK NO.1 IS 39 FEET NE OF A 36-INCH OAK TREE AND 2.5 FEET W
 HV6675'OF A HOLLY TREE WITH A TRIANGULAR BLAZE.  THE MARK PROJECTS ABOUT 6
 HV6675'INCHES ABOVE GROUND.
 HV6675'
 HV6675'REFERENCE MARK NO.2 IS 14.1 FEET W OF A 12-INCH CEDAR TREE, 7 FEET NNW
 HV6675'OF THE EDGE OF A BLUFF, AND 4.5 FEET N OF A CHERRY TREE.  THE MARK
 HV6675'PROJECTS ABOUT 6 INCHES ABOVE GROUND.
 HV6675'
 HV6675'REFERENCE MARK NO.3 (AZIMUTH MARK) IS ABOUT 100 YARDS NW OF THE EDGE
 HV6675'OF BACK WATER, ABOUT 11 PACES SSE OF A 36-INCH CHERRY TREE, AND ABOUT
 HV6675'5 PACES NE OF A 20-INCH CHERRY TREE.  THE MARK PROJECTS ABOUT 6 INCHES
 HV6675'ABOVE GROUND.
 HV6675'
 HV6675'TO REACH THE STATION FROM GREAT MILLS FOLLOW HARD SURFACE ROAD ABOUT 5
 HV6675'MILES NE TO PEARSON CORNER, TURN E THROUGH TOWN ON HARD SURFACE ROAD
 HV6675'FOR ABOUT 2.5 MILES TO THE END OF THE HARD SURFACE ROAD, CONTINUE ON
 HV6675'DIRT ROAD FOR ABOUT 0.4 MILE TO A LARGE STEEL WATER TANK ON THE RIGHT,
 HV6675'TURN RIGHT AROUND THE TANK AND FOLLOW A FARM ROAD FOR ABOUT 0.4 MILE
 HV6675'TO SOME FARM BUILDINGS, PASS BETWEEN THESE BUILDINGS AND GO ABOUT 0.1
 HV6675'MILE TO TWO GATES, GO THROUGH THE LEFT GATE AND FOLLOW THE ROAD ALONG
 HV6675'A FENCE LINE FOR ABOUT 0.4 MILE TO THE EDGE OF SOME BACK WATER, TURN
 HV6675'LEFT AND FOLLOW ABOUT 0.4 MILE TO THE EDGE OF SOME BACK WATER, TURN
 HV6675'LEFT AND FOLLOW A DIM ROAD FOR ABOUT 0.2 MILE TO THE STATION.
 HV6675'
 HV6675'A 103-FOOT TOWER WILL CLEAR ALL LINES OBSERVED.
 HV6675
 HV6675                          STATION RECOVERY (1942)
 HV6675
 HV6675'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6675'STATION AND REFERENCE MARKS WERE RECOVERED AND FOUND IN GOOD
 HV6675'CONDITION.  A COMPLETE NEW DESCRIPTION FOLLOWS--
 HV6675'
 HV6675'THE STATION (NOTES 1B AND 7B) IS LOCATED ON CEDAR POINT, ABOUT
 HV6675'5 MILES BY ROAD NE OF THE SETTLEMENT OF JARBOESVILLE AND ON LAND
 HV6675'FORMERLY OWNED BY THE CEDAR POINT FARM BUT NOW BEING PREPARED FOR
 HV6675'AN AIRFIELD OF THE NAVY.  IT IS 115 FEET S OF THE S BANK OF
 HV6675'CHESAPEAKE BAY, 25 FEET W OF A HEDGE FENCE.  MARK IS STAMPED
 HV6675'CEDAR POINT 2 1934 AND IS 14 INCHES BELOW THE SURFACE OF THE
 HV6675'GROUND.
 HV6675'
 HV6675'REFERENCE MARK NO.1 (NOTE 11A) IS NNE OF THE STATION AND 3 FEET
 HV6675'SW OF A HOLLY TREE.  IT IS STAMPED CEDAR POINT 2 NO.1 1934 AND
 HV6675'PROJECTS 4 INCHES.
 HV6675'
 HV6675'REFERENCE MARK NO.2 (NOTE 11A) IS S OF THE STATION AND 3 FEET
 HV6675'W OF A HEDGE FENCE.  MARK IS STAMPED CEDAR POINT 2 NO.2 1934 AND
 HV6675'PROJECTS 5 INCHES.
 HV6675'
 HV6675'REFERENCE MARK NO.3 (AZIMUTH MARK) (NOTE 11A) IS 0.15 MILE SW OF
 HV6675'THE STATION, ON THE N SIDE OF A HEDGE FENCE, ABOUT 100 YARDS N OF
 HV6675'THE BACK WATER.  MARK IS STAMPED CEDAR POINT 2 NO.3 1934 AND IS
 HV6675'FLUSH WITH THE SURFACE OF THE GROUND.
 HV6675'
 HV6675'TO REACH THE STATION FROM THE PAVED CROSS ROAD IN JARBOESVILLE,
 HV6675'A SMALL SETTLEMENT ON STATE HIGHWAY 235, GO NE ON A PAVED ROAD FOR
 HV6675'1.5 MILES TO PEARSONS CORNER, TURN RIGHT (AT SIGN CEDAR POINT 3
 HV6675'MILES) AND GO 2.5 MILES TO END OF PAVED ROAD AND ENTRANCE TO
 HV6675'CEDAR POINT FARM, CONTINUE STRAIGHT AHEAD FOR 0.5 MILE TO WATER
 HV6675'TANK, TURN RIGHT AND FOLLOW ALONG FENCE FOR 0.3 MILE TO A GATE,
 HV6675'PASS THROUGH GATE AND GO 0.1 MILE TO A GATE, GO THROUGH GATE
 HV6675'FOR 0.1 MILE TO TWO GATES, PASS THROUGH LEFT GATE AND CONTINUE
 HV6675'ON FIELD ROAD FOR 0.4 MILE TO SE CORNER OF FIELD, TURN LEFT
 HV6675'AND FOLLOW EDGE OF FIELD FOR 0.2 MILE TO STATION.
 HV6675'
 HV6675'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION NORRIS.
 HV6675'
 HV6675'A 50-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT STATION BARREDA.
 HV6675'
 HV6675'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION CHASE.
 HV6675'
 HV6675'A 113-FOOT LIGHT AT STATION COLLISON IS VISIBLE FROM THE GROUND.
 HV6675'
 HV6675'A 113-FOOT LIGHT AT STATION CALVERT 1854 IS VISIBLE FROM THE
 HV6675'GROUND.
 HV6675
 HV6675                          STATION RECOVERY (1960)
 HV6675
 HV6675'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6675'DUE TO THE POSITION OF THE STATION IT WAS NOT VISITED.  MR. COLEMAN
 HV6675'OF PUBLIC WORKS, PATUXENT NAVAL AIR TEST CENTER STATED THAT THE
 HV6675'STATION AND ALL REFERENCE MARKS ARE IN GOOD CONDITION.
 HV6675
 HV6675                          STATION RECOVERY (1965)
 HV6675
 HV6675'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HV6675'STATION WAS RECOVERED AS DESCRIBED.  STATION MARK IS PROTECTED BY 6 IN
 HV6675'CONCRETE PIPE MANHOLE AND IS 8-10 IN BELOW GROUND LEVEL.  REFERENCE
 HV6675'MARKS WERE NOT SEARCHED FOR.
 HV6675'
 HV6675'PREVIOUS DESCRIPTION INADEQUATE, NEW DESCRIPTION FOLLOWS--TO REACH
 HV6675'FROM MAIN GATE, PROCEED APPROXIMATELY 7 MILES ALONG CEDAR PT. RD.,
 HV6675'TURN LEFT INTO CEDAR POINT RADAR COMPLEX, PROCEED APPROXIMATELY 100
 HV6675'YDS., TURN LEFT ON DIRT TRAIL.  STATION IS ABOUT 75 YDS. AT END OF END
 HV6675'OF TRAIL ON A SMALL KNOLL.
 HV6675
 HV6675                          STATION RECOVERY (1986)
 HV6675
 HV6675'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (MRM)
 HV6675'THE STATION WAS RECOVERED AT THIS DATE, IN GOOD CONDITION.  REFERENCE
 HV6675'MARKS AND AZIMUTH MARK WERE NOT SEARCHED FOR AT THIS DATE.
 HV6675'
 HV6675'THE STATION IS LOCATED ABOUT 11.1 KM (6.9 MI) EAST OF CALIFORNIA, 7.4
 HV6675'KM (4.6 MI) NORTHEAST OF LEXINGTON PARK AND AT CEDAR POINT.
 HV6675'OWNERSHIP--U.S. GOVERNMENT, PATUXENT NAVAL AIR TEST CENTER MD, FOR
 HV6675'ACCESS CONTACT MIKE SHEEHAN, PHONE 301-863-1183.
 HV6675'
 HV6675'TO REACH THE STATION FROM THE MAIN GATE OF THE PATUXENT NAVAL AIR TEST
 HV6675'CENTER, GO NORTHEAST AND THEN SOUTHEAST FOR 9.7 KM (6.0 MI) ON CEDAR
 HV6675'POINT ROAD TO THE NAVY SHIP GROUND STATION ROTARY WING AIRCRAFT TEST
 HV6675'DIRECTORATE (BUILDING 1406) ON THE LEFT.  TURN LEFT AND GO NORTHEAST
 HV6675'FOR 0.2 KM (0.1 MI) THRU A PAVED PARKING LOT TO A LOCKED GATE.  PASS
 HV6675'THRU GATE AND GO 20 METERS (65.6 FT) TO A DIRT ROAD RIGHT.  TURN RIGHT
 HV6675'AND GO SOUTHEAST FOR 0.2 KM (0.1 MI) TO THE STATION ON THE RIGHT ON A
 HV6675'SMALL KNOLL.
 HV6675'
 HV6675'THE STATION IS A STANDARD CGS DISK STAMPED ---CEDAR POINT 2 1934---,
 HV6675'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER
 HV6675'RECESSED 25 CM BELOW GROUND.  LOCATED 3.51 METERS (11.5 FT) NORTHWEST
 HV6675'FROM THE APPROXIMATE CENTER OF THE DIRT ROAD, 2.90 METERS (9.5 FT)
 HV6675'SOUTH-SOUTHEAST FROM A CHAIN LINK CORNER FENCE POST AND 1.07 METERS
 HV6675'(3.5 FT) NORTHEAST FROM THE SOUTHEAST CORNER OF A TRAILER.
 HV6675'
 HV6675'FAA AIRPORT SURVEYS, MARYLAND, JANUARY-FEBRUARY 1986.
 HV6675'
 HV6675'THIS STATION SUITABLE FOR GPS SURVEYS.
 HV6675'
 HV6675'DESCRIBED BY D.F. CALLAHAN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7214 ***********************************************************************
 HV7214  DESIGNATION -  CEDAR POINT HOUSE WEST CHIMNEY
 HV7214  PID         -  HV7214
 HV7214  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7214  COUNTRY     -  US
 HV7214  USGS QUAD   -  DEALE (2016)
 HV7214
 HV7214                         *CURRENT SURVEY CONTROL
 HV7214  ______________________________________________________________________
 HV7214* NAD 83(1991) POSITION- 38 51 02.98869(N) 076 31 39.31584(W)   ADJUSTED
 HV7214  ______________________________________________________________________
 HV7214  GEOID HEIGHT    -        -33.469 (meters)                     GEOID18
 HV7214  LAPLACE CORR    -         -3.60  (seconds)                    DEFLEC18
 HV7214  HORZ ORDER      -  THIRD
 HV7214
 HV7214.The horizontal coordinates were established by classical geodetic methods
 HV7214.and adjusted by the National Geodetic Survey in January 1992.
 HV7214
 HV7214.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7214.GEOID18 height accuracy estimate available here.
 HV7214
 HV7214.Click photographs - Photos may exist for this station.
 HV7214
 HV7214.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7214
 HV7214. The following values were computed from the NAD 83(1991) position.
 HV7214
 HV7214;                    North         East     Units Scale Factor Converg.
 HV7214;SPC MD       -   131,553.186   441,006.929   MT  0.99994994   +0 17 47.4
 HV7214;SPC MD       -   431,604.08  1,446,870.23   sFT  0.99994994   +0 17 47.4
 HV7214;UTM  18      - 4,301,331.890   367,442.823   MT  0.99981637   -0 57 30.2
 HV7214
 HV7214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6744201331(NAD 83)
 HV7214
 HV7214                          SUPERSEDED SURVEY CONTROL
 HV7214
 HV7214  NAD 83(1986)-  38 51 02.98304(N)    076 31 39.32655(W) AD(       ) 3
 HV7214  NAD 27      -  38 51 02.57600(N)    076 31 40.47600(W) AD(       ) 3
 HV7214
 HV7214.Superseded values are not recommended for survey control.
 HV7214
 HV7214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7214.See file dsdata.pdf to determine how the superseded data were derived.
 HV7214
 HV7214_MARKER: 85 = CHIMNEY
 HV7214
 HV7214  HISTORY     - Date     Condition        Report By
 HV7214  HISTORY     - 1933     FIRST OBSERVED   CGS
 HV7214
 HV7214                          STATION DESCRIPTION
 HV7214
 HV7214'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7214'THE WESTERNMOST CHIMNEY ON THE TWO-STORY HOUSE ON CEDAR POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6661 ***********************************************************************
 HV6661  DESIGNATION -  CEDAR POINT LIGHTHOUSE
 HV6661  PID         -  HV6661
 HV6661  STATE/COUNTY-  MD/ST MARYS
 HV6661  COUNTRY     -  US
 HV6661  USGS QUAD   -  BARREN ISLAND (2016)
 HV6661
 HV6661                         *CURRENT SURVEY CONTROL
 HV6661  ______________________________________________________________________
 HV6661* NAD 83(1991) POSITION- 38 17 57.83887(N) 076 22 03.72590(W)   ADJUSTED
 HV6661* NAVD 88 ORTHO HEIGHT -    10.    (meters)       33.    (feet) SCALED
 HV6661  ______________________________________________________________________
 HV6661  GEOID HEIGHT    -        -34.702 (meters)                     GEOID18
 HV6661  LAPLACE CORR    -         -6.09  (seconds)                    DEFLEC18
 HV6661  HORZ ORDER      -  THIRD
 HV6661
 HV6661.The horizontal coordinates were established by classical geodetic methods
 HV6661.and adjusted by the National Geodetic Survey in January 1992.
 HV6661
 HV6661.The orthometric height was scaled from a topographic map.
 HV6661
 HV6661.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6661.GEOID18 height accuracy estimate available here.
 HV6661
 HV6661.Click photographs - Photos may exist for this station.
 HV6661
 HV6661.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6661
 HV6661. The following values were computed from the NAD 83(1991) position.
 HV6661
 HV6661;                    North         East     Units Scale Factor Converg.
 HV6661;SPC MD       -    70,427.766   455,309.336   MT  1.00000010   +0 23 48.7
 HV6661;SPC MD       -   231,061.76  1,493,794.05   sFT  1.00000010   +0 23 48.7
 HV6661;UTM  18      - 4,239,919.641   380,406.633   MT  0.99977614   -0 50 51.9
 HV6661
 HV6661!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6661!SPC MD       -   1.00000392  x   1.00000010  =   1.00000402
 HV6661!UTM  18      -   1.00000392  x   0.99977614  =   0.99978005
 HV6661
 HV6661:                Primary Azimuth Mark                     Grid Az
 HV6661:SPC MD       -  BARREN 1912                              080 51 38.7
 HV6661:UTM  18      -  BARREN 1912                              082 06 19.3
 HV6661
 HV6661_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8040639919(NAD 83)
 HV6661
 HV6661|---------------------------------------------------------------------|
 HV6661| PID    Reference Object                     Distance      Geod. Az  |
 HV6661|                                                           dddmmss.s |
 HV6661| HV6657 BARREN 1912                         APPROX.10.3 KM 0811527.4 |
 HV6661|---------------------------------------------------------------------|
 HV6661
 HV6661                          SUPERSEDED SURVEY CONTROL
 HV6661
 HV6661  NAD 83(1986)-  38 17 57.83878(N)    076 22 03.74162(W) AD(       ) 3
 HV6661  NAD 27      -  38 17 57.39700(N)    076 22 04.92400(W) AD(       ) 3
 HV6661  USSD        -  38 17 57.76200(N)    076 22 04.67600(W) AD(       ) 3
 HV6661
 HV6661.Superseded values are not recommended for survey control.
 HV6661
 HV6661.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6661.See file dsdata.pdf to determine how the superseded data were derived.
 HV6661
 HV6661_MARKER: 13 = LIGHTHOUSE
 HV6661
 HV6661  HISTORY     - Date     Condition        Report By
 HV6661  HISTORY     - 1897     FIRST OBSERVED   CGS
 HV6661  HISTORY     - 1929     MARK NOT FOUND   CGS
 HV6661  HISTORY     - 1942     POOR             CGS
 HV6661  HISTORY     - 1943     GOOD             CGS
 HV6661  HISTORY     - 1955     POOR             CGS
 HV6661  HISTORY     - 1956     MARK NOT FOUND   CGS
 HV6661  HISTORY     - 1960     POOR             CGS
 HV6661  HISTORY     - 1975     GOOD             NGS
 HV6661
 HV6661                          STATION DESCRIPTION
 HV6661
 HV6661'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (JS)
 HV6661'STATION NOT VISITED BUT USED IN CONNECTION WITH TRIANGULATION
 HV6661'IN TAR BAY.
 HV6661
 HV6661                          STATION RECOVERY (1942)
 HV6661
 HV6661'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6661'THIS STATION IS LOCATED ON A SMALL SANDY ISLAND, DUE E OF CEDAR
 HV6661'POINT PROPER, WHICH IS BULKHEADED AND ON WHICH ARE SEVERAL
 HV6661'OTHER BUILDINGS.
 HV6661'
 HV6661'THE LIGHTHOUSE IS NOT OCCUPIED AND SEEMS IN POOR CONDITION.
 HV6661
 HV6661                          STATION RECOVERY (1943)
 HV6661
 HV6661'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6661'THIS STATION WAS RECOVERED AND WAS FOUND TO BE IN GOOD
 HV6661'CONDITION.  THE RESERVATION IN WHICH THE LIGHTHOUSE IS LOCATED
 HV6661'IS DESERTED AND IN A POOR STATE OF REPAIR, BUT THE BUILDING
 HV6661'IN WHICH THE LIGHT IS HOUSED APPEARS STRONG.
 HV6661'
 HV6661'THIS STATION HAD NOT PREVIOUSLY BEEN DESCRIBED IN
 HV6661'DETAIL.  IT IS IN ST. MARYS COUNTY.
 HV6661
 HV6661                          STATION RECOVERY (1955)
 HV6661
 HV6661'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (JTC)
 HV6661'STATION RECOVERED IN POOR CONDITION AS DESCRIBED BY R.L.S. IN 1943.
 HV6661
 HV6661                          STATION RECOVERY (1956)
 HV6661
 HV6661'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (LWS)
 HV6661'ALTHOUGH THE STATION WAS NOT VISITED, IT WAS USED TO ESTABLISH
 HV6661'A THIRD-ORDER STATION IN A CHECKED THREE-POINT FIX.  APEX OF
 HV6661'THE TOWER ON THE DWELLING WAS OBSERVED ON.  THE LIGHTHOUSE HAS
 HV6661'BEEN ABANDONED, AND THE TOWER IS NOW LISTED AS CEDAR POINT
 HV6661'DAYBEACON IN THE 1955 LIGHT LIST.
 HV6661
 HV6661                          STATION RECOVERY (1960)
 HV6661
 HV6661'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6661'STATION RECOVERED.  THE LIGHTHOUSE IS NOW ABANDONED AND THE
 HV6661'ENTIRE STRUCTURE IS IN POOR CONDITION.
 HV6661
 HV6661                          STATION RECOVERY (1975)
 HV6661
 HV6661'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HV6661'THE STATION WAS NOT VISITED AT THIS DATE, HOWEVER IT WAS
 HV6661'INTERSECTED FROM TRIANGULATION STATION BARREDA 2 1952.  IT APPEARED
 HV6661'TO BE IN FAIR CONDITION.  THE WINDOWS IN THE BUILDING BELOW THE
 HV6661'STATION APPEARED TO BE BROKEN AND SOME WOOD REMOVED.
 HV6661'
 HV6661'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV6661'AT CEDAR POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7400 ***********************************************************************
 HV7400  DESIGNATION -  CEDARVILLE
 HV7400  PID         -  HV7400
 HV7400  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7400  COUNTRY     -  US
 HV7400  USGS QUAD   -  BRANDYWINE (2016)
 HV7400
 HV7400                         *CURRENT SURVEY CONTROL
 HV7400  ______________________________________________________________________
 HV7400* NAD 83(1993) POSITION- 38 39 09.87701(N) 076 48 54.60733(W)   ADJUSTED
 HV7400* NAVD 88 ORTHO HEIGHT -    63.3   (meters)      208.    (feet) VERTCON3
 HV7400  ______________________________________________________________________
 HV7400  GEOID HEIGHT    -        -33.121 (meters)                     GEOID18
 HV7400  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 HV7400  HORZ ORDER      -  FIRST
 HV7400
 HV7400.The horizontal coordinates were established by classical geodetic methods
 HV7400.and adjusted by the National Geodetic Survey in November 1994.
 HV7400
 HV7400.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7400.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7400
 HV7400.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7400.GEOID18 height accuracy estimate available here.
 HV7400
 HV7400.Click photographs - Photos may exist for this station.
 HV7400
 HV7400.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7400
 HV7400. The following values were computed from the NAD 83(1993) position.
 HV7400
 HV7400;                    North         East     Units Scale Factor Converg.
 HV7400;SPC MD       -   109,474.670   416,088.542   MT  0.99995739   +0 06 57.6
 HV7400;SPC MD       -   359,168.15  1,365,117.16   sFT  0.99995739   +0 06 57.6
 HV7400;UTM  18      - 4,279,805.343   342,050.101   MT  0.99990723   -1 08 02.4
 HV7400
 HV7400!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7400!SPC MD       -   0.99999527  x   0.99995739  =   0.99995266
 HV7400!UTM  18      -   0.99999527  x   0.99990723  =   0.99990250
 HV7400
 HV7400:                Primary Azimuth Mark                     Grid Az
 HV7400:SPC MD       -  CEDARVILLE AZ MK                         244 29 36.0
 HV7400:UTM  18      -  CEDARVILLE AZ MK                         245 44 36.0
 HV7400
 HV7400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4205079805(NAD 83)
 HV7400
 HV7400|---------------------------------------------------------------------|
 HV7400| PID    Reference Object                     Distance      Geod. Az  |
 HV7400|                                                           dddmmss.s |
 HV7400| HV7387 CEDARVILLE STATE PARK TANK          APPROX. 0.8 KM 1825212.1 |
 HV7400| CX2196 CEDARVILLE RM 1                      40.453 METERS 23009     |
 HV7400| CX2195 CEDARVILLE AZ MK                                   2443633.6 |
 HV7400| HV7431 WALDORF ST POLICE RAD MAST          APPROX. 5.6 KM 2681902.5 |
 HV7400| HV7394 BRANDYWINE USAF TANK                APPROX. 3.8 KM 3184459.6 |
 HV7400| HV7395 BRANDYWINE STATE FOREST LOT         APPROX. 5.4 KM 3353228.0 |
 HV7400| CX2197 CEDARVILLE RM 2                      33.699 METERS 35418     |
 HV7400|---------------------------------------------------------------------|
 HV7400
 HV7400                          SUPERSEDED SURVEY CONTROL
 HV7400
 HV7400  NAD 83(1991)-  38 39 09.87678(N)    076 48 54.60773(W) AD(       ) 1
 HV7400  NAD 83(1986)-  38 39 09.87527(N)    076 48 54.62286(W) AD(       ) 1
 HV7400  NAD 27      -  38 39 09.45361(N)    076 48 55.73399(W) AD(       ) 1
 HV7400  NGVD 29 (07/19/86)   63.5    (m)          208.     (f) VERT ANG       
 HV7400
 HV7400.Superseded values are not recommended for survey control.
 HV7400
 HV7400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7400.See file dsdata.pdf to determine how the superseded data were derived.
 HV7400
 HV7400_MARKER: DS = TRIANGULATION STATION DISK
 HV7400_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7400_STAMPING: CEDARVILLE 1970
 HV7400_MARK LOGO: CGS
 HV7400_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7400+STABILITY: SURFACE MOTION
 HV7400
 HV7400  HISTORY     - Date     Condition        Report By
 HV7400  HISTORY     - 1970     MONUMENTED       NGS
 HV7400
 HV7400                          STATION DESCRIPTION
 HV7400
 HV7400'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7400'RM 1 TO RM 2 OBSTRUCTED.
 HV7400'
 HV7400'THE STATION IS ABOUT 1.7 MILES SOUTHWEST OF BADEN, 2.5 MILES
 HV7400'SOUTHEAST OF BRANDYWINE AND ON THE CEDARVILLE STATE FOREST PARK,
 HV7400'PROPERTY OF THE MARYLAND STATE FOREST SERVICE.
 HV7400'
 HV7400'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND STATE
 HV7400'HIGHWAY 5 IN T.B., GO SOUTH ON U.S. HIGHWAY 301 FOR 2.1 MILES TO
 HV7400'CEDARVILLE ROAD.  TURN LEFT AND GO EAST ON CEDARVILLE ROAD FOR 0.3
 HV7400'MILE TO A RAILROAD CROSSING.  CONTINUE EAST ON CEDARVILLE ROAD FOR
 HV7400'2.35 MILES TO A SIDE ROAD RIGHT.  CONTINUE EAST ON CEDARVILLE
 HV7400'ROAD FOR 1.1 MILES TO A GRAVELED ROAD ON THE RIGHT, WHICH LEADS
 HV7400'TO THE HEADQUARTERS OF THE CEDARVILLE STATE FOREST PARK.  TURN
 HV7400'RIGHT AND GO SOUTH ON THE GRAVELED ROAD FOR 0.8 MILE TO THE PARK
 HV7400'HEADQUARTERS ON THE LEFT AND THE STATION ON THE LEFT.
 HV7400'
 HV7400'THE STATION MARK IS A STANDARD DISK, STAMPED CEDARVILLE 1970, SET
 HV7400'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV7400'1 INCH BELOW THE GROUND SURFACE.  IT IS 36.0 FEET EAST OF THE
 HV7400'CENTERLINE OF THE GRAVELED ROAD, (FOREST ROAD), AND 21.1 FEET
 HV7400'NORTHWEST OF THE NORTHWEST CORNER OF THE HEADQUARTERS BUILDING.
 HV7400'THE UNDERGROUND MARK IS 42 INCHES BELOW THE GROUND SURFACE.
 HV7400'
 HV7400'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CEDARVILLE NO 1 1970,
 HV7400'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7400'IS 2 INCHES BELOW THE GROUND SURFACE.  IT IS 11.0 FEET WEST OF THE
 HV7400'CENTERLINE OF FOREST ROAD, 91.1 FEET SOUTH OF THE SOUTHEAST CORNER
 HV7400'OF A HOUSE THAT IS DESIGNATED NUMBER 1 RESIDENTS HOUSE, AND ABOUT 2
 HV7400'FEET LOWER IN ELEVATION THAN THE STATION.
 HV7400'
 HV7400'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CEDARVILLE NO 2 1970,
 HV7400'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7400'IS 1 INCH BELOW THE GROUND SURFACE.  IT IS 19.0 FEET WEST OF THE
 HV7400'CENTERLINE OF FOREST ROAD, 91.1 FEET NORTH-NORTHEAST OF THE
 HV7400'NORTHEAST CORNER OF THE NUMBER 1 RESIDENTS HOUSE, AND ABOUT 2
 HV7400'FEET LOWER IN ELEVATION THAN THE STATION.
 HV7400'
 HV7400'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED CEDARVILLE 1970, SET IN
 HV7400'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7400'PROJECTS 2 INCHES ABOVE THE GROUND.  IT IS 258 FEET WEST OF THE
 HV7400'CENTERLINE OF FOREST ROAD AND 1.5 FEET EAST-NORTHEAST OF A WITNESS
 HV7400'POST.  TO REACH THE MARK FROM THE STATION, CONTINUE SOUTH ON
 HV7400'FOREST ROAD FOR 0.2 MILE TO A DEER PEN ON THE RIGHT.  TURN RIGHT
 HV7400'AND GO WEST FOR 258 FEET TO THE MARK IN THE CORNER OF A LAWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7387 ***********************************************************************
 HV7387  DESIGNATION -  CEDARVILLE STATE PARK TANK
 HV7387  PID         -  HV7387
 HV7387  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7387  COUNTRY     -  US
 HV7387  USGS QUAD   -  BRANDYWINE (2016)
 HV7387
 HV7387                         *CURRENT SURVEY CONTROL
 HV7387  ______________________________________________________________________
 HV7387* NAD 83(1993) POSITION- 38 38 44.77709(N) 076 48 56.21189(W)   ADJUSTED
 HV7387  ______________________________________________________________________
 HV7387  GEOID HEIGHT    -        -33.137 (meters)                     GEOID18
 HV7387  LAPLACE CORR    -         -5.39  (seconds)                    DEFLEC18
 HV7387  HORZ ORDER      -  THIRD
 HV7387
 HV7387.The horizontal coordinates were established by classical geodetic methods
 HV7387.and adjusted by the National Geodetic Survey in November 1994.
 HV7387
 HV7387.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7387.GEOID18 height accuracy estimate available here.
 HV7387
 HV7387.Click photographs - Photos may exist for this station.
 HV7387
 HV7387.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7387
 HV7387. The following values were computed from the NAD 83(1993) position.
 HV7387
 HV7387;                    North         East     Units Scale Factor Converg.
 HV7387;SPC MD       -   108,700.651   416,051.308   MT  0.99995786   +0 06 56.6
 HV7387;SPC MD       -   356,628.72  1,364,995.00   sFT  0.99995786   +0 06 56.6
 HV7387;UTM  18      - 4,279,032.359   341,995.995   MT  0.99990744   -1 08 02.7
 HV7387
 HV7387_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4199579032(NAD 83)
 HV7387
 HV7387                          SUPERSEDED SURVEY CONTROL
 HV7387
 HV7387  NAD 83(1991)-  38 38 44.77739(N)    076 48 56.21233(W) AD(       ) 3
 HV7387  NAD 83(1986)-  38 38 44.77573(N)    076 48 56.22746(W) AD(       ) 3
 HV7387  NAD 27      -  38 38 44.35364(N)    076 48 57.33891(W) AD(       ) 3
 HV7387
 HV7387.Superseded values are not recommended for survey control.
 HV7387
 HV7387.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7387.See file dsdata.pdf to determine how the superseded data were derived.
 HV7387
 HV7387_MARKER: 53 = ELEVATED TANK
 HV7387
 HV7387  HISTORY     - Date     Condition        Report By
 HV7387  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7387
 HV7387                          STATION DESCRIPTION
 HV7387
 HV7387'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7387'THE STATION, THE CEDARVILLE STATE PARK WATER TANK, IS THE CENTER
 HV7387'OF THE TOP OF A 150 FOOT TALL, ELEVATED, DOUBLE ELLIPSOIDAL,
 HV7387'WATER TANK, LOCATED 1/2 MILE SOUTH OF THE CEDARVILLE STATE PARK
 HV7387'HEADQUARTERS BUILDING AND OWNED BY THE STATE OF MARYLAND.
 HV7387'
 HV7387'TO REACH THE STATION FROM THE PARK HEADQUARTERS, GO SOUTH ON
 HV7387'FOREST ROAD FOR 0.45 MILE TO A SIDE ROAD LEFT, MEEDAK
 HV7387'ROAD.  CONTINUE SOUTH ON FOREST ROAD FOR 0.05 MILE TO A SIDE ROAD
 HV7387'LEFT.  TURN LEFT AND GO EAST AND SOUTHEAST ON LOOP ROAD FOR 0.1
 HV7387'MILE TO A FORK AND THE STATION ON THE LEFT ABOUT 100 FEET EAST
 HV7387'OF THE ROAD FORK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6965 ***********************************************************************
 HV6965  DESIGNATION -  CEDOAK
 HV6965  PID         -  HV6965
 HV6965  STATE/COUNTY-  MD/ST MARYS
 HV6965  COUNTRY     -  US
 HV6965  USGS QUAD   -  SAINT CLEMENTS ISLAND (2016)
 HV6965
 HV6965                         *CURRENT SURVEY CONTROL
 HV6965  ______________________________________________________________________
 HV6965* NAD 83(1993) POSITION- 38 14 06.72842(N) 076 41 12.85038(W)   ADJUSTED
 HV6965* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6965  ______________________________________________________________________
 HV6965  GEOID HEIGHT    -        -33.838 (meters)                     GEOID18
 HV6965  LAPLACE CORR    -         -4.02  (seconds)                    DEFLEC18
 HV6965  HORZ ORDER      -  THIRD
 HV6965
 HV6965.The horizontal coordinates were established by classical geodetic methods
 HV6965.and adjusted by the National Geodetic Survey in November 1994.
 HV6965
 HV6965.The orthometric height was scaled from a topographic map.
 HV6965
 HV6965.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6965.GEOID18 height accuracy estimate available here.
 HV6965
 HV6965.Click photographs - Photos may exist for this station.
 HV6965
 HV6965.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6965
 HV6965. The following values were computed from the NAD 83(1993) position.
 HV6965
 HV6965;                    North         East     Units Scale Factor Converg.
 HV6965;SPC MD       -    63,157.181   427,412.299   MT  1.00001190   +0 11 47.4
 HV6965;SPC MD       -   207,208.18  1,402,268.52   sFT  1.00001190   +0 11 47.4
 HV6965;SPC VA N     - 2,064,673.609 3,658,723.819   MT  0.99997051   +1 07 53.7
 HV6965;SPC VA N     - 6,773,850.00 12,003,663.06   sFT  0.99997051   +1 07 53.7
 HV6965;UTM  18      - 4,233,257.021   352,363.670   MT  0.99986844   -1 02 39.1
 HV6965
 HV6965!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6965!SPC MD       -   1.00000503  x   1.00001190  =   1.00001693
 HV6965!SPC VA N     -   1.00000503  x   0.99997051  =   0.99997554
 HV6965!UTM  18      -   1.00000503  x   0.99986844  =   0.99987347
 HV6965
 HV6965:                Primary Azimuth Mark                     Grid Az
 HV6965:SPC MD       -  BLAKISTON ISLAND LH 1860                 238 32 38.4
 HV6965:SPC VA N     -  BLAKISTON ISLAND LH 1860                 237 36 32.1
 HV6965:UTM  18      -  BLAKISTON ISLAND LH 1860                 239 47 04.9
 HV6965
 HV6965_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5236333257(NAD 83)
 HV6965
 HV6965|---------------------------------------------------------------------|
 HV6965| PID    Reference Object                     Distance      Geod. Az  |
 HV6965|                                                           dddmmss.s |
 HV6965| CX2198 CEDOAK RM                            21.910 METERS 07641     |
 HV6965| HV6945 BLAKISTON ISLAND LH 1860            APPROX. 5.9 KM 2384425.8 |
 HV6965|---------------------------------------------------------------------|
 HV6965
 HV6965                          SUPERSEDED SURVEY CONTROL
 HV6965
 HV6965  NAD 83(1991)-  38 14 06.72713(N)    076 41 12.85510(W) AD(       ) 3
 HV6965  NAD 83(1986)-  38 14 06.72821(N)    076 41 12.86673(W) AD(       ) 3
 HV6965  NAD 27      -  38 14 06.25400(N)    076 41 13.98300(W) AD(       ) 3
 HV6965  USSD        -  38 14 06.83700(N)    076 41 13.90900(W) AD(       ) 3
 HV6965
 HV6965.Superseded values are not recommended for survey control.
 HV6965
 HV6965.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6965.See file dsdata.pdf to determine how the superseded data were derived.
 HV6965
 HV6965_MARKER: N = NAIL
 HV6965_SETTING: 0 = UNSPECIFIED SETTING
 HV6965
 HV6965  HISTORY     - Date     Condition        Report By
 HV6965  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6965  HISTORY     - 1927     MARK NOT FOUND   CGS
 HV6965  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6965  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6965
 HV6965                          STATION DESCRIPTION
 HV6965
 HV6965'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6965'ON THE EASTERN SHORE OF BRETONS BAY, ABOUT 1/8 MILE N OF HIGGINS
 HV6965'POINT, AND 7/8 MILE E OF KAYWOOD POINT, ABOUT 8 FEET ABOVE HIGH
 HV6965'WATER, 2 YARDS E OF EDGE OF BANK, 11 YARDS NNW OF EDGE OF BANK AT
 HV6965'CEDAR WOODS, 12 YARDS WSW OF AN OAK TREE, 30 YARDS SSE OF SMALL
 HV6965'CLUMP OF CEDAR TREES ON POINT AND 40 YARDS S OF EDGE OF CLEARING.
 HV6965'STATION MARK IS NAIL IN CEDAR STUB PROJECTING ABOUT 1 INCH ABOVE
 HV6965'SURFACE OF GROUND.  REFERENCE MARK IS CENTER OF STANDARD MONUMENT
 HV6965'OF MARYLAND SHELL FISH SURVEY, WHICH IS MADE OF CONCRETE AND IS 2
 HV6965'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP IS
 HV6965'MARKED WITH THE SAME MOLD AND SHOWS A CENTER HOLE SURROUNDED BY A
 HV6965'TRIANGLE, WITH COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE
 HV6965'VERTEX, AND THE LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HV6965'TRIANGLE.  THE CENTER HOLE IS ALWAYS AT THE CENTER OF THE MONUMENT
 HV6965'AND IF THE MARKING HAS BEEN BROKEN OFF WITHOUT DISTURBING THE
 HV6965'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS THE
 HV6965'LOCATION OF THE REFERENCE MARK.  THE MONUMENT IS SET VERTICALLY IN
 HV6965'THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5 INCHES ABOVE THE SURFACE.
 HV6965'
 HV6965'IT IS 21.91 METERS (71.9 FEET) FROM STATION N 76 DEG 41 MIN E
 HV6965'DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV6965'REFERENCE ARE AS FOLLOWS--LEFT CHIMNEY OF COLTONS HOTEL, 3-1/2
 HV6965'MILES, S 76 DEG 3 MIN W.  CHIMNEY OF HOUSE BEYOND EDGE OF WOODS, 1
 HV6965'3/8 MILES, S 87 DEG 37 MIN W.  CHIMNEY ON MIDDLE OF HOUSE, 7/8
 HV6965'MILE, N 66 DEG 58 MIN W.  BETWEEN TWO CHIMNEYS ON RIGHT OF PRIESTS
 HV6965'HOUSE, 1-5/8 MILES, N 26 DEG 27 MIN W.  LEFT PEAK OF ROOF OF
 HV6965'RAILWAY BUILDING, 1-7/8 MILES, N 9 DEG 26 MIN W.  NAIL IN BLAZE IN
 HV6965'13-INCH PINE TREE, 28.08 METERS (92.1 FEET), N 25 DEG 51 MIN E.
 HV6965'NAIL IN BLAZE IN 14-INCH OAK TREE, 10.22 METERS (33.5 FEET), N 58
 HV6965'DEG 19 MIN E.  NAIL IN BLAZE IN 10-INCH CEDAR TREE, 16.19 METERS
 HV6965'(53.1 FEET), S 78 DEG 31 MIN E.  LEFT TREE ON HIGGINS POINT, 1/8
 HV6965'MILE S 10 DEG 16 MIN E.
 HV6965
 HV6965                          STATION RECOVERY (1927)
 HV6965
 HV6965'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1927 (HRE)
 HV6965'STATION ROTTED OUT.  REFERENCE MARK OF MARYLAND SHELL FISH SURVEY
 HV6965'IS IN GOOD CONDITION.
 HV6965
 HV6965                          STATION RECOVERY (1942)
 HV6965
 HV6965'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6965'THE STATION WAS REPORTED ROTTED OUT IN 1927.  A SEARCH WAS MADE
 HV6965'WITHOUT RESULTS FOR THE REFERENCE MARK.  NONE OF THE TREE
 HV6965'REFERENCES COULD BE FOUND, AND THE AREA IS COVERED WITH BRUSH AND
 HV6965'HONEYSUCKLE.  IT IS RECOMMENDED THAT THIS MARK BE CLASSIFIED AS LOST.
 HV6965
 HV6965                          STATION RECOVERY (1958)
 HV6965
 HV6965'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6965'THE STATION IS DESTROYED.  A THOROUGH SEARCH FOR THE R.M. BY THREE
 HV6965'MEN FOR ONE HOUR WAS FRUITLESS.  THE R.M. SHOULD CONTINUE TO BE
 HV6965'LISTED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1497 ***********************************************************************
 JV1497  DESIGNATION -  CEM
 JV1497  PID         -  JV1497
 JV1497  STATE/COUNTY-  MD/BALTIMORE
 JV1497  COUNTRY     -  US
 JV1497  USGS QUAD   -  NEW FREEDOM (2019)
 JV1497
 JV1497                         *CURRENT SURVEY CONTROL
 JV1497  ______________________________________________________________________
 JV1497* NAD 83(1991) POSITION- 39 42 37.44031(N) 076 38 58.93337(W)   ADJUSTED
 JV1497* NAVD 88 ORTHO HEIGHT -   261.031 (meters)      856.40  (feet) ADJUSTED
 JV1497  ______________________________________________________________________
 JV1497  GEOID HEIGHT    -        -32.365 (meters)                     GEOID18
 JV1497  LAPLACE CORR    -         -1.27  (seconds)                    DEFLEC18
 JV1497  DYNAMIC HEIGHT  -        260.901 (meters)      855.97  (feet) COMP
 JV1497  MODELED GRAVITY -    980,121.8   (mgal)                       NAVD 88
 JV1497
 JV1497  HORZ ORDER      -  SECOND
 JV1497  VERT ORDER      -  SECOND    CLASS 0
 JV1497
 JV1497.The horizontal coordinates were established by classical geodetic methods
 JV1497.and adjusted by the National Geodetic Survey in January 1992.
 JV1497
 JV1497.The orthometric height was determined by differential leveling and
 JV1497.adjusted by the NATIONAL GEODETIC SURVEY
 JV1497.in June 1991.
 JV1497
 JV1497.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1497.GEOID18 height accuracy estimate available here.
 JV1497
 JV1497.Click photographs - Photos may exist for this station.
 JV1497
 JV1497.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1497
 JV1497.The dynamic height is computed by dividing the NAVD 88
 JV1497.geopotential number by the normal gravity value computed on the
 JV1497.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1497.degrees latitude (g = 980.6199 gals.).
 JV1497
 JV1497.The modeled gravity was interpolated from observed gravity values.
 JV1497
 JV1497. The following values were computed from the NAD 83(1991) position.
 JV1497
 JV1497;                    North         East     Units Scale Factor Converg.
 JV1497;SPC MD       -   226,933.383   430,040.741   MT  1.00005594   +0 13 11.5
 JV1497;SPC MD       -   744,530.61  1,410,892.00   sFT  1.00005594   +0 13 11.5
 JV1497;SPC PA S     -    42,455.653   694,355.818   MT  1.00004234   +0 42 49.9
 JV1497;SPC PA S     -   139,289.92  2,278,065.71   sFT  1.00004234   +0 42 49.9
 JV1497;UTM  18      - 4,396,916.192   358,585.078   MT  0.99984621   -1 03 15.1
 JV1497
 JV1497!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1497!SPC MD       -   0.99996413  x   1.00005594  =   1.00002007
 JV1497!SPC PA S     -   0.99996413  x   1.00004234  =   1.00000647
 JV1497!UTM  18      -   0.99996413  x   0.99984621  =   0.99981034
 JV1497
 JV1497:                Primary Azimuth Mark                     Grid Az
 JV1497:SPC MD       -  CEM AZ MK                                110 53 01.9
 JV1497:SPC PA S     -  CEM AZ MK                                110 23 23.5
 JV1497:UTM  18      -  CEM AZ MK                                112 09 28.5
 JV1497
 JV1497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5858596916(NAD 83)
 JV1497
 JV1497|---------------------------------------------------------------------|
 JV1497| PID    Reference Object                     Distance      Geod. Az  |
 JV1497|                                                           dddmmss.s |
 JV1497| CB1061 CEM RM 2                             14.285 METERS 04839     |
 JV1497| JV1496 CEM AZ MK                                          1110613.4 |
 JV1497| JV1498 CEM RM 1                             12.540 METERS 31735     |
 JV1497| JV6081 SHREWSBURY CHURCH SPIRE             APPROX. 6.8 KM 3380008.6 |
 JV1497|---------------------------------------------------------------------|
 JV1497
 JV1497                          SUPERSEDED SURVEY CONTROL
 JV1497
 JV1497  NAD 83(1986)-  39 42 37.43251(N)    076 38 58.93577(W) AD(       ) 2
 JV1497  NAD 27      -  39 42 37.05810(N)    076 39 00.04070(W) AD(       ) 2
 JV1497  NGVD 29             261.24   (m)          857.1    (f) LEVELING    3  
 JV1497  NGVD 29 (11/26/84)  261.244  (m)          857.10   (f) ADJUSTED    2 0
 JV1497
 JV1497.Superseded values are not recommended for survey control.
 JV1497
 JV1497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1497.See file dsdata.pdf to determine how the superseded data were derived.
 JV1497
 JV1497_MARKER: DS = TRIANGULATION STATION DISK
 JV1497_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1497_STAMPING: CEM 1959
 JV1497_MARK LOGO: CGS
 JV1497_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1497+STABILITY: SURFACE MOTION
 JV1497
 JV1497  HISTORY     - Date     Condition        Report By
 JV1497  HISTORY     - 1959     MONUMENTED       CGS
 JV1497  HISTORY     - 1959     GOOD             CGS
 JV1497  HISTORY     - 1962     GOOD             MDBCSM
 JV1497
 JV1497                          STATION DESCRIPTION
 JV1497
 JV1497'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV1497'STATION IS LOCATED ABOUT 3/4 MILE SOUTH OF THE MARYLAND-PENNSYLVANIA
 JV1497'STATE LINE, ALONG THE WEST SIDE OF OLD YORK ROAD ABOUT 4-1/2
 JV1497'MILES NORTH OF THE VILLAGE OF PARKTON.  STATION, A STANDARD DISK
 JV1497'SET IN A 12X12 INCH CONCRETE MONUMENT AND STAMPED CEM 1959 IS
 JV1497'28-1/2 FEET SOUTHWEST OF APPROXIMATE CENTERLINE OF OLD YORK
 JV1497'ROAD, 9.8 FEET EAST OF A SMALL CUT EMBANKMENT AND 3.8 FEET EAST
 JV1497'OF WITNESS MARKER.  THE MARK PROJECTS 2 INCHES.
 JV1497'
 JV1497'TO REACH FROM THE MARYLAND-PENNSYLVANIA STATE LINE, GO
 JV1497'SOUTHERLY ON OLD U.S. HIGHWAY NO. 111 FOR 0.75 MILE TO SIDE ROAD
 JV1497'LEFT (OLD YORK ROAD).  TURN LEFT AND GO SOUTHEAST ON OLD YORK
 JV1497'ROAD FOR 0.1 MILE TO STATION ON RIGHT (WEST) SIDE OF ROAD AS
 JV1497'DESCRIBED.  CONTINUE SOUTHERLY ON OLD YORK ROAD FOR 0.15 MILE TO
 JV1497'SIDE ROAD LEFT.  TURN LEFT AND GO EAST ON DEAD END ROAD FOR 0.05
 JV1497'MILE TO END OF ROAD AT BARRICADE AND AZIMUTH MARK AS DESCRIBED.
 JV1497'
 JV1497'REFERENCE MARK NO. 1, A STANDARD DISK SET IN A 12X12 INCH CONCRETE
 JV1497'MONUMENT AND STAMPED CEM NO 1 1959 IS 22 FEET SOUTHWEST OF
 JV1497'APPROXIMATE CENTERLINE OF OLD YORK ROAD, 53 FEET WEST OF
 JV1497'POWERLINE POLE AND 19 FEET NORTHEAST OF EDGE OF EMBANKMENT.  THE
 JV1497'MARK IS FLUSH WITH THE GROUND.
 JV1497'
 JV1497'REFERENCE MARK NO. 2, A STANDARD DISK SET IN A 12X12 INCH
 JV1497'CONCRETE MONUMENT AND STAMPED CEM NO 2 1959 IS 18 FEET EAST OF
 JV1497'APPROXIMATE CENTERLINE OF OLD YORK ROAD AND 81 FEET SOUTHEAST OF
 JV1497'POWERLINE POLE.  THE MARK IS SET FLUSH WITH THE GROUND.
 JV1497'
 JV1497'AZIMUTH MARK, A STANDARD DISK SET IN A 12X12 INCH CONCRETE
 JV1497'MONUMENT AND STAMPED CEM 1959 IS 44 FEET SOUTHWEST OF EDGE
 JV1497'OF EMBANKMENT 3-1/2 FEET SOUTHEAST OF GUARDRAIL AND 3-1/2
 JV1497'FEET EAST OF WITNESS POST.  THE MARK PROJECTS 2 INCHES.
 JV1497'
 JV1497'DISTANCE FROM R.M. NO. 1 TO R.M. NO. 2 IS 62.98 FEET OR
 JV1497'19.194 METERS.
 JV1497'
 JV1497'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV1497
 JV1497                          STATION RECOVERY (1959)
 JV1497
 JV1497'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV1497'0.6 MI S FROM MARYLAND LINE.
 JV1497'0.5 MILE SOUTH ALONG OLD U.S. HIGHWAY 111 FROM THE FIRE STATION
 JV1497'AT MARYLAND LINE, THENCE 0.1 MILE SOUTHEAST ALONG OLD YORK ROAD,
 JV1497'NEAR THE SOUTHEAST CORNER OF A LARGE CEMETERY, 28 FEET SOUTHWEST
 JV1497'OF THE CENTER LINE OF THE ROAD, ABOUT 100 FEET EAST OF THE
 JV1497'EAST SIDE OF A LARGE BRICK HOUSE, 4 FEET EAST OF A METAL WITNESS
 JV1497'POST, SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES
 JV1497'ABOVE THE GROUND AND ABOUT 2 FEET ABOVE THE LEVEL OF THE ROAD.
 JV1497
 JV1497                          STATION RECOVERY (1962)
 JV1497
 JV1497'RECOVERY NOTE BY MD BUR SURV AND MAPS 1962
 JV1497'STATION AND AZIMUTH MARK FOUND IN VERY GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1496 ***********************************************************************
 JV1496  DESIGNATION -  CEM AZ MK
 JV1496  PID         -  JV1496
 JV1496  STATE/COUNTY-  MD/BALTIMORE
 JV1496  COUNTRY     -  US
 JV1496  USGS QUAD   -  NEW FREEDOM (2019)
 JV1496
 JV1496                         *CURRENT SURVEY CONTROL
 JV1496  ______________________________________________________________________
 JV1496* NAD 83(1986) POSITION- 39 42 34.     (N) 076 38 49.     (W)   SCALED
 JV1496* NAVD 88 ORTHO HEIGHT -   250.212 (meters)      820.90  (feet) ADJUSTED
 JV1496  ______________________________________________________________________
 JV1496  GEOID HEIGHT    -        -32.365 (meters)                     GEOID18
 JV1496  DYNAMIC HEIGHT  -        250.087 (meters)      820.49  (feet) COMP
 JV1496  MODELED GRAVITY -    980,122.5   (mgal)                       NAVD 88
 JV1496
 JV1496  VERT ORDER      -  SECOND    CLASS 0
 JV1496
 JV1496.The horizontal coordinates were scaled from a map and have
 JV1496.an estimated accuracy of +/- 6 seconds.
 JV1496
 JV1496.The orthometric height was determined by differential leveling and
 JV1496.adjusted by the NATIONAL GEODETIC SURVEY
 JV1496.in June 1991.
 JV1496
 JV1496.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1496.GEOID18 height accuracy estimate available here.
 JV1496
 JV1496.Click photographs - Photos may exist for this station.
 JV1496
 JV1496.The dynamic height is computed by dividing the NAVD 88
 JV1496.geopotential number by the normal gravity value computed on the
 JV1496.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1496.degrees latitude (g = 980.6199 gals.).
 JV1496
 JV1496.The modeled gravity was interpolated from observed gravity values.
 JV1496
 JV1496;                    North         East    Units  Estimated Accuracy
 JV1496;SPC MD       -   226,830.      430,280.      MT  (+/- 180 meters Scaled)
 JV1496
 JV1496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ588968(NAD 83)
 JV1496
 JV1496                          SUPERSEDED SURVEY CONTROL
 JV1496
 JV1496  NGVD 29 (11/26/84)  250.425  (m)          821.60   (f) ADJUSTED    2 0
 JV1496
 JV1496.Superseded values are not recommended for survey control.
 JV1496
 JV1496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1496.See file dsdata.pdf to determine how the superseded data were derived.
 JV1496
 JV1496_MARKER: DZ = AZIMUTH MARK DISK
 JV1496_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1496_STAMPING: CEM 1959
 JV1496_MARK LOGO: CGS
 JV1496_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1496+STABILITY: SURFACE MOTION
 JV1496
 JV1496  HISTORY     - Date     Condition        Report By
 JV1496  HISTORY     - 1959     MONUMENTED       CGS
 JV1496  HISTORY     - 19961004 MARK NOT FOUND   USPSQD
 JV1496
 JV1496                          STATION DESCRIPTION
 JV1496
 JV1496'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1496'0.8 MI S FROM MARYLAND LINE.
 JV1496'0.5 MILE SOUTH ALONG OLD U.S. HIGHWAY 111 FROM THE FIRE STATION
 JV1496'AT MARYLAND LINE, THENCE 0.3 MILE SOUTHEAST ALONG OLD YORK ROAD,
 JV1496'ABOUT 175 FEET EAST OF OLD YORK ROAD, ABOUT 75 FEET WEST OF THE
 JV1496'CENTER LINE OF THE SOUTH BOUND LANE OF THE NEW U.S. HIGHWAY 111,
 JV1496'44 FEET SOUTHWEST OF THE EDGE OF AN EMBANKMENT, 3 1/2 FEET EAST
 JV1496'OF A STEEL GUARDRAIL AT THE END OF A FARM ROAD, 3 FEET EAST OF
 JV1496'A METAL WITNESS POST AND SET IN THE TOP OF A CONCRETE POST
 JV1496'PROJECTING 4 INCHES ABOVE THE GROUND AND ABOUT 20 FEET ABOVE
 JV1496'THE LEVEL OF THE NEW HIGHWAY.
 JV1496
 JV1496                          STATION RECOVERY (1996)
 JV1496
 JV1496'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV1496'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1498 ***********************************************************************
 JV1498  DESIGNATION -  CEM RM 1
 JV1498  PID         -  JV1498
 JV1498  STATE/COUNTY-  MD/BALTIMORE
 JV1498  COUNTRY     -  US
 JV1498  USGS QUAD   -  NEW FREEDOM (2019)
 JV1498
 JV1498                         *CURRENT SURVEY CONTROL
 JV1498  ______________________________________________________________________
 JV1498* NAD 83(1986) POSITION- 39 42 37.74   (N) 076 38 59.29   (W)   HD_HELD1
 JV1498* NAVD 88 ORTHO HEIGHT -   261.339 (meters)      857.41  (feet) ADJUSTED
 JV1498  ______________________________________________________________________
 JV1498  GEOID HEIGHT    -        -32.365 (meters)                     GEOID18
 JV1498  DYNAMIC HEIGHT  -        261.209 (meters)      856.98  (feet) COMP
 JV1498  MODELED GRAVITY -    980,121.8   (mgal)                       NAVD 88
 JV1498
 JV1498  VERT ORDER      -  SECOND    CLASS 0
 JV1498
 JV1498.The horizontal coordinates were determined by differentially corrected
 JV1498.hand held GPS observations or other comparable positioning techniques
 JV1498.and have an estimated accuracy of +/- 3 meters.
 JV1498
 JV1498.The orthometric height was determined by differential leveling and
 JV1498.adjusted by the NATIONAL GEODETIC SURVEY
 JV1498.in June 1991.
 JV1498
 JV1498.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1498.GEOID18 height accuracy estimate available here.
 JV1498
 JV1498.Click photographs - Photos may exist for this station.
 JV1498
 JV1498.The dynamic height is computed by dividing the NAVD 88
 JV1498.geopotential number by the normal gravity value computed on the
 JV1498.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1498.degrees latitude (g = 980.6199 gals.).
 JV1498
 JV1498.The modeled gravity was interpolated from observed gravity values.
 JV1498
 JV1498;                    North         East    Units  Estimated Accuracy
 JV1498;SPC MD       -   226,942.6     430,032.2     MT  (+/- 3 meters HH1 GPS) 
 JV1498
 JV1498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5857696925(NAD 83)
 JV1498
 JV1498                          SUPERSEDED SURVEY CONTROL
 JV1498
 JV1498  NGVD 29 (11/26/84)  261.552  (m)          858.11   (f) ADJUSTED    2 0
 JV1498
 JV1498.Superseded values are not recommended for survey control.
 JV1498
 JV1498.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1498.See file dsdata.pdf to determine how the superseded data were derived.
 JV1498
 JV1498_MARKER: DR = REFERENCE MARK DISK
 JV1498_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1498_STAMPING: CEM NO 1 1959
 JV1498_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1498+STABILITY: SURFACE MOTION
 JV1498
 JV1498  HISTORY     - Date     Condition        Report By
 JV1498  HISTORY     - 1959     MONUMENTED       CGS
 JV1498
 JV1498                          STATION DESCRIPTION
 JV1498
 JV1498'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1498'0.6 MI S FROM MARYLAND LINE.
 JV1498'0.5 MILE SOUTH ALONG OLD U.S. HIGHWAY 111 FROM THE FIRE STATION
 JV1498'AT MARYLAND LINE, THENCE 0.1 MILE SOUTHEAST ALONG OLD YORK ROAD,
 JV1498'NEAR THE SOUTHEAST CORNER OF A LARGE CEMETERY, 41.1 FEET
 JV1498'NORTHWEST OF THE STATION, 22 FEET SOUTHWEST OF THE CENTER LINE
 JV1498'OF THE ROAD, 53 FEET WEST AND ACROSS THE ROAD FROM A POWER LINE
 JV1498'POLE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND
 JV1498'AND ABOUT 2 FEET ABOVE THE LEVEL OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7652 ***********************************************************************
 DG7652  DESIGNATION -  CEMETERY
 DG7652  PID         -  DG7652
 DG7652  STATE/COUNTY-  MD/CAROLINE
 DG7652  COUNTRY     -  US
 DG7652  USGS QUAD   -  DENTON (2017)
 DG7652
 DG7652                         *CURRENT SURVEY CONTROL
 DG7652  ______________________________________________________________________
 DG7652* NAD 83(2011) POSITION- 38 58 08.51866(N) 075 48 34.49591(W)   ADJUSTED
 DG7652* NAD 83(2011) ELLIP HT-   -24.930 (meters)        (12/21/23)   ADJUSTED
 DG7652* NAD 83(2011) EPOCH   -  2010.00
 DG7652* NAVD 88 ORTHO HEIGHT -     9.711 (meters)       31.86  (feet) ADJUSTED
 DG7652  ______________________________________________________________________
 DG7652  GEOID HEIGHT    -        -34.628 (meters)                     GEOID18
 DG7652  NAD 83(2011) X  -  1,217,261.568 (meters)                     COMP
 DG7652  NAD 83(2011) Y  - -4,813,956.142 (meters)                     COMP
 DG7652  NAD 83(2011) Z  -  3,989,629.078 (meters)                     COMP
 DG7652  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 DG7652  DYNAMIC HEIGHT  -          9.706 (meters)       31.84  (feet) COMP
 DG7652  MODELED GRAVITY -    980,055.0   (mgal)                       NAVD 88
 DG7652
 DG7652  VERT ORDER      -  SECOND    CLASS I
 DG7652
 DG7652  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DG7652  Standards:
 DG7652         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DG7652            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DG7652  -------------------------------------------------------------------
 DG7652  NETWORK    0.84   1.80           0.38   0.30   0.92     -0.03518634
 DG7652  -------------------------------------------------------------------
 DG7652  Click here for local accuracies and other accuracy information.
 DG7652
 DG7652.The horizontal coordinates were established by GPS observations
 DG7652.and adjusted by the MD DOT HIGHWAY ADMIN in December 2023.
 DG7652
 DG7652.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DG7652.been affixed to the stable North American tectonic plate. See 
 DG7652.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DG7652
 DG7652.The horizontal coordinates are valid at the epoch date displayed above
 DG7652.which is a decimal equivalence of Year/Month/Day.
 DG7652
 DG7652.The orthometric height was determined by differential leveling and
 DG7652.adjusted by the NATIONAL GEODETIC SURVEY
 DG7652.in December 2004.
 DG7652
 DG7652.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7652.GEOID18 height accuracy estimate available here.
 DG7652
 DG7652.Click photographs - Photos may exist for this station.
 DG7652
 DG7652.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DG7652
 DG7652.The Laplace correction was computed from DEFLEC18 derived deflections.
 DG7652
 DG7652.The ellipsoidal height was determined by GPS observations
 DG7652.and is referenced to NAD 83.
 DG7652
 DG7652.The dynamic height is computed by dividing the NAVD 88
 DG7652.geopotential number by the normal gravity value computed on the
 DG7652.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7652.degrees latitude (g = 980.6199 gals.).
 DG7652
 DG7652.The modeled gravity was interpolated from observed gravity values.
 DG7652
 DG7652. The following values were computed from the NAD 83(2011) position.
 DG7652
 DG7652;                    North         East     Units Scale Factor Converg.
 DG7652;SPC MD       -   145,241.175   503,158.587   MT  0.99995117   +0 44 49.7
 DG7652;SPC MD       -   476,512.09  1,650,779.46   sFT  0.99995117   +0 44 49.7
 DG7652;UTM  18      - 4,313,651.774   429,865.817   MT  0.99966057   -0 30 33.0
 DG7652
 DG7652!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DG7652!SPC MD       -   1.00000391  x   0.99995117  =   0.99995508
 DG7652!UTM  18      -   1.00000391  x   0.99966057  =   0.99966448
 DG7652
 DG7652_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2986513651(NAD 83)
 DG7652
 DG7652                          SUPERSEDED SURVEY CONTROL
 DG7652
 DG7652.No superseded survey control is available for this station.
 DG7652
 DG7652_MARKER: DD = SURVEY DISK
 DG7652_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7652_STAMPING: CEMETERY 1992
 DG7652_MARK LOGO: MDSHA
 DG7652_PROJECTION: RECESSED 24 CENTIMETERS
 DG7652_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7652_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7652+STABILITY: SURFACE MOTION
 DG7652_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7652+SATELLITE: SATELLITE OBSERVATIONS - August 02, 2023
 DG7652
 DG7652  HISTORY     - Date     Condition        Report By
 DG7652  HISTORY     - 1992     MONUMENTED       MDSHA
 DG7652  HISTORY     - 20021001 GOOD             MDSHA
 DG7652  HISTORY     - 20061207 GOOD             USPSQD
 DG7652  HISTORY     - 20230802 GOOD             MDSHA
 DG7652
 DG7652                          STATION DESCRIPTION
 DG7652
 DG7652'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7652'THE STATION IS LOCATED IN THE TOWN OF GREENSBORO.  TO REACH THE
 DG7652'STATION FROM THE INTERSECTION OF STATE HIGHWAY 480 AND STATE HIGHWAY
 DG7652'314 IN GREENSBORO, GO SOUTHWEST ALONG STATE HIGHWAY 480 FOR 0.45 MI
 DG7652'(0.72 KM) TO A CEMETERY ON THE RIGHT AND THE STATION ON THE LEFT. THE
 DG7652'STATION IS A MARYLAND STATE SURVEY DISK SET IN THE TOP OF A 12 INCH
 DG7652'(30 CM) ROUND CONCRETE MONUMENT WHICH IS ABOUT 1 FOOT BELOW THE LEVEL
 DG7652'OF THE GROUND.  IT IS 19.3 FT (5.9 M) SOUTHEAST OF THE CENTER LINE OF
 DG7652'THE HIGHWAY, 11.5 FT (3.5 M) SOUTHWEST OF THE CENTER OF A DIRT
 DG7652'DRIVEWAY, 102.0 FT (31.1 M) SOUTHWEST OF POWER POLE NUMBER
 DG7652'41028-15172, 68.5 FT (20.9 M) SOUTH AND ACROSS THE HIGHWAY FROM THE
 DG7652'GLADYS M (0.0 FT) WRIGHT HEADSTONE, 56.5 FT (17.2 M) EAST AND ACROSS
 DG7652'THE HIGHWAY FROM THE SOUTHWEST END OF A PLASTIC POST AND RAIL FENCE.
 DG7652
 DG7652                          STATION RECOVERY (2006)
 DG7652
 DG7652'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 DG7652'REFERENCED CEMETARY IS GREENSBORO CEMETARY.  MARK IS ABOUT 10 INCHES
 DG7652'BELOW GROUND LEVEL.
 DG7652
 DG7652                          STATION RECOVERY (2023)
 DG7652
 DG7652'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG7652'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7651 ***********************************************************************
 DG7651  DESIGNATION -  CEMETERY AZ MK
 DG7651  PID         -  DG7651
 DG7651  STATE/COUNTY-  MD/CAROLINE
 DG7651  COUNTRY     -  US
 DG7651  USGS QUAD   -  DENTON (2017)
 DG7651
 DG7651                         *CURRENT SURVEY CONTROL
 DG7651  ______________________________________________________________________
 DG7651* NAD 83(2011) POSITION- 38 57 57.24635(N) 075 48 47.54314(W)   ADJUSTED
 DG7651* NAD 83(2011) ELLIP HT-   -23.654 (meters)        (12/21/23)   ADJUSTED
 DG7651* NAD 83(2011) EPOCH   -  2010.00
 DG7651* NAVD 88 ORTHO HEIGHT -    11.002 (meters)       36.10  (feet) ADJUSTED
 DG7651  ______________________________________________________________________
 DG7651  GEOID HEIGHT    -        -34.633 (meters)                     GEOID18
 DG7651  NAD 83(2011) X  -  1,217,010.880 (meters)                     COMP
 DG7651  NAD 83(2011) Y  - -4,814,246.028 (meters)                     COMP
 DG7651  NAD 83(2011) Z  -  3,989,359.614 (meters)                     COMP
 DG7651  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 DG7651  DYNAMIC HEIGHT  -         10.996 (meters)       36.08  (feet) COMP
 DG7651  MODELED GRAVITY -    980,054.5   (mgal)                       NAVD 88
 DG7651
 DG7651  VERT ORDER      -  SECOND    CLASS I
 DG7651
 DG7651  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DG7651  Standards:
 DG7651         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DG7651            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DG7651  -------------------------------------------------------------------
 DG7651  NETWORK    0.86   1.92           0.39   0.30   0.98     -0.02627576
 DG7651  -------------------------------------------------------------------
 DG7651  Click here for local accuracies and other accuracy information.
 DG7651
 DG7651.The horizontal coordinates were established by GPS observations
 DG7651.and adjusted by the MD DOT HIGHWAY ADMIN in December 2023.
 DG7651
 DG7651.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DG7651.been affixed to the stable North American tectonic plate. See 
 DG7651.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DG7651
 DG7651.The horizontal coordinates are valid at the epoch date displayed above
 DG7651.which is a decimal equivalence of Year/Month/Day.
 DG7651
 DG7651.The orthometric height was determined by differential leveling and
 DG7651.adjusted by the NATIONAL GEODETIC SURVEY
 DG7651.in December 2004.
 DG7651
 DG7651.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7651.GEOID18 height accuracy estimate available here.
 DG7651
 DG7651.Click photographs - Photos may exist for this station.
 DG7651
 DG7651.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DG7651
 DG7651.The Laplace correction was computed from DEFLEC18 derived deflections.
 DG7651
 DG7651.The ellipsoidal height was determined by GPS observations
 DG7651.and is referenced to NAD 83.
 DG7651
 DG7651.The dynamic height is computed by dividing the NAVD 88
 DG7651.geopotential number by the normal gravity value computed on the
 DG7651.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7651.degrees latitude (g = 980.6199 gals.).
 DG7651
 DG7651.The modeled gravity was interpolated from observed gravity values.
 DG7651
 DG7651. The following values were computed from the NAD 83(2011) position.
 DG7651
 DG7651;                    North         East     Units Scale Factor Converg.
 DG7651;SPC MD       -   144,889.523   502,849.057   MT  0.99995108   +0 44 41.5
 DG7651;SPC MD       -   475,358.38  1,649,763.95   sFT  0.99995108   +0 44 41.5
 DG7651;UTM  18      - 4,313,307.093   429,548.744   MT  0.99966112   -0 30 41.1
 DG7651
 DG7651!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DG7651!SPC MD       -   1.00000371  x   0.99995108  =   0.99995479
 DG7651!UTM  18      -   1.00000371  x   0.99966112  =   0.99966483
 DG7651
 DG7651_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2954813307(NAD 83)
 DG7651
 DG7651                          SUPERSEDED SURVEY CONTROL
 DG7651
 DG7651.No superseded survey control is available for this station.
 DG7651
 DG7651_MARKER: DD = SURVEY DISK
 DG7651_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7651_STAMPING: CEMETERY AZ 2002
 DG7651_MARK LOGO: MDSHA
 DG7651_PROJECTION: FLUSH
 DG7651_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7651+STABILITY: SURFACE MOTION
 DG7651_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7651+SATELLITE: SATELLITE OBSERVATIONS - August 02, 2023
 DG7651
 DG7651  HISTORY     - Date     Condition        Report By
 DG7651  HISTORY     - 2002     MONUMENTED       MDSHA
 DG7651  HISTORY     - 20061207 GOOD             USPSQD
 DG7651  HISTORY     - 20111005 GOOD             NGS
 DG7651  HISTORY     - 20210312 GOOD             USPSQD
 DG7651  HISTORY     - 20230802 GOOD             MDSHA
 DG7651
 DG7651                          STATION DESCRIPTION
 DG7651
 DG7651'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7651'THE STATION IS LOCATED ABOUT 1.0 MI (1.61 KM) SOUTHWEST OF GREENSBORO.
 DG7651'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 480 AND
 DG7651'STATE HIGHWAY 314 IN GREENSBORO, GO SOUTHWEST ALONG STATE HIGHWAY 480
 DG7651'FOR 0.7 MI (1.13 KM) TO THE SOUTH CORNER OF LAWN TO HOUSE NUMBER 13070
 DG7651'AND THE STATION ON THE RIGHT.  THE STATION IS A MARYLAND STATE SURVEY
 DG7651'DISK SET IN THE TOP OF A 12 INCH (30 CM) ROUND CONCRTE MONUMENT WHICH
 DG7651'IS FLUSH WITH THE GROUND.  IT IS 24.7 FT (7.5 M) NORTHWEST OF THE
 DG7651'CENTER LINE OF THE HIGHWAY, 66.8 FT (20.4 M) SOUTHWEST OF TELEPHONE
 DG7651'POLE NUMBER 110, 71.7 FT (21.9 M) SOUTHWEST AND ACROSS THE HIGHWAY
 DG7651'FROM POWER POLE NUMBER 40923-15051, 16.1 FT (4.9 M) SOUTHWEST OF THE
 DG7651'SOUTHWEST CORNER OF A METAL DROP INLET GRATE AND 1.3 FT (0.4 M)
 DG7651'SOUTHEAST OF A CARSONITE WITNESS POST.
 DG7651
 DG7651                          STATION RECOVERY (2006)
 DG7651
 DG7651'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 DG7651'RECOVERED IN GOOD CONDITION.
 DG7651
 DG7651                          STATION RECOVERY (2011)
 DG7651
 DG7651'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 DG7651'RECOVERED IN GOOD CONDITION.
 DG7651
 DG7651                          STATION RECOVERY (2021)
 DG7651
 DG7651'RECOVERY NOTE BY US POWER SQUADRON 2021 (DLT)
 DG7651'RECOVERED IN GOOD CONDITION.
 DG7651
 DG7651                          STATION RECOVERY (2023)
 DG7651
 DG7651'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG7651'RECOVERED IN GOOD CONDITION. POWER POLE NUMBER IS NOW 40935-15066.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4580 ***********************************************************************
 JV4580  DESIGNATION -  CENTER
 JV4580  PID         -  JV4580
 JV4580  STATE/COUNTY-  MD/FREDERICK
 JV4580  COUNTRY     -  US
 JV4580  USGS QUAD   -  URBANA (2016)
 JV4580
 JV4580                         *CURRENT SURVEY CONTROL
 JV4580  ______________________________________________________________________
 JV4580* NAD 83(1993) POSITION- 39 19 53.17555(N) 077 19 11.85913(W)   ADJUSTED
 JV4580* NAVD 88 ORTHO HEIGHT -   187.    (meters)      614.    (feet) SCALED
 JV4580  ______________________________________________________________________
 JV4580  GEOID HEIGHT    -        -32.256 (meters)                     GEOID18
 JV4580  LAPLACE CORR    -          6.14  (seconds)                    DEFLEC18
 JV4580  HORZ ORDER      -  SECOND
 JV4580
 JV4580.The horizontal coordinates were established by classical geodetic methods
 JV4580.and adjusted by the National Geodetic Survey in November 1994.
 JV4580
 JV4580.The orthometric height was scaled from a topographic map.
 JV4580
 JV4580.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4580.GEOID18 height accuracy estimate available here.
 JV4580
 JV4580.Click photographs - Photos may exist for this station.
 JV4580
 JV4580.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4580
 JV4580. The following values were computed from the NAD 83(1993) position.
 JV4580
 JV4580;                    North         East     Units Scale Factor Converg.
 JV4580;SPC MD       -   184,848.988   372,413.284   MT  0.99998141   -0 12 02.9
 JV4580;SPC MD       -   606,458.72  1,221,825.92   sFT  0.99998141   -0 12 02.9
 JV4580;UTM  18      - 4,356,124.223   300,040.248   MT  1.00009233   -1 28 15.2
 JV4580
 JV4580!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4580!SPC MD       -   0.99997576  x   0.99998141  =   0.99995717
 JV4580!UTM  18      -   0.99997576  x   1.00009233  =   1.00006808
 JV4580
 JV4580:                Primary Azimuth Mark                     Grid Az
 JV4580:SPC MD       -  CENTER AZ MK RESET                       003 44 52.4
 JV4580:UTM  18      -  CENTER AZ MK RESET                       005 01 04.7
 JV4580
 JV4580_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0004056124(NAD 83)
 JV4580
 JV4580|---------------------------------------------------------------------|
 JV4580| PID    Reference Object                     Distance      Geod. Az  |
 JV4580|                                                           dddmmss.s |
 JV4580| CK6792 CENTER AZ MK RESET                                 0033249.5 |
 JV4580| CK6791 CENTER AZ MK                                       0044835.0 |
 JV4580| CK6793 CENTER RM 1                          20.492 METERS 03755     |
 JV4580| JV4211 RIDGEVILLE ARMY MICROWAVE TWR       APPROX.12.9 KM 0821859.9 |
 JV4580| CK6794 CENTER RM 2                          18.082 METERS 26426     |
 JV4580|---------------------------------------------------------------------|
 JV4580
 JV4580                          SUPERSEDED SURVEY CONTROL
 JV4580
 JV4580  NAD 83(1991)-  39 19 53.17488(N)    077 19 11.85922(W) AD(       ) 2
 JV4580  NAD 83(1986)-  39 19 53.17498(N)    077 19 11.86942(W) AD(       ) 2
 JV4580  NAD 27      -  39 19 52.79889(N)    077 19 12.92125(W) AD(       ) 2
 JV4580
 JV4580.Superseded values are not recommended for survey control.
 JV4580
 JV4580.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4580.See file dsdata.pdf to determine how the superseded data were derived.
 JV4580
 JV4580_MARKER: DS = TRIANGULATION STATION DISK
 JV4580_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4580_STAMPING: CENTER 1943
 JV4580_MARK LOGO: CGS
 JV4580_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4580+STABILITY: SURFACE MOTION
 JV4580
 JV4580  HISTORY     - Date     Condition        Report By
 JV4580  HISTORY     - 1943     MONUMENTED       CGS
 JV4580  HISTORY     - 1958     GOOD             CGS
 JV4580
 JV4580                          STATION DESCRIPTION
 JV4580
 JV4580'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4580'THE STATION IS LOCATED ON A HIGH TIMBERED HILL ABOUT 2 MILES E
 JV4580'OF URBANA ON LAND OWNED BY MR. ERRET SMITH AND FARMED BY
 JV4580'MR. EDWIN H. ENGLAND.  IT IS ABOUT 25 YARDS N OF THE HIGHEST
 JV4580'PART OF THE HILL, INSIDE A PASTURE AND ABOUT 8 FEET S OF A
 JV4580'WOVEN WIRE FENCE.  IT PROJECTS ABOUT 4 INCHES AND THE DISK IS
 JV4580'STAMPED CENTER 1943.
 JV4580'
 JV4580'SURFACE, UNDERGROUND, AND AZIMUTH MARKS ARE BRONZE DISKS SET
 JV4580'IN CONCRETE.
 JV4580'
 JV4580'REFERENCE MARKS ARE BRONZE DISKS SET IN DRILL HOLES IN
 JV4580'OUTCROPPING BEDROCK.
 JV4580'
 JV4580'REFERENCE MARK NO.1 IS N OF THE STATION.  THE OUTCROP PROJECTS
 JV4580'ABOUT 2 FEET AND THE DISK IS STAMPED CENTER NO.1 1943.
 JV4580'
 JV4580'REFERENCE MARK NO.2 IS WSW OF THE STATION.  THE OUTCROP IS
 JV4580'FLUSH WITH THE GROUND AND ABOUT 6 FEET S OF THE WIRE FENCE.  THE
 JV4580'DISK IS STAMPED CENTER NO.2 1943.
 JV4580'
 JV4580'THE AZIMUTH MARK IS LOCATED ABOUT 0.75 MILE N OF THE STATION.  IT
 JV4580'IS 15 FEET S OF THE CENTER OF A DIRT ROAD AND 50 YARDS W OF A
 JV4580'TURN IN THIS ROAD (SEE DESCRIPTION TO REACH STATION).  IT
 JV4580'PROJECTS ABOUT 6 INCHES AND THE DISK IS STAMPED CENTER 1943.
 JV4580'
 JV4580'TO REACH THE STATION FROM URBANA AT THE JUNCTION OF STATE
 JV4580'HIGHWAY 80 AND U.S. HIGHWAY 240 GO EASTERLY ON HIGHWAY 80 FOR
 JV4580'1.9 MILES TO A CROSSROAD (HARD SURFACE LEFT, N).  TURN RIGHT ON
 JV4580'A DIRT ROAD AND GO 0.2 MILE TO THE AZIMUTH MARK ON THE RIGHT
 JV4580'ABOUT 50 YARDS BEFORE THE ROAD TURNS TO THE RIGHT.  CONTINUE ON
 JV4580'THE MAIN ROAD FOR 0.7 MILE TO A GATE ON THE LEFT INTO A
 JV4580'PASTURE.  PASS THROUGH GATE AND GO SOUTHERLY FOR ABOUT 0.2
 JV4580'MILE TO THE HIGHEST POINT AND THE STATION.
 JV4580'
 JV4580'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAMASCUS.
 JV4580'
 JV4580'A 77-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT DALE.
 JV4580'
 JV4580'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT COMUS.
 JV4580'
 JV4580'A 77-FOOT TOWER WILL SEE A 4-FOOT LIGHT AT 18-5 (M.G.S.)
 JV4580'
 JV4580'A 64-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT RIDGE.
 JV4580'
 JV4580'A 4-FOOT STAND WILL SEE AN 87-FOOT LIGHT AT BART 1939.
 JV4580'
 JV4580'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV4580
 JV4580                          STATION RECOVERY (1958)
 JV4580
 JV4580'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4580'STATION AND REFERENCE MARKS NO. 1 AND 2 WAS RECOVERED AS
 JV4580'DESCRIBED AND FOUND IN GOOD CONDITION.  AZIMUTH MARK WAS FOUND
 JV4580'DESTROYED.  THEREFORE A NEW AZIMUTH MARK WAS ESTABLISHED, A
 JV4580'CHECK WAS MADE OF THE DISTANCE AND DIRECTION TO THE REFERENCE
 JV4580'MARKS.  THE 1943 DESCRIPTION IS ADEQUATE EXCEPT THE NEW AZIMUTH
 JV4580'MARK IS 21-1/2 FEET EAST-NORTHEAST OF APPROXIMATE CENTERLINE OF
 JV4580'ROAD, 8 FEET SOUTHEAST OF UTILITY POLE, 2 FEET NORTH-NORTHWEST
 JV4580'OF WITNESS POST AND 1 FOOT WEST-NORTHWEST OF FENCELINE.
 JV4580'THE MARK IS SET FLUSH AND THE DISK IS STAMPED CENTER 1958.
 JV4580'
 JV4580'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 355 AND 80 IN
 JV4580'THE SOUTHEAST EDGE OF URBANA, GO EASTERLY ON STATE HIGHWAY NO. 80
 JV4580'FOR 1.75 MILES TO SURFACED CROSSROADS.  TURN RIGHT AND GO
 JV4580'SOUTHERLY ON BIG WOODS ROAD FOR 0.15 MILE TO AZIMUTH MARK ON
 JV4580'LEFT (EAST) SIDE OF ROAD AS DESCRIBED.  CONTINUE SOUTHWESTERLY
 JV4580'ON BIG WOODS ROAD FOR 0.6 MILE TO GATE ON LEFT (SOUTHEAST) SIDE
 JV4580'OF ROAD.  PASS THROUGH GATE TURN RIGHT AND FOLLOW FENCE
 JV4580'SOUTHERLY THENCE EASTERLY FOR 0.2 MILE TO HIGHEAST POINT AND
 JV4580'STATION AT EDGE OF WOODS, JUST NORTH OF FENCE CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6394 ***********************************************************************
 JV6394  DESIGNATION -  CENTER
 JV6394  PID         -  JV6394
 JV6394  STATE/COUNTY-  MD/MONTGOMERY
 JV6394  COUNTRY     -  US
 JV6394  USGS QUAD   -  GAITHERSBURG (2016)
 JV6394
 JV6394                         *CURRENT SURVEY CONTROL
 JV6394  ______________________________________________________________________
 JV6394* NAD 83(1986) POSITION- 39 07 50.     (N) 077 12 42.     (W)   SCALED
 JV6394* NAVD 88 ORTHO HEIGHT -   126.467 (meters)      414.92  (feet) ADJUSTED
 JV6394  ______________________________________________________________________
 JV6394  GEOID HEIGHT    -        -31.736 (meters)                     GEOID18
 JV6394  DYNAMIC HEIGHT  -        126.401 (meters)      414.70  (feet) COMP
 JV6394  MODELED GRAVITY -    980,100.5   (mgal)                       NAVD 88
 JV6394
 JV6394  VERT ORDER      -  FIRST     CLASS II
 JV6394
 JV6394.The horizontal coordinates were scaled from a map and have
 JV6394.an estimated accuracy of +/- 6 seconds.
 JV6394
 JV6394.The orthometric height was determined by differential leveling and
 JV6394.adjusted by the NATIONAL GEODETIC SURVEY
 JV6394.in July 1994.
 JV6394
 JV6394.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6394.GEOID18 height accuracy estimate available here.
 JV6394
 JV6394.Click photographs - Photos may exist for this station.
 JV6394
 JV6394.The dynamic height is computed by dividing the NAVD 88
 JV6394.geopotential number by the normal gravity value computed on the
 JV6394.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6394.degrees latitude (g = 980.6199 gals.).
 JV6394
 JV6394.The modeled gravity was interpolated from observed gravity values.
 JV6394
 JV6394;                    North         East    Units  Estimated Accuracy
 JV6394;SPC MD       -   162,520.      381,700.      MT  (+/- 180 meters Scaled)
 JV6394
 JV6394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ088335(NAD 83)
 JV6394
 JV6394                          SUPERSEDED SURVEY CONTROL
 JV6394
 JV6394.No superseded survey control is available for this station.
 JV6394
 JV6394_MARKER: I = METAL ROD
 JV6394_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6394_STAMPING: CENTER 1989
 JV6394_MARK LOGO: NGS
 JV6394_PROJECTION: RECESSED 3 CENTIMETERS
 JV6394_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6394_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6394+STABILITY: POSITION/ELEVATION WELL
 JV6394_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6394+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6394_ROD/PIPE-DEPTH: 3.7 meters
 JV6394_SLEEVE-DEPTH  : 1 meters
 JV6394
 JV6394  HISTORY     - Date     Condition        Report By
 JV6394  HISTORY     - 1989     MONUMENTED       NGS
 JV6394
 JV6394                          STATION DESCRIPTION
 JV6394
 JV6394'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6394'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6394'TECHONLOGY GROUNDS, 0.08 KM (0.05 MI) SOUTH ALONG EAST DRIVE FROM THE
 JV6394'JUNCTION OF SOUTH DRIVE, THENCE 0.16 KM (0.10 MI) EAST ACROSS AND
 JV6394'DOWN A SLOPE THROUGH TREES TO THE BOTTOM OF THE SLOPE AND THE MARK,
 JV6394'10.2 M (33.46 FT) SOUTHEAST OF A SPRUCE TREE, 32.6 M (106.96 FT)
 JV6394'NORTHWEST OF THE WEST EDGE OF A WOODEN POST FOR A HAND RAIL FOR A
 JV6394'WOODEN BRIDGE OVER A CREEK, 41.8 M (137.14 FT) NORTH OF THE NORTH
 JV6394'EDGE OF A LARGE POND, 45.5 M (149.28 FT) NORTHEAST OF THE NORTH ONE
 JV6394'OF TWO STEEL POLES SUPPORTING A FISHING PERMIT REGULATION SIGN, AND
 JV6394'27.1 M (88.91 FT) NORTHEAST OF A 14-INCH RED OAK TREE.  NOTE--ACCESS
 JV6394'TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6393 ***********************************************************************
 JV6393  DESIGNATION -  CENTER A
 JV6393  PID         -  JV6393
 JV6393  STATE/COUNTY-  MD/MONTGOMERY
 JV6393  COUNTRY     -  US
 JV6393  USGS QUAD   -  GAITHERSBURG (2016)
 JV6393
 JV6393                         *CURRENT SURVEY CONTROL
 JV6393  ______________________________________________________________________
 JV6393* NAD 83(2011) POSITION- 39 07 49.54020(N) 077 12 46.24342(W)   ADJUSTED
 JV6393* NAD 83(2011) ELLIP HT-    98.814 (meters)        (06/27/12)   ADJUSTED
 JV6393* NAD 83(2011) EPOCH   -  2010.00
 JV6393* NAVD 88 ORTHO HEIGHT -   130.560 (meters)      428.35  (feet) ADJUSTED
 JV6393  ______________________________________________________________________
 JV6393  GEOID HEIGHT    -        -31.737 (meters)                     GEOID18
 JV6393  NAD 83(2011) X  -  1,096,529.886 (meters)                     COMP
 JV6393  NAD 83(2011) Y  - -4,831,407.767 (meters)                     COMP
 JV6393  NAD 83(2011) Z  -  4,003,621.819 (meters)                     COMP
 JV6393  LAPLACE CORR    -          1.32  (seconds)                    DEFLEC18
 JV6393  DYNAMIC HEIGHT  -        130.492 (meters)      428.12  (feet) COMP
 JV6393  MODELED GRAVITY -    980,100.7   (mgal)                       NAVD 88
 JV6393
 JV6393  VERT ORDER      -  FIRST     CLASS I
 JV6393
 JV6393  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6393  Standards:
 JV6393         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6393            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6393  -------------------------------------------------------------------
 JV6393  NETWORK    0.52   0.88           0.24   0.17   0.45      0.09122850
 JV6393  -------------------------------------------------------------------
 JV6393  Click here for local accuracies and other accuracy information.
 JV6393
 JV6393.The horizontal coordinates were established by GPS observations
 JV6393.and adjusted by the National Geodetic Survey in June 2012.
 JV6393
 JV6393.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6393.been affixed to the stable North American tectonic plate. See 
 JV6393.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6393
 JV6393.The horizontal coordinates are valid at the epoch date displayed above
 JV6393.which is a decimal equivalence of Year/Month/Day.
 JV6393
 JV6393.The orthometric height was determined by differential leveling and
 JV6393.adjusted by the NATIONAL GEODETIC SURVEY
 JV6393.in July 1994.
 JV6393
 JV6393.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6393.GEOID18 height accuracy estimate available here.
 JV6393
 JV6393.Click photographs - Photos may exist for this station.
 JV6393
 JV6393.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6393
 JV6393.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6393
 JV6393.The ellipsoidal height was determined by GPS observations
 JV6393.and is referenced to NAD 83.
 JV6393
 JV6393.The dynamic height is computed by dividing the NAVD 88
 JV6393.geopotential number by the normal gravity value computed on the
 JV6393.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6393.degrees latitude (g = 980.6199 gals.).
 JV6393
 JV6393.The modeled gravity was interpolated from observed gravity values.
 JV6393
 JV6393. The following values were computed from the NAD 83(2011) position.
 JV6393
 JV6393;                    North         East     Units Scale Factor Converg.
 JV6393;SPC MD       -   162,506.689   381,596.626   MT  0.99995970   -0 08 00.9
 JV6393;SPC MD       -   533,157.36  1,251,954.93   sFT  0.99995970   -0 08 00.9
 JV6393;UTM  18      - 4,333,582.088   308,728.341   MT  1.00005049   -1 23 48.9
 JV6393
 JV6393!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6393!SPC MD       -   0.99998450  x   0.99995970  =   0.99994420
 JV6393!UTM  18      -   0.99998450  x   1.00005049  =   1.00003499
 JV6393
 JV6393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0872833582(NAD 83)
 JV6393
 JV6393|---------------------------------------------------------------------|
 JV6393| PID    Reference Object                     Distance      Geod. Az  |
 JV6393|                                                           dddmmss.s |
 JV6393| JV6440 NBS 3                               326.799 METERS 08201     |
 JV6393| JV6439 NBS 5                               192.494 METERS 25911     |
 JV6393|---------------------------------------------------------------------|
 JV6393
 JV6393                          SUPERSEDED SURVEY CONTROL
 JV6393
 JV6393  NAD 83(2007)-  39 07 49.54044(N)    077 12 46.24419(W) AD(2002.00) 0
 JV6393  ELLIP H (02/10/07)   98.847  (m)                       GP(2002.00)    
 JV6393  ELLIP H (08/30/02)   98.853  (m)                       GP(       ) 4 2
 JV6393  ELLIP H (04/01/98)   98.867  (m)                       GP(       ) 4 1
 JV6393  NAD 83(1993)-  39 07 49.54031(N)    077 12 46.24419(W) AD(       ) 1
 JV6393  ELLIP H (11/14/94)   98.746  (m)                       GP(       ) 4 2
 JV6393  NAD 83(1991)-  39 07 49.53727(N)    077 12 46.24178(W) AD(       ) 1
 JV6393  ELLIP H (03/04/93)   98.810  (m)                       GP(       ) 4 1
 JV6393  NAVD 88 (03/04/93)  130.6    (m)  GEOID90  model used  GPS OBS        
 JV6393
 JV6393.Superseded values are not recommended for survey control.
 JV6393
 JV6393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6393.See file dsdata.pdf to determine how the superseded data were derived.
 JV6393
 JV6393_MARKER: I = METAL ROD
 JV6393_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6393_STAMPING: CENTER A 1989
 JV6393_MARK LOGO: NGS
 JV6393_PROJECTION: RECESSED 3 CENTIMETERS
 JV6393_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6393_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6393+STABILITY: POSITION/ELEVATION WELL
 JV6393_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6393+SATELLITE: SATELLITE OBSERVATIONS - June 09, 1992
 JV6393_ROD/PIPE-DEPTH: 3.3 meters
 JV6393_SLEEVE-DEPTH  : 1.0 meters
 JV6393
 JV6393  HISTORY     - Date     Condition        Report By
 JV6393  HISTORY     - 1989     MONUMENTED       NGS
 JV6393  HISTORY     - 19911015 GOOD             NGS
 JV6393  HISTORY     - 19920609 GOOD
 JV6393  HISTORY     - 19940419 GOOD             NGS
 JV6393
 JV6393                          STATION DESCRIPTION
 JV6393
 JV6393'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6393'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6393'TECHNOLOGY GROUNDS, 0.05 KM (0.03 MI) SOUTH ALONG EAST DRIVE FROM THE
 JV6393'JUNCTION OF SOUTH DRIVE TO THE MARK ON THE LEFT, 60.6 M (198.82 FT)
 JV6393'EAST-SOUTHEST OF AND ACROSS THE DRIVE FROM BENCH MARK KIN E, 52.1 M
 JV6393'(170.93 FT) EAST OF THE CENTERLINE OF THE DRIVE, 10.1 M (33.14 FT)
 JV6393'SOUTHWEST OF A 6-INCH MAPLE TREE, AND 30.6 M (100.39 FT) WEST OF A
 JV6393'9-INCH OAK TREE.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 JV6393'LOGO CAP.
 JV6393
 JV6393                          STATION RECOVERY (1991)
 JV6393
 JV6393'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV6393'RECOVERED IN GOOD CONDITION.
 JV6393
 JV6393                          STATION RECOVERY (1992)
 JV6393
 JV6393'RECOVERED 1992
 JV6393'RECOVERED IN GOOD CONDITION.
 JV6393
 JV6393                          STATION RECOVERY (1994)
 JV6393
 JV6393'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994
 JV6393'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6393'TECHNOLOGY GROUNDS, 0.05 KM (0.03 MI) SOUTH ALONG EAST DRIVE FROM THE
 JV6393'JUNCTION OF SOUTH DRIVE TO THE MARK ON THE LEFT, 60.6 M (198.82 FT)
 JV6393'EAST-SOUTHEST OF AND ACROSS THE DRIVE FROM BENCH MARK KIN E, 52.1 M
 JV6393'(170.93 FT) EAST OF THE CENTERLINE OF THE DRIVE, 10.1 M (33.14 FT)
 JV6393'SOUTHWEST OF A 6-INCH MAPLE TREE, AND 30.6 M (100.39 FT) WEST OF A
 JV6393'9-INCH OAK TREE.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 JV6393'LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AH8661 ***********************************************************************
 AH8661  SACS        -  This is a Secondary Airport Control Station.
 AH8661  DESIGNATION -  CGE A
 AH8661  PID         -  AH8661
 AH8661  STATE/COUNTY-  MD/DORCHESTER
 AH8661  COUNTRY     -  US
 AH8661  USGS QUAD   -  CAMBRIDGE (2016)
 AH8661
 AH8661                         *CURRENT SURVEY CONTROL
 AH8661  ______________________________________________________________________
 AH8661* NAD 83(2011) POSITION- 38 32 16.96086(N) 076 01 49.09999(W)   ADJUSTED
 AH8661* NAD 83(2011) ELLIP HT-   -30.400 (meters)        (06/27/12)   ADJUSTED
 AH8661* NAD 83(2011) EPOCH   -  2010.00
 AH8661* NAVD 88 ORTHO HEIGHT -     4.76  (meters)       15.6   (feet) GPS OBS
 AH8661  ______________________________________________________________________
 AH8661  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AH8661  GEOID HEIGHT    -        -35.142 (meters)                     GEOID96
 AH8661  GEOID HEIGHT    -        -35.165 (meters)                     GEOID18
 AH8661  NAD 83(2011) X  -  1,205,936.460 (meters)                     COMP
 AH8661  NAD 83(2011) Y  - -4,847,668.806 (meters)                     COMP
 AH8661  NAD 83(2011) Z  -  3,952,314.692 (meters)                     COMP
 AH8661  LAPLACE CORR    -         -2.86  (seconds)                    DEFLEC18
 AH8661
 AH8661  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AH8661  Standards:
 AH8661         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AH8661            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AH8661  -------------------------------------------------------------------
 AH8661  NETWORK    1.21   1.20           0.50   0.48   0.61     -0.21343483
 AH8661  -------------------------------------------------------------------
 AH8661  Click here for local accuracies and other accuracy information.
 AH8661
 AH8661.This mark is at Cambridge-Dorchester Airport (CGE)
 AH8661
 AH8661.The horizontal coordinates were established by GPS observations
 AH8661.and adjusted by the National Geodetic Survey in June 2012.
 AH8661
 AH8661.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AH8661.been affixed to the stable North American tectonic plate. See 
 AH8661.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AH8661
 AH8661.The horizontal coordinates are valid at the epoch date displayed above
 AH8661.which is a decimal equivalence of Year/Month/Day.
 AH8661
 AH8661.The orthometric height was determined by GPS observations and a
 AH8661.high-resolution geoid model.
 AH8661
 AH8661.GPS derived orthometric heights for airport stations designated as
 AH8661.PACS or SACS are published to 2 decimal places.  This maintains
 AH8661.centimeter relative accuracy between the PACS and SACS.  It does
 AH8661.not indicate centimeter accuracy relative to other marks which are
 AH8661.part of the published vertical control network.
 AH8661
 AH8661.Significant digits in the geoid height do not necessarily reflect accuracy.
 AH8661.GEOID18 height accuracy estimate available here.
 AH8661
 AH8661.Click photographs - Photos may exist for this station.
 AH8661
 AH8661.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AH8661
 AH8661.The Laplace correction was computed from DEFLEC18 derived deflections.
 AH8661
 AH8661.The ellipsoidal height was determined by GPS observations
 AH8661.and is referenced to NAD 83.
 AH8661
 AH8661. The following values were computed from the NAD 83(2011) position.
 AH8661
 AH8661;                    North         East     Units Scale Factor Converg.
 AH8661;SPC MD       -    97,175.406   484,540.247   MT  0.99996712   +0 36 31.0
 AH8661;SPC MD       -   318,816.31  1,589,695.79   sFT  0.99996712   +0 36 31.0
 AH8661;UTM  18      - 4,266,017.975   410,205.729   MT  0.99969929   -0 38 31.1
 AH8661
 AH8661!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AH8661!SPC MD       -   1.00000477  x   0.99996712  =   0.99997189
 AH8661!UTM  18      -   1.00000477  x   0.99969929  =   0.99970406
 AH8661
 AH8661_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1020566017(NAD 83)
 AH8661
 AH8661|---------------------------------------------------------------------|
 AH8661| PID    Reference Object                     Distance      Geod. Az  |
 AH8661|                                                           dddmmss.s |
 AH8661| HV8840 CAMBPORT                            308.445 METERS 12335     |
 AH8661|---------------------------------------------------------------------|
 AH8661
 AH8661                          SUPERSEDED SURVEY CONTROL
 AH8661
 AH8661  NAD 83(2007)-  38 32 16.96113(N)    076 01 49.10089(W) AD(2002.00) 0
 AH8661  ELLIP H (02/10/07)  -30.366  (m)                       GP(2002.00)    
 AH8661  ELLIP H (01/21/03)  -30.363  (m)                       GP(       ) 4 2
 AH8661  NAD 83(1991)-  38 32 16.96128(N)    076 01 49.10137(W) AD(       ) 1
 AH8661  ELLIP H (03/25/99)  -30.369  (m)                       GP(       ) 4 2
 AH8661
 AH8661.Superseded values are not recommended for survey control.
 AH8661
 AH8661.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AH8661.See file dsdata.pdf to determine how the superseded data were derived.
 AH8661
 AH8661_MARKER: DD = SURVEY DISK
 AH8661_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AH8661_STAMPING: CGE A 1996
 AH8661_MARK LOGO: NGS
 AH8661_MAGNETIC: N = NO MAGNETIC MATERIAL
 AH8661_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AH8661+STABILITY: SURFACE MOTION
 AH8661_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AH8661+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AH8661
 AH8661  HISTORY     - Date     Condition        Report By
 AH8661  HISTORY     - 1996     MONUMENTED       NGS
 AH8661
 AH8661                          STATION DESCRIPTION
 AH8661
 AH8661'DESCRIBED BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 AH8661'THE STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) SOUTHEAST FROM CAMBRIDGE,
 AH8661'1 MI (1.6 KM) SOUTH FROM JACKSON, AND AT THE CENTER OF THE CAMBRIDGE
 AH8661'DORCHESTER COUNTY AIRPORT.  OWNERSHIP - CAMBRIDGE COUNTY.  CONTACT
 AH8661'SNAP JOHNSON, APT MNGR (410) 228-4571 FOR PERMISSION TO ACCESS MARK.
 AH8661'TO REACH THE STATION FROM THE SOUTH END OF THE U.S.  HIGHWAY 50 BRIDGE
 AH8661'OVER THE CHOPTANK RIVER AT CAMBRIDGE, GO SOUTH ON U.S.  50 FOR 2.0 MI
 AH8661'(3.2 KM) TO A CROSSROADS.  TURN RIGHT AND GO SOUTHEAST ON BUCKTOWN
 AH8661'ROAD 1.35 TO A SIDE ROAD LEFT.  TURN LEFT AND GO NORTHEAST ON A PAVED
 AH8661'ROAD FOR 0.05 TO THE F.B.O.  ON THE LEFT.  CONTINUE EAST-NORTHEAST
 AH8661'ACCROSS THE APRON TO THE STATION JUST SOUTH OF THE CONNECTOR TAXIXAY.
 AH8661'STATION IS DIRECTLY ACCROSS FROM THE F.B.O., 52.4 FT (16.0 M)
 AH8661'SOUTHWEST FROM THE INTERSECTION OF THE CONNECTING TAXIWAY AND THE
 AH8661'PARALLEL TAXIWAY, 52.0 FT (15.8 M) SOUTH-SOUTHEAST OF THE CENTERLINE
 AH8661'OF THE TAXIWAY LEADING TO THE APRON, AND 34.0 FT (10.4 M)
 AH8661'EAST-NORTHEAST OF THE EDGE OF THE AIRCRAFT PARKING AREA (APRON) .
 AH8661'STATION IS AIRPORT SACS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9295 ***********************************************************************
 AA9295  PACS        -  This is a Primary Airport Control Station.
 AA9295  DESIGNATION -  CGS A
 AA9295  PID         -  AA9295
 AA9295  STATE/COUNTY-  MD/PRINCE GEORGES
 AA9295  COUNTRY     -  US
 AA9295  USGS QUAD   -  WASHINGTON EAST (2016)
 AA9295
 AA9295                         *CURRENT SURVEY CONTROL
 AA9295  ______________________________________________________________________
 AA9295* NAD 83(2011) POSITION- 38 58 49.67033(N) 076 55 21.39465(W)   ADJUSTED
 AA9295* NAD 83(2011) ELLIP HT-   -19.157 (meters)        (06/27/12)   ADJUSTED
 AA9295* NAD 83(2011) EPOCH   -  2010.00
 AA9295* NAVD 88 ORTHO HEIGHT -    13.04  (meters)       42.8   (feet) GPS OBS
 AA9295  ______________________________________________________________________
 AA9295  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AA9295  GEOID HEIGHT    -        -32.162 (meters)                     GEOID96
 AA9295  GEOID HEIGHT    -        -32.171 (meters)                     GEOID18
 AA9295  NAD 83(2011) X  -  1,123,342.313 (meters)                     COMP
 AA9295  NAD 83(2011) Y  - -4,835,919.771 (meters)                     COMP
 AA9295  NAD 83(2011) Z  -  3,990,619.267 (meters)                     COMP
 AA9295  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 AA9295
 AA9295  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9295  Standards:
 AA9295         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9295            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9295  -------------------------------------------------------------------
 AA9295  NETWORK    1.58   3.08           0.68   0.60   1.57      0.16483832
 AA9295  -------------------------------------------------------------------
 AA9295  Click here for local accuracies and other accuracy information.
 AA9295
 AA9295.This mark is at College Park Airport (CGS)
 AA9295
 AA9295.The horizontal coordinates were established by GPS observations
 AA9295.and adjusted by the National Geodetic Survey in June 2012.
 AA9295
 AA9295.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9295.been affixed to the stable North American tectonic plate. See 
 AA9295.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9295
 AA9295.The horizontal coordinates are valid at the epoch date displayed above
 AA9295.which is a decimal equivalence of Year/Month/Day.
 AA9295
 AA9295.The orthometric height was determined by GPS observations and a
 AA9295.high-resolution geoid model.
 AA9295
 AA9295.GPS derived orthometric heights for airport stations designated as
 AA9295.PACS or SACS are published to 2 decimal places.  This maintains
 AA9295.centimeter relative accuracy between the PACS and SACS.  It does
 AA9295.not indicate centimeter accuracy relative to other marks which are
 AA9295.part of the published vertical control network.
 AA9295
 AA9295.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9295.GEOID18 height accuracy estimate available here.
 AA9295
 AA9295.Click photographs - Photos may exist for this station.
 AA9295
 AA9295.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9295
 AA9295.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9295
 AA9295.The ellipsoidal height was determined by GPS observations
 AA9295.and is referenced to NAD 83.
 AA9295
 AA9295. The following values were computed from the NAD 83(2011) position.
 AA9295
 AA9295;                    North         East     Units Scale Factor Converg.
 AA9295;SPC MD       -   145,840.358   406,705.567   MT  0.99995151   +0 02 54.9
 AA9295;SPC MD       -   478,477.91  1,334,333.18   sFT  0.99995151   +0 02 54.9
 AA9295;UTM  18      - 4,316,366.668   333,465.499   MT  0.99994151   -1 12 34.9
 AA9295
 AA9295!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9295!SPC MD       -   1.00000301  x   0.99995151  =   0.99995452
 AA9295!UTM  18      -   1.00000301  x   0.99994151  =   0.99994452
 AA9295
 AA9295_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3346516366(NAD 83)
 AA9295
 AA9295|---------------------------------------------------------------------|
 AA9295| PID    Reference Object                     Distance      Geod. Az  |
 AA9295|                                                           dddmmss.s |
 AA9295| AA9294 CGS C                               348.779 METERS 13658     |
 AA9295| AA9296 CGS B                               299.359 METERS 31928     |
 AA9295|---------------------------------------------------------------------|
 AA9295
 AA9295                          SUPERSEDED SURVEY CONTROL
 AA9295
 AA9295  NAD 83(2007)-  38 58 49.67055(N)    076 55 21.39548(W) AD(2002.00) 0
 AA9295  ELLIP H (02/10/07)  -19.142  (m)                       GP(2002.00)    
 AA9295  ELLIP H (08/09/02)  -19.132  (m)                       GP(       ) 4 2
 AA9295  NAD 83(1991)-  38 58 49.67159(N)    076 55 21.39526(W) AD(       ) B
 AA9295  ELLIP H (03/24/98)  -19.060  (m)                       GP(       ) 4 1
 AA9295  NAD 83(1993)-  38 58 49.67159(N)    076 55 21.39521(W) AD(       ) B
 AA9295  ELLIP H (11/22/95)  -19.060  (m)                       GP(       ) 1 1
 AA9295  NAVD 88 (11/22/95)   13.05   (m)  GEOID93  model used  GPS OBS        
 AA9295
 AA9295.Superseded values are not recommended for survey control.
 AA9295
 AA9295.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9295.See file dsdata.pdf to determine how the superseded data were derived.
 AA9295
 AA9295_MARKER: I = METAL ROD
 AA9295_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 AA9295_STAMPING: CGS A 1994
 AA9295_MARK LOGO: NGS
 AA9295_PROJECTION: FLUSH
 AA9295_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9295_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AA9295_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9295+SATELLITE: SATELLITE OBSERVATIONS - February 18, 1997
 AA9295_ROD/PIPE-DEPTH: 6.4 meters
 AA9295_SLEEVE-DEPTH  : 1 meters
 AA9295
 AA9295  HISTORY     - Date     Condition        Report By
 AA9295  HISTORY     - 1994     MONUMENTED       NGS
 AA9295  HISTORY     - 19941024 GOOD             NGS
 AA9295  HISTORY     - 19970218 GOOD             NGS
 AA9295
 AA9295                          STATION DESCRIPTION
 AA9295
 AA9295'DESCRIBED BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 AA9295'STATION IS LOCATED ABOUT 10 MI (16.1 KM) NORTHEAST OF WASHINGTON,
 AA9295'D.C., 2.5 MI (4.0 KM) WEST OF I-95, AND 1 MI (1.6 KM) EAST OF COLLEGE
 AA9295'PARK, AT THE COLLEGE PARK AIRPORT.  MARK IS IN THE MIDDLE SECTION OF
 AA9295'THE AIRFIELD ACCROSS FROM THE TERMINAL BUILDING.  ACCESS MUST BE
 AA9295'GAINED THROUGH MS.  POLLY HILL, MANAGER, 1901 CRPL FRANK S.  SCOTT
 AA9295'DRIVE, COLLEGE PARK, MD 20740.  PHONE 301-864-5844.
 AA9295'
 AA9295'TO REACH FROM THE INTERCHANGE OF I-495/95 (CAPITAL BELTWAY) AND STATE
 AA9295'ROUTE 201 (EXIT 23) , GO SOUTH ON S.R.  201 FOR 0.9 MI (1.4 KM) TO THE
 AA9295'INTERSECTION WITH S.R.  193.  CONTINUE SOUTH ON S.R.  201 FOR 1.4 MI
 AA9295'(2.3 KM) TO CALVERT ROAD ON THE RIGHT.  TURN RIGHT AND GO WEST ON
 AA9295'CALVERT ROAD FOR 0.65 MI (1.05 KM) TO 51ST AVE ON THE RIGHT.  TURN
 AA9295'RIGHT AND GO NORTH ON 51ST AVE FOR 0.15 MI (0.24 KM) TO THE AIRPORT
 AA9295'TERMINAL BUILDING.  FROM THE NORTHEAST SIDE OF THE TERMINAL BUILDING,
 AA9295'GO NORTHEAST ACCROSS THE APRON AND ACCROSS PARALLEL TAXIWAY TO STATION
 AA9295'IN THE INFIELD.
 AA9295'
 AA9295'IT IS 206 FT (62.8 M) NORTH-NORTHEAST OF THE CENTERLINE OF THE TAXIWAY
 AA9295'CONNECTING RUNWAY 15-33 FROM THE SOUTH SIDE OF THE TERMINAL, 95.0 FT
 AA9295'(29.0 M) SOUTH OF THE FIRST RUNWAY LIGHT NORTH OF THE CONNECTING
 AA9295'TAXIWAY, 68.0 FT (20.7 M) NORTHWEST FROM THE CENTER OF THE METAL GRATE
 AA9295'OF A CONCRETE STORM DRAIN, AND 53.1 FT (16.2 M) NORTHEAST OF THE
 AA9295'CENTERLINE OF THE PARALLEL TAXIWAY.
 AA9295
 AA9295                          STATION RECOVERY (1997)
 AA9295
 AA9295'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (AJL)
 AA9295'STATION IS LOCATED ABOUT 10 MI (16.1 KM) NORTHEAST OF WASHINGTON,
 AA9295'D.C., 2.5 MI (4.0 KM) WEST OF I-95, AND 1 MI (1.6 KM) EAST OF COLLEGE
 AA9295'PARK, AT THE COLLEGE PARK AIRPORT.  MARK IS IN THE MIDDLE SECTION OF
 AA9295'THE AIRFIELD ACCROSS FROM THE TERMINAL BUILDING.  ACCESS MUST BE
 AA9295'GAINED THROUGH MS.TERESA ARIAS, MANAGER, 1901 CRPL FRANK S.  SCOTT
 AA9295'DRIVE, COLLEGE PARK, MD 20740.  PHONE 301-864-5844.  TO REACH FROM THE
 AA9295'INTERCHANGE OF I-495/95 (CAPITAL BELTWAY) AND STATE ROUTE 201 (EXIT
 AA9295'23) , GO SOUTH ON S.R.  201 FOR 0.9 MI (1.4 KM) TO THE INTERSECTION
 AA9295'WITH S.R.  193.  CONTINUE SOUTH ON S.R.  201 FOR 1.4 MI (2.3 KM) TO
 AA9295'CALVERT ROAD ON THE RIGHT.  TURN RIGHT AND GO WEST ON CALVERT ROAD FOR
 AA9295'0.65 MI (1.05 KM) TO 51ST AVE ON THE RIGHT.  TURN RIGHT AND GO NORTH
 AA9295'ON 51ST AVE FOR 0.15 MI (0.24 KM) TO THE AIRPORT TERMINAL BUILDING.
 AA9295'FROM THE NORTHEAST SIDE OF THE TERMINAL BUILDING, GO NORTHEAST ACCROSS
 AA9295'THE APRON AND ACCROSS PARALLEL TAXIWAY TO STATION IN THE INFIELD.THE
 AA9295'STATION IS THE TOP CENTER OF A STAINLESS STEEL ROD.IT IS 206 FT (62.8
 AA9295'M) NORTH-NORTHEAST OF THE CENTERLINE OF THE TAXIWAY CONNECTING RUNWAY
 AA9295'15-33 FROM THE SOUTH SIDE OF THE TERMINAL, 95.0 FT (29.0 M) SOUTH OF
 AA9295'THE FIRST RUNWAY LIGHT NORTH OF THE CONNECTING TAXIWAY, 68.0 FT (20.7
 AA9295'M) NORTHWEST FROM THE CENTER OF THE METAL GRATE OF A CONCRETE STORM
 AA9295'DRAIN, AND 53.1 FT (16.2 M) NORTHEAST OF THE CENTERLINE OF THE
 AA9295'PARALLEL TAXIWAY.  THIS STATION IS DESIGNATED AS THE PACS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9296 ***********************************************************************
 AA9296  SACS        -  This is a Secondary Airport Control Station.
 AA9296  DESIGNATION -  CGS B
 AA9296  PID         -  AA9296
 AA9296  STATE/COUNTY-  MD/PRINCE GEORGES
 AA9296  COUNTRY     -  US
 AA9296  USGS QUAD   -  WASHINGTON EAST (2016)
 AA9296
 AA9296                         *CURRENT SURVEY CONTROL
 AA9296  ______________________________________________________________________
 AA9296* NAD 83(2011) POSITION- 38 58 57.04745(N) 076 55 29.47907(W)   ADJUSTED
 AA9296* NAD 83(2011) ELLIP HT-   -18.334 (meters)        (06/27/12)   ADJUSTED
 AA9296* NAD 83(2011) EPOCH   -  2010.00
 AA9296* NAVD 88 ORTHO HEIGHT -    13.86  (meters)       45.5   (feet) GPS OBS
 AA9296  ______________________________________________________________________
 AA9296  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AA9296  GEOID HEIGHT    -        -32.155 (meters)                     GEOID96
 AA9296  GEOID HEIGHT    -        -32.164 (meters)                     GEOID18
 AA9296  NAD 83(2011) X  -  1,123,120.541 (meters)                     COMP
 AA9296  NAD 83(2011) Y  - -4,835,825.022 (meters)                     COMP
 AA9296  NAD 83(2011) Z  -  3,990,796.625 (meters)                     COMP
 AA9296  LAPLACE CORR    -         -4.80  (seconds)                    DEFLEC18
 AA9296
 AA9296  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9296  Standards:
 AA9296         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9296            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9296  -------------------------------------------------------------------
 AA9296  NETWORK    1.61   3.08           0.70   0.61   1.57      0.14619181
 AA9296  -------------------------------------------------------------------
 AA9296  Click here for local accuracies and other accuracy information.
 AA9296
 AA9296.This mark is at College Park Airport (CGS)
 AA9296
 AA9296.The horizontal coordinates were established by GPS observations
 AA9296.and adjusted by the National Geodetic Survey in June 2012.
 AA9296
 AA9296.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9296.been affixed to the stable North American tectonic plate. See 
 AA9296.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9296
 AA9296.The horizontal coordinates are valid at the epoch date displayed above
 AA9296.which is a decimal equivalence of Year/Month/Day.
 AA9296
 AA9296.The orthometric height was determined by GPS observations and a
 AA9296.high-resolution geoid model.
 AA9296
 AA9296.GPS derived orthometric heights for airport stations designated as
 AA9296.PACS or SACS are published to 2 decimal places.  This maintains
 AA9296.centimeter relative accuracy between the PACS and SACS.  It does
 AA9296.not indicate centimeter accuracy relative to other marks which are
 AA9296.part of the published vertical control network.
 AA9296
 AA9296.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9296.GEOID18 height accuracy estimate available here.
 AA9296
 AA9296.Click photographs - Photos may exist for this station.
 AA9296
 AA9296.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9296
 AA9296.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9296
 AA9296.The ellipsoidal height was determined by GPS observations
 AA9296.and is referenced to NAD 83.
 AA9296
 AA9296. The following values were computed from the NAD 83(2011) position.
 AA9296
 AA9296;                    North         East     Units Scale Factor Converg.
 AA9296;SPC MD       -   146,067.676   406,510.801   MT  0.99995158   +0 02 49.8
 AA9296;SPC MD       -   479,223.70  1,333,694.19   sFT  0.99995158   +0 02 49.8
 AA9296;UTM  18      - 4,316,598.206   333,275.774   MT  0.99994229   -1 12 40.2
 AA9296
 AA9296!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9296!SPC MD       -   1.00000288  x   0.99995158  =   0.99995446
 AA9296!UTM  18      -   1.00000288  x   0.99994229  =   0.99994517
 AA9296
 AA9296_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3327516598(NAD 83)
 AA9296
 AA9296|---------------------------------------------------------------------|
 AA9296| PID    Reference Object                     Distance      Geod. Az  |
 AA9296|                                                           dddmmss.s |
 AA9296| AA9295 CGS A                               299.359 METERS 13927     |
 AA9296|---------------------------------------------------------------------|
 AA9296
 AA9296                          SUPERSEDED SURVEY CONTROL
 AA9296
 AA9296  NAD 83(2007)-  38 58 57.04768(N)    076 55 29.47990(W) AD(2002.00) 0
 AA9296  ELLIP H (02/10/07)  -18.319  (m)                       GP(2002.00)    
 AA9296  ELLIP H (08/19/02)  -18.310  (m)                       GP(       ) 4 2
 AA9296  NAD 83(1991)-  38 58 57.04864(N)    076 55 29.47963(W) AD(       ) 1
 AA9296  ELLIP H (04/02/98)  -18.238  (m)                       GP(       ) 4 2
 AA9296  NAD 83(1993)-  38 58 57.04864(N)    076 55 29.47958(W) AD(       ) 1
 AA9296  ELLIP H (11/30/95)  -18.238  (m)                       GP(       ) 4 2
 AA9296  NAVD 88 (11/30/95)   13.87   (m)  GEOID93  model used  GPS OBS        
 AA9296
 AA9296.Superseded values are not recommended for survey control.
 AA9296
 AA9296.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9296.See file dsdata.pdf to determine how the superseded data were derived.
 AA9296
 AA9296_MARKER: DH = HORIZONTAL CONTROL DISK
 AA9296_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 AA9296_SP_SET: SET IN CONCRETE OF STORM DRAIN
 AA9296_STAMPING: CGS B 1994
 AA9296_MARK LOGO: NGS
 AA9296_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9296_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA9296+STABILITY: SURFACE MOTION
 AA9296_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9296+SATELLITE: SATELLITE OBSERVATIONS - February 18, 1997
 AA9296
 AA9296  HISTORY     - Date     Condition        Report By
 AA9296  HISTORY     - 1994     MONUMENTED       NGS
 AA9296  HISTORY     - 19941024 GOOD             NGS
 AA9296  HISTORY     - 19970218 GOOD             NGS
 AA9296
 AA9296                          STATION DESCRIPTION
 AA9296
 AA9296'DESCRIBED BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 AA9296'STATION IS LOCATED ABOUT 10 MI (16.1 KM) NORTHEAST OF WASHINGTON,
 AA9296'D.C., 2.5 MI (4.0 KM) WEST OF I-95, AND 1 MI (1.6 KM) EAST OF COLLEGE
 AA9296'PARK, AT THE COLLEGE PARK AIRPORT.  MARK IS IN THE NORTHWEST SECTION
 AA9296'OF THE AIRFIELD NEAR RUNWAY END 15.  ACCESS MUST BE GAINED THROUGH MS.
 AA9296'POLLY HILL, MANAGER.  1901 CRPL FRANK S.  SCOTT DRIVE, COLLEGE PARK,
 AA9296'MD 20740.  PHONE 301-864-5844.
 AA9296'
 AA9296'TO REACH FROM THE INTERCHANGE OF I-495/95 (CAPITAL BELTWAY) AND STATE
 AA9296'ROUTE 201 (EXIT 23) , GO SOUTH ON S.R.  201 FOR 0.9 MI (1.4 KM) TO THE
 AA9296'INTERSECTION WITH S.R.  193.  CONTINUE SOUTH ON S.R.  201 FOR 1.4 MI
 AA9296'(2.3 KM) TO CALVERT ROAD ON THE RIGHT.  TURN RIGHT AND GO WEST ON
 AA9296'CALVERT ROAD FOR 0.65 MI (1.05 KM) TO 51ST AVE ON THE RIGHT.  TURN
 AA9296'RIGHT AND GO NORTH ON 51ST AVE FOR 0.15 MI (0.24 KM) TO THE AIRPORT
 AA9296'TERMINAL BUILDING.  FROM THE NORTHEAST SIDE OF THE TERMINAL BUILDING,
 AA9296'GO NORTH-NORTHEAST ACCROSS THE APRON TO THE PARALLEL TAXIWAY.  TURN
 AA9296'NORTH- NORTHWEST ALONG PARALLEL TAXIWAY FOR 0.15 MI (0.24 KM) TO THE
 AA9296'STATION ON THE RIGHT.
 AA9296'
 AA9296'IT IS 152.0 FT (46.3 M) WEST OF THE CENTERLINE END RUNWAY 15, 119.9 FT
 AA9296'(36.5 M) NORTHWEST OF A REIL AT RUNWAY END 15, 72.2 FT (22.0 M)
 AA9296'EAST-NORTHEAST OF THE CENTERLINE OF THE TAXIWAY, AND 3.4 FT (1.0 M)
 AA9296'SOUTHEAST OF THE CENTER OF A METAL DRAIN GRATE.
 AA9296
 AA9296                          STATION RECOVERY (1997)
 AA9296
 AA9296'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (AJL)
 AA9296'STATION IS LOCATED ABOUT 10 MI (16.1 KM) NORTHEAST OF WASHINGTON,
 AA9296'D.C., 2.5 MI (4.0 KM) WEST OF I-95, AND 1 MI (1.6 KM) EAST OF COLLEGE
 AA9296'PARK, AT THE COLLEGE PARK AIRPORT.  MARK IS IN THE NORTHWEST SECTION
 AA9296'OF THE AIRFIELD NEAR RUNWAY END 15.  ACCESS MUST BE GAINED THROUGH MS.
 AA9296'TERERSA ARIAS, MANAGER.  1901 CRPL FRANK S.  SCOTT DRIVE, COLLEGE
 AA9296'PARK, MD 20740.  PHONE 301-864-5844.  TO REACH FROM THE INTERCHANGE OF
 AA9296'I-495/95 (CAPITAL BELTWAY) AND STATE ROUTE 201 (EXIT 23) , GO SOUTH ON
 AA9296'S.R.  201 FOR 0.9 MI (1.4 KM) TO THE INTERSECTION WITH S.R.  193.
 AA9296'CONTINUE SOUTH ON S.R.  201 FOR 1.4 MI (2.3 KM) TO CALVERT ROAD ON THE
 AA9296'RIGHT.  TURN RIGHT AND GO WEST ON CALVERT ROAD FOR 0.65 MI (1.05 KM)
 AA9296'TO 51ST AVE ON THE RIGHT.  TURN RIGHT AND GO NORTH ON 51ST AVE FOR
 AA9296'0.15 MI (0.24 KM) TO THE AIRPORT TERMINAL BUILDING.  FROM THE
 AA9296'NORTHEAST SIDE OF THE TERMINAL BUILDING, GO NORTH-NORTHEAST ACCROSS
 AA9296'THE APRON TO THE PARALLEL TAXIWAY.  TURN NORTH- NORTHWEST ALONG
 AA9296'PARALLEL TAXIWAY FOR 0.15 MI (0.24 KM) TO THE STATION ON THE RIGHT.
 AA9296'THE STATION IS A HORIZONTAL CONTROL DISK SET IN THE CONCRETE BASE OF A
 AA9296'STORM DRAIN.  IT IS 152.0 FT (46.3 M) WEST OF THE CENTERLINE END
 AA9296'RUNWAY 15, 119.9 FT (36.5 M) NORTHWEST OF A REIL AT RUNWAY END 15,
 AA9296'72.2 FT (22.0 M) EAST-NORTHEAST OF THE CENTERLINE OF THE TAXIWAY, AND
 AA9296'3.4 FT (1.0 M) SOUTHEAST OF THE CENTER OF A METAL DRAIN GRATE.  THIS
 AA9296'STATION IS DESIGNATED AS A SACS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9294 ***********************************************************************
 AA9294  SACS        -  This is a Secondary Airport Control Station.
 AA9294  DESIGNATION -  CGS C
 AA9294  PID         -  AA9294
 AA9294  STATE/COUNTY-  MD/PRINCE GEORGES
 AA9294  COUNTRY     -  US
 AA9294  USGS QUAD   -  WASHINGTON EAST (2016)
 AA9294
 AA9294                         *CURRENT SURVEY CONTROL
 AA9294  ______________________________________________________________________
 AA9294* NAD 83(2011) POSITION- 38 58 41.40181(N) 076 55 11.50783(W)   ADJUSTED
 AA9294* NAD 83(2011) ELLIP HT-   -20.707 (meters)        (06/27/12)   ADJUSTED
 AA9294* NAD 83(2011) EPOCH   -  2010.00
 AA9294* NAVD 88 ORTHO HEIGHT -    11.50  (meters)       37.7   (feet) GPS OBS
 AA9294  ______________________________________________________________________
 AA9294  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AA9294  GEOID HEIGHT    -        -32.171 (meters)                     GEOID96
 AA9294  GEOID HEIGHT    -        -32.181 (meters)                     GEOID18
 AA9294  NAD 83(2011) X  -  1,123,610.136 (meters)                     COMP
 AA9294  NAD 83(2011) Y  - -4,836,020.978 (meters)                     COMP
 AA9294  NAD 83(2011) Z  -  3,990,420.078 (meters)                     COMP
 AA9294  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 AA9294
 AA9294  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9294  Standards:
 AA9294         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9294            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9294  -------------------------------------------------------------------
 AA9294  NETWORK    1.61   3.08           0.70   0.61   1.57      0.16604699
 AA9294  -------------------------------------------------------------------
 AA9294  Click here for local accuracies and other accuracy information.
 AA9294
 AA9294.This mark is at College Park Airport (CGS)
 AA9294
 AA9294.The horizontal coordinates were established by GPS observations
 AA9294.and adjusted by the National Geodetic Survey in June 2012.
 AA9294
 AA9294.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9294.been affixed to the stable North American tectonic plate. See 
 AA9294.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9294
 AA9294.The horizontal coordinates are valid at the epoch date displayed above
 AA9294.which is a decimal equivalence of Year/Month/Day.
 AA9294
 AA9294.The orthometric height was determined by GPS observations and a
 AA9294.high-resolution geoid model.
 AA9294
 AA9294.GPS derived orthometric heights for airport stations designated as
 AA9294.PACS or SACS are published to 2 decimal places.  This maintains
 AA9294.centimeter relative accuracy between the PACS and SACS.  It does
 AA9294.not indicate centimeter accuracy relative to other marks which are
 AA9294.part of the published vertical control network.
 AA9294
 AA9294.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9294.GEOID18 height accuracy estimate available here.
 AA9294
 AA9294.Click photographs - Photos may exist for this station.
 AA9294
 AA9294.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9294
 AA9294.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9294
 AA9294.The ellipsoidal height was determined by GPS observations
 AA9294.and is referenced to NAD 83.
 AA9294
 AA9294. The following values were computed from the NAD 83(2011) position.
 AA9294
 AA9294;                    North         East     Units Scale Factor Converg.
 AA9294;SPC MD       -   145,585.595   406,943.750   MT  0.99995144   +0 03 01.1
 AA9294;SPC MD       -   477,642.07  1,335,114.62   sFT  0.99995144   +0 03 01.1
 AA9294;UTM  18      - 4,316,106.739   333,698.028   MT  0.99994056   -1 12 28.5
 AA9294
 AA9294!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9294!SPC MD       -   1.00000325  x   0.99995144  =   0.99995469
 AA9294!UTM  18      -   1.00000325  x   0.99994056  =   0.99994381
 AA9294
 AA9294_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3369816106(NAD 83)
 AA9294
 AA9294|---------------------------------------------------------------------|
 AA9294| PID    Reference Object                     Distance      Geod. Az  |
 AA9294|                                                           dddmmss.s |
 AA9294| AA9295 CGS A                               348.779 METERS 31659     |
 AA9294|---------------------------------------------------------------------|
 AA9294
 AA9294                          SUPERSEDED SURVEY CONTROL
 AA9294
 AA9294  NAD 83(2007)-  38 58 41.40204(N)    076 55 11.50866(W) AD(2002.00) 0
 AA9294  ELLIP H (02/10/07)  -20.692  (m)                       GP(2002.00)    
 AA9294  ELLIP H (08/19/02)  -20.681  (m)                       GP(       ) 4 2
 AA9294  NAD 83(1991)-  38 58 41.40304(N)    076 55 11.50850(W) AD(       ) 1
 AA9294  ELLIP H (04/02/98)  -20.609  (m)                       GP(       ) 4 2
 AA9294  NAD 83(1993)-  38 58 41.40304(N)    076 55 11.50845(W) AD(       ) 1
 AA9294  ELLIP H (11/30/95)  -20.609  (m)                       GP(       ) 4 2
 AA9294  NAVD 88 (11/30/95)   11.51   (m)  GEOID93  model used  GPS OBS        
 AA9294
 AA9294.Superseded values are not recommended for survey control.
 AA9294
 AA9294.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9294.See file dsdata.pdf to determine how the superseded data were derived.
 AA9294
 AA9294_MARKER: DH = HORIZONTAL CONTROL DISK
 AA9294_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 AA9294_SP_SET: SET IN CONCRETE OF STORM DRAIN
 AA9294_STAMPING: CGS C 1994
 AA9294_MARK LOGO: NGS
 AA9294_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9294_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA9294+STABILITY: SURFACE MOTION
 AA9294_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9294+SATELLITE: SATELLITE OBSERVATIONS - February 18, 1997
 AA9294
 AA9294  HISTORY     - Date     Condition        Report By
 AA9294  HISTORY     - 1994     MONUMENTED       NGS
 AA9294  HISTORY     - 19941024 GOOD             NGS
 AA9294  HISTORY     - 19970218 GOOD             NGS
 AA9294
 AA9294                          STATION DESCRIPTION
 AA9294
 AA9294'DESCRIBED BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 AA9294'STATION IS LOCATED ABOUT 10 MI (16.1 KM) NORTHEAST OF WASHINGTON,
 AA9294'D.C., 2.5 MI (4.0 KM) WEST OF I-95, AND 1 MI (1.6 KM) EAST OF COLLEGE
 AA9294'PARK, AT THE COLLEGE PARK AIRPORT.  MARK IS IN THE SOUTHEAST SECTION
 AA9294'OF THE AIRFIELD NEAR RUNWAY END 33.  ACCESS MUST BE GAINED THROUGH MS.
 AA9294'POLLY HILL, MANAGER.  1901 CRPL FRANK S.  SCOTT DRIVE, COLLEGE PARK,
 AA9294'MD 20740.  PHONE 301-864-5844.
 AA9294'
 AA9294'TO REACH FROM THE INTERCHANGE OF I-495/95 (CAPITAL BELTWAY) AND STATE
 AA9294'ROUTE 201 (EXIT 23) , GO SOUTH ON S.R.  201 FOR 0.9 MI (1.4 KM) TO THE
 AA9294'INTERSECTION WITH S.R.  193.  CONTINUE SOUTH ON S.R.  201 FOR 1.4 MI
 AA9294'(2.3 KM) TO CALVERT ROAD ON THE RIGHT.  TURN RIGHT AND GO WEST ON
 AA9294'CALVERT ROAD FOR 0.65 MI (1.05 KM) TO 51ST AVE ON THE RIGHT.  TURN
 AA9294'RIGHT AND GO NORTH ON 51ST AVE FOR 0.15 MI (0.24 KM) TO THE AIRPORT
 AA9294'TERMINAL BUILDING.  FROM THE NORTHEAST SIDE OF THE TERMINAL BUILDING,
 AA9294'GO SOUTHEAST ACCROSS THE APRON TO THE PARALLEL TAXIWAY.  TURN SOUTH-
 AA9294'SOUTHEAST ALONG PARALLEL TAXIWAY FOR 0.15 MI (0.24 KM) TO THE STATION
 AA9294'ON THE LEFT.
 AA9294'
 AA9294'IT IS 74.4 FT (22.7 M) SOUTHWEST OF THE CENTERLINE END RUNWAY 33 AT
 AA9294'THE DISPLACED THRESHOLD, 18.0 FT (5.5 M) SOUTHEAST OF A REIL, AND 7.7
 AA9294'FT (2.3 M) NORTHWEST OF THE CENTER OF A METAL DRAIN GRATE.
 AA9294
 AA9294                          STATION RECOVERY (1997)
 AA9294
 AA9294'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (AJL)
 AA9294'STATION IS LOCATED ABOUT 10 MI (16.1 KM) NORTHEAST OF WASHINGTON,
 AA9294'D.C., 2.5 MI (4.0 KM) WEST OF I-95, AND 1 MI (1.6 KM) EAST OF COLLEGE
 AA9294'PARK, AT THE COLLEGE PARK AIRPORT.  MARK IS IN THE SOUTHEAST SECTION
 AA9294'OF THE AIRFIELD NEAR RUNWAY END 33.  ACCESS MUST BE GAINED THROUGH MS.
 AA9294'POLLY HILL, MANAGER.  1901 CRPL FRANK S.  SCOTT DRIVE, COLLEGE PARK,
 AA9294'MD 20740.  PHONE 301-864-5844.  TO REACH FROM THE INTERCHANGE OF
 AA9294'I-495/95 (CAPITAL BELTWAY) AND STATE ROUTE 201 (EXIT 23) , GO SOUTH ON
 AA9294'S.R.  201 FOR 0.9 MI (1.4 KM) TO THE INTERSECTION WITH S.R. 193.
 AA9294'CONTINUE SOUTH ON S.R.  201 FOR 1.4 MI (2.3 KM) TO CALVERT ROAD ON THE
 AA9294'RIGHT.  TURN RIGHT AND GO WEST ON CALVERT ROAD FOR 0.65 MI (1.05 KM)
 AA9294'TO 51ST AVE ON THE RIGHT.  TURN RIGHT AND GO NORTH ON 51ST AVE FOR
 AA9294'0.15 MI (0.24 KM) TO THE AIRPORT TERMINAL BUILDING.  FROM THE
 AA9294'NORTHEAST SIDE OF THE TERMINAL BUILDING, GO SOUTHEAST ACCROSS THE
 AA9294'APRON TO THE PARALLEL TAXIWAY.  TURN SOUTH- SOUTHEAST ALONG PARALLEL
 AA9294'TAXIWAY FOR 0.15 MI (0.24 KM) TO THE STATION ON THE LEFT.  THE STATION
 AA9294'IS A HORIZONTAL CONTROL DISK SET IN THE CONCRETE BASE OF STORM DRAIN.
 AA9294'IT IS 74.4 FT (22.7 M) SOUTHWEST OF THE CENTERLINE END RUNWAY 33 AT
 AA9294'THE DISPLACED THRESHOLD, 18.0 FT (5.5 M) SOUTHEAST OF A REIL, AND 7.7
 AA9294'FT (2.3 M) NORTHWEST OF THE CENTER OF A METAL DRAIN GRATE.  THIS
 AA9294'STATION IS DESIGNATED AS A SACS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6862 ***********************************************************************
 HV6862  DESIGNATION -  CHADWICK 1908
 HV6862  PID         -  HV6862
 HV6862  STATE/COUNTY-  MD/ST MARYS
 HV6862  COUNTRY     -  US
 HV6862  USGS QUAD   -  PINEY POINT (2016)
 HV6862
 HV6862                         *CURRENT SURVEY CONTROL
 HV6862  ______________________________________________________________________
 HV6862* NAD 83(1993) POSITION- 38 09 49.28205(N) 076 30 53.64697(W)   ADJUSTED
 HV6862* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6862  ______________________________________________________________________
 HV6862  GEOID HEIGHT    -        -34.529 (meters)                     GEOID18
 HV6862  LAPLACE CORR    -         -5.96  (seconds)                    DEFLEC18
 HV6862  HORZ ORDER      -  THIRD
 HV6862
 HV6862.The horizontal coordinates were established by classical geodetic methods
 HV6862.and adjusted by the National Geodetic Survey in November 1994.
 HV6862
 HV6862.The orthometric height was scaled from a topographic map.
 HV6862
 HV6862.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6862.GEOID18 height accuracy estimate available here.
 HV6862
 HV6862.Click photographs - Photos may exist for this station.
 HV6862
 HV6862.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6862
 HV6862. The following values were computed from the NAD 83(1993) position.
 HV6862
 HV6862;                    North         East     Units Scale Factor Converg.
 HV6862;SPC MD       -    55,285.029   442,513.403   MT  1.00002651   +0 18 16.1
 HV6862;SPC MD       -   181,380.97  1,451,812.72   sFT  1.00002651   +0 18 16.1
 HV6862;SPC VA N     - 2,057,049.203 3,673,950.668   MT  0.99997955   +1 14 20.2
 HV6862;SPC VA N     - 6,748,835.59 12,053,619.82   sFT  0.99997955   +1 14 20.2
 HV6862;SPC VA S     - 1,204,964.214 3,673,962.250   MT  1.00004190   +1 12 17.3
 HV6862;SPC VA S     - 3,953,286.76 12,053,657.82   sFT  1.00004190   +1 12 17.3
 HV6862;UTM  18      - 4,225,061.196   367,288.146   MT  0.99981691   -0 56 10.4
 HV6862
 HV6862!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6862!SPC MD       -   1.00000546  x   1.00002651  =   1.00003197
 HV6862!SPC VA N     -   1.00000546  x   0.99997955  =   0.99998501
 HV6862!SPC VA S     -   1.00000546  x   1.00004190  =   1.00004736
 HV6862!UTM  18      -   1.00000546  x   0.99981691  =   0.99982237
 HV6862
 HV6862_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6728825061(NAD 83)
 HV6862
 HV6862                          SUPERSEDED SURVEY CONTROL
 HV6862
 HV6862  NAD 83(1991)-  38 09 49.28103(N)    076 30 53.65033(W) AD(       ) 3
 HV6862  NAD 83(1986)-  38 09 49.28211(N)    076 30 53.66328(W) AD(       ) 3
 HV6862  NAD 27      -  38 09 48.89500(N)    076 30 54.92100(W) AD(       ) 3
 HV6862  USSD        -  38 09 49.28200(N)    076 30 54.63200(W) AD(       ) 3
 HV6862
 HV6862.Superseded values are not recommended for survey control.
 HV6862
 HV6862.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6862.See file dsdata.pdf to determine how the superseded data were derived.
 HV6862
 HV6862_MARKER: H = DRILL HOLE
 HV6862_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6862_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6862+STABILITY: SURFACE MOTION
 HV6862
 HV6862  HISTORY     - Date     Condition        Report By
 HV6862  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6862  HISTORY     - 1942     GOOD             CGS
 HV6862  HISTORY     - 1958     GOOD             CGS
 HV6862  HISTORY     - 1989     GOOD             MDDNR
 HV6862
 HV6862                          STATION DESCRIPTION
 HV6862
 HV6862'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6862'STATION IS ON THE NORTHEASTERN SHORE OF UPPER ST. GEORGE RIVER, ON
 HV6862'A PROMINENT POINT BETWEEN A COVE AND A CREEK, ABOUT 2 MILES NNW OF
 HV6862'ST. GEORGE ISLAND STRAITS, AT EDGE OF AN OLD FIELD, ABOUT 2 FEET
 HV6862'ABOVE HIGH WATER, 9 YARDS NE OF SHORE, 18 YARDS NW OF EXTREME END
 HV6862'OF POINT, 80 YARDS SSE OF A 2 1/2-STORY HOUSE, AND 75 YARDS FROM
 HV6862'SEVERAL APPLE TREES.
 HV6862'
 HV6862'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6862'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6862'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6862'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6862'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--S
 HV6862'PEAK OF BARN, 3/4 MILE, S 3 DEG 0 MIN W.  CHIMNEY OF HOUSE, 3/4
 HV6862'MILE, S 15 DEG 52 MIN W.  CHIMNEY OF HOUSE ON OPPOSITE SHORE, 1/2
 HV6862'MILE, S 19 DEG 25 MIN W.  CHIMNEY OF HOUSE AMONG TREES ON OPPOSITE
 HV6862'SHORE, 1/2 MILE, S 24 DEG 46 MIN W.  SW PEAK OF BARN, 1/2 MILE, S
 HV6862'28 DEG 28 MIN W.  CHIMNEY OF HOUSE NEAR WOODS, 3/4 MILE, S 77 DEG
 HV6862'4 MIN W.  NAIL IN BLAZE IN LOCUST TREE, 3.82 METERS (12.53 FEET),
 HV6862'N 53 DEG 28 MIN W.  NEAR CORNER OF HOUSE, 81 YARDS, N 19 DEG 38
 HV6862'MIN W.  S CORNER OF HOUSE, 1/2 MILE, N 20 DEG 53 MIN E.
 HV6862
 HV6862                          STATION RECOVERY (1942)
 HV6862
 HV6862'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6862'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HV6862'
 HV6862'(1) THE STATION IS LOCATED AT THE EDGE OF A PASTURE, NOT AT THE
 HV6862'EDGE OF AN OLD FIELD.
 HV6862'
 HV6862'(2) 33 FEET NW OF EXTREME END OF POINT, NOT 18 YARDS.
 HV6862'
 HV6862'(3) 162 FEET SE OF AN APPLE TREE, NOT 75 YARDS FROM SEVERAL APPLE
 HV6862'TREES, ONLY ONE REMAINS.
 HV6862'
 HV6862'(4) THE MONUMENT PROJECTS 2 INCHES ABOVE THE GROUND, NOT 4 INCHES.
 HV6862'
 HV6862'(5) DELETE NAIL IN BLAZE IN LOCUST.  THIS TREE HAS BEEN DESTROYED.
 HV6862'
 HV6862'THE STATION IS LOCATED ABOUT 2 MILES NNW OF ST. GEORGE ISLAND
 HV6862'STRAITS AND ABOUT 2.3 MILES E OF TALL TIMBERS ON THE NE SHORE OF
 HV6862'UPPER ST. GEORGE RIVER, ON A PROMINENT POINT BETWEEN A COVE AND A
 HV6862'CREEK, IN A PASTURE, ABOUT 2 FEET ABOVE HIGH WATER, IN A CLUMP OF
 HV6862'SMALL LOCUST TREES, ABOUT 240 FEET SW OF A 2 1/2-STORY WHITE FRAME
 HV6862'HOUSE, ABOUT 162 FEET SE OF AN APPLE TREE, ABOUT 25 FEET NE OF
 HV6862'SHORE, ABOUT 33 FEET NW OF EXTREME END OF POINT, AND ON THE
 HV6862'PROPERTY OF W.E. VAN DIKE.
 HV6862'
 HV6862'THE STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6862'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH
 HV6862'SQUARE CONCRETE MONUMENT 2 FEET LONG, WHICH PROJECTS 2 INCHES
 HV6862'ABOVE THE SURFACE OF THE GROUND.  THE LETTERS M.S.F.C. AND
 HV6862'U.S.C.S. ARE COUNTERSUNK IN THE TOP OF MONUMENT.  THE STATION IS
 HV6862'IN GOOD CONDITION.
 HV6862
 HV6862                          STATION RECOVERY (1958)
 HV6862
 HV6862'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6862'THE STATION MARK WAS RECOVERED IN GOOD CONDITION.  THE 1942
 HV6862'DESCRIPTION IS ADEQUATE WITH THE FOLLOWING ADDITION--
 HV6862'
 HV6862'ADD, 19 FEET SW OF WESTERNMOST 8-INCH LOCUST TREE AND 83 FEET S OF
 HV6862'THE WESTERNMOST END OF A RAIL FENCE.
 HV6862
 HV6862                          STATION RECOVERY (1989)
 HV6862
 HV6862'RECOVERY NOTE BY MD DEPT OF NAT RES 1989 (LW)
 HV6862'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7187 ***********************************************************************
 HV7187  DESIGNATION -  CHALK
 HV7187  PID         -  HV7187
 HV7187  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7187  COUNTRY     -  US
 HV7187  USGS QUAD   -  DEALE (2016)
 HV7187
 HV7187                         *CURRENT SURVEY CONTROL
 HV7187  ______________________________________________________________________
 HV7187* NAD 83(1993) POSITION- 38 50 15.58284(N) 076 32 14.62683(W)   ADJUSTED
 HV7187* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7187  ______________________________________________________________________
 HV7187  GEOID HEIGHT    -        -33.469 (meters)                     GEOID18
 HV7187  LAPLACE CORR    -         -3.65  (seconds)                    DEFLEC18
 HV7187  HORZ ORDER      -  THIRD
 HV7187
 HV7187.The horizontal coordinates were established by classical geodetic methods
 HV7187.and adjusted by the National Geodetic Survey in November 1994.
 HV7187
 HV7187.The orthometric height was scaled from a topographic map.
 HV7187
 HV7187.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7187.GEOID18 height accuracy estimate available here.
 HV7187
 HV7187.Click photographs - Photos may exist for this station.
 HV7187
 HV7187.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7187
 HV7187. The following values were computed from the NAD 83(1993) position.
 HV7187
 HV7187;                    North         East     Units Scale Factor Converg.
 HV7187;SPC MD       -   130,087.073   440,162.924   MT  0.99995007   +0 17 25.2
 HV7187;SPC MD       -   426,794.01  1,444,101.19   sFT  0.99995007   +0 17 25.2
 HV7187;UTM  18      - 4,299,884.801   366,567.032   MT  0.99981924   -0 57 51.4
 HV7187
 HV7187!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7187!SPC MD       -   1.00000514  x   0.99995007  =   0.99995521
 HV7187!UTM  18      -   1.00000514  x   0.99981924  =   0.99982437
 HV7187
 HV7187:                Primary Azimuth Mark                     Grid Az
 HV7187:SPC MD       -  COUNALLOR                                357 38 31.7
 HV7187:UTM  18      -  COUNALLOR                                358 53 48.3
 HV7187
 HV7187_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6656799884(NAD 83)
 HV7187
 HV7187|---------------------------------------------------------------------|
 HV7187| PID    Reference Object                     Distance      Geod. Az  |
 HV7187|                                                           dddmmss.s |
 HV7187| CX2200 CHALK RP                              8.150 METERS 25134     |
 HV7187| HV7192 COUNALLOR                           APPROX. 0.7 KM 3575556.9 |
 HV7187|---------------------------------------------------------------------|
 HV7187
 HV7187                          SUPERSEDED SURVEY CONTROL
 HV7187
 HV7187  NAD 83(1991)-  38 50 15.58285(N)    076 32 14.62683(W) AD(       ) 3
 HV7187  NAD 83(1986)-  38 50 15.58023(N)    076 32 14.63889(W) AD(       ) 3
 HV7187  NAD 27      -  38 50 15.19000(N)    076 32 15.78100(W) AD(       ) 3
 HV7187  USSD        -  38 50 15.55100(N)    076 32 15.59500(W) AD(       ) 3
 HV7187
 HV7187.Superseded values are not recommended for survey control.
 HV7187
 HV7187.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7187.See file dsdata.pdf to determine how the superseded data were derived.
 HV7187
 HV7187_MARKER: N = NAIL
 HV7187_SETTING: 0 = UNSPECIFIED SETTING
 HV7187
 HV7187  HISTORY     - Date     Condition        Report By
 HV7187  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7187  HISTORY     - 1957     MARK NOT FOUND   USGS
 HV7187  HISTORY     - 20031001 MARK NOT FOUND   USPSQD
 HV7187
 HV7187                          STATION DESCRIPTION
 HV7187
 HV7187'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7187'ON THE SE SIDE OF UPPER WEST RIVER, ON W SIDE OF CHALK POINT,
 HV7187'ABOUT 1/4 MILE SE OF GALESVILLE, 200 YARDS E OF CHALK POINT
 HV7187'(STEAMBOAT) WHARF, AND 4 FEET ABOVE AND 27 YARDS BACK FROM
 HV7187'HIGH-WATER MARK.
 HV7187'
 HV7187'STATION MARK IS NAIL IN PINE STUB FLUSH WITH GROUND.
 HV7187'
 HV7187'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7187'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7187'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7187'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7187'IS 8.15 METERS (26.74 FEET) FROM STATION IN BEARING S 71 DEG 34
 HV7187'MIN W. DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV7187'REFERENCE ARE AS FOLLOWS--CHIMNEY ON SMALL YELLOW HOUSE, 100
 HV7187'YARDS, S 86 DEG 18 MIN W.  CHIMNEY ON GALESVILLE WHARF HOUSE, 300
 HV7187'YARDS, N 25 DEG 58 MIN W.  LERCHS WINDMILL, 1/2 MILE, N 74 DEG 47
 HV7187'MIN E.  NAIL IN BLAZE IN TWIN LOCUST TREE, 7.32 METERS (24.02
 HV7187'FEET), S 80 DEG 37 MIN E. CHIMNEY ON YELLOW HOUSE ON OPPOSITE
 HV7187'SHORE, 3/4 MILE, S 63 DEG 14 MIN E.  E CHIMNEY ON MR. HYDES HOUSE,
 HV7187'1/4 MILE, S 5 DEG 50 MIN E.
 HV7187
 HV7187                          STATION RECOVERY (1957)
 HV7187
 HV7187'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV7187'STATION AND THE M.S.F.C. REFERENCE MARK WERE NOT FOUND AND ARE
 HV7187'CONSIDERED DESTROYED.  A HOUSE HAS BEEN BUILT AT THE APPROXIMATE
 HV7187'LOCATION OF THE STATION.
 HV7187
 HV7187                          STATION RECOVERY (2003)
 HV7187
 HV7187'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7187'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7181 ***********************************************************************
 HV7181  DESIGNATION -  CHALK 2
 HV7181  PID         -  HV7181
 HV7181  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7181  COUNTRY     -  US
 HV7181  USGS QUAD   -  DEALE (2016)
 HV7181
 HV7181                         *CURRENT SURVEY CONTROL
 HV7181  ______________________________________________________________________
 HV7181* NAD 83(1993) POSITION- 38 50 16.27854(N) 076 32 21.27012(W)   ADJUSTED
 HV7181* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7181  ______________________________________________________________________
 HV7181  GEOID HEIGHT    -        -33.465 (meters)                     GEOID18
 HV7181  LAPLACE CORR    -         -3.69  (seconds)                    DEFLEC18
 HV7181  HORZ ORDER      -  THIRD
 HV7181
 HV7181.The horizontal coordinates were established by classical geodetic methods
 HV7181.and adjusted by the National Geodetic Survey in November 1994.
 HV7181
 HV7181.The orthometric height was scaled from a topographic map.
 HV7181
 HV7181.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7181.GEOID18 height accuracy estimate available here.
 HV7181
 HV7181.Click photographs - Photos may exist for this station.
 HV7181
 HV7181.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7181
 HV7181. The following values were computed from the NAD 83(1993) position.
 HV7181
 HV7181;                    North         East     Units Scale Factor Converg.
 HV7181;SPC MD       -   130,107.714   440,002.605   MT  0.99995007   +0 17 21.1
 HV7181;SPC MD       -   426,861.73  1,443,575.21   sFT  0.99995007   +0 17 21.1
 HV7181;UTM  18      - 4,299,908.944   366,407.223   MT  0.99981977   -0 57 55.5
 HV7181
 HV7181!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7181!SPC MD       -   1.00000513  x   0.99995007  =   0.99995520
 HV7181!UTM  18      -   1.00000513  x   0.99981977  =   0.99982490
 HV7181
 HV7181:                Primary Azimuth Mark                     Grid Az
 HV7181:SPC MD       -  GALE                                     009 39 41.1
 HV7181:UTM  18      -  GALE                                     010 54 57.7
 HV7181
 HV7181_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6640799908(NAD 83)
 HV7181
 HV7181|---------------------------------------------------------------------|
 HV7181| PID    Reference Object                     Distance      Geod. Az  |
 HV7181|                                                           dddmmss.s |
 HV7181| HV7191 GALE                                APPROX. 0.7 KM 0095702.2 |
 HV7181| CX2199 CHALK 2 RM                            9.416 METERS 14000     |
 HV7181| HV7180 CHALK 3                               5.433 METERS 29329     |
 HV7181|---------------------------------------------------------------------|
 HV7181
 HV7181                          SUPERSEDED SURVEY CONTROL
 HV7181
 HV7181  NAD 83(1986)-  38 50 16.27500(N)    076 32 21.28173(W) AD(       ) 3
 HV7181  NAD 27      -  38 50 15.86800(N)    076 32 22.42900(W) AD(       ) 3
 HV7181
 HV7181.Superseded values are not recommended for survey control.
 HV7181
 HV7181.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7181.See file dsdata.pdf to determine how the superseded data were derived.
 HV7181
 HV7181_MARKER: DS = TRIANGULATION STATION DISK
 HV7181_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7181
 HV7181  HISTORY     - Date     Condition        Report By
 HV7181  HISTORY     - 1933     MONUMENTED       CGS
 HV7181  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV7181
 HV7181                          STATION DESCRIPTION
 HV7181
 HV7181'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7181'STATION IS ON CHALK POINT AT THE S SIDE OF WEST RIVER NEAR
 HV7181'GALESVILLE.  STATION IS IN AN OPEN SPACE, 5 YARDS S OF HIGH-WATER
 HV7181'LINE, 15 YARDS E OF INSHORE END OF OLD STEAMBOAT WHARF, 25 YARDS
 HV7181'SSW OF SMALL HOUSE.  THE BEACH AT THIS POINT IS COVERED WITH
 HV7181'ROCKS TO SERVE AS A BREAKWATER.
 HV7181'
 HV7181'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7181'CONCRETE AS DESCRIBED.
 HV7181
 HV7181                          STATION RECOVERY (1942)
 HV7181
 HV7181'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV7181'THE STATION AND ONE REFERENCE MARK WERE RECOVERED AS DESCRIBED.  A
 HV7181'HOUSE WAS BEING BUILT OVER THIS SPOT AND THE DIGGING OF THE
 HV7181'BASEMENT WOULD DESTROY THE MARKS.  THE MARKS WERE MOVED BY MYSELF
 HV7181'TO A NEW POSITION A FEW FEET AWAY AND RE-LOCATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7180 ***********************************************************************
 HV7180  DESIGNATION -  CHALK 3
 HV7180  PID         -  HV7180
 HV7180  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7180  COUNTRY     -  US
 HV7180  USGS QUAD   -  DEALE (2016)
 HV7180
 HV7180                         *CURRENT SURVEY CONTROL
 HV7180  ______________________________________________________________________
 HV7180* NAD 83(1993) POSITION- 38 50 16.34875(N) 076 32 21.47673(W)   ADJUSTED
 HV7180* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7180  ______________________________________________________________________
 HV7180  GEOID HEIGHT    -        -33.465 (meters)                     GEOID18
 HV7180  LAPLACE CORR    -         -3.69  (seconds)                    DEFLEC18
 HV7180  HORZ ORDER      -  THIRD
 HV7180
 HV7180.The horizontal coordinates were established by classical geodetic methods
 HV7180.and adjusted by the National Geodetic Survey in November 1994.
 HV7180
 HV7180.The orthometric height was scaled from a topographic map.
 HV7180
 HV7180.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7180.GEOID18 height accuracy estimate available here.
 HV7180
 HV7180.Click photographs - Photos may exist for this station.
 HV7180
 HV7180.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7180
 HV7180. The following values were computed from the NAD 83(1993) position.
 HV7180
 HV7180;                    North         East     Units Scale Factor Converg.
 HV7180;SPC MD       -   130,109.854   439,997.611   MT  0.99995007   +0 17 20.9
 HV7180;SPC MD       -   426,868.75  1,443,558.83   sFT  0.99995007   +0 17 20.9
 HV7180;UTM  18      - 4,299,911.193   366,402.279   MT  0.99981978   -0 57 55.7
 HV7180
 HV7180!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7180!SPC MD       -   1.00000513  x   0.99995007  =   0.99995520
 HV7180!UTM  18      -   1.00000513  x   0.99981978  =   0.99982491
 HV7180
 HV7180_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6640299911(NAD 83)
 HV7180
 HV7180                          SUPERSEDED SURVEY CONTROL
 HV7180
 HV7180  NAD 83(1986)-  38 50 16.34522(N)    076 32 21.48833(W) AD(       ) 3
 HV7180  NAD 27      -  38 50 15.93800(N)    076 32 22.63600(W) AD(       ) 3
 HV7180
 HV7180.Superseded values are not recommended for survey control.
 HV7180
 HV7180.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7180.See file dsdata.pdf to determine how the superseded data were derived.
 HV7180
 HV7180_MARKER: Z = SEE DESCRIPTION
 HV7180_SETTING: 0 = UNSPECIFIED SETTING
 HV7180_STAMPING: CHALK 3 1942
 HV7180_MARK LOGO: CGS
 HV7180_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7180
 HV7180  HISTORY     - Date     Condition        Report By
 HV7180  HISTORY     - 1942     MONUMENTED       CGS
 HV7180  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7180  HISTORY     - 20031002 MARK NOT FOUND   USPSQD
 HV7180
 HV7180                          STATION DESCRIPTION
 HV7180
 HV7180'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV7180'THE STATION IS AT CHALK POINT AT THE W END OF NORTH SHORE DRIVE ON
 HV7180'LOT NO.1 WHICH IS THE PROPERTY OF MR. GEORGE C. HEIDER.  THE MARK
 HV7180'IS 22.8 FEET SW OF AN OLD OAK TREE, 28 FEET S OF A PROPOSED
 HV7180'BREAKWATER, ABOUT 10 FEET BACK OF THE PRESENT BANK, AND 24.4 FEET
 HV7180'NW OF THE NW CORNER OF MR. HEIDERS PROPOSED HOUSE.  THE
 HV7180'CONSTRUCTION CREW WERE BUILDING THE BASEMENT OF THE HOUSE AT TIME
 HV7180'OF DESCRIBING THIS STATION.  THE MARK IS FLUSH WITH THE GROUND
 HV7180'AND IS STAMPED CHALK 2 1933, WHILE IN REALITY IT IS NOW CHALK 3
 HV7180'1942.  A NEW DISK AND CONCRETE FOR NEW MARK WAS NOT AVAILABLE AND
 HV7180'SO THE OLD MARKS WERE DUG UP AND MOVED TO THE NEW POSITION IN
 HV7180'ORDER TO PRESERVE THIS STATION AS THE CONSTRUCTION CREW FOR THE
 HV7180'NEW HOUSE WOULD HAVE DESTROYED THE OLD MARKS IN ABOUT 1/2 HOUR.
 HV7180'THE OLD REFERENCE MARK WAS MOVED TO THE NEW POSITION AND WAS
 HV7180'INADVERTENTLY POINTED WEST INSTEAD OF NORTH TO THE STATION.  THE
 HV7180'DISK IS STAMPED CHALK 2 1933 BUT IS THE REFERENCE MARK FOR CHALK 3
 HV7180'1942.  NO ADDITIONAL REFERENCE MARK COULD BE ESTABLISHED BECAUSE
 HV7180'OF THE LACK OF A DISK AND MATERIAL AND THE STAMPING COULD NOT BE
 HV7180'CHANGED FOR THE SAME REASON.
 HV7180
 HV7180                          STATION RECOVERY (1960)
 HV7180
 HV7180'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7180'STATION WAS NOT FOUND AFTER AN HOURS SEARCH BY 2 MEN.  THERE WAS
 HV7180'ONE REFERENCE MARK FOUND, STAMPED CHALK 1933.  HOWEVER, THIS
 HV7180'REFERENCE MARK DOES NOT AGREE WITH THE DESCRIPTION BY G.W.L. IN
 HV7180'1942.  THE ARROW OF THE MARK WAS POINTED DUE E. INSTEAD OF DUE
 HV7180'WEST.  IT IS RECOMMENDED THIS STATION BE CLASSED AS LOST.
 HV7180
 HV7180                          STATION RECOVERY (2003)
 HV7180
 HV7180'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7180'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7349 ***********************************************************************
 HV7349  DESIGNATION -  CHALK POINT PEPCO MICROWAVE
 HV7349  PID         -  HV7349
 HV7349  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7349  COUNTRY     -  US
 HV7349  USGS QUAD   -  BENEDICT (2016)
 HV7349
 HV7349                         *CURRENT SURVEY CONTROL
 HV7349  ______________________________________________________________________
 HV7349* NAD 83(1993) POSITION- 38 33 33.43389(N) 076 41 16.89708(W)   ADJUSTED
 HV7349  ______________________________________________________________________
 HV7349  GEOID HEIGHT    -        -33.589 (meters)                     GEOID18
 HV7349  LAPLACE CORR    -         -3.96  (seconds)                    DEFLEC18
 HV7349  HORZ ORDER      -  THIRD
 HV7349
 HV7349.The horizontal coordinates were established by classical geodetic methods
 HV7349.and adjusted by the National Geodetic Survey in November 1994.
 HV7349
 HV7349.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7349.GEOID18 height accuracy estimate available here.
 HV7349
 HV7349.Click photographs - Photos may exist for this station.
 HV7349
 HV7349.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7349
 HV7349. The following values were computed from the NAD 83(1993) position.
 HV7349
 HV7349;                    North         East     Units Scale Factor Converg.
 HV7349;SPC MD       -    99,130.841   427,190.944   MT  0.99996502   +0 11 44.9
 HV7349;SPC MD       -   325,231.77  1,401,542.29   sFT  0.99996502   +0 11 44.9
 HV7349;UTM  18      - 4,269,222.744   352,923.577   MT  0.99986639   -1 03 08.6
 HV7349
 HV7349_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5292369222(NAD 83)
 HV7349
 HV7349                          SUPERSEDED SURVEY CONTROL
 HV7349
 HV7349  NAD 83(1991)-  38 33 33.43389(N)    076 41 16.89848(W) AD(       ) 3
 HV7349  NAD 83(1986)-  38 33 33.43287(N)    076 41 16.91284(W) AD(       ) 3
 HV7349  NAD 27      -  38 33 32.99301(N)    076 41 18.05248(W) AD(       ) 3
 HV7349
 HV7349.Superseded values are not recommended for survey control.
 HV7349
 HV7349.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7349.See file dsdata.pdf to determine how the superseded data were derived.
 HV7349
 HV7349
 HV7349  HISTORY     - Date     Condition        Report By
 HV7349  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7349  HISTORY     - 1977     GOOD             NGS
 HV7349
 HV7349                          STATION DESCRIPTION
 HV7349
 HV7349'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7349'THE STATION IS THE CENTER OF THE TOP OF THE CHALK POINT POTOMAC
 HV7349'ELECTRIC POWER COMPANY MICROWAVE KPN 67.  IT IS ABOUT 300 FEET
 HV7349'ABOVE THE SURFACE OF THE GROUND.
 HV7349'
 HV7349'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND
 HV7349'EAGLE HARBOR ROAD AT THE SOUTH EDGE OF AQUASCO GO EAST ON EAGLE
 HV7349'HARBOR ROAD FOR 1.9 MILE TO FORK, BEAR TO THE RIGHT AND GO
 HV7349'SOUTHEASTERLY ON A PRIVATE ROAD FOR 0.3 MILE TO A SIDE ROAD LEFT,
 HV7349'TURN LEFT AND GO EAST FOR 0.25 MILE TO A LOCKED GATE AND THE
 HV7349'STATION SITE.
 HV7349
 HV7349                          STATION RECOVERY (1977)
 HV7349
 HV7349'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (JLC)
 HV7349'THE STATION WAS RECOVERED AS DESCRIBED IN 1970, WITH THE EXCEPTION
 HV7349'THAT THE LIGHT ON TOP, WHICH WAS NOT CENTER WAS ALSO INTERSECTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7346 ***********************************************************************
 HV7346  DESIGNATION -  CHALK POINT PEPCO N STACK
 HV7346  PID         -  HV7346
 HV7346  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7346  COUNTRY     -  US
 HV7346  USGS QUAD   -  BENEDICT (2016)
 HV7346
 HV7346                         *CURRENT SURVEY CONTROL
 HV7346  ______________________________________________________________________
 HV7346* NAD 83(1993) POSITION- 38 32 40.04298(N) 076 41 04.91052(W)   ADJUSTED
 HV7346* NAVD 88 ORTHO HEIGHT -   127.0   (meters)      417.    (feet) VERTCON3
 HV7346  ______________________________________________________________________
 HV7346  GEOID HEIGHT    -        -33.622 (meters)                     GEOID18
 HV7346  LAPLACE CORR    -         -3.91  (seconds)                    DEFLEC18
 HV7346  HORZ ORDER      -  THIRD
 HV7346
 HV7346.The horizontal coordinates were established by classical geodetic methods
 HV7346.and adjusted by the National Geodetic Survey in November 1994.
 HV7346
 HV7346.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7346.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7346
 HV7346.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7346.GEOID18 height accuracy estimate available here.
 HV7346
 HV7346.Click photographs - Photos may exist for this station.
 HV7346
 HV7346.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7346
 HV7346. The following values were computed from the NAD 83(1993) position.
 HV7346
 HV7346;                    North         East     Units Scale Factor Converg.
 HV7346;SPC MD       -    97,485.582   427,486.831   MT  0.99996647   +0 11 52.4
 HV7346;SPC MD       -   319,833.95  1,402,513.04   sFT  0.99996647   +0 11 52.4
 HV7346;UTM  18      - 4,267,571.596   353,183.532   MT  0.99986545   -1 02 59.9
 HV7346
 HV7346!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7346!SPC MD       -   0.99998534  x   0.99996647  =   0.99995181
 HV7346!UTM  18      -   0.99998534  x   0.99986545  =   0.99985079
 HV7346
 HV7346_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5318367571(NAD 83)
 HV7346
 HV7346                          SUPERSEDED SURVEY CONTROL
 HV7346
 HV7346  NAD 83(1991)-  38 32 40.04305(N)    076 41 04.91198(W) AD(       ) 3
 HV7346  NAD 83(1986)-  38 32 40.04247(N)    076 41 04.92656(W) AD(       ) 3
 HV7346  NAD 27      -  38 32 39.60425(N)    076 41 06.06045(W) AD(       ) 3
 HV7346  NGVD 29 (07/19/86)  127.3    (m)          418.     (f) VERT ANG       
 HV7346
 HV7346.Superseded values are not recommended for survey control.
 HV7346
 HV7346.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7346.See file dsdata.pdf to determine how the superseded data were derived.
 HV7346
 HV7346_MARKER: 63 = STACK
 HV7346_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7346+SATELLITE: SATELLITE OBSERVATIONS - January 05, 2013
 HV7346
 HV7346  HISTORY     - Date     Condition        Report By
 HV7346  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7346  HISTORY     - 1977     GOOD             NGS
 HV7346  HISTORY     - 20130105 GOOD             GEOCAC
 HV7346
 HV7346                          STATION DESCRIPTION
 HV7346
 HV7346'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7346'THE STATION IS THE CENTER OF THE TOP OF CHALK POINT GENERATOR
 HV7346'STATION NORTH STACK.  IT IS ABOUT 400 FEET ABOVE THE GROUND AND ON
 HV7346'THE PROPERTY OF THE POTOMAC ELECTRIC POWER COMPANY AT CHALK POINT.
 HV7346'
 HV7346'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND
 HV7346'EAGLE HARBOR ROAD AT THE SOUTH EDGE OF AQUASCO, GO EASTERLY ON
 HV7346'EAGLE HARBOR ROAD FOR 1.9 MILE TO A FORK, BEAR TO THE RIGHT AND GO
 HV7346'SOUTHERLY ON PRIVATE PAVED ROAD FOR 0.3 MILE TO A SIDE ROAD LEFT,
 HV7346'CONTINUE FOR 1.1 MILE TO A GUARD GATE AND THE ENTRANCE TO THE
 HV7346'GENERATOR STATION AND THE STACK STRAIGHT AHEAD.
 HV7346
 HV7346                          STATION RECOVERY (1977)
 HV7346
 HV7346'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (JLC)
 HV7346'RECOVERED AS DESCRIBED IN 1970.
 HV7346
 HV7346                          STATION RECOVERY (2013)
 HV7346
 HV7346'RECOVERY NOTE BY GEOCACHING 2013 (EP)
 HV7346'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7352 ***********************************************************************
 HV7352  DESIGNATION -  CHALK PT LARGE GEN STA N STACK
 HV7352  PID         -  HV7352
 HV7352  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7352  COUNTRY     -  US
 HV7352  USGS QUAD   -  BENEDICT (2016)
 HV7352
 HV7352                         *CURRENT SURVEY CONTROL
 HV7352  ______________________________________________________________________
 HV7352* NAD 83(1993) POSITION- 38 32 37.53840(N) 076 41 08.93118(W)   ADJUSTED
 HV7352* NAVD 88 ORTHO HEIGHT -   221.1   (meters)      725.    (feet) VERTCON3
 HV7352  ______________________________________________________________________
 HV7352  GEOID HEIGHT    -        -33.621 (meters)                     GEOID18
 HV7352  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 HV7352  HORZ ORDER      -  THIRD
 HV7352
 HV7352.The horizontal coordinates were established by classical geodetic methods
 HV7352.and adjusted by the National Geodetic Survey in November 1994.
 HV7352
 HV7352.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7352.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7352
 HV7352.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7352.GEOID18 height accuracy estimate available here.
 HV7352
 HV7352.Click photographs - Photos may exist for this station.
 HV7352
 HV7352.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7352
 HV7352. The following values were computed from the NAD 83(1993) position.
 HV7352
 HV7352;                    North         East     Units Scale Factor Converg.
 HV7352;SPC MD       -    97,408.020   427,389.734   MT  0.99996654   +0 11 49.9
 HV7352;SPC MD       -   319,579.48  1,402,194.49   sFT  0.99996654   +0 11 49.9
 HV7352;UTM  18      - 4,267,496.174   353,084.780   MT  0.99986581   -1 03 02.3
 HV7352
 HV7352!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7352!SPC MD       -   0.99997058  x   0.99996654  =   0.99993712
 HV7352!UTM  18      -   0.99997058  x   0.99986581  =   0.99983639
 HV7352
 HV7352_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5308467496(NAD 83)
 HV7352
 HV7352                          SUPERSEDED SURVEY CONTROL
 HV7352
 HV7352  NAD 83(1991)-  38 32 37.53836(N)    076 41 08.93251(W) AD(       ) 3
 HV7352  NAD 83(1986)-  38 32 37.53771(N)    076 41 08.94706(W) AD(       ) 3
 HV7352  NAD 27      -  38 32 37.10383(N)    076 41 10.08309(W) AD(       ) 3
 HV7352  NGVD 29 (07/19/86)  221.4    (m)          726.     (f) VERT ANG       
 HV7352
 HV7352.Superseded values are not recommended for survey control.
 HV7352
 HV7352.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7352.See file dsdata.pdf to determine how the superseded data were derived.
 HV7352
 HV7352_MARKER: 63 = STACK
 HV7352_MARK LOGO: NGS
 HV7352_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7352+SATELLITE: SATELLITE OBSERVATIONS - January 05, 2013
 HV7352
 HV7352  HISTORY     - Date     Condition        Report By
 HV7352  HISTORY     - 1977     FIRST OBSERVED   NGS
 HV7352  HISTORY     - 1977     GOOD             NGS
 HV7352  HISTORY     - 19810818 GOOD             NGS
 HV7352  HISTORY     - 20130105 GOOD             GEOCAC
 HV7352
 HV7352                          STATION DESCRIPTION
 HV7352
 HV7352'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (JLC)
 HV7352'THE STATION IS THE CENTER OF THE TOP OF CHALK POINT LARGE
 HV7352'GENERATOR STATION NORTH STACK.  IT IS RED AND WHITE IN ALTERNATE
 HV7352'COLORS AND IS ABOUT 720 FEET ABOVE THE GROUND AND ON THE PROPERTY
 HV7352'OF THE POTOMAC ELECTRIC POWER COMPANY AT CHALK POINT.
 HV7352'
 HV7352'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND
 HV7352'EAGLE HARBOR ROAD AT THE SOUTH EDGE OF AQUASCO, GO EASTERLY ON
 HV7352'EAGLE HARBOR ROAD FOR 1.9 MILES TO A FORK, BEAR TO THE RIGHT AND
 HV7352'GO SOUTHERLY ON PRIVATE PAVED ROAD FOR 0.3 MILE TO A SIDE ROAD
 HV7352'LEFT, CONTINUE FOR 1.1 MILES TO A GUARD GATE AND THE ENTRANCE TO
 HV7352'THE GENERATOR STATION AND THE STACKS.
 HV7352
 HV7352                          STATION RECOVERY (1977)
 HV7352
 HV7352'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 HV7352'RECOVERED IN GOOD CONDITION.
 HV7352
 HV7352                          STATION RECOVERY (1981)
 HV7352
 HV7352'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HV7352'THE STATION IS THE CENTER OF THE TOP OF CHALK POINT LARGE
 HV7352'GENERATOR STATION NORTH STACK.  IT IS RED AND WHITE IN ALTERNATE
 HV7352'COLORS AND IS ABOUT 720 FEET ABOVE THE GROUND AND ON THE PROPERTY
 HV7352'OF THE POTOMAC ELECTRIC POWER COMPANY AT CHALK POINT.
 HV7352'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND
 HV7352'EAGLE HARBOR ROAD AT THE SOUTH EDGE OF AQUASCO, GO EASTERLY ON
 HV7352'EAGLE HARBOR ROAD FOR 1.9 MILES TO A FORK, BEAR TO THE RIGHT AND
 HV7352'GO SOUTHERLY ON PRIVATE PAVED ROAD FOR 0.3 MILE TO A SIDE ROAD
 HV7352'LEFT, CONTINUE FOR 1.1 MILES TO A GUARD GATE AND THE ENTRANCE TO
 HV7352'THE GENERATOR STATION AND THE STACKS.
 HV7352
 HV7352                          STATION RECOVERY (2013)
 HV7352
 HV7352'RECOVERY NOTE BY GEOCACHING 2013 (EP)
 HV7352'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7353 ***********************************************************************
 HV7353  DESIGNATION -  CHALK PT LARGE GEN STA S STACK
 HV7353  PID         -  HV7353
 HV7353  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7353  COUNTRY     -  US
 HV7353  USGS QUAD   -  BENEDICT (2016)
 HV7353
 HV7353                         *CURRENT SURVEY CONTROL
 HV7353  ______________________________________________________________________
 HV7353* NAD 83(1993) POSITION- 38 32 35.38811(N) 076 41 10.09037(W)   ADJUSTED
 HV7353* NAVD 88 ORTHO HEIGHT -   221.9   (meters)      728.    (feet) VERTCON3
 HV7353  ______________________________________________________________________
 HV7353  GEOID HEIGHT    -        -33.621 (meters)                     GEOID18
 HV7353  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 HV7353  HORZ ORDER      -  THIRD
 HV7353
 HV7353.The horizontal coordinates were established by classical geodetic methods
 HV7353.and adjusted by the National Geodetic Survey in November 1994.
 HV7353
 HV7353.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7353.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7353
 HV7353.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7353.GEOID18 height accuracy estimate available here.
 HV7353
 HV7353.Click photographs - Photos may exist for this station.
 HV7353
 HV7353.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7353
 HV7353. The following values were computed from the NAD 83(1993) position.
 HV7353
 HV7353;                    North         East     Units Scale Factor Converg.
 HV7353;SPC MD       -    97,341.621   427,361.892   MT  0.99996660   +0 11 49.2
 HV7353;SPC MD       -   319,361.63  1,402,103.14   sFT  0.99996660   +0 11 49.2
 HV7353;UTM  18      - 4,267,430.404   353,055.501   MT  0.99986591   -1 03 03.0
 HV7353
 HV7353!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7353!SPC MD       -   0.99997045  x   0.99996660  =   0.99993705
 HV7353!UTM  18      -   0.99997045  x   0.99986591  =   0.99983637
 HV7353
 HV7353_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5305567430(NAD 83)
 HV7353
 HV7353                          SUPERSEDED SURVEY CONTROL
 HV7353
 HV7353  NAD 83(1991)-  38 32 35.38808(N)    076 41 10.09171(W) AD(       ) 3
 HV7353  NAD 83(1986)-  38 32 35.38583(N)    076 41 10.10506(W) AD(       ) 3
 HV7353  NAD 27      -  38 32 34.95133(N)    076 41 11.24173(W) AD(       ) 3
 HV7353  NGVD 29 (07/19/86)  222.2    (m)          729.     (f) VERT ANG       
 HV7353
 HV7353.Superseded values are not recommended for survey control.
 HV7353
 HV7353.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7353.See file dsdata.pdf to determine how the superseded data were derived.
 HV7353
 HV7353_MARKER: 63 = STACK
 HV7353_MARK LOGO: NGS
 HV7353_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7353+SATELLITE: SATELLITE OBSERVATIONS - January 05, 2013
 HV7353
 HV7353  HISTORY     - Date     Condition        Report By
 HV7353  HISTORY     - 1977     FIRST OBSERVED   NGS
 HV7353  HISTORY     - 1977     GOOD             NGS
 HV7353  HISTORY     - 19810818 GOOD             NGS
 HV7353  HISTORY     - 20130105 GOOD             GEOCAC
 HV7353
 HV7353                          STATION DESCRIPTION
 HV7353
 HV7353'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (JLC)
 HV7353'THE STATION IS THE CENTER OF THE TOP OF CHALK POINT LARGE
 HV7353'GENERATOR STATION SOUTH STACK.  IT IS RED AND WHITE IN ALTERNATE
 HV7353'COLORS AND IS ABOUT 720 FEET ABOVE THE GROUND AND ON THE PROPERTY
 HV7353'OF THE POTOMAC ELECTRIC POWER COMPANY AT CHALK POINT.
 HV7353'
 HV7353'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND
 HV7353'EAGLE HARBOR ROAD AT THE SOUTH EDGE OF AQUASCO, GO EASTERLY ON
 HV7353'EAGLE HARBOR ROAD FOR 1.9 MILES TO A FORK, BEAR TO THE RIGHT, AND
 HV7353'GO SOUTHERLY ON PRIVATE PAVED ROAD FOR 0.3 MILE TO A SIDE ROAD
 HV7353'LEFT, CONTINUE FOR 1.1 MILES TO A GUARD GATE AND THE ENTRANCE TO
 HV7353'THE GENERATOR STATION AND THE STACKS.
 HV7353
 HV7353                          STATION RECOVERY (1977)
 HV7353
 HV7353'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 HV7353'RECOVERED IN GOOD CONDITION.
 HV7353
 HV7353                          STATION RECOVERY (1981)
 HV7353
 HV7353'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HV7353'THE STATION IS THE CENTER OF THE TOP OF CHALK POINT LARGE
 HV7353'GENERATOR STATION SOUTH STACK.  IT IS RED AND WHITE IN ALTERNATE
 HV7353'COLORS AND IS ABOUT 720 FEET ABOVE THE GROUND AND ON THE PROPERTY
 HV7353'OF THE POTOMAC ELECTRIC POWER COMPANY AT CHALK POINT.
 HV7353'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND
 HV7353'EAGLE HARBOR ROAD AT THE SOUTH EDGE OF AQUASCO, GO EASTERLY ON
 HV7353'EAGLE HARBOR ROAD FOR 1.9 MILES TO A FORK, BEAR TO THE RIGHT, AND
 HV7353'GO SOUTHERLY ON PRIVATE PAVED ROAD FOR 0.3 MILE TO A SIDE ROAD
 HV7353'LEFT, CONTINUE FOR 1.1 MILES TO A GUARD GATE AND THE ENTRANCE TO
 HV7353'THE GENERATOR STATION AND THE STACKS.
 HV7353
 HV7353                          STATION RECOVERY (2013)
 HV7353
 HV7353'RECOVERY NOTE BY GEOCACHING 2013 (EP)
 HV7353'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7354 ***********************************************************************
 HV7354  DESIGNATION -  CHALK PT PEPCO MICROWAVE LIGHT
 HV7354  PID         -  HV7354
 HV7354  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7354  COUNTRY     -  US
 HV7354  USGS QUAD   -  BENEDICT (2016)
 HV7354
 HV7354                         *CURRENT SURVEY CONTROL
 HV7354  ______________________________________________________________________
 HV7354* NAD 83(1993) POSITION- 38 33 33.47861(N) 076 41 16.95313(W)   ADJUSTED
 HV7354* NAVD 88 ORTHO HEIGHT -   121.8   (meters)      400.    (feet) VERTCON3
 HV7354  ______________________________________________________________________
 HV7354  GEOID HEIGHT    -        -33.589 (meters)                     GEOID18
 HV7354  LAPLACE CORR    -         -3.96  (seconds)                    DEFLEC18
 HV7354  HORZ ORDER      -  THIRD
 HV7354
 HV7354.The horizontal coordinates were established by classical geodetic methods
 HV7354.and adjusted by the National Geodetic Survey in November 1994.
 HV7354
 HV7354.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7354.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7354
 HV7354.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7354.GEOID18 height accuracy estimate available here.
 HV7354
 HV7354.Click photographs - Photos may exist for this station.
 HV7354
 HV7354.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7354
 HV7354. The following values were computed from the NAD 83(1993) position.
 HV7354
 HV7354;                    North         East     Units Scale Factor Converg.
 HV7354;SPC MD       -    99,132.216   427,189.583   MT  0.99996502   +0 11 44.9
 HV7354;SPC MD       -   325,236.28  1,401,537.82   sFT  0.99996502   +0 11 44.9
 HV7354;UTM  18      - 4,269,224.148   352,922.245   MT  0.99986639   -1 03 08.6
 HV7354
 HV7354!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7354!SPC MD       -   0.99998615  x   0.99996502  =   0.99995117
 HV7354!UTM  18      -   0.99998615  x   0.99986639  =   0.99985255
 HV7354
 HV7354_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5292269224(NAD 83)
 HV7354
 HV7354                          SUPERSEDED SURVEY CONTROL
 HV7354
 HV7354  NAD 83(1991)-  38 33 33.47863(N)    076 41 16.95445(W) AD(       ) 3
 HV7354  NAD 83(1986)-  38 33 33.47755(N)    076 41 16.96894(W) AD(       ) 3
 HV7354  NAD 27      -  38 33 33.04209(N)    076 41 18.10273(W) AD(       ) 3
 HV7354  NGVD 29 (07/19/86)  122.1    (m)          401.     (f) VERT ANG       
 HV7354
 HV7354.Superseded values are not recommended for survey control.
 HV7354
 HV7354.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7354.See file dsdata.pdf to determine how the superseded data were derived.
 HV7354
 HV7354
 HV7354  HISTORY     - Date     Condition        Report By
 HV7354  HISTORY     - 1977     FIRST OBSERVED   NGS
 HV7354
 HV7354                          STATION DESCRIPTION
 HV7354
 HV7354'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (JLC)
 HV7354'THE STATION IS THE CENTER OF THE TOP OF THE CHALK POINT POTOMAC
 HV7354'ELECTRIC POWER COMPANY MICROWAVE KPN 67.  IT IS ABOUT 300 FEET
 HV7354'ABOVE THE SURFACE OF THE GROUND.
 HV7354'
 HV7354'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND
 HV7354'EAGLE HARBOR ROAD AT THE SOUTH EDGE OF AQUASCO GO EAST ON EAGLE
 HV7354'HARBOR ROAD FOR 1.9 MILE TO FORK, BEAR TO THE RIGHT AND GO
 HV7354'SOUTHEASTERLY ON A PRIVATE ROAD FOR 0.3 MILE TO A SIDE ROAD LEFT,
 HV7354'TURN LEFT AND GO EAST FOR 0.25 MILE TO A LOCKED GATE AND THE
 HV7354'STATION SITE.
 HV7354'
 HV7354'THE STATION WAS RECOVERED AS DESCRIBED IN 1970, WITH THE EXCEPTION
 HV7354'THAT THE LIGHT ON TOP, WHICH WAS NOT CENTER WAS ALSO INTERSECTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1036 ***********************************************************************
 HV1036  DESIGNATION -  CHAMBERS
 HV1036  PID         -  HV1036
 HV1036  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1036  COUNTRY     -  US
 HV1036  USGS QUAD   -  ANACOSTIA (2016)
 HV1036
 HV1036                         *CURRENT SURVEY CONTROL
 HV1036  ______________________________________________________________________
 HV1036* NAD 83(1993) POSITION- 38 48 55.45668(N) 076 56 48.28121(W)   ADJUSTED
 HV1036* NAVD 88 ORTHO HEIGHT -    82.246 (meters)      269.84  (feet) ADJUSTED
 HV1036  ______________________________________________________________________
 HV1036  GEOID HEIGHT    -        -32.367 (meters)                     GEOID18
 HV1036  LAPLACE CORR    -         -4.08  (seconds)                    DEFLEC18
 HV1036  DYNAMIC HEIGHT  -         82.201 (meters)      269.69  (feet) COMP
 HV1036  MODELED GRAVITY -    980,075.2   (mgal)                       NAVD 88
 HV1036
 HV1036  HORZ ORDER      -  SECOND
 HV1036  VERT ORDER      -  SECOND    CLASS 0
 HV1036
 HV1036.The horizontal coordinates were established by classical geodetic methods
 HV1036.and adjusted by the National Geodetic Survey in November 1994.
 HV1036
 HV1036.The orthometric height was determined by differential leveling and
 HV1036.adjusted by the NATIONAL GEODETIC SURVEY
 HV1036.in June 1991.
 HV1036
 HV1036.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1036.GEOID18 height accuracy estimate available here.
 HV1036
 HV1036.Click photographs - Photos may exist for this station.
 HV1036
 HV1036.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1036
 HV1036.The dynamic height is computed by dividing the NAVD 88
 HV1036.geopotential number by the normal gravity value computed on the
 HV1036.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1036.degrees latitude (g = 980.6199 gals.).
 HV1036
 HV1036.The modeled gravity was interpolated from observed gravity values.
 HV1036
 HV1036. The following values were computed from the NAD 83(1993) position.
 HV1036
 HV1036;                    North         East     Units Scale Factor Converg.
 HV1036;SPC MD       -   127,515.954   404,625.042   MT  0.99995040   +0 02 00.3
 HV1036;SPC MD       -   418,358.59  1,327,507.33   sFT  0.99995040   +0 02 00.3
 HV1036;UTM  18      - 4,298,092.343   330,983.778   MT  0.99995178   -1 13 13.9
 HV1036
 HV1036!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1036!SPC MD       -   0.99999217  x   0.99995040  =   0.99994257
 HV1036!UTM  18      -   0.99999217  x   0.99995178  =   0.99994395
 HV1036
 HV1036:                Primary Azimuth Mark                     Grid Az
 HV1036:SPC MD       -  CHAMBERS AZ MK                           231 57 28.9
 HV1036:UTM  18      -  CHAMBERS AZ MK                           233 12 43.1
 HV1036
 HV1036_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3098398092(NAD 83)
 HV1036
 HV1036|---------------------------------------------------------------------|
 HV1036| PID    Reference Object                     Distance      Geod. Az  |
 HV1036|                                                           dddmmss.s |
 HV1036| HV1038 CHAMBERS RM 2                        20.033 METERS 19745     |
 HV1036| CX2201 CHAMBERS AZ MK                                     2315929.2 |
 HV1036| HV7610 PHELPS COR ST BARNABAS RD TWR       APPROX. 1.3 KM 2601824.0 |
 HV1036| HV1037 CHAMBERS RM 1                        21.895 METERS 33551     |
 HV1036|---------------------------------------------------------------------|
 HV1036
 HV1036                          SUPERSEDED SURVEY CONTROL
 HV1036
 HV1036  NAD 83(1991)-  38 48 55.45566(N)    076 56 48.28200(W) AD(       ) 2
 HV1036  NAD 83(1986)-  38 48 55.45485(N)    076 56 48.29440(W) AD(       ) 2
 HV1036  NAD 27      -  38 48 55.04763(N)    076 56 49.38553(W) AD(       ) 2
 HV1036  NGVD 29              82.50   (m)          270.7    (f) LEVELING    3  
 HV1036  NGVD 29 (11/26/84)   82.500  (m)          270.67   (f) ADJUSTED    2 0
 HV1036
 HV1036.Superseded values are not recommended for survey control.
 HV1036
 HV1036.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1036.See file dsdata.pdf to determine how the superseded data were derived.
 HV1036
 HV1036_MARKER: DS = TRIANGULATION STATION DISK
 HV1036_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1036_STAMPING: CHAMBERS 1958
 HV1036_MARK LOGO: CGS
 HV1036_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1036+STABILITY: SURFACE MOTION
 HV1036
 HV1036  HISTORY     - Date     Condition        Report By
 HV1036  HISTORY     - 1958     MONUMENTED       CGS
 HV1036  HISTORY     - 1958     GOOD             CGS
 HV1036
 HV1036                          STATION DESCRIPTION
 HV1036
 HV1036'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1036'THE STATION IS IN THE SOUTH EDGE OF TEMPLE HILL, 3.0 MILES
 HV1036'WEST-SOUTHWEST OF MORNINGSIDE AND 2.3 MILES SOUTHEAST OF THE
 HV1036'DISTRICT LINE.  IT IS 92 FEET SOUTH-SOUTHEAST OF DRIVEWAY, 39 FEET
 HV1036'NORTH-NORTHWEST OF FENCE LINE, 51 FEET WEST OF FENCE CORNER, 30
 HV1036'FEET SOUTHWEST OF FENCE LINE.  THE MARK IS SET FLUSH AND THE DISK
 HV1036'IS STAMPED CHAMBERS 1958.
 HV1036'
 HV1036'R.M. NO. 1 IS 24 FEET SOUTHEAST OF DRIVEWAY, 16 FEET SOUTH OF GATE
 HV1036'AND 1 FOOT SOUTHWEST OF FENCE LINE.  THE MARK PROJECTS ABOUT 2 INCHES
 HV1036'AND THE DISK IS STAMPED CHAMBERS NO 1 1958.
 HV1036'
 HV1036'R.M. NO. 2 IS 4 FEET SOUTHWEST OF CORNER OF HOUSE AND 2 FEET
 HV1036'NORTHWEST OF FENCE LINE.  THE MARK PROJECTS ABOUT 3 INCHES AND THE
 HV1036'DISK IS STAMPED CHAMBERS NO 2 1958.
 HV1036'
 HV1036'AZIMUTH MARK IS 56 FEET NORTH-NORTHWEST OF FENCE CORNER, 1 FOOT
 HV1036'SOUTH-SOUTHEAST OF WITNESS POST AND 1 FOOT EAST-NORTHEAST OF FENCE
 HV1036'LINE.  THE MARK IS A STANDARD BRONZE DISK BRAZED ON TOP OF A 2 INCH
 HV1036'PIPE WHICH PROJECTS ABOUT 6 INCHES.  THE DISK IS STAMPED CHAMBERS
 HV1036'1958.
 HV1036'
 HV1036'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 5 AND 414,
 HV1036'ABOUT 6 MILES SOUTHEAST OF THE CENTER OF WASHINGTON, GO WESTERLY ON
 HV1036'STATE HIGHWAY 414 FOR 0.9 MILE TO TEMPLE HILL ROAD, TURN LEFT AND
 HV1036'GO SOUTHERLY ON TEMPLE HILL ROAD FOR 0.35 MILE TO REVERSE FORK,
 HV1036'CONTINUE STRAIGHT AHEAD FOR 0.2 MILE TO WIRE GATE AND DRIVEWAY INTO
 HV1036'GREEN HOUSE, PASS THROUGH GATE AND TURN LEFT FOR ABOUT 100
 HV1036'FEET TO STATION AS DESCRIBED.
 HV1036'
 HV1036'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 HV1036
 HV1036                          STATION RECOVERY (1958)
 HV1036
 HV1036'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV1036'3.4 MI NE FROM OXON HILL.
 HV1036'ABOUT 2.8 MILES NORTHEAST ALONG STATE HIGHWAY 414 FROM THE
 HV1036'INTERSECTION OF LIVINGSTON ROAD AT OXON HILL, THENCE 0.6 MILE
 HV1036'SOUTH ALONG THE TEMPLE HILL ROAD, NEAR THE SOUTHEAST CORNER
 HV1036'OF THE CHAMBERS GREENHOUSE, 39 FEET NORTH OF AN EAST-WEST FENCE
 HV1036'LINE, 29 FEET WEST OF A NORTH-SOUTH FENCE LINE, 94 FEET SOUTH OF
 HV1036'THE CENTER LINE OF A DRIVEWAY LEADING TO GREENHOUSE, SET IN THE
 HV1036'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4950 ***********************************************************************
 JV4950  DESIGNATION -  CHAMBERS
 JV4950  PID         -  JV4950
 JV4950  STATE/COUNTY-  MD/QUEEN ANNES
 JV4950  COUNTRY     -  US
 JV4950  USGS QUAD   -  CHESTERTOWN (2017)
 JV4950
 JV4950                         *CURRENT SURVEY CONTROL
 JV4950  ______________________________________________________________________
 JV4950* NAD 83(1991) POSITION- 39 11 10.28188(N) 076 02 59.59268(W)   ADJUSTED
 JV4950* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV4950  ______________________________________________________________________
 JV4950  GEOID HEIGHT    -        -33.495 (meters)                     GEOID18
 JV4950  LAPLACE CORR    -         -2.22  (seconds)                    DEFLEC18
 JV4950  HORZ ORDER      -  THIRD
 JV4950
 JV4950.The horizontal coordinates were established by classical geodetic methods
 JV4950.and adjusted by the National Geodetic Survey in January 1992.
 JV4950
 JV4950.The orthometric height was scaled from a topographic map.
 JV4950
 JV4950.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4950.GEOID18 height accuracy estimate available here.
 JV4950
 JV4950.Click photographs - Photos may exist for this station.
 JV4950
 JV4950.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4950
 JV4950. The following values were computed from the NAD 83(1991) position.
 JV4950
 JV4950;                    North         East     Units Scale Factor Converg.
 JV4950;SPC MD       -   169,102.730   482,084.345   MT  0.99996448   +0 35 46.8
 JV4950;SPC MD       -   554,797.87  1,581,638.39   sFT  0.99996448   +0 35 46.8
 JV4950;UTM  18      - 4,337,963.491   409,326.166   MT  0.99970123   -0 39 48.3
 JV4950
 JV4950!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4950!SPC MD       -   1.00000514  x   0.99996448  =   0.99996962
 JV4950!UTM  18      -   1.00000514  x   0.99970123  =   0.99970636
 JV4950
 JV4950:                Primary Azimuth Mark                     Grid Az
 JV4950:SPC MD       -  EVANS UPPER CHESTER RIVER                134 30 58.9
 JV4950:UTM  18      -  EVANS UPPER CHESTER RIVER                135 46 34.0
 JV4950
 JV4950_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0932637963(NAD 83)
 JV4950
 JV4950|---------------------------------------------------------------------|
 JV4950| PID    Reference Object                     Distance      Geod. Az  |
 JV4950|                                                           dddmmss.s |
 JV4950| JV4970 EVANS UPPER CHESTER RIVER           APPROX. 1.1 KM 1350645.7 |
 JV4950|---------------------------------------------------------------------|
 JV4950
 JV4950                          SUPERSEDED SURVEY CONTROL
 JV4950
 JV4950  NAD 83(1986)-  39 11 10.27412(N)    076 02 59.60530(W) AD(       ) 3
 JV4950  NAD 27      -  39 11 09.88300(N)    076 03 00.79600(W) AD(       ) 3
 JV4950  USSD        -  39 11 10.32500(N)    076 03 00.56300(W) AD(       ) 3
 JV4950
 JV4950.Superseded values are not recommended for survey control.
 JV4950
 JV4950.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4950.See file dsdata.pdf to determine how the superseded data were derived.
 JV4950
 JV4950_MARKER: N = NAIL
 JV4950_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4950_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4950
 JV4950  HISTORY     - Date     Condition        Report By
 JV4950  HISTORY     - 1909     MONUMENTED       CGS
 JV4950  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV4950
 JV4950                          STATION DESCRIPTION
 JV4950
 JV4950'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JV4950'STATION IS ON THE NORTHERN SHORE OF CHESTER RIVER, ABOUT 150
 JV4950'METERS UPRIVER FROM CHAMBERS WHARF ON A BLUFF ABOUT 4 FEET ABOVE
 JV4950'HIGH WATER, AND 2 METERS BACK FROM THE EDGE OF THE BLUFF.
 JV4950'
 JV4950'THE STATION IS MARKED BY A BURIED WHITE QUART BOTTLE AND A
 JV4950'NAIL IN CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN
 JV4950'THE TOP OF A 4-INCH DRAINTILE AT THE SURFACE OF THE GROUND.  THE
 JV4950'REFERENCE MARK IS A QUART BOTTLE BURIED 3 FEET AND A NAIL
 JV4950'IN CONCRETE IN THE TOP OF A 3-INCH DRAINTILE AT THE
 JV4950'SURFACE.  REFERENCE MARK IS 7.82 METERS (25.66 FEET) FROM THE
 JV4950'STATION N 87 DEG 55 MIN W.
 JV4950
 JV4950                          STATION RECOVERY (1941)
 JV4950
 JV4950'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV4950'SEARCHED FOR BUT NOT FOUND.  THE BANK 150 METERS FROM CHAMBERS
 JV4950'WHARF SHOWS SIGNS OF EROSION, AND IT IS BELIEVED THAT STATION HAS
 JV4950'WASHED OUT.  RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1037 ***********************************************************************
 HV1037  DESIGNATION -  CHAMBERS RM 1
 HV1037  PID         -  HV1037
 HV1037  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1037  COUNTRY     -  US
 HV1037  USGS QUAD   -  ANACOSTIA (2016)
 HV1037
 HV1037                         *CURRENT SURVEY CONTROL
 HV1037  ______________________________________________________________________
 HV1037* NAD 83(1986) POSITION- 38 48 56.10   (N) 076 56 48.65   (W)   HD_HELD1
 HV1037* NAVD 88 ORTHO HEIGHT -    82.238 (meters)      269.81  (feet) ADJUSTED
 HV1037  ______________________________________________________________________
 HV1037  GEOID HEIGHT    -        -32.366 (meters)                     GEOID18
 HV1037  DYNAMIC HEIGHT  -         82.193 (meters)      269.66  (feet) COMP
 HV1037  MODELED GRAVITY -    980,075.2   (mgal)                       NAVD 88
 HV1037
 HV1037  VERT ORDER      -  SECOND    CLASS 0
 HV1037
 HV1037.The horizontal coordinates were determined by differentially corrected
 HV1037.hand held GPS observations or other comparable positioning techniques
 HV1037.and have an estimated accuracy of +/- 3 meters.
 HV1037
 HV1037.The orthometric height was determined by differential leveling and
 HV1037.adjusted by the NATIONAL GEODETIC SURVEY
 HV1037.in June 1991.
 HV1037
 HV1037.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1037.GEOID18 height accuracy estimate available here.
 HV1037
 HV1037.Click photographs - Photos may exist for this station.
 HV1037
 HV1037.The dynamic height is computed by dividing the NAVD 88
 HV1037.geopotential number by the normal gravity value computed on the
 HV1037.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1037.degrees latitude (g = 980.6199 gals.).
 HV1037
 HV1037.The modeled gravity was interpolated from observed gravity values.
 HV1037
 HV1037;                    North         East    Units  Estimated Accuracy
 HV1037;SPC MD       -   127,535.8     404,616.1     MT  (+/- 3 meters HH1 GPS) 
 HV1037
 HV1037_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3097598112(NAD 83)
 HV1037
 HV1037                          SUPERSEDED SURVEY CONTROL
 HV1037
 HV1037  NGVD 29 (11/26/84)   82.492  (m)          270.64   (f) ADJUSTED    2 0
 HV1037
 HV1037.Superseded values are not recommended for survey control.
 HV1037
 HV1037.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1037.See file dsdata.pdf to determine how the superseded data were derived.
 HV1037
 HV1037_MARKER: DR = REFERENCE MARK DISK
 HV1037_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1037_STAMPING: CHAMBERS NO 1 1958
 HV1037_MARK LOGO: CGS
 HV1037_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1037+STABILITY: SURFACE MOTION
 HV1037
 HV1037  HISTORY     - Date     Condition        Report By
 HV1037  HISTORY     - 1958     MONUMENTED       CGS
 HV1037
 HV1037                          STATION DESCRIPTION
 HV1037
 HV1037'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1037'3.4 MI NE FROM OXON HILL.
 HV1037'ABOUT 2.8 MILES NORTHEAST ALONG STATE HIGHWAY 414 FROM THE
 HV1037'INTERSECTION OF LIVINGSTON ROAD AT OXON HILL, THENCE 0.6 MILE
 HV1037'SOUTH ALONG TEMPLE HILL ROAD, NEAR THE CHAMBERS GREENHOUSE, 24
 HV1037'FEET SOUTHEAST OF THE CENTER LINE OF A DRIVEWAY, 16 FEET SOUTH
 HV1037'OF A GATE, 1 FOOT SOUTHWEST OF A FENCE LINE, 71.8 FEET NORTHWEST
 HV1037'OF THE STATION AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 HV1037'2 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1038 ***********************************************************************
 HV1038  DESIGNATION -  CHAMBERS RM 2
 HV1038  PID         -  HV1038
 HV1038  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1038  COUNTRY     -  US
 HV1038  USGS QUAD   -  ANACOSTIA (2016)
 HV1038
 HV1038                         *CURRENT SURVEY CONTROL
 HV1038  ______________________________________________________________________
 HV1038* NAD 83(1986) POSITION- 38 48 54.84   (N) 076 56 48.53   (W)   HD_HELD1
 HV1038* NAVD 88 ORTHO HEIGHT -    80.901 (meters)      265.42  (feet) ADJUSTED
 HV1038  ______________________________________________________________________
 HV1038  GEOID HEIGHT    -        -32.367 (meters)                     GEOID18
 HV1038  DYNAMIC HEIGHT  -         80.856 (meters)      265.28  (feet) COMP
 HV1038  MODELED GRAVITY -    980,075.2   (mgal)                       NAVD 88
 HV1038
 HV1038  VERT ORDER      -  SECOND    CLASS 0
 HV1038
 HV1038.The horizontal coordinates were determined by differentially corrected
 HV1038.hand held GPS observations or other comparable positioning techniques
 HV1038.and have an estimated accuracy of +/- 3 meters.
 HV1038
 HV1038.The orthometric height was determined by differential leveling and
 HV1038.adjusted by the NATIONAL GEODETIC SURVEY
 HV1038.in June 1991.
 HV1038
 HV1038.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1038.GEOID18 height accuracy estimate available here.
 HV1038
 HV1038.Click photographs - Photos may exist for this station.
 HV1038
 HV1038.The dynamic height is computed by dividing the NAVD 88
 HV1038.geopotential number by the normal gravity value computed on the
 HV1038.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1038.degrees latitude (g = 980.6199 gals.).
 HV1038
 HV1038.The modeled gravity was interpolated from observed gravity values.
 HV1038
 HV1038;                    North         East    Units  Estimated Accuracy
 HV1038;SPC MD       -   127,496.9     404,619.1     MT  (+/- 3 meters HH1 GPS) 
 HV1038
 HV1038_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3097798073(NAD 83)
 HV1038
 HV1038                          SUPERSEDED SURVEY CONTROL
 HV1038
 HV1038  NGVD 29 (11/26/84)   81.155  (m)          266.26   (f) ADJUSTED    2 0
 HV1038
 HV1038.Superseded values are not recommended for survey control.
 HV1038
 HV1038.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1038.See file dsdata.pdf to determine how the superseded data were derived.
 HV1038
 HV1038_MARKER: DR = REFERENCE MARK DISK
 HV1038_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1038_STAMPING: CHAMBERS NO 2 1958
 HV1038_MARK LOGO: CGS
 HV1038_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1038+STABILITY: SURFACE MOTION
 HV1038
 HV1038  HISTORY     - Date     Condition        Report By
 HV1038  HISTORY     - 1958     MONUMENTED       CGS
 HV1038
 HV1038                          STATION DESCRIPTION
 HV1038
 HV1038'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1038'3.4 MI NE FROM OXON HILL.
 HV1038'ABOUT 2.8 MILES NORTHEAST ALONG STATE HIGHWAY 414 FROM THE
 HV1038'INTERSECTION OF LIVINGSTON ROAD AT OXON HILL, THENCE 0.6 MILE
 HV1038'SOUTH ALONG TEMPLE HILL ROAD, NEAR THE CHAMBERS GREENHOUSE, 4
 HV1038'FEET SOUTHWEST OF THE CORNER OF HOUSE, 2 FEET NORTHWEST OF A
 HV1038'FENCE LINE, 65.7 FEET SOUTH-SOUTHWEST OF THE STATION AND SET
 HV1038'IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE
 HV1038'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6603 ***********************************************************************
 HV6603  DESIGNATION -  CHAN
 HV6603  PID         -  HV6603
 HV6603  STATE/COUNTY-  MD/ST MARYS
 HV6603  COUNTRY     -  US
 HV6603  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6603
 HV6603                         *CURRENT SURVEY CONTROL
 HV6603  ______________________________________________________________________
 HV6603* NAD 83(1993) POSITION- 38 10 06.21657(N) 076 26 39.85855(W)   ADJUSTED
 HV6603* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6603  ______________________________________________________________________
 HV6603  GEOID HEIGHT    -        -34.750 (meters)                     GEOID18
 HV6603  LAPLACE CORR    -         -6.10  (seconds)                    DEFLEC18
 HV6603  HORZ ORDER      -  THIRD
 HV6603
 HV6603.The horizontal coordinates were established by classical geodetic methods
 HV6603.and adjusted by the National Geodetic Survey in November 1994.
 HV6603
 HV6603.The orthometric height was scaled from a topographic map.
 HV6603
 HV6603.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6603.GEOID18 height accuracy estimate available here.
 HV6603
 HV6603.Click photographs - Photos may exist for this station.
 HV6603
 HV6603.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6603
 HV6603. The following values were computed from the NAD 83(1993) position.
 HV6603
 HV6603;                    North         East     Units Scale Factor Converg.
 HV6603;SPC MD       -    55,842.395   448,688.406   MT  1.00002550   +0 20 55.4
 HV6603;SPC MD       -   183,209.59  1,472,071.88   sFT  1.00002550   +0 20 55.4
 HV6603;UTM  18      - 4,225,484.595   373,472.418   MT  0.99979717   -0 53 33.8
 HV6603
 HV6603!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6603!SPC MD       -   1.00000534  x   1.00002550  =   1.00003084
 HV6603!UTM  18      -   1.00000534  x   0.99979717  =   0.99980251
 HV6603
 HV6603:                Primary Azimuth Mark                     Grid Az
 HV6603:SPC MD       -  BELLO 1908                               322 09 48.4
 HV6603:UTM  18      -  BELLO 1908                               323 24 17.6
 HV6603
 HV6603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7347225484(NAD 83)
 HV6603
 HV6603|---------------------------------------------------------------------|
 HV6603| PID    Reference Object                     Distance      Geod. Az  |
 HV6603|                                                           dddmmss.s |
 HV6603| CX2202 CHAN RM                              14.140 METERS 10151     |
 HV6603| HV6605 BELLO 1908                          APPROX. 0.9 KM 3223043.8 |
 HV6603|---------------------------------------------------------------------|
 HV6603
 HV6603                          SUPERSEDED SURVEY CONTROL
 HV6603
 HV6603  NAD 83(1991)-  38 10 06.21564(N)    076 26 39.86165(W) AD(       ) 3
 HV6603  NAD 83(1986)-  38 10 06.21642(N)    076 26 39.87503(W) AD(       ) 3
 HV6603  NAD 27      -  38 10 05.82900(N)    076 26 41.09800(W) AD(       ) 3
 HV6603  USSD        -  38 10 06.21200(N)    076 26 40.80600(W) AD(       ) 3
 HV6603
 HV6603.Superseded values are not recommended for survey control.
 HV6603
 HV6603.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6603.See file dsdata.pdf to determine how the superseded data were derived.
 HV6603
 HV6603_MARKER: Z = SEE DESCRIPTION
 HV6603_SETTING: 0 = UNSPECIFIED SETTING
 HV6603
 HV6603  HISTORY     - Date     Condition        Report By
 HV6603  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6603  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6603
 HV6603                          STATION DESCRIPTION
 HV6603
 HV6603'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6603'STATION IS ON THE EASTERN SHORE OF ST. MARYS RIVER, ON CHANCELLOR
 HV6603'POINT, ABOUT 7/8 MILE NNW OF ENTRANCE TO ST. INIGOES CREEK, ON A
 HV6603'LONG POINT ABOUT 3 FEET ABOVE HIGH WATER, 10 YARDS N OF SIDE OF
 HV6603'POINT, 12 YARDS S OF SIDE OF POINT, 17 YARDS E OF EXTREME END OF
 HV6603'POINT, AND NEAR CEDAR TREES.
 HV6603'
 HV6603'STATION MARK IS CENTER OF 3-INCH SQUARE WOODEN BOX.
 HV6603'
 HV6603'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6603'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6603'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6603'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6603'14.14 METERS (46.4 FEET) FROM STATION S 78 DEG 09
 HV6603'MIN E.  DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 HV6603'FOLLOWS--WEATHER VANE ON BARN, 3/4 MILE, S 45 DEG 25 MIN W.  SILO
 HV6603'AT PORTOBELLO, 3/4 MILE, N 32 DEG 00 MIN W.  CHIMNEY OF HOUSE, 1
 HV6603'MILE N 27 DEG 33 MIN W.  LEFT PEAK OF ROOF BETWEEN TWO CHIMNEYS,
 HV6603'1-1/8 MILES, N 16 DEG 14 MIN W.  LEFT CHIMNEY OF HOUSE ON PAGAN
 HV6603'POINT 1 1/2 MILES, N 03 DEG 06 MIN E.  NEAR PEAK OF ROOF OF
 HV6603'BROMES WHARF HOUSE, 1-3/8 MILES, N 21 DEG 18 MIN E.  NAIL IN
 HV6603'BLAZE IN 12-INCH CEDAR TREE 4.47 METERS (14.67 FEET), N 86
 HV6603'DEG 26 MIN E.  NAIL IN BLAZE IN 15-INCH CEDAR TREE 31.61
 HV6603'METERS (103.7 FEET), S 79 DEG 57 MIN E.  NAIL IN BLAZE IN 18-INCH
 HV6603'CEDAR TREE, 13.99 METERS (45.9 FEET), S 59 DEG 33 MIN E.
 HV6603
 HV6603                          STATION RECOVERY (1942)
 HV6603
 HV6603'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6603'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED FOR
 HV6603'BY TWO MEN FOR 1 HOUR, BUT NO TRACE OF THEM COULD BE FOUND.  ALL
 HV6603'LOCAL REFERENCES HAVE BEEN DESTROYED, AND THERE ARE INDICATIONS
 HV6603'THAT THE SHORE LINE HAS CHANGED CONSIDERABLY.  IT IS RECOMMENDED
 HV6603'THAT THIS STATION AND ITS REFERENCE MARK BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5873 ***********************************************************************
 HV5873  DESIGNATION -  CHANCELLOR
 HV5873  PID         -  HV5873
 HV5873  STATE/COUNTY-  MD/TALBOT
 HV5873  COUNTRY     -  US
 HV5873  USGS QUAD   -  CAMBRIDGE (2016)
 HV5873
 HV5873                         *CURRENT SURVEY CONTROL
 HV5873  ______________________________________________________________________
 HV5873* NAD 83(1991) POSITION- 38 34 43.76169(N) 076 01 34.43718(W)   ADJUSTED
 HV5873* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5873  ______________________________________________________________________
 HV5873  GEOID HEIGHT    -        -35.105 (meters)                     GEOID18
 HV5873  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 HV5873  HORZ ORDER      -  THIRD
 HV5873
 HV5873.The horizontal coordinates were established by classical geodetic methods
 HV5873.and adjusted by the National Geodetic Survey in January 1992.
 HV5873
 HV5873.The orthometric height was scaled from a topographic map.
 HV5873
 HV5873.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5873.GEOID18 height accuracy estimate available here.
 HV5873
 HV5873.Click photographs - Photos may exist for this station.
 HV5873
 HV5873.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5873
 HV5873. The following values were computed from the NAD 83(1991) position.
 HV5873
 HV5873;                    North         East     Units Scale Factor Converg.
 HV5873;SPC MD       -   101,705.417   484,847.045   MT  0.99996321   +0 36 40.2
 HV5873;SPC MD       -   333,678.52  1,590,702.35   sFT  0.99996321   +0 36 40.2
 HV5873;UTM  18      - 4,270,539.006   410,611.236   MT  0.99969840   -0 38 24.0
 HV5873
 HV5873!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5873!SPC MD       -   1.00000539  x   0.99996321  =   0.99996860
 HV5873!UTM  18      -   1.00000539  x   0.99969840  =   0.99970379
 HV5873
 HV5873:                Primary Azimuth Mark                     Grid Az
 HV5873:SPC MD       -  SHOAL                                    242 12 34.9
 HV5873:UTM  18      -  SHOAL                                    243 27 39.1
 HV5873
 HV5873_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1061170539(NAD 83)
 HV5873
 HV5873|---------------------------------------------------------------------|
 HV5873| PID    Reference Object                     Distance      Geod. Az  |
 HV5873|                                                           dddmmss.s |
 HV5873| HV5857 SHOAL                               APPROX. 2.7 KM 2424915.1 |
 HV5873|---------------------------------------------------------------------|
 HV5873
 HV5873                          SUPERSEDED SURVEY CONTROL
 HV5873
 HV5873  NAD 83(1986)-  38 34 43.75865(N)    076 01 34.45480(W) AD(       ) 3
 HV5873  NAD 27      -  38 34 43.31500(N)    076 01 35.67400(W) AD(       ) 3
 HV5873  USSD        -  38 34 43.71500(N)    076 01 35.47700(W) AD(       ) 3
 HV5873
 HV5873.Superseded values are not recommended for survey control.
 HV5873
 HV5873.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5873.See file dsdata.pdf to determine how the superseded data were derived.
 HV5873
 HV5873_MARKER: N = NAIL
 HV5873_SETTING: 33 = WOODEN OBJECT (DRIVEN IN A PILE, POLE, TREE OR STUMP)
 HV5873_SP_SET: CEDAR STUB
 HV5873_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5873
 HV5873  HISTORY     - Date     Condition        Report By
 HV5873  HISTORY     - 1900     MONUMENTED       CGS
 HV5873  HISTORY     - 1909     SEE DESCRIPTION  CGS
 HV5873  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV5873
 HV5873                          STATION DESCRIPTION
 HV5873
 HV5873'DESCRIBED BY COAST AND GEODETIC SURVEY 1909
 HV5873'ON THE NORTHERN SHORE OF CHOPTANK RIVER, ON CHANCELLORS POINT,
 HV5873'ABOUT 3/4 MILE N OF ENTRANCE TO HURST CREEK, AND 3/4 MILE SE OF
 HV5873'ENTRANCE TO BOLINGBROKE CREEK.  STATION IS ON SAND AND GRASS
 HV5873'POINT, ABOUT 1 FOOT ABOVE HIGH WATER, 35 YARDS W OF SHORE, 35
 HV5873'YARDS NE OF SHORE, 60 YARDS N BY W OF EXTREME END OF POINT, 13
 HV5873'YARDS S OF LINE OF CEDAR STUMPS, 27 YARDS SE OF LARGE LONE PINE
 HV5873'TREE AND ALMOST ON RANGE WITH CAMBRIDGE STANDPIPE AND LEFT PEAK OF
 HV5873'HOSPITAL.  STATION MARKED BY NAIL IN CEDAR STUB IN CENTER OF
 HV5873'4-INCH TILE PIPE WITH TOP FLUSH WITH SURFACE OF GROUND. REFERENCE
 HV5873'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5873'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5873'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5873'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 4.70
 HV5873'METERS (15.42 FEET) FROM STATION N 31 DEG 31 MIN W.  DISTANCES AND
 HV5873'BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 HV5873'FOLLOWS--CHIMNEY ON LEFT END OF HOUSE, 1-1/4 MILES, S 0 DEG 44
 HV5873'MIN W.  CHIMNEY OF HOUSE, 1-5/8 MILES, S 46 DEG 52 MIN W.  NAIL IN
 HV5873'BLAZE IN SMALL PINE TREE, 23.26 METERS (76.3 FEET), S 68 DEG 5
 HV5873'MIN W.  LEFT PEAK OF HOSPITAL 2-1/4 MILES, S 77 DEG 6 MIN W. NAIL
 HV5873'IN BLAZE IN 16-INCH LONE PINE TREE, 24.74 METERS (81.2 FEET) N 31
 HV5873'DEG 0 MIN W. SE CORNER OF SQUARE CUPOLA 350 YARDS, N 13 DEG 45
 HV5873'MIN E.  NAIL IN BLAZE IN 16-INCH CEDAR STUMP, 12.40 METERS (40.7
 HV5873'FEET), N 20 DEG 33 MIN E.  CHIMNEY OF HOUSE, 1-1/4 MILES, S 65
 HV5873'DEG 22 MIN E. NEAR PEAK OF HOUSE, 1-1/8 MILES, S 36 DEG 7 MIN E.
 HV5873
 HV5873                          STATION RECOVERY (1930)
 HV5873
 HV5873'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV5873'NO TRACE.  SAND PILES IN EVIDENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6508 ***********************************************************************
 JV6508  DESIGNATION -  CHANGE RESET
 JV6508  PID         -  JV6508
 JV6508  STATE/COUNTY-  MD/BALTIMORE
 JV6508  COUNTRY     -  US
 JV6508  USGS QUAD   -  COCKEYSVILLE (2016)
 JV6508
 JV6508                         *CURRENT SURVEY CONTROL
 JV6508  ______________________________________________________________________
 JV6508* NAD 83(1991) POSITION- 39 25 10.49577(N) 076 38 19.55230(W)   ADJUSTED
 JV6508* NAVD 88 ORTHO HEIGHT -   101.53  (+/-2cm)      333.1   (feet) VERTCON3
 JV6508  ______________________________________________________________________
 JV6508  GEOID HEIGHT    -        -32.472 (meters)                     GEOID18
 JV6508  LAPLACE CORR    -         -4.39  (seconds)                    DEFLEC18
 JV6508  HORZ ORDER      -  THIRD
 JV6508  VERT ORDER      -  THIRD ? (See Below)
 JV6508
 JV6508.The horizontal coordinates were established by classical geodetic methods
 JV6508.and adjusted by the National Geodetic Survey in January 1992.
 JV6508
 JV6508.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6508.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6508
 JV6508.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6508.GEOID18 height accuracy estimate available here.
 JV6508
 JV6508.The vertical order pertains to the NGVD 29 superseded value.
 JV6508
 JV6508.Click photographs - Photos may exist for this station.
 JV6508
 JV6508.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6508
 JV6508. The following values were computed from the NAD 83(1991) position.
 JV6508
 JV6508;                    North         East     Units Scale Factor Converg.
 JV6508;SPC MD       -   194,648.108   431,106.631   MT  0.99999482   +0 13 36.2
 JV6508;SPC MD       -   638,608.00  1,414,389.01   sFT  0.99999482   +0 13 36.2
 JV6508;UTM  18      - 4,364,620.955   358,934.645   MT  0.99984501   -1 02 26.8
 JV6508
 JV6508!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6508!SPC MD       -   0.99998917  x   0.99999482  =   0.99998399
 JV6508!UTM  18      -   0.99998917  x   0.99984501  =   0.99983418
 JV6508
 JV6508:                Primary Azimuth Mark                     Grid Az
 JV6508:SPC MD       -  BALTIMORE RADIO WCAO N MAST              243 57 49.1
 JV6508:UTM  18      -  BALTIMORE RADIO WCAO N MAST              245 13 52.1
 JV6508
 JV6508_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5893464620(NAD 83)
 JV6508
 JV6508|---------------------------------------------------------------------|
 JV6508| PID    Reference Object                     Distance      Geod. Az  |
 JV6508|                                                           dddmmss.s |
 JV6508| JV1254 CHANGE RM 4                           7.754 METERS 01521     |
 JV6508| JV1252 CHANGE RM 1                          11.077 METERS 06046     |
 JV6508| CS5362 UNIDENTIFIED CHURCH SPIRE                          0844956.7 |
 JV6508| JV6510 CHANGE RM 7                          19.023 METERS 19444     |
 JV6508| JV5646 BALTIMORE RADIO WCAO N MAST         APPROX. 7.8 KM 2441125.3 |
 JV6508| JV6509 CHANGE RM 6                          97.223 METERS 28607     |
 JV6508| JV4043 CHANGE RM 5                          94.915 METERS 28731     |
 JV6508| JV1253 CHANGE RM 3                          96.396 METERS 28735     |
 JV6508| JV1250 CHANGE RM 2                          11.482 METERS 32631     |
 JV6508|---------------------------------------------------------------------|
 JV6508
 JV6508                          SUPERSEDED SURVEY CONTROL
 JV6508
 JV6508  NAD 83(1986)-  39 25 10.49225(N)    076 38 19.55939(W) AD(       ) 3
 JV6508  NAD 27      -  39 25 10.10890(N)    076 38 20.66600(W) AD(       ) 2
 JV6508  NGVD 29             101.75   (m)          333.8    (f) LEVELING    3  
 JV6508
 JV6508.Superseded values are not recommended for survey control.
 JV6508
 JV6508.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6508.See file dsdata.pdf to determine how the superseded data were derived.
 JV6508
 JV6508_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6508_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6508_SP_SET: MEDIAN BARRIER
 JV6508_STAMPING: CHANGE 1959 1988
 JV6508_MARK LOGO: NGS
 JV6508_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6508_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6508_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6508+SATELLITE: SATELLITE OBSERVATIONS - 1988
 JV6508
 JV6508  HISTORY     - Date     Condition        Report By
 JV6508  HISTORY     - 1988     MONUMENTED       NGS
 JV6508
 JV6508                          STATION DESCRIPTION
 JV6508
 JV6508'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 JV6508'TO REACH THE MARK FROM A POINT WHERE INTERSTATE HIGHWAY 695 PASSES
 JV6508'OVER INTERSTATE HIGHWAY 83 (JONES FALLS EXPRESS WAY) AT EXIT 23 NEAR
 JV6508'BROOKLANDVILLE, GO EAST ON INTERSTATE HIGHWAY 695 FOR 2.65 KM
 JV6508'(1.65 MI) TO MARK ON THE LEFT ATOP THE SOUTH EDGE OF THE CONCRETE
 JV6508'FILLED MEDIAN BARRIER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV6508'
 JV6508'IT IS SET IN THE CONCRETE MEDIAN WHICH PROJECTS ABOUT 1.0 M (3.3 FT)
 JV6508'ABOVE THE SURFACE OF THE ROAD, 62.34 M (204.5 FT) WEST OF THE MOST
 JV6508'WESTERLY POINT OF A PILLAR WHICH SUPPORTS THE OVERHEAD EXIT RAMP FOR
 JV6508'THE SOUTH BOUND LANE OF INTERSTATE HIGHWAY 83 ONTO THE EAST BOUND LANE
 JV6508'OF INTERSTATE HIGHWAY 695, 9.6 M (31.5 FT) NORTH OF THE CENTER OF THE
 JV6508'EAST BOUND LANE OF INTERSTATE HIGHWAY 695, 3.72 M (12.2 FT) SOUTH OF
 JV6508'THE MOST NORTH EDGE OF THE CONCRETE FILLED MEDIAN BARRIER AND 0.1 M
 JV6508'(0.3 FT) NORTH OF ITS SOUTH EDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6509 ***********************************************************************
 JV6509  DESIGNATION -  CHANGE RM 6
 JV6509  PID         -  JV6509
 JV6509  STATE/COUNTY-  MD/BALTIMORE
 JV6509  COUNTRY     -  US
 JV6509  USGS QUAD   -  COCKEYSVILLE (2016)
 JV6509
 JV6509                         *CURRENT SURVEY CONTROL
 JV6509  ______________________________________________________________________
 JV6509* NAD 83(1991) POSITION- 39 25 11.37081(N) 076 38 23.45708(W)   ADJUSTED
 JV6509* NAVD 88 ORTHO HEIGHT -    98.23  (+/-2cm)      322.3   (feet) VERTCON3
 JV6509  ______________________________________________________________________
 JV6509  GEOID HEIGHT    -        -32.469 (meters)                     GEOID18
 JV6509  LAPLACE CORR    -         -4.42  (seconds)                    DEFLEC18
 JV6509  HORZ ORDER      -  THIRD
 JV6509  VERT ORDER      -  THIRD ? (See Below)
 JV6509
 JV6509.The horizontal coordinates were established by classical geodetic methods
 JV6509.and adjusted by the National Geodetic Survey in January 1992.
 JV6509
 JV6509.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6509.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6509
 JV6509.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6509.GEOID18 height accuracy estimate available here.
 JV6509
 JV6509.The vertical order pertains to the NGVD 29 superseded value.
 JV6509
 JV6509.Click photographs - Photos may exist for this station.
 JV6509
 JV6509.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6509
 JV6509. The following values were computed from the NAD 83(1991) position.
 JV6509
 JV6509;                    North         East     Units Scale Factor Converg.
 JV6509;SPC MD       -   194,674.725   431,013.123   MT  0.99999486   +0 13 33.8
 JV6509;SPC MD       -   638,695.33  1,414,082.22   sFT  0.99999486   +0 13 33.8
 JV6509;UTM  18      - 4,364,649.630   358,841.763   MT  0.99984533   -1 02 29.3
 JV6509
 JV6509!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6509!SPC MD       -   0.99998968  x   0.99999486  =   0.99998454
 JV6509!UTM  18      -   0.99998968  x   0.99984533  =   0.99983501
 JV6509
 JV6509_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5884164649(NAD 83)
 JV6509
 JV6509                          SUPERSEDED SURVEY CONTROL
 JV6509
 JV6509  NAD 83(1986)-  39 25 11.36729(N)    076 38 23.46415(W) AD(       ) 3
 JV6509  NGVD 29              98.45   (m)          323.0    (f) LEVELING    3  
 JV6509
 JV6509.Superseded values are not recommended for survey control.
 JV6509
 JV6509.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6509.See file dsdata.pdf to determine how the superseded data were derived.
 JV6509
 JV6509_MARKER: DR = REFERENCE MARK DISK
 JV6509_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6509_SP_SET: BRIDGE DECK
 JV6509_STAMPING: CHANGE 1959 NO 6 1986
 JV6509_MARK LOGO: NGS
 JV6509_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6509_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6509_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6509+SATELLITE: SATELLITE OBSERVATIONS - 1986
 JV6509
 JV6509  HISTORY     - Date     Condition        Report By
 JV6509  HISTORY     - 1986     MONUMENTED       NGS
 JV6509
 JV6509                          STATION DESCRIPTION
 JV6509
 JV6509'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 JV6509'TO REACH THE MARK FROM A POINT WHERE INTERSTATE HIGHWAY 695 PASSES
 JV6509'OVER INTERSTATE HIGHWAY 83 (JONES FALLS EXPRESS WAY) AT EXIT 23 NEAR
 JV6509'BROOKLANDVILLE, GO EAST ON INTERSTATE HIGHWAY 695 FOR 2.3 KM
 JV6509'(1.45 MI) TO THE EAST END OF A BRIDGE AND THE MARKER ON THE LEFT NEAR
 JV6509'THE MOST EASTERLY END OF AN OPEN AREA BETWEEN THE MEDIAN BARRIERS.
 JV6509'OWNERSHIP--ROAD RIGHT-OF-WAY, IN THE MEDIAN ON THE BRIDGE DECK,
 JV6509'159.6 M (523.6 FT) WEST OF THE MOST WESTERLY POINT OF A LARGE
 JV6509'CONCRETE PILLAR WHICH SUPPORTS THE OVERHEAD EXIT RAMP FOR THE SOUTH
 JV6509'BOUND LANE OF INTERSTATE HIGHWAY 83 ONTO THE EAST BOUND LANE OF
 JV6509'INTERSTATE HIGHWAY 695, 12.06 M (39.6 FT) EAST OF THE MOST EASTERLY
 JV6509'EXPANSION JOINT ON THE BRIDGE, 0.52 M (1.7 FT) WEST OF THE WEST EDGE
 JV6509'OF AN AREA WHERE THE CENTER STRIP BETWEEN THE MEDIAN BARRIERS IS
 JV6509'FILLED WITH CONCRETE, 2.14 M (7.0 FT) SOUTH OF THE NORTH BARRIER WALL
 JV6509'AND 1.36 M (4.5 FT) NORTH OF THE SOUTH BARRIER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6510 ***********************************************************************
 JV6510  DESIGNATION -  CHANGE RM 7
 JV6510  PID         -  JV6510
 JV6510  STATE/COUNTY-  MD/BALTIMORE
 JV6510  COUNTRY     -  US
 JV6510  USGS QUAD   -  COCKEYSVILLE (2016)
 JV6510
 JV6510                         *CURRENT SURVEY CONTROL
 JV6510  ______________________________________________________________________
 JV6510* NAD 83(1991) POSITION- 39 25 09.89922(N) 076 38 19.75450(W)   ADJUSTED
 JV6510* NAVD 88 ORTHO HEIGHT -   101.05  (+/-2cm)      331.5   (feet) VERTCON3
 JV6510  ______________________________________________________________________
 JV6510  GEOID HEIGHT    -        -32.472 (meters)                     GEOID18
 JV6510  LAPLACE CORR    -         -4.38  (seconds)                    DEFLEC18
 JV6510  HORZ ORDER      -  THIRD
 JV6510  VERT ORDER      -  THIRD ? (See Below)
 JV6510
 JV6510.The horizontal coordinates were established by classical geodetic methods
 JV6510.and adjusted by the National Geodetic Survey in January 1992.
 JV6510
 JV6510.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6510.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6510
 JV6510.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6510.GEOID18 height accuracy estimate available here.
 JV6510
 JV6510.The vertical order pertains to the NGVD 29 superseded value.
 JV6510
 JV6510.Click photographs - Photos may exist for this station.
 JV6510
 JV6510.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6510
 JV6510. The following values were computed from the NAD 83(1991) position.
 JV6510
 JV6510;                    North         East     Units Scale Factor Converg.
 JV6510;SPC MD       -   194,629.691   431,101.867   MT  0.99999479   +0 13 36.1
 JV6510;SPC MD       -   638,547.58  1,414,373.38   sFT  0.99999479   +0 13 36.1
 JV6510;UTM  18      - 4,364,602.652   358,929.476   MT  0.99984503   -1 02 26.9
 JV6510
 JV6510!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6510!SPC MD       -   0.99998924  x   0.99999479  =   0.99998403
 JV6510!UTM  18      -   0.99998924  x   0.99984503  =   0.99983427
 JV6510
 JV6510_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5892964602(NAD 83)
 JV6510
 JV6510                          SUPERSEDED SURVEY CONTROL
 JV6510
 JV6510  NAD 83(1986)-  39 25 09.89569(N)    076 38 19.76159(W) AD(       ) 3
 JV6510  NGVD 29             101.27   (m)          332.3    (f) LEVELING    3  
 JV6510
 JV6510.Superseded values are not recommended for survey control.
 JV6510
 JV6510.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6510.See file dsdata.pdf to determine how the superseded data were derived.
 JV6510
 JV6510_MARKER: Q = CHISELED SQUARE
 JV6510_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6510_SP_SET: ROAD JERSEY BARRIER
 JV6510_MARK LOGO: NGS
 JV6510_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6510_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6510_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6510+SATELLITE: SATELLITE OBSERVATIONS - 1988
 JV6510
 JV6510  HISTORY     - Date     Condition        Report By
 JV6510  HISTORY     - 1988     MONUMENTED       NGS
 JV6510
 JV6510                          STATION DESCRIPTION
 JV6510
 JV6510'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 JV6510'TO REACH THE MARK FROM A POINT WHERE INTERSTATE HIGHWAY 695 PASSES
 JV6510'OVER INTERSTATE HIGHWAY 83 (JONES FALLS EXPRESS WAY) AT EXIT 23 NEAR
 JV6510'BROOKLANDVILLE, GO EAST ON INTERSTATE HIGHWAY 695 FOR 2.4 KM
 JV6510'(1.50 MI) TO MARK ON THE RIGHT ATOP THE JERSEY BARRIER ALONG THE SOUTH
 JV6510'SIDE OF THE HIGHWAY.  OWNERSHIP--ROAD RIGHT-OF-WAY, IN JERSEY BARRIER
 JV6510'PROJECTING 1.0 M (3.3 FT) ABOVE THE SURFACE OF THE ROAD,   9.59 M
 JV6510'(31.5 FT) SOUTH OF THE CENTER OF THE EAST BOUND LANE OF INTERSTATE
 JV6510'HIGHWAY 695 AND 98 M (321.5 FT) OF THE EAST END OF A BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5490 ***********************************************************************
 JV5490  DESIGNATION -  CHANNEL USE 1915
 JV5490  PID         -  JV5490
 JV5490  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5490  COUNTRY     -  US
 JV5490  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5490
 JV5490                         *CURRENT SURVEY CONTROL
 JV5490  ______________________________________________________________________
 JV5490* NAD 83(1991) POSITION- 39 15 18.45304(N) 076 36 56.01086(W)   ADJUSTED
 JV5490* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV5490  ______________________________________________________________________
 JV5490  GEOID HEIGHT    -        -32.773 (meters)                     GEOID18
 JV5490  LAPLACE CORR    -         -5.40  (seconds)                    DEFLEC18
 JV5490  HORZ ORDER      -  THIRD
 JV5490
 JV5490.The horizontal coordinates were established by classical geodetic methods
 JV5490.and adjusted by the National Geodetic Survey in January 1992.
 JV5490
 JV5490.The orthometric height was scaled from a topographic map.
 JV5490
 JV5490.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5490.GEOID18 height accuracy estimate available here.
 JV5490
 JV5490.Click photographs - Photos may exist for this station.
 JV5490
 JV5490.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5490
 JV5490. The following values were computed from the NAD 83(1991) position.
 JV5490
 JV5490;                    North         East     Units Scale Factor Converg.
 JV5490;SPC MD       -   176,398.492   433,181.814   MT  0.99997171   +0 14 28.6
 JV5490;SPC MD       -   578,734.05  1,421,197.33   sFT  0.99997171   +0 14 28.6
 JV5490;UTM  18      - 4,346,332.526   360,606.003   MT  0.99983925   -1 01 20.8
 JV5490
 JV5490!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5490!SPC MD       -   1.00000377  x   0.99997171  =   0.99997548
 JV5490!UTM  18      -   1.00000377  x   0.99983925  =   0.99984302
 JV5490
 JV5490:                Primary Azimuth Mark                     Grid Az
 JV5490:SPC MD       -  HAN USE 1915                             003 36 22.2
 JV5490:UTM  18      -  HAN USE 1915                             004 52 11.6
 JV5490
 JV5490_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6060646332(NAD 83)
 JV5490
 JV5490|---------------------------------------------------------------------|
 JV5490| PID    Reference Object                     Distance      Geod. Az  |
 JV5490|                                                           dddmmss.s |
 JV5490| JV5568 HAN USE 1915                        APPROX. 0.6 KM 0035050.8 |
 JV5490| JV5565 MARYLAND CASUALTY TOWER             APPROX. 3.9 KM 0052050.3 |
 JV5490|---------------------------------------------------------------------|
 JV5490
 JV5490                          SUPERSEDED SURVEY CONTROL
 JV5490
 JV5490  NAD 83(1986)-  39 15 18.44953(N)    076 36 56.01986(W) AD(       ) 3
 JV5490  NAD 27      -  39 15 18.06700(N)    076 36 57.13400(W) AD(       ) 3
 JV5490  USSD        -  39 15 18.43100(N)    076 36 56.97300(W) AD(       ) 3
 JV5490
 JV5490.Superseded values are not recommended for survey control.
 JV5490
 JV5490.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5490.See file dsdata.pdf to determine how the superseded data were derived.
 JV5490
 JV5490_MARKER: DD = SURVEY DISK
 JV5490_SETTING: 0 = UNSPECIFIED SETTING
 JV5490_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5490
 JV5490  HISTORY     - Date     Condition        Report By
 JV5490  HISTORY     - 1915     MONUMENTED       USACE
 JV5490  HISTORY     - 1934     MARK NOT FOUND   CGS
 JV5490
 JV5490                          STATION DESCRIPTION
 JV5490
 JV5490'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1915
 JV5490'STATION IS ABOUT 150 FEET FROM THE NE CORNER OF ARIEL BOAT CLUB,
 JV5490'IN BROENING PARK, ON THE CENTER LINE OF FERRY BAR CHANNEL EXTENDED,
 JV5490'AND ABOUT 2 FEET IN FRONT OF AN 8-INCH POPLAR TREE.
 JV5490'
 JV5490'THE STATION IS MARKED BY A CONCRETE MONUMENT CENTERED BY A
 JV5490'STANDARD U.S.E. BRONZE MARKER.  THE MONUMENT PROJECTS 6 INCHES
 JV5490'ABOVE SURFACE OF THE GROUND.
 JV5490
 JV5490                          STATION RECOVERY (1934)
 JV5490
 JV5490'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5490'UNABLE TO LOCATE STATION.  REFERENCE TREE WITH TRIANGLE CUT IN
 JV5490'TRUNK LOCATED.  APPARENTLY DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4764 ***********************************************************************
 AB4764  DESIGNATION -  CHANTER
 AB4764  PID         -  AB4764
 AB4764  STATE/COUNTY-  MD/CARROLL
 AB4764  COUNTRY     -  US
 AB4764  USGS QUAD   -  WINFIELD (2016)
 AB4764
 AB4764                         *CURRENT SURVEY CONTROL
 AB4764  ______________________________________________________________________
 AB4764* NAD 83(2011) POSITION- 39 28 13.96955(N) 077 01 57.05096(W)   ADJUSTED
 AB4764* NAD 83(2011) ELLIP HT-   217.515 (meters)        (06/27/12)   ADJUSTED
 AB4764* NAD 83(2011) EPOCH   -  2010.00
 AB4764* NAVD 88 ORTHO HEIGHT -   249.5   (meters)      819.    (feet) GPS OBS
 AB4764  ______________________________________________________________________
 AB4764  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4764  GEOID HEIGHT    -        -32.033 (meters)                     GEOID99
 AB4764  GEOID HEIGHT    -        -32.023 (meters)                     GEOID18
 AB4764  NAD 83(2011) X  -  1,106,384.234 (meters)                     COMP
 AB4764  NAD 83(2011) Y  - -4,804,714.561 (meters)                     COMP
 AB4764  NAD 83(2011) Z  -  4,032,918.042 (meters)                     COMP
 AB4764  LAPLACE CORR    -          1.15  (seconds)                    DEFLEC18
 AB4764
 AB4764  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4764  Standards:
 AB4764         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4764            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4764  -------------------------------------------------------------------
 AB4764  NETWORK    4.53   9.88           1.93   1.70   5.04     -0.34076038
 AB4764  -------------------------------------------------------------------
 AB4764  Click here for local accuracies and other accuracy information.
 AB4764
 AB4764.The horizontal coordinates were established by GPS observations
 AB4764.and adjusted by the National Geodetic Survey in June 2012.
 AB4764
 AB4764.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4764.been affixed to the stable North American tectonic plate. See 
 AB4764.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4764
 AB4764.The horizontal coordinates are valid at the epoch date displayed above
 AB4764.which is a decimal equivalence of Year/Month/Day.
 AB4764
 AB4764.The orthometric height was determined by GPS observations and a
 AB4764.high-resolution geoid model.
 AB4764
 AB4764.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4764.GEOID18 height accuracy estimate available here.
 AB4764
 AB4764.Click photographs - Photos may exist for this station.
 AB4764
 AB4764.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4764
 AB4764.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4764
 AB4764.The ellipsoidal height was determined by GPS observations
 AB4764.and is referenced to NAD 83.
 AB4764
 AB4764. The following values were computed from the NAD 83(2011) position.
 AB4764
 AB4764;                    North         East     Units Scale Factor Converg.
 AB4764;SPC MD       -   200,245.386   397,202.156   MT  1.00000366   -0 01 13.5
 AB4764;SPC MD       -   656,971.74  1,303,154.07   sFT  1.00000366   -0 01 13.5
 AB4764;UTM  18      - 4,370,967.547   325,165.589   MT  0.99997636   -1 17 32.5
 AB4764
 AB4764!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4764!SPC MD       -   0.99996588  x   1.00000366  =   0.99996954
 AB4764!UTM  18      -   0.99996588  x   0.99997636  =   0.99994224
 AB4764
 AB4764:                Primary Azimuth Mark                     Grid Az
 AB4764:SPC MD       -  CHANTER AZ MK                            285 00 51.4
 AB4764:UTM  18      -  CHANTER AZ MK                            286 17 10.4
 AB4764
 AB4764_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2516570967(NAD 83)
 AB4764
 AB4764|---------------------------------------------------------------------|
 AB4764| PID    Reference Object                     Distance      Geod. Az  |
 AB4764|                                                           dddmmss.s |
 AB4764| AB4778 CHANTER AZ MK                       APPROX. 0.5 KM 2845937.9 |
 AB4764|---------------------------------------------------------------------|
 AB4764
 AB4764                          SUPERSEDED SURVEY CONTROL
 AB4764
 AB4764  NAD 83(2007)-  39 28 13.96979(N)    077 01 57.05173(W) AD(2002.00) 0
 AB4764  ELLIP H (02/10/07)  217.542  (m)                       GP(2002.00)    
 AB4764  ELLIP H (08/30/02)  217.518  (m)                       GP(       ) 4 2
 AB4764  NAD 83(1991)-  39 28 13.96969(N)    077 01 57.05240(W) AD(       ) 1
 AB4764  ELLIP H (07/03/96)  217.419  (m)                       GP(       ) 1 1
 AB4764  NAVD 88 (07/03/96)  249.5    (m)  GEOID93  model used  GPS OBS        
 AB4764
 AB4764.Superseded values are not recommended for survey control.
 AB4764
 AB4764.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4764.See file dsdata.pdf to determine how the superseded data were derived.
 AB4764
 AB4764_MARKER: DD = SURVEY DISK
 AB4764_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4764_STAMPING: CHANTER 1995
 AB4764_MARK LOGO: MD-013
 AB4764_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4764_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4764+STABILITY: SURFACE MOTION
 AB4764_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4764+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4764
 AB4764  HISTORY     - Date     Condition        Report By
 AB4764  HISTORY     - 1995     MONUMENTED       MD-013
 AB4764
 AB4764                          STATION DESCRIPTION
 AB4764
 AB4764'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4764'STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) SOUTH OF WESTMINSTER AND
 AB4764'ABOUT 6.5 MI (10.5 KM) SOUTHEAST OF NEW WINDSOR. TO REACH STATION FROM
 AB4764'THE INTERSECTION OF MD ROUTE 97 (WASHINGTON ROAD) AND MD ROUTE 26
 AB4764'(LIBERTY ROAD) GO NORTH ON MD ROUTE 97 FOR 1.85 MI (2.98 KM) TO THE
 AB4764'INTERSECTION WITH BARTHOLOW ROAD. TURN LEFT ON BARTHOLOW ROAD AND GO
 AB4764'WEST FOR 0.15 MI (0.24 KM) TO THE INTERSECTION WITH MD ROUTE 854 (OLD
 AB4764'WASHINGTON ROAD). TURN RIGHT ON MD ROUTE 854 AND GO NORTH FOR 0.25 MI
 AB4764'(0.40 KM) TO THE INTERSECTION WITH BEAR BRANCH ROAD. TURN LEFT AND GO
 AB4764'WEST ON BEAR BRANCH ROAD FOR 0.6 MI (1.0 KM) TO THE INTERSECTION WITH
 AB4764'OAK TREE ROAD. TURN RIGHT ON OAK TREE ROAD AND GO NORTH FOR 0.05 MI
 AB4764'(0.08 KM) THE INTERSECTION WITH BEAR BRANCH ROAD. TURN LEFT ON BEAR
 AB4764'BRANCH ROAD AND GO WEST FOR 0.7 MI (1.1 KM) TO THE INTERSECTION WITH
 AB4764'CHANTER DRIVE. TURN LEFT ON CHANTER DRIVE AND GO SOUTHWEST FOR 0.6 MI
 AB4764'(1.0 KM) TO THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP
 AB4764'OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AB4764'24.0 FT (7.3 M) NORTH OF THE CENTERLNE OF THE ROAD, 4.2 FT (1.3 M)
 AB4764'SOUTHWEST OF A WIRE FENCE, 14.8 FT (4.5 M) SOUTHEAST OF A MONUMENT
 AB4764'STAMPED CHANTER RM-1 AND 112.0 FT (34.1 M) EAST OF THE CENTERLINE OF A
 AB4764'DRIVEWAY LEADING NORTH TO HOUSE NO. 842.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4778 ***********************************************************************
 AB4778  DESIGNATION -  CHANTER AZ MK
 AB4778  PID         -  AB4778
 AB4778  STATE/COUNTY-  MD/CARROLL
 AB4778  COUNTRY     -  US
 AB4778  USGS QUAD   -  WINFIELD (2016)
 AB4778
 AB4778                         *CURRENT SURVEY CONTROL
 AB4778  ______________________________________________________________________
 AB4778* NAD 83(2011) POSITION- 39 28 18.23758(N) 077 02 17.61408(W)   ADJUSTED
 AB4778* NAD 83(2011) ELLIP HT-   211.087 (meters)        (06/27/12)   ADJUSTED
 AB4778* NAD 83(2011) EPOCH   -  2010.00
 AB4778* NAVD 88 ORTHO HEIGHT -   243.1   (meters)      798.    (feet) GPS OBS
 AB4778  ______________________________________________________________________
 AB4778  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4778  GEOID HEIGHT    -        -32.040 (meters)                     GEOID99
 AB4778  GEOID HEIGHT    -        -32.029 (meters)                     GEOID18
 AB4778  NAD 83(2011) X  -  1,105,885.351 (meters)                     COMP
 AB4778  NAD 83(2011) Y  - -4,804,738.456 (meters)                     COMP
 AB4778  NAD 83(2011) Z  -  4,033,015.567 (meters)                     COMP
 AB4778  LAPLACE CORR    -          1.37  (seconds)                    DEFLEC18
 AB4778
 AB4778  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4778  Standards:
 AB4778         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4778            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4778  -------------------------------------------------------------------
 AB4778  NETWORK    3.99   8.02           1.71   1.49   4.09     -0.31515288
 AB4778  -------------------------------------------------------------------
 AB4778  Click here for local accuracies and other accuracy information.
 AB4778
 AB4778.The horizontal coordinates were established by GPS observations
 AB4778.and adjusted by the National Geodetic Survey in June 2012.
 AB4778
 AB4778.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4778.been affixed to the stable North American tectonic plate. See 
 AB4778.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4778
 AB4778.The horizontal coordinates are valid at the epoch date displayed above
 AB4778.which is a decimal equivalence of Year/Month/Day.
 AB4778
 AB4778.The orthometric height was determined by GPS observations and a
 AB4778.high-resolution geoid model.
 AB4778
 AB4778.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4778.GEOID18 height accuracy estimate available here.
 AB4778
 AB4778.Click photographs - Photos may exist for this station.
 AB4778
 AB4778.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4778
 AB4778.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4778
 AB4778.The ellipsoidal height was determined by GPS observations
 AB4778.and is referenced to NAD 83.
 AB4778
 AB4778. The following values were computed from the NAD 83(2011) position.
 AB4778
 AB4778;                    North         East     Units Scale Factor Converg.
 AB4778;SPC MD       -   200,377.204   396,710.695   MT  1.00000387   -0 01 26.4
 AB4778;SPC MD       -   657,404.21  1,301,541.67   sFT  1.00000387   -0 01 26.4
 AB4778;UTM  18      - 4,371,110.238   324,677.189   MT  0.99997846   -1 17 45.7
 AB4778
 AB4778!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4778!SPC MD       -   0.99996688  x   1.00000387  =   0.99997075
 AB4778!UTM  18      -   0.99996688  x   0.99997846  =   0.99994534
 AB4778
 AB4778:                Primary Azimuth Mark                     Grid Az
 AB4778:SPC MD       -  CHANTER                                  105 00 51.3
 AB4778:UTM  18      -  CHANTER                                  106 17 10.6
 AB4778
 AB4778_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2467771110(NAD 83)
 AB4778
 AB4778|---------------------------------------------------------------------|
 AB4778| PID    Reference Object                     Distance      Geod. Az  |
 AB4778|                                                           dddmmss.s |
 AB4778| AB4764 CHANTER                             APPROX. 0.5 KM 1045924.9 |
 AB4778|---------------------------------------------------------------------|
 AB4778
 AB4778                          SUPERSEDED SURVEY CONTROL
 AB4778
 AB4778  NAD 83(2007)-  39 28 18.23782(N)    077 02 17.61486(W) AD(2002.00) 0
 AB4778  ELLIP H (02/10/07)  211.114  (m)                       GP(2002.00)    
 AB4778  ELLIP H (08/30/02)  211.090  (m)                       GP(       ) 4 2
 AB4778  NAD 83(1991)-  39 28 18.23772(N)    077 02 17.61552(W) AD(       ) 1
 AB4778  ELLIP H (07/03/96)  210.992  (m)                       GP(       ) 1 1
 AB4778  NAVD 88 (07/03/96)  243.1    (m)  GEOID93  model used  GPS OBS        
 AB4778
 AB4778.Superseded values are not recommended for survey control.
 AB4778
 AB4778.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4778.See file dsdata.pdf to determine how the superseded data were derived.
 AB4778
 AB4778_MARKER: DD = SURVEY DISK
 AB4778_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4778_STAMPING: CHANTER AZI 1995
 AB4778_MARK LOGO: MD-013
 AB4778_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4778_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4778+STABILITY: SURFACE MOTION
 AB4778_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4778+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4778
 AB4778  HISTORY     - Date     Condition        Report By
 AB4778  HISTORY     - 1995     MONUMENTED       MD-013
 AB4778
 AB4778                          STATION DESCRIPTION
 AB4778
 AB4778'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4778'STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) SOUTH OF WESTMINSTER AND
 AB4778'ABOUT 6.0 MI (9.7 KM) SOUTHEAST OF NEW WINDSOR.
 AB4778'
 AB4778'TO REACH THE STATION FROM THE INTERSECTION OF MD ROUTE 97 (WASHINGTON
 AB4778'ROAD) AND MD ROUTE 26 (LIBERTY ROAD), GO NORTH ON MD ROUTE 97 FOR
 AB4778'1.85 MI (2.98 KM) TO THE INTERSECTION WITH BARTHOLOW ROAD.  TURN LEFT
 AB4778'ON BARTHOLOW ROAD AND GO WEST FOR 0.15 MI (0.24 KM) TO THE
 AB4778'INTERSECTION WITH MD ROUTE 854 (OLD WASHINGTON ROAD).  TURN RIGHT ON
 AB4778'MD ROUTE 854 AND GO NORTH FOR 0.25 MI (0.40 KM) TO THE INTERSECTION
 AB4778'WITH BEAR BRANCH ROAD.  TURN LEFT AND GO WEST ON BEAR BRANCH ROAD FOR
 AB4778'0.6 MI (1.0 KM) TO THE INTERSECTION WITH OAK TREE ROAD.  TURN RIGHT ON
 AB4778'OAK TREE ROAD AND GO NORTH FOR 0.05 MI (0.08 KM) TO THE INTERSECTION
 AB4778'WITH BEAR BRANCH ROAD.  TURN LEFT ON BEAR BRANCH ROAD AND GO WEST FOR
 AB4778'1.3 MI (2.1 KM) TO THE INTERSECTION WITH SALEM BOTTOM ROAD.  TURN LEFT
 AB4778'ON SALEM BOTTOM ROAD AND GO SOUTH FOR 0.65 MI (1.05 KM) TO A PAVED
 AB4778'DRIVEWAY LEADING NORTHWEST TO CHINOOK WINDS (HOUSE NOS. 3751 AND
 AB4778'3760).  TURN RIGHT ON THE PAVED DRIVE AND GO NORTHWEST FOR 0.15 MI
 AB4778'(0.24 KM) TO THE STATION ON THE RIGHT.
 AB4778'
 AB4778'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4778'MONUMENT FLUSH WITH THE GROUND.  IT IS 12.0 FT (3.7 M) NORTHEAST OF
 AB4778'THE CENTERLINE OF THE DRIVEWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5645 ***********************************************************************
 HV5645  DESIGNATION -  CHAP
 HV5645  PID         -  HV5645
 HV5645  STATE/COUNTY-  MD/TALBOT
 HV5645  COUNTRY     -  US
 HV5645  USGS QUAD   -  EASTON (2016)
 HV5645
 HV5645                         *CURRENT SURVEY CONTROL
 HV5645  ______________________________________________________________________
 HV5645* NAD 83(1991) POSITION- 38 47 51.45879(N) 076 07 25.17448(W)   ADJUSTED
 HV5645* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5645  ______________________________________________________________________
 HV5645  GEOID HEIGHT    -        -34.532 (meters)                     GEOID18
 HV5645  LAPLACE CORR    -         -3.87  (seconds)                    DEFLEC18
 HV5645  HORZ ORDER      -  THIRD
 HV5645
 HV5645.The horizontal coordinates were established by classical geodetic methods
 HV5645.and adjusted by the National Geodetic Survey in January 1992.
 HV5645
 HV5645.The orthometric height was scaled from a topographic map.
 HV5645
 HV5645.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5645.GEOID18 height accuracy estimate available here.
 HV5645
 HV5645.Click photographs - Photos may exist for this station.
 HV5645
 HV5645.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5645
 HV5645. The following values were computed from the NAD 83(1991) position.
 HV5645
 HV5645;                    North         East     Units Scale Factor Converg.
 HV5645;SPC MD       -   125,906.616   476,125.077   MT  0.99995077   +0 33 00.1
 HV5645;SPC MD       -   413,078.62  1,562,087.02   sFT  0.99995077   +0 33 00.1
 HV5645;UTM  18      - 4,294,919.035   402,422.428   MT  0.99971725   -0 42 14.8
 HV5645
 HV5645!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5645!SPC MD       -   1.00000546  x   0.99995077  =   0.99995622
 HV5645!UTM  18      -   1.00000546  x   0.99971725  =   0.99972270
 HV5645
 HV5645:                Primary Azimuth Mark                     Grid Az
 HV5645:SPC MD       -  VILLA                                    118 19 52.5
 HV5645:UTM  18      -  VILLA                                    119 35 07.4
 HV5645
 HV5645_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0242294919(NAD 83)
 HV5645
 HV5645|---------------------------------------------------------------------|
 HV5645| PID    Reference Object                     Distance      Geod. Az  |
 HV5645|                                                           dddmmss.s |
 HV5645| HV5642 VILLA                               APPROX. 0.5 KM 1185252.6 |
 HV5645| HV5736 EASTON                              482.842 METERS 1950514.8 |
 HV5645| HV5734 DRAW                                473.885 METERS 2390442.2 |
 HV5645|---------------------------------------------------------------------|
 HV5645
 HV5645                          SUPERSEDED SURVEY CONTROL
 HV5645
 HV5645  NAD 83(1986)-  38 47 51.45429(N)    076 07 25.18870(W) AD(       ) 3
 HV5645  NAD 27      -  38 47 50.97300(N)    076 07 26.38500(W) AD(       ) 3
 HV5645  USSD        -  38 47 51.35800(N)    076 07 26.14700(W) AD(       ) 3
 HV5645
 HV5645.Superseded values are not recommended for survey control.
 HV5645
 HV5645.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5645.See file dsdata.pdf to determine how the superseded data were derived.
 HV5645
 HV5645_MARKER: H = DRILL HOLE
 HV5645_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5645_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5645
 HV5645  HISTORY     - Date     Condition        Report By
 HV5645  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5645  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5645  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV5645
 HV5645                          STATION DESCRIPTION
 HV5645
 HV5645'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5645'STATION IS ON THE NORTHWESTERN SHORE OF MILES RIVER, OPPOSITE THE
 HV5645'POINT BETWEEN GLEBE CREEK AND GOLDSBORO CREEK, AND ABOUT 1/4 MILE
 HV5645'NE OF MILES RIVER BRIDGE ON A POINT ABOUT 2 FEET ABOVE HIGH WATER,
 HV5645'5 YARDS W OF SHORE, 7 YARDS NE OF SHORE, AND 9 YARDS NNW OF
 HV5645'EXTREME END OF POINT.  STATION MARK IS A HOLE IN THE CENTER OF THE
 HV5645'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV5645'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV5645'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5645'TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE,
 HV5645'BURIED WITH TOP 2 INCHES BELOW THE BASE OF THE MONUMENT. DISTANCES
 HV5645'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LEFT
 HV5645'PEAK OF BOATHOUSE AT THE ANCHORAGE, 1/4 MILE, S 51 DEG 4 MIN W.
 HV5645'LEFT CORNER OF THE ANCHORAGE, 1/4 MILE, S 62 DEG 19 MIN W.  LEFT
 HV5645'CORNER OF OLD EPISCOPAL CHURCH, 1/4 MILE, S 68 DEG 5 MIN W.  NAIL
 HV5645'IN BLAZE IN 5-INCH LOCUST TREE, 13.65 METERS (44.8 FEET), N 75
 HV5645'DEG 29 MIN W. LEFT CORNER OF GOLDSBOROUGHS HOUSE, 1/8 MILE, N 37
 HV5645'DEG 28 MIN W. NAIL IN BLAZE IN 8-INCH LOCUST TREE, 9.07 METERS
 HV5645'(29.76 FEET), N 35 DEG 47 MIN W.  WINDMILL ON TOWER, 1/8 MILE, N
 HV5645'30 DEG 40 MIN W. NAIL IN BLAZE IN 8-INCH LOCUST TREE, 13.39 METERS
 HV5645'(43.9 FEET), N 6 DEG 46 MIN W.  RIGHT PEAK OF BRICK HOUSE, 3/8
 HV5645'MILE, N 34 DEG 21 MIN E.  NEAR PEAK OF WHARF HOUSE, 1/8 MILE, N 88
 HV5645'DEG 48 MIN E. RIGHT CORNER OF 2 1/2-STORY HOUSE, 1/4 MILE, S 12
 HV5645'DEG 40 MIN E.
 HV5645
 HV5645                          STATION RECOVERY (1940)
 HV5645
 HV5645'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5645'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  IT WAS DUG FOR
 HV5645'UNSUCCESSFULLY.  PROBABLY HAS WASHED AWAY.
 HV5645'
 HV5645'TWO OF THREE REFERENCE TREES RECOVERED INTACT.
 HV5645'
 HV5645'REFERENCE MARK RECOVERED IS DESCRIBED AS AN 8-INCH LOCUST TREE IN
 HV5645'ORIGINAL DESCRIPTION, 9.07 METERS N 35 DEG 47 MIN W. THE TREE IS
 HV5645'NOW 14 INCHES IN DIAMETER AND HAS A NAIL IN CENTER OF A TRIANGULAR
 HV5645'BLAZE.  IT IS ON THE NORTHWESTERN SHORE OF MILES RIVER ABOUT 1/4
 HV5645'MILE NE OF MILES RIVER BRIDGE, OPPOSITE THE POINT BETWEEN GLEBE
 HV5645'CREEK AND GOLDSBORO CREEK, ON A POINT ABOUT 4 FEET ABOVE HIGH
 HV5645'WATER, ABOUT 20 YARDS N OF EXTREME POINT, AND 43 YARDS E OF AN
 HV5645'8-INCH CEDAR.
 HV5645
 HV5645                          STATION RECOVERY (1943)
 HV5645
 HV5645'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (LPR)
 HV5645'NOT FOUND.  RECOVERY NOTE OF L.W.S. (1940) STATES MARK PROBABLY
 HV5645'WASHED AWAY.  THIS RECOVERY NOTE IS ADEQUATE AT PRESENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0136 ***********************************************************************
 JV0136  DESIGNATION -  CHAPEL
 JV0136  PID         -  JV0136
 JV0136  STATE/COUNTY-  MD/HARFORD
 JV0136  COUNTRY     -  US
 JV0136  USGS QUAD   -  ABERDEEN (2016)
 JV0136
 JV0136                         *CURRENT SURVEY CONTROL
 JV0136  ______________________________________________________________________
 JV0136* NAD 83(1991) POSITION- 39 33 30.22887(N) 076 08 51.01181(W)   ADJUSTED
 JV0136* NAVD 88 ORTHO HEIGHT -   126.396 (meters)      414.68  (feet) ADJUSTED
 JV0136  ______________________________________________________________________
 JV0136  GEOID HEIGHT    -        -33.025 (meters)                     GEOID18
 JV0136  LAPLACE CORR    -         -2.98  (seconds)                    DEFLEC18
 JV0136  DYNAMIC HEIGHT  -        126.334 (meters)      414.48  (feet) COMP
 JV0136  MODELED GRAVITY -    980,131.4   (mgal)                       NAVD 88
 JV0136
 JV0136  HORZ ORDER      -  SECOND
 JV0136  VERT ORDER      -  SECOND    CLASS 0
 JV0136
 JV0136.The horizontal coordinates were established by classical geodetic methods
 JV0136.and adjusted by the National Geodetic Survey in January 1992.
 JV0136
 JV0136.The orthometric height was determined by differential leveling and
 JV0136.adjusted by the NATIONAL GEODETIC SURVEY
 JV0136.in June 1991.
 JV0136
 JV0136.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0136.GEOID18 height accuracy estimate available here.
 JV0136
 JV0136.Click photographs - Photos may exist for this station.
 JV0136
 JV0136.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0136
 JV0136.The dynamic height is computed by dividing the NAVD 88
 JV0136.geopotential number by the normal gravity value computed on the
 JV0136.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0136.degrees latitude (g = 980.6199 gals.).
 JV0136
 JV0136.The modeled gravity was interpolated from observed gravity values.
 JV0136
 JV0136. The following values were computed from the NAD 83(1991) position.
 JV0136
 JV0136;                    North         East     Units Scale Factor Converg.
 JV0136;SPC MD       -   210,340.654   473,265.215   MT  1.00002076   +0 32 06.2
 JV0136;SPC MD       -   690,092.63  1,552,704.29   sFT  1.00002076   +0 32 06.2
 JV0136;UTM  18      - 4,379,374.202   401,420.153   MT  0.99971965   -0 43 51.1
 JV0136
 JV0136!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0136!SPC MD       -   0.99998535  x   1.00002076  =   1.00000611
 JV0136!UTM  18      -   0.99998535  x   0.99971965  =   0.99970501
 JV0136
 JV0136:                Primary Azimuth Mark                     Grid Az
 JV0136:SPC MD       -  CHAPEL HILL RESERVOIR TANK               274 25 54.9
 JV0136:UTM  18      -  CHAPEL HILL RESERVOIR TANK               275 41 52.2
 JV0136
 JV0136_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0142079374(NAD 83)
 JV0136
 JV0136|---------------------------------------------------------------------|
 JV0136| PID    Reference Object                     Distance      Geod. Az  |
 JV0136|                                                           dddmmss.s |
 JV0136| JV0137 CHAPEL RM 1                           9.585 METERS 19115     |
 JV0136| JV4801 CHAPEL HILL RESERVOIR TANK          APPROX. 2.1 KM 2745801.1 |
 JV0136| JV0138 CHAPEL RM 2                           9.140 METERS 27624     |
 JV0136|---------------------------------------------------------------------|
 JV0136
 JV0136                          SUPERSEDED SURVEY CONTROL
 JV0136
 JV0136  NAD 83(1986)-  39 33 30.22284(N)    076 08 51.01717(W) AD(       ) 2
 JV0136  NAD 27      -  39 33 29.83170(N)    076 08 52.19400(W) AD(       ) 2
 JV0136  NGVD 29             126.69   (m)          415.6    (f) LEVELING    3  
 JV0136  NGVD 29 (11/26/84)  126.662  (m)          415.56   (f) ADJUSTED    2 0
 JV0136
 JV0136.Superseded values are not recommended for survey control.
 JV0136
 JV0136.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0136.See file dsdata.pdf to determine how the superseded data were derived.
 JV0136
 JV0136_MARKER: DS = TRIANGULATION STATION DISK
 JV0136_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0136_STAMPING: CHAPEL 1958
 JV0136_MARK LOGO: CGS
 JV0136_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0136+STABILITY: SURFACE MOTION
 JV0136
 JV0136  HISTORY     - Date     Condition        Report By
 JV0136  HISTORY     - 1958     MONUMENTED       CGS
 JV0136  HISTORY     - 1959     GOOD             CGS
 JV0136  HISTORY     - 1973     GOOD             NGS
 JV0136  HISTORY     - 1988     GOOD             USPSQD
 JV0136
 JV0136                          STATION DESCRIPTION
 JV0136
 JV0136'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0136'STATION IS LOCATED ON A HIGH HILL WHICH IS ABOUT 3-1/2 MILES
 JV0136'NORTHEAST OF ABERDEEN AND ABOUT 2-1/2 MILES NORTHWEST OF HARVE DE
 JV0136'GRACE.  IT IS 2 FEET SOUTH OF WITNESS MARKER, 145 FEET WEST OF
 JV0136'FENCE CORNER.  THE MARK IS A STANDARD TRIANGULATION STATION MARK
 JV0136'DISK SET IN A 10 BY 10 INCH CONCRETE MONUMENT SET FLUSH AND THE
 JV0136'DISK IS STAMPED CHAPEL 1958.
 JV0136'
 JV0136'REFERENCE MARK NO. 2 IS 175 FEET WEST OF FENCE CORNER.  THE MARK
 JV0136'IS A STANDARD REFERENCE MARK DISK SET IN A 10 BY 10 INCH CONCRETE
 JV0136'MONUMENT SET FLUSH AND THE DISK IS STAMPED CHAPEL NO 2 1958.
 JV0136'
 JV0136'REFERENCE MARK NO. 1 IS 146 FEET SOUTHWEST OF FENCE CORNER, AND 56
 JV0136'FEET NORTHEAST OF A SMALL PERSIMMON TREE.  THE MARK IS A STANDARD
 JV0136'REFERENCE MARK DISK SET IN A 10 BY 10 INCH CONCRETE MONUMENT SET
 JV0136'FLUSH AND THE DISK IS STAMPED CHAPEL NO 1 1958.
 JV0136'
 JV0136'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JV0136'HIGHWAY NO. 7 AND 155 WHICH IS NORTH OF THE BUSINESS DISTRICT OF
 JV0136'HAVRE DE GRACE, GO NORTHWEST ON STATE HIGHWAY NO. 155 FOR 2.75
 JV0136'MILES TO CROSSROAD, TURN LEFT AND GO SOUTH ON EARLTON ROAD FOR 1.0
 JV0136'MILE TO DIM TRACK ROAD ON THE RIGHT, TURN RIGHT AND GO WESTERLY
 JV0136'FOR 0.15 MILE TO TOP OF HILL AND STATION AS DESCRIBED.
 JV0136'
 JV0136'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV0136
 JV0136                          STATION RECOVERY (1959)
 JV0136
 JV0136'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV0136'5.6 MI NE FROM ABERDEEN.
 JV0136'ABOUT 0.6 MILE NORTHWEST ALONG STATE HIGHWAY 22 FROM THE POST
 JV0136'OFFICE AT ABERDEEN, THENCE 3.0 MILES NORTHEAST ALONG STATE
 JV0136'HIGHWAY 462, THENCE 1.4 MILES EAST ALONG CHAPEL ROAD, THENCE
 JV0136'0.4 MILE NORTH ALONG EARLTON ROAD, THENCE 0.2 MILE WEST ALONG
 JV0136'A DIM ROAD TO TOP OF A BARE HILL, 145 FEET WEST OF A FENCE CORNER,
 JV0136'2 FEET SOUTH OF A METAL WITNESS POST AND SET IN THE TOP OF A
 JV0136'CONCRETE POST FLUSH WITH THE GROUND.
 JV0136
 JV0136                          STATION RECOVERY (1973)
 JV0136
 JV0136'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV0136'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV0136'CONDITION.  DUE TO HEAVY RAIN THE MARKS WERE NOT INTERSECTED AT
 JV0136'THIS DATE.  THE 1958 DESCRIPTION OF THE STATION IS ADEQUATE.
 JV0136'
 JV0136'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV0136'3-1/2 MILES NORTHEAST OF ABERDEEN.
 JV0136
 JV0136                          STATION RECOVERY (1988)
 JV0136
 JV0136'RECOVERY NOTE BY US POWER SQUADRON 1988 (CET)
 JV0136'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2098 ***********************************************************************
 HU2098  DESIGNATION -  CHAPEL
 HU2098  PID         -  HU2098
 HU2098  STATE/COUNTY-  MD/CAROLINE
 HU2098  COUNTRY     -  US
 HU2098  USGS QUAD   -  DENTON (2017)
 HU2098
 HU2098                         *CURRENT SURVEY CONTROL
 HU2098  ______________________________________________________________________
 HU2098* NAD 83(1991) POSITION- 38 54 27.93381(N) 075 50 21.01650(W)   ADJUSTED
 HU2098* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 HU2098  ______________________________________________________________________
 HU2098  GEOID HEIGHT    -        -34.769 (meters)                     GEOID18
 HU2098  LAPLACE CORR    -         -3.51  (seconds)                    DEFLEC18
 HU2098  HORZ ORDER      -  THIRD
 HU2098
 HU2098.The horizontal coordinates were established by classical geodetic methods
 HU2098.and adjusted by the National Geodetic Survey in January 1992.
 HU2098
 HU2098.The orthometric height was scaled from a topographic map.
 HU2098
 HU2098.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2098.GEOID18 height accuracy estimate available here.
 HU2098
 HU2098.Click photographs - Photos may exist for this station.
 HU2098
 HU2098.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2098
 HU2098. The following values were computed from the NAD 83(1991) position.
 HU2098
 HU2098;                    North         East     Units Scale Factor Converg.
 HU2098;SPC MD       -   138,406.798   500,681.106   MT  0.99995000   +0 43 42.9
 HU2098;SPC MD       -   454,089.64  1,642,651.26   sFT  0.99995000   +0 43 42.9
 HU2098;UTM  18      - 4,306,875.294   427,239.881   MT  0.99966519   -0 31 37.5
 HU2098
 HU2098!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2098!SPC MD       -   1.00000424  x   0.99995000  =   0.99995424
 HU2098!UTM  18      -   1.00000424  x   0.99966519  =   0.99966943
 HU2098
 HU2098:                Primary Azimuth Mark                     Grid Az
 HU2098:SPC MD       -  CHAPEL AZ MK                             278 17 49.7
 HU2098:UTM  18      -  CHAPEL AZ MK                             279 33 10.1
 HU2098
 HU2098_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2723906875(NAD 83)
 HU2098
 HU2098|---------------------------------------------------------------------|
 HU2098| PID    Reference Object                     Distance      Geod. Az  |
 HU2098|                                                           dddmmss.s |
 HU2098| HU2097 GREENSBORO PET MILK CO STACK        APPROX. 8.2 KM 0143035.7 |
 HU2098| HU2096 GREENSBORO WATER TANK               APPROX. 8.0 KM 0200712.4 |
 HU2098| DC7902 CHAPEL RM 1                                        10209     |
 HU2098| HU2099 DENTON EAST POWERLINE TOWER         APPROX. 1.8 KM 1541948.3 |
 HU2098| HU2100 DENTON MUNICIPAL TANK               APPROX. 2.5 KM 1584827.0 |
 HU2098| HU2101 DENTON WEST POWERLINE TOWER         APPROX. 1.7 KM 1602221.3 |
 HU2098| DC7901 CHAPEL AZ MK                                       2790132.6 |
 HU2098| HU2111 RIDGELY WATER TANK                  APPROX. 6.0 KM 3165356.3 |
 HU2098| DC7903 CHAPEL RM 2                          49.580 METERS 34802     |
 HU2098|---------------------------------------------------------------------|
 HU2098
 HU2098                          SUPERSEDED SURVEY CONTROL
 HU2098
 HU2098  NAD 83(1986)-  38 54 27.92739(N)    075 50 21.03012(W) AD(       ) 3
 HU2098  NAD 27      -  38 54 27.52000(N)    075 50 22.26800(W) AD(       ) 3
 HU2098
 HU2098.Superseded values are not recommended for survey control.
 HU2098
 HU2098.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2098.See file dsdata.pdf to determine how the superseded data were derived.
 HU2098
 HU2098_MARKER: DS = TRIANGULATION STATION DISK
 HU2098_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2098_STAMPING: CHAPEL 1934
 HU2098_MARK LOGO: CGS
 HU2098_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2098+STABILITY: SURFACE MOTION
 HU2098
 HU2098  HISTORY     - Date     Condition        Report By
 HU2098  HISTORY     - 1934     MONUMENTED       CGS
 HU2098  HISTORY     - 1974     GOOD             MDDT
 HU2098  HISTORY     - 20031203 MARK NOT FOUND   USPSQD
 HU2098
 HU2098                          STATION DESCRIPTION
 HU2098
 HU2098'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU2098'THIS SECOND-ORDER STATION IS ON THE W BANK OF THE CHOPTANK RIVER
 HU2098'OPPOSITE THE CHAPEL BRANCH, ABOUT 1-1/2 MILES NW OF DENTON,
 HU2098'MARYLAND, ON PROPERTY OWNED BY HARVEY THAWLEY.  THE STATION IS
 HU2098'AT A T-INTERSECTION OF THE ROAD ALONG THE ROAD ON THE W BANK
 HU2098'OF THE RIVER, AND A ROAD THAT GOES W.  STATION IS ON A KNOLL
 HU2098'THAT IS ABOUT 100 YARDS W OF THE RIVER BANK, 12.80 METERS NE OF
 HU2098'CENTER LINE OF T-INTERSECTION, 8.70 METERS E OF CENTER LINE OF
 HU2098'N-S ROAD ALONG RIVER, 20 METERS ENE OF A 30-INCH WILD CHERRY
 HU2098'TREE IN THE NW ANGLE OF THE ROAD INTERSECTION, 5.10 METERS N OF
 HU2098'PROPERTY LINE, HARVEY THAWLEY ON N, AND GOOTIE ROE ON THE
 HU2098'S, ABOUT 45 METERS W OF THAWLEYS HOUSE THAT IS AT THE FOOT OF THE
 HU2098'KNOLL.  THE UPPER MARK IS SET 12 INCHES BELOW THE SURFACE OF THE
 HU2098'GROUND.
 HU2098'
 HU2098'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HU2098'BRONZE DISKS SET IN CONCRETE.
 HU2098'
 HU2098'REFERENCE MARK NO.1 IS E OF THE STATION, ON THE E SLOPE OF THE
 HU2098'KNOLL, THE MARK IS FLUSH WITH THE GROUND.  IT IS ON THE PROPERTY
 HU2098'LINE, BETWEEN THAWLEYS AND ROES PROPERTY, 26.80 METERS E OF THE
 HU2098'CENTER LINE OF THE N-S ROAD, 33.80 METERS SSW OF THE SW CORNER OF
 HU2098'THAWLEYS HOUSE.
 HU2098'
 HU2098'REFERENCE MARK NO.2 IS N OF THE STATION, PROJECTS 3 INCHES
 HU2098'ABOVE GROUND, IN THE NW CORNER OF THE LOT ON WHICH THE STATION IS
 HU2098'LOCATED, ON THE N EDGE OF THE LOT, AND THE S EDGE OF WOODS, AT
 HU2098'THE SW EDGE OF THE WOODS, 5.70 METERS E OF THE CENTER LINE OF THE
 HU2098'N-S ROAD.
 HU2098'
 HU2098'THE AZIMUTH MARK IS WNW OF THE STATION, IN A N-S FENCE LINE
 HU2098'BETWEEN TWO CULTIVATED FIELDS, 5 PACES S OF A 3-INCH CEDAR TREE
 HU2098'IN THE FENCE LINE, 162 PACES N OF CENTER LINE OF THE E-W ROAD.
 HU2098'
 HU2098'TO REACH FROM DENTON, MARYLAND, GO W FROM THE COURTHOUSE ON
 HU2098'MARKET STREET (STATE HIGHWAY 404) 0.4 MILE TO THE W END OF THE
 HU2098'BRIDGE OVER THE CHOPTANK RIVER, HERE TURN RIGHT ON DIRT ROAD
 HU2098'ALONG THE W BANK OF THE RIVER, FOLLOW THIS ROAD FOR 1.4 MILES TO
 HU2098'THE T-INTERSECTION W AND THE STATION.
 HU2098'
 HU2098'A 90-FOOT TOWER NECESSARY.
 HU2098
 HU2098                          STATION RECOVERY (1974)
 HU2098
 HU2098'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1974
 HU2098'STATION MARK, REFERENCE MARKS, AND AZIMUTH MARK WERE ALL RECOVERED
 HU2098'IN GOOD CONDITION.  A SCHOOL HOUSE NOW OBSTRUCTS THE SIGHT-DISTANCE
 HU2098'TO THE AZIMUTH MARK.  THE EAST AND WEST POWER LINE TOWERS OBSERVED
 HU2098'IN 1934 ARE VG FOR AZIMUTH REFERENCE.
 HU2098
 HU2098                          STATION RECOVERY (2003)
 HU2098
 HU2098'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HU2098'ALL REFERENCED ROADS IN THE VICINITY OF THE STATION HAVE BEEN
 HU2098'EXTENSIVELY WIDENED AND PAVED.  THE REFERENCED N-S ROAD IS ROUTE 328,
 HU2098'RIVER ROAD.  THE REFERENCED PRIVATE PROPERTIES HAVE BEEN GRADED AND
 HU2098'THERE ARE NEW HOMES OF RECENT CONSTRUCTION.
 HU2098'
 HU2098'STATION CHAPEL MAY BE UNDER A GRAVEL DRIVEWAY.  RM2 PLOTS UNDER THE
 HU2098'NEWLY PAVED ROAD SHOULDER.  RM1 MAY BE UNDER A ROCK GARDEN BETWEEN THE
 HU2098'TWO REFERENCED PROPERTIES.  THE AREA IN THE VICINITY OF THE AZIMUTH
 HU2098'MARK HAS BEEN EXTENSIVELY GRADED AND IS NOW USED BY NORTH CAROLINE
 HU2098'SENIOR HIGH AS ATHLETIC FIELDS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6817 ***********************************************************************
 HV6817  DESIGNATION -  CHAPEL
 HV6817  PID         -  HV6817
 HV6817  STATE/COUNTY-  MD/ST MARYS
 HV6817  COUNTRY     -  US
 HV6817  USGS QUAD   -  LEONARDTOWN (2016)
 HV6817
 HV6817                         *CURRENT SURVEY CONTROL
 HV6817  ______________________________________________________________________
 HV6817* NAD 83(1993) POSITION- 38 15 29.98768(N) 076 42 25.48646(W)   ADJUSTED
 HV6817* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV6817  ______________________________________________________________________
 HV6817  GEOID HEIGHT    -        -33.781 (meters)                     GEOID18
 HV6817  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 HV6817  HORZ ORDER      -  THIRD
 HV6817
 HV6817.The horizontal coordinates were established by classical geodetic methods
 HV6817.and adjusted by the National Geodetic Survey in November 1994.
 HV6817
 HV6817.The orthometric height was scaled from a topographic map.
 HV6817
 HV6817.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6817.GEOID18 height accuracy estimate available here.
 HV6817
 HV6817.Click photographs - Photos may exist for this station.
 HV6817
 HV6817.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6817
 HV6817. The following values were computed from the NAD 83(1993) position.
 HV6817
 HV6817;                    North         East     Units Scale Factor Converg.
 HV6817;SPC MD       -    65,718.516   425,637.557   MT  1.00000751   +0 11 01.8
 HV6817;SPC MD       -   215,611.50  1,396,445.88   sFT  1.00000751   +0 11 01.8
 HV6817;SPC VA N     - 2,067,205.537 3,656,907.586   MT  0.99996792   +1 07 08.4
 HV6817;SPC VA N     - 6,782,156.83 11,997,704.31   sFT  0.99996792   +1 07 08.4
 HV6817;UTM  18      - 4,235,855.830   350,645.050   MT  0.99987473   -1 03 26.0
 HV6817
 HV6817!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6817!SPC MD       -   1.00000456  x   1.00000751  =   1.00001207
 HV6817!SPC VA N     -   1.00000456  x   0.99996792  =   0.99997247
 HV6817!UTM  18      -   1.00000456  x   0.99987473  =   0.99987928
 HV6817
 HV6817:                Primary Azimuth Mark                     Grid Az
 HV6817:SPC MD       -  SHIPPING MSFC 1908                       325 28 44.9
 HV6817:SPC VA N     -  SHIPPING MSFC 1908                       324 32 38.3
 HV6817:UTM  18      -  SHIPPING MSFC 1908                       326 43 12.7
 HV6817
 HV6817_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5064535855(NAD 83)
 HV6817
 HV6817|---------------------------------------------------------------------|
 HV6817| PID    Reference Object                     Distance      Geod. Az  |
 HV6817|                                                           dddmmss.s |
 HV6817| CX2203 CHAPEL RM                            17.120 METERS 06549     |
 HV6817| HV6804 SHIPPING MSFC 1908                  APPROX. 1.0 KM 3253946.7 |
 HV6817|---------------------------------------------------------------------|
 HV6817
 HV6817                          SUPERSEDED SURVEY CONTROL
 HV6817
 HV6817  NAD 83(1991)-  38 15 29.98640(N)    076 42 25.49146(W) AD(       ) 3
 HV6817  NAD 83(1986)-  38 15 29.98736(N)    076 42 25.50291(W) AD(       ) 3
 HV6817  NAD 27      -  38 15 29.53500(N)    076 42 26.59500(W) AD(       ) 3
 HV6817  USSD        -  38 15 30.12100(N)    076 42 26.55400(W) AD(       ) 3
 HV6817
 HV6817.Superseded values are not recommended for survey control.
 HV6817
 HV6817.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6817.See file dsdata.pdf to determine how the superseded data were derived.
 HV6817
 HV6817_MARKER: N = NAIL
 HV6817_SETTING: 0 = UNSPECIFIED SETTING
 HV6817
 HV6817  HISTORY     - Date     Condition        Report By
 HV6817  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6817  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6817
 HV6817                          STATION DESCRIPTION
 HV6817
 HV6817'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6817'STATION IS ON THE EASTERN SHORE OF ST. CLEMENT BAY, ON POINT ABOUT
 HV6817'5/8 MILE SE OF SHIPPING POINT, AND 1-1/2 MILES NE OF LONG POINT.
 HV6817'STATION IS ON SW SLOPE OF A POINT ABOUT 15 FEET HIGH, 10 FEET
 HV6817'ABOVE HIGH WATER, 5 YARDS NE OF EDGE OF BANK, 7 YARDS SE OF EDGE
 HV6817'OF BANK, 7 YARDS ESE OF POINT OF BANK, 25 YARDS WSW OF A
 HV6817'CULTIVATED FIELD, AND 3 TO 10 YARDS W TO SW OF A DENSE GROWTH OF
 HV6817'YOUNG PINE TREES.
 HV6817'
 HV6817'STATION MARK IS NAIL IN STUB WITH TOP FLUSH WITH SURFACE OF GROUND.
 HV6817'
 HV6817'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6817'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6817'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6817'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6817'ABOUT 9 YARDS FROM EDGE OF BANK, ON EDGE OF WOODS, AND IS 17.12
 HV6817'METERS (56.2 FEET) FROM STATION N 65 DEG 49 MIN E DISTANCES AND
 HV6817'BEARINGS FROM THE STATION TO OTHER POINTS ARE AS FOLLOWS--NEAR
 HV6817'PEAK OF ROOF OF BARN, 1 MILE, S 11 DEG 8 MIN W. CHIMNEY OF YATES
 HV6817'HOUSE, 1-3/8 MILES, S 26 DEG 32 MIN W.  CHIMNEY OUTSIDE OF HOUSE,
 HV6817'3/4 MILE, S 88 DEG 31 MIN W.  NEAR PEAK OF GABLE OF HOUSE, 3/4
 HV6817'MILE, N 49 DEG 3 MIN W.  CHIMNEY ON RIGHT END OF HOUSE, 1-1/4
 HV6817'MILES, N 33 DEG 26 MIN W.  PEAK OF FRONT GABLE OF HOUSE, 2 MILES,
 HV6817'N 17 DEG 31 MIN W.  NEAR PEAK OF ROOF OF SMALL HOUSE, 3/4 MILE, N
 HV6817'20 DEG 29 MIN E.  PEAK OF GABLE OF HOUSE, 5/8 MILE, N 32 DEG 2
 HV6817'MIN E.  NAIL IN BLAZE IN 6-INCH PINE TREE, 5.68 METERS (18.64
 HV6817'FEET), N 46 DEG 58 MIN E.  NAIL IN BLAZE IN 4-INCH PINE TREE, 3.10
 HV6817'METERS (10.17 FEET), N 84 DEG 47 MIN E. NAIL IN BLAZE IN 3-INCH
 HV6817'PINE TREE, 9.38 METERS (30.77 FEET), S 55 DEG 16 MIN E.
 HV6817
 HV6817                          STATION RECOVERY (1958)
 HV6817
 HV6817'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6817'THIS STATION WAS NOT RECOVERED AFTER A 1 HOUR SEARCH BY TWO MEN.
 HV6817'NONE OF THE VARIOUS REFERENCES NOW EXIST.  THE STATION IS
 HV6817'BELIEVED TO HAVE BEEN DESTROYED BY THE RAPID EROSION OF THE POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6312 ***********************************************************************
 DG6312  DESIGNATION -  CHAPEL
 DG6312  PID         -  DG6312
 DG6312  STATE/COUNTY-  MD/TALBOT
 DG6312  COUNTRY     -  US
 DG6312  USGS QUAD   -  EASTON (2016)
 DG6312
 DG6312                         *CURRENT SURVEY CONTROL
 DG6312  ______________________________________________________________________
 DG6312* NAD 83(2011) POSITION- 38 47 10.79874(N) 076 03 36.66204(W)   ADJUSTED
 DG6312* NAD 83(2011) ELLIP HT-   -18.016 (meters)        (06/27/12)   ADJUSTED
 DG6312* NAD 83(2011) EPOCH   -  2010.00
 DG6312* NAVD 88 ORTHO HEIGHT -    16.660 (meters)       54.66  (feet) ADJUSTED
 DG6312  ______________________________________________________________________
 DG6312  GEOID HEIGHT    -        -34.669 (meters)                     GEOID18
 DG6312  NAD 83(2011) X  -  1,199,262.629 (meters)                     COMP
 DG6312  NAD 83(2011) Y  - -4,831,594.690 (meters)                     COMP
 DG6312  NAD 83(2011) Z  -  3,973,844.113 (meters)                     COMP
 DG6312  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 DG6312  DYNAMIC HEIGHT  -         16.650 (meters)       54.63  (feet) COMP
 DG6312  MODELED GRAVITY -    980,037.2   (mgal)                       NAVD 88
 DG6312
 DG6312  VERT ORDER      -  SECOND    CLASS I
 DG6312
 DG6312  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DG6312  Standards:
 DG6312         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DG6312            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DG6312  -------------------------------------------------------------------
 DG6312  NETWORK    1.26   2.10           0.50   0.53   1.07     -0.07287686
 DG6312  -------------------------------------------------------------------
 DG6312  Click here for local accuracies and other accuracy information.
 DG6312
 DG6312.The horizontal coordinates were established by GPS observations
 DG6312.and adjusted by the National Geodetic Survey in June 2012.
 DG6312
 DG6312.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DG6312.been affixed to the stable North American tectonic plate. See 
 DG6312.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DG6312
 DG6312.The horizontal coordinates are valid at the epoch date displayed above
 DG6312.which is a decimal equivalence of Year/Month/Day.
 DG6312
 DG6312.The orthometric height was determined by differential leveling and
 DG6312.adjusted by the NATIONAL GEODETIC SURVEY
 DG6312.in September 2004.
 DG6312
 DG6312.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6312.GEOID18 height accuracy estimate available here.
 DG6312
 DG6312.Click photographs - Photos may exist for this station.
 DG6312
 DG6312.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DG6312
 DG6312.The Laplace correction was computed from DEFLEC18 derived deflections.
 DG6312
 DG6312.The ellipsoidal height was determined by GPS observations
 DG6312.and is referenced to NAD 83.
 DG6312
 DG6312.The dynamic height is computed by dividing the NAVD 88
 DG6312.geopotential number by the normal gravity value computed on the
 DG6312.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6312.degrees latitude (g = 980.6199 gals.).
 DG6312
 DG6312.The modeled gravity was interpolated from observed gravity values.
 DG6312
 DG6312. The following values were computed from the NAD 83(2011) position.
 DG6312
 DG6312;                    North         East     Units Scale Factor Converg.
 DG6312;SPC MD       -   124,707.778   481,651.739   MT  0.99995106   +0 35 23.5
 DG6312;SPC MD       -   409,145.43  1,580,219.08   sFT  0.99995106   +0 35 23.5
 DG6312;UTM  18      - 4,293,599.844   407,920.208   MT  0.99970441   -0 39 51.0
 DG6312
 DG6312!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DG6312!SPC MD       -   1.00000283  x   0.99995106  =   0.99995389
 DG6312!UTM  18      -   1.00000283  x   0.99970441  =   0.99970724
 DG6312
 DG6312_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0792093599(NAD 83)
 DG6312
 DG6312                          SUPERSEDED SURVEY CONTROL
 DG6312
 DG6312  NAD 83(2007)-  38 47 10.79896(N)    076 03 36.66275(W) AD(2002.00) 1
 DG6312  ELLIP H (04/02/09)  -17.983  (m)                       GP(2002.00) 4 1
 DG6312  NAD 83(1991)-  38 47 10.79891(N)    076 03 36.66251(W) AD(       ) 1
 DG6312  ELLIP H (10/15/07)  -17.983  (m)                       GP(       ) 4 1
 DG6312  NAVD 88              16.66   (m)           54.7    (f) LEVELING    3  
 DG6312
 DG6312.Superseded values are not recommended for survey control.
 DG6312
 DG6312.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DG6312.See file dsdata.pdf to determine how the superseded data were derived.
 DG6312
 DG6312_MARKER: DD = SURVEY DISK
 DG6312_SETTING: 30 = SET IN A LIGHT STRUCTURE
 DG6312_SP_SET: DROP INLET
 DG6312_STAMPING: CHAPEL 1990
 DG6312_MARK LOGO: MDSHA
 DG6312_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6312_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DG6312_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6312+SATELLITE: SATELLITE OBSERVATIONS - June 24, 2002
 DG6312
 DG6312  HISTORY     - Date     Condition        Report By
 DG6312  HISTORY     - 1991     MONUMENTED       MDSHA
 DG6312  HISTORY     - 19991007 GOOD             MDSHA
 DG6312  HISTORY     - 20020624 GOOD             MDSHA
 DG6312  HISTORY     - 20051109 POOR             USPSQD
 DG6312
 DG6312                          STATION DESCRIPTION
 DG6312
 DG6312'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6312'THE MARK IS LOCATED ABOUT 5.0 MI (8.05 KM) SOUTH-SOUTHEAST OF
 DG6312'LONGWOODS, 4.7 MI (7.56 KM) EAST-SOUTHEAST OF UNIONVILLE AND 1.2 MI
 DG6312'(1.93 KM) NORTHEAST OF EASTON.  OWNERSHIP--ROAD RIGHT-OF-WAY.  TO
 DG6312'REACH FROM THE INTERSECTION OF MARYLAND STATE HIGHWAY 331 (DOVER ROAD)
 DG6312'AND U.S.HIGHWAY 50 IN EASTON, PROCEED NORTH ALONG U.S.HIGHWAY 50 FOR
 DG6312'0.9 MILES (1.4 KM) TO THE MARK LOCATED IN THE GRASS MEDIAN IN A
 DG6312'CONCRETE DRAINAGE INLET.  IT IS 129.3 FT (39.4 M) SOUTHEAST OF POWER
 DG6312'POLE NUMBER EU BE-50/5, 107.0 FT (32.6 M) SOUTHWEST OF A POWER POLE
 DG6312'WITH NO NUMBER, 30.5 FT (9.3 M) SOUTH OF THE PROJECTED CENTERLINE OF
 DG6312'MULBERRY DRIVE, 29.0 FT (8.8 M) EAST OF THE EASTBOUND LANES, 25.2 FT
 DG6312'(7.7 M) WEST OF THE WESTBOUND LANES, SET IN A DRILL HOLE IN THE
 DG6312'SOUTHWEST CORNER OF A DRAINAGE INLET AND ABOUT 2.5 FT (0.8 M) LOWER
 DG6312'THAN THE EASTBOUND LANES OF THE HIGHWAY.
 DG6312
 DG6312                          STATION RECOVERY (2002)
 DG6312
 DG6312'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 DG6312'RECOVERED AS DESCRIBED.
 DG6312
 DG6312                          STATION RECOVERY (2005)
 DG6312
 DG6312'RECOVERY NOTE BY US POWER SQUADRON 2005 (AEM)
 DG6312'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4801 ***********************************************************************
 JV4801  DESIGNATION -  CHAPEL HILL RESERVOIR TANK
 JV4801  PID         -  JV4801
 JV4801  STATE/COUNTY-  MD/HARFORD
 JV4801  COUNTRY     -  US
 JV4801  USGS QUAD   -  ABERDEEN (2016)
 JV4801
 JV4801                         *CURRENT SURVEY CONTROL
 JV4801  ______________________________________________________________________
 JV4801* NAD 83(1991) POSITION- 39 33 36.13942(N) 076 10 19.01538(W)   ADJUSTED
 JV4801  ______________________________________________________________________
 JV4801  GEOID HEIGHT    -        -32.989 (meters)                     GEOID18
 JV4801  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC18
 JV4801  HORZ ORDER      -  THIRD
 JV4801
 JV4801.The horizontal coordinates were established by classical geodetic methods
 JV4801.and adjusted by the National Geodetic Survey in January 1992.
 JV4801
 JV4801.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4801.GEOID18 height accuracy estimate available here.
 JV4801
 JV4801.Click photographs - Photos may exist for this station.
 JV4801
 JV4801.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4801
 JV4801. The following values were computed from the NAD 83(1991) position.
 JV4801
 JV4801;                    North         East     Units Scale Factor Converg.
 JV4801;SPC MD       -   210,503.598   471,162.732   MT  1.00002110   +0 31 11.0
 JV4801;SPC MD       -   690,627.22  1,545,806.40   sFT  1.00002110   +0 31 11.0
 JV4801;UTM  18      - 4,379,583.497   399,322.411   MT  0.99972479   -0 44 47.3
 JV4801
 JV4801_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9932279583(NAD 83)
 JV4801
 JV4801                          SUPERSEDED SURVEY CONTROL
 JV4801
 JV4801  NAD 83(1986)-  39 33 36.13357(N)    076 10 19.01977(W) AD(       ) 3
 JV4801  NAD 27      -  39 33 35.74300(N)    076 10 20.19000(W) AD(       ) 3
 JV4801
 JV4801.Superseded values are not recommended for survey control.
 JV4801
 JV4801.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4801.See file dsdata.pdf to determine how the superseded data were derived.
 JV4801
 JV4801_MARKER: 51 = TANK
 JV4801
 JV4801  HISTORY     - Date     Condition        Report By
 JV4801  HISTORY     - 1958     FIRST OBSERVED   CGS
 JV4801  HISTORY     - 1963     GOOD             CGS
 JV4801
 JV4801                          STATION DESCRIPTION
 JV4801
 JV4801'DESCRIBED BY COAST AND GEODETIC SURVEY 1963 (MJT)
 JV4801'NO ORIGINAL DESCRIPTION.  THE POSITION OF THIS INTERSECTION
 JV4801'STATION WAS PLOTTED ON A TOPOGRAPHIC MAP.  A RED AND WHITE
 JV4801'CHECKERED WATER TANK IS AT THIS LOCATION.  THIS AREA KNOWN AS
 JV4801'THE CHAPEL HILL RESERVOIR IS RESTRICTED.  ACCESS WAS DENIED THE
 JV4801'FIELD PARTY BUT THE ATTENDANT STATED THE TANK WAS THERE IN 1959.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0137 ***********************************************************************
 JV0137  DESIGNATION -  CHAPEL RM 1
 JV0137  PID         -  JV0137
 JV0137  STATE/COUNTY-  MD/HARFORD
 JV0137  COUNTRY     -  US
 JV0137  USGS QUAD   -  ABERDEEN (2016)
 JV0137
 JV0137                         *CURRENT SURVEY CONTROL
 JV0137  ______________________________________________________________________
 JV0137* NAD 83(1986) POSITION- 39 33 29.92   (N) 076 08 51.09   (W)   HD_HELD1
 JV0137* NAVD 88 ORTHO HEIGHT -   125.679 (meters)      412.33  (feet) ADJUSTED
 JV0137  ______________________________________________________________________
 JV0137  GEOID HEIGHT    -        -33.025 (meters)                     GEOID18
 JV0137  DYNAMIC HEIGHT  -        125.617 (meters)      412.13  (feet) COMP
 JV0137  MODELED GRAVITY -    980,131.4   (mgal)                       NAVD 88
 JV0137
 JV0137  VERT ORDER      -  SECOND    CLASS 0
 JV0137
 JV0137.The horizontal coordinates were determined by differentially corrected
 JV0137.hand held GPS observations or other comparable positioning techniques
 JV0137.and have an estimated accuracy of +/- 3 meters.
 JV0137
 JV0137.The orthometric height was determined by differential leveling and
 JV0137.adjusted by the NATIONAL GEODETIC SURVEY
 JV0137.in June 1991.
 JV0137
 JV0137.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0137.GEOID18 height accuracy estimate available here.
 JV0137
 JV0137.Click photographs - Photos may exist for this station.
 JV0137
 JV0137.The dynamic height is computed by dividing the NAVD 88
 JV0137.geopotential number by the normal gravity value computed on the
 JV0137.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0137.degrees latitude (g = 980.6199 gals.).
 JV0137
 JV0137.The modeled gravity was interpolated from observed gravity values.
 JV0137
 JV0137;                    North         East    Units  Estimated Accuracy
 JV0137;SPC MD       -   210,331.1     473,263.4     MT  (+/- 3 meters HH1 GPS) 
 JV0137
 JV0137_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0141879364(NAD 83)
 JV0137
 JV0137                          SUPERSEDED SURVEY CONTROL
 JV0137
 JV0137  NGVD 29 (11/26/84)  125.945  (m)          413.20   (f) ADJUSTED    2 0
 JV0137
 JV0137.Superseded values are not recommended for survey control.
 JV0137
 JV0137.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0137.See file dsdata.pdf to determine how the superseded data were derived.
 JV0137
 JV0137_MARKER: DR = REFERENCE MARK DISK
 JV0137_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0137_STAMPING: CHAPEL NO 1 1958
 JV0137_MARK LOGO: CGS
 JV0137_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0137+STABILITY: SURFACE MOTION
 JV0137
 JV0137  HISTORY     - Date     Condition        Report By
 JV0137  HISTORY     - 1958     MONUMENTED       CGS
 JV0137  HISTORY     - 1959     GOOD             CGS
 JV0137
 JV0137                          STATION DESCRIPTION
 JV0137
 JV0137'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0137'5.6 MI NE FROM ABERDEEN.
 JV0137'ABOUT 0.6 MILE NORTHWEST ALONG STATE HIGHWAY 22 FROM THE POST
 JV0137'OFFICE AT ABERDEEN, THENCE 3.0 MILES NORTHWEST ALONG STATE
 JV0137'HIGHWAY 462, THENCE 1.4 MILES EAST ALONG CHAPEL ROAD, THENCE
 JV0137'0.4 MILE NORTH ALONG EARLTON ROAD, THENCE 0.2 MILE WEST ALONG A
 JV0137'DIM ROAD, ON THE TOP OF A HIGH BARE HILL, 146 FEET SOUTHWEST OF
 JV0137'A FENCE CORNER, 31.5 FEET SOUTHWEST OF THE STATION, 55 FEET
 JV0137'NORTHEAST OF A SMALL PERSIMMON TREE, SET IN THE TOP OF A
 JV0137'CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0138 ***********************************************************************
 JV0138  DESIGNATION -  CHAPEL RM 2
 JV0138  PID         -  JV0138
 JV0138  STATE/COUNTY-  MD/HARFORD
 JV0138  COUNTRY     -  US
 JV0138  USGS QUAD   -  ABERDEEN (2016)
 JV0138
 JV0138                         *CURRENT SURVEY CONTROL
 JV0138  ______________________________________________________________________
 JV0138* NAD 83(1986) POSITION- 39 33 30.26   (N) 076 08 51.39   (W)   HD_HELD1
 JV0138* NAVD 88 ORTHO HEIGHT -   125.951 (meters)      413.22  (feet) ADJUSTED
 JV0138  ______________________________________________________________________
 JV0138  GEOID HEIGHT    -        -33.024 (meters)                     GEOID18
 JV0138  DYNAMIC HEIGHT  -        125.889 (meters)      413.02  (feet) COMP
 JV0138  MODELED GRAVITY -    980,131.4   (mgal)                       NAVD 88
 JV0138
 JV0138  VERT ORDER      -  SECOND    CLASS 0
 JV0138
 JV0138.The horizontal coordinates were determined by differentially corrected
 JV0138.hand held GPS observations or other comparable positioning techniques
 JV0138.and have an estimated accuracy of +/- 3 meters.
 JV0138
 JV0138.The orthometric height was determined by differential leveling and
 JV0138.adjusted by the NATIONAL GEODETIC SURVEY
 JV0138.in June 1991.
 JV0138
 JV0138.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0138.GEOID18 height accuracy estimate available here.
 JV0138
 JV0138.Click photographs - Photos may exist for this station.
 JV0138
 JV0138.The dynamic height is computed by dividing the NAVD 88
 JV0138.geopotential number by the normal gravity value computed on the
 JV0138.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0138.degrees latitude (g = 980.6199 gals.).
 JV0138
 JV0138.The modeled gravity was interpolated from observed gravity values.
 JV0138
 JV0138;                    North         East    Units  Estimated Accuracy
 JV0138;SPC MD       -   210,341.5     473,256.2     MT  (+/- 3 meters HH1 GPS) 
 JV0138
 JV0138_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0141179375(NAD 83)
 JV0138
 JV0138                          SUPERSEDED SURVEY CONTROL
 JV0138
 JV0138  NGVD 29 (11/26/84)  126.217  (m)          414.10   (f) ADJUSTED    2 0
 JV0138
 JV0138.Superseded values are not recommended for survey control.
 JV0138
 JV0138.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0138.See file dsdata.pdf to determine how the superseded data were derived.
 JV0138
 JV0138_MARKER: DR = REFERENCE MARK DISK
 JV0138_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0138_STAMPING: CHAPEL NO 2 1958
 JV0138_MARK LOGO: CGS
 JV0138_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0138+STABILITY: SURFACE MOTION
 JV0138
 JV0138  HISTORY     - Date     Condition        Report By
 JV0138  HISTORY     - 1958     MONUMENTED       CGS
 JV0138  HISTORY     - 1959     GOOD             CGS
 JV0138
 JV0138                          STATION DESCRIPTION
 JV0138
 JV0138'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0138'5.6 MI NE FROM ABERDEEN.
 JV0138'ABOUT 0.6 MILE NORTHWEST ALONG STATE HIGHWAY 22 FROM THE POST
 JV0138'OFFICE AT ABERDEEN, THENCE 3.0 MILES NORTHEAST ALONG STATE HIGHWAY
 JV0138'462, THENCE 1.4 MILES EAST ALONG CHAPEL ROAD, THENCE 0.4 MILE
 JV0138'NORTH ALONG EARLTON ROAD, THENCE 0.2 MILE WEST ALONG A DIM ROAD
 JV0138'TO THE TOP OF A BARE HILL, 30 FEET WEST OF THE STATION, SET
 JV0138'IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5748 ***********************************************************************
 JV5748  DESIGNATION -  CHAPMAN
 JV5748  PID         -  JV5748
 JV5748  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5748  COUNTRY     -  US
 JV5748  USGS QUAD   -  ROUND BAY (2016)
 JV5748
 JV5748                         *CURRENT SURVEY CONTROL
 JV5748  ______________________________________________________________________
 JV5748* NAD 83(1991) POSITION- 39 03 34.30998(N) 076 32 46.02258(W)   ADJUSTED
 JV5748* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV5748  ______________________________________________________________________
 JV5748  GEOID HEIGHT    -        -33.110 (meters)                     GEOID18
 JV5748  LAPLACE CORR    -         -4.32  (seconds)                    DEFLEC18
 JV5748  HORZ ORDER      -  THIRD
 JV5748
 JV5748.The horizontal coordinates were established by classical geodetic methods
 JV5748.and adjusted by the National Geodetic Survey in January 1992.
 JV5748
 JV5748.The orthometric height was scaled from a topographic map.
 JV5748
 JV5748.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5748.GEOID18 height accuracy estimate available here.
 JV5748
 JV5748.Click photographs - Photos may exist for this station.
 JV5748
 JV5748.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5748
 JV5748. The following values were computed from the NAD 83(1991) position.
 JV5748
 JV5748;                    North         East     Units Scale Factor Converg.
 JV5748;SPC MD       -   154,712.405   439,283.320   MT  0.99995497   +0 17 05.5
 JV5748;SPC MD       -   507,585.62  1,441,215.36   sFT  0.99995497   +0 17 05.5
 JV5748;UTM  18      - 4,324,520.263   366,227.863   MT  0.99982035   -0 58 27.8
 JV5748
 JV5748!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5748!SPC MD       -   1.00000398  x   0.99995497  =   0.99995895
 JV5748!UTM  18      -   1.00000398  x   0.99982035  =   0.99982433
 JV5748
 JV5748:                Primary Azimuth Mark                     Grid Az
 JV5748:SPC MD       -  NETT                                     146 30 38.0
 JV5748:UTM  18      -  NETT                                     147 46 11.3
 JV5748
 JV5748_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6622724520(NAD 83)
 JV5748
 JV5748|---------------------------------------------------------------------|
 JV5748| PID    Reference Object                     Distance      Geod. Az  |
 JV5748|                                                           dddmmss.s |
 JV5748| JV5763 HIGH RM                               7.708 METERS 09847     |
 JV5748| JV5769 NETT                                APPROX. 1.4 KM 1464743.5 |
 JV5748|---------------------------------------------------------------------|
 JV5748
 JV5748                          SUPERSEDED SURVEY CONTROL
 JV5748
 JV5748  NAD 83(1986)-  39 03 34.30667(N)    076 32 46.03286(W) AD(       ) 3
 JV5748  NAD 27      -  39 03 33.91100(N)    076 32 47.16300(W) AD(       ) 3
 JV5748
 JV5748.Superseded values are not recommended for survey control.
 JV5748
 JV5748.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5748.See file dsdata.pdf to determine how the superseded data were derived.
 JV5748
 JV5748_MARKER: DS = TRIANGULATION STATION DISK
 JV5748_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5748_STAMPING: CHAPMAN 1934
 JV5748_MARK LOGO: CGS
 JV5748_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5748+STABILITY: SURFACE MOTION
 JV5748
 JV5748  HISTORY     - Date     Condition        Report By
 JV5748  HISTORY     - 1934     MONUMENTED       CGS
 JV5748  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5748
 JV5748                          STATION DESCRIPTION
 JV5748
 JV5748'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5748'ON THE EASTERN SHORE OF THE SEVERN RIVER, 1/2 MILE S OF SEVERNA
 JV5748'PARK, ON EAGLENEST POINT, ON TOP OF 30-FOOT CLIFF, 8 FEET FROM
 JV5748'EDGE OF CLIFF, ABOUT 10 YARDS SW OF A RED-ROOFED HOUSE BELONGING
 JV5748'TO A MR. CHAPMAN, 6 FEET N AND 6 FEET W OF TWO 6-INCH TREES.
 JV5748'
 JV5748'STATION MARK IS A STANDARD BRONZE DISK SET IN CONCRETE.
 JV5748'
 JV5748'REFERENCE MARK IS AN OLD MARYLAND SHELL FISH SURVEY REFERENCE
 JV5748'MARK - STATION HIGH, 1903.
 JV5748'
 JV5748'HEIGHT OF LIGHT ABOVE STATION MARK 3 METERS.
 JV5748
 JV5748                          STATION RECOVERY (1961)
 JV5748
 JV5748'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5748'STATION AND REFERENCE MARKS WERE SEARCHED FOR BUT COULD NOT BE
 JV5748'FOUND.  MUCH OF THE CLIFF HAS BEEN WASHED AWAY AND RESIDENTS IN
 JV5748'THE AREA STATED THAT THE HILL TOP HAD BEEN CHANGED BY CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6442 ***********************************************************************
 HV6442  DESIGNATION -  CHAR
 HV6442  PID         -  HV6442
 HV6442  STATE/COUNTY-  MD/DORCHESTER
 HV6442  COUNTRY     -  US
 HV6442  USGS QUAD   -  HONGA (2016)
 HV6442
 HV6442                         *CURRENT SURVEY CONTROL
 HV6442  ______________________________________________________________________
 HV6442* NAD 83(1991) POSITION- 38 20 49.90664(N) 076 14 15.89741(W)   ADJUSTED
 HV6442* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6442  ______________________________________________________________________
 HV6442  GEOID HEIGHT    -        -35.038 (meters)                     GEOID18
 HV6442  LAPLACE CORR    -         -6.44  (seconds)                    DEFLEC18
 HV6442  HORZ ORDER      -  SECOND
 HV6442
 HV6442.The horizontal coordinates were established by classical geodetic methods
 HV6442.and adjusted by the National Geodetic Survey in January 1992.
 HV6442
 HV6442.The orthometric height was scaled from a topographic map.
 HV6442
 HV6442.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6442.GEOID18 height accuracy estimate available here.
 HV6442
 HV6442.Click photographs - Photos may exist for this station.
 HV6442
 HV6442.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6442
 HV6442. The following values were computed from the NAD 83(1991) position.
 HV6442
 HV6442;                    North         East     Units Scale Factor Converg.
 HV6442;SPC MD       -    75,819.933   466,632.179   MT  0.99999212   +0 28 42.3
 HV6442;SPC MD       -   248,752.56  1,530,942.41   sFT  0.99999212   +0 28 42.3
 HV6442;UTM  18      - 4,245,063.196   391,841.307   MT  0.99974407   -0 46 04.8
 HV6442
 HV6442!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6442!SPC MD       -   1.00000538  x   0.99999212  =   0.99999750
 HV6442!UTM  18      -   1.00000538  x   0.99974407  =   0.99974945
 HV6442
 HV6442:                Primary Azimuth Mark                     Grid Az
 HV6442:SPC MD       -  CAT                                      171 31 00.0
 HV6442:UTM  18      -  CAT                                      172 45 47.1
 HV6442
 HV6442_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9184145063(NAD 83)
 HV6442
 HV6442|---------------------------------------------------------------------|
 HV6442| PID    Reference Object                     Distance      Geod. Az  |
 HV6442|                                                           dddmmss.s |
 HV6442| CX2206 CHAR WM 2                            12.500 METERS 08600     |
 HV6442| CX2204 CHAR RM 1                                          11101     |
 HV6442| CX2207 CHAR WM 3                             6.635 METERS 14326     |
 HV6442| HV6435 CAT                                 APPROX. 2.7 KM 1715942.3 |
 HV6442| HV6433 TAR BAY 4 LIGHT RED BEACON 4        497.421 METERS 2073545.8 |
 HV6442| HV6441 TAR BAY 3 LIGHT BLACK BEACON 3      APPROX. 0.7 KM 2640913.6 |
 HV6442| HV6656 TAR BAY 2 LIGHT RED BEACON 2 A      APPROX. 1.8 KM 2752527.1 |
 HV6442| HV6654 BARREN ISLAND LIGHT RED BCN C       APPROX. 2.5 KM 2803124.7 |
 HV6442| HV6655 TAR BAY 1 LIGHT BLACK BEACON B      APPROX. 2.1 KM 2821023.1 |
 HV6442| CX2205 CHAR WM 1                            12.285 METERS 35628     |
 HV6442|---------------------------------------------------------------------|
 HV6442
 HV6442                          SUPERSEDED SURVEY CONTROL
 HV6442
 HV6442  NAD 83(1986)-  38 20 49.90578(N)    076 14 15.91433(W) AD(       ) 2
 HV6442  NAD 27      -  38 20 49.46500(N)    076 14 17.11600(W) AD(       ) 2
 HV6442
 HV6442.Superseded values are not recommended for survey control.
 HV6442
 HV6442.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6442.See file dsdata.pdf to determine how the superseded data were derived.
 HV6442
 HV6442_MARKER: DS = TRIANGULATION STATION DISK
 HV6442_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6442_STAMPING: CHAR 1929
 HV6442_MARK LOGO: CGS
 HV6442_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6442+STABILITY: SURFACE MOTION
 HV6442
 HV6442  HISTORY     - Date     Condition        Report By
 HV6442  HISTORY     - 1929     MONUMENTED       CGS
 HV6442  HISTORY     - 1932     GOOD             CGS
 HV6442
 HV6442                          STATION DESCRIPTION
 HV6442
 HV6442'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (JS)
 HV6442'STATION IS ON SW POINT OF MEEKING NECK AT CHARITY POINT, ON A
 HV6442'SHELL BANK ABOUT 4 FEET ABOVE HIGH-WATER LINE, 10 METERS N OF
 HV6442'EXTREME END OF POINT, 2 METERS E OF SHORE LINE OF TAR BAY.
 HV6442'
 HV6442'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6442'CONCRETE, AS DESCRIBED IN NOTES 1A, AND 11A.
 HV6442'
 HV6442'UNDERGROUND MARK IS A BLOCK OF CONCRETE BELOW GROUND CONTAINING
 HV6442'A GLASS BOTTLE, AS DESCRIBED IN NOTE 7D.
 HV6442'
 HV6442'WITNESS MARKS ARE TREES MARKED WITH A TRIANGULAR BLAZE WITH NAIL
 HV6442'AT CENTER AND EACH APEX OF THE TRIANGLE, AS DESCRIBED IN NOTE
 HV6442'15A.  THERE ARE THREE WITNESS MARKS.
 HV6442'
 HV6442'WITNESS MARK NO.1 IS ALMOST DUE N, AND IS THE LARGEST TREE OF
 HV6442'GROUP OF WILD CHERRY TREES.
 HV6442'
 HV6442'WITNESS MARK NO.2 IS E BY N.  IT IS A LONE CHERRY TREE.
 HV6442'
 HV6442'WITNESS MARK NO.3 IS SE.  IT IS A PERSIMMON TREE.
 HV6442
 HV6442                          STATION RECOVERY (1932)
 HV6442
 HV6442'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HV6442'ORIGINAL DESCRIPTION SATISFACTORY AND ADEQUATE.  THE CENTER MARK
 HV6442'IS R.M.NO.2 OF CHAR 2, 1932.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6440 ***********************************************************************
 HV6440  DESIGNATION -  CHAR 2
 HV6440  PID         -  HV6440
 HV6440  STATE/COUNTY-  MD/DORCHESTER
 HV6440  COUNTRY     -  US
 HV6440  USGS QUAD   -  HONGA (2016)
 HV6440
 HV6440                         *CURRENT SURVEY CONTROL
 HV6440  ______________________________________________________________________
 HV6440* NAD 83(1991) POSITION- 38 20 49.77556(N) 076 14 15.46092(W)   ADJUSTED
 HV6440* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6440  ______________________________________________________________________
 HV6440  GEOID HEIGHT    -        -35.039 (meters)                     GEOID18
 HV6440  LAPLACE CORR    -         -6.44  (seconds)                    DEFLEC18
 HV6440  HORZ ORDER      -  FIRST
 HV6440
 HV6440.The horizontal coordinates were established by classical geodetic methods
 HV6440.and adjusted by the National Geodetic Survey in January 1992.
 HV6440
 HV6440.The orthometric height was scaled from a topographic map.
 HV6440
 HV6440.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6440.GEOID18 height accuracy estimate available here.
 HV6440
 HV6440.Click photographs - Photos may exist for this station.
 HV6440
 HV6440.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6440
 HV6440. The following values were computed from the NAD 83(1991) position.
 HV6440
 HV6440;                    North         East     Units Scale Factor Converg.
 HV6440;SPC MD       -    75,815.980   466,642.811   MT  0.99999213   +0 28 42.6
 HV6440;SPC MD       -   248,739.59  1,530,977.29   sFT  0.99999213   +0 28 42.6
 HV6440;UTM  18      - 4,245,059.013   391,851.849   MT  0.99974404   -0 46 04.5
 HV6440
 HV6440!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6440!SPC MD       -   1.00000538  x   0.99999213  =   0.99999751
 HV6440!UTM  18      -   1.00000538  x   0.99974404  =   0.99974942
 HV6440
 HV6440:                Primary Azimuth Mark                     Grid Az
 HV6440:SPC MD       -  CHAR 2 RM 3 AZIMUTH                      126 07 23.1
 HV6440:UTM  18      -  CHAR 2 RM 3 AZIMUTH                      127 22 10.2
 HV6440
 HV6440_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9185145059(NAD 83)
 HV6440
 HV6440|---------------------------------------------------------------------|
 HV6440| PID    Reference Object                     Distance      Geod. Az  |
 HV6440|                                                           dddmmss.s |
 HV6440| CX2209 CHAR 2 RM 2 RESET                    22.894 METERS 11321     |
 HV6440| CX2210 CHAR 2 RM 3 AZIMUTH                                1263605.7 |
 HV6440| HV6671 JARBOESVILLE CEDAR PT FARM TK       APPROX.14.0 KM 2494510.4 |
 HV6440| HV6442 CHAR                                 11.344 METERS 29052     |
 HV6440| CX2208 CHAR 2 RM                            21.205 METERS 35937     |
 HV6440|---------------------------------------------------------------------|
 HV6440
 HV6440                          SUPERSEDED SURVEY CONTROL
 HV6440
 HV6440  NAD 83(1986)-  38 20 49.77469(N)    076 14 15.47785(W) AD(       ) 1
 HV6440  NAD 27      -  38 20 49.33400(N)    076 14 16.67900(W) AD(       ) 1
 HV6440
 HV6440.Superseded values are not recommended for survey control.
 HV6440
 HV6440.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6440.See file dsdata.pdf to determine how the superseded data were derived.
 HV6440
 HV6440_MARKER: DS = TRIANGULATION STATION DISK
 HV6440_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6440_STAMPING: CHAR 2 1932
 HV6440_MARK LOGO: CGS
 HV6440_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6440+STABILITY: SURFACE MOTION
 HV6440
 HV6440  HISTORY     - Date     Condition        Report By
 HV6440  HISTORY     - 1932     MONUMENTED       CGS
 HV6440  HISTORY     - 1934     GOOD             CGS
 HV6440  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6440  HISTORY     - 1961     SEE DESCRIPTION  CGS
 HV6440  HISTORY     - 1981     MARK NOT FOUND   MDDNR
 HV6440
 HV6440                          STATION DESCRIPTION
 HV6440
 HV6440'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HV6440'STATION IS ON SW POINT OF MEEKING NECK AT CHARITY POINT, ON SHELL
 HV6440'BANK ABOUT 4 FEET ABOVE HIGH WATER ABOUT 13 METERS E OF SHORE
 HV6440'LINE OF TAR BAY.  (SEE DESCRIPTION OF CHAR 1929)
 HV6440'
 HV6440'SURFACE AND REFERENCE MARK NO.2 ARE STANDARD BRONZE DISKS SET IN
 HV6440'CONCRETE, AS DESCRIBED IN NOTE 1A.
 HV6440'
 HV6440'UNDERGROUND MARK IS EMBEDDED IN EARTH 3 FEET BELOW SURFACE OF
 HV6440'GROUND, A BOTTLE IN UPRIGHT POSITION, AS DESCRIBED IN NOTE 10A.
 HV6440'
 HV6440'REFERENCE MARK NO.1 IS MARKED BY HOLE IN CENTER OF TOP OF
 HV6440'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6440'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6440'INCHES.  LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6440'POST.
 HV6440'
 HV6440'REFERENCE MARK NO.2 IS CENTER MARK OF STATION CHAR 1929.
 HV6440'
 HV6440'DISTANCE REFERENCE MARK NO.1 TO REFERENCE MARK NO.2 IS 20.103
 HV6440'METERS (65.955 FEET).
 HV6440'
 HV6440'HEIGHT OF SIGNAL ABOVE STATION MARK - 20 METERS.
 HV6440
 HV6440                          STATION RECOVERY (1934)
 HV6440
 HV6440'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6440'STATION IS 1/4 MILE NW OF HONGA POST OFFICE, WHICH IS 23 MILES BY
 HV6440'ROAD SW OF CAMBRIDGE, MARYLAND, 1/4 MILE W OF BRIDGE OVER ENTRANCE
 HV6440'OF FISHING CREEK TO HONGA RIVER.  STATION MARK IN GOOD CONDITION,
 HV6440'STAMPED CHAR - 2 1931, PROJECTS 8 INCHES ABOVE GROUND.  IT IS A
 HV6440'BRONZE TABLET AS DESCRIBED IN NOTE 1A, 25 FEET E OF 4-FOOT BANK,
 HV6440'22 FEET E OF 6-INCH WALNUT TREE WITH A TRIANGULAR BLAZE ON N
 HV6440'SIDE.
 HV6440'
 HV6440'REFERENCE MARK NO.1 (M.S.F.C., U.S.C.S.) IS IN GOOD CONDITION,
 HV6440'THE DISTANCE TO MARK WAS FOUND CORRECT, BUT DIRECTION WAS NOT.
 HV6440'
 HV6440'REFERENCE MARK NO.2 IS OLD 1929 STATION MARK, RESET AND STAMPED
 HV6440'NO.2 1932, 1934.  IT IS A SQUARE CONCRETE POST, PROJECTS 6 INCHES
 HV6440'ABOVE GROUND, 9 FEET N OF HIGH-WATER MARK, 16 FEET SE OF 6-INCH
 HV6440'CEDAR TREE, 75.11 FEET ESE OF STATION.
 HV6440'
 HV6440'REFERENCE MARK NO.3 1932, 1934, IS A STANDARD BRONZE DISK SET IN
 HV6440'CONCRETE AS DESCRIBED IN NOTE 11A, IS IN THE VILLAGE OF HONGA
 HV6440'POST OFFICE, ABOUT 0.4 MILE E OF STATION, 0.5 MILE SSE OF BRIDGE
 HV6440'OVER HONGA RIVER, 6 PACES W OF GRAVEL ROAD AT CURVE, 17 PACES S
 HV6440'OF GATE OF YARD.
 HV6440'
 HV6440'A 64-FOOT TOWER USED.
 HV6440
 HV6440                          STATION RECOVERY (1942)
 HV6440
 HV6440'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6440'THIS STATION WAS FOUND LYING IN THE WATER, WHERE IT HAD BEEN WASHED
 HV6440'FROM ITS ORIGINAL POSITION.  THIS STATION IS DESTROYED.  REFERENCE
 HV6440'MARKS COULD NOT BE FOUND.
 HV6440
 HV6440                          STATION RECOVERY (1961)
 HV6440
 HV6440'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6440'STATION MARK PREVIOUSLY REPORTED AS DESTROYED.  REFERENCE MARK
 HV6440'NO.2 WAS RECOVERED IN GOOD CONDITION.  REFERENCE MARKS 1 AND 3
 HV6440'WERE NOT FOUND ALTHOUGH FROM THE DIRECTION AND DISTANCE GIVEN IN
 HV6440'THE DESCRIPTION OF J.B. JR. IN 1934 REFERENCE MARK NO. 1 SHOULD
 HV6440'STILL BE INTACT.
 HV6440'
 HV6440'REFERENCE MARK NO. 2 IS ON THE SOUTH EDGE OF A SMALL HUMMOCK, AT
 HV6440'CHARITY POINT AND ABOUT 25 FT. E OF THE MHWL OF TAR BAY.  MONUMENT
 HV6440'PROJECTS ABOUT 4 INCHES.
 HV6440
 HV6440                          STATION RECOVERY (1981)
 HV6440
 HV6440'RECOVERY NOTE BY MD DEPT OF NAT RES 1981 (LW)
 HV6440'CHAR 2 NO 2 1929, 1932 1934 WASHED OUT AND LYING ON SHORE.
 HV6440'
 HV6440'SUBSURFACE MARK SEARCHED FOR AND NOT FOUND.
 HV6440'
 HV6440'DISTANCE AND DIRECTION FROM NEAREST TOWN--1 MI N OF FISHING CR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1714 ***********************************************************************
 HU1714  DESIGNATION -  CHARITY
 HU1714  PID         -  HU1714
 HU1714  STATE/COUNTY-  MD/WICOMICO
 HU1714  COUNTRY     -  US
 HU1714  USGS QUAD   -  DELMAR (2016)
 HU1714
 HU1714                         *CURRENT SURVEY CONTROL
 HU1714  ______________________________________________________________________
 HU1714* NAD 83(1991) POSITION- 38 24 11.76683(N) 075 36 10.13286(W)   ADJUSTED
 HU1714* NAVD 88 ORTHO HEIGHT -    14.    (meters)       46.    (feet) SCALED
 HU1714  ______________________________________________________________________
 HU1714  GEOID HEIGHT    -        -35.765 (meters)                     GEOID18
 HU1714  LAPLACE CORR    -         -1.25  (seconds)                    DEFLEC18
 HU1714  HORZ ORDER      -  SECOND
 HU1714
 HU1714.The horizontal coordinates were established by classical geodetic methods
 HU1714.and adjusted by the National Geodetic Survey in January 1992.
 HU1714
 HU1714.The orthometric height was scaled from a topographic map.
 HU1714
 HU1714.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1714.GEOID18 height accuracy estimate available here.
 HU1714
 HU1714.Click photographs - Photos may exist for this station.
 HU1714
 HU1714.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1714
 HU1714. The following values were computed from the NAD 83(1991) position.
 HU1714
 HU1714;                    North         East     Units Scale Factor Converg.
 HU1714;SPC MD       -    82,699.805   522,036.407   MT  0.99998364   +0 52 36.9
 HU1714;SPC MD       -   271,324.28  1,712,714.45   sFT  0.99998364   +0 52 36.9
 HU1714;UTM  18      - 4,250,732.049   447,365.394   MT  0.99963412   -0 22 28.1
 HU1714
 HU1714!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1714!SPC MD       -   1.00000345  x   0.99998364  =   0.99998709
 HU1714!UTM  18      -   1.00000345  x   0.99963412  =   0.99963757
 HU1714
 HU1714:                Primary Azimuth Mark                     Grid Az
 HU1714:SPC MD       -  CHARITY RM 3 AZIMUTH                     196 24 59.5
 HU1714:UTM  18      -  CHARITY RM 3 AZIMUTH                     197 40 04.5
 HU1714
 HU1714_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4736550732(NAD 83)
 HU1714
 HU1714|---------------------------------------------------------------------|
 HU1714| PID    Reference Object                     Distance      Geod. Az  |
 HU1714|                                                           dddmmss.s |
 HU1714| HU1711 DELMAR STANDPIPE                    APPROX. 6.8 KM 0194129.5 |
 HU1714| DC7904 CHARITY RM 1                         31.453 METERS 04138     |
 HU1714| DC7905 CHARITY RM 1 RESET                   31.458 METERS 04145     |
 HU1714| HU1705 MARYLAND POL STA KGA 913 MAST       APPROX. 3.9 KM 0604311.8 |
 HU1714| HU1782 SALISBURY DISHAROON LUMBER STK      APPROX. 3.4 KM 1615038.6 |
 HU1714| HU1781 SALISBURY SUNSHINE LAUNDRY STK      APPROX. 3.7 KM 1640758.5 |
 HU1714| HU1776 SALISBURY WICOMICO PRESB CH         APPROX. 4.0 KM 1751627.9 |
 HU1714| HU1762 SALISBURY ASBURY ME CH SPIRE        APPROX. 4.0 KM 1764139.6 |
 HU1714| HU1764 SALISBURY COURTHOUSE SPIRE          APPROX. 4.2 KM 1764200.0 |
 HU1714| HU1753 SALISBURY STANDPIPE                 APPROX. 4.0 KM 1790416.7 |
 HU1714| HU1756 SALISBURY ALLENS BARN SPIRE         APPROX. 6.6 KM 1823233.7 |
 HU1714| HU1713 SALISBURY E SHORE PUB SERV MST      APPROX. 1.5 KM 1911646.1 |
 HU1714| DC7907 CHARITY RM 3 AZIMUTH                               1971736.4 |
 HU1714| DC7906 CHARITY RM 2                         26.543 METERS 33142     |
 HU1714|---------------------------------------------------------------------|
 HU1714
 HU1714                          SUPERSEDED SURVEY CONTROL
 HU1714
 HU1714  NAD 83(1986)-  38 24 11.75917(N)    075 36 10.15721(W) AD(       ) 2
 HU1714  NAD 27      -  38 24 11.34200(N)    075 36 11.42100(W) AD(       ) 2
 HU1714
 HU1714.Superseded values are not recommended for survey control.
 HU1714
 HU1714.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1714.See file dsdata.pdf to determine how the superseded data were derived.
 HU1714
 HU1714_MARKER: DS = TRIANGULATION STATION DISK
 HU1714_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1714_STAMPING: CHARITY 1932
 HU1714_MARK LOGO: CGS
 HU1714_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1714+STABILITY: SURFACE MOTION
 HU1714
 HU1714  HISTORY     - Date     Condition        Report By
 HU1714  HISTORY     - 1932     MONUMENTED       CGS
 HU1714  HISTORY     - 1932     GOOD             CGS
 HU1714  HISTORY     - 1934     GOOD             CGS
 HU1714  HISTORY     - 1934     GOOD             MDGS
 HU1714  HISTORY     - 1942     GOOD             CGS
 HU1714  HISTORY     - 1956     GOOD             CGS
 HU1714  HISTORY     - 1983     MARK NOT FOUND   LOCENG
 HU1714
 HU1714                          STATION DESCRIPTION
 HU1714
 HU1714'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1714'TO REACH FROM SALISBURY HIGH SCHOOL ON HIGHWAY KNOWN AS
 HU1714'JERSEY ROAD OR AS OLD DELMAR ROAD PROCEED 2 MILES N TO COMBINED
 HU1714'HOME AND STORE OF MR. J.S. JONES, E ALONG PRIVATE ROAD LEADING
 HU1714'INTO PROPERTY OF MR. JONES AT SOUTHERN END OF HIS HOUSE FOR
 HU1714'500 FEET, THEN N ACROSS FIELD FOR 160 FEET TO TOP OF SAND
 HU1714'HILL.  STATION IS AT TOP OF SAND HILL IN FIELD SUBJECT TO
 HU1714'CULTIVATION.
 HU1714'
 HU1714'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1714'CONCRETE, AS DESCRIBED.
 HU1714'
 HU1714'THERE IS NO SURFACE MARK AT THIS STATION.
 HU1714'
 HU1714'REFERENCE MARKS ARE SET ALONG NORTHERN EDGE OF FIELD.  CENTER
 HU1714'AND REFERENCE MARKS ARE STAMPED WITH NUMBERS, YEAR AND NAME OF
 HU1714'STATION.
 HU1714'
 HU1714'HEIGHT OF SIGNAL ABOVE STATION MARK - 26.9 METERS.
 HU1714
 HU1714                          STATION RECOVERY (1932)
 HU1714
 HU1714'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (CDM)
 HU1714'STATION IS ABOUT 2 MILES N FROM SALISBURY HIGH SCHOOL
 HU1714'ON HIGHWAY KNOWN AS JERSEY ROAD AND AS OLD DELMAR ROAD ON LAND
 HU1714'OWNED AND OCCUPIED BY MR. J.S. JONES WHOSE ADDRESS IS SALISBURY,
 HU1714'MARYLAND, R.F.D. NO.2.  THE STATION WHICH IS ON TOP OF SAND HILL
 HU1714'ON THE JONES PROPERTY, APPROXIMATELY 500 FEET E OF THE HIGHWAY,
 HU1714'WAS RECOVERED IN GOOD CONDITION.  MARK IS SET 12 INCHES BELOW
 HU1714'SURFACE OF GROUND AS THE FIELD IS SUBJECT TO CULTIVATION.  TWO
 HU1714'ORIGINAL REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.  AN
 HU1714'ADDITIONAL REFERENCE MARK, AS DESCRIBED, WAS
 HU1714'ESTABLISHED AS AN AZIMUTH MARK.
 HU1714'
 HU1714'REFERENCE MARK NO.1 (OLD) IS NE OF THE STATION IN E-W LINE
 HU1714'BETWEEN TWO FIELDS.
 HU1714'
 HU1714'REFERENCE MARK NO.2 (OLD) IS NW OF THE STATION IN E-W LINE
 HU1714'BETWEEN TWO FIELDS, APPROXIMATELY 450 FEET E OF THE HIGHWAY,
 HU1714'APPROXIMATELY 200 FEET SE OF YELLOW HOUSE ON E SIDE OF HIGHWAY.
 HU1714'
 HU1714'REFERENCE MARK NO.3 (NEW) IS SSW OF STATION, 5 METERS E OF
 HU1714'CENTER LINE OF HIGHWAY, APPROXIMATELY 250 FEET NNE OF A TWO-STORY
 HU1714'GRAY FRAME HOUSE ON W SIDE OF HIGHWAY.
 HU1714'
 HU1714'THE DISTANCES TO THE OLD REFERENCES WERE CHECKED BUT THE
 HU1714'DIRECTIONS WERE FOUND TO BE REVERSED 180 DEGREES.
 HU1714'
 HU1714'REACHED FROM SALISBURY BY TAKING THE JERSEY ROAD, WHICH IS THE
 HU1714'FIRST STREET W OF DRAW-BRIDGE, N FOR 2.3 MILES TO COMBINED HOME
 HU1714'AND STORE OF MR. J.S. JONES ON THE E SIDE OF HIGHWAY.  TURN E
 HU1714'INTO LANE AT S END OF HOUSE AND FOLLOW ABOUT 500 FEET TO EDGE
 HU1714'OF FIELD AT FOOT OF SMALL HILL, TURN N AND CONTINUE FOR ABOUT
 HU1714'150 FEET TO TOP OF HILL AND STATION.
 HU1714
 HU1714                          STATION RECOVERY (1934)
 HU1714
 HU1714'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU1714'RECOVERED AS DESCRIBED, EXCEPT OLD REFERENCE MARK NO.1 WHICH HAD
 HU1714'BEEN DISTURBED, SO A NEW REFERENCE MARK NO.1 WAS SET AS NEAR AS
 HU1714'POSSIBLE IN THE OLD POSITION.  THIS NEW R.M.NO.1 WAS MARKED
 HU1714'CHARITY 1934.
 HU1714'
 HU1714'ADDITION TO THE DESCRIPTION TO REFERENCE MARK NO.3, THE AZIMUTH
 HU1714'MARK, IS 4 FEET NNW OF TELEPHONE POLE NO.2957, VISIBLE FROM
 HU1714'GROUND.
 HU1714'
 HU1714'STATION MARK WAS SUBMERGED ABOUT 12 INCHES.
 HU1714'
 HU1714'REFERENCE MARKS PROJECTED ABOUT 6 INCHES ABOVE GROUND.
 HU1714'
 HU1714'A 90-FOOT TOWER WILL CLEAR ALL LINES OBSERVED.
 HU1714'
 HU1714'NO PROMINENT OBJECT VISIBLE FROM GROUND.
 HU1714'
 HU1714'STATION AND OLD MARKS STAMPED CHARITY 1932.
 HU1714
 HU1714                          STATION RECOVERY (1934)
 HU1714
 HU1714'RECOVERY NOTE BY MARYLAND GEODETIC SURVEY 1934
 HU1714'STATION AND REFERENCE MARKS NO.2 AND NO.3 ARE AS
 HU1714'DESCRIBED.  REFERENCE MARK NO.1 WAS DISTURBED AND LEANING
 HU1714'SOMEWHAT TO W.
 HU1714
 HU1714                          STATION RECOVERY (1942)
 HU1714
 HU1714'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1714'THE STATION IS LOCATED ABOUT 2 MILES N FROM THE SALISBURY
 HU1714'HIGH SCHOOL IN SALISBURY ON THE ROAD KNOWN AS JERSEY
 HU1714'ROAD, OR OLD DELMAR ROAD, ON LAND OWNED BY MR. J.S. JONES, 500
 HU1714'FEET E OF THE ROAD AND ON A SAND HILL.  THE STATION IS A BRONZE
 HU1714'DISK, STAMPED CHARITY 1932, SET IN THE TOP OF A 12-INCH BY
 HU1714'18-INCH CONCRETE MONUMENT, WHICH IS 6 INCHES BELOW THE SURFACE
 HU1714'OF THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1714'
 HU1714'REFERENCE MARK NO.1 IS LOCATED 101.22 FEET NE OF THE STATION
 HU1714'IN THE E-W LINE BETWEEN TWO FIELDS.  THE MARK IS A BRONZE DISK,
 HU1714'WITH THE ARROW POINTING TOWARD THE STATION, STAMPED CHARITY NO.1
 HU1714'1934, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT,
 HU1714'WHICH IS FLUSH WITH THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1714'
 HU1714'REFERENCE MARK NO.2 IS LOCATED 87.12 FEET NW OF THE STATION IN
 HU1714'THE E-W LINE OF TWO FIELDS, APPROXIMATELY 450 FEET E OF THE
 HU1714'HIGHWAY, AND 200 FEET SE OF A YELLOW HOUSE ON THE E SIDE OF THE
 HU1714'HIGHWAY.  THE MARK IS A BRONZE DISK, WITH THE ARROW POINTING
 HU1714'TOWARD THE STATION, STAMPED CHARITY NO.2 1932, SET IN THE TOP OF
 HU1714'A 12-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 8 INCHES ABOVE
 HU1714'THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1714'
 HU1714'REFERENCE MARK NO.3 IS LOCATED ABOUT 1/4 MILE SSE OF THE STATION,
 HU1714'5 METERS E OF THE CENTER LINE OF THE HIGHWAY, AND 252 FEET NE
 HU1714'OF A TWO-STORY GRAY FRAME HOUSE ON THE W SIDE OF THE HIGHWAY.  THE
 HU1714'MARK IS A BRONZE DISK, WITH THE ARROW POINTING TOWARD THE
 HU1714'STATION, STAMPED CHARITY NO.3 1932, SET IN THE TOP OF A 12-INCH
 HU1714'SQUARE CONCRETE MONUMENT, WHICH EXTENDS 2 INCHES ABOVE THE
 HU1714'GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1714
 HU1714                          STATION RECOVERY (1956)
 HU1714
 HU1714'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (WFD)
 HU1714'ALL MARKS WERE RECOVERED AND FOUND TO BE IN GOOD CONDITION.  THE
 HU1714'ORIGINAL DESCRIPTION IS CORRECT AND ADEQUATE.
 HU1714'
 HU1714'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HU1714
 HU1714                          STATION RECOVERY (1983)
 HU1714
 HU1714'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (MRA)
 HU1714'CHARITY 1932 NOT RECOVERED.
 HU1714'
 HU1714'A THROUGH SEARCH WAS MADE FOR STA MARK WITH NO SUCCESS.  RM NO. 1
 HU1714'WAS FOUND PROJECTING 24 INCHES AND LEANING TO THE SOUTH.  RM NO. 2
 HU1714'WAS SEARCHED FOR BUT NOT RECOVERED.  A MASS OF CONCRETE WAS FOUND
 HU1714'IN THE HEDGE ROW WHICH MAY HAVE BEEN THE STATION MARK.  THE
 HU1714'AZIMUTH MARK WAS NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1963 ***********************************************************************
 HU1963  DESIGNATION -  CHARLES
 HU1963  PID         -  HU1963
 HU1963  STATE/COUNTY-  MD/CAROLINE
 HU1963  COUNTRY     -  US
 HU1963  USGS QUAD   -  HICKMAN (2016)
 HU1963
 HU1963                         *CURRENT SURVEY CONTROL
 HU1963  ______________________________________________________________________
 HU1963* NAD 83(1991) POSITION- 38 45 00.95972(N) 075 43 00.12949(W)   ADJUSTED
 HU1963* NAVD 88 ORTHO HEIGHT -    11.9   (meters)       39.    (feet) VERTCON3
 HU1963  ______________________________________________________________________
 HU1963  GEOID HEIGHT    -        -35.325 (meters)                     GEOID18
 HU1963  LAPLACE CORR    -         -2.79  (seconds)                    DEFLEC18
 HU1963  HORZ ORDER      -  SECOND
 HU1963
 HU1963.The horizontal coordinates were established by classical geodetic methods
 HU1963.and adjusted by the National Geodetic Survey in January 1992.
 HU1963
 HU1963.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1963.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1963
 HU1963.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1963.GEOID18 height accuracy estimate available here.
 HU1963
 HU1963.Click photographs - Photos may exist for this station.
 HU1963
 HU1963.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1963
 HU1963. The following values were computed from the NAD 83(1991) position.
 HU1963
 HU1963;                    North         East     Units Scale Factor Converg.
 HU1963;SPC MD       -   121,067.959   511,548.156   MT  0.99995224   +0 48 19.6
 HU1963;SPC MD       -   397,203.80  1,678,304.24   sFT  0.99995224   +0 48 19.6
 HU1963;UTM  18      - 4,289,307.808   437,721.539   MT  0.99964776   -0 26 55.0
 HU1963
 HU1963!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1963!SPC MD       -   1.00000368  x   0.99995224  =   0.99995592
 HU1963!UTM  18      -   1.00000368  x   0.99964776  =   0.99965144
 HU1963
 HU1963:                Primary Azimuth Mark                     Grid Az
 HU1963:SPC MD       -  CHARLES AZ MK                            199 48 12.7
 HU1963:UTM  18      -  CHARLES AZ MK                            201 03 27.3
 HU1963
 HU1963_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3772189307(NAD 83)
 HU1963
 HU1963|---------------------------------------------------------------------|
 HU1963| PID    Reference Object                     Distance      Geod. Az  |
 HU1963|                                                           dddmmss.s |
 HU1963| DC7909 CHARLES RM 1                         26.776 METERS 04041     |
 HU1963| HU1961 BOUNDARY MONUMENT 20                 18.672 METERS 08627     |
 HU1963| DC7910 CHARLES RM 2                         23.350 METERS 16036     |
 HU1963| DC7908 CHARLES AZ MK                                      2003632.3 |
 HU1963|---------------------------------------------------------------------|
 HU1963
 HU1963                          SUPERSEDED SURVEY CONTROL
 HU1963
 HU1963  NAD 83(1986)-  38 45 00.95339(N)    075 43 00.14608(W) AD(       ) 2
 HU1963  NAD 27      -  38 45 00.54530(N)    075 43 01.39550(W) AD(       ) 2
 HU1963  NGVD 29 (07/19/86)   12.1    (m)           40.     (f) VERT ANG       
 HU1963
 HU1963.Superseded values are not recommended for survey control.
 HU1963
 HU1963.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1963.See file dsdata.pdf to determine how the superseded data were derived.
 HU1963
 HU1963_MARKER: DS = TRIANGULATION STATION DISK
 HU1963_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1963
 HU1963  HISTORY     - Date     Condition        Report By
 HU1963  HISTORY     - 1962     MONUMENTED       CGS
 HU1963  HISTORY     - 1975     GOOD             NGS
 HU1963  HISTORY     - 1976     GOOD             NGS
 HU1963
 HU1963                          STATION DESCRIPTION
 HU1963
 HU1963'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1963'THE STATION IS LOCATED ABOUT 6.0 MILES WEST OF BRIDGEVILLE,
 HU1963'DELAWARE, 5.0 MILES NORTHEAST OF FEDERALSBURG AND ON PROPERTY
 HU1963'OWNED BY MR. CHARLES MITCHELL, WHO LIVES WEST-SOUTHWEST ACROSS THE
 HU1963'ROAD FROM THE STATION.
 HU1963'
 HU1963'TO REACH THE STATION FROM THE INTERSECTION OF MAIN STREET AND
 HU1963'CENTRAL AVENUE IN FEDERALSBURG, MARYLAND.  GO EAST ON STATE
 HU1963'HIGHWAY 318, EAST CENTRAL AVENUE, FOR 0.35 MILE TO THE JUNCTION
 HU1963'OF STATE HIGHWAYS 318 AND 306.  TAKE THE LEFT FORK AND GO
 HU1963'NORTH-NORTHEAST ON STATE HIGHWAY 306 FOR 4.2 MILES TO A
 HU1963'Y-FORK.  TAKE THE LEFT FORK, A GRAVELED ROAD AND GO
 HU1963'NORTH-NORTHEAST ON THE GRAVELED ROAD FOR 0.5 MILE TO A
 HU1963'POWERLINE POLE NO. 61-110, A STANDARD METAL WITNESS POST AND
 HU1963'MARKER AND THE AZIMUTH MARK ON THE RIGHT, EAST, SIDE OF THE
 HU1963'GRAVELED ROAD.  CONTINUE NORTH-NORTHEAST ON THE
 HU1963'GRAVELED ROAD FOR 0.18 MILE TO THE CORNER OF THE TALL PINE
 HU1963'WOODS ON THE LEFT.  TURN LEFT AND GO NORTHEAST ON A DIM TRACK
 HU1963'WOODS ROAD THROUGH SMALL BRUSH FOR 0.05 MILE TO A STANDARD METAL
 HU1963'WITNESS POST AND MARKER AND THE STATION.
 HU1963'
 HU1963'THE STATION MARK, A STANDARD DISK STAMPED CHARLES 1962, IS SET
 HU1963'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT ABOUT 24 INCHES
 HU1963'BELOW THE SURFACE OF THE GROUND.  IT IS 88.2 FEET SOUTH-SOUTHWEST
 HU1963'OF A STANDARD METAL WITNESS POST AND MARKER, 77.3 FEET NORTH OF
 HU1963'ANOTHER STANDARD METAL WITNESS POST AND MARKER AND 50.6 FEET WEST
 HU1963'OF A 14-INCH PINE TREE.
 HU1963'
 HU1963'REFERENCE MARK 1, A STANDARD DISK STAMPED CHARLES NO 1 1962,
 HU1963'IS SET IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING
 HU1963'ABOUT 4 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 69.2 FEET
 HU1963'NORTH OF A 14-INCH PINE TREE AND 1.3 FEET WEST OF A STANDARD METAL
 HU1963'WITNESS POST AND MARKER.
 HU1963'
 HU1963'REFERENCE MARK 2, A STANDARD DISK STAMPED CHARLES NO 2 1962, IS
 HU1963'SET IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING
 HU1963'ABOUT 4 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 29.2 FEET
 HU1963'NORTH-NORTHEAST OF THE NORTHEAST CORNER OF A CULTIVATED FIELD, 6.6
 HU1963'FEET SOUTH OF A 14-INCH OAK TREE AND 1.3 FEET WEST OF A STANDARD
 HU1963'METAL WITNESS POST AND MARKER.
 HU1963'
 HU1963'THE AZIMUTH MARK, A STANDARD DISK STAMPED CHARLES 1962, IS SET
 HU1963'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 4
 HU1963'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 34.0 FEET EAST
 HU1963'OF THE CENTERLINE OF A GRAVELED ROAD, 2.0 FEET NORTH OF POWERLINE
 HU1963'POLE NO. 61-110 AND 1.0 FEET NORTH OF A STANDARD METAL WITNESS
 HU1963'POST AND MARKER.
 HU1963'
 HU1963'BOUNDARY MONUMENT NO. 20.  THE TOP PORTION WAS FOUND LYING IN THE
 HU1963'WOODS ABOUT 66.0 FEET EAST OF THE NORTHEAST CORNER OF A CULTIVATED
 HU1963'FIELD, IN A LOW WOODS AREA, UNDER WATER ON THIS DATE, ABOUT 5.0
 HU1963'FEET NORTHEAST OF A LARGE DEAD TREE TRUNK THAT IS ABOUT 30 INCHES
 HU1963'HIGH.  THE TOP PORTION OF THE MONUMENT IS ABOUT 36 INCHES
 HU1963'LONG.  NO EVIDENCE OF THE BASE PART WAS LOCATED.  IT IS A
 HU1963'12-INCH SQUARE LIMESTONE MONUMENT WITH THE COAT OF ARMS ON TWO
 HU1963'SIDES.  THE MONUMENT WAS NOT TRAVERSED TO OR INTERSECTED ON THIS
 HU1963'DATE.
 HU1963'
 HU1963'HEIGHT OF LIGHT ABOVE STATION MARK 31 METERS.
 HU1963
 HU1963                          STATION RECOVERY (1975)
 HU1963
 HU1963'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HU1963'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1963'CONDITION AS DESCRIBED IN 1962 DESCRIPTION.  A SHORTER DISTANCE
 HU1963'OF 0.015 FOOT OR 0.005 METER WAS NOTED TO REFERENCE MARK 1.  ALL
 HU1963'OTHER DISTANCES AND DIRECTIONS WERE WITHIN CLOSE AGREEMENT WITH
 HU1963'THE 1961 OBSERVATIONS.
 HU1963'
 HU1963'A POINT WAS SELECTED FOR BOUNDARY MONUMENT NUMBER 20, THERE IS
 HU1963'A SEPARATE REPORT ON IT.
 HU1963'
 HU1963'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1963'5 MILES NORTHWEST OF FEDERALSBURG.
 HU1963
 HU1963                          STATION RECOVERY (1976)
 HU1963
 HU1963'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1963'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1963'CONDITION AS PREVIOUSLY DESCRIBED.
 HU1963'
 HU1963'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 18 WAS RESET AT
 HU1963'THIS DATE, SEE DESCRIPTION THEREOF.
 HU1963'
 HU1963'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1963'5 MILES NORTHEAST OF FEDERALSBURG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6062 ***********************************************************************
 HV6062  DESIGNATION -  CHARLES
 HV6062  PID         -  HV6062
 HV6062  STATE/COUNTY-  MD/TALBOT
 HV6062  COUNTRY     -  US
 HV6062  USGS QUAD   -  OXFORD (2016)
 HV6062
 HV6062                         *CURRENT SURVEY CONTROL
 HV6062  ______________________________________________________________________
 HV6062* NAD 83(1991) POSITION- 38 40 27.45706(N) 076 07 42.28501(W)   ADJUSTED
 HV6062* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6062  ______________________________________________________________________
 HV6062  GEOID HEIGHT    -        -34.751 (meters)                     GEOID18
 HV6062  LAPLACE CORR    -         -3.62  (seconds)                    DEFLEC18
 HV6062  HORZ ORDER      -  THIRD
 HV6062
 HV6062.The horizontal coordinates were established by classical geodetic methods
 HV6062.and adjusted by the National Geodetic Survey in January 1992.
 HV6062
 HV6062.The orthometric height was scaled from a topographic map.
 HV6062
 HV6062.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6062.GEOID18 height accuracy estimate available here.
 HV6062
 HV6062.Click photographs - Photos may exist for this station.
 HV6062
 HV6062.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6062
 HV6062. The following values were computed from the NAD 83(1991) position.
 HV6062
 HV6062;                    North         East     Units Scale Factor Converg.
 HV6062;SPC MD       -   112,212.589   475,842.929   MT  0.99995600   +0 32 49.3
 HV6062;SPC MD       -   368,150.80  1,561,161.34   sFT  0.99995600   +0 32 49.3
 HV6062;UTM  18      - 4,281,237.671   401,840.990   MT  0.99971865   -0 42 18.7
 HV6062
 HV6062!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6062!SPC MD       -   1.00000518  x   0.99995600  =   0.99996118
 HV6062!UTM  18      -   1.00000518  x   0.99971865  =   0.99972382
 HV6062
 HV6062:                Primary Azimuth Mark                     Grid Az
 HV6062:SPC MD       -  POTATO                                   077 28 18.2
 HV6062:UTM  18      -  POTATO                                   078 43 26.2
 HV6062
 HV6062_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0184081237(NAD 83)
 HV6062
 HV6062|---------------------------------------------------------------------|
 HV6062| PID    Reference Object                     Distance      Geod. Az  |
 HV6062|                                                           dddmmss.s |
 HV6062| HV5840 POTATO                              442.806 METERS 0780107.5 |
 HV6062| HV6061 HEALEY                              368.149 METERS 15541     |
 HV6062|---------------------------------------------------------------------|
 HV6062
 HV6062                          SUPERSEDED SURVEY CONTROL
 HV6062
 HV6062  NAD 83(1986)-  38 40 27.45361(N)    076 07 42.30111(W) AD(       ) 3
 HV6062  NAD 27      -  38 40 27.02100(N)    076 07 43.51700(W) AD(       ) 3
 HV6062  USSD        -  38 40 27.41500(N)    076 07 43.32600(W) AD(       ) 3
 HV6062
 HV6062.Superseded values are not recommended for survey control.
 HV6062
 HV6062.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6062.See file dsdata.pdf to determine how the superseded data were derived.
 HV6062
 HV6062_MARKER: H = DRILL HOLE
 HV6062_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6062_PROJECTION: PROJECTING 10 CENTIMETERS
 HV6062_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6062
 HV6062  HISTORY     - Date     Condition        Report By
 HV6062  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6062  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6062
 HV6062                          STATION DESCRIPTION
 HV6062
 HV6062'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6062'ON THE NORTHERN SHORE OF ISLAND CREEK, ABOUT 2 MILES FROM CHOPTANK
 HV6062'RIVER, IN SW CORNER OF A TRUCK GARDEN, ABOUT 6 FEET ABOVE HIGH
 HV6062'WATER, 6 YARDS N OF EDGE OF BANK, 25 YARDS W OF TOP OF BANK NEAR
 HV6062'LOCUST TREE, AND 3 YARDS E OF EDGE OF A 12-FOOT HOLE 6 FEET DEEP.
 HV6062'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6062'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6062'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE LETTERS
 HV6062'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE
 HV6062'MARK IS THE CENTER OF A 2-INCH TILE PIPE BURIED WITH THE TOP 2
 HV6062'INCHES BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO
 HV6062'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 HV6062'12-INCH CHERRY TREE, 4.17 METERS (13.68 FEET), S 10 DEG 21 MIN W.
 HV6062'RIGHT CORNER OF CHIMNEY ON QUARTER HOUSE, 1/2 MILE, S 23 DEG 28
 HV6062'MIN W.  NEAR PEAK OF LARGE BARN, 5/8 MILE, N 68 DEG 57 MIN W.
 HV6062'NAIL IN BLAZE IN 5-INCH LOCUST TREE, 4.82 METERS (15.81 FEET), N
 HV6062'65 DEG 32 MIN W.  LEFT CORNER OF BARN, 100 YARDS, N 16 DEG 45
 HV6062'MIN W.  NAIL IN BLAZE IN 4-INCH LOCUST TREE, 12.97 METERS (42.6
 HV6062'FEET), S 78 DEG 36 MIN E.  NAIL IN BLAZE IN 4-INCH LOCUST TREE,
 HV6062'9.19 METERS (30.15 FEET), S 69 DEG 30 MIN E.  NEAR PEAK OF SMALL
 HV6062'BUILDING, 3/4 MILE, S 48 DEG 41 MIN E.
 HV6062
 HV6062                          STATION RECOVERY (1940)
 HV6062
 HV6062'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6062'STATION VISITED BUT NOT RECOVERED.  LOCATED IN SE CORNER OF TRUCK
 HV6062'GARDEN, NOT AS DESCRIBED, IN SW.  LARGE HOLE MENTIONED IS STILL
 HV6062'PRESENT BUT 12-INCH CHERRY TREE IS GONE AND NEARBY BARN HAS BURNED
 HV6062'DOWN.  MARK HAS NOT BEEN SEEN ALTHOUGH EDGE OF FIELD HAS BEEN
 HV6062'CLEARED SEVERAL TIMES.  IT IS NOW OVERGROWN AGAIN BUT THERE IS A
 HV6062'POSSIBILITY OF RECOVERING SUBSURFACE MARK BY DIGGING. MONUMENT HAS
 HV6062'BEEN PLOWED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7055 ***********************************************************************
 HV7055  DESIGNATION -  CHARLES
 HV7055  PID         -  HV7055
 HV7055  STATE/COUNTY-  MD/CHARLES
 HV7055  COUNTRY     -  US
 HV7055  USGS QUAD   -  ROCK POINT (2016)
 HV7055
 HV7055                         *CURRENT SURVEY CONTROL
 HV7055  ______________________________________________________________________
 HV7055* NAD 83(1993) POSITION- 38 17 20.37966(N) 076 50 23.80073(W)   ADJUSTED
 HV7055* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7055  ______________________________________________________________________
 HV7055  GEOID HEIGHT    -        -33.685 (meters)                     GEOID18
 HV7055  LAPLACE CORR    -         -1.11  (seconds)                    DEFLEC18
 HV7055  HORZ ORDER      -  THIRD
 HV7055
 HV7055.The horizontal coordinates were established by classical geodetic methods
 HV7055.and adjusted by the National Geodetic Survey in November 1994.
 HV7055
 HV7055.The orthometric height was scaled from a topographic map.
 HV7055
 HV7055.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7055.GEOID18 height accuracy estimate available here.
 HV7055
 HV7055.Click photographs - Photos may exist for this station.
 HV7055
 HV7055.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7055
 HV7055. The following values were computed from the NAD 83(1993) position.
 HV7055
 HV7055;                    North         East     Units Scale Factor Converg.
 HV7055;SPC MD       -    69,093.479   414,002.728   MT  1.00000193   +0 06 01.6
 HV7055;SPC MD       -   226,684.19  1,358,273.95   sFT  1.00000193   +0 06 01.6
 HV7055;UTM  18      - 4,239,481.579   339,087.290   MT  0.99991889   -1 08 25.2
 HV7055
 HV7055!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7055!SPC MD       -   1.00000533  x   1.00000193  =   1.00000726
 HV7055!UTM  18      -   1.00000533  x   0.99991889  =   0.99992422
 HV7055
 HV7055:                Primary Azimuth Mark                     Grid Az
 HV7055:SPC MD       -  HARD 1908                                162 15 49.6
 HV7055:UTM  18      -  HARD 1908                                163 30 16.4
 HV7055
 HV7055_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3908739481(NAD 83)
 HV7055
 HV7055|---------------------------------------------------------------------|
 HV7055| PID    Reference Object                     Distance      Geod. Az  |
 HV7055|                                                           dddmmss.s |
 HV7055| HV7065 BUSHWOOD SACRED HEART CH SPIRE      APPROX. 4.4 KM 0702517.6 |
 HV7055| HV7050 HARD 1908                           APPROX. 1.8 KM 1622151.2 |
 HV7055| CX2211 CHARLES RM                           15.560 METERS 30050     |
 HV7055|---------------------------------------------------------------------|
 HV7055
 HV7055                          SUPERSEDED SURVEY CONTROL
 HV7055
 HV7055  NAD 83(1991)-  38 17 20.37892(N)    076 50 23.80581(W) AD(       ) 3
 HV7055  NAD 83(1986)-  38 17 20.37962(N)    076 50 23.81646(W) AD(       ) 3
 HV7055  NAD 27      -  38 17 19.88200(N)    076 50 24.89800(W) AD(       ) 3
 HV7055  USSD        -  38 17 20.55400(N)    076 50 24.98400(W) AD(       ) 3
 HV7055
 HV7055.Superseded values are not recommended for survey control.
 HV7055
 HV7055.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7055.See file dsdata.pdf to determine how the superseded data were derived.
 HV7055
 HV7055_MARKER: H = DRILL HOLE
 HV7055_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7055
 HV7055  HISTORY     - Date     Condition        Report By
 HV7055  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7055  HISTORY     - 1933     MARK NOT FOUND   CGS
 HV7055
 HV7055                          STATION DESCRIPTION
 HV7055
 HV7055'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7055'ON THE WESTERN SHORE OF WICOMICO RIVER, ON FIRST POINT S OF
 HV7055'ENTRANCE TO CHARLESTON CREEK, AND 1 MILE N OF ROCK POINT, ON A
 HV7055'SMALL MARSHY POINT, ABOUT 6 INCHES ABOVE HIGH WATER, AND 18 YARDS
 HV7055'E OF PINE WOODS ON A BANK 10 FEET ABOVE HIGH WATER.  STATION MARK
 HV7055'IS NAIL IN STUB WITH TOP 2 INCHES ABOVE GROUND.  REFERENCE MARK IS
 HV7055'CENTER OF STANDARD MONUMENT OF MARYLAND SHELL FISH SURVEY, WHICH
 HV7055'IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE AT THE
 HV7055'TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND SHOWS A
 HV7055'CENTER HOLE SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK LETTERS
 HV7055'M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE LETTERS U.S.C.S.
 HV7055'UNDERNEATH THE BASE OF THE TRIANGLE.  THE CENTER HOLE IS ALWAYS AT
 HV7055'THE CENTER OF THE MONUMENT AND IF THE MARKING HAS BEEN BROKEN OFF
 HV7055'WITHOUT DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE SECTION MAY
 HV7055'BE USED AS THE LOCATION OF THE REFERENCE MARK.  THE MONUMENT IS
 HV7055'SET VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5
 HV7055'INCHES ABOVE THE SURFACE.  IT IS 15.56 METERS (51.0 FEET) FROM THE
 HV7055'STATION N 59 DEG 10 MIN W.  DISTANCES AND BEARINGS OF OTHER
 HV7055'POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 10-INCH PINE
 HV7055'TREE, 28.46 METERS (93.4 FEET), S 30 DEG 13 MIN W.  NAIL IN BLAZE
 HV7055'IN 12-INCH PINE TREE, 16.66 METERS (54.7 FEET), S 67 DEG 20 MIN W.
 HV7055'NAIL IN BLAZE IN 7-INCH PINE TREE, 16.87 METERS (55.3 FEET), N 63
 HV7055'DEG 16 MIN W.  W CHIMNEY ON 2-STORY HOUSE, 1-1/4 MILES, N 68 DEG
 HV7055'15 MIN E.  W CHIMNEY ON GARNERS HOUSE, 1-3/4 MILES, S 83 DEG 47
 HV7055'MIN E.  W GABLE OF HOUSE ON BUSHWOOD WHARF, 2 MILES, S 77 DEG 31
 HV7055'MIN E.
 HV7055
 HV7055                          STATION RECOVERY (1933)
 HV7055
 HV7055'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (HEC)
 HV7055'STATION LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7944 ***********************************************************************
 DH7944  DESIGNATION -  CHARLES ADAMS
 DH7944  PID         -  DH7944
 DH7944  STATE/COUNTY-  MD/SOMERSET
 DH7944  COUNTRY     -  US
 DH7944  USGS QUAD   -  CRISFIELD (2016)
 DH7944
 DH7944                         *CURRENT SURVEY CONTROL
 DH7944  ______________________________________________________________________
 DH7944* NAD 83(2011) POSITION- 37 58 58.15964(N) 075 50 40.91357(W)   ADJUSTED
 DH7944* NAD 83(2011) ELLIP HT-   -35.039 (meters)        (02/16/16)   ADJUSTED
 DH7944* NAD 83(2011) EPOCH   -  2010.00
 DH7944* NAVD 88 ORTHO HEIGHT -     1.064 (meters)        3.49  (feet) ADJUSTED
 DH7944  ______________________________________________________________________
 DH7944  GEOID HEIGHT    -        -36.098 (meters)                     GEOID18
 DH7944  NAD 83(2011) X  -  1,230,965.970 (meters)                     COMP
 DH7944  NAD 83(2011) Y  - -4,880,738.015 (meters)                     COMP
 DH7944  NAD 83(2011) Z  -  3,903,919.743 (meters)                     COMP
 DH7944  LAPLACE CORR    -         -1.54  (seconds)                    DEFLEC18
 DH7944  DYNAMIC HEIGHT  -          1.063 (meters)        3.49  (feet) COMP
 DH7944  MODELED GRAVITY -    979,971.9   (mgal)                       NAVD 88
 DH7944
 DH7944  VERT ORDER      -  SECOND    CLASS I
 DH7944
 DH7944  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH7944  Standards:
 DH7944         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH7944            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH7944  -------------------------------------------------------------------
 DH7944  NETWORK    0.50   1.23           0.22   0.19   0.63     -0.01320487
 DH7944  -------------------------------------------------------------------
 DH7944  Click here for local accuracies and other accuracy information.
 DH7944
 DH7944.The horizontal coordinates were established by GPS observations
 DH7944.and adjusted by the ARCHER-SHEE LAND SURVEYING in February 2016.
 DH7944
 DH7944.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH7944.been affixed to the stable North American tectonic plate. See 
 DH7944.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH7944
 DH7944.The horizontal coordinates are valid at the epoch date displayed above
 DH7944.which is a decimal equivalence of Year/Month/Day.
 DH7944
 DH7944.The orthometric height was determined by differential leveling and
 DH7944.adjusted by the NATIONAL GEODETIC SURVEY
 DH7944.in February 2006.
 DH7944
 DH7944.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7944.GEOID18 height accuracy estimate available here.
 DH7944
 DH7944.Click photographs - Photos may exist for this station.
 DH7944
 DH7944.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH7944
 DH7944.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH7944
 DH7944.The ellipsoidal height was determined by GPS observations
 DH7944.and is referenced to NAD 83.
 DH7944
 DH7944.The dynamic height is computed by dividing the NAVD 88
 DH7944.geopotential number by the normal gravity value computed on the
 DH7944.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7944.degrees latitude (g = 980.6199 gals.).
 DH7944
 DH7944.The modeled gravity was interpolated from observed gravity values.
 DH7944
 DH7944. The following values were computed from the NAD 83(2011) position.
 DH7944
 DH7944;                    North         East     Units Scale Factor Converg.
 DH7944;SPC MD       -    35,737.512   501,501.090   MT  1.00007030   +0 43 30.4
 DH7944;SPC MD       -   117,248.82  1,645,341.49   sFT  1.00007030   +0 43 30.4
 DH7944;UTM  18      - 4,204,245.636   425,819.799   MT  0.99966777   -0 31 11.5
 DH7944
 DH7944!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH7944!SPC MD       -   1.00000550  x   1.00007030  =   1.00007580
 DH7944!UTM  18      -   1.00000550  x   0.99966777  =   0.99967327
 DH7944
 DH7944_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2581904245(NAD 83)
 DH7944
 DH7944                          SUPERSEDED SURVEY CONTROL
 DH7944
 DH7944.No superseded survey control is available for this station.
 DH7944
 DH7944_MARKER: F = FLANGE-ENCASED ROD
 DH7944_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DH7944_STAMPING: CHARLES ADAMS 2005
 DH7944_MARK LOGO: NGS
 DH7944_PROJECTION: RECESSED 3 CENTIMETERS
 DH7944_MAGNETIC: N = NO MAGNETIC MATERIAL
 DH7944_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH7944_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7944+SATELLITE: SATELLITE OBSERVATIONS - September 27, 2021
 DH7944_ROD/PIPE-DEPTH: 21.0 meters
 DH7944_SLEEVE-DEPTH  : 0.9 meters
 DH7944
 DH7944  HISTORY     - Date     Condition        Report By
 DH7944  HISTORY     - 2005     MONUMENTED       NGS
 DH7944  HISTORY     - 20150514 GOOD             ARCSHE
 DH7944  HISTORY     - 20210927 SEE DESCRIPTION  PROFLN
 DH7944
 DH7944                          STATION DESCRIPTION
 DH7944
 DH7944'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DH7944'THE STATION IS LOCATED ABOUT 5.7 MI SW OF MARION, 2.5 MI SW OF
 DH7944'HOPEWELL AND 0.5 MI E OF CRISFIELD. ALSO 0.1 MI (0.16 KM) NORTH ALONG
 DH7944'SOMERSET AVENUE FROM THE INTERSECTION OF SOMERSET AVENUE AND MAIN
 DH7944'STREET IN CRISFIELD.
 DH7944'TO REACH THE STATION FROM THE JUNCTION OF MARYLAND AVENUE, RICHERSON
 DH7944'AVENUE, JACKSONVILLE ROAD, AND SOMERSET AVENUE, LOCATED NEAR THE NORTH
 DH7944'CITY WATER TANK, GO 0.55 MI (0.89 KM) SOUTH ALONG SOMERSET AVENUE TO A
 DH7944'CEMETERY AT THE INTERSECTION OF SOMERSET AND CHESAPEAKE AVENUES, AT
 DH7944'THE SOUTH CORNER, A ROD DRIVEN 69.0 FT (21.0 M) WITH A 3.0 FT (0.9 M)
 DH7944'SLEEVE, ACCESS IS HAD THROUGH A NGS LOG CAP.
 DH7944'27.5 FT (8.4 M) SOUTHWEST OF THE CENTERLINE OF SOMERSET AVENUE, 22.5
 DH7944'FT (6.9 M) NORTHEAST OF THE CENTERLINE OF CHESAPEAKE AVENUE, 27.4 FT
 DH7944'(8.4 M) SOUTH-SOUTHEAST OF A WHITE HEAD STONE WITH THE NAME SIDNEY
 DH7944'O.LANDON, JR ENGRAVED ON THE HEAD STONE, 1.7 FT (0.5 M) NORTHWEST OF A
 DH7944'BRICK WALL, 1.5 FT (0.5 M) NORTH OF A SQUARE BRICK COLUMN FOR THE
 DH7944'BRICK WALL AROUND CEMEMTERY, AND 1.2 FT (0.4 M) NORTH OF A NGS
 DH7944'CARSONITE WITNESS POST.
 DH7944
 DH7944                          STATION RECOVERY (2015)
 DH7944
 DH7944'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 DH7944'RECOVERED IN GOOD CONDITION.
 DH7944
 DH7944                          STATION RECOVERY (2021)
 DH7944
 DH7944'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 DH7944'THE LOGO CAP WAS LEFT AS FOUND, COVERED BY A CHUNK OF THE BRICK WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6431 ***********************************************************************
 HV6431  DESIGNATION -  CHARLES MSFC 1910
 HV6431  PID         -  HV6431
 HV6431  STATE/COUNTY-  MD/DORCHESTER
 HV6431  COUNTRY     -  US
 HV6431  USGS QUAD   -  HONGA (2016)
 HV6431
 HV6431                         *CURRENT SURVEY CONTROL
 HV6431  ______________________________________________________________________
 HV6431* NAD 83(1991) POSITION- 38 18 54.93390(N) 076 09 53.07732(W)   ADJUSTED
 HV6431* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6431  ______________________________________________________________________
 HV6431  GEOID HEIGHT    -        -35.303 (meters)                     GEOID18
 HV6431  LAPLACE CORR    -         -3.68  (seconds)                    DEFLEC18
 HV6431  HORZ ORDER      -  THIRD
 HV6431
 HV6431.The horizontal coordinates were established by classical geodetic methods
 HV6431.and adjusted by the National Geodetic Survey in January 1992.
 HV6431
 HV6431.The orthometric height was scaled from a topographic map.
 HV6431
 HV6431.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6431.GEOID18 height accuracy estimate available here.
 HV6431
 HV6431.Click photographs - Photos may exist for this station.
 HV6431
 HV6431.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6431
 HV6431. The following values were computed from the NAD 83(1991) position.
 HV6431
 HV6431;                    North         East     Units Scale Factor Converg.
 HV6431;SPC MD       -    72,330.858   473,046.230   MT  0.99999738   +0 31 27.2
 HV6431;SPC MD       -   237,305.49  1,551,985.84   sFT  0.99999738   +0 31 27.2
 HV6431;UTM  18      - 4,241,436.365   398,176.305   MT  0.99972769   -0 43 19.9
 HV6431
 HV6431!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6431!SPC MD       -   1.00000542  x   0.99999738  =   1.00000280
 HV6431!UTM  18      -   1.00000542  x   0.99972769  =   0.99973311
 HV6431
 HV6431:                Primary Azimuth Mark                     Grid Az
 HV6431:SPC MD       -  LAKES                                    108 34 18.4
 HV6431:UTM  18      -  LAKES                                    109 49 05.5
 HV6431
 HV6431_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9817641436(NAD 83)
 HV6431
 HV6431|---------------------------------------------------------------------|
 HV6431| PID    Reference Object                     Distance      Geod. Az  |
 HV6431|                                                           dddmmss.s |
 HV6431| HV6430 LAKES                               APPROX. 1.7 KM 1090545.6 |
 HV6431|---------------------------------------------------------------------|
 HV6431
 HV6431                          SUPERSEDED SURVEY CONTROL
 HV6431
 HV6431  NAD 83(1986)-  38 18 54.93315(N)    076 09 53.09477(W) AD(       ) 3
 HV6431  NAD 27      -  38 18 54.49500(N)    076 09 54.31100(W) AD(       ) 3
 HV6431  USSD        -  38 18 54.88700(N)    076 09 54.04900(W) AD(       ) 3
 HV6431
 HV6431.Superseded values are not recommended for survey control.
 HV6431
 HV6431.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6431.See file dsdata.pdf to determine how the superseded data were derived.
 HV6431
 HV6431_MARKER: H = DRILL HOLE
 HV6431_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6431_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6431+STABILITY: SURFACE MOTION
 HV6431
 HV6431  HISTORY     - Date     Condition        Report By
 HV6431  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6431  HISTORY     - 1932     GOOD             CGS
 HV6431  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6431  HISTORY     - 1961     POOR             CGS
 HV6431  HISTORY     - 1975     GOOD             MDDNR
 HV6431  HISTORY     - 1981     GOOD             MDDNR
 HV6431
 HV6431                          STATION DESCRIPTION
 HV6431
 HV6431'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6431'STATION IS ON THE NORTHEASTERN SHORE OF HONGA RIVER, ABOUT 1-3/4
 HV6431'MILES N OF BENTLEY POINT, AND 2-1/2 MILES E-NE OF DRAWBRIDGE AT
 HV6431'FERRY POINT, ON FIRM LAND ABOUT 1 FOOT ABOVE HIGH WATER, 20 YARDS
 HV6431'E-SE OF SHORE, 30 YARDS NW OF SHORE, 50 YARDS N-NE OF SHORE, AND 40
 HV6431'YARDS SW BY S OF LARGE TREE NEAR BEND IN RAIL FENCE.  STATION MARK
 HV6431'IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV6431'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6431'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV6431'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6431'
 HV6431'SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH TOP
 HV6431'2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6431'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CENTER OF DRAW OF
 HV6431'HOOPER ISLAND BRIDGE, 2-1/2 MILES, S 62 DEG 16 MIN W.  LEFT EDGE OF
 HV6431'DRAW TENDERS CABIN, 2-1/2 MILES, S 63 DEG 53 MIN W.  CHIMNEY ON RIGHT
 HV6431'END OF HOUSE, 3 MILES, S 84 DEG 01 MIN W.  LEFT PEAK OF OYSTER
 HV6431'HOUSE, 3 1/4 MILES, N 88
 HV6431'DEG 36 MIN W.  CHIMNEY ON LEFT END OF HOUSE, 1-1/2 MILE,
 HV6431'N 84 DEG 47 MIN W.  CHIMNEY ON END OF HOUSE, 1-3/4 MILES, N 80 DEG 49
 HV6431'MIN W.  NAIL IN BLAZE IN 6-INCH TREE, 19.93 METERS (65.4 FEET),
 HV6431'N 71 DEG 28 MIN E.
 HV6431'NAIL IN BLAZE IN 6-INCH TREE, 12.63 METERS (41.4 FEET), N 01
 HV6431'DEG 54 MIN W.  LEFT EDGE OF BARN ROOF, 2-1/4 MILES, S 37 DEG 43 MIN E.
 HV6431
 HV6431                          STATION RECOVERY (1932)
 HV6431
 HV6431'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HV6431'STATION FOUND AS DESCRIBED.  DESCRIPTION IS ADEQUATE.  A PINE WOODS
 HV6431'STANDS CLOSE BY IN A N-NORTHEASTERLY DIRECTION FROM THE STATION.
 HV6431
 HV6431                          STATION RECOVERY (1942)
 HV6431
 HV6431'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WPD)
 HV6431'THIS STATION WAS SEARCHED FOR THOROUGHLY FOR ONE HOUR BY TWO MEN, BUT
 HV6431'NO TRACE OF IT COULD BE FOUND.  IT IS RECOMMENDED THAT THIS STATION
 HV6431'BE CLASSIFIED AS LOST.
 HV6431
 HV6431                          STATION RECOVERY (1961)
 HV6431
 HV6431'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6431'THIS STATION WAS PREVIOUSLY REPORTED AS LOST.  STATION SURFACE MARK
 HV6431'WAS RECOVERED LEANING SLIGHTLY TO THE SOUTH.  THE PUBLISHED
 HV6431'DESCRIPTION IS ADEQUATE WITH THE FOLLOWING EXCEPTIONS--THE RAIL
 HV6431'FENCE AND WITNESS TREES HAVE BEEN DESTROYED.  STATION IS ABOUT 100
 HV6431'FT.  NORTHEASTERLY OF THE POINT AT THE EDGE OF GROUND THAT IS
 HV6431'SLIGHTLY HIGHER THAN THE MARSH POINT AND ON THE EDGE OF THE PINE
 HV6431'THICKET.
 HV6431
 HV6431                          STATION RECOVERY (1975)
 HV6431
 HV6431'RECOVERY NOTE BY MD DEPT OF NAT RES 1975 (GEH)
 HV6431'STATION RECOVERED IN GOOD CONDITION--REVISED DESCRIPTION FOLLOWS--
 HV6431'
 HV6431'MONUMENT IS 18.5 FEET SW OF BLAZED 12 INCH PINE TREE, 28 FEET NW OF
 HV6431'12 INCH PINE TREE AT SHARP BEND IN SHORELINE, 25 FEET E OF 8 INCH
 HV6431'PINE TREE AND 95 FEET E OF POINT, 44 FEET S OF 10 INCH PINE AND 65
 HV6431'FEET S OF SHORELINE.  WITNESS POST 1 FOOT W OF STATION.
 HV6431
 HV6431                          STATION RECOVERY (1981)
 HV6431
 HV6431'RECOVERY NOTE BY MD DEPT OF NAT RES 1981 (LW)
 HV6431'MSFC-USCS RECOVERED EXCELLENT.
 HV6431'
 HV6431'DISTANCE AND DIRECTION FROM NEAREST TOWN--2 MI W. OF CRAPO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3920 ***********************************************************************
 JU3920  DESIGNATION -  CHARLESTOWN CHIMNEY
 JU3920  PID         -  JU3920
 JU3920  STATE/COUNTY-  MD/CECIL
 JU3920  COUNTRY     -  US
 JU3920  USGS QUAD   -  NORTH EAST (2016)
 JU3920
 JU3920                         *CURRENT SURVEY CONTROL
 JU3920  ______________________________________________________________________
 JU3920* NAD 83(1991) POSITION- 39 34 30.03242(N) 075 58 21.31874(W)   ADJUSTED
 JU3920  ______________________________________________________________________
 JU3920  GEOID HEIGHT    -        -33.203 (meters)                     GEOID18
 JU3920  LAPLACE CORR    -         -0.72  (seconds)                    DEFLEC18
 JU3920  HORZ ORDER      -  THIRD
 JU3920
 JU3920.The horizontal coordinates were established by classical geodetic methods
 JU3920.and adjusted by the National Geodetic Survey in January 1992.
 JU3920
 JU3920.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3920.GEOID18 height accuracy estimate available here.
 JU3920
 JU3920.Click photographs - Photos may exist for this station.
 JU3920
 JU3920.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3920
 JU3920. The following values were computed from the NAD 83(1991) position.
 JU3920
 JU3920;                    North         East     Units Scale Factor Converg.
 JU3920;SPC MD       -   212,339.741   488,276.387   MT  1.00002426   +0 38 41.4
 JU3920;SPC MD       -   696,651.30  1,601,953.45   sFT  1.00002426   +0 38 41.4
 JU3920;UTM  18      - 4,381,040.816   416,466.987   MT  0.99968591   -0 37 10.8
 JU3920
 JU3920_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1646681040(NAD 83)
 JU3920
 JU3920                          SUPERSEDED SURVEY CONTROL
 JU3920
 JU3920  NAD 83(1986)-  39 34 30.02625(N)    075 58 21.32437(W) AD(       ) 3
 JU3920  NAD 27      -  39 34 29.63000(N)    075 58 22.51100(W) AD(       ) 3
 JU3920
 JU3920.Superseded values are not recommended for survey control.
 JU3920
 JU3920.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3920.See file dsdata.pdf to determine how the superseded data were derived.
 JU3920
 JU3920_MARKER: 85 = CHIMNEY
 JU3920_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3920+SATELLITE: SATELLITE OBSERVATIONS - March 25, 2004
 JU3920
 JU3920  HISTORY     - Date     Condition        Report By
 JU3920  HISTORY     - 1937     FIRST OBSERVED   CGS
 JU3920  HISTORY     - 1983     GOOD             USPSQD
 JU3920  HISTORY     - 1983     GOOD             LOCENG
 JU3920  HISTORY     - 20040325 GOOD             USPSQD
 JU3920
 JU3920                          STATION DESCRIPTION
 JU3920
 JU3920'DESCRIBED BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU3920'THE EASTERLY CHIMNEY ON A PROMINENT, GRAY, SLATE-ROOFED HOUSE IN
 JU3920'CHARLESTOWN.  IT IS LOCATED AT CARLYNE AND CALVERT STREETS, ON A
 JU3920'HILL OVERLOOKING THE RIVER.  THE PROPERTY IS OWNED BY
 JU3920'MRS. CATHERINE MC KOWAN.
 JU3920'
 JU3920'THIS IS AN INTERSECTION STATION OBSERVED ON FROM THREE MAIN
 JU3920'SCHEME STATIONS.
 JU3920
 JU3920                          STATION RECOVERY (1983)
 JU3920
 JU3920'RECOVERY NOTE BY US POWER SQUADRON 1983 (HAW)
 JU3920'STATION RECOVERED GOOD.
 JU3920'
 JU3920'EXISTING STATION DESCRIPTION ADEQUATE EXCEPT FOR FOLLOWING
 JU3920'CORRECTIONS--
 JU3920'1. HOUSE IS WHITE NOT GRAY.
 JU3920'2. LOCATION IS CALVERT AND CAROLINE (NOT CARLYNE) STREETS.
 JU3920'3. OWNER IS MRS. MILLICENT (LEE MCKOWAN) VACKSON.
 JU3920
 JU3920                          STATION RECOVERY (1983)
 JU3920
 JU3920'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (GSW)
 JU3920'NEW POSTAL ADDRESS FOR HOUSE IS--208 CARELINE STREET, CHARLESTOWN,
 JU3920'MD.  RED BRICK CHIMNEY IS IN GOOD CONDITION.
 JU3920'
 JU3920'JANUARY 29, 1983 AT 1523.
 JU3920
 JU3920                          STATION RECOVERY (2004)
 JU3920
 JU3920'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLG)
 JU3920'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7036 ***********************************************************************
 HV7036  DESIGNATION -  CHARLOTTE HALL
 HV7036  PID         -  HV7036
 HV7036  STATE/COUNTY-  MD/ST MARYS
 HV7036  COUNTRY     -  US
 HV7036  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV7036
 HV7036                         *CURRENT SURVEY CONTROL
 HV7036  ______________________________________________________________________
 HV7036* NAD 83(1993) POSITION- 38 28 34.96197(N) 076 46 47.34018(W)   ADJUSTED
 HV7036* NAVD 88 ORTHO HEIGHT -    52.    (meters)      171.    (feet) SCALED
 HV7036  ______________________________________________________________________
 HV7036  GEOID HEIGHT    -        -33.561 (meters)                     GEOID18
 HV7036  LAPLACE CORR    -         -2.73  (seconds)                    DEFLEC18
 HV7036  HORZ ORDER      -  FIRST
 HV7036
 HV7036.The horizontal coordinates were established by classical geodetic methods
 HV7036.and adjusted by the National Geodetic Survey in November 1994.
 HV7036
 HV7036.The orthometric height was scaled from a topographic map.
 HV7036
 HV7036.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7036.GEOID18 height accuracy estimate available here.
 HV7036
 HV7036.Click photographs - Photos may exist for this station.
 HV7036
 HV7036.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7036
 HV7036. The following values were computed from the NAD 83(1993) position.
 HV7036
 HV7036;                    North         East     Units Scale Factor Converg.
 HV7036;SPC MD       -    89,904.426   419,212.950   MT  0.99997400   +0 08 17.5
 HV7036;SPC MD       -   294,961.44  1,375,367.82   sFT  0.99997400   +0 08 17.5
 HV7036;UTM  18      - 4,260,172.932   344,747.398   MT  0.99989684   -1 06 27.4
 HV7036
 HV7036!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7036!SPC MD       -   0.99999715  x   0.99997400  =   0.99997115
 HV7036!UTM  18      -   0.99999715  x   0.99989684  =   0.99989399
 HV7036
 HV7036:                Primary Azimuth Mark                     Grid Az
 HV7036:SPC MD       -  CHARLOTTE HALL AZ MK                     349 33 22.9
 HV7036:UTM  18      -  CHARLOTTE HALL AZ MK                     350 48 07.8
 HV7036
 HV7036_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4474760172(NAD 83)
 HV7036
 HV7036|---------------------------------------------------------------------|
 HV7036| PID    Reference Object                     Distance      Geod. Az  |
 HV7036|                                                           dddmmss.s |
 HV7036| CX2213 CHARLOTTE HALL RM 1                  39.447 METERS 13517     |
 HV7036| CX2214 CHARLOTTE HALL RM 2                  49.231 METERS 22210     |
 HV7036| HV7038 WASHINGTON NORFOLK AWY BCN 11       APPROX. 7.8 KM 2442857.0 |
 HV7036| HV7035 NEW MARKET CHARLOTTE HALL TANK      173.913 METERS 34500     |
 HV7036| CX2212 CHARLOTTE HALL AZ MK                               3494140.4 |
 HV7036|---------------------------------------------------------------------|
 HV7036
 HV7036                          SUPERSEDED SURVEY CONTROL
 HV7036
 HV7036  NAD 83(1991)-  38 28 34.96169(N)    076 46 47.34282(W) AD(       ) 1
 HV7036  NAD 83(1986)-  38 28 34.96152(N)    076 46 47.35544(W) AD(       ) 1
 HV7036  NAD 27      -  38 28 34.51728(N)    076 46 48.47629(W) AD(       ) 1
 HV7036
 HV7036.Superseded values are not recommended for survey control.
 HV7036
 HV7036.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7036.See file dsdata.pdf to determine how the superseded data were derived.
 HV7036
 HV7036_MARKER: DS = TRIANGULATION STATION DISK
 HV7036_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7036_STAMPING: CHARLOTTE HALL 1942
 HV7036_MARK LOGO: CGS
 HV7036_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7036+STABILITY: SURFACE MOTION
 HV7036
 HV7036  HISTORY     - Date     Condition        Report By
 HV7036  HISTORY     - 1942     MONUMENTED       CGS
 HV7036  HISTORY     - 1943     GOOD             CGS
 HV7036  HISTORY     - 1975     SEE DESCRIPTION  NGS
 HV7036
 HV7036                          STATION DESCRIPTION
 HV7036
 HV7036'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV7036'THE STATION IS LOCATED ON THE GROUNDS OF THE CHARLOTTE HALL
 HV7036'MILITARY ACADEMY, WHICH IS ON STATE HIGHWAY 5 ABOUT 1/2 MILE
 HV7036'NORTH OF NEWMARKET.  IT IS ABOUT 30 FEET SOUTH OF THE SOUTH END
 HV7036'ZONE OF THE FOOTBALL FIELD AND ABOUT 40 FEET SOUTHWEST OF THE MOST
 HV7036'WESTERN OF THE TWO SOUTH GOAL POSTS.  IT IS SET FLUSH WITH THE
 HV7036'GROUND, AND IS STAMPED CHARLOTTE HALL 1942.
 HV7036'
 HV7036'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 HV7036'DISKS SET IN CONCRETE AS DESCRIBED.
 HV7036'
 HV7036'REFERENCE MARK NO. 1 IS SOUTHEAST OF THE STATION AT THE EDGE OF
 HV7036'THE WOODS.  IT PROJECTS ABOUT 6 INCHES AND IS STAMPED CHARLOTTE
 HV7036'HALL NO. 1 1942.
 HV7036'
 HV7036'REFERENCE MARK NO. 2 IS SOUTHWEST OF THE STATION, UNDER A POWER
 HV7036'LINE AND 55 FEET EAST OF A SMALL BUILDING.  IT PROJECTS ABOUT 6
 HV7036'INCHES, AND IS STAMPED CHARLOTTE HALL NO. 2 1942.
 HV7036'
 HV7036'THE AZIMUTH MARK IS LOCATED ABOUT 1/2 MILE NORTH OF THE STATION
 HV7036'ALONG SIDE THE BARNLOT FENCE OF THE W.C. CHISLER FARM.  IT IS 1
 HV7036'FOOT EAST OF THE FENCE AND 23 FEET SOUTH OF THE SOUTHEAST CORNER
 HV7036'OF THE BARN. TO REACH THE AZIMUTH MARK FROM THE ACADEMY ENTRANCE
 HV7036'GO NORTH ON STATE HIGHWAY 5 FOR 0.35 MILE TO A CURVE TO THE RIGHT.
 HV7036'LEAVE THE HIGHWAY, TURN LEFT ACROSS THE RAILROAD TRACKS, THEN
 HV7036'RIGHT AND GO ABOUT 0.05 MILE.  THEN TAKE THE LEFT FORK TOWARDS THE
 HV7036'BARN AND GO ABOUT 0.1 MILE TO THE BARN AND THE AZIMUTH MARK AS
 HV7036'DESCRIBED.
 HV7036'
 HV7036'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT LAUREL 1934.
 HV7036'
 HV7036'A 90-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT OWENS.
 HV7036'
 HV7036'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT RYCEVILLE.
 HV7036'
 HV7036'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WHEATLEY.
 HV7036'
 HV7036'HEIGHT OF LIGHT ABOVE STATION MARK - 34 METERS.
 HV7036
 HV7036                          STATION RECOVERY (1943)
 HV7036
 HV7036'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7036'THE STATION AND ALL MARKS WERE RECOVERED AS DESCRIBED AND IN GOOD
 HV7036'CONDITION.  DESCRIPTION ADEQUATE.
 HV7036'
 HV7036'A 103-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT ROBERTS.
 HV7036'
 HV7036'A 103-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT CURTIS.
 HV7036'
 HV7036'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DOWELL.
 HV7036
 HV7036                          STATION RECOVERY (1975)
 HV7036
 HV7036'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HV7036'NO OTHER OBJECTS V.G.
 HV7036'
 HV7036'THE STATION SURFACE MONUMENT WAS FOUND DESTROYED.  THE SUB-SURFACE
 HV7036'DISK WAS FOUND IN GOOD CONDITION.  A NEW SURFACE DISK SET AT THIS
 HV7036'DATE.  REFERENCE MARKS ONE AND TWO WERE RECOVERED AND FOUND IN
 HV7036'GOOD CONDITION.  A SEARCH WAS MADE FOR THE AZIMUTH MARK AND NO
 HV7036'EVIDENCE OF IT COULD BE FOUND.  ITS EXACT LOCATION COULD NOT BE
 HV7036'DETERMINED DUE TO OBSTRUCTIONS BETWEEN THE STATION AND THE AZIMUTH
 HV7036'MARK.  A SHORTER DISTANCE OF 0.07 FOOT OR .021 METER WAS NOTED TO
 HV7036'REFERENCE MARK ONE.  A DIFFERENCE OF 5 MINUTES IN DIRECTION WAS
 HV7036'ALSO NOTED TO REFERENCE MARK ONE.  THE 1943 DISTANCES APPEARED TO
 HV7036'HAVE BEEN SLOPE MEASUREMENTS.  THE SLOPE DISTANCE TO REFERENCE
 HV7036'MARK TWO CHECKED THE 1943 SLOPE DISTANCE.  THE DIRECTION BETWEEN
 HV7036'THE CHARLOTTE HALL WATER TANK AND REFERENCE MARK TWO AGREED WITH
 HV7036'THE 1943 OBSERVATION.
 HV7036'
 HV7036'A COMPLETE NEW DESCRIPTION FOLLOWS.
 HV7036'
 HV7036'THE STATION IS LOCATED IN THE SOUTH EDGE OF CHARLOTTE HALL
 HV7036'MILITARY ACADEMY ABOUT 1/2 MILE NORTH OF NEW MARKET, 1/2 MILE
 HV7036'SOUTH OF CHARLOTTE HALL, 1/4 MILE WEST OF STATE HIGHWAY 5, AND 222
 HV7036'FEET WEST-SOUTHWEST OF THE SOUTHEAST CORNER OF THE MOST SOUTHERLY
 HV7036'BUILDING ON THE ACADEMY GROUNDS.
 HV7036'
 HV7036'NO TO REACH NECESSARY FOR THIS STATION, THE LOCATION IS ADEQUATE.
 HV7036'
 HV7036'THE STATION SURFACE DISK IS STAMPED CHARLOTTE HALL 1942 1975, SET
 HV7036'IN THE TOP OF A 14-INCH ROUND CONCRETE MONUMENT 6-INCHES BELOW THE
 HV7036'SURFACE.  THE SUB-SURFACE DISK IS STAMPED CHARLOTTE HALL 1942,
 HV7036'SET IN A MASS OF CONCRETE 3 FEET BELOW THE SURFACE.  THEY ARE
 HV7036'222.03 FEET WEST-SOUTHWEST OF THE SOUTHEAST CORNER OF THE MOST
 HV7036'SOUTHERLY BUILDING, 42.3 FEET NORTH-NORTHEAST OF A NAIL WITH CUP
 HV7036'IN A 12-INCH PINE TREE, 23 FEET SOUTH OF THE CENTER OF A EAST-WEST
 HV7036'ROAD, 17 FEET SOUTHEAST OF A LONE 6-INCH PINE TREE AND 10 FEET
 HV7036'SOUTHEAST OF A WITNESS POST.
 HV7036'
 HV7036'REFERENCE MARK 1 IS A STANDARD DISK STAMPED CHARLOTTE HALL NO 1
 HV7036'1942, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH
 HV7036'IS 1-INCH BELOW THE SURFACE.  IT IS 139 FEET SOUTHEAST OF THE
 HV7036'WITNESS POST AND 125 FEET SOUTH OF THE CENTER OF THE DIRT ROAD.
 HV7036'
 HV7036'REFERENCE MARK 2 IS A STANDARD DISK STAMPED CHARLOTTE HALL NO 2
 HV7036'1942, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT
 HV7036'PROJECTING 3 INCHES.  IT IS DIRECTLY BELOW A POWERLINE, 162 FEET
 HV7036'SOUTHWEST OF THE WITNESS POST AND 150 FEET SOUTH OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6357 ***********************************************************************
 HV6357  DESIGNATION -  CHASE
 HV6357  PID         -  HV6357
 HV6357  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6357  COUNTRY     -  US
 HV6357  USGS QUAD   -  ANNAPOLIS (2016)
 HV6357
 HV6357                         *CURRENT SURVEY CONTROL
 HV6357  ______________________________________________________________________
 HV6357* NAD 83(1991) POSITION- 38 59 45.19734(N) 076 26 11.74841(W)   ADJUSTED
 HV6357* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6357  ______________________________________________________________________
 HV6357  GEOID HEIGHT    -        -33.408 (meters)                     GEOID18
 HV6357  LAPLACE CORR    -         -2.73  (seconds)                    DEFLEC18
 HV6357  HORZ ORDER      -  THIRD
 HV6357
 HV6357.The horizontal coordinates were established by classical geodetic methods
 HV6357.and adjusted by the National Geodetic Survey in January 1992.
 HV6357
 HV6357.The orthometric height was scaled from a topographic map.
 HV6357
 HV6357.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6357.GEOID18 height accuracy estimate available here.
 HV6357
 HV6357.Click photographs - Photos may exist for this station.
 HV6357
 HV6357.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6357
 HV6357. The following values were computed from the NAD 83(1991) position.
 HV6357
 HV6357;                    North         East     Units Scale Factor Converg.
 HV6357;SPC MD       -   147,700.358   448,805.769   MT  0.99995204   +0 21 13.0
 HV6357;SPC MD       -   484,580.26  1,472,456.93   sFT  0.99995204   +0 21 13.0
 HV6357;UTM  18      - 4,317,301.837   375,592.623   MT  0.99979058   -0 54 14.8
 HV6357
 HV6357!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6357!SPC MD       -   1.00000512  x   0.99995204  =   0.99995716
 HV6357!UTM  18      -   1.00000512  x   0.99979058  =   0.99979570
 HV6357
 HV6357:                Primary Azimuth Mark                     Grid Az
 HV6357:SPC MD       -  HACKETT                                  129 31 29.3
 HV6357:UTM  18      -  HACKETT                                  130 46 57.1
 HV6357
 HV6357_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7559217301(NAD 83)
 HV6357
 HV6357|---------------------------------------------------------------------|
 HV6357| PID    Reference Object                     Distance      Geod. Az  |
 HV6357|                                                           dddmmss.s |
 HV6357| CX2220 CHASE RM                              8.870 METERS 03749     |
 HV6357| HV6364 HACKETT                             APPROX. 1.6 KM 1295242.3 |
 HV6357|---------------------------------------------------------------------|
 HV6357
 HV6357                          SUPERSEDED SURVEY CONTROL
 HV6357
 HV6357  NAD 83(1986)-  38 59 45.19324(N)    076 26 11.75982(W) AD(       ) 3
 HV6357  NAD 27      -  38 59 44.79300(N)    076 26 12.92700(W) AD(       ) 3
 HV6357  USSD        -  38 59 45.15700(N)    076 26 12.74100(W) AD(       ) 3
 HV6357
 HV6357.Superseded values are not recommended for survey control.
 HV6357
 HV6357.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6357.See file dsdata.pdf to determine how the superseded data were derived.
 HV6357
 HV6357_MARKER: N = NAIL
 HV6357_SETTING: 0 = UNSPECIFIED SETTING
 HV6357
 HV6357  HISTORY     - Date     Condition        Report By
 HV6357  HISTORY     - 1906     MONUMENTED       MDSFC
 HV6357  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6357
 HV6357                          STATION DESCRIPTION
 HV6357
 HV6357'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV6357'ON THE W SHORE OF WHITEHALL BAY, ON POINT BETWEEN MILL AND
 HV6357'WHITEHALL CREEKS, ABOUT 3/4 MILE NW OF HACKETT POINT AND 1/2
 HV6357'MILE W BY S OF WHITEHALL WHARF, IN A YOUNG PEACH ORCHARD, ABOUT
 HV6357'30 FEET FROM EDGE OF BANK ABOUT 18 FEET HIGH.  STATION MARK IS
 HV6357'NAIL IN STUB FLUSH WITH GROUND.  REFERENCE MARK IS MARKED BY
 HV6357'A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6357'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV6357'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6357'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 8.87 METERS
 HV6357'(29.10 FEET) FROM STATION N 37 DEG 49 MIN E.
 HV6357'DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV6357'REFERENCE ARE AS FOLLOWS--LONE TREE (2 FEET IN DIAMETER), 300
 HV6357'YARDS, N 2 DEG 49 MIN W.  CENTER OF WHITEHALL WHARF HOUSE, 3/4
 HV6357'MILE, N 77 DEG 11 MIN E.  W CHIMNEY OF RED ROOF HOUSE ON
 HV6357'OPPOSITE SHORE, 3/4 MILE, S 67 DEG 48 MIN E.  W EDGE OF SMALL
 HV6357'SHANTY ON BEACH ON OPPOSITE SHORE, 1/2 MILE, S 55 DEG 20 MIN E.
 HV6357
 HV6357                          STATION RECOVERY (1932)
 HV6357
 HV6357'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6357'STATION MARK LOST BY EROSION OF THE BANK.  THE AREA IN WHICH THE
 HV6357'REFERENCE MARK WAS LOCATED HAS BEEN EXCAVATED TO A DEPTH OF
 HV6357'SEVERAL FEET IN LEVELING OFF A LAWN AND FILLING IN BACK OF A
 HV6357'CONCRETE SEA WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5781 ***********************************************************************
 JV5781  DESIGNATION -  CHASE
 JV5781  PID         -  JV5781
 JV5781  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5781  COUNTRY     -  US
 JV5781  USGS QUAD   -  ROUND BAY (2016)
 JV5781
 JV5781                         *CURRENT SURVEY CONTROL
 JV5781  ______________________________________________________________________
 JV5781* NAD 83(1991) POSITION- 39 01 10.26254(N) 076 31 09.86482(W)   ADJUSTED
 JV5781* NAVD 88 ORTHO HEIGHT -    18.    (meters)       59.    (feet) SCALED
 JV5781  ______________________________________________________________________
 JV5781  GEOID HEIGHT    -        -33.221 (meters)                     GEOID18
 JV5781  LAPLACE CORR    -         -3.97  (seconds)                    DEFLEC18
 JV5781  HORZ ORDER      -  THIRD
 JV5781
 JV5781.The horizontal coordinates were established by classical geodetic methods
 JV5781.and adjusted by the National Geodetic Survey in January 1992.
 JV5781
 JV5781.The orthometric height was scaled from a topographic map.
 JV5781
 JV5781.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5781.GEOID18 height accuracy estimate available here.
 JV5781
 JV5781.Click photographs - Photos may exist for this station.
 JV5781
 JV5781.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5781
 JV5781. The following values were computed from the NAD 83(1991) position.
 JV5781
 JV5781;                    North         East     Units Scale Factor Converg.
 JV5781;SPC MD       -   150,282.391   441,618.463   MT  0.99995298   +0 18 05.9
 JV5781;SPC MD       -   493,051.48  1,448,876.57   sFT  0.99995298   +0 18 05.9
 JV5781;UTM  18      - 4,320,040.633   368,464.815   MT  0.99981304   -0 57 24.2
 JV5781
 JV5781!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5781!SPC MD       -   1.00000243  x   0.99995298  =   0.99995541
 JV5781!UTM  18      -   1.00000243  x   0.99981304  =   0.99981547
 JV5781
 JV5781:                Primary Azimuth Mark                     Grid Az
 JV5781:SPC MD       -  COOL                                     132 04 33.4
 JV5781:UTM  18      -  COOL                                     133 20 03.5
 JV5781
 JV5781_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6846420040(NAD 83)
 JV5781
 JV5781|---------------------------------------------------------------------|
 JV5781| PID    Reference Object                     Distance      Geod. Az  |
 JV5781|                                                           dddmmss.s |
 JV5781| CB1068 CHASE RM                              7.050 METERS 01354     |
 JV5781| JV5787 COOL                                APPROX. 0.8 KM 1322239.3 |
 JV5781|---------------------------------------------------------------------|
 JV5781
 JV5781                          SUPERSEDED SURVEY CONTROL
 JV5781
 JV5781  NAD 83(1986)-  39 01 10.25887(N)    076 31 09.87587(W) AD(       ) 3
 JV5781  NAD 27      -  39 01 09.85900(N)    076 31 11.01400(W) AD(       ) 3
 JV5781  USSD        -  39 01 10.21300(N)    076 31 10.85800(W) AD(       ) 3
 JV5781
 JV5781.Superseded values are not recommended for survey control.
 JV5781
 JV5781.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5781.See file dsdata.pdf to determine how the superseded data were derived.
 JV5781
 JV5781
 JV5781  HISTORY     - Date     Condition        Report By
 JV5781  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5781  HISTORY     - 1906     GOOD             CGS
 JV5781  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5781
 JV5781                          STATION DESCRIPTION
 JV5781
 JV5781'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5781'ON THE NE SHORE OF SEVERN RIVER, ON LOW, MARSHY POINT AT NW
 JV5781'SIDE OF ENTRANCE TO CHASE CREEK, 2 FEET ABOVE AND 18 FEET BACK
 JV5781'FROM HIGH-WATER MARK, AND 25 YARDS SW OF FOOT OF BLUFF 50 FEET
 JV5781'HIGH.  STATION MARK IS NAIL IN TOP OF A PINE STUB WITH TOP 2
 JV5781'INCHES BELOW SURFACE OF GROUND.  THE STUB IS INSIDE A 4-INCH
 JV5781'TILE PIPE SET WITH TOP 1 FOOT BELOW SURFACE OF GROUND.
 JV5781'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5781'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5781'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 JV5781'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 JV5781'TOP OF POST.  IT IS 7.05 METERS (23.13 FEET) FROM STATION
 JV5781'N 13 DEG 53 MIN E.  DISTANCES AND BEARINGS FROM THE
 JV5781'STATION OF OTHER POINTS OF REFERENCE ARE AS FOLLOWS--MIDDLE
 JV5781'WINDOW OF YELLOW HOUSE OPPOSITE STATION, 1/4 MILE, S 29 DEG 24
 JV5781'MIN W.  N CHIMNEY OF RED ROOF HOUSE ON OPPOSITE SHORE, 1/2
 JV5781'MILE, S 54 DEG 26 MIN W.  CHIMNEY ON YELLOW HOUSE ON OPPOSITE
 JV5781'SHORE, 1/2 MILE, N 81 DEG 12 MIN W.  N CHIMNEY OF WHITE HOUSE, 1
 JV5781'MILE, N 78 DEG 56 MIN E.  CHIMNEY ON YELLOW HOUSE ON OPPOSITE
 JV5781'SHORE, 1/2 MILE, S 16 DEG 54 MIN E.  CHIMNEY ON SMALL SHANTY
 JV5781'ON OPPOSITE SHORE, 1/2 MILE, S 9 DEG 37 MIN E.
 JV5781
 JV5781                          STATION RECOVERY (1961)
 JV5781
 JV5781'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5781'STATION WAS SEARCHED FOR BUT NOT FOUND.  MUCH OF THE MARSH IS NOW
 JV5781'COVERED BY WATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6736 ***********************************************************************
 HV6736  DESIGNATION -  CHASE 2
 HV6736  PID         -  HV6736
 HV6736  STATE/COUNTY-  MD/ST MARYS
 HV6736  COUNTRY     -  US
 HV6736  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6736
 HV6736                         *CURRENT SURVEY CONTROL
 HV6736  ______________________________________________________________________
 HV6736* NAD 83(1991) POSITION- 38 17 11.98407(N) 076 28 39.40758(W)   ADJUSTED
 HV6736* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 HV6736  ______________________________________________________________________
 HV6736  GEOID HEIGHT    -        -34.389 (meters)                     GEOID18
 HV6736  LAPLACE CORR    -         -5.64  (seconds)                    DEFLEC18
 HV6736  HORZ ORDER      -  SECOND
 HV6736
 HV6736.The horizontal coordinates were established by classical geodetic methods
 HV6736.and adjusted by the National Geodetic Survey in January 1992.
 HV6736
 HV6736.The orthometric height was scaled from a topographic map.
 HV6736
 HV6736.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6736.GEOID18 height accuracy estimate available here.
 HV6736
 HV6736.Click photographs - Photos may exist for this station.
 HV6736
 HV6736.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6736
 HV6736. The following values were computed from the NAD 83(1991) position.
 HV6736
 HV6736;                    North         East     Units Scale Factor Converg.
 HV6736;SPC MD       -    68,953.100   445,703.195   MT  1.00000235   +0 19 40.3
 HV6736;SPC MD       -   226,223.63  1,462,277.90   sFT  1.00000235   +0 19 40.3
 HV6736;UTM  18      - 4,238,654.153   370,772.767   MT  0.99980566   -0 54 56.3
 HV6736
 HV6736!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6736!SPC MD       -   1.00000010  x   1.00000235  =   1.00000245
 HV6736!UTM  18      -   1.00000010  x   0.99980566  =   0.99980576
 HV6736
 HV6736:                Primary Azimuth Mark                     Grid Az
 HV6736:SPC MD       -  CHASE AZ MK 2                            130 42 29.5
 HV6736:UTM  18      -  CHASE AZ MK 2                            131 57 06.1
 HV6736
 HV6736_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7077238654(NAD 83)
 HV6736
 HV6736|---------------------------------------------------------------------|
 HV6736| PID    Reference Object                     Distance      Geod. Az  |
 HV6736|                                                           dddmmss.s |
 HV6736| CX2218 CHASE RM 3                           36.223 METERS 01245     |
 HV6736| HV6735 CHASE AZ MK 2                       APPROX. 0.8 KM 1310209.8 |
 HV6736| HV6682 CHASE RESET                           6.418 METERS 19530     |
 HV6736| CX2219 CHASE RM 4                            9.936 METERS 27556     |
 HV6736|---------------------------------------------------------------------|
 HV6736
 HV6736                          SUPERSEDED SURVEY CONTROL
 HV6736
 HV6736  NAD 83(1986)-  38 17 11.98463(N)    076 28 39.42205(W) AD(       ) 2
 HV6736  NAD 27      -  38 17 11.53658(N)    076 28 40.59341(W) AD(       ) 2
 HV6736
 HV6736.Superseded values are not recommended for survey control.
 HV6736
 HV6736.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6736.See file dsdata.pdf to determine how the superseded data were derived.
 HV6736
 HV6736_MARKER: DH = HORIZONTAL CONTROL DISK
 HV6736_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6736_STAMPING: CHASE 2 1977
 HV6736_MARK LOGO: NGS
 HV6736_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6736+STABILITY: SURFACE MOTION
 HV6736
 HV6736  HISTORY     - Date     Condition        Report By
 HV6736  HISTORY     - 1977     MONUMENTED       NGS
 HV6736
 HV6736                          STATION DESCRIPTION
 HV6736
 HV6736'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HV6736'NO OTHER OBJECTS V.G.
 HV6736'
 HV6736'THE STATION IS LOCATED 19 MILES NORTHWEST OF POINT LOOKOUT,
 HV6736'2-3/4 MILES NORTHWEST OF LEXINGTON PARK, 1-1/4 MILES SOUTHEAST
 HV6736'OF CALIFORNIA AND ON ROAD RIGHT-OF-WAY.
 HV6736'
 HV6736'TO REACH FROM THE POST OFFICE IN CALIFORNIA, GO SOUTHEAST ON STATE
 HV6736'HIGHWAY 235 FOR 1.2 MILE TO RUE PURCHASE ROAD AND THE STATION
 HV6736'IN THE SOUTHEAST ANGLE OF THE INTERSECTION.
 HV6736'
 HV6736'THE STATION SURFACE DISK IS STAMPED CHASE 2 1977, SET IN THE
 HV6736'TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS 1-INCH.
 HV6736'THE SUB-SURFACE DISK IS STAMPED CHASE 2 1977 SET IN THE TOP OF
 HV6736'A 8-INCH MASS OF CONCRETE WHICH IS 3-1/2 FEET BELOW THE SURFACE.
 HV6736'THEY ARE 124 FEET WEST OF THE WEST CORNER OF THE WAREHOUSE, 68
 HV6736'FEET SOUTHEAST OF THE CENTER OF RUE PURCHASE ROAD, 43 FEET
 HV6736'NORTHEAST OF THE CENTER OF THE NORTHBOUND LANE OF STATE HIGHWAY
 HV6736'235, 33.5 FEET SOUTHEAST OF A POWERLINE POLE NUMBERED 51, AND
 HV6736'3 FEET SOUTHEAST OF A WITNESS POST.
 HV6736'
 HV6736'REFERENCE MARK THREE IS A STANDARD DISK STAMPED CHASE 1942 NO 3
 HV6736'1973 SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 HV6736'PROJECTS 3 INCHES.  IT IS 150 FEET NORTHEAST OF THE CENTER OF THE
 HV6736'NORTHBOUND LANE OF STATE HIGHWAY 235, 117 FEET NORTH-NORTHEAST
 HV6736'OF THE WITNESS POST, 108 FEET EAST-NORTHEAST OF THE POWERLINE
 HV6736'POLE NUMBERED 51, 26 FEET SOUTHWEST OF THE CENTER OF RUE
 HV6736'PURCHASE ROAD, AND 4.5 FEET SOUTH OF THE POWERLINE POLE NUMBERED
 HV6736'30-1/2.
 HV6736'
 HV6736'REFERENCE MARK 4 IS A STANDARD DISK STAMPED CHASE 1942 NO 4
 HV6736'1977 CEMENTED IN A DRILL HOLE IN THE CURB ALONG THE NORTHEAST SIDE
 HV6736'OF STATE HIGHWAY 235 WHICH PROJECTS 8-INCHES.  IT IS 60 FEET
 HV6736'SOUTHEAST OF THE CENTER OF RUE PURCHASE ROAD, 31 FEET WEST OF THE
 HV6736'WITNESS POST, 25 FEET NORTHEAST OF THE CENTER OF THE NORTHBOUND
 HV6736'LANE OF STATE HIGHWAY 235, AND 19 FEET SOUTHEAST OF THE
 HV6736'POWERLINE POLE NUMBERED 51.
 HV6736'
 HV6736'THE AZIMUTH MARK IS A STANDARD DISK STAMPED CHASE 1977 CEMENTED IN
 HV6736'A DRILL HOLE IN A CURB WHICH PROJECTS 8-INCHES.  IT IS 59.8
 HV6736'FEET SOUTHEAST OF A POWERLINE POLE NUMBERED 2, 32.6 FEET SOUTHEAST
 HV6736'OF THE NORTHEAST ENTRANCE TO A CHURCH, 22 FEET SOUTHWEST OF THE
 HV6736'CENTER OF THE SOUTHBOUND LANE OF STATE HIGHWAY 235, AND 17.2 FEET
 HV6736'NORTHWEST OF THE SOUTHEAST END OF THE CURB.
 HV6736'
 HV6736'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTHEAST ON STATE
 HV6736'HIGHWAY 235 FOR 0.5 MILE TO A CHURCH ON THE RIGHT AND THE MARK
 HV6736'ON THE RIGHT.
 HV6736'
 HV6736'STATION CHASE 1942 STILL REMAINS IN POSITION UNDER THE ROAD, SEE
 HV6736'DESCRIPTION THEREOF.
 HV6736'
 HV6736'NEAREST TOWN--CALIFORNIA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6735 ***********************************************************************
 HV6735  DESIGNATION -  CHASE AZ MK 2
 HV6735  PID         -  HV6735
 HV6735  STATE/COUNTY-  MD/ST MARYS
 HV6735  COUNTRY     -  US
 HV6735  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6735
 HV6735                         *CURRENT SURVEY CONTROL
 HV6735  ______________________________________________________________________
 HV6735* NAD 83(1991) POSITION- 38 16 54.82907(N) 076 28 14.40395(W)   ADJUSTED
 HV6735* NAVD 88 ORTHO HEIGHT -    33.    (meters)      108.    (feet) SCALED
 HV6735  ______________________________________________________________________
 HV6735  GEOID HEIGHT    -        -34.419 (meters)                     GEOID18
 HV6735  LAPLACE CORR    -         -5.73  (seconds)                    DEFLEC18
 HV6735  HORZ ORDER      -  THIRD
 HV6735
 HV6735.The horizontal coordinates were established by classical geodetic methods
 HV6735.and adjusted by the National Geodetic Survey in January 1992.
 HV6735
 HV6735.The orthometric height was scaled from a topographic map.
 HV6735
 HV6735.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6735.GEOID18 height accuracy estimate available here.
 HV6735
 HV6735.Click photographs - Photos may exist for this station.
 HV6735
 HV6735.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6735
 HV6735. The following values were computed from the NAD 83(1991) position.
 HV6735
 HV6735;                    North         East     Units Scale Factor Converg.
 HV6735;SPC MD       -    68,427.654   446,313.907   MT  1.00000320   +0 19 56.0
 HV6735;SPC MD       -   224,499.73  1,464,281.54   sFT  1.00000320   +0 19 56.0
 HV6735;UTM  18      - 4,238,115.683   371,371.814   MT  0.99980376   -0 54 40.5
 HV6735
 HV6735!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6735!SPC MD       -   1.00000027  x   1.00000320  =   1.00000347
 HV6735!UTM  18      -   1.00000027  x   0.99980376  =   0.99980403
 HV6735
 HV6735:                Primary Azimuth Mark                     Grid Az
 HV6735:SPC MD       -  CHASE 2                                  310 42 29.3
 HV6735:UTM  18      -  CHASE 2                                  311 57 05.8
 HV6735
 HV6735_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7137138115(NAD 83)
 HV6735
 HV6735|---------------------------------------------------------------------|
 HV6735| PID    Reference Object                     Distance      Geod. Az  |
 HV6735|                                                           dddmmss.s |
 HV6735| HV6736 CHASE 2                             APPROX. 0.8 KM 3110225.3 |
 HV6735|---------------------------------------------------------------------|
 HV6735
 HV6735                          SUPERSEDED SURVEY CONTROL
 HV6735
 HV6735  NAD 83(1986)-  38 16 54.82944(N)    076 28 14.41856(W) AD(       ) 3
 HV6735  NAD 27      -  38 16 54.38080(N)    076 28 15.59112(W) AD(       ) 3
 HV6735
 HV6735.Superseded values are not recommended for survey control.
 HV6735
 HV6735.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6735.See file dsdata.pdf to determine how the superseded data were derived.
 HV6735
 HV6735_MARKER: DZ = AZIMUTH MARK DISK
 HV6735_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV6735_SP_SET: CURB
 HV6735_STAMPING: CHASE 1977
 HV6735_MARK LOGO: NGS
 HV6735_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6735
 HV6735  HISTORY     - Date     Condition        Report By
 HV6735  HISTORY     - 1977     MONUMENTED       NGS
 HV6735
 HV6735                          STATION DESCRIPTION
 HV6735
 HV6735'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HV6735'THE STATION IS LOCATED 19 MILES NORTHWEST OF POINT LOOKOUT, 2-3/4
 HV6735'MILES NORTHWEST OF LEXINGTON PARK, 1-1/4 MILES SOUTHEAST OF
 HV6735'CALIFORNIA AND ON ROAD RIGHT-OF-WAY.
 HV6735'
 HV6735'TO REACH CHASE 2 FROM THE POST OFFICE IN CALIFORNIA, GO SOUTHEAST ON
 HV6735'STATE HIGHWAY 235 FOR 1.2 MILE TO RUE PURCHASE ROAD AND THE STATION IN
 HV6735'THE SOUTHEAST ANGLE OF THE INTERSECTION.
 HV6735'
 HV6735'THE STATION MARK IS A STANDARD DISK STAMPED CHASE 1977 CEMENTED IN
 HV6735'A DRILL HOLE IN A CURB WHICH PROJECTS 8-INCHES.  IT IS 59.8
 HV6735'FEET SOUTHEAST OF A POWERLINE POLE NUMBERED 2, 32.6 FEET SOUTHEAST
 HV6735'OF THE NORTHEAST ENTRANCE TO A CHURCH, 22 FEET SOUTHWEST OF THE
 HV6735'CENTER OF THE SOUTHBOUND LANE OF STATE HIGHWAY 235, AND 17.2 FEET
 HV6735'NORTHWEST OF THE SOUTHEAST END OF THE CURB.
 HV6735'
 HV6735'TO REACH THE STATION MARK FROM CHASE 2 , GO SOUTHEAST ON STATE
 HV6735'HIGHWAY 235 FOR 0.5 MILE TO A CHURCH ON THE RIGHT AND THE MARK ON
 HV6735'THE RIGHT.
 HV6735'
 HV6735'NEAREST TOWN--CALIFORNIA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6682 ***********************************************************************
 HV6682  DESIGNATION -  CHASE RESET
 HV6682  PID         -  HV6682
 HV6682  STATE/COUNTY-  MD/ST MARYS
 HV6682  COUNTRY     -  US
 HV6682  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6682
 HV6682                         *CURRENT SURVEY CONTROL
 HV6682  ______________________________________________________________________
 HV6682* NAD 83(1991) POSITION- 38 17 11.78349(N) 076 28 39.47817(W)   ADJUSTED
 HV6682* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 HV6682  ______________________________________________________________________
 HV6682  GEOID HEIGHT    -        -34.389 (meters)                     GEOID18
 HV6682  LAPLACE CORR    -         -5.64  (seconds)                    DEFLEC18
 HV6682  HORZ ORDER      -  FIRST
 HV6682
 HV6682.The horizontal coordinates were established by classical geodetic methods
 HV6682.and adjusted by the National Geodetic Survey in January 1992.
 HV6682
 HV6682.The orthometric height was scaled from a topographic map.
 HV6682
 HV6682.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6682.GEOID18 height accuracy estimate available here.
 HV6682
 HV6682.Click photographs - Photos may exist for this station.
 HV6682
 HV6682.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6682
 HV6682. The following values were computed from the NAD 83(1991) position.
 HV6682
 HV6682;                    North         East     Units Scale Factor Converg.
 HV6682;SPC MD       -    68,946.906   445,701.515   MT  1.00000236   +0 19 40.3
 HV6682;SPC MD       -   226,203.31  1,462,272.39   sFT  1.00000236   +0 19 40.3
 HV6682;UTM  18      - 4,238,647.997   370,770.953   MT  0.99980567   -0 54 56.4
 HV6682
 HV6682!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6682!SPC MD       -   1.00000010  x   1.00000236  =   1.00000246
 HV6682!UTM  18      -   1.00000010  x   0.99980567  =   0.99980577
 HV6682
 HV6682:                Primary Azimuth Mark                     Grid Az
 HV6682:SPC MD       -  CHASE AZ MK 2                            130 17 41.7
 HV6682:UTM  18      -  CHASE AZ MK 2                            131 32 18.4
 HV6682
 HV6682_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7077038647(NAD 83)
 HV6682
 HV6682|---------------------------------------------------------------------|
 HV6682| PID    Reference Object                     Distance      Geod. Az  |
 HV6682|                                                           dddmmss.s |
 HV6682| CX2218 CHASE RM 3                           42.636 METERS 01310     |
 HV6682| HV6736 CHASE 2                               6.418 METERS 01530     |
 HV6682| HV6735 CHASE AZ MK 2                       APPROX. 0.8 KM 1303722.0 |
 HV6682| CX2215 CHASE AZ MK                                        1303849.8 |
 HV6682| CX2216 CHASE RM 1                           45.333 METERS 18305     |
 HV6682| CX2217 CHASE RM 2                           48.622 METERS 26055     |
 HV6682| CX2219 CHASE RM 4                           10.897 METERS 31128     |
 HV6682|---------------------------------------------------------------------|
 HV6682
 HV6682                          SUPERSEDED SURVEY CONTROL
 HV6682
 HV6682  NAD 83(1986)-  38 17 11.78384(N)    076 28 39.49271(W) AD(       ) 1
 HV6682  NAD 27      -  38 17 11.33600(N)    076 28 40.66400(W) AD(       ) 1
 HV6682
 HV6682.Superseded values are not recommended for survey control.
 HV6682
 HV6682.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6682.See file dsdata.pdf to determine how the superseded data were derived.
 HV6682
 HV6682_MARKER: DH = HORIZONTAL CONTROL DISK
 HV6682_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6682_STAMPING: CHASE 1942 1973
 HV6682_MARK LOGO: NGS
 HV6682_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6682+STABILITY: SURFACE MOTION
 HV6682
 HV6682  HISTORY     - Date     Condition        Report By
 HV6682  HISTORY     - 1942     MONUMENTED       CGS
 HV6682  HISTORY     - 1943     GOOD             CGS
 HV6682  HISTORY     - 1965     GOOD             CGS
 HV6682  HISTORY     - 1976     SEE DESCRIPTION  LOCENG
 HV6682  HISTORY     - 1977     SEE DESCRIPTION  NGS
 HV6682
 HV6682                          STATION DESCRIPTION
 HV6682
 HV6682'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6682'STATION IS ALONG THE E SIDE OF STATE HIGHWAY 235, 1.85 MILES BY
 HV6682'ROAD SE OF CALIFORNIA POST OFFICE, ON PROPERTY OWNED BY ESTELLE
 HV6682'CHASE.  IT IS IN A TRIANGLE FORMED BY STATE HIGHWAY 235,
 HV6682'AN OLD ROAD CUT, AND A DIRT ROAD, 65 FEET E OF HIGHWAY 235 AND
 HV6682'ABOUT 50 FEET N OF THE PROJECTED PLANE OF THE N WALL OF A WHITE
 HV6682'HOUSE ON THE OPPOSITE (W) SIDE OF THE HIGHWAY.
 HV6682'
 HV6682'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 HV6682'DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HV6682'
 HV6682'REFERENCE MARK NO.1 IS SW OF THE STATION AT THE SE CORNER OF THE
 HV6682'YARD FENCE.  IT PROJECTS 2 INCHES AND IS STAMPED CHASE NO.1 1942.
 HV6682'
 HV6682'REFERENCE MARK NO.2 IS NW OF THE STATION, 20 FEET W OF THE CENTER
 HV6682'OF HIGHWAY 235, AND AT THE NE CORNER OF THE YARD FENCE.  IT PROJECTS
 HV6682'ABOUT 6 INCHES AND IS STAMPED CHASE NO.2 1942.
 HV6682'
 HV6682'AZIMUTH MARK IS 0.35 MILE BY ROAD S OF THE STATION, ON THE W
 HV6682'SIDE OF STATE HIGHWAY 235, 100 YARDS S OF A CULVERT, AND 19 FEET
 HV6682'W OF THE CENTER OF THE HIGHWAY.  IT PROJECTS ABOUT 6 INCHES AND IS
 HV6682'STAMPED CHASE 1942.
 HV6682'
 HV6682'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT CEDAR POINT 2.
 HV6682'
 HV6682'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT COLLISON.
 HV6682'
 HV6682'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT A HEWITT.
 HV6682'
 HV6682'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT JACOBSON.
 HV6682'
 HV6682'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SPALDING.
 HV6682'
 HV6682'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT CALVERT.
 HV6682'
 HV6682'A 77-FOOT TOWER WILL SEE A 87-FOOT LIGHT AT BARREDA.
 HV6682'
 HV6682'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT REKAR.
 HV6682
 HV6682                          STATION RECOVERY (1943)
 HV6682
 HV6682'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6682'STATION WAS RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK
 HV6682'1, REFERENCE MARK 2, AND THE AZIMUTH MARK HAVE BEEN RESET BY THE
 HV6682'MARYLAND STATE ROADS COMMISSION.  THE TWO REFERENCE MARKS ARE IN
 HV6682'GOOD CONDITION IN THEIR NEW LOCATIONS, BUT THE AZIMUTH MARK COULD
 HV6682'NOT BE FOUND.  THE ORIGINAL DESCRIPTION IS ADEQUATE AND CORRECT
 HV6682'EXCEPT FOR THE TWO REFERENCE MARKS WHICH HAVE BEEN MOVED.
 HV6682'
 HV6682'NEW DESCRIPTION FOR REFERENCE MARKS FOLLOWS--
 HV6682'
 HV6682'REFERENCE MARK 1 IS SE OF THE STATION, 55.2 FEET SE OF THE SE
 HV6682'CORNER OF A HOUSE, 13 FEET S OF DRIVEWAY LEADING TO THE HOUSE,
 HV6682'AND 52 FEET W OF THE CENTER LINE OF THE HIGHWAY.  IT IS A BRONZE
 HV6682'REFERENCE DISK, STAMPED CHASE NO. 1 1942, AND PROJECTS ABOUT 6
 HV6682'INCHES ABOVE THE GROUND.
 HV6682'
 HV6682'REFERENCE MARK 2 IS NW OF THE STATION, AT THE EDGE OF THE WOODS,
 HV6682'AND 43 FEET W OF THE CENTER LINE OF THE HIGHWAY.  IT IS A BRONZE
 HV6682'REFERENCE DISK, STAMPED CHASE NO. 2 1942, AND PROJECTS ABOUT 6
 HV6682'INCHES ABOVE THE GROUND.
 HV6682'
 HV6682'THE TWO REFERENCE MARKS WERE MEASURED FROM THE STATION WITH THE
 HV6682'FOLLOWING RESULTS--
 HV6682'
 HV6682'R.M.1 45.316 METERS 148.68 FEET
 HV6682'
 HV6682'R.M. 2 48.652 METERS 159.63 FEET
 HV6682'
 HV6682'THE NEW LOCATION OF THE AZIMUTH MARK IS SUPPOSED TO BE
 HV6682'APPROXIMATELY 0.35 MILE FROM THE STATION.
 HV6682
 HV6682                          STATION RECOVERY (1965)
 HV6682
 HV6682'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (RTF)
 HV6682'STATION AND RM 1 FOUND IN GOOD CONDITION.
 HV6682'
 HV6682'RM 2 DESTROYED
 HV6682'
 HV6682'AZIMUTH MARK THOROUGHLY SEARCHED FOR BUT UNABLE TO LOCATE
 HV6682
 HV6682                          STATION RECOVERY (1976)
 HV6682
 HV6682'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1976 (JLD)
 HV6682'RECOVERED BY RBA INC.
 HV6682'
 HV6682'DESTROYED
 HV6682'
 HV6682'REFERENCE MARK NO 1 DESTROYED
 HV6682'
 HV6682'REFERENCE MARK NO 2 DESTROYED
 HV6682'
 HV6682'MONUMENT WAS FOUND IN SEVERAL PIECES AT SITE.  BRONZE DISC WAS
 HV6682'REMOVED.
 HV6682
 HV6682                          STATION RECOVERY (1977)
 HV6682
 HV6682'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HV6682'THE STATION SURFACE MARK WAS FOUND DESTROYED, THE SUB-SURFACE
 HV6682'DISK WAS FOUND IN GOOD CONDITION.  REFERENCE MARKS ONE AND TWO
 HV6682'WERE FOUND TO HAVE BEEN HIT BY LARGE MACHINERY AND THEY WERE
 HV6682'LEANING AND OUT OF POSITION.  THE AZIMUTH MARK WAS BELIEVED
 HV6682'DESTROYED BY ROAD CONSTRUCTION.  IT WAS REPORTED IN JUNE,
 HV6682'1973, THAT A NEW ROAD WAS TO BE CONSTRUCTED, AND IT WOULD
 HV6682'BE VERY NEAR THE STATION MARK, HOWEVER ONLY A 1-1/2 FOOT CUT
 HV6682'WAS TO BE MADE WHERE THE STATION WAS LOCATED.  IN JUNE, 1973,
 HV6682'THE STATION SUB-SURFACE DISK WAS LOWERED TO 48 INCHES BELOW THE
 HV6682'SURFACE AND IN THE EXACT LOCATION AS THE OLD POSITION OF THE
 HV6682'DISK.  ALSO, AT THAT TIME A NEW REFERENCE MARK 3 AND SEVERAL
 HV6682'TEMPORARY POINTS WERE SET SO THE STATION COULD BE LOCATED
 HV6682'AFTER THE CONSTRUCTION WAS COMPLETE.
 HV6682'
 HV6682'IN AUGUST, 1977, THE CONSTRUCTION OF THE NEW ROAD WAS FOUND NEARLY
 HV6682'COMPLETED.  THE STATION SUB-SURFACE DISK WAS FOUND 3 FEET UNDER
 HV6682'THE GROUND AND IN THE EDGE OF THE ROAD.  REFERENCE MARK THREE
 HV6682'WAS FOUND IN GOOD CONDITION ALONG WITH REFERENCE POINT A.  NO
 HV6682'OTHER OF THE REFERENCE POINTS WERE FOUND.  THE DIRECTION BETWEEN
 HV6682'REFERENCE MARK THREE AND POINT A WAS FOUND TO BE WITHIN CLOSE
 HV6682'AGREEMENT WITH THE 1973 OBSERVATION.  THE DISTANCE TO BOTH
 HV6682'OBJECTS AGREED WITH THE 1973 DISTANCES.
 HV6682'
 HV6682'DUE TO THE STATION BEING NEAR THE ROAD AND NOW PLANS SHOW FOR A
 HV6682'RUN-OFF RAMP BEING BUILT, A NEW STATION CHASE 2 WAS ESTABLISHED.
 HV6682'IT WAS NOT POSSIBLE TO DETERMINE A SAFE LOCATION IN 1973 TO
 HV6682'MOVE THE STATION.
 HV6682'
 HV6682'A COMPLETE NEW DESCRIPTION OF THIS STATION FOLLOWS.
 HV6682'
 HV6682'THE STATION IS LOCATED 19 MILES NORTHWEST OF POINT LOOKOUT, 2-3/4
 HV6682'MILES NORTHWEST OF LEXINGTON PARK, 1-1/4 MILES SOUTHEAST OF
 HV6682'CALIFORNIA AND ON ROAD RIGHT-OF-WAY.
 HV6682'
 HV6682'TO REACH FROM THE POST IN CALIFORNIA, GO SOUTHEAST ON STATE
 HV6682'HIGHWAY 235 FOR 1.25 MILES TO RUE PURCHASE ROAD ON THE LEFT AND
 HV6682'THE STATION IN THE SOUTHEAST ANGLE OF THE INTERSECTION.
 HV6682'
 HV6682'THE STATION MARK IS A STANDARD DISK STAMPED CHASE 1942 1973, SET IN
 HV6682'THE TOP OF A 10-INCH MASS OF CONCRETE WHICH IS 3 FEET BELOW THE
 HV6682'RUN-OFF RAMP FOR STATE HIGHWAY 235.  IT IS 135.5 FEET WEST OF THE
 HV6682'WEST CORNER OF A WAREHOUSE, 97 FEET SOUTHEAST OF THE CENTER OF
 HV6682'RUE PURCHASE ROAD, 46 FEET SOUTH-SOUTHEAST OF POWERLINE POLE
 HV6682'NUMBERED 51, 23 FEET NORTHEAST OF THE CENTER OF NORTHBOUND LANE
 HV6682'OF STATE HIGHWAY 235, 22.3 FEET SOUTH OF A WITNESS POST, AND 1.5
 HV6682'FEET SOUTHWEST OF THE NORTHEAST CURB OF STATE HIGHWAY 235.
 HV6682'
 HV6682'REFERENCE MARK THREE IS A STANDARD DISK STAMPED CHASE 1942 NO 3
 HV6682'1973 SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 HV6682'PROJECTS 3-INCHES.  IT IS 150 FEET NORTHEAST OF THE CENTER OF THE
 HV6682'NORTHBOUND LANE OF STATE HIGHWAY 235, 117 FEET NORTH-NORTHEAST
 HV6682'OF THE WITNESS POST, 108 FEET EAST-NORTHEAST OF THE POWERLINE
 HV6682'POLE NUMBERED 51, 26 FEET SOUTHWEST OF THE CENTER OF RUE PURCHASE
 HV6682'ROAD, AND 4.5 FEET SOUTH OF THE POWERLINE POLE NUMBERED
 HV6682'30-1/2.
 HV6682'
 HV6682'FOR ADDITIONAL INFORMATION, SEE THE DESCRIPTION FOR STATION
 HV6682'CHASE 2.
 HV6682'
 HV6682'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1-1/4 MILES
 HV6682'SOUTHEAST OF CALIFORNIA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5534 ***********************************************************************
 JV5534  DESIGNATION -  CHASE USE 1915
 JV5534  PID         -  JV5534
 JV5534  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5534  COUNTRY     -  US
 JV5534  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5534
 JV5534                         *CURRENT SURVEY CONTROL
 JV5534  ______________________________________________________________________
 JV5534* NAD 83(1991) POSITION- 39 16 43.82997(N) 076 35 43.05499(W)   ADJUSTED
 JV5534* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5534  ______________________________________________________________________
 JV5534  GEOID HEIGHT    -        -32.791 (meters)                     GEOID18
 JV5534  LAPLACE CORR    -         -4.98  (seconds)                    DEFLEC18
 JV5534  HORZ ORDER      -  THIRD
 JV5534
 JV5534.The horizontal coordinates were established by classical geodetic methods
 JV5534.and adjusted by the National Geodetic Survey in January 1992.
 JV5534
 JV5534.The orthometric height was scaled from a topographic map.
 JV5534
 JV5534.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5534.GEOID18 height accuracy estimate available here.
 JV5534
 JV5534.Click photographs - Photos may exist for this station.
 JV5534
 JV5534.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5534
 JV5534. The following values were computed from the NAD 83(1991) position.
 JV5534
 JV5534;                    North         East     Units Scale Factor Converg.
 JV5534;SPC MD       -   179,038.900   434,919.284   MT  0.99997454   +0 15 14.4
 JV5534;SPC MD       -   587,396.79  1,426,897.68   sFT  0.99997454   +0 15 14.4
 JV5534;UTM  18      - 4,348,933.609   362,401.046   MT  0.99983312   -1 00 36.5
 JV5534
 JV5534!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5534!SPC MD       -   1.00000503  x   0.99997454  =   0.99997957
 JV5534!UTM  18      -   1.00000503  x   0.99983312  =   0.99983814
 JV5534
 JV5534_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6240148933(NAD 83)
 JV5534
 JV5534|---------------------------------------------------------------------|
 JV5534| PID    Reference Object                     Distance      Geod. Az  |
 JV5534|                                                           dddmmss.s |
 JV5534| JV5535 TERMINAL                            173.466 METERS 03013     |
 JV5534| JV5539 CONSOL USE 1915                     370.728 METERS 13803     |
 JV5534|---------------------------------------------------------------------|
 JV5534
 JV5534                          SUPERSEDED SURVEY CONTROL
 JV5534
 JV5534  NAD 83(1986)-  39 16 43.82627(N)    076 35 43.06381(W) AD(       ) 3
 JV5534  NAD 27      -  39 16 43.43600(N)    076 35 44.17200(W) AD(       ) 3
 JV5534  USSD        -  39 16 43.80100(N)    076 35 44.01100(W) AD(       ) 3
 JV5534
 JV5534.Superseded values are not recommended for survey control.
 JV5534
 JV5534.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5534.See file dsdata.pdf to determine how the superseded data were derived.
 JV5534
 JV5534
 JV5534  HISTORY     - Date     Condition        Report By
 JV5534  HISTORY     - 1915     MONUMENTED       CGS
 JV5534  HISTORY     - 1924     GOOD             CGS
 JV5534  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV5534
 JV5534                          STATION DESCRIPTION
 JV5534
 JV5534'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5534'AT THE NORTHERLY SIDE OF BALTIMORE HARBOR, NEAR THE SOUTHEASTERLY
 JV5534'END OF A WHARF, 4.56 METERS (14.95 FEET) SOUTHWESTERLY FROM A
 JV5534'BOLT IN THE COPING AT THE EASTERLY CORNER OF THE WHARF, AND 4.18
 JV5534'METERS (13.7 FEET) NORTHEASTERLY FROM A BOLT AT THE SOUTHERLY
 JV5534'CORNER OF THE WHARF.  THE STATION IS MARKED BY A COPPER NAIL
 JV5534'SURROUNDED BY 6 WIRE NAILS.  THE REFERENCE MARK IS A CROSS CUT
 JV5534'IN A GRANITE FOUNDATION STONE, 68.827 METERS (225.81 FEET) FROM
 JV5534'THE STATION N 45 DEG 16 MIN W.
 JV5534
 JV5534                          STATION RECOVERY (1975)
 JV5534
 JV5534'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5534'SEARCHED FOR BUT NOT FOUND.  NO EVIDENCE OF THE COPPER NAIL OR
 JV5534'WIRE NAILS COULD BE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5953 ***********************************************************************
 JV5953  DESIGNATION -  CHATEAU
 JV5953  PID         -  JV5953
 JV5953  STATE/COUNTY-  MD/MONTGOMERY
 JV5953  COUNTRY     -  US
 JV5953  USGS QUAD   -  BELTSVILLE (2016)
 JV5953
 JV5953                         *CURRENT SURVEY CONTROL
 JV5953  ______________________________________________________________________
 JV5953* NAD 83(1991) POSITION- 39 01 00.41708(N) 076 58 28.53460(W)   ADJUSTED
 JV5953* NAVD 88 ORTHO HEIGHT -   145.8   (meters)      478.    (feet) VERTCON3
 JV5953  ______________________________________________________________________
 JV5953  GEOID HEIGHT    -        -32.040 (meters)                     GEOID18
 JV5953  LAPLACE CORR    -         -3.21  (seconds)                    DEFLEC18
 JV5953  HORZ ORDER      -  FIRST
 JV5953
 JV5953.The horizontal coordinates were established by classical geodetic methods
 JV5953.and adjusted by the National Geodetic Survey in January 1992.
 JV5953
 JV5953.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5953.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5953
 JV5953.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5953.GEOID18 height accuracy estimate available here.
 JV5953
 JV5953.Click photographs - Photos may exist for this station.
 JV5953
 JV5953.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5953
 JV5953. The following values were computed from the NAD 83(1991) position.
 JV5953
 JV5953;                    North         East     Units Scale Factor Converg.
 JV5953;SPC MD       -   149,869.548   402,200.298   MT  0.99995287   +0 00 57.4
 JV5953;SPC MD       -   491,697.01  1,319,552.14   sFT  0.99995287   +0 00 57.4
 JV5953;UTM  18      - 4,320,493.854   329,049.840   MT  0.99995986   -1 14 36.2
 JV5953
 JV5953!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5953!SPC MD       -   0.99998215  x   0.99995287  =   0.99993503
 JV5953!UTM  18      -   0.99998215  x   0.99995986  =   0.99994202
 JV5953
 JV5953:                Primary Azimuth Mark                     Grid Az
 JV5953:SPC MD       -  SILVER SPR WOODSIDE WSSC TANK            262 36 34.3
 JV5953:UTM  18      -  SILVER SPR WOODSIDE WSSC TANK            263 52 07.9
 JV5953
 JV5953_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2904920493(NAD 83)
 JV5953
 JV5953|---------------------------------------------------------------------|
 JV5953| PID    Reference Object                     Distance      Geod. Az  |
 JV5953|                                                           dddmmss.s |
 JV5953| CB1555 ELEVR SHAFT NE CORNER                              04012     |
 JV5953| CB1772 ELEVR SHAFT SE CORNER                              11955     |
 JV5953| HV7747 COLLEGE PARK UNIV METH CHURCH       APPROX. 4.1 KM 1504914.2 |
 JV5953| HV4485 SILVER SPR RAD STA WGAY FM MST      APPROX. 5.3 KM 2372650.8 |
 JV5953| HV4486 SILVER SPRING ST MICHAEL RC CH      APPROX. 4.7 KM 2422812.3 |
 JV5953| JV4310 SILVER SPR WOODSIDE WSSC TANK       APPROX. 5.9 KM 2623731.7 |
 JV5953|---------------------------------------------------------------------|
 JV5953
 JV5953                          SUPERSEDED SURVEY CONTROL
 JV5953
 JV5953  NAD 83(1986)-  39 01 00.41633(N)    076 58 28.54524(W) AD(       ) 1
 JV5953  NAD 27      -  39 01 00.02212(N)    076 58 29.63219(W) AD(       ) 1
 JV5953  NGVD 29 (07/19/86)  146.0    (m)          479.     (f) VERT ANG       
 JV5953
 JV5953.Superseded values are not recommended for survey control.
 JV5953
 JV5953.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5953.See file dsdata.pdf to determine how the superseded data were derived.
 JV5953
 JV5953_MARKER: DS = TRIANGULATION STATION DISK
 JV5953_SETTING: 0 = UNSPECIFIED SETTING
 JV5953
 JV5953  HISTORY     - Date     Condition        Report By
 JV5953  HISTORY     - 1970     MONUMENTED       NGS
 JV5953
 JV5953                          STATION DESCRIPTION
 JV5953
 JV5953'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5953'THE STATION IS ABOUT 3 MILES NORTHWEST OF COLLEGE PARK, 1/4
 JV5953'MILE SOUTH OF INTERSTATE HIGHWAY 495, 0.1 MILE NORTHWEST OF THE
 JV5953'MONTGOMERY-PRINCE GEORGES COUNTY LINE AND ON THE ROOF OF THE
 JV5953'ELEVATOR SHAFT OF THE WEST ONE TWO BUILDINGS OF THE CHATEAU
 JV5953'APARTMENTS LOCATED AT 9727 MT PISGAH ROAD IN SILVER SPRING.
 JV5953'
 JV5953'TO REACH THE STATION FROM THE INTERCHANGE OF INTERSTATE
 JV5953'HIGHWAY 495 AND STATE HIGHWAY 650 (NEW HAMPSHIRE AVENUE), GO
 JV5953'SOUTH ON STATE HIGHWAY 650 FOR 0.25 MILE TO A SIDE ROAD LEFT,
 JV5953'OAKVIEW DRIVE.  TURN LEFT AND GO EAST ON OAKVIEW DRIVE FOR 0.05
 JV5953'MILE TO MT PISGAH ROAD.  TURN LEFT AND GO NORTHEAST ON MT PISGAH
 JV5953'ROAD FOR 0.2 MILE TO THE WEST ONE OF TWO APARTMENT BUILDINGS AND
 JV5953'THE STATION ON THE ROOF OF THE ELEVATOR SHAFT.
 JV5953'
 JV5953'THE STATION MARK IS A STANDARD DISK, STAMPED CHATEAU 1969,
 JV5953'FIXED TO THE ROOF WITH ROOFING COMPOUND, UNDER A 6-INCH
 JV5953'CYLINDRICAL COPPER CAP THAT PROJECTS 8 INCHES ABOVE THE ROOF.  IT
 JV5953'IS 25.2 FEET WEST OF THE EAST EDGE OF THE ROOF, 21.9 FEET SOUTH
 JV5953'OF THE NORTH EDGE OF THE ROOF, AND 20.2 FEET NORTH OF THE
 JV5953'SOUTH EDGE OF THE ROOF.
 JV5953'
 JV5953'THE NORTHEAST CORNER OF THE ELEVATOR SHAFT AND THE SOUTHEAST
 JV5953'CORNER OF THE ELEVATOR SHAFT WERE USED AS REFERENCE POINTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0132 ***********************************************************************
 JV0132  DESIGNATION -  CHECKER
 JV0132  PID         -  JV0132
 JV0132  STATE/COUNTY-  MD/HARFORD
 JV0132  COUNTRY     -  US
 JV0132  USGS QUAD   -  ABERDEEN (2016)
 JV0132
 JV0132                         *CURRENT SURVEY CONTROL
 JV0132  ______________________________________________________________________
 JV0132* NAD 83(2011) POSITION- 39 33 38.55237(N) 076 10 13.61641(W)   ADJUSTED
 JV0132* NAD 83(2011) ELLIP HT-    94.026 (meters)        (06/27/12)   ADJUSTED
 JV0132* NAD 83(2011) EPOCH   -  2010.00
 JV0132* NAVD 88 ORTHO HEIGHT -   126.989 (meters)      416.63  (feet) ADJUSTED
 JV0132  ______________________________________________________________________
 JV0132  GEOID HEIGHT    -        -32.989 (meters)                     GEOID18
 JV0132  NAD 83(2011) X  -  1,177,002.097 (meters)                     COMP
 JV0132  NAD 83(2011) Y  - -4,781,247.414 (meters)                     COMP
 JV0132  NAD 83(2011) Z  -  4,040,562.077 (meters)                     COMP
 JV0132  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC18
 JV0132  DYNAMIC HEIGHT  -        126.927 (meters)      416.43  (feet) COMP
 JV0132  MODELED GRAVITY -    980,132.1   (mgal)                       NAVD 88
 JV0132
 JV0132  VERT ORDER      -  SECOND    CLASS 0
 JV0132
 JV0132  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0132  Standards:
 JV0132         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0132            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0132  -------------------------------------------------------------------
 JV0132  NETWORK    1.45   3.96           0.56   0.61   2.02      0.31379607
 JV0132  -------------------------------------------------------------------
 JV0132  Click here for local accuracies and other accuracy information.
 JV0132
 JV0132.The horizontal coordinates were established by GPS observations
 JV0132.and adjusted by the National Geodetic Survey in June 2012.
 JV0132
 JV0132.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0132.been affixed to the stable North American tectonic plate. See 
 JV0132.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0132
 JV0132.The horizontal coordinates are valid at the epoch date displayed above
 JV0132.which is a decimal equivalence of Year/Month/Day.
 JV0132
 JV0132.The orthometric height was determined by differential leveling and
 JV0132.adjusted by the NATIONAL GEODETIC SURVEY
 JV0132.in June 1991.
 JV0132
 JV0132.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0132.GEOID18 height accuracy estimate available here.
 JV0132
 JV0132.Click photographs - Photos may exist for this station.
 JV0132
 JV0132.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0132
 JV0132.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0132
 JV0132.The ellipsoidal height was determined by GPS observations
 JV0132.and is referenced to NAD 83.
 JV0132
 JV0132.The dynamic height is computed by dividing the NAVD 88
 JV0132.geopotential number by the normal gravity value computed on the
 JV0132.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0132.degrees latitude (g = 980.6199 gals.).
 JV0132
 JV0132.The modeled gravity was interpolated from observed gravity values.
 JV0132
 JV0132. The following values were computed from the NAD 83(2011) position.
 JV0132
 JV0132;                    North         East     Units Scale Factor Converg.
 JV0132;SPC MD       -   210,579.183   471,290.937   MT  1.00002124   +0 31 14.4
 JV0132;SPC MD       -   690,875.20  1,546,227.02   sFT  1.00002124   +0 31 14.4
 JV0132;UTM  18      - 4,379,656.210   399,452.217   MT  0.99972447   -0 44 43.9
 JV0132
 JV0132!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0132!SPC MD       -   0.99998525  x   1.00002124  =   1.00000649
 JV0132!UTM  18      -   0.99998525  x   0.99972447  =   0.99970972
 JV0132
 JV0132:                Primary Azimuth Mark                     Grid Az
 JV0132:SPC MD       -  CHECKER AZ MK                            326 09 48.6
 JV0132:UTM  18      -  CHECKER AZ MK                            327 25 46.9
 JV0132
 JV0132_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9945279656(NAD 83)
 JV0132
 JV0132|---------------------------------------------------------------------|
 JV0132| PID    Reference Object                     Distance      Geod. Az  |
 JV0132|                                                           dddmmss.s |
 JV0132| JV4782 HAVRE DE GRACE RADIO WASA MAST      APPROX. 4.5 KM 0832635.5 |
 JV0132| JV0131 CHECKER RM 1                         24.438 METERS 10228     |
 JV0132| JV0133 CHECKER RM 2                         22.754 METERS 22024     |
 JV0132| JV4797 STEPNEY STONEY FOREST FIRE TWR      APPROX. 7.3 KM 2284606.6 |
 JV0132| JV4801 CHAPEL HILL RESERVOIR TANK          148.740 METERS 24000     |
 JV0132| CB1071 CHECKER AZ MK                                      3264103.0 |
 JV0132|---------------------------------------------------------------------|
 JV0132
 JV0132                          SUPERSEDED SURVEY CONTROL
 JV0132
 JV0132  NAD 83(2007)-  39 33 38.55236(N)    076 10 13.61736(W) AD(2002.00) 0
 JV0132  ELLIP H (02/10/07)   94.040  (m)                       GP(2002.00)    
 JV0132  ELLIP H (09/18/02)   94.060  (m)                       GP(       ) 4 2
 JV0132  NAD 83(1991)-  39 33 38.55207(N)    076 10 13.61794(W) AD(       ) 2
 JV0132  ELLIP H (01/27/92)   94.049  (m)                       GP(       ) 4 1
 JV0132  NAD 83(1986)-  39 33 38.54540(N)    076 10 13.62406(W) AD(       ) 2
 JV0132  NAD 27      -  39 33 38.15410(N)    076 10 14.79740(W) AD(       ) 2
 JV0132  NGVD 29             127.25   (m)          417.5    (f) LEVELING    3  
 JV0132  NGVD 29             127.28   (m)          417.6    (f) LEVELING    3  
 JV0132  NGVD 29 (11/26/84)  127.253  (m)          417.50   (f) ADJUSTED    2 0
 JV0132
 JV0132.Superseded values are not recommended for survey control.
 JV0132
 JV0132.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0132.See file dsdata.pdf to determine how the superseded data were derived.
 JV0132
 JV0132_MARKER: DS = TRIANGULATION STATION DISK
 JV0132_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0132_STAMPING: CHECKER 1958
 JV0132_MARK LOGO: CGS
 JV0132_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0132_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0132+STABILITY: SURFACE MOTION
 JV0132_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0132+SATELLITE: SATELLITE OBSERVATIONS - October 01, 1989
 JV0132
 JV0132  HISTORY     - Date     Condition        Report By
 JV0132  HISTORY     - 1958     MONUMENTED       CGS
 JV0132  HISTORY     - 1959     GOOD             CGS
 JV0132  HISTORY     - 19891001 GOOD             RDA
 JV0132  HISTORY     - 1991     GOOD             USPSQD
 JV0132
 JV0132                          STATION DESCRIPTION
 JV0132
 JV0132'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0132'THE STATION IS LOCATED ABOUT 3-1/2 MILES WEST OF HAVRE DE GRACE,
 JV0132'ABOUT 3-1/4 MILES NORTH OF ABERDEEN, 0.1 MILE WEST OF STATE HIGHWAY
 JV0132'462 AND IS AT THE ABERDEEN PROVING GROUNDS WATER RESERVOIR.  IT
 JV0132'IS 170 FEET EAST OF A HIGH CHAIN LENGTH FENCE, 39 FEET NORTH OF A
 JV0132'POWER POLE AND 31-1/2 FEET SOUTH OF GRAVEL ROAD.  THE MARK IS
 JV0132'STANDARD TRIANGULATION STATION MARK DISK SET IN A 12X12 INCH
 JV0132'CONCRETE POST SET FLUSH AND THE DISK IS STAMPED CHECKER 1958.
 JV0132'
 JV0132'REFERENCE MARK NO. 1 IS 78 FEET EAST OF POWER POLE AND 73 FEET
 JV0132'SOUTH OF CENTER OF GRAVEL ROAD.  THE MARK IS A STANDARD REFERENCE
 JV0132'MARK DISK SET IN A 12X12 INCH CONCRETE POST PROJECTING ABOUT 2
 JV0132'INCHES AND THE DISK IS STAMPED CHECKER NO. 1 1958.
 JV0132'
 JV0132'REFERENCE MARK NO. 2 IS 71 FEET SOUTH OF CENTER OF ROAD, 54
 JV0132'FEET WEST OF POWER POLE AND 117 FEET EAST OF A HIGH CHAIN LENGTH
 JV0132'FENCE.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN A
 JV0132'12X12 INCH CONCRETE POST WHICH PROJECTS ABOUT 2 INCHES AND THE
 JV0132'DISK IS STAMPED CHECKER NO. 2 1958.
 JV0132'
 JV0132'AZIMUTH MARK IS 16 FEET NORTH-NORTHWEST OF THE CENTER OF STATE
 JV0132'HIGHWAY 161 AND 1 FOOT SOUTH OF WITNESS POST.  THE MARK IS A
 JV0132'STANDARD AZIMUTH MARK DISK SET IN A 12X12 INCH CONCRETE POST WHICH
 JV0132'IS SET FLUSH AND THE DISK IS STAMPED CHECKER 1958.
 JV0132'
 JV0132'TO REACH THE STATION FROM THE POST OFFICE IN ABERDEEN, GO
 JV0132'NORTHWEST ON STATE HIGHWAY 22 FOR 0.55 MILE TO THE JUNCTION OF
 JV0132'STATE HIGHWAY 462, TURN RIGHT AND GO NORTHERLY ON STATE HIGHWAY
 JV0132'462 FOR 3.3 MILES TO A GRAVEL SIDE ROAD LEFT, TURN LEFT AND GO
 JV0132'WESTERLY ON GRAVEL ROAD FOR 0.1 MILE TO THE STATION ON LEFT AS
 JV0132'DESCRIBED.
 JV0132'
 JV0132'TO REACH THE AZIMUTH MARK FROM THE STATION GO EAST ON GRAVEL
 JV0132'ROAD FOR 0.1 MILE, TURN LEFT AND GO NORTH ON STATE HIGHWAY 462
 JV0132'FOR 0.75 MILE TO THE JUNCTION OF STATE HIGHWAY 155, TURN LEFT AND
 JV0132'GO WEST ON STATE HIGHWAY 155 FOR 0.35 MILE TO THE JUNCTION OF STATE
 JV0132'HIGHWAY 156, KEEP RIGHT AND CONTINUE WESTERLY ON STATE HIGHWAY
 JV0132'155 FOR 0.65 MILE TO THE JUNCTION OF STATE HIGHWAY 161, TURN
 JV0132'RIGHT AND GO NORTH ON STATE HIGHWAY 161 FOR 0.1 MILE TO THE
 JV0132'AZIMUTH MARK ON LEFT AS DESCRIBED.
 JV0132'
 JV0132'THE AZIMUTH MARK IS VISIBLE FROM THE GROUND.
 JV0132'
 JV0132'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV0132
 JV0132                          STATION RECOVERY (1959)
 JV0132
 JV0132'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV0132'4.1 MI NE FROM ABERDEEN.
 JV0132'ABOUT 0.6 MILE NORTHWEST ALONG STATE HIGHWAY 22 FROM THE POST
 JV0132'OFFICE AT ABERDEEN, THENCE 3.4 MILES NORTHEAST ALONG STATE
 JV0132'HIGHWAY 462, THENCE 0.1 MILE WEST ALONG A GRAVELED ROAD
 JV0132'LEADING TO THE ABERDEEN PROVING GROUND WATER RESERVOIR, 31 FEET
 JV0132'SOUTH OF THE CENTER LINE OF THE ROAD, 170 FEET EAST OF A WIRE
 JV0132'FENCE AROUND A LARGE CHECKERED WATER TANK, 39 FEET NORTH OF A
 JV0132'POWER LINE POLE AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV0132'THE GROUND.
 JV0132
 JV0132                          STATION RECOVERY (1989)
 JV0132
 JV0132'RECOVERY NOTE BY RINKER DETWILER AND ASSOCIATES 1989
 JV0132'THE STATION IS LOCATED IN EASTERN HARFORD COUNTY, MARYLAND ABOUT 2.5
 JV0132'MILES NORTH OF THE VILLAGE OF ABERDEEN.
 JV0132'THE STATION, RM 1, AND RM 2 WERE RECOVERED IN GOOD CONDITION.  THE
 JV0132'AZIMUTH MARK WAS NOT RECOVERED.  THE PREVIOUS DESCRIPTION IS ADEQUATE.
 JV0132'ADDITIONAL INFORMATION AS FOLLOWS.
 JV0132'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 155 AND
 JV0132'STATE HIGHWAY 462 PROCEED SOUTH ALONG HIGHWAY 462 0.75 MILES TO ITS
 JV0132'INTERSECTION WITH U.S. GOVERNMENT FILTRATION PLANT ROAD.  TURN RIGHT
 JV0132'AND PROCEED WEST ALONG U.S. GOVERNMENT FILTRATION PLANT ROAD 0.15
 JV0132'MILES TO THE STATION ON THE LEFT.
 JV0132'THE STATION IS A STANDARD U.S. COAST AND GEODETIC SURVEY DISK SET IN
 JV0132'CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED CHECKER 1958.  THE STATION
 JV0132'IS 80.18 FEET WEST OF REFERENCE MARK NUMBER 1, 74.65 FEET NORTHEAST OF
 JV0132'REFERENCE MARK NUMBER 2, AND 30.60 FEET SOUTHEAST OF THE CENTERLINE OF
 JV0132'U.S. GOVERNMENT FILTRATION PLANT ROAD.
 JV0132
 JV0132                          STATION RECOVERY (1991)
 JV0132
 JV0132'RECOVERY NOTE BY US POWER SQUADRON 1991 (VHB)
 JV0132'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 CB1071 ***********************************************************************
 CB1071  DESIGNATION -  CHECKER AZ MK
 CB1071  PID         -  CB1071
 CB1071  STATE/COUNTY-  MD/HARFORD
 CB1071  COUNTRY     -  US
 CB1071  USGS QUAD   -  ABERDEEN (2016)
 CB1071
 CB1071                         *CURRENT SURVEY CONTROL
 CB1071  ______________________________________________________________________
 CB1071* NAD 83(1986) POSITION- 39 34 44.30   (N) 076 11 09.46   (W)   HD_HELD1
 CB1071* NAVD 88 ORTHO HEIGHT -   123.636 (meters)      405.63  (feet) ADJUSTED
 CB1071  ______________________________________________________________________
 CB1071  GEOID HEIGHT    -        -32.943 (meters)                     GEOID18
 CB1071  DYNAMIC HEIGHT  -        123.576 (meters)      405.43  (feet) COMP
 CB1071  MODELED GRAVITY -    980,134.7   (mgal)                       NAVD 88
 CB1071
 CB1071  VERT ORDER      -  FIRST     CLASS II
 CB1071
 CB1071.The horizontal coordinates were determined by differentially corrected
 CB1071.hand held GPS observations or other comparable positioning techniques
 CB1071.and have an estimated accuracy of +/- 3 meters.
 CB1071
 CB1071.The orthometric height was determined by differential leveling and
 CB1071.adjusted by the NATIONAL GEODETIC SURVEY
 CB1071.in September 2024.
 CB1071
 CB1071.Significant digits in the geoid height do not necessarily reflect accuracy.
 CB1071.GEOID18 height accuracy estimate available here.
 CB1071
 CB1071.Click photographs - Photos may exist for this station.
 CB1071
 CB1071.The dynamic height is computed by dividing the NAVD 88
 CB1071.geopotential number by the normal gravity value computed on the
 CB1071.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 CB1071.degrees latitude (g = 980.6199 gals.).
 CB1071
 CB1071.The modeled gravity was interpolated from observed gravity values.
 CB1071
 CB1071;                    North         East    Units  Estimated Accuracy
 CB1071;SPC MD       -   212,594.8     469,939.8     MT  (+/- 3 meters HH1 GPS) 
 CB1071
 CB1071_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9814681700(NAD 83)
 CB1071
 CB1071                          SUPERSEDED SURVEY CONTROL
 CB1071
 CB1071.No superseded survey control is available for this station.
 CB1071
 CB1071_MARKER: DZ = AZIMUTH MARK DISK
 CB1071_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 CB1071_STAMPING: CHECKER 1958
 CB1071_MARK LOGO: CGS
 CB1071_PROJECTION: FLUSH
 CB1071_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 CB1071+STABILITY: SURFACE MOTION
 CB1071_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 CB1071+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 CB1071
 CB1071  HISTORY     - Date     Condition        Report By
 CB1071  HISTORY     - 1958     MONUMENTED       CGS
 CB1071  HISTORY     - 20231213 GOOD             MDSHA
 CB1071  HISTORY     - 20231213 GOOD             MDSHA
 CB1071
 CB1071                          STATION DESCRIPTION
 CB1071
 CB1071'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 CB1071'RECOVERED IN GOOD CONDITION.
 CB1071'
 CB1071'THE MARK IS LOCATED ABOUT 5.4 MI (8.7 KM) WEST-NORTHWEST OF HAVRE DE
 CB1071'GRACE, 4.9 MI (7.9 KM) NORTH-NORTHWEST OF ABERDEEN AND 4.2 MI (6.8 KM)
 CB1071'WEST-SOUTHWEST OF PORT DEPOSIT.
 CB1071'
 CB1071'TO REACH THE MARK FROM THE INTERSECTION OF MD 22(CHURCHVILLE RD)AND MD
 CB1071'155(LEVEL ROAD)TURN LEFT ONTO MD 155 AND PROCEED NORTH EAST ON MD 155
 CB1071'FOR 5.97 KM (3.71 MI) TO THE INTERSECTION OF MD 161 (DARLINGTON ROAD).
 CB1071'TURN LEFT ON MD 161 AND PROCEED 0.25 KM (0.16 MI) ON THE MARK ON THE
 CB1071'LEFT, SET IN THE TOP OF A 10-IN (25.4 CM) SQUARE CONCRETE POST AND
 CB1071'ABOUT LEVEL WITH THE ROAD.
 CB1071'
 CB1071'THE MARK IS 106.6 FT (32.5 M) NORTH-NORTHEAST OF A CABLE VAULT, 104.1
 CB1071'FT (31.7 M) NORTH OF A UTILITY POLE NUMBERED BGE 299657, 60.6 FT (18.5
 CB1071'M) WEST-SOUTHWEST OF A UTILITY POLE NUMBERED BGE 561769, 17.1 FT (5.2
 CB1071'M) WEST-NORTHWEST OF THE CENTERLINE OF STATE ROUTE MD 161 AND ABOUT
 CB1071'LEVEL WITH THE ROAD.
 CB1071
 CB1071                          STATION RECOVERY (2023)
 CB1071
 CB1071'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 CB1071'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0131 ***********************************************************************
 JV0131  DESIGNATION -  CHECKER RM 1
 JV0131  PID         -  JV0131
 JV0131  STATE/COUNTY-  MD/HARFORD
 JV0131  COUNTRY     -  US
 JV0131  USGS QUAD   -  ABERDEEN (2016)
 JV0131
 JV0131                         *CURRENT SURVEY CONTROL
 JV0131  ______________________________________________________________________
 JV0131* NAD 83(1986) POSITION- 39 33 38.38   (N) 076 10 12.62   (W)   HD_HELD1
 JV0131* NAVD 88 ORTHO HEIGHT -   126.931 (meters)      416.44  (feet) ADJUSTED
 JV0131  ______________________________________________________________________
 JV0131  GEOID HEIGHT    -        -32.990 (meters)                     GEOID18
 JV0131  DYNAMIC HEIGHT  -        126.868 (meters)      416.23  (feet) COMP
 JV0131  MODELED GRAVITY -    980,132.1   (mgal)                       NAVD 88
 JV0131
 JV0131  VERT ORDER      -  SECOND    CLASS 0
 JV0131
 JV0131.The horizontal coordinates were determined by differentially corrected
 JV0131.hand held GPS observations or other comparable positioning techniques
 JV0131.and have an estimated accuracy of +/- 3 meters.
 JV0131
 JV0131.The orthometric height was determined by differential leveling and
 JV0131.adjusted by the NATIONAL GEODETIC SURVEY
 JV0131.in June 1991.
 JV0131
 JV0131.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0131.GEOID18 height accuracy estimate available here.
 JV0131
 JV0131.Click photographs - Photos may exist for this station.
 JV0131
 JV0131.The dynamic height is computed by dividing the NAVD 88
 JV0131.geopotential number by the normal gravity value computed on the
 JV0131.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0131.degrees latitude (g = 980.6199 gals.).
 JV0131
 JV0131.The modeled gravity was interpolated from observed gravity values.
 JV0131
 JV0131;                    North         East    Units  Estimated Accuracy
 JV0131;SPC MD       -   210,574.1     471,314.8     MT  (+/- 3 meters HH1 GPS) 
 JV0131
 JV0131_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9947579650(NAD 83)
 JV0131
 JV0131                          SUPERSEDED SURVEY CONTROL
 JV0131
 JV0131  NGVD 29 (11/26/84)  127.194  (m)          417.30   (f) ADJUSTED    2 0
 JV0131
 JV0131.Superseded values are not recommended for survey control.
 JV0131
 JV0131.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0131.See file dsdata.pdf to determine how the superseded data were derived.
 JV0131
 JV0131_MARKER: DR = REFERENCE MARK DISK
 JV0131_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0131_STAMPING: CHECKER NO 1 1958
 JV0131_MARK LOGO: CGS
 JV0131_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0131+STABILITY: SURFACE MOTION
 JV0131
 JV0131  HISTORY     - Date     Condition        Report By
 JV0131  HISTORY     - 1958     MONUMENTED       CGS
 JV0131  HISTORY     - 1959     GOOD             CGS
 JV0131  HISTORY     - 1991     GOOD             USPSQD
 JV0131
 JV0131                          STATION DESCRIPTION
 JV0131
 JV0131'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0131'4.1 MI NE FROM ABERDEEN.
 JV0131'ABOUT 0.6 MILE NORTHWEST ALONG STATE HIGHWAY 22 FROM THE POST
 JV0131'OFFICE AT ABERDEEN, THENCE 3.4 MILES NORTHEAST ALONG STATE
 JV0131'HIGHWAY 462, THENCE 0.1 MILE WEST ALONG A GRAVEL ROAD, 80 FEET
 JV0131'SOUTHEAST OF THE STATION, 78 FEET EAST OF A POWER LINE POLE, 73
 JV0131'FEET SOUTH OF THE CENTER LINE OF THE GRAVEL ROAD AND SET IN THE
 JV0131'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV0131
 JV0131                          STATION RECOVERY (1991)
 JV0131
 JV0131'RECOVERY NOTE BY US POWER SQUADRON 1991 (VHB)
 JV0131'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0133 ***********************************************************************
 JV0133  DESIGNATION -  CHECKER RM 2
 JV0133  PID         -  JV0133
 JV0133  STATE/COUNTY-  MD/HARFORD
 JV0133  COUNTRY     -  US
 JV0133  USGS QUAD   -  ABERDEEN (2016)
 JV0133
 JV0133                         *CURRENT SURVEY CONTROL
 JV0133  ______________________________________________________________________
 JV0133* NAD 83(1986) POSITION- 39 33 37.99   (N) 076 10 14.24   (W)   HD_HELD1
 JV0133* NAVD 88 ORTHO HEIGHT -   126.169 (meters)      413.94  (feet) ADJUSTED
 JV0133  ______________________________________________________________________
 JV0133  GEOID HEIGHT    -        -32.990 (meters)                     GEOID18
 JV0133  DYNAMIC HEIGHT  -        126.107 (meters)      413.74  (feet) COMP
 JV0133  MODELED GRAVITY -    980,132.1   (mgal)                       NAVD 88
 JV0133
 JV0133  VERT ORDER      -  SECOND    CLASS 0
 JV0133
 JV0133.The horizontal coordinates were determined by differentially corrected
 JV0133.hand held GPS observations or other comparable positioning techniques
 JV0133.and have an estimated accuracy of +/- 3 meters.
 JV0133
 JV0133.The orthometric height was determined by differential leveling and
 JV0133.adjusted by the NATIONAL GEODETIC SURVEY
 JV0133.in June 1991.
 JV0133
 JV0133.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0133.GEOID18 height accuracy estimate available here.
 JV0133
 JV0133.Click photographs - Photos may exist for this station.
 JV0133
 JV0133.The dynamic height is computed by dividing the NAVD 88
 JV0133.geopotential number by the normal gravity value computed on the
 JV0133.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0133.degrees latitude (g = 980.6199 gals.).
 JV0133
 JV0133.The modeled gravity was interpolated from observed gravity values.
 JV0133
 JV0133;                    North         East    Units  Estimated Accuracy
 JV0133;SPC MD       -   210,561.7     471,276.2     MT  (+/- 3 meters HH1 GPS) 
 JV0133
 JV0133_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9943779639(NAD 83)
 JV0133
 JV0133                          SUPERSEDED SURVEY CONTROL
 JV0133
 JV0133  NGVD 29 (11/26/84)  126.432  (m)          414.80   (f) ADJUSTED    2 0
 JV0133
 JV0133.Superseded values are not recommended for survey control.
 JV0133
 JV0133.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0133.See file dsdata.pdf to determine how the superseded data were derived.
 JV0133
 JV0133_MARKER: DR = REFERENCE MARK DISK
 JV0133_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0133_STAMPING: CHECKER NO 2 1958
 JV0133_MARK LOGO: CGS
 JV0133_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0133+STABILITY: SURFACE MOTION
 JV0133
 JV0133  HISTORY     - Date     Condition        Report By
 JV0133  HISTORY     - 1958     MONUMENTED       CGS
 JV0133  HISTORY     - 1959     GOOD             CGS
 JV0133  HISTORY     - 1991     GOOD             USPSQD
 JV0133
 JV0133                          STATION DESCRIPTION
 JV0133
 JV0133'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0133'4.1 MI NE FROM ABERDEEN.
 JV0133'ABOUT 0.6 MILE NORTHWEST ALONG STATE HIGHWAY 22 FROM THE POST
 JV0133'OFFICE AT ABERDEEN, THENCE 3.4 MILES NORTHEAST ALONG STATE
 JV0133'HIGHWAY 462, THENCE 0.1 MILE WEST ALONG A GRAVEL ROAD, 74.7
 JV0133'FEET SOUTHWEST OF THE STATION, 71 FEET SOUTH OF THE CENTER LINE
 JV0133'OF THE ROAD, 54 FEET WEST OF A POWER LINE POLE, SET IN THE TOP
 JV0133'OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV0133
 JV0133                          STATION RECOVERY (1991)
 JV0133
 JV0133'RECOVERY NOTE BY US POWER SQUADRON 1991 (VHB)
 JV0133'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 GV3596 ***********************************************************************
 GV3596  DESIGNATION -  CHEESE
 GV3596  PID         -  GV3596
 GV3596  STATE/COUNTY-  MD/SOMERSET
 GV3596  COUNTRY     -  US
 GV3596  USGS QUAD   -  EWELL (2016)
 GV3596
 GV3596                         *CURRENT SURVEY CONTROL
 GV3596  ______________________________________________________________________
 GV3596* NAD 83(1993) POSITION- 37 56 50.48547(N) 076 02 58.40843(W)   ADJUSTED
 GV3596* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 GV3596  ______________________________________________________________________
 GV3596  GEOID HEIGHT    -        -35.989 (meters)                     GEOID18
 GV3596  LAPLACE CORR    -         -1.82  (seconds)                    DEFLEC18
 GV3596  HORZ ORDER      -  THIRD
 GV3596
 GV3596.The horizontal coordinates were established by classical geodetic methods
 GV3596.and adjusted by the National Geodetic Survey in November 1994.
 GV3596
 GV3596.The orthometric height was scaled from a topographic map.
 GV3596
 GV3596.Significant digits in the geoid height do not necessarily reflect accuracy.
 GV3596.GEOID18 height accuracy estimate available here.
 GV3596
 GV3596.Click photographs - Photos may exist for this station.
 GV3596
 GV3596.The Laplace correction was computed from DEFLEC18 derived deflections.
 GV3596
 GV3596. The following values were computed from the NAD 83(1993) position.
 GV3596
 GV3596;                    North         East     Units Scale Factor Converg.
 GV3596;SPC MD       -    31,593.374   483,544.486   MT  1.00008004   +0 35 47.5
 GV3596;SPC MD       -   103,652.59  1,586,428.87   sFT  1.00008004   +0 35 47.5
 GV3596;SPC VA S     - 1,181,917.515 3,715,357.193   MT  0.99999653   +1 29 14.0
 GV3596;SPC VA S     - 3,877,674.38 12,189,467.72   sFT  0.99999653   +1 29 14.0
 GV3596;UTM  18      - 4,200,493.621   407,784.518   MT  0.99970473   -0 38 43.6
 GV3596
 GV3596!             -  Elev Factor  x  Scale Factor =   Combined Factor
 GV3596!SPC MD       -   1.00000571  x   1.00008004  =   1.00008575
 GV3596!SPC VA S     -   1.00000571  x   0.99999653  =   1.00000224
 GV3596!UTM  18      -   1.00000571  x   0.99970473  =   0.99971044
 GV3596
 GV3596:                Primary Azimuth Mark                     Grid Az
 GV3596:SPC MD       -  SHANKS HAMMOCK 2                         164 56 27.8
 GV3596:SPC VA S     -  SHANKS HAMMOCK 2                         164 03 01.3
 GV3596:UTM  18      -  SHANKS HAMMOCK 2                         166 10 58.9
 GV3596
 GV3596_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0778400493(NAD 83)
 GV3596
 GV3596|---------------------------------------------------------------------|
 GV3596| PID    Reference Object                     Distance      Geod. Az  |
 GV3596|                                                           dddmmss.s |
 GV3596| GV3603 SMITH ISLAND OLD CHURCH SPIRE       APPROX. 3.5 KM 0110207.8 |
 GV3596| GV3609 SMITH ISLAND EWELL CH SPIRE         APPROX. 3.9 KM 0430706.4 |
 GV3596| GV3602 SHANKS HAMMOCK 2                    APPROX. 2.8 KM 1653215.3 |
 GV3596|---------------------------------------------------------------------|
 GV3596
 GV3596                          SUPERSEDED SURVEY CONTROL
 GV3596
 GV3596  NAD 83(1991)-  37 56 50.48940(N)    076 02 58.41484(W) AD(       ) 3
 GV3596  NAD 83(1986)-  37 56 50.48696(N)    076 02 58.43178(W) AD(       ) 3
 GV3596  NAD 27      -  37 56 49.99300(N)    076 02 59.67500(W) AD(       ) 3
 GV3596  USSD        -  37 56 50.86700(N)    076 02 59.32100(W) AD(       ) 3
 GV3596
 GV3596.Superseded values are not recommended for survey control.
 GV3596
 GV3596.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 GV3596.See file dsdata.pdf to determine how the superseded data were derived.
 GV3596
 GV3596_MARKER: T = CHISELED TRIANGLE
 GV3596_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 GV3596_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 GV3596+STABILITY: SURFACE MOTION
 GV3596
 GV3596  HISTORY     - Date     Condition        Report By
 GV3596  HISTORY     - 1911     MONUMENTED       CGS
 GV3596
 GV3596                          STATION DESCRIPTION
 GV3596
 GV3596'DESCRIBED BY COAST AND GEODETIC SURVEY 1911 (JBB)
 GV3596'STATION IS SW OF SMITH ISLAND, ON THE WESTERN SHORE OF HOG NECK,
 GV3596'1/4 MILE N OF THE LONG NARROW STRIP OF SAND EXTENDING S TOWARD
 GV3596'SHANKS HAMMOCK, 33 FEET E OF THE SHORE LINE AND 50 FEET W OF
 GV3596'A SMALL POND.  MARKED BY A CEMENT BLOCK 6 BY 6 BY 24 INCHES,
 GV3596'EXTENDING ABOUT 2 INCHES ABOVE THE SURFACE, WITH A TRIANGLE,
 GV3596'THE YEAR 1910 AND THE LETTERS C.G.S. CUT IN ITS TOP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6107 ***********************************************************************
 HV6107  DESIGNATION -  CHEF MSFC 1909
 HV6107  PID         -  HV6107
 HV6107  STATE/COUNTY-  MD/DORCHESTER
 HV6107  COUNTRY     -  US
 HV6107  USGS QUAD   -  TILGHMAN (2016)
 HV6107
 HV6107                         *CURRENT SURVEY CONTROL
 HV6107  ______________________________________________________________________
 HV6107* NAD 83(1991) POSITION- 38 37 55.73162(N) 076 17 27.73234(W)   ADJUSTED
 HV6107* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6107  ______________________________________________________________________
 HV6107  GEOID HEIGHT    -        -34.446 (meters)                     GEOID18
 HV6107  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 HV6107  HORZ ORDER      -  THIRD
 HV6107
 HV6107.The horizontal coordinates were established by classical geodetic methods
 HV6107.and adjusted by the National Geodetic Survey in January 1992.
 HV6107
 HV6107.The orthometric height was scaled from a topographic map.
 HV6107
 HV6107.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6107.GEOID18 height accuracy estimate available here.
 HV6107
 HV6107.Click photographs - Photos may exist for this station.
 HV6107
 HV6107.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6107
 HV6107. The following values were computed from the NAD 83(1991) position.
 HV6107
 HV6107;                    North         East     Units Scale Factor Converg.
 HV6107;SPC MD       -   107,411.849   461,728.504   MT  0.99995884   +0 26 41.9
 HV6107;SPC MD       -   352,400.37  1,514,854.27   sFT  0.99995884   +0 26 41.9
 HV6107;UTM  18      - 4,276,747.383   387,628.204   MT  0.99975550   -0 48 22.0
 HV6107
 HV6107!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6107!SPC MD       -   1.00000544  x   0.99995884  =   0.99996428
 HV6107!UTM  18      -   1.00000544  x   0.99975550  =   0.99976094
 HV6107
 HV6107:                Primary Azimuth Mark                     Grid Az
 HV6107:SPC MD       -  JERE                                     256 08 35.5
 HV6107:UTM  18      -  JERE                                     257 23 39.4
 HV6107
 HV6107_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8762876747(NAD 83)
 HV6107
 HV6107|---------------------------------------------------------------------|
 HV6107| PID    Reference Object                     Distance      Geod. Az  |
 HV6107|                                                           dddmmss.s |
 HV6107| HV6127 JERE                                APPROX. 6.5 KM 2563517.4 |
 HV6107|---------------------------------------------------------------------|
 HV6107
 HV6107                          SUPERSEDED SURVEY CONTROL
 HV6107
 HV6107  NAD 83(1986)-  38 37 55.72907(N)    076 17 27.74735(W) AD(       ) 3
 HV6107  NAD 27      -  38 37 55.30100(N)    076 17 28.93000(W) AD(       ) 3
 HV6107  USSD        -  38 37 55.68700(N)    076 17 28.74200(W) AD(       ) 3
 HV6107
 HV6107.Superseded values are not recommended for survey control.
 HV6107
 HV6107.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6107.See file dsdata.pdf to determine how the superseded data were derived.
 HV6107
 HV6107_MARKER: U = CONCRETE POST
 HV6107_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6107_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6107_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6107
 HV6107  HISTORY     - Date     Condition        Report By
 HV6107  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6107  HISTORY     - 20020329 MARK NOT FOUND   USPSQD
 HV6107
 HV6107                          STATION DESCRIPTION
 HV6107
 HV6107'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6107'ON THE EASTERN SHORE OF CHESAPEAKE BAY, ON COOKS POINT, AT SOUTHERN
 HV6107'SIDE OF ENTRANCE OF CHOPTANK RIVER, ABOUT 4 MILES E OF SHARPS
 HV6107'ISLAND, IN CULTIVATED FIELD ABOUT 8 FEET ABOVE HIGH WATER, 30 YARDS
 HV6107'INSIDE OF FRINGE OF TREES PARALLEL WITH SHORE, 45 YARDS SW OF
 HV6107'EASTERN END OF FRINGE OF TREES, 70 YARDS E OF WESTERN END OF
 HV6107'FRINGE OF TREES, AND 190 YARDS N OF GATE IN FENCE RUNNING E AND W.
 HV6107'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6107'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6107'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6107'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6107'SUB-SURFACE MARK IS THE CENTER OF 2-INCH TILE PIPE BURIED WITH
 HV6107'THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND
 HV6107'BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT
 HV6107'PEAK OF HOTEL ON SHARPS ISLAND, 4 MILES, S 77 DEG 26 MIN W.  NAIL IN
 HV6107'BLAZE IN 4-INCH WILD CHERRY TREE, 31.43 METERS (103.1 FEET),
 HV6107'N 65 DEG 20 MIN W.  NAIL IN BLAZE IN 5-INCH LOCUST TREE, 28.53 METERS
 HV6107'(93.6 FEET), N 37 DEG 52 MIN W.  NAIL IN BLAZE IN 5-INCH LOCUST
 HV6107'TREE, 29.94 METERS, (98.29 FEET), N 4 DEG 58 MIN W.  NAIL IN BLAZE
 HV6107'IN 6-INCH LOCUST TREE, 43.16 METERS (141.6 FEET), N 15 DEG 50
 HV6107'MIN E.  LONE PERSIMMON TREE, 231 YARDS, N 81 DEG 46 MIN E.  RIGHT
 HV6107'CHIMNEY OUTSIDE OF HOUSE, 2-1/4 MILES, S 69 DEG 59 MIN E.  CHIMNEY
 HV6107'OF RIGHT ONE OF TWO HOUSES, 1/4 MILE, S 41 DEG 24 MIN E.  RIGHT
 HV6107'PEAK OF BARN, 1/4 MILE, S 12 DEG 42 MIN E.
 HV6107
 HV6107                          STATION RECOVERY (2002)
 HV6107
 HV6107'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV6107'NOAA CHART 12263 INDICATES COOKS POINT IS SIGNIFICANTLY ERODED.
 HV6107'POSITION NOW PLOTS IN THE WATER.  SHARPS ISLAND AND ALL REFERENCES ON
 HV6107'THE ISLAND DO NOT EXIST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4927 ***********************************************************************
 JV4927  DESIGNATION -  CHELSEA
 JV4927  PID         -  JV4927
 JV4927  STATE/COUNTY-  MD/HARFORD
 JV4927  COUNTRY     -  US
 JV4927  USGS QUAD   -  PERRYMAN (2016)
 JV4927
 JV4927                         *CURRENT SURVEY CONTROL
 JV4927  ______________________________________________________________________
 JV4927* NAD 83(1991) POSITION- 39 25 16.21848(N) 076 13 32.37582(W)   ADJUSTED
 JV4927* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV4927  ______________________________________________________________________
 JV4927  GEOID HEIGHT    -        -33.218 (meters)                     GEOID18
 JV4927  LAPLACE CORR    -         -1.96  (seconds)                    DEFLEC18
 JV4927  HORZ ORDER      -  SECOND
 JV4927
 JV4927.The horizontal coordinates were established by classical geodetic methods
 JV4927.and adjusted by the National Geodetic Survey in January 1992.
 JV4927
 JV4927.The orthometric height was scaled from a topographic map.
 JV4927
 JV4927.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4927.GEOID18 height accuracy estimate available here.
 JV4927
 JV4927.Click photographs - Photos may exist for this station.
 JV4927
 JV4927.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4927
 JV4927. The following values were computed from the NAD 83(1991) position.
 JV4927
 JV4927;                    North         East     Units Scale Factor Converg.
 JV4927;SPC MD       -   195,045.842   466,677.680   MT  0.99999508   +0 29 09.6
 JV4927;SPC MD       -   639,912.90  1,531,091.69   sFT  0.99999508   +0 29 09.6
 JV4927;UTM  18      - 4,364,232.798   394,498.452   MT  0.99973704   -0 46 42.2
 JV4927
 JV4927!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4927!SPC MD       -   1.00000494  x   0.99999508  =   1.00000002
 JV4927!UTM  18      -   1.00000494  x   0.99973704  =   0.99974198
 JV4927
 JV4927:                Primary Azimuth Mark                     Grid Az
 JV4927:SPC MD       -  CHELSEA AZ MK                            205 01 42.6
 JV4927:UTM  18      -  CHELSEA AZ MK                            206 17 34.4
 JV4927
 JV4927_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9449864232(NAD 83)
 JV4927
 JV4927|---------------------------------------------------------------------|
 JV4927| PID    Reference Object                     Distance      Geod. Az  |
 JV4927|                                                           dddmmss.s |
 JV4927| CB1074 CHELSEA RM 2                         24.430 METERS 01917     |
 JV4927| CB1072 CHELSEA AZ MK                                      2053052.2 |
 JV4927| JV4933 C TOWER                             APPROX. 3.7 KM 2055620.1 |
 JV4927| CB1073 CHELSEA RM 1                         28.219 METERS 27801     |
 JV4927|---------------------------------------------------------------------|
 JV4927
 JV4927                          SUPERSEDED SURVEY CONTROL
 JV4927
 JV4927  NAD 83(1986)-  39 25 16.21197(N)    076 13 32.38269(W) AD(       ) 2
 JV4927  NAD 27      -  39 25 15.82100(N)    076 13 33.54500(W) AD(       ) 2
 JV4927
 JV4927.Superseded values are not recommended for survey control.
 JV4927
 JV4927.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4927.See file dsdata.pdf to determine how the superseded data were derived.
 JV4927
 JV4927_MARKER: DS = TRIANGULATION STATION DISK
 JV4927_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4927_STAMPING: CHELSEA 1949
 JV4927_MARK LOGO: CGS
 JV4927_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4927+STABILITY: SURFACE MOTION
 JV4927
 JV4927  HISTORY     - Date     Condition        Report By
 JV4927  HISTORY     - 1949     MONUMENTED       CGS
 JV4927  HISTORY     - 1961     GOOD             CGS
 JV4927
 JV4927                          STATION DESCRIPTION
 JV4927
 JV4927'DESCRIBED BY COAST AND GEODETIC SURVEY 1949 (CAS)
 JV4927'STATION IS LOCATED ON THE ABERDEEN PROVING GROUNDS ON THE WEST EDGE
 JV4927'OF POVERTY ISLAND.  THE MARK IS A 6 X 6 INCH CONCRETE POST
 JV4927'PROJECTING 8 INCHES WITH A BRASS DISK STAMPED CHELSEA 1949.
 JV4927'
 JV4927'REFERENCE MARK NO. 1 IS FLUSH WITH THE GROUND AND IS STAMPED
 JV4927'CHELSEA NO 1 1949.
 JV4927'
 JV4927'REFERENCE MARK NO. 2 IS FLUSH WITH THE GROUND AND IS STAMPED
 JV4927'CHELSEA NO 2 1949.
 JV4927'
 JV4927'AZIMUTH MARK IS 3 FEET WEST OF A POWER LINE POLE.  THE MARK
 JV4927'PROJECTS 6 INCHES AND THE DISK IS STAMPED CHELSEA 1949.
 JV4927'
 JV4927'TO REACH THE STATION FROM GATE NO. 3 ON THE PROVING GROUND,
 JV4927'GO WEST AND SOUTHWEST ON A PAVED ROAD FOR 4.5 MILES TO A CROSS
 JV4927'ROAD, TURN RIGHT AND GO WEST 0.2 MILES THEN TURN LEFT AND GO
 JV4927'SOUTHWEST FOR 2.8 MILES TO A DIM ROAD STRAIGHT AHEAD, CONTINUE
 JV4927'AHEAD ON THIS ROAD FOR 0.3 MILES TO THE STATION AS DESCRIBED.
 JV4927'
 JV4927'TO REACH THE AZIMUTH MARK FROM THE STATION GO SOUTHWEST ALONG THE
 JV4927'POWER LINE POLES FOR 0.3 MILES TO THE MARK AS DESCRIBED.
 JV4927'
 JV4927'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4927
 JV4927                          STATION RECOVERY (1961)
 JV4927
 JV4927'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV4927'THE STATION, REFERENCE MARK NO.2, AND AZIMUTH MARK WERE RECOVERED
 JV4927'IN GOOD CONDITION.  THE DISTANCE, ANGLE, AND STAMPINGS ON THE
 JV4927'STATION, AZIMUTH MARK, AND R.M. NO. 2 WERE FOUND CORRECT AS
 JV4927'PUBLISHED.
 JV4927'
 JV4927'R.M. NO. 1 WAS FOUND DESTROYED.  THE CONCRETE MONUMENT HAD BEEN
 JV4927'DISTURBED AND THE DISK WAS BROKEN OFF.
 JV4927'
 JV4927'THE ORIGINAL DESCRIPTION IS CORRECT WITH THE FOLLOWING ADDITIONS.
 JV4927'
 JV4927'THE STATION IS 71.35 FEET S.E. OF THE S.E. CORNER OF A SMALL
 JV4927'CONCRETE BLOCK BUILDING, AND 64.46 FEET NORTH OF AN OLD CIRCULAR
 JV4927'BRICK CHIMNEY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7385 ***********************************************************************
 HV7385  DESIGNATION -  CHELTENHAM
 HV7385  PID         -  HV7385
 HV7385  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7385  COUNTRY     -  US
 HV7385  USGS QUAD   -  BRANDYWINE (2016)
 HV7385
 HV7385                         *CURRENT SURVEY CONTROL
 HV7385  ______________________________________________________________________
 HV7385* NAD 83(1991) POSITION- 38 44 16.98180(N) 076 49 49.87056(W)   ADJUSTED
 HV7385* NAVD 88 ORTHO HEIGHT -    75.    (meters)      246.    (feet) SCALED
 HV7385  ______________________________________________________________________
 HV7385  GEOID HEIGHT    -        -32.844 (meters)                     GEOID18
 HV7385  LAPLACE CORR    -         -5.98  (seconds)                    DEFLEC18
 HV7385  HORZ ORDER      -  SECOND
 HV7385
 HV7385.The horizontal coordinates were established by classical geodetic methods
 HV7385.and adjusted by the National Geodetic Survey in January 1992.
 HV7385
 HV7385.The orthometric height was scaled from a topographic map.
 HV7385
 HV7385.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7385.GEOID18 height accuracy estimate available here.
 HV7385
 HV7385.Click photographs - Photos may exist for this station.
 HV7385
 HV7385.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7385
 HV7385. The following values were computed from the NAD 83(1991) position.
 HV7385
 HV7385;                    North         East     Units Scale Factor Converg.
 HV7385;SPC MD       -   118,941.523   414,734.752   MT  0.99995272   +0 06 22.9
 HV7385;SPC MD       -   390,227.31  1,360,675.60   sFT  0.99995272   +0 06 22.9
 HV7385;UTM  18      - 4,289,299.066   340,903.375   MT  0.99991170   -1 08 44.5
 HV7385
 HV7385!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7385!SPC MD       -   0.99999342  x   0.99995272  =   0.99994614
 HV7385!UTM  18      -   0.99999342  x   0.99991170  =   0.99990512
 HV7385
 HV7385:                Primary Azimuth Mark                     Grid Az
 HV7385:SPC MD       -  CHELTENHAM AZ MK RESET                   110 34 53.2
 HV7385:UTM  18      -  CHELTENHAM AZ MK RESET                   111 50 00.6
 HV7385
 HV7385_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4090389299(NAD 83)
 HV7385
 HV7385|---------------------------------------------------------------------|
 HV7385| PID    Reference Object                     Distance      Geod. Az  |
 HV7385|                                                           dddmmss.s |
 HV7385| CX2221 CHELTENHAM AZ MK                                   1104128.8 |
 HV7385| CX2222 CHELTENHAM AZ MK RESET                             1104116.1 |
 HV7385| CX2223 CHELTENHAM RM 1                      41.270 METERS 12457     |
 HV7385| CX2224 CHELTENHAM RM 2                      42.706 METERS 16816     |
 HV7385| HV7395 BRANDYWINE STATE FOREST LOT         APPROX. 4.6 KM 1912127.8 |
 HV7385| HV7422 WALDORF ATT MICROWAVE               APPROX.16.1 KM 2085605.2 |
 HV7385| HV7392 RNG ANDREWS RADIO AF ADW            APPROX. 5.3 KM 2115526.0 |
 HV7385| HV7383 CHELTENHAM REFORM SCH S TANK        APPROX. 0.7 KM 2612152.2 |
 HV7385| HV7382 CHELTENHAM REFORM SCH N TANK        APPROX. 0.8 KM 2621542.9 |
 HV7385| HV7389 CHELTENHAM NAVAL RAD STA W TK       APPROX. 2.6 KM 3004412.1 |
 HV7385| HV7507 CHELTENHAM NAVAL RAD TWR            APPROX. 2.8 KM 3031024.0 |
 HV7385| HV7390 CHELTENHAM NAVAL RAD STA E TK       APPROX. 2.4 KM 3032001.8 |
 HV7385| HV7594 CAMP SPRS FIGHTER COMM CON TWR      APPROX. 8.4 KM 3313046.5 |
 HV7385|---------------------------------------------------------------------|
 HV7385
 HV7385                          SUPERSEDED SURVEY CONTROL
 HV7385
 HV7385  NAD 83(1986)-  38 44 16.97956(N)    076 49 49.88522(W) AD(       ) 2
 HV7385  NAD 27      -  38 44 16.56469(N)    076 49 50.99119(W) AD(       ) 2
 HV7385
 HV7385.Superseded values are not recommended for survey control.
 HV7385
 HV7385.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7385.See file dsdata.pdf to determine how the superseded data were derived.
 HV7385
 HV7385_MARKER: DS = TRIANGULATION STATION DISK
 HV7385_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7385_STAMPING: CHELTENHAM 1943
 HV7385_MARK LOGO: CGS
 HV7385_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7385+STABILITY: SURFACE MOTION
 HV7385
 HV7385  HISTORY     - Date     Condition        Report By
 HV7385  HISTORY     - 1943     MONUMENTED       CGS
 HV7385  HISTORY     - 1957     GOOD             CGS
 HV7385  HISTORY     - 1957     GOOD             MDBCSM
 HV7385  HISTORY     - 1958     GOOD             CGS
 HV7385  HISTORY     - 1968     GOOD             CGS
 HV7385
 HV7385                          STATION DESCRIPTION
 HV7385
 HV7385'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7385'THE STATION IS LOCATED NEAR THE NORTHEAST ENTRANCE OF THE
 HV7385'CHELTENHAM REFORM SCHOOL WHICH IS ABOUT 3-1/2 MILES NORTHEAST
 HV7385'OF T.B., MARYLAND.  IT IS 136 FEET NORTHWEST OF THE ENTRANCE
 HV7385'GATE, 59 FEET NORTH NORTHEAST OF THE MAIN MACADAM DRIVE, 24 FEET
 HV7385'SOUTH SOUTHWEST OF THE CENTER OF A GRAVEL ROAD AND 11 FEET SOUTH
 HV7385'SOUTHWEST OF A FENCE LINE.  IT IS STAMPED CHELTENHAM 1943 AND
 HV7385'PROJECTS 10 INCHES.
 HV7385'
 HV7385'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 HV7385'DISKS SET IN CONCRETE.
 HV7385'
 HV7385'REFERENCE MARK NO. 1 IS EAST SOUTHEAST OF THE STATION, IN A
 HV7385'FENCE LINE, 14 FEET NORTH NORTHEAST OF THE CENTER OF THE MACADAM
 HV7385'ROAD AT THE ENTRANCE GATE AND 6 FEET SOUTH SOUTHWEST OF A FENCE
 HV7385'CORNER.  IT IS STAMPED CHELTENHAM NO. 1 1943 AND PROJECTS 6
 HV7385'INCHES.
 HV7385'
 HV7385'REFERENCE MARK NO. 2 IS SOUTH SOUTHEAST OF THE STATION, IN A
 HV7385'FENCE LINE 15 FEET NORTHWEST OF THE CENTER OF A GRAVEL ROAD.  IT
 HV7385'IS STAMPED CHELTENHAM NO. 2 1943 AND PROJECTS 6 INCHES.
 HV7385'
 HV7385'THE AZIMUTH MARK IS ABOUT 0.3 MILE EAST NORTHEAST OF THE STATION,
 HV7385'0.05 MILE NORTH OF THE CHELTENHAM POST OFFICE, 16 FEET EAST OF
 HV7385'THE CENTER OF U.S. HIGHWAY 301 AND 5 FEET SOUTHWEST OF POWER
 HV7385'LINE POLE PEP 813636.  IT IS STAMPED CHELTENHAM 1943 AND PROJECTS
 HV7385'6 INCHES.
 HV7385'
 HV7385'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV7385'STATE HIGHWAY 5 IN T.B., GO NORTHEAST ON HIGHWAY 301 FOR 3.85 MILES
 HV7385'TO A CROSSROAD AT THE CHELTENHAM POST OFFICE, (THE AZIMUTH MARK
 HV7385'IS 0.05 MILE NORTH OF HERE), TURN LEFT ON A GRAVEL ROAD AND GO
 HV7385'0.25 MILE TO THE ENTRANCE GATE OF THE CHELTENHAM REFORM SCHOOL
 HV7385'AND THE STATION AS DESCRIBED.
 HV7385'
 HV7385'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT MELLWOOD.
 HV7385'
 HV7385'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT TIPPETT 1934.
 HV7385'
 HV7385'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WOOD 1934.
 HV7385'
 HV7385'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT BEALLE, 1934 ECC.
 HV7385'
 HV7385'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT SCHWIEN.
 HV7385'
 HV7385'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WYVILLE 1933.
 HV7385'
 HV7385'A 77-FOOT TOWER WILL SEE A 74-FOOT LIGHT AT OBSERVATORY.
 HV7385'
 HV7385'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV7385
 HV7385                          STATION RECOVERY (1957)
 HV7385
 HV7385'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV7385'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 HV7385'TO BE IN GOOD CONDITION, EXCEPT THE AZIMUTH MARK WHICH HAS BEEN
 HV7385'DESTROYED.  THE DISTANCE AND DIRECTIONS TO THE REFERENCE MARKS
 HV7385'WERE CHECKED AND FOUND TO BE CORRECT.
 HV7385'
 HV7385'THE STATION AND REFERENCE MARKS ARE STAMPED CHELTENHAM 1943.
 HV7385'
 HV7385'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 HV7385
 HV7385                          STATION RECOVERY (1957)
 HV7385
 HV7385'RECOVERY NOTE BY MD BUR SURV AND MAPS 1957 (EJM)
 HV7385'LETTER OF MR. E.J. MORAWSHI, ASST. ENGR., BUREAU OF CONTROL
 HV7385'SURVEYS AND MAPS, BALTIMORE, MARYLAND, DATED JUNE 4, 1957--
 HV7385'
 HV7385'STATION CHELTENHAM AND REFERENCE MARKS WERE RECOVERED AS
 HV7385'DESCRIBED.  THE AZIMUTH MARK WAS RESET ON THE SAME LINE AND ONLY
 HV7385'THE DESCRIPTION IS CHANGED.  THE SAME DISK WAS USED AND RESTAMPED
 HV7385'RESET 1957.
 HV7385'
 HV7385'THE AZIMUTH MARK IS A STANDARD U.S.C. AND G.S. DISK STAMPED
 HV7385'CHELTENHAM 1943 RESET 1957, SET IN CONCRETE POST AND PROJECTS
 HV7385'6 IN.  IT IS ABOUT 0.3 MI. E-NE OF THE STATION, 0.05 MI. N OF THE
 HV7385'CHELTENHAM POST OFFICE, 23.6 FT. W OF THE CENTERLINE OF
 HV7385'U.S. HIGHWAY 301, AND 48.0 FT. SE OF POWERLINE POLE PEP 813636.
 HV7385
 HV7385                          STATION RECOVERY (1958)
 HV7385
 HV7385'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7385'STATION WAS RECOVERED TO CHECK POSITION AND DIRECTION OF AZIMUTH
 HV7385'MARK.  STATION AND REFERENCE MARKS ARE IN GOOD CONDITION.  RECOVERY
 HV7385'NOTE OF M.B.C.S., 1957 IS ADEQUATE FOR LOCATION.
 HV7385'
 HV7385'ORIGINAL AZIMUTH MARK HAS BEEN DESTROYED AND REESTABLISHED
 HV7385'ACROSS THE ROAD (TO THE W).  IT IS NOW SET IN A 6-IN. DIAMETER
 HV7385'CONCRETE POST, PROJECTING ABOUT 6 IN. ABOVE THE SURFACE.  THE
 HV7385'ORIGINAL DISK WAS USED, AND IS NOW STAMPED CHELTENHAM 1943 RESET
 HV7385'1957.  IT IS UNDERSTOOD THAT THE RESETTING WAS DONE BY THE
 HV7385'MARYLAND BUREAU OF CONTROL SURVEYS AND MAPS SOMETIME IN 1957.
 HV7385'
 HV7385'THE TOP OF THE OLD MONUMENT HAS BEEN BROKEN OFF AND IS NO
 HV7385'LONGER USABLE.  IT IS ABOUT LEVEL WITH THE SURFACE OF THE GROUND.
 HV7385
 HV7385                          STATION RECOVERY (1968)
 HV7385
 HV7385'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (JCB)
 HV7385'STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED AND
 HV7385'FOUND TO BE IN GOOD CONDITION.  THE AZIMUTH MARK THAT WAS RESET
 HV7385'IN 1957 WAS NOT RECOVERED.  UPON REQUEST OF THE COUNTY DEPARTMENT
 HV7385'OF PUBLIC WORKS A NEW STATION AND TWO NEW REFERENCE MARKS
 HV7385'WERE ESTABLISHED.  THE ORIGINAL STATION AND REFERENCE MARKS WERE
 HV7385'DESTROYED AS THEY WERE IN THE CONSTRUCTION LIMITS OF HIGHWAY
 HV7385'IMPROVEMENTS.
 HV7385'
 HV7385'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV7385'3-1/2 MILES NORTHEAST OF T.B.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0819 ***********************************************************************
 HV0819  DESIGNATION -  CHELTENHAM 2
 HV0819  PID         -  HV0819
 HV0819  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0819  COUNTRY     -  US
 HV0819  USGS QUAD   -  BRANDYWINE (2016)
 HV0819
 HV0819                         *CURRENT SURVEY CONTROL
 HV0819  ______________________________________________________________________
 HV0819* NAD 83(2011) POSITION- 38 44 17.54853(N) 076 49 51.08529(W)   ADJUSTED
 HV0819* NAD 83(2011) ELLIP HT-    39.933 (meters)        (06/27/12)   ADJUSTED
 HV0819* NAD 83(2011) EPOCH   -  2010.00
 HV0819* NAVD 88 ORTHO HEIGHT -    72.680 (meters)      238.45  (feet) ADJUSTED
 HV0819  ______________________________________________________________________
 HV0819  GEOID HEIGHT    -        -32.843 (meters)                     GEOID18
 HV0819  NAD 83(2011) X  -  1,134,939.705 (meters)                     COMP
 HV0819  NAD 83(2011) Y  - -4,850,589.028 (meters)                     COMP
 HV0819  NAD 83(2011) Z  -  3,969,714.642 (meters)                     COMP
 HV0819  LAPLACE CORR    -         -5.98  (seconds)                    DEFLEC18
 HV0819  DYNAMIC HEIGHT  -         72.638 (meters)      238.31  (feet) COMP
 HV0819  MODELED GRAVITY -    980,055.3   (mgal)                       NAVD 88
 HV0819
 HV0819  VERT ORDER      -  FIRST     CLASS II
 HV0819
 HV0819  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0819  Standards:
 HV0819         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0819            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0819  -------------------------------------------------------------------
 HV0819  NETWORK    0.97   1.98           0.37   0.42   1.01     -0.15121854
 HV0819  -------------------------------------------------------------------
 HV0819  Click here for local accuracies and other accuracy information.
 HV0819
 HV0819.The horizontal coordinates were established by GPS observations
 HV0819.and adjusted by the National Geodetic Survey in June 2012.
 HV0819
 HV0819.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0819.been affixed to the stable North American tectonic plate. See 
 HV0819.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0819
 HV0819.The horizontal coordinates are valid at the epoch date displayed above
 HV0819.which is a decimal equivalence of Year/Month/Day.
 HV0819
 HV0819.The orthometric height was determined by differential leveling and
 HV0819.adjusted by the NATIONAL GEODETIC SURVEY
 HV0819.in June 1991.
 HV0819
 HV0819.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0819.GEOID18 height accuracy estimate available here.
 HV0819
 HV0819.Click photographs - Photos may exist for this station.
 HV0819
 HV0819.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0819
 HV0819.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0819
 HV0819.The ellipsoidal height was determined by GPS observations
 HV0819.and is referenced to NAD 83.
 HV0819
 HV0819.The dynamic height is computed by dividing the NAVD 88
 HV0819.geopotential number by the normal gravity value computed on the
 HV0819.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0819.degrees latitude (g = 980.6199 gals.).
 HV0819
 HV0819.The modeled gravity was interpolated from observed gravity values.
 HV0819
 HV0819. The following values were computed from the NAD 83(2011) position.
 HV0819
 HV0819;                    North         East     Units Scale Factor Converg.
 HV0819;SPC MD       -   118,958.944   414,705.384   MT  0.99995272   +0 06 22.2
 HV0819;SPC MD       -   390,284.47  1,360,579.25   sFT  0.99995272   +0 06 22.2
 HV0819;UTM  18      - 4,289,317.123   340,874.396   MT  0.99991181   -1 08 45.3
 HV0819
 HV0819!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0819!SPC MD       -   0.99999373  x   0.99995272  =   0.99994645
 HV0819!UTM  18      -   0.99999373  x   0.99991181  =   0.99990555
 HV0819
 HV0819:                Primary Azimuth Mark                     Grid Az
 HV0819:SPC MD       -  CHELTENHAM NAVAL RAD STA E TK            303 15 53.9
 HV0819:UTM  18      -  CHELTENHAM NAVAL RAD STA E TK            304 31 01.4
 HV0819
 HV0819_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4087489317(NAD 83)
 HV0819
 HV0819|---------------------------------------------------------------------|
 HV0819| PID    Reference Object                     Distance      Geod. Az  |
 HV0819|                                                           dddmmss.s |
 HV0819| HV7385 CHELTENHAM                           34.191 METERS 12044     |
 HV0819| HV7384 CHELTENHAM 2 RM 5                    27.832 METERS 13955     |
 HV0819| HV0821 CHELTENHAM 2 RM 3                    18.684 METERS 23501     |
 HV0819| HV7389 CHELTENHAM NAVAL RAD STA W TK       APPROX. 2.6 KM 3004411.9 |
 HV0819| HV7507 CHELTENHAM NAVAL RAD TWR            APPROX. 2.8 KM 3031210.6 |
 HV0819| HV7390 CHELTENHAM NAVAL RAD STA E TK       APPROX. 2.4 KM 3032216.1 |
 HV0819| HV0820 CHELTENHAM 2 RM 4                    21.359 METERS 32057     |
 HV0819|---------------------------------------------------------------------|
 HV0819
 HV0819                          SUPERSEDED SURVEY CONTROL
 HV0819
 HV0819  NAD 83(2007)-  38 44 17.54865(N)    076 49 51.08718(W) AD(2002.00) 0
 HV0819  ELLIP H (02/10/07)   39.841  (m)                       GP(2002.00)    
 HV0819  ELLIP H (08/30/02)   39.843  (m)                       GP(       ) 4 2
 HV0819  NAD 83(1993)-  38 44 17.54851(N)    076 49 51.08732(W) AD(       ) 1
 HV0819  ELLIP H (11/14/94)   39.889  (m)                       GP(       ) 4 2
 HV0819  ELLIP H (09/09/94)   39.856  (m)                       GP(       ) 4 1
 HV0819  NAD 83(1991)-  38 44 17.54833(N)    076 49 51.08788(W) AD(       ) 1
 HV0819  NAD 83(1991)-  38 44 17.54850(N)    076 49 51.08732(W) AD(       ) 2
 HV0819  ELLIP H (01/27/92)   40.225  (m)                       GP(       ) 4 1
 HV0819  NAD 83(1986)-  38 44 17.54628(N)    076 49 51.10203(W) AD(       ) 2
 HV0819  NAD 27      -  38 44 17.13146(N)    076 49 52.20813(W) AD(       ) 2
 HV0819  NAVD 88              72.68   (m)          238.5    (f) LEVELING    3  
 HV0819  NGVD 29              72.91   (m)          239.2    (f) LEVELING    3  
 HV0819  NGVD 29 (11/26/84)   72.911  (m)          239.21   (f) ADJUSTED    1 2
 HV0819
 HV0819.Superseded values are not recommended for survey control.
 HV0819
 HV0819.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0819.See file dsdata.pdf to determine how the superseded data were derived.
 HV0819
 HV0819_MARKER: DS = TRIANGULATION STATION DISK
 HV0819_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0819_STAMPING: CHELTENHAM 2 1968
 HV0819_MARK LOGO: CGS
 HV0819_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0819_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0819+STABILITY: SURFACE MOTION
 HV0819_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0819+SATELLITE: SATELLITE OBSERVATIONS - March 19, 2001
 HV0819
 HV0819  HISTORY     - Date     Condition        Report By
 HV0819  HISTORY     - 1968     MONUMENTED       CGS
 HV0819  HISTORY     - 1970     GOOD             NGS
 HV0819  HISTORY     - 1971     GOOD             NGS
 HV0819  HISTORY     - 1971     GOOD             NGS
 HV0819  HISTORY     - 1975     GOOD             NGS
 HV0819  HISTORY     - 19880601 GOOD             NGS
 HV0819  HISTORY     - 19930331 GOOD             MSI
 HV0819  HISTORY     - 20010202 GOOD             DMW
 HV0819  HISTORY     - 20010319 GOOD             CHANCE
 HV0819
 HV0819                          STATION DESCRIPTION
 HV0819
 HV0819'DESCRIBED BY COAST AND GEODETIC SURVEY 1968 (JCB)
 HV0819'STATION IS LOCATED ABOUT 3-1/2 MILES NORTHEAST OF T.B. AND 1/4
 HV0819'MILE WEST OF CHELTENHAM AT THE ENTRANCE TO MARYLAND BOYS
 HV0819'HOME.  STATION IS 72 FEET EAST OF UTILITY POLE NUMBER 872982,
 HV0819'46 FEET WEST NORTHWEST OF ENTRANCE TO BOYS HOME, 36 FEET SOUTH
 HV0819'SOUTHWEST OF CENTERLINE OF BLACKTOP ROAD AND .8 FOOT WEST OF
 HV0819'STEEL WITNESS POST.  THE MARK IS A STANDARD DISK SET FLUSH IN A
 HV0819'CONCRETE MONUMENT ABOUT 10 INCHES IN DIAMETER, PROJECTS ABOUT 3
 HV0819'INCHES AND THE DISK IS STAMPED CHELTENHAM 2 1968.
 HV0819'
 HV0819'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND STATE
 HV0819'HIGHWAY 5 IN T.B. GO NORTHEASTERLY ON U.S. HIGHWAY 301 FOR 3.85
 HV0819'MILES TO A CROSSROAD.  TURN LEFT AND GO WESTERLY FOR 0.25 MILE
 HV0819'TO ENTRANCE TO BOYS HOME AND STATION ON LEFT AS DESCRIBED.
 HV0819'
 HV0819'REFERENCE MARK NO. 3 IS 40 FEET NORTH OF ENTRANCE ROAD AND 8
 HV0819'FEET NORTHWEST OF A LARGE OAK TREE, THE MOST EASTERLY ONE IN A
 HV0819'ROW.  THE MARK IS A STANDARD DISK SET FLUSH IN THE TOP OF A
 HV0819'CONCRETE MONUMENT ABOUT 10 INCHES IN DIAMETER, PROJECTS ABOUT 1
 HV0819'INCH AND THE DISK IS STAMPED CHELTENHAM 2 NO 3 1968.
 HV0819'
 HV0819'REFERENCE MARK NO. 4 IS 21 FEET SOUTH SOUTHWEST OF CENTERLINE OF
 HV0819'BLACK TOP ROAD, 7.5 FEET SOUTH SOUTHWEST OF UTILITY POLE NUMBER
 HV0819'872982 AND UNDER POLE GUY WIRE.  THE MARK IS A STANDARD DISK SET
 HV0819'FLUSH IN A CONCRETE MONUMENT ABOUT 10 INCHES IN DIAMETER,
 HV0819'PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED CHELTENHAM 2
 HV0819'NO 4 1968.
 HV0819
 HV0819                          STATION RECOVERY (1970)
 HV0819
 HV0819'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV0819'THE STATION MARK, REFERENCE MARKS 3 AND 4 WERE RECOVERED.  DUE
 HV0819'TO CHANGES IN THE IMMEDIATE AREA, A TOWER COULD NOT BE ERECTED
 HV0819'OVER THE STATION.  REFERENCE MARK 5, WITH AN UNDERGROUND MARK WAS
 HV0819'ESTABLISHED AND OCCUPIED.  CHELTENHAM 1943 WAS SEARCHED FOR AND
 HV0819'COULD NOT BE FOUND.  DUE TO LOCAL CHANGES IN THE AREA, A NEW
 HV0819'COMPLETE DESCRIPTION FOLLOWS.
 HV0819'
 HV0819'THE STATION IS ABOUT 3-1/2 MILES NORTHEAST OF T.B., 1/4 MILE WEST
 HV0819'OF CHELTENHAM AND NEAR THE NORTHEAST ENTRANCE TO THE MARYLAND BOYS
 HV0819'HOME.  R.J. SAULS, SUPERINTENDENT OF THE SCHOOL GAVE PERMISSION.
 HV0819'
 HV0819'TO REACH THE STATION FROM THE POST OFFICE IN CHELTENHAM, GO
 HV0819'WEST ON FRANK TIPPETT ROAD FOR 0.3 MILE TO THE ENTRANCE TO THE
 HV0819'MARYLAND BOYS HOME AND THE STATION ON THE LEFT.
 HV0819'
 HV0819'STATION MARK IS A STANDARD DISK, STAMPED CHELTENHAM 2 1968, SET
 HV0819'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, SET
 HV0819'IN THE BOTTOM OF A CONCRETE MANHOLE, THAT IS ABOUT 4 FEET BELOW
 HV0819'THE GROUND SURFACE.  IT IS 46.0 FEET NORTH OF THE CENTERLINE OF
 HV0819'THE DRIVEWAY TO THE BOYS HOME, 37.0 FEET WEST OF THE CENTERLINE
 HV0819'OF FRANK TIPPETT ROAD AND 1.3 FEET SOUTH-SOUTHWEST OF A WITNESS
 HV0819'POST.
 HV0819'
 HV0819'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED CHELTENHAM 2 NO 3
 HV0819'1968, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 HV0819'DIAMETER, THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 96.0
 HV0819'FEET SOUTHWEST OF THE CENTERLINE OF FRANK TIPPETT ROAD, 40.0
 HV0819'FEET NORTH OF THE CENTERLINE OF DRIVEWAY TO THE BOYS HOME, 34.0
 HV0819'FEET NORTHEAST OF LAMP POST NUMBER CH 62 AND ABOUT THE SAME
 HV0819'ELEVATION AS THE STATION.
 HV0819'
 HV0819'REFERENCE MARK 4 IS A STANDARD DISK, STAMPED CHELTENHAM 2 NO 4
 HV0819'1968, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 HV0819'DIAMETER, THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 32.4
 HV0819'FEET SOUTHWEST OF THE CENTERLINE OF FRANK TIPPETT ROAD, 3.9 FEET
 HV0819'SOUTH OF POWER LINE POLE NUMBER PEP 872982 AND ABOUT THE SAME
 HV0819'ELEVATION AS THE STATION.
 HV0819'
 HV0819'REFERENCE MARK 5 IS A STANDARD DISK, STAMPED CHELTENHAM 2 1968
 HV0819'NO 5 1970, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES
 HV0819'IN DIAMETER, THAT IS 3 INCHES BELOW THE GROUND SURFACE.  IT IS
 HV0819'46.0 FEET SOUTHEAST OF THE CENTERLINE OF THE DRIVEWAY TO THE
 HV0819'BOYS HOME, 43.0 FEET SOUTHWEST OF THE CENTERLINE OF FRANK TIPPETT
 HV0819'ROAD, 12.0 FEET EAST OF THE SOUTHEAST CORNER OF A BRICK WALL.
 HV0819'AN UNDERGROUND MARK WAS SET 42 INCHES BELOW THE GROUND
 HV0819'SURFACE.
 HV0819'
 HV0819'THERE IS NO AZIMUTH MARK FOR THIS STATION.
 HV0819'
 HV0819'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV0819'1/4 MILE WEST OF CHELTENHAM.
 HV0819
 HV0819                          STATION RECOVERY (1971)
 HV0819
 HV0819'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV0819'THE STATION, RM 3, 4 AND 5 WERE ALL RECOVERED AND IN GOOD
 HV0819'CONDITION.  THE STATION MAY BE REACHED BY GOING 0.25 MILE
 HV0819'NORTHWEST ALONG SURRATS ROAD AND FRANK TIPPETT ROAD FROM THE
 HV0819'JUNCTION OF U.S. HIGHWAY 301 AT CHELTENHAM, NEAR THE ENTRANCE
 HV0819'TO THE BOYS VILLAGE OF MARYLAND, 0.05 MILE NORTHWEST OF THE
 HV0819'JUNCTION OF TWO ROADS, 51 FEET NORTHWEST OF THE CENTER LINE OF
 HV0819'THE ENTRANCE ROAD, 36 FEET SOUTHWEST OF THE CENTER LINE OF
 HV0819'FRANK TIPPETT ROAD, 1 FOOT WEST OF A METAL WITNESS POST, SET IN
 HV0819'THE TOP OF A CONCRETE POST 3 FEET BELOW THE LEVEL OF THE
 HV0819'GROUND AND ENCASED IN A METAL PIPE WITH METAL COVER.
 HV0819'
 HV0819'RM 3 IS 61.5 FEET SOUTHWEST OF THE STATION MARK, 77 FEET WEST
 HV0819'OF THE CENTER LINE OF THE ENTRANCE ROAD TO BOY VILLAGE, 40 FEET
 HV0819'NORTH OF THE CENTER LINE OF THE ROAD, 60-1/2 FEET EAST OF A TREE,
 HV0819'2 FEET BELOW THE LEVEL OF THE ROAD, BETWEEN 3 STEEL WITNESS POST,
 HV0819'SET IN THE TOP OF A CONCRETE POST LEVEL WITH THE GROUND.
 HV0819'
 HV0819'RM 4 IS 70.5 FEET NORTHWEST OF THE STATION MARK DESCRIBED, 116
 HV0819'FEET NORTH OF THE CENTER LINE OF THE ENTRANCE ROAD.  36 FEET
 HV0819'SOUTHWEST OF THE CENTER LINE OF THE FRANK TIPPETT ROAD, 5 FEET
 HV0819'SOUTH OF POWER LINE POLE 872982, PROTECTED BY 3 STEEL WITNESS
 HV0819'POST PAINTED YELLOW WITH PLATES ATTACHED, 3 INCHES ABOVE THE
 HV0819'LEVEL OF THE ROAD AND SET IN THE TOP OF A CONCRETE POST
 HV0819'PROJECTING 11 INCHES ABOVE THE LEVEL OF THE GROUND.
 HV0819'
 HV0819'RM 5 (AZ) IS ABOUT 0.1 MILE NORTHWEST ALONG SURRATTS ROAD FROM
 HV0819'THE JUNCTION OF U.S. HIGHWAY 301 AT CHELTENHAM, ABOUT 0.15 MILE
 HV0819'NORTHWEST OF BM B 1 DESCRIBED, 31 FEET NORTHEAST OF THE CENTER
 HV0819'LINE OF SURRATTS ROAD, 89-1/2 FEET WEST OF THE WEST CORNER OF A
 HV0819'WAREHOUSE, ABOUT 250 FEET NORTHWEST OF THE CENTER LINE OF THE
 HV0819'SOUTHBOUND LANE OF U.S. HIGHWAY 301, 1-1/2 FEET NORTHWEST OF
 HV0819'POWER LINE POLE 872444, 1.5 FEET SOUTHEAST OF A METAL WITNESS
 HV0819'POST, SET IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES
 HV0819'ABOVE THE LEVEL OF THE GROUND.
 HV0819'
 HV0819'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV0819'0.25 MILE NORTHWEST.
 HV0819
 HV0819                          STATION RECOVERY (1971)
 HV0819
 HV0819'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0819'0.2 MI NW FROM CHELTENHAM.
 HV0819'ABOUT 0.25 MILE NORTHWEST ALONG SURRATS ROAD AND FRANK TIPPETT
 HV0819'ROAD FROM THE JUNCTION OF U.S. HIGHWAY 301 AT CHELTENHAM, NEAR
 HV0819'THE ENTRANCE TO THE BOYS VILLAGE OF MARYLAND, 0.05 MILE NORTHWEST
 HV0819'OF THE JUNCTION OF THE TWO ROADS, 51 FEET NORTHWEST OF THE CENTER
 HV0819'LINE OF THE ENTRANCE ROAD TO BOYS VILLAGE OF MARYLAND, 36 FEET
 HV0819'SOUTHWEST OF THE CENTER LINE OF FRANK TIPPETT ROAD, 61.5 FEET
 HV0819'NORTHEAST OF RM 3 DESCRIBED, 70.5 FEET SOUTHEAST OF RM 4 DESCRIBED,
 HV0819'1 FOOT WEST OF A METAL WITNESS POST, SET IN THE TOP OF A CONCRETE
 HV0819'POST 3 FEET BELOW THE LEVEL OF THE GROUND AND ENCASED IN A METAL
 HV0819'PIPE WITH METAL COVER.
 HV0819
 HV0819                          STATION RECOVERY (1975)
 HV0819
 HV0819'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0819'RECOVERED IN GOOD CONDITION.
 HV0819
 HV0819                          STATION RECOVERY (1988)
 HV0819
 HV0819'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HV0819'RECOVERED IN GOOD CONDITION.
 HV0819
 HV0819                          STATION RECOVERY (1993)
 HV0819
 HV0819'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV0819'RECOVERED IN GOOD CONDITION.
 HV0819
 HV0819                          STATION RECOVERY (2001)
 HV0819
 HV0819'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 HV0819'RECOVERY NOTE
 HV0819'STATION FOUND IN GOOD CONDITION 2/2001
 HV0819
 HV0819                          STATION RECOVERY (2001)
 HV0819
 HV0819'RECOVERY NOTE BY JE CHANCE AND ASSOCIATES 2001 (CLG)
 HV0819'CORRECTION- NOT A METAL PIPE.  VERTICAL CONCRETE CULVERT WITH A METAL
 HV0819'MANHOLE COVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0821 ***********************************************************************
 HV0821  DESIGNATION -  CHELTENHAM 2 RM 3
 HV0821  PID         -  HV0821
 HV0821  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0821  COUNTRY     -  US
 HV0821  USGS QUAD   -  BRANDYWINE (2016)
 HV0821
 HV0821                         *CURRENT SURVEY CONTROL
 HV0821  ______________________________________________________________________
 HV0821* NAD 83(1986) POSITION- 38 44 17.20   (N) 076 49 51.72   (W)   HD_HELD1
 HV0821* NAVD 88 ORTHO HEIGHT -    72.453 (meters)      237.71  (feet) ADJUSTED
 HV0821  ______________________________________________________________________
 HV0821  GEOID HEIGHT    -        -32.842 (meters)                     GEOID18
 HV0821  DYNAMIC HEIGHT  -         72.411 (meters)      237.57  (feet) COMP
 HV0821  MODELED GRAVITY -    980,055.2   (mgal)                       NAVD 88
 HV0821
 HV0821  VERT ORDER      -  FIRST     CLASS II
 HV0821
 HV0821.The horizontal coordinates were determined by differentially corrected
 HV0821.hand held GPS observations or other comparable positioning techniques
 HV0821.and have an estimated accuracy of +/- 3 meters.
 HV0821
 HV0821.The orthometric height was determined by differential leveling and
 HV0821.adjusted by the NATIONAL GEODETIC SURVEY
 HV0821.in June 1991.
 HV0821
 HV0821.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0821.GEOID18 height accuracy estimate available here.
 HV0821
 HV0821.Click photographs - Photos may exist for this station.
 HV0821
 HV0821.The dynamic height is computed by dividing the NAVD 88
 HV0821.geopotential number by the normal gravity value computed on the
 HV0821.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0821.degrees latitude (g = 980.6199 gals.).
 HV0821
 HV0821.The modeled gravity was interpolated from observed gravity values.
 HV0821
 HV0821;                    North         East    Units  Estimated Accuracy
 HV0821;SPC MD       -   118,948.2     414,690.1     MT  (+/- 3 meters HH1 GPS) 
 HV0821
 HV0821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4085889306(NAD 83)
 HV0821
 HV0821                          SUPERSEDED SURVEY CONTROL
 HV0821
 HV0821  NGVD 29 (11/26/84)   72.684  (m)          238.46   (f) ADJUSTED    1 2
 HV0821
 HV0821.Superseded values are not recommended for survey control.
 HV0821
 HV0821.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0821.See file dsdata.pdf to determine how the superseded data were derived.
 HV0821
 HV0821_MARKER: DR = REFERENCE MARK DISK
 HV0821_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0821_STAMPING: CHELTENHAM 2 NO 3 1968
 HV0821_MARK LOGO: CGS
 HV0821_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0821+STABILITY: SURFACE MOTION
 HV0821_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0821+SATELLITE: SATELLITE OBSERVATIONS - August 16, 2004
 HV0821
 HV0821  HISTORY     - Date     Condition        Report By
 HV0821  HISTORY     - 1968     MONUMENTED       CGS
 HV0821  HISTORY     - 1971     GOOD             NGS
 HV0821  HISTORY     - 1975     GOOD             NGS
 HV0821  HISTORY     - 20010202 GOOD             DMW
 HV0821  HISTORY     - 20040816 GOOD             GEOCAC
 HV0821
 HV0821                          STATION DESCRIPTION
 HV0821
 HV0821'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0821'0.3 MI NW FROM CHELTENHAM.
 HV0821'ABOUT 0.3 MILE NORTHWEST ALONG FRANK TIPPETT ROAD FROM THE JUNCTION
 HV0821'OF U.S. HIGHWAY 301 AT CHELTENHAM, NEAR THE ENTRANCE TO THE BOYS
 HV0821'VILLAGE OF MARYLAND, 77 FEET WEST OF THE CENTER LINE OF THE
 HV0821'ENTRANCE ROAD TO THE BOYS VILLAGE, 40 FEET NORTH OF THE CENTER
 HV0821'LINE OF THE ROAD, 60 1/2 FEET EAST OF A TREE, 2 FEET BELOW THE
 HV0821'LEVEL OF THE ROAD, BETWEEN 3 STEEL WITNESS POST, SET IN THE TOP
 HV0821'OF A CONCRETE POST LEVEL WITH THE GROUND.
 HV0821
 HV0821                          STATION RECOVERY (1975)
 HV0821
 HV0821'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0821'RECOVERED IN GOOD CONDITION.
 HV0821
 HV0821                          STATION RECOVERY (2001)
 HV0821
 HV0821'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 HV0821'RECOVERED IN GOOD CONDITION.
 HV0821
 HV0821                          STATION RECOVERY (2004)
 HV0821
 HV0821'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV0821'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0820 ***********************************************************************
 HV0820  DESIGNATION -  CHELTENHAM 2 RM 4
 HV0820  PID         -  HV0820
 HV0820  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0820  COUNTRY     -  US
 HV0820  USGS QUAD   -  BRANDYWINE (2016)
 HV0820
 HV0820                         *CURRENT SURVEY CONTROL
 HV0820  ______________________________________________________________________
 HV0820* NAD 83(1986) POSITION- 38 44 18.09   (N) 076 49 51.64   (W)   HD_HELD1
 HV0820* NAVD 88 ORTHO HEIGHT -    72.843 (meters)      238.99  (feet) ADJUSTED
 HV0820  ______________________________________________________________________
 HV0820  GEOID HEIGHT    -        -32.842 (meters)                     GEOID18
 HV0820  DYNAMIC HEIGHT  -         72.802 (meters)      238.85  (feet) COMP
 HV0820  MODELED GRAVITY -    980,055.4   (mgal)                       NAVD 88
 HV0820
 HV0820  VERT ORDER      -  FIRST     CLASS II
 HV0820
 HV0820.The horizontal coordinates were determined by differentially corrected
 HV0820.hand held GPS observations or other comparable positioning techniques
 HV0820.and have an estimated accuracy of +/- 3 meters.
 HV0820
 HV0820.The orthometric height was determined by differential leveling and
 HV0820.adjusted by the NATIONAL GEODETIC SURVEY
 HV0820.in June 1991.
 HV0820
 HV0820.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0820.GEOID18 height accuracy estimate available here.
 HV0820
 HV0820.Click photographs - Photos may exist for this station.
 HV0820
 HV0820.The dynamic height is computed by dividing the NAVD 88
 HV0820.geopotential number by the normal gravity value computed on the
 HV0820.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0820.degrees latitude (g = 980.6199 gals.).
 HV0820
 HV0820.The modeled gravity was interpolated from observed gravity values.
 HV0820
 HV0820;                    North         East    Units  Estimated Accuracy
 HV0820;SPC MD       -   118,975.6     414,692.0     MT  (+/- 3 meters HH1 GPS) 
 HV0820
 HV0820_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4086189334(NAD 83)
 HV0820
 HV0820                          SUPERSEDED SURVEY CONTROL
 HV0820
 HV0820  NGVD 29 (11/26/84)   73.075  (m)          239.75   (f) ADJUSTED    1 2
 HV0820
 HV0820.Superseded values are not recommended for survey control.
 HV0820
 HV0820.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0820.See file dsdata.pdf to determine how the superseded data were derived.
 HV0820
 HV0820_MARKER: DR = REFERENCE MARK DISK
 HV0820_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0820_STAMPING: CHELTENHAM 2 NO 4 1968
 HV0820_MARK LOGO: CGS
 HV0820_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0820+STABILITY: SURFACE MOTION
 HV0820
 HV0820  HISTORY     - Date     Condition        Report By
 HV0820  HISTORY     - 1968     MONUMENTED       CGS
 HV0820  HISTORY     - 1971     GOOD             NGS
 HV0820  HISTORY     - 1975     GOOD             NGS
 HV0820
 HV0820                          STATION DESCRIPTION
 HV0820
 HV0820'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0820'0.3 MI NW FROM CHELTENHAM.
 HV0820'ABOUT 0.3 MILE NORTHWEST ALONG THE FRANK TIPPETT ROAD FROM THE
 HV0820'JUNCTION OF U.S. HIGHWAY 301 AT CHELTEHAM, NEAR THE ENTRANCE TO
 HV0820'THE BOYS VILLAGE OF MARYLAND, 116 FEET NORTH OF THE CENTER LINE
 HV0820'OF THE ENTRANCE ROAD TO THE BOYS VILLAGE, 36 FEET SOUTHWEST OF
 HV0820'THE CENTER LINE OF FRANK TIPPETT ROAD, 5 FEET SOUTH OF POWER
 HV0820'LINE POLE NO. 872982, PROTECTED BY 3 STEEL WITNESS POST WITH
 HV0820'YELLOW PLATES ATTACHED, 3 INCHES ABOVE THE LEVEL OF THE ROAD
 HV0820'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 11 INCHES ABOVE
 HV0820'THE LEVEL OF THE GROUND.
 HV0820
 HV0820                          STATION RECOVERY (1975)
 HV0820
 HV0820'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0820'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7384 ***********************************************************************
 HV7384  DESIGNATION -  CHELTENHAM 2 RM 5
 HV7384  PID         -  HV7384
 HV7384  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7384  COUNTRY     -  US
 HV7384  USGS QUAD   -  BRANDYWINE (2016)
 HV7384
 HV7384                         *CURRENT SURVEY CONTROL
 HV7384  ______________________________________________________________________
 HV7384* NAD 83(1991) POSITION- 38 44 16.85813(N) 076 49 50.34542(W)   ADJUSTED
 HV7384* NAVD 88 ORTHO HEIGHT -    73.75  (+/-2cm)      242.0   (feet) VERTCON3
 HV7384  ______________________________________________________________________
 HV7384  GEOID HEIGHT    -        -32.844 (meters)                     GEOID18
 HV7384  LAPLACE CORR    -         -5.98  (seconds)                    DEFLEC18
 HV7384  HORZ ORDER      -  FIRST
 HV7384  VERT ORDER      -  THIRD ? (See Below)
 HV7384
 HV7384.The horizontal coordinates were established by classical geodetic methods
 HV7384.and adjusted by the National Geodetic Survey in January 1992.
 HV7384
 HV7384.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7384.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7384
 HV7384.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7384.GEOID18 height accuracy estimate available here.
 HV7384
 HV7384.The vertical order pertains to the NGVD 29 superseded value.
 HV7384
 HV7384.Click photographs - Photos may exist for this station.
 HV7384
 HV7384.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7384
 HV7384. The following values were computed from the NAD 83(1991) position.
 HV7384
 HV7384;                    North         East     Units Scale Factor Converg.
 HV7384;SPC MD       -   118,937.689   414,723.291   MT  0.99995273   +0 06 22.6
 HV7384;SPC MD       -   390,214.73  1,360,638.00   sFT  0.99995273   +0 06 22.6
 HV7384;UTM  18      - 4,289,295.483   340,891.834   MT  0.99991175   -1 08 44.8
 HV7384
 HV7384!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7384!SPC MD       -   0.99999358  x   0.99995273  =   0.99994631
 HV7384!UTM  18      -   0.99999358  x   0.99991175  =   0.99990533
 HV7384
 HV7384:                Primary Azimuth Mark                     Grid Az
 HV7384:SPC MD       -  CHELTENHAM 2 AZ MK                       121 56 47.2
 HV7384:UTM  18      -  CHELTENHAM 2 AZ MK                       123 11 54.6
 HV7384
 HV7384_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4089189295(NAD 83)
 HV7384
 HV7384|---------------------------------------------------------------------|
 HV7384| PID    Reference Object                     Distance      Geod. Az  |
 HV7384|                                                           dddmmss.s |
 HV7384| HV7386 CHELTENHAM ST FISH COMM MAST        APPROX. 0.9 KM 0902059.7 |
 HV7384| CX2225 CHELTENHAM 2 AZ MK                                 1220309.8 |
 HV7384| HV7394 BRANDYWINE USAF TANK                APPROX. 6.7 KM 1893753.9 |
 HV7384| HV7395 BRANDYWINE STATE FOREST LOT         APPROX. 4.6 KM 1911339.0 |
 HV7384| HV7381 CHELTENHAM REFORM SCHOOL TANK       APPROX. 0.8 KM 2505318.5 |
 HV7384| HV0821 CHELTENHAM 2 RM 3                                  28740     |
 HV7384| HV7389 CHELTENHAM NAVAL RAD STA W TK       APPROX. 2.6 KM 3005615.8 |
 HV7384| HV7507 CHELTENHAM NAVAL RAD TWR            APPROX. 2.8 KM 3032155.0 |
 HV7384| HV7390 CHELTENHAM NAVAL RAD STA E TK       APPROX. 2.4 KM 3033337.5 |
 HV7384| HV0819 CHELTENHAM 2                         27.832 METERS 31955     |
 HV7384| HV0820 CHELTENHAM 2 RM 4                                  32022     |
 HV7384|---------------------------------------------------------------------|
 HV7384
 HV7384                          SUPERSEDED SURVEY CONTROL
 HV7384
 HV7384  NAD 83(1986)-  38 44 16.85575(N)    076 49 50.35994(W) AD(       ) 1
 HV7384  NAD 27      -  38 44 16.44108(N)    076 49 51.46626(W) AD(       ) 1
 HV7384  NGVD 29              73.98   (m)          242.7    (f) LEVELING    3  
 HV7384
 HV7384.Superseded values are not recommended for survey control.
 HV7384
 HV7384.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7384.See file dsdata.pdf to determine how the superseded data were derived.
 HV7384
 HV7384_MARKER: DR = REFERENCE MARK DISK
 HV7384_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7384_STAMPING: CHELTENHAM 2 1968 NO 5 1970
 HV7384_MARK LOGO: CGS
 HV7384_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7384+STABILITY: SURFACE MOTION
 HV7384
 HV7384  HISTORY     - Date     Condition        Report By
 HV7384  HISTORY     - 1970     MONUMENTED       NGS
 HV7384
 HV7384                          STATION DESCRIPTION
 HV7384
 HV7384'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7384'THE STATION IS ABOUT 3-1/2 MILES NORTHEAST OF T.B., 1/4 MILE
 HV7384'WEST OF CHELTENHAM, NEAR THE NORTHEAST ENTRANCE TO THE MARYLAND
 HV7384'BOYS HOME.  R.J. SAULS, SUPERINTENDENT OF THE SCHOOL GAVE
 HV7384'PERMISSION.
 HV7384'
 HV7384'TO REACH THE STATION FROM THE POST OFFICE IN CHELTENHAM, GO WEST
 HV7384'ON FRANK TIPPETT ROAD FOR 0.05 MILE TO THE AZIMUTH MARK ON THE
 HV7384'RIGHT.  CONTINUE WEST ON FRANK TIPPETT ROAD FOR 0.25 MILE TO
 HV7384'THE ENTRANCE TO THE BOYS HOME AND THE STATION ON THE LEFT.
 HV7384'
 HV7384'STATION MARK IS A STANDARD REFERENCE MARK DISK, STAMPED
 HV7384'CHELTENHAM 2 1968 NO 5 1970, SET IN THE TOP OF A ROUND CONCRETE
 HV7384'POST, 12 INCHES IN DIAMETER, THAT IS 3 INCHES BELOW THE GROUND
 HV7384'SURFACE.  IT IS 46.0 FEET SOUTHEAST OF THE CENTERLINE OF THE
 HV7384'DRIVEWAY TO THE BOYS HOME, 43.0 FEET SOUTHWEST OF THE CENTERLINE
 HV7384'OF FRANK TIPPETT ROAD AND 12.0 FEET EAST OF THE SOUTHEAST CORNER
 HV7384'OF A BRICK WALL.  THE UNDERGROUND MARK IS 42 INCHES BELOW THE
 HV7384'GROUND SURFACE.
 HV7384'
 HV7384'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED CHELTENHAM 2 NO 3
 HV7384'1968, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 HV7384'DIAMETER, THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 96.0 FEET
 HV7384'SOUTHWEST OF THE CENTERLINE OF FRANK TIPPETT ROAD, 40.0 FEET
 HV7384'NORTH OF THE CENTERLINE OF THE DRIVEWAY TO THE BOYS HOME, 34.0
 HV7384'FEET NORTHEAST OF LAMP POST NUMBER CH 62 AND IS ABOUT 3 FEET
 HV7384'LOWER THAN THE STATION.
 HV7384'
 HV7384'REFERENCE MARK 4 IS A STANDARD DISK, STAMPED CHELTENHAM 2 NO 4
 HV7384'1968, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 HV7384'DIAMETER, THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 32.4 FEET
 HV7384'SOUTHWEST OF THE CENTERLINE OF FRANK TIPPETT ROAD, 3.9 FEET SOUTH
 HV7384'OF POWER LINE POLE NUMBER PEP 872982 AND IS ABOUT 3 FEET LOWER
 HV7384'THAN THE STATION.
 HV7384'
 HV7384'CHELTENHAM 2 1968 IS A STANDARD DISK, STAMPED CHELTENHAM 2
 HV7384'1968, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 HV7384'DIAMETER, THAT IS ABOUT 4 FEET BELOW THE GROUND IN A CONCRETE
 HV7384'MANHOLE.  IT IS 46.0 FEET NORTH OF THE CENTERLINE OF THE DRIVEWAY
 HV7384'TO THE BOYS HOME, 37.0 FEET WEST OF THE CENTERLINE OF FRANK
 HV7384'TIPPETT ROAD, 1.3 FEET SOUTH-SOUTHWEST OF A WITNESS POST.
 HV7384'
 HV7384'AZIMUTH MARK IS A STANDARD DISK, STAMPED CHELTENHAM 2 RM 5
 HV7384'1968 1970, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 HV7384'DIAMETER, THAT PROJECTS 6 INCHES ABOVE THE GROUND.  IT IS
 HV7384'33.0 FEET NORTHEAST OF THE CENTERLINE OF FRANK TIPPETT ROAD, 1.6
 HV7384'FEET NORTH-NORTHWEST OF POWER LINE POLE NUMBER PEP 872444 AND
 HV7384'1.5 FEET SOUTHEAST OF A WITNESS POST.
 HV7384'
 HV7384'REFERENCE MARK 3 COULD NOT BE MEASURED DUE TO OBSTRUCTIONS.
 HV7384'
 HV7384'CHELTENHAM 2 1968 TO REFERENCE MARK 3,61.30 FEET, 18.684 METERS.
 HV7384'
 HV7384'CHELTENHAM 2 1968 TO REFERENCE MARK 4,70.08 FEET, 21.359 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0818 ***********************************************************************
 HV0818  DESIGNATION -  CHELTENHAM 2 RM 5 AZ MK
 HV0818  PID         -  HV0818
 HV0818  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0818  COUNTRY     -  US
 HV0818  USGS QUAD   -  BRANDYWINE (2016)
 HV0818
 HV0818                         *CURRENT SURVEY CONTROL
 HV0818  ______________________________________________________________________
 HV0818* NAD 83(1986) POSITION- 38 44 09.3    (N) 076 49 34.6    (W)   HD_HELD2
 HV0818* NAVD 88 ORTHO HEIGHT -    73.747 (meters)      241.95  (feet) ADJUSTED
 HV0818  ______________________________________________________________________
 HV0818  GEOID HEIGHT    -        -32.863 (meters)                     GEOID18
 HV0818  DYNAMIC HEIGHT  -         73.705 (meters)      241.81  (feet) COMP
 HV0818  MODELED GRAVITY -    980,054.3   (mgal)                       NAVD 88
 HV0818
 HV0818  VERT ORDER      -  FIRST     CLASS II
 HV0818
 HV0818.The horizontal coordinates were established by autonomous hand held GPS
 HV0818.observations and have an estimated accuracy of +/- 10 meters.
 HV0818
 HV0818.The orthometric height was determined by differential leveling and
 HV0818.adjusted by the NATIONAL GEODETIC SURVEY
 HV0818.in June 1991.
 HV0818
 HV0818.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0818.GEOID18 height accuracy estimate available here.
 HV0818
 HV0818.Click photographs - Photos may exist for this station.
 HV0818
 HV0818.The dynamic height is computed by dividing the NAVD 88
 HV0818.geopotential number by the normal gravity value computed on the
 HV0818.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0818.degrees latitude (g = 980.6199 gals.).
 HV0818
 HV0818.The modeled gravity was interpolated from observed gravity values.
 HV0818
 HV0818;                    North         East    Units  Estimated Accuracy
 HV0818;SPC MD       -   118,705.      415,104.      MT  (+/- 10 meters HH2 GPS)
 HV0818
 HV0818_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4126789054(NAD 83)
 HV0818
 HV0818                          SUPERSEDED SURVEY CONTROL
 HV0818
 HV0818  NGVD 29 (11/26/84)   73.978  (m)          242.71   (f) ADJUSTED    1 2
 HV0818
 HV0818.Superseded values are not recommended for survey control.
 HV0818
 HV0818.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0818.See file dsdata.pdf to determine how the superseded data were derived.
 HV0818
 HV0818_MARKER: DZ = AZIMUTH MARK DISK
 HV0818_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0818_STAMPING: CHELTENHAM 2 RM 5 1968 1970
 HV0818_MARK LOGO: CGS
 HV0818_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0818+STABILITY: SURFACE MOTION
 HV0818_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0818+SATELLITE: SATELLITE OBSERVATIONS - August 16, 2004
 HV0818
 HV0818  HISTORY     - Date     Condition        Report By
 HV0818  HISTORY     - 1970     MONUMENTED       NGS
 HV0818  HISTORY     - 1971     GOOD             NGS
 HV0818  HISTORY     - 1975     GOOD             NGS
 HV0818  HISTORY     - 20040816 GOOD             GEOCAC
 HV0818
 HV0818                          STATION DESCRIPTION
 HV0818
 HV0818'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0818'AT CHELTENHAM.
 HV0818'AT CHELTENHAM, ABOUT 0.1 MILE NORTHWEST ALONG SURRATTS ROAD FROM
 HV0818'THE JUNCTION OF U.S. HIGHWAY 301, ABOUT 0.15 MILE NORTHWEST OF
 HV0818'BM B 1 DESCRIBED, 31 FEET NORTHEAST OF THE CENTER LINE OF SURRATTS
 HV0818'ROAD, 89 1/2 FEET WEST OF THE WEST CORNER OF A WAREHOUSE, ABOUT
 HV0818'250 FEET NORTHWEST OF THE CENTER LINE OF THE SOUTHBOUND LANE OF
 HV0818'U.S. HIGHWAY 301, 1 1/2 FEET NORTHWEST OF POWER LINE POLE 872444,
 HV0818'1.5 FEET SOUTHEAST OF A METAL WITNESS POST, 1 FOOT ABOVE THE
 HV0818'LEVEL OF THE ROAD AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 HV0818'6 INCHES ABOVE THE LEVEL OF THE GROUND.
 HV0818
 HV0818                          STATION RECOVERY (1975)
 HV0818
 HV0818'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0818'RECOVERED IN GOOD CONDITION.
 HV0818
 HV0818                          STATION RECOVERY (2004)
 HV0818
 HV0818'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV0818'THE UTILITY POLE IS NOW NUMBERED 849328-467 AND IT SUPPORTS A CONTROL
 HV0818'BOX NUMBERED 14240CBA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7389 ***********************************************************************
 HV7389  DESIGNATION -  CHELTENHAM NAVAL RAD STA W TK
 HV7389  PID         -  HV7389
 HV7389  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7389  COUNTRY     -  US
 HV7389  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7389
 HV7389                         *CURRENT SURVEY CONTROL
 HV7389  ______________________________________________________________________
 HV7389* NAD 83(1991) POSITION- 38 45 00.30661(N) 076 51 22.93664(W)   ADJUSTED
 HV7389  ______________________________________________________________________
 HV7389  GEOID HEIGHT    -        -32.734 (meters)                     GEOID18
 HV7389  LAPLACE CORR    -         -5.88  (seconds)                    DEFLEC18
 HV7389  HORZ ORDER      -  THIRD
 HV7389
 HV7389.The horizontal coordinates were established by classical geodetic methods
 HV7389.and adjusted by the National Geodetic Survey in January 1992.
 HV7389
 HV7389.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7389.GEOID18 height accuracy estimate available here.
 HV7389
 HV7389.Click photographs - Photos may exist for this station.
 HV7389
 HV7389.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7389
 HV7389. The following values were computed from the NAD 83(1991) position.
 HV7389
 HV7389;                    North         East     Units Scale Factor Converg.
 HV7389;SPC MD       -   120,273.580   412,485.087   MT  0.99995224   +0 05 24.5
 HV7389;SPC MD       -   394,597.57  1,353,294.82   sFT  0.99995224   +0 05 24.5
 HV7389;UTM  18      - 4,290,679.917   338,683.439   MT  0.99992046   -1 09 43.9
 HV7389
 HV7389_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3868390679(NAD 83)
 HV7389
 HV7389                          SUPERSEDED SURVEY CONTROL
 HV7389
 HV7389  NAD 83(1986)-  38 45 00.30448(N)    076 51 22.95088(W) AD(       ) 3
 HV7389  NAD 27      -  38 44 59.89081(N)    076 51 24.05409(W) AD(       ) 3
 HV7389
 HV7389.Superseded values are not recommended for survey control.
 HV7389
 HV7389.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7389.See file dsdata.pdf to determine how the superseded data were derived.
 HV7389
 HV7389_MARKER: 53 = ELEVATED TANK
 HV7389
 HV7389  HISTORY     - Date     Condition        Report By
 HV7389  HISTORY     - 1943     FIRST OBSERVED   CGS
 HV7389  HISTORY     - 1957     GOOD             CGS
 HV7389  HISTORY     - 1970     GOOD             NGS
 HV7389  HISTORY     - 20040315 GOOD             USPSQD
 HV7389
 HV7389                          STATION DESCRIPTION
 HV7389
 HV7389'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7389'THE STATION IS LOCATED ON THE GROUNDS OF THE U.S. NAVAL RADIO
 HV7389'STATION NEAR CHELTENHAM AND IS THE MOST WESTERLY OF TWO TANKS.  IT
 HV7389'IS 137 FEET WEST OF THE END OF A DRIVE WAY AND 54 FEET NORTH OF
 HV7389'A TENNIS COURT.  IT IS AN ELEVATED STEEL TANK SUPPORTED BY A
 HV7389'FOUR-LEGGED STRUCTURE, ABOUT 150 FEET TALL AND PAINTED WITH BROWN
 HV7389'AND WHITE CHECKS.
 HV7389
 HV7389                          STATION RECOVERY (1957)
 HV7389
 HV7389'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV7389'THE STATION IS LOCATED ABOUT 7 MI. SW OF UPPER MARLBORO, ABOUT
 HV7389'1-1/2 MI. W OF THE CHELTENHAM POST OFFICE, 1-1/2 MI. W OF
 HV7389'U.S. HIGHWAY 301, AND IS ON THE NAVAL RADIO STATION
 HV7389'RESERVATION.  IT IS OF STEEL CONSTRUCTION, PAINTED RED AND WHITE
 HV7389'(CHECKERED), AND IS 173 FT. HIGH.  THE POINT INTERSECTED WAS THE
 HV7389'FLASHING RED LIGHT ON THE TOP.
 HV7389'
 HV7389'TO REACH THE STATION FROM THE CHELTENHAM POST OFFICE, GO W FOR
 HV7389'0.45 MI. TO A SIDE ROAD LEFT, TURN LEFT AND GO W FOR 0.75 MI. TO
 HV7389'A GATE AND ENTRANCE TO THE NAVAL RADIO STATION, CONTINUE THROUGH
 HV7389'GATE FOR 0.7 MI. TO THE STATION ON THE LEFT.
 HV7389'
 HV7389'THIS IS AN INTERSECTION STATION.
 HV7389
 HV7389                          STATION RECOVERY (1970)
 HV7389
 HV7389'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7389'THE STATION WAS RECOVERED AS DESCRIBED IN 1943 BY G.W.L. AND
 HV7389'J.C.E. IN 1957.
 HV7389
 HV7389                          STATION RECOVERY (2004)
 HV7389
 HV7389'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV7389'THIS IS NO LONGER A NAVAL RADIO STATION.  THE PROPERTY IS NOW THE
 HV7389'FEDERAL LAW ENFORCEMENT TRAINING CENTER, 9000 COMMO ROAD, CHELTENHAM,
 HV7389'MD.  ALL TOWERS ARE REMOVED.  INFORMATION FROM LARRY DEAL, FACILITIES
 HV7389'MANAGER
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7390 ***********************************************************************
 HV7390  DESIGNATION -  CHELTENHAM NAVAL RAD STA E TK
 HV7390  PID         -  HV7390
 HV7390  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7390  COUNTRY     -  US
 HV7390  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7390
 HV7390                         *CURRENT SURVEY CONTROL
 HV7390  ______________________________________________________________________
 HV7390* NAD 83(1991) POSITION- 38 44 59.88236(N) 076 51 13.18037(W)   ADJUSTED
 HV7390  ______________________________________________________________________
 HV7390  GEOID HEIGHT    -        -32.742 (meters)                     GEOID18
 HV7390  LAPLACE CORR    -         -5.92  (seconds)                    DEFLEC18
 HV7390  HORZ ORDER      -  THIRD
 HV7390
 HV7390.The horizontal coordinates were established by classical geodetic methods
 HV7390.and adjusted by the National Geodetic Survey in January 1992.
 HV7390
 HV7390.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7390.GEOID18 height accuracy estimate available here.
 HV7390
 HV7390.Click photographs - Photos may exist for this station.
 HV7390
 HV7390.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7390
 HV7390. The following values were computed from the NAD 83(1991) position.
 HV7390
 HV7390;                    North         East     Units Scale Factor Converg.
 HV7390;SPC MD       -   120,260.872   412,720.684   MT  0.99995225   +0 05 30.6
 HV7390;SPC MD       -   394,555.88  1,354,067.78   sFT  0.99995225   +0 05 30.6
 HV7390;UTM  18      - 4,290,662.064   338,918.694   MT  0.99991952   -1 09 37.8
 HV7390
 HV7390_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3891890662(NAD 83)
 HV7390
 HV7390                          SUPERSEDED SURVEY CONTROL
 HV7390
 HV7390  NAD 83(1986)-  38 44 59.88018(N)    076 51 13.19466(W) AD(       ) 3
 HV7390  NAD 27      -  38 44 59.46697(N)    076 51 14.29624(W) AD(       ) 3
 HV7390
 HV7390.Superseded values are not recommended for survey control.
 HV7390
 HV7390.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7390.See file dsdata.pdf to determine how the superseded data were derived.
 HV7390
 HV7390_MARKER: 53 = ELEVATED TANK
 HV7390
 HV7390  HISTORY     - Date     Condition        Report By
 HV7390  HISTORY     - 1943     FIRST OBSERVED   CGS
 HV7390  HISTORY     - 1957     GOOD             CGS
 HV7390  HISTORY     - 1970     GOOD             NGS
 HV7390  HISTORY     - 20040315 GOOD             USPSQD
 HV7390
 HV7390                          STATION DESCRIPTION
 HV7390
 HV7390'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV7390'THE STATION IS LOCATED ABOUT 7 MI. SW OF UPPER MARLBORO, ABOUT
 HV7390'1-1/2 MI. W OF THE CHELTENHAM POST OFFICE, 1-1/2 MI. W OF
 HV7390'U.S. HIGHWAY 301, AND IS ON THE NAVAL RADIO STATION
 HV7390'RESERVATION.  IT IS OF STEEL CONSTRUCTION, PAINTED RED AND WHITE
 HV7390'(CHECKERED), AND IS 173 FT. HIGH.  THE POINT INTERSECTED WAS THE
 HV7390'RED FLASHING LIGHT ON THE TOP.
 HV7390'
 HV7390'TO REACH THE STATION FROM THE CHELTENHAM POST OFFICE, GO W FOR
 HV7390'0.45 MI. TO A SIDE ROAD LEFT, TURN LEFT AND GO W FOR 0.75 MI. TO
 HV7390'A GATE AND ENTRANCE TO THE NAVAL RADIO STATION, PASS THROUGH GATE
 HV7390'AND CONTINUE STRAIGHT AHEAD FOR 0.5 MI. TO THE STATION ON THE
 HV7390'RIGHT.
 HV7390
 HV7390                          STATION RECOVERY (1970)
 HV7390
 HV7390'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7390'THE STATION WAS RECOVERED AS DESCRIBED IN 1957 BY J.C. ELLERBE.
 HV7390
 HV7390                          STATION RECOVERY (2004)
 HV7390
 HV7390'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV7390'THIS IS NO LONGER A NAVAL RADIO STATION.  THE PROPERTY IS NOW THE
 HV7390'FEDERAL LAW ENFORCEMENT TRAINING CENTER, 9000 COMMO ROAD, CHELTENHAM,
 HV7390'MD.  ALL TOWERS ARE REMOVED.  INFORMATION FROM LARRY DEAL, FACILITIES
 HV7390'MANAGER
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7381 ***********************************************************************
 HV7381  DESIGNATION -  CHELTENHAM REFORM SCHOOL TANK
 HV7381  PID         -  HV7381
 HV7381  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7381  COUNTRY     -  US
 HV7381  USGS QUAD   -  BRANDYWINE (2016)
 HV7381
 HV7381                         *CURRENT SURVEY CONTROL
 HV7381  ______________________________________________________________________
 HV7381* NAD 83(1991) POSITION- 38 44 08.04547(N) 076 50 22.81210(W)   ADJUSTED
 HV7381  ______________________________________________________________________
 HV7381  GEOID HEIGHT    -        -32.822 (meters)                     GEOID18
 HV7381  LAPLACE CORR    -         -5.87  (seconds)                    DEFLEC18
 HV7381  HORZ ORDER      -  THIRD
 HV7381
 HV7381.The horizontal coordinates were established by classical geodetic methods
 HV7381.and adjusted by the National Geodetic Survey in January 1992.
 HV7381
 HV7381.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7381.GEOID18 height accuracy estimate available here.
 HV7381
 HV7381.Click photographs - Photos may exist for this station.
 HV7381
 HV7381.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7381
 HV7381. The following values were computed from the NAD 83(1991) position.
 HV7381
 HV7381;                    North         East     Units Scale Factor Converg.
 HV7381;SPC MD       -   118,664.537   413,939.692   MT  0.99995283   +0 06 02.3
 HV7381;SPC MD       -   389,318.57  1,358,067.14   sFT  0.99995283   +0 06 02.3
 HV7381;UTM  18      - 4,289,039.528   340,102.484   MT  0.99991485   -1 09 04.9
 HV7381
 HV7381_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4010289039(NAD 83)
 HV7381
 HV7381                          SUPERSEDED SURVEY CONTROL
 HV7381
 HV7381  NAD 83(1986)-  38 44 08.04315(N)    076 50 22.82646(W) AD(       ) 3
 HV7381  NAD 27      -  38 44 07.62860(N)    076 50 23.93134(W) AD(       ) 3
 HV7381
 HV7381.Superseded values are not recommended for survey control.
 HV7381
 HV7381.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7381.See file dsdata.pdf to determine how the superseded data were derived.
 HV7381
 HV7381_MARKER: 53 = ELEVATED TANK
 HV7381
 HV7381  HISTORY     - Date     Condition        Report By
 HV7381  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7381
 HV7381                          STATION DESCRIPTION
 HV7381
 HV7381'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7381'THE STATION IS THE CENTER OF THE TOP OF THE CHELTENHAM REFORM
 HV7381'SCHOOL TANK, LOCATED ON THE GROUNDS OF THE MARYLAND BOYS HOME
 HV7381'AND IS A DOUBLE ELIPSOIDAL ELEVATED TANK ABOUT 125 FEET ABOVE
 HV7381'THE GROUND.  IT IS 120 FEET EAST OF THE SOUTHEAST CORNER OF A
 HV7381'BRICK SCHOOL BUILDING.
 HV7381'
 HV7381'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 301
 HV7381'AND FRANK TIPPETT ROAD IN CHELTENHAM, GO WESTERLY ON FRANK
 HV7381'TIPPETT ROAD FOR 0.3 MILE TO THE ENTRANCE TO THE MARYLAND BOYS
 HV7381'HOME.  ENTER THE GROUNDS AND GO 0.3 MILE TO THE ADMINISTRATION
 HV7381'BUILDING AND THE STATION 0.2 MILE TO THE SOUTHEAST.
 HV7381'
 HV7381'IT IS ABOUT 0.15 MILE SOUTHEAST OF WHERE A WOOD WATER TANK STOOD
 HV7381'IN 1943, AND ABOUT 0.1 MILE EAST-SOUTHEAST OF WHERE ANOTHER WATER
 HV7381'TANK WAS RAZED TO ALLOW CONSTRUCTION OF A SCHOOL BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7386 ***********************************************************************
 HV7386  DESIGNATION -  CHELTENHAM ST FISH COMM MAST
 HV7386  PID         -  HV7386
 HV7386  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7386  COUNTRY     -  US
 HV7386  USGS QUAD   -  BRANDYWINE (2016)
 HV7386
 HV7386                         *CURRENT SURVEY CONTROL
 HV7386  ______________________________________________________________________
 HV7386* NAD 83(1991) POSITION- 38 44 16.68489(N) 076 49 14.42059(W)   ADJUSTED
 HV7386  ______________________________________________________________________
 HV7386  GEOID HEIGHT    -        -32.876 (meters)                     GEOID18
 HV7386  LAPLACE CORR    -         -6.03  (seconds)                    DEFLEC18
 HV7386  HORZ ORDER      -  THIRD
 HV7386
 HV7386.The horizontal coordinates were established by classical geodetic methods
 HV7386.and adjusted by the National Geodetic Survey in January 1992.
 HV7386
 HV7386.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7386.GEOID18 height accuracy estimate available here.
 HV7386
 HV7386.Click photographs - Photos may exist for this station.
 HV7386
 HV7386.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7386
 HV7386. The following values were computed from the NAD 83(1991) position.
 HV7386
 HV7386;                    North         East     Units Scale Factor Converg.
 HV7386;SPC MD       -   118,934.004   415,590.893   MT  0.99995273   +0 06 45.2
 HV7386;SPC MD       -   390,202.64  1,363,484.45   sFT  0.99995273   +0 06 45.2
 HV7386;UTM  18      - 4,289,272.841   341,759.111   MT  0.99990836   -1 08 22.3
 HV7386
 HV7386_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4175989272(NAD 83)
 HV7386
 HV7386                          SUPERSEDED SURVEY CONTROL
 HV7386
 HV7386  NAD 83(1986)-  38 44 16.68238(N)    076 49 14.43484(W) AD(       ) 3
 HV7386  NAD 27      -  38 44 16.26782(N)    076 49 15.54142(W) AD(       ) 3
 HV7386
 HV7386.Superseded values are not recommended for survey control.
 HV7386
 HV7386.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7386.See file dsdata.pdf to determine how the superseded data were derived.
 HV7386
 HV7386_MARKER: 42 = RADIO/TV MAST
 HV7386
 HV7386  HISTORY     - Date     Condition        Report By
 HV7386  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7386
 HV7386                          STATION DESCRIPTION
 HV7386
 HV7386'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7386'THE STATION IS THE CENTER OF THE TOP OF THE CHELTENHAM STATE FISH
 HV7386'AND GAME RADIO STATION KDP 454 MAST, LOCATED ON PROPERTY OF THE
 HV7386'STATE OF MARYLAND 0.1 MILE NORTHEAST OF THE INTERSECTION OF
 HV7386'FRANK TIPPETT ROAD AND U.S. HIGHWAY 301.  IT IS ABOUT 150 FEET
 HV7386'ABOVE THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5727 ***********************************************************************
 JV5727  DESIGNATION -  CHEMICAL USE 1916
 JV5727  PID         -  JV5727
 JV5727  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5727  COUNTRY     -  US
 JV5727  USGS QUAD   -  CURTIS BAY (2016)
 JV5727
 JV5727                         *CURRENT SURVEY CONTROL
 JV5727  ______________________________________________________________________
 JV5727* NAD 83(1991) POSITION- 39 12 53.83944(N) 076 34 05.05651(W)   ADJUSTED
 JV5727* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5727  ______________________________________________________________________
 JV5727  GEOID HEIGHT    -        -32.927 (meters)                     GEOID18
 JV5727  LAPLACE CORR    -         -3.93  (seconds)                    DEFLEC18
 JV5727  HORZ ORDER      -  THIRD
 JV5727
 JV5727.The horizontal coordinates were established by classical geodetic methods
 JV5727.and adjusted by the National Geodetic Survey in January 1992.
 JV5727
 JV5727.The orthometric height was scaled from a topographic map.
 JV5727
 JV5727.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5727.GEOID18 height accuracy estimate available here.
 JV5727
 JV5727.Click photographs - Photos may exist for this station.
 JV5727
 JV5727.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5727
 JV5727. The following values were computed from the NAD 83(1991) position.
 JV5727
 JV5727;                    North         East     Units Scale Factor Converg.
 JV5727;SPC MD       -   171,957.284   437,301.600   MT  0.99996733   +0 16 15.9
 JV5727;SPC MD       -   564,163.19  1,434,713.67   sFT  0.99996733   +0 16 15.9
 JV5727;UTM  18      - 4,341,802.198   364,626.331   MT  0.99982565   -0 59 29.5
 JV5727
 JV5727!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5727!SPC MD       -   1.00000520  x   0.99996733  =   0.99997253
 JV5727!UTM  18      -   1.00000520  x   0.99982565  =   0.99983085
 JV5727
 JV5727:                Primary Azimuth Mark                     Grid Az
 JV5727:SPC MD       -  STONE                                    328 12 02.9
 JV5727:UTM  18      -  STONE                                    329 27 48.3
 JV5727
 JV5727_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6462641802(NAD 83)
 JV5727
 JV5727|---------------------------------------------------------------------|
 JV5727| PID    Reference Object                     Distance      Geod. Az  |
 JV5727|                                                           dddmmss.s |
 JV5727| JV5714 STONE                               APPROX. 1.4 KM 3282818.8 |
 JV5727| JV5720 WAGNERS CHURCH SPIRE                APPROX. 1.8 KM 3570053.0 |
 JV5727|---------------------------------------------------------------------|
 JV5727
 JV5727                          SUPERSEDED SURVEY CONTROL
 JV5727
 JV5727  NAD 83(1986)-  39 12 53.83574(N)    076 34 05.06588(W) AD(       ) 3
 JV5727  NAD 27      -  39 12 53.44800(N)    076 34 06.19200(W) AD(       ) 3
 JV5727  USSD        -  39 12 53.81100(N)    076 34 06.03300(W) AD(       ) 3
 JV5727
 JV5727.Superseded values are not recommended for survey control.
 JV5727
 JV5727.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5727.See file dsdata.pdf to determine how the superseded data were derived.
 JV5727
 JV5727
 JV5727  HISTORY     - Date     Condition        Report By
 JV5727  HISTORY     - 1916     MONUMENTED       CGS
 JV5727  HISTORY     - 1924     GOOD             CGS
 JV5727
 JV5727                          STATION DESCRIPTION
 JV5727
 JV5727'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5727'AT THE S SIDE OF CURTIS BAY, 47.24 METERS (155.0 FEET) SE FROM
 JV5727'THE NORTHERLY CORNER OF A BUILDING NEAR THE BLUFF, 20.27 METERS
 JV5727'(66.5 FEET) NE FROM A DEAD TREE, AND 9.57 METERS (31.4 FEET) W OF
 JV5727'ANOTHER DEAD TREE ON THE OTHER SIDE OF A FENCE.  MARKED BY A
 JV5727'CONCRETE MONUMENT CENTERED BY STANDARD U.S.E. BRONZE MARKER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6129 ***********************************************************************
 JV6129  DESIGNATION -  CHERRY
 JV6129  PID         -  JV6129
 JV6129  STATE/COUNTY-  MD/CARROLL
 JV6129  COUNTRY     -  US
 JV6129  USGS QUAD   -  MANCHESTER (2016)
 JV6129
 JV6129                         *CURRENT SURVEY CONTROL
 JV6129  ______________________________________________________________________
 JV6129* NAD 83(1991) POSITION- 39 42 17.53789(N) 076 59 50.51840(W)   ADJUSTED
 JV6129* NAVD 88 ORTHO HEIGHT -   274.    (meters)      899.    (feet) SCALED
 JV6129  ______________________________________________________________________
 JV6129  GEOID HEIGHT    -        -32.697 (meters)                     GEOID18
 JV6129  LAPLACE CORR    -          4.67  (seconds)                    DEFLEC18
 JV6129  HORZ ORDER      -  FIRST
 JV6129
 JV6129.The horizontal coordinates were established by classical geodetic methods
 JV6129.and adjusted by the National Geodetic Survey in January 1992.
 JV6129
 JV6129.The orthometric height was scaled from a topographic map.
 JV6129
 JV6129.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6129.GEOID18 height accuracy estimate available here.
 JV6129
 JV6129.Click photographs - Photos may exist for this station.
 JV6129
 JV6129.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6129
 JV6129. The following values were computed from the NAD 83(1991) position.
 JV6129
 JV6129;                    North         East     Units Scale Factor Converg.
 JV6129;SPC MD       -   226,261.897   400,225.886   MT  1.00005454   +0 00 06.0
 JV6129;SPC MD       -   742,327.57  1,313,074.43   sFT  1.00005454   +0 00 06.0
 JV6129;SPC PA S     -    41,529.056   664,548.168   MT  1.00004358   +0 29 17.9
 JV6129;SPC PA S     -   136,249.91  2,180,271.78   sFT  1.00004358   +0 29 17.9
 JV6129;UTM  18      - 4,396,908.805   328,767.240   MT  0.99996099   -1 16 34.7
 JV6129
 JV6129!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6129!SPC MD       -   0.99996218  x   1.00005454  =   1.00001671
 JV6129!SPC PA S     -   0.99996218  x   1.00004358  =   1.00000575
 JV6129!UTM  18      -   0.99996218  x   0.99996099  =   0.99992317
 JV6129
 JV6129:                Primary Azimuth Mark                     Grid Az
 JV6129:SPC MD       -  CHERRY AZ MK                             205 42 19.1
 JV6129:SPC PA S     -  CHERRY AZ MK                             205 13 07.2
 JV6129:UTM  18      -  CHERRY AZ MK                             206 58 59.8
 JV6129
 JV6129_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2876796908(NAD 83)
 JV6129
 JV6129|---------------------------------------------------------------------|
 JV6129| PID    Reference Object                     Distance      Geod. Az  |
 JV6129|                                                           dddmmss.s |
 JV6129| CB1077 CHERRY RM 2                          19.577 METERS 01206     |
 JV6129| CB1075 CHERRY AZ MK                                       2054225.1 |
 JV6129| CB1076 CHERRY RM 1                          19.858 METERS 23013     |
 JV6129|---------------------------------------------------------------------|
 JV6129
 JV6129                          SUPERSEDED SURVEY CONTROL
 JV6129
 JV6129  NAD 83(1986)-  39 42 17.53543(N)    076 59 50.52025(W) AD(       ) 1
 JV6129  NAD 27      -  39 42 17.16900(N)    076 59 51.58700(W) AD(       ) 1
 JV6129
 JV6129.Superseded values are not recommended for survey control.
 JV6129
 JV6129.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6129.See file dsdata.pdf to determine how the superseded data were derived.
 JV6129
 JV6129_MARKER: DS = TRIANGULATION STATION DISK
 JV6129_SETTING: 80 = SET IN A BOULDER
 JV6129_STAMPING: CHERRY 1939
 JV6129_MARK LOGO: CGS
 JV6129_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6129+STABILITY: SURFACE MOTION
 JV6129
 JV6129  HISTORY     - Date     Condition        Report By
 JV6129  HISTORY     - 1939     MONUMENTED       CGS
 JV6129
 JV6129                          STATION DESCRIPTION
 JV6129
 JV6129'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV6129'STATION IS ABOUT 9 MILES N OF WESTMINSTER, 3 MILES NNE OF UNION
 JV6129'MILLS, 1 MILE S OF THE STATE LINE, AND 3/4 MILE NE OF CHERRY
 JV6129'GROVE SCHOOL.  STATION IS ON TOP OF A HIGH TIMBER RIDGE THAT HAS
 JV6129'A FIELD ON ITS SE SLOPE, ON LAND OWNED BY MR. PAUL H. KRUMRINE,
 JV6129'WHO LIVES ABOUT 1 MILE E OF STATION.  STATION MARK IS SET IN A
 JV6129'6-FOOT DEEPLY EMBEDDED BOULDER WHICH PROJECTS ABOUT 1.5 FEET.
 JV6129'MARK IS IN SMALL CLEARING ABOUT 15 FEET SW OF THE NW END OF TRUCK
 JV6129'TRAIL.
 JV6129'
 JV6129'STATION MARK IS A STANDARD BRONZE DISK WEDGED IN A DRILL HOLE
 JV6129'IN A BOULDER.
 JV6129'
 JV6129'REFERENCE MARK NO.1 IS A STANDARD BRONZE DISK, IN A BOULDER.
 JV6129'
 JV6129'REFERENCE MARK NO.2 IS A STANDARD BRONZE DISK IN OUTCROPPING
 JV6129'BEDROCK.
 JV6129'
 JV6129'AZIMUTH MARK IS A STANDARD BRONZE DISK SET IN CONCRETE.
 JV6129'
 JV6129'REFERENCE MARK NO.1 IS SW OF THE STATION, SET IN TOP OF 4-FOOT
 JV6129'FAST BOULDER WHICH PROJECTS 1-1/2 FEET.  MARK IS ABOUT 50 FEET
 JV6129'SW OF END OF TRUCK TRAIL AND 3 FEET BELOW STATION LEVEL.
 JV6129'
 JV6129'REFERENCE MARK NO.2 IS N BY E OF STATION SET IN TOP OF LARGE MASS
 JV6129'OF OUTCROPPING LEDGE ROCK AND IS ABOUT 5 FEET ABOVE STATION MARK.
 JV6129'
 JV6129'AZIMUTH MARK IS SSW OF STATION, 0.1 MILE W OF FARM BUILDINGS AND
 JV6129'CROSS ROAD, IN THE SW CORNER OF PASTURE, 5 FEET E OF WOODS LINE,
 JV6129'21 FEET N OF CENTER LINE OF DIRT ROAD.  THE MARK PROJECTS 4 INCHES.
 JV6129'
 JV6129'NOTE--A 50-FOOT TOWER WILL BE NECESSARY TO SEE AZIMUTH MARK, AS
 JV6129'STATION IS IN TIMBER AND IT WAS NOT POSSIBLE TO PLACE AZIMUTH
 JV6129'VISIBLE FROM GROUND.
 JV6129'
 JV6129'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 140 AND
 JV6129'STATE HIGHWAYS 32 AND 31 IN WESTMINSTER GO N ON U.S. HIGHWAY 140
 JV6129'FOR 4.25 MILES TO MOUNT PLEASANT GARAGE, THEN CONTINUE FOR 2.3
 JV6129'MILES TO A NARROW ROAD FORK RIGHT, JUST BEFORE ARRIVING AT A
 JV6129'SIGN READING UNION MILLS 25 MILES PER HOUR WHICH IS HALF WAY
 JV6129'DOWN A HILL, THEN LEAVE U.S. HIGHWAY 140, TAKE RIGHT FORK DOWN
 JV6129'HILL FOR 0.05 MILE TO A FORK JUST N OF A FEED MILL (RIGHT FORK
 JV6129'IS PAVED), THEN KEEP LEFT FORK ON DIRT ROAD N FOR 0.1 MILE TO
 JV6129'BRIDGE OVER BIG PIPE CREEK, THEN CONTINUE N ON DIRT ROAD FOR
 JV6129'2.0 MILES TO A FORK AT CHERRY GROVE SCHOOL, THEN TAKE RIGHT
 JV6129'FORK AND GO NORTHEASTERLY FOR 0.55 MILE TO AZIMUTH MARK ON LEFT
 JV6129'IN SW CORNER OF PASTURE, CONTINUE 0.1 MILE TO CROSSROADS
 JV6129'JUST BEFORE ARRIVING AT FARM BUILDINGS, THEN TURN LEFT AND GO
 JV6129'N FOR 0.1 MILE TO A DIM RIGHT FORK 20 FEET AFTER ENTERING
 JV6129'TIMBER, THEN TAKE THIS DIM RIGHT FORK EASTERLY THROUGH
 JV6129'TIMBER FOR 0.15 MILE TO A TRIANGLE BLAZE AND AN ARROW ON A
 JV6129'LARGE TREE AT THE NW CORNER OF A CORNFIELD, THEN CONTINUE
 JV6129'EASTERLY THROUGH TIMBER FOLLOWING BLAZES ALONG LEFT EDGE OF
 JV6129'FIELD FOR ABOUT 100 YARDS TO ANOTHER TRIANGLE BLAZE THEN TURN
 JV6129'LEFT AND GO ABOUT 30 YARDS TO ANOTHER TRIANGLE BLAZE AND AN
 JV6129'ARROW ON THE HIGHEST PART OF RIDGE AND STATION SITE.
 JV6129'
 JV6129'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6576 ***********************************************************************
 HV6576  DESIGNATION -  CHERRY 1908
 HV6576  PID         -  HV6576
 HV6576  STATE/COUNTY-  MD/ST MARYS
 HV6576  COUNTRY     -  US
 HV6576  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6576
 HV6576                         *CURRENT SURVEY CONTROL
 HV6576  ______________________________________________________________________
 HV6576* NAD 83(1993) POSITION- 38 07 39.98989(N) 076 28 02.44753(W)   ADJUSTED
 HV6576* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6576  ______________________________________________________________________
 HV6576  GEOID HEIGHT    -        -34.735 (meters)                     GEOID18
 HV6576  LAPLACE CORR    -         -6.08  (seconds)                    DEFLEC18
 HV6576  HORZ ORDER      -  THIRD
 HV6576
 HV6576.The horizontal coordinates were established by classical geodetic methods
 HV6576.and adjusted by the National Geodetic Survey in November 1994.
 HV6576
 HV6576.The orthometric height was scaled from a topographic map.
 HV6576
 HV6576.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6576.GEOID18 height accuracy estimate available here.
 HV6576
 HV6576.Click photographs - Photos may exist for this station.
 HV6576
 HV6576.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6576
 HV6576. The following values were computed from the NAD 83(1993) position.
 HV6576
 HV6576;                    North         East     Units Scale Factor Converg.
 HV6576;SPC MD       -    51,321.727   446,704.316   MT  1.00003442   +0 20 03.5
 HV6576;SPC MD       -   168,378.03  1,465,562.41   sFT  1.00003442   +0 20 03.5
 HV6576;SPC VA N     - 2,053,154.959 3,678,205.449   MT  0.99998467   +1 16 07.0
 HV6576;SPC VA N     - 6,736,059.23 12,067,579.04   sFT  0.99998467   +1 16 07.0
 HV6576;SPC VA S     - 1,201,067.190 3,678,214.919   MT  1.00003338   +1 14 01.2
 HV6576;SPC VA S     - 3,940,501.27 12,067,610.11   sFT  1.00003338   +1 14 01.2
 HV6576;UTM  18      - 4,221,008.983   371,391.369   MT  0.99980371   -0 54 21.9
 HV6576
 HV6576!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6576!SPC MD       -   1.00000534  x   1.00003442  =   1.00003976
 HV6576!SPC VA N     -   1.00000534  x   0.99998467  =   0.99999001
 HV6576!SPC VA S     -   1.00000534  x   1.00003338  =   1.00003872
 HV6576!UTM  18      -   1.00000534  x   0.99980371  =   0.99980905
 HV6576
 HV6576:                Primary Azimuth Mark                     Grid Az
 HV6576:SPC MD       -  BETWEEN                                  105 51 58.7
 HV6576:SPC VA N     -  BETWEEN                                  104 55 55.2
 HV6576:SPC VA S     -  BETWEEN                                  104 58 01.0
 HV6576:UTM  18      -  BETWEEN                                  107 06 24.1
 HV6576
 HV6576_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7139121008(NAD 83)
 HV6576
 HV6576|---------------------------------------------------------------------|
 HV6576| PID    Reference Object                     Distance      Geod. Az  |
 HV6576|                                                           dddmmss.s |
 HV6576| HV6541 BETWEEN                             APPROX. 3.3 KM 1061202.2 |
 HV6576|---------------------------------------------------------------------|
 HV6576
 HV6576                          SUPERSEDED SURVEY CONTROL
 HV6576
 HV6576  NAD 83(1991)-  38 07 39.98879(N)    076 28 02.45064(W) AD(       ) 3
 HV6576  NAD 83(1986)-  38 07 39.99006(N)    076 28 02.46375(W) AD(       ) 3
 HV6576  NAD 27      -  38 07 39.57700(N)    076 28 03.70100(W) AD(       ) 3
 HV6576  USSD        -  38 07 39.96000(N)    076 28 03.41500(W) AD(       ) 3
 HV6576
 HV6576.Superseded values are not recommended for survey control.
 HV6576
 HV6576.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6576.See file dsdata.pdf to determine how the superseded data were derived.
 HV6576
 HV6576_MARKER: H = DRILL HOLE
 HV6576_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6576_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6576+STABILITY: SURFACE MOTION
 HV6576
 HV6576  HISTORY     - Date     Condition        Report By
 HV6576  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6576  HISTORY     - 1942     GOOD             CGS
 HV6576  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6576
 HV6576                          STATION DESCRIPTION
 HV6576
 HV6576'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6576'STATION IS ON NORTHERN SIDE OF ENTRANCE TO ST. GEORGE RIVER,
 HV6576'ON CHERRYFIELD POINT, ABOUT 2 FEET ABOVE HIGH WATER, 27 YARDS
 HV6576'E OF SHORE, 30 YARDS N OF SHORE, 30 YARDS SW OF PINE WOODS, AND
 HV6576'NEAR SEVERAL TREES.
 HV6576'
 HV6576'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6576'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6576'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6576'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6576'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6576'FOLLOWS--CHIMNEY OF HOUSE WITH ELL, 7/8 MILE, S 22 DEG 09 MIN W.
 HV6576'NEAR CHIMNEY OF HOUSE ON OPPOSITE POINT, 1/2 MILE, S 31 DEG 20 MIN W.
 HV6576'CROSS ON CATHOLIC CHURCH, 3/4 MILE, IS S 46 DEG 46 MIN W.  CHIMNEY OF
 HV6576'2 1/2-STORY HOUSE, 1 MILE, S 74 DEG 04 MIN W.  LEFT PIAZZA
 HV6576'POST OF DANA HALL, 1-1/4 MILES, S 88 DEG 31 MIN W.  NEAR PEAK OF
 HV6576'ROOF OF BARN, 7/8 MILE, N 43 DEG 34 MIN W.  NAIL IN BLAZE IN
 HV6576'14-INCH PINE TREE, 21.96 METERS (72.0 FEET), N 22 DEG 08 MIN E.
 HV6576'NAIL IN BLAZE IN 14-INCH PINE TREE, 6.30 METERS (20.67 FEET),
 HV6576'N 59 DEG 26 MIN E.  NAIL IN BLAZE IN 8-INCH PINE TREE,
 HV6576'17.40 METERS (57.1 FEET), N 78 DEG 53 MIN E.
 HV6576
 HV6576                          STATION RECOVERY (1942)
 HV6576
 HV6576'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6576'THE STATION IS LOCATED ON CHERRY ORCHARD POINT, AT THE TIP
 HV6576'OF A LOW MARSHY POINT AND IS SURROUNDED BY SALT WATER BRUSH, ABOUT
 HV6576'3 FEET HIGH.
 HV6576'
 HV6576'THE STATION IS A 1-INCH GALVANIZED-IRON PIPE SET IN THE TOP
 HV6576'OF A SQUARE CONCRETE POST, AND IS FLUSH WITH THE GROUND.  STATION
 HV6576'IS IN GOOD CONDITION.
 HV6576
 HV6576                          STATION RECOVERY (1958)
 HV6576
 HV6576'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6576'A THOROUGH SEARCH WAS MADE FOR THIS STATION.  THE POINT ON
 HV6576'WHICH THIS STATION WAS LOCATED HAS BEEN ERODING.  THE STATION
 HV6576'MARK WAS PROBABLY DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6803 ***********************************************************************
 HV6803  DESIGNATION -  CHERRY COVE MSFC 1908
 HV6803  PID         -  HV6803
 HV6803  STATE/COUNTY-  MD/ST MARYS
 HV6803  COUNTRY     -  US
 HV6803  USGS QUAD   -  LEONARDTOWN (2016)
 HV6803
 HV6803                         *CURRENT SURVEY CONTROL
 HV6803  ______________________________________________________________________
 HV6803* NAD 83(1993) POSITION- 38 15 34.52921(N) 076 40 50.80710(W)   ADJUSTED
 HV6803* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6803  ______________________________________________________________________
 HV6803  GEOID HEIGHT    -        -33.821 (meters)                     GEOID18
 HV6803  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 HV6803  HORZ ORDER      -  THIRD
 HV6803
 HV6803.The horizontal coordinates were established by classical geodetic methods
 HV6803.and adjusted by the National Geodetic Survey in November 1994.
 HV6803
 HV6803.The orthometric height was scaled from a topographic map.
 HV6803
 HV6803.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6803.GEOID18 height accuracy estimate available here.
 HV6803
 HV6803.Click photographs - Photos may exist for this station.
 HV6803
 HV6803.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6803
 HV6803. The following values were computed from the NAD 83(1993) position.
 HV6803
 HV6803;                    North         East     Units Scale Factor Converg.
 HV6803;SPC MD       -    65,866.266   427,938.923   MT  1.00000728   +0 12 01.3
 HV6803;SPC MD       -   216,096.24  1,403,996.28   sFT  1.00000728   +0 12 01.3
 HV6803;SPC VA N     - 2,067,390.818 3,659,206.143   MT  0.99996778   +1 08 07.5
 HV6803;SPC VA N     - 6,782,764.71 12,005,245.49   sFT  0.99996778   +1 08 07.5
 HV6803;UTM  18      - 4,235,953.681   352,948.761   MT  0.99986632   -1 02 27.5
 HV6803
 HV6803!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6803!SPC MD       -   1.00000488  x   1.00000728  =   1.00001216
 HV6803!SPC VA N     -   1.00000488  x   0.99996778  =   0.99997266
 HV6803!UTM  18      -   1.00000488  x   0.99986632  =   0.99987120
 HV6803
 HV6803:                Primary Azimuth Mark                     Grid Az
 HV6803:SPC MD       -  PAW MSFC 1908                            094 58 11.6
 HV6803:SPC VA N     -  PAW MSFC 1908                            094 02 05.4
 HV6803:UTM  18      -  PAW MSFC 1908                            096 12 40.4
 HV6803
 HV6803_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5294835953(NAD 83)
 HV6803
 HV6803|---------------------------------------------------------------------|
 HV6803| PID    Reference Object                     Distance      Geod. Az  |
 HV6803|                                                           dddmmss.s |
 HV6803| HV6816 PAW MSFC 1908                       APPROX. 1.4 KM 0951012.9 |
 HV6803|---------------------------------------------------------------------|
 HV6803
 HV6803                          SUPERSEDED SURVEY CONTROL
 HV6803
 HV6803  NAD 83(1991)-  38 15 34.52807(N)    076 40 50.81199(W) AD(       ) 3
 HV6803  NAD 83(1986)-  38 15 34.52900(N)    076 40 50.82354(W) AD(       ) 3
 HV6803  NAD 27      -  38 15 34.05600(N)    076 40 51.93800(W) AD(       ) 3
 HV6803  USSD        -  38 15 34.66000(N)    076 40 51.85300(W) AD(       ) 3
 HV6803
 HV6803.Superseded values are not recommended for survey control.
 HV6803
 HV6803.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6803.See file dsdata.pdf to determine how the superseded data were derived.
 HV6803
 HV6803_MARKER: H = DRILL HOLE
 HV6803_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6803_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6803+STABILITY: SURFACE MOTION
 HV6803
 HV6803  HISTORY     - Date     Condition        Report By
 HV6803  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6803  HISTORY     - 1942     GOOD             CGS
 HV6803  HISTORY     - 1961     MARK NOT FOUND   USGS
 HV6803
 HV6803                          STATION DESCRIPTION
 HV6803
 HV6803'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6803'STATION IS ON NORTHWESTERN SHORE OF BRETONS BAY, ABOUT 1-3/4 MILES
 HV6803'NNE OF HIGGINS POINT, AND 1/8 MILE WSW OF ENTRANCE TO CHERRY
 HV6803'COVE, IN A FIELD ABOUT 15 FEET ABOVE HIGH WATER, 12 YARDS N OF
 HV6803'EDGE OF BANK, 17 YARDS WSW OF NEAR CORNER OF 2-STORY HOUSE, 23
 HV6803'YARDS WNW OF A POINT, 25 YARDS W OF EDGE OF BANK, AND 27 YARDS SW
 HV6803'BY S OF A WIRE FENCE AROUND A GARDEN.
 HV6803'
 HV6803'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6803'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6803'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6803'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6803'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6803'AS FOLLOWS--PEAK OF TIN ROOF OF PRIESTS HOUSE, 1-1/8 MILES, S 74
 HV6803'DEG 26 MIN W.  NEAR PEAK OF ROOF OF LARGE HOUSE, 3/8 MILE, N 77
 HV6803'DEG 27 MIN W.  TANGENT OF POINT OF BANK ON OPPOSITE SIDE OF CHERRY
 HV6803'COVE, 3/8 MILE, N 13 DEG 39 MIN E.  LEFT CHIMNEY OF HOUSE, 1-1/8
 HV6803'MILES, N 25 DEG 27 MIN E.  NAIL IN BLAZE IN 3-INCH CORNER FENCE
 HV6803'POST, 26.46 METERS (86.8 FEET), N 39 DEG 4 MIN E.  LEFT CORNER OF
 HV6803'HOUSE, 19.95 METERS (65.5 FEET), N 60 DEG 1 MIN E. NEAR CORNER OF
 HV6803'HOUSE, 17.14 METERS (56.2 FEET), N 71 DEG 39 MIN E. RIGHT CORNER
 HV6803'OF HOUSE, 24.94 METERS (81.8 FEET), N 81 DEG 52 MIN E.  LEFT
 HV6803'CORNER OF LARGE HOUSE NEAR ABELLS WHARF, 2 MILES, N 89 DEG 48
 HV6803'MIN E.  WATER TANK, 2 MILES, S 89 DEG 35 MIN E.  CHIMNEY OF LARGE
 HV6803'HOUSE, 2 MILES, S 57 DEG 54 MIN E.  CHIMNEY OF LARGE HOUSE, 1-3/8
 HV6803'MILES, S 45 DEG 34 MIN E.  CUPOLA ON BUILDING IN WOODS, 1-1/4
 HV6803'MILES, S 9 DEG 31 MIN E.
 HV6803
 HV6803                          STATION RECOVERY (1942)
 HV6803
 HV6803'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6803'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HV6803'
 HV6803'(1) DELETE 12 YARDS N OF EDGE OF BANK, SINCE IT IS ONLY 1 YARD.
 HV6803'
 HV6803'(2) DELETE 17 YARDS SW OF NEAR CORNER OF 2-STORY HOUSE, SINCE IT
 HV6803'IS 56 FEET.
 HV6803'
 HV6803'(3) DELETE 25 YARDS W OF EDGE OF BANK, SINCE IT IS 89 FEET.
 HV6803'
 HV6803'(4) DELETE 27 YARDS SW OF A WIRE FENCE AROUND A GARDEN, SINCE THE
 HV6803'GARDEN AND FENCE NO LONGER EXIST.
 HV6803'
 HV6803'(5) DELETE NAIL IN BLAZE IN 3-INCH CORNER FENCE POST 26.46 METERS,
 HV6803'SINCE THE FENCE NO LONGER EXISTS.
 HV6803'
 HV6803'THE STATION IS LOCATED ON THE NORTHWESTERN SHORE OF BRETONS BAY,
 HV6803'ABOUT 1-3/4 MILES NE OF HIGGINS POINT, AND ABOUT 1/8 MILE SW OF
 HV6803'ENTRANCE TO CHERRY COVE IN A PASTURE ABOUT 15 FEET ABOVE HIGH
 HV6803'WATER, 56 FEET SW OF THE SW CORNER OF A 2-STORY HOUSE, 23 YARDS
 HV6803'NW OF A POINT, 109 FEET W OF A LONE OAK TREE AT THE TOP OF A BANK,
 HV6803'AND 3 FEET N OF THE EDGE OF THE BANK.
 HV6803'
 HV6803'THE STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6803'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH
 HV6803'SQUARE CONCRETE MONUMENT, 2 FEET LONG, WHICH PROJECTS 2 INCHES
 HV6803'ABOVE THE SURFACE OF THE GROUND.  THE LETTERS M.S.F.C. AND
 HV6803'U.S.C.S. ARE COUNTERSUNK IN THE TOP OF THE MONUMENT.  THE STATION
 HV6803'IS IN GOOD CONDITION.
 HV6803'
 HV6803'TO REACH THE STATION FROM COMPTON POST OFFICE, GO IN A NORTHERLY
 HV6803'DIRECTION ON MAIN ROAD, 0.6 MILE TO THE THREE POINT LANDING ROAD
 HV6803'AND TURN RIGHT ON THIS ROAD, GO ABOUT 1.5 MILES AND TURN LEFT
 HV6803'THROUGH A GATE AND GO ABOUT 0.2 MILE TO STATION.
 HV6803
 HV6803                          STATION RECOVERY (1961)
 HV6803
 HV6803'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1961
 HV6803'STATION NOT FOUND.  PROBABLY BURIED UNDER FILL USED FOR HOUSING
 HV6803'DEVELOPMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5947 ***********************************************************************
 HV5947  DESIGNATION -  CHERRY IS WATER TANK FLAGSTAFF
 HV5947  PID         -  HV5947
 HV5947  STATE/COUNTY-  MD/DORCHESTER
 HV5947  COUNTRY     -  US
 HV5947  USGS QUAD   -  CHURCH CREEK (2016)
 HV5947
 HV5947                         *CURRENT SURVEY CONTROL
 HV5947  ______________________________________________________________________
 HV5947* NAD 83(1991) POSITION- 38 33 44.39735(N) 076 12 42.79212(W)   ADJUSTED
 HV5947  ______________________________________________________________________
 HV5947  GEOID HEIGHT    -        -34.756 (meters)                     GEOID18
 HV5947  LAPLACE CORR    -         -5.12  (seconds)                    DEFLEC18
 HV5947  HORZ ORDER      -  THIRD
 HV5947
 HV5947.The horizontal coordinates were established by classical geodetic methods
 HV5947.and adjusted by the National Geodetic Survey in January 1992.
 HV5947
 HV5947.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5947.GEOID18 height accuracy estimate available here.
 HV5947
 HV5947.Click photographs - Photos may exist for this station.
 HV5947
 HV5947.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5947
 HV5947. The following values were computed from the NAD 83(1991) position.
 HV5947
 HV5947;                    North         East     Units Scale Factor Converg.
 HV5947;SPC MD       -    99,718.925   468,686.738   MT  0.99996473   +0 29 40.7
 HV5947;SPC MD       -   327,161.17  1,537,683.07   sFT  0.99996473   +0 29 40.7
 HV5947;UTM  18      - 4,268,906.114   394,415.417   MT  0.99973728   -0 45 19.9
 HV5947
 HV5947_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9441568906(NAD 83)
 HV5947
 HV5947                          SUPERSEDED SURVEY CONTROL
 HV5947
 HV5947  NAD 83(1986)-  38 33 44.39487(N)    076 12 42.80757(W) AD(       ) 3
 HV5947  NAD 27      -  38 33 43.98900(N)    076 12 43.99700(W) AD(       ) 3
 HV5947  USSD        -  38 33 44.37700(N)    076 12 43.77600(W) AD(       ) 3
 HV5947
 HV5947.Superseded values are not recommended for survey control.
 HV5947
 HV5947.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5947.See file dsdata.pdf to determine how the superseded data were derived.
 HV5947
 HV5947_MARKER: 62 = FLAGPOLE
 HV5947
 HV5947  HISTORY     - Date     Condition        Report By
 HV5947  HISTORY     - 1910     FIRST OBSERVED   MDSFC
 HV5947  HISTORY     - 1961     GOOD             CGS
 HV5947  HISTORY     - 1975     GOOD             MDDNR
 HV5947
 HV5947                          STATION DESCRIPTION
 HV5947
 HV5947'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5947'THERE IS A WOODEN WATER TANK, OR TOWER, ON CHERRY ISLAND AT THE
 HV5947'PLOTTED POSITION OF THE STATION.  NO FLAGSTAFF IS EVIDENT BUT
 HV5947'THERE IS A SMALL SPINDLE OR SHAFT EXTENDING FROM THE CENTER OF THE
 HV5947'TOWER THAT MAY HAVE BEEN THE FLAGSTAFF.
 HV5947
 HV5947                          STATION RECOVERY (1975)
 HV5947
 HV5947'RECOVERY NOTE BY MD DEPT OF NAT RES 1975 (GEH)
 HV5947'CONDITION GOOD.
 HV5947'
 HV5947'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7211 ***********************************************************************
 HV7211  DESIGNATION -  CHES
 HV7211  PID         -  HV7211
 HV7211  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7211  COUNTRY     -  US
 HV7211  USGS QUAD   -  DEALE (2016)
 HV7211
 HV7211                         *CURRENT SURVEY CONTROL
 HV7211  ______________________________________________________________________
 HV7211* NAD 83(1991) POSITION- 38 51 47.04177(N) 076 31 10.06744(W)   ADJUSTED
 HV7211* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7211  ______________________________________________________________________
 HV7211  GEOID HEIGHT    -        -33.467 (meters)                     GEOID18
 HV7211  LAPLACE CORR    -         -3.63  (seconds)                    DEFLEC18
 HV7211  HORZ ORDER      -  THIRD
 HV7211
 HV7211.The horizontal coordinates were established by classical geodetic methods
 HV7211.and adjusted by the National Geodetic Survey in January 1992.
 HV7211
 HV7211.The orthometric height was scaled from a topographic map.
 HV7211
 HV7211.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7211.GEOID18 height accuracy estimate available here.
 HV7211
 HV7211.Click photographs - Photos may exist for this station.
 HV7211
 HV7211.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7211
 HV7211. The following values were computed from the NAD 83(1991) position.
 HV7211
 HV7211;                    North         East     Units Scale Factor Converg.
 HV7211;SPC MD       -   132,915.240   441,705.010   MT  0.99994987   +0 18 05.8
 HV7211;SPC MD       -   436,072.75  1,449,160.52   sFT  0.99994987   +0 18 05.8
 HV7211;UTM  18      - 4,302,678.145   368,170.470   MT  0.99981400   -0 57 12.7
 HV7211
 HV7211!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7211!SPC MD       -   1.00000529  x   0.99994987  =   0.99995516
 HV7211!UTM  18      -   1.00000529  x   0.99981400  =   0.99981929
 HV7211
 HV7211:                Primary Azimuth Mark                     Grid Az
 HV7211:SPC MD       -  RHODE                                    002 27 16.7
 HV7211:UTM  18      -  RHODE                                    003 42 35.2
 HV7211
 HV7211_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6817002678(NAD 83)
 HV7211
 HV7211|---------------------------------------------------------------------|
 HV7211| PID    Reference Object                     Distance      Geod. Az  |
 HV7211|                                                           dddmmss.s |
 HV7211| HV7209 RHODE                               APPROX. 1.0 KM 0024522.5 |
 HV7211| HV7179 B BETA                              APPROX. 1.3 KM 1641324.4 |
 HV7211| CX2226 CHES RM                               8.710 METERS 30346     |
 HV7211|---------------------------------------------------------------------|
 HV7211
 HV7211                          SUPERSEDED SURVEY CONTROL
 HV7211
 HV7211  NAD 83(1986)-  38 51 47.03876(N)    076 31 10.07948(W) AD(       ) 3
 HV7211  NAD 27      -  38 51 46.63900(N)    076 31 11.22200(W) AD(       ) 3
 HV7211  USSD        -  38 51 47.00100(N)    076 31 11.04200(W) AD(       ) 3
 HV7211
 HV7211.Superseded values are not recommended for survey control.
 HV7211
 HV7211.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7211.See file dsdata.pdf to determine how the superseded data were derived.
 HV7211
 HV7211_MARKER: N = NAIL
 HV7211_SETTING: 0 = UNSPECIFIED SETTING
 HV7211
 HV7211  HISTORY     - Date     Condition        Report By
 HV7211  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7211  HISTORY     - 1956     MARK NOT FOUND   USGS
 HV7211  HISTORY     - 20031002 MARK NOT FOUND   USPSQD
 HV7211
 HV7211                          STATION DESCRIPTION
 HV7211
 HV7211'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7211'ON THE N SHORE OF WEST RIVER, ON POINT AT W SIDE OF ENTRANCE TO
 HV7211'RHODE RIVER, AND ABOUT 300 YARDS E OF ENTRANCE TO CHESTONS CREEK,
 HV7211'ABOUT 21 FEET BACK FROM EDGE OF BANK 15 FEET HIGH, AND ABOUT 2
 HV7211'YARDS NW OF TWIN LOCUST STUMP.
 HV7211'
 HV7211'STATION MARK IS NAIL IN PINE STUB FLUSH WITH GROUND.
 HV7211'
 HV7211'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7211'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7211'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7211'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7211'IS 8.71 METERS (28.58 FEET) FROM STATION IN BEARING N 56 DEG 15
 HV7211'MIN W.  DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV7211'REFERENCE ARE AS FOLLOWS--E CHIMNEY ON WHITE HOUSE ON OPPOSITE
 HV7211'SHORE, 1 MILE, S 27 DEG 5 MIN W.  CHIMNEY ON SMALL HOUSE, 200
 HV7211'YARDS, S 89 DEG 27 MIN W.  CHIMNEY ON SMALL HOUSE ON OPPOSITE
 HV7211'SHORE, 1 MILE, S 28 DEG 49 MIN E.  W CHIMNEY ON RED-ROOF HOUSE ON
 HV7211'OPPOSITE SHORE, 1 MILE, S 14 DEG 27 MIN E.
 HV7211
 HV7211                          STATION RECOVERY (1956)
 HV7211
 HV7211'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956
 HV7211'STATION AND M.S.F.C. REFERENCE MARK FOUND DESTROYED.  BANK WASHED
 HV7211'AWAY BY HURRICANE AND MARKS ASSUMED DESTROYED.
 HV7211
 HV7211                          STATION RECOVERY (2003)
 HV7211
 HV7211'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7211'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5373 ***********************************************************************
 JV5373  DESIGNATION -  CHESACO
 JV5373  PID         -  JV5373
 JV5373  STATE/COUNTY-  MD/BALTIMORE
 JV5373  COUNTRY     -  US
 JV5373  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5373
 JV5373                         *CURRENT SURVEY CONTROL
 JV5373  ______________________________________________________________________
 JV5373* NAD 83(1991) POSITION- 39 18 24.35401(N) 076 29 28.35564(W)   ADJUSTED
 JV5373* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5373  ______________________________________________________________________
 JV5373  GEOID HEIGHT    -        -32.952 (meters)                     GEOID18
 JV5373  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 JV5373  HORZ ORDER      -  THIRD
 JV5373
 JV5373.The horizontal coordinates were established by classical geodetic methods
 JV5373.and adjusted by the National Geodetic Survey in January 1992.
 JV5373
 JV5373.The orthometric height was scaled from a topographic map.
 JV5373
 JV5373.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5373.GEOID18 height accuracy estimate available here.
 JV5373
 JV5373.Click photographs - Photos may exist for this station.
 JV5373
 JV5373.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5373
 JV5373. The following values were computed from the NAD 83(1991) position.
 JV5373
 JV5373;                    North         East     Units Scale Factor Converg.
 JV5373;SPC MD       -   182,183.791   443,882.517   MT  0.99997808   +0 19 09.6
 JV5373;SPC MD       -   597,714.65  1,456,304.56   sFT  0.99997808   +0 19 09.6
 JV5373;UTM  18      - 4,351,879.527   371,430.051   MT  0.99980353   -0 56 41.2
 JV5373
 JV5373!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5373!SPC MD       -   1.00000521  x   0.99997808  =   0.99998329
 JV5373!UTM  18      -   1.00000521  x   0.99980353  =   0.99980874
 JV5373
 JV5373:                Primary Azimuth Mark                     Grid Az
 JV5373:SPC MD       -  LINE                                     174 12 05.4
 JV5373:UTM  18      -  LINE                                     175 27 56.2
 JV5373
 JV5373_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7143051879(NAD 83)
 JV5373
 JV5373|---------------------------------------------------------------------|
 JV5373| PID    Reference Object                     Distance      Geod. Az  |
 JV5373|                                                           dddmmss.s |
 JV5373| CB1081 CHESACO RM 1                         14.347 METERS 01910     |
 JV5373| JV5376 LINE                                APPROX. 0.7 KM 1743115.0 |
 JV5373|---------------------------------------------------------------------|
 JV5373
 JV5373                          SUPERSEDED SURVEY CONTROL
 JV5373
 JV5373  NAD 83(1986)-  39 18 24.34988(N)    076 29 28.36417(W) AD(       ) 3
 JV5373  NAD 27      -  39 18 23.96400(N)    076 29 29.49900(W) AD(       ) 3
 JV5373
 JV5373.Superseded values are not recommended for survey control.
 JV5373
 JV5373.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5373.See file dsdata.pdf to determine how the superseded data were derived.
 JV5373
 JV5373_MARKER: DS = TRIANGULATION STATION DISK
 JV5373_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5373_STAMPING: CHESACO 1934
 JV5373_MARK LOGO: CGS
 JV5373_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5373+STABILITY: SURFACE MOTION
 JV5373
 JV5373  HISTORY     - Date     Condition        Report By
 JV5373  HISTORY     - 1934     MONUMENTED       CGS
 JV5373  HISTORY     - 1964     GOOD             MDSRC
 JV5373  HISTORY     - 19961006 MARK NOT FOUND   USPSQD
 JV5373
 JV5373                          STATION DESCRIPTION
 JV5373
 JV5373'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5373'ON NORTHERN SHORE OF BACK RIVER, ON NORTHERN SHORE OF NORTHEAST
 JV5373'CREEK.  STATION IS IN YARD ON EXTREME SOUTHERN END OF POINT ON
 JV5373'CHESACO PARK, 10 FEET N AND 10 FEET E OF CONCRETE RETAINING WALL.
 JV5373'CHESACO PARK IS REAL ESTATE SUBDIVISION AND NOT PUBLIC PARK.
 JV5373'
 JV5373'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5373'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5373'
 JV5373'REFERENCE MARK IS 71 FEET E OF STATION AND 10 FEET N OF RETAINING
 JV5373'WALL.
 JV5373
 JV5373                          STATION RECOVERY (1964)
 JV5373
 JV5373'RECOVERY NOTE BY MD STATE ROADS COMM 1964
 JV5373'STATION RECOVERED IN GOOD CONDITION.  R.M. HAS BEEN DESTROYED.
 JV5373'
 JV5373'LOCATED AT THE HEAD OF BACK RIVER, ON WEST BANK OF THE ENTRANCE TO
 JV5373'NORTHEAST CREEK.  THE STATION IS IN THE YARD OF A FRAME HOUSE NEAR
 JV5373'THE RIVER, 105 FEET S OF THE S CORNER OF THE FRAME HOUSE, 13 FEET
 JV5373'N OF THE CORNER OF THE BULKHEADS, 8.6 FEET NE OF A CHISELED CROSS
 JV5373'ON THE BULKHEAD RUNNING NW TO SE AND 8.6 FEET NW OF THE CHISELED
 JV5373'CROSS ON THE BULKHEAD RUNNING NE TO SE.
 JV5373'
 JV5373'TO REACH FROM THE JUNCTION OF THE U.S. ROUTE 40 AND CHESACO AVE.,
 JV5373'GO S ON CHESACO AVE. FOR 0.9 MILE TO PATAPSCO ROAD RIGHT, THENCE
 JV5373'RIGHT ON PATAPASCO AVE. FOR 0.5 MILE TO THE T-JUNCTION OF
 JV5373'EDGEWATER AVE., THENCE RIGHT (W) ON EDGEWATER AVE. FOR
 JV5373'APPROXIMATELY 250 FEET TO THE T-JUNCTION OF CHOPTANK AVE., THENCE
 JV5373'LEFT (S) ON CHOPTANK AVE. TO END OF THE ROAD AT A ONE-STORY FRAME
 JV5373'HOUSE.
 JV5373
 JV5373                          STATION RECOVERY (1996)
 JV5373
 JV5373'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV5373'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6347 ***********************************************************************
 HV6347  DESIGNATION -  CHESAPEAKE BAY BRIDGE W TOWER
 HV6347  PID         -  HV6347
 HV6347  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6347  COUNTRY     -  US
 HV6347  USGS QUAD   -  ANNAPOLIS (2016)
 HV6347
 HV6347                         *CURRENT SURVEY CONTROL
 HV6347  ______________________________________________________________________
 HV6347* NAD 83(1991) POSITION- 38 59 37.85204(N) 076 23 05.66703(W)   ADJUSTED
 HV6347  ______________________________________________________________________
 HV6347  GEOID HEIGHT    -        -33.476 (meters)                     GEOID18
 HV6347  LAPLACE CORR    -         -2.23  (seconds)                    DEFLEC18
 HV6347  HORZ ORDER      -  THIRD
 HV6347
 HV6347.The horizontal coordinates were established by classical geodetic methods
 HV6347.and adjusted by the National Geodetic Survey in January 1992.
 HV6347
 HV6347.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6347.GEOID18 height accuracy estimate available here.
 HV6347
 HV6347.Click photographs - Photos may exist for this station.
 HV6347
 HV6347.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6347
 HV6347. The following values were computed from the NAD 83(1991) position.
 HV6347
 HV6347;                    North         East     Units Scale Factor Converg.
 HV6347;SPC MD       -   147,502.765   453,284.902   MT  0.99995196   +0 23 09.8
 HV6347;SPC MD       -   483,931.99  1,487,152.22   sFT  0.99995196   +0 23 09.8
 HV6347;UTM  18      - 4,317,006.031   380,065.588   MT  0.99977712   -0 52 17.5
 HV6347
 HV6347_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8006517006(NAD 83)
 HV6347
 HV6347                          SUPERSEDED SURVEY CONTROL
 HV6347
 HV6347  NAD 83(1986)-  38 59 37.84770(N)    076 23 05.67936(W) AD(       ) 3
 HV6347  NAD 27      -  38 59 37.43400(N)    076 23 06.81700(W) AD(       ) 3
 HV6347
 HV6347.Superseded values are not recommended for survey control.
 HV6347
 HV6347.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6347.See file dsdata.pdf to determine how the superseded data were derived.
 HV6347
 HV6347_MARKER: 55 = TOWER
 HV6347_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV6347_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6347+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2005
 HV6347
 HV6347  HISTORY     - Date     Condition        Report By
 HV6347  HISTORY     - 1957     FIRST OBSERVED   CGS
 HV6347  HISTORY     - 1965     GOOD             CGS
 HV6347  HISTORY     - 1981     GOOD             NOS
 HV6347  HISTORY     - 1984     GOOD             NOS
 HV6347  HISTORY     - 1987     GOOD             NOS
 HV6347  HISTORY     - 20010331 GOOD             NGS
 HV6347  HISTORY     - 20031002 GOOD             USPSQD
 HV6347  HISTORY     - 20050718 GOOD             USPSQD
 HV6347  HISTORY     - 20061006 GOOD             GEOCAC
 HV6347
 HV6347                          STATION DESCRIPTION
 HV6347
 HV6347'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV6347'STATION IS THE MOST W OF THE CHESAPEAKE BAY BRIDGE TOWERS WHICH
 HV6347'ARE THE SUPPORTING STRUCTURES FOR THE SUSPENSION CABLES FOR THE
 HV6347'HIGHEST SPAN OF THE BRIDGE.  THE POINT INTERSECTED WAS THE RED
 HV6347'LIGHT ON THE TOP OF AND AT THE CENTER OF THE TOWER.
 HV6347
 HV6347                          STATION RECOVERY (1965)
 HV6347
 HV6347'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (JKW)
 HV6347'STATION NOT VISITED, BUT APPEARS TO BE IN GOOD CONDITION.  THE
 HV6347'DESCRIPTION BY J.C.E. IN 1957 IS ADEQUATE FOR RECOVERY.
 HV6347
 HV6347                          STATION RECOVERY (1981)
 HV6347
 HV6347'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1981 (RHH)
 HV6347'THE STATION WAS RECOVERED AS DESCRIBED.
 HV6347
 HV6347                          STATION RECOVERY (1984)
 HV6347
 HV6347'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1984 (WVH)
 HV6347'RECOVERED AS DESCRIBED.
 HV6347'
 HV6347'RECOVERED BY B. LINK.
 HV6347
 HV6347                          STATION RECOVERY (1987)
 HV6347
 HV6347'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1987 (JDS)
 HV6347'THE STATION WAS RECOVERED AT THIS DATE.
 HV6347'STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.
 HV6347'
 HV6347'RECOVERED BY J.D. SHEA.
 HV6347
 HV6347                          STATION RECOVERY (2001)
 HV6347
 HV6347'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6347'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6347
 HV6347                          STATION RECOVERY (2003)
 HV6347
 HV6347'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6347'RECOVERED IN GOOD CONDITION.
 HV6347
 HV6347                          STATION RECOVERY (2005)
 HV6347
 HV6347'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6347'RECOVERED IN GOOD CONDITION.
 HV6347
 HV6347                          STATION RECOVERY (2006)
 HV6347
 HV6347'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 HV6347'NOTE - TOWER IS LOCATED ON THE ORIGINAL (EASTBOUND) SPAN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6354 ***********************************************************************
 HV6354  DESIGNATION -  CHESAPEAKE BAY BRIDGE E TOWER
 HV6354  PID         -  HV6354
 HV6354  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6354  COUNTRY     -  US
 HV6354  USGS QUAD   -  ANNAPOLIS (2016)
 HV6354
 HV6354                         *CURRENT SURVEY CONTROL
 HV6354  ______________________________________________________________________
 HV6354* NAD 83(1991) POSITION- 38 59 33.31151(N) 076 22 46.26406(W)   ADJUSTED
 HV6354  ______________________________________________________________________
 HV6354  GEOID HEIGHT    -        -33.485 (meters)                     GEOID18
 HV6354  LAPLACE CORR    -         -2.22  (seconds)                    DEFLEC18
 HV6354  HORZ ORDER      -  THIRD
 HV6354
 HV6354.The horizontal coordinates were established by classical geodetic methods
 HV6354.and adjusted by the National Geodetic Survey in January 1992.
 HV6354
 HV6354.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6354.GEOID18 height accuracy estimate available here.
 HV6354
 HV6354.Click photographs - Photos may exist for this station.
 HV6354
 HV6354.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6354
 HV6354. The following values were computed from the NAD 83(1991) position.
 HV6354
 HV6354;                    North         East     Units Scale Factor Converg.
 HV6354;SPC MD       -   147,365.916   453,752.752   MT  0.99995192   +0 23 22.0
 HV6354;SPC MD       -   483,483.01  1,488,687.15   sFT  0.99995192   +0 23 22.0
 HV6354;UTM  18      - 4,316,858.972   380,530.241   MT  0.99977575   -0 52 05.2
 HV6354
 HV6354_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8053016858(NAD 83)
 HV6354
 HV6354                          SUPERSEDED SURVEY CONTROL
 HV6354
 HV6354  NAD 83(1986)-  38 59 33.30898(N)    076 22 46.27605(W) AD(       ) 3
 HV6354  NAD 27      -  38 59 32.89200(N)    076 22 47.40900(W) AD(       ) 3
 HV6354
 HV6354.Superseded values are not recommended for survey control.
 HV6354
 HV6354.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6354.See file dsdata.pdf to determine how the superseded data were derived.
 HV6354
 HV6354_MARKER: 55 = TOWER
 HV6354_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV6354_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6354+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2005
 HV6354
 HV6354  HISTORY     - Date     Condition        Report By
 HV6354  HISTORY     - 1957     FIRST OBSERVED   CGS
 HV6354  HISTORY     - 1965     GOOD             CGS
 HV6354  HISTORY     - 1984     GOOD             NOS
 HV6354  HISTORY     - 19910720 GOOD             USPSQD
 HV6354  HISTORY     - 20010331 GOOD             NGS
 HV6354  HISTORY     - 20031002 GOOD             USPSQD
 HV6354  HISTORY     - 20050718 GOOD             USPSQD
 HV6354  HISTORY     - 20061006 GOOD             GEOCAC
 HV6354
 HV6354                          STATION DESCRIPTION
 HV6354
 HV6354'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV6354'STATION IS THE MOST E OF THE CHESAPEAKE BAY BRIDGE TOWERS WHICH
 HV6354'ARE THE SUPPORTING TOWERS FOR THE SUSPENSION CABLES FOR THE
 HV6354'HIGHEST SPAN OF THE BRIDGE.  THE POINT INTERSECTED WAS THE
 HV6354'RED LIGHT ON THE TOP AND AT THE CENTER OF THE TOWER.
 HV6354
 HV6354                          STATION RECOVERY (1965)
 HV6354
 HV6354'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (JKW)
 HV6354'STATION NOT VISITED, BUT APPEARS TO BE IN GOOD CONDITION.  THE
 HV6354'DESCRIPTION BY J.C.E. IN 1957 IS ADEQUATE FOR RECOVERY.
 HV6354
 HV6354                          STATION RECOVERY (1984)
 HV6354
 HV6354'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1984 (WVH)
 HV6354'RECOVERED AS DESCRIBED.
 HV6354'
 HV6354'RECOVERED BY B. DECROIX.
 HV6354
 HV6354                          STATION RECOVERY (1991)
 HV6354
 HV6354'RECOVERY NOTE BY US POWER SQUADRON 1991 (DTH)
 HV6354'RECOVERED IN GOOD CONDITION.
 HV6354
 HV6354                          STATION RECOVERY (2001)
 HV6354
 HV6354'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV6354'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV6354
 HV6354                          STATION RECOVERY (2003)
 HV6354
 HV6354'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6354'RECOVERED IN GOOD CONDITION.
 HV6354
 HV6354                          STATION RECOVERY (2005)
 HV6354
 HV6354'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV6354'RECOVERED IN GOOD CONDITION.
 HV6354
 HV6354                          STATION RECOVERY (2006)
 HV6354
 HV6354'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 HV6354'NOTE - TOWER IS LOCATED ON THE ORIGINAL (EASTBOUND) SPAN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8831 ***********************************************************************
 HV8831  DESIGNATION -  CHESAPEAKE BEACH LT 1
 HV8831  PID         -  HV8831
 HV8831  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV8831  COUNTRY     -  US
 HV8831  USGS QUAD   -  NORTH BEACH (2016)
 HV8831
 HV8831                         *CURRENT SURVEY CONTROL
 HV8831  ______________________________________________________________________
 HV8831* NAD 83(1993) POSITION- 38 41 30.53015(N) 076 31 16.49322(W)   ADJUSTED
 HV8831* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV8831  ______________________________________________________________________
 HV8831  GEOID HEIGHT    -        -33.718 (meters)                     GEOID18
 HV8831  LAPLACE CORR    -         -4.90  (seconds)                    DEFLEC18
 HV8831  HORZ ORDER      -  THIRD
 HV8831
 HV8831.The horizontal coordinates were established by classical geodetic methods
 HV8831.and adjusted by the National Geodetic Survey in November 1994.
 HV8831
 HV8831.The orthometric height was scaled from a topographic map.
 HV8831
 HV8831.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8831.GEOID18 height accuracy estimate available here.
 HV8831
 HV8831.Click photographs - Photos may exist for this station.
 HV8831
 HV8831.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8831
 HV8831. The following values were computed from the NAD 83(1993) position.
 HV8831
 HV8831;                    North         East     Units Scale Factor Converg.
 HV8831;SPC MD       -   113,904.573   441,649.795   MT  0.99995498   +0 18 01.7
 HV8831;SPC MD       -   373,701.92  1,448,979.37   sFT  0.99995498   +0 18 01.7
 HV8831;UTM  18      - 4,283,675.837   367,699.499   MT  0.99981554   -0 57 04.0
 HV8831
 HV8831!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8831!SPC MD       -   1.00000446  x   0.99995498  =   0.99995944
 HV8831!UTM  18      -   1.00000446  x   0.99981554  =   0.99982000
 HV8831
 HV8831_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6769983675(NAD 83)
 HV8831
 HV8831                          SUPERSEDED SURVEY CONTROL
 HV8831
 HV8831  NAD 83(1991)-  38 41 30.53016(N)    076 31 16.49322(W) AD(       ) 3
 HV8831  NAD 83(1986)-  38 41 30.52820(N)    076 31 16.50697(W) AD(       ) 3
 HV8831
 HV8831.Superseded values are not recommended for survey control.
 HV8831
 HV8831.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8831.See file dsdata.pdf to determine how the superseded data were derived.
 HV8831
 HV8831_MARKER: 14 = NAVIGATION LIGHT
 HV8831
 HV8831  HISTORY     - Date     Condition        Report By
 HV8831  HISTORY     - 1987     FIRST OBSERVED   NOS
 HV8831
 HV8831                          STATION DESCRIPTION
 HV8831
 HV8831'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (JDS)
 HV8831'STATION IS LOCATED NEAR THE W SHORELINE OF CHESAPEAKE BAY, JUST E
 HV8831'OF WEST BEACH.
 HV8831'
 HV8831'TO REACH STATION PROCEED BY BOAT TO LIGHT OFFSHORE OF WEST BEACH
 HV8831'WHICH MARKS THE ENTRANCE TO THE MARINA AT CHESAPEAKE BEACH.
 HV8831'
 HV8831'STATION IS A GREEN LIGHT ON TOP OF A WOOD PILE WITH THE NUMBER 1
 HV8831'SECURED TO IT.  IT IS LIGHT NO. 3477.55 IN LIGHT LIST VOL. I.
 HV8831'
 HV8831'DESCRIBED BY J.D. SHEA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1830 ***********************************************************************
 JU1830  DESIGNATION -  CHESAPEAKE CITY USE
 JU1830  PID         -  JU1830
 JU1830  STATE/COUNTY-  MD/CECIL
 JU1830  COUNTRY     -  US
 JU1830  USGS QUAD   -  ELKTON (2016)
 JU1830
 JU1830                         *CURRENT SURVEY CONTROL
 JU1830  ______________________________________________________________________
 JU1830* NAD 83(1986) POSITION- 39 31 45.     (N) 075 48 42.     (W)   SCALED
 JU1830* NAVD 88 ORTHO HEIGHT -     4.738 (meters)       15.54  (feet) ADJUSTED
 JU1830  ______________________________________________________________________
 JU1830  GEOID HEIGHT    -        -33.317 (meters)                     GEOID18
 JU1830  DYNAMIC HEIGHT  -          4.735 (meters)       15.53  (feet) COMP
 JU1830  MODELED GRAVITY -    980,132.0   (mgal)                       NAVD 88
 JU1830
 JU1830  VERT ORDER      -  FIRST     CLASS I
 JU1830
 JU1830.The horizontal coordinates were scaled from a map and have
 JU1830.an estimated accuracy of +/- 6 seconds.
 JU1830
 JU1830.The orthometric height was determined by differential leveling and
 JU1830.adjusted by the NATIONAL GEODETIC SURVEY
 JU1830.in June 1991.
 JU1830
 JU1830.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1830.GEOID18 height accuracy estimate available here.
 JU1830
 JU1830.Click photographs - Photos may exist for this station.
 JU1830
 JU1830.The dynamic height is computed by dividing the NAVD 88
 JU1830.geopotential number by the normal gravity value computed on the
 JU1830.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1830.degrees latitude (g = 980.6199 gals.).
 JU1830
 JU1830.The modeled gravity was interpolated from observed gravity values.
 JU1830
 JU1830;                    North         East    Units  Estimated Accuracy
 JU1830;SPC MD       -   207,420.      502,170.      MT  (+/- 180 meters Scaled)
 JU1830
 JU1830_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ302758(NAD 83)
 JU1830
 JU1830                          SUPERSEDED SURVEY CONTROL
 JU1830
 JU1830  NGVD 29 (11/26/84)    4.975  (m)           16.32   (f) ADJUSTED    1 1
 JU1830
 JU1830.Superseded values are not recommended for survey control.
 JU1830
 JU1830.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1830.See file dsdata.pdf to determine how the superseded data were derived.
 JU1830
 JU1830_MARKER: DD = SURVEY DISK
 JU1830_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JU1830_SP_SET: BRIDGE ABUTMENT
 JU1830_MARK LOGO: USACE
 JU1830_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1830
 JU1830  HISTORY     - Date     Condition        Report By
 JU1830  HISTORY     - UNK      MONUMENTED       DOD
 JU1830  HISTORY     - 1971     MARK NOT FOUND   NGS
 JU1830
 JU1830                          STATION DESCRIPTION
 JU1830
 JU1830'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1830'AT CHESAPEAKE CITY.
 JU1830'A THOROUGH SEARCH WAS MADE FOR THIS MARK BUT IT WAS NOT RECOVERED.
 JU1830'THE CONCRETE ABUTMENT IN WHICH THE MARK WAS SET HAS BEEN REMOVED
 JU1830'OR COVERED.  IT IS BELIEVED THE MARK IS EITHER DESTROYED OR
 JU1830'COVERED.  IN THE ABUTMENT THAT REMAINS OF THE OLD DRAWBRIDGE OVER
 JU1830'THE CHESAPEAKE-DELAWARE CANAL, IN THE NORTH END OF THE EAST
 JU1830'WINGWALL OF THE NORTH ABUTMENT.  A CORPS OF ENGINEERS, U.S. ARMY,
 JU1830'STANDARD DISK IN A DRILL HOLE AND THE DISK IS NOT STAMPED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5545 ***********************************************************************
 JV5545  DESIGNATION -  CHESAPEAKE PAPER BOARD CO TANK
 JV5545  PID         -  JV5545
 JV5545  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5545  COUNTRY     -  US
 JV5545  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5545
 JV5545                         *CURRENT SURVEY CONTROL
 JV5545  ______________________________________________________________________
 JV5545* NAD 83(1991) POSITION- 39 16 10.36031(N) 076 36 00.65060(W)   ADJUSTED
 JV5545  ______________________________________________________________________
 JV5545  GEOID HEIGHT    -        -32.793 (meters)                     GEOID18
 JV5545  LAPLACE CORR    -         -5.08  (seconds)                    DEFLEC18
 JV5545  HORZ ORDER      -  THIRD
 JV5545
 JV5545.The horizontal coordinates were established by classical geodetic methods
 JV5545.and adjusted by the National Geodetic Survey in January 1992.
 JV5545
 JV5545.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5545.GEOID18 height accuracy estimate available here.
 JV5545
 JV5545.Click photographs - Photos may exist for this station.
 JV5545
 JV5545.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5545
 JV5545. The following values were computed from the NAD 83(1991) position.
 JV5545
 JV5545;                    North         East     Units Scale Factor Converg.
 JV5545;SPC MD       -   178,004.904   434,502.085   MT  0.99997341   +0 15 03.4
 JV5545;SPC MD       -   584,004.42  1,425,528.92   sFT  0.99997341   +0 15 03.4
 JV5545;UTM  18      - 4,347,909.212   361,961.201   MT  0.99983462   -1 00 46.9
 JV5545
 JV5545_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6196147909(NAD 83)
 JV5545
 JV5545                          SUPERSEDED SURVEY CONTROL
 JV5545
 JV5545  NAD 83(1986)-  39 16 10.35670(N)    076 36 00.65954(W) AD(       ) 3
 JV5545  NAD 27      -  39 16 09.97200(N)    076 36 01.78100(W) AD(       ) 3
 JV5545
 JV5545.Superseded values are not recommended for survey control.
 JV5545
 JV5545.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5545.See file dsdata.pdf to determine how the superseded data were derived.
 JV5545
 JV5545_MARKER: 51 = TANK
 JV5545_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5545+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5545
 JV5545  HISTORY     - Date     Condition        Report By
 JV5545  HISTORY     - 1934     FIRST OBSERVED   CGS
 JV5545  HISTORY     - 1975     GOOD             NGS
 JV5545  HISTORY     - 20010822 GOOD             USPSQD
 JV5545  HISTORY     - 20110315 GOOD             GEOCAC
 JV5545
 JV5545                          STATION DESCRIPTION
 JV5545
 JV5545'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5545'IRON TANK OF THE CHESAPEAKE PAPER BOARD COMPANY, NEAR THE OVERHEAD
 JV5545'CROSSING OF FORT AVENUE OVER KEY HIGHWAY.
 JV5545
 JV5545                          STATION RECOVERY (1975)
 JV5545
 JV5545'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5545'STATION RECOVERED AS DESCRIBED.  OBSERVATIONS ON THE TANK INDICATE
 JV5545'RECOVERY OF THE STATION.
 JV5545
 JV5545                          STATION RECOVERY (2001)
 JV5545
 JV5545'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKL)
 JV5545'RECOVERED IN GOOD CONDITION.
 JV5545
 JV5545                          STATION RECOVERY (2011)
 JV5545
 JV5545'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5545'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5541 ***********************************************************************
 JV5541  DESIGNATION -  CHESAPEAKE USE 1915
 JV5541  PID         -  JV5541
 JV5541  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5541  COUNTRY     -  US
 JV5541  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5541
 JV5541                         *CURRENT SURVEY CONTROL
 JV5541  ______________________________________________________________________
 JV5541* NAD 83(1991) POSITION- 39 16 34.17714(N) 076 35 27.37589(W)   ADJUSTED
 JV5541* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5541  ______________________________________________________________________
 JV5541  GEOID HEIGHT    -        -32.806 (meters)                     GEOID18
 JV5541  LAPLACE CORR    -         -4.83  (seconds)                    DEFLEC18
 JV5541  HORZ ORDER      -  THIRD
 JV5541
 JV5541.The horizontal coordinates were established by classical geodetic methods
 JV5541.and adjusted by the National Geodetic Survey in January 1992.
 JV5541
 JV5541.The orthometric height was scaled from a topographic map.
 JV5541
 JV5541.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5541.GEOID18 height accuracy estimate available here.
 JV5541
 JV5541.Click photographs - Photos may exist for this station.
 JV5541
 JV5541.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5541
 JV5541. The following values were computed from the NAD 83(1991) position.
 JV5541
 JV5541;                    North         East     Units Scale Factor Converg.
 JV5541;SPC MD       -   178,742.900   435,296.403   MT  0.99997421   +0 15 24.3
 JV5541;SPC MD       -   586,425.66  1,428,134.95   sFT  0.99997421   +0 15 24.3
 JV5541;UTM  18      - 4,348,629.406   362,771.492   MT  0.99983187   -1 00 26.3
 JV5541
 JV5541!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5541!SPC MD       -   1.00000518  x   0.99997421  =   0.99997939
 JV5541!UTM  18      -   1.00000518  x   0.99983187  =   0.99983705
 JV5541
 JV5541:                Primary Azimuth Mark                     Grid Az
 JV5541:SPC MD       -  FELL ROOF USE                            040 09 35.8
 JV5541:UTM  18      -  FELL ROOF USE                            041 25 26.4
 JV5541
 JV5541_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6277148629(NAD 83)
 JV5541
 JV5541|---------------------------------------------------------------------|
 JV5541| PID    Reference Object                     Distance      Geod. Az  |
 JV5541|                                                           dddmmss.s |
 JV5541| JV5551 FELL ROOF USE                       453.816 METERS 0402500.1 |
 JV5541| JV5492 BALTIMORE AND OHIO PIER 9 USE       310.665 METERS 11631     |
 JV5541| JV5539 CONSOL USE 1915                     129.829 METERS 27945     |
 JV5541| JV5535 TERMINAL                            APPROX. 0.5 KM 3271149.1 |
 JV5541| JV5540 RECREATION USE 1916                 475.437 METERS 3481118.3 |
 JV5541|---------------------------------------------------------------------|
 JV5541
 JV5541                          SUPERSEDED SURVEY CONTROL
 JV5541
 JV5541  NAD 83(1986)-  39 16 34.17345(N)    076 35 27.38476(W) AD(       ) 3
 JV5541  NAD 27      -  39 16 33.78300(N)    076 35 28.49600(W) AD(       ) 3
 JV5541  USSD        -  39 16 34.14900(N)    076 35 28.33400(W) AD(       ) 3
 JV5541
 JV5541.Superseded values are not recommended for survey control.
 JV5541
 JV5541.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5541.See file dsdata.pdf to determine how the superseded data were derived.
 JV5541
 JV5541_MARKER: N = NAIL
 JV5541_SETTING: 0 = UNSPECIFIED SETTING
 JV5541_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5541
 JV5541  HISTORY     - Date     Condition        Report By
 JV5541  HISTORY     - 1915     MONUMENTED       USACE
 JV5541  HISTORY     - 20010822 MARK NOT FOUND   USPSQD
 JV5541
 JV5541                          STATION DESCRIPTION
 JV5541
 JV5541'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1915
 JV5541'AT THE S SIDE OF THE HARBOR, ON A TIMBER WHARF, BEHIND THE BUMPER
 JV5541'OF THE EASTERLY RAILROAD TRACK, 1.52 METERS (5.0 FEET) FROM THE
 JV5541'NE CORNER OF BUMPER, THE SAME DISTANCE FROM THE NW CORNER, AND
 JV5541'2.219 METERS (7.28 FEET) FROM THE NE CORNER OF THE BUMPER OF THE
 JV5541'W TRACK.  THE STATION IS MARKED BY A COPPER NAIL SURROUNDED BY
 JV5541'WIRE NAILS.  THIS STATION REPORTED LOST IN 1924.
 JV5541
 JV5541                          STATION RECOVERY (2001)
 JV5541
 JV5541'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKL)
 JV5541'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5190 ***********************************************************************
 JV5190  DESIGNATION -  CHEST
 JV5190  PID         -  JV5190
 JV5190  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5190  COUNTRY     -  US
 JV5190  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5190
 JV5190                         *CURRENT SURVEY CONTROL
 JV5190  ______________________________________________________________________
 JV5190* NAD 83(1991) POSITION- 39 04 44.31577(N) 076 29 34.05437(W)   ADJUSTED
 JV5190* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5190  ______________________________________________________________________
 JV5190  GEOID HEIGHT    -        -33.191 (meters)                     GEOID18
 JV5190  LAPLACE CORR    -         -3.15  (seconds)                    DEFLEC18
 JV5190  HORZ ORDER      -  THIRD
 JV5190
 JV5190.The horizontal coordinates were established by classical geodetic methods
 JV5190.and adjusted by the National Geodetic Survey in January 1992.
 JV5190
 JV5190.The orthometric height was scaled from a topographic map.
 JV5190
 JV5190.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5190.GEOID18 height accuracy estimate available here.
 JV5190
 JV5190.Click photographs - Photos may exist for this station.
 JV5190
 JV5190.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5190
 JV5190. The following values were computed from the NAD 83(1991) position.
 JV5190
 JV5190;                    North         East     Units Scale Factor Converg.
 JV5190;SPC MD       -   156,895.409   443,886.491   MT  0.99995612   +0 19 06.0
 JV5190;SPC MD       -   514,747.69  1,456,317.60   sFT  0.99995612   +0 19 06.0
 JV5190;UTM  18      - 4,326,601.270   370,877.238   MT  0.99980530   -0 56 28.2
 JV5190
 JV5190!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5190!SPC MD       -   1.00000509  x   0.99995612  =   0.99996121
 JV5190!UTM  18      -   1.00000509  x   0.99980530  =   0.99981039
 JV5190
 JV5190:                Primary Azimuth Mark                     Grid Az
 JV5190:SPC MD       -  ULM                                      146 20 25.9
 JV5190:UTM  18      -  ULM                                      147 36 00.1
 JV5190
 JV5190_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7087726601(NAD 83)
 JV5190
 JV5190|---------------------------------------------------------------------|
 JV5190| PID    Reference Object                     Distance      Geod. Az  |
 JV5190|                                                           dddmmss.s |
 JV5190| CB1082 CHEST RM                             24.960 METERS 02933     |
 JV5190| JV5233 ULM                                 APPROX. 1.9 KM 1463931.9 |
 JV5190|---------------------------------------------------------------------|
 JV5190
 JV5190                          SUPERSEDED SURVEY CONTROL
 JV5190
 JV5190  NAD 83(1986)-  39 04 44.31177(N)    076 29 34.06484(W) AD(       ) 3
 JV5190  NAD 27      -  39 04 43.91400(N)    076 29 35.20400(W) AD(       ) 3
 JV5190
 JV5190.Superseded values are not recommended for survey control.
 JV5190
 JV5190.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5190.See file dsdata.pdf to determine how the superseded data were derived.
 JV5190
 JV5190_MARKER: DS = TRIANGULATION STATION DISK
 JV5190_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5190
 JV5190  HISTORY     - Date     Condition        Report By
 JV5190  HISTORY     - 1933     MONUMENTED       CGS
 JV5190  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5190
 JV5190                          STATION DESCRIPTION
 JV5190
 JV5190'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5190'STATION IS ON THE N SHORE OF THE MAGOTHY RIVER, AT THE SE CORNER
 JV5190'OF CHEST NECK POINT, AT THE EASTERN SIDE OF THE ENTRANCE TO
 JV5190'BLACKHOLE CREEK, ON THE PROPERTY OF W.B. ATHEY, ON THE TOP OF A
 JV5190'BLUFF AND ABOUT 35 FEET BACK FROM ITS EDGE.  THE BLUFF IS
 JV5190'PROTECTED BY A CONCRETE RETAINING WALL, REBUILT IN 1933.
 JV5190'
 JV5190'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5190'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5190'
 JV5190'STATION AND REFERENCE MARKS ARE SET FLUSH WITH THE SURFACE OF THE
 JV5190'GROUND.
 JV5190'
 JV5190'DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 JV5190'REFERENCE ARE AS FOLLOWS--S FACE OF A 48-INCH TWIN OAK TREE, 45.35
 JV5190'METERS (148.8 FEET), S 30 DEG W.  SW ANGLE CONCRETE
 JV5190'RETAINING WALL AROUND POINT, 23.16 METERS (76.0 FEET), SW.  4-INCH
 JV5190'HOLLY TREE, 11.64 METERS (38.2 FEET), NW.  STATION, REFERENCE
 JV5190'MARK, AND 48-INCH TWIN OAK TREE ARE ON RANGE.
 JV5190
 JV5190                          STATION RECOVERY (1961)
 JV5190
 JV5190'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5190'STATION AND REFERENCE MARK COULD NOT BE FOUND.  THE AREA HAS
 JV5190'CHANGED DUE TO THE PLANTING OF TREES.  NEW SOIL ALSO HAS BEEN
 JV5190'ADDED IN PARTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5013 ***********************************************************************
 JV5013  DESIGNATION -  CHESTER
 JV5013  PID         -  JV5013
 JV5013  STATE/COUNTY-  MD/QUEEN ANNES
 JV5013  COUNTRY     -  US
 JV5013  USGS QUAD   -  CENTREVILLE (2017)
 JV5013
 JV5013                         *CURRENT SURVEY CONTROL
 JV5013  ______________________________________________________________________
 JV5013* NAD 83(1991) POSITION- 39 05 48.44930(N) 076 07 21.06571(W)   ADJUSTED
 JV5013* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5013  ______________________________________________________________________
 JV5013  GEOID HEIGHT    -        -33.566 (meters)                     GEOID18
 JV5013  LAPLACE CORR    -         -2.55  (seconds)                    DEFLEC18
 JV5013  HORZ ORDER      -  THIRD
 JV5013
 JV5013.The horizontal coordinates were established by classical geodetic methods
 JV5013.and adjusted by the National Geodetic Survey in January 1992.
 JV5013
 JV5013.The orthometric height was scaled from a topographic map.
 JV5013
 JV5013.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5013.GEOID18 height accuracy estimate available here.
 JV5013
 JV5013.Click photographs - Photos may exist for this station.
 JV5013
 JV5013.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5013
 JV5013. The following values were computed from the NAD 83(1991) position.
 JV5013
 JV5013;                    North         East     Units Scale Factor Converg.
 JV5013;SPC MD       -   159,115.969   475,905.003   MT  0.99995726   +0 33 02.7
 JV5013;SPC MD       -   522,032.97  1,561,365.00   sFT  0.99995726   +0 33 02.7
 JV5013;UTM  18      - 4,328,117.422   402,930.461   MT  0.99971602   -0 42 28.6
 JV5013
 JV5013!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5013!SPC MD       -   1.00000530  x   0.99995726  =   0.99996256
 JV5013!UTM  18      -   1.00000530  x   0.99971602  =   0.99972132
 JV5013
 JV5013:                Primary Azimuth Mark                     Grid Az
 JV5013:SPC MD       -  EVANS LOWER CHESTER RIVER                279 14 41.6
 JV5013:UTM  18      -  EVANS LOWER CHESTER RIVER                280 30 12.9
 JV5013
 JV5013_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0293028117(NAD 83)
 JV5013
 JV5013|---------------------------------------------------------------------|
 JV5013| PID    Reference Object                     Distance      Geod. Az  |
 JV5013|                                                           dddmmss.s |
 JV5013| JV5083 EVANS LOWER CHESTER RIVER           APPROX. 1.2 KM 2794744.3 |
 JV5013| JV5012 WESTCOTTS WINDMILL                  APPROX. 2.7 KM 3565419.8 |
 JV5013|---------------------------------------------------------------------|
 JV5013
 JV5013                          SUPERSEDED SURVEY CONTROL
 JV5013
 JV5013  NAD 83(1986)-  39 05 48.44362(N)    076 07 21.07767(W) AD(       ) 3
 JV5013  NAD 27      -  39 05 48.05000(N)    076 07 22.25200(W) AD(       ) 3
 JV5013  USSD        -  39 05 48.44100(N)    076 07 22.05200(W) AD(       ) 3
 JV5013
 JV5013.Superseded values are not recommended for survey control.
 JV5013
 JV5013.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5013.See file dsdata.pdf to determine how the superseded data were derived.
 JV5013
 JV5013_MARKER: H = DRILL HOLE
 JV5013_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5013_PROJECTION: PROJECTING 8 CENTIMETERS
 JV5013_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5013+STABILITY: SURFACE MOTION
 JV5013
 JV5013  HISTORY     - Date     Condition        Report By
 JV5013  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5013  HISTORY     - 1939     GOOD             CGS
 JV5013  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5013  HISTORY     - 20220714 POOR             INDIV
 JV5013
 JV5013                          STATION DESCRIPTION
 JV5013
 JV5013'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5013'STATION IS ON THE SOUTHEASTERN SHORE OF CHESTER RIVER, ABOUT 3/4
 JV5013'MILE E OF UPPER SPANIARD POINT AND 7/8 MILE S OF DEEP POINT, IN
 JV5013'A LOW MEADOW, ABOUT 2 FEET ABOVE HIGH WATER, 10 YARDS S OF SHORE,
 JV5013'2 YARDS S OF BOARD AND WIRE FENCE, 2 YARDS E OF RAIL FENCE, AND
 JV5013'35 YARDS NW OF GATE TO FRONT YARD OF A HOUSE.
 JV5013'
 JV5013'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5013'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5013'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5013'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5013'MARK IS THE CENTER OF A 2-INCH TILE PIPE, BURIED WITH THE TOP 2
 JV5013'INCHES BELOW THE BASE OF THE MONUMENT.
 JV5013'
 JV5013'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5013'FOLLOWS--NAIL IN BLAZE OF 12-INCH LOCUST TREE, 24.18 METERS (79.3
 JV5013'FEET), S 68 DEG 43 MIN W.  S CHIMNEY OF HOUSE, 2-1/4 MILES, N 73 DEG
 JV5013'51 MIN W.  E GABLE OF CLIFFS LANDING HOUSE, 1-1/8 MILES, N 56 DEG
 JV5013'34 MIN W. E GABLE OF HOUSE, 1-1/2 MILES, N 45 DEG 01 MIN W. CHIMNEY
 JV5013'OF HOUSE, 1-1/2 MILES, N 28 DEG 25 MIN W. S CHIMNEY OF WESCOTTS
 JV5013'HOUSE, 1-5/8 MILES, N 03 DEG 29 MIN W. W GABLE OF BARN, 1 MILE,
 JV5013'N 05 DEG 05 MIN E. LEFT TANGENT OF PILES OF INDIANTOWN WHARF,
 JV5013'1-1/2 MILES, N 36 DEG 29 MIN E. S CUPOLA OF BARN, 1-1/4 MILES,
 JV5013'N 59 DEG 25 MIN E. W CHIMNEY OF EMORY HOUSE, 1/2 MILE, N 78 DEG 33
 JV5013'MIN E. W CHIMNEY OF EMORYS TENANT HOUSE, 100 YARDS, S 41 DEG 56 MIN E.
 JV5013'NAIL IN BLAZE IN 6-INCH PERSIMMON TREE, 11.67 METERS (38.3
 JV5013'FEET), S 12 DEG 39 MIN E.
 JV5013
 JV5013                          STATION RECOVERY (1939)
 JV5013
 JV5013'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5013'STATION RECOVERED IN GOOD CONDITION.  IT IS BURIED IN SEVERAL
 JV5013'INCHES OF SAND, BUT WAS RECOVERED BY TAKING SEXTANT FIX ON NATURAL
 JV5013'OBJECTS, USING THE DIFFERENCES IN THE BEARINGS MENTIONED IN THE
 JV5013'ORIGINAL DESCRIPTION, AND CHECKING THE FIX BY THE MEASUREMENT,
 JV5013'NAIL IN BLAZE IN 6-INCH PERSIMMON TREE 11.67 METERS AND NAIL
 JV5013'IN BLAZE IN 12-INCH LOCUST TREE 24.18 METERS (THIS LOCUST TREE
 JV5013'HAS BEEN CUT DOWN, BUT A FEW INCHES OF THE STUMP REMAINS).
 JV5013'
 JV5013'DESCRIPTION SHOULD READ--LOCATED ON THE SOUTHEASTERN SHORE OF
 JV5013'CHESTER RIVER, ABOUT 3/4 MILE E OF UPPER SPANIARD POINT AND 7/8
 JV5013'MILE S OF DEEP POINT, JUST BACK OF A SAND BEACH AT THE FRONT YARD
 JV5013'OF A FORMER RESIDENCE, OF WHICH THE CELLAR HOLE REMAINS.  STATION
 JV5013'IS ABOUT 100 YARDS NW AND ACROSS A SMALL MARSH AND POND FROM
 JV5013'EMORYS TENANT HOUSE, 3 METERS S OF HIGH-WATER LINE, 20.55 METERS
 JV5013'WSW OF THE CORNER POST OF A FENCE, 11.67 METERS N OF A NAIL IN A
 JV5013'BLAZE IN 6-INCH PERSIMMON TREE, 24.2 METERS ENE OF THE STUMP
 JV5013'OF A LOCUST TREE NEAR THE FENCE LINE, 4.25 METERS S OF THE ROOT
 JV5013'MASS OF A LARGE TREE WASHED UP ON THE SHORE, 13.12 METERS WNW OF A
 JV5013'SLENDER CEDAR TREE.
 JV5013
 JV5013                          STATION RECOVERY (1961)
 JV5013
 JV5013'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5013'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  ALL OF THE REFERENCE
 JV5013'TREES HAVE BEEN DESTROYED.  THE CELLAR HOLE WHICH WAS MENTIONED
 JV5013'IN THE 1939 RECOVERY NOTE HAS EVIDENTLY BEEN FILLED IN.  RECOMMEND
 JV5013'THAT THIS STATION BE CLASSIFIED AS LOST.
 JV5013
 JV5013                          STATION RECOVERY (2022)
 JV5013
 JV5013'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2022 (EH)
 JV5013'MARKER SEEN AT LOW TIDE ON BEACH.  SITTING ABOUT 3" ABOVE SAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4991 ***********************************************************************
 JV4991  DESIGNATION -  CHESTERTOWN M P CHURCH SPIRE
 JV4991  PID         -  JV4991
 JV4991  STATE/COUNTY-  MD/KENT
 JV4991  COUNTRY     -  US
 JV4991  USGS QUAD   -  CHESTERTOWN (2017)
 JV4991
 JV4991                         *CURRENT SURVEY CONTROL
 JV4991  ______________________________________________________________________
 JV4991* NAD 83(1991) POSITION- 39 12 37.15911(N) 076 04 08.12200(W)   ADJUSTED
 JV4991  ______________________________________________________________________
 JV4991  GEOID HEIGHT    -        -33.441 (meters)                     GEOID18
 JV4991  LAPLACE CORR    -         -2.40  (seconds)                    DEFLEC18
 JV4991  HORZ ORDER      -  THIRD
 JV4991
 JV4991.The horizontal coordinates were established by classical geodetic methods
 JV4991.and adjusted by the National Geodetic Survey in January 1992.
 JV4991
 JV4991.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4991.GEOID18 height accuracy estimate available here.
 JV4991
 JV4991.Click photographs - Photos may exist for this station.
 JV4991
 JV4991.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4991
 JV4991. The following values were computed from the NAD 83(1991) position.
 JV4991
 JV4991;                    North         East     Units Scale Factor Converg.
 JV4991;SPC MD       -   171,764.733   480,412.484   MT  0.99996685   +0 35 03.8
 JV4991;SPC MD       -   563,531.46  1,576,153.29   sFT  0.99996685   +0 35 03.8
 JV4991;UTM  18      - 4,340,660.903   407,713.665   MT  0.99970486   -0 40 32.8
 JV4991
 JV4991_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0771340660(NAD 83)
 JV4991
 JV4991                          SUPERSEDED SURVEY CONTROL
 JV4991
 JV4991  NAD 83(1986)-  39 12 37.15049(N)    076 04 08.13368(W) AD(       ) 3
 JV4991  NAD 27      -  39 12 36.75800(N)    076 04 09.32200(W) AD(       ) 3
 JV4991  USSD        -  39 12 37.13000(N)    076 04 09.16000(W) AD(       ) 3
 JV4991
 JV4991.Superseded values are not recommended for survey control.
 JV4991
 JV4991.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4991.See file dsdata.pdf to determine how the superseded data were derived.
 JV4991
 JV4991_MARKER: 90 = CHURCH SPIRE
 JV4991
 JV4991  HISTORY     - Date     Condition        Report By
 JV4991  HISTORY     - 1896     FIRST OBSERVED   CGS
 JV4991  HISTORY     - 1990     GOOD             MDDNR
 JV4991  HISTORY     - 20011229 GOOD             USPSQD
 JV4991
 JV4991                          STATION DESCRIPTION
 JV4991
 JV4991'NO DESCRIPTIVE TEXT AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4999 ***********************************************************************
 JV4999  DESIGNATION -  CHESTERTOWN ME CHURCH SPIRE
 JV4999  PID         -  JV4999
 JV4999  STATE/COUNTY-  MD/KENT
 JV4999  COUNTRY     -  US
 JV4999  USGS QUAD   -  CHESTERTOWN (2017)
 JV4999
 JV4999                         *CURRENT SURVEY CONTROL
 JV4999  ______________________________________________________________________
 JV4999* NAD 83(1991) POSITION- 39 12 37.50468(N) 076 04 05.16861(W)   ADJUSTED
 JV4999  ______________________________________________________________________
 JV4999  GEOID HEIGHT    -        -33.441 (meters)                     GEOID18
 JV4999  LAPLACE CORR    -         -2.40  (seconds)                    DEFLEC18
 JV4999  HORZ ORDER      -  THIRD
 JV4999
 JV4999.The horizontal coordinates were established by classical geodetic methods
 JV4999.and adjusted by the National Geodetic Survey in January 1992.
 JV4999
 JV4999.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4999.GEOID18 height accuracy estimate available here.
 JV4999
 JV4999.Click photographs - Photos may exist for this station.
 JV4999
 JV4999.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4999
 JV4999. The following values were computed from the NAD 83(1991) position.
 JV4999
 JV4999;                    North         East     Units Scale Factor Converg.
 JV4999;SPC MD       -   171,776.112   480,483.225   MT  0.99996686   +0 35 05.6
 JV4999;SPC MD       -   563,568.79  1,576,385.38   sFT  0.99996686   +0 35 05.6
 JV4999;UTM  18      - 4,340,670.721   407,784.621   MT  0.99970470   -0 40 31.0
 JV4999
 JV4999_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0778440670(NAD 83)
 JV4999
 JV4999                          SUPERSEDED SURVEY CONTROL
 JV4999
 JV4999  NAD 83(1986)-  39 12 37.49605(N)    076 04 05.18033(W) AD(       ) 3
 JV4999  NAD 27      -  39 12 37.10200(N)    076 04 06.36800(W) AD(       ) 3
 JV4999  USSD        -  39 12 37.48000(N)    076 04 06.20000(W) AD(       ) 3
 JV4999
 JV4999.Superseded values are not recommended for survey control.
 JV4999
 JV4999.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4999.See file dsdata.pdf to determine how the superseded data were derived.
 JV4999
 JV4999_MARKER: 90 = CHURCH SPIRE
 JV4999_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4999+SATELLITE: SATELLITE OBSERVATIONS - August 14, 2005
 JV4999
 JV4999  HISTORY     - Date     Condition        Report By
 JV4999  HISTORY     - 1896     FIRST OBSERVED   CGS
 JV4999  HISTORY     - 1990     GOOD             MDDNR
 JV4999  HISTORY     - 20011229 GOOD             USPSQD
 JV4999  HISTORY     - 20050814 GOOD             USPSQD
 JV4999
 JV4999                          STATION DESCRIPTION
 JV4999
 JV4999'DESCRIBED BY MD DEPT OF NAT RES 1990 (LW)
 JV4999'RECOVERED IN GOOD CONDITION.
 JV4999
 JV4999                          STATION RECOVERY (2001)
 JV4999
 JV4999'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV4999'RECOVERED IN GOOD CONDITION.
 JV4999
 JV4999                          STATION RECOVERY (2005)
 JV4999
 JV4999'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 JV4999'CHRCH IS NOW THE 1ST UNITED METHODIST CHURCH. LOCATED AT 360 HIGH ST.
 JV4999'THE CHURCH IS RED BRICK WITH 4 WHITE COLUMNS AND A THREE TEIRED
 JV4999'STEEPLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4995 ***********************************************************************
 JV4995  DESIGNATION -  CHESTERTOWN WASH COLL CUP FLAG
 JV4995  PID         -  JV4995
 JV4995  STATE/COUNTY-  MD/KENT
 JV4995  COUNTRY     -  US
 JV4995  USGS QUAD   -  CHESTERTOWN (2017)
 JV4995
 JV4995                         *CURRENT SURVEY CONTROL
 JV4995  ______________________________________________________________________
 JV4995* NAD 83(1991) POSITION- 39 13 03.23736(N) 076 04 03.94093(W)   ADJUSTED
 JV4995  ______________________________________________________________________
 JV4995  GEOID HEIGHT    -        -33.432 (meters)                     GEOID18
 JV4995  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 JV4995  HORZ ORDER      -  THIRD
 JV4995
 JV4995.The horizontal coordinates were established by classical geodetic methods
 JV4995.and adjusted by the National Geodetic Survey in January 1992.
 JV4995
 JV4995.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4995.GEOID18 height accuracy estimate available here.
 JV4995
 JV4995.Click photographs - Photos may exist for this station.
 JV4995
 JV4995.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4995
 JV4995. The following values were computed from the NAD 83(1991) position.
 JV4995
 JV4995;                    North         East     Units Scale Factor Converg.
 JV4995;SPC MD       -   172,569.909   480,504.573   MT  0.99996760   +0 35 06.4
 JV4995;SPC MD       -   566,173.11  1,576,455.42   sFT  0.99996760   +0 35 06.4
 JV4995;UTM  18      - 4,341,463.649   407,823.412   MT  0.99970462   -0 40 30.6
 JV4995
 JV4995_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0782341463(NAD 83)
 JV4995
 JV4995                          SUPERSEDED SURVEY CONTROL
 JV4995
 JV4995  NAD 83(1986)-  39 13 03.22844(N)    076 04 03.95262(W) AD(       ) 3
 JV4995  NAD 27      -  39 13 02.83700(N)    076 04 05.13800(W) AD(       ) 3
 JV4995  USSD        -  39 13 03.20000(N)    076 04 04.98000(W) AD(       ) 3
 JV4995
 JV4995.Superseded values are not recommended for survey control.
 JV4995
 JV4995.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4995.See file dsdata.pdf to determine how the superseded data were derived.
 JV4995
 JV4995_MARKER: 83 = FLAGSTAFF
 JV4995
 JV4995  HISTORY     - Date     Condition        Report By
 JV4995  HISTORY     - 1896     FIRST OBSERVED   CGS
 JV4995  HISTORY     - 1990     POOR             MDDNR
 JV4995
 JV4995                          STATION DESCRIPTION
 JV4995
 JV4995'NO DESCRIPTIVE TEXT AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6054 ***********************************************************************
 JV6054  DESIGNATION -  CHESTNUT
 JV6054  PID         -  JV6054
 JV6054  STATE/COUNTY-  MD/HOWARD
 JV6054  COUNTRY     -  US
 JV6054  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6054
 JV6054                         *CURRENT SURVEY CONTROL
 JV6054  ______________________________________________________________________
 JV6054* NAD 83(1991) POSITION- 39 17 43.60597(N) 076 47 47.10287(W)   ADJUSTED
 JV6054* NAVD 88 ORTHO HEIGHT -   168.    (meters)      551.    (feet) SCALED
 JV6054  ______________________________________________________________________
 JV6054  GEOID HEIGHT    -        -32.208 (meters)                     GEOID18
 JV6054  LAPLACE CORR    -         -3.00  (seconds)                    DEFLEC18
 JV6054  HORZ ORDER      -  SECOND
 JV6054
 JV6054.The horizontal coordinates were established by classical geodetic methods
 JV6054.and adjusted by the National Geodetic Survey in January 1992.
 JV6054
 JV6054.The orthometric height was scaled from a topographic map.
 JV6054
 JV6054.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6054.GEOID18 height accuracy estimate available here.
 JV6054
 JV6054.Click photographs - Photos may exist for this station.
 JV6054
 JV6054.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6054
 JV6054. The following values were computed from the NAD 83(1991) position.
 JV6054
 JV6054;                    North         East     Units Scale Factor Converg.
 JV6054;SPC MD       -   180,824.475   417,561.621   MT  0.99997662   +0 07 40.0
 JV6054;SPC MD       -   593,254.97  1,369,950.08   sFT  0.99997662   +0 07 40.0
 JV6054;UTM  18      - 4,351,101.679   345,088.968   MT  0.99989548   -1 08 16.6
 JV6054
 JV6054!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6054!SPC MD       -   0.99997873  x   0.99997662  =   0.99995535
 JV6054!UTM  18      -   0.99997873  x   0.99989548  =   0.99987421
 JV6054
 JV6054:                Primary Azimuth Mark                     Grid Az
 JV6054:SPC MD       -  FIELD                                    349 05 07.7
 JV6054:UTM  18      -  FIELD                                    350 21 04.3
 JV6054
 JV6054_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4508851101(NAD 83)
 JV6054
 JV6054|---------------------------------------------------------------------|
 JV6054| PID    Reference Object                     Distance      Geod. Az  |
 JV6054|                                                           dddmmss.s |
 JV6054| JV6039 RANDALLSTOWN RAD WBAL CEN MAST      APPROX. 9.2 KM 0130437.0 |
 JV6054| JV5625 BALTIMORE RADIO STA WITH MAST       APPROX. 5.0 KM 1024823.5 |
 JV6054| JV6055 HOLLO                                 7.656 METERS 19601     |
 JV6054| CB1083 CHESTNUT RM 1                        27.122 METERS 25955     |
 JV6054| CB1084 CHESTNUT RM 2                        29.274 METERS 31428     |
 JV6054| JV6052 FIELD                               APPROX. 0.9 KM 3491247.7 |
 JV6054|---------------------------------------------------------------------|
 JV6054
 JV6054                          SUPERSEDED SURVEY CONTROL
 JV6054
 JV6054  NAD 83(1986)-  39 17 43.60353(N)    076 47 47.11116(W) AD(       ) 2
 JV6054  NAD 27      -  39 17 43.22350(N)    076 47 48.20170(W) AD(       ) 2
 JV6054
 JV6054.Superseded values are not recommended for survey control.
 JV6054
 JV6054.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6054.See file dsdata.pdf to determine how the superseded data were derived.
 JV6054
 JV6054_MARKER: DS = TRIANGULATION STATION DISK
 JV6054_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6054_STAMPING: CHESTNUT 1957
 JV6054_MARK LOGO: CGS
 JV6054_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6054+STABILITY: SURFACE MOTION
 JV6054_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6054+SATELLITE: SATELLITE OBSERVATIONS - September 22, 2003
 JV6054
 JV6054  HISTORY     - Date     Condition        Report By
 JV6054  HISTORY     - 1957     MONUMENTED       CGS
 JV6054  HISTORY     - 20030922 GOOD             USPSQD
 JV6054
 JV6054                          STATION DESCRIPTION
 JV6054
 JV6054'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6054'STATION IS LOCATED ABOUT 2 MILES NORTH OF ELLICOTT CITY, ABOUT
 JV6054'4.25 MILES WEST OF THE WEST EDGE OF BALTIMORE AND 0.5 MILE SOUTHWEST
 JV6054'OF THE PATAPSCO RIVER ON A HIGH HILL KNOWN AS CHESTNUT HILL, AT
 JV6054'THE HOLO FIELD LOOKOUT TOWER.  STATION IS 17 FEET NORTHEAST OF
 JV6054'NORTHWEST LEG OF LOOKOUT TOWER, 18 FEET NORTH-NORTHWEST OF
 JV6054'NORTHEAST LEG OF LOOKOUT TOWER AND 19 FEET SOUTH OF A UTILITY POLE.
 JV6054'THE MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED CHESTNUT
 JV6054'1957.
 JV6054'
 JV6054'REFERENCE MARK NO.1 IS 17 FEET SOUTH OF APPROXIMATE CENTERLINE OF
 JV6054'ROAD, 13 FEET SOUTH-SOUTHEAST OF 18 INCH TREE AND 9-1/2 FEET EAST
 JV6054'OF A 12 INCH TREE.  THE MARK PROJECTS ABOUT 3 INCHES AND THE DISK
 JV6054'IS STAMPED CHESTNUT NO 1 1957.
 JV6054'
 JV6054'REFERENCE MARK NO. 2 IS 6-1/2 FEET NORTH OF 18 INCH TREE AND
 JV6054'10-1/2 FEET WEST OF APPROXIMATE CENTERLINE OF ROAD.  THE MARK
 JV6054'PROJECTS ABOUT 3 INCHES AND THE DISK IS STAMPED CHESTNUT NO 2 1957.
 JV6054'
 JV6054'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY 40 AND 29, ABOUT 1
 JV6054'MILE NORTHWEST OF ELLICOTT CITY, GO EAST ON U.S. HIGHWAY 40 FOR 0.3
 JV6054'MILE TO ROUTE 99, TURN LEFT ON ROUTE 99 (ROGER AVE.) AND GO NORTH
 JV6054'FOR 1.05 MILES TO ROAD RIGHT JUST BEFORE REACHING CHURCH ON RIGHT,
 JV6054'TURN SHARP RIGHT AND GO EASTERLY 0.75 MILE TO END OF BLACKTOP AND
 JV6054'A LOCKED GATE IN A ROAD ON LEFT, TURN LEFT THROUGHT GATE AND GO
 JV6054'0.05 MILE TO FORK, TURN RIGHT NORTHERLY 0.05 TO STATION ON RIGHT AS
 JV6054'DESCRIBED.
 JV6054'
 JV6054'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6054
 JV6054                          STATION RECOVERY (2003)
 JV6054
 JV6054'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV6054'THE STATION AND REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 JV6054'CONDITION.  NOTE-- THE HOLOFIELD LOOKOUT TOWER WAS TAKEN DOWN IN ABOUT
 JV6054'1985 AND REPLACED WITH A DNR SAFETY DEPARTMENT COMMUNICATIONS TOWER
 JV6054'BUILD IN 1987.  THE DNR COMMUNICATIONS TOWER IS A THREE-LEGGED
 JV6054'SELF-SUPPORTING TOWER 250 FEET HIGH PAINTED IN ALTERNATE SECTIONS OF
 JV6054'RED AND WHITE WITH A RED LIGHT ATOP.
 JV6054'THE STATION IS WITHIN A SECURITY FENCE (CALL THE DNR COMMUNICATIONS
 JV6054'CENTER AT 410-260-8888 FOR ENTRY), 9 FEET SOUTH OF THE SOUTH WALL OF A
 JV6054'CONCRETE BLOCK BUILDING, 5.5 FEET NORTH OF THE NORTHERN LEG OF THE
 JV6054'TOWER, AND UNDER A CABLE RUNNING FROM THE TOWER TO THE BUILDING.
 JV6054'REFERENCE MARK 1 IS OUTSIDE THE SECURITY FENCE ABOUT 51 FEET WEST OF
 JV6054'THE SOUTHWEST CORNER OF THE FENCE, 1.5 FEET EAST FROM AN ORANGE
 JV6054'FIBERGLASS WITNESS POST, AND PROJECTS 5 INCHES.
 JV6054'REFERENCE MARK 2 IS OUTSIDE THE SECURITY FENCE ABOUT 78 FEET NORTH OF
 JV6054'REFERENCE MARK 1, 1.5 FEET EAST FROM AN ORANGE FIBERGLASS WITNESS
 JV6054'POST, AND PROJECTS 5 INCHES.
 JV6054'TO REACH THE STATION FROM THE JUNCTION OF ROGERS AVENUE (HIGHWAY 99)
 JV6054'AND CHURCH LANE ROAD JUST SOUTH OF THE ROGERS AVENUE BRIDGE OVER
 JV6054'INTERSTATE 70, GO EAST ON CHURCH LANE ROAD BEYOND THE EASTERN DRIVEWAY
 JV6054'TO -8237 CHURCH LANE ROAD- TO THE LOCKED GATE OVER THE FIELD ROAD TO
 JV6054'THE LEFT.  NOTE-- THERE IS NO CHURCH PRESENT AT THE JUNCTION OF ROGERS
 JV6054'AVENUE AND CHURCH LANE ROAD AS DESCRIBED IN 1957.
 JV6054'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6594 ***********************************************************************
 HV6594  DESIGNATION -  CHESTNUT 1908
 HV6594  PID         -  HV6594
 HV6594  STATE/COUNTY-  MD/ST MARYS
 HV6594  COUNTRY     -  US
 HV6594  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6594
 HV6594                         *CURRENT SURVEY CONTROL
 HV6594  ______________________________________________________________________
 HV6594* NAD 83(1993) POSITION- 38 09 49.51758(N) 076 25 05.28467(W)   ADJUSTED
 HV6594* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6594  ______________________________________________________________________
 HV6594  GEOID HEIGHT    -        -34.844 (meters)                     GEOID18
 HV6594  LAPLACE CORR    -         -5.93  (seconds)                    DEFLEC18
 HV6594  HORZ ORDER      -  THIRD
 HV6594
 HV6594.The horizontal coordinates were established by classical geodetic methods
 HV6594.and adjusted by the National Geodetic Survey in November 1994.
 HV6594
 HV6594.The orthometric height was scaled from a topographic map.
 HV6594
 HV6594.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6594.GEOID18 height accuracy estimate available here.
 HV6594
 HV6594.Click photographs - Photos may exist for this station.
 HV6594
 HV6594.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6594
 HV6594. The following values were computed from the NAD 83(1993) position.
 HV6594
 HV6594;                    North         East     Units Scale Factor Converg.
 HV6594;SPC MD       -    55,341.851   450,993.820   MT  1.00002649   +0 21 54.7
 HV6594;SPC MD       -   181,567.39  1,479,635.56   sFT  1.00002649   +0 21 54.7
 HV6594;UTM  18      - 4,224,934.345   375,765.913   MT  0.99979008   -0 52 35.0
 HV6594
 HV6594!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6594!SPC MD       -   1.00000536  x   1.00002649  =   1.00003185
 HV6594!UTM  18      -   1.00000536  x   0.99979008  =   0.99979543
 HV6594
 HV6594:                Primary Azimuth Mark                     Grid Az
 HV6594:SPC MD       -  ROCK                                     280 23 32.3
 HV6594:UTM  18      -  ROCK                                     281 38 02.0
 HV6594
 HV6594_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7576524934(NAD 83)
 HV6594
 HV6594|---------------------------------------------------------------------|
 HV6594| PID    Reference Object                     Distance      Geod. Az  |
 HV6594|                                                           dddmmss.s |
 HV6594| HV6592 SMOKE                               322.548 METERS 24853     |
 HV6594| HV6596 ROCK                                APPROX. 0.8 KM 2804527.0 |
 HV6594| HV6595 SLEEP 1908                          407.188 METERS 3293015.6 |
 HV6594|---------------------------------------------------------------------|
 HV6594
 HV6594                          SUPERSEDED SURVEY CONTROL
 HV6594
 HV6594  NAD 83(1991)-  38 09 49.51667(N)    076 25 05.28766(W) AD(       ) 3
 HV6594  NAD 83(1986)-  38 09 49.51747(N)    076 25 05.30134(W) AD(       ) 3
 HV6594  NAD 27      -  38 09 49.12600(N)    076 25 06.51100(W) AD(       ) 3
 HV6594  USSD        -  38 09 49.50700(N)    076 25 06.22000(W) AD(       ) 3
 HV6594
 HV6594.Superseded values are not recommended for survey control.
 HV6594
 HV6594.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6594.See file dsdata.pdf to determine how the superseded data were derived.
 HV6594
 HV6594_MARKER: Z = SEE DESCRIPTION
 HV6594_SETTING: 0 = UNSPECIFIED SETTING
 HV6594_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6594
 HV6594  HISTORY     - Date     Condition        Report By
 HV6594  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6594  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6594  HISTORY     - 1958     SEE DESCRIPTION  LOCENG
 HV6594  HISTORY     - 1989     POOR             MDDNR
 HV6594
 HV6594                          STATION DESCRIPTION
 HV6594
 HV6594'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6594'STATION IS ON THE SOUTHERN SHORE OF UPPER ST. INIGOES CREEK,
 HV6594'ABOUT 1/2 MILE ENE OF GRASON WHARF, NEAR THE ENTRANCE TO AN
 HV6594'EASTERN BRANCH OF CREEK, AND 1-1/4 MILES NE OF ST. MARYS
 HV6594'RIVER.  STATION IS IN A CULTIVATED FIELD FRINGED BY TALL TREES,
 HV6594'ABOUT 20 FEET ABOVE HIGH WATER, 18 YARDS S OF EDGE OF BANK, 70
 HV6594'YARDS SW OF CORNER OF FIELD, 80 YARDS WSW OF EDGE OF BANK,
 HV6594'95 YARDS NE OF TREES AT HOLLOW, 110 YARDS SW OF A POINT, AND
 HV6594'150 YARDS E BY N OF POINT WHERE RAIL FENCE MEETS TREES.
 HV6594'
 HV6594'SUBSURFACE MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV6594'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6594'SQUARE CONCRETE POST 2 FEET LONG, ABOUT 12 INCHES BELOW SURFACE
 HV6594'OF GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK
 HV6594'IN TOP OF POST.  SURFACE MARK IS CENTER OF 3-INCH SQUARE
 HV6594'WOODEN BOX.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV6594'REFERENCE ARE AS FOLLOWS--JUNCTION OF FENCES, 150 YARDS, S 27 DEG
 HV6594'41 MIN W.  NAIL IN BLAZE IN 22-INCH PINE TREE, 18.58 METERS (61.0
 HV6594'FEET), N 72 DEG 00 MIN W.  NAIL IN BLAZE IN 18-INCH CEDAR TREE,
 HV6594'16.46 METERS (54.0 FEET), N 42 DEG 22 MIN W.  NAIL IN BLAZE
 HV6594'IN 14-INCH PINE TREE, 21.10 METERS (69.2 FEET), N 06 DEG 04 MIN W.
 HV6594'TANGENT OF TREES, 100 YARDS,  S 20 DEG 07 MIN E
 HV6594
 HV6594                          STATION RECOVERY (1942)
 HV6594
 HV6594'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6594'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DISCRIPTION--
 HV6594'
 HV6594'(1) THERE IS NOW A WIRE FENCE, INSTEAD OF A RAIL FENCE.
 HV6594'
 HV6594'(2) THE SURFACE MARKER HAS BEEN DESTROYED.
 HV6594'
 HV6594'(3) DELETE THE 18-INCH CEDAR TREE AND THE 14-INCH PINE TREE
 HV6594'SINCE THEY NO LONGER EXIST.
 HV6594'
 HV6594'THE STATION IS LOCATED ABOUUT 3 MILES FROM ST. INIGOES POST
 HV6594'OFFICE ON THE SOUTHERN SHORE OF ST. INIGOES CREEK, NEAR THE
 HV6594'ENTRANCE TO AN EASTERN BRANCH OF THE CREEK, IN A CULTIVATED FIELD
 HV6594'FRINGED BY TALL TREES, ABOUT 18 YARDS S OF THE EDGE OF THE BANK
 HV6594'ABOUT 70 YARDS SW OF THE CORNER OF FIELD, ABOUT 80 YARDS SW OF
 HV6594'EDGE OF BANK, ABOUT 95 YARDS NE OF TREES AT HOLLOW, ABOUT 110
 HV6594'YARDS SW OF THE POINT, ABOUT 150 YARDS E OF POINT WHERE WIRE
 HV6594'FENCE MEETS TREES, 104 FEET SW OF THE SW CORNER OF WOOD SHED,
 HV6594'NAIL IN BLAZE IN 22-INCH PINE TREE, 61.10 FEET SCREW IN BLAZE
 HV6594'IN 18-INCH PINE TREE AT TOP OF BANK 54.00 FEET, AND ABOUT 20
 HV6594'FEET ABOVE HIGH WATER.
 HV6594'
 HV6594'THE STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6594'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN
 HV6594'8-INCH SQUARE CONCRETE MONUMENT, WHICH IS 14 INCHES UNDER THE
 HV6594'SURFACE OF THE GROUND.  THE LETTERS M.S.F.S. AND U.S.C.S. ARE
 HV6594'COUNTERSUNK IN THE TOP OF THE MONUMENT.  THE STATION IS IN
 HV6594'GOOD CONDITION.
 HV6594
 HV6594                          STATION RECOVERY (1958)
 HV6594
 HV6594'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1958
 HV6594'RECOVERED BY T.G. OYSTER AND ASSOC.
 HV6594'
 HV6594'STATION CHESTNUT FOUND 14 IN BELOW SURFACE, 50 FEET SOUTH OF BANK
 HV6594'OF RIVER, IN OPEN FIELD.
 HV6594'
 HV6594'93.5 FEET S.W. OF COR SHED.
 HV6594'
 HV6594'96.0 FEET S.W. OF NAIL IN POWER POLE NO. 18.
 HV6594'
 HV6594'55.3 FEET SOUTH OF NAIL IN 12 IN PINE.
 HV6594
 HV6594                          STATION RECOVERY (1989)
 HV6594
 HV6594'RECOVERY NOTE BY MD DEPT OF NAT RES 1989 (LW)
 HV6594'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1619 ***********************************************************************
 JU1619  DESIGNATION -  CHESTNUT AZ MK
 JU1619  PID         -  JU1619
 JU1619  STATE/COUNTY-  MD/CECIL
 JU1619  COUNTRY     -  US
 JU1619  USGS QUAD   -  NEWARK WEST (2016)
 JU1619
 JU1619                         *CURRENT SURVEY CONTROL
 JU1619  ______________________________________________________________________
 JU1619* NAD 83(1986) POSITION- 39 39 27.     (N) 075 47 05.     (W)   SCALED
 JU1619* NAVD 88 ORTHO HEIGHT -    38.856 (meters)      127.48  (feet) ADJUSTED
 JU1619  ______________________________________________________________________
 JU1619  GEOID HEIGHT    -        -33.043 (meters)                     GEOID18
 JU1619  DYNAMIC HEIGHT  -         38.838 (meters)      127.42  (feet) COMP
 JU1619  MODELED GRAVITY -    980,151.3   (mgal)                       NAVD 88
 JU1619
 JU1619  VERT ORDER      -  SECOND    CLASS 0
 JU1619
 JU1619.The horizontal coordinates were scaled from a map and have
 JU1619.an estimated accuracy of +/- 6 seconds.
 JU1619
 JU1619.The orthometric height was determined by differential leveling and
 JU1619.adjusted by the NATIONAL GEODETIC SURVEY
 JU1619.in June 1991.
 JU1619
 JU1619.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1619.GEOID18 height accuracy estimate available here.
 JU1619
 JU1619.Click photographs - Photos may exist for this station.
 JU1619
 JU1619.The dynamic height is computed by dividing the NAVD 88
 JU1619.geopotential number by the normal gravity value computed on the
 JU1619.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1619.degrees latitude (g = 980.6199 gals.).
 JU1619
 JU1619.The modeled gravity was interpolated from observed gravity values.
 JU1619
 JU1619;                    North         East    Units  Estimated Accuracy
 JU1619;SPC MD       -   221,700.      504,300.      MT  (+/- 180 meters Scaled)
 JU1619
 JU1619_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ326900(NAD 83)
 JU1619
 JU1619                          SUPERSEDED SURVEY CONTROL
 JU1619
 JU1619  NGVD 29 (11/26/84)   39.193  (m)          128.59   (f) ADJUSTED    2 0
 JU1619
 JU1619.Superseded values are not recommended for survey control.
 JU1619
 JU1619.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1619.See file dsdata.pdf to determine how the superseded data were derived.
 JU1619
 JU1619_MARKER: DZ = AZIMUTH MARK DISK
 JU1619_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1619_STAMPING: CHESTNUT 1958
 JU1619_MARK LOGO: CGS
 JU1619_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1619+STABILITY: SURFACE MOTION
 JU1619
 JU1619  HISTORY     - Date     Condition        Report By
 JU1619  HISTORY     - 1958     MONUMENTED       CGS
 JU1619  HISTORY     - 1964     GOOD             CGS
 JU1619  HISTORY     - 19930130 GOOD             USPSQD
 JU1619  HISTORY     - 20050425 MARK NOT FOUND   DEWDAV
 JU1619
 JU1619                          STATION DESCRIPTION
 JU1619
 JU1619'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1619'3.4 MI NE FROM ELKTON.
 JU1619'0.15 MILE EAST ALONG MAIN STREET FROM THE POST OFFICE AT ELKTON,
 JU1619'3.3 MILES NORTH AND NORTHEASTERLY ALONG STATE STREET AND STATE
 JU1619'HIGHWAY 279, OR 0.2 MILE NORTHEAST OF THE NORTHEASTERN EXPRESSWAY
 JU1619'OVERPASS.  NEAR NORTH END OF THE NORTHEAST RAMP OF THE EXPRESSWAY,
 JU1619'84 FEET SOUTHWEST OF POWERLINE POLE NO. 33, 77 FEET NORTHEAST OF
 JU1619'THE EXPRESSWAY LIGHT POST, 76 FEET SOUTHEAST OF CENTERLINE OF
 JU1619'THE HIGHWAY, 13 FEET WEST OF THE RIGHT-OF-WAY FENCE AND 2.5 FEET
 JU1619'NORTHEAST OF A METAL WITNESS POST.  A STANDARD AZIMUTH MARK DISK
 JU1619'IN THE TOP OF A CONCRETE MONUMENT AND FLUSH WITH THE GROUND.
 JU1619
 JU1619                          STATION RECOVERY (1993)
 JU1619
 JU1619'RECOVERY NOTE BY US POWER SQUADRON 1993 (DMM)
 JU1619'RECOVERED IN GOOD CONDITION.
 JU1619
 JU1619                          STATION RECOVERY (2005)
 JU1619
 JU1619'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (KEC)
 JU1619'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7199 ***********************************************************************
 JV7199  DESIGNATION -  CHEVES
 JV7199  PID         -  JV7199
 JV7199  STATE/COUNTY-  MD/FREDERICK
 JV7199  COUNTRY     -  US
 JV7199  USGS QUAD   -  WALKERSVILLE (2016)
 JV7199
 JV7199                         *CURRENT SURVEY CONTROL
 JV7199  ______________________________________________________________________
 JV7199* NAD 83(2011) POSITION- 39 22 47.08776(N) 077 15 12.44039(W)   ADJUSTED
 JV7199* NAD 83(2011) ELLIP HT-   129.251 (meters)        (06/27/12)   ADJUSTED
 JV7199* NAD 83(2011) EPOCH   -  2010.00
 JV7199* NAVD 88 ORTHO HEIGHT -   161.4   (meters)      530.    (feet) GPS OBS
 JV7199  ______________________________________________________________________
 JV7199  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7199  GEOID HEIGHT    -        -32.530 (meters)                     GEOID93
 JV7199  GEOID HEIGHT    -        -32.188 (meters)                     GEOID18
 JV7199  NAD 83(2011) X  -  1,089,245.875 (meters)                     COMP
 JV7199  NAD 83(2011) Y  - -4,815,123.248 (meters)                     COMP
 JV7199  NAD 83(2011) Z  -  4,025,074.660 (meters)                     COMP
 JV7199  LAPLACE CORR    -          5.73  (seconds)                    DEFLEC18
 JV7199
 JV7199  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7199  Standards:
 JV7199         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7199            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7199  -------------------------------------------------------------------
 JV7199  NETWORK    1.79   2.04           0.77   0.68   1.04      0.18188648
 JV7199  -------------------------------------------------------------------
 JV7199  Click here for local accuracies and other accuracy information.
 JV7199
 JV7199.The horizontal coordinates were established by GPS observations
 JV7199.and adjusted by the National Geodetic Survey in June 2012.
 JV7199
 JV7199.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7199.been affixed to the stable North American tectonic plate. See 
 JV7199.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7199
 JV7199.The horizontal coordinates are valid at the epoch date displayed above
 JV7199.which is a decimal equivalence of Year/Month/Day.
 JV7199
 JV7199.The orthometric height was determined by GPS observations and a
 JV7199.high-resolution geoid model.
 JV7199
 JV7199.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7199.GEOID18 height accuracy estimate available here.
 JV7199
 JV7199.Click photographs - Photos may exist for this station.
 JV7199
 JV7199.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7199
 JV7199.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7199
 JV7199.The ellipsoidal height was determined by GPS observations
 JV7199.and is referenced to NAD 83.
 JV7199
 JV7199. The following values were computed from the NAD 83(2011) position.
 JV7199
 JV7199;                    North         East     Units Scale Factor Converg.
 JV7199;SPC MD       -   190,194.247   378,162.173   MT  0.99998847   -0 09 32.7
 JV7199;SPC MD       -   623,995.63  1,240,687.06   sFT  0.99998847   -0 09 32.7
 JV7199;UTM  18      - 4,361,341.176   305,906.796   MT  1.00006385   -1 25 48.6
 JV7199
 JV7199!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7199!SPC MD       -   0.99997972  x   0.99998847  =   0.99996819
 JV7199!UTM  18      -   0.99997972  x   1.00006385  =   1.00004357
 JV7199
 JV7199_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0590661341(NAD 83)
 JV7199
 JV7199                          SUPERSEDED SURVEY CONTROL
 JV7199
 JV7199  NAD 83(2007)-  39 22 47.08795(N)    077 15 12.44107(W) AD(2002.00) 0
 JV7199  ELLIP H (02/10/07)  129.273  (m)                       GP(2002.00)    
 JV7199  ELLIP H (08/30/02)  129.266  (m)                       GP(       ) 4 2
 JV7199  NAD 83(1991)-  39 22 47.08817(N)    077 15 12.44148(W) AD(       ) 1
 JV7199  ELLIP H (02/09/94)  129.215  (m)                       GP(       ) 4 1
 JV7199
 JV7199.Superseded values are not recommended for survey control.
 JV7199
 JV7199.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7199.See file dsdata.pdf to determine how the superseded data were derived.
 JV7199
 JV7199_MARKER: DD = SURVEY DISK
 JV7199_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7199_STAMPING: CHEVES 1993
 JV7199_MARK LOGO: MD-021
 JV7199_PROJECTION: FLUSH
 JV7199_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7199+STABILITY: SURFACE MOTION
 JV7199_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7199+SATELLITE: SATELLITE OBSERVATIONS - September 13, 2022
 JV7199
 JV7199  HISTORY     - Date     Condition        Report By
 JV7199  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7199  HISTORY     - 20130626 GOOD             GPSSS
 JV7199  HISTORY     - 20140604 GOOD             RODCON
 JV7199  HISTORY     - 20190627 MARK NOT FOUND   NGS
 JV7199  HISTORY     - 20220913 GOOD             STUBY
 JV7199  HISTORY     - 20230725 GOOD             WTBALL
 JV7199
 JV7199                          STATION DESCRIPTION
 JV7199
 JV7199'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7199'FROM THE INTERSECTION I-70 AND MD RTE 75 IN NEW MARKET, MD, GO SOUTH
 JV7199'ON RTE 75 0.25 MILE (0.40 KM) TO A TEE INTERSECTION WITH BALDWIN
 JV7199'ROAD. TURN LEFT ON BALDWIN ROAD AND GO EAST 0.4 MILE (0.6 KM) TO
 JV7199'STATION ON RIGHT. STATION IS 32 FEET (9.8 M) SOUTH OF THE CENTERLINE
 JV7199'OF BALDWIN ROAD AND 12 FEET (3.7 M) NORTH OF A BARBED WIRE FENCE.
 JV7199'STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND CONCRETE
 JV7199'MONUMENT SET FLUSH WITH THE GROUND.
 JV7199
 JV7199                          STATION RECOVERY (2013)
 JV7199
 JV7199'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 JV7199'RECOVERED BY MIKE BUTLER AND DEWEY LILLY OF NORTHERN BAY LAND
 JV7199'PLANNING, ENGINEERING AND SURVEYING CORP.
 JV7199
 JV7199                          STATION RECOVERY (2014)
 JV7199
 JV7199'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV7199'RECOVERED IN GOOD CONDITION.
 JV7199
 JV7199                          STATION RECOVERY (2019)
 JV7199
 JV7199'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV7199'MARK WAS SEARCHED FOR AND NOT FOUND.  THE FENCE IS LONG AND A
 JV7199'HEDGE/TREE ROW LINE A FARMERS FIELD.
 JV7199
 JV7199                          STATION RECOVERY (2022)
 JV7199
 JV7199'RECOVERY NOTE BY STUBY SUBSURFACE INVESTIGATIONS, LLC 2022 (JS)
 JV7199'RECOVERED IN GOOD CONDITION.
 JV7199
 JV7199                          STATION RECOVERY (2023)
 JV7199
 JV7199'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2023 (JMB)
 JV7199'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4470 ***********************************************************************
 HV4470  DESIGNATION -  CHEVY CHASE LATTER DAY ST CH
 HV4470  PID         -  HV4470
 HV4470  STATE/COUNTY-  MD/MONTGOMERY
 HV4470  COUNTRY     -  US
 HV4470  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4470
 HV4470                         *CURRENT SURVEY CONTROL
 HV4470  ______________________________________________________________________
 HV4470* NAD 83(1993) POSITION- 38 57 48.78179(N) 077 04 57.69887(W)   ADJUSTED
 HV4470  ______________________________________________________________________
 HV4470  GEOID HEIGHT    -        -31.916 (meters)                     GEOID18
 HV4470  LAPLACE CORR    -         -2.55  (seconds)                    DEFLEC18
 HV4470  HORZ ORDER      -  THIRD
 HV4470
 HV4470.The horizontal coordinates were established by classical geodetic methods
 HV4470.and adjusted by the National Geodetic Survey in November 1994.
 HV4470
 HV4470.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4470.GEOID18 height accuracy estimate available here.
 HV4470
 HV4470.Click photographs - Photos may exist for this station.
 HV4470
 HV4470.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4470
 HV4470. The following values were computed from the NAD 83(1993) position.
 HV4470
 HV4470;                    North         East     Units Scale Factor Converg.
 HV4470;SPC MD       -   143,963.204   392,833.183   MT  0.99995102   -0 03 06.8
 HV4470;SPC MD       -   472,319.28  1,288,820.20   sFT  0.99995102   -0 03 06.8
 HV4470;UTM  18      - 4,314,794.544   319,554.969   MT  1.00000095   -1 18 36.0
 HV4470
 HV4470_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1955414794(NAD 83)
 HV4470
 HV4470                          SUPERSEDED SURVEY CONTROL
 HV4470
 HV4470  NAD 83(1991)-  38 57 48.78109(N)    077 04 57.69997(W) AD(       ) 3
 HV4470  NAD 83(1986)-  38 57 48.78074(N)    077 04 57.70984(W) AD(       ) 3
 HV4470  NAD 27      -  38 57 48.38357(N)    077 04 58.78346(W) AD(       ) 3
 HV4470
 HV4470.Superseded values are not recommended for survey control.
 HV4470
 HV4470.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4470.See file dsdata.pdf to determine how the superseded data were derived.
 HV4470
 HV4470_MARKER: 90 = CHURCH SPIRE
 HV4470_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV4470+SATELLITE: SATELLITE OBSERVATIONS - April 29, 2010
 HV4470
 HV4470  HISTORY     - Date     Condition        Report By
 HV4470  HISTORY     - 1969     FIRST OBSERVED   CGS
 HV4470  HISTORY     - 19950804 GOOD             USPSQD
 HV4470  HISTORY     - 20020311 GOOD             USPSQD
 HV4470  HISTORY     - 20030724 GOOD             GEOCAC
 HV4470  HISTORY     - 20100429 GOOD             GEOCAC
 HV4470
 HV4470                          STATION DESCRIPTION
 HV4470
 HV4470'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 HV4470'THE STATION IS THE CENTER OF THE TOP OF THE CHEVY CHASE LATTER DAY
 HV4470'SAINT CHURCH SPIRE.  IT IS ABOUT 90 FEET ABOVE THE GROUND.
 HV4470'
 HV4470'THE STATION IS LOCATED AT 5460 WESTERN AVENUE.
 HV4470
 HV4470                          STATION RECOVERY (1995)
 HV4470
 HV4470'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4470'RECOVERED IN GOOD CONDITION.
 HV4470
 HV4470                          STATION RECOVERY (2002)
 HV4470
 HV4470'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV4470'RECOVERED IN GOOD CONDITION.
 HV4470
 HV4470                          STATION RECOVERY (2003)
 HV4470
 HV4470'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV4470'RECOVERED IN GOOD CONDITION.
 HV4470
 HV4470                          STATION RECOVERY (2010)
 HV4470
 HV4470'RECOVERY NOTE BY GEOCACHING 2010 (JA)
 HV4470'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4172 ***********************************************************************
 HV4172  DESIGNATION -  CHEVY RESET
 HV4172  PID         -  HV4172
 HV4172  STATE/COUNTY-  MD/MONTGOMERY
 HV4172  COUNTRY     -  US
 HV4172  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4172
 HV4172                         *CURRENT SURVEY CONTROL
 HV4172  ______________________________________________________________________
 HV4172* NAD 83(1993) POSITION- 38 58 40.51135(N) 077 04 50.40210(W)   ADJUSTED
 HV4172* NAVD 88 ORTHO HEIGHT -   105.    (meters)      344.    (feet) SCALED
 HV4172  ______________________________________________________________________
 HV4172  GEOID HEIGHT    -        -31.905 (meters)                     GEOID18
 HV4172  LAPLACE CORR    -         -2.92  (seconds)                    DEFLEC18
 HV4172  HORZ ORDER      -  SECOND
 HV4172
 HV4172.The horizontal coordinates were established by classical geodetic methods
 HV4172.and adjusted by the National Geodetic Survey in November 1994.
 HV4172
 HV4172.The orthometric height was scaled from a topographic map.
 HV4172
 HV4172.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4172.GEOID18 height accuracy estimate available here.
 HV4172
 HV4172.Click photographs - Photos may exist for this station.
 HV4172
 HV4172.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4172
 HV4172. The following values were computed from the NAD 83(1993) position.
 HV4172
 HV4172;                    North         East     Units Scale Factor Converg.
 HV4172;SPC MD       -   145,558.177   393,010.255   MT  0.99995143   -0 03 02.3
 HV4172;SPC MD       -   477,552.12  1,289,401.14   sFT  0.99995143   -0 03 02.3
 HV4172;SPC VA N     - 2,146,500.766 3,622,981.077   MT  0.99996813   +0 53 09.0
 HV4172;SPC VA N     - 7,042,311.26 11,886,397.08   sFT  0.99996813   +0 53 09.0
 HV4172;UTM  18      - 4,316,385.323   319,767.034   MT  1.00000001   -1 18 32.9
 HV4172
 HV4172!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4172!SPC MD       -   0.99998857  x   0.99995143  =   0.99994000
 HV4172!SPC VA N     -   0.99998857  x   0.99996813  =   0.99995670
 HV4172!UTM  18      -   0.99998857  x   1.00000001  =   0.99998858
 HV4172
 HV4172:                Primary Azimuth Mark                     Grid Az
 HV4172:SPC MD       -  RENO RESET                               175 00 07.3
 HV4172:SPC VA N     -  RENO RESET                               174 03 56.0
 HV4172:UTM  18      -  RENO RESET                               176 15 37.9
 HV4172
 HV4172_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1976716385(NAD 83)
 HV4172
 HV4172|---------------------------------------------------------------------|
 HV4172| PID    Reference Object                     Distance      Geod. Az  |
 HV4172|                                                           dddmmss.s |
 HV4172| HV4384 RENO RESET                          APPROX. 2.8 KM 1745705.0 |
 HV4172| HV4369 STANDPIPE NEAR STA DULCE            APPROX. 2.8 KM 2900314.3 |
 HV4172|---------------------------------------------------------------------|
 HV4172
 HV4172                          SUPERSEDED SURVEY CONTROL
 HV4172
 HV4172  NAD 83(1991)-  38 58 40.51081(N)    077 04 50.40307(W) AD(       ) 2
 HV4172  NAD 83(1986)-  38 58 40.51020(N)    077 04 50.41295(W) AD(       ) 2
 HV4172  NAD 27      -  38 58 40.11900(N)    077 04 51.48600(W) AD(       ) 2
 HV4172  USSD        -  38 58 40.44900(N)    077 04 51.30500(W) AD(       ) 3
 HV4172
 HV4172.Superseded values are not recommended for survey control.
 HV4172
 HV4172.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4172.See file dsdata.pdf to determine how the superseded data were derived.
 HV4172
 HV4172_MARKER: DS = TRIANGULATION STATION DISK
 HV4172_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4172_MARK LOGO: CGS
 HV4172_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4172+STABILITY: SURFACE MOTION
 HV4172
 HV4172  HISTORY     - Date     Condition        Report By
 HV4172  HISTORY     - 1917     MONUMENTED       CGS
 HV4172  HISTORY     - 1937     SEE DESCRIPTION  WSSC
 HV4172  HISTORY     - 1939     GOOD             WSSC
 HV4172  HISTORY     - 1940     GOOD             CGS
 HV4172  HISTORY     - 1952     GOOD             CGS
 HV4172  HISTORY     - 19950804 MARK NOT FOUND   USPSQD
 HV4172
 HV4172                          STATION DESCRIPTION
 HV4172
 HV4172'DESCRIBED BY COAST AND GEODETIC SURVEY 1917 (CVH)
 HV4172'STATION IS THE FINIAL OF THE LARGE CHEVY CHASE STANDPIPE.
 HV4172
 HV4172                          STATION RECOVERY (1937)
 HV4172
 HV4172'RECOVERY NOTE BY WASH SUBURB SAN COMM 1937
 HV4172'STATION IS IN THE CIRCLE AT THE INTERSECTION OF ELM STREET,
 HV4172'ROSEMARY STREET, SPRUCE STREET AND HILLCREST PLACE, CHEVY CHASE,
 HV4172'MARYLAND.  APPROXIMATELY 25 FEET NW OF THE CENTER OF THE
 HV4172'CIRCLE.  SINCE THE STATION IS IN A RESIDENTIAL SECTION AND THE
 HV4172'GROUND VIEW IS OBSTRUCTED BY BUILDINGS AND TREES, A TOWER AT
 HV4172'LEAST 80 FEET HIGH WILL BE NECESSARY.
 HV4172'
 HV4172'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV4172'CONCRETE.  UNDERGROUND MARK IS
 HV4172'A BRASS SCREW IN CONCRETE FOUNDATION OF OLD STANDPIPE.
 HV4172'
 HV4172'REFERENCE MARK NO.1 IS OPPOSITE APPROXIMATE CENTER LINE OF
 HV4172'SPRUCE STREET, 6 FEET N OF CURB AROUND CIRCLE.
 HV4172'
 HV4172'REFERENCE MARK NO.2 IS IN PARKING ON SW SIDE OF CIRCLE, 65 FEET
 HV4172'S OF THE CENTER LINE OF ROSEMARY STREET.
 HV4172'
 HV4172'REFERENCE MARK NO.3 IS IN PARKING ON N SIDE OF CIRCLE, IN FRONT
 HV4172'OF SCHOOL BUILDING.
 HV4172
 HV4172                          STATION RECOVERY (1939)
 HV4172
 HV4172'RECOVERY NOTE BY WASH SUBURB SAN COMM 1939
 HV4172'STATION, WHICH WAS THE FINIAL OF THE CHEVY CHASE STANDPIPE, WAS
 HV4172'DESTROYED IN APRIL, 1934 WHEN THE STANDPIPE WAS REMOVED BY THE
 HV4172'WASHINGTON SUBURBAN SANITARY DISTRICT.  IN JUNE, 1938 STATION
 HV4172'WAS RESET FROM REFERENCES TAKEN PRIOR TO THE REMOVAL OF THE
 HV4172'STANDPIPE, AND FROM CHEVY REFERENCE MARK NO.1 WHICH WAS
 HV4172'RECOVERED.
 HV4172
 HV4172                          STATION RECOVERY (1940)
 HV4172
 HV4172'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (TMP)
 HV4172'THE POSITION INDICATES THAT THIS STATION IS THE SAME AS STATION
 HV4172'CHEVY, 1917.
 HV4172
 HV4172                          STATION RECOVERY (1952)
 HV4172
 HV4172'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (IWS)
 HV4172'THE STATION WAS RECOVERED AS DESCRIBED.  THE STATION MARK IS IN
 HV4172'GOOD CONDITION.  THE REFERENCE MARKS WERE NOT RECOVERED AT THIS
 HV4172'DATE.
 HV4172
 HV4172                          STATION RECOVERY (1995)
 HV4172
 HV4172'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4172'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7200 ***********************************************************************
 JV7200  DESIGNATION -  CHEW
 JV7200  PID         -  JV7200
 JV7200  STATE/COUNTY-  MD/WASHINGTON
 JV7200  COUNTRY     -  US
 JV7200  USGS QUAD   -  MYERSVILLE (2016)
 JV7200
 JV7200                         *CURRENT SURVEY CONTROL
 JV7200  ______________________________________________________________________
 JV7200* NAD 83(2011) POSITION- 39 37 24.79401(N) 077 36 38.04663(W)   ADJUSTED
 JV7200* NAD 83(2011) ELLIP HT-   149.407 (meters)        (06/27/12)   ADJUSTED
 JV7200* NAD 83(2011) EPOCH   -  2010.00
 JV7200* NAVD 88 ORTHO HEIGHT -   183.2   (meters)      601.    (feet) GPS OBS
 JV7200  ______________________________________________________________________
 JV7200  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7200  GEOID HEIGHT    -        -34.030 (meters)                     GEOID93
 JV7200  GEOID HEIGHT    -        -33.757 (meters)                     GEOID18
 JV7200  NAD 83(2011) X  -  1,055,522.192 (meters)                     COMP
 JV7200  NAD 83(2011) Y  - -4,805,016.115 (meters)                     COMP
 JV7200  NAD 83(2011) Z  -  4,045,974.318 (meters)                     COMP
 JV7200  LAPLACE CORR    -          8.76  (seconds)                    DEFLEC18
 JV7200
 JV7200  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7200  Standards:
 JV7200         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7200            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7200  -------------------------------------------------------------------
 JV7200  NETWORK    2.36   2.70           1.04   0.87   1.38      0.10299179
 JV7200  -------------------------------------------------------------------
 JV7200  Click here for local accuracies and other accuracy information.
 JV7200
 JV7200.The horizontal coordinates were established by GPS observations
 JV7200.and adjusted by the National Geodetic Survey in June 2012.
 JV7200
 JV7200.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7200.been affixed to the stable North American tectonic plate. See 
 JV7200.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7200
 JV7200.The horizontal coordinates are valid at the epoch date displayed above
 JV7200.which is a decimal equivalence of Year/Month/Day.
 JV7200
 JV7200.The orthometric height was determined by GPS observations and a
 JV7200.high-resolution geoid model.
 JV7200
 JV7200.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7200.GEOID18 height accuracy estimate available here.
 JV7200
 JV7200.Click photographs - Photos may exist for this station.
 JV7200
 JV7200.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7200
 JV7200.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7200
 JV7200.The ellipsoidal height was determined by GPS observations
 JV7200.and is referenced to NAD 83.
 JV7200
 JV7200. The following values were computed from the NAD 83(2011) position.
 JV7200
 JV7200;                    North         East     Units Scale Factor Converg.
 JV7200;SPC MD       -   217,408.250   347,574.577   MT  1.00003497   -0 22 59.6
 JV7200;SPC MD       -   713,280.23  1,140,334.26   sFT  1.00003497   -0 22 59.6
 JV7200;UTM  18      - 4,389,233.440   275,929.189   MT  1.00021818   -1 39 56.0
 JV7200
 JV7200!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7200!SPC MD       -   0.99997656  x   1.00003497  =   1.00001153
 JV7200!UTM  18      -   0.99997656  x   1.00021818  =   1.00019474
 JV7200
 JV7200_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7592989233(NAD 83)
 JV7200
 JV7200                          SUPERSEDED SURVEY CONTROL
 JV7200
 JV7200  NAD 83(2007)-  39 37 24.79398(N)    077 36 38.04761(W) AD(2002.00) 0
 JV7200  ELLIP H (02/10/07)  149.447  (m)                       GP(2002.00)    
 JV7200  ELLIP H (08/30/02)  149.444  (m)                       GP(       ) 4 2
 JV7200  NAD 83(1991)-  39 37 24.79347(N)    077 36 38.04747(W) AD(       ) 1
 JV7200  ELLIP H (02/09/94)  149.394  (m)                       GP(       ) 4 1
 JV7200
 JV7200.Superseded values are not recommended for survey control.
 JV7200
 JV7200.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7200.See file dsdata.pdf to determine how the superseded data were derived.
 JV7200
 JV7200_MARKER: DD = SURVEY DISK
 JV7200_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7200_STAMPING: CHEW 1993
 JV7200_MARK LOGO: MD-021
 JV7200_PROJECTION: FLUSH
 JV7200_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7200_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7200+STABILITY: SURFACE MOTION
 JV7200_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7200+SATELLITE: SATELLITE OBSERVATIONS - April 22, 2020
 JV7200
 JV7200  HISTORY     - Date     Condition        Report By
 JV7200  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7200  HISTORY     - 20080325 GOOD             GEOCAC
 JV7200  HISTORY     - 20200422 GOOD             WSRR
 JV7200
 JV7200                          STATION DESCRIPTION
 JV7200
 JV7200'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7200'FROM FREDERICK, MD, PROCEED WEST ON I-70 AND EXIT AT ROUTE 66 IN
 JV7200'WASHINGTON COUNTY. PROCEED NORTH ON RTE 66 3.1 MILES (5.0 KM) TO
 JV7200'CHEWSVILLE ROAD. TURN LEFT AND PROCEEED 560 FEET (170.7 M) WEST ON
 JV7200'CHEWSVILLE ROAD TO STATION ON LEFT. STATION IS 15 FEET (4.6 M)
 JV7200'SOUTHWEST OF CENTERLINE OF CHEWSVILLE ROAD AND 175 FEET (53.3 M)
 JV7200'NORTHWEST OF POWER POLE NO. 2. STATION IS A BRASS DISK SET IN THE TOP
 JV7200'OF AN 8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7200
 JV7200                          STATION RECOVERY (2008)
 JV7200
 JV7200'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV7200'RECOVERED IN GOOD CONDITION.
 JV7200
 JV7200                          STATION RECOVERY (2020)
 JV7200
 JV7200'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV7200'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4681 ***********************************************************************
 JV4681  DESIGNATION -  CHEWSVILLE
 JV4681  PID         -  JV4681
 JV4681  STATE/COUNTY-  MD/WASHINGTON
 JV4681  COUNTRY     -  US
 JV4681  USGS QUAD   -  SMITHSBURG (2016)
 JV4681
 JV4681                         *CURRENT SURVEY CONTROL
 JV4681  ______________________________________________________________________
 JV4681* NAD 83(1991) POSITION- 39 38 33.34349(N) 077 37 04.92926(W)   ADJUSTED
 JV4681* NAVD 88 ORTHO HEIGHT -   212.    (meters)      696.    (feet) SCALED
 JV4681  ______________________________________________________________________
 JV4681  GEOID HEIGHT    -        -33.847 (meters)                     GEOID18
 JV4681  LAPLACE CORR    -          7.51  (seconds)                    DEFLEC18
 JV4681  HORZ ORDER      -  SECOND
 JV4681
 JV4681.The horizontal coordinates were established by classical geodetic methods
 JV4681.and adjusted by the National Geodetic Survey in January 1992.
 JV4681
 JV4681.The orthometric height was scaled from a topographic map.
 JV4681
 JV4681.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4681.GEOID18 height accuracy estimate available here.
 JV4681
 JV4681.Click photographs - Photos may exist for this station.
 JV4681
 JV4681.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4681
 JV4681. The following values were computed from the NAD 83(1991) position.
 JV4681
 JV4681;                    North         East     Units Scale Factor Converg.
 JV4681;SPC MD       -   219,526.729   346,947.725   MT  1.00003937   -0 23 16.4
 JV4681;SPC MD       -   720,230.61  1,138,277.66   sFT  1.00003937   -0 23 16.4
 JV4681;SPC PA S     -    34,347.683   611,328.109   MT  1.00005817   +0 05 08.2
 JV4681;SPC PA S     -   112,689.02  2,005,665.64   sFT  1.00005817   +0 05 08.2
 JV4681;UTM  18      - 4,391,365.811   275,349.812   MT  1.00022138   -1 40 15.6
 JV4681
 JV4681!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4681!SPC MD       -   0.99997208  x   1.00003937  =   1.00001145
 JV4681!SPC PA S     -   0.99997208  x   1.00005817  =   1.00003025
 JV4681!UTM  18      -   0.99997208  x   1.00022138  =   1.00019345
 JV4681
 JV4681:                Primary Azimuth Mark                     Grid Az
 JV4681:SPC MD       -  CHEWSVILLE AZ MK                         076 34 45.3
 JV4681:SPC PA S     -  CHEWSVILLE AZ MK                         076 06 20.7
 JV4681:UTM  18      -  CHEWSVILLE AZ MK                         077 51 44.5
 JV4681
 JV4681_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7534991365(NAD 83)
 JV4681
 JV4681|---------------------------------------------------------------------|
 JV4681| PID    Reference Object                     Distance      Geod. Az  |
 JV4681|                                                           dddmmss.s |
 JV4681| CK6808 CHEWSVILLE RM 1                       7.314 METERS 01730     |
 JV4681| JV4683 FORT RITCHIE SITE C TOWER           APPROX.10.8 KM 0563210.3 |
 JV4681| CK6807 CHEWSVILLE AZ MK                                   0761128.9 |
 JV4681| CK6809 CHEWSVILLE RM 2                       8.019 METERS 19350     |
 JV4681|---------------------------------------------------------------------|
 JV4681
 JV4681                          SUPERSEDED SURVEY CONTROL
 JV4681
 JV4681  NAD 83(1986)-  39 38 33.34305(N)    077 37 04.93933(W) AD(       ) 2
 JV4681  NAD 27      -  39 38 32.99600(N)    077 37 05.97300(W) AD(       ) 2
 JV4681
 JV4681.Superseded values are not recommended for survey control.
 JV4681
 JV4681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4681.See file dsdata.pdf to determine how the superseded data were derived.
 JV4681
 JV4681_MARKER: DS = TRIANGULATION STATION DISK
 JV4681_SETTING: 66 = SET IN ROCK OUTCROP
 JV4681_STAMPING: CHEWSVILLE 1955
 JV4681_MARK LOGO: CGS
 JV4681_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4681+STABILITY: POSITION/ELEVATION WELL
 JV4681
 JV4681  HISTORY     - Date     Condition        Report By
 JV4681  HISTORY     - 1955     MONUMENTED       CGS
 JV4681  HISTORY     - 20080326 POOR             GEOCAC
 JV4681
 JV4681                          STATION DESCRIPTION
 JV4681
 JV4681'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4681'THE STATION IS ABOUT 1 MILE EAST OF CHEWSVILLE, ON LAND OWNED BY
 JV4681'ROBERT GRIMM.  IT IS 177 FEET SOUTH OF A POWERLINE POLE NUMBERED
 JV4681'231, 22 FEET EAST OF A POWERLINE POLE, 15 FEET EAST OF THE CENTER
 JV4681'OF A PRIVATE ROAD AND 4 FEET EAST OF A 4 IN X 4 IN WHITE WITNESS
 JV4681'POST.
 JV4681'
 JV4681'TO REACH THE STATION FROM THE POST OFFICE IN CHEWSVILLE, GO EAST
 JV4681'ON STATE HIGHWAY 64 (NOW UNDER CONSTRUCTION) FOR 0.9 MILE TO A
 JV4681'PRIVATE ROAD LEADING SOUTH, TURN RIGHT AND GO SOUTH ABOUT 100
 JV4681'FEET TO THE STATION ON THE LEFT.  THE AZIMUTH MARK IS REACHED BY
 JV4681'GOING EAST FROM THE JUNCTION OF THE PRIVATE ROAD AND HIGHWAY 64
 JV4681'FOR 0.3 MILE TO THE MARK ON THE LEFT.
 JV4681'
 JV4681'THE STATION MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED
 JV4681'CHEWSVILLE 1955.
 JV4681'
 JV4681'REFERENCE MARK 1 IS 14 FEET EAST OF THE CENTER OF THE PRIVATE
 JV4681'ROAD.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JV4681'STAMPED CHEWSVILLE NO 1 1955.
 JV4681'
 JV4681'REFERENCE MARK 2 IS 18 FEET EAST OF THE CENTER OF THE PRIVATE
 JV4681'ROAD.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JV4681'STAMPED CHEWSVILLE NO 2 1955.
 JV4681'
 JV4681'THE AZIMUTH MARK IS ABOUT 50 YARDS NORTH OF THE APPROXIMATE
 JV4681'CENTER OF STATE HIGHWAY 64, 114 FEET NORTH OF A POWERLINE POLE,
 JV4681'4 FEET WEST OF A T-JUNCTION OF FENCELINES AND 3 FEET EAST OF A
 JV4681'4 IN X 4 IN WHITE WITNESS POST.  THE MARK IS FLUSH WITH THE
 JV4681'GROUND, AND THE DISK IS STAMPED CHEWSVILLE 1955.
 JV4681
 JV4681                          STATION RECOVERY (2008)
 JV4681
 JV4681'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV4681'ONE OF THE MARKS WAS RECOVERED, BY DESCRIPTION AND MEASUREMENT,
 JV4681'PRESUMABLY THE STATION.  HOWEVER, ONLY THE SHANK REMAINS.  IT IS 35
 JV4681'FEET AT 86 DEGREES (MAGNETIC) FROM POLE H8218.  THE OTHER TWO MARKS
 JV4681'WERE NOT RECOVERED.  THE AZMUTH MARK IS ON POSTED PRIVATE LAND AND WAS
 JV4681'NOT SEARCHED FURTHER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3912 ***********************************************************************
 JU3912  DESIGNATION -  CHICOSKY
 JU3912  PID         -  JU3912
 JU3912  STATE/COUNTY-  MD/CECIL
 JU3912  COUNTRY     -  US
 JU3912  USGS QUAD   -  ELKTON (2016)
 JU3912
 JU3912                         *CURRENT SURVEY CONTROL
 JU3912  ______________________________________________________________________
 JU3912* NAD 83(1991) POSITION- 39 34 40.08821(N) 075 46 58.13759(W)   ADJUSTED
 JU3912* NAVD 88 ORTHO HEIGHT -    21.4   (meters)       70.    (feet) VERTCON3
 JU3912  ______________________________________________________________________
 JU3912  GEOID HEIGHT    -        -33.173 (meters)                     GEOID18
 JU3912  LAPLACE CORR    -          1.36  (seconds)                    DEFLEC18
 JU3912  HORZ ORDER      -  SECOND
 JU3912
 JU3912.The horizontal coordinates were established by classical geodetic methods
 JU3912.and adjusted by the National Geodetic Survey in January 1992.
 JU3912
 JU3912.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3912.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3912
 JU3912.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3912.GEOID18 height accuracy estimate available here.
 JU3912
 JU3912.Click photographs - Photos may exist for this station.
 JU3912
 JU3912.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3912
 JU3912. The following values were computed from the NAD 83(1991) position.
 JU3912
 JU3912;                    North         East     Units Scale Factor Converg.
 JU3912;SPC MD       -   212,850.307   504,576.838   MT  1.00002486   +0 45 50.2
 JU3912;SPC MD       -   698,326.38  1,655,432.51   sFT  1.00002486   +0 45 50.2
 JU3912;UTM  18      - 4,381,191.740   432,768.956   MT  0.99965565   -0 29 55.6
 JU3912
 JU3912!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3912!SPC MD       -   1.00000185  x   1.00002486  =   1.00002671
 JU3912!UTM  18      -   1.00000185  x   0.99965565  =   0.99965750
 JU3912
 JU3912:                Primary Azimuth Mark                     Grid Az
 JU3912:SPC MD       -  CHICOSKY AZ MK                           277 46 32.2
 JU3912:UTM  18      -  CHICOSKY AZ MK                           279 02 18.0
 JU3912
 JU3912_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3276881191(NAD 83)
 JU3912
 JU3912|---------------------------------------------------------------------|
 JU3912| PID    Reference Object                     Distance      Geod. Az  |
 JU3912|                                                           dddmmss.s |
 JU3912| CB1348 CHICOSKY RM 1                        25.025 METERS 00645     |
 JU3912| JU3898 BOUNDARY MONUMENT 77 1976             1.436 METERS 08626     |
 JU3912| CB1349 CHICOSKY RM 2                        27.314 METERS 25305     |
 JU3912| JU3954 NORTH EAST MICROWAVE TOWER          APPROX.12.7 KM 2615643.8 |
 JU3912| CB1347 CHICOSKY AZ MK                                     2783222.4 |
 JU3912| JU3871 ELKTON BRICK STACK                  APPROX. 5.3 KM 3025108.6 |
 JU3912|---------------------------------------------------------------------|
 JU3912
 JU3912                          SUPERSEDED SURVEY CONTROL
 JU3912
 JU3912  NAD 83(1986)-  39 34 40.08168(N)    075 46 58.14464(W) AD(       ) 2
 JU3912  NAD 27      -  39 34 39.68800(N)    075 46 59.38050(W) AD(       ) 2
 JU3912  NGVD 29 (07/19/86)   21.6    (m)           71.     (f) VERT ANG       
 JU3912
 JU3912.Superseded values are not recommended for survey control.
 JU3912
 JU3912.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3912.See file dsdata.pdf to determine how the superseded data were derived.
 JU3912
 JU3912_MARKER: DS = TRIANGULATION STATION DISK
 JU3912_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3912_STAMPING: CHICOSKY 1961
 JU3912_MARK LOGO: CGS
 JU3912_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3912+STABILITY: SURFACE MOTION
 JU3912_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3912+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2008
 JU3912
 JU3912  HISTORY     - Date     Condition        Report By
 JU3912  HISTORY     - 1961     MONUMENTED       CGS
 JU3912  HISTORY     - 1975     GOOD             NGS
 JU3912  HISTORY     - 1976     GOOD             NGS
 JU3912  HISTORY     - 20080208 GOOD             GEOCAC
 JU3912
 JU3912                          STATION DESCRIPTION
 JU3912
 JU3912'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3912'THE STATION IS LOCATED ABOUT 3-1/2 MILES SOUTHEAST OF ELKTON
 JU3912'MARYLAND, 3.0 MILES SOUTHWEST OF GLASGOW DELAWARE AND ON PROPERTY
 JU3912'OWNED BY MR. ROMAN CHICOSKY WHO GAVE PERMISSION.
 JU3912'
 JU3912'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JU3912'STATE HIGHWAY 213 WHICH IS ABOUT 0.5 MILE SOUTH OF THE BUSINESS
 JU3912'DISTRICT IN ELKTON, GO SOUTHERLY ON STATE HIGHWAY 213 FOR 2.4
 JU3912'MILES TO A SIDE ROAD LEFT, TURN LEFT AND GO EASTERLY ON ASPHALT
 JU3912'ROAD FOR 1.25 MILES TO A SIDE ROAD LEFT, TURN LEFT AND GO
 JU3912'NORTHERLY ON ASPHALT ROAD FOR 0.4 MILE TO A FENCE LINE,
 JU3912'(CONTINUE NORTHERLY ON ASPHALT ROAD FOR 0.05 MILE TO THE AZIMUTH
 JU3912'MARK ON THE RIGHT.), TURN RIGHT AND FOLLOW FENCE LINE EAST
 JU3912'FOR 0.3 MILE TO THE STATION.
 JU3912'
 JU3912'THE STATION, IS A STANDARD DISK SET IN THE TOP OF A 10 X 10
 JU3912'INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 3 INCHES ABOVE THE
 JU3912'SURFACE OF THE GROUND, STAMPED CHICOSKY 1961.  IT IS 21.5 FEET
 JU3912'NORTHWEST OF A FENCE CORNER, 18.2 FEET NORTHWEST OF A STANDARD
 JU3912'METAL WITNESS POST AND MARKER, 17.5 FEET NORTH OF A EAST-WEST
 JU3912'FENCE LINE AND 15.8 FEET WEST-SOUTHWEST OF A 9-INCH TRIANGULAR
 JU3912'BLAZED SASSAFRAS TREE.
 JU3912'
 JU3912'REFERENCE MARK 1, IS A STANDARD DISK SET IN THE TOP OF A 10
 JU3912'X 10 INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 6 INCHES ABOVE
 JU3912'THE SURFACE OF THE GROUND, STAMPED CHICOSKY NO 1 1961.  IT IS
 JU3912'95.4 FEET NORTH OF A FENCE CORNER, 88.6 FEET NORTH OF A STANDARD
 JU3912'METAL WITNESS POST AND MARKER, 75.5 FEET NORTH OF A 9-INCH
 JU3912'TRIANGULAR BLAZED SASSAFRAS TREE, 19.7 FEET NORTH OF AN 18-INCH
 JU3912'WALNUT TREE AND 2.0 FEET WEST OF A NORTH-SOUTH FENCE LINE.
 JU3912'
 JU3912'REFERENCE MARK 2, IS A STANDARD DISK SET IN THE TOP OF A 10 X
 JU3912'10 INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 6 INCHES ABOVE THE
 JU3912'SURFACE OF THE GROUND, STAMPED CHICOSKY NO 2 1961.  IT IS 106.8
 JU3912'FEET WEST OF A FENCE CORNER, 106.6 FEET WEST OF STANDARD METAL
 JU3912'WITNESS POST AND MARKER, 106.0 FEET WEST OF A 9-INCH
 JU3912'TRIANGULAR BLAZED SASSAFRAS TREE AND 3.2 FEET NORTH OF A
 JU3912'EAST-WEST FENCE LINE.
 JU3912'
 JU3912'AZIMUTH MARK, IS A STANDARD DISK SET IN THE TOP OF A 10 X 10
 JU3912'INCH CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE
 JU3912'GROUND, STAMPED CHICOSKY 1961.  IT IS 25.0 FEET SOUTH OF A
 JU3912'DRIVEWAY LEADING TO MR. CHICOSKY HOME, 17.0 FEET EAST OF THE
 JU3912'APPROXIMATE CENTER OF A ASPHALT ROAD, 6.0 FEET SOUTH OF A
 JU3912'30-INCH WALNUT TREE AND 5.0 FEET SOUTH OF A STANDARD METAL
 JU3912'WITNESS POST AND MARKER.
 JU3912'
 JU3912'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JU3912
 JU3912                          STATION RECOVERY (1975)
 JU3912
 JU3912'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JU3912'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JU3912'CONDITION AS DESCRIBED IN THE 1961 DESCRIPTION.  A LONGER DISTANCE
 JU3912'OF 0.02 FOOT OR 0.006 METER WAS NOTED TO REFERENCE MARK 1.  ALL
 JU3912'OTHER DISTANCES AND DIRECTIONS TO ALL MARKS WERE WITHIN CLOSE
 JU3912'AGREEMENT WITH THE 1961 OBSERVATIONS.  THE 1961 TO REACH IS
 JU3912'ADEQUATE.
 JU3912'
 JU3912'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3912'3 MILES SOUTHWEST OF GLASGOW, DELAWARE.
 JU3912
 JU3912                          STATION RECOVERY (1976)
 JU3912
 JU3912'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3912'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JU3912'AS PREVIOUSLY DESCRIBED.  THE DISTANCES AND DIRECTIONS TO ALL
 JU3912'OBJECTS WERE WITHIN CLOSE AGREEMENT WITH THE PREVIOUS OBSERVATIONS.
 JU3912'
 JU3912'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 77 WAS SET AT THIS
 JU3912'DATE, SEE DESCRIPTION THEREOF.
 JU3912'
 JU3912'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3912'3 MILES NORTHEAST OF CHESAPEAKE CITY.
 JU3912
 JU3912                          STATION RECOVERY (2008)
 JU3912
 JU3912'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 JU3912'FOUND THE STATION AND REFERENCE MARK NO. 1.  DID NOT FIND REFERENCE
 JU3912'MARK NO. 2.  DID NOT SEARCH FOR THE AZIMUTH MARK.  THE STATION IS AT
 JU3912'THE SOUTHWEST CORNER OF A WOODED AREA, ABOUT 0.3 MILES EAST OF HUTTON
 JU3912'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2071 ***********************************************************************
 HU2071  DESIGNATION -  CHIEF MSFC 1909
 HU2071  PID         -  HU2071
 HU2071  STATE/COUNTY-  MD/DORCHESTER
 HU2071  COUNTRY     -  US
 HU2071  USGS QUAD   -  EAST NEW MARKET (2016)
 HU2071
 HU2071                         *CURRENT SURVEY CONTROL
 HU2071  ______________________________________________________________________
 HU2071* NAD 83(1991) POSITION- 38 35 06.84243(N) 075 58 45.66498(W)   ADJUSTED
 HU2071* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU2071  ______________________________________________________________________
 HU2071  GEOID HEIGHT    -        -35.169 (meters)                     GEOID18
 HU2071  LAPLACE CORR    -         -2.81  (seconds)                    DEFLEC18
 HU2071  HORZ ORDER      -  THIRD
 HU2071
 HU2071.The horizontal coordinates were established by classical geodetic methods
 HU2071.and adjusted by the National Geodetic Survey in January 1992.
 HU2071
 HU2071.The orthometric height was scaled from a topographic map.
 HU2071
 HU2071.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2071.GEOID18 height accuracy estimate available here.
 HU2071
 HU2071.Click photographs - Photos may exist for this station.
 HU2071
 HU2071.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2071
 HU2071. The following values were computed from the NAD 83(1991) position.
 HU2071
 HU2071;                    North         East     Units Scale Factor Converg.
 HU2071;SPC MD       -   102,461.673   488,923.807   MT  0.99996264   +0 38 26.1
 HU2071;SPC MD       -   336,159.67  1,604,077.52   sFT  0.99996264   +0 38 26.1
 HU2071;UTM  18      - 4,271,205.875   414,702.440   MT  0.99968960   -0 36 39.0
 HU2071
 HU2071!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2071!SPC MD       -   1.00000556  x   0.99996264  =   0.99996819
 HU2071!UTM  18      -   1.00000556  x   0.99968960  =   0.99969515
 HU2071
 HU2071:                Primary Azimuth Mark                     Grid Az
 HU2071:SPC MD       -  SHELL                                    264 33 02.1
 HU2071:UTM  18      -  SHELL                                    265 48 07.2
 HU2071
 HU2071_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1470271205(NAD 83)
 HU2071
 HU2071|---------------------------------------------------------------------|
 HU2071| PID    Reference Object                     Distance      Geod. Az  |
 HU2071|                                                           dddmmss.s |
 HU2071| HU2074 SHELL                               APPROX. 1.7 KM 2651128.2 |
 HU2071|---------------------------------------------------------------------|
 HU2071
 HU2071                          SUPERSEDED SURVEY CONTROL
 HU2071
 HU2071  NAD 83(1986)-  38 35 06.83917(N)    075 58 45.68298(W) AD(       ) 3
 HU2071  NAD 27      -  38 35 06.39900(N)    075 58 46.89400(W) AD(       ) 3
 HU2071  USSD        -  38 35 06.80300(N)    075 58 46.69400(W) AD(       ) 3
 HU2071
 HU2071.Superseded values are not recommended for survey control.
 HU2071
 HU2071.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2071.See file dsdata.pdf to determine how the superseded data were derived.
 HU2071
 HU2071_MARKER: H = DRILL HOLE
 HU2071_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2071_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2071+STABILITY: SURFACE MOTION
 HU2071
 HU2071  HISTORY     - Date     Condition        Report By
 HU2071  HISTORY     - 1909     MONUMENTED       MDSFC
 HU2071  HISTORY     - 1941     MARK NOT FOUND   CGS
 HU2071
 HU2071                          STATION DESCRIPTION
 HU2071
 HU2071'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HU2071'ON THE SE SHORE OF CHOPTANK RIVER ON A NARROW NECK OF LAND
 HU2071'BETWEEN THE RIVER AND INDIAN CREEK, AND ABOUT 1 MILE E OF
 HU2071'OYSTERSHELL POINT.  STATION IS ON A GRASS STRIP, ABOUT 2 FEET
 HU2071'ABOVE HIGH WATER, 15 YARDS S OF RIVER SHORE, 11 YARDS N OF CREEK
 HU2071'SHORE, 20 YARDS SE OF RIVER SHORE, AND 25 YARDS SW OF RIVER
 HU2071'SHORE.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 HU2071'A MAYRLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HU2071'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HU2071'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HU2071'COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS CENTER OF A
 HU2071'2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE
 HU2071'BASE OF THE MONUMENT.  DISTANCES TO
 HU2071'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 HU2071'8-INCH CEDAR TREE, 13.81 METERS (45.3 FEET), S 73 DEG 16 MIN W.
 HU2071'NEAR PEAK OF COTTAGE, 1 MILE, S 83 DEG 49 MIN W.  SMOKE PIPE ON
 HU2071'WHARF HOUSE, 3/4 MILE, S 85 DEG 53 MIN W.  NAIL IN BLAZE IN
 HU2071'3-INCH LOCUST TREE, 11.76 METERS (38.6 FEET), N 81 DEG 12 MIN W.
 HU2071'RIGHT CORNER OF RAILING ON HOUSE, 2 MILES,  N 16 DEG 26 MIN W.
 HU2071'NEAR PEAK OF HOUSE, 3-5/8 MILES, N 03 DEG 02 MIN W. RIGHT
 HU2071'CORNER OF SQUARE CHIMNEY, 1/2 MILE, N 09 DEG 58 MIN E.  NEAR
 HU2071'CORNER OF BARN, 1/4 MILE, N 49 DEG 16 MIN E.  NAIL IN BLAZE IN
 HU2071'6-INCH CEDAR TREE, 22.07 METERS (72.4 FEET), N 72 DEG 18 MIN E.
 HU2071'STACK OF CANNERY, 3/8 MILE, S 65 DEG 07 MIN E.  PEAK OF HOUSE
 HU2071'BETWEEN TWO CHIMNEYS, 1/4 MILE, S 21 DEG 17 MIN E.
 HU2071
 HU2071                          STATION RECOVERY (1941)
 HU2071
 HU2071'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HU2071'STATION SEARCHED FOR BUT NOT FOUND.  THIS POINT HAS BEEN FILLED
 HU2071'IN WITH SAND FROM THE RIVER AND STATION MAY BE COVERED OVER.  A
 HU2071'BLAZED CEDAR WAS FOUND WASHED UP ALONG THE SHORE, BUT ITS
 HU2071'ORIGINAL POSITION WAS SO VAGUE THAT IT COULD NOT BE USED IN THE
 HU2071'POSITION INDICATED IN THE DESCRIPTION.
 HU2071'
 HU2071'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1935 ***********************************************************************
 HU1935  DESIGNATION -  CHILD
 HU1935  PID         -  HU1935
 HU1935  STATE/COUNTY-  MD/WICOMICO
 HU1935  COUNTRY     -  US
 HU1935  USGS QUAD   -  WETIPQUIN (2016)
 HU1935
 HU1935                         *CURRENT SURVEY CONTROL
 HU1935  ______________________________________________________________________
 HU1935* NAD 83(1991) POSITION- 38 15 27.13538(N) 075 50 04.56564(W)   ADJUSTED
 HU1935* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1935  ______________________________________________________________________
 HU1935  GEOID HEIGHT    -        -35.819 (meters)                     GEOID18
 HU1935  LAPLACE CORR    -         -1.70  (seconds)                    DEFLEC18
 HU1935  HORZ ORDER      -  THIRD
 HU1935
 HU1935.The horizontal coordinates were established by classical geodetic methods
 HU1935.and adjusted by the National Geodetic Survey in January 1992.
 HU1935
 HU1935.The orthometric height was scaled from a topographic map.
 HU1935
 HU1935.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1935.GEOID18 height accuracy estimate available here.
 HU1935
 HU1935.Click photographs - Photos may exist for this station.
 HU1935
 HU1935.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1935
 HU1935. The following values were computed from the NAD 83(1991) position.
 HU1935
 HU1935;                    North         East     Units Scale Factor Converg.
 HU1935;SPC MD       -    66,240.509   501,998.819   MT  1.00000766   +0 43 53.2
 HU1935;SPC MD       -   217,324.07  1,646,974.46   sFT  1.00000766   +0 43 53.2
 HU1935;UTM  18      - 4,234,719.295   426,980.602   MT  0.99966566   -0 31 00.5
 HU1935
 HU1935!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1935!SPC MD       -   1.00000566  x   1.00000766  =   1.00001332
 HU1935!UTM  18      -   1.00000566  x   0.99966566  =   0.99967132
 HU1935
 HU1935:                Primary Azimuth Mark                     Grid Az
 HU1935:SPC MD       -  IVEE                                     176 57 48.7
 HU1935:UTM  18      -  IVEE                                     178 12 42.4
 HU1935
 HU1935_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2698034719(NAD 83)
 HU1935
 HU1935|---------------------------------------------------------------------|
 HU1935| PID    Reference Object                     Distance      Geod. Az  |
 HU1935|                                                           dddmmss.s |
 HU1935| HU1865 MOUNT VERNON CHURCH SPIRE           APPROX. 1.5 KM 1694431.4 |
 HU1935| HU1864 IVEE                                APPROX. 0.9 KM 1774141.9 |
 HU1935|---------------------------------------------------------------------|
 HU1935
 HU1935                          SUPERSEDED SURVEY CONTROL
 HU1935
 HU1935  NAD 83(1986)-  38 15 27.13357(N)    075 50 04.58793(W) AD(       ) 3
 HU1935  NAD 27      -  38 15 26.69000(N)    075 50 05.83700(W) AD(       ) 3
 HU1935  USSD        -  38 15 27.07600(N)    075 50 05.54300(W) AD(       ) 3
 HU1935
 HU1935.Superseded values are not recommended for survey control.
 HU1935
 HU1935.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1935.See file dsdata.pdf to determine how the superseded data were derived.
 HU1935
 HU1935_MARKER: H = DRILL HOLE
 HU1935_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1935_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1935+STABILITY: SURFACE MOTION
 HU1935
 HU1935  HISTORY     - Date     Condition        Report By
 HU1935  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1935  HISTORY     - 1942     GOOD             CGS
 HU1935  HISTORY     - 1965     GOOD             LOCENG
 HU1935  HISTORY     - 1973     GOOD             MDDNR
 HU1935  HISTORY     - 1980     GOOD             MDDNR
 HU1935
 HU1935                          STATION DESCRIPTION
 HU1935
 HU1935'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1935'STATION IS ON THE N SHORE OF WICOMICO RIVER, ABOUT 7/8 MILE N OF
 HU1935'MOUNT VERNON CHURCH, ON MARSHLAND ABOUT 2 FEET ABOVE AND 15 YARDS
 HU1935'BACK FROM HIGH-WATER MARK.  THERE IS AN OLD WHARF ABOUT 300 YARDS
 HU1935'TO THE E, AND AT A POINT ABOUT 100 YARDS TO THE N TWO CREEKS JOIN
 HU1935'TO FORM A SINGLE CREEK ABOUT 20 FEET WIDE, WHICH FLOWS INTO THE
 HU1935'RIVER AT A POINT ABOUT 15 YARDS W OF THE STATION.  STATION MARK
 HU1935'IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HU1935'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 HU1935'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HU1935'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HU1935'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HU1935'FOLLOWS--CHIMNEY ON WHITE HOUSE ON SAND BLUFF ON OPPOSITE SHORE,
 HU1935'5/8 MILE, S 05 DEG 17 MIN W.  SMOKE PIPE ON LARGE WHITE HOUSE, 3/4
 HU1935'MILE, S 09 DEG 40 MIN W.  CHIMNEY ON BROWN HOUSE, 1-1/2 MILES,
 HU1935'S 37 DEG 59 MIN W.  FORK OF CREEK, 100 YARDS, N 17 DEG W.  CHIMNEY OF
 HU1935'LARGE HOUSE, 2 MILES, N 16 DEG 24 MIN E.  CHIMNEY OF ANOTHER
 HU1935'LARGE HOUSE, 3/4 MILE, N 48 DEG 28 MIN E.  MOUNT VERNON WHARF SMOKE
 HU1935'PIPE, 1-1/2 MILES, S 77 DEG 03 MIN E.  LARGE WHITE HOUSE IN
 HU1935'WOODS, 3/4 MILE, S 46 DEG 12 MIN E.  CREAM-COLORED HOUSE
 HU1935'IN WOODS, 1/2 MILE, S 24 DEG 28 MIN E.  CHIMNEY ON WHITE
 HU1935'HOUSE IN WOODS ON OPPOSITE SHORE, 3/4 MILE, S 06 DEG 52 MIN E.
 HU1935
 HU1935                          STATION RECOVERY (1942)
 HU1935
 HU1935'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1935'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH ORIGINAL
 HU1935'DESCRIPTION--
 HU1935'
 HU1935'(1) 10 YARDS BACK FROM HIGH-WATER MARK, NOT 15 YARDS.
 HU1935'
 HU1935'(2) DELETE THERE IS AN OLD WHARF ABOUT 300 YARDS.
 HU1935'
 HU1935'(3) AND AT A POINT 290 FEET TO THE N, TWO CREEKS JOIN TO FORM
 HU1935'A SINGLE CREEK, NOT 100 YARDS.
 HU1935'
 HU1935'THE STATION IS LOCATED ON THE N SHORE OF THE WICOMICO RIVER ON
 HU1935'MARSHLAND, ABOUT 7/8 MILE N OF THE MOUNT VERNON CHURCH, 10 YARDS
 HU1935'FROM THE MEAN HIGH-WATER MARK AND 2 FEET ABOVE MEAN HIGH WATER.
 HU1935'TWO SMALL STREAMS JOIN ABOUT 290 FEET TO THE N OF THE STATION AND
 HU1935'FLOW INTO THE RIVER AT A POINT 15 YARDS W OF THE STATION.
 HU1935'
 HU1935'THE STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HU1935'SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH SQUARE
 HU1935'CONCRETE POST, EXTENDING 4 INCHES ABOVE THE GROUND.  THE LETTERS
 HU1935'M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK IN THE TOP OF THE POST.  THE
 HU1935'STATION IS IN GOOD CONDITION.
 HU1935
 HU1935                          STATION RECOVERY (1965)
 HU1935
 HU1935'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1965
 HU1935'RECOVERED BY MDDCBA.
 HU1935'
 HU1935'STATION WAS RECOVERED IN VERY GOOD CONDITION AS DESCRIBED.
 HU1935'
 HU1935'DEPT. CHES. BAY AFFAIRS MAINTAINS SIGNAL OVER STATION.
 HU1935
 HU1935                          STATION RECOVERY (1973)
 HU1935
 HU1935'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HU1935'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED EXCEPT STATION IS
 HU1935'NOW 5 YARDS FROM M.H.W.  DEPT. STILL MAINTAINS WOOD SIGNAL OVER
 HU1935'STATION.  A WITNESS POST AND SIGN WERE PLACED AT STATION.
 HU1935
 HU1935                          STATION RECOVERY (1980)
 HU1935
 HU1935'RECOVERY NOTE BY MD DEPT OF NAT RES 1980 (LW)
 HU1935'CHILD MSFC RECOVERED GOOD.  MARK IS NOW 3 FEET FROM WATERS EDGE,
 HU1935'EXTENDING 2 INCHES ABOVE SURFACE OF MARSH.
 HU1935'
 HU1935'DISTANCE AND DIRECTION FROM NEAREST TOWN--3/4 MI NW MT VERNON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3962 ***********************************************************************
 JU3962  DESIGNATION -  CHILDS
 JU3962  PID         -  JU3962
 JU3962  STATE/COUNTY-  MD/CECIL
 JU3962  COUNTRY     -  US
 JU3962  USGS QUAD   -  BAY VIEW (2016)
 JU3962
 JU3962                         *CURRENT SURVEY CONTROL
 JU3962  ______________________________________________________________________
 JU3962* NAD 83(1991) POSITION- 39 38 38.73071(N) 075 52 31.68098(W)   ADJUSTED
 JU3962* NAVD 88 ORTHO HEIGHT -    57.    (meters)      187.    (feet) SCALED
 JU3962  ______________________________________________________________________
 JU3962  GEOID HEIGHT    -        -33.098 (meters)                     GEOID18
 JU3962  LAPLACE CORR    -         -0.19  (seconds)                    DEFLEC18
 JU3962  HORZ ORDER      -  SECOND
 JU3962
 JU3962.The horizontal coordinates were established by classical geodetic methods
 JU3962.and adjusted by the National Geodetic Survey in January 1992.
 JU3962
 JU3962.The orthometric height was scaled from a topographic map.
 JU3962
 JU3962.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3962.GEOID18 height accuracy estimate available here.
 JU3962
 JU3962.Click photographs - Photos may exist for this station.
 JU3962
 JU3962.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3962
 JU3962. The following values were computed from the NAD 83(1991) position.
 JU3962
 JU3962;                    North         East     Units Scale Factor Converg.
 JU3962;SPC MD       -   220,107.831   496,526.300   MT  1.00003972   +0 42 20.9
 JU3962;SPC MD       -   722,137.11  1,629,020.04   sFT  1.00003972   +0 42 20.9
 JU3962;SPC PA S     -    36,213.093   760,898.783   MT  1.00005781   +1 12 58.3
 JU3962;SPC PA S     -   118,809.12  2,496,382.09   sFT  1.00005781   +1 12 58.3
 JU3962;UTM  18      - 4,388,622.275   424,883.327   MT  0.99966947   -0 33 30.9
 JU3962
 JU3962!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3962!SPC MD       -   0.99999630  x   1.00003972  =   1.00003602
 JU3962!SPC PA S     -   0.99999630  x   1.00005781  =   1.00005411
 JU3962!UTM  18      -   0.99999630  x   0.99966947  =   0.99966577
 JU3962
 JU3962:                Primary Azimuth Mark                     Grid Az
 JU3962:SPC MD       -  CHILDS AZ MK                             107 04 01.5
 JU3962:SPC PA S     -  CHILDS AZ MK                             106 33 24.1
 JU3962:UTM  18      -  CHILDS AZ MK                             108 19 53.3
 JU3962
 JU3962_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2488388622(NAD 83)
 JU3962
 JU3962|---------------------------------------------------------------------|
 JU3962| PID    Reference Object                     Distance      Geod. Az  |
 JU3962|                                                           dddmmss.s |
 JU3962| CB1350 CHILDS RM 1                          21.980 METERS 02746     |
 JU3962| JU3826 CHILDS AZ MK                        APPROX. 1.1 KM 1074622.4 |
 JU3962| CB1351 CHILDS RM 2                          35.055 METERS 25655     |
 JU3962|---------------------------------------------------------------------|
 JU3962
 JU3962                          SUPERSEDED SURVEY CONTROL
 JU3962
 JU3962  NAD 83(1986)-  39 38 38.72483(N)    075 52 31.68750(W) AD(       ) 2
 JU3962  NAD 27      -  39 38 38.33210(N)    075 52 32.90660(W) AD(       ) 2
 JU3962
 JU3962.Superseded values are not recommended for survey control.
 JU3962
 JU3962.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3962.See file dsdata.pdf to determine how the superseded data were derived.
 JU3962
 JU3962_MARKER: DS = TRIANGULATION STATION DISK
 JU3962_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3962_STAMPING: CHILDS 1958
 JU3962_MARK LOGO: CGS
 JU3962_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3962+STABILITY: SURFACE MOTION
 JU3962
 JU3962  HISTORY     - Date     Condition        Report By
 JU3962  HISTORY     - 1958     MONUMENTED       CGS
 JU3962  HISTORY     - 1964     GOOD             CGS
 JU3962
 JU3962                          STATION DESCRIPTION
 JU3962
 JU3962'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3962'STATION IS LOCATED ABOUT 4 MILES NORTHWEST OF ELKTON, AND ABOUT
 JU3962'0.25 MILE SOUTH OF THE VILLAGE OF CHILDS, ON PROPERTY OF
 JU3962'MR. WALKER.  IT IS 3-1/2 FEET SOUTH OF WITNESS MARKER, 55-1/2
 JU3962'FEET SOUTH-SOUTHWEST OF A 24 INCH POPLAR TREE, AND 36-1/2 FEET
 JU3962'EAST-SOUTHEAST OF A 24 INCH POPLAR TREE WITH BLAZE.  THE MARK IS
 JU3962'A STANDARD TRIANGULATION STATION DISK, SET IN A 10 BY 10 INCH
 JU3962'CONCRETE MONUMENT, PROJECTS 2 INCHES AND THE DISK IS STAMPED
 JU3962'CHILDS 1958.
 JU3962'
 JU3962'REFERENCE MARK NO. 1 IS 26 FEET EAST-NORTHEAST OF A 24 INCH
 JU3962'POPLAR TREE, AND 6 FEET WEST OF A CLEARED FIELD.  THE MARK IS A
 JU3962'STANDARD REFERENCE MARK DISK, SET IN A 10 BY 10 INCH CONCRETE
 JU3962'MONUMENT, PROJECTS 4 INCHES AND THE DISK IS STAMPED CHILDS NO 1
 JU3962'1958.
 JU3962'
 JU3962'REFERENCE MARK NO. 2 IS 84 FEET EAST OF A 24 INCH OAK TREE, AND
 JU3962'2 FEET NORTH OF A CLEARED FIELD.  THE MARK IS A STANDARD REFERENCE
 JU3962'MARK DISK SET IN A 10 BY 10 INCH CONCRETE MONUMENT, PROJECTS 4
 JU3962'INCHES AND THE DISK IS STAMPED CHILDS NO 2 1958.
 JU3962'
 JU3962'AZIMUTH MARK IS 2 FEET SOUTH OF WITNESS MARKER, 1 FOOT SOUTHWEST
 JU3962'OF FENCE CORNER, AND 66-1/2 FEET SOUTH OF A 10 INCH LOCUST
 JU3962'TREE.  THE MARK IS A STANDARD AZIMUTH MARK DISK SET IN A 10 BY 10
 JU3962'INCH CONCRETE MONUMENT, PROJECTS 2 INCHES AND THE DISK IS STAMPED
 JU3962'CHILDS 1958.
 JU3962'
 JU3962'TO REACH FROM THE POST OFFICE IN ELKTON, GO WEST ON MAIN STREET
 JU3962'FOR 0.05 MILE TO STOP LIGHT, TURN RIGHT AND GO NORTH ON STATE
 JU3962'HIGHWAY NO. 280 FOR 0.45 MILE TO CROSSROAD JUST AFTER CROSSING
 JU3962'AND OVERPASS, TURN LEFT AND GO WESTERLY ON PAVED ROAD FOR 0.3 MILE
 JU3962'TO T JUNCTION, TURN RIGHT AND GO NORTHERLY FOR 2.25 MILE TO
 JU3962'DRIVEWAY ON RIGHT, (TURN RIGHT AND GO NORTH ON DRIVEWAY FOR 0.15
 JU3962'MILE TO BARN, TURN LEFT AND GO WESTERLY FOR 0.1 MILE TO OBLATE
 JU3962'NOVITIATE BUILDING, WALK SOUTHWEST FOR 50 YARDS TO FENCE
 JU3962'CORNER, AND AZIMUTH MARK AS DESCRIBED.) CONTINUE NORTHWESTERLY
 JU3962'FOR 0.65 MILE TO CROSSROADS, TURN LEFT AND GO SOUTH FOR 0.15
 JU3962'MILE TO CROSSROAD AND GATE.  PASS THROUGH GATE AND
 JU3962'CONTINUE STRAIGHT AHEAD FOR 0.1 MILE TO GATE ON RIGHT, TURN RIGHT
 JU3962'INTO OPEN FIELD AND GO NORTH-NORTHWESTERLY FOR 0.05 MILE TO
 JU3962'STATION AS DESCRIBED.
 JU3962'
 JU3962'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JU3962
 JU3962                          STATION RECOVERY (1964)
 JU3962
 JU3962'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (CFO)
 JU3962'THE STATION MARK, REFERENCE MARKS AND THE AZIMUTH MARK WERE ALL
 JU3962'RECOVERED AND FOUND TO BE IN GOOD CONDITION.
 JU3962'
 JU3962'TO REACH THE STATION FROM THE CROSSROAD IN THE SMALL SETTLEMENT
 JU3962'OF CHILDS, GO WESTERLY ON OLD GRAVELED ROAD FOR 0.25 MILE TO THE
 JU3962'NORTHEASTERLY CORNER OF THE WOODS, THEN SOUTH 0.05 MILE TO THE
 JU3962'SOUTHEAST CORNER OF THE WOODS AND STATION.
 JU3962'
 JU3962'TO REACH THE AZIMUTH MARK FROM THE CROSSROAD AT CHILDS GO
 JU3962'SOUTHEAST ON STATE HIGHWAY 545 FOR 0.7 MILE TO A PRIVATE ROAD
 JU3962'ON THE LEFT, TURN LEFT AND GO 0.25 MILE TO THE OBLATE NOVITATE
 JU3962'BUILDING, THE MARK IS 129.0 FEET NORTH OF THE EXTREME NORTHWEST
 JU3962'CORNER OF THE BUILDING, 179.0 FEET NORTH-NORTHWEST OF THE EXTREME
 JU3962'NORTHEAST CORNER OF THE BUILDING, 101.0 FEET EAST-NORTHEAST OF
 JU3962'A STATUE, 67.0 FEET SOUTH OF THE TREE USED FOR A GATE IN
 JU3962'FENCELINE AND 1.0 FOOT SOUTH OF THE METAL WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3826 ***********************************************************************
 JU3826  DESIGNATION -  CHILDS AZ MK
 JU3826  PID         -  JU3826
 JU3826  STATE/COUNTY-  MD/CECIL
 JU3826  COUNTRY     -  US
 JU3826  USGS QUAD   -  NEWARK WEST (2016)
 JU3826
 JU3826                         *CURRENT SURVEY CONTROL
 JU3826  ______________________________________________________________________
 JU3826* NAD 83(1991) POSITION- 39 38 27.92262(N) 075 51 48.07792(W)   ADJUSTED
 JU3826* NAVD 88 ORTHO HEIGHT -    37.    (meters)      121.    (feet) SCALED
 JU3826  ______________________________________________________________________
 JU3826  GEOID HEIGHT    -        -33.104 (meters)                     GEOID18
 JU3826  LAPLACE CORR    -          0.30  (seconds)                    DEFLEC18
 JU3826  HORZ ORDER      -  SECOND
 JU3826
 JU3826.The horizontal coordinates were established by classical geodetic methods
 JU3826.and adjusted by the National Geodetic Survey in January 1992.
 JU3826
 JU3826.The orthometric height was scaled from a topographic map.
 JU3826
 JU3826.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3826.GEOID18 height accuracy estimate available here.
 JU3826
 JU3826.Click photographs - Photos may exist for this station.
 JU3826
 JU3826.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3826
 JU3826. The following values were computed from the NAD 83(1991) position.
 JU3826
 JU3826;                    North         East     Units Scale Factor Converg.
 JU3826;SPC MD       -   219,787.387   497,570.049   MT  1.00003902   +0 42 48.2
 JU3826;SPC MD       -   721,085.79  1,632,444.40   sFT  1.00003902   +0 42 48.2
 JU3826;SPC PA S     -    35,901.956   761,945.366   MT  1.00005854   +1 13 26.6
 JU3826;SPC PA S     -   117,788.33  2,499,815.75   sFT  1.00005854   +1 13 26.6
 JU3826;UTM  18      - 4,388,279.007   425,919.367   MT  0.99966756   -0 33 03.0
 JU3826
 JU3826!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3826!SPC MD       -   0.99999944  x   1.00003902  =   1.00003846
 JU3826!SPC PA S     -   0.99999944  x   1.00005854  =   1.00005798
 JU3826!UTM  18      -   0.99999944  x   0.99966756  =   0.99966700
 JU3826
 JU3826_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2591988279(NAD 83)
 JU3826
 JU3826                          SUPERSEDED SURVEY CONTROL
 JU3826
 JU3826  NAD 83(1986)-  39 38 27.91677(N)    075 51 48.08444(W) AD(       ) 2
 JU3826  NAD 27      -  39 38 27.52360(N)    075 51 49.30520(W) AD(       ) 2
 JU3826
 JU3826.Superseded values are not recommended for survey control.
 JU3826
 JU3826.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3826.See file dsdata.pdf to determine how the superseded data were derived.
 JU3826
 JU3826_MARKER: DZ = AZIMUTH MARK DISK
 JU3826_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3826_STAMPING: CHILDS 1958
 JU3826_MARK LOGO: CGS
 JU3826_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3826+STABILITY: SURFACE MOTION
 JU3826
 JU3826  HISTORY     - Date     Condition        Report By
 JU3826  HISTORY     - 1958     MONUMENTED       CGS
 JU3826  HISTORY     - 1964     GOOD             CGS
 JU3826
 JU3826                          STATION DESCRIPTION
 JU3826
 JU3826'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3826'STATION IS LOCATED NEAR THE OBLATE NOVITIATE BUILDING, 1 FOOT
 JU3826'SOUTHWEST OF FENCE CORNER, 66-1/2 FEET SOUTH OF A 10 INCH LOCUST
 JU3826'TREE.  THE MARK IS A STANDARD AZIMUTH MARK DISK SET IN A 10 BY
 JU3826'10 INCH CONCRETE MONUMENT.  PROJECTS 2 INCHES AND THE DISK IS
 JU3826'STAMPED CHILDS 1958.
 JU3826'
 JU3826'A TELLUROMETER TRAVERSE CONNECTION WAS MADE BETWEEN CHILDS
 JU3826'AZIMUTH MARK AND STATION CHILDS AND THE DISTANCE IS 3581.91 FEET
 JU3826'OR 1091.780 METERS.
 JU3826'
 JU3826'TO REACH FROM THE POST OFFICE IN ELKTON, GO WEST ON MAIN STREET
 JU3826'FOR 0.05 MILE TO STOP LIGHT, TURN RIGHT AND GO NORTH ON STATE
 JU3826'HIGHWAY NO. 280 FOR 0.45 MILE TO SIDE ROAD RIGHT JUST AFTER
 JU3826'CROSSING AN OVERPASS, TURN LEFT AND GO WESTERLY ON PAVED ROAD FOR
 JU3826'0.3 MILE TO T JUNCTION, TURN RIGHT AND GO NORTHERLY ON PAVED ROAD
 JU3826'FOR 2.25 MILE TO DRIVEWAY ON RIGHT, TURN RIGHT AND GO NORTH ON
 JU3826'DRIVEWAY FOR 0.15 MILE TO BARN, TURN LEFT AND GO WESTERLY FOR
 JU3826'0.10 MILE TO OBLATE NOVITIATE BUILDING, WALK SOUTHWEST FOR 50
 JU3826'YARDS TO FENCE CORNER AND STATION AS DESCRIBED.
 JU3826
 JU3826                          STATION RECOVERY (1964)
 JU3826
 JU3826'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (CFO)
 JU3826'THE MARK WAS RECOVERED AND FOUND TO BE IN GOOD CONDITION.  IT IS
 JU3826'179 FEET NORTH-NORTHWEST OF THE EXTREME NORTHEAST CORNER OF THE
 JU3826'BUILDING, 129.0 FEET NORTH OF THE EXTREME NORTHWEST CORNER OF
 JU3826'THE BUILDING, 101.0 FEET EAST-NORTHEAST OF A STATUE, 67.0 FEET
 JU3826'SOUTH OF TREE USED FOR THE GATE IN THE FENCELINE AND 1.0 SOUTH
 JU3826'OF A METAL WITNESS POST.  A STANDARD AZIMUTH MARK DISK IN A 12
 JU3826'X 12-INCH CONCRETE MONUMENT PROJECTING ABOUT 3 INCHES AND THE
 JU3826'DISK IS STAMPED CHILDS 1958.
 JU3826'
 JU3826'TO REACH FROM THE CROSSROAD IN CHILDS, GO SOUTHEAST ON STATE
 JU3826'HIGHWAY 545 FOR 0.7 MILE TO A PRIVATE ROAD ON THE LEFT, TURN LEFT
 JU3826'AND GO 0.25 MILE TO THE OBLATE NOVITATE BUILDING AND STATION
 JU3826'AS DESCRIBED ABOVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5961 ***********************************************************************
 HV5961  DESIGNATION -  CHIMNEY 1901
 HV5961  PID         -  HV5961
 HV5961  STATE/COUNTY-  MD/DORCHESTER
 HV5961  COUNTRY     -  US
 HV5961  USGS QUAD   -  CHURCH CREEK (2016)
 HV5961
 HV5961                         *CURRENT SURVEY CONTROL
 HV5961  ______________________________________________________________________
 HV5961* NAD 83(1991) POSITION- 38 32 03.52025(N) 076 09 28.58147(W)   ADJUSTED
 HV5961* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5961  ______________________________________________________________________
 HV5961  GEOID HEIGHT    -        -34.939 (meters)                     GEOID18
 HV5961  LAPLACE CORR    -         -4.37  (seconds)                    DEFLEC18
 HV5961  HORZ ORDER      -  THIRD
 HV5961
 HV5961.The horizontal coordinates were established by classical geodetic methods
 HV5961.and adjusted by the National Geodetic Survey in January 1992.
 HV5961
 HV5961.The orthometric height was scaled from a topographic map.
 HV5961
 HV5961.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5961.GEOID18 height accuracy estimate available here.
 HV5961
 HV5961.Click photographs - Photos may exist for this station.
 HV5961
 HV5961.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5961
 HV5961. The following values were computed from the NAD 83(1991) position.
 HV5961
 HV5961;                    North         East     Units Scale Factor Converg.
 HV5961;SPC MD       -    96,650.573   473,416.998   MT  0.99996751   +0 31 42.6
 HV5961;SPC MD       -   317,094.42  1,553,202.27   sFT  0.99996751   +0 31 42.6
 HV5961;UTM  18      - 4,265,736.042   399,076.518   MT  0.99972543   -0 43 17.2
 HV5961
 HV5961!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5961!SPC MD       -   1.00000536  x   0.99996751  =   0.99997287
 HV5961!UTM  18      -   1.00000536  x   0.99972543  =   0.99973079
 HV5961
 HV5961:                Primary Azimuth Mark                     Grid Az
 HV5961:SPC MD       -  HEDGE 1901                               100 29 59.1
 HV5961:UTM  18      -  HEDGE 1901                               101 44 58.9
 HV5961
 HV5961_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9907665736(NAD 83)
 HV5961
 HV5961|---------------------------------------------------------------------|
 HV5961| PID    Reference Object                     Distance      Geod. Az  |
 HV5961|                                                           dddmmss.s |
 HV5961| HV5960 HEDGE 1901                          APPROX. 0.6 KM 1010141.7 |
 HV5961| HV5927 PEACH 1901                          258.793 METERS 21915     |
 HV5961|---------------------------------------------------------------------|
 HV5961
 HV5961                          SUPERSEDED SURVEY CONTROL
 HV5961
 HV5961  NAD 83(1986)-  38 32 03.51766(N)    076 09 28.59740(W) AD(       ) 3
 HV5961  NAD 27      -  38 32 03.11300(N)    076 09 29.78600(W) AD(       ) 3
 HV5961  USSD        -  38 32 03.53800(N)    076 09 29.57000(W) AD(       ) 3
 HV5961
 HV5961.Superseded values are not recommended for survey control.
 HV5961
 HV5961.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5961.See file dsdata.pdf to determine how the superseded data were derived.
 HV5961
 HV5961
 HV5961  HISTORY     - Date     Condition        Report By
 HV5961  HISTORY     - 1901     MONUMENTED       CGS
 HV5961  HISTORY     - 1908     GOOD             CGS
 HV5961
 HV5961                          STATION DESCRIPTION
 HV5961
 HV5961'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV5961'ON THE N SIDE OF FISHING CREEK, NEAR THE SHORE AND A LITTLE ABOVE
 HV5961'HIGH WATER, SE FROM CHIMNEY OF A BURNT HOUSE, SE BY E FROM LOCUST
 HV5961'TREE MARKED WITH TRIANGLE, AND 4.15 METERS (13.62 FEET) FROM PLANK
 HV5961'STUB ON SHORE.  STATION MARKED BY A LOCUST STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5800 ***********************************************************************
 HV5800  DESIGNATION -  CHIN
 HV5800  PID         -  HV5800
 HV5800  STATE/COUNTY-  MD/QUEEN ANNES
 HV5800  COUNTRY     -  US
 HV5800  USGS QUAD   -  QUEENSTOWN (2016)
 HV5800
 HV5800                         *CURRENT SURVEY CONTROL
 HV5800  ______________________________________________________________________
 HV5800* NAD 83(1991) POSITION- 38 53 46.45591(N) 076 10 14.22964(W)   ADJUSTED
 HV5800* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5800  ______________________________________________________________________
 HV5800  GEOID HEIGHT    -        -34.163 (meters)                     GEOID18
 HV5800  LAPLACE CORR    -         -4.45  (seconds)                    DEFLEC18
 HV5800  HORZ ORDER      -  THIRD
 HV5800
 HV5800.The horizontal coordinates were established by classical geodetic methods
 HV5800.and adjusted by the National Geodetic Survey in January 1992.
 HV5800
 HV5800.The orthometric height was scaled from a topographic map.
 HV5800
 HV5800.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5800.GEOID18 height accuracy estimate available here.
 HV5800
 HV5800.Click photographs - Photos may exist for this station.
 HV5800
 HV5800.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5800
 HV5800. The following values were computed from the NAD 83(1991) position.
 HV5800
 HV5800;                    North         East     Units Scale Factor Converg.
 HV5800;SPC MD       -   136,814.491   471,946.488   MT  0.99994991   +0 31 14.0
 HV5800;SPC MD       -   448,865.54  1,548,377.77   sFT  0.99994991   +0 31 14.0
 HV5800;UTM  18      - 4,305,913.297   398,484.623   MT  0.99972690   -0 44 06.4
 HV5800
 HV5800!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5800!SPC MD       -   1.00000524  x   0.99994991  =   0.99995515
 HV5800!UTM  18      -   1.00000524  x   0.99972690  =   0.99973214
 HV5800
 HV5800:                Primary Azimuth Mark                     Grid Az
 HV5800:SPC MD       -  OWE                                      219 34 17.0
 HV5800:UTM  18      -  OWE                                      220 49 37.4
 HV5800
 HV5800_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9848405913(NAD 83)
 HV5800
 HV5800|---------------------------------------------------------------------|
 HV5800| PID    Reference Object                     Distance      Geod. Az  |
 HV5800|                                                           dddmmss.s |
 HV5800| HV5811 ALLER                               290.331 METERS 13657     |
 HV5800| HV5766 OWE                                 APPROX. 0.5 KM 2200531.0 |
 HV5800| HV5768 HOOK                                394.128 METERS 28022     |
 HV5800|---------------------------------------------------------------------|
 HV5800
 HV5800                          SUPERSEDED SURVEY CONTROL
 HV5800
 HV5800  NAD 83(1986)-  38 53 46.45129(N)    076 10 14.24273(W) AD(       ) 3
 HV5800  NAD 27      -  38 53 46.02600(N)    076 10 15.41500(W) AD(       ) 3
 HV5800  USSD        -  38 53 46.42100(N)    076 10 15.18900(W) AD(       ) 3
 HV5800
 HV5800.Superseded values are not recommended for survey control.
 HV5800
 HV5800.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5800.See file dsdata.pdf to determine how the superseded data were derived.
 HV5800
 HV5800_MARKER: Z = SEE DESCRIPTION
 HV5800_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5800_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5800+STABILITY: SURFACE MOTION
 HV5800
 HV5800  HISTORY     - Date     Condition        Report By
 HV5800  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5800  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5800
 HV5800                          STATION DESCRIPTION
 HV5800
 HV5800'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5800'STATION IS ON THE WYE ISLAND, ON EASTERN SHORE OF THE BRANCH OF
 HV5800'WYE RIVER BOUNDING WYE ISLAND ON THE W, ABOUT 1 MILE NE OF CEDAR
 HV5800'POINT AND 3/4 MILE SSW OF ENTRANCE TO WYE NARROWS, ON A MARSH
 HV5800'POINT, ABOUT 1 FOOT ABOVE HIGH WATER, 6 YARDS NE OF SHORE, 20 AND
 HV5800'40 YARDS S OF SHORE, AND 7 YARDS E OF EXTREME END OF POINT.
 HV5800'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5800'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5800'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES ABOVE
 HV5800'SURFACE OF GROUND.  SUB-SURFACE MARK IS CENTER OF 2-INCH DRAINTILE
 HV5800'PIPE, BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HV5800'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV5800'FOLLOWS--NEAR PEAK OF LARGE BARN, 1 1/8 MILES, S 3 DEG 44 MIN W.
 HV5800'PEAK BETWEEN CHIMNEYS OF HOUSE, 1-1/4 MILES, S 38 DEG 20 MIN W.
 HV5800'NEAR PEAK OF BRYAN HOUSE, 1/4 MILE, S 47 DEG 52 MIN W.  RIGHT
 HV5800'CORNER OF HOUSE IN WOODS, 7/8 MILE, N 1 DEG 59 MIN W.  NAIL IN
 HV5800'BLAZE IN 10-INCH PINE TREE, 16.78 METERS (55.1 FEET), N 16 DEG 2
 HV5800'MIN E. NAIL IN BLAZE IN 5-INCH PINE TREE, 19.51 METERS (64.0
 HV5800'FEET), N 29 DEG 11 MIN E.  NAIL IN BLAZE IN 6-INCH PINE TREE,
 HV5800'11.68 METERS (38.3 FEET), S 83 DEG 20 MIN E.
 HV5800
 HV5800                          STATION RECOVERY (1940)
 HV5800
 HV5800'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5800'STATION MARK SEARCHED FOR BUT NOT FOUND.  NONE OF REFERENCE TREES
 HV5800'COULD BE FOUND.  REFERENCES TO VARIOUS HOUSES COULD NOT BE
 HV5800'CHECKED.  IT IS POSSIBLE THAT THIS MARK IS COVERED OVER AS
 HV5800'CONSIDERABLE EROSION IS EVIDENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6388 ***********************************************************************
 HV6388  DESIGNATION -  CHINK
 HV6388  PID         -  HV6388
 HV6388  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6388  COUNTRY     -  US
 HV6388  USGS QUAD   -  ANNAPOLIS (2016)
 HV6388
 HV6388                         *CURRENT SURVEY CONTROL
 HV6388  ______________________________________________________________________
 HV6388* NAD 83(1991) POSITION- 38 57 51.17236(N) 076 28 24.15225(W)   ADJUSTED
 HV6388* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6388  ______________________________________________________________________
 HV6388  GEOID HEIGHT    -        -33.395 (meters)                     GEOID18
 HV6388  LAPLACE CORR    -         -3.47  (seconds)                    DEFLEC18
 HV6388  HORZ ORDER      -  SECOND
 HV6388
 HV6388.The horizontal coordinates were established by classical geodetic methods
 HV6388.and adjusted by the National Geodetic Survey in January 1992.
 HV6388
 HV6388.The orthometric height was scaled from a topographic map.
 HV6388
 HV6388.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6388.GEOID18 height accuracy estimate available here.
 HV6388
 HV6388.Click photographs - Photos may exist for this station.
 HV6388
 HV6388.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6388
 HV6388. The following values were computed from the NAD 83(1991) position.
 HV6388
 HV6388;                    North         East     Units Scale Factor Converg.
 HV6388;SPC MD       -   144,165.317   445,640.058   MT  0.99995103   +0 19 49.9
 HV6388;SPC MD       -   472,982.38  1,462,070.76   sFT  0.99995103   +0 19 49.9
 HV6388;UTM  18      - 4,313,837.658   372,350.605   MT  0.99980064   -0 55 35.9
 HV6388
 HV6388!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6388!SPC MD       -   1.00000496  x   0.99995103  =   0.99995599
 HV6388!UTM  18      -   1.00000496  x   0.99980064  =   0.99980560
 HV6388
 HV6388:                Primary Azimuth Mark                     Grid Az
 HV6388:SPC MD       -  ANNAPOLIS NAVAL ACAD SE MAST             045 19 33.1
 HV6388:UTM  18      -  ANNAPOLIS NAVAL ACAD SE MAST             046 34 58.9
 HV6388
 HV6388_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7235013837(NAD 83)
 HV6388
 HV6388|---------------------------------------------------------------------|
 HV6388| PID    Reference Object                     Distance      Geod. Az  |
 HV6388|                                                           dddmmss.s |
 HV6388| HV6396 ANNAPOLIS NAVAL ACAD NW MAST        APPROX. 3.2 KM 0333809.4 |
 HV6388| HV6361 GREENBURY POINT WATER TANK          APPROX. 3.3 KM 0350413.9 |
 HV6388| HV6310 NAVAL RADIO TOWER 2                 APPROX. 3.0 KM 0362042.6 |
 HV6388| HV6311 NAVAL RADIO TOWER 4                 APPROX. 3.3 KM 0372242.0 |
 HV6388| HV6322 NAVAL RADIO TOWER 3                 APPROX. 2.7 KM 0410630.7 |
 HV6388| HV6397 ANNAPOLIS NAVAL ACAD SE MAST        APPROX. 2.9 KM 0453923.0 |
 HV6388| CX2232 CHINK RM 1                           26.740 METERS 17830     |
 HV6388| CX2233 CHINK RM 2                           24.342 METERS 26021     |
 HV6388| CX2234 CHINK RM 3                           18.568 METERS 30412     |
 HV6388|---------------------------------------------------------------------|
 HV6388
 HV6388                          SUPERSEDED SURVEY CONTROL
 HV6388
 HV6388  NAD 83(1986)-  38 57 51.16862(N)    076 28 24.16376(W) AD(       ) 2
 HV6388  NAD 27      -  38 57 50.76800(N)    076 28 25.30800(W) AD(       ) 2
 HV6388
 HV6388.Superseded values are not recommended for survey control.
 HV6388
 HV6388.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6388.See file dsdata.pdf to determine how the superseded data were derived.
 HV6388
 HV6388_MARKER: DS = TRIANGULATION STATION DISK
 HV6388_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6388_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6388_STAMPING: CHINK 1932
 HV6388_MARK LOGO: CGS
 HV6388
 HV6388  HISTORY     - Date     Condition        Report By
 HV6388  HISTORY     - 1932     MONUMENTED       CGS
 HV6388  HISTORY     - 1954     MARK NOT FOUND   CGS
 HV6388  HISTORY     - 1957     MARK NOT FOUND   USGS
 HV6388  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV6388
 HV6388                          STATION DESCRIPTION
 HV6388
 HV6388'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6388'THIS STATION IS ON THE W SHORE OF THE MOUTH OF THE SEVERN RIVER
 HV6388'AND ABOUT 500 YARDS SSE OF CHINKS POINT.  STATION IS ON HIGH
 HV6388'GROUND IN A CLEARING IN FRONT OF A ROW OF SUMMER COTTAGES, ABOUT
 HV6388'15 FEET ABOVE HIGH WATER, ABOUT 10 METERS TO SOUTHWARD OF HIGHEST
 HV6388'POINT OF RIDGE AND 5 METERS BACK FROM EDGE OF CLIFF.  FROM THE
 HV6388'NE CORNER OF THE THIRD SUMMER COTTAGE FROM THE SOUTHWARD, THE
 HV6388'STATION IS 6 METERS DISTANT AND ALMOST IN RANGE WITH THE
 HV6388'NORTHWESTERNMOST NAVAL RADIO TOWER.
 HV6388'
 HV6388'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6388'CONCRETE, IN THE TOP OF TILE.
 HV6388'
 HV6388'STATION AND REFERENCE MARKS ARE SET FLUSH WITH SURFACE OF GROUND.
 HV6388
 HV6388                          STATION RECOVERY (1954)
 HV6388
 HV6388'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 HV6388'STATION WAS SEARCHED FOR BUT NOT FOUND.  REFERENCE MARK 2 WAS
 HV6388'RECOVERED IN GOOD CONDITION.  DISTANCE FROM REFERENCE MARK 2
 HV6388'INDICATES THAT THE STATION MARK HAS WASHED OUT AND SHOULD BE
 HV6388'CONSIDERED LOST.  REFERENCE MARK 1 COULD NOT BE FOUND AND IS
 HV6388'BELIEVED WASHED OUT.  A SUMMER COTTAGE HAS BEEN ERECTED OVER
 HV6388'REFERENCE MARK 3.
 HV6388
 HV6388                          STATION RECOVERY (1957)
 HV6388
 HV6388'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV6388'STATION LOST WHEN BANK WAS WASHED AWAY.
 HV6388
 HV6388                          STATION RECOVERY (2003)
 HV6388
 HV6388'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6388'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1506 ***********************************************************************
 HV1506  DESIGNATION -  CHIS SQ 1
 HV1506  PID         -  HV1506
 HV1506  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1506  COUNTRY     -  US
 HV1506  USGS QUAD   -  BRISTOL (2016)
 HV1506
 HV1506                         *CURRENT SURVEY CONTROL
 HV1506  ______________________________________________________________________
 HV1506* NAD 83(1986) POSITION- 38 49 14.     (N) 076 38 53.     (W)   SCALED
 HV1506* NAVD 88 ORTHO HEIGHT -    48.815 (meters)      160.15  (feet) ADJUSTED
 HV1506  ______________________________________________________________________
 HV1506  GEOID HEIGHT    -        -33.221 (meters)                     GEOID18
 HV1506  DYNAMIC HEIGHT  -         48.787 (meters)      160.06  (feet) COMP
 HV1506  MODELED GRAVITY -    980,056.1   (mgal)                       NAVD 88
 HV1506
 HV1506  VERT ORDER      -  SECOND    CLASS 0
 HV1506
 HV1506.The horizontal coordinates were scaled from a map and have
 HV1506.an estimated accuracy of +/- 6 seconds.
 HV1506
 HV1506.The orthometric height was determined by differential leveling and
 HV1506.adjusted by the NATIONAL GEODETIC SURVEY
 HV1506.in June 1991.
 HV1506
 HV1506.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1506.GEOID18 height accuracy estimate available here.
 HV1506
 HV1506.Click photographs - Photos may exist for this station.
 HV1506
 HV1506.The dynamic height is computed by dividing the NAVD 88
 HV1506.geopotential number by the normal gravity value computed on the
 HV1506.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1506.degrees latitude (g = 980.6199 gals.).
 HV1506
 HV1506.The modeled gravity was interpolated from observed gravity values.
 HV1506
 HV1506;                    North         East    Units  Estimated Accuracy
 HV1506;SPC MD       -   128,150.      430,560.      MT  (+/- 180 meters Scaled)
 HV1506
 HV1506_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH569981(NAD 83)
 HV1506
 HV1506                          SUPERSEDED SURVEY CONTROL
 HV1506
 HV1506  NGVD 29 (11/26/84)   49.093  (m)          161.07   (f) ADJUSTED    2 0
 HV1506
 HV1506.Superseded values are not recommended for survey control.
 HV1506
 HV1506.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1506.See file dsdata.pdf to determine how the superseded data were derived.
 HV1506
 HV1506_MARKER: Q = CHISELED SQUARE
 HV1506_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1506_SP_SET: CULVERT
 HV1506_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1506
 HV1506  HISTORY     - Date     Condition        Report By
 HV1506  HISTORY     - 1935     MONUMENTED       CGS
 HV1506  HISTORY     - 1938     POOR             CGS
 HV1506  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV1506  HISTORY     - 20031001 MARK NOT FOUND   USPSQD
 HV1506
 HV1506                          STATION DESCRIPTION
 HV1506
 HV1506'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 HV1506'2.2 MI W FROM LOTHIAN.
 HV1506'2.2 MILES WEST ALONG STATE HIGHWAY 4 FROM THE POST OFFICE AT
 HV1506'LOTHIAN, AND ON THE TOP OF THE SOUTH HEADWALL OF A CONCRETE
 HV1506'CULVERT.  A CHISELED SQUARE.
 HV1506
 HV1506                          STATION RECOVERY (1971)
 HV1506
 HV1506'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV1506'MARK NOT FOUND.
 HV1506
 HV1506                          STATION RECOVERY (2003)
 HV1506
 HV1506'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV1506'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1584 ***********************************************************************
 JW1584  DESIGNATION -  CHIS SQ 1
 JW1584  PID         -  JW1584
 JW1584  STATE/COUNTY-  MD/GARRETT
 JW1584  COUNTRY     -  US
 JW1584  USGS QUAD   -  OAKLAND (2016)
 JW1584
 JW1584                         *CURRENT SURVEY CONTROL
 JW1584  ______________________________________________________________________
 JW1584* NAD 83(1986) POSITION- 39 24 13.35   (N) 079 23 56.16   (W)   HD_HELD1
 JW1584* NAVD 88 ORTHO HEIGHT -   731.205 (meters)     2398.96  (feet) ADJUSTED
 JW1584  ______________________________________________________________________
 JW1584  GEOID HEIGHT    -        -31.143 (meters)                     GEOID18
 JW1584  DYNAMIC HEIGHT  -        730.708 (meters)     2397.33  (feet) COMP
 JW1584  MODELED GRAVITY -    979,922.7   (mgal)                       NAVD 88
 JW1584
 JW1584  VERT ORDER      -  SECOND    CLASS I
 JW1584
 JW1584.The horizontal coordinates were determined by differentially corrected
 JW1584.hand held GPS observations or other comparable positioning techniques
 JW1584.and have an estimated accuracy of +/- 3 meters.
 JW1584
 JW1584.The orthometric height was determined by differential leveling and
 JW1584.adjusted by the NATIONAL GEODETIC SURVEY
 JW1584.in April 1995.
 JW1584
 JW1584.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1584.GEOID18 height accuracy estimate available here.
 JW1584
 JW1584.Click photographs - Photos may exist for this station.
 JW1584
 JW1584.The dynamic height is computed by dividing the NAVD 88
 JW1584.geopotential number by the normal gravity value computed on the
 JW1584.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1584.degrees latitude (g = 980.6199 gals.).
 JW1584
 JW1584.The modeled gravity was interpolated from observed gravity values.
 JW1584
 JW1584;                    North         East    Units  Estimated Accuracy
 JW1584;SPC MD       -   195,538.9     193,400.5     MT  (+/- 3 meters HH1 GPS) 
 JW1584
 JW1584_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3785162800(NAD 83)
 JW1584
 JW1584                          SUPERSEDED SURVEY CONTROL
 JW1584
 JW1584.No superseded survey control is available for this station.
 JW1584
 JW1584_MARKER: Q = CHISELED SQUARE
 JW1584_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JW1584_SP_SET: HEADWALL
 JW1584_MARK LOGO: NONE
 JW1584_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1584_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1584+STABILITY: SURFACE MOTION
 JW1584
 JW1584  HISTORY     - Date     Condition        Report By
 JW1584  HISTORY     - 1991     MONUMENTED       MDSHA
 JW1584  HISTORY     - 20010717 GOOD             MDSHA
 JW1584
 JW1584                          STATION DESCRIPTION
 JW1584
 JW1584'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW1584'THE MARK IS LOCATED ABOUT 3.6 MI (5.8 KM) NORTH-NORTHEAST OF GORTNER,
 JW1584'0.7 MI (1.1 KM) SOUTHEAST OF OAKLAND AND AT THE INTERSECTION OF U.S.
 JW1584'HIGHWAY 219 AND STATE HIGHWAY 135.  IT IS ON ROAD RIGHT-OF-WAY.  TO
 JW1584'REACH FROM THE POST OFFICE IN OAKLAND, GO SOUTHWEST ON SECOND STREET
 JW1584'FOR 0.2 MI (0.3 KM) TO U.S. HIGHWAY 219.  TURN LEFT AND GO SOUTH ON
 JW1584'U.S. HIGHWAY 219 FOR 0.6 MI (1.0 KM) TO ITS INTERSECTION WITH STATE
 JW1584'HIGHWAY 135 AND THE MARKER ON THE RIGHT.  THE POINT IS MARKED WITH A
 JW1584'CHISLED SQUARE IN THE TOP OF CONCRETE HEADWALL.  IT IS 46.0 FT (14.0
 JW1584'M) SOUTHWEST OF THE CENTER OF U.S. HIGHWAY 219, 11.0 FT (3.4 M)
 JW1584'SOUTHWEST OF THE CENTER OF A DROPINLET, 90.5 FT (27.6 M) EAST OF THE
 JW1584'SOUTHEAST CORNER OF A ONE STORY BRICK AND FRAME BUILDING (FORMERLY
 JW1584'CEE DEES RESTAURANT) AND 31.0 FT (9.4 M) SOUTHEAST OF THE MOST
 JW1584'SOUTHERN MACADAME ENTRANCE FOR THE BUILDING.  IT IS ABOUT 2.0 FT (0.6
 JW1584'M) BELOW THE SURFACE OF THE ROAD.
 JW1584
 JW1584                          STATION RECOVERY (2001)
 JW1584
 JW1584'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JW1584'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE TO REACH SECTION OF
 JW1584'THE DESCRIPTION IS GOOD.  THE CEE DEES RESTAURANT HAS BEEN TORN DOWN.
 JW1584'THE STATION IS NOW LOCATED BETWEEN A BURGER KING RESTAURANT AND THE
 JW1584'HIGHWAY.  IT IS 12.8 FEET (3.9 M) EAST OF A FIRE HYDRANT, 10.0 FEET
 JW1584'(3.0 M) SOUTHWEST OF THE CENTER OF A METAL DROP INLET GRATE, 56.4 FEET
 JW1584'(17.2 M) SOUTHEAST OF POWER POLE NUMBER 1119915, 78.5 FEET (23.9 M)
 JW1584'NORTHEAST OF A METAL SUPPORT POLE FOR A BURGER KING SIGN AND ABOUT 5
 JW1584'FEET (1.5 M) LOWER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1594 ***********************************************************************
 JW1594  DESIGNATION -  CHIS SQ 2
 JW1594  PID         -  JW1594
 JW1594  STATE/COUNTY-  MD/GARRETT
 JW1594  COUNTRY     -  US
 JW1594  USGS QUAD   -  TABLE ROCK (2016)
 JW1594
 JW1594                         *CURRENT SURVEY CONTROL
 JW1594  ______________________________________________________________________
 JW1594* NAD 83(1986) POSITION- 39 17 45.     (N) 079 25 48.     (W)   SCALED
 JW1594* NAVD 88 ORTHO HEIGHT -   840.790 (meters)     2758.49  (feet) ADJUSTED
 JW1594  ______________________________________________________________________
 JW1594  GEOID HEIGHT    -        -31.012 (meters)                     GEOID18
 JW1594  DYNAMIC HEIGHT  -        840.188 (meters)     2756.52  (feet) COMP
 JW1594  MODELED GRAVITY -    979,882.3   (mgal)                       NAVD 88
 JW1594
 JW1594  VERT ORDER      -  SECOND    CLASS I
 JW1594
 JW1594.The horizontal coordinates were scaled from a map and have
 JW1594.an estimated accuracy of +/- 6 seconds.
 JW1594
 JW1594.The orthometric height was determined by differential leveling and
 JW1594.adjusted by the NATIONAL GEODETIC SURVEY
 JW1594.in April 1995.
 JW1594
 JW1594.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1594.GEOID18 height accuracy estimate available here.
 JW1594
 JW1594.Click photographs - Photos may exist for this station.
 JW1594
 JW1594.The dynamic height is computed by dividing the NAVD 88
 JW1594.geopotential number by the normal gravity value computed on the
 JW1594.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1594.degrees latitude (g = 980.6199 gals.).
 JW1594
 JW1594.The modeled gravity was interpolated from observed gravity values.
 JW1594
 JW1594;                    North         East    Units  Estimated Accuracy
 JW1594;SPC MD       -   183,640.      190,410.      MT  (+/- 180 meters Scaled)
 JW1594
 JW1594_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD353507(NAD 83)
 JW1594
 JW1594                          SUPERSEDED SURVEY CONTROL
 JW1594
 JW1594.No superseded survey control is available for this station.
 JW1594
 JW1594_MARKER: Q = CHISELED SQUARE
 JW1594_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JW1594_SP_SET: HEADWALL
 JW1594_MARK LOGO: NONE
 JW1594_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1594_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1594+STABILITY: SURFACE MOTION
 JW1594
 JW1594  HISTORY     - Date     Condition        Report By
 JW1594  HISTORY     - 1991     MONUMENTED       MDSHA
 JW1594
 JW1594                          STATION DESCRIPTION
 JW1594
 JW1594'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW1594'THE MARK IS LOCATED 0.75 MI (1.21 KM) SOUTHWEST OF TABLE ROCK, 2.05
 JW1594'MI (3.30 KM) SOUTHEAST OF REDHOUSE AND ALONG U.S. HIGHWAY 50.  IT IS
 JW1594'ON ROAD RIGHT-OF-WAY.  TO REACH THE MARK FROM THE POST OFFICE IN
 JW1594'OAKLAND, GO SOUTHWEST ON SECOND STREET FOR 0.2 MI (0.3 KM) TO U.S.
 JW1594'HIGHWAY 219.  TURN LEFT AND GO SOUTH ON U.S. HIGHWAY 219 FOR 8.6 MI
 JW1594'(13.8 KM) TO U.S. HIGHWAY 50.  TURN LEFT AND GO EAST ON U.S.
 JW1594'HIGHWAY 50 FOR 1.6 MI (2.6 KM) TO THE MARK ON THE RIGHT.  THE POINT
 JW1594'IS MARKED WITH A SQUARE CUT IN THE EAST END OF A CONCRETE HEADWALL.
 JW1594'IT IS 28.5 FT (8.7 M) SOUTH OF THE CENTER OF U.S. HIGHWAY 50, 25.0
 JW1594'FT (7.6 M) NORTHWEST OF A POWER POLE NUMBERED WM 410, 43 FT (13.1 M)
 JW1594'NORTHWEST OF A WOODS LINE AND 73.5 FT (22.4 M) SOUTHWEST OF A
 JW1594'TELEPHONE POLE NUMBERED C AND P 296.  IT IS ABOUT 1.0 FT (0.3 M)
 JW1594'BELOW THE SURFACE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2168 ***********************************************************************
 JV2168  DESIGNATION -  CHISELED CROSS BORR
 JV2168  PID         -  JV2168
 JV2168  STATE/COUNTY-  MD/MONTGOMERY
 JV2168  COUNTRY     -  US
 JV2168  USGS QUAD   -  KENSINGTON (2016)
 JV2168
 JV2168                         *CURRENT SURVEY CONTROL
 JV2168  ______________________________________________________________________
 JV2168* NAD 83(1986) POSITION- 39 02 03.     (N) 077 05 16.     (W)   SCALED
 JV2168* NAVD 88 ORTHO HEIGHT -    87.040 (meters)      285.56  (feet) ADJUSTED
 JV2168  ______________________________________________________________________
 JV2168  GEOID HEIGHT    -        -31.850 (meters)                     GEOID18
 JV2168  DYNAMIC HEIGHT  -         86.993 (meters)      285.41  (feet) COMP
 JV2168  MODELED GRAVITY -    980,092.0   (mgal)                       NAVD 88
 JV2168
 JV2168  VERT ORDER      -  FIRST     CLASS II
 JV2168
 JV2168.The horizontal coordinates were scaled from a map and have
 JV2168.an estimated accuracy of +/- 6 seconds.
 JV2168
 JV2168.The orthometric height was determined by differential leveling and
 JV2168.adjusted by the NATIONAL GEODETIC SURVEY
 JV2168.in June 1991.
 JV2168
 JV2168.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2168.GEOID18 height accuracy estimate available here.
 JV2168
 JV2168.Click photographs - Photos may exist for this station.
 JV2168
 JV2168.The dynamic height is computed by dividing the NAVD 88
 JV2168.geopotential number by the normal gravity value computed on the
 JV2168.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2168.degrees latitude (g = 980.6199 gals.).
 JV2168
 JV2168.The modeled gravity was interpolated from observed gravity values.
 JV2168
 JV2168;                    North         East    Units  Estimated Accuracy
 JV2168;SPC MD       -   151,800.      392,400.      MT  (+/- 180 meters Scaled)
 JV2168
 JV2168_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ192226(NAD 83)
 JV2168
 JV2168                          SUPERSEDED SURVEY CONTROL
 JV2168
 JV2168  NGVD 29 (11/26/84)   87.260  (m)          286.29   (f) ADJUSTED    1 2
 JV2168
 JV2168.Superseded values are not recommended for survey control.
 JV2168
 JV2168.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2168.See file dsdata.pdf to determine how the superseded data were derived.
 JV2168
 JV2168_MARKER: X = CHISELED CROSS
 JV2168_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2168_SP_SET: FOUNDATION
 JV2168_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2168
 JV2168  HISTORY     - Date     Condition        Report By
 JV2168  HISTORY     - UNK      MONUMENTED       BORR
 JV2168  HISTORY     - 1938     GOOD             CGS
 JV2168
 JV2168                          STATION DESCRIPTION
 JV2168
 JV2168'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2168'0.5 MI SE FROM GARRETT PARK.
 JV2168'0.5 MILE SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2168'THE STATION AT GARRETT PARK, MONTGOMERY COUNTY, 50 FEET NORTH
 JV2168'OF STEEL OVERHEAD BRIDGE 12-C, ACROSS THE TRACK FROM MILEPOST
 JV2168'W 12, AT THE WATER TOWER FOR NORTH-BOUND TRAINS, AND ON THE
 JV2168'SOUTHWEST CORNER OF THE CONCRETE FOUNDATION.  A CHISELED CROSS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0393 ***********************************************************************
 HV0393  DESIGNATION -  CHISELED SQUARE
 HV0393  PID         -  HV0393
 HV0393  STATE/COUNTY-  MD/ST MARYS
 HV0393  COUNTRY     -  US
 HV0393  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV0393
 HV0393                         *CURRENT SURVEY CONTROL
 HV0393  ______________________________________________________________________
 HV0393* NAD 83(1986) POSITION- 38 13 11.     (N) 076 25 51.     (W)   SCALED
 HV0393* NAVD 88 ORTHO HEIGHT -    31.784 (meters)      104.28  (feet) ADJUSTED
 HV0393  ______________________________________________________________________
 HV0393  GEOID HEIGHT    -        -34.685 (meters)                     GEOID18
 HV0393  DYNAMIC HEIGHT  -         31.764 (meters)      104.21  (feet) COMP
 HV0393  MODELED GRAVITY -    980,001.0   (mgal)                       NAVD 88
 HV0393
 HV0393  VERT ORDER      -  FIRST     CLASS II
 HV0393
 HV0393.The horizontal coordinates were scaled from a map and have
 HV0393.an estimated accuracy of +/- 6 seconds.
 HV0393
 HV0393.The orthometric height was determined by differential leveling and
 HV0393.adjusted by the NATIONAL GEODETIC SURVEY
 HV0393.in June 1991.
 HV0393
 HV0393.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0393.GEOID18 height accuracy estimate available here.
 HV0393
 HV0393.Click photographs - Photos may exist for this station.
 HV0393
 HV0393.The dynamic height is computed by dividing the NAVD 88
 HV0393.geopotential number by the normal gravity value computed on the
 HV0393.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0393.degrees latitude (g = 980.6199 gals.).
 HV0393
 HV0393.The modeled gravity was interpolated from observed gravity values.
 HV0393
 HV0393;                    North         East    Units  Estimated Accuracy
 HV0393;SPC MD       -    61,550.      449,840.      MT  (+/- 180 meters Scaled)
 HV0393
 HV0393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH747311(NAD 83)
 HV0393
 HV0393                          SUPERSEDED SURVEY CONTROL
 HV0393
 HV0393  NGVD 29 (11/26/84)   32.075  (m)          105.23   (f) ADJUSTED    1 2
 HV0393
 HV0393.Superseded values are not recommended for survey control.
 HV0393
 HV0393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0393.See file dsdata.pdf to determine how the superseded data were derived.
 HV0393
 HV0393_MARKER: Q = CHISELED SQUARE
 HV0393_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0393_SP_SET: SIDEWALK
 HV0393_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0393
 HV0393  HISTORY     - Date     Condition        Report By
 HV0393  HISTORY     - 1941     MONUMENTED       CGS
 HV0393  HISTORY     - 20020329 MARK NOT FOUND   MDSHA
 HV0393
 HV0393                          STATION DESCRIPTION
 HV0393
 HV0393'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0393'AT PARK HALL.
 HV0393'AT PARK HALL, SAINT MARYS COUNTY, ON STATE HIGHWAY 5, 48 FEET
 HV0393'WEST OF UNITED STATES GEOLOGICAL SURVEY BENCH MARK WO 9,
 HV0393'DESCRIBED ABOVE, 32 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY,
 HV0393'16 FEET WEST OF THE ENTRANCE TO THE GENERAL STORE, AND ON THE
 HV0393'SOUTHWEST CORNER OF THE SIDEWALK LEADING TO THE STORE DWELLING.
 HV0393'A CHISELED SQUARE.
 HV0393
 HV0393                          STATION RECOVERY (2002)
 HV0393
 HV0393'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0393'NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2535 ***********************************************************************
 JV2535  DESIGNATION -  CHISELED SQUARE 1 PRR
 JV2535  PID         -  JV2535
 JV2535  STATE/COUNTY-  MD/FREDERICK
 JV2535  COUNTRY     -  US
 JV2535  USGS QUAD   -  FREDERICK (2016)
 JV2535
 JV2535                         *CURRENT SURVEY CONTROL
 JV2535  ______________________________________________________________________
 JV2535* NAD 83(1986) POSITION- 39 27 13.     (N) 077 23 57.     (W)   SCALED
 JV2535* NAVD 88 ORTHO HEIGHT -    95.930 (meters)      314.73  (feet) ADJUSTED
 JV2535  ______________________________________________________________________
 JV2535  GEOID HEIGHT    -        -32.793 (meters)                     GEOID18
 JV2535  DYNAMIC HEIGHT  -         95.879 (meters)      314.56  (feet) COMP
 JV2535  MODELED GRAVITY -    980,089.9   (mgal)                       NAVD 88
 JV2535
 JV2535  VERT ORDER      -  SECOND    CLASS 0
 JV2535
 JV2535.The horizontal coordinates were scaled from a map and have
 JV2535.an estimated accuracy of +/- 6 seconds.
 JV2535
 JV2535.The orthometric height was determined by differential leveling and
 JV2535.adjusted by the NATIONAL GEODETIC SURVEY
 JV2535.in June 1991.
 JV2535
 JV2535.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2535.GEOID18 height accuracy estimate available here.
 JV2535
 JV2535.Click photographs - Photos may exist for this station.
 JV2535
 JV2535.The dynamic height is computed by dividing the NAVD 88
 JV2535.geopotential number by the normal gravity value computed on the
 JV2535.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2535.degrees latitude (g = 980.6199 gals.).
 JV2535
 JV2535.The modeled gravity was interpolated from observed gravity values.
 JV2535
 JV2535;                    North         East    Units  Estimated Accuracy
 JV2535;SPC MD       -   198,440.      365,640.      MT  (+/- 180 meters Scaled)
 JV2535
 JV2535_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ935698(NAD 83)
 JV2535
 JV2535                          SUPERSEDED SURVEY CONTROL
 JV2535
 JV2535  NGVD 29 (11/26/84)   96.148  (m)          315.45   (f) ADJUSTED    2 0
 JV2535
 JV2535.Superseded values are not recommended for survey control.
 JV2535
 JV2535.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2535.See file dsdata.pdf to determine how the superseded data were derived.
 JV2535
 JV2535_MARKER: Q = CHISELED SQUARE
 JV2535_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2535_SP_SET: WALKWAY
 JV2535_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2535
 JV2535  HISTORY     - Date     Condition        Report By
 JV2535  HISTORY     - UNK      MONUMENTED       PRR
 JV2535  HISTORY     - 1935     GOOD             CGS
 JV2535  HISTORY     - 20031102 MARK NOT FOUND   USPSQD
 JV2535
 JV2535                          STATION DESCRIPTION
 JV2535
 JV2535'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2535'2.7 MI NE FROM FREDERICK.
 JV2535'ABOUT 2.7 MILES NORTHEAST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV2535'THE CITY OPERA HOUSE AT FREDERICK, FREDERICK COUNTY, AT HARMONY
 JV2535'GROVE, ABOUT 444 FEET SOUTH OF MILEPOST 3, 87 FEET EAST OF
 JV2535'THE CENTER LINE OF U.S. HIGHWAY 15, 33 FEET WEST OF THE CENTER
 JV2535'LINE OF THE TRACK, 15 FEET EAST OF THE BACK DOOR AT THE EAST
 JV2535'SIDE OF THE GENERAL STORE, AND ON THE TOP OF THE PAVED WALK AT
 JV2535'THE BACK OF THE STORE.  A CHISELED SQUARE.
 JV2535
 JV2535                          STATION RECOVERY (2003)
 JV2535
 JV2535'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV2535'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2536 ***********************************************************************
 JV2536  DESIGNATION -  CHISELED SQUARE 2
 JV2536  PID         -  JV2536
 JV2536  STATE/COUNTY-  MD/FREDERICK
 JV2536  COUNTRY     -  US
 JV2536  USGS QUAD   -  FREDERICK (2016)
 JV2536
 JV2536                         *CURRENT SURVEY CONTROL
 JV2536  ______________________________________________________________________
 JV2536* NAD 83(1986) POSITION- 39 27 54.56   (N) 077 23 34.11   (W)   HD_HELD1
 JV2536* NAVD 88 ORTHO HEIGHT -    86.364 (meters)      283.35  (feet) ADJUSTED
 JV2536  ______________________________________________________________________
 JV2536  GEOID HEIGHT    -        -32.811 (meters)                     GEOID18
 JV2536  DYNAMIC HEIGHT  -         86.317 (meters)      283.19  (feet) COMP
 JV2536  MODELED GRAVITY -    980,089.8   (mgal)                       NAVD 88
 JV2536
 JV2536  VERT ORDER      -  SECOND    CLASS 0
 JV2536
 JV2536.The horizontal coordinates were determined by differentially corrected
 JV2536.hand held GPS observations or other comparable positioning techniques
 JV2536.and have an estimated accuracy of +/- 3 meters.
 JV2536
 JV2536.The orthometric height was determined by differential leveling and
 JV2536.adjusted by the NATIONAL GEODETIC SURVEY
 JV2536.in June 1991.
 JV2536
 JV2536.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2536.GEOID18 height accuracy estimate available here.
 JV2536
 JV2536.Click photographs - Photos may exist for this station.
 JV2536
 JV2536.The dynamic height is computed by dividing the NAVD 88
 JV2536.geopotential number by the normal gravity value computed on the
 JV2536.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2536.degrees latitude (g = 980.6199 gals.).
 JV2536
 JV2536.The modeled gravity was interpolated from observed gravity values.
 JV2536
 JV2536;                    North         East    Units  Estimated Accuracy
 JV2536;SPC MD       -   199,719.0     366,196.4     MT  (+/- 3 meters HH1 GPS) 
 JV2536
 JV2536_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9415471130(NAD 83)
 JV2536
 JV2536                          SUPERSEDED SURVEY CONTROL
 JV2536
 JV2536  NGVD 29 (11/26/84)   86.586  (m)          284.07   (f) ADJUSTED    2 0
 JV2536
 JV2536.Superseded values are not recommended for survey control.
 JV2536
 JV2536.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2536.See file dsdata.pdf to determine how the superseded data were derived.
 JV2536
 JV2536_MARKER: Q = CHISELED SQUARE
 JV2536_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2536_SP_SET: BRIDGE
 JV2536_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2536_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2536+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2020
 JV2536
 JV2536  HISTORY     - Date     Condition        Report By
 JV2536  HISTORY     - UNK      MONUMENTED       PRR
 JV2536  HISTORY     - 1935     GOOD             CGS
 JV2536  HISTORY     - 20091025 GOOD             GEOCAC
 JV2536  HISTORY     - 20190907 GOOD             INDIV
 JV2536  HISTORY     - 20200116 GOOD             WTBALL
 JV2536  HISTORY     - 20200321 GOOD             WSRR
 JV2536
 JV2536                          STATION DESCRIPTION
 JV2536
 JV2536'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2536'2.5 MI SW FROM WALKERSVILLE.
 JV2536'ABOUT 2.5 MILES SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV2536'THE STATION AT WALKERSVILLE, FREDERICK COUNTY, AT BRIDGE
 JV2536'65+20 OVER MONOCACY RIVER, ON THE TOP OF THE SOUTH END OF THE
 JV2536'WEST CONCRETE WING WALL, AND 15 FEET WEST OF THE CENTER LINE OF
 JV2536'THE TRACK.  A CHISELED SQUARE.
 JV2536
 JV2536                          STATION RECOVERY (2009)
 JV2536
 JV2536'RECOVERY NOTE BY GEOCACHING 2009 (MFM)
 JV2536'RECOVERED IN GOOD CONDITION.
 JV2536'
 JV2536'STATION IS ABOUT 2.42 MILES SW FROM WALKERSVILLE, ABOUT 2.5 MILES
 JV2536'RAILROAD SOUTH ALONG THE WALKERSVILLE SOUTHERN RAILROAD FROM THE DEPOT
 JV2536'IN WALKERSVILLE, ON THE MONOCACY RIVER BRIDGE.
 JV2536'STATION IS LOCATED ON THE SOUTHERN HEADWALL OF THE BRIDGE, ON THE WEST
 JV2536'SIDE OF THE TRACKS.
 JV2536'
 JV2536'NOTE THAT THE BRIDGE TO THE SOUTH OF STATION OVER THE LITTLE TUSCARORA
 JV2536'CREEK ALSO HAS A MARK IN SIMILAR LOCATION TO THIS STATION, NEAR A
 JV2536'FREDERICK COUNTY VERTICAL STATION. THAT MARK IS NOT THIS STATION.
 JV2536
 JV2536                          STATION RECOVERY (2019)
 JV2536
 JV2536'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2019 (MFM)
 JV2536'RECOVERED IN GOOD CONDITION.
 JV2536
 JV2536                          STATION RECOVERY (2020)
 JV2536
 JV2536'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV2536'RECOVERED IN GOOD CONDITION.
 JV2536
 JV2536                          STATION RECOVERY (2020)
 JV2536
 JV2536'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV2536'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1806 ***********************************************************************
 JV1806  DESIGNATION -  CHISELED SQUARE 2
 JV1806  PID         -  JV1806
 JV1806  STATE/COUNTY-  MD/CARROLL
 JV1806  COUNTRY     -  US
 JV1806  USGS QUAD   -  LINEBORO (2016)
 JV1806
 JV1806                         *CURRENT SURVEY CONTROL
 JV1806  ______________________________________________________________________
 JV1806* NAD 83(1986) POSITION- 39 38 18.1    (N) 076 51 48.9    (W)   HD_HELD2
 JV1806* NAVD 88 ORTHO HEIGHT -   252.487 (meters)      828.37  (feet) ADJUSTED
 JV1806  ______________________________________________________________________
 JV1806  GEOID HEIGHT    -        -32.234 (meters)                     GEOID18
 JV1806  DYNAMIC HEIGHT  -        252.358 (meters)      827.94  (feet) COMP
 JV1806  MODELED GRAVITY -    980,106.4   (mgal)                       NAVD 88
 JV1806
 JV1806  VERT ORDER      -  SECOND    CLASS 0
 JV1806
 JV1806.The horizontal coordinates were established by autonomous hand held GPS
 JV1806.observations and have an estimated accuracy of +/- 10 meters.
 JV1806
 JV1806.The orthometric height was determined by differential leveling and
 JV1806.adjusted by the NATIONAL GEODETIC SURVEY
 JV1806.in June 1991.
 JV1806
 JV1806.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1806.GEOID18 height accuracy estimate available here.
 JV1806
 JV1806.Click photographs - Photos may exist for this station.
 JV1806
 JV1806.The dynamic height is computed by dividing the NAVD 88
 JV1806.geopotential number by the normal gravity value computed on the
 JV1806.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1806.degrees latitude (g = 980.6199 gals.).
 JV1806
 JV1806.The modeled gravity was interpolated from observed gravity values.
 JV1806
 JV1806;                    North         East    Units  Estimated Accuracy
 JV1806;SPC MD       -   218,886.      411,711.      MT  (+/- 10 meters HH2 GPS)
 JV1806
 JV1806_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4008389279(NAD 83)
 JV1806
 JV1806                          SUPERSEDED SURVEY CONTROL
 JV1806
 JV1806  NGVD 29 (11/26/84)  252.702  (m)          829.07   (f) ADJUSTED    2 0
 JV1806
 JV1806.Superseded values are not recommended for survey control.
 JV1806
 JV1806.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1806.See file dsdata.pdf to determine how the superseded data were derived.
 JV1806
 JV1806_MARKER: Q = CHISELED SQUARE
 JV1806_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1806_SP_SET: BOX CULVERT HEADWALL
 JV1806_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1806+STABILITY: SURFACE MOTION
 JV1806_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1806+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2020
 JV1806
 JV1806  HISTORY     - Date     Condition        Report By
 JV1806  HISTORY     - UNK      MONUMENTED       MDSRC
 JV1806  HISTORY     - 1967     GOOD             MDSRC
 JV1806  HISTORY     - 19900619 GOOD             NGS
 JV1806  HISTORY     - 20040630 GOOD             GEOCAC
 JV1806  HISTORY     - 20070605 GOOD             MD-005
 JV1806  HISTORY     - 20080130 GOOD             MDSHA
 JV1806  HISTORY     - 20091013 GOOD             MD-005
 JV1806  HISTORY     - 20200321 GOOD             WTBALL
 JV1806
 JV1806                          STATION DESCRIPTION
 JV1806
 JV1806'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1806'0.4 MI N FROM GREENMOUNT.
 JV1806'TO REACH FROM THE GREENMOUNT RAILROAD STATION AT GREENMOUNT,
 JV1806'MARYLAND, PROCEED NORTH ALONG THE WESTERN MARYLAND RAILROAD
 JV1806'TRACKS FOR 0.45 MILES.  IT IS 12.0 FEET EAST OF THE CENTERLINE
 JV1806'OF TRACKS AND 144.4 FEET SOUTH OF THE CENTERLINE OF A FARM
 JV1806'LANE.  A CHISLED SQUARE ON THE NORTH END OF A CONCRETE CULVERT.
 JV1806
 JV1806                          STATION RECOVERY (1990)
 JV1806
 JV1806'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV1806'RECOVERED IN GOOD CONDITION.
 JV1806
 JV1806                          STATION RECOVERY (2004)
 JV1806
 JV1806'RECOVERY NOTE BY GEOCACHING 2004 (DH)
 JV1806'RECOVERED IN GOOD CONDITION.
 JV1806
 JV1806                          STATION RECOVERY (2007)
 JV1806
 JV1806'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 JV1806'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2007 (PAS).
 JV1806'A COMPLETE DESCRIPTION FOLLOWS - THE STATION IS LOCATED 2.2 MILES
 JV1806'SOUTHEAST OF MANCHESTER IN CARROLL COUNTY.
 JV1806'
 JV1806'TO REACH THE STATION FROM THE INTERSECTION OF HANOVER PIKE (MARYLAND
 JV1806'ROUTE 30) AND MANCHESTER ROAD (MARYLAND ROUTE 27), PROCEED SOUTHEAST
 JV1806'ON HANOVER PIKE 2.1 MILES TO EAGLE RIDGE COURT.
 JV1806'TURN LEFT ON EAGLE RIDGE COURT AND PROCEED NORTHEAST 0.2 MILES TO THE
 JV1806'RAILROAD CROSSING.
 JV1806'TURN RIGHT AND PROCEED SOUTH 140 FEET TO THE CONCRETE CULVERT UNDER
 JV1806'THE RAILROAD AND THE STATION MARK ON THE LEFT.
 JV1806'
 JV1806'THE STATION IS A CHISELED SQUARE ON THE NORTHEAST CORNER OF THE EAST
 JV1806'WALL OF THE CONCRETE CULVERT (21.8 FEET LONG).
 JV1806'
 JV1806'THE STATION IS 12.0 FEET EAST OF THE CENTERLINE OF THE RAILROAD TRACK
 JV1806'AND 144.4 FEET SOUTH OF THE CENTERLINE OF EAGLE RIDGE COURT.
 JV1806'
 JV1806'THE MARK IS NEAR THE EDGE OF THE CULVERT WALL SO A BIPOD OR OTHER
 JV1806'SPECIAL EQUIPMENT MAY BE NEEDED WHEN ATTEMPTING TO SETUP EQUIPMENT
 JV1806'OVER THE MARK.
 JV1806
 JV1806                          STATION RECOVERY (2008)
 JV1806
 JV1806'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV1806'RECOVERED AS DESCRIBED.
 JV1806
 JV1806                          STATION RECOVERY (2009)
 JV1806
 JV1806'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 JV1806'RECOVERED IN GOOD CONDITION.
 JV1806
 JV1806                          STATION RECOVERY (2020)
 JV1806
 JV1806'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV1806'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2538 ***********************************************************************
 JV2538  DESIGNATION -  CHISELED SQUARE 3
 JV2538  PID         -  JV2538
 JV2538  STATE/COUNTY-  MD/FREDERICK
 JV2538  COUNTRY     -  US
 JV2538  USGS QUAD   -  WALKERSVILLE (2016)
 JV2538
 JV2538                         *CURRENT SURVEY CONTROL
 JV2538  ______________________________________________________________________
 JV2538* NAD 83(1986) POSITION- 39 29 07.     (N) 077 21 21.     (W)   SCALED
 JV2538* NAVD 88 ORTHO HEIGHT -    89.742 (meters)      294.43  (feet) ADJUSTED
 JV2538  ______________________________________________________________________
 JV2538  GEOID HEIGHT    -        -32.798 (meters)                     GEOID18
 JV2538  DYNAMIC HEIGHT  -         89.694 (meters)      294.27  (feet) COMP
 JV2538  MODELED GRAVITY -    980,089.2   (mgal)                       NAVD 88
 JV2538
 JV2538  VERT ORDER      -  SECOND    CLASS 0
 JV2538
 JV2538.The horizontal coordinates were scaled from a map and have
 JV2538.an estimated accuracy of +/- 6 seconds.
 JV2538
 JV2538.The orthometric height was determined by differential leveling and
 JV2538.adjusted by the NATIONAL GEODETIC SURVEY
 JV2538.in June 1991.
 JV2538
 JV2538.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2538.GEOID18 height accuracy estimate available here.
 JV2538
 JV2538.Click photographs - Photos may exist for this station.
 JV2538
 JV2538.The dynamic height is computed by dividing the NAVD 88
 JV2538.geopotential number by the normal gravity value computed on the
 JV2538.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2538.degrees latitude (g = 980.6199 gals.).
 JV2538
 JV2538.The modeled gravity was interpolated from observed gravity values.
 JV2538
 JV2538;                    North         East    Units  Estimated Accuracy
 JV2538;SPC MD       -   201,940.      369,390.      MT  (+/- 180 meters Scaled)
 JV2538
 JV2538_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ973732(NAD 83)
 JV2538
 JV2538                          SUPERSEDED SURVEY CONTROL
 JV2538
 JV2538  NGVD 29 (11/26/84)   89.962  (m)          295.15   (f) ADJUSTED    2 0
 JV2538
 JV2538.Superseded values are not recommended for survey control.
 JV2538
 JV2538.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2538.See file dsdata.pdf to determine how the superseded data were derived.
 JV2538
 JV2538
 JV2538  HISTORY     - Date     Condition        Report By
 JV2538  HISTORY     - UNK      MONUMENTED       PRR
 JV2538  HISTORY     - 1935     GOOD             CGS
 JV2538  HISTORY     - 20160601 MARK NOT FOUND   INDIV
 JV2538  HISTORY     - 20200115 MARK NOT FOUND   WTBALL
 JV2538
 JV2538                          STATION DESCRIPTION
 JV2538
 JV2538'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2538'AT WALKERSVILLE.
 JV2538'AT WALKERSVILLE, FREDERICK COUNTY, 69 FEET NORTHEAST OF THE
 JV2538'NORTHWEST CORNER OF THE PENNSYLVANIA RAILROAD STATION, 39 FEET
 JV2538'EAST OF THE CENTER LINE OF THE MAIN TRACK, AT THE SOUTH SIDE OF
 JV2538'PENNSYLVANIA AVENUE, AND ON THE TOP OF THE END OF THE CURBING.
 JV2538'A CHISELED SQUARE.
 JV2538
 JV2538                          STATION RECOVERY (2016)
 JV2538
 JV2538'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2016
 JV2538'MARK NOT FOUND.
 JV2538
 JV2538                          STATION RECOVERY (2020)
 JV2538
 JV2538'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV2538'A SEARCH WAS CONDUCTED AND THE MARK WAS NOT FOUND.  RECENT
 JV2538'CONSTRUCTION IN THE AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1809 ***********************************************************************
 JV1809  DESIGNATION -  CHISELED SQUARE 3
 JV1809  PID         -  JV1809
 JV1809  STATE/COUNTY-  MD/CARROLL
 JV1809  COUNTRY     -  US
 JV1809  USGS QUAD   -  MANCHESTER (2016)
 JV1809
 JV1809                         *CURRENT SURVEY CONTROL
 JV1809  ______________________________________________________________________
 JV1809* NAD 83(1986) POSITION- 39 39 40.6    (N) 076 53 05.9    (W)   HD_HELD2
 JV1809* NAVD 88 ORTHO HEIGHT -   301.932 (meters)      990.59  (feet) ADJUSTED
 JV1809  ______________________________________________________________________
 JV1809  GEOID HEIGHT    -        -32.313 (meters)                     GEOID18
 JV1809  DYNAMIC HEIGHT  -        301.778 (meters)      990.08  (feet) COMP
 JV1809  MODELED GRAVITY -    980,104.9   (mgal)                       NAVD 88
 JV1809
 JV1809  VERT ORDER      -  SECOND    CLASS II
 JV1809
 JV1809.The horizontal coordinates were established by autonomous hand held GPS
 JV1809.observations and have an estimated accuracy of +/- 10 meters.
 JV1809
 JV1809.The orthometric height was determined by differential leveling and
 JV1809.adjusted by the NATIONAL GEODETIC SURVEY
 JV1809.in June 1991.
 JV1809
 JV1809.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1809.GEOID18 height accuracy estimate available here.
 JV1809
 JV1809.Click photographs - Photos may exist for this station.
 JV1809
 JV1809.The dynamic height is computed by dividing the NAVD 88
 JV1809.geopotential number by the normal gravity value computed on the
 JV1809.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1809.degrees latitude (g = 980.6199 gals.).
 JV1809
 JV1809.The modeled gravity was interpolated from observed gravity values.
 JV1809
 JV1809;                    North         East    Units  Estimated Accuracy
 JV1809;SPC MD       -   221,428.      409,871.      MT  (+/- 10 meters HH2 GPS)
 JV1809
 JV1809_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3830191861(NAD 83)
 JV1809
 JV1809                          SUPERSEDED SURVEY CONTROL
 JV1809
 JV1809  NGVD 29 (11/26/84)  302.143  (m)          991.28   (f) ADJUSTED    2 0
 JV1809
 JV1809.Superseded values are not recommended for survey control.
 JV1809
 JV1809.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1809.See file dsdata.pdf to determine how the superseded data were derived.
 JV1809
 JV1809_MARKER: Q = CHISELED SQUARE
 JV1809_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1809_SP_SET: BUILDING
 JV1809_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1809_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1809+SATELLITE: SATELLITE OBSERVATIONS - January 31, 2008
 JV1809
 JV1809  HISTORY     - Date     Condition        Report By
 JV1809  HISTORY     - UNK      MONUMENTED       MDSRC
 JV1809  HISTORY     - 1967     GOOD             MDSRC
 JV1809  HISTORY     - 20040329 MARK NOT FOUND   NGS
 JV1809  HISTORY     - 20080131 GOOD             MDSHA
 JV1809
 JV1809                          STATION DESCRIPTION
 JV1809
 JV1809'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1809'AT MANCHESTER.
 JV1809'A CHISLED SQUARE ON THE SOUTHWEST CORNER OF A CONCRETE WINDOW
 JV1809'GRATE ON THE SOUTH SIDE OF THE CARROLL COUNTY TRUST COMPANY BANK
 JV1809'BUILDING AT THE INTERSECTION OF MARYLAND ROUTE 30 AND MARYLAND
 JV1809'ROUTE 31.  IT IS 34.4 FEET NORTH OF THE CENTERLINE OF MARYLAND
 JV1809'ROUTE 31 AND 17.2 FEET NORTH-NORTHEAST OF C AND P POWER POLE
 JV1809'NUMBER 390017.
 JV1809
 JV1809                          STATION RECOVERY (2004)
 JV1809
 JV1809'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2004 (DH)
 JV1809'MARK NOT FOUND.
 JV1809
 JV1809                          STATION RECOVERY (2008)
 JV1809
 JV1809'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV1809'THE MARK WAS RECOVERED IN GOOD CONDITION.
 JV1809'
 JV1809'NOTE-THE STATION IS A CHISELED SQUARE ON THE SOUTHWEST CORNER OF A
 JV1809'CONCRETE WINDOW GRATE ON THE SOUTH SIDE OF THE CARROLL COUNTY BANK AND
 JV1809'TRUST COMPANY, AT THE INTERSECTION OF WESTMINSTER STREET AND MAIN
 JV1809'STREET, IN MANCHESTER.
 JV1809'
 JV1809'IT IS 43.4 FT (13.2 M) NORTH OF THE CENTER OF WESTMINSTER STREET AND
 JV1809'17.2 FT (5.2 M) NORTH-NORTHEAST OF POWER POLE NUMBER 390017.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0924 ***********************************************************************
 HV0924  DESIGNATION -  CHISELED SQUARE USGS
 HV0924  PID         -  HV0924
 HV0924  STATE/COUNTY-  MD/CALVERT
 HV0924  COUNTRY     -  US
 HV0924  USGS QUAD   -  NORTH BEACH (2016)
 HV0924
 HV0924                         *CURRENT SURVEY CONTROL
 HV0924  ______________________________________________________________________
 HV0924* NAD 83(1986) POSITION- 38 40 09.     (N) 076 37 02.     (W)   SCALED
 HV0924* NAVD 88 ORTHO HEIGHT -    21.839 (meters)       71.65  (feet) ADJUSTED
 HV0924  ______________________________________________________________________
 HV0924  GEOID HEIGHT    -        -33.532 (meters)                     GEOID18
 HV0924  DYNAMIC HEIGHT  -         21.826 (meters)       71.61  (feet) COMP
 HV0924  MODELED GRAVITY -    980,048.0   (mgal)                       NAVD 88
 HV0924
 HV0924  VERT ORDER      -  FIRST     CLASS II
 HV0924
 HV0924.The horizontal coordinates were scaled from a map and have
 HV0924.an estimated accuracy of +/- 6 seconds.
 HV0924
 HV0924.The orthometric height was determined by differential leveling and
 HV0924.adjusted by the NATIONAL GEODETIC SURVEY
 HV0924.in June 1991.
 HV0924
 HV0924.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0924.GEOID18 height accuracy estimate available here.
 HV0924
 HV0924.Click photographs - Photos may exist for this station.
 HV0924
 HV0924.The dynamic height is computed by dividing the NAVD 88
 HV0924.geopotential number by the normal gravity value computed on the
 HV0924.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0924.degrees latitude (g = 980.6199 gals.).
 HV0924
 HV0924.The modeled gravity was interpolated from observed gravity values.
 HV0924
 HV0924;                    North         East    Units  Estimated Accuracy
 HV0924;SPC MD       -   111,350.      433,310.      MT  (+/- 180 meters Scaled)
 HV0924
 HV0924_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH593813(NAD 83)
 HV0924
 HV0924                          SUPERSEDED SURVEY CONTROL
 HV0924
 HV0924  NGVD 29 (11/26/84)   22.131  (m)           72.61   (f) ADJUSTED    1 2
 HV0924
 HV0924.Superseded values are not recommended for survey control.
 HV0924
 HV0924.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0924.See file dsdata.pdf to determine how the superseded data were derived.
 HV0924
 HV0924_MARKER: Q = CHISELED SQUARE
 HV0924_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0924_SP_SET: BRIDGE
 HV0924_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0924
 HV0924  HISTORY     - Date     Condition        Report By
 HV0924  HISTORY     - UNK      MONUMENTED       USGS
 HV0924  HISTORY     - 1933     GOOD             CGS
 HV0924  HISTORY     - 1945     GOOD             CGS
 HV0924  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV0924  HISTORY     - 20130106 MARK NOT FOUND   GEOCAC
 HV0924
 HV0924                          STATION DESCRIPTION
 HV0924
 HV0924'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV0924'1.9 MI S FROM CHANEYVILLE.
 HV0924'1.9 MILES SOUTH ALONG STATE HIGHWAY 416 FROM THE SCHOOLHOUSE
 HV0924'AT CHANEYVILLE, CALVERT COUNTY, AT A CONCRETE BRIDGE, AND ON
 HV0924'THE TOP OF THE SOUTH WING WALL OF THE WEST ABUTMENT.  A
 HV0924'CHISELED SQUARE.
 HV0924
 HV0924                          STATION RECOVERY (1945)
 HV0924
 HV0924'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945
 HV0924'RECOVERED IN GOOD CONDITION.
 HV0924
 HV0924                          STATION RECOVERY (2001)
 HV0924
 HV0924'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0924'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0924
 HV0924                          STATION RECOVERY (2013)
 HV0924
 HV0924'RECOVERY NOTE BY GEOCACHING 2013 (EP)
 HV0924'IN 2013, HIGHWAY 416 NO LONGER EXISTS, HAVING BEEN REPLACED BY HIGHWAY
 HV0924'4. THE REGRADING AND REBUILDING OF THE ROADWAY ELIMINATED THE BRIDGE
 HV0924'AND THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0922 ***********************************************************************
 HV0922  DESIGNATION -  CHISELED SQUARE USGS
 HV0922  PID         -  HV0922
 HV0922  STATE/COUNTY-  MD/CALVERT
 HV0922  COUNTRY     -  US
 HV0922  USGS QUAD   -  LOWER MARLBORO (2016)
 HV0922
 HV0922                         *CURRENT SURVEY CONTROL
 HV0922  ______________________________________________________________________
 HV0922* NAD 83(1986) POSITION- 38 40 43.     (N) 076 37 43.     (W)   SCALED
 HV0922* NAVD 88 ORTHO HEIGHT -    35.531 (meters)      116.57  (feet) ADJUSTED
 HV0922  ______________________________________________________________________
 HV0922  GEOID HEIGHT    -        -33.493 (meters)                     GEOID18
 HV0922  DYNAMIC HEIGHT  -         35.510 (meters)      116.50  (feet) COMP
 HV0922  MODELED GRAVITY -    980,048.7   (mgal)                       NAVD 88
 HV0922
 HV0922  VERT ORDER      -  FIRST     CLASS II
 HV0922
 HV0922.The horizontal coordinates were scaled from a map and have
 HV0922.an estimated accuracy of +/- 6 seconds.
 HV0922
 HV0922.The orthometric height was determined by differential leveling and
 HV0922.adjusted by the NATIONAL GEODETIC SURVEY
 HV0922.in June 1991.
 HV0922
 HV0922.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0922.GEOID18 height accuracy estimate available here.
 HV0922
 HV0922.Click photographs - Photos may exist for this station.
 HV0922
 HV0922.The dynamic height is computed by dividing the NAVD 88
 HV0922.geopotential number by the normal gravity value computed on the
 HV0922.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0922.degrees latitude (g = 980.6199 gals.).
 HV0922
 HV0922.The modeled gravity was interpolated from observed gravity values.
 HV0922
 HV0922;                    North         East    Units  Estimated Accuracy
 HV0922;SPC MD       -   112,400.      432,320.      MT  (+/- 180 meters Scaled)
 HV0922
 HV0922_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH583823(NAD 83)
 HV0922
 HV0922                          SUPERSEDED SURVEY CONTROL
 HV0922
 HV0922  NGVD 29 (11/26/84)   35.822  (m)          117.53   (f) ADJUSTED    1 2
 HV0922
 HV0922.Superseded values are not recommended for survey control.
 HV0922
 HV0922.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0922.See file dsdata.pdf to determine how the superseded data were derived.
 HV0922
 HV0922_MARKER: Q = CHISELED SQUARE
 HV0922_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0922_SP_SET: CULVERT
 HV0922_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0922
 HV0922  HISTORY     - Date     Condition        Report By
 HV0922  HISTORY     - UNK      MONUMENTED       USGS
 HV0922  HISTORY     - 1933     GOOD             CGS
 HV0922  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV0922  HISTORY     - 20130106 MARK NOT FOUND   GEOCAC
 HV0922
 HV0922                          STATION DESCRIPTION
 HV0922
 HV0922'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV0922'1 MI S FROM CHANEYVILLE.
 HV0922'1.0 MILE SOUTH ALONG STATE HIGHWAY 416 FROM THE SCHOOLHOUSE
 HV0922'AT CHANEYVILLE, CALVERT COUNTY, AT A CONCRETE CULVERT, AND ON THE
 HV0922'TOP OF THE WEST HEAD WALL.  A CHISELED SQUARE.
 HV0922
 HV0922                          STATION RECOVERY (2001)
 HV0922
 HV0922'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0922'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0922
 HV0922                          STATION RECOVERY (2013)
 HV0922
 HV0922'RECOVERY NOTE BY GEOCACHING 2013 (EP)
 HV0922'IN 2013, HIGHWAY 416 NO LONGER EXISTS, HAVING BEEN REPLACED BY HIGHWAY
 HV0922'4. THE REGRADING AND REBUILDING OF THE ROADWAY ELIMINATED THE CULVERT
 HV0922'AND THE MARK AND REDIRECTED THE ROADWAY.  THE LISTED LOCATION IS NOW
 HV0922'ABOUT 200 FEET EAST OF THE ROADWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0918 ***********************************************************************
 HV0918  DESIGNATION -  CHISELED SQUARE USGS
 HV0918  PID         -  HV0918
 HV0918  STATE/COUNTY-  MD/CALVERT
 HV0918  COUNTRY     -  US
 HV0918  USGS QUAD   -  LOWER MARLBORO (2016)
 HV0918
 HV0918                         *CURRENT SURVEY CONTROL
 HV0918  ______________________________________________________________________
 HV0918* NAD 83(1986) POSITION- 38 42 33.     (N) 076 39 06.     (W)   SCALED
 HV0918* NAVD 88 ORTHO HEIGHT -     4.929 (meters)       16.17  (feet) ADJUSTED
 HV0918  ______________________________________________________________________
 HV0918  GEOID HEIGHT    -        -33.398 (meters)                     GEOID18
 HV0918  DYNAMIC HEIGHT  -          4.926 (meters)       16.16  (feet) COMP
 HV0918  MODELED GRAVITY -    980,049.4   (mgal)                       NAVD 88
 HV0918
 HV0918  VERT ORDER      -  FIRST     CLASS II
 HV0918
 HV0918.The horizontal coordinates were scaled from a map and have
 HV0918.an estimated accuracy of +/- 6 seconds.
 HV0918
 HV0918.The orthometric height was determined by differential leveling and
 HV0918.adjusted by the NATIONAL GEODETIC SURVEY
 HV0918.in June 1991.
 HV0918
 HV0918.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0918.GEOID18 height accuracy estimate available here.
 HV0918
 HV0918.Click photographs - Photos may exist for this station.
 HV0918
 HV0918.The dynamic height is computed by dividing the NAVD 88
 HV0918.geopotential number by the normal gravity value computed on the
 HV0918.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0918.degrees latitude (g = 980.6199 gals.).
 HV0918
 HV0918.The modeled gravity was interpolated from observed gravity values.
 HV0918
 HV0918;                    North         East    Units  Estimated Accuracy
 HV0918;SPC MD       -   115,780.      430,300.      MT  (+/- 180 meters Scaled)
 HV0918
 HV0918_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH563857(NAD 83)
 HV0918
 HV0918                          SUPERSEDED SURVEY CONTROL
 HV0918
 HV0918  NGVD 29 (11/26/84)    5.222  (m)           17.13   (f) ADJUSTED    1 2
 HV0918
 HV0918.Superseded values are not recommended for survey control.
 HV0918
 HV0918.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0918.See file dsdata.pdf to determine how the superseded data were derived.
 HV0918
 HV0918_MARKER: Q = CHISELED SQUARE
 HV0918_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0918_SP_SET: BRIDGE
 HV0918_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0918
 HV0918  HISTORY     - Date     Condition        Report By
 HV0918  HISTORY     - UNK      MONUMENTED       USGS
 HV0918  HISTORY     - 1933     GOOD             CGS
 HV0918  HISTORY     - 1945     GOOD             CGS
 HV0918  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV0918
 HV0918                          STATION DESCRIPTION
 HV0918
 HV0918'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV0918'1 MI S FROM DUNKIRK.
 HV0918'1.0 MILE SOUTH ALONG STATE HIGHWAY 416 FROM THE ROAD JUNCTION
 HV0918'AT DUNKIRK, CALVERT COUNTY, AT A CONCRETE BRIDGE OVER HALL
 HV0918'CREEK, AND ON THE TOP OF THE EAST WING WALL OF THE NORTH
 HV0918'ABUTMENT.  A CHISELED SQUARE.
 HV0918
 HV0918                          STATION RECOVERY (1945)
 HV0918
 HV0918'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945
 HV0918'RECOVERED IN GOOD CONDITION.
 HV0918
 HV0918                          STATION RECOVERY (2001)
 HV0918
 HV0918'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0918'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0944 ***********************************************************************
 HV0944  DESIGNATION -  CHISELED SQUARE USGS
 HV0944  PID         -  HV0944
 HV0944  STATE/COUNTY-  MD/CALVERT
 HV0944  COUNTRY     -  US
 HV0944  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0944
 HV0944                         *CURRENT SURVEY CONTROL
 HV0944  ______________________________________________________________________
 HV0944* NAD 83(1986) POSITION- 38 33 25.     (N) 076 35 51.     (W)   SCALED
 HV0944* NAVD 88 ORTHO HEIGHT -    42.611 (meters)      139.80  (feet) ADJUSTED
 HV0944  ______________________________________________________________________
 HV0944  GEOID HEIGHT    -        -33.787 (meters)                     GEOID18
 HV0944  DYNAMIC HEIGHT  -         42.585 (meters)      139.71  (feet) COMP
 HV0944  MODELED GRAVITY -    980,032.5   (mgal)                       NAVD 88
 HV0944
 HV0944  VERT ORDER      -  FIRST     CLASS II
 HV0944
 HV0944.The horizontal coordinates were scaled from a map and have
 HV0944.an estimated accuracy of +/- 6 seconds.
 HV0944
 HV0944.The orthometric height was determined by differential leveling and
 HV0944.adjusted by the NATIONAL GEODETIC SURVEY
 HV0944.in June 1991.
 HV0944
 HV0944.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0944.GEOID18 height accuracy estimate available here.
 HV0944
 HV0944.Click photographs - Photos may exist for this station.
 HV0944
 HV0944.The dynamic height is computed by dividing the NAVD 88
 HV0944.geopotential number by the normal gravity value computed on the
 HV0944.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0944.degrees latitude (g = 980.6199 gals.).
 HV0944
 HV0944.The modeled gravity was interpolated from observed gravity values.
 HV0944
 HV0944;                    North         East    Units  Estimated Accuracy
 HV0944;SPC MD       -    98,900.      435,080.      MT  (+/- 180 meters Scaled)
 HV0944
 HV0944_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH608688(NAD 83)
 HV0944
 HV0944                          SUPERSEDED SURVEY CONTROL
 HV0944
 HV0944  NGVD 29 (11/26/84)   42.899  (m)          140.74   (f) ADJUSTED    1 2
 HV0944
 HV0944.Superseded values are not recommended for survey control.
 HV0944
 HV0944.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0944.See file dsdata.pdf to determine how the superseded data were derived.
 HV0944
 HV0944_MARKER: Q = CHISELED SQUARE
 HV0944_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0944_SP_SET: CULVERT
 HV0944_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0944
 HV0944  HISTORY     - Date     Condition        Report By
 HV0944  HISTORY     - UNK      MONUMENTED       USGS
 HV0944  HISTORY     - 1933     GOOD             CGS
 HV0944  HISTORY     - 1971     MARK NOT FOUND   USGS
 HV0944
 HV0944                          STATION DESCRIPTION
 HV0944
 HV0944'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV0944'1.7 MI N FROM PRINCE FREDERICK.
 HV0944'1.7 MILES NORTH ALONG OLD STATE HIGHWAY 2 FROM THE COUNTY COURTHOUSE
 HV0944'AT PRINCE FGREDERICK, CALVERT COUNTY, AT A CONCRETE CULVERT,
 HV0944'AND ON THE TOP OF THE WEST HEAD WALL.  A CHISELED SQUARE.
 HV0944
 HV0944                          STATION RECOVERY (1971)
 HV0944
 HV0944'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1971
 HV0944'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0914 ***********************************************************************
 HV0914  DESIGNATION -  CHISELED SQUARE USGS
 HV0914  PID         -  HV0914
 HV0914  STATE/COUNTY-  MD/CALVERT
 HV0914  COUNTRY     -  US
 HV0914  USGS QUAD   -  LOWER MARLBORO (2016)
 HV0914
 HV0914                         *CURRENT SURVEY CONTROL
 HV0914  ______________________________________________________________________
 HV0914* NAD 83(1986) POSITION- 38 44 57.     (N) 076 39 43.     (W)   SCALED
 HV0914* NAVD 88 ORTHO HEIGHT -    14.501 (meters)       47.58  (feet) ADJUSTED
 HV0914  ______________________________________________________________________
 HV0914  GEOID HEIGHT    -        -33.309 (meters)                     GEOID18
 HV0914  DYNAMIC HEIGHT  -         14.492 (meters)       47.55  (feet) COMP
 HV0914  MODELED GRAVITY -    980,049.9   (mgal)                       NAVD 88
 HV0914
 HV0914  VERT ORDER      -  FIRST     CLASS II
 HV0914
 HV0914.The horizontal coordinates were scaled from a map and have
 HV0914.an estimated accuracy of +/- 6 seconds.
 HV0914
 HV0914.The orthometric height was determined by differential leveling and
 HV0914.adjusted by the NATIONAL GEODETIC SURVEY
 HV0914.in June 1991.
 HV0914
 HV0914.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0914.GEOID18 height accuracy estimate available here.
 HV0914
 HV0914.Click photographs - Photos may exist for this station.
 HV0914
 HV0914.The dynamic height is computed by dividing the NAVD 88
 HV0914.geopotential number by the normal gravity value computed on the
 HV0914.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0914.degrees latitude (g = 980.6199 gals.).
 HV0914
 HV0914.The modeled gravity was interpolated from observed gravity values.
 HV0914
 HV0914;                    North         East    Units  Estimated Accuracy
 HV0914;SPC MD       -   120,220.      429,390.      MT  (+/- 180 meters Scaled)
 HV0914
 HV0914_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH555902(NAD 83)
 HV0914
 HV0914                          SUPERSEDED SURVEY CONTROL
 HV0914
 HV0914  NGVD 29 (11/26/84)   14.795  (m)           48.54   (f) ADJUSTED    1 2
 HV0914
 HV0914.Superseded values are not recommended for survey control.
 HV0914
 HV0914.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0914.See file dsdata.pdf to determine how the superseded data were derived.
 HV0914
 HV0914_MARKER: Q = CHISELED SQUARE
 HV0914_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0914_SP_SET: BRIDGE
 HV0914_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0914
 HV0914  HISTORY     - Date     Condition        Report By
 HV0914  HISTORY     - UNK      MONUMENTED       USGS
 HV0914  HISTORY     - 1933     GOOD             CGS
 HV0914  HISTORY     - 1945     GOOD             CGS
 HV0914  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV0914
 HV0914                          STATION DESCRIPTION
 HV0914
 HV0914'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV0914'3.2 MI S FROM BRISTOL.
 HV0914'IN CALVERT COUNTY, 3.2 MILES SOUTH ALONG STATE HIGHWAY 416 FROM
 HV0914'THE ROAD JUNCTION AT BRISTOL, ANNE ARUNDEL COUNTY, 1.9 MILES
 HV0914'NORTH OF DUNKIRK, AT A CONCRETE BRIDGE, AND ON THE TOP OF THE EAST
 HV0914'END OF THE NORTH ABUTMENT.  A CHISELED SQUARE.
 HV0914
 HV0914                          STATION RECOVERY (1945)
 HV0914
 HV0914'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945
 HV0914'RECOVERED IN GOOD CONDITION.
 HV0914
 HV0914                          STATION RECOVERY (2001)
 HV0914
 HV0914'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0914'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0730 ***********************************************************************
 HV0730  DESIGNATION -  CHISELED SQUARE USGS
 HV0730  PID         -  HV0730
 HV0730  STATE/COUNTY-  MD/CALVERT
 HV0730  COUNTRY     -  US
 HV0730  USGS QUAD   -  BROOMES ISLAND (2016)
 HV0730
 HV0730                         *CURRENT SURVEY CONTROL
 HV0730  ______________________________________________________________________
 HV0730* NAD 83(1986) POSITION- 38 27 35.     (N) 076 32 34.     (W)   SCALED
 HV0730* NAVD 88 ORTHO HEIGHT -    43.020 (meters)      141.14  (feet) ADJUSTED
 HV0730  ______________________________________________________________________
 HV0730  GEOID HEIGHT    -        -34.069 (meters)                     GEOID18
 HV0730  DYNAMIC HEIGHT  -         42.993 (meters)      141.05  (feet) COMP
 HV0730  MODELED GRAVITY -    980,014.4   (mgal)                       NAVD 88
 HV0730
 HV0730  VERT ORDER      -  FIRST     CLASS II
 HV0730
 HV0730.The horizontal coordinates were scaled from a map and have
 HV0730.an estimated accuracy of +/- 6 seconds.
 HV0730
 HV0730.The orthometric height was determined by differential leveling and
 HV0730.adjusted by the NATIONAL GEODETIC SURVEY
 HV0730.in June 1991.
 HV0730
 HV0730.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0730.GEOID18 height accuracy estimate available here.
 HV0730
 HV0730.Click photographs - Photos may exist for this station.
 HV0730
 HV0730.The dynamic height is computed by dividing the NAVD 88
 HV0730.geopotential number by the normal gravity value computed on the
 HV0730.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0730.degrees latitude (g = 980.6199 gals.).
 HV0730
 HV0730.The modeled gravity was interpolated from observed gravity values.
 HV0730
 HV0730;                    North         East    Units  Estimated Accuracy
 HV0730;SPC MD       -    88,130.      439,910.      MT  (+/- 180 meters Scaled)
 HV0730
 HV0730_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH653579(NAD 83)
 HV0730
 HV0730                          SUPERSEDED SURVEY CONTROL
 HV0730
 HV0730  NGVD 29 (11/26/84)   43.309  (m)          142.09   (f) ADJUSTED    1 2
 HV0730
 HV0730.Superseded values are not recommended for survey control.
 HV0730
 HV0730.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0730.See file dsdata.pdf to determine how the superseded data were derived.
 HV0730
 HV0730_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION
 HV0730_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0730_SP_SET: CULVERT
 HV0730_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0730
 HV0730  HISTORY     - Date     Condition        Report By
 HV0730  HISTORY     - UNK      MONUMENTED       USGS
 HV0730  HISTORY     - 1941     GOOD             CGS
 HV0730  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 HV0730
 HV0730                          STATION DESCRIPTION
 HV0730
 HV0730'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0730'3.6 MI SE FROM PRINCE FREDERICK.
 HV0730'3.6 MILES SOUTHEAST ALONG STATE HIGHWAY 2 FROM THE POST OFFICE
 HV0730'AT PRINCE FREDERICK, CALVERT COUNTY, THENCE 2.1 MILES SOUTH ALONG
 HV0730'THE ROAD LEADING TO BROOMES ISLAND, AND THENCE 0.9 MILE SOUTHEAST
 HV0730'ALONG THE ROAD LEADING TO WALLVILLE, 250 FEET NORTHWEST OF A
 HV0730'CHURCH, 17 FEET SOUTHEAST OF THE CENTER LINE OF A PRIVATE ROAD
 HV0730'LEADING SOUTHWEST, AT AN 18-INCH CONCRETE CULVERT, ON THE
 HV0730'CENTER OF THE TOP OF THE SOUTHWEST HEAD WALL, AND 12.7 FEET
 HV0730'SOUTHWEST OF THE CENTER LINE OF THE WALLVILLE ROAD.  A CHISELED
 HV0730'SQUARE.
 HV0730
 HV0730                          STATION RECOVERY (1990)
 HV0730
 HV0730'RECOVERY NOTE BY US POWER SQUADRON 1990 (JGM)
 HV0730'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0932 ***********************************************************************
 HV0932  DESIGNATION -  CHISELED SQUARE USGS
 HV0932  PID         -  HV0932
 HV0932  STATE/COUNTY-  MD/CALVERT
 HV0932  COUNTRY     -  US
 HV0932  USGS QUAD   -  NORTH BEACH (2016)
 HV0932
 HV0932                         *CURRENT SURVEY CONTROL
 HV0932  ______________________________________________________________________
 HV0932* NAD 83(1986) POSITION- 38 37 32.     (N) 076 36 29.     (W)   SCALED
 HV0932* NAVD 88 ORTHO HEIGHT -    47.981 (meters)      157.42  (feet) ADJUSTED
 HV0932  ______________________________________________________________________
 HV0932  GEOID HEIGHT    -        -33.630 (meters)                     GEOID18
 HV0932  DYNAMIC HEIGHT  -         47.952 (meters)      157.32  (feet) COMP
 HV0932  MODELED GRAVITY -    980,042.7   (mgal)                       NAVD 88
 HV0932
 HV0932  VERT ORDER      -  FIRST     CLASS II
 HV0932
 HV0932.The horizontal coordinates were scaled from a map and have
 HV0932.an estimated accuracy of +/- 6 seconds.
 HV0932
 HV0932.The orthometric height was determined by differential leveling and
 HV0932.adjusted by the NATIONAL GEODETIC SURVEY
 HV0932.in June 1991.
 HV0932
 HV0932.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0932.GEOID18 height accuracy estimate available here.
 HV0932
 HV0932.Click photographs - Photos may exist for this station.
 HV0932
 HV0932.The dynamic height is computed by dividing the NAVD 88
 HV0932.geopotential number by the normal gravity value computed on the
 HV0932.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0932.degrees latitude (g = 980.6199 gals.).
 HV0932
 HV0932.The modeled gravity was interpolated from observed gravity values.
 HV0932
 HV0932;                    North         East    Units  Estimated Accuracy
 HV0932;SPC MD       -   106,510.      434,130.      MT  (+/- 180 meters Scaled)
 HV0932
 HV0932_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH600764(NAD 83)
 HV0932
 HV0932                          SUPERSEDED SURVEY CONTROL
 HV0932
 HV0932  NGVD 29 (11/26/84)   48.270  (m)          158.37   (f) ADJUSTED    1 2
 HV0932
 HV0932.Superseded values are not recommended for survey control.
 HV0932
 HV0932.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0932.See file dsdata.pdf to determine how the superseded data were derived.
 HV0932
 HV0932_MARKER: Q = CHISELED SQUARE
 HV0932_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0932_SP_SET: CULVERT
 HV0932_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0932
 HV0932  HISTORY     - Date     Condition        Report By
 HV0932  HISTORY     - UNK      MONUMENTED       USGS
 HV0932  HISTORY     - 1933     GOOD             CGS
 HV0932  HISTORY     - 20130106 MARK NOT FOUND   GEOCAC
 HV0932
 HV0932                          STATION DESCRIPTION
 HV0932
 HV0932'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV0932'0.5 MI N FROM HUNTINGTOWN.
 HV0932'0.5 MILE NORTH ALONG STATE HIGHWAY 2 FROM THE SCHOOLHOUSE AT
 HV0932'HUNTINGTOWN, CALVERT COUNTY, AT A CONCRETE CULVERT, AND ON
 HV0932'THE TOP OF THE WEST HEAD WALL.  A CHISELED SQUARE.
 HV0932
 HV0932                          STATION RECOVERY (2013)
 HV0932
 HV0932'RECOVERY NOTE BY GEOCACHING 2013 (EP)
 HV0932'HIGHWAY 2 HAS BEEN REBUILT AND THE PRESENT ROADWAY IS NOW HIGHWAYS 2
 HV0932'AND 4 AND THE LOCATION OF THE MARK IS ABOUT 200 FEET SE OF ROADWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0930 ***********************************************************************
 HV0930  DESIGNATION -  CHISELED SQUARE USGS
 HV0930  PID         -  HV0930
 HV0930  STATE/COUNTY-  MD/CALVERT
 HV0930  COUNTRY     -  US
 HV0930  USGS QUAD   -  NORTH BEACH (2016)
 HV0930
 HV0930                         *CURRENT SURVEY CONTROL
 HV0930  ______________________________________________________________________
 HV0930* NAD 83(1986) POSITION- 38 38 39.     (N) 076 36 20.     (W)   SCALED
 HV0930* NAVD 88 ORTHO HEIGHT -    43.685 (meters)      143.32  (feet) ADJUSTED
 HV0930  ______________________________________________________________________
 HV0930  GEOID HEIGHT    -        -33.601 (meters)                     GEOID18
 HV0930  DYNAMIC HEIGHT  -         43.659 (meters)      143.24  (feet) COMP
 HV0930  MODELED GRAVITY -    980,045.3   (mgal)                       NAVD 88
 HV0930
 HV0930  VERT ORDER      -  FIRST     CLASS II
 HV0930
 HV0930.The horizontal coordinates were scaled from a map and have
 HV0930.an estimated accuracy of +/- 6 seconds.
 HV0930
 HV0930.The orthometric height was determined by differential leveling and
 HV0930.adjusted by the NATIONAL GEODETIC SURVEY
 HV0930.in June 1991.
 HV0930
 HV0930.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0930.GEOID18 height accuracy estimate available here.
 HV0930
 HV0930.Click photographs - Photos may exist for this station.
 HV0930
 HV0930.The dynamic height is computed by dividing the NAVD 88
 HV0930.geopotential number by the normal gravity value computed on the
 HV0930.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0930.degrees latitude (g = 980.6199 gals.).
 HV0930
 HV0930.The modeled gravity was interpolated from observed gravity values.
 HV0930
 HV0930;                    North         East    Units  Estimated Accuracy
 HV0930;SPC MD       -   108,580.      434,340.      MT  (+/- 180 meters Scaled)
 HV0930
 HV0930_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH602785(NAD 83)
 HV0930
 HV0930                          SUPERSEDED SURVEY CONTROL
 HV0930
 HV0930  NGVD 29 (11/26/84)   43.975  (m)          144.27   (f) ADJUSTED    1 2
 HV0930
 HV0930.Superseded values are not recommended for survey control.
 HV0930
 HV0930.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0930.See file dsdata.pdf to determine how the superseded data were derived.
 HV0930
 HV0930_MARKER: Q = CHISELED SQUARE
 HV0930_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0930_SP_SET: CULVERT
 HV0930_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0930
 HV0930  HISTORY     - Date     Condition        Report By
 HV0930  HISTORY     - UNK      MONUMENTED       USGS
 HV0930  HISTORY     - 1933     GOOD             CGS
 HV0930  HISTORY     - 1945     GOOD             CGS
 HV0930  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV0930  HISTORY     - 20130106 MARK NOT FOUND   GEOCAC
 HV0930
 HV0930                          STATION DESCRIPTION
 HV0930
 HV0930'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV0930'1.2 MI S FROM SUNDERLAND.
 HV0930'1.2 MILES SOUTH ALONG STATE HIGHWAY 2 FROM THE ROAD INTERSECTION
 HV0930'AT SUNDERLAND, CALVERT COUNTY, AT A CONCRETE CULVERT, AND ON
 HV0930'THE TOP OF THE EAST HEAD WALL.  A CHISELED SQUARE.
 HV0930
 HV0930                          STATION RECOVERY (1945)
 HV0930
 HV0930'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945
 HV0930'RECOVERED IN GOOD CONDITION.
 HV0930
 HV0930                          STATION RECOVERY (2001)
 HV0930
 HV0930'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0930'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0930
 HV0930                          STATION RECOVERY (2013)
 HV0930
 HV0930'RECOVERY NOTE BY GEOCACHING 2013 (EP)
 HV0930'HIGHWAY 416 WAS REBUILT AS HIGHWAY 4 AND THE ROUTE MOVED WEST AT THIS
 HV0930'LOCATION. MARK IS NOW ABOUT 200 EAST OF THE ROADWAY
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0520 ***********************************************************************
 HU0520  DESIGNATION -  CHISELED SQUARE USGS
 HU0520  PID         -  HU0520
 HU0520  STATE/COUNTY-  MD/WORCESTER
 HU0520  COUNTRY     -  US
 HU0520  USGS QUAD   -  POCOMOKE CITY (2016)
 HU0520
 HU0520                         *CURRENT SURVEY CONTROL
 HU0520  ______________________________________________________________________
 HU0520* NAD 83(1986) POSITION- 38 00 33.     (N) 075 32 50.     (W)   SCALED
 HU0520* NAVD 88 ORTHO HEIGHT -     2.405 (meters)        7.89  (feet) ADJUSTED
 HU0520  ______________________________________________________________________
 HU0520  GEOID HEIGHT    -        -36.372 (meters)                     GEOID18
 HU0520  DYNAMIC HEIGHT  -          2.403 (meters)        7.88  (feet) COMP
 HU0520  MODELED GRAVITY -    979,967.0   (mgal)                       NAVD 88
 HU0520
 HU0520  VERT ORDER      -  FIRST     CLASS I
 HU0520
 HU0520.The horizontal coordinates were scaled from a map and have
 HU0520.an estimated accuracy of +/- 6 seconds.
 HU0520
 HU0520.The orthometric height was determined by differential leveling and
 HU0520.adjusted by the NATIONAL GEODETIC SURVEY
 HU0520.in June 1991.
 HU0520
 HU0520.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0520.GEOID18 height accuracy estimate available here.
 HU0520
 HU0520.Click photographs - Photos may exist for this station.
 HU0520
 HU0520.The dynamic height is computed by dividing the NAVD 88
 HU0520.geopotential number by the normal gravity value computed on the
 HU0520.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0520.degrees latitude (g = 980.6199 gals.).
 HU0520
 HU0520.The modeled gravity was interpolated from observed gravity values.
 HU0520
 HU0520;                    North         East    Units  Estimated Accuracy
 HU0520;SPC MD       -    39,040.      527,590.      MT  (+/- 180 meters Scaled)
 HU0520
 HU0520_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH519069(NAD 83)
 HU0520
 HU0520                          SUPERSEDED SURVEY CONTROL
 HU0520
 HU0520  NGVD 29 (11/26/84)    2.655  (m)            8.71   (f) ADJUSTED    1 1
 HU0520
 HU0520.Superseded values are not recommended for survey control.
 HU0520
 HU0520.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0520.See file dsdata.pdf to determine how the superseded data were derived.
 HU0520
 HU0520_MARKER: Q = CHISELED SQUARE
 HU0520_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HU0520_SP_SET: CULVERT
 HU0520_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0520
 HU0520  HISTORY     - Date     Condition        Report By
 HU0520  HISTORY     - UNK      MONUMENTED       USGS
 HU0520  HISTORY     - 1972     POOR             NGS
 HU0520
 HU0520                          STATION DESCRIPTION
 HU0520
 HU0520'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0520'4.6 MI S FROM POCOMOKE CITY.
 HU0520'ABOUT 4.6 MILES SOUTH ALONG THE PENN CENTRAL RAILROAD FROM THE
 HU0520'CROSSING OF CLARKE AVENUE AT POCOMOKE CITY, 0.2 MILE SOUTH OF
 HU0520'MILEPOST 35, SET ON THE TOP OF THE NORTH END OF A 29-FOOT LONE WEST
 HU0520'HEADWALL FOR 5 3-INCH PIPE CULVERTS UNDER THE TRACK FOR WAGRAM
 HU0520'CREEK, 30 FEET WEST OF THE WEST RAIL, 5 FEET BELOW THE LEVEL OF
 HU0520'THE TRACK.  NOTE-- THERE IS A 3 INCH CRACK IN THE HEADWALL 10 1/2
 HU0520'FEET SOUTH OF THE CHISELED SQUARE.  IT APPEARS AS THOUGH THE NORTH
 HU0520'END OF THE HEADWALL HAS DROPPED SOME FROM ITS ORIGINAL POSITION.
 HU0520'MARK SHOULD BE USED WITH CAUTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8273 ***********************************************************************
 HV8273  DESIGNATION -  CHOPTANK BRIDGE
 HV8273  PID         -  HV8273
 HV8273  STATE/COUNTY-  MD/DORCHESTER
 HV8273  COUNTRY     -  US
 HV8273  USGS QUAD   -  CAMBRIDGE (2016)
 HV8273
 HV8273                         *CURRENT SURVEY CONTROL
 HV8273  ______________________________________________________________________
 HV8273* NAD 83(1991) POSITION- 38 34 43.72962(N) 076 03 27.24324(W)   ADJUSTED
 HV8273* NAVD 88 ORTHO HEIGHT -    19.656 (meters)       64.49  (feet) ADJUSTED
 HV8273  ______________________________________________________________________
 HV8273  GEOID HEIGHT    -        -35.051 (meters)                     GEOID18
 HV8273  LAPLACE CORR    -         -3.35  (seconds)                    DEFLEC18
 HV8273  DYNAMIC HEIGHT  -         19.644 (meters)       64.45  (feet) COMP
 HV8273  MODELED GRAVITY -    980,018.3   (mgal)                       NAVD 88
 HV8273
 HV8273  HORZ ORDER      -  SECOND
 HV8273  VERT ORDER      -  SECOND    CLASS I
 HV8273
 HV8273.The horizontal coordinates were established by classical geodetic methods
 HV8273.and adjusted by the National Geodetic Survey in January 1992.
 HV8273
 HV8273.The orthometric height was determined by differential leveling and
 HV8273.adjusted by the NATIONAL GEODETIC SURVEY
 HV8273.in October 1997.
 HV8273
 HV8273.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8273.GEOID18 height accuracy estimate available here.
 HV8273
 HV8273.Click photographs - Photos may exist for this station.
 HV8273
 HV8273.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8273
 HV8273.The dynamic height is computed by dividing the NAVD 88
 HV8273.geopotential number by the normal gravity value computed on the
 HV8273.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8273.degrees latitude (g = 980.6199 gals.).
 HV8273
 HV8273.The modeled gravity was interpolated from observed gravity values.
 HV8273
 HV8273. The following values were computed from the NAD 83(1991) position.
 HV8273
 HV8273;                    North         East     Units Scale Factor Converg.
 HV8273;SPC MD       -   101,675.773   482,116.847   MT  0.99996321   +0 35 29.4
 HV8273;SPC MD       -   333,581.27  1,581,745.02   sFT  0.99996321   +0 35 29.4
 HV8273;UTM  18      - 4,270,568.972   407,881.756   MT  0.99970450   -0 39 34.3
 HV8273
 HV8273!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8273!SPC MD       -   1.00000242  x   0.99996321  =   0.99996563
 HV8273!UTM  18      -   1.00000242  x   0.99970450  =   0.99970691
 HV8273
 HV8273_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0788170568(NAD 83)
 HV8273
 HV8273|---------------------------------------------------------------------|
 HV8273| PID    Reference Object                     Distance      Geod. Az  |
 HV8273|                                                           dddmmss.s |
 HV8273| HV8274 CHOPTANK BRIDGE RM 1                 15.165 METERS 07620     |
 HV8273| HV8275 CHOPTANK BRIDGE RM 2                 15.027 METERS 34612     |
 HV8273|---------------------------------------------------------------------|
 HV8273
 HV8273                          SUPERSEDED SURVEY CONTROL
 HV8273
 HV8273  NAD 83(1986)-  38 34 43.72609(N)    076 03 27.26027(W) AD(       ) 2
 HV8273  NGVD 29              19.89   (m)           65.3    (f) LEVELING    3  
 HV8273
 HV8273.Superseded values are not recommended for survey control.
 HV8273
 HV8273.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8273.See file dsdata.pdf to determine how the superseded data were derived.
 HV8273
 HV8273_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8273_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV8273_SP_SET: BARRIER WALL
 HV8273_STAMPING: CHOPTANK BRIDGE 1986
 HV8273_MARK LOGO: NGS
 HV8273_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8273_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8273_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8273+SATELLITE: SATELLITE OBSERVATIONS - January 01, 1987
 HV8273
 HV8273  HISTORY     - Date     Condition        Report By
 HV8273  HISTORY     - 1986     MONUMENTED       NGS
 HV8273  HISTORY     - 19870101 GOOD             NGS
 HV8273
 HV8273                          STATION DESCRIPTION
 HV8273
 HV8273'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HV8273'THE STATION IS LOCATED ABOUT 1.9 KM (1.2 MI) NORTHEAST OF CAMBRIDGE,
 HV8273'8.1 KM (5 MI) SOUTH OF TRAPPE AND ON THE NEW CHOPTANK RIVER BRIDGE.
 HV8273'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8273'
 HV8273'TO REACH THE STATION FROM THE SOUTH END OF THE NEW U.S. HIGHWAY 50
 HV8273'BRIDGE AT CAMBRIDGE, GO NORTH FOR 0.9 KM (.55 MI) ON THE BRIDGE TO A
 HV8273'RIVER CHANNEL AND THE STATION TO THE LEFT.
 HV8273'
 HV8273'THE STATION IS A STANDARD NGS DISK STAMPED ---CHOPTANK BRIDGE 1986---,
 HV8273'SET INTO A DRILL HOLE IN THE TOP OF THE CONCRETE MEDIAN BARRIER OF THE
 HV8273'BRIDGE, 11.3 METERS (37.0 FT) WEST FROM A LAMP POST NUMBER 34, 11.2
 HV8273'METERS (36.6 FT) EAST-SOUTHEAST FROM A LAMP POST NUMBER 33, 10.7
 HV8273'METERS (35.2 FT) WEST-NORTHWEST FROM THE EAST BARRIER OF THE BRIDGE
 HV8273'AND 10.6 METERS (34.9 FT) EAST-SOUTHEAST FROM THE WEST BARRIER OF THE
 HV8273'BRIDGE.
 HV8273'
 HV8273'REFERENCE MARK NO. 1 IS A STANDARD NGS DISK STAMPED
 HV8273'---CHOPTANK BRIDGE NO 1 1986---, SET INTO A DRILL HOLE IN THE TOP OF
 HV8273'THE EAST CONCRETE BARRIER OF THE BRIDGE WHICH PROJECTS 1 METER ABOVE
 HV8273'THE BRIDGE DECK.  9.0 METERS (29.7 FT) NORTH-NORTHEAST FROM THE LAMP
 HV8273'POST NUMBER 34, 10.7 METERS (35.1 FT) EAST-SOUTHEAST FROM THE MEDIAN
 HV8273'BARRIER, 21.4 METERS (70.1 FT) EAST-SOUTHEAST FROM THE WEST BARRIER
 HV8273'AND 23.6 METERS (77.6 FT) EAST-NORTHEAST FROM THE LAMP POST NUMBER 33.
 HV8273'MARK IS LEVEL WITH THE STATION.
 HV8273'
 HV8273'REFERENCE MARK NO. 2 IS A STANDARD NGS DISK STAMPED
 HV8273'---CHOPTANK BRIDGE NO 2 1986---, SET INTO A DRILL HOLE IN THE TOP OF
 HV8273'THE WEST CONCRETE BARRIER OF THE BRIDGE WHICH PROJECTS 1 METER ABOVE
 HV8273'THE BRIDGE DECK.  9.0 METERS (29.5 FT) NORTH-NORTHEAST FROM THE LAMP
 HV8273'POST NUMBER 33, 10.7 METERS (35.0 FT) WEST-NORTHWEST FROM THE MEDIAN
 HV8273'BARRIER, 21.4 METERS (70.1 FT) WEST-NORTHWEST FROM THE EAST BARRIER
 HV8273'AND 23.6 METERS (77.3 FT) NORTHWEST FROM THE LAMP POST NUMBER 34.
 HV8273'MARK IS LEVEL WITH THE STATION.
 HV8273'
 HV8273'AZIMUTH MARK NO. 1 IS A STANDARD MD0230 DISK STAMPED ---CA 8---, SET
 HV8273'INTO A DRILL HOLE IN A SIDEWALK FOR THE OLD HIGHWAY 50 BRIDGE.  14.8
 HV8273'METERS (48.7 FT) NORTHEAST FROM A POWERLINE POLE NUMBER 33643-00729,
 HV8273'19.4 METERS (63.7 FT) NORTHEAST FROM A DRAINAGE INLET, 22.7 METERS
 HV8273'(74.5 FT) SOUTHEAST FROM A DRAINAGE INLET, 1.8 METERS (5.9 FT) SOUTH
 HV8273'FROM A BRONZE PLAQUE AND 3.3 METERS (10.8 FT) SOUTH-SOUTHWEST FROM A
 HV8273'CONCRETE BRIDGE RAIL POST.  TO REACH THE AZIMUTH FROM THE STATION, GO
 HV8273'SOUTH FOR 0.95 KM (0.55 MI) ON THE NEW U.S. HIGHWAY 50 BRIDGE TO THE
 HV8273'SOUTH END AND THE OLD U.S. HIGHWAY 50 BRIDGE ABUTMENT ON THE LEFT AND
 HV8273'THE MARK AS DESCRIBED.
 HV8273
 HV8273                          STATION RECOVERY (1987)
 HV8273
 HV8273'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HV8273'FROM THE SOUTH END OF THE NEW U.S. HIGHWAY 50 BRIDGE AT CAMBRIDGE GO
 HV8273'NORTH FOR 0.9 KM (0.55 MI) ON THE BRIDGE TO THE MARK ON THE LEFT. 11.3
 HV8273'M (37.1 FT) WEST FROM LAMP POST NO 34, 11.2 M (36.7 FT) ESE FROM LAMP
 HV8273'POST NO 33, 10.7 M (35.1 FT) WNW FROM THE EAST BARRIER OF THE BRIDGE,
 HV8273'AND 10.6 M (34.8 FT) ESE FROM THE WEST BARRIER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8274 ***********************************************************************
 HV8274  DESIGNATION -  CHOPTANK BRIDGE RM 1
 HV8274  PID         -  HV8274
 HV8274  STATE/COUNTY-  MD/DORCHESTER
 HV8274  COUNTRY     -  US
 HV8274  USGS QUAD   -  CAMBRIDGE (2016)
 HV8274
 HV8274                         *CURRENT SURVEY CONTROL
 HV8274  ______________________________________________________________________
 HV8274* NAD 83(1991) POSITION- 38 34 43.84584(N) 076 03 26.63445(W)   ADJUSTED
 HV8274* NAVD 88 ORTHO HEIGHT -    19.517 (meters)       64.03  (feet) ADJUSTED
 HV8274  ______________________________________________________________________
 HV8274  GEOID HEIGHT    -        -35.051 (meters)                     GEOID18
 HV8274  LAPLACE CORR    -         -3.35  (seconds)                    DEFLEC18
 HV8274  DYNAMIC HEIGHT  -         19.505 (meters)       63.99  (feet) COMP
 HV8274  MODELED GRAVITY -    980,018.3   (mgal)                       NAVD 88
 HV8274
 HV8274  HORZ ORDER      -  THIRD
 HV8274  VERT ORDER      -  SECOND    CLASS I
 HV8274
 HV8274.The horizontal coordinates were established by classical geodetic methods
 HV8274.and adjusted by the National Geodetic Survey in January 1992.
 HV8274
 HV8274.The orthometric height was determined by differential leveling and
 HV8274.adjusted by the NATIONAL GEODETIC SURVEY
 HV8274.in October 1997.
 HV8274
 HV8274.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8274.GEOID18 height accuracy estimate available here.
 HV8274
 HV8274.Click photographs - Photos may exist for this station.
 HV8274
 HV8274.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8274
 HV8274.The dynamic height is computed by dividing the NAVD 88
 HV8274.geopotential number by the normal gravity value computed on the
 HV8274.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8274.degrees latitude (g = 980.6199 gals.).
 HV8274
 HV8274.The modeled gravity was interpolated from observed gravity values.
 HV8274
 HV8274. The following values were computed from the NAD 83(1991) position.
 HV8274
 HV8274;                    North         East     Units Scale Factor Converg.
 HV8274;SPC MD       -   101,679.508   482,131.544   MT  0.99996320   +0 35 29.8
 HV8274;SPC MD       -   333,593.52  1,581,793.24   sFT  0.99996320   +0 35 29.8
 HV8274;UTM  18      - 4,270,572.385   407,896.528   MT  0.99970446   -0 39 33.9
 HV8274
 HV8274!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8274!SPC MD       -   1.00000244  x   0.99996320  =   0.99996564
 HV8274!UTM  18      -   1.00000244  x   0.99970446  =   0.99970690
 HV8274
 HV8274_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0789670572(NAD 83)
 HV8274
 HV8274                          SUPERSEDED SURVEY CONTROL
 HV8274
 HV8274  NAD 83(1986)-  38 34 43.84231(N)    076 03 26.65148(W) AD(       ) 3
 HV8274  NGVD 29              19.76   (m)           64.8    (f) LEVELING    3  
 HV8274
 HV8274.Superseded values are not recommended for survey control.
 HV8274
 HV8274.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8274.See file dsdata.pdf to determine how the superseded data were derived.
 HV8274
 HV8274_MARKER: DR = REFERENCE MARK DISK
 HV8274_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 HV8274_SP_SET: BARRIER WALL
 HV8274_STAMPING: CHOPTANK BRIDGE NO 1 1986
 HV8274_MARK LOGO: NGS
 HV8274_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8274_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8274_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8274+SATELLITE: SATELLITE OBSERVATIONS - February 01, 2010
 HV8274
 HV8274  HISTORY     - Date     Condition        Report By
 HV8274  HISTORY     - 1986     MONUMENTED       NGS
 HV8274  HISTORY     - 19870101 GOOD             MDDT
 HV8274  HISTORY     - 20100201 GOOD             NGS
 HV8274
 HV8274                          STATION DESCRIPTION
 HV8274
 HV8274'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1987 (RGP)
 HV8274'FROM THE SOUTH END OF THE NEW CHOPTANK RIVER BRIDGE AT CAMBRIDGE GO
 HV8274'NORTH ON THE BRIDGE FOR 1.1 KM (0.70 MI) TO THE MARK ON THE RIGHT IN
 HV8274'THE EAST BARRIER WALL. 9.0 M (29.5 FT) NNE FROM LAMP POST NO 34, 10.7
 HV8274'M (35.1 FT) ESE FROM A MEDIAN BARRIER, 21.4 M (70.2 FT) ESE FROM A
 HV8274'WEST BARRIER, AND 23.6 M (77.4 FT) ENE FROM LAMP POST NO 33.
 HV8274
 HV8274                          STATION RECOVERY (2010)
 HV8274
 HV8274'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HV8274'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8275 ***********************************************************************
 HV8275  DESIGNATION -  CHOPTANK BRIDGE RM 2
 HV8275  PID         -  HV8275
 HV8275  STATE/COUNTY-  MD/DORCHESTER
 HV8275  COUNTRY     -  US
 HV8275  USGS QUAD   -  CAMBRIDGE (2016)
 HV8275
 HV8275                         *CURRENT SURVEY CONTROL
 HV8275  ______________________________________________________________________
 HV8275* NAD 83(1991) POSITION- 38 34 44.20288(N) 076 03 27.39138(W)   ADJUSTED
 HV8275* NAVD 88 ORTHO HEIGHT -    19.511 (meters)       64.01  (feet) ADJUSTED
 HV8275  ______________________________________________________________________
 HV8275  GEOID HEIGHT    -        -35.051 (meters)                     GEOID18
 HV8275  LAPLACE CORR    -         -3.35  (seconds)                    DEFLEC18
 HV8275  DYNAMIC HEIGHT  -         19.499 (meters)       63.97  (feet) COMP
 HV8275  MODELED GRAVITY -    980,018.3   (mgal)                       NAVD 88
 HV8275
 HV8275  HORZ ORDER      -  THIRD
 HV8275  VERT ORDER      -  SECOND    CLASS I
 HV8275
 HV8275.The horizontal coordinates were established by classical geodetic methods
 HV8275.and adjusted by the National Geodetic Survey in January 1992.
 HV8275
 HV8275.The orthometric height was determined by differential leveling and
 HV8275.adjusted by the NATIONAL GEODETIC SURVEY
 HV8275.in October 1997.
 HV8275
 HV8275.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8275.GEOID18 height accuracy estimate available here.
 HV8275
 HV8275.Click photographs - Photos may exist for this station.
 HV8275
 HV8275.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8275
 HV8275.The dynamic height is computed by dividing the NAVD 88
 HV8275.geopotential number by the normal gravity value computed on the
 HV8275.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8275.degrees latitude (g = 980.6199 gals.).
 HV8275
 HV8275.The modeled gravity was interpolated from observed gravity values.
 HV8275
 HV8275. The following values were computed from the NAD 83(1991) position.
 HV8275
 HV8275;                    North         East     Units Scale Factor Converg.
 HV8275;SPC MD       -   101,690.328   482,113.111   MT  0.99996319   +0 35 29.3
 HV8275;SPC MD       -   333,629.02  1,581,732.77   sFT  0.99996319   +0 35 29.3
 HV8275;UTM  18      - 4,270,583.601   407,878.340   MT  0.99970451   -0 39 34.4
 HV8275
 HV8275!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8275!SPC MD       -   1.00000244  x   0.99996319  =   0.99996563
 HV8275!UTM  18      -   1.00000244  x   0.99970451  =   0.99970695
 HV8275
 HV8275_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0787870583(NAD 83)
 HV8275
 HV8275                          SUPERSEDED SURVEY CONTROL
 HV8275
 HV8275  NAD 83(1986)-  38 34 44.19936(N)    076 03 27.40841(W) AD(       ) 3
 HV8275  NGVD 29              19.75   (m)           64.8    (f) LEVELING    3  
 HV8275
 HV8275.Superseded values are not recommended for survey control.
 HV8275
 HV8275.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8275.See file dsdata.pdf to determine how the superseded data were derived.
 HV8275
 HV8275_MARKER: DR = REFERENCE MARK DISK
 HV8275_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV8275_SP_SET: BARRIER WALL
 HV8275_STAMPING: CHOPTANK BRIDGE NO 2 1986
 HV8275_MARK LOGO: NGS
 HV8275_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8275_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8275_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8275+SATELLITE: SATELLITE OBSERVATIONS - February 01, 2010
 HV8275
 HV8275  HISTORY     - Date     Condition        Report By
 HV8275  HISTORY     - 1986     MONUMENTED       NGS
 HV8275  HISTORY     - 19870101 GOOD             MDDT
 HV8275  HISTORY     - 20100201 GOOD             NGS
 HV8275
 HV8275                          STATION DESCRIPTION
 HV8275
 HV8275'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1987 (RGP)
 HV8275'FROM THE SOUTH END OF THE NEW CHOPTANK RIVER BRIDGE AT CAMBRIDGE GO
 HV8275'NORTH FOR 1.1 KM (0.70 MI) ON THE BRIDGE TO THE MARK ON THE LEFT, IN
 HV8275'THE WEST BARRIER WALL FOR THE BRIDGE. 9.0 M (29.5 FT) NNE FROM LAMP
 HV8275'POST NO 33, 10.7 M (35.1 FT) WNW FROM A MEDIAN BARRIER, 21.4 M (70.2
 HV8275'FT) WNW RFOM THE EAST BARRIER, AND 23.6 M (77.4 FT) NW FROM LAMP POIST
 HV8275'NO 34.
 HV8275
 HV8275                          STATION RECOVERY (2010)
 HV8275
 HV8275'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HV8275'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6056 ***********************************************************************
 HV6056  DESIGNATION -  CHOPTANK RIVER LIGHTHOUSE
 HV6056  PID         -  HV6056
 HV6056  STATE/COUNTY-  MD/TALBOT
 HV6056  COUNTRY     -  US
 HV6056  USGS QUAD   -  OXFORD (2016)
 HV6056
 HV6056                         *CURRENT SURVEY CONTROL
 HV6056  ______________________________________________________________________
 HV6056* NAD 83(1991) POSITION- 38 39 20.64292(N) 076 11 04.13549(W)   ADJUSTED
 HV6056* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6056  ______________________________________________________________________
 HV6056  GEOID HEIGHT    -        -34.668 (meters)                     GEOID18
 HV6056  LAPLACE CORR    -         -4.21  (seconds)                    DEFLEC18
 HV6056  HORZ ORDER      -  THIRD
 HV6056
 HV6056.The horizontal coordinates were established by classical geodetic methods
 HV6056.and adjusted by the National Geodetic Survey in January 1992.
 HV6056
 HV6056.The orthometric height was scaled from a topographic map.
 HV6056
 HV6056.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6056.GEOID18 height accuracy estimate available here.
 HV6056
 HV6056.Click photographs - Photos may exist for this station.
 HV6056
 HV6056.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6056
 HV6056. The following values were computed from the NAD 83(1991) position.
 HV6056
 HV6056;                    North         East     Units Scale Factor Converg.
 HV6056;SPC MD       -   110,107.404   470,982.461   MT  0.99995719   +0 30 42.6
 HV6056;SPC MD       -   361,244.04  1,545,214.96   sFT  0.99995719   +0 30 42.6
 HV6056;UTM  18      - 4,279,239.653   396,936.822   MT  0.99973080   -0 44 23.8
 HV6056
 HV6056!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6056!SPC MD       -   1.00000548  x   0.99995719  =   0.99996267
 HV6056!UTM  18      -   1.00000548  x   0.99973080  =   0.99973627
 HV6056
 HV6056_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9693679239(NAD 83)
 HV6056
 HV6056                          SUPERSEDED SURVEY CONTROL
 HV6056
 HV6056  NAD 83(1986)-  38 39 20.64035(N)    076 11 04.15133(W) AD(       ) 3
 HV6056  NAD 27      -  38 39 20.20200(N)    076 11 05.35200(W) AD(       ) 3
 HV6056
 HV6056.Superseded values are not recommended for survey control.
 HV6056
 HV6056.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6056.See file dsdata.pdf to determine how the superseded data were derived.
 HV6056
 HV6056_MARKER: 13 = LIGHTHOUSE
 HV6056
 HV6056  HISTORY     - Date     Condition        Report By
 HV6056  HISTORY     - 1921     FIRST OBSERVED   CGS
 HV6056  HISTORY     - 1961     GOOD             CGS
 HV6056  HISTORY     - 1964     SEE DESCRIPTION  LOCENG
 HV6056
 HV6056                          STATION DESCRIPTION
 HV6056
 HV6056'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6056'LIGHTHOUSE WAS FOUND TO BE IN GOOD CONDITION.  IT IS A WHITE
 HV6056'HEXAGONAL TOWER ON PILING 35 FT. IN HEIGHT.  (LIGHT NO. 3441 IN
 HV6056'THE 1960 LIST OF LIGHTS, ATLANTIC COAST).
 HV6056
 HV6056                          STATION RECOVERY (1964)
 HV6056
 HV6056'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1964
 HV6056'RECOVERED BY MDDCBA.
 HV6056'
 HV6056'THE LIGHTHOUSE STRUCTURE HAS BEEN REMOVED FROM HEXAGONAL BASE AND
 HV6056'A WHITE SKELETON STEEL TOWER HAS BEEN CONSTRUCTED.  STATION
 HV6056'IS THE TOP OF THE LIGHT STRUCTURE ON THE STEEL TOWER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3574 ***********************************************************************
 JU3574  DESIGNATION -  CHRYSTAL
 JU3574  PID         -  JU3574
 JU3574  STATE/COUNTY-  MD/CECIL
 JU3574  COUNTRY     -  US
 JU3574  USGS QUAD   -  EARLEVILLE (2016)
 JU3574
 JU3574                         *CURRENT SURVEY CONTROL
 JU3574  ______________________________________________________________________
 JU3574* NAD 83(1991) POSITION- 39 26 37.94942(N) 075 58 37.15798(W)   ADJUSTED
 JU3574* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JU3574  ______________________________________________________________________
 JU3574  GEOID HEIGHT    -        -33.375 (meters)                     GEOID18
 JU3574  LAPLACE CORR    -         -0.81  (seconds)                    DEFLEC18
 JU3574  HORZ ORDER      -  SECOND
 JU3574
 JU3574.The horizontal coordinates were established by classical geodetic methods
 JU3574.and adjusted by the National Geodetic Survey in January 1992.
 JU3574
 JU3574.The orthometric height was scaled from a topographic map.
 JU3574
 JU3574.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3574.GEOID18 height accuracy estimate available here.
 JU3574
 JU3574.Click photographs - Photos may exist for this station.
 JU3574
 JU3574.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3574
 JU3574. The following values were computed from the NAD 83(1991) position.
 JU3574
 JU3574;                    North         East     Units Scale Factor Converg.
 JU3574;SPC MD       -   197,777.047   488,061.522   MT  0.99999893   +0 38 31.5
 JU3574;SPC MD       -   648,873.53  1,601,248.51   sFT  0.99999893   +0 38 31.5
 JU3574;UTM  18      - 4,366,491.128   415,931.194   MT  0.99968702   -0 37 14.7
 JU3574
 JU3574!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3574!SPC MD       -   1.00000496  x   0.99999893  =   1.00000389
 JU3574!UTM  18      -   1.00000496  x   0.99968702  =   0.99969198
 JU3574
 JU3574:                Primary Azimuth Mark                     Grid Az
 JU3574:SPC MD       -  CHRYSTAL RM 2 AZIMUTH                    111 02 19.5
 JU3574:UTM  18      -  CHRYSTAL RM 2 AZIMUTH                    112 18 05.7
 JU3574
 JU3574_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1593166491(NAD 83)
 JU3574
 JU3574|---------------------------------------------------------------------|
 JU3574| PID    Reference Object                     Distance      Geod. Az  |
 JU3574|                                                           dddmmss.s |
 JU3574| CB1353 CHRYSTAL RM 1                        29.066 METERS 06834     |
 JU3574| CB1352 CHRYSTAL RM 2 AZIMUTH                              1114051.0 |
 JU3574| CB1354 CHRYSTAL RM 3                        32.409 METERS 15302     |
 JU3574|---------------------------------------------------------------------|
 JU3574
 JU3574                          SUPERSEDED SURVEY CONTROL
 JU3574
 JU3574  NAD 83(1986)-  39 26 37.94172(N)    075 58 37.16431(W) AD(       ) 2
 JU3574  NAD 27      -  39 26 37.54580(N)    075 58 38.37420(W) AD(       ) 2
 JU3574
 JU3574.Superseded values are not recommended for survey control.
 JU3574
 JU3574.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3574.See file dsdata.pdf to determine how the superseded data were derived.
 JU3574
 JU3574_MARKER: DS = TRIANGULATION STATION DISK
 JU3574_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3574_STAMPING: CHRYSTAL 1933
 JU3574_MARK LOGO: CGS
 JU3574_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3574+STABILITY: SURFACE MOTION
 JU3574
 JU3574  HISTORY     - Date     Condition        Report By
 JU3574  HISTORY     - 1933     MONUMENTED       CGS
 JU3574  HISTORY     - 1937     GOOD             CGS
 JU3574  HISTORY     - 1964     GOOD             MDDT
 JU3574  HISTORY     - 20250312 MARK NOT FOUND   INDIV
 JU3574
 JU3574                          STATION DESCRIPTION
 JU3574
 JU3574'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JU3574'IN THE VILLAGE OF CRYSTAL BEACH (VILLAGE SPELLED CRYSTAL, BUT
 JU3574'STATION IS STAMPED CHRYSTAL) JUST N OF A DRAINAGE RAVINE THAT
 JU3574'DIVIDES THE RESORT VILLAGE INTO TWO PARTS.  IT IS ON THE BLUFF
 JU3574'OVERLOOKING THE BAY.
 JU3574'
 JU3574'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE
 JU3574'DISKS SET IN CONCRETE.
 JU3574'
 JU3574'REFERENCE MARK NO.1 IS 38.5 FEET S OF TOP EDGE OF BLUFF, 1 FOOT
 JU3574'SW OF BARBED WIRE FENCE, AND 117 FEET SW OF S CORNER OF
 JU3574'OBSERVATION PLATFORM SUPPORTED BY STEEL BEAMS.
 JU3574'
 JU3574'REFERENCE MARK NO.2 IS APPROXIMATELY 0.4 MILE S OF THE ENTRANCE
 JU3574'TO CRYSTAL BEACH.
 JU3574'
 JU3574'IT IS 15 FEET W OF CENTER LINE OF N AND S ROAD, 50 FEET S OF
 JU3574'TOP EDGE OF GRAVEL PIT, AND IN THE RANGE OF THE BLUFF AT TURKEY
 JU3574'POINT AND THE POINT WHERE DRAINAGE RAVINE ENTERS THE BAY JUST S
 JU3574'OF THE STATION.  THE REFERENCE MARK IS ABOUT 100 METERS N OF THE
 JU3574'BOTTOM OF SAID RAVINE.
 JU3574'
 JU3574'REFERENCE MARK NO.3 IS 94 FEET ENE OF 48-INCH OAK TREE STANDING
 JU3574'ON THE EDGE OF THE BLUFF.
 JU3574'
 JU3574'THE STATION MARK IS STAMPED CHRYSTAL 1933 AND ALL REFERENCE
 JU3574'MARKS ARE STAMPED CHRYSTAL, NO. , 1933.
 JU3574'
 JU3574'THIS IS A SECOND-ORDER STATION.  ALL OBJECTS OBSERVED UPON AT
 JU3574'THIS OCCUPATION ARE VISIBLE FROM THE GROUND.  TURKEY POINT IS
 JU3574'ALSO VISIBLE FROM THE GROUND AT CHRYSTAL.
 JU3574'
 JU3574'TO REACH FROM CECILTON, MARYLAND, FROM THE INTERSECTION OF
 JU3574'U.S. HIGHWAY 213 (ELKTON HIGHWAY) AND THE EARLEVILLE HIGHWAY, GO
 JU3574'NNW TOWARD EARLEVILLE FOR 2.5 MILES AND TAKE RIGHT FORK, THENCE
 JU3574'0.4 MILE TO EARLEVILLE, AND TURN LEFT, THENCE ABOUT 200 FEET AND
 JU3574'TURN RIGHT, THENCE ALONG MAIN HIGHWAY 4.2 MILES TO ENTRANCE TO
 JU3574'CRYSTAL BEACH.  PROCEED STRAIGHT AHEAD 0.25 MILE AND TURN RIGHT,
 JU3574'THENCE 0.4 MILE AND TURN LEFT, THENCE 0.1 MILE AND TURN RIGHT,
 JU3574'THENCE 0.1 MILE TO THE STATION.  THE MARK IS 8 FEET SE OF THE
 JU3574'TOP EDGE OF THE BLUFF, AND 98 FEET NE OF CENTER OF 48-INCH
 JU3574'OAK STANDING ON EDGE OF BLUFF.  TRUCKS MAY BE DRIVEN DIRECTLY
 JU3574'TO THE MARK WHICH PROJECTS ABOUT 6 INCHES.
 JU3574'
 JU3574'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JU3574
 JU3574                          STATION RECOVERY (1937)
 JU3574
 JU3574'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU3574'RECOVERED AS DESCRIBED IN GOOD CONDITION.  THE PRESENT
 JU3574'DESCRIPTION IS ADEQUATE.
 JU3574'
 JU3574'A SIGNAL POLE WAS BUILT OVER THE STATION FOR CONNECTING WITH
 JU3574'THE U.S. ENGINEERS TRIANGULATION.
 JU3574
 JU3574                          STATION RECOVERY (1964)
 JU3574
 JU3574'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1964
 JU3574'STATION, R.M. 2 AND R.M. 3 WERE FOUND IN GOOD CONDITION AS
 JU3574'DESCRIBED.  DESCRIPTION IS ADEQUATE.
 JU3574'
 JU3574'R.M. 2 WAS SEARCHED FOR BUT NOT FOUND.  MAYBE INTACT.
 JU3574
 JU3574                          STATION RECOVERY (2025)
 JU3574
 JU3574'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2025 (MM)
 JU3574'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1936 ***********************************************************************
 HU1936  DESIGNATION -  CHURCH
 HU1936  PID         -  HU1936
 HU1936  STATE/COUNTY-  MD/WICOMICO
 HU1936  COUNTRY     -  US
 HU1936  USGS QUAD   -  WETIPQUIN (2016)
 HU1936
 HU1936                         *CURRENT SURVEY CONTROL
 HU1936  ______________________________________________________________________
 HU1936* NAD 83(1991) POSITION- 38 18 28.10953(N) 075 45 42.54227(W)   ADJUSTED
 HU1936* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1936  ______________________________________________________________________
 HU1936  GEOID HEIGHT    -        -35.803 (meters)                     GEOID18
 HU1936  LAPLACE CORR    -         -1.30  (seconds)                    DEFLEC18
 HU1936  HORZ ORDER      -  THIRD
 HU1936
 HU1936.The horizontal coordinates were established by classical geodetic methods
 HU1936.and adjusted by the National Geodetic Survey in January 1992.
 HU1936
 HU1936.The orthometric height was scaled from a topographic map.
 HU1936
 HU1936.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1936.GEOID18 height accuracy estimate available here.
 HU1936
 HU1936.Click photographs - Photos may exist for this station.
 HU1936
 HU1936.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1936
 HU1936. The following values were computed from the NAD 83(1991) position.
 HU1936
 HU1936;                    North         East     Units Scale Factor Converg.
 HU1936;SPC MD       -    71,904.004   508,293.032   MT  0.99999865   +0 46 37.7
 HU1936;SPC MD       -   235,905.05  1,667,624.72   sFT  0.99999865   +0 46 37.7
 HU1936;UTM  18      - 4,240,242.371   433,394.552   MT  0.99965463   -0 28 20.1
 HU1936
 HU1936!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1936!SPC MD       -   1.00000550  x   0.99999865  =   1.00000415
 HU1936!UTM  18      -   1.00000550  x   0.99965463  =   0.99966013
 HU1936
 HU1936:                Primary Azimuth Mark                     Grid Az
 HU1936:SPC MD       -  COLLINS                                  162 25 27.2
 HU1936:UTM  18      -  COLLINS                                  163 40 25.0
 HU1936
 HU1936_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3339440242(NAD 83)
 HU1936
 HU1936|---------------------------------------------------------------------|
 HU1936| PID    Reference Object                     Distance      Geod. Az  |
 HU1936|                                                           dddmmss.s |
 HU1936| HU1937 COLLINS                             APPROX. 2.1 KM 1631204.9 |
 HU1936| DC7921 CHURCH RM 2                                        21742     |
 HU1936| DC7920 CHURCH RM 1                                        28743     |
 HU1936|---------------------------------------------------------------------|
 HU1936
 HU1936                          SUPERSEDED SURVEY CONTROL
 HU1936
 HU1936  NAD 83(1986)-  38 18 28.10567(N)    075 45 42.56550(W) AD(       ) 3
 HU1936  NAD 27      -  38 18 27.68000(N)    075 45 43.82200(W) AD(       ) 3
 HU1936
 HU1936.Superseded values are not recommended for survey control.
 HU1936
 HU1936.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1936.See file dsdata.pdf to determine how the superseded data were derived.
 HU1936
 HU1936_MARKER: DS = TRIANGULATION STATION DISK
 HU1936_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1936_STAMPING: CHURCH 1932
 HU1936_MARK LOGO: CGS
 HU1936_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1936+STABILITY: SURFACE MOTION
 HU1936
 HU1936  HISTORY     - Date     Condition        Report By
 HU1936  HISTORY     - 1932     MONUMENTED       CGS
 HU1936  HISTORY     - 1942     GOOD             CGS
 HU1936
 HU1936                          STATION DESCRIPTION
 HU1936
 HU1936'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1936'STATION IS ON THE BLUFF NE OF THE SITE OF OLD GREEN HILL CHURCH,
 HU1936'WHICH IS ON THE N BANK OF WICOMICO RIVER, ABOUT 3-1/4 MILES ABOVE
 HU1936'WHITE HAVEN.  THE NEAREST CORNER OF THIS CHURCH IS 138 METERS
 HU1936'AWAY.  THE STATION IS ON THE N SIDE OF A DIRT ROAD AND 5 METERS
 HU1936'INLAND FROM THE EDGE OF THE RIVER BLUFF.  SOME OLD PILES OF A
 HU1936'FORMER RIVER LANDING ARE ABOUT 68 METERS DOWNSTREAM FROM THE
 HU1936'STATION.  GREEN HILL CHURCH CAN BE EASILY REACHED FROM
 HU1936'INLAND VIA A GOOD GRAVEL ROAD FROM GREEN HILL.
 HU1936'
 HU1936'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1936'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HU1936'
 HU1936'HEIGHT OF SIGNAL ABOVE STATION MARK - 4.9 METERS.
 HU1936
 HU1936                          STATION RECOVERY (1942)
 HU1936
 HU1936'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1936'THE STATION IS LOCATED ABOUT 3-1/4 MILES UP THE WICOMICO RIVER FROM
 HU1936'WHITEHAVEN, ON THE NORTHERN SIDE OF THE RIVER AND ABOUT 550 FEET E
 HU1936'OF THE SE CORNER OF THE OLD GREEN HILL CHURCH, NOW KNOWN AS
 HU1936'ST. BARTHOLOMEWS EPISCOPAL CHURCH OF STEPHNEY PARISH.  THE STATION
 HU1936'IS ON THE N EDGE OF A DIRT ROAD WHICH RUNS E FROM THE CHURCH AND
 HU1936'16 FEET N OF A 12-FOOT RIVER BLUFF.  SOME OLD PILES OF A FORMER
 HU1936'RIVER LANDING ARE ABOUT 220 FEET DOWNSTREAM FROM THE STATION.
 HU1936'THE STATION IS A BRONZE DISK, STAMPED CHURCH 1932, SET IN THE TOP
 HU1936'OF AN 11-INCH SQUARE CONCRETE MONUMENT, WHICH IS FLUSH WITH THE
 HU1936'SURFACE OF THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1936'
 HU1936'REFERENCE MARK NO.1 IS LOST.  ONE HOURS DIGGING AT THE POINT AT
 HU1936'WHICH THIS REFERENCE MARK WAS LOCATED, FAILED TO UNCOVER THE
 HU1936'MARK.  AS EVIDENCE FROM THE GROUND, THE DEBRIS OF A BUILDING WHICH
 HU1936'HAD FORMERLY STOOD NEAR THIS SITE HAD BEEN PILED OVER THE LOCATION
 HU1936'OF THE MARK.
 HU1936'
 HU1936'REFERENCE MARK NO.2 IS 89.20 FEET W OF THE STATION, 15 FEET N
 HU1936'OF THE CENTER LINE OF A DIRT ROAD, 21 FEET W OF A LONE 4-INCH
 HU1936'POPLAR TREE, 87 FEET S OF A 15-INCH APPLE TREE, AND 21 FEET N OF A
 HU1936'12-FOOT RIVER BLUFF.  THE MARK IS A BRONZE DISK, WITH THE ARROW
 HU1936'POINTING TOWARD THE STATION, STAMPED CHURCH 1932 - NO.2, SET IN
 HU1936'THE TOP OF AN 11-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 3
 HU1936'INCHES ABOVE THE SURFACE OF THE GROUND.  THE MARK IS IN GOOD
 HU1936'CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5959 ***********************************************************************
 HV5959  DESIGNATION -  CHURCH
 HV5959  PID         -  HV5959
 HV5959  STATE/COUNTY-  MD/DORCHESTER
 HV5959  COUNTRY     -  US
 HV5959  USGS QUAD   -  CHURCH CREEK (2016)
 HV5959
 HV5959                         *CURRENT SURVEY CONTROL
 HV5959  ______________________________________________________________________
 HV5959* NAD 83(1991) POSITION- 38 30 03.59545(N) 076 09 22.69041(W)   ADJUSTED
 HV5959* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5959  ______________________________________________________________________
 HV5959  GEOID HEIGHT    -        -34.997 (meters)                     GEOID18
 HV5959  LAPLACE CORR    -         -4.45  (seconds)                    DEFLEC18
 HV5959  HORZ ORDER      -  FIRST
 HV5959
 HV5959.The horizontal coordinates were established by classical geodetic methods
 HV5959.and adjusted by the National Geodetic Survey in January 1992.
 HV5959
 HV5959.The orthometric height was scaled from a topographic map.
 HV5959
 HV5959.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5959.GEOID18 height accuracy estimate available here.
 HV5959
 HV5959.Click photographs - Photos may exist for this station.
 HV5959
 HV5959.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5959
 HV5959. The following values were computed from the NAD 83(1991) position.
 HV5959
 HV5959;                    North         East     Units Scale Factor Converg.
 HV5959;SPC MD       -    92,954.271   473,593.843   MT  0.99997112   +0 31 46.3
 HV5959;SPC MD       -   304,967.47  1,553,782.47   sFT  0.99997112   +0 31 46.3
 HV5959;UTM  18      - 4,262,037.665   399,172.683   MT  0.99972519   -0 43 11.6
 HV5959
 HV5959!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5959!SPC MD       -   1.00000537  x   0.99997112  =   0.99997649
 HV5959!UTM  18      -   1.00000537  x   0.99972519  =   0.99973056
 HV5959
 HV5959:                Primary Azimuth Mark                     Grid Az
 HV5959:SPC MD       -  CHURCH RM 2                              214 15 15.1
 HV5959:UTM  18      -  CHURCH RM 2                              215 30 13.0
 HV5959
 HV5959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9917262037(NAD 83)
 HV5959
 HV5959|---------------------------------------------------------------------|
 HV5959| PID    Reference Object                     Distance      Geod. Az  |
 HV5959|                                                           dddmmss.s |
 HV5959| HV5870 CAMBRIDGE STANDPIPE                 APPROX.10.2 KM 0411246.9 |
 HV5959| HV5877 CAMBRIDGE MFG CO TANK               APPROX.10.8 KM 0434139.3 |
 HV5959| HV5883 CAMBRIDGE PHILLIPS TANK             APPROX.10.1 KM 0494632.2 |
 HV5959| HV6447 CHURCH CREEK LOOKOUT TOWER          APPROX. 3.2 KM 1581656.5 |
 HV5959| CX2606 CHURCH RM 1                          23.275 METERS 21201     |
 HV5959| CX2607 CHURCH RM 2                                        2144701.4 |
 HV5959| CX2608 CHURCH RM 3                          28.699 METERS 31851     |
 HV5959|---------------------------------------------------------------------|
 HV5959
 HV5959                          SUPERSEDED SURVEY CONTROL
 HV5959
 HV5959  NAD 83(1986)-  38 30 03.59297(N)    076 09 22.70741(W) AD(       ) 1
 HV5959  NAD 27      -  38 30 03.15800(N)    076 09 23.91600(W) AD(       ) 1
 HV5959
 HV5959.Superseded values are not recommended for survey control.
 HV5959
 HV5959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5959.See file dsdata.pdf to determine how the superseded data were derived.
 HV5959
 HV5959_MARKER: DS = TRIANGULATION STATION DISK
 HV5959_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5959_STAMPING: CHURCH 1934
 HV5959_MARK LOGO: CGS
 HV5959_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5959+STABILITY: SURFACE MOTION
 HV5959
 HV5959  HISTORY     - Date     Condition        Report By
 HV5959  HISTORY     - 1934     MONUMENTED       CGS
 HV5959  HISTORY     - 1942     GOOD             CGS
 HV5959  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV5959
 HV5959                          STATION DESCRIPTION
 HV5959
 HV5959'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV5959'STATION IS LOCATED ABOUT 6 MILES SSW OF CAMBRIDGE, IN THE TOWN OF
 HV5959'CHURCH CREEK, WHICH IS AT THE END OF CHURCH CREEK, ON THE
 HV5959'PROPERTY OF MR. THOMAS LINTHICUM, 60 YARDS SW OF HOUSE ON PASTURE
 HV5959'LAND.  60 FEET E OF HIGH-WATER MARK ON WATERS EDGE.  90 FEET S OF
 HV5959'A 5-FOOT WIRE FENCE, 50 FEET S OF A 12-INCH APPLE TREE, AND 125
 HV5959'FEET E OF THE ROAD LEADING TO HOUSE.
 HV5959'
 HV5959'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE DISKS
 HV5959'SET IN CONCRETE.
 HV5959'
 HV5959'REFERENCE MARK NO.1 IS 76.39 FEET WSW OF STATION, PROJECTS 5
 HV5959'INCHES ABOVE THE GROUND, AND IS 30 FEET SE OF HIGH-WATER MARK OF
 HV5959'CHURCH CREEK.
 HV5959'
 HV5959'REFERENCE MARK NO.2 (AZIMUTH MARK) IS ABOUT 0.4 MILE WSW OF
 HV5959'STATION, 5 PACES S OF THE CENTER OF DIRT ROAD.  IN THE FENCE LINE
 HV5959'OF AN UNCULTIVATED FIELD, AND 30 PACES NW OF A LARGE CEDAR TREE.
 HV5959'
 HV5959'REFERENCE MARK NO.3 IS 94.27 FEET NW OF STATION, 7 FEET E OF
 HV5959'HIGH-WATER MARK AND 1 FOOT S OF THE 5-FOOT WIRE FENCE.
 HV5959'
 HV5959'TO REACH FROM CAMBRIDGE AT THE INTERSECTION OF ROUTE 16 AND RACE
 HV5959'STREET, GO OUT RACE STREET E 2.1 MILES TO ROAD INTERSECTION.  TAKE
 HV5959'LEFT FORK AND CONTINUE ON PAVEMENT 4.0 MILES TO CHURCH CREEK POST
 HV5959'OFFICE, TAKE RIGHT FORK ON DIRT ROAD IN FRONT OF YELLOW BUILDING
 HV5959'BEARING SIGN LABELED RICHARD FAMILY BURYING GROUND AND GO STRAIGHT
 HV5959'AHEAD FOR 0.2 MILE AND TAKE LEFT FORK 0.1 MILE TO LINTHICUM HOME
 HV5959'AND STATION.
 HV5959'
 HV5959'A 90-FOOT TOWER WAS USED WHICH CLEARED ALL LINES.
 HV5959
 HV5959                          STATION RECOVERY (1942)
 HV5959
 HV5959'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV5959'THE STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED AND
 HV5959'FOUND IN GOOD CONDITION.  FOLLOWING IS A COMPLETE NEW DESCRIPTION--
 HV5959'
 HV5959'THE STATION IS LOCATED IN THE SMALL TOWN OF CHURCH CREEK, ABOUT 6
 HV5959'MILES SSW OF CAMBRIDGE ON THE PROPERTY OF THOMAS LINTHICUM.  IT IS
 HV5959'180 FEET SW OF THE HOUSE AND 60 FEET E OF THE HIGH-WATER MARK OF
 HV5959'CHURCH CREEK.  IT PROJECTS ABOUT 4 INCHES AND IS STAMPED CHURCH 1934.
 HV5959'
 HV5959'REFERENCE MARK NO.1 IS WSW OF THE STATION AND 30 FEET E OF THE
 HV5959'HIGH-WATER MARK.  IT PROJECTS ABOUT 5 INCHES AND IS STAMPED CHURCH
 HV5959'NO.1 1934.
 HV5959'
 HV5959'REFERENCE MARK NO.3 IS NW OF THE STATION 7 FEET E OF THE
 HV5959'HIGH-WATER MARK.  IT PROJECTS ABOUT 5 INCHES AND IS STAMPED CHURCH
 HV5959'NO.3 1934.
 HV5959'
 HV5959'REFERENCE MARK NO.2 (AZIMUTH MARK) IS ABOUT 0.4 MILE WSW OF THE
 HV5959'STATION IN A FENCE LINE, 15 FEET S OF THE CENTER OF A DIRT ROAD.
 HV5959'IT PROJECTS ABOUT 2 INCHES AND IS STAMPED CHURCH NO 2 1934.
 HV5959'
 HV5959'TO REACH THE AZIMUTH MARK FROM THE CHURCH CREEK POST OFFICE GO SW
 HV5959'ON STATE HIGHWAY 50 FOR 0.45 MILE TO A DIRT ROAD LEFT, TURN LEFT
 HV5959'AND GO 0.1 MILE TO THE AZIMUTH MARK ON THE LEFT.
 HV5959'
 HV5959'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT JACKSON.
 HV5959'
 HV5959'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT MALVERN.
 HV5959'
 HV5959'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT FLEMING.
 HV5959'
 HV5959'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT BROOKS.
 HV5959'
 HV5959'A 77-FOOT TOWER WILL SEE A 90-FOOT LIGHT AT HARRINGTON.
 HV5959'
 HV5959'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT REFUGE.
 HV5959
 HV5959                          STATION RECOVERY (1971)
 HV5959
 HV5959'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV5959'THE STATION MARK AND RM MARKS WERE NOT RECOVERED ON THIS DATE. THE
 HV5959'PROPERTY OWNER, MR. ASPLEN, HAS FILLED IN THE LAND AND BUILT A
 HV5959'BRICK HOUSE NEAR THE DESCRIBED LOCATION OF THE MARKS.  HE STATED
 HV5959'THAT HE HAD NEVER SEEN THE MARKS.  THE AZIMUTH MARK WAS NOT
 HV5959'SEARCHED FOR THIS DATE.
 HV5959'
 HV5959'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN AT CHURCH CREEK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7461 ***********************************************************************
 HV7461  DESIGNATION -  CHURCH
 HV7461  PID         -  HV7461
 HV7461  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7461  COUNTRY     -  US
 HV7461  USGS QUAD   -  LANHAM (2016)
 HV7461
 HV7461                         *CURRENT SURVEY CONTROL
 HV7461  ______________________________________________________________________
 HV7461* NAD 83(1991) POSITION- 38 55 44.55206(N) 076 45 57.66251(W)   ADJUSTED
 HV7461* NAVD 88 ORTHO HEIGHT -    60.5   (meters)      198.    (feet) VERTCON3
 HV7461  ______________________________________________________________________
 HV7461  GEOID HEIGHT    -        -32.668 (meters)                     GEOID18
 HV7461  LAPLACE CORR    -         -5.63  (seconds)                    DEFLEC18
 HV7461  HORZ ORDER      -  FIRST
 HV7461
 HV7461.The horizontal coordinates were established by classical geodetic methods
 HV7461.and adjusted by the National Geodetic Survey in January 1992.
 HV7461
 HV7461.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7461.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7461
 HV7461.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7461.GEOID18 height accuracy estimate available here.
 HV7461
 HV7461.Click photographs - Photos may exist for this station.
 HV7461
 HV7461.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7461
 HV7461. The following values were computed from the NAD 83(1991) position.
 HV7461
 HV7461;                    North         East     Units Scale Factor Converg.
 HV7461;SPC MD       -   140,155.232   420,288.273   MT  0.99995028   +0 08 48.7
 HV7461;SPC MD       -   459,825.96  1,378,895.78   sFT  0.99995028   +0 08 48.7
 HV7461;UTM  18      - 4,310,385.044   346,919.682   MT  0.99988856   -1 06 35.7
 HV7461
 HV7461!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7461!SPC MD       -   0.99999564  x   0.99995028  =   0.99994592
 HV7461!UTM  18      -   0.99999564  x   0.99988856  =   0.99988420
 HV7461
 HV7461:                Primary Azimuth Mark                     Grid Az
 HV7461:SPC MD       -  CHURCH AZ MK                             345 38 12.7
 HV7461:UTM  18      -  CHURCH AZ MK                             346 53 37.1
 HV7461
 HV7461_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4691910385(NAD 83)
 HV7461
 HV7461|---------------------------------------------------------------------|
 HV7461| PID    Reference Object                     Distance      Geod. Az  |
 HV7461|                                                           dddmmss.s |
 HV7461| CX2610 CHURCH RM 1                          23.675 METERS 21921     |
 HV7461| CX2611 CHURCH RM 2                          20.815 METERS 26821     |
 HV7461| CX2609 CHURCH AZ MK                                       3454701.4 |
 HV7461|---------------------------------------------------------------------|
 HV7461
 HV7461                          SUPERSEDED SURVEY CONTROL
 HV7461
 HV7461  NAD 83(1986)-  38 55 44.54948(N)    076 45 57.67429(W) AD(       ) 1
 HV7461  NAD 27      -  38 55 44.14889(N)    076 45 58.78544(W) AD(       ) 1
 HV7461  NGVD 29 (07/19/86)   60.7    (m)          199.     (f) VERT ANG       
 HV7461
 HV7461.Superseded values are not recommended for survey control.
 HV7461
 HV7461.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7461.See file dsdata.pdf to determine how the superseded data were derived.
 HV7461
 HV7461_MARKER: DS = TRIANGULATION STATION DISK
 HV7461_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7461_STAMPING: CHURCH 1970
 HV7461_MARK LOGO: CGS
 HV7461_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7461+STABILITY: SURFACE MOTION
 HV7461
 HV7461  HISTORY     - Date     Condition        Report By
 HV7461  HISTORY     - 1970     MONUMENTED       NGS
 HV7461
 HV7461                          STATION DESCRIPTION
 HV7461
 HV7461'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7461'THE STATION IS ABOUT 5-1/2 MILES SOUTH OF BOWIE, 2 MILES EAST
 HV7461'OF WOODMORE AND 3 MILES SOUTH-SOUTHWEST OF THE JUNCTION OF
 HV7461'U.S. HIGHWAYS 301 AND 50, ON PROPERTY OF DOCTOR EDWIN M. SHORT,
 HV7461'WHOSE ADDRESS IS 4315 GALLATIN, HYATTSVILLE, MARYLAND.
 HV7461'
 HV7461'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV7461'STATE HIGHWAY 214 WHICH IS ABOUT 6 MILES NORTH OF UPPER MARLBORO,
 HV7461'GO WEST ON HIGHWAY 214 FOR 2.0 MILES TO THE JUNCTION WITH CHURCH
 HV7461'ROAD.  TURN RIGHT AND GO NORTH ON CHURCH ROAD FOR 1.7 MILES TO
 HV7461'THE JUNCTION WITH WOODMORE ROAD.  CONTINUE NORTH ON CHURCH ROAD
 HV7461'FOR 0.1 MILE TO A GRADED ROAD LEFT.  (TO REACH THE AZIMUTH MARK
 HV7461'FROM THIS POINT, CONTINUE NORTHERLY ON CHURCH ROAD FOR 1.6
 HV7461'MILES, JUST AFTER CROSSING A BRIDGE OVER U.S. HIGHWAY 50 AND THE
 HV7461'MARK ON THE LEFT.) TURN LEFT AND GO NORTHWEST ON GRADED ROAD
 HV7461'FOR 0.25 MILE TO A FARM HOUSE ON THE LEFT.  TURN LEFT, PASSING
 HV7461'BETWEEN THE HOUSE AND FARM BUILDINGS AND GO WESTERLY FOR 0.1
 HV7461'MILE TO A LARGE BARN.  CONTINUE WESTERLY ON TRACK ROAD FOR 0.05
 HV7461'MILE TO THE STATION.
 HV7461'
 HV7461'STATION MARK IS A STANDARD DISK, STAMPED CHURCH 1970, SET IN THE
 HV7461'TOP OF A ROUND CONCRETE POST, 14 INCHES IN DIAMETER, THAT IS 14
 HV7461'INCHES BELOW THE GROUND SURFACE.  IT IS 191.5 FEET WEST OF THE
 HV7461'SOUTHWEST CORNER OF THE BARN, 77.9 FEET WEST-NORTHWEST OF A
 HV7461'WITNESS POST AND 18.0 FEET NORTH OF A FENCE.  THE UNDERGROUND
 HV7461'MARK IS 44 INCHES BELOW THE GROUND SURFACE.
 HV7461'
 HV7461'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CHURCH NO 1 1970,
 HV7461'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7461'THAT PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 126.0 FEET
 HV7461'SOUTHWEST OF THE SOUTHWEST CORNER OF THE BARN, 4.6 FEET NORTH
 HV7461'OF THE FENCE, 1.8 FEET NORTH OF THE WITNESS POST AND ABOUT 1
 HV7461'FOOT LOWER THAN THE STATION.
 HV7461'
 HV7461'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CHURCH NO 2 1970,
 HV7461'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7461'THAT PROJECTS 2 INCHES ABOVE THE GROUND.  IT IS 5.2 FEET NORTH OF
 HV7461'THE FENCE AND ABOUT 1 FOOT LOWER THAN THE STATION.
 HV7461'
 HV7461'AZIMUTH MARK IS A STANDARD DISK, STAMPED CHURCH 1970, SET IN THE
 HV7461'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS
 HV7461'1 INCH ABOVE THE GROUND.  IT IS 306.0 FEET WEST OF THE CENTERLINE
 HV7461'OF CHURCH ROAD, 2.4 FEET EAST OF A WITNESS POST AND 1.0 FEET
 HV7461'NORTH OF A FENCE.
 HV7461'
 HV7461'REFERENCE MARK 1 TO REFERENCE 2 OBSTRUCTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6587 ***********************************************************************
 HV6587  DESIGNATION -  CHURCH 1908
 HV6587  PID         -  HV6587
 HV6587  STATE/COUNTY-  MD/ST MARYS
 HV6587  COUNTRY     -  US
 HV6587  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6587
 HV6587                         *CURRENT SURVEY CONTROL
 HV6587  ______________________________________________________________________
 HV6587* NAD 83(1993) POSITION- 38 09 30.23677(N) 076 25 42.17797(W)   ADJUSTED
 HV6587* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6587  ______________________________________________________________________
 HV6587  GEOID HEIGHT    -        -34.819 (meters)                     GEOID18
 HV6587  LAPLACE CORR    -         -6.01  (seconds)                    DEFLEC18
 HV6587  HORZ ORDER      -  THIRD
 HV6587
 HV6587.The horizontal coordinates were established by classical geodetic methods
 HV6587.and adjusted by the National Geodetic Survey in November 1994.
 HV6587
 HV6587.The orthometric height was scaled from a topographic map.
 HV6587
 HV6587.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6587.GEOID18 height accuracy estimate available here.
 HV6587
 HV6587.Click photographs - Photos may exist for this station.
 HV6587
 HV6587.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6587
 HV6587. The following values were computed from the NAD 83(1993) position.
 HV6587
 HV6587;                    North         East     Units Scale Factor Converg.
 HV6587;SPC MD       -    54,741.683   450,099.423   MT  1.00002765   +0 21 31.6
 HV6587;SPC MD       -   179,598.34  1,476,701.19   sFT  1.00002765   +0 21 31.6
 HV6587;UTM  18      - 4,224,353.833   374,858.935   MT  0.99979287   -0 52 57.4
 HV6587
 HV6587!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6587!SPC MD       -   1.00000535  x   1.00002765  =   1.00003300
 HV6587!UTM  18      -   1.00000535  x   0.99979287  =   0.99979822
 HV6587
 HV6587:                Primary Azimuth Mark                     Grid Az
 HV6587:SPC MD       -  INIGOES                                  277 34 26.6
 HV6587:UTM  18      -  INIGOES                                  278 48 55.6
 HV6587
 HV6587_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7485824353(NAD 83)
 HV6587
 HV6587|---------------------------------------------------------------------|
 HV6587| PID    Reference Object                     Distance      Geod. Az  |
 HV6587|                                                           dddmmss.s |
 HV6587| HV6590 GRASON 1908                         437.569 METERS 0344423.1 |
 HV6587| HV6589 INIGOES                             APPROX. 0.9 KM 2775558.2 |
 HV6587| HV6588 COTTAGE                             298.991 METERS 31444     |
 HV6587| HV6593 DUSKY                               475.299 METERS 3590324.5 |
 HV6587|---------------------------------------------------------------------|
 HV6587
 HV6587                          SUPERSEDED SURVEY CONTROL
 HV6587
 HV6587  NAD 83(1991)-  38 09 30.23582(N)    076 25 42.18099(W) AD(       ) 3
 HV6587  NAD 83(1986)-  38 09 30.23673(N)    076 25 42.19452(W) AD(       ) 3
 HV6587  NAD 27      -  38 09 29.84200(N)    076 25 43.41000(W) AD(       ) 3
 HV6587  USSD        -  38 09 30.22400(N)    076 25 43.12000(W) AD(       ) 3
 HV6587
 HV6587.Superseded values are not recommended for survey control.
 HV6587
 HV6587.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6587.See file dsdata.pdf to determine how the superseded data were derived.
 HV6587
 HV6587_MARKER: H = DRILL HOLE
 HV6587_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6587_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6587+STABILITY: SURFACE MOTION
 HV6587
 HV6587  HISTORY     - Date     Condition        Report By
 HV6587  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6587  HISTORY     - 1942     GOOD             CGS
 HV6587  HISTORY     - 1976     GOOD             MDDNR
 HV6587
 HV6587                          STATION DESCRIPTION
 HV6587
 HV6587'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6587'STATION IS ON THE SOUTHEASTERN SHORE OF ST. INIGOES CREEK, ABOUT
 HV6587'5/8 MILE E OF ST. MARYS RIVER, AND 1/4 MILE SW OF GRASON WHARF,
 HV6587'ABOUT 2 FEET ABOVE HIGH WATER, ON A ROUNDED POINT OF LAND
 HV6587'NEARLY SURROUNDED BY WATER, 13 YARDS SE OF SHORE, 14 YARDS S OF
 HV6587'SHORE, 24 YARDS WSW OF SHORE, AND 35 YARDS N OF INLET AND CEDAR
 HV6587'TREES.
 HV6587'
 HV6587'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6587'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6587'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6587'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6587'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL
 HV6587'IN BLAZE IN 4-INCH CEDAR TREE, 7.42 METERS (24.34 FEET), S 4 DEG
 HV6587'53 MIN W.  NEAR PEAK OF ROOF BETWEEN TWO CHIMNEYS ON RALEYS
 HV6587'HOUSE, 3/8 MILE, N 45 DEG 15 MIN W.  CHIMNEY OF HOUSE, 1/2 MILE,
 HV6587'N 05 DEG 18 MIN W.  LEFT CHIMNEY ON END OF HOUSE, 1-3/4 MILES,
 HV6587'N 08 DEG 32 MIN E.  NEAR PEAK OF ROOF OF GRASON WHARF HOUSE,
 HV6587'1/4 MILE, N 20 DEG 31 MIN E.  NEAR PEAK OF ROOF OF GRASONS
 HV6587'STABLE, 1/4 MILE, N 37 DEG 37 MIN E.  BETWEEN TWO CHIMNEYS ON
 HV6587'NEAR END OF GRASONS HOUSE, 1/4 MILE, N 43 DEG 50 MIN E.  NAIL
 HV6587'IN BLAZE IN 6-INCH CEDAR TREE, 12.52 METERS (41.1 FEET), S 81
 HV6587'DEG 49 MIN E.  NAIL IN BLAZE IN 5-INCH CEDAR TREE, 9.95 METERS
 HV6587'(32.64 FEET), S 33 DEG 53 MIN E.
 HV6587
 HV6587                          STATION RECOVERY (1942)
 HV6587
 HV6587'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6587'THE FOLLOWING DISCREPANCY WAS NOTED IN THE ORIGINAL DESCRIPTION--
 HV6587'
 HV6587'DELETE THE BLAZE IN THE 4-INCH CEDAR TREE, 6-INCH CEDAR TREE,
 HV6587'AND THE 5-INCH CEDAR TREE, SINCE THEY NO LONGER EXIST.
 HV6587'
 HV6587'THE STATION IS LOCATED ABOUT 4.3 MILES WNW FROM ST. INIGOES
 HV6587'POST OFFICE, AND ABOUT 0.75 MILE NE OF PRIESTS POINT, ON THE
 HV6587'SOUTHEASTERN SHORE OF ST. INIGOES CREEK.  IT IS ON A ROUNDED
 HV6587'POINT OF LAND NEARLY SURROUNDED BY WATER AND THE MARK IS 366 FEET
 HV6587'FROM THE SOUTHEASTERN TIP OF THE POINT, 45 FEET FROM THE SHORE
 HV6587'TO THE N, 101 FEET FROM THE SHORE TO THE S, AND ABOUT 2 FEET
 HV6587'ABOVE HIGH WATER.
 HV6587'
 HV6587'THE STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6587'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN
 HV6587'8-INCH SQUARE CONCRETE MONUMENT, 2 FEET LONG, WHICH PROJECTS ABOUT
 HV6587'2 INCHES ABOVE THE SURFACE OF THE GROUND.  THE LETTERS
 HV6587'M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK IN THE TOP OF THE
 HV6587'MONUMENT.  THE STATION IS IN GOOD CONDITION.
 HV6587
 HV6587                          STATION RECOVERY (1976)
 HV6587
 HV6587'RECOVERY NOTE BY MD DEPT OF NAT RES 1976 (GEH)
 HV6587'MSFC-USCS GOOD
 HV6587'
 HV6587'STA RECOVD. AS DESCRIBED.  MONUMENT IS EXPOSED ABOUT 3 IN AND
 HV6587'LOCATED ABOUT 60 FT S OF SHORE LINE 14 FT S OF CEDAR TREE, 60 FT W
 HV6587'OF EDGE OF LARGE POND AND 24 FT N OF 3 IN CEDAR TREE.  STA IS
 HV6587'ON U.S. GOVT. PROP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5943 ***********************************************************************
 HV5943  DESIGNATION -  CHURCH CREEK 1 EAST 1901
 HV5943  PID         -  HV5943
 HV5943  STATE/COUNTY-  MD/DORCHESTER
 HV5943  COUNTRY     -  US
 HV5943  USGS QUAD   -  CHURCH CREEK (2016)
 HV5943
 HV5943                         *CURRENT SURVEY CONTROL
 HV5943  ______________________________________________________________________
 HV5943* NAD 83(1991) POSITION- 38 31 25.95877(N) 076 10 34.17465(W)   ADJUSTED
 HV5943* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5943  ______________________________________________________________________
 HV5943  GEOID HEIGHT    -        -34.911 (meters)                     GEOID18
 HV5943  LAPLACE CORR    -         -4.86  (seconds)                    DEFLEC18
 HV5943  HORZ ORDER      -  THIRD
 HV5943
 HV5943.The horizontal coordinates were established by classical geodetic methods
 HV5943.and adjusted by the National Geodetic Survey in January 1992.
 HV5943
 HV5943.The orthometric height was scaled from a topographic map.
 HV5943
 HV5943.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5943.GEOID18 height accuracy estimate available here.
 HV5943
 HV5943.Click photographs - Photos may exist for this station.
 HV5943
 HV5943.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5943
 HV5943. The following values were computed from the NAD 83(1991) position.
 HV5943
 HV5943;                    North         East     Units Scale Factor Converg.
 HV5943;SPC MD       -    95,477.949   471,838.913   MT  0.99996860   +0 31 01.5
 HV5943;SPC MD       -   313,247.24  1,548,024.83   sFT  0.99996860   +0 31 01.5
 HV5943;UTM  18      - 4,264,598.391   397,473.617   MT  0.99972945   -0 43 57.4
 HV5943
 HV5943!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5943!SPC MD       -   1.00000551  x   0.99996860  =   0.99997411
 HV5943!UTM  18      -   1.00000551  x   0.99972945  =   0.99973496
 HV5943
 HV5943:                Primary Azimuth Mark                     Grid Az
 HV5943:SPC MD       -  KIRBY 1901                               339 31 13.9
 HV5943:UTM  18      -  KIRBY 1901                               340 46 12.8
 HV5943
 HV5943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9747364598(NAD 83)
 HV5943
 HV5943|---------------------------------------------------------------------|
 HV5943| PID    Reference Object                     Distance      Geod. Az  |
 HV5943|                                                           dddmmss.s |
 HV5943| HV5967 CHURCH CREEK 2 EAST 1901            APPROX. 0.6 KM 1715033.3 |
 HV5943| HV5938 CHURCH CREEK 1 WEST 1901            343.326 METERS 22027     |
 HV5943| HV5925 KIRBY 1901                          APPROX. 0.7 KM 3400215.4 |
 HV5943|---------------------------------------------------------------------|
 HV5943
 HV5943                          SUPERSEDED SURVEY CONTROL
 HV5943
 HV5943  NAD 83(1986)-  38 31 25.95630(N)    076 10 34.19057(W) AD(       ) 3
 HV5943  NAD 27      -  38 31 25.54900(N)    076 10 35.38000(W) AD(       ) 3
 HV5943  USSD        -  38 31 25.96300(N)    076 10 35.15600(W) AD(       ) 3
 HV5943
 HV5943.Superseded values are not recommended for survey control.
 HV5943
 HV5943.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5943.See file dsdata.pdf to determine how the superseded data were derived.
 HV5943
 HV5943
 HV5943  HISTORY     - Date     Condition        Report By
 HV5943  HISTORY     - 1901     MONUMENTED       CGS
 HV5943  HISTORY     - 1903     GOOD             CGS
 HV5943
 HV5943                          STATION DESCRIPTION
 HV5943
 HV5943'DESCRIBED BY COAST AND GEODETIC SURVEY 1903
 HV5943'IN THE SE CORNER OF A FIELD AT THE JUNCTION OF FISHING AND CHURCH
 HV5943'CREEKS, ON A LOW BANK NEAR N END OF ORCHARD AND SEPARATED FROM IT
 HV5943'BY A FENCE LINED WITH CEDAR AND OTHER TREES, 8.6 METERS (28 FEET)
 HV5943'FROM FENCE.  STATION MARK IS A CEDAR STUB.  A PLANK STUB WAS
 HV5943'PLACED AT HIGH-WATER LINE, 6 METERS (20 FEET) W OF STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5938 ***********************************************************************
 HV5938  DESIGNATION -  CHURCH CREEK 1 WEST 1901
 HV5938  PID         -  HV5938
 HV5938  STATE/COUNTY-  MD/DORCHESTER
 HV5938  COUNTRY     -  US
 HV5938  USGS QUAD   -  CHURCH CREEK (2016)
 HV5938
 HV5938                         *CURRENT SURVEY CONTROL
 HV5938  ______________________________________________________________________
 HV5938* NAD 83(1991) POSITION- 38 31 17.48558(N) 076 10 43.36948(W)   ADJUSTED
 HV5938* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5938  ______________________________________________________________________
 HV5938  GEOID HEIGHT    -        -34.908 (meters)                     GEOID18
 HV5938  LAPLACE CORR    -         -4.94  (seconds)                    DEFLEC18
 HV5938  HORZ ORDER      -  THIRD
 HV5938
 HV5938.The horizontal coordinates were established by classical geodetic methods
 HV5938.and adjusted by the National Geodetic Survey in January 1992.
 HV5938
 HV5938.The orthometric height was scaled from a topographic map.
 HV5938
 HV5938.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5938.GEOID18 height accuracy estimate available here.
 HV5938
 HV5938.Click photographs - Photos may exist for this station.
 HV5938
 HV5938.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5938
 HV5938. The following values were computed from the NAD 83(1991) position.
 HV5938
 HV5938;                    North         East     Units Scale Factor Converg.
 HV5938;SPC MD       -    95,214.689   471,618.550   MT  0.99996885   +0 30 55.7
 HV5938;SPC MD       -   312,383.53  1,547,301.86   sFT  0.99996885   +0 30 55.7
 HV5938;UTM  18      - 4,264,340.062   397,247.619   MT  0.99973002   -0 44 03.0
 HV5938
 HV5938!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5938!SPC MD       -   1.00000551  x   0.99996885  =   0.99997436
 HV5938!UTM  18      -   1.00000551  x   0.99973002  =   0.99973553
 HV5938
 HV5938:                Primary Azimuth Mark                     Grid Az
 HV5938:SPC MD       -  CHURCH CREEK 2 EAST 1901                 136 59 36.8
 HV5938:UTM  18      -  CHURCH CREEK 2 EAST 1901                 138 14 35.5
 HV5938
 HV5938_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9724764340(NAD 83)
 HV5938
 HV5938|---------------------------------------------------------------------|
 HV5938| PID    Reference Object                     Distance      Geod. Az  |
 HV5938|                                                           dddmmss.s |
 HV5938| HV5943 CHURCH CREEK 1 EAST 1901            343.326 METERS 04027     |
 HV5938| HV5967 CHURCH CREEK 2 EAST 1901            456.669 METERS 1373032.5 |
 HV5938| HV5935 CHURCH CREEK 2 WEST                 323.837 METERS 19248     |
 HV5938|---------------------------------------------------------------------|
 HV5938
 HV5938                          SUPERSEDED SURVEY CONTROL
 HV5938
 HV5938  NAD 83(1986)-  38 31 17.48312(N)    076 10 43.38540(W) AD(       ) 3
 HV5938  NAD 27      -  38 31 17.07600(N)    076 10 44.57400(W) AD(       ) 3
 HV5938  USSD        -  38 31 17.48800(N)    076 10 44.34800(W) AD(       ) 3
 HV5938
 HV5938.Superseded values are not recommended for survey control.
 HV5938
 HV5938.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5938.See file dsdata.pdf to determine how the superseded data were derived.
 HV5938
 HV5938
 HV5938  HISTORY     - Date     Condition        Report By
 HV5938  HISTORY     - 1901     MONUMENTED       CGS
 HV5938  HISTORY     - 1910     GOOD             CGS
 HV5938
 HV5938                          STATION DESCRIPTION
 HV5938
 HV5938'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV5938'ON THE WESTERN SHORE OF CHURCH CREEK, ABOUT 3/8 MILE S OF FISHING
 HV5938'CREEK, NEAR EDGE OF CULTIVATED LAND, ABOUT 2 FEET ABOVE HIGH
 HV5938'WATER, 3 YARDS S OF SHORE, 20 YARDS NW OF SHORE, AND 30 YARDS E OF
 HV5938'EXTREME END OF POINT.  STATION MARK IS NAIL IN STUB PROJECTING 2
 HV5938'INCHES ABOVE SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A
 HV5938'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5938'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV5938'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5938'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 14.60 METERS
 HV5938'(47.9 FEET) FROM STATION S 4 DEG 48 MIN W.  OTHER DISTANCES AND
 HV5938'BEARINGS ARE AS FOLLOWS--CHIMNEY ON NEAR END OF HOUSE, 200 YARDS,
 HV5938'S 46 DEG 55 MIN W.  CHIMNEY ON LEFT END OF HOUSE, 1/2 MILE, N 61
 HV5938'DEG 21 MIN W. RIGHT CHIMNEY OF LARGE HOUSE, 3/4 MILE, N 34 DEG 32
 HV5938'MIN W. CHIMNEY ON LEFT END OF 1 1/2-STORY HOUSE, 5/8 MILE, N 4
 HV5938'DEG 59 MIN W.  NEAR PEAK OF LEFT ONE OF TWO BARNS, 1 MILE, N 25
 HV5938'DEG 12 MIN E.  NEAR PEAK OF BARN, 1 MILE, N 40 DEG 6 MIN E.
 HV5938'CHIMNEY OF 1 1/2-STORY HOUSE, 1/2 MILE, S 50 DEG 2 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5967 ***********************************************************************
 HV5967  DESIGNATION -  CHURCH CREEK 2 EAST 1901
 HV5967  PID         -  HV5967
 HV5967  STATE/COUNTY-  MD/DORCHESTER
 HV5967  COUNTRY     -  US
 HV5967  USGS QUAD   -  CHURCH CREEK (2016)
 HV5967
 HV5967                         *CURRENT SURVEY CONTROL
 HV5967  ______________________________________________________________________
 HV5967* NAD 83(1991) POSITION- 38 31 06.56471(N) 076 10 30.63610(W)   ADJUSTED
 HV5967* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5967  ______________________________________________________________________
 HV5967  GEOID HEIGHT    -        -34.922 (meters)                     GEOID18
 HV5967  LAPLACE CORR    -         -4.87  (seconds)                    DEFLEC18
 HV5967  HORZ ORDER      -  THIRD
 HV5967
 HV5967.The horizontal coordinates were established by classical geodetic methods
 HV5967.and adjusted by the National Geodetic Survey in January 1992.
 HV5967
 HV5967.The orthometric height was scaled from a topographic map.
 HV5967
 HV5967.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5967.GEOID18 height accuracy estimate available here.
 HV5967
 HV5967.Click photographs - Photos may exist for this station.
 HV5967
 HV5967.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5967
 HV5967. The following values were computed from the NAD 83(1991) position.
 HV5967
 HV5967;                    North         East     Units Scale Factor Converg.
 HV5967;SPC MD       -    94,880.748   471,930.025   MT  0.99996918   +0 31 03.7
 HV5967;SPC MD       -   311,287.92  1,548,323.76   sFT  0.99996918   +0 31 03.7
 HV5967;UTM  18      - 4,263,999.489   397,551.665   MT  0.99972925   -0 43 54.9
 HV5967
 HV5967!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5967!SPC MD       -   1.00000536  x   0.99996918  =   0.99997454
 HV5967!UTM  18      -   1.00000536  x   0.99972925  =   0.99973461
 HV5967
 HV5967:                Primary Azimuth Mark                     Grid Az
 HV5967:SPC MD       -  CHURCH CREEK 3 EAST 1901                 187 54 24.9
 HV5967:UTM  18      -  CHURCH CREEK 3 EAST 1901                 189 09 23.5
 HV5967
 HV5967_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9755163999(NAD 83)
 HV5967
 HV5967|---------------------------------------------------------------------|
 HV5967| PID    Reference Object                     Distance      Geod. Az  |
 HV5967|                                                           dddmmss.s |
 HV5967| HV5964 CHURCH CREEK 3 EAST 1901            475.654 METERS 1882528.6 |
 HV5967| HV5935 CHURCH CREEK 2 WEST                 380.829 METERS 27309     |
 HV5967| HV5938 CHURCH CREEK 1 WEST 1901            456.669 METERS 3173040.5 |
 HV5967| HV5943 CHURCH CREEK 1 EAST 1901            APPROX. 0.6 KM 3515035.5 |
 HV5967|---------------------------------------------------------------------|
 HV5967
 HV5967                          SUPERSEDED SURVEY CONTROL
 HV5967
 HV5967  NAD 83(1986)-  38 31 06.56227(N)    076 10 30.65207(W) AD(       ) 3
 HV5967  NAD 27      -  38 31 06.15800(N)    076 10 31.84200(W) AD(       ) 3
 HV5967  USSD        -  38 31 06.57000(N)    076 10 31.61300(W) AD(       ) 3
 HV5967
 HV5967.Superseded values are not recommended for survey control.
 HV5967
 HV5967.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5967.See file dsdata.pdf to determine how the superseded data were derived.
 HV5967
 HV5967
 HV5967  HISTORY     - Date     Condition        Report By
 HV5967  HISTORY     - 1901     MONUMENTED       CGS
 HV5967  HISTORY     - 1908     GOOD             CGS
 HV5967
 HV5967                          STATION DESCRIPTION
 HV5967
 HV5967'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV5967'ON THE EASTERN SHORE OF CHURCH CREEK, ABOUT 3/4 MILE BELOW ITS
 HV5967'JUNCTION WITH FISHING CREEK, ON A MARSHY POINT A SHORT DISTANCE W
 HV5967'OF SMALL FARMHOUSE, 10 METERS (32.8 FEET) NNW FROM A PLANK STUB,
 HV5967'AND 9.5 METERS (31.2 FEET) FROM SMALL CHERRY TREE IN CORNER OF
 HV5967'YARD.  CENTER MARKED BY A STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5964 ***********************************************************************
 HV5964  DESIGNATION -  CHURCH CREEK 3 EAST 1901
 HV5964  PID         -  HV5964
 HV5964  STATE/COUNTY-  MD/DORCHESTER
 HV5964  COUNTRY     -  US
 HV5964  USGS QUAD   -  CHURCH CREEK (2016)
 HV5964
 HV5964                         *CURRENT SURVEY CONTROL
 HV5964  ______________________________________________________________________
 HV5964* NAD 83(1991) POSITION- 38 30 51.30542(N) 076 10 33.51257(W)   ADJUSTED
 HV5964* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5964  ______________________________________________________________________
 HV5964  GEOID HEIGHT    -        -34.927 (meters)                     GEOID18
 HV5964  LAPLACE CORR    -         -4.92  (seconds)                    DEFLEC18
 HV5964  HORZ ORDER      -  THIRD
 HV5964
 HV5964.The horizontal coordinates were established by classical geodetic methods
 HV5964.and adjusted by the National Geodetic Survey in January 1992.
 HV5964
 HV5964.The orthometric height was scaled from a topographic map.
 HV5964
 HV5964.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5964.GEOID18 height accuracy estimate available here.
 HV5964
 HV5964.Click photographs - Photos may exist for this station.
 HV5964
 HV5964.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5964
 HV5964. The following values were computed from the NAD 83(1991) position.
 HV5964
 HV5964;                    North         East     Units Scale Factor Converg.
 HV5964;SPC MD       -    94,409.631   471,864.594   MT  0.99996964   +0 31 01.9
 HV5964;SPC MD       -   309,742.26  1,548,109.09   sFT  0.99996964   +0 31 01.9
 HV5964;UTM  18      - 4,263,530.024   397,475.994   MT  0.99972944   -0 43 56.5
 HV5964
 HV5964!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5964!SPC MD       -   1.00000552  x   0.99996964  =   0.99997516
 HV5964!UTM  18      -   1.00000552  x   0.99972944  =   0.99973496
 HV5964
 HV5964:                Primary Azimuth Mark                     Grid Az
 HV5964:SPC MD       -  CHURCH CREEK 2 EAST 1901                 007 54 24.9
 HV5964:UTM  18      -  CHURCH CREEK 2 EAST 1901                 009 09 23.3
 HV5964
 HV5964_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9747563530(NAD 83)
 HV5964
 HV5964|---------------------------------------------------------------------|
 HV5964| PID    Reference Object                     Distance      Geod. Az  |
 HV5964|                                                           dddmmss.s |
 HV5964| HV5967 CHURCH CREEK 2 EAST 1901            475.654 METERS 0082526.8 |
 HV5964| HV5965 CHURCH CREEK 4 EAST 1901            244.623 METERS 18039     |
 HV5964| HV5955 CHURCH CREEK 3 WEST 1901            375.691 METERS 20705     |
 HV5964|---------------------------------------------------------------------|
 HV5964
 HV5964                          SUPERSEDED SURVEY CONTROL
 HV5964
 HV5964  NAD 83(1986)-  38 30 51.30308(N)    076 10 33.52855(W) AD(       ) 3
 HV5964  NAD 27      -  38 30 50.89800(N)    076 10 34.71700(W) AD(       ) 3
 HV5964  USSD        -  38 30 51.31200(N)    076 10 34.48500(W) AD(       ) 3
 HV5964
 HV5964.Superseded values are not recommended for survey control.
 HV5964
 HV5964.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5964.See file dsdata.pdf to determine how the superseded data were derived.
 HV5964
 HV5964
 HV5964  HISTORY     - Date     Condition        Report By
 HV5964  HISTORY     - 1901     MONUMENTED       CGS
 HV5964  HISTORY     - 1903     SEE DESCRIPTION  CGS
 HV5964
 HV5964                          STATION DESCRIPTION
 HV5964
 HV5964'DESCRIBED BY COAST AND GEODETIC SURVEY 1903
 HV5964'ON THE EASTERN SHORE OF CHURCH CREEK, ABOUT 1 MILE S OF ITS
 HV5964'CONFLUENCE WITH FISHING CREEK, ON S POINT OF COVE, 3 METERS FROM
 HV5964'EDGE OF LOW SOD BANK, 14.6 METERS (47.9 FEET) WNW FROM SMALL
 HV5964'BLAZED WHITE OAK TREE, AND 19.2 METERS (63 FEET) N BY W FROM A
 HV5964'CEDAR MARKED WITH A TRIANGLE.  CENTER PROBABLY MARKED WITH STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5955 ***********************************************************************
 HV5955  DESIGNATION -  CHURCH CREEK 3 WEST 1901
 HV5955  PID         -  HV5955
 HV5955  STATE/COUNTY-  MD/DORCHESTER
 HV5955  COUNTRY     -  US
 HV5955  USGS QUAD   -  CHURCH CREEK (2016)
 HV5955
 HV5955                         *CURRENT SURVEY CONTROL
 HV5955  ______________________________________________________________________
 HV5955* NAD 83(1991) POSITION- 38 30 40.45802(N) 076 10 40.57394(W)   ADJUSTED
 HV5955* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5955  ______________________________________________________________________
 HV5955  GEOID HEIGHT    -        -34.926 (meters)                     GEOID18
 HV5955  LAPLACE CORR    -         -5.00  (seconds)                    DEFLEC18
 HV5955  HORZ ORDER      -  THIRD
 HV5955
 HV5955.The horizontal coordinates were established by classical geodetic methods
 HV5955.and adjusted by the National Geodetic Survey in January 1992.
 HV5955
 HV5955.The orthometric height was scaled from a topographic map.
 HV5955
 HV5955.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5955.GEOID18 height accuracy estimate available here.
 HV5955
 HV5955.Click photographs - Photos may exist for this station.
 HV5955
 HV5955.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5955
 HV5955. The following values were computed from the NAD 83(1991) position.
 HV5955
 HV5955;                    North         East     Units Scale Factor Converg.
 HV5955;SPC MD       -    94,073.632   471,696.546   MT  0.99996997   +0 30 57.4
 HV5955;SPC MD       -   308,639.91  1,547,557.75   sFT  0.99996997   +0 30 57.4
 HV5955;UTM  18      - 4,263,197.849   397,300.700   MT  0.99972989   -0 44 00.7
 HV5955
 HV5955!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5955!SPC MD       -   1.00000552  x   0.99996997  =   0.99997549
 HV5955!UTM  18      -   1.00000552  x   0.99972989  =   0.99973541
 HV5955
 HV5955:                Primary Azimuth Mark                     Grid Az
 HV5955:SPC MD       -  CHURCH CREEK 2 WEST                      349 53 50.2
 HV5955:UTM  18      -  CHURCH CREEK 2 WEST                      351 08 48.3
 HV5955
 HV5955_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9730063197(NAD 83)
 HV5955
 HV5955|---------------------------------------------------------------------|
 HV5955| PID    Reference Object                     Distance      Geod. Az  |
 HV5955|                                                           dddmmss.s |
 HV5955| HV5964 CHURCH CREEK 3 EAST 1901            375.691 METERS 02705     |
 HV5955| HV5965 CHURCH CREEK 4 EAST 1901            190.811 METERS 06154     |
 HV5955| HV5966 CHURCH CREEK 4 WEST 1901            438.039 METERS 1562445.9 |
 HV5955| HV5935 CHURCH CREEK 2 WEST                 APPROX. 0.8 KM 3502447.6 |
 HV5955|---------------------------------------------------------------------|
 HV5955
 HV5955                          SUPERSEDED SURVEY CONTROL
 HV5955
 HV5955  NAD 83(1986)-  38 30 40.45574(N)    076 10 40.58990(W) AD(       ) 3
 HV5955  NAD 27      -  38 30 40.05300(N)    076 10 41.77600(W) AD(       ) 3
 HV5955  USSD        -  38 30 40.46600(N)    076 10 41.54100(W) AD(       ) 3
 HV5955
 HV5955.Superseded values are not recommended for survey control.
 HV5955
 HV5955.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5955.See file dsdata.pdf to determine how the superseded data were derived.
 HV5955
 HV5955
 HV5955  HISTORY     - Date     Condition        Report By
 HV5955  HISTORY     - 1901     MONUMENTED       CGS
 HV5955  HISTORY     - 1908     GOOD             CGS
 HV5955
 HV5955                          STATION DESCRIPTION
 HV5955
 HV5955'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV5955'ON W SIDE OF CHURCH CREEK, ON END OF WOODED POINT AT N SIDE OF
 HV5955'DEEP BIGHT 1-1/4 MILES S OF FISHING CREEK, ON LOW GROUND IN MIDST
 HV5955'OF CEDARS AND SALT-WATER BUSHES, 6.6 METERS (21.6 FEET) SE FROM
 HV5955'BLAZED PINE AND 12.2 METERS (40 FEET) NNE FROM A BLAZED CEDAR.
 HV5955'CENTER MARKED BY LOCUST STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5965 ***********************************************************************
 HV5965  DESIGNATION -  CHURCH CREEK 4 EAST 1901
 HV5965  PID         -  HV5965
 HV5965  STATE/COUNTY-  MD/DORCHESTER
 HV5965  COUNTRY     -  US
 HV5965  USGS QUAD   -  CHURCH CREEK (2016)
 HV5965
 HV5965                         *CURRENT SURVEY CONTROL
 HV5965  ______________________________________________________________________
 HV5965* NAD 83(1991) POSITION- 38 30 43.37266(N) 076 10 33.62642(W)   ADJUSTED
 HV5965* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5965  ______________________________________________________________________
 HV5965  GEOID HEIGHT    -        -34.930 (meters)                     GEOID18
 HV5965  LAPLACE CORR    -         -4.94  (seconds)                    DEFLEC18
 HV5965  HORZ ORDER      -  THIRD
 HV5965
 HV5965.The horizontal coordinates were established by classical geodetic methods
 HV5965.and adjusted by the National Geodetic Survey in January 1992.
 HV5965
 HV5965.The orthometric height was scaled from a topographic map.
 HV5965
 HV5965.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5965.GEOID18 height accuracy estimate available here.
 HV5965
 HV5965.Click photographs - Photos may exist for this station.
 HV5965
 HV5965.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5965
 HV5965. The following values were computed from the NAD 83(1991) position.
 HV5965
 HV5965;                    North         East     Units Scale Factor Converg.
 HV5965;SPC MD       -    94,165.016   471,864.044   MT  0.99996988   +0 31 01.8
 HV5965;SPC MD       -   308,939.72  1,548,107.28   sFT  0.99996988   +0 31 01.8
 HV5965;UTM  18      - 4,263,285.538   397,470.111   MT  0.99972946   -0 43 56.4
 HV5965
 HV5965!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5965!SPC MD       -   1.00000536  x   0.99996988  =   0.99997524
 HV5965!UTM  18      -   1.00000536  x   0.99972946  =   0.99973482
 HV5965
 HV5965:                Primary Azimuth Mark                     Grid Az
 HV5965:SPC MD       -  CHURCH CREEK 4 WEST 1901                 178 40 20.9
 HV5965:UTM  18      -  CHURCH CREEK 4 WEST 1901                 179 55 19.1
 HV5965
 HV5965_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9747063285(NAD 83)
 HV5965
 HV5965|---------------------------------------------------------------------|
 HV5965| PID    Reference Object                     Distance      Geod. Az  |
 HV5965|                                                           dddmmss.s |
 HV5965| HV5966 CHURCH CREEK 4 WEST 1901            491.366 METERS 1791122.7 |
 HV5965| HV5955 CHURCH CREEK 3 WEST 1901            190.811 METERS 24154     |
 HV5965|---------------------------------------------------------------------|
 HV5965
 HV5965                          SUPERSEDED SURVEY CONTROL
 HV5965
 HV5965  NAD 83(1986)-  38 30 43.37035(N)    076 10 33.64241(W) AD(       ) 3
 HV5965  NAD 27      -  38 30 42.96700(N)    076 10 34.83000(W) AD(       ) 3
 HV5965  USSD        -  38 30 43.38100(N)    076 10 34.59600(W) AD(       ) 3
 HV5965
 HV5965.Superseded values are not recommended for survey control.
 HV5965
 HV5965.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5965.See file dsdata.pdf to determine how the superseded data were derived.
 HV5965
 HV5965
 HV5965  HISTORY     - Date     Condition        Report By
 HV5965  HISTORY     - 1901     MONUMENTED       CGS
 HV5965  HISTORY     - 1908     GOOD             CGS
 HV5965
 HV5965                          STATION DESCRIPTION
 HV5965
 HV5965'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV5965'ON EASTERN SHORE OF CHURCH CREEK, ABOUT 1-1/4 MILES FROM ITS
 HV5965'CONFLUENCE WITH FISHING CREEK, ON MARSHY POINT OPPOSITE DEEP
 HV5965'BIGHT IN WESTERN SHORE, 1.5 METERS (4.9 FEET) FROM SHORE, WHICH IS
 HV5965'LOW AND SUBJECT TO OVER FLOW AT HIGH WATER.  IT IS 7.3 METERS (24
 HV5965'FEET) WNW FROM STUB ON EDGE OF MARSH.  CENTER MARKED WITH LOCUST STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5966 ***********************************************************************
 HV5966  DESIGNATION -  CHURCH CREEK 4 WEST 1901
 HV5966  PID         -  HV5966
 HV5966  STATE/COUNTY-  MD/DORCHESTER
 HV5966  COUNTRY     -  US
 HV5966  USGS QUAD   -  CHURCH CREEK (2016)
 HV5966
 HV5966                         *CURRENT SURVEY CONTROL
 HV5966  ______________________________________________________________________
 HV5966* NAD 83(1991) POSITION- 38 30 27.43895(N) 076 10 33.33960(W)   ADJUSTED
 HV5966* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5966  ______________________________________________________________________
 HV5966  GEOID HEIGHT    -        -34.937 (meters)                     GEOID18
 HV5966  LAPLACE CORR    -         -4.98  (seconds)                    DEFLEC18
 HV5966  HORZ ORDER      -  THIRD
 HV5966
 HV5966.The horizontal coordinates were established by classical geodetic methods
 HV5966.and adjusted by the National Geodetic Survey in January 1992.
 HV5966
 HV5966.The orthometric height was scaled from a topographic map.
 HV5966
 HV5966.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5966.GEOID18 height accuracy estimate available here.
 HV5966
 HV5966.Click photographs - Photos may exist for this station.
 HV5966
 HV5966.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5966
 HV5966. The following values were computed from the NAD 83(1991) position.
 HV5966
 HV5966;                    North         East     Units Scale Factor Converg.
 HV5966;SPC MD       -    93,673.797   471,875.427   MT  0.99997037   +0 31 02.0
 HV5966;SPC MD       -   307,328.12  1,548,144.63   sFT  0.99997037   +0 31 02.0
 HV5966;UTM  18      - 4,262,794.305   397,470.780   MT  0.99972946   -0 43 56.0
 HV5966
 HV5966!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5966!SPC MD       -   1.00000536  x   0.99997037  =   0.99997573
 HV5966!UTM  18      -   1.00000536  x   0.99972946  =   0.99973482
 HV5966
 HV5966:                Primary Azimuth Mark                     Grid Az
 HV5966:SPC MD       -  CHURCH CREEK 3 WEST 1901                 335 53 48.4
 HV5966:UTM  18      -  CHURCH CREEK 3 WEST 1901                 337 08 46.4
 HV5966
 HV5966_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9747062794(NAD 83)
 HV5966
 HV5966|---------------------------------------------------------------------|
 HV5966| PID    Reference Object                     Distance      Geod. Az  |
 HV5966|                                                           dddmmss.s |
 HV5966| HV5955 CHURCH CREEK 3 WEST 1901            438.039 METERS 3362450.4 |
 HV5966| HV5965 CHURCH CREEK 4 EAST 1901            491.366 METERS 3591122.9 |
 HV5966|---------------------------------------------------------------------|
 HV5966
 HV5966                          SUPERSEDED SURVEY CONTROL
 HV5966
 HV5966  NAD 83(1986)-  38 30 27.43673(N)    076 10 33.35561(W) AD(       ) 3
 HV5966  NAD 27      -  38 30 27.03300(N)    076 10 34.53900(W) AD(       ) 3
 HV5966  USSD        -  38 30 27.44800(N)    076 10 34.30100(W) AD(       ) 3
 HV5966
 HV5966.Superseded values are not recommended for survey control.
 HV5966
 HV5966.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5966.See file dsdata.pdf to determine how the superseded data were derived.
 HV5966
 HV5966
 HV5966  HISTORY     - Date     Condition        Report By
 HV5966  HISTORY     - 1901     MONUMENTED       CGS
 HV5966  HISTORY     - 1908     GOOD             CGS
 HV5966
 HV5966                          STATION DESCRIPTION
 HV5966
 HV5966'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV5966'ON THE WESTERN SHORE OF CHURCH CREEK, ON SECOND SMALL POINT BELOW
 HV5966'MILTON WHARF, NEAR HIGH-WATER LINE IN SALT-WATER BUSHES, 13.1
 HV5966'METERS (43 FEET) SSE FROM LARGEST OF THE TWO CEDARS ON END OF
 HV5966'POINT.  CENTER MARKED WITH LOCUST STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1434 ***********************************************************************
 HV1434  DESIGNATION -  CHURCH STEP
 HV1434  PID         -  HV1434
 HV1434  STATE/COUNTY-  MD/MONTGOMERY
 HV1434  COUNTRY     -  US
 HV1434  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1434
 HV1434                         *CURRENT SURVEY CONTROL
 HV1434  ______________________________________________________________________
 HV1434* NAD 83(1986) POSITION- 38 59 07.     (N) 076 59 54.     (W)   SCALED
 HV1434* NAVD 88 ORTHO HEIGHT -    66.466 (meters)      218.06  (feet) ADJUSTED
 HV1434  ______________________________________________________________________
 HV1434  GEOID HEIGHT    -        -32.021 (meters)                     GEOID18
 HV1434  DYNAMIC HEIGHT  -         66.431 (meters)      217.95  (feet) COMP
 HV1434  MODELED GRAVITY -    980,095.3   (mgal)                       NAVD 88
 HV1434
 HV1434  VERT ORDER      -  SECOND    CLASS I
 HV1434
 HV1434.The horizontal coordinates were scaled from a map and have
 HV1434.an estimated accuracy of +/- 6 seconds.
 HV1434
 HV1434.The orthometric height was determined by differential leveling and
 HV1434.adjusted by the NATIONAL GEODETIC SURVEY
 HV1434.in June 1991.
 HV1434
 HV1434.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1434.GEOID18 height accuracy estimate available here.
 HV1434
 HV1434.Click photographs - Photos may exist for this station.
 HV1434
 HV1434.The dynamic height is computed by dividing the NAVD 88
 HV1434.geopotential number by the normal gravity value computed on the
 HV1434.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1434.degrees latitude (g = 980.6199 gals.).
 HV1434
 HV1434.The modeled gravity was interpolated from observed gravity values.
 HV1434
 HV1434;                    North         East    Units  Estimated Accuracy
 HV1434;SPC MD       -   146,370.      400,140.      MT  (+/- 180 meters Scaled)
 HV1434
 HV1434_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ269170(NAD 83)
 HV1434
 HV1434                          SUPERSEDED SURVEY CONTROL
 HV1434
 HV1434  NGVD 29 (11/26/84)   66.682  (m)          218.77   (f) ADJUSTED    2 1
 HV1434
 HV1434.Superseded values are not recommended for survey control.
 HV1434
 HV1434.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1434.See file dsdata.pdf to determine how the superseded data were derived.
 HV1434
 HV1434_MARKER: Z = SEE DESCRIPTION
 HV1434_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1434_SP_SET: STEP
 HV1434_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1434_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1434+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2004
 HV1434
 HV1434  HISTORY     - Date     Condition        Report By
 HV1434  HISTORY     - UNK      MONUMENTED       CGS
 HV1434  HISTORY     - 1951     GOOD             CGS
 HV1434  HISTORY     - 20040320 GOOD             GEOCAC
 HV1434
 HV1434                          STATION DESCRIPTION
 HV1434
 HV1434'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 HV1434'AT TAKOMA PARK.
 HV1434'AT TAKOMA PARK, MONTGOMERY COUNTY, IN THE NORTH ANGLE OF THE
 HV1434'INTERSECTION OF CARROLL AND FLOWER AVENUE, AT THE ENTRANCE TO
 HV1434'SLIGO CHURCH, AND ON THE EXTREME OUTER EAST CORNER OF THE LONG
 HV1434'CURVED BOTOM STEP.  AN UNMARKED POINT, THE SURFACE OF THE TOP
 HV1434'OF THE STEP AT THE CORNER.
 HV1434
 HV1434                          STATION RECOVERY (2004)
 HV1434
 HV1434'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV1434'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4826 ***********************************************************************
 JV4826  DESIGNATION -  CHURCHVILLE
 JV4826  PID         -  JV4826
 JV4826  STATE/COUNTY-  MD/HARFORD
 JV4826  COUNTRY     -  US
 JV4826  USGS QUAD   -  BEL AIR (2016)
 JV4826
 JV4826                         *CURRENT SURVEY CONTROL
 JV4826  ______________________________________________________________________
 JV4826* NAD 83(2011) POSITION- 39 33 55.43543(N) 076 15 06.78610(W)   ADJUSTED
 JV4826* NAD 83(2011) ELLIP HT-    96.443 (meters)        (06/27/12)   ADJUSTED
 JV4826* NAD 83(2011) EPOCH   -  2010.00
 JV4826* NAVD 88 ORTHO HEIGHT -   129.395 (meters)      424.52  (feet) ADJUSTED
 JV4826  ______________________________________________________________________
 JV4826  GEOID HEIGHT    -        -32.880 (meters)                     GEOID18
 JV4826  NAD 83(2011) X  -  1,170,126.822 (meters)                     COMP
 JV4826  NAD 83(2011) Y  - -4,782,595.158 (meters)                     COMP
 JV4826  NAD 83(2011) Z  -  4,040,965.031 (meters)                     COMP
 JV4826  LAPLACE CORR    -         -2.68  (seconds)                    DEFLEC18
 JV4826  DYNAMIC HEIGHT  -        129.331 (meters)      424.31  (feet) COMP
 JV4826  MODELED GRAVITY -    980,127.8   (mgal)                       NAVD 88
 JV4826
 JV4826  VERT ORDER      -  FIRST     CLASS II
 JV4826
 JV4826  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV4826  Standards:
 JV4826         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV4826            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV4826  -------------------------------------------------------------------
 JV4826  NETWORK    1.42   3.70           0.55   0.60   1.89      0.24462869
 JV4826  -------------------------------------------------------------------
 JV4826  Click here for local accuracies and other accuracy information.
 JV4826
 JV4826.The horizontal coordinates were established by GPS observations
 JV4826.and adjusted by the National Geodetic Survey in June 2012.
 JV4826
 JV4826.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV4826.been affixed to the stable North American tectonic plate. See 
 JV4826.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV4826
 JV4826.The horizontal coordinates are valid at the epoch date displayed above
 JV4826.which is a decimal equivalence of Year/Month/Day.
 JV4826
 JV4826.The orthometric height was determined by differential leveling and
 JV4826.adjusted by the NATIONAL GEODETIC SURVEY
 JV4826.in June 1991.
 JV4826
 JV4826.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4826.GEOID18 height accuracy estimate available here.
 JV4826
 JV4826.Click photographs - Photos may exist for this station.
 JV4826
 JV4826.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV4826
 JV4826.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4826
 JV4826.The ellipsoidal height was determined by GPS observations
 JV4826.and is referenced to NAD 83.
 JV4826
 JV4826.The dynamic height is computed by dividing the NAVD 88
 JV4826.geopotential number by the normal gravity value computed on the
 JV4826.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV4826.degrees latitude (g = 980.6199 gals.).
 JV4826
 JV4826.The modeled gravity was interpolated from observed gravity values.
 JV4826
 JV4826. The following values were computed from the NAD 83(2011) position.
 JV4826
 JV4826;                    North         East     Units Scale Factor Converg.
 JV4826;SPC MD       -   211,039.386   464,288.290   MT  1.00002223   +0 28 10.4
 JV4826;SPC MD       -   692,385.05  1,523,252.50   sFT  1.00002223   +0 28 10.4
 JV4826;UTM  18      - 4,380,270.912   392,463.469   MT  0.99974237   -0 47 50.9
 JV4826
 JV4826!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4826!SPC MD       -   0.99998487  x   1.00002223  =   1.00000710
 JV4826!UTM  18      -   0.99998487  x   0.99974237  =   0.99972724
 JV4826
 JV4826:                Primary Azimuth Mark                     Grid Az
 JV4826:SPC MD       -  CHURCHVILLE AZ MK                        320 42 58.9
 JV4826:UTM  18      -  CHURCHVILLE AZ MK                        321 59 00.2
 JV4826
 JV4826_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9246380270(NAD 83)
 JV4826
 JV4826|---------------------------------------------------------------------|
 JV4826| PID    Reference Object                     Distance      Geod. Az  |
 JV4826|                                                           dddmmss.s |
 JV4826| CB1085 CHURCHVILLE RM 1                     30.294 METERS 12748     |
 JV4826| JV4797 STEPNEY STONEY FOREST FIRE TWR      APPROX. 5.5 KM 1641639.0 |
 JV4826| CB1086 CHURCHVILLE RM 2                     27.127 METERS 18614     |
 JV4826| JV4825 AIRWAY BEACON 62                    APPROX. 7.4 KM 2912021.0 |
 JV4826| JV6354 CHURCHVILLE AZ MK                                  3211109.3 |
 JV4826|---------------------------------------------------------------------|
 JV4826
 JV4826                          SUPERSEDED SURVEY CONTROL
 JV4826
 JV4826  NAD 83(2007)-  39 33 55.43549(N)    076 15 06.78685(W) AD(2002.00) 0
 JV4826  ELLIP H (02/10/07)   96.459  (m)                       GP(2002.00)    
 JV4826  ELLIP H (09/18/02)   96.493  (m)                       GP(       ) 4 2
 JV4826  NAD 83(1991)-  39 33 55.43487(N)    076 15 06.78669(W) AD(       ) 1
 JV4826  ELLIP H (01/27/92)   96.481  (m)                       GP(       ) 4 1
 JV4826  NAD 83(1986)-  39 33 55.42755(N)    076 15 06.79328(W) AD(       ) 1
 JV4826  NAD 27      -  39 33 55.03700(N)    076 15 07.95100(W) AD(       ) 1
 JV4826  NGVD 29             129.63   (m)          425.3    (f) LEVELING    3  
 JV4826  NGVD 29 (07/19/86)  129.8    (m)          426.     (f) VERT ANG       
 JV4826
 JV4826.Superseded values are not recommended for survey control.
 JV4826
 JV4826.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4826.See file dsdata.pdf to determine how the superseded data were derived.
 JV4826
 JV4826_MARKER: DS = TRIANGULATION STATION DISK
 JV4826_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4826_STAMPING: CHURCHVILLE 1945
 JV4826_MARK LOGO: CGS
 JV4826_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4826_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4826+STABILITY: SURFACE MOTION
 JV4826_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4826+SATELLITE: SATELLITE OBSERVATIONS - September 04, 1989
 JV4826
 JV4826  HISTORY     - Date     Condition        Report By
 JV4826  HISTORY     - 1945     MONUMENTED       CGS
 JV4826  HISTORY     - 1945     GOOD             CGS
 JV4826  HISTORY     - 1962     GOOD             MDDT
 JV4826  HISTORY     - 19890904 GOOD             RDA
 JV4826
 JV4826                          STATION DESCRIPTION
 JV4826
 JV4826'DESCRIBED BY COAST AND GEODETIC SURVEY 1945 (LGS)
 JV4826'STATION IS 0.4 MILE NORTH OF THE VILLAGE OF CHURCHVILLE, ON THE
 JV4826'PROPERTY OF P.B. HARLAN WHO LIVES ON THE EAST SIDE OF THE ROAD TO
 JV4826'DUBLIN.  STATION MARK IS ABOUT 60 YDS. NE OF MR. HARLANS HOUSE, 65
 JV4826'FT. NE OF NE CORNER OF A CORN HOUSE, 16 FT. EAST OF NE CORNER OF A
 JV4826'CHICKEN HOUSE, AND 13 FT. NORTH OF RAIL FENCE BETWEEN FIELD AND
 JV4826'BARNYARD, IN FIELD.
 JV4826'
 JV4826'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV4826'DISKS SET IN CONCRETE.
 JV4826'
 JV4826'REFERENCE MARK 1 IS SE OF STATION, AT FENCE LINE BETWEEN BARNYARD
 JV4826'AND GARDEN.  REFERENCE MARK 2 IS SOUTH OF STATION IN NE ANGLE OF A
 JV4826'FENCE AND THE EAST SIDE OF CORN HOUSE.  AZIMUTH MARK IS ABOUT 0.2
 JV4826'MILE NW OF STATION, 28 FT. EAST OF CENTERLINE OF OILED ROAD TO
 JV4826'DUBLIN, NEAR TOP OF GRADE AT A CUT, AND BETWEEN TWO CEDAR TREES.
 JV4826
 JV4826                          STATION RECOVERY (1945)
 JV4826
 JV4826'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945
 JV4826'RECOVERED IN GOOD CONDITION.
 JV4826
 JV4826                          STATION RECOVERY (1962)
 JV4826
 JV4826'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1962
 JV4826'ALL MARKS FOUND IN GOOD CONDITION AS DESCRIBED.  R.M. 2 FOUND 2
 JV4826'INCHES BELOW SURFACE OF GROUND.
 JV4826
 JV4826                          STATION RECOVERY (1989)
 JV4826
 JV4826'RECOVERY NOTE BY RINKER DETWILER AND ASSOCIATES 1989
 JV4826'THE STATION IS LOCATED IN EAST CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV4826'0.4 MILE NORTH OF THE VILLAGE OF CHURCHVILLE.  TO REACH THE STATION
 JV4826'FROM THE INTERSECTION OF STATE HIGHWAY 136 AND STATE HIGHWAY 22 IN
 JV4826'THE VILLAGE OF CHURCHVILLE PROCEED NORTH ALONG HIGHWAY 136 0.35 MILES
 JV4826'TO ITS INTERSECTION WITH A PRIVATE FARM ROAD.  TURN RIGHT AND PROCEED
 JV4826'EAST NORTHEAST ALONG PRIVATE FARM ROAD 0.25 MILES TO THE STATION ON
 JV4826'THE LEFT ON THE NORTH SIDE OF CORN BIN.  THE STATION IS A STANDARD
 JV4826'U.S. COAST AND GEODETIC SURVEY DISC SET IN CONCRETE ABOUT 6 INCHES
 JV4826'ABOVE GROUND AND IS STAMPED CHURCHVILLE 1945.  THE STATION IS 64.0
 JV4826'FEET SOUTHWEST OF THE WEST END OF A BARN, 30.4 FEET WEST OF THE WEST
 JV4826'IRON GATE POST, AND 4.0 FEET NORTH OF THE CORN BIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6354 ***********************************************************************
 JV6354  DESIGNATION -  CHURCHVILLE AZ MK
 JV6354  PID         -  JV6354
 JV6354  STATE/COUNTY-  MD/HARFORD
 JV6354  COUNTRY     -  US
 JV6354  USGS QUAD   -  BEL AIR (2016)
 JV6354
 JV6354                         *CURRENT SURVEY CONTROL
 JV6354  ______________________________________________________________________
 JV6354* NAD 83(1986) POSITION- 39 34 02.     (N) 076 15 13.     (W)   SCALED
 JV6354* NAVD 88 ORTHO HEIGHT -   125.534 (meters)      411.86  (feet) ADJUSTED
 JV6354  ______________________________________________________________________
 JV6354  GEOID HEIGHT    -        -32.875 (meters)                     GEOID18
 JV6354  DYNAMIC HEIGHT  -        125.472 (meters)      411.65  (feet) COMP
 JV6354  MODELED GRAVITY -    980,127.8   (mgal)                       NAVD 88
 JV6354
 JV6354  VERT ORDER      -  FIRST     CLASS II
 JV6354
 JV6354.The horizontal coordinates were scaled from a map and have
 JV6354.an estimated accuracy of +/- 6 seconds.
 JV6354
 JV6354.The orthometric height was determined by differential leveling and
 JV6354.adjusted by the NATIONAL GEODETIC SURVEY
 JV6354.in June 1991.
 JV6354
 JV6354.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6354.GEOID18 height accuracy estimate available here.
 JV6354
 JV6354.Click photographs - Photos may exist for this station.
 JV6354
 JV6354.The dynamic height is computed by dividing the NAVD 88
 JV6354.geopotential number by the normal gravity value computed on the
 JV6354.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6354.degrees latitude (g = 980.6199 gals.).
 JV6354
 JV6354.The modeled gravity was interpolated from observed gravity values.
 JV6354
 JV6354;                    North         East    Units  Estimated Accuracy
 JV6354;SPC MD       -   211,240.      464,140.      MT  (+/- 180 meters Scaled)
 JV6354
 JV6354_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ923804(NAD 83)
 JV6354
 JV6354                          SUPERSEDED SURVEY CONTROL
 JV6354
 JV6354.No superseded survey control is available for this station.
 JV6354
 JV6354_MARKER: DR = REFERENCE MARK DISK
 JV6354_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6354_STAMPING: CHURCHVILLE 1945
 JV6354_MARK LOGO: CGS
 JV6354_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6354+STABILITY: SURFACE MOTION
 JV6354_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6354+SATELLITE: SATELLITE OBSERVATIONS - September 04, 1989
 JV6354
 JV6354  HISTORY     - Date     Condition        Report By
 JV6354  HISTORY     - 1945     MONUMENTED       CGS
 JV6354  HISTORY     - 19890904 GOOD             RDA
 JV6354
 JV6354                          STATION DESCRIPTION
 JV6354
 JV6354'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6354'THE STATION IS LOCATED IN EAST CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6354'0.4 MILE NORTH OF THE VILLAGE OF CHURCHVILLE.  TO REACH THE STATION
 JV6354'FROM THE INTERSECTION OF STATE HIGHWAY 136 AND STATE HIGHWAY 22 IN
 JV6354'THE VILLAGE OF CHURCHVILLE PROCEED NORTH ALONG HIGHWAY 136 0.35 MILES
 JV6354'TO ITS INTERSECTION WITH A PRIVATE FARM ROAD.  TURN RIGHT AND PROCEED
 JV6354'EAST NORTHEAST ALONG PRIVATE FARM ROAD 0.25 MILES TO THE STATION ON
 JV6354'THE LEFT ON THE NORTH SIDE OF CORN BIN.  TO REACH THE AZIMUTH MARK
 JV6354'FROM THE STATION PROCEED WEST ALONG PRIVATE DRIVE 0.25 MILES TO ITS
 JV6354'INTERSECTION WITH HIGHWAY 136.  TURN RIGHT AND PROCEED NORTH ALONG
 JV6354'HIGHWAY 136 0.16 MILE TO THE MARK ON THE RIGHT.  THE AZIMUTH MARK IS
 JV6354'A STANDARD U.S. COAST AND GEODECTIC AZIMUTH DISC SET IN CONCRETE
 JV6354'ABOUT 1 INCH ABOVE GROUND STAMPED CHURCHVILLE 1945.  THE MARK IS 12.0
 JV6354'FEET SOUTH OF A 24 INCH CEDAR TREE, 261.0 FEET NORTH OF A 24 INCH
 JV6354'CEDAR TREE, AND APPROXIMATELY 25.0 FEET EAST OF THE CENTERLINE OF
 JV6354'HIGHWAY 136.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0569 ***********************************************************************
 JV0569  DESIGNATION -  CITY
 JV0569  PID         -  JV0569
 JV0569  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0569  COUNTRY     -  US
 JV0569  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0569
 JV0569                         *CURRENT SURVEY CONTROL
 JV0569  ______________________________________________________________________
 JV0569* NAD 83(1986) POSITION- 39 16 08.     (N) 076 35 41.     (W)   SCALED
 JV0569* NAVD 88 ORTHO HEIGHT -     9.447 (meters)       30.99  (feet) ADJUSTED
 JV0569  ______________________________________________________________________
 JV0569  GEOID HEIGHT    -        -32.808 (meters)                     GEOID18
 JV0569  DYNAMIC HEIGHT  -          9.442 (meters)       30.98  (feet) COMP
 JV0569  MODELED GRAVITY -    980,101.0   (mgal)                       NAVD 88
 JV0569
 JV0569  VERT ORDER      -  FIRST     CLASS I
 JV0569
 JV0569.The horizontal coordinates were scaled from a map and have
 JV0569.an estimated accuracy of +/- 6 seconds.
 JV0569
 JV0569.The orthometric height was determined by differential leveling and
 JV0569.adjusted by the NATIONAL GEODETIC SURVEY
 JV0569.in June 1991.
 JV0569
 JV0569.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0569.GEOID18 height accuracy estimate available here.
 JV0569
 JV0569.Click photographs - Photos may exist for this station.
 JV0569
 JV0569.The dynamic height is computed by dividing the NAVD 88
 JV0569.geopotential number by the normal gravity value computed on the
 JV0569.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0569.degrees latitude (g = 980.6199 gals.).
 JV0569
 JV0569.The modeled gravity was interpolated from observed gravity values.
 JV0569
 JV0569;                    North         East    Units  Estimated Accuracy
 JV0569;SPC MD       -   177,930.      434,970.      MT  (+/- 180 meters Scaled)
 JV0569
 JV0569_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ624478(NAD 83)
 JV0569
 JV0569                          SUPERSEDED SURVEY CONTROL
 JV0569
 JV0569  NGVD 29 (11/26/84)    9.686  (m)           31.78   (f) ADJUSTED    1 1
 JV0569
 JV0569.Superseded values are not recommended for survey control.
 JV0569
 JV0569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0569.See file dsdata.pdf to determine how the superseded data were derived.
 JV0569
 JV0569_MARKER: DB = BENCH MARK DISK
 JV0569_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0569_SP_SET: BUILDING
 JV0569_STAMPING: CITY 1933
 JV0569_MARK LOGO: CGS
 JV0569_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0569
 JV0569  HISTORY     - Date     Condition        Report By
 JV0569  HISTORY     - 1933     MONUMENTED       CGS
 JV0569  HISTORY     - 1971     GOOD             NGS
 JV0569  HISTORY     - 1976     GOOD             NGS
 JV0569  HISTORY     - 19971027 MARK NOT FOUND   USPSQD
 JV0569
 JV0569                          STATION DESCRIPTION
 JV0569
 JV0569'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0569'AT BALTIMORE.
 JV0569'AT BALTIMORE, ON FORT AVENUE, AT SCHOOL 76, IN THE NORTH WALL
 JV0569'OF THE BUILDING, 7 FEET WEST OF THE CENTER OF THE NORTH ENTRANCE,
 JV0569'75 FEET SOUTH OF THE CENTER LINE OF FORT AVENUE, AND 4 FEET
 JV0569'ABOVE THE PAVEMENT.  A STANDARD DISK, STAMPED CITY 1933 AND
 JV0569'SET VERTICALLY.
 JV0569
 JV0569                          STATION RECOVERY (1976)
 JV0569
 JV0569'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
 JV0569'RECOVERED IN GOOD CONDITION.
 JV0569
 JV0569                          STATION RECOVERY (1997)
 JV0569
 JV0569'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0569'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7335 ***********************************************************************
 HV7335  DESIGNATION -  CITY
 HV7335  PID         -  HV7335
 HV7335  STATE/COUNTY-  MD/CHARLES
 HV7335  COUNTRY     -  US
 HV7335  USGS QUAD   -  BENEDICT (2016)
 HV7335
 HV7335                         *CURRENT SURVEY CONTROL
 HV7335  ______________________________________________________________________
 HV7335* NAD 83(1993) POSITION- 38 30 51.05372(N) 076 40 24.77668(W)   ADJUSTED
 HV7335* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7335  ______________________________________________________________________
 HV7335  GEOID HEIGHT    -        -33.692 (meters)                     GEOID18
 HV7335  LAPLACE CORR    -         -3.79  (seconds)                    DEFLEC18
 HV7335  HORZ ORDER      -  SECOND
 HV7335
 HV7335.The horizontal coordinates were established by classical geodetic methods
 HV7335.and adjusted by the National Geodetic Survey in November 1994.
 HV7335
 HV7335.The orthometric height was scaled from a topographic map.
 HV7335
 HV7335.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7335.GEOID18 height accuracy estimate available here.
 HV7335
 HV7335.Click photographs - Photos may exist for this station.
 HV7335
 HV7335.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7335
 HV7335. The following values were computed from the NAD 83(1993) position.
 HV7335
 HV7335;                    North         East     Units Scale Factor Converg.
 HV7335;SPC MD       -    94,128.428   428,470.708   MT  0.99996965   +0 12 17.6
 HV7335;SPC MD       -   308,819.68  1,405,740.98   sFT  0.99996965   +0 12 17.6
 HV7335;UTM  18      - 4,264,194.168   354,093.990   MT  0.99986217   -1 02 32.3
 HV7335
 HV7335!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7335!SPC MD       -   1.00000517  x   0.99996965  =   0.99997482
 HV7335!UTM  18      -   1.00000517  x   0.99986217  =   0.99986734
 HV7335
 HV7335:                Primary Azimuth Mark                     Grid Az
 HV7335:SPC MD       -  HALLOWING                                128 26 36.8
 HV7335:UTM  18      -  HALLOWING                                129 41 26.7
 HV7335
 HV7335_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5409364194(NAD 83)
 HV7335
 HV7335|---------------------------------------------------------------------|
 HV7335| PID    Reference Object                     Distance      Geod. Az  |
 HV7335|                                                           dddmmss.s |
 HV7335| CX2612 CITY RM 1                             9.078 METERS 10453     |
 HV7335| HV7338 HALLOWING                           APPROX. 0.9 KM 1283854.4 |
 HV7335| CX2613 CITY RM 2                             9.187 METERS 19641     |
 HV7335| HV7333 BENEDICT CATHOLIC CHURCH CROSS      466.328 METERS 2713728.2 |
 HV7335|---------------------------------------------------------------------|
 HV7335
 HV7335                          SUPERSEDED SURVEY CONTROL
 HV7335
 HV7335  NAD 83(1991)-  38 30 51.05368(N)    076 40 24.77800(W) AD(       ) 2
 HV7335  NAD 83(1986)-  38 30 51.05267(N)    076 40 24.79209(W) AD(       ) 2
 HV7335  NAD 27      -  38 30 50.61683(N)    076 40 25.93484(W) AD(       ) 2
 HV7335  USSD        -  38 30 50.96700(N)    076 40 25.68700(W) AD(       ) 3
 HV7335
 HV7335.Superseded values are not recommended for survey control.
 HV7335
 HV7335.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7335.See file dsdata.pdf to determine how the superseded data were derived.
 HV7335
 HV7335_MARKER: H = DRILL HOLE
 HV7335_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7335
 HV7335  HISTORY     - Date     Condition        Report By
 HV7335  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7335  HISTORY     - 1943     GOOD             CGS
 HV7335  HISTORY     - 1960     GOOD             CGS
 HV7335
 HV7335                          STATION DESCRIPTION
 HV7335
 HV7335'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7335'STATION IS ON THE WESTERN SHORE OF PATUXENT RIVER, ON TOWN POINT,
 HV7335'ABOUT 1/4 MILE NNE OF BENEDICT STEAMBOAT WHARF.  STATION IS ON
 HV7335'GRAVEL AND SHELL POINT, ABOUT 4 FEET ABOVE HIGH WATER, 12 YARDS
 HV7335'NW OF SHORE, 63 YARDS WSW OF A SHANTY, ABOUT 100 YARDS WSW OF
 HV7335'EXTREME END OF POINT, AND 11 YARDS SE OF A SLOUGH.
 HV7335'
 HV7335'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV7335'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV7335'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV7335'M.S.F.C. AND U.S.C.S.  ARE COUNTERSUNK IN TOP OF POST. DISTANCES
 HV7335'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV7335'AS FOLLOWS--LEFT TANGENT OF PEAK OF WHARF-HOUSE ROOF, 1/4 MILE, S
 HV7335'30 DEG 13 MIN W.  CENTER OF ROOF OF SQUARE HOUSE, 1/2 MILE, S 33
 HV7335'DEG 15 MIN W.  CANNING-HOUSE STACK, 1/4 MILE, S 44 DEG 1 MIN W.
 HV7335'NEAREST IVY-COVERED CHIMNEY OF OLD HOUSE, 1/8 MILE, S 78 DEG 53
 HV7335'MIN W.  LEFT SQUARE CHIMNEY OF HOUSE, 1-3/4 MILES, N 14 DEG 21
 HV7335'MIN E.  NEAR END OF PEAK OF ROOF OF HUGGINS HOUSE, 1-1/2 MILES N
 HV7335'49 DEG 33 MIN E.  NEAR CORNER OF SHANTY, 63 YARDS, N 69 DEG 23
 HV7335'MIN E. RIGHT CHIMNEY OF GOURLEYS HOUSE, 3/4 MILE, S 72 DEG 1 MIN
 HV7335'E. CHIMNEY OF OLD BUILDING BEHIND WHARF, 3/4 MILE, S 59 DEG 20 MIN E.
 HV7335
 HV7335                          STATION RECOVERY (1943)
 HV7335
 HV7335'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7335'CITY (MSFC) IS LOCATED ABOUT 1/4 MILE NORTH NORTHEAST OF THE FERRY
 HV7335'WHARF IN THE VILLAGE OF BENEDICT.  IT IS ABOUT 4 FEET ABOVE HIGH
 HV7335'WATER MARK, 36 FEET NORTHWEST OF THE SHORE, 300 FEET WEST
 HV7335'SOUTHWEST OF THE EXTREME END OF THE POINT, 33 FEET SOUTHEAST OF A
 HV7335'SLOUGH AND 36.6 FEET EAST NORTHEAST OF A POWERLINE POLE NUMBERED
 HV7335'124.  IT IS A STANDARD MARYLAND SHELL FISH SURVEY MONUMENT,
 HV7335'COUNTERSUNK ON THE TOP ARE THE LETTERS MSFS AND USCS.  IT PROJECTS
 HV7335'8 INCHES.
 HV7335'
 HV7335'REFERENCE MARKS ARE SET AS DESCRIBED.
 HV7335'
 HV7335'REFERENCE MARK NO. 1 IS EAST OF THE STATION.  IT IS A 4-INCH TERRA
 HV7335'COTTA PIPE FILLED WITH CONCRETE.  THE DISK IS SET FLUSH IN THE
 HV7335'CENTER AND STAMPED CITY NO. 1 1943.  IT PROJECTS 8 INCHES.
 HV7335'
 HV7335'REFERENCE MARK NO. 2 IS SOUTH OF THE STATION.  IT IS A 4-INCH
 HV7335'TERRA COTTA PIPE FILLED WITH CONCRETE.  THE DISK IS SET FLUSH IN
 HV7335'THE CENTER AND STAMPED CITY NO. 2 1943 AND PROJECTS 8 INCHES.
 HV7335'
 HV7335'THE AZIMUTH MARK FOR THIS STATION IS TRIANGULATION STATION
 HV7335'HALLOWING (MSFC).
 HV7335'
 HV7335'TO REACH CITY (MSFC) FROM BENEDICT PROCEED ON FOOT OR BY BOAT
 HV7335'NORTH NORTHEAST TO THE POINT AND THE STATION AS DESCRIBED.
 HV7335'
 HV7335'A 4-FOOT STAND WILL SEE A 100-FOOT LIGHT AT STATION DOWELL.
 HV7335'
 HV7335'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT PRINCE 2.
 HV7335'
 HV7335'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT BUENA 2.
 HV7335'
 HV7335'A 4-FOOT STAND WILL SEE A 100-FOOT LIGHT AT SIMS.
 HV7335'
 HV7335'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT HALLOWING (MSFC).
 HV7335'
 HV7335'HEIGHT OF LIGHT ABOVE STATION MARK 1.2 METERS.
 HV7335
 HV7335                          STATION RECOVERY (1960)
 HV7335
 HV7335'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV7335'STATION MARK AND REFERENCE MARK NO.2 WERE RECOVERED IN GOOD
 HV7335'CONDITION.  REFERENCE MARK NO.1 HAS BEEN DESTROYED BY EROSION.  A
 HV7335'NEW DESCRIPTION FOLLOWS--STATION IS LOCATED ON THE WEST SHORE OF
 HV7335'THE PATUXENT RIVER NEAR THE VILLAGE OF BENEDICT.  ON A SMALL
 HV7335'POINT OF LAND FORMED BY THE RIVER AND A SLOUGH.  ABOUT 100 FT. S
 HV7335'OF THE BRIDGE OVER THE RIVER, 10 FT. W OF THE MHWL OF RIVER AND 30
 HV7335'FT. S OF MHWL OF SLOUGH.
 HV7335'
 HV7335'STATION IS A MONUMENT OF THE MARYLAND SHELL FISH SURVEY PROJECTING
 HV7335'ABOUT 3 INCHES.
 HV7335'
 HV7335'REFERENCE MARK NO.2 IS ON THE MHWL OF THE RIVER.  A STANDARD
 HV7335'REFERENCE MARK DISK STAMPED CITY NO.2 1943 SET IN THE TOP OF A
 HV7335'TERRA COTTA PIPE FILLED WITH CEMENT PROJECTING 1 FOOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5716 ***********************************************************************
 JV5716  DESIGNATION -  CITY
 JV5716  PID         -  JV5716
 JV5716  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5716  COUNTRY     -  US
 JV5716  USGS QUAD   -  CURTIS BAY (2016)
 JV5716
 JV5716                         *CURRENT SURVEY CONTROL
 JV5716  ______________________________________________________________________
 JV5716* NAD 83(1991) POSITION- 39 14 49.13351(N) 076 34 32.09072(W)   ADJUSTED
 JV5716* NAVD 88 ORTHO HEIGHT -     9.45  (+/-2cm)       31.0   (feet) VERTCON3
 JV5716  ______________________________________________________________________
 JV5716  GEOID HEIGHT    -        -32.882 (meters)                     GEOID18
 JV5716  LAPLACE CORR    -         -4.27  (seconds)                    DEFLEC18
 JV5716  HORZ ORDER      -  THIRD
 JV5716  VERT ORDER      -  THIRD ? (See Below)
 JV5716
 JV5716.The horizontal coordinates were established by classical geodetic methods
 JV5716.and adjusted by the National Geodetic Survey in January 1992.
 JV5716
 JV5716.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5716.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5716
 JV5716.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5716.GEOID18 height accuracy estimate available here.
 JV5716
 JV5716.The vertical order pertains to the NGVD 29 superseded value.
 JV5716
 JV5716.Click photographs - Photos may exist for this station.
 JV5716
 JV5716.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5716
 JV5716. The following values were computed from the NAD 83(1991) position.
 JV5716
 JV5716;                    North         East     Units Scale Factor Converg.
 JV5716;SPC MD       -   175,509.631   436,636.550   MT  0.99997078   +0 15 59.0
 JV5716;SPC MD       -   575,817.85  1,432,531.75   sFT  0.99997078   +0 15 59.0
 JV5716;UTM  18      - 4,345,367.833   364,039.825   MT  0.99982760   -0 59 49.1
 JV5716
 JV5716!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5716!SPC MD       -   1.00000368  x   0.99997078  =   0.99997446
 JV5716!UTM  18      -   1.00000368  x   0.99982760  =   0.99983128
 JV5716
 JV5716:                Primary Azimuth Mark                     Grid Az
 JV5716:SPC MD       -  FORT                                     347 29 05.1
 JV5716:UTM  18      -  FORT                                     348 44 53.2
 JV5716
 JV5716_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6403945367(NAD 83)
 JV5716
 JV5716|---------------------------------------------------------------------|
 JV5716| PID    Reference Object                     Distance      Geod. Az  |
 JV5716|                                                           dddmmss.s |
 JV5716| JV5529 PENN RR CO TANK                     APPROX. 2.4 KM 0131623.3 |
 JV5716| JV5476 BAUGHS CHEMICAL CO TANK             APPROX. 1.8 KM 0164653.0 |
 JV5716| JV5283 HUMPHREY CREEK TANK                 APPROX. 7.5 KM 1022542.8 |
 JV5716| JV5717 MARINE HB 1915                       55.134 METERS 12147     |
 JV5716| JV5545 CHESAPEAKE PAPER BOARD CO TANK      APPROX. 3.3 KM 3194321.5 |
 JV5716| CB1635 PIPE IRON                             6.240 METERS 32040     |
 JV5716| JV5537 PROCTOR AND GAMBLE CO TANK          APPROX. 3.4 KM 3341828.2 |
 JV5716| JV5532 FORT                                APPROX. 1.6 KM 3474504.1 |
 JV5716| CB1628 PILE COPPER PLUG                     15.288 METERS 34822     |
 JV5716|---------------------------------------------------------------------|
 JV5716
 JV5716                          SUPERSEDED SURVEY CONTROL
 JV5716
 JV5716  NAD 83(1986)-  39 14 49.12984(N)    076 34 32.09989(W) AD(       ) 3
 JV5716  NAD 27      -  39 14 48.74100(N)    076 34 33.22600(W) AD(       ) 3
 JV5716  USSD        -  39 14 49.10600(N)    076 34 33.06200(W) AD(       ) 3
 JV5716  NGVD 29               9.69   (m)           31.8    (f) LEVELING    3  
 JV5716
 JV5716.Superseded values are not recommended for survey control.
 JV5716
 JV5716.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5716.See file dsdata.pdf to determine how the superseded data were derived.
 JV5716
 JV5716_MARKER: DS = TRIANGULATION STATION DISK
 JV5716_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5716_MARK LOGO: CGS
 JV5716_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5716+STABILITY: SURFACE MOTION
 JV5716
 JV5716  HISTORY     - Date     Condition        Report By
 JV5716  HISTORY     - 1915     MONUMENTED       CGS
 JV5716  HISTORY     - 1934     GOOD             CGS
 JV5716  HISTORY     - 1966     MARK NOT FOUND   USGS
 JV5716
 JV5716                          STATION DESCRIPTION
 JV5716
 JV5716'DESCRIBED BY COAST AND GEODETIC SURVEY 1915 (EWE)
 JV5716'ON THE SW SHORE OF PATAPSCO RIVER, OPPOSITE LAZARETTO POINT, ON
 JV5716'PROPERTY BELONGING TO BALTIMORE CITY, ABOUT 1/8 MILE W OF ELLIOTT
 JV5716'MACHINE COMPANY WHARF, AND ON THE FILL DIRECTLY BACK OF A LONG
 JV5716'WOODEN BULKHEAD WHICH EXTENDS ALONG THE SHORE ABOUT 40 FEET BACK
 JV5716'FROM THE BULKHEAD.  STATION MARKED BY A STANDARD BRONZE DISK
 JV5716'STATION MARK SET IN CEMENT ABOUT 2 INCHES BELOW THE SURFACE OF
 JV5716'THE GROUND.  A COPPER PLUG SURROUNDED BY A TRIANGLE OF NAILS WAS
 JV5716'SET IN THE TOP OF A PILE AT SLIGHT ANGLE IN BULKHEAD.  IT IS
 JV5716'15.29 METERS (50.16 FEET) FROM THE STATION N 11 DEG
 JV5716'38 MIN W.  A 1-INCH IRON PIPE WAS DRIVEN IN THE GROUND AND
 JV5716'LEFT PROJECTING ABOUT 8 INCHES.  IT IS 6.24 METERS (20.47
 JV5716'FEET) FROM THE STATION N 39 DEG 20 MIN W.  THE HARBOR
 JV5716'BOARD STATION MARINE IS 55.13 METERS (180.87 FEET) FROM THE
 JV5716'STATION S 58 DEG 13 MIN E.
 JV5716
 JV5716                          STATION RECOVERY (1934)
 JV5716
 JV5716'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5716'STATION AND REFERENCE MARKS FOUND UNDISTURBED BUT SLIGHTLY
 JV5716'DISINTEGRATED.
 JV5716'
 JV5716'INSUFFICIENT DESCRIPTION GIVEN.  THE SHORE LINE HAS ERODED
 JV5716'CONSIDERABLY AND THE BULKHEAD GIVEN AS A REFERENCE MARK HAS BEEN
 JV5716'DESTROYED.  AT THE PRESENT TIME THE STATION IS ONLY 25 FEET FROM
 JV5716'THE HIGH-WATER LINE AND PROJECTS ABOVE THE GROUND ABOUT 1-1/2
 JV5716'FEET.
 JV5716
 JV5716                          STATION RECOVERY (1966)
 JV5716
 JV5716'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1966 (MKW)
 JV5716'STATION HAS BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7992 ***********************************************************************
 AJ7992  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7992  DESIGNATION -  CITY
 AJ7992  PID         -  AJ7992
 AJ7992  STATE/COUNTY-  MD/CECIL
 AJ7992  COUNTRY     -  US
 AJ7992  USGS QUAD   -  ELKTON (2016)
 AJ7992
 AJ7992                         *CURRENT SURVEY CONTROL
 AJ7992  ______________________________________________________________________
 AJ7992* NAD 83(2011) POSITION- 39 32 00.11812(N) 075 48 25.05631(W)   ADJUSTED
 AJ7992* NAD 83(2011) ELLIP HT-   -16.428 (meters)        (06/27/12)   ADJUSTED
 AJ7992* NAD 83(2011) EPOCH   -  2010.00
 AJ7992* NAVD 88 ORTHO HEIGHT -    16.882 (meters)       55.39  (feet) ADJUSTED
 AJ7992  ______________________________________________________________________
 AJ7992  GEOID HEIGHT    -        -33.308 (meters)                     GEOID18
 AJ7992  NAD 83(2011) X  -  1,207,763.865 (meters)                     COMP
 AJ7992  NAD 83(2011) Y  - -4,775,475.600 (meters)                     COMP
 AJ7992  NAD 83(2011) Z  -  4,038,150.850 (meters)                     COMP
 AJ7992  LAPLACE CORR    -         -0.22  (seconds)                    DEFLEC18
 AJ7992  DYNAMIC HEIGHT  -         16.873 (meters)       55.36  (feet) COMP
 AJ7992  MODELED GRAVITY -    980,133.4   (mgal)                       NAVD 88
 AJ7992
 AJ7992  VERT ORDER      -  SECOND    CLASS I
 AJ7992
 AJ7992  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7992  Standards:
 AJ7992         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7992            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7992  -------------------------------------------------------------------
 AJ7992  NETWORK    0.18   0.37           0.08   0.07   0.19      0.02448383
 AJ7992  -------------------------------------------------------------------
 AJ7992  Click here for local accuracies and other accuracy information.
 AJ7992
 AJ7992.The horizontal coordinates were established by GPS observations
 AJ7992.and adjusted by the National Geodetic Survey in June 2012.
 AJ7992
 AJ7992.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7992.been affixed to the stable North American tectonic plate. See 
 AJ7992.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7992
 AJ7992.The horizontal coordinates are valid at the epoch date displayed above
 AJ7992.which is a decimal equivalence of Year/Month/Day.
 AJ7992
 AJ7992.The orthometric height was determined by differential leveling and
 AJ7992.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7992.in December 2003.
 AJ7992
 AJ7992.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7992.GEOID18 height accuracy estimate available here.
 AJ7992
 AJ7992.Click photographs - Photos may exist for this station.
 AJ7992
 AJ7992.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7992
 AJ7992.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7992
 AJ7992.The ellipsoidal height was determined by GPS observations
 AJ7992.and is referenced to NAD 83.
 AJ7992
 AJ7992.The dynamic height is computed by dividing the NAVD 88
 AJ7992.geopotential number by the normal gravity value computed on the
 AJ7992.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7992.degrees latitude (g = 980.6199 gals.).
 AJ7992
 AJ7992.The modeled gravity was interpolated from observed gravity values.
 AJ7992
 AJ7992. The following values were computed from the NAD 83(2011) position.
 AJ7992
 AJ7992;                    North         East     Units Scale Factor Converg.
 AJ7992;SPC MD       -   207,889.673   502,567.045   MT  1.00001565   +0 44 55.7
 AJ7992;SPC MD       -   682,051.37  1,648,838.71   sFT  1.00001565   +0 44 55.7
 AJ7992;UTM  18      - 4,376,278.379   430,651.113   MT  0.99965921   -0 30 49.2
 AJ7992
 AJ7992!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7992!SPC MD       -   1.00000258  x   1.00001565  =   1.00001823
 AJ7992!UTM  18      -   1.00000258  x   0.99965921  =   0.99966179
 AJ7992
 AJ7992_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3065176278(NAD 83)
 AJ7992
 AJ7992                          SUPERSEDED SURVEY CONTROL
 AJ7992
 AJ7992  NAD 83(2007)-  39 32 00.11821(N)    075 48 25.05673(W) AD(2002.00) 0
 AJ7992  ELLIP H (02/10/07)  -16.375  (m)                       GP(2002.00)    
 AJ7992  NAD 83(1991)-  39 32 00.11827(N)    075 48 25.05689(W) AD(       ) A
 AJ7992  ELLIP H (02/12/02)  -16.368  (m)                       GP(       ) 4 1
 AJ7992  NAVD 88              16.88   (m)           55.4    (f) LEVELING    3  
 AJ7992  NAVD 88 (02/12/02)   16.9    (m)  GEOID99  model used  GPS OBS        
 AJ7992
 AJ7992.Superseded values are not recommended for survey control.
 AJ7992
 AJ7992.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7992.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7992
 AJ7992_MARKER: DD = SURVEY DISK
 AJ7992_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7992_STAMPING: CITY 2000
 AJ7992_MARK LOGO: MDSHA
 AJ7992_PROJECTION: FLUSH
 AJ7992_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ7992_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7992+STABILITY: SURFACE MOTION
 AJ7992_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7992+SATELLITE: SATELLITE OBSERVATIONS - October 15, 2025
 AJ7992
 AJ7992  HISTORY     - Date     Condition        Report By
 AJ7992  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ7992  HISTORY     - 20010130 GOOD             MDSHA
 AJ7992  HISTORY     - 20020626 GOOD             MDSHA
 AJ7992  HISTORY     - 20051007 GOOD             JMTMD
 AJ7992  HISTORY     - 20051120 GOOD             JMT
 AJ7992  HISTORY     - 20090309 GOOD             GWS
 AJ7992  HISTORY     - 20140922 GOOD             INDIV
 AJ7992  HISTORY     - 20251015 GOOD             PROFLN
 AJ7992
 AJ7992                          STATION DESCRIPTION
 AJ7992
 AJ7992'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7992'THE STATION IS LOCATED ABOUT 5.1 MILES (8.2 KM) SOUTHEAST OF ELKTON,
 AJ7992'9.5 MILES (15.3 KM) NORTHEAST OF CECILTON, AND 18.7 MILES (30.1 KM)
 AJ7992'EAST OF ABERDEEN.  TO REACH THE STATION FROM THE INTERSECTION OF
 AJ7992'U.S.HIGHWAY 40 AND STATE HIGHWAY 213 IN ELKTON, GO SOUTH ALONG STATE
 AJ7992'HIGHWAY 213 FOR 4.7 MILES (7.6 KM) TO STATE HIGHWAY 285.  TURN LEFT
 AJ7992'AND GO EAST THEN SOUTH FOR 0.3 MILES (0.5 KM) TO THE INTERSECTION WITH
 AJ7992'STATE HIGHWAY 284 AND THE STATION ON THE LEFT.  NOTE= THE STATION CAN
 AJ7992'ALSO BE REACHED BY GOING NORTH ALONG STATE HIGHWAY 213 FOR 0.2 MILES
 AJ7992'(0.3 KM) FROM THE NORTH END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE
 AJ7992'AND DELAWARE CANAL TO STATE HIGHWAY 285.  THE STATION IS A STANDARD
 AJ7992'MARYLAND STATE HIGHWAY SURVEY DISK SET IN THE TOP OF A 12 INCH ROUND
 AJ7992'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT
 AJ7992'IS 17.7 FEET (5.4 M) WEST OF A CARSONITE WITNESS POST, 62.5 FEET (19.1
 AJ7992'M) NORTHEAST OF THE CENTERLINE OF STATE HIGHWAY 284, 70.7 FEET (21.5
 AJ7992'M) SOUTHEAST OF A METAL FLAG POLE, 104.5 FEET (31.9 M) SOUTH OF AN
 AJ7992'ELECTRIC METER WHICH IS NEXT TO GUY POLE NUMBER 41285-35720, AND 148.0
 AJ7992'FEET (45.1 M) EAST-SOUTHEAST OF THE JUNCTION OF THE TWO ROADS.
 AJ7992
 AJ7992                          STATION RECOVERY (2001)
 AJ7992
 AJ7992'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ7992'RECOVERED AS DESCRIBED.
 AJ7992
 AJ7992                          STATION RECOVERY (2002)
 AJ7992
 AJ7992'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 AJ7992'RECOVERED AS DESCRIBED.
 AJ7992
 AJ7992                          STATION RECOVERY (2005)
 AJ7992
 AJ7992'RECOVERY NOTE BY JMT ENGINEERING 2005 (BRH)
 AJ7992'RECOVERED AS DESCRIBED
 AJ7992
 AJ7992                          STATION RECOVERY (2005)
 AJ7992
 AJ7992'RECOVERY NOTE BY JOHNSON MIRMIRAN AND THOMPSON PA 2005
 AJ7992'RECOVERED IN GOOD CONDITION.
 AJ7992
 AJ7992                          STATION RECOVERY (2009)
 AJ7992
 AJ7992'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (JMS)
 AJ7992'RECOVERED AS DESCRIBED.
 AJ7992
 AJ7992                          STATION RECOVERY (2014)
 AJ7992
 AJ7992'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 AJ7992'RECOVERED AS DESCRIBED
 AJ7992'DESCRIPTION IS ADEQUATE
 AJ7992
 AJ7992                          STATION RECOVERY (2025)
 AJ7992
 AJ7992'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 AJ7992'THE MARK IS 64 FT (19.5 M) NORTHEAST RADIAL TO THE CURVE FROM HIGHWAY
 AJ7992'284 AKA HEMPHILL ST, 49 FT (14.9 M) EASTERLY FROM POLE 41270-35716,
 AJ7992'ABOUT PERPENDICULAR TO THE POWER LINE, 4 FT (1.2 M) WEST OF THE
 AJ7992'PLANTED EDGE OF THE FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3862 ***********************************************************************
 JU3862  DESIGNATION -  CITY 1898
 JU3862  PID         -  JU3862
 JU3862  STATE/COUNTY-  MD/CECIL
 JU3862  COUNTRY     -  US
 JU3862  USGS QUAD   -  ELKTON (2016)
 JU3862
 JU3862                         *CURRENT SURVEY CONTROL
 JU3862  ______________________________________________________________________
 JU3862* NAD 83(1991) POSITION- 39 31 50.86773(N) 075 49 25.92370(W)   ADJUSTED
 JU3862* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3862  ______________________________________________________________________
 JU3862  GEOID HEIGHT    -        -33.311 (meters)                     GEOID18
 JU3862  LAPLACE CORR    -         -0.53  (seconds)                    DEFLEC18
 JU3862  HORZ ORDER      -  THIRD
 JU3862
 JU3862.The horizontal coordinates were established by classical geodetic methods
 JU3862.and adjusted by the National Geodetic Survey in January 1992.
 JU3862
 JU3862.The orthometric height was scaled from a topographic map.
 JU3862
 JU3862.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3862.GEOID18 height accuracy estimate available here.
 JU3862
 JU3862.Click photographs - Photos may exist for this station.
 JU3862
 JU3862.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3862
 JU3862. The following values were computed from the NAD 83(1991) position.
 JU3862
 JU3862;                    North         East     Units Scale Factor Converg.
 JU3862;SPC MD       -   207,585.544   501,117.234   MT  1.00001513   +0 44 17.5
 JU3862;SPC MD       -   681,053.57  1,644,082.13   sFT  1.00001513   +0 44 17.5
 JU3862;UTM  18      - 4,376,006.365   429,195.470   MT  0.99966172   -0 31 27.9
 JU3862
 JU3862!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3862!SPC MD       -   1.00000526  x   1.00001513  =   1.00002039
 JU3862!UTM  18      -   1.00000526  x   0.99966172  =   0.99966698
 JU3862
 JU3862:                Primary Azimuth Mark                     Grid Az
 JU3862:SPC MD       -  NO 1898                                  278 52 18.1
 JU3862:UTM  18      -  NO 1898                                  280 08 03.5
 JU3862
 JU3862_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2919576006(NAD 83)
 JU3862
 JU3862|---------------------------------------------------------------------|
 JU3862| PID    Reference Object                     Distance      Geod. Az  |
 JU3862|                                                           dddmmss.s |
 JU3862| JU3885 PEAKE                               348.214 METERS 03903     |
 JU3862| JU3884 NO 1898                             APPROX. 0.6 KM 2793635.6 |
 JU3862| JU3860 DUMB                                333.123 METERS 32745     |
 JU3862|---------------------------------------------------------------------|
 JU3862
 JU3862                          SUPERSEDED SURVEY CONTROL
 JU3862
 JU3862  NAD 83(1986)-  39 31 50.85890(N)    075 49 25.92856(W) AD(       ) 3
 JU3862  NAD 27      -  39 31 50.46200(N)    075 49 27.16900(W) AD(       ) 3
 JU3862  USSD        -  39 31 50.84200(N)    075 49 26.99500(W) AD(       ) 3
 JU3862
 JU3862.Superseded values are not recommended for survey control.
 JU3862
 JU3862.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3862.See file dsdata.pdf to determine how the superseded data were derived.
 JU3862
 JU3862_MARKER: N = NAIL
 JU3862_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3862_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3862+STABILITY: SURFACE MOTION
 JU3862
 JU3862  HISTORY     - Date     Condition        Report By
 JU3862  HISTORY     - 1898     MONUMENTED       CGS
 JU3862
 JU3862                          STATION DESCRIPTION
 JU3862
 JU3862'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (JBB)
 JU3862'ON S SIDE OF BACK CREEK, ON A SMALL BLUFF BANK, 3/4 MILE W OF
 JU3862'CHESAPEAKE CITY, AND OPPOSITE MOUTH OF SMALL CREEK.  MARKED BY A
 JU3862'BOX 3 BY 3 INCHES AND 3 FEET DEEP FILLED WITH CEMENT, A NAIL IN
 JU3862'TOP MARKING CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5519 ***********************************************************************
 JV5519  DESIGNATION -  CITY HOSPITAL
 JV5519  PID         -  JV5519
 JV5519  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5519  COUNTRY     -  US
 JV5519  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5519
 JV5519                         *CURRENT SURVEY CONTROL
 JV5519  ______________________________________________________________________
 JV5519* NAD 83(1991) POSITION- 39 17 26.82535(N) 076 32 52.70666(W)   ADJUSTED
 JV5519* NAVD 88 ORTHO HEIGHT -    44.    (meters)      144.    (feet) SCALED
 JV5519  ______________________________________________________________________
 JV5519  GEOID HEIGHT    -        -32.876 (meters)                     GEOID18
 JV5519  LAPLACE CORR    -         -3.88  (seconds)                    DEFLEC18
 JV5519  HORZ ORDER      -  FIRST
 JV5519
 JV5519.The horizontal coordinates were established by classical geodetic methods
 JV5519.and adjusted by the National Geodetic Survey in January 1992.
 JV5519
 JV5519.The orthometric height was scaled from a topographic map.
 JV5519
 JV5519.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5519.GEOID18 height accuracy estimate available here.
 JV5519
 JV5519.Click photographs - Photos may exist for this station.
 JV5519
 JV5519.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5519
 JV5519. The following values were computed from the NAD 83(1991) position.
 JV5519
 JV5519;                    North         East     Units Scale Factor Converg.
 JV5519;SPC MD       -   180,383.950   438,995.505   MT  0.99997602   +0 17 01.3
 JV5519;SPC MD       -   591,809.68  1,440,271.09   sFT  0.99997602   +0 17 01.3
 JV5519;UTM  18      - 4,350,188.218   366,505.337   MT  0.99981942   -0 58 49.5
 JV5519
 JV5519!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5519!SPC MD       -   0.99999829  x   0.99997602  =   0.99997431
 JV5519!UTM  18      -   0.99999829  x   0.99981942  =   0.99981771
 JV5519
 JV5519:                Primary Azimuth Mark                     Grid Az
 JV5519:SPC MD       -  BALTIMORE CITY SEWAGE PLANT TK           085 17 01.4
 JV5519:UTM  18      -  BALTIMORE CITY SEWAGE PLANT TK           086 32 52.2
 JV5519
 JV5519_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6650550188(NAD 83)
 JV5519
 JV5519|---------------------------------------------------------------------|
 JV5519| PID    Reference Object                     Distance      Geod. Az  |
 JV5519|                                                           dddmmss.s |
 JV5519| JV5396 BALTIMORE CITY SEWAGE PLANT TK      APPROX. 4.4 KM 0853402.7 |
 JV5519| JV5477 BALTIMORE CROSSE BLACKWELL TK       APPROX. 1.5 KM 1062819.8 |
 JV5519| JV5511 PEMCO                               366.708 METERS 17642     |
 JV5519| JV5518 TOLNA                               480.000 METERS 2173037.1 |
 JV5519| JV5494 BALTIMORE CITY COLLEGE TOWER        APPROX. 5.8 KM 3125202.9 |
 JV5519| JV5468 BALTIMORE CITY HOSPITAL TANK        211.588 METERS 33041     |
 JV5519|---------------------------------------------------------------------|
 JV5519
 JV5519                          SUPERSEDED SURVEY CONTROL
 JV5519
 JV5519  NAD 83(1986)-  39 17 26.82136(N)    076 32 52.71553(W) AD(       ) 1
 JV5519  NAD 27      -  39 17 26.43400(N)    076 32 53.84400(W) AD(       ) 1
 JV5519
 JV5519.Superseded values are not recommended for survey control.
 JV5519
 JV5519.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5519.See file dsdata.pdf to determine how the superseded data were derived.
 JV5519
 JV5519_MARKER: DS = TRIANGULATION STATION DISK
 JV5519_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV5519_SP_SET: TRAP DOOR COPING
 JV5519_STAMPING: CITY HOSPITAL 1940
 JV5519_MARK LOGO: CGS
 JV5519_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5519
 JV5519  HISTORY     - Date     Condition        Report By
 JV5519  HISTORY     - 1940     MONUMENTED       CGS
 JV5519  HISTORY     - 1950     GOOD             CGS
 JV5519  HISTORY     - 1952     GOOD             CGS
 JV5519  HISTORY     - 1954     GOOD             CGS
 JV5519
 JV5519                          STATION DESCRIPTION
 JV5519
 JV5519'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5519'STATION IS LOCATED ON THE BALTIMORE CITY HOSPITAL GROUNDS ON THE N
 JV5519'SIDE OF EASTERN AVENUE, IN THE EASTERN PART OF THE CITY OF
 JV5519'BALTIMORE.
 JV5519'
 JV5519'THE STATION MARK IS A STANDARD DISK SET IN THE COPING AROUND
 JV5519'THE TRAP-DOOR OPENING TO THE ROOF OF THE CHRONIC HOSPITAL BUILDING
 JV5519'ELEVATOR SHAFT.  IT IS IN THE NW CORNER OF THE COPING, AND IS 7
 JV5519'FEET FROM THE SE INSIDE CORNER OF THE BUILDING, 23.5 FEET FROM THE
 JV5519'SW INSIDE CORNER, 35.3 FEET FROM THE NW INSIDE CORNER, AND 27.5
 JV5519'FEET FROM THE NE INSIDE CORNER.
 JV5519
 JV5519                          STATION RECOVERY (1950)
 JV5519
 JV5519'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (MLC)
 JV5519'STATION WAS RECOVERED AS DESCRIBED AND THE MARK IS IN GOOD
 JV5519'CONDITION.  PERMISSION TO GO ON ROOF WAS OBTAINED FROM MR. BEAL
 JV5519'OF THE MANAGERS OFFICE.
 JV5519
 JV5519                          STATION RECOVERY (1952)
 JV5519
 JV5519'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (HAP)
 JV5519'STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION
 JV5519'IS ADEQUATE.  DISTANCES TO THE REFERENCE POINTS WERE MEASURED WITH A
 JV5519'STEEL TAPE AND FOUND TO BE CORRECT.
 JV5519
 JV5519                          STATION RECOVERY (1954)
 JV5519
 JV5519'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 JV5519'RECOVERED AS DESCRIBED IN GOOD CONDITION.  DESCRIPTION IS ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7514 ***********************************************************************
 HV7514  DESIGNATION -  CLAGETT
 HV7514  PID         -  HV7514
 HV7514  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7514  COUNTRY     -  US
 HV7514  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7514
 HV7514                         *CURRENT SURVEY CONTROL
 HV7514  ______________________________________________________________________
 HV7514* NAD 83(1993) POSITION- 38 47 59.22660(N) 076 46 47.48478(W)   ADJUSTED
 HV7514* NAVD 88 ORTHO HEIGHT -    65.0   (meters)      213.    (feet) VERTCON3
 HV7514  ______________________________________________________________________
 HV7514  GEOID HEIGHT    -        -32.861 (meters)                     GEOID18
 HV7514  LAPLACE CORR    -         -6.24  (seconds)                    DEFLEC18
 HV7514  HORZ ORDER      -  FIRST
 HV7514
 HV7514.The horizontal coordinates were established by classical geodetic methods
 HV7514.and adjusted by the National Geodetic Survey in November 1994.
 HV7514
 HV7514.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7514.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7514
 HV7514.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7514.GEOID18 height accuracy estimate available here.
 HV7514
 HV7514.Click photographs - Photos may exist for this station.
 HV7514
 HV7514.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7514
 HV7514. The following values were computed from the NAD 83(1993) position.
 HV7514
 HV7514;                    North         East     Units Scale Factor Converg.
 HV7514;SPC MD       -   125,803.803   419,122.873   MT  0.99995072   +0 08 17.4
 HV7514;SPC MD       -   412,741.31  1,375,072.29   sFT  0.99995072   +0 08 17.4
 HV7514;UTM  18      - 4,296,063.429   345,440.270   MT  0.99989417   -1 06 55.7
 HV7514
 HV7514!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7514!SPC MD       -   0.99999496  x   0.99995072  =   0.99994568
 HV7514!UTM  18      -   0.99999496  x   0.99989417  =   0.99988913
 HV7514
 HV7514:                Primary Azimuth Mark                     Grid Az
 HV7514:SPC MD       -  CLAGETT AZ MK                            052 53 00.4
 HV7514:UTM  18      -  CLAGETT AZ MK                            054 08 13.5
 HV7514
 HV7514_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4544096063(NAD 83)
 HV7514
 HV7514|---------------------------------------------------------------------|
 HV7514| PID    Reference Object                     Distance      Geod. Az  |
 HV7514|                                                           dddmmss.s |
 HV7514| CX2615 CLAGETT RM 1                         20.989 METERS 00405     |
 HV7514| HV7228 UPPER MARLBORO WATER SYS TANK       APPROX. 4.2 KM 0462921.3 |
 HV7514| CX2614 CLAGETT AZ MK                                      0530117.8 |
 HV7514| HV7229 UPPER MARLBORO GEISK NIEMAN TK      APPROX. 4.0 KM 0553747.5 |
 HV7514| HV7230 UPPER MARLBORO RACE TRACK TANK      APPROX. 3.2 KM 0630112.6 |
 HV7514| CX2616 CLAGETT RM 2                         19.481 METERS 27725     |
 HV7514|---------------------------------------------------------------------|
 HV7514
 HV7514                          SUPERSEDED SURVEY CONTROL
 HV7514
 HV7514  NAD 83(1991)-  38 47 59.22630(N)    076 46 47.48487(W) AD(       ) 1
 HV7514  NAD 83(1986)-  38 47 59.22373(N)    076 46 47.49836(W) AD(       ) 1
 HV7514  NAD 27      -  38 47 58.81342(N)    076 46 48.60846(W) AD(       ) 1
 HV7514  NGVD 29 (07/19/86)   65.2    (m)          214.     (f) VERT ANG       
 HV7514
 HV7514.Superseded values are not recommended for survey control.
 HV7514
 HV7514.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7514.See file dsdata.pdf to determine how the superseded data were derived.
 HV7514
 HV7514_MARKER: DS = TRIANGULATION STATION DISK
 HV7514_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7514_STAMPING: CLAGETT 1970
 HV7514_MARK LOGO: CGS
 HV7514_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7514+STABILITY: SURFACE MOTION
 HV7514
 HV7514  HISTORY     - Date     Condition        Report By
 HV7514  HISTORY     - 1970     MONUMENTED       NGS
 HV7514
 HV7514                          STATION DESCRIPTION
 HV7514
 HV7514'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7514'THE STATION IS LOCATED ON THE EAST SLOPE OF A SMALL KNOLL AT THE EAST
 HV7514'EDGE OF THE CLAGETT CEMETERY, 2-1/2 MILES SOUTHEAST OF MELWOOD, 2
 HV7514'MILES SOUTHWEST OF UPPER MARLBORO, 1/4 MILE WEST OF OLD CRAIN
 HV7514'HIGHWAY AND ON PROPERTY OWNED BY HAL CLAGETT.
 HV7514'
 HV7514'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 4 AND OLD
 HV7514'CRAIN HIGHWAY ABOUT 3/4 MILE WEST OF UPPER MARLBORO, GO SOUTH ON OLD
 HV7514'CRAIN HIGHWAY FOR 0.9 MILE TO A SIDE ROAD, (CONTINUE SOUTH ON OLD
 HV7514'CRAIN HIGHWAY FOR 235.6 FEET TO THE AZIMUTH MARK ON THE RIGHT)
 HV7514'TURN RIGHT AND GO SOUTHWEST AND WEST FOR 0.3 MILE TO A DIM
 HV7514'GRAVELED ROAD LEFT, TURN SHARP LEFT AND GO SOUTHEAST UP HILL FOR
 HV7514'0.05 MILE TO THE EAST EDGE OF THE CEMETERY AND THE STATION.
 HV7514'
 HV7514'THE STATION MARK IS A STANDARD DISK STAMPED CLAGETT 1970, SET IN TOP
 HV7514'OF A 12-INCH CONCRETE CYLINDER WHICH IS 18 INCHES BELOW THE GROUND
 HV7514'SURFACE.  IT IS 105.6 FEET EAST OF THE SOUTHEAST CORNER OF THOMAS
 HV7514'CLAGETT VII TOMB STONE, 36.6 FEET SOUTHEAST OF A HICKORY TREE,
 HV7514'13.5 FEET SOUTHEAST OF THE APPROXIMATE CENTER OF THE GRAVELED ROAD
 HV7514'AND ABOUT 15 FEET LOWER THAN THE SUMMIT OF THE KNOLL.
 HV7514'
 HV7514'REFERENCE MARK 1 IS A STANDARD DISK STAMPED CLAGETT NO 1 1970, SET IN
 HV7514'TOP OF A 12-INCH CONCRETE CYLINDER WHICH IS FLUSH WITH THE GROUND
 HV7514'SURFACE.  IT IS 47.5 FEET NORTHEAST OF THE HICKORY TREE, 10.5 FEET
 HV7514'WEST OF THE APPROXIMATE CENTER OF THE GRAVELED ROAD AND ABOUT 3
 HV7514'FEET HIGHER THAN THE STATION MARK.
 HV7514'
 HV7514'REFERENCE MARK 2 IS A STANDARD DISK STAMPED CLAGETT NO 2 1970, SET IN
 HV7514'TOP OF A 12-INCH CONCRETE CYLINDER WHICH IS FLUSH WITH THE GROUND
 HV7514'SURFACE.  IT IS 53.6 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF
 HV7514'THOMAS CLAGETT VII TOMB STONE, 47.0 FEET SOUTH-SOUTHWEST OF THE
 HV7514'HICKORY TREE, 6.0 FEET NORTH OF THE APPROXIMATE CENTER OF THE
 HV7514'GRAVELED ROAD AND ABOUT 3 FEET HIGHER THAN THE STATION MARK.
 HV7514'
 HV7514'THE AZIMUTH MARK IS A STANDARD DISK STAMPED CLAGETT 1970, SET IN TOP
 HV7514'OF A 12-INCH CONCRETE CYLINDER WHICH PROJECTS 2 INCHES ABOVE THE
 HV7514'GROUND SURFACE.  IT IS 235.5 FEET SOUTH OF THE APPROXIMATE CENTER
 HV7514'OF THE DIRT ROAD, 50.0 FEET NORTH OF A TELEPHONE POLE LETTERED AND
 HV7514'NUMBERED P53, 18.9 FEET WEST OF THE CENTER LINE OF OLD CRAIN
 HV7514'HIGHWAY, 1.6 FEET SOUTH OF A METAL WITNESS POST AND ABOUT THE SAME
 HV7514'ELEVATION AS THE HIGHWAY.
 HV7514'
 HV7514'REFERENCE MARK 1 TO REFERENCE MARK 2 WAS MEASURED OVER ROUGH
 HV7514'TERRAIN.
 HV7514'
 HV7514'HEIGHT OF LIGHT ABOVE STATION MARK 30.58 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4226 ***********************************************************************
 JV4226  DESIGNATION -  CLAGGETT
 JV4226  PID         -  JV4226
 JV4226  STATE/COUNTY-  MD/MONTGOMERY
 JV4226  COUNTRY     -  US
 JV4226  USGS QUAD   -  DAMASCUS (2016)
 JV4226
 JV4226                         *CURRENT SURVEY CONTROL
 JV4226  ______________________________________________________________________
 JV4226* NAD 83(1993) POSITION- 39 19 31.13875(N) 077 12 08.85337(W)   ADJUSTED
 JV4226* NAVD 88 ORTHO HEIGHT -   244.5   (meters)      802.    (feet) VERTCON3
 JV4226  ______________________________________________________________________
 JV4226  GEOID HEIGHT    -        -31.920 (meters)                     GEOID18
 JV4226  LAPLACE CORR    -          3.62  (seconds)                    DEFLEC18
 JV4226  HORZ ORDER      -  FIRST
 JV4226
 JV4226.The horizontal coordinates were established by classical geodetic methods
 JV4226.and adjusted by the National Geodetic Survey in November 1994.
 JV4226
 JV4226.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4226.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4226
 JV4226.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4226.GEOID18 height accuracy estimate available here.
 JV4226
 JV4226.Click photographs - Photos may exist for this station.
 JV4226
 JV4226.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4226
 JV4226. The following values were computed from the NAD 83(1993) position.
 JV4226
 JV4226;                    North         East     Units Scale Factor Converg.
 JV4226;SPC MD       -   184,140.413   382,542.630   MT  0.99998057   -0 07 37.5
 JV4226;SPC MD       -   604,134.00  1,255,058.61   sFT  0.99998057   -0 07 37.5
 JV4226;UTM  18      - 4,355,191.309   310,152.285   MT  1.00004379   -1 23 46.2
 JV4226
 JV4226!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4226!SPC MD       -   0.99996665  x   0.99998057  =   0.99994722
 JV4226!UTM  18      -   0.99996665  x   1.00004379  =   1.00001044
 JV4226
 JV4226:                Primary Azimuth Mark                     Grid Az
 JV4226:SPC MD       -  CLAGGETT AZ MK                           255 56 47.4
 JV4226:UTM  18      -  CLAGGETT AZ MK                           257 12 56.1
 JV4226
 JV4226_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1015255191(NAD 83)
 JV4226
 JV4226|---------------------------------------------------------------------|
 JV4226| PID    Reference Object                     Distance      Geod. Az  |
 JV4226|                                                           dddmmss.s |
 JV4226| JV4227 DAMASCUS METH CH SPIRE              APPROX. 4.4 KM 1775225.2 |
 JV4226| JV4225 DAMASCUS COUNTY HWY DEPT MAST       APPROX. 4.3 KM 1850516.5 |
 JV4226| JV4223 DAMASCUS MUN TANK                   APPROX. 4.3 KM 1851915.4 |
 JV4226| CK6813 CLAGGETT RM 1                        23.855 METERS 21156     |
 JV4226| CK6812 CLAGGETT AZ MK                                     2554909.9 |
 JV4226| JV4583 MONROVIA ATT MICROWAVE              APPROX. 7.2 KM 2911714.3 |
 JV4226| CK6814 CLAGGETT RM 2                        17.799 METERS 29404     |
 JV4226|---------------------------------------------------------------------|
 JV4226
 JV4226                          SUPERSEDED SURVEY CONTROL
 JV4226
 JV4226  NAD 83(1991)-  39 19 31.13781(N)    077 12 08.85420(W) AD(       ) 1
 JV4226  NAD 83(1986)-  39 19 31.13811(N)    077 12 08.86446(W) AD(       ) 1
 JV4226  NAD 27      -  39 19 30.76201(N)    077 12 09.92484(W) AD(       ) 1
 JV4226  NGVD 29 (07/19/86)  244.7    (m)          803.     (f) VERT ANG       
 JV4226
 JV4226.Superseded values are not recommended for survey control.
 JV4226
 JV4226.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4226.See file dsdata.pdf to determine how the superseded data were derived.
 JV4226
 JV4226_MARKER: DS = TRIANGULATION STATION DISK
 JV4226_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4226_STAMPING: CLAGGETT 1969
 JV4226_MARK LOGO: CGS
 JV4226_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4226+STABILITY: SURFACE MOTION
 JV4226
 JV4226  HISTORY     - Date     Condition        Report By
 JV4226  HISTORY     - 1969     MONUMENTED       CGS
 JV4226
 JV4226                          STATION DESCRIPTION
 JV4226
 JV4226'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4226'THE STATION IS ABOUT 1/4 MILE NORTHEAST OF CLAGETTSVILLE, ON A HILL
 JV4226'WHICH IS THE HIGHEST POINT IN THE IMMEDIATE VICINITY AND ON PROPERTY
 JV4226'CONTROLLED BY ROBERT G. GARRISON.
 JV4226'
 JV4226'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 27 AND
 JV4226'108 IN DAMASCUS, GO NORTH ON HIGHWAY 27 FOR 2.2 MILES TO A ROAD
 JV4226'FORK.  TAKE LEFT FORK, STATE HIGHWAY 80, AND GO NORTHWEST FOR
 JV4226'0.6 MILE TO MOXLEY ROAD ON THE LEFT AND A GRAVELED DRIVE ON THE
 JV4226'RIGHT.  TURN RIGHT AND GO NORTHEAST ON THE GRAVELED DRIVE FOR
 JV4226'0.15 MILE TO THE STATION ON THE RIGHT IN THE SOUTHEAST CORNER
 JV4226'OF A YARD.
 JV4226'
 JV4226'STATION MARK IS A STANDARD DISK, STAMPED CLAGGETT 1969, SET IN
 JV4226'THE TOP OF A ROUND CONCRETE POST THAT IS FLUSH WITH THE GROUND
 JV4226'SURFACE.  IT IS 151.0 FEET EAST-SOUTHEAST OF THE SOUTHEAST CORNER
 JV4226'OF A HOUSE, 58.9 FEET EAST OF A WITNESS POST, 35.7 FEET EAST
 JV4226'OF POWER LINE POLE NUMBER 7836, 31.0 FEET EAST OF THE CENTERLINE
 JV4226'OF THE GRAVELED DRIVE AND 21.5 FEET WEST OF THE WEST EDGE OF A
 JV4226'CULTIVATED FIELD.  THE UNDERGROUND MARK IS 36 INCHES BELOW THE
 JV4226'GROUND SURFACE.
 JV4226'
 JV4226'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CLAGGETT NO 1 1969,
 JV4226'SET IN THE TOP OF A ROUND CONCRETE POST THAT IS 12 INCHES IN
 JV4226'DIAMETER AND PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 94.0 FEET
 JV4226'SOUTHEAST OF THE POWER LINE POLE, 92.1 FEET SOUTHEAST OF THE
 JV4226'WITNESS POST, 15.0 FEET EAST OF THE CENTER OF THE GRAVELED DRIVE,
 JV4226'10.0 FEET WEST OF THE WEST EDGE OF THE CULTIVATED FIELD AND
 JV4226'ABOUT 2 FEET HIGHER IN ELEVATION THAN THE STATION.
 JV4226'
 JV4226'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CLAGGETT NO 2 1969,
 JV4226'SET IN THE TOP OF A ROUND CONCRETE POST THAT IS 12 INCHES IN
 JV4226'DIAMETER AND PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 28.8 FEET
 JV4226'SOUTH OF THE POWER LINE POLE, 12.0 FEET SOUTH OF THE CENTER OF
 JV4226'THE GRAVELED ROAD, 1.3 FEET SOUTH OF THE WITNESS POST AND ABOUT
 JV4226'2 FEET HIGHER IN ELEVATION THAN THE STATION.
 JV4226'
 JV4226'AZIMUTH MARK IS A STANDARD DISK, STAMPED CLAGGETT 1969, SET IN
 JV4226'THE TOP OF A ROUND CONCRETE POST THAT IS 12 INCHES IN DIAMETER
 JV4226'AND PROJECTS 2 INCHES ABOVE THE GROUND.  IT IS 22.0 FEET SOUTH
 JV4226'OF THE CENTERLINE OF STATE HIGHWAY 80, 2.2 FEET EAST OF TELEPHONE
 JV4226'LINE POLE NUMBER F 28498 AND 1.8 FEET WEST OF A WITNESS POST.  TO
 JV4226'REACH THE MARK FROM THE STATION, GO SOUTHWEST ON THE GRAVELED
 JV4226'ROAD FOR 0.15 MILE TO STATE HIGHWAY 80, TURN RIGHT AND GO NORTH
 JV4226'ON STATE HIGHWAY 80 FOR 0.25 MILE TO THE MARK ON THE LEFT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6411 ***********************************************************************
 DG6411  DESIGNATION -  CLAIBORNE
 DG6411  PID         -  DG6411
 DG6411  STATE/COUNTY-  MD/TALBOT
 DG6411  COUNTRY     -  US
 DG6411  USGS QUAD   -  CLAIBORNE (2016)
 DG6411
 DG6411                         *CURRENT SURVEY CONTROL
 DG6411  ______________________________________________________________________
 DG6411* NAD 83(1986) POSITION- 38 50 13.8    (N) 076 16 50.5    (W)   HD_HELD2
 DG6411* NAVD 88 ORTHO HEIGHT -     1.369 (meters)        4.49  (feet) ADJUSTED
 DG6411  ______________________________________________________________________
 DG6411  GEOID HEIGHT    -        -34.061 (meters)                     GEOID18
 DG6411  DYNAMIC HEIGHT  -          1.368 (meters)        4.49  (feet) COMP
 DG6411  MODELED GRAVITY -    980,057.9   (mgal)                       NAVD 88
 DG6411
 DG6411  VERT ORDER      -  SECOND    CLASS I
 DG6411
 DG6411.The horizontal coordinates were established by autonomous hand held GPS
 DG6411.observations and have an estimated accuracy of +/- 10 meters.
 DG6411
 DG6411.The orthometric height was determined by differential leveling and
 DG6411.adjusted by the NATIONAL GEODETIC SURVEY
 DG6411.in September 2004.
 DG6411
 DG6411.No vertical observational check was made to the station.
 DG6411
 DG6411.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6411.GEOID18 height accuracy estimate available here.
 DG6411
 DG6411.Click photographs - Photos may exist for this station.
 DG6411
 DG6411.The dynamic height is computed by dividing the NAVD 88
 DG6411.geopotential number by the normal gravity value computed on the
 DG6411.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6411.degrees latitude (g = 980.6199 gals.).
 DG6411
 DG6411.The modeled gravity was interpolated from observed gravity values.
 DG6411
 DG6411;                    North         East    Units  Estimated Accuracy
 DG6411;SPC MD       -   130,176.      462,450.      MT  (+/- 10 meters HH2 GPS)
 DG6411
 DG6411_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8884699486(NAD 83)
 DG6411
 DG6411                          SUPERSEDED SURVEY CONTROL
 DG6411
 DG6411.No superseded survey control is available for this station.
 DG6411
 DG6411_STAMPING: CLAIBORNE 1986
 DG6411_MARK LOGO: USACE
 DG6411_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6411+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6411
 DG6411  HISTORY     - Date     Condition        Report By
 DG6411  HISTORY     - 1986     MONUMENTED       USACE
 DG6411  HISTORY     - 19991213 GOOD             MDSHA
 DG6411  HISTORY     - 20050111 GOOD             USPSQD
 DG6411  HISTORY     - 20210317 MARK NOT FOUND   MDSHA
 DG6411
 DG6411                          STATION DESCRIPTION
 DG6411
 DG6411'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6411'THE MARK IS LOCATED ABOUT 3.1 MI (4.99 KM) NORTH-NORTHEAST OF WITTMAN,
 DG6411'1.4 MI (2.25 KM) NORTH OF MCDANIEL AND AT THE COUNTY BOAT LAUNCH IN
 DG6411'THE TOWN OF CLAIBORNE.  OWNERSHIP--COUNTY RIGHT-OF-WAY. TO REACH THE
 DG6411'MARK FROM THE POST OFFICE IN CLAIBORNE, PROCEED WEST ALONG CLAIBORNE
 DG6411'LANDING ROAD FOR 0.15 MILES (0.24 KM) TO THE WESTERLY MOST PARKING
 DG6411'AREA FOR THE BOAT LAUNCH.  IT IS 3.5 FEET (1.1 M) NORTHEAST OF POWER
 DG6411'POLE NUMBER 7563-514, 143.1 NORTHWEST OF A POWER POLE WITH NO NUMBERS,
 DG6411'124.2 FEET (37.9 M) WEST OF THE SOUTHEAST CORNER OF THE CONCRETE BOAT
 DG6411'LAUNCH, 60.3 FEET (18.4 M) SOUTH OF THE CORNER OF A NORTH-SOUTH AND
 DG6411'EAST-WEST BULKHEAD AND 184.5 FEET (56.2 M) SOUTHWEST OF TIDAL MARK
 DG6411'RETZ.  IT IS A USE DISK SET IN THE TOP OF A 5 INCH (13 CM) CONCRETE
 DG6411'MONUMENT ENCASED IN A PVC PIPE AND SET IN THE MACADAM PARKING LOT.
 DG6411
 DG6411                          STATION RECOVERY (2005)
 DG6411
 DG6411'RECOVERY NOTE BY US POWER SQUADRON 2005 (TJO)
 DG6411'FROM DP AND L POLE 7563-514 - GO NORTHEAST 3 FT 2 INCHES.
 DG6411'SET IN 5 INCH CONCRETE MONUMENT IN PVC PIPE IN MACADAM PARKING LOT
 DG6411
 DG6411                          STATION RECOVERY (2021)
 DG6411
 DG6411'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (MRA)
 DG6411'THE POLE IS GONE.  TH3E IS A NEW DOCK AND THE PARKING LOT HAS BEEN
 DG6411'REPAVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3144 ***********************************************************************
 DI3144  DESIGNATION -  CLAIBORNE 1
 DI3144  PID         -  DI3144
 DI3144  STATE/COUNTY-  MD/TALBOT
 DI3144  COUNTRY     -  US
 DI3144  USGS QUAD   -  CLAIBORNE (2016)
 DI3144
 DI3144                         *CURRENT SURVEY CONTROL
 DI3144  ______________________________________________________________________
 DI3144* NAD 83(2011) POSITION- 38 50 06.18147(N) 076 16 26.39376(W)   ADJUSTED
 DI3144* NAD 83(2011) ELLIP HT-   -30.353 (meters)        (06/27/12)   ADJUSTED
 DI3144* NAD 83(2011) EPOCH   -  2010.00
 DI3144* NAVD 88 ORTHO HEIGHT -     3.7   (meters)       12.    (feet) GPS OBS
 DI3144  ______________________________________________________________________
 DI3144  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3144  GEOID HEIGHT    -        -34.034 (meters)                     GEOID03
 DI3144  GEOID HEIGHT    -        -34.084 (meters)                     GEOID18
 DI3144  NAD 83(2011) X  -  1,180,417.388 (meters)                     COMP
 DI3144  NAD 83(2011) Y  - -4,832,734.285 (meters)                     COMP
 DI3144  NAD 83(2011) Z  -  3,978,050.558 (meters)                     COMP
 DI3144  LAPLACE CORR    -         -5.06  (seconds)                    DEFLEC18
 DI3144
 DI3144  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3144  Standards:
 DI3144         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3144            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3144  -------------------------------------------------------------------
 DI3144  NETWORK    0.69   0.94           0.30   0.26   0.48     -0.01509560
 DI3144  -------------------------------------------------------------------
 DI3144  Click here for local accuracies and other accuracy information.
 DI3144
 DI3144.The horizontal coordinates were established by GPS observations
 DI3144.and adjusted by the National Geodetic Survey in June 2012.
 DI3144
 DI3144.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3144.been affixed to the stable North American tectonic plate. See 
 DI3144.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3144
 DI3144.The horizontal coordinates are valid at the epoch date displayed above
 DI3144.which is a decimal equivalence of Year/Month/Day.
 DI3144
 DI3144.The orthometric height was determined by GPS observations and a
 DI3144.high-resolution geoid model.
 DI3144
 DI3144.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3144.GEOID18 height accuracy estimate available here.
 DI3144
 DI3144.Click photographs - Photos may exist for this station.
 DI3144
 DI3144.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3144
 DI3144.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3144
 DI3144.The ellipsoidal height was determined by GPS observations
 DI3144.and is referenced to NAD 83.
 DI3144
 DI3144. The following values were computed from the NAD 83(2011) position.
 DI3144
 DI3144;                    North         East     Units Scale Factor Converg.
 DI3144;SPC MD       -   129,946.063   463,032.871   MT  0.99995010   +0 27 20.4
 DI3144;SPC MD       -   426,331.38  1,519,133.68   sFT  0.99995010   +0 27 20.4
 DI3144;UTM  18      - 4,299,243.180   389,424.607   MT  0.99975056   -0 47 56.3
 DI3144
 DI3144!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3144!SPC MD       -   1.00000476  x   0.99995010  =   0.99995486
 DI3144!UTM  18      -   1.00000476  x   0.99975056  =   0.99975532
 DI3144
 DI3144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8942499243(NAD 83)
 DI3144
 DI3144|---------------------------------------------------------------------|
 DI3144| PID    Reference Object                     Distance      Geod. Az  |
 DI3144|                                                           dddmmss.s |
 DI3144| DI3145 CLAIBORNE 2                         270.099 METERS 13930     |
 DI3144|---------------------------------------------------------------------|
 DI3144
 DI3144                          SUPERSEDED SURVEY CONTROL
 DI3144
 DI3144  NAD 83(1991)-  38 50 06.18156(N)    076 16 26.39468(W) AD(       ) 1
 DI3144  ELLIP H (01/05/07)  -30.309  (m)                       GP(       ) 4 2
 DI3144
 DI3144.Superseded values are not recommended for survey control.
 DI3144
 DI3144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3144.See file dsdata.pdf to determine how the superseded data were derived.
 DI3144
 DI3144_MARKER: DD = SURVEY DISK
 DI3144_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3144_STAMPING: CLAIBORNE 1
 DI3144_MARK LOGO: MD-041
 DI3144_PROJECTION: FLUSH
 DI3144_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3144_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3144+STABILITY: SURFACE MOTION
 DI3144_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3144+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3144
 DI3144  HISTORY     - Date     Condition        Report By
 DI3144  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3144
 DI3144                          STATION DESCRIPTION
 DI3144
 DI3144'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3144'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR ST. MICHAELS,
 DI3144'MARYLAND.  IT IS  ABOUT 11.8 MI (19.0 KM) NORTHWEST OF EASTON,
 DI3144'MARYLAND, ABOUT 21.5 MI (34.6 KM) NORTHWEST  OF CAMBRIDGE, MARYLAND
 DI3144'AND ABOUT 12.8 MI (20.6 KM) SOUTHWEST OF WYE MILLS, MARYLAND.
 DI3144'TO REACH THE STATION FROM THE INTERSECTION SR322 (EASTON BYPASS) AND
 DI3144'SR 33 (ST. MICHAELS  ROAD/ EASTON CLAIBORNE ROAD) PROCEED WEST ON SR33
 DI3144'FOR 12.6 MI (20.3KM) TO INTERSECTION  WITH SR 451 (EASTON CLAIBORNE
 DI3144'ROAD).  VEER RIGHT AND PROCEED 1.3 MI (2.1 KM) NORTHWEST TO  THE
 DI3144'STATION ON THE RIGHT.
 DI3144'STATION IS 3.2 FT (1.0 M) NORTHEAST OF THE NORTHEAST EDGE OF EASTON
 DI3144'CLAIBORNE ROAD, 36.0  FT (11.0 M) SOUTHEAST OF UTILITY POLE DPL
 DI3144'27754-10442 AND 35.0 FT (10.7 M) EAST OF NORTHEAST  CORNER OF L-SHAPED
 DI3144'HEADWALL ON THE PROPERTY OF HOUSE 10364.  A 3 IN BRASS DISK STAMPED
 DI3144'CLAIBORNE 1 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT FLUSH
 DI3144'WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3145 ***********************************************************************
 DI3145  DESIGNATION -  CLAIBORNE 2
 DI3145  PID         -  DI3145
 DI3145  STATE/COUNTY-  MD/TALBOT
 DI3145  COUNTRY     -  US
 DI3145  USGS QUAD   -  CLAIBORNE (2016)
 DI3145
 DI3145                         *CURRENT SURVEY CONTROL
 DI3145  ______________________________________________________________________
 DI3145* NAD 83(2011) POSITION- 38 49 59.52166(N) 076 16 19.11995(W)   ADJUSTED
 DI3145* NAD 83(2011) ELLIP HT-   -29.120 (meters)        (06/27/12)   ADJUSTED
 DI3145* NAD 83(2011) EPOCH   -  2010.00
 DI3145* NAVD 88 ORTHO HEIGHT -     5.0   (meters)       16.    (feet) GPS OBS
 DI3145  ______________________________________________________________________
 DI3145  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3145  GEOID HEIGHT    -        -34.045 (meters)                     GEOID03
 DI3145  GEOID HEIGHT    -        -34.094 (meters)                     GEOID18
 DI3145  NAD 83(2011) X  -  1,180,618.600 (meters)                     COMP
 DI3145  NAD 83(2011) Y  - -4,832,818.688 (meters)                     COMP
 DI3145  NAD 83(2011) Z  -  3,977,891.358 (meters)                     COMP
 DI3145  LAPLACE CORR    -         -5.07  (seconds)                    DEFLEC18
 DI3145
 DI3145  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3145  Standards:
 DI3145         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3145            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3145  -------------------------------------------------------------------
 DI3145  NETWORK    0.69   0.94           0.30   0.26   0.48     -0.01550981
 DI3145  -------------------------------------------------------------------
 DI3145  Click here for local accuracies and other accuracy information.
 DI3145
 DI3145.The horizontal coordinates were established by GPS observations
 DI3145.and adjusted by the National Geodetic Survey in June 2012.
 DI3145
 DI3145.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3145.been affixed to the stable North American tectonic plate. See 
 DI3145.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3145
 DI3145.The horizontal coordinates are valid at the epoch date displayed above
 DI3145.which is a decimal equivalence of Year/Month/Day.
 DI3145
 DI3145.The orthometric height was determined by GPS observations and a
 DI3145.high-resolution geoid model.
 DI3145
 DI3145.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3145.GEOID18 height accuracy estimate available here.
 DI3145
 DI3145.Click photographs - Photos may exist for this station.
 DI3145
 DI3145.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3145
 DI3145.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3145
 DI3145.The ellipsoidal height was determined by GPS observations
 DI3145.and is referenced to NAD 83.
 DI3145
 DI3145. The following values were computed from the NAD 83(2011) position.
 DI3145
 DI3145;                    North         East     Units Scale Factor Converg.
 DI3145;SPC MD       -   129,742.109   463,209.929   MT  0.99995012   +0 27 25.0
 DI3145;SPC MD       -   425,662.24  1,519,714.58   sFT  0.99995012   +0 27 25.0
 DI3145;UTM  18      - 4,299,035.440   389,597.122   MT  0.99975009   -0 47 51.7
 DI3145
 DI3145!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3145!SPC MD       -   1.00000457  x   0.99995012  =   0.99995469
 DI3145!UTM  18      -   1.00000457  x   0.99975009  =   0.99975466
 DI3145
 DI3145_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8959799035(NAD 83)
 DI3145
 DI3145|---------------------------------------------------------------------|
 DI3145| PID    Reference Object                     Distance      Geod. Az  |
 DI3145|                                                           dddmmss.s |
 DI3145| DI3144 CLAIBORNE 1                         270.099 METERS 31930     |
 DI3145|---------------------------------------------------------------------|
 DI3145
 DI3145                          SUPERSEDED SURVEY CONTROL
 DI3145
 DI3145  NAD 83(1991)-  38 49 59.52175(N)    076 16 19.12087(W) AD(       ) 1
 DI3145  ELLIP H (01/05/07)  -29.075  (m)                       GP(       ) 4 2
 DI3145
 DI3145.Superseded values are not recommended for survey control.
 DI3145
 DI3145.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3145.See file dsdata.pdf to determine how the superseded data were derived.
 DI3145
 DI3145_MARKER: DD = SURVEY DISK
 DI3145_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3145_STAMPING: CLAIBORNE 2
 DI3145_MARK LOGO: MD-041
 DI3145_PROJECTION: RECESSED 5 CENTIMETERS
 DI3145_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3145_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3145+STABILITY: SURFACE MOTION
 DI3145_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3145+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3145
 DI3145  HISTORY     - Date     Condition        Report By
 DI3145  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3145
 DI3145                          STATION DESCRIPTION
 DI3145
 DI3145'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3145'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR ST. MICHAELS,
 DI3145'MARYLAND.  IT IS  ABOUT 11.6 MI (18.7 KM) NORTHWEST OF EASTON,
 DI3145'MARYLAND, ABOUT 21.3 MI (34.3 KM) NORTHWEST  OF CAMBRIDGE, MARYLAND
 DI3145'AND ABOUT 12.8 MI (20.6 KM) SOUTHWEST OF WYE MILLS, MARYLAND.
 DI3145'TO REACH THE STATION FROM THE INTERSECTION SR322 (EASTON BYPASS) AND
 DI3145'SR 33 (ST. MICHAELS  ROAD/ EASTON CLAIBORNE ROAD) PROCEED WEST ON SR
 DI3145'33 FOR 12.6 MI (20.3KM) TO INTERSECTION  WITH SR 451 (EASTON CLAIBORNE
 DI3145'ROAD).  VEER RIGHT AND PROCEED 1.15 MI (1.8 KM) NORTHWEST  TO THE
 DI3145'STATION ON THE RIGHT.
 DI3145'STATION IS 5.5 FT (1.7 M) NORTHEAST OF THE NORTHEAST EDGE OF EASTON
 DI3145'CLAIBORNE ROAD, 33.0  FT (10.1 M) WEST OF UTILITY POLE STMUC 143 AND
 DI3145'130.0 FT (39.6 M) SOUTHEAST OF UTILITY POLE  DPL 27804-10381.  A 3 IN
 DI3145'BRASS DISK STAMPED CLAIBORNE 2 SET IN THE TOP OF A 1 FT (0.3 M)
 DI3145'CONCRETE MONUMENT RECESSED 0.2 FT BELOW THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1926 ***********************************************************************
 HU1926  DESIGNATION -  CLARA
 HU1926  PID         -  HU1926
 HU1926  STATE/COUNTY-  MD/WICOMICO
 HU1926  COUNTRY     -  US
 HU1926  USGS QUAD   -  WETIPQUIN (2016)
 HU1926
 HU1926                         *CURRENT SURVEY CONTROL
 HU1926  ______________________________________________________________________
 HU1926* NAD 83(1991) POSITION- 38 16 31.80573(N) 075 48 56.45796(W)   ADJUSTED
 HU1926* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU1926  ______________________________________________________________________
 HU1926  GEOID HEIGHT    -        -35.813 (meters)                     GEOID18
 HU1926  LAPLACE CORR    -         -1.43  (seconds)                    DEFLEC18
 HU1926  HORZ ORDER      -  SECOND
 HU1926
 HU1926.The horizontal coordinates were established by classical geodetic methods
 HU1926.and adjusted by the National Geodetic Survey in January 1992.
 HU1926
 HU1926.The orthometric height was scaled from a topographic map.
 HU1926
 HU1926.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1926.GEOID18 height accuracy estimate available here.
 HU1926
 HU1926.Click photographs - Photos may exist for this station.
 HU1926
 HU1926.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1926
 HU1926. The following values were computed from the NAD 83(1991) position.
 HU1926
 HU1926;                    North         East     Units Scale Factor Converg.
 HU1926;SPC MD       -    68,255.693   503,628.683   MT  1.00000435   +0 44 35.9
 HU1926;SPC MD       -   223,935.55  1,652,321.77   sFT  1.00000435   +0 44 35.9
 HU1926;UTM  18      - 4,236,697.813   428,653.413   MT  0.99966269   -0 30 19.0
 HU1926
 HU1926!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1926!SPC MD       -   1.00000535  x   1.00000435  =   1.00000970
 HU1926!UTM  18      -   1.00000535  x   0.99966269  =   0.99966803
 HU1926
 HU1926:                Primary Azimuth Mark                     Grid Az
 HU1926:SPC MD       -  ELLIS 2                                  232 24 00.5
 HU1926:UTM  18      -  ELLIS 2                                  233 38 55.4
 HU1926
 HU1926_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2865336697(NAD 83)
 HU1926
 HU1926|---------------------------------------------------------------------|
 HU1926| PID    Reference Object                     Distance      Geod. Az  |
 HU1926|                                                           dddmmss.s |
 HU1926| DC7923 CLARA RM 2                                         03808     |
 HU1926| DC7922 CLARA RM 1                                         10614     |
 HU1926| HU1857 MT VERNON FLATS UPPER TEMP BCN      APPROX. 4.7 KM 2220831.6 |
 HU1926| HU1924 MT VERNON FLATS BEACON              APPROX. 3.6 KM 2251844.5 |
 HU1926| HU1851 ELLIS 2                             APPROX. 6.0 KM 2330836.4 |
 HU1926|---------------------------------------------------------------------|
 HU1926
 HU1926                          SUPERSEDED SURVEY CONTROL
 HU1926
 HU1926  NAD 83(1986)-  38 16 31.80336(N)    075 48 56.48031(W) AD(       ) 2
 HU1926  NAD 27      -  38 16 31.36700(N)    075 48 57.73500(W) AD(       ) 2
 HU1926
 HU1926.Superseded values are not recommended for survey control.
 HU1926
 HU1926.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1926.See file dsdata.pdf to determine how the superseded data were derived.
 HU1926
 HU1926_MARKER: DS = TRIANGULATION STATION DISK
 HU1926_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1926_STAMPING: CLAY 1932
 HU1926_MARK LOGO: CGS
 HU1926_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1926+STABILITY: SURFACE MOTION
 HU1926
 HU1926  HISTORY     - Date     Condition        Report By
 HU1926  HISTORY     - 1932     MONUMENTED       CGS
 HU1926  HISTORY     - 1942     GOOD             CGS
 HU1926
 HU1926                          STATION DESCRIPTION
 HU1926
 HU1926'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1926'STATION IS ON THE FARM OF MR. J. HAKEMER, ON THE WHITE
 HU1926'HAVEN-NANTICOKE ROAD.
 HU1926'
 HU1926'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1926'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HU1926'
 HU1926'IT IS REACHED FROM THE WATER FRONT OF WHITE HAVEN BY GOING
 HU1926'NORTHWARD ON A HARD-SURFACE ROAD FOR 0.4 MILE.  TURN WESTWARD
 HU1926'ONTO FIRST HARD-SURFACE ROAD AND CONTINUE FOR 1.3 MILES TO A
 HU1926'PRIVATE FARM ROAD LEADING NORTHWARD 150 METERS TO THE
 HU1926'STATION.  STATION IS AT THE EDGE OF THE FIELD AT THE SW CORNER
 HU1926'OF A PINE WOODS.  THE FARMHOUSE STANDS 1/8 MILE WESTWARD FROM
 HU1926'THE STATION.  THE REFERENCE MARKS ARE INSIDE THE PINE WOODS.
 HU1926'
 HU1926'HEIGHT OF SIGNAL ABOVE STATION MARK - 26.5 METERS.
 HU1926
 HU1926                          STATION RECOVERY (1942)
 HU1926
 HU1926'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1926'THE STATION IS LOCATED ABOUT 2 MILES W OF WHITEHAVEN ON THE
 HU1926'NANTICOKE-WHITEHAVEN ROAD, ON THE FARM OF MR. J. HAKEMER,
 HU1926'ABOUT 150 METERS NW OF THE INTERSECTION OF A LANE AND THE
 HU1926'NANTICOKE-WHITEHAVEN ROAD, ABOUT 3 FEET FROM THE EDGE OF A
 HU1926'FIELD, IN THE SW CORNER OF A PINE WOODS.  THE STATION IS MARKED
 HU1926'BY A BRONZE DISK, STAMPED CLARA 1932, SET IN THE TOP OF AN
 HU1926'11-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 10 INCHES ABOVE
 HU1926'THE SURFACE OF THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1926'
 HU1926'REFERENCE MARK NO.1 IS LOCATED 26.24 FEET E OF THE STATION,
 HU1926'56 FEET E OF THE INTERSECTION OF THE LANE AND THE WOODS, 16
 HU1926'FEET FROM THE EDGE OF THE FIELD, AND 510 FEET NE OF THE
 HU1926'INTERSECTION OF THE LANE AND THE NANTICOKE-WHITEHAVEN ROAD.  THE
 HU1926'MARK IS A BRONZE DISK, WITH THE ARROW POINTING TOWARD THE
 HU1926'STATION, STAMPED CLARA 1932 NO.1, SET IN THE TOP OF AN 11-INCH
 HU1926'SQUARE CONCRETE MONUMENT, WHICH EXTENDS 6 INCHES ABOVE THE
 HU1926'SURFACE OF THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1926'
 HU1926'REFERENCE MARK NO.2 IS LOCATED 25.94 FEET N OF THE STATION,
 HU1926'528 FEET NE OF THE INTERSECTION OF THE LANE AND THE
 HU1926'NANTICOKE-WHITEHAVEN ROAD, 34 FEET NE OF THE NE EDGE OF THE
 HU1926'FIELD, AND 27 FEET SE OF THE SE EDGE OF THE FIELD.  THE MARK IS
 HU1926'A BRONZE DISK, WITH THE ARROW POINTING TOWARD THE STATION,
 HU1926'STAMPED CLARA 1932 NO.2, SET IN THE TOP OF AN 11-INCH SQUARE
 HU1926'CONCRETE MONUMENT, WHICH EXTENDS 8 INCHES ABOVE THE SURFACE OF
 HU1926'THE GROUND.  THE MARK IS IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6060 ***********************************************************************
 HV6060  DESIGNATION -  CLARK
 HV6060  PID         -  HV6060
 HV6060  STATE/COUNTY-  MD/TALBOT
 HV6060  COUNTRY     -  US
 HV6060  USGS QUAD   -  OXFORD (2016)
 HV6060
 HV6060                         *CURRENT SURVEY CONTROL
 HV6060  ______________________________________________________________________
 HV6060* NAD 83(1991) POSITION- 38 44 11.81518(N) 076 11 58.92541(W)   ADJUSTED
 HV6060* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6060  ______________________________________________________________________
 HV6060  GEOID HEIGHT    -        -34.490 (meters)                     GEOID18
 HV6060  LAPLACE CORR    -         -4.48  (seconds)                    DEFLEC18
 HV6060  HORZ ORDER      -  THIRD
 HV6060
 HV6060.The horizontal coordinates were established by classical geodetic methods
 HV6060.and adjusted by the National Geodetic Survey in January 1992.
 HV6060
 HV6060.The orthometric height was scaled from a topographic map.
 HV6060
 HV6060.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6060.GEOID18 height accuracy estimate available here.
 HV6060
 HV6060.Click photographs - Photos may exist for this station.
 HV6060
 HV6060.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6060
 HV6060. The following values were computed from the NAD 83(1991) position.
 HV6060
 HV6060;                    North         East     Units Scale Factor Converg.
 HV6060;SPC MD       -   119,073.525   469,579.093   MT  0.99995278   +0 30 08.3
 HV6060;SPC MD       -   390,660.39  1,540,610.74   sFT  0.99995278   +0 30 08.3
 HV6060;UTM  18      - 4,288,232.305   395,730.032   MT  0.99973388   -0 45 02.8
 HV6060
 HV6060!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6060!SPC MD       -   1.00000529  x   0.99995278  =   0.99995807
 HV6060!UTM  18      -   1.00000529  x   0.99973388  =   0.99973917
 HV6060
 HV6060:                Primary Azimuth Mark                     Grid Az
 HV6060:SPC MD       -  HOLLY                                    205 42 06.1
 HV6060:UTM  18      -  HOLLY                                    206 57 17.2
 HV6060
 HV6060_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9573088232(NAD 83)
 HV6060
 HV6060|---------------------------------------------------------------------|
 HV6060| PID    Reference Object                     Distance      Geod. Az  |
 HV6060|                                                           dddmmss.s |
 HV6060| HV5977 HOLLY                               APPROX. 0.7 KM 2061214.4 |
 HV6060|---------------------------------------------------------------------|
 HV6060
 HV6060                          SUPERSEDED SURVEY CONTROL
 HV6060
 HV6060  NAD 83(1986)-  38 44 11.81143(N)    076 11 58.94052(W) AD(       ) 3
 HV6060  NAD 27      -  38 44 11.38800(N)    076 12 00.14100(W) AD(       ) 3
 HV6060  USSD        -  38 44 11.77100(N)    076 11 59.96300(W) AD(       ) 3
 HV6060
 HV6060.Superseded values are not recommended for survey control.
 HV6060
 HV6060.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6060.See file dsdata.pdf to determine how the superseded data were derived.
 HV6060
 HV6060_MARKER: H = DRILL HOLE
 HV6060_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6060_PROJECTION: PROJECTING 10 CENTIMETERS
 HV6060_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6060
 HV6060  HISTORY     - Date     Condition        Report By
 HV6060  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6060  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6060
 HV6060                          STATION DESCRIPTION
 HV6060
 HV6060'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6060'ON THE NORTHERN SHORE OF EDGE CREEK, ON WESTERN SIDE OF ENTRANCE
 HV6060'TO SPENCER CREEK, ABOUT 1-5/8 MILES E OF CEDAR POINT, THE POINT ON
 HV6060'THE S OF WHERE EDGE CREEK ENTERS BROAD CREEK.  STATION IS IN A
 HV6060'CULTIVATED FIELD BEHIND A FRINGE OF LOCUST AND CEDAR TREES, ABOUT
 HV6060'6 FEET ABOVE HIGH WATER, 17 YARDS N OF SHORE, AND 35 YARDS NW OF
 HV6060'EXTREME END OF POINT.  STATION IS MARKED BY A HOLE IN THE CENTER
 HV6060'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6060'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV6060'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6060'TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN
 HV6060'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV6060'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV6060'ARE AS FOLLOWS--E CHIMNEY OF HOUSE, 3/4 MILE, S 38 DEG 51 MIN W.
 HV6060'NAIL IN BLAZE IN 7-INCH LOCUST TREE, 7.58 METERS (24.87 FEET), N
 HV6060'81 DEG 37 MIN W.  E CHIMNEY OF DESERTED HOUSE, 1/4 MILE, N 56 DEG
 HV6060'14 MIN W.  S CHIMNEY OF HOUSE, 1/2 MILE, N 11 DEG 25 MIN W.  W
 HV6060'GABLE OF HAMMOND WHARF HOUSE, 3/8 MILE, N 26 DEG 52 MIN E.  N
 HV6060'CHIMNEY OF HOUSE, 3/4 MILE, N 62 DEG 35 MIN E.  S GABLE OF HOUSE,
 HV6060'5/8 MILE, S 77 DEG 56 MIN E.  N CHIMNEY OF HOUSE, 1 MILE, S 57 DEG
 HV6060'0 MIN E. W CHIMNEY OF HOUSE, 3/4 MILE, S 38 DEG 43 MIN E.  W
 HV6060'CHIMNEY OF HOUSE, 3/4 MILE, S 18 DEG 56 MIN E.  NAIL IN BLAZE IN
 HV6060'6-INCH CEDAR TREE, 3.67 METERS (12.04 FEET), S 10 DEG 44 MIN E.
 HV6060
 HV6060                          STATION RECOVERY (1940)
 HV6060
 HV6060'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6060'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  POSITION AS OBTAINED
 HV6060'WITH SEXTANT FROM POINTS OF REFERENCE, PLACES POSITION OF STATION
 HV6060'UNDER A CAMP BUNK HOUSE AT TRED AVON CAMP.  REFERENCE TREES DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4399 ***********************************************************************
 JU4399  CBN         -  This is a Cooperative Base Network Control Station.
 JU4399  DESIGNATION -  CLARK
 JU4399  PID         -  JU4399
 JU4399  STATE/COUNTY-  MD/KENT
 JU4399  COUNTRY     -  US
 JU4399  USGS QUAD   -  MILLINGTON (2016)
 JU4399
 JU4399                         *CURRENT SURVEY CONTROL
 JU4399  ______________________________________________________________________
 JU4399* NAD 83(2011) POSITION- 39 16 25.15625(N) 075 51 22.97350(W)   ADJUSTED
 JU4399* NAD 83(2011) ELLIP HT-   -15.453 (meters)        (06/27/12)   ADJUSTED
 JU4399* NAD 83(2011) EPOCH   -  2010.00
 JU4399* NAVD 88 ORTHO HEIGHT -    18.156 (meters)       59.57  (feet) ADJUSTED
 JU4399  ______________________________________________________________________
 JU4399  GEOID HEIGHT    -        -33.615 (meters)                     GEOID18
 JU4399  NAD 83(2011) X  -  1,208,116.864 (meters)                     COMP
 JU4399  NAD 83(2011) Y  - -4,794,264.627 (meters)                     COMP
 JU4399  NAD 83(2011) Z  -  4,015,871.655 (meters)                     COMP
 JU4399  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 JU4399  DYNAMIC HEIGHT  -         18.147 (meters)       59.54  (feet) COMP
 JU4399  MODELED GRAVITY -    980,110.1   (mgal)                       NAVD 88
 JU4399
 JU4399  VERT ORDER      -  SECOND    CLASS I
 JU4399
 JU4399  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4399  Standards:
 JU4399         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4399            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4399  -------------------------------------------------------------------
 JU4399  NETWORK    0.23   0.51           0.10   0.09   0.26     -0.03207086
 JU4399  -------------------------------------------------------------------
 JU4399  Click here for local accuracies and other accuracy information.
 JU4399
 JU4399.The horizontal coordinates were established by GPS observations
 JU4399.and adjusted by the National Geodetic Survey in June 2012.
 JU4399
 JU4399.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4399.been affixed to the stable North American tectonic plate. See 
 JU4399.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4399
 JU4399.The horizontal coordinates are valid at the epoch date displayed above
 JU4399.which is a decimal equivalence of Year/Month/Day.
 JU4399
 JU4399.The orthometric height was determined by differential leveling and
 JU4399.adjusted by the NATIONAL GEODETIC SURVEY
 JU4399.in July 1996.
 JU4399
 JU4399.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4399.GEOID18 height accuracy estimate available here.
 JU4399
 JU4399.Click photographs - Photos may exist for this station.
 JU4399
 JU4399.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4399
 JU4399.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4399
 JU4399.The ellipsoidal height was determined by GPS observations
 JU4399.and is referenced to NAD 83.
 JU4399
 JU4399.The dynamic height is computed by dividing the NAVD 88
 JU4399.geopotential number by the normal gravity value computed on the
 JU4399.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4399.degrees latitude (g = 980.6199 gals.).
 JU4399
 JU4399.The modeled gravity was interpolated from observed gravity values.
 JU4399
 JU4399. The following values were computed from the NAD 83(2011) position.
 JU4399
 JU4399;                    North         East     Units Scale Factor Converg.
 JU4399;SPC MD       -   179,003.744   498,679.659   MT  0.99997390   +0 43 04.0
 JU4399;SPC MD       -   587,281.45  1,636,084.85   sFT  0.99997390   +0 43 04.0
 JU4399;UTM  18      - 4,347,494.511   426,130.364   MT  0.99966719   -0 32 31.7
 JU4399
 JU4399!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4399!SPC MD       -   1.00000242  x   0.99997390  =   0.99997632
 JU4399!UTM  18      -   1.00000242  x   0.99966719  =   0.99966961
 JU4399
 JU4399:                Primary Azimuth Mark                     Grid Az
 JU4399:SPC MD       -  CLARK AZ MK                              123 13 15.3
 JU4399:UTM  18      -  CLARK AZ MK                              124 28 51.0
 JU4399
 JU4399_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2613047494(NAD 83)
 JU4399
 JU4399|---------------------------------------------------------------------|
 JU4399| PID    Reference Object                     Distance      Geod. Az  |
 JU4399|                                                           dddmmss.s |
 JU4399| JU4400 CLARK AZ MK                         APPROX. 0.7 KM 1235619.3 |
 JU4399|---------------------------------------------------------------------|
 JU4399
 JU4399                          SUPERSEDED SURVEY CONTROL
 JU4399
 JU4399  NAD 83(2007)-  39 16 25.15643(N)    075 51 22.97422(W) AD(2002.00) 0
 JU4399  ELLIP H (02/10/07)  -15.425  (m)                       GP(2002.00)    
 JU4399  NAD 83(1991)-  39 16 25.15649(N)    075 51 22.97437(W) AD(       ) A
 JU4399  ELLIP H (02/12/02)  -15.423  (m)                       GP(       ) 4 1
 JU4399  NAVD 88              18.16   (m)           59.6    (f) LEVELING    3  
 JU4399
 JU4399.Superseded values are not recommended for survey control.
 JU4399
 JU4399.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4399.See file dsdata.pdf to determine how the superseded data were derived.
 JU4399
 JU4399_MARKER: DD = SURVEY DISK
 JU4399_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4399_STAMPING: CLARK 1989
 JU4399_MARK LOGO: MDSHA
 JU4399_PROJECTION: FLUSH
 JU4399_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4399_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4399+STABILITY: SURFACE MOTION
 JU4399_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4399+SATELLITE: SATELLITE OBSERVATIONS - March 02, 2021
 JU4399
 JU4399  HISTORY     - Date     Condition        Report By
 JU4399  HISTORY     - 1985     MONUMENTED       MDSHA
 JU4399  HISTORY     - 19910301 GOOD             MDSHA
 JU4399  HISTORY     - 20000327 GOOD             MDSHA
 JU4399  HISTORY     - 20020626 GOOD             MDSHA
 JU4399  HISTORY     - 20191002 GOOD             MDSHA
 JU4399  HISTORY     - 20210302 GOOD             MDSHA
 JU4399
 JU4399                          STATION DESCRIPTION
 JU4399
 JU4399'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4399'THE MARKER IS LOCATED ABOUT 1.45 MI (2.33 KM) NORTHWEST OF
 JU4399'MILLINGTON, 3.15 MI (5.07 KM) EAST-SOUTHEAST OF CHESTERVILLE AND
 JU4399'ALONG CARROL CLARK ROAD.  IT IS ON THE PROPERTY OF BETTY S. COLMEN.
 JU4399'TO REACH THE MARKER FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND
 JU4399'MILLINGTON ROAD, GO EAST ON MILLINGTON ROAD FOR 0.25 MI (0.40 KM) TO
 JU4399'CARROL CLARK ROAD ON THE LEFT.  GO NORTH ON CARROL CLARK ROAD FOR
 JU4399'ABOUT 300 FT (91.4 M) TO THE MARKER ON THE RIGHT.  THE POINT IS
 JU4399'MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JU4399'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRTETE MONUMENT WHICH IS
 JU4399'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 32.8 FT (10.0 M) EAST OF
 JU4399'THE CENTER OF CARROL CLARK ROAD, 239.2 FT (72.9 M) NORTHWEST OF A ONE
 JU4399'STORY FRAME HOUSE, 260.4 FT (79.4 M) NORTHEAST OF CHOPTANK POWER POLE
 JU4399'NUMBER 113 31 4 AND 304.5 FT (92.8 M) NORTHEAST OF THE INTERSECTION
 JU4399'OF CARROL CLARK ROAD AND MILLINGTON ROAD.
 JU4399
 JU4399                          STATION RECOVERY (2000)
 JU4399
 JU4399'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JU4399'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.  IT IS ALSO
 JU4399'123.7 FEET (37.7 M) SOUTH OF A POWER POLE WITH NO NUMBERS.
 JU4399
 JU4399                          STATION RECOVERY (2002)
 JU4399
 JU4399'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 JU4399'RECOVERED AS DESCRIBED WITH THE FOLLOWING CORRECTION.  THE STAMPING ON
 JU4399'THE DISK IS CLARK 1989.
 JU4399
 JU4399                          STATION RECOVERY (2019)
 JU4399
 JU4399'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (WAC)
 JU4399'RECOVERED IN GOOD CONDITION.
 JU4399
 JU4399                          STATION RECOVERY (2021)
 JU4399
 JU4399'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JU4399'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4400 ***********************************************************************
 JU4400  DESIGNATION -  CLARK AZ MK
 JU4400  PID         -  JU4400
 JU4400  STATE/COUNTY-  MD/KENT
 JU4400  COUNTRY     -  US
 JU4400  USGS QUAD   -  MILLINGTON (2016)
 JU4400
 JU4400                         *CURRENT SURVEY CONTROL
 JU4400  ______________________________________________________________________
 JU4400* NAD 83(2011) POSITION- 39 16 13.10297(N) 075 50 59.93195(W)   ADJUSTED
 JU4400* NAD 83(2011) ELLIP HT-   -15.629 (meters)        (06/27/12)   ADJUSTED
 JU4400* NAD 83(2011) EPOCH   -  2010.00
 JU4400* NAVD 88 ORTHO HEIGHT -    17.992 (meters)       59.03  (feet) ADJUSTED
 JU4400  ______________________________________________________________________
 JU4400  GEOID HEIGHT    -        -33.626 (meters)                     GEOID18
 JU4400  NAD 83(2011) X  -  1,208,709.904 (meters)                     COMP
 JU4400  NAD 83(2011) Y  - -4,794,357.663 (meters)                     COMP
 JU4400  NAD 83(2011) Z  -  4,015,583.783 (meters)                     COMP
 JU4400  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 JU4400  DYNAMIC HEIGHT  -         17.983 (meters)       59.00  (feet) COMP
 JU4400  MODELED GRAVITY -    980,110.0   (mgal)                       NAVD 88
 JU4400
 JU4400  VERT ORDER      -  SECOND    CLASS I
 JU4400
 JU4400  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4400  Standards:
 JU4400         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4400            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4400  -------------------------------------------------------------------
 JU4400  NETWORK    0.37   0.78           0.16   0.14   0.40      0.00632666
 JU4400  -------------------------------------------------------------------
 JU4400  Click here for local accuracies and other accuracy information.
 JU4400
 JU4400.The horizontal coordinates were established by GPS observations
 JU4400.and adjusted by the National Geodetic Survey in June 2012.
 JU4400
 JU4400.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4400.been affixed to the stable North American tectonic plate. See 
 JU4400.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4400
 JU4400.The horizontal coordinates are valid at the epoch date displayed above
 JU4400.which is a decimal equivalence of Year/Month/Day.
 JU4400
 JU4400.The orthometric height was determined by differential leveling and
 JU4400.adjusted by the NATIONAL GEODETIC SURVEY
 JU4400.in July 1996.
 JU4400
 JU4400.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4400.GEOID18 height accuracy estimate available here.
 JU4400
 JU4400.Click photographs - Photos may exist for this station.
 JU4400
 JU4400.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4400
 JU4400.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4400
 JU4400.The ellipsoidal height was determined by GPS observations
 JU4400.and is referenced to NAD 83.
 JU4400
 JU4400.The dynamic height is computed by dividing the NAVD 88
 JU4400.geopotential number by the normal gravity value computed on the
 JU4400.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4400.degrees latitude (g = 980.6199 gals.).
 JU4400
 JU4400.The modeled gravity was interpolated from observed gravity values.
 JU4400
 JU4400. The following values were computed from the NAD 83(2011) position.
 JU4400
 JU4400;                    North         East     Units Scale Factor Converg.
 JU4400;SPC MD       -   178,639.009   499,236.588   MT  0.99997350   +0 43 18.4
 JU4400;SPC MD       -   586,084.82  1,637,912.04   sFT  0.99997350   +0 43 18.4
 JU4400;UTM  18      - 4,347,117.735   426,678.970   MT  0.99966619   -0 32 17.0
 JU4400
 JU4400!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4400!SPC MD       -   1.00000245  x   0.99997350  =   0.99997595
 JU4400!UTM  18      -   1.00000245  x   0.99966619  =   0.99966864
 JU4400
 JU4400:                Primary Azimuth Mark                     Grid Az
 JU4400:SPC MD       -  CLARK                                    303 13 15.5
 JU4400:UTM  18      -  CLARK                                    304 28 50.9
 JU4400
 JU4400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2667847117(NAD 83)
 JU4400
 JU4400|---------------------------------------------------------------------|
 JU4400| PID    Reference Object                     Distance      Geod. Az  |
 JU4400|                                                           dddmmss.s |
 JU4400| JU4399 CLARK                               APPROX. 0.7 KM 3035633.9 |
 JU4400|---------------------------------------------------------------------|
 JU4400
 JU4400                          SUPERSEDED SURVEY CONTROL
 JU4400
 JU4400  NAD 83(2007)-  39 16 13.10315(N)    075 50 59.93267(W) AD(2002.00) 1
 JU4400  ELLIP H (04/02/09)  -15.602  (m)                       GP(2002.00) 4 1
 JU4400  NAD 83(1991)-  39 16 13.10322(N)    075 50 59.93281(W) AD(       ) 1
 JU4400  ELLIP H (10/15/07)  -15.597  (m)                       GP(       ) 4 1
 JU4400  NAVD 88              17.99   (m)           59.0    (f) LEVELING    3  
 JU4400
 JU4400.Superseded values are not recommended for survey control.
 JU4400
 JU4400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4400.See file dsdata.pdf to determine how the superseded data were derived.
 JU4400
 JU4400_MARKER: DD = SURVEY DISK
 JU4400_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4400_STAMPING: CLARK AZ 1989
 JU4400_MARK LOGO: MDSHA
 JU4400_PROJECTION: FLUSH
 JU4400_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4400_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4400+STABILITY: SURFACE MOTION
 JU4400_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4400+SATELLITE: SATELLITE OBSERVATIONS - November 09, 2021
 JU4400
 JU4400  HISTORY     - Date     Condition        Report By
 JU4400  HISTORY     - 1989     MONUMENTED       MDSHA
 JU4400  HISTORY     - 19910301 GOOD             MDSHA
 JU4400  HISTORY     - 20020626 GOOD             MDSHA
 JU4400  HISTORY     - 20211109 GOOD             MDSHA
 JU4400
 JU4400                          STATION DESCRIPTION
 JU4400
 JU4400'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4400'THE MARKER IS LOCATED ABOUT 1.1 MI (1.8 KM) NORTHEAST OF MILLINGTON,
 JU4400'3.0 MI (4.8 KM) SOUTHWEST OF MASSEY AND ALONG MILLINGTON ROAD.  IT IS
 JU4400'ON ROAD RIGHT-OF-WAY.  TO REACH THE MARKER FROM THE INTERSECTION OF
 JU4400'MILLINGTON ROAD AND CARROL CLARK ROAD, GO EAST ON MILLINGTON ROAD FOR
 JU4400'0.4 MI (0.6 KM) TO THE MARKER ON THE RIGHT.  THE POINT IS MARKED WITH
 JU4400'A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE TOP OF
 JU4400'A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 JU4400'SURFACE OF THE GROUND.  IT IS 22.0 FT (6.7 M) SOUTH OF THE CENTER OF
 JU4400'MILLINGTON ROAD, 9.5 FT (2.9 M) NORTHWEST OF A POWERLINE POLE WITH NO
 JU4400'NUMBER AND 7.0 FT (2.1 M) NORTHWEST OF A UNDERGROUND TELEPHONE CABLE
 JU4400'MARKER NUMBERED 16.
 JU4400
 JU4400                          STATION RECOVERY (2002)
 JU4400
 JU4400'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 JU4400'RECOVERED AS DESCRIBED.
 JU4400
 JU4400                          STATION RECOVERY (2021)
 JU4400
 JU4400'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JU4400'RECOVERED IN GOOD CONDITION. THE MARK IS 9.0 FT (2.7 M) NORTH OF AN
 JU4400'ORANGE WITNESS POST, 8.0 FT (2.4 M) NORTH-NORTHWEST OF A FIBER OPTIC
 JU4400'PEDESTAL NUMBERED 6 SET IN THE TOP OF A 8-IN (20 CM) ROUND CONCRETE
 JU4400'POST AND ABOUT 2 FT (0.6 M) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2274 ***********************************************************************
 JV2274  DESIGNATION -  CLARK RM 1
 JV2274  PID         -  JV2274
 JV2274  STATE/COUNTY-  MD/MONTGOMERY
 JV2274  COUNTRY     -  US
 JV2274  USGS QUAD   -  GERMANTOWN (2016)
 JV2274
 JV2274                         *CURRENT SURVEY CONTROL
 JV2274  ______________________________________________________________________
 JV2274* NAD 83(1986) POSITION- 39 13 52.60   (N) 077 17 06.59   (W)   HD_HELD1
 JV2274* NAVD 88 ORTHO HEIGHT -   200.772 (meters)      658.70  (feet) ADJUSTED
 JV2274  ______________________________________________________________________
 JV2274  GEOID HEIGHT    -        -31.925 (meters)                     GEOID18
 JV2274  DYNAMIC HEIGHT  -        200.666 (meters)      658.35  (feet) COMP
 JV2274  MODELED GRAVITY -    980,091.3   (mgal)                       NAVD 88
 JV2274
 JV2274  VERT ORDER      -  SECOND    CLASS 0
 JV2274
 JV2274.The horizontal coordinates were determined by differentially corrected
 JV2274.hand held GPS observations or other comparable positioning techniques
 JV2274.and have an estimated accuracy of +/- 3 meters.
 JV2274
 JV2274.The orthometric height was determined by differential leveling and
 JV2274.adjusted by the NATIONAL GEODETIC SURVEY
 JV2274.in June 1991.
 JV2274
 JV2274.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2274.GEOID18 height accuracy estimate available here.
 JV2274
 JV2274.Click photographs - Photos may exist for this station.
 JV2274
 JV2274.The dynamic height is computed by dividing the NAVD 88
 JV2274.geopotential number by the normal gravity value computed on the
 JV2274.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2274.degrees latitude (g = 980.6199 gals.).
 JV2274
 JV2274.The modeled gravity was interpolated from observed gravity values.
 JV2274
 JV2274;                    North         East    Units  Estimated Accuracy
 JV2274;SPC MD       -   173,719.5     375,378.7     MT  (+/- 3 meters HH1 GPS) 
 JV2274
 JV2274_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0275844930(NAD 83)
 JV2274
 JV2274                          SUPERSEDED SURVEY CONTROL
 JV2274
 JV2274  NGVD 29 (11/26/84)  200.972  (m)          659.36   (f) ADJUSTED    2 0
 JV2274
 JV2274.Superseded values are not recommended for survey control.
 JV2274
 JV2274.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2274.See file dsdata.pdf to determine how the superseded data were derived.
 JV2274
 JV2274_MARKER: DR = REFERENCE MARK DISK
 JV2274_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2274_STAMPING: CLARK 1958 NO 1
 JV2274_MARK LOGO: CGS
 JV2274_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2274+STABILITY: SURFACE MOTION
 JV2274
 JV2274  HISTORY     - Date     Condition        Report By
 JV2274  HISTORY     - 1958     MONUMENTED       CGS
 JV2274  HISTORY     - 1970     GOOD             NGS
 JV2274
 JV2274                          STATION DESCRIPTION
 JV2274
 JV2274'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2274'0.6 MI S FROM CLARKSBURG.
 JV2274'ABOUT 0.6 MILE SOUTH ALONG STATE HIGHWAY 121 FROM THE
 JV2274'INTERSECTION OF STATE HIGHWAY 355 AT CLARKSBURG, NEAR A LARGE
 JV2274'BRIDGE OVER U.S. HIGHWAY 240, 69.7 FEET SOUTHEAST AND ACROSS
 JV2274'THE HIGHWAY FROM THE STATION, 22 1/2 FEET SOUTHEAST OF THE
 JV2274'CENTER LINE OF THE HIGHWAY, 42.6 FEET SOUTHWEST OF THE SOUTHWEST
 JV2274'END OF BRIDGE, 0.6 FOOT SOUTHEAST OF A STEEL GUARD RAIL, SET IN
 JV2274'THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND AND ABOUT
 JV2274'LEVEL WITH THE HIGHWAY.
 JV2274
 JV2274                          STATION RECOVERY (1970)
 JV2274
 JV2274'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 JV2274'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2272 ***********************************************************************
 JV2272  DESIGNATION -  CLARK RM 2
 JV2272  PID         -  JV2272
 JV2272  STATE/COUNTY-  MD/MONTGOMERY
 JV2272  COUNTRY     -  US
 JV2272  USGS QUAD   -  GERMANTOWN (2016)
 JV2272
 JV2272                         *CURRENT SURVEY CONTROL
 JV2272  ______________________________________________________________________
 JV2272* NAD 83(1986) POSITION- 39 13 52.56   (N) 077 17 07.95   (W)   HD_HELD1
 JV2272* NAVD 88 ORTHO HEIGHT -   199.892 (meters)      655.81  (feet) ADJUSTED
 JV2272  ______________________________________________________________________
 JV2272  GEOID HEIGHT    -        -31.925 (meters)                     GEOID18
 JV2272  DYNAMIC HEIGHT  -        199.786 (meters)      655.46  (feet) COMP
 JV2272  MODELED GRAVITY -    980,091.3   (mgal)                       NAVD 88
 JV2272
 JV2272  VERT ORDER      -  SECOND    CLASS 0
 JV2272
 JV2272.The horizontal coordinates were determined by differentially corrected
 JV2272.hand held GPS observations or other comparable positioning techniques
 JV2272.and have an estimated accuracy of +/- 3 meters.
 JV2272
 JV2272.The orthometric height was determined by differential leveling and
 JV2272.adjusted by the NATIONAL GEODETIC SURVEY
 JV2272.in June 1991.
 JV2272
 JV2272.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2272.GEOID18 height accuracy estimate available here.
 JV2272
 JV2272.Click photographs - Photos may exist for this station.
 JV2272
 JV2272.The dynamic height is computed by dividing the NAVD 88
 JV2272.geopotential number by the normal gravity value computed on the
 JV2272.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2272.degrees latitude (g = 980.6199 gals.).
 JV2272
 JV2272.The modeled gravity was interpolated from observed gravity values.
 JV2272
 JV2272;                    North         East    Units  Estimated Accuracy
 JV2272;SPC MD       -   173,718.4     375,346.1     MT  (+/- 3 meters HH1 GPS) 
 JV2272
 JV2272_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0272644930(NAD 83)
 JV2272
 JV2272                          SUPERSEDED SURVEY CONTROL
 JV2272
 JV2272  NGVD 29 (11/26/84)  200.093  (m)          656.47   (f) ADJUSTED    2 0
 JV2272
 JV2272.Superseded values are not recommended for survey control.
 JV2272
 JV2272.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2272.See file dsdata.pdf to determine how the superseded data were derived.
 JV2272
 JV2272_MARKER: DR = REFERENCE MARK DISK
 JV2272_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2272_STAMPING: CLARK NO 2 1958
 JV2272_MARK LOGO: CGS
 JV2272_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2272+STABILITY: SURFACE MOTION
 JV2272
 JV2272  HISTORY     - Date     Condition        Report By
 JV2272  HISTORY     - 1958     MONUMENTED       CGS
 JV2272  HISTORY     - 1970     GOOD             NGS
 JV2272
 JV2272                          STATION DESCRIPTION
 JV2272
 JV2272'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2272'0.6 MI S FROM CLARKSBURG.
 JV2272'ABOUT 0.6 MILE SOUTH ALONG STATE HIGHWAY 121 FROM THE INTERSECTION
 JV2272'OF STATE HIGHWAY 355 AT CLARKSBURG, NEAR A LARGE BRIDGE OVER
 JV2272'U.S. HIGHWAY 240, 72.8 FEET SOUTHWEST OF THE STATION, 55 1/2
 JV2272'FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 42.3 FEET
 JV2272'NORTHWEST OF THE EXTREME NORTHEAST END OF CURBING FOR A SMALL
 JV2272'TRIANGLE, 2 FEET BELOW THE LEVEL OF THE HIGHWAY AND SET IN THE
 JV2272'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV2272
 JV2272                          STATION RECOVERY (1970)
 JV2272
 JV2272'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 JV2272'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4457 ***********************************************************************
 JV4457  DESIGNATION -  CLARKSBURG METH CH SPIRE
 JV4457  PID         -  JV4457
 JV4457  STATE/COUNTY-  MD/MONTGOMERY
 JV4457  COUNTRY     -  US
 JV4457  USGS QUAD   -  GERMANTOWN (2016)
 JV4457
 JV4457                         *CURRENT SURVEY CONTROL
 JV4457  ______________________________________________________________________
 JV4457* NAD 83(1993) POSITION- 39 14 27.15562(N) 077 16 46.59894(W)   ADJUSTED
 JV4457  ______________________________________________________________________
 JV4457  GEOID HEIGHT    -        -31.927 (meters)                     GEOID18
 JV4457  LAPLACE CORR    -          4.03  (seconds)                    DEFLEC18
 JV4457  HORZ ORDER      -  THIRD
 JV4457
 JV4457.The horizontal coordinates were established by classical geodetic methods
 JV4457.and adjusted by the National Geodetic Survey in November 1994.
 JV4457
 JV4457.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4457.GEOID18 height accuracy estimate available here.
 JV4457
 JV4457.Click photographs - Photos may exist for this station.
 JV4457
 JV4457.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4457
 JV4457. The following values were computed from the NAD 83(1993) position.
 JV4457
 JV4457;                    North         East     Units Scale Factor Converg.
 JV4457;SPC MD       -   174,783.678   375,861.421   MT  0.99997010   -0 10 31.8
 JV4457;SPC MD       -   573,436.12  1,233,138.68   sFT  0.99997010   -0 10 31.8
 JV4457;UTM  18      - 4,345,983.940   303,265.062   MT  1.00007658   -1 26 33.0
 JV4457
 JV4457_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0326545983(NAD 83)
 JV4457
 JV4457                          SUPERSEDED SURVEY CONTROL
 JV4457
 JV4457  NAD 83(1991)-  39 14 27.15487(N)    077 16 46.59862(W) AD(       ) 3
 JV4457  NAD 83(1986)-  39 14 27.15512(N)    077 16 46.60955(W) AD(       ) 3
 JV4457  NAD 27      -  39 14 26.77451(N)    077 16 47.66067(W) AD(       ) 3
 JV4457
 JV4457.Superseded values are not recommended for survey control.
 JV4457
 JV4457.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4457.See file dsdata.pdf to determine how the superseded data were derived.
 JV4457
 JV4457_MARKER: 90 = CHURCH SPIRE
 JV4457_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4457+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4457
 JV4457  HISTORY     - Date     Condition        Report By
 JV4457  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4457  HISTORY     - 1983     GOOD             USPSQD
 JV4457  HISTORY     - 20031102 GOOD             USPSQD
 JV4457  HISTORY     - 20050303 GOOD             USPSQD
 JV4457
 JV4457                          STATION DESCRIPTION
 JV4457
 JV4457'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4457'THE STATION IS THE APEX OF THE CLARKSBURG METHODIST CHURCH
 JV4457'SPIRE.  IT IS ABOUT 67 FEET ABOVE THE GROUND.
 JV4457'
 JV4457'THE STATION IS LOCATED 0.15 MILE EAST OF THE INTERSECTION OF STATE
 JV4457'HIGHWAY 121 AND STATE HIGHWAY 355.
 JV4457
 JV4457                          STATION RECOVERY (1983)
 JV4457
 JV4457'RECOVERY NOTE BY US POWER SQUADRON 1983 (RWS)
 JV4457'STATION RECOVERED GOOD.
 JV4457'
 JV4457'NO APPARENT CHANGES FROM ORIGINAL DESCRIPTION.
 JV4457
 JV4457                          STATION RECOVERY (2003)
 JV4457
 JV4457'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4457'RECOVERED IN GOOD CONDITION.
 JV4457
 JV4457                          STATION RECOVERY (2005)
 JV4457
 JV4457'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4457'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6015 ***********************************************************************
 JV6015  DESIGNATION -  CLARKSVILLE ATT MICROWAVE
 JV6015  PID         -  JV6015
 JV6015  STATE/COUNTY-  MD/HOWARD
 JV6015  COUNTRY     -  US
 JV6015  USGS QUAD   -  CLARKSVILLE (2016)
 JV6015
 JV6015                         *CURRENT SURVEY CONTROL
 JV6015  ______________________________________________________________________
 JV6015* NAD 83(1993) POSITION- 39 13 08.76217(N) 076 58 29.07064(W)   ADJUSTED
 JV6015  ______________________________________________________________________
 JV6015  GEOID HEIGHT    -        -31.958 (meters)                     GEOID18
 JV6015  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 JV6015  HORZ ORDER      -  THIRD
 JV6015
 JV6015.The horizontal coordinates were established by classical geodetic methods
 JV6015.and adjusted by the National Geodetic Survey in November 1994.
 JV6015
 JV6015.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6015.GEOID18 height accuracy estimate available here.
 JV6015
 JV6015.Click photographs - Photos may exist for this station.
 JV6015
 JV6015.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6015
 JV6015. The following values were computed from the NAD 83(1993) position.
 JV6015
 JV6015;                    North         East     Units Scale Factor Converg.
 JV6015;SPC MD       -   172,329.524   402,181.189   MT  0.99996776   +0 00 57.1
 JV6015;SPC MD       -   565,384.45  1,319,489.45   sFT  0.99996776   +0 00 57.1
 JV6015;UTM  18      - 4,342,948.792   329,525.421   MT  0.99995784   -1 14 56.1
 JV6015
 JV6015_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2952542948(NAD 83)
 JV6015
 JV6015                          SUPERSEDED SURVEY CONTROL
 JV6015
 JV6015  NAD 83(1991)-  39 13 08.76394(N)    076 58 29.05892(W) AD(       ) 3
 JV6015  NAD 83(1986)-  39 13 08.76492(N)    076 58 29.06926(W) AD(       ) 3
 JV6015  NAD 27      -  39 13 08.37898(N)    076 58 30.16458(W) AD(       ) 3
 JV6015
 JV6015.Superseded values are not recommended for survey control.
 JV6015
 JV6015.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6015.See file dsdata.pdf to determine how the superseded data were derived.
 JV6015
 JV6015_MARKER: 45 = MICROWAVE TOWER
 JV6015
 JV6015  HISTORY     - Date     Condition        Report By
 JV6015  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV6015  HISTORY     - 1980     GOOD             NGS
 JV6015  HISTORY     - 19920819 GOOD             USPSQD
 JV6015  HISTORY     - 20061001 GOOD             GEOCAC
 JV6015
 JV6015                          STATION DESCRIPTION
 JV6015
 JV6015'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV6015'THE STATION IS THE RED LIGHT MOUNTED ON TOP OF THE CLARKSVILLE
 JV6015'AMERICAN TELEPHONE AND TELEGRAPH MICROWAVE KGO 32.  IT IS 237
 JV6015'FEET ABOVE THE GROUND.
 JV6015'
 JV6015'THE STATION IS LOCATED 0.2 MILE SOUTHERLY FROM THE
 JV6015'INTERSECTION OF HIGHLAND ROAD AND TEN OAKS ROAD.
 JV6015
 JV6015                          STATION RECOVERY (1980)
 JV6015
 JV6015'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 (RGP)
 JV6015'RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV6015
 JV6015                          STATION RECOVERY (1992)
 JV6015
 JV6015'RECOVERY NOTE BY US POWER SQUADRON 1992 (DTH)
 JV6015'RECOVERED IN GOOD CONDITION.
 JV6015
 JV6015                          STATION RECOVERY (2006)
 JV6015
 JV6015'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JV6015'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7040 ***********************************************************************
 JV7040  DESIGNATION -  CLARKSVILLE CBL 0
 JV7040  PID         -  JV7040
 JV7040  STATE/COUNTY-  MD/HOWARD
 JV7040  COUNTRY     -  US
 JV7040  USGS QUAD   -  SYKESVILLE (2016)
 JV7040
 JV7040                         *CURRENT SURVEY CONTROL
 JV7040  ______________________________________________________________________
 JV7040* NAD 83(2011) POSITION- 39 15 06.17997(N) 076 55 49.95688(W)   ADJUSTED
 JV7040* NAD 83(2011) ELLIP HT-    79.075 (meters)        (06/27/12)   ADJUSTED
 JV7040* NAD 83(2011) EPOCH   -  2010.00
 JV7040* NAVD 88 ORTHO HEIGHT -   111.1   (meters)      365.    (feet) VERTCON3
 JV7040  ______________________________________________________________________
 JV7040  GEOID HEIGHT    -        -32.025 (meters)                     GEOID18
 JV7040  NAD 83(2011) X  -  1,118,393.672 (meters)                     COMP
 JV7040  NAD 83(2011) Y  - -4,817,642.940 (meters)                     COMP
 JV7040  NAD 83(2011) Z  -  4,014,045.738 (meters)                     COMP
 JV7040  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 JV7040
 JV7040  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7040  Standards:
 JV7040         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7040            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7040  -------------------------------------------------------------------
 JV7040  NETWORK    1.51   2.63           0.68   0.54   1.34      0.11944470
 JV7040  -------------------------------------------------------------------
 JV7040  Click here for local accuracies and other accuracy information.
 JV7040
 JV7040.The horizontal coordinates were established by GPS observations
 JV7040.and adjusted by the National Geodetic Survey in June 2012.
 JV7040
 JV7040.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7040.been affixed to the stable North American tectonic plate. See 
 JV7040.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7040
 JV7040.The horizontal coordinates are valid at the epoch date displayed above
 JV7040.which is a decimal equivalence of Year/Month/Day.
 JV7040
 JV7040.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV7040.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV7040
 JV7040.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7040.GEOID18 height accuracy estimate available here.
 JV7040
 JV7040.Click photographs - Photos may exist for this station.
 JV7040
 JV7040.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7040
 JV7040.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7040
 JV7040.The ellipsoidal height was determined by GPS observations
 JV7040.and is referenced to NAD 83.
 JV7040
 JV7040. The following values were computed from the NAD 83(2011) position.
 JV7040
 JV7040;                    North         East     Units Scale Factor Converg.
 JV7040;SPC MD       -   175,952.426   405,995.211   MT  0.99997132   +0 02 36.9
 JV7040;SPC MD       -   577,270.58  1,332,002.62   sFT  0.99997132   +0 02 36.9
 JV7040;UTM  18      - 4,346,486.536   333,418.422   MT  0.99994168   -1 13 18.4
 JV7040
 JV7040!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7040!SPC MD       -   0.99998759  x   0.99997132  =   0.99995891
 JV7040!UTM  18      -   0.99998759  x   0.99994168  =   0.99992927
 JV7040
 JV7040:                Primary Azimuth Mark                     Grid Az
 JV7040:SPC MD       -  CLARKSVILLE CBL 1100                     027 37 04.8
 JV7040:UTM  18      -  CLARKSVILLE CBL 1100                     028 53 00.1
 JV7040
 JV7040_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3341846486(NAD 83)
 JV7040
 JV7040|---------------------------------------------------------------------|
 JV7040| PID    Reference Object                     Distance      Geod. Az  |
 JV7040|                                                           dddmmss.s |
 JV7040| JV7041 CLARKSVILLE CBL 1100                APPROX. 1.1 KM 0273941.7 |
 JV7040|---------------------------------------------------------------------|
 JV7040
 JV7040                          SUPERSEDED SURVEY CONTROL
 JV7040
 JV7040  NAD 83(2007)-  39 15 06.18022(N)    076 55 49.95768(W) AD(2002.00) 0
 JV7040  ELLIP H (02/10/07)   79.115  (m)                       GP(2002.00)    
 JV7040  ELLIP H (08/30/02)   79.116  (m)                       GP(       ) 4 2
 JV7040  NAD 83(1991)-  39 15 06.17997(N)    076 55 49.95744(W) AD(       ) 1
 JV7040  ELLIP H (02/23/93)   79.030  (m)                       GP(       ) 4 2
 JV7040  NGVD 29 (02/23/93)  111.3    (m)  GEOID90  model used  GPS OBS        
 JV7040
 JV7040.Superseded values are not recommended for survey control.
 JV7040
 JV7040.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7040.See file dsdata.pdf to determine how the superseded data were derived.
 JV7040
 JV7040_MARKER: DQ = CALIBRATION BASE LINE DISK
 JV7040_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7040_STAMPING: 0 POINT 1988
 JV7040_MARK LOGO: NGS
 JV7040_MAGNETIC: A = STEEL ROD ADJACENT TO MONUMENT
 JV7040_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7040+STABILITY: SURFACE MOTION
 JV7040_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7040+SATELLITE: SATELLITE OBSERVATIONS - September 28, 2010
 JV7040
 JV7040  HISTORY     - Date     Condition        Report By
 JV7040  HISTORY     - 1988     MONUMENTED       NGS
 JV7040  HISTORY     - 19920606 GOOD             MD-027
 JV7040  HISTORY     - 19981130 GOOD             DMW
 JV7040  HISTORY     - 20100928 GOOD             GPSSS
 JV7040  HISTORY     - 20160801 GOOD             GPI
 JV7040
 JV7040                          STATION DESCRIPTION
 JV7040
 JV7040'DESCRIBED BY HOWARD COUNTY MARYLAND 1992
 JV7040'THE STATION IS LOCATED 5.3 KM (3.30 MI) NORTH OF CLARKSVILLE, 10.1 KM
 JV7040'(6.25 MI) EASTSOUTHEAST OF ELLICOTT CITY AND EAST OF FOLLY QUARTER
 JV7040'ROAD AT THE UNIVERSITY OF MARYLAND CENTRAL FARM. OWNERSHIP--
 JV7040'UNIVERSITY OF MARYLAND CENTRAL FARM.
 JV7040'THE STATION BELONGS TO THE ELECTRONIC DISTANCE METERS CALIBRATION
 JV7040'BASELINE AT FOLLY QUARTER ROAD, IT IS THE 00 MTS MARK.
 JV7040'TO REACH THE STATION FROM THE POST OFFICE AT CLARKSVILLE ON STATE
 JV7040'HIGHWAY 108, GO 0.8 KM (0.50 MI) NORTHEAST ON STATE HIGHWAY 108 TO
 JV7040'SHEPPARD LANE, TURN RIGHT AND GO 4.3 KM (2.65 MI) NORTHERLY ON
 JV7040'SHEPPARD LANE TO INTERSECTION WITH HOMEWOOD ROAD. CONTINUE STRAIGHT
 JV7040'ON FOLLY QUARTER ROAD FOR 0.34 KM (0.20 MI)  TO THE STATION ON THE
 JV7040'RIGHT.
 JV7040'THE STATION IS 4.2 FT (1.3 M)  NORTHEAST OF A WITNESS POST, 3.1 FT
 JV7040'(0.9 M) NORTH EAST OF A CHESAPEAKE AND POTOMAC COMPANY TELEPHONE POLE
 JV7040'NUMBER O7 AND 19.5 FT (5.9 M) SOUTH EAST OF THE CENTERLINE OF FOLLY
 JV7040'QUARTER ROAD.
 JV7040'THE STATION IS A STANDARD NGS CALLIBRATION BASELINE DISC STAMPED 0 M
 JV7040'(0.0 FT) 1988 SET ON TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV7040'CALIBRATION B.L. STA 1100 STATION SERVES AS AZIMUTH  MARK STATIONS FOR
 JV7040'THIS STATION.
 JV7040
 JV7040                          STATION RECOVERY (1998)
 JV7040
 JV7040'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 JV7040'RECOVERED IN GOOD CONDITION.
 JV7040
 JV7040                          STATION RECOVERY (2010)
 JV7040
 JV7040'RECOVERY NOTE BY GPS SALES AND SERVICES 2010 (DL)
 JV7040'RECOVERED BY DEWEY LILLY OF NORTHERN BAY SURVEYS
 JV7040
 JV7040                          STATION RECOVERY (2016)
 JV7040
 JV7040'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2016 (LJB)
 JV7040'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7041 ***********************************************************************
 JV7041  DESIGNATION -  CLARKSVILLE CBL 1100
 JV7041  PID         -  JV7041
 JV7041  STATE/COUNTY-  MD/HOWARD
 JV7041  COUNTRY     -  US
 JV7041  USGS QUAD   -  SYKESVILLE (2016)
 JV7041
 JV7041                         *CURRENT SURVEY CONTROL
 JV7041  ______________________________________________________________________
 JV7041* NAD 83(2011) POSITION- 39 15 37.77118(N) 076 55 28.65652(W)   ADJUSTED
 JV7041* NAD 83(2011) ELLIP HT-    85.355 (meters)        (06/27/12)   ADJUSTED
 JV7041* NAD 83(2011) EPOCH   -  2010.00
 JV7041* NAVD 88 ORTHO HEIGHT -   117.4   (meters)      385.    (feet) GPS OBS
 JV7041  ______________________________________________________________________
 JV7041  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7041  GEOID HEIGHT    -        -32.007 (meters)                     GEOID99
 JV7041  GEOID HEIGHT    -        -32.030 (meters)                     GEOID18
 JV7041  NAD 83(2011) X  -  1,118,752.799 (meters)                     COMP
 JV7041  NAD 83(2011) Y  - -4,816,931.645 (meters)                     COMP
 JV7041  NAD 83(2011) Z  -  4,014,804.101 (meters)                     COMP
 JV7041  LAPLACE CORR    -         -3.29  (seconds)                    DEFLEC18
 JV7041
 JV7041  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7041  Standards:
 JV7041         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7041            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7041  -------------------------------------------------------------------
 JV7041  NETWORK    1.15   1.31           0.50   0.44   0.67     -0.11128543
 JV7041  -------------------------------------------------------------------
 JV7041  Click here for local accuracies and other accuracy information.
 JV7041
 JV7041.The horizontal coordinates were established by GPS observations
 JV7041.and adjusted by the National Geodetic Survey in June 2012.
 JV7041
 JV7041.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7041.been affixed to the stable North American tectonic plate. See 
 JV7041.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7041
 JV7041.The horizontal coordinates are valid at the epoch date displayed above
 JV7041.which is a decimal equivalence of Year/Month/Day.
 JV7041
 JV7041.The orthometric height was determined by GPS observations and a
 JV7041.high-resolution geoid model.
 JV7041
 JV7041.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7041.GEOID18 height accuracy estimate available here.
 JV7041
 JV7041.Click photographs - Photos may exist for this station.
 JV7041
 JV7041.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7041
 JV7041.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7041
 JV7041.The ellipsoidal height was determined by GPS observations
 JV7041.and is referenced to NAD 83.
 JV7041
 JV7041. The following values were computed from the NAD 83(2011) position.
 JV7041
 JV7041;                    North         East     Units Scale Factor Converg.
 JV7041;SPC MD       -   176,927.044   406,505.119   MT  0.99997234   +0 02 50.3
 JV7041;SPC MD       -   580,468.14  1,333,675.54   sFT  0.99997234   +0 02 50.3
 JV7041;UTM  18      - 4,347,449.625   333,949.714   MT  0.99993950   -1 13 05.8
 JV7041
 JV7041!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7041!SPC MD       -   0.99998661  x   0.99997234  =   0.99995895
 JV7041!UTM  18      -   0.99998661  x   0.99993950  =   0.99992611
 JV7041
 JV7041:                Primary Azimuth Mark                     Grid Az
 JV7041:SPC MD       -  CLARKSVILLE CBL 0                        207 37 04.8
 JV7041:UTM  18      -  CLARKSVILLE CBL 0                        208 53 00.9
 JV7041
 JV7041_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3394947449(NAD 83)
 JV7041
 JV7041|---------------------------------------------------------------------|
 JV7041| PID    Reference Object                     Distance      Geod. Az  |
 JV7041|                                                           dddmmss.s |
 JV7041| JV7040 CLARKSVILLE CBL 0                   APPROX. 1.1 KM 2073955.1 |
 JV7041|---------------------------------------------------------------------|
 JV7041
 JV7041                          SUPERSEDED SURVEY CONTROL
 JV7041
 JV7041  NAD 83(2007)-  39 15 37.77110(N)    076 55 28.65714(W) AD(2002.00) 0
 JV7041  ELLIP H (02/10/07)   85.382  (m)                       GP(2002.00)    
 JV7041  ELLIP H (08/30/02)   85.380  (m)                       GP(       ) 4 2
 JV7041  NAD 83(1991)-  39 15 37.77070(N)    076 55 28.65685(W) AD(       ) 1
 JV7041  ELLIP H (02/23/93)   85.299  (m)                       GP(       ) 4 2
 JV7041  NGVD 29 (02/23/93)  117.6    (m)  GEOID90  model used  GPS OBS        
 JV7041
 JV7041.Superseded values are not recommended for survey control.
 JV7041
 JV7041.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7041.See file dsdata.pdf to determine how the superseded data were derived.
 JV7041
 JV7041_MARKER: DQ = CALIBRATION BASE LINE DISK
 JV7041_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7041_STAMPING: 1100 M 1988
 JV7041_MARK LOGO: NGS
 JV7041_PROJECTION: FLUSH
 JV7041_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7041_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7041+STABILITY: SURFACE MOTION
 JV7041_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7041+SATELLITE: SATELLITE OBSERVATIONS - August 01, 2016
 JV7041
 JV7041  HISTORY     - Date     Condition        Report By
 JV7041  HISTORY     - 1988     MONUMENTED       NGS
 JV7041  HISTORY     - 19901125 GOOD             MD-027
 JV7041  HISTORY     - 19910117 GOOD
 JV7041  HISTORY     - 19981130 GOOD             DMW
 JV7041  HISTORY     - 20000915 GOOD             MD-027
 JV7041  HISTORY     - 20160801 GOOD             GPI
 JV7041
 JV7041                          STATION DESCRIPTION
 JV7041
 JV7041'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV7041'THE STATION IS LOCATED 5.3 KM (3.30 MI) NORTH OF CLARKSVILLE, 10.1 KM
 JV7041'(6.25 MI) EASTSOUTHEAST OF ELLICOTT CITY AND EAST OF FOLLY QUARTER
 JV7041'ROAD AT THE UNIVERSITY OF MARYLAND CENTRAL FARM. OWNERSHIP--
 JV7041'UNIVERSITY OF MARYLAND CENTRAL FARM.
 JV7041'THE STATION BELONGS TO THE ELECTRONIC DISTANCE METERS CALIBRATION
 JV7041'BASELINE AT FOLLY QUARTER ROAD, IT IS THE 1100 MTS MARK.
 JV7041'TO REACH THE STATION FROM THE POST OFFICE AT CLARKSVILLE ON STATE
 JV7041'HIGHWAY 108, GO 0.8 KM (0.50 MI) NORTHEAST ON STATE HIGHWAY 108 TO
 JV7041'SHEPPARD LANE, TURN RIGHT AND GO 4.3 KM (2.65 MI) NORTHERLY ON
 JV7041'SHEPPARD LANE TO INTERSECTION WITH HOMEWOOD ROAD. CONTINUE STRAIGHT
 JV7041'ON FOLLY QUARTER ROAD FOR 1.34 KM (0.85 MI) TO THE STATION ON THE
 JV7041'RIGHT.
 JV7041'THE STATION IS 11.2 M (36.7 FT) NORTHEAST OF A WITNESS POST AND
 JV7041'TELEPHONE POLE AND 11.2 M (36.7 FT) SOUTH EAST OF THE CENTERLINE OF
 JV7041'FOLLY QUARTER ROAD.
 JV7041'THE STATION IS A STANDARD NGS CALIBRATION BASELINE DISC STAMPED 1100 M
 JV7041'(3608.9 FT) 1988 SET ON TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV7041'CALIBRATION B.L. STA 00 STATION SERVES AS AZIMUTH  MARK STATIONS FOR
 JV7041'THIS STATION.
 JV7041
 JV7041                          STATION RECOVERY (1991)
 JV7041
 JV7041'RECOVERED 1991
 JV7041'RECOVERED IN GOOD CONDITION.
 JV7041
 JV7041                          STATION RECOVERY (1998)
 JV7041
 JV7041'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 JV7041'RECOVERED IN GOOD CONDITION.
 JV7041
 JV7041                          STATION RECOVERY (2000)
 JV7041
 JV7041'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV7041'RECOVERY BY  HOWARD COUNTY ,2000   RECOVERED AS DESCRIBED IN
 JV7041'GOOD CONDITION
 JV7041'
 JV7041
 JV7041                          STATION RECOVERY (2016)
 JV7041
 JV7041'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2016 (LJB)
 JV7041'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6061 ***********************************************************************
 JV6061  DESIGNATION -  CLARKSVILLE TRANSC GAS PIPE TR
 JV6061  PID         -  JV6061
 JV6061  STATE/COUNTY-  MD/HOWARD
 JV6061  COUNTRY     -  US
 JV6061  USGS QUAD   -  SYKESVILLE (2016)
 JV6061
 JV6061                         *CURRENT SURVEY CONTROL
 JV6061  ______________________________________________________________________
 JV6061* NAD 83(1991) POSITION- 39 16 01.53733(N) 076 55 55.53384(W)   ADJUSTED
 JV6061  ______________________________________________________________________
 JV6061  GEOID HEIGHT    -        -32.013 (meters)                     GEOID18
 JV6061  LAPLACE CORR    -         -3.47  (seconds)                    DEFLEC18
 JV6061  HORZ ORDER      -  THIRD
 JV6061
 JV6061.The horizontal coordinates were established by classical geodetic methods
 JV6061.and adjusted by the National Geodetic Survey in January 1992.
 JV6061
 JV6061.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6061.GEOID18 height accuracy estimate available here.
 JV6061
 JV6061.Click photographs - Photos may exist for this station.
 JV6061
 JV6061.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6061
 JV6061. The following values were computed from the NAD 83(1991) position.
 JV6061
 JV6061;                    North         East     Units Scale Factor Converg.
 JV6061;SPC MD       -   177,659.444   405,860.224   MT  0.99997312   +0 02 33.4
 JV6061;SPC MD       -   582,871.03  1,331,559.75   sFT  0.99997312   +0 02 33.4
 JV6061;UTM  18      - 4,348,196.066   333,321.174   MT  0.99994208   -1 13 23.4
 JV6061
 JV6061_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3332148196(NAD 83)
 JV6061
 JV6061                          SUPERSEDED SURVEY CONTROL
 JV6061
 JV6061  NAD 83(1986)-  39 16 01.53561(N)    076 55 55.54378(W) AD(       ) 3
 JV6061  NAD 27      -  39 16 01.14951(N)    076 55 56.62023(W) AD(       ) 3
 JV6061
 JV6061.Superseded values are not recommended for survey control.
 JV6061
 JV6061.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6061.See file dsdata.pdf to determine how the superseded data were derived.
 JV6061
 JV6061_MARKER: 43 = RADIO/TV TOWER
 JV6061
 JV6061  HISTORY     - Date     Condition        Report By
 JV6061  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV6061  HISTORY     - 1974     GOOD             NGS
 JV6061
 JV6061                          STATION DESCRIPTION
 JV6061
 JV6061'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6061'STATION IS LOCATED ABOUT 4 MILES NORTH OF CLARKSVILLE.  IT IS A
 JV6061'STEEL STRUCTURE, 350 FEET HIGH AND PAINTED RED AND WHITE.
 JV6061'
 JV6061'THE POINT INTERSECTED WAS THE RED LIGHT AT TOP OF TOWER.
 JV6061'
 JV6061'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY 29 AND STATE HIGHWAY
 JV6061'32 IN THE SOUTH EDGE OF CLARKSVILLE, GO NORTH ON HIGHWAY 29 FOR
 JV6061'1.0 MILE TO A SIDE ROAD LEFT(SHEPPARDS LANE), TURN LEFT ON
 JV6061'SHEPPARDS LANE 3.4 MILES TO CROSSROAD AND STOP SIGN.  HERE
 JV6061'CONTINUE STRAIGHT AHEAD 1.35 MILES TO A SIDE ROAD LEFT, TURN
 JV6061'LEFT 0.4 MILE TO THE STATION.
 JV6061
 JV6061                          STATION RECOVERY (1974)
 JV6061
 JV6061'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV6061'THIS STATION WAS NOT VISITED AT THIS DATE, HOWEVER ITS POSITION
 JV6061'WAS VERIFIED FROM TRIANGULATION STATIONS BALTO NAT PIKE NO 4-2
 JV6061'1971 AND BALTO NAT PIKE NO 5-2 1971.
 JV6061'
 JV6061'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV6061'4 MILES NORTH OF CLARKSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4089 ***********************************************************************
 JV4089  DESIGNATION -  CLASS A
 JV4089  PID         -  JV4089
 JV4089  STATE/COUNTY-  MD/MONTGOMERY
 JV4089  COUNTRY     -  US
 JV4089  USGS QUAD   -  GAITHERSBURG (2016)
 JV4089
 JV4089                         *CURRENT SURVEY CONTROL
 JV4089  ______________________________________________________________________
 JV4089* NAD 83(1986) POSITION- 39 08 04.     (N) 077 12 45.     (W)   SCALED
 JV4089* NAVD 88 ORTHO HEIGHT -   137.492 (meters)      451.09  (feet) ADJUSTED
 JV4089  ______________________________________________________________________
 JV4089  GEOID HEIGHT    -        -31.740 (meters)                     GEOID18
 JV4089  DYNAMIC HEIGHT  -        137.420 (meters)      450.85  (feet) COMP
 JV4089  MODELED GRAVITY -    980,100.6   (mgal)                       NAVD 88
 JV4089
 JV4089  VERT ORDER      -  FIRST     CLASS I
 JV4089
 JV4089.The horizontal coordinates were scaled from a map and have
 JV4089.an estimated accuracy of +/- 6 seconds.
 JV4089
 JV4089.The orthometric height was determined by differential leveling and
 JV4089.adjusted by the NATIONAL GEODETIC SURVEY
 JV4089.in July 1994.
 JV4089
 JV4089.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4089.GEOID18 height accuracy estimate available here.
 JV4089
 JV4089.Click photographs - Photos may exist for this station.
 JV4089
 JV4089.The dynamic height is computed by dividing the NAVD 88
 JV4089.geopotential number by the normal gravity value computed on the
 JV4089.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV4089.degrees latitude (g = 980.6199 gals.).
 JV4089
 JV4089.The modeled gravity was interpolated from observed gravity values.
 JV4089
 JV4089;                    North         East    Units  Estimated Accuracy
 JV4089;SPC MD       -   162,950.      381,630.      MT  (+/- 180 meters Scaled)
 JV4089
 JV4089_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ087340(NAD 83)
 JV4089
 JV4089                          SUPERSEDED SURVEY CONTROL
 JV4089
 JV4089  NAVD 88 (06/15/91)  137.491  (m)          451.09   (f) SUPERSEDED  1 1
 JV4089
 JV4089.Superseded values are not recommended for survey control.
 JV4089
 JV4089.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4089.See file dsdata.pdf to determine how the superseded data were derived.
 JV4089
 JV4089_MARKER: I = METAL ROD
 JV4089_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV4089_STAMPING: CLASS A 1978
 JV4089_MARK LOGO: NGS
 JV4089_PROJECTION: FLUSH
 JV4089_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4089_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4089+STABILITY: POSITION/ELEVATION WELL
 JV4089_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4089+SATELLITE: SATELLITE OBSERVATIONS - September 12, 1997
 JV4089_ROD/PIPE-DEPTH: 7.6 meters
 JV4089_SLEEVE-DEPTH  : 4.5 meters
 JV4089
 JV4089  HISTORY     - Date     Condition        Report By
 JV4089  HISTORY     - 1978     MONUMENTED       NGS
 JV4089  HISTORY     - 19891017 GOOD             NGS
 JV4089  HISTORY     - 19911015 GOOD             NGS
 JV4089  HISTORY     - 19970912 GOOD             NGS
 JV4089
 JV4089                          STATION DESCRIPTION
 JV4089
 JV4089'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV4089'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV4089'TECHNOLOGY GROUNDS, 0.16 KM (0.10 MI) NORTH ALONG EAST DRIVE FROM THE
 JV4089'JUNCTION OF SOUTH DRIVE TO THE MARK ON THE RIGHT, 9.6 M (31.50 FT)
 JV4089'NORTHEAST OF A METAL LIGHT POLE, 36.9 M (121.06 FT) SOUTH OF THE
 JV4089'EXTENDED CENTERLINE OF A PAVED ROAD LEADING WEST TO BUILDINGS
 JV4089'NUMBERED 220 AND 222, 9.3 M (30.51 FT) EAST OF THE CENTERLINE OF EAST
 JV4089'DRIVE, 5.6 M (18.37 FT) EAST OF THE EAST CURB OF THE DRIVE, AND 21.6
 JV4089'M (70.87 FT) SOUTH-SOUTHEAST OF BENCH MARKD NBS 1 1980.  NOTE--ACCESS
 JV4089'TO DATUM POINT IS THROUGH A 4-INCH LOGO CAP.
 JV4089
 JV4089                          STATION RECOVERY (1991)
 JV4089
 JV4089'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV4089'RECOVERED IN GOOD CONDITION.
 JV4089
 JV4089                          STATION RECOVERY (1997)
 JV4089
 JV4089'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (RLA)
 JV4089'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8867 ***********************************************************************
 HV8867  FBN         -  This is a Federal Base Network Control Station.
 HV8867  DESIGNATION -  CLAVER
 HV8867  PID         -  HV8867
 HV8867  STATE/COUNTY-  MD/ST MARYS
 HV8867  COUNTRY     -  US
 HV8867  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV8867
 HV8867                         *CURRENT SURVEY CONTROL
 HV8867  ______________________________________________________________________
 HV8867* NAD 83(2011) POSITION- 38 07 52.57356(N) 076 22 57.18895(W)   ADJUSTED
 HV8867* NAD 83(2011) ELLIP HT-   -11.205 (meters)        (06/27/12)   ADJUSTED
 HV8867* NAD 83(2011) EPOCH   -  2010.00
 HV8867* NAVD 88 ORTHO HEIGHT -    23.821 (meters)       78.15  (feet) ADJUSTED
 HV8867  ______________________________________________________________________
 HV8867  GEOID HEIGHT    -        -35.007 (meters)                     GEOID18
 HV8867  NAD 83(2011) X  -  1,182,708.301 (meters)                     COMP
 HV8867  NAD 83(2011) Y  - -4,882,224.665 (meters)                     COMP
 HV8867  NAD 83(2011) Z  -  3,916,908.646 (meters)                     COMP
 HV8867  LAPLACE CORR    -         -5.88  (seconds)                    DEFLEC18
 HV8867  DYNAMIC HEIGHT  -         23.806 (meters)       78.10  (feet) COMP
 HV8867  MODELED GRAVITY -    979,980.2   (mgal)                       NAVD 88
 HV8867
 HV8867  VERT ORDER      -  SECOND    CLASS II
 HV8867
 HV8867  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8867  Standards:
 HV8867         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8867            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8867  -------------------------------------------------------------------
 HV8867  NETWORK    0.57   1.18           0.25   0.21   0.60      0.03475592
 HV8867  -------------------------------------------------------------------
 HV8867  Click here for local accuracies and other accuracy information.
 HV8867
 HV8867.The horizontal coordinates were established by GPS observations
 HV8867.and adjusted by the National Geodetic Survey in June 2012.
 HV8867
 HV8867.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8867.been affixed to the stable North American tectonic plate. See 
 HV8867.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8867
 HV8867.The horizontal coordinates are valid at the epoch date displayed above
 HV8867.which is a decimal equivalence of Year/Month/Day.
 HV8867
 HV8867.The orthometric height was determined by differential leveling and
 HV8867.adjusted by the NATIONAL GEODETIC SURVEY
 HV8867.in June 1991.
 HV8867
 HV8867.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8867.GEOID18 height accuracy estimate available here.
 HV8867
 HV8867.Click photographs - Photos may exist for this station.
 HV8867
 HV8867.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8867
 HV8867.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8867
 HV8867.The ellipsoidal height was determined by GPS observations
 HV8867.and is referenced to NAD 83.
 HV8867
 HV8867.The dynamic height is computed by dividing the NAVD 88
 HV8867.geopotential number by the normal gravity value computed on the
 HV8867.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8867.degrees latitude (g = 980.6199 gals.).
 HV8867
 HV8867.The modeled gravity was interpolated from observed gravity values.
 HV8867
 HV8867. The following values were computed from the NAD 83(2011) position.
 HV8867
 HV8867;                    North         East     Units Scale Factor Converg.
 HV8867;SPC MD       -    51,756.559   454,136.529   MT  1.00003364   +0 23 15.1
 HV8867;SPC MD       -   169,804.64  1,489,946.26   sFT  1.00003364   +0 23 15.1
 HV8867;SPC VA S     - 1,201,618.510 3,685,639.398   MT  1.00003419   +1 17 06.5
 HV8867;SPC VA S     - 3,942,310.06 12,091,968.59   sFT  1.00003419   +1 17 06.5
 HV8867;UTM  18      - 4,221,282.699   378,829.457   MT  0.99978083   -0 51 13.6
 HV8867
 HV8867!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8867!SPC MD       -   1.00000176  x   1.00003364  =   1.00003540
 HV8867!SPC VA S     -   1.00000176  x   1.00003419  =   1.00003595
 HV8867!UTM  18      -   1.00000176  x   0.99978083  =   0.99978259
 HV8867
 HV8867_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7882921282(NAD 83)
 HV8867
 HV8867                          SUPERSEDED SURVEY CONTROL
 HV8867
 HV8867  NAD 83(2007)-  38 07 52.57417(N)    076 22 57.18966(W) AD(2002.00) 0
 HV8867  ELLIP H (02/10/07)  -11.204  (m)                       GP(2002.00)    
 HV8867  ELLIP H (02/12/02)  -11.147  (m)                       GP(       ) 4 1
 HV8867  NAD 83(1991)-  38 07 52.57327(N)    076 22 57.18881(W) AD(       ) B
 HV8867  ELLIP H (10/23/91)  -11.133  (m)                       GP(       ) 4 1
 HV8867  NAVD 88              23.82   (m)           78.1    (f) LEVELING    3  
 HV8867  NGVD 29              24.08   (m)           79.0    (f) LEVELING    3  
 HV8867
 HV8867.Superseded values are not recommended for survey control.
 HV8867
 HV8867.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8867.See file dsdata.pdf to determine how the superseded data were derived.
 HV8867
 HV8867_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8867_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8867_STAMPING: CLAVER 1990
 HV8867_MARK LOGO: NGS
 HV8867_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8867_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8867+STABILITY: SURFACE MOTION
 HV8867_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8867+SATELLITE: SATELLITE OBSERVATIONS - February 19, 2009
 HV8867
 HV8867  HISTORY     - Date     Condition        Report By
 HV8867  HISTORY     - 1990     MONUMENTED       NGS
 HV8867  HISTORY     - 19901016 GOOD             NGS
 HV8867  HISTORY     - 19901207 GOOD             NGS
 HV8867  HISTORY     - 19910129 GOOD
 HV8867  HISTORY     - 19921117 GOOD             MCCRON
 HV8867  HISTORY     - 20000216 GOOD             NGS
 HV8867  HISTORY     - 20000824 GOOD             GEOMET
 HV8867  HISTORY     - 20020820 GOOD             INDIV
 HV8867  HISTORY     - 20090219 GOOD             INDIV
 HV8867
 HV8867                          STATION DESCRIPTION
 HV8867
 HV8867'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8867'THE STATION IS LOCATED ABOUT 1.76 KM (1.09 MI) NORTHWEST OF RIDGE,
 HV8867'11.68 KM (7.26 MI) NORTHWEST OF POINT LOOKOUT AND 7.84 KM (4.87 MI)
 HV8867'SOUTHEAST OF ST MARYS CITY ON THE GROUNDS OF THE FIRST DICTRICT
 HV8867'COMMUNITY PARK.  OWNERSHIP--ST MARYS COUNTY DEPARTMENT OF RECREATION
 HV8867'AND PARKS.
 HV8867'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 5 AND
 HV8867'STATE HIGHWAY 235, IN THE TOWN OF RIDGE, GO NORTHWEST ON STATE
 HV8867'HIGHWAY 5 FOR 1.6 KM (1.0 MI) TO ST PETER CLAVER ROAD.  MAKE A RIGHT
 HV8867'AND FOLLOW ST PETER CLAVER ROAD FOR 0.56 KM (0.35 MI) TO THE STATION
 HV8867'ON THE RIGHT AT THE FIRST DISTRCT COMMUNITY PARK.
 HV8867'THE STATION DISK IS SET IN THE TOP OF A 0.23 M (0.75 FT) ROUND
 HV8867'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT
 HV8867'IS 48.77 M (160.01 FT) SOUTH SOUTHEAST OF THE CENTERLINE OF SEA SIDE
 HV8867'VIEW ROAD, 38.22 M (125.39 FT) SOUTHWEST OF A POWERPOLE, 13.23 M
 HV8867'(43.41 FT) WEST OF THE CENTERLINE OF ST PETER CLAVER ROAD AND 56.24 M
 HV8867'(184.51 FT) NORTHWEST OF A POWERPOLE.
 HV8867
 HV8867                          STATION RECOVERY (1990)
 HV8867
 HV8867'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV8867'2.0 KM (1.2 MI) SOUTHEASTERLY ALONG STATE HIGHWAY 5 FROM THE POST
 HV8867'OFFICE IN ST. INIGOES, THENCE 0.6 KM (0.4 MI) SOUTHERLY ALONG ST.
 HV8867'PETER CLAVER ROAD, 56.3 M (184.7 FT) NORTHWEST OF A UTILITY POLE,
 HV8867'48.7 M (159.8 FT) SOUTH-SOUTHEAST OF THE CENTER OF SEA VIEW ROAD,
 HV8867'38.2 M (125.3 FT) SOUTHWEST OF A UTILITY POLE, 13.3 M (43.6 FT) WEST
 HV8867'OF THE ROAD CENTER, 0.6 M (2.0 FT) ABOVE THE LEVEL OF THE ROAD, AND
 HV8867'THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
 HV8867
 HV8867                          STATION RECOVERY (1990)
 HV8867
 HV8867'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV8867'STATION IS LOCATED ABOUT 2 KM (1.2 MI) NORTHWEST OF RIDGE, 12 KM
 HV8867'(7.5 MI) NORTHWEST OF POINT LOOKOUT, ON THE GROUNDS OF THE FIRST
 HV8867'DISTRICT COMMUNITY PARK, IN A LARGE GRASS AREA, ACROSS THE ROAD FROM
 HV8867'THE ST PETER CLAVER CHURCH.  OWNERSHIP--ST MARYS COUNTY DEPARTMENT OF
 HV8867'RECREATION AND PARKS.
 HV8867'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 5 AND 235 IN RIDGE,
 HV8867'GO NORTHWEST ON STATE HIGHWAY 5 FOR 1.51 KM (0.94 MI) TO A PAVED ROAD
 HV8867'LEFT.  TURN LEFT, WESTERLY, ON ST PETER CLAVER ROAD FOR 0.50 KM
 HV8867'(0.31 MI) TO THE PARK ENTRANCE ON THE LEFT.  CONTINUE AHEAD FOR 104 M
 HV8867'(341.2 FT) TO THE STATION ON THE LEFT.
 HV8867'STATION MARK IS SET IN THE TOP OF A 20-CM ROUND CONCRETE POST FLUSH
 HV8867'WITH THE GROUND.  IT IS 13.2 M (43.3 FT) WEST OF THE ROAD CENTER, 8.1
 HV8867'M (26.6 FT) WEST OF A FIBERGLASS WITNESS POST IN A POST LINE, 48.9 M
 HV8867'(160.4 FT) SOUTHEAST OF THE CENTER OF SEASIDE VIEW ROAD, 35.5 M
 HV8867'(116.5 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF BASE SUPPORTING A
 HV8867'FOUR-COLUMN BRICK STRUCTURE OVER A STATUE IN FRONT OF THE CHURCH,
 HV8867'11.4 M (37.4 FT) SOUTH OF THE EXTENDED SOUTH WALL OF THE MAIN BODY OF
 HV8867'THE CHURCH, AND 68.2 M (223.8 FT) NORTH OF THE NORTHWEST CORNER OF A
 HV8867'FENCE AROUND TEAM BENCH AT BASEBALL BACKSTOP.
 HV8867'DESCRIBED BY G.R.HEID.
 HV8867
 HV8867                          STATION RECOVERY (1991)
 HV8867
 HV8867'RECOVERED 1991
 HV8867'RECOVERED IN GOOD CONDITION.
 HV8867
 HV8867                          STATION RECOVERY (1992)
 HV8867
 HV8867'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1992
 HV8867'RECOVERED IN GOOD CONDITION.
 HV8867
 HV8867                          STATION RECOVERY (2000)
 HV8867
 HV8867'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 HV8867'RECOVERED BY NATIONAL GEODETIC SURVEY, RECOVERED AS PREVIOUSLY
 HV8867'DESCRIBED.
 HV8867
 HV8867                          STATION RECOVERY (2000)
 HV8867
 HV8867'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HV8867'RECOVERED IN GOOD CONDITION.
 HV8867
 HV8867                          STATION RECOVERY (2002)
 HV8867
 HV8867'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (GEN)
 HV8867'RECOVERED AS DESCRIBED
 HV8867
 HV8867                          STATION RECOVERY (2009)
 HV8867
 HV8867'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2009 (WRA)
 HV8867'DESCRIPTION IS ADEQUATE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5125 ***********************************************************************
 JV5125  DESIGNATION -  CLAY
 JV5125  PID         -  JV5125
 JV5125  STATE/COUNTY-  MD/KENT
 JV5125  COUNTRY     -  US
 JV5125  USGS QUAD   -  ROCK HALL (2016)
 JV5125
 JV5125                         *CURRENT SURVEY CONTROL
 JV5125  ______________________________________________________________________
 JV5125* NAD 83(1991) POSITION- 39 08 47.03389(N) 076 09 07.98191(W)   ADJUSTED
 JV5125* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5125  ______________________________________________________________________
 JV5125  GEOID HEIGHT    -        -33.434 (meters)                     GEOID18
 JV5125  LAPLACE CORR    -         -2.15  (seconds)                    DEFLEC18
 JV5125  HORZ ORDER      -  THIRD
 JV5125
 JV5125.The horizontal coordinates were established by classical geodetic methods
 JV5125.and adjusted by the National Geodetic Survey in January 1992.
 JV5125
 JV5125.The orthometric height was scaled from a topographic map.
 JV5125
 JV5125.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5125.GEOID18 height accuracy estimate available here.
 JV5125
 JV5125.Click photographs - Photos may exist for this station.
 JV5125
 JV5125.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5125
 JV5125. The following values were computed from the NAD 83(1991) position.
 JV5125
 JV5125;                    North         East     Units Scale Factor Converg.
 JV5125;SPC MD       -   164,598.471   473,284.881   MT  0.99996097   +0 31 55.6
 JV5125;SPC MD       -   540,020.15  1,552,768.81   sFT  0.99996097   +0 31 55.6
 JV5125;UTM  18      - 4,333,654.845   400,432.045   MT  0.99972207   -0 43 38.9
 JV5125
 JV5125!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5125!SPC MD       -   1.00000513  x   0.99996097  =   0.99996610
 JV5125!UTM  18      -   1.00000513  x   0.99972207  =   0.99972720
 JV5125
 JV5125:                Primary Azimuth Mark                     Grid Az
 JV5125:SPC MD       -  LOVELY                                   006 46 50.6
 JV5125:UTM  18      -  LOVELY                                   008 02 25.1
 JV5125
 JV5125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0043233654(NAD 83)
 JV5125
 JV5125|---------------------------------------------------------------------|
 JV5125| PID    Reference Object                     Distance      Geod. Az  |
 JV5125|                                                           dddmmss.s |
 JV5125| JV5121 LOVELY                              465.157 METERS 0071846.2 |
 JV5125| JV5126 GUT                                 452.430 METERS 0734503.8 |
 JV5125|---------------------------------------------------------------------|
 JV5125
 JV5125                          SUPERSEDED SURVEY CONTROL
 JV5125
 JV5125  NAD 83(1986)-  39 08 47.02825(N)    076 09 07.99324(W) AD(       ) 3
 JV5125  NAD 27      -  39 08 46.63600(N)    076 09 09.17200(W) AD(       ) 3
 JV5125  USSD        -  39 08 47.04400(N)    076 09 08.99100(W) AD(       ) 3
 JV5125
 JV5125.Superseded values are not recommended for survey control.
 JV5125
 JV5125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5125.See file dsdata.pdf to determine how the superseded data were derived.
 JV5125
 JV5125_MARKER: H = DRILL HOLE
 JV5125_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5125_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5125+STABILITY: SURFACE MOTION
 JV5125
 JV5125  HISTORY     - Date     Condition        Report By
 JV5125  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5125  HISTORY     - 1941     GOOD             CGS
 JV5125  HISTORY     - 1961     SEE DESCRIPTION  CGS
 JV5125  HISTORY     - 1973     MARK NOT FOUND   MDDNR
 JV5125
 JV5125                          STATION DESCRIPTION
 JV5125
 JV5125'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5125'STATION IS ON THE WESTERN SHORE OF EAST FORK OF LANGFORD CREEK,
 JV5125'ABOUT 1/8 MILE S OF LOVELY COVE, AND 5/8 MILE NW OF ENTRANCE TO
 JV5125'PHILIPS CREEK, IN WOODS, ABOUT 20 FEET ABOVE HIGH WATER, AND 6
 JV5125'YARDS SW OF EDGE OF BANK.
 JV5125'
 JV5125'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5125'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5125'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5125'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5125'MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE
 JV5125'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5125'
 JV5125'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5125'FOLLOWS--NAIL IN BLAZE IN 13-INCH CHESTNUT TREE, 8.15 METERS (26.74
 JV5125'FEET), S 48 DEG 03 MIN W.  NAIL IN BLAZE IN 9-INCH OAK TREE, 5.06
 JV5125'METERS (16.60 FEET), S 82 DEG 57 MIN W.  LEFT TANGENT TO CHIMNEY OF
 JV5125'BRICK HOUSE, 1/2 MILE, N 39 DEG 05 MIN E. NAIL IN BLAZE IN
 JV5125'12-INCH OAK TREE, 4.61 METERS (15.12 FEET), N 57 DEG 49 MIN E. NAIL
 JV5125'IN BLAZE IN 12-INCH OAK TREE, 4.13 METERS (13.55 FEET), S 63 DEG 05
 JV5125'MIN E.  W CHIMNEY OF LARGE BRICK HOUSE, 1-1/4 MILES, S 54 DEG 17
 JV5125'MIN E.  NAIL IN BLAZE IN 10-INCH CHESTNUT TREE, 6.23 METERS (20.44
 JV5125'FEET), S 30 DEG 50 MIN E. NAIL IN BLAZE IN 10-INCH CHESTNUT
 JV5125'TREE, 6.24 METERS (20.47 FEET), S 00 DEG 18 MIN E.
 JV5125
 JV5125                          STATION RECOVERY (1941)
 JV5125
 JV5125'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5125'STATION RECOVERED AS DESCRIBED.  REFERENCE TREES ARE
 JV5125'GONE.  ADDITIONAL DESCRIPTION SHOULD READ AS FOLLOWS--STATION IS 1
 JV5125'METER W OF TOP OF BANK AND 17.5 METERS NE OF NE CORNER OF A
 JV5125'BUNGALOW.
 JV5125
 JV5125                          STATION RECOVERY (1961)
 JV5125
 JV5125'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5125'STATION RECOVERED IN GOOD CONDITION.  STATION IS 18.6 METERS NE OF
 JV5125'THE NE CORNER OF HOUSE, 4.4 METERS WEST OF EDGE OF BANK AND 1.5
 JV5125'METERS E OF A HICKORY TREE.
 JV5125
 JV5125                          STATION RECOVERY (1973)
 JV5125
 JV5125'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 JV5125'MSFC-USCS NOT RECOVERED
 JV5125'
 JV5125'STA. NOT RECOVERED AFTER SHORT SEARCH.  PROP. OWNER RECALLS SEEING
 JV5125'MONUMENT WHEN HE MOVED INTO HOUSE 1961.  DOES NOT REMEMBER SEEING IT
 JV5125'SINCE.  SHORE HAS BEEN BULKHEADED AND BANK SLOPED TO
 JV5125'BULKHEAD.  POSSIBLE TOP OF MONUMENT HAS BEEN BROKEN OFF.  HICKORY
 JV5125'TREE MENTIONED COULD NOT BE FOUND.  STA. MAY BE RECOVERABLE WITH
 JV5125'MORE DETAILED SEARCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5278 ***********************************************************************
 JV5278  DESIGNATION -  CLAY
 JV5278  PID         -  JV5278
 JV5278  STATE/COUNTY-  MD/BALTIMORE
 JV5278  COUNTRY     -  US
 JV5278  USGS QUAD   -  SPARROWS POINT (2016)
 JV5278
 JV5278                         *CURRENT SURVEY CONTROL
 JV5278  ______________________________________________________________________
 JV5278* NAD 83(1991) POSITION- 39 14 51.08454(N) 076 24 55.41079(W)   ADJUSTED
 JV5278* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5278  ______________________________________________________________________
 JV5278  GEOID HEIGHT    -        -33.036 (meters)                     GEOID18
 JV5278  LAPLACE CORR    -         -1.49  (seconds)                    DEFLEC18
 JV5278  HORZ ORDER      -  SECOND
 JV5278
 JV5278.The horizontal coordinates were established by classical geodetic methods
 JV5278.and adjusted by the National Geodetic Survey in January 1992.
 JV5278
 JV5278.The orthometric height was scaled from a topographic map.
 JV5278
 JV5278.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5278.GEOID18 height accuracy estimate available here.
 JV5278
 JV5278.Click photographs - Photos may exist for this station.
 JV5278
 JV5278.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5278
 JV5278. The following values were computed from the NAD 83(1991) position.
 JV5278
 JV5278;                    North         East     Units Scale Factor Converg.
 JV5278;SPC MD       -   175,646.216   450,463.762   MT  0.99997085   +0 22 00.9
 JV5278;SPC MD       -   576,265.96  1,477,896.53   sFT  0.99997085   +0 22 00.9
 JV5278;UTM  18      - 4,345,199.654   377,864.399   MT  0.99978367   -0 53 44.1
 JV5278
 JV5278!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5278!SPC MD       -   1.00000523  x   0.99997085  =   0.99997608
 JV5278!UTM  18      -   1.00000523  x   0.99978367  =   0.99978889
 JV5278
 JV5278:                Primary Azimuth Mark                     Grid Az
 JV5278:SPC MD       -  HART                                     094 25 10.0
 JV5278:UTM  18      -  HART                                     095 40 55.0
 JV5278
 JV5278_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7786445199(NAD 83)
 JV5278
 JV5278|---------------------------------------------------------------------|
 JV5278| PID    Reference Object                     Distance      Geod. Az  |
 JV5278|                                                           dddmmss.s |
 JV5278| CB1088 CLAY RM 1                            17.219 METERS 01049     |
 JV5278| JV5251 HART                                APPROX. 2.8 KM 0944710.9 |
 JV5278| JV5252 CRAIGHILL CHAN REAR RNG LT          APPROX. 2.7 KM 1383428.5 |
 JV5278|---------------------------------------------------------------------|
 JV5278
 JV5278                          SUPERSEDED SURVEY CONTROL
 JV5278
 JV5278  NAD 83(1986)-  39 14 51.07970(N)    076 24 55.41959(W) AD(       ) 2
 JV5278  NAD 27      -  39 14 50.69300(N)    076 24 56.57800(W) AD(       ) 2
 JV5278
 JV5278.Superseded values are not recommended for survey control.
 JV5278
 JV5278.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5278.See file dsdata.pdf to determine how the superseded data were derived.
 JV5278
 JV5278_MARKER: DS = TRIANGULATION STATION DISK
 JV5278_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5278_STAMPING: CLAY 1934
 JV5278_MARK LOGO: CGS
 JV5278_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5278+STABILITY: SURFACE MOTION
 JV5278
 JV5278  HISTORY     - Date     Condition        Report By
 JV5278  HISTORY     - 1934     MONUMENTED       CGS
 JV5278  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5278  HISTORY     - 1969     MARK NOT FOUND   MDSRC
 JV5278  HISTORY     - 19940630 MARK NOT FOUND   USPSQD
 JV5278
 JV5278                          STATION DESCRIPTION
 JV5278
 JV5278'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5278'ON NORTHERN SHORE OF BACK RIVER, ON CLAYBANK POINT, IN
 JV5278'GRASS-COVERED MARSH 125 FEET NW OF POINT AND ABOUT CENTER OF GRASS.
 JV5278'
 JV5278'STATION AND REFERENCE MARK ARE STANDARD BRONZE DISKS SET IN
 JV5278'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5278'
 JV5278'REFERENCE MARK IS 56 FEET N OF STATION AND ABOUT 17 FEET W OF
 JV5278'HIGH-WATER LINE.
 JV5278
 JV5278                          STATION RECOVERY (1961)
 JV5278
 JV5278'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5278'STATION COULD NOT BE FOUND.  MR. MILLER, WHO OWNS THE PROPERTY,
 JV5278'STATED THAT HE FISHED THE MONUMENTS OUT OF THE WATER 2 YEARS AGO.
 JV5278'THIS STATION SHOULD BE CLASSIFIED DESTROYED.
 JV5278
 JV5278                          STATION RECOVERY (1969)
 JV5278
 JV5278'RECOVERY NOTE BY MD STATE ROADS COMM 1969
 JV5278'CLAY 1934 R.M. NO.1 - MARKER FOUND LYING OUT OF GROUND.  DISK
 JV5278'REMOVED AND SENT TO C AND GS NORFOLK REGIONAL OFFICE.
 JV5278
 JV5278                          STATION RECOVERY (1994)
 JV5278
 JV5278'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5278'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3932 ***********************************************************************
 JU3932  DESIGNATION -  CLAY
 JU3932  PID         -  JU3932
 JU3932  STATE/COUNTY-  MD/CECIL
 JU3932  COUNTRY     -  US
 JU3932  USGS QUAD   -  NORTH EAST (2016)
 JU3932
 JU3932                         *CURRENT SURVEY CONTROL
 JU3932  ______________________________________________________________________
 JU3932* NAD 83(1991) POSITION- 39 31 44.65676(N) 075 58 49.63823(W)   ADJUSTED
 JU3932* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 JU3932  ______________________________________________________________________
 JU3932  GEOID HEIGHT    -        -33.265 (meters)                     GEOID18
 JU3932  LAPLACE CORR    -         -0.12  (seconds)                    DEFLEC18
 JU3932  HORZ ORDER      -  SECOND
 JU3932
 JU3932.The horizontal coordinates were established by classical geodetic methods
 JU3932.and adjusted by the National Geodetic Survey in January 1992.
 JU3932
 JU3932.The orthometric height was scaled from a topographic map.
 JU3932
 JU3932.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3932.GEOID18 height accuracy estimate available here.
 JU3932
 JU3932.Click photographs - Photos may exist for this station.
 JU3932
 JU3932.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3932
 JU3932. The following values were computed from the NAD 83(1991) position.
 JU3932
 JU3932;                    North         East     Units Scale Factor Converg.
 JU3932;SPC MD       -   207,232.103   487,657.476   MT  1.00001479   +0 38 23.6
 JU3932;SPC MD       -   679,893.99  1,599,922.90   sFT  1.00001479   +0 38 23.6
 JU3932;UTM  18      - 4,375,949.771   415,735.779   MT  0.99968742   -0 37 26.6
 JU3932
 JU3932!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3932!SPC MD       -   1.00000337  x   1.00001479  =   1.00001816
 JU3932!UTM  18      -   1.00000337  x   0.99968742  =   0.99969079
 JU3932
 JU3932:                Primary Azimuth Mark                     Grid Az
 JU3932:SPC MD       -  CHARLESTOWN CHIMNEY                      006 54 32.5
 JU3932:UTM  18      -  CHARLESTOWN CHIMNEY                      008 10 22.7
 JU3932
 JU3932_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1573575949(NAD 83)
 JU3932
 JU3932|---------------------------------------------------------------------|
 JU3932| PID    Reference Object                     Distance      Geod. Az  |
 JU3932|                                                           dddmmss.s |
 JU3932| JU3920 CHARLESTOWN CHIMNEY                 APPROX. 5.1 KM 0073256.1 |
 JU3932| CB1362 CLAY RM 2                             2.672 METERS 09608     |
 JU3932| CB1361 CLAY RM 1                             2.615 METERS 17043     |
 JU3932|---------------------------------------------------------------------|
 JU3932
 JU3932                          SUPERSEDED SURVEY CONTROL
 JU3932
 JU3932  NAD 83(1986)-  39 31 44.65057(N)    075 58 49.64367(W) AD(       ) 2
 JU3932  NAD 27      -  39 31 44.24090(N)    075 58 50.83290(W) AD(       ) 2
 JU3932
 JU3932.Superseded values are not recommended for survey control.
 JU3932
 JU3932.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3932.See file dsdata.pdf to determine how the superseded data were derived.
 JU3932
 JU3932_MARKER: DS = TRIANGULATION STATION DISK
 JU3932_SETTING: 80 = SET IN A BOULDER
 JU3932_STAMPING: CLAY 1937
 JU3932_MARK LOGO: CGS
 JU3932_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3932+STABILITY: SURFACE MOTION
 JU3932
 JU3932  HISTORY     - Date     Condition        Report By
 JU3932  HISTORY     - 1937     MONUMENTED       CGS
 JU3932  HISTORY     - 1957     SEE DESCRIPTION  CGS
 JU3932  HISTORY     - 1971     SEE DESCRIPTION  NGS
 JU3932
 JU3932                          STATION DESCRIPTION
 JU3932
 JU3932'DESCRIBED BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU3932'LOCATED ON E SIDE OF NORTHEAST RIVER ON RED POINT.  IT IS ABOUT
 JU3932'100 METERS N OF A PROMINENT RED CLAY BLUFF BANK ON EXTREME N TIP
 JU3932'OF RED POINT AT A SCATTERED GROUP OF BOULDERS AND ROCKS ON THE
 JU3932'SHORE LINE.
 JU3932'
 JU3932'THE STATION IS MARKED, AS DESCRIBED IN NOTE 4, BY A STANDARD
 JU3932'DISK, STAMPED CLAY - 1937, SET IN A DRILL HOLE IN THE TOP OF THE
 JU3932'LARGEST ROCK ON THE POINT (SANDSTONE ROCK WITH FLAT TOP) AND IS
 JU3932'ABOUT 3 FEET ABOVE HIGH WATER.
 JU3932'
 JU3932'THE REFERENCE MARKS ARE MARKED, AS DESCRIBED IN NOTE 12C, BY
 JU3932'STANDARD DISKS, STAMPED NO.1 AND NO.2, SET IN A DRILL HOLE IN
 JU3932'THE TOP OF THE TWO NEXT LARGEST ROCKS ON THE POINT.  DISTANCES
 JU3932'TO THE REFERENCE MARKS ARE HORIZONTAL DISTANCES.
 JU3932
 JU3932                          STATION RECOVERY (1957)
 JU3932
 JU3932'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (WGL)
 JU3932'LETTER OF MR. WELDON G. LEE, MANHEIM R.D. NO. 1, PENN., DATED
 JU3932'29 MAY 1957--
 JU3932'
 JU3932'THIS IS TO INFORM YOU OF A CHANGE OF POSITION OF SURVEY MARKER
 JU3932'NO. 2 OF THE TRIANGULATION STATION AT RED POINT,
 JU3932'MARYLAND.  DURING THE WINTER THE ROCK, ON WHICH THE MARKER WAS
 JU3932'IMBEDDED, SPLIT AND FELL OFF TO A DIFFERENT POSITION.
 JU3932'
 JU3932'OFFICE NOTE--ALTHOUGH THE LETTER DOES NOT MENTION THE NAME OF
 JU3932'THE STATION IT IS BELIEVED TO BE STATION CLAY.
 JU3932
 JU3932                          STATION RECOVERY (1971)
 JU3932
 JU3932'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (JDS)
 JU3932'THE STATION WAS RECOVERED AS DESCRIBED.  THE DISKS FOR THE
 JU3932'STATION MARK AND R.M. 1 HAVE BEEN REMOVED, AND THE STATION AND
 JU3932'THE R.M. ARE NOW ONLY IDENTIFIED BY THE DRILL HOLES IN WHICH THEY
 JU3932'WERE SET.  R.M. 2 WAS REPORTED MISSING IN 1957 AND WAS NOT FOUND.
 JU3932'
 JU3932'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3932'2.3 MILES S OF CHARLESTOWN, MD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1899 ***********************************************************************
 HU1899  DESIGNATION -  CLAY 1901
 HU1899  PID         -  HU1899
 HU1899  STATE/COUNTY-  MD/DORCHESTER
 HU1899  COUNTRY     -  US
 HU1899  USGS QUAD   -  DEAL ISLAND (2016)
 HU1899
 HU1899                         *CURRENT SURVEY CONTROL
 HU1899  ______________________________________________________________________
 HU1899* NAD 83(1993) POSITION- 38 13 57.79319(N) 075 58 25.00369(W)   ADJUSTED
 HU1899* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1899  ______________________________________________________________________
 HU1899  GEOID HEIGHT    -        -35.653 (meters)                     GEOID18
 HU1899  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 HU1899  HORZ ORDER      -  THIRD
 HU1899
 HU1899.The horizontal coordinates were established by classical geodetic methods
 HU1899.and adjusted by the National Geodetic Survey in November 1994.
 HU1899
 HU1899.The orthometric height was scaled from a topographic map.
 HU1899
 HU1899.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1899.GEOID18 height accuracy estimate available here.
 HU1899
 HU1899.Click photographs - Photos may exist for this station.
 HU1899
 HU1899.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1899
 HU1899. The following values were computed from the NAD 83(1993) position.
 HU1899
 HU1899;                    North         East     Units Scale Factor Converg.
 HU1899;SPC MD       -    63,339.853   489,863.758   MT  1.00001239   +0 38 39.1
 HU1899;SPC MD       -   207,807.50  1,607,161.35   sFT  1.00001239   +0 38 39.1
 HU1899;UTM  18      - 4,232,084.402   414,789.324   MT  0.99968942   -0 36 09.2
 HU1899
 HU1899!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1899!SPC MD       -   1.00000563  x   1.00001239  =   1.00001802
 HU1899!UTM  18      -   1.00000563  x   0.99968942  =   0.99969505
 HU1899
 HU1899:                Primary Azimuth Mark                     Grid Az
 HU1899:SPC MD       -  HALL                                     148 52 15.5
 HU1899:UTM  18      -  HALL                                     150 07 03.8
 HU1899
 HU1899_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1478932084(NAD 83)
 HU1899
 HU1899|---------------------------------------------------------------------|
 HU1899| PID    Reference Object                     Distance      Geod. Az  |
 HU1899|                                                           dddmmss.s |
 HU1899| HU1947 NANTICOKE CHURCH SPIRE              APPROX. 7.2 KM 0544529.7 |
 HU1899| HU1865 MOUNT VERNON CHURCH SPIRE           APPROX.12.5 KM 0840756.3 |
 HU1899| HU1901 HALL                                APPROX. 5.6 KM 1493054.6 |
 HU1899| HV6463 PEARL                               APPROX. 7.4 KM 2151044.3 |
 HU1899| HV6449 BISHOP 2 1898                       APPROX. 6.7 KM 2613605.2 |
 HU1899| HV6409 FISH                                APPROX. 9.3 KM 3360250.0 |
 HU1899|---------------------------------------------------------------------|
 HU1899
 HU1899                          SUPERSEDED SURVEY CONTROL
 HU1899
 HU1899  NAD 83(1991)-  38 13 57.79339(N)    075 58 25.00323(W) AD(       ) 3
 HU1899  NAD 83(1986)-  38 13 57.79303(N)    075 58 25.02281(W) AD(       ) 3
 HU1899  NAD 27      -  38 13 57.34200(N)    075 58 26.25300(W) AD(       ) 3
 HU1899  USSD        -  38 13 57.72700(N)    075 58 25.99900(W) AD(       ) 3
 HU1899
 HU1899.Superseded values are not recommended for survey control.
 HU1899
 HU1899.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1899.See file dsdata.pdf to determine how the superseded data were derived.
 HU1899
 HU1899_MARKER: N = NAIL
 HU1899_SETTING: 0 = UNSPECIFIED SETTING
 HU1899_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1899
 HU1899  HISTORY     - Date     Condition        Report By
 HU1899  HISTORY     - 1901     MONUMENTED       CGS
 HU1899  HISTORY     - 1932     MARK NOT FOUND   CGS
 HU1899
 HU1899                          STATION DESCRIPTION
 HU1899
 HU1899'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (WIV)
 HU1899'STATION IS ON THE SOUTHWESTERN POINT OF CLAY ISLAND, BETWEEN
 HU1899'FISHING BAY AND TANGIER SOUND.  A MULBERRY TREE STANDS 5 METERS
 HU1899'N BY W OF THE STATION.  IT IS MARKED BY NAIL IN PINE STUB INSIDE
 HU1899'4-INCH TILE PIPE, SET IN CEMENT, FLANGE END DOWN.
 HU1899
 HU1899                          STATION RECOVERY (1932)
 HU1899
 HU1899'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1899'NO TRACE OF THIS STATION NOR OF THE WITNESS MARK WAS FOUND AFTER A
 HU1899'THOROUGH SEARCH BY A PARTY OF FOUR MEN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4745 ***********************************************************************
 JV4745  DESIGNATION -  CLEAR SPRING
 JV4745  PID         -  JV4745
 JV4745  STATE/COUNTY-  MD/WASHINGTON
 JV4745  COUNTRY     -  US
 JV4745  USGS QUAD   -  CLEAR SPRING (2016)
 JV4745
 JV4745                         *CURRENT SURVEY CONTROL
 JV4745  ______________________________________________________________________
 JV4745* NAD 83(1991) POSITION- 39 39 11.58606(N) 077 55 56.79229(W)   ADJUSTED
 JV4745* NAVD 88 ORTHO HEIGHT -   177.    (meters)      581.    (feet) SCALED
 JV4745  ______________________________________________________________________
 JV4745  GEOID HEIGHT    -        -34.287 (meters)                     GEOID18
 JV4745  LAPLACE CORR    -         -1.59  (seconds)                    DEFLEC18
 JV4745  HORZ ORDER      -  SECOND
 JV4745
 JV4745.The horizontal coordinates were established by classical geodetic methods
 JV4745.and adjusted by the National Geodetic Survey in January 1992.
 JV4745
 JV4745.The orthometric height was scaled from a topographic map.
 JV4745
 JV4745.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4745.GEOID18 height accuracy estimate available here.
 JV4745
 JV4745.Click photographs - Photos may exist for this station.
 JV4745
 JV4745.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4745
 JV4745. The following values were computed from the NAD 83(1991) position.
 JV4745
 JV4745;                    North         East     Units Scale Factor Converg.
 JV4745;SPC MD       -   220,935.349   319,971.871   MT  1.00004187   -0 35 06.8
 JV4745;SPC MD       -   724,852.06  1,049,774.38   sFT  1.00004187   -0 35 06.8
 JV4745;SPC PA S     -    35,534.903   584,341.165   MT  1.00005560   -0 07 06.1
 JV4745;SPC PA S     -   116,584.09  1,917,125.97   sFT  1.00005560   -0 07 06.1
 JV4745;SPC WV N     -   129,200.817   734,519.695   MT  0.99994085   +0 59 59.1
 JV4745;SPC WV N     -   423,886.35  2,409,836.70   sFT  0.99994085   +0 59 59.1
 JV4745;UTM  18      - 4,393,379.577   248,405.377   MT  1.00037940   -1 52 20.2
 JV4745;UTM  17      - 4,393,767.340   763,189.141   MT  1.00045290   +1 57 31.1
 JV4745
 JV4745!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4745!SPC MD       -   0.99997764  x   1.00004187  =   1.00001951
 JV4745!SPC PA S     -   0.99997764  x   1.00005560  =   1.00003324
 JV4745!SPC WV N     -   0.99997764  x   0.99994085  =   0.99991849
 JV4745!UTM  18      -   0.99997764  x   1.00037940  =   1.00035703
 JV4745!UTM  17      -   0.99997764  x   1.00045290  =   1.00043053
 JV4745
 JV4745:                Primary Azimuth Mark                     Grid Az
 JV4745:SPC MD       -  CLEAR SPRING AZ MK                       305 52 57.0
 JV4745:SPC PA S     -  CLEAR SPRING AZ MK                       305 24 56.3
 JV4745:SPC WV N     -  CLEAR SPRING AZ MK                       304 17 51.1
 JV4745:UTM  18      -  CLEAR SPRING AZ MK                       307 10 10.4
 JV4745:UTM  17      -  CLEAR SPRING AZ MK                       303 20 19.1
 JV4745
 JV4745_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ4840593379(NAD 83)
 JV4745
 JV4745|---------------------------------------------------------------------|
 JV4745| PID    Reference Object                     Distance      Geod. Az  |
 JV4745|                                                           dddmmss.s |
 JV4745| CK6826 CLEAR SPRING RM 1                    21.864 METERS 00624     |
 JV4745| JV4755 CLEAR SPRING ST PETERS E L CH       174.466 METERS 03400     |
 JV4745| JV4756 CLEAR SPRING ST JOHNS REF CH        APPROX. 0.5 KM 0461908.9 |
 JV4745| CK6827 CLEAR SPRING RM 2                    23.305 METERS 25519     |
 JV4745| CK6825 CLEAR SPRING AZ MK                                 3051750.2 |
 JV4745|---------------------------------------------------------------------|
 JV4745
 JV4745                          SUPERSEDED SURVEY CONTROL
 JV4745
 JV4745  NAD 83(1986)-  39 39 11.58544(N)    077 55 56.80057(W) AD(       ) 2
 JV4745  NAD 27      -  39 39 11.24100(N)    077 55 57.80900(W) AD(       ) 2
 JV4745
 JV4745.Superseded values are not recommended for survey control.
 JV4745
 JV4745.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4745.See file dsdata.pdf to determine how the superseded data were derived.
 JV4745
 JV4745_MARKER: DS = TRIANGULATION STATION DISK
 JV4745_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4745_STAMPING: CLEAR SPRING 1955
 JV4745_MARK LOGO: CGS
 JV4745_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4745+STABILITY: SURFACE MOTION
 JV4745
 JV4745  HISTORY     - Date     Condition        Report By
 JV4745  HISTORY     - 1955     MONUMENTED       CGS
 JV4745  HISTORY     - 1967     GOOD             CGS
 JV4745  HISTORY     - 20060429 MARK NOT FOUND   GEOCAC
 JV4745
 JV4745                          STATION DESCRIPTION
 JV4745
 JV4745'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (RFD)
 JV4745'THE STATION IS LOCATED NEAR THE HIGH SCHOOL IN THE SMALL TOWN
 JV4745'OF CLEAR SPRING.  IT IS 85.5 FEET SOUTH-SOUTHWEST OF THE SOUTHWEST
 JV4745'CORNER OF THE SCHOOL BUILDING, AND 22.5 FEET WEST-SOUTHWEST OF THE
 JV4745'SOUTHWEST CORNER OF A CONCRETE BLOCK INCINERATOR.
 JV4745'
 JV4745'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH FOR 0.2
 JV4745'MILE TO U.S. HIGHWAY 40, TURN LEFT (WEST) AND GO FOR 0.3 MILE
 JV4745'TO THE MARK ON THE RIGHT.
 JV4745'
 JV4745'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JV4745'STAMPED CLEAR SPRING 1955.
 JV4745'
 JV4745'REFERENCE MARK 1 IS 27 FEET WEST OF THE SOUTHWEST CORNER OF THE
 JV4745'SCHOOL BUILDING, AND 1 FOOT SOUTH OF THE BASKET BALL GOAL
 JV4745'POST.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 JV4745'CLEAR SPRING NO 1 1955.
 JV4745'
 JV4745'REFERENCE MARK 2 IS FLUSH WITH THE GROUND, AND THE DISK IS
 JV4745'STAMPED CLEAR SPRING NO 2 1955.
 JV4745'
 JV4745'THE AZIMUTH MARK IS 19 FEET WEST OF THE CENTER OF U.S. HIGHWAY
 JV4745'40, 2 FEET WEST OF A 4 IN X 4 IN WHITE WITNESS POST, AND 1 FOOT
 JV4745'SOUTH OF A WIRE FENCE.  THE MARK PROJECTS 2 INCHES, AND THE
 JV4745'DISK IS STAMPED CLEAR SPRING 1955.
 JV4745'
 JV4745'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV4745
 JV4745                          STATION RECOVERY (1967)
 JV4745
 JV4745'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JCB)
 JV4745'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO BE
 JV4745'IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION IS ADEQUATE WITH THE
 JV4745'FOLLOWING CHANGES.  AN ADDITION HAS BEEN ADDED TO THE SCHOOL AND
 JV4745'THE CONCRETE BLOCK INCINERATOR HAS BEEN REMOVED.  STATION IS 7
 JV4745'FEET EAST OF THE EDGE OF CULTIVATED FIELD AND THE MARK IS ABOUT 3
 JV4745'INCHES BELOW THE SURFACE.  REFERENCE MARK NO. 2 IS 0.5 FOOT EAST
 JV4745'OF THE EDGE OF CULTIVATED FIELD AND ABOUT 4 INCHES BELOW THE
 JV4745'SURFACE.  THE BASKETBALL GOAL POST BY REFERENCE MARK NO. 1 HAS
 JV4745'BEEN REMOVED AND THE MARK NOW PROJECTS ABOUT 3 INCHES.
 JV4745'
 JV4745'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4745'AT CLEAR SPRING.
 JV4745
 JV4745                          STATION RECOVERY (2006)
 JV4745
 JV4745'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 JV4745'SCHOOL BUILDING HAS BEEN TORN DOWN AND AREA REGRADED. WAS ABLE TO
 JV4745'LOCATE MONUMENT AND DISK STEM NORTHEAST OF STATION COORDINATES WHICH
 JV4745'MAY HAVE BEEN ONE OF THE REFERENCE MARKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4756 ***********************************************************************
 JV4756  DESIGNATION -  CLEAR SPRING ST JOHNS REF CH
 JV4756  PID         -  JV4756
 JV4756  STATE/COUNTY-  MD/WASHINGTON
 JV4756  COUNTRY     -  US
 JV4756  USGS QUAD   -  CLEAR SPRING (2016)
 JV4756
 JV4756                         *CURRENT SURVEY CONTROL
 JV4756  ______________________________________________________________________
 JV4756* NAD 83(1991) POSITION- 39 39 23.48221(N) 077 55 40.67597(W)   ADJUSTED
 JV4756  ______________________________________________________________________
 JV4756  GEOID HEIGHT    -        -34.289 (meters)                     GEOID18
 JV4756  LAPLACE CORR    -         -1.52  (seconds)                    DEFLEC18
 JV4756  HORZ ORDER      -  THIRD
 JV4756
 JV4756.The horizontal coordinates were established by classical geodetic methods
 JV4756.and adjusted by the National Geodetic Survey in January 1992.
 JV4756
 JV4756.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4756.GEOID18 height accuracy estimate available here.
 JV4756
 JV4756.Click photographs - Photos may exist for this station.
 JV4756
 JV4756.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4756
 JV4756. The following values were computed from the NAD 83(1991) position.
 JV4756
 JV4756;                    North         East     Units Scale Factor Converg.
 JV4756;SPC MD       -   221,298.321   320,359.811   MT  1.00004266   -0 34 56.7
 JV4756;SPC MD       -   726,042.91  1,051,047.15   sFT  1.00004266   -0 34 56.7
 JV4756;SPC PA S     -    35,901.029   584,726.139   MT  1.00005481   -0 06 55.7
 JV4756;SPC PA S     -   117,785.29  1,918,389.01   sFT  1.00005481   -0 06 55.7
 JV4756;SPC WV N     -   129,574.342   734,897.408   MT  0.99994088   +1 00 09.4
 JV4756;SPC WV N     -   425,111.82  2,411,075.91   sFT  0.99994088   +1 00 09.4
 JV4756;UTM  18      - 4,393,733.862   248,801.505   MT  1.00037694   -1 52 10.4
 JV4756;UTM  17      - 4,394,147.330   763,560.741   MT  1.00045531   +1 57 41.9
 JV4756
 JV4756_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ4880193733(NAD 83)
 JV4756
 JV4756                          SUPERSEDED SURVEY CONTROL
 JV4756
 JV4756  NAD 83(1986)-  39 39 23.48154(N)    077 55 40.68420(W) AD(       ) 3
 JV4756  NAD 27      -  39 39 23.13700(N)    077 55 41.69300(W) AD(       ) 3
 JV4756
 JV4756.Superseded values are not recommended for survey control.
 JV4756
 JV4756.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4756.See file dsdata.pdf to determine how the superseded data were derived.
 JV4756
 JV4756_MARKER: 90 = CHURCH SPIRE
 JV4756_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4756+SATELLITE: SATELLITE OBSERVATIONS - July 14, 2007
 JV4756
 JV4756  HISTORY     - Date     Condition        Report By
 JV4756  HISTORY     - 1955     FIRST OBSERVED   CGS
 JV4756  HISTORY     - 20070714 GOOD             GEOCAC
 JV4756  HISTORY     - 20150330 GOOD             ARCSHE
 JV4756
 JV4756                          STATION DESCRIPTION
 JV4756
 JV4756'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4756'THE STATION IS IN THE EAST EDGE OF CLEAR SPRING.  IT IS A RED
 JV4756'BRICK BUILDING WITH A SPIRE AT THE NORTH END.  THERE IS A CROSS
 JV4756'AT THE TOP OF THE SPIRE WHICH IS ABOUT 75 FEET HIGH.  THE POINT
 JV4756'INTERSECTED WAS THE TOP OF THE CROSS.
 JV4756
 JV4756                          STATION RECOVERY (2007)
 JV4756
 JV4756'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV4756'RECOVERED IN GOOD CONDITION.
 JV4756
 JV4756                          STATION RECOVERY (2015)
 JV4756
 JV4756'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 JV4756'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4755 ***********************************************************************
 JV4755  DESIGNATION -  CLEAR SPRING ST PETERS E L CH
 JV4755  PID         -  JV4755
 JV4755  STATE/COUNTY-  MD/WASHINGTON
 JV4755  COUNTRY     -  US
 JV4755  USGS QUAD   -  CLEAR SPRING (2016)
 JV4755
 JV4755                         *CURRENT SURVEY CONTROL
 JV4755  ______________________________________________________________________
 JV4755* NAD 83(1991) POSITION- 39 39 16.27576(N) 077 55 52.69976(W)   ADJUSTED
 JV4755  ______________________________________________________________________
 JV4755  GEOID HEIGHT    -        -34.287 (meters)                     GEOID18
 JV4755  LAPLACE CORR    -         -1.57  (seconds)                    DEFLEC18
 JV4755  HORZ ORDER      -  THIRD
 JV4755
 JV4755.The horizontal coordinates were established by classical geodetic methods
 JV4755.and adjusted by the National Geodetic Survey in January 1992.
 JV4755
 JV4755.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4755.GEOID18 height accuracy estimate available here.
 JV4755
 JV4755.Click photographs - Photos may exist for this station.
 JV4755
 JV4755.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4755
 JV4755. The following values were computed from the NAD 83(1991) position.
 JV4755
 JV4755;                    North         East     Units Scale Factor Converg.
 JV4755;SPC MD       -   221,078.987   320,070.911   MT  1.00004218   -0 35 04.3
 JV4755;SPC MD       -   725,323.31  1,050,099.31   sFT  1.00004218   -0 35 04.3
 JV4755;SPC PA S     -    35,679.345   584,439.033   MT  1.00005529   -0 07 03.5
 JV4755;SPC PA S     -   117,057.98  1,917,447.06   sFT  1.00005529   -0 07 03.5
 JV4755;SPC WV N     -   129,347.125   734,614.715   MT  0.99994087   +1 00 01.7
 JV4755;SPC WV N     -   424,366.36  2,410,148.44   sFT  0.99994087   +1 00 01.7
 JV4755;UTM  18      - 4,393,521.002   248,507.653   MT  1.00037876   -1 52 17.8
 JV4755;UTM  17      - 4,393,915.294   763,281.747   MT  1.00045350   +1 57 34.0
 JV4755
 JV4755_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ4850793521(NAD 83)
 JV4755
 JV4755                          SUPERSEDED SURVEY CONTROL
 JV4755
 JV4755  NAD 83(1986)-  39 39 16.27510(N)    077 55 52.70799(W) AD(       ) 3
 JV4755  NAD 27      -  39 39 15.93200(N)    077 55 53.71600(W) AD(       ) 3
 JV4755
 JV4755.Superseded values are not recommended for survey control.
 JV4755
 JV4755.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4755.See file dsdata.pdf to determine how the superseded data were derived.
 JV4755
 JV4755_MARKER: 90 = CHURCH SPIRE
 JV4755_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4755+SATELLITE: SATELLITE OBSERVATIONS - July 14, 2007
 JV4755
 JV4755  HISTORY     - Date     Condition        Report By
 JV4755  HISTORY     - 1955     FIRST OBSERVED   CGS
 JV4755  HISTORY     - 20070714 GOOD             GEOCAC
 JV4755
 JV4755                          STATION DESCRIPTION
 JV4755
 JV4755'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4755'THE STATION IS LOCATED NEAR THE SOUTHWEST EDGE OF CLEAR
 JV4755'SPRING.  THE BUILDING IS CONSTRUCTED OF RED BRICK AND HAS A SPIRE
 JV4755'AT THE WEST END THAT IS ABOUT 85 FEET HIGH.  THE POINT INTERSECTED
 JV4755'WAS THE TOP OF A SLENDER ROD LOCATED AT THE APEX OF THE SPIRE.
 JV4755
 JV4755                          STATION RECOVERY (2007)
 JV4755
 JV4755'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV4755'THE CHURCH AND SPIRE ARE IN GOOD CONDITION, BUT I WAS UNCERTAIN ABOUT
 JV4755'THE SLENDER METAL ROD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4804 ***********************************************************************
 AB4804  DESIGNATION -  CLEARVIEW
 AB4804  PID         -  AB4804
 AB4804  STATE/COUNTY-  MD/CARROLL
 AB4804  COUNTRY     -  US
 AB4804  USGS QUAD   -  UNION BRIDGE (2016)
 AB4804
 AB4804                         *CURRENT SURVEY CONTROL
 AB4804  ______________________________________________________________________
 AB4804* NAD 83(2011) POSITION- 39 36 40.02928(N) 077 07 57.13409(W)   ADJUSTED
 AB4804* NAD 83(2011) ELLIP HT-   131.541 (meters)        (06/27/12)   ADJUSTED
 AB4804* NAD 83(2011) EPOCH   -  2010.00
 AB4804* NAVD 88 ORTHO HEIGHT -   164.2   (meters)      539.    (feet) GPS OBS
 AB4804  ______________________________________________________________________
 AB4804  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4804  GEOID HEIGHT    -        -32.679 (meters)                     GEOID99
 AB4804  GEOID HEIGHT    -        -32.677 (meters)                     GEOID18
 AB4804  NAD 83(2011) X  -  1,095,767.282 (meters)                     COMP
 AB4804  NAD 83(2011) Y  - -4,796,887.363 (meters)                     COMP
 AB4804  NAD 83(2011) Z  -  4,044,899.409 (meters)                     COMP
 AB4804  LAPLACE CORR    -          4.81  (seconds)                    DEFLEC18
 AB4804
 AB4804  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4804  Standards:
 AB4804         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4804            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4804  -------------------------------------------------------------------
 AB4804  NETWORK    1.26   3.35           0.55   0.48   1.71     -0.00712150
 AB4804  -------------------------------------------------------------------
 AB4804  Click here for local accuracies and other accuracy information.
 AB4804
 AB4804.The horizontal coordinates were established by GPS observations
 AB4804.and adjusted by the National Geodetic Survey in June 2012.
 AB4804
 AB4804.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4804.been affixed to the stable North American tectonic plate. See 
 AB4804.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4804
 AB4804.The horizontal coordinates are valid at the epoch date displayed above
 AB4804.which is a decimal equivalence of Year/Month/Day.
 AB4804
 AB4804.The orthometric height was determined by GPS observations and a
 AB4804.high-resolution geoid model.
 AB4804
 AB4804.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4804.GEOID18 height accuracy estimate available here.
 AB4804
 AB4804.Click photographs - Photos may exist for this station.
 AB4804
 AB4804.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4804
 AB4804.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4804
 AB4804.The ellipsoidal height was determined by GPS observations
 AB4804.and is referenced to NAD 83.
 AB4804
 AB4804. The following values were computed from the NAD 83(2011) position.
 AB4804
 AB4804;                    North         East     Units Scale Factor Converg.
 AB4804;SPC MD       -   215,860.561   388,617.830   MT  1.00003216   -0 04 59.5
 AB4804;SPC MD       -   708,202.52  1,274,990.33   sFT  1.00003216   -0 04 59.5
 AB4804;UTM  18      - 4,386,769.411   316,930.858   MT  1.00001263   -1 21 36.1
 AB4804
 AB4804!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4804!SPC MD       -   0.99997936  x   1.00003216  =   1.00001152
 AB4804!UTM  18      -   0.99997936  x   1.00001263  =   0.99999199
 AB4804
 AB4804_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1693086769(NAD 83)
 AB4804
 AB4804|---------------------------------------------------------------------|
 AB4804| PID    Reference Object                     Distance      Geod. Az  |
 AB4804|                                                           dddmmss.s |
 AB4804| AB4789 CLEARVIEW AZ MK                     326.830 METERS 10523     |
 AB4804|---------------------------------------------------------------------|
 AB4804
 AB4804                          SUPERSEDED SURVEY CONTROL
 AB4804
 AB4804  NAD 83(2007)-  39 36 40.02965(N)    077 07 57.13467(W) AD(2002.00) 0
 AB4804  ELLIP H (02/10/07)  131.560  (m)                       GP(2002.00)    
 AB4804  ELLIP H (08/30/02)  131.553  (m)                       GP(       ) 4 2
 AB4804  NAD 83(1991)-  39 36 40.02897(N)    077 07 57.13533(W) AD(       ) 1
 AB4804  ELLIP H (07/03/96)  131.497  (m)                       GP(       ) 1 1
 AB4804  NAVD 88 (07/03/96)  164.2    (m)  GEOID93  model used  GPS OBS        
 AB4804
 AB4804.Superseded values are not recommended for survey control.
 AB4804
 AB4804.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4804.See file dsdata.pdf to determine how the superseded data were derived.
 AB4804
 AB4804_MARKER: DD = SURVEY DISK
 AB4804_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4804_STAMPING: CLEARVIEW 1995
 AB4804_MARK LOGO: MD-013
 AB4804_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4804_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4804+STABILITY: SURFACE MOTION
 AB4804_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4804+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4804
 AB4804  HISTORY     - Date     Condition        Report By
 AB4804  HISTORY     - 1995     MONUMENTED       MD-013
 AB4804
 AB4804                          STATION DESCRIPTION
 AB4804
 AB4804'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4804'STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) NORTHEAST OF UNION BRIDGE AND
 AB4804'ABOUT 4.0 MI (6.4 KM) SOUTHEAST OF TANEYTOWN. TO REACH STATION FROM
 AB4804'THE INTERSECTION OF MD ROUTE 84 (TREVAION ROAD) AND UNIONTOWN ROAD
 AB4804'JUST WEST OF UNIONTOWN, GO NORTH ON MD ROUTE 84 FOR 0.65 MI (1.05 KM)
 AB4804'TO THE INTERSECTION WITH TREVANION ROAD. CONTINUE STRAIGHT AHEAD NORTH
 AB4804'ON TREVANION ROAD FOR 1.0 MI (1.6 KM) TO THE INTERSECTION WITH
 AB4804'CLEARVIEW ROAD AND THE STATION ON THE RIGHT. STATION MARK IS SET IN
 AB4804'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4804'GROUND. IT IS 46.5 FT (14.2 M) NORTHEAST OF THE CENTERLINE OF
 AB4804'TREVANION ROAD, 126.5 FT (38.6 M) SOUTHEAST OF THE CENTERLINE OF
 AB4804'CLEARVIEW ROAD, 96.0 FT (29.3 M) SOUTHEAST OF A T.S. DISK IN A
 AB4804'HEADWALL ON THE SOUTHEAST SIDE OF THE INTERSECTION, 47.0 FT (14.3 M)
 AB4804'SOUTHEAST OF POWER POLE NO. F-770, 47.0 FT (14.3 M) SOUTH OF A 12 IN
 AB4804'WALNUT TREE, 120.9 FT (36.9 M) SOUTH OF A WELL, 146.6 FT (44.7 M)
 AB4804'SOUTHWEST OF THE WESTERNMOST CORNER OF HOUSE NO.1300 AND 56.4 FT (17.2
 AB4804'M) NORTHWEST OF TELEPHONE POLE NO.52.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6469 ***********************************************************************
 JV6469  SACS        -  This is a Secondary Airport Control Station.
 JV6469  DESIGNATION -  CLEARVIEW AP
 JV6469  PID         -  JV6469
 JV6469  STATE/COUNTY-  MD/CARROLL
 JV6469  COUNTRY     -  US
 JV6469  USGS QUAD   -  WINFIELD (2016)
 JV6469
 JV6469                         *CURRENT SURVEY CONTROL
 JV6469  ______________________________________________________________________
 JV6469* NAD 83(2011) POSITION- 39 27 56.85850(N) 077 00 53.52972(W)   ADJUSTED
 JV6469* NAD 83(2011) ELLIP HT-   210.457 (meters)        (06/27/12)   ADJUSTED
 JV6469* NAD 83(2011) EPOCH   -  2010.00
 JV6469* NAVD 88 ORTHO HEIGHT -   242.48  (meters)      795.5   (feet) GPS OBS
 JV6469  ______________________________________________________________________
 JV6469  NAVD 88 orthometric height was determined with an earlier geoid model
 JV6469  GEOID HEIGHT    -        -32.005 (meters)                     GEOID18
 JV6469  NAD 83(2011) X  -  1,107,937.990 (meters)                     COMP
 JV6469  NAD 83(2011) Y  - -4,804,695.172 (meters)                     COMP
 JV6469  NAD 83(2011) Z  -  4,032,506.164 (meters)                     COMP
 JV6469  LAPLACE CORR    -          0.56  (seconds)                    DEFLEC18
 JV6469
 JV6469  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6469  Standards:
 JV6469         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6469            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6469  -------------------------------------------------------------------
 JV6469  NETWORK    0.35   2.35           0.16   0.12   1.20      0.08463076
 JV6469  -------------------------------------------------------------------
 JV6469  Click here for local accuracies and other accuracy information.
 JV6469
 JV6469.This mark is at Clearview Airpark  (2W2)
 JV6469
 JV6469.The horizontal coordinates were established by GPS observations
 JV6469.and adjusted by the National Geodetic Survey in June 2012.
 JV6469
 JV6469.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6469.been affixed to the stable North American tectonic plate. See 
 JV6469.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6469
 JV6469.The horizontal coordinates are valid at the epoch date displayed above
 JV6469.which is a decimal equivalence of Year/Month/Day.
 JV6469
 JV6469.The orthometric height was determined by GPS observations and a
 JV6469.high-resolution geoid model.
 JV6469
 JV6469.GPS derived orthometric heights for airport stations designated as
 JV6469.PACS or SACS are published to 2 decimal places.  This maintains
 JV6469.centimeter relative accuracy between the PACS and SACS.  It does
 JV6469.not indicate centimeter accuracy relative to other marks which are
 JV6469.part of the published vertical control network.
 JV6469
 JV6469.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6469.GEOID18 height accuracy estimate available here.
 JV6469
 JV6469.Click photographs - Photos may exist for this station.
 JV6469
 JV6469.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6469
 JV6469.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6469
 JV6469.The ellipsoidal height was determined by GPS observations
 JV6469.and is referenced to NAD 83.
 JV6469
 JV6469. The following values were computed from the NAD 83(2011) position.
 JV6469
 JV6469;                    North         East     Units Scale Factor Converg.
 JV6469;SPC MD       -   199,717.284   398,720.405   MT  1.00000280   -0 00 33.6
 JV6469;SPC MD       -   655,239.12  1,308,135.20   sFT  1.00000280   -0 00 33.6
 JV6469;UTM  18      - 4,370,405.893   326,671.697   MT  0.99996990   -1 16 51.6
 JV6469
 JV6469!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6469!SPC MD       -   0.99996698  x   1.00000280  =   0.99996978
 JV6469!UTM  18      -   0.99996698  x   0.99996990  =   0.99993688
 JV6469
 JV6469:                Primary Azimuth Mark                     Grid Az
 JV6469:SPC MD       -  CLEARVIEW AP AZ MK                       301 34 34.4
 JV6469:UTM  18      -  CLEARVIEW AP AZ MK                       302 50 52.4
 JV6469
 JV6469_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2667170405(NAD 83)
 JV6469
 JV6469|---------------------------------------------------------------------|
 JV6469| PID    Reference Object                     Distance      Geod. Az  |
 JV6469|                                                           dddmmss.s |
 JV6469| AE3588 2W2 A                               279.562 METERS 29830     |
 JV6469| JV6470 CLEARVIEW AP AZ MK                  486.294 METERS 3013400.8 |
 JV6469|---------------------------------------------------------------------|
 JV6469
 JV6469                          SUPERSEDED SURVEY CONTROL
 JV6469
 JV6469  NAD 83(2007)-  39 27 56.85869(N)    077 00 53.53059(W) AD(2002.00) 0
 JV6469  ELLIP H (02/10/07)  210.483  (m)                       GP(2002.00)    
 JV6469  ELLIP H (01/21/03)  210.464  (m)                       GP(       ) 4 1
 JV6469  NAD 83(1991)-  39 27 56.85829(N)    077 00 53.53006(W) AD(       ) 1
 JV6469  ELLIP H (01/27/92)  210.427  (m)                       GP(       ) 4 1
 JV6469  NAD 83(1986)-  39 27 56.85716(N)    077 00 53.54168(W) AD(       ) 1
 JV6469  NAD 27      -  39 27 56.48460(N)    077 00 54.63278(W) AD(       ) 1
 JV6469  NGVD 29 (11/20/87)  242.46   (m)  RAPOU78  model used  GPS OBS        
 JV6469
 JV6469.Superseded values are not recommended for survey control.
 JV6469
 JV6469.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6469.See file dsdata.pdf to determine how the superseded data were derived.
 JV6469
 JV6469_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6469_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6469_STAMPING: CLEARVIEW AP 1985
 JV6469_MARK LOGO: NGS
 JV6469_PROJECTION: FLUSH
 JV6469_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6469_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6469+STABILITY: SURFACE MOTION
 JV6469_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6469+SATELLITE: SATELLITE OBSERVATIONS - November 12, 1996
 JV6469
 JV6469  HISTORY     - Date     Condition        Report By
 JV6469  HISTORY     - 1985     MONUMENTED       NGS
 JV6469  HISTORY     - 19860116 GOOD
 JV6469  HISTORY     - 19961112 GOOD             NGS
 JV6469
 JV6469                          STATION DESCRIPTION
 JV6469
 JV6469'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 JV6469'THERE NO REFERENCE MARKS AT THIS STATION.
 JV6469'
 JV6469'THE STATION IS LOCATED ABOUT 12-3/4 KM (8 MI) SOUTH FROM WESTMINISTER
 JV6469'8 KM (5 MI) WEST FROM GAMBER AND 6-1/2 KM (4 MI) NORTHEAST FROM
 JV6469'WINFIELD.
 JV6469'
 JV6469'OWNERSHIP--AIRPORT PROPERTY.
 JV6469'
 JV6469'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 97 AND
 JV6469'140 IN THE NORTHEAST EDGE OF WESTMINISTER, GO SOUTH ON STATE HIGHWAY
 JV6469'97 FOR 12.85 KM (8.0 MI) TO A ROAD RIGHT.  TURN RIGHT AND GO WEST ON
 JV6469'BARTHOLOW ROAD FOR 0.25 KM (0.15 MI) TO A T-INTERSECTION.  TURN RIGHT
 JV6469'AND GO NORTH ON WASHINGTON ROAD FOR 0.4 KM (0.25 MI) TO A
 JV6469'T-INTERSECTION. TURN LEFT AND GO WEST ON BEAR BRANCH ROAD FOR 0.95 KM
 JV6469'(0.6 MI) TO A T-INTERSECTION.  TURN RIGHT AND GO NORTH ON ROAD FOR
 JV6469'0.25 KM (0.15 MI) TO THE STATION ON THE LEFT.
 JV6469'
 JV6469'THE STATION IS A STANDARD NGS DISK STAMPED--CLEARVIEW AP 1985--SET
 JV6469'INTO THE TOP OF A 25 CM (10 INCH) ROUND CONCRETE MONUMENT FLUSH WITH
 JV6469'THE SURFACE OF THE GROUND.
 JV6469'
 JV6469'THE STATION IS LOCATED 13.7 M (45.0 FT) NE FROM THE CENTER OF THE
 JV6469'AIRPORT RUNWAY, 11.1 M (36.5 FT) SE OF THE MOST SOUTHEAST WHITE LIGHT
 JV6469'FOR THE RUNWAY, 27.4 M (90.0 FT) NW OF THE CENTER OF OAK TREE ROAD
 JV6469'AND 0.6 M (2.0 FT) OF A WITNESS POST.
 JV6469'
 JV6469'THE AZIMUTH MARK IS A STANDARD NGS DISK STAMPED--CLEARVIEW AP 1985--
 JV6469'SET INTO THE TOP OF A 25 CM (10 INCH) ROUND CONCRETE MONUMENT WHICH
 JV6469'IS FLUSH WITH THE GROUND.
 JV6469'
 JV6469'THE AZIMUTH MARK IS LOCATED 12.2 M (40.0 FT) SW FROM THE CENTER OF
 JV6469'THE RUNWAY, 55.4 M (181.8 FT) S OF THE MOST NORTHWEST END OF THE
 JV6469'RUNWAYS CENTER LINE, 2.4 M (8.0 FT) W FROM THE MOST NORTHWEST WHITE
 JV6469'RUNWAY LIGHT AND 0.6 M (2.0 FT) OF A WITNESS POST.
 JV6469'
 JV6469'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTHWEST ALONG THE
 JV6469'RUNWAY FOR 0.5 KM (0.3 MI) TO THE MARK ON THE LEFT.
 JV6469'
 JV6469'THE SUB-SURFACE MARK IS A STANDARD NGS DISK STAMPED--CLEARVIEW AP
 JV6469'1985 IN AN IRREGULAR MASS OF CONCRETE 1.2 M (3.9 FT) BELOW THE
 JV6469'SURFACE.
 JV6469
 JV6469                          STATION RECOVERY (1986)
 JV6469
 JV6469'RECOVERED 1986
 JV6469'RECOVERED IN GOOD CONDITION.
 JV6469
 JV6469                          STATION RECOVERY (1996)
 JV6469
 JV6469'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 JV6469'THE STATION IS LOCATED ABOUT 12.9 KM (8.00 MI) SOUTH FROM WESTMINSTER,
 JV6469'8.0 KM (4.95 MI) WEST FROM GAMBER, AND 6.4 KM (3.95 MI) NORTHEAST FROM
 JV6469'WINFIELD, AT THE CLEARVIEW AIRPARK.  OWNERSHIP --- CLEARVIEW AIRPORT
 JV6469'INC.--- CONTACT AIRPORT MANAGER LOWELL SEAL, PHONE 410-795 - 9840 FOR
 JV6469'PERMISSION TO OCCUPY STATION.  TO REACH FROM THE INTERSECTION OF STATE
 JV6469'HIGHWAYS 97 AND 140 IN THE NORTHEAST EDGE OF WESTMINSTER, GO SOUTH ON
 JV6469'SH 97 FOR 12.85 KM (8.00 MI) TO A ROAD ON THE RIGHT.  TURN RIGHT AND
 JV6469'GO WEST ON BARTHOLLOW RD FOR 0.25 KM (0.15 MI) TO A T-INTERSECTION.
 JV6469'TURN RIGHT AND GO NORTH ON WASHINGTON RD FOR 0.4 KM (0.25 MI) TO A
 JV6469'T-INTERSECTION.  TURN LEFT AND GO WEST ON BEAR BRANCH ROAD FOR 0.95 KM
 JV6469'(0.60 MI) TO A T-INTERSECTION.  TURN RIGHT AND GO NORTH ON ROAD FOR
 JV6469'0.25 KM (0.15 MI) TO THE STATION ON THE LEFT IN THE CENTER OF A JUG
 JV6469'HANDLE TURN-AROUND FOR RUNWAY END 31.  THE STATION IS A STANDARD NGS
 JV6469'DISK STAMPED--CLEARVIEW AP 1985--SET INTO THE TOP OF A 25 CM ROUND
 JV6469'CONCRETE MONUMENT FLUSH WITH THE SURFACE OF THE GROUND.  THE STATION
 JV6469'IS LOCATED 27.4 M (89.9 FT) NORTHWEST OF THE CENTER OF OAK TREE ROAD,
 JV6469'13.7 M (44.9 FT) NORTHEAST FROM THE CENTER OF THE AIRPORT RUNWAY, 11.3
 JV6469'M (37.1 FT) SOUTHEAST OF THE MOST SOUTHEAST WHITE RUNWAY LIGHT AND 0.6
 JV6469'M (2.0 FT) WEST OF A WITNESS POST.  THIS STATION IS A SECONDARY
 JV6469'AIRPORT CONTROL STATION (SACS) .
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6470 ***********************************************************************
 JV6470  SACS        -  This is a Secondary Airport Control Station.
 JV6470  DESIGNATION -  CLEARVIEW AP AZ MK
 JV6470  PID         -  JV6470
 JV6470  STATE/COUNTY-  MD/CARROLL
 JV6470  COUNTRY     -  US
 JV6470  USGS QUAD   -  WINFIELD (2016)
 JV6470
 JV6470                         *CURRENT SURVEY CONTROL
 JV6470  ______________________________________________________________________
 JV6470* NAD 83(2011) POSITION- 39 28 05.11271(N) 077 01 10.86342(W)   ADJUSTED
 JV6470* NAD 83(2011) ELLIP HT-   200.454 (meters)        (06/27/12)   ADJUSTED
 JV6470* NAD 83(2011) EPOCH   -  2010.00
 JV6470* NAVD 88 ORTHO HEIGHT -   232.48  (meters)      762.7   (feet) GPS OBS
 JV6470  ______________________________________________________________________
 JV6470  NAVD 88 orthometric height was determined with an earlier geoid model
 JV6470  GEOID HEIGHT    -        -32.011 (meters)                     GEOID18
 JV6470  NAD 83(2011) X  -  1,107,496.138 (meters)                     COMP
 JV6470  NAD 83(2011) Y  - -4,804,623.060 (meters)                     COMP
 JV6470  NAD 83(2011) Z  -  4,032,696.331 (meters)                     COMP
 JV6470  LAPLACE CORR    -          0.74  (seconds)                    DEFLEC18
 JV6470
 JV6470  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6470  Standards:
 JV6470         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6470            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6470  -------------------------------------------------------------------
 JV6470  NETWORK    0.37   2.37           0.17   0.13   1.21      0.09070746
 JV6470  -------------------------------------------------------------------
 JV6470  Click here for local accuracies and other accuracy information.
 JV6470
 JV6470.This mark is at Clearview Airpark  (2W2)
 JV6470
 JV6470.The horizontal coordinates were established by GPS observations
 JV6470.and adjusted by the National Geodetic Survey in June 2012.
 JV6470
 JV6470.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6470.been affixed to the stable North American tectonic plate. See 
 JV6470.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6470
 JV6470.The horizontal coordinates are valid at the epoch date displayed above
 JV6470.which is a decimal equivalence of Year/Month/Day.
 JV6470
 JV6470.The orthometric height was determined by GPS observations and a
 JV6470.high-resolution geoid model.
 JV6470
 JV6470.GPS derived orthometric heights for airport stations designated as
 JV6470.PACS or SACS are published to 2 decimal places.  This maintains
 JV6470.centimeter relative accuracy between the PACS and SACS.  It does
 JV6470.not indicate centimeter accuracy relative to other marks which are
 JV6470.part of the published vertical control network.
 JV6470
 JV6470.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6470.GEOID18 height accuracy estimate available here.
 JV6470
 JV6470.Click photographs - Photos may exist for this station.
 JV6470
 JV6470.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6470
 JV6470.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6470
 JV6470.The ellipsoidal height was determined by GPS observations
 JV6470.and is referenced to NAD 83.
 JV6470
 JV6470. The following values were computed from the NAD 83(2011) position.
 JV6470
 JV6470;                    North         East     Units Scale Factor Converg.
 JV6470;SPC MD       -   199,971.924   398,306.108   MT  1.00000321   -0 00 44.5
 JV6470;SPC MD       -   656,074.55  1,306,775.96   sFT  1.00000321   -0 00 44.5
 JV6470;UTM  18      - 4,370,669.657   326,263.167   MT  0.99997165   -1 17 02.9
 JV6470
 JV6470!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6470!SPC MD       -   0.99996855  x   1.00000321  =   0.99997176
 JV6470!UTM  18      -   0.99996855  x   0.99997165  =   0.99994020
 JV6470
 JV6470:                Primary Azimuth Mark                     Grid Az
 JV6470:SPC MD       -  CLEARVIEW AP                             121 34 34.3
 JV6470:UTM  18      -  CLEARVIEW AP                             122 50 52.7
 JV6470
 JV6470_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2626370669(NAD 83)
 JV6470
 JV6470|---------------------------------------------------------------------|
 JV6470| PID    Reference Object                     Distance      Geod. Az  |
 JV6470|                                                           dddmmss.s |
 JV6470| JV6469 CLEARVIEW AP                        486.294 METERS 1213349.8 |
 JV6470|---------------------------------------------------------------------|
 JV6470
 JV6470                          SUPERSEDED SURVEY CONTROL
 JV6470
 JV6470  NAD 83(2007)-  39 28 05.11290(N)    077 01 10.86429(W) AD(2002.00) 0
 JV6470  ELLIP H (02/10/07)  200.480  (m)                       GP(2002.00)    
 JV6470  ELLIP H (01/21/03)  200.497  (m)                       GP(       ) 4 1
 JV6470  NAD 83(1991)-  39 28 05.11251(N)    077 01 10.86351(W) AD(       ) 1
 JV6470  ELLIP H (01/27/92)  200.425  (m)                       GP(       ) 4 1
 JV6470  NAD 83(1986)-  39 28 05.11138(N)    077 01 10.87513(W) AD(       ) 1
 JV6470  NAD 27      -  39 28 04.73894(N)    077 01 11.96560(W) AD(       ) 1
 JV6470  NGVD 29 (11/20/87)  232.56   (m)  RAPOU78  model used  GPS OBS        
 JV6470
 JV6470.Superseded values are not recommended for survey control.
 JV6470
 JV6470.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6470.See file dsdata.pdf to determine how the superseded data were derived.
 JV6470
 JV6470_MARKER: DZ = AZIMUTH MARK DISK
 JV6470_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6470_STAMPING: CLEARVIEW 1985
 JV6470_MARK LOGO: NGS
 JV6470_PROJECTION: FLUSH
 JV6470_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6470_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6470+STABILITY: SURFACE MOTION
 JV6470_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6470+SATELLITE: SATELLITE OBSERVATIONS - November 12, 1996
 JV6470
 JV6470  HISTORY     - Date     Condition        Report By
 JV6470  HISTORY     - 1985     MONUMENTED       NGS
 JV6470  HISTORY     - 19860121 GOOD
 JV6470  HISTORY     - 19961112 GOOD             NGS
 JV6470
 JV6470                          STATION DESCRIPTION
 JV6470
 JV6470'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 JV6470'THE STATION IS LOCATED ABOUT 12-3/4 KM (8 MI) SOUTH FROM WESTMINISTER
 JV6470'8 KM (5 MI) WEST FROM GAMBER AND 6-1/2 KM (4 MI) NORTHEAST FROM
 JV6470'WINFIELD.
 JV6470'
 JV6470'OWNERSHIP--AIRPORT PROPERTY.
 JV6470'
 JV6470'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 97 AND 140 IN THE
 JV6470'NORTHEAST PART OF WESTMINISTER, GO SOUTH ON STATE HIGHWAY 97 FOR
 JV6470'12.85 KM (8.0 MI) TO A ROAD RIGHT.  TURN RIGHT AND GO WEST ON
 JV6470'BARTHOLOW ROAD FOR 0.25 KM (0.15 MI) TO A T-INTERSECTION.  TURN RIGHT
 JV6470'AND GO NORTH ON WASHINGTON ROAD FOR 0.4 KM (0.25 MI) TO A
 JV6470'T-INTERSECTION.  TURN LEFT AND GO WEST ON BEAR BRANCH ROAD FOR 0.95
 JV6470'KM (0.6 MI) TO A T-INTERSECTION.  TURN RIGHT AND GO NORTHERLY ON OAK
 JV6470'TREE ROAD FOR 0.25 KM (0.15 MI) TO THE CLEARVIEW AIRPORT.  TURN LEFT
 JV6470'AND GO NORTHWEST ALONG THE SOUTHWEST SIDE OF THE RUNWAY FOR 0.5 KM
 JV6470'(0.3 MI) TO THE STATION.
 JV6470'
 JV6470'THE STATION SURFACE MARK IS A STANDARD NGS AZIMUTH DISK STAMPED--
 JV6470'CLEARVIEW AP 1985--SET IN THE TOP OF A 25 CM (10 INCH) ROUND CONCRETE
 JV6470'MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.
 JV6470'
 JV6470'THE SUB-SURFACE MARK IS A STANDARD NGS AZIMUTH MARK STAMPED--
 JV6470'CLEARVIEW AP 1985--SET IN THE TOP OF A IRREGULAR MASS OF CONCRETE
 JV6470'1.2 METERS (3.9 FT) BELOW THE SURFACE OF THE GROUND.
 JV6470'
 JV6470'THE AZIMUTH MARK IS LOCATED 12.4 METERS (40.0 FT) SOUTHWEST FROM THE
 JV6470'CENTER OF THE RUNWAY, 55.4 METERS (181.8 FT) EAST FROM THE NORTHWEST
 JV6470'END OF RUNWAYS CENTER LINE, 2.4 METERS (8.0 FT) WEST FROM THE MOST
 JV6470'NORTHWEST WHITE RUNWAY LIGHT AND 0.6 METERS (2.0 FT) NORTHWEST FROM
 JV6470'A CARSONITE WITNESS POST.
 JV6470
 JV6470                          STATION RECOVERY (1986)
 JV6470
 JV6470'RECOVERED 1986
 JV6470'RECOVERED IN GOOD CONDITION.
 JV6470
 JV6470                          STATION RECOVERY (1996)
 JV6470
 JV6470'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 JV6470'THE STATION IS LOCATED ABOUT 12.9 KM (8.00 MI) SOUTH FROM WESTMINSTER,
 JV6470'8.0 KM (4.95 MI) WEST FROM GAMBER, AND 6.4 KM (3.95 MI) NORTHEAST FROM
 JV6470'WINFIELD, NEAR THE NORTH END OF THE CLEARVIEW AIRPARK. OWNERSHIP ---
 JV6470'CLEARVIEW AIRPORT INC.--- CONTACT THE AIRPORT MANAGER LOWELL SEAL
 JV6470'PHONE 410-795-9840 FOR PERMISSION TO OCCUPY STATION.  TO REACH FROM
 JV6470'THE INTERSECTION OF STATE HIGHWAYS 97 AND 140 IN THE NORTHEAST EDGE OF
 JV6470'WESTMINSTER, GO SOUTH ON SH 97 FOR 12.9 KM (8.00 MI) TO A ROAD ON THE
 JV6470'RIGHT.  TURN RIGHT AND GO WEST ON BARTHOLLOW ROAD FOR 0.24 KM (0.15
 JV6470'MI) TO A T-INTERSECTION.  TURN RIGHT AND GO NORTH ON WASHINGTON ROAD
 JV6470'FOR 0.40 KM (0.25 MI) TO A T-INTERSECTION.  TURN LEFT AND GO WEST ON
 JV6470'BEAR BRANCH ROAD FOR 0.95 KM (0.60 MI) TO A T-INTERSECTION.TURN RIGHT
 JV6470'AND GO NORTHERLY ON OAK TREE ROAD FOR 0.25 KM (0.15 MI) TO THE
 JV6470'CLEARVIEW AIRPORT.  TURN LEFT AND GO NORTHWEST ALONG THE SOUTHWEST
 JV6470'SIDE OF THE RUNWAY FOR 0.5 KM (0.30 MI) TO THE STATION ON THE LEFT.
 JV6470'THE STATION SURFACE MARK IS A STANDARD NGS AZIMUTH DISK STAMPED
 JV6470'---CLEARVIEW AP 1985--- SET IN THE TOP OF A 25 CM ROUND CONCRETE
 JV6470'MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  THE AZIMUTH
 JV6470'MARK IS LOCATED 55.4 M (181.8 FT) SOUTH FROM THE NORTHWEST END OF THE
 JV6470'RUNWAY CENTERLINE, 12.4 M (40.7 FT) SOUTHWEST FROM THE CENTER OF THE
 JV6470'RUNWAY, 2.4 M (7.9 FT) WEST OF THE MOST NORTHWEST WHITE RUNWAY LIGHT
 JV6470'AND 0.6 M (2.0 FT) NORTHWEST FROM A WITNESS POST.  NOTE--THIS STATION
 JV6470'IS A SECONDARY AIRPORT CONTROL STATION, (SACS) .
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4789 ***********************************************************************
 AB4789  DESIGNATION -  CLEARVIEW AZ MK
 AB4789  PID         -  AB4789
 AB4789  STATE/COUNTY-  MD/CARROLL
 AB4789  COUNTRY     -  US
 AB4789  USGS QUAD   -  UNION BRIDGE (2016)
 AB4789
 AB4789                         *CURRENT SURVEY CONTROL
 AB4789  ______________________________________________________________________
 AB4789* NAD 83(2011) POSITION- 39 36 37.21699(N) 077 07 43.92445(W)   ADJUSTED
 AB4789* NAD 83(2011) ELLIP HT-   133.593 (meters)        (06/27/12)   ADJUSTED
 AB4789* NAD 83(2011) EPOCH   -  2010.00
 AB4789* NAVD 88 ORTHO HEIGHT -   166.3   (meters)      546.    (feet) GPS OBS
 AB4789  ______________________________________________________________________
 AB4789  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4789  GEOID HEIGHT    -        -32.668 (meters)                     GEOID99
 AB4789  GEOID HEIGHT    -        -32.665 (meters)                     GEOID18
 AB4789  NAD 83(2011) X  -  1,096,087.154 (meters)                     COMP
 AB4789  NAD 83(2011) Y  - -4,796,872.629 (meters)                     COMP
 AB4789  NAD 83(2011) Z  -  4,044,833.897 (meters)                     COMP
 AB4789  LAPLACE CORR    -          4.81  (seconds)                    DEFLEC18
 AB4789
 AB4789  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4789  Standards:
 AB4789         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4789            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4789  -------------------------------------------------------------------
 AB4789  NETWORK    1.12   2.61           0.49   0.42   1.33      0.01937780
 AB4789  -------------------------------------------------------------------
 AB4789  Click here for local accuracies and other accuracy information.
 AB4789
 AB4789.The horizontal coordinates were established by GPS observations
 AB4789.and adjusted by the National Geodetic Survey in June 2012.
 AB4789
 AB4789.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4789.been affixed to the stable North American tectonic plate. See 
 AB4789.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4789
 AB4789.The horizontal coordinates are valid at the epoch date displayed above
 AB4789.which is a decimal equivalence of Year/Month/Day.
 AB4789
 AB4789.The orthometric height was determined by GPS observations and a
 AB4789.high-resolution geoid model.
 AB4789
 AB4789.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4789.GEOID18 height accuracy estimate available here.
 AB4789
 AB4789.Click photographs - Photos may exist for this station.
 AB4789
 AB4789.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4789
 AB4789.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4789
 AB4789.The ellipsoidal height was determined by GPS observations
 AB4789.and is referenced to NAD 83.
 AB4789
 AB4789. The following values were computed from the NAD 83(2011) position.
 AB4789
 AB4789;                    North         East     Units Scale Factor Converg.
 AB4789;SPC MD       -   215,773.373   388,932.827   MT  1.00003198   -0 04 51.2
 AB4789;SPC MD       -   707,916.47  1,276,023.78   sFT  1.00003198   -0 04 51.2
 AB4789;UTM  18      - 4,386,675.228   317,243.828   MT  1.00001122   -1 21 27.6
 AB4789
 AB4789!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4789!SPC MD       -   0.99997904  x   1.00003198  =   1.00001102
 AB4789!UTM  18      -   0.99997904  x   1.00001122  =   0.99999026
 AB4789
 AB4789_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1724386675(NAD 83)
 AB4789
 AB4789|---------------------------------------------------------------------|
 AB4789| PID    Reference Object                     Distance      Geod. Az  |
 AB4789|                                                           dddmmss.s |
 AB4789| AB4804 CLEARVIEW                           326.830 METERS 28523     |
 AB4789|---------------------------------------------------------------------|
 AB4789
 AB4789                          SUPERSEDED SURVEY CONTROL
 AB4789
 AB4789  NAD 83(2007)-  39 36 37.21734(N)    077 07 43.92504(W) AD(2002.00) 0
 AB4789  ELLIP H (02/10/07)  133.613  (m)                       GP(2002.00)    
 AB4789  ELLIP H (08/30/02)  133.610  (m)                       GP(       ) 4 2
 AB4789  NAD 83(1991)-  39 36 37.21658(N)    077 07 43.92575(W) AD(       ) 1
 AB4789  ELLIP H (07/03/96)  133.550  (m)                       GP(       ) 1 1
 AB4789  NAVD 88 (07/03/96)  166.3    (m)  GEOID93  model used  GPS OBS        
 AB4789
 AB4789.Superseded values are not recommended for survey control.
 AB4789
 AB4789.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4789.See file dsdata.pdf to determine how the superseded data were derived.
 AB4789
 AB4789_MARKER: DD = SURVEY DISK
 AB4789_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4789_STAMPING: CLEARVIEW AZI 1995
 AB4789_MARK LOGO: MD-013
 AB4789_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4789_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4789+STABILITY: SURFACE MOTION
 AB4789_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4789+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4789
 AB4789  HISTORY     - Date     Condition        Report By
 AB4789  HISTORY     - 1995     MONUMENTED       MD-013
 AB4789
 AB4789                          STATION DESCRIPTION
 AB4789
 AB4789'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4789'STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) NORTHEAST OF UNION BRIDGE AND
 AB4789'ABOUT 4.0 MI (6.4 KM) SOUTHEAST OF TANEYTOWN. TO REACH STATION FROM
 AB4789'THE INTERSECTION OF MD ROUTE 84 (TREVANION ROAD) AND UNIONTOWN ROAD
 AB4789'JUST WEST OF UNIONTOWN, GO NORTH ON MD ROUTE 84 FOR 0.65 MI (1.05 KM)
 AB4789'TO THE INTERSECTION WITH TREVANION ROAD. CONTINUE STRAIGHT AHEAD NORTH
 AB4789'ON TREVANION ROAD FOR 0.7 MI (1.1 KM) TO THE STATION ON THE RIGHT.
 AB4789'STATION IS ALSO 4.1 MI (6.6 KM) SOUTH OF THE BEGINNING OF TREVANION
 AB4789'ROAD AT TANEYTOWN. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AB4789'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 33.0 FT (10.1 M)
 AB4789'NORTH OF THE CENTERLINE OF THE ROAD, 146 FT (44.5 M) EAST OF THE GUY
 AB4789'POLE FOR TELEPHONE POLE NO.46 AND 68.0 FT (20.7 M) SOUTHWEST OF POWER
 AB4789'POLE NO.F-28043.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5784 ***********************************************************************
 JV5784  DESIGNATION -  CLEM
 JV5784  PID         -  JV5784
 JV5784  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5784  COUNTRY     -  US
 JV5784  USGS QUAD   -  ROUND BAY (2016)
 JV5784
 JV5784                         *CURRENT SURVEY CONTROL
 JV5784  ______________________________________________________________________
 JV5784* NAD 83(1991) POSITION- 39 01 16.11887(N) 076 31 38.45055(W)   ADJUSTED
 JV5784* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 JV5784  ______________________________________________________________________
 JV5784  GEOID HEIGHT    -        -33.202 (meters)                     GEOID18
 JV5784  LAPLACE CORR    -         -4.21  (seconds)                    DEFLEC18
 JV5784  HORZ ORDER      -  THIRD
 JV5784
 JV5784.The horizontal coordinates were established by classical geodetic methods
 JV5784.and adjusted by the National Geodetic Survey in January 1992.
 JV5784
 JV5784.The orthometric height was scaled from a topographic map.
 JV5784
 JV5784.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5784.GEOID18 height accuracy estimate available here.
 JV5784
 JV5784.Click photographs - Photos may exist for this station.
 JV5784
 JV5784.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5784
 JV5784. The following values were computed from the NAD 83(1991) position.
 JV5784
 JV5784;                    North         East     Units Scale Factor Converg.
 JV5784;SPC MD       -   150,459.386   440,929.904   MT  0.99995305   +0 17 48.0
 JV5784;SPC MD       -   493,632.17  1,446,617.53   sFT  0.99995305   +0 17 48.0
 JV5784;UTM  18      - 4,320,232.680   367,780.403   MT  0.99981526   -0 57 42.4
 JV5784
 JV5784!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5784!SPC MD       -   0.99999991  x   0.99995305  =   0.99995296
 JV5784!UTM  18      -   0.99999991  x   0.99981526  =   0.99981517
 JV5784
 JV5784:                Primary Azimuth Mark                     Grid Az
 JV5784:SPC MD       -  BREWER                                   328 39 42.2
 JV5784:UTM  18      -  BREWER                                   329 55 12.6
 JV5784
 JV5784_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6778020232(NAD 83)
 JV5784
 JV5784|---------------------------------------------------------------------|
 JV5784| PID    Reference Object                     Distance      Geod. Az  |
 JV5784|                                                           dddmmss.s |
 JV5784| JV5783 SALT                                APPROX. 0.6 KM 1652525.5 |
 JV5784| CB1089 CLEM RM                              10.070 METERS 23851     |
 JV5784| JV5754 BREWER                              APPROX. 0.9 KM 3285730.2 |
 JV5784|---------------------------------------------------------------------|
 JV5784
 JV5784                          SUPERSEDED SURVEY CONTROL
 JV5784
 JV5784  NAD 83(1986)-  39 01 16.11526(N)    076 31 38.46159(W) AD(       ) 3
 JV5784  NAD 27      -  39 01 15.71500(N)    076 31 39.60000(W) AD(       ) 3
 JV5784  USSD        -  39 01 16.06800(N)    076 31 39.44300(W) AD(       ) 3
 JV5784
 JV5784.Superseded values are not recommended for survey control.
 JV5784
 JV5784.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5784.See file dsdata.pdf to determine how the superseded data were derived.
 JV5784
 JV5784
 JV5784  HISTORY     - Date     Condition        Report By
 JV5784  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5784  HISTORY     - 1906     GOOD             CGS
 JV5784  HISTORY     - 1934     MARK NOT FOUND   CGS
 JV5784
 JV5784                          STATION DESCRIPTION
 JV5784
 JV5784'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5784'ON THE SW SHORE OF SEVERN RIVER, ON LOW SAND POINT BETWEEN
 JV5784'CLEMENTS CREEK AND BREWER CREEK, ABOUT 2 FEET ABOVE AND 35 FEET
 JV5784'BACK FROM HIGH-WATER MARK.  STATION MARK IS NAIL IN STUB FLUSH
 JV5784'WITH GROUND SET IN 4-INCH TILE PIPE WITH TOP 4 INCHES BELOW
 JV5784'SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE
 JV5784'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 JV5784'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 JV5784'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 JV5784'ARE COUNTER-SUNK IN TOP OF POST.  IT IS 10.07 METERS (33.0 FEET)
 JV5784'FROM STATION S 58 DEG 51 MIN W.  DISTANCES AND
 JV5784'BEARINGS FROM THE STATION TO OTHER POINTS OF REFERENCE ARE AS
 JV5784'FOLLOWS--CHIMNEY ON YELLOW HOUSE, 300 YARDS, S 86 DEG
 JV5784'17 MIN W.  SMALL 2 1/2-INCH LOCUST TREE, 30 YARDS, N 33
 JV5784'DEG 02 MIN W.  WINDMILL ON OPPOSITE SHORE, 1/2 MILE, N 51
 JV5784'DEG 46 MIN E.  WATER TOWER OPPOSITE NAVAL ACADEMY, 3 MILES, S 52 DEG
 JV5784'41 MIN E.  CHIMNEY IN CENTER OF YELLOW HOUSE, 1 MILE, S 40 DEG 47
 JV5784'MIN E.  N CHIMNEY OF HOUSE ON S SIDE OF CLEMENT CREEK, 1/2
 JV5784'MILE, S 6 DEG 57 MIN E.
 JV5784
 JV5784                          STATION RECOVERY (1934)
 JV5784
 JV5784'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5784'THE STATION COULD NOT BE RECOVERED.  SEVERAL VERY SMALL (2-INCH)
 JV5784'LOCUST TREES ARE ON THE SAND POINT.  NONE OF THE OTHER POINTS OF
 JV5784'REFERENCE AS DESCRIBED COULD BE IDENTIFIED.  IT IS RECOMMENDED
 JV5784'THAT THE STATION BE REPORTED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4721 ***********************************************************************
 AB4721  DESIGNATION -  CLEM
 AB4721  PID         -  AB4721
 AB4721  STATE/COUNTY-  MD/CARROLL
 AB4721  COUNTRY     -  US
 AB4721  USGS QUAD   -  MANCHESTER (2016)
 AB4721
 AB4721                         *CURRENT SURVEY CONTROL
 AB4721  ______________________________________________________________________
 AB4721* NAD 83(2011) POSITION- 39 40 00.40817(N) 076 56 28.22770(W)   ADJUSTED
 AB4721* NAD 83(2011) ELLIP HT-   185.687 (meters)        (06/27/12)   ADJUSTED
 AB4721* NAD 83(2011) EPOCH   -  2010.00
 AB4721* NAVD 88 ORTHO HEIGHT -   218.1   (meters)      716.    (feet) GPS OBS
 AB4721  ______________________________________________________________________
 AB4721  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4721  GEOID HEIGHT    -        -32.441 (meters)                     GEOID99
 AB4721  GEOID HEIGHT    -        -32.431 (meters)                     GEOID18
 AB4721  NAD 83(2011) X  -  1,110,900.923 (meters)                     COMP
 AB4721  NAD 83(2011) Y  - -4,789,400.881 (meters)                     COMP
 AB4721  NAD 83(2011) Z  -  4,049,693.079 (meters)                     COMP
 AB4721  LAPLACE CORR    -          3.99  (seconds)                    DEFLEC18
 AB4721
 AB4721  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4721  Standards:
 AB4721         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4721            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4721  -------------------------------------------------------------------
 AB4721  NETWORK    1.14   4.45           0.47   0.46   2.27     -0.17791827
 AB4721  -------------------------------------------------------------------
 AB4721  Click here for local accuracies and other accuracy information.
 AB4721
 AB4721.The horizontal coordinates were established by GPS observations
 AB4721.and adjusted by the National Geodetic Survey in June 2012.
 AB4721
 AB4721.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4721.been affixed to the stable North American tectonic plate. See 
 AB4721.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4721
 AB4721.The horizontal coordinates are valid at the epoch date displayed above
 AB4721.which is a decimal equivalence of Year/Month/Day.
 AB4721
 AB4721.The orthometric height was determined by GPS observations and a
 AB4721.high-resolution geoid model.
 AB4721
 AB4721.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4721.GEOID18 height accuracy estimate available here.
 AB4721
 AB4721.Click photographs - Photos may exist for this station.
 AB4721
 AB4721.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4721
 AB4721.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4721
 AB4721.The ellipsoidal height was determined by GPS observations
 AB4721.and is referenced to NAD 83.
 AB4721
 AB4721. The following values were computed from the NAD 83(2011) position.
 AB4721
 AB4721;                    North         East     Units Scale Factor Converg.
 AB4721;SPC MD       -   222,034.054   405,047.908   MT  1.00004512   +0 02 12.9
 AB4721;SPC MD       -   728,456.73  1,328,894.68   sFT  1.00004512   +0 02 12.9
 AB4721;UTM  18      - 4,392,574.966   333,493.367   MT  0.99994134   -1 14 21.8
 AB4721
 AB4721!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4721!SPC MD       -   0.99997087  x   1.00004512  =   1.00001599
 AB4721!UTM  18      -   0.99997087  x   0.99994134  =   0.99991221
 AB4721
 AB4721_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3349392574(NAD 83)
 AB4721
 AB4721                          SUPERSEDED SURVEY CONTROL
 AB4721
 AB4721  NAD 83(2007)-  39 40 00.40839(N)    076 56 28.22843(W) AD(2002.00) 0
 AB4721  ELLIP H (02/10/07)  185.706  (m)                       GP(2002.00)    
 AB4721  ELLIP H (08/30/02)  185.703  (m)                       GP(       ) 4 2
 AB4721  NAD 83(1991)-  39 40 00.40804(N)    076 56 28.22888(W) AD(       ) 1
 AB4721  ELLIP H (07/03/96)  185.639  (m)                       GP(       ) 1 1
 AB4721  NAVD 88 (07/03/96)  218.1    (m)  GEOID93  model used  GPS OBS        
 AB4721
 AB4721.Superseded values are not recommended for survey control.
 AB4721
 AB4721.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4721.See file dsdata.pdf to determine how the superseded data were derived.
 AB4721
 AB4721_MARKER: DD = SURVEY DISK
 AB4721_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4721_STAMPING: CLEM 1995
 AB4721_MARK LOGO: MD-013
 AB4721_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4721_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4721+STABILITY: SURFACE MOTION
 AB4721_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4721+SATELLITE: SATELLITE OBSERVATIONS - August 20, 2008
 AB4721
 AB4721  HISTORY     - Date     Condition        Report By
 AB4721  HISTORY     - 1995     MONUMENTED       MD-013
 AB4721  HISTORY     - 20080324 GOOD             GPSSS
 AB4721  HISTORY     - 20080820 GOOD             MDSHA
 AB4721
 AB4721                          STATION DESCRIPTION
 AB4721
 AB4721'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4721'STATION IS LOCATED ABOUT 7.0 MI (11.3 KM) NORTHEAST OF WESTMINSTER AND
 AB4721'ABOUT 3.0 MI (4.8 KM) WEST OF MANCHESTER. TO REACH STATION FROM THE
 AB4721'INTERSECTION OF MD ROUTE 97 (LITTLESTOWN PIKE) AND MD ROUTE 496
 AB4721'(BACHMANS VALLEY ROAD) GO NORTH ON MD ROUTE 496 FOR 4.2 MI (6.8 KM) TO
 AB4721'THE STATION ON THE RIGHT. STATION IS ALSO 0.1 MI (0.2 KM) SOUTH OF THE
 AB4721'INTERSECTION OF MD ROUTE 496 WITH ECKARD ROAD. STATION MARK IS SET IN
 AB4721'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4721'GROUND. IT IS 38.2 FT (11.6 M) EAST OF THE CENTERLINE OF THE ROAD, 49
 AB4721'FT (14.9 M) SOUTHEAST OF TELEPHONE POLE NO.102, 87 FT (26.5 M)
 AB4721'SOUTHWEST OF AN 8 IN MAPLE TREE, 101.4 FT (30.9 M) SOUTHWEST OF THE
 AB4721'CENTERLINE OF A DRIVEWAY LEADING SOUTHEAST TO HOUSE NO.1525, 30.8 FT
 AB4721'(9.4 M) NORTHEAST OF A 2 IN MAPLE TREE, 45.8 FT (14.0 M) NORTHEAST OF
 AB4721'THE CENTERLINE OF A DRIVEWAY LEADING SOUTHEAST TO HOUSE NO.1519 AND
 AB4721'71.5 FT (21.8 M) SOUTHEAST OF POWER POLE NO.151442.
 AB4721
 AB4721                          STATION RECOVERY (2008)
 AB4721
 AB4721'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (DA)
 AB4721'RECOVERED BY DALE ADAMS OF CLSI, FREDERICK OFFICE.
 AB4721
 AB4721                          STATION RECOVERY (2008)
 AB4721
 AB4721'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 AB4721'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7084 ***********************************************************************
 HV7084  DESIGNATION -  CLEMENT
 HV7084  PID         -  HV7084
 HV7084  STATE/COUNTY-  MD/CHARLES
 HV7084  COUNTRY     -  US
 HV7084  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7084
 HV7084                         *CURRENT SURVEY CONTROL
 HV7084  ______________________________________________________________________
 HV7084* NAD 83(1993) POSITION- 38 17 28.06191(N) 076 55 26.87608(W)   ADJUSTED
 HV7084* NAVD 88 ORTHO HEIGHT -     2.31  (+/-2cm)        7.6   (feet) VERTCON3
 HV7084  ______________________________________________________________________
 HV7084  GEOID HEIGHT    -        -33.605 (meters)                     GEOID18
 HV7084  LAPLACE CORR    -         -2.47  (seconds)                    DEFLEC18
 HV7084  HORZ ORDER      -  SECOND
 HV7084  VERT ORDER      -  THIRD ? (See Below)
 HV7084
 HV7084.The horizontal coordinates were established by classical geodetic methods
 HV7084.and adjusted by the National Geodetic Survey in November 1994.
 HV7084
 HV7084.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7084.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7084
 HV7084.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7084.GEOID18 height accuracy estimate available here.
 HV7084
 HV7084.The vertical order pertains to the NGVD 29 superseded value.
 HV7084
 HV7084.Click photographs - Photos may exist for this station.
 HV7084
 HV7084.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7084
 HV7084. The following values were computed from the NAD 83(1993) position.
 HV7084
 HV7084;                    North         East     Units Scale Factor Converg.
 HV7084;SPC MD       -    69,320.836   406,637.232   MT  1.00000156   +0 02 51.4
 HV7084;SPC MD       -   227,430.11  1,334,108.99   sFT  1.00000156   +0 02 51.4
 HV7084;SPC VA N     - 2,070,497.025 3,637,851.707   MT  0.99996451   +0 59 00.7
 HV7084;SPC VA N     - 6,792,955.66 11,935,185.14   sFT  0.99996451   +0 59 00.7
 HV7084;UTM  18      - 4,239,868.311   331,728.942   MT  0.99994872   -1 11 33.3
 HV7084
 HV7084!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7084!SPC MD       -   1.00000491  x   1.00000156  =   1.00000647
 HV7084!SPC VA N     -   1.00000491  x   0.99996451  =   0.99996942
 HV7084!UTM  18      -   1.00000491  x   0.99994872  =   0.99995363
 HV7084
 HV7084:                Primary Azimuth Mark                     Grid Az
 HV7084:SPC MD       -  CALDWELL                                 119 36 37.5
 HV7084:SPC VA N     -  CALDWELL                                 118 40 28.2
 HV7084:UTM  18      -  CALDWELL                                 120 51 02.2
 HV7084
 HV7084_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3172839868(NAD 83)
 HV7084
 HV7084|---------------------------------------------------------------------|
 HV7084| PID    Reference Object                     Distance      Geod. Az  |
 HV7084|                                                           dddmmss.s |
 HV7084| HV7047 CALDWELL                            APPROX. 7.9 KM 1193928.9 |
 HV7084| HV7101 LOWER CEDAR POINT LIGHTHOUSE        APPROX. 8.1 KM 3115020.2 |
 HV7084|---------------------------------------------------------------------|
 HV7084
 HV7084                          SUPERSEDED SURVEY CONTROL
 HV7084
 HV7084  NAD 83(1991)-  38 17 28.06164(N)    076 55 26.88157(W) AD(       ) 2
 HV7084  NAD 83(1986)-  38 17 28.06205(N)    076 55 26.89130(W) AD(       ) 2
 HV7084  NAD 27      -  38 17 27.60300(N)    076 55 27.99700(W) AD(       ) 2
 HV7084  USSD        -  38 17 28.23100(N)    076 55 28.09500(W) AD(       ) 3
 HV7084  NGVD 29               2.56   (m)            8.4    (f) LEVELING    3  
 HV7084
 HV7084.Superseded values are not recommended for survey control.
 HV7084
 HV7084.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7084.See file dsdata.pdf to determine how the superseded data were derived.
 HV7084
 HV7084_MARKER: DD = SURVEY DISK
 HV7084_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7084_MARK LOGO: USN
 HV7084_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7084+STABILITY: SURFACE MOTION
 HV7084
 HV7084  HISTORY     - Date     Condition        Report By
 HV7084  HISTORY     - 1918     MONUMENTED       USN
 HV7084  HISTORY     - 1924     GOOD             CGS
 HV7084  HISTORY     - 1929     GOOD             CGS
 HV7084  HISTORY     - 1929     GOOD             CGS
 HV7084
 HV7084                          STATION DESCRIPTION
 HV7084
 HV7084'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 HV7084'ON E SIDE OF POTOMAC RIVER, S SIDE OF SWAN POINT, ON LOWER SIDE OF
 HV7084'RIDGE AT INTERSECTION OF LINES OF TELEPHONE POLES.  MARKED BY
 HV7084'ORDNANCE BUREAU MONUMENT FLUSH WITH SURFACE OF GROUND SET IN
 HV7084'CEMENT AND CENTERED WITH BRASS DISK.  OVER THE STATION IS AN IRON
 HV7084'TRIPOD.  REFERENCE MARK IS NAIL IN BLAZE IN TELEPHONE POLE 66.4
 HV7084'FEET N FROM STATION.  IT IS IN LINE WITH LOWER OUTER CORNER OF OLD
 HV7084'FRAME HOUSE SEVERAL HUNDRED FEET IN FROM HIGH-WATER LINE.
 HV7084
 HV7084                          STATION RECOVERY (1929)
 HV7084
 HV7084'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (FLP)
 HV7084'STATION RECOVERED AS DESCRIBED.  A NEW STATION, CUCKOLD, WAS
 HV7084'ESTABLISHED IN THE IMMEDIATE VICINITY.
 HV7084'
 HV7084'A PERMANENT OBSERVATION STATION WITH TELEPHONE AND SHEET METAL
 HV7084'SHELTER FOR OBSERVER OVER THE MARK PREVENTED ITS USE FOR THE 1929
 HV7084'TRIANGULATION.  IT WAS TIED IN TO THE NEW STATION BY A MEASURED
 HV7084'DISTANCE AND DIRECTION.
 HV7084
 HV7084                          STATION RECOVERY (1929)
 HV7084
 HV7084'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (EBL)
 HV7084'ORDNANCE STATION CLEMENT IS LOCATED NEAR STATION CUCKOLD, AND WILL
 HV7084'SERVE IT AS AN ADDITIONAL REFERENCE MARK.  THERE IS AN IRON
 HV7084'TRIPOD, WITH THE LEGS SET IN CONCRETE.  THIS TRIPOD IS EVIDENTLY
 HV7084'MAINTAINED BY THE NAVAL PROVING GROUNDS AT DAHLGREN, AND WILL
 HV7084'PROBABLY STAND FOR A CONSIDERABLE NUMBER OF YEARS AND SHOULD BE OF
 HV7084'CONSIDERABLE AID IN THE RECOVERY OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7102 ***********************************************************************
 HV7102  DESIGNATION -  CLEMENT 4
 HV7102  PID         -  HV7102
 HV7102  STATE/COUNTY-  MD/CHARLES
 HV7102  COUNTRY     -  US
 HV7102  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7102
 HV7102                         *CURRENT SURVEY CONTROL
 HV7102  ______________________________________________________________________
 HV7102* NAD 83(1993) POSITION- 38 17 28.00010(N) 076 55 24.08886(W)   ADJUSTED
 HV7102* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7102  ______________________________________________________________________
 HV7102  GEOID HEIGHT    -        -33.606 (meters)                     GEOID18
 HV7102  LAPLACE CORR    -         -2.45  (seconds)                    DEFLEC18
 HV7102  HORZ ORDER      -  FIRST
 HV7102
 HV7102.The horizontal coordinates were established by classical geodetic methods
 HV7102.and adjusted by the National Geodetic Survey in November 1994.
 HV7102
 HV7102.The orthometric height was scaled from a topographic map.
 HV7102
 HV7102.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7102.GEOID18 height accuracy estimate available here.
 HV7102
 HV7102.Click photographs - Photos may exist for this station.
 HV7102
 HV7102.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7102
 HV7102. The following values were computed from the NAD 83(1993) position.
 HV7102
 HV7102;                    North         East     Units Scale Factor Converg.
 HV7102;SPC MD       -    69,318.987   406,704.966   MT  1.00000156   +0 02 53.2
 HV7102;SPC MD       -   227,424.04  1,334,331.21   sFT  1.00000156   +0 02 53.2
 HV7102;UTM  18      - 4,239,864.996   331,796.617   MT  0.99994844   -1 11 31.6
 HV7102
 HV7102!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7102!SPC MD       -   1.00000516  x   1.00000156  =   1.00000672
 HV7102!UTM  18      -   1.00000516  x   0.99994844  =   0.99995360
 HV7102
 HV7102:                Primary Azimuth Mark                     Grid Az
 HV7102:SPC MD       -  WATER 10                                 133 33 56.4
 HV7102:UTM  18      -  WATER 10                                 134 48 21.2
 HV7102
 HV7102_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3179639864(NAD 83)
 HV7102
 HV7102|---------------------------------------------------------------------|
 HV7102| PID    Reference Object                     Distance      Geod. Az  |
 HV7102|                                                           dddmmss.s |
 HV7102| CX2617 CLEMENT 4 RM 1                       27.310 METERS 06306     |
 HV7102| HV7080 POTOMAC VIEW RM                     APPROX. 1.9 KM 1084420.4 |
 HV7102| HV7081 WATER 10                            APPROX. 0.9 KM 1333649.6 |
 HV7102| CX2618 CLEMENT 4 RM 2                       27.217 METERS 28229     |
 HV7102|---------------------------------------------------------------------|
 HV7102
 HV7102                          SUPERSEDED SURVEY CONTROL
 HV7102
 HV7102  NAD 83(1991)-  38 17 27.99985(N)    076 55 24.09428(W) AD(       ) 1
 HV7102  NAD 83(1986)-  38 17 28.00027(N)    076 55 24.10405(W) AD(       ) 1
 HV7102
 HV7102.Superseded values are not recommended for survey control.
 HV7102
 HV7102.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7102.See file dsdata.pdf to determine how the superseded data were derived.
 HV7102
 HV7102_MARKER: DS = TRIANGULATION STATION DISK
 HV7102_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7102_STAMPING: CLEMENT 4 1950
 HV7102_MARK LOGO: USN
 HV7102_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7102
 HV7102  HISTORY     - Date     Condition        Report By
 HV7102  HISTORY     - 1954     MONUMENTED       USN
 HV7102  HISTORY     - 1959     GOOD             CGS
 HV7102  HISTORY     - 1960     GOOD             CGS
 HV7102
 HV7102                          STATION DESCRIPTION
 HV7102
 HV7102'DESCRIBED BY US NAVY 1954 (DAJ)
 HV7102'THE STATION IS LOCATED ABOUT 8-1/2 MILES SOUTHWEST OF THE VILLAGE OF
 HV7102'CLEMENTS, 7 MILES SOUTHWEST OF THE EAST AND OF THE POTOMAC RIVER
 HV7102'TOLL BRIDGE AND IT IS ON THE SOUTH SIDE OF SWAN POINT.  IT IS 39
 HV7102'FEET NORTHEAST OF THE POTOMAC RIVER BANK.  IT IS A BUREAU OF
 HV7102'ORDNANCE DISK SET IN A 6 INCH TILE PIPE.  THE MARK PROJECTS 2
 HV7102'INCHES AND THE DISK IS STAMPED CLEMENT 4 1950.
 HV7102'
 HV7102'REFERENCE MARK NO 1 IS 36 FEET NORTHEAST OF THE SHORELINE.  THE
 HV7102'MARK PROJECTS 6 INCHES AND THE DISK IS STAMPED CLEMENT 4 NO 1
 HV7102'1954.
 HV7102'
 HV7102'REFERENCE MARK NO 2 IS 6 FEET NORTHEAST OF THE SHORELINE.  THE
 HV7102'MARK PROJECTS 6 INCHES AND THE DISK IS STAMPED CLEMENT 4 NO 2
 HV7102'1954.
 HV7102'
 HV7102'BUREAU OF ORDNANCE (AZIMUTH MARK) IT IS 23 FEET NORTHEAST OF THE
 HV7102'SHORELINE AND A THREE LEGGED METAL TARGET IS CONSTRUCTED OVER
 HV7102'THE MARK.  THE MARK IS A STANDARD BUREAU OF ORDNANCE DISK SET IN
 HV7102'A 4 X 4 INCH SQUARE CONCRETE POST WHICH IS FLUSH WITH THE
 HV7102'SURFACE OF THE GROUND.  THE DISK IS NOT STAMPED.
 HV7102'
 HV7102'TO REACH FROM THE EAST END OF THE POTOMAC RIVER TOLL BRIDGE, GO
 HV7102'EASTERLY ON U.S. HIGHWAY 301 FOR 1.8 MILES TO THE JUNCTION OF
 HV7102'U.S. HIGHWAY 301 AND STATE HIGHWAY 3, TURN RIGHT ON STATE HIGHWAY 3
 HV7102'FOR 1.6 MILES TO THE JUNCTION OF 229, CONTINUE ON STATE HIGHWAY
 HV7102'3 FOR 4.65 MILES TO MARTIN STORE ON THE LEFT, TURN RIGHT FOR 0.4
 HV7102'MILE TO A SIDE ROAD LEFT, CONTINUE STRAIGHT AHEAD FOR 0.4 MILE
 HV7102'TO A SIDE ROAD LEFT, CONTINUE STRAIGHT AHEAD FOR 0.6 MILE TO A
 HV7102'GATE WHICH IS LOCKED, (RANGE DIVISION HAS KEY TO GATE)
 HV7102'CONTINUE THROUGH GATE ON A TRACK ROAD FOR 1.25 MILES,
 HV7102'TURN LEFT ON A TRACK ROAD FOR 0.3 MILE, TURN RIGHT AND FOLLOW
 HV7102'THE RIVER BANK FOR 0.45 MILE TO A TRACK LEFT.  HERE CONTINUE
 HV7102'STRAIGHT AHEAD FOR 0.2 MILE TO THE STATION ON THE BANK OF
 HV7102'THE POTOMAC RIVER.
 HV7102'
 HV7102'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTHWEST FOR 0.2
 HV7102'MILE TO A SIDE ROAD RIGHT, CONTINUE STRAIGHT AHEAD FOR 0.45 MILE,
 HV7102'TURN LEFT FOR 0.3 MILE, TURN RIGHT FOR 1.25 MILE TO THE GATE,
 HV7102'CONTINUE THROUGH THE GATE FOR 0.2 MILE, TURN RIGHT AND FOLLOW A
 HV7102'TRACK ROAD FOR 0.4 MILE TO THE MARK ON THE BANK OF THE RIVER.
 HV7102'
 HV7102'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV7102
 HV7102                          STATION RECOVERY (1959)
 HV7102
 HV7102'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV7102'STATION AND BOTH R.M.S RECOVERED IN GOOD CONDITION AS DESCRIBED.
 HV7102'ORIGINAL DESCRIPTION IS ADEQUATE WITH THE ADDITION THAT A STEEL
 HV7102'PIPE TRIPOD, PAINTED WHITE, NOW EXISTS OVER THE STATION.  THE
 HV7102'TRIPOD SIGNAL IS ABOUT 20 FEET HIGH AND IS USED BY THE NAVAL
 HV7102'PROVING GROUND AT DAHLGREN.
 HV7102'
 HV7102'DISTANCES AND DIRECTIONS TO THE R.M.S WERE NOT CHECKED DUE TO
 HV7102'THE GREAT AMOUNT OF CLEARING THAT WOULD BE REQUIRED.
 HV7102
 HV7102                          STATION RECOVERY (1960)
 HV7102
 HV7102'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV7102'STATION MARK, REFERENCE MARK AND AZIMUTH MARK RECOVERED IN GOOD
 HV7102'CONDITION.  REFERENCE MARK NO. 2 WAS FOUND DESTROYED.
 HV7102'
 HV7102'THE PUBLISHED DESCRIPTION IS ADEQUATE WITH THE FOLLOWING EXCEPTIONS
 HV7102'AND ADDITIONS--
 HV7102'
 HV7102'STATION IS 30 FT. N.N.W. OF M.H.W.L. AND 12 FT. N. OF A 6 INCH
 HV7102'CHERRY TREE.
 HV7102'
 HV7102'THE AZIMUTH MARK IS A STANDARD BUREAU OF ORDINANCE DISK SET IN
 HV7102'A 6 INCH ROUND TILE ABOUT 2 INCHES BELOW THE SURFACE.  THE STEEL
 HV7102'TRIPOD OVER THE MARK IS IN GOOD CONDITION.  THIS MARK IS ALSO
 HV7102'THE REFERENCE MARK FOR STATION POTOMAC VIEW 1918.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8025 ***********************************************************************
 AJ8025  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8025  DESIGNATION -  CLEWIS
 AJ8025  PID         -  AJ8025
 AJ8025  STATE/COUNTY-  MD/FREDERICK
 AJ8025  COUNTRY     -  US
 AJ8025  USGS QUAD   -  URBANA (2016)
 AJ8025
 AJ8025                         *CURRENT SURVEY CONTROL
 AJ8025  ______________________________________________________________________
 AJ8025* NAD 83(2011) POSITION- 39 17 34.38462(N) 077 18 53.39935(W)   ADJUSTED
 AJ8025* NAD 83(2011) ELLIP HT-   146.096 (meters)        (06/27/12)   ADJUSTED
 AJ8025* NAD 83(2011) EPOCH   -  2010.00
 AJ8025* NAVD 88 ORTHO HEIGHT -   178.221 (meters)      584.71  (feet) ADJUSTED
 AJ8025  ______________________________________________________________________
 AJ8025  GEOID HEIGHT    -        -32.138 (meters)                     GEOID18
 AJ8025  NAD 83(2011) X  -  1,085,432.321 (meters)                     COMP
 AJ8025  NAD 83(2011) Y  - -4,822,263.752 (meters)                     COMP
 AJ8025  NAD 83(2011) Z  -  4,017,626.457 (meters)                     COMP
 AJ8025  LAPLACE CORR    -          6.05  (seconds)                    DEFLEC18
 AJ8025  DYNAMIC HEIGHT  -        178.126 (meters)      584.40  (feet) COMP
 AJ8025  MODELED GRAVITY -    980,088.5   (mgal)                       NAVD 88
 AJ8025
 AJ8025  VERT ORDER      -  SECOND    CLASS I
 AJ8025
 AJ8025  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8025  Standards:
 AJ8025         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8025            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8025  -------------------------------------------------------------------
 AJ8025  NETWORK    0.41   1.00           0.18   0.15   0.51     -0.04292976
 AJ8025  -------------------------------------------------------------------
 AJ8025  Click here for local accuracies and other accuracy information.
 AJ8025
 AJ8025.The horizontal coordinates were established by GPS observations
 AJ8025.and adjusted by the National Geodetic Survey in June 2012.
 AJ8025
 AJ8025.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8025.been affixed to the stable North American tectonic plate. See 
 AJ8025.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8025
 AJ8025.The horizontal coordinates are valid at the epoch date displayed above
 AJ8025.which is a decimal equivalence of Year/Month/Day.
 AJ8025
 AJ8025.The orthometric height was determined by differential leveling and
 AJ8025.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8025.in November 2003.
 AJ8025
 AJ8025.No vertical observational check was made to the station.
 AJ8025
 AJ8025.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8025.GEOID18 height accuracy estimate available here.
 AJ8025
 AJ8025.Click photographs - Photos may exist for this station.
 AJ8025
 AJ8025.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8025
 AJ8025.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8025
 AJ8025.The ellipsoidal height was determined by GPS observations
 AJ8025.and is referenced to NAD 83.
 AJ8025
 AJ8025.The dynamic height is computed by dividing the NAVD 88
 AJ8025.geopotential number by the normal gravity value computed on the
 AJ8025.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8025.degrees latitude (g = 980.6199 gals.).
 AJ8025
 AJ8025.The modeled gravity was interpolated from observed gravity values.
 AJ8025
 AJ8025. The following values were computed from the NAD 83(2011) position.
 AJ8025
 AJ8025;                    North         East     Units Scale Factor Converg.
 AJ8025;SPC MD       -   180,567.353   372,840.628   MT  0.99997629   -0 11 51.4
 AJ8025;SPC MD       -   592,411.39  1,223,227.96   sFT  0.99997629   -0 11 51.4
 AJ8025;UTM  18      - 4,351,833.688   300,372.668   MT  1.00009070   -1 27 59.2
 AJ8025
 AJ8025!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8025!SPC MD       -   0.99997708  x   0.99997629  =   0.99995337
 AJ8025!UTM  18      -   0.99997708  x   1.00009070  =   1.00006778
 AJ8025
 AJ8025_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0037251833(NAD 83)
 AJ8025
 AJ8025                          SUPERSEDED SURVEY CONTROL
 AJ8025
 AJ8025  NAD 83(2007)-  39 17 34.38482(N)    077 18 53.40005(W) AD(2002.00) 0
 AJ8025  ELLIP H (02/10/07)  146.115  (m)                       GP(2002.00)    
 AJ8025  NAD 83(1991)-  39 17 34.38494(N)    077 18 53.40027(W) AD(       ) A
 AJ8025  ELLIP H (02/12/02)  146.117  (m)                       GP(       ) 4 1
 AJ8025  NAVD 88 (02/12/02)  178.2    (m)  GEOID99  model used  GPS OBS        
 AJ8025
 AJ8025.Superseded values are not recommended for survey control.
 AJ8025
 AJ8025.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8025.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8025
 AJ8025_MARKER: DD = SURVEY DISK
 AJ8025_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8025_STAMPING: CLEWIS 2000
 AJ8025_MARK LOGO: MD-021
 AJ8025_PROJECTION: FLUSH
 AJ8025_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8025_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8025+STABILITY: SURFACE MOTION
 AJ8025_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8025+SATELLITE: SATELLITE OBSERVATIONS - August 08, 2024
 AJ8025
 AJ8025  HISTORY     - Date     Condition        Report By
 AJ8025  HISTORY     - 2000     MONUMENTED       MD-021
 AJ8025  HISTORY     - 20010615 GOOD             MDSHA
 AJ8025  HISTORY     - 20021031 GOOD             POWELL
 AJ8025  HISTORY     - 20050405 GOOD             USPSQD
 AJ8025  HISTORY     - 20090715 GOOD             GPSSS
 AJ8025  HISTORY     - 20130626 GOOD             GPSSS
 AJ8025  HISTORY     - 20170803 GOOD             NGS
 AJ8025  HISTORY     - 20240808 GOOD             MDSHA
 AJ8025
 AJ8025                          STATION DESCRIPTION
 AJ8025
 AJ8025'DESCRIBED BY FREDERICK COUNTY MARYLAND 2000 (JE)
 AJ8025'THE STATION IS LOCATED ABOUT 10.0 MILES (16.1 KM) SOUTHEAST OF
 AJ8025'FREDERICK, 10.1 MILES (16.3 KM) SOUTHWEST OF MOUNT AIRY, AND 1.0 MILES
 AJ8025'(1.6 KM) NORTH OF HYATTSTOWN.  TO REACH THE STATION FROM THE
 AJ8025'INTERSTATE 270 BRIDGE OVER STATE HIGHWAY 109 IN HYATTSTOWN, GO EAST
 AJ8025'ALONG STATE HIGHWAY 109 FOR 0.5 MILES (0.8 KM) TO STATE HIGHWAY 355.
 AJ8025'TURN LEFT AND GO NORTH ALONG STATE HIGHWAY 355 FOR 0.6 TO STATE
 AJ8025'HIGHWAY 75 LEADING NORTHEAST.  CONTINUE NORTH ALONG STATE HIGHWAY 355
 AJ8025'FOR 0.25 MILES (0.40 KM) TO THE TOP OF THE GRADE AND THE STATION ON
 AJ8025'THE LEFT.  THE STATION IS A FREDERICK COUNTY SURVEY DISK SET IN THE
 AJ8025'TOP OF A 10 INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 AJ8025'GROUND.  IT IS 32.0 FEET (9.8 M) WEST OF THE CENTER LINE OF THE ROAD,
 AJ8025'25.5 FEET (7.8 M) SOUTH OF POWER POLE NUMBER 1097, 112.5 NORTHWEST AND
 AJ8025'ACROSS THE ROAD FROM TELEPHONE POLE NUMBER 1231, 142.7 FEET (43.5 M)
 AJ8025'NORTH OF POWER POLE NUMBER 1098, AND 1 FOOT (0.3 M) EAST OF A
 AJ8025'CARSONITE WITNESS POST.
 AJ8025
 AJ8025                          STATION RECOVERY (2001)
 AJ8025
 AJ8025'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ8025'RECOVERED AS DESCRIBED.
 AJ8025
 AJ8025                          STATION RECOVERY (2002)
 AJ8025
 AJ8025'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 AJ8025'RECOVERED IN GOOD CONDITION.
 AJ8025
 AJ8025                          STATION RECOVERY (2005)
 AJ8025
 AJ8025'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 AJ8025'RECOVERED IN GOOD CONDITION.
 AJ8025
 AJ8025                          STATION RECOVERY (2009)
 AJ8025
 AJ8025'RECOVERY NOTE BY GPS SALES AND SERVICES 2009 (MB)
 AJ8025'RECOVERED BY MIKE BUTLER OF NORTHERN BAY SURVEYS
 AJ8025
 AJ8025                          STATION RECOVERY (2013)
 AJ8025
 AJ8025'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 AJ8025'RECOVERED BY MIKE BUTLER AND DEWEY LILLY OF NORTHERN BAY LAND
 AJ8025'PLANNING, ENGINEERING AND SURVEYING CORP.
 AJ8025
 AJ8025                          STATION RECOVERY (2017)
 AJ8025
 AJ8025'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 AJ8025'RECOVERED IN GOOD CONDITION.
 AJ8025
 AJ8025                          STATION RECOVERY (2024)
 AJ8025
 AJ8025'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 AJ8025'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6386 ***********************************************************************
 HV6386  DESIGNATION -  CLIFF
 HV6386  PID         -  HV6386
 HV6386  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6386  COUNTRY     -  US
 HV6386  USGS QUAD   -  ANNAPOLIS (2016)
 HV6386
 HV6386                         *CURRENT SURVEY CONTROL
 HV6386  ______________________________________________________________________
 HV6386* NAD 83(1991) POSITION- 38 59 11.67781(N) 076 28 25.75531(W)   ADJUSTED
 HV6386* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV6386  ______________________________________________________________________
 HV6386  GEOID HEIGHT    -        -33.363 (meters)                     GEOID18
 HV6386  LAPLACE CORR    -         -3.41  (seconds)                    DEFLEC18
 HV6386  HORZ ORDER      -  SECOND
 HV6386
 HV6386.The horizontal coordinates were established by classical geodetic methods
 HV6386.and adjusted by the National Geodetic Survey in January 1992.
 HV6386
 HV6386.The orthometric height was scaled from a topographic map.
 HV6386
 HV6386.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6386.GEOID18 height accuracy estimate available here.
 HV6386
 HV6386.Click photographs - Photos may exist for this station.
 HV6386
 HV6386.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6386
 HV6386. The following values were computed from the NAD 83(1991) position.
 HV6386
 HV6386;                    North         East     Units Scale Factor Converg.
 HV6386;SPC MD       -   146,647.520   445,587.159   MT  0.99995171   +0 19 48.9
 HV6386;SPC MD       -   481,126.07  1,461,897.20   sFT  0.99995171   +0 19 48.9
 HV6386;UTM  18      - 4,316,320.050   372,352.187   MT  0.99980064   -0 55 38.5
 HV6386
 HV6386!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6386!SPC MD       -   1.00000433  x   0.99995171  =   0.99995604
 HV6386!UTM  18      -   1.00000433  x   0.99980064  =   0.99980497
 HV6386
 HV6386:                Primary Azimuth Mark                     Grid Az
 HV6386:SPC MD       -  HORN                                     181 53 48.3
 HV6386:UTM  18      -  HORN                                     183 09 15.7
 HV6386
 HV6386_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7235216320(NAD 83)
 HV6386
 HV6386|---------------------------------------------------------------------|
 HV6386| PID    Reference Object                     Distance      Geod. Az  |
 HV6386|                                                           dddmmss.s |
 HV6386| CX2619 CLIFF RM 1                           34.602 METERS 00957     |
 HV6386| CX2620 CLIFF RM 2                           26.465 METERS 06911     |
 HV6386| HV6335 HORN                                APPROX. 1.6 KM 1821337.2 |
 HV6386| HV6377 BANCROFT HALL NORTH CUPOLA          APPROX. 0.9 KM 2380223.0 |
 HV6386| HV7176 ANNAPOLIS STANDPIPE                 APPROX. 2.7 KM 2505038.7 |
 HV6386| HV6343 ANNAPOLIS ACAD GRAD SCH ROOF        APPROX. 2.0 KM 2752517.2 |
 HV6386| HV6400 BLUFF RM                             35.102 METERS 28054     |
 HV6386|---------------------------------------------------------------------|
 HV6386
 HV6386                          SUPERSEDED SURVEY CONTROL
 HV6386
 HV6386  NAD 83(1986)-  38 59 11.67395(N)    076 28 25.76666(W) AD(       ) 2
 HV6386  NAD 27      -  38 59 11.27200(N)    076 28 26.90900(W) AD(       ) 2
 HV6386
 HV6386.Superseded values are not recommended for survey control.
 HV6386
 HV6386.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6386.See file dsdata.pdf to determine how the superseded data were derived.
 HV6386
 HV6386_MARKER: DS = TRIANGULATION STATION DISK
 HV6386_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6386_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6386
 HV6386  HISTORY     - Date     Condition        Report By
 HV6386  HISTORY     - 1932     MONUMENTED       CGS
 HV6386  HISTORY     - 1945     GOOD             LOCENG
 HV6386  HISTORY     - 1946     GOOD             LOCENG
 HV6386  HISTORY     - 1951     SEE DESCRIPTION  CGS
 HV6386  HISTORY     - 1953     MARK NOT FOUND   USN
 HV6386  HISTORY     - 1954     MARK NOT FOUND   CGS
 HV6386  HISTORY     - 1954     MARK NOT FOUND   CGS
 HV6386  HISTORY     - 1956     MARK NOT FOUND   CGS
 HV6386  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV6386
 HV6386                          STATION DESCRIPTION
 HV6386
 HV6386'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6386'STATION ON HIGH BLUFF DIRECTLY ACROSS THE SEVERN RIVER FROM THE
 HV6386'NAVAL ACADEMY AND 1/4 MILE W OF THE NAVAL EXPERIMENTAL
 HV6386'STATION.  STATION IS 3 METERS BACK FROM EDGE OF CLIFF AND ABOUT 10
 HV6386'METERS UP THE RIVER FROM THE HIGHEST POINT OF BLUFF.  THE BLUFF IS
 HV6386'CAVING DUE TO THE ACTION OF THE WEATHER BUT THE STATION COULD NOT
 HV6386'BE LOCATED FURTHER BACK FROM THE EDGE ON ACCOUNT OF OBSTRUCTION
 HV6386'OF THE DWELLING ON THE LIGHTHOUSE RESERVATION.
 HV6386'
 HV6386'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6386'CONCRETE, IN THE TOP OF TILE.
 HV6386'
 HV6386'REFERENCE MARK NO.1 IS 4 FEET SE OF LARGE TREE 3 FEET IN DIAMETER.
 HV6386'
 HV6386'STATION MARK AND REFERENCE MARKS EXTEND 1 INCH ABOVE SURFACE OF
 HV6386'GROUND.
 HV6386
 HV6386                          STATION RECOVERY (1945)
 HV6386
 HV6386'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1945 (BEB)
 HV6386'RECOVERED BY JE GREINER C.
 HV6386'
 HV6386'STATION AND REFERENCE MARKS RECOVERED AS DESCRIBED, EXCEPT THAT
 HV6386'THE MARYLAND SHELL FISH SURVEY MONUMENT WAS FOUND AT THE FOOT OF
 HV6386'THE ERODED SLOPE.  BANK IS WASHING AWAY SLOWLY.  TWO NEW MONUMENTS
 HV6386'WERE SET ON LINE ST. MARYS SPIRE - CLIFF 1932 PRODUCED NE.  ONE, A
 HV6386'SEVERN RIVER NAVAL COMMAND MONUMENT STAMPED MARY 1945 IS 65.32
 HV6386'FEET FROM CLIFF 1932.  ANOTHER, A U.S.N.A. MONUMENT STAMPED
 HV6386'CLIFTON 1945 IS DISTANT 304.94 FEET FROM CLIFF 1932.  MARYLAND
 HV6386'GRID BEARING OF PRODUCED LINE IS N. 43 DEG 16 MIN 32 SEC E.
 HV6386
 HV6386                          STATION RECOVERY (1946)
 HV6386
 HV6386'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1946 (BEB)
 HV6386'RECOVERED BY JE GREINER C.
 HV6386'
 HV6386'LETTER FROM MR. B.E. BEAVIN, PROJECT ENGINEER, J.E. GREINER
 HV6386'COMPANY, BALTIMORE, MARYLAND, DATED JULY 25, 1946--
 HV6386'
 HV6386'IN CONNECTION WITH THE TOPOGRAPHIC AND CONTROL SURVEYS WHICH WE
 HV6386'ARE MAKING FOR THE UNITED STATES NAVAL ACADEMY AND AT THE REQUEST
 HV6386'OF THE UNITED STATES NAVY, WE HAVE INSTALLED A PERMANENT STEEL
 HV6386'SIGNAL OVER THE TRIANGULATION STATION.  THE TRIPOD IS CONSTRUCTED
 HV6386'SO AS NOT TO INTERFERE WITH AN INSTRUMENT SET OVER THE STATION.
 HV6386
 HV6386                          STATION RECOVERY (1951)
 HV6386
 HV6386'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951 (EJP)
 HV6386'STATION WAS RECOVERED AS DESCRIBED.  REFERENCE MARKS WERE NOT
 HV6386'SEARCHED FOR.
 HV6386'
 HV6386'BLUFF ON WHICH STATION IS LOCATED IS TO BE CUT DOWN ABOUT 20 OR
 HV6386'30 FEET.  PRESENT PLANS CALL FOR REGRADING AN AREA OF ABOUT 10
 HV6386'ACRES BEHIND THE MARK.  NO SATISFACTORY METHOD OF
 HV6386'RELOCATION.  STATION AND REFERENCE MARKS ARE TO BE DESTROYED.
 HV6386
 HV6386                          STATION RECOVERY (1953)
 HV6386
 HV6386'RECOVERY NOTE BY US NAVY 1953
 HV6386'LETTERS OF CAPT. R.N. ERNEST, CEC, USN, PUBLIC WORKS OFFICER,
 HV6386'U.S. NAVAL ACADEMY, ANNAPOLIS, MD., DATED 12 FEB 53 AND 24 FEB 53--
 HV6386'
 HV6386'REFERENCE MARK NO. 1 WAS FOUND DESTROYED DURING A SURVEY AT THE
 HV6386'EXPERIMENT STATION.
 HV6386'
 HV6386'REFERENCE MARK DISK STAMPED CLIFF NO. 1 1932 RECEIVED AT THIS
 HV6386'OFFICE 2/26/53.
 HV6386
 HV6386                          STATION RECOVERY (1954)
 HV6386
 HV6386'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 HV6386'STATION AND REFERENCE MARKS WERE SEARCHED FOR BUT NOT
 HV6386'FOUND.  CONSIDERABLE GRADING HAS BEEN DONE IN THE AREA.  STATION
 HV6386'IS BELIEVED TO BE LOST.
 HV6386
 HV6386                          STATION RECOVERY (1954)
 HV6386
 HV6386'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (IWS)
 HV6386'THE STATION WAS DESTROYED ABOUT TWO YEARS AGO WHEN THE AREA WAS
 HV6386'CLEARED FOR USE AS A STORAGE LOT BY THE NAVY ENGINEERING
 HV6386'EXPERIMENTAL STATION.  ALSO DESTROYED IN THE OPERATION WERE
 HV6386'STATIONS MARY 1945 (SEVERN RIVER NAVAL COMMAND) AND CLIFTON 1945
 HV6386'(U.S.N.A.)
 HV6386'
 HV6386'A NEW STATION WAS ESTABLISHED BY THE NAVY ON THE SAME
 HV6386'BLUFF.  INFORMATION CONCERNING THIS MARK CAN BE OBTAINED FROM THE
 HV6386'PUBLIC WORKS OFFICER AT THE NAVY ENGINEERING EXPERIMENTAL STATION.
 HV6386
 HV6386                          STATION RECOVERY (1956)
 HV6386
 HV6386'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (ELJ)
 HV6386'A SEARCH WAS MADE FOR THIS STATION WITH ENGINEERING EMPLOYEES OF
 HV6386'THE PUBLIC WORKS DEPARTMENT OF THE NAVAL ENGINEERING EXPERIMENT
 HV6386'STATION WHO OCCUPIED THE STATION IN FORMER YEARS AND WERE FAMILIAR
 HV6386'WITH THE GRADING OPERATIONS AT THE STATION SITE.  THE STATION AND
 HV6386'ANY OF THE REFERENCES DESCRIBED IN 1932 WERE NOT FOUND.  THE
 HV6386'POSITION OF CLIFF WAS PLOTTED ON AN ACCURATE LARGE SCALE 1955
 HV6386'TOPOGRAPHIC MAP OF THE NAVAL AREA.  BY REFERENCE TO BUILDINGS
 HV6386'ON TOP OF THIS HILL AND SHOWN ON THE TOPOGRAPHIC MAP TAPED
 HV6386'DISTANCES WERE LAID OFF ON THE GROUND TO THE STATION SITE.  THE
 HV6386'ORIGINALLY DESCRIBED BLUFF HAS BEEN GRADED TO PREVENT FURTHER
 HV6386'EROSION, AND WAS TERRACED.  THE BROW OF THE HILL UPON WHICH
 HV6386'THE STATION WAS LOCATED HAS NOW BEEN GRADED BACK FROM THE
 HV6386'SHORELINE 108 FT. FROM THE STATION SITE.  THE STATION SITE NOW
 HV6386'FALLS WITHIN 26 FT. OF THE EDGE OF A 60-FT. LOWER TERRACE.  THE
 HV6386'REFERENCE MONUMENTS MARY, 1945 AND CLIFTON, 1945, SET AND
 HV6386'DESCRIBED IN THE 1945 RECOVERY NOTE SUBMITTED BY B.E. BEAVIN
 HV6386'(J.E. GREINER COMPANY) WERE SEARCHED FOR BUT NOT FOUND.  THE
 HV6386'STATION SITE FOR MARY, 1945, FALLS IN THE AREA GRADED OFF FROM
 HV6386'THE BLUFF.  CLIFTON, 1945 STATION SITE FALLS IN AN UNIMPROVED
 HV6386'ROADWAY AND PARKING LOT FOR HEAVY TRUCKS, AND IS BELIEVED TO
 HV6386'HAVE BEEN DESTROYED.  IT IS RECOMMENDED THAT STATION CLIFF,
 HV6386'1932, BE CLASSIFIED AS DESTROYED.
 HV6386
 HV6386                          STATION RECOVERY (2003)
 HV6386
 HV6386'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6386'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0957 ***********************************************************************
 HV0957  DESIGNATION -  CLIFF AZ MK
 HV0957  PID         -  HV0957
 HV0957  STATE/COUNTY-  MD/CALVERT
 HV0957  COUNTRY     -  US
 HV0957  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0957
 HV0957                         *CURRENT SURVEY CONTROL
 HV0957  ______________________________________________________________________
 HV0957* NAD 83(1986) POSITION- 38 30 03.     (N) 076 31 51.     (W)   SCALED
 HV0957* NAVD 88 ORTHO HEIGHT -    46.201 (meters)      151.58  (feet) ADJUSTED
 HV0957  ______________________________________________________________________
 HV0957  GEOID HEIGHT    -        -34.053 (meters)                     GEOID18
 HV0957  DYNAMIC HEIGHT  -         46.172 (meters)      151.48  (feet) COMP
 HV0957  MODELED GRAVITY -    980,019.2   (mgal)                       NAVD 88
 HV0957
 HV0957  VERT ORDER      -  FIRST     CLASS II
 HV0957
 HV0957.The horizontal coordinates were scaled from a map and have
 HV0957.an estimated accuracy of +/- 6 seconds.
 HV0957
 HV0957.The orthometric height was determined by differential leveling and
 HV0957.adjusted by the NATIONAL GEODETIC SURVEY
 HV0957.in June 1991.
 HV0957
 HV0957.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0957.GEOID18 height accuracy estimate available here.
 HV0957
 HV0957.Click photographs - Photos may exist for this station.
 HV0957
 HV0957.The dynamic height is computed by dividing the NAVD 88
 HV0957.geopotential number by the normal gravity value computed on the
 HV0957.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0957.degrees latitude (g = 980.6199 gals.).
 HV0957
 HV0957.The modeled gravity was interpolated from observed gravity values.
 HV0957
 HV0957;                    North         East    Units  Estimated Accuracy
 HV0957;SPC MD       -    92,700.      440,930.      MT  (+/- 180 meters Scaled)
 HV0957
 HV0957_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH665624(NAD 83)
 HV0957
 HV0957                          SUPERSEDED SURVEY CONTROL
 HV0957
 HV0957  NGVD 29 (11/26/84)   46.444  (m)          152.38   (f) ADJUSTED    1 2
 HV0957
 HV0957.Superseded values are not recommended for survey control.
 HV0957
 HV0957.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0957.See file dsdata.pdf to determine how the superseded data were derived.
 HV0957
 HV0957_MARKER: DD = SURVEY DISK
 HV0957_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0957_SP_SET: CULVERT
 HV0957_STAMPING: CLIFF AZ 1963
 HV0957_MARK LOGO: MDBCSM
 HV0957_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0957
 HV0957  HISTORY     - Date     Condition        Report By
 HV0957  HISTORY     - 1963     MONUMENTED       MDBCSM
 HV0957  HISTORY     - 1971     GOOD             NGS
 HV0957
 HV0957                          STATION DESCRIPTION
 HV0957
 HV0957'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0957'2.4 MI NW FROM ST LEONARD.
 HV0957'ABOUT 2.4 MILES NORTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE POST
 HV0957'OFFICE AT ST. LEONARD, AT THE JUNCTION OF THE HIGHWAY AND
 HV0957'PARKER CREEK ROAD, SET IN THE TOP OF THE WEST END OF THE NORTH
 HV0957'CONCRETE HEADWALL FOR A TUBLAR CULVERT UNDER THE HIGHWAY, 42
 HV0957'FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 66 FEET EAST OF
 HV0957'THE CENTER LINE OF THE ROAD, 90 FEET SOUTH OF THE SOUTHWEST
 HV0957'CORNER OF THE CONCRETE PORCH FOR A 2 STORY FRAME HOUSE, AND ABOUT
 HV0957'5 FEET BELOW THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7600 ***********************************************************************
 HV7600  DESIGNATION -  CLINTON WSSC TANK
 HV7600  PID         -  HV7600
 HV7600  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7600  COUNTRY     -  US
 HV7600  USGS QUAD   -  ANACOSTIA (2016)
 HV7600
 HV7600                         *CURRENT SURVEY CONTROL
 HV7600  ______________________________________________________________________
 HV7600* NAD 83(1993) POSITION- 38 45 58.23937(N) 076 54 08.90773(W)   ADJUSTED
 HV7600  ______________________________________________________________________
 HV7600  GEOID HEIGHT    -        -32.563 (meters)                     GEOID18
 HV7600  LAPLACE CORR    -         -4.86  (seconds)                    DEFLEC18
 HV7600  HORZ ORDER      -  THIRD
 HV7600
 HV7600.The horizontal coordinates were established by classical geodetic methods
 HV7600.and adjusted by the National Geodetic Survey in November 1994.
 HV7600
 HV7600.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7600.GEOID18 height accuracy estimate available here.
 HV7600
 HV7600.Click photographs - Photos may exist for this station.
 HV7600
 HV7600.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7600
 HV7600. The following values were computed from the NAD 83(1993) position.
 HV7600
 HV7600;                    North         East     Units Scale Factor Converg.
 HV7600;SPC MD       -   122,054.634   408,475.619   MT  0.99995167   +0 03 40.4
 HV7600;SPC MD       -   400,440.91  1,340,140.43   sFT  0.99995167   +0 03 40.4
 HV7600;UTM  18      - 4,292,548.145   334,713.953   MT  0.99993642   -1 11 29.4
 HV7600
 HV7600_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3471392548(NAD 83)
 HV7600
 HV7600                          SUPERSEDED SURVEY CONTROL
 HV7600
 HV7600  NAD 83(1991)-  38 45 58.23873(N)    076 54 08.90799(W) AD(       ) 3
 HV7600  NAD 83(1986)-  38 45 58.23735(N)    076 54 08.92151(W) AD(       ) 3
 HV7600  NAD 27      -  38 45 57.82543(N)    076 54 10.01775(W) AD(       ) 3
 HV7600
 HV7600.Superseded values are not recommended for survey control.
 HV7600
 HV7600.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7600.See file dsdata.pdf to determine how the superseded data were derived.
 HV7600
 HV7600_MARKER: 53 = ELEVATED TANK
 HV7600
 HV7600  HISTORY     - Date     Condition        Report By
 HV7600  HISTORY     - 1970     FIRST OBSERVED   WSSC
 HV7600
 HV7600                          STATION DESCRIPTION
 HV7600
 HV7600'DESCRIBED BY WASH SUBURB SAN COMM 1970 (JBJ)
 HV7600'THE STATION IS CENTER OF THE LIGHT ON TOP OF THE CLINTON WASHINGTON
 HV7600'SUBURBAN SANITATION COMMISSION TANK.  IT IS A 151 FEET TALL, RADIAL
 HV7600'CONE, ELEVATED STEEL WATER TANK.
 HV7600'
 HV7600'THE STATION IS LOCATED 0.15 MILE NORTHWEST OF THE POST OFFICE
 HV7600'IN CLINTON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2202 ***********************************************************************
 JV2202  DESIGNATION -  CLOPPER BRIDGE BORR
 JV2202  PID         -  JV2202
 JV2202  STATE/COUNTY-  MD/MONTGOMERY
 JV2202  COUNTRY     -  US
 JV2202  USGS QUAD   -  GAITHERSBURG (2016)
 JV2202
 JV2202                         *CURRENT SURVEY CONTROL
 JV2202  ______________________________________________________________________
 JV2202* NAD 83(1986) POSITION- 39 09 16.     (N) 077 14 18.     (W)   SCALED
 JV2202* NAVD 88 ORTHO HEIGHT -   119.72  (+/-2cm)      392.8   (feet) VERTCON3
 JV2202  ______________________________________________________________________
 JV2202  GEOID HEIGHT    -        -31.780 (meters)                     GEOID18
 JV2202  VERT ORDER      -  ? (See Below)
 JV2202
 JV2202.The horizontal coordinates were scaled from a map and have
 JV2202.an estimated accuracy of +/- 6 seconds.
 JV2202
 JV2202.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2202.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2202
 JV2202.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2202.GEOID18 height accuracy estimate available here.
 JV2202
 JV2202.The vertical order pertains to the NGVD 29 superseded value.
 JV2202
 JV2202.Click photographs - Photos may exist for this station.
 JV2202
 JV2202;                    North         East    Units  Estimated Accuracy
 JV2202;SPC MD       -   165,180.      379,400.      MT  (+/- 180 meters Scaled)
 JV2202
 JV2202_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ065363(NAD 83)
 JV2202
 JV2202                          SUPERSEDED SURVEY CONTROL
 JV2202
 JV2202  NGVD 29 (11/26/84)  119.925  (m)          393.45   (f) ADJUSTED       
 JV2202
 JV2202.Superseded values are not recommended for survey control.
 JV2202
 JV2202.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2202.See file dsdata.pdf to determine how the superseded data were derived.
 JV2202
 JV2202_MARKER: Q = CHISELED SQUARE
 JV2202_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2202_SP_SET: BRIDGE
 JV2202_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2202_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2202+SATELLITE: SATELLITE OBSERVATIONS - July 11, 2010
 JV2202
 JV2202  HISTORY     - Date     Condition        Report By
 JV2202  HISTORY     - UNK      MONUMENTED       BORR
 JV2202  HISTORY     - 1938     GOOD             CGS
 JV2202  HISTORY     - 20031102 MARK NOT FOUND   USPSQD
 JV2202  HISTORY     - 20050718 MARK NOT FOUND   USPSQD
 JV2202  HISTORY     - 20100711 GOOD             GEOCAC
 JV2202
 JV2202                          STATION DESCRIPTION
 JV2202
 JV2202'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2202'AT CLOPPER.
 JV2202'AT COPPER, MONTGOMERY COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JV2202'200 FEET SOUTHEAST OF THE STATION, 120 FEET SOUTHEAST OF THE
 JV2202'PASSENGER PLATFORM, ON THE SOUTHEAST CORNER OF BRIDGE 25-A,
 JV2202'AND 2.5 FEET SOUTHEAST OF BENCH MARK N 34 DESCRIBED ABOVE.
 JV2202'A CHISELED SQUARE.
 JV2202
 JV2202                          STATION RECOVERY (2003)
 JV2202
 JV2202'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV2202'MARK NOT FOUND.
 JV2202
 JV2202                          STATION RECOVERY (2005)
 JV2202
 JV2202'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV2202'MARK NOT FOUND.
 JV2202
 JV2202                          STATION RECOVERY (2010)
 JV2202
 JV2202'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2202'RECOVERED IN GOOD CONDITION. BRIDGE IS OVER GAME PRESERVE RD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5804 ***********************************************************************
 HV5804  DESIGNATION -  CLOSE
 HV5804  PID         -  HV5804
 HV5804  STATE/COUNTY-  MD/QUEEN ANNES
 HV5804  COUNTRY     -  US
 HV5804  USGS QUAD   -  QUEENSTOWN (2016)
 HV5804
 HV5804                         *CURRENT SURVEY CONTROL
 HV5804  ______________________________________________________________________
 HV5804* NAD 83(1991) POSITION- 38 54 12.95063(N) 076 09 47.75898(W)   ADJUSTED
 HV5804* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5804  ______________________________________________________________________
 HV5804  GEOID HEIGHT    -        -34.156 (meters)                     GEOID18
 HV5804  LAPLACE CORR    -         -4.36  (seconds)                    DEFLEC18
 HV5804  HORZ ORDER      -  THIRD
 HV5804
 HV5804.The horizontal coordinates were established by classical geodetic methods
 HV5804.and adjusted by the National Geodetic Survey in January 1992.
 HV5804
 HV5804.The orthometric height was scaled from a topographic map.
 HV5804
 HV5804.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5804.GEOID18 height accuracy estimate available here.
 HV5804
 HV5804.Click photographs - Photos may exist for this station.
 HV5804
 HV5804.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5804
 HV5804. The following values were computed from the NAD 83(1991) position.
 HV5804
 HV5804;                    North         East     Units Scale Factor Converg.
 HV5804;SPC MD       -   137,637.257   472,576.831   MT  0.99994997   +0 31 30.6
 HV5804;SPC MD       -   451,564.90  1,550,445.82   sFT  0.99994997   +0 31 30.6
 HV5804;UTM  18      - 4,306,721.871   399,132.700   MT  0.99972528   -0 43 50.2
 HV5804
 HV5804!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5804!SPC MD       -   1.00000524  x   0.99994997  =   0.99995520
 HV5804!UTM  18      -   1.00000524  x   0.99972528  =   0.99973051
 HV5804
 HV5804:                Primary Azimuth Mark                     Grid Az
 HV5804:SPC MD       -  JUNE RESET                               235 49 40.6
 HV5804:UTM  18      -  JUNE RESET                               237 05 01.4
 HV5804
 HV5804_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9913206721(NAD 83)
 HV5804
 HV5804|---------------------------------------------------------------------|
 HV5804| PID    Reference Object                     Distance      Geod. Az  |
 HV5804|                                                           dddmmss.s |
 HV5804| HV5805 BEE                                 453.986 METERS 0024407.4 |
 HV5804| HV5763 JUNE RESET                          467.995 METERS 2362111.2 |
 HV5804|---------------------------------------------------------------------|
 HV5804
 HV5804                          SUPERSEDED SURVEY CONTROL
 HV5804
 HV5804  NAD 83(1986)-  38 54 12.94598(N)    076 09 47.77203(W) AD(       ) 3
 HV5804  NAD 27      -  38 54 12.52300(N)    076 09 48.94000(W) AD(       ) 3
 HV5804  USSD        -  38 54 12.91900(N)    076 09 48.71300(W) AD(       ) 3
 HV5804
 HV5804.Superseded values are not recommended for survey control.
 HV5804
 HV5804.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5804.See file dsdata.pdf to determine how the superseded data were derived.
 HV5804
 HV5804_MARKER: Z = SEE DESCRIPTION
 HV5804_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5804_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5804+STABILITY: SURFACE MOTION
 HV5804
 HV5804  HISTORY     - Date     Condition        Report By
 HV5804  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5804  HISTORY     - 1939     MARK NOT FOUND   CGS
 HV5804
 HV5804                          STATION DESCRIPTION
 HV5804
 HV5804'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5804'STATION IS ON THE NORTHERN SHORE OF WYE ISLAND, AT SOUTHERN SIDE
 HV5804'OF ENTRANCE TO WYE NARROWS, IN EDGE OF CULTIVATED LAND, ABOUT 12
 HV5804'FEET ABOVE HIGH WATER, 3 YARDS S OF EDGE OF BANK, 5 YARDS WSW OF
 HV5804'TOP OF BANK, 18 YARDS W OF LONE PINE TREE, AND 17 YARDS E OF CUT
 HV5804'IN BANK.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 HV5804'A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV5804'CONCRETE POST 2 FEET LONG, WITH THE TOP PROJECTING ABOUT 4 INCHES.
 HV5804'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV5804'SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH
 HV5804'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT. DISTANCES AND
 HV5804'BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT
 HV5804'PEAK OF CORN HOUSE, 1/2 MILE, S 3 DEG 18 MIN W.  NAIL IN BLAZE IN
 HV5804'36-INCH WALNUT TREE, 56.49 METERS (185.3 FEET), S 57 DEG 9 MIN W.
 HV5804'RIGHT CORNER OF LARGE BRICK HOUSE, 1-1/4 MILES, S 60 DEG 24 MIN W.
 HV5804'NEAR PEAK OF HOUSE, 5/8 MILE, S 87 DEG 8 MIN W.  WINDMILL, 5/8
 HV5804'MILE, N 89 DEG 0 MIN W.  SPINDLE ON BARN CUPOLA, 1-1/3 MILES, N 21
 HV5804'DEG 18 MIN W.  LEFT CORNER OF HOUSE, 3/4 MILE, N 36 DEG 45 MIN E.
 HV5804'NAIL IN BLAZE IN 24-INCH PINE TREE, 18.28 METERS (60.0 FEET), N 80
 HV5804'DEG 9 MIN E.  NAIL IN BLAZE IN 10-INCH BLACK WALNUT TREE, 27.00
 HV5804'METERS (88.6 FEET), S 77 DEG 19 MIN E.  LEFT PEAK OF LARGE
 HV5804'BUILDING, 3/4 MILE, S 57 DEG 4 MIN E.
 HV5804
 HV5804                          STATION RECOVERY (1939)
 HV5804
 HV5804'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV5804'STATION SEARCHED FOR BUT NOT FOUND.  ONE OF THE REFERENCE MARKS
 HV5804'WAS FOUND, A NAIL IN BLAZE IN STUB OF 24-INCH PINE TREE, BUT
 HV5804'DIGGING AT PROPER DISTANCE FROM THERE FAILED TO DISCLOSE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5107 ***********************************************************************
 JV5107  DESIGNATION -  CLOUGH RESET
 JV5107  PID         -  JV5107
 JV5107  STATE/COUNTY-  MD/KENT
 JV5107  COUNTRY     -  US
 JV5107  USGS QUAD   -  ROCK HALL (2016)
 JV5107
 JV5107                         *CURRENT SURVEY CONTROL
 JV5107  ______________________________________________________________________
 JV5107* NAD 83(1991) POSITION- 39 12 06.53076(N) 076 11 26.30983(W)   ADJUSTED
 JV5107* NAVD 88 ORTHO HEIGHT -    23.    (meters)       75.    (feet) SCALED
 JV5107  ______________________________________________________________________
 JV5107  GEOID HEIGHT    -        -33.297 (meters)                     GEOID18
 JV5107  LAPLACE CORR    -         -2.09  (seconds)                    DEFLEC18
 JV5107  HORZ ORDER      -  FIRST
 JV5107
 JV5107.The horizontal coordinates were established by classical geodetic methods
 JV5107.and adjusted by the National Geodetic Survey in January 1992.
 JV5107
 JV5107.The orthometric height was scaled from a topographic map.
 JV5107
 JV5107.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5107.GEOID18 height accuracy estimate available here.
 JV5107
 JV5107.Click photographs - Photos may exist for this station.
 JV5107
 JV5107.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5107
 JV5107. The following values were computed from the NAD 83(1991) position.
 JV5107
 JV5107;                    North         East     Units Scale Factor Converg.
 JV5107;SPC MD       -   170,720.053   469,908.906   MT  0.99996600   +0 30 28.7
 JV5107;SPC MD       -   560,104.04  1,541,692.80   sFT  0.99996600   +0 30 28.7
 JV5107;UTM  18      - 4,339,847.716   397,192.272   MT  0.99973014   -0 45 09.4
 JV5107
 JV5107!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5107!SPC MD       -   1.00000165  x   0.99996600  =   0.99996765
 JV5107!UTM  18      -   1.00000165  x   0.99973014  =   0.99973179
 JV5107
 JV5107:                Primary Azimuth Mark                     Grid Az
 JV5107:SPC MD       -  FAIRLEE ATT RELAY TOWER                  050 18 34.3
 JV5107:UTM  18      -  FAIRLEE ATT RELAY TOWER                  051 34 12.4
 JV5107
 JV5107_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9719239847(NAD 83)
 JV5107
 JV5107|---------------------------------------------------------------------|
 JV5107| PID    Reference Object                     Distance      Geod. Az  |
 JV5107|                                                           dddmmss.s |
 JV5107| CB1090 CLOUGH RM 1 AZIMUTH                                0442408.4 |
 JV5107| JV5108 FAIRLEE ATT RELAY TOWER             APPROX. 1.6 KM 0504903.0 |
 JV5107| CB1091 CLOUGH RM 2                          53.440 METERS 05148     |
 JV5107| CB1092 CLOUGH RM 3                          37.063 METERS 21302     |
 JV5107| JV5383 AIRWAY BEACON 60                    APPROX.22.6 KM 3073654.2 |
 JV5107|---------------------------------------------------------------------|
 JV5107
 JV5107                          SUPERSEDED SURVEY CONTROL
 JV5107
 JV5107  NAD 83(1986)-  39 12 06.52414(N)    076 11 26.31902(W) AD(       ) 1
 JV5107  NAD 27      -  39 12 06.13180(N)    076 11 27.49230(W) AD(       ) 1
 JV5107  USSD        -  39 12 06.49100(N)    076 11 27.33400(W) AD(       ) 3
 JV5107
 JV5107.Superseded values are not recommended for survey control.
 JV5107
 JV5107.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5107.See file dsdata.pdf to determine how the superseded data were derived.
 JV5107
 JV5107
 JV5107  HISTORY     - Date     Condition        Report By
 JV5107  HISTORY     - 1896     MONUMENTED       CGS
 JV5107  HISTORY     - 1933     GOOD             CGS
 JV5107  HISTORY     - 1935     GOOD             CGS
 JV5107  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV5107  HISTORY     - 1957     GOOD             CGS
 JV5107
 JV5107                          STATION DESCRIPTION
 JV5107
 JV5107'DESCRIBED BY COAST AND GEODETIC SURVEY 1896 (FWP)
 JV5107'ABOUT 2 MILES SW OF FAIRLEE, ON THE ROAD TO TOLCHESTER
 JV5107'BEACH.  STATION IS ON THE FARM OF A.A. REINHART, KNOWN AS HULME
 JV5107'FARM, AT THE HIGHEST POINT OF A FIELD.  THERE ARE TWO ROADS
 JV5107'LEADING FROM THIS FARMHOUSE, ONE TO THE CHESTERTOWN ROAD AND
 JV5107'THE OTHER TO THE TOLCHESTER ROAD.  THE STATION IS ABOUT 20 FEET W
 JV5107'OF THE MIDDLE OF THE LATTER FARM ROAD AND ABOUT 350 FEET FROM
 JV5107'THE TOLCHESTER ROAD.  MARKING NOT KNOWN.
 JV5107
 JV5107                          STATION RECOVERY (1933)
 JV5107
 JV5107'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5107'THIS STATION WAS RECOVERED AS ORIGINALLY DESCRIBED AND OCCUPIED
 JV5107'AS A FIRST-ORDER STATION.  A 90-FOOT TOWER WAS USED.
 JV5107'
 JV5107'IT IS ON THE HULME FARM, NOW OWNED BY MR. H.W. HADAWAY.  IT
 JV5107'IS 180 PACES FROM THE CENTER OF HIGHWAY 21 AND 19 FEET NW OF THE
 JV5107'CENTER OF THE LANE FROM HIGHWAY 21 TO THE FARMHOUSE.  IT IS 33.15
 JV5107'FEET W OF NAIL IN TRIANGLE CUT ON TWIN 4-INCH CEDAR, 12.60 FEET N
 JV5107'OF NAIL IN TRIANGLE CUT ON 4-INCH CEDAR, AND 30.00 FEET SW OF
 JV5107'NAIL IN TRIANGLE CUT ON 4-INCH CEDAR, AND 24 FEET NW OF WIRE
 JV5107'FENCE.  THE UNDERGROUND MARK IS A 6- BY 6-INCH MARBLE POST 3
 JV5107'FEET LONG 3 FEET 4 INCHES BELOW GROUND.  THE SURFACE MARK IS AN
 JV5107'IRREGULAR BLOCK OF CONCRETE, ROUGHLY 18 INCHES SQUARE, 1.5 FEET
 JV5107'BELOW GROUND, WITH A STANDARD DISK STAMPED CLOUGH 1933.  REFERENCE
 JV5107'MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE.
 JV5107'
 JV5107'REFERENCE MARK NO.1 THE AZIMUTH MARK, IS IN FENCE LINE ON NW
 JV5107'SIDE OF LANE, 3 (5) PACES SW OF S CORNER OF TRUCK SHED, 14 PACES
 JV5107'WNW OF CORNER OF CHICKEN HOUSE, 6 PACES N OF CENTER OF LANE, AND
 JV5107'ABOUT 50 PACES W OF HOUSE.
 JV5107'
 JV5107'REFERENCE MARK NO.2, PROJECTING 6 INCHES ABOVE GROUND IS 1 FOOT
 JV5107'N OF FENCE LINE, 4 FEET S OF CENTER OF LANE AND 18 PACES ESE OF
 JV5107'TWIN 4-INCH CEDAR.
 JV5107'
 JV5107'REFERENCE MARK NO.3 IS 1 FOOT N OF FENCE LINE, 4 FEET S OF CENTER
 JV5107'OF LANE AND 7 PACES ESE OF 6-INCH CEDAR.
 JV5107'
 JV5107'TO REACH STATION FROM CHESTERTOWN GO W ON HIGHWAY 20, 8.0 MILES
 JV5107'TO INTERSECTION, TURN SHARPLY RIGHT ON HIGHWAY 21 AND GO 0.2
 JV5107'MILE.  TURN RIGHT AND FOLLOW OLD LANE WITH WIRE FENCE ON RIGHT
 JV5107'AND CEDARS ON LEFT 180 PACES FROM CENTER OF HIGHWAY 21.  STATION
 JV5107'IS 5 PACES N OF CENTER OF LANE.
 JV5107
 JV5107                          STATION RECOVERY (1935)
 JV5107
 JV5107'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (JCP)
 JV5107'STATION AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.  THE
 JV5107'RECOVERY DESCRIPTION IS ADEQUATE.
 JV5107'
 JV5107'A 70-FOOT TOWER WAS BUILT OVER THIS STATION.
 JV5107
 JV5107                          STATION RECOVERY (1953)
 JV5107
 JV5107'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JV5107'REFERENCE MARK 3 WAS FOUND, BUT REFERENCE MARKS 1 AND 2 WERE
 JV5107'NOT FOUND.  THE STATION WAS LOOKED FOR BUT NOT DUG FOR, AND THE LAND
 JV5107'IS UNDER CULTIVATION AT THE PRESENT TIME.  THE CEDAR TREES HAVE
 JV5107'BEEN DESTROYED.
 JV5107
 JV5107                          STATION RECOVERY (1957)
 JV5107
 JV5107'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5107'STATION WAS RECOVERED AS DESCRIBED BY R.D.H. IN 1933 AND ALL
 JV5107'MARKS WERE FOUND TO BE IN GOOD CONDITION.  REFERENCE MARK 1
 JV5107'(AZIMUTH MARK) IS BEHIND A BUILDING AND COULD NOT BE TAKEN.  A
 JV5107'SMALL DIFFERENCE WAS FOUND IN THE DISTANCE AND DIRECTION TO
 JV5107'REFERENCE MARKS 2 AND 3.  THE 1933 DESCRIPTION IS ADEQUATE EXCEPT
 JV5107'THE FENCE LINE MENTIONED IN THE DESCRIPTION IS NOW GONE.
 JV5107'
 JV5107'1957 OBSERVATIONS TAKEN FROM A 77-FT. TOWER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0977 ***********************************************************************
 JV0977  DESIGNATION -  CLOVER RM 1
 JV0977  PID         -  JV0977
 JV0977  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0977  COUNTRY     -  US
 JV0977  USGS QUAD   -  RELAY (2016)
 JV0977
 JV0977                         *CURRENT SURVEY CONTROL
 JV0977  ______________________________________________________________________
 JV0977* NAD 83(1986) POSITION- 39 13 03.70   (N) 076 39 28.88   (W)   HD_HELD1
 JV0977* NAVD 88 ORTHO HEIGHT -    36.231 (meters)      118.87  (feet) ADJUSTED
 JV0977  ______________________________________________________________________
 JV0977  GEOID HEIGHT    -        -32.693 (meters)                     GEOID18
 JV0977  DYNAMIC HEIGHT  -         36.212 (meters)      118.81  (feet) COMP
 JV0977  MODELED GRAVITY -    980,098.5   (mgal)                       NAVD 88
 JV0977
 JV0977  VERT ORDER      -  SECOND    CLASS 0
 JV0977
 JV0977.The horizontal coordinates were determined by differentially corrected
 JV0977.hand held GPS observations or other comparable positioning techniques
 JV0977.and have an estimated accuracy of +/- 3 meters.
 JV0977
 JV0977.The orthometric height was determined by differential leveling and
 JV0977.adjusted by the NATIONAL GEODETIC SURVEY
 JV0977.in June 1991.
 JV0977
 JV0977.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0977.GEOID18 height accuracy estimate available here.
 JV0977
 JV0977.Click photographs - Photos may exist for this station.
 JV0977
 JV0977.The dynamic height is computed by dividing the NAVD 88
 JV0977.geopotential number by the normal gravity value computed on the
 JV0977.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0977.degrees latitude (g = 980.6199 gals.).
 JV0977
 JV0977.The modeled gravity was interpolated from observed gravity values.
 JV0977
 JV0977;                    North         East    Units  Estimated Accuracy
 JV0977;SPC MD       -   172,228.4     429,532.3     MT  (+/- 3 meters HH1 GPS) 
 JV0977
 JV0977_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5686542244(NAD 83)
 JV0977
 JV0977                          SUPERSEDED SURVEY CONTROL
 JV0977
 JV0977  NGVD 29 (11/26/84)   36.471  (m)          119.66   (f) ADJUSTED    2 0
 JV0977
 JV0977.Superseded values are not recommended for survey control.
 JV0977
 JV0977.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0977.See file dsdata.pdf to determine how the superseded data were derived.
 JV0977
 JV0977_MARKER: DR = REFERENCE MARK DISK
 JV0977_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0977_STAMPING: CLOVER NO 1 1957
 JV0977_MARK LOGO: CGS
 JV0977_PROJECTION: FLUSH
 JV0977_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0977_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0977+STABILITY: SURFACE MOTION
 JV0977_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0977+SATELLITE: SATELLITE OBSERVATIONS - July 29, 2021
 JV0977
 JV0977  HISTORY     - Date     Condition        Report By
 JV0977  HISTORY     - 1957     MONUMENTED       CGS
 JV0977  HISTORY     - 1960     GOOD             CGS
 JV0977  HISTORY     - 1976     GOOD             USGS
 JV0977  HISTORY     - 20151120 GOOD             MDSHA
 JV0977  HISTORY     - 20210729 GOOD             MD-005
 JV0977
 JV0977                          STATION DESCRIPTION
 JV0977
 JV0977'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0977'1 MI N FROM LINTHICUM.
 JV0977'0.35 MILE NORTHEAST ALONG STATE HIGHWAY 170 FROM THE EPISCOPAL
 JV0977'CHURCH AT LINTHICUM, THENCE ABOUT 0.65 MILE NORTHWEST ALONG
 JV0977'THE BALTIMORE BELTWAY, ABOUT 0.15 MILE SOUTH OF BALTIMORE BELTWAY
 JV0977'OVERPASS OVER THE BALTIMORE - WASHINGTON EXPRESSWAY, 76.2 FEET
 JV0977'WEST-NORTHWEST OF CLOVER DESCRIBED, 80.5 FEET SOUTHWEST OF
 JV0977'R M 2, 87.5 FEET WEST-SOUTHWEST OF THE WEST CURB LINE OF SOUTH
 JV0977'BOUND BELTWAY TRAFFIC, 7.5 FEET NORTHEAST OF THE NORTHEAST CURB OF
 JV0977'EXPRESSWAY APPROACH TO SOUTH BOUND BELTWAY TRAFFIC, ABOUT 1/2 FOOT
 JV0977'ABOVE THE LEVEL OF APPROACH-WAY, AND SET IN TOP OF A CONCRETE
 JV0977'POST FLUSH WITH THE GROUND.
 JV0977
 JV0977                          STATION RECOVERY (1976)
 JV0977
 JV0977'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1976
 JV0977'RECOVERED IN GOOD CONDITION.
 JV0977
 JV0977                          STATION RECOVERY (2015)
 JV0977
 JV0977'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2015 (DCS)
 JV0977'THE MARK IS ABOUT 142 FEET NE OF THE INTERSECTION OF PAVEMENT OF THE
 JV0977'I-695 OUTER LOOP SHOULDER AND THE RAMP FROM THE NORTHBOUND MD 295 (BW
 JV0977'PARKWAY) RAMP TO OUTER LOOP I-695.
 JV0977
 JV0977                          STATION RECOVERY (2021)
 JV0977
 JV0977'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2021 (RAM)
 JV0977'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0978 ***********************************************************************
 JV0978  DESIGNATION -  CLOVER RM 2
 JV0978  PID         -  JV0978
 JV0978  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0978  COUNTRY     -  US
 JV0978  USGS QUAD   -  RELAY (2016)
 JV0978
 JV0978                         *CURRENT SURVEY CONTROL
 JV0978  ______________________________________________________________________
 JV0978* NAD 83(1986) POSITION- 39 13 04.29   (N) 076 39 28.19   (W)   HD_HELD1
 JV0978* NAVD 88 ORTHO HEIGHT -    36.413 (meters)      119.47  (feet) ADJUSTED
 JV0978  ______________________________________________________________________
 JV0978  GEOID HEIGHT    -        -32.693 (meters)                     GEOID18
 JV0978  DYNAMIC HEIGHT  -         36.393 (meters)      119.40  (feet) COMP
 JV0978  MODELED GRAVITY -    980,098.5   (mgal)                       NAVD 88
 JV0978
 JV0978  VERT ORDER      -  SECOND    CLASS 0
 JV0978
 JV0978.The horizontal coordinates were determined by differentially corrected
 JV0978.hand held GPS observations or other comparable positioning techniques
 JV0978.and have an estimated accuracy of +/- 3 meters.
 JV0978
 JV0978.The orthometric height was determined by differential leveling and
 JV0978.adjusted by the NATIONAL GEODETIC SURVEY
 JV0978.in June 1991.
 JV0978
 JV0978.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0978.GEOID18 height accuracy estimate available here.
 JV0978
 JV0978.Click photographs - Photos may exist for this station.
 JV0978
 JV0978.The dynamic height is computed by dividing the NAVD 88
 JV0978.geopotential number by the normal gravity value computed on the
 JV0978.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0978.degrees latitude (g = 980.6199 gals.).
 JV0978
 JV0978.The modeled gravity was interpolated from observed gravity values.
 JV0978
 JV0978;                    North         East    Units  Estimated Accuracy
 JV0978;SPC MD       -   172,246.7     429,548.8     MT  (+/- 3 meters HH1 GPS) 
 JV0978
 JV0978_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5688242262(NAD 83)
 JV0978
 JV0978                          SUPERSEDED SURVEY CONTROL
 JV0978
 JV0978  NGVD 29 (11/26/84)   36.652  (m)          120.25   (f) ADJUSTED    2 0
 JV0978
 JV0978.Superseded values are not recommended for survey control.
 JV0978
 JV0978.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0978.See file dsdata.pdf to determine how the superseded data were derived.
 JV0978
 JV0978_MARKER: DR = REFERENCE MARK DISK
 JV0978_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0978_STAMPING: CLOVER NO 2 1957
 JV0978_MARK LOGO: CGS
 JV0978_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0978+STABILITY: SURFACE MOTION
 JV0978
 JV0978  HISTORY     - Date     Condition        Report By
 JV0978  HISTORY     - 1957     MONUMENTED       CGS
 JV0978  HISTORY     - 1960     GOOD             CGS
 JV0978
 JV0978                          STATION DESCRIPTION
 JV0978
 JV0978'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0978'1 MI N FROM LINTHICUM.
 JV0978'0.35 MILE NORTHEAST ALONG STATE HIGHWAY 170 FROM THE EPISCOPAL
 JV0978'CHURH AT LINTHICUM, THENCE ABOUT 0.65 MILE NORTHWEST ALONG
 JV0978'THE BALTIMORE BELTWAY, ABOUT 0.15 MILE SOUTH OF BALTIMORE BELTWAY
 JV0978'OVERPASS OVER THE BALTIMORE - WASHINGTON EXPRESSWAY, 80.8
 JV0978'FEET NORTH-NORTHWEST OF CLOVER DESCRIBED, 80.5 FEET NORTHEAST
 JV0978'OF R M 1, 6 FEET WEST-SOUTHWEST OF WEST CURB OF SOUTH BOUND
 JV0978'BELTWAY TRAFFIC, 42 FEET SOUTH-SOUTHEAST OF TO MARYLAND 301
 JV0978'AND MARYLAND 3 SIGN, ABOUT LEVEL WITH THE CURB, AND SET IN
 JV0978'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4036 ***********************************************************************
 JV4036  DESIGNATION -  CLOVER RM 4
 JV4036  PID         -  JV4036
 JV4036  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV4036  COUNTRY     -  US
 JV4036  USGS QUAD   -  RELAY (2016)
 JV4036
 JV4036                         *CURRENT SURVEY CONTROL
 JV4036  ______________________________________________________________________
 JV4036* NAD 83(1986) POSITION- 39 13 03.26   (N) 076 39 28.45   (W)   HD_HELD1
 JV4036* NAVD 88 ORTHO HEIGHT -    36.65  (meters)      120.2   (feet) RESET
 JV4036  ______________________________________________________________________
 JV4036  GEOID HEIGHT    -        -32.693 (meters)                     GEOID18
 JV4036  VERT ORDER      -  THIRD
 JV4036
 JV4036.The horizontal coordinates were determined by differentially corrected
 JV4036.hand held GPS observations or other comparable positioning techniques
 JV4036.and have an estimated accuracy of +/- 3 meters.
 JV4036
 JV4036.The orthometric height was computed from unverified reset data.
 JV4036
 JV4036.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4036.GEOID18 height accuracy estimate available here.
 JV4036
 JV4036.Click photographs - Photos may exist for this station.
 JV4036
 JV4036;                    North         East    Units  Estimated Accuracy
 JV4036;SPC MD       -   172,214.9     429,542.7     MT  (+/- 3 meters HH1 GPS) 
 JV4036
 JV4036_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5687542230(NAD 83)
 JV4036
 JV4036                          SUPERSEDED SURVEY CONTROL
 JV4036
 JV4036  NGVD 29 (??/??/??)   36.89   (m)          121.0    (f) RESET       3  
 JV4036
 JV4036.Superseded values are not recommended for survey control.
 JV4036
 JV4036.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4036.See file dsdata.pdf to determine how the superseded data were derived.
 JV4036
 JV4036_MARKER: DR = REFERENCE MARK DISK
 JV4036_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4036_STAMPING: CLOVER 1957 NO 4 1976
 JV4036_MARK LOGO: NGS
 JV4036_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4036+STABILITY: SURFACE MOTION
 JV4036
 JV4036  HISTORY     - Date     Condition        Report By
 JV4036  HISTORY     - 1976     MONUMENTED       NGS
 JV4036
 JV4036                          STATION DESCRIPTION
 JV4036
 JV4036'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976
 JV4036'10 MILES SOUTH FROM BALTIMORE.
 JV4036'THE MARK IS LOCATED IN THE SOUTHEAST PART OF THE INTERSECTION OF
 JV4036'INTERSTATE HIGHWAY 695 AND THE BALTIMORE-WASHINGTON PARKWAY. IT IS IN
 JV4036'THE SOUTHEAST CURB ALONG A ENTRANCE RAMP ONTO THE EAST BOUND LANE OF
 JV4036'INTERSTATE HIGHWAY 695 AND FROM THE NORTH BOUND LANE OF THE BALTIMORE-
 JV4036'WASHINGTON PARKWAY. IT IS STANDARD REFERENCE MARK DISK CEMENTED IN A
 JV4036'DRILL HOLE WHICH IS 0.5 FOOT NORTH OF A GUARD RAIL. 6 FEET SOUTHWEST
 JV4036'OF A CATCH BASIN, 8 FEET SOUTH OF THE CENTER OF THE RAMP AND ABOUT 1/2
 JV4036'FOOT HIGHER THAN THE RAMP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4646 ***********************************************************************
 HV4646  DESIGNATION -  CLUB
 HV4646  PID         -  HV4646
 HV4646  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4646  COUNTRY     -  US
 HV4646  USGS QUAD   -  ALEXANDRIA (2019)
 HV4646
 HV4646                         *CURRENT SURVEY CONTROL
 HV4646  ______________________________________________________________________
 HV4646* NAD 83(1993) POSITION- 38 45 31.79573(N) 077 01 40.08643(W)   ADJUSTED
 HV4646* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV4646  ______________________________________________________________________
 HV4646  GEOID HEIGHT    -        -32.345 (meters)                     GEOID18
 HV4646  LAPLACE CORR    -         -2.69  (seconds)                    DEFLEC18
 HV4646  HORZ ORDER      -  THIRD
 HV4646
 HV4646.The horizontal coordinates were established by classical geodetic methods
 HV4646.and adjusted by the National Geodetic Survey in November 1994.
 HV4646
 HV4646.The orthometric height was scaled from a topographic map.
 HV4646
 HV4646.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4646.GEOID18 height accuracy estimate available here.
 HV4646
 HV4646.Click photographs - Photos may exist for this station.
 HV4646
 HV4646.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4646
 HV4646. The following values were computed from the NAD 83(1993) position.
 HV4646
 HV4646;                    North         East     Units Scale Factor Converg.
 HV4646;SPC MD       -   121,235.088   397,583.593   MT  0.99995192   -0 01 02.8
 HV4646;SPC MD       -   397,752.12  1,304,405.50   sFT  0.99995192   -0 01 02.8
 HV4646;SPC VA N     - 2,122,255.466 3,627,951.331   MT  0.99995142   +0 55 07.8
 HV4646;SPC VA N     - 6,962,766.47 11,902,703.66   sFT  0.99995142   +0 55 07.8
 HV4646;UTM  18      - 4,291,966.881   323,806.536   MT  0.99998229   -1 16 11.3
 HV4646
 HV4646!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4646!SPC MD       -   1.00000480  x   0.99995192  =   0.99995672
 HV4646!SPC VA N     -   1.00000480  x   0.99995142  =   0.99995622
 HV4646!UTM  18      -   1.00000480  x   0.99998229  =   0.99998709
 HV4646
 HV4646:                Primary Azimuth Mark                     Grid Az
 HV4646:SPC MD       -  HOG                                      271 37 21.5
 HV4646:SPC VA N     -  HOG                                      270 41 10.9
 HV4646:UTM  18      -  HOG                                      272 52 30.0
 HV4646
 HV4646_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2380691966(NAD 83)
 HV4646
 HV4646|---------------------------------------------------------------------|
 HV4646| PID    Reference Object                     Distance      Geod. Az  |
 HV4646|                                                           dddmmss.s |
 HV4646| DC6138 CLUB RM                               9.980 METERS 03831     |
 HV4646| HV4688 QUEEN                               APPROX. 0.6 KM 1672436.2 |
 HV4646| HV4586 HOG                                 APPROX. 1.3 KM 2713618.7 |
 HV4646| HV4600 NEW ALEXANDRIA TANK ON HILL         APPROX. 4.3 KM 3123151.7 |
 HV4646| HV4599 NEW ALEXANDRIA GRN ROOF S CHIM      APPROX. 4.2 KM 3133955.6 |
 HV4646| HV4561 BLACK SQUARE TK NW ALEXANDRIA       APPROX. 8.5 KM 3324432.9 |
 HV4646| HV4548 ALEXANDRIA ST MARYS RC CH           APPROX. 5.0 KM 3433107.2 |
 HV4646| HV4689 RIVERSIDE GOLF CLUB DOCK FP         182.626 METERS 34505     |
 HV4646|---------------------------------------------------------------------|
 HV4646
 HV4646                          SUPERSEDED SURVEY CONTROL
 HV4646
 HV4646  NAD 83(1991)-  38 45 31.79390(N)    077 01 40.08806(W) AD(       ) 3
 HV4646  NAD 83(1986)-  38 45 31.79443(N)    077 01 40.10082(W) AD(       ) 3
 HV4646  NAD 27      -  38 45 31.37100(N)    077 01 41.19000(W) AD(       ) 3
 HV4646
 HV4646.Superseded values are not recommended for survey control.
 HV4646
 HV4646.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4646.See file dsdata.pdf to determine how the superseded data were derived.
 HV4646
 HV4646_MARKER: DS = TRIANGULATION STATION DISK
 HV4646_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4646_STAMPING: CLUB 1928
 HV4646_MARK LOGO: CGS
 HV4646_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4646+STABILITY: SURFACE MOTION
 HV4646
 HV4646  HISTORY     - Date     Condition        Report By
 HV4646  HISTORY     - 1928     MONUMENTED       CGS
 HV4646  HISTORY     - 1938     SEE DESCRIPTION  CGS
 HV4646
 HV4646                          STATION DESCRIPTION
 HV4646
 HV4646'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4646'ON THE E SHORE OF POTOMAC RIVER 1/2 MILE N OF BROAD CREEK ON
 HV4646'THE SANDY POINT AT HIGH-WATER LINE.  APPROXIMATELY 11 METERS S OF
 HV4646'A CLUMP OF TREES THAT MARK THE EXTREME POINT OF THE SHORELINE,
 HV4646'AND ABOUT 100 YARDS S OF THE SMALL DOCK OF THE RIVERVIEW GOLF
 HV4646'AND COUNTRY CLUB.  MARK PROJECTS SEVERAL INCHES ABOVE SURFACE
 HV4646'AND STAMPED CLUB 1928.
 HV4646'
 HV4646'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV4646'CONCRETE.
 HV4646'
 HV4646'REFERENCE MARK IS JUST INSIDE THE WIRE FENCE ON THE LAND OF
 HV4646'RIVERVIEW GOLF AND COUNTRY CLUB NE OF STATION, PROJECTS 4 INCHES
 HV4646'ABOVE SURFACE AND STAMPED CLUB 1928.
 HV4646'
 HV4646'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS
 HV4646
 HV4646                          STATION RECOVERY (1938)
 HV4646
 HV4646'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV4646'STATION SURFACE MARK FOUND LOOSE, LYING ON SIDE, WITHOUT BRONZE
 HV4646'DISK, AT THE STATIONS PROPER POSITION AS DETERMINED FROM THE
 HV4646'REFERENCE MARK WHICH WAS FOUND IN GOOD CONDITION.  THE SUB-SURFACE
 HV4646'MARK WAS NOT SEARCHED FOR.  EROSION OF SHORE WAS RESPONSIBLE FOR
 HV4646'THE LOSS OF THE STATION SURFACE MARK.
 HV4646'
 HV4646'STATION IS 4 METERS INSIDE LOW WATER LINE, 13.5 METERS W OF
 HV4646'CENTER LINE OF DIRT ROAD, 6 METERS N OF FENCE LINE PRODUCED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1798 ***********************************************************************
 HU1798  DESIGNATION -  CLUB
 HU1798  PID         -  HU1798
 HU1798  STATE/COUNTY-  MD/WICOMICO
 HU1798  COUNTRY     -  US
 HU1798  USGS QUAD   -  EDEN (2016)
 HU1798
 HU1798                         *CURRENT SURVEY CONTROL
 HU1798  ______________________________________________________________________
 HU1798* NAD 83(1991) POSITION- 38 20 26.05214(N) 075 43 40.49461(W)   ADJUSTED
 HU1798* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1798  ______________________________________________________________________
 HU1798  GEOID HEIGHT    -        -35.770 (meters)                     GEOID18
 HU1798  LAPLACE CORR    -         -1.34  (seconds)                    DEFLEC18
 HU1798  HORZ ORDER      -  THIRD
 HU1798
 HU1798.The horizontal coordinates were established by classical geodetic methods
 HU1798.and adjusted by the National Geodetic Survey in January 1992.
 HU1798
 HU1798.The orthometric height was scaled from a topographic map.
 HU1798
 HU1798.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1798.GEOID18 height accuracy estimate available here.
 HU1798
 HU1798.Click photographs - Photos may exist for this station.
 HU1798
 HU1798.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1798
 HU1798. The following values were computed from the NAD 83(1991) position.
 HU1798
 HU1798;                    North         East     Units Scale Factor Converg.
 HU1798;SPC MD       -    75,581.054   511,207.292   MT  0.99999319   +0 47 54.3
 HU1798;SPC MD       -   247,968.84  1,677,185.92   sFT  0.99999319   +0 47 54.3
 HU1798;UTM  18      - 4,243,853.747   436,387.283   MT  0.99964983   -0 27 05.6
 HU1798
 HU1798!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1798!SPC MD       -   1.00000565  x   0.99999319  =   0.99999884
 HU1798!UTM  18      -   1.00000565  x   0.99964983  =   0.99965548
 HU1798
 HU1798:                Primary Azimuth Mark                     Grid Az
 HU1798:SPC MD       -  GOLF RESET                               292 03 49.5
 HU1798:UTM  18      -  GOLF RESET                               293 18 49.4
 HU1798
 HU1798_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3638743853(NAD 83)
 HU1798
 HU1798|---------------------------------------------------------------------|
 HU1798| PID    Reference Object                     Distance      Geod. Az  |
 HU1798|                                                           dddmmss.s |
 HU1798| DC7925 CLUB RM 2                                          23056     |
 HU1798| HU2172 GOLF RESET                          APPROX. 1.0 KM 2925143.8 |
 HU1798| DC7924 CLUB RM 1                                          34555     |
 HU1798|---------------------------------------------------------------------|
 HU1798
 HU1798                          SUPERSEDED SURVEY CONTROL
 HU1798
 HU1798  NAD 83(1986)-  38 20 26.04686(N)    075 43 40.51828(W) AD(       ) 3
 HU1798  NAD 27      -  38 20 25.63100(N)    075 43 41.77400(W) AD(       ) 3
 HU1798
 HU1798.Superseded values are not recommended for survey control.
 HU1798
 HU1798.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1798.See file dsdata.pdf to determine how the superseded data were derived.
 HU1798
 HU1798_MARKER: DS = TRIANGULATION STATION DISK
 HU1798_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1798_STAMPING: CLUB 1932
 HU1798_MARK LOGO: CGS
 HU1798_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1798+STABILITY: SURFACE MOTION
 HU1798
 HU1798  HISTORY     - Date     Condition        Report By
 HU1798  HISTORY     - 1932     MONUMENTED       CGS
 HU1798  HISTORY     - 1942     GOOD             CGS
 HU1798
 HU1798                          STATION DESCRIPTION
 HU1798
 HU1798'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1798'STATION IS ON THE N BANK OF THE WICOMICO RIVER ON A LOW BLUFF,
 HU1798'JUST OUTSIDE OF THE FAIRWAY OF THE GOLF COURSE OF THE GREEN HILL
 HU1798'COUNTRY CLUB.  THE NEAREST CORNER OF THE CLUBHOUSE IS NNE AND 120.5
 HU1798'METERS FROM THE CENTER.  A FLAGPOLE STANDING IN FRONT OF THE
 HU1798'CLUBHOUSE IS 166.5 METERS AWAY.  STATION IS 9 METERS INSIDE OF
 HU1798'THE HIGH-WATER LINE.
 HU1798'
 HU1798'STATION MARK AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1798'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HU1798'
 HU1798'HEIGHT OF SIGNAL ABOVE STATION MARK - 4.9 METERS.
 HU1798
 HU1798                          STATION RECOVERY (1942)
 HU1798
 HU1798'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1798'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HU1798'ORIGINAL DESCRIPTION--
 HU1798'
 HU1798'(1) THE FLAGPOLE IS 116 METERS FROM TRIANGULATION STATION, NOT
 HU1798'166.5 METERS.
 HU1798'
 HU1798'(2) THE STATION IS 10 METERS INSIDE OF HIGH-WATER LINE, NOT 9
 HU1798'METERS.
 HU1798'
 HU1798'THE STATION IS LOCATED ON THE N BANK OF THE WICOMICO RIVER ON A
 HU1798'LOW BLUFF, JUST OUTSIDE THE FAIRWAY OF THE GREEN HILL COUNTRY CLUB
 HU1798'GOLF COURSE.  THE CLUBHOUSE IS 0.7 MILE SW OF THE NANTICOKE ROAD,
 HU1798'AND 0.5 MILE SE OF THE WHITEHAVEN ROAD.  THE STATION IS 450 FEET
 HU1798'SE OF THE NW CORNER OF THE CLUBHOUSE, 32.8 FEET N OF THE
 HU1798'HIGH-WATER LINE OF THE WICOMICO RIVER, AND 217 FEET S OF AN 8-INCH
 HU1798'PINE TREE.  THE STATION IS A BRONZE DISK, NOT STAMPED, SET
 HU1798'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 2
 HU1798'INCHES ABOVE THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1798'
 HU1798'REFERENCE MARK NO.1 IS LOCATED 37.53 FEET N OF THE STATION,
 HU1798'326.36 FEET SE OF THE NW CORNER OF THE CLUBHOUSE, 45 FEET N OF THE
 HU1798'HIGH-WATER LINE OF THE WICOMICO RIVER, 30 FEET W OF A BLAZED CHERRY
 HU1798'TREE, AND 186.4 FEET S OF AN 8-INCH PINE TREE.  THE MARK IS A
 HU1798'BRONZE DISK, WITH THE ARROW POINTING TOWARD THE STATION, NOT
 HU1798'STAMPED, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT,
 HU1798'WHICH IS FLUSH WITH THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1798'
 HU1798'REFERENCE MARK NO.2 IS LOCATED 70.45 FEET W OF THE STATION, 33.0
 HU1798'FEET N OF THE HIGH-WATER LINE, 92.50 FEET SW OF REFERENCE MARK NO.1,
 HU1798'45.3 FEET NW OF A BLAZED CEDAR TREE AND 92.5 FEET SE OF REFERENCE
 HU1798'MARK NO.1.  THE MARK IS A BRONZE DISK, WITH THE ARROW POINTING
 HU1798'TOWARD THE STATION, NOT STAMPED, SET IN THE TOP OF A 12-INCH
 HU1798'SQUARE CONCRETE MONUMENT, WHICH IS FLUSH WITH THE GROUND.  THE
 HU1798'MARK IS IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP4247 ***********************************************************************
 DP4247  DESIGNATION -  CLUB
 DP4247  PID         -  DP4247
 DP4247  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP4247  COUNTRY     -  US
 DP4247  USGS QUAD   -  SOUTH RIVER (2016)
 DP4247
 DP4247                         *CURRENT SURVEY CONTROL
 DP4247  ______________________________________________________________________
 DP4247* NAD 83(1986) POSITION- 38 54 27.26   (N) 076 34 23.32   (W)   HD_HELD1
 DP4247* NAVD 88 ORTHO HEIGHT -    37.010 (meters)      121.42  (feet) ADJUSTED
 DP4247  ______________________________________________________________________
 DP4247  GEOID HEIGHT    -        -33.273 (meters)                     GEOID18
 DP4247  DYNAMIC HEIGHT  -         36.989 (meters)      121.35  (feet) COMP
 DP4247  MODELED GRAVITY -    980,065.1   (mgal)                       NAVD 88
 DP4247
 DP4247  VERT ORDER      -  FIRST     CLASS II
 DP4247
 DP4247.The horizontal coordinates were determined by differentially corrected
 DP4247.hand held GPS observations or other comparable positioning techniques
 DP4247.and have an estimated accuracy of +/- 3 meters.
 DP4247
 DP4247.The orthometric height was determined by differential leveling and
 DP4247.adjusted by the NATIONAL GEODETIC SURVEY
 DP4247.in November 2014.
 DP4247
 DP4247.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP4247.GEOID18 height accuracy estimate available here.
 DP4247
 DP4247.Click photographs - Photos may exist for this station.
 DP4247
 DP4247.The dynamic height is computed by dividing the NAVD 88
 DP4247.geopotential number by the normal gravity value computed on the
 DP4247.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP4247.degrees latitude (g = 980.6199 gals.).
 DP4247
 DP4247.The modeled gravity was interpolated from observed gravity values.
 DP4247
 DP4247;                    North         East    Units  Estimated Accuracy
 DP4247;SPC MD       -   137,832.4     437,023.0     MT  (+/- 3 meters HH1 GPS) 
 DP4247
 DP4247_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6359707696(NAD 83)
 DP4247
 DP4247                          SUPERSEDED SURVEY CONTROL
 DP4247
 DP4247  NAVD 88 (11/04/14)   37.010  (m)          121.42   (f) SUPERSEDED  1 2
 DP4247  NAVD 88 (08/27/14)   37.010  (m)          121.42   (f) SUPERSEDED  1 2
 DP4247
 DP4247.Superseded values are not recommended for survey control.
 DP4247
 DP4247.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DP4247.See file dsdata.pdf to determine how the superseded data were derived.
 DP4247
 DP4247_MARKER: F = FLANGE-ENCASED ROD
 DP4247_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP4247_STAMPING: CLUB 2014
 DP4247_MARK LOGO: NGS
 DP4247_PROJECTION: FLUSH
 DP4247_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP4247_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP4247_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP4247+SATELLITE: SATELLITE OBSERVATIONS - June 13, 2014
 DP4247_ROD/PIPE-DEPTH: 17.1 meters
 DP4247_SLEEVE-DEPTH  : 1.22 meters
 DP4247
 DP4247  HISTORY     - Date     Condition        Report By
 DP4247  HISTORY     - 20140613 MONUMENTED       NGS
 DP4247
 DP4247                          STATION DESCRIPTION
 DP4247
 DP4247'DESCRIBED BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 DP4247'THE STATION IS LOCATED ABOUT 14.6 KM (9.1 MI) NORTH OF DEALE, 10.5 KM
 DP4247'(6.5 MI) SOUTHWEST OF ANNAPOLIS AND 1.2 KM (0.7 MI) WEST-NORTHWEST OF
 DP4247'SOUTH RIVER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DP4247'
 DP4247'TO REACH FROM THE INTERSECTION OF MD-214 (CENTRAL AVE) AND MD-2
 DP4247'(SOLOMONS ISLAND ROAD), GO 1.3 MI (2.1 KM) SOUTH ALONG MD-2 TO SOUTH
 DP4247'RIVER CLUBHOUSE ROAD, ON YOUR LEFT, THENCE EAST ON SOUTH RIVER
 DP4247'CLUBHOUSE ROAD FOR 0.5 MI (0.8 KM) TO THE STATION ON THE LEFT, LOCATED
 DP4247'ON THE RIGHT HAND SIDE OF THE PAVED DRIVEWAY FOR 126 AND 128 SOUTH
 DP4247'RIVER CLUBHOUSE ROAD.
 DP4247'
 DP4247'NOTE-ACCESS TO DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
 DP4247'
 DP4247'IT IS 15.8 M (51.8 FT) EAST OF THE CENTERLINE OF A PAVED DRIVEWAY, 5.7
 DP4247'M (18.7 FT) NORTH OF THE CENTERLINE OF THE ROAD AND 5.5 M (18.0 FT)
 DP4247'SOUTHWEST OF A 15.4 M (50.5 FT) DIAMETER POPLAR TREE AND ABOUT 0.05 M
 DP4247'(0.0 FT) LOWER THAN THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4852 ***********************************************************************
 HV4852  DESIGNATION -  CLUB 2
 HV4852  PID         -  HV4852
 HV4852  STATE/COUNTY-  MD/MONTGOMERY
 HV4852  COUNTRY     -  US
 HV4852  USGS QUAD   -  FALLS CHURCH (2019)
 HV4852
 HV4852                         *CURRENT SURVEY CONTROL
 HV4852  ______________________________________________________________________
 HV4852* NAD 83(1993) POSITION- 38 59 44.12917(N) 077 14 16.93563(W)   ADJUSTED
 HV4852* NAVD 88 ORTHO HEIGHT -   106.329 (meters)      348.85  (feet) ADJUSTED
 HV4852  ______________________________________________________________________
 HV4852  GEOID HEIGHT    -        -31.724 (meters)                     GEOID18
 HV4852  LAPLACE CORR    -         -0.20  (seconds)                    DEFLEC18
 HV4852  DYNAMIC HEIGHT  -        106.274 (meters)      348.67  (feet) COMP
 HV4852  MODELED GRAVITY -    980,109.6   (mgal)                       NAVD 88
 HV4852
 HV4852  HORZ ORDER      -  FIRST
 HV4852  VERT ORDER      -  THIRD
 HV4852
 HV4852.The horizontal coordinates were established by classical geodetic methods
 HV4852.and adjusted by the National Geodetic Survey in November 1994.
 HV4852
 HV4852.The orthometric height was determined by differential leveling and
 HV4852.adjusted by the NATIONAL GEODETIC SURVEY
 HV4852.in September 2004.
 HV4852
 HV4852.No vertical observational check was made to the station.
 HV4852
 HV4852.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4852.GEOID18 height accuracy estimate available here.
 HV4852
 HV4852.Click photographs - Photos may exist for this station.
 HV4852
 HV4852.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4852
 HV4852.The dynamic height is computed by dividing the NAVD 88
 HV4852.geopotential number by the normal gravity value computed on the
 HV4852.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV4852.degrees latitude (g = 980.6199 gals.).
 HV4852
 HV4852.The modeled gravity was interpolated from observed gravity values.
 HV4852
 HV4852. The following values were computed from the NAD 83(1993) position.
 HV4852
 HV4852;                    North         East     Units Scale Factor Converg.
 HV4852;SPC MD       -   147,543.697   379,379.385   MT  0.99995203   -0 08 57.8
 HV4852;SPC MD       -   484,066.28  1,244,680.53   sFT  0.99995203   -0 08 57.8
 HV4852;SPC VA N     - 2,148,263.208 3,609,319.331   MT  0.99997011   +0 47 15.4
 HV4852;SPC VA N     - 7,048,093.54 11,841,575.17   sFT  0.99997011   +0 47 15.4
 HV4852;UTM  18      - 4,318,670.022   306,182.002   MT  1.00006258   -1 24 31.5
 HV4852
 HV4852!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4852!SPC MD       -   0.99998829  x   0.99995203  =   0.99994033
 HV4852!SPC VA N     -   0.99998829  x   0.99997011  =   0.99995841
 HV4852!UTM  18      -   0.99998829  x   1.00006258  =   1.00005087
 HV4852
 HV4852:                Primary Azimuth Mark                     Grid Az
 HV4852:SPC MD       -  BEND                                     308 19 10.9
 HV4852:SPC VA N     -  BEND                                     307 22 57.7
 HV4852:UTM  18      -  BEND                                     309 34 44.6
 HV4852
 HV4852_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0618218670(NAD 83)
 HV4852
 HV4852|---------------------------------------------------------------------|
 HV4852| PID    Reference Object                     Distance      Geod. Az  |
 HV4852|                                                           dddmmss.s |
 HV4852| DC6141 CLUB 2 RM 1                          32.503 METERS 03348     |
 HV4852| JV4505 BEND                                APPROX. 3.4 KM 3081013.1 |
 HV4852| HV4880 CLUB 2 RM 2                          52.537 METERS 35052     |
 HV4852|---------------------------------------------------------------------|
 HV4852
 HV4852                          SUPERSEDED SURVEY CONTROL
 HV4852
 HV4852  NAD 83(1991)-  38 59 44.12867(N)    077 14 16.93719(W) AD(       ) 1
 HV4852  NAD 83(1986)-  38 59 44.12875(N)    077 14 16.94694(W) AD(       ) 1
 HV4852  NAD 27      -  38 59 43.73391(N)    077 14 18.00587(W) AD(       ) 1
 HV4852  NGVD 29 (07/19/86)  106.7    (m)          350.     (f) VERT ANG       
 HV4852
 HV4852.Superseded values are not recommended for survey control.
 HV4852
 HV4852.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4852.See file dsdata.pdf to determine how the superseded data were derived.
 HV4852
 HV4852_MARKER: DS = TRIANGULATION STATION DISK
 HV4852_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4852_STAMPING: CLUB 2 1969
 HV4852_MARK LOGO: CGS
 HV4852_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV4852_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4852+STABILITY: SURFACE MOTION
 HV4852_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV4852+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 HV4852
 HV4852  HISTORY     - Date     Condition        Report By
 HV4852  HISTORY     - 1969     MONUMENTED       CGS
 HV4852  HISTORY     - 1969     GOOD             CGS
 HV4852  HISTORY     - 19920129 GOOD             MSI
 HV4852  HISTORY     - 20060318 GOOD             GEOCAC
 HV4852  HISTORY     - 20090329 GOOD             NGS
 HV4852  HISTORY     - 20110315 GOOD             GEOCAC
 HV4852
 HV4852                          STATION DESCRIPTION
 HV4852
 HV4852'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 HV4852'THE STATION IS IN A HEAVY WOODED AREA ALONG THE SOUTH SIDE OF MAC
 HV4852'ARTHUR BOULEVARD, 2-1/4 MILES SOUTH-SOUTHWEST OF POTOMAC, 1/2 MILE
 HV4852'NORTHEAST OF THE NORTH BANK OF THE POTOMAC RIVER, 1/4 MILE WEST OF
 HV4852'THE INTERSECTION OF FALLS ROAD AND MAC ARTHUR BOULEVARD AND ON
 HV4852'PROPERTY OF THE U.S. DEPARTMENT OF INTERIOR NATIONAL PARK SERVICE.
 HV4852'
 HV4852'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 189 AND 190
 HV4852'IN THE CENTER OF POTOMAC, GO SOUTH ON STATE HIGHWAY 189 AND FALLS
 HV4852'ROAD FOR 2.0 MILES TO A T-INTERSECTION AND JUNCTION OF MAC ARTHUR
 HV4852'BOULEVARD, TURN RIGHT AND GO WEST ON MAC ARTHUR BOULEVARD FOR 0.3
 HV4852'MILE TO MILE POST NUMBER 1 AND 9 ON THE RIGHT, CONTINUE WEST ON MAC
 HV4852'ARTHUR BOULEVARD FOR ABOUT 700 FEET TO WHERE THE ROAD TURNS RIGHT
 HV4852'AND A WOODS ROAD LEFT, TURN LEFT AND GO SOUTHWEST ON THE WOODS ROAD
 HV4852'FOR ABOUT 75 FEET TO THE STATION ON THE RIGHT.
 HV4852'
 HV4852'THE STATION MARK IS A STANDARD DISK STAMPED CLUB 2 1969, SET IN TOP
 HV4852'OF A 12-INCH CONCRETE CYLINDER WHICH PROJECTS ABOUT 2 INCHES ABOVE
 HV4852'THE GROUND SURFACE.  IT IS 106.0 FEET SOUTH OF A POWERLINE POLE
 HV4852'LETTERED AND NUMBERED PEP 621619, 87.0 FEET SOUTH OF THE CENTER
 HV4852'LINE OF MAC ARTHUR BOULEVARD, 65.84 FEET SOUTH-SOUTHEAST OF A
 HV4852'HIGHWAY RIGHT-OF-WAY MONUMENT, 53.0 FEET WEST OF THE CENTER OF
 HV4852'THE WOODS ROAD AND 6.5 FEET SOUTHEAST OF THE WITNESS POST.
 HV4852'
 HV4852'REFERENCE MARK 1 IS A STANDARD DISK STAMPED CLUB 2 NO 1 1969, SET IN
 HV4852'TOP OF A 12-INCH CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND
 HV4852'SURFACE.  IT IS 62.0 FEET EAST OF THE CENTER OF THE GRAVELED
 HV4852'DRIVEWAY, 19.4 FEET NORTH OF THE CENTER LINE OF MAC ARTHUR
 HV4852'BOULEVARD, 2.0 FEET WEST OF THE POWERLINE POLE LETTERED AND
 HV4852'NUMBERED PEP 621619 AND ABOUT THE SAME ELEVATION AS THE STATION
 HV4852'MARK.
 HV4852'
 HV4852'REFERENCE MARK 2 IS A STANDARD DISK STAMPED CLUB 2 NO 2 1969, SET IN
 HV4852'TOP OF A 12-INCH CONCRETE CYLINDER WHICH IS FLUSH THE GROUND
 HV4852'SURFACE.  IT IS 121.0 FEET WEST OF THE POWERLINE POLE LETTERED AND
 HV4852'NUMBERED PEP 621619, 57.0 FEET WEST OF THE CENTER OF THE GRAVELED
 HV4852'DRIVEWAY, 29.0 FEET NORTH OF THE CENTERLINE OF MAC ARTHUR
 HV4852'BOULEVARD, 26.4 FEET EAST OF THE POWERLINE POLE LETTERED AND
 HV4852'NUMBERED PEP 621620, AND ABOUT THE SAME ELEVATION AS THE STATION
 HV4852'MARK.
 HV4852'
 HV4852'NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
 HV4852'
 HV4852'HEIGHT OF LIGHT ABOVE STATION MARK 38 METERS.
 HV4852
 HV4852                          STATION RECOVERY (1969)
 HV4852
 HV4852'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969
 HV4852'RECOVERED IN GOOD CONDITION.
 HV4852
 HV4852                          STATION RECOVERY (1992)
 HV4852
 HV4852'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV4852'THE STATION IS IN A HEAVY WOODED AREA ALONG THE SOUTH SIDE OF MAC
 HV4852'ARTHUR BOULEVARD, 2.25 MILES (3.62 KM) SOUTH-SOUTHWEST OF POTOMAC,
 HV4852'0.5 MILE (0.8 KM) NORTHEAST OF THE NORTH BANK OF THE POTOMAC RIVER,
 HV4852'0.25 MILE (0.40 KM) WEST OF THE INTERSECTION OF FALLS ROAD AND MAC
 HV4852'ARTHUR BOULEVARD AND ON PROPERTY OF THE U.S. DEPARTMENT OF INTERIOR
 HV4852'NATIONAL PARK SERVICE.  TO REACH THE STATION FROM THE JUNCTION OF
 HV4852'STATE HIGHWAY 189 AND 190 IN THE CENTER OF POTOMAC, GO SOUTH ON STATE
 HV4852'HIGHWAY 189 AND FALLS ROAD FOR 2.0 MILES (3.2 KM) TO A T-INTERSECTION
 HV4852'AND JUNCTION OF MAC ARTHUR BOULEVARD, TURN RIGHT AND GO WEST ON MAC
 HV4852'ARTHUR BOULEVARD FOR 0.3 MILE (0.5 KM) TO MILE POST NUMBER 1 AND 9 ON
 HV4852'THE RIGHT, CONTINUE WEST ON MAC ARTHUR BOULEVARD FOR ABOUT 700 FEET
 HV4852'(213.4 M) TO WHERE THE ROAD TURNS RIGHT AND A WOODS ROAD LEFT, TURN
 HV4852'LEFT AND GO SOUTHWEST ON THE WOODS ROAD FOR ABOUT 75 FEET (22.9 M) TO
 HV4852'THE STATION ON THE RIGHT, IN TOP OF A 12-INCH CONCRETE CYLINDER
 HV4852'PROJECTING 2 INCHES ABOVE THE GROUND SURFACE, 106.0 FEET (32.3 M)
 HV4852'SOUTH OF A POWERLINE POLE LETTERED AND NUMBERED PEP 621619, 87.0 FEET
 HV4852'(26.5 M) SOUTH OF THE CENTER LINE OF MAC ARTHUR BOULEVARD, 65.84 FEET
 HV4852'(20.07 M) SOUTH-SOUTHEAST OF A HIGHWAY RIGHT-OF-WAY MONUMENT, 53.0
 HV4852'FEET (16.2 M) WEST OF THE CENTER OF THE WOODS ROAD AND 6.5 FEET (2.0
 HV4852'M) SOUTHEAST OF THE WITNESS POST.
 HV4852
 HV4852                          STATION RECOVERY (2006)
 HV4852
 HV4852'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 HV4852'STATION MARK AND RM 1 FOUND. RM 2 NOT SEARCHED FOR.
 HV4852'
 HV4852'POLE 621619, WHICH IS ADJACENT TO RM 1, IS NOW NUMBERED 732423-2545.
 HV4852
 HV4852                          STATION RECOVERY (2009)
 HV4852
 HV4852'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 HV4852'RECOVERED IN GOOD CONDITION.
 HV4852
 HV4852                          STATION RECOVERY (2011)
 HV4852
 HV4852'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 HV4852'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4880 ***********************************************************************
 HV4880  DESIGNATION -  CLUB 2 RM 2
 HV4880  PID         -  HV4880
 HV4880  STATE/COUNTY-  MD/MONTGOMERY
 HV4880  COUNTRY     -  US
 HV4880  USGS QUAD   -  FALLS CHURCH (2019)
 HV4880
 HV4880                         *CURRENT SURVEY CONTROL
 HV4880  ______________________________________________________________________
 HV4880* NAD 83(1993) POSITION- 38 59 45.81126(N) 077 14 17.28210(W)   ADJUSTED
 HV4880* NAVD 88 ORTHO HEIGHT -   106.0   (meters)      348.    (feet) VERTCON3
 HV4880  ______________________________________________________________________
 HV4880  GEOID HEIGHT    -        -31.724 (meters)                     GEOID18
 HV4880  LAPLACE CORR    -         -0.17  (seconds)                    DEFLEC18
 HV4880  HORZ ORDER      -  SECOND
 HV4880
 HV4880.The horizontal coordinates were established by classical geodetic methods
 HV4880.and adjusted by the National Geodetic Survey in November 1994.
 HV4880
 HV4880.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4880.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4880
 HV4880.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4880.GEOID18 height accuracy estimate available here.
 HV4880
 HV4880.Click photographs - Photos may exist for this station.
 HV4880
 HV4880.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4880
 HV4880. The following values were computed from the NAD 83(1993) position.
 HV4880
 HV4880;                    North         East     Units Scale Factor Converg.
 HV4880;SPC MD       -   147,595.588   379,371.183   MT  0.99995204   -0 08 58.1
 HV4880;SPC MD       -   484,236.52  1,244,653.62   sFT  0.99995204   -0 08 58.1
 HV4880;SPC VA N     - 2,148,314.959 3,609,310.281   MT  0.99997016   +0 47 15.2
 HV4880;SPC VA N     - 7,048,263.33 11,841,545.48   sFT  0.99997016   +0 47 15.2
 HV4880;UTM  18      - 4,318,722.086   306,174.941   MT  1.00006261   -1 24 31.8
 HV4880
 HV4880!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4880!SPC MD       -   0.99998835  x   0.99995204  =   0.99994039
 HV4880!SPC VA N     -   0.99998835  x   0.99997016  =   0.99995851
 HV4880!UTM  18      -   0.99998835  x   1.00006261  =   1.00005096
 HV4880
 HV4880_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0617418722(NAD 83)
 HV4880
 HV4880                          SUPERSEDED SURVEY CONTROL
 HV4880
 HV4880  NAD 83(1991)-  38 59 45.81076(N)    077 14 17.28366(W) AD(       ) 2
 HV4880  NAD 83(1986)-  38 59 45.81083(N)    077 14 17.29341(W) AD(       ) 2
 HV4880  NAD 27      -  38 59 45.41601(N)    077 14 18.35234(W) AD(       ) 2
 HV4880  NGVD 29 (07/19/86)  106.2    (m)          348.     (f) VERT ANG       
 HV4880
 HV4880.Superseded values are not recommended for survey control.
 HV4880
 HV4880.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4880.See file dsdata.pdf to determine how the superseded data were derived.
 HV4880
 HV4880_MARKER: DR = REFERENCE MARK DISK
 HV4880_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4880_STAMPING: CLUB 2 NO 2 1969
 HV4880_MARK LOGO: CGS
 HV4880_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4880+STABILITY: SURFACE MOTION
 HV4880_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV4880+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2008
 HV4880
 HV4880  HISTORY     - Date     Condition        Report By
 HV4880  HISTORY     - 1969     MONUMENTED       CGS
 HV4880  HISTORY     - 20080923 GOOD             INDIV
 HV4880  HISTORY     - 20110315 MARK NOT FOUND   GEOCAC
 HV4880
 HV4880                          STATION DESCRIPTION
 HV4880
 HV4880'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 HV4880'MARK IS A STANDARD DISK STAMPED CLUB 2 NO 2 1969, SET IN TOP OF
 HV4880'A 12 INCH CONCRETE CYLINDER WHICH IS FLUSH WITH THE GROUND
 HV4880'SURFACE.  IT IS 121.0 FEET WEST OF THE POWERLINE POLE LETTERED
 HV4880'AND NUMBERED PEP 621619, 57.0 FEET WEST OF THE GRAVELED DRIVEWAY,
 HV4880'29.0 FEET NORTH OF THE CENTERLINE OF MAC ARTHUR BOULEVARD, 26.4
 HV4880'FEET EAST OF THE POWERLINE POLE LETTERED AND NUMBER PEP 621620,
 HV4880'AND ABOUT THE SAME ELEVATION AS THE STATION MARK.
 HV4880
 HV4880                          STATION RECOVERY (2008)
 HV4880
 HV4880'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2008 (MPA)
 HV4880'UPDATE TO THE DESCRIPTION -
 HV4880'STATION IS 59.0 FEET WEST OF THE CENTERLINE OF A GRAVELED DRIVEWAY,
 HV4880'29.0 FEET NORTH OF THE CENTERLINE OF MAC ARTHUR BOULEVARD, 27.0 FEET
 HV4880'EAST OF A POWERLINE POLE NUMBERED 732423-1758, AND FLUSH WITH GROUND
 HV4880'LEVEL.
 HV4880
 HV4880                          STATION RECOVERY (2011)
 HV4880
 HV4880'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 HV4880'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4845 ***********************************************************************
 HV4845  DESIGNATION -  CLUB PB PP 1930
 HV4845  PID         -  HV4845
 HV4845  STATE/COUNTY-  MD/MONTGOMERY
 HV4845  COUNTRY     -  US
 HV4845  USGS QUAD   -  FALLS CHURCH (2019)
 HV4845
 HV4845                         *CURRENT SURVEY CONTROL
 HV4845  ______________________________________________________________________
 HV4845* NAD 83(1993) POSITION- 38 59 45.80122(N) 077 14 19.09628(W)   ADJUSTED
 HV4845* NAVD 88 ORTHO HEIGHT -   107.1   (meters)      351.    (feet) VERTCON3
 HV4845  ______________________________________________________________________
 HV4845  GEOID HEIGHT    -        -31.724 (meters)                     GEOID18
 HV4845  LAPLACE CORR    -         -0.16  (seconds)                    DEFLEC18
 HV4845  HORZ ORDER      -  SECOND
 HV4845
 HV4845.The horizontal coordinates were established by classical geodetic methods
 HV4845.and adjusted by the National Geodetic Survey in November 1994.
 HV4845
 HV4845.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4845.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4845
 HV4845.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4845.GEOID18 height accuracy estimate available here.
 HV4845
 HV4845.Click photographs - Photos may exist for this station.
 HV4845
 HV4845.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4845
 HV4845. The following values were computed from the NAD 83(1993) position.
 HV4845
 HV4845;                    North         East     Units Scale Factor Converg.
 HV4845;SPC MD       -   147,595.392   379,327.528   MT  0.99995204   -0 08 59.2
 HV4845;SPC MD       -   484,235.88  1,244,510.40   sFT  0.99995204   -0 08 59.2
 HV4845;UTM  18      - 4,318,722.850   306,131.287   MT  1.00006282   -1 24 32.9
 HV4845
 HV4845!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4845!SPC MD       -   0.99998818  x   0.99995204  =   0.99994022
 HV4845!UTM  18      -   0.99998818  x   1.00006282  =   1.00005100
 HV4845
 HV4845:                Primary Azimuth Mark                     Grid Az
 HV4845:SPC MD       -  DOG PB PP                                146 13 01.1
 HV4845:UTM  18      -  DOG PB PP                                147 28 34.8
 HV4845
 HV4845_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0613118722(NAD 83)
 HV4845
 HV4845|---------------------------------------------------------------------|
 HV4845| PID    Reference Object                     Distance      Geod. Az  |
 HV4845|                                                           dddmmss.s |
 HV4845| HV4842 DOG PB PP                           APPROX. 1.0 KM 1460401.9 |
 HV4845|---------------------------------------------------------------------|
 HV4845
 HV4845                          SUPERSEDED SURVEY CONTROL
 HV4845
 HV4845  NAD 83(1991)-  38 59 45.80072(N)    077 14 19.09784(W) AD(       ) 2
 HV4845  NAD 83(1986)-  38 59 45.80079(N)    077 14 19.10705(W) AD(       ) 2
 HV4845  NAD 27      -  38 59 45.40595(N)    077 14 20.16648(W) AD(       ) 2
 HV4845  NGVD 29 (07/19/86)  107.3    (m)          352.     (f) VERT ANG       
 HV4845
 HV4845.Superseded values are not recommended for survey control.
 HV4845
 HV4845.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4845.See file dsdata.pdf to determine how the superseded data were derived.
 HV4845
 HV4845_MARKER: DD = SURVEY DISK
 HV4845_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV4845_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4845
 HV4845  HISTORY     - Date     Condition        Report By
 HV4845  HISTORY     - 1930     MONUMENTED       PBPP
 HV4845  HISTORY     - 1970     GOOD             NGS
 HV4845
 HV4845                          STATION DESCRIPTION
 HV4845
 HV4845'DESCRIBED BY PUB BLDGS AND PARKS 1930 (PB)
 HV4845'STATION IS LOCATED ON THE MARYLAND SIDE OF THE POTOMAC RIVER, ON THE
 HV4845'S SIDE OF GREAT FALLS-WASHINGTON HIGHWAY, 1.0 MILE FROM GREAT
 HV4845'FALLS, MARYLAND AND ABOUT 700 FEET FROM MILEPOST GREAT FALLS, 1.0
 HV4845'MILE--D.C., 9.0 MILES AT CURVE IN ROAD, WHERE ROAD BEGINS TO
 HV4845'DESCEND TO GREAT FALLS AND ABOUT 95 FEET FROM CENTER LINE OF ROAD
 HV4845'AND ABOUT 300 FEET FROM NEW BRICK SUNGALOW.
 HV4845'
 HV4845'SURFACE AND AZIMUTH MARKS ARE STANDARD P.B. AND P.P. BRASS DISKS SET
 HV4845'IN 24-INCH TERRA COTTA PIPE FILLED WITH CONCRETE.
 HV4845'
 HV4845'UNDERGROUND MARK IS A STANDARD BRASS DISK SET IN 6 INCHES OF
 HV4845'CONCRETE.
 HV4845'
 HV4845'ENTRANCE TO STATION IS ALONG GREAT FALLS-WASHINGTON HIGHWAY TO
 HV4845'MILEPOST G.F., 1.0 MILE, THENCE ALONG HIGHWAY ABOUT 700 FEET TO
 HV4845'LANE LEADING TO LEFT, 80 FEET S OF ENTRANCE TO LANE.
 HV4845
 HV4845                          STATION RECOVERY (1970)
 HV4845
 HV4845'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV4845'THE STATION IS IN A HEAVILY WOODED AREA ALONG THE SOUTH SIDE OF
 HV4845'MACARTHUR BOULEVARD, 2-1/4 MILES SOUTH-SOUTHWEST OF POTOMAC, 1/2
 HV4845'MILE NORTHEAST OF THE NORTH BANK OF THE POTOMAC RIVER AND ON
 HV4845'PROPERTY OF U.S. DEPARTMENT OF INTERIOR NATIONAL PARK SERVICE.
 HV4845'
 HV4845'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 189 AND
 HV4845'MACARTHUR BOULEVARD, WHICH IS 2 MILES SOUTH OF POTOMAC, GO WEST
 HV4845'ON MACARTHUR BOULEVARD FOR 0.3 MILE TO MILEPOST NUMBER 1 AND 9
 HV4845'ON THE RIGHT.  CONTINUE 0.1 MILE TO WHERE THE ROAD CURVES RIGHT
 HV4845'AND THE MARK ON THE LEFT.
 HV4845'
 HV4845'THE MARK IS A BRONZE DISK OF U.S. PUBLIC BUILDINGS AND PUBLIC PARKS,
 HV4845'NOT STAMPED, SET IN THE TOP OF AN 8 INCH ROUND TERRA COTTA PIPE
 HV4845'THAT IS 1 INCH BELOW THE GROUND SURFACE.  IT IS 94.0 FEET SOUTH OF
 HV4845'THE CENTER OF MACARTHUR BOULEVARD.
 HV4845'
 HV4845'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2-1/4 MILES
 HV4845'SOUTH-SOUTHWEST OF POTOMAC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6270 ***********************************************************************
 HV6270  DESIGNATION -  CLUMP
 HV6270  PID         -  HV6270
 HV6270  STATE/COUNTY-  MD/TALBOT
 HV6270  COUNTRY     -  US
 HV6270  USGS QUAD   -  CLAIBORNE (2016)
 HV6270
 HV6270                         *CURRENT SURVEY CONTROL
 HV6270  ______________________________________________________________________
 HV6270* NAD 83(1991) POSITION- 38 47 04.97929(N) 076 16 21.63632(W)   ADJUSTED
 HV6270* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6270  ______________________________________________________________________
 HV6270  GEOID HEIGHT    -        -34.206 (meters)                     GEOID18
 HV6270  LAPLACE CORR    -         -5.14  (seconds)                    DEFLEC18
 HV6270  HORZ ORDER      -  THIRD
 HV6270
 HV6270.The horizontal coordinates were established by classical geodetic methods
 HV6270.and adjusted by the National Geodetic Survey in January 1992.
 HV6270
 HV6270.The orthometric height was scaled from a topographic map.
 HV6270
 HV6270.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6270.GEOID18 height accuracy estimate available here.
 HV6270
 HV6270.Click photographs - Photos may exist for this station.
 HV6270
 HV6270.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6270
 HV6270. The following values were computed from the NAD 83(1991) position.
 HV6270
 HV6270;                    North         East     Units Scale Factor Converg.
 HV6270;SPC MD       -   124,359.766   463,192.120   MT  0.99995111   +0 27 23.4
 HV6270;SPC MD       -   408,003.67  1,519,656.15   sFT  0.99995111   +0 27 23.4
 HV6270;UTM  18      - 4,293,655.853   389,461.536   MT  0.99975046   -0 47 50.2
 HV6270
 HV6270!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6270!SPC MD       -   1.00000540  x   0.99995111  =   0.99995651
 HV6270!UTM  18      -   1.00000540  x   0.99975046  =   0.99975586
 HV6270
 HV6270:                Primary Azimuth Mark                     Grid Az
 HV6270:SPC MD       -  OTTO                                     047 02 30.4
 HV6270:UTM  18      -  OTTO                                     048 17 44.0
 HV6270
 HV6270_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8946193655(NAD 83)
 HV6270
 HV6270|---------------------------------------------------------------------|
 HV6270| PID    Reference Object                     Distance      Geod. Az  |
 HV6270|                                                           dddmmss.s |
 HV6270| HV6233 OTTO                                APPROX. 0.5 KM 0472953.8 |
 HV6270| HV6235 MILLER                              485.849 METERS 0915010.4 |
 HV6270| HV6245 PINK                                APPROX. 0.6 KM 1620101.9 |
 HV6270| HV6274 HARRISON                            APPROX. 0.5 KM 2123303.7 |
 HV6270| HV6234 LAWN                                318.488 METERS 35903     |
 HV6270|---------------------------------------------------------------------|
 HV6270
 HV6270                          SUPERSEDED SURVEY CONTROL
 HV6270
 HV6270  NAD 83(1986)-  38 47 04.97537(N)    076 16 21.65054(W) AD(       ) 3
 HV6270  NAD 27      -  38 47 04.52600(N)    076 16 22.87100(W) AD(       ) 3
 HV6270  USSD        -  38 47 04.91700(N)    076 16 22.66800(W) AD(       ) 3
 HV6270
 HV6270.Superseded values are not recommended for survey control.
 HV6270
 HV6270.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6270.See file dsdata.pdf to determine how the superseded data were derived.
 HV6270
 HV6270_MARKER: H = DRILL HOLE
 HV6270_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6270_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6270_PROJECTION: PROJECTING 10 CENTIMETERS
 HV6270_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6270
 HV6270  HISTORY     - Date     Condition        Report By
 HV6270  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6270  HISTORY     - 1934     POOR             CGS
 HV6270  HISTORY     - 1940     POOR             CGS
 HV6270  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6270
 HV6270                          STATION DESCRIPTION
 HV6270
 HV6270'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6270'ON THE WESTERN SHORE OF THE UPPER PART OF HARRIS CREEK, ABOUT
 HV6270'3/4 MILE N OF TOWN OF BOZMAN, ON MARSH POINT, ABOUT 2 FEET ABOVE
 HV6270'HIGH WATER, 6 YARDS W OF SHORE, AND 15 YARDS E OF FRINGE OF
 HV6270'LOCUST TREES AND VINES.  STATION IS MARKED BY A HOLE IN THE CENTER
 HV6270'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT,
 HV6270'AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6270'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6270'COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE CENTER
 HV6270'OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES
 HV6270'BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6270'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--S CHIMNEY OF
 HV6270'HARRISONS LOWER HOUSE, 1/4 MILE, S 40 DEG 52 MIN W.  NAIL IN BLAZE
 HV6270'IN 6-INCH HACKBERRY TREE, 17.75 METERS (58.2 FEET) N 79 DEG 57
 HV6270'MIN W.  S CHIMNEY OF HARRISONS HOUSE, 1-1/4 MILES, N 27 DEG 47
 HV6270'MIN E.  S GABLE OF HARRISONS BARN, 1-1/4 MILES, N 30 DEG 44
 HV6270'MIN E.  S CHIMNEY OF SMALL HOUSE, 1/4 MILE, S 83 DEG 48 MIN E.
 HV6270'S CHIMNEY OF HOUSE, 1-1/8 MILES, S 72 DEG 15 MIN E.  N CHIMNEY OF
 HV6270'HOUSE, 3/8 MILE, S 30 DEG 48 MIN E.  N CHIMNEY OF HOUSE, 1/2
 HV6270'MILE, S 8 DEG 50 MIN E.
 HV6270
 HV6270                          STATION RECOVERY (1934)
 HV6270
 HV6270'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 HV6270'STATION RECOVERED.  ON MARSHY POINT ABOUT 2 FEET ABOVE
 HV6270'HIGH-WATER LINE.  ABOUT 7 METERS W OF POINT.  MONUMENT IS BROKEN
 HV6270'OFF AT THE TOP, PIECE BEING LOOSE, BUT IN POSITION.  MARKER IS
 HV6270'M.S.F.S. MONUMENT.
 HV6270
 HV6270                          STATION RECOVERY (1940)
 HV6270
 HV6270'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6270'STATION MARK RECOVERED.  TOP IS BROKEN OFF AND IS NOW FLUSH WITH
 HV6270'SURFACE OF GROUND.  SUBSURFACE MARK WAS NOT DUG FOR.  ON THE
 HV6270'WESTERN SHORE OF THE UPPER PART OF HARRIS CREEK, ABOUT 3/4 MILE
 HV6270'N OF THE TOWN OF BOZMAN, ON MARSH POINT, ABOUT 2 FEET ABOVE
 HV6270'HIGH WATER, 4 YARDS W OF SHORE, 23 YARDS E OF FRINGE OF LOCUST
 HV6270'TREES AND VINES, AND 20 YARDS N OF EXTREME END OF POINT.
 HV6270
 HV6270                          STATION RECOVERY (1961)
 HV6270
 HV6270'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6270'STATION NOT RECOVERED AFTER A CAREFUL SEARCH OF THE AREA.  THE
 HV6270'PUBLISHED DESCRIPTION IS NOW INADEQUATE FOR RECOVERY OF THE
 HV6270'STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6360 ***********************************************************************
 HV6360  DESIGNATION -  CLUMP
 HV6360  PID         -  HV6360
 HV6360  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6360  COUNTRY     -  US
 HV6360  USGS QUAD   -  ANNAPOLIS (2016)
 HV6360
 HV6360                         *CURRENT SURVEY CONTROL
 HV6360  ______________________________________________________________________
 HV6360* NAD 83(1991) POSITION- 38 59 44.89134(N) 076 24 46.69996(W)   ADJUSTED
 HV6360* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6360  ______________________________________________________________________
 HV6360  GEOID HEIGHT    -        -33.439 (meters)                     GEOID18
 HV6360  LAPLACE CORR    -         -2.42  (seconds)                    DEFLEC18
 HV6360  HORZ ORDER      -  THIRD
 HV6360
 HV6360.The horizontal coordinates were established by classical geodetic methods
 HV6360.and adjusted by the National Geodetic Survey in January 1992.
 HV6360
 HV6360.The orthometric height was scaled from a topographic map.
 HV6360
 HV6360.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6360.GEOID18 height accuracy estimate available here.
 HV6360
 HV6360.Click photographs - Photos may exist for this station.
 HV6360
 HV6360.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6360
 HV6360. The following values were computed from the NAD 83(1991) position.
 HV6360
 HV6360;                    North         East     Units Scale Factor Converg.
 HV6360;SPC MD       -   147,703.818   450,852.321   MT  0.99995203   +0 22 06.4
 HV6360;SPC MD       -   484,591.61  1,479,171.32   sFT  0.99995203   +0 22 06.4
 HV6360;UTM  18      - 4,317,260.382   377,638.421   MT  0.99978436   -0 53 21.3
 HV6360
 HV6360!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6360!SPC MD       -   1.00000528  x   0.99995203  =   0.99995731
 HV6360!UTM  18      -   1.00000528  x   0.99978436  =   0.99978964
 HV6360
 HV6360:                Primary Azimuth Mark                     Grid Az
 HV6360:SPC MD       -  SANDY POINT LIGHTHOUSE                   047 24 33.6
 HV6360:UTM  18      -  SANDY POINT LIGHTHOUSE                   048 40 01.3
 HV6360
 HV6360_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7763817260(NAD 83)
 HV6360
 HV6360|---------------------------------------------------------------------|
 HV6360| PID    Reference Object                     Distance      Geod. Az  |
 HV6360|                                                           dddmmss.s |
 HV6360| JV5241 SANDY POINT LIGHTHOUSE              APPROX. 3.3 KM 0474640.0 |
 HV6360| CX2621 CLUMP RM                              6.420 METERS 26548     |
 HV6360|---------------------------------------------------------------------|
 HV6360
 HV6360                          SUPERSEDED SURVEY CONTROL
 HV6360
 HV6360  NAD 83(1986)-  38 59 44.88718(N)    076 24 46.71141(W) AD(       ) 3
 HV6360  NAD 27      -  38 59 44.49000(N)    076 24 47.84800(W) AD(       ) 3
 HV6360  USSD        -  38 59 44.84400(N)    076 24 47.70100(W) AD(       ) 3
 HV6360
 HV6360.Superseded values are not recommended for survey control.
 HV6360
 HV6360.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6360.See file dsdata.pdf to determine how the superseded data were derived.
 HV6360
 HV6360_MARKER: N = NAIL
 HV6360_SETTING: 0 = UNSPECIFIED SETTING
 HV6360
 HV6360  HISTORY     - Date     Condition        Report By
 HV6360  HISTORY     - 1906     MONUMENTED       MDSFC
 HV6360  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6360  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV6360
 HV6360                          STATION DESCRIPTION
 HV6360
 HV6360'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV6360'ON THE W SHORE OF CHESAPEAKE BAY, ABOUT ONE-THIRD THE WAY FROM
 HV6360'HACKETT POINT TO SANDY POINT, ON THE NARROW NECK OF LAND E OF
 HV6360'GOOSE POND, JUST E OF A GROUP OF PINE TREES AND 3 FEET ABOVE AND
 HV6360'15 FEET BACK FROM HIGH-WATER MARK.  CENTER MARKED BY NAIL IN STUB
 HV6360'SET FLUSH WITH GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN
 HV6360'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6360'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV6360'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HV6360'ARE COUNTER-SUNK IN TOP OF POST.  IT IS 6.42 METERS (21.06 FEET)
 HV6360'FROM STATION S 85 DEG 49 MIN W.  OTHER DISTANCES AND
 HV6360'BEARINGS ARE AS FOLLOWS--NAIL IN BLAZE ON 10-INCH PINE TREE,
 HV6360'8.00 METERS (26.25 FEET), S 53 DEG 45 MIN W.  NAIL IN BLAZE ON
 HV6360'10-INCH PINE TREE, 8.68 METERS (28.48 FEET), N 64 DEG 56 MIN W.  W
 HV6360'CHIMNEY OF WHITE HOUSE, 1 MILE, N 0 DEG 56 MIN E.
 HV6360
 HV6360                          STATION RECOVERY (1932)
 HV6360
 HV6360'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6360'THE STATION IS LOST.
 HV6360'
 HV6360'THE SHORELINE HAS WASHED AWAY BEYOND THE LOCATION OF THE STATION
 HV6360'AND THE REFERENCE MONUMENT.
 HV6360
 HV6360                          STATION RECOVERY (2003)
 HV6360
 HV6360'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6360'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DM3753 ***********************************************************************
 DM3753  HT_MOD      -  This is a Height Modernization Survey Station.
 DM3753  DESIGNATION -  CM 1
 DM3753  PID         -  DM3753
 DM3753  STATE/COUNTY-  MD/TALBOT
 DM3753  COUNTRY     -  US
 DM3753  USGS QUAD   -  DEALE OE E (2016)
 DM3753
 DM3753                         *CURRENT SURVEY CONTROL
 DM3753  ______________________________________________________________________
 DM3753* NAD 83(2011) POSITION- 38 45 52.21590(N) 076 22 51.58672(W)   ADJUSTED
 DM3753* NAD 83(2011) ELLIP HT-   -32.143 (meters)        (06/27/12)   ADJUSTED
 DM3753* NAD 83(2011) EPOCH   -  2010.00
 DM3753* NAVD 88 ORTHO HEIGHT -     1.79  (meters)        5.9   (feet) GPS OBS
 DM3753  ______________________________________________________________________
 DM3753  NAVD 88 orthometric height was determined with geoid model    GEOID09
 DM3753  GEOID HEIGHT    -        -33.895 (meters)                     GEOID09
 DM3753  GEOID HEIGHT    -        -33.945 (meters)                     GEOID18
 DM3753  NAD 83(2011) X  -  1,172,545.490 (meters)                     COMP
 DM3753  NAD 83(2011) Y  - -4,839,698.073 (meters)                     COMP
 DM3753  NAD 83(2011) Z  -  3,971,946.118 (meters)                     COMP
 DM3753  LAPLACE CORR    -         -5.27  (seconds)                    DEFLEC18
 DM3753
 DM3753  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DM3753  Standards:
 DM3753         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DM3753            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DM3753  -------------------------------------------------------------------
 DM3753  NETWORK    0.62   2.35           0.27   0.23   1.20     -0.09693217
 DM3753  -------------------------------------------------------------------
 DM3753  Click here for local accuracies and other accuracy information.
 DM3753
 DM3753.The horizontal coordinates were established by GPS observations
 DM3753.and adjusted by the National Geodetic Survey in June 2012.
 DM3753
 DM3753.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DM3753.been affixed to the stable North American tectonic plate. See 
 DM3753.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DM3753
 DM3753.The horizontal coordinates are valid at the epoch date displayed above
 DM3753.which is a decimal equivalence of Year/Month/Day.
 DM3753
 DM3753.The orthometric height was determined by GPS observations and a
 DM3753.high-resolution geoid model using precise GPS observation and
 DM3753.processing techniques.
 DM3753
 DM3753.Significant digits in the geoid height do not necessarily reflect accuracy.
 DM3753.GEOID18 height accuracy estimate available here.
 DM3753
 DM3753.Click photographs - Photos may exist for this station.
 DM3753
 DM3753.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DM3753
 DM3753.The Laplace correction was computed from DEFLEC18 derived deflections.
 DM3753
 DM3753.The ellipsoidal height was determined by GPS observations
 DM3753.and is referenced to NAD 83.
 DM3753
 DM3753. The following values were computed from the NAD 83(2011) position.
 DM3753
 DM3753;                    North         East     Units Scale Factor Converg.
 DM3753;SPC MD       -   122,046.764   453,796.349   MT  0.99995173   +0 23 18.6
 DM3753;SPC MD       -   400,415.09  1,488,830.19   sFT  0.99995173   +0 23 18.6
 DM3753;UTM  18      - 4,291,549.348   380,019.186   MT  0.99977727   -0 51 53.2
 DM3753
 DM3753!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DM3753!SPC MD       -   1.00000504  x   0.99995173  =   0.99995677
 DM3753!UTM  18      -   1.00000504  x   0.99977727  =   0.99978231
 DM3753
 DM3753_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8001991549(NAD 83)
 DM3753
 DM3753                          SUPERSEDED SURVEY CONTROL
 DM3753
 DM3753  NAD 83(2007)-  38 45 52.21612(N)    076 22 51.58777(W) AD(2002.00) B
 DM3753  ELLIP H (10/15/10)  -32.122  (m)                       GP(2002.00) 4 1
 DM3753
 DM3753.Superseded values are not recommended for survey control.
 DM3753
 DM3753.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DM3753.See file dsdata.pdf to determine how the superseded data were derived.
 DM3753
 DM3753_MARKER: DD = SURVEY DISK
 DM3753_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 DM3753+WITH SETTING: INFORMATION.
 DM3753_STAMPING: CM 1
 DM3753_MARK LOGO: USACE
 DM3753_MAGNETIC: N = NO MAGNETIC MATERIAL
 DM3753_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DM3753_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DM3753+SATELLITE: SATELLITE OBSERVATIONS - July 13, 2010
 DM3753
 DM3753  HISTORY     - Date     Condition        Report By
 DM3753  HISTORY     - UNK      MONUMENTED
 DM3753  HISTORY     - 20100713 GOOD             USACE
 DM3753
 DM3753                          STATION DESCRIPTION
 DM3753
 DM3753'DESCRIBED BY US ARMY CORPS OF ENGINEERS 2010 (JC)
 DM3753'INDIVIDUAL USING THIS MARK WILL HAVE OBTAINED ACCESS AND SPECIFIC
 DM3753'LOCATION FROM THE CORPS OF ENGINEERS, BALTIMORE DISTRICT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DM3754 ***********************************************************************
 DM3754  HT_MOD      -  This is a Height Modernization Survey Station.
 DM3754  DESIGNATION -  CM 2
 DM3754  PID         -  DM3754
 DM3754  STATE/COUNTY-  MD/TALBOT
 DM3754  COUNTRY     -  US
 DM3754  USGS QUAD   -  DEALE OE E (2016)
 DM3754
 DM3754                         *CURRENT SURVEY CONTROL
 DM3754  ______________________________________________________________________
 DM3754* NAD 83(2011) POSITION- 38 46 22.99631(N) 076 22 46.77309(W)   ADJUSTED
 DM3754* NAD 83(2011) ELLIP HT-   -31.527 (meters)        (06/27/12)   ADJUSTED
 DM3754* NAD 83(2011) EPOCH   -  2010.00
 DM3754* NAVD 88 ORTHO HEIGHT -     2.40  (meters)        7.9   (feet) GPS OBS
 DM3754  ______________________________________________________________________
 DM3754  NAVD 88 orthometric height was determined with geoid model    GEOID09
 DM3754  GEOID HEIGHT    -        -33.880 (meters)                     GEOID09
 DM3754  GEOID HEIGHT    -        -33.931 (meters)                     GEOID18
 DM3754  NAD 83(2011) X  -  1,172,518.588 (meters)                     COMP
 DM3754  NAD 83(2011) Y  - -4,839,093.549 (meters)                     COMP
 DM3754  NAD 83(2011) Z  -  3,972,686.539 (meters)                     COMP
 DM3754  LAPLACE CORR    -         -5.25  (seconds)                    DEFLEC18
 DM3754
 DM3754  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DM3754  Standards:
 DM3754         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DM3754            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DM3754  -------------------------------------------------------------------
 DM3754  NETWORK    0.47   1.86           0.20   0.18   0.95     -0.03955015
 DM3754  -------------------------------------------------------------------
 DM3754  Click here for local accuracies and other accuracy information.
 DM3754
 DM3754.The horizontal coordinates were established by GPS observations
 DM3754.and adjusted by the National Geodetic Survey in June 2012.
 DM3754
 DM3754.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DM3754.been affixed to the stable North American tectonic plate. See 
 DM3754.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DM3754
 DM3754.The horizontal coordinates are valid at the epoch date displayed above
 DM3754.which is a decimal equivalence of Year/Month/Day.
 DM3754
 DM3754.The orthometric height was determined by GPS observations and a
 DM3754.high-resolution geoid model using precise GPS observation and
 DM3754.processing techniques.
 DM3754
 DM3754.Significant digits in the geoid height do not necessarily reflect accuracy.
 DM3754.GEOID18 height accuracy estimate available here.
 DM3754
 DM3754.Click photographs - Photos may exist for this station.
 DM3754
 DM3754.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DM3754
 DM3754.The Laplace correction was computed from DEFLEC18 derived deflections.
 DM3754
 DM3754.The ellipsoidal height was determined by GPS observations
 DM3754.and is referenced to NAD 83.
 DM3754
 DM3754. The following values were computed from the NAD 83(2011) position.
 DM3754
 DM3754;                    North         East     Units Scale Factor Converg.
 DM3754;SPC MD       -   122,996.643   453,906.104   MT  0.99995145   +0 23 21.6
 DM3754;SPC MD       -   403,531.49  1,489,190.28   sFT  0.99995145   +0 23 21.6
 DM3754;UTM  18      - 4,292,496.433   380,149.669   MT  0.99977688   -0 51 50.7
 DM3754
 DM3754!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DM3754!SPC MD       -   1.00000495  x   0.99995145  =   0.99995640
 DM3754!UTM  18      -   1.00000495  x   0.99977688  =   0.99978183
 DM3754
 DM3754_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8014992496(NAD 83)
 DM3754
 DM3754                          SUPERSEDED SURVEY CONTROL
 DM3754
 DM3754  NAD 83(2007)-  38 46 22.99655(N)    076 22 46.77408(W) AD(2002.00) B
 DM3754  ELLIP H (10/15/10)  -31.507  (m)                       GP(2002.00) 4 1
 DM3754
 DM3754.Superseded values are not recommended for survey control.
 DM3754
 DM3754.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DM3754.See file dsdata.pdf to determine how the superseded data were derived.
 DM3754
 DM3754_MARKER: DD = SURVEY DISK
 DM3754_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 DM3754+WITH SETTING: INFORMATION.
 DM3754_STAMPING: CM 2
 DM3754_MARK LOGO: USACE
 DM3754_MAGNETIC: N = NO MAGNETIC MATERIAL
 DM3754_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DM3754_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DM3754+SATELLITE: SATELLITE OBSERVATIONS - July 13, 2010
 DM3754
 DM3754  HISTORY     - Date     Condition        Report By
 DM3754  HISTORY     - UNK      MONUMENTED
 DM3754  HISTORY     - 20100713 GOOD             USACE
 DM3754
 DM3754                          STATION DESCRIPTION
 DM3754
 DM3754'DESCRIBED BY US ARMY CORPS OF ENGINEERS 2010 (JC)
 DM3754'INDIVIDUAL USING THIS MARK WILL HAVE OBTAINED ACCESS AND SPECIFIC
 DM3754'LOCATION FROM THE CORPS OF ENGINEERS, BALTIMORE DISTRICT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DM3755 ***********************************************************************
 DM3755  HT_MOD      -  This is a Height Modernization Survey Station.
 DM3755  DESIGNATION -  CM 3 TRUE
 DM3755  PID         -  DM3755
 DM3755  STATE/COUNTY-  MD/TALBOT
 DM3755  COUNTRY     -  US
 DM3755  USGS QUAD   -  DEALE OE E (2016)
 DM3755
 DM3755                         *CURRENT SURVEY CONTROL
 DM3755  ______________________________________________________________________
 DM3755* NAD 83(2011) POSITION- 38 45 29.70798(N) 076 22 39.66089(W)   ADJUSTED
 DM3755* NAD 83(2011) ELLIP HT-   -32.724 (meters)        (06/27/12)   ADJUSTED
 DM3755* NAD 83(2011) EPOCH   -  2010.00
 DM3755* NAVD 88 ORTHO HEIGHT -     1.23  (meters)        4.0   (feet) GPS OBS
 DM3755  ______________________________________________________________________
 DM3755  NAVD 88 orthometric height was determined with geoid model    GEOID09
 DM3755  GEOID HEIGHT    -        -33.918 (meters)                     GEOID09
 DM3755  GEOID HEIGHT    -        -33.967 (meters)                     GEOID18
 DM3755  NAD 83(2011) X  -  1,172,927.545 (meters)                     COMP
 DM3755  NAD 83(2011) Y  - -4,840,052.142 (meters)                     COMP
 DM3755  NAD 83(2011) Z  -  3,971,404.555 (meters)                     COMP
 DM3755  LAPLACE CORR    -         -5.30  (seconds)                    DEFLEC18
 DM3755
 DM3755  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DM3755  Standards:
 DM3755         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DM3755            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DM3755  -------------------------------------------------------------------
 DM3755  NETWORK    0.41   1.61           0.18   0.15   0.82     -0.07018449
 DM3755  -------------------------------------------------------------------
 DM3755  Click here for local accuracies and other accuracy information.
 DM3755
 DM3755.The horizontal coordinates were established by GPS observations
 DM3755.and adjusted by the National Geodetic Survey in June 2012.
 DM3755
 DM3755.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DM3755.been affixed to the stable North American tectonic plate. See 
 DM3755.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DM3755
 DM3755.The horizontal coordinates are valid at the epoch date displayed above
 DM3755.which is a decimal equivalence of Year/Month/Day.
 DM3755
 DM3755.The orthometric height was determined by GPS observations and a
 DM3755.high-resolution geoid model using precise GPS observation and
 DM3755.processing techniques.
 DM3755
 DM3755.Significant digits in the geoid height do not necessarily reflect accuracy.
 DM3755.GEOID18 height accuracy estimate available here.
 DM3755
 DM3755.Click photographs - Photos may exist for this station.
 DM3755
 DM3755.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DM3755
 DM3755.The Laplace correction was computed from DEFLEC18 derived deflections.
 DM3755
 DM3755.The ellipsoidal height was determined by GPS observations
 DM3755.and is referenced to NAD 83.
 DM3755
 DM3755. The following values were computed from the NAD 83(2011) position.
 DM3755
 DM3755;                    North         East     Units Scale Factor Converg.
 DM3755;SPC MD       -   121,354.709   454,088.978   MT  0.99995194   +0 23 26.1
 DM3755;SPC MD       -   398,144.57  1,489,790.26   sFT  0.99995194   +0 23 26.1
 DM3755;UTM  18      - 4,290,851.180   380,296.561   MT  0.99977645   -0 51 45.3
 DM3755
 DM3755!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DM3755!SPC MD       -   1.00000513  x   0.99995194  =   0.99995707
 DM3755!UTM  18      -   1.00000513  x   0.99977645  =   0.99978158
 DM3755
 DM3755_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8029690851(NAD 83)
 DM3755
 DM3755                          SUPERSEDED SURVEY CONTROL
 DM3755
 DM3755  NAD 83(2007)-  38 45 29.70821(N)    076 22 39.66190(W) AD(2002.00) B
 DM3755  ELLIP H (10/15/10)  -32.703  (m)                       GP(2002.00) 4 1
 DM3755
 DM3755.Superseded values are not recommended for survey control.
 DM3755
 DM3755.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DM3755.See file dsdata.pdf to determine how the superseded data were derived.
 DM3755
 DM3755_MARKER: DD = SURVEY DISK
 DM3755_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 DM3755+WITH SETTING: INFORMATION.
 DM3755_STAMPING: CM 3 2004
 DM3755_MARK LOGO: NONE
 DM3755_MAGNETIC: N = NO MAGNETIC MATERIAL
 DM3755_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DM3755_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DM3755+SATELLITE: SATELLITE OBSERVATIONS - July 13, 2010
 DM3755
 DM3755  HISTORY     - Date     Condition        Report By
 DM3755  HISTORY     - UNK      MONUMENTED
 DM3755  HISTORY     - 20100713 GOOD             USACE
 DM3755
 DM3755                          STATION DESCRIPTION
 DM3755
 DM3755'DESCRIBED BY US ARMY CORPS OF ENGINEERS 2010 (JC)
 DM3755'INDIVIDUAL USING THIS MARK WILL HAVE OBTAINED ACCESS AND SPECIFIC
 DM3755'LOCATION FROM THE CORPS OF ENGINEERS, BALTIMORE DISTRICT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DM3756 ***********************************************************************
 DM3756  HT_MOD      -  This is a Height Modernization Survey Station.
 DM3756  DESIGNATION -  CM 4
 DM3756  PID         -  DM3756
 DM3756  STATE/COUNTY-  MD/TALBOT
 DM3756  COUNTRY     -  US
 DM3756  USGS QUAD   -  DEALE OE E (2016)
 DM3756
 DM3756                         *CURRENT SURVEY CONTROL
 DM3756  ______________________________________________________________________
 DM3756* NAD 83(2011) POSITION- 38 45 11.95375(N) 076 22 48.14836(W)   ADJUSTED
 DM3756* NAD 83(2011) ELLIP HT-   -31.383 (meters)        (06/27/12)   ADJUSTED
 DM3756* NAD 83(2011) EPOCH   -  2010.00
 DM3756* NAVD 88 ORTHO HEIGHT -     2.58  (meters)        8.5   (feet) GPS OBS
 DM3756  ______________________________________________________________________
 DM3756  NAVD 88 orthometric height was determined with geoid model    GEOID09
 DM3756  GEOID HEIGHT    -        -33.922 (meters)                     GEOID09
 DM3756  GEOID HEIGHT    -        -33.970 (meters)                     GEOID18
 DM3756  NAD 83(2011) X  -  1,172,809.334 (meters)                     COMP
 DM3756  NAD 83(2011) Y  - -4,840,434.500 (meters)                     COMP
 DM3756  NAD 83(2011) Z  -  3,970,978.464 (meters)                     COMP
 DM3756  LAPLACE CORR    -         -5.30  (seconds)                    DEFLEC18
 DM3756
 DM3756  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DM3756  Standards:
 DM3756         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DM3756            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DM3756  -------------------------------------------------------------------
 DM3756  NETWORK    0.62   2.49           0.28   0.22   1.27     -0.07181723
 DM3756  -------------------------------------------------------------------
 DM3756  Click here for local accuracies and other accuracy information.
 DM3756
 DM3756.The horizontal coordinates were established by GPS observations
 DM3756.and adjusted by the National Geodetic Survey in June 2012.
 DM3756
 DM3756.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DM3756.been affixed to the stable North American tectonic plate. See 
 DM3756.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DM3756
 DM3756.The horizontal coordinates are valid at the epoch date displayed above
 DM3756.which is a decimal equivalence of Year/Month/Day.
 DM3756
 DM3756.The orthometric height was determined by GPS observations and a
 DM3756.high-resolution geoid model using precise GPS observation and
 DM3756.processing techniques.
 DM3756
 DM3756.Significant digits in the geoid height do not necessarily reflect accuracy.
 DM3756.GEOID18 height accuracy estimate available here.
 DM3756
 DM3756.Click photographs - Photos may exist for this station.
 DM3756
 DM3756.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DM3756
 DM3756.The Laplace correction was computed from DEFLEC18 derived deflections.
 DM3756
 DM3756.The ellipsoidal height was determined by GPS observations
 DM3756.and is referenced to NAD 83.
 DM3756
 DM3756. The following values were computed from the NAD 83(2011) position.
 DM3756
 DM3756;                    North         East     Units Scale Factor Converg.
 DM3756;SPC MD       -   120,805.878   453,887.784   MT  0.99995212   +0 23 20.8
 DM3756;SPC MD       -   396,343.95  1,489,130.17   sFT  0.99995212   +0 23 20.8
 DM3756;UTM  18      - 4,290,306.976   380,083.450   MT  0.99977708   -0 51 50.3
 DM3756
 DM3756!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DM3756!SPC MD       -   1.00000492  x   0.99995212  =   0.99995704
 DM3756!UTM  18      -   1.00000492  x   0.99977708  =   0.99978200
 DM3756
 DM3756_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8008390306(NAD 83)
 DM3756
 DM3756                          SUPERSEDED SURVEY CONTROL
 DM3756
 DM3756  NAD 83(2007)-  38 45 11.95398(N)    076 22 48.14937(W) AD(2002.00) B
 DM3756  ELLIP H (10/15/10)  -31.365  (m)                       GP(2002.00) 4 1
 DM3756
 DM3756.Superseded values are not recommended for survey control.
 DM3756
 DM3756.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DM3756.See file dsdata.pdf to determine how the superseded data were derived.
 DM3756
 DM3756_MARKER: DD = SURVEY DISK
 DM3756_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 DM3756+WITH SETTING: INFORMATION.
 DM3756_STAMPING: CM 4
 DM3756_MARK LOGO: USACE
 DM3756_MAGNETIC: N = NO MAGNETIC MATERIAL
 DM3756_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DM3756_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DM3756+SATELLITE: SATELLITE OBSERVATIONS - July 13, 2010
 DM3756
 DM3756  HISTORY     - Date     Condition        Report By
 DM3756  HISTORY     - UNK      MONUMENTED
 DM3756  HISTORY     - 20100713 GOOD             USACE
 DM3756
 DM3756                          STATION DESCRIPTION
 DM3756
 DM3756'DESCRIBED BY US ARMY CORPS OF ENGINEERS 2010 (JC)
 DM3756'INDIVIDUAL USING THIS MARK WILL HAVE OBTAINED ACCESS AND SPECIFIC
 DM3756'LOCATION FROM THE CORPS OF ENGINEERS, BALTIMORE DISTRICT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DM3757 ***********************************************************************
 DM3757  HT_MOD      -  This is a Height Modernization Survey Station.
 DM3757  DESIGNATION -  CM 5
 DM3757  PID         -  DM3757
 DM3757  STATE/COUNTY-  MD/TALBOT
 DM3757  COUNTRY     -  US
 DM3757  USGS QUAD   -  CLAIBORNE (2016)
 DM3757
 DM3757                         *CURRENT SURVEY CONTROL
 DM3757  ______________________________________________________________________
 DM3757* NAD 83(2011) POSITION- 38 45 10.32517(N) 076 22 24.48571(W)   ADJUSTED
 DM3757* NAD 83(2011) ELLIP HT-   -32.043 (meters)        (06/27/12)   ADJUSTED
 DM3757* NAD 83(2011) EPOCH   -  2010.00
 DM3757* NAVD 88 ORTHO HEIGHT -     1.94  (meters)        6.4   (feet) GPS OBS
 DM3757  ______________________________________________________________________
 DM3757  NAVD 88 orthometric height was determined with geoid model    GEOID09
 DM3757  GEOID HEIGHT    -        -33.941 (meters)                     GEOID09
 DM3757  GEOID HEIGHT    -        -33.989 (meters)                     GEOID18
 DM3757  NAD 83(2011) X  -  1,173,371.904 (meters)                     COMP
 DM3757  NAD 83(2011) Y  - -4,840,329.974 (meters)                     COMP
 DM3757  NAD 83(2011) Z  -  3,970,938.887 (meters)                     COMP
 DM3757  LAPLACE CORR    -         -5.33  (seconds)                    DEFLEC18
 DM3757
 DM3757  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DM3757  Standards:
 DM3757         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DM3757            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DM3757  -------------------------------------------------------------------
 DM3757  NETWORK    1.38   5.96           0.61   0.51   3.04      0.05001192
 DM3757  -------------------------------------------------------------------
 DM3757  Click here for local accuracies and other accuracy information.
 DM3757
 DM3757.The horizontal coordinates were established by GPS observations
 DM3757.and adjusted by the National Geodetic Survey in June 2012.
 DM3757
 DM3757.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DM3757.been affixed to the stable North American tectonic plate. See 
 DM3757.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DM3757
 DM3757.The horizontal coordinates are valid at the epoch date displayed above
 DM3757.which is a decimal equivalence of Year/Month/Day.
 DM3757
 DM3757.The orthometric height was determined by GPS observations and a
 DM3757.high-resolution geoid model using precise GPS observation and
 DM3757.processing techniques.
 DM3757
 DM3757.Significant digits in the geoid height do not necessarily reflect accuracy.
 DM3757.GEOID18 height accuracy estimate available here.
 DM3757
 DM3757.Click photographs - Photos may exist for this station.
 DM3757
 DM3757.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DM3757
 DM3757.The Laplace correction was computed from DEFLEC18 derived deflections.
 DM3757
 DM3757.The ellipsoidal height was determined by GPS observations
 DM3757.and is referenced to NAD 83.
 DM3757
 DM3757. The following values were computed from the NAD 83(2011) position.
 DM3757
 DM3757;                    North         East     Units Scale Factor Converg.
 DM3757;SPC MD       -   120,759.563   454,459.452   MT  0.99995214   +0 23 35.6
 DM3757;SPC MD       -   396,192.00  1,491,005.72   sFT  0.99995214   +0 23 35.6
 DM3757;UTM  18      - 4,290,248.180   380,653.867   MT  0.99977540   -0 51 35.4
 DM3757
 DM3757!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DM3757!SPC MD       -   1.00000503  x   0.99995214  =   0.99995717
 DM3757!UTM  18      -   1.00000503  x   0.99977540  =   0.99978043
 DM3757
 DM3757_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8065390248(NAD 83)
 DM3757
 DM3757                          SUPERSEDED SURVEY CONTROL
 DM3757
 DM3757  NAD 83(2007)-  38 45 10.32540(N)    076 22 24.48673(W) AD(2002.00) B
 DM3757  ELLIP H (10/15/10)  -32.024  (m)                       GP(2002.00) 4 1
 DM3757
 DM3757.Superseded values are not recommended for survey control.
 DM3757
 DM3757.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DM3757.See file dsdata.pdf to determine how the superseded data were derived.
 DM3757
 DM3757_MARKER: DD = SURVEY DISK
 DM3757_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 DM3757+WITH SETTING: INFORMATION.
 DM3757_STAMPING: CM 5
 DM3757_MARK LOGO: USACE
 DM3757_MAGNETIC: N = NO MAGNETIC MATERIAL
 DM3757_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DM3757_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DM3757+SATELLITE: SATELLITE OBSERVATIONS - July 13, 2010
 DM3757
 DM3757  HISTORY     - Date     Condition        Report By
 DM3757  HISTORY     - UNK      MONUMENTED
 DM3757  HISTORY     - 20100713 GOOD             USACE
 DM3757
 DM3757                          STATION DESCRIPTION
 DM3757
 DM3757'DESCRIBED BY US ARMY CORPS OF ENGINEERS 2010 (JC)
 DM3757'INDIVIDUAL USING THIS MARK WILL HAVE OBTAINED ACCESS AND SPECIFIC
 DM3757'LOCATION FROM THE CORPS OF ENGINEERS, BALTIMORE DISTRICT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DM3758 ***********************************************************************
 DM3758  HT_MOD      -  This is a Height Modernization Survey Station.
 DM3758  DESIGNATION -  CM 6
 DM3758  PID         -  DM3758
 DM3758  STATE/COUNTY-  MD/TALBOT
 DM3758  COUNTRY     -  US
 DM3758  USGS QUAD   -  TILGHMAN (2016)
 DM3758
 DM3758                         *CURRENT SURVEY CONTROL
 DM3758  ______________________________________________________________________
 DM3758* NAD 83(2011) POSITION- 38 44 37.11983(N) 076 22 27.53736(W)   ADJUSTED
 DM3758* NAD 83(2011) ELLIP HT-   -31.655 (meters)        (06/27/12)   ADJUSTED
 DM3758* NAD 83(2011) EPOCH   -  2010.00
 DM3758* NAVD 88 ORTHO HEIGHT -     2.34  (meters)        7.7   (feet) GPS OBS
 DM3758  ______________________________________________________________________
 DM3758  NAVD 88 orthometric height was determined with geoid model    GEOID09
 DM3758  GEOID HEIGHT    -        -33.960 (meters)                     GEOID09
 DM3758  GEOID HEIGHT    -        -34.006 (meters)                     GEOID18
 DM3758  NAD 83(2011) X  -  1,173,451.339 (meters)                     COMP
 DM3758  NAD 83(2011) Y  - -4,840,970.464 (meters)                     COMP
 DM3758  NAD 83(2011) Z  -  3,970,140.567 (meters)                     COMP
 DM3758  LAPLACE CORR    -         -5.35  (seconds)                    DEFLEC18
 DM3758
 DM3758  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DM3758  Standards:
 DM3758         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DM3758            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DM3758  -------------------------------------------------------------------
 DM3758  NETWORK    0.54   2.20           0.24   0.20   1.12     -0.07685798
 DM3758  -------------------------------------------------------------------
 DM3758  Click here for local accuracies and other accuracy information.
 DM3758
 DM3758.The horizontal coordinates were established by GPS observations
 DM3758.and adjusted by the National Geodetic Survey in June 2012.
 DM3758
 DM3758.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DM3758.been affixed to the stable North American tectonic plate. See 
 DM3758.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DM3758
 DM3758.The horizontal coordinates are valid at the epoch date displayed above
 DM3758.which is a decimal equivalence of Year/Month/Day.
 DM3758
 DM3758.The orthometric height was determined by GPS observations and a
 DM3758.high-resolution geoid model using precise GPS observation and
 DM3758.processing techniques.
 DM3758
 DM3758.Significant digits in the geoid height do not necessarily reflect accuracy.
 DM3758.GEOID18 height accuracy estimate available here.
 DM3758
 DM3758.Click photographs - Photos may exist for this station.
 DM3758
 DM3758.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DM3758
 DM3758.The Laplace correction was computed from DEFLEC18 derived deflections.
 DM3758
 DM3758.The ellipsoidal height was determined by GPS observations
 DM3758.and is referenced to NAD 83.
 DM3758
 DM3758. The following values were computed from the NAD 83(2011) position.
 DM3758
 DM3758;                    North         East     Units Scale Factor Converg.
 DM3758;SPC MD       -   119,735.200   454,392.788   MT  0.99995249   +0 23 33.7
 DM3758;SPC MD       -   392,831.24  1,490,787.01   sFT  0.99995249   +0 23 33.7
 DM3758;UTM  18      - 4,289,225.701   380,564.836   MT  0.99977566   -0 51 36.7
 DM3758
 DM3758!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DM3758!SPC MD       -   1.00000497  x   0.99995249  =   0.99995746
 DM3758!UTM  18      -   1.00000497  x   0.99977566  =   0.99978063
 DM3758
 DM3758_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8056489225(NAD 83)
 DM3758
 DM3758                          SUPERSEDED SURVEY CONTROL
 DM3758
 DM3758  NAD 83(2007)-  38 44 37.12006(N)    076 22 27.53837(W) AD(2002.00) B
 DM3758  ELLIP H (10/15/10)  -31.638  (m)                       GP(2002.00) 4 1
 DM3758
 DM3758.Superseded values are not recommended for survey control.
 DM3758
 DM3758.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DM3758.See file dsdata.pdf to determine how the superseded data were derived.
 DM3758
 DM3758_MARKER: DD = SURVEY DISK
 DM3758_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 DM3758+WITH SETTING: INFORMATION.
 DM3758_STAMPING: CM 6
 DM3758_MARK LOGO: USACE
 DM3758_MAGNETIC: N = NO MAGNETIC MATERIAL
 DM3758_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DM3758_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DM3758+SATELLITE: SATELLITE OBSERVATIONS - July 13, 2010
 DM3758
 DM3758  HISTORY     - Date     Condition        Report By
 DM3758  HISTORY     - UNK      MONUMENTED
 DM3758  HISTORY     - 20100713 GOOD             USACE
 DM3758
 DM3758                          STATION DESCRIPTION
 DM3758
 DM3758'DESCRIBED BY US ARMY CORPS OF ENGINEERS 2010 (JC)
 DM3758'INDIVIDUAL USING THIS MARK WILL HAVE OBTAINED ACCESS AND SPECIFIC
 DM3758'LOCATION FROM THE CORPS OF ENGINEERS, BALTIMORE DISTRICT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DM3760 ***********************************************************************
 DM3760  HT_MOD      -  This is a Height Modernization Survey Station.
 DM3760  DESIGNATION -  CM NORTH
 DM3760  PID         -  DM3760
 DM3760  STATE/COUNTY-  MD/TALBOT
 DM3760  COUNTRY     -  US
 DM3760  USGS QUAD   -  CLAIBORNE (2016)
 DM3760
 DM3760                         *CURRENT SURVEY CONTROL
 DM3760  ______________________________________________________________________
 DM3760* NAD 83(2011) POSITION- 38 46 50.33169(N) 076 22 20.71481(W)   ADJUSTED
 DM3760* NAD 83(2011) ELLIP HT-   -31.159 (meters)        (06/27/12)   ADJUSTED
 DM3760* NAD 83(2011) EPOCH   -  2010.00
 DM3760* NAVD 88 ORTHO HEIGHT -     2.76  (meters)        9.1   (feet) GPS OBS
 DM3760  ______________________________________________________________________
 DM3760  NAVD 88 orthometric height was determined with geoid model    GEOID09
 DM3760  GEOID HEIGHT    -        -33.884 (meters)                     GEOID09
 DM3760  GEOID HEIGHT    -        -33.936 (meters)                     GEOID18
 DM3760  NAD 83(2011) X  -  1,173,005.607 (meters)                     COMP
 DM3760  NAD 83(2011) Y  - -4,838,432.610 (meters)                     COMP
 DM3760  NAD 83(2011) Z  -  3,973,343.904 (meters)                     COMP
 DM3760  LAPLACE CORR    -         -5.25  (seconds)                    DEFLEC18
 DM3760
 DM3760  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DM3760  Standards:
 DM3760         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DM3760            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DM3760  -------------------------------------------------------------------
 DM3760  NETWORK    0.76   3.18           0.33   0.29   1.62      0.06907256
 DM3760  -------------------------------------------------------------------
 DM3760  Click here for local accuracies and other accuracy information.
 DM3760
 DM3760.The horizontal coordinates were established by GPS observations
 DM3760.and adjusted by the National Geodetic Survey in June 2012.
 DM3760
 DM3760.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DM3760.been affixed to the stable North American tectonic plate. See 
 DM3760.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DM3760
 DM3760.The horizontal coordinates are valid at the epoch date displayed above
 DM3760.which is a decimal equivalence of Year/Month/Day.
 DM3760
 DM3760.The orthometric height was determined by GPS observations and a
 DM3760.high-resolution geoid model using precise GPS observation and
 DM3760.processing techniques.
 DM3760
 DM3760.Significant digits in the geoid height do not necessarily reflect accuracy.
 DM3760.GEOID18 height accuracy estimate available here.
 DM3760
 DM3760.Click photographs - Photos may exist for this station.
 DM3760
 DM3760.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DM3760
 DM3760.The Laplace correction was computed from DEFLEC18 derived deflections.
 DM3760
 DM3760.The ellipsoidal height was determined by GPS observations
 DM3760.and is referenced to NAD 83.
 DM3760
 DM3760. The following values were computed from the NAD 83(2011) position.
 DM3760
 DM3760;                    North         East     Units Scale Factor Converg.
 DM3760;SPC MD       -   123,843.807   454,529.300   MT  0.99995122   +0 23 38.0
 DM3760;SPC MD       -   406,310.89  1,491,234.88   sFT  0.99995122   +0 23 38.0
 DM3760;UTM  18      - 4,293,329.615   380,791.136   MT  0.99977499   -0 51 34.9
 DM3760
 DM3760!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DM3760!SPC MD       -   1.00000489  x   0.99995122  =   0.99995611
 DM3760!UTM  18      -   1.00000489  x   0.99977499  =   0.99977988
 DM3760
 DM3760_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8079193329(NAD 83)
 DM3760
 DM3760                          SUPERSEDED SURVEY CONTROL
 DM3760
 DM3760  NAD 83(2007)-  38 46 50.33193(N)    076 22 20.71581(W) AD(2002.00) B
 DM3760  ELLIP H (10/15/10)  -31.142  (m)                       GP(2002.00) 4 1
 DM3760
 DM3760.Superseded values are not recommended for survey control.
 DM3760
 DM3760.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DM3760.See file dsdata.pdf to determine how the superseded data were derived.
 DM3760
 DM3760_MARKER: DD = SURVEY DISK
 DM3760_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 DM3760+WITH SETTING: INFORMATION.
 DM3760_STAMPING: CM NORTH
 DM3760_MARK LOGO: USACE
 DM3760_MAGNETIC: N = NO MAGNETIC MATERIAL
 DM3760_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DM3760_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DM3760+SATELLITE: SATELLITE OBSERVATIONS - July 13, 2010
 DM3760
 DM3760  HISTORY     - Date     Condition        Report By
 DM3760  HISTORY     - UNK      MONUMENTED
 DM3760  HISTORY     - 20100713 GOOD             USACE
 DM3760
 DM3760                          STATION DESCRIPTION
 DM3760
 DM3760'DESCRIBED BY US ARMY CORPS OF ENGINEERS 2010 (JC)
 DM3760'INDIVIDUAL USING THIS MARK WILL HAVE OBTAINED ACCESS AND SPECIFIC
 DM3760'LOCATION FROM THE CORPS OF ENGINEERS, BALTIMORE DISTRICT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6213 ***********************************************************************
 DN6213  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6213  DESIGNATION -  COACH
 DN6213  PID         -  DN6213
 DN6213  STATE/COUNTY-  MD/CECIL
 DN6213  COUNTRY     -  US
 DN6213  USGS QUAD   -  RISING SUN (2016)
 DN6213
 DN6213                         *CURRENT SURVEY CONTROL
 DN6213  ______________________________________________________________________
 DN6213* NAD 83(2011) POSITION- 39 41 45.41978(N) 076 06 18.65222(W)   ADJUSTED
 DN6213* NAD 83(2011) ELLIP HT-    54.708 (meters)        (06/27/12)   ADJUSTED
 DN6213* NAD 83(2011) EPOCH   -  2010.00
 DN6213* NAVD 88 ORTHO HEIGHT -    87.66  (meters)      287.6   (feet) GPS OBS
 DN6213  ______________________________________________________________________
 DN6213  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6213  GEOID HEIGHT    -        -32.929 (meters)                     GEOID03
 DN6213  GEOID HEIGHT    -        -32.957 (meters)                     GEOID18
 DN6213  NAD 83(2011) X  -  1,180,140.729 (meters)                     COMP
 DN6213  NAD 83(2011) Y  - -4,770,577.343 (meters)                     COMP
 DN6213  NAD 83(2011) Z  -  4,052,102.013 (meters)                     COMP
 DN6213  LAPLACE CORR    -         -0.91  (seconds)                    DEFLEC18
 DN6213
 DN6213  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6213  Standards:
 DN6213         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6213            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6213  -------------------------------------------------------------------
 DN6213  NETWORK    0.68   1.45           0.31   0.24   0.74     -0.01713062
 DN6213  -------------------------------------------------------------------
 DN6213  Click here for local accuracies and other accuracy information.
 DN6213
 DN6213.The horizontal coordinates were established by GPS observations
 DN6213.and adjusted by the National Geodetic Survey in June 2012.
 DN6213
 DN6213.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6213.been affixed to the stable North American tectonic plate. See 
 DN6213.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6213
 DN6213.The horizontal coordinates are valid at the epoch date displayed above
 DN6213.which is a decimal equivalence of Year/Month/Day.
 DN6213
 DN6213.The orthometric height was determined by GPS observations and a
 DN6213.high-resolution geoid model using precise GPS observation and
 DN6213.processing techniques.
 DN6213
 DN6213.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6213.GEOID18 height accuracy estimate available here.
 DN6213
 DN6213.Click photographs - Photos may exist for this station.
 DN6213
 DN6213.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6213
 DN6213.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6213
 DN6213.The ellipsoidal height was determined by GPS observations
 DN6213.and is referenced to NAD 83.
 DN6213
 DN6213. The following values were computed from the NAD 83(2011) position.
 DN6213
 DN6213;                    North         East     Units Scale Factor Converg.
 DN6213;SPC MD       -   225,647.446   476,752.642   MT  1.00005229   +0 33 41.8
 DN6213;SPC MD       -   740,311.66  1,564,145.96   sFT  1.00005229   +0 33 41.8
 DN6213;UTM  18      - 4,394,595.269   405,243.892   MT  0.99971054   -0 42 21.4
 DN6213
 DN6213!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6213!SPC MD       -   0.99999142  x   1.00005229  =   1.00004371
 DN6213!UTM  18      -   0.99999142  x   0.99971054  =   0.99970196
 DN6213
 DN6213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0524394595(NAD 83)
 DN6213
 DN6213                          SUPERSEDED SURVEY CONTROL
 DN6213
 DN6213  NAD 83(2007)-  39 41 45.41988(N)    076 06 18.65303(W) AD(2002.00) 1
 DN6213  ELLIP H (02/23/12)   54.731  (m)                       GP(2002.00) 4 1
 DN6213
 DN6213.Superseded values are not recommended for survey control.
 DN6213
 DN6213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6213.See file dsdata.pdf to determine how the superseded data were derived.
 DN6213
 DN6213_MARKER: DD = SURVEY DISK
 DN6213_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6213_STAMPING: COACH 2008
 DN6213_MARK LOGO: MD-015
 DN6213_PROJECTION: FLUSH
 DN6213_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6213_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6213+STABILITY: SURFACE MOTION
 DN6213_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6213+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6213
 DN6213  HISTORY     - Date     Condition        Report By
 DN6213  HISTORY     - 20081204 MONUMENTED       GWS
 DN6213  HISTORY     - 20250917 GOOD             PROFLN
 DN6213
 DN6213                          STATION DESCRIPTION
 DN6213
 DN6213'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6213'THE STATION IS LOCATED 2.3 MI (3.7 KM) WEST OF RISING SUN.
 DN6213'
 DN6213'TO REACH FROM THE JUNCTION OF MD 276 AND MD 273, GO WEST ON MD 273 FOR
 DN6213'0.58 MI (0.9 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO
 DN6213'NORTH-NORTHWEST ON AN ACCESS ROAD FOR 0.07 MI (0.1 KM) TO A
 DN6213'T-INTERSECTION.  TURN LEFT AND GO WEST-SOUTHWEST ON US-1 (CONOWINGO
 DN6213'RD) FOR 0.53 MI (0.9 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND
 DN6213'GO NORTH-NORTHWEST ON HORSESHOE ROAD FOR 0.31 MI (0.5 KM) TO A SIDE
 DN6213'ROAD ON THE LEFT.  TURN LEFT AND GO WEST-SOUTHWEST ON COACHMAN DR FOR
 DN6213'0.18 MI (0.3 KM) TO THE STATION ON THE LEFT, JUST PRIOR TO DALMATION
 DN6213'COURT.
 DN6213'
 DN6213'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6213'CONCRETE MONUMENT ON THE EAST SIDE OF COACHMAN DRIVE AT 16 DALMATION
 DN6213'COURT, 3.8 FT (1.2 M) EAST OF THE EDGE OF PAVING OF COACHMAN DRIVE,
 DN6213'74.2 FT (22.6 M) NORTHWEST OF THE WEST CORNER OF THE PORCH AT 16
 DN6213'DALMATION COURT AND 70 FT (21.3 M) SOUTHEAST OF THE SOUTHERN EDGE OF
 DN6213'THE DRIVEWAY TO 77 COACHMAN DRIVE.
 DN6213
 DN6213                          STATION RECOVERY (2025)
 DN6213
 DN6213'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6213'THE MARK IS ACROSS COACHMAN DRIVE FROM HOUSE 77 - TWO STORY RED BRICK
 DN6213'AND WHITE VINYL SIDING - 9 FT (2.7 M) SOUTH OF THE NORTH LINE EXTENDED
 DN6213'OF THAT HOUSE, 165 FT (50.3 M) NORTH OF DALMATION COURT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7951 ***********************************************************************
 DH7951  DESIGNATION -  COAST GUARD
 DH7951  PID         -  DH7951
 DH7951  STATE/COUNTY-  MD/SOMERSET
 DH7951  COUNTRY     -  US
 DH7951  USGS QUAD   -  CRISFIELD (2016)
 DH7951
 DH7951                         *CURRENT SURVEY CONTROL
 DH7951  ______________________________________________________________________
 DH7951* NAD 83(1986) POSITION- 37 59 05.8    (N) 075 50 34.9    (W)   HD_HELD2
 DH7951* NAVD 88 ORTHO HEIGHT -     0.742 (meters)        2.43  (feet) ADJUSTED
 DH7951  ______________________________________________________________________
 DH7951  GEOID HEIGHT    -        -36.097 (meters)                     GEOID18
 DH7951  DYNAMIC HEIGHT  -          0.741 (meters)        2.43  (feet) COMP
 DH7951  MODELED GRAVITY -    979,972.2   (mgal)                       NAVD 88
 DH7951
 DH7951  VERT ORDER      -  SECOND    CLASS I
 DH7951
 DH7951.The horizontal coordinates were established by autonomous hand held GPS
 DH7951.observations and have an estimated accuracy of +/- 10 meters.
 DH7951
 DH7951.The orthometric height was determined by differential leveling and
 DH7951.adjusted by the NATIONAL GEODETIC SURVEY
 DH7951.in February 2006.
 DH7951
 DH7951.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7951.GEOID18 height accuracy estimate available here.
 DH7951
 DH7951.Click photographs - Photos may exist for this station.
 DH7951
 DH7951.The dynamic height is computed by dividing the NAVD 88
 DH7951.geopotential number by the normal gravity value computed on the
 DH7951.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7951.degrees latitude (g = 980.6199 gals.).
 DH7951
 DH7951.The modeled gravity was interpolated from observed gravity values.
 DH7951
 DH7951;                    North         East    Units  Estimated Accuracy
 DH7951;SPC MD       -    35,975.      501,645.      MT  (+/- 10 meters HH2 GPS)
 DH7951
 DH7951_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2596804479(NAD 83)
 DH7951
 DH7951                          SUPERSEDED SURVEY CONTROL
 DH7951
 DH7951.No superseded survey control is available for this station.
 DH7951
 DH7951_MARKER: DD = SURVEY DISK
 DH7951_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DH7951_MARK LOGO: USCG
 DH7951_MAGNETIC: N = NO MAGNETIC MATERIAL
 DH7951_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DH7951+STABILITY: SURFACE MOTION
 DH7951_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7951+SATELLITE: SATELLITE OBSERVATIONS - September 27, 2021
 DH7951
 DH7951  HISTORY     - Date     Condition        Report By
 DH7951  HISTORY     - UNK      MONUMENTED       NONE
 DH7951  HISTORY     - 20051026 GOOD             NGS
 DH7951  HISTORY     - 20210927 GOOD             PROFLN
 DH7951
 DH7951                          STATION DESCRIPTION
 DH7951
 DH7951'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DH7951'THE STATION IS LOCATED ABOUT 5.5 MI (8.85 KM) SOUTHWEST OF MARION, 2.3
 DH7951'MI (3.7 KM) SOUTHWEST OF HOPEWELL AND 0.6 MI (0.97 KM) EAST-NORTHEAST
 DH7951'OF CRISFIELD.
 DH7951'TO REACH THE STATION FROM THE JUNCTION OF MARYLAND AVENUE, RICHERSON
 DH7951'AVENUE, JACKSONVILLE ROAD AND SOMERSET AVENUE NEAR THE NORTH CITY
 DH7951'WATER TANK.  GO 0.3 MI (0.48 KM) SOUTHWEST ALONG SOMERSET AVENUE TO
 DH7951'THE JUNCTION OF DENNIS LANE ON THE LEFT, TURN LEFT SOUTHEAST FOR 0.05
 DH7951'MI (0.08 KM) ON DENNIS LANE TO ITS END AT HOUSE 199 MR PHILIP
 DH7951'GOLDSBOROUGH RESIDENCE, CONTINUE ON FOOT TO THE SOUTH CORNER OF MR
 DH7951'GOLDSBOROUGH PROPERTY.  THE STATION IS LOCATED NEAR THE SOUTH CORNER
 DH7951'OF THE PROPERTY AND NEAR A SMALL CONCRETE POST 2X2 INCH (5 CM)
 DH7951'PROPERTY MARKER STAMPED 8446.  THE STATION IS A 4X4 INCH (10 CM)
 DH7951'CONCRETE POST WITH A 4 INCH (10 CM) US COAST GUARD DISK UNSTAMPED.
 DH7951'14.7 FT (4.5 M) OF THE SOUTH CORNER OF A FRAME STORAGE SHED. 75.3 FT
 DH7951'(23.0 M) SOUTH OF THE EAST CORNER OF THE HOUSE.  4.0 FT (1.2 M) WEST
 DH7951'OF PROPERTY MARKER 8446.  45.7 FT (2588.3 M) SOUTH OF SOUTH CORNER OF
 DH7951'A CONCRETE PAD SUPPORTING A SATELLITE DISH.  49.0 FT (14.9 M)
 DH7951'SOUTHWEST OF THE EXTENDED CENTERLINE OF DENNIS LANE, 0.5 FT (0.2 M)
 DH7951'SOUTH SOUTHWEST OF A FIBERGLASS WITNESS POST.
 DH7951
 DH7951                          STATION RECOVERY (2021)
 DH7951
 DH7951'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 DH7951'RECOVERED AS DESCRIBED WITH MR. GOLDSBOROUGH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7048 ***********************************************************************
 HV7048  DESIGNATION -  COBB
 HV7048  PID         -  HV7048
 HV7048  STATE/COUNTY-  MD/CHARLES
 HV7048  COUNTRY     -  US
 HV7048  USGS QUAD   -  ROCK POINT (2016)
 HV7048
 HV7048                         *CURRENT SURVEY CONTROL
 HV7048  ______________________________________________________________________
 HV7048* NAD 83(1993) POSITION- 38 15 21.80356(N) 076 50 45.62483(W)   ADJUSTED
 HV7048* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7048  ______________________________________________________________________
 HV7048  GEOID HEIGHT    -        -33.683 (meters)                     GEOID18
 HV7048  LAPLACE CORR    -         -0.83  (seconds)                    DEFLEC18
 HV7048  HORZ ORDER      -  SECOND
 HV7048
 HV7048.The horizontal coordinates were established by classical geodetic methods
 HV7048.and adjusted by the National Geodetic Survey in November 1994.
 HV7048
 HV7048.The orthometric height was scaled from a topographic map.
 HV7048
 HV7048.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7048.GEOID18 height accuracy estimate available here.
 HV7048
 HV7048.Click photographs - Photos may exist for this station.
 HV7048
 HV7048.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7048
 HV7048. The following values were computed from the NAD 83(1993) position.
 HV7048
 HV7048;                    North         East     Units Scale Factor Converg.
 HV7048;SPC MD       -    65,436.404   413,478.529   MT  1.00000794   +0 05 47.9
 HV7048;SPC MD       -   214,685.94  1,356,554.14   sFT  1.00000794   +0 05 47.9
 HV7048;SPC VA N     - 2,066,724.986 3,644,755.266   MT  0.99996816   +1 01 56.2
 HV7048;SPC VA N     - 6,780,580.22 11,957,834.57   sFT  0.99996816   +1 01 56.2
 HV7048;UTM  18      - 4,235,837.016   338,484.102   MT  0.99992129   -1 08 35.7
 HV7048
 HV7048!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7048!SPC MD       -   1.00000533  x   1.00000794  =   1.00001327
 HV7048!SPC VA N     -   1.00000533  x   0.99996816  =   0.99997349
 HV7048!UTM  18      -   1.00000533  x   0.99992129  =   0.99992662
 HV7048
 HV7048:                Primary Azimuth Mark                     Grid Az
 HV7048:SPC MD       -  BLAKISTON ISLAND LH 1860                 121 15 26.5
 HV7048:SPC VA N     -  BLAKISTON ISLAND LH 1860                 120 19 18.2
 HV7048:UTM  18      -  BLAKISTON ISLAND LH 1860                 122 29 50.1
 HV7048
 HV7048_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3848435837(NAD 83)
 HV7048
 HV7048|---------------------------------------------------------------------|
 HV7048| PID    Reference Object                     Distance      Geod. Az  |
 HV7048|                                                           dddmmss.s |
 HV7048| CX2623 COBB RM 2                            19.370 METERS 04841     |
 HV7048| HV6945 BLAKISTON ISLAND LH 1860            APPROX.10.4 KM 1212114.4 |
 HV7048| CX2622 COBB RM 1                            20.252 METERS 33507     |
 HV7048|---------------------------------------------------------------------|
 HV7048
 HV7048                          SUPERSEDED SURVEY CONTROL
 HV7048
 HV7048  NAD 83(1991)-  38 15 21.80282(N)    076 50 45.63101(W) AD(       ) 2
 HV7048  NAD 83(1986)-  38 15 21.80351(N)    076 50 45.64074(W) AD(       ) 2
 HV7048  NAD 27      -  38 15 21.33900(N)    076 50 46.74600(W) AD(       ) 2
 HV7048
 HV7048.Superseded values are not recommended for survey control.
 HV7048
 HV7048.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7048.See file dsdata.pdf to determine how the superseded data were derived.
 HV7048
 HV7048_MARKER: DS = TRIANGULATION STATION DISK
 HV7048_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7048_STAMPING: COBB 1929
 HV7048_MARK LOGO: CGS
 HV7048_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7048+STABILITY: SURFACE MOTION
 HV7048
 HV7048  HISTORY     - Date     Condition        Report By
 HV7048  HISTORY     - 1929     MONUMENTED       CGS
 HV7048  HISTORY     - 1929     GOOD             CGS
 HV7048  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV7048  HISTORY     - 1973     MARK NOT FOUND   NGS
 HV7048
 HV7048                          STATION DESCRIPTION
 HV7048
 HV7048'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (FLP)
 HV7048'STATION IS ON THE N SHORE OF THE POTOMAC RIVER, ON COBB ISLAND
 HV7048'NEAR THE WICOMICO RIVER.  STATION IS ABOUT 780 YARDS WNW OF COBB
 HV7048'POINT, 12 FEET FROM THE HIGHWATER LINE, AND 42 FEET FROM A BLUFF
 HV7048'THAT RISES TO A HEIGHT OF 8 FEET.  THE STATION IS LOCATED ON SANDY
 HV7048'SOIL, GROWN OVER BY TALL MARSH GRASS.  JUST S OF THE STATION THERE
 HV7048'ARE SEVERAL CLUMPS OF BUSHES.  BACK OF THE STATION, ALONG THE
 HV7048'BLUFF, AND JUST IN FRONT OF THE BLUFF, THERE IS A FAIRLY HEAVY
 HV7048'GROWTH OF SECOND-GROWTH PINE TREES.  THE STATION IS ABOUT 80 YARDS
 HV7048'ESE OF THE POINT WHERE THE BLUFF EXTENDS DOWN TO THE HIGH-WATER
 HV7048'LINE. DUE TO THE FACT THAT THE STATION IS LOCATED ON SANDY SOIL,
 HV7048'THERE WAS SET AN ESPECIALLY HEAVY MARK.
 HV7048'
 HV7048'THE STATION IS MARKED, AS DESCRIBED, WITH A U.S.C. AND G.S.
 HV7048'STANDARD DISK SET IN AN IRREGULAR MASS OF CONCRETE AS FOLLOWS--18
 HV7048'INCHES SQUARE ON TOP TO A DEPTH OF 4 INCHES, THEN APPROXIMATELY 2
 HV7048'FEET IN DIAMETER TO A DEPTH OF ABOUT 30 INCHES, AND BELLED ON THE
 HV7048'BOTTOM. THE MARK EXTENDS ABOUT 2 INCHES ABOVE THE SURFACE.
 HV7048'
 HV7048'REFERENCE MARK NO. 1 IS MARKED, AS DESCRIBED BY A STANDARD DISK,
 HV7048'SET IN AN IRREGULAR MASS OF CONCRETE, AS FOLLOWS--6 INCHES SQUARE
 HV7048'ON THE TOP, TO A DEPTH OF 4 INCHES, THENCE APPROXIMATELY
 HV7048'CYLINDRICAL AND 12 INCHES IN DIAMETER TO A DEPTH OF ABOUT 30
 HV7048'INCHES, AND BELLED AT THE BOTTOM.  IT IS SET ON TOP OF THE BLUFF,
 HV7048'4 FEET FROM THE FACE, AND ON THE LEFT OF THE FOOTPATH THAT RUNS
 HV7048'ALONG THE FACE OF THE BLUFF.  IT IS SET IN HEAVY, WELL COMPACTED
 HV7048'CLAY SOIL, AND IS SET SO THAT THE STATION, THE REFERENCE MARK, AND
 HV7048'THE NW CORNER OF THE HOUSE JUST TO THE BACK OF THE REFERENCE MARK
 HV7048'ARE IN RANGE.
 HV7048'
 HV7048'REFERENCE MARK NO. 2 IS SET ON TOP OF THE BLUFF, AND 6 FEET BACK
 HV7048'FROM THE FACE OF THE BLUFF, MARKED, AS DESCRIBED BY A STANDARD
 HV7048'REFERENCE MARK DISK AND SET IN THE SAME MANNER AS REFERENCE MARK
 HV7048'NO. 1.
 HV7048'
 HV7048'REFERENCE MARK NO. 1 IS STENCILED COBB NO. 1 1929, AND NO. 2 IS
 HV7048'STENCILED COBB NO. 2 1929.
 HV7048'
 HV7048'DISTANCES TO REFERENCE MARKS ARE MEASURED HORIZONTALLY.  BOTH
 HV7048'REFERENCE MARKS ARE APPROXIMATELY 8-1/2 FEET HIGHER THAN THE
 HV7048'STATION MARK.
 HV7048'
 HV7048'HEIGHT OF SIGNAL ABOVE STATION MARK - 4.0 METERS.
 HV7048
 HV7048                          STATION RECOVERY (1929)
 HV7048
 HV7048'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (EBL)
 HV7048'THE STATION WAS RECOVERED ACCORDING TO THE ORIGINAL DESCRIPTION.
 HV7048'THE DESCRIPTION IS ADEQUATE, EXCEPT FOR THE FOLLOWING FACTS.
 HV7048'
 HV7048'TWO NEW HOUSES HAVE BEEN BUILT BETWEEN REFERENCE MARKS NO. 1 AND
 HV7048'2, SO THAT REFERENCE MARK NO. 2 IS NOW 7 YARDS SXE OF THE SE
 HV7048'CORNER OF THE MOST EASTERLY HOUSE ON THE ISLAND.  THE DIRT HAS
 HV7048'BEEN WASHED AROUND THE MARKS SO THAT BOTH REFERENCE MARKS NO. 1
 HV7048'AND 2 ARE NOW FLUSH WITH THE GROUND.
 HV7048
 HV7048                          STATION RECOVERY (1942)
 HV7048
 HV7048'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7048'STATION FOUND DESTROYED.  REFERENCE MARK NO. 1 COULD NOT BE FOUND.
 HV7048'REFERENCE MARK NO. 2 WAS RECOVERED AS DESCRIBED WITH THE FOLLOWING
 HV7048'EXCEPTION NOTED BELOW--
 HV7048'
 HV7048'REFERENCE MARK NO. 2 IS 3 FEET BACK FROM FACE OF BLUFF, NOT 6 FEET.
 HV7048
 HV7048                          STATION RECOVERY (1973)
 HV7048
 HV7048'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (LFS)
 HV7048'THE STATION MARK, REFERENCE MARK 1 AND REFERENCE MARK 2 WERE
 HV7048'SEARCHED FOR.  THE STATION MARK IS NOW IN DEEP WATER.  REFERENCE
 HV7048'MARK 1 WAS NOT FOUND.  THE STATION IS DESTROYED AND REFERENCE MARK
 HV7048'1 IS BELIEVED DESTROYED.  REFERENCE MARK 2 WAS RECOVERED AND
 HV7048'FOUND IN GOOD CONDITION.  IT WAS INTERSECTED FROM TRIANGULATION
 HV7048'STATION COBB 3 (B OF O) 1954.  SEE DESCRIPTION THEREOF.
 HV7048'
 HV7048'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--ON COBB ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7046 ***********************************************************************
 HV7046  DESIGNATION -  COBB 3
 HV7046  PID         -  HV7046
 HV7046  STATE/COUNTY-  MD/CHARLES
 HV7046  COUNTRY     -  US
 HV7046  USGS QUAD   -  ROCK POINT (2016)
 HV7046
 HV7046                         *CURRENT SURVEY CONTROL
 HV7046  ______________________________________________________________________
 HV7046* NAD 83(1993) POSITION- 38 15 21.41854(N) 076 50 43.36293(W)   ADJUSTED
 HV7046* NAVD 88 ORTHO HEIGHT -    -0.1   (meters)       -0.    (feet) VERTCON3
 HV7046  ______________________________________________________________________
 HV7046  GEOID HEIGHT    -        -33.683 (meters)                     GEOID18
 HV7046  LAPLACE CORR    -         -0.82  (seconds)                    DEFLEC18
 HV7046  HORZ ORDER      -  FIRST
 HV7046
 HV7046.The horizontal coordinates were established by classical geodetic methods
 HV7046.and adjusted by the National Geodetic Survey in November 1994.
 HV7046
 HV7046.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7046.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7046
 HV7046.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7046.GEOID18 height accuracy estimate available here.
 HV7046
 HV7046.Click photographs - Photos may exist for this station.
 HV7046
 HV7046.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7046
 HV7046. The following values were computed from the NAD 83(1993) position.
 HV7046
 HV7046;                    North         East     Units Scale Factor Converg.
 HV7046;SPC MD       -    65,424.625   413,533.543   MT  1.00000796   +0 05 49.4
 HV7046;SPC MD       -   214,647.29  1,356,734.63   sFT  1.00000796   +0 05 49.4
 HV7046;SPC VA N     - 2,066,714.107 3,644,810.462   MT  0.99996818   +1 01 57.6
 HV7046;SPC VA N     - 6,780,544.53 11,958,015.66   sFT  0.99996818   +1 01 57.6
 HV7046;UTM  18      - 4,235,824.051   338,538.844   MT  0.99992107   -1 08 34.3
 HV7046
 HV7046!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7046!SPC MD       -   1.00000529  x   1.00000796  =   1.00001325
 HV7046!SPC VA N     -   1.00000529  x   0.99996818  =   0.99997347
 HV7046!UTM  18      -   1.00000529  x   0.99992107  =   0.99992636
 HV7046
 HV7046:                Primary Azimuth Mark                     Grid Az
 HV7046:SPC MD       -  COBB POINT BAR LIGHT                     132 01 08.7
 HV7046:SPC VA N     -  COBB POINT BAR LIGHT                     131 05 00.5
 HV7046:UTM  18      -  COBB POINT BAR LIGHT                     133 15 32.4
 HV7046
 HV7046_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3853835824(NAD 83)
 HV7046
 HV7046|---------------------------------------------------------------------|
 HV7046| PID    Reference Object                     Distance      Geod. Az  |
 HV7046|                                                           dddmmss.s |
 HV7046| CX2624 COBB 3 RM 1                          11.739 METERS 00626     |
 HV7046| CX2625 COBB 3 RM 2                          22.509 METERS 06515     |
 HV7046| HV7000 COBB POINT BAR LIGHT                APPROX. 2.2 KM 1320658.1 |
 HV7046| HV7030 POTOMAC MILLS ATT TOWER             APPROX.13.3 KM 2071946.8 |
 HV7046| HV7068 COLONIAL BEACH N TANK               APPROX.10.6 KM 2673226.8 |
 HV7046| CX2623 COBB RM 2                            42.229 METERS 30126     |
 HV7046|---------------------------------------------------------------------|
 HV7046
 HV7046                          SUPERSEDED SURVEY CONTROL
 HV7046
 HV7046  NAD 83(1991)-  38 15 21.41764(N)    076 50 43.36833(W) AD(       ) 1
 HV7046  NAD 83(1986)-  38 15 21.41878(N)    076 50 43.37857(W) AD(       ) 1
 HV7046  NAD 27      -  38 15 20.95600(N)    076 50 44.49200(W) AD(       ) 1
 HV7046  NGVD 29 (07/19/86)    0.2    (m)            1.     (f) VERT ANG       
 HV7046
 HV7046.Superseded values are not recommended for survey control.
 HV7046
 HV7046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7046.See file dsdata.pdf to determine how the superseded data were derived.
 HV7046
 HV7046_MARKER: DD = SURVEY DISK
 HV7046_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7046_STAMPING: COBB 3 1961
 HV7046_MARK LOGO: USN
 HV7046_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7046+STABILITY: SURFACE MOTION
 HV7046
 HV7046  HISTORY     - Date     Condition        Report By
 HV7046  HISTORY     - 1954     MONUMENTED       USN
 HV7046  HISTORY     - 1959     GOOD             CGS
 HV7046  HISTORY     - 1960     GOOD             CGS
 HV7046  HISTORY     - 1973     GOOD             NGS
 HV7046  HISTORY     - 1974     GOOD             NGS
 HV7046  HISTORY     - 1981     GOOD             USACE
 HV7046
 HV7046                          STATION DESCRIPTION
 HV7046
 HV7046'DESCRIBED BY US NAVY 1954 (DAJ)
 HV7046'STATION IS LOCATED ON THE SOUTH SIDE OF COBB ISLAND AND NEAR THE
 HV7046'EAST END OF ISLAND.  STATION IS 43 FEET NORTH OF THE NORTH BANK OF
 HV7046'THE POTOMAC RIVER AND 28 FEET WEST OF THE APPROXIMATE CENTER OF
 HV7046'DIRT STREET.  THE MARK WHICH IS SET FLUSH WITH THE SURFACE, IS A
 HV7046'CONCRETE BLOCK WITH A BUREAU OF ORDNANCE U.S. NAVY DEPARTMENT DISK
 HV7046'AND IS STAMPED COBB 3 1961.
 HV7046'
 HV7046'REFERENCE MARK NO. 1 IS 42 FEET WEST OF THE APPROXIMATE CENTER OF
 HV7046'STREET.  THE MARK IS FLUSH WITH THE SURFACE AND THE DISK IS
 HV7046'STAMPED COBB 3 NO 1, 1954.
 HV7046'
 HV7046'REFERENCE MARK NO. 2 IS 18 FEET EAST OF THE CENTERLINE OF STREET
 HV7046'AND 6 FEET WEST OF FENCE.  THE MARK PROJECTS ABOUT 6 INCHES AND
 HV7046'THE DISK IS STAMPED COBB 3 NO 2 1954.
 HV7046'
 HV7046'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY 301 AND STATE ROUTE 3,
 HV7046'ABOUT 2 MILES NORTH OF THE POTOMAC RIVER TOLL BRIDGE, GO
 HV7046'SOUTHWESTERLY ON STATE ROUTE 3 FOR 9.7 MILES TO JUNCTION OF COUNTY
 HV7046'ROUTE 533.  TURN RIGHT ON COUNTY ROUTE 533 AND GO SOUTHERLY FOR
 HV7046'1.4 MILES TO T INTERSECTION NEAR EDGE OF RIVER.  TURN LEFT AND GO
 HV7046'EAST FOR 0.4 MILE TO CROSS STREET.  TURN RIGHT AND GO SOUTH ON
 HV7046'DIRT STREET FOR 0.05 MILE TO END OF STREET AT WATERS EDGE AND
 HV7046'STATION ON RIGHT OR WEST SIDE OF STREET AS DESCRIBED.
 HV7046'
 HV7046'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV7046
 HV7046                          STATION RECOVERY (1959)
 HV7046
 HV7046'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV7046'STATION AND BOTH R.M.S RECOVERED AS DESCRIBED AND IN GOOD
 HV7046'CONDITION.  DUE TO CHANGES IN THE AREA A NEW DESCRIPTION FOLLOWS.
 HV7046'
 HV7046'STATION LOCATED ON THE SOUTH SIDE AND NEAR THE EAST END OF COBB
 HV7046'ISLAND.  IT IS INSHORE FROM THE LAST GROUP OF PIERS LEADING OUT
 HV7046'FROM THE ISLAND AND ALSO INSHORE FROM THE ONLY BOATHOUSE ON THE
 HV7046'SOUTHEAST END OF COBB ISLAND.  STATION IS ABOUT 25 METERS NNE OF
 HV7046'THE BOATHOUSE.  STATION IS IN A GRASSY AREA THAT IS ABOUT 4 FEET
 HV7046'ABOVE THE RIVER LEVEL AND 42 FEET NORTH OF PILED PIECES OF
 HV7046'CONCRETE SLABS THAT ACT AS A BREAKWATER AT THE RIVERS EDGE.  THE
 HV7046'DIRT ROAD MENTIONED IN THE ORIGINAL DESCRIPTION NO LONGER EXTENDS
 HV7046'TO THE RIVER, AS THE AREA ALONG THE RIVER IS NOW GRASSY WITH A FEW
 HV7046'SMALL BUSHES AND TREES.  THE DIRT ROAD ENDS ABOUT 30 METERS FROM
 HV7046'THE WATERS EDGE AND THE HOUSE JUST EAST OF THE EDGE OF THE DIRT
 HV7046'ROAD IS THE TWO-STORY SUMMER COTTAGE TACCMA.  (THESE LETTERS ARE
 HV7046'CARVED IN THE FACING ABOVE THE DOOR ON THE SOUTH END OF THE
 HV7046'HOUSE.) AN OUTDOOR RED BRICK FIREPLACE AND A WOODEN FLAGPOLE,
 HV7046'PAINTED WHITE, ARE AT THE SOUTHWEST CORNER OF A WIRE FENCE THAT
 HV7046'RUNS ALONG THE WEST SIDE OF THE BACKYARD AT TACCMA.  STATION IS 34
 HV7046'FEET WEST OF THE EXTENSION OF THE CENTER OF THE DIRT ROAD AND IS
 HV7046'COVERED ABOUT TWO INCHES BY DIRT AND GRASS.  THE BUREAU OF
 HV7046'ORDNANCE, U.S. NAVY DEPT. DISC SET IN THE TOP OF THE CONCRETE
 HV7046'BLOCK IS STAMPED COBB 3 1951.
 HV7046'
 HV7046'R.M. NO. 1 IS ABOUT HALF-WAY UP A SLOPING EMBANKMENT ABOUT 5 FEET
 HV7046'HIGH JUST NORTH OF THE STATION.  IT IS 2 FEET SOUTHWEST OF A TRAIL
 HV7046'LEADING TO THE HOUSE WEST OF THE STATION FROM THE DIRT ROAD, 44
 HV7046'FEET WEST OF THE EXTENSION OF THE CENTER OF THE DIRT ROAD, AND
 HV7046'DIRECTLY INSHORE FROM THE BOATHOUSE.  MONUMENT, IS COVERED BY
 HV7046'GRASS AND PINE NEEDLES AND THE DISC IS STAMPED COBB 3 NO 1 1954.
 HV7046'
 HV7046'R.M. NO. 2 IS LOCATED NORTHEAST OF THE STATION IN A HONEYSUCKLE
 HV7046'CLUMP AT END OF THE FENCE ON WEST SIDE OF TACCMA, 12 FEET
 HV7046'SOUTHWEST OF OUTDOOR RED BRICK FIREPLACE CHIMNEY AND 9 FEET WEST
 HV7046'OF THE WHITE WOODEN FLAGPOLE.  IT IS 15 FEET EAST OF THE
 HV7046'EXTENSION OF THE CENTER OF THE DIRT ROAD AND 6 FEET WEST OF THE
 HV7046'WIRE FENCE. MONUMENT PROJECTS 4 INCHES AND THE DISC IS STAMPED
 HV7046'COBB 3 NO 2 1954.  NOTE--ORIGINAL DISTANCE TO THIS MARK WAS
 HV7046'CHECKED AS SLOPE DISTANCE EVEN THOUGH IT IS NOT SHOWN AS SUCH IN
 HV7046'THE BOX-SCORE OF THE ORIGINAL DESCRIPTION.
 HV7046'
 HV7046'THE MEASUREMENTS WERE MADE AT THIS TIME WITH A GROUND SET-UP.
 HV7046
 HV7046                          STATION RECOVERY (1960)
 HV7046
 HV7046'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (WER)
 HV7046'THE STATION, REFERENCE MARK NOS. 1 AND 2, AND REFERENCE MARK NO. 2
 HV7046'1929 WERE RECOVERED IN GOOD CONDITION.
 HV7046'
 HV7046'A NEW DESCRIPTION FOLLOWS--
 HV7046'
 HV7046'STATION IS LOCATED ON SOUTH SIDE OF COBB ISLAND AND NEAR THE EAST
 HV7046'END OF ISLAND.  STATION IS 43 FEET NORTH OF THE NORTH BANK OF THE
 HV7046'POTOMAC RIVER, 28 FEET WEST OF THE END AND APPROXIMATE CENTER OF A
 HV7046'DIRT STREET, 104 FEET NORTH OF THE T IN THE T SHAPED PIAR OFF THE
 HV7046'END OF THE STREET.  THE MARK, WHICH IS SET FLUSH WITH THE
 HV7046'SURFACE, IS A CONCRETE BLOCK WITH A BUREAU OF ORDNANCE U. S. NAVY
 HV7046'DEPARTMENT DISK AND IS STAMPED COBB 3 1951.
 HV7046'
 HV7046'REFERENCE MARK NO. 1 IS 42 FEET WEST OF APPROXIMATE CENTER OF
 HV7046'STREET ON A GENTLE GRASSY SLOPE.  THE MARK IS FLUSH WITH THE
 HV7046'SURFACE AND THE DISK IS STAMPED COBB 3 NO. 1 1954.
 HV7046'
 HV7046'REFERENCE MARK NO. 2 IS 18 FEET EAST OF THE CENTERLINE OF THE
 HV7046'STREET, 6 FEET WEST OF A YARD FENCE, AND 2 FEET NORTHEAST OF A
 HV7046'SMALL PINE. THE MARK PROJECTS ABOUT 6 INCHES AND THE DISK IS
 HV7046'STAMPED COBB 3 NO. 2 1954.
 HV7046'
 HV7046'REFERENCE MARK NO. 2 1929 IS ABOUT 160 FEET NORTHWEST OF COBB 3,
 HV7046'1954.  NO DIRECTION NOR DISTANCE WAS MEASURED BECAUSE OF
 HV7046'INTERVENING SHRUBBERY.
 HV7046'
 HV7046'TO REACH FROM JUNCTION OF U. S. HIGHWAY 301 AND STATE ROUTE 257,
 HV7046'ABOUT 2 MILES NORTH EAST OF POTOMAC RIVER TOLL BRIDGE, TURN RIGHT
 HV7046'(SOUTHEASTERLY) ON ROUTE 257 FOR 9.8 MILES TO JUNCTION OF ROUTE
 HV7046'256.  TURN RIGHT ON ROUTE 256 AND GO SOUTHERLY FOR 1.4 MILES TO T
 HV7046'INTERSECTION NEAR EDGE OF RIVER.  TURN LEFT ON CRANE BLVD. AND GO
 HV7046'EAST FOR 0.4 MILES TO CROSS STREET, TURN RIGHT AND GO SOUTH ON
 HV7046'DIRT STREET FOR 0.05 MILES TO END OF STREET AT WATERS EDGE AND
 HV7046'STATION ON RIGHT OR WEST SIDE OF STREET.
 HV7046
 HV7046                          STATION RECOVERY (1973)
 HV7046
 HV7046'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (LFS)
 HV7046'THE STATION AND BOTH REFERENCE MARKS WERE RECOVERED AND FOUND IN
 HV7046'GOOD CONDITION.  THE REFERENCE MARK TWO FOR COBB 1929 WAS ALSO
 HV7046'RECOVERED.  IT WAS INTERSECTED FROM THIS STATION.  I HAD A REPORT
 HV7046'THAT THIS STATION WAS IN DANGER OF BEING DESTROYED.  HOWEVER THIS
 HV7046'STATION WAS NOT THE ONE WHICH WAS IN DANGER.  IT WAS TRIANGULATION
 HV7046'STATION CORNER 1908 WHICH WAS IN DANGER.  A DIFFERENCE OF 4
 HV7046'MINUTED AND 28 SECONDS IN DIRECTION TO REFERENCE MARK 1 WAS NOTED.
 HV7046'THE DIRECTION TO REFERENCE MARK 2 WAS WITHIN CLOSE AGREEMENT WITH
 HV7046'THE 1954 OBSERVATIONS.  THE DISTANCES OBTAINED IN 1954 APPEARS TO
 HV7046'BE SLOPE DISTANCES THEREFOR A SHORTED DISTANCE TO BOTH REFERENCE
 HV7046'MARKS.
 HV7046'
 HV7046'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HV7046'
 HV7046'THE STATION IS LOCATED ON THE SOUTH EDGE OF COBB ISLAND NEAR THE
 HV7046'EAST END OF THE ISLAND ABOUT 10 MILES EAST OF THE TOLL BRIDGE OVER
 HV7046'THE PATOMAC RIVER.  THE PROPERTY IS OWNED BY A MR. MAY.  HIS WHOLE
 HV7046'NAME AND PHONE NUMBER COULD NOT BE FOUND.
 HV7046'
 HV7046'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND
 HV7046'STATE HIGHWAY 257 AT THE EAST EDGE OF THE TOLL BRIDGE OVER THE
 HV7046'PATOMAC RIVER NEAR NEWBERG.  GO SOUTHEAST ON STATE HIGHWAY 257 FOR
 HV7046'9.8 MILES TO STATE HIGHWAY 254.  TURN RIGHT AND GO SOUTHWEST ON
 HV7046'STATE HIGHWAY 254 FOR 1.2 MILES TO THE SOUTHWEST EDGE OF THE
 HV7046'BRIDGE ENTERING COBB ISLAND.  CONTINUE SOUTHWEST ON BRIDGE
 HV7046'BOULEVARD FOR 0.3 MILE TO A T-INTERSECTION.  TURN LEFT AND GO
 HV7046'SOUTHEAST ON CRAIN ROAD FOR 0.45 MILE TO A CROSSROAD.  TURN RIGHT
 HV7046'AND GO SOUTHWEST ON PIEDMONT DRIVE FOR 0.05 MILE TO THE END OF THE
 HV7046'STREET AND THE STATION.
 HV7046'
 HV7046'THE STATION MARK IS A U.S. NAVY DEPARTMENT DISK STAMPED COBB 3
 HV7046'1951, SET IN THE TOP OF A 12-INCH CONCRETE POST WHICH IS 6 INCHES
 HV7046'BELOW THE SURFACE OF THE GROUND.  IT IS 250 FEET SOUTH-SOUTHWEST
 HV7046'OF THE INTERSECTION OF CRAIN BOULEVARD AND PIEDMONT DRIVE, 160
 HV7046'FEET SOUTHWEST OF MR. MAYS HOUSE, 73 FEET NORTHWEST OF THE CENTER
 HV7046'OF PIEDMONT DRIVE, 74 FEET SOUTHWEST OF A WITNESS POST AND 45 FEET
 HV7046'NORTH-NORTHWEST OF THE SHORE LINE.  (NOTE DESCRIBED)
 HV7046'
 HV7046'REFERENCE MARK ONE IS A STANDARD DISK STAMPED COBB 3 NO 1 1954,
 HV7046'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH IS
 HV7046'FLUSH WITH THE GRASSY SLOPE OF THE SMALL HILL.  IT IS 219 FEET
 HV7046'WEST-SOUTHWEST OF THE CENTER OF THE INTERSECTION OF CRAIN
 HV7046'BOULEVARD, AND PIEDMONT DRIVE, 75 FEET WEST OF PIEDMONT DRIVE AND
 HV7046'64 FEET NORTHWEST OF THE WITNESS POST.
 HV7046'
 HV7046'REFERENCE MARK TWO IS A STANDARD DISK STAMPED COBB 3 NO 2 1954,
 HV7046'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH
 HV7046'PROJECTS 4 INCHES.  IT IS 197 FEET WEST-SOUTHWEST OF THE
 HV7046'INTERSECTION OF CRAIN BLVD. AND PIEDMONT DRIVE, 100 FEET NORTH OF
 HV7046'THE SHORE LINE, 20 FEET EAST OF THE CENTER LINE OF PIEDMONT DRIVE
 HV7046'AND 1 FOOT NORTH OF THE WITNESS POST.
 HV7046'
 HV7046'COBB RM 2 1929 IS A STANDARD REFERENCE MARK DISK STAMPED COBB RM 2
 HV7046'1929, SET IN THE TOP OF A 6-INCH ROUND CONCRETE MONUMENT WHICH
 HV7046'PROJECTS 6 INCHES.  IT IS 240 FEET SOUTH-SOUTH WEST OF THE CENTER
 HV7046'LINE OF CRAIN BLVD., 18 FEET SOUTH OF THE SOUTH SIDE OF A COTTAGE
 HV7046'AND IT IS UNDER A HOLLY BUSH.
 HV7046'
 HV7046'COBB POINT BAR LIGHT 1954 MAY BE USED AS AN AZIMUTH MARK FOR THIS
 HV7046'STATION, SEE DESCRIPTION THEREOF.
 HV7046'
 HV7046'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--ON COBB ISLAND.
 HV7046
 HV7046                          STATION RECOVERY (1974)
 HV7046
 HV7046'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HV7046'THE STATION MARK, REFERENCE MARKS NO. 1 AND NO. 2 WERE RECOVERED
 HV7046'AND FOUND IN GOOD CONDITION AS DESCRIBED IN 1954.  THERE WAS A
 HV7046'CONSIDERABLE DIFFERENCE FOUND IN THE DISTANCE.  THE 1954 DISTANCE
 HV7046'WAS MEASURED ALONG THE SLOPE OF THE GROUND SURFACE.  AT THIS TIME
 HV7046'ALL MARKS WERE PLUMBED AND MEASURED NEAR LEVEL.  NO INFORMATION
 HV7046'WAS FURNISHED THE PARTY AT THIS TIME.  A CHECK AS FOR DIRECTION
 HV7046'COULD NOT BE MADE.  A COMPLETE NEW DESCRIPTION FOLLOWS--
 HV7046'
 HV7046'THE STATION IS LOCATED ON THE SOUTH SIDE OF COBB ISLAND AND NEAR
 HV7046'THE EAST END OF THE ISLAND.  THE STATION IS ON PROPERTY OF MR. H.
 HV7046'R. MAY WHO LIVES NEAR STATION SITE.
 HV7046'
 HV7046'TO REACH THE STATION FROM THE JUNCTION OF U. S. HIGHWAY 301 AND
 HV7046'STATE ROUTE 3, ABOUT 2 MILES NORTH OF THE POTOMAC RIVER BRIDGE, GO
 HV7046'SOUTHEASTERLY ON STATE ROUTE 3 FOR 9.7 MILES TO JUNCTION OF STATE
 HV7046'ROUTE 533.  TURN RIGHT ON COUNTY ROUTE 533 AND GO SOUTHERLY FOR
 HV7046'1.4 MILES TO T INTERSECTION NEAR EDGE OF RIVER.  TURN LEFT AND GO
 HV7046'EAST FOR 0.4 MILE TO CROSS STREET.  TURN RIGHT AND GO SOUTH ON
 HV7046'DIRT ROAD FOR 0.05 MILE TO END OF STREET AT WATERS EDGE AND
 HV7046'STATION ON RIGHT OR WEST SIDE OF STREET AS DESCRIBED.
 HV7046'
 HV7046'THE SURFACE DISK IS A BUREAU OF ORDNANCE U. S. DEPARTMENT OF NAVY
 HV7046'DISK THAT IS CEMENTED IN A CONCRETE BLOCK, THE DISK IS STAMPED
 HV7046'COBB 3 1951, THE MARK IS 4 INCHES BELOW GROUND SURFACE.  IT IS 72
 HV7046'FEET NORTHWEST OF THE NORTH END OF WOODEN PIER, 53 FEET SOUTHWEST
 HV7046'OF A 24-INCH MAPLE TREE, 40 FEET NORTH, NORTHEAST OF THE BANK OF
 HV7046'RIVER, 23 FEET SOUTHWEST OF A 24-INCH PINE TREE.  THERE IS NO
 HV7046'UNDERGROUND MARK.
 HV7046'
 HV7046'REFERENCE MARK 1, A STANDARD TRIANGULATION REFERENCE MARK DISK IS
 HV7046'STAMPED COBB 3 NO 1 1954.  THE DISK IS SET IN THE TOP OF A 12X12
 HV7046'INCH CONCRETE MONUMENT THAT IS FLUSH WITH THE SURFACE OF THE
 HV7046'GROUND.  IT IS 49 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A WIRE
 HV7046'FENCE, 47 FEET WEST, NORTHWEST OF THE APPROXIMATE CENTER OF DIRT
 HV7046'DRIVEWAY LEADING TO WATERS EDGE, AND 23 FEET WEST OF A 24-INCH
 HV7046'MAPLE TREE.
 HV7046'
 HV7046'REFERENCE MARK 2, A STANDARD TRIANGULATION REFERENCE MARK DISK
 HV7046'THAT IS STAMPED COBB 3 NO 2 1954.  THE DISK IS SET IN THE TOP OF A
 HV7046'12X12 INCH CONCRETE MONUMENT THAT PROJECTS 8 INCHES ON THE WEST
 HV7046'SIDE AND IS FLUSH WITH THE SURFACE OF GROUND ON THE EAST SIDE OF
 HV7046'MARK.  IT IS 48 FEET WEST, SOUTHWEST OF THE SOUTHWEST CORNER OF A
 HV7046'FRAME HOUSE, 14 FEET SOUTHEAST OF THE APPROXIMATE CENTER OF DIRT
 HV7046'DRIVE LEADING TO WATERS EDGE, 12.5 FEET WEST OF A BRICK BARBECUE
 HV7046'PIT AND 7.5 FEET NORTHWEST OF THE SOUTHWEST CORNER OF A WIRE FENCE.
 HV7046'
 HV7046'NO SUITABLE PLACE WAS FOUND TO ESTABLISH AN AZIMUTH MARK.
 HV7046'
 HV7046'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--COBB ISLAND.
 HV7046
 HV7046                          STATION RECOVERY (1981)
 HV7046
 HV7046'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1981 (WSB)
 HV7046'COBB 3 1951 RECOVERED GOOD.
 HV7046'
 HV7046'NO. 1 RECOVERED GOOD.
 HV7046'
 HV7046'NO 2 RECOVERED GOOD.
 HV7046'
 HV7046'DISTANCE AND DIRECTION FROM NEAREST TOWN--COBB ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2434 ***********************************************************************
 HU2434  DESIGNATION -  COBB AZ MK
 HU2434  PID         -  HU2434
 HU2434  STATE/COUNTY-  MD/WICOMICO
 HU2434  COUNTRY     -  US
 HU2434  USGS QUAD   -  PITTSVILLE (2016)
 HU2434
 HU2434                         *CURRENT SURVEY CONTROL
 HU2434  ______________________________________________________________________
 HU2434* NAD 83(1986) POSITION- 38 25 56.98   (N) 075 24 00.29   (W)   HD_HELD1
 HU2434* NAVD 88 ORTHO HEIGHT -    14.336 (meters)       47.03  (feet) ADJUSTED
 HU2434  ______________________________________________________________________
 HU2434  GEOID HEIGHT    -        -35.848 (meters)                     GEOID18
 HU2434  DYNAMIC HEIGHT  -         14.328 (meters)       47.01  (feet) COMP
 HU2434  MODELED GRAVITY -    980,011.4   (mgal)                       NAVD 88
 HU2434
 HU2434  VERT ORDER      -  SECOND    CLASS I
 HU2434
 HU2434.The horizontal coordinates were determined by differentially corrected
 HU2434.hand held GPS observations or other comparable positioning techniques
 HU2434.and have an estimated accuracy of +/- 3 meters.
 HU2434
 HU2434.The orthometric height was determined by differential leveling and
 HU2434.adjusted by the NATIONAL GEODETIC SURVEY
 HU2434.in June 1991.
 HU2434
 HU2434.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2434.GEOID18 height accuracy estimate available here.
 HU2434
 HU2434.Click photographs - Photos may exist for this station.
 HU2434
 HU2434.The dynamic height is computed by dividing the NAVD 88
 HU2434.geopotential number by the normal gravity value computed on the
 HU2434.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2434.degrees latitude (g = 980.6199 gals.).
 HU2434
 HU2434.The modeled gravity was interpolated from observed gravity values.
 HU2434
 HU2434;                    North         East    Units  Estimated Accuracy
 HU2434;SPC MD       -    86,234.1     539,685.6     MT  (+/- 3 meters HH1 GPS) 
 HU2434
 HU2434_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6508153878(NAD 83)
 HU2434
 HU2434                          SUPERSEDED SURVEY CONTROL
 HU2434
 HU2434  NGVD 29 (06/12/91)   14.583  (m)           47.84   (f) ADJUSTED    2 1
 HU2434
 HU2434.Superseded values are not recommended for survey control.
 HU2434
 HU2434.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2434.See file dsdata.pdf to determine how the superseded data were derived.
 HU2434
 HU2434_MARKER: DD = SURVEY DISK
 HU2434_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2434_STAMPING: COBB AZ 1964
 HU2434_MARK LOGO: MDBCSM
 HU2434_PROJECTION: PROJECTING 15 CENTIMETERS
 HU2434_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2434_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2434+STABILITY: SURFACE MOTION
 HU2434_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2434+SATELLITE: SATELLITE OBSERVATIONS - February 28, 1990
 HU2434
 HU2434  HISTORY     - Date     Condition        Report By
 HU2434  HISTORY     - 1964     MONUMENTED       MDBCSM
 HU2434  HISTORY     - 19900228 GOOD             NGS
 HU2434
 HU2434                          STATION DESCRIPTION
 HU2434
 HU2434'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2434'5.0 KM (3.11 MI) NORTHEASTERLY ALONG STATE HIGHWAY 353 (PITTSVILLE
 HU2434'DELAWARE LINE ROAD) FROM THE JUNCTION OF STATE HIGHWAY 346 (OCEAN
 HU2434'CITY ROAD) IN PITTSVILLE, 0.2 KM (0.12 MI) SOUTH OF THE INTERSECTION
 HU2434'OF TINGLE ROAD, 7.9 M (25.92 FT) WEST OF AND LEVEL WITH THE HIGHWAY
 HU2434'CENTERLINE, 5.0 M (16.40 FT) EAST-NORTHEAST OF UTILITY POLE NUMBER
 HU2434'801 104, 2.8 M (9.19 FT) NORTH-NORTHEAST OF THE NORTHEAST CORNER OF A
 HU2434'FENCE, 1.8 M (5.91 FT) SOUTHWEST OF UTILITY POLE NUMBER 77, AND IN A
 HU2434'CONCRETE MONUMENT THAT PROJECTS 0.15 M (0.49 FT) ABOVE THE GROUND
 HU2434'SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7000 ***********************************************************************
 HV7000  DESIGNATION -  COBB POINT BAR LIGHT
 HV7000  PID         -  HV7000
 HV7000  STATE/COUNTY-  MD/ST MARYS
 HV7000  COUNTRY     -  US
 HV7000  USGS QUAD   -  STRATFORD HALL (2019)
 HV7000
 HV7000                         *CURRENT SURVEY CONTROL
 HV7000  ______________________________________________________________________
 HV7000* NAD 83(1993) POSITION- 38 14 33.21150(N) 076 49 35.76028(W)   ADJUSTED
 HV7000* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7000  ______________________________________________________________________
 HV7000  GEOID HEIGHT    -        -33.687 (meters)                     GEOID18
 HV7000  LAPLACE CORR    -         -0.69  (seconds)                    DEFLEC18
 HV7000  HORZ ORDER      -  SECOND
 HV7000
 HV7000.The horizontal coordinates were established by classical geodetic methods
 HV7000.and adjusted by the National Geodetic Survey in November 1994.
 HV7000
 HV7000.The orthometric height was scaled from a topographic map.
 HV7000
 HV7000.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7000.GEOID18 height accuracy estimate available here.
 HV7000
 HV7000.Click photographs - Photos may exist for this station.
 HV7000
 HV7000.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7000
 HV7000. The following values were computed from the NAD 83(1993) position.
 HV7000
 HV7000;                    North         East     Units Scale Factor Converg.
 HV7000;SPC MD       -    63,941.167   415,179.991   MT  1.00001049   +0 06 31.8
 HV7000;SPC MD       -   209,780.31  1,362,136.35   sFT  1.00001049   +0 06 31.8
 HV7000;SPC VA N     - 2,065,257.790 3,646,480.846   MT  0.99996967   +1 02 39.8
 HV7000;SPC VA N     - 6,775,766.60 11,963,495.91   sFT  0.99996967   +1 02 39.8
 HV7000;UTM  18      - 4,234,305.455   340,152.661   MT  0.99991468   -1 07 51.2
 HV7000
 HV7000!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7000!SPC MD       -   1.00000533  x   1.00001049  =   1.00001582
 HV7000!SPC VA N     -   1.00000533  x   0.99996967  =   0.99997500
 HV7000!UTM  18      -   1.00000533  x   0.99991468  =   0.99992001
 HV7000
 HV7000_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4015234305(NAD 83)
 HV7000
 HV7000                          SUPERSEDED SURVEY CONTROL
 HV7000
 HV7000  NAD 83(1991)-  38 14 33.21048(N)    076 49 35.76569(W) AD(       ) 2
 HV7000  NAD 83(1986)-  38 14 33.21169(N)    076 49 35.77589(W) AD(       ) 2
 HV7000  NAD 27      -  38 14 32.75100(N)    076 49 36.89300(W) AD(       ) 2
 HV7000
 HV7000.Superseded values are not recommended for survey control.
 HV7000
 HV7000.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7000.See file dsdata.pdf to determine how the superseded data were derived.
 HV7000
 HV7000_MARKER: 14 = NAVIGATION LIGHT
 HV7000
 HV7000  HISTORY     - Date     Condition        Report By
 HV7000  HISTORY     - 1954     FIRST OBSERVED   CGS
 HV7000  HISTORY     - 1973     GOOD             NGS
 HV7000  HISTORY     - 1973     GOOD             NGS
 HV7000
 HV7000                          STATION DESCRIPTION
 HV7000
 HV7000'DESCRIBED BY COAST AND GEODETIC SURVEY 1954 (DAJ)
 HV7000'THIS IS AN UNOCCUPIED STATION.
 HV7000'
 HV7000'THE STATION IS LOCATED ABOUT 1 MILE SOUTHEAST OF THE SOUTHEAST
 HV7000'END OF COBB ISLAND, AT THE SOUTHEAST END OF COBB POINT BAR AND
 HV7000'NEAR THE ENTRANCE TO THE DEEP WATER CHANNEL OF THE WICOMICO RIVER.
 HV7000'THE LIGHT IS AT THE TOP OF A PYRAMID SHAPED STRUCTURE, MOUNTED ON
 HV7000'PILING, ABOUT 20 FEET HIGH.
 HV7000'
 HV7000'THIS POINT WAS NOT VISITED AT THIS TIME.
 HV7000'
 HV7000'THE POINT INTERSECTED WAS THE LIGHT AT THE TOP OF STRUCTURE.
 HV7000
 HV7000                          STATION RECOVERY (1973)
 HV7000
 HV7000'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (LFS)
 HV7000'THIS STATION WAS NOT VISITED AT THIS DATE.  HOWEVER IT WAS
 HV7000'CHECKED BY ANGLES FROM COBB 3 (B OF O) 1954.
 HV7000'
 HV7000'RECOVERED AS DESCRIBED.
 HV7000'
 HV7000'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN ABOUT 1-1/2 MILES
 HV7000'SOUTHEAST OF COBB ISLAND.
 HV7000
 HV7000                          STATION RECOVERY (1973)
 HV7000
 HV7000'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 HV7000'THIS STATION WAS NOT VISITED AT THIS DATE, HOWEVER ITS POSITION
 HV7000'WAS VERIFIED BY ANGLES OBSERVED FROM CORNER 1908.
 HV7000'
 HV7000'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 1 MILE SOUTH OF
 HV7000'COBB ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1628 ***********************************************************************
 HU1628  DESIGNATION -  COBBS
 HU1628  PID         -  HU1628
 HU1628  STATE/COUNTY-  MD/WICOMICO
 HU1628  COUNTRY     -  US
 HU1628  USGS QUAD   -  WHALEYVILLE (2016)
 HU1628
 HU1628                         *CURRENT SURVEY CONTROL
 HU1628  ______________________________________________________________________
 HU1628* NAD 83(1991) POSITION- 38 24 55.40618(N) 075 22 12.47181(W)   ADJUSTED
 HU1628* NAVD 88 ORTHO HEIGHT -    13.428 (meters)       44.06  (feet) ADJUSTED
 HU1628  ______________________________________________________________________
 HU1628  GEOID HEIGHT    -        -35.880 (meters)                     GEOID18
 HU1628  LAPLACE CORR    -         -0.59  (seconds)                    DEFLEC18
 HU1628  DYNAMIC HEIGHT  -         13.419 (meters)       44.03  (feet) COMP
 HU1628  MODELED GRAVITY -    980,010.5   (mgal)                       NAVD 88
 HU1628
 HU1628  HORZ ORDER      -  SECOND
 HU1628  VERT ORDER      -  SECOND    CLASS I
 HU1628
 HU1628.The horizontal coordinates were established by classical geodetic methods
 HU1628.and adjusted by the National Geodetic Survey in January 1992.
 HU1628
 HU1628.The orthometric height was determined by differential leveling and
 HU1628.adjusted by the NATIONAL GEODETIC SURVEY
 HU1628.in June 1991.
 HU1628
 HU1628.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1628.GEOID18 height accuracy estimate available here.
 HU1628
 HU1628.Click photographs - Photos may exist for this station.
 HU1628
 HU1628.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1628
 HU1628.The dynamic height is computed by dividing the NAVD 88
 HU1628.geopotential number by the normal gravity value computed on the
 HU1628.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1628.degrees latitude (g = 980.6199 gals.).
 HU1628
 HU1628.The modeled gravity was interpolated from observed gravity values.
 HU1628
 HU1628. The following values were computed from the NAD 83(1991) position.
 HU1628
 HU1628;                    North         East     Units Scale Factor Converg.
 HU1628;SPC MD       -    84,382.120   542,334.006   MT  0.99998193   +1 01 22.7
 HU1628;SPC MD       -   276,843.67  1,779,307.48   sFT  0.99998193   +1 01 22.7
 HU1628;UTM  18      - 4,251,969.956   467,687.588   MT  0.99961286   -0 13 47.9
 HU1628
 HU1628!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1628!SPC MD       -   1.00000352  x   0.99998193  =   0.99998545
 HU1628!UTM  18      -   1.00000352  x   0.99961286  =   0.99961638
 HU1628
 HU1628:                Primary Azimuth Mark                     Grid Az
 HU1628:SPC MD       -  COBBS AZ MK 2                            185 31 44.1
 HU1628:UTM  18      -  COBBS AZ MK 2                            186 46 54.7
 HU1628
 HU1628_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6768751969(NAD 83)
 HU1628
 HU1628|---------------------------------------------------------------------|
 HU1628| PID    Reference Object                     Distance      Geod. Az  |
 HU1628|                                                           dddmmss.s |
 HU1628| DC7930 COBBS RM 1                           26.270 METERS 13213     |
 HU1628| CS6539 COBBS RM 3                           30.114 METERS 13802     |
 HU1628| DC7929 COBBS AZ MK                                        1851853.6 |
 HU1628| HU2438 COBBS AZ MK 2                       APPROX. 0.9 KM 1863306.8 |
 HU1628| DC7931 COBBS RM 2                           21.966 METERS 22822     |
 HU1628|---------------------------------------------------------------------|
 HU1628
 HU1628                          SUPERSEDED SURVEY CONTROL
 HU1628
 HU1628  NAD 83(1986)-  38 24 55.39359(N)    075 22 12.49647(W) AD(       ) 2
 HU1628  NAD 27      -  38 24 54.97900(N)    075 22 13.79900(W) AD(       ) 2
 HU1628  NGVD 29              13.67   (m)           44.8    (f) LEVELING    3  
 HU1628  NGVD 29 (06/12/91)   13.674  (m)           44.86   (f) ADJUSTED    2 1
 HU1628
 HU1628.Superseded values are not recommended for survey control.
 HU1628
 HU1628.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1628.See file dsdata.pdf to determine how the superseded data were derived.
 HU1628
 HU1628_MARKER: DS = TRIANGULATION STATION DISK
 HU1628_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1628_STAMPING: COBBS 1955
 HU1628_MARK LOGO: CGS
 HU1628_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1628_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1628+STABILITY: SURFACE MOTION
 HU1628_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU1628+SATELLITE: SATELLITE OBSERVATIONS - February 27, 1990
 HU1628
 HU1628  HISTORY     - Date     Condition        Report By
 HU1628  HISTORY     - 1955     MONUMENTED       CGS
 HU1628  HISTORY     - 1955     GOOD             CGS
 HU1628  HISTORY     - 1986     GOOD             NGS
 HU1628  HISTORY     - 19900227 GOOD             NGS
 HU1628
 HU1628                          STATION DESCRIPTION
 HU1628
 HU1628'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 HU1628'THE STATION IS LOCATED ABOUT 3 MILES NORTHEAST OF PITTSVILLE, 2
 HU1628'MILES NORTH-NORTHWEST OF WILLARDS, 87 FEET WEST OF THE CENTER OF A
 HU1628'MACADAM ROAD, 30 FEET NORTHWEST OF THE CENTER OF A DIRT ROAD, 4
 HU1628'FEET SOUTHWEST OF A WHITE 4 IN X 4 IN WITNESS POST, AND ON LAND
 HU1628'OWNED BY MR. DENVER RAYNE.
 HU1628'
 HU1628'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND
 HU1628'STATE HIGHWAY 354 IN WILLARDS, GO WEST ON U.S. HIGHWAY 50 FOR 1.2
 HU1628'MILES TO A NARROW MACADAM ROAD ON THE RIGHT, TURN RIGHT (NORTH)
 HU1628'AND FOLLOW THE MACADAM ROAD FOR 1.6 MILES TO THE AZIMUTH MARK ON
 HU1628'THE LEFT, CONTINUE ON THE HIGHWAY FOR 0.2 MILE TO A DIRT ROAD ON
 HU1628'THE LEFT, TURN SHARP LEFT (SOUTHWEST) AND THE STATION IS ON THE
 HU1628'RIGHT AS DESCRIBED BELOW.
 HU1628'
 HU1628'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 HU1628'STAMPED COBBS 1955.
 HU1628'
 HU1628'REFERENCE MARK 1 IS 45 FEET SOUTHEAST OF THE CENTER OF THE DIRT
 HU1628'ROAD, 21 FEET WEST OF THE CENTER OF THE MACADAM ROAD, AND 21 FEET
 HU1628'NORTH OF A POWERLINE POLE.  THE MARK PROJECTS 2 INCHES, AND THE
 HU1628'DISK IS STAMPED COBBS NO 1 1955.
 HU1628'
 HU1628'REFERENCE MARK 2 IS 21 FEET NORTHWEST OF THE CENTER OF THE MACADAM
 HU1628'ROAD.  THE MARK PROJECTS 5 INCHES, AND THE DISK IS STAMPED COBBS
 HU1628'NO 2 1955.
 HU1628'
 HU1628'THE AZIMUTH MARK IS 108 FEET NORTH OF THE NORTHEAST CORNER OF A
 HU1628'CHICKEN HOUSE, 18 FEET WEST OF THE CENTER OF THE MACADAM ROAD, 3
 HU1628'FEET NORTH OF A POWERLINE POLE, AND 2 FEET NORTH OF A WHITE 4 IN
 HU1628'X 4 IN WITNESS POST.  THE MARK PROJECTS 3 INCHES, AND THE DISK IS
 HU1628'STAMPED COBBS 1955.
 HU1628'
 HU1628'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HU1628
 HU1628                          STATION RECOVERY (1955)
 HU1628
 HU1628'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955
 HU1628'RECOVERED IN GOOD CONDITION.
 HU1628
 HU1628                          STATION RECOVERY (1986)
 HU1628
 HU1628'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HU1628'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES NOTED BELOW -- THE
 HU1628'STATION MARK AND REFERENCE MARK TWO WERE RECOVERED AND FOUND IN GOOD
 HU1628'CONDITION.  REFERENCE MARK ONE WAS SEARCHED FOR BUT NOT FOUND.  THE
 HU1628'AZIMUTH MARK WAS FOUND DESTROYED. A SHORTER DISTANCE OF 0.010 METER OR
 HU1628'0.03 FT WAS NOTED TO REFERENCE MARK TWO. A NEW REFERENCE MARK THREE
 HU1628'AND A NEW AZIMUTH MARK TWO WERE ESTABLISHED. A COMPLETE NEW
 HU1628'DESCRIPTION OF THIS STATION FOLLOWS.
 HU1628'
 HU1628'THE STATION IS LOCATED ABOUT 4.8 KM (3 MI) NORTHEAST OF PITTSVILLE AND
 HU1628'3.2 KM (2 MI) NORTH-NORTHWEST OF WILLARDS.  OWNERSHIP--MISS ELMA RAYNE
 HU1628'
 HU1628'TO REACH THE STATION FROM THE POST OFFICE AT WILLARDS, GO NORTH FOR
 HU1628'0.1 KM (0.05 MI) ON MAIN STREET TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 HU1628'WEST FOR 2.1 KM (1.3 MI) ON RICHLAND ROAD TO A T-INTERSECTION.  TURN
 HU1628'RIGHT AND GO NORTH FOR 1.35 KM (0.85 MI) ON RICHARDSON ROAD TO THE
 HU1628'AZIMUTH MARK ON THE RIGHT.  CONTINUE STRAIGHT AHEAD AND GO NORTH FOR
 HU1628'0.85 METERS (0.55 FT) ON RICHARDSON ROAD TO THE STATION ON THE LEFT.
 HU1628'
 HU1628'THE STATION IS A STANDARD NGS DISK STAMPED ---COBBS 1955---, SET INTO
 HU1628'THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER RECESSED 5 CM
 HU1628'BELOW GROUND.  LOCATED 29.0 METERS (95 FT) WEST FROM THE CENTER OF
 HU1628'RICHARDSON ROAD, 31.1 METERS (102 FT) NORTH FROM THE CENTER OF A
 HU1628'PRIVATE DRIVE, 39.3 METERS (129.1 FT) NORTH-NORTHEAST FROM THE
 HU1628'NORTHEAST CORNER OF A ONE STORY WOOD FRAME HOUSE, 8.9 METERS (29.3 FT)
 HU1628'SOUTH-SOUTHEAST FROM A TWIN 12-INCH PINE TREE AND 0.3 METERS (0.9 FT)
 HU1628'SOUTH FROM A METAL WITNESS POST.
 HU1628'
 HU1628'REFERENCE MARK NO. 2 IS A STANDARD NGS DISK STAMPED
 HU1628'---COBBS NO 2 1955---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 HU1628'30 CM IN DIAMETER RECESSED 8 CM BELOW GROUND.  LOCATED 43.2 METERS
 HU1628'(141.6 FT) WEST FROM THE CENTER OF RICHARDSON ROAD, 22.1 METERS
 HU1628'(72.6 FT) NORTH FROM THE NORTHEAST CORNER OF THE HOUSE, 3.9 METERS
 HU1628'(12.8 FT) NORTH-NORTHEAST FROM A 16-INCH PINE TREE AT THE SOUTHWEST
 HU1628'CORNER OF THE HOUSE AND 22.1 METERS (72.5 FT) SOUTHWEST FROM THE METAL
 HU1628'WITNESS POST.  MARK IS 0.4 METERS ABOVE THE STATION.
 HU1628'
 HU1628'REFERENCE MARK NO. 3 IS A STANDARD NGS DISK STAMPED
 HU1628'---COBBS 1955 NO 3 1986---, SET INTO THE TOP OF A ROUND CONCRETE
 HU1628'MONUMENT 30 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 5.5 METERS
 HU1628'(17.9 FT) WEST FROM THE CENTER OF ROBINSON ROAD, 15.2 METERS (49.8 FT)
 HU1628'NORTH FROM THE CENTER OF THE PRIVATE DRIVE, 37.2 METERS (122.1 FT)
 HU1628'NORTHEAST FROM THE NORTHEAST CORNER OF THE HOUSE AND 30.3 METERS
 HU1628'(99.5 FT) SOUTHEAST FROM THE METAL WITNESS POST.  MARK IS 0.8 METERS
 HU1628'BELOW THE STATION.
 HU1628
 HU1628                          STATION RECOVERY (1990)
 HU1628
 HU1628'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990 (RHK)
 HU1628'2.0 KM (1.24 MI) WESTERLY ALONG STATE HIGHWAY 346 (OCEAN CITY ROAD)
 HU1628'FROM THE JUNCTION OF MAIN STREET IN WILLARDS, THENCE 3.0 KM
 HU1628'(1.86 MI) NORTHERLY ALONG RICHARDSON ROAD, 30.5 M (100.07 FT) NORTH
 HU1628'OF THE CENTER OF A DRIVEWAY, 28.5 M (93.50 FT) WEST OF THE CENTER OF
 HU1628'THE ROAD, 0.9 M (2.95 FT) ABOVE THE LEVEL OF THE ROAD, 0.2 M
 HU1628'(0.66 FT) SOUTH OF A WITNESS POST, AND IN A CONCRETE MONUMENT THAT IS
 HU1628'FLUSH WITH THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2438 ***********************************************************************
 HU2438  DESIGNATION -  COBBS AZ MK 2
 HU2438  PID         -  HU2438
 HU2438  STATE/COUNTY-  MD/WICOMICO
 HU2438  COUNTRY     -  US
 HU2438  USGS QUAD   -  WHALEYVILLE (2016)
 HU2438
 HU2438                         *CURRENT SURVEY CONTROL
 HU2438  ______________________________________________________________________
 HU2438* NAD 83(1991) POSITION- 38 24 27.93265(N) 075 22 16.48200(W)   ADJUSTED
 HU2438* NAVD 88 ORTHO HEIGHT -    11.475 (meters)       37.65  (feet) ADJUSTED
 HU2438  ______________________________________________________________________
 HU2438  GEOID HEIGHT    -        -35.888 (meters)                     GEOID18
 HU2438  LAPLACE CORR    -         -0.58  (seconds)                    DEFLEC18
 HU2438  DYNAMIC HEIGHT  -         11.468 (meters)       37.62  (feet) COMP
 HU2438  MODELED GRAVITY -    980,009.8   (mgal)                       NAVD 88
 HU2438
 HU2438  HORZ ORDER      -  THIRD
 HU2438  VERT ORDER      -  SECOND    CLASS I
 HU2438
 HU2438.The horizontal coordinates were established by classical geodetic methods
 HU2438.and adjusted by the National Geodetic Survey in January 1992.
 HU2438
 HU2438.The orthometric height was determined by differential leveling and
 HU2438.adjusted by the NATIONAL GEODETIC SURVEY
 HU2438.in June 1991.
 HU2438
 HU2438.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2438.GEOID18 height accuracy estimate available here.
 HU2438
 HU2438.Click photographs - Photos may exist for this station.
 HU2438
 HU2438.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2438
 HU2438.The dynamic height is computed by dividing the NAVD 88
 HU2438.geopotential number by the normal gravity value computed on the
 HU2438.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2438.degrees latitude (g = 980.6199 gals.).
 HU2438
 HU2438.The modeled gravity was interpolated from observed gravity values.
 HU2438
 HU2438. The following values were computed from the NAD 83(1991) position.
 HU2438
 HU2438;                    North         East     Units Scale Factor Converg.
 HU2438;SPC MD       -    83,533.401   542,251.851   MT  0.99998300   +1 01 20.1
 HU2438;SPC MD       -   274,059.17  1,779,037.95   sFT  0.99998300   +1 01 20.1
 HU2438;UTM  18      - 4,251,123.548   467,586.931   MT  0.99961294   -0 13 50.3
 HU2438
 HU2438!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2438!SPC MD       -   1.00000383  x   0.99998300  =   0.99998683
 HU2438!UTM  18      -   1.00000383  x   0.99961294  =   0.99961677
 HU2438
 HU2438_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6758651123(NAD 83)
 HU2438
 HU2438                          SUPERSEDED SURVEY CONTROL
 HU2438
 HU2438  NAD 83(1986)-  38 24 27.92006(N)    075 22 16.50667(W) AD(       ) 3
 HU2438  NGVD 29              11.72   (m)           38.5    (f) LEVELING    3  
 HU2438  NGVD 29 (06/12/91)   11.721  (m)           38.45   (f) ADJUSTED    2 1
 HU2438
 HU2438.Superseded values are not recommended for survey control.
 HU2438
 HU2438.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2438.See file dsdata.pdf to determine how the superseded data were derived.
 HU2438
 HU2438_MARKER: DZ = AZIMUTH MARK DISK
 HU2438_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2438_STAMPING: COBBS 1955 NO 2 1986
 HU2438_MARK LOGO: NGS
 HU2438_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2438_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2438+STABILITY: SURFACE MOTION
 HU2438_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2438+SATELLITE: SATELLITE OBSERVATIONS - February 27, 1990
 HU2438
 HU2438  HISTORY     - Date     Condition        Report By
 HU2438  HISTORY     - 1986     MONUMENTED       NGS
 HU2438  HISTORY     - 1986     GOOD             NGS
 HU2438  HISTORY     - 19900227 GOOD             NGS
 HU2438
 HU2438                          STATION DESCRIPTION
 HU2438
 HU2438'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HU2438'THE STATION IS LOCATED ABOUT 4.8 KM (3 MI) NORTHEAST OF PITTSVILLE
 HU2438'AND 2.25 KM (1.4 MI) NORTH-NORTHWEST OF WILLARDS.
 HU2438'OWNERSHIP--MISS ELMA RAYNE.
 HU2438'
 HU2438'TO REACH THE STATION FROM THE POST OFFICE AT WILLARDS, GO
 HU2438'NORTH FOR 0.1 KM (0.05 MI) ON MAIN STREET TO A SIDE ROAD LEFT.
 HU2438'TURN LEFT AND GO WEST FOR 2.1 KM (1.3 MI) ON RICHLAND ROAD TO A
 HU2438'T-INTERSECTION.
 HU2438'TURN RIGHT AND GO NORTH FOR 1.35 KM (0.85 MI) ON RICHARDSON ROAD TO
 HU2438'THE STATION ON THE RIGHT.
 HU2438'
 HU2438'THE STATION IS A STANDARD NGS DISK
 HU2438'STAMPED---COBBS 1955 NO 2 1986---,
 HU2438'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 HU2438'30 CM IN DIAMETER RECESSED 15 CM BELOW GROUND.  LOCATED
 HU2438'6.2 METERS (20.2 FT) EAST FROM THE CENTER OF RICHARDSON ROAD,
 HU2438'13.4 METERS (44 FT) WEST FROM THE SOUTHWEST CORNER OF A ONE STORY
 HU2438'FRAME HOUSE,
 HU2438'13.6 METERS (44.6 FT) NORTH FROM THE CENTER OF A PRIVATE DRIVE AND
 HU2438'23.9 METERS (78.4 FT) NORTH FROM A POWERLINE POLE NUMBERED
 HU2438'801 59 17 1 AND WITH A TRANSFORMER.
 HU2438'THE UNDERGROUND MARK IS A STANDARD NGS DISK
 HU2438'STAMPED---COBBS 1955 NO 2 1986---,
 HU2438'SET INTO AN IRREGULAR MASS OF CONCRETE 1.0 METERS BELOW THE SURFACE.
 HU2438
 HU2438                          STATION RECOVERY (1986)
 HU2438
 HU2438'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 HU2438'RECOVERED IN GOOD CONDITION.
 HU2438
 HU2438                          STATION RECOVERY (1990)
 HU2438
 HU2438'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU2438'2.0 KM (1.24 MI) WESTERLY ALONG STATE HIGHWAY 346 (OCEAN CITY ROAD)
 HU2438'FROM THE JUNCTION OF MAIN STREET IN WILLARDS, THENCE 2.2 KM
 HU2438'(1.37 MI) NORTHERLY ALONG RICHARDSON ROAD, 23.9 M (78.41 FT) NORTH OF
 HU2438'A TELEPHONE PEDESTAL, 13.6 M (44.62 FT) NORTH OF THE MOST SOUTHERLY 1
 HU2438'OF 2 DRIVEWAYS, 13.4 M (43.96 FT) WEST OF THE SOUTHWEST CORNER OF A
 HU2438'HOUSE, 6.2 M (20.34 FT) EAST OF THE CENTER OF THE ROAD, 0.2 M
 HU2438'(0.66 FT) BELOW THE LEVEL OF THE ROAD, AND IN A CONCRETE MONUMENT
 HU2438'THAT IS 0.1 M (0.33 FT) BELOW THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6829 ***********************************************************************
 HV6829  DESIGNATION -  COBRUMS MSFC 1908
 HV6829  PID         -  HV6829
 HV6829  STATE/COUNTY-  MD/ST MARYS
 HV6829  COUNTRY     -  US
 HV6829  USGS QUAD   -  LEONARDTOWN (2016)
 HV6829
 HV6829                         *CURRENT SURVEY CONTROL
 HV6829  ______________________________________________________________________
 HV6829* NAD 83(1993) POSITION- 38 17 28.20789(N) 076 43 19.07588(W)   ADJUSTED
 HV6829* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6829  ______________________________________________________________________
 HV6829  GEOID HEIGHT    -        -33.752 (meters)                     GEOID18
 HV6829  LAPLACE CORR    -         -1.87  (seconds)                    DEFLEC18
 HV6829  HORZ ORDER      -  THIRD
 HV6829
 HV6829.The horizontal coordinates were established by classical geodetic methods
 HV6829.and adjusted by the National Geodetic Survey in November 1994.
 HV6829
 HV6829.The orthometric height was scaled from a topographic map.
 HV6829
 HV6829.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6829.GEOID18 height accuracy estimate available here.
 HV6829
 HV6829.Click photographs - Photos may exist for this station.
 HV6829
 HV6829.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6829
 HV6829. The following values were computed from the NAD 83(1993) position.
 HV6829
 HV6829;                    North         East     Units Scale Factor Converg.
 HV6829;SPC MD       -    69,359.620   424,323.582   MT  1.00000155   +0 10 28.2
 HV6829;SPC MD       -   227,557.35  1,392,134.95   sFT  1.00000155   +0 10 28.2
 HV6829;UTM  18      - 4,239,524.078   349,410.425   MT  0.99987928   -1 04 02.0
 HV6829
 HV6829!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6829!SPC MD       -   1.00000518  x   1.00000155  =   1.00000673
 HV6829!UTM  18      -   1.00000518  x   0.99987928  =   0.99988446
 HV6829
 HV6829:                Primary Azimuth Mark                     Grid Az
 HV6829:SPC MD       -  TOMAKOKIN MSFC 1908                      321 02 29.2
 HV6829:UTM  18      -  TOMAKOKIN MSFC 1908                      322 16 59.4
 HV6829
 HV6829_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4941039524(NAD 83)
 HV6829
 HV6829|---------------------------------------------------------------------|
 HV6829| PID    Reference Object                     Distance      Geod. Az  |
 HV6829|                                                           dddmmss.s |
 HV6829| HV6831 TOMAKOKIN MSFC 1908                 486.923 METERS 3211257.4 |
 HV6829|---------------------------------------------------------------------|
 HV6829
 HV6829                          SUPERSEDED SURVEY CONTROL
 HV6829
 HV6829  NAD 83(1991)-  38 17 28.20669(N)    076 43 19.08121(W) AD(       ) 3
 HV6829  NAD 83(1986)-  38 17 28.20749(N)    076 43 19.09259(W) AD(       ) 3
 HV6829  NAD 27      -  38 17 27.78000(N)    076 43 20.17900(W) AD(       ) 3
 HV6829  USSD        -  38 17 28.37800(N)    076 43 20.14500(W) AD(       ) 3
 HV6829
 HV6829.Superseded values are not recommended for survey control.
 HV6829
 HV6829.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6829.See file dsdata.pdf to determine how the superseded data were derived.
 HV6829
 HV6829_MARKER: H = DRILL HOLE
 HV6829_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6829_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6829+STABILITY: SURFACE MOTION
 HV6829
 HV6829  HISTORY     - Date     Condition        Report By
 HV6829  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6829  HISTORY     - 1942     GOOD             CGS
 HV6829  HISTORY     - 1942     GOOD             CGS
 HV6829  HISTORY     - 1960     SEE DESCRIPTION  CGS
 HV6829
 HV6829                          STATION DESCRIPTION
 HV6829
 HV6829'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6829'STATION IS ON THE WESTERN SHORE OF UPPER ST. CLEMENT BAY, ON
 HV6829'SOUTHERN SIDE OF ENTRANCE TO TOMAKOKIN CREEK, ABOUT 1 MILE SSW OF
 HV6829'STONES WHARF AND 100 YARDS NW OF COBRUMS WHARF, ON A MARSH POINT,
 HV6829'ABOUT 2 FEET ABOVE HIGH WATER, 65 YARDS NNW OF SHORE END OF
 HV6829'COBRUMS WHARF, 7 YARDS S OF SHORE, 8 YARDS SW OF SHORE, 12 YARDS
 HV6829'W OF SHORE AT EXTREME END OF POINT, AND 17 YARDS ENE OF A FENCE.
 HV6829'
 HV6829'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6829'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6829'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6829'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6829'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6829'AS FOLLOWS--NAIL IN BLAZE IN ONE OF SEVERAL BUSHES, 17.04 METERS
 HV6829'(55.9 FEET), S 36 DEG 21 MIN W.  NEAR PEAK OF ROOF OF BARN, 1/8
 HV6829'MILE, S 45 DEG 41 MIN W.  NAIL IN BLAZE IN 36-INCH CHERRY TREE,
 HV6829'30.28 METERS (99.3 FEET), S 87 DEG 39 MIN W.  CHIMNEY ON NEAR END
 HV6829'OF HOUSE, 3/8 MILE, N 23 DEG 57 MIN W.  LEFT TANGENT OF LEFT
 HV6829'CHIMNEY OF HOUSE ON HILL, 1-3/4 MILES, N 3 DEG 30 MIN E.  NEAR
 HV6829'PEAK OF ROOF OF HOUSE ON STONES WHARF, 1 MILE, N 14 DEG 14 MIN E.
 HV6829'PEAK OF FRONT GABLE OF HOUSE, 1-1/2 MILES, N 50 DEG 9 MIN E.  LEFT
 HV6829'TANGENT OF LEFT CHIMNEY OF OLD HOUSE, 7/8 MILE, N 83 DEG 7 MIN E.
 HV6829'LEFT CORNER OF HOUSE ON COBRUMS WHARF, 70 YARDS, S 41 DEG 19 MIN
 HV6829'E.  RIGHT CORNER OF HOUSE ON COBRUMS WHARF, 65 YARDS, S 34 DEG 37
 HV6829'MIN E.  RIGHT CHIMNEY OF HOUSE, 1/2 MILE, S 28 DEG 35 MIN E.
 HV6829
 HV6829                          STATION RECOVERY (1942)
 HV6829
 HV6829'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV6829'STATION RECOVERED IN GOOD CONDITION BUT WILL BE ERODED AWAY WITHIN
 HV6829'A FEW YEARS.
 HV6829'
 HV6829'REACHED FROM THE SQUARE IN LEONARDSTOWN BY GOING N AND W ON ROUTE
 HV6829'5 FOR 2.5 MILES, THENCE LEFT ON CLEMENTS ROAD FOR 3.5 MILES,
 HV6829'THENCE LEFT TOWARDS OAKLEY FOR 2 MILES, THENCE LEFT FOR 1.35
 HV6829'MILES, THENCE LEFT FOR 0.2 MILE, KEEP STRAIGHT AHEAD, GO 0.9 MILE
 HV6829'AND TURN LEFT INTO FARM LANE AS PER SIGN COBRUMS, GO 0.2 MILE TO
 HV6829'FARMHOUSE AND STATION SITE.  IN DRY WEATHER TRUCK CAN BE DRIVEN TO
 HV6829'STATION ABOUT 0.1 MILE FARTHER ON.  STATION IS ON THE N SIDE OF
 HV6829'POINT, 6 FEET S OF EDGE OF BANK, AND 11 FEET E OF FENCE.
 HV6829
 HV6829                          STATION RECOVERY (1942)
 HV6829
 HV6829'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6829'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HV6829'
 HV6829'(1) THE STATION IS 3 YARDS S OF SHORE INSTEAD OF 7 YARDS.
 HV6829'
 HV6829'(2) THE STATION IS 2 YARDS SW OF SHORE INSTEAD OF 8 YARDS.
 HV6829'
 HV6829'(3) THE STATION IS 4 YARDS ENE OF A FENCE INSTEAD OF 17 YARDS.
 HV6829'
 HV6829'(4) ALL TREES GIVEN AS REFERENCES HAVE BEEN DESTROYED.
 HV6829'
 HV6829'(5) THE WHARF AND HOUSE ON THE WHARF HAVE BEEN DESTROYED.
 HV6829'
 HV6829'THE STATION IS LOCATED ON THE WESTERN SHORE OF UPPER ST. CLEMENT
 HV6829'BAY ON THE SOUTHERN SIDE OF THE ENTRANCE TO TOMAKOKIN CREEK, ABOUT
 HV6829'1 MILE SSW OF STONES WHARF, AND 100 YARDS NW OF COBRUMS WHARF, ON
 HV6829'A MARSH POINT ABOUT 2 FEET ABOVE HIGH WATER, 65 YARDS NNW OF SHORE
 HV6829'END OF COBRUMS WHARF, 3 YARDS S OF SHORE, 2 YARDS SW OF SHORE, 9
 HV6829'YARDS W OF SHORE AT EXTREME END OF POINT, AND 4 YARDS ENE OF A FENCE.
 HV6829'
 HV6829'THE STATION MARK IS A HOLE IN CENTER OF THE TOP OF A MARYLAND
 HV6829'SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH SQUARE
 HV6829'CONCRETE MONUMENT 2 FEET LONG, WITH THE TOP PROJECTING ONE INCH
 HV6829'ABOVE THE GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6829'COUNTERSUNK IN THE TOP OF THE MONUMENT.  THE STATION IS IN GOOD
 HV6829'CONDITION.
 HV6829
 HV6829                          STATION RECOVERY (1960)
 HV6829
 HV6829'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6829'STATION DESTROYED.  MONUMENT WAS FOUND OVERTURNED ON THE SHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6297 ***********************************************************************
 JV6297  DESIGNATION -  COEN
 JV6297  PID         -  JV6297
 JV6297  STATE/COUNTY-  MD/HARFORD
 JV6297  COUNTRY     -  US
 JV6297  USGS QUAD   -  FAWN GROVE (2019)
 JV6297
 JV6297                         *CURRENT SURVEY CONTROL
 JV6297  ______________________________________________________________________
 JV6297* NAD 83(2011) POSITION- 39 38 57.99803(N) 076 24 24.64434(W)   ADJUSTED
 JV6297* NAD 83(2011) ELLIP HT-   110.086 (meters)        (06/27/12)   ADJUSTED
 JV6297* NAD 83(2011) EPOCH   -  2010.00
 JV6297* NAVD 88 ORTHO HEIGHT -   142.733 (meters)      468.28  (feet) ADJUSTED
 JV6297  ______________________________________________________________________
 JV6297  GEOID HEIGHT    -        -32.639 (meters)                     GEOID18
 JV6297  NAD 83(2011) X  -  1,155,791.978 (meters)                     COMP
 JV6297  NAD 83(2011) Y  - -4,779,970.193 (meters)                     COMP
 JV6297  NAD 83(2011) Z  -  4,048,162.957 (meters)                     COMP
 JV6297  LAPLACE CORR    -         -2.52  (seconds)                    DEFLEC18
 JV6297  DYNAMIC HEIGHT  -        142.661 (meters)      468.05  (feet) COMP
 JV6297  MODELED GRAVITY -    980,119.6   (mgal)                       NAVD 88
 JV6297
 JV6297  VERT ORDER      -  FIRST     CLASS II
 JV6297
 JV6297  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6297  Standards:
 JV6297         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6297            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6297  -------------------------------------------------------------------
 JV6297  NETWORK    1.41   4.33           0.59   0.53   2.21      0.41415213
 JV6297  -------------------------------------------------------------------
 JV6297  Click here for local accuracies and other accuracy information.
 JV6297
 JV6297.The horizontal coordinates were established by GPS observations
 JV6297.and adjusted by the National Geodetic Survey in June 2012.
 JV6297
 JV6297.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6297.been affixed to the stable North American tectonic plate. See 
 JV6297.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6297
 JV6297.The horizontal coordinates are valid at the epoch date displayed above
 JV6297.which is a decimal equivalence of Year/Month/Day.
 JV6297
 JV6297.The orthometric height was determined by differential leveling and
 JV6297.adjusted by the NATIONAL GEODETIC SURVEY
 JV6297.in June 1991.
 JV6297
 JV6297.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6297.GEOID18 height accuracy estimate available here.
 JV6297
 JV6297.Click photographs - Photos may exist for this station.
 JV6297
 JV6297.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6297
 JV6297.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6297
 JV6297.The ellipsoidal height was determined by GPS observations
 JV6297.and is referenced to NAD 83.
 JV6297
 JV6297.The dynamic height is computed by dividing the NAVD 88
 JV6297.geopotential number by the normal gravity value computed on the
 JV6297.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6297.degrees latitude (g = 980.6199 gals.).
 JV6297
 JV6297.The modeled gravity was interpolated from observed gravity values.
 JV6297
 JV6297. The following values were computed from the NAD 83(2011) position.
 JV6297
 JV6297;                    North         East     Units Scale Factor Converg.
 JV6297;SPC MD       -   220,272.947   450,911.529   MT  1.00004098   +0 22 20.2
 JV6297;SPC MD       -   722,678.83  1,479,365.57   sFT  1.00004098   +0 22 20.2
 JV6297;UTM  18      - 4,389,795.765   379,297.967   MT  0.99977937   -0 53 52.1
 JV6297
 JV6297!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6297!SPC MD       -   0.99998273  x   1.00004098  =   1.00002371
 JV6297!UTM  18      -   0.99998273  x   0.99977937  =   0.99976210
 JV6297
 JV6297_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7929789795(NAD 83)
 JV6297
 JV6297|---------------------------------------------------------------------|
 JV6297| PID    Reference Object                     Distance      Geod. Az  |
 JV6297|                                                           dddmmss.s |
 JV6297| JV6331 COEN AZ MK                          303.713 METERS 17729     |
 JV6297|---------------------------------------------------------------------|
 JV6297
 JV6297                          SUPERSEDED SURVEY CONTROL
 JV6297
 JV6297  NAD 83(2007)-  39 38 57.99809(N)    076 24 24.64514(W) AD(2002.00) 0
 JV6297  ELLIP H (02/10/07)  110.108  (m)                       GP(2002.00)    
 JV6297  ELLIP H (09/18/02)  110.117  (m)                       GP(       ) 4 2
 JV6297  NAD 83(1991)-  39 38 57.99810(N)    076 24 24.64420(W) AD(       ) 1
 JV6297  ELLIP H (01/27/92)  110.109  (m)                       GP(       ) 4 1
 JV6297  NAD 83(1986)-  39 38 57.99113(N)    076 24 24.65056(W) AD(       ) 1
 JV6297  NGVD 29             142.98   (m)          469.1    (f) LEVELING    3  
 JV6297
 JV6297.Superseded values are not recommended for survey control.
 JV6297
 JV6297.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6297.See file dsdata.pdf to determine how the superseded data were derived.
 JV6297
 JV6297_MARKER: DD = SURVEY DISK
 JV6297_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6297_STAMPING: 81 COEN 1989
 JV6297_MARK LOGO: MD-025
 JV6297_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6297_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6297+STABILITY: SURFACE MOTION
 JV6297_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6297+SATELLITE: SATELLITE OBSERVATIONS - June 18, 2009
 JV6297
 JV6297  HISTORY     - Date     Condition        Report By
 JV6297  HISTORY     - 1989     MONUMENTED       RDA
 JV6297  HISTORY     - 20090618 GOOD             MDSHA
 JV6297
 JV6297                          STATION DESCRIPTION
 JV6297
 JV6297'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6297'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND JUST
 JV6297'NORTHEAST OF ROCK STATE PARK.  TO REACH THE STATION FROM THE
 JV6297'INTERSECTION OF STATE HIGHWAY 24 AND STATE HIGHWAY 165 PROCEED SOUTH
 JV6297'ALONG HIGHWAY 24 1.55 MILES TO ITS INTERSECTION WITH COEN ROAD.  TURN
 JV6297'LEFT AND PROCEED EAST ALONG COEN ROAD 0.2 MILES TO ITS INTERSECTION
 JV6297'WITH OLD ROCK ROAD.  TURN RIGHT AND PROCEED APPROXIMATELY 150 FEET TO
 JV6297'THE STATION ON THE RIGHT.  THE STATION IS A STANDARD HARFORD COUNTY
 JV6297'STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 81
 JV6297'COEN 1989.  THE STATION IS 17.1 FEET EAST OF THE CENTERLINE OF OLD
 JV6297'ROCKS ROAD, 45.2 FEET SOUTHEAST OF POWER POLE NUMBER 10706, 27.8 FEET
 JV6297'SOUTH OF THE CENTERLINE OF DRIVEWAY TO RESIDENCE NUMBER 3995.
 JV6297
 JV6297                          STATION RECOVERY (2009)
 JV6297
 JV6297'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV6297'THE 'TO REACH' SHOULD READ TO THE STATION ON THE LEFT. THE RESIDENCE
 JV6297'NUMBER IS 3955.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6331 ***********************************************************************
 JV6331  DESIGNATION -  COEN AZ MK
 JV6331  PID         -  JV6331
 JV6331  STATE/COUNTY-  MD/HARFORD
 JV6331  COUNTRY     -  US
 JV6331  USGS QUAD   -  FAWN GROVE (2019)
 JV6331
 JV6331                         *CURRENT SURVEY CONTROL
 JV6331  ______________________________________________________________________
 JV6331* NAD 83(2011) POSITION- 39 38 48.15982(N) 076 24 24.08560(W)   ADJUSTED
 JV6331* NAD 83(2011) ELLIP HT-   105.561 (meters)        (06/27/12)   ADJUSTED
 JV6331* NAD 83(2011) EPOCH   -  2010.00
 JV6331* NAVD 88 ORTHO HEIGHT -   138.211 (meters)      453.45  (feet) ADJUSTED
 JV6331  ______________________________________________________________________
 JV6331  GEOID HEIGHT    -        -32.638 (meters)                     GEOID18
 JV6331  NAD 83(2011) X  -  1,155,849.610 (meters)                     COMP
 JV6331  NAD 83(2011) Y  - -4,780,151.860 (meters)                     COMP
 JV6331  NAD 83(2011) Z  -  4,047,926.438 (meters)                     COMP
 JV6331  LAPLACE CORR    -         -2.55  (seconds)                    DEFLEC18
 JV6331  DYNAMIC HEIGHT  -        138.141 (meters)      453.22  (feet) COMP
 JV6331  MODELED GRAVITY -    980,119.2   (mgal)                       NAVD 88
 JV6331
 JV6331  VERT ORDER      -  FIRST     CLASS II
 JV6331
 JV6331  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6331  Standards:
 JV6331         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6331            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6331  -------------------------------------------------------------------
 JV6331  NETWORK    1.51   4.66           0.61   0.60   2.38      0.36490824
 JV6331  -------------------------------------------------------------------
 JV6331  Click here for local accuracies and other accuracy information.
 JV6331
 JV6331.The horizontal coordinates were established by GPS observations
 JV6331.and adjusted by the National Geodetic Survey in June 2012.
 JV6331
 JV6331.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6331.been affixed to the stable North American tectonic plate. See 
 JV6331.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6331
 JV6331.The horizontal coordinates are valid at the epoch date displayed above
 JV6331.which is a decimal equivalence of Year/Month/Day.
 JV6331
 JV6331.The orthometric height was determined by differential leveling and
 JV6331.adjusted by the NATIONAL GEODETIC SURVEY
 JV6331.in June 1991.
 JV6331
 JV6331.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6331.GEOID18 height accuracy estimate available here.
 JV6331
 JV6331.Click photographs - Photos may exist for this station.
 JV6331
 JV6331.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6331
 JV6331.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6331
 JV6331.The ellipsoidal height was determined by GPS observations
 JV6331.and is referenced to NAD 83.
 JV6331
 JV6331.The dynamic height is computed by dividing the NAVD 88
 JV6331.geopotential number by the normal gravity value computed on the
 JV6331.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6331.degrees latitude (g = 980.6199 gals.).
 JV6331
 JV6331.The modeled gravity was interpolated from observed gravity values.
 JV6331
 JV6331. The following values were computed from the NAD 83(2011) position.
 JV6331
 JV6331;                    North         East     Units Scale Factor Converg.
 JV6331;SPC MD       -   219,969.606   450,926.823   MT  1.00004034   +0 22 20.6
 JV6331;SPC MD       -   721,683.62  1,479,415.75   sFT  1.00004034   +0 22 20.6
 JV6331;UTM  18      - 4,389,492.239   379,306.531   MT  0.99977934   -0 53 51.5
 JV6331
 JV6331!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6331!SPC MD       -   0.99998344  x   1.00004034  =   1.00002378
 JV6331!UTM  18      -   0.99998344  x   0.99977934  =   0.99976278
 JV6331
 JV6331_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7930689492(NAD 83)
 JV6331
 JV6331|---------------------------------------------------------------------|
 JV6331| PID    Reference Object                     Distance      Geod. Az  |
 JV6331|                                                           dddmmss.s |
 JV6331| JV6297 COEN                                303.713 METERS 35729     |
 JV6331|---------------------------------------------------------------------|
 JV6331
 JV6331                          SUPERSEDED SURVEY CONTROL
 JV6331
 JV6331  NAD 83(2007)-  39 38 48.15988(N)    076 24 24.08640(W) AD(2002.00) 0
 JV6331  ELLIP H (02/10/07)  105.583  (m)                       GP(2002.00)    
 JV6331  ELLIP H (09/18/02)  105.593  (m)                       GP(       ) 4 2
 JV6331  NAD 83(1991)-  39 38 48.15991(N)    076 24 24.08537(W) AD(       ) 1
 JV6331  ELLIP H (01/27/92)  105.585  (m)                       GP(       ) 4 1
 JV6331  NAD 83(1986)-  39 38 48.15293(N)    076 24 24.09175(W) AD(       ) 1
 JV6331  NGVD 29             138.46   (m)          454.3    (f) LEVELING    3  
 JV6331
 JV6331.Superseded values are not recommended for survey control.
 JV6331
 JV6331.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6331.See file dsdata.pdf to determine how the superseded data were derived.
 JV6331
 JV6331_MARKER: DZ = AZIMUTH MARK DISK
 JV6331_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6331_STAMPING: 81 COEN 1989
 JV6331_MARK LOGO: MD-025
 JV6331_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6331_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6331+STABILITY: SURFACE MOTION
 JV6331_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6331+SATELLITE: SATELLITE OBSERVATIONS - June 18, 2009
 JV6331
 JV6331  HISTORY     - Date     Condition        Report By
 JV6331  HISTORY     - 1989     MONUMENTED       RDA
 JV6331  HISTORY     - 19900103 GOOD
 JV6331  HISTORY     - 20090618 GOOD             MDSHA
 JV6331
 JV6331                          STATION DESCRIPTION
 JV6331
 JV6331'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6331'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND JUST
 JV6331'NORTHEAST OF ROCK STATE PARK.  TO REACH THE STATION FROM THE
 JV6331'INTERSECTION OF STATE HIGHWAY 24 AND STATE HIGHWAY 165 PROCEED SOUTH
 JV6331'ALONG HIGHWAY 24 1.55 MILES TO ITS INTERSECTION WITH COEN ROAD.  TURN
 JV6331'LEFT AND PROCEED EAST ALONG COEN ROAD 0.2 MILES TO ITS INTERSECTION
 JV6331'WITH OLD ROCK ROAD.  TURN RIGHT AND PROCEED APPROXIMATELY 150 FEET TO
 JV6331'THE STATION ON THE RIGHT.  TO REACH THE AZIMUTH MARK FROM THE STATION
 JV6331'PROCEED SOUTH ALONG OLD ROCKS ROAD 0.19 MILES TO THE MARK ON THE
 JV6331'LEFT.  THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET IN
 JV6331'CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 81 COEN 1989.  THE MARK IS
 JV6331'15.2 FEET SOUTHEAST FROM THE CENTERLINE OF OLD ROCKS ROAD, 99.0 FEET
 JV6331'NORTHEAST FROM A 6 INCH CEDAR TREE, 176.0 FEET SOUTHWEST OF THE
 JV6331'CENTERLINE OF A DRIVEWAY.
 JV6331
 JV6331                          STATION RECOVERY (1990)
 JV6331
 JV6331'RECOVERED 1990
 JV6331'RECOVERED IN GOOD CONDITION.
 JV6331
 JV6331                          STATION RECOVERY (2009)
 JV6331
 JV6331'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV6331'THE CEDAR TREE IS NOW GONE. THE MARK IS 107 FEET NORTH-NORTHEAST FROM
 JV6331'CENTER OF MACADAM DRIVE TO HOUSE NUMBERED 3931. THE MARK IS NOW
 JV6331'LOCATED WITHIN LARGE PINE TREES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6212 ***********************************************************************
 HV6212  DESIGNATION -  COFFEE
 HV6212  PID         -  HV6212
 HV6212  STATE/COUNTY-  MD/QUEEN ANNES
 HV6212  COUNTRY     -  US
 HV6212  USGS QUAD   -  KENT ISLAND (2016)
 HV6212
 HV6212                         *CURRENT SURVEY CONTROL
 HV6212  ______________________________________________________________________
 HV6212* NAD 83(1991) POSITION- 38 56 28.09151(N) 076 19 20.80765(W)   ADJUSTED
 HV6212* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6212  ______________________________________________________________________
 HV6212  GEOID HEIGHT    -        -33.673 (meters)                     GEOID18
 HV6212  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 HV6212  HORZ ORDER      -  THIRD
 HV6212
 HV6212.The horizontal coordinates were established by classical geodetic methods
 HV6212.and adjusted by the National Geodetic Survey in January 1992.
 HV6212
 HV6212.The orthometric height was scaled from a topographic map.
 HV6212
 HV6212.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6212.GEOID18 height accuracy estimate available here.
 HV6212
 HV6212.Click photographs - Photos may exist for this station.
 HV6212
 HV6212.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6212
 HV6212. The following values were computed from the NAD 83(1991) position.
 HV6212
 HV6212;                    North         East     Units Scale Factor Converg.
 HV6212;SPC MD       -   141,689.789   458,739.171   MT  0.99995050   +0 25 30.9
 HV6212;SPC MD       -   464,860.58  1,505,046.76   sFT  0.99995050   +0 25 30.9
 HV6212;UTM  18      - 4,311,075.876   385,390.051   MT  0.99976174   -0 49 52.6
 HV6212
 HV6212!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6212!SPC MD       -   1.00000532  x   0.99995050  =   0.99995582
 HV6212!UTM  18      -   1.00000532  x   0.99976174  =   0.99976706
 HV6212
 HV6212:                Primary Azimuth Mark                     Grid Az
 HV6212:SPC MD       -  HERE                                     305 48 43.4
 HV6212:UTM  18      -  HERE                                     307 04 06.9
 HV6212
 HV6212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8539011075(NAD 83)
 HV6212
 HV6212|---------------------------------------------------------------------|
 HV6212| PID    Reference Object                     Distance      Geod. Az  |
 HV6212|                                                           dddmmss.s |
 HV6212| HV6191 LIVER                               397.517 METERS 03246     |
 HV6212| HV6211 HERE                                APPROX. 0.6 KM 3061414.3 |
 HV6212|---------------------------------------------------------------------|
 HV6212
 HV6212                          SUPERSEDED SURVEY CONTROL
 HV6212
 HV6212  NAD 83(1986)-  38 56 28.08750(N)    076 19 20.81987(W) AD(       ) 3
 HV6212  NAD 27      -  38 56 27.67800(N)    076 19 22.01400(W) AD(       ) 3
 HV6212  USSD        -  38 56 28.07300(N)    076 19 21.80700(W) AD(       ) 3
 HV6212
 HV6212.Superseded values are not recommended for survey control.
 HV6212
 HV6212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6212.See file dsdata.pdf to determine how the superseded data were derived.
 HV6212
 HV6212_MARKER: U = CONCRETE POST
 HV6212_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6212_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6212_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6212
 HV6212  HISTORY     - Date     Condition        Report By
 HV6212  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6212  HISTORY     - 1934     GOOD             CGS
 HV6212  HISTORY     - 1939     GOOD             CGS
 HV6212  HISTORY     - 1940     GOOD             CGS
 HV6212  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6212
 HV6212                          STATION DESCRIPTION
 HV6212
 HV6212'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6212'STATION IS ON THE SOUTHWESTERN SHORE OF WAREHOUSE CREEK, ON A POINT
 HV6212'ABOUT 1/2 MILE NW OF COX CREEK, ON A MARSH, ABOUT 1 FOOT ABOVE
 HV6212'HIGH WATER, 9 YARDS S OF POINT OF SHORE, 13 YARDS SW OF SHORE, 17
 HV6212'YARDS WNW OF SHORE AT FENCE, 12 YARDS N OF FENCE, 29 YARDS ENE OF
 HV6212'CORNER OF FENCE, AND 250 YARDS N BY E OF HOUSE WITH TWO
 HV6212'CHIMNEYS.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP
 HV6212'OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6212'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 6
 HV6212'INCHES ABOVE SURFACE OF GROUND.  THE LETTERS M.S.F.C. AND
 HV6212'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS
 HV6212'CENTER OF 2-INCH DRAINTILE PIPE BURIED WITH THE TOP 2 INCHES
 HV6212'BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6212'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 HV6212'FENCE POST, 14.14 METERS (46.4 FEET), S 12 DEG 14 MIN W.  LEFT
 HV6212'PEAK OF BARN, 1-1/4 MILES, N 30 DEG 57 MIN W.  LEFT CHIMNEY OF
 HV6212'BRICK HOUSE, 1-1/4 MILES, N 2 DEG 06 MIN W.  W CHIMNEY OF HOUSE, 1
 HV6212'1/4 MILES, N 46 DEG 55 MIN E.  NEAR PEAK OF HOUSE, 1-1/4
 HV6212'MILES, N 60 DEG 00 MIN E.  LEFT PEAK OF HOUSE, 1-1/8 MILES, N 82
 HV6212'DEG 25 MIN E.  CUPOLA ON BARN, 1-1/2 MILES, S 73 DEG 13 MIN E.
 HV6212'NAIL IN BLAZE IN FENCE POST, 16.57 METERS (54.4 FEET), S 60 DEG
 HV6212'31 MIN E.  NAIL IN BLAZE IN FENCE POST, 12.29 METERS (40.3 FEET),
 HV6212'S 13 DEG 11 MIN E.  NEAR CORNER OF HOUSE, 250 YARDS, S 7 DEG 44 MIN E.
 HV6212
 HV6212                          STATION RECOVERY (1934)
 HV6212
 HV6212'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 HV6212'STATION RECOVERED.  STATION IS ON MARSHY POINT OVERGROWN WITH
 HV6212'MYRTLE BUSHES.  SMALL DUCK BLIND IS ON TIP OF POINT.  STATION IS 5
 HV6212'1/2 METERS IN FROM SHORE AND 20-1/2 METERS NE OF 8-INCH PERSIMMON
 HV6212'TREE.  MARKER IS M.S.F.C. MONUMENT IN FAIR CONDITION.
 HV6212
 HV6212                          STATION RECOVERY (1939)
 HV6212
 HV6212'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV6212'ON SOUTHWESTERN SHORE OF WAREHOUSE CREEK, ON POINT ABOUT 1/2 MILE
 HV6212'NW OF COX CREEK, IN LOW BRUSH, ABOUT 10 YARDS S OF MARSH POINT
 HV6212'AND ABOUT 150 YARDS N OF TWO-STORY WHITE HOUSE WITH GREEN ROOF.
 HV6212
 HV6212                          STATION RECOVERY (1940)
 HV6212
 HV6212'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6212'STATION MARK RECOVERED IN FAIR CONDITION.  IT IS LOCATED ON
 HV6212'SOUTHWESTERN SHORE OF WAREHOUSE CREEK, ON A MARSHY POINT ABOUT 1/2
 HV6212'MILE NW OF COX CREEK, 6 YARDS S OF SHORE, 22-1/2 YARDS NE OF 8-INCH
 HV6212'PERSIMMON TREE, AND 22 YARDS NW OF POINT OF MYRTLE BUSHES.
 HV6212
 HV6212                          STATION RECOVERY (1960)
 HV6212
 HV6212'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6212'STATION COULD NOT BE FOUND IN 3 HOUR SEARCH BY 3 MEN.  EROSION OF
 HV6212'SHORE IS EVIDENT.  TREES, FENCE USED AS REFERENCES ARE MISSING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4711 ***********************************************************************
 JV4711  DESIGNATION -  COFFMAN
 JV4711  PID         -  JV4711
 JV4711  STATE/COUNTY-  MD/WASHINGTON
 JV4711  COUNTRY     -  US
 JV4711  USGS QUAD   -  HAGERSTOWN (2016)
 JV4711
 JV4711                         *CURRENT SURVEY CONTROL
 JV4711  ______________________________________________________________________
 JV4711* NAD 83(1991) POSITION- 39 39 52.06830(N) 077 42 59.42346(W)   ADJUSTED
 JV4711* NAVD 88 ORTHO HEIGHT -   184.    (meters)      604.    (feet) SCALED
 JV4711  ______________________________________________________________________
 JV4711  GEOID HEIGHT    -        -34.181 (meters)                     GEOID18
 JV4711  LAPLACE CORR    -          3.46  (seconds)                    DEFLEC18
 JV4711  HORZ ORDER      -  SECOND
 JV4711
 JV4711.The horizontal coordinates were established by classical geodetic methods
 JV4711.and adjusted by the National Geodetic Survey in January 1992.
 JV4711
 JV4711.The orthometric height was scaled from a topographic map.
 JV4711
 JV4711.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4711.GEOID18 height accuracy estimate available here.
 JV4711
 JV4711.Click photographs - Photos may exist for this station.
 JV4711
 JV4711.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4711
 JV4711. The following values were computed from the NAD 83(1991) position.
 JV4711
 JV4711;                    North         East     Units Scale Factor Converg.
 JV4711;SPC MD       -   222,016.501   338,514.215   MT  1.00004456   -0 26 58.9
 JV4711;SPC MD       -   728,399.14  1,110,608.72   sFT  1.00004456   -0 26 58.9
 JV4711;SPC PA S     -    36,767.859   602,874.240   MT  1.00005292   +0 01 18.2
 JV4711;SPC PA S     -   120,629.22  1,977,929.90   sFT  1.00005292   +0 01 18.2
 JV4711;SPC WV N     -   130,794.619   753,023.117   MT  0.99994097   +1 08 14.9
 JV4711;SPC WV N     -   429,115.35  2,470,543.34   sFT  0.99994097   +1 08 14.9
 JV4711;UTM  18      - 4,394,044.486   266,972.514   MT  1.00026859   -1 44 04.9
 JV4711
 JV4711!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4711!SPC MD       -   0.99997653  x   1.00004456  =   1.00002109
 JV4711!SPC PA S     -   0.99997653  x   1.00005292  =   1.00002945
 JV4711!SPC WV N     -   0.99997653  x   0.99994097  =   0.99991750
 JV4711!UTM  18      -   0.99997653  x   1.00026859  =   1.00024511
 JV4711
 JV4711:                Primary Azimuth Mark                     Grid Az
 JV4711:SPC MD       -  COFFMAN AZ MK                            310 59 55.9
 JV4711:SPC PA S     -  COFFMAN AZ MK                            310 31 38.8
 JV4711:SPC WV N     -  COFFMAN AZ MK                            309 24 42.1
 JV4711:UTM  18      -  COFFMAN AZ MK                            312 17 01.9
 JV4711
 JV4711_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6697294044(NAD 83)
 JV4711
 JV4711|---------------------------------------------------------------------|
 JV4711| PID    Reference Object                     Distance      Geod. Az  |
 JV4711|                                                           dddmmss.s |
 JV4711| CK6838 COFFMAN RM 1                         25.064 METERS 00944     |
 JV4711| JV4704 WMH 9                                37.285 METERS 08656     |
 JV4711| JV4715 HAGERSTOWN ST JOHNS LUTH CH         APPROX. 2.7 KM 1895227.7 |
 JV4711| JV4692 HAGERSTOWN VICTOR PROD CO TANK      APPROX. 4.5 KM 1903905.0 |
 JV4711| JV4710 HAGERSTOWN ST JOHNS EPIS CH         APPROX. 2.5 KM 1974937.3 |
 JV4711| JV4714 HAGERSTOWN ST MARYS CATH CH         APPROX. 2.3 KM 1982018.2 |
 JV4711| JV4713 HAGERSTOWN RADIO STA WJEJ MAST      APPROX. 0.9 KM 2955859.1 |
 JV4711| CK6837 COFFMAN AZ MK                                      3103257.0 |
 JV4711| CK6839 COFFMAN RM 3                         29.921 METERS 31907     |
 JV4711| JV4716 HGR HAGERSTOWN AIRPORT BEACON       APPROX. 4.8 KM 3531707.6 |
 JV4711|---------------------------------------------------------------------|
 JV4711
 JV4711                          SUPERSEDED SURVEY CONTROL
 JV4711
 JV4711  NAD 83(1986)-  39 39 52.06771(N)    077 42 59.43442(W) AD(       ) 2
 JV4711  NAD 27      -  39 39 51.72400(N)    077 43 00.45900(W) AD(       ) 2
 JV4711
 JV4711.Superseded values are not recommended for survey control.
 JV4711
 JV4711.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4711.See file dsdata.pdf to determine how the superseded data were derived.
 JV4711
 JV4711_MARKER: DS = TRIANGULATION STATION DISK
 JV4711_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4711_STAMPING: COFFMAN 1955
 JV4711_MARK LOGO: CGS
 JV4711
 JV4711  HISTORY     - Date     Condition        Report By
 JV4711  HISTORY     - 1955     MONUMENTED       CGS
 JV4711  HISTORY     - 1957     GOOD             CGS
 JV4711  HISTORY     - 1967     GOOD             CGS
 JV4711  HISTORY     - 20080312 MARK NOT FOUND   GEOCAC
 JV4711  HISTORY     - 20080427 GOOD             GEOCAC
 JV4711
 JV4711                          STATION DESCRIPTION
 JV4711
 JV4711'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4711'THE STATION IS LOCATED ABOUT 1.5 MILES NORTH OF THE CENTER OF
 JV4711'HAGERSTOWN, 0.1 MILE EAST OF U.S. HIGHWAY 11, 128 FEET
 JV4711'SOUTH-SOUTHEAST OF THE SOUTHWEST CORNER OF THE WASHINGTON
 JV4711'COUNTY NICODDIMUS OLD FOLKS HOME, 10 FEET SOUTH OF A BOARD FENCE
 JV4711'AND 2 FEET NORTH OF A WHITE 4 IN BY 4 IN WITNESS POST.
 JV4711'
 JV4711'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV4711'U.S. HIGHWAY 11 IN HAGERSTOWN, GO NORTH ON U.S. HIGHWAY 11 FOR
 JV4711'1.4 MILES TO THE COFFMAN HEALTH CENTER ON THE RIGHT, TURN RIGHT
 JV4711'(EAST) ON THE NORTH SIDE OF THE HEALTH CENTER AND GO FOR 0.1 MILE
 JV4711'TO FORKS, TURN RIGHT AND GO FOR ABOUT 50 YARDS TO THE STATION AS
 JV4711'DESCRIBED ABOVE.
 JV4711'
 JV4711'TO REACH THE AZIMUTH MARK FROM THE COFFMAN HEALTH CENTER, GO
 JV4711'NORTH ON U.S. HIGHWAY 11 FOR 0.15 MILE TO A MACADAM ROAD ON THE
 JV4711'LEFT, TURN LEFT (WEST) AND GO FOR 0.05 MILE TO THE MARK ON THE
 JV4711'RIGHT AS DESCRIBED.
 JV4711'
 JV4711'THE STATION MARK IS FLUSH WITH THE SURFACE OF THE GROUND, AND
 JV4711'THE DISK IS STAMPED COFFMAN 1955.
 JV4711'
 JV4711'REFERENCE MARK 1 IS 63 FEET NORTH OF THE BOARD FENCE, 46 FEET
 JV4711'SOUTH-SOUTHEAST OF THE SOUTHWEST CORNER OF THE OLD FOLKS HOME,
 JV4711'AND 15 FEET EAST-NORTHEAST OF A 15-INCH TREE.  THE MARK IS FLUSH
 JV4711'WITH THE GROUND, AND THE DISK IS STAMPED COFFMAN NO 1 1955.
 JV4711'
 JV4711'MARYLAND STATE SURVEY MARK WMH 9 WAS USED AS REFERENCE MARK
 JV4711'2.  IT IS 22 FEET EAST-NORTHEAST OF A POWERLINE POLE, AND 4 FEET
 JV4711'NORTH OF BOARD FENCE.  THE MARK IS A STANDARD MARYLAND STATE
 JV4711'SURVEY DISK SET IN CONCRETE IN A 6 INCH TILE, WHICH PROJECTS 2
 JV4711'INCHES, AND THE DISK IS STAMPED WMH 9.
 JV4711'
 JV4711'THE AZIMUTH MARK IS 12 FEET NORTH OF THE CENTER OF A CEMETERY ROAD,
 JV4711'AND 1.5 FEET SOUTHEAST OF AN 18-INCH ELM TREE.  THE MARK IS FLUSH
 JV4711'WITH THE GROUND, AND THE DISK IS STAMPED COFFMAN 1955.
 JV4711'
 JV4711'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4711
 JV4711                          STATION RECOVERY (1957)
 JV4711
 JV4711'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV4711'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS EXCEPT
 JV4711'REFERENCE MARK NO. 1 WERE FOUND TO BE IN GOOD CONDITION.  REFERENCE
 JV4711'MARK NO. 1 HAD BEEN PUSHED OVER BY A GRADER SO REFERENCE MARK
 JV4711'NO. 3 WAS ESTABLISHED.  REFERENCE MARK NO. 3 IS 23 FEET
 JV4711'SOUTHEAST OF THE JUNCTION OF TWO TRACK ROADS.  THE MARK IS FLUSH
 JV4711'WITH THE GROUND AND THE DISK IS STAMPED COFFMAN NO 3 1955.  NOTE
 JV4711'11A.  A DIFFERENCE WAS FOUND IN THE DISTANCE TO WMH 9 (RM 2)
 JV4711'AND IN THE DIRECTION TO WMH 9 (RM 2) AND THE AZIMUTH MARK.  TWO
 JV4711'SETS OF OBSERVATIONS WERE TAKEN ON THE AZIMUTH MARK AND
 JV4711'THE RESULTS MEANED.  DUE TO CONSTRUCTION OF A NEW BUILDING
 JV4711'THE AZIMUTH MARK IS NOT V.G.  ORIGINAL DESCRIPTION IS
 JV4711'ADEQUATE EXCEPT THE BUILDINGS AND THE FENCE MENTIONED IN
 JV4711'THE DESCRIPTION HAVE BEEN TORN DOWN.
 JV4711'
 JV4711'1957 OBSERVATIONS TAKEN FROM A 90 FOOT TOWER.
 JV4711
 JV4711                          STATION RECOVERY (1967)
 JV4711
 JV4711'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JCB)
 JV4711'STATION WAS RECOVERED AS DESCRIBED BY W.F.D. IN 1955 AND THE
 JV4711'RECOVERY NOTE OF J.C.E. IN 1957 AND ALL MARKS WERE FOUND TO BE
 JV4711'IN GOOD CONDITION.  THE AREA HAS BEEN PLANTED IN SMALL EVERGREEN
 JV4711'TREES AND THE STATION IS NOW 110 FEET SOUTH OF POLE NUMBER 2406
 JV4711'AND 100 FEET SOUTHEAST OF POLE NUMBER 2.  REFERENCE MARK NO. 3 IS
 JV4711'45 FEET SOUTHWEST OF POLE NUMBER 2406.
 JV4711'
 JV4711'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4711'IN HAGERSTOWN.
 JV4711
 JV4711                          STATION RECOVERY (2008)
 JV4711
 JV4711'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV4711'ALL MARKS WERE SEARCHED BUT NOT RECOVERED.  POLE 2406 AND POLE 2 ARE
 JV4711'IN A N-S LINE.  SUGGEST 110 FEET S OF POLE 2406 AND 100 FEET NE OF
 JV4711'POLE 2 TO BE MORE COMPLIANT WITH LAT. AND LONG.  ALL MARK LOCATIONS
 JV4711'ARE IN A GRASSY AREA BUT NONE ARE VISIBLE ON THE SURFACE.  AZMUTH MARK
 JV4711'WAS SEARCHED BUT NOT RECOVERED.
 JV4711
 JV4711                          STATION RECOVERY (2008)
 JV4711
 JV4711'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JV4711'STATION AND REFERENCE MARKS WERE FOUND IN GOOD CONDITION - ALL ARE
 JV4711'ABOUT 2 INCHES BELOW GROUND LEVEL.
 JV4711'
 JV4711'NOTE - MAIN STATION IS 18 FEET NE OF A SINGLE 24-INCH PINE IN A STAND
 JV4711'OF MAPLE TREES RUNNING ROUGHLY E-W.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5886 ***********************************************************************
 JV5886  DESIGNATION -  COGGINS 2
 JV5886  PID         -  JV5886
 JV5886  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5886  COUNTRY     -  US
 JV5886  USGS QUAD   -  LAUREL (2016)
 JV5886
 JV5886                         *CURRENT SURVEY CONTROL
 JV5886  ______________________________________________________________________
 JV5886* NAD 83(1991) POSITION- 39 05 46.24849(N) 076 51 42.56707(W)   ADJUSTED
 JV5886* NAVD 88 ORTHO HEIGHT -    70.7   (meters)      232.    (feet) VERTCON3
 JV5886  ______________________________________________________________________
 JV5886  GEOID HEIGHT    -        -32.222 (meters)                     GEOID18
 JV5886  LAPLACE CORR    -         -4.76  (seconds)                    DEFLEC18
 JV5886  HORZ ORDER      -  SECOND
 JV5886
 JV5886.The horizontal coordinates were established by classical geodetic methods
 JV5886.and adjusted by the National Geodetic Survey in January 1992.
 JV5886
 JV5886.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5886.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5886
 JV5886.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5886.GEOID18 height accuracy estimate available here.
 JV5886
 JV5886.Click photographs - Photos may exist for this station.
 JV5886
 JV5886.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5886
 JV5886. The following values were computed from the NAD 83(1991) position.
 JV5886
 JV5886;                    North         East     Units Scale Factor Converg.
 JV5886;SPC MD       -   158,692.340   411,952.936   MT  0.99995722   +0 05 12.2
 JV5886;SPC MD       -   520,643.12  1,351,548.92   sFT  0.99995722   +0 05 12.2
 JV5886;UTM  18      - 4,329,099.883   338,994.008   MT  0.99991920   -1 10 27.7
 JV5886
 JV5886!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5886!SPC MD       -   0.99999397  x   0.99995722  =   0.99995119
 JV5886!UTM  18      -   0.99999397  x   0.99991920  =   0.99991317
 JV5886
 JV5886:                Primary Azimuth Mark                     Grid Az
 JV5886:SPC MD       -  LAUREL RACE COURSE TANK                  067 18 32.8
 JV5886:UTM  18      -  LAUREL RACE COURSE TANK                  068 34 12.7
 JV5886
 JV5886_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3899429099(NAD 83)
 JV5886
 JV5886|---------------------------------------------------------------------|
 JV5886| PID    Reference Object                     Distance      Geod. Az  |
 JV5886|                                                           dddmmss.s |
 JV5886| JV5874 LAUREL RACE COURSE TANK             APPROX. 3.4 KM 0672345.0 |
 JV5886| CB1095 COGGINS RM 1                         62.179 METERS 09302     |
 JV5886| CB1093 COGGINS 2 AZ MK                                    0964713.9 |
 JV5886| CB1094 COGGINS 2 RM 1                       37.380 METERS 16114     |
 JV5886| CB1097 COGGINS RM 2                        101.864 METERS 17331     |
 JV5886| JV5883 LAUREL GUDE BROS CO STACK           APPROX. 1.2 KM 1995255.3 |
 JV5886| JV5885 LAUREL WATER TANK=COGGINS            27.547 METERS 26120     |
 JV5886| CB1096 COGGINS 2 RM 2                       28.422 METERS 27826     |
 JV5886| JV5880 LAUREL MUN TANK                     APPROX. 1.3 KM 3501203.4 |
 JV5886|---------------------------------------------------------------------|
 JV5886
 JV5886                          SUPERSEDED SURVEY CONTROL
 JV5886
 JV5886  NAD 83(1986)-  39 05 46.24718(N)    076 51 42.57712(W) AD(       ) 2
 JV5886  NAD 27      -  39 05 45.85603(N)    076 51 43.67714(W) AD(       ) 2
 JV5886  NGVD 29 (07/19/86)   70.9    (m)          233.     (f) VERT ANG       
 JV5886
 JV5886.Superseded values are not recommended for survey control.
 JV5886
 JV5886.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5886.See file dsdata.pdf to determine how the superseded data were derived.
 JV5886
 JV5886_MARKER: DS = TRIANGULATION STATION DISK
 JV5886_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5886_STAMPING: COGGINS 2 1942
 JV5886_MARK LOGO: CGS
 JV5886_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5886+STABILITY: SURFACE MOTION
 JV5886
 JV5886  HISTORY     - Date     Condition        Report By
 JV5886  HISTORY     - 1942     MONUMENTED       CGS
 JV5886  HISTORY     - 1956     MARK NOT FOUND   CGS
 JV5886  HISTORY     - 1957     GOOD             CGS
 JV5886  HISTORY     - 1970     GOOD             NGS
 JV5886
 JV5886                          STATION DESCRIPTION
 JV5886
 JV5886'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 JV5886'THE STATION IS LOCATED ON THE GROUNDS OF THE LAUREL SANITARIUM WHICH
 JV5886'IS 1 MILE BY ROAD S OF THE TOWN OF LAUREL.  IT IS BACK OF THE
 JV5886'BUILDINGS, 90.37 FEET NE OF A SILVER WATER TANK (COGGINS W.S.S.D.).
 JV5886'THE MARK IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED COGGINS
 JV5886'2 1942.
 JV5886'
 JV5886'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV5886'DISKS SET IN CONCRETE, AS DESCRIBED.
 JV5886'
 JV5886'REFERENCE MARK NO.1 IS SE OF THE STATION IN THE EDGE OF THE LAWN
 JV5886'AT THE N SIDE OF A DRIVEWAY.  IT IS FLUSH WITH THE GROUND AND THE
 JV5886'DISK IS STAMPED COGGINS 2 NO.1 1942.
 JV5886'
 JV5886'REFERENCE MARK NO.2 IS W OF THE STATION ABOUT 5 FEET NW OF THE
 JV5886'NE LEG OF THE WATER TANK.  IT PROJECTS ABOUT 4 INCHES AND THE DISK
 JV5886'IS STAMPED COGGINS 2 NO.2 1942.
 JV5886'
 JV5886'THE AZIMUTH MARK IS LOCATED ABOUT 0.4 MILE E OF THE STATION.  IT IS
 JV5886'ON TOP OF A LOW CUT ABOUT 15 FEET W OF THE W EDGE OF THE PAVEMENT OF
 JV5886'U.S. HIGHWAY 1.  IT PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED
 JV5886'COGGINS 2 1942.  TO REACH THE AZIMUTH MARK FROM THE ENTRANCE TO
 JV5886'THE LAUREL SANITARIUM GO N 0.15 MILE TO THE AZIMUTH MARK ON THE
 JV5886'LEFT.
 JV5886'
 JV5886'THE WATER TANK ON THE GROUNDS OF THE SANITARIUM IS A STATION OF THE
 JV5886'WASHINGTON SUBURBAN SANITATION DEPARTMENT.  TWO REFERENCE MARKS OF
 JV5886'THIS STATION WERE ALSO RECOVERED.  THE WATER TANK IS A 4-LEGGED
 JV5886'STEEL STRUCTURE WITH AN ELEVATED TANK.  THE CENTER OF THE BALL AT
 JV5886'THE TOP OF THE TANK WAS THE W.S.S.D. STATION.  A TRAVERSE
 JV5886'CONNECTION WAS MADE TO THIS TANK.
 JV5886'
 JV5886'W.S.S.D. REFERENCE MARK NO.1 IS SET FLUSH WITH THE GROUND IN THE
 JV5886'TOP OF A 4-INCH PIPE.  THE DISK IS STAMPED COGGINS MAR 1939 NO.1.
 JV5886'IT IS LOCATED ABOUT 10 FEET E OF A PAVED DRIVEWAY, 40 FEET N OF
 JV5886'CORNER UNDER AN OUTSIDE STAIRWAY AT THE W SIDE OF THE BUILDING.
 JV5886'
 JV5886'W.S.S.D. REFERENCE MARK NO.2 IS LOCATED SSE OF THE STATION
 JV5886'IN THE N CORNER OF A TRIANGLE FORMED BY THE INTERSECTION DRIVEWAYS
 JV5886'ABOUT 30 YARDS S OF THE SANITARIUM BUILDINGS, 30 FEET N OF A PUMP
 JV5886'AND 25 FEET W OF A FIRE HYDRANT.  IT IS MARKED BY A W.S.S.D. DISK
 JV5886'STAMPED COGGINS MAR 1939 NO.2 WHICH IS SET FLUSH WITH THE GROUND
 JV5886'AND IN TOP OF A 4-INCH PIPE.
 JV5886'
 JV5886'A 15-FOOT STAND WILL SEE A 100-FOOT LIGHT AT GUILFORD.
 JV5886'
 JV5886'A 50-FOOT TOWER WILL SEE A 50-FOOT LIGHT AT BURT.
 JV5886'
 JV5886'A 50-FOOT TOWER WILL SEE A 77-FOOT LIGHT AT PRINCE.
 JV5886'
 JV5886'A 77-FOOT TOWER WILL SEE A 60-FOOT LIGHT AT STATION 300 1933.
 JV5886'
 JV5886'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT PATUX.
 JV5886'
 JV5886'A 90-FOOT TOWER WILL SEE A 4-FOOT LIGHT AT RENN (W.S.S.D.).
 JV5886'
 JV5886'HEIGHT OF LIGHT ABOVE STATION MARK - 30 METERS.
 JV5886
 JV5886                          STATION RECOVERY (1956)
 JV5886
 JV5886'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (CRS)
 JV5886'LETTER OF MR. C.H. BOEHM, CHAS. R. SCRIVENER CO., BALTIMORE, MD.,
 JV5886'DATED JAN. 19, 1956--
 JV5886'
 JV5886'THE AZIMUTH MARK WAS REMOVED TO PERMIT CONSTRUCTION OF A SHOPPING
 JV5886'CENTER.  NO NEW AZIMUTH MARK WAS SET.
 JV5886'
 JV5886'AN AZIMUTH MARK CAN BE OBTAINED FROM THE LAUREL MUNICIPAL WATER
 JV5886'TANK WHICH IS VISIBLE FROM THE GROUND.
 JV5886'
 JV5886'AZIMUTH MARK DISK STAMPED COGGINS 2 1942 RECEIVED AT USC AND GS
 JV5886'2/27/56.
 JV5886
 JV5886                          STATION RECOVERY (1957)
 JV5886
 JV5886'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5886'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO BE
 JV5886'IN GOOD CONDITION.  THE AZIMUTH MARK WAS NOT RECOVERED AND IT IS
 JV5886'BELIEVED TO BE DESTROYED.
 JV5886'
 JV5886'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV5886
 JV5886                          STATION RECOVERY (1970)
 JV5886
 JV5886'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5886'RM 1 TO RM 2 OBSTRUCTED.
 JV5886'
 JV5886'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED AS DESCRIBED
 JV5886'BY J.C. ELLERBE IN 1957 AND ALL MARKS WERE IN GOOD CONDITION.
 JV5886'
 JV5886'A GEODIMETER TRAVERSE WAS MADE TO TRIANGULATION STEWARD FOR A
 JV5886'POSITION CHECK ONLY, DISTANCE BEING 1756.794 METERS.
 JV5886'
 JV5886'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1 MILE SOUTH OF
 JV5886'LAUREL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7043 ***********************************************************************
 HV7043  DESIGNATION -  COHOUCK 1908
 HV7043  PID         -  HV7043
 HV7043  STATE/COUNTY-  MD/ST MARYS
 HV7043  COUNTRY     -  US
 HV7043  USGS QUAD   -  ROCK POINT (2016)
 HV7043
 HV7043                         *CURRENT SURVEY CONTROL
 HV7043  ______________________________________________________________________
 HV7043* NAD 83(1993) POSITION- 38 21 07.33654(N) 076 50 16.33098(W)   ADJUSTED
 HV7043* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7043  ______________________________________________________________________
 HV7043  GEOID HEIGHT    -        -33.656 (meters)                     GEOID18
 HV7043  LAPLACE CORR    -         -1.61  (seconds)                    DEFLEC18
 HV7043  HORZ ORDER      -  THIRD
 HV7043
 HV7043.The horizontal coordinates were established by classical geodetic methods
 HV7043.and adjusted by the National Geodetic Survey in November 1994.
 HV7043
 HV7043.The orthometric height was scaled from a topographic map.
 HV7043
 HV7043.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7043.GEOID18 height accuracy estimate available here.
 HV7043
 HV7043.Click photographs - Photos may exist for this station.
 HV7043
 HV7043.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7043
 HV7043. The following values were computed from the NAD 83(1993) position.
 HV7043
 HV7043;                    North         East     Units Scale Factor Converg.
 HV7043;SPC MD       -    76,091.762   414,171.828   MT  0.99999135   +0 06 06.3
 HV7043;SPC MD       -   249,644.39  1,358,828.74   sFT  0.99999135   +0 06 06.3
 HV7043;UTM  18      - 4,246,474.007   339,407.964   MT  0.99991762   -1 08 26.3
 HV7043
 HV7043!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7043!SPC MD       -   1.00000517  x   0.99999135  =   0.99999652
 HV7043!UTM  18      -   1.00000517  x   0.99991762  =   0.99992279
 HV7043
 HV7043:                Primary Azimuth Mark                     Grid Az
 HV7043:SPC MD       -  KEY 1908                                 003 22 58.4
 HV7043:UTM  18      -  KEY 1908                                 004 37 31.0
 HV7043
 HV7043_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3940746474(NAD 83)
 HV7043
 HV7043|---------------------------------------------------------------------|
 HV7043| PID    Reference Object                     Distance      Geod. Az  |
 HV7043|                                                           dddmmss.s |
 HV7043| HV7039 KEY 1908                            APPROX. 1.3 KM 0032904.7 |
 HV7043| HV7041 PERRY 1908                          APPROX. 1.1 KM 1265445.4 |
 HV7043|---------------------------------------------------------------------|
 HV7043
 HV7043                          SUPERSEDED SURVEY CONTROL
 HV7043
 HV7043  NAD 83(1991)-  38 21 07.33612(N)    076 50 16.33515(W) AD(       ) 3
 HV7043  NAD 83(1986)-  38 21 07.33648(N)    076 50 16.34671(W) AD(       ) 3
 HV7043  NAD 27      -  38 21 06.82300(N)    076 50 17.41900(W) AD(       ) 3
 HV7043  USSD        -  38 21 07.58600(N)    076 50 17.50200(W) AD(       ) 3
 HV7043
 HV7043.Superseded values are not recommended for survey control.
 HV7043
 HV7043.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7043.See file dsdata.pdf to determine how the superseded data were derived.
 HV7043
 HV7043_MARKER: H = DRILL HOLE
 HV7043_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7043_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7043+STABILITY: SURFACE MOTION
 HV7043
 HV7043  HISTORY     - Date     Condition        Report By
 HV7043  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7043  HISTORY     - 1942     GOOD             CGS
 HV7043  HISTORY     - 1942     GOOD             CGS
 HV7043  HISTORY     - 1958     GOOD             CGS
 HV7043  HISTORY     - 1973     GOOD             MDDNR
 HV7043
 HV7043                          STATION DESCRIPTION
 HV7043
 HV7043'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7043'ON THE EASTERN SHORE OF WICOMICO RIVER ON COHOUCK POINT, ON THE
 HV7043'NORTHERN SIDE OF ENTRANCE TO CHAPTICO BAY, ABOUT 6 FEET ABOVE
 HV7043'HIGH-WATER MARK, 12 YARDS E OF EDGE OF BANK, 35 YARDS S OF EDGE OF
 HV7043'BANK, 85 YARDS NE OF EXTREME POINT, AND ABOUT 25 YARDS N OF MARSH.
 HV7043'STATION MARK IS CENTER OF STANDARD MONUMENT OF MARYLAND SHELL FISH
 HV7043'SURVEY, WHICH IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES
 HV7043'SQUARE AT THE TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME
 HV7043'MOLD AND SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH
 HV7043'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HV7043'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE CENTER
 HV7043'HOLE IS ALWAYS AT THE CENTER OF THE MONUMENT AND IF THE MARKING
 HV7043'HAS BEEN BROKEN OFF WITHOUT DISTURBING THE BOTTOM, THE CENTER OF
 HV7043'THE SQUARE SECTION MAY BE USED AS THE LOCATION OF THE STATION.
 HV7043'THE MONUMENT IS SET VERTICALLY IN THE GROUND, WITH TOP PROJECTING
 HV7043'ABOUT 3 TO 5 INCHES ABOVE THE SURFACE.  DISTANCES AND BEARINGS FROM
 HV7043'THE STATION TO VARIOUS POINTS OF REFERENCE ARE AS
 HV7043'FOLLOWS--CHIMNEY ON FLAT-ROOF HOUSE NEAR MOUTH OF BOWMANS CREEK, 2
 HV7043'MILES, S 50 DEG 25 MIN W.  CHIMNEY ON FAR END OF HOUSE, 1-3/8
 HV7043'MILES, S 85 DEG 12 MIN W.  CHIMNEY ON HOUSE ON PILES, 1-1/8 MILES,
 HV7043'N 85 DEG 38 MIN W.  PEAK OF FRONT GABLE OF HOUSE ON RIDGE, 2-1/4
 HV7043'MILES, N 3 DEG 40 MIN W.  NEAREST CHIMNEY ON BUNK HOUSE, 1
 HV7043'MILE, N 3 DEG 56 MIN E.  NEAR PEAK OF ROOF OF BARN, 1 MILE, N 30
 HV7043'DEG 7 MIN E.  CHIMNEY OUTSIDE NEAR END OF 2 1/2-STORY HOUSE, 3/4
 HV7043'MILE, S 47 DEG 33 MIN E.  RIGHT CHIMNEY OF LYONS HOUSE NEAR MILLS
 HV7043'POINT, 1-1/8 MILES, S 5 DEG 2 MIN E.
 HV7043
 HV7043                          STATION RECOVERY (1942)
 HV7043
 HV7043'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV7043'STATION RECOVERED AS DESCRIBED AND IS LOCATED ON LAND NOW OWNED BY
 HV7043'T.W. PHILLIPS OF BUTLER, PA.
 HV7043'
 HV7043'REACHED FROM LA PLATA BY GOING S ON U.S. HIGHWAY 301 FOR 9.1
 HV7043'MILES, THENCE LEFT, E, AT LARGE GRAY SCHOOLHOUSE, GO 1.5 MILES
 HV7043'TAKE RIGHT FORK, GO 1.9 MILES TO NEWPORT, TAKE RIGHT FORK
 HV7043'(PAVED), GO 2.2 MILES TO WICOMICO, CONTINUE 0.7 MILE, KEEP
 HV7043'STRAIGHT AHEAD, GO 1.7 MILES TO BUDDS CR. STORE, KEEP RIGHT-HAND
 HV7043'PAVED ROAD, GO 2.3 MILES AND TURN RIGHT INTO PRIVATE ESTATE (WHITE
 HV7043'BOARD FENCE AND 2 LARGE BRICK GATEPOSTS), GO 0.4 MILE, TAKE RIGHT
 HV7043'FORK, GO 1.2 MILES, TURN LEFT THROUGH NET WIRE GATE, CONTINUE S ON
 HV7043'FARM ROAD FOR 1.5 MILES TO END OF ROAD AT MARK, STATION SITE IS
 HV7043'MARKED WITH SIGNAL CONSISTING OF 10-FOOT POLE WITH LARGE TIN CAN
 HV7043'ON TOP AND CAN BE SEEN FROM END OF TRUCK TRAVEL, 1/4 MILE DISTANT.
 HV7043
 HV7043                          STATION RECOVERY (1942)
 HV7043
 HV7043'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7043'STATION RECOVERED AS DESCRIBED WITH THE EXCEPTIONS NOTED BELOW--
 HV7043'
 HV7043'(1) THE STATION IS 5 YARDS E OF EDGE OF BANK, INSTEAD OF 12 YARDS.
 HV7043'
 HV7043'(2) 60.7 METERS W OF EDGE OF BANK IS A NEW REFERENCE.
 HV7043
 HV7043                          STATION RECOVERY (1958)
 HV7043
 HV7043'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV7043'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL
 HV7043'DESCRIPTION AND RECOVERY NOTE BY C.T.H. IN 1942 IS ADEQUATE WITH
 HV7043'THE FOLLOWING ADDITIONS--
 HV7043'
 HV7043'THE STATION IS 18.0 FEET SOUTH OF 18 INCH MULBERRY TREE (LARGEST
 HV7043'TREE IN AREA) AND 9.0 FEET EAST OF EDGE OF BANK.  THE MONUMENT
 HV7043'PROJECTS 2 INCHES ABOVE THE GROUND.
 HV7043
 HV7043                          STATION RECOVERY (1973)
 HV7043
 HV7043'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV7043'MSFC-USCS GOOD
 HV7043'
 HV7043'RECOVERED AS DESCRIBED WITH FOLLOWING CORRECTS AND ADDS STATION IS
 HV7043'NOW 4 FT FROM EDGE OF BANK WHICH IS WASHING FAST.  WITNESS POST
 HV7043'AND SIGN PLACED ON WEST SIDE OF MONUMENT.  MULBERRY TREE HAS A
 HV7043'BLAZE ON IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5010 ***********************************************************************
 HV5010  DESIGNATION -  COIN
 HV5010  PID         -  HV5010
 HV5010  STATE/COUNTY-  MD/CHARLES
 HV5010  COUNTRY     -  US
 HV5010  USGS QUAD   -  INDIAN HEAD (2016)
 HV5010
 HV5010                         *CURRENT SURVEY CONTROL
 HV5010  ______________________________________________________________________
 HV5010* NAD 83(1993) POSITION- 38 34 24.44560(N) 077 12 24.21445(W)   ADJUSTED
 HV5010* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5010  ______________________________________________________________________
 HV5010  GEOID HEIGHT    -        -32.523 (meters)                     GEOID18
 HV5010  LAPLACE CORR    -         -2.12  (seconds)                    DEFLEC18
 HV5010  HORZ ORDER      -  THIRD
 HV5010
 HV5010.The horizontal coordinates were established by classical geodetic methods
 HV5010.and adjusted by the National Geodetic Survey in November 1994.
 HV5010
 HV5010.The orthometric height was scaled from a topographic map.
 HV5010
 HV5010.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5010.GEOID18 height accuracy estimate available here.
 HV5010
 HV5010.Click photographs - Photos may exist for this station.
 HV5010
 HV5010.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5010
 HV5010. The following values were computed from the NAD 83(1993) position.
 HV5010
 HV5010;                    North         East     Units Scale Factor Converg.
 HV5010;SPC MD       -   100,677.684   381,985.698   MT  0.99996369   -0 07 47.1
 HV5010;SPC MD       -   330,306.70  1,253,231.41   sFT  0.99996369   -0 07 47.1
 HV5010;SPC VA N     - 2,101,446.009 3,612,691.666   MT  0.99994868   +0 48 25.8
 HV5010;SPC VA N     - 6,894,494.11 11,852,639.24   sFT  0.99994868   +0 48 25.8
 HV5010;UTM  18      - 4,271,753.275   307,763.067   MT  1.00005511   -1 22 34.9
 HV5010
 HV5010!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5010!SPC MD       -   1.00000499  x   0.99996369  =   0.99996867
 HV5010!SPC VA N     -   1.00000499  x   0.99994868  =   0.99995366
 HV5010!UTM  18      -   1.00000499  x   1.00005511  =   1.00006010
 HV5010
 HV5010:                Primary Azimuth Mark                     Grid Az
 HV5010:SPC MD       -  MATT                                     227 54 58.0
 HV5010:SPC VA N     -  MATT                                     226 58 45.1
 HV5010:UTM  18      -  MATT                                     229 09 45.8
 HV5010
 HV5010_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH0776371753(NAD 83)
 HV5010
 HV5010|---------------------------------------------------------------------|
 HV5010| PID    Reference Object                     Distance      Geod. Az  |
 HV5010|                                                           dddmmss.s |
 HV5010| DC6143 COIN RM 1                             7.450 METERS 00628     |
 HV5010| DC6144 COIN RM 2                            21.780 METERS 04412     |
 HV5010| HV5011 MATT                                APPROX. 3.5 KM 2274710.9 |
 HV5010|---------------------------------------------------------------------|
 HV5010
 HV5010                          SUPERSEDED SURVEY CONTROL
 HV5010
 HV5010  NAD 83(1991)-  38 34 24.44325(N)    077 12 24.22009(W) AD(       ) 3
 HV5010  NAD 83(1986)-  38 34 24.44492(N)    077 12 24.22576(W) AD(       ) 3
 HV5010  NAD 27      -  38 34 24.02400(N)    077 12 25.30400(W) AD(       ) 3
 HV5010
 HV5010.Superseded values are not recommended for survey control.
 HV5010
 HV5010.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5010.See file dsdata.pdf to determine how the superseded data were derived.
 HV5010
 HV5010_MARKER: DS = TRIANGULATION STATION DISK
 HV5010_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5010_STAMPING: COIN 1928
 HV5010_MARK LOGO: CGS
 HV5010_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5010+STABILITY: SURFACE MOTION
 HV5010
 HV5010  HISTORY     - Date     Condition        Report By
 HV5010  HISTORY     - 1928     MONUMENTED       CGS
 HV5010  HISTORY     - 1928     GOOD             CGS
 HV5010  HISTORY     - 1929     GOOD             CGS
 HV5010  HISTORY     - 1938     MARK NOT FOUND   CGS
 HV5010  HISTORY     - 1943     SEE DESCRIPTION  USACE
 HV5010  HISTORY     - 1965     MARK NOT FOUND   USACE
 HV5010
 HV5010                          STATION DESCRIPTION
 HV5010
 HV5010'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV5010'ON THE E SHORE OF THE POTOMAC RIVER ON THE FIRST POINT N OF DEEP
 HV5010'POINT, THE N ENTRANCE TO MATTAWOMAN CREEK, ON THE EDGE OF HIGH-WATER
 HV5010'LINE, BOULDERS AND COARSE GRAVEL MARK THIS POINT.  STAMPED COIN
 HV5010'1928 AND TOP FLUSH WITH GROUND.
 HV5010'
 HV5010'STATION MARK AND REFERENCE MARK NO.2 ARE STANDARD BRONZE DISKS
 HV5010'SET IN CONCRETE.
 HV5010'
 HV5010'REFERENCE MARK NO.1 IS A STANDARD BRONZE DISK SET IN FACE OF
 HV5010'BOULDER, ABOUT 2-1/2 FEET IN DIAMETER,
 HV5010'AT EDGE OF HIGH-WATER LINE AND STAMPED COIN NO.1 1928.  REFERENCE
 HV5010'MARK NO.2 IS LOCATED ON THE LOW CLAY BLUFF JUST N OF STATION,
 HV5010'PROJECTS 2 INCHES ABOVE SURFACE AND STAMPED COIN NO.2 1928.
 HV5010'
 HV5010'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV5010
 HV5010                          STATION RECOVERY (1928)
 HV5010
 HV5010'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1928 (PCD)
 HV5010'STATION IS ON THE NW SIDE OF DEEP POINT AT FOOT OF LANDSLIDE SO AS
 HV5010'TO SEE MATT AND HEAD.  STATION WAS NOT OCCUPIED.
 HV5010
 HV5010                          STATION RECOVERY (1929)
 HV5010
 HV5010'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (EBL)
 HV5010'THE STATION WAS RECOVERED AS DESCRIBED.  THE DESCRIPTION IS
 HV5010'ADEQUATE.
 HV5010'
 HV5010'REFERENCE MARK NO.2 HAS BEEN DISTURBED, AND NOW HAS ITS FACE
 HV5010'VERTICAL, BUT IS FIRMLY EMBEDDED.  IT IS IN A SMALL LANDSLIDE, NW
 HV5010'OF THE STATION.
 HV5010
 HV5010                          STATION RECOVERY (1938)
 HV5010
 HV5010'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV5010'STATION AND BOTH REFERENCE MARKS WERE NOT FOUND AFTER BRIEF
 HV5010'SEARCH.  IT IS BELIEVED THAT THESE MARKS HAVE ALL BEEN DESTROYED
 HV5010'BECAUSE OF GREAT AMOUNT OF EROSION THAT HAS TAKEN PLACE AT THIS
 HV5010'POINT.  LARGE SECTIONS OF THE BLUFF ARE CAVING OFF AND NUMEROUS
 HV5010'LARGE TREES ARE FALLING OFF AND COVERING THE SHORE LINE.  LOCAL
 HV5010'PEOPLE SAY THIS POINT HAS UNDERGONE RADICAL CHANGE WITHIN PAST
 HV5010'FEW YEARS.
 HV5010
 HV5010                          STATION RECOVERY (1943)
 HV5010
 HV5010'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1943
 HV5010'ONE OF THE STANDARD MARKERS OF THE COAST AND GEODETIC SURVEY HAS
 HV5010'BEEN FOUND ON THE E BANK OF POTOMAC RIVER AT A POINT ABOUT MIDWAY
 HV5010'BETWEEN CHANNEL BUOYS C-37 AND C-37-A.  THIS MARKER IS SET IN THE
 HV5010'USUAL CEMENT BLOCK ABOUT 1-FT. SQUARE, AND THIS BLOCK IS ATTACHED
 HV5010'TO A ROUGH CYLINDER OF CONCRETE ABOUT 2-1/2 FT. LONG AND 1 FT. IN
 HV5010'DIAMETER.  IT EVIDENTLY HAS BEEN WASHED OFF THE BANK AT SOME
 HV5010'POINT.
 HV5010'
 HV5010'IN ADDITION TO THE STANDARD MARKINGS AND ARROW, IT IS STAMPED
 HV5010'COIN NO 2 1928.
 HV5010
 HV5010                          STATION RECOVERY (1965)
 HV5010
 HV5010'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1965
 HV5010'STATION MARK FOUND DESTROYED.  R.M. 1 WAS FOUND ABOUT 5 FEET
 HV5010'RIVERWARD FROM HIGH WATER LINE AND 65.25 FEET NE OF U.S.E. STATION
 HV5010'COIN 2 MON 1371.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6729 ***********************************************************************
 JV6729  DESIGNATION -  COKESBURY
 JV6729  PID         -  JV6729
 JV6729  STATE/COUNTY-  MD/HARFORD
 JV6729  COUNTRY     -  US
 JV6729  USGS QUAD   -  EDGEWOOD (2016)
 JV6729
 JV6729                         *CURRENT SURVEY CONTROL
 JV6729  ______________________________________________________________________
 JV6729* NAD 83(2011) POSITION- 39 27 42.01081(N) 076 16 35.50316(W)   ADJUSTED
 JV6729* NAD 83(2011) ELLIP HT-    16.550 (meters)        (06/27/12)   ADJUSTED
 JV6729* NAD 83(2011) EPOCH   -  2010.00
 JV6729* NAVD 88 ORTHO HEIGHT -    49.6   (meters)      163.    (feet) VERTCON3
 JV6729  ______________________________________________________________________
 JV6729  GEOID HEIGHT    -        -33.087 (meters)                     GEOID18
 JV6729  NAD 83(2011) X  -  1,169,793.407 (meters)                     COMP
 JV6729  NAD 83(2011) Y  - -4,790,156.527 (meters)                     COMP
 JV6729  NAD 83(2011) Z  -  4,032,029.398 (meters)                     COMP
 JV6729  LAPLACE CORR    -         -2.70  (seconds)                    DEFLEC18
 JV6729
 JV6729  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6729  Standards:
 JV6729         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6729            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6729  -------------------------------------------------------------------
 JV6729  NETWORK    1.33   2.86           0.56   0.49   1.46      0.42675239
 JV6729  -------------------------------------------------------------------
 JV6729  Click here for local accuracies and other accuracy information.
 JV6729
 JV6729.The horizontal coordinates were established by GPS observations
 JV6729.and adjusted by the National Geodetic Survey in June 2012.
 JV6729
 JV6729.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6729.been affixed to the stable North American tectonic plate. See 
 JV6729.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6729
 JV6729.The horizontal coordinates are valid at the epoch date displayed above
 JV6729.which is a decimal equivalence of Year/Month/Day.
 JV6729
 JV6729.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6729.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6729
 JV6729.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6729.GEOID18 height accuracy estimate available here.
 JV6729
 JV6729.Click photographs - Photos may exist for this station.
 JV6729
 JV6729.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6729
 JV6729.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6729
 JV6729.The ellipsoidal height was determined by GPS observations
 JV6729.and is referenced to NAD 83.
 JV6729
 JV6729. The following values were computed from the NAD 83(2011) position.
 JV6729
 JV6729;                    North         East     Units Scale Factor Converg.
 JV6729;SPC MD       -   199,505.992   462,261.887   MT  1.00000206   +0 27 14.7
 JV6729;SPC MD       -   654,545.91  1,516,604.21   sFT  1.00000206   +0 27 14.7
 JV6729;UTM  18      - 4,368,788.175   390,183.298   MT  0.99974848   -0 48 41.0
 JV6729
 JV6729!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6729!SPC MD       -   0.99999740  x   1.00000206  =   0.99999946
 JV6729!UTM  18      -   0.99999740  x   0.99974848  =   0.99974588
 JV6729
 JV6729_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9018368788(NAD 83)
 JV6729
 JV6729                          SUPERSEDED SURVEY CONTROL
 JV6729
 JV6729  NAD 83(2007)-  39 27 42.01097(N)    076 16 35.50387(W) AD(2002.00) 0
 JV6729  ELLIP H (02/10/07)   16.569  (m)                       GP(2002.00)    
 JV6729  ELLIP H (09/18/02)   16.588  (m)                       GP(       ) 4 2
 JV6729  NAD 83(1991)-  39 27 42.01044(N)    076 16 35.50401(W) AD(       ) 1
 JV6729  ELLIP H (01/27/92)   16.527  (m)                       GP(       ) 4 1
 JV6729  NAD 83(1986)-  39 27 42.00491(N)    076 16 35.51095(W) AD(       ) 1
 JV6729  NGVD 29 (06/18/91)   49.9    (m)  UNKNOWN  model used  GPS OBS        
 JV6729
 JV6729.Superseded values are not recommended for survey control.
 JV6729
 JV6729.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6729.See file dsdata.pdf to determine how the superseded data were derived.
 JV6729
 JV6729_MARKER: DD = SURVEY DISK
 JV6729_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6729_STAMPING: 127 COKESBURY 1989
 JV6729_MARK LOGO: MD-025
 JV6729_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6729_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6729+STABILITY: SURFACE MOTION
 JV6729_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6729+SATELLITE: SATELLITE OBSERVATIONS - June 18, 2009
 JV6729
 JV6729  HISTORY     - Date     Condition        Report By
 JV6729  HISTORY     - 1989     MONUMENTED       RDA
 JV6729  HISTORY     - 20090618 GOOD             NGS
 JV6729
 JV6729                          STATION DESCRIPTION
 JV6729
 JV6729'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6729'THE STATION IS LOCATED IN SOUTH CENTRAL HARFORD COUNTY, MARYLAND IN
 JV6729'THE VILLAGE OF ABINGDON.
 JV6729'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 24 AND
 JV6729'STATE HIGHWAY 7 PROCEED NORTHEAST ALONG HIGHWAY 7 1.66 MILES TO ITS
 JV6729'INTERSECTION WITH ABINGDON ROAD.  TURN RIGHT PROCEED SOUTH ALONG
 JV6729'ABINGDON ROAD 0.41 MILE TO COKESBURY MEMORIAL METHODIST CHURCH AND THE
 JV6729'STATION ON THE RIGHT.
 JV6729'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6729'ABOUT 1 INCH BELOW GROUND STAMPED 127 COKESBURY 1989.  THE STATION IS
 JV6729'38.9 FEET SOUTH OF THE CENTERLINE OF ABINGDON ROAD, 17.4 FEET
 JV6729'NORTHEAST OF THE NORTHWEST CORNER OF BRICK COKESBURY MEMORIAL
 JV6729'METHODIST CHURCH SIGN, AND 45.2 FEET NORTHWEST OF THE CENTERLINE OF
 JV6729'THE NORTHWEST LANE OF A CIRCULAR DRIVE OF A CEMETERY AND A BRICK
 JV6729'BUILDING ON THE CHURCH GROUNDS.
 JV6729
 JV6729                          STATION RECOVERY (2009)
 JV6729
 JV6729'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009
 JV6729'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1845 ***********************************************************************
 HU1845  DESIGNATION -  COLBOURNE
 HU1845  PID         -  HU1845
 HU1845  STATE/COUNTY-  MD/SOMERSET
 HU1845  COUNTRY     -  US
 HU1845  USGS QUAD   -  KINGSTON (2016)
 HU1845
 HU1845                         *CURRENT SURVEY CONTROL
 HU1845  ______________________________________________________________________
 HU1845* NAD 83(1993) POSITION- 38 01 26.58866(N) 075 44 37.75132(W)   ADJUSTED
 HU1845* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU1845  ______________________________________________________________________
 HU1845  GEOID HEIGHT    -        -36.146 (meters)                     GEOID18
 HU1845  LAPLACE CORR    -         -2.04  (seconds)                    DEFLEC18
 HU1845  HORZ ORDER      -  FIRST
 HU1845
 HU1845.The horizontal coordinates were established by classical geodetic methods
 HU1845.and adjusted by the National Geodetic Survey in November 1994.
 HU1845
 HU1845.The orthometric height was scaled from a topographic map.
 HU1845
 HU1845.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1845.GEOID18 height accuracy estimate available here.
 HU1845
 HU1845.Click photographs - Photos may exist for this station.
 HU1845
 HU1845.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1845
 HU1845. The following values were computed from the NAD 83(1993) position.
 HU1845
 HU1845;                    North         East     Units Scale Factor Converg.
 HU1845;SPC MD       -    40,430.855   510,300.428   MT  1.00005945   +0 47 18.3
 HU1845;SPC MD       -   132,646.90  1,674,210.65   sFT  1.00005945   +0 47 18.3
 HU1845;SPC VA S     - 1,191,167.771 3,741,971.278   MT  1.00001098   +1 40 22.1
 HU1845;SPC VA S     - 3,908,022.93 12,276,784.10   sFT  1.00001098   +1 40 22.1
 HU1845;UTM  18      - 4,208,744.734   434,715.496   MT  0.99965249   -0 27 29.5
 HU1845
 HU1845!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1845!SPC MD       -   1.00000540  x   1.00005945  =   1.00006485
 HU1845!SPC VA S     -   1.00000540  x   1.00001098  =   1.00001638
 HU1845!UTM  18      -   1.00000540  x   0.99965249  =   0.99965789
 HU1845
 HU1845:                Primary Azimuth Mark                     Grid Az
 HU1845:SPC MD       -  COLBOURNE AZ MK                          195 06 32.7
 HU1845:SPC VA S     -  COLBOURNE AZ MK                          194 13 28.9
 HU1845:UTM  18      -  COLBOURNE AZ MK                          196 21 20.5
 HU1845
 HU1845_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3471508744(NAD 83)
 HU1845
 HU1845|---------------------------------------------------------------------|
 HU1845| PID    Reference Object                     Distance      Geod. Az  |
 HU1845|                                                           dddmmss.s |
 HU1845| DC7937 COLBOURNE RM 1                       31.803 METERS 04733     |
 HU1845| DC7936 COLBOURNE AZ MK                                    1955351.0 |
 HU1845| DC7938 COLBOURNE RM 2                       18.489 METERS 33706     |
 HU1845|---------------------------------------------------------------------|
 HU1845
 HU1845                          SUPERSEDED SURVEY CONTROL
 HU1845
 HU1845  NAD 83(1991)-  38 01 26.58846(N)    075 44 37.75199(W) AD(       ) 1
 HU1845  NAD 83(1986)-  38 01 26.58868(N)    075 44 37.78069(W) AD(       ) 1
 HU1845  NAD 27      -  38 01 26.14300(N)    075 44 39.03100(W) AD(       ) 1
 HU1845
 HU1845.Superseded values are not recommended for survey control.
 HU1845
 HU1845.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1845.See file dsdata.pdf to determine how the superseded data were derived.
 HU1845
 HU1845_MARKER: DS = TRIANGULATION STATION DISK
 HU1845_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1845_STAMPING: COLBURNE 1942
 HU1845_MARK LOGO: CGS
 HU1845_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1845+STABILITY: SURFACE MOTION
 HU1845
 HU1845  HISTORY     - Date     Condition        Report By
 HU1845  HISTORY     - 1942     MONUMENTED       CGS
 HU1845  HISTORY     - 1963     GOOD             MDDT
 HU1845
 HU1845                          STATION DESCRIPTION
 HU1845
 HU1845'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU1845'STATION IS LOCATED ABOUT 3 MILES E OF MARION IN THE BARNYARD OF
 HU1845'A FARM OWNED BY DR. GEORGE C. COLBOURNE.  IT IS LOCATED 105 FEET
 HU1845'SE OF THE SE CORNER OF THE BARN, 60 FEET E OF THE S END OF THE
 HU1845'LONG LOW SHEDS TO THE S OF THE BARN, 25 FEET W OF A LILAC HEDGE
 HU1845'AND 3 FEET N OF A ROW OF PECAN TREES.  IT IS SET FLUSH WITH THE
 HU1845'GROUND AND IS STAMPED COLBOURNE 1942.
 HU1845'
 HU1845'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HU1845'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HU1845'
 HU1845'REFERENCE MARK NO.1 IS LOCATED AT THE SE CORNER OF THE BARN.  IT
 HU1845'PROJECTS ABOUT 2 INCHES AND IS STAMPED COLBOURNE NO.1 1942.
 HU1845'
 HU1845'REFERENCE MARK NO.2 IS LOCATED AT THE S END OF THE LONG LOW
 HU1845'BUILDINGS TO THE S OF THE BARN.  IT PROJECTS ABOUT 4 INCHES AND
 HU1845'IS STAMPED COLBOURNE NO.2 1942.
 HU1845'
 HU1845'THE AZIMUTH MARK IS LOCATED 0.3 MILE BY ROAD SE OF THE STATION,
 HU1845'ABOUT 100 YARDS S OF A CURVE TO THE RIGHT (S OF THE ROAD).  IT
 HU1845'IS IN FRONT OF AND ABOUT 150 FEET E OF A SHACK, 17 FEET W
 HU1845'OF THE CENTER OF THE MAIN ROAD AND IN THE SE CORNER OF A
 HU1845'CULTIVATED FIELD.  IT PROJECTS ABOUT 6 INCHES AND IS STAMPED
 HU1845'COLBOURNE 1942.  TO REACH THE AZIMUTH MARK FROM THE
 HU1845'STATION FOLLOW THE ROAD TOWARDS MARION FOR 0.3 MILE TO A POINT
 HU1845'ABOUT 100 YARDS PAST A CURVE TO THE RIGHT IN THE ROAD AND
 HU1845'THE AZIMUTH MARK ON THE RIGHT AS DESCRIBED.
 HU1845'
 HU1845'TO REACH THE STATION FROM THE SMALL TOWN OF MARION GO E ON
 HU1845'STATE HIGHWAY 357 FOR 2.05 MILES TO THE END OF THE PAVEMENT.  HERE
 HU1845'TAKE LEFT FORK AND GO 0.3 MILE TO A CHURCH.  TURN LEFT AND GO
 HU1845'0.65 MILE TO A FARMHOUSE ON THE LEFT AND THE STATION AS DESCRIBED.
 HU1845'
 HU1845'A 90-FOOT TOWER WILL SEE A 123-FOOT LIGHT AT NOBLE.
 HU1845'
 HU1845'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SMULLEN.
 HU1845'
 HU1845'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT BELL.
 HU1845
 HU1845                          STATION RECOVERY (1963)
 HU1845
 HU1845'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 HU1845'STATION, RM 1, RM 2, WERE RECOVERED IN GOOD CONDITION AS
 HU1845'DESCRIBED.  AZIMUTH MARK WAS NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3545 ***********************************************************************
 JU3545  DESIGNATION -  COLDWELL
 JU3545  PID         -  JU3545
 JU3545  STATE/COUNTY-  MD/KENT
 JU3545  COUNTRY     -  US
 JU3545  USGS QUAD   -  MILLINGTON (2016)
 JU3545
 JU3545                         *CURRENT SURVEY CONTROL
 JU3545  ______________________________________________________________________
 JU3545* NAD 83(1991) POSITION- 39 22 25.05662(N) 075 45 58.59237(W)   ADJUSTED
 JU3545* NAVD 88 ORTHO HEIGHT -    20.1   (meters)       66.    (feet) VERTCON3
 JU3545  ______________________________________________________________________
 JU3545  GEOID HEIGHT    -        -33.574 (meters)                     GEOID18
 JU3545  LAPLACE CORR    -         -1.11  (seconds)                    DEFLEC18
 JU3545  HORZ ORDER      -  SECOND
 JU3545
 JU3545.The horizontal coordinates were established by classical geodetic methods
 JU3545.and adjusted by the National Geodetic Survey in January 1992.
 JU3545
 JU3545.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3545.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3545
 JU3545.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3545.GEOID18 height accuracy estimate available here.
 JU3545
 JU3545.Click photographs - Photos may exist for this station.
 JU3545
 JU3545.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3545
 JU3545. The following values were computed from the NAD 83(1991) position.
 JU3545
 JU3545;                    North         East     Units Scale Factor Converg.
 JU3545;SPC MD       -   190,202.846   506,304.196   MT  0.99998753   +0 46 27.6
 JU3545;SPC MD       -   624,023.84  1,661,099.68   sFT  0.99998753   +0 46 27.6
 JU3545;UTM  18      - 4,358,519.687   433,996.838   MT  0.99965364   -0 29 10.0
 JU3545
 JU3545!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3545!SPC MD       -   1.00000212  x   0.99998753  =   0.99998965
 JU3545!UTM  18      -   1.00000212  x   0.99965364  =   0.99965576
 JU3545
 JU3545:                Primary Azimuth Mark                     Grid Az
 JU3545:SPC MD       -  BOUNDARY MON 66 DE MD=LAWRENCE           355 39 22.5
 JU3545:UTM  18      -  BOUNDARY MON 66 DE MD=LAWRENCE           356 55 00.1
 JU3545
 JU3545_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3399658519(NAD 83)
 JU3545
 JU3545|---------------------------------------------------------------------|
 JU3545| PID    Reference Object                     Distance      Geod. Az  |
 JU3545|                                                           dddmmss.s |
 JU3545| JU3546 BDY MON 63 RESET DEL MD              29.906 METERS 00005     |
 JU3545| CB1370 COLDWELL RM 1                        27.566 METERS 02203     |
 JU3545| CB1371 COLDWELL RM 2                        26.732 METERS 14924     |
 JU3545| JU4243 COLDWELL AZ MK                      270.968 METERS 17322     |
 JU3545| JU3547 HERRINGS AZIMUTH MARK               APPROX. 1.4 KM 1860456.2 |
 JU3545| JU3505 BOUNDARY MON 66 DE MD=LAWRENCE      APPROX. 4.9 KM 3562550.1 |
 JU3545| JU3530 BOUNDARY MONUMENT 63                 29.842 METERS 35645     |
 JU3545|---------------------------------------------------------------------|
 JU3545
 JU3545                          SUPERSEDED SURVEY CONTROL
 JU3545
 JU3545  NAD 83(1986)-  39 22 25.04873(N)    075 45 58.60107(W) AD(       ) 2
 JU3545  NAD 27      -  39 22 24.64430(N)    075 45 59.84020(W) AD(       ) 2
 JU3545  NGVD 29 (07/19/86)   20.3    (m)           67.     (f) VERT ANG       
 JU3545
 JU3545.Superseded values are not recommended for survey control.
 JU3545
 JU3545.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3545.See file dsdata.pdf to determine how the superseded data were derived.
 JU3545
 JU3545_MARKER: DS = TRIANGULATION STATION DISK
 JU3545_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3545_STAMPING: COLDWELL 1961
 JU3545_MARK LOGO: CGS
 JU3545_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU3545_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3545+STABILITY: SURFACE MOTION
 JU3545
 JU3545  HISTORY     - Date     Condition        Report By
 JU3545  HISTORY     - 1961     MONUMENTED       CGS
 JU3545  HISTORY     - 1975     SEE DESCRIPTION  NGS
 JU3545  HISTORY     - 1976     SEE DESCRIPTION  NGS
 JU3545  HISTORY     - 1987     GOOD             NGS
 JU3545  HISTORY     - 19960420 MARK NOT FOUND   USPSQD
 JU3545  HISTORY     - 20130404 MARK NOT FOUND   DELCOS
 JU3545
 JU3545                          STATION DESCRIPTION
 JU3545
 JU3545'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3545'THE STATION IS LOCATED IN THE EAST EDGE OF A CULTIVATED FIELD,
 JU3545'2.0 MILES EAST OF SASSAFRAS, 4.0 MILES WEST-SOUTHWEST OF TOWNSEND
 JU3545'AND ON PROPERTY OWNED BY MR. CHARLES RAUSCH.
 JU3545'
 JU3545'TO REACH THE STATION FROM THE POST OFFICE IN TOWNSEND, GO WEST
 JU3545'ON THE MAIN MACADAM ROAD FOR 4.75 MILES TO A CROSSROAD, TURN
 JU3545'RIGHT AND GO ABOUT 150 FEET TO A Y-FORK, KEEP THE RIGHT FORK ON
 JU3545'THE MACADAM ROAD FOR 0.3 MILE TO THE AZIMUTH MARK ON THE RIGHT,
 JU3545'CONTINUE NORTH ON THE MACADAM ROAD FOR 0.15 MILE TO THE STATION
 JU3545'ON THE LEFT.
 JU3545'
 JU3545'THE STATION MARK IS A STANDARD DISK STAMPED COLDWELL 1961, SET
 JU3545'IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 JU3545'GROUND SURFACE.  IT IS 25.0 FEET WEST OF THE APPROXIMATE CENTER
 JU3545'OF THE MACADAM ROAD, 42.6 FEET WEST OF A TWIN TRUNK OAK TREE,
 JU3545'35.5 FEET NORTH OF A STANDARD METAL WITNESS POST AND MARKER AND
 JU3545'40.4 FEET NORTH OF A NORTHEAST FENCE CORNER.
 JU3545'
 JU3545'REFERENCE MARK 1 IS A STANDARD DISK STAMPED COLDWELL NO 1 1961,
 JU3545'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH
 JU3545'THE GROUND SURFACE.  IT IS 15.0 FEET EAST OF THE APPROXIMATE CENTER
 JU3545'OF THE MACADAM ROAD, 80.0 FEET NORTH OF THE TWIN TRUNK OAK TREE,
 JU3545'124.0 FEET NORTH-NORTHEAST OF THE WITNESS POST AND 125.0 FEET
 JU3545'NORTH OF THE NORTHEAST CORNER OF THE FENCE.
 JU3545'
 JU3545'REFERENCE MARK 2 IS A STANDARD DISK STAMPED COLDWELL NO 2 1961,
 JU3545'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH
 JU3545'THE GROUND SURFACE.  IT IS 14.0 FEET EAST OF THE APPROXIMATE
 JU3545'CENTER OF THE MACADAM ROAD, 50.8 FEET SOUTHEAST OF THE NORTHEAST
 JU3545'FENCE CORNER, 51.0 FEET SOUTHEAST OF THE WITNESS POST AND 78.0
 JU3545'FEET SOUTH OF THE TWIN TRUNK OAK TREE.
 JU3545'
 JU3545'BOUNDARY MONUMENT NO. 63 IS A 11 X 11 INCH LIMESTONE MONUMENT
 JU3545'WITH THE LETTER P ON THE EAST SIDE AND A M ON THE WEST SIDE AND
 JU3545'PROJECTS ABOUT 24 INCHES ABOVE THE GROUND SURFACE.  THE MONUMENT
 JU3545'WAS RECOVERED IN GOOD CONDITION.  IT IS 17.6 FEET WEST OF THE
 JU3545'APPROXIMATE CENTER OF THE MACADAM ROAD, 102.6 FEET
 JU3545'NORTH-NORTHWEST OF THE TWIN TRUNK OAK TREE, 136.6 FEET NORTH OF
 JU3545'THE WITNESS POST AND 137.0 FEET NORTH OF THE NORTHEAST
 JU3545'FENCE CORNER.
 JU3545'
 JU3545'AZIMUTH MARK IS A STANDARD DISK STAMPED COLDWELL 1961, SET IN
 JU3545'TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 3 INCHES ABOVE
 JU3545'THE GROUND SURFACE.  IT IS 6.0 INCHES WEST OF A NORTH AND SOUTH
 JU3545'FENCE LINE, 2.6 FEET NORTH OF A STANDARD METAL WITNESS POST AND
 JU3545'16.0 FEET EAST OF THE APPROXIMATE CENTER OF THE MACADAM ROAD.
 JU3545'
 JU3545'HEIGHT OF LIGHT ABOVE STATION MARK 29.60 METERS.
 JU3545
 JU3545                          STATION RECOVERY (1975)
 JU3545
 JU3545'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JU3545'THE STATION SURFACE DISK WAS FOUND REMOVED FROM THE CONCRETE
 JU3545'POST.  THE SURFACE MONUMENT WAS REMOVED FROM THE GROUND AND THE
 JU3545'SUB-SURFACE DISK FOUND IN GOOD CONDITION ABOUT 4 FEET BELOW THE
 JU3545'SURFACE OF THE FIELD.  DUE TO THE VERY WET CONDITIONS, IT WAS
 JU3545'IMPOSSIBLE TO SET A NEW SURFACE MONUMENT AT THIS DATE.  BY THE
 JU3545'TIME THE SURFACE OF THE GROUND WAS REMOVED TO SEE THE
 JU3545'SUB-SURFACE DISK, THERE WAS A HOLE 6 FEET ACROSS AND FILLED WITH
 JU3545'WATER WITHIN 18 INCHES OF THE SURFACE.  A IRON PIPE WAS USED TO
 JU3545'HOLD THE WATER FROM THE DISK WHILE OBSERVATIONS WERE TAKEN
 JU3545'FROM BOUNDARY MONUMENT NUMBER 63.
 JU3545'
 JU3545'BOTH REFERENCE MARKS AND THE AZIMUTH MARK WERE RECOVERED AND
 JU3545'FOUND IN GOOD CONDITION.  THE DISTANCE TO REFERENCE MARK 2
 JU3545'AGREED WITH THE 1961 MEASUREMENT, HOWEVER THE DISTANCE TO
 JU3545'REFERENCE MARK 1 WAS FOUND TO BE SLIGHTLY LONGER.
 JU3545'
 JU3545'THERE WERE NO OBSERVATIONS TAKEN FROM THIS STATION AT THIS
 JU3545'DATE DUE TO THE VERY WET CONDITIONS.
 JU3545'
 JU3545'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3545'2 MILES EAST OF SASSAFRAS.
 JU3545
 JU3545                          STATION RECOVERY (1976)
 JU3545
 JU3545'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3545'THE STATION SURFACE MARK WAS FOUND DESTROYED.  THE SUB-SURFACE
 JU3545'MARK WAS FOUND IN GOOD CONDITION.  A NEW SURFACE MARK WAS SET
 JU3545'AT THIS DATE.  REFERENCE MARKS ONE AND TWO WERE FOUND IN GOOD
 JU3545'CONDITION.  HOWEVER, REFERENCE MARK ONE APPEARED TO HAVE BEEN HIT
 JU3545'AT ONE TIME.  IT IS NOW SOLID AND IN GOOD CONDITION.  A LONGER
 JU3545'DISTANCE OF 0.16 FOOT OR 0.048 METER WAS NOTED TO REFERENCE MARK
 JU3545'ONE.  A SHORTER DISTANCE OF 0.02 FOOT OR 0.004 METER WAS NOTED
 JU3545'TO REFERENCE MARK TWO.  THE ANGLE BETWEEN THE AZIMUTH MARK AND
 JU3545'REFERENCE MARK ONE WAS FOUND TO BE 4 MINUTES AND 11 SECONDS
 JU3545'LARGER THAN THE 1961 ANGLE.  ALL OTHER DISTANCES AND DIRECTIONS
 JU3545'WERE WITHIN CLOSE AGREEMENT WITH THE 1961 OBSERVATIONS.
 JU3545'
 JU3545'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JU3545'
 JU3545'THE STATION IS LOCATED ABOUT 2 AIRLINE MILES EAST OF SASSAFRAS,
 JU3545'4 MILES WEST-SOUTHWEST OF TOWSON, AND ON PROPERTY OWNED BY MR. BARRI
 JU3545'BUTLON, RT. 2, TOWSON, DELAWARE.
 JU3545'
 JU3545'TO REACH FROM THE MAIN CROSSROADS IN SASSAFRAS, GO EAST ON COLDWELL
 JU3545'ROAD FOR 2.2 MILES TO A SIDE ROAD LEFT ABOUT 50 FEET BEFORE
 JU3545'REACHING A CROSSROADS.  TURN LEFT AND GO NORTH ON STATE LINE
 JU3545'ROAD FOR 0.3 MILE TO THE AZIMUTH MARK ON THE RIGHT.  CONTINUE
 JU3545'NORTH ON STATE LINE ROAD FOR 0.15 MILE TO THE STATION ON THE
 JU3545'LEFT.
 JU3545'
 JU3545'THE STATION SURFACE MARK IS A STANDARD DISK STAMPED COLDWELL
 JU3545'1961 1976, SET IN A 14-INCH ROUND CONCRETE MONUMENT WHICH IS
 JU3545'14-INCHES BELOW THE SURFACE.  THE SUB-SURFACE DISK IS STAMPED
 JU3545'COLDWELL 1961 AND SET IN AN 8-INCH MASS OF CONCRETE WHICH IS
 JU3545'42-INCHES BELOW THE SURFACE.  THEY ARE 91 FEET SOUTHWEST OF A
 JU3545'WITNESS POST, 88 FEET NORTHWEST OF A WITNESS POST, 40.5 FEET
 JU3545'WEST-NORTHWEST OF A POWERLINE POLE NUMBERED J89112, AND 27 FEET
 JU3545'WEST OF THE CENTER OF STATE LINE ROAD.
 JU3545'
 JU3545'REFERENCE MARK ONE IS A STANDARD DISK STAMPED COLDWELL NO. 2 1961,
 JU3545'SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS
 JU3545'FLUSH WITH THE SURFACE.  IT IS 91 FEET NORTH OF POWERLINE POLE
 JU3545'NUMBERED J89112, 14 FEET EAST OF THE CENTER OF STATE LINE ROAD,
 JU3545'AND 2 FEET NORTH OF A WITNESS POST.
 JU3545'
 JU3545'REFERENCE MARK TWO IS A STANDARD DISK STAMPED COLDWELL NO. 2 1961,
 JU3545'SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS
 JU3545'FLUSH WITH THE SURFACE.  IT IS 69 FEET SOUTH OF POWERLINE POLE
 JU3545'NUMBERED J89112, 14 FEET EAST OF THE CENTER OF STATE LINE ROAD,
 JU3545'AND 1 FOOT SOUTH OF A WITNESS POST.
 JU3545'
 JU3545'THE AZIMUTH MARK IS A STANDARD DISK STAMPED COLDWELL 1961, SET IN
 JU3545'THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH
 JU3545'THE SURFACE.  IT IS 109 FEET SOUTH OF A POWERLINE POLE NUMBERED
 JU3545'J89108, 50 FEET NORTH OF A PRIVATE DRIVE, 46 FEET SOUTH OF A
 JU3545'TELEPHONE CABLE MARKER NUMBERED MB 203A, AND 15 FEET EAST OF THE
 JU3545'CENTER OF STATE LINE ROAD.
 JU3545'
 JU3545'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBERED 63 WAS RESET
 JU3545'AT THIS DATE, SEE DESCRIPTION THEREOF.
 JU3545'
 JU3545'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3545'2 MILES EAST OF SASSAFRAS.
 JU3545
 JU3545                          STATION RECOVERY (1987)
 JU3545
 JU3545'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 JU3545'THE DESIGNATED MARK WAS RECOVERED AS PREVIOUSLY DESCRIBED.
 JU3545'THE STATION MARK, REFERENCE MARK TWO AND THE AZIMUTH MARK WERE
 JU3545'RECOVERED AND FOUND IN GOOD CONDITION AS DESCRIBED IN THE MOST
 JU3545'RECENT INFORMATION AVAILABLE. REFERENCE MARK ONE WAS RECOVERED BUT
 JU3545'FOUND TILTED TO THE NORTH AS PREVIOUSLY STATED, IT COULD NOT BE
 JU3545'INTERSECTED AT THIS DATE. THE BOUNDARY MONUMENT NUMBER 63 HAD BEEN
 JU3545'BROKEN OFF AGAIN AND HAS ALSO BEEN RESET AGAIN BY THE MARYLAND
 JU3545'DELAWARE BOUNDARY COMMISSIONS. IT WAS TRAVERSED TO AT THIS DATE
 JU3545'AND FOUND TO BE POSITIONED VERY CLOSE TO ITS MOST RECENT PUBLISHED
 JU3545'DATA.  NO NEW DESCRIPTION OF THIS STATION IS REQUIRED.
 JU3545
 JU3545                          STATION RECOVERY (1996)
 JU3545
 JU3545'RECOVERY NOTE BY US POWER SQUADRON 1996
 JU3545'MARK NOT FOUND.
 JU3545
 JU3545                          STATION RECOVERY (2013)
 JU3545
 JU3545'RECOVERY NOTE BY DELAWARE COASTAL PROGRAM 2013
 JU3545'NOW LOCATED IN A CULTIVATED FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4727 ***********************************************************************
 AB4727  DESIGNATION -  COLE
 AB4727  PID         -  AB4727
 AB4727  STATE/COUNTY-  MD/CARROLL
 AB4727  COUNTRY     -  US
 AB4727  USGS QUAD   -  MANCHESTER (2016)
 AB4727
 AB4727                         *CURRENT SURVEY CONTROL
 AB4727  ______________________________________________________________________
 AB4727* NAD 83(2011) POSITION- 39 43 13.25115(N) 076 54 56.28603(W)   ADJUSTED
 AB4727* NAD 83(2011) ELLIP HT-   268.806 (meters)        (06/27/12)   ADJUSTED
 AB4727* NAD 83(2011) EPOCH   -  2010.00
 AB4727* NAVD 88 ORTHO HEIGHT -   301.4   (meters)      989.    (feet) GPS OBS
 AB4727  ______________________________________________________________________
 AB4727  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4727  GEOID HEIGHT    -        -32.583 (meters)                     GEOID99
 AB4727  GEOID HEIGHT    -        -32.582 (meters)                     GEOID18
 AB4727  NAD 83(2011) X  -  1,112,190.173 (meters)                     COMP
 AB4727  NAD 83(2011) Y  - -4,785,267.433 (meters)                     COMP
 AB4727  NAD 83(2011) Z  -  4,054,322.784 (meters)                     COMP
 AB4727  LAPLACE CORR    -          4.11  (seconds)                    DEFLEC18
 AB4727
 AB4727  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4727  Standards:
 AB4727         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4727            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4727  -------------------------------------------------------------------
 AB4727  NETWORK    1.52   5.15           0.67   0.56   2.63      0.04925312
 AB4727  -------------------------------------------------------------------
 AB4727  Click here for local accuracies and other accuracy information.
 AB4727
 AB4727.The horizontal coordinates were established by GPS observations
 AB4727.and adjusted by the National Geodetic Survey in June 2012.
 AB4727
 AB4727.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4727.been affixed to the stable North American tectonic plate. See 
 AB4727.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4727
 AB4727.The horizontal coordinates are valid at the epoch date displayed above
 AB4727.which is a decimal equivalence of Year/Month/Day.
 AB4727
 AB4727.The orthometric height was determined by GPS observations and a
 AB4727.high-resolution geoid model.
 AB4727
 AB4727.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4727.GEOID18 height accuracy estimate available here.
 AB4727
 AB4727.Click photographs - Photos may exist for this station.
 AB4727
 AB4727.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4727
 AB4727.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4727
 AB4727.The ellipsoidal height was determined by GPS observations
 AB4727.and is referenced to NAD 83.
 AB4727
 AB4727. The following values were computed from the NAD 83(2011) position.
 AB4727
 AB4727;                    North         East     Units Scale Factor Converg.
 AB4727;SPC MD       -   227,983.610   407,233.977   MT  1.00005849   +0 03 10.6
 AB4727;SPC MD       -   747,976.23  1,336,066.81   sFT  1.00005849   +0 03 10.6
 AB4727;UTM  18      - 4,398,473.653   335,811.203   MT  0.99993190   -1 13 28.0
 AB4727
 AB4727!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4727!SPC MD       -   0.99995783  x   1.00005849  =   1.00001632
 AB4727!UTM  18      -   0.99995783  x   0.99993190  =   0.99988973
 AB4727
 AB4727:                Primary Azimuth Mark                     Grid Az
 AB4727:SPC MD       -  COLE AZ MK                               181 29 13.1
 AB4727:UTM  18      -  COLE AZ MK                               182 45 51.7
 AB4727
 AB4727_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3581198473(NAD 83)
 AB4727
 AB4727|---------------------------------------------------------------------|
 AB4727| PID    Reference Object                     Distance      Geod. Az  |
 AB4727|                                                           dddmmss.s |
 AB4727| AB4702 COLE AZ MK                          APPROX. 0.6 KM 1813223.7 |
 AB4727|---------------------------------------------------------------------|
 AB4727
 AB4727                          SUPERSEDED SURVEY CONTROL
 AB4727
 AB4727  NAD 83(2007)-  39 43 13.25138(N)    076 54 56.28676(W) AD(2002.00) 0
 AB4727  ELLIP H (02/10/07)  268.825  (m)                       GP(2002.00)    
 AB4727  ELLIP H (08/30/02)  268.820  (m)                       GP(       ) 4 2
 AB4727  NAD 83(1991)-  39 43 13.25108(N)    076 54 56.28699(W) AD(       ) 1
 AB4727  ELLIP H (07/03/96)  268.738  (m)                       GP(       ) 1 1
 AB4727  NAVD 88 (07/03/96)  301.4    (m)  GEOID93  model used  GPS OBS        
 AB4727
 AB4727.Superseded values are not recommended for survey control.
 AB4727
 AB4727.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4727.See file dsdata.pdf to determine how the superseded data were derived.
 AB4727
 AB4727_MARKER: DD = SURVEY DISK
 AB4727_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4727_STAMPING: COLE 1995
 AB4727_MARK LOGO: MD-013
 AB4727_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4727_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4727+STABILITY: SURFACE MOTION
 AB4727_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4727+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4727
 AB4727  HISTORY     - Date     Condition        Report By
 AB4727  HISTORY     - 1995     MONUMENTED       MD-013
 AB4727
 AB4727                          STATION DESCRIPTION
 AB4727
 AB4727'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4727'STATION IS LOCATED ABOUT 11.0 MI (17.7 KM) NORTHEAST OF THE CENTER OF
 AB4727'WESTMINSTER AND ABOUT 4.5 MI (7.2 KM) NORTHWEST OF MANCHESTER AT THE
 AB4727'MARYLAND/PENNSYVANIA STATE LINE. STATION IS LOCATED ON THE EAST SIDE
 AB4727'OF MD ROUTE 30 (HANOVER PIKE) AT ITS INTERSECTION WITH THE
 AB4727'MARYLAND/PENNSYLVANIA STATE LINE. STATION MARK IS SET IN THE TOP OF 10
 AB4727'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 55.5 FT
 AB4727'(16.9 M) EAST OF THE CENTERLINE OF THE ROAD, 115.0 FT (35.1 M) NORTH
 AB4727'OF THE THE CENTERLINE OF THE INTERSECTION OF THE ROAD WITH A DIRT
 AB4727'DRIVEWAY LEADING TO HOUSE NO.3820, 46.6 FT (14.2 M) SOUTHWEST OF A
 AB4727'MASON-DIXON LINE MARKER AND 42.0 FT (12.8 M) SOUTHEAST OF A
 AB4727'MASON-DIXON LINE SIGN ALONG THE EAST SIDE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6780 ***********************************************************************
 HV6780  DESIGNATION -  COLE 2
 HV6780  PID         -  HV6780
 HV6780  STATE/COUNTY-  MD/ST MARYS
 HV6780  COUNTRY     -  US
 HV6780  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6780
 HV6780                         *CURRENT SURVEY CONTROL
 HV6780  ______________________________________________________________________
 HV6780* NAD 83(1993) POSITION- 38 24 00.11273(N) 076 35 14.87769(W)   ADJUSTED
 HV6780* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6780  ______________________________________________________________________
 HV6780  GEOID HEIGHT    -        -33.977 (meters)                     GEOID18
 HV6780  LAPLACE CORR    -         -6.07  (seconds)                    DEFLEC18
 HV6780  HORZ ORDER      -  SECOND
 HV6780
 HV6780.The horizontal coordinates were established by classical geodetic methods
 HV6780.and adjusted by the National Geodetic Survey in November 1994.
 HV6780
 HV6780.The orthometric height was scaled from a topographic map.
 HV6780
 HV6780.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6780.GEOID18 height accuracy estimate available here.
 HV6780
 HV6780.Click photographs - Photos may exist for this station.
 HV6780
 HV6780.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6780
 HV6780. The following values were computed from the NAD 83(1993) position.
 HV6780
 HV6780;                    North         East     Units Scale Factor Converg.
 HV6780;SPC MD       -    81,487.973   436,035.468   MT  0.99998410   +0 15 32.1
 HV6780;SPC MD       -   267,348.46  1,430,559.70   sFT  0.99998410   +0 15 32.1
 HV6780;UTM  18      - 4,251,393.817   361,381.134   MT  0.99983664   -0 59 10.4
 HV6780
 HV6780!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6780!SPC MD       -   1.00000490  x   0.99998410  =   0.99998900
 HV6780!UTM  18      -   1.00000490  x   0.99983664  =   0.99984154
 HV6780
 HV6780:                Primary Azimuth Mark                     Grid Az
 HV6780:SPC MD       -  BRISCOE                                  028 37 06.5
 HV6780:UTM  18      -  BRISCOE                                  029 51 49.0
 HV6780
 HV6780_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6138151393(NAD 83)
 HV6780
 HV6780|---------------------------------------------------------------------|
 HV6780| PID    Reference Object                     Distance      Geod. Az  |
 HV6780|                                                           dddmmss.s |
 HV6780| HV6785 BRISCOE                             APPROX. 4.0 KM 0285238.6 |
 HV6780| CX2626 COLE 2 AZ MK                                       1252608.6 |
 HV6780| HV6781 COLE MSFC 1908 RM                     4.988 METERS 12736     |
 HV6780| CX2627 COLE 2 RM 1                           2.164 METERS 21335     |
 HV6780|---------------------------------------------------------------------|
 HV6780
 HV6780                          SUPERSEDED SURVEY CONTROL
 HV6780
 HV6780  NAD 83(1991)-  38 24 00.11276(N)    076 35 14.87862(W) AD(       ) 2
 HV6780  NAD 83(1986)-  38 24 00.11236(N)    076 35 14.89245(W) AD(       ) 2
 HV6780  NAD 27      -  38 23 59.66000(N)    076 35 16.04800(W) AD(       ) 2
 HV6780
 HV6780.Superseded values are not recommended for survey control.
 HV6780
 HV6780.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6780.See file dsdata.pdf to determine how the superseded data were derived.
 HV6780
 HV6780_MARKER: DS = TRIANGULATION STATION DISK
 HV6780_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6780_STAMPING: COLE 2 1942
 HV6780_MARK LOGO: CGS
 HV6780_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6780+STABILITY: SURFACE MOTION
 HV6780
 HV6780  HISTORY     - Date     Condition        Report By
 HV6780  HISTORY     - 1942     MONUMENTED       CGS
 HV6780  HISTORY     - 1943     GOOD             CGS
 HV6780  HISTORY     - 1960     SEE DESCRIPTION  CGS
 HV6780  HISTORY     - 1971     SEE DESCRIPTION  NGS
 HV6780
 HV6780                          STATION DESCRIPTION
 HV6780
 HV6780'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6780'STATION IS ON THE SW SHORE OF THE PATUXENT RIVER, ABOUT 1/4 MILE
 HV6780'NW OF COLE CREEK, ON A GRASS PENINSULA ABOUT 35 FEET ABOVE
 HV6780'HIGH-WATER MARK.  IT IS 5 FEET SW OF EDGE OF BANK, 3 FEET NE OF
 HV6780'WIRE FENCE, STAMPED COLE 2 1942, AND PROJECTS ABOUT 2 INCHES.
 HV6780'
 HV6780'SURFACE, UNDERGROUND, REFERENCE MARK 1, AND AZIMUTH MARK ARE
 HV6780'BRONZE DISKS SET IN CONCRETE.
 HV6780'
 HV6780'REFERENCE MARK 1 IS SW OF THE STATION AND 4 FEET SW OF A WIRE
 HV6780'FENCE.  IT IS STAMPED COLE 2 NO 1 1942 AND PROJECTS ABOUT 3 INCHES.
 HV6780'
 HV6780'REFERENCE MARK 2 IS E OF THE STATION.  IT IS MARKED BY A HOLE IN
 HV6780'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6780'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH THE TOP
 HV6780'PROJECTING 3 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6780'COUNTERSUNK IN THE TOP OF POST.
 HV6780'
 HV6780'AZIMUTH MARK IS E OF THE STATION, ON PROPERTY OWNED BY ALDEN
 HV6780'BROOKS, AND OCCUPIED BY PAUL GUY, TENANT.  IT IS 15 FEET NE OF AN
 HV6780'18-INCH APPLE TREE, 14 FEET SSW OF EDGE OF BANK, AND 13 FEET NW OF
 HV6780'THE NW CORNER OF BARN.  IT IS STAMPED COLE 2 1942 AND PROJECTS
 HV6780'ABOUT 4 INCHES.  TO REACH THE AZIMUTH MARK FROM THE CROSSROADS IN
 HV6780'HOLLYWOOD, GO N ON MACADAM ROAD FOR 1.9 MILES TO DIRT ROAD RIGHT.
 HV6780'TURN RIGHT AND FOLLOW MAIN-TRAVELED DIRT ROAD FOR 2.25 MILES TO
 HV6780'TWO LARGE BARNS ON RIGHT AND ROAD RIGHT. TURN RIGHT BETWEEN BARNS
 HV6780'AND FOLLOW FARM ROAD FOR 0.25 MILE TO BARN ON LEFT AND MARK.
 HV6780'
 HV6780'TO REACH THE STATION FROM HOLLYWOOD, GO N ON MACADAM ROAD FOR 3.2
 HV6780'MILES TO GRAVEL ROAD RIGHT, TURN RIGHT AND GO 0.6 MILE TO FORKS,
 HV6780'BEAR RIGHT AND GO 1.0 MILE TO FORKS, BEAR LEFT AND GO 0.55 MILE TO
 HV6780'SAMSONS FARMS.  HERE TURN RIGHT THROUGH GATE AND BEAR LEFT TO
 HV6780'EDGE OF BLUFF, THEN TURN RIGHT AND FOLLOW BLUFF FOR ABOUT 0.3
 HV6780'MILE TO END OF TRUCK TRAVEL.  LEAVE TRUCK AND PROCEED ON FOOT
 HV6780'ABOUT 300 FEET TO THE STATION.
 HV6780'
 HV6780'A 4-FOOT STAND WILL SEE A 113-FOOT LIGHT AT BRISCOE 1934.
 HV6780'
 HV6780'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT ISLAND.
 HV6780'
 HV6780'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT HUTCHINS.
 HV6780'
 HV6780'HEIGHT OF LIGHT ABOVE STATION MARK 3 METERS.
 HV6780
 HV6780                          STATION RECOVERY (1943)
 HV6780
 HV6780'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6780'STATION AND REFERENCE MARKS RECOVERED AND FOUND IN GOOD CONDITION.
 HV6780'DISTANCES TO THE REFERENCE MARKS WERE REMEASURED AND FOUND TO BE
 HV6780'CORRECT.  THE ORIGINAL DESCRIPTION IS ADEQUATE AND CORRECT.
 HV6780
 HV6780                          STATION RECOVERY (1960)
 HV6780
 HV6780'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6780'STATION DESTROYED.  STATION WAS FOUND OVER TURNED AT THE FOOT OF
 HV6780'BLUFF.  REFERENCE MARK NO. 1 WAS RECOVERED IN GOOD CONDITION.  IT
 HV6780'IS NOW 2 FT. SW OF THE EDGE OF BLUFF.  REFERENCE MARK NO.2 WAS NOT
 HV6780'FOUND AND IS BELIEVED TO HAVE BEEN DESTROYED BY EROSION.
 HV6780'
 HV6780'THE AZIMUTH MARK WAS NOT RECOVERED AFTER A THOROUGH SEARCH.  THE
 HV6780'BARN HAS BEEN RAZED AND THE AREA GRADED.  IT HAS PROBABLY BEEN
 HV6780'DESTROYED.
 HV6780
 HV6780                          STATION RECOVERY (1971)
 HV6780
 HV6780'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 HV6780'STATION HAS BEEN DESTROYED BY EROSION.  THE CONCRETE MONUMENTS
 HV6780'WERE FOUND LAYING DOWN AT EDGE OF RIVER, WITH THE DISKS REMOVED.
 HV6780'
 HV6780'THE SMALL BLUFF HAS BEEN WORN AWAY UNTIL ONLY THE STEEP BACK SLOPE
 HV6780'REMAINS.
 HV6780'
 HV6780'THE AZIMUTH MARK WAS NOT FOUND AND IS BELIEVED TO ALSO BE LOST
 HV6780'DUE TO EROSION.
 HV6780'
 HV6780'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 2-1/2 MILES NNE
 HV6780'OF HOLLYWOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4702 ***********************************************************************
 AB4702  DESIGNATION -  COLE AZ MK
 AB4702  PID         -  AB4702
 AB4702  STATE/COUNTY-  MD/CARROLL
 AB4702  COUNTRY     -  US
 AB4702  USGS QUAD   -  MANCHESTER (2016)
 AB4702
 AB4702                         *CURRENT SURVEY CONTROL
 AB4702  ______________________________________________________________________
 AB4702* NAD 83(2011) POSITION- 39 42 53.30431(N) 076 54 56.98036(W)   ADJUSTED
 AB4702* NAD 83(2011) ELLIP HT-   275.759 (meters)        (06/27/12)   ADJUSTED
 AB4702* NAD 83(2011) EPOCH   -  2010.00
 AB4702* NAVD 88 ORTHO HEIGHT -   308.3   (meters)     1011.    (feet) GPS OBS
 AB4702  ______________________________________________________________________
 AB4702  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4702  GEOID HEIGHT    -        -32.560 (meters)                     GEOID99
 AB4702  GEOID HEIGHT    -        -32.557 (meters)                     GEOID18
 AB4702  NAD 83(2011) X  -  1,112,264.272 (meters)                     COMP
 AB4702  NAD 83(2011) Y  - -4,785,659.305 (meters)                     COMP
 AB4702  NAD 83(2011) Z  -  4,053,854.001 (meters)                     COMP
 AB4702  LAPLACE CORR    -          3.92  (seconds)                    DEFLEC18
 AB4702
 AB4702  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4702  Standards:
 AB4702         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4702            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4702  -------------------------------------------------------------------
 AB4702  NETWORK    1.41   4.70           0.61   0.54   2.40      0.01873167
 AB4702  -------------------------------------------------------------------
 AB4702  Click here for local accuracies and other accuracy information.
 AB4702
 AB4702.The horizontal coordinates were established by GPS observations
 AB4702.and adjusted by the National Geodetic Survey in June 2012.
 AB4702
 AB4702.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4702.been affixed to the stable North American tectonic plate. See 
 AB4702.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4702
 AB4702.The horizontal coordinates are valid at the epoch date displayed above
 AB4702.which is a decimal equivalence of Year/Month/Day.
 AB4702
 AB4702.The orthometric height was determined by GPS observations and a
 AB4702.high-resolution geoid model.
 AB4702
 AB4702.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4702.GEOID18 height accuracy estimate available here.
 AB4702
 AB4702.Click photographs - Photos may exist for this station.
 AB4702
 AB4702.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4702
 AB4702.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4702
 AB4702.The ellipsoidal height was determined by GPS observations
 AB4702.and is referenced to NAD 83.
 AB4702
 AB4702. The following values were computed from the NAD 83(2011) position.
 AB4702
 AB4702;                    North         East     Units Scale Factor Converg.
 AB4702;SPC MD       -   227,368.370   407,218.006   MT  1.00005706   +0 03 10.2
 AB4702;SPC MD       -   745,957.73  1,336,014.41   sFT  1.00005706   +0 03 10.2
 AB4702;UTM  18      - 4,397,858.999   335,781.525   MT  0.99993202   -1 13 27.9
 AB4702
 AB4702!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4702!SPC MD       -   0.99995674  x   1.00005706  =   1.00001380
 AB4702!UTM  18      -   0.99995674  x   0.99993202  =   0.99988876
 AB4702
 AB4702:                Primary Azimuth Mark                     Grid Az
 AB4702:SPC MD       -  COLE                                     001 29 13.0
 AB4702:UTM  18      -  COLE                                     002 45 51.1
 AB4702
 AB4702_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3578197858(NAD 83)
 AB4702
 AB4702|---------------------------------------------------------------------|
 AB4702| PID    Reference Object                     Distance      Geod. Az  |
 AB4702|                                                           dddmmss.s |
 AB4702| AB4727 COLE                                APPROX. 0.6 KM 0013223.2 |
 AB4702|---------------------------------------------------------------------|
 AB4702
 AB4702                          SUPERSEDED SURVEY CONTROL
 AB4702
 AB4702  NAD 83(2007)-  39 42 53.30454(N)    076 54 56.98109(W) AD(2002.00) 0
 AB4702  ELLIP H (02/10/07)  275.777  (m)                       GP(2002.00)    
 AB4702  ELLIP H (08/30/02)  275.767  (m)                       GP(       ) 4 2
 AB4702  NAD 83(1991)-  39 42 53.30412(N)    076 54 56.98137(W) AD(       ) 1
 AB4702  ELLIP H (07/03/96)  275.687  (m)                       GP(       ) 1 1
 AB4702  NAVD 88 (07/03/96)  308.3    (m)  GEOID93  model used  GPS OBS        
 AB4702
 AB4702.Superseded values are not recommended for survey control.
 AB4702
 AB4702.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4702.See file dsdata.pdf to determine how the superseded data were derived.
 AB4702
 AB4702_MARKER: DD = SURVEY DISK
 AB4702_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4702_STAMPING: COLE AZI 1995
 AB4702_MARK LOGO: MD-013
 AB4702_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4702_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4702+STABILITY: SURFACE MOTION
 AB4702_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4702+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4702
 AB4702  HISTORY     - Date     Condition        Report By
 AB4702  HISTORY     - 1995     MONUMENTED       MD-013
 AB4702
 AB4702                          STATION DESCRIPTION
 AB4702
 AB4702'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4702'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) NORTHWEST OF MANCHESTER,
 AB4702'ABOUT 11 MI (17.7 KM) NORTHEAST OF WESTMINSTER AND ABOUT 0.3 MI (0.5
 AB4702'KM) SOUTH OF THE MARYLAND/ PENNSYLVANIA STATE LINE. TO REACH STATION
 AB4702'FROM THE INTERSECTION OF MD ROUTE 30 (HANOVER PIKE) AND MD ROUTE 496
 AB4702'(BACHMAN VALLEY ROAD) GO NORTH ON MD ROUTE 30 FOR 1.45 MI (2.33 KM) TO
 AB4702'THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4702'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 54.5 FT
 AB4702'(16.6 M) EAST OF THE CENTERLINE OF THE ROAD, 46.5 FT (14.2 M) SOUTH OF
 AB4702'POWER POLE NO. 134498 AND 55.0 FT (16.8 M) SOUTHWEST OF A 30 IN OAK
 AB4702'TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6766 ***********************************************************************
 HV6766  DESIGNATION -  COLE MSFC 1908
 HV6766  PID         -  HV6766
 HV6766  STATE/COUNTY-  MD/ST MARYS
 HV6766  COUNTRY     -  US
 HV6766  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6766
 HV6766                         *CURRENT SURVEY CONTROL
 HV6766  ______________________________________________________________________
 HV6766* NAD 83(1993) POSITION- 38 24 00.06632(N) 076 35 14.16092(W)   ADJUSTED
 HV6766* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6766  ______________________________________________________________________
 HV6766  GEOID HEIGHT    -        -33.977 (meters)                     GEOID18
 HV6766  LAPLACE CORR    -         -6.08  (seconds)                    DEFLEC18
 HV6766  HORZ ORDER      -  SECOND
 HV6766
 HV6766.The horizontal coordinates were established by classical geodetic methods
 HV6766.and adjusted by the National Geodetic Survey in November 1994.
 HV6766
 HV6766.The orthometric height was scaled from a topographic map.
 HV6766
 HV6766.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6766.GEOID18 height accuracy estimate available here.
 HV6766
 HV6766.Click photographs - Photos may exist for this station.
 HV6766
 HV6766.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6766
 HV6766. The following values were computed from the NAD 83(1993) position.
 HV6766
 HV6766;                    North         East     Units Scale Factor Converg.
 HV6766;SPC MD       -    81,486.621   436,052.867   MT  0.99998411   +0 15 32.6
 HV6766;SPC MD       -   267,344.02  1,430,616.78   sFT  0.99998411   +0 15 32.6
 HV6766;UTM  18      - 4,251,392.087   361,398.496   MT  0.99983658   -0 59 09.9
 HV6766
 HV6766!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6766!SPC MD       -   1.00000506  x   0.99998411  =   0.99998917
 HV6766!UTM  18      -   1.00000506  x   0.99983658  =   0.99984164
 HV6766
 HV6766:                Primary Azimuth Mark                     Grid Az
 HV6766:SPC MD       -  HUTCHINS MSFC 1908                       112 32 00.1
 HV6766:UTM  18      -  HUTCHINS MSFC 1908                       113 46 42.6
 HV6766
 HV6766_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6139851392(NAD 83)
 HV6766
 HV6766|---------------------------------------------------------------------|
 HV6766| PID    Reference Object                     Distance      Geod. Az  |
 HV6766|                                                           dddmmss.s |
 HV6766| HV6782 HUTCHINS MSFC 1908                  APPROX. 3.4 KM 1124732.7 |
 HV6766| HV6781 COLE MSFC 1908 RM                    13.537 METERS 26310     |
 HV6766|---------------------------------------------------------------------|
 HV6766
 HV6766                          SUPERSEDED SURVEY CONTROL
 HV6766
 HV6766  NAD 83(1991)-  38 24 00.06635(N)    076 35 14.16183(W) AD(       ) 2
 HV6766  NAD 83(1986)-  38 24 00.06595(N)    076 35 14.17571(W) AD(       ) 2
 HV6766  NAD 27      -  38 23 59.61500(N)    076 35 15.33400(W) AD(       ) 2
 HV6766  USSD        -  38 23 59.97700(N)    076 35 15.07700(W) AD(       ) 3
 HV6766
 HV6766.Superseded values are not recommended for survey control.
 HV6766
 HV6766.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6766.See file dsdata.pdf to determine how the superseded data were derived.
 HV6766
 HV6766_MARKER: N = NAIL
 HV6766_SETTING: 0 = UNSPECIFIED SETTING
 HV6766_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6766
 HV6766  HISTORY     - Date     Condition        Report By
 HV6766  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6766  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV6766  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6766
 HV6766                          STATION DESCRIPTION
 HV6766
 HV6766'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6766'ON THE SW SHORE OF PATUXENT RIVER, ABOUT 1/4 MILE NW OF COLE
 HV6766'CREEK, ABOUT 35 FEET ABOVE HIGH-WATER MARK, ON A GRASS PENINSULA,
 HV6766'3 YARDS SSW OF EDGE OF BLUFF WHICH IS WASHING RAPIDLY, 8 YARDS W
 HV6766'OF EXTREME EDGE OF BLUFF WHERE IT TURNS IN AND IS NOT WASHING BUT
 HV6766'SLOPES GRADUALLY TO WATER, 8 YARDS N OF ANOTHER EDGE OF BLUFF, 10
 HV6766'YARDS NW OF TREES ON SLOPE OF BANK, AND 20 YARDS W OF CHERRY TREE
 HV6766'2 FEET IN DIAMETER.
 HV6766'
 HV6766'STATION MARK IS NAIL IN STUB, WITH TOP FLUSH WITH GROUND.
 HV6766'
 HV6766'REFERENCE MARK IS CENTER OF STANDARD CEMENT MONUMENT OF MARYLAND
 HV6766'SHELL FISH SURVEY.  IT IS 13.53 METERS (44.4 FEET) FROM STATION S
 HV6766'89 DEG 09 MIN W.  DISTANCES AND BEARINGS FROM THE STATION TO OTHER
 HV6766'POINTS OF REFERENCE ARE AS FOLLOWS--
 HV6766'
 HV6766'NAIL IN BLAZE IN 24-INCH CHERRY TREE, 18.65 METERS (61.2 FEET), S
 HV6766'79 DEG 58 MIN W.  RIGHT CHIMNEY OF HOUSE, 1/4 MILE, N 68 DEG 2
 HV6766'MIN W.  RIGHT END OF PEAK OF ROOF OF FORREST WHARF HOUSE, 1-1/2
 HV6766'MILES, N 44 DEG 52 MIN W.  RIGHT END OF HOUSE, 3 MILES, N 3 DEG 52
 HV6766'MIN E.  LEFT END OF PEAK OF HOUSE, 3 MILES, N 33 DEG 10 MIN E.
 HV6766'GILT BALL ON BROOMES HOUSE, 2 MILES, N 74 DEG 18 MIN E.  RIGHT
 HV6766'TANGENT OF BROOMES ISLAND, 1-3/4 MILES, N 87 DEG 4 MIN E.  LEFT
 HV6766'END OF PEAK OF ROOF ON JONES WHARF HOUSE, 1-1/2 MILES, S 60 DEG 48
 HV6766'MIN E.  NAIL IN BLAZE IN LIMB OF 4-INCH OAK TREE, 10.80 METERS
 HV6766'(35.4 FEET), S 45 DEG 8 MIN E.  SCREW IN BLAZE IN CROTCH OF
 HV6766'15-INCH OAK TREE, 12.67 METERS (41.6 FEET), S 28 DEG 55 MIN E.
 HV6766'NAIL IN BLAZE IN 6-INCH CEDAR TREE, 8.43 METERS (27.66 FEET), S 3
 HV6766'DEG 32 MIN E.
 HV6766
 HV6766                          STATION RECOVERY (1930)
 HV6766
 HV6766'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6766'STATION MARK GONE BUT STONE INTACT AND TRIPOD ERECTED OVER STONE.
 HV6766
 HV6766                          STATION RECOVERY (1943)
 HV6766
 HV6766'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6766'THE LOCALITY WAS SEARCHED BUT THE STATION COULD NOT BE FOUND.  THE
 HV6766'REFERENCE MARK WHICH IS NOW SERVING AS THE REFERENCE MARK FOR
 HV6766'STATION COLE 2 WAS FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6781 ***********************************************************************
 HV6781  DESIGNATION -  COLE MSFC 1908 RM
 HV6781  PID         -  HV6781
 HV6781  STATE/COUNTY-  MD/ST MARYS
 HV6781  COUNTRY     -  US
 HV6781  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6781
 HV6781                         *CURRENT SURVEY CONTROL
 HV6781  ______________________________________________________________________
 HV6781* NAD 83(1993) POSITION- 38 24 00.01403(N) 076 35 14.71482(W)   ADJUSTED
 HV6781* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6781  ______________________________________________________________________
 HV6781  GEOID HEIGHT    -        -33.977 (meters)                     GEOID18
 HV6781  LAPLACE CORR    -         -6.07  (seconds)                    DEFLEC18
 HV6781  HORZ ORDER      -  SECOND
 HV6781
 HV6781.The horizontal coordinates were established by classical geodetic methods
 HV6781.and adjusted by the National Geodetic Survey in November 1994.
 HV6781
 HV6781.The orthometric height was scaled from a topographic map.
 HV6781
 HV6781.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6781.GEOID18 height accuracy estimate available here.
 HV6781
 HV6781.Click photographs - Photos may exist for this station.
 HV6781
 HV6781.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6781
 HV6781. The following values were computed from the NAD 83(1993) position.
 HV6781
 HV6781;                    North         East     Units Scale Factor Converg.
 HV6781;SPC MD       -    81,484.948   436,039.434   MT  0.99998411   +0 15 32.2
 HV6781;SPC MD       -   267,338.53  1,430,572.71   sFT  0.99998411   +0 15 32.2
 HV6781;UTM  18      - 4,251,390.707   361,385.032   MT  0.99983663   -0 59 10.2
 HV6781
 HV6781!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6781!SPC MD       -   1.00000506  x   0.99998411  =   0.99998917
 HV6781!UTM  18      -   1.00000506  x   0.99983663  =   0.99984169
 HV6781
 HV6781_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6138551390(NAD 83)
 HV6781
 HV6781                          SUPERSEDED SURVEY CONTROL
 HV6781
 HV6781  NAD 83(1991)-  38 24 00.01405(N)    076 35 14.71574(W) AD(       ) 2
 HV6781  NAD 83(1986)-  38 24 00.01366(N)    076 35 14.72958(W) AD(       ) 2
 HV6781  NAD 27      -  38 23 59.56300(N)    076 35 15.88800(W) AD(       ) 2
 HV6781
 HV6781.Superseded values are not recommended for survey control.
 HV6781
 HV6781.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6781.See file dsdata.pdf to determine how the superseded data were derived.
 HV6781
 HV6781_MARKER: H = DRILL HOLE
 HV6781_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6781_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6781+STABILITY: SURFACE MOTION
 HV6781
 HV6781  HISTORY     - Date     Condition        Report By
 HV6781  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6781
 HV6781                          STATION DESCRIPTION
 HV6781
 HV6781'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908
 HV6781'STATION IS ON THE SW SHORE OF THE PATUXENT RIVER, ABOUT 1/4 MILE
 HV6781'NW OF COLE CREEK, ON A GRASS PENINSULA ABOUT 35 FEET ABOVE
 HV6781'HIGH-WATER MARK.  IT IS 5 FEET SW OF EDGE OF BANK, 3 FEET NE OF
 HV6781'WIRE FENCE, STAMPED COLE 2 1942, AND PROJECTS ABOUT 2 INCHES.
 HV6781'
 HV6781'COLE MDSFC RM IS E OF COLE 2.  IT IS MARKED BY A HOLE IN THE
 HV6781'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6781'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH THE TOP
 HV6781'PROJECTING 3 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6781'COUNTERSUNK IN THE TOP OF POST.
 HV6781'
 HV6781'TO REACH THE STATION FROM HOLLYWOOD, GO N ON MACADAM ROAD FOR 3.2
 HV6781'MILES TO GRAVEL ROAD RIGHT, TURN RIGHT AND GO 0.6 MILE TO FORKS,
 HV6781'BEAR RIGHT AND GO 1.0 MILE TO FORKS, BEAR LEFT AND GO 0.55 MILE TO
 HV6781'SAMSONS FARMS.  HERE TURN RIGHT THROUGH GATE AND BEAR LEFT TO
 HV6781'EDGE OF BLUFF, THEN TURN RIGHT AND FOLLOW BLUFF FOR ABOUT 0.3
 HV6781'MILE TO END OF TRUCK TRAVEL.  LEAVE TRUCK AND PROCEED ON FOOT
 HV6781'ABOUT 300 FEET TO THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5945 ***********************************************************************
 JV5945  DESIGNATION -  COLESVILLE
 JV5945  PID         -  JV5945
 JV5945  STATE/COUNTY-  MD/MONTGOMERY
 JV5945  COUNTRY     -  US
 JV5945  USGS QUAD   -  BELTSVILLE (2016)
 JV5945
 JV5945                         *CURRENT SURVEY CONTROL
 JV5945  ______________________________________________________________________
 JV5945* NAD 83(1991) POSITION- 39 05 11.01524(N) 076 59 57.06163(W)   ADJUSTED
 JV5945* NAVD 88 ORTHO HEIGHT -   148.4   (meters)      487.    (feet) VERTCON3
 JV5945  ______________________________________________________________________
 JV5945  GEOID HEIGHT    -        -31.966 (meters)                     GEOID18
 JV5945  LAPLACE CORR    -         -3.00  (seconds)                    DEFLEC18
 JV5945  HORZ ORDER      -  FIRST
 JV5945
 JV5945.The horizontal coordinates were established by classical geodetic methods
 JV5945.and adjusted by the National Geodetic Survey in January 1992.
 JV5945
 JV5945.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5945.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5945
 JV5945.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5945.GEOID18 height accuracy estimate available here.
 JV5945
 JV5945.Click photographs - Photos may exist for this station.
 JV5945
 JV5945.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5945
 JV5945. The following values were computed from the NAD 83(1991) position.
 JV5945
 JV5945;                    North         East     Units Scale Factor Converg.
 JV5945;SPC MD       -   157,596.814   400,070.617   MT  0.99995658   +0 00 01.8
 JV5945;SPC MD       -   517,048.88  1,312,565.02   sFT  0.99995658   +0 00 01.8
 JV5945;UTM  18      - 4,328,266.166   327,090.615   MT  0.99996815   -1 15 38.8
 JV5945
 JV5945!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5945!SPC MD       -   0.99998173  x   0.99995658  =   0.99993831
 JV5945!UTM  18      -   0.99998173  x   0.99996815  =   0.99994988
 JV5945
 JV5945:                Primary Azimuth Mark                     Grid Az
 JV5945:SPC MD       -  COLESVILLE AZ MK                         197 52 45.8
 JV5945:UTM  18      -  COLESVILLE AZ MK                         199 08 26.4
 JV5945
 JV5945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2709028266(NAD 83)
 JV5945
 JV5945|---------------------------------------------------------------------|
 JV5945| PID    Reference Object                     Distance      Geod. Az  |
 JV5945|                                                           dddmmss.s |
 JV5945| CB1099 COLESVILLE RM 1                      44.202 METERS 04423     |
 JV5945| JV5959 BURTONSVILLE METH CH SPIRE          APPROX. 5.8 KM 0674115.1 |
 JV5945| JV5944 COLESVILLE EPIS CHAPEL CHURCH       190.208 METERS 18310     |
 JV5945| CB1098 COLESVILLE AZ MK                                   1975247.6 |
 JV5945| CB1100 COLESVILLE RM 2                      36.600 METERS 34519     |
 JV5945|---------------------------------------------------------------------|
 JV5945
 JV5945                          SUPERSEDED SURVEY CONTROL
 JV5945
 JV5945  NAD 83(1986)-  39 05 11.01461(N)    076 59 57.07169(W) AD(       ) 1
 JV5945  NAD 27      -  39 05 10.62367(N)    076 59 58.15547(W) AD(       ) 1
 JV5945  NGVD 29 (07/19/86)  148.6    (m)          488.     (f) VERT ANG       
 JV5945
 JV5945.Superseded values are not recommended for survey control.
 JV5945
 JV5945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5945.See file dsdata.pdf to determine how the superseded data were derived.
 JV5945
 JV5945_MARKER: DS = TRIANGULATION STATION DISK
 JV5945_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5945_STAMPING: COLESVILLE 1969
 JV5945_MARK LOGO: CGS
 JV5945_PROJECTION: FLUSH
 JV5945_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5945_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5945+STABILITY: SURFACE MOTION
 JV5945_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5945+SATELLITE: SATELLITE OBSERVATIONS - June 12, 2020
 JV5945
 JV5945  HISTORY     - Date     Condition        Report By
 JV5945  HISTORY     - 1969     MONUMENTED       CGS
 JV5945  HISTORY     - 20040103 GOOD             GEOCAC
 JV5945  HISTORY     - 20050405 GOOD             USPSQD
 JV5945  HISTORY     - 20060401 GOOD             NGS
 JV5945  HISTORY     - 20150312 GOOD             PROFLN
 JV5945  HISTORY     - 20200612 GOOD             PROFLN
 JV5945
 JV5945                          STATION DESCRIPTION
 JV5945
 JV5945'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV5945'THE STATION IS ABOUT 4-1/4 MILES NORTHEAST OF WHEATON, 3-1/2 MILES
 JV5945'NORTHWEST OF THE MONTGOMERY-PRINCE GEORGES COUNTY LINE, 3/4 MILE
 JV5945'NORTH OF COLESVILLE, ON THE GROUNDS OF THE COLESVILLE ELEMENTARY
 JV5945'SCHOOL, AND ON MONTGOMERY COUNTY PUBLIC SCHOOLS PROPERTY.
 JV5945'
 JV5945'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 183 AND
 JV5945'STATE HIGHWAY 650 IN COLESVILLE, GO NORTH ON STATE HIGHWAY 650
 JV5945'FOR 0.55 MILE TO THE AZIMUTH MARK ON THE LEFT.  CONTINUE NORTH ON
 JV5945'STATE HIGHWAY 650 FOR 0.2 MILE TO THE COLESVILLE ELEMENTARY SCHOOL
 JV5945'AND THE STATION ON THE RIGHT AT 14015 NEW HAMPSHIRE AVENUE
 JV5945'NORTHWEST.
 JV5945'
 JV5945'THE STATION MARK IS A STANDARD DISK, STAMPED COLESVILLE 1969, SET
 JV5945'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV5945'IS FLUSH WITH THE GROUND SURFACE.  IT IS 161.0 FEET WEST OF THE
 JV5945'NORTH CORNER OF THE NORTHEAST WING OF THE SCHOOL BUILDING, 90.0
 JV5945'FEET NORTH OF THE NORTH CORNER OF THE NORTHWEST WING OF THE
 JV5945'SCHOOL BUILDING, AND 86.5 FEET SOUTHEAST OF THE CENTERLINE OF
 JV5945'STATE HIGHWAY 650.  THE UNDERGROUND MARK IS 42 INCHES BELOW
 JV5945'THE GROUND SURFACE.
 JV5945'
 JV5945'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED COLESVILLE NO 1 1969,
 JV5945'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV5945'THAT PROJECTS 4 INCHES ABOVE THE GROUND SURFACE.  IT IS 183.0 FEET
 JV5945'SOUTHEAST OF THE CENTERLINE OF STATE HIGHWAY 650, 92.7 FEET NORTH
 JV5945'OF THE NORTH CORNER OF THE NORTHEAST WING OF THE SCHOOL BUILDING,
 JV5945'AND ABOUT THE SAME ELEVATION AS THE STATION.
 JV5945'
 JV5945'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED COLESVLLE NO 2 1969,
 JV5945'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV5945'THAT PROJECTS 4 INCHES ABOVE THE GROUND SURFACE.  IT IS 62.0 FEET
 JV5945'NORTH OF THE CENTERLINE OF A DRIVEWAY INTO THE SCHOOL PARKING
 JV5945'LOT, 53.0 FEET SOUTHEAST OF THE CENTERLINE OF STATE HIGHWAY 650,
 JV5945'2.0 FEET SOUTH OF AN EAST-WEST ROW OF TREES, AND ABOUT THE SAME
 JV5945'ELEVATION AS THE STATION.
 JV5945'
 JV5945'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED COLESVILLE 1969, SET
 JV5945'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV5945'IS FLUSH WITH THE GROUND SURFACE.  IT IS 26.5 FEET WEST OF THE
 JV5945'CENTERLINE OF STATE HIGHWAY 650, 3.7 FEET SOUTHEAST OF A WITNESS
 JV5945'POST, AND 2.2 FEET EAST OF A BOARD FENCE.
 JV5945'
 JV5945'THE DISTANCE BETWEEN REFERENCE MARKS COULD NOT BE MEASURED DUE
 JV5945'TO OBSTRUCTIONS.
 JV5945
 JV5945                          STATION RECOVERY (2004)
 JV5945
 JV5945'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JV5945'FORMER ELEMENTARY SCHOOL IS NOW COLESVILLE CENTER. STATION DISK FOUND
 JV5945'AS DESCRIBED, APPROXIMATELY 1.3 FEET NORTHWEST OF A CARSONITE WITNESS
 JV5945'POST AND APPROXIMATELY 22 FEET SOUTHEAST OF POWER POLE 800456-1327.
 JV5945'
 JV5945'REFERENCE MARK 1 FOUND JUST INSIDE WOODS AT NORTHEAST CORNER OF SMALL
 JV5945'PARKING AREA ON THE NORTH SIDE OF THE BUILDING, AND APPROXIMATELY 1.5
 JV5945'FEET SOUTHWEST OF A CARSONITE WITNESS POST.
 JV5945'
 JV5945'REFERENCE MARK 2 AND AZIMUTH MARK NOT SEARCHED FOR.
 JV5945
 JV5945                          STATION RECOVERY (2005)
 JV5945
 JV5945'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV5945'RECOVERED IN GOOD CONDITION.
 JV5945
 JV5945                          STATION RECOVERY (2006)
 JV5945
 JV5945'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV5945'STATION MARK AND RM 1 RECOVERED IN GOOD CONDITION.  RM 2 AND THE AZ MK
 JV5945'HAVE BEEN DESTROYED BY THE WIDENING OF NEW HAMPSHIRE AVE.
 JV5945
 JV5945                          STATION RECOVERY (2015)
 JV5945
 JV5945'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2015 (JRO)
 JV5945'THE MAIN STATION AND REFERENCE MARK 1 WERE RECOVERED AND PHOTOS TAKEN
 JV5945'OF THE MAIN STATION.  IT IS AT COLESVILLE CENTER AS MENTIONED IN 2004,
 JV5945'ADDRESS 14015 NEW HAMPSHIRE AVENUE.
 JV5945'
 JV5945'BESIDES THE TWO TIES FROM THE BUILDING NOTED IN 1969 DESCRIPTION, THE
 JV5945'MARK IS LOCATED AS FOLLOWS.  47.2 FT (14.4 M) SOUTH-SOUTHEAST OF THE
 JV5945'NORTH END OF A WOODEN GUARD RAIL, 40.0 FT (12.2 M) NORTH OF THE
 JV5945'NORTHWEST CORNER OF A CHAIN LINK FENCE AROUND A PLAYGROUND, 21.5 FT
 JV5945'(6.6 M) EAST OF THE EAST FACE OF CURB, 16.0 FT (4.9 M) SOUTH-SOUTHWEST
 JV5945'OF THE SOUTHWEST FACE OF 48 INCH 4-TRUNK OAK TREE, 16.0 FT (4.9 M)
 JV5945'NORTHWEST OF A 3 INCH (8 CM) SAPLING, 14.0 FT (4.3 M) EAST OF THE BACK
 JV5945'OF THE WOOD GUARD RAIL, 12.7 FT (3.9 M) WEST OF THE WEST SIDE OF 7 FT
 JV5945'(2.1 M) WIDE SIDEWALK AND 11.5 FT (3.5 M) SOUTHEAST OF A POLE WITH TWO
 JV5945'SETS OF NUMBERS - 15026 B AND 800456-1326.  THERE IS NO WITNESS POST
 JV5945'HERE ANY MORE.
 JV5945'
 JV5945'NO NEW TIES WERE TAKEN AT REFERENCE MARK 1 BUT AS LONG AS THE WITNESS
 JV5945'POST REMAINS THERE IT IS FAIRLY OBVIOUS.
 JV5945
 JV5945                          STATION RECOVERY (2020)
 JV5945
 JV5945'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV5945'COLESVILLE, STATION AND REFERENCE MARK 1 GOOD.  THE MARK IS 15 FT (4.6
 JV5945'M) EAST OF A WITNESS SIGN FASTENED TO THE WEST SIDE OF THE WOOD GUARD
 JV5945'RAIL.  THE BIG OAK TREE THAT WAS NE OF THE MARK HAS BEEN CUT DOWN.
 JV5945'
 JV5945'RM 1 IS 8 FT (2.4 M) NORTHEAST OF THE NORTHEAST CORNER OF AN ASPHALT
 JV5945'PARKING LOT, NW OF A DUMPSTER, 1.5 FT (0.5 M) SOUTH OF A WSSC WITNESS
 JV5945'POST, FLUSH WITH THE GROUND AND GROWN OVER WITH RASPBERRIES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5944 ***********************************************************************
 JV5944  DESIGNATION -  COLESVILLE EPIS CHAPEL CHURCH
 JV5944  PID         -  JV5944
 JV5944  STATE/COUNTY-  MD/MONTGOMERY
 JV5944  COUNTRY     -  US
 JV5944  USGS QUAD   -  BELTSVILLE (2016)
 JV5944
 JV5944                         *CURRENT SURVEY CONTROL
 JV5944  ______________________________________________________________________
 JV5944* NAD 83(1991) POSITION- 39 05 04.85669(N) 076 59 57.49828(W)   ADJUSTED
 JV5944  ______________________________________________________________________
 JV5944  GEOID HEIGHT    -        -31.967 (meters)                     GEOID18
 JV5944  LAPLACE CORR    -         -3.00  (seconds)                    DEFLEC18
 JV5944  HORZ ORDER      -  THIRD
 JV5944
 JV5944.The horizontal coordinates were established by classical geodetic methods
 JV5944.and adjusted by the National Geodetic Survey in January 1992.
 JV5944
 JV5944.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5944.GEOID18 height accuracy estimate available here.
 JV5944
 JV5944.Click photographs - Photos may exist for this station.
 JV5944
 JV5944.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5944
 JV5944. The following values were computed from the NAD 83(1991) position.
 JV5944
 JV5944;                    North         East     Units Scale Factor Converg.
 JV5944;SPC MD       -   157,406.905   400,060.124   MT  0.99995647   +0 00 01.6
 JV5944;SPC MD       -   516,425.82  1,312,530.59   sFT  0.99995647   +0 00 01.6
 JV5944;UTM  18      - 4,328,076.531   327,075.945   MT  0.99996821   -1 15 38.9
 JV5944
 JV5944_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2707528076(NAD 83)
 JV5944
 JV5944                          SUPERSEDED SURVEY CONTROL
 JV5944
 JV5944  NAD 83(1986)-  39 05 04.85606(N)    076 59 57.50821(W) AD(       ) 3
 JV5944  NAD 27      -  39 05 04.46766(N)    076 59 58.59158(W) AD(       ) 3
 JV5944
 JV5944.Superseded values are not recommended for survey control.
 JV5944
 JV5944.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5944.See file dsdata.pdf to determine how the superseded data were derived.
 JV5944
 JV5944_MARKER: 90 = CHURCH SPIRE
 JV5944_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5944+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV5944
 JV5944  HISTORY     - Date     Condition        Report By
 JV5944  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV5944  HISTORY     - 20031201 GOOD             USPSQD
 JV5944  HISTORY     - 20050303 GOOD             USPSQD
 JV5944
 JV5944                          STATION DESCRIPTION
 JV5944
 JV5944'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5944'THE STATION IS THE CENTER OF THE SPIRE ON THE EPISCOPAL CHAPEL
 JV5944'OF THE TRANSFIGURATION CHURCH, AND HAS A OVERALL HEIGHT OF ABOUT
 JV5944'65 FEET.
 JV5944'
 JV5944'IT IS LOCATED AT THE SOUTHEAST CORNER OF THE INTERSECTION OF
 JV5944'NEW HAMPSHIRE AVENUE AND HOBBS DRIVE.
 JV5944
 JV5944                          STATION RECOVERY (2003)
 JV5944
 JV5944'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5944'RECOVERED IN GOOD CONDITION.
 JV5944
 JV5944                          STATION RECOVERY (2005)
 JV5944
 JV5944'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV5944'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4292 ***********************************************************************
 JV4292  DESIGNATION -  COLESVILLE METH CH SPIRE
 JV4292  PID         -  JV4292
 JV4292  STATE/COUNTY-  MD/MONTGOMERY
 JV4292  COUNTRY     -  US
 JV4292  USGS QUAD   -  KENSINGTON (2016)
 JV4292
 JV4292                         *CURRENT SURVEY CONTROL
 JV4292  ______________________________________________________________________
 JV4292* NAD 83(1991) POSITION- 39 04 23.95533(N) 077 00 24.53960(W)   ADJUSTED
 JV4292  ______________________________________________________________________
 JV4292  GEOID HEIGHT    -        -31.961 (meters)                     GEOID18
 JV4292  LAPLACE CORR    -         -2.98  (seconds)                    DEFLEC18
 JV4292  HORZ ORDER      -  THIRD
 JV4292
 JV4292.The horizontal coordinates were established by classical geodetic methods
 JV4292.and adjusted by the National Geodetic Survey in January 1992.
 JV4292
 JV4292.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4292.GEOID18 height accuracy estimate available here.
 JV4292
 JV4292.Click photographs - Photos may exist for this station.
 JV4292
 JV4292.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4292
 JV4292. The following values were computed from the NAD 83(1991) position.
 JV4292
 JV4292;                    North         East     Units Scale Factor Converg.
 JV4292;SPC MD       -   156,145.663   399,410.142   MT  0.99995577   -0 00 15.4
 JV4292;SPC MD       -   512,287.90  1,310,398.11   sFT  0.99995577   -0 00 15.4
 JV4292;UTM  18      - 4,326,829.883   326,398.353   MT  0.99997110   -1 15 54.9
 JV4292
 JV4292_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2639826829(NAD 83)
 JV4292
 JV4292                          SUPERSEDED SURVEY CONTROL
 JV4292
 JV4292  NAD 83(1986)-  39 04 23.95464(N)    077 00 24.54965(W) AD(       ) 3
 JV4292  NAD 27      -  39 04 23.56376(N)    077 00 25.63282(W) AD(       ) 3
 JV4292
 JV4292.Superseded values are not recommended for survey control.
 JV4292
 JV4292.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4292.See file dsdata.pdf to determine how the superseded data were derived.
 JV4292
 JV4292_MARKER: 90 = CHURCH SPIRE
 JV4292_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4292+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4292
 JV4292  HISTORY     - Date     Condition        Report By
 JV4292  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4292  HISTORY     - 19950818 GOOD             USPSQD
 JV4292  HISTORY     - 20031201 GOOD             USPSQD
 JV4292  HISTORY     - 20050303 GOOD             USPSQD
 JV4292
 JV4292                          STATION DESCRIPTION
 JV4292
 JV4292'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4292'THE STATION IS THE COLESVILLE METHODIST CHURCH SPIRE.  THE POINT
 JV4292'OBSERVED WAS THE CENTER OF THE BASE OF THE CROSS ON THE TOP OF THE
 JV4292'100 FOOT HIGH SPIRE.
 JV4292'
 JV4292'IT IS LOCATED 0.25 MILE WEST OF THE JUNCTION OF STATE HIGHWAYS
 JV4292'183 AND 650 AND 100 FEET SOUTH OF STATE HIGHWAY 183.
 JV4292
 JV4292                          STATION RECOVERY (1995)
 JV4292
 JV4292'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4292'RECOVERED IN GOOD CONDITION.
 JV4292
 JV4292                          STATION RECOVERY (2003)
 JV4292
 JV4292'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV4292'RECOVERED IN GOOD CONDITION.
 JV4292
 JV4292                          STATION RECOVERY (2005)
 JV4292
 JV4292'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4292'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1447 ***********************************************************************
 HV1447  DESIGNATION -  COLLEGE
 HV1447  PID         -  HV1447
 HV1447  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1447  COUNTRY     -  US
 HV1447  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1447
 HV1447                         *CURRENT SURVEY CONTROL
 HV1447  ______________________________________________________________________
 HV1447* NAD 83(1991) POSITION- 38 59 04.91364(N) 076 56 41.01801(W)   ADJUSTED
 HV1447* NAVD 88 ORTHO HEIGHT -    50.683 (meters)      166.28  (feet) ADJUSTED
 HV1447  ______________________________________________________________________
 HV1447  GEOID HEIGHT    -        -32.114 (meters)                     GEOID18
 HV1447  LAPLACE CORR    -         -4.10  (seconds)                    DEFLEC18
 HV1447  DYNAMIC HEIGHT  -         50.657 (meters)      166.20  (feet) COMP
 HV1447  MODELED GRAVITY -    980,107.4   (mgal)                       NAVD 88
 HV1447
 HV1447  HORZ ORDER      -  FIRST
 HV1447  VERT ORDER      -  FIRST     CLASS I
 HV1447
 HV1447.The horizontal coordinates were established by classical geodetic methods
 HV1447.and adjusted by the National Geodetic Survey in January 1992.
 HV1447
 HV1447.The orthometric height was determined by differential leveling and
 HV1447.adjusted by the NATIONAL GEODETIC SURVEY
 HV1447.in June 1991.
 HV1447
 HV1447.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1447.GEOID18 height accuracy estimate available here.
 HV1447
 HV1447.Click photographs - Photos may exist for this station.
 HV1447
 HV1447.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1447
 HV1447.The dynamic height is computed by dividing the NAVD 88
 HV1447.geopotential number by the normal gravity value computed on the
 HV1447.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1447.degrees latitude (g = 980.6199 gals.).
 HV1447
 HV1447.The modeled gravity was interpolated from observed gravity values.
 HV1447
 HV1447. The following values were computed from the NAD 83(1991) position.
 HV1447
 HV1447;                    North         East     Units Scale Factor Converg.
 HV1447;SPC MD       -   146,309.009   404,788.881   MT  0.99995165   +0 02 04.9
 HV1447;SPC MD       -   480,015.47  1,328,044.85   sFT  0.99995165   +0 02 04.9
 HV1447;UTM  18      - 4,316,877.294   331,559.579   MT  0.99994937   -1 13 25.5
 HV1447
 HV1447!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1447!SPC MD       -   0.99999709  x   0.99995165  =   0.99994874
 HV1447!UTM  18      -   0.99999709  x   0.99994937  =   0.99994646
 HV1447
 HV1447:                Primary Azimuth Mark                     Grid Az
 HV1447:SPC MD       -  COLLEGE RM 1 AZIMUTH                     045 45 12.6
 HV1447:UTM  18      -  COLLEGE RM 1 AZIMUTH                     047 00 43.0
 HV1447
 HV1447_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3155916877(NAD 83)
 HV1447
 HV1447|---------------------------------------------------------------------|
 HV1447| PID    Reference Object                     Distance      Geod. Az  |
 HV1447|                                                           dddmmss.s |
 HV1447| CX2628 COLLEGE RM 1 AZIMUTH                               0454717.5 |
 HV1447| CX2633 COLLEGE RM 7                         24.357 METERS 04824     |
 HV1447| JV5862 AIRWAY BCN 57 B                     APPROX.11.9 KM 0671037.5 |
 HV1447| CX2631 COLLEGE RM 4                         28.534 METERS 08651     |
 HV1447| HV7756 NEW YORK WASH AIRWAY BCN 57A        APPROX. 4.9 KM 1305018.0 |
 HV1447| CX2632 COLLEGE RM 5                         29.786 METERS 14654     |
 HV1447| HV7664 COLLEGE PARK UNIV OF MD TANK         31.432 METERS 14917     |
 HV1447| HV1448 COLLEGE RM 6                         31.303 METERS 17220     |
 HV1447| CX2629 COLLEGE RM 2                         48.521 METERS 23036     |
 HV1447| CX2630 COLLEGE RM 3                         58.147 METERS 30857     |
 HV1447|---------------------------------------------------------------------|
 HV1447
 HV1447                          SUPERSEDED SURVEY CONTROL
 HV1447
 HV1447  NAD 83(1986)-  38 59 04.91267(N)    076 56 41.02894(W) AD(       ) 1
 HV1447  NAD 27      -  38 59 04.51627(N)    076 56 42.11917(W) AD(       ) 1
 HV1447  NGVD 29              50.90   (m)          167.0    (f) LEVELING    3  
 HV1447  NGVD 29 (11/26/84)   50.914  (m)          167.04   (f) ADJUSTED    1 1
 HV1447
 HV1447.Superseded values are not recommended for survey control.
 HV1447
 HV1447.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1447.See file dsdata.pdf to determine how the superseded data were derived.
 HV1447
 HV1447_MARKER: DS = TRIANGULATION STATION DISK
 HV1447_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1447_STAMPING: COLLEGE 1933
 HV1447_MARK LOGO: CGS
 HV1447_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1447+STABILITY: SURFACE MOTION
 HV1447_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1447+SATELLITE: SATELLITE OBSERVATIONS - May 13, 2002
 HV1447
 HV1447  HISTORY     - Date     Condition        Report By
 HV1447  HISTORY     - 1933     MONUMENTED       CGS
 HV1447  HISTORY     - 1943     GOOD             CGS
 HV1447  HISTORY     - 1958     MARK NOT FOUND   LOCSUR
 HV1447  HISTORY     - 1958     GOOD             CGS
 HV1447  HISTORY     - 1970     GOOD             NGS
 HV1447  HISTORY     - 1971     GOOD             NGS
 HV1447  HISTORY     - 1971     GOOD             NGS
 HV1447  HISTORY     - 19880718 GOOD             DEWDAV
 HV1447  HISTORY     - 20020513 GOOD             DEWDAV
 HV1447
 HV1447                          STATION DESCRIPTION
 HV1447
 HV1447'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 HV1447'THIS STATION IS ON THE CAMPUS OF THE UNIVERSITY OF MARYLAND.
 HV1447'
 HV1447'SURFACE, UNDERGROUND, AND REFERENCE MARK NO.1 ARE STANDARD
 HV1447'BRONZE DISKS SET IN CONCRETE.
 HV1447'
 HV1447'REFERENCE MARK NO.1 IS ABOUT 30 INCHES S OF MOST SOUTHERLY WALL
 HV1447'OF UNIVERSITY OF MARYLAND HORTICULTURE BUILDING AND ABOUT 5
 HV1447'INCHES W OF SHORT N AND S WALL, WHICH IS APPROXIMATELY 50 FEET
 HV1447'W OF THE CENTER OF THE ENTRANCE OF THE HORTICULTURE BUILDING.
 HV1447'
 HV1447'REFERENCE MARK NO.2 IS A STANDARD REFERENCE MARK DISK STAMPED
 HV1447'COLLEGE NO. 2 1933 SET IN THE TOP OF THE CENTER OF CONCRETE
 HV1447'CULVERT HEAD WALL.  IT IS ON THE W SIDE OF N AND S ROAD AND ABOUT
 HV1447'15 FEET N OF A CONCRETE LAMPPOST.  THE ARROW ON THE MARK POINTS
 HV1447'TOWARD THE STATION.
 HV1447'
 HV1447'REFERENCE MARK NO.3 IS A STANDARD DISK STAMPED COLLEGE NO.3 1933
 HV1447'SET WITH CEMENT IN THE TOP OF W END OF CONCRETE CULVERT HEAD
 HV1447'WALL ON THE S SIDE OF UNIVERSITY LANE, AND APPROXIMATELY 100 FEET
 HV1447'W OF THE POINT OF UNION OF THE PAVEMENTS OF UNIVERSITY LANE AND
 HV1447'A N AND S ROAD.  THE ARROW POINTS TOWARDS THE STATION.
 HV1447'
 HV1447'A TRUCK CAN BE DRIVEN DIRECTLY TO THE STATION MARK.
 HV1447'
 HV1447'TO REACH FROM DOWNTOWN WASHINGTON, D.C., TAKE RHODE ISLAND
 HV1447'AVENUE AND GO NE TO ITS END, THENCE CONTINUE ON U.S. HIGHWAY 1
 HV1447'(WASHINGTON-BALTIMORE PIKE) THROUGH MT. RAINIER, MARYLAND,
 HV1447'HYATTSVILLE, MARYLAND, AND RIVERDALE, MARYLAND, TO UNIVERSITY
 HV1447'LANE AND TURN LEFT.  GO 0.45 MILE W ON UNIVERSITY LANE TO THE
 HV1447'STATION ON THE LEFT.  IT IS 151 FEET S OF CENTER LINE OF
 HV1447'UNIVERSITY LANE, 120.5 FEET NW OF SW CORNER OF THE OLD LIBRARY,
 HV1447'112.5 FEET WNW OF THE NW CORNER OF OLD LIBRARY, AND 103 FEET N
 HV1447'OF CENTER OF BASE OF WATER TANK FEED PIPE.
 HV1447'
 HV1447'IT IS NECESSARY THAT THE INSTRUMENT TOWER HERE BE AT LEAST
 HV1447'110 FEET HIGH IN ORDER TO CLEAR THE LINE TO STATION HILL
 HV1447'1846.  OTHERWISE, 100 FEET WILL CLEAR ALL BUILDINGS AND TREES
 HV1447'STANDING AT PRESENT.
 HV1447'
 HV1447'THE SW CORNER OF A DWELLING HOUSE ABOUT 200 FEET ENE OF A
 HV1447'LARGE DORMITORY IS VISIBLE FROM THE GROUND.  A POINT ABOUT 10
 HV1447'FEET ABOVE THE GROUND WAS USED IN SIGHTING ON THE CORNER.
 HV1447'
 HV1447'THE EDGE OF THE CONCRETE TRIM BAND BETWEEN THE FIRST AND SECOND
 HV1447'FLOORS OF THE HORTICULTURE BUILDING WAS USED AS AN AZIMUTH MARK
 HV1447'AS LISTED HEREIN.  IT IS VISIBLE FROM THE GROUND AT THE STATION.
 HV1447'
 HV1447'NO OTHER OBJECTS EXCEPTING THOSE LISTED HEREIN AS VISIBLE FROM
 HV1447'THE GROUND WERE VISIBLE FROM THE GROUND.
 HV1447
 HV1447                          STATION RECOVERY (1943)
 HV1447
 HV1447'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV1447'STATION WAS FOUND IN GOOD CONDITION AS DESCRIBED EXCEPT THAT THE
 HV1447'TANK HAS BEEN TORN DOWN AND UNIVERSITY LANE HAS BEEN REROUTED
 HV1447'THROUGH THE CAMPUS.
 HV1447'
 HV1447'REFERENCE MARK 1 WAS RECOVERED IN GOOD CONDITION.  IT IS 50 FEET
 HV1447'W OF THE MAIN ENTRANCE TO THE HORTICULTURAL BUILDING, 30 INCHES
 HV1447'S AND 6 INCHES W OF THE CORNER OF THE SET-BACK FORMING THE
 HV1447'ENTRANCE, AND 2.7 FEET E OF A WALK WHICH ENTERS THE BUILDING IN
 HV1447'THE BASEMENT.
 HV1447'
 HV1447'REFERENCE MARKS 2 AND 3 WERE SEARCHED FOR BUT NOT
 HV1447'FOUND.  PROF. PYLE OF THE ENGINEERING SCHOOL AT THE UNIVERSITY OF
 HV1447'MARYLAND SAID THAT THE ROADS IN THIS VICINITY WERE CHANGED AND THAT
 HV1447'THE CULVERTS WERE COVERED TO A DEPTH OF 3 OR 4 FEET.  NO ATTEMPT
 HV1447'WAS MADE TO DIG FOR THEM.
 HV1447
 HV1447                          STATION RECOVERY (1958)
 HV1447
 HV1447'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1958 (FWW)
 HV1447'REPORTED BY FRANCIS W. WHITE, MECHANICAL ENGINEER, PHYSICAL PLANT
 HV1447'DEPT., U. OF MD., COLLEGE PARK MARYLAND--
 HV1447'
 HV1447'REFERENCE MARK 2 IS STAMPED COLLEGE NO 2 1933.  THIS MARK IS
 HV1447'REFERENCE MARK 2 ESTABLISHED FOR THE LOCATION OF BENCH MARK
 HV1447'COLLEGE.  REFERENCE MARKS 2 AND 3 WERE COVERED OVER TO A DEPTH OF
 HV1447'3 TO 4 FT. WHEN THE ROADS WERE CHANGED IN THIS AREA SOME YEARS
 HV1447'AGO.  RECENT EXCAVATION (AUGUST 12, 1958) WITH A BACK-HOE FOR
 HV1447'EXTENSION OF UTILITIES TO A NEW BUILDING UNCOVERED AND TORE OUT
 HV1447'ABOUT 1/3 OF THE MARKER PLATE WHICH WAS RECOVERED.
 HV1447
 HV1447                          STATION RECOVERY (1958)
 HV1447
 HV1447'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1447'THE STATION AND REFERENCE MARK 1 (AZIMUTH MARK) WERE RECOVERED AND
 HV1447'FOUND TO BE IN GOOD CONDITION.  REFERENCE MARKS 2 AND 3 WERE NOT
 HV1447'RECOVERED AND ARE BELIEVED LOST.  TWO NEW REFERENCE MARKS WERE SET,
 HV1447'NUMBER 4 AND 5.  NEW MARKS ARE STANDARD BRONZE DISKS SET IN
 HV1447'CONCRETE.
 HV1447'
 HV1447'A COMPLETE DESCRIPTION FOLLOWS--
 HV1447'
 HV1447'STATION IS LOCATED ON THE HIGHEST HILL ON THE CAMPUS OF THE
 HV1447'UNIVERSITY OF MARYLAND, AND 48 FT. N OF A LARGE BLAZED OAK TREE.
 HV1447'
 HV1447'TO REACH THE STATION FROM THE RAILROAD STATION IN BELTSVILLE, GO S ON
 HV1447'U.S. HIGHWAY 1 FOR 3.7 MI. TO A TRAFFIC LIGHT AT THE ENTRANCE TO THE
 HV1447'UNIVERSITY CAMPUS, TURN RIGHT INTO UNIVERSITY GROUNDS (JUST S OF
 HV1447'THE PARKING LOT) AND GO W ON THE MAIN ROAD THROUGH THE CAMPUS FOR
 HV1447'0.4 MI. TO THE TOP OF A HILL, HERE KEEP LEFT AND GO 0.05 MI.,
 HV1447'THEN LEFT ON CHAPEL DRIVE FOR 0.1 MI. TO A STOP SIGN, CONTINUE AHEAD
 HV1447'FOR 0.1 MI. TO WHERE A NARROW DRIVE TURNS RIGHT, TURN RIGHT (UPHILL)
 HV1447'AND GO 100 YD.  TO THE STATION ON THE LEFT AS DESCRIBED.
 HV1447'
 HV1447'REFERENCE MARK 1 1933 (AZIMUTH MARK) IS 5-1/2 FT. E OF THE E EDGE OF
 HV1447'A SIDEWALK, 24-1/2 FT. W OF THE W EDGE OF THE MAIN ENTRANCE TO THE
 HV1447'HORTICULTURE BUILDING.  THE MARK IS A STANDARD BRONZE DISK SET IN
 HV1447'CONCRETE.  TO REACH REFERENCE MARK 1 (AZIMUTH MARK), WALK NE FROM
 HV1447'THE STATION FOR 0.3 MI. TO HOLZAPFEL HALL AND IS W OF THE ENTRANCE
 HV1447'AS DESCRIBED.
 HV1447'
 HV1447'REFERENCE MARK 4 1933 IS 6 FT. W OF THE CENTER OF A MANHOLE COVER,
 HV1447'19-1/2 FT. W-NW OF THE NW CORNER OF A BRICK BUILDING.  THE MARK IS
 HV1447'SET FLUSH AND THE DISK IS STAMPED COLLEGE NO 4 1933.
 HV1447'
 HV1447'REFERENCE MARK 5 1933 IS 73 FT. SW OF THE SW CORNER OF A BRICK
 HV1447'BUILDING, AND 46 FT. SE OF A LARGE BLAZED OAK TREE.  THE MARK IS SET
 HV1447'FLUSH AND THE DISK IS STAMPED COLLEGE NO 5 1933.
 HV1447
 HV1447                          STATION RECOVERY (1970)
 HV1447
 HV1447'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV1447'THE STATION MARK AND REFERENCE MARK 1 WERE RECOVERED IN GOOD
 HV1447'CONDITION.  REFERENCE MARKS 4 AND 5 HAVE BEEN DESTROYED BY
 HV1447'ADDITIONAL ROADS IN THE IMMEDIATE AREA.  FOLLOWING IS A NEW
 HV1447'COMPLETE DESCRIPTION.  REFERENCE MARKS 6 AND 7 WERE ESTABLISHED.
 HV1447'
 HV1447'THE STATION IS ABOUT 7-1/2 MILES NORTH-NORTHEAST OF CAPITAL
 HV1447'BUILDING IN WASHINGTON D.C., ON THE HIGHEST KNOLL ON THE CAMPUS
 HV1447'OF THE UNIVERSITY OF MARYLAND, NEAR WORCESTER HALL.
 HV1447'
 HV1447'TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY
 HV1447'495 AND U.S. HIGHWAY 1, ABOUT 4 MILES WEST OF GREENBELT, GO
 HV1447'SOUTH ON HIGHWAY 1 FOR 1.1 MILES TO THE JUNCTION WITH STATE
 HV1447'HIGHWAY 193.  CONTINUE SOUTHERLY ON HIGHWAY 1 FOR 0.95 MILE
 HV1447'TO THE ENTRANCE TO THE UNIVERSITY OF MARYLAND ON THE RIGHT.  TURN
 HV1447'RIGHT AND GO WEST ON CAMPUS DRIVE FOR 0.8 MILE TO THE WORCESTER
 HV1447'HALL, (GIRLS DORMITORY) ON THE LEFT.  TURN LEFT AND GO SOUTH
 HV1447'AND EAST AROUND TO THE BACK OF THE DORMITORY, TO A PARKING LOT
 HV1447'AND THE STATION ON THE LEFT.  TO REACH REFERENCE MARK 1 FROM THE
 HV1447'STATION, GO NORTHEAST FOR ABOUT 0.3 MILE TO HOLZAPFEL HALL AND
 HV1447'THE MARK WEST OF THE ENTRANCE.
 HV1447'
 HV1447'STATION MARK IS A STANDARD DISK, STAMPED COLLEGE 1933, SET IN
 HV1447'THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT IS FLUSH WITH
 HV1447'THE GROUND SURFACE.  IT IS 103.0 FEET SOUTHEAST OF THE NORTHEAST
 HV1447'CORNER OF THE WORCESTER HALL, 61.0 FEET EAST OF THE REAR ENTRANCE
 HV1447'TO THE HALL AND 54.5 FEET NORTH-NORTHEAST OF THE SOUTHEAST
 HV1447'CORNER OF THE BUILDING.
 HV1447'
 HV1447'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED COLLEGE NO 1 1933,
 HV1447'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT IS FLUSH
 HV1447'WITH THE GROUND SURFACE.  IT IS 49.0 FEET SOUTHEAST OF THE
 HV1447'SOUTHWEST CORNER OF HOLZAPFEL HALL, 21.0 FEET NORTH OF THE NORTH
 HV1447'EDGE OF A SIDEWALK, 12.0 FEET SOUTH OF THE SOUTH WALL OF THE
 HV1447'HOLZAPFEL HALL, 4.0 FEET SOUTH OF A DRAIN SPOUT AND 2.8 FEET
 HV1447'EAST OF THE EAST EDGE OF A SIDEWALK.
 HV1447'
 HV1447'REFERENCE MARK 6 IS A STANDARD DISK, STAMPED COLLEGE NO 6 1933
 HV1447'1969, CEMENTED IN A DRILL HOLE IN A SIDEWALK.  IT IS 28.0 FEET
 HV1447'EAST OF A FIRE HYDRANT, 6.2 FEET NORTHEAST OF THE SOUTHWEST
 HV1447'CORNER OF A PAIR OF CONCRETE STEPS, 4.5 FEET EAST-SOUTHEAST OF
 HV1447'THE NORTHEAST CORNER OF THE STEPS AND ABOUT 5 FEET HIGHER THAN
 HV1447'THE STATION.
 HV1447'
 HV1447'REFERENCE MARK 7 IS A STANDARD DISK, STAMPED COLLEGE NO 7 1933
 HV1447'1969, CEMENTED IN A DRILL HOLE IN A CONCRETE CURB.  IT IS 29.5
 HV1447'FEET WEST OF THE REAR ENTRANCE TO THE B P A BUILDING, 15.7 FEET
 HV1447'WEST OF THE CENTERLINE OF A SIDEWALK, 9.0 FEET NORTH OF THE
 HV1447'CENTERLINE OF A DRIVEWAY AND ABOUT 2 FEET LOWER THAN THE
 HV1447'STATION.
 HV1447'
 HV1447'REFERENCE MARK 6 TO 7 OBSTRUCTED.
 HV1447'
 HV1447'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV1447'IN COLLEGE PARK.
 HV1447
 HV1447                          STATION RECOVERY (1971)
 HV1447
 HV1447'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV1447'THE STATION MARK AND RM 6 WERE FOUND IN GOOD CONDITION.  NO OTHER
 HV1447'RMS OR NO AZIMUTH MARK WAS LOCATED AT THIS TIME.  THE STATION MARK
 HV1447'IS LOCATED AT THE UNIVERSITY OF MARYLAND IN COLLEGE PARK, ON THE
 HV1447'NORTHWEST SLOPE OF A HILL, 200 FEET NORTHEAST OF THE CENTER LINE
 HV1447'OF A ROAD ON THE SOUTH SIDE OF THE CAMPUS, 54.6 FEET NORTHEAST OF
 HV1447'THE NORTHEAST CORNER OF THE SOUTHEAST WING OF WORCESTER HALL,
 HV1447'98.4 FEET WEST OF THE SOUTHWEST CORNER OF THE MILLER D. TYDINGS
 HV1447'BUILDING, 16-1/2 FEET WEST OF THE WEST CURB OF A PARKING AREA BETWEEN
 HV1447'THE BUILDINGS, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1
 HV1447'INCH.  STAMPED COLLEGE 1933.
 HV1447'
 HV1447'RM 6 IS STAMPED COLLEGE NO 6 1933 1969, SET IN THE TOP OF A CONCRETE
 HV1447'WALKWAY ON THE TOP OF THE HILL, 4.5 FEET SOUTHEAST OF THE NORTH
 HV1447'CORNER OF THE TOP STEP OF THE WALKWAY, 27.8 FEET SOUTHEAST OF THE
 HV1447'SOUTHEAST CORNER OF THE EAST WING OF WORCESTER HALL, 109.5 FEET
 HV1447'SOUTHWEST OF THE NORTHWEST CORNER OF MORRILL HALL, 4.7 FEET
 HV1447'SOUTHWEST OF THE SOUTHWEST CORNER OF A PARKING AREA BETWEEN
 HV1447'THE BUILDINGS, AND LEVEL WITH THE WALKWAY.
 HV1447'
 HV1447'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--AT COLLEGE PARK.
 HV1447
 HV1447                          STATION RECOVERY (1971)
 HV1447
 HV1447'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV1447'AT COLLEGE PARK.
 HV1447'AT COLLEGE PARK, AT THE UNIVERSITY OF MARYLAND, ABOUT 2.75 MILES
 HV1447'SOUTHWEST ALONG U.S. HIGHWAY 1 FROM THE INTERSTATE HIGHWAY 495
 HV1447'(CAPITOL BELTWAY) INTERCHANGE, ON THE NORTHWEST SLOPE OF A HILL,
 HV1447'200 FEET NORTHEAST OF THE CENTER LINE OF A ROAD ON THE SOUTH SIDE
 HV1447'OF THE CAMPUS, 54.6 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE
 HV1447'SOUTHEAST WING OF WORCESTER, HALL, 98.4 FEET WEST OF THE
 HV1447'SOUTHWEST CORNER OF THE MILLER D. TYDINGS BUILDINGS, 16 1/2 FEET
 HV1447'WEST OF THE WEST CURB OF A PARKING AREA BETWEEN THE BUILDINGS,
 HV1447'102.8 FEET NORTH-NORTHEAST OF COLLEGE RM 6, AND SET IN THE TOP OF
 HV1447'A CONCRETE POST PROJECTING 1 INCH.
 HV1447
 HV1447                          STATION RECOVERY (1988)
 HV1447
 HV1447'RECOVERY NOTE BY DEWBERRY DAVIS 1988
 HV1447'RECOVERED IN GOOD CONDITION.
 HV1447
 HV1447                          STATION RECOVERY (2002)
 HV1447
 HV1447'RECOVERY NOTE BY DEWBERRY DAVIS 2002 (KEC)
 HV1447'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8024 ***********************************************************************
 AJ8024  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8024  DESIGNATION -  COLLEGE
 AJ8024  PID         -  AJ8024
 AJ8024  STATE/COUNTY-  MD/ANNE ARUNDEL
 AJ8024  COUNTRY     -  US
 AJ8024  USGS QUAD   -  ROUND BAY (2016)
 AJ8024
 AJ8024                         *CURRENT SURVEY CONTROL
 AJ8024  ______________________________________________________________________
 AJ8024* NAD 83(2011) POSITION- 39 03 14.29480(N) 076 30 38.96802(W)   ADJUSTED
 AJ8024* NAD 83(2011) ELLIP HT-   -18.310 (meters)        (06/27/12)   ADJUSTED
 AJ8024* NAD 83(2011) EPOCH   -  2010.00
 AJ8024* NAVD 88 ORTHO HEIGHT -    14.871 (meters)       48.79  (feet) ADJUSTED
 AJ8024  ______________________________________________________________________
 AJ8024  GEOID HEIGHT    -        -33.191 (meters)                     GEOID18
 AJ8024  NAD 83(2011) X  -  1,156,870.585 (meters)                     COMP
 AJ8024  NAD 83(2011) Y  - -4,822,726.431 (meters)                     COMP
 AJ8024  NAD 83(2011) Z  -  3,996,960.073 (meters)                     COMP
 AJ8024  LAPLACE CORR    -         -3.78  (seconds)                    DEFLEC18
 AJ8024  DYNAMIC HEIGHT  -         14.863 (meters)       48.76  (feet) COMP
 AJ8024  MODELED GRAVITY -    980,079.3   (mgal)                       NAVD 88
 AJ8024
 AJ8024  VERT ORDER      -  SECOND    CLASS I
 AJ8024
 AJ8024  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8024  Standards:
 AJ8024         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8024            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8024  -------------------------------------------------------------------
 AJ8024  NETWORK    0.35   0.69           0.16   0.12   0.35      0.02444766
 AJ8024  -------------------------------------------------------------------
 AJ8024  Click here for local accuracies and other accuracy information.
 AJ8024
 AJ8024.The horizontal coordinates were established by GPS observations
 AJ8024.and adjusted by the National Geodetic Survey in June 2012.
 AJ8024
 AJ8024.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8024.been affixed to the stable North American tectonic plate. See 
 AJ8024.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8024
 AJ8024.The horizontal coordinates are valid at the epoch date displayed above
 AJ8024.which is a decimal equivalence of Year/Month/Day.
 AJ8024
 AJ8024.The orthometric height was determined by differential leveling and
 AJ8024.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8024.in December 2003.
 AJ8024
 AJ8024.No vertical observational check was made to the station.
 AJ8024
 AJ8024.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8024.GEOID18 height accuracy estimate available here.
 AJ8024
 AJ8024.Click photographs - Photos may exist for this station.
 AJ8024
 AJ8024.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8024
 AJ8024.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8024
 AJ8024.The ellipsoidal height was determined by GPS observations
 AJ8024.and is referenced to NAD 83.
 AJ8024
 AJ8024.The dynamic height is computed by dividing the NAVD 88
 AJ8024.geopotential number by the normal gravity value computed on the
 AJ8024.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8024.degrees latitude (g = 980.6199 gals.).
 AJ8024
 AJ8024.The modeled gravity was interpolated from observed gravity values.
 AJ8024
 AJ8024. The following values were computed from the NAD 83(2011) position.
 AJ8024
 AJ8024;                    North         East     Units Scale Factor Converg.
 AJ8024;SPC MD       -   154,110.993   442,341.185   MT  0.99995467   +0 18 25.3
 AJ8024;SPC MD       -   505,612.48  1,451,247.70   sFT  0.99995467   +0 18 25.3
 AJ8024;UTM  18      - 4,323,851.893   369,271.350   MT  0.99981043   -0 57 07.3
 AJ8024
 AJ8024!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8024!SPC MD       -   1.00000287  x   0.99995467  =   0.99995754
 AJ8024!UTM  18      -   1.00000287  x   0.99981043  =   0.99981330
 AJ8024
 AJ8024_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6927123851(NAD 83)
 AJ8024
 AJ8024                          SUPERSEDED SURVEY CONTROL
 AJ8024
 AJ8024  NAD 83(2007)-  39 03 14.29502(N)    076 30 38.96877(W) AD(2002.00) 0
 AJ8024  ELLIP H (02/10/07)  -18.288  (m)                       GP(2002.00)    
 AJ8024  NAD 83(1991)-  39 03 14.29504(N)    076 30 38.96887(W) AD(       ) A
 AJ8024  ELLIP H (02/12/02)  -18.285  (m)                       GP(       ) 4 1
 AJ8024  NAVD 88 (02/12/02)   14.9    (m)  GEOID99  model used  GPS OBS        
 AJ8024
 AJ8024.Superseded values are not recommended for survey control.
 AJ8024
 AJ8024.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8024.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8024
 AJ8024_MARKER: DD = SURVEY DISK
 AJ8024_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8024_STAMPING: COLLEGE 1993
 AJ8024_MARK LOGO: MD-003
 AJ8024_PROJECTION: FLUSH
 AJ8024_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8024_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8024+STABILITY: SURFACE MOTION
 AJ8024_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8024+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2016
 AJ8024
 AJ8024  HISTORY     - Date     Condition        Report By
 AJ8024  HISTORY     - 1993     MONUMENTED       MD-003
 AJ8024  HISTORY     - 20000515 GOOD             MDSHA
 AJ8024  HISTORY     - 20010628 GOOD             MDSHA
 AJ8024  HISTORY     - 20120926 GOOD             WOOLPT
 AJ8024  HISTORY     - 20160901 GOOD             JMTMD
 AJ8024  HISTORY     - 20160909 GOOD             JMTMD
 AJ8024
 AJ8024                          STATION DESCRIPTION
 AJ8024
 AJ8024'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8024'THE STATION IS LOCATED ABOUT 5.0 MILES (8.0 KM) NORTHWEST OF
 AJ8024'ANNAPOLIS, 5.0 MILES (8.0 KM) NORTHEAST OF CROWNSVILLE, ON THE GROUNDS
 AJ8024'OF ANNE ARUNDEL COMMUNITY COLLEGE.  TO REACH THE STATION FROM THE
 AJ8024'INTERSECTION OF STATE HIGHWAY 2 AND COLLEGE PARKWAY.  GO EAST ALONG
 AJ8024'COLLEGE PARKWAY FOR 0.6 MILES (1.0 KM) TO THE EXIT RAMP FROM THE
 AJ8024'COMMUNITY COLLEGE TO EASTBOUND COLLEGE PARKWAY AND THE STATION ON THE
 AJ8024'RIGHT.  THE STATION IS AN ANNE ARUNDEL DEPARTMENT OF PUBLIC WORKS DISK
 AJ8024'SET IN CONCRETE.  IT IS LOCATED IN A GRASS AREA BETWEEN A CONCRETE
 AJ8024'SIDEWALK AND THE EASTBOUND LANES OF COLLEGE PARKWAY, 19.01 SOUTHWEST
 AJ8024'OF THE SOUTHWEST CORNER OF A DROP INLET, 46.17 FEET (14.07 M)
 AJ8024'NORTHEAST OF THE NORTHEAST CORNER OF A DROP INLET, 61.62 FEET (18.78
 AJ8024'M) EAST OF POWER POLE NUMBER 485859, 93.65 SOUTH AND ACROSS THE
 AJ8024'PARKWAY FROM POWER POLE NUMBER 485860.
 AJ8024
 AJ8024                          STATION RECOVERY (2001)
 AJ8024
 AJ8024'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ8024'RECOVERED AS DESCRIBED.
 AJ8024
 AJ8024                          STATION RECOVERY (2012)
 AJ8024
 AJ8024'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JS)
 AJ8024'RECOVERED IN GOOD CONDITION.
 AJ8024
 AJ8024                          STATION RECOVERY (2016)
 AJ8024
 AJ8024'RECOVERY NOTE BY JMT ENGINEERING 2016 (EAS)
 AJ8024'GOOD POINT FOR STATIC BASE
 AJ8024
 AJ8024                          STATION RECOVERY (2016)
 AJ8024
 AJ8024'RECOVERY NOTE BY JMT ENGINEERING 2016 (EAS)
 AJ8024'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0281 ***********************************************************************
 JV0281  DESIGNATION -  COLLEGE AZ MK
 JV0281  PID         -  JV0281
 JV0281  STATE/COUNTY-  MD/KENT
 JV0281  COUNTRY     -  US
 JV0281  USGS QUAD   -  CHESTERTOWN (2017)
 JV0281
 JV0281                         *CURRENT SURVEY CONTROL
 JV0281  ______________________________________________________________________
 JV0281* NAD 83(1986) POSITION- 39 12 55.6    (N) 076 04 04.4    (W)   HD_HELD2
 JV0281* NAVD 88 ORTHO HEIGHT -    11.712 (meters)       38.43  (feet) ADJUSTED
 JV0281  ______________________________________________________________________
 JV0281  GEOID HEIGHT    -        -33.435 (meters)                     GEOID18
 JV0281  DYNAMIC HEIGHT  -         11.706 (meters)       38.41  (feet) COMP
 JV0281  MODELED GRAVITY -    980,108.3   (mgal)                       NAVD 88
 JV0281
 JV0281  VERT ORDER      -  FIRST     CLASS II
 JV0281
 JV0281.The horizontal coordinates were established by autonomous hand held GPS
 JV0281.observations and have an estimated accuracy of +/- 10 meters.
 JV0281
 JV0281.The orthometric height was determined by differential leveling and
 JV0281.adjusted by the NATIONAL GEODETIC SURVEY
 JV0281.in July 2019.
 JV0281
 JV0281.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0281.GEOID18 height accuracy estimate available here.
 JV0281
 JV0281.Click photographs - Photos may exist for this station.
 JV0281
 JV0281.The dynamic height is computed by dividing the NAVD 88
 JV0281.geopotential number by the normal gravity value computed on the
 JV0281.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0281.degrees latitude (g = 980.6199 gals.).
 JV0281
 JV0281.The modeled gravity was interpolated from observed gravity values.
 JV0281
 JV0281;                    North         East    Units  Estimated Accuracy
 JV0281;SPC MD       -   172,334.      480,496.      MT  (+/- 10 meters HH2 GPS)
 JV0281
 JV0281_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0780941228(NAD 83)
 JV0281
 JV0281                          SUPERSEDED SURVEY CONTROL
 JV0281
 JV0281  NAVD 88 (06/15/91)   11.703  (m)           38.40   (f) SUPERSEDED  1 2
 JV0281  NGVD 29 (11/26/84)   11.944  (m)           39.19   (f) ADJUSTED    1 2
 JV0281
 JV0281.Superseded values are not recommended for survey control.
 JV0281
 JV0281.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0281.See file dsdata.pdf to determine how the superseded data were derived.
 JV0281
 JV0281_MARKER: DR = REFERENCE MARK DISK
 JV0281_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0281_STAMPING: COLLEGE AZ MARK 1934
 JV0281_MARK LOGO: CGS
 JV0281_PROJECTION: FLUSH
 JV0281_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0281+STABILITY: SURFACE MOTION
 JV0281_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0281+SATELLITE: SATELLITE OBSERVATIONS - January 17, 2014
 JV0281
 JV0281  HISTORY     - Date     Condition        Report By
 JV0281  HISTORY     - 1934     MONUMENTED       CGS
 JV0281  HISTORY     - 1971     GOOD             NGS
 JV0281  HISTORY     - 19901128 GOOD             USPSQD
 JV0281  HISTORY     - 19910117 GOOD             NGS
 JV0281  HISTORY     - 20011229 GOOD             USPSQD
 JV0281  HISTORY     - 20120521 GOOD             MDSHA
 JV0281  HISTORY     - 20140117 GOOD             ARCSHE
 JV0281
 JV0281                          STATION DESCRIPTION
 JV0281
 JV0281'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0281'AT CHESTERTOWN.
 JV0281'AT CHESTERTOWN, ABOUT 0.65 MILE NORTH ALONG U.S. HIGHWAY 213 FROM
 JV0281'THE NORTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESTER RIVER,
 JV0281'THENCE 0.1 MILE WEST ALONG CAMPUS AVENUE, 0.1 MILE EAST ALONG
 JV0281'CAMPUS AVENUE FROM THE JUNCTION OF COLLEGE AVENUE, ACROSS CAMPUS
 JV0281'AVENUE FROM THE SCIENCE BUILDING OF WASHINGTON COLLEGE, BETWEEN
 JV0281'THE SOUTH CURB OF THE AVENUE AND A SIDEWALK, 118 FEET EAST OF THE
 JV0281'CENTER LINE OF A STREET LEADING SOUTH, 20.4 FEET NORTHWEST OF
 JV0281'THE NORTHWEST CORNER OF A BRICK PILLAR, 1.7 FEET NORTH OF THE
 JV0281'NORTH EDGE OF A SIDEWALK, 1.2 FEET SOUTH OF THE SOUTH CURB OF
 JV0281'CAMPUS AVENUE, 426 FEET SOUTHWEST OF BENCH MARK L 114 DESCRIBED,
 JV0281'ABOUT LEVEL WITH THE SIDEWALK AND SET IN THE TOP OF A CONCRETE
 JV0281'POST FLUSH WITH THE GROUND.
 JV0281
 JV0281                          STATION RECOVERY (1990)
 JV0281
 JV0281'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0281'RECOVERED IN GOOD CONDITION.
 JV0281
 JV0281                          STATION RECOVERY (1991)
 JV0281
 JV0281'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV0281'RECOVERED IN GOOD CONDITION.
 JV0281
 JV0281                          STATION RECOVERY (2001)
 JV0281
 JV0281'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0281'RECOVERED IN GOOD CONDITION.
 JV0281
 JV0281                          STATION RECOVERY (2012)
 JV0281
 JV0281'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2012 (WAC)
 JV0281'RECOVERED AS DESCRIBED.
 JV0281
 JV0281                          STATION RECOVERY (2014)
 JV0281
 JV0281'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0281'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7747 ***********************************************************************
 HV7747  DESIGNATION -  COLLEGE PARK UNIV METH CHURCH
 HV7747  PID         -  HV7747
 HV7747  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7747  COUNTRY     -  US
 HV7747  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7747
 HV7747                         *CURRENT SURVEY CONTROL
 HV7747  ______________________________________________________________________
 HV7747* NAD 83(1991) POSITION- 38 59 03.72934(N) 076 57 05.05418(W)   ADJUSTED
 HV7747  ______________________________________________________________________
 HV7747  GEOID HEIGHT    -        -32.100 (meters)                     GEOID18
 HV7747  LAPLACE CORR    -         -3.72  (seconds)                    DEFLEC18
 HV7747  HORZ ORDER      -  THIRD
 HV7747
 HV7747.The horizontal coordinates were established by classical geodetic methods
 HV7747.and adjusted by the National Geodetic Survey in January 1992.
 HV7747
 HV7747.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7747.GEOID18 height accuracy estimate available here.
 HV7747
 HV7747.Click photographs - Photos may exist for this station.
 HV7747
 HV7747.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7747
 HV7747. The following values were computed from the NAD 83(1991) position.
 HV7747
 HV7747;                    North         East     Units Scale Factor Converg.
 HV7747;SPC MD       -   146,272.160   404,210.424   MT  0.99995164   +0 01 49.8
 HV7747;SPC MD       -   479,894.58  1,326,147.03   sFT  0.99995164   +0 01 49.8
 HV7747;UTM  18      - 4,316,853.159   330,980.453   MT  0.99995178   -1 13 40.6
 HV7747
 HV7747_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3098016853(NAD 83)
 HV7747
 HV7747                          SUPERSEDED SURVEY CONTROL
 HV7747
 HV7747  NAD 83(1986)-  38 59 03.72842(N)    076 57 05.06517(W) AD(       ) 3
 HV7747  NAD 27      -  38 59 03.33171(N)    076 57 06.15593(W) AD(       ) 3
 HV7747
 HV7747.Superseded values are not recommended for survey control.
 HV7747
 HV7747.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7747.See file dsdata.pdf to determine how the superseded data were derived.
 HV7747
 HV7747_MARKER: 90 = CHURCH SPIRE
 HV7747
 HV7747  HISTORY     - Date     Condition        Report By
 HV7747  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7747  HISTORY     - 20031113 GOOD             GEOCAC
 HV7747
 HV7747                          STATION DESCRIPTION
 HV7747
 HV7747'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7747'THE STATION IS THE CENTER OF THE TOP OF THE COLLEGE PARK
 HV7747'UNIVERSITY METHODIST CHURCH SPIRE, LOCATED 0.3 MILE NORTH OF THE
 HV7747'INTERSECTION OF CAMPUS DRIVE AND ADELPHI ROAD ON THE CAMPUS OF
 HV7747'THE UNIVERSITY OF MARYLAND.  IT IS ABOUT 110 FEET ABOVE THE
 HV7747'GROUND.
 HV7747
 HV7747                          STATION RECOVERY (2003)
 HV7747
 HV7747'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV7747'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7745 ***********************************************************************
 HV7745  DESIGNATION -  COLLEGE PARK UNIV OF MD CHAPEL
 HV7745  PID         -  HV7745
 HV7745  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7745  COUNTRY     -  US
 HV7745  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7745
 HV7745                         *CURRENT SURVEY CONTROL
 HV7745  ______________________________________________________________________
 HV7745* NAD 83(1991) POSITION- 38 59 02.96764(N) 076 56 26.06288(W)   ADJUSTED
 HV7745  ______________________________________________________________________
 HV7745  GEOID HEIGHT    -        -32.124 (meters)                     GEOID18
 HV7745  LAPLACE CORR    -         -4.36  (seconds)                    DEFLEC18
 HV7745  HORZ ORDER      -  THIRD
 HV7745
 HV7745.The horizontal coordinates were established by classical geodetic methods
 HV7745.and adjusted by the National Geodetic Survey in January 1992.
 HV7745
 HV7745.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7745.GEOID18 height accuracy estimate available here.
 HV7745
 HV7745.Click photographs - Photos may exist for this station.
 HV7745
 HV7745.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7745
 HV7745. The following values were computed from the NAD 83(1991) position.
 HV7745
 HV7745;                    North         East     Units Scale Factor Converg.
 HV7745;SPC MD       -   146,249.228   405,148.844   MT  0.99995163   +0 02 14.3
 HV7745;SPC MD       -   479,819.34  1,329,225.83   sFT  0.99995163   +0 02 14.3
 HV7745;UTM  18      - 4,316,809.622   331,918.141   MT  0.99994788   -1 13 16.0
 HV7745
 HV7745_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3191816809(NAD 83)
 HV7745
 HV7745                          SUPERSEDED SURVEY CONTROL
 HV7745
 HV7745  NAD 83(1986)-  38 59 02.96663(N)    076 56 26.07373(W) AD(       ) 3
 HV7745  NAD 27      -  38 59 02.57012(N)    076 56 27.16404(W) AD(       ) 3
 HV7745
 HV7745.Superseded values are not recommended for survey control.
 HV7745
 HV7745.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7745.See file dsdata.pdf to determine how the superseded data were derived.
 HV7745
 HV7745_MARKER: 90 = CHURCH SPIRE
 HV7745
 HV7745  HISTORY     - Date     Condition        Report By
 HV7745  HISTORY     - 1958     FIRST OBSERVED   CGS
 HV7745  HISTORY     - 1970     GOOD             NGS
 HV7745  HISTORY     - 20031113 GOOD             GEOCAC
 HV7745
 HV7745                          STATION DESCRIPTION
 HV7745
 HV7745'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7745'STATION IS ON THE CAMPUS OF THE UNIVERSITY OF MARYLAND AND IS
 HV7745'THE HIGHEST BUILDING ON THE CAMPUS.  THE FRONT OF THE CHAPEL
 HV7745'OVERLOOKS U.S. HIGHWAY 1 TO THE EAST AND IS ABOUT 400 YARDS EAST
 HV7745'OF THE HIGHWAY.  THE RED WARNING LIGHT ON THE TOP OF THE SPIRE WAS
 HV7745'THE POINT INTERSECTED.
 HV7745
 HV7745                          STATION RECOVERY (1970)
 HV7745
 HV7745'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7745'THE STATION IS THE RED LIGHT MOUNTED AT THE TOP OF THE COLLEGE
 HV7745'PARK UNIVERSITY OF MARYLAND CHAPEL SPIRE, LOCATED AT CHAPEL DRIVE
 HV7745'AND REGENTS DRIVE ON THE CAMPUS OF THE UNIVERSITY OF MARYLAND.  IT
 HV7745'IS ABOUT 155 FEET ABOVE THE GROUND.
 HV7745
 HV7745                          STATION RECOVERY (2003)
 HV7745
 HV7745'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV7745'CHAPEL AND SPIRE OBSERVED, BUT RED LIGHT WAS NOT READILY VISIBLE TO
 HV7745'NAKED EYE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3604 ***********************************************************************
 JV3604  DESIGNATION -  COLLEGE RESET
 JV3604  PID         -  JV3604
 JV3604  STATE/COUNTY-  MD/KENT
 JV3604  COUNTRY     -  US
 JV3604  USGS QUAD   -  CHESTERTOWN (2017)
 JV3604
 JV3604                         *CURRENT SURVEY CONTROL
 JV3604  ______________________________________________________________________
 JV3604* NAD 83(1991) POSITION- 39 13 06.14355(N) 076 04 06.68925(W)   ADJUSTED
 JV3604* NAVD 88 ORTHO HEIGHT -    22.839 (meters)       74.93  (feet) ADJUSTED
 JV3604  ______________________________________________________________________
 JV3604  GEOID HEIGHT    -        -33.430 (meters)                     GEOID18
 JV3604  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 JV3604  DYNAMIC HEIGHT  -         22.827 (meters)       74.89  (feet) COMP
 JV3604  MODELED GRAVITY -    980,108.4   (mgal)                       NAVD 88
 JV3604
 JV3604  HORZ ORDER      -  SECOND
 JV3604  VERT ORDER      -  FIRST     CLASS II
 JV3604
 JV3604.The horizontal coordinates were established by classical geodetic methods
 JV3604.and adjusted by the National Geodetic Survey in January 1992.
 JV3604
 JV3604.The orthometric height was determined by differential leveling and
 JV3604.adjusted by the NATIONAL GEODETIC SURVEY
 JV3604.in January 2023.
 JV3604
 JV3604.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3604.GEOID18 height accuracy estimate available here.
 JV3604
 JV3604.Click photographs - Photos may exist for this station.
 JV3604
 JV3604.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3604
 JV3604.The dynamic height is computed by dividing the NAVD 88
 JV3604.geopotential number by the normal gravity value computed on the
 JV3604.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3604.degrees latitude (g = 980.6199 gals.).
 JV3604
 JV3604.The modeled gravity was interpolated from observed gravity values.
 JV3604
 JV3604. The following values were computed from the NAD 83(1991) position.
 JV3604
 JV3604;                    North         East     Units Scale Factor Converg.
 JV3604;SPC MD       -   172,658.852   480,437.735   MT  0.99996768   +0 35 04.7
 JV3604;SPC MD       -   566,464.92  1,576,236.14   sFT  0.99996768   +0 35 04.7
 JV3604;UTM  18      - 4,341,554.016   407,758.563   MT  0.99970476   -0 40 32.3
 JV3604
 JV3604!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3604!SPC MD       -   1.00000166  x   0.99996768  =   0.99996934
 JV3604!UTM  18      -   1.00000166  x   0.99970476  =   0.99970642
 JV3604
 JV3604:                Primary Azimuth Mark                     Grid Az
 JV3604:SPC MD       -  COLLEGE AZ MK                            170 08 34.9
 JV3604:UTM  18      -  COLLEGE AZ MK                            171 24 11.9
 JV3604
 JV3604_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0775841554(NAD 83)
 JV3604
 JV3604|---------------------------------------------------------------------|
 JV3604| PID    Reference Object                     Distance      Geod. Az  |
 JV3604|                                                           dddmmss.s |
 JV3604| JV0278 COLLEGE RM 3                         16.599 METERS 00511     |
 JV3604| JV4998 COLLEGE RM 1                         44.053 METERS 02847     |
 JV3604| CB1105 COLLEGE RM 5                         10.564 METERS 14850     |
 JV3604| JV0281 COLLEGE AZ MK                                      1704339.6 |
 JV3604| JV0276 COLLEGE RM 4                         17.950 METERS 25040     |
 JV3604| CB1104 COLLEGE RM 2                         40.115 METERS 32037     |
 JV3604| JV4992 CHESTERTOWN MUNICIPAL TK             22.229 METERS 34803     |
 JV3604|---------------------------------------------------------------------|
 JV3604
 JV3604                          SUPERSEDED SURVEY CONTROL
 JV3604
 JV3604  NAD 83(1986)-  39 13 06.13579(N)    076 04 06.69877(W) AD(       ) 2
 JV3604  NAD 27      -  39 13 05.74400(N)    076 04 07.89400(W) AD(       ) 2
 JV3604  NAVD 88 (06/15/91)   22.831  (m)           74.90   (f) SUPERSEDED  1 2
 JV3604  NGVD 29              23.07   (m)           75.7    (f) LEVELING    3  
 JV3604  NGVD 29 (11/26/84)   23.072  (m)           75.70   (f) ADJUSTED    1 2
 JV3604
 JV3604.Superseded values are not recommended for survey control.
 JV3604
 JV3604.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3604.See file dsdata.pdf to determine how the superseded data were derived.
 JV3604
 JV3604_MARKER: DS = TRIANGULATION STATION DISK
 JV3604_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3604_STAMPING: COLLEGE 1934 1964
 JV3604_MARK LOGO: CGS
 JV3604_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3604+STABILITY: SURFACE MOTION
 JV3604
 JV3604  HISTORY     - Date     Condition        Report By
 JV3604  HISTORY     - 1934     MONUMENTED       CGS
 JV3604  HISTORY     - 1938     GOOD             CGS
 JV3604  HISTORY     - 1954     GOOD             CGS
 JV3604  HISTORY     - 1964     GOOD             CGS
 JV3604  HISTORY     - 1971     GOOD             NGS
 JV3604  HISTORY     - 1971     GOOD             NGS
 JV3604  HISTORY     - 1974     GOOD             NGS
 JV3604  HISTORY     - 20011229 MARK NOT FOUND   USPSQD
 JV3604
 JV3604                          STATION DESCRIPTION
 JV3604
 JV3604'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 JV3604'STATION IS LOCATED ON THE CAMPUS OF WASHINGTON COLLEGE, CHESTERTOWN,
 JV3604'MARYLAND, IN NW CORNER OF CAMPUS, 72.92 FEET SE OF THE CENTER OF
 JV3604'LEAD PIPE OF THE MUNICIPAL WATER TANK, 54 FEET S OF SE LEG OF
 JV3604'TANK, 61 FEET SE OF SW LEG OF TANK, 52 FEET W OF THE NW CORNER OF
 JV3604'TENNIS COURT.
 JV3604'
 JV3604'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV3604'BRONZE DISKS SET IN CONCRETE.
 JV3604'
 JV3604'REFERENCE MARK NO.1 IS 144.53 FEET ENE OF STATION, 1 FOOT S OF
 JV3604'FENCE AND PROJECTS 6 INCHES ABOVE THE GROUND.
 JV3604'
 JV3604'REFERENCE MARK NO.2 IS 131.61 FEET NNW OF STATION, 2 FEET S OF
 JV3604'TELEPHONE POLE, 6 PACES W OF THE CENTER LINE OF ROAD.  IT PROJECTS
 JV3604'5 INCHES ABOVE THE GROUND.
 JV3604'
 JV3604'AZIMUTH MARK IS 0.3 MILE S OF STATION, 5 PACES S OF THE CENTER LINE
 JV3604'OF CAMPUS AVENUE, 1 FOOT S OF CURB, 44 PACES E OF CENTER LINE OF
 JV3604'KENT CIRCLE.
 JV3604'
 JV3604'TO REACH FROM W END OF CHESTERTOWN BRIDGE, GO NORTHERLY ALONG
 JV3604'U.S. HIGHWAY 213, 0.7 MILE TO MAIN ROAD ENTRANCE TO WASHINGTON
 JV3604'COLLEGE ON LEFT (WHITE SIGN--WASHINGTON COLLEGE FOUNDED 1782).  GO
 JV3604'ALONG THE CINDER DRIVE 0.1 MILE TO TENNIS COURT AND STATION.
 JV3604'
 JV3604'HEIGHT OF LAMPS ABOVE STATION MARK 30 METERS.
 JV3604
 JV3604                          STATION RECOVERY (1938)
 JV3604
 JV3604'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV3604'STATION WAS FOUND IN GOOD CONDITION.
 JV3604'
 JV3604'ORIGINAL DESCRIPTION ADEQUATE EXCEPT THAT BLACK MUNICIPAL WATER
 JV3604'TANK AS MENTIONED IN THE ORIGINAL DESCRIPTION IS NOW PAINTED
 JV3604'ALUMINUM.  THE AZIMUTH MARK IS 36 PACES INSTEAD OF 44 PACES, AS
 JV3604'GIVEN IN ORIGINAL DESCRIPTION, E OF CENTER KENT CIRCLE.
 JV3604
 JV3604                          STATION RECOVERY (1954)
 JV3604
 JV3604'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (IWS)
 JV3604'STATION WAS RECOVERED AS DESCRIBED WITH THE EXCEPTION OF REFERENCE
 JV3604'MARK 2.  THE TELEPHONE POLE, MENTIONED IN THE DESCRIPTION, IS NO
 JV3604'LONGER THERE.  THE DISTANCE TO THE STATION MARK WAS FOUND TO BE
 JV3604'130.64 FT. INSTEAD OF 131.61 FT.
 JV3604'
 JV3604'DUE TO CONSTRUCTION IN THE AREA, IT WAS NECESSARY TO DESTROY THE
 JV3604'STATION MARK.  A NUMBER 2 STATION WAS NOT ESTABLISHED BECAUSE THE
 JV3604'AZIMUTH MARK IS NOT NOW VISIBLE.  NO DISTANT INTERSECTION STATIONS
 JV3604'ARE VISIBLE FROM THIS STATION.
 JV3604'
 JV3604'REFERENCE MARK 2 AND THE MUNICIPAL WATER TANK WILL SERVE AS
 JV3604'REFERENCES FOR THE NEW STATION, COLLEGE R.M. NO.1.
 JV3604
 JV3604                          STATION RECOVERY (1964)
 JV3604
 JV3604'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (CFO)
 JV3604'THE STATION SURFACE MARK HAS BEEN DESTROYED, THE SUB-SURFACE MARK
 JV3604'WAS RECOVERED IN GOOD CONDITION.
 JV3604'
 JV3604'REFERENCE MARK NO.1 WAS RECOVERED AND FOUND TO BE IN GOOD
 JV3604'CONDITION.
 JV3604'
 JV3604'REFERENCE MARK NO.2 WAS NOT RECOVERED, PROBABLY HAS BEEN DESTROYED
 JV3604'BY THE ROAD MADE TO A PARKING LOT.
 JV3604'
 JV3604'AZIMUTH MARK WAS RECOVERED AND FOUND TO BE IN GOOD CONDITION.
 JV3604'
 JV3604'A NEW DESCRIPTION FOLLOWS--
 JV3604'
 JV3604'THE STATION IS LOCATED IN CHESTERTOWN, ON CAMPUS OF WASHINGTON
 JV3604'COLLEGE, ON NORTHWEST SIDE OF THE CAMPUS, IN A SMALL PARKING AREA
 JV3604'SOUTH OF THE CITY MINICIPAL WATER TOWER.  72.92 FEET SOUTH OF THE
 JV3604'CENTER OF THE FEED PIPE, 37.7 FEET NORTHWEST OF NORTHWEST CORNER
 JV3604'OF HODSON HALL, 51.5 FEET NORTHWEST OF NORTHEAST CORNER OF HODSON
 JV3604'HALL.  A STATION MARK DISK IN THE TOP OF A 14-INCH SQUARE
 JV3604'CONCRETE MONUMENT, FLUSH WITH THE MACADAM, STAMPED, COLLEGE 1934
 JV3604'1964.
 JV3604'
 JV3604'REFERENCE MARK NO.1 IS 16.8 FEET SOUTHWEST OF NORTHEAST CORNER OF
 JV3604'SOMERSET HALL, 77.2 FEET EAST OF NORTHEAST LEG OF WATER TOWER, AND
 JV3604'ON EDGE OF A LONG CONCRETE WALL.  A DISK IN THE TOP OF A CONCRETE
 JV3604'MONUMENT, PROJECTING 6 INCHES, STAMPED, COLLEGE NO 1 1934.
 JV3604'THIS MARK MAY BE DESTROYED WHEN CONSTRUCTION IS COMPLETE IN THE
 JV3604'AREA, THEIR PLANS WERE NOT CERTAIN AT THIS DATE.
 JV3604'
 JV3604'REFERENCE MARK NO. 3 IS IN THE 2 FOOT SQUARE CONCRETE FOOTING OF
 JV3604'THE SOUTHWEST LEG OF THE WATER TOWER.  A STANDARD DISK, STAMPED,
 JV3604'COLLEGE NO 3 1964.
 JV3604'
 JV3604'REFERENCE MARK NO. 4 74 FEET SOUTH OF THE SOUTHWEST LEG OF THE
 JV3604'WATER TOWER, 67.8 FEET NORTHEAST OF NORTHWEST CORNER OF HODSON
 JV3604'HALL, AND IN LINE WITH THE ROW OF TREES.  A STANDARD DISK IN
 JV3604'12-INCH SQUARE CONCRETE MONUMENT, FLUSH WITH THE GROUND, STAMPED,
 JV3604'COLLEGE NO 4 1964
 JV3604'
 JV3604'AZIMUTH MARK IS 0.25 MILE SOUTH OF STATION, ON CAMPUS AVENUE,
 JV3604'ACROSS THE ROAD FROM THE COLLEGE SCIENCE BUILDING, BETWEEN THE CURB
 JV3604'AND SIDEWALK, 18 FEET SOUTH OF CENTERLINE OF THE STREET AND 20.5
 JV3604'FEET NORTHWEST OF NORTH WEST CORNER OF THE BRICK PILLAR AT
 JV3604'ENTRANCE TO A RESIDENCE.  A REFERENCE MARK DISK, FLUSH WITH THE
 JV3604'GROUND, STAMPED COLLEGE AZ MARK 1934.  NOTE--THIS MARK WILL NOT
 JV3604'SEE THE STATION, DUE TO THE NEW BUILDINGS ON THE COLLEGE
 JV3604'CAMPUS.
 JV3604
 JV3604                          STATION RECOVERY (1971)
 JV3604
 JV3604'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 JV3604'THE STATION MARK, RMS 3 AND 4 AND THE AZIMUTH MARK WERE ALL
 JV3604'RECOVERED IN GOOD CONDITION.  RM 1 WAS RECOVERED BUT IS LIKELY TO
 JV3604'BE DESTROYED.
 JV3604'
 JV3604'TO REACH THE STATION MARK FROM THE NORTHWEST END OF THE
 JV3604'U.S. HIGHWAY 213 BRIDGE OVER THE CHESTER RIVER AT CHESTERTOWN, GO
 JV3604'ABOUT 0.95 MILE NORTH ALONG THE HIGHWAY, THENCE 0.15 MILE SOUTH
 JV3604'ALONG COLLEGE AVENUE, NEAR THE NORTHWEST SIDE OF THE WASHINGTON
 JV3604'COLLEGE CAMPUS, NEAR THE CITY WATER TOWER, 100 FEET EAST OF THE
 JV3604'CENTER LINE OF THE AVENUE, 92.9 FEET SOUTH OF THE CENTER OF THE
 JV3604'FEED PIPE FOR THE WATER TOWER, 37.7 FEET NORTHWEST OF THE
 JV3604'NORTHWEST CORNER OF HUDSON HALL, ABOUT 7 FEET ABOVE THE LEVEL OF
 JV3604'THE AVENUE, AND SET IN THE TOP OF A CONCRETE POST THAT IS LEVEL
 JV3604'WITH THE AVENUE, AND SET IN THE TOP OF A CONCRETE POST THAT IS
 JV3604'LEVEL WITH THE PAVED PARKING AREA IN WHICH THE MARK IS SET.
 JV3604'STAMPED COLLEGE 1934 1964.
 JV3604'
 JV3604'RM 1 WAS NOT LEVELED TO BY THIS PARTY IN 1971.  (TO BE DESTROYED)
 JV3604'
 JV3604'RM 3 IS 54.4 FEET NORTH OF THE STATION MARK, 95.3 FEET NORTHEAST OF
 JV3604'RM 4, SET IN THE TOP OF THE SOUTHWEST CORNER OF THE CONCRETE
 JV3604'FOUNDATION FOR THE SOUTHEAST LEG OF THE WATER TOWER, 88 FEET EAST
 JV3604'OF THE CENTER LINE OF THE AVENUE, AND ABOUT 7 FEET ABOVE THE LEVEL
 JV3604'OF THE AVENUE.
 JV3604'
 JV3604'RM 4 IS 58.9 FEET SOUTHWEST OF THE STATION MARK, 45 FEET EAST OF
 JV3604'THE CENTER LINE OF THE AVENUE, 70.6 FEET SOUTH OF THE SOUTHWEST
 JV3604'CORNER OF THE CONCRETE FOUNDATION FOR THE SOUTHWEST LEG OF THE
 JV3604'WATER TOWER, 67.8 FEET SOUTH OF THE NORTHWEST CORNER OF HUDSON
 JV3604'HALL, ABOUT 7 FEET ABOVE THE LEVEL OF THE AVENUE, AND SET IN THE
 JV3604'TOP OF A CONCRETE POST LEVEL WITH THE GROUND.
 JV3604'
 JV3604'THE AZIMUTH MARK IS 0.25 MILE SOUTH OF THE STATION MARK, 0.1 MILE
 JV3604'WEST OF THE JUNCTION OF U.S. HIGHWAY 213 AND CAMPUS AVENUES, 0.1
 JV3604'MILE EAST OF THE JUNCTION OF CAMPUS AVENUE AND COLLEGE AVENUE,
 JV3604'ACROSS CAMPUS AVENUE FROM THE SCIENCE BUILDING AT WASHINGTON
 JV3604'COLLEGE, BETWEEN THE SOUTH CURB OF THE AVENUE AND A SIDEWALK, 118
 JV3604'FEET EAST OF THE CENTER LINE OF A STREET THAT LEADS SOUTH, 20.4
 JV3604'FEET NORTHWEST OF THE NORTHWEST CORNER OF A BRICK PILLAR, 1.7
 JV3604'FEET NORTH OF THE NORTH EDGE OF A SIDEWALK, 1.2 FEET SOUTH OF THE
 JV3604'SOUTH CURB OF CAMPUS AVENUE, 426.0 FEET SOUTHWEST OF BENCH MARK L
 JV3604'114, ABOUT LEVEL WITH THE SIDEWALK, AND SET IN THE TOP OF A
 JV3604'CONCRETE POST THAT IS LEVEL WITH THE GROUND.
 JV3604'
 JV3604'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV3604'1.1 MILES NORTH.
 JV3604
 JV3604                          STATION RECOVERY (1971)
 JV3604
 JV3604'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV3604'1.1 MI N FROM CHESTERTOWN.
 JV3604'ABOUT 0.95 MILE NORTH ALONG US HIGHWAY 213 FROM THE NORTHWEST END
 JV3604'OF THE HIGHWAY BRIDGE OVER THE CHESTER RIVER AT CHESTERTOWN, THENCE
 JV3604'0.15 MILE SOUTH ALONG COLLEGE AVENUE, NEAR THE NORTHWEST SIDE OF THE
 JV3604'WASHINGTON COLLEGE CAMPUS, NEAR THE CITY WATER TOWER, IN A PARKING
 JV3604'LOT SOUTH OF THE WATER TOWER, 100 FEET EAST OF THE CENTERLINE OF
 JV3604'COLLEGE AVENUE, 92.9 FEET SOUTH OF THE CENTER OF THE FEED PIPE OF THE
 JV3604'WATER TOWER, 37.7 FEET NORTHWEST OF THE NORTHWEST CORNER OF HUDSON
 JV3604'HALL, 54.4 FEET SOUTH OF RM 3, 58.9 FEET NORTHEAST OF RM 4, 144.5
 JV3604'FEET SOUTHWEST OF RM 1, 7 FEET ABOVE THE LEVEL OF THE AVENUE AND
 JV3604'SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE BLACKTOP.
 JV3604
 JV3604                          STATION RECOVERY (1974)
 JV3604
 JV3604'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV3604'THE STATION MARK WAS RECOVERED AS DESCRIBED IN THE 1964
 JV3604'DESCRIPTION.  REFERENCE MARK 1 AND 3 WERE RECOVERED AND FOUND IN
 JV3604'GOOD CONDITION.  REFERENCE MARK 1 IS TO BE DESTROYED BEFORE SUMMER
 JV3604'OF 1974.  REFERENCE MARK 4 WAS FOUND DESTROYED.  THE DISK WAS
 JV3604'FOUND BESIDE THE CONCRETE MONUMENT AND THE GROUNDS CARETAKER FOR
 JV3604'THE WASHINGTON COLLEGE STATED THAT IT WAS POSSIBLE THAT THE
 JV3604'DISK WAS SCRAPED OFF OF THE MONUMENT DURING WORK ON THE GROUND
 JV3604'AROUND THE MONUMENT.  THE MONUMENT IS STILL INTACT AND THE DISK
 JV3604'STEM VISIBLE.  A NEW REFERENCE MARK 5 WAS ESTABLISHED AT
 JV3604'THIS DATE.  A LONGER DISTANCE OF 0.02 FOOT WAS NOTED TO
 JV3604'REFERENCE MARK 3.  THE DIRECTION BETWEEN REFERENCE MARKS 1 AND
 JV3604'3 WERE WITHIN CLOSE AGREEMENT WITH THE 1964 OBSERVATIONS.
 JV3604'THE AZIMUTH MARK IS NO LONGER VISIBLE FROM THE GROUND AS
 JV3604'STATED IN THE 1964 DESCRIPTION.
 JV3604'
 JV3604'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV3604'
 JV3604'THE STATION IS LOCATED IN THE NORTHERN PART OF CHESTERTOWN, ON THE
 JV3604'CAMPUS OF THE WASHINGTON COLLEGE, IN A SMALL PARKING AREA AND JUST
 JV3604'SOUTH OF THE CHESTERTOWN MUNICIPAL WATER TANK.  IT IS JUST
 JV3604'NORTHWEST OF THE HODSON HALL BUILDING.  THE PROPERTY IS OWNED BY
 JV3604'THE WASHINGTON COLLEGE.
 JV3604'
 JV3604'THE LOCATION OF THIS STATION IS ADEQUATE TO FIND IT WITH.
 JV3604'
 JV3604'THE STATION MARK IS A STANDARD DISK STAMPED COLLEGE 1934 1964, SET
 JV3604'IN THE TOP OF A 14-INCH SQUARE CONCRETE MONUMENT WHICH IS 4 INCHES
 JV3604'BELOW THE MACADAM PARKING LOT.  IT IS 13.5 FEET EAST OF THE CURB
 JV3604'ON THE WEST SIDE OF THE PARKING AREA, 37.6 FEET NORTH OF THE
 JV3604'NORTHWEST CORNER OF THE HODSON HALL BUILDING, 42.3 FEET WEST OF A
 JV3604'POWERLINE POLE NUMBERED 48A, 55 FEET SOUTHWEST OF THE SOUTHEAST
 JV3604'LEG OF THE WATER TANK AND 95 FEET EAST OF THE CENTER OF COLLEGE
 JV3604'AVENUE.
 JV3604'
 JV3604'REFERENCE MARK 1 IS A STANDARD DISK STAMPED COLLEGE 1934 NO 1,
 JV3604'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV3604'1 FOOT.  IT IS 77 FEET EAST OF THE NORTHEAST LEG OF THE WATER TANK
 JV3604'AND 17 FEET SOUTHWEST OF THE NORTHWEST CORNER OF A BRICK
 JV3604'BUILDING.
 JV3604'
 JV3604'REFERENCE MARK 3 IS A STANDARD DISK STAMPED COLLEGE NO 3 1964,
 JV3604'CEMENTED IN A DRILL HOLE IN THE 2 FOOT SQUARE CONCRETE FOUNDATION
 JV3604'FOR THE SOUTHEAST LEG OF THE WATER TANK.  IT IS 2 FEET SOUTH OF THE
 JV3604'METAL LEG OF THE WATER TANK, 10.5 FEET NORTH OF THE NORTH CURB OF
 JV3604'THE PARKING AREA AND 55.2 FEET NORTHWEST OF THE POWERLINE POLE
 JV3604'NUMBERED 48A.
 JV3604'
 JV3604'REFERENCE MARK 5 IS A STANDARD DISK STAMPED COLLEGE 1934 NO 5
 JV3604'1974, CEMENTED IN A DRILL HOLE IN THE BOTTOM STEP TO THE
 JV3604'NORTHEAST ENTRANCE TO THE HODSON HALL.  IT IS 47 FEET SOUTHWEST OF
 JV3604'THE POWERLINE POLE NUMBERED 48A, 20 FEET SOUTH OF THE PARKING AREA
 JV3604'AND 10.1 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE HODSON
 JV3604'BUILDING.
 JV3604'
 JV3604'THE AZIMUTH MARK IS A STANDARD DISK STAMPED COLLEGE 1934
 JV3604'AZ MARK, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH
 JV3604'IS FLUSH WITH THE SURFACE.  IT IS 125 FEET EAST OF THE CENTER OF
 JV3604'KENT CIRCLE, 20 FEET SOUTH OF THE CENTER OF CAMPUS AVENUE AND 1
 JV3604'FOOT SOUTH OF THE CURB ON THE SOUTH SIDE OF CAMPUS AVENUE.
 JV3604'
 JV3604'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTHERLY ON
 JV3604'COLLEGE AVENUE FOR 0.25 MILE TO A SIDE STREET LEFT.  TURN LEFT AND
 JV3604'GO EASTERLY ON CAMPUS AVENUE FOR 0.15 MILE TO KENT CIRCLE ON THE
 JV3604'RIGHT AND THE AZIMUTH MARK JUST SOUTHEAST OF THE T-INTERSECTION OF
 JV3604'THE TWO STREETS.
 JV3604'
 JV3604'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV3604'IN NORTH EDGE OF CHESTERTOWN.
 JV3604
 JV3604                          STATION RECOVERY (2001)
 JV3604
 JV3604'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV3604'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4998 ***********************************************************************
 JV4998  DESIGNATION -  COLLEGE RM 1
 JV4998  PID         -  JV4998
 JV4998  STATE/COUNTY-  MD/KENT
 JV4998  COUNTRY     -  US
 JV4998  USGS QUAD   -  CHESTERTOWN (2017)
 JV4998
 JV4998                         *CURRENT SURVEY CONTROL
 JV4998  ______________________________________________________________________
 JV4998* NAD 83(1991) POSITION- 39 13 07.39562(N) 076 04 05.80516(W)   ADJUSTED
 JV4998* NAVD 88 ORTHO HEIGHT -    23.    (meters)       75.    (feet) SCALED
 JV4998  ______________________________________________________________________
 JV4998  GEOID HEIGHT    -        -33.430 (meters)                     GEOID18
 JV4998  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 JV4998  HORZ ORDER      -  THIRD
 JV4998
 JV4998.The horizontal coordinates were established by classical geodetic methods
 JV4998.and adjusted by the National Geodetic Survey in January 1992.
 JV4998
 JV4998.The orthometric height was scaled from a topographic map.
 JV4998
 JV4998.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4998.GEOID18 height accuracy estimate available here.
 JV4998
 JV4998.Click photographs - Photos may exist for this station.
 JV4998
 JV4998.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4998
 JV4998. The following values were computed from the NAD 83(1991) position.
 JV4998
 JV4998;                    North         East     Units Scale Factor Converg.
 JV4998;SPC MD       -   172,697.677   480,458.547   MT  0.99996772   +0 35 05.2
 JV4998;SPC MD       -   566,592.30  1,576,304.42   sFT  0.99996772   +0 35 05.2
 JV4998;UTM  18      - 4,341,592.365   407,780.219   MT  0.99970471   -0 40 31.8
 JV4998
 JV4998!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4998!SPC MD       -   1.00000167  x   0.99996772  =   0.99996939
 JV4998!UTM  18      -   1.00000167  x   0.99970471  =   0.99970638
 JV4998
 JV4998_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0778041592(NAD 83)
 JV4998
 JV4998                          SUPERSEDED SURVEY CONTROL
 JV4998
 JV4998  NAD 83(1986)-  39 13 07.38786(N)    076 04 05.81467(W) AD(       ) 3
 JV4998  NAD 27      -  39 13 06.99700(N)    076 04 07.00900(W) AD(       ) 3
 JV4998
 JV4998.Superseded values are not recommended for survey control.
 JV4998
 JV4998.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4998.See file dsdata.pdf to determine how the superseded data were derived.
 JV4998
 JV4998_MARKER: DS = TRIANGULATION STATION DISK
 JV4998_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4998_STAMPING: COLLEGE NO 1 1934
 JV4998_MARK LOGO: CGS
 JV4998_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4998+STABILITY: SURFACE MOTION
 JV4998
 JV4998  HISTORY     - Date     Condition        Report By
 JV4998  HISTORY     - 1954     MONUMENTED       CGS
 JV4998
 JV4998                          STATION DESCRIPTION
 JV4998
 JV4998'DESCRIBED BY COAST AND GEODETIC SURVEY 1954 (IWS)
 JV4998'STATION COLLEGE IS LOCATED ON THE CAMPUS OF WASHINGTON COLLEGE,
 JV4998'CHESTERTOWN, MARYLAND, IN NW CORNER OF CAMPUS, 72.92 FEET SE OF THE
 JV4998'CENTER OF LEAD PIPE OF THE MUNICIPAL WATER TANK, 54 FEET S OF SE LEG
 JV4998'OF TANK, 61 FEET SE OF SW LEG OF TANK, 52 FEET W OF THE NW CORNER OF
 JV4998'TENNIS COURT.
 JV4998'
 JV4998'TO REACH THE STATION MARK FROM THE NORTHWEST END OF THE
 JV4998'U.S. HIGHWAY 213 BRIDGE OVER THE CHESTER RIVER AT CHESTERTOWN, GO
 JV4998'ABOUT 0.95 MILE NORTH ALONG THE HIGHWAY, THENCE 0.15 MILE SOUTH
 JV4998'ALONG COLLEGE AVENUE, NEAR THE NORTHWEST SIDE OF THE WASHINGTON
 JV4998'COLLEGE CAMPUS, NEAR THE CITY WATER TOWER.
 JV4998'
 JV4998'REFERENCE MARK NO.1 IS 144.53 FEET ENE OF STATION, 1 FOOT S OF
 JV4998'FENCE AND PROJECTS 6 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0278 ***********************************************************************
 JV0278  DESIGNATION -  COLLEGE RM 3
 JV0278  PID         -  JV0278
 JV0278  STATE/COUNTY-  MD/KENT
 JV0278  COUNTRY     -  US
 JV0278  USGS QUAD   -  CHESTERTOWN (2017)
 JV0278
 JV0278                         *CURRENT SURVEY CONTROL
 JV0278  ______________________________________________________________________
 JV0278* NAD 83(1986) POSITION- 39 13 06.68   (N) 076 04 06.63   (W)   HD_HELD1
 JV0278* NAVD 88 ORTHO HEIGHT -    23.107 (meters)       75.81  (feet) ADJUSTED
 JV0278  ______________________________________________________________________
 JV0278  GEOID HEIGHT    -        -33.430 (meters)                     GEOID18
 JV0278  DYNAMIC HEIGHT  -         23.095 (meters)       75.77  (feet) COMP
 JV0278  MODELED GRAVITY -    980,108.4   (mgal)                       NAVD 88
 JV0278
 JV0278  VERT ORDER      -  FIRST     CLASS II
 JV0278
 JV0278.The horizontal coordinates were determined by differentially corrected
 JV0278.hand held GPS observations or other comparable positioning techniques
 JV0278.and have an estimated accuracy of +/- 3 meters.
 JV0278
 JV0278.The orthometric height was determined by differential leveling and
 JV0278.adjusted by the NATIONAL GEODETIC SURVEY
 JV0278.in January 2023.
 JV0278
 JV0278.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0278.GEOID18 height accuracy estimate available here.
 JV0278
 JV0278.Click photographs - Photos may exist for this station.
 JV0278
 JV0278.The dynamic height is computed by dividing the NAVD 88
 JV0278.geopotential number by the normal gravity value computed on the
 JV0278.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0278.degrees latitude (g = 980.6199 gals.).
 JV0278
 JV0278.The modeled gravity was interpolated from observed gravity values.
 JV0278
 JV0278;                    North         East    Units  Estimated Accuracy
 JV0278;SPC MD       -   172,675.4     480,439.0     MT  (+/- 3 meters HH1 GPS) 
 JV0278
 JV0278_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0776041570(NAD 83)
 JV0278
 JV0278                          SUPERSEDED SURVEY CONTROL
 JV0278
 JV0278  NAVD 88 (06/15/91)   23.099  (m)           75.78   (f) SUPERSEDED  1 2
 JV0278  NGVD 29 (11/26/84)   23.340  (m)           76.57   (f) ADJUSTED    1 2
 JV0278
 JV0278.Superseded values are not recommended for survey control.
 JV0278
 JV0278.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0278.See file dsdata.pdf to determine how the superseded data were derived.
 JV0278
 JV0278_MARKER: DR = REFERENCE MARK DISK
 JV0278_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0278_SP_SET: BASE OF TOWER
 JV0278_STAMPING: COLLEGE NO 3 1964
 JV0278_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0278
 JV0278  HISTORY     - Date     Condition        Report By
 JV0278  HISTORY     - 1964     MONUMENTED       CGS
 JV0278  HISTORY     - 1971     GOOD             NGS
 JV0278  HISTORY     - 19901128 MARK NOT FOUND   USPSQD
 JV0278  HISTORY     - 20011229 MARK NOT FOUND   USPSQD
 JV0278
 JV0278                          STATION DESCRIPTION
 JV0278
 JV0278'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0278'1.1 MI N FROM CHESTERTOWN.
 JV0278'ABOUT 0.95 MILE NORTH ALONG U.S. HIGHWAY 213 FROM THE NORTHWEST
 JV0278'END OF THE HIGHWAY BRIDGE OVER THE CHESTER RIVER AT CHESTERTOWN,
 JV0278'THENCE 0.15 MILE SOUTH ALONG COLLEGE AVENUE, ALONG THE NORTHWEST
 JV0278'SIDE OF THE WASINGTON COLLEGE CAMPUS, NEAR THE CITY WATER TOWER,
 JV0278'SET ON THE TOP OF THE SOUTHWEST CORNER OF THE CONCRETE BASE
 JV0278'SUPPORTING THE SOUTHEAST LEG OF THE TOWER, 87.8 FEET EAST OF THE
 JV0278'CENTER LINE OF COLLEGE AVENUE, 54.4 FEET NORTH OF THE STATION
 JV0278'MARK DESCRIBED, 95.3 FEET NORTHEAST OF RM 4 DESCRIBED, AND ABOUT
 JV0278'7 FEET ABOVE THE LEVEL OF THE AVENUE.
 JV0278
 JV0278                          STATION RECOVERY (1990)
 JV0278
 JV0278'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0278'MARK NOT FOUND.
 JV0278
 JV0278                          STATION RECOVERY (2001)
 JV0278
 JV0278'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0278'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0276 ***********************************************************************
 JV0276  DESIGNATION -  COLLEGE RM 4
 JV0276  PID         -  JV0276
 JV0276  STATE/COUNTY-  MD/KENT
 JV0276  COUNTRY     -  US
 JV0276  USGS QUAD   -  CHESTERTOWN (2017)
 JV0276
 JV0276                         *CURRENT SURVEY CONTROL
 JV0276  ______________________________________________________________________
 JV0276* NAD 83(1986) POSITION- 39 13 05.95   (N) 076 04 07.40   (W)   HD_HELD1
 JV0276* NAVD 88 ORTHO HEIGHT -    22.139 (meters)       72.63  (feet) ADJUSTED
 JV0276  ______________________________________________________________________
 JV0276  GEOID HEIGHT    -        -33.430 (meters)                     GEOID18
 JV0276  DYNAMIC HEIGHT  -         22.128 (meters)       72.60  (feet) COMP
 JV0276  MODELED GRAVITY -    980,108.4   (mgal)                       NAVD 88
 JV0276
 JV0276  VERT ORDER      -  FIRST     CLASS II
 JV0276
 JV0276.The horizontal coordinates were determined by differentially corrected
 JV0276.hand held GPS observations or other comparable positioning techniques
 JV0276.and have an estimated accuracy of +/- 3 meters.
 JV0276
 JV0276.The orthometric height was determined by differential leveling and
 JV0276.adjusted by the NATIONAL GEODETIC SURVEY
 JV0276.in January 2023.
 JV0276
 JV0276.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0276.GEOID18 height accuracy estimate available here.
 JV0276
 JV0276.Click photographs - Photos may exist for this station.
 JV0276
 JV0276.The dynamic height is computed by dividing the NAVD 88
 JV0276.geopotential number by the normal gravity value computed on the
 JV0276.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0276.degrees latitude (g = 980.6199 gals.).
 JV0276
 JV0276.The modeled gravity was interpolated from observed gravity values.
 JV0276
 JV0276;                    North         East    Units  Estimated Accuracy
 JV0276;SPC MD       -   172,652.7     480,420.7     MT  (+/- 3 meters HH1 GPS) 
 JV0276
 JV0276_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0774141548(NAD 83)
 JV0276
 JV0276                          SUPERSEDED SURVEY CONTROL
 JV0276
 JV0276  NAVD 88 (06/15/91)   22.131  (m)           72.61   (f) SUPERSEDED  1 2
 JV0276  NGVD 29 (11/26/84)   22.372  (m)           73.40   (f) ADJUSTED    1 2
 JV0276
 JV0276.Superseded values are not recommended for survey control.
 JV0276
 JV0276.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0276.See file dsdata.pdf to determine how the superseded data were derived.
 JV0276
 JV0276_MARKER: DR = REFERENCE MARK DISK
 JV0276_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0276_STAMPING: COLLEGE NO 4 1964
 JV0276_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0276+STABILITY: SURFACE MOTION
 JV0276
 JV0276  HISTORY     - Date     Condition        Report By
 JV0276  HISTORY     - 1964     MONUMENTED       CGS
 JV0276  HISTORY     - 1971     GOOD             NGS
 JV0276  HISTORY     - 19901128 MARK NOT FOUND   USPSQD
 JV0276  HISTORY     - 20011229 MARK NOT FOUND   USPSQD
 JV0276
 JV0276                          STATION DESCRIPTION
 JV0276
 JV0276'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0276'1.1 MI N FROM CHESTERTOWN.
 JV0276'ABOUT 0.95 MILE NORTH ALONG U.S. HIGHWAY 213 FROM THE NORTHWEST
 JV0276'END OF THE HIGHWAY BRIDGE OVER THE CHESTER RIVER AT CHESTERTOWN,
 JV0276'THENCE 0.15 MILE SOUTH ALONG COLLEGE AVENUE, ALONG THE NORTHWEST
 JV0276'SIDE OF THE WASHINGTON COLLEGE CAMPUS, NEAR THE CITY WATER
 JV0276'TOWER, IN LINE WITH A ROW OF TREES, 44.8 FEET EAST OF THE
 JV0276'CENTER LINE OF COLLEGE AVENUE, 70.6 FEET SOUTH OF THE
 JV0276'SOUTHWEST CORNER OF THE CONCRETE BASE SUPPORTING THE SOUTHWEST
 JV0276'LEG OF A WATER TANK, 67.8 FEET SOUTH OF THE NORTHWEST CORNER OF
 JV0276'HUDSON HALL, 95.3 FEET SOUTHWEST OF RM 3 DESCRIBED, ABOUT 7
 JV0276'FEET ABOVE THE LEVEL OF THE AVENUE AND SET IN THE TOP OF A
 JV0276'CONCRETE POST FLUSH WITH THE GROUND.
 JV0276
 JV0276                          STATION RECOVERY (1990)
 JV0276
 JV0276'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0276'MARK NOT FOUND.
 JV0276
 JV0276                          STATION RECOVERY (2001)
 JV0276
 JV0276'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0276'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1448 ***********************************************************************
 HV1448  DESIGNATION -  COLLEGE RM 6
 HV1448  PID         -  HV1448
 HV1448  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1448  COUNTRY     -  US
 HV1448  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1448
 HV1448                         *CURRENT SURVEY CONTROL
 HV1448  ______________________________________________________________________
 HV1448* NAD 83(1986) POSITION- 38 59 03.91   (N) 076 56 40.84   (W)   HD_HELD1
 HV1448* NAVD 88 ORTHO HEIGHT -    51.718 (meters)      169.68  (feet) ADJUSTED
 HV1448  ______________________________________________________________________
 HV1448  GEOID HEIGHT    -        -32.114 (meters)                     GEOID18
 HV1448  DYNAMIC HEIGHT  -         51.691 (meters)      169.59  (feet) COMP
 HV1448  MODELED GRAVITY -    980,107.4   (mgal)                       NAVD 88
 HV1448
 HV1448  VERT ORDER      -  FIRST     CLASS I
 HV1448
 HV1448.The horizontal coordinates were determined by differentially corrected
 HV1448.hand held GPS observations or other comparable positioning techniques
 HV1448.and have an estimated accuracy of +/- 3 meters.
 HV1448
 HV1448.The orthometric height was determined by differential leveling and
 HV1448.adjusted by the NATIONAL GEODETIC SURVEY
 HV1448.in June 1991.
 HV1448
 HV1448.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1448.GEOID18 height accuracy estimate available here.
 HV1448
 HV1448.Click photographs - Photos may exist for this station.
 HV1448
 HV1448.The dynamic height is computed by dividing the NAVD 88
 HV1448.geopotential number by the normal gravity value computed on the
 HV1448.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1448.degrees latitude (g = 980.6199 gals.).
 HV1448
 HV1448.The modeled gravity was interpolated from observed gravity values.
 HV1448
 HV1448;                    North         East    Units  Estimated Accuracy
 HV1448;SPC MD       -   146,278.1     404,793.2     MT  (+/- 3 meters HH1 GPS) 
 HV1448
 HV1448_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3156316846(NAD 83)
 HV1448
 HV1448                          SUPERSEDED SURVEY CONTROL
 HV1448
 HV1448  NGVD 29 (11/26/84)   51.948  (m)          170.43   (f) ADJUSTED    1 1
 HV1448
 HV1448.Superseded values are not recommended for survey control.
 HV1448
 HV1448.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1448.See file dsdata.pdf to determine how the superseded data were derived.
 HV1448
 HV1448_MARKER: DR = REFERENCE MARK DISK
 HV1448_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV1448_SP_SET: STEP
 HV1448_STAMPING: COLLEGE NO 6 1933 1969
 HV1448_MARK LOGO: CGS
 HV1448_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1448
 HV1448  HISTORY     - Date     Condition        Report By
 HV1448  HISTORY     - 1969     MONUMENTED       CGS
 HV1448  HISTORY     - 1971     GOOD             NGS
 HV1448
 HV1448                          STATION DESCRIPTION
 HV1448
 HV1448'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1448'AT COLLEGE PARK.
 HV1448'AT COLLEGE PARK, AT THE UNIVERSITY OF MARYLAND, SET IN THE TOP
 HV1448'OF A CONCRETE WALKWAY ON THE TOP OF A HILL, 4.5 FEET SOUTHEAST OF
 HV1448'THE NORTH CORNER OF THE TOP STEP OF THE WALKWAY, 27.8 FEET
 HV1448'SOUTHEAST OF THE SOUTHEAST CORNER OF THE EAST WING OF WORCESTER
 HV1448'HALL, 109.5 FEET SOUTHWEST OF THE NORTHWEST CORNER OF MORRILL
 HV1448'HALL, 4.7 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A PARKING
 HV1448'AREA BETWEEN THE BUILDINGS, AND 102.8 FEET SOUTH-SOUTHWEST OF
 HV1448'TRIANGULATION STATION COLLEGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1516 ***********************************************************************
 HU1516  DESIGNATION -  COLLIER
 HU1516  PID         -  HU1516
 HU1516  STATE/COUNTY-  MD/WORCESTER
 HU1516  COUNTRY     -  US
 HU1516  USGS QUAD   -  OCEAN CITY (2016)
 HU1516
 HU1516                         *CURRENT SURVEY CONTROL
 HU1516  ______________________________________________________________________
 HU1516* NAD 83(1991) POSITION- 38 20 53.80758(N) 075 04 41.46811(W)   ADJUSTED
 HU1516* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU1516  ______________________________________________________________________
 HU1516  GEOID HEIGHT    -        -36.044 (meters)                     GEOID18
 HU1516  LAPLACE CORR    -         -0.62  (seconds)                    DEFLEC18
 HU1516  HORZ ORDER      -  THIRD
 HU1516
 HU1516.The horizontal coordinates were established by classical geodetic methods
 HU1516.and adjusted by the National Geodetic Survey in January 1992.
 HU1516
 HU1516.The orthometric height was scaled from a topographic map.
 HU1516
 HU1516.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1516.GEOID18 height accuracy estimate available here.
 HU1516
 HU1516.Click photographs - Photos may exist for this station.
 HU1516
 HU1516.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1516
 HU1516. The following values were computed from the NAD 83(1991) position.
 HU1516
 HU1516;                    North         East     Units Scale Factor Converg.
 HU1516;SPC MD       -    77,430.284   567,982.500   MT  0.99999195   +1 12 22.3
 HU1516;SPC MD       -   254,035.86  1,863,455.92   sFT  0.99999195   +1 12 22.3
 HU1516;UTM  18      - 4,244,461.437   493,168.106   MT  0.99960057   -0 02 54.6
 HU1516
 HU1516!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1516!SPC MD       -   1.00000538  x   0.99999195  =   0.99999733
 HU1516!UTM  18      -   1.00000538  x   0.99960057  =   0.99960595
 HU1516
 HU1516:                Primary Azimuth Mark                     Grid Az
 HU1516:SPC MD       -  CONVENT WATER TOWER                      195 55 17.3
 HU1516:UTM  18      -  CONVENT WATER TOWER                      197 10 34.2
 HU1516
 HU1516_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9316844461(NAD 83)
 HU1516
 HU1516|---------------------------------------------------------------------|
 HU1516| PID    Reference Object                     Distance      Geod. Az  |
 HU1516|                                                           dddmmss.s |
 HU1516| HU1513 CONVENT WATER TOWER                 APPROX. 0.5 KM 1970739.6 |
 HU1516|---------------------------------------------------------------------|
 HU1516
 HU1516                          SUPERSEDED SURVEY CONTROL
 HU1516
 HU1516  NAD 83(1986)-  38 20 53.78947(N)    075 04 41.49654(W) AD(       ) 3
 HU1516  NAD 27      -  38 20 53.37875(N)    075 04 42.84786(W) AD(       ) 3
 HU1516  USSD        -  38 20 53.57600(N)    075 04 42.60600(W) AD(       ) 3
 HU1516
 HU1516.Superseded values are not recommended for survey control.
 HU1516
 HU1516.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1516.See file dsdata.pdf to determine how the superseded data were derived.
 HU1516
 HU1516_MARKER: H = DRILL HOLE
 HU1516_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1516
 HU1516  HISTORY     - Date     Condition        Report By
 HU1516  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1516  HISTORY     - 1934     MARK NOT FOUND   CGS
 HU1516  HISTORY     - 1958     MARK NOT FOUND   CGS
 HU1516  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1516  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU1516
 HU1516                          STATION DESCRIPTION
 HU1516
 HU1516'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1516'ON THE EASTERN SHORE OF SINEPUXENT BAY, ABOUT MIDWAY BETWEEN BAY
 HU1516'AND OCEAN, 1/4 MILE NNE OF STATION CONVENT WATER TOWER AND 1/2
 HU1516'MILE S OF COLLIER ISLANDS, ON A SAND AND GRASS BEACH ABOUT 3 FEET
 HU1516'ABOVE HIGH WATER, ABOUT 65 YARDS W OF TOP OF SAND DUNES, 8 YARDS
 HU1516'N OF A HIGH-WATER OVERFLOW, AND 42 YARDS W OF LINE OF TELEPHONE
 HU1516'POLES.  MARKED BY THE CENTER OF STANDARD CEMENT MONUMENT OF THE
 HU1516'MARYLAND SHELL FISH SURVEY WHICH PROJECTS 3 TO 5 INCHES ABOVE
 HU1516'THE SURFACE WHICH IS MADE OF CONCRETE 2
 HU1516'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1516'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1516'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1516'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1516'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1516'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1516'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1516'THE LOCATION OF THE STATION.
 HU1516'
 HU1516'DISTANCES AND AZIMUTHS OF REFERENCE POINTS ARE AS FOLLOWS--CONVENT
 HU1516'CHIMNEY, 1/4 MILE, S 11 DEG 50 MIN W.  CONVENT WATER TOWER, 1/4 MILE,
 HU1516'S 17 DEG 09 MIN W.  EPISCOPAL CHURCH SPIRE, 1 MILE, S 19 DEG 35 W.
 HU1516'FLAGSTAFF ON ATLANTIC HOTEL, 1-1/2 MILES, S 20 DEG 19 W.
 HU1516'POWER-HOUSE CHIMNEY, 1-1/2 MILES, S 21 DEG 10 MIN W.  ICE PLANT
 HU1516'STACK, 1-3/4 MILES, S 23 DEG 53 MIN W.  CHIMNEY OF THOROFARE FARM
 HU1516'HOUSE, 1-1/4 MILES, N 86 DEG 34 MIN W.  EIGHTH TELEPHONE POLE N OF
 HU1516'CONVENT OF SAINT ROSE, 50 YARDS, N 65 DEG 55 MIN E.  SEVENTH
 HU1516'TELEPHONE POLE N OF CONVENT, 65 YARDS, S 18 DEG 43 MIN E.
 HU1516
 HU1516                          STATION RECOVERY (1934)
 HU1516
 HU1516'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1516'STATION NOT RECOVERED.  PREVIOUS DESCRIPTION CARRIED OUT AND LARGE
 HU1516'AREA DUG OVER BUT COULD NOT FIND STATION.  SAND BEACH IN THIS
 HU1516'LOCALITY HAS SHIFTED CONSIDERABLY.
 HU1516
 HU1516                          STATION RECOVERY (1958)
 HU1516
 HU1516'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1516'THE LOCATION OF THE STATION WAS VISITED AND AN ATTEMPT WAS MADE
 HU1516'TO RECOVER THE STATION.  NO MARKS WERE FOUND.
 HU1516
 HU1516                          STATION RECOVERY (1962)
 HU1516
 HU1516'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (WMR)
 HU1516'LOST.  THE AREA WAS SEARCHED FOR BUT THE STATION COULD NOT BE FOUND.
 HU1516
 HU1516                          STATION RECOVERY (2003)
 HU1516
 HU1516'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU1516'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7202 ***********************************************************************
 JV7202  DESIGNATION -  COLLINS
 JV7202  PID         -  JV7202
 JV7202  STATE/COUNTY-  MD/FREDERICK
 JV7202  COUNTRY     -  US
 JV7202  USGS QUAD   -  WOODSBORO (2016)
 JV7202
 JV7202                         *CURRENT SURVEY CONTROL
 JV7202  ______________________________________________________________________
 JV7202* NAD 83(2011) POSITION- 39 32 14.06568(N) 077 19 03.66384(W)   ADJUSTED
 JV7202* NAD 83(2011) ELLIP HT-    91.965 (meters)        (06/27/12)   ADJUSTED
 JV7202* NAD 83(2011) EPOCH   -  2010.00
 JV7202* NAVD 88 ORTHO HEIGHT -   124.8   (meters)      409.    (feet) GPS OBS
 JV7202  ______________________________________________________________________
 JV7202  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7202  GEOID HEIGHT    -        -33.170 (meters)                     GEOID93
 JV7202  GEOID HEIGHT    -        -32.859 (meters)                     GEOID18
 JV7202  NAD 83(2011) X  -  1,081,401.377 (meters)                     COMP
 JV7202  NAD 83(2011) Y  - -4,805,471.661 (meters)                     COMP
 JV7202  NAD 83(2011) Z  -  4,038,551.596 (meters)                     COMP
 JV7202  LAPLACE CORR    -          4.17  (seconds)                    DEFLEC18
 JV7202
 JV7202  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7202  Standards:
 JV7202         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7202            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7202  -------------------------------------------------------------------
 JV7202  NETWORK    2.12   2.61           0.92   0.81   1.33      0.06798861
 JV7202  -------------------------------------------------------------------
 JV7202  Click here for local accuracies and other accuracy information.
 JV7202
 JV7202.The horizontal coordinates were established by GPS observations
 JV7202.and adjusted by the National Geodetic Survey in June 2012.
 JV7202
 JV7202.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7202.been affixed to the stable North American tectonic plate. See 
 JV7202.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7202
 JV7202.The horizontal coordinates are valid at the epoch date displayed above
 JV7202.which is a decimal equivalence of Year/Month/Day.
 JV7202
 JV7202.The orthometric height was determined by GPS observations and a
 JV7202.high-resolution geoid model.
 JV7202
 JV7202.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7202.GEOID18 height accuracy estimate available here.
 JV7202
 JV7202.Click photographs - Photos may exist for this station.
 JV7202
 JV7202.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7202
 JV7202.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7202
 JV7202.The ellipsoidal height was determined by GPS observations
 JV7202.and is referenced to NAD 83.
 JV7202
 JV7202. The following values were computed from the NAD 83(2011) position.
 JV7202
 JV7202;                    North         East     Units Scale Factor Converg.
 JV7202;SPC MD       -   207,697.122   372,689.073   MT  1.00001643   -0 11 57.8
 JV7202;SPC MD       -   681,419.64  1,222,730.73   sFT  1.00001643   -0 11 57.8
 JV7202;UTM  18      - 4,378,962.700   300,823.752   MT  1.00008845   -1 28 33.2
 JV7202
 JV7202!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7202!SPC MD       -   0.99998557  x   1.00001643  =   1.00000200
 JV7202!UTM  18      -   0.99998557  x   1.00008845  =   1.00007402
 JV7202
 JV7202_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0082378962(NAD 83)
 JV7202
 JV7202                          SUPERSEDED SURVEY CONTROL
 JV7202
 JV7202  NAD 83(2007)-  39 32 14.06587(N)    077 19 03.66449(W) AD(2002.00) 0
 JV7202  ELLIP H (02/10/07)   91.988  (m)                       GP(2002.00)    
 JV7202  ELLIP H (08/30/02)   91.992  (m)                       GP(       ) 4 2
 JV7202  NAD 83(1991)-  39 32 14.06666(N)    077 19 03.66552(W) AD(       ) 1
 JV7202  ELLIP H (02/09/94)   91.911  (m)                       GP(       ) 4 1
 JV7202
 JV7202.Superseded values are not recommended for survey control.
 JV7202
 JV7202.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7202.See file dsdata.pdf to determine how the superseded data were derived.
 JV7202
 JV7202_MARKER: DD = SURVEY DISK
 JV7202_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7202_STAMPING: COLLINS 1993
 JV7202_MARK LOGO: MD-021
 JV7202_PROJECTION: FLUSH
 JV7202_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7202_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7202+STABILITY: SURFACE MOTION
 JV7202_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV7202+SATELLITE: SATELLITE OBSERVATIONS - April 19, 2020
 JV7202
 JV7202  HISTORY     - Date     Condition        Report By
 JV7202  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7202  HISTORY     - 20080523 GOOD             GEOCAC
 JV7202  HISTORY     - 20160520 GOOD             BASE9
 JV7202  HISTORY     - 20200419 GOOD             WSRR
 JV7202
 JV7202                          STATION DESCRIPTION
 JV7202
 JV7202'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7202'FROM WALKERSVILLE, MD, PROCEED NORTH ON MD RTE 194 TO THE INTERSECTION
 JV7202'OF RTE 194 AND DOROUS AL. IN WOODSBORO, MD. TURN LEFT ON DOROUS AND
 JV7202'PROCEED TO ADAMS STREET. TURN RIGHT AND PROCEED TO GRAVEL HILL ROAD.
 JV7202'TURN LEFT AND PROCEED OVER THE RAILROAD TRACKS TO MILL ROAD. TURN
 JV7202'RIGHT AND PROCEED 390 FEET (118.9 M) TO STATION ON THE LEFT. STATION
 JV7202'IS 2 FEET (0.6 M) EAST OF AN ELECTRIC WIRE FENCE AND 92 FEET
 JV7202'(28.0 M) SOUTHWEST OF THE CORNER OF A CHAINLINK FENCE FOR A LUMBER
 JV7202'YARD. STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND
 JV7202'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7202
 JV7202                          STATION RECOVERY (2008)
 JV7202
 JV7202'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV7202'50 FEET N OF THE SW CORNER OF THE LUMBER MILL BUILDING.  A POST IN THE
 JV7202'ELECTRIC FENCE ROW HAS BEEN MARKED AS A WITNESS POST.
 JV7202
 JV7202                          STATION RECOVERY (2016)
 JV7202
 JV7202'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 JV7202'SIGNIFICANT REMOVAL OF TREES AND BRUSH REQUIRED TO MAKE THIS STATION
 JV7202'GPSABLE.
 JV7202
 JV7202                          STATION RECOVERY (2020)
 JV7202
 JV7202'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV7202'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6842 ***********************************************************************
 HV6842  DESIGNATION -  COLLINS MSFC 1908
 HV6842  PID         -  HV6842
 HV6842  STATE/COUNTY-  MD/ST MARYS
 HV6842  COUNTRY     -  US
 HV6842  USGS QUAD   -  MECHANICSVILLE (2016)
 HV6842
 HV6842                         *CURRENT SURVEY CONTROL
 HV6842  ______________________________________________________________________
 HV6842* NAD 83(1993) POSITION- 38 28 09.81563(N) 076 39 32.89487(W)   ADJUSTED
 HV6842* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6842  ______________________________________________________________________
 HV6842  GEOID HEIGHT    -        -33.775 (meters)                     GEOID18
 HV6842  LAPLACE CORR    -         -3.66  (seconds)                    DEFLEC18
 HV6842  HORZ ORDER      -  SECOND
 HV6842
 HV6842.The horizontal coordinates were established by classical geodetic methods
 HV6842.and adjusted by the National Geodetic Survey in November 1994.
 HV6842
 HV6842.The orthometric height was scaled from a topographic map.
 HV6842
 HV6842.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6842.GEOID18 height accuracy estimate available here.
 HV6842
 HV6842.Click photographs - Photos may exist for this station.
 HV6842
 HV6842.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6842
 HV6842. The following values were computed from the NAD 83(1993) position.
 HV6842
 HV6842;                    North         East     Units Scale Factor Converg.
 HV6842;SPC MD       -    89,161.427   429,746.143   MT  0.99997485   +0 12 50.2
 HV6842;SPC MD       -   292,523.78  1,409,925.47   sFT  0.99997485   +0 12 50.2
 HV6842;UTM  18      - 4,259,201.152   355,260.921   MT  0.99985799   -1 01 56.4
 HV6842
 HV6842!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6842!SPC MD       -   1.00000534  x   0.99997485  =   0.99998019
 HV6842!UTM  18      -   1.00000534  x   0.99985799  =   0.99986333
 HV6842
 HV6842:                Primary Azimuth Mark                     Grid Az
 HV6842:SPC MD       -  CREMONA MSFC 1908                        175 18 34.7
 HV6842:UTM  18      -  CREMONA MSFC 1908                        176 33 21.3
 HV6842
 HV6842_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5526059201(NAD 83)
 HV6842
 HV6842|---------------------------------------------------------------------|
 HV6842| PID    Reference Object                     Distance      Geod. Az  |
 HV6842|                                                           dddmmss.s |
 HV6842| HV6847 CREMONA MSFC 1908                   APPROX. 1.4 KM 1753124.9 |
 HV6842|---------------------------------------------------------------------|
 HV6842
 HV6842                          SUPERSEDED SURVEY CONTROL
 HV6842
 HV6842  NAD 83(1991)-  38 28 09.81573(N)    076 39 32.89612(W) AD(       ) 2
 HV6842  NAD 83(1986)-  38 28 09.81502(N)    076 39 32.91011(W) AD(       ) 2
 HV6842  NAD 27      -  38 28 09.36900(N)    076 39 34.06300(W) AD(       ) 2
 HV6842  USSD        -  38 28 09.72600(N)    076 39 33.80300(W) AD(       ) 3
 HV6842
 HV6842.Superseded values are not recommended for survey control.
 HV6842
 HV6842.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6842.See file dsdata.pdf to determine how the superseded data were derived.
 HV6842
 HV6842_MARKER: H = DRILL HOLE
 HV6842_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6842_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6842+STABILITY: SURFACE MOTION
 HV6842
 HV6842  HISTORY     - Date     Condition        Report By
 HV6842  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6842  HISTORY     - 1930     GOOD             MDDNR
 HV6842  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6842  HISTORY     - 1953     MARK NOT FOUND   USGS
 HV6842
 HV6842                          STATION DESCRIPTION
 HV6842
 HV6842'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6842'STATION IS ON THE SW SHORE OF PATUXENT RIVER, ABOUT 1/4 MILE NE OF
 HV6842'ENTRANCE TO WASHINGTON CREEK, ON POINT OPPOSITE SHERIDAN POINT, ON
 HV6842'MARSH LAND, ABOUT 1 FOOT ABOVE HIGH WATER, 16 YARDS W OF SHORE, 20
 HV6842'YARDS NW OF SHORE, 21 YARDS SW OF SHORE, 300 YARDS NE OF A TALL
 HV6842'LONE TREE, AND 300 YARDS SE OF HOUSE KNOWN AS TRENT HALL.  STATION
 HV6842'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6842'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6842'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6842'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6842'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6842'AS FOLLOWS--SMOKE PIPE IN CHIMNEY ON STORE, 1/2 MILE, S 17 DEG 29
 HV6842'MIN W.  LARGE LONE TREE, 300 YARDS, S 48 DEG 8 MIN W.  SMALL LONE
 HV6842'TREE, 130 YARDS, N 85 DEG 49 MIN W.  NEAR CORNER OF TRENT HALL
 HV6842'WHARF HOUSE, 1/2 MILE, N 16 DEG 22 MIN W.  CHIMNEY ON END OF ROOF
 HV6842'AMONG TREES, 2-1/4 MILES, N 26 DEG 42 MIN E.  LEFT CORNER OF LEFT
 HV6842'CHIMNEY OF DOWELLS HOUSE, 1 MILE, S 86 DEG 48 MIN E.  LEFT END OF
 HV6842'PEAK OF ROOF OF DE LA BROOKE PIER, 2-1/4 MILES S 28 DEG 47 MIN E.
 HV6842'RIGHT SIDE OF RIGHT CHIMNEY OF LARGE PAINTED BRICK HOUSE, 2-1/4
 HV6842'MILES, S 20 DEG 36 MIN E.  NEAR CORNER OF THOMAS HOUSE (CREMONA),
 HV6842'1 MILE, S 7 DEG 37 MIN E.
 HV6842
 HV6842                          STATION RECOVERY (1930)
 HV6842
 HV6842'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6842'STATION RECOVERED AND TRIPOD ERECTED.
 HV6842
 HV6842                          STATION RECOVERY (1943)
 HV6842
 HV6842'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6842'THIS STATION COULD NOT BE FOUND AFTER AN EXTENSIVE THREE-HOUR
 HV6842'SEARCH.  ACCORDING TO THE LOCAL RESIDENTS, THE STATION WAS LAST
 HV6842'SEEN IN 1934 AND AT THAT TIME IT WAS NEAR THE HIGH-WATER LINE.
 HV6842'IT IS THOUGHT THAT THIS STATION HAS WASHED OUT SINCE 1934.
 HV6842'
 HV6842'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
 HV6842
 HV6842                          STATION RECOVERY (1953)
 HV6842
 HV6842'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV6842'STATION WAS NOT FOUND.  PROBABLY WASHED OUT FROM HIGH TIDES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6664 ***********************************************************************
 HV6664  DESIGNATION -  COLLISON
 HV6664  PID         -  HV6664
 HV6664  STATE/COUNTY-  MD/ST MARYS
 HV6664  COUNTRY     -  US
 HV6664  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6664
 HV6664                         *CURRENT SURVEY CONTROL
 HV6664  ______________________________________________________________________
 HV6664* NAD 83(1991) POSITION- 38 15 31.19049(N) 076 26 06.27511(W)   ADJUSTED
 HV6664* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 HV6664  ______________________________________________________________________
 HV6664  GEOID HEIGHT    -        -34.580 (meters)                     GEOID18
 HV6664  LAPLACE CORR    -         -6.09  (seconds)                    DEFLEC18
 HV6664  HORZ ORDER      -  FIRST
 HV6664
 HV6664.The horizontal coordinates were established by classical geodetic methods
 HV6664.and adjusted by the National Geodetic Survey in January 1992.
 HV6664
 HV6664.The orthometric height was scaled from a topographic map.
 HV6664
 HV6664.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6664.GEOID18 height accuracy estimate available here.
 HV6664
 HV6664.Click photographs - Photos may exist for this station.
 HV6664
 HV6664.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6664
 HV6664. The following values were computed from the NAD 83(1991) position.
 HV6664
 HV6664;                    North         East     Units Scale Factor Converg.
 HV6664;SPC MD       -    65,867.460   449,443.892   MT  1.00000745   +0 21 16.4
 HV6664;SPC MD       -   216,100.16  1,474,550.50   sFT  1.00000745   +0 21 16.4
 HV6664;UTM  18      - 4,235,488.715   374,444.872   MT  0.99979414   -0 53 19.4
 HV6664
 HV6664!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6664!SPC MD       -   1.00000013  x   1.00000745  =   1.00000758
 HV6664!UTM  18      -   1.00000013  x   0.99979414  =   0.99979427
 HV6664
 HV6664:                Primary Azimuth Mark                     Grid Az
 HV6664:SPC MD       -  NORRIS                                   151 50 08.0
 HV6664:UTM  18      -  NORRIS                                   153 04 43.8
 HV6664
 HV6664_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7444435488(NAD 83)
 HV6664
 HV6664|---------------------------------------------------------------------|
 HV6664| PID    Reference Object                     Distance      Geod. Az  |
 HV6664|                                                           dddmmss.s |
 HV6664| HV6671 JARBOESVILLE CEDAR PT FARM TK       APPROX. 6.5 KM 0394516.4 |
 HV6664| CX2634 COLLISON AZ MK                                     1480909.0 |
 HV6664| HV6616 NORRIS                              APPROX. 7.6 KM 1521124.4 |
 HV6664| AJ7227 COLLISON RM 2                        38.707 METERS 23910     |
 HV6664| HV6618 GREAT MILLS LOOKOUT TOWER           APPROX. 5.0 KM 2500108.3 |
 HV6664| HV9001 COLLISON AZ MK 2                    463.820 METERS 3053008.8 |
 HV6664| AJ7226 COLLISON NO 1                        40.088 METERS 35648     |
 HV6664|---------------------------------------------------------------------|
 HV6664
 HV6664                          SUPERSEDED SURVEY CONTROL
 HV6664
 HV6664  NAD 83(1986)-  38 15 31.19107(N)    076 26 06.29015(W) AD(       ) 1
 HV6664  NAD 27      -  38 15 30.74300(N)    076 26 07.46600(W) AD(       ) 1
 HV6664
 HV6664.Superseded values are not recommended for survey control.
 HV6664
 HV6664.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6664.See file dsdata.pdf to determine how the superseded data were derived.
 HV6664
 HV6664_MARKER: DS = TRIANGULATION STATION DISK
 HV6664_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6664_STAMPING: COLLISON 1942
 HV6664_MARK LOGO: CGS
 HV6664_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV6664_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6664+STABILITY: SURFACE MOTION
 HV6664
 HV6664  HISTORY     - Date     Condition        Report By
 HV6664  HISTORY     - 1942     MONUMENTED       CGS
 HV6664  HISTORY     - 1943     GOOD             CGS
 HV6664  HISTORY     - 1945     GOOD             USN
 HV6664  HISTORY     - 1958     GOOD             CGS
 HV6664  HISTORY     - 1965     GOOD             USN
 HV6664  HISTORY     - 1987     GOOD             NGS
 HV6664
 HV6664                          STATION DESCRIPTION
 HV6664
 HV6664'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6664'STATION IS 1.2 MILES BY ROAD SE OF JARBOESVILLE ON THE PROPERTY
 HV6664'OF MR. COLLISON BUT UNDER CONDEMNATION PROCEEDINGS FOR TRANSFER
 HV6664'TO THE GOVERNMENT FOR THE CEDAR POINT AIR BASE.  IT IS IN PASTURE
 HV6664'LAND IN A PARTITION FENCE LINE, 75 FEET S OF THE N FENCE OF THE
 HV6664'PASTURE AND ABOUT 400 YARDS N OF THE COLLISON FARMHOUSE.  IT IS
 HV6664'SET 8 INCHES BELOW THE SURFACE OF THE GROUND AND IS STAMPED
 HV6664'COLLISON 1942.
 HV6664'
 HV6664'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 HV6664'DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HV6664'
 HV6664'REFERENCE MARK NO.1 IS NE OF THE STATION, 5 FEET S OF THE N
 HV6664'PASTURE FENCE.  IT IS STAMPED COLLISON NO.1 1942, AND PROJECTS
 HV6664'ABOUT 6 INCHES.
 HV6664'
 HV6664'REFERENCE MARK NO.2 IS NW OF THE STATION, 10 FEET S OF THE N
 HV6664'PASTURE FENCE.  IT IS STAMPED COLLISON NO.2 1942, AND PROJECTS
 HV6664'ABOUT 4 INCHES.
 HV6664'
 HV6664'AZIMUTH MARK IS ABOUT 0.4 MILE S OF THE STATION, 100 FEET E OF
 HV6664'THE CENTER OF STATE HIGHWAY 235.  IT PROJECTS ABOUT 8 INCHES AND
 HV6664'IS STAMPED COLLISON 1942.  TO REACH FROM THE DRIVEWAY INTO THE
 HV6664'COLLISON FARMYARD GO S ON STATE HIGHWAY 235 FOR 0.3 MILE TO THE
 HV6664'AZIMUTH MARK ON THE LEFT.
 HV6664'
 HV6664'TO REACH THE STATION FROM JARBOESVILLE GO S ON STATE HIGHWAY 235
 HV6664'FOR 1.2 MILES TO MR. COLLISONS HOUSE ON THE LEFT.  THIS POINT IS
 HV6664'ABOUT 0.1 MILE S OF A SCHOOL ON THE LEFT.  TURN LEFT INTO
 HV6664'THE FARMYARD AND GO TO A GATE ABOUT 100 YARDS NE OF THE HOUSE.
 HV6664'PASS THROUGH THE GATE AND GO N ACROSS THE PASTURE FOR ABOUT 250
 HV6664'YARDS TO THE STATION.
 HV6664'
 HV6664'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT NORRIS.
 HV6664'
 HV6664'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT CHASE.
 HV6664'
 HV6664'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT HEWITT.
 HV6664'
 HV6664'A 103-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT BARREDA.
 HV6664'
 HV6664'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT CEDAR POINT 2.
 HV6664
 HV6664                          STATION RECOVERY (1943)
 HV6664
 HV6664'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6664'STATION AND REFERENCE MARKS WERE RECOVERED AND FOUND TO BE IN
 HV6664'GOOD CONDITION.  DISTANCES TO THE REFERENCE MARKS WERE
 HV6664'VERIFIED.  DUE TO MANY CHANGES IN THE VICINITY INCIDENTAL TO THE
 HV6664'CONSTRUCTION OF THE AIR BASE, THE ORIGINAL DESCRIPTION IS NOW
 HV6664'ENTIRELY INADEQUATE AND A COMPLETE NEW DESCRIPTION FOLLOWS--
 HV6664'
 HV6664'STATION IS LOCATED IN THE N EDGE OF PASTURE LAND, 0.1 MILE S OF
 HV6664'A SCHOOL, IN A FENCELINE, 8 METERS S OF THE CENTER LINE OF
 HV6664'A ROAD, AND WITNESSED BY A WHITE POINTED POST EXTENDING 4 FEET
 HV6664'ABOVE THE SURFACE.
 HV6664'
 HV6664'STATION MARK IS A BRONZE STATION DISK, STAMPED COLLISON 1942,
 HV6664'AND SET 4 INCHES BELOW THE SURFACE IN A CAPPED CONCRETE CYLINDER.
 HV6664'
 HV6664'REFERENCE MARK 1 IS NE OF THE STATION, AT THE EDGE OF WOODS, 10
 HV6664'FEET S OF FENCE, AND 12 METERS E OF THE CENTER LINE OF THE ROAD.  IT
 HV6664'IS A BRONZE REFERENCE DISK, STAMPED COLLISON NO. 1 1942, AND
 HV6664'PROJECTS ABOUT 2 INCHES ABOVE THE SURFACE.
 HV6664'
 HV6664'REFERENCE MARK 2 IS NW OF THE STATION, 10 FEET S OF THE N PASTURE
 HV6664'FENCE, AND 10 FEET N OF A 16-FOOT MESH WIRE FENCE.  IT IS A BRONZE
 HV6664'REFERENCE DISK, STAMPED COLLISON NO. 2 1942, AND IS FLUSH WITH
 HV6664'THE GROUND.
 HV6664'
 HV6664'AZIMUTH MARK IS 0.4 MILE S OF THE STATION, BY ROAD, 100 FEET E
 HV6664'OF THE CENTER LINE OF STATE HIGHWAY 235, IN A FENCELINE, AND AT
 HV6664'THE BASE OF A 10-INCH CEDAR TREE.  IT IS A BRONZE AZIMUTH DISK,
 HV6664'STAMPED COLLISON 1942, AND PROJECTS ABOUT 6 INCHES ABOVE THE
 HV6664'GROUND.
 HV6664'
 HV6664'TO REACH THE STATION FROM THE MAIN GATE OF THE U.S. NAVAL AIR
 HV6664'STATION AT JARBOESVILLE, GO S ALONG A GRAVEL ROAD INSIDE OF THE
 HV6664'BASE FOR 1.2 MILES TO A RIGHT-ANGLE TURN IN THE ROAD AND THE
 HV6664'STATION.
 HV6664
 HV6664                          STATION RECOVERY (1945)
 HV6664
 HV6664'RECOVERY NOTE BY US NAVY 1945 (RM)
 HV6664'WE HAVE RECOVERED STATION COLLISON APPARENTLY IN SOUND
 HV6664'CONDITION.  CONSIDERABLE TOP SOIL HAS BEEN REMOVED FROM ABOVE IT
 HV6664'BY HEAVY EARTH MOVING EQUIPMENT AND IT WAS FOUND UNDER 4 INCHES
 HV6664'OF EXTREMELY HARD CLAY.
 HV6664
 HV6664                          STATION RECOVERY (1958)
 HV6664
 HV6664'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6664'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD
 HV6664'CONDITION.  THE AZIMUTH MARK WAS FOUND LYING ON ITS SIDE, AND
 HV6664'SHOULD BE LISTED AS DESTROYED.  A NEW DESCRIPTION FOLLOWS--
 HV6664'
 HV6664'COLLISON 1942 IS LOCATED 1 MI. SE AND INSIDE THE MAIN GATE OF
 HV6664'THE PUTUXENT RIVER NAVAL TEST CENTER, LEXINGTON PARK, MARYLAND.  IT
 HV6664'LIES 0.1 MI. NE OF STATE ROUTE 235 AND 8 M. SE OF THE CENTERLINE
 HV6664'OF THE ROAD.
 HV6664'
 HV6664'STATION IS MARKED BY A STANDARD DISK, STAMPED COLLISON 1942,
 HV6664'WHICH IS SET IN A 12-IN. CONCRETE CYLINDER THAT IS FLUSH WITH
 HV6664'THE GROUND.
 HV6664'
 HV6664'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED COLLISON NO 1 1942,
 HV6664'WHICH IS SET IN A 12-IN. CONCRETE CYLINDER THAT PROJECTS 3 IN. ABOVE
 HV6664'THE SURFACE AND LIES ON THE NAVAL BASE JUST INSIDE THE EDGE OF A
 HV6664'WOODS, 104 FT. NE OF THE CORNER OF A 12-FT. CYCLON FENCE AND 22
 HV6664'FT.  S OF THE LARGEST OAK TREE.  THE STATION MARK LIES 131 FT. S.
 HV6664'
 HV6664'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED COLLISON NO 2 1942,
 HV6664'WHICH IS SET IN A CONCRETE CYLINDER THAT PROJECTS 2 IN. ABOVE
 HV6664'THE SURFACE AND LIES IN A DENSE WOODS 0.1 MI. NE OF STATE ROUTE
 HV6664'235 AND 8 FT. NW OF A 12-FT. CYCLON FENCE.  THE STATION MARK LIES
 HV6664'127 FT. TO THE NE.
 HV6664
 HV6664                          STATION RECOVERY (1965)
 HV6664
 HV6664'RECOVERY NOTE BY US NAVY 1965
 HV6664'STATION WAS RECOVERED.  MONUMENT WITH DISK IS NOW FLUSH WITH
 HV6664'SURFACE OF GROUND IN THIS GRASSY AREA ON LINE WITH HANEY ROAD
 HV6664'CLEARING TO WEST.
 HV6664'
 HV6664'REFERENCE MARKS WERE NOT SEARCHED FOR.  AZIMUTH MARK WAS HIT AND
 HV6664'MOVED BY HEAVY EQUIPMENT.
 HV6664'
 HV6664'PREVIOUS DESCRIPTION INADEQUATE, NEW DESCRIPTION FOLLOWS--TO REACH
 HV6664'FROM MAIN GATE TURN RIGHT ON SAUNDER ROAD APPROXIMATELY 100
 HV6664'YDS. INSIDE GATE, PROCEED ALONG SAUNDER ROAD APPROXIMATELY 1 MILE
 HV6664'TO EDGE OF M.E.M.Q. 738-797 AREA AT EASTERN INTERSECTION OF HANEY
 HV6664'ROAD WITH SAUNDERS ROAD TURN ONTO HANEY ROAD FROM M.E.M.Q.
 HV6664'(GRAVEL ROAD) PROCEED APPROXIMATELY 1/4 MILE.  STATION IS 30 FT
 HV6664'LEFT OF ROAD IN GRASSY CLEARED AREA JUST AFTER FIRST SHARP
 HV6664'CURVE.
 HV6664
 HV6664                          STATION RECOVERY (1987)
 HV6664
 HV6664'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HV6664'THE DESIGNATED MARK WAS RECOVERED AS PREVIOUSLY DESCRIBED.
 HV6664'THE STATION MARK ALONG WITH BOTH REFERENCE MARKS WERE RECOVERED AND
 HV6664'FOUND IN GOOD CONDITION AS DESCRIBED IN THE MOST RECENT INFORMARION
 HV6664'AVAILABLE. THE AZIMUTH MARK WAS SEARCHED FOR BUT NOT FOUND AND
 HV6664'IT IS BELIEVED DESTROYED AS PREVIOUSLY REPORTED. A SHORTER DISTANCE
 HV6664'OF 0.032 METERS OR 0.11 FT WAS NOTED TO REFERENCE MARK ONE. ALL
 HV6664'OTHER DISTANCES AND DIRECTIONS WERE WITHIN CLOSE AGREEMENT WITH THE
 HV6664'MOST RECENT INFORMATION AVAILABLE. A NEW AZIMUTH MARK TWO WAS
 HV6664'ESTABLISHED, SEE DESCRIPTION THEREOF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9001 ***********************************************************************
 HV9001  DESIGNATION -  COLLISON AZ MK 2
 HV9001  PID         -  HV9001
 HV9001  STATE/COUNTY-  MD/ST MARYS
 HV9001  COUNTRY     -  US
 HV9001  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV9001
 HV9001                         *CURRENT SURVEY CONTROL
 HV9001  ______________________________________________________________________
 HV9001* NAD 83(1991) POSITION- 38 15 39.92567(N) 076 26 21.80703(W)   ADJUSTED
 HV9001* NAVD 88 ORTHO HEIGHT -    31.    (meters)      102.    (feet) SCALED
 HV9001  ______________________________________________________________________
 HV9001  GEOID HEIGHT    -        -34.560 (meters)                     GEOID18
 HV9001  LAPLACE CORR    -         -6.05  (seconds)                    DEFLEC18
 HV9001  HORZ ORDER      -  SECOND
 HV9001
 HV9001.The horizontal coordinates were established by classical geodetic methods
 HV9001.and adjusted by the National Geodetic Survey in January 1992.
 HV9001
 HV9001.The orthometric height was scaled from a topographic map.
 HV9001
 HV9001.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9001.GEOID18 height accuracy estimate available here.
 HV9001
 HV9001.Click photographs - Photos may exist for this station.
 HV9001
 HV9001.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9001
 HV9001. The following values were computed from the NAD 83(1991) position.
 HV9001
 HV9001;                    North         East     Units Scale Factor Converg.
 HV9001;SPC MD       -    66,134.467   449,064.630   MT  1.00000700   +0 21 06.7
 HV9001;SPC MD       -   216,976.16  1,473,306.21   sFT  1.00000700   +0 21 06.7
 HV9001;UTM  18      - 4,235,763.830   374,071.573   MT  0.99979530   -0 53 29.2
 HV9001
 HV9001!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9001!SPC MD       -   1.00000055  x   1.00000700  =   1.00000755
 HV9001!UTM  18      -   1.00000055  x   0.99979530  =   0.99979585
 HV9001
 HV9001_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7407135763(NAD 83)
 HV9001
 HV9001                          SUPERSEDED SURVEY CONTROL
 HV9001
 HV9001  NAD 83(1986)-  38 15 39.92660(N)    076 26 21.82177(W) AD(       ) 2
 HV9001
 HV9001.Superseded values are not recommended for survey control.
 HV9001
 HV9001.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9001.See file dsdata.pdf to determine how the superseded data were derived.
 HV9001
 HV9001_MARKER: DZ = AZIMUTH MARK DISK
 HV9001_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV9001+WITH SETTING: PAVEMENT
 HV9001_SP_SET: SLAB
 HV9001_STAMPING: COLLISON 1942 NO 2 1987
 HV9001_MARK LOGO: NGS
 HV9001_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV9001_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9001+STABILITY: SURFACE MOTION
 HV9001
 HV9001  HISTORY     - Date     Condition        Report By
 HV9001  HISTORY     - 1987     MONUMENTED       NGS
 HV9001
 HV9001                          STATION DESCRIPTION
 HV9001
 HV9001'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HV9001'THE STATION IS LOCATED ABOUT 1.6 KM (1 MI) SOUTHEAST OF LEXINGTON
 HV9001'PARK, IN THE SOUTHWEST EDGE OF THE PATUXENT NAVAL AIR TEST STATION
 HV9001'AND IN THE NORTHWEST EDGE OF AN ABANDONED HOUSEING AREA.
 HV9001'OWNERSHIP--UNITED STATES NAVY PROPERTY.
 HV9001'
 HV9001'TO REACH THE STATION FROM THE MAIN GATE AT THE ENTRANCE TO THE
 HV9001'PATUXENT NAVAL AIR TEST STATION AT LEXINGTON PARK, GO
 HV9001'NORTHEAST FOR 0.05 KM (0.05 MI) ON A PAVED ROAD TO A CROSSROADS.
 HV9001'TURN RIGHT AND GO SOUTHEAST FOR 1.2 KM (0.75 MI) ON SAUNDERS ROAD
 HV9001'TO A SIDE ROAD LEFT.
 HV9001'TURN LEFT AND GO NORTHEAST FOR 0.15 KM (0.1 MI) ON SAUNDERS ROAD TO
 HV9001'THE STATION ON THE LEFT AT A POINT WHERE ANOTHER ROAD JUNCTIONS TO
 HV9001'THE SOUTHEAST.
 HV9001'
 HV9001'THE STATION IS A STANDARD NGS DISK
 HV9001'STAMPED---COLLISON 1942 NO 2 1987---,
 HV9001'SET INTO A DRILL HOLE IN A 9 BY 15 FOOT SQUARE CONCRETE SLAB AND
 HV9001'IT IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV9001'6.7 METERS (22 FT) NORTHWEST FROM THE CENTER OF THE ROAD
 HV9001'INTERSECTION,
 HV9001'23.6 METERS (77.5 FT) NORTH FROM THE NORTH CORNER OF AN ABANDONED
 HV9001'HOUSE NUMBERED 765A,
 HV9001'21.2 METERS (69.7 FT) WEST FROM THE WEST CORNER OF AN ABANDONED
 HV9001'HOUSE NUMBERED 764A,
 HV9001'4.0 METERS (13 FT) SOUTHWEST FROM THE CENTER OF A DROP INLET,
 HV9001'14.9 METERS (49 FT) WEST FROM A POWERLINE POLE NUMBERED ONE AND
 HV9001'0.7 METERS (2.4 FT) WEST FROM THE EAST CORNER OF THE CONCRETE SLAB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7226 ***********************************************************************
 AJ7226  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7226  DESIGNATION -  COLLISON NO 1
 AJ7226  PID         -  AJ7226
 AJ7226  STATE/COUNTY-  MD/ST MARYS
 AJ7226  COUNTRY     -  US
 AJ7226  USGS QUAD   -  SOLOMONS ISLAND (2016)
 AJ7226
 AJ7226                         *CURRENT SURVEY CONTROL
 AJ7226  ______________________________________________________________________
 AJ7226* NAD 83(2011) POSITION- 38 15 32.48916(N) 076 26 06.38231(W)   ADJUSTED
 AJ7226* NAD 83(2011) ELLIP HT-     0.493 (meters)        (06/27/12)   ADJUSTED
 AJ7226* NAD 83(2011) EPOCH   -  2010.00
 AJ7226* NAVD 88 ORTHO HEIGHT -    35.0   (meters)      115.    (feet) GPS OBS
 AJ7226  ______________________________________________________________________
 AJ7226  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ7226  GEOID HEIGHT    -        -34.510 (meters)                     GEOID99
 AJ7226  GEOID HEIGHT    -        -34.579 (meters)                     GEOID18
 AJ7226  NAD 83(2011) X  -  1,176,175.180 (meters)                     COMP
 AJ7226  NAD 83(2011) Y  - -4,874,792.425 (meters)                     COMP
 AJ7226  NAD 83(2011) Z  -  3,928,060.653 (meters)                     COMP
 AJ7226  LAPLACE CORR    -         -6.09  (seconds)                    DEFLEC18
 AJ7226
 AJ7226  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7226  Standards:
 AJ7226         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7226            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7226  -------------------------------------------------------------------
 AJ7226  NETWORK    0.66   1.33           0.29   0.25   0.68     -0.02151834
 AJ7226  -------------------------------------------------------------------
 AJ7226  Click here for local accuracies and other accuracy information.
 AJ7226
 AJ7226.The horizontal coordinates were established by GPS observations
 AJ7226.and adjusted by the National Geodetic Survey in June 2012.
 AJ7226
 AJ7226.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7226.been affixed to the stable North American tectonic plate. See 
 AJ7226.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7226
 AJ7226.The horizontal coordinates are valid at the epoch date displayed above
 AJ7226.which is a decimal equivalence of Year/Month/Day.
 AJ7226
 AJ7226.The orthometric height was determined by GPS observations and a
 AJ7226.high-resolution geoid model.
 AJ7226
 AJ7226.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7226.GEOID18 height accuracy estimate available here.
 AJ7226
 AJ7226.Click photographs - Photos may exist for this station.
 AJ7226
 AJ7226.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7226
 AJ7226.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7226
 AJ7226.The ellipsoidal height was determined by GPS observations
 AJ7226.and is referenced to NAD 83.
 AJ7226
 AJ7226. The following values were computed from the NAD 83(2011) position.
 AJ7226
 AJ7226;                    North         East     Units Scale Factor Converg.
 AJ7226;SPC MD       -    65,907.486   449,441.038   MT  1.00000738   +0 21 16.4
 AJ7226;SPC MD       -   216,231.48  1,474,541.14   sFT  1.00000738   +0 21 16.4
 AJ7226;UTM  18      - 4,235,528.785   374,442.888   MT  0.99979415   -0 53 19.5
 AJ7226
 AJ7226!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7226!SPC MD       -   0.99999992  x   1.00000738  =   1.00000730
 AJ7226!UTM  18      -   0.99999992  x   0.99979415  =   0.99979407
 AJ7226
 AJ7226_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7444235528(NAD 83)
 AJ7226
 AJ7226                          SUPERSEDED SURVEY CONTROL
 AJ7226
 AJ7226  NAD 83(2007)-  38 15 32.48936(N)    076 26 06.38314(W) AD(2002.00) 0
 AJ7226  ELLIP H (02/10/07)    0.517  (m)                       GP(2002.00)    
 AJ7226  NAD 83(1991)-  38 15 32.48914(N)    076 26 06.38315(W) AD(       ) A
 AJ7226  ELLIP H (02/12/02)    0.524  (m)                       GP(       ) 4 1
 AJ7226
 AJ7226.Superseded values are not recommended for survey control.
 AJ7226
 AJ7226.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7226.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7226
 AJ7226_MARKER: DR = REFERENCE MARK DISK
 AJ7226_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7226_STAMPING: COLLISON NO 1 1942
 AJ7226_MARK LOGO: CGS
 AJ7226_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ7226_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7226+STABILITY: SURFACE MOTION
 AJ7226_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7226+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2004
 AJ7226
 AJ7226  HISTORY     - Date     Condition        Report By
 AJ7226  HISTORY     - 1942     MONUMENTED       CGS
 AJ7226  HISTORY     - 20001018 GOOD             NGS
 AJ7226  HISTORY     - 20040630 GOOD             ENGGRO
 AJ7226
 AJ7226                          STATION DESCRIPTION
 AJ7226
 AJ7226'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (FJH)
 AJ7226'STATION IS LOCATED IN ST MARYS COUNTY MARYLAND ABOUT 1 MI (1.6 KM)
 AJ7226'SOUTHEAST OF LEXINGTON PARK 1 MI (1.6 KM) NORTHWEST OF HERMANVILLE AND
 AJ7226'ABOUT 5 MI (8.0 KM) SOUTHEAST OF SOLOMONS.  IT IS ON THE GROUNDS OF
 AJ7226'THE NAVAL AIR STATION PATUXENT RIVER.  TO REACH THE STATION FROM THE
 AJ7226'INTERSECTION OF ROUTES 246 AND 235, GO NORTHEAST ON CEDAR POINT RD FOR
 AJ7226'0.1 MI.  (0.2 KM) TURN RIGHT ON CUDDIHY ROAD AND GO 1 MI (1.6 KM) TO
 AJ7226'THE STATION ON THE LEFT.  STATION IS LOCATD IN AN OPEN FIELD BOUNDED
 AJ7226'BY A SMALL PINE FOREST TO THE SOUTH.  THE STATION IS 500.1 FT (152.4
 AJ7226'M) NORTHEAST OF A LARGE CHAIN LINK FENCE POST.  THE FENCE POST IS
 AJ7226'OPPOSITE A DRAINAGE CULVERT RUNNING UNDER MD RTE 235. THE STATION IS
 AJ7226'131.6 FT (40.1 M) NORTH OF STATION COLLISON (HV6664) AND 331.4 FT
 AJ7226'(101.0 M) FROM THE FACE OF A 30-IN DIAMETER WHITE OAK TREE.  THE
 AJ7226'STATION IS LOCATED ON A SMALL MOUND OF EARTH ABOUT 1 FT (0.3 M) ABOVE
 AJ7226'THE SURROUNDING GRADE.  A SECURITY PASS IS REQUIRED TO ACCESS THE
 AJ7226'NAVAL AIR STATION.  AN ESCORT MAY BE REQUIRED IF WORKING OUTSIDE OF
 AJ7226'NORMAL WORKING HOURS.
 AJ7226
 AJ7226                          STATION RECOVERY (2004)
 AJ7226
 AJ7226'RECOVERY NOTE BY THE ENGINEERING GROUPE INC 2004 (BWJ)
 AJ7226'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6214 ***********************************************************************
 DN6214  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6214  DESIGNATION -  COLORA
 DN6214  PID         -  DN6214
 DN6214  STATE/COUNTY-  MD/CECIL
 DN6214  COUNTRY     -  US
 DN6214  USGS QUAD   -  RISING SUN (2016)
 DN6214
 DN6214                         *CURRENT SURVEY CONTROL
 DN6214  ______________________________________________________________________
 DN6214* NAD 83(2011) POSITION- 39 40 22.06272(N) 076 05 36.69920(W)   ADJUSTED
 DN6214* NAD 83(2011) ELLIP HT-    78.452 (meters)        (06/27/12)   ADJUSTED
 DN6214* NAD 83(2011) EPOCH   -  2010.00
 DN6214* NAVD 88 ORTHO HEIGHT -   111.42  (meters)      365.6   (feet) GPS OBS
 DN6214  ______________________________________________________________________
 DN6214  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6214  GEOID HEIGHT    -        -32.941 (meters)                     GEOID03
 DN6214  GEOID HEIGHT    -        -32.965 (meters)                     GEOID18
 DN6214  NAD 83(2011) X  -  1,181,509.953 (meters)                     COMP
 DN6214  NAD 83(2011) Y  - -4,771,948.476 (meters)                     COMP
 DN6214  NAD 83(2011) Z  -  4,050,138.705 (meters)                     COMP
 DN6214  LAPLACE CORR    -         -1.16  (seconds)                    DEFLEC18
 DN6214
 DN6214  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6214  Standards:
 DN6214         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6214            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6214  -------------------------------------------------------------------
 DN6214  NETWORK    0.60   1.25           0.27   0.21   0.64      0.00903754
 DN6214  -------------------------------------------------------------------
 DN6214  Click here for local accuracies and other accuracy information.
 DN6214
 DN6214.The horizontal coordinates were established by GPS observations
 DN6214.and adjusted by the National Geodetic Survey in June 2012.
 DN6214
 DN6214.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6214.been affixed to the stable North American tectonic plate. See 
 DN6214.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6214
 DN6214.The horizontal coordinates are valid at the epoch date displayed above
 DN6214.which is a decimal equivalence of Year/Month/Day.
 DN6214
 DN6214.The orthometric height was determined by GPS observations and a
 DN6214.high-resolution geoid model using precise GPS observation and
 DN6214.processing techniques.
 DN6214
 DN6214.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6214.GEOID18 height accuracy estimate available here.
 DN6214
 DN6214.Click photographs - Photos may exist for this station.
 DN6214
 DN6214.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6214
 DN6214.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6214
 DN6214.The ellipsoidal height was determined by GPS observations
 DN6214.and is referenced to NAD 83.
 DN6214
 DN6214. The following values were computed from the NAD 83(2011) position.
 DN6214
 DN6214;                    North         East     Units Scale Factor Converg.
 DN6214;SPC MD       -   223,086.470   477,777.722   MT  1.00004658   +0 34 08.2
 DN6214;SPC MD       -   731,909.53  1,567,509.08   sFT  1.00004658   +0 34 08.2
 DN6214;UTM  18      - 4,392,013.126   406,211.750   MT  0.99970829   -0 41 53.4
 DN6214
 DN6214!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6214!SPC MD       -   0.99998769  x   1.00004658  =   1.00003427
 DN6214!UTM  18      -   0.99998769  x   0.99970829  =   0.99969599
 DN6214
 DN6214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0621192013(NAD 83)
 DN6214
 DN6214                          SUPERSEDED SURVEY CONTROL
 DN6214
 DN6214  NAD 83(2007)-  39 40 22.06279(N)    076 05 36.70004(W) AD(2002.00) 1
 DN6214  ELLIP H (02/23/12)   78.478  (m)                       GP(2002.00) 4 1
 DN6214
 DN6214.Superseded values are not recommended for survey control.
 DN6214
 DN6214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6214.See file dsdata.pdf to determine how the superseded data were derived.
 DN6214
 DN6214_MARKER: DD = SURVEY DISK
 DN6214_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6214_STAMPING: COLORA 2008
 DN6214_MARK LOGO: MD-015
 DN6214_PROJECTION: FLUSH
 DN6214_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6214_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6214+STABILITY: SURFACE MOTION
 DN6214_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6214+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6214
 DN6214  HISTORY     - Date     Condition        Report By
 DN6214  HISTORY     - 20081204 MONUMENTED       GWS
 DN6214  HISTORY     - 20250917 GOOD             PROFLN
 DN6214
 DN6214                          STATION DESCRIPTION
 DN6214
 DN6214'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6214'THE STATION IS LOCATED IN 2.4 MI (3.9 KM) SOUTHWESTERLY OF RISING SUN.
 DN6214'TO REACH THE STATION FROM THE JUNCTION OF JACOB TOME MEMORIAL HIGHWAY
 DN6214'(ROUTE 276) AND LIBERTY GROVE ROAD (ROUTE 269), PROCEED WEST ON
 DN6214'LIBERTY GROVE ROAD FOR 1.06 MI (1.7 KM) TO THE STATION ON THE RIGHT,
 DN6214'JUST PAST SWEET POTATO LANE.
 DN6214'
 DN6214'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6214'CONCRETE MONUMENT 19.4 FT (5.9 M) WEST OF THE CENTERLINE OF SWEET
 DN6214'POTATO LANE, 34.2 FT (10.4 M) NORTH OF THE CENTERLINE OF LIBERTY GROVE
 DN6214'ROAD AND 56.2 FT (17.1 M) EAST OF THE SOUTHEAST CORNER OF THE WELCOME
 DN6214'TO COLORA STONE SIGN.
 DN6214
 DN6214                          STATION RECOVERY (2025)
 DN6214
 DN6214'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6214'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2017 ***********************************************************************
 HU2017  DESIGNATION -  COLUMBIA
 HU2017  PID         -  HU2017
 HU2017  STATE/COUNTY-  MD/WICOMICO
 HU2017  COUNTRY     -  US
 HU2017  USGS QUAD   -  SHARPTOWN (2016)
 HU2017
 HU2017                         *CURRENT SURVEY CONTROL
 HU2017  ______________________________________________________________________
 HU2017* NAD 83(1991) POSITION- 38 30 12.84939(N) 075 41 50.51414(W)   ADJUSTED
 HU2017* NAVD 88 ORTHO HEIGHT -    10.9   (meters)       36.    (feet) VERTCON3
 HU2017  ______________________________________________________________________
 HU2017  GEOID HEIGHT    -        -35.607 (meters)                     GEOID18
 HU2017  LAPLACE CORR    -         -1.81  (seconds)                    DEFLEC18
 HU2017  HORZ ORDER      -  SECOND
 HU2017
 HU2017.The horizontal coordinates were established by classical geodetic methods
 HU2017.and adjusted by the National Geodetic Survey in January 1992.
 HU2017
 HU2017.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2017.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2017
 HU2017.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2017.GEOID18 height accuracy estimate available here.
 HU2017
 HU2017.Click photographs - Photos may exist for this station.
 HU2017
 HU2017.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2017
 HU2017. The following values were computed from the NAD 83(1991) position.
 HU2017
 HU2017;                    North         East     Units Scale Factor Converg.
 HU2017;SPC MD       -    93,710.182   513,619.672   MT  0.99997083   +0 49 03.3
 HU2017;SPC MD       -   307,447.49  1,685,100.54   sFT  0.99997083   +0 49 03.3
 HU2017;UTM  18      - 4,261,919.862   439,193.911   MT  0.99964553   -0 26 03.0
 HU2017
 HU2017!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2017!SPC MD       -   1.00000388  x   0.99997083  =   0.99997471
 HU2017!UTM  18      -   1.00000388  x   0.99964553  =   0.99964941
 HU2017
 HU2017:                Primary Azimuth Mark                     Grid Az
 HU2017:SPC MD       -  COOPER RM 4                              093 26 51.7
 HU2017:UTM  18      -  COOPER RM 4                              094 41 58.0
 HU2017
 HU2017_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3919361919(NAD 83)
 HU2017
 HU2017|---------------------------------------------------------------------|
 HU2017| PID    Reference Object                     Distance      Geod. Az  |
 HU2017|                                                           dddmmss.s |
 HU2017| HU2016 BOUNDARY MONUMENT 3 DE MD            25.344 METERS 08552     |
 HU2017| HU1826 COOPER RM 4                         APPROX. 5.3 KM 0941555.0 |
 HU2017| HU1825 MD DEL CORNER RM 4                  APPROX. 4.8 KM 1761657.7 |
 HU2017| HU1801 HEBRON TANK                         APPROX. 9.5 KM 1764410.2 |
 HU2017| DC7945 COLUMBIA RM 1                        24.899 METERS 19546     |
 HU2017| DC7947 COLUMBIA RM 3                        61.240 METERS 21749     |
 HU2017| DC7946 COLUMBIA RM 2                        24.789 METERS 29626     |
 HU2017| HU2029 SHARPTOWN MUNICIPAL WATER TK        APPROX. 4.2 KM 3362600.4 |
 HU2017|---------------------------------------------------------------------|
 HU2017
 HU2017                          SUPERSEDED SURVEY CONTROL
 HU2017
 HU2017  NAD 83(1986)-  38 30 12.84464(N)    075 41 50.53546(W) AD(       ) 2
 HU2017  NAD 27      -  38 30 12.43120(N)    075 41 51.77830(W) AD(       ) 2
 HU2017  NGVD 29 (07/19/86)   11.1    (m)           36.     (f) VERT ANG       
 HU2017
 HU2017.Superseded values are not recommended for survey control.
 HU2017
 HU2017.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2017.See file dsdata.pdf to determine how the superseded data were derived.
 HU2017
 HU2017_MARKER: DS = TRIANGULATION STATION DISK
 HU2017_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2017_STAMPING: COLUMBIA 1962
 HU2017_MARK LOGO: CGS
 HU2017_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2017+STABILITY: SURFACE MOTION
 HU2017_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2017+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2008
 HU2017
 HU2017  HISTORY     - Date     Condition        Report By
 HU2017  HISTORY     - 1962     MONUMENTED       CGS
 HU2017  HISTORY     - 20080519 GOOD             GEOCAC
 HU2017
 HU2017                          STATION DESCRIPTION
 HU2017
 HU2017'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU2017'THE STATION IS LOCATED ABOUT 7-1/2 MILES SOUTHWEST OF LAUREL,
 HU2017'DELAWARE, 4-1/2 MILES NORTH-NORTHWEST OF GALESTOWN, MARYLAND, 3.0
 HU2017'MILES SOUTH-SOUTHEAST OF SHARPTOWN, MARYLAND AND ON PROPERTY OWNED
 HU2017'BY MR. E. O. WHEATLEY AT 407 ANNE STREET IN SALISBURY, MARYLAND
 HU2017'HIS PHONE NUMBER IS PI 2-1111 WHO GAVE PERMISSION.
 HU2017'
 HU2017'TO REACH THE STATION FROM THE CROSSROADS IN SHARPTOWN, MARYLAND GO
 HU2017'SOUTHEASTERLY ON STATE HIGHWAY 348 FOR 1.7 MILES TO THE
 HU2017'MARYLAND-DELAWARE STATE LINE, CONTINUE EAST ON DELAWARE STATE
 HU2017'HIGHWAY 24 FOR 1.0 MILE TO A CROSSROAD, TURN RIGHT AND GO
 HU2017'SOUTHERLY ON PAVED ROAD FOR 1.5 MILES TO A CROSSROAD AT THE
 HU2017'COLUMBIA CHURCH AND STORE, TURN RIGHT AND GO WESTERLY ON ASPHALT
 HU2017'ROAD FOR 1.0 MILE TO A FORK AND DELAWARE-MARYLAND STATE LINE,
 HU2017'TURN RIGHT AND GO NORTHWEST ON DIRT ROAD FOR 0.2 MILE TO A
 HU2017'FORK, TAKE RIGHT FORK AND GO NORTHWESTERLY ON DIRT ROAD FOR 0.2
 HU2017'MILE TO A CROSSROAD, TURN RIGHT AND GO EAST ON DIRT ROAD FOR 0.2
 HU2017'MILE TO THE FARM HOUSE OF MR. NAYMON BROWN HOUSE, CONTINUE AROUND
 HU2017'THE LEFT SIDE OF THE HOUSE FOR 0.15 MILE TO A DIM WOODS ROAD
 HU2017'RIGHT, TURN RIGHT AND FOLLOW WOODS ROAD FOR 160 PACES TO
 HU2017'REFERENCE MARK 3, HERE PACK NORTH EAST FOR 200.916 FEET TO THE
 HU2017'STATION.
 HU2017'
 HU2017'STATION IS A STANDARD DISK SET IN THE TOP OF 10 X 10 INCH CONCRETE
 HU2017'MONUMENT WHICH PROJECTS ABOUT 2 INCHES ABOVE THE SURFACE OF THE
 HU2017'GROUND, STAMPED COLUMBIA 1962.  THERE WAS NOT A UNDERGROUND MARK
 HU2017'SET AT THIS STATION DUE TO WATER IN THE MARK HOLE.  IT IS 24.6 FEET
 HU2017'SOUTHEAST OF A 10-INCH PINE TREE AND 2.5 FEET SOUTHWEST OF A
 HU2017'STANDARD METAL WITNESS POST AND MARKER.
 HU2017'
 HU2017'REFERENCE MARK 1 IS A STANDARD DISK SET IN THE TOP OF A 10 X 10
 HU2017'INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 4 INCHES ABOVE THE
 HU2017'SURFACE OF THE GROUND, STAMPED COLUMBIA NO 1 1962.  IT IS 83.9
 HU2017'FEET SOUTH OF A STANDARD METAL WITNESS POST AND MARKER AND 4.0
 HU2017'FEET WEST OF A 8-INCH OAK TREE.
 HU2017'
 HU2017'REFERENCE MARK 2 IS A STANDARD DISK SET IN THE TOP OF A 10 X 10
 HU2017'INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 3 INCHES ABOVE THE
 HU2017'SURFACE OF THE GROUND, STAMPED COLUMBIA NO 2 1962.  IT IS 81.8
 HU2017'FEET WEST-NORTHWEST OF A STANDARD METAL WITNESS POST AND MARKER,
 HU2017'17.0 FEET NORTH OF A 10-INCH PINE TREE AND 7.0 FEET EAST OF A
 HU2017'8-INCH OAK TREE.
 HU2017'
 HU2017'REFERENCE MARK 3 IS A STANDARD DISK SET IN THE TOP OF A 10 X 10
 HU2017'INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 3 INCHES ABOVE THE
 HU2017'SURFACE OF THE GROUND, STAMPED COLUMBIA NO 3 1962.  IT IS 15.5
 HU2017'FEET SOUTH OF A TRACK ROAD AND 1.4 FEET NORTH OF A STANDARD METAL
 HU2017'WITNESS POST AND MARKER.
 HU2017'
 HU2017'BOUNDARY MONUMENT 3 IS A 12 X 12 INCH SQUARE GRANITE STONE WHICH
 HU2017'PROJECTS ABOUT 24 INCHES ABOVE THE SURFACE OF THE GROUND.  IT HAS
 HU2017'THE LETTER M ON THE WEST SIDE OF THE MONUMENT AND THE LETTER P ON
 HU2017'THE EAST SIDE.  IT IS LEANING TO THE SOUTH A LITTLE.  IT WAS
 HU2017'TRAVERSED TO A CROSS WAS INSCRIBED ON THE TOP.  IT IS 81.2 FEET
 HU2017'EAST OF A STANDARD METAL WITNESS POST AND MARKER, 7.8 FEET NORTH
 HU2017'OF A 10-INCH OAK TREE AND 6.5 FEET SOUTH OF A 16-INCH OAK TREE.
 HU2017'
 HU2017'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HU2017
 HU2017                          STATION RECOVERY (2008)
 HU2017
 HU2017'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 HU2017'FOUND THE STATION, REFERENCE MARK NO. 2 AND REFERENCE MARK NO. 3.  DID
 HU2017'NOT FIND REFERENCE MARK NO. 1.  THE STATION IS LOCATED IN A RECENTLY
 HU2017'LOGGED AREA, ABOUT 18 FEET EAST OF A LOGGING ROAD AND 83 FEET WEST OF
 HU2017'BOUNDARY MONUMENT 3.  TO REACH FROM THE INTERSECTION OF
 HU2017'US HIGHWAY 50 WITH MARYLAND STATE HIGHWAY 54 NEAR MARDELA SPRINGS,
 HU2017'MARYLAND, GO EAST ON STATE HIGHWAY 54 FOR ABOUT 2.4 MILES TO THE
 HU2017'INTERSECTION WITH NORRIS TWILLEY ROAD.  TURN LEFT AND GO NORTHERLY ON
 HU2017'NORRIS TWILLEY ROAD FOR ABOUT 2.3 MILES TO THE INTERSECTION WITH
 HU2017'CROSS ROAD.  TURN RIGHT AND GO EAST ON CROSS ROAD FOR ABOUT 0.5 MILES
 HU2017'TO THE STATE BOUNDARY LINE.  CONTINUE EAST, NOW ON DELAWARE ROAD 507,
 HU2017'FOR ABOUT 0.10 MILES TO A GRAVEL DRIVE LEADING NORTH TO AN EQUIPMENT
 HU2017'SHED.  FROM THE SHED, PACK NORTH ACROSS A CORN FIELD FOR ABOUT 625
 HU2017'FEET TO AN EAST-WEST DRAINAGE DITCH.  PACK WEST ALONG THE DITCH TO A
 HU2017'BOARD BRIDGE.  CROSS THE BRIDGE AND PACK NORTH FOR ABOUT 450 FEET TO
 HU2017'THE NORTHWEST CORNER OF THE FIELD.  CONTINUE NORTH, NOW ON A DIM TRACK
 HU2017'ROAD, THROUGH THE TIMBER FOR ABOUT 450 FEET TO BOUNDARY
 HU2017'MONUMENT 3 ON THE LEFT.  TURN LEFT AND PACK WEST FOR 83 FEET TO THE
 HU2017'STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5739 ***********************************************************************
 HV5739  DESIGNATION -  COMB
 HV5739  PID         -  HV5739
 HV5739  STATE/COUNTY-  MD/TALBOT
 HV5739  COUNTRY     -  US
 HV5739  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5739
 HV5739                         *CURRENT SURVEY CONTROL
 HV5739  ______________________________________________________________________
 HV5739* NAD 83(1991) POSITION- 38 45 42.17354(N) 076 09 55.50089(W)   ADJUSTED
 HV5739* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5739  ______________________________________________________________________
 HV5739  GEOID HEIGHT    -        -34.519 (meters)                     GEOID18
 HV5739  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 HV5739  HORZ ORDER      -  THIRD
 HV5739
 HV5739.The horizontal coordinates were established by classical geodetic methods
 HV5739.and adjusted by the National Geodetic Survey in January 1992.
 HV5739
 HV5739.The orthometric height was scaled from a topographic map.
 HV5739
 HV5739.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5739.GEOID18 height accuracy estimate available here.
 HV5739
 HV5739.Click photographs - Photos may exist for this station.
 HV5739
 HV5739.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5739
 HV5739. The following values were computed from the NAD 83(1991) position.
 HV5739
 HV5739;                    North         East     Units Scale Factor Converg.
 HV5739;SPC MD       -   121,886.285   472,534.291   MT  0.99995182   +0 31 25.7
 HV5739;SPC MD       -   399,888.59  1,550,306.25   sFT  0.99995182   +0 31 25.7
 HV5739;UTM  18      - 4,290,979.144   398,745.374   MT  0.99972625   -0 43 47.0
 HV5739
 HV5739!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5739!SPC MD       -   1.00000530  x   0.99995182  =   0.99995712
 HV5739!UTM  18      -   1.00000530  x   0.99972625  =   0.99973154
 HV5739
 HV5739:                Primary Azimuth Mark                     Grid Az
 HV5739:SPC MD       -  HALL                                     221 34 50.3
 HV5739:UTM  18      -  HALL                                     222 50 03.0
 HV5739
 HV5739_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9874590979(NAD 83)
 HV5739
 HV5739|---------------------------------------------------------------------|
 HV5739| PID    Reference Object                     Distance      Geod. Az  |
 HV5739|                                                           dddmmss.s |
 HV5739| HV5749 HALL                                APPROX. 1.2 KM 2220616.0 |
 HV5739|---------------------------------------------------------------------|
 HV5739
 HV5739                          SUPERSEDED SURVEY CONTROL
 HV5739
 HV5739  NAD 83(1986)-  38 45 42.16924(N)    076 09 55.51497(W) AD(       ) 3
 HV5739  NAD 27      -  38 45 41.69100(N)    076 09 56.72600(W) AD(       ) 3
 HV5739  USSD        -  38 45 42.06900(N)    076 09 56.49200(W) AD(       ) 3
 HV5739
 HV5739.Superseded values are not recommended for survey control.
 HV5739
 HV5739.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5739.See file dsdata.pdf to determine how the superseded data were derived.
 HV5739
 HV5739_MARKER: H = DRILL HOLE
 HV5739_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5739_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5739
 HV5739  HISTORY     - Date     Condition        Report By
 HV5739  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5739  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5739
 HV5739                          STATION DESCRIPTION
 HV5739
 HV5739'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5739'STATION IS ON THE SOUTHEASTERN SHORE OF MILES RIVER, ABOUT 1/8
 HV5739'MILE N OF ENTRANCE TO NEWCOMB CREEK, AND 3/4 MILE NE OF RAILROAD
 HV5739'BRIDGE ACROSS OAK CREEK, IN A CULTIVATED FIELD, ABOUT 6 FEET ABOVE
 HV5739'HIGH WATER, 35 YARDS SE OF EDGE OF BANK, 30 YARDS E OF EDGE OF
 HV5739'BANK, 45 YARDS N OF EDGE OF BANK ON RANGE WITH POINT, AND 300
 HV5739'YARDS SW OF LARGE LONE SYCAMORE TREE.  STATION MARK IS A HOLE IN
 HV5739'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV5739'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV5739'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5739'TOP OF POST.  SUB-SURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE,
 HV5739'BURIED WITH TOP 2 INCHES BELOW THE BASE OF THE MONUMENT. DISTANCES
 HV5739'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV5739'FOLLOWS--SPINDLE ON BARN CUPOLA, 1/2 MILE, S 8 DEG 6 MIN W.  LEFT
 HV5739'PEAK OF HOUSE, 1-1/8 MILES, S 73 DEG 29 MIN W.  CHIMNEY OUTSIDE OF
 HV5739'LEFT END OF FOGGS COTTAGE, 3-5/8 MILES, N 56 DEG 58 MIN W. WEATHER
 HV5739'VANE ON TOWER OF DODSON HOUSE, 4 MILES, N 41 DEG 56 MIN W. CUPOLA
 HV5739'OF BARN, 1-5/8 MILES, N 15 DEG 42 MIN W. LEFT CORNER OF HOUSE, 1
 HV5739'MILE, N 8 DEG 59 MIN E.  LARGE LONE SYCAMORE TREE, 300 YARDS, N 30
 HV5739'DEG 43 MIN E.  WINDMILL IN RANGE WITH HOUSE, 1-1/4 MILES, N 49
 HV5739'DEG 25 MIN E.  STACK OF CANNERY, 3/4 MILE, S 0 DEG 5 MIN E.
 HV5739
 HV5739                          STATION RECOVERY (1940)
 HV5739
 HV5739'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5739'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  STATION HAS
 HV5739'EVIDENTLY BEEN PLOWED OR DUG OUT AS POSITION IS IN A CULTIVATED FIELD.
 HV5739'
 HV5739'FARMER ON PLACE INTERVIEWED, BUT CLAIMS HE HAS NEVER SEEN THE
 HV5739'MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6572 ***********************************************************************
 HV6572  DESIGNATION -  COMBS 1908
 HV6572  PID         -  HV6572
 HV6572  STATE/COUNTY-  MD/ST MARYS
 HV6572  COUNTRY     -  US
 HV6572  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6572
 HV6572                         *CURRENT SURVEY CONTROL
 HV6572  ______________________________________________________________________
 HV6572* NAD 83(1993) POSITION- 38 08 17.39793(N) 076 29 23.91442(W)   ADJUSTED
 HV6572* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6572  ______________________________________________________________________
 HV6572  GEOID HEIGHT    -        -34.648 (meters)                     GEOID18
 HV6572  LAPLACE CORR    -         -5.87  (seconds)                    DEFLEC18
 HV6572  HORZ ORDER      -  THIRD
 HV6572
 HV6572.The horizontal coordinates were established by classical geodetic methods
 HV6572.and adjusted by the National Geodetic Survey in November 1994.
 HV6572
 HV6572.The orthometric height was scaled from a topographic map.
 HV6572
 HV6572.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6572.GEOID18 height accuracy estimate available here.
 HV6572
 HV6572.Click photographs - Photos may exist for this station.
 HV6572
 HV6572.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6572
 HV6572. The following values were computed from the NAD 83(1993) position.
 HV6572
 HV6572;                    North         East     Units Scale Factor Converg.
 HV6572;SPC MD       -    52,463.820   444,713.668   MT  1.00003209   +0 19 12.4
 HV6572;SPC MD       -   172,125.05  1,459,031.43   sFT  1.00003209   +0 19 12.4
 HV6572;SPC VA N     - 2,054,264.385 3,676,196.541   MT  0.99998315   +1 15 16.2
 HV6572;SPC VA N     - 6,739,699.07 12,060,988.15   sFT  0.99998315   +1 15 16.2
 HV6572;SPC VA S     - 1,202,177.890 3,676,206.583   MT  1.00003580   +1 13 11.8
 HV6572;SPC VA S     - 3,944,145.29 12,061,021.10   sFT  1.00003580   +1 13 11.8
 HV6572;UTM  18      - 4,222,193.632   369,426.356   MT  0.99980998   -0 55 13.0
 HV6572
 HV6572!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6572!SPC MD       -   1.00000548  x   1.00003209  =   1.00003757
 HV6572!SPC VA N     -   1.00000548  x   0.99998315  =   0.99998863
 HV6572!SPC VA S     -   1.00000548  x   1.00003580  =   1.00004128
 HV6572!UTM  18      -   1.00000548  x   0.99980998  =   0.99981546
 HV6572
 HV6572:                Primary Azimuth Mark                     Grid Az
 HV6572:SPC MD       -  TAYLOR 1908                              316 25 02.0
 HV6572:SPC VA N     -  TAYLOR 1908                              315 28 58.2
 HV6572:SPC VA S     -  TAYLOR 1908                              315 31 02.6
 HV6572:UTM  18      -  TAYLOR 1908                              317 39 27.4
 HV6572
 HV6572_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6942622193(NAD 83)
 HV6572
 HV6572|---------------------------------------------------------------------|
 HV6572| PID    Reference Object                     Distance      Geod. Az  |
 HV6572|                                                           dddmmss.s |
 HV6572| HV6570 TAYLOR 1908                         APPROX. 0.5 KM 3164414.4 |
 HV6572|---------------------------------------------------------------------|
 HV6572
 HV6572                          SUPERSEDED SURVEY CONTROL
 HV6572
 HV6572  NAD 83(1991)-  38 08 17.39684(N)    076 29 23.91763(W) AD(       ) 3
 HV6572  NAD 83(1986)-  38 08 17.39806(N)    076 29 23.93060(W) AD(       ) 3
 HV6572  NAD 27      -  38 08 16.99300(N)    076 29 25.17800(W) AD(       ) 3
 HV6572  USSD        -  38 08 17.37800(N)    076 29 24.89100(W) AD(       ) 3
 HV6572
 HV6572.Superseded values are not recommended for survey control.
 HV6572
 HV6572.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6572.See file dsdata.pdf to determine how the superseded data were derived.
 HV6572
 HV6572_MARKER: DS = TRIANGULATION STATION DISK
 HV6572_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6572_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6572
 HV6572  HISTORY     - Date     Condition        Report By
 HV6572  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6572  HISTORY     - 1919     GOOD             CGS
 HV6572  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6572  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6572
 HV6572                          STATION DESCRIPTION
 HV6572
 HV6572'DESCRIBED BY COAST AND GEODETIC SURVEY 1919
 HV6572'STATION IS ON THE NORTHEASTERN SIDE OF ST. GEORGE RIVER, ON A
 HV6572'MARSHY ISLAND ABOUT 1/8 MILE OFFSHORE FROM THE POINT ON COMBS
 HV6572'PLACE AND 1/2 MILE E OF ST. GEORGE ISLAND STRAITS.  IT IS ON
 HV6572'MARSHLAND ABOUT LEVEL WITH HIGH WATER, 7 METERS N OF EXTREME
 HV6572'S POINT, 7 METERS E OF W SHORE, AND 40 METERS ESE OF ANOTHER
 HV6572'POINT.
 HV6572'
 HV6572'STATION MARKED BY A STANDARD BRONZE DISK STAMPED COMBS SET IN
 HV6572'THE TOP OF A TILE SURROUNDED BY A MASS OF CONCRETE.
 HV6572'
 HV6572'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6572'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6572'POST 2 FEET LONG, ABOUT 6 INCHES ABOVE SURFACE OF GROUND.  THE
 HV6572'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6572'POST.  IT IS 13.87 METERS (45.5 FEET) FROM STATION
 HV6572'N 01 DEG 13 MIN W.  DISTANCES AND BEARINGS TO OTHER POINTS OF
 HV6572'REFERENCE ARE AS FOLLOWS--CHIMNEY ON RIGHT END OF SWAN HOTEL,
 HV6572'5/8 MILE, N 80 DEG 07 MIN W.  RIGHT PEAK OF GRAVES HOTEL, 3/4
 HV6572'MILE, N 78 DEG 38 MIN W.  LEFT CHIMNEY OF ROBRECHT HOUSE, 7/8
 HV6572'MILE, N 62 DEG 00 MIN W.  LEFT CEDAR ON MOORE ISLAND, 3/8
 HV6572'MILE, N 55 DEG 12 MIN W.  CEDAR TREE, 3/8 MILE N 43 DEG 27 MIN W.
 HV6572'CHIMNEY OF TAYLOR HOUSE, 1/4 MILE, N 38 DEG 54 MIN W.
 HV6572'LIGHTNING ROD ON LINE WITH CHIMNEY, 1/4 MILE, N 62 DEG 48 MIN E.
 HV6572'PAVILION ON WHARF, 5/8 MILE, S 04 DEG 05 MIN E.
 HV6572
 HV6572                          STATION RECOVERY (1942)
 HV6572
 HV6572'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6572'THIS STATION WAS THOROUGHLY SEACHED FOR BY TWO MEN FOR 1-1/2 HOURS,
 HV6572'BUT NO TRACE OF IT COULD BE FOUND.  IT IS RECOMMENDED THAT THIS
 HV6572'STATION BE CLASSIFIED AS LOST.
 HV6572
 HV6572                          STATION RECOVERY (1958)
 HV6572
 HV6572'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6572'A THOROUGH, ONE HOUR SEARCH BY TWO MEM WAS MADE FOR THIS REFERENCE
 HV6572'MARK WITHOUT RESULTS.  STATION SHOULD CONTINUE TO BE LISTED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4709 ***********************************************************************
 AB4709  DESIGNATION -  COMFORT
 AB4709  PID         -  AB4709
 AB4709  STATE/COUNTY-  MD/CARROLL
 AB4709  COUNTRY     -  US
 AB4709  USGS QUAD   -  NEW WINDSOR (2016)
 AB4709
 AB4709                         *CURRENT SURVEY CONTROL
 AB4709  ______________________________________________________________________
 AB4709* NAD 83(2011) POSITION- 39 35 14.47383(N) 077 00 42.22286(W)   ADJUSTED
 AB4709* NAD 83(2011) ELLIP HT-   196.255 (meters)        (06/27/12)   ADJUSTED
 AB4709* NAD 83(2011) EPOCH   -  2010.00
 AB4709* NAVD 88 ORTHO HEIGHT -   228.6   (meters)      750.    (feet) GPS OBS
 AB4709  ______________________________________________________________________
 AB4709  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4709  GEOID HEIGHT    -        -32.320 (meters)                     GEOID99
 AB4709  GEOID HEIGHT    -        -32.308 (meters)                     GEOID18
 AB4709  NAD 83(2011) X  -  1,106,268.342 (meters)                     COMP
 AB4709  NAD 83(2011) Y  - -4,796,253.747 (meters)                     COMP
 AB4709  NAD 83(2011) Z  -  4,042,907.508 (meters)                     COMP
 AB4709  LAPLACE CORR    -          4.11  (seconds)                    DEFLEC18
 AB4709
 AB4709  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4709  Standards:
 AB4709         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4709            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4709  -------------------------------------------------------------------
 AB4709  NETWORK    1.14   3.12           0.50   0.43   1.59      0.07273694
 AB4709  -------------------------------------------------------------------
 AB4709  Click here for local accuracies and other accuracy information.
 AB4709
 AB4709.The horizontal coordinates were established by GPS observations
 AB4709.and adjusted by the National Geodetic Survey in June 2012.
 AB4709
 AB4709.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4709.been affixed to the stable North American tectonic plate. See 
 AB4709.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4709
 AB4709.The horizontal coordinates are valid at the epoch date displayed above
 AB4709.which is a decimal equivalence of Year/Month/Day.
 AB4709
 AB4709.The orthometric height was determined by GPS observations and a
 AB4709.high-resolution geoid model.
 AB4709
 AB4709.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4709.GEOID18 height accuracy estimate available here.
 AB4709
 AB4709.Click photographs - Photos may exist for this station.
 AB4709
 AB4709.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4709
 AB4709.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4709
 AB4709.The ellipsoidal height was determined by GPS observations
 AB4709.and is referenced to NAD 83.
 AB4709
 AB4709. The following values were computed from the NAD 83(2011) position.
 AB4709
 AB4709;                    North         East     Units Scale Factor Converg.
 AB4709;SPC MD       -   213,213.685   398,992.422   MT  1.00002692   -0 00 26.5
 AB4709;SPC MD       -   699,518.56  1,309,027.64   sFT  1.00002692   -0 00 26.5
 AB4709;UTM  18      - 4,383,892.299   327,243.532   MT  0.99996745   -1 16 56.3
 AB4709
 AB4709!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4709!SPC MD       -   0.99996921  x   1.00002692  =   0.99999613
 AB4709!UTM  18      -   0.99996921  x   0.99996745  =   0.99993666
 AB4709
 AB4709_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2724383892(NAD 83)
 AB4709
 AB4709|---------------------------------------------------------------------|
 AB4709| PID    Reference Object                     Distance      Geod. Az  |
 AB4709|                                                           dddmmss.s |
 AB4709| AB4695 COMFORT AZ MK                       384.628 METERS 25829     |
 AB4709|---------------------------------------------------------------------|
 AB4709
 AB4709                          SUPERSEDED SURVEY CONTROL
 AB4709
 AB4709  NAD 83(2007)-  39 35 14.47412(N)    077 00 42.22359(W) AD(2002.00) 0
 AB4709  ELLIP H (02/10/07)  196.276  (m)                       GP(2002.00)    
 AB4709  ELLIP H (08/30/02)  196.272  (m)                       GP(       ) 4 2
 AB4709  NAD 83(1991)-  39 35 14.47362(N)    077 00 42.22417(W) AD(       ) 1
 AB4709  ELLIP H (07/03/96)  196.204  (m)                       GP(       ) 1 1
 AB4709  NAVD 88 (07/03/96)  228.6    (m)  GEOID93  model used  GPS OBS        
 AB4709
 AB4709.Superseded values are not recommended for survey control.
 AB4709
 AB4709.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4709.See file dsdata.pdf to determine how the superseded data were derived.
 AB4709
 AB4709_MARKER: DD = SURVEY DISK
 AB4709_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4709_STAMPING: COMFORT 1995
 AB4709_MARK LOGO: MD-013
 AB4709_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4709_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4709+STABILITY: SURFACE MOTION
 AB4709_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4709+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4709
 AB4709  HISTORY     - Date     Condition        Report By
 AB4709  HISTORY     - 1995     MONUMENTED       MD-013
 AB4709
 AB4709                          STATION DESCRIPTION
 AB4709
 AB4709'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4709'STATION IS LOCATED IN WESTMINSTER ON THE GROUNDS OF THE COMFORT INN
 AB4709'HOTEL. TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 140
 AB4709'(TANEYTOWN PIKE) AND MD ROUTE 32 (MAIN STREET) AT WESTMINSTER GO WEST
 AB4709'ON MD ROUTE 140 FOR 0.2 MI (0.3 KM) TO THE ENTRANCE OF THE COMFORT INN
 AB4709'HOTEL AND THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF
 AB4709'A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AB4709'45.5 FT (13.9 M) SOUTH OF THE CENTERLINE OF MD ROUTE 140, 62.5 FT
 AB4709'(19.1 M) EAST OF THE CENTERLINE OF THE ENTRANCE ROAD, 81.0 FT (24.7 M)
 AB4709'WEST OF POWER POLE NO.325006, 46.5 FT (14.2 M) NORTHWEST OF A 4 IN
 AB4709'TREE, 10.0 FT (3.0 M) NORTH OF THE NORTHWEST CORNER OF A PARKING LOT
 AB4709'AND 22.5 FT (6.9 M) NORTH OF A 4 IN TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4695 ***********************************************************************
 AB4695  DESIGNATION -  COMFORT AZ MK
 AB4695  PID         -  AB4695
 AB4695  STATE/COUNTY-  MD/CARROLL
 AB4695  COUNTRY     -  US
 AB4695  USGS QUAD   -  NEW WINDSOR (2016)
 AB4695
 AB4695                         *CURRENT SURVEY CONTROL
 AB4695  ______________________________________________________________________
 AB4695* NAD 83(2011) POSITION- 39 35 11.98315(N) 077 00 58.01647(W)   ADJUSTED
 AB4695* NAD 83(2011) ELLIP HT-   187.252 (meters)        (06/27/12)   ADJUSTED
 AB4695* NAD 83(2011) EPOCH   -  2010.00
 AB4695* NAVD 88 ORTHO HEIGHT -   219.439 (meters)      719.94  (feet) ADJUSTED
 AB4695  ______________________________________________________________________
 AB4695  GEOID HEIGHT    -        -32.315 (meters)                     GEOID18
 AB4695  NAD 83(2011) X  -  1,105,910.531 (meters)                     COMP
 AB4695  NAD 83(2011) Y  - -4,796,379.379 (meters)                     COMP
 AB4695  NAD 83(2011) Z  -  4,042,842.571 (meters)                     COMP
 AB4695  LAPLACE CORR    -          4.25  (seconds)                    DEFLEC18
 AB4695  DYNAMIC HEIGHT  -        219.325 (meters)      719.57  (feet) COMP
 AB4695  MODELED GRAVITY -    980,100.3   (mgal)                       NAVD 88
 AB4695
 AB4695  VERT ORDER      -  SECOND    CLASS II
 AB4695
 AB4695  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4695  Standards:
 AB4695         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4695            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4695  -------------------------------------------------------------------
 AB4695  NETWORK    1.12   2.92           0.50   0.41   1.49      0.00958073
 AB4695  -------------------------------------------------------------------
 AB4695  Click here for local accuracies and other accuracy information.
 AB4695
 AB4695.The horizontal coordinates were established by GPS observations
 AB4695.and adjusted by the National Geodetic Survey in June 2012.
 AB4695
 AB4695.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4695.been affixed to the stable North American tectonic plate. See 
 AB4695.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4695
 AB4695.The horizontal coordinates are valid at the epoch date displayed above
 AB4695.which is a decimal equivalence of Year/Month/Day.
 AB4695
 AB4695.The orthometric height was determined by differential leveling and
 AB4695.adjusted by the NATIONAL GEODETIC SURVEY
 AB4695.in June 2012.
 AB4695
 AB4695.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4695.GEOID18 height accuracy estimate available here.
 AB4695
 AB4695.Click photographs - Photos may exist for this station.
 AB4695
 AB4695.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4695
 AB4695.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4695
 AB4695.The ellipsoidal height was determined by GPS observations
 AB4695.and is referenced to NAD 83.
 AB4695
 AB4695.The dynamic height is computed by dividing the NAVD 88
 AB4695.geopotential number by the normal gravity value computed on the
 AB4695.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB4695.degrees latitude (g = 980.6199 gals.).
 AB4695
 AB4695.The modeled gravity was interpolated from observed gravity values.
 AB4695
 AB4695. The following values were computed from the NAD 83(2011) position.
 AB4695
 AB4695;                    North         East     Units Scale Factor Converg.
 AB4695;SPC MD       -   213,136.926   398,615.521   MT  1.00002677   -0 00 36.4
 AB4695;SPC MD       -   699,266.73  1,307,791.09   sFT  1.00002677   -0 00 36.4
 AB4695;UTM  18      - 4,383,823.949   326,865.038   MT  0.99996907   -1 17 06.3
 AB4695
 AB4695!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4695!SPC MD       -   0.99997062  x   1.00002677  =   0.99999739
 AB4695!UTM  18      -   0.99997062  x   0.99996907  =   0.99993969
 AB4695
 AB4695_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2686583823(NAD 83)
 AB4695
 AB4695|---------------------------------------------------------------------|
 AB4695| PID    Reference Object                     Distance      Geod. Az  |
 AB4695|                                                           dddmmss.s |
 AB4695| AB4709 COMFORT                             384.628 METERS 07829     |
 AB4695|---------------------------------------------------------------------|
 AB4695
 AB4695                          SUPERSEDED SURVEY CONTROL
 AB4695
 AB4695  NAD 83(2007)-  39 35 11.98344(N)    077 00 58.01719(W) AD(2002.00) 0
 AB4695  ELLIP H (02/10/07)  187.273  (m)                       GP(2002.00)    
 AB4695  ELLIP H (08/30/02)  187.269  (m)                       GP(       ) 4 2
 AB4695  NAD 83(1991)-  39 35 11.98292(N)    077 00 58.01776(W) AD(       ) 1
 AB4695  ELLIP H (07/03/96)  187.202  (m)                       GP(       ) 1 1
 AB4695  NAVD 88 (11/26/01)  219.6    (m)  GEOID99  model used  GPS OBS        
 AB4695  NAVD 88 (07/03/96)  219.6    (m)  GEOID93  model used  GPS OBS        
 AB4695
 AB4695.Superseded values are not recommended for survey control.
 AB4695
 AB4695.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4695.See file dsdata.pdf to determine how the superseded data were derived.
 AB4695
 AB4695_MARKER: DD = SURVEY DISK
 AB4695_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4695_STAMPING: COMFORT AZI 1995
 AB4695_MARK LOGO: MD-013
 AB4695_PROJECTION: FLUSH
 AB4695_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4695_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4695+STABILITY: SURFACE MOTION
 AB4695_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4695+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2017
 AB4695
 AB4695  HISTORY     - Date     Condition        Report By
 AB4695  HISTORY     - 1995     MONUMENTED       MD-013
 AB4695  HISTORY     - 20080901 GOOD             GEOCAC
 AB4695  HISTORY     - 20090407 GOOD             MDSHA
 AB4695  HISTORY     - 20140510 GOOD             RODCON
 AB4695  HISTORY     - 20170731 GOOD             NGS
 AB4695
 AB4695                          STATION DESCRIPTION
 AB4695
 AB4695'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4695'STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) NORTHWEST OF THE CENTER OF
 AB4695'WESTMINSTER AT THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND
 AB4695'MD ROUTE 32 (MAIN STREET) IN WESTMINSTER. STATION MARK IS SET IN THE
 AB4695'TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 AB4695'IT IS LOCATED IN A GRASS ISLAND ON THE SOUTH SIDE OF MD ROUTE 140 AND
 AB4695'ON THE NORTHEAST SIDE OF MD ROUTE 32. IT IS 32.0 FT (9.8 M) NORTHEAST
 AB4695'OF THE CENTERLINE OF MD ROUTE 32, 69.0 FT (21.0 M) NORTHEAST OF POWER
 AB4695'POLE NO.150032, 17.3 FT (5.3 M) SOUTHEAST OF A WATER VALVE, 30.5 FT
 AB4695'(9.3 M) SOUTH OF THE CENTERLINE OF MD ROUTE 140 AND 55.0 FT (16.8 M)
 AB4695'WEST OF THE CENTERLINE OF THE NORTH SPUR OF MD ROUTE 32.
 AB4695
 AB4695                          STATION RECOVERY (2008)
 AB4695
 AB4695'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 AB4695'RECOVERED IN GOOD CONDITION.
 AB4695
 AB4695                          STATION RECOVERY (2009)
 AB4695
 AB4695'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 AB4695'TO REACH THE MARK FROM THE INTERSECTION OF MD ROUTE 140 AND MD ROUTE
 AB4695'31 PROCEED NORTHWEST ON MD 140 FOR 0.5 MI (0.8 KM) TO THE MARK ON THE
 AB4695'LEFT.
 AB4695'
 AB4695'THE MARK IS 120.5 FT (36.7 M) FROM A NEW BGE POLE NUMBERED 325014 AND
 AB4695'3.5 FT (1.1 M) SOUTHWEST OF A CARSONITE POST.
 AB4695
 AB4695                          STATION RECOVERY (2014)
 AB4695
 AB4695'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AB4695'RECOVERED IN GOOD CONDITION.
 AB4695
 AB4695                          STATION RECOVERY (2017)
 AB4695
 AB4695'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 AB4695'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5872 ***********************************************************************
 HV5872  DESIGNATION -  COMMAND MSFC 1909
 HV5872  PID         -  HV5872
 HV5872  STATE/COUNTY-  MD/DORCHESTER
 HV5872  COUNTRY     -  US
 HV5872  USGS QUAD   -  CAMBRIDGE (2016)
 HV5872
 HV5872                         *CURRENT SURVEY CONTROL
 HV5872  ______________________________________________________________________
 HV5872* NAD 83(1991) POSITION- 38 35 34.02962(N) 076 05 22.53139(W)   ADJUSTED
 HV5872* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV5872  ______________________________________________________________________
 HV5872  GEOID HEIGHT    -        -34.968 (meters)                     GEOID18
 HV5872  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 HV5872  HORZ ORDER      -  THIRD
 HV5872
 HV5872.The horizontal coordinates were established by classical geodetic methods
 HV5872.and adjusted by the National Geodetic Survey in January 1992.
 HV5872
 HV5872.The orthometric height was scaled from a topographic map.
 HV5872
 HV5872.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5872.GEOID18 height accuracy estimate available here.
 HV5872
 HV5872.Click photographs - Photos may exist for this station.
 HV5872
 HV5872.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5872
 HV5872. The following values were computed from the NAD 83(1991) position.
 HV5872
 HV5872;                    North         East     Units Scale Factor Converg.
 HV5872;SPC MD       -   103,198.343   479,311.088   MT  0.99996198   +0 34 17.1
 HV5872;SPC MD       -   338,576.56  1,572,539.79   sFT  0.99996198   +0 34 17.1
 HV5872;UTM  18      - 4,272,152.035   405,110.617   MT  0.99971088   -0 40 47.0
 HV5872
 HV5872!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5872!SPC MD       -   1.00000505  x   0.99996198  =   0.99996703
 HV5872!UTM  18      -   1.00000505  x   0.99971088  =   0.99971593
 HV5872
 HV5872:                Primary Azimuth Mark                     Grid Az
 HV5872:SPC MD       -  HOWARD MSFC 1909                         250 00 48.5
 HV5872:UTM  18      -  HOWARD MSFC 1909                         251 15 52.6
 HV5872
 HV5872_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0511072152(NAD 83)
 HV5872
 HV5872|---------------------------------------------------------------------|
 HV5872| PID    Reference Object                     Distance      Geod. Az  |
 HV5872|                                                           dddmmss.s |
 HV5872| HV5866 HOWARD MSFC 1909                    APPROX. 2.6 KM 2503505.6 |
 HV5872|---------------------------------------------------------------------|
 HV5872
 HV5872                          SUPERSEDED SURVEY CONTROL
 HV5872
 HV5872  NAD 83(1986)-  38 35 34.02668(N)    076 05 22.54839(W) AD(       ) 3
 HV5872  NAD 27      -  38 35 33.58800(N)    076 05 23.77500(W) AD(       ) 3
 HV5872  USSD        -  38 35 33.98400(N)    076 05 23.57800(W) AD(       ) 3
 HV5872
 HV5872.Superseded values are not recommended for survey control.
 HV5872
 HV5872.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5872.See file dsdata.pdf to determine how the superseded data were derived.
 HV5872
 HV5872_MARKER: Z = SEE DESCRIPTION
 HV5872_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5872_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5872+STABILITY: SURFACE MOTION
 HV5872
 HV5872  HISTORY     - Date     Condition        Report By
 HV5872  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5872  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV5872  HISTORY     - 1941     MARK NOT FOUND   CGS
 HV5872
 HV5872                          STATION DESCRIPTION
 HV5872
 HV5872'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5872'ON THE SOUTHERN SHORE OF CHOPTANK RIVER, ABOUT 1/2 MILE WSW OF
 HV5872'HAMBROOKS BAR BEACON AND 1-1/2 MILES NW OF CAMBRIDGE WHARF, ON A
 HV5872'MARSH POINT INSIDE OF FENCE LINE, ABOUT 2 FEET ABOVE HIGH WATER,
 HV5872'18 YARDS SE OF SHORE, 16 YARDS S OF SHORE, 25 YARDS SW OF SHORE,
 HV5872'AND 150 YARDS NW OF A BOATHOUSE.  STATION IS MARKED BY A HOLE IN
 HV5872'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5872'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5872'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5872'COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF
 HV5872'2-INCH TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF
 HV5872'THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV5872'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN FENCE POST, 10.85
 HV5872'METERS (35.6 FEET), N 44 DEG 7 MIN W.  NEAR PEAK OF LARGE
 HV5872'BUILDING, 2-1/4 MILES, N 32 DEG 55 MIN W.  NAIL IN BLAZE IN FENCE
 HV5872'POST, 11.01 METERS (36.1 FEET), N 15 DEG 28 MIN E. LEFT CHIMNEY OF
 HV5872'HOUSE WITH THREE DORMER WINDOWS, 1-7/8 MILES, N 18 DEG 48 MIN E.
 HV5872'NEAR PEAK OF KIRBY WHARF HOUSE, 1-1/2 MILES, N 37 DEG 0 MIN E.
 HV5872'NEAR PEAK OF LARGE HOUSE, 3 MILES, S 76 DEG 30 MIN E.  FLAGSTAFF
 HV5872'ON BOATHOUSE, 150 YARDS, S 46 DEG 20 MIN E.  NAIL IN BLAZE IN
 HV5872'FENCE POST, 17.23 METERS (56.5 FEET), N 81 DEG 14 MIN W. LEFT
 HV5872'CHIMNEY OF OLD HOUSE, 2-3/4 MILES, N 77 DEG 47 MIN W.
 HV5872
 HV5872                          STATION RECOVERY (1930)
 HV5872
 HV5872'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV5872'NO TRACE, SAND PILES IN EVIDENCE.
 HV5872
 HV5872                          STATION RECOVERY (1941)
 HV5872
 HV5872'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HV5872'SEARCHED FOR, BUT NOT FOUND.  THE POINT ON WHICH THE STATION WAS
 HV5872'LOCATED HAS WASHED.  THE REMAINS OF THE OLD FENCE WERE FOUND, BUT
 HV5872'IT COULD NOT BE LOCATED CLOSELY ENOUGH TO BE USED AS A REFERENCE
 HV5872'POINT.
 HV5872'
 HV5872'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS2089 ***********************************************************************
 DS2089  DESIGNATION -  COMMON
 DS2089  PID         -  DS2089
 DS2089  STATE/COUNTY-  MD/HARFORD
 DS2089  COUNTRY     -  US
 DS2089  USGS QUAD   -  ABERDEEN (2016)
 DS2089
 DS2089                         *CURRENT SURVEY CONTROL
 DS2089  ______________________________________________________________________
 DS2089* NAD 83(2011) POSITION- 39 34 37.62510(N) 076 12 18.98573(W)   ADJUSTED
 DS2089* NAD 83(2011) ELLIP HT-   100.101 (meters)        (12/12/24)   ADJUSTED
 DS2089* NAD 83(2011) EPOCH   -  2010.00
 DS2089* NAVD 88 ORTHO HEIGHT -   132.991 (meters)      436.32  (feet) ADJUSTED
 DS2089  ______________________________________________________________________
 DS2089  GEOID HEIGHT    -        -32.922 (meters)                     GEOID18
 DS2089  NAD 83(2011) X  -  1,173,820.194 (meters)                     COMP
 DS2089  NAD 83(2011) Y  - -4,780,839.403 (meters)                     COMP
 DS2089  NAD 83(2011) Z  -  4,041,970.351 (meters)                     COMP
 DS2089  LAPLACE CORR    -         -2.31  (seconds)                    DEFLEC18
 DS2089  DYNAMIC HEIGHT  -        132.926 (meters)      436.11  (feet) COMP
 DS2089  MODELED GRAVITY -    980,133.5   (mgal)                       NAVD 88
 DS2089
 DS2089  VERT ORDER      -  FIRST     CLASS II
 DS2089
 DS2089  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS2089  Standards:
 DS2089         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS2089            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS2089  -------------------------------------------------------------------
 DS2089  NETWORK    1.06   1.57           0.47   0.39   0.80     -0.07944574
 DS2089  -------------------------------------------------------------------
 DS2089  Click here for local accuracies and other accuracy information.
 DS2089
 DS2089.The horizontal coordinates were established by GPS observations
 DS2089.and adjusted by the MD DEPT OF TRANSP in December 2024.
 DS2089
 DS2089.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS2089.been affixed to the stable North American tectonic plate. See 
 DS2089.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS2089
 DS2089.The horizontal coordinates are valid at the epoch date displayed above
 DS2089.which is a decimal equivalence of Year/Month/Day.
 DS2089
 DS2089.The orthometric height was determined by differential leveling and
 DS2089.adjusted by the NATIONAL GEODETIC SURVEY
 DS2089.in September 2024.
 DS2089
 DS2089.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS2089.GEOID18 height accuracy estimate available here.
 DS2089
 DS2089.Click photographs - Photos may exist for this station.
 DS2089
 DS2089.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS2089
 DS2089.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS2089
 DS2089.The ellipsoidal height was determined by GPS observations
 DS2089.and is referenced to NAD 83.
 DS2089
 DS2089.The dynamic height is computed by dividing the NAVD 88
 DS2089.geopotential number by the normal gravity value computed on the
 DS2089.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DS2089.degrees latitude (g = 980.6199 gals.).
 DS2089
 DS2089.The modeled gravity was interpolated from observed gravity values.
 DS2089
 DS2089. The following values were computed from the NAD 83(2011) position.
 DS2089
 DS2089;                    North         East     Units Scale Factor Converg.
 DS2089;SPC MD       -   212,374.372   468,282.338   MT  1.00002471   +0 29 55.7
 DS2089;SPC MD       -   696,764.92  1,536,356.30   sFT  1.00002471   +0 29 55.7
 DS2089;UTM  18      - 4,381,516.909   396,484.905   MT  0.99973192   -0 46 04.7
 DS2089
 DS2089!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS2089!SPC MD       -   0.99998430  x   1.00002471  =   1.00000901
 DS2089!UTM  18      -   0.99998430  x   0.99973192  =   0.99971622
 DS2089
 DS2089_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9648481516(NAD 83)
 DS2089
 DS2089                          SUPERSEDED SURVEY CONTROL
 DS2089
 DS2089.No superseded survey control is available for this station.
 DS2089
 DS2089_MARKER: DD = SURVEY DISK
 DS2089_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS2089_STAMPING: COMMON 1966
 DS2089_MARK LOGO: MDBCSM
 DS2089_PROJECTION: RECESSED 3 CENTIMETERS
 DS2089_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS2089_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS2089+SATELLITE: SATELLITE OBSERVATIONS - January 02, 2024
 DS2089
 DS2089  HISTORY     - Date     Condition        Report By
 DS2089  HISTORY     - 19660101 MONUMENTED       MDBCSM
 DS2089  HISTORY     - 20231213 GOOD             MDSHA
 DS2089  HISTORY     - 20240102 GOOD             MDSHA
 DS2089
 DS2089                          STATION DESCRIPTION
 DS2089
 DS2089'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DS2089'THE MARK IS LOCATED ABOUT 6.4 MI (10.3 KM) WEST-NORTHWEST OF HAVRE DE
 DS2089'GRACE, 5.2 MI (8.4 KM) WEST-SOUTHWEST OF PORT DEPOSIT AND 5.2 MI (8.4
 DS2089'KM) NORTH-NORTHWEST OF ABERDEEN.
 DS2089'
 DS2089'TO REACH THE MARK FROM THE INTERSECTION OF MD 22(CHURCHVILLE RD)AND MD
 DS2089'155(LEVEL ROAD)TURN LEFT ONTO MD 155 AND PROCEED NORTH EAST ON MD 155
 DS2089'FOR 4.33 KM (2.69 MI) TO THE MARK ON THE RIGHT, SET IN THE TOP OF A
 DS2089'6-IN (15 CM) ROUND CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
 DS2089'
 DS2089'THE MARK IS 138.9 FT (42.3 M) WEST-SOUTHWEST OF A UTILITY POLE
 DS2089'NUMBERED BGE 562953, 86.9 FT (26.5 M) NORTH-NORTHWEST OF A UTILITY
 DS2089'POLE NUMBERED C P MD 285, 61.9 FT (18.9 M) SOUTH OF THE CENTERLINE OF
 DS2089'STATE ROUTE MD 155 AND 56.5 FT (17.2 M) EAST OF THE CENTERLINE OF
 DS2089'MCCOMMONS ROAD.
 DS2089
 DS2089                          STATION RECOVERY (2024)
 DS2089
 DS2089'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 DS2089'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6818 ***********************************************************************
 HV6818  DESIGNATION -  COMPTON MSFC 1908
 HV6818  PID         -  HV6818
 HV6818  STATE/COUNTY-  MD/ST MARYS
 HV6818  COUNTRY     -  US
 HV6818  USGS QUAD   -  LEONARDTOWN (2016)
 HV6818
 HV6818                         *CURRENT SURVEY CONTROL
 HV6818  ______________________________________________________________________
 HV6818* NAD 83(1993) POSITION- 38 15 21.43292(N) 076 41 47.91348(W)   ADJUSTED
 HV6818* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6818  ______________________________________________________________________
 HV6818  GEOID HEIGHT    -        -33.798 (meters)                     GEOID18
 HV6818  LAPLACE CORR    -         -2.94  (seconds)                    DEFLEC18
 HV6818  HORZ ORDER      -  THIRD
 HV6818
 HV6818.The horizontal coordinates were established by classical geodetic methods
 HV6818.and adjusted by the National Geodetic Survey in November 1994.
 HV6818
 HV6818.The orthometric height was scaled from a topographic map.
 HV6818
 HV6818.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6818.GEOID18 height accuracy estimate available here.
 HV6818
 HV6818.Click photographs - Photos may exist for this station.
 HV6818
 HV6818.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6818
 HV6818. The following values were computed from the NAD 83(1993) position.
 HV6818
 HV6818;                    North         East     Units Scale Factor Converg.
 HV6818;SPC MD       -    65,457.724   426,551.913   MT  1.00000795   +0 11 25.4
 HV6818;SPC MD       -   214,755.88  1,399,445.73   sFT  1.00000795   +0 11 25.4
 HV6818;SPC VA N     - 2,066,959.712 3,657,826.039   MT  0.99996818   +1 07 31.8
 HV6818;SPC VA N     - 6,781,350.32 12,000,717.60   sFT  0.99996818   +1 07 31.8
 HV6818;UTM  18      - 4,235,575.332   351,553.420   MT  0.99987139   -1 03 02.6
 HV6818
 HV6818!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6818!SPC MD       -   1.00000503  x   1.00000795  =   1.00001298
 HV6818!SPC VA N     -   1.00000503  x   0.99996818  =   0.99997321
 HV6818!UTM  18      -   1.00000503  x   0.99987139  =   0.99987642
 HV6818
 HV6818:                Primary Azimuth Mark                     Grid Az
 HV6818:SPC MD       -  CHERRY COVE MSFC 1908                    073 35 16.1
 HV6818:SPC VA N     -  CHERRY COVE MSFC 1908                    072 39 09.7
 HV6818:UTM  18      -  CHERRY COVE MSFC 1908                    074 49 44.1
 HV6818
 HV6818_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5155335575(NAD 83)
 HV6818
 HV6818|---------------------------------------------------------------------|
 HV6818| PID    Reference Object                     Distance      Geod. Az  |
 HV6818|                                                           dddmmss.s |
 HV6818| HV6803 CHERRY COVE MSFC 1908               APPROX. 1.4 KM 0734641.5 |
 HV6818|---------------------------------------------------------------------|
 HV6818
 HV6818                          SUPERSEDED SURVEY CONTROL
 HV6818
 HV6818  NAD 83(1991)-  38 15 21.43169(N)    076 41 47.91841(W) AD(       ) 3
 HV6818  NAD 83(1986)-  38 15 21.43268(N)    076 41 47.92990(W) AD(       ) 3
 HV6818  NAD 27      -  38 15 20.96000(N)    076 41 49.04300(W) AD(       ) 3
 HV6818  USSD        -  38 15 21.56300(N)    076 41 48.97300(W) AD(       ) 3
 HV6818
 HV6818.Superseded values are not recommended for survey control.
 HV6818
 HV6818.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6818.See file dsdata.pdf to determine how the superseded data were derived.
 HV6818
 HV6818_MARKER: H = DRILL HOLE
 HV6818_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6818_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6818+STABILITY: SURFACE MOTION
 HV6818
 HV6818  HISTORY     - Date     Condition        Report By
 HV6818  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6818  HISTORY     - 1942     GOOD             CGS
 HV6818  HISTORY     - 1960     GOOD             CGS
 HV6818
 HV6818                          STATION DESCRIPTION
 HV6818
 HV6818'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6818'STATION IS ON THE WESTERN SHORE OF BRETONS BAY, ON NEWTOWN NECK,
 HV6818'ABOUT 3/8 MILE SSW OF ENTRANCE TO COMBS CREEK, AND 1-1/2 MILES N
 HV6818'OF KAYWOOD POINT, IN CORNER OF FIELD ADJOINING LARGE BRICK HOUSE,
 HV6818'ABOUT 20 FEET ABOVE HIGH WATER, 75 YARDS W OF SHORE, 75 YARDS S OF
 HV6818'SHORE, 2 YARDS S OF FENCE, 3 YARDS W OF ANOTHER FENCE, AND 400
 HV6818'YARDS ENE OF A CHURCH AND HOUSE.
 HV6818'
 HV6818'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6818'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6818'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6818'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6818'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6818'AS FOLLOWS--NEAR PEAK OF TIN ROOF OF PRIESTS HOUSE, 400 YARDS, S
 HV6818'77 DEG 54 MIN W.  NAIL IN BLAZE IN 8-INCH CEDAR FENCE POST, 5.03
 HV6818'METERS (16.5 FEET), N 43 DEG 17 MIN W.  FLAGSTAFF OF COMPTON POST
 HV6818'OFFICE, 1/2 MILE, N 21 DEG 31 MIN E.  CHIMNEY OF STORE, 1/2 MILE,
 HV6818'N 22 DEG 4 MIN E.  NAIL IN BLAZE IN 4-INCH CEDAR FENCE POST, 2.01
 HV6818'METERS (6.59 FEET), N 44 DEG 11 MIN E.  CHIMNEY ON ROOF OF HOUSE,
 HV6818'7/8 MILE, N 73 DEG 46 MIN E.  CUPOLA ON STABLE, 1 1/8 MILES, S 46
 HV6818'DEG 53 MIN E.  NAIL IN BLAZE IN 4-INCH CEDAR TREE, 9.59 METERS
 HV6818'(31.46 FEET), S 20 DEG 36 MIN E.
 HV6818
 HV6818                          STATION RECOVERY (1942)
 HV6818
 HV6818'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6818'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HV6818'
 HV6818'(1) DELETE 3 YARDS W OF ANOTHER FENCE, SINCE THE FENCE NO LONGER
 HV6818'EXISTS.
 HV6818'
 HV6818'(2) DELETE 2 YARDS S OF FENCE, SINCE IT IS E OF THE FENCE.
 HV6818'
 HV6818'(3) DELETE WITH TOP PROJECTING ABOUT 4 INCHES ABOVE THE GROUND,
 HV6818'SINCE IT IS NOW FLUSH WITH THE SURFACE OF THE GROUND.
 HV6818'
 HV6818'(4) DELETE NAIL IN BLAZE IN 4-INCH CEDAR FENCE POST, SINCE THE
 HV6818'POST NO LONGER EXISTS.
 HV6818'
 HV6818'(5) DELETE NAIL IN BLAZE IN 4-INCH CEDAR TREE 9.59 METERS, SINCE
 HV6818'THE TREE NO LONGER EXISTS.
 HV6818'
 HV6818'THE STATION IS LOCATED ON THE WESTERN SHORE OF BRETONS BAY, ON
 HV6818'NEWTOWN NECK, ABOUT 3/8 MILE SW OF ENTRANCE TO COMBS CREEK, ABOUT
 HV6818'1-1/2 MILES N OF KAYWOOD POINT IN THE CORNER OF A FIELD, ABOUT 20
 HV6818'FEET ABOVE HIGH WATER, ABOUT 75 YARDS W OF THE SHORE ABOUT 75
 HV6818'YARDS S OF THE SHORE, 2 YARDS E OF AN OLD RAIL FENCE, ABOUT 400
 HV6818'YARDS E OF A CHURCH AND HOUSE, 25 FEET S OF A NAIL IN BLAZE IN AN
 HV6818'8-INCH CEDAR TREE, 11 FEET W OF A NAIL IN BLAZE IN A 6-INCH CEDAR
 HV6818'TREE AND 16.5 FEET SE OF A NAIL IN A BLAZE IN AN 8-INCH FENCE
 HV6818'POST.  THE AREA AROUND THE STATION IS COVERED BY A GROWTH OF
 HV6818'HONEYSUCKLE VINES.
 HV6818'
 HV6818'THE STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6818'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH
 HV6818'SQUARE CONCRETE MONUMENT, 2 FEET LONG, WITH THE TOP FLUSH WITH THE
 HV6818'SURFACE OF THE GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6818'COUNTERSUNK IN THE TOP OF THE MONUMENT.  THE STATION IS IN GOOD
 HV6818'CONDITION.
 HV6818
 HV6818                          STATION RECOVERY (1960)
 HV6818
 HV6818'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6818'STATION RECOVERED IN GOOD CONDITION.  THE DESCRIPTION OF W.D.P. IN
 HV6818'1942 IS ADEQUATE WITH THE FOLLOWING EXCEPTIONS AND ADDITIONS--
 HV6818'
 HV6818'THE BLAZED 6 INCH CEDAR TREE HAS BEEN DESTROYED.
 HV6818'
 HV6818'STATION IS 17 FT. S.E. OF NORTH END OF RAIL FENCE, 23.5 FT. N.E.
 HV6818'OF SOUTH END OF RAIL FENCE AND PROJECTS ABOUT 3 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4462 ***********************************************************************
 JV4462  DESIGNATION -  COMUS RESET
 JV4462  PID         -  JV4462
 JV4462  STATE/COUNTY-  MD/MONTGOMERY
 JV4462  COUNTRY     -  US
 JV4462  USGS QUAD   -  GERMANTOWN (2016)
 JV4462
 JV4462                         *CURRENT SURVEY CONTROL
 JV4462  ______________________________________________________________________
 JV4462* NAD 83(1993) POSITION- 39 14 27.26329(N) 077 21 22.67887(W)   ADJUSTED
 JV4462* NAVD 88 ORTHO HEIGHT -   185.7   (meters)      609.    (feet) VERTCON3
 JV4462  ______________________________________________________________________
 JV4462  GEOID HEIGHT    -        -32.126 (meters)                     GEOID18
 JV4462  LAPLACE CORR    -          5.97  (seconds)                    DEFLEC18
 JV4462  HORZ ORDER      -  FIRST
 JV4462
 JV4462.The horizontal coordinates were established by classical geodetic methods
 JV4462.and adjusted by the National Geodetic Survey in November 1994.
 JV4462
 JV4462.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4462.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4462
 JV4462.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4462.GEOID18 height accuracy estimate available here.
 JV4462
 JV4462.Click photographs - Photos may exist for this station.
 JV4462
 JV4462.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4462
 JV4462. The following values were computed from the NAD 83(1993) position.
 JV4462
 JV4462;                    North         East     Units Scale Factor Converg.
 JV4462;SPC MD       -   174,810.058   369,240.975   MT  0.99997010   -0 13 25.1
 JV4462;SPC MD       -   573,522.67  1,211,418.10   sFT  0.99997010   -0 13 25.1
 JV4462;UTM  18      - 4,346,156.748   296,646.006   MT  1.00010919   -1 29 27.8
 JV4462
 JV4462!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4462!SPC MD       -   0.99997590  x   0.99997010  =   0.99994601
 JV4462!UTM  18      -   0.99997590  x   1.00010919  =   1.00008509
 JV4462
 JV4462:                Primary Azimuth Mark                     Grid Az
 JV4462:SPC MD       -  COMUS AZ MK                              042 53 01.3
 JV4462:UTM  18      -  COMUS AZ MK                              044 09 04.0
 JV4462
 JV4462_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9664646156(NAD 83)
 JV4462
 JV4462|---------------------------------------------------------------------|
 JV4462| PID    Reference Object                     Distance      Geod. Az  |
 JV4462|                                                           dddmmss.s |
 JV4462| JV2365 B 91                                               0410733.8 |
 JV4462| CK6850 COMUS AZ MK                                        0423936.2 |
 JV4462| JV4464 COMUS RM A AMS 1968                  26.191 METERS 04624     |
 JV4462| CK6851 COMUS RM 1                           28.063 METERS 05453     |
 JV4462| JV4457 CLARKSBURG METH CH SPIRE            APPROX. 6.6 KM 0900016.1 |
 JV4462| CK6852 COMUS RM 2                           35.591 METERS 19415     |
 JV4462| JV4542 DICKERSON PEPCO W STACK             APPROX.10.0 KM 2492422.6 |
 JV4462| JV4541 DICKERSON PEPCO E STACK             APPROX. 9.9 KM 2494132.8 |
 JV4462|---------------------------------------------------------------------|
 JV4462
 JV4462                          SUPERSEDED SURVEY CONTROL
 JV4462
 JV4462  NAD 83(1991)-  39 14 27.26299(N)    077 21 22.67872(W) AD(       ) 1
 JV4462  NAD 83(1986)-  39 14 27.26296(N)    077 21 22.68937(W) AD(       ) 1
 JV4462  NAD 27      -  39 14 26.88294(N)    077 21 23.73240(W) AD(       ) 1
 JV4462  NGVD 29 (07/19/86)  185.9    (m)          610.     (f) VERT ANG       
 JV4462
 JV4462.Superseded values are not recommended for survey control.
 JV4462
 JV4462.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4462.See file dsdata.pdf to determine how the superseded data were derived.
 JV4462
 JV4462_MARKER: DS = TRIANGULATION STATION DISK
 JV4462_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4462_STAMPING: COMUS 1943 1968
 JV4462_MARK LOGO: CGS
 JV4462_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4462+STABILITY: SURFACE MOTION
 JV4462
 JV4462  HISTORY     - Date     Condition        Report By
 JV4462  HISTORY     - 1943     MONUMENTED       CGS
 JV4462  HISTORY     - 1958     GOOD             CGS
 JV4462  HISTORY     - 1968     GOOD             CGS
 JV4462  HISTORY     - 1969     GOOD             CGS
 JV4462
 JV4462                          STATION DESCRIPTION
 JV4462
 JV4462'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4462'THE STATION IS LOCATED ABOUT 12 MILES S AND 3 MILES E OF FREDERICK
 JV4462'AND ABOUT 1 MILE S AND 2-1/2 MILES E OF SUGAR LOAF MOUNTAIN ON ONE
 JV4462'OF THE TRYCONNEL STOCK FARMS.  IT IS 18.6 FEET W OF A FENCE, 18.6
 JV4462'FEET N OF A TELEPHONE POLE, 23.7 FEET W OF A TWIN CEDAR TREE AND
 JV4462'39 FEET W OF THE CENTER OF A CONCRETE ROAD.  IT IS STAMPED COMUS
 JV4462'1943 AND IS FLUSH WITH THE SURFACE OF THE GROUND.
 JV4462'
 JV4462'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE BRONZE DISKS SET
 JV4462'IN CONCRETE.
 JV4462'
 JV4462'REFERENCE MARK NO.1 IS NE OF THE STATION, 1 FOOT W OF A FENCE
 JV4462'LINE, 22 FEET W OF THE CENTER OF THE CONCRETE HIGHWAY.  IT IS
 JV4462'STAMPED COMUS NO.1 1943 AND PROJECTS 4 INCHES.
 JV4462'
 JV4462'REFERENCE MARK NO.2 IS S OF THE STATION, 2 FEET W OF A FENCE
 JV4462'LINE, 19 FEET E OF THE CENTER OF THE HIGHWAY AND 21 FEET N OF A
 JV4462'TELEPHONE POLE.  IT IS STAMPED COMUS NO.2 1943 AND PROJECTS 6
 JV4462'INCHES.
 JV4462'
 JV4462'THE AZIMUTH MARK IS 0.3 MILE BY ROAD NE OF THE STATION AND 0.15
 JV4462'MILE S OF THE COMUS POST OFFICE.  IT IS 21 FEET W OF THE CENTER
 JV4462'OF THE CONCRETE HIGHWAY.  IT IS 16 FEET NW OF THE N END OF A
 JV4462'CONCRETE HEADWALL, 11 FEET E OF A FENCE.  IT IS A UNITED STATES
 JV4462'COAST AND GEODETIC SURVEY BENCH MARK BRONZE DISK SET FLUSH IN THE
 JV4462'TOP OF A 6- BY 6-INCH CONCRETE POST THAT PROJECTS 6 INCHES.  IT
 JV4462'IS STAMPED B91 1942.
 JV4462'
 JV4462'TO REACH THE STATION FROM THE CENTER OF HYATTSTOWN GO W ON A
 JV4462'HARD-SURFACED ROAD AT A SIGN COMUS 3-1/2 MILES FOR 3.35 MILES TO
 JV4462'THE POST OFFICE IN COMUS.  CONTINUE STRAIGHT AHEAD FOR 1.55 MILES
 JV4462'TO A WOODEN GATE AND THE STATION.
 JV4462'
 JV4462'A 37-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT BART 1939.
 JV4462'
 JV4462'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAMASCUS.
 JV4462'
 JV4462'A 90-FOOT TOWER WILL SEE A 74-FOOT LIGHT AT WILBER.
 JV4462'
 JV4462'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT GAITHERSBURG.
 JV4462'
 JV4462'A 4-FOOT STAND WILL SEE AN 87-FOOT LIGHT AT CENTER.
 JV4462'
 JV4462'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT ATHEY 1943.
 JV4462'
 JV4462'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT IRON STONE RIDGE 2.
 JV4462'
 JV4462'A 37-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT OXLEYS HILL 2 1943.
 JV4462'
 JV4462'A 37-FOOT TOWER WILL SEE A 74-FOOT LIGHT AT SCHOLLS HILL 2.
 JV4462'
 JV4462'A 4-FOOT STAND WILL SEE AN 87-FOOT LIGHT AT HEAP.
 JV4462'
 JV4462'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4462
 JV4462                          STATION RECOVERY (1958)
 JV4462
 JV4462'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4462'STATION WAS RECOVERED AS DESCRIBED IN 1943 DESCRIPTIONS AND ALL
 JV4462'MARKS FOUND IN GOOD CONDITION.  A CHECK WAS MADE OF THE DISTANCE
 JV4462'AND DIRECTION TO THE MARKS AND FOUND TO CORRECT.  THE ORIGINAL
 JV4462'DESCRIPTION IS ADEQUATE.
 JV4462
 JV4462                          STATION RECOVERY (1968)
 JV4462
 JV4462'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (WOK)
 JV4462'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD
 JV4462'CONDITION.  THE DISTANCE AND DIRECTION TO THE REFERENCE MARKS WAS
 JV4462'FOUND TO BE SATISFACTORY.  NEW STATION AND UNDERGROUND MARKS WERE
 JV4462'SET AT THE SAME POSITION, 17 INCHES SUB-SURFACE TO GET BELOW
 JV4462'PLOW DEPTH.  A NEW AZIMUTH MARK WAS SET.  A COMPLETE DESCRIPTION
 JV4462'FOLLOWS--
 JV4462'
 JV4462'THE STATION IS ABOUT 12 MILES SOUTH AND 3 MILES EAST OF FREDERICK,
 JV4462'MARYLAND AND ABOUT 1 MILE SOUTH AND 2-1/2 MILES EAST OF SUGAR LOAF
 JV4462'MOUNTAIN, ON ONE OF THE TRYCONNEL STOCK FARMS.
 JV4462'
 JV4462'TO REACH FROM THE JUNCTION OF INTERSTATE 70-S AND MARYLAND STATE
 JV4462'HIGHWAY 109, ABOUT 1/2 MILE SOUTHWEST OF HYATTSTOWN, GO SOUTHWEST ON
 JV4462'HIGHWAY 109 FOR 1.25 MILES TO THE JUNCTION OF MARYLAND STATE
 JV4462'HIGHWAYS 95 AND 109 IN THE TOWN OF COMUS.  CONTINUE SOUTHERLY FOR
 JV4462'0.25 MILE TO THE AZIMUTH MARK ON THE RIGHT ON A BANK.  CONTINUE
 JV4462'SOUTHERLY FOR 0.20 MILE TO A SIDE ROAD LEFT AT SUMMIT OF HILL
 JV4462'AND CONTINUE FOR 0.10 MILE TO A WOODEN GATE ON THE RIGHT.  PASS
 JV4462'THROUGH THE GATE, TURN RIGHT, AND PROCEED APPROXIMATELY 50 FEET TO
 JV4462'THE STATION.
 JV4462'
 JV4462'THE AZIMUTH MARK IS 0.25 MILE NORTHEAST OF STATION BY ROAD, ON
 JV4462'THE WEST SIDE OF HIGHWAY 109.  IT IS 26 FEET NORTHWEST OF CENTERLINE
 JV4462'OF HIGHWAY, 57 FEET SOUTH OF SOUTH CORNER OF A BUILDING, 2.4 FEET
 JV4462'NORTH-NORTHWEST OF POWERPOLE NUMBERED T31807 AND IS 2.7 FEET SOUTH
 JV4462'OF A METAL WITNESS POST.  IT IS A CORPS OF ENGINEERS, U.S. ARMY
 JV4462'DISK STAMPED COMUS AZ MK ARMY MAP SERVICE 1968.  IT IS SET IN A
 JV4462'CONCRETE MONUMENT PROJECTING 0.5 FOOT.
 JV4462'
 JV4462'THE STATION MARK DISK IS STAMPED COMUS 1943 1968
 JV4462'TOP OF CONCRETE BLOCK IS APPROXIMATELY 2 FEET SQUARE.
 JV4462'
 JV4462'REFERENCE MARK 1 DISK IS STAMPED COMUS NO 1 1943 AND IS SET IN A
 JV4462'CONCRETE MONUMENT PROJECTING 0.1 FOOT.  IT IS 1.0 FOOT
 JV4462'WEST OF FENCELINE AND 22 FEET WEST OF THE CENTERLINE OF HIGHWAY
 JV4462'109.
 JV4462'
 JV4462'REFERENCE MARK 2 DISK IS STAMPED COMUS NO 2 1943 AND IS SET IN A
 JV4462'CONCRETE MONUMENT PROJECTING 0.5 FOOT.  IT IS 19 FEET
 JV4462'EAST OF CENTERLINE OF HIGHWAY 109 AND 21 FEET NORTH OF A TELEPHONE
 JV4462'POLE.
 JV4462'
 JV4462'A TRAVERSE TIE WAS MADE TO COMUS RM A.
 JV4462'
 JV4462'HEIGHT OF LIGHT PLATE ABOVE STATION MARK 100.1 FEET.
 JV4462'
 JV4462'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4462'1/2 MILE SOUTHWEST OF COMUS.
 JV4462
 JV4462                          STATION RECOVERY (1969)
 JV4462
 JV4462'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4462'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED.  BENCH
 JV4462'MARK B 91, WHICH WAS USED AS THE AZIMUTH MARK, HAS BEEN
 JV4462'DESTROYED.  THE STATION MARK HAS BEEN LOWERED BELOW PLOW DEPTH AND
 JV4462'AN AZIMUTH MARK WAS ESTABLISHED BY THE ARMY MAP SERVICE.
 JV4462'FOLLOWING IS A COMPLETE NEW DESCRIPTION.
 JV4462'
 JV4462'THE STATION IS ABOUT 2-1/2 MILES SOUTHEAST OF SUGAR LOAF MOUNTAIN,
 JV4462'3/4 MILE SOUTHWEST OF COMUS, IN A CULTIVATED FIELD AND ON PROPERTY
 JV4462'OF M.L. GAGLEY.
 JV4462'
 JV4462'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 95 AND 109
 JV4462'IN COMUS, GO SOUTHWEST ON HIGHWAY 109 FOR 0.35 MILE TO COMUS AZ MK
 JV4462'AMS ON THE RIGHT.  CONTINUE SOUTHWESTERLY FOR 0.35 MILE TO A GATE
 JV4462'ON THE RIGHT AND THE STATION ON THE RIGHT.
 JV4462'
 JV4462'STATION MARK IS A STANDARD DISK, STAMPED COMUS 1943 1968, SET IN
 JV4462'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 JV4462'1 FOOT BELOW THE SURFACE OF THE GROUND.  IT IS 47.3 FEET SOUTHWEST
 JV4462'OF A WITNESS POST, 39.5 FEET WEST-NORTHWEST OF THE CENTERLINE OF
 JV4462'HIGHWAY 109, 27.0 FEET NORTH OF A NORTHEAST GATE POST AND 19.5
 JV4462'FEET WEST-NORTHWEST OF A FENCE.
 JV4462'
 JV4462'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED COMUS NO 1 1943,
 JV4462'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST THAT IS FLUSH
 JV4462'WITH THE SURFACE OF THE GROUND.  IT IS 45.8 FEET NORTHEAST OF
 JV4462'THE WITNESS POST, 21.0 FEET WEST-NORTHWEST OF THE CENTERLINE OF
 JV4462'HIGHWAY 109, 1 FOOT WEST OF THE FENCE AND ABOUT 3 FEET HIGHER IN
 JV4462'ELEVATION THAN THE STATION.
 JV4462'
 JV4462'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED COMUS NO 2 1943,
 JV4462'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST THAT PROJECTS 3
 JV4462'INCHES ABOVE THE GROUND.  IT IS 19.5 FEET EAST OF THE CENTERLINE
 JV4462'OF HIGHWAY 109, 17.4 FEET NORTHEAST OF TELEPHONE LINE POLE NUMBER
 JV4462'M 2492 AND ABOUT 2 FEET HIGHER IN ELEVATION THAN THE STATION.
 JV4462'
 JV4462'COMUS AZ MK AMS IS A BRONZE DISK OF THE UNITED STATES CORPS OF
 JV4462'ENGINEERS ARMY MAP SERVICE, STAMPED COMUS AZ MK 1968, SET IN THE
 JV4462'TOP OF A 12 INCH SQUARE CONCRETE POST THAT PROJECTS 5 INCHES ABOVE
 JV4462'THE GROUND.  IT IS 25.0 FEET WEST OF THE CENTERLINE OF HIGHWAY
 JV4462'109, 5.6 FEET SOUTHWEST OF A FENCE CORNER, 2.6 FEET SOUTHEAST OF
 JV4462'A WITNESS POST AND 2.4 FEET NORTHWEST OF A POWER LINE POLE.
 JV4462'
 JV4462'THE DISTANCE BETWEEN THE REFERENCE MARKS WAS NOT MEASURED DUE TO
 JV4462'OBSTRUCTIONS.
 JV4462'
 JV4462'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4462'3/4 MILE SOUTHWEST OF COMUS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4464 ***********************************************************************
 JV4464  DESIGNATION -  COMUS RM A AMS 1968
 JV4464  PID         -  JV4464
 JV4464  STATE/COUNTY-  MD/MONTGOMERY
 JV4464  COUNTRY     -  US
 JV4464  USGS QUAD   -  GERMANTOWN (2016)
 JV4464
 JV4464                         *CURRENT SURVEY CONTROL
 JV4464  ______________________________________________________________________
 JV4464* NAD 83(1993) POSITION- 39 14 27.84906(N) 077 21 21.88796(W)   ADJUSTED
 JV4464* NAVD 88 ORTHO HEIGHT -   186.2   (meters)      611.    (feet) VERTCON3
 JV4464  ______________________________________________________________________
 JV4464  GEOID HEIGHT    -        -32.126 (meters)                     GEOID18
 JV4464  LAPLACE CORR    -          5.97  (seconds)                    DEFLEC18
 JV4464  HORZ ORDER      -  FIRST
 JV4464
 JV4464.The horizontal coordinates were established by classical geodetic methods
 JV4464.and adjusted by the National Geodetic Survey in November 1994.
 JV4464
 JV4464.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4464.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4464
 JV4464.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4464.GEOID18 height accuracy estimate available here.
 JV4464
 JV4464.Click photographs - Photos may exist for this station.
 JV4464
 JV4464.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4464
 JV4464. The following values were computed from the NAD 83(1993) position.
 JV4464
 JV4464;                    North         East     Units Scale Factor Converg.
 JV4464;SPC MD       -   174,828.047   369,260.011   MT  0.99997012   -0 13 24.6
 JV4464;SPC MD       -   573,581.68  1,211,480.55   sFT  0.99997012   -0 13 24.6
 JV4464;UTM  18      - 4,346,174.315   296,665.439   MT  1.00010910   -1 29 27.3
 JV4464
 JV4464!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4464!SPC MD       -   0.99997583  x   0.99997012  =   0.99994595
 JV4464!UTM  18      -   0.99997583  x   1.00010910  =   1.00008492
 JV4464
 JV4464:                Primary Azimuth Mark                     Grid Az
 JV4464:SPC MD       -  COMUS AZ MK                              042 38 40.7
 JV4464:UTM  18      -  COMUS AZ MK                              043 54 43.4
 JV4464
 JV4464_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9666546174(NAD 83)
 JV4464
 JV4464|---------------------------------------------------------------------|
 JV4464| PID    Reference Object                     Distance      Geod. Az  |
 JV4464|                                                           dddmmss.s |
 JV4464| CK6850 COMUS AZ MK                                        0422516.1 |
 JV4464| JV4462 COMUS RESET                          26.191 METERS 22624     |
 JV4464|---------------------------------------------------------------------|
 JV4464
 JV4464                          SUPERSEDED SURVEY CONTROL
 JV4464
 JV4464  NAD 83(1991)-  39 14 27.84877(N)    077 21 21.88781(W) AD(       ) 1
 JV4464  NAD 83(1986)-  39 14 27.84870(N)    077 21 21.89852(W) AD(       ) 1
 JV4464  NAD 27      -  39 14 27.46873(N)    077 21 22.94151(W) AD(       ) 1
 JV4464  NGVD 29 (07/19/86)  186.4    (m)          612.     (f) VERT ANG       
 JV4464
 JV4464.Superseded values are not recommended for survey control.
 JV4464
 JV4464.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4464.See file dsdata.pdf to determine how the superseded data were derived.
 JV4464
 JV4464_MARKER: DD = SURVEY DISK
 JV4464_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4464_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4464+STABILITY: SURFACE MOTION
 JV4464
 JV4464  HISTORY     - Date     Condition        Report By
 JV4464  HISTORY     - 1968     MONUMENTED       AMS
 JV4464
 JV4464                          STATION DESCRIPTION
 JV4464
 JV4464'DESCRIBED BY US ARMY MAP SERVICE (NOW DMA) 1968 (WOK)
 JV4464'THE STATION IS LOCATED AT THE SITE OF TRIANGULATION STATION COMUS
 JV4464'(USC AND GS) 1943, 1968.
 JV4464'
 JV4464'THE STATION IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED
 JV4464'COMUS RM A 1968 ARMY MAP SERVICE.  IT IS SET IN THE TOP OF A
 JV4464'SQUARE CONCRETE MONUMENT WHICH IS ABOUT 12 INCHES BELOW THE
 JV4464'GROUND SURFACE.  A SUB-SURFACE MARK IN A BLOCK OF CONCRETE WAS SET
 JV4464'AND STAMPED THE SAME AS THE SURFACE DISK.
 JV4464'
 JV4464'THE STATION MARK IS 43.5 FEET NORTH-NORTHEAST OF A METAL WITNESS
 JV4464'POST, 34.5 FEET NORTHWEST OF THE APPROXIMATE CENTER OF A
 JV4464'NORTHEAST-SOUTHWEST SURFACE ROAD AND 16.0 FEET NORTHWEST OF A
 JV4464'FENCELINE.
 JV4464'
 JV4464'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION COMUS
 JV4464'(USC AND GS) 1943, 1968, DISTANCE BEING 26.194 METERS OR 85.94 FEET
 JV4464'SOUTHWEST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6070 ***********************************************************************
 JV6070  DESIGNATION -  CONAWAY BWD
 JV6070  PID         -  JV6070
 JV6070  STATE/COUNTY-  MD/CARROLL
 JV6070  COUNTRY     -  US
 JV6070  USGS QUAD   -  FINKSBURG (2016)
 JV6070
 JV6070                         *CURRENT SURVEY CONTROL
 JV6070  ______________________________________________________________________
 JV6070* NAD 83(1991) POSITION- 39 26 33.42092(N) 076 54 36.83660(W)   ADJUSTED
 JV6070* NAVD 88 ORTHO HEIGHT -   195.    (meters)      640.    (feet) SCALED
 JV6070  ______________________________________________________________________
 JV6070  GEOID HEIGHT    -        -32.021 (meters)                     GEOID18
 JV6070  LAPLACE CORR    -         -1.55  (seconds)                    DEFLEC18
 JV6070  HORZ ORDER      -  SECOND
 JV6070
 JV6070.The horizontal coordinates were established by classical geodetic methods
 JV6070.and adjusted by the National Geodetic Survey in January 1992.
 JV6070
 JV6070.The orthometric height was scaled from a topographic map.
 JV6070
 JV6070.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6070.GEOID18 height accuracy estimate available here.
 JV6070
 JV6070.Click photographs - Photos may exist for this station.
 JV6070
 JV6070.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6070
 JV6070. The following values were computed from the NAD 83(1991) position.
 JV6070
 JV6070;                    North         East     Units Scale Factor Converg.
 JV6070;SPC MD       -   197,147.758   407,727.553   MT  0.99999872   +0 03 22.8
 JV6070;SPC MD       -   646,808.94  1,337,686.15   sFT  0.99999872   +0 03 22.8
 JV6070;UTM  18      - 4,367,637.358   335,619.194   MT  0.99993270   -1 12 49.9
 JV6070
 JV6070!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6070!SPC MD       -   0.99997446  x   0.99999872  =   0.99997318
 JV6070!UTM  18      -   0.99997446  x   0.99993270  =   0.99990717
 JV6070
 JV6070_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3561967637(NAD 83)
 JV6070
 JV6070                          SUPERSEDED SURVEY CONTROL
 JV6070
 JV6070  NAD 83(1986)-  39 26 33.41923(N)    076 54 36.84357(W) AD(       ) 2
 JV6070  NAD 27      -  39 26 33.05000(N)    076 54 37.91000(W) AD(       ) 2
 JV6070
 JV6070.Superseded values are not recommended for survey control.
 JV6070
 JV6070.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6070.See file dsdata.pdf to determine how the superseded data were derived.
 JV6070
 JV6070
 JV6070  HISTORY     - Date     Condition        Report By
 JV6070  HISTORY     - UNK      MONUMENTED
 JV6070  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV6070
 JV6070                          STATION DESCRIPTION
 JV6070
 JV6070'DESCRIBED BY US GEOLOGICAL SURVEY 1953
 JV6070'STATION WAS NOT FOUND.  FIELD HAS BEEN PLOWED NUMEROUS TIMES.  DID
 JV6070'NOT DIG FOR MARKER.  REFERENCE MARK AND AZIMUTH MARK FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7595 ***********************************************************************
 HV7595  DESIGNATION -  CONCORD
 HV7595  PID         -  HV7595
 HV7595  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7595  COUNTRY     -  US
 HV7595  USGS QUAD   -  ANACOSTIA (2016)
 HV7595
 HV7595                         *CURRENT SURVEY CONTROL
 HV7595  ______________________________________________________________________
 HV7595* NAD 83(2011) POSITION- 38 51 47.53345(N) 076 54 26.49559(W)   ADJUSTED
 HV7595* NAD 83(2011) ELLIP HT-    56.304 (meters)        (06/27/12)   ADJUSTED
 HV7595* NAD 83(2011) EPOCH   -  2010.00
 HV7595* NAVD 88 ORTHO HEIGHT -    88.7   (meters)      291.    (feet) GPS OBS
 HV7595  ______________________________________________________________________
 HV7595  NAVD 88 orthometric height was determined with an earlier geoid model
 HV7595  GEOID HEIGHT    -        -32.373 (meters)                     GEOID18
 HV7595  NAD 83(2011) X  -  1,126,495.316 (meters)                     COMP
 HV7595  NAD 83(2011) Y  - -4,843,643.608 (meters)                     COMP
 HV7595  NAD 83(2011) Z  -  3,980,538.963 (meters)                     COMP
 HV7595  LAPLACE CORR    -         -4.70  (seconds)                    DEFLEC18
 HV7595
 HV7595  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV7595  Standards:
 HV7595         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV7595            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV7595  -------------------------------------------------------------------
 HV7595  NETWORK    0.75   1.53           0.32   0.29   0.78      0.11423434
 HV7595  -------------------------------------------------------------------
 HV7595  Click here for local accuracies and other accuracy information.
 HV7595
 HV7595.The horizontal coordinates were established by GPS observations
 HV7595.and adjusted by the National Geodetic Survey in June 2012.
 HV7595
 HV7595.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV7595.been affixed to the stable North American tectonic plate. See 
 HV7595.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV7595
 HV7595.The horizontal coordinates are valid at the epoch date displayed above
 HV7595.which is a decimal equivalence of Year/Month/Day.
 HV7595
 HV7595.The orthometric height was determined by GPS observations and a
 HV7595.high-resolution geoid model.
 HV7595
 HV7595.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7595.GEOID18 height accuracy estimate available here.
 HV7595
 HV7595.Click photographs - Photos may exist for this station.
 HV7595
 HV7595.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV7595
 HV7595.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7595
 HV7595.The ellipsoidal height was determined by GPS observations
 HV7595.and is referenced to NAD 83.
 HV7595
 HV7595. The following values were computed from the NAD 83(2011) position.
 HV7595
 HV7595;                    North         East     Units Scale Factor Converg.
 HV7595;SPC MD       -   132,824.714   408,040.105   MT  0.99994987   +0 03 29.3
 HV7595;SPC MD       -   435,775.75  1,338,711.58   sFT  0.99994987   +0 03 29.3
 HV7595;UTM  18      - 4,303,325.028   334,514.239   MT  0.99993723   -1 11 49.4
 HV7595
 HV7595!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7595!SPC MD       -   0.99999117  x   0.99994987  =   0.99994104
 HV7595!UTM  18      -   0.99999117  x   0.99993723  =   0.99992840
 HV7595
 HV7595:                Primary Azimuth Mark                     Grid Az
 HV7595:SPC MD       -  HALL                                     349 05 30.3
 HV7595:UTM  18      -  HALL                                     350 20 49.0
 HV7595
 HV7595_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3451403325(NAD 83)
 HV7595
 HV7595|---------------------------------------------------------------------|
 HV7595| PID    Reference Object                     Distance      Geod. Az  |
 HV7595|                                                           dddmmss.s |
 HV7595| HV7768 SEAT PLEASANT POLICE RAD MAST       APPROX. 3.3 KM 0050034.7 |
 HV7595| CX2638 CONCORD RM 1                         25.062 METERS 07717     |
 HV7595| HV7602 DISTRICT HTS RAD MAST               APPROX. 1.1 KM 1132005.3 |
 HV7595| HV7608 SUITLAND BETHANY LUTH CH SPIRE      APPROX. 1.3 KM 1994350.0 |
 HV7595| HV7611 SUITLAND TANK                       APPROX. 2.3 KM 2243856.0 |
 HV7595| HV7607 SUITLAND LAREINE CATH HS SPIRE      APPROX. 1.4 KM 2271217.9 |
 HV7595| HV7617 SUITLAND US ARMY RELAY TOWER        APPROX. 3.3 KM 2304857.5 |
 HV7595| HV7606 SUITLAND ST BERNADINES CATH CH      APPROX. 1.3 KM 2412254.2 |
 HV7595| HV7615 SUITLAND FAA MICROWAVE DOME         APPROX. 3.0 KM 2484509.8 |
 HV7595| HV7596 SUITLAND RAD STA WPGC FM S MST      294.370 METERS 27102     |
 HV7595| HV7597 SUITLAND RAD STA WPGC FM N MST      279.107 METERS 28458     |
 HV7595| CX2639 CONCORD RM 2                         39.258 METERS 33712     |
 HV7595| HV7755 HALL                                APPROX. 7.5 KM 3490859.6 |
 HV7595| CX2637 CONCORD AZ MK                                      3513440.6 |
 HV7595|---------------------------------------------------------------------|
 HV7595
 HV7595                          SUPERSEDED SURVEY CONTROL
 HV7595
 HV7595  NAD 83(2007)-  38 51 47.53405(N)    076 54 26.49640(W) AD(2002.00) 0
 HV7595  ELLIP H (02/10/07)   56.316  (m)                       GP(2002.00)    
 HV7595  ELLIP H (08/30/02)   56.315  (m)                       GP(       ) 4 2
 HV7595  NAD 83(1993)-  38 51 47.53442(N)    076 54 26.49639(W) AD(       ) 1
 HV7595  ELLIP H (11/14/94)   56.307  (m)                       GP(       ) 4 2
 HV7595  ELLIP H (09/09/94)   56.283  (m)                       GP(       ) 4 1
 HV7595  NAD 83(1991)-  38 51 47.53442(N)    076 54 26.49706(W) AD(       ) 1
 HV7595  NAD 83(1991)-  38 51 47.53347(N)    076 54 26.49688(W) AD(       ) 1
 HV7595  NAD 83(1986)-  38 51 47.53210(N)    076 54 26.50912(W) AD(       ) 1
 HV7595  NAD 27      -  38 51 47.12779(N)    076 54 27.60466(W) AD(       ) 1
 HV7595  NGVD 29 (07/19/86)   88.9    (m)          292.     (f) VERT ANG       
 HV7595
 HV7595.Superseded values are not recommended for survey control.
 HV7595
 HV7595.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7595.See file dsdata.pdf to determine how the superseded data were derived.
 HV7595
 HV7595_MARKER: DS = TRIANGULATION STATION DISK
 HV7595_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7595_STAMPING: CONCORD 1970
 HV7595_MARK LOGO: CGS
 HV7595_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV7595_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7595+STABILITY: SURFACE MOTION
 HV7595_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7595+SATELLITE: SATELLITE OBSERVATIONS - March 31, 1993
 HV7595
 HV7595  HISTORY     - Date     Condition        Report By
 HV7595  HISTORY     - 1970     MONUMENTED       NGS
 HV7595  HISTORY     - 1970     GOOD             NGS
 HV7595  HISTORY     - 19920921 GOOD             HOBBS
 HV7595  HISTORY     - 19930331 GOOD             MSI
 HV7595  HISTORY     - 19970113 GOOD             DMW
 HV7595
 HV7595                          STATION DESCRIPTION
 HV7595
 HV7595'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7595'THE STATION IS ABOUT 1-1/2 MILES SOUTH-SOUTHEAST OF CAPITOL
 HV7595'HEIGHTS, 1 MILE NORTH OF SUITLAND AND 3/4 MILE NORTHWEST OF
 HV7595'DISTRICT HEIGHTS, NEAR THE SOUTH END OF A GRASSY AREA IN THE
 HV7595'CENTER OF A CIRCULAR DRIVE, ON THE GROUNDS OF THE CONCORD
 HV7595'ELEMENTARY SCHOOL.
 HV7595'
 HV7595'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 458 AND
 HV7595'4 IN SUITLAND, GO NORTHERLY ON HIGHWAY 458 FOR 0.35 MILE TO A
 HV7595'T-ROAD AND THE JUNCTION WITH MARLBORO PIKE.  TURN LEFT AND GO
 HV7595'NORTHWEST ON MARLBORO PIKE FOR 0.8 MILE TO THE JUNCTION WITH
 HV7595'WALKER MILL ROAD.  TURN SHARP RIGHT AND GO NORTHEAST ON WALKER
 HV7595'MILL ROAD FOR 0.5 MILE TO THE AZIMUTH MARK ON THE LEFT JUST
 HV7595'BEFORE REACHING WEBER DRIVE.  CONTINUE FOR ABOUT 100 FEET AND
 HV7595'TURN RIGHT ON WEBER DRIVE, GOING SOUTH FOR 0.15 MILE TO THE
 HV7595'JUNCTION WITH CONCORD LANE.  TURN RIGHT AND GO WESTERLY FOR
 HV7595'0.05 MILE TO THE SCHOOL AND THE STATION SOUTH OF THE
 HV7595'FLAGPOLE.
 HV7595'
 HV7595'STATION MARK IS A STANDARD DISK, STAMPED CONCORD 1970, SET IN
 HV7595'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7595'IS FLUSH WITH THE GROUND SURFACE.  IT IS 147.3 FEET NORTHEAST OF
 HV7595'THE SOUTHEAST CORNER OF THE SCHOOLHOUSE, 160.5 FEET SOUTHEAST OF
 HV7595'THE NORTHEAST CORNER OF THE SCHOOLHOUSE, 113.0 FEET EAST OF THE
 HV7595'CENTER DOOR OF THE MAIN ENTRANCE TO THE SCHOOL AND 34.0 FEET
 HV7595'SOUTH OF THE FLAGPOLE.  THE UNDERGROUND MARK IS 42 INCHES
 HV7595'BELOW THE GROUND SURFACE.
 HV7595'
 HV7595'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CONCORD NO 1 1970,
 HV7595'CEMENTED IN A DRILL HOLE IN THE CURB OF A SIDEWALK.  IT IS
 HV7595'78.4 FEET SOUTHEAST OF THE FLAGPOLE, 24.3 FEET WEST OF A FENCE,
 HV7595'15.0 FEET EAST OF THE CENTERLINE OF THE DRIVEWAY AND ABOUT THE
 HV7595'SAME ELEVATION AS THE STATION.
 HV7595'
 HV7595'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CONCORD NO 2 1970,
 HV7595'CEMENTED IN A DRILL HOLE IN THE CURB OF A SIDEWALK.  IT IS
 HV7595'99.5 FEET NORTH-NORTHWEST OF THE FLAGPOLE, 88.4 FEET EAST OF THE
 HV7595'NORTHEAST CORNER OF THE SCHOOLHOUSE, 17.2 FEET NORTH OF THE
 HV7595'CENTERLINE OF THE DRIVEWAY AND ABOUT THE SAME ELEVATION AS THE
 HV7595'STATION.
 HV7595'
 HV7595'AZIMUTH MARK IS A STANDARD DISK, STAMPED CONCORD 1970, CEMENTED
 HV7595'IN A DRILL HOLE IN A CURB.  IT IS 124.0 FEET WEST OF THE
 HV7595'INTERSECTION OF WALKER MILL ROAD, ROLLINS ROAD AND WEBER DRIVE,
 HV7595'34.0 FEET WEST OF A MANHOLE COVER, 22.0 FEET NORTH OF THE
 HV7595'CENTERLINE OF WALKER MILL ROAD AND 6.0 FFET SOUTH OF A TELEPHONE
 HV7595'LINE GUY POLE.
 HV7595
 HV7595                          STATION RECOVERY (1970)
 HV7595
 HV7595'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 HV7595'RECOVERED IN GOOD CONDITION.
 HV7595
 HV7595                          STATION RECOVERY (1992)
 HV7595
 HV7595'RECOVERY NOTE BY HOBBS AND ASSOCIATES 1992
 HV7595'RECOVERED IN GOOD CONDITION.
 HV7595
 HV7595                          STATION RECOVERY (1993)
 HV7595
 HV7595'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV7595'RECOVERED IN GOOD CONDITION.
 HV7595
 HV7595                          STATION RECOVERY (1997)
 HV7595
 HV7595'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 HV7595'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN5998 ***********************************************************************
 DN5998  DESIGNATION -  CONDON
 DN5998  PID         -  DN5998
 DN5998  STATE/COUNTY-  MD/CARROLL
 DN5998  COUNTRY     -  US
 DN5998  USGS QUAD   -  WESTMINSTER (2016)
 DN5998
 DN5998                         *CURRENT SURVEY CONTROL
 DN5998  ______________________________________________________________________
 DN5998* NAD 83(1986) POSITION- 39 35 40.7    (N) 076 57 42.2    (W)   HD_HELD2
 DN5998* NAVD 88 ORTHO HEIGHT -   228.038 (meters)      748.15  (feet) ADJUSTED
 DN5998  ______________________________________________________________________
 DN5998  GEOID HEIGHT    -        -32.240 (meters)                     GEOID18
 DN5998  DYNAMIC HEIGHT  -        227.920 (meters)      747.77  (feet) COMP
 DN5998  MODELED GRAVITY -    980,103.0   (mgal)                       NAVD 88
 DN5998
 DN5998  VERT ORDER      -  SECOND    CLASS II
 DN5998
 DN5998.The horizontal coordinates were established by autonomous hand held GPS
 DN5998.observations and have an estimated accuracy of +/- 10 meters.
 DN5998
 DN5998.The orthometric height was determined by differential leveling and
 DN5998.adjusted by the NATIONAL GEODETIC SURVEY
 DN5998.in June 2012.
 DN5998
 DN5998.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN5998.GEOID18 height accuracy estimate available here.
 DN5998
 DN5998.Click photographs - Photos may exist for this station.
 DN5998
 DN5998.The dynamic height is computed by dividing the NAVD 88
 DN5998.geopotential number by the normal gravity value computed on the
 DN5998.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN5998.degrees latitude (g = 980.6199 gals.).
 DN5998
 DN5998.The modeled gravity was interpolated from observed gravity values.
 DN5998
 DN5998;                    North         East    Units  Estimated Accuracy
 DN5998;SPC MD       -   214,023.      403,288.      MT  (+/- 10 meters HH2 GPS)
 DN5998
 DN5998_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3155584605(NAD 83)
 DN5998
 DN5998                          SUPERSEDED SURVEY CONTROL
 DN5998
 DN5998.No superseded survey control is available for this station.
 DN5998
 DN5998_MARKER: DH = HORIZONTAL CONTROL DISK
 DN5998_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN5998_STAMPING: CONDON 1961
 DN5998_MARK LOGO: MDBCSM
 DN5998_PROJECTION: FLUSH
 DN5998_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN5998+STABILITY: SURFACE MOTION
 DN5998_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN5998+SATELLITE: SATELLITE OBSERVATIONS - January 29, 2008
 DN5998
 DN5998  HISTORY     - Date     Condition        Report By
 DN5998  HISTORY     - 1961     MONUMENTED       MDBCSM
 DN5998  HISTORY     - 20080129 GOOD             MDSHA
 DN5998
 DN5998                          STATION DESCRIPTION
 DN5998
 DN5998'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN5998'THE MARK IS LOCATED ABOUT 6.2 MI (10.0 KM) SOUTHWEST OF MANCHESTER,
 DN5998'6.0 MI (9.7 KM) WEST OF HAMPSTEAD AND 2.2 MI (3.5 KM) NORTHEAST OF
 DN5998'WESTMINSTER AND 0.9 MI (1.4 KM) SOUTHWEST OF THE INTERSECTION OF
 DN5998'MARYLAND ROUTE 27 AND MARYLAND ROUTE 482.
 DN5998'
 DN5998'TO REACH THE MARK FROM THE MAIN STREET AND MARYLAND ROUTE 27 CROSSING
 DN5998'IN WESTMINSTER, GO NORTHEAST ALONG MARYLAND ROUTE 27 FOR 2.35 MI (3.8
 DN5998'KM) TO THE MARK ON THE LEFT.
 DN5998'
 DN5998'IT IS ABOUT 0.25 MI (0.4 KM) NORTHEAST OF THE INTERSECTION OF GAHLE
 DN5998'ROAD, 125 FT (38.1 M) NORTHEAST OF THE SOUTH END OF A METAL GUARDRAIL,
 DN5998'27 FT (8.2 M) NORTH OF THE CENTERLINE OF MARYLAND ROUTE 27, 113 FT
 DN5998'(34.4 M) SOUTHEAST OF G E POLE 327116, 2 FT (0.6 M) NORTH OF THE METAL
 DN5998'GUARDRAIL AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1734 ***********************************************************************
 HU1734  DESIGNATION -  CONNELLY
 HU1734  PID         -  HU1734
 HU1734  STATE/COUNTY-  MD/WICOMICO
 HU1734  COUNTRY     -  US
 HU1734  USGS QUAD   -  DELMAR (2016)
 HU1734
 HU1734                         *CURRENT SURVEY CONTROL
 HU1734  ______________________________________________________________________
 HU1734* NAD 83(1991) POSITION- 38 27 24.23002(N) 075 36 06.71730(W)   ADJUSTED
 HU1734* NAVD 88 ORTHO HEIGHT -    14.0   (meters)       46.    (feet) VERTCON3
 HU1734  ______________________________________________________________________
 HU1734  GEOID HEIGHT    -        -35.715 (meters)                     GEOID18
 HU1734  LAPLACE CORR    -         -1.27  (seconds)                    DEFLEC18
 HU1734  HORZ ORDER      -  SECOND
 HU1734
 HU1734.The horizontal coordinates were established by classical geodetic methods
 HU1734.and adjusted by the National Geodetic Survey in January 1992.
 HU1734
 HU1734.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1734.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1734
 HU1734.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1734.GEOID18 height accuracy estimate available here.
 HU1734
 HU1734.Click photographs - Photos may exist for this station.
 HU1734
 HU1734.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1734
 HU1734. The following values were computed from the NAD 83(1991) position.
 HU1734
 HU1734;                    North         East     Units Scale Factor Converg.
 HU1734;SPC MD       -    88,634.788   522,028.385   MT  0.99997643   +0 52 39.1
 HU1734;SPC MD       -   290,795.97  1,712,688.13   sFT  0.99997643   +0 52 39.1
 HU1734;UTM  18      - 4,256,663.738   447,486.970   MT  0.99963396   -0 22 27.6
 HU1734
 HU1734!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1734!SPC MD       -   1.00000341  x   0.99997643  =   0.99997984
 HU1734!UTM  18      -   1.00000341  x   0.99963396  =   0.99963737
 HU1734
 HU1734:                Primary Azimuth Mark                     Grid Az
 HU1734:SPC MD       -  CONNELLY RM 3                            271 40 13.8
 HU1734:UTM  18      -  CONNELLY RM 3                            272 55 20.5
 HU1734
 HU1734_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4748656663(NAD 83)
 HU1734
 HU1734|---------------------------------------------------------------------|
 HU1734| PID    Reference Object                     Distance      Geod. Az  |
 HU1734|                                                           dddmmss.s |
 HU1734| HU1751 CONNELLY 2                            9.959 METERS 01519     |
 HU1734| HU1733 DELMAR RM 4 A                       470.727 METERS 0903623.6 |
 HU1734| DC7948 CONNELLY RM 1                        16.562 METERS 09224     |
 HU1734| HU1736 CONNELLY RM 3                       APPROX. 0.7 KM 2723252.9 |
 HU1734| DC7949 CONNELLY RM 2                        15.091 METERS 32645     |
 HU1734| HU1735 MONUMENT E W 30 DE MD                59.219 METERS 34146     |
 HU1734|---------------------------------------------------------------------|
 HU1734
 HU1734                          SUPERSEDED SURVEY CONTROL
 HU1734
 HU1734  NAD 83(1986)-  38 27 24.22354(N)    075 36 06.74046(W) AD(       ) 2
 HU1734  NAD 27      -  38 27 23.80762(N)    075 36 08.00305(W) AD(       ) 2
 HU1734  NGVD 29 (07/19/86)   14.2    (m)           47.     (f) VERT ANG       
 HU1734
 HU1734.Superseded values are not recommended for survey control.
 HU1734
 HU1734.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1734.See file dsdata.pdf to determine how the superseded data were derived.
 HU1734
 HU1734_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1734_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1734_STAMPING: CONNELLY 1974
 HU1734_MARK LOGO: NGS
 HU1734_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1734_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1734+STABILITY: SURFACE MOTION
 HU1734
 HU1734  HISTORY     - Date     Condition        Report By
 HU1734  HISTORY     - 1974     MONUMENTED       NGS
 HU1734  HISTORY     - 1974     GOOD             NGS
 HU1734  HISTORY     - 1976     GOOD             NGS
 HU1734  HISTORY     - 19810624 GOOD             NGS
 HU1734  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU1734
 HU1734                          STATION DESCRIPTION
 HU1734
 HU1734'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1734'THE STATION IS LOCATED ABOUT 1.3 MILES WEST OF DELMAR, DELAWARE,
 HU1734'0.6 MILE SOUTH OF STATE ROAD 54 AND ON ROAD RIGHT-OF-WAY.
 HU1734'
 HU1734'TO REACH THE STATION FROM THE RAILROAD CROSSING AND STATE ROAD
 HU1734'54 IN DELMAR, GO WEST ON STATE ROAD 54 FOR 0.2 MILE TO A Y-FORK,
 HU1734'BEAR LEFT AND GO WEST ON A PAVED ROAD FOR 0.35 MILE TO A Y-FORK,
 HU1734'BEAR RIGHT AND CONTINUE WEST ON A PAVED ROAD FOR 0.65 MILE TO
 HU1734'POWERLINE POLE NUMBER 40 F-20 AND THE STATION ON THE LEFT.
 HU1734'
 HU1734'STATION MARKS ARE STANDARD DISKS STAMPED CONNELLY 1974.  THE
 HU1734'SURFACE DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE
 HU1734'MONUMENT THAT PROJECTS 2 INCHES ABOVE THE GROUND SURFACE.  IT IS
 HU1734'76 FEET WEST OF A DRIVEWAY, 21 FEET SOUTH OF THE CENTER OF THE
 HU1734'PAVED ROAD, 4 FEET SOUTH OF POWERLINE POLE NUMBER 40 F-20 AND 4
 HU1734'FEET WEST-SOUTHWEST OF A METAL WITNESS POST.  THE UNDERGROUND
 HU1734'DISK IS SET IN THE TOP OF AN IRREGULAR MASS OF CONCRETE 42
 HU1734'INCHES BELOW THE GROUND SURFACE.
 HU1734'
 HU1734'REFERENCE MARK 1, A STANDARD DISK STAMPED CONNELLY NO 1 1974,
 HU1734'IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1734'PROJECTS 2 INCHES ABOVE THE GROUND SURFACE.  IT IS 22 FEET
 HU1734'WEST-SOUTHWEST OF THE DRIVEWAY AND 21 FEET SOUTH OF THE CENTER
 HU1734'OF THE PAVED ROAD.
 HU1734'
 HU1734'REFERENCE MARK 2, A STANDARD DISK STAMPED CONNELLY NO 2 1974,
 HU1734'IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1734'PROJECTS 5 INCHES ABOVE THE GROUND SURFACE.  IT IS 18 FEET NORTH
 HU1734'OF THE CENTER OF THE PAVED ROAD AND 18 FEET EAST-SOUTHEAST OF A
 HU1734'14-INCH OAK TREE.
 HU1734'
 HU1734'REFERENCE MARK 3, A STANDARD DISK STAMPED CONNELLY NO 3 1974, IS
 HU1734'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1734'PROJECTS 6 INCHES ABOVE THE GROUND SURFACE.  IT IS 16 FEET SOUTH
 HU1734'OF THE CENTER OF THE PAVED ROAD, 4 FEET SOUTH-SOUTHWEST OF
 HU1734'POWERLINE POLE NUMBER 28 AND 4 FEET SOUTH-SOUTHWEST OF A METAL
 HU1734'WITNESS POST.  THE MARK SERVES AS AN AZIMUTH MARK.
 HU1734'
 HU1734'TO REACH REFERENCE MARK 3 FROM THE STATION, GO WEST ON THE PAVED
 HU1734'ROAD FOR 0.4 MILE TO THE MARK ON THE LEFT.
 HU1734
 HU1734                          STATION RECOVERY (1974)
 HU1734
 HU1734'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 HU1734'RECOVERED IN GOOD CONDITION.
 HU1734
 HU1734                          STATION RECOVERY (1976)
 HU1734
 HU1734'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1734'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1734'CONDITION, AS DESCRIBED IN THE 1974 DESCRIPTION.  REFERENCE MARK
 HU1734'ONE HAS BEEN HIT BUT IS SOLID AND IN GOOD CONDITION.  THE METERS
 HU1734'CHECK ALL DISTANCES TO THE REFERENCE MARKS.  HOWEVER, A DIFFERENCE
 HU1734'OF 0.11 FOOT WAS NOTED TO REFERENCE MARK 2.  IT IS BELIEVED A
 HU1734'TYPING ERROR WAS MADE IN DESCRIBING REFERENCE MARK 2.
 HU1734'
 HU1734'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 30 WAS SET AT THIS
 HU1734'DATE IN THE AREA OF THIS STATION, SEE DESCRIPTION THEREOF.
 HU1734'
 HU1734'THE 1974 DESCRIPTION IS ADEQUATE.
 HU1734'
 HU1734'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1734'1-3/4 MILES WEST OF DELMAR.
 HU1734
 HU1734                          STATION RECOVERY (1981)
 HU1734
 HU1734'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HU1734'THE STATION SURFACE MARK WAS FOUND OUT OF POSITION.  THE SUB-SURFACE
 HU1734'MARK WAS FOUND IN GOOD CONDITION AFTER THE SURFACE MARK WAS REMOVED.
 HU1734'REFERENCE MARK ONE WAS FOUND IN FAIR CONDITION, BUT IT IS HIGHLY
 HU1734'POSSIBLE THAT IT HAS BEEN DISTURBED.  BOTH THE STATION MARK AND
 HU1734'REFERENCE MARK ONE ARE IN IMMEDIATE DANGER OF BEING DESTROYED.  A NEW
 HU1734'STATION CONNELLY 2 ALONG WITH A NEW BOUNDARY MONUMENT 30 WERE
 HU1734'ESTABLISHED ON THIS DATE.  THE DISTANCES AND DIRECTIONS TO REFERENCE
 HU1734'MARK TWO AND BOUNDARY MONUMENT 30 WERE WITHIN CLOSE AGREEMENT WITH
 HU1734'THE MOST RECENT INFORMATION.
 HU1734
 HU1734                          STATION RECOVERY (1997)
 HU1734
 HU1734'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU1734'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1736 ***********************************************************************
 HU1736  DESIGNATION -  CONNELLY RM 3
 HU1736  PID         -  HU1736
 HU1736  STATE/COUNTY-  MD/WICOMICO
 HU1736  COUNTRY     -  US
 HU1736  USGS QUAD   -  DELMAR (2016)
 HU1736
 HU1736                         *CURRENT SURVEY CONTROL
 HU1736  ______________________________________________________________________
 HU1736* NAD 83(1991) POSITION- 38 27 25.19585(N) 075 36 34.34508(W)   ADJUSTED
 HU1736* NAVD 88 ORTHO HEIGHT -    14.514 (meters)       47.62  (feet) ADJUSTED
 HU1736  ______________________________________________________________________
 HU1736  GEOID HEIGHT    -        -35.710 (meters)                     GEOID18
 HU1736  LAPLACE CORR    -         -1.28  (seconds)                    DEFLEC18
 HU1736  DYNAMIC HEIGHT  -         14.505 (meters)       47.59  (feet) COMP
 HU1736  MODELED GRAVITY -    980,012.8   (mgal)                       NAVD 88
 HU1736
 HU1736  HORZ ORDER      -  SECOND
 HU1736  VERT ORDER      -  SECOND    CLASS I
 HU1736
 HU1736.The horizontal coordinates were established by classical geodetic methods
 HU1736.and adjusted by the National Geodetic Survey in January 1992.
 HU1736
 HU1736.The orthometric height was determined by differential leveling and
 HU1736.adjusted by the NATIONAL GEODETIC SURVEY
 HU1736.in June 1991.
 HU1736
 HU1736.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1736.GEOID18 height accuracy estimate available here.
 HU1736
 HU1736.Click photographs - Photos may exist for this station.
 HU1736
 HU1736.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1736
 HU1736.The dynamic height is computed by dividing the NAVD 88
 HU1736.geopotential number by the normal gravity value computed on the
 HU1736.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1736.degrees latitude (g = 980.6199 gals.).
 HU1736
 HU1736.The modeled gravity was interpolated from observed gravity values.
 HU1736
 HU1736. The following values were computed from the NAD 83(1991) position.
 HU1736
 HU1736;                    North         East     Units Scale Factor Converg.
 HU1736;SPC MD       -    88,654.334   521,358.167   MT  0.99997640   +0 52 21.7
 HU1736;SPC MD       -   290,860.09  1,710,489.25   sFT  0.99997640   +0 52 21.7
 HU1736;UTM  18      - 4,256,697.910   446,817.568   MT  0.99963483   -0 22 44.8
 HU1736
 HU1736!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1736!SPC MD       -   1.00000333  x   0.99997640  =   0.99997973
 HU1736!UTM  18      -   1.00000333  x   0.99963483  =   0.99963815
 HU1736
 HU1736:                Primary Azimuth Mark                     Grid Az
 HU1736:SPC MD       -  CONNELLY 2                               090 50 36.3
 HU1736:UTM  18      -  CONNELLY 2                               092 05 42.8
 HU1736
 HU1736_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4681756697(NAD 83)
 HU1736
 HU1736|---------------------------------------------------------------------|
 HU1736| PID    Reference Object                     Distance      Geod. Az  |
 HU1736|                                                           dddmmss.s |
 HU1736| HU1751 CONNELLY 2                          APPROX. 0.7 KM 0914258.0 |
 HU1736| HU1734 CONNELLY                            APPROX. 0.7 KM 0923235.7 |
 HU1736|---------------------------------------------------------------------|
 HU1736
 HU1736                          SUPERSEDED SURVEY CONTROL
 HU1736
 HU1736  NAD 83(1986)-  38 27 25.18964(N)    075 36 34.36819(W) AD(       ) 2
 HU1736  NAD 27      -  38 27 24.77347(N)    075 36 35.62961(W) AD(       ) 2
 HU1736  NGVD 29 (06/12/91)   14.764  (m)           48.44   (f) ADJUSTED    2 1
 HU1736  NGVD 29 (07/19/86)   14.7    (m)           48.     (f) VERT ANG       
 HU1736
 HU1736.Superseded values are not recommended for survey control.
 HU1736
 HU1736.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1736.See file dsdata.pdf to determine how the superseded data were derived.
 HU1736
 HU1736_MARKER: DR = REFERENCE MARK DISK
 HU1736_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1736_STAMPING: CONNELLY NO 3 1974
 HU1736_MARK LOGO: NGS
 HU1736_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1736_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1736+STABILITY: SURFACE MOTION
 HU1736_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1736+SATELLITE: SATELLITE OBSERVATIONS - November 20, 1989
 HU1736
 HU1736  HISTORY     - Date     Condition        Report By
 HU1736  HISTORY     - 1974     MONUMENTED       NGS
 HU1736  HISTORY     - 19810624 GOOD             NGS
 HU1736  HISTORY     - 19891120 GOOD             NGS
 HU1736
 HU1736                          STATION DESCRIPTION
 HU1736
 HU1736'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 HU1736'RECOVERED IN GOOD CONDITION.
 HU1736
 HU1736                          STATION RECOVERY (1989)
 HU1736
 HU1736'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU1736'0.5 KM (0.31 MI) WESTERLY ALONG WALLER ROAD FROM ITS JUNCTION WITH
 HU1736'STATE HIGHWAY 54 IN DELMAR, THENCE 1.8 KM (1.12 MI) WESTERLY ALONG A
 HU1736'PAVED ROAD, 12.1 M (39.70 FT) EAST OF THE EXTENDED CENTER OF A PAVED
 HU1736'ROAD LEADING NORTH, 5.3 M (17.39 FT) SOUTH OF THE CENTER OF THE ROAD,
 HU1736'1.5 M (4.92 FT) SOUTHWEST OF UTILITY POLE NUMBER 46580 96479, 1.1 M
 HU1736'(3.61 FT) WEST-SOUTHWEST OF A WITNESS POST, LEVEL WITH THE ROAD, AND
 HU1736'IN A CONCRETE MONUMENT THAT PROJECTS 0.1 M (0.33 FT) ABOVE THE GROUND
 HU1736'SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2618 ***********************************************************************
 HU2618  DESIGNATION -  CONNER AZ MK RESET
 HU2618  PID         -  HU2618
 HU2618  STATE/COUNTY-  MD/WORCESTER
 HU2618  COUNTRY     -  US
 HU2618  USGS QUAD   -  PUBLIC LANDING (2016)
 HU2618
 HU2618                         *CURRENT SURVEY CONTROL
 HU2618  ______________________________________________________________________
 HU2618* NAD 83(1993) POSITION- 38 09 03.66041(N) 075 19 04.37077(W)   ADJUSTED
 HU2618* NAVD 88 ORTHO HEIGHT -    10.762 (meters)       35.31  (feet) ADJUSTED
 HU2618  ______________________________________________________________________
 HU2618  GEOID HEIGHT    -        -36.271 (meters)                     GEOID18
 HU2618  LAPLACE CORR    -         -0.60  (seconds)                    DEFLEC18
 HU2618  DYNAMIC HEIGHT  -         10.755 (meters)       35.29  (feet) COMP
 HU2618  MODELED GRAVITY -    979,982.8   (mgal)                       NAVD 88
 HU2618
 HU2618  HORZ ORDER      -  SECOND
 HU2618  VERT ORDER      -  SECOND    CLASS I
 HU2618
 HU2618.The horizontal coordinates were established by classical geodetic methods
 HU2618.and adjusted by the National Geodetic Survey in November 1994.
 HU2618
 HU2618.The orthometric height was determined by differential leveling and
 HU2618.adjusted by the NATIONAL GEODETIC SURVEY
 HU2618.in June 2006.
 HU2618
 HU2618.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2618.GEOID18 height accuracy estimate available here.
 HU2618
 HU2618.Click photographs - Photos may exist for this station.
 HU2618
 HU2618.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2618
 HU2618.The dynamic height is computed by dividing the NAVD 88
 HU2618.geopotential number by the normal gravity value computed on the
 HU2618.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2618.degrees latitude (g = 980.6199 gals.).
 HU2618
 HU2618.The modeled gravity was interpolated from observed gravity values.
 HU2618
 HU2618. The following values were computed from the NAD 83(1993) position.
 HU2618
 HU2618;                    North         East     Units Scale Factor Converg.
 HU2618;SPC MD       -    55,123.780   547,437.150   MT  1.00002926   +1 03 20.7
 HU2618;SPC MD       -   180,851.93  1,796,050.05   sFT  1.00002926   +1 03 20.7
 HU2618;UTM  18      - 4,222,618.589   472,148.214   MT  0.99960955   -0 11 46.9
 HU2618
 HU2618!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2618!SPC MD       -   1.00000400  x   1.00002926  =   1.00003326
 HU2618!UTM  18      -   1.00000400  x   0.99960955  =   0.99961355
 HU2618
 HU2618_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7214822618(NAD 83)
 HU2618
 HU2618                          SUPERSEDED SURVEY CONTROL
 HU2618
 HU2618  NAD 83(1991)-  38 09 03.65976(N)    075 19 04.37115(W) AD(       ) 2
 HU2618  NAD 83(1986)-  38 09 03.65014(N)    075 19 04.40348(W) AD(       ) 2
 HU2618  NGVD 29 (03/28/90)   10.1    (m)           33.     (f) VERT ANG       
 HU2618
 HU2618.Superseded values are not recommended for survey control.
 HU2618
 HU2618.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2618.See file dsdata.pdf to determine how the superseded data were derived.
 HU2618
 HU2618_MARKER: DZ = AZIMUTH MARK DISK
 HU2618_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2618_STAMPING: CONNER 1932 RESET 1956
 HU2618_MARK LOGO: CGS
 HU2618_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2618_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2618+STABILITY: SURFACE MOTION
 HU2618_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2618+SATELLITE: SATELLITE OBSERVATIONS - December 17, 2003
 HU2618
 HU2618  HISTORY     - Date     Condition        Report By
 HU2618  HISTORY     - 1956     MONUMENTED       CGS
 HU2618  HISTORY     - 19850214 GOOD             NGS
 HU2618  HISTORY     - 20031217 GOOD             MDSHA
 HU2618
 HU2618                          STATION DESCRIPTION
 HU2618
 HU2618'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 HU2618'THE STATION IS LOCATED ABOUT 7.25 KM (4.50 MI) SOUTHEAST OF SNOW HILL,
 HU2618'1.5 KM (0.95 MI) SOUTH OF SPENCE AND IN THE SOUTHWEST EDGE OF A WOODED
 HU2618'AREA.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2618'TO REACH THE MARK FROM THE POST OFFICE AT SNOW HILL, GO EAST ON STATE
 HU2618'HIGHWAY 12 FOR 0.15 KM (0.10 MI) TO A CROSSROADS.  TURN LEFT AND GO
 HU2618'NORTH ON STATE HIGHWAY 394 FOR 0.25 KM (0.15 MI) TO A ROAD RIGHT.
 HU2618'TURN RIGHT AND GO EAST ON STATE HIGHWAY 365 FOR 1.6 KM (1.00 MI) TO
 HU2618'U.S. HIGHWAY 113.  CONTINUE EAST ON STATE HIGHWAY 365 FOR 5.8 KM
 HU2618'(3.60 MI) TO A ROAD RIGHT.  TURN RIGHT AND GO SOUTHERLY ON PAW PAW
 HU2618'CREEK ROAD FOR 1.6 KM (1.00 MI) TO THE MARK ON THE LEFT.
 HU2618'THE MARK IS SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST FLUSH
 HU2618'WITH THE GROUND.  IT IS 8.8 M (28.9 FT) SOUTHEAST OF THE CENTER OF PAW
 HU2618'PAW CREEK ROAD, 7.7 M (25.3 FT) NORTHEAST OF THE CENTER OF A FIELD
 HU2618'ROAD, 23.3 M (76.4 FT) EAST-NORTHEAST OF A POWERLINE POLE WITH NO
 HU2618'NUMBER AND 0.7 M (2.3 FT) NORTHWEST OF A WITNESS POST.
 HU2618
 HU2618                          STATION RECOVERY (2003)
 HU2618
 HU2618'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 HU2618'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2589 ***********************************************************************
 HU2589  DESIGNATION -  CONNER RESET
 HU2589  PID         -  HU2589
 HU2589  STATE/COUNTY-  MD/WORCESTER
 HU2589  COUNTRY     -  US
 HU2589  USGS QUAD   -  PUBLIC LANDING (2016)
 HU2589
 HU2589                         *CURRENT SURVEY CONTROL
 HU2589  ______________________________________________________________________
 HU2589* NAD 83(1993) POSITION- 38 08 53.04887(N) 075 19 09.07045(W)   ADJUSTED
 HU2589* NAVD 88 ORTHO HEIGHT -    10.9   (meters)       36.    (feet) VERTCON3
 HU2589  ______________________________________________________________________
 HU2589  GEOID HEIGHT    -        -36.274 (meters)                     GEOID18
 HU2589  LAPLACE CORR    -         -0.61  (seconds)                    DEFLEC18
 HU2589  HORZ ORDER      -  FIRST
 HU2589
 HU2589.The horizontal coordinates were established by classical geodetic methods
 HU2589.and adjusted by the National Geodetic Survey in November 1994.
 HU2589
 HU2589.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2589.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2589
 HU2589.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2589.GEOID18 height accuracy estimate available here.
 HU2589
 HU2589.Click photographs - Photos may exist for this station.
 HU2589
 HU2589.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2589
 HU2589. The following values were computed from the NAD 83(1993) position.
 HU2589
 HU2589;                    North         East     Units Scale Factor Converg.
 HU2589;SPC MD       -    54,794.531   547,328.763   MT  1.00002990   +1 03 17.8
 HU2589;SPC MD       -   179,771.72  1,795,694.45   sFT  1.00002990   +1 03 17.8
 HU2589;UTM  18      - 4,222,291.924   472,032.707   MT  0.99960963   -0 11 49.8
 HU2589
 HU2589!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2589!SPC MD       -   1.00000399  x   1.00002990  =   1.00003389
 HU2589!UTM  18      -   1.00000399  x   0.99960963  =   0.99961362
 HU2589
 HU2589:                Primary Azimuth Mark                     Grid Az
 HU2589:SPC MD       -  CONNER RM 3 AZIMUTH                      017 47 33.6
 HU2589:UTM  18      -  CONNER RM 3 AZIMUTH                      019 02 41.2
 HU2589
 HU2589_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7203222291(NAD 83)
 HU2589
 HU2589|---------------------------------------------------------------------|
 HU2589| PID    Reference Object                     Distance      Geod. Az  |
 HU2589|                                                           dddmmss.s |
 HU2589| DC7951 CONNER RM 3 AZIMUTH                                0185051.4 |
 HU2589| HU2618 CONNER AZ MK RESET                  346.620 METERS 01917     |
 HU2589| HU1603 CONNER RM 1                          45.292 METERS 07403     |
 HU2589| HU1602 CONNER RM 5                          75.523 METERS 16336     |
 HU2589| HU2590 CONNER RM 6                          96.704 METERS 16446     |
 HU2589| HU2617 CONNER RM 4                         102.472 METERS 17705     |
 HU2589| DC7950 CONNER RM 2                          98.664 METERS 22755     |
 HU2589| HU2591 CONNER RM 7                          90.634 METERS 28447     |
 HU2589|---------------------------------------------------------------------|
 HU2589
 HU2589                          SUPERSEDED SURVEY CONTROL
 HU2589
 HU2589  NAD 83(1991)-  38 08 53.04823(N)    075 19 09.07086(W) AD(       ) 1
 HU2589  NAD 83(1986)-  38 08 53.03863(N)    075 19 09.10323(W) AD(       ) 1
 HU2589  NAD 27      -  38 08 52.60650(N)    075 19 10.40413(W) AD(       ) 1
 HU2589  NGVD 29 (03/28/90)   11.1    (m)           36.     (f) VERT ANG       
 HU2589
 HU2589.Superseded values are not recommended for survey control.
 HU2589
 HU2589.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2589.See file dsdata.pdf to determine how the superseded data were derived.
 HU2589
 HU2589_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2589_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2589_STAMPING: CONNER 1932 1985
 HU2589_MARK LOGO: NGS
 HU2589_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2589_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2589+STABILITY: SURFACE MOTION
 HU2589_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2589+SATELLITE: SATELLITE OBSERVATIONS - 1985
 HU2589
 HU2589  HISTORY     - Date     Condition        Report By
 HU2589  HISTORY     - 1985     MONUMENTED       NGS
 HU2589
 HU2589                          STATION DESCRIPTION
 HU2589
 HU2589'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 HU2589'THE STATION IS LOCATED ABOUT 7.25 KM (4.50 MI) SOUTHEAST OF SNOW HILL,
 HU2589'2 KM (1.25 MI) SOUTH OF SPENCE AND IN A CULTIVATED FIELD.
 HU2589'OWNERSHIP--CARLTON F. CONNER, ROUTE 3, BOX 101, SNOW HILL, MARYLAND.
 HU2589'TELEPHONE NUMBER301-632-0904.
 HU2589'TO REACH THE STATION FROM THE POST OFFICE AT SNOW HILL, GO EAST ON
 HU2589'STATE HIGHWAY 12 FOR 0.15 KM (0.10 MI) TO A CROSSROADS.  TURN LEFT AND
 HU2589'GO NORTH ON STATE HIGHWAY 394 FOR 0.25 KM (0.15 MI) TO A ROAD RIGHT.
 HU2589'TURN RIGHT AND GO EAST ON STATE HIGHWAY 365 FOR 1.6 KM (1.00 MI) TO
 HU2589'U.S. HIGHWAY 113.  CONTINUE EAST ON STATE HIGHWAY 365 FOR 5.8 KM
 HU2589'(3.60 MI) TO A ROAD RIGHT.  TURN RIGHT AND GO SOUTHERLY ON PAW PAW
 HU2589'CREEK ROAD FOR 2.0 KM (1.25 MI) TO A ROAD LEFT.  TURN LEFT AND GO
 HU2589'EASTERLY ON A FARM ROAD FOR 0.05 KM (0.05 MI) TO THE STATION ON THE
 HU2589'LEFT.
 HU2589'THE STATION IS SET IN THE TOP OF A 12-INCH ROUND CONCRETE POST
 HU2589'RECESSED 0.6 M (2.0 FT) BELOW THE GROUND.  IT IS 79.9 M (262.1 FT)
 HU2589'SOUTHEAST OF THE CENTER OF PAW PAW CREEK ROAD, 90.6 M (297.2 FT)
 HU2589'SOUTHEAST OF A TELEPHONE POLE NUMBERED 5-1/2, 90.2 M (295.9 FT) EAST
 HU2589'OF A POWERLINE POLE WITH NO NUMBER, 36.7 M (120.4 FT) NORTHWEST OF A
 HU2589'DRAIN DITCH AND 105.2 M (345.1 FT) NORTH OF THE CENTER OF THE FARM
 HU2589'ROAD.
 HU2589'THE UNDERGROUND MARK IS RECESSED 1.4 M (4.6 FT) BELOW THE SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1603 ***********************************************************************
 HU1603  DESIGNATION -  CONNER RM 1
 HU1603  PID         -  HU1603
 HU1603  STATE/COUNTY-  MD/WORCESTER
 HU1603  COUNTRY     -  US
 HU1603  USGS QUAD   -  PUBLIC LANDING (2016)
 HU1603
 HU1603                         *CURRENT SURVEY CONTROL
 HU1603  ______________________________________________________________________
 HU1603* NAD 83(1993) POSITION- 38 08 53.45270(N) 075 19 07.28198(W)   ADJUSTED
 HU1603* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 HU1603  ______________________________________________________________________
 HU1603  GEOID HEIGHT    -        -36.274 (meters)                     GEOID18
 HU1603  LAPLACE CORR    -         -0.61  (seconds)                    DEFLEC18
 HU1603  HORZ ORDER      -  SECOND
 HU1603
 HU1603.The horizontal coordinates were established by classical geodetic methods
 HU1603.and adjusted by the National Geodetic Survey in November 1994.
 HU1603
 HU1603.The orthometric height was scaled from a topographic map.
 HU1603
 HU1603.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1603.GEOID18 height accuracy estimate available here.
 HU1603
 HU1603.Click photographs - Photos may exist for this station.
 HU1603
 HU1603.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1603
 HU1603. The following values were computed from the NAD 83(1993) position.
 HU1603
 HU1603;                    North         East     Units Scale Factor Converg.
 HU1603;SPC MD       -    54,807.783   547,372.075   MT  1.00002988   +1 03 18.9
 HU1603;SPC MD       -   179,815.20  1,795,836.55   sFT  1.00002988   +1 03 18.9
 HU1603;UTM  18      - 4,222,304.221   472,076.279   MT  0.99960960   -0 11 48.7
 HU1603
 HU1603!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1603!SPC MD       -   1.00000385  x   1.00002988  =   1.00003373
 HU1603!UTM  18      -   1.00000385  x   0.99960960  =   0.99961345
 HU1603
 HU1603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7207622304(NAD 83)
 HU1603
 HU1603|---------------------------------------------------------------------|
 HU1603| PID    Reference Object                     Distance      Geod. Az  |
 HU1603|                                                           dddmmss.s |
 HU1603| HU2618 CONNER AZ MK RESET                  322.619 METERS 01242     |
 HU1603| HU2617 CONNER RM 4                                        19827     |
 HU1603| HU2589 CONNER RESET                         45.292 METERS 25403     |
 HU1603|---------------------------------------------------------------------|
 HU1603
 HU1603                          SUPERSEDED SURVEY CONTROL
 HU1603
 HU1603  NAD 83(1991)-  38 08 53.45206(N)    075 19 07.28238(W) AD(       ) 2
 HU1603  NAD 83(1986)-  38 08 53.44245(N)    075 19 07.31526(W) AD(       ) 2
 HU1603  NAD 27      -  38 08 53.01000(N)    075 19 08.61500(W) AD(       ) 2
 HU1603
 HU1603.Superseded values are not recommended for survey control.
 HU1603
 HU1603.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1603.See file dsdata.pdf to determine how the superseded data were derived.
 HU1603
 HU1603_MARKER: DR = REFERENCE MARK DISK
 HU1603_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1603_STAMPING: CONNER NO 1 1932
 HU1603_MARK LOGO: CGS
 HU1603_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1603+STABILITY: SURFACE MOTION
 HU1603
 HU1603  HISTORY     - Date     Condition        Report By
 HU1603  HISTORY     - 1956     MONUMENTED       CGS
 HU1603
 HU1603                          STATION DESCRIPTION
 HU1603
 HU1603'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (EHK)
 HU1603'THE STATION IS LOCATED IN WORCESTER COUNTY, ABOUT 1.3 MI. S OF
 HU1603'A SMALL VILLAGE CALLED SPENCE WHICH IS ON THE PAVED ROAD FROM
 HU1603'SNOW HILL TO PUBLIC LANDING, IN A FIELD OWNED BY MR. CARLTON
 HU1603'F. CONNER, ABOUT 170 YD. E OF THE CENTERLINE OF A PAVED ROAD
 HU1603'(PRESENTLY UNDER CONSTRUCTION), 241.6 FT. N OF THE NW CORNER OF
 HU1603'A LARGE BARN, AND 2 FT. W OF A DRAINAGE DITCH.
 HU1603'
 HU1603'TO REACH THE STATION FROM THE TRAFFIC LIGHT AT THE INTERSECTION
 HU1603'OF STATE HIGHWAY 12 AND U.S. HIGHWAY 113 IN SNOW HILL.  GO EAST
 HU1603'ON U.S. HIGHWAY 113 FOR 0.15 MILE TO THE JUNCTION OF U.S. HIGHWAY
 HU1603'113 AND STATE HIGHWAY 365.  TURN SHARP RIGHT AND GO SOUTHEAST
 HU1603'ON HIGHWAY 365 FOR 4.65 MILES TO A CROSSROAD AND A SERVICE
 HU1603'STATION IN THE NORTHEAST ANGLE OF THE INTERSECTION.  TURN RIGHT
 HU1603'AND GO SOUTH ON PAWPAW ROAD FOR 1.0 MILE TO A GRAVELED ROAD
 HU1603'ON THE LEFT AND THE AZIMUTH MARK.  CONTINUE SOUTH ON THE
 HU1603'GRAVELED ROAD FOR 0.25 TO MR. CONNERS DRIVEWAY ON THE LEFT,
 HU1603'EAST, SIDE OF THE ROAD.  TURN LEFT AND GO EAST ON THE
 HU1603'DRIVEWAY FOR 0.1 MILE TO THE STATION AS DESCRIBED.
 HU1603'
 HU1603'THE STATION IS MARKED WITH A STANDARD REFERENCE-MARK DISK,
 HU1603'STAMPED CONNER NO 1 1932 AND SET IN THE TOP OF A 10-IN. SQUARE
 HU1603'CONCRETE MONUMENT PROJECTING 6 IN. ABOVE THE GROUND.
 HU1603'
 HU1603'THERE IS NO UNDERGROUND STATION MARK.
 HU1603'
 HU1603'AZIMUTH MARK CONNER 1932 RESET 1956 IS ABOUT 325 M. N OF
 HU1603'REFERENCE MARK 1, IN THE NE CORNER OF A T-INTERSECTION, 31.0
 HU1603'FT. E OF THE CENTERLINE OF A PAVED ROAD, 23.8 FT. N OF THE
 HU1603'CENTERLINE OF A DIRT ROAD, 42.0 FT. NE OF THE INTERSECTION OF THE
 HU1603'CENTERLINES OF THESE TWO ROADS, AND ABOUT 2 FT. HIGHER THAN THE
 HU1603'ROADWAY.  THE MARK IS A STANDARD BRONZE DISK, STAMPED CONNER
 HU1603'1932 RESET 1956 AND SET IN THE TOP OF A 10-IN. SQUARE CONCRETE
 HU1603'MONUMENT WHICH IS FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2617 ***********************************************************************
 HU2617  DESIGNATION -  CONNER RM 4
 HU2617  PID         -  HU2617
 HU2617  STATE/COUNTY-  MD/WORCESTER
 HU2617  COUNTRY     -  US
 HU2617  USGS QUAD   -  PUBLIC LANDING (2016)
 HU2617
 HU2617                         *CURRENT SURVEY CONTROL
 HU2617  ______________________________________________________________________
 HU2617* NAD 83(1986) POSITION- 38 08 49.74   (N) 075 19 08.86   (W)   HD_HELD1
 HU2617* NAVD 88 ORTHO HEIGHT -    12.308 (meters)       40.38  (feet) ADJUSTED
 HU2617  ______________________________________________________________________
 HU2617  GEOID HEIGHT    -        -36.276 (meters)                     GEOID18
 HU2617  DYNAMIC HEIGHT  -         12.300 (meters)       40.35  (feet) COMP
 HU2617  MODELED GRAVITY -    979,982.4   (mgal)                       NAVD 88
 HU2617
 HU2617  VERT ORDER      -  SECOND    CLASS I
 HU2617
 HU2617.The horizontal coordinates were determined by differentially corrected
 HU2617.hand held GPS observations or other comparable positioning techniques
 HU2617.and have an estimated accuracy of +/- 3 meters.
 HU2617
 HU2617.The orthometric height was determined by differential leveling and
 HU2617.adjusted by the NATIONAL GEODETIC SURVEY
 HU2617.in June 2006.
 HU2617
 HU2617.No vertical observational check was made to the station.
 HU2617
 HU2617.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2617.GEOID18 height accuracy estimate available here.
 HU2617
 HU2617.Click photographs - Photos may exist for this station.
 HU2617
 HU2617.The dynamic height is computed by dividing the NAVD 88
 HU2617.geopotential number by the normal gravity value computed on the
 HU2617.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2617.degrees latitude (g = 980.6199 gals.).
 HU2617
 HU2617.The modeled gravity was interpolated from observed gravity values.
 HU2617
 HU2617;                    North         East    Units  Estimated Accuracy
 HU2617;SPC MD       -    54,692.6     547,335.8     MT  (+/- 3 meters HH1 GPS) 
 HU2617
 HU2617_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7203722189(NAD 83)
 HU2617
 HU2617                          SUPERSEDED SURVEY CONTROL
 HU2617
 HU2617.No superseded survey control is available for this station.
 HU2617
 HU2617_MARKER: DR = REFERENCE MARK DISK
 HU2617_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2617_STAMPING: CONNER NO 4 1932
 HU2617_MARK LOGO: CGS
 HU2617_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2617_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2617+STABILITY: SURFACE MOTION
 HU2617_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2617+SATELLITE: SATELLITE OBSERVATIONS - December 17, 2003
 HU2617
 HU2617  HISTORY     - Date     Condition        Report By
 HU2617  HISTORY     - 1932     MONUMENTED       CGS
 HU2617  HISTORY     - 19850214 GOOD             NGS
 HU2617  HISTORY     - 20031217 GOOD             MDSHA
 HU2617
 HU2617                          STATION DESCRIPTION
 HU2617
 HU2617'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 HU2617'THE MARK IS LOCATED ABOUT 7.25 KM (4.50 MI) SOUTHEAST OF SNOW HILL, 2
 HU2617'KM (1.25 MI) SOUTH OF SPENCE AT THE EDGE OF A CULTIVATED FIELD.
 HU2617'OWNERSHIP--CARLTON F. CONNER, ROUTE 3, BOX 101, SNOW HILL, MARYLAND.
 HU2617'TELEPHONE NUMBER301-632-0904.
 HU2617'TO REACH THE MARK FROM THE POST OFFICE AT SNOW HILL, GO EAST ON STATE
 HU2617'HIGHWAY 12 FOR 0.15 KM (0.10 MI) TO A CROSSROADS.  TURN LEFT AND GO
 HU2617'NORTH ON STATE HIGHWAY 394 FOR 0.25 KM (0.15 MI) TO A ROAD RIGHT.
 HU2617'TURN RIGHT AND GO EAST ON STATE HIGHWAY 365 FOR 1.6 KM (1.00 MI) TO
 HU2617'U.S. HIGHWAY 113.  CONTINUE EAST ON STATE HIGHWAY 365 FOR 5.8 KM
 HU2617'(3.60 MI) TO A ROAD RIGHT.  TURN RIGHT AND GO SOUTHERLY ON PAW PAW
 HU2617'CREEK ROAD FOR 2.0 KM (1.25 MI) TO A ROAD LEFT.  TURN LEFT AND GO
 HU2617'EASTERLY ON A FARM ROAD FOR 0.05 KM (0.05 MI) TO THE MARK ON THE LEFT.
 HU2617'THE MARK IS SET IN THE TOP OF A 12-INCH ROUND CONCRETE POST PROJECTING
 HU2617'0.25 M (0.8 FT) ABOVE THE GROUND.  IT IS 29.1 M (95.5 FT) NORTHWEST OF
 HU2617'THE SOUTHWEST CORNER OF MR. CONNERS HOME, 21.2 M (69.6 FT) NORTHWEST
 HU2617'OF THE NORTHWEST CORNER OF MR. CONNERS HOME, 4.5 M (14.8 FT) NORTH OF
 HU2617'THE CENTER OF THE FARM ROAD AND 1.5 M (4.9 FT) NORTH OF A 16-INCH PINE
 HU2617'TREE.
 HU2617
 HU2617                          STATION RECOVERY (2003)
 HU2617
 HU2617'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 HU2617'THE STATION IS LOCATED ABOUT 4.5 MI (7.24 KM) SOUTHEAST OF SNOW HILL
 HU2617'AND 1.3 MI (2.09 KM) SOUTH OF THE SMALL TOWN OF SPENCE. TO REACH THE
 HU2617'STATION FROM THE COURTHOUSE IN SNOW HILL, GO NORTHEAST ALONG BUSINESS
 HU2617'U.S.113 FOR 0.15 MI (0.24 KM) TO STATE HIGHWAY 365. TURN RIGHT AND GO
 HU2617'SOUTHEAST ALONG STATE HIGHWAY 365 FOR 4.65 MI (7.48 KM) TO PAWPAW
 HU2617'CREEK ROAD.  TURN RIGHT AND GO SOUTH ALONG PAWPAW CREEK ROAD FOR 1.25
 HU2617'MI (2.01 KM) TO A FARM ENTRANCE ON THE LEFT.  TURN LEFT AND GO EAST ON
 HU2617'THE DRIVEWAY FOR 0.1 MI (0.16 KM) TO THE STATION ON THE LEFT. THE
 HU2617'STATION IS A STANDARD DISK STAMPED CONNER NO 4 1932, SET IN THE TOP OF
 HU2617'A 10 INCH (25 CM) CONCRETE CYLINDER PROJECTING ABOUT 4 INCH (10 CM)
 HU2617'ABOVE THE GROUND.  IT IS 14.5 FT (4.4 M) NORTH OF A ROAD LEADING TO
 HU2617'THE FARM HOUSE, 4.7 FT (1.4 M) NORTHWEST OF A PINE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1602 ***********************************************************************
 HU1602  DESIGNATION -  CONNER RM 5
 HU1602  PID         -  HU1602
 HU1602  STATE/COUNTY-  MD/WORCESTER
 HU1602  COUNTRY     -  US
 HU1602  USGS QUAD   -  PUBLIC LANDING (2016)
 HU1602
 HU1602                         *CURRENT SURVEY CONTROL
 HU1602  ______________________________________________________________________
 HU1602* NAD 83(1993) POSITION- 38 08 50.69905(N) 075 19 08.19499(W)   ADJUSTED
 HU1602* NAVD 88 ORTHO HEIGHT -    12.0   (meters)       39.    (feet) VERTCON3
 HU1602  ______________________________________________________________________
 HU1602  GEOID HEIGHT    -        -36.275 (meters)                     GEOID18
 HU1602  LAPLACE CORR    -         -0.62  (seconds)                    DEFLEC18
 HU1602  HORZ ORDER      -  SECOND
 HU1602
 HU1602.The horizontal coordinates were established by classical geodetic methods
 HU1602.and adjusted by the National Geodetic Survey in November 1994.
 HU1602
 HU1602.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1602.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1602
 HU1602.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1602.GEOID18 height accuracy estimate available here.
 HU1602
 HU1602.Click photographs - Photos may exist for this station.
 HU1602
 HU1602.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1602
 HU1602. The following values were computed from the NAD 83(1993) position.
 HU1602
 HU1602;                    North         East     Units Scale Factor Converg.
 HU1602;SPC MD       -    54,722.482   547,351.410   MT  1.00003005   +1 03 18.3
 HU1602;SPC MD       -   179,535.34  1,795,768.75   sFT  1.00003005   +1 03 18.3
 HU1602;UTM  18      - 4,222,219.427   472,053.765   MT  0.99960962   -0 11 49.2
 HU1602
 HU1602!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1602!SPC MD       -   1.00000382  x   1.00003005  =   1.00003387
 HU1602!UTM  18      -   1.00000382  x   0.99960962  =   0.99961343
 HU1602
 HU1602:                Primary Azimuth Mark                     Grid Az
 HU1602:SPC MD       -  CONNER AZ MK RESET                       012 03 36.6
 HU1602:UTM  18      -  CONNER AZ MK RESET                       013 18 44.1
 HU1602
 HU1602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7205322219(NAD 83)
 HU1602
 HU1602|---------------------------------------------------------------------|
 HU1602| PID    Reference Object                     Distance      Geod. Az  |
 HU1602|                                                           dddmmss.s |
 HU1602| HU2618 CONNER AZ MK RESET                  410.344 METERS 0130654.9 |
 HU1602| HU1603 CONNER RM 1                          87.766 METERS 01440     |
 HU1602| HU2617 CONNER RM 4                                        11815     |
 HU1602| HU2589 CONNER RESET                         75.523 METERS 34336     |
 HU1602|---------------------------------------------------------------------|
 HU1602
 HU1602                          SUPERSEDED SURVEY CONTROL
 HU1602
 HU1602  NAD 83(1991)-  38 08 50.69841(N)    075 19 08.19540(W) AD(       ) 2
 HU1602  NAD 83(1986)-  38 08 50.68943(N)    075 19 08.22802(W) AD(       ) 2
 HU1602  NAD 27      -  38 08 50.25870(N)    075 19 09.52940(W) AD(       ) 2
 HU1602  NGVD 29 (07/19/86)   12.2    (m)           40.     (f) VERT ANG       
 HU1602
 HU1602.Superseded values are not recommended for survey control.
 HU1602
 HU1602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1602.See file dsdata.pdf to determine how the superseded data were derived.
 HU1602
 HU1602_MARKER: DR = REFERENCE MARK DISK
 HU1602_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1602_STAMPING: CONNER NO 5 1932
 HU1602_MARK LOGO: CGS
 HU1602_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1602+STABILITY: SURFACE MOTION
 HU1602
 HU1602  HISTORY     - Date     Condition        Report By
 HU1602  HISTORY     - 1962     MONUMENTED       CGS
 HU1602
 HU1602                          STATION DESCRIPTION
 HU1602
 HU1602'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1602'THE STATION IS LOCATED ABOUT 4.5 MILES SOUTHEAST OF SNOW HILL,
 HU1602'1.3 MILES SOUTH OF THE SMALL VILLAGE OF SPENCE AND ON PROPERTY
 HU1602'OWNED BY MR. CARLTON F. CONNER.
 HU1602'
 HU1602'THIS MARK WAS ESTABLISHED AND USED AS A STATION, BECAUSE THE LAND
 HU1602'OWNER DID NOT WANT VEHICLES CROSSING THE CULTIVATED FIELD, DAMAGING
 HU1602'THE CROPS AND THE LAND.
 HU1602'
 HU1602'TO REACH THE STATION FROM THE TRAFFIC LIGHT AT THE INTERSECTION
 HU1602'OF STATE HIGHWAY 12 AND U.S. HIGHWAY 113 IN SNOW HILL.  GO EAST
 HU1602'ON U.S. HIGHWAY 113 FOR 0.15 MILE TO THE JUNCTION OF U.S. HIGHWAY
 HU1602'113 AND STATE HIGHWAY 365.  TURN SHARP RIGHT AND GO SOUTHEAST
 HU1602'ON HIGHWAY 365 FOR 4.65 MILES TO A CROSSROAD AND A SERVICE
 HU1602'STATION IN THE NORTHEAST ANGLE OF THE INTERSECTION.  TURN RIGHT
 HU1602'AND GO SOUTH ON PAWPAW ROAD FOR 1.0 MILE TO A GRAVELED ROAD
 HU1602'ON THE LEFT AND THE AZIMUTH MARK.  CONTINUE SOUTH ON THE
 HU1602'GRAVELED ROAD FOR 0.25 TO MR. CONNERS DRIVEWAY ON THE LEFT,
 HU1602'EAST, SIDE OF THE ROAD.  TURN LEFT AND GO EAST ON THE
 HU1602'DRIVEWAY FOR 0.1 MILE TO THE STATION AS DESCRIBED.
 HU1602'
 HU1602'THE STATION MARK, A STANDARD REFERENCE MARK DISK STAMPED CONNER
 HU1602'NO 5 1932, IS SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT
 HU1602'ABOUT 2 INCHES BELOW THE SURFACE OF THE GROUND.  IT IS 26.5 FEET
 HU1602'NORTH-NORTHEAST OF THE SOUTHWEST CORNER OF A LARGE BARN, 15.5
 HU1602'FEET SOUTH OF A MAPLE TREE AND 12.0 FEET EAST OF A CULTIVATED
 HU1602'FIELD.
 HU1602'
 HU1602'REFERENCE MARK 1, A STANDARD DISK STAMPED CONNER NO 1 1932, IS
 HU1602'SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING
 HU1602'ABOUT 8 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 600.0
 HU1602'FEET EAST OF THE CENTERLINE OF A BLACKTOP ROAD, 5.0 FEET WEST OF
 HU1602'A DRAINAGE DITCH AND 2.0 FEET EAST OF A CULTIVATED FIELD.
 HU1602'
 HU1602'REFERENCE MARK 4, A STANDARD DISK STAMPED CONNER NO 4 1932, IS
 HU1602'SET IN THE TOP OF A 10-INCH CONCRETE CYLINDER PROJECTING ABOUT 4
 HU1602'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 67.0 FEET SOUTH OF
 HU1602'THE SOUTHEAST CORNER OF A BARN, 14.5 FEET NORTH OF A FIELD ROAD
 HU1602'LEADING TO A FARM HOUSE AND 4.7 FEET NORTH-NORTHWEST OF A PINE
 HU1602'TREE.
 HU1602'
 HU1602'THE AZIMUTH MARK, A STANDARD DISK STAMPED CONNER 1932 RESET 1956,
 HU1602'IS SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT FLUSH
 HU1602'WITH THE SURFACE OF THE GROUND.  IT IS 48.0 FEET EAST OF A
 HU1602'TELEPHONE POLE, 29.0 FEET NORTH-NORTHEAST OF A T-INTERSECTION,
 HU1602'29.0 FEET EAST OF THE CENTERLINE OF A BLACKTOP ROAD AND 1.5 FEET
 HU1602'EAST OF A STANDARD METAL WITNESS POST AND MARKER.
 HU1602'
 HU1602'HEIGHT OF LIGHT ABOVE STATION MARK 34.00 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2590 ***********************************************************************
 HU2590  DESIGNATION -  CONNER RM 6
 HU2590  PID         -  HU2590
 HU2590  STATE/COUNTY-  MD/WORCESTER
 HU2590  COUNTRY     -  US
 HU2590  USGS QUAD   -  PUBLIC LANDING (2016)
 HU2590
 HU2590                         *CURRENT SURVEY CONTROL
 HU2590  ______________________________________________________________________
 HU2590* NAD 83(2011) POSITION- 38 08 50.01938(N) 075 19 08.02849(W)   ADJUSTED
 HU2590* NAD 83(2011) ELLIP HT-   -23.698 (meters)        (04/11/25)   ADJUSTED
 HU2590* NAD 83(2011) EPOCH   -  2010.00
 HU2590* NAVD 88 ORTHO HEIGHT -    12.584 (meters)       41.29  (feet) ADJUSTED
 HU2590  ______________________________________________________________________
 HU2590  GEOID HEIGHT    -        -36.276 (meters)                     GEOID18
 HU2590  NAD 83(2011) X  -  1,272,854.636 (meters)                     COMP
 HU2590  NAD 83(2011) Y  - -4,858,360.861 (meters)                     COMP
 HU2590  NAD 83(2011) Z  -  3,918,294.023 (meters)                     COMP
 HU2590  LAPLACE CORR    -         -0.62  (seconds)                    DEFLEC18
 HU2590  DYNAMIC HEIGHT  -         12.576 (meters)       41.26  (feet) COMP
 HU2590  MODELED GRAVITY -    979,982.4   (mgal)                       NAVD 88
 HU2590
 HU2590  VERT ORDER      -  SECOND    CLASS I
 HU2590
 HU2590  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2590  Standards:
 HU2590         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2590            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2590  -------------------------------------------------------------------
 HU2590  NETWORK    0.54   1.59           0.23   0.21   0.81      0.08759609
 HU2590  -------------------------------------------------------------------
 HU2590  Click here for local accuracies and other accuracy information.
 HU2590
 HU2590.The horizontal coordinates were established by GPS observations
 HU2590.and adjusted by the MD DEPT OF TRANSP in April 2025.
 HU2590
 HU2590.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2590.been affixed to the stable North American tectonic plate. See 
 HU2590.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2590
 HU2590.The horizontal coordinates are valid at the epoch date displayed above
 HU2590.which is a decimal equivalence of Year/Month/Day.
 HU2590
 HU2590.The orthometric height was determined by differential leveling and
 HU2590.adjusted by the NATIONAL GEODETIC SURVEY
 HU2590.in June 2006.
 HU2590
 HU2590.No vertical observational check was made to the station.
 HU2590
 HU2590.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2590.GEOID18 height accuracy estimate available here.
 HU2590
 HU2590.Click photographs - Photos may exist for this station.
 HU2590
 HU2590.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2590
 HU2590.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2590
 HU2590.The ellipsoidal height was determined by GPS observations
 HU2590.and is referenced to NAD 83.
 HU2590
 HU2590.The dynamic height is computed by dividing the NAVD 88
 HU2590.geopotential number by the normal gravity value computed on the
 HU2590.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2590.degrees latitude (g = 980.6199 gals.).
 HU2590
 HU2590.The modeled gravity was interpolated from observed gravity values.
 HU2590
 HU2590. The following values were computed from the NAD 83(2011) position.
 HU2590
 HU2590;                    North         East     Units Scale Factor Converg.
 HU2590;SPC MD       -    54,701.603   547,355.850   MT  1.00003009   +1 03 18.4
 HU2590;SPC MD       -   179,466.84  1,795,783.32   sFT  1.00003009   +1 03 18.4
 HU2590;UTM  18      - 4,222,198.465   472,057.746   MT  0.99960962   -0 11 49.1
 HU2590
 HU2590!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2590!SPC MD       -   1.00000372  x   1.00003009  =   1.00003381
 HU2590!UTM  18      -   1.00000372  x   0.99960962  =   0.99961334
 HU2590
 HU2590_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7205722198(NAD 83)
 HU2590
 HU2590                          SUPERSEDED SURVEY CONTROL
 HU2590
 HU2590  NAD 83(1993)-  38 08 50.02270(N)    075 19 08.02719(W) AD(       ) 2
 HU2590  NAD 83(1991)-  38 08 50.02206(N)    075 19 08.02760(W) AD(       ) 2
 HU2590  NAD 83(1986)-  38 08 50.01242(N)    075 19 08.05996(W) AD(       ) 2
 HU2590  NGVD 29 (03/28/90)   11.9    (m)           39.     (f) VERT ANG       
 HU2590
 HU2590.Superseded values are not recommended for survey control.
 HU2590
 HU2590.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2590.See file dsdata.pdf to determine how the superseded data were derived.
 HU2590
 HU2590_MARKER: DR = REFERENCE MARK DISK
 HU2590_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2590_STAMPING: CONNER 1932 NO 6 1985
 HU2590_MARK LOGO: NGS
 HU2590_PROJECTION: RECESSED 5 CENTIMETERS
 HU2590_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2590_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2590+STABILITY: SURFACE MOTION
 HU2590_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2590+SATELLITE: SATELLITE OBSERVATIONS - January 01, 2019
 HU2590
 HU2590  HISTORY     - Date     Condition        Report By
 HU2590  HISTORY     - 1985     MONUMENTED       NGS
 HU2590  HISTORY     - 20031217 GOOD             MDSHA
 HU2590  HISTORY     - 20190101 GOOD             ARCSHE
 HU2590
 HU2590                          STATION DESCRIPTION
 HU2590
 HU2590'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 HU2590'THE MARK IS LOCATED ABOUT 7.25 KM (4.50 MI) SOUTHEAST OF SNOW HILL, 2
 HU2590'KM (1.25 MI) SOUTH OF SPENCE AND IN A FARM YARD.  OWNERSHIP--CARLTON
 HU2590'F. CONNER, ROUTE 3, BOX 101, SNOW HILL, MARYLAND.  TELEPHONE
 HU2590'NUMBER301-632-0904.
 HU2590'TO REACH THE MARK FROM THE POST OFFICE AT SNOW HILL, GO EAST ON STATE
 HU2590'HIGHWAY 12 FOR 0.15 KM (0.10 MI) TO A CROSSROADS.  TURN LEFT AND GO
 HU2590'NORTH ON STATE HIGHWAY 394 FOR 0.25 KM (0.15 MI) TO A ROAD RIGHT.
 HU2590'TURN RIGHT AND GO EAST ON STATE HIGHWAY 365 FOR 1.6 KM (1.00 MI) TO
 HU2590'U.S. HIGHWAY 113.  CONTINUE EAST ON STATE HIGHWAY 365 FOR 5.8 KM
 HU2590'(3.60 MI) TO A ROAD RIGHT.  TURN RIGHT AND GO SOUTHERLY ON PAW PAW
 HU2590'CREEK ROAD FOR 2.0 KM (1.25 MI) TO A ROAD LEFT.  TURN LEFT AND GO
 HU2590'EASTERLY ON A FARM ROAD FOR 0.05 KM (0.05 MI) TO THE MARK ON THE LEFT.
 HU2590'THE MARK IS SET IN THE TOP OF A 12-INCH ROUND CONCRETE POST RECESSED
 HU2590'0.05 M (0.2 FT) BELOW GROUND.  IT IS 16.6 M (54.5 FT) NORTH OF THE
 HU2590'NORTHWEST CORNER OF MR. CONNERS HOME, 28.5 M (93.5 FT) WEST-NORTHWEST
 HU2590'OF THE NORTHWEST CORNER OF A FARM SHED, 20.9 M (68.6 FT) NORTHWEST OF
 HU2590'A POWERLINE LIGHT POLE AND 19.7 M (64.6 FT) NORTHEAST OF A 14-INCH
 HU2590'MAPLE TREE AND ABOUT 0.9 M (3.0 FT) LOWER THAN STATION CONNER 1932.
 HU2590
 HU2590                          STATION RECOVERY (2003)
 HU2590
 HU2590'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 HU2590'RECOVERED AS DESCRIBED.
 HU2590
 HU2590                          STATION RECOVERY (2019)
 HU2590
 HU2590'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HU2590'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2591 ***********************************************************************
 HU2591  DESIGNATION -  CONNER RM 7
 HU2591  PID         -  HU2591
 HU2591  STATE/COUNTY-  MD/WORCESTER
 HU2591  COUNTRY     -  US
 HU2591  USGS QUAD   -  PUBLIC LANDING (2016)
 HU2591
 HU2591                         *CURRENT SURVEY CONTROL
 HU2591  ______________________________________________________________________
 HU2591* NAD 83(1993) POSITION- 38 08 53.79898(N) 075 19 12.66954(W)   NO CHECK
 HU2591* NAVD 88 ORTHO HEIGHT -    11.478 (meters)       37.66  (feet) ADJUSTED
 HU2591  ______________________________________________________________________
 HU2591  GEOID HEIGHT    -        -36.274 (meters)                     GEOID18
 HU2591  LAPLACE CORR    -         -0.61  (seconds)                    DEFLEC18
 HU2591  DYNAMIC HEIGHT  -         11.471 (meters)       37.63  (feet) COMP
 HU2591  MODELED GRAVITY -    979,982.5   (mgal)                       NAVD 88
 HU2591
 HU2591  HORZ ORDER      -  THIRD
 HU2591  VERT ORDER      -  SECOND    CLASS I
 HU2591
 HU2591.The horizontal coordinates were established by classical geodetic methods
 HU2591.and adjusted by the National Geodetic Survey in November 1994.
 HU2591
 HU2591.No horizontal observational check was made to the station.
 HU2591
 HU2591.The orthometric height was determined by differential leveling and
 HU2591.adjusted by the NATIONAL GEODETIC SURVEY
 HU2591.in June 2006.
 HU2591
 HU2591.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2591.GEOID18 height accuracy estimate available here.
 HU2591
 HU2591.Click photographs - Photos may exist for this station.
 HU2591
 HU2591.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2591
 HU2591.The dynamic height is computed by dividing the NAVD 88
 HU2591.geopotential number by the normal gravity value computed on the
 HU2591.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2591.degrees latitude (g = 980.6199 gals.).
 HU2591
 HU2591.The modeled gravity was interpolated from observed gravity values.
 HU2591
 HU2591. The following values were computed from the NAD 83(1993) position.
 HU2591
 HU2591;                    North         East     Units Scale Factor Converg.
 HU2591;SPC MD       -    54,816.043   547,240.716   MT  1.00002986   +1 03 15.5
 HU2591;SPC MD       -   179,842.30  1,795,405.58   sFT  1.00002986   +1 03 15.5
 HU2591;UTM  18      - 4,222,315.345   471,945.188   MT  0.99960969   -0 11 52.0
 HU2591
 HU2591!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2591!SPC MD       -   1.00000389  x   1.00002986  =   1.00003375
 HU2591!UTM  18      -   1.00000389  x   0.99960969  =   0.99961358
 HU2591
 HU2591_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7194522315(NAD 83)
 HU2591
 HU2591                          SUPERSEDED SURVEY CONTROL
 HU2591
 HU2591  NAD 83(1991)-  38 08 53.79835(N)    075 19 12.66994(W) AD(       ) 3
 HU2591  NAD 83(1986)-  38 08 53.78875(N)    075 19 12.70232(W) AD(       ) 3
 HU2591  NGVD 29 (03/28/90)   11.     (m)           36.     (f) VERT ANG       
 HU2591
 HU2591.Superseded values are not recommended for survey control.
 HU2591
 HU2591.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2591.See file dsdata.pdf to determine how the superseded data were derived.
 HU2591
 HU2591_MARKER: DR = REFERENCE MARK DISK
 HU2591_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2591_STAMPING: CONNER 1932 NO 7 1985
 HU2591_MARK LOGO: NGS
 HU2591_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2591_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2591+STABILITY: SURFACE MOTION
 HU2591_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2591+SATELLITE: SATELLITE OBSERVATIONS - December 17, 2003
 HU2591
 HU2591  HISTORY     - Date     Condition        Report By
 HU2591  HISTORY     - 1985     MONUMENTED       NGS
 HU2591  HISTORY     - 20031217 GOOD             MDSHA
 HU2591
 HU2591                          STATION DESCRIPTION
 HU2591
 HU2591'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 HU2591'THE MARK IS LOCATED ABOUT 7.25 KM (4.50 MI) SOUTHEAST OF SNOW HILL, 2
 HU2591'KM (1.25 MI) SOUTH OF SPENCE ON ROAD RIGHT-OF-WAY.
 HU2591'TO REACH THE MARK FROM THE POST OFFICE AT SNOW HILL, GO EAST ON STATE
 HU2591'HIGHWAY 12 FOR 0.15 KM (0.10 MI) TO A CROSSROADS.  TURN LEFT AND GO
 HU2591'NORTH ON STATE HIGHWAY 394 FOR 0.25 KM (0.15 MI) TO A ROAD RIGHT.
 HU2591'TURN RIGHT AND GO EAST ON STATE HIGHWAY 365 FOR 1.6 KM (1.00 MI) TO
 HU2591'U.S. HIGHWAY 113.  CONTINUE EAST ON STATE HIGHWAY 365 FOR 5.8 KM
 HU2591'(3.60 MI) TO A ROAD RIGHT.  TURN RIGHT AND GO SOUTHERLY ON PAW PAW
 HU2591'CREEK ROAD FOR 2.0 KM (1.25 MI) TO THE MARK ON THE RIGHT.
 HU2591'THE MARK IS SET IN THE TOP OF A 12-INCH ROUND CONCRETE POST FLUSH WITH
 HU2591'THE GROUND 8.3 M (27.2 FT) WEST OF THE CENTER OF PAW PAW CREEK ROAD,
 HU2591'1.0 M (3.3 FT) NORTH-NORTHWEST OF A POWERLINE POLE WITH NO NUMBER, 0.3
 HU2591'M (1.0 FT) WEST OF A DRAIN DITCH AND 1.8 M (5.9 FT) SOUTH OF A WITNESS
 HU2591'POST.
 HU2591
 HU2591                          STATION RECOVERY (2003)
 HU2591
 HU2591'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 HU2591'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2095 ***********************************************************************
 HU2095  DESIGNATION -  CONNOR
 HU2095  PID         -  HU2095
 HU2095  STATE/COUNTY-  MD/CAROLINE
 HU2095  COUNTRY     -  US
 HU2095  USGS QUAD   -  DENTON (2017)
 HU2095
 HU2095                         *CURRENT SURVEY CONTROL
 HU2095  ______________________________________________________________________
 HU2095* NAD 83(1991) POSITION- 38 58 37.98222(N) 075 47 30.21584(W)   ADJUSTED
 HU2095* NAVD 88 ORTHO HEIGHT -    14.547 (meters)       47.73  (feet) ADJUSTED
 HU2095  ______________________________________________________________________
 HU2095  GEOID HEIGHT    -        -34.632 (meters)                     GEOID18
 HU2095  LAPLACE CORR    -         -3.47  (seconds)                    DEFLEC18
 HU2095  DYNAMIC HEIGHT  -         14.539 (meters)       47.70  (feet) COMP
 HU2095  MODELED GRAVITY -    980,055.9   (mgal)                       NAVD 88
 HU2095
 HU2095  HORZ ORDER      -  SECOND
 HU2095  VERT ORDER      -  SECOND    CLASS I
 HU2095
 HU2095.The horizontal coordinates were established by classical geodetic methods
 HU2095.and adjusted by the National Geodetic Survey in January 1992.
 HU2095
 HU2095.The orthometric height was determined by differential leveling and
 HU2095.adjusted by the NATIONAL GEODETIC SURVEY
 HU2095.in December 2004.
 HU2095
 HU2095.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2095.GEOID18 height accuracy estimate available here.
 HU2095
 HU2095.Click photographs - Photos may exist for this station.
 HU2095
 HU2095.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2095
 HU2095.The dynamic height is computed by dividing the NAVD 88
 HU2095.geopotential number by the normal gravity value computed on the
 HU2095.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2095.degrees latitude (g = 980.6199 gals.).
 HU2095
 HU2095.The modeled gravity was interpolated from observed gravity values.
 HU2095
 HU2095. The following values were computed from the NAD 83(1991) position.
 HU2095
 HU2095;                    North         East     Units Scale Factor Converg.
 HU2095;SPC MD       -   146,169.962   504,693.791   MT  0.99995141   +0 45 30.1
 HU2095;SPC MD       -   479,559.28  1,655,816.21   sFT  0.99995141   +0 45 30.1
 HU2095;UTM  18      - 4,314,546.416   431,420.563   MT  0.99965791   -0 29 52.9
 HU2095
 HU2095!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2095!SPC MD       -   1.00000315  x   0.99995141  =   0.99995456
 HU2095!UTM  18      -   1.00000315  x   0.99965791  =   0.99966106
 HU2095
 HU2095:                Primary Azimuth Mark                     Grid Az
 HU2095:SPC MD       -  WHITELEY RESET                           116 45 06.2
 HU2095:UTM  18      -  WHITELEY RESET                           118 00 29.2
 HU2095
 HU2095_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3142014546(NAD 83)
 HU2095
 HU2095|---------------------------------------------------------------------|
 HU2095| PID    Reference Object                     Distance      Geod. Az  |
 HU2095|                                                           dddmmss.s |
 HU2095| HU2094 CONNOR AZ MK                        237.311 METERS 02931     |
 HU2095| DG7520 WHITELEY RESET                      APPROX. 5.8 KM 1173036.3 |
 HU2095| HU2691 CONNOR RM 1                          37.330 METERS 12453     |
 HU2095| HU2685 CONNOR AZ MK 2                      APPROX. 0.5 KM 1561630.5 |
 HU2095| DC7952 CONNOR RM 2                          27.636 METERS 22321     |
 HU2095| HU2692 CONNOR RM 3                          27.614 METERS 22325     |
 HU2095| HU2096 GREENSBORO WATER TANK               APPROX. 1.4 KM 2611842.8 |
 HU2095| HU2097 GREENSBORO PET MILK CO STACK        APPROX. 2.1 KM 2764754.9 |
 HU2095|---------------------------------------------------------------------|
 HU2095
 HU2095                          SUPERSEDED SURVEY CONTROL
 HU2095
 HU2095  NAD 83(1986)-  38 58 37.97493(N)    075 47 30.22875(W) AD(       ) 2
 HU2095  NAD 27      -  38 58 37.56800(N)    075 47 31.47300(W) AD(       ) 2
 HU2095
 HU2095.Superseded values are not recommended for survey control.
 HU2095
 HU2095.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2095.See file dsdata.pdf to determine how the superseded data were derived.
 HU2095
 HU2095_MARKER: DS = TRIANGULATION STATION DISK
 HU2095_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2095_STAMPING: CONNOR 1934
 HU2095_MARK LOGO: CGS
 HU2095_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2095_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2095+STABILITY: SURFACE MOTION
 HU2095_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2095+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2003
 HU2095
 HU2095  HISTORY     - Date     Condition        Report By
 HU2095  HISTORY     - 1934     MONUMENTED       CGS
 HU2095  HISTORY     - 1934     GOOD             CGS
 HU2095  HISTORY     - 1943     GOOD             CGS
 HU2095  HISTORY     - 1954     GOOD             LOCENG
 HU2095  HISTORY     - 1956     GOOD             CGS
 HU2095  HISTORY     - 19800824 GOOD             NGS
 HU2095  HISTORY     - 20021028 GOOD             MDSHA
 HU2095  HISTORY     - 20031122 GOOD             USPSQD
 HU2095
 HU2095                          STATION DESCRIPTION
 HU2095
 HU2095'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU2095'THIS SECOND-ORDER STATION IS ON THE PROPERTY OF MR. RICHARD
 HU2095'CONNOR, 137.1 FEET W OF THE NW CORNER OF MR. CONNORS HOME, 76
 HU2095'FEET S OF A 36-INCH (SOUTHWESTERNMOST) MAPLE TREE IN THE FRONT
 HU2095'YARD OF HARRY KARCHER, 32 FEET SE OF THE CENTER LINE OF A
 HU2095'GRAVEL ROAD, 12 FEET WSW OF THE W EDGE OF A PRIVET HEDGE, AND
 HU2095'8 INCHES SW OF A FENCE LINE.  THE MARK PROJECTS 6 INCHES ABOVE
 HU2095'GROUND AND IS STAMPED CONNOR 1934.
 HU2095'
 HU2095'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HU2095'BRONZE DISKS SET IN CONCRET.
 HU2095'
 HU2095'REFERENCE MARK NO.1 IS 122.42 FEET SW OF THE STATION, 55.1
 HU2095'FEET N OF A 14-INCH WALNUT TREE, 38.3 SW OF THE NW CORNER OF
 HU2095'MR. CONNORS HOME, AND IN A FENCE LINE.  THE MARK PROJECTS 6
 HU2095'INCHES ABOVE GROUND AND IS STAMPED CONNOR NO.1 1934.
 HU2095'
 HU2095'REFERENCE MARK NO.2 IS 90.67 FEET WSW OF THE STATION, 15
 HU2095'FEET ESE OF THE CENTER LINE OF A DIRT ROAD, AND 2 FEET N OF A
 HU2095'BRACED-FENCE POST.  THE MARK PROJECTS 6 INCHES ABOVE GROUND
 HU2095'AND IS STAMPED CONNOR NO.2 1934.
 HU2095'
 HU2095'AZIMUTH MARK IS APPROXIMATELY 0.15 MILE NE OF THE STATION,
 HU2095'ALONG A CHICKEN-YARD FENCE, ABOUT 7 PACES SW OF A TELEPHONE
 HU2095'POLE, AND ABOUT 4 PACES N OF THE CENTER LINE OF A GRAVEL
 HU2095'ROAD.  THE MARK IS STAMPED CONNOR AZ. MK. 1934.  PROJECTS 6
 HU2095'INCHES ABOVE GROUND.
 HU2095'
 HU2095'TO REACH THE STATION FROM THE CAROLINE COUNTY BANK IN
 HU2095'GREENSBORO, TAKE U.S. HIGHWAY 313 TO DENTON (E) FOR ABOUT 0.4
 HU2095'MILE TO A THREE FORK ROAD.  TAKE THE EXTREME LEFT FORK ON A
 HU2095'GRAVEL ROAD (SIGN BOYCE MILL ROAD) AND GO ABOUT 0.5 MILE TO
 HU2095'THE STATION ON THE RIGHT SIDE OF THE ROAD.
 HU2095'
 HU2095'A 103-FOOT TOWER WILL CLEAR ALL LINES OBSERVED.
 HU2095
 HU2095                          STATION RECOVERY (1934)
 HU2095
 HU2095'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934
 HU2095'RECOVERED IN GOOD CONDITION.
 HU2095
 HU2095                          STATION RECOVERY (1943)
 HU2095
 HU2095'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HU2095'RECOVERED AS DESCRIBED.  DESCRIPTION ADEQUATE EXCEPT FOR THE
 HU2095'FOLLOWING DISCREPANCIES--
 HU2095'
 HU2095'1.  IN THE PHRASE 32 FEET SE OF THE CENTER LINE OF A GRAVEL
 HU2095'ROAD THE GRAVEL ROAD IS NOW A MACADAM ROAD.
 HU2095'
 HU2095'2.  DELETE THE PHRASE 8 INCHES SW OF A FENCELINE.
 HU2095'
 HU2095'3.  REFERENCE MARK 1 IS 122.42 FEET SE OF THE STATION, NOT SW.
 HU2095'
 HU2095'4.  IN DESCRIPTION OF REFERENCE MARK 1, DELETE PHRASE IN A
 HU2095'FENCELINE.
 HU2095'
 HU2095'5.  IN DESCRIPTION OF AZIMUTH MARK, DELETE PHRASE ALONG A
 HU2095'CHICKEN-YARD FENCE.
 HU2095'
 HU2095'6.  DELETE 7 PACES SW OF A TELEPHONE POLE AND INSERT INSTEAD
 HU2095'3 FEET SW OF TELEPHONE BRACE POLE 13X.
 HU2095'
 HU2095'7.  CHANGE GRAVEL ROAD TO MACADAM ROAD IN DESCRIPTION OF
 HU2095'AZIMUTH MARK.
 HU2095'
 HU2095'A THOROUGH SEARCH WAS MADE BY A THREE-MAN PARTY FOR REFERENCE
 HU2095'MARK 2.  HOWEVER, THIS MARK COULD NOT BE FOUND.  IT IS
 HU2095'RECOMMENDED THIS REFERENCE MARK BE CLASSIFIED AS LOST.
 HU2095
 HU2095                          STATION RECOVERY (1954)
 HU2095
 HU2095'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1954 (HW)
 HU2095'REFERENCE--THE EASTERN SHORE PUBLIC SERVICE COMPANY OF
 HU2095'MARYLANDS LETTER BY HARRY WILLIAMSON, TRANSMISSION ENGINEER,
 HU2095'DATED JULY 2, 1954--
 HU2095'
 HU2095'THE STATION AND REFERENCE MARK NO. 1 APPEARED TO BE UNDISTRUBED,
 HU2095'REFERENCE MARK NO. 2 REPORTED IN 1943 NOT FOUND AND RECOMMENDED
 HU2095'LOST, WAS FOUND BUT HAD BEEN DISTRUBED.
 HU2095'
 HU2095'REFERENCE MARK NO. 3 (AZIMUTH MARK) APPEARED TO HAVE BEEN
 HU2095'TIPPED SLIGHTLY AND THE ANGLE BETWEEN IT AND THE GREENSBORO BLACK
 HU2095'(NOW SILVER) WATER TANK WAS FOUND TO BE APPROXIMATELY 0.7 FT LESS
 HU2095'THAN IS INDICATED IN THE DATA SUPPLIED BY YOU FOR THESE POINTS.
 HU2095
 HU2095                          STATION RECOVERY (1956)
 HU2095
 HU2095'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (WFD)
 HU2095'STATION MARK, REFERENCE MARK 1 AND THE AZIMUTH MARK WERE ALL
 HU2095'RECOVERED AND FOUND TO BE IN GOOD CONDITION AND AS DESCRIBED.
 HU2095'
 HU2095'REFERENCE MARK 2 RECOVERED AND IT IS COVERED OVER WITH ABOUT
 HU2095'3-INCHES OF DIRT.  IT HAS BEEN HIT BY MACHINERY AND IS LEANING
 HU2095'TOWARD THE EAST.
 HU2095'
 HU2095'THE DESCRIPTION TO REACH THE STATION IS ADEQUATE.
 HU2095
 HU2095                          STATION RECOVERY (1980)
 HU2095
 HU2095'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980
 HU2095'THE STATION MARK AND REFERENCE MARK ONE WERE RECOVERED AND FOUND IN
 HU2095'GOOD CONDITION.  REFERENCE MARK TWO AND THE AZIMUTH MARK WERE FOUND
 HU2095'DESTROYED.  A NEW REFERENCE MARK THREE WAS ESTABLISHED NEAR WHERE THE
 HU2095'OLD REFERENCE MARK TWO WAS LOCATED.  A NEW AZIMUTH MARK TWO WAS ALSO
 HU2095'ESTABLISHED.  A SHORTER DISTANCE OF 0.06 FT WAS NOTED TO REFERENCE
 HU2095'MARK ONE, THE REASON FOR THE DIFFERENCE COULD NOT BE DETERMINED.
 HU2095'A COMPLETE NEW DESCRIPTION FOLLOWS.
 HU2095'THE STATION IS LOCATED ABOUT 12.1 KM (7.50 MI) NORTH-NORTHEAST OF
 HU2095'DENTON, 4.8 KM (3.00 MI) WEST OF THE MARYLAND-DELAWARE BOUNDARY AND
 HU2095'1.61 KM (1.00 MI) NORTHEAST OF GREENSBORO.  OWNERSHIP--MR. DAVID
 HU2095'WELLS.
 HU2095'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 313 AND 314 IN THE
 HU2095'EAST EDGE OF GREENSBORO, GO EAST ON STATE HIGHWAY 314 FOR 30 M
 HU2095'(98.4 FT) TO A FORK.  BEAR LEFT AND GO NORTHEAST ON BOYCE MILL ROAD
 HU2095'FOR 0.8 KM (0.50 MI) TO THE STATION.
 HU2095'THE DISK IS SET IN THE TOP OF A 0.3 M (1.0 FT) SQUARE CONCRETE POST
 HU2095'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 29.87 M
 HU2095'(98.0 FT) SOUTH OF THE SOUTHWEST CORNER OF A TWO STORY WHITE FRAME
 HU2095'HOUSE, 10.06 M (33.0 FT) SOUTHEAST OF THE CENTER OF BOYCE MILL ROAD,
 HU2095'6.71 M (22.0 FT) SOUTH OF A POWERLINE POLE NUMBERED 41532 15460, 1.83
 HU2095'M (6.0 FT) SOUTHWEST OF THE CENTER OF A SAND ROAD LEADING SOUTHEAST TO
 HU2095'A WHITE TWO STORY FARM HOUSE AND 0.91 M (3.0 FT) SOUTHEAST OF A
 HU2095'WITNESS POST.
 HU2095
 HU2095                          STATION RECOVERY (2002)
 HU2095
 HU2095'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2095'LOCATED ABOUT 7.5 MI (12.07 KM) NORTH-NORTHEAST OF DENTON, 3.0 MI
 HU2095'(4.83 KM) WEST OF THE MARYLAND-DELAWARE BOUNDARY, AND 1.0 MI (1.61 KM)
 HU2095'EAST OF GREENSBORO.  TO REACH THE STATION FROM THE INTERSECTION OF
 HU2095'STATE HIGHWAYS 313 AND 314, EAST OF GREENSBORO, GO EAST ALONG STATE
 HU2095'HIGHWAY 314 FOR 0.3 MI (0.48 KM) TO WOTHERS ROAD. TURN LEFT AND GO
 HU2095'SOUTH FOR 0.15 MI (0.24 KM) TO BOYCE MILL ROAD. TURN RIGHT AND GO
 HU2095'NORTHWEST ALONG BOYCE MILL ROAD FOR 0.2 MI (0.32 KM) TO THE STATION ON
 HU2095'THE RIGHT.  THE STATION IS A STANDARD DISK STAMPED CONNOR 1934 SET IN
 HU2095'THE TOP OF A 12 INCH (30 CM) SQUARE CONCRETE MONUMENT WHICH PROJECTS 3
 HU2095'INCHES. IT IS 33 FT (10.1 M) SOUTHEAST OF THE CENTER OF THE ROAD, 97.7
 HU2095'FT (29.8 M) SOUTH AND ACROSS THE ROAD FROM THE SOUTHEAST CORNER OF THE
 HU2095'PORCH TO A 2 STORY HOUSE, 81 FT (24.7 M) WEST OF POWER POLE
 HU2095'11540-15454, 22.2 FT (6.8 M) SOUTH OF POWER POLE 41532-15460, AND 7 FT
 HU2095'(2.1 M) SOUTHWEST OF THE CENTER OF A DRIVEWAY.
 HU2095
 HU2095                          STATION RECOVERY (2003)
 HU2095
 HU2095'RECOVERY NOTE BY US POWER SQUADRON 2003 (KN)
 HU2095'FROM THE INTERSECTION OF 3/3 AND 314 PROCEED E FOR .3 MILE TO A FORK
 HU2095'(WOTHERS ROAD, BEAR LEFT AND PROCEED NE TO BOYCE MILL ROAD, TURN RIGHT
 HU2095'AND PROCEED .2 MILE TO THE STATION ON THE RIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2094 ***********************************************************************
 HU2094  DESIGNATION -  CONNOR AZ MK
 HU2094  PID         -  HU2094
 HU2094  STATE/COUNTY-  MD/CAROLINE
 HU2094  COUNTRY     -  US
 HU2094  USGS QUAD   -  DENTON (2017)
 HU2094
 HU2094                         *CURRENT SURVEY CONTROL
 HU2094  ______________________________________________________________________
 HU2094* NAD 83(1991) POSITION- 38 58 44.67874(N) 075 47 25.35797(W)   ADJUSTED
 HU2094* NAVD 88 ORTHO HEIGHT -    14.    (meters)       46.    (feet) SCALED
 HU2094  ______________________________________________________________________
 HU2094  GEOID HEIGHT    -        -34.627 (meters)                     GEOID18
 HU2094  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 HU2094  HORZ ORDER      -  SECOND
 HU2094
 HU2094.The horizontal coordinates were established by classical geodetic methods
 HU2094.and adjusted by the National Geodetic Survey in January 1992.
 HU2094
 HU2094.The orthometric height was scaled from a topographic map.
 HU2094
 HU2094.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2094.GEOID18 height accuracy estimate available here.
 HU2094
 HU2094.Click photographs - Photos may exist for this station.
 HU2094
 HU2094.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2094
 HU2094. The following values were computed from the NAD 83(1991) position.
 HU2094
 HU2094;                    North         East     Units Scale Factor Converg.
 HU2094;SPC MD       -   146,377.986   504,807.971   MT  0.99995147   +0 45 33.1
 HU2094;SPC MD       -   480,241.78  1,656,190.82   sFT  0.99995147   +0 45 33.1
 HU2094;UTM  18      - 4,314,751.827   431,539.241   MT  0.99965771   -0 29 49.9
 HU2094
 HU2094!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2094!SPC MD       -   1.00000327  x   0.99995147  =   0.99995474
 HU2094!UTM  18      -   1.00000327  x   0.99965771  =   0.99966098
 HU2094
 HU2094_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3153914751(NAD 83)
 HU2094
 HU2094                          SUPERSEDED SURVEY CONTROL
 HU2094
 HU2094  NAD 83(1986)-  38 58 44.67141(N)    075 47 25.37088(W) AD(       ) 2
 HU2094  NAD 27      -  38 58 44.26500(N)    075 47 26.61500(W) AD(       ) 2
 HU2094
 HU2094.Superseded values are not recommended for survey control.
 HU2094
 HU2094.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2094.See file dsdata.pdf to determine how the superseded data were derived.
 HU2094
 HU2094_MARKER: DZ = AZIMUTH MARK DISK
 HU2094_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2094_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2094+STABILITY: SURFACE MOTION
 HU2094
 HU2094  HISTORY     - Date     Condition        Report By
 HU2094  HISTORY     - 1934     MONUMENTED       CGS
 HU2094  HISTORY     - 20031203 MARK NOT FOUND   USPSQD
 HU2094
 HU2094                          STATION DESCRIPTION
 HU2094
 HU2094'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 HU2094'AZIMUTH MARK IS APPROXIMATELY 0.15 MILE NE OF THE STATION,
 HU2094'ALONG A CHICKEN-YARD FENCE, ABOUT 7 PACES SW OF A TELEPHONE
 HU2094'POLE, AND ABOUT 4 PACES N OF THE CENTER LINE OF A GRAVEL
 HU2094'ROAD.  THE MARK IS STAMPED CONNOR AZ. MK. 1934.  PROJECTS 6
 HU2094'INCHES ABOVE GROUND.
 HU2094'
 HU2094'TO REACH THE STATION FROM THE CAROLINE COUNTY BANK IN
 HU2094'GREENSBORO, TAKE U.S. HIGHWAY 313 TO DENTON (E) FOR ABOUT 0.4
 HU2094'MILE TO A THREE FORK ROAD.  TAKE THE EXTREME LEFT FORK ON A
 HU2094'GRAVEL ROAD (SIGN BOYCE MILL ROAD) AND GO ABOUT 0.5 MILE TO
 HU2094'TO STATION CONNOR ON THE RIGHT.
 HU2094
 HU2094                          STATION RECOVERY (2003)
 HU2094
 HU2094'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HU2094'SEE HU2095 DESCRIPTION BY NGS 1980 WHICH REPORTS RM2 AND AZIMUTH MARKS
 HU2094'AS DESTROYED.
 HU2094'
 HU2094'SEE HU2685, CONNOR 1934 AZ2 1980.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2685 ***********************************************************************
 HU2685  DESIGNATION -  CONNOR AZ MK 2
 HU2685  PID         -  HU2685
 HU2685  STATE/COUNTY-  MD/CAROLINE
 HU2685  COUNTRY     -  US
 HU2685  USGS QUAD   -  DENTON (2017)
 HU2685
 HU2685                         *CURRENT SURVEY CONTROL
 HU2685  ______________________________________________________________________
 HU2685* NAD 83(1991) POSITION- 38 58 21.87358(N) 075 47 21.14668(W)   NO CHECK
 HU2685* NAVD 88 ORTHO HEIGHT -    14.197 (meters)       46.58  (feet) ADJUSTED
 HU2685  ______________________________________________________________________
 HU2685  GEOID HEIGHT    -        -34.652 (meters)                     GEOID18
 HU2685  LAPLACE CORR    -         -3.45  (seconds)                    DEFLEC18
 HU2685  DYNAMIC HEIGHT  -         14.189 (meters)       46.55  (feet) COMP
 HU2685  MODELED GRAVITY -    980,055.0   (mgal)                       NAVD 88
 HU2685
 HU2685  HORZ ORDER      -  THIRD
 HU2685  VERT ORDER      -  SECOND    CLASS I
 HU2685
 HU2685.The horizontal coordinates were established by classical geodetic methods
 HU2685.and adjusted by the National Geodetic Survey in January 1992.
 HU2685
 HU2685.No horizontal observational check was made to the station.
 HU2685
 HU2685.The orthometric height was determined by differential leveling and
 HU2685.adjusted by the NATIONAL GEODETIC SURVEY
 HU2685.in December 2004.
 HU2685
 HU2685.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2685.GEOID18 height accuracy estimate available here.
 HU2685
 HU2685.Click photographs - Photos may exist for this station.
 HU2685
 HU2685.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2685
 HU2685.The dynamic height is computed by dividing the NAVD 88
 HU2685.geopotential number by the normal gravity value computed on the
 HU2685.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2685.degrees latitude (g = 980.6199 gals.).
 HU2685
 HU2685.The modeled gravity was interpolated from observed gravity values.
 HU2685
 HU2685. The following values were computed from the NAD 83(1991) position.
 HU2685
 HU2685;                    North         East     Units Scale Factor Converg.
 HU2685;SPC MD       -   145,676.172   504,918.650   MT  0.99995127   +0 45 35.8
 HU2685;SPC MD       -   477,939.24  1,656,553.94   sFT  0.99995127   +0 45 35.8
 HU2685;UTM  18      - 4,314,047.961   431,634.477   MT  0.99965755   -0 29 47.0
 HU2685
 HU2685!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2685!SPC MD       -   1.00000321  x   0.99995127  =   0.99995448
 HU2685!UTM  18      -   1.00000321  x   0.99965755  =   0.99966076
 HU2685
 HU2685_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3163414047(NAD 83)
 HU2685
 HU2685                          SUPERSEDED SURVEY CONTROL
 HU2685
 HU2685  NAD 83(1986)-  38 58 21.86617(N)    075 47 21.15988(W) AD(       ) 3
 HU2685
 HU2685.Superseded values are not recommended for survey control.
 HU2685
 HU2685.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2685.See file dsdata.pdf to determine how the superseded data were derived.
 HU2685
 HU2685_MARKER: DZ = AZIMUTH MARK DISK
 HU2685_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU2685_SP_SET: HIGHLINE LEG FOUNDATION
 HU2685_STAMPING: CONNOR 1934 AZ 2 1980
 HU2685_MARK LOGO: NGS
 HU2685_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2685_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2685_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2685+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2003
 HU2685
 HU2685  HISTORY     - Date     Condition        Report By
 HU2685  HISTORY     - 1980     MONUMENTED       NGS
 HU2685  HISTORY     - 20021028 GOOD             MDSHA
 HU2685  HISTORY     - 20031122 GOOD             USPSQD
 HU2685
 HU2685                          STATION DESCRIPTION
 HU2685
 HU2685'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 HU2685'THIS POINT IS LOCATED ABOUT 12.1 KM (7.50 MI) NORTH-NORTHEAST OF
 HU2685'DENTON, 4.8 KM (3.00 MI) WEST OF THE MARYLAND-DELAWARE BOUNDARY AND
 HU2685'1.61 KM (1.00 MI) NORTHEAST OF GREENSBORO.  OWNERSHIP--DELMARVA POWER
 HU2685'AND LIGHT COMPANY.
 HU2685'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 313 AND 314 IN THE
 HU2685'EAST EDGE OF GREENSBORO, GO EAST ON STATE HIGHWAY 314 FOR 0.8 KM
 HU2685'(0.50 MI) TO A LARGE HIGHLINE TOWER ON THE LEFT AND THE MARK.
 HU2685'THE DISK IS SET IN A DRILL HOLE IN THE CONCRETE FOUNDATION FOR THE
 HU2685'NORTHWEST LEG OF THE HIGHLINE TOWER AND IT PROJECTS ABOUT 1.0 M
 HU2685'(3.3 FT) ABOVE THE SURFACE OF THE GROUND.  IT IS 35.05 M (115.0 FT)
 HU2685'NORTH OF THE CENTER OF STATE HIGHWAY 314, 7.62 M (25.0 FT) EAST OF THE
 HU2685'WEST EDGE OF A CULTIVATED FIELD AND 0.3 M (1.0 FT) NORTH OF A POINT
 HU2685'WHERE THE STEEL HIGHLINE LEG IS ANCHORED TO THE CONCRETE FOUNDATION.
 HU2685
 HU2685                          STATION RECOVERY (2002)
 HU2685
 HU2685'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2685'RECOVERED AS DESCRIBED.
 HU2685
 HU2685                          STATION RECOVERY (2003)
 HU2685
 HU2685'RECOVERY NOTE BY US POWER SQUADRON 2003 (KN)
 HU2685'DISK IS AT GROUND LEVEL, IMBEDDED IN THE FOUNDATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2691 ***********************************************************************
 HU2691  DESIGNATION -  CONNOR RM 1
 HU2691  PID         -  HU2691
 HU2691  STATE/COUNTY-  MD/CAROLINE
 HU2691  COUNTRY     -  US
 HU2691  USGS QUAD   -  DENTON (2017)
 HU2691
 HU2691                         *CURRENT SURVEY CONTROL
 HU2691  ______________________________________________________________________
 HU2691* NAD 83(1986) POSITION- 38 58 37.29   (N) 075 47 28.94   (W)   HD_HELD1
 HU2691* NAVD 88 ORTHO HEIGHT -    14.754 (meters)       48.41  (feet) ADJUSTED
 HU2691  ______________________________________________________________________
 HU2691  GEOID HEIGHT    -        -34.633 (meters)                     GEOID18
 HU2691  DYNAMIC HEIGHT  -         14.746 (meters)       48.38  (feet) COMP
 HU2691  MODELED GRAVITY -    980,055.9   (mgal)                       NAVD 88
 HU2691
 HU2691  VERT ORDER      -  SECOND    CLASS I
 HU2691
 HU2691.The horizontal coordinates were determined by differentially corrected
 HU2691.hand held GPS observations or other comparable positioning techniques
 HU2691.and have an estimated accuracy of +/- 3 meters.
 HU2691
 HU2691.The orthometric height was determined by differential leveling and
 HU2691.adjusted by the NATIONAL GEODETIC SURVEY
 HU2691.in December 2004.
 HU2691
 HU2691.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2691.GEOID18 height accuracy estimate available here.
 HU2691
 HU2691.Click photographs - Photos may exist for this station.
 HU2691
 HU2691.The dynamic height is computed by dividing the NAVD 88
 HU2691.geopotential number by the normal gravity value computed on the
 HU2691.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2691.degrees latitude (g = 980.6199 gals.).
 HU2691
 HU2691.The modeled gravity was interpolated from observed gravity values.
 HU2691
 HU2691;                    North         East    Units  Estimated Accuracy
 HU2691;SPC MD       -   146,149.0     504,724.8     MT  (+/- 3 meters HH1 GPS) 
 HU2691
 HU2691_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3145114524(NAD 83)
 HU2691
 HU2691                          SUPERSEDED SURVEY CONTROL
 HU2691
 HU2691.No superseded survey control is available for this station.
 HU2691
 HU2691_MARKER: DR = REFERENCE MARK DISK
 HU2691_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2691_STAMPING: CONNOR 1934 NO 1
 HU2691_MARK LOGO: CGS
 HU2691_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2691_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2691+STABILITY: SURFACE MOTION
 HU2691_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2691+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2002
 HU2691
 HU2691  HISTORY     - Date     Condition        Report By
 HU2691  HISTORY     - 1934     MONUMENTED       CGS
 HU2691  HISTORY     - 19800824 GOOD             NGS
 HU2691  HISTORY     - 20021028 GOOD             MDSHA
 HU2691
 HU2691                          STATION DESCRIPTION
 HU2691
 HU2691'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 HU2691'THIS POINT IS LOCATED ABOUT 12.1 KM (7.50 MI) NORTH-NORTHEAST OF
 HU2691'DENTON, 4.8 KM (3.00 MI) WEST OF THE MARYLAND-DELAWARE BOUNDARY AND
 HU2691'1.61 KM (1.00 MI) NORTHEAST OF GREENSBORO.  OWNERSHIP--MR. DAVID
 HU2691'WELLS.
 HU2691'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 313 AND 314 IN THE
 HU2691'EAST EDGE OF GREENSBORO, GO EAST ON STATE HIGHWAY 314 FOR 30 M
 HU2691'(98.4 FT) TO A FORK.  BEAR LEFT AND GO NORTHEAST ON BOYCE MILL ROAD
 HU2691'FOR 0.8 KM (0.50 MI) TO THE MARKER.
 HU2691'THE DISK IS SET IN THE TOP OF A 0.3 M (1.0 FT) SQUARE CONCRETE POST
 HU2691'WHICH PROJECTS 0.03 M (0.1 FT) ABOVE THE SURFACE OF THE GROUND.  IT IS
 HU2691'47.24 M (155.0 FT) SOUTHEAST OF THE CENTER OF BOYCE MILL ROAD, 13.72 M
 HU2691'(45.0 FT) SOUTHEAST OF A POWERLINE POLE NUMBERED 41540 15454, 11.58 M
 HU2691'(38.0 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF A WHITE TWO STORY FARM
 HU2691'HOUSE AND, 2.4 M (7.9 FT) SOUTHWEST OF THE CENTER OF A SAND ROAD
 HU2691'LEADING TO THE FARM HOUSE.
 HU2691'THE MARK IS ABOUT 0.3 M (1.0 FT) HIGHER THAN THE STATION MARK.
 HU2691
 HU2691                          STATION RECOVERY (2002)
 HU2691
 HU2691'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2691'THE MARK IS LOCATED ABOUT 0.7 MI (1.13 KM) EAST-NORTHEAST OF
 HU2691'GREENSBORO, 6.7 MI (10.78 KM) NORTH-NORTHEAST OF DENTON AND 5.4 MI
 HU2691'(8.69 KM) EAST-NORTHEAST OF RIDGELY.  TO REACH THE STATION FROM THE
 HU2691'INTERSECTION OF STATE HIGHWAY 314 AND STATE HIGHWAY 313, GO EAST ALONG
 HU2691'STATE HIGHWAY 314 FOR 0.3 MI (0.48 KM) TO WOTHERS ROAD.  TURN LEFT AND
 HU2691'GO NORTHWEST FOR 0.15 MI (0.24 KM) TO BOYCE MILL ROAD. TURN RIGHT AND
 HU2691'GO NORTHEAST FOR 0.2 MI (0.32 KM) TO THE STATION ON THE RIGHT.  THE
 HU2691'STATION IS A COAST AND GEODETIC REFERENCE MARK DISK SET IN THE TOP OF
 HU2691'A 12 INCH (30 CM) SQUARE CONCRETE MONUMENT WHICH PROJECTS ABOUT 2
 HU2691'INCHES.  IT IS 154.7 FT (47.2 M) SOUTHEAST OF THE CENTER LINE OF THE
 HU2691'ROAD, 122.2 FT (37.2 M) SOUTHEAST OF THE STATION, 137.6 FT (41.9 M)
 HU2691'SOUTHEAST OF POWER POLE 41532-15460, 44.5 FT (13.6 M) SOUTHEAST OF
 HU2691'POWER POLE 41540-15454, 38.2 FT (11.6 M) SOUTHWEST OF THE NORTHWEST
 HU2691'CORNER OF A TWO STORY DWELLING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2692 ***********************************************************************
 HU2692  DESIGNATION -  CONNOR RM 3
 HU2692  PID         -  HU2692
 HU2692  STATE/COUNTY-  MD/CAROLINE
 HU2692  COUNTRY     -  US
 HU2692  USGS QUAD   -  DENTON (2017)
 HU2692
 HU2692                         *CURRENT SURVEY CONTROL
 HU2692  ______________________________________________________________________
 HU2692* NAD 83(1986) POSITION- 38 58 37.33   (N) 075 47 31.01   (W)   HD_HELD1
 HU2692* NAVD 88 ORTHO HEIGHT -    13.956 (meters)       45.79  (feet) ADJUSTED
 HU2692  ______________________________________________________________________
 HU2692  GEOID HEIGHT    -        -34.632 (meters)                     GEOID18
 HU2692  DYNAMIC HEIGHT  -         13.948 (meters)       45.76  (feet) COMP
 HU2692  MODELED GRAVITY -    980,056.0   (mgal)                       NAVD 88
 HU2692
 HU2692  VERT ORDER      -  SECOND    CLASS I
 HU2692
 HU2692.The horizontal coordinates were determined by differentially corrected
 HU2692.hand held GPS observations or other comparable positioning techniques
 HU2692.and have an estimated accuracy of +/- 3 meters.
 HU2692
 HU2692.The orthometric height was determined by differential leveling and
 HU2692.adjusted by the NATIONAL GEODETIC SURVEY
 HU2692.in December 2004.
 HU2692
 HU2692.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2692.GEOID18 height accuracy estimate available here.
 HU2692
 HU2692.Click photographs - Photos may exist for this station.
 HU2692
 HU2692.The dynamic height is computed by dividing the NAVD 88
 HU2692.geopotential number by the normal gravity value computed on the
 HU2692.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2692.degrees latitude (g = 980.6199 gals.).
 HU2692
 HU2692.The modeled gravity was interpolated from observed gravity values.
 HU2692
 HU2692;                    North         East    Units  Estimated Accuracy
 HU2692;SPC MD       -   146,149.6     504,674.9     MT  (+/- 3 meters HH1 GPS) 
 HU2692
 HU2692_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3140114526(NAD 83)
 HU2692
 HU2692                          SUPERSEDED SURVEY CONTROL
 HU2692
 HU2692.No superseded survey control is available for this station.
 HU2692
 HU2692_MARKER: DR = REFERENCE MARK DISK
 HU2692_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2692_STAMPING: CONNOR 1934 NO 3 1980
 HU2692_MARK LOGO: CGS
 HU2692_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2692_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2692+STABILITY: SURFACE MOTION
 HU2692_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2692+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2002
 HU2692
 HU2692  HISTORY     - Date     Condition        Report By
 HU2692  HISTORY     - 1980     MONUMENTED       NGS
 HU2692  HISTORY     - 20021028 GOOD             MDSHA
 HU2692
 HU2692                          STATION DESCRIPTION
 HU2692
 HU2692'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 HU2692'THIS POINT IS LOCATED ABOUT 12.1 KM (7.50 MI) NORTH-NORTHEAST OF
 HU2692'DENTON, 4.8 KM (3.00 MI) WEST OF THE MARYLAND-DELAWARE BOUNDARY AND
 HU2692'1.61 KM (1.00 MI) NORTHEAST OF GREENSBORO.  OWNERSHIP--MR. DAVID
 HU2692'WELLS.
 HU2692'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 313 AND 314 IN THE
 HU2692'EAST EDGE OF GREENSBORO, GO EAST ON STATE HIGHWAY 314 FOR 30 M
 HU2692'(98.4 FT) TO A FORK.  BEAR LEFT AND GO NORTHEAST ON BOYCE MILL ROAD
 HU2692'FOR 0.8 KM (0.50 MI) TO THE MARKER.
 HU2692'THE DISK IS SET IN THE TOP OF A O.3 M (1.0 FT) CONCRETE MONUMENT WHICH
 HU2692'IS FLUSH WITH THE SURACE OF THE GROUND.  IT IS 28.04 M (92.0 FT)
 HU2692'SOUTHWEST OF THE CENTER OF A SAND DRIVE LEADING TO A TWO STORY FARM
 HU2692'HOUSE, 20.73 M (68.0 FT) NORTHEAST OF A POWERLINE POLE NUMBERED 41532
 HU2692'15445, 4.88 M (16.0 FT) SOUTHEAST OF THE CENTER OF BOYCE MILL ROAD AND
 HU2692'0.3 M (1.0 FT) NORTHWEST OF A WITNESS POST.
 HU2692'THIS MARK IS ABOUT 0.3 M (1.0 FT) HIGHER THAN THE STATION MARK.
 HU2692
 HU2692                          STATION RECOVERY (2002)
 HU2692
 HU2692'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2692'THE MARK IS LOCATED ABOUT 0.7 MI (1.13 KM) EAST-NORTHEAST OF
 HU2692'GREENSBORO, 6.7 MI (10.78 KM) NORTH-NORTHEAST OF DENTON AND 5.4 MI
 HU2692'(8.69 KM) EAST-NORTHEAST OF RIDGELY.  TO REACH THE STATION FROM THE
 HU2692'INTERSECTION OF STATE HIGHWAY 314 AND STATE HIGHWAY 313, GO EAST ALONG
 HU2692'STATE HIGHWAY 314 FOR 0.3 MI (0.48 KM) TO WOTHERS ROAD.  TURN LEFT AND
 HU2692'GO NORTHWEST FOR 0.15 MI (0.24 KM) TO BOYCE MILL ROAD. TURN RIGHT AND
 HU2692'GO NORTHEAST FOR 0.2 MI (0.32 KM) TO THE STATION ON THE RIGHT.  THE
 HU2692'STATION IS A COAST AND GEODETIC REFERENCE MARK DISK SET IN THE TOP OF
 HU2692'A 12 SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS
 HU2692'16.0 FT (4.9 M) SOUTHEAST OF THE CENTER LINE OF THE ROAD, 104.5 FT
 HU2692'(31.9 M) SOUTHWEST OF POWER POLE 41532-15460, 90.5 FT (27.6 M)
 HU2692'SOUTHWEST OF THE STATION, 70.0 FT (21.3 M) NORTHEAST OF POWER POLE
 HU2692'41522-15445.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4757 ***********************************************************************
 JV4757  DESIGNATION -  CONO
 JV4757  PID         -  JV4757
 JV4757  STATE/COUNTY-  MD/WASHINGTON
 JV4757  COUNTRY     -  US
 JV4757  USGS QUAD   -  CLEAR SPRING (2016)
 JV4757
 JV4757                         *CURRENT SURVEY CONTROL
 JV4757  ______________________________________________________________________
 JV4757* NAD 83(1991) POSITION- 39 41 01.48950(N) 077 55 01.45840(W)   ADJUSTED
 JV4757* NAVD 88 ORTHO HEIGHT -   208.    (meters)      682.    (feet) SCALED
 JV4757  ______________________________________________________________________
 JV4757  GEOID HEIGHT    -        -34.284 (meters)                     GEOID18
 JV4757  LAPLACE CORR    -         -2.32  (seconds)                    DEFLEC18
 JV4757  HORZ ORDER      -  SECOND
 JV4757
 JV4757.The horizontal coordinates were established by classical geodetic methods
 JV4757.and adjusted by the National Geodetic Survey in January 1992.
 JV4757
 JV4757.The orthometric height was scaled from a topographic map.
 JV4757
 JV4757.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4757.GEOID18 height accuracy estimate available here.
 JV4757
 JV4757.Click photographs - Photos may exist for this station.
 JV4757
 JV4757.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4757
 JV4757. The following values were computed from the NAD 83(1991) position.
 JV4757
 JV4757;                    North         East     Units Scale Factor Converg.
 JV4757;SPC MD       -   224,311.521   321,325.074   MT  1.00004926   -0 34 32.1
 JV4757;SPC MD       -   735,928.72  1,054,214.01   sFT  1.00004926   -0 34 32.1
 JV4757;SPC PA S     -    38,922.015   585,666.813   MT  1.00004840   -0 06 30.2
 JV4757;SPC PA S     -   127,696.64  1,921,475.20   sFT  1.00004840   -0 06 30.2
 JV4757;SPC WV N     -   132,612.772   735,778.861   MT  0.99994125   +1 00 34.4
 JV4757;SPC WV N     -   435,080.40  2,413,967.81   sFT  0.99994125   +1 00 34.4
 JV4757;UTM  18      - 4,396,725.591   249,834.573   MT  1.00037056   -1 51 49.2
 JV4757;UTM  17      - 4,397,201.674   764,391.612   MT  1.00046070   +1 58 11.1
 JV4757
 JV4757!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4757!SPC MD       -   0.99997278  x   1.00004926  =   1.00002204
 JV4757!SPC PA S     -   0.99997278  x   1.00004840  =   1.00002118
 JV4757!SPC WV N     -   0.99997278  x   0.99994125  =   0.99991403
 JV4757!UTM  18      -   0.99997278  x   1.00037056  =   1.00034333
 JV4757!UTM  17      -   0.99997278  x   1.00046070  =   1.00043347
 JV4757
 JV4757:                Primary Azimuth Mark                     Grid Az
 JV4757:SPC MD       -  CONO AZ MK                               021 24 18.9
 JV4757:SPC PA S     -  CONO AZ MK                               020 56 17.0
 JV4757:SPC WV N     -  CONO AZ MK                               019 49 12.4
 JV4757:UTM  18      -  CONO AZ MK                               022 41 36.0
 JV4757:UTM  17      -  CONO AZ MK                               018 51 35.7
 JV4757
 JV4757_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ4983496725(NAD 83)
 JV4757
 JV4757|---------------------------------------------------------------------|
 JV4757| PID    Reference Object                     Distance      Geod. Az  |
 JV4757|                                                           dddmmss.s |
 JV4757| CK6853 CONO AZ MK                                         0204946.8 |
 JV4757| CK6854 CONO RM 1                             8.493 METERS 02757     |
 JV4757| JV4756 CLEAR SPRING ST JOHNS REF CH        APPROX. 3.2 KM 1971113.4 |
 JV4757| JV4755 CLEAR SPRING ST PETERS E L CH       APPROX. 3.5 KM 2003747.3 |
 JV4757| CK6855 CONO RM 2                            16.786 METERS 24503     |
 JV4757|---------------------------------------------------------------------|
 JV4757
 JV4757                          SUPERSEDED SURVEY CONTROL
 JV4757
 JV4757  NAD 83(1986)-  39 41 01.48860(N)    077 55 01.46669(W) AD(       ) 2
 JV4757  NAD 27      -  39 41 01.14600(N)    077 55 02.47600(W) AD(       ) 2
 JV4757
 JV4757.Superseded values are not recommended for survey control.
 JV4757
 JV4757.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4757.See file dsdata.pdf to determine how the superseded data were derived.
 JV4757
 JV4757_MARKER: DS = TRIANGULATION STATION DISK
 JV4757_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4757_STAMPING: CONO 1955
 JV4757_MARK LOGO: CGS
 JV4757_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4757+STABILITY: SURFACE MOTION
 JV4757
 JV4757  HISTORY     - Date     Condition        Report By
 JV4757  HISTORY     - 1955     MONUMENTED       CGS
 JV4757  HISTORY     - 1967     GOOD             CGS
 JV4757  HISTORY     - 20080427 GOOD             GEOCAC
 JV4757
 JV4757                          STATION DESCRIPTION
 JV4757
 JV4757'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4757'THE STATION IS 11 MILES WEST-NORTHWEST OF HAGERSTOWN, 2-1/4 MILES
 JV4757'NORTH-NORTHEAST OF CLEAR SPRING, 150 FEET EAST OF A CONCRETE BLOCK
 JV4757'FARM HOME, 18 FEET NORTHEAST OF A LONE 36-INCH LOCUST TREE, 18
 JV4757'FEET SOUTHEAST OF THE CENTER OF A PAVED ROAD AND 4 FEET NORTHWEST
 JV4757'OF A POWERLINE POLE AND FENCE.
 JV4757'
 JV4757'TO REACH THE STATION FROM THE JUNCTION OF THE FORT FREDERICK
 JV4757'ROAD AND U.S. HIGHWAY 40 IN CLEAR SPRING, GO NORTH ON A PAVED ROAD
 JV4757'FOR 0.3 MILE TO A FORK, TAKE THE LEFT ROAD AND GO 0.55 MILE TO A
 JV4757'FORK, TAKE THE LEFT ROAD AND GO 0.4 MILE TO A FORK, TAKE THE RIGHT
 JV4757'ROAD AND GO 0.9 MILE TO THE TOP OF THE HILL AND THE STATION ON
 JV4757'THE RIGHT, CONTINUE ON THE PAVED ROAD FOR 0.25 MILE TO THE
 JV4757'AZIMUTH MARK ON THE LEFT AS DESCRIBED.
 JV4757'
 JV4757'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 JV4757'CONO 1955.
 JV4757'
 JV4757'REFERENCE MARK 1 IS 20 FEET SOUTHEAST OF THE CENTER OF THE PAVED
 JV4757'ROAD AND 1 FOOT NORTH OF A FENCE.  THE MARK IS FLUSH WITH THE
 JV4757'GROUND, AND THE DISK IS STAMPED CONO NO 1 1955.
 JV4757'
 JV4757'REFERENCE MARK 2 IS 20 FEET NORTHWEST OF THE CENTER OF THE PAVED
 JV4757'ROAD AND 17 FEET NORTHEAST OF THE CENTER OF A DRIVEWAY.  THE MARK
 JV4757'IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED CONO NO 2 1955.
 JV4757'
 JV4757'THE AZIMUTH MARK IS 18 FEET NORTHWEST OF THE CENTER OF THE PAVED
 JV4757'ROAD, 16 FEET NORTHEAST OF THE CENTER OF A FARM ROAD, 9 FEET WEST
 JV4757'OF A TELEPHONE POLE AND 1 FOOT WEST OF A 4 IN X 4 IN WHITE WITNESS
 JV4757'POST.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 JV4757'CONO 1955.
 JV4757'
 JV4757'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV4757
 JV4757                          STATION RECOVERY (1967)
 JV4757
 JV4757'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JCB)
 JV4757'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO BE
 JV4757'IN GOOD CONDITION.  THE ORIGINAL STATION DESCRIPTION IS ADEQUATE.
 JV4757'
 JV4757'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4757'2-1/4 MILES NORTH NORTHEAST OF CLEAR SPRING.
 JV4757
 JV4757                          STATION RECOVERY (2008)
 JV4757
 JV4757'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JV4757'STATION AND RM 1 FOUND IN GOOD CONDITION SLIGHTLY BELOW GROUND LEVEL.
 JV4757'
 JV4757'RM 2 WAS NOT LOCATED.  NOTE - THE FENCE HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4812 ***********************************************************************
 JV4812  DESIGNATION -  CONOWINGO BAPTIST CHURCH SPIRE
 JV4812  PID         -  JV4812
 JV4812  STATE/COUNTY-  MD/CECIL
 JV4812  COUNTRY     -  US
 JV4812  USGS QUAD   -  CONOWINGO DAM (2016)
 JV4812
 JV4812                         *CURRENT SURVEY CONTROL
 JV4812  ______________________________________________________________________
 JV4812* NAD 83(1991) POSITION- 39 40 53.72607(N) 076 09 47.97187(W)   ADJUSTED
 JV4812  ______________________________________________________________________
 JV4812  GEOID HEIGHT    -        -32.910 (meters)                     GEOID18
 JV4812  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 JV4812  HORZ ORDER      -  THIRD
 JV4812
 JV4812.The horizontal coordinates were established by classical geodetic methods
 JV4812.and adjusted by the National Geodetic Survey in January 1992.
 JV4812
 JV4812.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4812.GEOID18 height accuracy estimate available here.
 JV4812
 JV4812.Click photographs - Photos may exist for this station.
 JV4812
 JV4812.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4812
 JV4812. The following values were computed from the NAD 83(1991) position.
 JV4812
 JV4812;                    North         East     Units Scale Factor Converg.
 JV4812;SPC MD       -   224,005.834   471,780.097   MT  1.00004873   +0 31 30.5
 JV4812;SPC MD       -   734,925.81  1,547,831.87   sFT  1.00004873   +0 31 30.5
 JV4812;SPC PA S     -    39,891.856   736,118.809   MT  1.00004890   +1 01 45.9
 JV4812;SPC PA S     -   130,878.53  2,415,083.13   sFT  1.00004890   +1 01 45.9
 JV4812;UTM  18      - 4,393,064.588   400,237.915   MT  0.99972253   -0 44 34.3
 JV4812
 JV4812_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0023793064(NAD 83)
 JV4812
 JV4812                          SUPERSEDED SURVEY CONTROL
 JV4812
 JV4812  NAD 83(1986)-  39 40 53.72046(N)    076 09 47.97606(W) AD(       ) 3
 JV4812  NAD 27      -  39 40 53.34100(N)    076 09 49.15100(W) AD(       ) 3
 JV4812
 JV4812.Superseded values are not recommended for survey control.
 JV4812
 JV4812.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4812.See file dsdata.pdf to determine how the superseded data were derived.
 JV4812
 JV4812_MARKER: 90 = CHURCH SPIRE
 JV4812
 JV4812  HISTORY     - Date     Condition        Report By
 JV4812  HISTORY     - 1947     FIRST OBSERVED   CGS
 JV4812
 JV4812                          STATION DESCRIPTION
 JV4812
 JV4812'DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (CRR)
 JV4812'THE STATION IS LOCATED ABOUT 0.3 MILE NORTH OF CONOWINGO DAM, ON
 JV4812'A HIGH POINT OF LAND OVERLOOKING THE RIVER.  IT IS A WHITE FRAME
 JV4812'BUILDING ABOUT 40 X 60 FEET.  THE POINT OBSERVED WAS THE SPIRE
 JV4812'ATOP THE SQUARE BELL TOWER.  TO REACH FROM THE NORTHEAST END OF
 JV4812'CONOWINGO DAM, GO NORTHEAST ON U.S. HIGHWAY 1 FOR 1.0 MILE, TURN
 JV4812'LEFT ON U.S. HIGHWAY 222 AND GO 0.3 MILE TO TOP OF HILL AND THE
 JV4812'STATION ON THE LEFT AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4807 ***********************************************************************
 JV4807  DESIGNATION -  CONOWINGO NE
 JV4807  PID         -  JV4807
 JV4807  STATE/COUNTY-  MD/CECIL
 JV4807  COUNTRY     -  US
 JV4807  USGS QUAD   -  CONOWINGO DAM (2016)
 JV4807
 JV4807                         *CURRENT SURVEY CONTROL
 JV4807  ______________________________________________________________________
 JV4807* NAD 83(1991) POSITION- 39 40 00.28604(N) 076 10 11.14099(W)   ADJUSTED
 JV4807* NAVD 88 ORTHO HEIGHT -    17.    (meters)       56.    (feet) SCALED
 JV4807  ______________________________________________________________________
 JV4807  GEOID HEIGHT    -        -32.908 (meters)                     GEOID18
 JV4807  LAPLACE CORR    -         -2.08  (seconds)                    DEFLEC18
 JV4807  HORZ ORDER      -  THIRD
 JV4807
 JV4807.The horizontal coordinates were established by classical geodetic methods
 JV4807.and adjusted by the National Geodetic Survey in January 1992.
 JV4807
 JV4807.The orthometric height was scaled from a topographic map.
 JV4807
 JV4807.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4807.GEOID18 height accuracy estimate available here.
 JV4807
 JV4807.Click photographs - Photos may exist for this station.
 JV4807
 JV4807.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4807
 JV4807. The following values were computed from the NAD 83(1991) position.
 JV4807
 JV4807;                    North         East     Units Scale Factor Converg.
 JV4807;SPC MD       -   222,352.628   471,242.955   MT  1.00004511   +0 31 15.9
 JV4807;SPC MD       -   729,501.91  1,546,069.59   sFT  1.00004511   +0 31 15.9
 JV4807;SPC PA S     -    38,233.981   735,596.235   MT  1.00005237   +1 01 30.9
 JV4807;SPC PA S     -   125,439.32  2,413,368.65   sFT  1.00005237   +1 01 30.9
 JV4807;UTM  18      - 4,391,424.204   399,664.510   MT  0.99972394   -0 44 48.3
 JV4807
 JV4807!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4807!SPC MD       -   1.00000254  x   1.00004511  =   1.00004765
 JV4807!SPC PA S     -   1.00000254  x   1.00005237  =   1.00005491
 JV4807!UTM  18      -   1.00000254  x   0.99972394  =   0.99972648
 JV4807
 JV4807:                Primary Azimuth Mark                     Grid Az
 JV4807:SPC MD       -  CONOWINGO SW                             202 06 43.4
 JV4807:SPC PA S     -  CONOWINGO SW                             201 36 28.4
 JV4807:UTM  18      -  CONOWINGO SW                             203 22 47.6
 JV4807
 JV4807_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9966491424(NAD 83)
 JV4807
 JV4807|---------------------------------------------------------------------|
 JV4807| PID    Reference Object                     Distance      Geod. Az  |
 JV4807|                                                           dddmmss.s |
 JV4807| JV4808 CONOWINGO SW                        APPROX. 1.5 KM 2023759.3 |
 JV4807|---------------------------------------------------------------------|
 JV4807
 JV4807                          SUPERSEDED SURVEY CONTROL
 JV4807
 JV4807  NAD 83(1986)-  39 40 00.28038(N)    076 10 11.14528(W) AD(       ) 3
 JV4807  NAD 27      -  39 39 59.90100(N)    076 10 12.31900(W) AD(       ) 3
 JV4807
 JV4807.Superseded values are not recommended for survey control.
 JV4807
 JV4807.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4807.See file dsdata.pdf to determine how the superseded data were derived.
 JV4807
 JV4807_MARKER: I = METAL ROD
 JV4807_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4807_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4807+STABILITY: SURFACE MOTION
 JV4807
 JV4807  HISTORY     - Date     Condition        Report By
 JV4807  HISTORY     - 1947     MONUMENTED       CGS
 JV4807  HISTORY     - 1963     GOOD             MDDT
 JV4807
 JV4807                          STATION DESCRIPTION
 JV4807
 JV4807'DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (CRR)
 JV4807'THE STATION IS LOCATED NEAR THE NORTHEAST END OF THE CONOWINGO
 JV4807'DAM ACROSS THE SUSQUEHANNA RIVER.  IT IS A STATION OF THE CONOWINGO
 JV4807'POWER PLANT SURVEYS.  THE NORTHEAST STATION OF THE POWERHOUSE
 JV4807'ALIGNMENT REFERENCE LINE.  IT IS 0.5 MILE NORTHEAST OF THE
 JV4807'POWERHOUSE ON THE DAM, 200 FEET SOUTH OF THE NORTHEAST END OF THE
 JV4807'DAM AND 100 FEET DOWNSTREAM FROM ITS BASE.  THE MARK IS A
 JV4807'PYRAMIDAL SHAPED CONCRETE BLOCK ABOUT 12 INCHES SQUARE WITH A
 JV4807'PIECE OF BRASS SHAFTING FOR A DISK.  THIS SHAFTING IS COVERED
 JV4807'WITH A CAST IRON CAP TO PROTECT IT.
 JV4807'
 JV4807'TO REACH THE STATION FROM THE SOUTHWEST END OF CONOWINGO DAM,
 JV4807'GO NORTHEAST ACROSS THE DAM FOR 0.85 MILES, TURN RIGHT ON
 JV4807'U.S. HIGHWAY 222 FOR 0.15 MILES TO AN IRON GATE IN THE FENCE
 JV4807'ON THE RIGHT.  PASS THROUGH THE GATE, BEARING RIGHT FOR 0.15
 JV4807'MILES TO THE STATION NEAR THE FOOT OF THE DAM AS DESCRIBED.
 JV4807
 JV4807                          STATION RECOVERY (1963)
 JV4807
 JV4807'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 JV4807'STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.  A
 JV4807'PERMANENT TARGET HAS BEEN ERECTED OVER THE STATION BY THE
 JV4807'CONOWINGO POWER PLANT SURVEY DEPT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4808 ***********************************************************************
 JV4808  DESIGNATION -  CONOWINGO SW
 JV4808  PID         -  JV4808
 JV4808  STATE/COUNTY-  MD/HARFORD
 JV4808  COUNTRY     -  US
 JV4808  USGS QUAD   -  CONOWINGO DAM (2016)
 JV4808
 JV4808                         *CURRENT SURVEY CONTROL
 JV4808  ______________________________________________________________________
 JV4808* NAD 83(1991) POSITION- 39 39 16.51895(N) 076 10 34.74820(W)   ADJUSTED
 JV4808* NAVD 88 ORTHO HEIGHT -    47.    (meters)      154.    (feet) SCALED
 JV4808  ______________________________________________________________________
 JV4808  GEOID HEIGHT    -        -32.903 (meters)                     GEOID18
 JV4808  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 JV4808  HORZ ORDER      -  THIRD
 JV4808
 JV4808.The horizontal coordinates were established by classical geodetic methods
 JV4808.and adjusted by the National Geodetic Survey in January 1992.
 JV4808
 JV4808.The orthometric height was scaled from a topographic map.
 JV4808
 JV4808.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4808.GEOID18 height accuracy estimate available here.
 JV4808
 JV4808.Click photographs - Photos may exist for this station.
 JV4808
 JV4808.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4808
 JV4808. The following values were computed from the NAD 83(1991) position.
 JV4808
 JV4808;                    North         East     Units Scale Factor Converg.
 JV4808;SPC MD       -   220,997.700   470,692.445   MT  1.00004220   +0 31 01.1
 JV4808;SPC MD       -   725,056.62  1,544,263.46   sFT  1.00004220   +0 31 01.1
 JV4808;SPC PA S     -    36,874.248   735,057.661   MT  1.00005527   +1 01 15.6
 JV4808;SPC PA S     -   120,978.26  2,411,601.68   sFT  1.00005527   +1 01 15.6
 JV4808;UTM  18      - 4,390,082.215   399,084.341   MT  0.99972538   -0 45 02.7
 JV4808
 JV4808!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4808!SPC MD       -   0.99999783  x   1.00004220  =   1.00004003
 JV4808!SPC PA S     -   0.99999783  x   1.00005527  =   1.00005310
 JV4808!UTM  18      -   0.99999783  x   0.99972538  =   0.99972321
 JV4808
 JV4808:                Primary Azimuth Mark                     Grid Az
 JV4808:SPC MD       -  CONOWINGO NE                             022 06 43.1
 JV4808:SPC PA S     -  CONOWINGO NE                             021 36 28.6
 JV4808:UTM  18      -  CONOWINGO NE                             023 22 46.9
 JV4808
 JV4808_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9908490082(NAD 83)
 JV4808
 JV4808|---------------------------------------------------------------------|
 JV4808| PID    Reference Object                     Distance      Geod. Az  |
 JV4808|                                                           dddmmss.s |
 JV4808| JV4807 CONOWINGO NE                        APPROX. 1.5 KM 0223744.2 |
 JV4808|---------------------------------------------------------------------|
 JV4808
 JV4808                          SUPERSEDED SURVEY CONTROL
 JV4808
 JV4808  NAD 83(1986)-  39 39 16.51325(N)    076 10 34.75251(W) AD(       ) 3
 JV4808  NAD 27      -  39 39 16.13400(N)    076 10 35.92500(W) AD(       ) 3
 JV4808
 JV4808.Superseded values are not recommended for survey control.
 JV4808
 JV4808.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4808.See file dsdata.pdf to determine how the superseded data were derived.
 JV4808
 JV4808_MARKER: I = METAL ROD
 JV4808_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4808_PROJECTION: PROJECTING 8 CENTIMETERS
 JV4808_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4808+STABILITY: SURFACE MOTION
 JV4808
 JV4808  HISTORY     - Date     Condition        Report By
 JV4808  HISTORY     - 1947     MONUMENTED       CGS
 JV4808  HISTORY     - 1963     GOOD             MDDT
 JV4808  HISTORY     - 20010303 MARK NOT FOUND   USPSQD
 JV4808  HISTORY     - 20250701 GOOD             INDIV
 JV4808
 JV4808                          STATION DESCRIPTION
 JV4808
 JV4808'DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (CRR)
 JV4808'THE STATION IS LOCATED NEAR THE SOUTHWEST END OF THE CONOWINGO
 JV4808'DAM ACROSS THE SUSQUEHANNA RIVER.  IT IS A STATION OF THE
 JV4808'CONOWINGO POWER PLANT SURVEYS.  THE SOUTHWEST STATION OF THE
 JV4808'POWERHOUSE ALIGNEMENT REFERENCE LINE.  IT IS ABOUT 250 YARDS
 JV4808'SOUTHWEST OF THE POWER PLANT, ALONG THE NORTH SIDE OF THE SHELF
 JV4808'ROAD THAT LEADS UP FROM THE BASE OF THE PLANT TO THE RESIDENTIAL
 JV4808'SECTION.  THE STATION IS LOCATED 10 FEET NORTH OF THE
 JV4808'APPROXIMATE CENTERLINE OF THIS ROAD.  THE MARK IS A PYRAMIDAL
 JV4808'SHAPED CONCRETE BLOCK ABOUT 12 INCHES SQUARE WITH A PIECE OF
 JV4808'BRASS SHAFTING FOR A DISK.  THE SHAFTING IS COVERED BY A
 JV4808'CAST IRON CAP FOR PROTECTION.
 JV4808'
 JV4808'TO REACH THE STATION FROM THE SOUTHWEST END OF CONOWINGO DAM, GO
 JV4808'SOUTHWEST ALONG U.S. ROUTE 1 FOR 0.15 MILE TO A JUNCTION
 JV4808'WITH STATE ROUTE 160.  GO SOUTH ALONG STATE ROUTE 160 FOR 0.05
 JV4808'MILE TO A PRIVATE DRIVE ON THE LEFT.  FOLLOW THIS DRIVE BACK
 JV4808'TOWARD THE RIVER FOR 0.15 MILE TO THE STATION ON THE LEFT AS
 JV4808'DESCRIBED.
 JV4808'
 JV4808'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4808
 JV4808                          STATION RECOVERY (1963)
 JV4808
 JV4808'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 JV4808'STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV4808
 JV4808                          STATION RECOVERY (2001)
 JV4808
 JV4808'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV4808'MAKE THE FOLLOWING CHANGES TO THE DESCRIPTION - RT 160 IS NOT
 JV4808'DESIGNATED AS 160.  IT IS NOW APPEARING AS SHURESVILLE ROAD.  THERE IS
 JV4808'NO ACCESS TO THE PRIVATE DRIVE ON LEFT.  IT IS NOW SECURED WITH A
 JV4808'LOCKED GATE TO POWER STATION.
 JV4808
 JV4808                          STATION RECOVERY (2025)
 JV4808
 JV4808'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2025 (AR)
 JV4808'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5539 ***********************************************************************
 JV5539  DESIGNATION -  CONSOL USE 1915
 JV5539  PID         -  JV5539
 JV5539  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5539  COUNTRY     -  US
 JV5539  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5539
 JV5539                         *CURRENT SURVEY CONTROL
 JV5539  ______________________________________________________________________
 JV5539* NAD 83(1991) POSITION- 39 16 34.89023(N) 076 35 32.71417(W)   ADJUSTED
 JV5539* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5539  ______________________________________________________________________
 JV5539  GEOID HEIGHT    -        -32.802 (meters)                     GEOID18
 JV5539  LAPLACE CORR    -         -4.88  (seconds)                    DEFLEC18
 JV5539  HORZ ORDER      -  THIRD
 JV5539
 JV5539.The horizontal coordinates were established by classical geodetic methods
 JV5539.and adjusted by the National Geodetic Survey in January 1992.
 JV5539
 JV5539.The orthometric height was scaled from a topographic map.
 JV5539
 JV5539.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5539.GEOID18 height accuracy estimate available here.
 JV5539
 JV5539.Click photographs - Photos may exist for this station.
 JV5539
 JV5539.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5539
 JV5539. The following values were computed from the NAD 83(1991) position.
 JV5539
 JV5539;                    North         East     Units Scale Factor Converg.
 JV5539;SPC MD       -   178,764.318   435,168.356   MT  0.99997423   +0 15 20.9
 JV5539;SPC MD       -   586,495.93  1,427,714.85   sFT  0.99997423   +0 15 20.9
 JV5539;UTM  18      - 4,348,653.640   362,643.966   MT  0.99983230   -1 00 29.7
 JV5539
 JV5539!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5539!SPC MD       -   1.00000503  x   0.99997423  =   0.99997926
 JV5539!UTM  18      -   1.00000503  x   0.99983230  =   0.99983733
 JV5539
 JV5539:                Primary Azimuth Mark                     Grid Az
 JV5539:SPC MD       -  CAHILL USE 1915                          260 05 39.6
 JV5539:UTM  18      -  CAHILL USE 1915                          261 21 30.2
 JV5539
 JV5539_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6264348653(NAD 83)
 JV5539
 JV5539|---------------------------------------------------------------------|
 JV5539| PID    Reference Object                     Distance      Geod. Az  |
 JV5539|                                                           dddmmss.s |
 JV5539| JV5541 CHESAPEAKE USE 1915                 129.829 METERS 09945     |
 JV5539| JV5488 CAHILL USE 1915                     APPROX. 0.8 KM 2602100.5 |
 JV5539| JV5565 MARYLAND CASUALTY TOWER             APPROX. 2.2 KM 3122710.8 |
 JV5539| JV5534 CHASE USE 1915                      370.728 METERS 31803     |
 JV5539| JV5535 TERMINAL                            454.854 METERS 3392000.0 |
 JV5539|---------------------------------------------------------------------|
 JV5539
 JV5539                          SUPERSEDED SURVEY CONTROL
 JV5539
 JV5539  NAD 83(1986)-  39 16 34.88655(N)    076 35 32.72302(W) AD(       ) 3
 JV5539  NAD 27      -  39 16 34.49600(N)    076 35 33.83300(W) AD(       ) 3
 JV5539  USSD        -  39 16 34.86200(N)    076 35 33.67100(W) AD(       ) 3
 JV5539
 JV5539.Superseded values are not recommended for survey control.
 JV5539
 JV5539.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5539.See file dsdata.pdf to determine how the superseded data were derived.
 JV5539
 JV5539
 JV5539  HISTORY     - Date     Condition        Report By
 JV5539  HISTORY     - 1915     MONUMENTED       CGS
 JV5539  HISTORY     - 1924     GOOD             CGS
 JV5539  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV5539
 JV5539                          STATION DESCRIPTION
 JV5539
 JV5539'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5539'AT THE S SIDE OF THE HARBOR, ON THE LOWER DECK TIMBER WHARF NEAR
 JV5539'THE NW CORNER OF THE PIER OF THE CONSOLIDATED COAL COMPANY.  THE
 JV5539'STATION IS MARKED BY A COPPER NAIL SURROUNDED BY WIRE NAILS.  IT
 JV5539'IS 0.872 METER (2.86 FEET) S OF THE OUTSIDE EDGE OF THE COPING,
 JV5539'1.31 METERS (4.3 FEET) E OF THE OUTSIDE OF THE COPING, AND 1.622
 JV5539'METERS (5.32 FEET) FROM THE NW CORNER OF A POST SUPPORTING THE
 JV5539'UPPER DECK.
 JV5539
 JV5539                          STATION RECOVERY (1975)
 JV5539
 JV5539'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5539'STATION WAS NOT FOUND, PIER REFERRED TO IN THE DESCRIPTION NO
 JV5539'LONGER EXISTS.  RECOMMEND STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3569 ***********************************************************************
 JU3569  DESIGNATION -  CONSTABLE
 JU3569  PID         -  JU3569
 JU3569  STATE/COUNTY-  MD/CECIL
 JU3569  COUNTRY     -  US
 JU3569  USGS QUAD   -  EARLEVILLE (2016)
 JU3569
 JU3569                         *CURRENT SURVEY CONTROL
 JU3569  ______________________________________________________________________
 JU3569* NAD 83(1991) POSITION- 39 25 49.53374(N) 075 59 47.88739(W)   ADJUSTED
 JU3569* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JU3569  ______________________________________________________________________
 JU3569  GEOID HEIGHT    -        -33.377 (meters)                     GEOID18
 JU3569  LAPLACE CORR    -         -1.07  (seconds)                    DEFLEC18
 JU3569  HORZ ORDER      -  SECOND
 JU3569
 JU3569.The horizontal coordinates were established by classical geodetic methods
 JU3569.and adjusted by the National Geodetic Survey in January 1992.
 JU3569
 JU3569.The orthometric height was scaled from a topographic map.
 JU3569
 JU3569.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3569.GEOID18 height accuracy estimate available here.
 JU3569
 JU3569.Click photographs - Photos may exist for this station.
 JU3569
 JU3569.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3569
 JU3569. The following values were computed from the NAD 83(1991) position.
 JU3569
 JU3569;                    North         East     Units Scale Factor Converg.
 JU3569;SPC MD       -   196,265.233   486,386.770   MT  0.99999663   +0 37 47.1
 JU3569;SPC MD       -   643,913.52  1,595,753.93   sFT  0.99999663   +0 37 47.1
 JU3569;UTM  18      - 4,365,017.045   414,224.059   MT  0.99969059   -0 37 59.0
 JU3569
 JU3569!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3569!SPC MD       -   1.00000480  x   0.99999663  =   1.00000143
 JU3569!UTM  18      -   1.00000480  x   0.99969059  =   0.99969539
 JU3569
 JU3569:                Primary Azimuth Mark                     Grid Az
 JU3569:SPC MD       -  CONSTABLE RM 2 AZIMUTH                   115 10 18.8
 JU3569:UTM  18      -  CONSTABLE RM 2 AZIMUTH                   116 26 04.9
 JU3569
 JU3569_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1422465017(NAD 83)
 JU3569
 JU3569|---------------------------------------------------------------------|
 JU3569| PID    Reference Object                     Distance      Geod. Az  |
 JU3569|                                                           dddmmss.s |
 JU3569| CB1378 CONSTABLE RM 1                       15.261 METERS 01703     |
 JU3569| CB1379 CONSTABLE RM 2 AZIMUTH                             1154805.9 |
 JU3569| CB1380 CONSTABLE RM 3                       24.165 METERS 22012     |
 JU3569| JV4860 HOWELL POINT CHAN REAR RNG LT       APPROX. 3.7 KM 2241413.2 |
 JU3569|---------------------------------------------------------------------|
 JU3569
 JU3569                          SUPERSEDED SURVEY CONTROL
 JU3569
 JU3569  NAD 83(1986)-  39 25 49.52615(N)    075 59 47.89375(W) AD(       ) 2
 JU3569  NAD 27      -  39 25 49.13190(N)    075 59 49.09920(W) AD(       ) 2
 JU3569
 JU3569.Superseded values are not recommended for survey control.
 JU3569
 JU3569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3569.See file dsdata.pdf to determine how the superseded data were derived.
 JU3569
 JU3569_MARKER: DS = TRIANGULATION STATION DISK
 JU3569_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3569_STAMPING: CONSTABLE 1933
 JU3569_MARK LOGO: CGS
 JU3569_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3569+STABILITY: SURFACE MOTION
 JU3569
 JU3569  HISTORY     - Date     Condition        Report By
 JU3569  HISTORY     - 1933     MONUMENTED       CGS
 JU3569  HISTORY     - 1937     GOOD             CGS
 JU3569  HISTORY     - 1973     MARK NOT FOUND   NGS
 JU3569
 JU3569                          STATION DESCRIPTION
 JU3569
 JU3569'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JU3569'THIS IS A SECOND-ORDER STATION ON THE CONSTABLE FARM ON E SHORE
 JU3569'OF CHESAPEAKE BAY, 0.2 MILE NE (ACROSS FIELD) FROM CONSTABLE
 JU3569'BARN, ON BLUFF OVER-LOOKING BAY, 24 FEET S OF EDGE OF BLUFF, 39
 JU3569'PACES E OF E END OF A STRIP OF WOODS ON BLUFF AND 47 PACES E OF
 JU3569'E EDGE OF GULLEY IN THE STRIP OF WOODS.  THE MARK IS FLUSH WITH
 JU3569'THE GROUND.
 JU3569'
 JU3569'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE
 JU3569'DISKS SET IN CONCRETE.
 JU3569'
 JU3569'REFERENCE MARK NO.1 IS 8 FEET S OF EDGE OF BLUFF WHERE BLUFF
 JU3569'BEGINS TO SLOPE DOWN, AND 54 PACES E OF E TIP OF WOODS.  IT IS
 JU3569'FLUSH WITH THE GROUND.
 JU3569'
 JU3569'REFERENCE MARK NO.2 THE AZIMUTH MARK, WHICH PROJECTS 3 INCHES
 JU3569'ABOVE GROUND, IS 2 FEET W OF HEDGE RUNNING N FROM GATE ON MAIN
 JU3569'ROAD AT RIGHT-ANGLE TURN IN ROAD NW OF CONSTABLE DWELLING, AND
 JU3569'20 FEET W OF GATE TO HOUSE.
 JU3569'
 JU3569'NOTE--THE AZIMUTH MARK ITSELF WAS NOT VISIBLE FROM A 4-FOOT
 JU3569'STAND OVER THE STATION BUT A LIGHT ON A TRIPOD 4 FEET HIGH OVER
 JU3569'THE AZIMUTH WAS VISIBLE.
 JU3569'
 JU3569'REFERENCE MARK NO.3 PROJECTING 4 INCHES ABOVE GROUND IS 59.30
 JU3569'FEET E OF AN 8-INCH CEDAR IN E TIP OF WOODS, AND 10 FEET S OF
 JU3569'EDGE OF BLUFF.
 JU3569'
 JU3569'TO REACH FROM EARLEVILLE, GO 1.5 MILES ON CONCRETE ROAD TOWARD
 JU3569'CHRYSTAL BEACH, TURN LEFT ON DIRT ROAD AT FILLING STATION AT Y
 JU3569'IN ROAD AND GO 1.75 MILES TO CROSS ROAD WITH STORE AND DWELLING
 JU3569'ON NE CORNER, TURN RIGHT AND GO 2.0 MILES TO FORK, TURN RIGHT
 JU3569'AND GO 0.45 MILE TO ENTRANCE TO CONSTABLE FARM, TURN LEFT AND GO
 JU3569'0.3 MILE TO FARM BUILDINGS, GO BETWEEN BARN AND CRIBS AND THENCE
 JU3569'0.2 MILE NE ACROSS FIELD TO STATION.  TRUCKS MAY BE DRIVEN
 JU3569'DIRECTLY TO THE STATION IN GOOD WEATHER.
 JU3569'
 JU3569'HEIGHT OF LIGHT ABOVE STATION MARK 2 METERS.
 JU3569
 JU3569                          STATION RECOVERY (1937)
 JU3569
 JU3569'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU3569'RECOVERED AS DESCRIBED IN GOOD CONDITION.  THE PRESENT
 JU3569'DESCRIPTION IS ADEQUATE.
 JU3569'
 JU3569'A SIGNAL POLE WAS ERECTED OVER THE STATION FOR CONNECTING WITH
 JU3569'THE U.S. ENGINEERS TRIANGULATION.
 JU3569
 JU3569                          STATION RECOVERY (1973)
 JU3569
 JU3569'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JU3569'THE STATION WAS SEARCHED FOR BUT NOT FOUND.  IT IS BELIEVED ALL
 JU3569'MARKS WERE WASHED INTO THE CHESAPEAKE BAY.
 JU3569'
 JU3569'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3569'ON WORTH POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6271 ***********************************************************************
 JV6271  DESIGNATION -  CONSTANT
 JV6271  PID         -  JV6271
 JV6271  STATE/COUNTY-  MD/HARFORD
 JV6271  COUNTRY     -  US
 JV6271  USGS QUAD   -  EDGEWOOD (2016)
 JV6271
 JV6271                         *CURRENT SURVEY CONTROL
 JV6271  ______________________________________________________________________
 JV6271* NAD 83(2011) POSITION- 39 28 22.12731(N) 076 19 01.96594(W)   ADJUSTED
 JV6271* NAD 83(2011) ELLIP HT-    29.462 (meters)        (06/27/12)   ADJUSTED
 JV6271* NAD 83(2011) EPOCH   -  2010.00
 JV6271* NAVD 88 ORTHO HEIGHT -    62.447 (meters)      204.88  (feet) ADJUSTED
 JV6271  ______________________________________________________________________
 JV6271  GEOID HEIGHT    -        -33.001 (meters)                     GEOID18
 JV6271  NAD 83(2011) X  -  1,166,208.094 (meters)                     COMP
 JV6271  NAD 83(2011) Y  - -4,790,231.549 (meters)                     COMP
 JV6271  NAD 83(2011) Z  -  4,032,992.710 (meters)                     COMP
 JV6271  LAPLACE CORR    -         -3.36  (seconds)                    DEFLEC18
 JV6271  DYNAMIC HEIGHT  -         62.415 (meters)      204.77  (feet) COMP
 JV6271  MODELED GRAVITY -    980,108.2   (mgal)                       NAVD 88
 JV6271
 JV6271  VERT ORDER      -  FIRST     CLASS II
 JV6271
 JV6271  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6271  Standards:
 JV6271         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6271            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6271  -------------------------------------------------------------------
 JV6271  NETWORK    1.34   3.47           0.57   0.49   1.77      0.41985170
 JV6271  -------------------------------------------------------------------
 JV6271  Click here for local accuracies and other accuracy information.
 JV6271
 JV6271.The horizontal coordinates were established by GPS observations
 JV6271.and adjusted by the National Geodetic Survey in June 2012.
 JV6271
 JV6271.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6271.been affixed to the stable North American tectonic plate. See 
 JV6271.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6271
 JV6271.The horizontal coordinates are valid at the epoch date displayed above
 JV6271.which is a decimal equivalence of Year/Month/Day.
 JV6271
 JV6271.The orthometric height was determined by differential leveling and
 JV6271.adjusted by the NATIONAL GEODETIC SURVEY
 JV6271.in June 1991.
 JV6271
 JV6271.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6271.GEOID18 height accuracy estimate available here.
 JV6271
 JV6271.Click photographs - Photos may exist for this station.
 JV6271
 JV6271.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6271
 JV6271.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6271
 JV6271.The ellipsoidal height was determined by GPS observations
 JV6271.and is referenced to NAD 83.
 JV6271
 JV6271.The dynamic height is computed by dividing the NAVD 88
 JV6271.geopotential number by the normal gravity value computed on the
 JV6271.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6271.degrees latitude (g = 980.6199 gals.).
 JV6271
 JV6271.The modeled gravity was interpolated from observed gravity values.
 JV6271
 JV6271. The following values were computed from the NAD 83(2011) position.
 JV6271
 JV6271;                    North         East     Units Scale Factor Converg.
 JV6271;SPC MD       -   200,716.191   458,751.429   MT  1.00000407   +0 25 42.7
 JV6271;SPC MD       -   658,516.37  1,505,086.98   sFT  1.00000407   +0 25 42.7
 JV6271;UTM  18      - 4,370,075.301   386,701.300   MT  0.99975805   -0 50 14.8
 JV6271
 JV6271!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6271!SPC MD       -   0.99999538  x   1.00000407  =   0.99999945
 JV6271!UTM  18      -   0.99999538  x   0.99975805  =   0.99975343
 JV6271
 JV6271:                Primary Azimuth Mark                     Grid Az
 JV6271:SPC MD       -  CONSTANT AZ MK                           162 10 41.8
 JV6271:UTM  18      -  CONSTANT AZ MK                           163 26 39.3
 JV6271
 JV6271_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8670170075(NAD 83)
 JV6271
 JV6271|---------------------------------------------------------------------|
 JV6271| PID    Reference Object                     Distance      Geod. Az  |
 JV6271|                                                           dddmmss.s |
 JV6271| JV6308 CONSTANT AZ MK                      APPROX. 0.9 KM 1623624.5 |
 JV6271|---------------------------------------------------------------------|
 JV6271
 JV6271                          SUPERSEDED SURVEY CONTROL
 JV6271
 JV6271  NAD 83(2007)-  39 28 22.12742(N)    076 19 01.96678(W) AD(2002.00) 0
 JV6271  ELLIP H (02/10/07)   29.486  (m)                       GP(2002.00)    
 JV6271  ELLIP H (09/18/02)   29.475  (m)                       GP(       ) 4 2
 JV6271  NAD 83(1991)-  39 28 22.12714(N)    076 19 01.96652(W) AD(       ) 1
 JV6271  ELLIP H (01/27/92)   29.416  (m)                       GP(       ) 4 1
 JV6271  NAD 83(1986)-  39 28 22.12166(N)    076 19 01.97374(W) AD(       ) 1
 JV6271  NGVD 29              62.69   (m)          205.7    (f) LEVELING    3  
 JV6271
 JV6271.Superseded values are not recommended for survey control.
 JV6271
 JV6271.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6271.See file dsdata.pdf to determine how the superseded data were derived.
 JV6271
 JV6271_MARKER: DD = SURVEY DISK
 JV6271_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6271_STAMPING: 15 CONSTANT 1989
 JV6271_MARK LOGO: MD-025
 JV6271_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6271_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6271+STABILITY: SURFACE MOTION
 JV6271_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6271+SATELLITE: SATELLITE OBSERVATIONS - December 09, 1993
 JV6271
 JV6271  HISTORY     - Date     Condition        Report By
 JV6271  HISTORY     - 1989     MONUMENTED       RDA
 JV6271  HISTORY     - 19931209 GOOD             GEOMET
 JV6271  HISTORY     - 19970319 GOOD             DMW
 JV6271
 JV6271                          STATION DESCRIPTION
 JV6271
 JV6271'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6271'THE STATION IS LOCATED IN SOUTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6271'4 MILES SOUTH OF BEL AIR.  TO REACH THE STATION FROM THE FROM THE
 JV6271'INTERSECTION OF U.S. HIGHWAY 95 AND STATE HIGHWAY 24 PROCEED NORTH
 JV6271'ALONG HIGHWAY 24 1.6 MILES TO IT INTERSECTION WITH SINGER ROAD.  MAKE
 JV6271'A U TURN AND PROCEED SOUTH ALONG HIGHWAY 24 0.45 MILE TO STATION ON
 JV6271'THE RIGHT.  THE STATION IS A STANDARD HARFORD COUNTY STATION DISC SET
 JV6271'IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 16 CONSTANT 1989.  THE
 JV6271'STATION IS 27.7 FEET WEST OF THE CENTERLINE OF THE SOUTH BOUND LANES
 JV6271'OF HIGHWAY 24, 138.6 FEET NORTH OF THE CENTERLINE OF CULVERT THAT
 JV6271'RUNS UNDER HIGHWAY 24, 134 FEET EAST OF TOWNHOUSE ADDRESS 211, AND
 JV6271'LINES UP WITH THE SOUTH WALL OF TOWNHOUSE ADDRESS 211.
 JV6271
 JV6271                          STATION RECOVERY (1993)
 JV6271
 JV6271'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6271'RECOVERED IN GOOD CONDITION.
 JV6271
 JV6271                          STATION RECOVERY (1997)
 JV6271
 JV6271'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6271'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6308 ***********************************************************************
 JV6308  DESIGNATION -  CONSTANT AZ MK
 JV6308  PID         -  JV6308
 JV6308  STATE/COUNTY-  MD/HARFORD
 JV6308  COUNTRY     -  US
 JV6308  USGS QUAD   -  EDGEWOOD (2016)
 JV6308
 JV6308                         *CURRENT SURVEY CONTROL
 JV6308  ______________________________________________________________________
 JV6308* NAD 83(2011) POSITION- 39 27 53.12089(N) 076 18 50.24353(W)   ADJUSTED
 JV6308* NAD 83(2011) ELLIP HT-    13.315 (meters)        (06/27/12)   ADJUSTED
 JV6308* NAD 83(2011) EPOCH   -  2010.00
 JV6308* NAVD 88 ORTHO HEIGHT -    46.326 (meters)      151.99  (feet) ADJUSTED
 JV6308  ______________________________________________________________________
 JV6308  GEOID HEIGHT    -        -33.025 (meters)                     GEOID18
 JV6308  NAD 83(2011) X  -  1,166,611.921 (meters)                     COMP
 JV6308  NAD 83(2011) Y  - -4,790,705.643 (meters)                     COMP
 JV6308  NAD 83(2011) Z  -  4,032,291.868 (meters)                     COMP
 JV6308  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 JV6308  DYNAMIC HEIGHT  -         46.301 (meters)      151.91  (feet) COMP
 JV6308  MODELED GRAVITY -    980,107.6   (mgal)                       NAVD 88
 JV6308
 JV6308  VERT ORDER      -  FIRST     CLASS II
 JV6308
 JV6308  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6308  Standards:
 JV6308         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6308            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6308  -------------------------------------------------------------------
 JV6308  NETWORK    1.61   4.37           0.63   0.63   2.23      0.52826375
 JV6308  -------------------------------------------------------------------
 JV6308  Click here for local accuracies and other accuracy information.
 JV6308
 JV6308.The horizontal coordinates were established by GPS observations
 JV6308.and adjusted by the National Geodetic Survey in June 2012.
 JV6308
 JV6308.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6308.been affixed to the stable North American tectonic plate. See 
 JV6308.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6308
 JV6308.The horizontal coordinates are valid at the epoch date displayed above
 JV6308.which is a decimal equivalence of Year/Month/Day.
 JV6308
 JV6308.The orthometric height was determined by differential leveling and
 JV6308.adjusted by the NATIONAL GEODETIC SURVEY
 JV6308.in June 1991.
 JV6308
 JV6308.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6308.GEOID18 height accuracy estimate available here.
 JV6308
 JV6308.Click photographs - Photos may exist for this station.
 JV6308
 JV6308.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6308
 JV6308.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6308
 JV6308.The ellipsoidal height was determined by GPS observations
 JV6308.and is referenced to NAD 83.
 JV6308
 JV6308.The dynamic height is computed by dividing the NAVD 88
 JV6308.geopotential number by the normal gravity value computed on the
 JV6308.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6308.degrees latitude (g = 980.6199 gals.).
 JV6308
 JV6308.The modeled gravity was interpolated from observed gravity values.
 JV6308
 JV6308. The following values were computed from the NAD 83(2011) position.
 JV6308
 JV6308;                    North         East     Units Scale Factor Converg.
 JV6308;SPC MD       -   199,823.752   459,038.334   MT  1.00000261   +0 25 50.1
 JV6308;SPC MD       -   655,588.43  1,506,028.27   sFT  1.00000261   +0 25 50.1
 JV6308;UTM  18      - 4,369,176.963   386,968.353   MT  0.99975730   -0 50 06.9
 JV6308
 JV6308!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6308!SPC MD       -   0.99999791  x   1.00000261  =   1.00000052
 JV6308!UTM  18      -   0.99999791  x   0.99975730  =   0.99975521
 JV6308
 JV6308:                Primary Azimuth Mark                     Grid Az
 JV6308:SPC MD       -  CONSTANT                                 342 10 41.8
 JV6308:UTM  18      -  CONSTANT                                 343 26 38.8
 JV6308
 JV6308_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8696869176(NAD 83)
 JV6308
 JV6308|---------------------------------------------------------------------|
 JV6308| PID    Reference Object                     Distance      Geod. Az  |
 JV6308|                                                           dddmmss.s |
 JV6308| JV6271 CONSTANT                            APPROX. 0.9 KM 3423631.9 |
 JV6308|---------------------------------------------------------------------|
 JV6308
 JV6308                          SUPERSEDED SURVEY CONTROL
 JV6308
 JV6308  NAD 83(2007)-  39 27 53.12098(N)    076 18 50.24446(W) AD(2002.00) 0
 JV6308  ELLIP H (02/10/07)   13.335  (m)                       GP(2002.00)    
 JV6308  ELLIP H (09/18/02)   13.323  (m)                       GP(       ) 4 2
 JV6308  NAD 83(1991)-  39 27 53.12065(N)    076 18 50.24423(W) AD(       ) 1
 JV6308  ELLIP H (01/27/92)   13.264  (m)                       GP(       ) 4 1
 JV6308  NAD 83(1986)-  39 27 53.11517(N)    076 18 50.25146(W) AD(       ) 1
 JV6308  NGVD 29              46.57   (m)          152.8    (f) LEVELING    3  
 JV6308
 JV6308.Superseded values are not recommended for survey control.
 JV6308
 JV6308.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6308.See file dsdata.pdf to determine how the superseded data were derived.
 JV6308
 JV6308_MARKER: DZ = AZIMUTH MARK DISK
 JV6308_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6308_STAMPING: 16 CONSTANT 1989
 JV6308_MARK LOGO: MD-025
 JV6308_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6308_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6308+STABILITY: SURFACE MOTION
 JV6308_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6308+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2007
 JV6308
 JV6308  HISTORY     - Date     Condition        Report By
 JV6308  HISTORY     - 1989     MONUMENTED       RDA
 JV6308  HISTORY     - 20070224 GOOD             INDIV
 JV6308
 JV6308                          STATION DESCRIPTION
 JV6308
 JV6308'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6308'THE STATION IS LOCATED IN SOUTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6308'4 MILES SOUTH OF BEL AIR.  TO REACH THE STATION FROM THE FROM THE
 JV6308'INTERSECTION OF U.S. HIGHWAY 95 AND STATE HIGHWAY 24 PROCEED NORTH
 JV6308'ALONG HIGHWAY 24 1.6 MILES TO IT INTERSECTION WITH SINGER ROAD.  MAKE
 JV6308'A U TURN AND PROCEED SOUTH ALONG HIGHWAY 24 0.45 MILE TO STATION ON
 JV6308'THE RIGHT.  TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTH
 JV6308'ALONG HIGHWAY 24 0.58 MILE TO ITS INTERSECTION WITH EMMORTON ROAD AND
 JV6308'AZIMUTH MARK ON RIGHT IN THE MEDIAN OF HIGHWAY 24 NORTH END OF THE
 JV6308'INTERSECTION.  THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET
 JV6308'IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 16 CONSTANT 1989.  THE
 JV6308'MARK IS 6.1 FEET WEST OF STOP LIGHT POLE IN THE MEDIAN, 40 FEET EAST
 JV6308'OF THE CENTERLINE OF SOUTH BOUND LANES OF HIGHWAY 24, 62.6 FEET NORTH
 JV6308'OF THE INTERSECTION OF HIGHWAY 24 AND EMMORTON ROAD.
 JV6308
 JV6308                          STATION RECOVERY (2007)
 JV6308
 JV6308'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (TRA)
 JV6308'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1492 ***********************************************************************
 JW1492  DESIGNATION -  CONSTITUTION
 JW1492  PID         -  JW1492
 JW1492  STATE/COUNTY-  MD/ALLEGANY
 JW1492  COUNTRY     -  US
 JW1492  USGS QUAD   -  EVITTS CREEK (2016)
 JW1492
 JW1492                         *CURRENT SURVEY CONTROL
 JW1492  ______________________________________________________________________
 JW1492* NAD 83(2011) POSITION- 39 38 57.54818(N) 078 44 59.05857(W)   ADJUSTED
 JW1492* NAD 83(2011) ELLIP HT-   253.598 (meters)        (06/27/12)   ADJUSTED
 JW1492* NAD 83(2011) EPOCH   -  2010.00
 JW1492* NAVD 88 ORTHO HEIGHT -   286.3   (meters)      939.    (feet) VERTCON3
 JW1492  ______________________________________________________________________
 JW1492  GEOID HEIGHT    -        -32.751 (meters)                     GEOID18
 JW1492  NAD 83(2011) X  -    959,444.880 (meters)                     COMP
 JW1492  NAD 83(2011) Y  - -4,823,340.084 (meters)                     COMP
 JW1492  NAD 83(2011) Z  -  4,048,243.848 (meters)                     COMP
 JW1492  LAPLACE CORR    -         -4.74  (seconds)                    DEFLEC18
 JW1492
 JW1492  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1492  Standards:
 JW1492         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1492            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1492  -------------------------------------------------------------------
 JW1492  NETWORK    1.47   2.78           0.64   0.56   1.42     -0.00024371
 JW1492  -------------------------------------------------------------------
 JW1492  Click here for local accuracies and other accuracy information.
 JW1492
 JW1492.The horizontal coordinates were established by GPS observations
 JW1492.and adjusted by the National Geodetic Survey in June 2012.
 JW1492
 JW1492.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1492.been affixed to the stable North American tectonic plate. See 
 JW1492.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1492
 JW1492.The horizontal coordinates are valid at the epoch date displayed above
 JW1492.which is a decimal equivalence of Year/Month/Day.
 JW1492
 JW1492.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1492.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1492
 JW1492.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1492.GEOID18 height accuracy estimate available here.
 JW1492
 JW1492.Click photographs - Photos may exist for this station.
 JW1492
 JW1492.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1492
 JW1492.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1492
 JW1492.The ellipsoidal height was determined by GPS observations
 JW1492.and is referenced to NAD 83.
 JW1492
 JW1492. The following values were computed from the NAD 83(2011) position.
 JW1492
 JW1492;                    North         East     Units Scale Factor Converg.
 JW1492;SPC MD       -   221,532.931   249,824.599   MT  1.00004095   -1 05 53.5
 JW1492;SPC MD       -   726,812.62    819,632.87   sFT  1.00004095   -1 05 53.5
 JW1492;SPC PA S     -    35,571.475   514,190.345   MT  1.00005654   -0 38 55.0
 JW1492;SPC PA S     -   116,704.08  1,686,972.82   sFT  1.00005654   -0 38 55.0
 JW1492;SPC WV N     -   127,863.133   664,389.697   MT  0.99994082   +0 28 42.6
 JW1492;SPC WV N     -   419,497.63  2,179,751.86   sFT  0.99994082   +0 28 42.6
 JW1492;UTM  17      - 4,391,256.134   693,069.947   MT  1.00005895   +1 26 10.7
 JW1492
 JW1492!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1492!SPC MD       -   0.99996022  x   1.00004095  =   1.00000116
 JW1492!SPC PA S     -   0.99996022  x   1.00005654  =   1.00001675
 JW1492!SPC WV N     -   0.99996022  x   0.99994082  =   0.99990104
 JW1492!UTM  17      -   0.99996022  x   1.00005895  =   1.00001916
 JW1492
 JW1492:                Primary Azimuth Mark                     Grid Az
 JW1492:SPC MD       -  CONSTITUTION AZ MK                       071 38 55.7
 JW1492:SPC PA S     -  CONSTITUTION AZ MK                       071 11 57.2
 JW1492:SPC WV N     -  CONSTITUTION AZ MK                       070 04 19.6
 JW1492:UTM  17      -  CONSTITUTION AZ MK                       069 06 51.5
 JW1492
 JW1492_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9306991256(NAD 83)
 JW1492
 JW1492|---------------------------------------------------------------------|
 JW1492| PID    Reference Object                     Distance      Geod. Az  |
 JW1492|                                                           dddmmss.s |
 JW1492| CK6862 CONSTITUTION AZ MK                                 0703302.2 |
 JW1492| JW1481 CUMBERLAND MUNICIPAL TANK           298.488 METERS 11414     |
 JW1492| JW1483 CUMBERLAND RADIO STA WTBO MAST      241.865 METERS 12135     |
 JW1492| JW1510 N BRANCH PITTSBURGH GLASS STK       APPROX. 6.2 KM 1814919.7 |
 JW1492| JW1493 CUMBERLAND RADIO STA WDYK MAST      402.442 METERS 2090141.7 |
 JW1492| JW1497 CUMBERLAND ST MARY CATH CH TWR      APPROX. 1.3 KM 2122035.5 |
 JW1492| CK6863 CONSTITUTION RM 1                    18.534 METERS 21933     |
 JW1492| JW1495 CUMBERLAND KELLY TIRE CO STK        APPROX. 2.8 KM 2493358.4 |
 JW1492| JW1498 CUMBERLAND POTOMAC ED PWR STK       APPROX. 2.6 KM 2561124.3 |
 JW1492| JW1496 CUMBERLAND CENTER ST METH CH        APPROX. 1.5 KM 2971936.0 |
 JW1492| CK6864 CONSTITUTION RM 2                    21.769 METERS 31125     |
 JW1492|---------------------------------------------------------------------|
 JW1492
 JW1492                          SUPERSEDED SURVEY CONTROL
 JW1492
 JW1492  NAD 83(2007)-  39 38 57.54834(N)    078 44 59.05926(W) AD(2002.00) 0
 JW1492  ELLIP H (02/10/07)  253.616  (m)                       GP(2002.00)    
 JW1492  ELLIP H (06/09/03)  253.619  (m)                       GP(       ) 4 1
 JW1492  NAD 83(1995)-  39 38 57.54912(N)    078 44 59.05934(W) AD(       ) 2
 JW1492  ELLIP H (04/01/98)  253.658  (m)                       GP(       ) 4 1
 JW1492  ELLIP H (03/12/93)  253.580  (m)                       GP(       ) 4 2
 JW1492  NAD 83(1991)-  39 38 57.54973(N)    078 44 59.06133(W) AD(       ) 2
 JW1492  NAD 83(1986)-  39 38 57.55301(N)    078 44 59.06712(W) AD(       ) 2
 JW1492  NAD 27      -  39 38 57.23800(N)    078 45 00.00400(W) AD(       ) 2
 JW1492  NGVD 29 (03/12/93)  286.5    (m)  UNKNOWN  model used  GPS OBS        
 JW1492
 JW1492.Superseded values are not recommended for survey control.
 JW1492
 JW1492.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1492.See file dsdata.pdf to determine how the superseded data were derived.
 JW1492
 JW1492_MARKER: DS = TRIANGULATION STATION DISK
 JW1492_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1492_STAMPING: CONSTITUTION 1955
 JW1492_MARK LOGO: CGS
 JW1492_MAGNETIC: N = NO MAGNETIC MATERIAL
 JW1492_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1492+STABILITY: SURFACE MOTION
 JW1492_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1492+SATELLITE: SATELLITE OBSERVATIONS - May 23, 2006
 JW1492
 JW1492  HISTORY     - Date     Condition        Report By
 JW1492  HISTORY     - 1955     MONUMENTED       CGS
 JW1492  HISTORY     - 1955     GOOD             CGS
 JW1492  HISTORY     - 1980     GOOD             NGS
 JW1492  HISTORY     - 19920721 GOOD             NOS
 JW1492  HISTORY     - 20060523 GOOD             INDIV
 JW1492
 JW1492                          STATION DESCRIPTION
 JW1492
 JW1492'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1492'THE STATION IS LOCATED AT THE NORTHWEST CORNER OF CONSTITUTION
 JW1492'PARK OWNED BY THE CITY OF CUMBERLAND.  IT IS ABOUT 100 FEET WEST
 JW1492'OF THE NORTH END OF THE SOFTBALL DIAMOND AND 26 FEET SOUTHWEST
 JW1492'OF A TELEPHONE POLE.
 JW1492'
 JW1492'TO REACH THE AZIMUTH MARK FROM THE STATION GO EAST ACROSS THE
 JW1492'BALL DIAMOND FOR 0.2 MILE TO THE MARK.
 JW1492'
 JW1492'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1492'STAMPED CONSTITUTION 1955.
 JW1492'
 JW1492'REFERENCE MARK 1 IS 71 FEET EAST OF THE TELEPHONE POLE.  THE MARK
 JW1492'PROJECTS 2 INCHES, AND THE DISK IS STAMPED CONSTITUTION NO 1 1955.
 JW1492'
 JW1492'REFERENCE MARK 2 IS 2 FEET WEST OF THE TELEPHONE POLE.  THE MARK
 JW1492'PROJECTS 6 INCHES, AND THE DISK IS STAMPED CONSTITUTION NO 2 1955.
 JW1492'
 JW1492'THE AZIMUTH MARK IS 49 FEET WEST OF THE CENTER OF THE PARK ROAD
 JW1492'AND 3 FEET NORTH OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK
 JW1492'PROJECTS 2 INCHES, AND THE DISK IS STAMPED CONSTITUTION 1955.
 JW1492'
 JW1492'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JW1492
 JW1492                          STATION RECOVERY (1955)
 JW1492
 JW1492'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955
 JW1492'RECOVERED IN GOOD CONDITION.
 JW1492
 JW1492                          STATION RECOVERY (1980)
 JW1492
 JW1492'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 (RGP)
 JW1492'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JW1492'AS DESCRIBED.
 JW1492'
 JW1492'AN OLD FIRE TRUCK HAS BEEN PLACED ABOUT 20 FEET SOUTH OF THE AZIMUTH
 JW1492'MARK.  THE FIRE TRUCK IS USED AS A PLAY AREA FOR CHILDREN.
 JW1492
 JW1492                          STATION RECOVERY (1992)
 JW1492
 JW1492'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JW1492'IN THE CITY OF CUMBERLAND AT THE NORTHWEST CORNER OF THE PUBLIC PARK
 JW1492'KNOWN AS CONSTITUTION PARK. 100 FT (30.5 M) WEST OF THE NORTH END OF
 JW1492'A SOFTBALL DIAMOND, 71.42 FT (21.77 M) SOUTHEAST OF REFERENCE MARK 2
 JW1492'WHICH IS 2 FT (0.6 M) WEST OF A TELEPHONE POLE AND PROJECTS 0.16 M
 JW1492'(0.52 FT) ABOVE GROUND, 60.81 FT (18.53 M) NORTHEAST OF REFERENCE
 JW1492'MARK 1 WHICH IS 71 FT (21.6 M) EAST OF A TELEPHONE POLE AND PROJECTS
 JW1492'5 CM ABOVE GROUND AND 26 FT (7.9 M) SOUTHWEST OF A TELEPHONE POLE.
 JW1492'THERE IS AN AZIMUTH MARK ABOUT 0.2 MI (0.3 KM) DISTANT TO THE EAST
 JW1492'WHICH IS 49 FT (14.9 M) WEST OF THE CENTER OF THE PARK ROAD AND 3 FT
 JW1492'(0.9 M) NORTH OF A 4 IN BY 4 IN WITNESS POST.  STATION FOUND IN GOOD
 JW1492'CONDITION BY R.P. BUTLER.
 JW1492
 JW1492                          STATION RECOVERY (2006)
 JW1492
 JW1492'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2006 (DDD)
 JW1492'CONSTITUTION PARK 1955 CUMBERLAND, MARYLAND
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6055 ***********************************************************************
 HV6055  DESIGNATION -  COOK
 HV6055  PID         -  HV6055
 HV6055  STATE/COUNTY-  MD/TALBOT
 HV6055  COUNTRY     -  US
 HV6055  USGS QUAD   -  OXFORD (2016)
 HV6055
 HV6055                         *CURRENT SURVEY CONTROL
 HV6055  ______________________________________________________________________
 HV6055* NAD 83(1991) POSITION- 38 43 08.84346(N) 076 14 24.96822(W)   ADJUSTED
 HV6055* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6055  ______________________________________________________________________
 HV6055  GEOID HEIGHT    -        -34.423 (meters)                     GEOID18
 HV6055  LAPLACE CORR    -         -4.86  (seconds)                    DEFLEC18
 HV6055  HORZ ORDER      -  THIRD
 HV6055
 HV6055.The horizontal coordinates were established by classical geodetic methods
 HV6055.and adjusted by the National Geodetic Survey in January 1992.
 HV6055
 HV6055.The orthometric height was scaled from a topographic map.
 HV6055
 HV6055.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6055.GEOID18 height accuracy estimate available here.
 HV6055
 HV6055.Click photographs - Photos may exist for this station.
 HV6055
 HV6055.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6055
 HV6055. The following values were computed from the NAD 83(1991) position.
 HV6055
 HV6055;                    North         East     Units Scale Factor Converg.
 HV6055;SPC MD       -   117,101.739   466,068.344   MT  0.99995357   +0 28 36.6
 HV6055;SPC MD       -   384,191.29  1,529,092.56   sFT  0.99995357   +0 28 36.6
 HV6055;UTM  18      - 4,286,338.160   392,177.772   MT  0.99974316   -0 46 33.1
 HV6055
 HV6055!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6055!SPC MD       -   1.00000528  x   0.99995357  =   0.99995885
 HV6055!UTM  18      -   1.00000528  x   0.99974316  =   0.99974844
 HV6055
 HV6055:                Primary Azimuth Mark                     Grid Az
 HV6055:SPC MD       -  PEARY                                    170 54 02.5
 HV6055:UTM  18      -  PEARY                                    172 09 12.2
 HV6055
 HV6055_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9217786338(NAD 83)
 HV6055
 HV6055|---------------------------------------------------------------------|
 HV6055| PID    Reference Object                     Distance      Geod. Az  |
 HV6055|                                                           dddmmss.s |
 HV6055| CX2641 COOK RM                              11.630 METERS 06129     |
 HV6055| HV6010 PEARY                               APPROX. 0.7 KM 1712239.1 |
 HV6055|---------------------------------------------------------------------|
 HV6055
 HV6055                          SUPERSEDED SURVEY CONTROL
 HV6055
 HV6055  NAD 83(1986)-  38 43 08.84002(N)    076 14 24.98316(W) AD(       ) 3
 HV6055  NAD 27      -  38 43 08.41600(N)    076 14 26.18300(W) AD(       ) 3
 HV6055  USSD        -  38 43 08.79900(N)    076 14 25.99400(W) AD(       ) 3
 HV6055
 HV6055.Superseded values are not recommended for survey control.
 HV6055
 HV6055.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6055.See file dsdata.pdf to determine how the superseded data were derived.
 HV6055
 HV6055_MARKER: K = CLAY TILE PIPE
 HV6055_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6055_SP_SET: OBJECT DRIVEN INTO GROUND
 HV6055
 HV6055  HISTORY     - Date     Condition        Report By
 HV6055  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6055  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6055  HISTORY     - 1974     MARK NOT FOUND   NGS
 HV6055
 HV6055                          STATION DESCRIPTION
 HV6055
 HV6055'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6055'ON THE EASTERN SHORE OF BROAD CREEK, ABOUT 1-3/4 MILES N OF
 HV6055'CHOPTANK RIVER, AND 1/2 MILE S OF ENTRANCE TO BRIDGE CREEK, ON
 HV6055'POINT OF MARSH, ABOUT 1 FOOT ABOVE HIGH WATER, AND 2 YARDS E OF
 HV6055'SHORE.  STATION MARK IS CENTER OF 2-INCH TILE PIPE PROJECTING 4
 HV6055'INCHES ABOVE SURFACE OF GROUND.  SUB-SURFACE MARK IS THE CENTER OF
 HV6055'2-INCH TILE PIPE BURIED WITH TOP 2 INCHES BELOW BASE OF SURFACE
 HV6055'PIPE.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HV6055'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6055'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING 6 INCHES.
 HV6055'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6055'POST. IT IS 11.63 METERS (38.2 FEET) FROM STATION N 38 DEG 31 MIN
 HV6055'E. OTHER DISTANCES AND BEARINGS ARE AS FOLLOWS--LEFT TANGENT OF
 HV6055'NELSON ISLAND, 2 MILES, S 52 DEG 24 MIN W.  N GABLE OF BARN, 2-1/4
 HV6055'MILES, N 62 DEG 45 MIN W.  S GABLE OF BRIDGES BARN, 1-1/2 MILES,
 HV6055'N 34 DEG 7 MIN W.  S CHIMNEY OF HOUSE, 2-1/8 MILES, N 12 DEG 50
 HV6055'MIN W.  S CHIMNEY OF HOUSE, 3-1/2 MILES, N 1 DEG 7 MIN W.  E
 HV6055'CHIMNEY OF HOUSE, 1-1/4 MILES, N 16 DEG 2 MIN E.  NAIL IN BLAZE IN
 HV6055'6-INCH CEDAR TREE, 13.79 METERS (45.2 FEET), N 58 DEG 8 MIN E.
 HV6055'NAIL IN BLAZE IN 8-INCH PERSIMMON TREE, 9.79 METERS (32.12 FEET),
 HV6055'N 77 DEG 43 MIN E.
 HV6055
 HV6055                          STATION RECOVERY (1940)
 HV6055
 HV6055'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6055'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  REFERENCE TREES
 HV6055'DESTROYED.
 HV6055'
 HV6055'REFERENCE MARK WAS NOT RECOVERED.  MAY HAVE BEEN WASHED OUT.
 HV6055
 HV6055                          STATION RECOVERY (1974)
 HV6055
 HV6055'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV6055'A SEARCH WAS MADE FOR THE STATION BUT IT WAS NOT FOUND.  IT IS
 HV6055'BELIEVED THAT THE STATION ALONG WITH THE POINT OF LAND WAS WASHED
 HV6055'AWAY BY HIGH WATER.
 HV6055'
 HV6055'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 2 MILES
 HV6055'SOUTHEAST OF NEAVITT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4209 ***********************************************************************
 JV4209  DESIGNATION -  COOK
 JV4209  PID         -  JV4209
 JV4209  STATE/COUNTY-  MD/HOWARD
 JV4209  COUNTRY     -  US
 JV4209  USGS QUAD   -  WOODBINE (2016)
 JV4209
 JV4209                         *CURRENT SURVEY CONTROL
 JV4209  ______________________________________________________________________
 JV4209* NAD 83(1991) POSITION- 39 19 54.44086(N) 077 01 42.39121(W)   ADJUSTED
 JV4209* NAVD 88 ORTHO HEIGHT -   204.    (meters)      669.    (feet) SCALED
 JV4209  ______________________________________________________________________
 JV4209  GEOID HEIGHT    -        -31.877 (meters)                     GEOID18
 JV4209  LAPLACE CORR    -         -1.27  (seconds)                    DEFLEC18
 JV4209  HORZ ORDER      -  SECOND
 JV4209
 JV4209.The horizontal coordinates were established by classical geodetic methods
 JV4209.and adjusted by the National Geodetic Survey in January 1992.
 JV4209
 JV4209.The orthometric height was scaled from a topographic map.
 JV4209
 JV4209.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4209.GEOID18 height accuracy estimate available here.
 JV4209
 JV4209.Click photographs - Photos may exist for this station.
 JV4209
 JV4209.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4209
 JV4209. The following values were computed from the NAD 83(1991) position.
 JV4209
 JV4209;                    North         East     Units Scale Factor Converg.
 JV4209;SPC MD       -   184,840.046   397,547.765   MT  0.99998146   -0 01 04.3
 JV4209;SPC MD       -   606,429.38  1,304,287.96   sFT  0.99998146   -0 01 04.3
 JV4209;UTM  18      - 4,355,558.573   325,169.662   MT  0.99997635   -1 17 09.5
 JV4209
 JV4209!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4209!SPC MD       -   0.99997303  x   0.99998146  =   0.99995449
 JV4209!UTM  18      -   0.99997303  x   0.99997635  =   0.99994938
 JV4209
 JV4209:                Primary Azimuth Mark                     Grid Az
 JV4209:SPC MD       -  COOK AZ MK                               172 56 56.1
 JV4209:UTM  18      -  COOK AZ MK                               174 13 01.3
 JV4209
 JV4209_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2516955558(NAD 83)
 JV4209
 JV4209|---------------------------------------------------------------------|
 JV4209| PID    Reference Object                     Distance      Geod. Az  |
 JV4209|                                                           dddmmss.s |
 JV4209| CK6866 COOK RM 1                            23.975 METERS 03543     |
 JV4209| CK6869 COOK 2 RM 3                                        03543     |
 JV4209| JV6068 SYKESVILLE SPRINGFIELD HOSP TK      APPROX. 8.3 KM 0442341.5 |
 JV4209| JV6060 W FRIENDSHIP MCKENDREE METH CH      APPROX. 3.4 KM 1273339.7 |
 JV4209| JV2457 COOK 2                               38.819 METERS 14834     |
 JV4209| CK6867 COOK RM 2                            46.145 METERS 16939     |
 JV4209| CK6865 COOK AZ MK                                         1725551.8 |
 JV4209| JV4218 RIDGEVILLE NURSERIES TANK           APPROX.12.5 KM 2870021.0 |
 JV4209| JV4239 MT AIRY MUNICIPAL TANK              APPROX.11.8 KM 2964731.4 |
 JV4209|---------------------------------------------------------------------|
 JV4209
 JV4209                          SUPERSEDED SURVEY CONTROL
 JV4209
 JV4209  NAD 83(1986)-  39 19 54.44010(N)    077 01 42.39968(W) AD(       ) 2
 JV4209  NAD 27      -  39 19 54.06400(N)    077 01 43.47500(W) AD(       ) 2
 JV4209
 JV4209.Superseded values are not recommended for survey control.
 JV4209
 JV4209.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4209.See file dsdata.pdf to determine how the superseded data were derived.
 JV4209
 JV4209_MARKER: DS = TRIANGULATION STATION DISK
 JV4209_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4209_STAMPING: COOK 1943
 JV4209_MARK LOGO: CGS
 JV4209_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4209+STABILITY: SURFACE MOTION
 JV4209
 JV4209  HISTORY     - Date     Condition        Report By
 JV4209  HISTORY     - 1943     MONUMENTED       CGS
 JV4209  HISTORY     - 1953     SEE DESCRIPTION  CGS
 JV4209
 JV4209                          STATION DESCRIPTION
 JV4209
 JV4209'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4209'THE STATION IS LOCATED 0.5 MILE W AND 0.75 MILE N OF COOKSVILLE
 JV4209'POST OFFICE, IN A WOODED TRACT OWNED BY FRANCIS D. SMITH WHO
 JV4209'LIVES ABOUT 0.75 MILE SW OF THE STATION.  IT IS 29 FEET W OF THE
 JV4209'CENTER OF A DIRT ROAD, 54 FEET NW OF A 3-FOOT TWIN OAK TREE WITH
 JV4209'A TRIANGULAR BLAZE AND 96 FEET SW OF TELEPHONE POLE NO.21.  IT
 JV4209'IS STAMPED COOK 1943 AND PROJECTS 10 INCHES.
 JV4209'
 JV4209'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV4209'DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 JV4209'
 JV4209'REFERENCE MARK NO.1 IS NW OF THE STATION, 12 FEET E OF THE
 JV4209'CENTER OF THE ROAD AND 23 FEET S BY E OF TELEPHONE POLE NO.21.  IT
 JV4209'IS STAMPED COOK NO.1 1943 AND PROJECTS 6 INCHES.
 JV4209'
 JV4209'REFERENCE MARK NO.2 IS SSE OF THE STATION, 12 FEET E OF THE
 JV4209'CENTER OF THE DIRT ROAD AND 43 FEET N OF TELEPHONE POLE NO.19N2.  IT
 JV4209'IS STAMPED COOK NO.2 1943 AND PROJECTS 6 INCHES.
 JV4209'
 JV4209'THE AZIMUTH MARK IS S BY E OF THE STATION, IN FRONT OF A
 JV4209'TOURIST CAMP, 24 FEET S OF THE CENTER OF U.S. HIGHWAY 40 AND 3
 JV4209'FEET SW OF POWER-LINE POLE NO.914.  IT IS STAMPED COOK 1943 AND
 JV4209'PROJECTS 6 INCHES.  TO REACH FROM THE STATION GO S ON THE DIRT
 JV4209'ROAD FOR 0.5 MILE, THEN TURN LEFT ON U.S. HIGHWAY 40 FOR 0.05
 JV4209'MILE TO THE MARK ON THE RIGHT.
 JV4209'
 JV4209'TO REACH THE STATION FROM THE COOKSVILLE POST OFFICE GO W
 JV4209'ON U.S. HIGHWAY 40 FOR 0.6 MILE.  THEN TURN RIGHT ON A DIRT ROAD
 JV4209'AND GO 0.5 MILE TO THE WOODED TRACT ON THE LEFT AND THE STATION.
 JV4209'
 JV4209'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT ELDER.
 JV4209'
 JV4209'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT SLACK.
 JV4209'
 JV4209'A 77-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT FLORENCE.
 JV4209'
 JV4209'A 77-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT RIDGE.
 JV4209'
 JV4209'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAYTON.
 JV4209'
 JV4209'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAMASCUS.
 JV4209'
 JV4209'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAY.
 JV4209'
 JV4209'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT TAYLOR.
 JV4209'
 JV4209'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4209
 JV4209                          STATION RECOVERY (1953)
 JV4209
 JV4209'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (IWS)
 JV4209'THE STATION SITE WAS RECOVERED AS DESCRIBED.  THE STATION AND THE
 JV4209'UNDERGROUND MARK HAD BEEN DESTROYED, HOWEVER, BEFORE THE STATION
 JV4209'HAD BEEN DESTROYED IT HAD BEEN REFERENCED IN BY MEANS OF SEVERAL
 JV4209'MEASURED DISTANCES AND ANGLES.  DISTANCES AND DIRECTIONS CHECKED
 JV4209'WELL ENOUGH TO ACCURATELY REESTABLISH THE STATION
 JV4209'LOCATION.  REFERENCE MARKS 1 AND 2 HAD BEEN DESTROYED AFTER
 JV4209'FIRST REFERENCING IN REFERENCE MARKS 3 AND 4.  THIS WAS DONE
 JV4209'BY THE MARYLAND BUREAU OF CONTROL SURVEYS.  THESE MEASUREMENTS
 JV4209'ALSO PROVED TO BE ACCURATE.
 JV4209'
 JV4209'A NEW STATION, COOK 2, WAS ESTABLISHED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2461 ***********************************************************************
 JV2461  DESIGNATION -  COOK 3
 JV2461  PID         -  JV2461
 JV2461  STATE/COUNTY-  MD/HOWARD
 JV2461  COUNTRY     -  US
 JV2461  USGS QUAD   -  WOODBINE (2016)
 JV2461
 JV2461                         *CURRENT SURVEY CONTROL
 JV2461  ______________________________________________________________________
 JV2461* NAD 83(2011) POSITION- 39 19 54.03044(N) 077 01 41.67046(W)   ADJUSTED
 JV2461* NAD 83(2011) ELLIP HT-   170.850 (meters)        (06/27/12)   ADJUSTED
 JV2461* NAD 83(2011) EPOCH   -  2010.00
 JV2461* NAVD 88 ORTHO HEIGHT -   202.68  (meters)      665.0   (feet) RESET
 JV2461  ______________________________________________________________________
 JV2461  GEOID HEIGHT    -        -31.877 (meters)                     GEOID18
 JV2461  NAD 83(2011) X  -  1,108,931.260 (meters)                     COMP
 JV2461  NAD 83(2011) Y  - -4,814,133.963 (meters)                     COMP
 JV2461  NAD 83(2011) Z  -  4,020,974.241 (meters)                     COMP
 JV2461  LAPLACE CORR    -         -1.28  (seconds)                    DEFLEC18
 JV2461  VERT ORDER      -  THIRD
 JV2461
 JV2461  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV2461  Standards:
 JV2461         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV2461            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV2461  -------------------------------------------------------------------
 JV2461  NETWORK    1.33   2.43           0.55   0.53   1.24     -0.22612109
 JV2461  -------------------------------------------------------------------
 JV2461  Click here for local accuracies and other accuracy information.
 JV2461
 JV2461.The horizontal coordinates were established by GPS observations
 JV2461.and adjusted by the National Geodetic Survey in June 2012.
 JV2461
 JV2461.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV2461.been affixed to the stable North American tectonic plate. See 
 JV2461.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV2461
 JV2461.The horizontal coordinates are valid at the epoch date displayed above
 JV2461.which is a decimal equivalence of Year/Month/Day.
 JV2461
 JV2461.The orthometric height was computed from unverified reset data.
 JV2461
 JV2461.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2461.GEOID18 height accuracy estimate available here.
 JV2461
 JV2461.Click photographs - Photos may exist for this station.
 JV2461
 JV2461.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV2461
 JV2461.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2461
 JV2461.The ellipsoidal height was determined by GPS observations
 JV2461.and is referenced to NAD 83.
 JV2461
 JV2461. The following values were computed from the NAD 83(2011) position.
 JV2461
 JV2461;                    North         East     Units Scale Factor Converg.
 JV2461;SPC MD       -   184,827.384   397,565.023   MT  0.99998144   -0 01 03.8
 JV2461;SPC MD       -   606,387.84  1,304,344.58   sFT  0.99998144   -0 01 03.8
 JV2461;UTM  18      - 4,355,545.532   325,186.635   MT  0.99997628   -1 17 09.0
 JV2461
 JV2461!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2461!SPC MD       -   0.99997320  x   0.99998144  =   0.99995464
 JV2461!UTM  18      -   0.99997320  x   0.99997628  =   0.99994948
 JV2461
 JV2461:                Primary Azimuth Mark                     Grid Az
 JV2461:SPC MD       -  NAT 2                                    119 43 04.9
 JV2461:UTM  18      -  NAT 2                                    120 59 10.1
 JV2461
 JV2461_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2518655545(NAD 83)
 JV2461
 JV2461|---------------------------------------------------------------------|
 JV2461| PID    Reference Object                     Distance      Geod. Az  |
 JV2461|                                                           dddmmss.s |
 JV2461| JV2465 NAT 2                               APPROX. 1.5 KM 1194201.1 |
 JV2461| JV2457 COOK 2                               20.695 METERS 17139     |
 JV2461| JV2460 COOK 3 RM 5                           6.386 METERS 18256     |
 JV2461| JV2462 COOK 3 RM 6                          20.309 METERS 27821     |
 JV2461|---------------------------------------------------------------------|
 JV2461
 JV2461                          SUPERSEDED SURVEY CONTROL
 JV2461
 JV2461  NAD 83(2007)-  39 19 54.03060(N)    077 01 41.67120(W) AD(2002.00) 0
 JV2461  ELLIP H (02/10/07)  170.877  (m)                       GP(2002.00)    
 JV2461  ELLIP H (08/30/02)  170.877  (m)                       GP(       ) 4 2
 JV2461  NAD 83(1991)-  39 19 54.03041(N)    077 01 41.67132(W) AD(       ) 1
 JV2461  ELLIP H (02/23/93)  170.778  (m)                       GP(       ) 4 2
 JV2461  NAD 83(1991)-  39 19 54.03061(N)    077 01 41.67141(W) AD(       ) 2
 JV2461  NAD 83(1986)-  39 19 54.02998(N)    077 01 41.67991(W) AD(       ) 2
 JV2461  NAD 27      -  39 19 53.65384(N)    077 01 42.75537(W) AD(       ) 2
 JV2461  NGVD 29 (??/??/??)  202.89   (m)          665.6    (f) RESET       3  
 JV2461  NGVD 29             202.89   (m)          665.6    (f) LEVELING    3  
 JV2461  NGVD 29             202.86   (m)          665.5    (f) LEVELING    3  
 JV2461
 JV2461.Superseded values are not recommended for survey control.
 JV2461
 JV2461.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2461.See file dsdata.pdf to determine how the superseded data were derived.
 JV2461
 JV2461_MARKER: DS = TRIANGULATION STATION DISK
 JV2461_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2461_STAMPING: COOK 3 1971
 JV2461_MARK LOGO: CGS
 JV2461_PROJECTION: PROJECTING 3 CENTIMETERS
 JV2461_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2461_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2461+STABILITY: SURFACE MOTION
 JV2461_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2461+SATELLITE: SATELLITE OBSERVATIONS - November 18, 2021
 JV2461
 JV2461  HISTORY     - Date     Condition        Report By
 JV2461  HISTORY     - 1971     MONUMENTED       NGS
 JV2461  HISTORY     - 1971     GOOD             NGS
 JV2461  HISTORY     - 1975     GOOD             NGS
 JV2461  HISTORY     - 19901125 GOOD             MD-027
 JV2461  HISTORY     - 19910923 GOOD
 JV2461  HISTORY     - 20211118 GOOD             MDSHA
 JV2461
 JV2461                          STATION DESCRIPTION
 JV2461
 JV2461'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV2461'THE STATION IS LOCATED 1.75 MILES WEST AND 0.5 MILE NORTH OF THE
 JV2461'STORE AND CROSSROAD AT COOKSVILLE, 0.7 MILE WEST OF THE
 JV2461'INTERCHANGE OF INTERSECTION HIGHWAY I-70N AND STATE HIGHWAY
 JV2461'NO. 97.  SET ON THE TOP OF A CUT BANK ON THE NORTH SIDE OF HIGHWAY
 JV2461'I-70N, NEAR THE EDGE AND TOP OF WHERE THE BANK STARTS BREAK TO
 JV2461'THE WEST TOWARD OLD ROAD BED, 160 FEET NORTH OF THE CENTERLINE OF
 JV2461'MEDIAN STRIP OF I-70N, 35 FEET EAST OF THE CENTER OF A
 JV2461'BARRICADE ON OLD ROAD, AND 2.0 FEET NORTH OF A METAL WITNESS
 JV2461'SIGN AND POST.  IT IS SET FLUSH WITH THE GROUND AND THE
 JV2461'DISK IS STAMPED, COOK 3 1971.
 JV2461'
 JV2461'REFERENCE MARK NO. 5, IS ABOUT THE SAME ELEVATION AS THE STATION,
 JV2461'SET AT EDGE OF BANK WHERE STARTS BRAKE TO THE WEST AND 19.0 FEET
 JV2461'SOUTH OF A METAL WITNESS POST AND SIGN.  IT IS SET FLUSH WITH THE
 JV2461'GROUND AND THE DISK IS STAMPED, COOK 3 NO 5 1971.
 JV2461'
 JV2461'REFERENCE MARK NO. 6, IS ABOUT 0.6 FOOT HIGHER IN ELEVATION THAN
 JV2461'THE STATION, AND IS WEST ACROSS THE OLD HIGHWAY BED FROM THE
 JV2461'STATION, AND ON THE EAST SLOPE OF A BANK ABOUT 6 FEET EAST OF THE
 JV2461'TOP OF BANK.  IT IS SET FLUSH WITH THE GROUND AND THE DISK IS
 JV2461'STAMPED, COOK 3 NO 6 1971.
 JV2461'
 JV2461'STATION NAT 2 1971 IS VISIBLE FROM A GROUND SETUP AND CAN BE
 JV2461'USED FOR THE AZIMUTH MARK.
 JV2461'
 JV2461'TO REACH THE STATION FROM THE INTERCHANGE OF I-70N AND STATE
 JV2461'HIGHWAY NO. 97, ABOUT 0.5 MILE NORTH OF COOKSVILLE, GO WESTERLY
 JV2461'ON INTERSTATE HIGHWAY I-70 N FOR 0.7 MILE TO THE STATION ON TOP OF
 JV2461'CUT BANK ON THE RIGHT, NORTH SIDE OF HIGHWAY.
 JV2461
 JV2461                          STATION RECOVERY (1971)
 JV2461
 JV2461'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV2461'7.8 MI E FROM RIDGEVILLE.
 JV2461'ABOUT 7.8 MILES EAST ALONG HIGHWAY I-70N FROM RIDGEVILLE, AND
 JV2461'0.7 MILE WEST ALONG HIGHWAY I-70N FROM THE INTERCHANGE AT
 JV2461'JUNCTION WITH STATE HIGHWAY NO. 97, SET ON THE TOP OF A CUT BANK
 JV2461'ON THE NORTH SIDE OF INTERSTATE HIGHWAY I-70N-- IT IS NEAR THE
 JV2461'EDGE AND TOP OF WHERE THE BANK STARTS BREAK TO THE WEST TOWARD
 JV2461'OLD ROAD BED, 160 FEET NORTH OF THE CENTERLINE OF MEDIAN STRIP OF
 JV2461'HIGHWAY I-70N, 35 FEET EAST OF THE CENTER OF A BARRICADE ON THE
 JV2461'OLD ROAD, AND 2.0 FEET NORTH OF A METAL WITNESS POST AND SIGN.
 JV2461'THE DISK IS SET IN THE TOP OF A ROUND CONCRETE MONUMENT THAT IS
 JV2461'FLUSH WITH THE GROUND.
 JV2461
 JV2461                          STATION RECOVERY (1975)
 JV2461
 JV2461'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV2461'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV2461'CONDITION AS DESCRIBED IN THE 1971 DESCRIPTION.  NO OBSERVATIONS
 JV2461'WERE TAKEN FROM THIS STATION AT THIS DATE.
 JV2461'
 JV2461'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV2461'1-3/4 MILES WEST-NORTHWEST OF COOKSVILLE.
 JV2461
 JV2461                          STATION RECOVERY (1990)
 JV2461
 JV2461'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 1990
 JV2461'RECOVERED IN GOOD CONDITION.
 JV2461
 JV2461                          STATION RECOVERY (1991)
 JV2461
 JV2461'RECOVERED 1991
 JV2461'RECOVERED IN GOOD CONDITION.
 JV2461
 JV2461                          STATION RECOVERY (2021)
 JV2461
 JV2461'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV2461'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2460 ***********************************************************************
 JV2460  DESIGNATION -  COOK 3 RM 5
 JV2460  PID         -  JV2460
 JV2460  STATE/COUNTY-  MD/HOWARD
 JV2460  COUNTRY     -  US
 JV2460  USGS QUAD   -  WOODBINE (2016)
 JV2460
 JV2460                         *CURRENT SURVEY CONTROL
 JV2460  ______________________________________________________________________
 JV2460* NAD 83(1986) POSITION- 39 19 53.82   (N) 077 01 41.68   (W)   HD_HELD1
 JV2460* NAVD 88 ORTHO HEIGHT -   202.65  (meters)      664.9   (feet) RESET
 JV2460  ______________________________________________________________________
 JV2460  GEOID HEIGHT    -        -31.877 (meters)                     GEOID18
 JV2460  VERT ORDER      -  THIRD
 JV2460
 JV2460.The horizontal coordinates were determined by differentially corrected
 JV2460.hand held GPS observations or other comparable positioning techniques
 JV2460.and have an estimated accuracy of +/- 3 meters.
 JV2460
 JV2460.The orthometric height was computed from unverified reset data.
 JV2460
 JV2460.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2460.GEOID18 height accuracy estimate available here.
 JV2460
 JV2460.Click photographs - Photos may exist for this station.
 JV2460
 JV2460;                    North         East    Units  Estimated Accuracy
 JV2460;SPC MD       -   184,820.9     397,564.8     MT  (+/- 3 meters HH1 GPS) 
 JV2460
 JV2460_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2518655539(NAD 83)
 JV2460
 JV2460                          SUPERSEDED SURVEY CONTROL
 JV2460
 JV2460  NGVD 29 (??/??/??)  202.86   (m)          665.5    (f) RESET       3  
 JV2460
 JV2460.Superseded values are not recommended for survey control.
 JV2460
 JV2460.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2460.See file dsdata.pdf to determine how the superseded data were derived.
 JV2460
 JV2460_MARKER: DR = REFERENCE MARK DISK
 JV2460_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2460_STAMPING: COOK 3 NO 5 1971
 JV2460_MARK LOGO: CGS
 JV2460_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2460+STABILITY: SURFACE MOTION
 JV2460_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2460+SATELLITE: SATELLITE OBSERVATIONS - November 18, 2021
 JV2460
 JV2460  HISTORY     - Date     Condition        Report By
 JV2460  HISTORY     - 1971     MONUMENTED       NGS
 JV2460  HISTORY     - 20211118 GOOD             MDSHA
 JV2460
 JV2460                          STATION DESCRIPTION
 JV2460
 JV2460'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV2460'7.8 MI E FROM RIDGEVILLE.
 JV2460'ABOUT 7.8 MILES EAST ALONG HIGHWAY I-70N FROM RIDGEVILLE, AND
 JV2460'0.7 MILE WEST ALONG HIGHWAY I-70N FROM THE INTERCHANGE AT
 JV2460'JUNCTION WITH STATE HIGHWAY NO. 97, ON THE TOP OF A CUT BANK ON
 JV2460'NORTH SIDE OF HIGHWAY, 20.95 FEET SOUTH OF THE STATION, 19.0
 JV2460'FEET SOUTH OF A METAL WITNESS POST AND SIGN.  THE DISK IS SET IN
 JV2460'THE TOP OF A ROUND CONCRETE MONUMENT THAT IS FLUSH WITH GROUND
 JV2460'SURFACE.
 JV2460
 JV2460                          STATION RECOVERY (2021)
 JV2460
 JV2460'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV2460'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2462 ***********************************************************************
 JV2462  DESIGNATION -  COOK 3 RM 6
 JV2462  PID         -  JV2462
 JV2462  STATE/COUNTY-  MD/HOWARD
 JV2462  COUNTRY     -  US
 JV2462  USGS QUAD   -  WOODBINE (2016)
 JV2462
 JV2462                         *CURRENT SURVEY CONTROL
 JV2462  ______________________________________________________________________
 JV2462* NAD 83(1986) POSITION- 39 19 54.13   (N) 077 01 42.51   (W)   HD_HELD1
 JV2462* NAVD 88 ORTHO HEIGHT -   202.88  (meters)      665.6   (feet) RESET
 JV2462  ______________________________________________________________________
 JV2462  GEOID HEIGHT    -        -31.877 (meters)                     GEOID18
 JV2462  VERT ORDER      -  THIRD
 JV2462
 JV2462.The horizontal coordinates were determined by differentially corrected
 JV2462.hand held GPS observations or other comparable positioning techniques
 JV2462.and have an estimated accuracy of +/- 3 meters.
 JV2462
 JV2462.The orthometric height was computed from unverified reset data.
 JV2462
 JV2462.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2462.GEOID18 height accuracy estimate available here.
 JV2462
 JV2462.Click photographs - Photos may exist for this station.
 JV2462
 JV2462;                    North         East    Units  Estimated Accuracy
 JV2462;SPC MD       -   184,830.5     397,544.9     MT  (+/- 3 meters HH1 GPS) 
 JV2462
 JV2462_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2516655549(NAD 83)
 JV2462
 JV2462                          SUPERSEDED SURVEY CONTROL
 JV2462
 JV2462  NGVD 29 (??/??/??)  203.09   (m)          666.3    (f) RESET       3  
 JV2462
 JV2462.Superseded values are not recommended for survey control.
 JV2462
 JV2462.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2462.See file dsdata.pdf to determine how the superseded data were derived.
 JV2462
 JV2462_MARKER: DR = REFERENCE MARK DISK
 JV2462_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2462_STAMPING: COOK 3 NO 6 1971
 JV2462_MARK LOGO: CGS
 JV2462_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2462+STABILITY: SURFACE MOTION
 JV2462
 JV2462  HISTORY     - Date     Condition        Report By
 JV2462  HISTORY     - 1971     MONUMENTED       NGS
 JV2462
 JV2462                          STATION DESCRIPTION
 JV2462
 JV2462'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV2462'7.8 MI E FROM RIDGEVILLE.
 JV2462'ABOUT 7.8 MILES EAST ALONG HIGHWAY I-70N FROM RIDGEVILLE, AND
 JV2462'0.7 MILE WEST ALONG HIGHWAY I-70N FROM THE INTERCHANGE AT
 JV2462'JUNCTION WITH STATE HIGHWAY NO. 97, ON THE TOP OF A CUT BANK ON
 JV2462'NORTH SIDE OF THE HIGHWAY, 66.63 FEET WEST OF THE STATION MARK
 JV2462'AND ACROSS THE OLD ROAD BED FROM STATION.  IT IS ON THE EAST
 JV2462'SLOPE OF A CUT BANK ABOUT 6 FEET EAST OF TOP OF BANK, SET IN THE
 JV2462'TOP OF A CONCRETE MONUMENT THAT IS ROUND IN SHAPE AND SET FLUSH
 JV2462'WITH GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6106 ***********************************************************************
 HV6106  DESIGNATION -  COOKS POINT 2
 HV6106  PID         -  HV6106
 HV6106  STATE/COUNTY-  MD/DORCHESTER
 HV6106  COUNTRY     -  US
 HV6106  USGS QUAD   -  TILGHMAN (2016)
 HV6106
 HV6106                         *CURRENT SURVEY CONTROL
 HV6106  ______________________________________________________________________
 HV6106* NAD 83(1991) POSITION- 38 37 52.81246(N) 076 17 34.84760(W)   ADJUSTED
 HV6106* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6106  ______________________________________________________________________
 HV6106  GEOID HEIGHT    -        -34.442 (meters)                     GEOID18
 HV6106  LAPLACE CORR    -         -4.81  (seconds)                    DEFLEC18
 HV6106  HORZ ORDER      -  THIRD
 HV6106
 HV6106.The horizontal coordinates were established by classical geodetic methods
 HV6106.and adjusted by the National Geodetic Survey in January 1992.
 HV6106
 HV6106.The orthometric height was scaled from a topographic map.
 HV6106
 HV6106.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6106.GEOID18 height accuracy estimate available here.
 HV6106
 HV6106.Click photographs - Photos may exist for this station.
 HV6106
 HV6106.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6106
 HV6106. The following values were computed from the NAD 83(1991) position.
 HV6106
 HV6106;                    North         East     Units Scale Factor Converg.
 HV6106;SPC MD       -   107,320.507   461,557.117   MT  0.99995890   +0 26 37.4
 HV6106;SPC MD       -   352,100.70  1,514,291.97   sFT  0.99995890   +0 26 37.4
 HV6106;UTM  18      - 4,276,659.822   387,454.898   MT  0.99975598   -0 48 26.4
 HV6106
 HV6106!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6106!SPC MD       -   1.00000544  x   0.99995890  =   0.99996434
 HV6106!UTM  18      -   1.00000544  x   0.99975598  =   0.99976142
 HV6106
 HV6106:                Primary Azimuth Mark                     Grid Az
 HV6106:SPC MD       -  SHARP NORTH                              263 43 42.1
 HV6106:UTM  18      -  SHARP NORTH                              264 58 45.9
 HV6106
 HV6106_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8745476659(NAD 83)
 HV6106
 HV6106|---------------------------------------------------------------------|
 HV6106| PID    Reference Object                     Distance      Geod. Az  |
 HV6106|                                                           dddmmss.s |
 HV6106| HV6078 SHARP NORTH                         APPROX. 6.3 KM 2641019.5 |
 HV6106|---------------------------------------------------------------------|
 HV6106
 HV6106                          SUPERSEDED SURVEY CONTROL
 HV6106
 HV6106  NAD 83(1986)-  38 37 52.80990(N)    076 17 34.86261(W) AD(       ) 3
 HV6106  NAD 27      -  38 37 52.38000(N)    076 17 36.04900(W) AD(       ) 3
 HV6106  USSD        -  38 37 52.76500(N)    076 17 35.85000(W) AD(       ) 3
 HV6106
 HV6106.Superseded values are not recommended for survey control.
 HV6106
 HV6106.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6106.See file dsdata.pdf to determine how the superseded data were derived.
 HV6106
 HV6106
 HV6106  HISTORY     - Date     Condition        Report By
 HV6106  HISTORY     - 1898     MONUMENTED       CGS
 HV6106  HISTORY     - 1902     MARK NOT FOUND   CGS
 HV6106
 HV6106                          STATION DESCRIPTION
 HV6106
 HV6106'DESCRIBED BY COAST AND GEODETIC SURVEY 1902 (FWP)
 HV6106'IN AN OLD CULTIVATED FIELD, 17 PACES FROM BLUFF ON NW CORNER OF
 HV6106'COOKS POINT, IN LINE OF OLD FENCE FILLED WITH LOCUST TREES, 27
 HV6106'PACES FROM ITS JUNCTION WITH A FENCE RUNNING S, AND 25 PACES FROM
 HV6106'A LARGE CHERRY TREE.  IN 1902 IT WAS REPORTED THAT THE BLUFF WAS
 HV6106'RAPIDLY WASHING AWAY AND THE STATION LIABLE TO DESTRUCTION.  NO
 HV6106'RECORD OF STATION MARKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5787 ***********************************************************************
 JV5787  DESIGNATION -  COOL
 JV5787  PID         -  JV5787
 JV5787  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5787  COUNTRY     -  US
 JV5787  USGS QUAD   -  ROUND BAY (2016)
 JV5787
 JV5787                         *CURRENT SURVEY CONTROL
 JV5787  ______________________________________________________________________
 JV5787* NAD 83(1991) POSITION- 39 00 53.72608(N) 076 30 46.63412(W)   ADJUSTED
 JV5787* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5787  ______________________________________________________________________
 JV5787  GEOID HEIGHT    -        -33.241 (meters)                     GEOID18
 JV5787  LAPLACE CORR    -         -3.93  (seconds)                    DEFLEC18
 JV5787  HORZ ORDER      -  THIRD
 JV5787
 JV5787.The horizontal coordinates were established by classical geodetic methods
 JV5787.and adjusted by the National Geodetic Survey in January 1992.
 JV5787
 JV5787.The orthometric height was scaled from a topographic map.
 JV5787
 JV5787.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5787.GEOID18 height accuracy estimate available here.
 JV5787
 JV5787.Click photographs - Photos may exist for this station.
 JV5787
 JV5787.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5787
 JV5787. The following values were computed from the NAD 83(1991) position.
 JV5787
 JV5787;                    North         East     Units Scale Factor Converg.
 JV5787;SPC MD       -   149,775.437   442,179.994   MT  0.99995279   +0 18 20.5
 JV5787;SPC MD       -   491,388.25  1,450,718.86   sFT  0.99995279   +0 18 20.5
 JV5787;UTM  18      - 4,319,521.543   369,015.000   MT  0.99981126   -0 57 09.3
 JV5787
 JV5787!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5787!SPC MD       -   1.00000510  x   0.99995279  =   0.99995789
 JV5787!UTM  18      -   1.00000510  x   0.99981126  =   0.99981636
 JV5787
 JV5787:                Primary Azimuth Mark                     Grid Az
 JV5787:SPC MD       -  SPRING                                   127 00 54.7
 JV5787:UTM  18      -  SPRING                                   128 16 24.5
 JV5787
 JV5787_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6901419521(NAD 83)
 JV5787
 JV5787|---------------------------------------------------------------------|
 JV5787| PID    Reference Object                     Distance      Geod. Az  |
 JV5787|                                                           dddmmss.s |
 JV5787| CB1106 COOL RM                               7.250 METERS 01510     |
 JV5787| JV5767 SPRING                              APPROX. 1.1 KM 1271915.2 |
 JV5787|---------------------------------------------------------------------|
 JV5787
 JV5787                          SUPERSEDED SURVEY CONTROL
 JV5787
 JV5787  NAD 83(1986)-  39 00 53.72236(N)    076 30 46.64521(W) AD(       ) 3
 JV5787  NAD 27      -  39 00 53.32200(N)    076 30 47.78400(W) AD(       ) 3
 JV5787  USSD        -  39 00 53.67900(N)    076 30 47.62800(W) AD(       ) 3
 JV5787
 JV5787.Superseded values are not recommended for survey control.
 JV5787
 JV5787.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5787.See file dsdata.pdf to determine how the superseded data were derived.
 JV5787
 JV5787
 JV5787  HISTORY     - Date     Condition        Report By
 JV5787  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5787  HISTORY     - 1906     GOOD             CGS
 JV5787  HISTORY     - 1934     MARK NOT FOUND   CGS
 JV5787  HISTORY     - 20010331 MARK NOT FOUND   NGS
 JV5787  HISTORY     - 20020120 MARK NOT FOUND   USPSQD
 JV5787
 JV5787                          STATION DESCRIPTION
 JV5787
 JV5787'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5787'ON NE SHORE OF SEVERN RIVER, ON LOW POINT OF LAND BETWEEN
 JV5787'COOLSPRING CREEK AND CHASE CREEK, ABOUT 1-1/4 MILES ABOVE
 JV5787'MARYLAND ELECTRIC RAILWAY BRIDGE, ABOUT 2 FEET ABOVE AND 20 FEET
 JV5787'BACK FROM HIGH-WATER MARK, AND 7 FEET S OF A SMALL DRAIN DITCH
 JV5787'2 FEET WIDE.  STATION MARK IS NAIL IN PINE STUB INSIDE 4-INCH
 JV5787'TILE PIPE SET WITH TOP EVEN WITH SURFACE OF GROUND.  REFERENCE
 JV5787'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5787'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5787'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.
 JV5787'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP
 JV5787'OF POST.  IT IS 7.25 METERS (23.79 FEET) FROM STATION IN
 JV5787'N 15 DEG 09 MIN E.  DISTANCES AND BEARINGS FROM THE
 JV5787'STATION OF OTHER POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY ON
 JV5787'SMALL WHITE SHANTY ON OPPOSITE SHORE, 1/2 MILE, S 27 DEG 19
 JV5787'MIN W.  CHIMNEY ON YELLOW HOUSE ON OPPOSITE SHORE, 1 MILE,
 JV5787'N 67 DEG 05 MIN W.  W CHIMNEY OF HOUSE, 1/2 MILE, N 25 DEG 38
 JV5787'MIN W.  NAIL IN BLAZE IN 4-INCH PERSIMMON TREE, 16.50
 JV5787'METERS (54.1 FEET), N 21 DEG 59 MIN W.  NAIL IN BLAZE IN 12-INCH
 JV5787'OAK TREE, 14.82 METERS (48.6 FEET), S 75 DEG 16 MIN E.  WATER
 JV5787'TOWER OPPOSITE NAVAL ACADEMY, 2-1/2 MILES, S 50 DEG 07 MIN E.
 JV5787'CHIMNEY ON WHITE HOUSE ON OPPOSITE SHORE, 1/2 MILE, S 12 DEG 57
 JV5787'MIN E.
 JV5787
 JV5787                          STATION RECOVERY (1934)
 JV5787
 JV5787'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5787'THE STATION COULD NOT BE RECOVERED AS DESCRIBED.  THE REFERENCE
 JV5787'MARK (M.S.F.S. MONUMENT) WAS LOCATED AND IS 3 INCHES ABOVE
 JV5787'SURFACE OF GROUND.  NONE OF THE OTHER POINTS OF REFERENCE COULD
 JV5787'BE IDENTIFIED.  NEITHER THE OAK TREE NOR THE PERSIMMON TREE NOW
 JV5787'STAND.  IT IS RECOMMENDED THAT THE STATION BE RECORDED AS LOST.
 JV5787
 JV5787                          STATION RECOVERY (2001)
 JV5787
 JV5787'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV5787'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV5787
 JV5787                          STATION RECOVERY (2002)
 JV5787
 JV5787'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV5787'MD SHELLFISH MONUMENT DESTROYED IN 2001
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4846 ***********************************************************************
 JV4846  DESIGNATION -  COOL 2 1898
 JV4846  PID         -  JV4846
 JV4846  STATE/COUNTY-  MD/CECIL
 JV4846  COUNTRY     -  US
 JV4846  USGS QUAD   -  SPESUTIE (2016)
 JV4846
 JV4846                         *CURRENT SURVEY CONTROL
 JV4846  ______________________________________________________________________
 JV4846* NAD 83(1991) POSITION- 39 24 10.13749(N) 076 02 01.25349(W)   ADJUSTED
 JV4846* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 JV4846  ______________________________________________________________________
 JV4846  GEOID HEIGHT    -        -33.366 (meters)                     GEOID18
 JV4846  LAPLACE CORR    -         -1.01  (seconds)                    DEFLEC18
 JV4846  HORZ ORDER      -  THIRD
 JV4846
 JV4846.The horizontal coordinates were established by classical geodetic methods
 JV4846.and adjusted by the National Geodetic Survey in January 1992.
 JV4846
 JV4846.The orthometric height was scaled from a topographic map.
 JV4846
 JV4846.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4846.GEOID18 height accuracy estimate available here.
 JV4846
 JV4846.Click photographs - Photos may exist for this station.
 JV4846
 JV4846.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4846
 JV4846. The following values were computed from the NAD 83(1991) position.
 JV4846
 JV4846;                    North         East     Units Scale Factor Converg.
 JV4846;SPC MD       -   193,165.647   483,229.774   MT  0.99999209   +0 36 23.4
 JV4846;SPC MD       -   633,744.29  1,585,396.35   sFT  0.99999209   +0 36 23.4
 JV4846;UTM  18      - 4,361,988.693   411,000.491   MT  0.99969752   -0 39 22.3
 JV4846
 JV4846!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4846!SPC MD       -   1.00000449  x   0.99999209  =   0.99999658
 JV4846!UTM  18      -   1.00000449  x   0.99969752  =   0.99970201
 JV4846
 JV4846:                Primary Azimuth Mark                     Grid Az
 JV4846:SPC MD       -  HOWELL PT 2                              242 02 14.9
 JV4846:UTM  18      -  HOWELL PT 2                              243 18 00.6
 JV4846
 JV4846_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1100061988(NAD 83)
 JV4846
 JV4846|---------------------------------------------------------------------|
 JV4846| PID    Reference Object                     Distance      Geod. Az  |
 JV4846|                                                           dddmmss.s |
 JV4846| JV4886 HOWELL PT 2                         APPROX. 7.4 KM 2423838.3 |
 JV4846|---------------------------------------------------------------------|
 JV4846
 JV4846                          SUPERSEDED SURVEY CONTROL
 JV4846
 JV4846  NAD 83(1986)-  39 24 10.13003(N)    076 02 01.26019(W) AD(       ) 3
 JV4846  NAD 27      -  39 24 09.74100(N)    076 02 02.45300(W) AD(       ) 3
 JV4846  USSD        -  39 24 10.11100(N)    076 02 02.29200(W) AD(       ) 3
 JV4846
 JV4846.Superseded values are not recommended for survey control.
 JV4846
 JV4846.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4846.See file dsdata.pdf to determine how the superseded data were derived.
 JV4846
 JV4846_MARKER: Z = SEE DESCRIPTION
 JV4846_SETTING: 0 = UNSPECIFIED SETTING
 JV4846_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4846
 JV4846  HISTORY     - Date     Condition        Report By
 JV4846  HISTORY     - 1898     MONUMENTED       CGS
 JV4846  HISTORY     - 1902     GOOD             CGS
 JV4846
 JV4846                          STATION DESCRIPTION
 JV4846
 JV4846'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 JV4846'ON EASTERN SHORE OF CHESAPEAKE BAY, ABOUT 1 MILE N OF MOUTH OF
 JV4846'SASSAFRAS RIVER, ON THE EDGE OF A BLUFF, SURROUNDED BY
 JV4846'WOODS.  THE STATION IS MARKED BY A 4- BY 4-INCH BOX SET WITH THE
 JV4846'TOP FLUSH WITH THE SURFACE.  IN 1898 A 15-INCH BLAZED WHITE OAK
 JV4846'WAS 38.4 FEET SE OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6288 ***********************************************************************
 JV6288  DESIGNATION -  COOL BRANCH
 JV6288  PID         -  JV6288
 JV6288  STATE/COUNTY-  MD/HARFORD
 JV6288  COUNTRY     -  US
 JV6288  USGS QUAD   -  BEL AIR (2016)
 JV6288
 JV6288                         *CURRENT SURVEY CONTROL
 JV6288  ______________________________________________________________________
 JV6288* NAD 83(2011) POSITION- 39 34 59.17473(N) 076 15 30.49929(W)   ADJUSTED
 JV6288* NAD 83(2011) ELLIP HT-    65.922 (meters)        (06/27/12)   ADJUSTED
 JV6288* NAD 83(2011) EPOCH   -  2010.00
 JV6288* NAVD 88 ORTHO HEIGHT -    98.798 (meters)      324.14  (feet) ADJUSTED
 JV6288  ______________________________________________________________________
 JV6288  GEOID HEIGHT    -        -32.848 (meters)                     GEOID18
 JV6288  NAD 83(2011) X  -  1,169,273.908 (meters)                     COMP
 JV6288  NAD 83(2011) Y  - -4,781,490.283 (meters)                     COMP
 JV6288  NAD 83(2011) Z  -  4,042,460.815 (meters)                     COMP
 JV6288  LAPLACE CORR    -         -2.96  (seconds)                    DEFLEC18
 JV6288  DYNAMIC HEIGHT  -         98.749 (meters)      323.98  (feet) COMP
 JV6288  MODELED GRAVITY -    980,129.0   (mgal)                       NAVD 88
 JV6288
 JV6288  VERT ORDER      -  FIRST     CLASS II
 JV6288
 JV6288  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6288  Standards:
 JV6288         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6288            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6288  -------------------------------------------------------------------
 JV6288  NETWORK    1.53   4.96           0.62   0.60   2.53      0.39365485
 JV6288  -------------------------------------------------------------------
 JV6288  Click here for local accuracies and other accuracy information.
 JV6288
 JV6288.The horizontal coordinates were established by GPS observations
 JV6288.and adjusted by the National Geodetic Survey in June 2012.
 JV6288
 JV6288.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6288.been affixed to the stable North American tectonic plate. See 
 JV6288.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6288
 JV6288.The horizontal coordinates are valid at the epoch date displayed above
 JV6288.which is a decimal equivalence of Year/Month/Day.
 JV6288
 JV6288.The orthometric height was determined by differential leveling and
 JV6288.adjusted by the NATIONAL GEODETIC SURVEY
 JV6288.in June 1991.
 JV6288
 JV6288.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6288.GEOID18 height accuracy estimate available here.
 JV6288
 JV6288.Click photographs - Photos may exist for this station.
 JV6288
 JV6288.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6288
 JV6288.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6288
 JV6288.The ellipsoidal height was determined by GPS observations
 JV6288.and is referenced to NAD 83.
 JV6288
 JV6288.The dynamic height is computed by dividing the NAVD 88
 JV6288.geopotential number by the normal gravity value computed on the
 JV6288.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6288.degrees latitude (g = 980.6199 gals.).
 JV6288
 JV6288.The modeled gravity was interpolated from observed gravity values.
 JV6288
 JV6288. The following values were computed from the NAD 83(2011) position.
 JV6288
 JV6288;                    North         East     Units Scale Factor Converg.
 JV6288;SPC MD       -   213,000.514   463,706.289   MT  1.00002600   +0 27 55.5
 JV6288;SPC MD       -   698,819.19  1,521,343.05   sFT  1.00002600   +0 27 55.5
 JV6288;UTM  18      - 4,382,243.877   391,925.132   MT  0.99974380   -0 48 07.1
 JV6288
 JV6288!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6288!SPC MD       -   0.99998966  x   1.00002600  =   1.00001566
 JV6288!UTM  18      -   0.99998966  x   0.99974380  =   0.99973346
 JV6288
 JV6288:                Primary Azimuth Mark                     Grid Az
 JV6288:SPC MD       -  COOL BRANCH AZ MK                        176 32 34.7
 JV6288:UTM  18      -  COOL BRANCH AZ MK                        177 48 37.3
 JV6288
 JV6288_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9192582243(NAD 83)
 JV6288
 JV6288|---------------------------------------------------------------------|
 JV6288| PID    Reference Object                     Distance      Geod. Az  |
 JV6288|                                                           dddmmss.s |
 JV6288| JV6323 COOL BRANCH AZ MK                   APPROX. 0.7 KM 1770030.2 |
 JV6288|---------------------------------------------------------------------|
 JV6288
 JV6288                          SUPERSEDED SURVEY CONTROL
 JV6288
 JV6288  NAD 83(2007)-  39 34 59.17481(N)    076 15 30.50000(W) AD(2002.00) 0
 JV6288  ELLIP H (02/10/07)   65.936  (m)                       GP(2002.00)    
 JV6288  ELLIP H (09/18/02)   65.962  (m)                       GP(       ) 4 2
 JV6288  NAD 83(1991)-  39 34 59.17429(N)    076 15 30.49998(W) AD(       ) 1
 JV6288  ELLIP H (01/27/92)   65.953  (m)                       GP(       ) 4 1
 JV6288  NAD 83(1986)-  39 34 59.16714(N)    076 15 30.50657(W) AD(       ) 1
 JV6288  NGVD 29              99.04   (m)          324.9    (f) LEVELING    3  
 JV6288
 JV6288.Superseded values are not recommended for survey control.
 JV6288
 JV6288.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6288.See file dsdata.pdf to determine how the superseded data were derived.
 JV6288
 JV6288_MARKER: DD = SURVEY DISK
 JV6288_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6288_STAMPING: 43 COOL BRANCH 1989
 JV6288_MARK LOGO: MD-025
 JV6288_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6288_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6288+STABILITY: SURFACE MOTION
 JV6288_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6288+SATELLITE: SATELLITE OBSERVATIONS - May 08, 2014
 JV6288
 JV6288  HISTORY     - Date     Condition        Report By
 JV6288  HISTORY     - 1989     MONUMENTED       RDA
 JV6288  HISTORY     - 20080402 POOR             GPSSS
 JV6288  HISTORY     - 20090618 GOOD             MDSHA
 JV6288  HISTORY     - 20130218 GOOD             GPSSS
 JV6288  HISTORY     - 20140508 GOOD             GPSSS
 JV6288
 JV6288                          STATION DESCRIPTION
 JV6288
 JV6288'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6288'THE STATION IS LOCATED IN EASTERN HARFORD COUNTY, MARYLAND ABOUT 1.5
 JV6288'MILES NORTH OF THE VILLAGE OF CHURCHVILLE.  TO REACH THE STATION FROM
 JV6288'THE INTERSECTION OF STATE HIGHWAY 22 AND STATE HIGHWAY 136 PROCEED
 JV6288'NORTH ALONG HIGHWAY 136 1.75 MILES TO THE STATION ON THE RIGHT.  THE
 JV6288'STATION IS A STANDARD HARFORD COUNTY STATION DISC SET IN CONCRETE
 JV6288'ABOUT 1 INCH BELOW GROUND STAMPED 43 COOL BRANCH 1989.  THE STATION
 JV6288'IS 30.5 FEET SOUTHEAST OF THE CENTERLINE OF HIGHWAY 136, 52.9 FEET
 JV6288'SOUTHWEST OF C AND P OF MARYLAND TELEPHONE POLE NUMBER 51, 9.1 FEET
 JV6288'NORTHWEST OF WHITE BOARD FENCE.
 JV6288
 JV6288                          STATION RECOVERY (2008)
 JV6288
 JV6288'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (MB)
 JV6288'RECOVERED BY MIKE BUTLER, OF NORTHERN BAY SURVEYS.
 JV6288
 JV6288                          STATION RECOVERY (2009)
 JV6288
 JV6288'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV6288'THE AZIMUTH MARK IS NO LONGER VISIBLE FROM THE STATION.
 JV6288
 JV6288                          STATION RECOVERY (2013)
 JV6288
 JV6288'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 JV6288'RECOVERED BY MIKE BUTLER, DEWEY LILLY AND MIKE ESTES OF NORTHERN BAY
 JV6288'LAND PLANNING, ENGINEERING AND SURVEYING CORP.
 JV6288
 JV6288                          STATION RECOVERY (2014)
 JV6288
 JV6288'RECOVERY NOTE BY GPS SALES AND SERVICES 2014 (MB)
 JV6288'RECOVERED BY MIKE BUTLER AND DEWEY LILLY OF NORTHERN BAY SURVEYING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6323 ***********************************************************************
 JV6323  DESIGNATION -  COOL BRANCH AZ MK
 JV6323  PID         -  JV6323
 JV6323  STATE/COUNTY-  MD/HARFORD
 JV6323  COUNTRY     -  US
 JV6323  USGS QUAD   -  BEL AIR (2016)
 JV6323
 JV6323                         *CURRENT SURVEY CONTROL
 JV6323  ______________________________________________________________________
 JV6323* NAD 83(2011) POSITION- 39 34 34.99871(N) 076 15 28.86662(W)   ADJUSTED
 JV6323* NAD 83(2011) ELLIP HT-    57.694 (meters)        (06/27/12)   ADJUSTED
 JV6323* NAD 83(2011) EPOCH   -  2010.00
 JV6323* NAVD 88 ORTHO HEIGHT -    90.576 (meters)      297.16  (feet) ADJUSTED
 JV6323  ______________________________________________________________________
 JV6323  GEOID HEIGHT    -        -32.857 (meters)                     GEOID18
 JV6323  NAD 83(2011) X  -  1,169,423.101 (meters)                     COMP
 JV6323  NAD 83(2011) Y  - -4,781,936.337 (meters)                     COMP
 JV6323  NAD 83(2011) Z  -  4,041,880.900 (meters)                     COMP
 JV6323  LAPLACE CORR    -         -2.93  (seconds)                    DEFLEC18
 JV6323  DYNAMIC HEIGHT  -         90.531 (meters)      297.02  (feet) COMP
 JV6323  MODELED GRAVITY -    980,128.3   (mgal)                       NAVD 88
 JV6323
 JV6323  VERT ORDER      -  FIRST     CLASS II
 JV6323
 JV6323  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6323  Standards:
 JV6323         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6323            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6323  -------------------------------------------------------------------
 JV6323  NETWORK    1.69   5.53           0.72   0.63   2.82      0.35943560
 JV6323  -------------------------------------------------------------------
 JV6323  Click here for local accuracies and other accuracy information.
 JV6323
 JV6323.The horizontal coordinates were established by GPS observations
 JV6323.and adjusted by the National Geodetic Survey in June 2012.
 JV6323
 JV6323.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6323.been affixed to the stable North American tectonic plate. See 
 JV6323.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6323
 JV6323.The horizontal coordinates are valid at the epoch date displayed above
 JV6323.which is a decimal equivalence of Year/Month/Day.
 JV6323
 JV6323.The orthometric height was determined by differential leveling and
 JV6323.adjusted by the NATIONAL GEODETIC SURVEY
 JV6323.in June 1991.
 JV6323
 JV6323.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6323.GEOID18 height accuracy estimate available here.
 JV6323
 JV6323.Click photographs - Photos may exist for this station.
 JV6323
 JV6323.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6323
 JV6323.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6323
 JV6323.The ellipsoidal height was determined by GPS observations
 JV6323.and is referenced to NAD 83.
 JV6323
 JV6323.The dynamic height is computed by dividing the NAVD 88
 JV6323.geopotential number by the normal gravity value computed on the
 JV6323.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6323.degrees latitude (g = 980.6199 gals.).
 JV6323
 JV6323.The modeled gravity was interpolated from observed gravity values.
 JV6323
 JV6323. The following values were computed from the NAD 83(2011) position.
 JV6323
 JV6323;                    North         East     Units Scale Factor Converg.
 JV6323;SPC MD       -   212,255.230   463,751.311   MT  1.00002455   +0 27 56.5
 JV6323;SPC MD       -   696,374.03  1,521,490.76   sFT  1.00002455   +0 27 56.5
 JV6323;UTM  18      - 4,381,497.990   391,953.652   MT  0.99974373   -0 48 05.6
 JV6323
 JV6323!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6323!SPC MD       -   0.99999095  x   1.00002455  =   1.00001550
 JV6323!UTM  18      -   0.99999095  x   0.99974373  =   0.99973468
 JV6323
 JV6323:                Primary Azimuth Mark                     Grid Az
 JV6323:SPC MD       -  COOL BRANCH                              356 32 34.7
 JV6323:UTM  18      -  COOL BRANCH                              357 48 36.8
 JV6323
 JV6323_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9195381497(NAD 83)
 JV6323
 JV6323|---------------------------------------------------------------------|
 JV6323| PID    Reference Object                     Distance      Geod. Az  |
 JV6323|                                                           dddmmss.s |
 JV6323| JV6288 COOL BRANCH                         APPROX. 0.7 KM 3570031.2 |
 JV6323|---------------------------------------------------------------------|
 JV6323
 JV6323                          SUPERSEDED SURVEY CONTROL
 JV6323
 JV6323  NAD 83(2007)-  39 34 34.99879(N)    076 15 28.86733(W) AD(2002.00) 0
 JV6323  ELLIP H (02/10/07)   57.709  (m)                       GP(2002.00)    
 JV6323  ELLIP H (09/18/02)   57.735  (m)                       GP(       ) 4 2
 JV6323  NAD 83(1991)-  39 34 34.99830(N)    076 15 28.86731(W) AD(       ) 1
 JV6323  ELLIP H (01/27/92)   57.725  (m)                       GP(       ) 4 1
 JV6323  NAD 83(1986)-  39 34 34.99116(N)    076 15 28.87389(W) AD(       ) 1
 JV6323  NGVD 29              90.82   (m)          298.0    (f) LEVELING    3  
 JV6323
 JV6323.Superseded values are not recommended for survey control.
 JV6323
 JV6323.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6323.See file dsdata.pdf to determine how the superseded data were derived.
 JV6323
 JV6323_MARKER: DZ = AZIMUTH MARK DISK
 JV6323_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6323_STAMPING: 43 COOL BRANCH 1989
 JV6323_MARK LOGO: MD-025
 JV6323_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6323_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6323+STABILITY: SURFACE MOTION
 JV6323_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6323+SATELLITE: SATELLITE OBSERVATIONS - June 18, 2009
 JV6323
 JV6323  HISTORY     - Date     Condition        Report By
 JV6323  HISTORY     - 1989     MONUMENTED       RDA
 JV6323  HISTORY     - 19900105 GOOD
 JV6323  HISTORY     - 20090612 GOOD             MDSHA
 JV6323  HISTORY     - 20090618 GOOD             MDSHA
 JV6323
 JV6323                          STATION DESCRIPTION
 JV6323
 JV6323'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6323'THE STATION IS LOCATED IN EASTERN HARFORD COUNTY, MARYLAND ABOUT 1.5
 JV6323'MILES NORTH OF THE VILLAGE OF CHURCHVILLE.  TO REACH THE STATION FROM
 JV6323'THE INTERSECTION OF STATE HIGHWAY 22 AND STATE HIGHWAY 136 PROCEED
 JV6323'NORTH ALONG HIGHWAY 136 1.75 MILES TO THE STATION ON THE RIGHT.  TO
 JV6323'REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTH ALONG HIGHWAY
 JV6323'136 0.45 MILES TO THE MARK ON THE RIGHT.  THE MARK IS A STANDARD
 JV6323'HARFORD COUNTY AZIMUTH DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND
 JV6323'STAMPED 43 COOL BRANCH 1989.  THE MARK IS 31.4 FEET NORTHEAST OF THE
 JV6323'SOUTHWEST CORNER OF A SPLIT RAIL FENCE, 19.3 FEET SOUTHWEST OF C AND
 JV6323'P OF MARYLAND TELEPHONE POLE NUMBER 36, 34.5 NORTHWEST OF THE
 JV6323'CENTERLINE OF HIGHWAY 136.
 JV6323
 JV6323                          STATION RECOVERY (1990)
 JV6323
 JV6323'RECOVERED 1990
 JV6323'RECOVERED IN GOOD CONDITION.
 JV6323
 JV6323                          STATION RECOVERY (2009)
 JV6323
 JV6323'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (DCS)
 JV6323'THE FENCE CORNER IS GONE. THERE ARE NOW TWO FENCES SURROUNDING A HORSE
 JV6323'PASTURE. THE MARK IS 5.5 FEET INSIDE THE INNER FENCE (POST AND WIRE).
 JV6323'MAY NOT BE SUITABLE FOR GPS WHEN HORSES ARE PRESENT UNLESS THE
 JV6323'EQUIPMENT IS ACCOMPANIED BY SOMEONE.
 JV6323
 JV6323                          STATION RECOVERY (2009)
 JV6323
 JV6323'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV6323'THE FENCE CORNER IS GONE. THE MARK IS 5.5 FEET INSIDE THE INNER OF TWO
 JV6323'FENCES SURROUNDING A HORSE PASTURE. HORSES WERE PRESENT AT THE TIME OF
 JV6323'RECOVERY. USE OF THIS POINT FOR STATIC GPS OCCUPATIONS MAY NOT BE
 JV6323'RECOMMENDED DUE TO THEIR PRESENCE. THE STATION 'COOL BRANCH' IS NO
 JV6323'LONGER VISIBLE FROM THIS AZIMUTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4780 ***********************************************************************
 JV4780  DESIGNATION -  COOPER
 JV4780  PID         -  JV4780
 JV4780  STATE/COUNTY-  MD/CECIL
 JV4780  COUNTRY     -  US
 JV4780  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV4780
 JV4780                         *CURRENT SURVEY CONTROL
 JV4780  ______________________________________________________________________
 JV4780* NAD 83(1991) POSITION- 39 32 31.66257(N) 076 00 38.93913(W)   ADJUSTED
 JV4780* NAVD 88 ORTHO HEIGHT -    30.    (meters)       98.    (feet) SCALED
 JV4780  ______________________________________________________________________
 JV4780  GEOID HEIGHT    -        -33.239 (meters)                     GEOID18
 JV4780  LAPLACE CORR    -         -0.98  (seconds)                    DEFLEC18
 JV4780  HORZ ORDER      -  SECOND
 JV4780
 JV4780.The horizontal coordinates were established by classical geodetic methods
 JV4780.and adjusted by the National Geodetic Survey in January 1992.
 JV4780
 JV4780.The orthometric height was scaled from a topographic map.
 JV4780
 JV4780.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4780.GEOID18 height accuracy estimate available here.
 JV4780
 JV4780.Click photographs - Photos may exist for this station.
 JV4780
 JV4780.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4780
 JV4780. The following values were computed from the NAD 83(1991) position.
 JV4780
 JV4780;                    North         East     Units Scale Factor Converg.
 JV4780;SPC MD       -   208,653.003   485,031.491   MT  1.00001742   +0 37 15.0
 JV4780;SPC MD       -   684,555.73  1,591,307.48   sFT  1.00001742   +0 37 15.0
 JV4780;UTM  18      - 4,377,427.779   413,142.627   MT  0.99969288   -0 38 36.9
 JV4780
 JV4780!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4780!SPC MD       -   1.00000055  x   1.00001742  =   1.00001797
 JV4780!UTM  18      -   1.00000055  x   0.99969288  =   0.99969343
 JV4780
 JV4780:                Primary Azimuth Mark                     Grid Az
 JV4780:SPC MD       -  COOPER RM 1                              103 14 47.0
 JV4780:UTM  18      -  COOPER RM 1                              104 30 38.9
 JV4780
 JV4780_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1314277427(NAD 83)
 JV4780
 JV4780|---------------------------------------------------------------------|
 JV4780| PID    Reference Object                     Distance      Geod. Az  |
 JV4780|                                                           dddmmss.s |
 JV4780| CB1107 COOPER RM 1                                        1035202.0 |
 JV4780| CB1108 COOPER RM 2                          44.620 METERS 20651     |
 JV4780| JV4861 AIRWAY BEACON FLASHING RED          APPROX.12.1 KM 2330511.5 |
 JV4780| CB1109 COOPER RM 3                          43.168 METERS 27109     |
 JV4780| JV4779 PERRY POINT VET HOSP SE TANK        APPROX. 4.3 KM 2841729.5 |
 JV4780|---------------------------------------------------------------------|
 JV4780
 JV4780                          SUPERSEDED SURVEY CONTROL
 JV4780
 JV4780  NAD 83(1986)-  39 32 31.65629(N)    076 00 38.94459(W) AD(       ) 2
 JV4780  NAD 27      -  39 32 31.24980(N)    076 00 40.13920(W) AD(       ) 2
 JV4780
 JV4780.Superseded values are not recommended for survey control.
 JV4780
 JV4780.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4780.See file dsdata.pdf to determine how the superseded data were derived.
 JV4780
 JV4780_MARKER: DS = TRIANGULATION STATION DISK
 JV4780_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4780_STAMPING: COOPER 1933
 JV4780_MARK LOGO: CGS
 JV4780_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4780+STABILITY: SURFACE MOTION
 JV4780
 JV4780  HISTORY     - Date     Condition        Report By
 JV4780  HISTORY     - 1933     MONUMENTED       CGS
 JV4780  HISTORY     - 1937     GOOD             CGS
 JV4780  HISTORY     - 1961     GOOD             CGS
 JV4780
 JV4780                          STATION DESCRIPTION
 JV4780
 JV4780'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV4780'THIS IS A SECOND-ORDER STATION ON PROPERTY OWNED BY THE CARPENTERS
 JV4780'POINT REALTY COMPANY OF CARPENTERS POINT, ABOUT 0.5 MILE NW OF
 JV4780'RUINS (BURNT IN 1931) OF GOLF CLUB ON HIGH GROUND, 12 PACES S OF
 JV4780'S EDGE OF WESTERNMOST GREEN (NO.4), 164.9 FEET E OF E CORNER OF
 JV4780'PRO SHOP, AND 230.9 FEET NW OF TRIPLE, WILD, CHERRY TREE.
 JV4780'
 JV4780'SURFACE, UNDERGROUND, AND REFERENCE MARKS NOS.1, 2, AND 3, ARE
 JV4780'STANDARD BRONZE DISKS SET IN CONCRETE.
 JV4780'
 JV4780'REFERENCE MARK NO.1, THE AZIMUTH MARK, IS 6 FEET NW OF NW CORNER
 JV4780'OF MASONRY FOUNDATION OF BURNT CLUB HOUSE.  IT PROJECTS 8 INCHES
 JV4780'ABOVE GROUND.
 JV4780'
 JV4780'REFERENCE MARK NO.2 IS 45.10 FEET SE OF E CORNER OF PRO SHOP, AND
 JV4780'66 FEET E OF CENTER OF DIM ROAD.  IT PROJECTS 10 INCHES ABOVE
 JV4780'GROUND.
 JV4780'
 JV4780'REFERENCE MARK NO.3 IS 122.4 FEET N OF N CORNER OF PRO SHOP, 61
 JV4780'FEET E OF CENTER OF DIM ROAD, PROJECTING 8 INCHES ABOVE GROUND.
 JV4780'
 JV4780'TO REACH STATION, LEAVE U.S. HIGHWAY 40 AT WEBERS BRIDGE 4.7
 JV4780'MILES N OF PERRYVILLE RAILROAD STATION.  GO N 0.4 MILE TO SIGN,
 JV4780'CARPENTERS POINT 3-1/2 MILES, TURN RIGHT, GO 2.6 MILES TO END OF
 JV4780'HARD SURFACE ROAD, TURN LEFT FOLLOWING SIGN BECKS 0.3 MILE E,
 JV4780'TURN RIGHT ALONG NORTHEAST RIVER, GO 0.4 MILE TO RUINS OF OLD
 JV4780'CLUB HOUSE, AND TURN RIGHT FOLLOWING DIM ROAD 0.5 MILE TO
 JV4780'STATION ON HIGHEST GROUND ON GOLF COURSE.
 JV4780'
 JV4780'HEIGHT OF LIGHT ABOVE STATION MARK 15 METERS.
 JV4780
 JV4780                          STATION RECOVERY (1937)
 JV4780
 JV4780'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JV4780'THE STATION WAS RECOVERED IN GOOD CONDITION.
 JV4780'
 JV4780'A REVISED DESCRIPTION FOLLOWS--THIS IS A SECOND-ORDER STATION
 JV4780'ON PROPERTY OWNED BY THE CARPENTERS POINT REALTY COMPANY, ON
 JV4780'CARPENTERS POINT, ABOUT 0.5 MILE NW OF RUINS (BURNT IN 1931) OF
 JV4780'GOLF CLUB.  THE STATION IS ON THE S SLOPE OF THE HIGHEST GROUND
 JV4780'OF CARPENTERS POINT, 12 PACES S OF S EDGE OF WESTERNMOST GREEN
 JV4780'(NO.4), AND 230.9 FEET W OF A TRIPLE TRUNK WILD CHERRY TREE (THE
 JV4780'MOST PROMINENT LONE TREE IN VICINITY).  THE PRO SHOP MENTIONED
 JV4780'IN THE ORIGINAL DESCRIPTION IS GONE.
 JV4780'
 JV4780'TO REACH STATION, LEAVE U.S. HIGHWAY 40 AT WEBERS BRIDGE 4.7
 JV4780'MILES N OF PERRYVILLE RAILROAD STATION.  GO E 0.4 MILE TO SIGN
 JV4780'CARPENTER POINT 3-1/2 MILES, TURN RIGHT, GO 2.6 MILES TO END OF
 JV4780'HARD SURFACE ROAD, TURN LEFT FOLLOWING SIGN BECKS 0.3 MILE E,
 JV4780'TURN RIGHT ALONG NORTHEAST RIVER, GO 0.4 MILE TO RUINS OF OLD
 JV4780'CLUB HOUSE, TURN RIGHT AND GO W 0.5 MILE TO STATION ON HIGHEST
 JV4780'GROUND OF GOLF COURSE.
 JV4780
 JV4780                          STATION RECOVERY (1961)
 JV4780
 JV4780'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JV4780'THE STATION MARK, REFERENCE MARK 2 AND 3 WERE RECOVERED IN GOOD
 JV4780'CONDITION.  THE AZIMUTH MARK WAS SEARCHED FOR BUT NOT RECOVERED.
 JV4780'
 JV4780'A REVISED DESCRIPTION FOLLOWS--TO REACH THE STATION FROM THE
 JV4780'JUNCTION OF U.S. HIGHWAY 40 AND U.S. HIGHWAY 222 AT THE EAST END
 JV4780'OF THE BRIDGE WHERE U.S. HIGHWAY 40 CROSSES THE SUSQUEHANNA RIVER,
 JV4780'GO EAST ON U.S. HIGHWAY 40 FOR 3.25 MILES TO A SIDE ROAD RIGHT,
 JV4780'(STATE HIGHWAY 7) TURN RIGHT AND GO 1.05 MILES TO A SIDE ROAD
 JV4780'RIGHT, TURN RIGHT, CROSSING A BRIDGE OVER A RAILROAD TRACK AND
 JV4780'GO SOUTHEAST ON THE MACADAM ROAD FOR 0.3 MILE TO A SIDE ROAD
 JV4780'RIGHT, TURN RIGHT AND GO SOUTHWEST ON A MACADAM ROAD FOR 2.5 MILES
 JV4780'TO WHERE THE MACADAM ROAD TURNS TO THE LEFT AND A GRAVELED
 JV4780'ROAD STRAIGHT AHEAD, CONTINUE STRAIGHT AHEAD ON THE
 JV4780'GRAVELED ROAD ALONG THE EAST SIDE OF A GOLF COURSE FOR 0.3 MILE
 JV4780'TO A WHITE HOUSE ON THE RIGHT, TURN RIGHT AND GO WEST ALONG
 JV4780'THE SOUTH SLOPE OF THE CULTIVATED FIELD FOR ABOUT 200.0 FEET
 JV4780'TO THE STATION AS DESCRIBED.
 JV4780'
 JV4780'THE STATION MARK, IS A STANDARD DISK STAMPED COOPER 1933, SET
 JV4780'IN TOP OF A 12 INCH CONCRETE CYLINDER WHICH PROJECTS 10 INCHES
 JV4780'ABOVE THE GROUND SURFACE.  IT IS 48.0 FEET SOUTH OF A EAST AND
 JV4780'WEST FENCE LINE, 133.0 FEET NORTH OF THE NORTHEAST CORNER OF A
 JV4780'CINDER BLOCK GARAGE AND 185.0 FEET WEST OF THE SOUTHWEST CORNER
 JV4780'OF A WHITE HOUSE.
 JV4780'
 JV4780'REFERENCE MARK 2, IS A STANDARD DISK STAMPED COOPER NO 2 1933,
 JV4780'SET IN TOP OF A 12 INCH CONCRETE CYLINDER WHICH PROJECTS 6 INCHES
 JV4780'ABOVE THE GROUND SURFACE.  IT IS 12.0 FEET SOUTH OF A EAST AND
 JV4780'WEST FENCE LINE, 92.6 FEET WEST OF THE NORTHEAST CORNER OF THE
 JV4780'CINDER BLOCK GARAGE, 253.0 FEET WEST-SOUTHWEST OF THE SOUTHWEST
 JV4780'CORNER OF THE WHITE HOUSE AND IS ABOUT 5 FEET LOWER THAN THE
 JV4780'STATION MARK.
 JV4780'
 JV4780'REFERENCE MARK 3, IS A STANDARD DISK STAMPED COOPER NO 3 1933,
 JV4780'SET IN TOP OF A 12 INCH CONCRETE CYLINDER WHICH PROJECTS 8 INCHES
 JV4780'ABOVE THE GROUND SURFACE.  IT IS 18.4 FEET NORTH OF THE EAST AND
 JV4780'WEST FENCE LINE, 214.0 FEET NORTHWEST OF THE NORTHEAST CORNER OF
 JV4780'THE CINDER BLOCK GARAGE, 326.6 FEET WEST OF THE SOUTHWEST CORNER
 JV4780'OF THE WHITE HOUSE AND IS ABOUT 3 FEET LOWER THAN THE STATION
 JV4780'MARK.
 JV4780'
 JV4780'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6604 ***********************************************************************
 HV6604  DESIGNATION -  COPPAGE
 HV6604  PID         -  HV6604
 HV6604  STATE/COUNTY-  MD/ST MARYS
 HV6604  COUNTRY     -  US
 HV6604  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6604
 HV6604                         *CURRENT SURVEY CONTROL
 HV6604  ______________________________________________________________________
 HV6604* NAD 83(1993) POSITION- 38 10 03.17748(N) 076 27 34.84018(W)   ADJUSTED
 HV6604* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6604  ______________________________________________________________________
 HV6604  GEOID HEIGHT    -        -34.701 (meters)                     GEOID18
 HV6604  LAPLACE CORR    -         -6.13  (seconds)                    DEFLEC18
 HV6604  HORZ ORDER      -  THIRD
 HV6604
 HV6604.The horizontal coordinates were established by classical geodetic methods
 HV6604.and adjusted by the National Geodetic Survey in November 1994.
 HV6604
 HV6604.The orthometric height was scaled from a topographic map.
 HV6604
 HV6604.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6604.GEOID18 height accuracy estimate available here.
 HV6604
 HV6604.Click photographs - Photos may exist for this station.
 HV6604
 HV6604.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6604
 HV6604. The following values were computed from the NAD 83(1993) position.
 HV6604
 HV6604;                    North         East     Units Scale Factor Converg.
 HV6604;SPC MD       -    55,740.656   447,350.587   MT  1.00002568   +0 20 20.8
 HV6604;SPC MD       -   182,875.80  1,467,682.72   sFT  1.00002568   +0 20 20.8
 HV6604;UTM  18      - 4,225,411.878   372,133.012   MT  0.99980136   -0 54 07.7
 HV6604
 HV6604!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6604!SPC MD       -   1.00000533  x   1.00002568  =   1.00003101
 HV6604!UTM  18      -   1.00000533  x   0.99980136  =   0.99980669
 HV6604
 HV6604:                Primary Azimuth Mark                     Grid Az
 HV6604:SPC MD       -  BELLO 1908                               041 50 19.0
 HV6604:UTM  18      -  BELLO 1908                               043 04 47.5
 HV6604
 HV6604_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7213325411(NAD 83)
 HV6604
 HV6604|---------------------------------------------------------------------|
 HV6604| PID    Reference Object                     Distance      Geod. Az  |
 HV6604|                                                           dddmmss.s |
 HV6604| HV6605 BELLO 1908                          APPROX. 1.1 KM 0421039.8 |
 HV6604| CX2642 COPPAGE RM                           11.500 METERS 26320     |
 HV6604|---------------------------------------------------------------------|
 HV6604
 HV6604                          SUPERSEDED SURVEY CONTROL
 HV6604
 HV6604  NAD 83(1991)-  38 10 03.17653(N)    076 27 34.84334(W) AD(       ) 3
 HV6604  NAD 83(1986)-  38 10 03.17732(N)    076 27 34.85651(W) AD(       ) 3
 HV6604  NAD 27      -  38 10 02.79000(N)    076 27 36.08600(W) AD(       ) 3
 HV6604  USSD        -  38 10 03.17400(N)    076 27 35.79500(W) AD(       ) 3
 HV6604
 HV6604.Superseded values are not recommended for survey control.
 HV6604
 HV6604.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6604.See file dsdata.pdf to determine how the superseded data were derived.
 HV6604
 HV6604_MARKER: Z = SEE DESCRIPTION
 HV6604_SETTING: 0 = UNSPECIFIED SETTING
 HV6604
 HV6604  HISTORY     - Date     Condition        Report By
 HV6604  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6604  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6604  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6604
 HV6604                          STATION DESCRIPTION
 HV6604
 HV6604'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6604'STATION IS ON THE WESTERN SHORE OF ST. MARYS RIVER, ABOUT 1/4 MILE
 HV6604'S OF ENTRANCE TO COOPER CREEK, AND 7/8 MILE NW OF WINDMILL POINT,
 HV6604'NEAR DENSELY WOODED LAND, ABOUT 25 FEET ABOVE HIGH WATER, 5 YARDS
 HV6604'SW OF EDGE OF BANK, 6 YARDS S OF EDGE OF BANK, 10 YARDS W OF
 HV6604'POINT WITH CEDAR TREE, AND 200 YARDS W OF REMAINS OF A PIER.
 HV6604'
 HV6604'STATION MARK IS CENTER OF 3-INCH SQUARE WOODEN BOX WITH TOP
 HV6604'FLUSH WITH SURFACE OF GROUND.
 HV6604'
 HV6604'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6604'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6604'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6604'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6604'11.50 METERS (37.7 FEET) FROM STATION S 83 DEG 21
 HV6604'MIN W.  DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 HV6604'FOLLOWS--NAIL IN BLAZE IN 3-INCH PINE TREE, 7.68 METERS (25.2
 HV6604'FEET), S 47 DEG 36 MIN W.  NAIL IN BLAZE IN 3-INCH GUM TREE, 10.96
 HV6604'METERS (36.0 FEET), S 78 DEG 41 MIN W.  NAIL IN BLAZE IN 12-INCH
 HV6604'GUM TREE, 7.32 METERS, (24.02 FEET), N 27 DEG 19 MIN W.  CHIMNEY
 HV6604'OF ST. MARYS SEMINARY, 2 MILES, N 44 DEG 38 MIN E.  NEAR PEAK
 HV6604'OF ROOF ON BROMES WHARF HOUSE, 1-7/8 MILES, N 45 DEG 25 MIN E.
 HV6604'CHIMNEY OF BROMES HOUSE, 1-7/8 MILES, N 52 DEG 53 MIN E.
 HV6604'CHIMNEY OF HOUSE, 7/8 MILE, N 86 DEG 51 MIN E.  CHIMNEY OF KENNEDYS
 HV6604'HOUSE, 1-1/4 MILES, S 68 DEG 27 MIN E.  LEFT CHIMNEY OF RALEYS
 HV6604'HOUSE, 1-5/8 MILES, S 53 DEG 40 MIN E.  CHIMNEY OF PRIESTS VILLA, 1
 HV6604'5/8 MILES, S 44 DEG 43 MIN E.  CHIMNEY, 1/2 MILE, S 41 DEG 04
 HV6604'MIN E.
 HV6604
 HV6604                          STATION RECOVERY (1942)
 HV6604
 HV6604'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6604'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED
 HV6604'FOR.  DUE TO THE STATIONS NATURE AND AGE, IT IS RECOMMENDED THAT
 HV6604'THE STATION BE CLASSIFIED AS DESTROYED.  ACCORDING TO LOCAL
 HV6604'INFORMATION, THE REFERENCE MARK WAS DESTROYED IN THE STORM OF
 HV6604'1933.
 HV6604
 HV6604                          STATION RECOVERY (1958)
 HV6604
 HV6604'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6604'THE BLAZE IN A 3 INCH PINE WAS FOUND.  REFERENCE MEASUREMENTS FROM
 HV6604'THE BLAZE TO THE PROBABLE LOCATION OF THE CENTER MARK, A 3-INCH
 HV6604'WOODEN BOX, AND FROM THERE TO THE PROBABLE LOCATION OF THE
 HV6604'REFERENCE MARK PLACED IT WELL OUTSIDE THE PRESENT SHORELINE.  THE
 HV6604'STATION AND REFERENCE MARK SHOULD BE CONSIDERED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2943 ***********************************************************************
 JV2943  DESIGNATION -  COPPER BOLT
 JV2943  PID         -  JV2943
 JV2943  STATE/COUNTY-  MD/WASHINGTON
 JV2943  COUNTRY     -  US
 JV2943  USGS QUAD   -  HARPERS FERRY (2016)
 JV2943
 JV2943                         *CURRENT SURVEY CONTROL
 JV2943  ______________________________________________________________________
 JV2943* NAD 83(1986) POSITION- 39 20 46.     (N) 077 41 14.     (W)   SCALED
 JV2943* NAVD 88 ORTHO HEIGHT -   111.958 (meters)      367.32  (feet) ADJUSTED
 JV2943  ______________________________________________________________________
 JV2943  GEOID HEIGHT    -        -33.330 (meters)                     GEOID18
 JV2943  DYNAMIC HEIGHT  -        111.894 (meters)      367.11  (feet) COMP
 JV2943  MODELED GRAVITY -    980,053.5   (mgal)                       NAVD 88
 JV2943
 JV2943  VERT ORDER      -  FIRST     CLASS II
 JV2943
 JV2943.The horizontal coordinates were scaled from a map and have
 JV2943.an estimated accuracy of +/- 6 seconds.
 JV2943
 JV2943.The orthometric height was determined by differential leveling and
 JV2943.adjusted by the NATIONAL GEODETIC SURVEY
 JV2943.in June 1991.
 JV2943
 JV2943.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2943.GEOID18 height accuracy estimate available here.
 JV2943
 JV2943.Click photographs - Photos may exist for this station.
 JV2943
 JV2943.The dynamic height is computed by dividing the NAVD 88
 JV2943.geopotential number by the normal gravity value computed on the
 JV2943.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2943.degrees latitude (g = 980.6199 gals.).
 JV2943
 JV2943.The modeled gravity was interpolated from observed gravity values.
 JV2943
 JV2943;                    North         East    Units  Estimated Accuracy
 JV2943;SPC MD       -   186,650.      340,760.      MT  (+/- 180 meters Scaled)
 JV2943
 JV2943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ684586(NAD 83)
 JV2943
 JV2943                          SUPERSEDED SURVEY CONTROL
 JV2943
 JV2943  NGVD 29 (11/26/84)  112.158  (m)          367.97   (f) ADJUSTED    1 2
 JV2943
 JV2943.Superseded values are not recommended for survey control.
 JV2943
 JV2943.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2943.See file dsdata.pdf to determine how the superseded data were derived.
 JV2943
 JV2943_MARKER: B = BOLT
 JV2943_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2943_SP_SET: CULVERT
 JV2943_MARK LOGO: BORR
 JV2943_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2943
 JV2943  HISTORY     - Date     Condition        Report By
 JV2943  HISTORY     - UNK      MONUMENTED       BORR
 JV2943  HISTORY     - 1938     GOOD             CGS
 JV2943
 JV2943                          STATION DESCRIPTION
 JV2943
 JV2943'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2943'0.4 MI S FROM GARRETT MILLS.
 JV2943'0.4 MILE SOUTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2943'STATION AT GARRETT MILLS, WASHINGTON COUNTY, 0.2 MILE SOUTH
 JV2943'OF A ROAD CROSSING, 20 FEET SOUTH OF POLE 1+24, 15 FEET EAST OF
 JV2943'THE CENTERLINE OF THE TRACK, IN THE EAST END OF A CONCRETE
 JV2943'CULVERT OVER A SMALL CREEK, AND 3 FEET BELOW THE LEVEL OF THE
 JV2943'RAILS.  A COPPER BOLT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0225 ***********************************************************************
 HV0225  DESIGNATION -  CORD AZ MK
 HV0225  PID         -  HV0225
 HV0225  STATE/COUNTY-  MD/DORCHESTER
 HV0225  COUNTRY     -  US
 HV0225  USGS QUAD   -  CAMBRIDGE (2016)
 HV0225
 HV0225                         *CURRENT SURVEY CONTROL
 HV0225  ______________________________________________________________________
 HV0225* NAD 83(1986) POSITION- 38 33 01.     (N) 076 01 11.     (W)   SCALED
 HV0225* NAVD 88 ORTHO HEIGHT -     5.572 (meters)       18.28  (feet) ADJUSTED
 HV0225  ______________________________________________________________________
 HV0225  GEOID HEIGHT    -        -35.162 (meters)                     GEOID18
 HV0225  DYNAMIC HEIGHT  -          5.569 (meters)       18.27  (feet) COMP
 HV0225  MODELED GRAVITY -    980,016.1   (mgal)                       NAVD 88
 HV0225
 HV0225  VERT ORDER      -  FIRST     CLASS II
 HV0225
 HV0225.The horizontal coordinates were scaled from a map and have
 HV0225.an estimated accuracy of +/- 6 seconds.
 HV0225
 HV0225.The orthometric height was determined by differential leveling and
 HV0225.adjusted by the NATIONAL GEODETIC SURVEY
 HV0225.in June 1991.
 HV0225
 HV0225.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0225.GEOID18 height accuracy estimate available here.
 HV0225
 HV0225.Click photographs - Photos may exist for this station.
 HV0225
 HV0225.The dynamic height is computed by dividing the NAVD 88
 HV0225.geopotential number by the normal gravity value computed on the
 HV0225.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0225.degrees latitude (g = 980.6199 gals.).
 HV0225
 HV0225.The modeled gravity was interpolated from observed gravity values.
 HV0225
 HV0225;                    North         East    Units  Estimated Accuracy
 HV0225;SPC MD       -    98,540.      485,450.      MT  (+/- 180 meters Scaled)
 HV0225
 HV0225_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH111673(NAD 83)
 HV0225
 HV0225                          SUPERSEDED SURVEY CONTROL
 HV0225
 HV0225  NGVD 29 (11/26/84)    5.807  (m)           19.05   (f) ADJUSTED    1 2
 HV0225
 HV0225.Superseded values are not recommended for survey control.
 HV0225
 HV0225.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0225.See file dsdata.pdf to determine how the superseded data were derived.
 HV0225
 HV0225_MARKER: DD = SURVEY DISK
 HV0225_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0225_STAMPING: CORD AZ 1960
 HV0225_MARK LOGO: MDBCSM
 HV0225_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0225+STABILITY: SURFACE MOTION
 HV0225
 HV0225  HISTORY     - Date     Condition        Report By
 HV0225  HISTORY     - 1960     MONUMENTED       MDBCSM
 HV0225  HISTORY     - 1971     GOOD             NGS
 HV0225  HISTORY     - 20021127 POOR             USPSQD
 HV0225  HISTORY     - 20041124 POOR             USPSQD
 HV0225
 HV0225                          STATION DESCRIPTION
 HV0225
 HV0225'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0225'3.6 MI E FROM CAMBRIDGE.
 HV0225'ABOUT 3.55 MILES EAST ALONG U.S. HIGHWAY 50 FROM THE SOUTH END
 HV0225'OF THE HIGHWAY BRIDGE OVER THE CHOPTANK RIVER AT CAMBRIDGE, AT
 HV0225'THE JUNCTION OF STATE HIGHWAY 397, ON A HIGHWAY ISLAND, 20.4
 HV0225'FEET SOUTH OF THE CENTER LINE OF THE NEAR LANE OF THE U.S.
 HV0225'HIGHWAY, 21.5 FEET WEST OF THE CENTER LINE OF THE STATE HIGHWAY,
 HV0225'46 1/2 FEET EAST OF POWER LINE POLE NO. 159, ABOUT LEVEL WITH
 HV0225'THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 HV0225'GROUND.
 HV0225
 HV0225                          STATION RECOVERY (2002)
 HV0225
 HV0225'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0225'CONCRETE MONUMENT APPEARS TO BE DISPLACED BY ROW MAINTENANCE EQUIPMENT
 HV0225'AND IS CHIPPED AND THE DISK IS SCARRED AND CUT.
 HV0225
 HV0225                          STATION RECOVERY (2004)
 HV0225
 HV0225'RECOVERY NOTE BY US POWER SQUADRON 2004 (JKW)
 HV0225'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3146 ***********************************************************************
 DI3146  DESIGNATION -  CORDOVA 1
 DI3146  PID         -  DI3146
 DI3146  STATE/COUNTY-  MD/TALBOT
 DI3146  COUNTRY     -  US
 DI3146  USGS QUAD   -  EASTON (2016)
 DI3146
 DI3146                         *CURRENT SURVEY CONTROL
 DI3146  ______________________________________________________________________
 DI3146* NAD 83(2011) POSITION- 38 51 47.40378(N) 076 01 01.70546(W)   ADJUSTED
 DI3146* NAD 83(2011) ELLIP HT-   -11.946 (meters)        (06/27/12)   ADJUSTED
 DI3146* NAD 83(2011) EPOCH   -  2010.00
 DI3146* NAVD 88 ORTHO HEIGHT -    22.6   (meters)       74.    (feet) GPS OBS
 DI3146  ______________________________________________________________________
 DI3146  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3146  GEOID HEIGHT    -        -34.538 (meters)                     GEOID03
 DI3146  GEOID HEIGHT    -        -34.568 (meters)                     GEOID18
 DI3146  NAD 83(2011) X  -  1,201,601.039 (meters)                     COMP
 DI3146  NAD 83(2011) Y  - -4,825,507.895 (meters)                     COMP
 DI3146  NAD 83(2011) Z  -  3,980,493.025 (meters)                     COMP
 DI3146  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 DI3146
 DI3146  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3146  Standards:
 DI3146         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3146            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3146  -------------------------------------------------------------------
 DI3146  NETWORK    0.64   0.88           0.28   0.24   0.45      0.06093560
 DI3146  -------------------------------------------------------------------
 DI3146  Click here for local accuracies and other accuracy information.
 DI3146
 DI3146.The horizontal coordinates were established by GPS observations
 DI3146.and adjusted by the National Geodetic Survey in June 2012.
 DI3146
 DI3146.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3146.been affixed to the stable North American tectonic plate. See 
 DI3146.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3146
 DI3146.The horizontal coordinates are valid at the epoch date displayed above
 DI3146.which is a decimal equivalence of Year/Month/Day.
 DI3146
 DI3146.The orthometric height was determined by GPS observations and a
 DI3146.high-resolution geoid model.
 DI3146
 DI3146.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3146.GEOID18 height accuracy estimate available here.
 DI3146
 DI3146.Click photographs - Photos may exist for this station.
 DI3146
 DI3146.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3146
 DI3146.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3146
 DI3146.The ellipsoidal height was determined by GPS observations
 DI3146.and is referenced to NAD 83.
 DI3146
 DI3146. The following values were computed from the NAD 83(2011) position.
 DI3146
 DI3146;                    North         East     Units Scale Factor Converg.
 DI3146;SPC MD       -   133,275.829   485,299.412   MT  0.99994987   +0 37 00.8
 DI3146;SPC MD       -   437,255.78  1,592,186.49   sFT  0.99994987   +0 37 00.8
 DI3146;UTM  18      - 4,302,083.853   411,753.644   MT  0.99969589   -0 38 17.7
 DI3146
 DI3146!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3146!SPC MD       -   1.00000187  x   0.99994987  =   0.99995174
 DI3146!UTM  18      -   1.00000187  x   0.99969589  =   0.99969776
 DI3146
 DI3146_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1175302083(NAD 83)
 DI3146
 DI3146|---------------------------------------------------------------------|
 DI3146| PID    Reference Object                     Distance      Geod. Az  |
 DI3146|                                                           dddmmss.s |
 DI3146| DI3147 CORDOVA 2                           357.781 METERS 00803     |
 DI3146|---------------------------------------------------------------------|
 DI3146
 DI3146                          SUPERSEDED SURVEY CONTROL
 DI3146
 DI3146  NAD 83(1991)-  38 51 47.40385(N)    076 01 01.70634(W) AD(       ) 1
 DI3146  ELLIP H (01/05/07)  -11.893  (m)                       GP(       ) 4 2
 DI3146
 DI3146.Superseded values are not recommended for survey control.
 DI3146
 DI3146.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3146.See file dsdata.pdf to determine how the superseded data were derived.
 DI3146
 DI3146_MARKER: DD = SURVEY DISK
 DI3146_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3146_STAMPING: CORDOVA 1
 DI3146_PROJECTION: FLUSH
 DI3146_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3146_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3146+STABILITY: SURFACE MOTION
 DI3146_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3146+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3146
 DI3146  HISTORY     - Date     Condition        Report By
 DI3146  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3146
 DI3146                          STATION DESCRIPTION
 DI3146
 DI3146'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3146'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR CORDOVA,
 DI3146'MARYLAND.  IT IS ABOUT  6.6 MI (10.6 KM) NORTHEAST OF EASTON,
 DI3146'MARYLAND, ABOUT 21.0 MI (33.8 KM) NORTHEAST OF   CAMBRIDGE, MARYLAND
 DI3146'AND ABOUT 6.2 MI (10.0 KM) SOUTHEAST OF WYE MILLS, MARYLAND.
 DI3146'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 404 (QUEEN
 DI3146'ANNE HIGHWAY)  PROCEED SOUTHEAST ON SR 404 FOR 5.9 MI (9.5 KM) TO
 DI3146'INTERSECTION WITH SR 309 (CORDOVA  ROAD).    TURN RIGHT AND PROCEED
 DI3146'4.6 MI (7.4 KM) SOUTHWEST TO INTERSECTION WITH OLD  CORDOVA ROAD.
 DI3146'TURN RIGHT AND PROCEED 1.1 MI (1.8 KM) TO THE STATION ON THE RIGHT.
 DI3146'STATION IS 3.2 FT (1.0 M) SOUTHEAST OF THE SOUTHEAST EDGE OF CORDOVA
 DI3146'ROAD, 65.0 FT (19.8 M)  SOUTHWEST OF SOUTHWEST CORNER OF GRAVEL DRIVE
 DI3146'LEADING TO HOUSE 11458  AT AT  INTERSECTION AT CORDOVA ROAD AND 36.0
 DI3146'FT (11.0 M) SOUTHWEST OF END OF WHITE WOODEN  FENCE AND HEDGEROW.  A 3
 DI3146'IN BRASS DISK STAMPED CORDAOVA 1 SET IN THE TOP OF A 1 FT  (0.3 M)
 DI3146'CONCRETE MONUMENT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3147 ***********************************************************************
 DI3147  DESIGNATION -  CORDOVA 2
 DI3147  PID         -  DI3147
 DI3147  STATE/COUNTY-  MD/TALBOT
 DI3147  COUNTRY     -  US
 DI3147  USGS QUAD   -  EASTON (2016)
 DI3147
 DI3147                         *CURRENT SURVEY CONTROL
 DI3147  ______________________________________________________________________
 DI3147* NAD 83(2011) POSITION- 38 51 58.89192(N) 076 00 59.62828(W)   ADJUSTED
 DI3147* NAD 83(2011) ELLIP HT-   -12.569 (meters)        (06/27/12)   ADJUSTED
 DI3147* NAD 83(2011) EPOCH   -  2010.00
 DI3147* NAVD 88 ORTHO HEIGHT -    22.0   (meters)       72.    (feet) GPS OBS
 DI3147  ______________________________________________________________________
 DI3147  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3147  GEOID HEIGHT    -        -34.531 (meters)                     GEOID03
 DI3147  GEOID HEIGHT    -        -34.560 (meters)                     GEOID18
 DI3147  NAD 83(2011) X  -  1,201,595.802 (meters)                     COMP
 DI3147  NAD 83(2011) Y  - -4,825,279.620 (meters)                     COMP
 DI3147  NAD 83(2011) Z  -  3,980,768.470 (meters)                     COMP
 DI3147  LAPLACE CORR    -         -3.39  (seconds)                    DEFLEC18
 DI3147
 DI3147  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3147  Standards:
 DI3147         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3147            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3147  -------------------------------------------------------------------
 DI3147  NETWORK    0.64   0.88           0.28   0.24   0.45      0.06056072
 DI3147  -------------------------------------------------------------------
 DI3147  Click here for local accuracies and other accuracy information.
 DI3147
 DI3147.The horizontal coordinates were established by GPS observations
 DI3147.and adjusted by the National Geodetic Survey in June 2012.
 DI3147
 DI3147.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3147.been affixed to the stable North American tectonic plate. See 
 DI3147.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3147
 DI3147.The horizontal coordinates are valid at the epoch date displayed above
 DI3147.which is a decimal equivalence of Year/Month/Day.
 DI3147
 DI3147.The orthometric height was determined by GPS observations and a
 DI3147.high-resolution geoid model.
 DI3147
 DI3147.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3147.GEOID18 height accuracy estimate available here.
 DI3147
 DI3147.Click photographs - Photos may exist for this station.
 DI3147
 DI3147.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3147
 DI3147.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3147
 DI3147.The ellipsoidal height was determined by GPS observations
 DI3147.and is referenced to NAD 83.
 DI3147
 DI3147. The following values were computed from the NAD 83(2011) position.
 DI3147
 DI3147;                    North         East     Units Scale Factor Converg.
 DI3147;SPC MD       -   133,630.589   485,345.670   MT  0.99994986   +0 37 02.1
 DI3147;SPC MD       -   438,419.69  1,592,338.25   sFT  0.99994986   +0 37 02.1
 DI3147;UTM  18      - 4,302,437.424   411,807.648   MT  0.99969577   -0 38 16.6
 DI3147
 DI3147!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3147!SPC MD       -   1.00000197  x   0.99994986  =   0.99995183
 DI3147!UTM  18      -   1.00000197  x   0.99969577  =   0.99969774
 DI3147
 DI3147_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1180702437(NAD 83)
 DI3147
 DI3147|---------------------------------------------------------------------|
 DI3147| PID    Reference Object                     Distance      Geod. Az  |
 DI3147|                                                           dddmmss.s |
 DI3147| DI3146 CORDOVA 1                           357.781 METERS 18803     |
 DI3147|---------------------------------------------------------------------|
 DI3147
 DI3147                          SUPERSEDED SURVEY CONTROL
 DI3147
 DI3147  NAD 83(1991)-  38 51 58.89199(N)    076 00 59.62917(W) AD(       ) 1
 DI3147  ELLIP H (01/05/07)  -12.515  (m)                       GP(       ) 4 2
 DI3147
 DI3147.Superseded values are not recommended for survey control.
 DI3147
 DI3147.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3147.See file dsdata.pdf to determine how the superseded data were derived.
 DI3147
 DI3147_MARKER: DD = SURVEY DISK
 DI3147_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3147_STAMPING: CORDOVA 2
 DI3147_PROJECTION: FLUSH
 DI3147_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3147_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3147+STABILITY: SURFACE MOTION
 DI3147_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3147+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3147
 DI3147  HISTORY     - Date     Condition        Report By
 DI3147  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3147
 DI3147                          STATION DESCRIPTION
 DI3147
 DI3147'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3147'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR CORDOVA,
 DI3147'MARYLAND.  IT IS  ABOUT 6.7 MI (10.8 KM) NORTHEAST OF EASTON,
 DI3147'MARYLAND, ABOUT 21.1 MI (34.0 KM) NORTHEAST OF  CAMBRIDGE, MARYLAND
 DI3147'AND ABOUT 6.1 MI (9.8 KM) SOUTHEAST OF WYE MILLS, MARYLAND.
 DI3147'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 404 (QUEEN
 DI3147'ANNE HIGHWAY)  PROCEED SOUTHEAST ON SR 404 FOR 5.9 MI (9.5 KM) TO
 DI3147'INTERSECTION WITH SR 309 (CORDOVA  ROAD).    TURN RIGHT AND PROCEED
 DI3147'4.6 MI (7.4 KM) SOUTHWEST TO INTERSECTION WITH OLD  CORDOVA ROAD.
 DI3147'TURN RIGHT AND PROCEED 1.0 MI (1.6 KM) TO INTERSECTION WITH BLADES
 DI3147'ROAD.   TURN RIGHT AND PROCEED 0.2 MI (0.3 KM) TO THE STATION ON THE
 DI3147'RIGHT.
 DI3147'STATION IS 8.0 FT (1.0 M) SOUTHEAST OF THE SOUTHEAST EDGE OF BLADES
 DI3147'ROAD AND 154.0 FT (11.0  M) NORTHEAST OF TWIN 16 INCH CEDARS.  A 3 IN
 DI3147'BRASS DISK STAMPED CORDAOVA 2 SET IN THE TOP  OF A 1 FT (0.3 M)
 DI3147'CONCRETE MONUMENT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6194 ***********************************************************************
 HV6194  DESIGNATION -  CORN
 HV6194  PID         -  HV6194
 HV6194  STATE/COUNTY-  MD/QUEEN ANNES
 HV6194  COUNTRY     -  US
 HV6194  USGS QUAD   -  KENT ISLAND (2016)
 HV6194
 HV6194                         *CURRENT SURVEY CONTROL
 HV6194  ______________________________________________________________________
 HV6194* NAD 83(1991) POSITION- 38 54 52.69917(N) 076 18 06.02910(W)   ADJUSTED
 HV6194* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6194  ______________________________________________________________________
 HV6194  GEOID HEIGHT    -        -33.789 (meters)                     GEOID18
 HV6194  LAPLACE CORR    -         -4.28  (seconds)                    DEFLEC18
 HV6194  HORZ ORDER      -  THIRD
 HV6194
 HV6194.The horizontal coordinates were established by classical geodetic methods
 HV6194.and adjusted by the National Geodetic Survey in January 1992.
 HV6194
 HV6194.The orthometric height was scaled from a topographic map.
 HV6194
 HV6194.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6194.GEOID18 height accuracy estimate available here.
 HV6194
 HV6194.Click photographs - Photos may exist for this station.
 HV6194
 HV6194.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6194
 HV6194. The following values were computed from the NAD 83(1991) position.
 HV6194
 HV6194;                    North         East     Units Scale Factor Converg.
 HV6194;SPC MD       -   138,761.954   460,562.410   MT  0.99995008   +0 26 17.9
 HV6194;SPC MD       -   455,254.84  1,511,028.51   sFT  0.99995008   +0 26 17.9
 HV6194;UTM  18      - 4,308,109.338   387,148.324   MT  0.99975682   -0 49 03.9
 HV6194
 HV6194!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6194!SPC MD       -   1.00000518  x   0.99995008  =   0.99995526
 HV6194!UTM  18      -   1.00000518  x   0.99975682  =   0.99976200
 HV6194
 HV6194:                Primary Azimuth Mark                     Grid Az
 HV6194:SPC MD       -  COXES CREEK                              255 27 48.1
 HV6194:UTM  18      -  COXES CREEK                              256 43 09.9
 HV6194
 HV6194_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8714808109(NAD 83)
 HV6194
 HV6194|---------------------------------------------------------------------|
 HV6194| PID    Reference Object                     Distance      Geod. Az  |
 HV6194|                                                           dddmmss.s |
 HV6194| HV6210 COXES CREEK                         APPROX. 1.4 KM 2555406.0 |
 HV6194| HV6159 TED                                 APPROX. 1.2 KM 3301506.2 |
 HV6194|---------------------------------------------------------------------|
 HV6194
 HV6194                          SUPERSEDED SURVEY CONTROL
 HV6194
 HV6194  NAD 83(1986)-  38 54 52.69514(N)    076 18 06.04166(W) AD(       ) 3
 HV6194  NAD 27      -  38 54 52.27500(N)    076 18 07.23500(W) AD(       ) 3
 HV6194  USSD        -  38 54 52.67600(N)    076 18 07.02400(W) AD(       ) 3
 HV6194
 HV6194.Superseded values are not recommended for survey control.
 HV6194
 HV6194.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6194.See file dsdata.pdf to determine how the superseded data were derived.
 HV6194
 HV6194_MARKER: V = STONE MONUMENT
 HV6194_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6194_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6194_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6194
 HV6194  HISTORY     - Date     Condition        Report By
 HV6194  HISTORY     - 1899     MONUMENTED       CGS
 HV6194  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6194
 HV6194                          STATION DESCRIPTION
 HV6194
 HV6194'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (PAW)
 HV6194'STATION IS ON THE EASTERN SHORE OF COX CREEK (EASTERN BAY), AT THE
 HV6194'EDGE OF A CORNFIELD AND ABOUT 50 FEET INSIDE THE EDGE OF A HIGH
 HV6194'BLUFF, AND ABOUT 1/4 MILE ABOVE END OF POINT ON OPPOSITE OR
 HV6194'WESTERN SIDE OF ENTRANCE TO CREEK.  STATION MARKED BY A BOTTLE
 HV6194'PLACED 31 INCHES BELOW SURFACE OF GROUND.  ABOVE THE BOTTLE IS
 HV6194'PLACED A GRANITE POST 33 INCHES LONG AND 12 INCHES SQUARE IN
 HV6194'THE ROUGH.  THE TOP OF THE POST IS DRESSED TO A 6-INCH CUBE AND
 HV6194'IS MARKED WITH THE SQUARE CROSS LINES AND THE LETTERS U.S.
 HV6194
 HV6194                          STATION RECOVERY (1940)
 HV6194
 HV6194'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6194'STATION MARK SEARCHED FOR BUT NOT FOUND.  AREA SHOWS EVIDENCE OF
 HV6194'CONSIDERABLE EROSION AND STATION MARK MAY HAVE BEEN WASHED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5196 ***********************************************************************
 JV5196  DESIGNATION -  CORN
 JV5196  PID         -  JV5196
 JV5196  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5196  COUNTRY     -  US
 JV5196  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5196
 JV5196                         *CURRENT SURVEY CONTROL
 JV5196  ______________________________________________________________________
 JV5196* NAD 83(1991) POSITION- 39 01 28.31861(N) 076 23 54.06945(W)   ADJUSTED
 JV5196* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5196  ______________________________________________________________________
 JV5196  GEOID HEIGHT    -        -33.410 (meters)                     GEOID18
 JV5196  LAPLACE CORR    -         -2.15  (seconds)                    DEFLEC18
 JV5196  HORZ ORDER      -  THIRD
 JV5196
 JV5196.The horizontal coordinates were established by classical geodetic methods
 JV5196.and adjusted by the National Geodetic Survey in January 1992.
 JV5196
 JV5196.The orthometric height was scaled from a topographic map.
 JV5196
 JV5196.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5196.GEOID18 height accuracy estimate available here.
 JV5196
 JV5196.Click photographs - Photos may exist for this station.
 JV5196
 JV5196.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5196
 JV5196. The following values were computed from the NAD 83(1991) position.
 JV5196
 JV5196;                    North         East     Units Scale Factor Converg.
 JV5196;SPC MD       -   150,901.301   452,097.731   MT  0.99995321   +0 22 39.4
 JV5196;SPC MD       -   495,082.02  1,483,257.31   sFT  0.99995321   +0 22 39.4
 JV5196;UTM  18      - 4,320,429.213   378,953.503   MT  0.99978042   -0 52 50.1
 JV5196
 JV5196!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5196!SPC MD       -   1.00000528  x   0.99995321  =   0.99995849
 JV5196!UTM  18      -   1.00000528  x   0.99978042  =   0.99978570
 JV5196
 JV5196:                Primary Azimuth Mark                     Grid Az
 JV5196:SPC MD       -  PEACH HILL                               338 49 18.6
 JV5196:UTM  18      -  PEACH HILL                               340 04 48.1
 JV5196
 JV5196_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7895320429(NAD 83)
 JV5196
 JV5196|---------------------------------------------------------------------|
 JV5196| PID    Reference Object                     Distance      Geod. Az  |
 JV5196|                                                           dddmmss.s |
 JV5196| CB1110 CORN RM                               9.425 METERS 13803     |
 JV5196| JV5174 PEACH HILL                          APPROX. 6.3 KM 3391158.0 |
 JV5196| JV5200 BALTO                               APPROX. 3.9 KM 3590016.4 |
 JV5196|---------------------------------------------------------------------|
 JV5196
 JV5196                          SUPERSEDED SURVEY CONTROL
 JV5196
 JV5196  NAD 83(1986)-  39 01 28.31427(N)    076 23 54.08066(W) AD(       ) 3
 JV5196  NAD 27      -  39 01 27.91500(N)    076 23 55.20800(W) AD(       ) 3
 JV5196  USSD        -  39 01 28.27900(N)    076 23 55.07900(W) AD(       ) 3
 JV5196
 JV5196.Superseded values are not recommended for survey control.
 JV5196
 JV5196.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5196.See file dsdata.pdf to determine how the superseded data were derived.
 JV5196
 JV5196
 JV5196  HISTORY     - Date     Condition        Report By
 JV5196  HISTORY     - 1906     MONUMENTED       MDSFC
 JV5196  HISTORY     - 1908     SEE DESCRIPTION  MDSFC
 JV5196  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5196
 JV5196                          STATION DESCRIPTION
 JV5196
 JV5196'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908
 JV5196'ON THE W SHORE OF CHESAPEAKE BAY, ABOUT 1 MILE NW OF SANDY POINT
 JV5196'LIGHT, IN A CULTIVATED FIELD, ABOUT 18 FEET BACK FROM THE EDGE OF
 JV5196'A BLUFF 15 FEET HIGH.  STATION IS MARKED BY A NAIL IN A STUB SET
 JV5196'FLUSH WITH THE GROUND.  THE REFERENCE MARK IS CENTER OF TRIANGLE
 JV5196'ON STANDARD CEMENT MONUMENT OF THE MARYLAND SHELL FISH SURVEY, AN
 JV5196'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 JV5196'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 JV5196'TOP OF POST.  IT IS 9.425 METERS (30.92 FEET) FROM STATION IN
 JV5196'BEARING S 58 DEG 3 MIN W.  OTHER DISTANCES AND BEARINGS ARE AS
 JV5196'FOLLOWS--LONE 2-INCH OAK TREE, 1/4 MILE, S 28 DEG 26 MIN W.  E
 JV5196'PEAK OF RED ROOF OF BARN OR HOUSE, 3/4 MILE, S 42 DEG 20 MIN W.
 JV5196
 JV5196                          STATION RECOVERY (1933)
 JV5196
 JV5196'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5196'STATION WAS SET 18 FEET BACK OF A 15-FOOT BLUFF AND MARKED BY A
 JV5196'NAIL IN A WOOD HUB.  THE BANK AT THIS POINT HAS BEEN WASHED FROM
 JV5196'50 TO 100 FEET, ACCORDING TO LOCAL RESIDENTS, DESTROYING STATION
 JV5196'AND REFERENCE MARKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3580 ***********************************************************************
 JU3580  DESIGNATION -  CORN 1898
 JU3580  PID         -  JU3580
 JU3580  STATE/COUNTY-  MD/CECIL
 JU3580  COUNTRY     -  US
 JU3580  USGS QUAD   -  NORTH EAST (2016)
 JU3580
 JU3580                         *CURRENT SURVEY CONTROL
 JU3580  ______________________________________________________________________
 JU3580* NAD 83(1991) POSITION- 39 29 59.24752(N) 075 56 05.08687(W)   ADJUSTED
 JU3580* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 JU3580  ______________________________________________________________________
 JU3580  GEOID HEIGHT    -        -33.316 (meters)                     GEOID18
 JU3580  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 JU3580  HORZ ORDER      -  THIRD
 JU3580
 JU3580.The horizontal coordinates were established by classical geodetic methods
 JU3580.and adjusted by the National Geodetic Survey in January 1992.
 JU3580
 JU3580.The orthometric height was scaled from a topographic map.
 JU3580
 JU3580.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3580.GEOID18 height accuracy estimate available here.
 JU3580
 JU3580.Click photographs - Photos may exist for this station.
 JU3580
 JU3580.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3580
 JU3580. The following values were computed from the NAD 83(1991) position.
 JU3580
 JU3580;                    North         East     Units Scale Factor Converg.
 JU3580;SPC MD       -   204,026.301   491,625.136   MT  1.00000909   +0 40 06.9
 JU3580;SPC MD       -   669,376.29  1,612,940.13   sFT  1.00000909   +0 40 06.9
 JU3580;UTM  18      - 4,372,658.336   419,630.501   MT  0.99967953   -0 35 40.6
 JU3580
 JU3580!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3580!SPC MD       -   1.00000338  x   1.00000909  =   1.00001247
 JU3580!UTM  18      -   1.00000338  x   0.99967953  =   0.99968291
 JU3580
 JU3580:                Primary Azimuth Mark                     Grid Az
 JU3580:SPC MD       -  FORD 2 1898                              198 42 36.0
 JU3580:UTM  18      -  FORD 2 1898                              199 58 23.5
 JU3580
 JU3580_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1963072658(NAD 83)
 JU3580
 JU3580|---------------------------------------------------------------------|
 JU3580| PID    Reference Object                     Distance      Geod. Az  |
 JU3580|                                                           dddmmss.s |
 JU3580| JU3604 FORD 2 1898                         APPROX. 3.0 KM 1992242.9 |
 JU3580|---------------------------------------------------------------------|
 JU3580
 JU3580                          SUPERSEDED SURVEY CONTROL
 JU3580
 JU3580  NAD 83(1986)-  39 29 59.23940(N)    075 56 05.09249(W) AD(       ) 3
 JU3580  NAD 27      -  39 29 58.84500(N)    075 56 06.30100(W) AD(       ) 3
 JU3580  USSD        -  39 29 59.22500(N)    075 56 06.13300(W) AD(       ) 3
 JU3580
 JU3580.Superseded values are not recommended for survey control.
 JU3580
 JU3580.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3580.See file dsdata.pdf to determine how the superseded data were derived.
 JU3580
 JU3580_MARKER: 61 = POLE
 JU3580
 JU3580  HISTORY     - Date     Condition        Report By
 JU3580  HISTORY     - 1898     FIRST OBSERVED   CGS
 JU3580  HISTORY     - 1902     GOOD             CGS
 JU3580
 JU3580                          STATION DESCRIPTION
 JU3580
 JU3580'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 JU3580'ON W SIDE OF ELK RIVER, ABOUT 2/3 MILE ABOVE BOHEMIA RIVER, IN A
 JU3580'CORNFIELD ON A HIGH BANK, ON LAND OCCUPIED BY A MR. FUTY.  MARKED
 JU3580'BY A 3- BY 3-INCH POLE SET IN A BOX 3 FEET DEEP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6824 ***********************************************************************
 HV6824  DESIGNATION -  CORN MSFC 1908
 HV6824  PID         -  HV6824
 HV6824  STATE/COUNTY-  MD/ST MARYS
 HV6824  COUNTRY     -  US
 HV6824  USGS QUAD   -  LEONARDTOWN (2016)
 HV6824
 HV6824                         *CURRENT SURVEY CONTROL
 HV6824  ______________________________________________________________________
 HV6824* NAD 83(1993) POSITION- 38 16 35.04438(N) 076 37 42.45998(W)   ADJUSTED
 HV6824* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6824  ______________________________________________________________________
 HV6824  GEOID HEIGHT    -        -33.925 (meters)                     GEOID18
 HV6824  LAPLACE CORR    -         -5.35  (seconds)                    DEFLEC18
 HV6824  HORZ ORDER      -  THIRD
 HV6824
 HV6824.The horizontal coordinates were established by classical geodetic methods
 HV6824.and adjusted by the National Geodetic Survey in November 1994.
 HV6824
 HV6824.The orthometric height was scaled from a topographic map.
 HV6824
 HV6824.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6824.GEOID18 height accuracy estimate available here.
 HV6824
 HV6824.Click photographs - Photos may exist for this station.
 HV6824
 HV6824.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6824
 HV6824. The following values were computed from the NAD 83(1993) position.
 HV6824
 HV6824;                    North         East     Units Scale Factor Converg.
 HV6824;SPC MD       -    67,749.496   432,510.359   MT  1.00000419   +0 13 59.5
 HV6824;SPC MD       -   222,274.80  1,418,994.40   sFT  1.00000419   +0 13 59.5
 HV6824;SPC VA N     - 2,069,348.315 3,663,746.065   MT  0.99996600   +1 10 05.0
 HV6824;SPC VA N     - 6,789,186.93 12,020,140.21   sFT  0.99996600   +1 10 05.0
 HV6824;UTM  18      - 4,237,737.141   357,559.253   MT  0.99984988   -1 00 32.1
 HV6824
 HV6824!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6824!SPC MD       -   1.00000538  x   1.00000419  =   1.00000957
 HV6824!SPC VA N     -   1.00000538  x   0.99996600  =   0.99997138
 HV6824!UTM  18      -   1.00000538  x   0.99984988  =   0.99985525
 HV6824
 HV6824:                Primary Azimuth Mark                     Grid Az
 HV6824:SPC MD       -  CEDAR MSFC 1908                          209 32 20.5
 HV6824:SPC VA N     -  CEDAR MSFC 1908                          208 36 15.0
 HV6824:UTM  18      -  CEDAR MSFC 1908                          210 46 52.1
 HV6824
 HV6824_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5755937737(NAD 83)
 HV6824
 HV6824|---------------------------------------------------------------------|
 HV6824| PID    Reference Object                     Distance      Geod. Az  |
 HV6824|                                                           dddmmss.s |
 HV6824| HV6815 CEDAR MSFC 1908                     425.532 METERS 2094620.0 |
 HV6824| HV6825 BUZZARD MSFC 1908                   477.527 METERS 3183741.2 |
 HV6824|---------------------------------------------------------------------|
 HV6824
 HV6824                          SUPERSEDED SURVEY CONTROL
 HV6824
 HV6824  NAD 83(1991)-  38 16 35.04358(N)    076 37 42.46476(W) AD(       ) 3
 HV6824  NAD 83(1986)-  38 16 35.04434(N)    076 37 42.47649(W) AD(       ) 3
 HV6824  NAD 27      -  38 16 34.56800(N)    076 37 43.59700(W) AD(       ) 3
 HV6824  USSD        -  38 16 35.18200(N)    076 37 43.46200(W) AD(       ) 3
 HV6824
 HV6824.Superseded values are not recommended for survey control.
 HV6824
 HV6824.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6824.See file dsdata.pdf to determine how the superseded data were derived.
 HV6824
 HV6824_MARKER: H = DRILL HOLE
 HV6824_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6824_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6824+STABILITY: SURFACE MOTION
 HV6824
 HV6824  HISTORY     - Date     Condition        Report By
 HV6824  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6824  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6824
 HV6824                          STATION DESCRIPTION
 HV6824
 HV6824'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6824'STATION IS ON THE EASTERN SHORE OF UPPER BRETONS BAY, ON SECOND
 HV6824'PROMINENT POINT N OF MOULDY CREEK, ABOUT 7/8 MILE SE OF
 HV6824'LEONARDTOWN WHARF, AND 1/2 MILE NE OF ENTRANCE TO MOULDY CREEK.
 HV6824'STATION IS INSIDE OF A RAIL FENCE AT EDGE OF A CULTIVATED FIELD,
 HV6824'ABOUT 3 FEET ABOVE HIGH WATER, 10 YARDS FROM SHORE, AND 1/4 MILE
 HV6824'NW OF 1 1/2-STORY FARMHOUSE.
 HV6824'
 HV6824'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6824'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6824'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6824'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6824'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6824'AS FOLLOWS--CHIMNEY OF SMALL 2-STORY HOUSE, 1/2 MILE, S 82 DEG 27
 HV6824'MIN W.  E GABLE OF DUKE HOUSE, 1/2 MILE, N 58 DEG 43 MIN W.  S
 HV6824'GABLE OF WHARF HOUSE, 7/8 MILE, N 39 DEG 33 MIN W.  SW CHIMNEY OF
 HV6824'KEY HOUSE, 7/8 MILE, N 21 DEG 40 MIN W.  S GABLE OF FOXWELL HOUSE,
 HV6824'1/2 MILE, N 13 DEG 45 MIN W.  CROSS ON CATHOLIC ACADEMY, 1 1/2
 HV6824'MILES, N 7 DEG 23 MIN W.  S GABLE OF HOUSE ON HILL, 3/4 MILE, N 24
 HV6824'DEG 45 MIN E.  SMOKESTACK OF SAWMILL, 1 MILE N 45 DEG 26 MIN E.  W
 HV6824'CHIMNEY OF SMALL 2-STORY HOUSE, 1/4 MILE, N 68 DEG 12 MIN E.  NEAR
 HV6824'CHIMNEY OF OLD FARMHOUSE, 1/4 MILE, S 40 DEG 13 MIN E.
 HV6824
 HV6824                          STATION RECOVERY (1958)
 HV6824
 HV6824'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6824'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE HOUR
 HV6824'WITHOUT RESULTS.  THE LOW BANK ON WHICH THIS STATION WAS LOCATED
 HV6824'HAS APPARENTLY ERODED GREATLY, UNDERCUTTING THE MONUMENT.  THE
 HV6824'STATION SHOULD BE LISTED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5043 ***********************************************************************
 JV5043  DESIGNATION -  CORNELL
 JV5043  PID         -  JV5043
 JV5043  STATE/COUNTY-  MD/QUEEN ANNES
 JV5043  COUNTRY     -  US
 JV5043  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5043
 JV5043                         *CURRENT SURVEY CONTROL
 JV5043  ______________________________________________________________________
 JV5043* NAD 83(1991) POSITION- 39 03 29.06426(N) 076 10 32.00302(W)   ADJUSTED
 JV5043* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5043  ______________________________________________________________________
 JV5043  GEOID HEIGHT    -        -33.587 (meters)                     GEOID18
 JV5043  LAPLACE CORR    -         -2.58  (seconds)                    DEFLEC18
 JV5043  HORZ ORDER      -  SECOND
 JV5043
 JV5043.The horizontal coordinates were established by classical geodetic methods
 JV5043.and adjusted by the National Geodetic Survey in January 1992.
 JV5043
 JV5043.The orthometric height was scaled from a topographic map.
 JV5043
 JV5043.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5043.GEOID18 height accuracy estimate available here.
 JV5043
 JV5043.Click photographs - Photos may exist for this station.
 JV5043
 JV5043.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5043
 JV5043. The following values were computed from the NAD 83(1991) position.
 JV5043
 JV5043;                    North         East     Units Scale Factor Converg.
 JV5043;SPC MD       -   154,775.204   471,355.978   MT  0.99995489   +0 31 02.8
 JV5043;SPC MD       -   507,791.65  1,546,440.40   sFT  0.99995489   +0 31 02.8
 JV5043;UTM  18      - 4,323,878.606   398,288.287   MT  0.99972738   -0 44 26.8
 JV5043
 JV5043!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5043!SPC MD       -   1.00000515  x   0.99995489  =   0.99996004
 JV5043!UTM  18      -   1.00000515  x   0.99972738  =   0.99973253
 JV5043
 JV5043:                Primary Azimuth Mark                     Grid Az
 JV5043:SPC MD       -  ORCHARD PT FARMS WINDMILL                008 23 34.3
 JV5043:UTM  18      -  ORCHARD PT FARMS WINDMILL                009 39 03.9
 JV5043
 JV5043_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9828823878(NAD 83)
 JV5043
 JV5043|---------------------------------------------------------------------|
 JV5043| PID    Reference Object                     Distance      Geod. Az  |
 JV5043|                                                           dddmmss.s |
 JV5043| JV5024 ORCHARD PT FARMS WINDMILL           APPROX. 6.8 KM 0085437.1 |
 JV5043| JV5028 PIONEER PT FARMS E BLACK TK         APPROX. 3.7 KM 0703911.1 |
 JV5043| JV5034 PIONEER PT FARMS W BLACK TK         APPROX. 2.0 KM 0811405.1 |
 JV5043| CB1111 CORNELL RM 1                         29.208 METERS 15213     |
 JV5043| CB1112 CORNELL RM 2                         26.790 METERS 21213     |
 JV5043|---------------------------------------------------------------------|
 JV5043
 JV5043                          SUPERSEDED SURVEY CONTROL
 JV5043
 JV5043  NAD 83(1986)-  39 03 29.05845(N)    076 10 32.01485(W) AD(       ) 2
 JV5043  NAD 27      -  39 03 28.65900(N)    076 10 33.18500(W) AD(       ) 2
 JV5043
 JV5043.Superseded values are not recommended for survey control.
 JV5043
 JV5043.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5043.See file dsdata.pdf to determine how the superseded data were derived.
 JV5043
 JV5043_MARKER: DS = TRIANGULATION STATION DISK
 JV5043_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5043_STAMPING: CORNELL 1938
 JV5043_MARK LOGO: CGS
 JV5043_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5043+STABILITY: SURFACE MOTION
 JV5043
 JV5043  HISTORY     - Date     Condition        Report By
 JV5043  HISTORY     - 1938     MONUMENTED       CGS
 JV5043  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5043
 JV5043                          STATION DESCRIPTION
 JV5043
 JV5043'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5043'STATION IS LOCATED 1/2 MILE SW OF GORDON POINT ON TILGHMAN NECK
 JV5043'ON THE E SIDE OF CHESTER RIVER, ON PROPERTY OF MRS. ALICE CORNELL
 JV5043'AT THE EDGE OF A HIGH WOOD, AND 10.8 METERS S OF HIGH-WATER LINE
 JV5043'AND 3.3 METERS E OF PROJECTION OF TRAIL ROAD LEADING TO WATERS
 JV5043'EDGE.
 JV5043'
 JV5043'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5043'DISKS SET IN CONCRETE.
 JV5043'
 JV5043'REFERENCE MARK NO.1 IS SE OF STATION AT W EDGE OF TRAIL ROAD
 JV5043'(1-1/2 MILES FROM CENTER LINE).
 JV5043'
 JV5043'REFERENCE MARK NO.2 IS WSW OF STATION AMONG TREES AND 15 METERS
 JV5043'S OF HIGH-WATER LINE AND 21.5 METERS SW OF CENTER LINE OF TRAIL
 JV5043'ROAD.
 JV5043'
 JV5043'TO REACH STATION FROM CENTERVILLE, TAKE U.S. HIGHWAY 213, 0.7
 JV5043'MILE S TO JUNCTION WITH STATE HIGHWAY 18, GO 3.2 MILES ON STATE
 JV5043'HIGHWAY 18, TURN RIGHT ONTO GRAVEL ROAD, GO 1.1 MILES TO FORK,
 JV5043'TURN RIGHT, CONTINUE ON GRAVEL ROAD 0.4 MILE, TURN LEFT, GO 1.0
 JV5043'MILE TO T-INTERSECTION, TURN RIGHT AND GO 1.5 MILES TO FARM
 JV5043'BUILDINGS AND GATE, PROCEED STRAIGHT AHEAD THROUGH FARMYARD,
 JV5043'THROUGH GATE AND PROCEED ALONG E EDGE OF WOOD (OPEN FIELD WITH
 JV5043'SMALL SEEDLING PINES ON RIGHT) ON TRAIL ABOUT 0.2 MILE TO
 JV5043'FENCE LINE AND TRAIL, CONTINUE AHEAD ON TRAIL ROAD THROUGH
 JV5043'WOODS FOR ABOUT 0.2 MILE TO WATERS EDGE AND STATION.
 JV5043
 JV5043                          STATION RECOVERY (1961)
 JV5043
 JV5043'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5043'STATION MARK AND REFERENCE MARKS WERE NOT RECOVERED AFTER A
 JV5043'THOROUGH SEARCH.  STATION NOW PLOTS VERY CLOSE TO THE SHORE AND
 JV5043'HAS PROBABLY BEEN DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5802 ***********************************************************************
 HV5802  DESIGNATION -  CORNER
 HV5802  PID         -  HV5802
 HV5802  STATE/COUNTY-  MD/TALBOT
 HV5802  COUNTRY     -  US
 HV5802  USGS QUAD   -  QUEENSTOWN (2016)
 HV5802
 HV5802                         *CURRENT SURVEY CONTROL
 HV5802  ______________________________________________________________________
 HV5802* NAD 83(1991) POSITION- 38 52 31.22723(N) 076 07 55.77621(W)   ADJUSTED
 HV5802* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5802  ______________________________________________________________________
 HV5802  GEOID HEIGHT    -        -34.313 (meters)                     GEOID18
 HV5802  LAPLACE CORR    -         -4.12  (seconds)                    DEFLEC18
 HV5802  HORZ ORDER      -  THIRD
 HV5802
 HV5802.The horizontal coordinates were established by classical geodetic methods
 HV5802.and adjusted by the National Geodetic Survey in January 1992.
 HV5802
 HV5802.The orthometric height was scaled from a topographic map.
 HV5802
 HV5802.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5802.GEOID18 height accuracy estimate available here.
 HV5802
 HV5802.Click photographs - Photos may exist for this station.
 HV5802
 HV5802.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5802
 HV5802. The following values were computed from the NAD 83(1991) position.
 HV5802
 HV5802;                    North         East     Units Scale Factor Converg.
 HV5802;SPC MD       -   134,525.896   475,304.679   MT  0.99994985   +0 32 40.9
 HV5802;SPC MD       -   441,357.04  1,559,395.43   sFT  0.99994985   +0 32 40.9
 HV5802;UTM  18      - 4,303,552.208   401,791.112   MT  0.99971877   -0 42 38.3
 HV5802
 HV5802!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5802!SPC MD       -   1.00000510  x   0.99994985  =   0.99995495
 HV5802!UTM  18      -   1.00000510  x   0.99971877  =   0.99972387
 HV5802
 HV5802:                Primary Azimuth Mark                     Grid Az
 HV5802:SPC MD       -  WHEEL                                    029 31 56.2
 HV5802:UTM  18      -  WHEEL                                    030 47 15.4
 HV5802
 HV5802_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0179103552(NAD 83)
 HV5802
 HV5802|---------------------------------------------------------------------|
 HV5802| PID    Reference Object                     Distance      Geod. Az  |
 HV5802|                                                           dddmmss.s |
 HV5802| HV5757 WHEEL                               493.830 METERS 0300437.1 |
 HV5802| HV5689 PICK                                368.261 METERS 10220     |
 HV5802| HV5790 RIGHT                               392.427 METERS 33915     |
 HV5802|---------------------------------------------------------------------|
 HV5802
 HV5802                          SUPERSEDED SURVEY CONTROL
 HV5802
 HV5802  NAD 83(1986)-  38 52 31.22248(N)    076 07 55.78917(W) AD(       ) 3
 HV5802  NAD 27      -  38 52 30.77800(N)    076 07 56.97600(W) AD(       ) 3
 HV5802  USSD        -  38 52 31.17200(N)    076 07 56.74200(W) AD(       ) 3
 HV5802
 HV5802.Superseded values are not recommended for survey control.
 HV5802
 HV5802.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5802.See file dsdata.pdf to determine how the superseded data were derived.
 HV5802
 HV5802_MARKER: H = DRILL HOLE
 HV5802_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5802_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5802
 HV5802  HISTORY     - Date     Condition        Report By
 HV5802  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5802  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5802
 HV5802                          STATION DESCRIPTION
 HV5802
 HV5802'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5802'STATION IS ON THE SOUTHERN SHORE OF THE BRANCH OF WYE RIVER
 HV5802'BOUNDING WYE ISLAND ON THE S, ABOUT 1/4 MILE W OF ENTRANCE TO
 HV5802'PICKERINGS CREEK, IN CULTIVATED LAND, ABOUT 15 FEET ABOVE HIGH
 HV5802'WATER, 50 YARDS SW OF EDGE OF BANK, 55 YARDS S OF GULLY, 70 YARDS
 HV5802'NNW OF TREES IN DEPRESSION, AND 120 YARDS W OF POINT OF BANK.
 HV5802'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5802'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5802'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES. THE LETTERS
 HV5802'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 HV5802'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH TOP 2 INCHES
 HV5802'BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO VARIOUS
 HV5802'POINTS OF REFERENCE ARE AS FOLLOWS--NEAR PEAK OF LARGE BARN, 3/4
 HV5802'MILE, S 37 DEG 26 MIN W. RIGHT CORNER OF LARGE HOUSE, 1-1/2 MILES,
 HV5802'S 75 DEG 6 MIN W. CHIMNEY ON CORNER OF LARGE HOUSE, 1 MILE, S 79
 HV5802'DEG 16 MIN W. NAIL IN BLAZE IN LARGE ELM TREE, 50.41 METERS, N 4
 HV5802'DEG 27 MIN W. NEAR PEAK OF BUILDING, 1 MILE, N 2 DEG 24 MIN W.
 HV5802'NAIL IN BLAZE IN ONE OF TWIN ELM TREES, 47.11 METERS (154.6 FEET),
 HV5802'N 43 DEG 14 MIN E.  NEAR PEAK OF HOUSE, 1-1/4 MILES, N 81 DEG 4
 HV5802'MIN E.  LEFT PEAK OF HOUSE WITH TWO CHIMNEYS, 1-1/2 MILES, S 87
 HV5802'DEG 43 MIN E.  NAIL IN BLAZE IN 14-INCH OAK TREE, 61.44 METERS,
 HV5802'(201.6 FEET), S 38 DEG 29 MIN E.
 HV5802
 HV5802                          STATION RECOVERY (1940)
 HV5802
 HV5802'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5802'STATION MARK SEARCHED FOR BUT NOT FOUND.  REFERENCE TREES SEEM TO
 HV5802'HAVE BEEN WASHED OUT.  ORIENTATION SEEMS TO INDICATE THAT MARK WAS
 HV5802'LOCATED IN FIELD WHICH HAS BEEN UNDER CULTIVATION, AND WAS
 HV5802'PROBABLY PLOWED OVER.
 HV5802'
 HV5802'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7552 ***********************************************************************
 HV7552  DESIGNATION -  CORNER
 HV7552  PID         -  HV7552
 HV7552  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7552  COUNTRY     -  US
 HV7552  USGS QUAD   -  ANACOSTIA (2016)
 HV7552
 HV7552                         *CURRENT SURVEY CONTROL
 HV7552  ______________________________________________________________________
 HV7552* NAD 83(1993) POSITION- 38 48 20.82529(N) 076 58 12.78588(W)   ADJUSTED
 HV7552* NAVD 88 ORTHO HEIGHT -    78.    (meters)      256.    (feet) SCALED
 HV7552  ______________________________________________________________________
 HV7552  GEOID HEIGHT    -        -32.341 (meters)                     GEOID18
 HV7552  LAPLACE CORR    -         -3.64  (seconds)                    DEFLEC18
 HV7552  HORZ ORDER      -  SECOND
 HV7552
 HV7552.The horizontal coordinates were established by classical geodetic methods
 HV7552.and adjusted by the National Geodetic Survey in November 1994.
 HV7552
 HV7552.The orthometric height was scaled from a topographic map.
 HV7552
 HV7552.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7552.GEOID18 height accuracy estimate available here.
 HV7552
 HV7552.Click photographs - Photos may exist for this station.
 HV7552
 HV7552.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7552
 HV7552. The following values were computed from the NAD 83(1993) position.
 HV7552
 HV7552;                    North         East     Units Scale Factor Converg.
 HV7552;SPC MD       -   126,447.165   402,586.792   MT  0.99995059   +0 01 07.3
 HV7552;SPC MD       -   414,852.07  1,320,820.17   sFT  0.99995059   +0 01 07.3
 HV7552;UTM  18      - 4,297,068.404   328,922.618   MT  0.99996041   -1 14 06.0
 HV7552
 HV7552!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7552!SPC MD       -   0.99999288  x   0.99995059  =   0.99994347
 HV7552!UTM  18      -   0.99999288  x   0.99996041  =   0.99995329
 HV7552
 HV7552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2892297068(NAD 83)
 HV7552
 HV7552                          SUPERSEDED SURVEY CONTROL
 HV7552
 HV7552  NAD 83(1991)-  38 48 20.82411(N)    076 58 12.78682(W) AD(       ) 2
 HV7552  NAD 83(1986)-  38 48 20.82348(N)    076 58 12.79919(W) AD(       ) 2
 HV7552  NAD 27      -  38 48 20.41572(N)    076 58 13.88801(W) AD(       ) 2
 HV7552
 HV7552.Superseded values are not recommended for survey control.
 HV7552
 HV7552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7552.See file dsdata.pdf to determine how the superseded data were derived.
 HV7552
 HV7552_MARKER: DE = TRAVERSE STATION DISK
 HV7552_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7552_STAMPING: CORNER 1958
 HV7552_MARK LOGO: CGS
 HV7552_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7552+STABILITY: SURFACE MOTION
 HV7552
 HV7552  HISTORY     - Date     Condition        Report By
 HV7552  HISTORY     - 1958     MONUMENTED       CGS
 HV7552  HISTORY     - 1970     MARK NOT FOUND   NGS
 HV7552
 HV7552                          STATION DESCRIPTION
 HV7552
 HV7552'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7552'THIS IS AN UNOCCUPIED TRAVERSE STATION AND WAS TIED TO
 HV7552'TRIANGULATION STATION PHELPS 1958 BY TRAVERSE.
 HV7552'
 HV7552'STATION IS LOCATED 3.4 MILES SOUTHWEST OF SUITLAND, 0.2 MILE
 HV7552'EAST OF PHELPS CORNER AND ABOUT 1.8 MILES SOUTHEAST OF DISTRICT
 HV7552'LINE.  STATION IS 26 FEET NORTH-NORTHEAST OF APPROXIMATE CENTERLINE
 HV7552'OF SURFACED ROAD, 14 FEET WEST-NORTHWEST OF DRIVEWAY, 1 FOOT
 HV7552'SOUTH-SOUTHWEST OF FENCE AND 1-1/2 FEET SOUTHEAST OF WITNESS
 HV7552'POST.  THE MARK IS A STANDARD TRAVERSE DISK SET IN A 12X12 INCH
 HV7552'MONUMENT, PROJECTS 4 INCHES AND STAMPED CORNER 1958.
 HV7552'
 HV7552'TO REACH FROM STATION PHELPS GO EAST AND SOUTH ON GRAVEL ROAD
 HV7552'FOR 0.15 MILE TO STATE HIGHWAY NO. 414.  TURN RIGHT AND GO
 HV7552'SOUTHWEST ON STATE HIGHWAY NO. 414 FOR 0.4 MILE TO DIAGONAL
 HV7552'CROSSROADS.  TURN SHARP LEFT AND GO EASTERLY ON BRINKLEY ROAD
 HV7552'FOR 0.15 MILE TO STATION ON LEFT (NORTH) SIDE OF ROAD AS
 HV7552'DESCRIBED.
 HV7552'
 HV7552'THIS TRAVERSE STATION IS THE AZIMUTH MARK FOR TRIANGULATION
 HV7552'STATION PHELPS AND FOR TRAVERSE STATION PHELPS R. M. NO. 2.
 HV7552
 HV7552                          STATION RECOVERY (1970)
 HV7552
 HV7552'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7552'THE STATION WAS SEARCHED FOR BUT NOT FOUND.  IT IS PRESUMED TO BE
 HV7552'DESTROYED BY CONSTRUCTION OF APARTMENT HOUSES AND INTERSTATE HIGHWAY
 HV7552'495 IN THE IMMEDIATE AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6730 ***********************************************************************
 JV6730  DESIGNATION -  CORNER
 JV6730  PID         -  JV6730
 JV6730  STATE/COUNTY-  MD/HARFORD
 JV6730  COUNTRY     -  US
 JV6730  USGS QUAD   -  NORRISVILLE (2016)
 JV6730
 JV6730                         *CURRENT SURVEY CONTROL
 JV6730  ______________________________________________________________________
 JV6730* NAD 83(2011) POSITION- 39 43 15.98152(N) 076 34 07.12565(W)   ADJUSTED
 JV6730* NAD 83(2011) ELLIP HT-   196.607 (meters)        (06/27/12)   ADJUSTED
 JV6730* NAD 83(2011) EPOCH   -  2010.00
 JV6730* NAVD 88 ORTHO HEIGHT -   229.1   (meters)      752.    (feet) GPS OBS
 JV6730  ______________________________________________________________________
 JV6730  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV6730  GEOID HEIGHT    -        -32.472 (meters)                     GEOID99
 JV6730  GEOID HEIGHT    -        -32.457 (meters)                     GEOID18
 JV6730  NAD 83(2011) X  -  1,141,124.261 (meters)                     COMP
 JV6730  NAD 83(2011) Y  - -4,778,337.828 (meters)                     COMP
 JV6730  NAD 83(2011) Z  -  4,054,341.418 (meters)                     COMP
 JV6730  LAPLACE CORR    -         -1.80  (seconds)                    DEFLEC18
 JV6730
 JV6730  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6730  Standards:
 JV6730         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6730            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6730  -------------------------------------------------------------------
 JV6730  NETWORK    0.94   1.51           0.40   0.37   0.77     -0.12231212
 JV6730  -------------------------------------------------------------------
 JV6730  Click here for local accuracies and other accuracy information.
 JV6730
 JV6730.The horizontal coordinates were established by GPS observations
 JV6730.and adjusted by the National Geodetic Survey in June 2012.
 JV6730
 JV6730.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6730.been affixed to the stable North American tectonic plate. See 
 JV6730.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6730
 JV6730.The horizontal coordinates are valid at the epoch date displayed above
 JV6730.which is a decimal equivalence of Year/Month/Day.
 JV6730
 JV6730.The orthometric height was determined by GPS observations and a
 JV6730.high-resolution geoid model.
 JV6730
 JV6730.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6730.GEOID18 height accuracy estimate available here.
 JV6730
 JV6730.Click photographs - Photos may exist for this station.
 JV6730
 JV6730.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6730
 JV6730.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6730
 JV6730.The ellipsoidal height was determined by GPS observations
 JV6730.and is referenced to NAD 83.
 JV6730
 JV6730. The following values were computed from the NAD 83(2011) position.
 JV6730
 JV6730;                    North         East     Units Scale Factor Converg.
 JV6730;SPC MD       -   228,151.864   436,986.431   MT  1.00005868   +0 16 14.6
 JV6730;SPC MD       -   748,528.24  1,433,679.65   sFT  1.00005868   +0 16 14.6
 JV6730;SPC PA S     -    43,734.058   701,290.612   MT  1.00003996   +0 45 59.2
 JV6730;SPC PA S     -   143,484.16  2,300,817.62   sFT  1.00003996   +0 45 59.2
 JV6730;UTM  18      - 4,397,979.745   365,554.582   MT  0.99982254   -1 00 09.3
 JV6730
 JV6730!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6730!SPC MD       -   0.99996916  x   1.00005868  =   1.00002783
 JV6730!SPC PA S     -   0.99996916  x   1.00003996  =   1.00000912
 JV6730!UTM  18      -   0.99996916  x   0.99982254  =   0.99979170
 JV6730
 JV6730_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6555497979(NAD 83)
 JV6730
 JV6730|---------------------------------------------------------------------|
 JV6730| PID    Reference Object                     Distance      Geod. Az  |
 JV6730|                                                           dddmmss.s |
 JV6730| JV6731 CORNER AZ MK                        371.426 METERS 12930     |
 JV6730|---------------------------------------------------------------------|
 JV6730
 JV6730                          SUPERSEDED SURVEY CONTROL
 JV6730
 JV6730  NAD 83(2007)-  39 43 15.98171(N)    076 34 07.12633(W) AD(2002.00) 0
 JV6730  ELLIP H (02/10/07)  196.628  (m)                       GP(2002.00)    
 JV6730  ELLIP H (08/30/02)  196.638  (m)                       GP(       ) 4 2
 JV6730  ELLIP H (03/31/00)  196.548  (m)                       GP(       ) 3 1
 JV6730  NAD 83(1991)-  39 43 15.98205(N)    076 34 07.12494(W) AD(       ) 1
 JV6730  ELLIP H (01/27/92)  196.622  (m)                       GP(       ) 4 1
 JV6730  NAD 83(1986)-  39 43 15.97472(N)    076 34 07.12968(W) AD(       ) 1
 JV6730  NGVD 29 (06/18/91)  229.3    (m)  UNKNOWN  model used  GPS OBS        
 JV6730
 JV6730.Superseded values are not recommended for survey control.
 JV6730
 JV6730.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6730.See file dsdata.pdf to determine how the superseded data were derived.
 JV6730
 JV6730_MARKER: DD = SURVEY DISK
 JV6730_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6730_STAMPING: 116 CORNER 1989
 JV6730_MARK LOGO: MD-025
 JV6730_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6730_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6730+STABILITY: SURFACE MOTION
 JV6730_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6730+SATELLITE: SATELLITE OBSERVATIONS - June 15, 1997
 JV6730
 JV6730  HISTORY     - Date     Condition        Report By
 JV6730  HISTORY     - 1989     MONUMENTED       RDA
 JV6730  HISTORY     - 19970615 GOOD             MD-005
 JV6730
 JV6730                          STATION DESCRIPTION
 JV6730
 JV6730'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6730'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6730'2.0 MILES NORTHWEST OF THE VILLAGE OF NORRISVILLE.
 JV6730'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 136 AND
 JV6730'STATE HIGHWAY 23 IN THE VILLAGE OF NORRISVILLE PROCEED NORTHWEST ALONG
 JV6730'HIGHWAY 23 0.25 MILES TO ITS INTERSECTION WITH CHURCH LANE.  TURN LEFT
 JV6730'AND PROCEED NORTHWEST ALONG CHURCH LANE 0.4 MILES TO ITS INTERSECTION
 JV6730'WITH DUNCAN ROAD.  TURN RIGHT AND PROCEED NORTHWEST ALONG DUNCAN ROAD
 JV6730'0.84 MILES TO ITS INTERSECTION WITH LONG CORNER ROAD.  TURN RIGHT AND
 JV6730'PROCEED NORTHWEST ALONG LONG CORNER ROAD 1.49 MILES TO STATION ON THE
 JV6730'LEFT.
 JV6730'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6730'ABOUT 1 INCH BELOW GROUND STAMPED 116 CORNER 1989.  THE STATION IS
 JV6730'17.0 FEET SOUTHWEST OF THE CENTERLINE OF LONG CORNER ROAD, 56.8 FEET
 JV6730'SOUTHEAST OF A PRIVATE DRIVEWAY ELECTRIC LAMP POST, AND 95.5 FEET EAST
 JV6730'OF A 14 INCH WHITE PINE TREE.
 JV6730
 JV6730                          STATION RECOVERY (1997)
 JV6730
 JV6730'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV6730'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) RECOVERED
 JV6730'AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6731 ***********************************************************************
 JV6731  DESIGNATION -  CORNER AZ MK
 JV6731  PID         -  JV6731
 JV6731  STATE/COUNTY-  MD/HARFORD
 JV6731  COUNTRY     -  US
 JV6731  USGS QUAD   -  NORRISVILLE (2016)
 JV6731
 JV6731                         *CURRENT SURVEY CONTROL
 JV6731  ______________________________________________________________________
 JV6731* NAD 83(2011) POSITION- 39 43 08.32236(N) 076 33 55.09099(W)   ADJUSTED
 JV6731* NAD 83(2011) ELLIP HT-   166.920 (meters)        (06/27/12)   ADJUSTED
 JV6731* NAD 83(2011) EPOCH   -  2010.00
 JV6731* NAVD 88 ORTHO HEIGHT -   199.4   (meters)      654.    (feet) VERTCON3
 JV6731  ______________________________________________________________________
 JV6731  GEOID HEIGHT    -        -32.457 (meters)                     GEOID18
 JV6731  NAD 83(2011) X  -  1,141,432.822 (meters)                     COMP
 JV6731  NAD 83(2011) Y  - -4,778,395.857 (meters)                     COMP
 JV6731  NAD 83(2011) Z  -  4,054,140.747 (meters)                     COMP
 JV6731  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 JV6731
 JV6731  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6731  Standards:
 JV6731         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6731            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6731  -------------------------------------------------------------------
 JV6731  NETWORK    1.31   3.68           0.58   0.48   1.88      0.18063352
 JV6731  -------------------------------------------------------------------
 JV6731  Click here for local accuracies and other accuracy information.
 JV6731
 JV6731.The horizontal coordinates were established by GPS observations
 JV6731.and adjusted by the National Geodetic Survey in June 2012.
 JV6731
 JV6731.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6731.been affixed to the stable North American tectonic plate. See 
 JV6731.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6731
 JV6731.The horizontal coordinates are valid at the epoch date displayed above
 JV6731.which is a decimal equivalence of Year/Month/Day.
 JV6731
 JV6731.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6731.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6731
 JV6731.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6731.GEOID18 height accuracy estimate available here.
 JV6731
 JV6731.Click photographs - Photos may exist for this station.
 JV6731
 JV6731.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6731
 JV6731.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6731
 JV6731.The ellipsoidal height was determined by GPS observations
 JV6731.and is referenced to NAD 83.
 JV6731
 JV6731. The following values were computed from the NAD 83(2011) position.
 JV6731
 JV6731;                    North         East     Units Scale Factor Converg.
 JV6731;SPC MD       -   227,916.993   437,274.196   MT  1.00005814   +0 16 22.2
 JV6731;SPC MD       -   747,757.67  1,434,623.76   sFT  1.00005814   +0 16 22.2
 JV6731;SPC PA S     -    43,501.690   701,580.393   MT  1.00004043   +0 46 07.0
 JV6731;SPC PA S     -   142,721.79  2,301,768.34   sFT  1.00004043   +0 46 07.0
 JV6731;UTM  18      - 4,397,738.594   365,836.990   MT  0.99982160   -1 00 01.5
 JV6731
 JV6731!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6731!SPC MD       -   0.99997381  x   1.00005814  =   1.00003195
 JV6731!SPC PA S     -   0.99997381  x   1.00004043  =   1.00001424
 JV6731!UTM  18      -   0.99997381  x   0.99982160  =   0.99979542
 JV6731
 JV6731_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6583697738(NAD 83)
 JV6731
 JV6731|---------------------------------------------------------------------|
 JV6731| PID    Reference Object                     Distance      Geod. Az  |
 JV6731|                                                           dddmmss.s |
 JV6731| JV6730 CORNER                              371.426 METERS 30930     |
 JV6731|---------------------------------------------------------------------|
 JV6731
 JV6731                          SUPERSEDED SURVEY CONTROL
 JV6731
 JV6731  NAD 83(2007)-  39 43 08.32253(N)    076 33 55.09172(W) AD(2002.00) 0
 JV6731  ELLIP H (02/10/07)  166.940  (m)                       GP(2002.00)    
 JV6731  ELLIP H (09/18/02)  166.948  (m)                       GP(       ) 4 2
 JV6731  NAD 83(1991)-  39 43 08.32279(N)    076 33 55.09028(W) AD(       ) 1
 JV6731  ELLIP H (01/27/92)  166.933  (m)                       GP(       ) 4 1
 JV6731  NAD 83(1986)-  39 43 08.31547(N)    076 33 55.09502(W) AD(       ) 1
 JV6731  NGVD 29 (06/18/91)  199.6    (m)  UNKNOWN  model used  GPS OBS        
 JV6731
 JV6731.Superseded values are not recommended for survey control.
 JV6731
 JV6731.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6731.See file dsdata.pdf to determine how the superseded data were derived.
 JV6731
 JV6731_MARKER: DZ = AZIMUTH MARK DISK
 JV6731_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6731_STAMPING: 116 CORNER 1989
 JV6731_MARK LOGO: MD-025
 JV6731_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6731_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6731+STABILITY: SURFACE MOTION
 JV6731_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6731+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6731
 JV6731  HISTORY     - Date     Condition        Report By
 JV6731  HISTORY     - 1989     MONUMENTED       RDA
 JV6731
 JV6731                          STATION DESCRIPTION
 JV6731
 JV6731'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6731'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTHEAST ALONG
 JV6731'LONG CORNER ROAD 0.29 MILES TO THE MARK ON THE LEFT.
 JV6731'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6731'ABOUT 1 INCH BELOW GROUND STAMPED 116 CORNER 1989.  THE MARK IS 20.0
 JV6731'FEET NORTHEAST OF THE CENTERLINE OF LONG CORNER ROAD, 12.5 FEET
 JV6731'SOUTHWEST OF A ROW OF WHITE PINE TREES, 66.0 FEET SOUTHEAST OF THE
 JV6731'CENTERLINE OF A PRIVATE DRIVE BOX 5621 AND 1218.62 FEET FROM THE
 JV6731'STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7049 ***********************************************************************
 HV7049  DESIGNATION -  CORNER RESET
 HV7049  PID         -  HV7049
 HV7049  STATE/COUNTY-  MD/CHARLES
 HV7049  COUNTRY     -  US
 HV7049  USGS QUAD   -  ROCK POINT (2016)
 HV7049
 HV7049                         *CURRENT SURVEY CONTROL
 HV7049  ______________________________________________________________________
 HV7049* NAD 83(1993) POSITION- 38 15 34.49491(N) 076 50 19.99228(W)   ADJUSTED
 HV7049* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7049  ______________________________________________________________________
 HV7049  GEOID HEIGHT    -        -33.687 (meters)                     GEOID18
 HV7049  LAPLACE CORR    -         -0.78  (seconds)                    DEFLEC18
 HV7049  HORZ ORDER      -  THIRD
 HV7049
 HV7049.The horizontal coordinates were established by classical geodetic methods
 HV7049.and adjusted by the National Geodetic Survey in November 1994.
 HV7049
 HV7049.The orthometric height was scaled from a topographic map.
 HV7049
 HV7049.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7049.GEOID18 height accuracy estimate available here.
 HV7049
 HV7049.Click photographs - Photos may exist for this station.
 HV7049
 HV7049.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7049
 HV7049. The following values were computed from the NAD 83(1993) position.
 HV7049
 HV7049;                    North         East     Units Scale Factor Converg.
 HV7049;SPC MD       -    65,828.803   414,101.043   MT  1.00000728   +0 06 04.0
 HV7049;SPC MD       -   215,973.33  1,358,596.51   sFT  1.00000728   +0 06 04.0
 HV7049;SPC VA N     - 2,067,127.482 3,645,371.264   MT  0.99996778   +1 02 12.2
 HV7049;SPC VA N     - 6,781,900.75 11,959,855.56   sFT  0.99996778   +1 02 12.2
 HV7049;UTM  18      - 4,236,215.820   339,114.906   MT  0.99991878   -1 08 20.1
 HV7049
 HV7049!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7049!SPC MD       -   1.00000517  x   1.00000728  =   1.00001245
 HV7049!SPC VA N     -   1.00000517  x   0.99996778  =   0.99997295
 HV7049!UTM  18      -   1.00000517  x   0.99991878  =   0.99992395
 HV7049
 HV7049:                Primary Azimuth Mark                     Grid Az
 HV7049:SPC MD       -  COBB POINT BAR LIGHT                     150 14 54.0
 HV7049:SPC VA N     -  COBB POINT BAR LIGHT                     149 18 45.8
 HV7049:UTM  18      -  COBB POINT BAR LIGHT                     151 29 18.1
 HV7049
 HV7049_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3911436215(NAD 83)
 HV7049
 HV7049|---------------------------------------------------------------------|
 HV7049| PID    Reference Object                     Distance      Geod. Az  |
 HV7049|                                                           dddmmss.s |
 HV7049| CX2649 CORNER RM 3                          17.759 METERS 00326     |
 HV7049| CX2647 CORNER RM 1                          17.078 METERS 00839     |
 HV7049| HV7000 COBB POINT BAR LIGHT                APPROX. 2.2 KM 1502058.0 |
 HV7049| CX2648 CORNER RM 2                          17.069 METERS 23712     |
 HV7049| CX2650 CORNER RM 4                          29.520 METERS 32844     |
 HV7049|---------------------------------------------------------------------|
 HV7049
 HV7049                          SUPERSEDED SURVEY CONTROL
 HV7049
 HV7049  NAD 83(1991)-  38 15 34.49400(N)    076 50 19.99776(W) AD(       ) 3
 HV7049  NAD 83(1986)-  38 15 34.49487(N)    076 50 20.00800(W) AD(       ) 3
 HV7049  NAD 27      -  38 15 34.00300(N)    076 50 21.09300(W) AD(       ) 3
 HV7049  USSD        -  38 15 34.63300(N)    076 50 21.17700(W) AD(       ) 3
 HV7049
 HV7049.Superseded values are not recommended for survey control.
 HV7049
 HV7049.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7049.See file dsdata.pdf to determine how the superseded data were derived.
 HV7049
 HV7049_MARKER: H = DRILL HOLE
 HV7049_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7049
 HV7049  HISTORY     - Date     Condition        Report By
 HV7049  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7049  HISTORY     - 1973     SEE DESCRIPTION  NGS
 HV7049
 HV7049                          STATION DESCRIPTION
 HV7049
 HV7049'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7049'ON THE WESTERN SHORE OF WICOMICO RIVER, ON THE EASTERN SIDE OF AN
 HV7049'ISLAND KNOWN AS COBB POINT NECK, ABOUT HALF-WAY BETWEEN COBB POINT
 HV7049'AND THE ENTRANCE TO NEALS SOUND, IN A CULTIVATED FIELD ON A BLUFF
 HV7049'BORDERED WITH PINE TREES, ABOUT 15 FEET ABOVE HIGH WATER, 3 YARDS
 HV7049'W OF A WIRE FENCE RUNNING ALONG EDGE OF BLUFF AND 21 YARDS ENE OF
 HV7049'A WIRE FENCE WHICH SEPARATES CORNFIELD FROM PINE WOODS.  STATION
 HV7049'MARK IS CENTER OF STANDARD MONUMENT OF MARYLAND SHELL FISH SURVEY,
 HV7049'WHICH IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE
 HV7049'AT THE TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND
 HV7049'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK
 HV7049'LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE LETTERS
 HV7049'U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE CENTER HOLE IS
 HV7049'ALWAYS AT THE CENTER OF THE MONUMENT AND IF THE MARKING HAS BEEN
 HV7049'BROKEN OFF WITHOUT DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE
 HV7049'SECTION MAY BE USED AS THE LOCATION OF THE STATION.  THE MONUMENT
 HV7049'IS SET VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5
 HV7049'INCHES ABOVE THE SURFACE.  DISTANCES AND BEARINGS FROM THE
 HV7049'STATION OF VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN
 HV7049'BLAZE IN 3-INCH CEDAR TREE, 16.98 METERS (55.7 FEET), S 20 DEG 23
 HV7049'MIN W.  NAIL IN BLAZE IN 8-INCH PINE TREE, 21.41 METERS (70.2
 HV7049'FEET), S 82 DEG 4 MIN W.  NAIL IN BLAZE IN 12-INCH PINE TREE,
 HV7049'32.22 METERS (105.7 FEET), N 74 DEG 19 MIN W.  MIDDLE CHIMNEY OF
 HV7049'HOUSE, 1/4 MILE, N 32 DEG 32 MIN W.  LEFT CHIMNEY ON HOUSE ON ST.
 HV7049'MARGARETS ISLAND, 1-5/8 MILES, S 70 DEG 43 MIN E.
 HV7049
 HV7049                          STATION RECOVERY (1973)
 HV7049
 HV7049'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 HV7049'RM 1 TO RM 2 OBSTRUCTED.
 HV7049'
 HV7049'THE STATION MARK WAS RECOVERED AND FOUND IN GOOD CONDITION.  THE
 HV7049'REFERENCE POINTS WHICH WERE PLACED IN THE TREES IN 1908 WERE NOT
 HV7049'FOUND.  THIS POINT WAS TO BE DESTROYED DURING THE CONSTRUCTION OF
 HV7049'A BULK HEAD.  TWO NEW REFERENCE MARKS WERE ESTABLISHED AT THIS
 HV7049'DATE AND THREE REFERENCE POINTS WERE ALSO ESTABLISHED AT THIS
 HV7049'DATE SO THE STATION COULD BE PLACED IN THE SAME POSITION AS IT WAS
 HV7049'BEFORE THE CONSTRUCTION BEGAN.  THE THREE REFERENCE POINTS WHICH
 HV7049'WERE ESTABLISHED AT THIS TIME ARE NAILS DRIVEN IN THE SOUTHWEST
 HV7049'SIDE OF THREE PINE TREES.  THESE POINT ARE NOT DESCRIBED IN THE
 HV7049'MAIN BODY OF THIS DESCRIPTION.  THEY WILL BE DESTROYED WHEN THE
 HV7049'CONSTRUCTION OF A HOUSE IS COMPLETED IN THE FUTURE.
 HV7049'
 HV7049'FOLLOWING IS A COMPLETE NEW DESCRIPTION OF THE STATION.
 HV7049'
 HV7049'THE STATION IS LOCATED ON THE SOUTH EDGE OF COBB ISLAND, ABOUT 10
 HV7049'MILES SOUTHEAST OF THE TOLL BRIDGE OVER THE POTOMAC RIVER, 1 MILE
 HV7049'SOUTH OF ROCK POINT AND ON THE SHORES OF THE POTOMAC RIVER AND THE
 HV7049'WICOMICO RIVER.  THE PROPERTY IS OWNED BY MR. KENNETH E. KLOPP OF
 HV7049'COBB ISLAND.  MR. KLOPPS PHONE NUMBER IS UNKNOWN.
 HV7049'
 HV7049'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND
 HV7049'STATE HIGHWAY 257 AT THE NORTH END OF THE TOLL BRIDGE OVER THE
 HV7049'POTOMAC RIVER, GO SOUTHEAST ON STATE HIGHWAY 257 FOR 9.8 MILES TO
 HV7049'STATE HIGHWAY 254.  TURN RIGHT AND GO SOUTHWEST ON STATE HIGHWAY
 HV7049'254 FOR 1.2 MILES TO THE SOUTHWEST END OF THE BRIDGE ENTERING COBB
 HV7049'ISLAND.  CONTINUE SOUTHWEST ON BRIDGE BOULEVARD FOR 0.15 MILE TO A
 HV7049'CROSSROADS.  TURN LEFT AND GO EAST ON EAST MAIN STREET FOR 0.65
 HV7049'MILE TO SOUTHWEST CRAIN BOULEVARD.  TURN RIGHT AND GO SOUTH ON
 HV7049'SOUTHWEST CRAIN BOULEVARD FOR 0.1 MILE TO A DIM ROAD ON THE LEFT.
 HV7049'TURN LEFT AND GO EAST ON THE DIM ROAD FOR 0.05 MILE TO THE SHORE
 HV7049'LINE AND THE STATION.
 HV7049'
 HV7049'THE STATION MARK IS A STANDARD DISK STAMPED CORNER 1908 1973, SET
 HV7049'IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 HV7049'1-INCH.  IT IS 56.3 FEET EAST-SOUTHEAST OF A WITNESS POST, 56.1
 HV7049'FEET SOUTHWEST OF A WITNESS POST, 96 FEET SOUTHWEST OF A SMALL
 HV7049'HOUSE WHICH IS OWNED BY MR. EDWARD DONEL AND 27 FEET NORTH OF THE
 HV7049'SHORE LINE. (NOTE 1B 7A)
 HV7049'
 HV7049'REFERENCE MARK ONE IS A STANDARD DISK STAMPED CORNER 1908 NO 1
 HV7049'1973, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 HV7049'PROJECTS 6-INCHES.  IT IS 54 FEET NORTH OF THE SHORE LINE AND 1.7
 HV7049'FEET NORTHWEST OF THE WITNESS POST. (NOTE 11B)
 HV7049'
 HV7049'REFERENCE MARK TWO IS A STANDARD DISK STAMPED CORNER 1908 NO 2
 HV7049'1973, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 HV7049'PROJECTS 6-INCHES.  IT IS 44 FEET NORTH OF THE SHORE LINE, 23 FEET
 HV7049'SOUTHWEST OF A 20-INCH PINE TREE AND 1.5 FEET SOUTHWEST OF THE
 HV7049'WITNESS POST.  (NOTE 11B)
 HV7049'
 HV7049'COBB POINT BAR LIGHT 1954 MAY BE USED AS AN AZIMUTH FROM THIS
 HV7049'STATION, SEE DESCRIPTION THEREOF.
 HV7049'
 HV7049'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN ON COBB ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5008 ***********************************************************************
 JV5008  DESIGNATION -  CORPSE
 JV5008  PID         -  JV5008
 JV5008  STATE/COUNTY-  MD/QUEEN ANNES
 JV5008  COUNTRY     -  US
 JV5008  USGS QUAD   -  CENTREVILLE (2017)
 JV5008
 JV5008                         *CURRENT SURVEY CONTROL
 JV5008  ______________________________________________________________________
 JV5008* NAD 83(1991) POSITION- 39 06 21.67409(N) 076 06 46.04782(W)   ADJUSTED
 JV5008* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5008  ______________________________________________________________________
 JV5008  GEOID HEIGHT    -        -33.558 (meters)                     GEOID18
 JV5008  LAPLACE CORR    -         -2.47  (seconds)                    DEFLEC18
 JV5008  HORZ ORDER      -  THIRD
 JV5008
 JV5008.The horizontal coordinates were established by classical geodetic methods
 JV5008.and adjusted by the National Geodetic Survey in January 1992.
 JV5008
 JV5008.The orthometric height was scaled from a topographic map.
 JV5008
 JV5008.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5008.GEOID18 height accuracy estimate available here.
 JV5008
 JV5008.Click photographs - Photos may exist for this station.
 JV5008
 JV5008.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5008
 JV5008. The following values were computed from the NAD 83(1991) position.
 JV5008
 JV5008;                    North         East     Units Scale Factor Converg.
 JV5008;SPC MD       -   160,148.602   476,736.453   MT  0.99995790   +0 33 24.6
 JV5008;SPC MD       -   525,420.87  1,564,092.85   sFT  0.99995790   +0 33 24.6
 JV5008;UTM  18      - 4,329,131.295   403,784.187   MT  0.99971399   -0 42 07.0
 JV5008
 JV5008!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5008!SPC MD       -   1.00000515  x   0.99995790  =   0.99996305
 JV5008!UTM  18      -   1.00000515  x   0.99971399  =   0.99971913
 JV5008
 JV5008:                Primary Azimuth Mark                     Grid Az
 JV5008:SPC MD       -  INDIAN                                   037 35 24.4
 JV5008:UTM  18      -  INDIAN                                   038 50 56.0
 JV5008
 JV5008_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0378429131(NAD 83)
 JV5008
 JV5008|---------------------------------------------------------------------|
 JV5008| PID    Reference Object                     Distance      Geod. Az  |
 JV5008|                                                           dddmmss.s |
 JV5008| JV5002 INDIAN                              APPROX. 1.0 KM 0380849.0 |
 JV5008|---------------------------------------------------------------------|
 JV5008
 JV5008                          SUPERSEDED SURVEY CONTROL
 JV5008
 JV5008  NAD 83(1986)-  39 06 21.66835(N)    076 06 46.05975(W) AD(       ) 3
 JV5008  NAD 27      -  39 06 21.27700(N)    076 06 47.23700(W) AD(       ) 3
 JV5008  USSD        -  39 06 21.67300(N)    076 06 47.03200(W) AD(       ) 3
 JV5008
 JV5008.Superseded values are not recommended for survey control.
 JV5008
 JV5008.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5008.See file dsdata.pdf to determine how the superseded data were derived.
 JV5008
 JV5008_MARKER: H = DRILL HOLE
 JV5008_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5008_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5008+STABILITY: SURFACE MOTION
 JV5008
 JV5008  HISTORY     - Date     Condition        Report By
 JV5008  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5008  HISTORY     - 1938     MARK NOT FOUND   CGS
 JV5008
 JV5008                          STATION DESCRIPTION
 JV5008
 JV5008'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5008'STATION IS ON THE SOUTHEASTERN SHORE OF CHESTER RIVER, ABOUT 3/8
 JV5008'MILE SE OF DEEP POINT, 1-1/2 MILES ENE OF SPANIARD WHARF AND 5/8
 JV5008'MILE SW OF INDIANTOWN WHARF, ON A SANDY MARSH STRIP, ABOUT 1 FOOT
 JV5008'ABOVE HIGH WATER, 3 YARDS E OF SHORE, 18 YARDS SSE OF A POINT, 43
 JV5008'YARDS N BY E OF ANOTHER POINT, AND 1/8 MILE W OF A LARGE HOUSE.
 JV5008'
 JV5008'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5008'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5008'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5008'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5008'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5008'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5008'
 JV5008'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5008'FOLLOWS--CHIMNEY OUTSIDE OF OLD WHARF, 7/8 MILE, S 38 DEG 31
 JV5008'MIN W.  RIGHT TANGENT OF SPANIARD WHARF, 1-1/2 MILES, S 69 DEG 53
 JV5008'MIN W.  CHIMNEY OF HOUSE NEAR CLIFFS LANDING, 1-3/4 MILESN 78 DEG
 JV5008'53 MIN W. RIGHT PEAK OF HOUSE ON DEEP POINT, 1/2 MILE, N 56 DEG 48
 JV5008'MIN W.  LEFT ONE OF TWO CHIMNEYS ON S END OF BRICK HOUSE, 1 MILE,
 JV5008'N 06 DEG 27 MIN E. LEFT TANGENT OF INDIANTOWN WHARF, 5/8 MILE,
 JV5008'N 32 DEG 41 MIN E. CHIMNEY OF ELL OF HOUSE NEAR INDIANTOWN WHARF,
 JV5008'5/8 MILE, N 41 DEG 17 MIN E. LEFT TANGENT OF LARGE HOUSE, 1/4
 JV5008'MILE, N 87 DEG 35 MIN E. RIGHT CHIMNEY OF HOUSE, 7/8 MILE, S 22 DEG
 JV5008'41 MIN E.
 JV5008
 JV5008                          STATION RECOVERY (1938)
 JV5008
 JV5008'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5008'THE STATION HAS BEEN DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5139 ***********************************************************************
 JV5139  DESIGNATION -  CORR
 JV5139  PID         -  JV5139
 JV5139  STATE/COUNTY-  MD/KENT
 JV5139  COUNTRY     -  US
 JV5139  USGS QUAD   -  SWAN POINT (2016)
 JV5139
 JV5139                         *CURRENT SURVEY CONTROL
 JV5139  ______________________________________________________________________
 JV5139* NAD 83(1991) POSITION- 39 09 32.00164(N) 076 15 14.41431(W)   ADJUSTED
 JV5139* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5139  ______________________________________________________________________
 JV5139  GEOID HEIGHT    -        -33.301 (meters)                     GEOID18
 JV5139  LAPLACE CORR    -         -2.09  (seconds)                    DEFLEC18
 JV5139  HORZ ORDER      -  THIRD
 JV5139
 JV5139.The horizontal coordinates were established by classical geodetic methods
 JV5139.and adjusted by the National Geodetic Survey in January 1992.
 JV5139
 JV5139.The orthometric height was scaled from a topographic map.
 JV5139
 JV5139.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5139.GEOID18 height accuracy estimate available here.
 JV5139
 JV5139.Click photographs - Photos may exist for this station.
 JV5139
 JV5139.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5139
 JV5139. The following values were computed from the NAD 83(1991) position.
 JV5139
 JV5139;                    North         East     Units Scale Factor Converg.
 JV5139;SPC MD       -   165,908.300   464,475.005   MT  0.99996202   +0 28 05.6
 JV5139;SPC MD       -   544,317.48  1,523,865.08   sFT  0.99996202   +0 28 05.6
 JV5139;UTM  18      - 4,335,157.715   391,655.102   MT  0.99974454   -0 47 31.0
 JV5139
 JV5139!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5139!SPC MD       -   1.00000511  x   0.99996202  =   0.99996713
 JV5139!UTM  18      -   1.00000511  x   0.99974454  =   0.99974965
 JV5139
 JV5139_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9165535157(NAD 83)
 JV5139
 JV5139|---------------------------------------------------------------------|
 JV5139| PID    Reference Object                     Distance      Geod. Az  |
 JV5139|                                                           dddmmss.s |
 JV5139| JV5144 SPIKE                               390.606 METERS 18047     |
 JV5139| JV5147 URIE                                336.011 METERS 25713     |
 JV5139|---------------------------------------------------------------------|
 JV5139
 JV5139                          SUPERSEDED SURVEY CONTROL
 JV5139
 JV5139  NAD 83(1986)-  39 09 31.99562(N)    076 15 14.42495(W) AD(       ) 3
 JV5139  NAD 27      -  39 09 31.61400(N)    076 15 15.60300(W) AD(       ) 3
 JV5139  USSD        -  39 09 31.96400(N)    076 15 15.43000(W) AD(       ) 3
 JV5139
 JV5139.Superseded values are not recommended for survey control.
 JV5139
 JV5139.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5139.See file dsdata.pdf to determine how the superseded data were derived.
 JV5139
 JV5139_MARKER: Z = SEE DESCRIPTION
 JV5139_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5139_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5139+STABILITY: SURFACE MOTION
 JV5139
 JV5139  HISTORY     - Date     Condition        Report By
 JV5139  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5139  HISTORY     - 1935     GOOD             CGS
 JV5139  HISTORY     - 1939     GOOD             CGS
 JV5139  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5139
 JV5139                          STATION DESCRIPTION
 JV5139
 JV5139'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5139'ON THE EASTERN SHORE OF SWAN CREEK, ABOUT 1-1/4 MILES N OF ROCK
 JV5139'HALL LANDING, ABOUT 1 FOOT ABOVE HIGH WATER, 6 YARDS NE OF ROUNDED
 JV5139'POINT OF SHORE, 13 YARDS NW OF SQUARE CUT IN SHORE, 13 YARDS SE OF
 JV5139'POINT WHERE WIRE FENCE MEETS SHORE, AND 50 AND 65 YARDS S OF TWO
 JV5139'LARGE TREES.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF
 JV5139'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 JV5139'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 JV5139'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 JV5139'TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH TILE PIPE BURIED
 JV5139'WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES
 JV5139'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5139'FOLLOWS--CHIMNEY OF HOUSE, 1-1/8 MILES, S 15 DEG 45 MIN W, CHIMNEY OF
 JV5139'OLD HOUSE, 3/4 MILE, S 36 DEG 37 MIN W. RIGHT CHIMNEY OF STRONGS
 JV5139'HOUSE, 1 MILE, S 48 DEG 59 MIN W.  NEAR PEAK OF HOUSE BETWEEN TWO
 JV5139'BARNS, 5/8 MILE, N 79 DEG 38 MIN W. LARGE SQUARE CHIMNEY OF LARGE
 JV5139'BRICK HOUSE, 1/2 MILE, N 36 DEG 21 MIN W.  N CHIMNEY OF BRICK
 JV5139'HOUSE 150 YARDS, N 25 DEG 21 MIN E.  E CHIMNEY OF LARGE HOUSE, 3/8
 JV5139'MILE, N 66 DEG 28 MIN E.  CHIMNEY OF OLD HOUSE, 1/2 MILE, S 48 DEG
 JV5139'8 MIN E.
 JV5139
 JV5139                          STATION RECOVERY (1935)
 JV5139
 JV5139'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (JCP)
 JV5139'STATION CORR WAS RECOVERED IN GOOD CONDITION.  THE STATION IS
 JV5139'STANDARD CONCRETE MARKER OF MARYLAND SHELL FISH SURVEY.  THE
 JV5139'STATION IS ON EASTERN SHORE OF SWAN CREEK, ABOUT 1-1/4 MILES N OF
 JV5139'ROCK HALL LANDING, ABOUT 1 FOOT ABOVE HIGH WATER, 9.6 METERS NE OF
 JV5139'ROUNDED POINT OF SHORE, 6 METERS W OF SHORE LINE, 64.5 METERS SW
 JV5139'OF LARGE HOLE IN GROUND NEAR EDGE OF BANK, 17 METERS NNW OF POINT
 JV5139'WHERE WIRE FENCE MEETS SHORE, 87.8 METERS W OF JUNCTION OF N-S
 JV5139'FENCE AND E-W FENCE WHICH IS S OF THE BRICK FARMHOUSE, ABOUT 100
 JV5139'METERS S OF SW CORNER OF BRICK FARMHOUSE.
 JV5139'
 JV5139'TO REACH FROM TOLCHESTER FERRY, GO EASTERLY ON CONCRETE ROAD ABOUT
 JV5139'1 MILE TO ROAD INTERSECTION, TURN RIGHT ON 9-FOOT CONCRETE ROAD
 JV5139'AND GO ABOUT 4.4 MILES, WHERE THERE IS A DIRT ROAD BRANCHING TO
 JV5139'THE RIGHT, TAKE DIRT ROAD AND CONTINUE TO END OF ROAD WHICH IS AT
 JV5139'BRICK FARMHOUSE.  STATION IS S OF FARMHOUSE.
 JV5139
 JV5139                          STATION RECOVERY (1939)
 JV5139
 JV5139'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5139'STATION RECOVERED IN GOOD CONDITION.
 JV5139'
 JV5139'STATION IS ON THE EASTERN SHORE OF SWAN CREEK, ABOUT 1-1/4 MILES
 JV5139'N OF ROCK HALL LANDING, ABOUT 1 FOOT ABOVE HIGH WATER, IN THE TALL
 JV5139'GRASS ALONG THE SW EDGE OF A CULTIVATED FIELD 100 METERS SW OF A
 JV5139'FARMHOUSE, 13 METERS NW OF A WIRE FENCE, AND 5 METERS NE OF THE
 JV5139'HIGH-WATER LINE.
 JV5139'
 JV5139'STATION MARK IS A STANDARD CEMENT MONUMENT OF THE MARYLAND SHELL
 JV5139'FISH SURVEY.
 JV5139'
 JV5139'TO REACH THE STATION FROM THE POST OFFICE AT ROCK HALL, GO N 1.8
 JV5139'MILES, TURN LEFT AND FOLLOW ROAD FOR 0.4 MILE TO FARMHOUSE AND
 JV5139'STATION.
 JV5139'
 JV5139'STATION WAS NOT OCCUPIED.
 JV5139
 JV5139                          STATION RECOVERY (1961)
 JV5139
 JV5139'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5139'STATION NOT RECOVERED AFTER A CAREFUL SEARCH.  IT HAS PROBABLY
 JV5139'BEEN DESTROYED EITHER BY CULTIVATION OR BY EROSION OF THE SHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5033 ***********************************************************************
 JV5033  DESIGNATION -  CORSICA
 JV5033  PID         -  JV5033
 JV5033  STATE/COUNTY-  MD/QUEEN ANNES
 JV5033  COUNTRY     -  US
 JV5033  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5033
 JV5033                         *CURRENT SURVEY CONTROL
 JV5033  ______________________________________________________________________
 JV5033* NAD 83(1991) POSITION- 39 05 18.13954(N) 076 08 38.13343(W)   ADJUSTED
 JV5033* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5033  ______________________________________________________________________
 JV5033  GEOID HEIGHT    -        -33.558 (meters)                     GEOID18
 JV5033  LAPLACE CORR    -         -2.49  (seconds)                    DEFLEC18
 JV5033  HORZ ORDER      -  THIRD
 JV5033
 JV5033.The horizontal coordinates were established by classical geodetic methods
 JV5033.and adjusted by the National Geodetic Survey in January 1992.
 JV5033
 JV5033.The orthometric height was scaled from a topographic map.
 JV5033
 JV5033.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5033.GEOID18 height accuracy estimate available here.
 JV5033
 JV5033.Click photographs - Photos may exist for this station.
 JV5033
 JV5033.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5033
 JV5033. The following values were computed from the NAD 83(1991) position.
 JV5033
 JV5033;                    North         East     Units Scale Factor Converg.
 JV5033;SPC MD       -   158,163.772   474,061.987   MT  0.99995671   +0 32 14.3
 JV5033;SPC MD       -   518,908.98  1,555,318.37   sFT  0.99995671   +0 32 14.3
 JV5033;UTM  18      - 4,327,206.155   401,067.419   MT  0.99972052   -0 43 16.8
 JV5033
 JV5033!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5033!SPC MD       -   1.00000515  x   0.99995671  =   0.99996186
 JV5033!UTM  18      -   1.00000515  x   0.99972052  =   0.99972566
 JV5033
 JV5033:                Primary Azimuth Mark                     Grid Az
 JV5033:SPC MD       -  LANGFORD                                 286 58 30.2
 JV5033:UTM  18      -  LANGFORD                                 288 14 01.3
 JV5033
 JV5033_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0106727206(NAD 83)
 JV5033
 JV5033|---------------------------------------------------------------------|
 JV5033| PID    Reference Object                     Distance      Geod. Az  |
 JV5033|                                                           dddmmss.s |
 JV5033| JV5055 LANGFORD                            APPROX. 2.2 KM 2873044.5 |
 JV5033|---------------------------------------------------------------------|
 JV5033
 JV5033                          SUPERSEDED SURVEY CONTROL
 JV5033
 JV5033  NAD 83(1986)-  39 05 18.13396(N)    076 08 38.14538(W) AD(       ) 3
 JV5033  NAD 27      -  39 05 17.74000(N)    076 08 39.31700(W) AD(       ) 3
 JV5033  USSD        -  39 05 18.12700(N)    076 08 39.12800(W) AD(       ) 3
 JV5033
 JV5033.Superseded values are not recommended for survey control.
 JV5033
 JV5033.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5033.See file dsdata.pdf to determine how the superseded data were derived.
 JV5033
 JV5033_MARKER: N = NAIL
 JV5033_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5033_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5033+STABILITY: SURFACE MOTION
 JV5033
 JV5033  HISTORY     - Date     Condition        Report By
 JV5033  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5033  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV5033
 JV5033                          STATION DESCRIPTION
 JV5033
 JV5033'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5033'STATION IS ON THE EASTERN SHORE OF CHESTER RIVER, AT N SIDE OF
 JV5033'ENTRANCE TO CORSICA RIVER, AND ABOUT 3/8 MILE S OF LOWER SPANIARD
 JV5033'WHARF, IN A CULTIVATED FIELD, ABOUT 7 FEET ABOVE HIGH WATER, 16
 JV5033'YARDS E OF SHORE, 11 YARDS E OF EDGE OF BANK, AND 5 YARDS S OF
 JV5033'YOUNG PEACH ORCHARD.
 JV5033'
 JV5033'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5033'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5033'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 7 INCHES.  THE
 JV5033'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5033'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5033'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5033'
 JV5033'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5033'FOLLOWS--LEFT TANGENT OF WOODS ON GORDON POINT, 2-3/4 MILES, S 39 DEG
 JV5033'27 MIN W.  CHIMNEY OF SMALL HOUSE, 3-3/8 MILES, N 88 DEG 43 MIN W. S
 JV5033'GABLE OF BARN, 2-1/3 MILES, N 46 DEG 49 MIN W. W GABLE OF CORNCRIB,
 JV5033'1/2 MILE, N 86 DEG 07 MIN E. 24-INCH LOCUST TREE, 150 YARDS, S 55
 JV5033'DEG 25 MIN E. N CHIMNEY OF HOUSE, 1-1/2 MILES, S 35 DEG 15 MIN E.
 JV5033'EARLES WINDMILL, 3/4 MILE, S 01 DEG 57 MIN E. NE CORNER OF EARLES
 JV5033'BATHHOUSE, 3/4 MILE, S 00 DEG 31 MIN E.
 JV5033
 JV5033                          STATION RECOVERY (1939)
 JV5033
 JV5033'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5033'STATION SEARCHED FOR BUT NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6349 ***********************************************************************
 HV6349  DESIGNATION -  COTTAGE
 HV6349  PID         -  HV6349
 HV6349  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6349  COUNTRY     -  US
 HV6349  USGS QUAD   -  ANNAPOLIS (2016)
 HV6349
 HV6349                         *CURRENT SURVEY CONTROL
 HV6349  ______________________________________________________________________
 HV6349* NAD 83(1991) POSITION- 38 55 15.50833(N) 076 27 38.02698(W)   ADJUSTED
 HV6349* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6349  ______________________________________________________________________
 HV6349  GEOID HEIGHT    -        -33.481 (meters)                     GEOID18
 HV6349  LAPLACE CORR    -         -3.25  (seconds)                    DEFLEC18
 HV6349  HORZ ORDER      -  THIRD
 HV6349
 HV6349.The horizontal coordinates were established by classical geodetic methods
 HV6349.and adjusted by the National Geodetic Survey in January 1992.
 HV6349
 HV6349.The orthometric height was scaled from a topographic map.
 HV6349
 HV6349.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6349.GEOID18 height accuracy estimate available here.
 HV6349
 HV6349.Click photographs - Photos may exist for this station.
 HV6349
 HV6349.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6349
 HV6349. The following values were computed from the NAD 83(1991) position.
 HV6349
 HV6349;                    North         East     Units Scale Factor Converg.
 HV6349;SPC MD       -   139,371.859   446,778.815   MT  0.99995016   +0 20 18.8
 HV6349;SPC MD       -   457,255.84  1,465,806.83   sFT  0.99995016   +0 20 18.8
 HV6349;UTM  18      - 4,309,021.108   373,383.800   MT  0.99979741   -0 55 03.8
 HV6349
 HV6349!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6349!SPC MD       -   1.00000514  x   0.99995016  =   0.99995530
 HV6349!UTM  18      -   1.00000514  x   0.99979741  =   0.99980254
 HV6349
 HV6349:                Primary Azimuth Mark                     Grid Az
 HV6349:SPC MD       -  WASH                                     059 58 25.7
 HV6349:UTM  18      -  WASH                                     061 13 48.3
 HV6349
 HV6349_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7338309021(NAD 83)
 HV6349
 HV6349|---------------------------------------------------------------------|
 HV6349| PID    Reference Object                     Distance      Geod. Az  |
 HV6349|                                                           dddmmss.s |
 HV6349| HV6157 WASH                                APPROX.11.6 KM 0601844.5 |
 HV6349| CX2652 COTTAGE RM                           13.700 METERS 25345     |
 HV6349|---------------------------------------------------------------------|
 HV6349
 HV6349                          SUPERSEDED SURVEY CONTROL
 HV6349
 HV6349  NAD 83(1986)-  38 55 15.50473(N)    076 27 38.03891(W) AD(       ) 3
 HV6349  NAD 27      -  38 55 15.09800(N)    076 27 39.18900(W) AD(       ) 3
 HV6349  USSD        -  38 55 15.46200(N)    076 27 39.01800(W) AD(       ) 3
 HV6349
 HV6349.Superseded values are not recommended for survey control.
 HV6349
 HV6349.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6349.See file dsdata.pdf to determine how the superseded data were derived.
 HV6349
 HV6349_MARKER: N = NAIL
 HV6349_SETTING: 0 = UNSPECIFIED SETTING
 HV6349
 HV6349  HISTORY     - Date     Condition        Report By
 HV6349  HISTORY     - 1906     MONUMENTED       MDSFC
 HV6349  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6349  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6349
 HV6349                          STATION DESCRIPTION
 HV6349
 HV6349'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV6349'ON THE W SHORE OF CHESAPEAKE BAY, NEAR GROUP OF COTTAGES CALLED
 HV6349'ARUNDEL ON THE BAY, ABOUT 2 MILES NW OF THOMAS POINT LIGHT.  STATION
 HV6349'IS 12 FEET BACK FROM EDGE OF AN 18-FOOT BANK, ABOUT 25 YARDS N OF
 HV6349'STEAMBOAT WHARF, AND 3 YARDS E OF E EDGE OF BOARDWALK 36 PACES
 HV6349'SE OF CONCORD COTTAGE.  CENTER MARKED BY NAIL IN STUB SET FLUSH
 HV6349'WITH GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER
 HV6349'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6349'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6349'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6349'COUNTER-SUNK IN TOP OF POST.  IT IS 13.70 METERS (44.9 FEET)
 HV6349'FROM STATION S 73 DEG 45 MIN W.  OTHER DISTANCES AND
 HV6349'BEARINGS ARE AS FOLLOWS--FLAGPOLE ON PAVILION, S 19 DEG 58
 HV6349'MIN W.  NAIL IN BLAZE ON 12-INCH OAK TREE, 15.50 METERS (50.9
 HV6349'FEET), S 73 DEG 55 MIN W.  PEAK OF CIRCULAR RED ROOF OF BATHHOUSE
 HV6349'IN WATER, 300 YARDS, N 10 DEG 11 MIN W.  STACK AT BAY RIDGE, 1
 HV6349'1/4 MILES, N 14 DEG 52 MIN E.  N FLAGPOLE ON WHARF, 75 YARDS,
 HV6349'N 84 DEG 25 MIN E.  GREEN BALL ON N END OF PLAYHOUSE, 80 YARDS,
 HV6349'S 14 DEG 17 MIN E.
 HV6349
 HV6349                          STATION RECOVERY (1932)
 HV6349
 HV6349'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6349'STATION MARK WHICH WAS A NAIL SET IN A STUB IN THE GROUND IS LOST.
 HV6349'
 HV6349'REFERENCE MONUMENT OF THE MARYLAND SHELL FISH SURVEY WAS
 HV6349'FOUND.  THIS MARK IS NOW 3 METERS BACK FROM THE EDGE OF THE BANK
 HV6349'AND 10 METERS FROM HIGH-WATER MARK.
 HV6349'
 HV6349'ALL OTHER REFERENCE MARKS HAVE BEEN DESTROYED BY IMPROVEMENTS
 HV6349'MADE IN THIS VICINITY.  THE STEAMBOAT WHARF MENTIONED IN THE
 HV6349'FORMER DESCRIPTION HAS BEEN REMOVED.
 HV6349
 HV6349                          STATION RECOVERY (1961)
 HV6349
 HV6349'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 HV6349'STATION WAS SEARCHED FOR BUT NOT FOUND.  THE DESCRIPTION OF 1932
 HV6349'BY L.O.C. STATED THE MARK WAS 3 METERS FROM THE EDGE OF BANK.  DUE
 HV6349'TO EROSION OF THE BANK IN THE AREA, IT IS ASSUMED THE STATION HAS
 HV6349'BEEN WASHED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6588 ***********************************************************************
 HV6588  DESIGNATION -  COTTAGE
 HV6588  PID         -  HV6588
 HV6588  STATE/COUNTY-  MD/ST MARYS
 HV6588  COUNTRY     -  US
 HV6588  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6588
 HV6588                         *CURRENT SURVEY CONTROL
 HV6588  ______________________________________________________________________
 HV6588* NAD 83(1993) POSITION- 38 09 37.06175(N) 076 25 50.90239(W)   ADJUSTED
 HV6588* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6588  ______________________________________________________________________
 HV6588  GEOID HEIGHT    -        -34.808 (meters)                     GEOID18
 HV6588  LAPLACE CORR    -         -6.03  (seconds)                    DEFLEC18
 HV6588  HORZ ORDER      -  THIRD
 HV6588
 HV6588.The horizontal coordinates were established by classical geodetic methods
 HV6588.and adjusted by the National Geodetic Survey in November 1994.
 HV6588
 HV6588.The orthometric height was scaled from a topographic map.
 HV6588
 HV6588.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6588.GEOID18 height accuracy estimate available here.
 HV6588
 HV6588.Click photographs - Photos may exist for this station.
 HV6588
 HV6588.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6588
 HV6588. The following values were computed from the NAD 83(1993) position.
 HV6588
 HV6588;                    North         East     Units Scale Factor Converg.
 HV6588;SPC MD       -    54,950.794   449,885.710   MT  1.00002724   +0 21 26.1
 HV6588;SPC MD       -   180,284.40  1,476,000.03   sFT  1.00002724   +0 21 26.1
 HV6588;UTM  18      - 4,224,567.475   374,649.852   MT  0.99979351   -0 53 03.0
 HV6588
 HV6588!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6588!SPC MD       -   1.00000535  x   1.00002724  =   1.00003259
 HV6588!UTM  18      -   1.00000535  x   0.99979351  =   0.99979886
 HV6588
 HV6588:                Primary Azimuth Mark                     Grid Az
 HV6588:SPC MD       -  ROD PRIESTS HOUSE 1908                   217 25 13.7
 HV6588:UTM  18      -  ROD PRIESTS HOUSE 1908                   218 39 42.8
 HV6588
 HV6588_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7464924567(NAD 83)
 HV6588
 HV6588|---------------------------------------------------------------------|
 HV6588| PID    Reference Object                     Distance      Geod. Az  |
 HV6588|                                                           dddmmss.s |
 HV6588| HV6574 ROD PRIESTS HOUSE 1908              APPROX. 1.4 KM 2174639.8 |
 HV6588| CX2651 COTTAGE RM                           12.820 METERS 34109     |
 HV6588|---------------------------------------------------------------------|
 HV6588
 HV6588                          SUPERSEDED SURVEY CONTROL
 HV6588
 HV6588  NAD 83(1991)-  38 09 37.06081(N)    076 25 50.90542(W) AD(       ) 3
 HV6588  NAD 83(1986)-  38 09 37.06170(N)    076 25 50.91892(W) AD(       ) 3
 HV6588  NAD 27      -  38 09 36.66900(N)    076 25 52.13600(W) AD(       ) 3
 HV6588  USSD        -  38 09 37.05000(N)    076 25 51.84500(W) AD(       ) 3
 HV6588
 HV6588.Superseded values are not recommended for survey control.
 HV6588
 HV6588.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6588.See file dsdata.pdf to determine how the superseded data were derived.
 HV6588
 HV6588_MARKER: Z = SEE DESCRIPTION
 HV6588_SETTING: 0 = UNSPECIFIED SETTING
 HV6588
 HV6588  HISTORY     - Date     Condition        Report By
 HV6588  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6588  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6588
 HV6588                          STATION DESCRIPTION
 HV6588
 HV6588'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6588'STATION IS ON THE NORTHWESTERN SHORE OF ST. INIGOES CREEK, ABOUT
 HV6588'1/2 MILE ENE OF ST. MARYS RIVER, AND 3/8 MILE WSW OF GRASON
 HV6588'WHARF.  STATION IS ON SAND, ABOUT 1 FOOT ABOVE HIGH WATER, 2
 HV6588'YARDS NNW OF SHORE, 20 YARDS SSE OF WOODS, AND 120 YARDS SW BY
 HV6588'W OF EXTREME END OF POINT.
 HV6588'
 HV6588'STATION MARK IS CENTER OF 3-INCH SQUARE WOODEN BOX WITH TOP
 HV6588'EVEN WITH SURFACE OF SAND.
 HV6588'
 HV6588'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV6588'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6588'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6588'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6588'TOP OF POST.  IT IS 12.82 METERS (42.1 FEET) FROM STATION
 HV6588'N 18 DEG 52 MIN W.  DISTANCES AND BEARINGS TO OTHER POINTS
 HV6588'OF REFERENCE ARE AS FOLLOWS--LEFT PEAK OF ROOF OF RALEYS BARN,
 HV6588'3/8 MILE, S 20 DEG 08 MIN W.  NEAR PEAK OF ROOF BETWEEN 2 CHIMNEYS
 HV6588'ON RALEYS HOUSE, 1/2 MILE, S 30 DEG 44 MIN W.  NAIL IN BLAZE IN
 HV6588'24-INCH PINE TREE, 26.03 METERS (85.4 FEET), N 17 DEG 38 MIN W.
 HV6588'CHIMNEY OF HOUSE, 1/4 MILE, N 32 DEG 03 MIN E.  NAIL IN BLAZE IN
 HV6588'DOUBLE 5-INCH PINE TREE, 30.90 METERS (101.4 FEET), N 44 DEG 55
 HV6588'MIN E.  BETWEEN 2 CHIMNEYS OF GRASONS HOUSE, 3/8 MILE, N 80 DEG 47
 HV6588'MIN E.  NAIL IN BLAZE IN 14-INCH CEDAR TREE, 17.93 METERS
 HV6588'(58.8 FEET), N 81 DEG 08 MIN E.  LEFT CHIMNEY OF OLD HOUSE, 1/2
 HV6588'MILE, S 68 DEG 07 MIN E.
 HV6588
 HV6588                          STATION RECOVERY (1942)
 HV6588
 HV6588'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6588'THE REFERENCE MARK WAS FOUND LYING IN THE SAND EVIDENTLY WASHED OUT
 HV6588'BY HIGH WATER.  THIS MARK IS DESTROYED.  DUE TO THE STATION
 HV6588'MARKS AGE AND NATURE IT IS RECOMMENDED THAT IT BE CLASSIFIED AS
 HV6588'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3931 ***********************************************************************
 JU3931  DESIGNATION -  COULTER 1898
 JU3931  PID         -  JU3931
 JU3931  STATE/COUNTY-  MD/CECIL
 JU3931  COUNTRY     -  US
 JU3931  USGS QUAD   -  NORTH EAST (2016)
 JU3931
 JU3931                         *CURRENT SURVEY CONTROL
 JU3931  ______________________________________________________________________
 JU3931* NAD 83(1991) POSITION- 39 34 06.84884(N) 075 58 52.80763(W)   ADJUSTED
 JU3931* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3931  ______________________________________________________________________
 JU3931  GEOID HEIGHT    -        -33.211 (meters)                     GEOID18
 JU3931  LAPLACE CORR    -         -0.86  (seconds)                    DEFLEC18
 JU3931  HORZ ORDER      -  THIRD
 JU3931
 JU3931.The horizontal coordinates were established by classical geodetic methods
 JU3931.and adjusted by the National Geodetic Survey in January 1992.
 JU3931
 JU3931.The orthometric height was scaled from a topographic map.
 JU3931
 JU3931.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3931.GEOID18 height accuracy estimate available here.
 JU3931
 JU3931.Click photographs - Photos may exist for this station.
 JU3931
 JU3931.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3931
 JU3931. The following values were computed from the NAD 83(1991) position.
 JU3931
 JU3931;                    North         East     Units Scale Factor Converg.
 JU3931;SPC MD       -   211,616.349   487,532.852   MT  1.00002289   +0 38 21.7
 JU3931;SPC MD       -   694,277.97  1,599,514.03   sFT  1.00002289   +0 38 21.7
 JU3931;UTM  18      - 4,380,334.246   415,707.925   MT  0.99968748   -0 37 30.5
 JU3931
 JU3931!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3931!SPC MD       -   1.00000525  x   1.00002289  =   1.00002814
 JU3931!UTM  18      -   1.00000525  x   0.99968748  =   0.99969273
 JU3931
 JU3931:                Primary Azimuth Mark                     Grid Az
 JU3931:SPC MD       -  RED BANK 2 1898                          178 21 46.2
 JU3931:UTM  18      -  RED BANK 2 1898                          179 37 38.4
 JU3931
 JU3931_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1570780334(NAD 83)
 JU3931
 JU3931|---------------------------------------------------------------------|
 JU3931| PID    Reference Object                     Distance      Geod. Az  |
 JU3931|                                                           dddmmss.s |
 JU3931| JU3949 RED BANK 2 1898                     APPROX. 4.5 KM 1790007.9 |
 JU3931|---------------------------------------------------------------------|
 JU3931
 JU3931                          SUPERSEDED SURVEY CONTROL
 JU3931
 JU3931  NAD 83(1986)-  39 34 06.84102(N)    075 58 52.81238(W) AD(       ) 3
 JU3931  NAD 27      -  39 34 06.43700(N)    075 58 54.01600(W) AD(       ) 3
 JU3931  USSD        -  39 34 06.82300(N)    075 58 53.86600(W) AD(       ) 3
 JU3931
 JU3931.Superseded values are not recommended for survey control.
 JU3931
 JU3931.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3931.See file dsdata.pdf to determine how the superseded data were derived.
 JU3931
 JU3931_MARKER: Z = SEE DESCRIPTION
 JU3931_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JU3931_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3931
 JU3931  HISTORY     - Date     Condition        Report By
 JU3931  HISTORY     - 1898     MONUMENTED       CGS
 JU3931
 JU3931                          STATION DESCRIPTION
 JU3931
 JU3931'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JU3931'ON COULTERS POINT, NORTHEAST RIVER, AT HIGH-WATER LINE.  MARKED
 JU3931'BY TWO 6-INCH TILE PIPES SET ONE ABOVE THE OTHER, THE TOP OF
 JU3931'THE UPPER PIPE BEING 6 INCHES BELOW SURFACE OF GROUND.  THE
 JU3931'SURFACE MARK IS A 4-INCH PINE STUB WITH TOP EVEN WITH GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7192 ***********************************************************************
 HV7192  DESIGNATION -  COUNALLOR
 HV7192  PID         -  HV7192
 HV7192  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7192  COUNTRY     -  US
 HV7192  USGS QUAD   -  DEALE (2016)
 HV7192
 HV7192                         *CURRENT SURVEY CONTROL
 HV7192  ______________________________________________________________________
 HV7192* NAD 83(1993) POSITION- 38 50 38.45963(N) 076 32 15.68287(W)   ADJUSTED
 HV7192* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7192  ______________________________________________________________________
 HV7192  GEOID HEIGHT    -        -33.460 (meters)                     GEOID18
 HV7192  LAPLACE CORR    -         -3.73  (seconds)                    DEFLEC18
 HV7192  HORZ ORDER      -  THIRD
 HV7192
 HV7192.The horizontal coordinates were established by classical geodetic methods
 HV7192.and adjusted by the National Geodetic Survey in November 1994.
 HV7192
 HV7192.The orthometric height was scaled from a topographic map.
 HV7192
 HV7192.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7192.GEOID18 height accuracy estimate available here.
 HV7192
 HV7192.Click photographs - Photos may exist for this station.
 HV7192
 HV7192.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7192
 HV7192. The following values were computed from the NAD 83(1993) position.
 HV7192
 HV7192;                    North         East     Units Scale Factor Converg.
 HV7192;SPC MD       -   130,792.346   440,133.884   MT  0.99995000   +0 17 24.6
 HV7192;SPC MD       -   429,107.89  1,444,005.92   sFT  0.99995000   +0 17 24.6
 HV7192;UTM  18      - 4,300,590.449   366,553.443   MT  0.99981929   -0 57 52.5
 HV7192
 HV7192!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7192!SPC MD       -   1.00000529  x   0.99995000  =   0.99995529
 HV7192!UTM  18      -   1.00000529  x   0.99981929  =   0.99982458
 HV7192
 HV7192:                Primary Azimuth Mark                     Grid Az
 HV7192:SPC MD       -  SHELL                                    006 57 46.1
 HV7192:UTM  18      -  SHELL                                    008 13 03.2
 HV7192
 HV7192_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6655300590(NAD 83)
 HV7192
 HV7192|---------------------------------------------------------------------|
 HV7192| PID    Reference Object                     Distance      Geod. Az  |
 HV7192|                                                           dddmmss.s |
 HV7192| HV7186 SHELL                               APPROX. 0.7 KM 0071510.7 |
 HV7192| CX2653 COUNALLOR RP                         10.930 METERS 28537     |
 HV7192|---------------------------------------------------------------------|
 HV7192
 HV7192                          SUPERSEDED SURVEY CONTROL
 HV7192
 HV7192  NAD 83(1991)-  38 50 38.45963(N)    076 32 15.68286(W) AD(       ) 3
 HV7192  NAD 83(1986)-  38 50 38.45693(N)    076 32 15.69487(W) AD(       ) 3
 HV7192  NAD 27      -  38 50 38.06500(N)    076 32 16.83500(W) AD(       ) 3
 HV7192  USSD        -  38 50 38.42600(N)    076 32 16.65000(W) AD(       ) 3
 HV7192
 HV7192.Superseded values are not recommended for survey control.
 HV7192
 HV7192.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7192.See file dsdata.pdf to determine how the superseded data were derived.
 HV7192
 HV7192_MARKER: N = NAIL
 HV7192_SETTING: 0 = UNSPECIFIED SETTING
 HV7192
 HV7192  HISTORY     - Date     Condition        Report By
 HV7192  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7192  HISTORY     - 1957     MARK NOT FOUND   USGS
 HV7192  HISTORY     - 20031002 MARK NOT FOUND   USPSQD
 HV7192
 HV7192                          STATION DESCRIPTION
 HV7192
 HV7192'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7192'ON THE W SHORE OF UPPER WEST RIVER, ABOUT 250 YARDS N OF STEAMBOAT
 HV7192'WHARF AT GALESVILLE, AND ON S SIDE OF ENTRANCE TO COX CREEK, 22
 HV7192'FEET BACK FROM EDGE OF A 12-FOOT BLUFF, AND ABOUT 6 FEET N OF OLD
 HV7192'DEAD STUMP.
 HV7192'
 HV7192'STATION MARK IS NAIL IN PINE STUB FLUSH WITH GROUND.
 HV7192'
 HV7192'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7192'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7192'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7192'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7192'IS 10.93 METERS (35.9 FEET) FROM STATION IN BEARING N 74 DEG 23
 HV7192'MIN W. DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV7192'REFERENCE ARE AS FOLLOWS--CHIMNEY ON CHALK POINT WHARF HOUSE, 1/4
 HV7192'MILE, S 18 DEG 30 MIN W.  CHIMNEY ON GALESVILLE WHARF, 250 YARDS,
 HV7192'S 26 DEG 29 MIN W.  E PEAK ON WAYSONS STORE, 250 YARDS, S 58 DEG
 HV7192'37 MIN W.  CEDAR TREE, 18.25 METERS (59.9 FEET), N 26 DEG 11 MIN
 HV7192'W.  LERCHS WINDMILL, 1/2 MILE, S 43 DEG 30 MIN E.  E CHIMNEY ON
 HV7192'MR. HYDES HOUSE, 3/4 MILE, S 3 DEG 36 MIN E.
 HV7192
 HV7192                          STATION RECOVERY (1957)
 HV7192
 HV7192'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV7192'STATION ASSUMED DESTROYED WHEN NEW HOUSE WAS BUILT IN THE
 HV7192'APPROXIMATE LOCATION OF THE STATION.
 HV7192
 HV7192                          STATION RECOVERY (2003)
 HV7192
 HV7192'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7192'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6215 ***********************************************************************
 DN6215  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6215  DESIGNATION -  COUNTRY
 DN6215  PID         -  DN6215
 DN6215  STATE/COUNTY-  MD/CECIL
 DN6215  COUNTRY     -  US
 DN6215  USGS QUAD   -  RISING SUN (2016)
 DN6215
 DN6215                         *CURRENT SURVEY CONTROL
 DN6215  ______________________________________________________________________
 DN6215* NAD 83(2011) POSITION- 39 39 00.87533(N) 076 06 32.71442(W)   ADJUSTED
 DN6215* NAD 83(2011) ELLIP HT-    59.473 (meters)        (06/27/12)   ADJUSTED
 DN6215* NAD 83(2011) EPOCH   -  2010.00
 DN6215* NAVD 88 ORTHO HEIGHT -    92.44  (meters)      303.3   (feet) GPS OBS
 DN6215  ______________________________________________________________________
 DN6215  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6215  GEOID HEIGHT    -        -32.944 (meters)                     GEOID03
 DN6215  GEOID HEIGHT    -        -32.970 (meters)                     GEOID18
 DN6215  NAD 83(2011) X  -  1,180,594.158 (meters)                     COMP
 DN6215  NAD 83(2011) Y  - -4,773,806.382 (meters)                     COMP
 DN6215  NAD 83(2011) Z  -  4,048,198.988 (meters)                     COMP
 DN6215  LAPLACE CORR    -         -1.46  (seconds)                    DEFLEC18
 DN6215
 DN6215  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6215  Standards:
 DN6215         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6215            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6215  -------------------------------------------------------------------
 DN6215  NETWORK    0.64   1.39           0.29   0.23   0.71      0.00860538
 DN6215  -------------------------------------------------------------------
 DN6215  Click here for local accuracies and other accuracy information.
 DN6215
 DN6215.The horizontal coordinates were established by GPS observations
 DN6215.and adjusted by the National Geodetic Survey in June 2012.
 DN6215
 DN6215.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6215.been affixed to the stable North American tectonic plate. See 
 DN6215.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6215
 DN6215.The horizontal coordinates are valid at the epoch date displayed above
 DN6215.which is a decimal equivalence of Year/Month/Day.
 DN6215
 DN6215.The orthometric height was determined by GPS observations and a
 DN6215.high-resolution geoid model using precise GPS observation and
 DN6215.processing techniques.
 DN6215
 DN6215.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6215.GEOID18 height accuracy estimate available here.
 DN6215
 DN6215.Click photographs - Photos may exist for this station.
 DN6215
 DN6215.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6215
 DN6215.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6215
 DN6215.The ellipsoidal height was determined by GPS observations
 DN6215.and is referenced to NAD 83.
 DN6215
 DN6215. The following values were computed from the NAD 83(2011) position.
 DN6215
 DN6215;                    North         East     Units Scale Factor Converg.
 DN6215;SPC MD       -   220,569.424   476,467.131   MT  1.00004117   +0 33 33.0
 DN6215;SPC MD       -   723,651.52  1,563,209.25   sFT  1.00004117   +0 33 33.0
 DN6215;UTM  18      - 4,389,526.505   404,846.280   MT  0.99971147   -0 42 27.9
 DN6215
 DN6215!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6215!SPC MD       -   0.99999067  x   1.00004117  =   1.00003184
 DN6215!UTM  18      -   0.99999067  x   0.99971147  =   0.99970214
 DN6215
 DN6215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0484689526(NAD 83)
 DN6215
 DN6215                          SUPERSEDED SURVEY CONTROL
 DN6215
 DN6215  NAD 83(2007)-  39 39 00.87536(N)    076 06 32.71530(W) AD(2002.00) 1
 DN6215  ELLIP H (02/23/12)   59.501  (m)                       GP(2002.00) 4 1
 DN6215
 DN6215.Superseded values are not recommended for survey control.
 DN6215
 DN6215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6215.See file dsdata.pdf to determine how the superseded data were derived.
 DN6215
 DN6215_MARKER: DD = SURVEY DISK
 DN6215_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6215_STAMPING: COUNTRY 2008
 DN6215_MARK LOGO: MD-015
 DN6215_PROJECTION: FLUSH
 DN6215_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6215_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6215+STABILITY: SURFACE MOTION
 DN6215_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6215+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6215
 DN6215  HISTORY     - Date     Condition        Report By
 DN6215  HISTORY     - 20081204 MONUMENTED       GWS
 DN6215  HISTORY     - 20250917 GOOD             PROFLN
 DN6215
 DN6215                          STATION DESCRIPTION
 DN6215
 DN6215'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6215'THE STATION IS LOCATED ABOUT 7.0 MI (11.3 KM) NORTH OF HAVRE DE GRACE,
 DN6215'4.1 MI (6.6 KM) SOUTHWEST OF RISING SUN AND 3.1 MI (5.0 KM) NORTH OF
 DN6215'PORT DEPOSIT.
 DN6215'
 DN6215'TO REACH FROM THE JUNCTION OF LIBERTY GROVE ROAD AND MD 276 (JACOB
 DN6215'TOME HWY), GO SOUTH ON MD 276 (JACOB TOME HWY) FOR 2.94 MI (4.7 KM) TO
 DN6215'AN INTERSECTION.  TURN RIGHT AND GO NORTHWEST ON DR JACK ROAD FOR 1.47
 DN6215'MI (2.4 KM) TO A FORK.  BEAR RIGHT AND GO NORTH-NORTHWEST ON FIRST
 DN6215'ROAD FOR 0.84 MI (1.4 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND
 DN6215'GO EAST-NORTHEAST ON HONEY BEE DR FOR 0.10 MI (0.2 KM) TO A
 DN6215'T-INTERSECTION.  TURN LEFT AND GO NORTH-NORTHWEST ON NORTH FRIENDSHIP
 DN6215'CT FOR 0.28 MI (0.5 KM) TO THE END AND THE STATION ON THE LEFT.
 DN6215'
 DN6215'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6215'CONCRETE MONUMENT ON THE WEST SIDE OF NORTH FRIENDSHIP COURT NEAR THE
 DN6215'REVERSE CURVE OF THE CURB AT THE END OF THE CUL-DE-SAC, 2 FT (0.6 M)
 DN6215'NORTHWEST OF THE BACK OF THE CURB, 20 FT (6.1 M) WEST OF THE WEST SIDE
 DN6215'OF THE DRIVEWAY AT 79 NORTH FRIENDSHIP COURT AND 55 FT (16.8 M) WEST
 DN6215'OF AN INLET IN FRONT OF 84 NORTH FRIENDSHIP COURT.
 DN6215
 DN6215                          STATION RECOVERY (2025)
 DN6215
 DN6215'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6215'THE MARK IS NOT NEAR THE REVERSE CURVE OF THE CURB, RATHER ABOUT 60 FT
 DN6215'(18.3 M) NORTHEAST OF IT.  IT IS 67 FT (20.4 M) NORTHEAST OF THE
 DN6215'NORTHEAST OR RIGHT SIDE EXTENDED OF HOUSE 71, 57 FT (17.4 M) WEST OF
 DN6215'THE INLET, 29 FT (8.8 M) WEST OF THE DRIVEWAY TO HOUSE 79 AT BACK OF
 DN6215'CURB, 17.5 FT (5.3 M) WEST OF MAILBOX 79, ABOUT 15 FT (4.6 M)
 DN6215'NORTHWEST OF THE NORTHWEST OR LEFT SIDE EXTENDED OF HOUSE 87 - TWO
 DN6215'STORY TAN VINYL SITTING WELL LOWER THAN THE STREET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3923 ***********************************************************************
 JU3923  DESIGNATION -  COURT 1898
 JU3923  PID         -  JU3923
 JU3923  STATE/COUNTY-  MD/CECIL
 JU3923  COUNTRY     -  US
 JU3923  USGS QUAD   -  NORTH EAST (2016)
 JU3923
 JU3923                         *CURRENT SURVEY CONTROL
 JU3923  ______________________________________________________________________
 JU3923* NAD 83(1991) POSITION- 39 30 48.65864(N) 075 53 04.93565(W)   ADJUSTED
 JU3923* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3923  ______________________________________________________________________
 JU3923  GEOID HEIGHT    -        -33.316 (meters)                     GEOID18
 JU3923  LAPLACE CORR    -         -1.13  (seconds)                    DEFLEC18
 JU3923  HORZ ORDER      -  THIRD
 JU3923
 JU3923.The horizontal coordinates were established by classical geodetic methods
 JU3923.and adjusted by the National Geodetic Survey in January 1992.
 JU3923
 JU3923.The orthometric height was scaled from a topographic map.
 JU3923
 JU3923.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3923.GEOID18 height accuracy estimate available here.
 JU3923
 JU3923.Click photographs - Photos may exist for this station.
 JU3923
 JU3923.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3923
 JU3923. The following values were computed from the NAD 83(1991) position.
 JU3923
 JU3923;                    North         East     Units Scale Factor Converg.
 JU3923;SPC MD       -   205,601.464   495,910.548   MT  1.00001173   +0 41 60.0
 JU3923;SPC MD       -   674,544.14  1,626,999.86   sFT  1.00001173   +0 41 60.0
 JU3923;UTM  18      - 4,374,138.158   423,948.146   MT  0.99967121   -0 33 46.5
 JU3923
 JU3923!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3923!SPC MD       -   1.00000511  x   1.00001173  =   1.00001684
 JU3923!UTM  18      -   1.00000511  x   0.99967121  =   0.99967632
 JU3923
 JU3923:                Primary Azimuth Mark                     Grid Az
 JU3923:SPC MD       -  ELK                                      234 40 09.9
 JU3923:UTM  18      -  ELK                                      235 55 56.4
 JU3923
 JU3923_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2394874138(NAD 83)
 JU3923
 JU3923|---------------------------------------------------------------------|
 JU3923| PID    Reference Object                     Distance      Geod. Az  |
 JU3923|                                                           dddmmss.s |
 JU3923| JU3927 ELK                                 APPROX. 1.6 KM 2352209.9 |
 JU3923|---------------------------------------------------------------------|
 JU3923
 JU3923                          SUPERSEDED SURVEY CONTROL
 JU3923
 JU3923  NAD 83(1986)-  39 30 48.65019(N)    075 53 04.94115(W) AD(       ) 3
 JU3923  NAD 27      -  39 30 48.25400(N)    075 53 06.15700(W) AD(       ) 3
 JU3923  USSD        -  39 30 48.63400(N)    075 53 05.98600(W) AD(       ) 3
 JU3923
 JU3923.Superseded values are not recommended for survey control.
 JU3923
 JU3923.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3923.See file dsdata.pdf to determine how the superseded data were derived.
 JU3923
 JU3923_MARKER: N = NAIL
 JU3923_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3923_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3923+STABILITY: SURFACE MOTION
 JU3923
 JU3923  HISTORY     - Date     Condition        Report By
 JU3923  HISTORY     - 1898     MONUMENTED       CGS
 JU3923  HISTORY     - 1905     GOOD             CGS
 JU3923
 JU3923                          STATION DESCRIPTION
 JU3923
 JU3923'DESCRIBED BY COAST AND GEODETIC SURVEY 1905
 JU3923'ON E SIDE OF ELK RIVER, JUST BELOW MOUTH OF BACK CREEK, ABOUT
 JU3923'IN CENTER OF OLD WHARF AT COURTHOUSE POINT.
 JU3923'
 JU3923'MARKED BY A BOX 3 BY 3 INCHES, FILLED WITH CEMENT, EXTENDING
 JU3923'3 FEET INTO GROUND AND 6 INCHES ABOVE SURFACE OF GROUND.  NAIL
 JU3923'IN TOP MARKS CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3925 ***********************************************************************
 JU3925  DESIGNATION -  COURT 2
 JU3925  PID         -  JU3925
 JU3925  STATE/COUNTY-  MD/CECIL
 JU3925  COUNTRY     -  US
 JU3925  USGS QUAD   -  NORTH EAST (2016)
 JU3925
 JU3925                         *CURRENT SURVEY CONTROL
 JU3925  ______________________________________________________________________
 JU3925* NAD 83(1991) POSITION- 39 30 48.32536(N) 075 53 05.22516(W)   ADJUSTED
 JU3925* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3925  ______________________________________________________________________
 JU3925  GEOID HEIGHT    -        -33.316 (meters)                     GEOID18
 JU3925  LAPLACE CORR    -         -1.13  (seconds)                    DEFLEC18
 JU3925  HORZ ORDER      -  THIRD
 JU3925
 JU3925.The horizontal coordinates were established by classical geodetic methods
 JU3925.and adjusted by the National Geodetic Survey in January 1992.
 JU3925
 JU3925.The orthometric height was scaled from a topographic map.
 JU3925
 JU3925.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3925.GEOID18 height accuracy estimate available here.
 JU3925
 JU3925.Click photographs - Photos may exist for this station.
 JU3925
 JU3925.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3925
 JU3925. The following values were computed from the NAD 83(1991) position.
 JU3925
 JU3925;                    North         East     Units Scale Factor Converg.
 JU3925;SPC MD       -   205,591.102   495,903.758   MT  1.00001171   +0 41 59.8
 JU3925;SPC MD       -   674,510.14  1,626,977.58   sFT  1.00001171   +0 41 59.8
 JU3925;UTM  18      - 4,374,127.951   423,941.131   MT  0.99967122   -0 33 46.7
 JU3925
 JU3925!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3925!SPC MD       -   1.00000511  x   1.00001171  =   1.00001682
 JU3925!UTM  18      -   1.00000511  x   0.99967122  =   0.99967633
 JU3925
 JU3925:                Primary Azimuth Mark                     Grid Az
 JU3925:SPC MD       -  B                                        329 05 07.2
 JU3925:UTM  18      -  B                                        330 20 53.7
 JU3925
 JU3925_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2394174127(NAD 83)
 JU3925
 JU3925|---------------------------------------------------------------------|
 JU3925| PID    Reference Object                     Distance      Geod. Az  |
 JU3925|                                                           dddmmss.s |
 JU3925| CB1385 COURT 2 RM 1                          7.010 METERS 08353     |
 JU3925| CB1386 COURT 2 RM 2                         10.851 METERS 14003     |
 JU3925| CB1387 COURT 2 RM 3                          9.403 METERS 16917     |
 JU3925| CB1388 COURT 2 RM 4                         16.673 METERS 20943     |
 JU3925| JU3939 B                                   APPROX. 1.1 KM 3294707.0 |
 JU3925|---------------------------------------------------------------------|
 JU3925
 JU3925                          SUPERSEDED SURVEY CONTROL
 JU3925
 JU3925  NAD 83(1986)-  39 30 48.31822(N)    075 53 05.23285(W) AD(       ) 3
 JU3925  NAD 27      -  39 30 47.91900(N)    075 53 06.45700(W) AD(       ) 3
 JU3925
 JU3925.Superseded values are not recommended for survey control.
 JU3925
 JU3925.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3925.See file dsdata.pdf to determine how the superseded data were derived.
 JU3925
 JU3925_MARKER: DD = SURVEY DISK
 JU3925_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3925_STAMPING: COURT 2
 JU3925_MARK LOGO: USACE
 JU3925_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3925+STABILITY: SURFACE MOTION
 JU3925
 JU3925  HISTORY     - Date     Condition        Report By
 JU3925  HISTORY     - 1937     MONUMENTED       USACE
 JU3925  HISTORY     - 1938     GOOD             CGS
 JU3925  HISTORY     - 1943     GOOD             CGS
 JU3925  HISTORY     - 1983     GOOD             LOCENG
 JU3925  HISTORY     - 1984     MARK NOT FOUND   USPSQD
 JU3925
 JU3925                          STATION DESCRIPTION
 JU3925
 JU3925'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3925'LOCATED ON THE S SIDE OF ELK RIVER ON COURTHOUSE POINT.  IT IS
 JU3925'32.2 METERS INSHORE FROM THE OUTER END OF WOOD DOCK, 11.3 METERS
 JU3925'NW FROM THE NW CORNER OF BOATHOUSE, AND 12.4 METERS SW FROM WHITE
 JU3925'FLASHING LIGHT.
 JU3925'
 JU3925'THE STATION AND REFERENCE MARKS NOS.1 AND 3 ARE U.S.E. DISKS SET
 JU3925'ATOP OF 6-INCH SQUARE CONCRETE POSTS.  REFERENCE MARKS NOS.2 AND
 JU3925'4 ARE NAILS.
 JU3925
 JU3925                          STATION RECOVERY (1938)
 JU3925
 JU3925'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3925'STATION MARK, REFERENCE MARK NO.1 AND COURT H. RECOVERED IN GOOD
 JU3925'CONDITION.
 JU3925'
 JU3925'STATION IS LOCATED ABOUT 4 MILES WSW OF CHESAPEAKE CITY ON THE
 JU3925'S SIDE OF ELK RIVER.  IT IS ON COURTHOUSE POINT, A PROMINENT POINT
 JU3925'1/2 MILE S OF THE MOUTH OF BACK CREEK, ON PROPERTY LEASED BY
 JU3925'H.E. SCHREIBER FOR A BOAT WORKS.
 JU3925'
 JU3925'STATION MARK IS ON EARTH FILLED, TIMBER BULKHEADED PART OF THE
 JU3925'POINT, 32.2 METERS INSHORE FROM THE N SIDE OF WOODEN WHARF ON
 JU3925'EXTREME POINT (WHARF BUILT AND MAINTAINED BY U.S.E.), 30.8 METERS
 JU3925'INSHORE FROM U.S.E.  TIDE HOUSE, 11.3 METERS NW OF NW CORNER OF
 JU3925'UNPAINTED BOAT SHED.  MARK IS A STANDARD U.S.E.D. DISK ATOP A
 JU3925'6-INCH SQUARE CONCRETE POST AND PROJECTS 6 INCHES ABOVE GROUND.
 JU3925'
 JU3925'COURTHOUSE POINT FLASHING WHITE LIGHT AND LIGHT TOWER HAVE BEEN
 JU3925'REMOVED.
 JU3925'
 JU3925'REFERENCE MARK NO.1 IS NW OF THE STATION MARK 7.018 METERS AND
 JU3925'3 METERS W OF THE TIMBER BULKHEAD ALONG THE E SIDE OF THE
 JU3925'POINT.  MARK IS A STANDARD U.S.E. REFERENCE DISK ATOP A 6-INCH
 JU3925'SQUARE CONCRETE POST AND PROJECTS 2 INCHES ABOVE THE
 JU3925'GROUND.  REFERENCE MARK STAMPED COURT H. IS SE OF THE STATION
 JU3925'MARK 9.408 METERS AND 4 METERS W OF THE W SIDE OF AN UNPAINTED
 JU3925'BOAT SHED.  MARK IS A STANDARD U.S.E. REFERENCE MARK ATOP A
 JU3925'6-INCH SQUARE CONCRETE POST PROJECTING 2 INCHES ABOVE GROUND.
 JU3925'THIS REFERENCE MARK IS THE SAME AS REFERENCE MARK NO.3 OF
 JU3925'THE ORIGINAL DESCRIPTION.
 JU3925'
 JU3925'TO REACH THE STATION FROM CHESAPEAKE CITY, GO S ON U.S. HIGHWAY
 JU3925'213, 2.3 MILES FROM THE LIFT BRIDGE OVER THE CANAL.  TURN RIGHT
 JU3925'ONTO DIRT ROAD FOR 1.4 MILES TAKE RIGHT FORK FOR 1.8 MILES TO
 JU3925'BOAT YARD OF H.E. SCHREIBER.  FOLLOW PRIVATE DRIVE THROUGH BOAT
 JU3925'YARD ACROSS MARINE RAILROAD TO COURTHOUSE POINT AND THE STATION.
 JU3925
 JU3925                          STATION RECOVERY (1943)
 JU3925
 JU3925'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 JU3925'RECOVERED AS DESCRIBED.  DESCRIPTION ADEQUATE.
 JU3925
 JU3925                          STATION RECOVERY (1983)
 JU3925
 JU3925'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (GSW)
 JU3925'U.S. ENGINEER DEPT COURT H RECOVERED IN GOOD CONDITION.
 JU3925'
 JU3925'LOCATED 17 FT BEARING 000 FROM NW CORNER OF BOAT HOUSE.
 JU3925'ONE METAL SPIKE BEARING 293 AT 24 FEET.
 JU3925'POSITION GIVEN FOR OTHER REFERENCE MARKS WOULD PUT THEM OUT INTO
 JU3925'THE ELK RIVER.  NO DOUBT THE RIVER HAS ERODED THE SHORE LINE SINCE
 JU3925'1937.
 JU3925'
 JU3925'TIME SPENT AT SITE FROM 1408 UNTIL 1443 ON JANUARY 31, 1983.
 JU3925
 JU3925                          STATION RECOVERY (1984)
 JU3925
 JU3925'RECOVERY NOTE BY US POWER SQUADRON 1984 (AHJ)
 JU3925'COURT 2 STATION MARK AND REFERENCE MARKS 1, 2 AND 4 NO LONGER
 JU3925'EXIST.  THEY WERE ON GROUND WHICH HAS BEEN ERODED AWAY.  REFERENCE
 JU3925'MARK NO. 3 IS COURT H USE WHICH WAS RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1846 ***********************************************************************
 JU1846  DESIGNATION -  COURT H
 JU1846  PID         -  JU1846
 JU1846  STATE/COUNTY-  MD/CECIL
 JU1846  COUNTRY     -  US
 JU1846  USGS QUAD   -  NORTH EAST (2016)
 JU1846
 JU1846                         *CURRENT SURVEY CONTROL
 JU1846  ______________________________________________________________________
 JU1846* NAD 83(1986) POSITION- 39 30 48.     (N) 075 53 05.     (W)   SCALED
 JU1846* NAVD 88 ORTHO HEIGHT -     1.423 (meters)        4.67  (feet) ADJUSTED
 JU1846  ______________________________________________________________________
 JU1846  GEOID HEIGHT    -        -33.316 (meters)                     GEOID18
 JU1846  DYNAMIC HEIGHT  -          1.422 (meters)        4.67  (feet) COMP
 JU1846  MODELED GRAVITY -    980,124.0   (mgal)                       NAVD 88
 JU1846
 JU1846  VERT ORDER      -  FIRST     CLASS I
 JU1846
 JU1846.The horizontal coordinates were scaled from a map and have
 JU1846.an estimated accuracy of +/- 6 seconds.
 JU1846
 JU1846.The orthometric height was determined by differential leveling and
 JU1846.adjusted by the NATIONAL GEODETIC SURVEY
 JU1846.in June 1991.
 JU1846
 JU1846.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1846.GEOID18 height accuracy estimate available here.
 JU1846
 JU1846.Click photographs - Photos may exist for this station.
 JU1846
 JU1846.The dynamic height is computed by dividing the NAVD 88
 JU1846.geopotential number by the normal gravity value computed on the
 JU1846.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1846.degrees latitude (g = 980.6199 gals.).
 JU1846
 JU1846.The modeled gravity was interpolated from observed gravity values.
 JU1846
 JU1846;                    North         East    Units  Estimated Accuracy
 JU1846;SPC MD       -   205,580.      495,910.      MT  (+/- 180 meters Scaled)
 JU1846
 JU1846_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ239741(NAD 83)
 JU1846
 JU1846                          SUPERSEDED SURVEY CONTROL
 JU1846
 JU1846  NGVD 29 (11/26/84)    1.659  (m)            5.44   (f) ADJUSTED    1 1
 JU1846
 JU1846.Superseded values are not recommended for survey control.
 JU1846
 JU1846.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1846.See file dsdata.pdf to determine how the superseded data were derived.
 JU1846
 JU1846_MARKER: DD = SURVEY DISK
 JU1846_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1846_STAMPING: COURT H
 JU1846_MARK LOGO: USACE
 JU1846_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1846+STABILITY: SURFACE MOTION
 JU1846
 JU1846  HISTORY     - Date     Condition        Report By
 JU1846  HISTORY     - UNK      MONUMENTED       USACE
 JU1846  HISTORY     - 1971     GOOD             NGS
 JU1846  HISTORY     - 1984     GOOD             USPSQD
 JU1846
 JU1846                          STATION DESCRIPTION
 JU1846
 JU1846'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1846'4.7 MI SW FROM CHESAPEAKE CITY.
 JU1846'ABOUT 1.7 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1846'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1846'DELAWARE CANAL AT CHESAPEAKE CITY, THENCE 3.0 MILES WEST ALONG
 JU1846'COURT HOUSE POINT ROAD, AT COURT HOUSE POINT, ABOUT IN THE
 JU1846'CENTER OF THE PATH THAT LEADS TO THE BOAT LOADING DOCK, 112.0
 JU1846'FEET SOUTH OF THE SOUTH END OF THE DOCK, 24 FEET SOUTH-SOUTHEAST
 JU1846'OF A 12-INCH SYCAMORE TREE, 16.5 FEET NORTHWEST OF THE NORTH
 JU1846'CORNER OF A 16- X 8-FOOT SHED, 138.6 FEET NORTH OF BENCH MARK Y 2,
 JU1846'ABOUT LEVEL WITH THE PATH, AND SET IN THE TOP OF A CONCRETE
 JU1846'POST THAT IS LEVEL WITH THE SURFACE OF THE GROUND.  NOTE-- THIS
 JU1846'MARK IS NOT TO BE VISITED WITHOUT OBTAINING PERMISSION FROM
 JU1846'THE PROPERTY OWNER.
 JU1846
 JU1846                          STATION RECOVERY (1984)
 JU1846
 JU1846'RECOVERY NOTE BY US POWER SQUADRON 1984
 JU1846'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6216 ***********************************************************************
 DN6216  DESIGNATION -  COURTHOUSE
 DN6216  PID         -  DN6216
 DN6216  STATE/COUNTY-  MD/CECIL
 DN6216  COUNTRY     -  US
 DN6216  USGS QUAD   -  ELKTON (2016)
 DN6216
 DN6216                         *CURRENT SURVEY CONTROL
 DN6216  ______________________________________________________________________
 DN6216* NAD 83(2011) POSITION- 39 30 31.96398(N) 075 52 17.04396(W)   ADJUSTED
 DN6216* NAD 83(2011) ELLIP HT-   -21.180 (meters)        (06/27/12)   ADJUSTED
 DN6216* NAD 83(2011) EPOCH   -  2010.00
 DN6216* NAVD 88 ORTHO HEIGHT -    12.15  (meters)       39.9   (feet) LEVELING
 DN6216  ______________________________________________________________________
 DN6216  GEOID HEIGHT    -        -33.331 (meters)                     GEOID18
 DN6216  NAD 83(2011) X  -  1,202,813.503 (meters)                     COMP
 DN6216  NAD 83(2011) Y  - -4,778,505.151 (meters)                     COMP
 DN6216  NAD 83(2011) Z  -  4,036,050.648 (meters)                     COMP
 DN6216  LAPLACE CORR    -         -1.11  (seconds)                    DEFLEC18
 DN6216  VERT ORDER      -  THIRD ?
 DN6216
 DN6216  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6216  Standards:
 DN6216         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6216            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6216  -------------------------------------------------------------------
 DN6216  NETWORK    0.49   1.04           0.22   0.18   0.53      0.02669429
 DN6216  -------------------------------------------------------------------
 DN6216  Click here for local accuracies and other accuracy information.
 DN6216
 DN6216.The horizontal coordinates were established by GPS observations
 DN6216.and adjusted by the National Geodetic Survey in June 2012.
 DN6216
 DN6216.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6216.been affixed to the stable North American tectonic plate. See 
 DN6216.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6216
 DN6216.The horizontal coordinates are valid at the epoch date displayed above
 DN6216.which is a decimal equivalence of Year/Month/Day.
 DN6216
 DN6216.The orthometric height was determined by differential leveling.
 DN6216.The vertical network tie was performed by a horz. field party for horz.
 DN6216.obs reductions. Reset procedures were used to establish the elevation.
 DN6216
 DN6216.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6216.GEOID18 height accuracy estimate available here.
 DN6216
 DN6216.Click photographs - Photos may exist for this station.
 DN6216
 DN6216.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6216
 DN6216.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6216
 DN6216.The ellipsoidal height was determined by GPS observations
 DN6216.and is referenced to NAD 83.
 DN6216
 DN6216. The following values were computed from the NAD 83(2011) position.
 DN6216
 DN6216;                    North         East     Units Scale Factor Converg.
 DN6216;SPC MD       -   205,100.688   497,060.876   MT  1.00001083   +0 42 30.0
 DN6216;SPC MD       -   672,901.17  1,630,773.89   sFT  1.00001083   +0 42 30.0
 DN6216;UTM  18      - 4,373,612.331   425,086.769   MT  0.99966909   -0 33 15.9
 DN6216
 DN6216!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6216!SPC MD       -   1.00000332  x   1.00001083  =   1.00001415
 DN6216!UTM  18      -   1.00000332  x   0.99966909  =   0.99967241
 DN6216
 DN6216_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2508673612(NAD 83)
 DN6216
 DN6216                          SUPERSEDED SURVEY CONTROL
 DN6216
 DN6216  NAD 83(2007)-  39 30 31.96411(N)    075 52 17.04461(W) AD(2002.00) 1
 DN6216  ELLIP H (02/23/12)  -21.141  (m)                       GP(2002.00) 4 1
 DN6216
 DN6216.Superseded values are not recommended for survey control.
 DN6216
 DN6216.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6216.See file dsdata.pdf to determine how the superseded data were derived.
 DN6216
 DN6216_MARKER: DD = SURVEY DISK
 DN6216_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6216_STAMPING: COURTHOUSE 2008
 DN6216_MARK LOGO: MD-015
 DN6216_PROJECTION: FLUSH
 DN6216_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6216_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6216+STABILITY: SURFACE MOTION
 DN6216_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6216+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6216
 DN6216  HISTORY     - Date     Condition        Report By
 DN6216  HISTORY     - 20081204 MONUMENTED       GWS
 DN6216
 DN6216                          STATION DESCRIPTION
 DN6216
 DN6216'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6216'THE STATION IS LOCATED ABOUT 7.0 MI (11.3 KM) SOUTH-SOUTHWEST OF
 DN6216'ELKTON, 6.9 MI (11.1 KM) NORTH-NORTHEAST OF EARLEVILLE AND 3.7 MI (6.0
 DN6216'KM) WEST-SOUTHWEST OF CHESAPEAKE CITY.
 DN6216'
 DN6216'TO REACH FROM THE JUNCTION OF MD 213 AND SHORT CUT ROAD, GO
 DN6216'WEST-NORTHWEST ON SHORT CUT ROAD FOR 1.23 MI (2.0 KM) TO A
 DN6216'T-INTERSECTION.  TURN LEFT AND GO WEST-NORTHWEST ON COURT HOUSE POINT
 DN6216'ROAD FOR 0.92 MI (1.5 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND
 DN6216'GO NORTH-NORTHEAST ON WOODSIDE DRIVE FOR 0.12 MI (0.2 KM) TO THE
 DN6216'STATION ON THE LEFT.
 DN6216'
 DN6216'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6216'CONCRETE MONUMENT, 262 FT (79.9 M) NORTH OF FOREST LANE, 4.5 FT (1.4
 DN6216'M) NORTHWEST OF THE NORTHWEST EDGE OF WOODSIDE DRIVE, 20.2 FT (6.2 M)
 DN6216'SOUTH OF THE CENTERLINE OF THE DRIVEWAY AT 37 WOODSIDE ROAD AND 78.3
 DN6216'FT (23.9 M) NORTH OF THE CENTERLINE OF THE DRIVEWAY AT 31 WOODSIDE
 DN6216'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3922 ***********************************************************************
 JU3922  DESIGNATION -  COURTHOUSE POINT LIGHT
 JU3922  PID         -  JU3922
 JU3922  STATE/COUNTY-  MD/CECIL
 JU3922  COUNTRY     -  US
 JU3922  USGS QUAD   -  NORTH EAST (2016)
 JU3922
 JU3922                         *CURRENT SURVEY CONTROL
 JU3922  ______________________________________________________________________
 JU3922* NAD 83(1991) POSITION- 39 30 48.71985(N) 075 53 05.06863(W)   ADJUSTED
 JU3922  ______________________________________________________________________
 JU3922  GEOID HEIGHT    -        -33.315 (meters)                     GEOID18
 JU3922  LAPLACE CORR    -         -1.13  (seconds)                    DEFLEC18
 JU3922  HORZ ORDER      -  THIRD
 JU3922
 JU3922.The horizontal coordinates were established by classical geodetic methods
 JU3922.and adjusted by the National Geodetic Survey in January 1992.
 JU3922
 JU3922.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3922.GEOID18 height accuracy estimate available here.
 JU3922
 JU3922.Click photographs - Photos may exist for this station.
 JU3922
 JU3922.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3922
 JU3922. The following values were computed from the NAD 83(1991) position.
 JU3922
 JU3922;                    North         East     Units Scale Factor Converg.
 JU3922;SPC MD       -   205,603.313   495,907.349   MT  1.00001173   +0 41 59.9
 JU3922;SPC MD       -   674,550.20  1,626,989.36   sFT  1.00001173   +0 41 59.9
 JU3922;UTM  18      - 4,374,140.076   423,944.989   MT  0.99967122   -0 33 46.6
 JU3922
 JU3922_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2394474140(NAD 83)
 JU3922
 JU3922                          SUPERSEDED SURVEY CONTROL
 JU3922
 JU3922  NAD 83(1986)-  39 30 48.71271(N)    075 53 05.07632(W) AD(       ) 3
 JU3922  NAD 27      -  39 30 48.31300(N)    075 53 06.29900(W) AD(       ) 3
 JU3922
 JU3922.Superseded values are not recommended for survey control.
 JU3922
 JU3922.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3922.See file dsdata.pdf to determine how the superseded data were derived.
 JU3922
 JU3922_MARKER: 14 = NAVIGATION LIGHT
 JU3922
 JU3922  HISTORY     - Date     Condition        Report By
 JU3922  HISTORY     - 1937     FIRST OBSERVED   CGS
 JU3922  HISTORY     - 1938     GOOD             CGS
 JU3922
 JU3922                          STATION DESCRIPTION
 JU3922
 JU3922'DESCRIBED BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU3922'LOCATED ON THE S SIDE OF ELK RIVER ON COURTHOUSE POINT.  IT IS ON
 JU3922'THE OUTER END OF A TIMBER BULKHEADED PIER, 9.5 METERS W OF THE
 JU3922'BULKHEAD ON THE E AND 12.4 METERS NNE OF U.S.E. MARKED STATION
 JU3922'COURT 2.  THE LIGHT IS FLASHING WHITE SET ON THE TOP OF A WOOD
 JU3922'STRUCTURE 5.8 METERS ABOVE HIGH WATER.
 JU3922
 JU3922                          STATION RECOVERY (1938)
 JU3922
 JU3922'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3922'THE LIGHT AND WOOD STRUCTURE ON WHICH THE LIGHT STOOD HAVE BEEN
 JU3922'REMOVED.  STATION WAS NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5745 ***********************************************************************
 HV5745  DESIGNATION -  COUSIN
 HV5745  PID         -  HV5745
 HV5745  STATE/COUNTY-  MD/TALBOT
 HV5745  COUNTRY     -  US
 HV5745  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5745
 HV5745                         *CURRENT SURVEY CONTROL
 HV5745  ______________________________________________________________________
 HV5745* NAD 83(1991) POSITION- 38 52 04.13838(N) 076 09 49.08116(W)   ADJUSTED
 HV5745* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5745  ______________________________________________________________________
 HV5745  GEOID HEIGHT    -        -34.267 (meters)                     GEOID18
 HV5745  LAPLACE CORR    -         -4.34  (seconds)                    DEFLEC18
 HV5745  HORZ ORDER      -  THIRD
 HV5745
 HV5745.The horizontal coordinates were established by classical geodetic methods
 HV5745.and adjusted by the National Geodetic Survey in January 1992.
 HV5745
 HV5745.The orthometric height was scaled from a topographic map.
 HV5745
 HV5745.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5745.GEOID18 height accuracy estimate available here.
 HV5745
 HV5745.Click photographs - Photos may exist for this station.
 HV5745
 HV5745.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5745
 HV5745. The following values were computed from the NAD 83(1991) position.
 HV5745
 HV5745;                    North         East     Units Scale Factor Converg.
 HV5745;SPC MD       -   133,665.144   472,581.365   MT  0.99994986   +0 31 29.8
 HV5745;SPC MD       -   438,533.06  1,550,460.70   sFT  0.99994986   +0 31 29.8
 HV5745;UTM  18      - 4,302,751.503   399,050.221   MT  0.99972549   -0 43 49.0
 HV5745
 HV5745!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5745!SPC MD       -   1.00000510  x   0.99994986  =   0.99995496
 HV5745!UTM  18      -   1.00000510  x   0.99972549  =   0.99973059
 HV5745
 HV5745:                Primary Azimuth Mark                     Grid Az
 HV5745:SPC MD       -  LLOYD                                    215 35 18.1
 HV5745:UTM  18      -  LLOYD                                    216 50 36.9
 HV5745
 HV5745_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9905002751(NAD 83)
 HV5745
 HV5745|---------------------------------------------------------------------|
 HV5745| PID    Reference Object                     Distance      Geod. Az  |
 HV5745|                                                           dddmmss.s |
 HV5745| HV5682 LLOYD                               APPROX. 0.9 KM 2160647.9 |
 HV5745| HV5741 BALDWINS                            415.687 METERS 3344722.7 |
 HV5745|---------------------------------------------------------------------|
 HV5745
 HV5745                          SUPERSEDED SURVEY CONTROL
 HV5745
 HV5745  NAD 83(1986)-  38 52 04.13382(N)    076 09 49.09433(W) AD(       ) 3
 HV5745  NAD 27      -  38 52 03.69300(N)    076 09 50.27900(W) AD(       ) 3
 HV5745  USSD        -  38 52 04.08600(N)    076 09 50.05100(W) AD(       ) 3
 HV5745
 HV5745.Superseded values are not recommended for survey control.
 HV5745
 HV5745.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5745.See file dsdata.pdf to determine how the superseded data were derived.
 HV5745
 HV5745_MARKER: H = DRILL HOLE
 HV5745_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5745_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5745
 HV5745  HISTORY     - Date     Condition        Report By
 HV5745  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5745  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5745
 HV5745                          STATION DESCRIPTION
 HV5745
 HV5745'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5745'STATION IS ON THE SOUTHEASTERN SHORE OF THE BRANCH OF WYE RIVER
 HV5745'BOUNDING WYE ISLAND ON THE S, ABOUT 1-1/2 MILES ENE OF N END OF
 HV5745'BRUFFS ISLAND, AND AT NORTHEASTERN SIDE OF ENTRANCE TO LLOYD
 HV5745'CREEK, IN A PASTURE, ABOUT 9 FEET ABOVE HIGH WATER, 25 YARDS E OF
 HV5745'EDGE OF BANK, 65 YARDS SSE OF A SMALL CLUMP OF TREES IN BOTTOM
 HV5745'LAND, 65 YARDS N OF TREES, 60 YARDS N OF EDGE OF A FIELD, AND 200
 HV5745'YARDS S OF A HOUSE.  STATION IS MARKED BY A HOLE IN THE CENTER OF
 HV5745'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV5745'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV5745'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5745'TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE,
 HV5745'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HV5745'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV5745'FOLLOWS--LEFT PEAK OF BELL CUPOLA, 1 MILE, S 9 DEG 41 MIN W.
 HV5745'WINDMILL, 1 MILE, S 10 DEG 26 MIN W.  SPINDLE ON BARN CUPOLA, 2
 HV5745'MILES, S 44 DEG 12 MIN W. FRONT PEAK OF BOATHOUSE, 1-1/2 MILES, S
 HV5745'62 DEG 12 MIN W.  LEFT PEAK OF HOUSE, 1-1/8 MILES, N 80 DEG 40
 HV5745'MIN W.  CHIMNEY OF HOUSE, 3/4 MILE, N 52 DEG 22 MIN W.  PEAK OF
 HV5745'NEAR GABLE OF BALDWIN HOUSE, 200 YARDS, N 8 DEG 11 MIN W.
 HV5745'WINDMILL ON LARGE BARN, 1/4 MILE, N 43 DEG 15 MIN E.  RIGHT PEAK
 HV5745'OF HOUSE, 350 YARDS, N 65 DEG 51 MIN E.
 HV5745
 HV5745                          STATION RECOVERY (1940)
 HV5745
 HV5745'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5745'STATION MARK SEARCHED FOR BUT NOT FOUND.  ORIENTATION SEEMS TO
 HV5745'INDICATE THAT MARK WAS LOCATED IN FIELD WHICH HAS BEEN UNDER
 HV5745'CULTIVATION AND THAT MARK WAS PROBABLY PLOWED OUT.
 HV5745'
 HV5745'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7184 ***********************************************************************
 HV7184  DESIGNATION -  COVE
 HV7184  PID         -  HV7184
 HV7184  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7184  COUNTRY     -  US
 HV7184  USGS QUAD   -  DEALE (2016)
 HV7184
 HV7184                         *CURRENT SURVEY CONTROL
 HV7184  ______________________________________________________________________
 HV7184* NAD 83(1991) POSITION- 38 51 01.57502(N) 076 31 43.97726(W)   ADJUSTED
 HV7184* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7184  ______________________________________________________________________
 HV7184  GEOID HEIGHT    -        -33.467 (meters)                     GEOID18
 HV7184  LAPLACE CORR    -         -3.62  (seconds)                    DEFLEC18
 HV7184  HORZ ORDER      -  THIRD
 HV7184
 HV7184.The horizontal coordinates were established by classical geodetic methods
 HV7184.and adjusted by the National Geodetic Survey in January 1992.
 HV7184
 HV7184.The orthometric height was scaled from a topographic map.
 HV7184
 HV7184.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7184.GEOID18 height accuracy estimate available here.
 HV7184
 HV7184.Click photographs - Photos may exist for this station.
 HV7184
 HV7184.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7184
 HV7184. The following values were computed from the NAD 83(1991) position.
 HV7184
 HV7184;                    North         East     Units Scale Factor Converg.
 HV7184;SPC MD       -   131,509.015   440,894.758   MT  0.99994995   +0 17 44.5
 HV7184;SPC MD       -   431,459.16  1,446,502.22   sFT  0.99994995   +0 17 44.5
 HV7184;UTM  18      - 4,301,290.191   367,329.727   MT  0.99981674   -0 57 33.1
 HV7184
 HV7184!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7184!SPC MD       -   1.00000529  x   0.99994995  =   0.99995524
 HV7184!UTM  18      -   1.00000529  x   0.99981674  =   0.99982203
 HV7184
 HV7184:                Primary Azimuth Mark                     Grid Az
 HV7184:SPC MD       -  SHELL                                    271 37 34.3
 HV7184:UTM  18      -  SHELL                                    272 52 51.9
 HV7184
 HV7184_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6732901290(NAD 83)
 HV7184
 HV7184|---------------------------------------------------------------------|
 HV7184| PID    Reference Object                     Distance      Geod. Az  |
 HV7184|                                                           dddmmss.s |
 HV7184| CX2654 COVE RP                               5.410 METERS 03810     |
 HV7184| HV7186 SHELL                               APPROX. 0.7 KM 2715518.8 |
 HV7184|---------------------------------------------------------------------|
 HV7184
 HV7184                          SUPERSEDED SURVEY CONTROL
 HV7184
 HV7184  NAD 83(1986)-  38 51 01.57220(N)    076 31 43.98930(W) AD(       ) 3
 HV7184  NAD 27      -  38 51 01.17700(N)    076 31 45.13100(W) AD(       ) 3
 HV7184  USSD        -  38 51 01.54000(N)    076 31 44.94800(W) AD(       ) 3
 HV7184
 HV7184.Superseded values are not recommended for survey control.
 HV7184
 HV7184.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7184.See file dsdata.pdf to determine how the superseded data were derived.
 HV7184
 HV7184_MARKER: N = NAIL
 HV7184_SETTING: 0 = UNSPECIFIED SETTING
 HV7184
 HV7184  HISTORY     - Date     Condition        Report By
 HV7184  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7184  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV7184
 HV7184                          STATION DESCRIPTION
 HV7184
 HV7184'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7184'ON THE S SHORE OF WEST RIVER, ABOUT 3/4 MILE NE OF GROUND.
 HV7184'GALESVILLE, ON CEDAR POINT, A LOW NARROW NECK OF LAND, ABOUT 125
 HV7184'YARDS FROM ITS EXTREME S END.  STATION IS ABOUT 6 INCHES ABOVE
 HV7184'HIGH-WATER MARK AND 5 YARDS W OF A BLAZED CEDAR STUMP.
 HV7184'
 HV7184'STATION MARK IS NAIL IN PINE STUB FLUSH WITH GROUND.
 HV7184'
 HV7184'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7184'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7184'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7184'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7184'IS 5.41 METERS (17.75 FEET) FROM STATION IN BEARING N 38 DEG 10
 HV7184'MIN E. DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV7184'REFERENCE ARE AS FOLLOWS--NW CORNER OF HARTGE WHARF HOUSE, 350
 HV7184'YARDS, S 3 DEG 47 MIN W.  LERCHS WINDMILL, 1 MILE, S 5 DEG 27
 HV7184'MIN W.  SW CORNER OF SMALL SHANTY ON OPPOSITE SHORE, 3/4 MILE, N 4
 HV7184'DEG 41 MIN E.  CHIMNEY ON WHITE HOUSE ON OPPOSITE SHORE, 1 MILE,
 HV7184'N 23 DEG 42 MIN E.  NAIL IN BLAZE IN 15-INCH CEDAR STUMP, 4.60
 HV7184'METERS (15.09 FEET), N 63 DEG 4 MIN E.
 HV7184
 HV7184                          STATION RECOVERY (1942)
 HV7184
 HV7184'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7184'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HV7184'DESCRIPTION--
 HV7184'
 HV7184'(1) STATION MARK NOW PROJECTS 1 FOOT ABOVE THE GROUND.
 HV7184'
 HV7184'(2) WITNESS TREES MENTIONED HAVE BEEN CUT.
 HV7184'
 HV7184'THE STATION IS LOCATED ON THE WESTERN SHORE OF HOOPER ISLAND
 HV7184'ABOUT 20 FEET E OF THE SHORELINE OF CHESAPEAKE BAY AND ALMOST
 HV7184'DIRECTLY E OF HOOPER ISLAND LIGHTHOUSE.  A LINE DRAWN FROM THE
 HV7184'STATION TO THE LIGHTHOUSE WOULD PASS BETWEEN TWO SMALL ISLANDS,
 HV7184'KNOWN AS SWAN ISLANDS, THE SOUTHERN ONE OF THE TWO BEING UNDER
 HV7184'WATER AT HIGH TIDE.  THESE ISLANDS LIE ABOUT 600 FEET W OF THE
 HV7184'STATION.
 HV7184'
 HV7184'THE STATION IS MARKED BY A NAIL DRIVEN INTO THE CENTER OF A 4-INCH
 HV7184'PINE STUB, WHICH EXTENDS A FOOT ABOVE THE SURFACE OF THE GROUND.
 HV7184'THE STATION IS IN POOR CONDITION, BECAUSE THE STUB IS LOOSELY SET
 HV7184'IN THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6746 ***********************************************************************
 HV6746  DESIGNATION -  COVE POINT LIGHTHOUSE
 HV6746  PID         -  HV6746
 HV6746  STATE/COUNTY-  MD/CALVERT
 HV6746  COUNTRY     -  US
 HV6746  USGS QUAD   -  COVE POINT (2016)
 HV6746
 HV6746                         *CURRENT SURVEY CONTROL
 HV6746  ______________________________________________________________________
 HV6746* NAD 83(1991) POSITION- 38 23 10.45062(N) 076 22 54.34632(W)   ADJUSTED
 HV6746* NAVD 88 ORTHO HEIGHT -    16.    (meters)       52.    (feet) SCALED
 HV6746  ______________________________________________________________________
 HV6746  GEOID HEIGHT    -        -34.493 (meters)                     GEOID18
 HV6746  LAPLACE CORR    -         -4.74  (seconds)                    DEFLEC18
 HV6746  HORZ ORDER      -  THIRD
 HV6746
 HV6746.The horizontal coordinates were established by classical geodetic methods
 HV6746.and adjusted by the National Geodetic Survey in January 1992.
 HV6746
 HV6746.The orthometric height was scaled from a topographic map.
 HV6746
 HV6746.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6746.GEOID18 height accuracy estimate available here.
 HV6746
 HV6746.Click photographs - Photos may exist for this station.
 HV6746
 HV6746.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6746
 HV6746. The following values were computed from the NAD 83(1991) position.
 HV6746
 HV6746;                    North         East     Units Scale Factor Converg.
 HV6746;SPC MD       -    80,058.173   454,014.092   MT  0.99998612   +0 23 16.9
 HV6746;SPC MD       -   262,657.52  1,489,544.57   sFT  0.99998612   +0 23 16.9
 HV6746;UTM  18      - 4,249,573.847   379,321.238   MT  0.99977935   -0 51 29.2
 HV6746
 HV6746!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6746!SPC MD       -   1.00000294  x   0.99998612  =   0.99998906
 HV6746!UTM  18      -   1.00000294  x   0.99977935  =   0.99978229
 HV6746
 HV6746:                Primary Azimuth Mark                     Grid Az
 HV6746:SPC MD       -  FLAG POND 1897                           317 43 04.7
 HV6746:UTM  18      -  FLAG POND 1897                           318 57 50.8
 HV6746
 HV6746_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7932149573(NAD 83)
 HV6746
 HV6746|---------------------------------------------------------------------|
 HV6746| PID    Reference Object                     Distance      Geod. Az  |
 HV6746|                                                           dddmmss.s |
 HV6746| HV6749 FLAG POND 1897                      APPROX.10.1 KM 3180621.6 |
 HV6746|---------------------------------------------------------------------|
 HV6746
 HV6746                          SUPERSEDED SURVEY CONTROL
 HV6746
 HV6746  NAD 83(1986)-  38 23 10.45005(N)    076 22 54.36184(W) AD(       ) 3
 HV6746  NAD 27      -  38 23 10.00900(N)    076 22 55.54300(W) AD(       ) 3
 HV6746  USBS        -  38 23 06.60000(N)    076 22 36.40000(W) AD(       ) 3
 HV6746  USSD        -  38 23 10.37900(N)    076 22 55.31000(W) AD(       ) 3
 HV6746
 HV6746.Superseded values are not recommended for survey control.
 HV6746
 HV6746.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6746.See file dsdata.pdf to determine how the superseded data were derived.
 HV6746
 HV6746_MARKER: 13 = LIGHTHOUSE
 HV6746_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV6746+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2011
 HV6746
 HV6746  HISTORY     - Date     Condition        Report By
 HV6746  HISTORY     - 1848     FIRST OBSERVED   COASUR
 HV6746  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6746  HISTORY     - 1955     GOOD             USACE
 HV6746  HISTORY     - 1960     GOOD             CGS
 HV6746  HISTORY     - 1987     GOOD             NOS
 HV6746  HISTORY     - 20110731 GOOD             GEOCAC
 HV6746
 HV6746                          STATION DESCRIPTION
 HV6746
 HV6746'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6746'THIS INTERSECTION STATION IS THE COVE POINT LIGHTHOUSE WHICH IS
 HV6746'ALSO A MARINE RADIO BEACON.  IT IS LOCATED ON THE VERY TIP OF
 HV6746'COVE POINT.  THE BEACON IS ON THE TOP OF THE U.S. COAST GUARD
 HV6746'STATION BUILDING.  THE CENTER OF THE LIGHT WAS THE POINT OBSERVED
 HV6746'UPON.  THE STATION WAS NOT VISITED.
 HV6746
 HV6746                          STATION RECOVERY (1955)
 HV6746
 HV6746'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1955
 HV6746'THE STATION WAS VISITED AND FOUND TO BE IN GOOD CONDITION.  THE
 HV6746'PRESENT LIGHTKEEPER IS MR. SOMERS WHO LIVES AT THE STATION IN A
 HV6746'DWELLING SEPARATE FROM THE TOWER.
 HV6746'
 HV6746'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 2 AND 231
 HV6746'AT PRINCE FREDERICK, GO S ON STATE HIGHWAY 2 FOR ABOUT 15.2 MI. TO
 HV6746'BERTHA AT FORKS OF HIGHWAY 497 TO THE LEFT (E), FOLLOW HIGHWAY
 HV6746'497 FOR ABOUT 3.2 MI. TO THE END OF THE ROAD AT THE LIGHTHOUSE.
 HV6746
 HV6746                          STATION RECOVERY (1960)
 HV6746
 HV6746'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6746'THE LIGHTHOUSE WAS RECOVERED IN GOOD CONDITION.  A PREVIOUS
 HV6746'DESCRIPTION WAS NOT AVAILABLE SO THE CENTER OF THE LIGHT WAS
 HV6746'ASSUMED TO BE THE STATION.  THE LIGHTHOUSE IS LOCATED ON THE
 HV6746'U.S. COAST GUARD PROPERTY AT COVE POINT.  IT IS A WHITE
 HV6746'CYLINDRICAL TOWER WITH THE LIGHT STRUCTURE AND ROOF PAINTED BLACK.
 HV6746'THE LIGHTHOUSE WAS BUILT IN 1828 AND HAS NOT BEEN
 HV6746'DISTURBED SINCE.
 HV6746
 HV6746                          STATION RECOVERY (1987)
 HV6746
 HV6746'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1987 (REM)
 HV6746'THE STATION WAS RECOVERED AT THIS DATE.
 HV6746'STATION  RECOVERED IN GOOD CONDITION.
 HV6746'
 HV6746'HEIGHT OF LIGHT SHOWN WAS 1.500 METERS ABOVE THE MARK.
 HV6746'
 HV6746'PUBLISHED DESCRIPTION IS ADEQUATE.
 HV6746
 HV6746                          STATION RECOVERY (2011)
 HV6746
 HV6746'RECOVERY NOTE BY GEOCACHING 2011 (DPB)
 HV6746'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0379 ***********************************************************************
 HV0379  TIDAL BM    -  This is a Tidal Bench Mark.
 HV0379  DESIGNATION -  COVE USN
 HV0379  PID         -  HV0379
 HV0379  STATE/COUNTY-  MD/CALVERT
 HV0379  COUNTRY     -  US
 HV0379  USGS QUAD   -  COVE POINT (2016)
 HV0379
 HV0379                         *CURRENT SURVEY CONTROL
 HV0379  ______________________________________________________________________
 HV0379* NAD 83(1986) POSITION- 38 23 09.48   (N) 076 22 54.82   (W)   HD_HELD1
 HV0379* NAVD 88 ORTHO HEIGHT -     1.061 (meters)        3.48  (feet) ADJUSTED
 HV0379  ______________________________________________________________________
 HV0379  GEOID HEIGHT    -        -34.493 (meters)                     GEOID18
 HV0379  DYNAMIC HEIGHT  -          1.060 (meters)        3.48  (feet) COMP
 HV0379  MODELED GRAVITY -    980,023.1   (mgal)                       NAVD 88
 HV0379
 HV0379  VERT ORDER      -  FIRST     CLASS II
 HV0379
 HV0379.The horizontal coordinates were determined by differentially corrected
 HV0379.hand held GPS observations or other comparable positioning techniques
 HV0379.and have an estimated accuracy of +/- 3 meters.
 HV0379
 HV0379.The orthometric height was determined by differential leveling and
 HV0379.adjusted by the NATIONAL GEODETIC SURVEY
 HV0379.in June 1991.
 HV0379
 HV0379.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0379.GEOID18 height accuracy estimate available here.
 HV0379
 HV0379.This Tidal Bench Mark is designated as VM 3214
 HV0379.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0379
 HV0379.Click photographs - Photos may exist for this station.
 HV0379
 HV0379.The dynamic height is computed by dividing the NAVD 88
 HV0379.geopotential number by the normal gravity value computed on the
 HV0379.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0379.degrees latitude (g = 980.6199 gals.).
 HV0379
 HV0379.The modeled gravity was interpolated from observed gravity values.
 HV0379
 HV0379;                    North         East    Units  Estimated Accuracy
 HV0379;SPC MD       -    80,028.2     454,002.8     MT  (+/- 3 meters HH1 GPS) 
 HV0379
 HV0379_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7930949544(NAD 83)
 HV0379
 HV0379                          SUPERSEDED SURVEY CONTROL
 HV0379
 HV0379  NGVD 29 (11/26/84)    1.306  (m)            4.28   (f) ADJUSTED    1 2
 HV0379
 HV0379.Superseded values are not recommended for survey control.
 HV0379
 HV0379.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0379.See file dsdata.pdf to determine how the superseded data were derived.
 HV0379
 HV0379_MARKER: DD = SURVEY DISK
 HV0379_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0379_SP_SET: FLAGPOLE BASE
 HV0379_STAMPING: COVE BM
 HV0379_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0379_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0379+SATELLITE: SATELLITE OBSERVATIONS - November 13, 2013
 HV0379
 HV0379  HISTORY     - Date     Condition        Report By
 HV0379  HISTORY     - UNK      MONUMENTED       USN
 HV0379  HISTORY     - 1971     GOOD             NGS
 HV0379  HISTORY     - 20100807 GOOD             GEOCAC
 HV0379  HISTORY     - 20131113 GOOD             MDDNR
 HV0379
 HV0379                          STATION DESCRIPTION
 HV0379
 HV0379'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0379'AT COVE POINT.
 HV0379'AT COVE POINT, AT THE U.S. COAST GUARD, AT THE EAST END OF
 HV0379'STATE HIGHWAY 497, (LIGHTHOUSE BLVD), SET IN THE TOP OF AND
 HV0379'1.5 FEET SOUTHWEST OF THE NORTHEAST CORNER OF THE CONCRETE BASE
 HV0379'FOR THE NORTHEAST LEG OF THE FLAGPOLE BASE, 38.8 FEET WEST OF
 HV0379'THE NORTHWEST CORNER OF THE COAST GUARD OFFICE BLDG. AND 4
 HV0379'INCHES ABOVE THE LEVEL OF THE SIDEWALK.
 HV0379
 HV0379                          STATION RECOVERY (2010)
 HV0379
 HV0379'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 HV0379'RECOVERED IN GOOD CONDITION. STATION DISK IS IN OLD FOUNDATION WHICH
 HV0379'IS PAINTED OVER. STATION DISK IS IN THE FOUNDATION WHICH IS CLOSEST TO
 HV0379'LIGHTHOUSE.
 HV0379
 HV0379                          STATION RECOVERY (2013)
 HV0379
 HV0379'RECOVERY NOTE BY MD DEPT OF NAT RES 2013 (LCW)
 HV0379'RECOVERED FLUSH IN NE'LY OF 4 BASE PADS FOR OLD TOWER (PADS ARE 3'X3'
 HV0379'AND HAVE BEEN PAINTED GRAY) THAT SURROUND FLAGPOLE.
 HV0379'
 HV0379'MARK IS ON THE FORMER COAST GUARD STATION AT COVE POINT WITH LOCKED
 HV0379'GATE. THE SITE IS NOW OWNED AND MANAGED BY THE CALVERT MARITIME MUSEUM
 HV0379'AS A VACATION RENTAL SITE. DEPENDING ON THE TIME OF THE YEAR ACCESS
 HV0379'MAY BE LIMITED, BUT CAN BE ARRANGED THROUGH THE MUSEUM 410-474-5370
 HV0379'(RENTAL COORDINATOR) OR 410-326-2042 (MUSEUM OFFICE).
 HV0379'
 HV0379'MARK IS A US NAVY HYDROGRAPHIC OFFICE DISC STAMPED COVE BM FLUSH IN
 HV0379'NE'LY OF 4 CONCRETE PADS FOR OLD TOWER (REMOVED) BETWEEN FRAME
 HV0379'ENLISTED QUARTERS AND FOG SIGNAL BUILDING.
 HV0379'19.63M 000 DEG MAG TO SW CORNER 2 STY KEEPERS HOUSE. 13.83M 103 DEG
 HV0379'MAG TO SW CORNER BRICK GENERATOR/FOG SIGNAL BUILDING. 21.99M 145 DEG
 HV0379'MAG TO W POST OF GATE TO BEACH. 14.87M 255 DEG MAG TO SE CORNER FRAME
 HV0379'ENLISTED QUARTERS. 37.94M 345 DEG MAG TO WELL CASING N OF KEEPERS
 HV0379'HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1959 ***********************************************************************
 HU1959  DESIGNATION -  COW
 HU1959  PID         -  HU1959
 HU1959  STATE/COUNTY-  MD/DORCHESTER
 HU1959  COUNTRY     -  US
 HU1959  USGS QUAD   -  NANTICOKE (2016)
 HU1959
 HU1959                         *CURRENT SURVEY CONTROL
 HU1959  ______________________________________________________________________
 HU1959* NAD 83(1991) POSITION- 38 16 01.98549(N) 075 56 39.02204(W)   ADJUSTED
 HU1959* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1959  ______________________________________________________________________
 HU1959  GEOID HEIGHT    -        -35.654 (meters)                     GEOID18
 HU1959  LAPLACE CORR    -         -3.15  (seconds)                    DEFLEC18
 HU1959  HORZ ORDER      -  THIRD
 HU1959
 HU1959.The horizontal coordinates were established by classical geodetic methods
 HU1959.and adjusted by the National Geodetic Survey in January 1992.
 HU1959
 HU1959.The orthometric height was scaled from a topographic map.
 HU1959
 HU1959.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1959.GEOID18 height accuracy estimate available here.
 HU1959
 HU1959.Click photographs - Photos may exist for this station.
 HU1959
 HU1959.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1959
 HU1959. The following values were computed from the NAD 83(1991) position.
 HU1959
 HU1959;                    North         East     Units Scale Factor Converg.
 HU1959;SPC MD       -    67,198.332   492,396.872   MT  1.00000586   +0 39 45.6
 HU1959;SPC MD       -   220,466.53  1,615,472.07   sFT  1.00000586   +0 39 45.6
 HU1959;UTM  18      - 4,235,885.609   417,404.972   MT  0.99968401   -0 35 05.2
 HU1959
 HU1959!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1959!SPC MD       -   1.00000563  x   1.00000586  =   1.00001149
 HU1959!UTM  18      -   1.00000563  x   0.99968401  =   0.99968964
 HU1959
 HU1959:                Primary Azimuth Mark                     Grid Az
 HU1959:SPC MD       -  FROG                                     185 32 54.6
 HU1959:UTM  18      -  FROG                                     186 47 45.4
 HU1959
 HU1959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1740435885(NAD 83)
 HU1959
 HU1959|---------------------------------------------------------------------|
 HU1959| PID    Reference Object                     Distance      Geod. Az  |
 HU1959|                                                           dddmmss.s |
 HU1959| HU1947 NANTICOKE CHURCH SPIRE              APPROX. 3.3 KM 0843901.0 |
 HU1959| HU1891 FROG                                APPROX. 3.4 KM 1861240.2 |
 HU1959| DC7971 COW RM                                8.680 METERS 31532     |
 HU1959|---------------------------------------------------------------------|
 HU1959
 HU1959                          SUPERSEDED SURVEY CONTROL
 HU1959
 HU1959  NAD 83(1986)-  38 16 01.98431(N)    075 56 39.04259(W) AD(       ) 3
 HU1959  NAD 27      -  38 16 01.54400(N)    075 56 40.27600(W) AD(       ) 3
 HU1959  USSD        -  38 16 01.93700(N)    075 56 40.02700(W) AD(       ) 3
 HU1959
 HU1959.Superseded values are not recommended for survey control.
 HU1959
 HU1959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1959.See file dsdata.pdf to determine how the superseded data were derived.
 HU1959
 HU1959_MARKER: N = NAIL
 HU1959_SETTING: 0 = UNSPECIFIED SETTING
 HU1959
 HU1959  HISTORY     - Date     Condition        Report By
 HU1959  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1959  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1959
 HU1959                          STATION DESCRIPTION
 HU1959
 HU1959'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1959'STATION IS ON THE WESTERN SHORE OF NANTICOKE RIVER, ON MINK POINT,
 HU1959'ABOUT 3/8 MILE E OF ENTRANCE TO COW CREEK AND 1-3/8 MILES W OF
 HU1959'ROARING POINT, ON VERY SOFT MARSH AT EDGE OF WATER BUSHES ABOUT 5
 HU1959'YARDS W OF SHORE, 15 YARDS NE OF SHORE, AND 15 YARDS NW OF EXTREME
 HU1959'END OF POINT.  STATION MARK IS NAIL IN PINE STUB FLUSH WITH
 HU1959'GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HU1959'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HU1959'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HU1959'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HU1959'COUNTER-SUNK IN TOP OF POST.  IT IS 8.68 METERS (28.48 FEET) FROM
 HU1959'STATION N 44 DEG 38 MIN W.  OTHER DISTANCES AND BEARINGS
 HU1959'ARE AS FOLLOWS--A SHANTY, 3/4 MILE, S 43 DEG 29 MIN W.  SHANTY, 1
 HU1959'MILE, N 16 DEG 06 MIN E. SHANTY, 1/2 MILE, N 36 DEG 05 MIN E.  TANGENT
 HU1959'OF LAND, 1/2 MILE, N 43 DEG 56 MIN E.  LARGE HOUSE, 2-1/2 MILES,
 HU1959'N 63 DEG 01 MIN E.  WINDMILL, 2-3/4 MILES, N 70 DEG 05 MIN E.
 HU1959'CHIMNEY OF LARGE HOUSE, 2-1/4 MILES, N 80 DEG 37 MIN E.  CANNING HOUSE
 HU1959'STACK, 1-3/4 MILES, N 83 DEG 41 MIN E.  CANNING HOUSE STACK, 1-1/2
 HU1959'MILES, S 78 DEG 21 MIN E.  NEAR CORNER OF NANTICOKE WHARF, 1-1/2
 HU1959'MILES, S 68 DEG 58 MIN E. LARGE HOUSE, 2-1/2 MILES, S 56 DEG 15 MIN E.
 HU1959'LARGE HOUSE, 2-1/2 MILES, S 54 DEG 23 MIN E.
 HU1959
 HU1959                          STATION RECOVERY (1942)
 HU1959
 HU1959'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1959'THIS STATION WAS SEARCHED FOR BUT NOT FOUND.  THE SHORELINE SHOWS
 HU1959'EVIDENCE OF CHANGE AND THE STATION IS PROBABLY WASHED AWAY.
 HU1959'
 HU1959'IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1871 ***********************************************************************
 HU1871  DESIGNATION -  COX
 HU1871  PID         -  HU1871
 HU1871  STATE/COUNTY-  MD/SOMERSET
 HU1871  COUNTRY     -  US
 HU1871  USGS QUAD   -  MONIE (2016)
 HU1871
 HU1871                         *CURRENT SURVEY CONTROL
 HU1871  ______________________________________________________________________
 HU1871* NAD 83(1993) POSITION- 38 08 46.00236(N) 075 47 17.43560(W)   ADJUSTED
 HU1871* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1871  ______________________________________________________________________
 HU1871  GEOID HEIGHT    -        -35.978 (meters)                     GEOID18
 HU1871  LAPLACE CORR    -         -1.85  (seconds)                    DEFLEC18
 HU1871  HORZ ORDER      -  THIRD
 HU1871
 HU1871.The horizontal coordinates were established by classical geodetic methods
 HU1871.and adjusted by the National Geodetic Survey in November 1994.
 HU1871
 HU1871.The orthometric height was scaled from a topographic map.
 HU1871
 HU1871.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1871.GEOID18 height accuracy estimate available here.
 HU1871
 HU1871.Click photographs - Photos may exist for this station.
 HU1871
 HU1871.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1871
 HU1871. The following values were computed from the NAD 83(1993) position.
 HU1871
 HU1871;                    North         East     Units Scale Factor Converg.
 HU1871;SPC MD       -    53,925.971   506,226.011   MT  1.00003033   +0 45 38.1
 HU1871;SPC MD       -   176,922.12  1,660,843.17   sFT  1.00003033   +0 45 38.1
 HU1871;UTM  18      - 4,222,320.044   430,937.206   MT  0.99965874   -0 29 12.7
 HU1871
 HU1871!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1871!SPC MD       -   1.00000569  x   1.00003033  =   1.00003602
 HU1871!UTM  18      -   1.00000569  x   0.99965874  =   0.99966442
 HU1871
 HU1871:                Primary Azimuth Mark                     Grid Az
 HU1871:SPC MD       -  GREEN                                    168 56 50.4
 HU1871:UTM  18      -  GREEN                                    170 11 41.2
 HU1871
 HU1871_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3093722320(NAD 83)
 HU1871
 HU1871|---------------------------------------------------------------------|
 HU1871| PID    Reference Object                     Distance      Geod. Az  |
 HU1871|                                                           dddmmss.s |
 HU1871| HU1872 GREEN                               APPROX. 0.5 KM 1694228.5 |
 HU1871|---------------------------------------------------------------------|
 HU1871
 HU1871                          SUPERSEDED SURVEY CONTROL
 HU1871
 HU1871  NAD 83(1991)-  38 08 45.99952(N)    075 47 17.43451(W) AD(       ) 3
 HU1871  NAD 83(1986)-  38 08 45.99890(N)    075 47 17.46089(W) AD(       ) 3
 HU1871  NAD 27      -  38 08 45.55100(N)    075 47 18.68400(W) AD(       ) 3
 HU1871  USSD        -  38 08 45.90900(N)    075 47 18.42600(W) AD(       ) 3
 HU1871
 HU1871.Superseded values are not recommended for survey control.
 HU1871
 HU1871.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1871.See file dsdata.pdf to determine how the superseded data were derived.
 HU1871
 HU1871_MARKER: H = DRILL HOLE
 HU1871_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1871_STAMPING: M.S.F.C. U.S.C.S.
 HU1871_MARK LOGO: MDSFC
 HU1871_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1871+STABILITY: SURFACE MOTION
 HU1871
 HU1871  HISTORY     - Date     Condition        Report By
 HU1871  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1871  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HU1871
 HU1871                          STATION DESCRIPTION
 HU1871
 HU1871'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1871'STATION IS ON THE EASTERN SHORE OF THE UPPER PART OF MANOKIN
 HU1871'RIVER, ON A MARSH POINT ABOUT 3/4 MILE N OF ENTRANCE TO BACK
 HU1871'CREEK, ABOUT 15 YARDS E AND 10 YARDS S OF HIGH-WATER MARK.  A
 HU1871'SMALL BUILDING STANDS IN THE WATER ABOUT 20 FEET FROM BANK TO
 HU1871'NE OF STATION, AND BENNETTS OYSTER WATCH HOUSE IS ABOUT 15 YARDS
 HU1871'E OF STATION.  STATION MARK IS A HOLE IN THE CENTER OF THE TOP
 HU1871'OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HU1871'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HU1871'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HU1871'COUNTER-SUNK IN TOP OF POST.  DISTANCES AND BEARINGS TO
 HU1871'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY OF
 HU1871'WHITE HOUSE, 3/4 MILE, N 52 DEG 59 MIN W.  W CORNER OF ROOF
 HU1871'OF BRICK HOUSE ON OPPOSITE SHORE, 3/4 MILE, N 12 DEG 53 MIN W.
 HU1871'CABIN, 1/8 MILE, N 25 DEG 07 MIN E.  LEFT CORNER OF WATCH
 HU1871'HOUSE, 17.20 METERS (56.4 FEET), S 77 DEG 41 MIN E.  NEAR CORNER
 HU1871'OF WATCH HOUSE, 14.13 METERS (46.4 FEET), S 69 DEG 28 MIN E.
 HU1871
 HU1871                          STATION RECOVERY (1942)
 HU1871
 HU1871'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1871'THIS STATION HAS BEEN DESTROYED.
 HU1871'
 HU1871'BOTH THE SMALL BUILDING AND BENNETTS OYSTER WATCH HOUSE, REFERRED
 HU1871'TO IN THE ORIGINAL DESCRIPTION ARE GONE, BUT BY CHECKING THE
 HU1871'LOCAL DETAIL AND MEASURING FROM WHERE THE OYSTER HOUSE STOOD, THE
 HU1871'HOLE IN WHICH STATION COX WAS LOCATED WAS FOUND, BUT THE MARK
 HU1871'ITSELF HAD BEEN DUG OUT AND DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6196 ***********************************************************************
 HV6196  DESIGNATION -  COX
 HV6196  PID         -  HV6196
 HV6196  STATE/COUNTY-  MD/QUEEN ANNES
 HV6196  COUNTRY     -  US
 HV6196  USGS QUAD   -  KENT ISLAND (2016)
 HV6196
 HV6196                         *CURRENT SURVEY CONTROL
 HV6196  ______________________________________________________________________
 HV6196* NAD 83(1991) POSITION- 38 54 37.61962(N) 076 17 38.49568(W)   ADJUSTED
 HV6196* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6196  ______________________________________________________________________
 HV6196  GEOID HEIGHT    -        -33.819 (meters)                     GEOID18
 HV6196  LAPLACE CORR    -         -4.41  (seconds)                    DEFLEC18
 HV6196  HORZ ORDER      -  THIRD
 HV6196
 HV6196.The horizontal coordinates were established by classical geodetic methods
 HV6196.and adjusted by the National Geodetic Survey in January 1992.
 HV6196
 HV6196.The orthometric height was scaled from a topographic map.
 HV6196
 HV6196.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6196.GEOID18 height accuracy estimate available here.
 HV6196
 HV6196.Click photographs - Photos may exist for this station.
 HV6196
 HV6196.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6196
 HV6196. The following values were computed from the NAD 83(1991) position.
 HV6196
 HV6196;                    North         East     Units Scale Factor Converg.
 HV6196;SPC MD       -   138,302.082   461,229.282   MT  0.99995003   +0 26 35.1
 HV6196;SPC MD       -   453,746.08  1,513,216.40   sFT  0.99995003   +0 26 35.1
 HV6196;UTM  18      - 4,307,635.051   387,804.829   MT  0.99975500   -0 48 46.3
 HV6196
 HV6196!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6196!SPC MD       -   1.00000534  x   0.99995003  =   0.99995537
 HV6196!UTM  18      -   1.00000534  x   0.99975500  =   0.99976034
 HV6196
 HV6196:                Primary Azimuth Mark                     Grid Az
 HV6196:SPC MD       -  TULL                                     012 07 45.1
 HV6196:UTM  18      -  TULL                                     013 23 06.5
 HV6196
 HV6196_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8780407635(NAD 83)
 HV6196
 HV6196|---------------------------------------------------------------------|
 HV6196| PID    Reference Object                     Distance      Geod. Az  |
 HV6196|                                                           dddmmss.s |
 HV6196| HV6147 TULL                                APPROX. 2.7 KM 0123420.2 |
 HV6196|---------------------------------------------------------------------|
 HV6196
 HV6196                          SUPERSEDED SURVEY CONTROL
 HV6196
 HV6196  NAD 83(1986)-  38 54 37.61556(N)    076 17 38.50828(W) AD(       ) 3
 HV6196  NAD 27      -  38 54 37.20200(N)    076 17 39.70400(W) AD(       ) 3
 HV6196  USSD        -  38 54 37.59400(N)    076 17 39.49500(W) AD(       ) 3
 HV6196
 HV6196.Superseded values are not recommended for survey control.
 HV6196
 HV6196.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6196.See file dsdata.pdf to determine how the superseded data were derived.
 HV6196
 HV6196_MARKER: U = CONCRETE POST
 HV6196_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6196_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6196_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6196
 HV6196  HISTORY     - Date     Condition        Report By
 HV6196  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6196  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6196
 HV6196                          STATION DESCRIPTION
 HV6196
 HV6196'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6196'STATION IS LOCATED ON THE WESTERN SHORE OF CRAB ALLEY BAY, ON
 HV6196'COX NECK, ABOUT 3/8 MILE N OF EASTERN BAY AND 1 MILE NW OF BODKIN
 HV6196'ISLAND, AT EDGE OF CULTIVATED FIELD, ON NARROW NECK OF LAND, ABOUT
 HV6196'3 FEET ABOVE HIGH WATER, 16 YARDS W OF SHORE, 18 YARDS E OF SHORE,
 HV6196'AND 80 YARDS NW OF EXTREME END OF POINT.  STATION MARK IS MARKED
 HV6196'BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6196'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV6196'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6196'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK
 HV6196'IS CENTER OF 2-INCH DRAINTILE PIPE BURIED WITH THE TOP 2
 HV6196'INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6196'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--E GABLE OF BARN, 3/8
 HV6196'MILE, S 59 DEG 36 MIN W.  CHIMNEY OF HOUSE, 3 MILES, S 65 DEG 18
 HV6196'MIN W.  CHIMNEY OF HOUSE, 2-7/8 MILES, S 88 DEG 24 MIN W.  CHIMNEY OF
 HV6196'SMALL HOUSE, 2-1/2 MILES, N 25 DEG 28 MIN E.  CHIMNEY OF HOUSE, 2-1/2
 HV6196'MILES, N 33 DEG 53 MIN E.  CUPOLA ON BARN, 2-3/4 MILES, N 42
 HV6196'DEG 43 MIN E.  RIGHT CORNER OF OLD BARN, 2-1/8 MILES, N 62 DEG 01
 HV6196'MIN E.  E CHIMNEY OF LARGE BRICK HOUSE, 2-1/8 MILES, N 67 DEG 06
 HV6196'MIN E.  RIGHT TANGENT OF NORMANS POINT, 2 MILES, N 74 DEG 14 MIN E.  N
 HV6196'GABLE OF BARN ON PARSONS ISLAND, 2-1/2 MILES, S 87 DEG 36
 HV6196'MIN E.  LEFT TANGENT OF BODKIN ISLAND, 7/8 MILE, S 43 DEG 39 MIN E.
 HV6196
 HV6196                          STATION RECOVERY (1940)
 HV6196
 HV6196'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6196'STATION MARK SEARCHED FOR BUT NOT FOUND.  IT WAS ORIGINALLY LOCATED
 HV6196'AT EDGE OF CULTIVATED FIELD AND WAS EITHER PLOWED OUT OR WASHED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7300 ***********************************************************************
 HV7300  DESIGNATION -  COX
 HV7300  PID         -  HV7300
 HV7300  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7300  COUNTRY     -  US
 HV7300  USGS QUAD   -  NORTH BEACH (2016)
 HV7300
 HV7300                         *CURRENT SURVEY CONTROL
 HV7300  ______________________________________________________________________
 HV7300* NAD 83(1991) POSITION- 38 43 05.08052(N) 076 31 36.98920(W)   ADJUSTED
 HV7300* NAVD 88 ORTHO HEIGHT -     2.1   (meters)        7.    (feet) VERTCON3
 HV7300  ______________________________________________________________________
 HV7300  GEOID HEIGHT    -        -33.657 (meters)                     GEOID18
 HV7300  LAPLACE CORR    -         -4.61  (seconds)                    DEFLEC18
 HV7300  HORZ ORDER      -  SECOND
 HV7300
 HV7300.The horizontal coordinates were established by classical geodetic methods
 HV7300.and adjusted by the National Geodetic Survey in January 1992.
 HV7300
 HV7300.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7300.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7300
 HV7300.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7300.GEOID18 height accuracy estimate available here.
 HV7300
 HV7300.Click photographs - Photos may exist for this station.
 HV7300
 HV7300.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7300
 HV7300. The following values were computed from the NAD 83(1991) position.
 HV7300
 HV7300;                    North         East     Units Scale Factor Converg.
 HV7300;SPC MD       -   116,817.380   441,139.392   MT  0.99995362   +0 17 48.9
 HV7300;SPC MD       -   383,258.35  1,447,304.82   sFT  0.99995362   +0 17 48.9
 HV7300;UTM  18      - 4,286,598.696   367,252.917   MT  0.99981700   -0 57 18.8
 HV7300
 HV7300!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7300!SPC MD       -   1.00000496  x   0.99995362  =   0.99995858
 HV7300!UTM  18      -   1.00000496  x   0.99981700  =   0.99982196
 HV7300
 HV7300:                Primary Azimuth Mark                     Grid Az
 HV7300:SPC MD       -  RAYDIST N BEACH OFFSET                   191 35 31.1
 HV7300:UTM  18      -  RAYDIST N BEACH OFFSET                   192 50 38.8
 HV7300
 HV7300_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6725286598(NAD 83)
 HV7300
 HV7300|---------------------------------------------------------------------|
 HV7300| PID    Reference Object                     Distance      Geod. Az  |
 HV7300|                                                           dddmmss.s |
 HV7300| HV1585 BAKER                               APPROX. 0.6 KM 0040644.0 |
 HV7300| HV7303 RAYDIST N BEACH OFFSET              APPROX. 0.8 KM 1915320.0 |
 HV7300| CX2655 COX RM 1                             25.047 METERS 24937     |
 HV7300| CX2656 COX RM 2                             24.464 METERS 27553     |
 HV7300|---------------------------------------------------------------------|
 HV7300
 HV7300                          SUPERSEDED SURVEY CONTROL
 HV7300
 HV7300  NAD 83(1986)-  38 43 05.07860(N)    076 31 37.00259(W) AD(       ) 2
 HV7300  NAD 27      -  38 43 04.65244(N)    076 31 38.16740(W) AD(       ) 2
 HV7300  NGVD 29 (07/19/86)    2.3    (m)            8.     (f) VERT ANG       
 HV7300
 HV7300.Superseded values are not recommended for survey control.
 HV7300
 HV7300.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7300.See file dsdata.pdf to determine how the superseded data were derived.
 HV7300
 HV7300_MARKER: DS = TRIANGULATION STATION DISK
 HV7300_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7300
 HV7300  HISTORY     - Date     Condition        Report By
 HV7300  HISTORY     - 1973     MONUMENTED       NGS
 HV7300  HISTORY     - 1978     GOOD             NGS
 HV7300
 HV7300                          STATION DESCRIPTION
 HV7300
 HV7300'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 HV7300'THE STATION IS LOCATED ON THE WEST SIDE OF THE CHESAPEAKE BAY,
 HV7300'ABOUT 2 MILES NORTH OF CHESAPEAKE BEACH, 1 MILE NORTH OF NORTH
 HV7300'BEACH AND 1/4 MILE SOUTH OF HOLLAND POINT.  THE PROPERTY IS OWNED
 HV7300'BY THE TOWN OF NORTH BEACH.
 HV7300'
 HV7300'TO REACH THE STATION FROM THE POST OFFICE IN NORTH BEACH, GO
 HV7300'NORTH ON CHESAPEAKE AVENUE FOR 0.3 MILES TO SEVENTH STREET.  TURN
 HV7300'RIGHT AND GO EAST ON SEVENTH STREET FOR 0.05 MILES TO BAY AVENUE.
 HV7300'TURN LEFT AND GO NORTH ON BAY AVENUE FOR 0.65 MILES TO A SIDE ROAD
 HV7300'RIGHT.  TURN RIGHT AND GO EAST ON CYPRESS AVENUE FOR 0.05 MILES TO
 HV7300'THE END OF THE ROAD AT THE SHORE LINE.  TURN LEFT AND GO NORTH
 HV7300'ALONG THE SHORE LINE THROUGH GRASS COVERED YARDS FOR 0.05 MILES TO
 HV7300'THE STATION.
 HV7300'
 HV7300'THE STATION MARK IS A STANDARD DISK STAMPED COX 1973, SET IN THE
 HV7300'TOP OF A 10-INCH ROUND CONCRETE POST WHICH IS FLUSH WITH THE
 HV7300'SURFACE.  IT IS 88.9 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE
 HV7300'FOURTH HOUSE NORTH OF CYPRESS AVENUE, 80.4 FEET EAST OF THE
 HV7300'NORTHEAST CORNER OF THE FIFTH HOUSE, 80.4 FEET EAST-SOUTHEAST OF
 HV7300'THE SOUTHEAST CORNER OF THE SIXTH HOUSE AND 9.0 FEET WEST OF THE
 HV7300'SHORE LINE.
 HV7300'
 HV7300'REFERENCE MARK ONE IS A STANDARD DISK STAMPED COX NO 1 1973, SET
 HV7300'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HV7300'WITH THE SURFACE.  IT IS 85.0 FEET WEST OF THE SHORE LINE, 11 FEET
 HV7300'SOUTHEAST OF THE SOUTHEAST CORNER OF THE FIFTH HOUSE AND 7 FEET
 HV7300'NORTHEAST OF THE NORTHEAST CORNER OF THE FOURTH HOUSE.
 HV7300'
 HV7300'REFERENCE MARK TWO IS A STANDARD DISK STAMPED COX NO 2 1973, SET
 HV7300'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HV7300'WITH THE SURFACE.  IT IS 89.0 FEET WEST OF THE SHORE LINE, 7.7
 HV7300'FEET NORTH OF THE NORTHEAST CORNER OF THE FIFTH HOUSE AND 6.4 FEET
 HV7300'SOUTH OF THE SOUTHEAST CORNER OF THE SIXTH HOUSE.
 HV7300'
 HV7300'TRAVERSE STATION RAYDIST NORTH BEACH OFFSET MAY BE USED AS AN
 HV7300'AZIMUTH MARK FOR THIS STATION, SEE DESCRIPTION THEREOF.
 HV7300
 HV7300                          STATION RECOVERY (1978)
 HV7300
 HV7300'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (RHW)
 HV7300'THE STATION AND REFERENCE MARKS 1 AND 2 WERE RECOVERED AS
 HV7300'DESCRIBED AND IN GOOD CONDITION.  TRAVERSE STATION RAYDIST NORTH
 HV7300'BEACH OFFSET WAS USED AS AN AZIMUTH FOR THIS STATION, SEE
 HV7300'DESCRIPTION OF SAME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5398 ***********************************************************************
 JV5398  DESIGNATION -  COX
 JV5398  PID         -  JV5398
 JV5398  STATE/COUNTY-  MD/BALTIMORE
 JV5398  COUNTRY     -  US
 JV5398  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5398
 JV5398                         *CURRENT SURVEY CONTROL
 JV5398  ______________________________________________________________________
 JV5398* NAD 83(1991) POSITION- 39 17 33.48456(N) 076 27 55.24365(W)   ADJUSTED
 JV5398* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV5398  ______________________________________________________________________
 JV5398  GEOID HEIGHT    -        -32.995 (meters)                     GEOID18
 JV5398  LAPLACE CORR    -         -1.95  (seconds)                    DEFLEC18
 JV5398  HORZ ORDER      -  SECOND
 JV5398
 JV5398.The horizontal coordinates were established by classical geodetic methods
 JV5398.and adjusted by the National Geodetic Survey in January 1992.
 JV5398
 JV5398.The orthometric height was scaled from a topographic map.
 JV5398
 JV5398.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5398.GEOID18 height accuracy estimate available here.
 JV5398
 JV5398.Click photographs - Photos may exist for this station.
 JV5398
 JV5398.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5398
 JV5398. The following values were computed from the NAD 83(1991) position.
 JV5398
 JV5398;                    North         East     Units Scale Factor Converg.
 JV5398;SPC MD       -   180,627.828   446,122.456   MT  0.99997626   +0 20 08.0
 JV5398;SPC MD       -   592,609.80  1,463,653.42   sFT  0.99997626   +0 20 08.0
 JV5398;UTM  18      - 4,350,274.821   373,634.735   MT  0.99979661   -0 55 41.2
 JV5398
 JV5398!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5398!SPC MD       -   1.00000490  x   0.99997626  =   0.99998116
 JV5398!UTM  18      -   1.00000490  x   0.99979661  =   0.99980151
 JV5398
 JV5398:                Primary Azimuth Mark                     Grid Az
 JV5398:SPC MD       -  WALNUT                                   125 15 08.0
 JV5398:UTM  18      -  WALNUT                                   126 30 57.2
 JV5398
 JV5398_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7363450274(NAD 83)
 JV5398
 JV5398|---------------------------------------------------------------------|
 JV5398| PID    Reference Object                     Distance      Geod. Az  |
 JV5398|                                                           dddmmss.s |
 JV5398| JV5404 WALNUT                              APPROX. 1.5 KM 1253516.0 |
 JV5398| JV5396 BALTIMORE CITY SEWAGE PLANT TK      APPROX. 2.8 KM 2724341.7 |
 JV5398| CB1113 COX RM 1                             25.680 METERS 28734     |
 JV5398|---------------------------------------------------------------------|
 JV5398
 JV5398                          SUPERSEDED SURVEY CONTROL
 JV5398
 JV5398  NAD 83(1986)-  39 17 33.48019(N)    076 27 55.25218(W) AD(       ) 2
 JV5398  NAD 27      -  39 17 33.09400(N)    076 27 56.39600(W) AD(       ) 2
 JV5398
 JV5398.Superseded values are not recommended for survey control.
 JV5398
 JV5398.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5398.See file dsdata.pdf to determine how the superseded data were derived.
 JV5398
 JV5398_MARKER: DS = TRIANGULATION STATION DISK
 JV5398_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5398_MARK LOGO: CGS
 JV5398_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5398+STABILITY: SURFACE MOTION
 JV5398
 JV5398  HISTORY     - Date     Condition        Report By
 JV5398  HISTORY     - 1934     MONUMENTED       CGS
 JV5398  HISTORY     - 1974     MARK NOT FOUND   MDDNR
 JV5398  HISTORY     - 1979     GOOD             NGS
 JV5398
 JV5398                          STATION DESCRIPTION
 JV5398
 JV5398'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5398'ON NORTHERN SHORE OF BACK RIVER, ON COX POINT, IN YARD ABOUT 300
 JV5398'FEET N OF POINT, 54 FEET N OF SMALL SUMMER HOUSE IN YARD AND 60
 JV5398'FEET W OF HIGH-WATER LINE.
 JV5398'
 JV5398'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5398'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5398'
 JV5398'REFERENCE MARK IS 82 FEET W OF STATION AND ABOUT 45 FEET E OF BLUFF.
 JV5398
 JV5398                          STATION RECOVERY (1974)
 JV5398
 JV5398'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 JV5398'COX 1934 NOT RECOVD
 JV5398'
 JV5398'COX NO1 1934 NOT RECOVD
 JV5398'
 JV5398'HSE AND OTHER REFS. DESTY.  AREA NOW A PARK.
 JV5398
 JV5398                          STATION RECOVERY (1979)
 JV5398
 JV5398'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 JV5398'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION.
 JV5398'
 JV5398'ADDITIONAL INFORMATION FOLLOWS.
 JV5398'
 JV5398'THE STATION IS BEST REACHED FROM THE EAST END OF THE BRIDGE OVER THE
 JV5398'BACK RIVER ON EASTERN AVENUE IN ESSEX, GO EAST ON EASTERN AVENUE FOR
 JV5398'0.45 MILE TO A CROSSROADS.  TURN RIGHT AND GO SOUTHERLY ON RIVERSIDE
 JV5398'DRIVE FOR 1.1 MILES TO THE ENTRANCE TO COX POINT PARK.  CONTINUE
 JV5398'SOUTH PICKING WAY THROUGH THE PARK FOR 0.25 MILE TO A PICNIC AREA
 JV5398'AND THE STATION ABOUT 100 YARDS NE OF THE MOST SW POINT OF LAND, 98
 JV5398'FEET EAST OF THE NORTH I BEAM OF A 4-FOOT UTILITY BOX, 63 FEET
 JV5398'NORTH-NORTHEAST OF A DRINKING WATER FOUNTAIN AND 33 FEET NORTH OF
 JV5398'A POWERLINE POLE.
 JV5398'
 JV5398'RM 1 IS 48 FEET SE OF A 4-INCH ROUND, 16 FEET HIGH STEEL FLAGPOLE
 JV5398'AND 2-FEET EAST OF 12-INCH OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7204 ***********************************************************************
 JV7204  DESIGNATION -  COX
 JV7204  PID         -  JV7204
 JV7204  STATE/COUNTY-  MD/FREDERICK
 JV7204  COUNTRY     -  US
 JV7204  USGS QUAD   -  MIDDLETOWN (2016)
 JV7204
 JV7204                         *CURRENT SURVEY CONTROL
 JV7204  ______________________________________________________________________
 JV7204* NAD 83(2011) POSITION- 39 29 56.46821(N) 077 30 46.33831(W)   ADJUSTED
 JV7204* NAD 83(2011) ELLIP HT-   318.995 (meters)        (06/27/12)   ADJUSTED
 JV7204* NAD 83(2011) EPOCH   -  2010.00
 JV7204* NAVD 88 ORTHO HEIGHT -   352.0   (meters)     1155.    (feet) GPS OBS
 JV7204  ______________________________________________________________________
 JV7204  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7204  GEOID HEIGHT    -        -33.340 (meters)                     GEOID93
 JV7204  GEOID HEIGHT    -        -33.010 (meters)                     GEOID18
 JV7204  NAD 83(2011) X  -  1,065,646.257 (meters)                     COMP
 JV7204  NAD 83(2011) Y  - -4,811,935.212 (meters)                     COMP
 JV7204  NAD 83(2011) Z  -  4,035,422.374 (meters)                     COMP
 JV7204  LAPLACE CORR    -          9.08  (seconds)                    DEFLEC18
 JV7204
 JV7204  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7204  Standards:
 JV7204         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7204            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7204  -------------------------------------------------------------------
 JV7204  NETWORK    3.43   3.78           1.47   1.33   1.93     -0.11164601
 JV7204  -------------------------------------------------------------------
 JV7204  Click here for local accuracies and other accuracy information.
 JV7204
 JV7204.The horizontal coordinates were established by GPS observations
 JV7204.and adjusted by the National Geodetic Survey in June 2012.
 JV7204
 JV7204.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7204.been affixed to the stable North American tectonic plate. See 
 JV7204.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7204
 JV7204.The horizontal coordinates are valid at the epoch date displayed above
 JV7204.which is a decimal equivalence of Year/Month/Day.
 JV7204
 JV7204.The orthometric height was determined by GPS observations and a
 JV7204.high-resolution geoid model.
 JV7204
 JV7204.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7204.GEOID18 height accuracy estimate available here.
 JV7204
 JV7204.Click photographs - Photos may exist for this station.
 JV7204
 JV7204.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7204
 JV7204.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7204
 JV7204.The ellipsoidal height was determined by GPS observations
 JV7204.and is referenced to NAD 83.
 JV7204
 JV7204. The following values were computed from the NAD 83(2011) position.
 JV7204
 JV7204;                    North         East     Units Scale Factor Converg.
 JV7204;SPC MD       -   203,529.910   355,885.364   MT  1.00000894   -0 19 18.8
 JV7204;SPC MD       -   667,747.71  1,167,600.57   sFT  1.00000894   -0 19 18.8
 JV7204;UTM  18      - 4,375,170.501   283,929.360   MT  1.00017484   -1 35 56.3
 JV7204
 JV7204!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7204!SPC MD       -   0.99994996  x   1.00000894  =   0.99995890
 JV7204!UTM  18      -   0.99994996  x   1.00017484  =   1.00012479
 JV7204
 JV7204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8392975170(NAD 83)
 JV7204
 JV7204                          SUPERSEDED SURVEY CONTROL
 JV7204
 JV7204  NAD 83(2007)-  39 29 56.46837(N)    077 30 46.33899(W) AD(2002.00) 0
 JV7204  ELLIP H (02/10/07)  319.018  (m)                       GP(2002.00)    
 JV7204  ELLIP H (08/30/02)  319.007  (m)                       GP(       ) 4 2
 JV7204  NAD 83(1991)-  39 29 56.46887(N)    077 30 46.33959(W) AD(       ) 1
 JV7204  ELLIP H (02/09/94)  318.945  (m)                       GP(       ) 4 1
 JV7204
 JV7204.Superseded values are not recommended for survey control.
 JV7204
 JV7204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7204.See file dsdata.pdf to determine how the superseded data were derived.
 JV7204
 JV7204_MARKER: DD = SURVEY DISK
 JV7204_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7204_STAMPING: COX 1993
 JV7204_MARK LOGO: MD-021
 JV7204_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7204_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7204+STABILITY: SURFACE MOTION
 JV7204_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7204+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7204
 JV7204  HISTORY     - Date     Condition        Report By
 JV7204  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7204  HISTORY     - 20130614 MARK NOT FOUND   DEWDAV
 JV7204
 JV7204                          STATION DESCRIPTION
 JV7204
 JV7204'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7204'FROM FREDERICK, MD, PROCEED NORTHWESTERLY ON US RTE 40 (BALTIMORE
 JV7204'NATIONAL PIKE) TO GAMBRILL PARK ROAD. TURN RIGHT AND PROCEED
 JV7204'NORTHERLY ALONG GAMBRILL PARK ROAD 4.6 MI (7.4 KM) TO A TEE
 JV7204'INTERSECTION AT COXEY BROWN ROAD. TURN LEFT AND PROCEED ALONG COXEY
 JV7204'BROWN ROAD FOR 1 MI (1.6 KM) TO STATION ON LEFT. STATION IS SET IN A
 JV7204'CULTIVATED FEILD, 9 FEET (2.7 M) SOUTH OF THE CENTERLINE OF COXEY
 JV7204'BROWN ROAD, 123 FEET (37.5 M) FROM C AND P POWER POLE NO 24 AND 118
 JV7204'FEET (36.0 M) FROM C AND P POWER POLE NO 23. STATION IS A BRASS DISK
 JV7204'SET IN THE TOP OF AN 8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH
 JV7204'THE GROUND.
 JV7204
 JV7204                          STATION RECOVERY (2013)
 JV7204
 JV7204'RECOVERY NOTE BY DEWBERRY DAVIS 2013 (GDS)
 JV7204'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ4486 ***********************************************************************
 DQ4486  HT_MOD      -  This is a Height Modernization Survey Station.
 DQ4486  DESIGNATION -  COX 1
 DQ4486  PID         -  DQ4486
 DQ4486  STATE/COUNTY-  MD/BALTIMORE
 DQ4486  COUNTRY     -  US
 DQ4486  USGS QUAD   -  CURTIS BAY (2016)
 DQ4486
 DQ4486                         *CURRENT SURVEY CONTROL
 DQ4486  ______________________________________________________________________
 DQ4486* NAD 83(2011) POSITION- 39 11 46.23267(N) 076 32 30.51792(W)   ADJUSTED
 DQ4486* NAD 83(2011) ELLIP HT-   -24.882 (meters)        (02/07/17)   ADJUSTED
 DQ4486* NAD 83(2011) EPOCH   -  2010.00
 DQ4486* NAVD 88 ORTHO HEIGHT -     8.10  (meters)       26.6   (feet) GPS OBS
 DQ4486  ______________________________________________________________________
 DQ4486  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DQ4486  GEOID HEIGHT    -        -32.991 (meters)                     GEOID12B
 DQ4486  GEOID HEIGHT    -        -32.986 (meters)                     GEOID18
 DQ4486  NAD 83(2011) X  -  1,151,942.544 (meters)                     COMP
 DQ4486  NAD 83(2011) Y  - -4,813,657.982 (meters)                     COMP
 DQ4486  NAD 83(2011) Z  -  4,009,203.194 (meters)                     COMP
 DQ4486  LAPLACE CORR    -         -2.98  (seconds)                    DEFLEC18
 DQ4486
 DQ4486  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ4486  Standards:
 DQ4486         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ4486            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ4486  -------------------------------------------------------------------
 DQ4486  NETWORK    0.50   0.92           0.23   0.17   0.47      0.09721291
 DQ4486  -------------------------------------------------------------------
 DQ4486  Click here for local accuracies and other accuracy information.
 DQ4486
 DQ4486.The horizontal coordinates were established by GPS observations
 DQ4486.and adjusted by the JMT ENGINEERING in February 2017.
 DQ4486
 DQ4486.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ4486.been affixed to the stable North American tectonic plate. See 
 DQ4486.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DQ4486
 DQ4486.The horizontal coordinates are valid at the epoch date displayed above
 DQ4486.which is a decimal equivalence of Year/Month/Day.
 DQ4486
 DQ4486.The orthometric height was determined by GPS observations and a
 DQ4486.high-resolution geoid model using precise GPS observation and
 DQ4486.processing techniques.
 DQ4486
 DQ4486.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ4486.GEOID18 height accuracy estimate available here.
 DQ4486
 DQ4486.Click photographs - Photos may exist for this station.
 DQ4486
 DQ4486.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DQ4486
 DQ4486.The Laplace correction was computed from DEFLEC18 derived deflections.
 DQ4486
 DQ4486.The ellipsoidal height was determined by GPS observations
 DQ4486.and is referenced to NAD 83.
 DQ4486
 DQ4486. The following values were computed from the NAD 83(2011) position.
 DQ4486
 DQ4486;                    North         East     Units Scale Factor Converg.
 DQ4486;SPC MD       -   169,883.530   439,579.935   MT  0.99996544   +0 17 15.3
 DQ4486;SPC MD       -   557,359.55  1,442,188.50   sFT  0.99996544   +0 17 15.3
 DQ4486;UTM  18      - 4,339,679.061   366,858.105   MT  0.99981827   -0 58 28.3
 DQ4486
 DQ4486!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ4486!SPC MD       -   1.00000390  x   0.99996544  =   0.99996934
 DQ4486!UTM  18      -   1.00000390  x   0.99981827  =   0.99982217
 DQ4486
 DQ4486_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6685839679(NAD 83)
 DQ4486
 DQ4486                          SUPERSEDED SURVEY CONTROL
 DQ4486
 DQ4486.No superseded survey control is available for this station.
 DQ4486
 DQ4486_MARKER: DD = SURVEY DISK
 DQ4486_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DQ4486_STAMPING: COX-1 OCTOBER 2016
 DQ4486_MARK LOGO: NONE
 DQ4486_PROJECTION: FLUSH
 DQ4486_MAGNETIC: N = NO MAGNETIC MATERIAL
 DQ4486_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DQ4486+STABILITY: SURFACE MOTION
 DQ4486_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DQ4486+SATELLITE: SATELLITE OBSERVATIONS - November 12, 2018
 DQ4486
 DQ4486  HISTORY     - Date     Condition        Report By
 DQ4486  HISTORY     - 20161011 MONUMENTED       JMTMD
 DQ4486  HISTORY     - 20181112 GOOD             DEWDAV
 DQ4486
 DQ4486                          STATION DESCRIPTION
 DQ4486
 DQ4486'DESCRIBED BY JMT ENGINEERING 2016 (EAS)
 DQ4486'THE MARK IS LOCATED ABOUT 7.0 MI (11.3 KM) SOUTHEAST OF BALTIMORE, 4.0
 DQ4486'MI (6.4 KM) SOUTHWEST OF SPARROWS POINT AND 3.0 MI (4.8 KM) NORTHWEST
 DQ4486'OF RIVIERA BEACH IN CURTIS BAY AND ON THE GROUNDS OF THE COX CREEK
 DQ4486'FACILITY OF THE MARYLAND PORT ADMINISTRATION.
 DQ4486'
 DQ4486'TO REACH TAKE I-695 SOUTH TO EXIT 1 (HAWKINS PONINT ROAD).  AT END OF
 DQ4486'RAMP TURN LEFT (SOUTH) ON TO QUARANTINE ROAD FOR 0.18 MI (0.29 KM) TO
 DQ4486'FORT SMALLWOOD ROAD.  TURN LEFT ONTO FORT SMALLWOOD ROAD AND CONTINUE
 DQ4486'FOR 1 MI (1.6 KM) TO KEMBO ROAD.  TURN LEFT AND CONTINUE ON KEMBO ROAD
 DQ4486'FOR 0.75 MI (1.21 KM) TO THE STATION ON THE RIGHT.
 DQ4486'
 DQ4486'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DQ4486'CONCRETE.  IT IS 93.8 FT (28.6 M) EAST OF A LIGHT POLE, 57.2 FT (17.4
 DQ4486'M) WEST OF A 6 INCH (15 CM) CEDAR TREE AND 11.5 FT (3.5 M) SOUTH OF
 DQ4486'THE EDGE OF ROAD.
 DQ4486
 DQ4486                          STATION RECOVERY (2018)
 DQ4486
 DQ4486'RECOVERY NOTE BY DEWBERRY DAVIS 2018 (GDS)
 DQ4486'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ4487 ***********************************************************************
 DQ4487  HT_MOD      -  This is a Height Modernization Survey Station.
 DQ4487  DESIGNATION -  COX 2
 DQ4487  PID         -  DQ4487
 DQ4487  STATE/COUNTY-  MD/BALTIMORE
 DQ4487  COUNTRY     -  US
 DQ4487  USGS QUAD   -  CURTIS BAY (2016)
 DQ4487
 DQ4487                         *CURRENT SURVEY CONTROL
 DQ4487  ______________________________________________________________________
 DQ4487* NAD 83(2011) POSITION- 39 11 49.07293(N) 076 32 18.57271(W)   ADJUSTED
 DQ4487* NAD 83(2011) ELLIP HT-   -21.901 (meters)        (02/07/17)   ADJUSTED
 DQ4487* NAD 83(2011) EPOCH   -  2010.00
 DQ4487* NAVD 88 ORTHO HEIGHT -    11.09  (meters)       36.4   (feet) GPS OBS
 DQ4487  ______________________________________________________________________
 DQ4487  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DQ4487  GEOID HEIGHT    -        -32.995 (meters)                     GEOID12B
 DQ4487  GEOID HEIGHT    -        -32.991 (meters)                     GEOID18
 DQ4487  NAD 83(2011) X  -  1,152,208.963 (meters)                     COMP
 DQ4487  NAD 83(2011) Y  - -4,813,539.675 (meters)                     COMP
 DQ4487  NAD 83(2011) Z  -  4,009,272.958 (meters)                     COMP
 DQ4487  LAPLACE CORR    -         -2.87  (seconds)                    DEFLEC18
 DQ4487
 DQ4487  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ4487  Standards:
 DQ4487         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ4487            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ4487  -------------------------------------------------------------------
 DQ4487  NETWORK    0.60   1.14           0.28   0.19   0.58      0.00431141
 DQ4487  -------------------------------------------------------------------
 DQ4487  Click here for local accuracies and other accuracy information.
 DQ4487
 DQ4487.The horizontal coordinates were established by GPS observations
 DQ4487.and adjusted by the JMT ENGINEERING in February 2017.
 DQ4487
 DQ4487.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ4487.been affixed to the stable North American tectonic plate. See 
 DQ4487.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DQ4487
 DQ4487.The horizontal coordinates are valid at the epoch date displayed above
 DQ4487.which is a decimal equivalence of Year/Month/Day.
 DQ4487
 DQ4487.The orthometric height was determined by GPS observations and a
 DQ4487.high-resolution geoid model using precise GPS observation and
 DQ4487.processing techniques.
 DQ4487
 DQ4487.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ4487.GEOID18 height accuracy estimate available here.
 DQ4487
 DQ4487.Click photographs - Photos may exist for this station.
 DQ4487
 DQ4487.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DQ4487
 DQ4487.The Laplace correction was computed from DEFLEC18 derived deflections.
 DQ4487
 DQ4487.The ellipsoidal height was determined by GPS observations
 DQ4487.and is referenced to NAD 83.
 DQ4487
 DQ4487. The following values were computed from the NAD 83(2011) position.
 DQ4487
 DQ4487;                    North         East     Units Scale Factor Converg.
 DQ4487;SPC MD       -   169,972.560   439,866.120   MT  0.99996552   +0 17 22.8
 DQ4487;SPC MD       -   557,651.64  1,443,127.43   sFT  0.99996552   +0 17 22.8
 DQ4487;UTM  18      - 4,339,761.753   367,146.138   MT  0.99981733   -0 58 20.8
 DQ4487
 DQ4487!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ4487!SPC MD       -   1.00000344  x   0.99996552  =   0.99996896
 DQ4487!UTM  18      -   1.00000344  x   0.99981733  =   0.99982077
 DQ4487
 DQ4487_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6714639761(NAD 83)
 DQ4487
 DQ4487                          SUPERSEDED SURVEY CONTROL
 DQ4487
 DQ4487.No superseded survey control is available for this station.
 DQ4487
 DQ4487_MARKER: DD = SURVEY DISK
 DQ4487_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DQ4487_STAMPING: COX-2 OCTOBER 2016
 DQ4487_MARK LOGO: MDPORT
 DQ4487_PROJECTION: FLUSH
 DQ4487_MAGNETIC: N = NO MAGNETIC MATERIAL
 DQ4487_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DQ4487+STABILITY: SURFACE MOTION
 DQ4487_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DQ4487+SATELLITE: SATELLITE OBSERVATIONS - October 11, 2016
 DQ4487
 DQ4487  HISTORY     - Date     Condition        Report By
 DQ4487  HISTORY     - 20161011 MONUMENTED       JMTMD
 DQ4487
 DQ4487                          STATION DESCRIPTION
 DQ4487
 DQ4487'DESCRIBED BY JMT ENGINEERING 2016 (EAS)
 DQ4487'THE MARK IS LOCATED ABOUT 7.0 MI (11.3 KM) SOUTHEAST OF BALTIMORE, 4.0
 DQ4487'MI (6.4 KM) SOUTHWEST OF SPARROWS POINT AND 3.0 MI (4.8 KM) NORTHWEST
 DQ4487'OF RIVIERA BEACH IN CURTIS BAY AND ON THE GROUNDS OF THE COX CREEK
 DQ4487'FACILITY OF THE MARYLAND PORT ADMINISTRATION.
 DQ4487'
 DQ4487'TO REACH TAKE I-695 SOUTH TO EXIT 1 (HAWKINS PONINT ROAD).  AT END OF
 DQ4487'RAMP TURN LEFT (SOUTH) ON TO QUARANTINE ROAD FOR 0.18 MI (0.29 KM) TO
 DQ4487'FORT SMALLWOOD ROAD.  TURN LEFT ONTO FORT SMALLWOOD ROAD AND CONTINUE
 DQ4487'FOR 1 MI (1.6 KM) TO KEMBO ROAD.  TURN LEFT AND CONTINUE ON KEMBO ROAD
 DQ4487'FOR 0.94 MI (1.51 KM) TO THE STATION ON THE LEFT.
 DQ4487'
 DQ4487'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DQ4487'CONCRETE.  IT IS 100.8 FT (30.7 M) NORTHEAST OF A LIGHT POLE, 72.5 FT
 DQ4487'(22.1 M) NORTHWEST OF A SIGN AND 33.3 FT (10.1 M) NORTH OF THE EDGE OF
 DQ4487'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ4488 ***********************************************************************
 DQ4488  HT_MOD      -  This is a Height Modernization Survey Station.
 DQ4488  DESIGNATION -  COX 3
 DQ4488  PID         -  DQ4488
 DQ4488  STATE/COUNTY-  MD/BALTIMORE
 DQ4488  COUNTRY     -  US
 DQ4488  USGS QUAD   -  CURTIS BAY (2016)
 DQ4488
 DQ4488                         *CURRENT SURVEY CONTROL
 DQ4488  ______________________________________________________________________
 DQ4488* NAD 83(2011) POSITION- 39 11 43.18736(N) 076 32 09.77024(W)   ADJUSTED
 DQ4488* NAD 83(2011) ELLIP HT-   -21.964 (meters)        (02/07/17)   ADJUSTED
 DQ4488* NAD 83(2011) EPOCH   -  2010.00
 DQ4488* NAVD 88 ORTHO HEIGHT -    11.03  (meters)       36.2   (feet) GPS OBS
 DQ4488  ______________________________________________________________________
 DQ4488  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DQ4488  GEOID HEIGHT    -        -33.000 (meters)                     GEOID12B
 DQ4488  GEOID HEIGHT    -        -32.996 (meters)                     GEOID18
 DQ4488  NAD 83(2011) X  -  1,152,441.078 (meters)                     COMP
 DQ4488  NAD 83(2011) Y  - -4,813,602.005 (meters)                     COMP
 DQ4488  NAD 83(2011) Z  -  4,009,132.256 (meters)                     COMP
 DQ4488  LAPLACE CORR    -         -2.80  (seconds)                    DEFLEC18
 DQ4488
 DQ4488  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ4488  Standards:
 DQ4488         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ4488            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ4488  -------------------------------------------------------------------
 DQ4488  NETWORK    0.66   1.25           0.31   0.21   0.64      0.03295181
 DQ4488  -------------------------------------------------------------------
 DQ4488  Click here for local accuracies and other accuracy information.
 DQ4488
 DQ4488.The horizontal coordinates were established by GPS observations
 DQ4488.and adjusted by the JMT ENGINEERING in February 2017.
 DQ4488
 DQ4488.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ4488.been affixed to the stable North American tectonic plate. See 
 DQ4488.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DQ4488
 DQ4488.The horizontal coordinates are valid at the epoch date displayed above
 DQ4488.which is a decimal equivalence of Year/Month/Day.
 DQ4488
 DQ4488.The orthometric height was determined by GPS observations and a
 DQ4488.high-resolution geoid model using precise GPS observation and
 DQ4488.processing techniques.
 DQ4488
 DQ4488.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ4488.GEOID18 height accuracy estimate available here.
 DQ4488
 DQ4488.Click photographs - Photos may exist for this station.
 DQ4488
 DQ4488.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DQ4488
 DQ4488.The Laplace correction was computed from DEFLEC18 derived deflections.
 DQ4488
 DQ4488.The ellipsoidal height was determined by GPS observations
 DQ4488.and is referenced to NAD 83.
 DQ4488
 DQ4488. The following values were computed from the NAD 83(2011) position.
 DQ4488
 DQ4488;                    North         East     Units Scale Factor Converg.
 DQ4488;SPC MD       -   169,792.136   440,078.257   MT  0.99996536   +0 17 28.3
 DQ4488;SPC MD       -   557,059.70  1,443,823.41   sFT  0.99996536   +0 17 28.3
 DQ4488;UTM  18      - 4,339,576.728   367,354.219   MT  0.99981665   -0 58 15.1
 DQ4488
 DQ4488!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ4488!SPC MD       -   1.00000345  x   0.99996536  =   0.99996881
 DQ4488!UTM  18      -   1.00000345  x   0.99981665  =   0.99982010
 DQ4488
 DQ4488_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6735439576(NAD 83)
 DQ4488
 DQ4488                          SUPERSEDED SURVEY CONTROL
 DQ4488
 DQ4488.No superseded survey control is available for this station.
 DQ4488
 DQ4488_MARKER: DD = SURVEY DISK
 DQ4488_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DQ4488_STAMPING: COX-3 OCTOBER 2016
 DQ4488_MARK LOGO: MDPORT
 DQ4488_PROJECTION: FLUSH
 DQ4488_MAGNETIC: N = NO MAGNETIC MATERIAL
 DQ4488_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DQ4488+STABILITY: SURFACE MOTION
 DQ4488_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DQ4488+SATELLITE: SATELLITE OBSERVATIONS - October 24, 2016
 DQ4488
 DQ4488  HISTORY     - Date     Condition        Report By
 DQ4488  HISTORY     - 20161024 MONUMENTED       JMTMD
 DQ4488
 DQ4488                          STATION DESCRIPTION
 DQ4488
 DQ4488'DESCRIBED BY JMT ENGINEERING 2016 (EAS)
 DQ4488'THE MARK IS LOCATED ABOUT 7.0 MI (11.3 KM) SOUTHEAST OF BALTIMORE, 4.0
 DQ4488'MI (6.4 KM) SOUTHWEST OF SPARROWS POINT AND 3.0 MI (4.8 KM) NORTHWEST
 DQ4488'OF RIVIERA BEACH IN CURTIS BAY AND ON THE GROUNDS OF THE COX CREEK
 DQ4488'FACILITY OF THE MARYLAND PORT ADMINISTRATION.
 DQ4488'
 DQ4488'TO REACH TAKE I-695 SOUTH TO EXIT 1 (HAWKINS PONINT ROAD).  AT END OF
 DQ4488'RAMP TURN LEFT (SOUTH) ON TO QUARANTINE ROAD FOR 0.18 MI (0.29 KM) TO
 DQ4488'FORT SMALLWOOD ROAD.  TURN LEFT ONTO FORT SMALLWOOD ROAD AND CONTINUE
 DQ4488'FOR 1 MI (1.6 KM) TO KEMBO ROAD.  TURN LEFT AND CONTINUE ON KEMBO ROAD
 DQ4488'FOR 1.07 MI (1.72 KM) TO A GRAVEL DRIVE INTERSECTION.  TURN RIGHT
 DQ4488'(WEST) AND CONTINUE FOR 0.13 MI (0.21 KM) TO THE STATION ON THE RIGHT.
 DQ4488'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DQ4488'CONCRETE.  IT IS 30.3 FT (9.2 M) NORTHWEST FROM THE INTERSECTION OF
 DQ4488'TWO ROADS, 12.5 FT (3.8 M) NORTH OF A YELLOW REFLECTOR POST AND 5.7 FT
 DQ4488'(1.7 M) WEST OF THE EDGE OF ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6210 ***********************************************************************
 HV6210  DESIGNATION -  COXES CREEK
 HV6210  PID         -  HV6210
 HV6210  STATE/COUNTY-  MD/QUEEN ANNES
 HV6210  COUNTRY     -  US
 HV6210  USGS QUAD   -  KENT ISLAND (2016)
 HV6210
 HV6210                         *CURRENT SURVEY CONTROL
 HV6210  ______________________________________________________________________
 HV6210* NAD 83(1991) POSITION- 38 54 41.30790(N) 076 19 04.06136(W)   ADJUSTED
 HV6210* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6210  ______________________________________________________________________
 HV6210  GEOID HEIGHT    -        -33.763 (meters)                     GEOID18
 HV6210  LAPLACE CORR    -         -4.19  (seconds)                    DEFLEC18
 HV6210  HORZ ORDER      -  THIRD
 HV6210
 HV6210.The horizontal coordinates were established by classical geodetic methods
 HV6210.and adjusted by the National Geodetic Survey in January 1992.
 HV6210
 HV6210.The orthometric height was scaled from a topographic map.
 HV6210
 HV6210.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6210.GEOID18 height accuracy estimate available here.
 HV6210
 HV6210.Click photographs - Photos may exist for this station.
 HV6210
 HV6210.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6210
 HV6210. The following values were computed from the NAD 83(1991) position.
 HV6210
 HV6210;                    North         East     Units Scale Factor Converg.
 HV6210;SPC MD       -   138,400.136   459,167.044   MT  0.99995004   +0 25 41.4
 HV6210;SPC MD       -   454,067.78  1,506,450.54   sFT  0.99995004   +0 25 41.4
 HV6210;UTM  18      - 4,307,778.256   385,745.631   MT  0.99976074   -0 49 40.2
 HV6210
 HV6210!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6210!SPC MD       -   1.00000533  x   0.99995004  =   0.99995537
 HV6210!UTM  18      -   1.00000533  x   0.99976074  =   0.99976607
 HV6210
 HV6210:                Primary Azimuth Mark                     Grid Az
 HV6210:SPC MD       -  BODKIN                                   118 09 08.4
 HV6210:UTM  18      -  BODKIN                                   119 24 30.0
 HV6210
 HV6210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8574507778(NAD 83)
 HV6210
 HV6210|---------------------------------------------------------------------|
 HV6210| PID    Reference Object                     Distance      Geod. Az  |
 HV6210|                                                           dddmmss.s |
 HV6210| HV6153 RED                                 APPROX. 2.1 KM 0540039.4 |
 HV6210| HV6200 BODKIN                              APPROX. 3.7 KM 1183449.8 |
 HV6210|---------------------------------------------------------------------|
 HV6210
 HV6210                          SUPERSEDED SURVEY CONTROL
 HV6210
 HV6210  NAD 83(1986)-  38 54 41.30396(N)    076 19 04.07391(W) AD(       ) 3
 HV6210  NAD 27      -  38 54 40.88200(N)    076 19 05.26900(W) AD(       ) 3
 HV6210  USSD        -  38 54 41.28500(N)    076 19 05.06000(W) AD(       ) 3
 HV6210
 HV6210.Superseded values are not recommended for survey control.
 HV6210
 HV6210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6210.See file dsdata.pdf to determine how the superseded data were derived.
 HV6210
 HV6210_MARKER: V = STONE MONUMENT
 HV6210_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6210_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6210_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6210
 HV6210  HISTORY     - Date     Condition        Report By
 HV6210  HISTORY     - 1899     MONUMENTED       CGS
 HV6210  HISTORY     - 1935     MARK NOT FOUND   CGS
 HV6210  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6210
 HV6210                          STATION DESCRIPTION
 HV6210
 HV6210'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (PAW)
 HV6210'STATION IS ON THE SOUTHEASTERN POINT OF BATTS NECK, ON POINT AT
 HV6210'WESTERN SIDE OF ENTRANCE TO COX CREEK (EASTERN BAY), ON FIRM
 HV6210'GROUND SURROUNDED BY PATCHES OF MARSHY LAND, AND ABOUT 20 FEET
 HV6210'INSIDE HIGH-WATER MARK.  BUSHES GROW TO THE W OF THE
 HV6210'STATION.  STATION MARKED BY A BOTTLE 25 INCHES BELOW SURFACE OF
 HV6210'GROUND.  ABOVE THE BOTTLE IS PLACED A GRANITE POST 27 INCHES
 HV6210'LONG AND 12 INCHES SQUARE IN THE ROUGH, THE BOTTOM OF THE POST
 HV6210'BEING ABOUT 3 INCHES ABOVE TOP OF BOTTLE.  THE TOP OF THE POST
 HV6210'IS DRESSED TO A 6-INCH SQUARE AND IS MARKED WITH SQUARE
 HV6210'CROSSLINES AND THE LETTERS U.S.
 HV6210
 HV6210                          STATION RECOVERY (1935)
 HV6210
 HV6210'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (JCP)
 HV6210'STATION COULD NOT BE RECOVERED.  SEVERAL HOURS WERE SPENT IN
 HV6210'SEARCH OF STATION.  ALL THE PERSIMMON TREES IT WAS TIED IN TO HAVE
 HV6210'BEEN WASHED AWAY.  THE FARMER UPON WHOSE LAND THE STATION WAS
 HV6210'LOCATED REPORTED THAT THE STATION HAD BEEN WASHED OUT.
 HV6210'
 HV6210'IT IS RECOMMENDED THAT THE STATION BE RECORDED AS LOST.
 HV6210
 HV6210                          STATION RECOVERY (1942)
 HV6210
 HV6210'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (LWS)
 HV6210'STATION MARK SEARCHED FOR BUT NOT FOUND.  DESCRIPTION IS
 HV6210'INADEQUATE, BUT A THOROUGH SEARCH WAS MADE ON MARSH AT THIS
 HV6210'POINT.  NOTHING WAS FOUND.
 HV6210'
 HV6210'RECOMMENDED THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0594 ***********************************************************************
 HV0594  DESIGNATION -  CRAB
 HV0594  PID         -  HV0594
 HV0594  STATE/COUNTY-  MD/ST MARYS
 HV0594  COUNTRY     -  US
 HV0594  USGS QUAD   -  PINEY POINT (2016)
 HV0594
 HV0594                         *CURRENT SURVEY CONTROL
 HV0594  ______________________________________________________________________
 HV0594* NAD 83(1986) POSITION- 38 08 04.     (N) 076 31 46.     (W)   SCALED
 HV0594* NAVD 88 ORTHO HEIGHT -     0.580 (meters)        1.90  (feet) ADJUSTED
 HV0594  ______________________________________________________________________
 HV0594  GEOID HEIGHT    -        -34.528 (meters)                     GEOID18
 HV0594  DYNAMIC HEIGHT  -          0.580 (meters)        1.90  (feet) COMP
 HV0594  MODELED GRAVITY -    979,996.0   (mgal)                       NAVD 88
 HV0594
 HV0594  VERT ORDER      -  FIRST     CLASS II
 HV0594
 HV0594.The horizontal coordinates were scaled from a map and have
 HV0594.an estimated accuracy of +/- 6 seconds.
 HV0594
 HV0594.The orthometric height was determined by differential leveling and
 HV0594.adjusted by the NATIONAL GEODETIC SURVEY
 HV0594.in June 1991.
 HV0594
 HV0594.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0594.GEOID18 height accuracy estimate available here.
 HV0594
 HV0594.Click photographs - Photos may exist for this station.
 HV0594
 HV0594.The dynamic height is computed by dividing the NAVD 88
 HV0594.geopotential number by the normal gravity value computed on the
 HV0594.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0594.degrees latitude (g = 980.6199 gals.).
 HV0594
 HV0594.The modeled gravity was interpolated from observed gravity values.
 HV0594
 HV0594;                    North         East    Units  Estimated Accuracy
 HV0594;SPC MD       -    52,030.      441,260.      MT  (+/- 180 meters Scaled)
 HV0594
 HV0594_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH659218(NAD 83)
 HV0594
 HV0594                          SUPERSEDED SURVEY CONTROL
 HV0594
 HV0594  NGVD 29 (11/26/84)    0.872  (m)            2.86   (f) ADJUSTED    1 2
 HV0594
 HV0594.Superseded values are not recommended for survey control.
 HV0594
 HV0594.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0594.See file dsdata.pdf to determine how the superseded data were derived.
 HV0594
 HV0594_MARKER: DD = SURVEY DISK
 HV0594_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0594_STAMPING: CRAB USC AND GS 1942
 HV0594_MARK LOGO: USN
 HV0594_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0594+STABILITY: SURFACE MOTION
 HV0594
 HV0594  HISTORY     - Date     Condition        Report By
 HV0594  HISTORY     - 1942     MONUMENTED       USN
 HV0594  HISTORY     - 1965     MARK NOT FOUND   CGS
 HV0594  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0594  HISTORY     - 19990130 MARK NOT FOUND   USPSQD
 HV0594
 HV0594                          STATION DESCRIPTION
 HV0594
 HV0594'DESCRIBED BY COAST AND GEODETIC SURVEY 1965
 HV0594'2 MI W FROM PINEY POINT.
 HV0594'ABOUT 2 MILES WEST OF THE WATER TOWER AT PINEY POINT, ST. MARYS
 HV0594'COUNTY, AT THE EXTREME END OF THE POINT, ABOUT 300 FEET SOUTH OF
 HV0594'THE LIGHTHOUSE, 49 FEET NORTH-NORTHWEST OF A RANGE TOWER, AND
 HV0594'NEAR A WITNESS POST.  A UNITED STATES NAVY DISK AND SET IN CONCRETE.
 HV0594'NOTE-- THE POINT HAS ERODED AWAY SO THAT THE MARKS LOCATION WOULD
 HV0594'BE ABOUT 25 FEET FROM SHORE AND COVERED BY WATER.
 HV0594
 HV0594                          STATION RECOVERY (1971)
 HV0594
 HV0594'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0594'MARK NOT FOUND.
 HV0594
 HV0594                          STATION RECOVERY (1999)
 HV0594
 HV0594'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV0594'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6464 ***********************************************************************
 HV6464  DESIGNATION -  CRAB 1907
 HV6464  PID         -  HV6464
 HV6464  STATE/COUNTY-  MD/DORCHESTER
 HV6464  COUNTRY     -  US
 HV6464  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6464
 HV6464                         *CURRENT SURVEY CONTROL
 HV6464  ______________________________________________________________________
 HV6464* NAD 83(1991) POSITION- 38 10 31.94334(N) 076 01 15.42530(W)   ADJUSTED
 HV6464* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6464  ______________________________________________________________________
 HV6464  GEOID HEIGHT    -        -35.685 (meters)                     GEOID18
 HV6464  LAPLACE CORR    -         -1.90  (seconds)                    DEFLEC18
 HV6464  HORZ ORDER      -  THIRD
 HV6464
 HV6464.The horizontal coordinates were established by classical geodetic methods
 HV6464.and adjusted by the National Geodetic Survey in January 1992.
 HV6464
 HV6464.The orthometric height was scaled from a topographic map.
 HV6464
 HV6464.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6464.GEOID18 height accuracy estimate available here.
 HV6464
 HV6464.Click photographs - Photos may exist for this station.
 HV6464
 HV6464.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6464
 HV6464. The following values were computed from the NAD 83(1991) position.
 HV6464
 HV6464;                    North         East     Units Scale Factor Converg.
 HV6464;SPC MD       -    56,947.521   485,787.271   MT  1.00002398   +0 36 52.1
 HV6464;SPC MD       -   186,835.33  1,593,787.07   sFT  1.00002398   +0 36 52.1
 HV6464;UTM  18      - 4,225,784.279   410,576.148   MT  0.99969848   -0 37 51.8
 HV6464
 HV6464!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6464!SPC MD       -   1.00000564  x   1.00002398  =   1.00002962
 HV6464!UTM  18      -   1.00000564  x   0.99969848  =   0.99970412
 HV6464
 HV6464:                Primary Azimuth Mark                     Grid Az
 HV6464:SPC MD       -  SHARKFIN SHOAL LIGHTHOUSE 1898           044 47 40.2
 HV6464:UTM  18      -  SHARKFIN SHOAL LIGHTHOUSE 1898           046 02 24.1
 HV6464
 HV6464_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1057625784(NAD 83)
 HV6464
 HV6464|---------------------------------------------------------------------|
 HV6464| PID    Reference Object                     Distance      Geod. Az  |
 HV6464|                                                           dddmmss.s |
 HV6464| HU1903 SHARKFIN SHOAL LIGHTHOUSE 1898      APPROX. 4.2 KM 0452432.3 |
 HV6464| HU1890 DEAL ISLAND CHURCH SPIRE            APPROX. 6.7 KM 1093343.5 |
 HV6464|---------------------------------------------------------------------|
 HV6464
 HV6464                          SUPERSEDED SURVEY CONTROL
 HV6464
 HV6464  NAD 83(1986)-  38 10 31.94343(N)    076 01 15.44472(W) AD(       ) 3
 HV6464  NAD 27      -  38 10 31.49500(N)    076 01 16.66400(W) AD(       ) 3
 HV6464  USSD        -  38 10 31.86500(N)    076 01 16.42000(W) AD(       ) 3
 HV6464
 HV6464.Superseded values are not recommended for survey control.
 HV6464
 HV6464.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6464.See file dsdata.pdf to determine how the superseded data were derived.
 HV6464
 HV6464_MARKER: H = DRILL HOLE
 HV6464_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6464_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6464+STABILITY: SURFACE MOTION
 HV6464
 HV6464  HISTORY     - Date     Condition        Report By
 HV6464  HISTORY     - 1907     MONUMENTED       MDSFC
 HV6464  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6464
 HV6464                          STATION DESCRIPTION
 HV6464
 HV6464'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HV6464'STATION IS ON THE WESTERN SHORE OF UPPER TANGIER SOUND, ON
 HV6464'EASTERN SIDE OF BLOODSWORTH ISLAND, ABOUT 1 MILE SE OF ENTRANCE
 HV6464'TO PINEY ISLAND COVE, 1 MILE NE OF ENTRANCE TO GREAT COVE, AND
 HV6464'2-5/8 MILES SW OF SHARKFIN SHOAL LIGHT.  IT IS ABOUT 1 FOOT ABOVE
 HV6464'HIGH WATER, 15 YARDS SW OF SHORE, 35 YARDS W OF SHORE, AND 150
 HV6464'YARDS S-SW OF CRAB HOUSE.  STATION MARK IS MARKED BY A HOLE IN
 HV6464'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6464'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV6464'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HV6464'ARE COUNTER-SUNK IN TOP OF POST.  THE END OF DEAL ISLAND WHARF,
 HV6464'3-3/4 MILES DISTANT, IS  S 81 DEG 33 MIN E.  A TALL PINE
 HV6464'TREE IS DISTANT 1-1/2 MILES,  S 30 DEG 25 MIN W, FROM
 HV6464'THE STATION.
 HV6464
 HV6464                          STATION RECOVERY (1942)
 HV6464
 HV6464'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6464'ON THE POINT MENTIONED IN THE DESCRIPTION, THERE IS EVIDENCE OF
 HV6464'EROSION AND A THOROUGH SEARCH REVEALED NOTHING.
 HV6464'
 HV6464'IT IS RECOMMENDED THAT STATION CRAB BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5854 ***********************************************************************
 HV5854  DESIGNATION -  CRACK
 HV5854  PID         -  HV5854
 HV5854  STATE/COUNTY-  MD/TALBOT
 HV5854  COUNTRY     -  US
 HV5854  USGS QUAD   -  TRAPPE (2016)
 HV5854
 HV5854                         *CURRENT SURVEY CONTROL
 HV5854  ______________________________________________________________________
 HV5854* NAD 83(1991) POSITION- 38 42 25.06792(N) 076 07 23.67651(W)   ADJUSTED
 HV5854* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5854  ______________________________________________________________________
 HV5854  GEOID HEIGHT    -        -34.705 (meters)                     GEOID18
 HV5854  LAPLACE CORR    -         -3.52  (seconds)                    DEFLEC18
 HV5854  HORZ ORDER      -  THIRD
 HV5854
 HV5854.The horizontal coordinates were established by classical geodetic methods
 HV5854.and adjusted by the National Geodetic Survey in January 1992.
 HV5854
 HV5854.The orthometric height was scaled from a topographic map.
 HV5854
 HV5854.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5854.GEOID18 height accuracy estimate available here.
 HV5854
 HV5854.Click photographs - Photos may exist for this station.
 HV5854
 HV5854.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5854
 HV5854. The following values were computed from the NAD 83(1991) position.
 HV5854
 HV5854;                    North         East     Units Scale Factor Converg.
 HV5854;SPC MD       -   115,843.214   476,257.879   MT  0.99995417   +0 33 01.0
 HV5854;SPC MD       -   380,062.28  1,562,522.72   sFT  0.99995417   +0 33 01.0
 HV5854;UTM  18      - 4,284,857.500   402,335.084   MT  0.99971746   -0 42 08.9
 HV5854
 HV5854!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5854!SPC MD       -   1.00000533  x   0.99995417  =   0.99995950
 HV5854!UTM  18      -   1.00000533  x   0.99971746  =   0.99972278
 HV5854
 HV5854:                Primary Azimuth Mark                     Grid Az
 HV5854:SPC MD       -  MISTLE                                   327 53 12.3
 HV5854:UTM  18      -  MISTLE                                   329 08 22.2
 HV5854
 HV5854_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0233584857(NAD 83)
 HV5854
 HV5854|---------------------------------------------------------------------|
 HV5854| PID    Reference Object                     Distance      Geod. Az  |
 HV5854|                                                           dddmmss.s |
 HV5854| HV5850 DEUX                                476.863 METERS 0725128.6 |
 HV5854| HV6009 MISTLE                              APPROX. 0.8 KM 3282613.3 |
 HV5854|---------------------------------------------------------------------|
 HV5854
 HV5854                          SUPERSEDED SURVEY CONTROL
 HV5854
 HV5854  NAD 83(1986)-  38 42 25.06426(N)    076 07 23.69254(W) AD(       ) 3
 HV5854  NAD 27      -  38 42 24.62800(N)    076 07 24.92600(W) AD(       ) 3
 HV5854  USSD        -  38 42 25.02500(N)    076 07 24.72000(W) AD(       ) 3
 HV5854
 HV5854.Superseded values are not recommended for survey control.
 HV5854
 HV5854.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5854.See file dsdata.pdf to determine how the superseded data were derived.
 HV5854
 HV5854_MARKER: H = DRILL HOLE
 HV5854_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5854_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5854
 HV5854  HISTORY     - Date     Condition        Report By
 HV5854  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5854  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5854
 HV5854                          STATION DESCRIPTION
 HV5854
 HV5854'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5854'ON THE SOUTHERN SHORE OF TRIPPE CREEK, ON POINT AT E SIDE OF
 HV5854'ENTRANCE TO SMALL CREEK, ABOUT 1-1/4 MILES FROM WHERE TRIPPE CREEK
 HV5854'ENTERS TRED AVON RIVER.  STATION IS ABOUT 3 FEET ABOVE HIGH
 HV5854'WATER, 13 YARDS S OF EDGE OF BANK, 15 YARDS NE OF SHORE, 40 YARDS
 HV5854'E OF EXTREME END OF POINT, AND AMONG SCATTERING LOCUST TREES.
 HV5854'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5854'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5854'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5854'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE
 HV5854'MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP
 HV5854'2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS
 HV5854'TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 HV5854'3-INCH CEDAR TREE, 13.98 METERS (45.9 FEET), S 46 DEG 43 MIN W.
 HV5854'NAIL IN BLAZE IN 3-INCH LOCUST TREE, 9.98 METERS (32.74 FEET), S
 HV5854'80 DEG 38 MIN W.  NAIL IN BLAZE IN 2-INCH LOCUST TREE, 7.78
 HV5854'METERS, (25.52 FEET), N 41 DEG 43 MIN W.  NEAR PEAK OF SHED, 3/4
 HV5854'MILE, N 6 DEG 49 MIN W.  SPINDLE ON RIGHT ONE OF FOUR CUPOLAS, 7/8
 HV5854'MILE, N 24 DEG 7 MIN E.  NEAR PEAK BETWEEN TWO CHIMNEYS ON LARGE
 HV5854'HOUSE, 1-1/2 MILES, N 46 DEG 34 MIN E. LEFT CORNER OF HOUSE, 1/4
 HV5854'MILE, N 77 DEG 29 MIN E.  RIGHT PEAK OF BARN, 3/4 MILE, S 76 DEG
 HV5854'20 MIN E.  NEAR PEAK OF BARN, 3/4 MILE, S 29 DEG 35 MIN E.
 HV5854
 HV5854                          STATION RECOVERY (1940)
 HV5854
 HV5854'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5854'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  HAS EVIDENTLY BEEN
 HV5854'WASHED OUT.  POINT OF MARSH AND SAND SHOWS CONSIDERABLE EROSION.
 HV5854'REFERENCE TREES DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6674 ***********************************************************************
 HV6674  DESIGNATION -  CRADDOCK MSFC 1908
 HV6674  PID         -  HV6674
 HV6674  STATE/COUNTY-  MD/ST MARYS
 HV6674  COUNTRY     -  US
 HV6674  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6674
 HV6674                         *CURRENT SURVEY CONTROL
 HV6674  ______________________________________________________________________
 HV6674* NAD 83(1991) POSITION- 38 17 31.19438(N) 076 26 50.18150(W)   ADJUSTED
 HV6674* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6674  ______________________________________________________________________
 HV6674  GEOID HEIGHT    -        -34.473 (meters)                     GEOID18
 HV6674  LAPLACE CORR    -         -5.64  (seconds)                    DEFLEC18
 HV6674  HORZ ORDER      -  SECOND
 HV6674
 HV6674.The horizontal coordinates were established by classical geodetic methods
 HV6674.and adjusted by the National Geodetic Survey in January 1992.
 HV6674
 HV6674.The orthometric height was scaled from a topographic map.
 HV6674
 HV6674.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6674.GEOID18 height accuracy estimate available here.
 HV6674
 HV6674.Click photographs - Photos may exist for this station.
 HV6674
 HV6674.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6674
 HV6674. The following values were computed from the NAD 83(1991) position.
 HV6674
 HV6674;                    North         East     Units Scale Factor Converg.
 HV6674;SPC MD       -    69,561.050   448,354.050   MT  1.00000140   +0 20 48.9
 HV6674;SPC MD       -   228,218.21  1,470,974.91   sFT  1.00000140   +0 20 48.9
 HV6674;UTM  18      - 4,239,204.313   373,435.659   MT  0.99979728   -0 53 49.0
 HV6674
 HV6674!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6674!SPC MD       -   1.00000514  x   1.00000140  =   1.00000654
 HV6674!UTM  18      -   1.00000514  x   0.99979728  =   0.99980242
 HV6674
 HV6674:                Primary Azimuth Mark                     Grid Az
 HV6674:SPC MD       -  DRUM PT LIGHTHOUSE                       036 54 35.3
 HV6674:UTM  18      -  DRUM PT LIGHTHOUSE                       038 09 13.2
 HV6674
 HV6674_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7343539204(NAD 83)
 HV6674
 HV6674|---------------------------------------------------------------------|
 HV6674| PID    Reference Object                     Distance      Geod. Az  |
 HV6674|                                                           dddmmss.s |
 HV6674| HV6715 BAREDA HOUSE CUPOLA                 APPROX. 3.9 KM 0260517.6 |
 HV6674| HV6710 DRUM PT LIGHTHOUSE                  APPROX. 3.8 KM 0371524.2 |
 HV6674| HV6704 K OF P FLAG SOLOMONS MSFC           APPROX. 3.1 KM 3481150.7 |
 HV6674| HV6716 FISHSTACK MSFC                      APPROX. 3.5 KM 3544613.6 |
 HV6674|---------------------------------------------------------------------|
 HV6674
 HV6674                          SUPERSEDED SURVEY CONTROL
 HV6674
 HV6674  NAD 83(1986)-  38 17 31.19483(N)    076 26 50.19645(W) AD(       ) 2
 HV6674  NAD 27      -  38 17 30.75600(N)    076 26 51.35300(W) AD(       ) 2
 HV6674  USSD        -  38 17 31.12500(N)    076 26 51.11700(W) AD(       ) 3
 HV6674
 HV6674.Superseded values are not recommended for survey control.
 HV6674
 HV6674.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6674.See file dsdata.pdf to determine how the superseded data were derived.
 HV6674
 HV6674_MARKER: H = DRILL HOLE
 HV6674_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6674_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6674+STABILITY: SURFACE MOTION
 HV6674
 HV6674  HISTORY     - Date     Condition        Report By
 HV6674  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6674  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV6674  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6674
 HV6674                          STATION DESCRIPTION
 HV6674
 HV6674'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6674'STATION IS ON THE SOUTHERN SHORE OF PATUXENT RIVER, ABOUT 2-3/8
 HV6674'MILES SSE OF DRUM POINT LIGHT, AND 1/4 MILE W OF MILLSTONE
 HV6674'LANDING, ON A LAWN, ABOUT 15 FEET ABOVE HIGH WATER, ABOUT 10
 HV6674'YARDS FROM TOP EDGE OF BANK, 15 YARDS FROM BOTTOM EDGE OF BANK
 HV6674'AND FENCE, 30 YARDS E OF EXTREME EDGE OF POINT, 30 YARDS NE OF
 HV6674'TREES ALONG SHORE OF POND, ABOUT 110 YARDS NW OF CRADDOCK
 HV6674'HOUSE AND SEVERAL OUTBUILDINGS AMONG POPLAR TREES, 50 YARDS E
 HV6674'OF FENCE, AND 70 YARDS W OF DRIVEWAY TO HOUSE.  STATION IS
 HV6674'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HV6674'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6674'POST 2 FEET LONG, WITH TOP FLUSH WITH SURFACE OF LAWN.  THE
 HV6674'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6674'POST.  DISTANCES AND BEARINGS FROM STATION OF
 HV6674'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN 14-INCH
 HV6674'STUMP, 5.35 METERS (17.55 FEET), N 13 DEG 19 MIN W.  LEFT
 HV6674'TANGENT OF WOODS ON CARROLL POINT, 1-3/4 MILES, 239
 HV6674'DEG 07 MIN.  NEAR END OF PEAK OF ROOF OF 2 1/2-STORY
 HV6674'BUILDING AT PEARSONS, 1-1/4 MILES, 259 DEG 40 MIN.  CHIMNEY
 HV6674'ON HOTEL AT MILLSTONE, 1/2 MILE, 282 DEG 11 MIN.  14-INCH
 HV6674'COTTONWOOD TREE, 80 YARDS, 286 DEG 09 MIN.  CHIMNEY ON ROOF OF
 HV6674'CRADDOCK 2 1/2-STORY HOUSE, 110 YARDS, 302 DEG 42
 HV6674'MIN.
 HV6674
 HV6674                          STATION RECOVERY (1930)
 HV6674
 HV6674'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6674'STATION IS LOST.  YARD IN WHICH IT IS SUPPOSED TO BE WAS MOWED
 HV6674'AND IF EXISTENT, STATION COULD EASILY HAVE BEEN SEEN.  EITHER
 HV6674'DESTROYED OR COVERED UP.  OWNER DENIED KNOWLEDGE.
 HV6674
 HV6674                          STATION RECOVERY (1943)
 HV6674
 HV6674'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6674'A THOROUGH SEARCH WAS MADE FOR THIS STATION BUT NO TRACE OF IT
 HV6674'WAS FOUND.  THE AREA UPON WHICH IT WAS LOCATED HAS BEEN GRADED
 HV6674'DOWN AND THE STATION HAS BEEN EITHER WASHED OUT OR DUG OUT.
 HV6674'
 HV6674'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4731 ***********************************************************************
 JV4731  DESIGNATION -  CRAIG
 JV4731  PID         -  JV4731
 JV4731  STATE/COUNTY-  MD/WASHINGTON
 JV4731  COUNTRY     -  US
 JV4731  USGS QUAD   -  MASON AND DIXON (2019)
 JV4731
 JV4731                         *CURRENT SURVEY CONTROL
 JV4731  ______________________________________________________________________
 JV4731* NAD 83(1991) POSITION- 39 43 18.43778(N) 077 50 28.21554(W)   ADJUSTED
 JV4731* NAVD 88 ORTHO HEIGHT -   165.    (meters)      541.    (feet) SCALED
 JV4731  ______________________________________________________________________
 JV4731  GEOID HEIGHT    -        -34.337 (meters)                     GEOID18
 JV4731  LAPLACE CORR    -         -0.81  (seconds)                    DEFLEC18
 JV4731  HORZ ORDER      -  SECOND
 JV4731
 JV4731.The horizontal coordinates were established by classical geodetic methods
 JV4731.and adjusted by the National Geodetic Survey in January 1992.
 JV4731
 JV4731.The orthometric height was scaled from a topographic map.
 JV4731
 JV4731.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4731.GEOID18 height accuracy estimate available here.
 JV4731
 JV4731.Click photographs - Photos may exist for this station.
 JV4731
 JV4731.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4731
 JV4731. The following values were computed from the NAD 83(1991) position.
 JV4731
 JV4731;                    North         East     Units Scale Factor Converg.
 JV4731;SPC MD       -   228,472.536   327,875.276   MT  1.00005886   -0 31 40.6
 JV4731;SPC MD       -   749,580.31  1,075,704.13   sFT  1.00005886   -0 31 40.6
 JV4731;SPC PA S     -    43,136.351   592,182.744   MT  1.00003981   -0 03 32.9
 JV4731;SPC PA S     -   141,523.18  1,942,852.89   sFT  1.00003981   -0 03 32.9
 JV4731;SPC WV N     -   136,952.943   742,210.701   MT  0.99994214   +1 03 28.6
 JV4731;SPC WV N     -   449,319.78  2,435,069.61   sFT  0.99994214   +1 03 28.6
 JV4731;UTM  18      - 4,400,739.467   256,478.643   MT  1.00033016   -1 48 59.7
 JV4731
 JV4731!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4731!SPC MD       -   0.99997953  x   1.00005886  =   1.00003839
 JV4731!SPC PA S     -   0.99997953  x   1.00003981  =   1.00001934
 JV4731!SPC WV N     -   0.99997953  x   0.99994214  =   0.99992167
 JV4731!UTM  18      -   0.99997953  x   1.00033016  =   1.00030969
 JV4731
 JV4731:                Primary Azimuth Mark                     Grid Az
 JV4731:SPC MD       -  CRAIG AZ MK                              311 43 24.7
 JV4731:SPC PA S     -  CRAIG AZ MK                              311 15 17.0
 JV4731:SPC WV N     -  CRAIG AZ MK                              310 08 15.5
 JV4731:UTM  18      -  CRAIG AZ MK                              313 00 43.8
 JV4731
 JV4731_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STK5647800739(NAD 83)
 JV4731
 JV4731|---------------------------------------------------------------------|
 JV4731| PID    Reference Object                     Distance      Geod. Az  |
 JV4731|                                                           dddmmss.s |
 JV4731| CJ9574 CRAIG RM 1                           29.053 METERS 01334     |
 JV4731| JV4716 HGR HAGERSTOWN AIRPORT BEACON       APPROX.10.3 KM 0990436.3 |
 JV4731| JV4724 STATE LINE MON CRAIG RM 2            30.106 METERS 27546     |
 JV4731| CJ9573 CRAIG AZ MK                                        3111144.1 |
 JV4731|---------------------------------------------------------------------|
 JV4731
 JV4731                          SUPERSEDED SURVEY CONTROL
 JV4731
 JV4731  NAD 83(1986)-  39 43 18.43627(N)    077 50 28.22550(W) AD(       ) 2
 JV4731  NAD 27      -  39 43 18.09600(N)    077 50 29.23800(W) AD(       ) 2
 JV4731
 JV4731.Superseded values are not recommended for survey control.
 JV4731
 JV4731.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4731.See file dsdata.pdf to determine how the superseded data were derived.
 JV4731
 JV4731_MARKER: DS = TRIANGULATION STATION DISK
 JV4731_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4731_STAMPING: CRAIG 1935
 JV4731_MARK LOGO: CGS
 JV4731_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4731+STABILITY: SURFACE MOTION
 JV4731
 JV4731  HISTORY     - Date     Condition        Report By
 JV4731  HISTORY     - 1935     MONUMENTED       CGS
 JV4731
 JV4731                          STATION DESCRIPTION
 JV4731
 JV4731'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JB)
 JV4731'THIS IS A SECOND-ORDER STATION, LOCATED ABOUT 2-1/2 MILES S OF
 JV4731'WELSH RUN, PENNSYLVANIA, 8 MILES NW OF HAGERSTOWN, MARYLAND, NEAR
 JV4731'THE THIRD STATE LINE MONUMENT W OF CONOCOCHEAGUE CREEK, ON PROPERTY
 JV4731'OWNED BY MR. JOHN O. CRAIG.  THE MARK IS ABOUT 0.3 MILE SE OF THE
 JV4731'RESIDENCE, IN THE W EDGE OF WOODS, 3 PACES E OF A WIRE FENCE, 15
 JV4731'FEET N OF AN 18-INCH OAK TREE, 8 PACES WNW OF A 10-INCH OAK, 10
 JV4731'PACES SW OF A 10-INCH OAK.  PROJECTS 6 INCHES.
 JV4731'
 JV4731'STATION MARK IS A STANDARD BRONZE DISK SET IN CONCRETE.
 JV4731'
 JV4731'REFERENCE MARK NO.1 IS A STANDARD BRONZE DISK SET IN THE TOP OF
 JV4731'A V-SHAPED OUTCROP OF ROCK WHERE THE SLOPE BREAKS SHARPLY TO THE
 JV4731'E.  IT IS 29.053 METERS N OF STATION AND IS 5 PACES E OF THE WIRE
 JV4731'FENCE, 2 PACES W OF THE WOODS PATH TO STATION, 3 PACES NE OF AN
 JV4731'8-INCH CEDAR TREE.  MARK IS SLIGHTLY ABOVE GROUND LEVEL TO W.
 JV4731'
 JV4731'REFERENCE MARK NO.2 IS A STANDARD BRONZE DISK SET IN THE STATE
 JV4731'LINE MONUMENT, WHICH IS 30.106 METERS W OF THE STATION, 27 METERS W
 JV4731'OF WIRE FENCE AT EDGE OF FIELD, 1 PACE E OF EDGE OF ROCK LEDGE, 3
 JV4731'PACES E OF A WIRE FENCE.  MONUMENT IS 11-INCH SQUARE, 18 INCHES
 JV4731'TALL.
 JV4731'
 JV4731'AZIMUTH MARK IS A STANDARD BRONZE DISK SET IN A FLAT BOULDER
 JV4731'3-FEET BY 1-1/2 FEET.  IT PROJECTS 3 INCHES, AND IS ABOUT 0.3
 JV4731'MILE NW OF THE STATION, IN CRAIGS BARNYARD.  IT IS 43 PACES N OF
 JV4731'THE N CORNER OF THE STUCCO RESIDENCE IN W EDGE OF THE FARM ROAD,
 JV4731'5 PACES E OF A FENCE, 10 PACES SW OF A PIG HOUSE.
 JV4731'
 JV4731'TO REACH FROM GREENCASTLE, PENNSYLVANIA, GO TO THE CENTER OF THE
 JV4731'TOWN AND TAKE ROAD LEADING S ALONG CAR TRACKS, KEEPING ON MAIN
 JV4731'PAVED ROAD 5.3 MILES TO MARYLAND STATE LINE AT STATION
 JV4731'SHANK.  CONTINUE STRAIGHT S 1.6 MILES TO THE SMALL VILLAGE
 JV4731'CEARFOSS.  GO S FROM MAIN CROSSING ABOUT 40 YARDS TO AN OILED
 JV4731'T-ROAD RIGHT W.  TAKE THIS ROAD W 2.0 MILES TO A GOOD PAVED
 JV4731'ROAD.  CONTINUE STRAIGHT ON PAVED ROAD, CROSSING A STEEL TRUSS
 JV4731'BRIDGE AT 1.2 MILES.  CONTINUE 0.8 MILE TO A Y RIGHT AT A
 JV4731'BRICK BUILDING ON THE RIGHT, TAKE Y-ROAD RIGHT (NW) 0.7 MILE
 JV4731'TO A T-ROAD BETWEEN ROWS OF CEDAR TREES.  TAKE T-ROAD RIGHT NE
 JV4731'0.2 MILE TO CRAIGS HOUSE ON RIGHT.  CONTINUE THROUGH THE
 JV4731'YARD, BEAR LEFT, THEN TURN RIGHT AT 0.05 MILE.  GO E 0.25 MILE TO
 JV4731'DIM ROAD RIGHT, S, PARALLEL TO AND IN EDGE OF WOODS.  FOLLOW
 JV4731'THIS, KEEPING TO RIGHT, 0.05 MILE TO STATION AT W EDGE OF WOODS.
 JV4731'
 JV4731'A 64-FOOT TOWER WAS USED AND CLEARED ALL LINES OBSERVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4776 ***********************************************************************
 JV4776  DESIGNATION -  CRAIG
 JV4776  PID         -  JV4776
 JV4776  STATE/COUNTY-  MD/CECIL
 JV4776  COUNTRY     -  US
 JV4776  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV4776
 JV4776                         *CURRENT SURVEY CONTROL
 JV4776  ______________________________________________________________________
 JV4776* NAD 83(1991) POSITION- 39 35 44.23689(N) 076 04 03.20411(W)   ADJUSTED
 JV4776* NAVD 88 ORTHO HEIGHT -   122.    (meters)      400.    (feet) SCALED
 JV4776  ______________________________________________________________________
 JV4776  GEOID HEIGHT    -        -33.076 (meters)                     GEOID18
 JV4776  LAPLACE CORR    -         -1.98  (seconds)                    DEFLEC18
 JV4776  HORZ ORDER      -  SECOND
 JV4776
 JV4776.The horizontal coordinates were established by classical geodetic methods
 JV4776.and adjusted by the National Geodetic Survey in January 1992.
 JV4776
 JV4776.The orthometric height was scaled from a topographic map.
 JV4776
 JV4776.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4776.GEOID18 height accuracy estimate available here.
 JV4776
 JV4776.Click photographs - Photos may exist for this station.
 JV4776
 JV4776.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4776
 JV4776. The following values were computed from the NAD 83(1991) position.
 JV4776
 JV4776;                    North         East     Units Scale Factor Converg.
 JV4776;SPC MD       -   214,540.613   480,093.535   MT  1.00002872   +0 35 06.8
 JV4776;SPC MD       -   703,871.99  1,575,106.87   sFT  1.00002872   +0 35 06.8
 JV4776;UTM  18      - 4,383,421.024   408,337.421   MT  0.99970344   -0 40 49.7
 JV4776
 JV4776!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4776!SPC MD       -   0.99998609  x   1.00002872  =   1.00001481
 JV4776!UTM  18      -   0.99998609  x   0.99970344  =   0.99968954
 JV4776
 JV4776:                Primary Azimuth Mark                     Grid Az
 JV4776:SPC MD       -  CRAIG 2 AZ MK                            172 49 22.8
 JV4776:UTM  18      -  CRAIG 2 AZ MK                            174 05 19.3
 JV4776
 JV4776_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0833783421(NAD 83)
 JV4776
 JV4776|---------------------------------------------------------------------|
 JV4776| PID    Reference Object                     Distance      Geod. Az  |
 JV4776|                                                           dddmmss.s |
 JV4776| JU3954 NORTH EAST MICROWAVE TOWER          APPROX.12.4 KM 1073739.2 |
 JV4776| CB1114 CRAIG AZ MK                                        1262936.4 |
 JV4776| CB1116 CRAIG 2 AZ MK                                      1732429.6 |
 JV4776| JV4778 PERRY POINT VET HOSP NE STACK       APPROX. 4.9 KM 1791644.3 |
 JV4776| JV4777 PERRY POINT VET HOSP SW STACK       APPROX. 4.9 KM 1792734.8 |
 JV4776| JV4787 PERRY POINT VET HOSP NW TANK        APPROX. 4.5 KM 1810130.4 |
 JV4776| JV6934 CRAIG RM 1                           23.400 METERS 19924     |
 JV4776| JV4788 CRAIG 2                              45.565 METERS 19933     |
 JV4776| CB1117 CRAIG 2 RM 3                         51.569 METERS 22136     |
 JV4776| JV4782 HAVRE DE GRACE RADIO WASA MAST      APPROX. 5.5 KM 2322754.1 |
 JV4776| CB1115 CRAIG RM 2                           25.801 METERS 32250     |
 JV4776| JV4784 BAINBRIDGE NAVAL STA N TANK         APPROX. 3.2 KM 3241521.6 |
 JV4776| JV4786 BAINBRIDGE NAVAL STA S TANK         APPROX. 1.9 KM 3343553.1 |
 JV4776|---------------------------------------------------------------------|
 JV4776
 JV4776                          SUPERSEDED SURVEY CONTROL
 JV4776
 JV4776  NAD 83(1986)-  39 35 44.23060(N)    076 04 03.20918(W) AD(       ) 2
 JV4776  NAD 27      -  39 35 43.83970(N)    076 04 04.39740(W) AD(       ) 2
 JV4776
 JV4776.Superseded values are not recommended for survey control.
 JV4776
 JV4776.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4776.See file dsdata.pdf to determine how the superseded data were derived.
 JV4776
 JV4776_MARKER: DS = TRIANGULATION STATION DISK
 JV4776_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4776_STAMPING: CRAIG 1958
 JV4776_MARK LOGO: CGS
 JV4776_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4776+STABILITY: SURFACE MOTION
 JV4776
 JV4776  HISTORY     - Date     Condition        Report By
 JV4776  HISTORY     - 1958     MONUMENTED       CGS
 JV4776  HISTORY     - 1962     GOOD             CGS
 JV4776
 JV4776                          STATION DESCRIPTION
 JV4776
 JV4776'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4776'THE STATION IS LOCATED ABOUT 3-1/4 MILES NORTHEAST OF HAVRE DE
 JV4776'GRACE AND ABOUT 2-1/4 MILES NORTH OF PERRYVILLE.  IT IS 35 FEET
 JV4776'SOUTHEAST OF TRIANGLE-BLAZED TREE AND 16 FEET WEST-NORTHWEST OF
 JV4776'WITNESS POST.  THE MARK IS A STANDARD TRIANGULATION STATION DISK
 JV4776'SET IN A 12X12 INCH CONCRETE POST, THE MARK IS SET FLUSH AND THE
 JV4776'DISK IS STAMPED CRAIG 1958.
 JV4776'
 JV4776'REFERENCE MARK NO. 1 IS SET IN THE EDGE OF THE WOODS.  THE MARK
 JV4776'IS A STANDARD REFERENCE MARK DISK SET IN A 12X12 INCH CONCRETE
 JV4776'POST PROJECTING ABOUT 4 INCHES, THE DISK IS STAMPED CRAIG NO 1
 JV4776'1958.
 JV4776'
 JV4776'REFERENCE MARK NO. 2 IS 6 FEET EAST-SOUTHEAST OF A
 JV4776'TRIANGLE-BLAZED TREE.  THE MARK IS A STANDARD REFERENCE MARK DISK
 JV4776'SET IN A 12X12 INCH CONCRETE POST PROJECTING ABOUT 2 INCHES AND
 JV4776'THE DISK IS STAMPED CRAIG NO 2 1958.
 JV4776'
 JV4776'AZIMUTH MARK IS 14 FEET WEST-NORTHWEST OF A TRIANGLE-BLAZED TREE
 JV4776'AND 1-1/2 FEET WEST-NORTHWEST OF WITNESS POST.  THE MARK IS A
 JV4776'STANDARD AZIMUTH MARK DISK SET IN A 12X12 INCH CONCRETE POST
 JV4776'PROJECTING ABOUT 2 INCHES AND THE DISK IS STAMPED CRAIG 1958.
 JV4776'
 JV4776'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV4776'STATE HIGHWAY 222 IN PERRYVILLE, GO NORTHERLY ON STATE HIGHWAY
 JV4776'222 FOR 2.4 MILES TO FORKS AND A GRAVEL DRIVEWAY ON LEFT, TURN
 JV4776'LEFT AND FOLLOW GRAVEL DRIVEWAY FOR 0.2 MILE TO FARM BUILDINGS,
 JV4776'TURN RIGHT AND FOLLOW DIM ROAD (PASSING TO RIGHT OF BARN) FOR
 JV4776'0.15 MILE TO THE STATION AS DESCRIBED.
 JV4776'
 JV4776'TO REACH THE AZIMUTH MARK FROM THE STATION GO SOUTHEAST ACROSS
 JV4776'OPEN FIELD FOR 0.15 MILE TO EDGE OF WOODS AND AZIMUTH MARK IN
 JV4776'WOODS AS DESCRIBED.
 JV4776'
 JV4776'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4776
 JV4776                          STATION RECOVERY (1962)
 JV4776
 JV4776'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (WER)
 JV4776'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED EXCEPT
 JV4776'IT IS NOW AT THE CENTER OF A LARGE CLEARING FOR THE RIGHT-OF-WAY
 JV4776'FOR AN INTERCHANGE TO BE CONSTRUCTED AT THE JUNCTURE OF THE
 JV4776'NORTH-EAST EXPRESSWAY AND U.S. ROUTE NO. 222.
 JV4776'
 JV4776'THE STATION AND R.M. 2 ARE ON THE CENTERLINE OF PROPOSED ROUTE
 JV4776'222 AND WILL PROBABLY BE DESTROYED.
 JV4776'
 JV4776'THE AZIMUTH MARK WAS DESTROYED BEFORE MEASUREMENTS COULD BE
 JV4776'TAKEN TO ESTABLISH CRAIG 2, 1962, WHICH WAS ESTABLISHED ABOUT
 JV4776'150 FEET TO THE SOUTH.
 JV4776'
 JV4776'UNTIL THE MARK IS FINALLY DESTROYED IT CAN BE REACHED AS
 JV4776'DESCRIBED.  THE TRIANGLE-BLAZED TREE HAS BEEN REMOVED, AS HAVE
 JV4776'ALL THE TREES BUT ONE BESIDE REFERENCE MARK NO. 1.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4788 ***********************************************************************
 JV4788  DESIGNATION -  CRAIG 2
 JV4788  PID         -  JV4788
 JV4788  STATE/COUNTY-  MD/CECIL
 JV4788  COUNTRY     -  US
 JV4788  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV4788
 JV4788                         *CURRENT SURVEY CONTROL
 JV4788  ______________________________________________________________________
 JV4788* NAD 83(1991) POSITION- 39 35 42.84470(N) 076 04 03.84341(W)   NO CHECK
 JV4788* NAVD 88 ORTHO HEIGHT -   122.    (meters)      400.    (feet) SCALED
 JV4788  ______________________________________________________________________
 JV4788  GEOID HEIGHT    -        -33.076 (meters)                     GEOID18
 JV4788  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 JV4788  HORZ ORDER      -  THIRD
 JV4788
 JV4788.The horizontal coordinates were established by classical geodetic methods
 JV4788.and adjusted by the National Geodetic Survey in January 1992.
 JV4788
 JV4788.No horizontal observational check was made to the station.
 JV4788
 JV4788.The orthometric height was scaled from a topographic map.
 JV4788
 JV4788.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4788.GEOID18 height accuracy estimate available here.
 JV4788
 JV4788.Click photographs - Photos may exist for this station.
 JV4788
 JV4788.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4788
 JV4788. The following values were computed from the NAD 83(1991) position.
 JV4788
 JV4788;                    North         East     Units Scale Factor Converg.
 JV4788;SPC MD       -   214,497.522   480,078.720   MT  1.00002864   +0 35 06.4
 JV4788;SPC MD       -   703,730.62  1,575,058.27   sFT  1.00002864   +0 35 06.4
 JV4788;UTM  18      - 4,383,378.285   408,321.663   MT  0.99970348   -0 40 50.1
 JV4788
 JV4788!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4788!SPC MD       -   0.99998609  x   1.00002864  =   1.00001473
 JV4788!UTM  18      -   0.99998609  x   0.99970348  =   0.99968958
 JV4788
 JV4788:                Primary Azimuth Mark                     Grid Az
 JV4788:SPC MD       -  CRAIG 2 AZ MK                            170 38 03.4
 JV4788:UTM  18      -  CRAIG 2 AZ MK                            171 53 59.9
 JV4788
 JV4788_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0832183378(NAD 83)
 JV4788
 JV4788|---------------------------------------------------------------------|
 JV4788| PID    Reference Object                     Distance      Geod. Az  |
 JV4788|                                                           dddmmss.s |
 JV4788| JV4776 CRAIG                                45.565 METERS 01933     |
 JV4788| JV6934 CRAIG RM 1                           22.159 METERS 01944     |
 JV4788| CB1116 CRAIG 2 AZ MK                                      1711309.8 |
 JV4788| JV4778 PERRY POINT VET HOSP NE STACK       APPROX. 4.8 KM 1790530.0 |
 JV4788| JV4777 PERRY POINT VET HOSP SW STACK       APPROX. 4.8 KM 1791628.0 |
 JV4788| JV4787 PERRY POINT VET HOSP NW TANK        APPROX. 4.4 KM 1805017.5 |
 JV4788| CB1117 CRAIG 2 RM 3                         19.489 METERS 28256     |
 JV4788|---------------------------------------------------------------------|
 JV4788
 JV4788                          SUPERSEDED SURVEY CONTROL
 JV4788
 JV4788  NAD 83(1986)-  39 35 42.83842(N)    076 04 03.84849(W) AD(       ) 3
 JV4788  NAD 27      -  39 35 42.44750(N)    076 04 05.03670(W) AD(       ) 3
 JV4788
 JV4788.Superseded values are not recommended for survey control.
 JV4788
 JV4788.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4788.See file dsdata.pdf to determine how the superseded data were derived.
 JV4788
 JV4788_MARKER: DS = TRIANGULATION STATION DISK
 JV4788_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4788_STAMPING: CRAIG 2 1962
 JV4788_MARK LOGO: CGS
 JV4788_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4788+STABILITY: SURFACE MOTION
 JV4788
 JV4788  HISTORY     - Date     Condition        Report By
 JV4788  HISTORY     - 1962     MONUMENTED       CGS
 JV4788  HISTORY     - 1963     GOOD             CGS
 JV4788
 JV4788                          STATION DESCRIPTION
 JV4788
 JV4788'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (WER)
 JV4788'STATION IS LOCATED ABOUT 3-1/4 MILES NORTHEAST OF HAVRE DE GRACE
 JV4788'AND ABOUT 2-1/4 MILE NORTH OF PERRYVILLE AT THE INTERCHANGE OF
 JV4788'THE NORTH-EAST EXPRESSWAY AND U.S. ROUTE NO. 222.  CLEARING FOR
 JV4788'THESE HIGHWAYS AND FOR THE INTERCHANGE HAS BEEN COMPLETED IN THIS
 JV4788'AREA, BUT ACTUAL CONSTRUCTION HAS NOT STARTED.  DISTANCES SCALED
 JV4788'FROM PLANS FOR THE INTERCHANGE ARE--CRAIG 2, 1962 - 195 FEET
 JV4788'EAST OF THE EAST EDGE OF PAVEMENT OF RAMP LEADING FROM
 JV4788'SOUTHEAST BOUND LANE OF ROUTE 222 TO NORTH-EAST EXPRESSWAY AND
 JV4788'BALTIMORE.  AND IS 95 FEET WEST OF WEST EDGE OF
 JV4788'PAVEMENT OF SOUTH-EAST BOUND LAND OF ROUTE 222.  THE
 JV4788'STATION IS 4.5 FEET EAST OF WITNESS POST.  STATION MARK IS A
 JV4788'STANDARD DISK SET IN A CONCRETE MONUMENT PROJECTING 2
 JV4788'INCHES FROM GROUND, STAMPED CRAIG 2, 1962.
 JV4788'
 JV4788'REFERENCE MARK NO. 1 IS 8.1 FEET HIGHER THAN STATION.  IT IS
 JV4788'640 FEET SOUTHWEST OF CENTERLINE OF LANE AND DRIVEWAY TO THE
 JV4788'W. J. BARTLETT RESIDENCE, 3.8 FEET NORTHEAST OF A 3 INCH TREE.  A
 JV4788'STANDARD REFERENCE DISK SET IN A 12 X 12 INCH CONCRETE POST
 JV4788'PROJECTING 4 INCHES AND STAMPED CRAIG NO. 1 1958.  THE ARROW
 JV4788'POINTS TOWARD CRAIG 1958 OR DIAMETRICALLY FROM CRAIG 2, 1962.
 JV4788'
 JV4788'REFERENCE MARK NO. 3 IS 2.2 FEET LOWER THAN STATION AND 3 FEET
 JV4788'EAST OF WITNESS POST.  A STANDARD REFERENCE DISK SET IN A 12
 JV4788'INCH CONCRETE CYLINDER PROJECTING 2 INCHES.  THE DISK IS STAMPED
 JV4788'CRAIG 2 NO. 3 1962.
 JV4788'
 JV4788'AZIMUTH MARK IS AT THE EDGE OF WOODS AND AT SOUTH EDGE OF
 JV4788'NORTH-EAST EXPRESSWAY RIGHT-OF-WAY.  IT IS 22.7 FEET NORTH
 JV4788'NORTHEAST OF BLAZED 5 INCH PINE, 19.9 FEET WNW OF BLAZED 6 INCH
 JV4788'PINE, 4.2 FEET NORTH OF BLAZED 5 INCH PINE AND 3.4 FEET SOUTH OF
 JV4788'WITNESS POST SET IN CONCRETE AND NAILED TO PINE STUMP.  A
 JV4788'STANDARD AZIMUTH DISK SET IN A 12 INCH CONCRETE CYLINDER
 JV4788'PROJECTING 2 INCHES.  THE DISK IS STAMPED CRAIG 2 1962.
 JV4788'
 JV4788'TO REACH THE STATION FROM THE NOW EXISTING JUNCTION OF
 JV4788'U.S. HIGHWAY 40 AND STATE HIGHWAY 222 IN PERRYVILLE, GO NORTHERLY
 JV4788'ON ROUTE 222 FOR 2.4 MILES TO A GRAVEL DRIVEWAY OR LANE ON LEFT,
 JV4788'TURN LEFT AND FOLLOW THIS GRAVEL LANE FOR 0.2 MILE TO FARM
 JV4788'BUILDINGS AND DRIVE TO ENTRANCE OF THE BARTLETT RESIDENCE, TURN
 JV4788'RIGHT AND FOLLOW DIRT CONSTRUCTION ROAD (PASSING TO RIGHT OF
 JV4788'BARNS) FOR 0.15 MILE TO R.M. 3 WHICH IS ABOUT 15 FEET ON THE
 JV4788'RIGHT OF THIS ROAD.  THENCE, 64 FEET EAST FROM R.M. 3 TO
 JV4788'STATION.
 JV4788'
 JV4788'TO REACH THE AZIMUTH MARK FROM THE STATION GO SOUTH FOLLOWING
 JV4788'CONSTRUCTION ROADS AND KEEPING JUST TO THE EAST OF THE LINE
 JV4788'BETWEEN THE MOST EASTERLY OF TWO STACKS AND THE STATION.
 JV4788
 JV4788                          STATION RECOVERY (1963)
 JV4788
 JV4788'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (MJT)
 JV4788'THE STATION WAS RECOVERED IN GOOD CONDITION.  CONSTRUCTION OF
 JV4788'THE INTERCHANGE HAS NOT PROGRESSED ENOUGH AT THIS TIME TO WARRANT
 JV4788'REWRITING THE DESCRIPTION.
 JV4788'
 JV4788'HOWEVER, MEASUREMENTS WERE MADE TO THE APPARENT CENTERLINE OF A
 JV4788'ROADBED IN A 10 FOOT CUT FOR THE NEW LOCATION OF STATE HIGHWAY 22.
 JV4788'
 JV4788'CRAIG 2, 1962 IS 94 FEET WEST OF THE CENTERLINE OF THIS ROADBED
 JV4788'AND 49 FEET WEST OF THE TOP OF THE CUT.
 JV4788'
 JV4788'REFERENCE MARK NO. 1 IS 59 FEET WEST OF THE CENTERLINE AND 5 FEET
 JV4788'WEST OF THE TOP OF THE CUT.
 JV4788'
 JV4788'THE AZIMUTH MARK IS ABOUT 20 FEET FROM THE BASE OF A FILL.  THIS
 JV4788'FILL IS ABOUT 15 FEET HIGH AND IS BETWEEN THE STATION AND THE
 JV4788'AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6934 ***********************************************************************
 JV6934  DESIGNATION -  CRAIG RM 1
 JV6934  PID         -  JV6934
 JV6934  STATE/COUNTY-  MD/CECIL
 JV6934  COUNTRY     -  US
 JV6934  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV6934
 JV6934                         *CURRENT SURVEY CONTROL
 JV6934  ______________________________________________________________________
 JV6934* NAD 83(1986) POSITION- 39 35 43.52   (N) 076 04 03.53   (W)   HD_HELD1
 JV6934* NAVD 88 ORTHO HEIGHT -   120.574 (meters)      395.58  (feet) ADJUSTED
 JV6934  ______________________________________________________________________
 JV6934  GEOID HEIGHT    -        -33.076 (meters)                     GEOID18
 JV6934  DYNAMIC HEIGHT  -        120.514 (meters)      395.39  (feet) COMP
 JV6934  MODELED GRAVITY -    980,127.6   (mgal)                       NAVD 88
 JV6934
 JV6934  VERT ORDER      -  SECOND    CLASS I
 JV6934
 JV6934.The horizontal coordinates were determined by differentially corrected
 JV6934.hand held GPS observations or other comparable positioning techniques
 JV6934.and have an estimated accuracy of +/- 3 meters.
 JV6934
 JV6934.The orthometric height was determined by differential leveling and
 JV6934.adjusted by the NATIONAL GEODETIC SURVEY
 JV6934.in June 1995.
 JV6934
 JV6934.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6934.GEOID18 height accuracy estimate available here.
 JV6934
 JV6934.Click photographs - Photos may exist for this station.
 JV6934
 JV6934.The dynamic height is computed by dividing the NAVD 88
 JV6934.geopotential number by the normal gravity value computed on the
 JV6934.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6934.degrees latitude (g = 980.6199 gals.).
 JV6934
 JV6934.The modeled gravity was interpolated from observed gravity values.
 JV6934
 JV6934;                    North         East    Units  Estimated Accuracy
 JV6934;SPC MD       -   214,518.4     480,086.0     MT  (+/- 3 meters HH1 GPS) 
 JV6934
 JV6934_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0832983399(NAD 83)
 JV6934
 JV6934                          SUPERSEDED SURVEY CONTROL
 JV6934
 JV6934.No superseded survey control is available for this station.
 JV6934
 JV6934_MARKER: DR = REFERENCE MARK DISK
 JV6934_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6934_STAMPING: CRAIG NO 1 1958
 JV6934_MARK LOGO: CGS
 JV6934_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6934_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6934+STABILITY: SURFACE MOTION
 JV6934_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6934+SATELLITE: SATELLITE OBSERVATIONS - March 25, 2004
 JV6934
 JV6934  HISTORY     - Date     Condition        Report By
 JV6934  HISTORY     - 1958     MONUMENTED       CGS
 JV6934  HISTORY     - 19910711 GOOD             MDSHA
 JV6934  HISTORY     - 20040325 GOOD             USPSQD
 JV6934
 JV6934                          STATION DESCRIPTION
 JV6934
 JV6934'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6934'THE MARKER IS LOCATED ABOUT 3.25 MI (5.23 KM) NORTHEAST OF HAVRE DE
 JV6934'GRACE, 2.25 MI (3.62 KM) NORTH OF PERRYVILLE AND AT THE INTERSECTION
 JV6934'OF INTERSTATE HIGHWAY 95 AND STATE HIGHWAY 222.  IN TOP OF A SQUARE
 JV6934'CONCRETE POST WHICH IS FLUSH WITH THE SURFACE OF THE GROUND, 55.5 FT
 JV6934'(16.9 M) WEST OF THE CENTER OF STATE HIGHWAY 222, 131.5 FT (40.1 M)
 JV6934'SOUTH OF THE CENTER OF A RAMP LEADING FROM STATE HIGHWAY 222 ONTO
 JV6934'SOUTHBOUND INTERSTATE HIGHWAY 95, 95 FT (29.0 M) NORTH OF A HIGHMAST
 JV6934'LIGHT POLE, 4.0 FT (1.2 M) EAST OF A RIGHT-OF-WAY FENCE AND 0.9 FT
 JV6934'(0.3 M) SOUTHEAST OF A WITNESS POST.
 JV6934
 JV6934                          STATION RECOVERY (2004)
 JV6934
 JV6934'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLG)
 JV6934'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5253 ***********************************************************************
 JV5253  DESIGNATION -  CRAIGHILL CHAN FRONT RNG LT
 JV5253  PID         -  JV5253
 JV5253  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5253  COUNTRY     -  US
 JV5253  USGS QUAD   -  SPARROWS POINT (2016)
 JV5253
 JV5253                         *CURRENT SURVEY CONTROL
 JV5253  ______________________________________________________________________
 JV5253* NAD 83(1991) POSITION- 39 11 19.01163(N) 076 23 39.83785(W)   ADJUSTED
 JV5253* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5253  ______________________________________________________________________
 JV5253  GEOID HEIGHT    -        -33.103 (meters)                     GEOID18
 JV5253  LAPLACE CORR    -         -1.56  (seconds)                    DEFLEC18
 JV5253  HORZ ORDER      -  SECOND
 JV5253
 JV5253.The horizontal coordinates were established by classical geodetic methods
 JV5253.and adjusted by the National Geodetic Survey in January 1992.
 JV5253
 JV5253.The orthometric height was scaled from a topographic map.
 JV5253
 JV5253.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5253.GEOID18 height accuracy estimate available here.
 JV5253
 JV5253.Click photographs - Photos may exist for this station.
 JV5253
 JV5253.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5253
 JV5253. The following values were computed from the NAD 83(1991) position.
 JV5253
 JV5253;                    North         East     Units Scale Factor Converg.
 JV5253;SPC MD       -   169,118.312   452,319.205   MT  0.99996471   +0 22 48.3
 JV5253;SPC MD       -   554,849.00  1,483,983.93   sFT  0.99996471   +0 22 48.3
 JV5253;UTM  18      - 4,338,633.697   379,575.313   MT  0.99977856   -0 52 52.3
 JV5253
 JV5253!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5253!SPC MD       -   1.00000524  x   0.99996471  =   0.99996995
 JV5253!UTM  18      -   1.00000524  x   0.99977856  =   0.99978379
 JV5253
 JV5253:                Primary Azimuth Mark                     Grid Az
 JV5253:SPC MD       -  ESSEX TANK                               332 54 00.8
 JV5253:UTM  18      -  ESSEX TANK                               334 09 41.4
 JV5253
 JV5253_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7957538633(NAD 83)
 JV5253
 JV5253|---------------------------------------------------------------------|
 JV5253| PID    Reference Object                     Distance      Geod. Az  |
 JV5253|                                                           dddmmss.s |
 JV5253| JV5372 ESSEX TANK                          APPROX.15.9 KM 3331649.1 |
 JV5253| JV5252 CRAIGHILL CHAN REAR RNG LT          APPROX. 4.5 KM 3595848.7 |
 JV5253|---------------------------------------------------------------------|
 JV5253
 JV5253                          SUPERSEDED SURVEY CONTROL
 JV5253
 JV5253  NAD 83(1986)-  39 11 19.00669(N)    076 23 39.84723(W) AD(       ) 2
 JV5253  NAD 27      -  39 11 18.61900(N)    076 23 41.01400(W) AD(       ) 2
 JV5253  USSD        -  39 11 18.97800(N)    076 23 40.83200(W) AD(       ) 3
 JV5253
 JV5253.Superseded values are not recommended for survey control.
 JV5253
 JV5253.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5253.See file dsdata.pdf to determine how the superseded data were derived.
 JV5253
 JV5253_MARKER: 14 = NAVIGATION LIGHT
 JV5253_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5253
 JV5253  HISTORY     - Date     Condition        Report By
 JV5253  HISTORY     - 1896     FIRST OBSERVED   CGS
 JV5253  HISTORY     - 1940     GOOD             CGS
 JV5253  HISTORY     - 1964     GOOD             CGS
 JV5253  HISTORY     - 1973     GOOD             NGS
 JV5253  HISTORY     - 1984     GOOD             USPSQD
 JV5253  HISTORY     - 1984     GOOD             NOS
 JV5253  HISTORY     - 20010331 GOOD             NGS
 JV5253
 JV5253                          STATION DESCRIPTION
 JV5253
 JV5253'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5253'STATION IS THE CENTER OF THE LIGHT ON THE CRAIGHILL FRONT RANGE AT
 JV5253'THE ENTRANCE TO BALTIMORE HARBOR.  IT IS A FLASHING WHITE LIGHT ON
 JV5253'TOP OF A STRUCTURE 39 FEET HIGH.  IT WAS BUILT IN 1873.
 JV5253
 JV5253                          STATION RECOVERY (1964)
 JV5253
 JV5253'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (WMR)
 JV5253'STATION RECOVERED IN GOOD CONDITION.  THE DESCRIPTION IS ADEQUATE.
 JV5253
 JV5253                          STATION RECOVERY (1973)
 JV5253
 JV5253'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV5253'THIS STATION WAS NOT VISITED AT THIS DATE, HOWEVER ITS POSITION
 JV5253'WAS VERIFIED BY ANGLES.
 JV5253'
 JV5253'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 14 MILES
 JV5253'SOUTHEAST OF BALTIMORE.
 JV5253
 JV5253                          STATION RECOVERY (1984)
 JV5253
 JV5253'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5253'STATION IN GOOD CONDITION, STATION OBSERVED BY BOAT.
 JV5253
 JV5253                          STATION RECOVERY (1984)
 JV5253
 JV5253'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1984 (WVH)
 JV5253'RECOVERED AS DESCRIBED.  THE LIGHT IS COAST GUARD
 JV5253'LIGHT LIST NO. 2766.
 JV5253'
 JV5253'RECOVERED BY J. DANIEL.
 JV5253
 JV5253                          STATION RECOVERY (2001)
 JV5253
 JV5253'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV5253'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5252 ***********************************************************************
 JV5252  DESIGNATION -  CRAIGHILL CHAN REAR RNG LT
 JV5252  PID         -  JV5252
 JV5252  STATE/COUNTY-  MD/BALTIMORE
 JV5252  COUNTRY     -  US
 JV5252  USGS QUAD   -  SPARROWS POINT (2016)
 JV5252
 JV5252                         *CURRENT SURVEY CONTROL
 JV5252  ______________________________________________________________________
 JV5252* NAD 83(1991) POSITION- 39 13 44.52463(N) 076 23 39.90255(W)   ADJUSTED
 JV5252  ______________________________________________________________________
 JV5252  GEOID HEIGHT    -        -33.060 (meters)                     GEOID18
 JV5252  LAPLACE CORR    -         -1.68  (seconds)                    DEFLEC18
 JV5252  HORZ ORDER      -  THIRD
 JV5252
 JV5252.The horizontal coordinates were established by classical geodetic methods
 JV5252.and adjusted by the National Geodetic Survey in January 1992.
 JV5252
 JV5252.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5252.GEOID18 height accuracy estimate available here.
 JV5252
 JV5252.Click photographs - Photos may exist for this station.
 JV5252
 JV5252.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5252
 JV5252. The following values were computed from the NAD 83(1991) position.
 JV5252
 JV5252;                    North         East     Units Scale Factor Converg.
 JV5252;SPC MD       -   173,605.491   452,287.885   MT  0.99996881   +0 22 48.3
 JV5252;SPC MD       -   569,570.68  1,483,881.17   sFT  0.99996881   +0 22 48.3
 JV5252;UTM  18      - 4,343,119.634   379,642.789   MT  0.99977836   -0 52 55.1
 JV5252
 JV5252_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7964243119(NAD 83)
 JV5252
 JV5252                          SUPERSEDED SURVEY CONTROL
 JV5252
 JV5252  NAD 83(1986)-  39 13 44.51955(N)    076 23 39.91128(W) AD(       ) 3
 JV5252  NAD 27      -  39 13 44.13200(N)    076 23 41.07500(W) AD(       ) 3
 JV5252  USSD        -  39 13 44.48600(N)    076 23 40.89200(W) AD(       ) 3
 JV5252
 JV5252.Superseded values are not recommended for survey control.
 JV5252
 JV5252.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5252.See file dsdata.pdf to determine how the superseded data were derived.
 JV5252
 JV5252_MARKER: 14 = NAVIGATION LIGHT
 JV5252
 JV5252  HISTORY     - Date     Condition        Report By
 JV5252  HISTORY     - 1940     FIRST OBSERVED   CGS
 JV5252  HISTORY     - 1972     GOOD             NGS
 JV5252  HISTORY     - 1984     GOOD             USPSQD
 JV5252  HISTORY     - 1984     GOOD             NOS
 JV5252
 JV5252                          STATION DESCRIPTION
 JV5252
 JV5252'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5252'STATION IS THE CENTER OF THE LIGHT OF THE CRAIGHILL CHANNEL REAR
 JV5252'RANGE, AT THE ENTRANCE TO BALTIMORE HARBOR.  LIGHT IS FIXED WHITE
 JV5252'AND IS ON TOP OF A STRUCTURE 105 FEET HIGH.  STRUCTURE WAS BUILT
 JV5252'IN 1873.
 JV5252
 JV5252                          STATION RECOVERY (1972)
 JV5252
 JV5252'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (EH)
 JV5252'THE STATION WAS RECOVERED AS DESCRIBED, IN GOOD CONDITION.
 JV5252
 JV5252                          STATION RECOVERY (1984)
 JV5252
 JV5252'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5252'STATION OBSERVED FROM A BOAT, STATION APPEARS IN GOOD CONDITION.
 JV5252
 JV5252                          STATION RECOVERY (1984)
 JV5252
 JV5252'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1984 (WVH)
 JV5252'RECOVERED AS DESCRIBED.  THE LIGHT IS COAST GUARD LIGHT
 JV5252'
 JV5252'LIST NO. 2767.
 JV5252'
 JV5252'RECOVERED BY J. DANIEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7086 ***********************************************************************
 HV7086  DESIGNATION -  CRAIN
 HV7086  PID         -  HV7086
 HV7086  STATE/COUNTY-  MD/CHARLES
 HV7086  COUNTRY     -  US
 HV7086  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7086
 HV7086                         *CURRENT SURVEY CONTROL
 HV7086  ______________________________________________________________________
 HV7086* NAD 83(1993) POSITION- 38 16 30.13879(N) 076 52 49.12728(W)   ADJUSTED
 HV7086* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7086  ______________________________________________________________________
 HV7086  GEOID HEIGHT    -        -33.659 (meters)                     GEOID18
 HV7086  LAPLACE CORR    -         -1.57  (seconds)                    DEFLEC18
 HV7086  HORZ ORDER      -  FIRST
 HV7086
 HV7086.The horizontal coordinates were established by classical geodetic methods
 HV7086.and adjusted by the National Geodetic Survey in November 1994.
 HV7086
 HV7086.The orthometric height was scaled from a topographic map.
 HV7086
 HV7086.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7086.GEOID18 height accuracy estimate available here.
 HV7086
 HV7086.Click photographs - Photos may exist for this station.
 HV7086
 HV7086.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7086
 HV7086. The following values were computed from the NAD 83(1993) position.
 HV7086
 HV7086;                    North         East     Units Scale Factor Converg.
 HV7086;SPC MD       -    67,538.946   410,473.052   MT  1.00000444   +0 04 30.4
 HV7086;SPC MD       -   221,584.03  1,346,693.67   sFT  1.00000444   +0 04 30.4
 HV7086;SPC VA N     - 2,068,778.087 3,641,715.973   MT  0.99996614   +1 00 39.2
 HV7086;SPC VA N     - 6,787,316.11 11,947,863.15   sFT  0.99996614   +1 00 39.2
 HV7086;UTM  18      - 4,238,003.935   335,525.063   MT  0.99993317   -1 09 54.0
 HV7086
 HV7086!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7086!SPC MD       -   1.00000517  x   1.00000444  =   1.00000961
 HV7086!SPC VA N     -   1.00000517  x   0.99996614  =   0.99997130
 HV7086!UTM  18      -   1.00000517  x   0.99993317  =   0.99993833
 HV7086
 HV7086:                Primary Azimuth Mark                     Grid Az
 HV7086:SPC MD       -  CRAIN AZ MK                              029 09 25.2
 HV7086:SPC VA N     -  CRAIN AZ MK                              028 13 16.4
 HV7086:UTM  18      -  CRAIN AZ MK                              030 23 49.6
 HV7086
 HV7086_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3552538003(NAD 83)
 HV7086
 HV7086|---------------------------------------------------------------------|
 HV7086| PID    Reference Object                     Distance      Geod. Az  |
 HV7086|                                                           dddmmss.s |
 HV7086| CX2657 CRAIN AZ MK                                        0291355.6 |
 HV7086| HV7082 16                                   11.881 METERS 03727     |
 HV7086| CX2658 CRAIN RM 2                           12.559 METERS 34545     |
 HV7086|---------------------------------------------------------------------|
 HV7086
 HV7086                          SUPERSEDED SURVEY CONTROL
 HV7086
 HV7086  NAD 83(1991)-  38 16 30.13826(N)    076 52 49.13290(W) AD(       ) 1
 HV7086  NAD 83(1986)-  38 16 30.13893(N)    076 52 49.14277(W) AD(       ) 1
 HV7086  NAD 27      -  38 16 29.67800(N)    076 52 50.25400(W) AD(       ) 1
 HV7086  USSD        -  38 16 30.29100(N)    076 52 50.32700(W) AD(       ) 3
 HV7086
 HV7086.Superseded values are not recommended for survey control.
 HV7086
 HV7086.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7086.See file dsdata.pdf to determine how the superseded data were derived.
 HV7086
 HV7086
 HV7086  HISTORY     - Date     Condition        Report By
 HV7086  HISTORY     - 1918     MONUMENTED       USACE
 HV7086  HISTORY     - 1924     GOOD             USACE
 HV7086  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV7086  HISTORY     - 1954     SEE DESCRIPTION  CGS
 HV7086  HISTORY     - 1959     GOOD             CGS
 HV7086  HISTORY     - 1960     GOOD             CGS
 HV7086  HISTORY     - 1961     GOOD             CGS
 HV7086
 HV7086                          STATION DESCRIPTION
 HV7086
 HV7086'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1924
 HV7086'STATION IS ON NE SIDE OF POTOMAC RIVER, N OF ENTRANCE TO NEALS
 HV7086'SOUND, AND BETWEEN THE SOUND AND THE RIVER, ABOUT 2,500 YARDS
 HV7086'BELOW POTOMAC VIEW, AND ALMOST ABREAST OF RED BEACON USED AS RANGE
 HV7086'MARK FOR ENTERING EASTERN CHANNEL.
 HV7086'
 HV7086'STATION IS 30 FEET FROM HIGH-WATER MARK AND 25 FEET OUT FROM FOOT
 HV7086'OF RIDGE 12 FEET HIGH.  IT IS JUST BELOW SMALL PHONE HOUSE AND IS
 HV7086'MARKED BY U.S.E. CONCRETE MONUMENT IN 6-INCH CAST-IRON PIPE, 5
 HV7086'INCHES ABOVE THE SURFACE, CENTERED WITH A 1-INCH BOLT.  AROUND IT
 HV7086'ARE FOUR STAKES, 6 INCHES SQUARE, TOPS FLUSH WITH SURFACE.
 HV7086'
 HV7086'REFERENCE MARK IS BLAZED ON 12-INCH S-SHAPED PERSIMMON TREE BELOW
 HV7086'THE STATION, AT FOOT OF BANK, AND 30 FEET IN FROM HIGH-WATER MARK.
 HV7086'BLAZE IS 3 FEET ABOVE THE GROUND AND 80.05 FEET FROM THE STATION.
 HV7086
 HV7086                          STATION RECOVERY (1942)
 HV7086
 HV7086'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7086'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE U.S.
 HV7086'COAST AND GEODETIC SURVEY PUBLICATION DESCRIPTIONS OF
 HV7086'TRIANGULATION STATIONS, POTOMAC RIVER, PART I, SMITH POINT TO
 HV7086'PERSIMMON POINT, VIRGINIA AND MARYLAND--
 HV7086'
 HV7086'(1) THE SMALL PHONE HOUSE HAS BEEN DESTROYED.
 HV7086'
 HV7086'(2) THE BLAZED 12-INCH PERSIMMON TREE HAS BEEN DESTROYED.
 HV7086'
 HV7086'THE STATION IS LOCATED ON THE EASTERN SHORE OF THE POTOMAC RIVER,
 HV7086'1450 METERS N OF THE NW END OF COBB ISLAND, APPROXIMATELY 100 FEET
 HV7086'W OF A SMALL FRAME DWELLING OWNED BY JACK BROWN, IN THE CENTER OF
 HV7086'A SMALL IRIS CIRCLE ABOUT 50 FEET FROM HIGH-WATER LINE AND ABOUT 5
 HV7086'FEET IN FROM THE EDGE OF A 10-FOOT BLUFF.
 HV7086'
 HV7086'THE STATION IS A BRONZE BUREAU OF ORDNANCE TRIANGULATION DISK,
 HV7086'UNSTAMPED, SET IN THE TOP OF A 6-INCH TERRA COTTA CONCRETE-FILLED
 HV7086'PIPE, PROJECTING ABOUT 3 INCHES ABOVE THE SURFACE OF THE GROUND
 HV7086'AND REINFORCED BY CONCRETE AROUND THE PIPE.  STATION IS IN GOOD
 HV7086'CONDITION.
 HV7086'
 HV7086'TO REACH THE STATION FROM THE VILLAGE OF ROCK POINT, GO N ON STATE
 HV7086'HIGHWAY 3 FOR 3.0 MILES TO A GRAVEL ROAD LEFT LEADING W, THENCE
 HV7086'0.5 MILE TO THE SECOND HOUSE FROM THE END OF THE POINT, OWNED BY
 HV7086'JACK BROWN, AND THE STATION.
 HV7086
 HV7086                          STATION RECOVERY (1954)
 HV7086
 HV7086'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (DAJ)
 HV7086'STATION WAS RECOVERED AS DESCRIBED IN THE 1924 DESCRIPTION BY THE
 HV7086'BUREAU OF ORDNANCE.  A NEW DESCRIPTION FOLLOWS.
 HV7086'
 HV7086'STATION IS LOCATED ABOUT 7 MILES SOUTHEAST OF THE POTOMAC RIVER
 HV7086'BRIDGE, 3 MILES SOUTHEAST OF TOMPKINSVILLE, MARYLAND, 2 MILES
 HV7086'NORTHEAST OF COLONIAL BEACH VIRGINIA, AND ON THE NORTHEAST BANK OF
 HV7086'THE POTOMAC RIVER.  IT IS DIRECTLY BENEATH A THREE LEGGED METAL
 HV7086'RANGE TARGET, 160 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A
 HV7086'HOUSE AND 5 FEET NORTH OF A RETAINING WALL.  THE MARK IS A
 HV7086'CONCRETE POST, 6 INCHES IN DIAMETER, 6 INCHES BELOW THE SURFACE,
 HV7086'AND WITH A 1 INCH BOLT IN THE CENTER.  THE LETTERS U S E ARE CUT
 HV7086'IN THE CONCRETE.
 HV7086'
 HV7086'REFERENCE MARK NO. 2 IS 29 FEET NORTHWEST OF THE RETAINING WALL,
 HV7086'AND 3 FEET WEST OF A 6 INCH CHERRY TREE.  THE MARK PROJECTS 2
 HV7086'INCHES AND THE DISK IS STAMPED CRAIN NO 2 1918 (NOTE 11A).
 HV7086'
 HV7086'16 (BOFO) IS USED AS A REFERENCE MARK.  IT IS 121 FEET SOUTHWEST
 HV7086'OF THE SOUTHWEST CORNER OF THE HOUSE AND 31 FEET NORTH OF THE
 HV7086'RETAINING WALL.  THE MARK IS A 6 INCH TERRA COTTA CONCRETE FILLED
 HV7086'PIPE, PROJECTING 3 INCHES WITH A STANDARD BUREAU OF ORDNANCE
 HV7086'TRIANGULATION DISK ATOP WHICH IS NOT STAMPED.  (THIS MARK IS
 HV7086'CALLED CRAIN IN THE 1942 DESCRIPTION BY W.D.P.)
 HV7086'
 HV7086'AZIMUTH MARK IS 0.3 MILES NORTH OF THE STATION.  IT IS 19 FEET
 HV7086'SOUTHEAST OF THE SOUTHEAST CORNER OF A TOBACCO BARN AND 7 FEET
 HV7086'NORTH OF THE CENTER OF A FARM LANE.  THE MARK PROJECTS 6 INCHES
 HV7086'AND THE DISK IS STAMPED CRAIN 1918.
 HV7086'
 HV7086'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND
 HV7086'STATE HIGHWAY 3, 2 MILES NORTH OF THE POTOMAC RIVER BRIDGE, GO
 HV7086'SOUTHEAST ON HIGHWAY 3 FOR 2.2 MILES TO THE INTERSECTION OF STATE
 HV7086'HIGHWAY 229, CONTINUE ON HIGHWAY 3 FOR 3.4 MILES TO TOMPKINSVILLE.
 HV7086'CONTINUE ON HIGHWAY 3 FOR 2.0 MILES TO A SIDE ROAD, RIGHT.* TURN
 HV7086'RIGHT AND GO SOUTH FOR 0.5 MILE TO A SIDE ROAD LEFT, TURN LEFT
 HV7086'AND GO SOUTHEAST FOR 1.2 MILES TO A HOUSE AND THE STATION AS
 HV7086'DESCRIBED.
 HV7086'
 HV7086'*TO REACH THE AZIMUTH MARK FROM THIS POINT CONTINUE ON HIGHWAY 3
 HV7086'FOR 0.85 MILE TO A SIDE ROAD RIGHT, TURN RIGHT AND GO SOUTH 0.3
 HV7086'MILE TO A FORK, TAKE RIGHT FORK AND GO 0.35 MILE TO A HOUSE ON THE
 HV7086'LEFT AND BARN ON RIGHT AND FARM LANE RIGHT.  TURN RIGHT AND FOLLOW
 HV7086'FARM LANE FOR 0.2 MILE TO A TOBACCO BARN ON LEFT, CONTINUE ON FARM
 HV7086'LANE FOR 0.15 MILE TO A TOBACCO BARN AND THE MARK AS DESCRIBED.
 HV7086'
 HV7086'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 HV7086
 HV7086                          STATION RECOVERY (1959)
 HV7086
 HV7086'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV7086'STATION, 16 (B OF O) AND R.M. 2 RECOVERED AS DESCRIBED BY D.A.J.
 HV7086'IN 1954.  DESCRIPTION OF 1954 ADEQUATE WITH THE ADDITION THAT 16
 HV7086'(B OF O) IS NOW LOCATED IN THE CENTER OF A BED OF IRISES.
 HV7086'DISTANCE AND DIRECTIONS TO 16 (B OF O) AND R.M. 2 WERE CHECKED.
 HV7086'IN THE LIST OF DIRECTIONS OF THE 1954 RECOVERY NOTE, R.M. NO. 1
 HV7086'SHOULD BE R.M. NO.2.
 HV7086
 HV7086                          STATION RECOVERY (1960)
 HV7086
 HV7086'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV7086'STATION MARK, REFERENCE MARK NO.2, AZIMUTH MARK, AND 16 (B. OF O.)
 HV7086'WERE RECOVERED AS DESCRIBED BY D.A.J. IN 1954.
 HV7086'
 HV7086'THAT DESCRIPTION IS ADEQUATE WITH THE FOLLOWING EXCEPTIONS--
 HV7086'
 HV7086'STATE HIGHWAY 3 IS NOW STATE HIGHWAY 259.
 HV7086'
 HV7086'STATE HIGHWAY 229 IS NOW MORGANTOWN ROAD.
 HV7086
 HV7086                          STATION RECOVERY (1961)
 HV7086
 HV7086'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RMS)
 HV7086'STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL
 HV7086'DESCRIPTION IS ADEQUATE FOR RECOVERY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6217 ***********************************************************************
 DN6217  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6217  DESIGNATION -  CRAMER
 DN6217  PID         -  DN6217
 DN6217  STATE/COUNTY-  MD/CECIL
 DN6217  COUNTRY     -  US
 DN6217  USGS QUAD   -  EARLEVILLE (2016)
 DN6217
 DN6217                         *CURRENT SURVEY CONTROL
 DN6217  ______________________________________________________________________
 DN6217* NAD 83(2011) POSITION- 39 25 29.61318(N) 075 55 07.97372(W)   ADJUSTED
 DN6217* NAD 83(2011) ELLIP HT-    -7.685 (meters)        (06/27/12)   ADJUSTED
 DN6217* NAD 83(2011) EPOCH   -  2010.00
 DN6217* NAVD 88 ORTHO HEIGHT -    25.73  (meters)       84.4   (feet) GPS OBS
 DN6217  ______________________________________________________________________
 DN6217  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6217  GEOID HEIGHT    -        -33.402 (meters)                     GEOID03
 DN6217  GEOID HEIGHT    -        -33.428 (meters)                     GEOID18
 DN6217  NAD 83(2011) X  -  1,200,297.724 (meters)                     COMP
 DN6217  NAD 83(2011) Y  - -4,785,259.243 (meters)                     COMP
 DN6217  NAD 83(2011) Z  -  4,028,860.777 (meters)                     COMP
 DN6217  LAPLACE CORR    -         -1.36  (seconds)                    DEFLEC18
 DN6217
 DN6217  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6217  Standards:
 DN6217         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6217            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6217  -------------------------------------------------------------------
 DN6217  NETWORK    0.55   1.08           0.25   0.19   0.55      0.05717061
 DN6217  -------------------------------------------------------------------
 DN6217  Click here for local accuracies and other accuracy information.
 DN6217
 DN6217.The horizontal coordinates were established by GPS observations
 DN6217.and adjusted by the National Geodetic Survey in June 2012.
 DN6217
 DN6217.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6217.been affixed to the stable North American tectonic plate. See 
 DN6217.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6217
 DN6217.The horizontal coordinates are valid at the epoch date displayed above
 DN6217.which is a decimal equivalence of Year/Month/Day.
 DN6217
 DN6217.The orthometric height was determined by GPS observations and a
 DN6217.high-resolution geoid model using precise GPS observation and
 DN6217.processing techniques.
 DN6217
 DN6217.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6217.GEOID18 height accuracy estimate available here.
 DN6217
 DN6217.Click photographs - Photos may exist for this station.
 DN6217
 DN6217.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6217
 DN6217.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6217
 DN6217.The ellipsoidal height was determined by GPS observations
 DN6217.and is referenced to NAD 83.
 DN6217
 DN6217. The following values were computed from the NAD 83(2011) position.
 DN6217
 DN6217;                    North         East     Units Scale Factor Converg.
 DN6217;SPC MD       -   195,727.360   493,088.119   MT  0.99999570   +0 40 42.8
 DN6217;SPC MD       -   642,148.85  1,617,739.94   sFT  0.99999570   +0 40 42.8
 DN6217;UTM  18      - 4,364,331.871   420,909.841   MT  0.99967701   -0 35 00.9
 DN6217
 DN6217!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6217!SPC MD       -   1.00000121  x   0.99999570  =   0.99999691
 DN6217!UTM  18      -   1.00000121  x   0.99967701  =   0.99967822
 DN6217
 DN6217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2090964331(NAD 83)
 DN6217
 DN6217                          SUPERSEDED SURVEY CONTROL
 DN6217
 DN6217  NAD 83(2007)-  39 25 29.61333(N)    075 55 07.97444(W) AD(2002.00) 1
 DN6217  ELLIP H (02/23/12)   -7.652  (m)                       GP(2002.00) 4 1
 DN6217
 DN6217.Superseded values are not recommended for survey control.
 DN6217
 DN6217.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6217.See file dsdata.pdf to determine how the superseded data were derived.
 DN6217
 DN6217_MARKER: DD = SURVEY DISK
 DN6217_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6217_STAMPING: CRAMER 2008
 DN6217_MARK LOGO: MD-015
 DN6217_PROJECTION: FLUSH
 DN6217_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6217_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6217+STABILITY: SURFACE MOTION
 DN6217_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6217+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6217
 DN6217  HISTORY     - Date     Condition        Report By
 DN6217  HISTORY     - 20081204 MONUMENTED       GWS
 DN6217
 DN6217                          STATION DESCRIPTION
 DN6217
 DN6217'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6217'THE STATION IS LOCATED ABOUT 6.2 MI (10.0 KM) NORTH-NORTHWEST OF
 DN6217'GALENA, 3.1 MI (5.0 KM) WEST-NORTHWEST OF CECILTON AND 0.7 MI (1.1 KM)
 DN6217'NORTH OF EARLEVILLE.
 DN6217'
 DN6217'TO REACH FROM THE JUNCTION OF MD 213 AND MD 282, GO WEST ON MD 282 FOR
 DN6217'3.48 MI (5.6 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO
 DN6217'EAST-NORTHEAST ON GLEBE ROAD FOR 0.02 MI (0.0 KM) TO THE STATION ON
 DN6217'THE LEFT.
 DN6217'
 DN6217'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6217'CONCRETE MONUMENT, 16.2 FT (4.9 M) NORTHWEST OF THE CENTERLINE OF
 DN6217'GLEBE ROAD, 103.8 FT (31.6 M) NORTHEAST OF THE GLEBE ROAD SIGN ON THE
 DN6217'SOUTHEAST SIDE OF THE INTERSECTION OF GLEBE ROAD AND CRYSTAL BEACH
 DN6217'ROAD AND 295.5 FT (90.1 M) WEST OF THE NORTH SASSAFRAS CHURCH HISTORIC
 DN6217'SIGN ON THE EAST SIDE OF THE INTERSECTION OF GLEBE ROAD AND OLD
 DN6217'CRYSTAL BEACH ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6732 ***********************************************************************
 JV6732  DESIGNATION -  CRANBERRY
 JV6732  PID         -  JV6732
 JV6732  STATE/COUNTY-  MD/HARFORD
 JV6732  COUNTRY     -  US
 JV6732  USGS QUAD   -  PERRYMAN (2016)
 JV6732
 JV6732                         *CURRENT SURVEY CONTROL
 JV6732  ______________________________________________________________________
 JV6732* NAD 83(2011) POSITION- 39 29 14.22357(N) 076 12 00.58284(W)   ADJUSTED
 JV6732* NAD 83(2011) ELLIP HT-   -11.115 (meters)        (06/27/12)   ADJUSTED
 JV6732* NAD 83(2011) EPOCH   -  2010.00
 JV6732* NAVD 88 ORTHO HEIGHT -    22.028 (meters)       72.27  (feet) ADJUSTED
 JV6732  ______________________________________________________________________
 JV6732  GEOID HEIGHT    -        -33.120 (meters)                     GEOID18
 JV6732  NAD 83(2011) X  -  1,175,740.590 (meters)                     COMP
 JV6732  NAD 83(2011) Y  - -4,786,816.622 (meters)                     COMP
 JV6732  NAD 83(2011) Z  -  4,034,207.005 (meters)                     COMP
 JV6732  LAPLACE CORR    -         -2.55  (seconds)                    DEFLEC18
 JV6732  DYNAMIC HEIGHT  -         22.017 (meters)       72.23  (feet) COMP
 JV6732  MODELED GRAVITY -    980,118.8   (mgal)                       NAVD 88
 JV6732
 JV6732  VERT ORDER      -  SECOND    CLASS I
 JV6732
 JV6732  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6732  Standards:
 JV6732         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6732            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6732  -------------------------------------------------------------------
 JV6732  NETWORK    1.66   4.86           0.71   0.60   2.48      0.42575621
 JV6732  -------------------------------------------------------------------
 JV6732  Click here for local accuracies and other accuracy information.
 JV6732
 JV6732.The horizontal coordinates were established by GPS observations
 JV6732.and adjusted by the National Geodetic Survey in June 2012.
 JV6732
 JV6732.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6732.been affixed to the stable North American tectonic plate. See 
 JV6732.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6732
 JV6732.The horizontal coordinates are valid at the epoch date displayed above
 JV6732.which is a decimal equivalence of Year/Month/Day.
 JV6732
 JV6732.The orthometric height was determined by differential leveling and
 JV6732.adjusted by the NATIONAL GEODETIC SURVEY
 JV6732.in September 2008.
 JV6732
 JV6732.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6732.GEOID18 height accuracy estimate available here.
 JV6732
 JV6732.Click photographs - Photos may exist for this station.
 JV6732
 JV6732.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6732
 JV6732.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6732
 JV6732.The ellipsoidal height was determined by GPS observations
 JV6732.and is referenced to NAD 83.
 JV6732
 JV6732.The dynamic height is computed by dividing the NAVD 88
 JV6732.geopotential number by the normal gravity value computed on the
 JV6732.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6732.degrees latitude (g = 980.6199 gals.).
 JV6732
 JV6732.The modeled gravity was interpolated from observed gravity values.
 JV6732
 JV6732. The following values were computed from the NAD 83(2011) position.
 JV6732
 JV6732;                    North         East     Units Scale Factor Converg.
 JV6732;SPC MD       -   202,404.584   468,808.927   MT  1.00000673   +0 30 07.2
 JV6732;SPC MD       -   664,055.71  1,538,083.95   sFT  1.00000673   +0 30 07.2
 JV6732;UTM  18      - 4,371,540.754   396,791.003   MT  0.99973115   -0 45 47.7
 JV6732
 JV6732!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6732!SPC MD       -   1.00000174  x   1.00000673  =   1.00000847
 JV6732!UTM  18      -   1.00000174  x   0.99973115  =   0.99973289
 JV6732
 JV6732:                Primary Azimuth Mark                     Grid Az
 JV6732:SPC MD       -  CRANBERRY AZ MK                          060 20 50.7
 JV6732:UTM  18      -  CRANBERRY AZ MK                          061 36 45.6
 JV6732
 JV6732_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9679171540(NAD 83)
 JV6732
 JV6732|---------------------------------------------------------------------|
 JV6732| PID    Reference Object                     Distance      Geod. Az  |
 JV6732|                                                           dddmmss.s |
 JV6732| JV6733 CRANBERRY AZ MK                     APPROX. 1.3 KM 0605057.9 |
 JV6732|---------------------------------------------------------------------|
 JV6732
 JV6732                          SUPERSEDED SURVEY CONTROL
 JV6732
 JV6732  NAD 83(2007)-  39 29 14.22363(N)    076 12 00.58360(W) AD(2002.00) 0
 JV6732  ELLIP H (02/10/07)  -11.103  (m)                       GP(2002.00)    
 JV6732  ELLIP H (09/18/02)  -11.076  (m)                       GP(       ) 4 2
 JV6732  NAD 83(1991)-  39 29 14.22310(N)    076 12 00.58418(W) AD(       ) 1
 JV6732  ELLIP H (01/27/92)  -11.109  (m)                       GP(       ) 4 1
 JV6732  NAD 83(1986)-  39 29 14.21698(N)    076 12 00.59031(W) AD(       ) 1
 JV6732  NGVD 29 (06/18/91)   22.3    (m)  UNKNOWN  model used  GPS OBS        
 JV6732
 JV6732.Superseded values are not recommended for survey control.
 JV6732
 JV6732.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6732.See file dsdata.pdf to determine how the superseded data were derived.
 JV6732
 JV6732_MARKER: DD = SURVEY DISK
 JV6732_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6732_STAMPING: 10 CRANBERRY 1989
 JV6732_MARK LOGO: MD-025
 JV6732_PROJECTION: FLUSH
 JV6732_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6732_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6732+STABILITY: SURFACE MOTION
 JV6732_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6732+SATELLITE: SATELLITE OBSERVATIONS - July 02, 2008
 JV6732
 JV6732  HISTORY     - Date     Condition        Report By
 JV6732  HISTORY     - 1989     MONUMENTED       RDA
 JV6732  HISTORY     - 19970617 GOOD             DMW
 JV6732  HISTORY     - 20030522 GOOD             GEOCAC
 JV6732  HISTORY     - 20080702 GOOD             MDSHA
 JV6732
 JV6732                          STATION DESCRIPTION
 JV6732
 JV6732'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6732'THE STATION IS LOCATED IN SOUTHERN HARFORD COUNTY, MARYLAND ABOUT 0.5
 JV6732'MILE SOUTHWEST OF THE TOWN OF ABERDEEN ON U.S. HIGHWAY 40.
 JV6732'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV6732'STATE HIGHWAY 7 PROCEED SOUTHWEST ON HIGHWAY 40 ABOUT 0.2 MILE TO THE
 JV6732'STATION ON THE LEFT.
 JV6732'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6732'ABOUT 1 INCH BELOW GROUND STAMPED 10 CRANBERRY 1989.  THE STATION IS
 JV6732'21.2 FEET NORTHWEST FROM G AND E POLE NUMBER 143716, 6.0 FEET EAST
 JV6732'FROM THE SOUTHEAST CORNER OF A C AND P TELEPHONE STAND, AND 4.6 FEET
 JV6732'SOUTHEAST FROM THE FACE OF CURB SOUTH OF THE EAST BOUND LANES OF
 JV6732'HIGHWAY 40.
 JV6732
 JV6732                          STATION RECOVERY (1997)
 JV6732
 JV6732'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (RPN)
 JV6732'RECOVERED AS DESCRIBED.
 JV6732
 JV6732                          STATION RECOVERY (2003)
 JV6732
 JV6732'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV6732'STATION IS LOCATED ABOUT THREE INCHES BELOW THE SURFACE AND IS APPROX.
 JV6732'18 FEET NORTH OF AN MCI CABLE ROUTE MARKER ON THE SOUTH SHOULDER OF
 JV6732'U.S. 40 AT STREET ADDRESS 1237. THE TELEPHONE STAND MENTIONED IN THE
 JV6732'1989 DESCRIPTION HAS BEEN REMOVED, LEAVING ONLY A CONCRETE PAD.
 JV6732
 JV6732                          STATION RECOVERY (2008)
 JV6732
 JV6732'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV6732'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6733 ***********************************************************************
 JV6733  DESIGNATION -  CRANBERRY AZ MK
 JV6733  PID         -  JV6733
 JV6733  STATE/COUNTY-  MD/HARFORD
 JV6733  COUNTRY     -  US
 JV6733  USGS QUAD   -  PERRYMAN (2016)
 JV6733
 JV6733                         *CURRENT SURVEY CONTROL
 JV6733  ______________________________________________________________________
 JV6733* NAD 83(2011) POSITION- 39 29 34.93388(N) 076 11 12.65194(W)   ADJUSTED
 JV6733* NAD 83(2011) ELLIP HT-   -13.636 (meters)        (06/27/12)   ADJUSTED
 JV6733* NAD 83(2011) EPOCH   -  2010.00
 JV6733* NAVD 88 ORTHO HEIGHT -    19.528 (meters)       64.07  (feet) ADJUSTED
 JV6733  ______________________________________________________________________
 JV6733  GEOID HEIGHT    -        -33.124 (meters)                     GEOID18
 JV6733  NAD 83(2011) X  -  1,176,755.454 (meters)                     COMP
 JV6733  NAD 83(2011) Y  - -4,786,146.953 (meters)                     COMP
 JV6733  NAD 83(2011) Z  -  4,034,698.316 (meters)                     COMP
 JV6733  LAPLACE CORR    -         -2.59  (seconds)                    DEFLEC18
 JV6733  DYNAMIC HEIGHT  -         19.518 (meters)       64.04  (feet) COMP
 JV6733  MODELED GRAVITY -    980,120.4   (mgal)                       NAVD 88
 JV6733
 JV6733  VERT ORDER      -  SECOND    CLASS I
 JV6733
 JV6733  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6733  Standards:
 JV6733         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6733            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6733  -------------------------------------------------------------------
 JV6733  NETWORK    1.91   5.15           0.84   0.64   2.63      0.48524390
 JV6733  -------------------------------------------------------------------
 JV6733  Click here for local accuracies and other accuracy information.
 JV6733
 JV6733.The horizontal coordinates were established by GPS observations
 JV6733.and adjusted by the National Geodetic Survey in June 2012.
 JV6733
 JV6733.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6733.been affixed to the stable North American tectonic plate. See 
 JV6733.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6733
 JV6733.The horizontal coordinates are valid at the epoch date displayed above
 JV6733.which is a decimal equivalence of Year/Month/Day.
 JV6733
 JV6733.The orthometric height was determined by differential leveling and
 JV6733.adjusted by the NATIONAL GEODETIC SURVEY
 JV6733.in September 2008.
 JV6733
 JV6733.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6733.GEOID18 height accuracy estimate available here.
 JV6733
 JV6733.Click photographs - Photos may exist for this station.
 JV6733
 JV6733.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6733
 JV6733.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6733
 JV6733.The ellipsoidal height was determined by GPS observations
 JV6733.and is referenced to NAD 83.
 JV6733
 JV6733.The dynamic height is computed by dividing the NAVD 88
 JV6733.geopotential number by the normal gravity value computed on the
 JV6733.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6733.degrees latitude (g = 980.6199 gals.).
 JV6733
 JV6733.The modeled gravity was interpolated from observed gravity values.
 JV6733
 JV6733. The following values were computed from the NAD 83(2011) position.
 JV6733
 JV6733;                    North         East     Units Scale Factor Converg.
 JV6733;SPC MD       -   203,053.394   469,948.604   MT  1.00000781   +0 30 37.3
 JV6733;SPC MD       -   666,184.34  1,541,823.04   sFT  1.00000781   +0 30 37.3
 JV6733;UTM  18      - 4,372,164.066   397,944.408   MT  0.99972823   -0 45 17.6
 JV6733
 JV6733!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6733!SPC MD       -   1.00000214  x   1.00000781  =   1.00000995
 JV6733!UTM  18      -   1.00000214  x   0.99972823  =   0.99973037
 JV6733
 JV6733:                Primary Azimuth Mark                     Grid Az
 JV6733:SPC MD       -  CRANBERRY                                240 20 51.1
 JV6733:UTM  18      -  CRANBERRY                                241 36 46.0
 JV6733
 JV6733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9794472164(NAD 83)
 JV6733
 JV6733|---------------------------------------------------------------------|
 JV6733| PID    Reference Object                     Distance      Geod. Az  |
 JV6733|                                                           dddmmss.s |
 JV6733| JV6732 CRANBERRY                           APPROX. 1.3 KM 2405128.4 |
 JV6733|---------------------------------------------------------------------|
 JV6733
 JV6733                          SUPERSEDED SURVEY CONTROL
 JV6733
 JV6733  NAD 83(2007)-  39 29 34.93394(N)    076 11 12.65269(W) AD(2002.00) 0
 JV6733  ELLIP H (02/10/07)  -13.624  (m)                       GP(2002.00)    
 JV6733  ELLIP H (09/18/02)  -13.598  (m)                       GP(       ) 4 2
 JV6733  NAD 83(1991)-  39 29 34.93338(N)    076 11 12.65330(W) AD(       ) 1
 JV6733  ELLIP H (01/27/92)  -13.631  (m)                       GP(       ) 4 1
 JV6733  NAD 83(1986)-  39 29 34.92726(N)    076 11 12.65944(W) AD(       ) 1
 JV6733  NGVD 29 (06/18/91)   19.7    (m)  UNKNOWN  model used  GPS OBS        
 JV6733
 JV6733.Superseded values are not recommended for survey control.
 JV6733
 JV6733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6733.See file dsdata.pdf to determine how the superseded data were derived.
 JV6733
 JV6733_MARKER: DZ = AZIMUTH MARK DISK
 JV6733_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6733_STAMPING: 10 CRANBERRY 1989
 JV6733_MARK LOGO: MD-025
 JV6733_PROJECTION: FLUSH
 JV6733_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6733_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6733+STABILITY: SURFACE MOTION
 JV6733_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6733+SATELLITE: SATELLITE OBSERVATIONS - July 02, 2008
 JV6733
 JV6733  HISTORY     - Date     Condition        Report By
 JV6733  HISTORY     - 1989     MONUMENTED       RDA
 JV6733  HISTORY     - 20030522 GOOD             GEOCAC
 JV6733  HISTORY     - 20080702 GOOD             MDSHA
 JV6733
 JV6733                          STATION DESCRIPTION
 JV6733
 JV6733'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6733'THE REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTHEAST ALONG
 JV6733'HIGHWAY 40 ABOUT 0.75 MILE TO THE STATION ON THE LEFT.
 JV6733'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6733'ABOUT 1 INCH BELOW GROUND STAMPED 10 CRANBERRY 1989.  THE MARK IS 27.1
 JV6733'FEET SOUTHWEST FROM A G AND E POLE NUMBER 475987, 111.3 FEET EAST FROM
 JV6733'THE EAST CORNER OF A STORM SEWER DROP INLET, 15.3 FEET NORTHWEST FROM
 JV6733'THE EDGE OF PAVEMENT NORTH OF THE WEST BOUND LANES OF HIGHWAY 40 AND
 JV6733'4302.50 FEET FROM THE STATION.
 JV6733
 JV6733                          STATION RECOVERY (2003)
 JV6733
 JV6733'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV6733'STATION IS LOCATED APPROX. 2 FEET SOUTH OF AN ORANGE CARSONITE WITNESS
 JV6733'POST ON THE NORTH SHOULDER OF U.S. 40 BETWEEN A HIGHWAY DEPT. IGLOO
 JV6733'AND THE WAREHOUSE BUILDING AT STREET ADDRESS 600
 JV6733
 JV6733                          STATION RECOVERY (2008)
 JV6733
 JV6733'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV6733'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6708 ***********************************************************************
 HV6708  DESIGNATION -  CRANE MSFC 1908
 HV6708  PID         -  HV6708
 HV6708  STATE/COUNTY-  MD/ST MARYS
 HV6708  COUNTRY     -  US
 HV6708  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6708
 HV6708                         *CURRENT SURVEY CONTROL
 HV6708  ______________________________________________________________________
 HV6708* NAD 83(1991) POSITION- 38 19 13.00590(N) 076 28 45.74668(W)   ADJUSTED
 HV6708* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6708  ______________________________________________________________________
 HV6708  GEOID HEIGHT    -        -34.332 (meters)                     GEOID18
 HV6708  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 HV6708  HORZ ORDER      -  SECOND
 HV6708
 HV6708.The horizontal coordinates were established by classical geodetic methods
 HV6708.and adjusted by the National Geodetic Survey in January 1992.
 HV6708
 HV6708.The orthometric height was scaled from a topographic map.
 HV6708
 HV6708.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6708.GEOID18 height accuracy estimate available here.
 HV6708
 HV6708.Click photographs - Photos may exist for this station.
 HV6708
 HV6708.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6708
 HV6708. The following values were computed from the NAD 83(1991) position.
 HV6708
 HV6708;                    North         East     Units Scale Factor Converg.
 HV6708;SPC MD       -    72,683.739   445,527.859   MT  0.99999653   +0 19 36.3
 HV6708;SPC MD       -   238,463.23  1,461,702.65   sFT  0.99999653   +0 19 36.3
 HV6708;UTM  18      - 4,242,386.995   370,678.474   MT  0.99980596   -0 55 02.7
 HV6708
 HV6708!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6708!SPC MD       -   1.00000511  x   0.99999653  =   1.00000164
 HV6708!UTM  18      -   1.00000511  x   0.99980596  =   0.99981107
 HV6708
 HV6708:                Primary Azimuth Mark                     Grid Az
 HV6708:SPC MD       -  MILL                                     324 41 53.6
 HV6708:UTM  18      -  MILL                                     325 56 32.6
 HV6708
 HV6708_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7067842386(NAD 83)
 HV6708
 HV6708|---------------------------------------------------------------------|
 HV6708| PID    Reference Object                     Distance      Geod. Az  |
 HV6708|                                                           dddmmss.s |
 HV6708| HV6721 TOWN MSFC 1907                      407.201 METERS 0624202.5 |
 HV6708| HV6698 AVONDALE CATHOLIC CHURCH MSFC       APPROX. 1.8 KM 0661624.2 |
 HV6708| HV6711 SOLOMONS ISLAND ME CHURCH           APPROX. 1.7 KM 0790658.2 |
 HV6708| HV6700 MILL                                APPROX. 1.9 KM 3250129.9 |
 HV6708|---------------------------------------------------------------------|
 HV6708
 HV6708                          SUPERSEDED SURVEY CONTROL
 HV6708
 HV6708  NAD 83(1986)-  38 19 13.00587(N)    076 28 45.76099(W) AD(       ) 2
 HV6708  NAD 27      -  38 19 12.55700(N)    076 28 46.91100(W) AD(       ) 2
 HV6708  USSD        -  38 19 12.93000(N)    076 28 46.67000(W) AD(       ) 3
 HV6708
 HV6708.Superseded values are not recommended for survey control.
 HV6708
 HV6708.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6708.See file dsdata.pdf to determine how the superseded data were derived.
 HV6708
 HV6708_MARKER: H = DRILL HOLE
 HV6708_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6708_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6708+STABILITY: SURFACE MOTION
 HV6708
 HV6708  HISTORY     - Date     Condition        Report By
 HV6708  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6708  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV6708  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6708
 HV6708                          STATION DESCRIPTION
 HV6708
 HV6708'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6708'STATION IS ON THE SW SIDE OF PATUXENT RIVER, ON NE SIDE OF TOWN
 HV6708'CREEK, ABOUT 1/4 MILE SW OF TOWN POINT, IN A CULTIVATED FIELD, ON
 HV6708'JUDGE CRANES FARM, ABOUT 8 FEET ABOVE HIGH-WATER MARK, 58 YARDS
 HV6708'ENE OF TOWN CREEK, 105 YARDS W OF A FENCE, 115 YARDS WNW OF A
 HV6708'LARGE CHERRY TREE, 200 YARDS SE OF SEVERAL DETACHED BUILDINGS, AND
 HV6708'20 YARDS E OF TOP OF RAVINE.  STATION MARK IS MARKED BY A HOLE
 HV6708'IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6708'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP 10
 HV6708'INCHES BELOW SURFACE OF GROUND.  THE LETTERS M.S.F.C. AND
 HV6708'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES AND
 HV6708'AZIMUTHS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6708'AS FOLLOWS--CANNING-HOUSE STACK, 1/4 MILE, 14 DEG 18 MIN.  HOUSE ON
 HV6708'POINT, 1/4 MILE, 42 DEG 11 MIN.  CHIMNEY ON HOUSE, 3/4 MILE, 101
 HV6708'DEG 21 MIN.  LIGHTNING ROD ON CUPOLA OF JUDGE CRANES BARN, 1/4
 HV6708'MILE, 133 DEG 52 MIN.  RIGHT TANGENT OF ST. CUTHBERT WHARF, 2
 HV6708'3/4 MILES, 156 DEG 59 MIN.  NEAR END OF PEAK OF ROOF OF
 HV6708'MARBURGER HOUSE, 7/8 MILE, 177 DEG 40 MIN.  MIDDLE OF
 HV6708'GATEWAY, 1/8 MILE, 212 DEG 14 MIN.  OAK TREE ON OPPOSITE SHORE
 HV6708'OF PATUXENT RIVER, 1 MILE 216 DEG 08 MIN.  STACK ON ICE PLANT, 1
 HV6708'1/4 MILES, 254 DEG 16 MIN.  METHODIST EPISCOPAL CHURCH TOWER,
 HV6708'1-1/4 MILES, 259 DEG 06 MIN.  4-FOOT CHERRY TREE, 115 YARDS, 288
 HV6708'DEG 17 MIN.
 HV6708
 HV6708                          STATION RECOVERY (1930)
 HV6708
 HV6708'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6708'COULD NOT LOCATE STATION.
 HV6708
 HV6708                          STATION RECOVERY (1943)
 HV6708
 HV6708'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6708'A THOROUGH SEARCH WAS MADE OF THE LOCALITY AND SEVERAL OF THE LOCAL
 HV6708'RESIDENTS WERE INTERVIEWED BUT THE STATION WAS NOT RECOVERED.  THIS
 HV6708'STATION WAS ORIGINALLY SET 10 INCHES BELOW THE SURFACE AND NO
 HV6708'REFERENCE MARK WAS SET, AND SINCE PREVIOUS ATTEMPTS AT RECOVERY
 HV6708'HAVE BEEN UNSUCCESSFUL, IT IS RECOMMENDED THAT THIS STATION BE
 HV6708'CONSIDERED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6206 ***********************************************************************
 HV6206  DESIGNATION -  CRANEY
 HV6206  PID         -  HV6206
 HV6206  STATE/COUNTY-  MD/QUEEN ANNES
 HV6206  COUNTRY     -  US
 HV6206  USGS QUAD   -  KENT ISLAND (2016)
 HV6206
 HV6206                         *CURRENT SURVEY CONTROL
 HV6206  ______________________________________________________________________
 HV6206* NAD 83(1991) POSITION- 38 56 10.40275(N) 076 21 47.63974(W)   ADJUSTED
 HV6206* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6206  ______________________________________________________________________
 HV6206  GEOID HEIGHT    -        -33.614 (meters)                     GEOID18
 HV6206  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 HV6206  HORZ ORDER      -  THIRD
 HV6206
 HV6206.The horizontal coordinates were established by classical geodetic methods
 HV6206.and adjusted by the National Geodetic Survey in January 1992.
 HV6206
 HV6206.The orthometric height was scaled from a topographic map.
 HV6206
 HV6206.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6206.GEOID18 height accuracy estimate available here.
 HV6206
 HV6206.Click photographs - Photos may exist for this station.
 HV6206
 HV6206.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6206
 HV6206. The following values were computed from the NAD 83(1991) position.
 HV6206
 HV6206;                    North         East     Units Scale Factor Converg.
 HV6206;SPC MD       -   141,118.901   455,207.112   MT  0.99995040   +0 23 58.8
 HV6206;SPC MD       -   462,987.59  1,493,458.67   sFT  0.99995040   +0 23 58.8
 HV6206;UTM  18      - 4,310,582.669   381,846.974   MT  0.99977190   -0 51 24.6
 HV6206
 HV6206!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6206!SPC MD       -   1.00000515  x   0.99995040  =   0.99995555
 HV6206!UTM  18      -   1.00000515  x   0.99977190  =   0.99977705
 HV6206
 HV6206:                Primary Azimuth Mark                     Grid Az
 HV6206:SPC MD       -  BLOODY POINT BAR LH                      191 50 27.2
 HV6206:UTM  18      -  BLOODY POINT BAR LH                      193 05 50.6
 HV6206
 HV6206_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8184610582(NAD 83)
 HV6206
 HV6206|---------------------------------------------------------------------|
 HV6206| PID    Reference Object                     Distance      Geod. Az  |
 HV6206|                                                           dddmmss.s |
 HV6206| CX2659 CRANEY RM                             4.880 METERS 08536     |
 HV6206| HV6299 BLOODY POINT BAR LH                 APPROX.11.7 KM 1921426.0 |
 HV6206|---------------------------------------------------------------------|
 HV6206
 HV6206                          SUPERSEDED SURVEY CONTROL
 HV6206
 HV6206  NAD 83(1986)-  38 56 10.39855(N)    076 21 47.65199(W) AD(       ) 3
 HV6206  NAD 27      -  38 56 09.97900(N)    076 21 48.80900(W) AD(       ) 3
 HV6206  USSD        -  38 56 10.35000(N)    076 21 48.65700(W) AD(       ) 3
 HV6206
 HV6206.Superseded values are not recommended for survey control.
 HV6206
 HV6206.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6206.See file dsdata.pdf to determine how the superseded data were derived.
 HV6206
 HV6206_MARKER: N = NAIL
 HV6206_SETTING: 0 = UNSPECIFIED SETTING
 HV6206
 HV6206  HISTORY     - Date     Condition        Report By
 HV6206  HISTORY     - 1906     MONUMENTED       MDSFC
 HV6206  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6206
 HV6206                          STATION DESCRIPTION
 HV6206
 HV6206'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV6206'ON THE EASTERN SHORE OF CHESAPEAKE BAY, ON THE W SIDE OF KENT
 HV6206'ISLAND, ABOUT 1/2 MILE N OF CRANEY CREEK, IN A LOW, SANDY,
 HV6206'CULTIVATED FIELD, ABOUT 3 FEET ABOVE AND 30 FEET BACK OF HIGH-WATER
 HV6206'MARK.  STATION MARKED BY A NAIL IN A WOODEN STUB PROJECTING 3
 HV6206'INCHES ABOVE THE GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE
 HV6206'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6206'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH
 HV6206'THE TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6206'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 4.88
 HV6206'METERS (16.01 FEET) FROM STATION N 85 DEG 36 MIN E.  THE
 HV6206'CUPOLA ON A BARN IS DISTANT ABOUT 1/4 MILE S 45 DEG 04 MIN E.
 HV6206
 HV6206                          STATION RECOVERY (1932)
 HV6206
 HV6206'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6206'STATION AND REFERENCE MONUMENT ARE LOST.  THE SHORELINE HAS
 HV6206'ERODED FROM THE LOCATION OF BOTH MARKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6295 ***********************************************************************
 JV6295  DESIGNATION -  CREAMERY
 JV6295  PID         -  JV6295
 JV6295  STATE/COUNTY-  MD/HARFORD
 JV6295  COUNTRY     -  US
 JV6295  USGS QUAD   -  PHOENIX (2016)
 JV6295
 JV6295                         *CURRENT SURVEY CONTROL
 JV6295  ______________________________________________________________________
 JV6295* NAD 83(2011) POSITION- 39 37 27.36005(N) 076 31 09.84539(W)   ADJUSTED
 JV6295* NAD 83(2011) ELLIP HT-   174.490 (meters)        (06/27/12)   ADJUSTED
 JV6295* NAD 83(2011) EPOCH   -  2010.00
 JV6295* NAVD 88 ORTHO HEIGHT -   206.959 (meters)      679.00  (feet) ADJUSTED
 JV6295  ______________________________________________________________________
 JV6295  GEOID HEIGHT    -        -32.460 (meters)                     GEOID18
 JV6295  NAD 83(2011) X  -  1,146,826.913 (meters)                     COMP
 JV6295  NAD 83(2011) Y  - -4,784,013.847 (meters)                     COMP
 JV6295  NAD 83(2011) Z  -  4,046,051.272 (meters)                     COMP
 JV6295  LAPLACE CORR    -         -2.80  (seconds)                    DEFLEC18
 JV6295  DYNAMIC HEIGHT  -        206.853 (meters)      678.65  (feet) COMP
 JV6295  MODELED GRAVITY -    980,112.5   (mgal)                       NAVD 88
 JV6295
 JV6295  VERT ORDER      -  FIRST     CLASS II
 JV6295
 JV6295  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6295  Standards:
 JV6295         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6295            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6295  -------------------------------------------------------------------
 JV6295  NETWORK    0.83   1.33           0.37   0.30   0.68     -0.04168696
 JV6295  -------------------------------------------------------------------
 JV6295  Click here for local accuracies and other accuracy information.
 JV6295
 JV6295.The horizontal coordinates were established by GPS observations
 JV6295.and adjusted by the National Geodetic Survey in June 2012.
 JV6295
 JV6295.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6295.been affixed to the stable North American tectonic plate. See 
 JV6295.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6295
 JV6295.The horizontal coordinates are valid at the epoch date displayed above
 JV6295.which is a decimal equivalence of Year/Month/Day.
 JV6295
 JV6295.The orthometric height was determined by differential leveling and
 JV6295.adjusted by the NATIONAL GEODETIC SURVEY
 JV6295.in June 1991.
 JV6295
 JV6295.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6295.GEOID18 height accuracy estimate available here.
 JV6295
 JV6295.Click photographs - Photos may exist for this station.
 JV6295
 JV6295.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6295
 JV6295.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6295
 JV6295.The ellipsoidal height was determined by GPS observations
 JV6295.and is referenced to NAD 83.
 JV6295
 JV6295.The dynamic height is computed by dividing the NAVD 88
 JV6295.geopotential number by the normal gravity value computed on the
 JV6295.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6295.degrees latitude (g = 980.6199 gals.).
 JV6295
 JV6295.The modeled gravity was interpolated from observed gravity values.
 JV6295
 JV6295. The following values were computed from the NAD 83(2011) position.
 JV6295
 JV6295;                    North         East     Units Scale Factor Converg.
 JV6295;SPC MD       -   217,420.695   441,265.470   MT  1.00003513   +0 18 05.9
 JV6295;SPC MD       -   713,321.06  1,447,718.46   sFT  1.00003513   +0 18 05.9
 JV6295;UTM  18      - 4,387,158.725   369,593.408   MT  0.99980937   -0 58 08.9
 JV6295
 JV6295!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6295!SPC MD       -   0.99997263  x   1.00003513  =   1.00000775
 JV6295!UTM  18      -   0.99997263  x   0.99980937  =   0.99978200
 JV6295
 JV6295_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6959387158(NAD 83)
 JV6295
 JV6295|---------------------------------------------------------------------|
 JV6295| PID    Reference Object                     Distance      Geod. Az  |
 JV6295|                                                           dddmmss.s |
 JV6295| JV6329 CREAMERY AZ MK                      298.094 METERS 15523     |
 JV6295|---------------------------------------------------------------------|
 JV6295
 JV6295                          SUPERSEDED SURVEY CONTROL
 JV6295
 JV6295  NAD 83(2007)-  39 37 27.36017(N)    076 31 09.84593(W) AD(2002.00) 0
 JV6295  ELLIP H (02/10/07)  174.512  (m)                       GP(2002.00)    
 JV6295  ELLIP H (08/30/02)  174.520  (m)                       GP(       ) 4 2
 JV6295  ELLIP H (03/31/00)  174.446  (m)                       GP(       ) 3 1
 JV6295  NAD 83(1991)-  39 37 27.36029(N)    076 31 09.84443(W) AD(       ) 1
 JV6295  ELLIP H (01/27/92)  174.534  (m)                       GP(       ) 4 1
 JV6295  NAD 83(1986)-  39 37 27.35316(N)    076 31 09.85043(W) AD(       ) 1
 JV6295  NAVD 88             206.96   (m)          679.0    (f) LEVELING    3  
 JV6295  NGVD 29             207.20   (m)          679.8    (f) LEVELING    3  
 JV6295
 JV6295.Superseded values are not recommended for survey control.
 JV6295
 JV6295.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6295.See file dsdata.pdf to determine how the superseded data were derived.
 JV6295
 JV6295_STAMPING: 75 CREAMERY 1989
 JV6295_MARK LOGO: MD-025
 JV6295_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6295+SATELLITE: SATELLITE OBSERVATIONS - July 23, 2009
 JV6295
 JV6295  HISTORY     - Date     Condition        Report By
 JV6295  HISTORY     - 1989     MONUMENTED       RDA
 JV6295  HISTORY     - 19970615 GOOD             MD-005
 JV6295  HISTORY     - 20090723 GOOD             JARICE
 JV6295  HISTORY     - 20200827 MARK NOT FOUND   MD-005
 JV6295
 JV6295                          STATION DESCRIPTION
 JV6295
 JV6295'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6295'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6295'1 MILE NORTH OF THE VILLAGE OF MADONNA.  TO REACH THE STATION FROM
 JV6295'THE INTERSECTION OF STATE HIGHWAY 146 AND STATE HIGHWAY 23 PROCEED
 JV6295'NORTH ALONG HIGHWAY 146 0.43 MILES TO ITS INTERSECTION WITH HARFORD
 JV6295'CREAMERY ROAD.  TURN LEFT AND PROCEED WEST ALONG HARFORD CREAMERY
 JV6295'ROAD 0.41 MILES TO THE STATION ON THE LEFT.  THE STATION IS A
 JV6295'STANDARD HARFORD COUNTY STATION DISC SET IN CONCRETE ABOUT 1 INCH
 JV6295'BELOW GROUND STAMPED 75 CREAMERY 1989.  THE STATION IS 15.5 FEET
 JV6295'SOUTHWEST OF THE CENTERLINE OF HARFORD CREAMERY ROAD, 65.6 FEET
 JV6295'SOUTHWEST OF C AND P OF MARYLAND TELEPHONE POLE WITH NO NUMBER, 76.4
 JV6295'FEET NORTWEST OF G AND E POWER POLE NUMBER 94734.
 JV6295
 JV6295                          STATION RECOVERY (1997)
 JV6295
 JV6295'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV6295'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) RECOVERED
 JV6295'AS DESCRIBED.
 JV6295
 JV6295                          STATION RECOVERY (2009)
 JV6295
 JV6295'RECOVERY NOTE BY J A RICE INC 2009 (JWB)
 JV6295'RECOVERED IN GOOD CONDITION.
 JV6295
 JV6295                          STATION RECOVERY (2020)
 JV6295
 JV6295'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (TSS)
 JV6295'DISK IS MISSING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6329 ***********************************************************************
 JV6329  DESIGNATION -  CREAMERY AZ MK
 JV6329  PID         -  JV6329
 JV6329  STATE/COUNTY-  MD/HARFORD
 JV6329  COUNTRY     -  US
 JV6329  USGS QUAD   -  PHOENIX (2016)
 JV6329
 JV6329                         *CURRENT SURVEY CONTROL
 JV6329  ______________________________________________________________________
 JV6329* NAD 83(2011) POSITION- 39 37 18.57343(N) 076 31 04.63796(W)   ADJUSTED
 JV6329* NAD 83(2011) ELLIP HT-   175.231 (meters)        (06/27/12)   ADJUSTED
 JV6329* NAD 83(2011) EPOCH   -  2010.00
 JV6329* NAVD 88 ORTHO HEIGHT -   207.704 (meters)      681.44  (feet) ADJUSTED
 JV6329  ______________________________________________________________________
 JV6329  GEOID HEIGHT    -        -32.462 (meters)                     GEOID18
 JV6329  NAD 83(2011) X  -  1,146,988.117 (meters)                     COMP
 JV6329  NAD 83(2011) Y  - -4,784,153.508 (meters)                     COMP
 JV6329  NAD 83(2011) Z  -  4,045,843.009 (meters)                     COMP
 JV6329  LAPLACE CORR    -         -2.79  (seconds)                    DEFLEC18
 JV6329  DYNAMIC HEIGHT  -        207.598 (meters)      681.09  (feet) COMP
 JV6329  MODELED GRAVITY -    980,112.3   (mgal)                       NAVD 88
 JV6329
 JV6329  VERT ORDER      -  FIRST     CLASS II
 JV6329
 JV6329  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6329  Standards:
 JV6329         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6329            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6329  -------------------------------------------------------------------
 JV6329  NETWORK    1.12   3.06           0.46   0.44   1.56      0.36191298
 JV6329  -------------------------------------------------------------------
 JV6329  Click here for local accuracies and other accuracy information.
 JV6329
 JV6329.The horizontal coordinates were established by GPS observations
 JV6329.and adjusted by the National Geodetic Survey in June 2012.
 JV6329
 JV6329.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6329.been affixed to the stable North American tectonic plate. See 
 JV6329.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6329
 JV6329.The horizontal coordinates are valid at the epoch date displayed above
 JV6329.which is a decimal equivalence of Year/Month/Day.
 JV6329
 JV6329.The orthometric height was determined by differential leveling and
 JV6329.adjusted by the NATIONAL GEODETIC SURVEY
 JV6329.in June 1991.
 JV6329
 JV6329.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6329.GEOID18 height accuracy estimate available here.
 JV6329
 JV6329.Click photographs - Photos may exist for this station.
 JV6329
 JV6329.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6329
 JV6329.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6329
 JV6329.The ellipsoidal height was determined by GPS observations
 JV6329.and is referenced to NAD 83.
 JV6329
 JV6329.The dynamic height is computed by dividing the NAVD 88
 JV6329.geopotential number by the normal gravity value computed on the
 JV6329.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6329.degrees latitude (g = 980.6199 gals.).
 JV6329
 JV6329.The modeled gravity was interpolated from observed gravity values.
 JV6329
 JV6329. The following values were computed from the NAD 83(2011) position.
 JV6329
 JV6329;                    North         East     Units Scale Factor Converg.
 JV6329;SPC MD       -   217,150.357   441,391.101   MT  1.00003458   +0 18 09.2
 JV6329;SPC MD       -   712,434.13  1,448,130.64   sFT  1.00003458   +0 18 09.2
 JV6329;UTM  18      - 4,386,885.728   369,712.986   MT  0.99980899   -0 58 05.4
 JV6329
 JV6329!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6329!SPC MD       -   0.99997251  x   1.00003458  =   1.00000709
 JV6329!UTM  18      -   0.99997251  x   0.99980899  =   0.99978150
 JV6329
 JV6329_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6971286885(NAD 83)
 JV6329
 JV6329|---------------------------------------------------------------------|
 JV6329| PID    Reference Object                     Distance      Geod. Az  |
 JV6329|                                                           dddmmss.s |
 JV6329| JV6295 CREAMERY                            298.094 METERS 33523     |
 JV6329|---------------------------------------------------------------------|
 JV6329
 JV6329                          SUPERSEDED SURVEY CONTROL
 JV6329
 JV6329  NAD 83(2007)-  39 37 18.57365(N)    076 31 04.63873(W) AD(2002.00) 0
 JV6329  ELLIP H (02/10/07)  175.248  (m)                       GP(2002.00)    
 JV6329  ELLIP H (09/18/02)  175.260  (m)                       GP(       ) 4 2
 JV6329  NAD 83(1991)-  39 37 18.57375(N)    076 31 04.63725(W) AD(       ) 1
 JV6329  ELLIP H (01/27/92)  175.274  (m)                       GP(       ) 4 1
 JV6329  NAD 83(1986)-  39 37 18.56662(N)    076 31 04.64326(W) AD(       ) 1
 JV6329  NGVD 29             207.95   (m)          682.2    (f) LEVELING    3  
 JV6329
 JV6329.Superseded values are not recommended for survey control.
 JV6329
 JV6329.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6329.See file dsdata.pdf to determine how the superseded data were derived.
 JV6329
 JV6329_MARKER: DZ = AZIMUTH MARK DISK
 JV6329_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6329_STAMPING: 75 CREAMERY 1989
 JV6329_MARK LOGO: MD-025
 JV6329_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6329_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6329+STABILITY: SURFACE MOTION
 JV6329_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6329+SATELLITE: SATELLITE OBSERVATIONS - July 23, 2009
 JV6329
 JV6329  HISTORY     - Date     Condition        Report By
 JV6329  HISTORY     - 1989     MONUMENTED       RDA
 JV6329  HISTORY     - 20090723 GOOD             JARICE
 JV6329
 JV6329                          STATION DESCRIPTION
 JV6329
 JV6329'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6329'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6329'1 MILE NORTH OF THE VILLAGE OF MADONNA.  TO REACH THE STATION FROM
 JV6329'THE INTERSECTION OF STATE HIGHWAY 146 AND STATE HIGHWAY 23 PROCEED
 JV6329'NORTH ALONG HIGHWAY 146 0.43 MILES TO ITS INTERSECTION WITH HARFORD
 JV6329'CREAMERY ROAD.  TURN LEFT AND PROCEED WEST ALONG HARFORD CREAMERY
 JV6329'ROAD 0.41 MILES TO THE STATION ON THE LEFT.  TO REACH THE AZIMUTH
 JV6329'MARK FROM THE STATION PROCEED EAST ALONG HARFORD CREAMERY ROAD 0.19
 JV6329'MILES TO THE MARK ON THE RIGHT.  THE MARK IS A STANDARD HARFORD
 JV6329'COUNTY AZIMUTH DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED
 JV6329'75 CREAMERY 1989.  THE MARK IS 24.6 FEET SOUTHWEST OF THE CENTERLINE
 JV6329'OF HARFORD CREAMERY ROAD, 74.5 FEET NORTHWEST FROM A 4 INCH
 JV6329'SASSAFRASS TREE, 3.4 FEET NORTHEAST OF A SPLIT RAIL FENCE.
 JV6329
 JV6329                          STATION RECOVERY (2009)
 JV6329
 JV6329'RECOVERY NOTE BY J A RICE INC 2009 (JWB)
 JV6329'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1934 ***********************************************************************
 HU1934  DESIGNATION -  CREEK
 HU1934  PID         -  HU1934
 HU1934  STATE/COUNTY-  MD/WICOMICO
 HU1934  COUNTRY     -  US
 HU1934  USGS QUAD   -  WETIPQUIN (2016)
 HU1934
 HU1934                         *CURRENT SURVEY CONTROL
 HU1934  ______________________________________________________________________
 HU1934* NAD 83(1991) POSITION- 38 15 39.22929(N) 075 49 08.21050(W)   ADJUSTED
 HU1934* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1934  ______________________________________________________________________
 HU1934  GEOID HEIGHT    -        -35.829 (meters)                     GEOID18
 HU1934  LAPLACE CORR    -         -1.49  (seconds)                    DEFLEC18
 HU1934  HORZ ORDER      -  THIRD
 HU1934
 HU1934.The horizontal coordinates were established by classical geodetic methods
 HU1934.and adjusted by the National Geodetic Survey in January 1992.
 HU1934
 HU1934.The orthometric height was scaled from a topographic map.
 HU1934
 HU1934.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1934.GEOID18 height accuracy estimate available here.
 HU1934
 HU1934.Click photographs - Photos may exist for this station.
 HU1934
 HU1934.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1934
 HU1934. The following values were computed from the NAD 83(1991) position.
 HU1934
 HU1934;                    North         East     Units Scale Factor Converg.
 HU1934;SPC MD       -    66,630.989   503,364.017   MT  1.00000703   +0 44 28.6
 HU1934;SPC MD       -   218,605.17  1,651,453.45   sFT  1.00000703   +0 44 28.6
 HU1934;UTM  18      - 4,235,079.817   428,353.512   MT  0.99966322   -0 30 25.7
 HU1934
 HU1934!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1934!SPC MD       -   1.00000566  x   1.00000703  =   1.00001269
 HU1934!UTM  18      -   1.00000566  x   0.99966322  =   0.99966888
 HU1934
 HU1934:                Primary Azimuth Mark                     Grid Az
 HU1934:SPC MD       -  JONES                                    182 16 12.7
 HU1934:UTM  18      -  JONES                                    183 31 07.0
 HU1934
 HU1934_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2835335079(NAD 83)
 HU1934
 HU1934|---------------------------------------------------------------------|
 HU1934| PID    Reference Object                     Distance      Geod. Az  |
 HU1934|                                                           dddmmss.s |
 HU1934| HU1933 JONES                               APPROX. 1.1 KM 1830041.3 |
 HU1934| HU1865 MOUNT VERNON CHURCH SPIRE           APPROX. 2.2 KM 2103855.8 |
 HU1934|---------------------------------------------------------------------|
 HU1934
 HU1934                          SUPERSEDED SURVEY CONTROL
 HU1934
 HU1934  NAD 83(1986)-  38 15 39.22732(N)    075 49 08.23308(W) AD(       ) 3
 HU1934  NAD 27      -  38 15 38.78600(N)    075 49 09.48800(W) AD(       ) 3
 HU1934  USSD        -  38 15 39.16800(N)    075 49 09.18400(W) AD(       ) 3
 HU1934
 HU1934.Superseded values are not recommended for survey control.
 HU1934
 HU1934.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1934.See file dsdata.pdf to determine how the superseded data were derived.
 HU1934
 HU1934_MARKER: H = DRILL HOLE
 HU1934_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1934_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1934+STABILITY: SURFACE MOTION
 HU1934
 HU1934  HISTORY     - Date     Condition        Report By
 HU1934  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1934  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1934
 HU1934                          STATION DESCRIPTION
 HU1934
 HU1934'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1934'STATION IS ON THE N SHORE OF WICOMICO RIVER, ABOUT 3/4 MILE NW
 HU1934'OF MOUNT VERNON WHARF AND ABOUT 1-3/8 MILES NE OF MOUNT VERNON
 HU1934'CHURCH, ON A MARSH GRASS AND SAND POINT MAKING OUT TO THE S, AND
 HU1934'ABOUT 10 YARDS FROM HIGH-WATER MARK ON EACH OF THE THREE SIDES OF
 HU1934'THE POINT.  ABOUT 10 YARDS W OF THE STATION IS THE MOUTH OF A
 HU1934'CREEK OR DRAIN 10 FEET WIDE WHICH RUNS ONLY A SHORT DISTANCE
 HU1934'INLAND.  THERE ARE SEVERAL UNPAINTED HOUSES WITHIN 200 YARDS OF
 HU1934'OBSERVED STATION, AND A LONE PEAR TREE STANDS ABOUT 200 YARDS
 HU1934'TO THE N.  THERE IS A CULTIVATED FIELD ABOUT 150 YARDS BACK OF
 HU1934'THE STATION EXTENDING TO THE EDGE OF THE WOODS 1/4 MILE
 HU1934'DISTANT.  STATION MARK IS MARKED BY A HOLE IN THE CENTER
 HU1934'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT,
 HU1934'AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HU1934'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HU1934'COUNTER-SUNK IN TOP OF POST.  DISTANCES AND BEARINGS TO VARIOUS
 HU1934'POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY ON SLATE-COLORED
 HU1934'HOUSE, 3/4 MILE, S 23 DEG 36 MIN W.  CHIMNEY ON LIGHT-BLUE HOUSE
 HU1934'WITH RED BLINDS, 1-1/4 MILES, S 44 DEG 25 MIN W.  LONE TREE, 1 MILE,
 HU1934'N 76 DEG 22 MIN W.  CHIMNEY ON OLD UNPAINTED HOUSE, 300 YARDS,
 HU1934'N 41 DEG 03 MIN W.  CHIMNEY ON LIGHT-GREEN TRIMMED HOUSE, 200
 HU1934'YARDS, N 11 DEG 06 MIN W.  PEAR TREE, 200 YARDS, N 10 DEG 27 MIN E.
 HU1934'LEFT CHIMNEY OF CREAM-COLORED HOUSE, 300 YARDS, N 68 DEG 45 MIN E.
 HU1934'TANGENT OF COVE, 30 YARDS, N 35 DEG E.  SMOKE PIPE ON MOUNT
 HU1934'VERNON WHARF, 3/4 MILE, S 46 DEG 47 MIN E.  CHIMNEY ON OUTSIDE
 HU1934'OF YELLOW HOUSE, 5/8 MILE, S 17 DEG 17 MIN E.
 HU1934
 HU1934                          STATION RECOVERY (1942)
 HU1934
 HU1934'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1934'THE INHABITANTS IN THE LOCALITY OF THIS STATION STATE THAT THIS
 HU1934'MARK HAS BEEN COVERED BY 8 OR 10 FEET OF DREDGE DIRT.  ARCS WERE
 HU1934'DRAWN AND DIGGING WAS DONE BY PARTY OF TWO MEN.  IT IS RECOMMENDED
 HU1934'THAT THIS STATION BE RECORDED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6731 ***********************************************************************
 HV6731  DESIGNATION -  CREEK
 HV6731  PID         -  HV6731
 HV6731  STATE/COUNTY-  MD/CALVERT
 HV6731  COUNTRY     -  US
 HV6731  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6731
 HV6731                         *CURRENT SURVEY CONTROL
 HV6731  ______________________________________________________________________
 HV6731* NAD 83(1991) POSITION- 38 21 54.37844(N) 076 29 06.38756(W)   ADJUSTED
 HV6731* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6731  ______________________________________________________________________
 HV6731  GEOID HEIGHT    -        -34.273 (meters)                     GEOID18
 HV6731  LAPLACE CORR    -         -4.37  (seconds)                    DEFLEC18
 HV6731  HORZ ORDER      -  THIRD
 HV6731
 HV6731.The horizontal coordinates were established by classical geodetic methods
 HV6731.and adjusted by the National Geodetic Survey in January 1992.
 HV6731
 HV6731.The orthometric height was scaled from a topographic map.
 HV6731
 HV6731.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6731.GEOID18 height accuracy estimate available here.
 HV6731
 HV6731.Click photographs - Photos may exist for this station.
 HV6731
 HV6731.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6731
 HV6731. The following values were computed from the NAD 83(1991) position.
 HV6731
 HV6731;                    North         East     Units Scale Factor Converg.
 HV6731;SPC MD       -    77,656.567   444,998.408   MT  0.99998931   +0 19 23.4
 HV6731;SPC MD       -   254,778.25  1,459,965.61   sFT  0.99998931   +0 19 23.4
 HV6731;UTM  18      - 4,247,369.222   370,257.241   MT  0.99980731   -0 55 18.8
 HV6731
 HV6731!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6731!SPC MD       -   1.00000495  x   0.99998931  =   0.99999426
 HV6731!UTM  18      -   1.00000495  x   0.99980731  =   0.99981226
 HV6731
 HV6731:                Primary Azimuth Mark                     Grid Az
 HV6731:SPC MD       -  MDTF 60                                  146 16 58.1
 HV6731:UTM  18      -  MDTF 60                                  147 31 40.3
 HV6731
 HV6731_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7025747369(NAD 83)
 HV6731
 HV6731|---------------------------------------------------------------------|
 HV6731| PID    Reference Object                     Distance      Geod. Az  |
 HV6731|                                                           dddmmss.s |
 HV6731| HV6742 STUMP MSFC 1908 RM 1                  5.524 METERS 00508     |
 HV6731| CX2661 CREEK RM 2                           12.988 METERS 00510     |
 HV6731| HV6738 CREEK 2                              23.381 METERS 05948     |
 HV6731| CX2660 CREEK RM 1                           10.863 METERS 11518     |
 HV6731| HV6737 MDTF 60                             APPROX. 0.7 KM 1463621.5 |
 HV6731| HV6667 USN AIR STA TALL ELEV TK            APPROX.10.9 KM 1634311.0 |
 HV6731| HV6767 BROOME ISLAND LIGHTHOUSE            APPROX. 7.2 KM 3012215.5 |
 HV6731| HV6786 PETERSONS POINT LIGHTHOUSE          APPROX. 2.8 KM 3174138.0 |
 HV6731| HV6783 PETERSONS POINT LIGHT               APPROX. 2.8 KM 3174141.0 |
 HV6731|---------------------------------------------------------------------|
 HV6731
 HV6731                          SUPERSEDED SURVEY CONTROL
 HV6731
 HV6731  NAD 83(1986)-  38 21 54.37813(N)    076 29 06.40169(W) AD(       ) 3
 HV6731  NAD 27      -  38 21 53.92900(N)    076 29 07.55900(W) AD(       ) 3
 HV6731
 HV6731.Superseded values are not recommended for survey control.
 HV6731
 HV6731.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6731.See file dsdata.pdf to determine how the superseded data were derived.
 HV6731
 HV6731_MARKER: DS = TRIANGULATION STATION DISK
 HV6731_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6731_STAMPING: CREEK 1943
 HV6731_MARK LOGO: CGS
 HV6731_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6731+STABILITY: SURFACE MOTION
 HV6731
 HV6731  HISTORY     - Date     Condition        Report By
 HV6731  HISTORY     - 1943     MONUMENTED       CGS
 HV6731  HISTORY     - 1960     GOOD             CGS
 HV6731  HISTORY     - 1973     GOOD             MDDNR
 HV6731  HISTORY     - 1974     SEE DESCRIPTION  NGS
 HV6731  HISTORY     - 1989     MARK NOT FOUND   USPSQD
 HV6731
 HV6731                          STATION DESCRIPTION
 HV6731
 HV6731'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (BHR)
 HV6731'STATION IS ON THE NE SHORE OF THE PATUXENT RIVER, ABOUT 1/2 MILE
 HV6731'NW OF HELLEN CREEK, ON LAND OWNED BY DAN BARRET, ON THE TOP OF A
 HV6731'BLUFF FORMING A ROUNDED POINT ON THE RIVER BANK, AND SURROUNDED
 HV6731'BY A SMALL GROUP OF HARDWOOD TREES.  IT IS 5 METERS FROM THE
 HV6731'EDGE OF THE BLUFF, 90 METERS SE OF A 20-INCH OAK TREE, AND 87
 HV6731'METERS SE OF A FENCELINE AT THE FACE AND TOP OF THE BLUFF.
 HV6731'STATION IS 2 INCHES ABOVE THE GROUND.  A 12-FOOT WHITE, WOODEN
 HV6731'SLATTED TRIPOD HAS BEEN ERECTED OVER THE MARK.
 HV6731'
 HV6731'STATION AND REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE AT
 HV6731'THE CENTERS OF THE TOPS OF TILES WHICH ARE SET IN BLOCKS OF
 HV6731'CONCRETE.
 HV6731'
 HV6731'REFERENCE MARK 1 IS 39 FEET NE OF THE STATION AND PROJECTS 2
 HV6731'INCHES ABOVE THE GROUND.
 HV6731'
 HV6731'REFERENCE MARK 2 IS 42 FEET NE OF THE STATION AND PROJECTS 2
 HV6731'INCHES ABOVE THE GROUND.
 HV6731'
 HV6731'REFERENCE MARK 1 OF TRIANGULATION STATION STUMP IS 18 FEET NE
 HV6731'OF THE STATION.  THE MARK IS AN 8- BY 8-INCH CONCRETE BLOCK WITH
 HV6731'COUNTERSUNK LETTERS USCS AND MSFS.  STATION IS FLUSH WITH THE
 HV6731'GROUND.
 HV6731
 HV6731                          STATION RECOVERY (1960)
 HV6731
 HV6731'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6731'STATION MARK AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.  THE
 HV6731'DISTANCES TO THE REFERENCE MARKS AND TO STUMP R.M. NO.1 WERE
 HV6731'VERIFIED.
 HV6731'
 HV6731'THE PUBLISHED DESCRIPTION IS ADEQUATE WITH THE FOLLOWING
 HV6731'ADDITIONS--STATION IS NOW 4 FEET EAST OF THE EDGE OF BLUFF, A
 HV6731'STANDARD TRIANGULATION STATION DISK STAMPED CREEK 1943, SET IN
 HV6731'THE TOP OF A 12 INCH SQUARE CONCRETE MONUMENT PROJECTING 4 INCHES.
 HV6731'
 HV6731'REFERENCE MARK NO.1 IS A STANDARD REFERENCE MARK DISK STAMPED 1
 HV6731'1943 SET IN THE TOP OF A 12 INCH SQUARE CONCRETE MONUMENT
 HV6731'PROJECTING 2 INCHES.
 HV6731'
 HV6731'REFERENCE MARK NO.2 IS A STANDARD REFERENCE MARK DISK STAMPED
 HV6731'NO.2 1943 SET IN THE TOP OF A 12 INCH SQUARE CONCRETE MONUMENT
 HV6731'PROJECTING 2 INCHES.
 HV6731
 HV6731                          STATION RECOVERY (1973)
 HV6731
 HV6731'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV6731'CREEK 43 GOOD
 HV6731'
 HV6731'1 1943 GOOD
 HV6731'
 HV6731'NO2 1943 GOOD
 HV6731'
 HV6731'STUMP RM1 GOOD
 HV6731'
 HV6731'STATION AND RMS RECOVERED AS DESCRIBED EXCEPT STATION IS NOW 1-1/2
 HV6731'FT FROM EDGE OF BANK AND WOOD SLATTED TRIPOD IS GONE.  IF
 HV6731'BANK CONTINUES TO ERODE STA. WILL BE DESTROYED IN ABOUT A
 HV6731'YEAR.  WITNESS POST AND SIGN PLACED 1-1/2 FT E OF STATION.
 HV6731
 HV6731                          STATION RECOVERY (1974)
 HV6731
 HV6731'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV6731'THE STATION MARK WAS FOUND OUT OF POSITION AND LESS THAN 1 FOOT
 HV6731'FROM A 30 FEET BANK WHICH IS WASHING AWAY BY THE PATUXENT
 HV6731'RIVER.  REFERENCE MARKS 1 AND 2 WERE RECOVERED AND FOUND IN GOOD
 HV6731'CONDITION AS DESCRIBED.  STUMP (MSFC) RM 1 1907 WAS ALSO RECOVERED
 HV6731'AND FOUND IN GOOD CONDITION.  THE ANGLES AND DISTANCES TO ALL
 HV6731'OBJECTS WERE CHECKED AND THE TRUE POSITION OF THE STATION
 HV6731'DETERMINED.  THE STATION MONUMENT WAS FOUND TO BE 3 INCHES FROM
 HV6731'WHERE IT WAS ORIGINALLY ESTABLISHED.  FROM THE DETERMINED
 HV6731'POINT ALL OBSERVATIONS WERE CHECKED AND ALL DISTANCES AND
 HV6731'DIRECTIONS WERE WITHIN TOLERANCE TO RE-ESTABLISH THE POINT.
 HV6731'AFTER THE POINT WAS ESTABLISHED A NEW TRIANGULATION
 HV6731'STATION CREEK 2 WAS ESTABLISHED.  SEE DESCRIPTION THEREOF.
 HV6731'
 HV6731'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV6731'ON THE EAST SHORE OF THE PATUXENT RIVER.
 HV6731
 HV6731                          STATION RECOVERY (1989)
 HV6731
 HV6731'RECOVERY NOTE BY US POWER SQUADRON 1989 (WSB)
 HV6731'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7193 ***********************************************************************
 HV7193  DESIGNATION -  CREEK
 HV7193  PID         -  HV7193
 HV7193  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7193  COUNTRY     -  US
 HV7193  USGS QUAD   -  DEALE (2016)
 HV7193
 HV7193                         *CURRENT SURVEY CONTROL
 HV7193  ______________________________________________________________________
 HV7193* NAD 83(1991) POSITION- 38 46 29.86270(N) 076 32 30.80613(W)   ADJUSTED
 HV7193* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7193  ______________________________________________________________________
 HV7193  GEOID HEIGHT    -        -33.540 (meters)                     GEOID18
 HV7193  LAPLACE CORR    -         -3.79  (seconds)                    DEFLEC18
 HV7193  HORZ ORDER      -  THIRD
 HV7193
 HV7193.The horizontal coordinates were established by classical geodetic methods
 HV7193.and adjusted by the National Geodetic Survey in January 1992.
 HV7193
 HV7193.The orthometric height was scaled from a topographic map.
 HV7193
 HV7193.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7193.GEOID18 height accuracy estimate available here.
 HV7193
 HV7193.Click photographs - Photos may exist for this station.
 HV7193
 HV7193.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7193
 HV7193. The following values were computed from the NAD 83(1991) position.
 HV7193
 HV7193;                    North         East     Units Scale Factor Converg.
 HV7193;SPC MD       -   123,125.093   439,807.667   MT  0.99995139   +0 17 15.1
 HV7193;SPC MD       -   403,952.91  1,442,935.65   sFT  0.99995139   +0 17 15.1
 HV7193;UTM  18      - 4,292,933.170   366,059.571   MT  0.99982092   -0 57 56.8
 HV7193
 HV7193!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7193!SPC MD       -   1.00000530  x   0.99995139  =   0.99995669
 HV7193!UTM  18      -   1.00000530  x   0.99982092  =   0.99982622
 HV7193
 HV7193:                Primary Azimuth Mark                     Grid Az
 HV7193:SPC MD       -  SPRING                                   095 35 38.7
 HV7193:UTM  18      -  SPRING                                   096 50 50.6
 HV7193
 HV7193_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6605992933(NAD 83)
 HV7193
 HV7193|---------------------------------------------------------------------|
 HV7193| PID    Reference Object                     Distance      Geod. Az  |
 HV7193|                                                           dddmmss.s |
 HV7193| HV6295 SPRING                              APPROX.13.7 KM 0955253.8 |
 HV7193|---------------------------------------------------------------------|
 HV7193
 HV7193                          SUPERSEDED SURVEY CONTROL
 HV7193
 HV7193  NAD 83(1986)-  38 46 29.86028(N)    076 32 30.81865(W) AD(       ) 3
 HV7193  NAD 27      -  38 46 29.44300(N)    076 32 31.97400(W) AD(       ) 3
 HV7193
 HV7193.Superseded values are not recommended for survey control.
 HV7193
 HV7193.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7193.See file dsdata.pdf to determine how the superseded data were derived.
 HV7193
 HV7193_MARKER: DS = TRIANGULATION STATION DISK
 HV7193_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7193_MARK LOGO: CGS
 HV7193_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7193
 HV7193  HISTORY     - Date     Condition        Report By
 HV7193  HISTORY     - 1933     MONUMENTED       CGS
 HV7193
 HV7193                          STATION DESCRIPTION
 HV7193
 HV7193'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (ERM)
 HV7193'STATION IS LOCATED ON THE W SIDE OF THE ENTRANCE TO PARKERS CREEK
 HV7193'FROM HERRING BAY, ON THE POINT AND 40 METERS FROM THE BAY SHORE.
 HV7193'THE POINT IS KNOWN LOCALLY AS LONG MARSH.  STATION IS 300 METERS
 HV7193'130 DEG. MAGNETIC FROM THE W.E. BROOKS SUMMER COTTAGE.
 HV7193'
 HV7193'STATION MARK IS A STANDARD BRONZE DISK IN A TILE, AS DESCRIBED
 HV7193'
 HV7193'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE AS
 HV7193'DESCRIBED.
 HV7193'
 HV7193'STATION AND REFERENCE MARKS ARE CAST AROUND 2 BY 4 CYPRESS STAKES.
 HV7193'
 HV7193'REFERENCE MARK NO.1 IS 31.370 METERS DISTANT FROM THE STATION S 28
 HV7193'DEG W
 HV7193'
 HV7193'REFERENCE MARK NO.2 IS 43.259 METERS DISTANT FROM THE STATION S 40
 HV7193'DEG E.
 HV7193'
 HV7193'HEIGHT OF SIGNAL ABOVE STATION MARK - 6 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3880 ***********************************************************************
 JU3880  DESIGNATION -  CREEK
 JU3880  PID         -  JU3880
 JU3880  STATE/COUNTY-  MD/CECIL
 JU3880  COUNTRY     -  US
 JU3880  USGS QUAD   -  ELKTON (2016)
 JU3880
 JU3880                         *CURRENT SURVEY CONTROL
 JU3880  ______________________________________________________________________
 JU3880* NAD 83(1991) POSITION- 39 31 24.17534(N) 075 52 16.47484(W)   ADJUSTED
 JU3880* NAVD 88 ORTHO HEIGHT -     3.06  (+/-2cm)       10.0   (feet) VERTCON3
 JU3880  ______________________________________________________________________
 JU3880  GEOID HEIGHT    -        -33.306 (meters)                     GEOID18
 JU3880  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 JU3880  HORZ ORDER      -  THIRD
 JU3880  VERT ORDER      -  THIRD ? (See Below)
 JU3880
 JU3880.The horizontal coordinates were established by classical geodetic methods
 JU3880.and adjusted by the National Geodetic Survey in January 1992.
 JU3880
 JU3880.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3880.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3880
 JU3880.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3880.GEOID18 height accuracy estimate available here.
 JU3880
 JU3880.The vertical order pertains to the NGVD 29 superseded value.
 JU3880
 JU3880.Click photographs - Photos may exist for this station.
 JU3880
 JU3880.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3880
 JU3880. The following values were computed from the NAD 83(1991) position.
 JU3880
 JU3880;                    North         East     Units Scale Factor Converg.
 JU3880;SPC MD       -   206,710.971   497,054.562   MT  1.00001366   +0 42 30.4
 JU3880;SPC MD       -   678,184.24  1,630,753.18   sFT  1.00001366   +0 42 30.4
 JU3880;UTM  18      - 4,375,221.810   425,115.935   MT  0.99966904   -0 33 16.1
 JU3880
 JU3880!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3880!SPC MD       -   1.00000474  x   1.00001366  =   1.00001840
 JU3880!UTM  18      -   1.00000474  x   0.99966904  =   0.99967378
 JU3880
 JU3880:                Primary Azimuth Mark                     Grid Az
 JU3880:SPC MD       -  COURT 2                                  225 46 50.1
 JU3880:UTM  18      -  COURT 2                                  227 02 36.6
 JU3880
 JU3880_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2511575221(NAD 83)
 JU3880
 JU3880|---------------------------------------------------------------------|
 JU3880| PID    Reference Object                     Distance      Geod. Az  |
 JU3880|                                                           dddmmss.s |
 JU3880| JU3945 TOWN POINT CHANNEL E R RNG LT       APPROX. 1.6 KM 2214044.3 |
 JU3880| JU3944 TOWN POINT CHANNEL E FT RNG LT      APPROX. 1.7 KM 2240316.8 |
 JU3880| JU3925 COURT 2                             APPROX. 1.6 KM 2262920.5 |
 JU3880|---------------------------------------------------------------------|
 JU3880
 JU3880                          SUPERSEDED SURVEY CONTROL
 JU3880
 JU3880  NAD 83(1986)-  39 31 24.16829(N)    075 52 16.48283(W) AD(       ) 3
 JU3880  NAD 27      -  39 31 23.76900(N)    075 52 17.71000(W) AD(       ) 3
 JU3880  NGVD 29               3.30   (m)           10.8    (f) LEVELING    3  
 JU3880
 JU3880.Superseded values are not recommended for survey control.
 JU3880
 JU3880.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3880.See file dsdata.pdf to determine how the superseded data were derived.
 JU3880
 JU3880_MARKER: DD = SURVEY DISK
 JU3880_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3880_STAMPING: CREEK
 JU3880_MARK LOGO: USACE
 JU3880_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3880+STABILITY: SURFACE MOTION
 JU3880
 JU3880  HISTORY     - Date     Condition        Report By
 JU3880  HISTORY     - 1937     MONUMENTED       USACE
 JU3880  HISTORY     - 1938     GOOD             CGS
 JU3880  HISTORY     - 1943     GOOD             CGS
 JU3880  HISTORY     - 1984     MARK NOT FOUND   USPSQD
 JU3880
 JU3880                          STATION DESCRIPTION
 JU3880
 JU3880'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3880'LOCATED ON S SIDE OF THE MOUTH OF BACK CREEK ABOUT 0.5 MILE NE OF
 JU3880'HERRING ISLAND AND ABOUT 150 METERS SW OF A FLASHING WHITE LIGHT
 JU3880'BUILT ON PILING IN THE MOUTH OF THE CREEK.  IT IS 11.3 METERS
 JU3880'INSHORE 3.1 METERS FROM EDGE OF CULTIVATED FIELD, AND 45.3 METERS
 JU3880'WSW FROM A BEND IN A ROAD ACROSS A CULTIVATED FIELD.
 JU3880'
 JU3880'STATION IS MARKED BY A STANDARD U.S.E. DISK STAMPED CREEK
 JU3880'SET IN TOP OF A 6-INCH SQUARE CONCRETE POST AND PROJECTS 5 INCHES
 JU3880'ABOVE GROUND.  THE REFERENCE MARKS ARE U.S.E. DISKS SET ATOP
 JU3880'CONCRETE POSTS.
 JU3880
 JU3880                          STATION RECOVERY (1938)
 JU3880
 JU3880'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3880'STATION RECOVERED IN GOOD CONDITION.  STATION IS LOCATED 3-1/2
 JU3880'MILES W OF CHESAPEAKE CITY ON THE S SIDE OF THE MOUTH OF BACK
 JU3880'CREEK, ABOUT 0.5 MILE NE OF HERRING ISLAND, ABOUT 150 METERS S
 JU3880'OF A BEACON ON PILING AT THE ENTRANCE TO BACK CREEK CHANNEL.
 JU3880'
 JU3880'STATION MARK IS 3 METERS E OF THE EDGE OF A 4-FOOT BLUFF,
 JU3880'11.3 METERS E OF HIGH-WATER LINE AND 3 METERS W OF THE CENTER
 JU3880'LINE OF A LANE RUNNING AONG THE W SIDE OF A CULTIVATED FIELD.
 JU3880'
 JU3880'THE MARK IS A STANDARD U.S.E.D. DISK ATOP A 6-INCH SQUARE
 JU3880'CONCRETE POST AND PROJECTS 5 INCHES ABOVE GROUND.
 JU3880'
 JU3880'TO REACH THE STATION FROM THE CANAL BRIDGE AT CHESAPEAKE
 JU3880'CITY, GO S ON U.S. HIGHWAY 213, 1.1 MILES, TURN RIGHT AND FOLLOW
 JU3880'DIRT ROAD 0.8 MILE TO FORK.  TAKE RIGHT FOR FOR 0.7 MILE TO
 JU3880'HOUSE, FOLLOW LANE TO LEFT BY HOUSE FOR 1.2 MILES TO END.  TURN
 JU3880'RIGHT, FOLLOW LANE BETWEEN SUMMER COTTAGE AND BARN, THROUGH GATE
 JU3880'AND ALONG W SIDE OF CULTIVATED FIELD FOR 0.3 MILE TO THE
 JU3880'STATION.
 JU3880
 JU3880                          STATION RECOVERY (1943)
 JU3880
 JU3880'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 JU3880'RECOVERED AS DESCRIBED.  DESCRIPTION ADEQUATE.
 JU3880
 JU3880                          STATION RECOVERY (1984)
 JU3880
 JU3880'RECOVERY NOTE BY US POWER SQUADRON 1984 (AHJ)
 JU3880'STATION MARK COULD NOT BE FOUND.  GROUND WHERE MARKS WAS LOCATED HAS
 JU3880'ERODED AWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3883 ***********************************************************************
 JU3883  DESIGNATION -  CREEK 1898
 JU3883  PID         -  JU3883
 JU3883  STATE/COUNTY-  MD/CECIL
 JU3883  COUNTRY     -  US
 JU3883  USGS QUAD   -  ELKTON (2016)
 JU3883
 JU3883                         *CURRENT SURVEY CONTROL
 JU3883  ______________________________________________________________________
 JU3883* NAD 83(1991) POSITION- 39 31 24.18500(N) 075 52 16.45121(W)   ADJUSTED
 JU3883* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JU3883  ______________________________________________________________________
 JU3883  GEOID HEIGHT    -        -33.306 (meters)                     GEOID18
 JU3883  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 JU3883  HORZ ORDER      -  THIRD
 JU3883
 JU3883.The horizontal coordinates were established by classical geodetic methods
 JU3883.and adjusted by the National Geodetic Survey in January 1992.
 JU3883
 JU3883.The orthometric height was scaled from a topographic map.
 JU3883
 JU3883.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3883.GEOID18 height accuracy estimate available here.
 JU3883
 JU3883.Click photographs - Photos may exist for this station.
 JU3883
 JU3883.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3883
 JU3883. The following values were computed from the NAD 83(1991) position.
 JU3883
 JU3883;                    North         East     Units Scale Factor Converg.
 JU3883;SPC MD       -   206,711.276   497,055.123   MT  1.00001366   +0 42 30.4
 JU3883;SPC MD       -   678,185.24  1,630,755.02   sFT  1.00001366   +0 42 30.4
 JU3883;UTM  18      - 4,375,222.102   425,116.502   MT  0.99966904   -0 33 16.1
 JU3883
 JU3883!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3883!SPC MD       -   1.00000479  x   1.00001366  =   1.00001845
 JU3883!UTM  18      -   1.00000479  x   0.99966904  =   0.99967383
 JU3883
 JU3883:                Primary Azimuth Mark                     Grid Az
 JU3883:SPC MD       -  ISLAND 1898                              206 26 41.8
 JU3883:UTM  18      -  ISLAND 1898                              207 42 28.3
 JU3883
 JU3883_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2511675222(NAD 83)
 JU3883
 JU3883|---------------------------------------------------------------------|
 JU3883| PID    Reference Object                     Distance      Geod. Az  |
 JU3883|                                                           dddmmss.s |
 JU3883| JU3926 ISLAND 1898                         APPROX. 0.8 KM 2070912.2 |
 JU3883|---------------------------------------------------------------------|
 JU3883
 JU3883                          SUPERSEDED SURVEY CONTROL
 JU3883
 JU3883  NAD 83(1986)-  39 31 24.17645(N)    075 52 16.45663(W) AD(       ) 3
 JU3883  NAD 27      -  39 31 23.78000(N)    075 52 17.67400(W) AD(       ) 3
 JU3883  USSD        -  39 31 24.16100(N)    075 52 17.50200(W) AD(       ) 3
 JU3883
 JU3883.Superseded values are not recommended for survey control.
 JU3883
 JU3883.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3883.See file dsdata.pdf to determine how the superseded data were derived.
 JU3883
 JU3883
 JU3883  HISTORY     - Date     Condition        Report By
 JU3883  HISTORY     - 1898     MONUMENTED       CGS
 JU3883  HISTORY     - 1905     GOOD             CGS
 JU3883  HISTORY     - 1938     MARK NOT FOUND   CGS
 JU3883
 JU3883                          STATION DESCRIPTION
 JU3883
 JU3883'DESCRIBED BY COAST AND GEODETIC SURVEY 1905
 JU3883'INSIDE MOUTH OF AND AT S SIDE OF BACK CREEK, AT EDGE OF CULTIVATED
 JU3883'FIELD.  MARKED BY A BOX 3 BY 3 INCHES AND 3 FEET DEEP FILLED WITH
 JU3883'CEMENT, A NAIL IN TOP MARKING THE CENTER.
 JU3883
 JU3883                          STATION RECOVERY (1938)
 JU3883
 JU3883'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3883'STATION MARK WAS NOT RECOVERED.
 JU3883'
 JU3883'THE U.S. ENGINEERS HAVE ESTABLISHED A NEW MARK IN THE IMMEDIATE
 JU3883'VICINITY, CREEK U.S.E., 1937.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5710 ***********************************************************************
 JV5710  DESIGNATION -  CREEK 1915
 JV5710  PID         -  JV5710
 JV5710  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5710  COUNTRY     -  US
 JV5710  USGS QUAD   -  CURTIS BAY (2016)
 JV5710
 JV5710                         *CURRENT SURVEY CONTROL
 JV5710  ______________________________________________________________________
 JV5710* NAD 83(1991) POSITION- 39 12 26.25561(N) 076 34 43.98946(W)   ADJUSTED
 JV5710* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5710  ______________________________________________________________________
 JV5710  GEOID HEIGHT    -        -32.911 (meters)                     GEOID18
 JV5710  LAPLACE CORR    -         -4.34  (seconds)                    DEFLEC18
 JV5710  HORZ ORDER      -  THIRD
 JV5710
 JV5710.The horizontal coordinates were established by classical geodetic methods
 JV5710.and adjusted by the National Geodetic Survey in January 1992.
 JV5710
 JV5710.The orthometric height was scaled from a topographic map.
 JV5710
 JV5710.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5710.GEOID18 height accuracy estimate available here.
 JV5710
 JV5710.Click photographs - Photos may exist for this station.
 JV5710
 JV5710.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5710
 JV5710. The following values were computed from the NAD 83(1991) position.
 JV5710
 JV5710;                    North         East     Units Scale Factor Converg.
 JV5710;SPC MD       -   171,102.306   436,371.566   MT  0.99996654   +0 15 51.5
 JV5710;SPC MD       -   561,358.15  1,431,662.38   sFT  0.99996654   +0 15 51.5
 JV5710;UTM  18      - 4,340,968.037   363,677.817   MT  0.99982882   -0 59 53.6
 JV5710
 JV5710!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5710!SPC MD       -   1.00000426  x   0.99996654  =   0.99997080
 JV5710!UTM  18      -   1.00000426  x   0.99982882  =   0.99983308
 JV5710
 JV5710:                Primary Azimuth Mark                     Grid Az
 JV5710:SPC MD       -  CURTIS                                   316 16 57.2
 JV5710:UTM  18      -  CURTIS                                   317 32 42.3
 JV5710
 JV5710_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6367740968(NAD 83)
 JV5710
 JV5710|---------------------------------------------------------------------|
 JV5710| PID    Reference Object                     Distance      Geod. Az  |
 JV5710|                                                           dddmmss.s |
 JV5710| JV5704 SMITH USE 1916                      438.632 METERS 2865522.8 |
 JV5710| JV5701 CURTIS                              436.103 METERS 3163248.7 |
 JV5710|---------------------------------------------------------------------|
 JV5710
 JV5710                          SUPERSEDED SURVEY CONTROL
 JV5710
 JV5710  NAD 83(1986)-  39 12 26.25195(N)    076 34 43.99889(W) AD(       ) 3
 JV5710  NAD 27      -  39 12 25.86400(N)    076 34 45.12400(W) AD(       ) 3
 JV5710  USSD        -  39 12 26.22700(N)    076 34 44.96600(W) AD(       ) 3
 JV5710
 JV5710.Superseded values are not recommended for survey control.
 JV5710
 JV5710.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5710.See file dsdata.pdf to determine how the superseded data were derived.
 JV5710
 JV5710
 JV5710  HISTORY     - Date     Condition        Report By
 JV5710  HISTORY     - 1915     MONUMENTED       CGS
 JV5710  HISTORY     - 1924     GOOD             CGS
 JV5710
 JV5710                          STATION DESCRIPTION
 JV5710
 JV5710'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5710'ON THE E SIDE OF CURTIS CREEK, ABOUT 50 FEET N OF BRIDGE, ON THE
 JV5710'S. AGNES WATSON ESTATE, AND BETWEEN DRIVEWAYS LEADING TO
 JV5710'WHARF.  THE WHARF WAS REPORTED IN 1924 AS DESTROYED.  THE STATION
 JV5710'IS MARKED BY A STANDARD BRONZE DISK STATION MARK
 JV5710'SET IN A CONCRETE MONUMENT WITH THE TOP FLUSH WITH
 JV5710'THE GROUND.  REFERENCE MARKS WERE TRIANGLES FORMED OF NAILS
 JV5710'DRIVEN INTO TREES AT THE FOLLOWING DISTANCES FROM THE
 JV5710'STATION--SMALL LOCUST TREE NEAR THE BEACH, 9.20 METERS (30.2 FEET).
 JV5710'LARGE OAK TREE, 8.72 METERS (28.6 FEET).  SMALL LOCUST
 JV5710'TREE, 2.62 METERS (8.6 FEET).  IN 1924 THE OAK WAS
 JV5710'REPORTED TO HAVE BEEN BLOWN DOWN AND THE STATION TO BE 9.3
 JV5710'METERS (30.5 FEET) FROM THE CENTER OF THE TRUNK JUST ABOVE THE
 JV5710'ROOT.  AN ADDITIONAL REFERENCE WAS GIVEN AS FOLLOWS--TWO LARGE
 JV5710'TRANSFORMER POLES CARRYING ELECTRIC CABLES ARE LOCATED
 JV5710'NEAR THE END OF THE BRIDGE.  THE NEARER POLE IS 13.81
 JV5710'METERS (45.3 FEET) FROM THE ABUTMENT OF THE BRIDGE, AND THE
 JV5710'STATION IS 22.31 METERS (73.2 FEET) FROM THIS POLE AT RIGHT
 JV5710'ANGLES TO THE CENTER LINE OF THE BRIDGE.  A STANDARD BRONZE
 JV5710'DISK REFERENCE MARK, ABOUT 10 FEET FROM THE ROADWAY, IS
 JV5710'18.72 METERS (61.4 FEET) FROM THE STATION IN RANGE WITH THE
 JV5710'STACKS OF THE PRUDENTIAL OIL COMPANY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6738 ***********************************************************************
 HV6738  DESIGNATION -  CREEK 2
 HV6738  PID         -  HV6738
 HV6738  STATE/COUNTY-  MD/CALVERT
 HV6738  COUNTRY     -  US
 HV6738  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6738
 HV6738                         *CURRENT SURVEY CONTROL
 HV6738  ______________________________________________________________________
 HV6738* NAD 83(1991) POSITION- 38 21 54.75994(N) 076 29 05.55522(W)   NO CHECK
 HV6738* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6738  ______________________________________________________________________
 HV6738  GEOID HEIGHT    -        -34.273 (meters)                     GEOID18
 HV6738  LAPLACE CORR    -         -4.36  (seconds)                    DEFLEC18
 HV6738  HORZ ORDER      -  THIRD
 HV6738
 HV6738.The horizontal coordinates were established by classical geodetic methods
 HV6738.and adjusted by the National Geodetic Survey in January 1992.
 HV6738
 HV6738.No horizontal observational check was made to the station.
 HV6738
 HV6738.The orthometric height was scaled from a topographic map.
 HV6738
 HV6738.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6738.GEOID18 height accuracy estimate available here.
 HV6738
 HV6738.Click photographs - Photos may exist for this station.
 HV6738
 HV6738.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6738
 HV6738. The following values were computed from the NAD 83(1991) position.
 HV6738
 HV6738;                    North         East     Units Scale Factor Converg.
 HV6738;SPC MD       -    77,668.444   445,018.548   MT  0.99998930   +0 19 23.9
 HV6738;SPC MD       -   254,817.22  1,460,031.69   sFT  0.99998930   +0 19 23.9
 HV6738;UTM  18      - 4,247,380.657   370,277.630   MT  0.99980724   -0 55 18.3
 HV6738
 HV6738!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6738!SPC MD       -   1.00000495  x   0.99998930  =   0.99999425
 HV6738!UTM  18      -   1.00000495  x   0.99980724  =   0.99981219
 HV6738
 HV6738:                Primary Azimuth Mark                     Grid Az
 HV6738:SPC MD       -  MDTF 60                                  148 16 35.3
 HV6738:UTM  18      -  MDTF 60                                  149 31 17.5
 HV6738
 HV6738_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7027747380(NAD 83)
 HV6738
 HV6738|---------------------------------------------------------------------|
 HV6738| PID    Reference Object                     Distance      Geod. Az  |
 HV6738|                                                           dddmmss.s |
 HV6738| HV6737 MDTF 60                             APPROX. 0.7 KM 1483559.2 |
 HV6738| HV6667 USN AIR STA TALL ELEV TK            APPROX.10.9 KM 1635022.5 |
 HV6738| CX2660 CREEK RM 1                           19.420 METERS 21220     |
 HV6738| HV6731 CREEK                                23.381 METERS 23948     |
 HV6738| HV6742 STUMP MSFC 1908 RM 1                 20.683 METERS 25223     |
 HV6738| CX2661 CREEK RM 2                           19.076 METERS 27331     |
 HV6738| HV6767 BROOME ISLAND LIGHTHOUSE            APPROX. 7.2 KM 3011224.8 |
 HV6738| HV6783 PETERSONS POINT LIGHT               APPROX. 2.8 KM 3171324.2 |
 HV6738|---------------------------------------------------------------------|
 HV6738
 HV6738                          SUPERSEDED SURVEY CONTROL
 HV6738
 HV6738  NAD 83(1986)-  38 21 54.75959(N)    076 29 05.56943(W) AD(       ) 3
 HV6738
 HV6738.Superseded values are not recommended for survey control.
 HV6738
 HV6738.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6738.See file dsdata.pdf to determine how the superseded data were derived.
 HV6738
 HV6738_MARKER: DH = HORIZONTAL CONTROL DISK
 HV6738_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6738_STAMPING: CREEK 2 1974
 HV6738_MARK LOGO: NGS
 HV6738_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6738+STABILITY: SURFACE MOTION
 HV6738
 HV6738  HISTORY     - Date     Condition        Report By
 HV6738  HISTORY     - 1974     MONUMENTED       NGS
 HV6738  HISTORY     - 1981     GOOD             MDDNR
 HV6738  HISTORY     - 1988     GOOD             MDDNR
 HV6738
 HV6738                          STATION DESCRIPTION
 HV6738
 HV6738'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV6738'THE STATION IS LOCATED 1/2 MILE NORTHWEST OF HELLENS CREEK, 2
 HV6738'MILES NORTH OF SOLOMONS ISLAND AND 2-1/2 MILES NORTH OF THE U.S.
 HV6738'NAVY ORDNANCE LABORATORY.  IT IS ON THE EDGE OF A STEEP BANK ON
 HV6738'THE EAST SIDE OF PATUXENT RIVER.  THE PROPERTY IS OWNED BY
 HV6738'MR. DOUGLASS BANRAN OF AUSBY, MARYLAND.
 HV6738'
 HV6738'TO REACH THE STATION FROM THE ENTRANCE TO THE U.S. NAVY ORDNANCE
 HV6738'LABORATORY AT SOLOMONS ISLAND, GO NORTHERLY ON HIGHWAY 2 FOR
 HV6738'2.7 MILES TO A SIDE ROAD LEFT.  TURN LEFT AND GO WEST ON MILL RIDGE
 HV6738'ROAD FOR 0.45 MILE TO A FORK.  TURN SHARP LEFT AND GO SOUTH AND
 HV6738'WEST ON TURNER ROAD FOR 1.2 MILES TO A FORK AT THE ENTRANCE TO
 HV6738'THE TURNER RANCH.  TURN LEFT ENTERING RANCH AND GO SOUTH ON A
 HV6738'FARM ROAD FOR 0.3 MILE TO A SIDE ROAD LEFT AT A BARN.  KEEP
 HV6738'STRAIGHT AHEAD AND GO WESTERLY ON A FARM ROAD FOR 0.1 MILE TO
 HV6738'A GATE AT ANOTHER BARN.  PASS THROUGH THE GATE AND CONTINUE WESTERLY
 HV6738'ACROSS A FIELD FOR 0.25 MILE TO THE STATION SITE.
 HV6738'
 HV6738'THE STATION MARK IS A STANDARD DISK STAMPED CREEK 2 1974, SET IN
 HV6738'THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS 1 INCH BELOW
 HV6738'THE SURFACE OF THE GROUND.  IT IS 150 FEET SOUTH OF A SMALL
 HV6738'GULLY, 86 FEET EAST OF A HIGH BANK AT THE SHORE LINE, 70 FEET
 HV6738'SOUTHEAST OF A 18-INCH TREE AND 2 FEET SOUTH OF A WITNESS POST.
 HV6738'
 HV6738'REFERENCE MARK 1 IS A STANDARD DISK STAMPED 1 1943, SET IN THE
 HV6738'TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS ABOUT 1
 HV6738'INCH.  IT IS 64.5 FEET SOUTHWEST OF THE WITNESS POST, 50.6 FEET
 HV6738'SOUTH OF THE 18-INCH TREE AND 10 FEET EAST OF THE SHORE LINE.
 HV6738'
 HV6738'REFERENCE MARK 2 IS A STANDARD DISK STAMPED NO 2 1943, SET IN THE
 HV6738'TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 HV6738'SURFACE.  IT IS 64 FEET NORTHWEST OF THE WITNESS POST, 18 FEET
 HV6738'EAST OF THE SHORE LINE, 17.5 FEET NORTHEAST OF THE 18-INCH TREE
 HV6738'AND 6 FEET SOUTHEAST OF A 6-INCH TREE.
 HV6738'
 HV6738'THE AZIMUTH MARK IS A NARYLAND DEAPRTMENT OF NATURAL RESOURCES
 HV6738'MARKER STAMPED MDTF 60.  IT IS A 2 INCH ROUND CAP ATOP A 3 FOOT
 HV6738'LONG COPPER ROD.  THE ROD IS DRIVEN INTO THE GROUND 3 FEET AND THE
 HV6738'TOP IS FLUSH WITH THE SURFACE.  IT IS 44.6 FEET SOUTHEAST OF A
 HV6738'LADDER LEADING TO THE SHORE, 4 FEET EAST OF THE SHORE AND 3 FEET
 HV6738'WEST OF A GRASSY SLOPE.
 HV6738'
 HV6738'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTH ALONG THE
 HV6738'SHORE LINE FOR 0.45 MILE TO A SMALL BRIDGE JUST BEFORE REACHING A
 HV6738'HOUSE ON A SMALL HILL.  LEAVE ROAD AND CONTINUE SOUTH ALONG THE
 HV6738'SHORE LINE FOR 0.05 MILE TO THE MARK ON A NARROW STRIP OF LAND
 HV6738'BETWEEN THE SHORE LINE AND A GRASSY SLOPE.
 HV6738'
 HV6738'STUMP (MSFC) RM 1 1907 IS A MARYLAND SHELL FISH COMMISSION MARKER.
 HV6738'IT IS A 10-INCH SQUARE CONCRETE MONUMENT WHICH HAS A LARGE TRIANGLE
 HV6738'IN THE TOP WITH A 3/4 INCH HOLE IN THE CENTER OF THE TRIANGLE.
 HV6738'IT ALSO HAS M S F C ENGRAVED IN THE SIDES OF THE TRIANGLE AND
 HV6738'USCS ON THE BOTTOM OF THE TRIANGLE.  THE MONUMENT IS ABOUT 2 FEET
 HV6738'LONG AND IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 67 FEET
 HV6738'NORTHWEST OF THE WITNESS POST, 18 FEET EAST OF THE SHORE LINE,
 HV6738'6.2 FEET SOUTHOF THE 18-INCH TREE AND 1 FOOT WEST OF A WITNESS
 HV6738'POST.
 HV6738'
 HV6738'THIS STATION WAS ESTABLISHED TO TAKE THE PLACE OF TRIANGULATION
 HV6738'STATION CREEK 1943 WHICH IS LESS THAN 1 FOOT FROM A 30 FOOT
 HV6738'BANK.  CREEK 1943 WILL WASH AWAY WITHIN A FEW WEEKS.  THE
 HV6738'REFERENCE MARKS WHICH ARE USED FOR THIS STATION WERE THE REFERENCE
 HV6738'MARKS FOR CREEK 1943.  THE REFERENCE MARKS ARE IN NO DANGER OF
 HV6738'WASHING AWAY.  THE AREA IS TO HAVE A BULK HEAD CONSTRUCTED AROUND IT
 HV6738'WITHIN A FEW YEARS AND AT THAT TIME THERE WILL BE NO DANGER
 HV6738'OF ANY OF THE MARKS WASHING AWAY.
 HV6738'
 HV6738'NEAREST TOWN--SOLOMONS ISLAND.
 HV6738
 HV6738                          STATION RECOVERY (1981)
 HV6738
 HV6738'RECOVERY NOTE BY MD DEPT OF NAT RES 1981 (LW)
 HV6738'CREEK 2 1974 RECOVERED GOOD 3 INCHES BELOW GROUND.
 HV6738'
 HV6738'RM 1 (NO 1 1943) RECOVERED GOOD 3 INCHES ABOVE GROUND.
 HV6738'
 HV6738'USCS MSFC (STUMP MSFC RM 1 1907) FEW - TOP CRACKED - FLUSH.
 HV6738'
 HV6738'W.P. ON ANGLE OF PATUXENT R LT 12 STA IS 19.45 M NW OF RM 1
 HV6738'IN FIELD CONCRETE MASS LYING ON BEACH BELOW BLUFF PROBABLY STA
 HV6738'CREEK 1943.
 HV6738'
 HV6738'PROPERTY OWNER KNOWS APPROXIMATE POSITION OF MARKS.
 HV6738
 HV6738                          STATION RECOVERY (1988)
 HV6738
 HV6738'RECOVERY NOTE BY MD DEPT OF NAT RES 1988 (LW)
 HV6738'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6847 ***********************************************************************
 HV6847  DESIGNATION -  CREMONA MSFC 1908
 HV6847  PID         -  HV6847
 HV6847  STATE/COUNTY-  MD/ST MARYS
 HV6847  COUNTRY     -  US
 HV6847  USGS QUAD   -  MECHANICSVILLE (2016)
 HV6847
 HV6847                         *CURRENT SURVEY CONTROL
 HV6847  ______________________________________________________________________
 HV6847* NAD 83(1993) POSITION- 38 27 25.00420(N) 076 39 28.43330(W)   ADJUSTED
 HV6847* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6847  ______________________________________________________________________
 HV6847  GEOID HEIGHT    -        -33.788 (meters)                     GEOID18
 HV6847  LAPLACE CORR    -         -3.64  (seconds)                    DEFLEC18
 HV6847  HORZ ORDER      -  SECOND
 HV6847
 HV6847.The horizontal coordinates were established by classical geodetic methods
 HV6847.and adjusted by the National Geodetic Survey in November 1994.
 HV6847
 HV6847.The orthometric height was scaled from a topographic map.
 HV6847
 HV6847.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6847.GEOID18 height accuracy estimate available here.
 HV6847
 HV6847.Click photographs - Photos may exist for this station.
 HV6847
 HV6847.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6847
 HV6847. The following values were computed from the NAD 83(1993) position.
 HV6847
 HV6847;                    North         East     Units Scale Factor Converg.
 HV6847;SPC MD       -    87,780.123   429,859.473   MT  0.99997640   +0 12 53.0
 HV6847;SPC MD       -   287,991.95  1,410,297.29   sFT  0.99997640   +0 12 53.0
 HV6847;UTM  18      - 4,257,817.874   355,344.175   MT  0.99985770   -1 01 52.6
 HV6847
 HV6847!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6847!SPC MD       -   1.00000518  x   0.99997640  =   0.99998158
 HV6847!UTM  18      -   1.00000518  x   0.99985770  =   0.99986288
 HV6847
 HV6847:                Primary Azimuth Mark                     Grid Az
 HV6847:SPC MD       -  COLLINS MSFC 1908                        355 18 34.6
 HV6847:UTM  18      -  COLLINS MSFC 1908                        356 33 20.2
 HV6847
 HV6847_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5534457817(NAD 83)
 HV6847
 HV6847|---------------------------------------------------------------------|
 HV6847| PID    Reference Object                     Distance      Geod. Az  |
 HV6847|                                                           dddmmss.s |
 HV6847| HV6842 COLLINS MSFC 1908                   APPROX. 1.4 KM 3553127.6 |
 HV6847|---------------------------------------------------------------------|
 HV6847
 HV6847                          SUPERSEDED SURVEY CONTROL
 HV6847
 HV6847  NAD 83(1991)-  38 27 25.00430(N)    076 39 28.43453(W) AD(       ) 2
 HV6847  NAD 83(1986)-  38 27 25.00363(N)    076 39 28.44848(W) AD(       ) 2
 HV6847  NAD 27      -  38 27 24.55700(N)    076 39 29.60200(W) AD(       ) 2
 HV6847  USSD        -  38 27 24.91300(N)    076 39 29.34100(W) AD(       ) 3
 HV6847
 HV6847.Superseded values are not recommended for survey control.
 HV6847
 HV6847.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6847.See file dsdata.pdf to determine how the superseded data were derived.
 HV6847
 HV6847_MARKER: H = DRILL HOLE
 HV6847_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6847_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6847+STABILITY: SURFACE MOTION
 HV6847
 HV6847  HISTORY     - Date     Condition        Report By
 HV6847  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6847  HISTORY     - 1930     SEE DESCRIPTION  MDDNR
 HV6847  HISTORY     - 1953     SEE DESCRIPTION  USGS
 HV6847
 HV6847                          STATION DESCRIPTION
 HV6847
 HV6847'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6847'STATION IS ON THE SW SHORE OF PATUXENT RIVER, ABOUT MIDWAY BETWEEN
 HV6847'CREMONA AND PERSIMMON CREEKS, IN AN ORCHARD ON A FARM KNOWN AS
 HV6847'CREMONA ABOUT 6 FEET ABOVE HIGH WATER, 10 YARDS S OF EDGE OF RIVER
 HV6847'BANK, 7 YARDS S OF RAIL FENCE WHICH RUNS W AND E TO DOORYARD
 HV6847'FENCE, 36 YARDS E OF RAIL FENCE OF CORNFIELD, 75 YARDS N OF RAIL
 HV6847'FENCE AT CORNFIELD, AND 53 YARDS W OF PICKET FENCE.  SEVERAL
 HV6847'MOUNTAIN DWARF CHERRY TREES STAND BETWEEN FENCE AND RIVER-BANK
 HV6847'EDGE.  STATION MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6847'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6847'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.
 HV6847'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6847'DISTANCES AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF
 HV6847'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 15-INCH APPLE TREE,
 HV6847'16.11 METERS (52.9 FEET), S 4 DEG 47 MIN W.  CORNER OF FIELD, 87
 HV6847'YARDS, S 86 DEG 9 MIN W.  CORNER OF FIELD, 38 YARDS, N 42 DEG 14
 HV6847'MIN W.  NEAR END OF PEAK OF ROOF OF YOUNG HANCE HOUSE, 3 MILES, S
 HV6847'79 DEG 20 MIN E.  NAIL IN BLAZE IN 24-INCH APPLE TREE, 24.55
 HV6847'METERS (80.5 FEET).  S 58 DEG 8 MIN E.  NAIL IN BLAZE IN 16-INCH
 HV6847'APPLE TREE, 13.12 METERS (43.0 FEET), S 33 DEG 3 MIN E.
 HV6847
 HV6847                          STATION RECOVERY (1930)
 HV6847
 HV6847'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6847'FOUND STONE WASHED DOWN THE BANK.  SET UP WHERE FOUND AND PILED
 HV6847'OTHER STONES FOR PROTECTION.  ERECTED TRIPOD AND A CUT-IN SHOWS
 HV6847'APPROXIMATELY SAME LOCATION.
 HV6847
 HV6847                          STATION RECOVERY (1953)
 HV6847
 HV6847'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV6847'STATION WAS DISTURBED.  MONUMENT FOUND ON SIDE AT THE APPROXIMATE
 HV6847'LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV3999 ***********************************************************************
 HV3999  DESIGNATION -  CREST WSSD 1928
 HV3999  PID         -  HV3999
 HV3999  STATE/COUNTY-  MD/MONTGOMERY
 HV3999  COUNTRY     -  US
 HV3999  USGS QUAD   -  WASHINGTON WEST (2016)
 HV3999
 HV3999                         *CURRENT SURVEY CONTROL
 HV3999  ______________________________________________________________________
 HV3999* NAD 83(1993) POSITION- 38 57 04.23709(N) 077 05 58.62971(W)   ADJUSTED
 HV3999* NAVD 88 ORTHO HEIGHT -    94.    (meters)      308.    (feet) SCALED
 HV3999  ______________________________________________________________________
 HV3999  GEOID HEIGHT    -        -31.909 (meters)                     GEOID18
 HV3999  LAPLACE CORR    -         -2.07  (seconds)                    DEFLEC18
 HV3999  HORZ ORDER      -  THIRD
 HV3999
 HV3999.The horizontal coordinates were established by classical geodetic methods
 HV3999.and adjusted by the National Geodetic Survey in November 1994.
 HV3999
 HV3999.The orthometric height was scaled from a topographic map.
 HV3999
 HV3999.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV3999.GEOID18 height accuracy estimate available here.
 HV3999
 HV3999.Click photographs - Photos may exist for this station.
 HV3999
 HV3999.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV3999
 HV3999. The following values were computed from the NAD 83(1993) position.
 HV3999
 HV3999;                    North         East     Units Scale Factor Converg.
 HV3999;SPC MD       -   142,591.094   391,364.833   MT  0.99995071   -0 03 45.1
 HV3999;SPC MD       -   467,817.61  1,284,002.79   sFT  0.99995071   -0 03 45.1
 HV3999;SPC VA N     - 2,143,507.139 3,621,384.344   MT  0.99996530   +0 52 26.4
 HV3999;SPC VA N     - 7,032,489.67 11,881,158.47   sFT  0.99996530   +0 52 26.4
 HV3999;UTM  18      - 4,313,454.928   318,056.770   MT  1.00000764   -1 19 13.1
 HV3999
 HV3999!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV3999!SPC MD       -   0.99999029  x   0.99995071  =   0.99994100
 HV3999!SPC VA N     -   0.99999029  x   0.99996530  =   0.99995559
 HV3999!UTM  18      -   0.99999029  x   1.00000764  =   0.99999793
 HV3999
 HV3999:                Primary Azimuth Mark                     Grid Az
 HV3999:SPC MD       -  CHEVY RESET                              029 00 39.4
 HV3999:SPC VA N     -  CHEVY RESET                              028 04 27.9
 HV3999:UTM  18      -  CHEVY RESET                              030 16 07.4
 HV3999
 HV3999_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1805613454(NAD 83)
 HV3999
 HV3999|---------------------------------------------------------------------|
 HV3999| PID    Reference Object                     Distance      Geod. Az  |
 HV3999|                                                           dddmmss.s |
 HV3999| HV4172 CHEVY RESET                         APPROX. 3.4 KM 0285654.3 |
 HV3999|---------------------------------------------------------------------|
 HV3999
 HV3999                          SUPERSEDED SURVEY CONTROL
 HV3999
 HV3999  NAD 83(1991)-  38 57 04.23638(N)    077 05 58.63094(W) AD(       ) 3
 HV3999  NAD 83(1986)-  38 57 04.23608(N)    077 05 58.64077(W) AD(       ) 3
 HV3999  NAD 27      -  38 57 03.83900(N)    077 05 59.71000(W) AD(       ) 3
 HV3999
 HV3999.Superseded values are not recommended for survey control.
 HV3999
 HV3999.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV3999.See file dsdata.pdf to determine how the superseded data were derived.
 HV3999
 HV3999_MARKER: Z = SEE DESCRIPTION
 HV3999_SETTING: 0 = UNSPECIFIED SETTING
 HV3999_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV3999_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV3999+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2002
 HV3999
 HV3999  HISTORY     - Date     Condition        Report By
 HV3999  HISTORY     - 1955     MONUMENTED       WSSC
 HV3999  HISTORY     - 20020311 GOOD             USPSQD
 HV3999
 HV3999                          STATION DESCRIPTION
 HV3999
 HV3999'DESCRIBED BY WASH SUBURB SAN COMM 1955 (JHP)
 HV3999'LOCATION--S SIDE OF BAYARD BOULEVARD AND 300 FT. NW OF WESTERN
 HV3999'AVENUE.  BRASS SCREW IN CONCRETE MONUMENT UNDER LAMPHOLE COVER.
 HV3999'
 HV3999'THIS IS A TRAVERSE STATION.
 HV3999
 HV3999                          STATION RECOVERY (2002)
 HV3999
 HV3999'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV3999'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6278 ***********************************************************************
 JV6278  DESIGNATION -  CRESWELL
 JV6278  PID         -  JV6278
 JV6278  STATE/COUNTY-  MD/HARFORD
 JV6278  COUNTRY     -  US
 JV6278  USGS QUAD   -  BEL AIR (2016)
 JV6278
 JV6278                         *CURRENT SURVEY CONTROL
 JV6278  ______________________________________________________________________
 JV6278* NAD 83(2011) POSITION- 39 30 45.67907(N) 076 16 03.66463(W)   ADJUSTED
 JV6278* NAD 83(2011) ELLIP HT-    41.550 (meters)        (06/27/12)   ADJUSTED
 JV6278* NAD 83(2011) EPOCH   -  2010.00
 JV6278* NAVD 88 ORTHO HEIGHT -    74.509 (meters)      244.45  (feet) ADJUSTED
 JV6278  ______________________________________________________________________
 JV6278  GEOID HEIGHT    -        -32.978 (meters)                     GEOID18
 JV6278  NAD 83(2011) X  -  1,169,682.301 (meters)                     COMP
 JV6278  NAD 83(2011) Y  - -4,786,495.588 (meters)                     COMP
 JV6278  NAD 83(2011) Z  -  4,036,416.888 (meters)                     COMP
 JV6278  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 JV6278  DYNAMIC HEIGHT  -         74.472 (meters)      244.33  (feet) COMP
 JV6278  MODELED GRAVITY -    980,120.0   (mgal)                       NAVD 88
 JV6278
 JV6278  VERT ORDER      -  FIRST     CLASS II
 JV6278
 JV6278  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6278  Standards:
 JV6278         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6278            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6278  -------------------------------------------------------------------
 JV6278  NETWORK    1.19   2.16           0.53   0.39   1.10      0.49604969
 JV6278  -------------------------------------------------------------------
 JV6278  Click here for local accuracies and other accuracy information.
 JV6278
 JV6278.The horizontal coordinates were established by GPS observations
 JV6278.and adjusted by the National Geodetic Survey in June 2012.
 JV6278
 JV6278.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6278.been affixed to the stable North American tectonic plate. See 
 JV6278.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6278
 JV6278.The horizontal coordinates are valid at the epoch date displayed above
 JV6278.which is a decimal equivalence of Year/Month/Day.
 JV6278
 JV6278.The orthometric height was determined by differential leveling and
 JV6278.adjusted by the NATIONAL GEODETIC SURVEY
 JV6278.in June 1991.
 JV6278
 JV6278.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6278.GEOID18 height accuracy estimate available here.
 JV6278
 JV6278.Click photographs - Photos may exist for this station.
 JV6278
 JV6278.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6278
 JV6278.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6278
 JV6278.The ellipsoidal height was determined by GPS observations
 JV6278.and is referenced to NAD 83.
 JV6278
 JV6278.The dynamic height is computed by dividing the NAVD 88
 JV6278.geopotential number by the normal gravity value computed on the
 JV6278.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6278.degrees latitude (g = 980.6199 gals.).
 JV6278
 JV6278.The modeled gravity was interpolated from observed gravity values.
 JV6278
 JV6278. The following values were computed from the NAD 83(2011) position.
 JV6278
 JV6278;                    North         East     Units Scale Factor Converg.
 JV6278;SPC MD       -   205,176.286   462,977.548   MT  1.00001157   +0 27 34.7
 JV6278;SPC MD       -   673,149.20  1,518,952.17   sFT  1.00001157   +0 27 34.7
 JV6278;UTM  18      - 4,374,439.809   391,023.834   MT  0.99974621   -0 48 23.9
 JV6278
 JV6278!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6278!SPC MD       -   0.99999348  x   1.00001157  =   1.00000505
 JV6278!UTM  18      -   0.99999348  x   0.99974621  =   0.99973969
 JV6278
 JV6278_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9102374439(NAD 83)
 JV6278
 JV6278                          SUPERSEDED SURVEY CONTROL
 JV6278
 JV6278  NAD 83(2007)-  39 30 45.67921(N)    076 16 03.66532(W) AD(2002.00) 0
 JV6278  ELLIP H (02/10/07)   41.568  (m)                       GP(2002.00)    
 JV6278  ELLIP H (08/30/02)   41.574  (m)                       GP(       ) 4 2
 JV6278  NAD 83(1991)-  39 30 45.67856(N)    076 16 03.66579(W) AD(       ) 1
 JV6278  ELLIP H (01/27/92)   41.532  (m)                       GP(       ) 4 1
 JV6278  NAD 83(1986)-  39 30 45.67316(N)    076 16 03.67256(W) AD(       ) 1
 JV6278  NGVD 29              74.75   (m)          245.2    (f) LEVELING    3  
 JV6278
 JV6278.Superseded values are not recommended for survey control.
 JV6278
 JV6278.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6278.See file dsdata.pdf to determine how the superseded data were derived.
 JV6278
 JV6278_MARKER: DD = SURVEY DISK
 JV6278_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6278_STAMPING: 29 CRESWELL 1989
 JV6278_MARK LOGO: MD-025
 JV6278_PROJECTION: FLUSH
 JV6278_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6278_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6278+STABILITY: SURFACE MOTION
 JV6278_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6278+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2025
 JV6278
 JV6278  HISTORY     - Date     Condition        Report By
 JV6278  HISTORY     - 1989     MONUMENTED       RDA
 JV6278  HISTORY     - 19931209 GOOD             GEOMET
 JV6278  HISTORY     - 20250220 GOOD             INDIV
 JV6278
 JV6278                          STATION DESCRIPTION
 JV6278
 JV6278'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6278'THE STATION IS LOCATED IN CENTRAL HARFORD COUNTY, MARYLAND ABOUT 3.5
 JV6278'MILES SOUTH OF THE VILLAGE OF CHURCHVILLE ON STATE HIGHWAY 136.  TO
 JV6278'REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 22 AND STATE
 JV6278'HIGHWAY 136 PROCEED SOUTH ALONG HIGHWAY 136 3.45 MILES TO THE STATION
 JV6278'ON THE LEFT.  THE STATION IS A STANDARD HARFORD COUNTY STATION DISC
 JV6278'SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 29 CRESWELL 1989.
 JV6278'THE STATION IS 143.8 FEET NORTHEAST FROM G AND E POLE 348252, 24.5
 JV6278'FEET SOUTHWEST FROM THE POLE NUMBER 118, AND 9.3 FEET SOUTHEAST FROM
 JV6278'THE SOUTH EDGE OF PAVEMENT OF HIGHWAY 136.
 JV6278
 JV6278                          STATION RECOVERY (1993)
 JV6278
 JV6278'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6278'RECOVERED IN GOOD CONDITION.
 JV6278
 JV6278                          STATION RECOVERY (2025)
 JV6278
 JV6278'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2025 (CH)
 JV6278'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ1151 ***********************************************************************
 DQ1151  DESIGNATION -  CRIS
 DQ1151  PID         -  DQ1151
 DQ1151  STATE/COUNTY-  MD/SOMERSET
 DQ1151  COUNTRY     -  US
 DQ1151  USGS QUAD   -  CRISFIELD (2016)
 DQ1151
 DQ1151                         *CURRENT SURVEY CONTROL
 DQ1151  ______________________________________________________________________
 DQ1151* NAD 83(2011) POSITION- 37 59 27.28222(N) 075 50 38.18377(W)   ADJUSTED
 DQ1151* NAD 83(2011) ELLIP HT-   -34.351 (meters)        (02/16/16)   ADJUSTED
 DQ1151* NAD 83(2011) EPOCH   -  2010.00
 DQ1151* NAVD 88 ORTHO HEIGHT -     1.7   (meters)        6.    (feet) GPS OBS
 DQ1151  ______________________________________________________________________
 DQ1151  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DQ1151  GEOID HEIGHT    -        -36.100 (meters)                     GEOID12B
 DQ1151  GEOID HEIGHT    -        -36.088 (meters)                     GEOID18
 DQ1151  NAD 83(2011) X  -  1,230,895.539 (meters)                     COMP
 DQ1151  NAD 83(2011) Y  - -4,880,186.385 (meters)                     COMP
 DQ1151  NAD 83(2011) Z  -  3,904,627.857 (meters)                     COMP
 DQ1151  LAPLACE CORR    -         -1.56  (seconds)                    DEFLEC18
 DQ1151
 DQ1151  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ1151  Standards:
 DQ1151         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ1151            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ1151  -------------------------------------------------------------------
 DQ1151  NETWORK    0.60   1.55           0.27   0.21   0.79     -0.17074492
 DQ1151  -------------------------------------------------------------------
 DQ1151  Click here for local accuracies and other accuracy information.
 DQ1151
 DQ1151.The horizontal coordinates were established by GPS observations
 DQ1151.and adjusted by the ARCHER-SHEE LAND SURVEYING in February 2016.
 DQ1151
 DQ1151.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ1151.been affixed to the stable North American tectonic plate. See 
 DQ1151.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DQ1151
 DQ1151.The horizontal coordinates are valid at the epoch date displayed above
 DQ1151.which is a decimal equivalence of Year/Month/Day.
 DQ1151
 DQ1151.The orthometric height was determined by GPS observations and a
 DQ1151.high-resolution geoid model.
 DQ1151
 DQ1151.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ1151.GEOID18 height accuracy estimate available here.
 DQ1151
 DQ1151.Click photographs - Photos may exist for this station.
 DQ1151
 DQ1151.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DQ1151
 DQ1151.The Laplace correction was computed from DEFLEC18 derived deflections.
 DQ1151
 DQ1151.The ellipsoidal height was determined by GPS observations
 DQ1151.and is referenced to NAD 83.
 DQ1151
 DQ1151. The following values were computed from the NAD 83(2011) position.
 DQ1151
 DQ1151;                    North         East     Units Scale Factor Converg.
 DQ1151;SPC MD       -    36,636.261   501,556.335   MT  1.00006813   +0 43 32.1
 DQ1151;SPC MD       -   120,197.47  1,645,522.74   sFT  1.00006813   +0 43 32.1
 DQ1151;UTM  18      - 4,205,142.613   425,894.529   MT  0.99966764   -0 31 10.2
 DQ1151
 DQ1151!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ1151!SPC MD       -   1.00000539  x   1.00006813  =   1.00007352
 DQ1151!UTM  18      -   1.00000539  x   0.99966764  =   0.99967303
 DQ1151
 DQ1151_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2589405142(NAD 83)
 DQ1151
 DQ1151                          SUPERSEDED SURVEY CONTROL
 DQ1151
 DQ1151.No superseded survey control is available for this station.
 DQ1151
 DQ1151_MARKER: DD = SURVEY DISK
 DQ1151_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DQ1151_SP_SET: CURB
 DQ1151_STAMPING: CRIS 1963
 DQ1151_MARK LOGO: MDBCSM
 DQ1151_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DQ1151_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DQ1151+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2015
 DQ1151
 DQ1151  HISTORY     - Date     Condition        Report By
 DQ1151  HISTORY     - 1963     MONUMENTED       MDBCSM
 DQ1151  HISTORY     - 20150519 GOOD             ARCSHE
 DQ1151
 DQ1151                          STATION DESCRIPTION
 DQ1151
 DQ1151'DESCRIBED BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 DQ1151'THE MARK IS LOCATED ABOUT 8.6 MI (13.8 KM) SOUTHWEST OF KINGSTON, 5.2
 DQ1151'MI (8.4 KM) SOUTHWEST OF MARION AND 0.8 MI (1.2 KM) NORTHEAST OF
 DQ1151'CRISFIELD AT THE JUNCTION OF MD 413 AND MD 358.
 DQ1151'
 DQ1151'TO REACH FROM THE POST OFFICE IN CRISFIELD, GO NORTH ON MD 413 FOR MI
 DQ1151'TO THE MARK ON THE LEFT IN A MEDIAN CURB.
 DQ1151'
 DQ1151'IT IS 86.0 FT (26.2 M) EAST OF POWER LINE POLE NUMBER 39710/79569,
 DQ1151'68.4 FT (20.8 M) NORTH OF POWER LINE POLE NUMBER 39717/79560, 49.6 FT
 DQ1151'(15.1 M) SOUTHEAST OF THE CENTERLINE OF MD 413 SOUTHBOUND LANES, 45.5
 DQ1151'FT (13.9 M) WEST OF THE CENTERLINE OF MD 358, 22.4 FT (6.8 M)
 DQ1151'NORTHWEST OF THE CENTERLINE OF MD 413 NORTHBOUND LANES AND ABOUT 0.5
 DQ1151'FT (15 CM) HIGHER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW1986 ***********************************************************************
 FW1986  CBN         -  This is a Cooperative Base Network Control Station.
 FW1986  DESIGNATION -  CRISFIELD
 FW1986  PID         -  FW1986
 FW1986  STATE/COUNTY-  MD/SOMERSET
 FW1986  COUNTRY     -  US
 FW1986  USGS QUAD   -  CRISFIELD (2016)
 FW1986
 FW1986                         *CURRENT SURVEY CONTROL
 FW1986  ______________________________________________________________________
 FW1986* NAD 83(2011) POSITION- 37 58 28.32227(N) 075 51 34.16610(W)   ADJUSTED
 FW1986* NAD 83(2011) ELLIP HT-   -34.962 (meters)        (06/27/12)   ADJUSTED
 FW1986* NAD 83(2011) EPOCH   -  2010.00
 FW1986* NAVD 88 ORTHO HEIGHT -     1.147 (meters)        3.76  (feet) ADJUSTED
 FW1986  ______________________________________________________________________
 FW1986  GEOID HEIGHT    -        -36.097 (meters)                     GEOID18
 FW1986  NAD 83(2011) X  -  1,229,844.157 (meters)                     COMP
 FW1986  NAD 83(2011) Y  - -4,881,604.670 (meters)                     COMP
 FW1986  NAD 83(2011) Z  -  3,903,194.651 (meters)                     COMP
 FW1986  LAPLACE CORR    -         -1.49  (seconds)                    DEFLEC18
 FW1986  DYNAMIC HEIGHT  -          1.146 (meters)        3.76  (feet) COMP
 FW1986  MODELED GRAVITY -    979,970.8   (mgal)                       NAVD 88
 FW1986
 FW1986  VERT ORDER      -  SECOND    CLASS II
 FW1986
 FW1986  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 FW1986  Standards:
 FW1986         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 FW1986            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 FW1986  -------------------------------------------------------------------
 FW1986  NETWORK    0.41   0.82           0.18   0.15   0.42     -0.03470512
 FW1986  -------------------------------------------------------------------
 FW1986  Click here for local accuracies and other accuracy information.
 FW1986
 FW1986.The horizontal coordinates were established by GPS observations
 FW1986.and adjusted by the National Geodetic Survey in June 2012.
 FW1986
 FW1986.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 FW1986.been affixed to the stable North American tectonic plate. See 
 FW1986.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 FW1986
 FW1986.The horizontal coordinates are valid at the epoch date displayed above
 FW1986.which is a decimal equivalence of Year/Month/Day.
 FW1986
 FW1986.The orthometric height was determined by differential leveling and
 FW1986.adjusted by the NATIONAL GEODETIC SURVEY
 FW1986.in April 1995.
 FW1986
 FW1986.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW1986.GEOID18 height accuracy estimate available here.
 FW1986
 FW1986.Click photographs - Photos may exist for this station.
 FW1986
 FW1986.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 FW1986
 FW1986.The Laplace correction was computed from DEFLEC18 derived deflections.
 FW1986
 FW1986.The ellipsoidal height was determined by GPS observations
 FW1986.and is referenced to NAD 83.
 FW1986
 FW1986.The dynamic height is computed by dividing the NAVD 88
 FW1986.geopotential number by the normal gravity value computed on the
 FW1986.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 FW1986.degrees latitude (g = 980.6199 gals.).
 FW1986
 FW1986.The modeled gravity was interpolated from observed gravity values.
 FW1986
 FW1986. The following values were computed from the NAD 83(2011) position.
 FW1986
 FW1986;                    North         East     Units Scale Factor Converg.
 FW1986;SPC MD       -    34,801.223   500,213.042   MT  1.00007254   +0 42 57.0
 FW1986;SPC MD       -   114,177.01  1,641,115.62   sFT  1.00007254   +0 42 57.0
 FW1986;SPC VA S     - 1,185,383.252 3,731,972.703   MT  1.00000145   +1 36 09.3
 FW1986;SPC VA S     - 3,889,044.89 12,243,980.44   sFT  1.00000145   +1 36 09.3
 FW1986;UTM  18      - 4,203,337.916   424,512.241   MT  0.99967018   -0 31 44.0
 FW1986
 FW1986!             -  Elev Factor  x  Scale Factor =   Combined Factor
 FW1986!SPC MD       -   1.00000549  x   1.00007254  =   1.00007803
 FW1986!SPC VA S     -   1.00000549  x   1.00000145  =   1.00000694
 FW1986!UTM  18      -   1.00000549  x   0.99967018  =   0.99967566
 FW1986
 FW1986:                Primary Azimuth Mark                     Grid Az
 FW1986:SPC MD       -  857 1091 B TIDAL                         331 16 49.6
 FW1986:SPC VA S     -  857 1091 B TIDAL                         330 23 37.3
 FW1986:UTM  18      -  857 1091 B TIDAL                         332 31 30.6
 FW1986
 FW1986_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2451203337(NAD 83)
 FW1986
 FW1986|---------------------------------------------------------------------|
 FW1986| PID    Reference Object                     Distance      Geod. Az  |
 FW1986|                                                           dddmmss.s |
 FW1986| DH7941 857 1091 B TIDAL                    498.146 METERS 3315946.6 |
 FW1986|---------------------------------------------------------------------|
 FW1986
 FW1986                          SUPERSEDED SURVEY CONTROL
 FW1986
 FW1986  NAD 83(2007)-  37 58 28.32254(N)    075 51 34.16688(W) AD(2002.00) 0
 FW1986  ELLIP H (02/10/07)  -34.943  (m)                       GP(2002.00)    
 FW1986  ELLIP H (02/12/02)  -34.920  (m)                       GP(       ) 4 1
 FW1986  NAD 83(1991)-  37 58 28.32216(N)    075 51 34.16608(W) AD(       ) B
 FW1986  ELLIP H (10/23/91)  -34.918  (m)                       GP(       ) 4 1
 FW1986  NAVD 88               1.15   (m)            3.8    (f) LEVELING    3  
 FW1986  NGVD 29               1.39   (m)            4.6    (f) LEVELING    3  
 FW1986
 FW1986.Superseded values are not recommended for survey control.
 FW1986
 FW1986.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW1986.See file dsdata.pdf to determine how the superseded data were derived.
 FW1986
 FW1986_MARKER: DH = HORIZONTAL CONTROL DISK
 FW1986_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 FW1986_STAMPING: CRISFIELD 1990
 FW1986_MARK LOGO: NGS
 FW1986_PROJECTION: RECESSED 10 CENTIMETERS
 FW1986_MAGNETIC: N = NO MAGNETIC MATERIAL
 FW1986_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 FW1986+STABILITY: SURFACE MOTION
 FW1986_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 FW1986+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2015
 FW1986
 FW1986  HISTORY     - Date     Condition        Report By
 FW1986  HISTORY     - 1990     MONUMENTED       NGS
 FW1986  HISTORY     - 19901025 GOOD             NGS
 FW1986  HISTORY     - 19910102 GOOD             NGS
 FW1986  HISTORY     - 19941025 GOOD             NOS
 FW1986  HISTORY     - 20000327 GOOD             MDSHA
 FW1986  HISTORY     - 20050917 GOOD             USPSQD
 FW1986  HISTORY     - 20051027 GOOD             NGS
 FW1986  HISTORY     - 20150514 GOOD             ARCSHE
 FW1986
 FW1986                          STATION DESCRIPTION
 FW1986
 FW1986'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 FW1986'0.9 KM (0.6 MI) SOUTHERLY ALONG FOURTH STREET FROM THE INTERSECTION OF
 FW1986'MAIN STREET IN CRISFIELD, THENCE 0.5 KM (0.3 MI) WESTERLY ALONG R.R.
 FW1986'NORRIS HARBOR DRIVE, 27.1 M (88.9 FT) NORTH OF AND LEVEL WITH THE
 FW1986'DRIVE CENTERLINE, 24.8 M (81.4 FT) WEST OF A WITNESS POST AND THE
 FW1986'SOUTHWEST CORNER OF A FENCE, 20.4 M (66.9 FT) SOUTH OF THE SOUTHWEST
 FW1986'CORNER OF A SMALL PARKING LOT, 19.5 M (64.0 FT) NORTH-NORTHEAST OF A
 FW1986'24-INCH MAN HOLE COVER, 16.6 M (54.5 FT) EAST OF THE EAST EDGE OF A
 FW1986'PARKING LOT, AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
 FW1986
 FW1986                          STATION RECOVERY (1991)
 FW1986
 FW1986'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 FW1986'STATION IS LOCATED IN THE SOUTH SECTION OF CRISFIELD, AT THE US COAST
 FW1986'GUARD INSTALLATION AT SOMERS COVE, AND IN A LAWN AREA BETWEEN THE
 FW1986'ENTRANCE LANE AND A LARGE PAVED PARKING LOT.  OWNERSHIP--US COAST
 FW1986'GUARD.
 FW1986'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 413 AND 358 AT THE
 FW1986'NORTHEAST END OF CRISFIELD (NEAR THE BEGINNING OF THE HIGHWAY MEDIAN
 FW1986'AS YOU ENTER TOWN), GO SOUTHWEST ON HIGHWAY 413 FOR 1.30 KM
 FW1986'(0.81 MI) TO A STREET LEFT AT THE SHILOH METHODIST CHURCH ON THE
 FW1986'LEFT.  TURN LEFT, SOUTH, ON SOUTH FOURTH STREET FOR 0.94 KM
 FW1986'(0.58 MI) TO A T-ROAD AT THE MARSH.  TURN RIGHT, WEST, ON NORRIS
 FW1986'HARBOR DRIVE FOR 0.44 KM (0.27 MI) TO THE COAST GUARD INSTALLATION
 FW1986'ENTRANCE ROAD ON THE RIGHT. CONTINUE AHEAD FOR 0.05 KM (0.03 MI) TO
 FW1986'THE STATION ON THE RIGHT.
 FW1986'STATION MARK IS SET IN THE TOP OF A 30-CM ROUND CONCRETE POST 2 CM
 FW1986'BELOW GROUND.  IT IS 27.1 M (88.9 FT) NORTH OF THE ROAD, 16.6 M
 FW1986'(54.5 FT) EAST OF THE EAST EDGE OF THE LARGE PAVED PARKING LOT, 24.7
 FW1986'M (81.0 FT) WEST-SOUTHWEST OF A FIBERGLASS WITNESS POST AT THE
 FW1986'SOUTHWEST CORNER OF A FENCED BASKETBALL COURT USED TO STORE BUOYS,
 FW1986'20.5 M (67.3 FT) SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF A SMALL
 FW1986'PAVED PARKING LOT USED FOR VEHICLE STORAGE, AND 19.4 M (63.6 FT)
 FW1986'NORTH-NORTHEAST OF THE CENTER OF A SEWER MANHOLE COVER.
 FW1986'DESCRIBED BY G.R.HEID.
 FW1986
 FW1986                          STATION RECOVERY (1994)
 FW1986
 FW1986'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1994 (RWD)
 FW1986'RECOVERED AS DESCRIBED.
 FW1986
 FW1986                          STATION RECOVERY (2000)
 FW1986
 FW1986'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 FW1986'RECOVERED AS DESCRIBED.
 FW1986
 FW1986                          STATION RECOVERY (2005)
 FW1986
 FW1986'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 FW1986'AS DESCRIBED
 FW1986
 FW1986                          STATION RECOVERY (2005)
 FW1986
 FW1986'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 FW1986'RECOVERED AS DESCRIBED.
 FW1986
 FW1986                          STATION RECOVERY (2015)
 FW1986
 FW1986'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 FW1986'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW1322 ***********************************************************************
 FW1322  DESIGNATION -  CRISFIELD STANDPIPE
 FW1322  PID         -  FW1322
 FW1322  STATE/COUNTY-  MD/SOMERSET
 FW1322  COUNTRY     -  US
 FW1322  USGS QUAD   -  CRISFIELD (2016)
 FW1322
 FW1322                         *CURRENT SURVEY CONTROL
 FW1322  ______________________________________________________________________
 FW1322* NAD 83(1993) POSITION- 37 58 59.53907(N) 075 50 39.06527(W)   ADJUSTED
 FW1322  ______________________________________________________________________
 FW1322  GEOID HEIGHT    -        -36.098 (meters)                     GEOID18
 FW1322  LAPLACE CORR    -         -1.55  (seconds)                    DEFLEC18
 FW1322  HORZ ORDER      -  THIRD
 FW1322
 FW1322.The horizontal coordinates were established by classical geodetic methods
 FW1322.and adjusted by the National Geodetic Survey in November 1994.
 FW1322
 FW1322.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW1322.GEOID18 height accuracy estimate available here.
 FW1322
 FW1322.Click photographs - Photos may exist for this station.
 FW1322
 FW1322.The Laplace correction was computed from DEFLEC18 derived deflections.
 FW1322
 FW1322. The following values were computed from the NAD 83(1993) position.
 FW1322
 FW1322;                    North         East     Units Scale Factor Converg.
 FW1322;SPC MD       -    35,780.613   501,545.656   MT  1.00007020   +0 43 31.5
 FW1322;SPC MD       -   117,390.23  1,645,487.71   sFT  1.00007020   +0 43 31.5
 FW1322;SPC VA S     - 1,186,383.077 3,733,289.912   MT  1.00000306   +1 36 42.8
 FW1322;SPC VA S     - 3,892,325.15 12,248,301.99   sFT  1.00000306   +1 36 42.8
 FW1322;UTM  18      - 4,204,287.742   425,865.273   MT  0.99966769   -0 31 10.4
 FW1322
 FW1322_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2586504287(NAD 83)
 FW1322
 FW1322                          SUPERSEDED SURVEY CONTROL
 FW1322
 FW1322  NAD 83(1991)-  37 58 59.54138(N)    075 50 39.06783(W) AD(       ) 3
 FW1322  NAD 83(1986)-  37 58 59.53778(N)    075 50 39.09390(W) AD(       ) 3
 FW1322  NAD 27      -  37 58 59.09100(N)    075 50 40.33300(W) AD(       ) 3
 FW1322
 FW1322.Superseded values are not recommended for survey control.
 FW1322
 FW1322.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW1322.See file dsdata.pdf to determine how the superseded data were derived.
 FW1322
 FW1322_MARKER: 52 = STANDPIPE TANK
 FW1322_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 FW1322+SATELLITE: SATELLITE OBSERVATIONS - October 24, 2004
 FW1322
 FW1322  HISTORY     - Date     Condition        Report By
 FW1322  HISTORY     - 1932     FIRST OBSERVED   CGS
 FW1322  HISTORY     - 1942     GOOD             CGS
 FW1322  HISTORY     - 20041024 GOOD             GEOCAC
 FW1322
 FW1322                          STATION DESCRIPTION
 FW1322
 FW1322'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (FLG)
 FW1322'THE STATION IS THE CENTER OF A GREY STANDPIPE, WHICH IS 100 FEET
 FW1322'HIGH AND 27 FEET IN DIAMETER, LOCATED IN CRISFIELD,
 FW1322'MARYLAND.  STATION IS 168 FEET E OF CHESAPEAKE STREET AND 113 FEET
 FW1322'N OF SOMERSET STREET.
 FW1322
 FW1322                          STATION RECOVERY (2004)
 FW1322
 FW1322'RECOVERY NOTE BY GEOCACHING 2004 (DPH)
 FW1322'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6419 ***********************************************************************
 HV6419  DESIGNATION -  CROCH 1910
 HV6419  PID         -  HV6419
 HV6419  STATE/COUNTY-  MD/DORCHESTER
 HV6419  COUNTRY     -  US
 HV6419  USGS QUAD   -  WINGATE (2016)
 HV6419
 HV6419                         *CURRENT SURVEY CONTROL
 HV6419  ______________________________________________________________________
 HV6419* NAD 83(1991) POSITION- 38 15 11.15230(N) 076 02 21.50605(W)   ADJUSTED
 HV6419* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6419  ______________________________________________________________________
 HV6419  GEOID HEIGHT    -        -35.544 (meters)                     GEOID18
 HV6419  LAPLACE CORR    -         -1.80  (seconds)                    DEFLEC18
 HV6419  HORZ ORDER      -  THIRD
 HV6419
 HV6419.The horizontal coordinates were established by classical geodetic methods
 HV6419.and adjusted by the National Geodetic Survey in January 1992.
 HV6419
 HV6419.The orthometric height was scaled from a topographic map.
 HV6419
 HV6419.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6419.GEOID18 height accuracy estimate available here.
 HV6419
 HV6419.Click photographs - Photos may exist for this station.
 HV6419
 HV6419.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6419
 HV6419. The following values were computed from the NAD 83(1991) position.
 HV6419
 HV6419;                    North         East     Units Scale Factor Converg.
 HV6419;SPC MD       -    65,539.079   484,088.344   MT  1.00000849   +0 36 10.7
 HV6419;SPC MD       -   215,022.80  1,588,213.18   sFT  1.00000849   +0 36 10.7
 HV6419;UTM  18      - 4,234,408.025   409,064.926   MT  0.99970184   -0 38 36.7
 HV6419
 HV6419!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6419!SPC MD       -   1.00000561  x   1.00000849  =   1.00001410
 HV6419!UTM  18      -   1.00000561  x   0.99970184  =   0.99970745
 HV6419
 HV6419:                Primary Azimuth Mark                     Grid Az
 HV6419:SPC MD       -  ROAST 1910                               019 05 57.3
 HV6419:UTM  18      -  ROAST 1910                               020 20 44.7
 HV6419
 HV6419_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0906434408(NAD 83)
 HV6419
 HV6419|---------------------------------------------------------------------|
 HV6419| PID    Reference Object                     Distance      Geod. Az  |
 HV6419|                                                           dddmmss.s |
 HV6419| HV6413 ROAST 1910                          APPROX. 3.3 KM 0194208.0 |
 HV6419|---------------------------------------------------------------------|
 HV6419
 HV6419                          SUPERSEDED SURVEY CONTROL
 HV6419
 HV6419  NAD 83(1986)-  38 15 11.15180(N)    076 02 21.52507(W) AD(       ) 3
 HV6419  NAD 27      -  38 15 10.71400(N)    076 02 22.75100(W) AD(       ) 3
 HV6419  USSD        -  38 15 11.09300(N)    076 02 22.51600(W) AD(       ) 3
 HV6419
 HV6419.Superseded values are not recommended for survey control.
 HV6419
 HV6419.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6419.See file dsdata.pdf to determine how the superseded data were derived.
 HV6419
 HV6419_MARKER: H = DRILL HOLE
 HV6419_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6419_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6419+STABILITY: SURFACE MOTION
 HV6419
 HV6419  HISTORY     - Date     Condition        Report By
 HV6419  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6419  HISTORY     - 1942     GOOD             CGS
 HV6419  HISTORY     - 1950     GOOD             CGS
 HV6419  HISTORY     - 1961     GOOD             CGS
 HV6419  HISTORY     - 1965     GOOD             CGS
 HV6419
 HV6419                          STATION DESCRIPTION
 HV6419
 HV6419'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6419'STATION IS ON THE WESTERN SHORE OF FISHING BAY, ABOUT 4-1/2
 HV6419'MILES NW OF SHARKFIN SHOAL LIGHT, AND 1/4 MILE N-NE OF ENTRANCE
 HV6419'TO TEDIOUS CREEK, ON MARSH, ABOUT 1 FOOT ABOVE HIGH WATER, 45
 HV6419'YARDS SW OF SHORE, 50 YARDS W OF SHORE, 60 YARDS NW OF SHORE,
 HV6419'AND 150 YARDS N OF A SMALL MARSH ISLAND COVERED WITH WATER
 HV6419'BUSHES.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HV6419'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6419'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6419'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6419'COUNTER-SUNK IN TOP OF POST.  THE SUBSURFACE MARK IS CENTER
 HV6419'OF A 2-INCH DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW THE
 HV6419'BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6419'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT PEAK OF
 HV6419'HOUSE, 1-1/2 MILES, S 20 DEG 26 MIN W.  CHIMNEY IN MIDDLE OF
 HV6419'LARGE BUILDING, 1-5/8 MILES, S 39 DEG 53 MIN W.  CHIMNEY IN
 HV6419'MIDDLE OF HOUSE, 1-1/2 MILES, S 53 DEG 42 MIN W.  NEAR PEAK OF
 HV6419'HOUSE, 5/8 MILE, N 76 DEG 28 MIN W.  CHIMNEY ON OUTSIDE OF RIGHT
 HV6419'END OF HOUSE, 1-3/8 MILES, N 21 DEG 30 MIN W.  BETWEEN
 HV6419'TWO CHIMNEYS OF HOUSE NEARLY IN LINE, 1-1/4 MILES, N 14 DEG 29 MIN W.
 HV6419'NEAR PEAK OF HOUSE, 1 MILE, N 00 DEG 09 MIN E.
 HV6419'RIGHT CHIMNEY OF HOUSE, 2-1/8 MILES, S 02 DEG 10 MIN E.
 HV6419
 HV6419                          STATION RECOVERY (1942)
 HV6419
 HV6419'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6419'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HV6419'
 HV6419'(1) 25 YARDS SE OF A MEAN HIGH-WATER LINE, NOT 45 YARDS SE OF
 HV6419'SHORE.
 HV6419'
 HV6419'(2) 24 YARDS W OF A MEAN HIGH-WATER LINE, NOT 50 YARDS W OF SHORE.
 HV6419'
 HV6419'THE STATION IS LOCATED ON THE WESTERN SHORE OF FISHING BAY
 HV6419'ABOUT 0.25 MILE NE OF THE ENTRANCE TO TEDIOUS CREEK IN THE
 HV6419'MARSH, ABOUT 1 FOOT ABOVE HIGH-WATER LINE, 25 YARDS SE OF MEAN
 HV6419'HIGH-WATER LINE, 24 YARDS W OF A MEAN HIGH-WATER LINE, 60 YARDS
 HV6419'NE OF A MEAN HIGH-WATER LINE, AND ABOUT 150 YARDS N OF A SMALL
 HV6419'MARSH ISLAND THAT IS COVERED WITH WATER BUSHES.
 HV6419'
 HV6419'THE STATION MARK IS THE CENTER OF A STANDARD 8-INCH SQUARE
 HV6419'MARYLAND SHELL FISH SURVEY MONUMENT, WITH A 3/4-INCH HOLE IN THE
 HV6419'CENTER OF THE TOP WHICH IS 6 INCHES ABOVE GROUND.  THE LETTERS
 HV6419'M.S.F.S. AND U.S.C.S. ARE COUNTERSUNK IN THE TOP AND THE MARK IS
 HV6419'IN GOOD CONDITION.
 HV6419
 HV6419                          STATION RECOVERY (1950)
 HV6419
 HV6419'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HV6419'STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION
 HV6419'AS AMENDED BY W.D.P. IN 1942 IS ADEQUATE.  IT TOOK FOUR MEN ONE-HALF
 HV6419'DAY TO FIND THE STATION, AS THE VICINITY IS DENSELY COVERED WITH
 HV6419'UNDERBRUSH.
 HV6419'
 HV6419'THE LAST EIGHT LINES IN THE ORIGINAL DESCRIPTION BY C.C.Y. SHOULD
 HV6419'BE DELETED AS THE HOUSES AND CHIMNEYS REFERENCED TO COULD NOT BE
 HV6419'IDENTIFIED.
 HV6419
 HV6419                          STATION RECOVERY (1961)
 HV6419
 HV6419'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6419'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE STATION IS
 HV6419'EXTREMELY DIFFICULT TO FIND AND BECAUSE THE SHORELINE IS ERODING
 HV6419'BADLY, SHORELINE REFERENCES WOULD BE OF LITTLE OR NO USE FOR
 HV6419'FURTHER RECOVERY.  A 4 IN. PINE FISH STAKE 15 FT. LONG WAS LEFT
 HV6419'STANDING BESIDE THE STATION ALONG WITH A COPPERWELD STAKE
 HV6419'PROJECTING 18 INCHES.
 HV6419
 HV6419                          STATION RECOVERY (1965)
 HV6419
 HV6419'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HV6419'STATION WAS RECOVERED IN GOOD CONDITION.
 HV6419'
 HV6419'DESCRIPTION SHOULD BE CHANGED AS FOLLOWS--COPPERWELD STAKE AND 4
 HV6419'INCH PINE FISH STAKE HAVE BEEN DESTROYED AND ARE NO LONGER AT
 HV6419'STATION.  A NEW POLE (3 INCH), 15 FEET TALL WITH PLASTIC FLAGGING
 HV6419'IS STANDING BESIDE STATION, WHICH IS ON INSHORE SIDE OF WATER
 HV6419'BUSHES AT EDGE OF LOW MARSH GRASS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7516 ***********************************************************************
 HV7516  DESIGNATION -  CROOM
 HV7516  PID         -  HV7516
 HV7516  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7516  COUNTRY     -  US
 HV7516  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7516
 HV7516                         *CURRENT SURVEY CONTROL
 HV7516  ______________________________________________________________________
 HV7516* NAD 83(1993) POSITION- 38 45 10.26440(N) 076 45 51.23926(W)   ADJUSTED
 HV7516* NAVD 88 ORTHO HEIGHT -    74.7   (meters)      245.    (feet) VERTCON3
 HV7516  ______________________________________________________________________
 HV7516  GEOID HEIGHT    -        -33.017 (meters)                     GEOID18
 HV7516  LAPLACE CORR    -         -5.86  (seconds)                    DEFLEC18
 HV7516  HORZ ORDER      -  FIRST
 HV7516
 HV7516.The horizontal coordinates were established by classical geodetic methods
 HV7516.and adjusted by the National Geodetic Survey in November 1994.
 HV7516
 HV7516.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7516.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7516
 HV7516.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7516.GEOID18 height accuracy estimate available here.
 HV7516
 HV7516.Click photographs - Photos may exist for this station.
 HV7516
 HV7516.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7516
 HV7516. The following values were computed from the NAD 83(1993) position.
 HV7516
 HV7516;                    North         East     Units Scale Factor Converg.
 HV7516;SPC MD       -   120,597.269   420,493.493   MT  0.99995214   +0 08 52.7
 HV7516;SPC MD       -   395,659.54  1,379,569.07   sFT  0.99995214   +0 08 52.7
 HV7516;UTM  18      - 4,290,828.478   346,696.627   MT  0.99988941   -1 06 16.4
 HV7516
 HV7516!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7516!SPC MD       -   0.99999347  x   0.99995214  =   0.99994561
 HV7516!UTM  18      -   0.99999347  x   0.99988941  =   0.99988288
 HV7516
 HV7516:                Primary Azimuth Mark                     Grid Az
 HV7516:SPC MD       -  CROOM AZ MK                              014 58 16.1
 HV7516:UTM  18      -  CROOM AZ MK                              016 13 25.2
 HV7516
 HV7516_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4669690828(NAD 83)
 HV7516
 HV7516|---------------------------------------------------------------------|
 HV7516| PID    Reference Object                     Distance      Geod. Az  |
 HV7516|                                                           dddmmss.s |
 HV7516| HV7519 CROOM AZ MK                         APPROX. 0.5 KM 0150708.8 |
 HV7516| CX2662 CROOM RM 1                           23.029 METERS 16801     |
 HV7516| HV7422 WALDORF ATT MICROWAVE               APPROX.20.8 KM 2204521.7 |
 HV7516| HV7395 BRANDYWINE STATE FOREST LOT         APPROX. 9.1 KM 2271447.1 |
 HV7516| HV7383 CHELTENHAM REFORM SCH S TANK        APPROX. 6.7 KM 2545457.1 |
 HV7516| HV7390 CHELTENHAM NAVAL RAD STA E TK       APPROX. 7.8 KM 2674011.7 |
 HV7516| HV7389 CHELTENHAM NAVAL RAD STA W TK       APPROX. 8.0 KM 2675000.6 |
 HV7516| HV7506 CHELTENHAM NAVAL RAD TWR            APPROX. 8.1 KM 2692151.6 |
 HV7516| CX2663 CROOM RM 2                           20.543 METERS 27657     |
 HV7516| HV7593 ANDREWS AFB OLD CONTROL TOWER       APPROX.11.4 KM 3004031.2 |
 HV7516| HV7617 SUITLAND US ARMY RELAY TOWER        APPROX.18.1 KM 3041705.7 |
 HV7516|---------------------------------------------------------------------|
 HV7516
 HV7516                          SUPERSEDED SURVEY CONTROL
 HV7516
 HV7516  NAD 83(1991)-  38 45 10.26419(N)    076 45 51.23942(W) AD(       ) 1
 HV7516  NAD 83(1986)-  38 45 10.26149(N)    076 45 51.25353(W) AD(       ) 1
 HV7516  NAD 27      -  38 45 09.84686(N)    076 45 52.36586(W) AD(       ) 1
 HV7516  NGVD 29 (07/19/86)   74.9    (m)          246.     (f) VERT ANG       
 HV7516
 HV7516.Superseded values are not recommended for survey control.
 HV7516
 HV7516.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7516.See file dsdata.pdf to determine how the superseded data were derived.
 HV7516
 HV7516_MARKER: DS = TRIANGULATION STATION DISK
 HV7516_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7516_STAMPING: CROOM 1957
 HV7516_MARK LOGO: CGS
 HV7516_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7516+STABILITY: SURFACE MOTION
 HV7516
 HV7516  HISTORY     - Date     Condition        Report By
 HV7516  HISTORY     - 1957     MONUMENTED       CGS
 HV7516  HISTORY     - 1970     GOOD             NGS
 HV7516
 HV7516                          STATION DESCRIPTION
 HV7516
 HV7516'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV7516'STATION IS LOCATED ON A HIGH WOODED HILL IN THE COMMUNITY OF CROOM,
 HV7516'ABOUT 17.0 MILES SOUTHEAST OF THE CENTER OF WASHINGTON D.C., ABOUT
 HV7516'4-1/2 MILES SOUTH OF UPPER MARLBORO, ABOUT 2-1/2 MILES EAST OF U.S.
 HV7516'HIGHWAY NO. 301 AND ABOUT 0.2 MILE SOUTH OF STORE IN THE VILLAGE
 HV7516'OF CROOM.  STATION IS 31 FEET SOUTH-SOUTHWEST OF TRIANGLE BLAZED
 HV7516'TREE, 32 FEET EAST-SOUTHEAST OF APPROXIMATE CENTERLINE OF WOODS
 HV7516'ROAD AND 4-1/2 FEET EAST-NORTHEAST OF WITNESS POST.  THE MARK
 HV7516'PROJECTS 6 INCHES AND THE DISK IS STAMPED CROOM 1957.
 HV7516'
 HV7516'REFERENCE MARK NO. 1 IS 45 FEET NORTHWEST OF TRACK ROAD, 38 FEET
 HV7516'SOUTHEAST OF APPROXIMATE CENTERLINE OF WOODS ROAD AND 5 FEET
 HV7516'NORTH-NORTHEAST OF 14 INCH OAK TREE.  THE MARK PROJECTS 6 INCHES
 HV7516'AND AND THE DISK IS STAMPED CROOM NO 1 1957.
 HV7516'
 HV7516'REFERENCE MARK NO. 2 IS 36-1/2 FEET WEST-SOUTHWEST OF APPROXIMATE
 HV7516'CENTERLINE OF ROAD, 39-1/2 FEET NORTHWEST OF TRIANGLE BLAZED TREE
 HV7516'AND 5 FEET NORTH OF OAK TREE.  THE MARK PROJECTS 5 INCHES AND THE
 HV7516'DISK IS STAMPED CROOM NO 2 1957.
 HV7516'
 HV7516'AZIMUTH MARK IS 25-1/2 FEET NORTH-NORTHWEST OF APPROXIMATE
 HV7516'CENTERLINE OF HIGHWAY, 10 FEET SOUTHWEST OF DRIVEWAY, 2-1/2 FEET
 HV7516'NORTH-NORTHWEST OF WITNESS POST AND 1 FOOT NORTH-NORTHEAST OF
 HV7516'FENCE.  THE MARK PROJECTS 3 INCHES AND THE DISK IS STAMPED CROOM
 HV7516'1957.
 HV7516'
 HV7516'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 301 AND STATE
 HV7516'HIGHWAY NO. 4 IN THE EAST EDGE OF UPPER MARLBORO, GO SOUTH ON U.S.
 HV7516'HIGHWAY NO. 301 FOR 4.5 MILES TO JUNCTION OF STATE HIGHWAY NO. 382.
 HV7516'TURN LEFT AND GO EASTERLY ON STATE HIGHWAY NO. 382 FOR 1.5 MILES
 HV7516'TO SIDE ROAD LEFT JUST AFTER CROSSING RAILROAD TRACKS.  CONTINUE
 HV7516'EASTERLY ON STATE HIGHWAY NO. 382 FOR 0.8 MILE TO FORKS.  TAKE
 HV7516'RIGHT FORK AND GO 0.2 MILE TO SIDE ROAD LEFT.  CONTINUE SOUTHERLY
 HV7516'ON STATE HIGHWAY NO. 382 FOR 0.9 MILE TO AZIMUTH MARK ON LEFT
 HV7516'(EAST) SIDE OF ROAD.  CONTINUE SOUTHERLY FOR 0.3 MILE TO WOODS
 HV7516'ROAD RIGHT.  TURN RIGHT AND GO WESTERLY ON WOODS ROAD FOR ABOUT
 HV7516'100 YARDS TO TRIANGLE BLAZED TREE ON RIGHT AND STATION ON LEFT
 HV7516'(SOUTH) SIDE OF ROAD AS DESCRIBED.
 HV7516'
 HV7516'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV7516
 HV7516                          STATION RECOVERY (1970)
 HV7516
 HV7516'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7516'THE STATION MARK, REFERENCE MARKS 1, 2 AND THE AZIMUTH MARK WERE
 HV7516'RECOVERED IN GOOD CONDITION.  A DIFFERENCE IN THE DISTANCE TO THE
 HV7516'REFERENCE MARKS WAS NOTED.  DUE TO ROAD CHANGES A COMPLETE
 HV7516'DESCRIPTION FOLLOWS.
 HV7516'
 HV7516'THE STATION IS ABOUT 4-1/2 MILES SOUTH OF UPPER MARLBORO, 3-1/2 MILE
 HV7516'WEST OF THE PRINCE GEORGES-ANNE ARUNDEL COUNTY LINE, ON A WOODED
 HV7516'HILL AND ON PROPERTY OWNED BY PETER W. DUVALL, WHOSE ADDRESS IS
 HV7516'RURAL FREE DELIVERY, UPPER MARLBORO, MARYLAND.
 HV7516'
 HV7516'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND STATE
 HV7516'HIGHWAY 408 IN THE EAST EDGE OF UPPER MARLBORO, GO SOUTH ON U.S.
 HV7516'HIGHWAY 301 FOR 4.5 MILES TO THE JUNCTION WITH STATE HIGHWAY 382.
 HV7516'TURN LEFT AND GO EAST ON HIGHWAY 382 FOR 0.65 MILE TO A SCHOOL
 HV7516'HOUSE ON THE LEFT.  CONTINUE EASTERLY ON THE HIGHWAY FOR 1.75 MILES
 HV7516'TO A FORK.  TAKE THE RIGHT FORK AND GO SOUTHEASTERLY ON HIGHWAY
 HV7516'382 FOR 1.05 MILES TO THE AZIMUTH MARK ON THE LEFT JUST AFTER
 HV7516'GOING THROUGH THE SETTLEMENT OF CROOM.  CONTINUE SOUTHEASTERLY ON
 HV7516'THE HIGHWAY FOR 0.35 MILE TO THE JUNCTION WITH DULEY STATION ROAD.
 HV7516'TURN RIGHT AND GO SOUTH ON DULEY STATION ROAD FOR 0.05 MILE TO THE
 HV7516'END OF A CUTBANK AND A DIM TRACK ROAD LEADING INTO WOODS.  TURN
 HV7516'RIGHT AND GO WEST ON DIM TRACK ROAD LEADING INTO WOODS.  TURN
 HV7516'RIGHT AND GO WEST ON DIM TRACK ROAD FOR ABOUT 100 FEET TO
 HV7516'THE STATION ON THE RIGHT.
 HV7516'
 HV7516'STATION MARK IS A STANDARD DISK, STAMPED CROOM 1957, SET IN THE TOP
 HV7516'OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 3 INCHES ABOVE THE
 HV7516'GROUND.  IT IS 140.0 FEET SOUTH OF THE NORTH END OF THE TRACK ROAD,
 HV7516'83.0 FEET WEST OF THE CENTERLINE OF STATE HIGHWAY 382, 32.7 FEET
 HV7516'EAST OF THE CENTERLINE OF THE TRACK ROAD AND 5.0 FEET NORTHWEST OF A
 HV7516'WITNESS POST.
 HV7516'
 HV7516'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CROOM NO 1 1957, SET IN
 HV7516'THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 3 INCHES
 HV7516'ABOVE THE GROUND.  IT IS NORTH OF THE CENTERLINE OF DULEY STATION
 HV7516'ROAD, 37.0 FEET NORTH OF THE CENTERLINE OF THE JUNCTION OF DULEY
 HV7516'STATION ROAD AND THE TRACK ROAD AND ABOUT 2 FEET LOWER THAN THE
 HV7516'STATION.
 HV7516'
 HV7516'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CROOM NO 2 1957, SET IN
 HV7516'THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 2 INCHES
 HV7516'ABOVE THE GROUND.  IT IS 64.0 FEET WEST OF THE WITNESS POST,
 HV7516'35.0 FEET WEST OF THE CENTERLINE OF THE TRACK ROAD AND ABOUT 3
 HV7516'FEET LOWER THAN THE STATION.
 HV7516'
 HV7516'AZIMUTH MARK IS A STANDARD DISK, STAMPED CROOM 1957, SET IN THE TOP
 HV7516'OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 3 INCHES ABOVE THE
 HV7516'GROUND.  IT IS 47.0 FEET NORTH OF POWER LINE POLE NUMBER C 77, 24.3
 HV7516'FEET EAST OF THE CENTERLINE OF STATE HIGHWAY 382 AND 11.2 FEET
 HV7516'WEST OF POWER LINE POLE NUMBER 838827.
 HV7516'
 HV7516'REFERENCE MARK 1 TO REFENCE MARK 2 OBSTRUCTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7519 ***********************************************************************
 HV7519  DESIGNATION -  CROOM AZ MK
 HV7519  PID         -  HV7519
 HV7519  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7519  COUNTRY     -  US
 HV7519  USGS QUAD   -  UPPER MARLBORO (2016)
 HV7519
 HV7519                         *CURRENT SURVEY CONTROL
 HV7519  ______________________________________________________________________
 HV7519* NAD 83(1993) POSITION- 38 45 27.23904(N) 076 45 45.38204(W)   ADJUSTED
 HV7519* NAVD 88 ORTHO HEIGHT -    66.1   (meters)      217.    (feet) VERTCON3
 HV7519  ______________________________________________________________________
 HV7519  GEOID HEIGHT    -        -33.011 (meters)                     GEOID18
 HV7519  LAPLACE CORR    -         -5.84  (seconds)                    DEFLEC18
 HV7519  HORZ ORDER      -  SECOND
 HV7519
 HV7519.The horizontal coordinates were established by classical geodetic methods
 HV7519.and adjusted by the National Geodetic Survey in November 1994.
 HV7519
 HV7519.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7519.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7519
 HV7519.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7519.GEOID18 height accuracy estimate available here.
 HV7519
 HV7519.Click photographs - Photos may exist for this station.
 HV7519
 HV7519.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7519
 HV7519. The following values were computed from the NAD 83(1993) position.
 HV7519
 HV7519;                    North         East     Units Scale Factor Converg.
 HV7519;SPC MD       -   121,121.044   420,633.556   MT  0.99995197   +0 08 56.4
 HV7519;SPC MD       -   397,377.96  1,380,028.59   sFT  0.99995197   +0 08 56.4
 HV7519;UTM  18      - 4,291,349.034   346,848.096   MT  0.99988884   -1 06 13.1
 HV7519
 HV7519!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7519!SPC MD       -   0.99999482  x   0.99995197  =   0.99994679
 HV7519!UTM  18      -   0.99999482  x   0.99988884  =   0.99988366
 HV7519
 HV7519:                Primary Azimuth Mark                     Grid Az
 HV7519:SPC MD       -  CROOM                                    194 58 16.0
 HV7519:UTM  18      -  CROOM                                    196 13 25.5
 HV7519
 HV7519_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4684891349(NAD 83)
 HV7519
 HV7519|---------------------------------------------------------------------|
 HV7519| PID    Reference Object                     Distance      Geod. Az  |
 HV7519|                                                           dddmmss.s |
 HV7519| HV7516 CROOM                               APPROX. 0.5 KM 1950712.4 |
 HV7519| HV7521 17499 WSSC 1970                     148.802 METERS 21555     |
 HV7519|---------------------------------------------------------------------|
 HV7519
 HV7519                          SUPERSEDED SURVEY CONTROL
 HV7519
 HV7519  NAD 83(1991)-  38 45 27.23882(N)    076 45 45.38220(W) AD(       ) 2
 HV7519  NAD 83(1986)-  38 45 27.23611(N)    076 45 45.39625(W) AD(       ) 2
 HV7519  NAD 27      -  38 45 26.82170(N)    076 45 46.50859(W) AD(       ) 2
 HV7519  NGVD 29 (07/19/86)   66.3    (m)          218.     (f) VERT ANG       
 HV7519
 HV7519.Superseded values are not recommended for survey control.
 HV7519
 HV7519.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7519.See file dsdata.pdf to determine how the superseded data were derived.
 HV7519
 HV7519_MARKER: DZ = AZIMUTH MARK DISK
 HV7519_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7519_STAMPING: CROOM 1957
 HV7519_MARK LOGO: CGS
 HV7519_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7519+STABILITY: SURFACE MOTION
 HV7519
 HV7519  HISTORY     - Date     Condition        Report By
 HV7519  HISTORY     - 1969     MONUMENTED       WSSC
 HV7519
 HV7519                          STATION DESCRIPTION
 HV7519
 HV7519'DESCRIBED BY WASH SUBURB SAN COMM 1969
 HV7519'THE STATION IS LOCATED ABOUT .40 MILES NORTH OF CROOM ON THE EAST
 HV7519'SIDE OF ROUTE 382 (CROOM ROAD).
 HV7519'
 HV7519'TO REACH THE STATION FROM THE INTERSECTION OF DULEY STATION ROAD
 HV7519'AND ROUTE 382, GO NORTH ON ROUTE 382 FOR .40 MILES TO THE STATION
 HV7519'ON THE RIGHT.
 HV7519'
 HV7519'THE STATION MARK IS A CONCRETE MONUMENT WITH A DISK MARKED CROOM
 HV7519'AZIMUTH 1957 AND IS SET FLUSH WITH THE SURFACE.  IT IS 86.98 FEET
 HV7519'SOUTH OF C AND P POLE NO. 76, 11.13 FEET WEST OF PEPCO POLE
 HV7519'NO. 838827, 45.92 FEET NORTH OF C AND P POLE NO. 77 AND 65.08 FEET
 HV7519'NORTHEAST OF C AND P GS POLE NO. 77.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0595 ***********************************************************************
 HV0595  DESIGNATION -  CROSS
 HV0595  PID         -  HV0595
 HV0595  STATE/COUNTY-  MD/ST MARYS
 HV0595  COUNTRY     -  US
 HV0595  USGS QUAD   -  PINEY POINT (2016)
 HV0595
 HV0595                         *CURRENT SURVEY CONTROL
 HV0595  ______________________________________________________________________
 HV0595* NAD 83(1986) POSITION- 38 08 10.     (N) 076 31 46.     (W)   SCALED
 HV0595* NAVD 88 ORTHO HEIGHT -     0.572 (meters)        1.88  (feet) ADJUSTED
 HV0595  ______________________________________________________________________
 HV0595  GEOID HEIGHT    -        -34.526 (meters)                     GEOID18
 HV0595  DYNAMIC HEIGHT  -          0.572 (meters)        1.88  (feet) COMP
 HV0595  MODELED GRAVITY -    979,996.1   (mgal)                       NAVD 88
 HV0595
 HV0595  VERT ORDER      -  FIRST     CLASS II
 HV0595
 HV0595.The horizontal coordinates were scaled from a map and have
 HV0595.an estimated accuracy of +/- 6 seconds.
 HV0595
 HV0595.The orthometric height was determined by differential leveling and
 HV0595.adjusted by the NATIONAL GEODETIC SURVEY
 HV0595.in June 1991.
 HV0595
 HV0595.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0595.GEOID18 height accuracy estimate available here.
 HV0595
 HV0595.Click photographs - Photos may exist for this station.
 HV0595
 HV0595.The dynamic height is computed by dividing the NAVD 88
 HV0595.geopotential number by the normal gravity value computed on the
 HV0595.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0595.degrees latitude (g = 980.6199 gals.).
 HV0595
 HV0595.The modeled gravity was interpolated from observed gravity values.
 HV0595
 HV0595;                    North         East    Units  Estimated Accuracy
 HV0595;SPC MD       -    52,220.      441,260.      MT  (+/- 180 meters Scaled)
 HV0595
 HV0595_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH659220(NAD 83)
 HV0595
 HV0595                          SUPERSEDED SURVEY CONTROL
 HV0595
 HV0595  NGVD 29 (11/26/84)    0.818  (m)            2.68   (f) ADJUSTED    1 2
 HV0595
 HV0595.Superseded values are not recommended for survey control.
 HV0595
 HV0595.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0595.See file dsdata.pdf to determine how the superseded data were derived.
 HV0595
 HV0595_MARKER: X = CHISELED CROSS
 HV0595_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0595_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0595+STABILITY: SURFACE MOTION
 HV0595_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0595+SATELLITE: SATELLITE OBSERVATIONS - March 26, 2005
 HV0595
 HV0595  HISTORY     - Date     Condition        Report By
 HV0595  HISTORY     - UNK      MONUMENTED       NONE
 HV0595  HISTORY     - 1971     GOOD             NGS
 HV0595  HISTORY     - 19990130 GOOD             USPSQD
 HV0595  HISTORY     - 20050326 GOOD             USPSQD
 HV0595
 HV0595                          STATION DESCRIPTION
 HV0595
 HV0595'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0595'1.4 MI SW FROM PINEY POINT.
 HV0595'ABOUT 1.45 MILES SOUTHWEST ALONG STATE HIGHWAY 498 AND LIGHTHOUSE
 HV0595'ROAD FROM THE JUNCTION OF STATE HIGHWAY 249 AT PINEY POINT, AT
 HV0595'AN ENTRANCE TO A U.S. COAST GUARD STATION, 18 FEET NORTHWEST
 HV0595'OF THE CENTER LINE OF THE ROAD, 59.5 FEET NORTH OF THE NORTH
 HV0595'CORNER OF THE U.S. COAST GUARD COMMAND BLDG, 1 1/2 FEET NORTHEAST
 HV0595'OF A FENCE, A 2-INCH CROSS ON THE TOP OF A 6-INCH SQUARE GRANITE
 HV0595'POST WHICH PROJECTS 4 INCHES ABOVE THE LEVEL OF THE GROUND.
 HV0595
 HV0595                          STATION RECOVERY (1999)
 HV0595
 HV0595'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV0595'RECOVERED IN GOOD CONDITION.
 HV0595
 HV0595                          STATION RECOVERY (2005)
 HV0595
 HV0595'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPF)
 HV0595'HV0595
 HV0595'
 HV0595'DESCRIPTION HAS BEEN MODIFIED TO REFLECT THE COAST GUARD STATION IS
 HV0595'NOW A STATE PARK, THE REFERENCED FENCE IS NO LONGER VISIBLE, AND TO
 HV0595'BETTER REFLECT THE REFERENCE POINTS AND DISTANCES.
 HV0595'
 HV0595'STATION IS LOCATED AT PINEY POINT LIGHTHOUSE STATE PARK.  TO REACH THE
 HV0595'STATION, TRAVEL 7.2 MI (11.4 KM) SOUTH ON STATE HIGHWAY 249 FROM THE
 HV0595'INTERSECTION OF STATE HIGHWAYS 5 AND 249 IN CALLAWAY, MD.
 HV0595'AT THE INTERSECTION OF STATE HIGHWAY 249 AND ROUTES 498 (LIGHTHOUSE
 HV0595'ROAD) GO SOUTH ON ROUTE 498 FOR 1.35 MI (2.17 KM) TO THE END OF THE
 HV0595'ROAD TO THE PINEY POINT LIGHTHOUSE STATE PARK.  STATION IS AT THE
 HV0595'ENTRANCE OF PINEY POINT LIGHTHOUSE STATE PARK (A FORMER U.S. COAST
 HV0595'GUARD STATION)
 HV0595'
 HV0595'STATION MARK IS 18 FT (5.5M) NORTHWEST OF THE CENTER LINE OF THE ROAD,
 HV0595'59.5 FT (18.M) NORTH OF THE NORTH CORNER OF THE FORMER U.S. COAST
 HV0595'GUARD COMMAND BLDG, 25 FT (7.6 M) EAST OF A 90 DEGREE FENCE CORNER
 HV0595'POST THAT MARKS THE ENTRANCE TO A PETROLEUM COMPANY, AND 27 FT (8.2 M)
 HV0595'WEST OF A TELEPHONE SUBSTATION LOCATED BETWEEN TWO UTILITY POLES.
 HV0595'STATION IS A 2-INCH CROSS ON THE TOP OF A 6-INCH SQUARE GRANITE POST
 HV0595'WHICH LIES 1 INCH BELOW THE LEVEL OF THE GROUND.
 HV0595'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6027 ***********************************************************************
 JV6027  DESIGNATION -  CROSS
 JV6027  PID         -  JV6027
 JV6027  STATE/COUNTY-  MD/BALTIMORE
 JV6027  COUNTRY     -  US
 JV6027  USGS QUAD   -  REISTERSTOWN (2016)
 JV6027
 JV6027                         *CURRENT SURVEY CONTROL
 JV6027  ______________________________________________________________________
 JV6027* NAD 83(1991) POSITION- 39 25 00.34321(N) 076 50 24.70840(W)   ADJUSTED
 JV6027* NAVD 88 ORTHO HEIGHT -   216.    (meters)      709.    (feet) SCALED
 JV6027  ______________________________________________________________________
 JV6027  GEOID HEIGHT    -        -32.076 (meters)                     GEOID18
 JV6027  LAPLACE CORR    -         -2.04  (seconds)                    DEFLEC18
 JV6027  HORZ ORDER      -  FIRST
 JV6027
 JV6027.The horizontal coordinates were established by classical geodetic methods
 JV6027.and adjusted by the National Geodetic Survey in January 1992.
 JV6027
 JV6027.The orthometric height was scaled from a topographic map.
 JV6027
 JV6027.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6027.GEOID18 height accuracy estimate available here.
 JV6027
 JV6027.Click photographs - Photos may exist for this station.
 JV6027
 JV6027.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6027
 JV6027. The following values were computed from the NAD 83(1991) position.
 JV6027
 JV6027;                    North         East     Units Scale Factor Converg.
 JV6027;SPC MD       -   194,285.505   413,761.517   MT  0.99999435   +0 06 01.1
 JV6027;SPC MD       -   637,418.36  1,357,482.58   sFT  0.99999435   +0 06 01.1
 JV6027;UTM  18      - 4,364,642.343   341,587.806   MT  0.99990898   -1 10 07.3
 JV6027
 JV6027!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6027!SPC MD       -   0.99997118  x   0.99999435  =   0.99996553
 JV6027!UTM  18      -   0.99997118  x   0.99990898  =   0.99988016
 JV6027
 JV6027:                Primary Azimuth Mark                     Grid Az
 JV6027:SPC MD       -  BLACK                                    146 54 09.4
 JV6027:UTM  18      -  BLACK                                    148 10 17.8
 JV6027
 JV6027_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4158764642(NAD 83)
 JV6027
 JV6027|---------------------------------------------------------------------|
 JV6027| PID    Reference Object                     Distance      Geod. Az  |
 JV6027|                                                           dddmmss.s |
 JV6027| JV6026 REISTERSTOWN METRO WATER TANK       APPROX. 6.4 KM 0091357.8 |
 JV6027| JV6033 PLEASANT HILL METRO WATER TANK      APPROX. 4.5 KM 0715758.7 |
 JV6027| JV5658 WCAO SOUTH RADIO MAST               APPROX.11.0 KM 1080212.5 |
 JV6027| JV6041 MT WILSON SANITORIUM TANK           APPROX. 7.5 KM 1194556.4 |
 JV6027| JV5641 MT HOPE CUPOLA                      APPROX.13.6 KM 1230940.4 |
 JV6027| JV6037 WBAL WEST RADIO MAST                APPROX. 7.3 KM 1281159.8 |
 JV6027| JV6044 BLACK                               APPROX. 6.2 KM 1470010.5 |
 JV6027| JV6029 RANDALLSTOWN POLICE RADIO MAST      APPROX. 3.8 KM 1624725.4 |
 JV6027| CB1118 CROSS RM 1                           44.897 METERS 23138     |
 JV6027| CB1119 CROSS RM 2                          138.224 METERS 28651     |
 JV6027| CB1120 CROSS RM 3                           40.630 METERS 31348     |
 JV6027|---------------------------------------------------------------------|
 JV6027
 JV6027                          SUPERSEDED SURVEY CONTROL
 JV6027
 JV6027  NAD 83(1986)-  39 25 00.34106(N)    076 50 24.71567(W) AD(       ) 1
 JV6027  NAD 27      -  39 24 59.96400(N)    076 50 25.79000(W) AD(       ) 1
 JV6027
 JV6027.Superseded values are not recommended for survey control.
 JV6027
 JV6027.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6027.See file dsdata.pdf to determine how the superseded data were derived.
 JV6027
 JV6027_MARKER: DS = TRIANGULATION STATION DISK
 JV6027_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6027_STAMPING: CROSS 1933
 JV6027_MARK LOGO: CGS
 JV6027_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6027+STABILITY: SURFACE MOTION
 JV6027
 JV6027  HISTORY     - Date     Condition        Report By
 JV6027  HISTORY     - 1933     MONUMENTED       CGS
 JV6027  HISTORY     - 1938     GOOD             CGS
 JV6027  HISTORY     - 1940     GOOD             CGS
 JV6027  HISTORY     - 1943     GOOD             CGS
 JV6027  HISTORY     - 1958     GOOD             LOCENG
 JV6027  HISTORY     - 19950713 GOOD             USPSQD
 JV6027
 JV6027                          STATION DESCRIPTION
 JV6027
 JV6027'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV6027'THE STATION IS ABOUT 20 PACES W OF THE TOP OF HILL LOCALLY
 JV6027'KNOWN AS CROSS HILL, WHICH IS APPARENTLY THE HIGHEST HILL IN
 JV6027'IMMEDIATE VICINITY.
 JV6027'
 JV6027'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE BRONZE DISKS SET
 JV6027'IN CONCRETE.
 JV6027'
 JV6027'REFERENCE MARK NO.1 IS ON THE W SIDE OF HILLTOP JUST E OF FIRST
 JV6027'CHANGE IN DOWNHILL SLOPE GRADIENT.
 JV6027'
 JV6027'REFERENCE MARK NO.2 IS APPROXIMATELY 200 YARDS NW OF TOP OF HILL
 JV6027'IN THE RIGHT-OF-WAY OF ELECTRICITY TRANSMISSION LINE AND ABOUT
 JV6027'50 YARDS SW OF ONE OF THE STEEL TOWERS.
 JV6027'
 JV6027'REFERENCE MARK NO.3 IS ON THE NNW SIDE OF HILLTOP NEAR THE FIRST
 JV6027'CHANGE IN THE DOWNHILL SLOPE GRADIENT.
 JV6027'
 JV6027'THE STATION MARK IS STAMPED CROSS 1933.
 JV6027'
 JV6027'ALL REFERENCE MARKS ARE STAMPED CROSS, NO., 1933.  ALL REFERENCE
 JV6027'MARKS ARE VISIBLE FROM THE GROUND.  SOME OTHER OBJECTS MAY BE
 JV6027'VISIBLE FROM THE GROUND BUT IT COULD NOT BE DEFINITELY DETERMINED
 JV6027'BECAUSE THE HILL IS WOOD COVERED, BUT NOT TOO MUCH TO BE CLEARED
 JV6027'IF NEEDED.
 JV6027'
 JV6027'TO REACH FROM CENTER OF TOWN OF REISTERSTOWN, MARYLAND, TAKE
 JV6027'U.S. ROUTE 140 WHICH IS ALSO CALLED REISTERSTOWN ROAD AND SO
 JV6027'SIGN-DESIGNATED.  GO 0.7 MILE SE OR TOWARDS BALTIMORE TO BERRYMANS
 JV6027'LANE AND TURN RIGHT OR W, THENCE WESTERLY 2.7 MILES TO DEER PARK
 JV6027'ROAD AND TURN LEFT OR S, THENCE SOUTHERLY 0.5 MILE TO TURN IN
 JV6027'MAIN ROAD AT FORK.  A DIM WOODS ROAD LIES STRAIGHT AHEAD BETWEEN
 JV6027'THE FORKS.  TAKE THIS DIM WOODS ROAD AND FOLLOW 0.2 MILE TO TOP
 JV6027'OF HILL.  TRUCKS MAY BE DRIVEN DIRECTLY TO THE STATION.
 JV6027'
 JV6027'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6027
 JV6027                          STATION RECOVERY (1938)
 JV6027
 JV6027'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV6027'THE STATION, AZIMUTH AND REFERENCE MARKS RECOVERED AS
 JV6027'NOTED.  ORIGINAL DESCRIPTION - GOOD.
 JV6027
 JV6027                          STATION RECOVERY (1940)
 JV6027
 JV6027'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (CFM)
 JV6027'THE DIRECTIONS FROM REISTERTOWN ARE EASILY FOLLOWED UP TO THE
 JV6027'POINT OF TAKING THE WOODS ROAD BETWEEN THE FORK WHICH IS NOW PRETTY
 JV6027'WELL WASHED IN PLACES AND GROWN OVER WITH SCRUBBY BRUSH.  AN
 JV6027'EASIER WAY TO FIND THE STATION NOW IS TO TAKE THE RIGHT FORK A
 JV6027'FEW HUNDRED FEET TO THE RIGHT-OF-WAY OF THE HIGH VOLTAGE
 JV6027'TRANSMISSION LINE.  ENTER A WINDING ROAD TO THE LEFT AND
 JV6027'REFERENCE MARK NO.2 WILL BE FOUND 75 YARDS S OF TOWER
 JV6027'NO.217, NUMBER STENCILED ON RIGHT HAND LEG LOOKING ALONG THE
 JV6027'AXIS RIGHT-OF-WAY.  GUIDED BY THE ARROW THE STATION IS EASILY
 JV6027'FOUND IN A GROVE OF SCRUB OAK.  THE TWO OTHER REFERENCE MARKS ALSO
 JV6027'ARE EASILY FOUND.  AT THE PRESENT TIME NOTHING IS VISIBLE
 JV6027'FROM THE GROUND, BUT AS SOON AS THE LEAVES FALL AT LEAST ONE
 JV6027'TRANSMISSION TOWER CAN BE SIGHTED ON, AND FROM THAT IT
 JV6027'WILL BE POSSIBLE TO EXTEND A CONTROL SURVEY OUT TO A POINT
 JV6027'FROM WHICH DISTANT OBJECTS MAY BE SEEN.  IT WOULD SEEM WISE,
 JV6027'HOWEVER, TO CHAIN ACCURATELY THE HORIZONTAL DISTANCE FROM
 JV6027'THE STATION TO REFERENCE MARK NO.2 BECAUSE SINCE THIS
 JV6027'MARKER IS ON THE RIGHT-OF-WAY IT IS ASSURED OF NOT
 JV6027'BECOMING OBSCURED BY BUSHES AND OTHER GROWTH.  THESE
 JV6027'RIGHTS-OF-WAY ARE ALWAYS KEPT CLEAR AND SO A FIXED POINT
 JV6027'THUS LOCATED WOULD ALWAY BE SERVICEABLE AND EASILY TAKEN OFF
 JV6027'FROM.
 JV6027
 JV6027                          STATION RECOVERY (1943)
 JV6027
 JV6027'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV6027'THE STATION AND ALL MARKS WERE RECOVERED AS DESCRIBED AND FOUND
 JV6027'IN GOOD CONDITION.  FOLLOWING IS A COMPLETE NEW DESCRIPTION--
 JV6027'
 JV6027'THE STATION IS LOCATED ABOUT 5 MILES NE OF ELDERSBURG, ABOUT
 JV6027'20 YARDS W OF THE TOP OF A TIMBERED HILL KNOWN LOCALLY AS CROSS
 JV6027'HILL, AND ABOUT 175 YARDS E OF A HIGHLINE.  IT PROJECTS ABOUT 4
 JV6027'INCHES AND THE DISK IS STAMPED CROSS 1933.
 JV6027'
 JV6027'REFERENCE MARK NO.1 IS NW OF THE STATION.  IT PROJECTS ABOUT 8
 JV6027'INCHES AND IS STAMPED CROSS 1933.
 JV6027'
 JV6027'REFERENCE MARK NO.2 IS LOCATED IN THE HIGHLINE RIGHT-OF-WAY,
 JV6027'ABOUT 200 YARDS WNW OF THE STATION, AND ABOUT 50 YARDS SW OF
 JV6027'STEEL HIGHLINE STRUCTURE NO.217.  IT PROJECTS ABOUT 6 INCHES AND
 JV6027'IS STAMPED CROSS 1933.
 JV6027'
 JV6027'REFERENCE MARK NO.3 IS NW OF THE STATION.  IT PROJECTS ABOUT 8
 JV6027'INCHES AND IS STAMPED CROSS NO.3.
 JV6027'
 JV6027'DUE TO LOCAL TIMBER NO OBJECTS WERE VISIBLE FROM THE
 JV6027'GROUND.  HOWEVER WITH CLEARING THE W HORN OF HIGHLINE STRUCTURE
 JV6027'NO.223 CAN BE USED.  STRUCTURE NO.223 IS THE SIXTH STRUCTURE S
 JV6027'OF REFERENCE MARK NO.2.
 JV6027'
 JV6027'TO REACH THE STATION FROM ELDERSBURG GO EASTERLY ON STATE
 JV6027'HIGHWAY 26 FOR 5 MILES TO A CROSS ROAD AT AN ESSO STATION ON THE
 JV6027'LEFT.  TURN LEFT ON A NARROW, SURFACED ROAD AND GO NORTHEASTERLY
 JV6027'FOR 2.3 MILES TO THE INTERSECTION WITH A WIDER SURFACED
 JV6027'ROAD.  TURN SHARP RIGHT ON A TRACK ROAD BUT BETWEEN THE TWO
 JV6027'HARD-SURFACED ROADS AND FOLLOW THE TRACK ROAD SOUTHERLY, KEEPING
 JV6027'TO THE RIGHT OF THE HIGHEST PART OF THE HILL, FOR 0.2 MILE TO
 JV6027'THE STATION.
 JV6027'
 JV6027'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT BLACK 1938, A
 JV6027'100-FOOT LIGHT AT SLACK, A 113-FOOT LIGHT AT ELDER, AN 87-FOOT
 JV6027'LIGHT AT BIRD, AND A 100-FOOT LIGHT AT HAMMOND 1933.
 JV6027
 JV6027                          STATION RECOVERY (1958)
 JV6027
 JV6027'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1958
 JV6027'RECOVERED BY MDBCS.
 JV6027'
 JV6027'ALL MARKS RECOVERED IN GOOD CONDITION.  REFERENCE MARK 1 IS
 JV6027'147.30 FT. FROM THE STATION.  REFERENCE MARKS 2 AND 3 ARE
 JV6027'OBSTRUCTED BY A HOUSE.
 JV6027
 JV6027                          STATION RECOVERY (1995)
 JV6027
 JV6027'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6027'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4757 ***********************************************************************
 AB4757  DESIGNATION -  CROSS AZ MK
 AB4757  PID         -  AB4757
 AB4757  STATE/COUNTY-  MD/CARROLL
 AB4757  COUNTRY     -  US
 AB4757  USGS QUAD   -  LITTLESTOWN (2019)
 AB4757
 AB4757                         *CURRENT SURVEY CONTROL
 AB4757  ______________________________________________________________________
 AB4757* NAD 83(2011) POSITION- 39 38 05.93838(N) 077 04 23.36096(W)   ADJUSTED
 AB4757* NAD 83(2011) ELLIP HT-   153.203 (meters)        (06/27/12)   ADJUSTED
 AB4757* NAD 83(2011) EPOCH   -  2010.00
 AB4757* NAVD 88 ORTHO HEIGHT -   185.8   (meters)      610.    (feet) GPS OBS
 AB4757  ______________________________________________________________________
 AB4757  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4757  GEOID HEIGHT    -        -32.621 (meters)                     GEOID99
 AB4757  GEOID HEIGHT    -        -32.616 (meters)                     GEOID18
 AB4757  NAD 83(2011) X  -  1,100,363.923 (meters)                     COMP
 AB4757  NAD 83(2011) Y  - -4,794,118.493 (meters)                     COMP
 AB4757  NAD 83(2011) Z  -  4,046,954.078 (meters)                     COMP
 AB4757  LAPLACE CORR    -          4.98  (seconds)                    DEFLEC18
 AB4757
 AB4757  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4757  Standards:
 AB4757         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4757            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4757  -------------------------------------------------------------------
 AB4757  NETWORK    0.89   3.59           0.38   0.35   1.83      0.00063430
 AB4757  -------------------------------------------------------------------
 AB4757  Click here for local accuracies and other accuracy information.
 AB4757
 AB4757.The horizontal coordinates were established by GPS observations
 AB4757.and adjusted by the National Geodetic Survey in June 2012.
 AB4757
 AB4757.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4757.been affixed to the stable North American tectonic plate. See 
 AB4757.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4757
 AB4757.The horizontal coordinates are valid at the epoch date displayed above
 AB4757.which is a decimal equivalence of Year/Month/Day.
 AB4757
 AB4757.The orthometric height was determined by GPS observations and a
 AB4757.high-resolution geoid model.
 AB4757
 AB4757.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4757.GEOID18 height accuracy estimate available here.
 AB4757
 AB4757.Click photographs - Photos may exist for this station.
 AB4757
 AB4757.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4757
 AB4757.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4757
 AB4757.The ellipsoidal height was determined by GPS observations
 AB4757.and is referenced to NAD 83.
 AB4757
 AB4757. The following values were computed from the NAD 83(2011) position.
 AB4757
 AB4757;                    North         East     Units Scale Factor Converg.
 AB4757;SPC MD       -   218,504.425   393,719.571   MT  1.00003760   -0 02 45.3
 AB4757;SPC MD       -   716,876.60  1,291,728.29   sFT  1.00003760   -0 02 45.3
 AB4757;UTM  18      - 4,389,298.847   322,090.073   MT  0.99998970   -1 19 22.1
 AB4757
 AB4757!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4757!SPC MD       -   0.99997597  x   1.00003760  =   1.00001356
 AB4757!UTM  18      -   0.99997597  x   0.99998970  =   0.99996567
 AB4757
 AB4757:                Primary Azimuth Mark                     Grid Az
 AB4757:SPC MD       -  CROSS RESET 1995                         315 19 33.9
 AB4757:UTM  18      -  CROSS RESET 1995                         316 36 10.7
 AB4757
 AB4757_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2209089298(NAD 83)
 AB4757
 AB4757|---------------------------------------------------------------------|
 AB4757| PID    Reference Object                     Distance      Geod. Az  |
 AB4757|                                                           dddmmss.s |
 AB4757| AB4756 CROSS RESET 1995                    APPROX. 0.9 KM 3151648.6 |
 AB4757|---------------------------------------------------------------------|
 AB4757
 AB4757                          SUPERSEDED SURVEY CONTROL
 AB4757
 AB4757  NAD 83(2007)-  39 38 05.93870(N)    077 04 23.36159(W) AD(2002.00) 0
 AB4757  ELLIP H (02/10/07)  153.221  (m)                       GP(2002.00)    
 AB4757  ELLIP H (08/30/02)  153.203  (m)                       GP(       ) 4 2
 AB4757  NAD 83(1991)-  39 38 05.93821(N)    077 04 23.36227(W) AD(       ) 1
 AB4757  ELLIP H (07/03/96)  153.143  (m)                       GP(       ) 1 1
 AB4757  NAVD 88 (07/03/96)  185.8    (m)  GEOID93  model used  GPS OBS        
 AB4757
 AB4757.Superseded values are not recommended for survey control.
 AB4757
 AB4757.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4757.See file dsdata.pdf to determine how the superseded data were derived.
 AB4757
 AB4757_MARKER: DD = SURVEY DISK
 AB4757_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4757_STAMPING: CROSS AZI 1995
 AB4757_MARK LOGO: MD-013
 AB4757_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4757_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4757+STABILITY: SURFACE MOTION
 AB4757_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4757+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4757
 AB4757  HISTORY     - Date     Condition        Report By
 AB4757  HISTORY     - 1995     MONUMENTED       MD-013
 AB4757
 AB4757                          STATION DESCRIPTION
 AB4757
 AB4757'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4757'STATION IS LOCATED ABOUT 6.5 MI (10.5 KM) NORTHWEST OF WESTMINSTER AND
 AB4757'ABOUT 5 MI (8.0 KM) EAST OF TANEYTOWN. TO REACH STATION FROM THE
 AB4757'INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 32 (MAIN
 AB4757'STREET) IN WESTMINSTER, GO WEST ON MD ROUTE 140 FOR 4.6 MI (7.4 KM) TO
 AB4757'THE INTERSECTION WITH TYRONE ROAD. TURN RIGHT ON TYRONE ROAD AND GO
 AB4757'NORTH FOR 1.8 MI (2.9 KM) TO THE INTERSECTION WITH CROSS SECTION ROAD
 AB4757'AND THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4757'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 19.0 FT
 AB4757'(5.8 M) NORTH OF THE CENTERLINE OF TYRONE ROAD, 25.0 FT (7.6 M)
 AB4757'SOUTHWEST OF AN EYE BOLT, 65.0 FT (19.8 M) EAST OF THE CENTERLINE OF A
 AB4757'DRIVEWAY LEADING NORTH TO HOUSE NO.2198, 37.0 FT (11.3 M) EAST OF A 4
 AB4757'IN LOCUST TREE, 89.0 FT (27.1 M) EAST OF POWER POLE NO.219416 AND 95.0
 AB4757'FT (29.0 M) NORTHEAST OF POWER POLE NO. 517082.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4756 ***********************************************************************
 AB4756  DESIGNATION -  CROSS RESET 1995
 AB4756  PID         -  AB4756
 AB4756  STATE/COUNTY-  MD/CARROLL
 AB4756  COUNTRY     -  US
 AB4756  USGS QUAD   -  LITTLESTOWN (2019)
 AB4756
 AB4756                         *CURRENT SURVEY CONTROL
 AB4756  ______________________________________________________________________
 AB4756* NAD 83(2011) POSITION- 39 38 26.58841(N) 077 04 49.81146(W)   ADJUSTED
 AB4756* NAD 83(2011) ELLIP HT-   149.880 (meters)        (06/27/12)   ADJUSTED
 AB4756* NAD 83(2011) EPOCH   -  2010.00
 AB4756* NAVD 88 ORTHO HEIGHT -   182.5   (meters)      599.    (feet) GPS OBS
 AB4756  ______________________________________________________________________
 AB4756  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4756  GEOID HEIGHT    -        -32.660 (meters)                     GEOID99
 AB4756  GEOID HEIGHT    -        -32.655 (meters)                     GEOID18
 AB4756  NAD 83(2011) X  -  1,099,657.726 (meters)                     COMP
 AB4756  NAD 83(2011) Y  - -4,793,861.062 (meters)                     COMP
 AB4756  NAD 83(2011) Z  -  4,047,442.417 (meters)                     COMP
 AB4756  LAPLACE CORR    -          4.98  (seconds)                    DEFLEC18
 AB4756
 AB4756  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4756  Standards:
 AB4756         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4756            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4756  -------------------------------------------------------------------
 AB4756  NETWORK    0.88   2.82           0.37   0.35   1.44     -0.01137379
 AB4756  -------------------------------------------------------------------
 AB4756  Click here for local accuracies and other accuracy information.
 AB4756
 AB4756.The horizontal coordinates were established by GPS observations
 AB4756.and adjusted by the National Geodetic Survey in June 2012.
 AB4756
 AB4756.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4756.been affixed to the stable North American tectonic plate. See 
 AB4756.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4756
 AB4756.The horizontal coordinates are valid at the epoch date displayed above
 AB4756.which is a decimal equivalence of Year/Month/Day.
 AB4756
 AB4756.The orthometric height was determined by GPS observations and a
 AB4756.high-resolution geoid model.
 AB4756
 AB4756.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4756.GEOID18 height accuracy estimate available here.
 AB4756
 AB4756.Click photographs - Photos may exist for this station.
 AB4756
 AB4756.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4756
 AB4756.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4756
 AB4756.The ellipsoidal height was determined by GPS observations
 AB4756.and is referenced to NAD 83.
 AB4756
 AB4756. The following values were computed from the NAD 83(2011) position.
 AB4756
 AB4756;                    North         East     Units Scale Factor Converg.
 AB4756;SPC MD       -   219,141.848   393,089.362   MT  1.00003893   -0 03 01.9
 AB4756;SPC MD       -   718,967.88  1,289,660.68   sFT  1.00003893   -0 03 01.9
 AB4756;UTM  18      - 4,389,950.126   321,474.255   MT  0.99999240   -1 19 39.5
 AB4756
 AB4756!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4756!SPC MD       -   0.99997649  x   1.00003893  =   1.00001542
 AB4756!UTM  18      -   0.99997649  x   0.99999240  =   0.99996889
 AB4756
 AB4756:                Primary Azimuth Mark                     Grid Az
 AB4756:SPC MD       -  CROSS AZ MK                              135 19 33.7
 AB4756:UTM  18      -  CROSS AZ MK                              136 36 11.3
 AB4756
 AB4756_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2147489950(NAD 83)
 AB4756
 AB4756|---------------------------------------------------------------------|
 AB4756| PID    Reference Object                     Distance      Geod. Az  |
 AB4756|                                                           dddmmss.s |
 AB4756| AB4757 CROSS AZ MK                         APPROX. 0.9 KM 1351631.8 |
 AB4756|---------------------------------------------------------------------|
 AB4756
 AB4756                          SUPERSEDED SURVEY CONTROL
 AB4756
 AB4756  NAD 83(2007)-  39 38 26.58874(N)    077 04 49.81207(W) AD(2002.00) 0
 AB4756  ELLIP H (02/10/07)  149.899  (m)                       GP(2002.00)    
 AB4756  ELLIP H (08/30/02)  149.879  (m)                       GP(       ) 4 2
 AB4756  NAD 83(1991)-  39 38 26.58825(N)    077 04 49.81276(W) AD(       ) 1
 AB4756  ELLIP H (07/03/96)  149.819  (m)                       GP(       ) 1 1
 AB4756  NAVD 88 (07/03/96)  182.5    (m)  GEOID93  model used  GPS OBS        
 AB4756
 AB4756.Superseded values are not recommended for survey control.
 AB4756
 AB4756.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4756.See file dsdata.pdf to determine how the superseded data were derived.
 AB4756
 AB4756_MARKER: DD = SURVEY DISK
 AB4756_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4756_STAMPING: CROSS RESET 1995
 AB4756_MARK LOGO: MD-013
 AB4756_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4756_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4756+STABILITY: SURFACE MOTION
 AB4756_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4756+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4756
 AB4756  HISTORY     - Date     Condition        Report By
 AB4756  HISTORY     - 1995     MONUMENTED       MD-013
 AB4756
 AB4756                          STATION DESCRIPTION
 AB4756
 AB4756'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4756'STATION IS LOCATED ABOUT 6.5 MI (10.5 KM) NORTHWEST OF WESTMINSTER AND
 AB4756'ABOUT 5 MI (8.0 KM) EAST OF TANEYTOWN. TO REACH STATION FROM THE
 AB4756'INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 32 (MAIN
 AB4756'STREET) IN WESTMINSTER, GO WEST ON MD ROUTE 140 FOR 4.6 MI (7.4 KM) TO
 AB4756'THE INTERSECTION WITH TYRONE ROAD. TURN RIGHT ON TYRONE ROAD AND GO
 AB4756'NORTH FOR 1.4 MI (2.3 KM) TO THE INTERSECTION WITH CROSS SECTION ROAD.
 AB4756'TURN LEFT ON CROSS SECTION ROAD AND GO WEST FOR 0.6 MI (1.0 KM) TO THE
 AB4756'STATION ON THE LEFT ON TOP OF A HIGH BANK. STATION IS ACROSS THE
 AB4756'STREET AND JUST EAST OF A PAVED DRIVE LEADING NORTH TO HOUSE NO.2401.
 AB4756'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AB4756'SET FLUSH WITH THE GROUND. IT IS 39.0 FT (11.9 M) SOUTH OF THE
 AB4756'CENTERLINE OF THE ROAD, 6.0 FT (1.8 M) NORTH OF THE EDGE OF A
 AB4756'CULTIVATED FIELD AND 18.7 FT (5.7 M) SOUTHEAST OF A TELEPHONE
 AB4756'PEDESTAL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6293 ***********************************************************************
 JV6293  DESIGNATION -  CROSSROADS
 JV6293  PID         -  JV6293
 JV6293  STATE/COUNTY-  MD/HARFORD
 JV6293  COUNTRY     -  US
 JV6293  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6293
 JV6293                         *CURRENT SURVEY CONTROL
 JV6293  ______________________________________________________________________
 JV6293* NAD 83(2011) POSITION- 39 32 36.42200(N) 076 28 23.94910(W)   ADJUSTED
 JV6293* NAD 83(2011) ELLIP HT-   145.094 (meters)        (06/27/12)   ADJUSTED
 JV6293* NAD 83(2011) EPOCH   -  2010.00
 JV6293* NAVD 88 ORTHO HEIGHT -   177.665 (meters)      582.89  (feet) ADJUSTED
 JV6293  ______________________________________________________________________
 JV6293  GEOID HEIGHT    -        -32.581 (meters)                     GEOID18
 JV6293  NAD 83(2011) X  -  1,152,006.312 (meters)                     COMP
 JV6293  NAD 83(2011) Y  - -4,788,626.930 (meters)                     COMP
 JV6293  NAD 83(2011) Z  -  4,039,117.139 (meters)                     COMP
 JV6293  LAPLACE CORR    -         -2.83  (seconds)                    DEFLEC18
 JV6293  DYNAMIC HEIGHT  -        177.573 (meters)      582.59  (feet) COMP
 JV6293  MODELED GRAVITY -    980,104.1   (mgal)                       NAVD 88
 JV6293
 JV6293  VERT ORDER      -  FIRST     CLASS II
 JV6293
 JV6293  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6293  Standards:
 JV6293         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6293            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6293  -------------------------------------------------------------------
 JV6293  NETWORK    1.52   4.41           0.65   0.57   2.25      0.30841087
 JV6293  -------------------------------------------------------------------
 JV6293  Click here for local accuracies and other accuracy information.
 JV6293
 JV6293.The horizontal coordinates were established by GPS observations
 JV6293.and adjusted by the National Geodetic Survey in June 2012.
 JV6293
 JV6293.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6293.been affixed to the stable North American tectonic plate. See 
 JV6293.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6293
 JV6293.The horizontal coordinates are valid at the epoch date displayed above
 JV6293.which is a decimal equivalence of Year/Month/Day.
 JV6293
 JV6293.The orthometric height was determined by differential leveling and
 JV6293.adjusted by the NATIONAL GEODETIC SURVEY
 JV6293.in June 1991.
 JV6293
 JV6293.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6293.GEOID18 height accuracy estimate available here.
 JV6293
 JV6293.Click photographs - Photos may exist for this station.
 JV6293
 JV6293.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6293
 JV6293.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6293
 JV6293.The ellipsoidal height was determined by GPS observations
 JV6293.and is referenced to NAD 83.
 JV6293
 JV6293.The dynamic height is computed by dividing the NAVD 88
 JV6293.geopotential number by the normal gravity value computed on the
 JV6293.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6293.degrees latitude (g = 980.6199 gals.).
 JV6293
 JV6293.The modeled gravity was interpolated from observed gravity values.
 JV6293
 JV6293. The following values were computed from the NAD 83(2011) position.
 JV6293
 JV6293;                    North         East     Units Scale Factor Converg.
 JV6293;SPC MD       -   208,469.695   445,273.947   MT  1.00001768   +0 19 50.0
 JV6293;SPC MD       -   683,954.32  1,460,869.61   sFT  1.00001768   +0 19 50.0
 JV6293;UTM  18      - 4,378,123.113   373,401.705   MT  0.99979733   -0 56 17.3
 JV6293
 JV6293!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6293!SPC MD       -   0.99997724  x   1.00001768  =   0.99999492
 JV6293!UTM  18      -   0.99997724  x   0.99979733  =   0.99977457
 JV6293
 JV6293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7340178123(NAD 83)
 JV6293
 JV6293                          SUPERSEDED SURVEY CONTROL
 JV6293
 JV6293  NAD 83(2007)-  39 32 36.42207(N)    076 28 23.94992(W) AD(2002.00) 0
 JV6293  ELLIP H (02/10/07)  145.112  (m)                       GP(2002.00)    
 JV6293  ELLIP H (09/18/02)  145.101  (m)                       GP(       ) 4 2
 JV6293  NAD 83(1991)-  39 32 36.42254(N)    076 28 23.94802(W) AD(       ) 1
 JV6293  ELLIP H (01/27/92)  145.097  (m)                       GP(       ) 4 1
 JV6293  NAD 83(1986)-  39 32 36.41586(N)    076 28 23.95540(W) AD(       ) 1
 JV6293  NGVD 29             177.90   (m)          583.7    (f) LEVELING    3  
 JV6293
 JV6293.Superseded values are not recommended for survey control.
 JV6293
 JV6293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6293.See file dsdata.pdf to determine how the superseded data were derived.
 JV6293
 JV6293_MARKER: DD = SURVEY DISK
 JV6293_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6293_STAMPING: 61 CROSSROADS 1989
 JV6293_MARK LOGO: MD-025
 JV6293_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6293_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6293+STABILITY: SURFACE MOTION
 JV6293_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6293+SATELLITE: SATELLITE OBSERVATIONS - July 21, 2005
 JV6293
 JV6293  HISTORY     - Date     Condition        Report By
 JV6293  HISTORY     - 1989     MONUMENTED       RDA
 JV6293  HISTORY     - 19931209 GOOD             GEOMET
 JV6293  HISTORY     - 19990608 GOOD             GEOMET
 JV6293  HISTORY     - 20010103 GOOD             MDSHA
 JV6293  HISTORY     - 20010217 GOOD             USPSQD
 JV6293  HISTORY     - 20030321 GOOD             DMW
 JV6293  HISTORY     - 20050721 GOOD             DEWDAV
 JV6293
 JV6293                          STATION DESCRIPTION
 JV6293
 JV6293'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6293'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 7
 JV6293'MILES WEST OF THE VILLAGE OF BEL AIR.  TO REACH THE STATION FROM THE
 JV6293'INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 152 PROCEED
 JV6293'NORTHWEST ALONG HIGHWAY 152 5.75 MILES TO THE INTERSECTION OF STATE
 JV6293'HIGHWAY 152 AND STATE HIGHWAY 165 AND THE STATION ON THE LEFT IN THE
 JV6293'SOUTHEAST CORNER OF THE INTERSECTION IN FRONT OF A COMMERCIAL BANK.
 JV6293'THE STATION IS A STANDARD HARFORD COUNTY STATION DISC SET IN CONCRETE
 JV6293'ABOUT 1 INCH BELOW GROUND STAMPED 61 CROSSROADS 1989.  THE STATION IS
 JV6293'5.9 FEET NORTHWEST OF POWER POLE, 123.2 FEET SOUTHEAST OF THE
 JV6293'CENTERLINE OF HIGHWAY 165, 123.5 FEET SOUTHWEST OF THE CENTERLINE OF
 JV6293'HIGHWAY 152.
 JV6293
 JV6293                          STATION RECOVERY (1993)
 JV6293
 JV6293'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6293'RECOVERED IN GOOD CONDITION.
 JV6293
 JV6293                          STATION RECOVERY (1999)
 JV6293
 JV6293'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BB)
 JV6293'RECOVERED AS DESCRIBED.
 JV6293
 JV6293                          STATION RECOVERY (2001)
 JV6293
 JV6293'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV6293'RECOVERED AS DESCRIBED.
 JV6293
 JV6293                          STATION RECOVERY (2001)
 JV6293
 JV6293'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV6293'RECOVERED IN GOOD CONDITION.
 JV6293
 JV6293                          STATION RECOVERY (2003)
 JV6293
 JV6293'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (JMB)
 JV6293'RECOVERED IN GOOD CONDITION.
 JV6293
 JV6293                          STATION RECOVERY (2005)
 JV6293
 JV6293'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (WM)
 JV6293'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6327 ***********************************************************************
 JV6327  DESIGNATION -  CROSSROADS AZ MK
 JV6327  PID         -  JV6327
 JV6327  STATE/COUNTY-  MD/HARFORD
 JV6327  COUNTRY     -  US
 JV6327  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6327
 JV6327                         *CURRENT SURVEY CONTROL
 JV6327  ______________________________________________________________________
 JV6327* NAD 83(2011) POSITION- 39 33 11.70628(N) 076 29 19.09958(W)   ADJUSTED
 JV6327* NAD 83(2011) ELLIP HT-   141.592 (meters)        (06/27/12)   ADJUSTED
 JV6327* NAD 83(2011) EPOCH   -  2010.00
 JV6327* NAVD 88 ORTHO HEIGHT -   174.121 (meters)      571.26  (feet) ADJUSTED
 JV6327  ______________________________________________________________________
 JV6327  GEOID HEIGHT    -        -32.549 (meters)                     GEOID18
 JV6327  NAD 83(2011) X  -  1,150,563.384 (meters)                     COMP
 JV6327  NAD 83(2011) Y  - -4,788,258.435 (meters)                     COMP
 JV6327  NAD 83(2011) Z  -  4,039,954.016 (meters)                     COMP
 JV6327  LAPLACE CORR    -         -2.79  (seconds)                    DEFLEC18
 JV6327  DYNAMIC HEIGHT  -        174.030 (meters)      570.96  (feet) COMP
 JV6327  MODELED GRAVITY -    980,103.7   (mgal)                       NAVD 88
 JV6327
 JV6327  VERT ORDER      -  FIRST     CLASS II
 JV6327
 JV6327  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6327  Standards:
 JV6327         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6327            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6327  -------------------------------------------------------------------
 JV6327  NETWORK    2.46   6.53           0.98   1.03   3.33      0.07674865
 JV6327  -------------------------------------------------------------------
 JV6327  Click here for local accuracies and other accuracy information.
 JV6327
 JV6327.The horizontal coordinates were established by GPS observations
 JV6327.and adjusted by the National Geodetic Survey in June 2012.
 JV6327
 JV6327.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6327.been affixed to the stable North American tectonic plate. See 
 JV6327.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6327
 JV6327.The horizontal coordinates are valid at the epoch date displayed above
 JV6327.which is a decimal equivalence of Year/Month/Day.
 JV6327
 JV6327.The orthometric height was determined by differential leveling and
 JV6327.adjusted by the NATIONAL GEODETIC SURVEY
 JV6327.in June 1991.
 JV6327
 JV6327.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6327.GEOID18 height accuracy estimate available here.
 JV6327
 JV6327.Click photographs - Photos may exist for this station.
 JV6327
 JV6327.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6327
 JV6327.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6327
 JV6327.The ellipsoidal height was determined by GPS observations
 JV6327.and is referenced to NAD 83.
 JV6327
 JV6327.The dynamic height is computed by dividing the NAVD 88
 JV6327.geopotential number by the normal gravity value computed on the
 JV6327.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6327.degrees latitude (g = 980.6199 gals.).
 JV6327
 JV6327.The modeled gravity was interpolated from observed gravity values.
 JV6327
 JV6327. The following values were computed from the NAD 83(2011) position.
 JV6327
 JV6327;                    North         East     Units Scale Factor Converg.
 JV6327;SPC MD       -   209,550.398   443,950.980   MT  1.00001969   +0 19 15.4
 JV6327;SPC MD       -   687,499.93  1,456,529.17   sFT  1.00001969   +0 19 15.4
 JV6327;UTM  18      - 4,379,232.603   372,103.279   MT  0.99980139   -0 56 53.1
 JV6327
 JV6327!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6327!SPC MD       -   0.99997779  x   1.00001969  =   0.99999748
 JV6327!UTM  18      -   0.99997779  x   0.99980139  =   0.99977918
 JV6327
 JV6327_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7210379232(NAD 83)
 JV6327
 JV6327                          SUPERSEDED SURVEY CONTROL
 JV6327
 JV6327  NAD 83(2007)-  39 33 11.70635(N)    076 29 19.10041(W) AD(2002.00) 0
 JV6327  ELLIP H (02/10/07)  141.610  (m)                       GP(2002.00)    
 JV6327  ELLIP H (09/18/02)  141.583  (m)                       GP(       ) 4 2
 JV6327  NAD 83(1991)-  39 33 11.70715(N)    076 29 19.09926(W) AD(       ) 1
 JV6327  ELLIP H (01/27/92)  141.573  (m)                       GP(       ) 4 1
 JV6327  NAD 83(1986)-  39 33 11.70045(N)    076 29 19.10660(W) AD(       ) 1
 JV6327  NGVD 29             174.36   (m)          572.0    (f) LEVELING    3  
 JV6327
 JV6327.Superseded values are not recommended for survey control.
 JV6327
 JV6327.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6327.See file dsdata.pdf to determine how the superseded data were derived.
 JV6327
 JV6327_MARKER: DZ = AZIMUTH MARK DISK
 JV6327_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6327_STAMPING: 61 CROSSROADS 1989
 JV6327_MARK LOGO: MD-025
 JV6327_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6327_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6327+STABILITY: SURFACE MOTION
 JV6327_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6327+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2003
 JV6327
 JV6327  HISTORY     - Date     Condition        Report By
 JV6327  HISTORY     - 1989     MONUMENTED       RDA
 JV6327  HISTORY     - 19991226 GOOD             USPSQD
 JV6327  HISTORY     - 20030321 GOOD             DMW
 JV6327
 JV6327                          STATION DESCRIPTION
 JV6327
 JV6327'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6327'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 7
 JV6327'MILES WEST OF THE VILLAGE OF BEL AIR.  TO REACH THE STATION FROM THE
 JV6327'INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 152 PROCEED
 JV6327'NORTHWEST ALONG HIGHWAY 152 5.75 MILES TO THE INTERSECTION OF STATE
 JV6327'HIGHWAY 152 AND STATE HIGHWAY 165 AND THE STATION ON THE LEFT IN THE
 JV6327'SOUTHEAST CORNER OF THE INTERSECTION IN FRONT OF A COMMERCIAL BANK.
 JV6327'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTHWEST ALONG
 JV6327'HIGHWAY 152 1.0 MILES TO THE MARK ON THE LEFT.  THE MARK IS A
 JV6327'STANDARD HARFORD COUNTY AZIMUTH DISC SET IN CONCRETE ABOUT 1 INCH
 JV6327'BELOW GROUND STAMPED 61 CROSSROADS 1989.  THE MARK IS 107.1 FEET
 JV6327'SOUTHEAST OF C AND P OF MARYLAND TELEPHONE POLE NUMBER 23, 85.2 FEET
 JV6327'SOUTHWEST OF THE CENTERLINE OF HIGHWAY 152, 88.6 FEET NORTHWEST OF C
 JV6327'AND P OF MARYLAND TELEPHONE POLE NUMBER 22.
 JV6327
 JV6327                          STATION RECOVERY (1999)
 JV6327
 JV6327'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6327'RECOVERED IN GOOD CONDITION.
 JV6327
 JV6327                          STATION RECOVERY (2003)
 JV6327
 JV6327'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (JMB)
 JV6327'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6218 ***********************************************************************
 DN6218  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6218  DESIGNATION -  CROTHERS
 DN6218  PID         -  DN6218
 DN6218  STATE/COUNTY-  MD/CECIL
 DN6218  COUNTRY     -  US
 DN6218  USGS QUAD   -  RISING SUN (2016)
 DN6218
 DN6218                         *CURRENT SURVEY CONTROL
 DN6218  ______________________________________________________________________
 DN6218* NAD 83(2011) POSITION- 39 40 03.97938(N) 076 00 25.34569(W)   ADJUSTED
 DN6218* NAD 83(2011) ELLIP HT-    89.528 (meters)        (06/27/12)   ADJUSTED
 DN6218* NAD 83(2011) EPOCH   -  2010.00
 DN6218* NAVD 88 ORTHO HEIGHT -   122.54  (meters)      402.0   (feet) GPS OBS
 DN6218  ______________________________________________________________________
 DN6218  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6218  GEOID HEIGHT    -        -32.994 (meters)                     GEOID03
 DN6218  GEOID HEIGHT    -        -33.017 (meters)                     GEOID18
 DN6218  NAD 83(2011) X  -  1,188,799.936 (meters)                     COMP
 DN6218  NAD 83(2011) Y  - -4,770,513.307 (meters)                     COMP
 DN6218  NAD 83(2011) Z  -  4,049,716.482 (meters)                     COMP
 DN6218  LAPLACE CORR    -         -1.22  (seconds)                    DEFLEC18
 DN6218
 DN6218  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6218  Standards:
 DN6218         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6218            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6218  -------------------------------------------------------------------
 DN6218  NETWORK    0.51   1.14           0.23   0.18   0.58      0.11983357
 DN6218  -------------------------------------------------------------------
 DN6218  Click here for local accuracies and other accuracy information.
 DN6218
 DN6218.The horizontal coordinates were established by GPS observations
 DN6218.and adjusted by the National Geodetic Survey in June 2012.
 DN6218
 DN6218.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6218.been affixed to the stable North American tectonic plate. See 
 DN6218.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6218
 DN6218.The horizontal coordinates are valid at the epoch date displayed above
 DN6218.which is a decimal equivalence of Year/Month/Day.
 DN6218
 DN6218.The orthometric height was determined by GPS observations and a
 DN6218.high-resolution geoid model using precise GPS observation and
 DN6218.processing techniques.
 DN6218
 DN6218.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6218.GEOID18 height accuracy estimate available here.
 DN6218
 DN6218.Click photographs - Photos may exist for this station.
 DN6218
 DN6218.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6218
 DN6218.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6218
 DN6218.The ellipsoidal height was determined by GPS observations
 DN6218.and is referenced to NAD 83.
 DN6218
 DN6218. The following values were computed from the NAD 83(2011) position.
 DN6218
 DN6218;                    North         East     Units Scale Factor Converg.
 DN6218;SPC MD       -   222,605.968   485,204.328   MT  1.00004536   +0 37 23.6
 DN6218;SPC MD       -   730,333.08  1,591,874.53   sFT  1.00004536   +0 37 23.6
 DN6218;UTM  18      - 4,391,368.803   413,623.355   MT  0.99969185   -0 38 34.3
 DN6218
 DN6218!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6218!SPC MD       -   0.99998595  x   1.00004536  =   1.00003131
 DN6218!UTM  18      -   0.99998595  x   0.99969185  =   0.99967781
 DN6218
 DN6218_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1362391368(NAD 83)
 DN6218
 DN6218                          SUPERSEDED SURVEY CONTROL
 DN6218
 DN6218  NAD 83(2007)-  39 40 03.97957(N)    076 00 25.34649(W) AD(2002.00) 1
 DN6218  ELLIP H (02/23/12)   89.551  (m)                       GP(2002.00) 4 1
 DN6218
 DN6218.Superseded values are not recommended for survey control.
 DN6218
 DN6218.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6218.See file dsdata.pdf to determine how the superseded data were derived.
 DN6218
 DN6218_MARKER: DD = SURVEY DISK
 DN6218_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6218_STAMPING: CROTHERS 2008
 DN6218_MARK LOGO: MD-015
 DN6218_PROJECTION: FLUSH
 DN6218_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6218_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6218+STABILITY: SURFACE MOTION
 DN6218_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6218+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6218
 DN6218  HISTORY     - Date     Condition        Report By
 DN6218  HISTORY     - 20081204 MONUMENTED       GWS
 DN6218  HISTORY     - 20251008 GOOD             PROFLN
 DN6218
 DN6218                          STATION DESCRIPTION
 DN6218
 DN6218'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6218'THE STATION IS LOCATED ABOUT 5.8 MI (9.3 KM) NORTHWEST OF NORTH EAST,
 DN6218'3.6 MI (5.8 KM) SOUTHEAST OF RISING SUN AND 2.9 MI (4.7 KM) NORTHWEST
 DN6218'OF BAY VIEW.
 DN6218'
 DN6218'TO REACH FROM THE JUNCTION OF MD 272 AND MD 274, GO WEST ON MD 274 FOR
 DN6218'3.01 MI (4.8 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO
 DN6218'NORTH-NORTHEAST ON SIMMERS ROAD FOR 0.50 MI (0.8 KM) TO A
 DN6218'T-INTERSECTION.  TURN LEFT AND GO WEST-SOUTHWEST ON CROTHERS ROAD FOR
 DN6218'0.10 MI (0.2 KM) TO THE STATION ON THE RIGHT.
 DN6218'
 DN6218'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6218'CONCRETE MONUMENT, 18.5 FT (5.6 M) NORTHWEST OF THE CENTERLINE OF
 DN6218'CROTHERS ROAD, 62 FT (18.9 M) NORTHEAST OF THE DRIVEWAY TO 207
 DN6218'CROTHERS ROAD AND 66 FT (20.1 M) NORTHWEST OF A UTILITY POLE (CONECTIV
 DN6218'35701/40661) ON THE SOUTHEAST SIDE OF THE ROAD.
 DN6218
 DN6218                          STATION RECOVERY (2025)
 DN6218
 DN6218'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6218'THE MARK IS 82 FT (25.0 M), NOT 62 FT (18.9 M), NE OF THE LONG
 DN6218'DRIVEWAY HEADING NORTHWEST TO HOUSE 207.  IT IS 46 FT (14.0 M)
 DN6218'SOUTHWEST OF THE SOUTHWEST LINE EXTENDED OF HOUSE 222 - ONE STORY TAN
 DN6218'VINYL SIDING - 6.5 FT (2.0 M) SOUTHEAST OF A BLACK POST-AND-BOARD
 DN6218'FENCE, 4 FT (1.2 M) NORTHEAST OF THE NORTHEAST LINE EXTENDED OF HOUSE
 DN6218'214 - 1 STORY CREAM VINYL SIDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4642 ***********************************************************************
 AB4642  DESIGNATION -  CROUSE
 AB4642  PID         -  AB4642
 AB4642  STATE/COUNTY-  MD/CARROLL
 AB4642  COUNTRY     -  US
 AB4642  USGS QUAD   -  UNION BRIDGE (2016)
 AB4642
 AB4642                         *CURRENT SURVEY CONTROL
 AB4642  ______________________________________________________________________
 AB4642* NAD 83(2011) POSITION- 39 37 19.64499(N) 077 11 57.28048(W)   ADJUSTED
 AB4642* NAD 83(2011) ELLIP HT-   119.257 (meters)        (06/27/12)   ADJUSTED
 AB4642* NAD 83(2011) EPOCH   -  2010.00
 AB4642* NAVD 88 ORTHO HEIGHT -   152.1   (meters)      499.    (feet) GPS OBS
 AB4642  ______________________________________________________________________
 AB4642  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4642  GEOID HEIGHT    -        -32.873 (meters)                     GEOID99
 AB4642  GEOID HEIGHT    -        -32.874 (meters)                     GEOID18
 AB4642  NAD 83(2011) X  -  1,090,006.993 (meters)                     COMP
 AB4642  NAD 83(2011) Y  - -4,797,390.925 (meters)                     COMP
 AB4642  NAD 83(2011) Z  -  4,045,832.770 (meters)                     COMP
 AB4642  LAPLACE CORR    -          4.44  (seconds)                    DEFLEC18
 AB4642
 AB4642  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4642  Standards:
 AB4642         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4642            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4642  -------------------------------------------------------------------
 AB4642  NETWORK    1.14   3.45           0.53   0.36   1.76      0.19258572
 AB4642  -------------------------------------------------------------------
 AB4642  Click here for local accuracies and other accuracy information.
 AB4642
 AB4642.The horizontal coordinates were established by GPS observations
 AB4642.and adjusted by the National Geodetic Survey in June 2012.
 AB4642
 AB4642.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4642.been affixed to the stable North American tectonic plate. See 
 AB4642.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4642
 AB4642.The horizontal coordinates are valid at the epoch date displayed above
 AB4642.which is a decimal equivalence of Year/Month/Day.
 AB4642
 AB4642.The orthometric height was determined by GPS observations and a
 AB4642.high-resolution geoid model.
 AB4642
 AB4642.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4642.GEOID18 height accuracy estimate available here.
 AB4642
 AB4642.Click photographs - Photos may exist for this station.
 AB4642
 AB4642.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4642
 AB4642.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4642
 AB4642.The ellipsoidal height was determined by GPS observations
 AB4642.and is referenced to NAD 83.
 AB4642
 AB4642. The following values were computed from the NAD 83(2011) position.
 AB4642
 AB4642;                    North         East     Units Scale Factor Converg.
 AB4642;SPC MD       -   217,092.794   382,891.744   MT  1.00003465   -0 07 30.2
 AB4642;SPC MD       -   712,245.27  1,256,204.00   sFT  1.00003465   -0 07 30.2
 AB4642;UTM  18      - 4,388,128.973   311,233.709   MT  1.00003872   -1 24 10.5
 AB4642
 AB4642!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4642!SPC MD       -   0.99998129  x   1.00003465  =   1.00001594
 AB4642!UTM  18      -   0.99998129  x   1.00003872  =   1.00002001
 AB4642
 AB4642:                Primary Azimuth Mark                     Grid Az
 AB4642:SPC MD       -  CROUSE AZ MK                             173 25 10.4
 AB4642:UTM  18      -  CROUSE AZ MK                             174 41 50.7
 AB4642
 AB4642_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1123388128(NAD 83)
 AB4642
 AB4642|---------------------------------------------------------------------|
 AB4642| PID    Reference Object                     Distance      Geod. Az  |
 AB4642|                                                           dddmmss.s |
 AB4642| AB4729 CROUSE AZ MK                        APPROX. 0.9 KM 1731740.2 |
 AB4642|---------------------------------------------------------------------|
 AB4642
 AB4642                          SUPERSEDED SURVEY CONTROL
 AB4642
 AB4642  NAD 83(2007)-  39 37 19.64586(N)    077 11 57.28101(W) AD(2002.00) 0
 AB4642  ELLIP H (02/10/07)  119.259  (m)                       GP(2002.00)    
 AB4642  ELLIP H (08/30/02)  119.254  (m)                       GP(       ) 4 2
 AB4642  NAD 83(1991)-  39 37 19.64556(N)    077 11 57.28058(W) AD(       ) 1
 AB4642  ELLIP H (07/03/96)  119.218  (m)                       GP(       ) 1 1
 AB4642  NAVD 88 (07/03/96)  152.1    (m)  GEOID93  model used  GPS OBS        
 AB4642
 AB4642.Superseded values are not recommended for survey control.
 AB4642
 AB4642.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4642.See file dsdata.pdf to determine how the superseded data were derived.
 AB4642
 AB4642_MARKER: DD = SURVEY DISK
 AB4642_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4642_STAMPING: CROUSE 1995
 AB4642_MARK LOGO: MD-013
 AB4642_PROJECTION: RECESSED 2 CENTIMETERS
 AB4642_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4642_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4642+STABILITY: SURFACE MOTION
 AB4642_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4642+SATELLITE: SATELLITE OBSERVATIONS - October 08, 2024
 AB4642
 AB4642  HISTORY     - Date     Condition        Report By
 AB4642  HISTORY     - 1995     MONUMENTED       MD-013
 AB4642  HISTORY     - 20070529 GOOD             GEOCAC
 AB4642  HISTORY     - 20241008 GOOD             BASE9
 AB4642
 AB4642                          STATION DESCRIPTION
 AB4642
 AB4642'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4642'STATION IS LOCATED ABOUT 3 MI (4.8 KM) SOUTHWEST OF TANEYTOWN AND
 AB4642'ABOUT 3.5 MI (5.6 KM) NORTHWEST OF UNION BRIDGE. TO REACH STATION FROM
 AB4642'THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 194
 AB4642'(FRANCIS SCOTT KEY HIGHWAY) AT TANEYTOWN GO SOUTH ON MD ROUTE 194 FOR
 AB4642'0.65 MI (1.05 KM) TO THE INTERSECTION WITH CROUSE MILL ROAD. TURN LEFT
 AB4642'ON CROUSE MILL ROAD AND GO SOUTH FOR 2.35 MI (3.78 KM) TO THE STATION
 AB4642'ON THE LEFT. STATION IS ALSO 0.8 MI (1.3 KM) SOUTH OF THE INTERSECTION
 AB4642'OF STOVER ROAD AND CROUSE MILL ROAD AND 0.25 NORTH OF THE INTERSECTION
 AB4642'OF HAPES MILL ROAD AND CROUSE MILL ROAD. STATION MARK IS SET IN THE
 AB4642'TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 AB4642'IT IS 17.6 FT (5.4 M) EAST OF THE CENTERLINE OF THE ROAD, 179 FT (54.6
 AB4642'M) SOUTH OF A GRAVEL DRIVEWAY LEADING EAST TO HOUSE NO.1711, 36.2 FT
 AB4642'(11.0 M) EAST OF TELEPHONE POLE NO.16 AND 3.5 FT (1.1 M) SOUTH OF A
 AB4642'TELEPHONE GUY POLE NO.16.5.
 AB4642
 AB4642                          STATION RECOVERY (2007)
 AB4642
 AB4642'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 AB4642'RECOVERED IN GOOD CONDITION.
 AB4642
 AB4642                          STATION RECOVERY (2024)
 AB4642
 AB4642'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2024 (RLD)
 AB4642'THE MARK IS 1.17 M (3.8 FT) SOUTH OF THE CENTER OF OLD UTILITY POLE,
 AB4642'ONLY POLE MARKING IS C+P MD 16.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4729 ***********************************************************************
 AB4729  DESIGNATION -  CROUSE AZ MK
 AB4729  PID         -  AB4729
 AB4729  STATE/COUNTY-  MD/CARROLL
 AB4729  COUNTRY     -  US
 AB4729  USGS QUAD   -  UNION BRIDGE (2016)
 AB4729
 AB4729                         *CURRENT SURVEY CONTROL
 AB4729  ______________________________________________________________________
 AB4729* NAD 83(2011) POSITION- 39 36 52.18929(N) 077 11 53.10692(W)   ADJUSTED
 AB4729* NAD 83(2011) ELLIP HT-    95.304 (meters)        (06/27/12)   ADJUSTED
 AB4729* NAD 83(2011) EPOCH   -  2010.00
 AB4729* NAVD 88 ORTHO HEIGHT -   128.1   (meters)      420.    (feet) GPS OBS
 AB4729  ______________________________________________________________________
 AB4729  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4729  GEOID HEIGHT    -        -32.843 (meters)                     GEOID99
 AB4729  GEOID HEIGHT    -        -32.843 (meters)                     GEOID18
 AB4729  NAD 83(2011) X  -  1,090,219.620 (meters)                     COMP
 AB4729  NAD 83(2011) Y  - -4,797,877.416 (meters)                     COMP
 AB4729  NAD 83(2011) Z  -  4,045,165.218 (meters)                     COMP
 AB4729  LAPLACE CORR    -          4.51  (seconds)                    DEFLEC18
 AB4729
 AB4729  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4729  Standards:
 AB4729         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4729            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4729  -------------------------------------------------------------------
 AB4729  NETWORK    1.01   3.21           0.47   0.32   1.64      0.17179826
 AB4729  -------------------------------------------------------------------
 AB4729  Click here for local accuracies and other accuracy information.
 AB4729
 AB4729.The horizontal coordinates were established by GPS observations
 AB4729.and adjusted by the National Geodetic Survey in June 2012.
 AB4729
 AB4729.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4729.been affixed to the stable North American tectonic plate. See 
 AB4729.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4729
 AB4729.The horizontal coordinates are valid at the epoch date displayed above
 AB4729.which is a decimal equivalence of Year/Month/Day.
 AB4729
 AB4729.The orthometric height was determined by GPS observations and a
 AB4729.high-resolution geoid model.
 AB4729
 AB4729.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4729.GEOID18 height accuracy estimate available here.
 AB4729
 AB4729.Click photographs - Photos may exist for this station.
 AB4729
 AB4729.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4729
 AB4729.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4729
 AB4729.The ellipsoidal height was determined by GPS observations
 AB4729.and is referenced to NAD 83.
 AB4729
 AB4729. The following values were computed from the NAD 83(2011) position.
 AB4729
 AB4729;                    North         East     Units Scale Factor Converg.
 AB4729;SPC MD       -   216,245.791   382,989.452   MT  1.00003292   -0 07 27.6
 AB4729;SPC MD       -   709,466.40  1,256,524.56   sFT  1.00003292   -0 07 27.6
 AB4729;UTM  18      - 4,387,279.999   311,312.506   MT  1.00003835   -1 24 07.0
 AB4729
 AB4729!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4729!SPC MD       -   0.99998505  x   1.00003292  =   1.00001797
 AB4729!UTM  18      -   0.99998505  x   1.00003835  =   1.00002340
 AB4729
 AB4729:                Primary Azimuth Mark                     Grid Az
 AB4729:SPC MD       -  CROUSE                                   353 25 10.5
 AB4729:UTM  18      -  CROUSE                                   354 41 49.9
 AB4729
 AB4729_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1131287279(NAD 83)
 AB4729
 AB4729|---------------------------------------------------------------------|
 AB4729| PID    Reference Object                     Distance      Geod. Az  |
 AB4729|                                                           dddmmss.s |
 AB4729| AB4642 CROUSE                              APPROX. 0.9 KM 3531742.9 |
 AB4729|---------------------------------------------------------------------|
 AB4729
 AB4729                          SUPERSEDED SURVEY CONTROL
 AB4729
 AB4729  NAD 83(2007)-  39 36 52.19010(N)    077 11 53.10746(W) AD(2002.00) 0
 AB4729  ELLIP H (02/10/07)   95.308  (m)                       GP(2002.00)    
 AB4729  ELLIP H (08/30/02)   95.304  (m)                       GP(       ) 4 2
 AB4729  NAD 83(1991)-  39 36 52.18969(N)    077 11 53.10708(W) AD(       ) 1
 AB4729  ELLIP H (07/03/96)   95.267  (m)                       GP(       ) 1 1
 AB4729  NAVD 88 (07/03/96)  128.1    (m)  GEOID93  model used  GPS OBS        
 AB4729
 AB4729.Superseded values are not recommended for survey control.
 AB4729
 AB4729.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4729.See file dsdata.pdf to determine how the superseded data were derived.
 AB4729
 AB4729_MARKER: DD = SURVEY DISK
 AB4729_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4729_STAMPING: CROUSE AZI 1995
 AB4729_MARK LOGO: MD-013
 AB4729_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4729_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4729+STABILITY: SURFACE MOTION
 AB4729_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4729+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4729
 AB4729  HISTORY     - Date     Condition        Report By
 AB4729  HISTORY     - 1995     MONUMENTED       MD-013
 AB4729
 AB4729                          STATION DESCRIPTION
 AB4729
 AB4729'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4729'STATION IS LOCATED ABOUT 3 MI (4.8 KM) SOUTHWEST OF TANEYTOWN AND
 AB4729'ABOUT 3.5 MI (5.6 KM) NORTHWEST OF UNION BRIDGE. TO REACH STATION FROM
 AB4729'THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 194
 AB4729'(FRANCIS SCOTT KEY HIGHWAY) AT TANEYTOWN GO SOUTH ON MD ROUTE 194 FOR
 AB4729'0.65 MI (1.05 KM) TO THE INTERSECTION WITH CROUSE MILL ROAD. TURN LEFT
 AB4729'ON CROUSE MILL ROAD AND GO SOUTH FOR 2.6 MI (4.2 KM) TO THE
 AB4729'INTERSECTION WITH HAPES MILL ROAD. TURN LEFT ON HAPES MILL ROAD AND GO
 AB4729'EAST FOR 0.35 MI (0.56 KM) TO THE STATION ON THE RIGHT IN A GRASSY
 AB4729'AREA NEAR A BRICK FARM HOUSE. STATION MARK IS SET IN THE TOP OF A 10
 AB4729'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 16.0 FT
 AB4729'(4.9 M) SOUTH OF THE CENTERLINE OF THE ROAD, 104.5 FT (31.9 M)
 AB4729'SOUTHEAST OF POWER POLE NO.U-2472, 102 FT (31.1 M) EAST OF THE END OF
 AB4729'A FENCE AND 160.8 FT (49.0 M) SOUTHEAST OF POWER POLE NO.U-2471.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5333 ***********************************************************************
 JV5333  DESIGNATION -  CROW
 JV5333  PID         -  JV5333
 JV5333  STATE/COUNTY-  MD/BALTIMORE
 JV5333  COUNTRY     -  US
 JV5333  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5333
 JV5333                         *CURRENT SURVEY CONTROL
 JV5333  ______________________________________________________________________
 JV5333* NAD 83(1991) POSITION- 39 15 24.73088(N) 076 21 49.90306(W)   ADJUSTED
 JV5333* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5333  ______________________________________________________________________
 JV5333  GEOID HEIGHT    -        -33.084 (meters)                     GEOID18
 JV5333  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 JV5333  HORZ ORDER      -  SECOND
 JV5333
 JV5333.The horizontal coordinates were established by classical geodetic methods
 JV5333.and adjusted by the National Geodetic Survey in January 1992.
 JV5333
 JV5333.The orthometric height was scaled from a topographic map.
 JV5333
 JV5333.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5333.GEOID18 height accuracy estimate available here.
 JV5333
 JV5333.Click photographs - Photos may exist for this station.
 JV5333
 JV5333.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5333
 JV5333. The following values were computed from the NAD 83(1991) position.
 JV5333
 JV5333;                    North         East     Units Scale Factor Converg.
 JV5333;SPC MD       -   176,713.520   454,904.560   MT  0.99997192   +0 23 57.3
 JV5333;SPC MD       -   579,767.61  1,492,466.04   sFT  0.99997192   +0 23 57.3
 JV5333;UTM  18      - 4,346,168.670   382,326.767   MT  0.99977049   -0 51 47.3
 JV5333
 JV5333!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5333!SPC MD       -   1.00000508  x   0.99997192  =   0.99997700
 JV5333!UTM  18      -   1.00000508  x   0.99977049  =   0.99977556
 JV5333
 JV5333:                Primary Azimuth Mark                     Grid Az
 JV5333:SPC MD       -  HART 2                                   246 03 08.5
 JV5333:UTM  18      -  HART 2                                   247 18 53.1
 JV5333
 JV5333_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8232646168(NAD 83)
 JV5333
 JV5333|---------------------------------------------------------------------|
 JV5333| PID    Reference Object                     Distance      Geod. Az  |
 JV5333|                                                           dddmmss.s |
 JV5333| CB1121 CROW RM 1                            24.000 METERS 00326     |
 JV5333| CB1122 CROW RM 2                            12.638 METERS 17819     |
 JV5333| JV5254 HART 2                              APPROX. 2.2 KM 2462705.8 |
 JV5333|---------------------------------------------------------------------|
 JV5333
 JV5333                          SUPERSEDED SURVEY CONTROL
 JV5333
 JV5333  NAD 83(1986)-  39 15 24.72557(N)    076 21 49.91189(W) AD(       ) 2
 JV5333  NAD 27      -  39 15 24.33540(N)    076 21 51.06690(W) AD(       ) 2
 JV5333
 JV5333.Superseded values are not recommended for survey control.
 JV5333
 JV5333.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5333.See file dsdata.pdf to determine how the superseded data were derived.
 JV5333
 JV5333_MARKER: DS = TRIANGULATION STATION DISK
 JV5333_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV5333_STAMPING: CROW 1961
 JV5333_MARK LOGO: CGS
 JV5333_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5333
 JV5333  HISTORY     - Date     Condition        Report By
 JV5333  HISTORY     - 1961     MONUMENTED       CGS
 JV5333  HISTORY     - 1972     SEE DESCRIPTION  NGS
 JV5333  HISTORY     - 1972     POOR             MDDNR
 JV5333  HISTORY     - 1978     MARK NOT FOUND   MDDNR
 JV5333  HISTORY     - 19940414 MARK NOT FOUND   USPSQD
 JV5333
 JV5333                          STATION DESCRIPTION
 JV5333
 JV5333'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5333'THE STATION IS LOCATED ON THE SOUTHWESTERN END OF MILLER ISLAND
 JV5333'BETWEEN HAWK COVE AND THE CHESAPEAKE BAY.  THE STATION IS A
 JV5333'STANDARD TRIANGULATION DISK AS DESCRIBED IN NOTE 6A, STAMPED CROW
 JV5333'1961, AND PROJECTS ABOUT 4 INCHES ABOVE THE GROUND.
 JV5333'
 JV5333'THE STATION IS 28 FEET EAST OF THE M.H.W.L., AND ABOUT 60 YARDS
 JV5333'NORTH OF A SMALL DRAINAGE FROM THE MARSH TO THE BAY.  ABOUT 10
 JV5333'YARDS SOUTH OF THE DRAINAGE IS THE LARGEST CLUMP OF TREES AND
 JV5333'BUSHES ON THE ISLAND.  THIS CLUMP OF TREES STANDS ON THE
 JV5333'SOUTHERNMOST TIP OF THE ISLAND.
 JV5333'
 JV5333'REFERENCE MARK 1 IS A STANDARD DISK AS DESCRIBED IN NOTE 13A,
 JV5333'STAMPED CROW 1961 NO. 1, AND IS 24 METERS NORTH OF THE STATION.
 JV5333'
 JV5333'REFERENCE MARK 2 IS A STANDARD DISK AS DESCRIBED IN NOTE 13A,
 JV5333'STAMPED CROW 1961 NO.2, AND IS 12.6 METERS SOUTH OF THE STATION.
 JV5333'
 JV5333'TO REACH THE STATION, ONE MUST USE A BOAT.
 JV5333'
 JV5333'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV5333
 JV5333                          STATION RECOVERY (1972)
 JV5333
 JV5333'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (MCG)
 JV5333'THE STATION AND RM2 WERE FOUND UP-ROOTED AND LYING ON THE BEACH.
 JV5333'RM1 WAS FOUND LEANING AND COULD POSSIBLY BE OUT OF POSITION.  IT
 JV5333'IS A CONCRETE FILLED DRAIN TILE AND PROTRUDES 6 INCHES ABOVE THE
 JV5333'SAND ON THE BEACH.
 JV5333'
 JV5333'BOATS TO REACH MILLER ISLAND CAN BE RENTED IN THE CUCKHOLD POINT AREA.
 JV5333
 JV5333                          STATION RECOVERY (1972)
 JV5333
 JV5333'RECOVERY NOTE BY MD DEPT OF NAT RES 1972 (GEH)
 JV5333'CROW 1961 POOR
 JV5333'
 JV5333'MARK IS LEANING AT A SHARP ANGLE AND IS AT HW LINE ON SHORE.  RMS
 JV5333'WERE SEARCHED FOR BUT NOT RECOVERED.  THE DESCRIPTION SHOULD BE
 JV5333'CHANGED SINCE THE CLUMP OF TREES AND DRAINAGE NO LONGER EXIST.
 JV5333
 JV5333                          STATION RECOVERY (1978)
 JV5333
 JV5333'RECOVERY NOTE BY MD DEPT OF NAT RES 1978 (GEH)
 JV5333'CROW 1961 PREVIOUSLY REPTD. DESTROYED.
 JV5333'
 JV5333'CROW 1961 NO. 1 DESTROYED.
 JV5333'
 JV5333'CROW 1961 NO. 2 PREVIOUSLY REPTD. DESTROYED.
 JV5333'
 JV5333'THE TILE WAS FOUND COMPLETELY WASHED OUT AND LAYING ON ITS SIDE.
 JV5333
 JV5333                          STATION RECOVERY (1994)
 JV5333
 JV5333'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5333'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6651 ***********************************************************************
 JV6651  CBN         -  This is a Cooperative Base Network Control Station.
 JV6651  DESIGNATION -  CROWN
 JV6651  PID         -  JV6651
 JV6651  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6651  COUNTRY     -  US
 JV6651  USGS QUAD   -  ROUND BAY (2016)
 JV6651
 JV6651                         *CURRENT SURVEY CONTROL
 JV6651  ______________________________________________________________________
 JV6651* NAD 83(2011) POSITION- 39 01 16.77404(N) 076 36 02.46063(W)   ADJUSTED
 JV6651* NAD 83(2011) ELLIP HT-     8.273 (meters)        (06/27/12)   ADJUSTED
 JV6651* NAD 83(2011) EPOCH   -  2010.00
 JV6651* NAVD 88 ORTHO HEIGHT -    41.295 (meters)      135.48  (feet) ADJUSTED
 JV6651  ______________________________________________________________________
 JV6651  GEOID HEIGHT    -        -33.014 (meters)                     GEOID18
 JV6651  NAD 83(2011) X  -  1,149,839.245 (meters)                     COMP
 JV6651  NAD 83(2011) Y  - -4,826,775.372 (meters)                     COMP
 JV6651  NAD 83(2011) Z  -  3,994,161.874 (meters)                     COMP
 JV6651  LAPLACE CORR    -         -5.30  (seconds)                    DEFLEC18
 JV6651  DYNAMIC HEIGHT  -         41.272 (meters)      135.41  (feet) COMP
 JV6651  MODELED GRAVITY -    980,075.1   (mgal)                       NAVD 88
 JV6651
 JV6651  VERT ORDER      -  SECOND    CLASS I
 JV6651
 JV6651  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6651  Standards:
 JV6651         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6651            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6651  -------------------------------------------------------------------
 JV6651  NETWORK    0.33   0.73           0.15   0.12   0.37     -0.06812006
 JV6651  -------------------------------------------------------------------
 JV6651  Click here for local accuracies and other accuracy information.
 JV6651
 JV6651.The horizontal coordinates were established by GPS observations
 JV6651.and adjusted by the National Geodetic Survey in June 2012.
 JV6651
 JV6651.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6651.been affixed to the stable North American tectonic plate. See 
 JV6651.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6651
 JV6651.The horizontal coordinates are valid at the epoch date displayed above
 JV6651.which is a decimal equivalence of Year/Month/Day.
 JV6651
 JV6651.The orthometric height was determined by differential leveling and
 JV6651.adjusted by the NATIONAL GEODETIC SURVEY
 JV6651.in July 2002.
 JV6651
 JV6651.No vertical observational check was made to the station.
 JV6651
 JV6651.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6651.GEOID18 height accuracy estimate available here.
 JV6651
 JV6651.Click photographs - Photos may exist for this station.
 JV6651
 JV6651.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6651
 JV6651.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6651
 JV6651.The ellipsoidal height was determined by GPS observations
 JV6651.and is referenced to NAD 83.
 JV6651
 JV6651.The dynamic height is computed by dividing the NAVD 88
 JV6651.geopotential number by the normal gravity value computed on the
 JV6651.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6651.degrees latitude (g = 980.6199 gals.).
 JV6651
 JV6651.The modeled gravity was interpolated from observed gravity values.
 JV6651
 JV6651. The following values were computed from the NAD 83(2011) position.
 JV6651
 JV6651;                    North         East     Units Scale Factor Converg.
 JV6651;SPC MD       -   150,449.259   434,579.232   MT  0.99995306   +0 15 02.2
 JV6651;SPC MD       -   493,598.94  1,425,782.03   sFT  0.99995306   +0 15 02.2
 JV6651;UTM  18      - 4,320,362.021   361,431.849   MT  0.99983643   -1 00 28.7
 JV6651
 JV6651!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6651!SPC MD       -   0.99999870  x   0.99995306  =   0.99995176
 JV6651!UTM  18      -   0.99999870  x   0.99983643  =   0.99983513
 JV6651
 JV6651_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6143120362(NAD 83)
 JV6651
 JV6651                          SUPERSEDED SURVEY CONTROL
 JV6651
 JV6651  NAD 83(2007)-  39 01 16.77416(N)    076 36 02.46138(W) AD(2002.00) 0
 JV6651  ELLIP H (02/10/07)    8.307  (m)                       GP(2002.00)    
 JV6651  ELLIP H (02/12/02)    8.309  (m)                       GP(       ) 4 1
 JV6651  ELLIP H (12/03/93)    8.260  (m)                       GP(       ) 4 1
 JV6651  NAD 83(1991)-  39 01 16.77409(N)    076 36 02.46107(W) AD(       ) B
 JV6651  ELLIP H (10/23/91)    8.266  (m)                       GP(       ) 4 1
 JV6651  NAVD 88              41.32   (m)          135.6    (f) LEVELING    3  
 JV6651  NAVD 88 (08/10/94)   41.316  (m)          135.55   (f) SUPERSEDED  2 1
 JV6651  NGVD 29              41.56   (m)          136.4    (f) LEVELING    3  
 JV6651  NGVD 29              41.55   (m)          136.3    (f) LEVELING    3  
 JV6651
 JV6651.Superseded values are not recommended for survey control.
 JV6651
 JV6651.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6651.See file dsdata.pdf to determine how the superseded data were derived.
 JV6651
 JV6651_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6651_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6651_STAMPING: CROWN 1990
 JV6651_MARK LOGO: NGS
 JV6651_PROJECTION: FLUSH
 JV6651_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6651_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6651+STABILITY: SURFACE MOTION
 JV6651_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6651+SATELLITE: SATELLITE OBSERVATIONS - May 27, 2025
 JV6651
 JV6651  HISTORY     - Date     Condition        Report By
 JV6651  HISTORY     - 19900101 MONUMENTED       NGS
 JV6651  HISTORY     - 19901207 GOOD             NGS
 JV6651  HISTORY     - 19910219 GOOD
 JV6651  HISTORY     - 19930511 GOOD             NOS
 JV6651  HISTORY     - 19970407 GOOD             DMW
 JV6651  HISTORY     - 19991213 GOOD             GEOMET
 JV6651  HISTORY     - 20000405 GOOD             MDSHA
 JV6651  HISTORY     - 20010621 GOOD             DMW
 JV6651  HISTORY     - 20020226 GOOD             NGS
 JV6651  HISTORY     - 20051215 GOOD             USPSQD
 JV6651  HISTORY     - 20070323 GOOD             INDIV
 JV6651  HISTORY     - 20110619 GOOD             INDIV
 JV6651  HISTORY     - 20120711 GOOD             MDSHA
 JV6651  HISTORY     - 20250527 GOOD             MDSHA
 JV6651
 JV6651                          STATION DESCRIPTION
 JV6651
 JV6651'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JV6651'THE STATION IS LOCATED ABOUT 0.56 KM (0.35 MI) NORTHWEST OF ANNAPOLIS,
 JV6651'15.9 KM (9.9 MI) SOUTH OF GLEN BURNIE, 8.4 KM (5.2 MI) EAST OF
 JV6651'CROFTON AND ON THE GROUNDS OF CROWNSVILLE HOSPITAL CENTER. THE
 JV6651'PROPERTY IS OWNED BY THE STATE OF MARYLAND (DEPARTMENT OF GENERAL
 JV6651'SERVICES).
 JV6651'TO REACH THE STATION FROM THE POST OFFICE IN CROWNSVILLE ON STATE
 JV6651'HIGHWAY 178, GO SOUTHEAST ON STATE HIGHWAY 178 FOR 0.56 KM (0.35 MI)
 JV6651'TO CROWNSVILLE ROAD.  TURN RIGHT AND GO SOUTH FOR 0.56 KM (0.35 MI) TO
 JV6651'MARBURY DRIVE. TURN RIGHT AND GO WEST FOR 0.08 KM (0.05 MI) TO THE
 JV6651'STATION ON THE RIGHT ON TOP OF A HILL IN THE CENTER FIELD OF A BALL
 JV6651'DIAMOND.
 JV6651'THE STATION MARK IS SET IN THE TOP OF A 0.23 M (0.75 FT) ROUND
 JV6651'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT
 JV6651'IS 27.1 M (88.9 FT) EAST NORTHEAST OF POLE NUMBER 54, 39.3 M
 JV6651'(128.9 FT) NORTHEAST OF A FIRE HYDRANT AND   29.3 M (96.1 FT) NORTH
 JV6651'OF THE CENTERLINE OF MARBURY DRIVE.
 JV6651
 JV6651                          STATION RECOVERY (1990)
 JV6651
 JV6651'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6651'STATION IS LOCATED ABOUT 10 KM (6.2 MI) NORTHWEST OF ANNAPOLIS, 1 KM
 JV6651'(0.6 MI) SOUTHEAST OF CROWNSVILLE, ON THE GROUNDS OF CROWNSVILLE
 JV6651'HOSPITAL CENTER, AND AT A BASEBALL DIAMOND, IN THE CENTERFIELD AREA.
 JV6651'OWNERSHIP--STATE OF MARYLAND (DEPARTMENT OF GENERAL SERVICES).
 JV6651'CONTACT RICK PENDLETON, MAINTAINANCE OFFICE, (301-987-6200) IN
 JV6651'ADVANCE SO SECURITY CAN BE NOTIFIED.
 JV6651'TO REACH FROM THE JUNCTION OF US HIGHWAYS 50, 301 AND STATE HIGHWAYS
 JV6651'178 AND 450 (ABOUT 3 KM (1.9 MI) WEST OF ANNAPOLIS), GO NORTHWEST ON
 JV6651'HIGHWAYS 178 AND 450 FOR 0.47 KM (0.29 MI) TO THE JUNCTION OF HIGHWAY
 JV6651'450 ON THE LEFT.  CONTINUE AHEAD ON HIGHWAY 178 FOR 6.65 KM
 JV6651'(4.13 MI) TO A CROSSROAD AT STOP LIGHT.  TURN SHARP LEFT, SOUTHERLY,
 JV6651'ON CROWNSVILLE ROAD, THROUGH THE HOSPITAL COMPLEX FOR 0.55 KM
 JV6651'(0.34 MI) TO A CROSSROAD.  TURN RIGHT, SOUTHWEST, ON MARBURY DRIVE
 JV6651'FOR 0.10 KM (0.06 MI) TO THE END OF AN EMBANKMENT ON THE RIGHT AND
 JV6651'STATION ON TOP OF THE EMBANKMENT.
 JV6651'STATION MARK IS SET IN THE TOP OF A 20-CM ROUND CONCRETE POST FLUSH
 JV6651'WITH THE GROUND.  IT IS 29.3 M (96.1 FT) NORTHEAST OF, AND 4 M
 JV6651'(13.1 FT) HIGHER THAN THE ROAD CENTER, 39.2 M (128.6 FT)
 JV6651'NORTH-NORTHWEST OF A HYDRANT, 27.2 M (89.2 FT) EAST-SOUTHEAST OF
 JV6651'UTILITY POLE 54 AT BOTTOM OF SLOPE, 5 M (16.4 FT) EAST OF TOP OF
 JV6651'BANK, AND 4.8 M (15.7 FT) WEST-NORTHWEST OF THE EXTENDED CENTER OF A
 JV6651'SIDEWALK ACROSS ROAD LEADING SOUTHWEST.
 JV6651'DESCRIBED BY G.R.HEID.
 JV6651
 JV6651                          STATION RECOVERY (1991)
 JV6651
 JV6651'RECOVERED 1991
 JV6651'RECOVERED IN GOOD CONDITION.
 JV6651
 JV6651                          STATION RECOVERY (1993)
 JV6651
 JV6651'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1993
 JV6651'RECOVERED IN GOOD CONDITION.
 JV6651
 JV6651                          STATION RECOVERY (1997)
 JV6651
 JV6651'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6651'RECOVERED AS DESCRIBED.
 JV6651
 JV6651                          STATION RECOVERY (1999)
 JV6651
 JV6651'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (DAR)
 JV6651'THE STATION IS LOCATED IN CROWNSVILLE, MARYLAND ON THE GROUNDS NF THE
 JV6651'CROWNSVILLE HOSPITAL CENTER.  CROWNVILLE HOSPITAL IS THE OWNERSHIP.
 JV6651'THE TO REACH AS DESCRIBED BY NOS.  THE STATION WAS FOUND WITH EXISTING
 JV6651'DESCRIPTION AND VISUALLY.  MARK IS SUITABLE FOR GPS USE. GET THERE BY
 JV6651'CAR.  FLUSH WITH GROUND.  MAY HOLD WELL, BUT SUBJECT TO GROUND
 JV6651'MOVEMENT.  DESCRIBED BY GEOMETRICS.
 JV6651
 JV6651                          STATION RECOVERY (2000)
 JV6651
 JV6651'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6651'RECOVERED AS DESCRIBED.
 JV6651
 JV6651                          STATION RECOVERY (2001)
 JV6651
 JV6651'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV6651'RECOVERED IN GOOD CONDITION.
 JV6651
 JV6651                          STATION RECOVERY (2002)
 JV6651
 JV6651'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (JMW)
 JV6651'RECOVERED AS DESCRIBED.
 JV6651
 JV6651                          STATION RECOVERY (2005)
 JV6651
 JV6651'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6651'RECOVERED IN GOOD CONDITION.
 JV6651
 JV6651                          STATION RECOVERY (2007)
 JV6651
 JV6651'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (JFS)
 JV6651'RECOVERED AND USED WITH NSRS2007 ADJUSTMENT.
 JV6651
 JV6651                          STATION RECOVERY (2011)
 JV6651
 JV6651'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 JV6651'RECOVERED AS DESCRIBED, DESCRIPTION IS ADEQUATE. USED FOR GPS (JFS)
 JV6651
 JV6651                          STATION RECOVERY (2012)
 JV6651
 JV6651'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2012
 JV6651'RECOVERED IN GOOD CONDITION.
 JV6651
 JV6651                          STATION RECOVERY (2025)
 JV6651
 JV6651'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 JV6651'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5798 ***********************************************************************
 JV5798  DESIGNATION -  CROWNSVILLE
 JV5798  PID         -  JV5798
 JV5798  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5798  COUNTRY     -  US
 JV5798  USGS QUAD   -  ROUND BAY (2016)
 JV5798
 JV5798                         *CURRENT SURVEY CONTROL
 JV5798  ______________________________________________________________________
 JV5798* NAD 83(1991) POSITION- 39 01 34.10094(N) 076 35 55.90058(W)   ADJUSTED
 JV5798* NAVD 88 ORTHO HEIGHT -    20.    (meters)       66.    (feet) SCALED
 JV5798  ______________________________________________________________________
 JV5798  GEOID HEIGHT    -        -33.013 (meters)                     GEOID18
 JV5798  LAPLACE CORR    -         -5.38  (seconds)                    DEFLEC18
 JV5798  HORZ ORDER      -  FIRST
 JV5798
 JV5798.The horizontal coordinates were established by classical geodetic methods
 JV5798.and adjusted by the National Geodetic Survey in January 1992.
 JV5798
 JV5798.The orthometric height was scaled from a topographic map.
 JV5798
 JV5798.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5798.GEOID18 height accuracy estimate available here.
 JV5798
 JV5798.Click photographs - Photos may exist for this station.
 JV5798
 JV5798.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5798
 JV5798. The following values were computed from the NAD 83(1991) position.
 JV5798
 JV5798;                    North         East     Units Scale Factor Converg.
 JV5798;SPC MD       -   150,984.243   434,734.682   MT  0.99995328   +0 15 06.4
 JV5798;SPC MD       -   495,354.14  1,426,292.04   sFT  0.99995328   +0 15 06.4
 JV5798;UTM  18      - 4,320,893.399   361,598.993   MT  0.99983586   -1 00 24.9
 JV5798
 JV5798!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5798!SPC MD       -   1.00000208  x   0.99995328  =   0.99995536
 JV5798!UTM  18      -   1.00000208  x   0.99983586  =   0.99983794
 JV5798
 JV5798:                Primary Azimuth Mark                     Grid Az
 JV5798:SPC MD       -  WORKS                                    144 51 32.4
 JV5798:UTM  18      -  WORKS                                    146 07 03.7
 JV5798
 JV5798_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6159820893(NAD 83)
 JV5798
 JV5798|---------------------------------------------------------------------|
 JV5798| PID    Reference Object                     Distance      Geod. Az  |
 JV5798|                                                           dddmmss.s |
 JV5798| CB1123 CROWNSVILLE RM 1                     41.712 METERS 06119     |
 JV5798| HV1166 WORKS                               APPROX. 5.4 KM 1450638.8 |
 JV5798| CB1124 CROWNSVILLE RM 2                     38.021 METERS 18834     |
 JV5798| JV5797 CROWNSVILLE TALL RED BRICK STK      372.281 METERS 23750     |
 JV5798| CB1125 CROWNSVILLE RM 3 AZIMUTH                           2850701.5 |
 JV5798| CB1126 CROWNSVILLE RM 4                     12.000 METERS 35949     |
 JV5798|---------------------------------------------------------------------|
 JV5798
 JV5798                          SUPERSEDED SURVEY CONTROL
 JV5798
 JV5798  NAD 83(1986)-  39 01 34.09780(N)    076 35 55.91112(W) AD(       ) 1
 JV5798  NAD 27      -  39 01 33.70085(N)    076 35 57.03892(W) AD(       ) 1
 JV5798
 JV5798.Superseded values are not recommended for survey control.
 JV5798
 JV5798.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5798.See file dsdata.pdf to determine how the superseded data were derived.
 JV5798
 JV5798_MARKER: DS = TRIANGULATION STATION DISK
 JV5798_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5798
 JV5798  HISTORY     - Date     Condition        Report By
 JV5798  HISTORY     - 1933     MONUMENTED       CGS
 JV5798  HISTORY     - 1943     GOOD             CGS
 JV5798  HISTORY     - 1948     GOOD             LOCENG
 JV5798  HISTORY     - 1961     GOOD             MDDT
 JV5798  HISTORY     - 1965     GOOD             MDDT
 JV5798
 JV5798                          STATION DESCRIPTION
 JV5798
 JV5798'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5798'AT CROWNSVILLE ELECTRIC RAILROAD STATION ON THE PROPERTY OWNED BY
 JV5798'MR. W.G. WILLIAMS AND RENTED BY MR. ALLEN T. RUSSELL.
 JV5798'
 JV5798'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5798'DISKS SET IN CONCRETE.
 JV5798'
 JV5798'REFERENCE MARK NO.2 IS 124.74 FEET W OF THE STATION AND ON THE
 JV5798'E SIDE OF THE ROAD AT THE TOP OF THE CUT OF THE ROAD.
 JV5798'
 JV5798'REFERENCE MARK NO.1 IS 136.85 FEET S OF THE STATION AT THE N
 JV5798'EDGE OF THE BRUSH ON THE N SIDE OF THE HILL.
 JV5798'
 JV5798'REFERENCE MARK NO.3 IS 0.25 MILE N OF THE STATION, 20 FEET W
 JV5798'OF THE CENTER LINE OF THE ROAD, 6 FEET SW OF A LARGE TREE ON THE
 JV5798'W SIDE OF THE ROAD, OPPOSITE THE FREIGHT LOADING STATION.  THE
 JV5798'MARK IS VISIBLE FROM THE GROUND AT THE STATION.
 JV5798'
 JV5798'TO REACH GO N ON THE HIGHWAY TO BALTIMORE FROM ITS INTERSECTION
 JV5798'WITH ROUTE 50, 3-1/2 MILES E OF ANNAPOLIS FOR 3.5 MILES TO THE
 JV5798'STATION WHICH IS ON TOP OF THE HILL ON THE E SIDE OF THE
 JV5798'ROAD.  STATION IS 200 FEET E OF THE CENTER LINE OF THE HIGHWAY
 JV5798'ON THE HIGHEST POINT OF THE KNOLL.
 JV5798'
 JV5798'HEIGHT OF LIGHT ABOVE STATION MARK 33 METERS.
 JV5798
 JV5798                          STATION RECOVERY (1943)
 JV5798
 JV5798'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 JV5798'RECOVERED AS DESCRIBED.  DESCRIPTION ADEQUATE EXCEPT FOR THE
 JV5798'FOLLOWING CORRECTIONS AND ADDITIONS--
 JV5798'
 JV5798'MARK IS NOW LOCATED IN THE YARD OF W.J. SIWAKS HOUSE, 25 FEET S
 JV5798'OF THE NE CORNER, 15.9 FEET E OF THE S CORNER, AND 26.5 FEET W
 JV5798'OF THE CENTER OF THE WELL.
 JV5798
 JV5798                          STATION RECOVERY (1948)
 JV5798
 JV5798'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1948 (DKS)
 JV5798'ALL MARKS RECOVERED AS DESCRIBED.  DESCRIPTION SHOULD READ--
 JV5798'
 JV5798'AT CROWNSVILLE, ON STATE HIGHWAY 178, SEVERAL HUNDRED FEET SOUTH
 JV5798'OF POST OFFICE (ABANDONED WASHINGTON, BALTIMORE AND ANNAPOLIS
 JV5798'R.R. STATION) WHICH POST OFFICE IS LOCATED AT THE ENTRANCE TO
 JV5798'CROWNSVILLE STATE HOSPITAL.  THE MARK IS LOCATED IN THE YARD OF
 JV5798'W. J. SIWAKS WHICH IS ON THE TOP OF THE HIGHEST HILL, ABOUT 200
 JV5798'FEET EAST OF THE CENTER LINE OF THE HIGHWAY.
 JV5798'
 JV5798'REST OF DESCRIPTION IS O.K., BUT TO SEE R.M. NO. 3 WOULD REQUIRE
 JV5798'A LOT OF CUTTING.
 JV5798'
 JV5798'TALLER OF 2 RED BRICK STACKS CAN BE SEEN FROM STATION AND COULD
 JV5798'BE USED AS AZIMUTH MARK.
 JV5798'
 JV5798'THE AZIMUTH MARK FOR STATION NOW PROTRUDES ABOUT 2 FEET ABOVE
 JV5798'GROUND BUT APPEARS TO BE IN GOOD SOLID CONDITION.  THE MARK CAN NOT
 JV5798'BE SEEN FROM THE GROUND FROM THE TRIANGULATION STATION.
 JV5798
 JV5798                          STATION RECOVERY (1961)
 JV5798
 JV5798'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1961 (CWP)
 JV5798'STATION AND REFERENCE MARK NO. 2 WERE RECOVERED AS DESCRIBED AND
 JV5798'FOUND TO BE IN GOOD CONDITION.  REFERENCE MARK NO. 1 WAS NOT
 JV5798'SEARCHED FOR BUT IS BELIEVED TO BE INTACT.  THE AZIMUTH MARK
 JV5798'(REFERENCE MARK NO. 3) HAS BEEN DESTROYED AND A NEW AZIMUTH WAS
 JV5798'SET AT THIS TIME.
 JV5798'
 JV5798'STATION IS LOCATED AT CROWNSVILLE, 6 MILES NORTHWEST OF ANNAPOLIS
 JV5798'AND ON PROPERTY OF MR. W. J. SIWAKS.  IT IS 41.0 FEET SOUTH OF
 JV5798'THE SOUTHEAST CORNER OF MR. SIWAKS HOUSE AND 23.5 FEET SOUTHWEST
 JV5798'OF THE SOUTHWEST CORNER OF A 6X6 FOOT CONCRETE WELL COVER.  MARK
 JV5798'IS A STANDARD DISK SET IN CONCRETE PROJECTING 8 INCHES AND
 JV5798'STAMPED CROWNSVILLE 1933.
 JV5798'
 JV5798'REFERENCE MARK NO. 2 IS 125 FEET SOUTH OF THE STATION, 65 FEET
 JV5798'SOUTHWEST OF THE GRAVEL ENTRANCE, 30.1 FEET NORTHWEST OF THE
 JV5798'GARAGE ENTRANCE AND 30 FEET NORTHEAST OF THE CENTERLINE OF STATE
 JV5798'HIGHWAY 178.  MARK IS A STANDARD DISK SET IN CONCRETE PROJECTING
 JV5798'1 FOOT AND STAMPED CROWNSVILLE NO 2 1933.
 JV5798'
 JV5798'AZIMUTH MARK IS LOCATED ABOUT 1000 FEET WEST OF THE STATION, AT
 JV5798'THE SUPERINTENDENTS RESIDENCE OF THE CROWNSVILLE HOSPITAL.  IT IS
 JV5798'76 FEET NORTHWEST OF THE FRONT ENTRANCE OF THE HOUSE, 56 FEET
 JV5798'NORTH OF THE NORTHWEST CORNER OF THE HOUSE, 31.4 FEET WEST OF A
 JV5798'PK NAIL IN A 20 INCH ELM TREE AND 29.5 FEET SOUTH OF A PK NAIL IN
 JV5798'A 24 INCH ELM TREE.  MARK IS A STANDARD MBCS DISK SET IN A
 JV5798'CONCRETE POST, WHICH IS SET FLUSH, AND STAMPED CROWNSVILLE AZ
 JV5798'1961.
 JV5798'
 JV5798'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 178
 JV5798'AND 3 (DORRS CORNER) GO SOUTHEAST ON HIGHWAY 178 FOR 3.8 MILES
 JV5798'TO THE ENTRANCE TO CROWNSVILLE STATE HOSPITAL ON THE RIGHT AND
 JV5798'THE AZIMUTH MARK AS DESCRIBED, CONTINUE AHEAD FOR 0.1 MILE TO A
 JV5798'DIRT LANE LEFT AND THE STATION AS DESCRIBED.
 JV5798'
 JV5798'THE BEARING TO THE AZIMUTH MARK IS S 33 DEG 11 MIN W
 JV5798'AS DETERMINED BY 12 POSITIONS ON POLARIS.
 JV5798
 JV5798                          STATION RECOVERY (1965)
 JV5798
 JV5798'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1965
 JV5798'THE STATION, REFERENCE MARK 1 AND REFERENCE MARK 2 RECOVERED IN
 JV5798'GOOD CONDITION BY STATE ROADS COMMISSION OF MARYLAND.  THE AZIMUTH
 JV5798'MARK (REFERENCE MARK 3) WAS DESTROYED PREVIOUS TO THIS
 JV5798'RECOVERY.  REFERENCE MARK 2 WAS DESTROYED AFTER REFERENCE MARK
 JV5798'4 WAS ESTABLISHED.  A DESCRIPTION OF REFERENCE MARK 4 FOLLOWS--
 JV5798'
 JV5798'CROWNSVILLE RM 4 IS LOCATED 39.37 FT. NORTHEAST OF THE STATION
 JV5798'NEAR THE NORTHEAST CORNER OF THE FRAME DWELLING, 27.4 FT. NORTH
 JV5798'OF THE NORTH CORNER OF THE CONCRETE WELL COVER, 17.2 FT. NORTHEAST
 JV5798'OF THE NORTHEAST EDGE OF THE CELLAR ENTRANCE WALL, AND 2.7
 JV5798'FT. SOUTH OF THE NORTHEAST CORNER OF THE FRAME DWELLING.  A
 JV5798'STANDARD DISK SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 JV5798'GROUND STAMPED CROWNSVILLE NO. 4 1965.
 JV5798'
 JV5798'NOTE--NO MENTION WAS MADE OF THE AZIMUTH MARK ESTABLISHED IN 1961.
 JV5798'
 JV5798'LTR STATE R.C. DATED 2/44/66 STATED THAT STATION MARK WAS LOWERED
 JV5798'FLUSH WITH THE GROUND IN ITS ORIGINAL POSITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7071 ***********************************************************************
 JV7071  DESIGNATION -  CROWS RESET
 JV7071  PID         -  JV7071
 JV7071  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7071  COUNTRY     -  US
 JV7071  USGS QUAD   -  BELTSVILLE (2016)
 JV7071
 JV7071                         *CURRENT SURVEY CONTROL
 JV7071  ______________________________________________________________________
 JV7071* NAD 83(1991) POSITION- 39 05 56.64802(N) 076 53 19.13734(W)   ADJUSTED
 JV7071  ______________________________________________________________________
 JV7071  GEOID HEIGHT    -        -32.158 (meters)                     GEOID18
 JV7071  LAPLACE CORR    -         -4.26  (seconds)                    DEFLEC18
 JV7071  HORZ ORDER      -  FIRST
 JV7071
 JV7071.The horizontal coordinates were established by classical geodetic methods
 JV7071.and adjusted by the National Geodetic Survey in January 1992.
 JV7071
 JV7071.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7071.GEOID18 height accuracy estimate available here.
 JV7071
 JV7071.Click photographs - Photos may exist for this station.
 JV7071
 JV7071.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7071
 JV7071. The following values were computed from the NAD 83(1991) position.
 JV7071
 JV7071;                    North         East     Units Scale Factor Converg.
 JV7071;SPC MD       -   159,009.857   409,632.036   MT  0.99995742   +0 04 11.6
 JV7071;SPC MD       -   521,684.84  1,343,934.44   sFT  0.99995742   +0 04 11.6
 JV7071;UTM  18      - 4,329,468.393   336,680.736   MT  0.99992844   -1 11 28.9
 JV7071
 JV7071:                Primary Azimuth Mark                     Grid Az
 JV7071:SPC MD       -  EXTRA                                    139 37 28.9
 JV7071:UTM  18      -  EXTRA                                    140 53 09.4
 JV7071
 JV7071_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3668029468(NAD 83)
 JV7071
 JV7071|---------------------------------------------------------------------|
 JV7071| PID    Reference Object                     Distance      Geod. Az  |
 JV7071|                                                           dddmmss.s |
 JV7071| CB1128 CROWS RM 6                           22.629 METERS 01630     |
 JV7071| JV5880 LAUREL MUN TANK                     APPROX. 2.3 KM 0661017.2 |
 JV7071| JV5885 LAUREL WATER TANK=COGGINS           APPROX. 2.3 KM 0980314.2 |
 JV7071| JV5887 LAUREL SANITORIUM STACK             APPROX. 2.4 KM 0985104.4 |
 JV7071| JV3927 CROWS RM 1                           23.665 METERS 11815     |
 JV7071| JV0884 CROWS RM 4                           29.386 METERS 12021     |
 JV7071| JV5936 EXTRA                               APPROX. 0.6 KM 1394140.5 |
 JV7071| JV5941 LAUREL PATUXENT FILT PLANT TK       APPROX. 1.0 KM 2640620.4 |
 JV7071| CB1127 CROWS RM 5                           24.671 METERS 27453     |
 JV7071| JV0883 CROWS RM 3                           29.511 METERS 33645     |
 JV7071| JV3928 CROWS RM 2                           25.409 METERS 33709     |
 JV7071|---------------------------------------------------------------------|
 JV7071
 JV7071                          SUPERSEDED SURVEY CONTROL
 JV7071
 JV7071  NAD 83(1986)-  39 05 56.64683(N)    076 53 19.14720(W) AD(       ) 1
 JV7071  NAD 27      -  39 05 56.25635(N)    076 53 20.24455(W) AD(       ) 1
 JV7071
 JV7071.Superseded values are not recommended for survey control.
 JV7071
 JV7071.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7071.See file dsdata.pdf to determine how the superseded data were derived.
 JV7071
 JV7071_MARKER: DS = TRIANGULATION STATION DISK
 JV7071_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7071_STAMPING: CROWS 1957 1969
 JV7071_MARK LOGO: CGS
 JV7071_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7071+STABILITY: SURFACE MOTION
 JV7071
 JV7071  HISTORY     - Date     Condition        Report By
 JV7071  HISTORY     - 1970     MONUMENTED       NGS
 JV7071
 JV7071                          STATION DESCRIPTION
 JV7071
 JV7071'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV7071'THE UNDERGROUND MARK AND EXTRA 1957 WERE RECOVERED.  THE STATION
 JV7071'MARK AND REFERENCE MARKS 3 AND 4 WERE DESTROYED BY CONSTRUCTION
 JV7071'IN THE AREA.  A NEW STATION MARK WAS ESTABLISHED OVER THE
 JV7071'UNDERGROUND MARK AND REFERENCE MARKS 5 AND 6 WERE ESTABLISHED.
 JV7071'DUE TO THE ABOVE CHANGES A NEW DESCRIPTION FOLLOWS.
 JV7071'
 JV7071'THE STATION IS LOCATED ABOUT 2 MILES WEST OF LAUREL, 1-1/4 MILE
 JV7071'EAST OF THE PRINCE GEORGES-MONTGOMERY COUNTY LINE, AND ON THE
 JV7071'RIGHT-OF-WAY AT THE INTERCHANGE OF INTERSTATE 95 AND STATE
 JV7071'HIGHWAY 198.
 JV7071'
 JV7071'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 1 AND STATE
 JV7071'HIGHWAY 198 IN LAUREL, GO WESTERLY ON STATE HIGHWAY 198 FOR 2.3
 JV7071'MILES TO A DIRT ROAD ON THE LEFT.  TURN LEFT AND GO SOUTH 0.05
 JV7071'MILE TO THE STATION ABOUT 100 FEET SOUTH OF THE HIGHEST POINT.  TO
 JV7071'REACH THE STATION EXTRA 1957, CONTINUE SOUTHERLY ON THE DIRT
 JV7071'ROAD FOR 0.3 MILE TO THE JUNCTION OF CONTEE ROAD AND CHERRY
 JV7071'LANE, CONTINUE AHEAD ON CONTEE ROAD FOR 0.05 MILE TO THE STATION
 JV7071'ON THE RIGHT.
 JV7071'
 JV7071'STATION MARK IS A STANDARD DISK, STAMPED CROWS 1957 1969, SET
 JV7071'IN THE TOP OF AN IRREGULAR MASS OF CONCRETE, 2-1/2 FEET IN
 JV7071'DIAMETER, THAT IS 6 INCHES BELOW THE SURFACE OF THE GROUND.  IT
 JV7071'IS 83.4 FEET SOUTH OF THE EASTERNMOST OAK TREE OF THREE THAT
 JV7071'ARE 2 FEET IN DIAMETER, 72.5 FEET SOUTH-SOUTHEAST OF A WITNESS
 JV7071'POST AT REFERENCE MARK 6, AND 4.6 FEET SOUTHEAST OF A WITNESS
 JV7071'POST.
 JV7071'
 JV7071'REFERENCE MARK 5 IS A STANDARD DISK, STAMPED CROWS 1957 NO 5 1970,
 JV7071'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV7071'THAT IS 4 INCHES BELOW THE SURFACE OF THE GROUND.  IT IS 132 FEET
 JV7071'SOUTHWEST OF THE EASTERNMOST OAK TREE OF THREE THAT ARE 2 FEET IN
 JV7071'DIAMETER, 76 FEET WEST-SOUTHWEST OF A WITNESS POST AT THE
 JV7071'STATION, AND ABOUT 2 FEET LOWER THAN THE STATION.
 JV7071'
 JV7071'REFERENCE MARK 6 IS A STANDARD DISK, STAMPED CROWS 1957 NO 6
 JV7071'1970, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 JV7071'DIAMETER, THAT IS 3 INCHES BELOW THE SURFACE OF THE GROUND.  IT
 JV7071'IS 70 FEET NORTH-NORTHWEST OF THE WITNESS POST AT THE STATION,
 JV7071'12 FEET SOUTH OF THE EASTERNMOST OAK TREE OF THREE THAT ARE 2
 JV7071'FEET IN DIAMETER.  IT IS ABOUT 2 FEET HIGHER THAN THE STATION.
 JV7071'
 JV7071'EXTRA 1957 IS A TRAVERSE STATION DISK, STAMPED EXTRA 1957, SET
 JV7071'IN TOP OF 8-INCH, SQUARE, CONCRETE POST.  IT IS FLUSH WITH THE
 JV7071'SURFACE OF THE GROUND.  IT IS 18 FEET WEST OF THE CENTERLINE OF
 JV7071'CONTEE ROAD, 4.7 FEET WEST OF TELEPHONE POLE NUMBER 25, AND 2.1
 JV7071'FEET WEST OF A WOOD WITNESS POST.
 JV7071'
 JV7071'DUE TO EXTENSIVE CONSTRUCTION IN THE AREA, THE DESCRIPTION TO
 JV7071'REACH THE STATION AND LOCAL LANDMARKS ARE SUBJECT TO CHANGE.
 JV7071'
 JV7071'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN --
 JV7071'2 MILES WEST OF LAUREL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7205 ***********************************************************************
 JV7205  DESIGNATION -  CRYSTAL
 JV7205  PID         -  JV7205
 JV7205  STATE/COUNTY-  MD/WASHINGTON
 JV7205  COUNTRY     -  US
 JV7205  USGS QUAD   -  MYERSVILLE (2016)
 JV7205
 JV7205                         *CURRENT SURVEY CONTROL
 JV7205  ______________________________________________________________________
 JV7205* NAD 83(2011) POSITION- 39 33 38.99772(N) 077 37 08.18092(W)   ADJUSTED
 JV7205* NAD 83(2011) ELLIP HT-   202.751 (meters)        (06/27/12)   ADJUSTED
 JV7205* NAD 83(2011) EPOCH   -  2010.00
 JV7205* NAVD 88 ORTHO HEIGHT -   236.3   (meters)      775.    (feet) GPS OBS
 JV7205  ______________________________________________________________________
 JV7205  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7205  GEOID HEIGHT    -        -33.890 (meters)                     GEOID93
 JV7205  GEOID HEIGHT    -        -33.593 (meters)                     GEOID18
 JV7205  NAD 83(2011) X  -  1,055,780.620 (meters)                     COMP
 JV7205  NAD 83(2011) Y  - -4,809,545.445 (meters)                     COMP
 JV7205  NAD 83(2011) Z  -  4,040,641.913 (meters)                     COMP
 JV7205  LAPLACE CORR    -         12.31  (seconds)                    DEFLEC18
 JV7205
 JV7205  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7205  Standards:
 JV7205         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7205            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7205  -------------------------------------------------------------------
 JV7205  NETWORK    2.14   2.69           0.92   0.81   1.37      0.21820233
 JV7205  -------------------------------------------------------------------
 JV7205  Click here for local accuracies and other accuracy information.
 JV7205
 JV7205.The horizontal coordinates were established by GPS observations
 JV7205.and adjusted by the National Geodetic Survey in June 2012.
 JV7205
 JV7205.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7205.been affixed to the stable North American tectonic plate. See 
 JV7205.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7205
 JV7205.The horizontal coordinates are valid at the epoch date displayed above
 JV7205.which is a decimal equivalence of Year/Month/Day.
 JV7205
 JV7205.The orthometric height was determined by GPS observations and a
 JV7205.high-resolution geoid model.
 JV7205
 JV7205.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7205.GEOID18 height accuracy estimate available here.
 JV7205
 JV7205.Click photographs - Photos may exist for this station.
 JV7205
 JV7205.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7205
 JV7205.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7205
 JV7205.The ellipsoidal height was determined by GPS observations
 JV7205.and is referenced to NAD 83.
 JV7205
 JV7205. The following values were computed from the NAD 83(2011) position.
 JV7205
 JV7205;                    North         East     Units Scale Factor Converg.
 JV7205;SPC MD       -   210,449.321   346,808.642   MT  1.00002127   -0 23 18.5
 JV7205;SPC MD       -   690,449.15  1,137,821.35   sFT  1.00002127   -0 23 18.5
 JV7205;UTM  18      - 4,382,292.041   275,007.661   MT  1.00022329   -1 40 07.3
 JV7205
 JV7205!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7205!SPC MD       -   0.99996819  x   1.00002127  =   0.99998946
 JV7205!UTM  18      -   0.99996819  x   1.00022329  =   1.00019148
 JV7205
 JV7205_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7500782292(NAD 83)
 JV7205
 JV7205                          SUPERSEDED SURVEY CONTROL
 JV7205
 JV7205  NAD 83(2007)-  39 33 38.99829(N)    077 37 08.18122(W) AD(2002.00) 0
 JV7205  ELLIP H (02/10/07)  202.763  (m)                       GP(2002.00)    
 JV7205  ELLIP H (08/30/02)  202.764  (m)                       GP(       ) 4 2
 JV7205  NAD 83(1991)-  39 33 38.99877(N)    077 37 08.18080(W) AD(       ) 1
 JV7205  ELLIP H (02/09/94)  202.698  (m)                       GP(       ) 4 1
 JV7205
 JV7205.Superseded values are not recommended for survey control.
 JV7205
 JV7205.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7205.See file dsdata.pdf to determine how the superseded data were derived.
 JV7205
 JV7205_MARKER: DD = SURVEY DISK
 JV7205_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7205_STAMPING: CRYSTAL 1993
 JV7205_MARK LOGO: MD-021
 JV7205_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7205_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7205+STABILITY: SURFACE MOTION
 JV7205_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7205+SATELLITE: SATELLITE OBSERVATIONS - April 14, 2008
 JV7205
 JV7205  HISTORY     - Date     Condition        Report By
 JV7205  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7205  HISTORY     - 20080208 GOOD             GEOCAC
 JV7205  HISTORY     - 20080414 GOOD             GPSSS
 JV7205
 JV7205                          STATION DESCRIPTION
 JV7205
 JV7205'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7205'FROM FREDERICK, MD, PROCEED WEST ON I-70 AND EXIT AT ROUTE 66 IN
 JV7205'WASHINGTON COUNTY. PROCEED SOUTH ON RTE 66 1.2 MILES (1.9 KM) TO US
 JV7205'RTE 40. TURN LEFT AND PROCEEED 1.7 MILES (2.7 KM) EAST ON RTE 40 TO
 JV7205'CRYSTAL FALLS ROAD. TURN LEFT AND PROCEED NORTH 0.4 MILES (0.6 KM) TO
 JV7205'STATION ON LEFT. STATION IS 15 FEET (4.6 M) WEST OF CENTERLINE OF
 JV7205'CRYSTAL FALLS ROAD AND 52 FEET (15.8 M) SOUTHWEST OF POWER POLE NO.
 JV7205'22 1/2. STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND
 JV7205'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7205
 JV7205                          STATION RECOVERY (2008)
 JV7205
 JV7205'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV7205'THE MARK IS ABOUT 1.5 INCHES BELOW SURFACE AND MAY BE COVERED BY GRASS
 JV7205'AFTER ROADSIDE MOWING.
 JV7205
 JV7205                          STATION RECOVERY (2008)
 JV7205
 JV7205'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (DA)
 JV7205'RECOVERED BY DALE ADAMS OF CLSI
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5443 ***********************************************************************
 JV5443  DESIGNATION -  CUB HILL FIRE TOWER
 JV5443  PID         -  JV5443
 JV5443  STATE/COUNTY-  MD/BALTIMORE
 JV5443  COUNTRY     -  US
 JV5443  USGS QUAD   -  TOWSON (2016)
 JV5443
 JV5443                         *CURRENT SURVEY CONTROL
 JV5443  ______________________________________________________________________
 JV5443* NAD 83(1991) POSITION- 39 24 45.08408(N) 076 31 14.87741(W)   ADJUSTED
 JV5443  ______________________________________________________________________
 JV5443  GEOID HEIGHT    -        -32.737 (meters)                     GEOID18
 JV5443  LAPLACE CORR    -         -3.87  (seconds)                    DEFLEC18
 JV5443  HORZ ORDER      -  THIRD
 JV5443
 JV5443.The horizontal coordinates were established by classical geodetic methods
 JV5443.and adjusted by the National Geodetic Survey in January 1992.
 JV5443
 JV5443.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5443.GEOID18 height accuracy estimate available here.
 JV5443
 JV5443.Click photographs - Photos may exist for this station.
 JV5443
 JV5443.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5443
 JV5443. The following values were computed from the NAD 83(1991) position.
 JV5443
 JV5443;                    North         East     Units Scale Factor Converg.
 JV5443;SPC MD       -   193,911.191   441,268.860   MT  0.99999366   +0 18 02.7
 JV5443;SPC MD       -   636,190.30  1,447,729.58   sFT  0.99999366   +0 18 02.7
 JV5443;UTM  18      - 4,363,659.680   369,076.408   MT  0.99981105   -0 57 56.5
 JV5443
 JV5443_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6907663659(NAD 83)
 JV5443
 JV5443                          SUPERSEDED SURVEY CONTROL
 JV5443
 JV5443  NAD 83(1986)-  39 24 45.07271(N)    076 31 14.88997(W) AD(       ) 3
 JV5443  NAD 27      -  39 24 44.68900(N)    076 31 16.01400(W) AD(       ) 3
 JV5443
 JV5443.Superseded values are not recommended for survey control.
 JV5443
 JV5443.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5443.See file dsdata.pdf to determine how the superseded data were derived.
 JV5443
 JV5443_MARKER: 57 = LOOKOUT TOWER
 JV5443_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5443+SATELLITE: SATELLITE OBSERVATIONS - July 07, 2002
 JV5443
 JV5443  HISTORY     - Date     Condition        Report By
 JV5443  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5443  HISTORY     - 1981     GOOD             NGS
 JV5443  HISTORY     - 19940930 GOOD             USPSQD
 JV5443  HISTORY     - 20010331 GOOD             NGS
 JV5443  HISTORY     - 20020707 GOOD             USPS
 JV5443
 JV5443                          STATION DESCRIPTION
 JV5443
 JV5443'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5443'THIS STATION IS LOCATED ABOUT 4-1/4 MI. E OF TOWSON ALONG THE S
 JV5443'SIDE OF OLD HARTFORD ROAD.  IT IS A STANDARD STEEL OBSERVATION
 JV5443'TOWER, APPROXIMATELY 125 FT. HIGH AND HAS A SECOND CABIN ABOUT
 JV5443'HALFWAY OF THE TOWER.
 JV5443'
 JV5443'THE POINT INTERSECTED WAS THE CENTER OF THE TOP OF THE TOWER.
 JV5443'
 JV5443'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 111,
 JV5443'148 AND 146 IN TOWSON, GO E ON STATE HIGHWAY 148 (JOPPA ROAD) FOR
 JV5443'3.6 MI. TO OLD HARTFORD ROAD, TURN LEFT ON OLD HARTFORD ROAD FOR
 JV5443'2.35 MI. TO A GRAVEL ROAD ON THE RIGHT, TURN RIGHT 0.1 MI. TO THE
 JV5443'TOWER AS DESCRIBED.
 JV5443
 JV5443                          STATION RECOVERY (1981)
 JV5443
 JV5443'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981 (CLN)
 JV5443'RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5443
 JV5443                          STATION RECOVERY (1994)
 JV5443
 JV5443'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5443'RECOVERED IN GOOD CONDITION.
 JV5443
 JV5443                          STATION RECOVERY (2001)
 JV5443
 JV5443'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV5443'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV5443
 JV5443                          STATION RECOVERY (2002)
 JV5443
 JV5443'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 JV5443'PRESENT NAME IS PROPERTY OF MARYLAND FOREST SERVICE  BALTIMORE PROJECT
 JV5443'9405 OLD HARFORD ROAD. NO LONGER NAMED OLD HARTFORD ROAD. NO CABINS ON
 JV5443'STRUCTURE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5274 ***********************************************************************
 JV5274  DESIGNATION -  CUCKHOLD
 JV5274  PID         -  JV5274
 JV5274  STATE/COUNTY-  MD/BALTIMORE
 JV5274  COUNTRY     -  US
 JV5274  USGS QUAD   -  SPARROWS POINT (2016)
 JV5274
 JV5274                         *CURRENT SURVEY CONTROL
 JV5274  ______________________________________________________________________
 JV5274* NAD 83(1991) POSITION- 39 14 18.89405(N) 076 23 59.26167(W)   ADJUSTED
 JV5274* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5274  ______________________________________________________________________
 JV5274  GEOID HEIGHT    -        -33.051 (meters)                     GEOID18
 JV5274  LAPLACE CORR    -         -1.66  (seconds)                    DEFLEC18
 JV5274  HORZ ORDER      -  SECOND
 JV5274
 JV5274.The horizontal coordinates were established by classical geodetic methods
 JV5274.and adjusted by the National Geodetic Survey in January 1992.
 JV5274
 JV5274.The orthometric height was scaled from a topographic map.
 JV5274
 JV5274.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5274.GEOID18 height accuracy estimate available here.
 JV5274
 JV5274.Click photographs - Photos may exist for this station.
 JV5274
 JV5274.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5274
 JV5274. The following values were computed from the NAD 83(1991) position.
 JV5274
 JV5274;                    North         East     Units Scale Factor Converg.
 JV5274;SPC MD       -   174,662.284   451,816.611   MT  0.99996985   +0 22 36.2
 JV5274;SPC MD       -   573,037.84  1,482,335.00   sFT  0.99996985   +0 22 36.2
 JV5274;UTM  18      - 4,344,186.347   379,194.991   MT  0.99977969   -0 53 08.0
 JV5274
 JV5274!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5274!SPC MD       -   1.00000507  x   0.99996985  =   0.99997492
 JV5274!UTM  18      -   1.00000507  x   0.99977969  =   0.99978476
 JV5274
 JV5274:                Primary Azimuth Mark                     Grid Az
 JV5274:SPC MD       -  REIN 2                                   263 55 24.3
 JV5274:UTM  18      -  REIN 2                                   265 11 08.5
 JV5274
 JV5274_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7919444186(NAD 83)
 JV5274
 JV5274|---------------------------------------------------------------------|
 JV5274| PID    Reference Object                     Distance      Geod. Az  |
 JV5274|                                                           dddmmss.s |
 JV5274| CB1129 CUCKHOLD RM 1                        19.758 METERS 14313     |
 JV5274| CB1130 CUCKHOLD RM 2                        34.955 METERS 18128     |
 JV5274| JV5287 REIN 2                              APPROX. 2.3 KM 2641800.5 |
 JV5274|---------------------------------------------------------------------|
 JV5274
 JV5274                          SUPERSEDED SURVEY CONTROL
 JV5274
 JV5274  NAD 83(1986)-  39 14 18.88908(N)    076 23 59.27077(W) AD(       ) 2
 JV5274  NAD 27      -  39 14 18.49760(N)    076 24 00.42690(W) AD(       ) 2
 JV5274
 JV5274.Superseded values are not recommended for survey control.
 JV5274
 JV5274.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5274.See file dsdata.pdf to determine how the superseded data were derived.
 JV5274
 JV5274_MARKER: DS = TRIANGULATION STATION DISK
 JV5274_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5274_STAMPING: CUCKHOLD 1961
 JV5274_MARK LOGO: CGS
 JV5274_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5274+STABILITY: SURFACE MOTION
 JV5274
 JV5274  HISTORY     - Date     Condition        Report By
 JV5274  HISTORY     - 1961     MONUMENTED       CGS
 JV5274  HISTORY     - 19940414 MARK NOT FOUND   USPSQD
 JV5274
 JV5274                          STATION DESCRIPTION
 JV5274
 JV5274'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5274'THIS STATION IS ON THE SOUTH SHORE OF THE BACK RIVER ON CUCKHOLD
 JV5274'POINT.  IT IS 13.0 METERS SOUTH OF THE M.H.W.L. AT A LOOSE STONE
 JV5274'SEA WALL, 4.9 METERS SOUTHEAST OF A FLAGPOLE, 13.1 METERS NORTH OF
 JV5274'THE NORTHWEST CORNER OF A STONE FACED HOUSE, AND 14.4 METERS
 JV5274'NORTHWEST OF THE NORTHEAST CORNER OF THE HOUSE.
 JV5274'
 JV5274'THE STATION IS A STANDARD DISK AS DESCRIBED IN NOTE 6A, STAMPED
 JV5274'CUCKHOLD 1961, AND IS SET FLUSH WITH THE GROUND.
 JV5274'
 JV5274'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED CUCKHOLD 1961 NO. 1
 JV5274'AND IS SET IN THE CONCRETE SEA WALL EAST OF THE STATION.
 JV5274'
 JV5274'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED CUCKHOLD 1961 NO. 2
 JV5274'AND IS SET IN THE NORTHEAST EDGE OF THE CONCRETE SIDEWALK
 JV5274'SOUTHEAST OF THE STATION.
 JV5274'
 JV5274'TO REACH THE STATION FROM THE INTERSECTION OF NORTH POINT ROAD AND
 JV5274'EASTERN BLVD., TAKE NORTH POINT ROAD SOUTHEAST FOR 5.1 MILES TO
 JV5274'THE SPARROWS POINT-EDGEMERE CLOVERLEAF.  FOLLOW SIGN TO EDGEMERE
 JV5274'OVER THIS CLOVERLEAF AND GO THROUGH EDGEMERE ON OLD NORTH POINT
 JV5274'ROAD FOR 2.1 MILES TO MILLER ISLAND ROAD.  TURN LEFT ON MILLER
 JV5274'ISLAND ROAD AND GO 2.0 MILES TO BAY DRIVE.  TURN LEFT ON BAY DRIVE
 JV5274'AND GO .1 MILE TO STATION ON RIGHT.
 JV5274'
 JV5274'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV5274
 JV5274                          STATION RECOVERY (1994)
 JV5274
 JV5274'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5274'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7083 ***********************************************************************
 HV7083  DESIGNATION -  CUCKOLD
 HV7083  PID         -  HV7083
 HV7083  STATE/COUNTY-  MD/CHARLES
 HV7083  COUNTRY     -  US
 HV7083  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7083
 HV7083                         *CURRENT SURVEY CONTROL
 HV7083  ______________________________________________________________________
 HV7083* NAD 83(1993) POSITION- 38 17 28.15901(N) 076 55 27.20631(W)   ADJUSTED
 HV7083* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7083  ______________________________________________________________________
 HV7083  GEOID HEIGHT    -        -33.604 (meters)                     GEOID18
 HV7083  LAPLACE CORR    -         -2.47  (seconds)                    DEFLEC18
 HV7083  HORZ ORDER      -  SECOND
 HV7083
 HV7083.The horizontal coordinates were established by classical geodetic methods
 HV7083.and adjusted by the National Geodetic Survey in November 1994.
 HV7083
 HV7083.The orthometric height was scaled from a topographic map.
 HV7083
 HV7083.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7083.GEOID18 height accuracy estimate available here.
 HV7083
 HV7083.Click photographs - Photos may exist for this station.
 HV7083
 HV7083.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7083
 HV7083. The following values were computed from the NAD 83(1993) position.
 HV7083
 HV7083;                    North         East     Units Scale Factor Converg.
 HV7083;SPC MD       -    69,323.823   406,629.204   MT  1.00000155   +0 02 51.2
 HV7083;SPC MD       -   227,439.91  1,334,082.65   sFT  1.00000155   +0 02 51.2
 HV7083;SPC VA N     - 2,070,499.881 3,637,843.632   MT  0.99996451   +0 59 00.5
 HV7083;SPC VA N     - 6,792,965.03 11,935,158.65   sFT  0.99996451   +0 59 00.5
 HV7083;UTM  18      - 4,239,871.471   331,720.982   MT  0.99994876   -1 11 33.5
 HV7083
 HV7083!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7083!SPC MD       -   1.00000531  x   1.00000155  =   1.00000686
 HV7083!SPC VA N     -   1.00000531  x   0.99996451  =   0.99996982
 HV7083!UTM  18      -   1.00000531  x   0.99994876  =   0.99995407
 HV7083
 HV7083:                Primary Azimuth Mark                     Grid Az
 HV7083:SPC MD       -  COBB                                     119 34 40.6
 HV7083:SPC VA N     -  COBB                                     118 38 31.3
 HV7083:UTM  18      -  COBB                                     120 49 05.3
 HV7083
 HV7083_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3172039871(NAD 83)
 HV7083
 HV7083|---------------------------------------------------------------------|
 HV7083| PID    Reference Object                     Distance      Geod. Az  |
 HV7083|                                                           dddmmss.s |
 HV7083| HV7085 CUCKOLD RM 1                         23.630 METERS 05408     |
 HV7083| HV7084 CLEMENT                               8.565 METERS 11028     |
 HV7083| HV7048 COBB                                APPROX. 7.9 KM 1193731.8 |
 HV7083|---------------------------------------------------------------------|
 HV7083
 HV7083                          SUPERSEDED SURVEY CONTROL
 HV7083
 HV7083  NAD 83(1991)-  38 17 28.15874(N)    076 55 27.21179(W) AD(       ) 2
 HV7083  NAD 83(1986)-  38 17 28.15912(N)    076 55 27.22145(W) AD(       ) 2
 HV7083  NAD 27      -  38 17 27.70000(N)    076 55 28.32700(W) AD(       ) 2
 HV7083
 HV7083.Superseded values are not recommended for survey control.
 HV7083
 HV7083.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7083.See file dsdata.pdf to determine how the superseded data were derived.
 HV7083
 HV7083_MARKER: DS = TRIANGULATION STATION DISK
 HV7083_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7083_STAMPING: CUCKOLD 1929
 HV7083_MARK LOGO: CGS
 HV7083_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7083+STABILITY: SURFACE MOTION
 HV7083
 HV7083  HISTORY     - Date     Condition        Report By
 HV7083  HISTORY     - 1929     MONUMENTED       CGS
 HV7083  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV7083  HISTORY     - 1954     MARK NOT FOUND   CGS
 HV7083
 HV7083                          STATION DESCRIPTION
 HV7083
 HV7083'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (FLP)
 HV7083'STATION IS ON THE N SHORE OF THE POTOMAC RIVER, VICINITY OF KETTLE
 HV7083'BOTTOM SHOALS, AND NEAR THE NW END OF THE SHOALS.  ON SWAN POINT,
 HV7083'1-3/4 MILES, NAUTICAL, SSW FROM THE ENTRANCE TO CUCKOLD CREEK.
 HV7083'THE STATION IS LOCATED ON A BLUFF THAT IS ABOUT 6-1/2 FEET HIGH,
 HV7083'AND WITH ITS FACE AT THE HIGH-WATER LINE.  STATION IS 23 FEET FROM
 HV7083'THE FACE OF THIS BLUFF, AND 55 FEET FROM THE EXTREME SW POINT OF
 HV7083'THE BLUFF.  STATION IS 10 FEET N OF A RIDGE THAT RUNS
 HV7083'APPROXIMATELY E AND W ALONG THE TOP OF THE BLUFF.  THERE IS A
 HV7083'TELEPHONE LINE RUNNING ALONG THE SHORE, AND IT CHANGES DIRECTION
 HV7083'FROM APPROXIMATELY N AND S TO E AND W AT THE STATION. THE STATION
 HV7083'IS APPROXIMATELY 25 YARDS NORMAL TO THE CENTER OF THE SHORT
 HV7083'SECTION THAT JOINS THE TANGENTS.  THE VEGETATION IN THE VICINITY
 HV7083'OF THE STATION IS GRASS ONLY, THE NEAREST TREES BEING A
 HV7083'CONSIDERABLE DISTANCE INSHORE FROM THE STATION.  THE STATION IS
 HV7083'LOCATED IN A HEAVY, WELL COMPACTED CLAY SOIL.
 HV7083'
 HV7083'THE STATION SUB-SURFACE MARK IS MARKED, AS DESCRIBED IN NOTE 7A,
 HV7083'BY A U.S.C. AND G.S. STANDARD DISK SET IN AN IRREGULAR MASS OF
 HV7083'CONCRETE, APPROXIMATELY CYLINDRICAL IN SHAPE, BEING ABOUT 8 INCHES
 HV7083'DEEP, AND 13 INCHES IN DIAMETER, THE SURFACE OF THE MARK BEING
 HV7083'APPROXIMATELY 3 FEET BELOW THE SURFACE OF THE GROUND.  ABOVE THE
 HV7083'SUB-SURFACE MARK, THERE IS A LAYER OF SAND APPROXIMATELY 6 INCHES
 HV7083'THICK.  THE SURFACE MARK IS MARKED, AS DESCRIBED IN NOTE 1C, BY A
 HV7083'U.S.C. AND G.S. STANDARD DISK SET IN AN IRREGULAR MASS OF
 HV7083'CONCRETE AS FOLLOWS--9 INCHES SQUARE ON TOP, THENCE IN THE SHAPE
 HV7083'OF A PYRAMID TO A DEPTH OF 4 INCHES, THENCE ROUGHLY CYLINDRICAL
 HV7083'AND ABOUT 15 INCHES IN DIAMETER TO A DEPTH OF 27 INCHES.  IT
 HV7083'PROJECTS ABOUT 2 INCHES ABOVE THE SURFACE OF THE GROUND.  BOTH THE
 HV7083'SUB-SURFACE AND THE SURFACE MARKS WERE STENCILED CUCKOLD 1929.
 HV7083'
 HV7083'REFERENCE MARK NO.1 IS MARKED, AS DESCRIBED IN NOTE 11C, BY A
 HV7083'U.S.C. AND G.S. STANDARD DISK, SET IN AN IRREGULAR MASS OF
 HV7083'CONCRETE AS FOLLOWS--9 INCHES SQUARE ON TOP, THENCE IN THE SHAPE
 HV7083'OF A PYRAMID FOR A DEPTH OF 4 INCHES, THENCE ROUGHLY CYLINDRICAL
 HV7083'AND ABOUT 15 INCHES IN DIAMETER TO A DEPTH OF 30 INCHES.  THE TOP
 HV7083'OF THE MARK IS FLUSH WITH THE SURFACE OF THE GROUND.  THE
 HV7083'REFERENCE MARK WAS STENCILED CUCKOLD NO.1 1929.
 HV7083'
 HV7083'ORDNANCE STATION CLEMENT IS LOCATED NEAR THE STATION, AND WILL
 HV7083'SERVE AS AN ADDITIONAL REFERENCE MARK.  THERE IS AN IRON TRIPOD,
 HV7083'WITH THE LEGS SET IN CONCRETE.  THIS TRIPOD IS EVIDENTLY
 HV7083'MAINTAINED BY THE NAVAL PROVING GROUNDS AT DAHLGREN, AND WILL
 HV7083'PROBABLY STAND FOR A CONSIDERABLE NUMBER OF YEARS AND SHOULD BE OF
 HV7083'CONSIDERABLE AID IN THE RECOVERY OF THE STATION.
 HV7083'
 HV7083'DISTANCES TO REFERENCE MARK AND STATION CLEMENT WERE MEASURED
 HV7083'HORIZONTALLY.
 HV7083'
 HV7083'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.6 METERS.
 HV7083
 HV7083                          STATION RECOVERY (1942)
 HV7083
 HV7083'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7083'THE SUBSURFACE STATION MARK HAS BEEN UNDERCUT OUT.  REFERENCE MARK
 HV7083'NO.1, RECOVERED AS DESCRIBED, IS IN GOOD CONDITION.
 HV7083
 HV7083                          STATION RECOVERY (1954)
 HV7083
 HV7083'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (DAJ)
 HV7083'A THOROUGH SEARCH WAS MADE FOR TRIANGULATION STATION CUCKOLD 1929
 HV7083'AND IT COULD NOT BE FOUND.  THE TARGET THAT WAS CONSTRUCTED AT
 HV7083'THAT POINT IN 1929 IS LAYING ABOUT 40 FEET OFF SHORE.  REFERENCE
 HV7083'MARK, CUCKOLD NO 1 1929 WAS FOUND LAYING ABOUT 60 FEET OFF SHORE
 HV7083'AT LOW TIDE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8139 ***********************************************************************
 HV8139  DESIGNATION -  CUCKOLD
 HV8139  PID         -  HV8139
 HV8139  STATE/COUNTY-  MD/ST MARYS
 HV8139  COUNTRY     -  US
 HV8139  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV8139
 HV8139                         *CURRENT SURVEY CONTROL
 HV8139  ______________________________________________________________________
 HV8139* NAD 83(1991) POSITION- 38 19 55.73758(N) 076 29 23.97853(W)   ADJUSTED
 HV8139* NAVD 88 ORTHO HEIGHT -    -1.    (meters)       -3.    (feet) SCALED
 HV8139  ______________________________________________________________________
 HV8139  GEOID HEIGHT    -        -34.289 (meters)                     GEOID18
 HV8139  LAPLACE CORR    -         -5.02  (seconds)                    DEFLEC18
 HV8139  HORZ ORDER      -  THIRD
 HV8139
 HV8139.The horizontal coordinates were established by classical geodetic methods
 HV8139.and adjusted by the National Geodetic Survey in January 1992.
 HV8139
 HV8139.The orthometric height was scaled from a topographic map.
 HV8139
 HV8139.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8139.GEOID18 height accuracy estimate available here.
 HV8139
 HV8139.Click photographs - Photos may exist for this station.
 HV8139
 HV8139.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8139
 HV8139. The following values were computed from the NAD 83(1991) position.
 HV8139
 HV8139;                    North         East     Units Scale Factor Converg.
 HV8139;SPC MD       -    73,996.062   444,591.810   MT  0.99999456   +0 19 12.3
 HV8139;SPC MD       -   242,768.75  1,458,631.63   sFT  0.99999456   +0 19 12.3
 HV8139;UTM  18      - 4,243,719.084   369,771.313   MT  0.99980886   -0 55 27.3
 HV8139
 HV8139!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8139!SPC MD       -   1.00000555  x   0.99999456  =   1.00000011
 HV8139!UTM  18      -   1.00000555  x   0.99980886  =   0.99981441
 HV8139
 HV8139_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6977143719(NAD 83)
 HV8139
 HV8139                          SUPERSEDED SURVEY CONTROL
 HV8139
 HV8139  NAD 83(1986)-  38 19 55.73542(N)    076 29 23.99323(W) AD(       ) 3
 HV8139
 HV8139.Superseded values are not recommended for survey control.
 HV8139
 HV8139.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8139.See file dsdata.pdf to determine how the superseded data were derived.
 HV8139
 HV8139_MARKER: DD = SURVEY DISK
 HV8139_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV8139_SP_SET: SET IN TOP OF IRREGULAR CONCRETE
 HV8139_STAMPING: CUCKOLD 1985
 HV8139_MARK LOGO: NOS
 HV8139_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 HV8139_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8139
 HV8139  HISTORY     - Date     Condition        Report By
 HV8139  HISTORY     - 1985     MONUMENTED       NOS
 HV8139
 HV8139                          STATION DESCRIPTION
 HV8139
 HV8139'DESCRIBED BY NATIONAL OCEAN SERVICE 1985 (REM)
 HV8139'THE STATION IS LOCATED ON A POINT OF LAND 0.4 MILES NORTH-WEST OF
 HV8139'PT PATIENCE AT THE SOUTH-EAST SIDE OF CUCKOLD CREEK.
 HV8139'
 HV8139'STATION WAS ESTABLISHED BY BOAT.
 HV8139'
 HV8139'THE STATION IS A NOS ALUMINUM DISK STAMPED---CUCKOLD 1985---,AFFIXED
 HV8139'TO A 1.1 M ALUMINUM ROD EMBEDDED IN CONCRETE AND PROJECTING 0.1 M.
 HV8139'IT IS LOCATED,
 HV8139'5.0 M (16.4 FT) WEST FROM HIGH WATER LINE.
 HV8139'
 HV8139'HEIGHT OF LIGHT SHOWN WAS 1.300 METERS ABOVE THE MARK.
 HV8139'
 HV8139'DESCRIBED BY J.G.FREDERICK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7085 ***********************************************************************
 HV7085  DESIGNATION -  CUCKOLD RM 1
 HV7085  PID         -  HV7085
 HV7085  STATE/COUNTY-  MD/CHARLES
 HV7085  COUNTRY     -  US
 HV7085  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7085
 HV7085                         *CURRENT SURVEY CONTROL
 HV7085  ______________________________________________________________________
 HV7085* NAD 83(1993) POSITION- 38 17 28.60805(N) 076 55 26.41833(W)   ADJUSTED
 HV7085* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7085  ______________________________________________________________________
 HV7085  GEOID HEIGHT    -        -33.605 (meters)                     GEOID18
 HV7085  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 HV7085  HORZ ORDER      -  SECOND
 HV7085
 HV7085.The horizontal coordinates were established by classical geodetic methods
 HV7085.and adjusted by the National Geodetic Survey in November 1994.
 HV7085
 HV7085.The orthometric height was scaled from a topographic map.
 HV7085
 HV7085.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7085.GEOID18 height accuracy estimate available here.
 HV7085
 HV7085.Click photographs - Photos may exist for this station.
 HV7085
 HV7085.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7085
 HV7085. The following values were computed from the NAD 83(1993) position.
 HV7085
 HV7085;                    North         East     Units Scale Factor Converg.
 HV7085;SPC MD       -    69,337.685   406,648.342   MT  1.00000153   +0 02 51.7
 HV7085;SPC MD       -   227,485.39  1,334,145.44   sFT  1.00000153   +0 02 51.7
 HV7085;SPC VA N     - 2,070,514.053 3,637,862.540   MT  0.99996450   +0 59 01.0
 HV7085;SPC VA N     - 6,793,011.52 11,935,220.68   sFT  0.99996450   +0 59 01.0
 HV7085;UTM  18      - 4,239,884.915   331,740.414   MT  0.99994868   -1 11 33.0
 HV7085
 HV7085!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7085!SPC MD       -   1.00000531  x   1.00000153  =   1.00000684
 HV7085!SPC VA N     -   1.00000531  x   0.99996450  =   0.99996981
 HV7085!UTM  18      -   1.00000531  x   0.99994868  =   0.99995399
 HV7085
 HV7085_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3174039884(NAD 83)
 HV7085
 HV7085                          SUPERSEDED SURVEY CONTROL
 HV7085
 HV7085  NAD 83(1991)-  38 17 28.60777(N)    076 55 26.42381(W) AD(       ) 2
 HV7085  NAD 83(1986)-  38 17 28.60816(N)    076 55 26.43347(W) AD(       ) 2
 HV7085  NAD 27      -  38 17 28.14900(N)    076 55 27.53900(W) AD(       ) 2
 HV7085
 HV7085.Superseded values are not recommended for survey control.
 HV7085
 HV7085.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7085.See file dsdata.pdf to determine how the superseded data were derived.
 HV7085
 HV7085_MARKER: DR = REFERENCE MARK DISK
 HV7085_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7085_STAMPING: CUCKOLD NO 1 1929
 HV7085_MARK LOGO: CGS
 HV7085_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7085+STABILITY: SURFACE MOTION
 HV7085
 HV7085  HISTORY     - Date     Condition        Report By
 HV7085  HISTORY     - 1929     MONUMENTED       CGS
 HV7085
 HV7085                          STATION DESCRIPTION
 HV7085
 HV7085'DESCRIBED BY COAST AND GEODETIC SURVEY 1929
 HV7085'STATION IS ON THE N SHORE OF THE POTOMAC RIVER, VICINITY OF KETTLE
 HV7085'BOTTOM SHOALS, AND NEAR THE NW END OF THE SHOALS.  ON SWAN POINT,
 HV7085'1-3/4 MILES, NAUTICAL, SSW FROM THE ENTRANCE TO CUCKOLD CREEK.
 HV7085'THE STATION IS LOCATED ON A BLUFF THAT IS ABOUT 6-1/2 FEET HIGH,
 HV7085'AND WITH ITS FACE AT THE HIGH-WATER LINE.
 HV7085'
 HV7085'CUCKOLD MARK NO.1 IS MARKED, AS DESCRIBED IN NOTE 11C, BY A U.S.C.
 HV7085'AND G.S. STANDARD DISK, SET IN AN IRREGULAR MASS OF CONCRETE AS
 HV7085'FOLLOWS--9 INCHES SQUARE ON TOP, THENCE IN THE SHAPE OF A PYRAMID
 HV7085'FOR A DEPTH OF 4 INCHES, THENCE ROUGHLY CYLINDRICAL AND ABOUT 15
 HV7085'INCHES IN DIAMETER TO A DEPTH OF 30 INCHES.  THE TOP OF THE MARK
 HV7085'IS FLUSH WITH THE SURFACE OF THE GROUND.  THE REFERENCE MARK WAS
 HV7085'STENCILED CUCKOLD NO.1 1929.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5118 ***********************************************************************
 JV5118  DESIGNATION -  CULT
 JV5118  PID         -  JV5118
 JV5118  STATE/COUNTY-  MD/KENT
 JV5118  COUNTRY     -  US
 JV5118  USGS QUAD   -  ROCK HALL (2016)
 JV5118
 JV5118                         *CURRENT SURVEY CONTROL
 JV5118  ______________________________________________________________________
 JV5118* NAD 83(1991) POSITION- 39 07 55.74819(N) 076 08 47.63327(W)   ADJUSTED
 JV5118* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5118  ______________________________________________________________________
 JV5118  GEOID HEIGHT    -        -33.465 (meters)                     GEOID18
 JV5118  LAPLACE CORR    -         -2.12  (seconds)                    DEFLEC18
 JV5118  HORZ ORDER      -  THIRD
 JV5118
 JV5118.The horizontal coordinates were established by classical geodetic methods
 JV5118.and adjusted by the National Geodetic Survey in January 1992.
 JV5118
 JV5118.The orthometric height was scaled from a topographic map.
 JV5118
 JV5118.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5118.GEOID18 height accuracy estimate available here.
 JV5118
 JV5118.Click photographs - Photos may exist for this station.
 JV5118
 JV5118.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5118
 JV5118. The following values were computed from the NAD 83(1991) position.
 JV5118
 JV5118;                    North         East     Units Scale Factor Converg.
 JV5118;SPC MD       -   163,021.588   473,788.262   MT  0.99995983   +0 32 08.3
 JV5118;SPC MD       -   534,846.66  1,554,420.32   sFT  0.99995983   +0 32 08.3
 JV5118;UTM  18      - 4,332,067.658   400,900.533   MT  0.99972092   -0 43 25.2
 JV5118
 JV5118!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5118!SPC MD       -   1.00000513  x   0.99995983  =   0.99996496
 JV5118!UTM  18      -   1.00000513  x   0.99972092  =   0.99972605
 JV5118
 JV5118:                Primary Azimuth Mark                     Grid Az
 JV5118:SPC MD       -  WANN                                     207 51 23.2
 JV5118:UTM  18      -  WANN                                     209 06 56.7
 JV5118
 JV5118_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0090032067(NAD 83)
 JV5118
 JV5118|---------------------------------------------------------------------|
 JV5118| PID    Reference Object                     Distance      Geod. Az  |
 JV5118|                                                           dddmmss.s |
 JV5118| JV5123 WANN                                APPROX. 0.8 KM 2082331.5 |
 JV5118| JV5122 LEARY                               401.781 METERS 2514718.0 |
 JV5118| JV5127 NEST                                378.285 METERS 35248     |
 JV5118|---------------------------------------------------------------------|
 JV5118
 JV5118                          SUPERSEDED SURVEY CONTROL
 JV5118
 JV5118  NAD 83(1986)-  39 07 55.74253(N)    076 08 47.64476(W) AD(       ) 3
 JV5118  NAD 27      -  39 07 55.35100(N)    076 08 48.82200(W) AD(       ) 3
 JV5118  USSD        -  39 07 55.75400(N)    076 08 48.63800(W) AD(       ) 3
 JV5118
 JV5118.Superseded values are not recommended for survey control.
 JV5118
 JV5118.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5118.See file dsdata.pdf to determine how the superseded data were derived.
 JV5118
 JV5118_MARKER: H = DRILL HOLE
 JV5118_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5118_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5118+STABILITY: SURFACE MOTION
 JV5118
 JV5118  HISTORY     - Date     Condition        Report By
 JV5118  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5118  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV5118
 JV5118                          STATION DESCRIPTION
 JV5118
 JV5118'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5118'STATION IS ON THE EASTERN SHORE OF EAST FORK OF LANGFORD CREEK,
 JV5118'ON POINT ABOUT 1-1/4 MILES NE OF MAIN BODY OF LANGFORD CREEK AND
 JV5118'1/4 MILE E OF LEARYS (OLD) WHARF, ABOUT 3 FEET ABOVE HIGH WATER,
 JV5118'12 YARDS SSE OF SHORE, 16 YARDS E OF SHORE, 4 YARDS SSE OF A ROAD,
 JV5118'AND 40 YARDS SE OF A WHARF.
 JV5118'
 JV5118'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5118'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5118'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5118'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5118'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5118'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5118'
 JV5118'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5118'FOLLOWS--NEAR PEAK OF BARN, 3/4 MILE, S 24 DEG 07 MIN W.  PEAK OF
 JV5118'HOUSE SHOWING THROUGH TREES, 1 MILE, S 41 DEG 20 MIN W.  CHIMNEY OF
 JV5118'HOUSE, 2-1/4 MILES, S 50 DEG 55 MIN W. S PEAK OF HOUSE, 3/8 MILE, S 81
 JV5118'DEG 26 MIN W.  S PEAK OF HOUSE, 3/8 MILE, N 04 DEG 29 MIN W. CHIMNEY
 JV5118'OF HOUSE, 1 MILE, N 18 DEG 49 MIN E. N CHIMNEY OF HOUSE, N 73 DEG
 JV5118'02 MIN E.
 JV5118
 JV5118                          STATION RECOVERY (1939)
 JV5118
 JV5118'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5118'STATION WAS NOT RECOVERED.
 JV5118'
 JV5118'OLD WHARF AND ROAD STILL CLEARLY EVIDENT.  THERE IS NOW A BARROW
 JV5118'PIT FOR A CONSIDERABLE AREA AT THE LOCATION OF THE
 JV5118'MONUMENT.  ACCORDING TO AN EMPLOYEE OF THE FARM THE EARTH WAS
 JV5118'REMOVED SEVERAL YEARS AGO BY A STEAM SHOVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1494 ***********************************************************************
 JW1494  DESIGNATION -  CUMBERLAND ALLEGANY CO CTHSE
 JW1494  PID         -  JW1494
 JW1494  STATE/COUNTY-  MD/ALLEGANY
 JW1494  COUNTRY     -  US
 JW1494  USGS QUAD   -  CUMBERLAND (2016)
 JW1494
 JW1494                         *CURRENT SURVEY CONTROL
 JW1494  ______________________________________________________________________
 JW1494* NAD 83(1995) POSITION- 39 39 02.95827(N) 078 46 00.38401(W)   ADJUSTED
 JW1494  ______________________________________________________________________
 JW1494  GEOID HEIGHT    -        -32.707 (meters)                     GEOID18
 JW1494  LAPLACE CORR    -         -5.63  (seconds)                    DEFLEC18
 JW1494  HORZ ORDER      -  THIRD
 JW1494
 JW1494.The horizontal coordinates were established by classical geodetic methods
 JW1494.and adjusted by the National Geodetic Survey in April 1998.
 JW1494
 JW1494.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1494.GEOID18 height accuracy estimate available here.
 JW1494
 JW1494.Click photographs - Photos may exist for this station.
 JW1494
 JW1494.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1494
 JW1494. The following values were computed from the NAD 83(1995) position.
 JW1494
 JW1494;                    North         East     Units Scale Factor Converg.
 JW1494;SPC MD       -   221,727.919   248,365.954   MT  1.00004131   -1 06 32.0
 JW1494;SPC MD       -   727,452.35    814,847.30   sFT  1.00004131   -1 06 32.0
 JW1494;SPC PA S     -    35,755.019   512,730.194   MT  1.00005618   -0 39 34.8
 JW1494;SPC PA S     -   117,306.26  1,682,182.31   sFT  1.00005618   -0 39 34.8
 JW1494;SPC WV N     -   128,017.900   662,926.386   MT  0.99994084   +0 28 03.5
 JW1494;SPC WV N     -   420,005.39  2,174,950.98   sFT  0.99994084   +0 28 03.5
 JW1494;UTM  17      - 4,391,386.433   691,604.086   MT  1.00005200   +1 25 31.7
 JW1494
 JW1494_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9160491386(NAD 83)
 JW1494
 JW1494                          SUPERSEDED SURVEY CONTROL
 JW1494
 JW1494  NAD 83(1991)-  39 39 02.95859(N)    078 46 00.38657(W) AD(       ) 3
 JW1494  NAD 83(1986)-  39 39 02.96187(N)    078 46 00.39175(W) AD(       ) 3
 JW1494  NAD 27      -  39 39 02.65600(N)    078 46 01.33200(W) AD(       ) 3
 JW1494
 JW1494.Superseded values are not recommended for survey control.
 JW1494
 JW1494.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1494.See file dsdata.pdf to determine how the superseded data were derived.
 JW1494
 JW1494_MARKER: 89 = SPIRE
 JW1494_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1494+SATELLITE: SATELLITE OBSERVATIONS - June 16, 2007
 JW1494
 JW1494  HISTORY     - Date     Condition        Report By
 JW1494  HISTORY     - 1941     FIRST OBSERVED   CGS
 JW1494  HISTORY     - 1955     GOOD             CGS
 JW1494  HISTORY     - 20070616 GOOD             GEOCAC
 JW1494
 JW1494                          STATION DESCRIPTION
 JW1494
 JW1494'DESCRIBED BY COAST AND GEODETIC SURVEY 1941 (GWL)
 JW1494'THIS STATION IS THE SPIRE ON THE ALLEGANY COUNTY COURTHOUSE.
 JW1494'
 JW1494'IT IS A RED BRICK BUILDING WITH A SPIRE ABOUT 100 FEET HIGH.
 JW1494'
 JW1494'IT IS LOCATED ON A HILL AT THE W EDGE OF THE BUSINESS DISTRICT OF
 JW1494'CUMBERLAND.  THE POINT OBSERVED UPON WAS THE APEX OF THE ROOF OF
 JW1494'THE SPIRE.
 JW1494
 JW1494                          STATION RECOVERY (1955)
 JW1494
 JW1494'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1494'THE STATION WAS RECOVERED AS PREVIOUSLY DESCRIBED.
 JW1494
 JW1494                          STATION RECOVERY (2007)
 JW1494
 JW1494'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JW1494'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1499 ***********************************************************************
 JW1499  DESIGNATION -  CUMBERLAND BRADDOCK WATER TANK
 JW1499  PID         -  JW1499
 JW1499  STATE/COUNTY-  MD/ALLEGANY
 JW1499  COUNTRY     -  US
 JW1499  USGS QUAD   -  CUMBERLAND (2016)
 JW1499
 JW1499                         *CURRENT SURVEY CONTROL
 JW1499  ______________________________________________________________________
 JW1499* NAD 83(1995) POSITION- 39 38 43.27830(N) 078 48 17.88504(W)   ADJUSTED
 JW1499  ______________________________________________________________________
 JW1499  GEOID HEIGHT    -        -32.581 (meters)                     GEOID18
 JW1499  LAPLACE CORR    -         -6.82  (seconds)                    DEFLEC18
 JW1499  HORZ ORDER      -  THIRD
 JW1499
 JW1499.The horizontal coordinates were established by classical geodetic methods
 JW1499.and adjusted by the National Geodetic Survey in April 1998.
 JW1499
 JW1499.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1499.GEOID18 height accuracy estimate available here.
 JW1499
 JW1499.Click photographs - Photos may exist for this station.
 JW1499
 JW1499.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1499
 JW1499. The following values were computed from the NAD 83(1995) position.
 JW1499
 JW1499;                    North         East     Units Scale Factor Converg.
 JW1499;SPC MD       -   221,185.190   245,076.298   MT  1.00004002   -1 07 58.3
 JW1499;SPC MD       -   725,671.74    804,054.49   sFT  1.00004002   -1 07 58.3
 JW1499;SPC PA S     -    35,186.530   509,444.837   MT  1.00005750   -0 41 04.0
 JW1499;SPC PA S     -   115,441.14  1,671,403.60   sFT  1.00005750   -0 41 04.0
 JW1499;SPC WV N     -   127,384.946   659,653.232   MT  0.99994080   +0 26 35.8
 JW1499;SPC WV N     -   417,928.78  2,164,212.31   sFT  0.99994080   +0 26 35.8
 JW1499;UTM  17      - 4,390,698.785   688,341.630   MT  1.00003674   +1 24 03.3
 JW1499
 JW1499_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8834190698(NAD 83)
 JW1499
 JW1499                          SUPERSEDED SURVEY CONTROL
 JW1499
 JW1499  NAD 83(1991)-  39 38 43.27788(N)    078 48 17.88823(W) AD(       ) 3
 JW1499  NAD 83(1986)-  39 38 43.28211(N)    078 48 17.89420(W) AD(       ) 3
 JW1499  NAD 27      -  39 38 42.96700(N)    078 48 18.82800(W) AD(       ) 3
 JW1499
 JW1499.Superseded values are not recommended for survey control.
 JW1499
 JW1499.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1499.See file dsdata.pdf to determine how the superseded data were derived.
 JW1499
 JW1499_MARKER: 53 = ELEVATED TANK
 JW1499_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1499+SATELLITE: SATELLITE OBSERVATIONS - June 16, 2007
 JW1499
 JW1499  HISTORY     - Date     Condition        Report By
 JW1499  HISTORY     - 1955     FIRST OBSERVED   CGS
 JW1499  HISTORY     - 1973     GOOD             NGS
 JW1499  HISTORY     - 20070616 GOOD             GEOCAC
 JW1499
 JW1499                          STATION DESCRIPTION
 JW1499
 JW1499'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1499'THE STATION IS LOCATED ON A PROMINENT HILL LYING ABOUT 0.3 MILE
 JW1499'WEST OF THE CITY LIMITS OF CUMBERLAND.  IT IS AN ELEVATED TANK
 JW1499'SUPPORTED BY FOUR STEEL LEGS AND IT IS ABOUT 100 FEET
 JW1499'HIGH.  DISTANCES AND DIRECTIONS WERE TAKEN TO THE COMPUTED CENTER
 JW1499'OF THE STANDPIPE FROM TRIANGULATION STATION BRADDOCK AND THE
 JW1499'DISTANCE WAS FOUND TO BE 57.27 FEET OR 17.456 METERS.
 JW1499
 JW1499                          STATION RECOVERY (1973)
 JW1499
 JW1499'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JW1499'RECOVERED AS DESCRIBED.
 JW1499'
 JW1499'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JW1499'3 MILES WEST OF CUMBERLAND.
 JW1499
 JW1499                          STATION RECOVERY (2007)
 JW1499
 JW1499'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JW1499'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1496 ***********************************************************************
 JW1496  DESIGNATION -  CUMBERLAND CENTER ST METH CH
 JW1496  PID         -  JW1496
 JW1496  STATE/COUNTY-  MD/ALLEGANY
 JW1496  COUNTRY     -  US
 JW1496  USGS QUAD   -  CUMBERLAND (2016)
 JW1496
 JW1496                         *CURRENT SURVEY CONTROL
 JW1496  ______________________________________________________________________
 JW1496* NAD 83(1995) POSITION- 39 39 19.25187(N) 078 45 53.40445(W)   ADJUSTED
 JW1496  ______________________________________________________________________
 JW1496  GEOID HEIGHT    -        -32.704 (meters)                     GEOID18
 JW1496  LAPLACE CORR    -         -5.64  (seconds)                    DEFLEC18
 JW1496  HORZ ORDER      -  THIRD
 JW1496
 JW1496.The horizontal coordinates were established by classical geodetic methods
 JW1496.and adjusted by the National Geodetic Survey in April 1998.
 JW1496
 JW1496.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1496.GEOID18 height accuracy estimate available here.
 JW1496
 JW1496.Click photographs - Photos may exist for this station.
 JW1496
 JW1496.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1496
 JW1496. The following values were computed from the NAD 83(1995) position.
 JW1496
 JW1496;                    North         East     Units Scale Factor Converg.
 JW1496;SPC MD       -   222,227.140   248,542.044   MT  1.00004238   -1 06 27.6
 JW1496;SPC MD       -   729,090.21    815,425.02   sFT  1.00004238   -1 06 27.6
 JW1496;SPC PA S     -    36,255.613   512,902.366   MT  1.00005509   -0 39 30.3
 JW1496;SPC PA S     -   118,948.62  1,682,747.18   sFT  1.00005509   -0 39 30.3
 JW1496;SPC WV N     -   128,521.726   663,088.658   MT  0.99994087   +0 28 07.9
 JW1496;SPC WV N     -   421,658.36  2,175,483.37   sFT  0.99994087   +0 28 07.9
 JW1496;UTM  17      - 4,391,892.957   691,757.929   MT  1.00005273   +1 25 36.6
 JW1496
 JW1496_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9175791892(NAD 83)
 JW1496
 JW1496                          SUPERSEDED SURVEY CONTROL
 JW1496
 JW1496  NAD 83(1991)-  39 39 19.25249(N)    078 45 53.40678(W) AD(       ) 3
 JW1496  NAD 83(1986)-  39 39 19.25570(N)    078 45 53.41192(W) AD(       ) 3
 JW1496  NAD 27      -  39 39 18.94100(N)    078 45 54.34700(W) AD(       ) 3
 JW1496
 JW1496.Superseded values are not recommended for survey control.
 JW1496
 JW1496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1496.See file dsdata.pdf to determine how the superseded data were derived.
 JW1496
 JW1496_MARKER: 90 = CHURCH SPIRE
 JW1496_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1496+SATELLITE: SATELLITE OBSERVATIONS - June 16, 2007
 JW1496
 JW1496  HISTORY     - Date     Condition        Report By
 JW1496  HISTORY     - 1955     FIRST OBSERVED   CGS
 JW1496  HISTORY     - 20070616 GOOD             GEOCAC
 JW1496
 JW1496                          STATION DESCRIPTION
 JW1496
 JW1496'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1496'THE STATION IS AT THE CORNER OF MARKET AND CENTER STREETS IN THE
 JW1496'CENTER OF CUMBERLAND.  IT IS A RED BRICK BUILDING WITH A TALL
 JW1496'SPIRE AT THE SOUTHWEST CORNER, ABOUT 80 FEET HIGH, AND HAVING A
 JW1496'CROSS WITHIN A CIRCLE AT THE TOP.  THE POINT OBSERVED WAS THE
 JW1496'TOP OF THE CROSS.
 JW1496
 JW1496                          STATION RECOVERY (2007)
 JW1496
 JW1496'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JW1496'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DF6303 ***********************************************************************
 DF6303  CORS        -  This is a GPS Continuously Operating Reference Station.
 DF6303  DESIGNATION -  CUMBERLAND COOP CORS ARP
 DF6303  CORS_ID     -  ALLG
 DF6303  PID         -  DF6303
 DF6303  STATE/COUNTY-  MD/ALLEGANY
 DF6303  COUNTRY     -  US
 DF6303  USGS QUAD   -  EVITTS CREEK (2016)
 DF6303
 DF6303                         *CURRENT SURVEY CONTROL
 DF6303  ______________________________________________________________________
 DF6303* NAD 83(2011) POSITION- 39 39 13.88862(N) 078 43 50.50332(W)   ADJUSTED
 DF6303* NAD 83(2011) ELLIP HT-   175.741 (meters)        (04/??/25)   ADJUSTED
 DF6303* NAD 83(2011) EPOCH   -  2010.00
 DF6303  ______________________________________________________________________
 DF6303  GEOID HEIGHT    -        -32.788 (meters)                     GEOID18
 DF6303  NAD 83(2011) X  -    960,973.377 (meters)                     COMP
 DF6303  NAD 83(2011) Y  - -4,822,646.747 (meters)                     COMP
 DF6303  NAD 83(2011) Z  -  4,048,582.195 (meters)                     COMP
 DF6303
 DF6303  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DF6303  Standards:
 DF6303         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DF6303            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DF6303  -------------------------------------------------------------------
 DF6303  NETWORK    0.04   0.09           0.02   0.01   0.04     -0.10907100
 DF6303  -------------------------------------------------------------------
 DF6303
 DF6303.The coordinates were established by GPS observations
 DF6303.and adjusted by the National Geodetic Survey in April 2025.
 DF6303
 DF6303.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DF6303.been affixed to the stable North American Tectonic Plate. 
 DF6303
 DF6303.The coordinates are valid at the epoch date displayed above
 DF6303.which is a decimal equivalence of Year/Month/Day.
 DF6303
 DF6303.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DF6303.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DF6303.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DF6303.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DF6303.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DF6303.published epoch of 2010.00.
 DF6303
 DF6303.Additional information on MYCS is available at:
 DF6303.https://geodesy.noaa.gov/CORS/index.shtml
 DF6303
 DF6303.Significant digits in the geoid height do not necessarily reflect accuracy.
 DF6303.GEOID18 height accuracy estimate available here.
 DF6303
 DF6303.The PID for the CORS L1 Phase Center is DF6304.
 DF6303
 DF6303.Click photographs - Photos may exist for this station.
 DF6303
 DF6303.The XYZ, and position/ellipsoidal ht. are equivalent.
 DF6303
 DF6303.The ellipsoidal height was determined by GPS observations
 DF6303.and is referenced to NAD 83.
 DF6303
 DF6303. The following values were computed from the NAD 83(2011) position.
 DF6303
 DF6303;                    North         East     Units Scale Factor Converg.
 DF6303;SPC MD       -   222,005.661   251,468.377   MT  1.00004203   -1 05 10.5
 DF6303;SPC MD       -   728,363.57    825,025.83   sFT  1.00004203   -1 05 10.5
 DF6303;UTM  17      - 4,391,801.108   694,691.245   MT  1.00006669   +1 26 55.0
 DF6303
 DF6303!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DF6303!SPC MD       -   0.99997243  x   1.00004203  =   1.00001446
 DF6303!UTM  17      -   0.99997243  x   1.00006669  =   1.00003912
 DF6303
 DF6303_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9469191801(NAD 83)
 DF6303
 DF6303                          SUPERSEDED SURVEY CONTROL
 DF6303
 DF6303  NAD 83(2011)-  39 39 13.88871(N)    078 43 50.50328(W) AD(2010.00) c
 DF6303  ELLIP H (06/??/19)  175.744  (m)                       GP(2010.00) c c
 DF6303  NAD 83(2011)-  39 39 13.88870(N)    078 43 50.50322(W) AD(2010.00) c
 DF6303  ELLIP H (08/??/11)  175.741  (m)                       GP(2010.00) c c
 DF6303  NAD 83(CORS)-  39 39 13.88939(N)    078 43 50.50374(W) AD(2002.00) c
 DF6303  ELLIP H (04/??/06)  175.761  (m)                       GP(2002.00) c c
 DF6303  NAD 83(CORS)-  39 39 13.88898(N)    078 43 50.50421(W) AD(2002.00) c
 DF6303  ELLIP H (04/??/02)  175.768  (m)                       GP(2002.00) c c
 DF6303
 DF6303.Superseded values are not recommended for survey control.
 DF6303
 DF6303.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DF6303.See file dsdata.pdf to determine how the superseded data were derived.
 DF6303
 DF6303_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 DF6303
 DF6303                          STATION DESCRIPTION
 DF6303
 DF6303'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 DF6303'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 DF6303'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 DF6303'AND LOG FILES ACCESSIBLE AT:
 DF6303'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1481 ***********************************************************************
 JW1481  DESIGNATION -  CUMBERLAND MUNICIPAL TANK
 JW1481  PID         -  JW1481
 JW1481  STATE/COUNTY-  MD/ALLEGANY
 JW1481  COUNTRY     -  US
 JW1481  USGS QUAD   -  EVITTS CREEK (2016)
 JW1481
 JW1481                         *CURRENT SURVEY CONTROL
 JW1481  ______________________________________________________________________
 JW1481* NAD 83(1995) POSITION- 39 38 53.57769(N) 078 44 47.64289(W)   ADJUSTED
 JW1481  ______________________________________________________________________
 JW1481  GEOID HEIGHT    -        -32.760 (meters)                     GEOID18
 JW1481  LAPLACE CORR    -         -4.62  (seconds)                    DEFLEC18
 JW1481  HORZ ORDER      -  THIRD
 JW1481
 JW1481.The horizontal coordinates were established by classical geodetic methods
 JW1481.and adjusted by the National Geodetic Survey in April 1998.
 JW1481
 JW1481.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1481.GEOID18 height accuracy estimate available here.
 JW1481
 JW1481.Click photographs - Photos may exist for this station.
 JW1481
 JW1481.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1481
 JW1481. The following values were computed from the NAD 83(1995) position.
 JW1481
 JW1481;                    North         East     Units Scale Factor Converg.
 JW1481;SPC MD       -   221,405.282   250,094.383   MT  1.00004069   -1 05 46.3
 JW1481;SPC MD       -   726,393.83    820,517.99   sFT  1.00004069   -1 05 46.3
 JW1481;SPC PA S     -    35,445.945   514,461.127   MT  1.00005681   -0 38 47.6
 JW1481;SPC PA S     -   116,292.24  1,687,861.21   sFT  1.00005681   -0 38 47.6
 JW1481;SPC WV N     -   127,742.968   664,662.864   MT  0.99994082   +0 28 49.9
 JW1481;SPC WV N     -   419,103.39  2,180,648.08   sFT  0.99994082   +0 28 49.9
 JW1481;UTM  17      - 4,391,140.538   693,345.117   MT  1.00006026   +1 26 17.9
 JW1481
 JW1481_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9334591140(NAD 83)
 JW1481
 JW1481                          SUPERSEDED SURVEY CONTROL
 JW1481
 JW1481  NAD 83(1991)-  39 38 53.57831(N)    078 44 47.64532(W) AD(       ) 3
 JW1481  NAD 83(1986)-  39 38 53.58125(N)    078 44 47.65028(W) AD(       ) 3
 JW1481  NAD 27      -  39 38 53.26500(N)    078 44 48.58700(W) AD(       ) 3
 JW1481
 JW1481.Superseded values are not recommended for survey control.
 JW1481
 JW1481.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1481.See file dsdata.pdf to determine how the superseded data were derived.
 JW1481
 JW1481_MARKER: 51 = TANK
 JW1481
 JW1481  HISTORY     - Date     Condition        Report By
 JW1481  HISTORY     - 1941     FIRST OBSERVED   CGS
 JW1481  HISTORY     - 1955     GOOD             CGS
 JW1481  HISTORY     - 20070616 MARK NOT FOUND   GEOCAC
 JW1481
 JW1481                          STATION DESCRIPTION
 JW1481
 JW1481'DESCRIBED BY COAST AND GEODETIC SURVEY 1941 (GWL)
 JW1481'THIS INTERSECTION STATION IS THE CUMBERLAND MUNICIPAL WATER TANK,
 JW1481'A STEEL, CYLINDRICAL TANK ABOUT 50 FEET HIGH SET ON THE GROUND.  IT
 JW1481'IS PAINTED ALUMINUM COLOR AND IS A HALF MILLION GALLON CAPACITY.
 JW1481'IT IS LOCATED IN CONSTITUTION PARK ON THE SE SIDE OF CUMBERLAND.
 JW1481'
 JW1481'THE POINT OBSERVED WAS THE BALL AT THE APEX OF THE TOP OF THE TANK.
 JW1481
 JW1481                          STATION RECOVERY (1955)
 JW1481
 JW1481'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1481'THE STATION WAS RECOVERED AS PREVIOUSLY DESCRIBED.
 JW1481
 JW1481                          STATION RECOVERY (2007)
 JW1481
 JW1481'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JW1481'DOES NOT APPEAR TO BE THE TANK DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1493 ***********************************************************************
 JW1493  DESIGNATION -  CUMBERLAND RADIO STA WDYK MAST
 JW1493  PID         -  JW1493
 JW1493  STATE/COUNTY-  MD/ALLEGANY
 JW1493  COUNTRY     -  US
 JW1493  USGS QUAD   -  CUMBERLAND (2016)
 JW1493
 JW1493                         *CURRENT SURVEY CONTROL
 JW1493  ______________________________________________________________________
 JW1493* NAD 83(1995) POSITION- 39 38 46.13962(N) 078 45 07.24998(W)   ADJUSTED
 JW1493  ______________________________________________________________________
 JW1493  GEOID HEIGHT    -        -32.751 (meters)                     GEOID18
 JW1493  LAPLACE CORR    -         -4.75  (seconds)                    DEFLEC18
 JW1493  HORZ ORDER      -  THIRD
 JW1493
 JW1493.The horizontal coordinates were established by classical geodetic methods
 JW1493.and adjusted by the National Geodetic Survey in April 1998.
 JW1493
 JW1493.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1493.GEOID18 height accuracy estimate available here.
 JW1493
 JW1493.Click photographs - Photos may exist for this station.
 JW1493
 JW1493.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1493
 JW1493. The following values were computed from the NAD 83(1995) position.
 JW1493
 JW1493;                    North         East     Units Scale Factor Converg.
 JW1493;SPC MD       -   221,184.874   249,622.579   MT  1.00004020   -1 05 58.6
 JW1493;SPC MD       -   725,670.71    818,970.08   sFT  1.00004020   -1 05 58.6
 JW1493;SPC PA S     -    35,221.839   513,991.059   MT  1.00005731   -0 39 00.4
 JW1493;SPC PA S     -   115,556.98  1,686,319.00   sFT  1.00005731   -0 39 00.4
 JW1493;SPC WV N     -   127,509.686   664,197.350   MT  0.99994080   +0 28 37.4
 JW1493;SPC WV N     -   418,338.03  2,179,120.81   sFT  0.99994080   +0 28 37.4
 JW1493;UTM  17      - 4,390,899.479   692,883.512   MT  1.00005806   +1 26 05.1
 JW1493
 JW1493_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9288390899(NAD 83)
 JW1493
 JW1493                          SUPERSEDED SURVEY CONTROL
 JW1493
 JW1493  NAD 83(1991)-  39 38 46.14010(N)    078 45 07.25209(W) AD(       ) 3
 JW1493  NAD 83(1986)-  39 38 46.14323(N)    078 45 07.25759(W) AD(       ) 3
 JW1493  NAD 27      -  39 38 45.82900(N)    078 45 08.19400(W) AD(       ) 3
 JW1493
 JW1493.Superseded values are not recommended for survey control.
 JW1493
 JW1493.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1493.See file dsdata.pdf to determine how the superseded data were derived.
 JW1493
 JW1493_MARKER: 42 = RADIO/TV MAST
 JW1493_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1493+SATELLITE: SATELLITE OBSERVATIONS - June 16, 2007
 JW1493
 JW1493  HISTORY     - Date     Condition        Report By
 JW1493  HISTORY     - 1955     FIRST OBSERVED   CGS
 JW1493  HISTORY     - 1979     GOOD             NGS
 JW1493  HISTORY     - 1980     GOOD             LOCENG
 JW1493  HISTORY     - 1983     GOOD             NGS
 JW1493  HISTORY     - 20070616 GOOD             GEOCAC
 JW1493
 JW1493                          STATION DESCRIPTION
 JW1493
 JW1493'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1493'THE STATION IS SOUTH OF THE MUNICIPAL WATER TANK AND THE WTBO
 JW1493'RADIO MAST AT THE EAST EDGE OF CUMBERLAND.  IT IS A THREE LEGGED
 JW1493'STRUCTURAL STEEL MAST, ABOUT 275 FEET HIGH, AND RED AND WHITE
 JW1493'IN COLOR.  THE POINT OBSERVED WAS THE TOP OF THE MAST.
 JW1493
 JW1493                          STATION RECOVERY (1979)
 JW1493
 JW1493'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (EEE)
 JW1493'RECOVERED AS DESCRIBED IN GOOD CONDITION.  THE MAST IS NOW USED BY
 JW1493'RADIO STATION WTBO.
 JW1493'
 JW1493'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN CUMBERLAND.
 JW1493
 JW1493                          STATION RECOVERY (1980)
 JW1493
 JW1493'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1980 (JRD)
 JW1493'NOW OPERATED BY RADIO STATION WTBO.
 JW1493
 JW1493                          STATION RECOVERY (1983)
 JW1493
 JW1493'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (DRM)
 JW1493'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.  CALL LETTERS
 JW1493'HAVE BEEN CHANGED TO WTBO.
 JW1493'
 JW1493'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN CUMBERLAND.
 JW1493
 JW1493                          STATION RECOVERY (2007)
 JW1493
 JW1493'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JW1493'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1497 ***********************************************************************
 JW1497  DESIGNATION -  CUMBERLAND ST MARY CATH CH TWR
 JW1497  PID         -  JW1497
 JW1497  STATE/COUNTY-  MD/ALLEGANY
 JW1497  COUNTRY     -  US
 JW1497  USGS QUAD   -  CUMBERLAND (2016)
 JW1497
 JW1497                         *CURRENT SURVEY CONTROL
 JW1497  ______________________________________________________________________
 JW1497* NAD 83(1995) POSITION- 39 38 20.87235(N) 078 45 29.09761(W)   ADJUSTED
 JW1497  ______________________________________________________________________
 JW1497  GEOID HEIGHT    -        -32.748 (meters)                     GEOID18
 JW1497  LAPLACE CORR    -         -5.06  (seconds)                    DEFLEC18
 JW1497  HORZ ORDER      -  THIRD
 JW1497
 JW1497.The horizontal coordinates were established by classical geodetic methods
 JW1497.and adjusted by the National Geodetic Survey in April 1998.
 JW1497
 JW1497.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1497.GEOID18 height accuracy estimate available here.
 JW1497
 JW1497.Click photographs - Photos may exist for this station.
 JW1497
 JW1497.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1497
 JW1497. The following values were computed from the NAD 83(1995) position.
 JW1497
 JW1497;                    North         East     Units Scale Factor Converg.
 JW1497;SPC MD       -   220,415.733   249,086.745   MT  1.00003856   -1 06 12.4
 JW1497;SPC MD       -   723,147.28    817,212.10   sFT  1.00003856   -1 06 12.4
 JW1497;SPC PA S     -    34,448.503   513,461.265   MT  1.00005902   -0 39 14.5
 JW1497;SPC PA S     -   113,019.80  1,684,580.83   sFT  1.00005902   -0 39 14.5
 JW1497;SPC WV N     -   126,726.170   663,682.931   MT  0.99994077   +0 28 23.4
 JW1497;SPC WV N     -   415,767.44  2,177,433.08   sFT  0.99994077   +0 28 23.4
 JW1497;UTM  17      - 4,390,107.383   692,382.202   MT  1.00005568   +1 25 50.4
 JW1497
 JW1497_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9238290107(NAD 83)
 JW1497
 JW1497                          SUPERSEDED SURVEY CONTROL
 JW1497
 JW1497  NAD 83(1991)-  39 38 20.87287(N)    078 45 29.09974(W) AD(       ) 3
 JW1497  NAD 83(1986)-  39 38 20.87615(N)    078 45 29.10532(W) AD(       ) 3
 JW1497  NAD 27      -  39 38 20.56000(N)    078 45 30.04000(W) AD(       ) 3
 JW1497
 JW1497.Superseded values are not recommended for survey control.
 JW1497
 JW1497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1497.See file dsdata.pdf to determine how the superseded data were derived.
 JW1497
 JW1497_MARKER: 91 = CHURCH CROSS
 JW1497_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1497+SATELLITE: SATELLITE OBSERVATIONS - June 16, 2007
 JW1497
 JW1497  HISTORY     - Date     Condition        Report By
 JW1497  HISTORY     - 1955     FIRST OBSERVED   CGS
 JW1497  HISTORY     - 20070616 GOOD             GEOCAC
 JW1497
 JW1497                          STATION DESCRIPTION
 JW1497
 JW1497'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1497'THE STATION IS AT THE CORNER OF OLD TOWN ROAD AND PENNSYLVANIA
 JW1497'AVENUE IN THE SOUTHEAST END OF CUMBERLAND.  IT IS A RED BRICK
 JW1497'BUILDING WITH A TOWER AT THE SOUTH END WHICH IS ABOUT 60 FEET
 JW1497'HIGH.  THE POINT OBSERVED WAS THE TOP OF THE CROSS AT THE
 JW1497'TOP OF THE TOWER.
 JW1497
 JW1497                          STATION RECOVERY (2007)
 JW1497
 JW1497'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JW1497'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5592 ***********************************************************************
 JV5592  DESIGNATION -  CURB
 JV5592  PID         -  JV5592
 JV5592  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5592  COUNTRY     -  US
 JV5592  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5592
 JV5592                         *CURRENT SURVEY CONTROL
 JV5592  ______________________________________________________________________
 JV5592* NAD 83(1991) POSITION- 39 15 30.71169(N) 076 36 57.18967(W)   ADJUSTED
 JV5592* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5592  ______________________________________________________________________
 JV5592  GEOID HEIGHT    -        -32.768 (meters)                     GEOID18
 JV5592  LAPLACE CORR    -         -5.40  (seconds)                    DEFLEC18
 JV5592  HORZ ORDER      -  THIRD
 JV5592
 JV5592.The horizontal coordinates were established by classical geodetic methods
 JV5592.and adjusted by the National Geodetic Survey in January 1992.
 JV5592
 JV5592.The orthometric height was scaled from a topographic map.
 JV5592
 JV5592.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5592.GEOID18 height accuracy estimate available here.
 JV5592
 JV5592.Click photographs - Photos may exist for this station.
 JV5592
 JV5592.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5592
 JV5592. The following values were computed from the NAD 83(1991) position.
 JV5592
 JV5592;                    North         East     Units Scale Factor Converg.
 JV5592;SPC MD       -   176,776.404   433,151.961   MT  0.99997211   +0 14 27.9
 JV5592;SPC MD       -   579,973.92  1,421,099.39   sFT  0.99997211   +0 14 27.9
 JV5592;UTM  18      - 4,346,710.954   360,584.495   MT  0.99983932   -1 01 21.8
 JV5592
 JV5592!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5592!SPC MD       -   1.00000518  x   0.99997211  =   0.99997729
 JV5592!UTM  18      -   1.00000518  x   0.99983932  =   0.99984450
 JV5592
 JV5592:                Primary Azimuth Mark                     Grid Az
 JV5592:SPC MD       -  DUGAN                                    208 34 21.7
 JV5592:UTM  18      -  DUGAN                                    209 50 11.4
 JV5592
 JV5592_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6058446710(NAD 83)
 JV5592
 JV5592|---------------------------------------------------------------------|
 JV5592| PID    Reference Object                     Distance      Geod. Az  |
 JV5592|                                                           dddmmss.s |
 JV5592| JV5594 FERRY BAR CHANNEL REAR RNG LT       375.379 METERS 17426     |
 JV5592| JV5587 DUGAN                               430.451 METERS 2084849.6 |
 JV5592| CB1131 CURB RM                              17.533 METERS 31544     |
 JV5592|---------------------------------------------------------------------|
 JV5592
 JV5592                          SUPERSEDED SURVEY CONTROL
 JV5592
 JV5592  NAD 83(1986)-  39 15 30.70819(N)    076 36 57.19865(W) AD(       ) 3
 JV5592  NAD 27      -  39 15 30.32400(N)    076 36 58.31300(W) AD(       ) 3
 JV5592
 JV5592.Superseded values are not recommended for survey control.
 JV5592
 JV5592.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5592.See file dsdata.pdf to determine how the superseded data were derived.
 JV5592
 JV5592_MARKER: DS = TRIANGULATION STATION DISK
 JV5592_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5592_STAMPING: CURB 1934
 JV5592_MARK LOGO: CGS
 JV5592_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5592+STABILITY: SURFACE MOTION
 JV5592
 JV5592  HISTORY     - Date     Condition        Report By
 JV5592  HISTORY     - 1934     MONUMENTED       CGS
 JV5592  HISTORY     - 1947     GOOD             CGS
 JV5592  HISTORY     - 1954     GOOD             CGS
 JV5592
 JV5592                          STATION DESCRIPTION
 JV5592
 JV5592'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5592'STATION IS LOCATED ON THE EASTERN CURB OF THE HANOVER STREET
 JV5592'BRIDGE OVER THE SECOND ARCH N OF THE DRAW.  IT IS 18.7 METERS N
 JV5592'OF THE NE SAFETY GATE AND 2.3 METERS W OF THE MOST EASTERLY FACE
 JV5592'OF THE RAILING.
 JV5592'
 JV5592'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5592'CONCRETE.
 JV5592'
 JV5592'THE REFERENCE MARK IS SET IN THE CURB ON THE W SIDE OF THE
 JV5592'BRIDGE.  IT IS 10.5 METERS N OF THE NW SAFETY GATE AND 2.3 METERS
 JV5592'E OF THE MOST WESTERLY FACE OF THE RAILING.
 JV5592
 JV5592                          STATION RECOVERY (1947)
 JV5592
 JV5592'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947 (TBR)
 JV5592'STATION AND REFERENCE MARK RECOVERED IN GOOD CONDITION.  ORIGINAL
 JV5592'DESCRIPTION ADEQUATE, EXCEPT THAT STATION MARK AND REFERENCE
 JV5592'MARK ARE BOTH S OF THE SAFETY GATES.
 JV5592
 JV5592                          STATION RECOVERY (1954)
 JV5592
 JV5592'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 JV5592'STATION AND REFERENCE MARK WERE RECOVERED IN GOOD
 JV5592'CONDITION.  REVISED DESCRIPTION OF THE STATION, AS RECOVERED IN
 JV5592'1947, IS ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5608 ***********************************************************************
 JV5608  DESIGNATION -  CURB 2
 JV5608  PID         -  JV5608
 JV5608  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5608  COUNTRY     -  US
 JV5608  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5608
 JV5608                         *CURRENT SURVEY CONTROL
 JV5608  ______________________________________________________________________
 JV5608* NAD 83(1991) POSITION- 39 15 30.91246(N) 076 36 57.90275(W)   ADJUSTED
 JV5608* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5608  ______________________________________________________________________
 JV5608  GEOID HEIGHT    -        -32.767 (meters)                     GEOID18
 JV5608  LAPLACE CORR    -         -5.40  (seconds)                    DEFLEC18
 JV5608  HORZ ORDER      -  THIRD
 JV5608
 JV5608.The horizontal coordinates were established by classical geodetic methods
 JV5608.and adjusted by the National Geodetic Survey in January 1992.
 JV5608
 JV5608.The orthometric height was scaled from a topographic map.
 JV5608
 JV5608.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5608.GEOID18 height accuracy estimate available here.
 JV5608
 JV5608.Click photographs - Photos may exist for this station.
 JV5608
 JV5608.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5608
 JV5608. The following values were computed from the NAD 83(1991) position.
 JV5608
 JV5608;                    North         East     Units Scale Factor Converg.
 JV5608;SPC MD       -   176,782.523   433,134.840   MT  0.99997212   +0 14 27.5
 JV5608;SPC MD       -   579,993.99  1,421,043.22   sFT  0.99997212   +0 14 27.5
 JV5608;UTM  18      - 4,346,717.448   360,567.515   MT  0.99983938   -1 01 22.3
 JV5608
 JV5608!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5608!SPC MD       -   1.00000518  x   0.99997212  =   0.99997730
 JV5608!UTM  18      -   1.00000518  x   0.99983938  =   0.99984456
 JV5608
 JV5608:                Primary Azimuth Mark                     Grid Az
 JV5608:SPC MD       -  BALTIMORE BROMO SELTZER CLKTWR           352 50 09.6
 JV5608:UTM  18      -  BALTIMORE BROMO SELTZER CLKTWR           354 05 59.4
 JV5608
 JV5608_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6056746717(NAD 83)
 JV5608
 JV5608|---------------------------------------------------------------------|
 JV5608| PID    Reference Object                     Distance      Geod. Az  |
 JV5608|                                                           dddmmss.s |
 JV5608| JV5496 BALTIMORE TV STATION WMAR MAST      APPROX. 3.4 KM 0025753.9 |
 JV5608| JV5565 MARYLAND CASUALTY TOWER             APPROX. 3.5 KM 0064031.2 |
 JV5608| JV5564 LOCKE TANK                          409.890 METERS 0692659.1 |
 JV5608| JV5591 HANOVER ST BRIDGE NE TOWER CUP       64.165 METERS 17656     |
 JV5608| JV5686 INCINERATOR PLANT N STACK           APPROX. 1.1 KM 1814129.1 |
 JV5608| JV5685 INCINERATOR PLANT S STACK           APPROX. 1.2 KM 1822002.1 |
 JV5608| JV5614 BALTIMORE WFBR W RADIO MAST         APPROX. 0.9 KM 2590821.7 |
 JV5608| JV5503 BALTIMORE BROMO SELTZER CLKTWR      APPROX. 3.3 KM 3530437.1 |
 JV5608| JV5506 BALTIMORE LORD BALTIMORE HOTEL      APPROX. 3.5 KM 3595620.2 |
 JV5608|---------------------------------------------------------------------|
 JV5608
 JV5608                          SUPERSEDED SURVEY CONTROL
 JV5608
 JV5608  NAD 83(1986)-  39 15 30.90877(N)    076 36 57.91241(W) AD(       ) 3
 JV5608  NAD 27      -  39 15 30.52394(N)    076 36 59.02149(W) AD(       ) 3
 JV5608
 JV5608.Superseded values are not recommended for survey control.
 JV5608
 JV5608.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5608.See file dsdata.pdf to determine how the superseded data were derived.
 JV5608
 JV5608_MARKER: DS = TRIANGULATION STATION DISK
 JV5608_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV5608_SP_SET: SIDEWALK
 JV5608_STAMPING: CURB 2 1971
 JV5608_MARK LOGO: CGS
 JV5608_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5608
 JV5608  HISTORY     - Date     Condition        Report By
 JV5608  HISTORY     - 1975     MONUMENTED       NGS
 JV5608
 JV5608                          STATION DESCRIPTION
 JV5608
 JV5608'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV5608'A TRIANGULATION STATION DISK STAMPED CURB 2 1971 WAS FOUND IN THE
 JV5608'WEST SIDEWALK OF THE HANOVER STREET BRIDGE.  NO DATA HAS EVER BEEN
 JV5608'SENT INTO THE OFFICE ON THIS STATION AND AN ATTEMPT WAS MADE AT
 JV5608'THIS DATE TO DETERMINE IF THE DISK FOUND HAD BEEN SET IN THE SAME
 JV5608'HORIZONTAL POSITION AS THE OLD STATION CURB 1934.  IT IS BELIEVED
 JV5608'THAT STATION CURB 1934 WAS ORIGINALLY SET IN THE EAST CURB OF THE
 JV5608'BRIDGE AND WAS DESTROYED BY CONSTRUCTION.  IT IS ALSO BELIEVED
 JV5608'THAT THE CONSTRUCTION COMPANY SET A NEW DISK IN THE WEST CURB OF THE
 JV5608'BRIDGE AFTER THE CONSTRUCTION WAS COMPLETED AND THAT WAS THE
 JV5608'DISK FOUND AT THIS DATE.  THE ABOVE THEORY WAS VERIFIED THROUGH
 JV5608'OBSERVATIONS.  THE AZIMUTHS TO SEVERAL INTERSECTION STATIONS WERE
 JV5608'OBSERVED AND THE RESULTS SHOWED THE NEW DISK TO BE IN BEARING
 JV5608'N 70 DEG 03 MIN W, 18.071
 JV5608'METERS IN DISTANCE FROM THE OLD STATION CURB 1934.
 JV5608'
 JV5608'THERE ARE NO OTHER TRIANGULATION OR TRAVERSE STATIONS VISIBLE FROM
 JV5608'THE GROUND AT THIS DATE WHICH COULD BE USED TO ESTABLISH A POSITION
 JV5608'ON THIS STATION.
 JV5608'
 JV5608'A COMPLETE DESCRIPTION OF THE STATION FOLLOWS.
 JV5608'
 JV5608'THE STATION IS LOCATED ON THE WEST CURB OF THE HANOVER STREET BRIDGE,
 JV5608'ABOUT 2 MILES SOUTH OF THE CENTER OF BALTIMORE AND JUST NORTH OF THE
 JV5608'ELEVATION PLATFORM ON THE DRAW BRIDGE.
 JV5608'
 JV5608'THE LOCATION OF THIS STATION IS AN ADEQUATE TO REACH.
 JV5608'
 JV5608'THE STATION MARK IS A STANDARD DISK STAMPED CURB 2 1971, SET IN A
 JV5608'DRILL HOLE IN THE WEST CURB OF THE BRIDGE AND IT IS ABOUT 6 INCHES
 JV5608'HIGHER THAN THE ROAD SURFACE.  IT IS 200 FEET NORTH-NORTHWEST OF
 JV5608'THE MOST NORTHWEST TOWER OF THE BRIDGE, 172 FEET SOUTH-SOUTHWEST OF
 JV5608'THE WEST EDGE OF THE NORTH SAFETY GATE, 30 FEET WEST-NORTHWEST OF
 JV5608'THE CENTER OF STATE HIGHWAY 2 WHERE IT CROSSES OVER THE PATASCO
 JV5608'RIVER AND 1.5 FEET EAST-SOUTHEAST OF THE WEST GUARD RAIL OF THE
 JV5608'BRIDGE.
 JV5608'
 JV5608'THERE ARE NO REFERENCE MARKS AT THIS STATION AS OF THIS DATE.
 JV5608'
 JV5608'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--ON THE HANOVER
 JV5608'STREET BRIDGE IN BALTIMORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6297 ***********************************************************************
 HV6297  DESIGNATION -  CURTIS
 HV6297  PID         -  HV6297
 HV6297  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6297  COUNTRY     -  US
 HV6297  USGS QUAD   -  DEALE OE E (2016)
 HV6297
 HV6297                         *CURRENT SURVEY CONTROL
 HV6297  ______________________________________________________________________
 HV6297* NAD 83(1991) POSITION- 38 51 12.91093(N) 076 29 52.81439(W)   ADJUSTED
 HV6297* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6297  ______________________________________________________________________
 HV6297  GEOID HEIGHT    -        -33.519 (meters)                     GEOID18
 HV6297  LAPLACE CORR    -         -3.41  (seconds)                    DEFLEC18
 HV6297  HORZ ORDER      -  THIRD
 HV6297
 HV6297.The horizontal coordinates were established by classical geodetic methods
 HV6297.and adjusted by the National Geodetic Survey in January 1992.
 HV6297
 HV6297.The orthometric height was scaled from a topographic map.
 HV6297
 HV6297.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6297.GEOID18 height accuracy estimate available here.
 HV6297
 HV6297.Click photographs - Photos may exist for this station.
 HV6297
 HV6297.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6297
 HV6297. The following values were computed from the NAD 83(1991) position.
 HV6297
 HV6297;                    North         East     Units Scale Factor Converg.
 HV6297;SPC MD       -   131,872.842   443,573.186   MT  0.99994992   +0 18 54.3
 HV6297;SPC MD       -   432,652.82  1,455,289.69   sFT  0.99994992   +0 18 54.3
 HV6297;UTM  18      - 4,301,595.230   370,015.111   MT  0.99980806   -0 56 23.6
 HV6297
 HV6297!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6297!SPC MD       -   1.00000530  x   0.99994992  =   0.99995522
 HV6297!UTM  18      -   1.00000530  x   0.99980806  =   0.99981336
 HV6297
 HV6297:                Primary Azimuth Mark                     Grid Az
 HV6297:SPC MD       -  BLOODY POINT BAR LH                      103 07 49.2
 HV6297:UTM  18      -  BLOODY POINT BAR LH                      104 23 07.1
 HV6297
 HV6297_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7001501595(NAD 83)
 HV6297
 HV6297|---------------------------------------------------------------------|
 HV6297| PID    Reference Object                     Distance      Geod. Az  |
 HV6297|                                                           dddmmss.s |
 HV6297| HV6299 BLOODY POINT BAR LH                 APPROX. 9.5 KM 1032643.5 |
 HV6297| CX2667 CURTIS RP                            10.820 METERS 12628     |
 HV6297| HV7179 B BETA                              APPROX. 1.5 KM 2630722.5 |
 HV6297|---------------------------------------------------------------------|
 HV6297
 HV6297                          SUPERSEDED SURVEY CONTROL
 HV6297
 HV6297  NAD 83(1986)-  38 51 12.90792(N)    076 29 52.82677(W) AD(       ) 3
 HV6297  NAD 27      -  38 51 12.50600(N)    076 29 53.98200(W) AD(       ) 3
 HV6297  USSD        -  38 51 12.87200(N)    076 29 53.80000(W) AD(       ) 3
 HV6297
 HV6297.Superseded values are not recommended for survey control.
 HV6297
 HV6297.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6297.See file dsdata.pdf to determine how the superseded data were derived.
 HV6297
 HV6297_MARKER: N = NAIL
 HV6297_SETTING: 0 = UNSPECIFIED SETTING
 HV6297
 HV6297  HISTORY     - Date     Condition        Report By
 HV6297  HISTORY     - 1906     MONUMENTED       MDSFC
 HV6297  HISTORY     - 1930     SEE DESCRIPTION  MDDNR
 HV6297
 HV6297                          STATION DESCRIPTION
 HV6297
 HV6297'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV6297'ON S SIDE OF ENTRANCE TO WEST RIVER, ON W SIDE OF CURTIS POINT, N
 HV6297'OF ENTRANCE TO PARISH CREEK, AND ABOUT 250 YARDS NW OF A HOUSE
 HV6297'STANDING BACK IN THE WOODS, ABOUT 10 FEET ABOVE AND 6 FEET BACK
 HV6297'FROM EDGE OF BLUFF.  STATION MARK IS NAIL IN PINE STUB FLUSH WITH
 HV6297'SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE
 HV6297'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6297'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV6297'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HV6297'ARE COUNTER-SUNK IN TOP OF POST.  IT IS 10.82 METERS (35.5 FEET)
 HV6297'FROM STATION S 53 DEG 32 MIN E.  DISTANCES AND
 HV6297'BEARINGS FROM THE STATION TO OTHER POINTS OF REFERENCE ARE AS
 HV6297'FOLLOWS--PEAK OF WHITE HOUSE ON OPPOSITE SHORE, 2 MILES, N 3
 HV6297'DEG 53 MIN W.  S PEAK OF WHARF HOUSE, 1/2 MILE, S 63 DEG 56
 HV6297'MIN W.  E CHIMNEY OF YELLOW HOUSE, 3/4 MILE, S 72 DEG 14 MIN W.
 HV6297'NAIL IN BLAZE IN 4-INCH GUM TREE, 13.63 METERS (44.7 FEET),
 HV6297'S 61 DEG 31 MIN E.  NAIL IN BLAZE IN 5-INCH LOCUST TREE, 15.65
 HV6297'METERS (51.3 FEET), S 11 DEG 40 MIN E.
 HV6297
 HV6297                          STATION RECOVERY (1930)
 HV6297
 HV6297'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6297'STATION WASHED AWAY.  NEW ONE SET UP ON SAME POINT BUT NOT
 HV6297'FINALLY CHARTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6840 ***********************************************************************
 HV6840  DESIGNATION -  CURTIS
 HV6840  PID         -  HV6840
 HV6840  STATE/COUNTY-  MD/ST MARYS
 HV6840  COUNTRY     -  US
 HV6840  USGS QUAD   -  MECHANICSVILLE (2016)
 HV6840
 HV6840                         *CURRENT SURVEY CONTROL
 HV6840  ______________________________________________________________________
 HV6840* NAD 83(1993) POSITION- 38 29 05.99815(N) 076 42 04.82389(W)   ADJUSTED
 HV6840* NAVD 88 ORTHO HEIGHT -    43.    (meters)      141.    (feet) SCALED
 HV6840  ______________________________________________________________________
 HV6840  GEOID HEIGHT    -        -33.677 (meters)                     GEOID18
 HV6840  LAPLACE CORR    -         -3.56  (seconds)                    DEFLEC18
 HV6840  HORZ ORDER      -  SECOND
 HV6840
 HV6840.The horizontal coordinates were established by classical geodetic methods
 HV6840.and adjusted by the National Geodetic Survey in November 1994.
 HV6840
 HV6840.The orthometric height was scaled from a topographic map.
 HV6840
 HV6840.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6840.GEOID18 height accuracy estimate available here.
 HV6840
 HV6840.Click photographs - Photos may exist for this station.
 HV6840
 HV6840.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6840
 HV6840. The following values were computed from the NAD 83(1993) position.
 HV6840
 HV6840;                    North         East     Units Scale Factor Converg.
 HV6840;SPC MD       -    90,880.852   426,057.592   MT  0.99997297   +0 11 14.8
 HV6840;SPC MD       -   298,164.93  1,397,823.95   sFT  0.99997297   +0 11 14.8
 HV6840;UTM  18      - 4,261,000.204   351,611.041   MT  0.99987117   -1 03 32.2
 HV6840
 HV6840!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6840!SPC MD       -   0.99999858  x   0.99997297  =   0.99997155
 HV6840!UTM  18      -   0.99999858  x   0.99987117  =   0.99986975
 HV6840
 HV6840:                Primary Azimuth Mark                     Grid Az
 HV6840:SPC MD       -  CURTIS AZ MK                             300 01 46.6
 HV6840:UTM  18      -  CURTIS AZ MK                             301 16 33.6
 HV6840
 HV6840_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5161161000(NAD 83)
 HV6840
 HV6840|---------------------------------------------------------------------|
 HV6840| PID    Reference Object                     Distance      Geod. Az  |
 HV6840|                                                           dddmmss.s |
 HV6840| CX2665 CURTIS RM 1                          33.442 METERS 21342     |
 HV6840| CX2664 CURTIS AZ MK                                       3001301.4 |
 HV6840| CX2666 CURTIS RM 2                          39.691 METERS 34750     |
 HV6840|---------------------------------------------------------------------|
 HV6840
 HV6840                          SUPERSEDED SURVEY CONTROL
 HV6840
 HV6840  NAD 83(1991)-  38 29 05.99793(N)    076 42 04.82578(W) AD(       ) 2
 HV6840  NAD 83(1986)-  38 29 05.99750(N)    076 42 04.83939(W) AD(       ) 2
 HV6840  NAD 27      -  38 29 05.55378(N)    076 42 05.97348(W) AD(       ) 2
 HV6840
 HV6840.Superseded values are not recommended for survey control.
 HV6840
 HV6840.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6840.See file dsdata.pdf to determine how the superseded data were derived.
 HV6840
 HV6840_MARKER: DS = TRIANGULATION STATION DISK
 HV6840_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6840_STAMPING: CURTIS 1943
 HV6840_MARK LOGO: CGS
 HV6840_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6840+STABILITY: SURFACE MOTION
 HV6840
 HV6840  HISTORY     - Date     Condition        Report By
 HV6840  HISTORY     - 1943     MONUMENTED       CGS
 HV6840  HISTORY     - 1955     GOOD             LOCSUR
 HV6840  HISTORY     - 1989     GOOD             MDDNR
 HV6840
 HV6840                          STATION DESCRIPTION
 HV6840
 HV6840'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV6840'THE STATION IS LOCATED ON A HIGH WOODED RIDGE, OVERLOOKING THE
 HV6840'PATUXENT RIVER, 4-1/2 MILES, AIRLINE, EAST OF OAK AND 4-1/2 MILES,
 HV6840'AIRLINE, EAST NORTHEAST OF NEW MARKET, ON LAND OWNED BY L.
 HV6840'CURTIS. IT IS 56.1 FEET, EAST OF A 4-FOOT OAK TREE BEARING A
 HV6840'TRIANGULAR BLAZE.  IT IS STAMPED CURTIS 1943 AND PROJECT 12 INCHES.
 HV6840'
 HV6840'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 HV6840'DISKS SET IN CONCRETE AS DESCRIBED.
 HV6840'
 HV6840'REFERENCE MARK NO. 1 IS SOUTHWEST OF THE STATION.  IT IS STAMPED
 HV6840'CURTIS NO. 1 1943 AND PROJECTS 6 INCHES.
 HV6840'
 HV6840'REFERENCE MARK NO. 2 IS NORTHWEST OF THE STATION, 7 FEET WEST OF
 HV6840'THE CENTER OF THE WOODS ROAD.  IT IS STAMPED CURTIS NO. 2 1943 AND
 HV6840'PROJECTS 6 INCHES.
 HV6840'
 HV6840'THE AZIMUTH MARK IS 0.65 MILE, BY ROAD, WEST NORTHWEST OF THE
 HV6840'STATION, 11 FEET SOUTHWEST OF THE CENTER OF THE ROAD LEADING TO
 HV6840'THE STATION.  IT IS STAMPED CURTIS 1943 AND PROJECTS 10 INCHES.
 HV6840'DUE TO TALL TIMBER AND HEAVY BRUSH THE MARK WILL NOT BE VISIBLE
 HV6840'FROM THE GROUND.
 HV6840'
 HV6840'TO REACH THE STATION FROM THE CHARLOTTE HALL POST OFFICE, GO NORTH
 HV6840'FOR 1.4 MILES TO A GRAVEL ROAD RIGHT.  TURN RIGHT AND GO 0.05
 HV6840'MILES TO A T-ROAD RIGHT.  TURN RIGHT AND GO 0.05 MILE TO A T-ROAD
 HV6840'RIGHT. TURN RIGHT AND GO 0.05 MILE TO THE NEW HIGHWAY, CROSS AND
 HV6840'CONTINUE FOR 2.70 MILES TO A FORKS, KEEP LEFT AND GO 1.15 MILES,
 HV6840'KEEP RIGHT AND GO 0.7 MILE TO THE AZIMUTH MARK ON THE RIGHT.
 HV6840'CONTINUE STRAIGHT AHEAD FOR 0.65 MILE TO A WOODS ROAD RIGHT.  TURN
 HV6840'RIGHT AND GO 0.05 MILE TO THE STATION ON THE LEFT AS DESCRIBED.
 HV6840'
 HV6840'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION CHARLOTTE
 HV6840'HALL 1942.
 HV6840'
 HV6840'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION ROBERTS.
 HV6840'
 HV6840'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION DOWELL.
 HV6840'
 HV6840'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION SIMS.
 HV6840'
 HV6840'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION LAUREL.
 HV6840'
 HV6840'HEIGHT OF LIGHT ABOVE LIGHT ABOVE STATION MARK--34 METERS.
 HV6840
 HV6840                          STATION RECOVERY (1955)
 HV6840
 HV6840'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1955 (WS)
 HV6840'STATION, STAMPED CURTIS 1943, RECOVERED IN EXCELLENT CONDITION.
 HV6840'BY W. SUITT, J. R. MCCRONE JR., INC.
 HV6840
 HV6840                          STATION RECOVERY (1989)
 HV6840
 HV6840'RECOVERY NOTE BY MD DEPT OF NAT RES 1989 (LW)
 HV6840'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5701 ***********************************************************************
 JV5701  DESIGNATION -  CURTIS
 JV5701  PID         -  JV5701
 JV5701  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5701  COUNTRY     -  US
 JV5701  USGS QUAD   -  CURTIS BAY (2016)
 JV5701
 JV5701                         *CURRENT SURVEY CONTROL
 JV5701  ______________________________________________________________________
 JV5701* NAD 83(1991) POSITION- 39 12 36.52119(N) 076 34 56.49114(W)   ADJUSTED
 JV5701* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5701  ______________________________________________________________________
 JV5701  GEOID HEIGHT    -        -32.900 (meters)                     GEOID18
 JV5701  LAPLACE CORR    -         -4.53  (seconds)                    DEFLEC18
 JV5701  HORZ ORDER      -  THIRD
 JV5701
 JV5701.The horizontal coordinates were established by classical geodetic methods
 JV5701.and adjusted by the National Geodetic Survey in January 1992.
 JV5701
 JV5701.The orthometric height was scaled from a topographic map.
 JV5701
 JV5701.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5701.GEOID18 height accuracy estimate available here.
 JV5701
 JV5701.Click photographs - Photos may exist for this station.
 JV5701
 JV5701.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5701
 JV5701. The following values were computed from the NAD 83(1991) position.
 JV5701
 JV5701;                    North         East     Units Scale Factor Converg.
 JV5701;SPC MD       -   171,417.492   436,070.184   MT  0.99996683   +0 15 43.7
 JV5701;SPC MD       -   562,392.22  1,430,673.60   sFT  0.99996683   +0 15 43.7
 JV5701;UTM  18      - 4,341,289.743   363,383.493   MT  0.99982981   -1 00 01.7
 JV5701
 JV5701!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5701!SPC MD       -   1.00000504  x   0.99996683  =   0.99997187
 JV5701!UTM  18      -   1.00000504  x   0.99982981  =   0.99983485
 JV5701
 JV5701:                Primary Azimuth Mark                     Grid Az
 JV5701:SPC MD       -  FLOOD HB                                 026 51 32.4
 JV5701:UTM  18      -  FLOOD HB                                 028 07 17.8
 JV5701
 JV5701_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6338341289(NAD 83)
 JV5701
 JV5701|---------------------------------------------------------------------|
 JV5701| PID    Reference Object                     Distance      Geod. Az  |
 JV5701|                                                           dddmmss.s |
 JV5701| JV5720 WAGNERS CHURCH SPIRE                APPROX. 2.6 KM 0260522.0 |
 JV5701| JV5711 FLOOD HB                            APPROX. 0.7 KM 0270716.1 |
 JV5701| JV5710 CREEK 1915                          436.103 METERS 1363240.8 |
 JV5701|---------------------------------------------------------------------|
 JV5701
 JV5701                          SUPERSEDED SURVEY CONTROL
 JV5701
 JV5701  NAD 83(1986)-  39 12 36.51753(N)    076 34 56.50052(W) AD(       ) 3
 JV5701  NAD 27      -  39 12 36.12900(N)    076 34 57.62500(W) AD(       ) 3
 JV5701  USSD        -  39 12 36.49300(N)    076 34 57.46700(W) AD(       ) 3
 JV5701
 JV5701.Superseded values are not recommended for survey control.
 JV5701
 JV5701.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5701.See file dsdata.pdf to determine how the superseded data were derived.
 JV5701
 JV5701
 JV5701  HISTORY     - Date     Condition        Report By
 JV5701  HISTORY     - 1915     MONUMENTED       CGS
 JV5701  HISTORY     - 1924     POOR             CGS
 JV5701
 JV5701                          STATION DESCRIPTION
 JV5701
 JV5701'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5701'ON THE W SIDE OF CURTIS CREEK, ABOUT 1/4 MILE N OF BRIDGE, ON
 JV5701'AN OLD (OYSTER SHELL FILL) WHARF.  IT IS 82.42 FEET FROM THE SE
 JV5701'CORNER OF WHARF, 86.11 FEET FROM NE CORNER, AND 59.32 FEET FROM
 JV5701'OUTSIDE FACE.  STATION MARKED BY A STANDARD DISK SET IN A
 JV5701'CONCRETE MONUMENT WITH TOP FLUSH WITH
 JV5701'GROUND.  REFERENCE MARK IS A GRANITE POST PROJECTING 6 INCHES
 JV5701'ABOVE THE GROUND.  THIS IS A BOUNDARY MONUMENT OF THE STOLL
 JV5701'PROPERTY AND HAS THE INITIAL S CARVED ON IT.  IT IS 60.905
 JV5701'METERS (199.82 FEET) FROM THE STATION S 77 DEG 56
 JV5701'MIN W.  AN IRON PUMP BACK FROM THE WHARF IS 52.513 METERS
 JV5701'(172.28 FEET) FROM THE STATION N 72 DEG 34 MIN W.  IN
 JV5701'1924 THIS STATION WAS RECOVERED IN A DAMAGED CONDITION.  THE
 JV5701'TOP OF THE CONCRETE CONTAINING THE MARKER BROKEN OFF.  THE
 JV5701'REFERENCE MARK IN GOOD CONDITION.  THE PROPERTY NOW BELONGS
 JV5701'TO THE AMERICAN OIL COMPANY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4332 ***********************************************************************
 DS4332  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4332  DESIGNATION -  CURTIS
 DS4332  PID         -  DS4332
 DS4332  STATE/COUNTY-  MD/ANNE ARUNDEL
 DS4332  COUNTRY     -  US
 DS4332  USGS QUAD   -  CURTIS BAY (2016)
 DS4332
 DS4332                         *CURRENT SURVEY CONTROL
 DS4332  ______________________________________________________________________
 DS4332* NAD 83(2011) POSITION- 39 12 23.42926(N) 076 35 49.90571(W)   ADJUSTED
 DS4332* NAD 83(2011) ELLIP HT-    -6.604 (meters)        (01/30/26)   ADJUSTED
 DS4332* NAD 83(2011) EPOCH   -  2010.00
 DS4332* NAVD 88 ORTHO HEIGHT -    26.27  (meters)       86.2   (feet) GPS OBS
 DS4332  ______________________________________________________________________
 DS4332  GEOID HEIGHT    -        -32.867 (meters)                     GEOID18
 DS4332  NAD 83(2011) X  -  1,147,124.067 (meters)                     COMP
 DS4332  NAD 83(2011) Y  - -4,814,077.777 (meters)                     COMP
 DS4332  NAD 83(2011) Z  -  4,010,103.662 (meters)                     COMP
 DS4332  LAPLACE CORR    -         -5.03  (seconds)                    DEFLEC18
 DS4332
 DS4332  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4332  Standards:
 DS4332         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4332            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4332  -------------------------------------------------------------------
 DS4332  NETWORK    0.79   1.78           0.35   0.29   0.91     -0.16304887
 DS4332  -------------------------------------------------------------------
 DS4332  Click here for local accuracies and other accuracy information.
 DS4332
 DS4332.The horizontal coordinates were established by GPS observations
 DS4332.and adjusted by the MD DOT HIGHWAY ADMIN in January 2026.
 DS4332
 DS4332.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4332.frame has been affixed to the stable North American tectonic plate 
 DS4332
 DS4332.The horizontal coordinates are valid at the epoch date displayed above
 DS4332.which is a decimal equivalence of Year/Month/Day.
 DS4332
 DS4332.The orthometric height was determined by GPS observations and a
 DS4332.high-resolution geoid model using precise GPS observation and
 DS4332.processing techniques.
 DS4332
 DS4332.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4332.GEOID18 height accuracy estimate available here.
 DS4332
 DS4332.Click photographs - Photos may exist for this station.
 DS4332
 DS4332.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4332
 DS4332.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4332
 DS4332.The ellipsoidal height was determined by GPS observations
 DS4332.and is referenced to NAD 83.
 DS4332
 DS4332. The following values were computed from the NAD 83(2011) position.
 DS4332
 DS4332;                    North         East     Units Scale Factor Converg.
 DS4332;SPC MD       -   171,008.012   434,790.523   MT  0.99996646   +0 15 10.1
 DS4332;SPC MD       -   561,048.79  1,426,475.24   sFT  0.99996646   +0 15 10.1
 DS4332;UTM  18      - 4,340,908.611   362,095.293   MT  0.99983416   -1 00 35.2
 DS4332
 DS4332!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4332!SPC MD       -   1.00000104  x   0.99996646  =   0.99996750
 DS4332!UTM  18      -   1.00000104  x   0.99983416  =   0.99983520
 DS4332
 DS4332_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6209540908(NAD 83)
 DS4332
 DS4332                          SUPERSEDED SURVEY CONTROL
 DS4332
 DS4332.No superseded survey control is available for this station.
 DS4332
 DS4332_MARKER: DD = SURVEY DISK
 DS4332_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS4332_STAMPING: CURTIS 1995
 DS4332_MARK LOGO: MDSHA
 DS4332_PROJECTION: FLUSH
 DS4332_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS4332+STABILITY: SURFACE MOTION
 DS4332_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4332+SATELLITE: SATELLITE OBSERVATIONS - April 22, 2025
 DS4332
 DS4332  HISTORY     - Date     Condition        Report By
 DS4332  HISTORY     - 19950101 MONUMENTED       MDSHA
 DS4332  HISTORY     - 20250422 GOOD             MDSHA
 DS4332
 DS4332                          STATION DESCRIPTION
 DS4332
 DS4332'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4332'THE MARK IS LOCATED ABOUT 5.9 MI (9.5 KM) EAST-SOUTHEAST OF RELAY, 5.8
 DS4332'MI (9.3 KM) SOUTH OF BALTIMORE AND 1.5 MI (2.4 KM) SOUTH-SOUTHWEST OF
 DS4332'CURTIS BAY.
 DS4332'
 DS4332'TO REACH THE MARK FROM THE INTERSECTION OF HAWKINS POINT ROAD AND
 DS4332'QUARANTINE ROAD TURN ONTO QUARANTINE ROAD AND PROCEED NORTH-WEST FOR
 DS4332'0.3 KM (0.2 MI) TO THE RAMP LEADING TO I 695 WEST.  MERGE ONTO I 695
 DS4332'WEST AND PROCEED FOR 3.34 KM (2.08 MI) TO THE MARK ON THE LEFT.  MARK
 DS4332'IS ON THE I 695 MEDIAN BETWEEN THE BRIDGES OVER THE MD 10 RAMP TO I
 DS4332'695.
 DS4332'
 DS4332'THE MARK IS 41.5 FT (12.6 M) NORTH-NORTHWEST OF THE OUTSIDE CORNER OF
 DS4332'THE BRIDGE PARAPET WALL OVER I 695 EAST BOUND LANES, 30.25 FT (9.2 M)
 DS4332'NORTHWEST OF THE CENTERLINE OF AN INLET IN THE I 695 MEDIAN, 18.05 FT
 DS4332'(5.5 M) SOUTHEAST OF THE OUTSIDE CORNER OF THE BRIDGE PARAPET WALL
 DS4332'OVER I 695 WEST BOUND LANES SET IN THE TOP OF A 10-IN (25 CM) ROUND
 DS4332'CONCRETE POST AND ABOUT LEVEL WITH THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5670 ***********************************************************************
 JV5670  DESIGNATION -  CURTIS BAY TANK
 JV5670  PID         -  JV5670
 JV5670  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5670  COUNTRY     -  US
 JV5670  USGS QUAD   -  CURTIS BAY (2016)
 JV5670
 JV5670                         *CURRENT SURVEY CONTROL
 JV5670  ______________________________________________________________________
 JV5670* NAD 83(1991) POSITION- 39 13 29.26470(N) 076 35 33.78766(W)   ADJUSTED
 JV5670  ______________________________________________________________________
 JV5670  GEOID HEIGHT    -        -32.862 (meters)                     GEOID18
 JV5670  LAPLACE CORR    -         -4.92  (seconds)                    DEFLEC18
 JV5670  HORZ ORDER      -  THIRD
 JV5670
 JV5670.The horizontal coordinates were established by classical geodetic methods
 JV5670.and adjusted by the National Geodetic Survey in January 1992.
 JV5670
 JV5670.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5670.GEOID18 height accuracy estimate available here.
 JV5670
 JV5670.Click photographs - Photos may exist for this station.
 JV5670
 JV5670.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5670
 JV5670. The following values were computed from the NAD 83(1991) position.
 JV5670
 JV5670;                    North         East     Units Scale Factor Converg.
 JV5670;SPC MD       -   173,039.926   435,168.165   MT  0.99996835   +0 15 20.2
 JV5670;SPC MD       -   567,715.16  1,427,714.22   sFT  0.99996835   +0 15 20.2
 JV5670;UTM  18      - 4,342,931.438   362,517.566   MT  0.99983273   -1 00 26.4
 JV5670
 JV5670_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6251742931(NAD 83)
 JV5670
 JV5670                          SUPERSEDED SURVEY CONTROL
 JV5670
 JV5670  NAD 83(1986)-  39 13 29.26068(N)    076 35 33.79691(W) AD(       ) 3
 JV5670  NAD 27      -  39 13 28.87600(N)    076 35 34.92200(W) AD(       ) 3
 JV5670
 JV5670.Superseded values are not recommended for survey control.
 JV5670
 JV5670.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5670.See file dsdata.pdf to determine how the superseded data were derived.
 JV5670
 JV5670_MARKER: 53 = ELEVATED TANK
 JV5670
 JV5670  HISTORY     - Date     Condition        Report By
 JV5670  HISTORY     - 1933     FIRST OBSERVED   CGS
 JV5670  HISTORY     - 1957     GOOD             CGS
 JV5670  HISTORY     - 1975     GOOD             NGS
 JV5670  HISTORY     - 1984     GOOD             USPSQD
 JV5670  HISTORY     - 20050709 GOOD             GEOCAC
 JV5670
 JV5670                          STATION DESCRIPTION
 JV5670
 JV5670'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5670'STATION IS LOCATED ON A HIGH HILL IN THE VILLAGE OF CURTIS
 JV5670'BAY, ON PROPERTY OF THE CITY OF BALTIMORE.  STATION IS CONSTRUCTED
 JV5670'OF BRICK AND ABOUT 80 FEET TALL.  THE POINT INTERSECTED WAS THE
 JV5670'TOP OF TANK.
 JV5670'
 JV5670'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND STATE
 JV5670'HIGHWAY 2, JUST NORTH OF GLEN BURNIE, GO NORTH OF U.S. HIGHWAY 301
 JV5670'AND STATE HIGHWAY 2 FOR 0.9 MILE TO TRAFFIC LIGHT.  TURN RIGHT ON
 JV5670'STATE ROUTE 710 FOR 1.7 MILES TO A T INTERSECTION.  TURN LEFT AND
 JV5670'GO 0.85 MILE TO TRAFFIC LIGHT AT CHURCH STREET.  TURN LEFT AND
 JV5670'GO 0.25 MILE TO A SIDE STREET RIGHT.  TURN RIGHT ON WEST BAY
 JV5670'STREET AND GO NORTH FOR 0.15 MILE TO STATION AS DESCRIBED.
 JV5670
 JV5670                          STATION RECOVERY (1975)
 JV5670
 JV5670'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5670'STATION WAS RECOVERED IN GOOD CONDITION.  THIS STATION APPEARS TO
 JV5670'BE THE SAME ONE AS LOCATED IN 1933 CALLED BALTIMORE WATER WORKS
 JV5670'LARGE ROUND RESERVOIR.  CURTIS BAY TANK WAS BUILT IN THE 1920S
 JV5670'ACCORDING TO A PLAQUE ON THE SIDE OF THE TANK AND THE POSITION OF
 JV5670'1933 IS X=915,295 Y=506,968, THE POSITION OF 1957 IS X=915,
 JV5670'294.77, Y=506,965.53.  IT THEREFORE IS BELIEVED THAT THESE ARE
 JV5670'THE SAME TANK.
 JV5670
 JV5670                          STATION RECOVERY (1984)
 JV5670
 JV5670'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5670'TANK LOCATION AS DESCRIBED ON HORIZONAL CONTROL DATA SHEET DATED
 JV5670'JULY 1977, TANK NOW ENCLOSED BY A FENCE.
 JV5670
 JV5670                          STATION RECOVERY (2005)
 JV5670
 JV5670'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 JV5670'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1192 ***********************************************************************
 JV1192  DESIGNATION -  CURTIS WRIGHT AIRPORT
 JV1192  PID         -  JV1192
 JV1192  STATE/COUNTY-  MD/BALTIMORE
 JV1192  COUNTRY     -  US
 JV1192  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1192
 JV1192                         *CURRENT SURVEY CONTROL
 JV1192  ______________________________________________________________________
 JV1192* NAD 83(1986) POSITION- 39 22 29.     (N) 076 41 28.     (W)   SCALED
 JV1192* NAVD 88 ORTHO HEIGHT -   136.691 (meters)      448.46  (feet) ADJUSTED
 JV1192  ______________________________________________________________________
 JV1192  GEOID HEIGHT    -        -32.374 (meters)                     GEOID18
 JV1192  DYNAMIC HEIGHT  -        136.619 (meters)      448.22  (feet) COMP
 JV1192  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV1192
 JV1192  VERT ORDER      -  SECOND    CLASS 0
 JV1192
 JV1192.The horizontal coordinates were scaled from a map and have
 JV1192.an estimated accuracy of +/- 6 seconds.
 JV1192
 JV1192.The orthometric height was determined by differential leveling and
 JV1192.adjusted by the NATIONAL GEODETIC SURVEY
 JV1192.in June 1991.
 JV1192
 JV1192.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1192.GEOID18 height accuracy estimate available here.
 JV1192
 JV1192.Click photographs - Photos may exist for this station.
 JV1192
 JV1192.The dynamic height is computed by dividing the NAVD 88
 JV1192.geopotential number by the normal gravity value computed on the
 JV1192.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1192.degrees latitude (g = 980.6199 gals.).
 JV1192
 JV1192.The modeled gravity was interpolated from observed gravity values.
 JV1192
 JV1192;                    North         East    Units  Estimated Accuracy
 JV1192;SPC MD       -   189,650.      426,620.      MT  (+/- 180 meters Scaled)
 JV1192
 JV1192_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ543597(NAD 83)
 JV1192
 JV1192                          SUPERSEDED SURVEY CONTROL
 JV1192
 JV1192  NGVD 29 (11/26/84)  136.918  (m)          449.21   (f) ADJUSTED    2 0
 JV1192
 JV1192.Superseded values are not recommended for survey control.
 JV1192
 JV1192.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1192.See file dsdata.pdf to determine how the superseded data were derived.
 JV1192
 JV1192_MARKER: DB = BENCH MARK DISK
 JV1192_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1192_STAMPING: CURTIS WRIGHT AIRPORT 1942
 JV1192_MARK LOGO: CGS
 JV1192_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1192+STABILITY: SURFACE MOTION
 JV1192
 JV1192  HISTORY     - Date     Condition        Report By
 JV1192  HISTORY     - 1942     MONUMENTED       CGS
 JV1192
 JV1192                          STATION DESCRIPTION
 JV1192
 JV1192'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1192'2 MI NE FROM MOUNT WASHINGTON.
 JV1192'THIS MARK IS ABOUT 2.05 MILES NORTHEAST OF THE RAILROAD STATION
 JV1192'AT MOUNT WASHINGTON, AND ABOUT 2.3 MILES EAST OF PIKESVILLE,
 JV1192'BALTIMORE COUNTY, SET ON THE NORTH SIDE OF THE EAST HANGAR, BETWEEN
 JV1192'POWER POLE NUMBER 97319 AND 97320, 2.0 FEET SOUTH OF POLE NUMBER
 JV1192'97319, 30.4 FEET NORTH OF THE NORTH SIDE OF THE HANGAR, NEAR A
 JV1192'WHITE REFERENCE POST.  A BRONZE DISK SET IN TOP OF A CONCRETE
 JV1192'POST, STAMPED CURTIS-WRIGHT AIRPORT 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6445 ***********************************************************************
 HV6445  DESIGNATION -  CUSICK
 HV6445  PID         -  HV6445
 HV6445  STATE/COUNTY-  MD/DORCHESTER
 HV6445  COUNTRY     -  US
 HV6445  USGS QUAD   -  GOLDEN HILL (2016)
 HV6445
 HV6445                         *CURRENT SURVEY CONTROL
 HV6445  ______________________________________________________________________
 HV6445* NAD 83(1991) POSITION- 38 23 05.03092(N) 076 11 40.34374(W)   ADJUSTED
 HV6445* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6445  ______________________________________________________________________
 HV6445  GEOID HEIGHT    -        -35.097 (meters)                     GEOID18
 HV6445  LAPLACE CORR    -         -5.37  (seconds)                    DEFLEC18
 HV6445  HORZ ORDER      -  FIRST
 HV6445
 HV6445.The horizontal coordinates were established by classical geodetic methods
 HV6445.and adjusted by the National Geodetic Survey in January 1992.
 HV6445
 HV6445.The orthometric height was scaled from a topographic map.
 HV6445
 HV6445.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6445.GEOID18 height accuracy estimate available here.
 HV6445
 HV6445.Click photographs - Photos may exist for this station.
 HV6445
 HV6445.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6445
 HV6445. The following values were computed from the NAD 83(1991) position.
 HV6445
 HV6445;                    North         East     Units Scale Factor Converg.
 HV6445;SPC MD       -    80,018.619   470,372.470   MT  0.99998634   +0 30 19.9
 HV6445;SPC MD       -   262,527.75  1,543,213.68   sFT  0.99998634   +0 30 19.9
 HV6445;UTM  18      - 4,249,178.467   395,671.120   MT  0.99973404   -0 44 30.5
 HV6445
 HV6445!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6445!SPC MD       -   1.00000538  x   0.99998634  =   0.99999172
 HV6445!UTM  18      -   1.00000538  x   0.99973404  =   0.99973942
 HV6445
 HV6445:                Primary Azimuth Mark                     Grid Az
 HV6445:SPC MD       -  CUSICK AZ MK                             305 34 24.4
 HV6445:UTM  18      -  CUSICK AZ MK                             306 49 14.8
 HV6445
 HV6445_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9567149178(NAD 83)
 HV6445
 HV6445|---------------------------------------------------------------------|
 HV6445| PID    Reference Object                     Distance      Geod. Az  |
 HV6445|                                                           dddmmss.s |
 HV6445| CX2668 CUSICK RM 1                          27.890 METERS 03507     |
 HV6445| HV8056 CUSICK AZ MK                                       3060444.3 |
 HV6445| CX2669 CUSICK RM 2                          26.155 METERS 32542     |
 HV6445|---------------------------------------------------------------------|
 HV6445
 HV6445                          SUPERSEDED SURVEY CONTROL
 HV6445
 HV6445  NAD 83(1986)-  38 23 05.02917(N)    076 11 40.36079(W) AD(       ) 1
 HV6445  NAD 27      -  38 23 04.59100(N)    076 11 41.56200(W) AD(       ) 1
 HV6445
 HV6445.Superseded values are not recommended for survey control.
 HV6445
 HV6445.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6445.See file dsdata.pdf to determine how the superseded data were derived.
 HV6445
 HV6445_MARKER: DS = TRIANGULATION STATION DISK
 HV6445_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6445_STAMPING: CUSICK 1942
 HV6445_MARK LOGO: CGS
 HV6445_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6445+STABILITY: SURFACE MOTION
 HV6445
 HV6445  HISTORY     - Date     Condition        Report By
 HV6445  HISTORY     - 1942     MONUMENTED       CGS
 HV6445
 HV6445                          STATION DESCRIPTION
 HV6445
 HV6445'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6445'STATION IS ABOUT 10 MILES BY ROAD S OF CHURCH CREEK AND 0.1 MILE
 HV6445'SW OF THE JUNCTION OF STATE HIGHWAYS 335 AND 336, IN A FARMYARD AND
 HV6445'ON LAND OWNED BY EDGAR CUSICK.  IT IS 28 FEET W OF THE YARD FENCE
 HV6445'AND 6 FEET SW OF THE PROJECTED PLANE OF THE NE WALL OF THE
 HV6445'FARMHOUSE.  IT IS SET FLUSH WITH THE GROUND AND IS STAMPED
 HV6445'CUSICK 1942.
 HV6445'
 HV6445'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 HV6445'DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HV6445'
 HV6445'REFERENCE MARK NO.1 IS IN THE YARD FENCE, NE OF THE STATION.  IT
 HV6445'PROJECTS ABOUT 4 INCHES AND IS STAMPED CUSICK NO.1 1942.
 HV6445'
 HV6445'REFERENCE MARK NO.2 IS IN THE FENCE LINE OF THE GARDEN PLOT, NW OF
 HV6445'THE STATION.  IT PROJECTS ABOUT 6 INCHES AND IS STAMPED CUSICK
 HV6445'NO.2 1942.
 HV6445'
 HV6445'AZIMUTH MARK IS LOCATED ABOUT 0.3 MILE WNW OF THE STATION, ON THE
 HV6445'LEFT (S) SIDE OF STATE HIGHWAY 335, AND 0.25 MILE W OF THE
 HV6445'JUNCTION OF STATE HIGHWAYS 335 AND 336.  IT IS ABOUT 28 FEET S OF
 HV6445'THE CENTER OF THE HIGHWAY AND 3 FEET E OF A TELEPHONE POLE.  IT
 HV6445'PROJECTS ABOUT 6 INCHES AND IS STAMPED CUSICK 1942.
 HV6445'
 HV6445'TO REACH THE STATION FROM CHURCH CREEK, GO SOUTHERLY ON STATE
 HV6445'HIGHWAY 335 FOR 9.8 MILES TO ITS JUNCTION WITH STATE HIGHWAY
 HV6445'336.  TURN LEFT ON HIGHWAY 336 AND GO 0.1 MILE TO A FARM DRIVEWAY
 HV6445'TO THE RIGHT.  TURN RIGHT AND GO 0.1 MILE TO THE FARMHOUSE AND THE
 HV6445'STATION.
 HV6445'
 HV6445'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION MILLS.
 HV6445'
 HV6445'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION BROOKS.
 HV6445'
 HV6445'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION REFUGE.
 HV6445'
 HV6445'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION SHORTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8056 ***********************************************************************
 HV8056  DESIGNATION -  CUSICK AZ MK
 HV8056  PID         -  HV8056
 HV8056  STATE/COUNTY-  MD/DORCHESTER
 HV8056  COUNTRY     -  US
 HV8056  USGS QUAD   -  GOLDEN HILL (2016)
 HV8056
 HV8056                         *CURRENT SURVEY CONTROL
 HV8056  ______________________________________________________________________
 HV8056* NAD 83(1986) POSITION- 38 23 16.8    (N) 076 12 00.8    (W)   HD_HELD2
 HV8056* NAVD 88 ORTHO HEIGHT -     1.12  (meters)        3.7   (feet) RESET
 HV8056  ______________________________________________________________________
 HV8056  GEOID HEIGHT    -        -35.074 (meters)                     GEOID18
 HV8056  VERT ORDER      -  THIRD
 HV8056
 HV8056.The horizontal coordinates were established by autonomous hand held GPS
 HV8056.observations and have an estimated accuracy of +/- 10 meters.
 HV8056
 HV8056.The orthometric height was computed from unverified reset data.
 HV8056
 HV8056.No vertical observational check was made to the station.
 HV8056
 HV8056.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8056.GEOID18 height accuracy estimate available here.
 HV8056
 HV8056.Click photographs - Photos may exist for this station.
 HV8056
 HV8056;                    North         East    Units  Estimated Accuracy
 HV8056;SPC MD       -    80,377.      469,873.      MT  (+/- 10 meters HH2 GPS)
 HV8056
 HV8056_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9517949547(NAD 83)
 HV8056
 HV8056                          SUPERSEDED SURVEY CONTROL
 HV8056
 HV8056  NGVD 29 (11/26/84)    1.338  (m)            4.39   (f) ADJUSTED       
 HV8056
 HV8056.Superseded values are not recommended for survey control.
 HV8056
 HV8056.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8056.See file dsdata.pdf to determine how the superseded data were derived.
 HV8056
 HV8056_MARKER: DZ = AZIMUTH MARK DISK
 HV8056_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8056_STAMPING: CUSICK 1942
 HV8056_MARK LOGO: CGS
 HV8056_PROJECTION: PROJECTING 15 CENTIMETERS
 HV8056_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8056+STABILITY: SURFACE MOTION
 HV8056_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8056+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2014
 HV8056
 HV8056  HISTORY     - Date     Condition        Report By
 HV8056  HISTORY     - 1942     MONUMENTED       CGS
 HV8056  HISTORY     - 20060326 GOOD             USPSQD
 HV8056  HISTORY     - 20140320 GOOD             ARCSHE
 HV8056
 HV8056                          STATION DESCRIPTION
 HV8056
 HV8056'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV8056'9.95 MI SSW FROM CHURCH CREEK.
 HV8056'LOCATED 16.0 KM (9.95 MI) SOUTH ALONG STATE HIGHWAY 335 FROM THE POST
 HV8056'OFFICE IN CHURCH CREEK, THENCE NORTHWEST 0.4 KM (0.25 MI) ALONG STATE
 HV8056'HIGHWAY 335 FROM ITS JUNCTION WITH STATE HIGHWAY 336, 19.2 METERS
 HV8056'(63.0 FT) SOUTHWEST OF A POWERLINE POLE, 8.1 METERS (26.5 FT) SOUTH-
 HV8056'WEST OF THE CENTER OF STATE HIGHWAY 335, 3.9 METERS (12.7 FT) NORTH-
 HV8056'WEST OF A UNDERGROUND TELEPHONE CABLE MARKER POST NUMBERED 17 AND
 HV8056'2.9 METERS (9.5 FT) SOUTHEAST OF A POWERLINE GUY POLE.
 HV8056
 HV8056                          STATION RECOVERY (2006)
 HV8056
 HV8056'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 HV8056'RECOVERED IN GOOD CONDITION.
 HV8056
 HV8056                          STATION RECOVERY (2014)
 HV8056
 HV8056'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV8056'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4959 ***********************************************************************
 HV4959  DESIGNATION -  CUT
 HV4959  PID         -  HV4959
 HV4959  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4959  COUNTRY     -  US
 HV4959  USGS QUAD   -  MOUNT VERNON (2019)
 HV4959
 HV4959                         *CURRENT SURVEY CONTROL
 HV4959  ______________________________________________________________________
 HV4959* NAD 83(1993) POSITION- 38 44 01.19830(N) 077 01 47.47081(W)   ADJUSTED
 HV4959* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV4959  ______________________________________________________________________
 HV4959  GEOID HEIGHT    -        -32.395 (meters)                     GEOID18
 HV4959  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 HV4959  HORZ ORDER      -  THIRD
 HV4959
 HV4959.The horizontal coordinates were established by classical geodetic methods
 HV4959.and adjusted by the National Geodetic Survey in November 1994.
 HV4959
 HV4959.The orthometric height was scaled from a topographic map.
 HV4959
 HV4959.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4959.GEOID18 height accuracy estimate available here.
 HV4959
 HV4959.Click photographs - Photos may exist for this station.
 HV4959
 HV4959.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4959
 HV4959. The following values were computed from the NAD 83(1993) position.
 HV4959
 HV4959;                    North         East     Units Scale Factor Converg.
 HV4959;SPC MD       -   118,441.589   397,404.397   MT  0.99995291   -0 01 07.5
 HV4959;SPC MD       -   388,587.11  1,303,817.59   sFT  0.99995291   -0 01 07.5
 HV4959;SPC VA N     - 2,119,459.416 3,627,817.806   MT  0.99995043   +0 55 03.2
 HV4959;SPC VA N     - 6,953,593.10 11,902,265.59   sFT  0.99995043   +0 55 03.2
 HV4959;UTM  18      - 4,289,177.879   323,566.337   MT  0.99998334   -1 16 13.5
 HV4959
 HV4959!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4959!SPC MD       -   1.00000481  x   0.99995291  =   0.99995772
 HV4959!SPC VA N     -   1.00000481  x   0.99995043  =   0.99995524
 HV4959!UTM  18      -   1.00000481  x   0.99998334  =   0.99998815
 HV4959
 HV4959:                Primary Azimuth Mark                     Grid Az
 HV4959:SPC MD       -  RIVER                                    185 18 22.3
 HV4959:SPC VA N     -  RIVER                                    184 22 11.6
 HV4959:UTM  18      -  RIVER                                    186 33 28.3
 HV4959
 HV4959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2356689177(NAD 83)
 HV4959
 HV4959|---------------------------------------------------------------------|
 HV4959| PID    Reference Object                     Distance      Geod. Az  |
 HV4959|                                                           dddmmss.s |
 HV4959| DE4962 CUT RM                               11.000 METERS 00423     |
 HV4959| HV4958 BROAD                               APPROX. 0.5 KM 0063019.4 |
 HV4959| HV4970 RIVER                               APPROX. 1.0 KM 1851714.8 |
 HV4959| HV4972 SHERIDAN PT LIGHT                   APPROX. 3.4 KM 2082253.3 |
 HV4959| HV4931 STUCCO HOUSE CHIM N OF COLLINS      APPROX. 1.5 KM 3022920.5 |
 HV4959|---------------------------------------------------------------------|
 HV4959
 HV4959                          SUPERSEDED SURVEY CONTROL
 HV4959
 HV4959  NAD 83(1991)-  38 44 01.19635(N)    077 01 47.47263(W) AD(       ) 3
 HV4959  NAD 83(1986)-  38 44 01.19775(N)    077 01 47.48554(W) AD(       ) 3
 HV4959  NAD 27      -  38 44 00.77600(N)    077 01 48.57600(W) AD(       ) 3
 HV4959
 HV4959.Superseded values are not recommended for survey control.
 HV4959
 HV4959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4959.See file dsdata.pdf to determine how the superseded data were derived.
 HV4959
 HV4959_MARKER: DS = TRIANGULATION STATION DISK
 HV4959_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4959_STAMPING: CUT 1928
 HV4959_MARK LOGO: CGS
 HV4959_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4959+STABILITY: SURFACE MOTION
 HV4959
 HV4959  HISTORY     - Date     Condition        Report By
 HV4959  HISTORY     - 1928     MONUMENTED       CGS
 HV4959  HISTORY     - 1938     POOR             CGS
 HV4959
 HV4959                          STATION DESCRIPTION
 HV4959
 HV4959'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4959'STATION IS ON THE E SHORE OF POTOMAC RIVER ABOUT 500 YARDS S OF
 HV4959'THE POINT THAT MARKS THE S ENTRANCE TO BROAD CREEK AND AT THE
 HV4959'EDGE OF THE HIGH-WATER LINE WHICH REACHES THE TREE LINE AT THIS
 HV4959'POINT.  PROJECTS SEVERAL INCHES ABOVE SURFACE AND STAMPED CUT
 HV4959'1928.  A WOODEN DUCK BLIND LIES 5 METERS (APPROXIMATELY) S OF
 HV4959'STATION AT HIGH-WATER LINE.  MARK PROBABLY COVERED TWO INCHES
 HV4959'AT HIGHER WATERS.
 HV4959'
 HV4959'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV4959'CONCRETE.
 HV4959'
 HV4959'REFERENCE MARK PROJECTS SEVERAL INCHES ABOVE SURFACE AT
 HV4959'HIGH-WATER LINE STAMPED CUT 1928 AND IS N OF STATION.
 HV4959'
 HV4959'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV4959
 HV4959                          STATION RECOVERY (1938)
 HV4959
 HV4959'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV4959'THE SURFACE MARK OF THE STATION WAS FOUND PARTLY DISINTEGRATED.  THE
 HV4959'TOP PART OF THE CONCRETE POST IS BROKEN OFF AND THE BRONZE DISK
 HV4959'IS GONE.  THE MARK HOWEVER IS SOLID, AND DOES NOT APPEAR TO HAVE
 HV4959'BEEN DISTURBED.  THE REFERENCE MARK IS IN GOOD CONDITION.
 HV4959'
 HV4959'THE STATION IS ON THE E SHORE OF THE POTOMAC RIVER, ABOUT 500
 HV4959'YARDS S OF THE S ENTRANCE OF BROAD CREEK, 8 METERS N OF THE N
 HV4959'POINT OF A SMALL COVE, AND 8 METERS S OF THE S END OF A BOX-LIKE
 HV4959'DUCK BLIND.  THE MARK IS 3 METERS OUTSIDE THE 3-FOOT BLUFF WHICH
 HV4959'FORMS THE STORM-WATER LINE AND IS 2 METERS OUTSIDE THE MEAN
 HV4959'HIGH-WATER LINE.  THE REFERENCE MARK IS 2 METERS OFFSHORE FROM
 HV4959'THE 3-FOOT BLUFF AND MEAN HIGH-WATER LINE WHICH COINCIDE HERE,
 HV4959'AND IS 1 METER INSHORE FROM THE DUCK BLIND AT A POINT 1 METER
 HV4959'S OF THE N END OF THE BLIND.
 HV4959'
 HV4959'THE PROPERTY ON WHICH THE MARKS ARE LOCATED IS SAID TO BELONG
 HV4959'TO A MRS. POORE.  THERE IS A SHANTY 17 METERS DIRECTLY INSHORE
 HV4959'FROM THE SITE OF THE MARKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6796 ***********************************************************************
 HV6796  DESIGNATION -  CUT
 HV6796  PID         -  HV6796
 HV6796  STATE/COUNTY-  MD/ST MARYS
 HV6796  COUNTRY     -  US
 HV6796  USGS QUAD   -  HOLLYWOOD (2016)
 HV6796
 HV6796                         *CURRENT SURVEY CONTROL
 HV6796  ______________________________________________________________________
 HV6796* NAD 83(1991) POSITION- 38 21 30.53585(N) 076 30 02.29139(W)   ADJUSTED
 HV6796* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6796  ______________________________________________________________________
 HV6796  GEOID HEIGHT    -        -34.240 (meters)                     GEOID18
 HV6796  LAPLACE CORR    -         -4.71  (seconds)                    DEFLEC18
 HV6796  HORZ ORDER      -  THIRD
 HV6796
 HV6796.The horizontal coordinates were established by classical geodetic methods
 HV6796.and adjusted by the National Geodetic Survey in January 1992.
 HV6796
 HV6796.The orthometric height was scaled from a topographic map.
 HV6796
 HV6796.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6796.GEOID18 height accuracy estimate available here.
 HV6796
 HV6796.Click photographs - Photos may exist for this station.
 HV6796
 HV6796.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6796
 HV6796. The following values were computed from the NAD 83(1991) position.
 HV6796
 HV6796;                    North         East     Units Scale Factor Converg.
 HV6796;SPC MD       -    76,913.878   443,645.319   MT  0.99999034   +0 18 48.3
 HV6796;SPC MD       -   252,341.61  1,455,526.35   sFT  0.99999034   +0 18 48.3
 HV6796;UTM  18      - 4,246,656.235   368,888.582   MT  0.99981170   -0 55 53.0
 HV6796
 HV6796!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6796!SPC MD       -   1.00000526  x   0.99999034  =   0.99999560
 HV6796!UTM  18      -   1.00000526  x   0.99981170  =   0.99981696
 HV6796
 HV6796:                Primary Azimuth Mark                     Grid Az
 HV6796:SPC MD       -  BERT                                     348 51 55.9
 HV6796:UTM  18      -  BERT                                     350 06 37.2
 HV6796
 HV6796_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6888846656(NAD 83)
 HV6796
 HV6796|---------------------------------------------------------------------|
 HV6796| PID    Reference Object                     Distance      Geod. Az  |
 HV6796|                                                           dddmmss.s |
 HV6796| CX2671 CUT RM 2                             14.315 METERS 23538     |
 HV6796| CX2670 CUT RM 1                             18.722 METERS 30526     |
 HV6796| HV6793 BEND                                APPROX. 0.5 KM 3135331.6 |
 HV6796| HV6764 BERT                                APPROX. 3.7 KM 3491044.2 |
 HV6796|---------------------------------------------------------------------|
 HV6796
 HV6796                          SUPERSEDED SURVEY CONTROL
 HV6796
 HV6796  NAD 83(1986)-  38 21 30.53550(N)    076 30 02.30557(W) AD(       ) 3
 HV6796  NAD 27      -  38 21 30.08300(N)    076 30 03.46200(W) AD(       ) 3
 HV6796
 HV6796.Superseded values are not recommended for survey control.
 HV6796
 HV6796.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6796.See file dsdata.pdf to determine how the superseded data were derived.
 HV6796
 HV6796_MARKER: DS = TRIANGULATION STATION DISK
 HV6796_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6796_STAMPING: CUT 1943
 HV6796_MARK LOGO: CGS
 HV6796_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6796
 HV6796  HISTORY     - Date     Condition        Report By
 HV6796  HISTORY     - 1943     MONUMENTED       CGS
 HV6796  HISTORY     - 1960     GOOD             CGS
 HV6796  HISTORY     - 1973     MARK NOT FOUND   MDDNR
 HV6796
 HV6796                          STATION DESCRIPTION
 HV6796
 HV6796'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (BHR)
 HV6796'STATION IS ON THE S SHORE OF THE PATUXENT RIVER, ABOUT 3.2 MILES
 HV6796'NW OF SOLOMONS ISLAND, ON A SANDY POINT WITH THE RUINS OF ST.
 HV6796'CUTHBERT WHARF.  IT IS ON LOW GRASSY GROUND IN THE CENTER OF THE
 HV6796'POINT AND ABOUT 100 FEET INSHORE FROM THE TIP OF THE POINT.  MARK
 HV6796'IS 2 INCHES ABOVE THE GROUND.
 HV6796'
 HV6796'STATION AND REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE AT
 HV6796'THE CENTERS OF THE TOPS OF TILES WHICH ARE SET IN BLOCKS OF CONCRETE.
 HV6796'
 HV6796'REFERENCE MARK 1 IS 62 FEET NW OF THE STATION.  MARK IS 4 INCHES
 HV6796'ABOVE THE GROUND.
 HV6796'
 HV6796'REFERENCE MARK 2 IS 42 FEET SW OF THE STATION.  MARK IS 4 INCHES
 HV6796'ABOVE THE GROUND.
 HV6796
 HV6796                          STATION RECOVERY (1960)
 HV6796
 HV6796'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6796'STATION MARK AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.  THE
 HV6796'DISTANCES TO THE REFERENCE MARKS WERE VERIFIED.  THE PUBLISHED
 HV6796'DESCRIPTION IS ADEQUATE WITH THE FOLLOWING ADDITIONS--
 HV6796'
 HV6796'STATION IS NOW ON THE MHWL PROJECTING 10 INCHES AND STAMPED CUT
 HV6796'1943.  R.M. NO. 1 IS ON THE MHWL PROJECTING 3 INCHES AND STAMPED
 HV6796'NO. 1 1943.  R.M. NO. 2 PROJECTS 2 INCHES AND IS STAMPED NO. 2 1943.
 HV6796
 HV6796                          STATION RECOVERY (1973)
 HV6796
 HV6796'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV6796'CUT 43 NOT RECOVERED
 HV6796'
 HV6796'RM 2 NOT RECOVERED
 HV6796'
 HV6796'RM 1 NOT RECOVERED
 HV6796'
 HV6796'STA. AND RMS SEARCHED FOR BUT NOT RECOVERED.  AREA APPEARS TO HAVE
 HV6796'BEEN GRADED FOR USE AS SWIM BEACH AND TREES PLANTED.  POSSIBLE
 HV6796'UNDERGROUND MARK STILL EXISTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5070 ***********************************************************************
 JV5070  DESIGNATION -  CUT
 JV5070  PID         -  JV5070
 JV5070  STATE/COUNTY-  MD/KENT
 JV5070  COUNTRY     -  US
 JV5070  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5070
 JV5070                         *CURRENT SURVEY CONTROL
 JV5070  ______________________________________________________________________
 JV5070* NAD 83(1991) POSITION- 39 06 07.09429(N) 076 12 48.28134(W)   ADJUSTED
 JV5070* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5070  ______________________________________________________________________
 JV5070  GEOID HEIGHT    -        -33.452 (meters)                     GEOID18
 JV5070  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 JV5070  HORZ ORDER      -  THIRD
 JV5070
 JV5070.The horizontal coordinates were established by classical geodetic methods
 JV5070.and adjusted by the National Geodetic Survey in January 1992.
 JV5070
 JV5070.The orthometric height was scaled from a topographic map.
 JV5070
 JV5070.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5070.GEOID18 height accuracy estimate available here.
 JV5070
 JV5070.Click photographs - Photos may exist for this station.
 JV5070
 JV5070.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5070
 JV5070. The following values were computed from the NAD 83(1991) position.
 JV5070
 JV5070;                    North         East     Units Scale Factor Converg.
 JV5070;SPC MD       -   159,619.239   468,037.697   MT  0.99995762   +0 29 37.3
 JV5070;SPC MD       -   523,684.12  1,535,553.68   sFT  0.99995762   +0 29 37.3
 JV5070;UTM  18      - 4,328,793.255   395,077.931   MT  0.99973555   -0 45 55.3
 JV5070
 JV5070!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5070!SPC MD       -   1.00000513  x   0.99995762  =   0.99996275
 JV5070!UTM  18      -   1.00000513  x   0.99973555  =   0.99974068
 JV5070
 JV5070_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9507728793(NAD 83)
 JV5070
 JV5070|---------------------------------------------------------------------|
 JV5070| PID    Reference Object                     Distance      Geod. Az  |
 JV5070|                                                           dddmmss.s |
 JV5070| JV5087 GOOSE                               397.660 METERS 24320     |
 JV5070| JV5069 NO ROAD                             383.141 METERS 34756     |
 JV5070|---------------------------------------------------------------------|
 JV5070
 JV5070                          SUPERSEDED SURVEY CONTROL
 JV5070
 JV5070  NAD 83(1986)-  39 06 07.08898(N)    076 12 48.29295(W) AD(       ) 3
 JV5070  NAD 27      -  39 06 06.68600(N)    076 12 49.44900(W) AD(       ) 3
 JV5070  USSD        -  39 06 07.08000(N)    076 12 49.29600(W) AD(       ) 3
 JV5070
 JV5070.Superseded values are not recommended for survey control.
 JV5070
 JV5070.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5070.See file dsdata.pdf to determine how the superseded data were derived.
 JV5070
 JV5070_MARKER: H = DRILL HOLE
 JV5070_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5070_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5070+STABILITY: SURFACE MOTION
 JV5070
 JV5070  HISTORY     - Date     Condition        Report By
 JV5070  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5070  HISTORY     - 1941     GOOD             CGS
 JV5070  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5070
 JV5070                          STATION DESCRIPTION
 JV5070
 JV5070'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5070'STATION IS ON THE EASTERN SHORE OF UPPER GRAYS INN CREEK, ON POINT
 JV5070'ABOUT 1-3/8 MILES NW OF CHESTER RIVER AND 1/2 MILE S OF HERRINGTOWN
 JV5070'CREEK, ON MARSHLAND, BELOW HIGH-WATER LEVEL, ABOUT 13 YARDS N OF
 JV5070'SHORE, 60 YARDS NW OF THREE LARGE CEDAR TREES, 35 YARDS SW OF WIRE
 JV5070'FENCE AT EDGE OF WOODS, AND IN CENTER OF TRIANGLE FORMED BY THREE
 JV5070'PINE STUBS DRIVEN FLUSH WITH MARSH TO SUPPORT THEODOLITE.
 JV5070'
 JV5070'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5070'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5070'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5070'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5070'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV5070'INCHES BELOW THE BASE OF THE MONUMENT.
 JV5070'
 JV5070'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5070'FOLLOWS--E GABLE OF BARN, 1/2 MILE, N 72 DEG 30 MIN W. N CHIMNEY OF
 JV5070'HOUSE, 1/2 MILE, N 67 DEG 23 MIN W. S GABLE OF HOUSE, 1-1/2 MILES,
 JV5070'N 30 DEG 23 MIN W. LEFT TANGENT OF PILES OF STRONG (OLD) WHARF, 1/4
 JV5070'MILE, N 23 DEG 39 MIN W. NAIL IN BLAZE OF 6-INCH PINE TREE, 22.31
 JV5070'METERS (73.2 FEET), N 55 DEG 28 MIN E. NAIL IN BLAZE IN 12-INCH
 JV5070'CEDAR TREE, 28.19 METERS (92.5 FEET), N 85 DEG 02 MIN E. LEFT
 JV5070'TANGENT OF PILES OF HARRIS (OLD) WHARF, 5/8 MILE, S 27 DEG 55
 JV5070'MIN E.  E CHIMNEY OF HARRIS HOUSE, 3/4 MILE, S 20 DEG 42 MIN E.
 JV5070
 JV5070                          STATION RECOVERY (1941)
 JV5070
 JV5070'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5070'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.  IT IS NOW LOCATED
 JV5070'7 METERS NE OF SHORE, 25 METERS W OF EDGE OF WOODS.
 JV5070
 JV5070                          STATION RECOVERY (1961)
 JV5070
 JV5070'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5070'STATION NOT RECOVERED AFTER A CAREFUL SEARCH.  THE PUBLISHED
 JV5070'DESCRIPTION IS NOW INADEQUATE FOR RECOVERY OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6040 ***********************************************************************
 DN6040  DESIGNATION -  CUT
 DN6040  PID         -  DN6040
 DN6040  STATE/COUNTY-  MD/CARROLL
 DN6040  COUNTRY     -  US
 DN6040  USGS QUAD   -  NEW WINDSOR (2016)
 DN6040
 DN6040                         *CURRENT SURVEY CONTROL
 DN6040  ______________________________________________________________________
 DN6040* NAD 83(1986) POSITION- 39 33 40.4    (N) 077 07 18.7    (W)   HD_HELD2
 DN6040* NAVD 88 ORTHO HEIGHT -   133.702 (meters)      438.65  (feet) ADJUSTED
 DN6040  ______________________________________________________________________
 DN6040  GEOID HEIGHT    -        -32.472 (meters)                     GEOID18
 DN6040  DYNAMIC HEIGHT  -        133.632 (meters)      438.42  (feet) COMP
 DN6040  MODELED GRAVITY -    980,100.9   (mgal)                       NAVD 88
 DN6040
 DN6040  VERT ORDER      -  SECOND    CLASS II
 DN6040
 DN6040.The horizontal coordinates were established by autonomous hand held GPS
 DN6040.observations and have an estimated accuracy of +/- 10 meters.
 DN6040
 DN6040.The orthometric height was determined by differential leveling and
 DN6040.adjusted by the NATIONAL GEODETIC SURVEY
 DN6040.in June 2012.
 DN6040
 DN6040.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6040.GEOID18 height accuracy estimate available here.
 DN6040
 DN6040.Click photographs - Photos may exist for this station.
 DN6040
 DN6040.The dynamic height is computed by dividing the NAVD 88
 DN6040.geopotential number by the normal gravity value computed on the
 DN6040.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6040.degrees latitude (g = 980.6199 gals.).
 DN6040
 DN6040.The modeled gravity was interpolated from observed gravity values.
 DN6040
 DN6040;                    North         East    Units  Estimated Accuracy
 DN6040;SPC MD       -   210,319.      389,527.      MT  (+/- 10 meters HH2 GPS)
 DN6040
 DN6040_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1771681209(NAD 83)
 DN6040
 DN6040                          SUPERSEDED SURVEY CONTROL
 DN6040
 DN6040.No superseded survey control is available for this station.
 DN6040
 DN6040_MARKER: Q = CHISELED SQUARE
 DN6040_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DN6040_SP_SET: BOX CULVERT HEADWALL
 DN6040_MAGNETIC: N = NO MAGNETIC MATERIAL
 DN6040_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6040+STABILITY: SURFACE MOTION
 DN6040_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DN6040+SATELLITE: SATELLITE OBSERVATIONS - January 23, 2008
 DN6040
 DN6040  HISTORY     - Date     Condition        Report By
 DN6040  HISTORY     - 1996     MONUMENTED       MDSHA
 DN6040  HISTORY     - 20080123 GOOD             MDSHA
 DN6040
 DN6040                          STATION DESCRIPTION
 DN6040
 DN6040'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6040'THE MARK IS LOCATED ABOUT 3.0 MI (4.8 KM) EAST OF UNION BRIDGE, 2.2 MI
 DN6040'(3.5 KM) SOUTH OF UNIONTOWN AND 1.5 MI (2.4 KM) NORTH-NORTHWEST OF NEW
 DN6040'WINDSOR.
 DN6040'
 DN6040'TO REACH THE MARK FROM THE INTERSECTION OF MARYLAND ROUTE 75 AND
 DN6040'MARYLAND ROUTE 31 IN NEW WINDSOR, GO NORTHWEST ON MARYLAND ROUTE 75
 DN6040'FOR 0.75 MI (1.2 KM) TO A MACADAM ROAD ON THE RIGHT.  TURN RIGHT AND
 DN6040'GO NORTHWEST ON MACADAM ROAD FOR 0.4 MI (0.6 KM) TO MARYLAND ROUTE 84
 DN6040'ON THE RIGHT.  TURN RIGHT AND GO NORTH ON MARYLAND ROUTE 84 FOR 0.3 MI
 DN6040'(0.5 KM) TO CONCRETE BOX CULVERT NUMBER 6017 OVER ROOP BRANCH AND THE
 DN6040'MARK ON THE LEFT.
 DN6040'
 DN6040'THE MARK IS A SQUARE CUT ON THE SOUTH CORNER OF THE HEADWALL FOR THE
 DN6040'BOX CULVERT OVER ROOP BRANCH.  IT IS 18.1 FT (5.5 M) SOUTHWEST OF THE
 DN6040'CENTERLINE OF MARYLAND ROUTE 84 AND 57.0 FT (17.4 M) SOUTHEAST OF PE
 DN6040'SYSTEM POLE NUMBER U 2015.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5295 ***********************************************************************
 JV5295  DESIGNATION -  CUTOFF
 JV5295  PID         -  JV5295
 JV5295  STATE/COUNTY-  MD/BALTIMORE
 JV5295  COUNTRY     -  US
 JV5295  USGS QUAD   -  SPARROWS POINT (2016)
 JV5295
 JV5295                         *CURRENT SURVEY CONTROL
 JV5295  ______________________________________________________________________
 JV5295* NAD 83(1991) POSITION- 39 11 49.28684(N) 076 26 53.88573(W)   ADJUSTED
 JV5295* NAVD 88 ORTHO HEIGHT -     4.3   (meters)       14.    (feet) VERTCON3
 JV5295  ______________________________________________________________________
 JV5295  GEOID HEIGHT    -        -33.057 (meters)                     GEOID18
 JV5295  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 JV5295  HORZ ORDER      -  SECOND
 JV5295
 JV5295.The horizontal coordinates were established by classical geodetic methods
 JV5295.and adjusted by the National Geodetic Survey in January 1992.
 JV5295
 JV5295.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5295.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5295
 JV5295.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5295.GEOID18 height accuracy estimate available here.
 JV5295
 JV5295.Click photographs - Photos may exist for this station.
 JV5295
 JV5295.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5295
 JV5295. The following values were computed from the NAD 83(1991) position.
 JV5295
 JV5295;                    North         East     Units Scale Factor Converg.
 JV5295;SPC MD       -   170,022.392   447,656.890   MT  0.99996552   +0 20 46.6
 JV5295;SPC MD       -   557,815.13  1,468,687.65   sFT  0.99996552   +0 20 46.6
 JV5295;UTM  18      - 4,339,640.020   374,934.865   MT  0.99979259   -0 54 55.5
 JV5295
 JV5295!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5295!SPC MD       -   1.00000451  x   0.99996552  =   0.99997003
 JV5295!UTM  18      -   1.00000451  x   0.99979259  =   0.99979710
 JV5295
 JV5295:                Primary Azimuth Mark                     Grid Az
 JV5295:SPC MD       -  RAYDIST FT HOWARD OFFSET                 352 31 14.1
 JV5295:UTM  18      -  RAYDIST FT HOWARD OFFSET                 353 46 56.2
 JV5295
 JV5295_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7493439640(NAD 83)
 JV5295
 JV5295|---------------------------------------------------------------------|
 JV5295| PID    Reference Object                     Distance      Geod. Az  |
 JV5295|                                                           dddmmss.s |
 JV5295| CB1132 CUTOFF RM 1                           7.060 METERS 08531     |
 JV5295| JV5272 HOWARD 2                            322.473 METERS 10419     |
 JV5295| CB1133 CUTOFF RM 2                           6.790 METERS 33412     |
 JV5295| JV5294 RAYDIST FT HOWARD OFFSET            APPROX. 0.6 KM 3525200.7 |
 JV5295|---------------------------------------------------------------------|
 JV5295
 JV5295                          SUPERSEDED SURVEY CONTROL
 JV5295
 JV5295  NAD 83(1986)-  39 11 49.28237(N)    076 26 53.89515(W) AD(       ) 2
 JV5295  NAD 27      -  39 11 48.89609(N)    076 26 55.04628(W) AD(       ) 2
 JV5295  NGVD 29 (07/19/86)    4.6    (m)           15.     (f) VERT ANG       
 JV5295
 JV5295.Superseded values are not recommended for survey control.
 JV5295
 JV5295.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5295.See file dsdata.pdf to determine how the superseded data were derived.
 JV5295
 JV5295_MARKER: DH = HORIZONTAL CONTROL DISK
 JV5295_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV5295_SP_SET: LIGHTHOUSE PLATFORM
 JV5295_STAMPING: CUTOFF 1973
 JV5295_MARK LOGO: NGS
 JV5295_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5295+STABILITY: SURFACE MOTION
 JV5295
 JV5295  HISTORY     - Date     Condition        Report By
 JV5295  HISTORY     - 1973     MONUMENTED       NGS
 JV5295  HISTORY     - 1975     GOOD             NGS
 JV5295
 JV5295                          STATION DESCRIPTION
 JV5295
 JV5295'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV5295'THE STATION IS LOCATED ON THE SOUTH SIDE OF THE CONCRETE PLATFORM
 JV5295'AROUND THE CUTOFF CHANNEL FRONT RANGE LIGHT.  IT IS ABOUT 10 MILES
 JV5295'SOUTHEAST OF BALTIMORE AND JUST OFFSHORE FROM FORT HOWARD.  THE
 JV5295'PROPERTY IS STATE OWNED.
 JV5295'
 JV5295'TO REACH FROM THE ENTRANCE TO FORT HOWARD, GO SOUTHWEST ON A PAVED
 JV5295'ROAD FOR 0.25 MILE TO AN OFFSET CROSSROADS AND THE PERSONNEL
 JV5295'OFFICE ON THE RIGHT.  THE STATION IS LOCATED ABOUT 0.15 MILE
 JV5295'SOUTHWEST OF THIS POINT.  A BOAT IS REQUIRED FROM THE SHORE LINE.
 JV5295'
 JV5295'THE STATION MARK IS A STANDARD DISK STAMPED CUTOFF 1973, CEMENTED
 JV5295'IN A DRILL HOLE IN THE SOUTH PART OF THE LIGHTHOUSE PLATFORM.  IT
 JV5295'IS 27.8 FEET SOUTHWEST OF A STEEL LADDER ON THE NORTHEAST PART OF
 JV5295'THE PLATFORM, 10.4 FEET NORTH OF THE SOUTHEAST EDGE OF THE
 JV5295'PLATFORM AND 7.2 FEET SOUTHEAST OF THE SOUTHEAST EDGE OF THE
 JV5295'LIGHTHOUSE.
 JV5295'
 JV5295'REFERENCE MARK ONE IS A STANDARD DISK STAMPED CUTOFF NO 1 1973,
 JV5295'CEMENTED IN A DRILL HOLE IN THE NORTHEAST PART OF THE PLATFORM.
 JV5295'IT IS 15.9 FEET NORTHEAST OF THE LIGHTHOUSE ENTRANCE, 6.4 FEET
 JV5295'SOUTHWEST OF THE NORTHEAST OF THE NORTHEAST EDGE OF PLATFORM AND
 JV5295'5.8 FEET SOUTH OF THE STEEL LADDER.
 JV5295'
 JV5295'REFERENCE MARK TWO IS A STANDARD DISK STAMPED CUTOFF NO 2 1973,
 JV5295'CEMENTED IN A DRILL HOLE IN THE SOUTHWEST EDGE OF THE PLATFORM.
 JV5295'IT IS 12.9 FEET WEST OF THE WEST EDGE OF THE LIGHTHOUSE AND 4.7
 JV5295'FEET EAST OF THE SOUTHWEST EDGE OF THE PLATFORM.
 JV5295'
 JV5295'TRIANGULATION STATION HOWARD 2, 1933 MAY BE USED AS AN AZIMUTH
 JV5295'MARK FOR THIS STATION, SEE DESCRIPTION THEREOF.
 JV5295
 JV5295                          STATION RECOVERY (1975)
 JV5295
 JV5295'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5295'STATION WAS RECOVERED AS DESCRIBED BY C.L. NOVAK IN 1973.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8026 ***********************************************************************
 AJ8026  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8026  DESIGNATION -  CUTOFF
 AJ8026  PID         -  AJ8026
 AJ8026  STATE/COUNTY-  MD/CAROLINE
 AJ8026  COUNTRY     -  US
 AJ8026  USGS QUAD   -  GOLDSBORO (2017)
 AJ8026
 AJ8026                         *CURRENT SURVEY CONTROL
 AJ8026  ______________________________________________________________________
 AJ8026* NAD 83(2011) POSITION- 39 01 47.77534(N) 075 52 30.92234(W)   ADJUSTED
 AJ8026* NAD 83(2011) ELLIP HT-   -19.006 (meters)        (06/27/12)   ADJUSTED
 AJ8026* NAD 83(2011) EPOCH   -  2010.00
 AJ8026* NAVD 88 ORTHO HEIGHT -    15.256 (meters)       50.05  (feet) ADJUSTED
 AJ8026  ______________________________________________________________________
 AJ8026  GEOID HEIGHT    -        -34.280 (meters)                     GEOID18
 AJ8026  NAD 83(2011) X  -  1,210,705.640 (meters)                     COMP
 AJ8026  NAD 83(2011) Y  - -4,811,226.347 (meters)                     COMP
 AJ8026  NAD 83(2011) Z  -  3,994,887.387 (meters)                     COMP
 AJ8026  LAPLACE CORR    -         -3.49  (seconds)                    DEFLEC18
 AJ8026  DYNAMIC HEIGHT  -         15.247 (meters)       50.02  (feet) COMP
 AJ8026  MODELED GRAVITY -    980,069.2   (mgal)                       NAVD 88
 AJ8026
 AJ8026  VERT ORDER      -  SECOND    CLASS I
 AJ8026
 AJ8026  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8026  Standards:
 AJ8026         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8026            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8026  -------------------------------------------------------------------
 AJ8026  NETWORK    0.42   0.88           0.19   0.15   0.45     -0.04396500
 AJ8026  -------------------------------------------------------------------
 AJ8026  Click here for local accuracies and other accuracy information.
 AJ8026
 AJ8026.The horizontal coordinates were established by GPS observations
 AJ8026.and adjusted by the National Geodetic Survey in June 2012.
 AJ8026
 AJ8026.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8026.been affixed to the stable North American tectonic plate. See 
 AJ8026.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8026
 AJ8026.The horizontal coordinates are valid at the epoch date displayed above
 AJ8026.which is a decimal equivalence of Year/Month/Day.
 AJ8026
 AJ8026.The orthometric height was determined by differential leveling and
 AJ8026.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8026.in December 2004.
 AJ8026
 AJ8026.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8026.GEOID18 height accuracy estimate available here.
 AJ8026
 AJ8026.Click photographs - Photos may exist for this station.
 AJ8026
 AJ8026.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8026
 AJ8026.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8026
 AJ8026.The ellipsoidal height was determined by GPS observations
 AJ8026.and is referenced to NAD 83.
 AJ8026
 AJ8026.The dynamic height is computed by dividing the NAVD 88
 AJ8026.geopotential number by the normal gravity value computed on the
 AJ8026.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8026.degrees latitude (g = 980.6199 gals.).
 AJ8026
 AJ8026.The modeled gravity was interpolated from observed gravity values.
 AJ8026
 AJ8026. The following values were computed from the NAD 83(2011) position.
 AJ8026
 AJ8026;                    North         East     Units Scale Factor Converg.
 AJ8026;SPC MD       -   151,929.529   497,384.441   MT  0.99995345   +0 42 21.3
 AJ8026;SPC MD       -   498,455.46  1,631,835.45   sFT  0.99995345   +0 42 21.3
 AJ8026;UTM  18      - 4,320,463.205   424,241.362   MT  0.99967067   -0 33 04.3
 AJ8026
 AJ8026!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8026!SPC MD       -   1.00000298  x   0.99995345  =   0.99995643
 AJ8026!UTM  18      -   1.00000298  x   0.99967067  =   0.99967365
 AJ8026
 AJ8026_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2424120463(NAD 83)
 AJ8026
 AJ8026                          SUPERSEDED SURVEY CONTROL
 AJ8026
 AJ8026  NAD 83(2007)-  39 01 47.77555(N)    075 52 30.92308(W) AD(2002.00) 0
 AJ8026  ELLIP H (02/10/07)  -18.978  (m)                       GP(2002.00)    
 AJ8026  NAD 83(1991)-  39 01 47.77555(N)    075 52 30.92318(W) AD(       ) A
 AJ8026  ELLIP H (02/12/02)  -18.974  (m)                       GP(       ) 4 1
 AJ8026  NAVD 88 (02/12/02)   15.3    (m)  GEOID99  model used  GPS OBS        
 AJ8026
 AJ8026.Superseded values are not recommended for survey control.
 AJ8026
 AJ8026.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8026.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8026
 AJ8026_MARKER: DD = SURVEY DISK
 AJ8026_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8026_STAMPING: CUTOFF 1992
 AJ8026_MARK LOGO: MDSHA
 AJ8026_PROJECTION: FLUSH
 AJ8026_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8026_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8026+STABILITY: SURFACE MOTION
 AJ8026_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8026+SATELLITE: SATELLITE OBSERVATIONS - August 10, 2023
 AJ8026
 AJ8026  HISTORY     - Date     Condition        Report By
 AJ8026  HISTORY     - 1992     MONUMENTED       MDSHA
 AJ8026  HISTORY     - 20000517 GOOD             MDSHA
 AJ8026  HISTORY     - 20021016 GOOD             MDSHA
 AJ8026  HISTORY     - 20070131 GOOD             INDIV
 AJ8026  HISTORY     - 20160820 GOOD             USPSQD
 AJ8026  HISTORY     - 20230810 GOOD             MDSHA
 AJ8026
 AJ8026                          STATION DESCRIPTION
 AJ8026
 AJ8026'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8026'THE STATION IS LOCATED ABOUT 9.3 MILES (15.0 KM) SOUTHEAST OF CHURCH
 AJ8026'HILL, 10.4 MILES (16.7 KM) EAST OF CENTREVILLE, IN THE TOWN OF
 AJ8026'BRIDGETOWN.  TO REACH THE STATION FROM THE INTERSECTION OF STATE
 AJ8026'HIGHWAY 312 (OAKLAND ROAD) AND STATE HIGHWAY 304 IN BRIDGETOWN, GO
 AJ8026'SOUTH ON STATE HIGHWAY 312 FOR 0.3 MILES (0.5 KM) TO CUTOFF ROAD AND
 AJ8026'THE STATION ON THE RIGHT.  THE STATION IS A SURVEY DISK SET IN THE TOP
 AJ8026'OF AN 8 INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.
 AJ8026'IT IS 27.5 FEET (8.4 M) WEST OF THE CENTER LINE OF THE HIGHWAY, 69.0
 AJ8026'FEET (21.0 M) SOUTHWEST OF THE CENTER OF THE ROAD, 95.7 FEET (29.2 M)
 AJ8026'NORTHEAST OF POWER POLE NUMBER 39172-17391, 34.7 FEET (10.6 M)
 AJ8026'SOUTHWEST OF A WOODEN STOP SIGN POST.
 AJ8026
 AJ8026                          STATION RECOVERY (2002)
 AJ8026
 AJ8026'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 AJ8026'RECOVERED AS DESCRIBED.
 AJ8026
 AJ8026                          STATION RECOVERY (2007)
 AJ8026
 AJ8026'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007
 AJ8026'RECOVERED AS DESCRIBED
 AJ8026
 AJ8026                          STATION RECOVERY (2016)
 AJ8026
 AJ8026'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 AJ8026'RECOVERED IN GOOD CONDITION.
 AJ8026
 AJ8026                          STATION RECOVERY (2023)
 AJ8026
 AJ8026'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 AJ8026'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5262 ***********************************************************************
 JV5262  DESIGNATION -  CUTOFF CHANNEL FRONT RNG LT
 JV5262  PID         -  JV5262
 JV5262  STATE/COUNTY-  MD/BALTIMORE
 JV5262  COUNTRY     -  US
 JV5262  USGS QUAD   -  SPARROWS POINT (2016)
 JV5262
 JV5262                         *CURRENT SURVEY CONTROL
 JV5262  ______________________________________________________________________
 JV5262* NAD 83(1991) POSITION- 39 11 49.40814(N) 076 26 53.77600(W)   ADJUSTED
 JV5262  ______________________________________________________________________
 JV5262  GEOID HEIGHT    -        -33.057 (meters)                     GEOID18
 JV5262  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 JV5262  HORZ ORDER      -  THIRD
 JV5262
 JV5262.The horizontal coordinates were established by classical geodetic methods
 JV5262.and adjusted by the National Geodetic Survey in January 1992.
 JV5262
 JV5262.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5262.GEOID18 height accuracy estimate available here.
 JV5262
 JV5262.Click photographs - Photos may exist for this station.
 JV5262
 JV5262.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5262
 JV5262. The following values were computed from the NAD 83(1991) position.
 JV5262
 JV5262;                    North         East     Units Scale Factor Converg.
 JV5262;SPC MD       -   170,026.148   447,659.501   MT  0.99996553   +0 20 46.6
 JV5262;SPC MD       -   557,827.45  1,468,696.21   sFT  0.99996553   +0 20 46.6
 JV5262;UTM  18      - 4,339,643.717   374,937.557   MT  0.99979258   -0 54 55.5
 JV5262
 JV5262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7493739643(NAD 83)
 JV5262
 JV5262                          SUPERSEDED SURVEY CONTROL
 JV5262
 JV5262  NAD 83(1986)-  39 11 49.40369(N)    076 26 53.78542(W) AD(       ) 3
 JV5262  NAD 27      -  39 11 49.00989(N)    076 26 54.93431(W) AD(       ) 3
 JV5262  USSD        -  39 11 49.37000(N)    076 26 54.76000(W) AD(       ) 3
 JV5262
 JV5262.Superseded values are not recommended for survey control.
 JV5262
 JV5262.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5262.See file dsdata.pdf to determine how the superseded data were derived.
 JV5262
 JV5262_MARKER: 14 = NAVIGATION LIGHT
 JV5262
 JV5262  HISTORY     - Date     Condition        Report By
 JV5262  HISTORY     - 1896     FIRST OBSERVED   CGS
 JV5262  HISTORY     - 1934     GOOD             CGS
 JV5262  HISTORY     - 1975     GOOD             NGS
 JV5262  HISTORY     - 1984     GOOD             USPSQD
 JV5262  HISTORY     - 19940406 GOOD             USPSQD
 JV5262  HISTORY     - 20051220 GOOD             GEOCAC
 JV5262
 JV5262                          STATION DESCRIPTION
 JV5262
 JV5262'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5262'STATION IS ON W EDGE OF NORTH POINT, ABOUT 150 METERS N OF NORTH
 JV5262'POINT AT N ENTRANCE OF PATAPSCO RIVER FROM CHESAPEAKE BAY.  IN
 JV5262'WATER ABOUT 25 METERS OFFSHORE FROM U.S. GOVERNMENT RESERVATION,
 JV5262'FORT HOWARD, AND ABOUT 25 METERS N OF PIER.
 JV5262'
 JV5262'RANGE IS RED BRICK LIGHTHOUSE STRUCTURE 25 FEET HIGH.  CENTER OF
 JV5262'TOP OF STRUCTURE MARKS POINT.
 JV5262
 JV5262                          STATION RECOVERY (1975)
 JV5262
 JV5262'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5262'STATION RECOVERED AS DESCRIBED BY JCP IN 1934.  THE RANGE IS NOW
 JV5262'NAMED CRAIGHILL CHANNEL UPPER RANGE.
 JV5262
 JV5262                          STATION RECOVERY (1984)
 JV5262
 JV5262'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5262'STATION OBSERVED AS REPORTED BY JCP 1934 RANGE LIGHT IS RED, NAME HAS
 JV5262'BEEN CHANGED TO CRAIGHILL CHANNEL UPPER RANGE.
 JV5262
 JV5262                          STATION RECOVERY (1994)
 JV5262
 JV5262'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5262'RECOVERED IN GOOD CONDITION.
 JV5262
 JV5262                          STATION RECOVERY (2005)
 JV5262
 JV5262'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 JV5262'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5270 ***********************************************************************
 JV5270  DESIGNATION -  CUTOFF CHANNEL REAR RNG LT
 JV5270  PID         -  JV5270
 JV5270  STATE/COUNTY-  MD/BALTIMORE
 JV5270  COUNTRY     -  US
 JV5270  USGS QUAD   -  SPARROWS POINT (2016)
 JV5270
 JV5270                         *CURRENT SURVEY CONTROL
 JV5270  ______________________________________________________________________
 JV5270* NAD 83(1991) POSITION- 39 12 58.20881(N) 076 27 45.87232(W)   ADJUSTED
 JV5270  ______________________________________________________________________
 JV5270  GEOID HEIGHT    -        -33.031 (meters)                     GEOID18
 JV5270  LAPLACE CORR    -         -0.66  (seconds)                    DEFLEC18
 JV5270  HORZ ORDER      -  THIRD
 JV5270
 JV5270.The horizontal coordinates were established by classical geodetic methods
 JV5270.and adjusted by the National Geodetic Survey in January 1992.
 JV5270
 JV5270.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5270.GEOID18 height accuracy estimate available here.
 JV5270
 JV5270.Click photographs - Photos may exist for this station.
 JV5270
 JV5270.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5270
 JV5270. The following values were computed from the NAD 83(1991) position.
 JV5270
 JV5270;                    North         East     Units Scale Factor Converg.
 JV5270;SPC MD       -   172,140.309   446,396.976   MT  0.99996745   +0 20 13.9
 JV5270;SPC MD       -   564,763.66  1,464,554.08   sFT  0.99996745   +0 20 13.9
 JV5270;UTM  18      - 4,341,784.802   373,722.108   MT  0.99979634   -0 55 29.8
 JV5270
 JV5270_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7372241784(NAD 83)
 JV5270
 JV5270                          SUPERSEDED SURVEY CONTROL
 JV5270
 JV5270  NAD 83(1986)-  39 12 58.20452(N)    076 27 45.88154(W) AD(       ) 3
 JV5270  NAD 27      -  39 12 57.81406(N)    076 27 47.01854(W) AD(       ) 3
 JV5270  USSD        -  39 12 58.18000(N)    076 27 46.87000(W) AD(       ) 3
 JV5270
 JV5270.Superseded values are not recommended for survey control.
 JV5270
 JV5270.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5270.See file dsdata.pdf to determine how the superseded data were derived.
 JV5270
 JV5270_MARKER: 14 = NAVIGATION LIGHT
 JV5270
 JV5270  HISTORY     - Date     Condition        Report By
 JV5270  HISTORY     - 1896     FIRST OBSERVED   CGS
 JV5270  HISTORY     - 1934     GOOD             CGS
 JV5270  HISTORY     - 1975     GOOD             NGS
 JV5270  HISTORY     - 1984     GOOD             USPSQD
 JV5270  HISTORY     - 19950730 GOOD             USPSQD
 JV5270
 JV5270                          STATION DESCRIPTION
 JV5270
 JV5270'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5270'STATION IS AT PENWOOD PARK AT E EDGE OF SPARROWS POINT AND W
 JV5270'ENTRANCE TO JONES CREEK ON N SHORE OF PATAPSCO RIVER.
 JV5270'
 JV5270'RANGE IS LARGE SQUARE WHITE WOODEN CLOSED STRUCTURE 64 FEET HIGH
 JV5270'WITH LIGHT ON TOP OF POINTED ROOF.  LIGHT ON TOP OF ROOF MARKS POINT.
 JV5270
 JV5270                          STATION RECOVERY (1975)
 JV5270
 JV5270'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5270'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5270
 JV5270                          STATION RECOVERY (1984)
 JV5270
 JV5270'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5270'STATION OBSERVED FROM JONES CREEK, STATION APPEARS IN GOOD CONDITION
 JV5270'RED COLOR RANGE LIGHT.
 JV5270
 JV5270                          STATION RECOVERY (1995)
 JV5270
 JV5270'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5270'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6302 ***********************************************************************
 HV6302  DESIGNATION -  CUTTS 2
 HV6302  PID         -  HV6302
 HV6302  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6302  COUNTRY     -  US
 HV6302  USGS QUAD   -  DEALE OE E (2016)
 HV6302
 HV6302                         *CURRENT SURVEY CONTROL
 HV6302  ______________________________________________________________________
 HV6302* NAD 83(1991) POSITION- 38 51 13.85712(N) 076 29 49.80563(W)   ADJUSTED
 HV6302* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6302  ______________________________________________________________________
 HV6302  GEOID HEIGHT    -        -33.520 (meters)                     GEOID18
 HV6302  LAPLACE CORR    -         -3.41  (seconds)                    DEFLEC18
 HV6302  HORZ ORDER      -  THIRD
 HV6302
 HV6302.The horizontal coordinates were established by classical geodetic methods
 HV6302.and adjusted by the National Geodetic Survey in January 1992.
 HV6302
 HV6302.The orthometric height was scaled from a topographic map.
 HV6302
 HV6302.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6302.GEOID18 height accuracy estimate available here.
 HV6302
 HV6302.Click photographs - Photos may exist for this station.
 HV6302
 HV6302.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6302
 HV6302. The following values were computed from the NAD 83(1991) position.
 HV6302
 HV6302;                    North         East     Units Scale Factor Converg.
 HV6302;SPC MD       -   131,902.417   443,645.569   MT  0.99994992   +0 18 56.1
 HV6302;SPC MD       -   432,749.85  1,455,527.17   sFT  0.99994992   +0 18 56.1
 HV6302;UTM  18      - 4,301,623.208   370,088.114   MT  0.99980782   -0 56 21.7
 HV6302
 HV6302!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6302!SPC MD       -   1.00000530  x   0.99994992  =   0.99995522
 HV6302!UTM  18      -   1.00000530  x   0.99980782  =   0.99981312
 HV6302
 HV6302:                Primary Azimuth Mark                     Grid Az
 HV6302:SPC MD       -  DUTCHMAN 2                               327 55 07.0
 HV6302:UTM  18      -  DUTCHMAN 2                               329 10 24.8
 HV6302
 HV6302_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7008801623(NAD 83)
 HV6302
 HV6302|---------------------------------------------------------------------|
 HV6302| PID    Reference Object                     Distance      Geod. Az  |
 HV6302|                                                           dddmmss.s |
 HV6302| CX2105 BLAZED PINE 8 DIAM                    2.286 METERS 19010     |
 HV6302| HV7217 DUTCHMAN 2                          APPROX. 2.1 KM 3281403.1 |
 HV6302|---------------------------------------------------------------------|
 HV6302
 HV6302                          SUPERSEDED SURVEY CONTROL
 HV6302
 HV6302  NAD 83(1986)-  38 51 13.85394(N)    076 29 49.81783(W) AD(       ) 3
 HV6302  NAD 27      -  38 51 13.44900(N)    076 29 50.97100(W) AD(       ) 3
 HV6302  USSD        -  38 51 13.81600(N)    076 29 50.78900(W) AD(       ) 3
 HV6302
 HV6302.Superseded values are not recommended for survey control.
 HV6302
 HV6302.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6302.See file dsdata.pdf to determine how the superseded data were derived.
 HV6302
 HV6302
 HV6302  HISTORY     - Date     Condition        Report By
 HV6302  HISTORY     - 1898     MONUMENTED       CGS
 HV6302  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6302
 HV6302                          STATION DESCRIPTION
 HV6302
 HV6302'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6302'THE STATION COULD NOT BE FOUND.  THERE IS NO PREVIOUS DESCRIPTION
 HV6302'AVAILABLE FOR THIS STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5786 ***********************************************************************
 JV5786  DESIGNATION -  CYP
 JV5786  PID         -  JV5786
 JV5786  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5786  COUNTRY     -  US
 JV5786  USGS QUAD   -  ROUND BAY (2016)
 JV5786
 JV5786                         *CURRENT SURVEY CONTROL
 JV5786  ______________________________________________________________________
 JV5786* NAD 83(1991) POSITION- 39 04 27.53734(N) 076 31 20.23817(W)   ADJUSTED
 JV5786* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5786  ______________________________________________________________________
 JV5786  GEOID HEIGHT    -        -33.144 (meters)                     GEOID18
 JV5786  LAPLACE CORR    -         -3.95  (seconds)                    DEFLEC18
 JV5786  HORZ ORDER      -  SECOND
 JV5786
 JV5786.The horizontal coordinates were established by classical geodetic methods
 JV5786.and adjusted by the National Geodetic Survey in January 1992.
 JV5786
 JV5786.The orthometric height was scaled from a topographic map.
 JV5786
 JV5786.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5786.GEOID18 height accuracy estimate available here.
 JV5786
 JV5786.Click photographs - Photos may exist for this station.
 JV5786
 JV5786.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5786
 JV5786. The following values were computed from the NAD 83(1991) position.
 JV5786
 JV5786;                    North         East     Units Scale Factor Converg.
 JV5786;SPC MD       -   156,364.257   441,337.101   MT  0.99995583   +0 17 59.4
 JV5786;SPC MD       -   513,005.07  1,447,953.47   sFT  0.99995583   +0 17 59.4
 JV5786;UTM  18      - 4,326,126.354   368,317.165   MT  0.99981352   -0 57 34.8
 JV5786
 JV5786!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5786!SPC MD       -   1.00000430  x   0.99995583  =   0.99996013
 JV5786!UTM  18      -   1.00000430  x   0.99981352  =   0.99981782
 JV5786
 JV5786:                Primary Azimuth Mark                     Grid Az
 JV5786:SPC MD       -  LINSTID 2                                062 17 22.1
 JV5786:UTM  18      -  LINSTID 2                                063 32 56.3
 JV5786
 JV5786_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6831726126(NAD 83)
 JV5786
 JV5786|---------------------------------------------------------------------|
 JV5786| PID    Reference Object                     Distance      Geod. Az  |
 JV5786|                                                           dddmmss.s |
 JV5786| CB1134 CYP RM                               12.560 METERS 01259     |
 JV5786| JV5245 LINSTID 2                           APPROX. 3.6 KM 0623521.5 |
 JV5786|---------------------------------------------------------------------|
 JV5786
 JV5786                          SUPERSEDED SURVEY CONTROL
 JV5786
 JV5786  NAD 83(1986)-  39 04 27.53351(N)    076 31 20.24849(W) AD(       ) 2
 JV5786  NAD 27      -  39 04 27.13600(N)    076 31 21.38700(W) AD(       ) 2
 JV5786
 JV5786.Superseded values are not recommended for survey control.
 JV5786
 JV5786.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5786.See file dsdata.pdf to determine how the superseded data were derived.
 JV5786
 JV5786_MARKER: DS = TRIANGULATION STATION DISK
 JV5786_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5786
 JV5786  HISTORY     - Date     Condition        Report By
 JV5786  HISTORY     - 1933     MONUMENTED       CGS
 JV5786  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5786
 JV5786                          STATION DESCRIPTION
 JV5786
 JV5786'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5786'STATION IS ON THE S SHORE OF THE MAGOTHY RIVER AT THE NW SIDE
 JV5786'OF THE MOUTH OF CYPRESS CREEK, ON A LOW SANDY SPIT, 35 FEET WIDE AT
 JV5786'THE STATION, 2 FEET ABOVE AND 112 FEET BACK OF HIGH-WATER MARK
 JV5786'ON POINT OF SPIT, AND 29 FEET TO HIGH-WATER MARK IN RANGE WITH
 JV5786'SOUTH FERRY POINT.
 JV5786'
 JV5786'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5786'CONCRETE.
 JV5786'
 JV5786'STATION AND REFERENCE MARKS ARE SET FLUSH WITH THE SURFACE OF
 JV5786'THE GROUND.
 JV5786'
 JV5786'REFERENCE MARK IS N OF STATION, AND ABOUT IN THE CENTER OF
 JV5786'THE SPIT.
 JV5786
 JV5786                          STATION RECOVERY (1961)
 JV5786
 JV5786'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5786'STATION AND RM WERE NOT FOUND.  THE AREA IN THE VICINITY OF THE
 JV5786'STATION IS USED AS A BEACH FOR SWIMMING AND BOATING.  A RESIDENT
 JV5786'NEXT TO THE BEACH STATED THAT HE HAS NOT SEEN OR HEARD OF THE
 JV5786'STATION MARKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1644 ***********************************************************************
 HU1644  DESIGNATION -  CYPRESS
 HU1644  PID         -  HU1644
 HU1644  STATE/COUNTY-  MD/WORCESTER
 HU1644  COUNTRY     -  US
 HU1644  USGS QUAD   -  WHALEYVILLE (2016)
 HU1644
 HU1644                         *CURRENT SURVEY CONTROL
 HU1644  ______________________________________________________________________
 HU1644* NAD 83(1991) POSITION- 38 26 43.88735(N) 075 18 47.05193(W)   ADJUSTED
 HU1644* NAVD 88 ORTHO HEIGHT -    11.0   (meters)       36.    (feet) VERTCON3
 HU1644  ______________________________________________________________________
 HU1644  GEOID HEIGHT    -        -35.856 (meters)                     GEOID18
 HU1644  LAPLACE CORR    -         -0.36  (seconds)                    DEFLEC18
 HU1644  HORZ ORDER      -  SECOND
 HU1644
 HU1644.The horizontal coordinates were established by classical geodetic methods
 HU1644.and adjusted by the National Geodetic Survey in January 1992.
 HU1644
 HU1644.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1644.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1644
 HU1644.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1644.GEOID18 height accuracy estimate available here.
 HU1644
 HU1644.Click photographs - Photos may exist for this station.
 HU1644
 HU1644.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1644
 HU1644. The following values were computed from the NAD 83(1991) position.
 HU1644
 HU1644;                    North         East     Units Scale Factor Converg.
 HU1644;SPC MD       -    87,816.983   547,254.699   MT  0.99997787   +1 03 31.6
 HU1644;SPC MD       -   288,112.89  1,795,451.46   sFT  0.99997787   +1 03 31.6
 HU1644;UTM  18      - 4,255,295.151   472,680.384   MT  0.99960919   -0 11 40.8
 HU1644
 HU1644!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1644!SPC MD       -   1.00000391  x   0.99997787  =   0.99998178
 HU1644!UTM  18      -   1.00000391  x   0.99960919  =   0.99961310
 HU1644
 HU1644:                Primary Azimuth Mark                     Grid Az
 HU1644:SPC MD       -  CYPRESS RM 3 AZIMUTH                     087 42 35.6
 HU1644:UTM  18      -  CYPRESS RM 3 AZIMUTH                     088 57 48.0
 HU1644
 HU1644_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7268055295(NAD 83)
 HU1644
 HU1644|---------------------------------------------------------------------|
 HU1644| PID    Reference Object                     Distance      Geod. Az  |
 HU1644|                                                           dddmmss.s |
 HU1644| DC7195 CYPRESS RM 3 AZIMUTH                               0884607.2 |
 HU1644| DC7193 CYPRESS RM 1                         10.339 METERS 14106     |
 HU1644| HU1645 CYPRESS A 1974                      170.352 METERS 23733     |
 HU1644| DC7194 CYPRESS RM 2                         12.639 METERS 23756     |
 HU1644|---------------------------------------------------------------------|
 HU1644
 HU1644                          SUPERSEDED SURVEY CONTROL
 HU1644
 HU1644  NAD 83(1986)-  38 26 43.87384(N)    075 18 47.07568(W) AD(       ) 2
 HU1644  NAD 27      -  38 26 43.46008(N)    075 18 48.38594(W) AD(       ) 2
 HU1644  NGVD 29 (07/19/86)   11.2    (m)           37.     (f) VERT ANG       
 HU1644
 HU1644.Superseded values are not recommended for survey control.
 HU1644
 HU1644.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1644.See file dsdata.pdf to determine how the superseded data were derived.
 HU1644
 HU1644_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1644_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1644_STAMPING: CYPRESS 1974
 HU1644_MARK LOGO: NGS
 HU1644_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1644+STABILITY: SURFACE MOTION
 HU1644
 HU1644  HISTORY     - Date     Condition        Report By
 HU1644  HISTORY     - 1974     MONUMENTED       NGS
 HU1644  HISTORY     - 1976     GOOD             NGS
 HU1644  HISTORY     - 1977     GOOD             NGS
 HU1644
 HU1644                          STATION DESCRIPTION
 HU1644
 HU1644'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1644'THE STATION IS LOCATED ABOUT 4.7 MILES WEST OF SELBYVILLE,
 HU1644'DELAWARE AND 3.5 MILES NORTH OF WHALEYSVILLE, MARYLAND AND ON
 HU1644'PROPERTY OWNED BY DELAWARE WILDLANDS INC., MR. EDMOND HARVEY,
 HU1644'PRESIDENT.  1011 WASHINGTON STREET, WILMINGTON, DELAWARE
 HU1644'19801.  PHONE 658-0204.
 HU1644'
 HU1644'TO REACH THE STATION FROM THE POST OFFICE IN SELBYVILLE, DELAWARE,
 HU1644'GO SOUTHWEST ON CHURCH STREET FOR 0.6 MILE TO THE JUNCTION WITH
 HU1644'U.S. HIGHWAY 113.  TURN LEFT AND GO SOUTH ON U.S. HIGHWAY 113
 HU1644'FOR 0.3 MILE TO A PAVED CROSSROAD, JUST AFTER CROSSING THE
 HU1644'STATE LINE.  TURN RIGHT AND GO WESTERLY ON THE PAVED ROAD FOR
 HU1644'1.05 MILE TO A CROSSROAD.  CONTINUE WESTERLY ON THE PAVED ROAD
 HU1644'FOR 0.6 MILE TO A T-ROAD.  TURN RIGHT AND GO NORTHWEST ON A
 HU1644'PAVED ROAD FOR 1.25 MILES TO WHERE THE ROAD MAKES A SHARP CURVE
 HU1644'TO THE LEFT.  HERE BEAR LEFT AND GO SOUTH FOLLOWING THE
 HU1644'PAVED ROAD FOR 0.5 MILE TO A SIDE ROAD ON THE RIGHT, TURN
 HU1644'RIGHT AND GO WEST ON A SAND ROAD FOR 0.75 MILE TO SAND SIDE
 HU1644'ROAD ON THE LEFT, CONTINUE WESTERLY ON THE SAND ROAD FOR
 HU1644'0.15 MILE TO REFERENCE MARK 3 ON THE RIGHT, CONTINUE
 HU1644'WESTERLY ON THE SAND ROAD FOR 0.25 MILE TO A WOODEN BRIDGE,
 HU1644'CROSS BRIDGE CONTINUE WESTERLY ON THE SAND ROAD FOR 0.05 MILE
 HU1644'TO THE STATION ON THE RIGHT.
 HU1644'
 HU1644'STATION MARKS ARE STANDARD DISKS STAMPED CYPRESS 1974.  THE
 HU1644'SURFACE DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE
 HU1644'MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 35 FEET
 HU1644'NORTH OF A SIGN READING CYPRESS SWAMP 1200 ACRES CONSERVATION AREA
 HU1644'DELAWARE WILDLANDS INC.  NON PROFIT.  21 FEET NORTHWEST OF THE
 HU1644'SAND ROAD AND 4.5 FEET SOUTH-SOUTHEAST OF A METAL WITNESS POST.
 HU1644'
 HU1644'REFERENCE MARK 1, A STANDARD DISK STAMPED CYPRESS NO 1 1974,
 HU1644'IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1644'IS FLUSH WITH THE GROUND SURFACE.  IT IS 12 FEET SOUTHEAST OF
 HU1644'THE SAND ROAD, 7 FEET NORTHWEST OF A CANAL DITCH.
 HU1644'
 HU1644'REFERENCE MARK 2, A STANDARD DISK STAMPED CYPRESS NO 2 1974, IS
 HU1644'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1644'IS FLUSH WITH THE GROUND SURFACE.  IT IS 20 FEET NORTH-NORTHWEST
 HU1644'OF THE SAND ROAD, 14 FEET SOUTHWEST OF THE SIGN AND 2.7 FEET
 HU1644'SOUTHEAST OF A 4-INCH PINE TREE.
 HU1644'
 HU1644'REFERENCE MARK 3, A STANDARD DISK STAMPED CYPRESS NO 3 1974,
 HU1644'IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1644'IS FLUSH WITH THE GROUND SURFACE.  IT IS 29 FEET NORTH-NORTHWEST
 HU1644'OF THE SAND ROAD AND 8 FEET NORTH-NORTHWEST OF A METAL WITNESS
 HU1644'POST.
 HU1644
 HU1644                          STATION RECOVERY (1976)
 HU1644
 HU1644'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1644'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1644'CONDITION.  A DIFFERENCE OF 3 MINUTES AND 21 SECONDS IN DIRECTION
 HU1644'WAS NOTED TO REFERENCE MARK 2.  A SHORTER DISTANCE OF 0.02 FOOT
 HU1644'OR 0.007 METERS WAS NOTED TO REFERENCE MARK 2.  ALL OTHER
 HU1644'DISTANCES AND DIRECTIONS WERE WITHIN CLOSE AGREEMENT WITH THE
 HU1644'1974 OBSERVATIONS.
 HU1644'
 HU1644'THE 1974 DESCRIPTION IS ADEQUATE.
 HU1644'
 HU1644'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1644'3 MILES SOUTHEAST OF GUMBORO.
 HU1644
 HU1644                          STATION RECOVERY (1977)
 HU1644
 HU1644'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HU1644'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1644'CONDITION AS PREVIOUSLY DESCRIBED.
 HU1644'
 HU1644'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 14 WAS
 HU1644'ESTABLISHED 700.85 METERS NORTH OF THIS STATION AT THIS
 HU1644'DATE.  SEE DESCRIPTION THEREOF.
 HU1644'
 HU1644'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1644'3 MILES SOUTHEAST OF GUMBORO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0829 ***********************************************************************
 HV0829  DESIGNATION -  D 1
 HV0829  PID         -  HV0829
 HV0829  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0829  COUNTRY     -  US
 HV0829  USGS QUAD   -  BRANDYWINE (2016)
 HV0829
 HV0829                         *CURRENT SURVEY CONTROL
 HV0829  ______________________________________________________________________
 HV0829* NAD 83(1986) POSITION- 38 41 47.     (N) 076 50 53.     (W)   SCALED
 HV0829* NAVD 88 ORTHO HEIGHT -    70.880 (meters)      232.55  (feet) ADJUSTED
 HV0829  ______________________________________________________________________
 HV0829  GEOID HEIGHT    -        -32.901 (meters)                     GEOID18
 HV0829  DYNAMIC HEIGHT  -         70.839 (meters)      232.41  (feet) COMP
 HV0829  MODELED GRAVITY -    980,047.6   (mgal)                       NAVD 88
 HV0829
 HV0829  VERT ORDER      -  FIRST     CLASS II
 HV0829
 HV0829.The horizontal coordinates were scaled from a map and have
 HV0829.an estimated accuracy of +/- 6 seconds.
 HV0829
 HV0829.The orthometric height was determined by differential leveling and
 HV0829.adjusted by the NATIONAL GEODETIC SURVEY
 HV0829.in June 1991.
 HV0829
 HV0829.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0829.GEOID18 height accuracy estimate available here.
 HV0829
 HV0829.Click photographs - Photos may exist for this station.
 HV0829
 HV0829.The dynamic height is computed by dividing the NAVD 88
 HV0829.geopotential number by the normal gravity value computed on the
 HV0829.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0829.degrees latitude (g = 980.6199 gals.).
 HV0829
 HV0829.The modeled gravity was interpolated from observed gravity values.
 HV0829
 HV0829;                    North         East    Units  Estimated Accuracy
 HV0829;SPC MD       -   114,310.      413,220.      MT  (+/- 180 meters Scaled)
 HV0829
 HV0829_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH392847(NAD 83)
 HV0829
 HV0829                          SUPERSEDED SURVEY CONTROL
 HV0829
 HV0829  NGVD 29 (05/01/89)   71.106  (m)          233.29   (f) ADJUSTED    1 2
 HV0829  NGVD 29 (??/??/87)   71.138  (m)          233.39   (f) SUPERSEDED  1 2
 HV0829
 HV0829.Superseded values are not recommended for survey control.
 HV0829
 HV0829.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0829.See file dsdata.pdf to determine how the superseded data were derived.
 HV0829
 HV0829_MARKER: DB = BENCH MARK DISK
 HV0829_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0829_STAMPING: D 1 1917
 HV0829_MARK LOGO: CGS
 HV0829_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0829+STABILITY: SURFACE MOTION
 HV0829
 HV0829  HISTORY     - Date     Condition        Report By
 HV0829  HISTORY     - 1917     MONUMENTED       CGS
 HV0829  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0829
 HV0829                          STATION DESCRIPTION
 HV0829
 HV0829'DESCRIBED BY COAST AND GEODETIC SURVEY 1917
 HV0829'AT BRANDYWINE.
 HV0829'AT BRANDYWINE, PRINCE GEORGES COUNTY, ON THE PENNSYLVANIA
 HV0829'RAILROAD, 100 FEET NORTH OF THE STATION, AT THE SOUTH END OF THE
 HV0829'TRIANGLE FORMED BY THE CROSSING OF THE CEDAR POINT (U.S. NAVY)
 HV0829'RAILROAD, NEAR THE CROSSING OF STATE HIGHWAY 381, 50 FEET WEST OF THE
 HV0829'THE TRACK, AND SOUTH OF THE HIGHWAY.  A STANDARD DISK, STAMPED
 HV0829'D 1 1917 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 8 INCHES
 HV0829'ABOVE GROUND.
 HV0829
 HV0829                          STATION RECOVERY (1971)
 HV0829
 HV0829'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0829'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0974 ***********************************************************************
 HV0974  DESIGNATION -  D 100
 HV0974  PID         -  HV0974
 HV0974  STATE/COUNTY-  MD/CHARLES
 HV0974  COUNTRY     -  US
 HV0974  USGS QUAD   -  BENEDICT (2016)
 HV0974
 HV0974                         *CURRENT SURVEY CONTROL
 HV0974  ______________________________________________________________________
 HV0974* NAD 83(1986) POSITION- 38 32 24.     (N) 076 44 52.     (W)   SCALED
 HV0974* NAVD 88 ORTHO HEIGHT -    49.595 (meters)      162.71  (feet) ADJUSTED
 HV0974  ______________________________________________________________________
 HV0974  GEOID HEIGHT    -        -33.510 (meters)                     GEOID18
 HV0974  DYNAMIC HEIGHT  -         49.565 (meters)      162.61  (feet) COMP
 HV0974  MODELED GRAVITY -    980,025.4   (mgal)                       NAVD 88
 HV0974
 HV0974  VERT ORDER      -  FIRST     CLASS I
 HV0974
 HV0974.The horizontal coordinates were scaled from a map and have
 HV0974.an estimated accuracy of +/- 6 seconds.
 HV0974
 HV0974.The orthometric height was determined by differential leveling and
 HV0974.adjusted by the NATIONAL GEODETIC SURVEY
 HV0974.in June 1991.
 HV0974
 HV0974.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0974.GEOID18 height accuracy estimate available here.
 HV0974
 HV0974.Click photographs - Photos may exist for this station.
 HV0974
 HV0974.The dynamic height is computed by dividing the NAVD 88
 HV0974.geopotential number by the normal gravity value computed on the
 HV0974.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0974.degrees latitude (g = 980.6199 gals.).
 HV0974
 HV0974.The modeled gravity was interpolated from observed gravity values.
 HV0974
 HV0974;                    North         East    Units  Estimated Accuracy
 HV0974;SPC MD       -    96,970.      421,990.      MT  (+/- 180 meters Scaled)
 HV0974
 HV0974_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH476671(NAD 83)
 HV0974
 HV0974                          SUPERSEDED SURVEY CONTROL
 HV0974
 HV0974  NGVD 29 (11/26/84)   49.859  (m)          163.58   (f) ADJUSTED    1 1
 HV0974
 HV0974.Superseded values are not recommended for survey control.
 HV0974
 HV0974.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0974.See file dsdata.pdf to determine how the superseded data were derived.
 HV0974
 HV0974_MARKER: DB = BENCH MARK DISK
 HV0974_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0974_STAMPING: D 100 1961
 HV0974_MARK LOGO: CGS
 HV0974_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0974+STABILITY: SURFACE MOTION
 HV0974
 HV0974  HISTORY     - Date     Condition        Report By
 HV0974  HISTORY     - 1961     MONUMENTED       CGS
 HV0974  HISTORY     - 1971     GOOD             NGS
 HV0974  HISTORY     - 20020607 MARK NOT FOUND   MDSHA
 HV0974
 HV0974                          STATION DESCRIPTION
 HV0974
 HV0974'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0974'2.2 MI E FROM HUGHESVILLE.
 HV0974'ABOUT 2.15 MILES SOUTHEAST ALONG STATE HIGHWAYS 231 AND 381 FROM
 HV0974'THE INTERSECTION OF STATE HIGHWAY 5 AT HUGHESVILLE, 262 FEET
 HV0974'NORTHEAST OF THE CENTER OF THE JUNCTION OF STATE HIGHWAYS 231 AND
 HV0974'381, 131.0 FEET NORTH-NORTHWEST AND ACROSS STATE HIGHWAY 381 FROM
 HV0974'THE NORTH CORNER OF THE CORNER TAVERN, PATUXENT CITY, 36 FEET
 HV0974'NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 153 FEET SOUTHWEST
 HV0974'OF POWER POLE NUMBER 3 WHICH IS BRACED BY 2 GUY WIRES, 1.4 FEET
 HV0974'NORTHEAST OF A METAL WITNESS POST, ABOUT 1 FOOT BELOW THE LEVEL
 HV0974'OF THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 HV0974'6 INCHES.
 HV0974
 HV0974                          STATION RECOVERY (2002)
 HV0974
 HV0974'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0974'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1603 ***********************************************************************
 JU1603  DESIGNATION -  D 103
 JU1603  PID         -  JU1603
 JU1603  STATE/COUNTY-  MD/CECIL
 JU1603  COUNTRY     -  US
 JU1603  USGS QUAD   -  ELKTON (2016)
 JU1603
 JU1603                         *CURRENT SURVEY CONTROL
 JU1603  ______________________________________________________________________
 JU1603* NAD 83(1986) POSITION- 39 35 40.     (N) 075 49 34.     (W)   SCALED
 JU1603* NAVD 88 ORTHO HEIGHT -    13.008 (meters)       42.68  (feet) ADJUSTED
 JU1603  ______________________________________________________________________
 JU1603  GEOID HEIGHT    -        -33.166 (meters)                     GEOID18
 JU1603  DYNAMIC HEIGHT  -         13.002 (meters)       42.66  (feet) COMP
 JU1603  MODELED GRAVITY -    980,141.2   (mgal)                       NAVD 88
 JU1603
 JU1603  VERT ORDER      -  FIRST     CLASS II
 JU1603
 JU1603.The horizontal coordinates were scaled from a map and have
 JU1603.an estimated accuracy of +/- 6 seconds.
 JU1603
 JU1603.The orthometric height was determined by differential leveling and
 JU1603.adjusted by the NATIONAL GEODETIC SURVEY
 JU1603.in June 1991.
 JU1603
 JU1603.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1603.GEOID18 height accuracy estimate available here.
 JU1603
 JU1603.Click photographs - Photos may exist for this station.
 JU1603
 JU1603.The dynamic height is computed by dividing the NAVD 88
 JU1603.geopotential number by the normal gravity value computed on the
 JU1603.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1603.degrees latitude (g = 980.6199 gals.).
 JU1603
 JU1603.The modeled gravity was interpolated from observed gravity values.
 JU1603
 JU1603;                    North         East    Units  Estimated Accuracy
 JU1603;SPC MD       -   214,650.      500,830.      MT  (+/- 180 meters Scaled)
 JU1603
 JU1603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ290830(NAD 83)
 JU1603
 JU1603                          SUPERSEDED SURVEY CONTROL
 JU1603
 JU1603  NGVD 29 (11/26/84)   13.245  (m)           43.45   (f) ADJUSTED    1 2
 JU1603
 JU1603.Superseded values are not recommended for survey control.
 JU1603
 JU1603.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1603.See file dsdata.pdf to determine how the superseded data were derived.
 JU1603
 JU1603_MARKER: DB = BENCH MARK DISK
 JU1603_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JU1603_SP_SET: CULVERT
 JU1603_STAMPING: D 103 1961
 JU1603_MARK LOGO: CGS
 JU1603_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU1603
 JU1603  HISTORY     - Date     Condition        Report By
 JU1603  HISTORY     - 1961     MONUMENTED       CGS
 JU1603  HISTORY     - 1971     GOOD             NGS
 JU1603  HISTORY     - 20040325 MARK NOT FOUND   USPSQD
 JU1603
 JU1603                          STATION DESCRIPTION
 JU1603
 JU1603'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1603'0.4 MI S FROM ELKTON.
 JU1603'ABOUT 0.4 MILE SOUTH ALONG U.S. HIGHWAY 213 FROM THE JUNCTION OF
 JU1603'U.S. HIGHWAY 40 AT ELKTON, AT THE JUNCTION OF MANOR ROAD WHICH
 JU1603'LEADS WEST, SET IN THE TOP OF THE SOUTH END OF THE WEST CONCRETE
 JU1603'HEADWALL OF A 3-FOOT METAL PIPE CULVERT UNDER THE HIGHWAY,
 JU1603'30 1/2 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 48 FEET SOUTH
 JU1603'OF THE CENTER LINE OF THE ROAD, AND ABOUT 1 FOOT BELOW THE LEVEL
 JU1603'OF THE HIGHWAY.
 JU1603
 JU1603                          STATION RECOVERY (2004)
 JU1603
 JU1603'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLG)
 JU1603'THE CONCRETE HEADWALL HAS CRUMBLED BADLY. THE MARK WAS NOT IN THE AREA
 JU1603'AND WAS NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0368 ***********************************************************************
 HU0368  TIDAL BM    -  This is a Tidal Bench Mark.
 HU0368  DESIGNATION -  D 104
 HU0368  PID         -  HU0368
 HU0368  STATE/COUNTY-  MD/WORCESTER
 HU0368  COUNTRY     -  US
 HU0368  USGS QUAD   -  OCEAN CITY (2016)
 HU0368
 HU0368                         *CURRENT SURVEY CONTROL
 HU0368  ______________________________________________________________________
 HU0368* NAD 83(1986) POSITION- 38 20 10.51   (N) 075 05 05.72   (W)   HD_HELD1
 HU0368* NAVD 88 ORTHO HEIGHT -     2.008 (meters)        6.59  (feet) ADJUSTED
 HU0368  ______________________________________________________________________
 HU0368  GEOID HEIGHT    -        -36.056 (meters)                     GEOID18
 HU0368  DYNAMIC HEIGHT  -          2.007 (meters)        6.58  (feet) COMP
 HU0368  MODELED GRAVITY -    980,008.5   (mgal)                       NAVD 88
 HU0368
 HU0368  VERT ORDER      -  SECOND    CLASS I
 HU0368
 HU0368.The horizontal coordinates were determined by differentially corrected
 HU0368.hand held GPS observations or other comparable positioning techniques
 HU0368.and have an estimated accuracy of +/- 3 meters.
 HU0368
 HU0368.The orthometric height was determined by differential leveling and
 HU0368.adjusted by the NATIONAL GEODETIC SURVEY
 HU0368.in August 2010.
 HU0368
 HU0368.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0368.GEOID18 height accuracy estimate available here.
 HU0368
 HU0368.This Tidal Bench Mark is designated as VM 24476
 HU0368.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HU0368
 HU0368.Click photographs - Photos may exist for this station.
 HU0368
 HU0368.The dynamic height is computed by dividing the NAVD 88
 HU0368.geopotential number by the normal gravity value computed on the
 HU0368.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0368.degrees latitude (g = 980.6199 gals.).
 HU0368
 HU0368.The modeled gravity was interpolated from observed gravity values.
 HU0368
 HU0368;                    North         East    Units  Estimated Accuracy
 HU0368;SPC MD       -    76,083.2     567,421.8     MT  (+/- 3 meters HH1 GPS) 
 HU0368
 HU0368_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9257843127(NAD 83)
 HU0368
 HU0368                          SUPERSEDED SURVEY CONTROL
 HU0368
 HU0368  NAVD 88 (06/15/91)    2.018  (m)            6.62   (f) SUPERSEDED  2 0
 HU0368  NGVD 29 (11/26/84)    2.264  (m)            7.43   (f) ADJUSTED    2 0
 HU0368
 HU0368.Superseded values are not recommended for survey control.
 HU0368
 HU0368.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0368.See file dsdata.pdf to determine how the superseded data were derived.
 HU0368
 HU0368_MARKER: DB = BENCH MARK DISK
 HU0368_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0368_SP_SET: BUILDING
 HU0368_STAMPING: D 104 1962
 HU0368_MARK LOGO: CGS
 HU0368_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU0368_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0368_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0368+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2014
 HU0368
 HU0368  HISTORY     - Date     Condition        Report By
 HU0368  HISTORY     - 1962     MONUMENTED       CGS
 HU0368  HISTORY     - 1972     GOOD             NGS
 HU0368  HISTORY     - 1975     GOOD             NGS
 HU0368  HISTORY     - 1988     GOOD             USPSQD
 HU0368  HISTORY     - 20020330 GOOD             USPSQD
 HU0368  HISTORY     - 20031228 GOOD             USPSQD
 HU0368  HISTORY     - 20040409 GOOD             MDSHA
 HU0368  HISTORY     - 20051203 GOOD             USPSQD
 HU0368  HISTORY     - 20080519 GOOD             USACE
 HU0368  HISTORY     - 20090721 GOOD             CO-OPS
 HU0368  HISTORY     - 20110111 GOOD             INDIV
 HU0368  HISTORY     - 20140923 GOOD             CGS
 HU0368
 HU0368                          STATION DESCRIPTION
 HU0368
 HU0368'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0368'AT OCEAN CITY.
 HU0368'SET IN A VERTICAL DRILL HOLE IN THE NORTHWEST BRICK WALL AT THE
 HU0368'WEST CORNER OF THE OCEAN CITY POST OFFICE.  168 FEET NORTHEAST
 HU0368'OF THE NORTHEAST CURB OF NORTH 4TH STREET, 12 FEET SOUTHEAST OF
 HU0368'THE SOUTHEAST CURB OF PHILADELPHIA AVENUE, 1.1 FEET NORTHEAST OF
 HU0368'THE WEST CORNER OF THE BUILDING AND 1.9 FEET ABOVE THE LEVEL OF
 HU0368'THE SIDEWALK.
 HU0368
 HU0368                          STATION RECOVERY (1972)
 HU0368
 HU0368'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0368'RECOVERED IN GOOD CONDITION.
 HU0368
 HU0368                          STATION RECOVERY (1975)
 HU0368
 HU0368'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HU0368'RECOVERED IN GOOD CONDITION.
 HU0368
 HU0368                          STATION RECOVERY (1988)
 HU0368
 HU0368'RECOVERY NOTE BY US POWER SQUADRON 1988 (CAC)
 HU0368'RECOVERED IN GOOD CONDITION.
 HU0368
 HU0368                          STATION RECOVERY (2002)
 HU0368
 HU0368'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 HU0368'RECOVERED IN GOOD CONDITION.
 HU0368
 HU0368                          STATION RECOVERY (2003)
 HU0368
 HU0368'RECOVERY NOTE BY US POWER SQUADRON 2003 (PFM)
 HU0368'RECOVERED IN GOOD CONDITION.
 HU0368
 HU0368                          STATION RECOVERY (2004)
 HU0368
 HU0368'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (MRA)
 HU0368'RECOVERED IN GOOD CONDITION.
 HU0368
 HU0368                          STATION RECOVERY (2005)
 HU0368
 HU0368'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU0368'RECOVERED IN GOOD CONDITION.
 HU0368
 HU0368                          STATION RECOVERY (2008)
 HU0368
 HU0368'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2008 (JBC)
 HU0368'RECOVERED IN GOOD CONDITION.
 HU0368
 HU0368                          STATION RECOVERY (2009)
 HU0368
 HU0368'RECOVERY NOTE BY CEN OPER OCEANOG PROD+SVCS 2009 (DH)
 HU0368'RECOVERED AS DESCRIBED.
 HU0368
 HU0368                          STATION RECOVERY (2011)
 HU0368
 HU0368'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (RNH)
 HU0368'THE MARKER IS FOUND TO BE IN GOOD CONDITION BY THE TOWN OF OCEAN CITY
 HU0368'ENGINEERING DEPARTMENT AND LOCATED AS PER DESCRIPTION.
 HU0368
 HU0368                          STATION RECOVERY (2014)
 HU0368
 HU0368'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 2014 (NTW)
 HU0368'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0456 ***********************************************************************
 HU0456  DESIGNATION -  D 105 RESET
 HU0456  PID         -  HU0456
 HU0456  STATE/COUNTY-  MD/WICOMICO
 HU0456  COUNTRY     -  US
 HU0456  USGS QUAD   -  SALISBURY (2016)
 HU0456
 HU0456                         *CURRENT SURVEY CONTROL
 HU0456  ______________________________________________________________________
 HU0456* NAD 83(1986) POSITION- 38 21 15.3    (N) 075 35 56.5    (W)   HD_HELD2
 HU0456* NAVD 88 ORTHO HEIGHT -     9.100 (meters)       29.86  (feet) ADJUSTED
 HU0456  ______________________________________________________________________
 HU0456  GEOID HEIGHT    -        -35.837 (meters)                     GEOID18
 HU0456  DYNAMIC HEIGHT  -          9.095 (meters)       29.84  (feet) COMP
 HU0456  MODELED GRAVITY -    980,004.3   (mgal)                       NAVD 88
 HU0456
 HU0456  VERT ORDER      -  FIRST     CLASS II
 HU0456
 HU0456.The horizontal coordinates were established by autonomous hand held GPS
 HU0456.observations and have an estimated accuracy of +/- 10 meters.
 HU0456
 HU0456.The orthometric height was determined by differential leveling and
 HU0456.adjusted by the NATIONAL GEODETIC SURVEY
 HU0456.in June 1991.
 HU0456
 HU0456.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0456.GEOID18 height accuracy estimate available here.
 HU0456
 HU0456.Click photographs - Photos may exist for this station.
 HU0456
 HU0456.The dynamic height is computed by dividing the NAVD 88
 HU0456.geopotential number by the normal gravity value computed on the
 HU0456.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0456.degrees latitude (g = 980.6199 gals.).
 HU0456
 HU0456.The modeled gravity was interpolated from observed gravity values.
 HU0456
 HU0456;                    North         East    Units  Estimated Accuracy
 HU0456;SPC MD       -    77,264.      522,451.      MT  (+/- 10 meters HH2 GPS)
 HU0456
 HU0456_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4766045290(NAD 83)
 HU0456
 HU0456                          SUPERSEDED SURVEY CONTROL
 HU0456
 HU0456  NGVD 29 (11/26/84)    9.355  (m)           30.69   (f) ADJUSTED    1 2
 HU0456
 HU0456.Superseded values are not recommended for survey control.
 HU0456
 HU0456.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0456.See file dsdata.pdf to determine how the superseded data were derived.
 HU0456
 HU0456_MARKER: DB = BENCH MARK DISK
 HU0456_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0456_STAMPING: D 105 1963 RESET 1972
 HU0456_MARK LOGO: CGS
 HU0456_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0456+STABILITY: SURFACE MOTION
 HU0456
 HU0456  HISTORY     - Date     Condition        Report By
 HU0456  HISTORY     - 1972     MONUMENTED       NGS
 HU0456  HISTORY     - 19971018 GOOD             USPSQD
 HU0456  HISTORY     - 20050907 GOOD             GEOCAC
 HU0456
 HU0456                          STATION DESCRIPTION
 HU0456
 HU0456'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0456'1.2 MI S FROM SALISBURY.
 HU0456'ABOUT 1.2 MILES SOUTH ALONG THE PENN CENTRAL RAILROAD FROM THE
 HU0456'STATION AT SALISBURY, 0.15 MILE SOUTH OF MILEPOST 7, ABOUT 110
 HU0456'YARDS NORTHEAST OF THE CROSSING OF SOUTH BLVD, 35.6 FEET NORTHWEST
 HU0456'OF AND ACROSS ONE SIDE TRACK FROM THE NORTHWEST RAIL OF THE MAIN
 HU0456'TRACK, 10.8 FEET SOUTHEAST OF THE SOUTHEAST CURB OF A STREET,
 HU0456'8 FEET SOUTH OF THE 4TH POWER LINE POLE NORTHEAST OF THE CROSSING
 HU0456'OF THE BLVD, 55.5 FEET WEST OF THE NORTHEAST END OF A RAILROAD
 HU0456'SWITCH STAND, ABOUT LEVEL WITH THE TRACK AND SET IN THE TOP OF A
 HU0456'CONCRETE POST PROJECTING 1 INCH ABOVE THE LEVEL OF THE GROUND.
 HU0456
 HU0456                          STATION RECOVERY (1997)
 HU0456
 HU0456'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0456'RECOVERED IN GOOD CONDITION.
 HU0456
 HU0456                          STATION RECOVERY (2005)
 HU0456
 HU0456'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0456'THE POWER LINE POLE IS NUMBERED 46854 92739.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0606 ***********************************************************************
 HU0606  DESIGNATION -  D 106
 HU0606  PID         -  HU0606
 HU0606  STATE/COUNTY-  MD/SOMERSET
 HU0606  COUNTRY     -  US
 HU0606  USGS QUAD   -  MARION (2016)
 HU0606
 HU0606                         *CURRENT SURVEY CONTROL
 HU0606  ______________________________________________________________________
 HU0606* NAD 83(2011) POSITION- 38 00 42.93927(N) 075 48 45.26577(W)   ADJUSTED
 HU0606* NAD 83(2011) ELLIP HT-   -34.197 (meters)        (02/16/16)   ADJUSTED
 HU0606* NAD 83(2011) EPOCH   -  2010.00
 HU0606* NAVD 88 ORTHO HEIGHT -     1.881 (meters)        6.17  (feet) ADJUSTED
 HU0606  ______________________________________________________________________
 HU0606  GEOID HEIGHT    -        -36.090 (meters)                     GEOID18
 HU0606  NAD 83(2011) X  -  1,233,215.002 (meters)                     COMP
 HU0606  NAD 83(2011) Y  - -4,878,119.549 (meters)                     COMP
 HU0606  NAD 83(2011) Z  -  3,906,466.087 (meters)                     COMP
 HU0606  LAPLACE CORR    -         -1.75  (seconds)                    DEFLEC18
 HU0606  DYNAMIC HEIGHT  -          1.880 (meters)        6.17  (feet) COMP
 HU0606  MODELED GRAVITY -    979,974.8   (mgal)                       NAVD 88
 HU0606
 HU0606  VERT ORDER      -  FIRST     CLASS I
 HU0606
 HU0606  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0606  Standards:
 HU0606         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0606            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0606  -------------------------------------------------------------------
 HU0606  NETWORK    0.80   2.10           0.33   0.32   1.07     -0.08292456
 HU0606  -------------------------------------------------------------------
 HU0606  Click here for local accuracies and other accuracy information.
 HU0606
 HU0606.The horizontal coordinates were established by GPS observations
 HU0606.and adjusted by the ARCHER-SHEE LAND SURVEYING in February 2016.
 HU0606
 HU0606.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0606.been affixed to the stable North American tectonic plate. See 
 HU0606.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0606
 HU0606.The horizontal coordinates are valid at the epoch date displayed above
 HU0606.which is a decimal equivalence of Year/Month/Day.
 HU0606
 HU0606.The orthometric height was determined by differential leveling and
 HU0606.adjusted by the NATIONAL GEODETIC SURVEY
 HU0606.in June 1991.
 HU0606
 HU0606.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0606.GEOID18 height accuracy estimate available here.
 HU0606
 HU0606.Click photographs - Photos may exist for this station.
 HU0606
 HU0606.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0606
 HU0606.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0606
 HU0606.The ellipsoidal height was determined by GPS observations
 HU0606.and is referenced to NAD 83.
 HU0606
 HU0606.The dynamic height is computed by dividing the NAVD 88
 HU0606.geopotential number by the normal gravity value computed on the
 HU0606.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0606.degrees latitude (g = 980.6199 gals.).
 HU0606
 HU0606.The modeled gravity was interpolated from observed gravity values.
 HU0606
 HU0606. The following values were computed from the NAD 83(2011) position.
 HU0606
 HU0606;                    North         East     Units Scale Factor Converg.
 HU0606;SPC MD       -    39,004.269   504,281.255   MT  1.00006259   +0 44 43.0
 HU0606;SPC MD       -   127,966.51  1,654,462.75   sFT  1.00006259   +0 44 43.0
 HU0606;UTM  18      - 4,207,449.913   428,669.162   MT  0.99966266   -0 30 01.5
 HU0606
 HU0606!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0606!SPC MD       -   1.00000537  x   1.00006259  =   1.00006796
 HU0606!UTM  18      -   1.00000537  x   0.99966266  =   0.99966802
 HU0606
 HU0606_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2866907449(NAD 83)
 HU0606
 HU0606                          SUPERSEDED SURVEY CONTROL
 HU0606
 HU0606  NGVD 29 (11/26/84)    2.133  (m)            7.00   (f) ADJUSTED    1 1
 HU0606
 HU0606.Superseded values are not recommended for survey control.
 HU0606
 HU0606.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0606.See file dsdata.pdf to determine how the superseded data were derived.
 HU0606
 HU0606_MARKER: DB = BENCH MARK DISK
 HU0606_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0606_STAMPING: D 106 1963
 HU0606_MARK LOGO: CGS
 HU0606_PROJECTION: PROJECTING 10 CENTIMETERS
 HU0606_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU0606_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0606+STABILITY: SURFACE MOTION
 HU0606_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0606+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2015
 HU0606
 HU0606  HISTORY     - Date     Condition        Report By
 HU0606  HISTORY     - 1963     MONUMENTED       CGS
 HU0606  HISTORY     - 19901026 GOOD             NGS
 HU0606  HISTORY     - 20021209 GOOD             NGS
 HU0606  HISTORY     - 20041024 GOOD             GEOCAC
 HU0606  HISTORY     - 20080402 GOOD             MDSHA
 HU0606  HISTORY     - 20150514 GOOD             ARCSHE
 HU0606
 HU0606                          STATION DESCRIPTION
 HU0606
 HU0606'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0606'3 MI NE FROM CRISFIELD.
 HU0606'3.05 MILES NORTHEAST ALONG STATE HIGHWAY 413 FROM THE POST OFFICE
 HU0606'AT CRISFIELD, ABOUT 2.9 MILES SOUTHWEST ALONG STATE HIGHWAY 413
 HU0606'FROM THE PENNSYLVANIA RAILROAD STATION AT MARION, ABOUT 0.15 MILE
 HU0606'NORTHEAST OF THE INTERSECTION OF STATE HIGHWAY 667, 37 FEET
 HU0606'SOUTHEAST OF CENTER LINE OF HIGHWAY, 24 FEET NORTHWEST OF
 HU0606'NORTHWEST RAIL OF THE PENNSYLVANIA RAILROAD, 41.5 FEET SOUTHWEST
 HU0606'OF SOUTHEAST END OF A 24-INCH PIPE CULVERT UNDER HIGHWAY, 32.5
 HU0606'FEET WEST OF NORTHWEST END OF A 36-INCH PIPE CULVERT UNDER
 HU0606'RAILROAD, 2 1/2 FEET NORTHWEST OF MILEPOST 13, 1.5 FEET SOUTHEAST
 HU0606'OF A STEEL WITNESS POST, 3 FEET BELOW LEVEL OF HIGHWAY, AND SET
 HU0606'IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES.
 HU0606
 HU0606                          STATION RECOVERY (1990)
 HU0606
 HU0606'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0606'4.9 KM (3.0 MI) NORTHERLY ALONG STATE HIGHWAY 413 FROM THE JUNCTION OF
 HU0606'FOURTH STREET IN CRISFIELD, 0.3 KM (0.2 MI) NORTHEAST OF THE
 HU0606'INTERSECTION OF STATE HIGHWAY 667, 30.5 M (100.1 FT) NORTHEAST OF THE
 HU0606'CENTER OF A DRIVEWAY, 12.6 M (41.3 FT) SOUTHWEST OF THE CENTER OF THE
 HU0606'SOUTHEAST END OF A 24-INCH PIPE CULVERT, 11.2 M (36.7 FT) SOUTHEAST
 HU0606'OF THE HIGHWAY CENTERLINE, 8.0 M (26.2 FT) NORTHWEST OF THE CENTER OF
 HU0606'AN ABANDONED RAILROAD BED, 0.9 M (3.0 FT) BELOW THE LEVEL OF THE
 HU0606'HIGHWAY, 0.4 M (1.3 FT) SOUTHEAST OF A WITNESS POST, 0.3 M (1.0 FT)
 HU0606'NORTHEAST OF A WITNESS POST, AND THE MONUMENT PROJECTS 0.1 M (0.3 FT)
 HU0606'ABOVE THE GROUND SURFACE.
 HU0606
 HU0606                          STATION RECOVERY (2002)
 HU0606
 HU0606'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (DBC)
 HU0606'RECOVERED IN GOOD CONDTION.  NOTE--2.1 MILES NORTH OF JUNCTION OF
 HU0606'ROUTE 413 AND STATE HIGHWAY 385 (JACKSONVILLE RD,) IN CRISFIELD. 1.0
 HU0606'FOOT (0.3 M) NORTHEAST OF A FIBERGLASS WITNESS POST.
 HU0606
 HU0606                          STATION RECOVERY (2004)
 HU0606
 HU0606'RECOVERY NOTE BY GEOCACHING 2004 (DPH)
 HU0606'RECOVERED IN GOOD CONDITION.
 HU0606
 HU0606                          STATION RECOVERY (2008)
 HU0606
 HU0606'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (MPM)
 HU0606'RECOVERED IN GOOD CONDITION.
 HU0606
 HU0606                          STATION RECOVERY (2015)
 HU0606
 HU0606'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 HU0606'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0581 ***********************************************************************
 HU0581  DESIGNATION -  D 107
 HU0581  PID         -  HU0581
 HU0581  STATE/COUNTY-  MD/SOMERSET
 HU0581  COUNTRY     -  US
 HU0581  USGS QUAD   -  DEAL ISLAND (2016)
 HU0581
 HU0581                         *CURRENT SURVEY CONTROL
 HU0581  ______________________________________________________________________
 HU0581* NAD 83(1986) POSITION- 38 10 13.     (N) 075 56 35.     (W)   SCALED
 HU0581* NAVD 88 ORTHO HEIGHT -     0.963 (meters)        3.16  (feet) ADJUSTED
 HU0581  ______________________________________________________________________
 HU0581  GEOID HEIGHT    -        -35.787 (meters)                     GEOID18
 HU0581  DYNAMIC HEIGHT  -          0.963 (meters)        3.16  (feet) COMP
 HU0581  MODELED GRAVITY -    979,985.1   (mgal)                       NAVD 88
 HU0581
 HU0581  VERT ORDER      -  FIRST     CLASS I
 HU0581
 HU0581.The horizontal coordinates were scaled from a map and have
 HU0581.an estimated accuracy of +/- 6 seconds.
 HU0581
 HU0581.The orthometric height was determined by differential leveling and
 HU0581.adjusted by the NATIONAL GEODETIC SURVEY
 HU0581.in June 1991.
 HU0581
 HU0581.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0581.GEOID18 height accuracy estimate available here.
 HU0581
 HU0581.Click photographs - Photos may exist for this station.
 HU0581
 HU0581.The dynamic height is computed by dividing the NAVD 88
 HU0581.geopotential number by the normal gravity value computed on the
 HU0581.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0581.degrees latitude (g = 980.6199 gals.).
 HU0581
 HU0581.The modeled gravity was interpolated from observed gravity values.
 HU0581
 HU0581;                    North         East    Units  Estimated Accuracy
 HU0581;SPC MD       -    56,440.      492,620.      MT  (+/- 180 meters Scaled)
 HU0581
 HU0581_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH173251(NAD 83)
 HU0581
 HU0581                          SUPERSEDED SURVEY CONTROL
 HU0581
 HU0581  NGVD 29 (11/26/84)    1.222  (m)            4.01   (f) ADJUSTED    1 1
 HU0581
 HU0581.Superseded values are not recommended for survey control.
 HU0581
 HU0581.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0581.See file dsdata.pdf to determine how the superseded data were derived.
 HU0581
 HU0581_MARKER: DB = BENCH MARK DISK
 HU0581_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0581_STAMPING: D 107 1963
 HU0581_MARK LOGO: CGS
 HU0581_PROJECTION: PROJECTING 5 CENTIMETERS
 HU0581_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0581+STABILITY: SURFACE MOTION
 HU0581
 HU0581  HISTORY     - Date     Condition        Report By
 HU0581  HISTORY     - 1963     MONUMENTED       CGS
 HU0581
 HU0581                          STATION DESCRIPTION
 HU0581
 HU0581'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0581'2.8 MI W FROM DAMES QUARTER.
 HU0581'2.85 MILES WEST ALONG STATE HIGHWAY 363 FROM THE POST OFFICE AT
 HU0581'DAMES QUARTER, ABOUT 0.45 MILES WEST OF THE POST OFFICE AT THE
 HU0581'SMALL COMMUNITY OF CHANCE, 305 FEET NORTHEAST OF NORTHEAST END OF
 HU0581'A WOODEN BRIDGE OVER LAWS COVE AND LEADING TO DEAL ISLAND, AT THE
 HU0581'JUNCTION OF A PRIVATE DRIVEWAY LEADING SOUTHEAST TO A TWO STORY
 HU0581'FRAME HOUSE, 29.5 FEET SOUTHEAST OF CENTER LINE OF HIGHWAY, 13 FEET
 HU0581'SOUTHWEST OF CENTER LINE OF DRIVEWAY, 3 FEET SOUTHEAST OF TELEPHONE
 HU0581'POLE, 1.5 FEET NORTHWEST OF A STEEL WITNESS POST, ABOUT LEVEL WITH
 HU0581'HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1321 ***********************************************************************
 JV1321  DESIGNATION -  D 109 MDSRC
 JV1321  PID         -  JV1321
 JV1321  STATE/COUNTY-  MD/HOWARD
 JV1321  COUNTRY     -  US
 JV1321  USGS QUAD   -  SAVAGE (2016)
 JV1321
 JV1321                         *CURRENT SURVEY CONTROL
 JV1321  ______________________________________________________________________
 JV1321* NAD 83(1986) POSITION- 39 10 49.     (N) 076 52 16.     (W)   SCALED
 JV1321* NAVD 88 ORTHO HEIGHT -   116.971 (meters)      383.76  (feet) ADJUSTED
 JV1321  ______________________________________________________________________
 JV1321  GEOID HEIGHT    -        -32.169 (meters)                     GEOID18
 JV1321  DYNAMIC HEIGHT  -        116.908 (meters)      383.56  (feet) COMP
 JV1321  MODELED GRAVITY -    980,089.4   (mgal)                       NAVD 88
 JV1321
 JV1321  VERT ORDER      -  SECOND    CLASS 0
 JV1321
 JV1321.The horizontal coordinates were scaled from a map and have
 JV1321.an estimated accuracy of +/- 6 seconds.
 JV1321
 JV1321.The orthometric height was determined by differential leveling and
 JV1321.adjusted by the NATIONAL GEODETIC SURVEY
 JV1321.in June 1991.
 JV1321
 JV1321.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1321.GEOID18 height accuracy estimate available here.
 JV1321
 JV1321.Click photographs - Photos may exist for this station.
 JV1321
 JV1321.The dynamic height is computed by dividing the NAVD 88
 JV1321.geopotential number by the normal gravity value computed on the
 JV1321.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1321.degrees latitude (g = 980.6199 gals.).
 JV1321
 JV1321.The modeled gravity was interpolated from observed gravity values.
 JV1321
 JV1321;                    North         East    Units  Estimated Accuracy
 JV1321;SPC MD       -   168,030.      411,140.      MT  (+/- 180 meters Scaled)
 JV1321
 JV1321_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ383384(NAD 83)
 JV1321
 JV1321                          SUPERSEDED SURVEY CONTROL
 JV1321
 JV1321  NGVD 29 (11/26/84)  117.187  (m)          384.47   (f) ADJUSTED    2 0
 JV1321
 JV1321.Superseded values are not recommended for survey control.
 JV1321
 JV1321.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1321.See file dsdata.pdf to determine how the superseded data were derived.
 JV1321
 JV1321_MARKER: DB = BENCH MARK DISK
 JV1321_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1321_STAMPING: D 109 1965 USC AND GS
 JV1321_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1321+STABILITY: SURFACE MOTION
 JV1321
 JV1321  HISTORY     - Date     Condition        Report By
 JV1321  HISTORY     - 1966     MONUMENTED       MDSRC
 JV1321
 JV1321                          STATION DESCRIPTION
 JV1321
 JV1321'DESCRIBED BY MD STATE ROADS COMM 1966
 JV1321'0.2 MI E FROM SIMPSONVILLE.
 JV1321'ABOUT 0.2 MILE EAST ALONG MARYLAND HIGHWAY 32 FROM THE
 JV1321'INTERSECTION OF U.S. HIGHWAY 29 AT SIMPSONVILLE, 33.0 FT.
 JV1321'SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 4.5 FT. NORTH OF
 JV1321'POWER POLE NUMBER 5, 2.0 FT. NORTHEAST OF A METAL WITNESS POST.
 JV1321'SET IN CONCRETE POST PROJECTING 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1115 ***********************************************************************
 JV1115  DESIGNATION -  D 110
 JV1115  PID         -  JV1115
 JV1115  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1115  COUNTRY     -  US
 JV1115  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1115
 JV1115                         *CURRENT SURVEY CONTROL
 JV1115  ______________________________________________________________________
 JV1115* NAD 83(1986) POSITION- 39 18 30.3    (N) 076 31 55.9    (W)   HD_HELD2
 JV1115* NAVD 88 ORTHO HEIGHT -     7.743 (meters)       25.40  (feet) ADJUSTED
 JV1115  ______________________________________________________________________
 JV1115  GEOID HEIGHT    -        -32.882 (meters)                     GEOID18
 JV1115  DYNAMIC HEIGHT  -          7.739 (meters)       25.39  (feet) COMP
 JV1115  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV1115
 JV1115  VERT ORDER      -  FIRST     CLASS I
 JV1115
 JV1115.The horizontal coordinates were established by autonomous hand held GPS
 JV1115.observations and have an estimated accuracy of +/- 10 meters.
 JV1115
 JV1115.The orthometric height was determined by differential leveling and
 JV1115.adjusted by the NATIONAL GEODETIC SURVEY
 JV1115.in June 1991.
 JV1115
 JV1115.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1115.GEOID18 height accuracy estimate available here.
 JV1115
 JV1115.Click photographs - Photos may exist for this station.
 JV1115
 JV1115.The dynamic height is computed by dividing the NAVD 88
 JV1115.geopotential number by the normal gravity value computed on the
 JV1115.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1115.degrees latitude (g = 980.6199 gals.).
 JV1115
 JV1115.The modeled gravity was interpolated from observed gravity values.
 JV1115
 JV1115;                    North         East    Units  Estimated Accuracy
 JV1115;SPC MD       -   182,348.      440,347.      MT  (+/- 10 meters HH2 GPS)
 JV1115
 JV1115_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6789952121(NAD 83)
 JV1115
 JV1115                          SUPERSEDED SURVEY CONTROL
 JV1115
 JV1115  NGVD 29 (11/26/84)    7.987  (m)           26.20   (f) ADJUSTED    1 1
 JV1115
 JV1115.Superseded values are not recommended for survey control.
 JV1115
 JV1115.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1115.See file dsdata.pdf to determine how the superseded data were derived.
 JV1115
 JV1115_MARKER: DB = BENCH MARK DISK
 JV1115_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1115_STAMPING: D 110 1965
 JV1115_MARK LOGO: MDBCSM
 JV1115_PROJECTION: FLUSH
 JV1115_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1115+STABILITY: SURFACE MOTION
 JV1115_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1115+SATELLITE: SATELLITE OBSERVATIONS - April 29, 2021
 JV1115
 JV1115  HISTORY     - Date     Condition        Report By
 JV1115  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1115  HISTORY     - 1971     GOOD             NGS
 JV1115  HISTORY     - 20080902 GOOD             MDSHA
 JV1115  HISTORY     - 20210429 GOOD             MDSHA
 JV1115
 JV1115                          STATION DESCRIPTION
 JV1115
 JV1115'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1115'1 MI S FROM ROSEDALE.
 JV1115'LOCATED 3.0 MILES WEST OF THE BALTIMORE BELTWAY AND THE PULASKI
 JV1115'HIGHWAY (U.S. 40) INTERCHANGE ALONG PULASKI HIGHWAY AT MORAVIA
 JV1115'ROAD.  45.9 FEET SOUTHEAST OF THE CENTERLINE OF THE NORTH BOUND
 JV1115'LANE OF PULASKI HIGHWAY, 25.0 FEET WEST OF THE PROJECTED CENTERLINE
 JV1115'OF MORAVIA ROAD, 20.9 FEET SOUTHEAST OF G AND E POLE 5116, AND
 JV1115'2.0 FEET NORTHWEST OF A CHAIN LINK FENCE SET FLUSH WITH THE GROUND.
 JV1115
 JV1115                          STATION RECOVERY (1971)
 JV1115
 JV1115'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1115'RECOVERED IN GOOD CONDITION.
 JV1115
 JV1115                          STATION RECOVERY (2008)
 JV1115
 JV1115'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV1115'THE MARK IS 20 FEET WEST OF THE PROJECTED CENTERLINE OF MORAVIA PARK
 JV1115'DRIVE(FORMERLY MORAVIA ROAD). 31.3 FEET EAST OF A TRAFFIC SIGNAL POLE.
 JV1115'29.9 FEET SOUTH OF THE SOUTH CORNER OF A DROP INLET IN N.B. US. ROUTE
 JV1115'40. 11.2 FEET SOUTH SOUTHEAST OF THE SSE EDGE OF A CONCRETE WALK. 2.0
 JV1115'FEET NORTHWEST OF A CHAINLINK FENCE. THE G AND E POLE NUMBERED 5116 IS
 JV1115'NOW GONE.
 JV1115
 JV1115                          STATION RECOVERY (2021)
 JV1115
 JV1115'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV1115'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1089 ***********************************************************************
 HV1089  DESIGNATION -  D 111
 HV1089  PID         -  HV1089
 HV1089  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1089  COUNTRY     -  US
 HV1089  USGS QUAD   -  PISCATAWAY (2016)
 HV1089
 HV1089                         *CURRENT SURVEY CONTROL
 HV1089  ______________________________________________________________________
 HV1089* NAD 83(1986) POSITION- 38 41 07.     (N) 076 59 47.     (W)   SCALED
 HV1089* NAVD 88 ORTHO HEIGHT -    20.519 (meters)       67.32  (feet) ADJUSTED
 HV1089  ______________________________________________________________________
 HV1089  GEOID HEIGHT    -        -32.543 (meters)                     GEOID18
 HV1089  DYNAMIC HEIGHT  -         20.508 (meters)       67.28  (feet) COMP
 HV1089  MODELED GRAVITY -    980,069.7   (mgal)                       NAVD 88
 HV1089
 HV1089  VERT ORDER      -  SECOND    CLASS 0
 HV1089
 HV1089.The horizontal coordinates were scaled from a map and have
 HV1089.an estimated accuracy of +/- 6 seconds.
 HV1089
 HV1089.The orthometric height was determined by differential leveling and
 HV1089.adjusted by the NATIONAL GEODETIC SURVEY
 HV1089.in June 1991.
 HV1089
 HV1089.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1089.GEOID18 height accuracy estimate available here.
 HV1089
 HV1089.Click photographs - Photos may exist for this station.
 HV1089
 HV1089.The dynamic height is computed by dividing the NAVD 88
 HV1089.geopotential number by the normal gravity value computed on the
 HV1089.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1089.degrees latitude (g = 980.6199 gals.).
 HV1089
 HV1089.The modeled gravity was interpolated from observed gravity values.
 HV1089
 HV1089;                    North         East    Units  Estimated Accuracy
 HV1089;SPC MD       -   113,070.      400,310.      MT  (+/- 180 meters Scaled)
 HV1089
 HV1089_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH263837(NAD 83)
 HV1089
 HV1089                          SUPERSEDED SURVEY CONTROL
 HV1089
 HV1089  NGVD 29 (05/01/89)   20.757  (m)           68.10   (f) ADJUSTED    2 0
 HV1089  NGVD 29 (??/??/87)   20.798  (m)           68.23   (f) SUPERSEDED  2 0
 HV1089
 HV1089.Superseded values are not recommended for survey control.
 HV1089
 HV1089.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1089.See file dsdata.pdf to determine how the superseded data were derived.
 HV1089
 HV1089_MARKER: DD = SURVEY DISK
 HV1089_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HV1089_SP_SET: FOUNDATION
 HV1089_STAMPING: D-111 1966 USCGS
 HV1089_MARK LOGO: MDSRC
 HV1089_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1089+STABILITY: SURFACE MOTION
 HV1089
 HV1089  HISTORY     - Date     Condition        Report By
 HV1089  HISTORY     - 1966     MONUMENTED       MDSRC
 HV1089  HISTORY     - 20040816 MARK NOT FOUND   GEOCAC
 HV1089
 HV1089                          STATION DESCRIPTION
 HV1089
 HV1089'DESCRIBED BY MD STATE ROADS COMM 1966
 HV1089'7 MI S FROM OXON HILL.
 HV1089'FROM OXON HILL MARYLAND, PROCEED SOUTH ALONG MARYLAND HIGHWAY
 HV1089'210 FOR 7.0 MILES TO THE INTERSECTION OF FARMINGTON ROAD.  THENCE
 HV1089'WEST ON FARMINGTON ROAD FOR 0.05 MILE.  STATION IS SET IN A
 HV1089'DRILLED HOLE OF A CONCRETE FOUNDATION OF A ELECTRIC COMPANY
 HV1089'POWER UNIT STATION, IT IS 30.5 FEET NORTHEAST OF A POWER POLE,
 HV1089'31.5 FEET NORTHWEST OF ANOTHER POWER POLE, 75.0 FEET NORTH
 HV1089'CENTERLINE OF FARMINGTON ROAD, 1.0 FEET WEST OF THE EAST END,
 HV1089'1.0 FEET NORTH OF THE SOUTH END OF THE CONCRETE FOUNDATION AND
 HV1089'160.0 FEET WEST OF THE CENTERLINE OF MARYLAND ROUTE 210.  SET
 HV1089'FLUSH IN THE CONCRETE FOUNDATION.
 HV1089
 HV1089                          STATION RECOVERY (2004)
 HV1089
 HV1089'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV1089'AN ELECTRIC COMPANY POWER UNIT STATION NO LONGER STANDS AT THIS
 HV1089'LOCATION.  THERE IS NO EVIDENCE OF THE STATION'S CONCRETE FOUNDATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1283 ***********************************************************************
 JV1283  DESIGNATION -  D 112 MDSRC
 JV1283  PID         -  JV1283
 JV1283  STATE/COUNTY-  MD/BALTIMORE
 JV1283  COUNTRY     -  US
 JV1283  USGS QUAD   -  REISTERSTOWN (2016)
 JV1283
 JV1283                         *CURRENT SURVEY CONTROL
 JV1283  ______________________________________________________________________
 JV1283* NAD 83(1986) POSITION- 39 24 20.     (N) 076 45 38.     (W)   SCALED
 JV1283* NAVD 88 ORTHO HEIGHT -   137.093 (meters)      449.78  (feet) ADJUSTED
 JV1283  ______________________________________________________________________
 JV1283  GEOID HEIGHT    -        -32.207 (meters)                     GEOID18
 JV1283  DYNAMIC HEIGHT  -        137.021 (meters)      449.54  (feet) COMP
 JV1283  MODELED GRAVITY -    980,097.8   (mgal)                       NAVD 88
 JV1283
 JV1283  VERT ORDER      -  SECOND    CLASS 0
 JV1283
 JV1283.The horizontal coordinates were scaled from a map and have
 JV1283.an estimated accuracy of +/- 6 seconds.
 JV1283
 JV1283.The orthometric height was determined by differential leveling and
 JV1283.adjusted by the NATIONAL GEODETIC SURVEY
 JV1283.in June 1991.
 JV1283
 JV1283.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1283.GEOID18 height accuracy estimate available here.
 JV1283
 JV1283.Click photographs - Photos may exist for this station.
 JV1283
 JV1283.The dynamic height is computed by dividing the NAVD 88
 JV1283.geopotential number by the normal gravity value computed on the
 JV1283.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1283.degrees latitude (g = 980.6199 gals.).
 JV1283
 JV1283.The modeled gravity was interpolated from observed gravity values.
 JV1283
 JV1283;                    North         East    Units  Estimated Accuracy
 JV1283;SPC MD       -   193,060.      420,620.      MT  (+/- 180 meters Scaled)
 JV1283
 JV1283_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ484632(NAD 83)
 JV1283
 JV1283                          SUPERSEDED SURVEY CONTROL
 JV1283
 JV1283  NGVD 29 (11/26/84)  137.305  (m)          450.47   (f) ADJUSTED    2 0
 JV1283
 JV1283.Superseded values are not recommended for survey control.
 JV1283
 JV1283.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1283.See file dsdata.pdf to determine how the superseded data were derived.
 JV1283
 JV1283_MARKER: DB = BENCH MARK DISK
 JV1283_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1283_SP_SET: BASE OF FLAG POLE
 JV1283_STAMPING: D-112 1967 USC AND GS
 JV1283_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1283
 JV1283  HISTORY     - Date     Condition        Report By
 JV1283  HISTORY     - 1967     MONUMENTED       MDSRC
 JV1283  HISTORY     - 19950713 MARK NOT FOUND   USPSQD
 JV1283  HISTORY     - 20100708 MARK NOT FOUND   JARICE
 JV1283
 JV1283                          STATION DESCRIPTION
 JV1283
 JV1283'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1283'3 MI NW FROM PIKESVILLE.
 JV1283'FROM THE BRIDGE OVER THE BALTIMORE BELTWAY PROCEED NORTHWEST ALONG
 JV1283'U.S. 140 (REISTERSTOWN ROAD) FOR 2.0 MILES.  STATION IS SET IN A
 JV1283'DRILLED HOLE IN THE CONCRETE BASE OF THE FLAG POLE IN FRONT OF
 JV1283'THE BALTIMORE COUNTY POLICE STATION (GARRISON STATION).  17.5
 JV1283'FEET WEST OF THE CENTER OF THE ENTRANCE TO THE POLICE STATION
 JV1283'AND 4.5 FEET EAST OF THE EDGE OF THE SIDEWALK.  A STANDARD DISK
 JV1283'STAMPED D-112 1967 U.S.C. AND G.S.
 JV1283
 JV1283                          STATION RECOVERY (1995)
 JV1283
 JV1283'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1283'MARK NOT FOUND.
 JV1283
 JV1283                          STATION RECOVERY (2010)
 JV1283
 JV1283'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV1283'THE POLICE STATION AND FLAGPOLE MENTIONED IN THE ORIGINAL DESCRIPTION
 JV1283'NO LONGER EXIST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6819 ***********************************************************************
 DG6819  DESIGNATION -  D 113 RESET
 DG6819  PID         -  DG6819
 DG6819  STATE/COUNTY-  MD/ALLEGANY
 DG6819  COUNTRY     -  US
 DG6819  USGS QUAD   -  EVITTS CREEK (2016)
 DG6819
 DG6819                         *CURRENT SURVEY CONTROL
 DG6819  ______________________________________________________________________
 DG6819* NAD 83(1986) POSITION- 39 42 26.6    (N) 078 42 43.0    (W)   HD_HELD2
 DG6819* NAVD 88 ORTHO HEIGHT -   235.535 (meters)      772.75  (feet) ADJUSTED
 DG6819  ______________________________________________________________________
 DG6819  GEOID HEIGHT    -        -32.738 (meters)                     GEOID18
 DG6819  DYNAMIC HEIGHT  -        235.397 (meters)      772.30  (feet) COMP
 DG6819  MODELED GRAVITY -    980,036.1   (mgal)                       NAVD 88
 DG6819
 DG6819  VERT ORDER      -  SECOND    CLASS I
 DG6819
 DG6819.The horizontal coordinates were established by autonomous hand held GPS
 DG6819.observations and have an estimated accuracy of +/- 10 meters.
 DG6819
 DG6819.The orthometric height was determined by differential leveling and
 DG6819.adjusted by the NATIONAL GEODETIC SURVEY
 DG6819.in December 2004.
 DG6819
 DG6819.No vertical observational check was made to the station.
 DG6819
 DG6819.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6819.GEOID18 height accuracy estimate available here.
 DG6819
 DG6819.Click photographs - Photos may exist for this station.
 DG6819
 DG6819.The dynamic height is computed by dividing the NAVD 88
 DG6819.geopotential number by the normal gravity value computed on the
 DG6819.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6819.degrees latitude (g = 980.6199 gals.).
 DG6819
 DG6819.The modeled gravity was interpolated from observed gravity values.
 DG6819
 DG6819;                    North         East    Units  Estimated Accuracy
 DG6819;SPC MD       -   227,918.      253,189.      MT  (+/- 10 meters HH2 GPS)
 DG6819
 DG6819_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9614897783(NAD 83)
 DG6819
 DG6819                          SUPERSEDED SURVEY CONTROL
 DG6819
 DG6819.No superseded survey control is available for this station.
 DG6819
 DG6819_MARKER: DD = SURVEY DISK
 DG6819_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6819_STAMPING: D 113 RESET 2002
 DG6819_MARK LOGO: MDSHA
 DG6819_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6819_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6819+STABILITY: SURFACE MOTION
 DG6819_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6819+SATELLITE: SATELLITE OBSERVATIONS - 2002
 DG6819
 DG6819  HISTORY     - Date     Condition        Report By
 DG6819  HISTORY     - 2002     MONUMENTED       MDSHA
 DG6819
 DG6819                          STATION DESCRIPTION
 DG6819
 DG6819'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG6819'THE STATION IS LOCATED ABOUT 4.4 MI (7.08 KM) NORTHEAST OF CUMBERLAND.
 DG6819'TO REACH THE STATION FROM U.S.HIGHWAY 40 AND FREDERICK STREET IN
 DG6819'CUMBERLAND, GO NORTHEAST ALONG FREDERICK STREET AND BEDFORD ROAD FOR
 DG6819'4.5 MI (7.24 KM) TO THE ZION MEMORIAL PARK CEMETARY AND THE STATION ON
 DG6819'THE LEFT.  THE STATION IS A MARYLAND STATE SURVEY DISK SET IN THE TOP
 DG6819'OF A 12 INCH (30 CM) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 DG6819'GROUND.  IT IS 25.5 FT (7.8 M) NORTHWEST OF THE CENTER OF BEDFORD
 DG6819'ROAD, 23.5 FT (7.2 M) NORTHEAST OF THE CENTER OF THE ENTRANCE TO THE
 DG6819'CEMETARY, 9.7 FT (3.0 M) SOUTHWEST OF POWER POLE NUMBER C-4623, 39.5
 DG6819'FT (12.0 M) SOUTHEAST OF THE SOUTHEAST CORNER OF THE PORTER HEADSTONE,
 DG6819'ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1844 ***********************************************************************
 JU1844  DESIGNATION -  D 114
 JU1844  PID         -  JU1844
 JU1844  STATE/COUNTY-  MD/CECIL
 JU1844  COUNTRY     -  US
 JU1844  USGS QUAD   -  NORTH EAST (2016)
 JU1844
 JU1844                         *CURRENT SURVEY CONTROL
 JU1844  ______________________________________________________________________
 JU1844* NAD 83(1986) POSITION- 39 30 46.     (N) 075 53 06.     (W)   SCALED
 JU1844* NAVD 88 ORTHO HEIGHT -     3.153 (meters)       10.34  (feet) ADJUSTED
 JU1844  ______________________________________________________________________
 JU1844  GEOID HEIGHT    -        -33.317 (meters)                     GEOID18
 JU1844  DYNAMIC HEIGHT  -          3.151 (meters)       10.34  (feet) COMP
 JU1844  MODELED GRAVITY -    980,123.9   (mgal)                       NAVD 88
 JU1844
 JU1844  VERT ORDER      -  FIRST     CLASS II
 JU1844
 JU1844.The horizontal coordinates were scaled from a map and have
 JU1844.an estimated accuracy of +/- 6 seconds.
 JU1844
 JU1844.The orthometric height was determined by differential leveling and
 JU1844.adjusted by the NATIONAL GEODETIC SURVEY
 JU1844.in June 1991.
 JU1844
 JU1844.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1844.GEOID18 height accuracy estimate available here.
 JU1844
 JU1844.Click photographs - Photos may exist for this station.
 JU1844
 JU1844.The dynamic height is computed by dividing the NAVD 88
 JU1844.geopotential number by the normal gravity value computed on the
 JU1844.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1844.degrees latitude (g = 980.6199 gals.).
 JU1844
 JU1844.The modeled gravity was interpolated from observed gravity values.
 JU1844
 JU1844;                    North         East    Units  Estimated Accuracy
 JU1844;SPC MD       -   205,520.      495,890.      MT  (+/- 180 meters Scaled)
 JU1844
 JU1844_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ239740(NAD 83)
 JU1844
 JU1844                          SUPERSEDED SURVEY CONTROL
 JU1844
 JU1844  NGVD 29 (11/26/84)    3.389  (m)           11.12   (f) ADJUSTED    1 2
 JU1844
 JU1844.Superseded values are not recommended for survey control.
 JU1844
 JU1844.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1844.See file dsdata.pdf to determine how the superseded data were derived.
 JU1844
 JU1844_MARKER: DB = BENCH MARK DISK
 JU1844_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JU1844_STAMPING: D 114 1971
 JU1844_MARK LOGO: CGS
 JU1844_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1844
 JU1844  HISTORY     - Date     Condition        Report By
 JU1844  HISTORY     - 1971     MONUMENTED       NGS
 JU1844  HISTORY     - 1984     GOOD             USPSQD
 JU1844
 JU1844                          STATION DESCRIPTION
 JU1844
 JU1844'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1844'4.7 MI SW FROM CHESAPEAKE CITY.
 JU1844'ABOUT 1.7 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1844'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1844'DELAWARE CANAL AT CHESAPEAKE CITY, THENCE 3.0 MILES WEST ALONG
 JU1844'COURT HOUSE POINT ROAD, AT COURT HOUSE POINT, 35 FEET SOUTHEAST
 JU1844'OF THE CENTER LINE OF THE ROAD WHICH LEADS TO A BOAT LANDING,
 JU1844'16.8 FEET EAST OF THE EAST CORNER OF THE CONCRETE FOUNDATION
 JU1844'FOR A GAS PUMP, 1.8 FEET EAST OF THE NORTH CORNER OF A SMALL
 JU1844'FRAME BUILDING, 21.8 FEET SOUTHWEST OF BENCH MARK Y 2, AND ON
 JU1844'THE TOP OF A COPPER COATED ROD WHICH IS LEVEL WITH THE GROUND
 JU1844'AND IS PROTECTED BY A 6-INCH METAL PIPE THAT PROJECTS 6 INCHES.
 JU1844'THE ROD WAS DRIVEN TO A DEPTH OF 90 FEET.  NOTE-- THIS MARK IS NOT
 JU1844'TO BE VISITED WITHOUT OBTAINING PERMISSION FROM THE OWNER OF
 JU1844'THE PROPERTY.
 JU1844
 JU1844                          STATION RECOVERY (1984)
 JU1844
 JU1844'RECOVERY NOTE BY US POWER SQUADRON 1984
 JU1844'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4128 ***********************************************************************
 JU4128  DESIGNATION -  D 118 RESET
 JU4128  PID         -  JU4128
 JU4128  STATE/COUNTY-  MD/CECIL
 JU4128  COUNTRY     -  US
 JU4128  USGS QUAD   -  ELKTON (2016)
 JU4128
 JU4128                         *CURRENT SURVEY CONTROL
 JU4128  ______________________________________________________________________
 JU4128* NAD 83(1986) POSITION- 39 36 07.5    (N) 075 50 03.1    (W)   HD_HELD2
 JU4128* NAVD 88 ORTHO HEIGHT -    10.178 (meters)       33.39  (feet) ADJUSTED
 JU4128  ______________________________________________________________________
 JU4128  GEOID HEIGHT    -        -33.158 (meters)                     GEOID18
 JU4128  DYNAMIC HEIGHT  -         10.173 (meters)       33.38  (feet) COMP
 JU4128  MODELED GRAVITY -    980,140.8   (mgal)                       NAVD 88
 JU4128
 JU4128  VERT ORDER      -  SECOND    CLASS I
 JU4128
 JU4128.The horizontal coordinates were established by autonomous hand held GPS
 JU4128.observations and have an estimated accuracy of +/- 10 meters.
 JU4128
 JU4128.The orthometric height was determined by differential leveling and
 JU4128.adjusted by the NATIONAL GEODETIC SURVEY
 JU4128.in October 2007.
 JU4128
 JU4128.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4128.GEOID18 height accuracy estimate available here.
 JU4128
 JU4128.Click photographs - Photos may exist for this station.
 JU4128
 JU4128.The dynamic height is computed by dividing the NAVD 88
 JU4128.geopotential number by the normal gravity value computed on the
 JU4128.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4128.degrees latitude (g = 980.6199 gals.).
 JU4128
 JU4128.The modeled gravity was interpolated from observed gravity values.
 JU4128
 JU4128;                    North         East    Units  Estimated Accuracy
 JU4128;SPC MD       -   215,488.      500,128.      MT  (+/- 10 meters HH2 GPS)
 JU4128
 JU4128_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2838183926(NAD 83)
 JU4128
 JU4128                          SUPERSEDED SURVEY CONTROL
 JU4128
 JU4128  NAVD 88 (11/18/05)   10.180  (m)           33.40   (f) SUPERSEDED  3 0
 JU4128  NGVD 29 (11/18/05)   10.42   (m)           34.2    (f) RESET       3  
 JU4128
 JU4128.Superseded values are not recommended for survey control.
 JU4128
 JU4128.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4128.See file dsdata.pdf to determine how the superseded data were derived.
 JU4128
 JU4128_MARKER: DV = VERTICAL CONTROL DISK
 JU4128_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JU4128_SP_SET: BRIDGE PARAPET WALL
 JU4128_STAMPING: D 118 RESET 1986
 JU4128_MARK LOGO: NGS
 JU4128_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4128_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU4128_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4128+SATELLITE: SATELLITE OBSERVATIONS - May 11, 2015
 JU4128
 JU4128  HISTORY     - Date     Condition        Report By
 JU4128  HISTORY     - 1986     MONUMENTED       NGS
 JU4128  HISTORY     - 20070606 GOOD             MDSHA
 JU4128  HISTORY     - 20120210 GOOD             MD-015
 JU4128  HISTORY     - 20150511 GOOD             JARICE
 JU4128
 JU4128                          STATION DESCRIPTION
 JU4128
 JU4128'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 JU4128'IN ELKTON.
 JU4128'0.65 KM (0.40 MI) WEST ALONG U.S. HIGHWAY 40 FROM ITS JUNCTION WITH
 JU4128'STATE HIGHWAY 213 AT ELKTON.  IN THE NORTH PART OF THE WEST ABUTMENT
 JU4128'OF A BRIDGE FOR THE EAST BOUND LANE OF U.S. HIGHWAY 40, IN THE TOP OF
 JU4128'THE PARAPET WALL, 5.2 M (17.1 FT) NORTH FROM THE CENTER OF THE EAST
 JU4128'BOUND LANE, 1.9 M (6.2 FT) EAST FROM THE WEST END OF THE NORTH
 JU4128'PARAPET WALL AND 1.8 M (5.9 FT) WEST FROM THE MOST WESTERLY EXPANSION
 JU4128'JOINT FOR THE BRIDGE.
 JU4128'THE MARK IS 6.4 METERS  E FROM  A WITNESS POST
 JU4128'THE MARK IS 1.0 M ABOVE BRIDGE DECK.
 JU4128
 JU4128                          STATION RECOVERY (2007)
 JU4128
 JU4128'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JU4128'RECOVERED AS DESCRIBED.
 JU4128
 JU4128                          STATION RECOVERY (2012)
 JU4128
 JU4128'RECOVERY NOTE BY CECIL COUNTY MARYLAND 2012 (DRB)
 JU4128'RECOVERED IN GOOD CONDITION.
 JU4128
 JU4128                          STATION RECOVERY (2015)
 JU4128
 JU4128'RECOVERY NOTE BY J A RICE INC 2015 (MRA)
 JU4128'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0612 ***********************************************************************
 HU0612  DESIGNATION -  D 119
 HU0612  PID         -  HU0612
 HU0612  STATE/COUNTY-  MD/WICOMICO
 HU0612  COUNTRY     -  US
 HU0612  USGS QUAD   -  HEBRON (2016)
 HU0612
 HU0612                         *CURRENT SURVEY CONTROL
 HU0612  ______________________________________________________________________
 HU0612* NAD 83(2011) POSITION- 38 24 10.28682(N) 075 38 03.35531(W)   ADJUSTED
 HU0612* NAD 83(2011) ELLIP HT-   -21.942 (meters)        (06/27/12)   ADJUSTED
 HU0612* NAD 83(2011) EPOCH   -  2010.00
 HU0612* NAVD 88 ORTHO HEIGHT -    13.807 (meters)       45.30  (feet) ADJUSTED
 HU0612  ______________________________________________________________________
 HU0612  GEOID HEIGHT    -        -35.744 (meters)                     GEOID18
 HU0612  NAD 83(2011) X  -  1,241,733.389 (meters)                     COMP
 HU0612  NAD 83(2011) Y  - -4,848,267.565 (meters)                     COMP
 HU0612  NAD 83(2011) Z  -  3,940,570.970 (meters)                     COMP
 HU0612  LAPLACE CORR    -         -1.30  (seconds)                    DEFLEC18
 HU0612  DYNAMIC HEIGHT  -         13.798 (meters)       45.27  (feet) COMP
 HU0612  MODELED GRAVITY -    980,009.1   (mgal)                       NAVD 88
 HU0612
 HU0612  VERT ORDER      -  FIRST     CLASS II
 HU0612
 HU0612  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0612  Standards:
 HU0612         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0612            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0612  -------------------------------------------------------------------
 HU0612  NETWORK    1.77   2.94           0.65   0.78   1.50     -0.18494948
 HU0612  -------------------------------------------------------------------
 HU0612  Click here for local accuracies and other accuracy information.
 HU0612
 HU0612.The horizontal coordinates were established by GPS observations
 HU0612.and adjusted by the National Geodetic Survey in June 2012.
 HU0612
 HU0612.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0612.been affixed to the stable North American tectonic plate. See 
 HU0612.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0612
 HU0612.The horizontal coordinates are valid at the epoch date displayed above
 HU0612.which is a decimal equivalence of Year/Month/Day.
 HU0612
 HU0612.The orthometric height was determined by differential leveling and
 HU0612.adjusted by the NATIONAL GEODETIC SURVEY
 HU0612.in June 1991.
 HU0612
 HU0612.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0612.GEOID18 height accuracy estimate available here.
 HU0612
 HU0612.Click photographs - Photos may exist for this station.
 HU0612
 HU0612.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0612
 HU0612.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0612
 HU0612.The ellipsoidal height was determined by GPS observations
 HU0612.and is referenced to NAD 83.
 HU0612
 HU0612.The dynamic height is computed by dividing the NAVD 88
 HU0612.geopotential number by the normal gravity value computed on the
 HU0612.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0612.degrees latitude (g = 980.6199 gals.).
 HU0612
 HU0612.The modeled gravity was interpolated from observed gravity values.
 HU0612
 HU0612. The following values were computed from the NAD 83(2011) position.
 HU0612
 HU0612;                    North         East     Units Scale Factor Converg.
 HU0612;SPC MD       -    82,612.604   519,290.254   MT  0.99998370   +0 51 25.9
 HU0612;SPC MD       -   271,038.18  1,703,704.77   sFT  0.99998370   +0 51 25.9
 HU0612;UTM  18      - 4,250,704.848   444,618.947   MT  0.99963777   -0 23 38.4
 HU0612
 HU0612!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0612!SPC MD       -   1.00000344  x   0.99998370  =   0.99998714
 HU0612!UTM  18      -   1.00000344  x   0.99963777  =   0.99964121
 HU0612
 HU0612_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4461850704(NAD 83)
 HU0612
 HU0612                          SUPERSEDED SURVEY CONTROL
 HU0612
 HU0612  NAD 83(2007)-  38 24 10.28716(N)    075 38 03.35598(W) AD(2002.00) 1
 HU0612  ELLIP H (04/02/09)  -21.913  (m)                       GP(2002.00) 4 1
 HU0612  NAD 83(1991)-  38 24 10.28717(N)    075 38 03.35561(W) AD(       ) 1
 HU0612  ELLIP H (10/15/07)  -21.903  (m)                       GP(       ) 4 1
 HU0612  NAVD 88              13.81   (m)           45.3    (f) LEVELING    3  
 HU0612  NGVD 29 (11/26/84)   14.050  (m)           46.10   (f) ADJUSTED    1 2
 HU0612
 HU0612.Superseded values are not recommended for survey control.
 HU0612
 HU0612.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0612.See file dsdata.pdf to determine how the superseded data were derived.
 HU0612
 HU0612_MARKER: DB = BENCH MARK DISK
 HU0612_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU0612+WITH SETTING: INTO GROUND
 HU0612_STAMPING: D 119 1971
 HU0612_MARK LOGO: CGS
 HU0612_MAGNETIC: I = MARKER IS A STEEL ROD
 HU0612_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0612_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0612+SATELLITE: SATELLITE OBSERVATIONS - August 03, 2021
 HU0612
 HU0612  HISTORY     - Date     Condition        Report By
 HU0612  HISTORY     - 1971     MONUMENTED       NGS
 HU0612  HISTORY     - 20020531 GOOD             MDSHA
 HU0612  HISTORY     - 20210803 GOOD             BASE9
 HU0612
 HU0612                          STATION DESCRIPTION
 HU0612
 HU0612'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0612'3.5 MI NW FROM SALISBURY.
 HU0612'ABOUT 0.1 MILE NORTH ALONG DIVISION STREET FROM THE COURTHOUSE AT
 HU0612'SALISBURY, THENCE 3.4 MILES NORTHWEST ALONG U.S. HIGHWAY 50, 110
 HU0612'FEET SOUTHWEST OF THE CENTER LINE OF THE SOUTHWEST LANE OF THE
 HU0612'HIGHWAY, 34 FEET NORTHWEST OF THE CENTER LINE OF ROCKAWALKIN
 HU0612'RIDGE ROAD, 22 FEET SOUTHWEST OF THE CENTER LINE OF STANTON
 HU0612'AVENUE, 47 FEET SOUTHWEST OF AND ACROSS STANTON AVENUE FROM POWER
 HU0612'LINE POLE 76-T 34, 8.3 FEET NORTHWEST OF A PIPE CORNER POST IN A
 HU0612'CHAIN LINK FENCE, 1.6 FEET NORTHEAST OF THE CHAIN LINK FENCE, 1.4
 HU0612'FEET NORTHEAST OF A METAL WITNESS POST, 1/2 FOOT BELOW THE LEVEL
 HU0612'OF STANTON AVENUE, ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD
 HU0612'THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS 5 INCHES
 HU0612'BELOW THE SURFACE OF THE GROUND AND ENCASED IN A 5 INCH PIPE THAT
 HU0612'IS 3 INCHES BELOW THE LEVEL OF THE GROUND.
 HU0612
 HU0612                          STATION RECOVERY (2002)
 HU0612
 HU0612'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 HU0612'RECOVERED AS DESCRIBED.
 HU0612
 HU0612                          STATION RECOVERY (2021)
 HU0612
 HU0612'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2021 (RSD)
 HU0612'WITNESS POST MENTIONED IN THE 1971 DESCRIPTION IS GONE.  MARK IS STILL
 HU0612'RECESSED 0.13 M (0.4 FT) AND IS 0.64 M (2.1 FT) BEHIND A UTILITY BOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2542 ***********************************************************************
 JV2542  DESIGNATION -  D 12 RESET
 JV2542  PID         -  JV2542
 JV2542  STATE/COUNTY-  MD/FREDERICK
 JV2542  COUNTRY     -  US
 JV2542  USGS QUAD   -  WALKERSVILLE (2016)
 JV2542
 JV2542                         *CURRENT SURVEY CONTROL
 JV2542  ______________________________________________________________________
 JV2542* NAD 83(1986) POSITION- 39 29 46.     (N) 077 20 44.     (W)   SCALED
 JV2542* NAVD 88 ORTHO HEIGHT -    98.33  (meters)      322.6   (feet) RESET
 JV2542  ______________________________________________________________________
 JV2542  GEOID HEIGHT    -        -32.806 (meters)                     GEOID18
 JV2542  VERT ORDER      -  THIRD
 JV2542
 JV2542.The horizontal coordinates were scaled from a map and have
 JV2542.an estimated accuracy of +/- 6 seconds.
 JV2542
 JV2542.The orthometric height was computed from unverified reset data.
 JV2542
 JV2542.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2542.GEOID18 height accuracy estimate available here.
 JV2542
 JV2542.Click photographs - Photos may exist for this station.
 JV2542
 JV2542;                    North         East    Units  Estimated Accuracy
 JV2542;SPC MD       -   203,140.      370,280.      MT  (+/- 180 meters Scaled)
 JV2542
 JV2542_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ983744(NAD 83)
 JV2542
 JV2542                          SUPERSEDED SURVEY CONTROL
 JV2542
 JV2542  NGVD 29 (??/??/??)   98.55   (m)          323.3    (f) RESET       3  
 JV2542
 JV2542.Superseded values are not recommended for survey control.
 JV2542
 JV2542.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2542.See file dsdata.pdf to determine how the superseded data were derived.
 JV2542
 JV2542_STAMPING: D 12 RESET 1971
 JV2542_MARK LOGO: CGS
 JV2542_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2542+SATELLITE: SATELLITE OBSERVATIONS - June 20, 2010
 JV2542
 JV2542  HISTORY     - Date     Condition        Report By
 JV2542  HISTORY     - 1971     MONUMENTED       NGS
 JV2542  HISTORY     - 19970811 MARK NOT FOUND   USPSQD
 JV2542  HISTORY     - 20100620 GOOD             GEOCAC
 JV2542  HISTORY     - 20190919 MARK NOT FOUND   NGS
 JV2542
 JV2542                          STATION DESCRIPTION
 JV2542
 JV2542'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV2542'0.9 MI N FROM WALKERSVILLE.
 JV2542'ABOUT 0.9 MILE NORTHEAST ALONG THE PENNSYLVANIA RAILROAD STATION
 JV2542'AT WALKERSVILLE, ABOUT 1,250 FEET NORTH OF MILEPOST 7, AT A
 JV2542'COUNTY ROAD CROSSING (DEVILBISS BRIDGE ROAD), 42 FEET SOUTHEAST
 JV2542'OF THE CENTER OF INTERSECTION OF COUNTY ROAD AND RAILROAD
 JV2542'CROSSING, 36.5 FEET EAST OF THE EAST RAIL OF THE RAILROAD, 24.0
 JV2542'FEET SOUTH OF THE CENTERLINE OF COUNTY ROAD, 3.5 FEET SOUTHEAST
 JV2542'OF POWERLINE POLE NO. PE F19698, 1.0 FOOT WEST A METAL WITNESS
 JV2542'SIGN AND POST, AND ABOUT 3 FEET ABOVE THE LEVEL OF THE ROAD.  A
 JV2542'USC AND GS BENCH MARK DISK SET IN ROUND CONCRETE MONUMENT FLUSH
 JV2542'WITH THE SURFACE OF GROUND.
 JV2542
 JV2542                          STATION RECOVERY (1997)
 JV2542
 JV2542'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV2542'MARK NOT FOUND.
 JV2542
 JV2542                          STATION RECOVERY (2010)
 JV2542
 JV2542'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2542'RECOVERED IN GOOD CONDITION. STATION IS NOW 26FT NW OF TELEPHONE POLE
 JV2542'1199385 AND 7.5FT SE OF METAL PIPE VENT.
 JV2542
 JV2542                          STATION RECOVERY (2019)
 JV2542
 JV2542'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV2542'THE STATION IS LOCATED ABOUT 5.7 MI (9.2 KM) WEST OF LIBERTYTOWN, 3.0
 JV2542'MI (4.8 KM) SOUTH-SOUTHWEST OF WOODSBORO AND 0.8 MI (1.3 KM)
 JV2542'NORTH-NORTHEAST OF WALKERSVILLE.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV2542'
 JV2542'THE AREA HAS BEEN PART OF A NEW DEVELOPMENT AND THE AREA REGRADED AND
 JV2542'A SIDEWALK PUT IN AND THE GROUND IS NOW LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1011 ***********************************************************************
 HU1011  DESIGNATION -  D 120
 HU1011  PID         -  HU1011
 HU1011  STATE/COUNTY-  MD/DORCHESTER
 HU1011  COUNTRY     -  US
 HU1011  USGS QUAD   -  EAST NEW MARKET (2016)
 HU1011
 HU1011                         *CURRENT SURVEY CONTROL
 HU1011  ______________________________________________________________________
 HU1011* NAD 83(1986) POSITION- 38 33 14.4    (N) 075 58 53.2    (W)   HD_HELD2
 HU1011* NAVD 88 ORTHO HEIGHT -     5.926 (meters)       19.44  (feet) ADJUSTED
 HU1011  ______________________________________________________________________
 HU1011  GEOID HEIGHT    -        -35.212 (meters)                     GEOID18
 HU1011  DYNAMIC HEIGHT  -          5.922 (meters)       19.43  (feet) COMP
 HU1011  MODELED GRAVITY -    980,017.0   (mgal)                       NAVD 88
 HU1011
 HU1011  VERT ORDER      -  FIRST     CLASS II
 HU1011
 HU1011.The horizontal coordinates were established by autonomous hand held GPS
 HU1011.observations and have an estimated accuracy of +/- 10 meters.
 HU1011
 HU1011.The orthometric height was determined by differential leveling and
 HU1011.adjusted by the NATIONAL GEODETIC SURVEY
 HU1011.in June 1991.
 HU1011
 HU1011.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1011.GEOID18 height accuracy estimate available here.
 HU1011
 HU1011.Click photographs - Photos may exist for this station.
 HU1011
 HU1011.The dynamic height is computed by dividing the NAVD 88
 HU1011.geopotential number by the normal gravity value computed on the
 HU1011.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1011.degrees latitude (g = 980.6199 gals.).
 HU1011
 HU1011.The modeled gravity was interpolated from observed gravity values.
 HU1011
 HU1011;                    North         East    Units  Estimated Accuracy
 HU1011;SPC MD       -    98,993.      488,780.      MT  (+/- 10 meters HH2 GPS)
 HU1011
 HU1011_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1448367741(NAD 83)
 HU1011
 HU1011                          SUPERSEDED SURVEY CONTROL
 HU1011
 HU1011  NGVD 29 (11/26/84)    6.160  (m)           20.21   (f) ADJUSTED    1 2
 HU1011
 HU1011.Superseded values are not recommended for survey control.
 HU1011
 HU1011.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1011.See file dsdata.pdf to determine how the superseded data were derived.
 HU1011
 HU1011_MARKER: DB = BENCH MARK DISK
 HU1011_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU1011_SP_SET: BOX CULVERT
 HU1011_STAMPING: D 120 1971
 HU1011_MARK LOGO: CGS
 HU1011_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1011+STABILITY: SURFACE MOTION
 HU1011_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1011+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2007
 HU1011
 HU1011  HISTORY     - Date     Condition        Report By
 HU1011  HISTORY     - 1971     MONUMENTED       NGS
 HU1011  HISTORY     - 20060329 GOOD             USPSQD
 HU1011  HISTORY     - 20070330 GOOD             USPSQD
 HU1011
 HU1011                          STATION DESCRIPTION
 HU1011
 HU1011'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU1011'2.2 MI NW FROM LINKWOOD.
 HU1011'ABOUT 2.15 MILES NORTHWEST ALONG U.S. HIGHWAY 50 FROM THE POST
 HU1011'OFFICE AT LINKWOOD, 261 FEET SOUTHEAST OF THE CENTER OF THE
 HU1011'JUNCTION OF A PAVED ROAD (OLD U.S. HIGHWAY 50), 36 FEET SOUTHWEST
 HU1011'OF THE CENTER LINE OF THE SOUTHWEST LANES OF THE HIGHWAY, SET IN
 HU1011'THE TOP OF THE SOUTHEAST END OF THE SOUTHWEST CONCRETE HEADWALL
 HU1011'OF A 6- X 10-FOOT CONCRETE BOX CULVERT, 11.3 FEET SOUTHWEST OF A
 HU1011'METAL GUARDRAIL, AND ABOUT 3 1/2 FEET BELOW THE LEVEL OF THE
 HU1011'HIGHWAY.
 HU1011
 HU1011                          STATION RECOVERY (2006)
 HU1011
 HU1011'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU1011'NEAR HIGHWAY DRAINAGE MARKER 09008X0, JUST PAST CHATEAU ROAED OFF
 HU1011'THE EAST BOUND LANES OF US 50.
 HU1011
 HU1011                          STATION RECOVERY (2007)
 HU1011
 HU1011'RECOVERY NOTE BY US POWER SQUADRON 2007 (NLH)
 HU1011'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1112 ***********************************************************************
 JV1112  DESIGNATION -  D 121
 JV1112  PID         -  JV1112
 JV1112  STATE/COUNTY-  MD/BALTIMORE
 JV1112  COUNTRY     -  US
 JV1112  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1112
 JV1112                         *CURRENT SURVEY CONTROL
 JV1112  ______________________________________________________________________
 JV1112* NAD 83(1986) POSITION- 39 19 04.3    (N) 076 31 08.6    (W)   HD_HELD2
 JV1112* NAVD 88 ORTHO HEIGHT -    13.279 (meters)       43.57  (feet) ADJUSTED
 JV1112  ______________________________________________________________________
 JV1112  GEOID HEIGHT    -        -32.892 (meters)                     GEOID18
 JV1112  DYNAMIC HEIGHT  -         13.272 (meters)       43.54  (feet) COMP
 JV1112  MODELED GRAVITY -    980,099.9   (mgal)                       NAVD 88
 JV1112
 JV1112  VERT ORDER      -  FIRST     CLASS I
 JV1112
 JV1112.The horizontal coordinates were established by autonomous hand held GPS
 JV1112.observations and have an estimated accuracy of +/- 10 meters.
 JV1112
 JV1112.The orthometric height was determined by differential leveling and
 JV1112.adjusted by the NATIONAL GEODETIC SURVEY
 JV1112.in February 1998.
 JV1112
 JV1112.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1112.GEOID18 height accuracy estimate available here.
 JV1112
 JV1112.Click photographs - Photos may exist for this station.
 JV1112
 JV1112.The dynamic height is computed by dividing the NAVD 88
 JV1112.geopotential number by the normal gravity value computed on the
 JV1112.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1112.degrees latitude (g = 980.6199 gals.).
 JV1112
 JV1112.The modeled gravity was interpolated from observed gravity values.
 JV1112
 JV1112;                    North         East    Units  Estimated Accuracy
 JV1112;SPC MD       -   183,403.      441,474.      MT  (+/- 10 meters HH2 GPS)
 JV1112
 JV1112_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6904953150(NAD 83)
 JV1112
 JV1112                          SUPERSEDED SURVEY CONTROL
 JV1112
 JV1112  NAVD 88 (06/15/91)   13.293  (m)           43.61   (f) SUPERSEDED  1 1
 JV1112  NGVD 29 (11/26/84)   13.537  (m)           44.41   (f) ADJUSTED    1 1
 JV1112
 JV1112.Superseded values are not recommended for survey control.
 JV1112
 JV1112.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1112.See file dsdata.pdf to determine how the superseded data were derived.
 JV1112
 JV1112_MARKER: DB = BENCH MARK DISK
 JV1112_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV1112_STAMPING: D 121 1971
 JV1112_MARK LOGO: CGS
 JV1112_PROJECTION: FLUSH
 JV1112_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1112_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1112_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1112+SATELLITE: SATELLITE OBSERVATIONS - April 29, 2021
 JV1112
 JV1112  HISTORY     - Date     Condition        Report By
 JV1112  HISTORY     - 1971     MONUMENTED       NGS
 JV1112  HISTORY     - 19950131 GOOD             MCCRON
 JV1112  HISTORY     - 19950720 GOOD             USPSQD
 JV1112  HISTORY     - 19950725 GOOD             USPSQD
 JV1112  HISTORY     - 20020719 GOOD             WR
 JV1112  HISTORY     - 20210429 GOOD             MDSHA
 JV1112
 JV1112                          STATION DESCRIPTION
 JV1112
 JV1112'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV1112'AT ROSEDALE.
 JV1112'AT ROSEDALE, ABOUT 0.1 MILE SOUTHWEST ALONG STATE HIGHWAY 7 FROM
 JV1112'THE FIRE STATION, NEAR THE SOUTH CORNER OF THE BETH HAMEDROSH
 JV1112'HAGODOL-CHEVRAH MOGAN ABRAHAM CEMETERY, 35 FEET NORTHWEST OF THE
 JV1112'CENTER LINE OF THE HIGHWYA, 25.4 FEET NORTHEAST OF THE SOUTH
 JV1112'CORNER OF A 2- X 2-FOOT CONCRETE POST AT THE SOUTH CORNER OF A
 JV1112'FENCE AROUND THE CEMETERY, 163 FEET SOUTHWEST OF THE CENTER LINE
 JV1112'OF THE DRIVEWAY TO THE CEMETERY, 1 FOOT SOUTHEAST OF THE FENCE,
 JV1112'ABOUT 3 FEET ABOVE THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF
 JV1112'A COPPER COATED ROD THAT IS LEVEL WITH THE SURFACE OF THE GROUND
 JV1112'AND IS PROTECTED BY A 6-INCH TILE THAT IS LEVEL WITH THE SURFACE
 JV1112'OF THE GROUND.  THE ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF
 JV1112'10 1/2 FEET.
 JV1112
 JV1112                          STATION RECOVERY (1995)
 JV1112
 JV1112'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV1112'RECOVERED AS DESCRIBED.
 JV1112
 JV1112                          STATION RECOVERY (1995)
 JV1112
 JV1112'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1112'RECOVERED IN GOOD CONDITION.
 JV1112
 JV1112                          STATION RECOVERY (1995)
 JV1112
 JV1112'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1112'RECOVERED IN GOOD CONDITION.
 JV1112
 JV1112                          STATION RECOVERY (2002)
 JV1112
 JV1112'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (RTD)
 JV1112'RECOVERED IN GOOD CONDITION.
 JV1112
 JV1112                          STATION RECOVERY (2021)
 JV1112
 JV1112'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV1112'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0294 ***********************************************************************
 JV0294  DESIGNATION -  D 122
 JV0294  PID         -  JV0294
 JV0294  STATE/COUNTY-  MD/QUEEN ANNES
 JV0294  COUNTRY     -  US
 JV0294  USGS QUAD   -  CENTREVILLE (2017)
 JV0294
 JV0294                         *CURRENT SURVEY CONTROL
 JV0294  ______________________________________________________________________
 JV0294* NAD 83(1986) POSITION- 39 06 27.5    (N) 076 01 38.8    (W)   HD_HELD2
 JV0294* NAVD 88 ORTHO HEIGHT -     6.140 (meters)       20.14  (feet) ADJUSTED
 JV0294  ______________________________________________________________________
 JV0294  GEOID HEIGHT    -        -33.678 (meters)                     GEOID18
 JV0294  DYNAMIC HEIGHT  -          6.137 (meters)       20.13  (feet) COMP
 JV0294  MODELED GRAVITY -    980,100.8   (mgal)                       NAVD 88
 JV0294
 JV0294  VERT ORDER      -  FIRST     CLASS II
 JV0294
 JV0294.The horizontal coordinates were established by autonomous hand held GPS
 JV0294.observations and have an estimated accuracy of +/- 10 meters.
 JV0294
 JV0294.The orthometric height was determined by differential leveling and
 JV0294.adjusted by the NATIONAL GEODETIC SURVEY
 JV0294.in June 1991.
 JV0294
 JV0294.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0294.GEOID18 height accuracy estimate available here.
 JV0294
 JV0294.Click photographs - Photos may exist for this station.
 JV0294
 JV0294.The dynamic height is computed by dividing the NAVD 88
 JV0294.geopotential number by the normal gravity value computed on the
 JV0294.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0294.degrees latitude (g = 980.6199 gals.).
 JV0294
 JV0294.The modeled gravity was interpolated from observed gravity values.
 JV0294
 JV0294;                    North         East    Units  Estimated Accuracy
 JV0294;SPC MD       -   160,403.      484,116.      MT  (+/- 10 meters HH2 GPS)
 JV0294
 JV0294_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1116529223(NAD 83)
 JV0294
 JV0294                          SUPERSEDED SURVEY CONTROL
 JV0294
 JV0294  NGVD 29 (11/26/84)    6.379  (m)           20.93   (f) ADJUSTED    1 2
 JV0294
 JV0294.Superseded values are not recommended for survey control.
 JV0294
 JV0294.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0294.See file dsdata.pdf to determine how the superseded data were derived.
 JV0294
 JV0294_MARKER: DB = BENCH MARK DISK
 JV0294_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0294_SP_SET: BRIDGE ABUTMENT
 JV0294_STAMPING: D 122 1971
 JV0294_MARK LOGO: CGS
 JV0294_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0294_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0294+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV0294
 JV0294  HISTORY     - Date     Condition        Report By
 JV0294  HISTORY     - 1971     MONUMENTED       NGS
 JV0294  HISTORY     - 19901128 GOOD             USPSQD
 JV0294  HISTORY     - 20000326 GOOD             USPSQD
 JV0294  HISTORY     - 20060318 GOOD             USPSQD
 JV0294  HISTORY     - 20150822 GOOD             USPSQD
 JV0294  HISTORY     - 20250731 GOOD             PROFLN
 JV0294
 JV0294                          STATION DESCRIPTION
 JV0294
 JV0294'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0294'ABOUT 3.85 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JV0294'JUNCTION OF STATE HIGHWAY 300 AT CHURCH HILL, SET ON THE TOP
 JV0294'OF THE NORTHWEST END OF THE SOUTHWEST CONCRETE ABUTMENT FOR A
 JV0294'BRIDGE OVER GRANNY FINLEY BRANCH, 21.5 FEET NORTHWEST OF THE
 JV0294'CENTER LINE OF THE HIGHWAY AND 1 FOOT ABOVE THE LEVEL OF THE
 JV0294'HIGHWAY.
 JV0294
 JV0294                          STATION RECOVERY (1990)
 JV0294
 JV0294'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0294'RECOVERED IN GOOD CONDITION.
 JV0294
 JV0294                          STATION RECOVERY (2000)
 JV0294
 JV0294'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 JV0294'RECOVERED IN GOOD CONDITION.
 JV0294
 JV0294                          STATION RECOVERY (2006)
 JV0294
 JV0294'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JV0294'RECOVERED IN GOOD CONDITION.
 JV0294
 JV0294                          STATION RECOVERY (2015)
 JV0294
 JV0294'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0294'RECOVERED AS DESCRIBED.
 JV0294
 JV0294                          STATION RECOVERY (2025)
 JV0294
 JV0294'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0294'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0682 ***********************************************************************
 JV0682  DESIGNATION -  D 123
 JV0682  PID         -  JV0682
 JV0682  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0682  COUNTRY     -  US
 JV0682  USGS QUAD   -  BELTSVILLE (2016)
 JV0682
 JV0682                         *CURRENT SURVEY CONTROL
 JV0682  ______________________________________________________________________
 JV0682* NAD 83(1986) POSITION- 39 01 20.     (N) 076 55 28.     (W)   SCALED
 JV0682* NAVD 88 ORTHO HEIGHT -    53.274 (meters)      174.78  (feet) ADJUSTED
 JV0682  ______________________________________________________________________
 JV0682  GEOID HEIGHT    -        -32.130 (meters)                     GEOID18
 JV0682  DYNAMIC HEIGHT  -         53.246 (meters)      174.69  (feet) COMP
 JV0682  MODELED GRAVITY -    980,104.4   (mgal)                       NAVD 88
 JV0682  OBS GRAVITY     -    980,102.8   (mgal)                       GRAV_OBS
 JV0682
 JV0682  VERT ORDER      -  FIRST     CLASS I
 JV0682
 JV0682.The horizontal coordinates were scaled from a map and have
 JV0682.an estimated accuracy of +/- 6 seconds.
 JV0682
 JV0682.The orthometric height was determined by differential leveling and
 JV0682.adjusted by the NATIONAL GEODETIC SURVEY
 JV0682.in June 1991.
 JV0682
 JV0682.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0682.GEOID18 height accuracy estimate available here.
 JV0682
 JV0682.Click photographs - Photos may exist for this station.
 JV0682
 JV0682.The dynamic height is computed by dividing the NAVD 88
 JV0682.geopotential number by the normal gravity value computed on the
 JV0682.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0682.degrees latitude (g = 980.6199 gals.).
 JV0682
 JV0682.The modeled gravity was interpolated from observed gravity values.
 JV0682
 JV0682.The observed gravity was obtained from relative gravimeter ties
 JV0682.to the IGSN71 gravity network.
 JV0682
 JV0682;                    North         East    Units  Estimated Accuracy
 JV0682;SPC MD       -   150,480.      406,540.      MT  (+/- 180 meters Scaled)
 JV0682
 JV0682_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ334210(NAD 83)
 JV0682
 JV0682                          SUPERSEDED SURVEY CONTROL
 JV0682
 JV0682  NGVD 29 (11/26/84)   53.502  (m)          175.53   (f) ADJUSTED    1 1
 JV0682
 JV0682.Superseded values are not recommended for survey control.
 JV0682
 JV0682.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0682.See file dsdata.pdf to determine how the superseded data were derived.
 JV0682
 JV0682_MARKER: DB = BENCH MARK DISK
 JV0682_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0682_STAMPING: D 123 1971
 JV0682_MARK LOGO: CGS
 JV0682_PROJECTION: RECESSED 4 CENTIMETERS
 JV0682_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0682_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0682+SATELLITE: SATELLITE OBSERVATIONS - October 15, 1990
 JV0682_ROD/PIPE-DEPTH: 10.7 meters
 JV0682
 JV0682  HISTORY     - Date     Condition        Report By
 JV0682  HISTORY     - 1971     MONUMENTED       NGS
 JV0682  HISTORY     - 19901015 GOOD             NGS
 JV0682
 JV0682                          STATION DESCRIPTION
 JV0682
 JV0682'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0682'1.3 MI SW FROM BELTSVILLE.
 JV0682'ABOUT 1.3 MILES SOUTHWEST ALONG U.S. HIGHWAY 1 FROM THE
 JV0682'INTERSECTION OF STATE HIGHWAY 212 AT BELTSVILLE, AT THE
 JV0682'SOUTHEAST ENTRANCE TO THE U.S. DEPARTMENT OF AGRICULTURE PLANT
 JV0682'INDUSTRY STATION, 66 1/2 FEET NORTH OF THE CENTER OF THE
 JV0682'INTERSECTION OF THE HIGHWAY AND THE ROAD WHICH LEADS TO THE
 JV0682'DEPARTMENT OF AGRICULTURE, 63 1/2 FEET NORTHWEST OF THE
 JV0682'CENTER LINE OF THE HIGHWAY, 10.4 FEET WEST OF THE WEST CORNER
 JV0682'OF A BRICK WAITING STATION, 1 FOOT NORTHWEST OF POWER POLE
 JV0682'NUMBER 811946, 1.0 FOOT EAST OF A METAL WITNESS POST, ABOUT
 JV0682'LEVEL WITH THE HIGHWAY, AND ON THE TOP OF A COPPER COATED ROD
 JV0682'WHICH IS LEVEL WITH THE SURFACE OF THE GROUND AND IS PROTECTED
 JV0682'BY A METAL PIPE WHICH PROJECTS 1 INCH.  THE ROD WAS DRIVEN
 JV0682'TO REFUSAL AT A DEPTH OF 38 FEET.
 JV0682
 JV0682                          STATION RECOVERY (1990)
 JV0682
 JV0682'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV0682'0.7 KM (0.4 MI) NORTHERLY ALONG U.S. HIGHWAY 1 FROM THE JUNCTION OF
 JV0682'INTERSTATE HIGHWAY 495 (CAPITOL BELTWAY) IN COLLEGE PARK (EXIT 25A),
 JV0682'19.8 M (65.0 FT) NORTHWEST OF AND LEVEL WITH THE HIGHWAY CENTERLINE,
 JV0682'7.3 M (24.0 FT) NORTHEAST OF THE CENTERLINE OF THE ENTRANCE TO THE
 JV0682'U.S. DEPARTMENT OF AGRICULTURE PLANT INDUSTRY STATION, 3.2 M
 JV0682'(10.5 FT)  WEST OF THE NORTHWEST CORNER OF A BRICK METRO BUS WAITING
 JV0682'STATION, 0.4 M (1.3 FT) SOUTHEAST OF A WITNESS POST, AND 0.3 M
 JV0682'(1.0 FT) NORTHWEST OF UTILITY POLE NUMBER 821433-6753. NOTE--THE ROD
 JV0682'IS ENCASED IN A 4-INCH IRON PIPE THAT IS 0.1 M (0.3 FT) BELOW THE
 JV0682'GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR5240 ***********************************************************************
 DR5240  DESIGNATION -  D 124 RESET
 DR5240  PID         -  DR5240
 DR5240  STATE/COUNTY-  MD/DORCHESTER
 DR5240  COUNTRY     -  US
 DR5240  USGS QUAD   -  CHURCH CREEK (2016)
 DR5240
 DR5240                         *CURRENT SURVEY CONTROL
 DR5240  ______________________________________________________________________
 DR5240* NAD 83(1986) POSITION- 38 30 07.2    (N) 076 09 10.1    (W)   HD_HELD2
 DR5240* NAVD 88 ORTHO HEIGHT -     0.641 (meters)        2.10  (feet) ADJUSTED
 DR5240  ______________________________________________________________________
 DR5240  GEOID HEIGHT    -        -35.004 (meters)                     GEOID18
 DR5240  DYNAMIC HEIGHT  -          0.641 (meters)        2.10  (feet) COMP
 DR5240  MODELED GRAVITY -    980,013.0   (mgal)                       NAVD 88
 DR5240
 DR5240  VERT ORDER      -  FIRST     CLASS II
 DR5240
 DR5240.The horizontal coordinates were established by autonomous hand held GPS
 DR5240.observations and have an estimated accuracy of +/- 10 meters.
 DR5240
 DR5240.The orthometric height was determined by differential leveling and
 DR5240.adjusted by the NATIONAL GEODETIC SURVEY
 DR5240.in August 2020.
 DR5240
 DR5240.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR5240.GEOID18 height accuracy estimate available here.
 DR5240
 DR5240.Click photographs - Photos may exist for this station.
 DR5240
 DR5240.The dynamic height is computed by dividing the NAVD 88
 DR5240.geopotential number by the normal gravity value computed on the
 DR5240.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR5240.degrees latitude (g = 980.6199 gals.).
 DR5240
 DR5240.The modeled gravity was interpolated from observed gravity values.
 DR5240
 DR5240;                    North         East    Units  Estimated Accuracy
 DR5240;SPC MD       -    93,068.      473,898.      MT  (+/- 10 meters HH2 GPS)
 DR5240
 DR5240_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9947962144(NAD 83)
 DR5240
 DR5240                          SUPERSEDED SURVEY CONTROL
 DR5240
 DR5240.No superseded survey control is available for this station.
 DR5240
 DR5240_MARKER: DV = VERTICAL CONTROL DISK
 DR5240_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR5240_STAMPING: D 124 RESET 2020
 DR5240_MARK LOGO: NGS
 DR5240_PROJECTION: RECESSED 10 CENTIMETERS
 DR5240_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR5240_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR5240+STABILITY: SURFACE MOTION
 DR5240_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR5240+SATELLITE: SATELLITE OBSERVATIONS - May 11, 2020
 DR5240
 DR5240  HISTORY     - Date     Condition        Report By
 DR5240  HISTORY     - 20200511 MONUMENTED       MDSHA
 DR5240
 DR5240                          STATION DESCRIPTION
 DR5240
 DR5240'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (MRA)
 DR5240'THE MARK IS LOCATED ABOUT 8.0 MI (12.9 KM) NORTH-NORTHEAST OF GOLDEN
 DR5240'HILL, 5.8 MI (9.3 KM) SOUTHWEST OF CAMBRIDGE AND IN THE TOWN OF CHURCH
 DR5240'CREEK, MD.
 DR5240'
 DR5240'TO REACH FROM THE SOUTH END OF THE MALKUS BRIDGE OVER THE CHOPTANK
 DR5240'RIVER, GO EAST ON US 50 FOR 1.1 MI (1.8 KM) TO A CROSSROADS.  TURN
 DR5240'RIGHT AND GO SOUTH ON WOODS ROAD FOR 0.9 MI (1.4 KM) TO A TRAFFIC
 DR5240'CIRCLE.  TAKE THE FIRST EXIT AND GO WEST ON MD 16 FOR 6.2 MI (10.0 KM)
 DR5240'TO THE INTERSECTION WITH MD 335 ON THE LEFT AND THE MARK ON THE RIGHT
 DR5240'IN THE WEST CORNER OF THE INTERSECTION.
 DR5240'
 DR5240'IT IS 57.0 FT (17.4 M) SOUTHWEST OF THE EXTENDED CENTERLINE OF MD 335,
 DR5240'35.1 FT (10.7 M) SOUTHEAST OF DPL POWER POLE NUMBER 31052/98270, 29.7
 DR5240'FT (9.1 M) NORTHWEST OF THE CENTERLINE OF MD 16, 4.1 FT (1.2 M)
 DR5240'SOUTHEAST OF THE NORTHWEST FACE OF A CULVERT HEADWALL, 3.0 FT (0.9 M)
 DR5240'SOUTHEAST OF A WITNESS POST AND SET IN THE TOP OF A 12-IN (30 CM)
 DR5240'ROUND CONCRETE POST ABOUT 0.5 FT (15 CM) LOWER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0692 ***********************************************************************
 JV0692  DESIGNATION -  D 125
 JV0692  PID         -  JV0692
 JV0692  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0692  COUNTRY     -  US
 JV0692  USGS QUAD   -  ROUND BAY (2016)
 JV0692
 JV0692                         *CURRENT SURVEY CONTROL
 JV0692  ______________________________________________________________________
 JV0692* NAD 83(1986) POSITION- 39 03 08.1    (N) 076 31 22.1    (W)   HD_HELD2
 JV0692* NAVD 88 ORTHO HEIGHT -    11.923 (meters)       39.12  (feet) ADJUSTED
 JV0692  ______________________________________________________________________
 JV0692  GEOID HEIGHT    -        -33.169 (meters)                     GEOID18
 JV0692  DYNAMIC HEIGHT  -         11.917 (meters)       39.10  (feet) COMP
 JV0692  MODELED GRAVITY -    980,078.7   (mgal)                       NAVD 88
 JV0692
 JV0692  VERT ORDER      -  FIRST     CLASS II
 JV0692
 JV0692.The horizontal coordinates were established by autonomous hand held GPS
 JV0692.observations and have an estimated accuracy of +/- 10 meters.
 JV0692
 JV0692.The orthometric height was determined by differential leveling and
 JV0692.adjusted by the NATIONAL GEODETIC SURVEY
 JV0692.in June 1991.
 JV0692
 JV0692.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0692.GEOID18 height accuracy estimate available here.
 JV0692
 JV0692.Click photographs - Photos may exist for this station.
 JV0692
 JV0692.The dynamic height is computed by dividing the NAVD 88
 JV0692.geopotential number by the normal gravity value computed on the
 JV0692.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0692.degrees latitude (g = 980.6199 gals.).
 JV0692
 JV0692.The modeled gravity was interpolated from observed gravity values.
 JV0692
 JV0692;                    North         East    Units  Estimated Accuracy
 JV0692;SPC MD       -   153,914.      441,305.      MT  (+/- 10 meters HH2 GPS)
 JV0692
 JV0692_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6823123678(NAD 83)
 JV0692
 JV0692                          SUPERSEDED SURVEY CONTROL
 JV0692
 JV0692  NGVD 29 (11/26/84)   12.168  (m)           39.92   (f) ADJUSTED    1 2
 JV0692
 JV0692.Superseded values are not recommended for survey control.
 JV0692
 JV0692.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0692.See file dsdata.pdf to determine how the superseded data were derived.
 JV0692
 JV0692_MARKER: DB = BENCH MARK DISK
 JV0692_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0692_SP_SET: CULVERT HEADWALL
 JV0692_STAMPING: D 125 1971
 JV0692_MARK LOGO: CGS
 JV0692_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0692_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0692+STABILITY: SURFACE MOTION
 JV0692_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0692+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2005
 JV0692
 JV0692  HISTORY     - Date     Condition        Report By
 JV0692  HISTORY     - 1971     MONUMENTED       NGS
 JV0692  HISTORY     - 20010628 GOOD             MDSHA
 JV0692  HISTORY     - 20051215 GOOD             USPSQD
 JV0692
 JV0692                          STATION DESCRIPTION
 JV0692
 JV0692'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0692'4.8 MI NW FROM ANNAPOLIS.
 JV0692'ABOUT 1.6 MILES NORTHWEST ALONG STATE HIGHWAY 450 FROM THE
 JV0692'NORTHEAST END OF THE HIGHWAY BRIDGE OVER THE SEVERN RIVER AT
 JV0692'ANNAPOLIS, THENCE 3.25 MILES NORTHWEST ALONG STATE HIGHWAY 2,
 JV0692'ABOUT 0.45 MILE SOUTHEAST OF THE JUNCTION OF OLD JONES STATION
 JV0692'ROAD, SET IN THE TOP OF THE SOUTHEAST END OF THE NORTHEAST
 JV0692'CONCRETE HEADWALL OF AN 8-FOOT CONCRETE BOX CULVERT UNDER THE
 JV0692'HIGHWAY, 45 FEET NORTHEAST OF THE CENTER LINE OF THE NORTHEAST
 JV0692'LANES OF THE HIGHWAY, 0.8 FOOT NORTHWEST OF THE SOUTHEAST END
 JV0692'OF THE HEADWALL, AND ABOUT 8 FEET BELOW THE LEVEL OF THE HIGHWAY.
 JV0692
 JV0692                          STATION RECOVERY (2001)
 JV0692
 JV0692'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV0692'RECOVERED AS DESCRIBED.
 JV0692
 JV0692                          STATION RECOVERY (2005)
 JV0692
 JV0692'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV0692'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0171 ***********************************************************************
 HV0171  DESIGNATION -  D 126
 HV0171  PID         -  HV0171
 HV0171  STATE/COUNTY-  MD/QUEEN ANNES
 HV0171  COUNTRY     -  US
 HV0171  USGS QUAD   -  KENT ISLAND (2016)
 HV0171
 HV0171                         *CURRENT SURVEY CONTROL
 HV0171  ______________________________________________________________________
 HV0171* NAD 83(1986) POSITION- 38 58 28.     (N) 076 19 29.     (W)   SCALED
 HV0171* NAVD 88 ORTHO HEIGHT -     3.739 (meters)       12.27  (feet) ADJUSTED
 HV0171  ______________________________________________________________________
 HV0171  GEOID HEIGHT    -        -33.588 (meters)                     GEOID18
 HV0171  DYNAMIC HEIGHT  -          3.737 (meters)       12.26  (feet) COMP
 HV0171  MODELED GRAVITY -    980,080.7   (mgal)                       NAVD 88
 HV0171
 HV0171  VERT ORDER      -  FIRST     CLASS II
 HV0171
 HV0171.This mark is at Bay Bridge Airport (W29)
 HV0171
 HV0171.The horizontal coordinates were scaled from a map and have
 HV0171.an estimated accuracy of +/- 6 seconds.
 HV0171
 HV0171.The orthometric height was determined by differential leveling and
 HV0171.adjusted by the NATIONAL GEODETIC SURVEY
 HV0171.in June 1991.
 HV0171
 HV0171.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0171.GEOID18 height accuracy estimate available here.
 HV0171
 HV0171.Click photographs - Photos may exist for this station.
 HV0171
 HV0171.The dynamic height is computed by dividing the NAVD 88
 HV0171.geopotential number by the normal gravity value computed on the
 HV0171.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0171.degrees latitude (g = 980.6199 gals.).
 HV0171
 HV0171.The modeled gravity was interpolated from observed gravity values.
 HV0171
 HV0171;                    North         East    Units  Estimated Accuracy
 HV0171;SPC MD       -   145,390.      458,520.      MT  (+/- 180 meters Scaled)
 HV0171
 HV0171_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ852147(NAD 83)
 HV0171
 HV0171                          SUPERSEDED SURVEY CONTROL
 HV0171
 HV0171  NGVD 29 (11/26/84)    3.976  (m)           13.04   (f) ADJUSTED    1 2
 HV0171
 HV0171.Superseded values are not recommended for survey control.
 HV0171
 HV0171.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0171.See file dsdata.pdf to determine how the superseded data were derived.
 HV0171
 HV0171_MARKER: DB = BENCH MARK DISK
 HV0171_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0171+WITH SETTING: INTO GROUND
 HV0171_STAMPING: D 126 1971
 HV0171_MARK LOGO: CGS
 HV0171_PROJECTION: FLUSH
 HV0171_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0171+STABILITY: SURFACE MOTION
 HV0171
 HV0171  HISTORY     - Date     Condition        Report By
 HV0171  HISTORY     - 1971     MONUMENTED       NGS
 HV0171  HISTORY     - 1983     GOOD             USPSQD
 HV0171  HISTORY     - 19950712 GOOD             USPSQD
 HV0171  HISTORY     - 20000111 POOR             USPSQD
 HV0171  HISTORY     - 20010331 POOR             NGS
 HV0171  HISTORY     - 20050606 MARK NOT FOUND   USPSQD
 HV0171
 HV0171                          STATION DESCRIPTION
 HV0171
 HV0171'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0171'0.5 MI SW FROM STEVENSVILLE.
 HV0171'ABOUT 0.5 MILE SOUTHWEST ALONG STATE HIGHWAY 8 FROM THE
 HV0171'INTERSECTION OF U.S. HIGHWAYS 50 AND 301 AT STEVENSVILLE, AT THE
 HV0171'ENTRANCE TO THE BAY BRIDGE AIRPORT, 49 FEET NORTHWEST OF THE
 HV0171'CENTER LINE OF THE HIGHWAY, 259.7 FEET SOUTH OF THE SOUTHEAST
 HV0171'CORNER OF THE MAIN HANGAR AT THE AIRPORT, 17 FEET NORTHEAST OF
 HV0171'THE CENTER LINE OF A DRIVEWAY TO THE AIRPORT, 2 1/2 FEET
 HV0171'SOUTHEAST OF POWER POLE NUMBER 363B-40N, 1.2 FEET NORTHWEST OF
 HV0171'A METAL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, AND ON
 HV0171'THE TOP OF A 4-FOOT SECTION OF COPPER COATED ROD THAT IS
 HV0171'ATTACHED TO A METAL BASE PLATE.  THE DISK IS LEVEL WITH THE
 HV0171'SURFACE OF THE GROUND AND IS PORTECTED BY A 4-INCH METAL PIPE
 HV0171'THAT IS LEVEL WITH THE GROUND.
 HV0171
 HV0171                          STATION RECOVERY (1983)
 HV0171
 HV0171'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0171'RECOVERED IN GOOD CONDITION.
 HV0171
 HV0171                          STATION RECOVERY (1995)
 HV0171
 HV0171'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0171'RECOVERED IN GOOD CONDITION.
 HV0171
 HV0171                          STATION RECOVERY (2000)
 HV0171
 HV0171'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 HV0171'DISK IS BENT AND DEFORMED, PROBABLY BY HEAVY GRASS CUTTING EQUIPMENT.
 HV0171'DISK APPEARS TO BE LOOSE IN PROTECTIVE PIPE.
 HV0171
 HV0171                          STATION RECOVERY (2001)
 HV0171
 HV0171'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0171'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0171
 HV0171                          STATION RECOVERY (2005)
 HV0171
 HV0171'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HV0171'ROD BENT, DISK MISSING, 1.5 FEET SW OF A RELOCATED, DAMAGED METAL
 HV0171'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0533 ***********************************************************************
 HV0533  DESIGNATION -  D 128
 HV0533  PID         -  HV0533
 HV0533  STATE/COUNTY-  MD/ST MARYS
 HV0533  COUNTRY     -  US
 HV0533  USGS QUAD   -  ROCK POINT (2016)
 HV0533
 HV0533                         *CURRENT SURVEY CONTROL
 HV0533  ______________________________________________________________________
 HV0533* NAD 83(1986) POSITION- 38 21 57.     (N) 076 46 58.     (W)   SCALED
 HV0533* NAVD 88 ORTHO HEIGHT -     5.185 (meters)       17.01  (feet) ADJUSTED
 HV0533  ______________________________________________________________________
 HV0533  GEOID HEIGHT    -        -33.687 (meters)                     GEOID18
 HV0533  DYNAMIC HEIGHT  -          5.182 (meters)       17.00  (feet) COMP
 HV0533  MODELED GRAVITY -    980,015.4   (mgal)                       NAVD 88
 HV0533
 HV0533  VERT ORDER      -  FIRST     CLASS II
 HV0533
 HV0533.The horizontal coordinates were scaled from a map and have
 HV0533.an estimated accuracy of +/- 6 seconds.
 HV0533
 HV0533.The orthometric height was determined by differential leveling and
 HV0533.adjusted by the NATIONAL GEODETIC SURVEY
 HV0533.in June 1991.
 HV0533
 HV0533.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0533.GEOID18 height accuracy estimate available here.
 HV0533
 HV0533.Click photographs - Photos may exist for this station.
 HV0533
 HV0533.The dynamic height is computed by dividing the NAVD 88
 HV0533.geopotential number by the normal gravity value computed on the
 HV0533.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0533.degrees latitude (g = 980.6199 gals.).
 HV0533
 HV0533.The modeled gravity was interpolated from observed gravity values.
 HV0533
 HV0533;                    North         East    Units  Estimated Accuracy
 HV0533;SPC MD       -    77,630.      418,980.      MT  (+/- 180 meters Scaled)
 HV0533
 HV0533_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH442479(NAD 83)
 HV0533
 HV0533                          SUPERSEDED SURVEY CONTROL
 HV0533
 HV0533  NGVD 29 (11/26/84)    5.425  (m)           17.80   (f) ADJUSTED    1 2
 HV0533
 HV0533.Superseded values are not recommended for survey control.
 HV0533
 HV0533.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0533.See file dsdata.pdf to determine how the superseded data were derived.
 HV0533
 HV0533_MARKER: DB = BENCH MARK DISK
 HV0533_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0533_STAMPING: D 128 1971
 HV0533_MARK LOGO: CGS
 HV0533_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0533
 HV0533  HISTORY     - Date     Condition        Report By
 HV0533  HISTORY     - 1971     MONUMENTED       NGS
 HV0533
 HV0533                          STATION DESCRIPTION
 HV0533
 HV0533'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0533'AT CHAPTICO.
 HV0533'AT CHAPTICO, ABOUT 0.15 MILE SOUTH OF THE POST OFFICE AT
 HV0533'CHAPTICO, AT THE OLD CHRIST CHURCH AND CEMETERY, BETWEEN THE
 HV0533'CEMETERY FENCE AND A POWER LINE POLE WITH TRANSFORMER, ABOUT
 HV0533'150 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE CHURCH, 51.5
 HV0533'FEET NORTH OF THE SOUTHEAST CORNER OF THE STEEL FENCE AROUND THE
 HV0533'CEMETERY, 17 FEET WEST OF THE CENTER LINE OF A ROAD, 1.8 FEET
 HV0533'WEST OF A POWER LINE POLE, 1.4 FEET EAST OF THE FENCE, 4 FEET
 HV0533'NORTH OF A METAL WITNESS POST, 1 FOOT ABOVE THE LEVEL OF THE
 HV0533'ROAD AND IS A DISK ON THE TOP OF A COPPER COATED STEEL ROD
 HV0533'FLUSH WITH THE GROUND.  THE ROD WAS DRIVEN TO A DEPTH OF 40 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0610 ***********************************************************************
 HV0610  DESIGNATION -  D 129
 HV0610  PID         -  HV0610
 HV0610  STATE/COUNTY-  MD/CHARLES
 HV0610  COUNTRY     -  US
 HV0610  USGS QUAD   -  POPES CREEK (2016)
 HV0610
 HV0610                         *CURRENT SURVEY CONTROL
 HV0610  ______________________________________________________________________
 HV0610* NAD 83(1986) POSITION- 38 25 09.     (N) 076 57 42.     (W)   SCALED
 HV0610* NAVD 88 ORTHO HEIGHT -    43.815 (meters)      143.75  (feet) ADJUSTED
 HV0610  ______________________________________________________________________
 HV0610  GEOID HEIGHT    -        -33.358 (meters)                     GEOID18
 HV0610  DYNAMIC HEIGHT  -         43.788 (meters)      143.66  (feet) COMP
 HV0610  MODELED GRAVITY -    980,008.5   (mgal)                       NAVD 88
 HV0610
 HV0610  VERT ORDER      -  FIRST     CLASS II
 HV0610
 HV0610.The horizontal coordinates were scaled from a map and have
 HV0610.an estimated accuracy of +/- 6 seconds.
 HV0610
 HV0610.The orthometric height was determined by differential leveling and
 HV0610.adjusted by the NATIONAL GEODETIC SURVEY
 HV0610.in June 1991.
 HV0610
 HV0610.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0610.GEOID18 height accuracy estimate available here.
 HV0610
 HV0610.Click photographs - Photos may exist for this station.
 HV0610
 HV0610.The dynamic height is computed by dividing the NAVD 88
 HV0610.geopotential number by the normal gravity value computed on the
 HV0610.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0610.degrees latitude (g = 980.6199 gals.).
 HV0610
 HV0610.The modeled gravity was interpolated from observed gravity values.
 HV0610
 HV0610;                    North         East    Units  Estimated Accuracy
 HV0610;SPC MD       -    83,530.      403,350.      MT  (+/- 180 meters Scaled)
 HV0610
 HV0610_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH287541(NAD 83)
 HV0610
 HV0610                          SUPERSEDED SURVEY CONTROL
 HV0610
 HV0610  NGVD 29 (11/26/84)   44.057  (m)          144.54   (f) ADJUSTED    1 2
 HV0610
 HV0610.Superseded values are not recommended for survey control.
 HV0610
 HV0610.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0610.See file dsdata.pdf to determine how the superseded data were derived.
 HV0610
 HV0610_MARKER: DB = BENCH MARK DISK
 HV0610_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0610+WITH SETTING: INTO GROUND
 HV0610_STAMPING: D 129 1971
 HV0610_MARK LOGO: CGS
 HV0610_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0610+STABILITY: SURFACE MOTION
 HV0610
 HV0610  HISTORY     - Date     Condition        Report By
 HV0610  HISTORY     - 1971     MONUMENTED       NGS
 HV0610
 HV0610                          STATION DESCRIPTION
 HV0610
 HV0610'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0610'1.8 MI SE FROM FAULKNER.
 HV0610'ABOUT 1.75 MILES SOUTHEAST ALONG U.S. HIGHWAY 301 FROM THE
 HV0610'INTERSECTION OF STATE HIGHWAY 429 AT FAULKNER, 0.05 MILE
 HV0610'SOUTHEAST OF THE CENTER OF THE JUNCTION OF THE HIGHWAY AND A
 HV0610'BLACK TOP ROAD LEAING SOUTHWEST, NEAR THE 2 ND POWER LINE POLE
 HV0610'SOUTHEAST OF THE JUNCTION, 38 FEET SOUTHWEST OF THE CENTER LINE
 HV0610'OF THE SOUTHBOUND LANE OF THE HIGHWAY, 3 1/2 FEET SOUTHEAST OF
 HV0610'A POWER LINE POLE, 18 FEET NORTH OF A 24 INCH OAK TREE, 2 FEET
 HV0610'NORTH OF A METAL WITNESS POST, AND IS A DISK ON THE TOP OF A 4
 HV0610'FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE
 HV0610'PLATE.  THE DISK PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND
 HV0610'AND ENCASED IN A 4 INCH PIPE THAT PROJECTS 2 INCHES ABOVE THE
 HV0610'LEVEL OF THE GROUND.  NOTE-- MARK IS ABOUT 3 FEET ABOVE THE
 HV0610'LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1846 ***********************************************************************
 JV1846  DESIGNATION -  D 13 RESET
 JV1846  PID         -  JV1846
 JV1846  STATE/COUNTY-  MD/CARROLL
 JV1846  COUNTRY     -  US
 JV1846  USGS QUAD   -  NEW WINDSOR (2016)
 JV1846
 JV1846                         *CURRENT SURVEY CONTROL
 JV1846  ______________________________________________________________________
 JV1846* NAD 83(1986) POSITION- 39 32 39.2    (N) 077 06 47.7    (W)   HD_HELD2
 JV1846* NAVD 88 ORTHO HEIGHT -   133.773 (meters)      438.89  (feet) ADJUSTED
 JV1846  ______________________________________________________________________
 JV1846  GEOID HEIGHT    -        -32.390 (meters)                     GEOID18
 JV1846  DYNAMIC HEIGHT  -        133.704 (meters)      438.66  (feet) COMP
 JV1846  MODELED GRAVITY -    980,102.6   (mgal)                       NAVD 88
 JV1846
 JV1846  VERT ORDER      -  SECOND    CLASS II
 JV1846
 JV1846.The horizontal coordinates were established by autonomous hand held GPS
 JV1846.observations and have an estimated accuracy of +/- 10 meters.
 JV1846
 JV1846.The orthometric height was determined by differential leveling and
 JV1846.adjusted by the NATIONAL GEODETIC SURVEY
 JV1846.in June 2012.
 JV1846
 JV1846.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1846.GEOID18 height accuracy estimate available here.
 JV1846
 JV1846.Click photographs - Photos may exist for this station.
 JV1846
 JV1846.The dynamic height is computed by dividing the NAVD 88
 JV1846.geopotential number by the normal gravity value computed on the
 JV1846.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1846.degrees latitude (g = 980.6199 gals.).
 JV1846
 JV1846.The modeled gravity was interpolated from observed gravity values.
 JV1846
 JV1846;                    North         East    Units  Estimated Accuracy
 JV1846;SPC MD       -   208,431.      390,265.      MT  (+/- 10 meters HH2 GPS)
 JV1846
 JV1846_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1841279304(NAD 83)
 JV1846
 JV1846                          SUPERSEDED SURVEY CONTROL
 JV1846
 JV1846  NGVD 29 (??/??/??)  133.96   (m)          439.5    (f) RESET       3  
 JV1846
 JV1846.Superseded values are not recommended for survey control.
 JV1846
 JV1846.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1846.See file dsdata.pdf to determine how the superseded data were derived.
 JV1846
 JV1846_MARKER: DB = BENCH MARK DISK
 JV1846_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1846_SP_SET: BRIDGE SEAT
 JV1846_STAMPING: D 13 1935
 JV1846_MARK LOGO: CGS
 JV1846_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1846_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1846+SATELLITE: SATELLITE OBSERVATIONS - January 23, 2008
 JV1846
 JV1846  HISTORY     - Date     Condition        Report By
 JV1846  HISTORY     - 1958     MONUMENTED       MDSRC
 JV1846  HISTORY     - 20070406 GOOD             MDSHA
 JV1846  HISTORY     - 20080123 GOOD             MDSHA
 JV1846
 JV1846                          STATION DESCRIPTION
 JV1846
 JV1846'DESCRIBED BY MD STATE ROADS COMM 1958
 JV1846'0.3 MI W FROM NEW WINDSOR.
 JV1846'ABOUT 0.3 MILE WEST ALONG THE WESTERN MARYLAND RAILWAY FROM
 JV1846'THE STATION AT NEW WINDSOR, ABOUT 70 FEET EAST OF BLOCK
 JV1846'SIGNAL A 414, SET IN THE TOP OF THE EAST END OF THE NORTH
 JV1846'BRIDGE SEAT OF A RAILROAD BRIDGE, 10 FEET NORTH OF THE CENTER LINE
 JV1846'OF THE TRACK AND ABOUT 2 FEET LOWER THAN THE TRACK.
 JV1846
 JV1846                          STATION RECOVERY (2007)
 JV1846
 JV1846'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 JV1846'RECOVERED AS DESCRIBED, EXCEPT THE RAILWAY STATION AT NEW WINDSOR NO
 JV1846'LONGER EXISTS. USE THE INTERSECTION OF THE RAILROAD AND OLD NEW
 JV1846'WINDSOR ROAD FOR A STARTING POINT AND THE MARK IS IN THE FIRST BRIDGE
 JV1846'WEST OF SAID INTERSECTION.
 JV1846
 JV1846                          STATION RECOVERY (2008)
 JV1846
 JV1846'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV1846'RECOVERED IN GOOD CONDITION.
 JV1846'
 JV1846'NOTE-THE TRAIN STATION HAS BEEN REMOVED, THE MARK IS 491 PACES
 JV1846'NORTH-NORTHWEST OF THE RAILROAD CROSSING AT OLD NEW WINDSOR ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0537 ***********************************************************************
 JV0537  DESIGNATION -  D 130
 JV0537  PID         -  JV0537
 JV0537  STATE/COUNTY-  MD/QUEEN ANNES
 JV0537  COUNTRY     -  US
 JV0537  USGS QUAD   -  LOVE POINT (2017)
 JV0537
 JV0537                         *CURRENT SURVEY CONTROL
 JV0537  ______________________________________________________________________
 JV0537* NAD 83(1986) POSITION- 39 01 09.     (N) 076 18 41.     (W)   SCALED
 JV0537* NAVD 88 ORTHO HEIGHT -     3.959 (meters)       12.99  (feet) ADJUSTED
 JV0537  ______________________________________________________________________
 JV0537  GEOID HEIGHT    -        -33.510 (meters)                     GEOID18
 JV0537  DYNAMIC HEIGHT  -          3.956 (meters)       12.98  (feet) COMP
 JV0537  MODELED GRAVITY -    980,088.7   (mgal)                       NAVD 88
 JV0537
 JV0537  VERT ORDER      -  FIRST     CLASS II
 JV0537
 JV0537.The horizontal coordinates were scaled from a map and have
 JV0537.an estimated accuracy of +/- 6 seconds.
 JV0537
 JV0537.The orthometric height was determined by differential leveling and
 JV0537.adjusted by the NATIONAL GEODETIC SURVEY
 JV0537.in June 1991.
 JV0537
 JV0537.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0537.GEOID18 height accuracy estimate available here.
 JV0537
 JV0537.Click photographs - Photos may exist for this station.
 JV0537
 JV0537.The dynamic height is computed by dividing the NAVD 88
 JV0537.geopotential number by the normal gravity value computed on the
 JV0537.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0537.degrees latitude (g = 980.6199 gals.).
 JV0537
 JV0537.The modeled gravity was interpolated from observed gravity values.
 JV0537
 JV0537;                    North         East    Units  Estimated Accuracy
 JV0537;SPC MD       -   150,360.      459,630.      MT  (+/- 180 meters Scaled)
 JV0537
 JV0537_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ864197(NAD 83)
 JV0537
 JV0537                          SUPERSEDED SURVEY CONTROL
 JV0537
 JV0537  NGVD 29 (11/26/84)    4.195  (m)           13.76   (f) ADJUSTED    1 2
 JV0537
 JV0537.Superseded values are not recommended for survey control.
 JV0537
 JV0537.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0537.See file dsdata.pdf to determine how the superseded data were derived.
 JV0537
 JV0537_STAMPING: D 130 1971
 JV0537_MARK LOGO: CGS
 JV0537_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0537+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2005
 JV0537
 JV0537  HISTORY     - Date     Condition        Report By
 JV0537  HISTORY     - 1971     MONUMENTED       NGS
 JV0537  HISTORY     - 19950712 GOOD             USPSQD
 JV0537  HISTORY     - 19991231 POOR             USPSQD
 JV0537  HISTORY     - 20010331 POOR             NGS
 JV0537  HISTORY     - 20030309 POOR             USPSQD
 JV0537  HISTORY     - 20031113 GOOD             URS
 JV0537  HISTORY     - 20051122 GOOD             NGS
 JV0537  HISTORY     - 20210208 MARK NOT FOUND   MDSHA
 JV0537
 JV0537                          STATION DESCRIPTION
 JV0537
 JV0537'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0537'2.3 MI N FROM STEVENSVILLE.
 JV0537'ABOUT 2.3 MILES NORTH ALONG STATE HIGHWAY 18 FROM THE POST OFFICE
 JV0537'AT STEVENSVILLE, AT LOVE POINT, 0.85 MILE SOUTH OF THE JUNCTION OF
 JV0537'THE HIGHWAY AND PIER AVENUE, 179 FEET SOUTH OF THE SOUTHEAST
 JV0537'CORNER OF THE SOUTH BRICK GATE POST FOR A ROAD LEADING WEST TO
 JV0537'A FARM HOUSE, 21.6 FEET WEST OF THE CENTER LINE OF THE HIGHWAY,
 JV0537'3 1/2 FEET SOUTH OF POWER LINE POLE NO. 129-92, 1.2 FEET NORTH OF
 JV0537'A METAL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, ON THE TOP OF
 JV0537'A 4-FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL
 JV0537'BASE PLATE.  THE DISK IS FLUSH WITH THE GROUND AND ENCASED IN A 4
 JV0537'INCH STEEL PIPE THAT PROJECTS 2 INCHES ABOVE THE LEVEL OF THE
 JV0537'GROUND.
 JV0537
 JV0537                          STATION RECOVERY (1995)
 JV0537
 JV0537'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0537'RECOVERED IN GOOD CONDITION.
 JV0537
 JV0537                          STATION RECOVERY (1999)
 JV0537
 JV0537'RECOVERY NOTE BY US POWER SQUADRON 1999 (JKW)
 JV0537'ABOUT 2.8 MI N ALONG HWY 18 FROM KENT ISLAND HERITAGE SOCIETY, (OLD
 JV0537'POST OFC, 0.9 M S OF JUNCTION OF HSY 18 AND PIER AVENUE, 179 FT S OF
 JV0537'THE SE CORNER OF S BRICK GATEPOST FOR A ROAD LEADING W TO A RENOVATED
 JV0537'FARMHOUSE.  21.6 FT W OF CENTERLINE OF HWY, 3.5 FT S OF POWER POLE
 JV0537'26784, 1.2 FT N OF METAL WITNESS POST.  PIPE IS RUSTING. DISK IS BENT.
 JV0537'
 JV0537
 JV0537                          STATION RECOVERY (2001)
 JV0537
 JV0537'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV0537'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV0537
 JV0537                          STATION RECOVERY (2003)
 JV0537
 JV0537'RECOVERY NOTE BY US POWER SQUADRON 2003 (JC)
 JV0537'DISK BENT BUT READABLE.
 JV0537
 JV0537                          STATION RECOVERY (2003)
 JV0537
 JV0537'RECOVERY NOTE BY URS COMPANY 2003
 JV0537'RECOVERED IN GOOD CONDITION.
 JV0537
 JV0537                          STATION RECOVERY (2005)
 JV0537
 JV0537'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (JRO)
 JV0537'THE MARK IS ON STATE HIGHWAY R.O.W, 3.05 MILES NE AND THEN NORTH ALONG
 JV0537'SR 8 AND THEN SR  18 FROM EXIT 37 OF US ROUTE 50 (FIRST EXIT EAST OF
 JV0537'EAST END OF CHESAPEAKE BAY BRIDGE), OR 2.7  MILES NE AND THEN NORTH
 JV0537'ALONG SR 18 FROM THE STOPLIGHT AT T-JUNCTION OF SR 8 AND SR 18 IN
 JV0537'STEVENSVILLE, ALSO 0.9 MILE SOUTH OF PIER AVENUE AND THE AREA OF BENCH
 JV0537'MARK E 130.
 JV0537'
 JV0537'IT IS 184.5 FT SOUTH OF MYLANDER RD, 179 FT S OF SE CORNER OF S BRICK
 JV0537'GATEPOST AT  MYLANDER RD, 21.6 FT WEST OF TWO-LANE HWY, 5 FT SOUTH OF
 JV0537'POLE NUMBER 128, 1.2 FT NORTH OF  METAL WITNESS POST, ABOUT LEVEL WITH
 JV0537'HWY. THE DISK HAS BEEN BENT DOWN ON TWO SIDES.
 JV0537
 JV0537                          STATION RECOVERY (2021)
 JV0537
 JV0537'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (MRA)
 JV0537'REPORT BY MALCOLM R. ARCHER-SHEE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0882 ***********************************************************************
 HV0882  DESIGNATION -  D 131
 HV0882  PID         -  HV0882
 HV0882  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0882  COUNTRY     -  US
 HV0882  USGS QUAD   -  UPPER MARLBORO (2016)
 HV0882
 HV0882                         *CURRENT SURVEY CONTROL
 HV0882  ______________________________________________________________________
 HV0882* NAD 83(1986) POSITION- 38 50 25.1    (N) 076 52 26.3    (W)   HD_HELD2
 HV0882* NAVD 88 ORTHO HEIGHT -    83.972 (meters)      275.50  (feet) ADJUSTED
 HV0882  ______________________________________________________________________
 HV0882  GEOID HEIGHT    -        -32.494 (meters)                     GEOID18
 HV0882  DYNAMIC HEIGHT  -         83.926 (meters)      275.35  (feet) COMP
 HV0882  MODELED GRAVITY -    980,071.2   (mgal)                       NAVD 88
 HV0882
 HV0882  VERT ORDER      -  FIRST     CLASS II
 HV0882
 HV0882.The horizontal coordinates were established by autonomous hand held GPS
 HV0882.observations and have an estimated accuracy of +/- 10 meters.
 HV0882
 HV0882.The orthometric height was determined by differential leveling and
 HV0882.adjusted by the NATIONAL GEODETIC SURVEY
 HV0882.in August 2020.
 HV0882
 HV0882.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0882.GEOID18 height accuracy estimate available here.
 HV0882
 HV0882.Click photographs - Photos may exist for this station.
 HV0882
 HV0882.The dynamic height is computed by dividing the NAVD 88
 HV0882.geopotential number by the normal gravity value computed on the
 HV0882.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0882.degrees latitude (g = 980.6199 gals.).
 HV0882
 HV0882.The modeled gravity was interpolated from observed gravity values.
 HV0882
 HV0882;                    North         East    Units  Estimated Accuracy
 HV0882;SPC MD       -   130,286.      410,941.      MT  (+/- 10 meters HH2 GPS)
 HV0882
 HV0882_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3735900723(NAD 83)
 HV0882
 HV0882                          SUPERSEDED SURVEY CONTROL
 HV0882
 HV0882  NAVD 88 (06/15/91)   83.976  (m)          275.51   (f) SUPERSEDED  1 1
 HV0882  NGVD 29 (11/26/84)   84.214  (m)          276.29   (f) ADJUSTED    1 1
 HV0882
 HV0882.Superseded values are not recommended for survey control.
 HV0882
 HV0882.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0882.See file dsdata.pdf to determine how the superseded data were derived.
 HV0882
 HV0882_MARKER: DB = BENCH MARK DISK
 HV0882_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0882_STAMPING: D 131 1971
 HV0882_MARK LOGO: CGS
 HV0882_PROJECTION: RECESSED 5 CENTIMETERS
 HV0882_MAGNETIC: I = MARKER IS A STEEL ROD
 HV0882_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0882_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0882+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2019
 HV0882_ROD/PIPE-DEPTH: 22.6 meters
 HV0882
 HV0882  HISTORY     - Date     Condition        Report By
 HV0882  HISTORY     - 1971     MONUMENTED       NGS
 HV0882  HISTORY     - 19901015 GOOD             NGS
 HV0882  HISTORY     - 20191028 GOOD             MDSHA
 HV0882
 HV0882                          STATION DESCRIPTION
 HV0882
 HV0882'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0882'AT FORESTVILLE.
 HV0882'AT FORESTVILLE, ABOUT 90 YARDS SOUTH OF THE CENTER OF THE
 HV0882'INTERSECTION OF STATE HIGHWAY 4 AND FORESTVILLE ROAD, 210 FEET
 HV0882'SOUTHWEST OF THE CENTER LINE OF THE SOUTHWEST LANES OF THE
 HV0882'HIGHWAY, 133 FEET SOUTHEAST OF THE CENTER LINE OF THE ROAD,
 HV0882'41.3 FEET WEST OF THE WEST CORNER OF MARYLAND STATE POLICE
 HV0882'BARRACK L, 0.8 FOOT EAST OF THE SOUTH CORNER OF THE SOUTHWEST END
 HV0882'OF A WALKWAY, 0.5 FOOT SOUTHEAST OF THE SOUTHEAST EDGE OF THE
 HV0882'WALKWAY, ABOUT LEVEL WITH THE HIGHWAY, ABOUT 2 INCHES BELOW THE
 HV0882'LEVEL OF THE WALKWAY, AND ON THE TOP OF A COPPER COATED ROD
 HV0882'WHICH IS 1 INCH BELOW THE SURFACE OF THE GROUND AND IS PROTECTED
 HV0882'BY A 6-INCH METAL PIPE THAT IS LEVEL WITH THE GROUND.  THE ROD
 HV0882'WAS DRIVEN TO REFUSAL AT A DEPTH OF 74 FEET.
 HV0882
 HV0882                          STATION RECOVERY (1990)
 HV0882
 HV0882'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV0882'IN FORESTVILLE, AT THE INTERSECTION OF STATE HIGHWAY 4 AND FORESTVILLE
 HV0882'ROAD, 64.0 M (210.0 FT) SOUTHWEST OF AND LEVEL WITH THE CENTERLINE OF
 HV0882'THE EASTBOUND LANE OF THE HIGHWAY, 40.5 M (132.9 FT) SOUTHEAST OF THE
 HV0882'ROAD CENTERLINE, 12.6 M (41.3 FT) WEST OF THE WEST CORNER OF THE
 HV0882'MARYLAND STATE POLICE BARRACK L, 0.3 M (1.0 FT) EAST OF THE SOUTH
 HV0882'CORNER OF THE SOUTHWEST END OF A SIDEWALK, AND 0.2 M (0.7 FT)
 HV0882'SOUTHEAST OF THE SOUTHEAST EDGE OF A SIDEWALK.  NOTE--THE ROD IS
 HV0882'ENCASED IN A 6-INCH IRON PIPE THAT IS 0.05 M (0.16 FT) BELOW THE
 HV0882'GROUND SURFACE.
 HV0882
 HV0882                          STATION RECOVERY (2019)
 HV0882
 HV0882'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 HV0882'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1599 ***********************************************************************
 HV1599  DESIGNATION -  D 132
 HV1599  PID         -  HV1599
 HV1599  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1599  COUNTRY     -  US
 HV1599  USGS QUAD   -  DEALE (2016)
 HV1599
 HV1599                         *CURRENT SURVEY CONTROL
 HV1599  ______________________________________________________________________
 HV1599* NAD 83(1986) POSITION- 38 48 53.1    (N) 076 36 14.6    (W)   HD_HELD2
 HV1599* NAVD 88 ORTHO HEIGHT -    47.552 (meters)      156.01  (feet) ADJUSTED
 HV1599  ______________________________________________________________________
 HV1599  GEOID HEIGHT    -        -33.347 (meters)                     GEOID18
 HV1599  DYNAMIC HEIGHT  -         47.524 (meters)      155.92  (feet) COMP
 HV1599  MODELED GRAVITY -    980,055.2   (mgal)                       NAVD 88
 HV1599
 HV1599  VERT ORDER      -  FIRST     CLASS II
 HV1599
 HV1599.The horizontal coordinates were established by autonomous hand held GPS
 HV1599.observations and have an estimated accuracy of +/- 10 meters.
 HV1599
 HV1599.The orthometric height was determined by differential leveling and
 HV1599.adjusted by the NATIONAL GEODETIC SURVEY
 HV1599.in June 1991.
 HV1599
 HV1599.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1599.GEOID18 height accuracy estimate available here.
 HV1599
 HV1599.Click photographs - Photos may exist for this station.
 HV1599
 HV1599.The dynamic height is computed by dividing the NAVD 88
 HV1599.geopotential number by the normal gravity value computed on the
 HV1599.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1599.degrees latitude (g = 980.6199 gals.).
 HV1599
 HV1599.The modeled gravity was interpolated from observed gravity values.
 HV1599
 HV1599;                    North         East    Units  Estimated Accuracy
 HV1599;SPC MD       -   127,517.      434,387.      MT  (+/- 10 meters HH2 GPS)
 HV1599
 HV1599_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6073697441(NAD 83)
 HV1599
 HV1599                          SUPERSEDED SURVEY CONTROL
 HV1599
 HV1599  NGVD 29 (11/26/84)   47.790  (m)          156.79   (f) ADJUSTED    1 2
 HV1599
 HV1599.Superseded values are not recommended for survey control.
 HV1599
 HV1599.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1599.See file dsdata.pdf to determine how the superseded data were derived.
 HV1599
 HV1599_MARKER: DB = BENCH MARK DISK
 HV1599_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV1599+WITH SETTING: INTO GROUND
 HV1599_STAMPING: D 132 1971
 HV1599_MARK LOGO: CGS
 HV1599_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1599+STABILITY: SURFACE MOTION
 HV1599_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1599+SATELLITE: SATELLITE OBSERVATIONS - November 13, 2004
 HV1599
 HV1599  HISTORY     - Date     Condition        Report By
 HV1599  HISTORY     - 1971     MONUMENTED       NGS
 HV1599  HISTORY     - 1972     GOOD             NGS
 HV1599  HISTORY     - 20041113 GOOD             USPSQD
 HV1599
 HV1599                          STATION DESCRIPTION
 HV1599
 HV1599'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1599'1.4 MI SE FROM LOTHIAN.
 HV1599'ABOUT 0.2 MILE SOUTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV1599'POST OFFICE AT LOTHIAN, THENCE 1.25 MILES SOUTHEAST ALONG STATE
 HV1599'HIGHWAY 2, ABOUT 1.8 MILE NORTH OF THE ST JAMES CHURCH AND
 HV1599'CEMETERY, 36 FEET EAST OF THE CENTER LINE OF STATE HIGHWAY 2,
 HV1599'25 1/2 FEET NORTH OF A FENCE CORNER AT THE WEST SIDE OF A GATE, 3
 HV1599'FEET NORTHEAST OF POWER LINE POLE 334156, 0.7 FOOT WEST OF A
 HV1599'FENCE LINE, 1 FOOT SOUTH OF A METAL WITNESS POST, 2 FEET ABOVE
 HV1599'THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4 FOOT COPPER
 HV1599'COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK
 HV1599'IS FLUSH WITH THE LEVEL OF THE GROUND AND ENCASED IN A 6 INCH PIPE
 HV1599'THAT PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.
 HV1599
 HV1599                          STATION RECOVERY (2004)
 HV1599
 HV1599'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1599'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0949 ***********************************************************************
 HV0949  DESIGNATION -  D 133
 HV0949  PID         -  HV0949
 HV0949  STATE/COUNTY-  MD/CALVERT
 HV0949  COUNTRY     -  US
 HV0949  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0949
 HV0949                         *CURRENT SURVEY CONTROL
 HV0949  ______________________________________________________________________
 HV0949* NAD 83(1986) POSITION- 38 31 44.     (N) 076 34 35.     (W)   SCALED
 HV0949* NAVD 88 ORTHO HEIGHT -    44.776 (meters)      146.90  (feet) ADJUSTED
 HV0949  ______________________________________________________________________
 HV0949  GEOID HEIGHT    -        -33.893 (meters)                     GEOID18
 HV0949  DYNAMIC HEIGHT  -         44.748 (meters)      146.81  (feet) COMP
 HV0949  MODELED GRAVITY -    980,026.5   (mgal)                       NAVD 88
 HV0949
 HV0949  VERT ORDER      -  FIRST     CLASS II
 HV0949
 HV0949.The horizontal coordinates were scaled from a map and have
 HV0949.an estimated accuracy of +/- 6 seconds.
 HV0949
 HV0949.The orthometric height was determined by differential leveling and
 HV0949.adjusted by the NATIONAL GEODETIC SURVEY
 HV0949.in June 1991.
 HV0949
 HV0949.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0949.GEOID18 height accuracy estimate available here.
 HV0949
 HV0949.Click photographs - Photos may exist for this station.
 HV0949
 HV0949.The dynamic height is computed by dividing the NAVD 88
 HV0949.geopotential number by the normal gravity value computed on the
 HV0949.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0949.degrees latitude (g = 980.6199 gals.).
 HV0949
 HV0949.The modeled gravity was interpolated from observed gravity values.
 HV0949
 HV0949;                    North         East    Units  Estimated Accuracy
 HV0949;SPC MD       -    95,800.      436,940.      MT  (+/- 180 meters Scaled)
 HV0949
 HV0949_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH625656(NAD 83)
 HV0949
 HV0949                          SUPERSEDED SURVEY CONTROL
 HV0949
 HV0949  NGVD 29 (11/26/84)   45.020  (m)          147.70   (f) ADJUSTED    1 2
 HV0949
 HV0949.Superseded values are not recommended for survey control.
 HV0949
 HV0949.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0949.See file dsdata.pdf to determine how the superseded data were derived.
 HV0949
 HV0949_MARKER: DB = BENCH MARK DISK
 HV0949_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0949+WITH SETTING: INTO GROUND
 HV0949_STAMPING: D 133 1971
 HV0949_MARK LOGO: CGS
 HV0949_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0949+STABILITY: SURFACE MOTION
 HV0949
 HV0949  HISTORY     - Date     Condition        Report By
 HV0949  HISTORY     - 1971     MONUMENTED       NGS
 HV0949  HISTORY     - 1972     GOOD             NGS
 HV0949  HISTORY     - 19950625 GOOD             USPSQD
 HV0949  HISTORY     - 20081107 POOR             MDSHA
 HV0949
 HV0949                          STATION DESCRIPTION
 HV0949
 HV0949'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV0949'0.9 MI SE FROM PRINCE FREDERICK.
 HV0949'ABOUT 0.9 MILE SOUTHEAST ALONG STATE HIGHWAY 765 FROM THE
 HV0949'COURTHOUSE AT PRINCE FREDERICK, 0.7 MILE NORTH OF THE JUNCTION OF
 HV0949'STATE HIGHWAY 2 AND 4, ON THE TOP  OF A SMALL HILL, 183 FEET
 HV0949'SOUTH OF THE CENTER LINE OF A DRIVEWAY TO A 2-STORY HOUSE, 21.3
 HV0949'FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 51.8 FEET NORTHWEST
 HV0949'OF AND ACROSS THE HIGHWAY FROM CABLE LINE POLE NO. 32, 3 FEET
 HV0949'NORTH OF POWER LINE POLE NO. 3031, 1.3 FEET SOUTH OF A METAL
 HV0949'WITNESS POST, 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY, ON THE TOP
 HV0949'OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL
 HV0949'BASE PLATE.  THE DISK IS LEVEL WITH THE SURFACE OF THE GROUND AND
 HV0949'ENCASED IN A 6 INCH METAL PIPE THAT PROJECTS 1 INCH ABOVE THE
 HV0949'LEVEL OF THE GROUND.
 HV0949
 HV0949                          STATION RECOVERY (1995)
 HV0949
 HV0949'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0949'RECOVERED IN GOOD CONDITION.
 HV0949
 HV0949                          STATION RECOVERY (2008)
 HV0949
 HV0949'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (REH)
 HV0949'THE 6 INCH STEEL CASING IS INTACT, HOWEVER THE MARK IS DESTROYED. THE
 HV0949'ROD IS BENT WITH THE DISK REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7793 ***********************************************************************
 HV7793  DESIGNATION -  D 136
 HV7793  PID         -  HV7793
 HV7793  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7793  COUNTRY     -  US
 HV7793  USGS QUAD   -  BRISTOL (2016)
 HV7793
 HV7793                         *CURRENT SURVEY CONTROL
 HV7793  ______________________________________________________________________
 HV7793* NAD 83(1986) POSITION- 38 51 40.     (N) 076 43 27.     (W)   SCALED
 HV7793* NAVD 88 ORTHO HEIGHT -    41.664 (meters)      136.69  (feet) ADJUSTED
 HV7793  ______________________________________________________________________
 HV7793  GEOID HEIGHT    -        -32.912 (meters)                     GEOID18
 HV7793  DYNAMIC HEIGHT  -         41.641 (meters)      136.62  (feet) COMP
 HV7793  MODELED GRAVITY -    980,071.5   (mgal)                       NAVD 88
 HV7793
 HV7793  VERT ORDER      -  FIRST     CLASS II
 HV7793
 HV7793.The horizontal coordinates were scaled from a map and have
 HV7793.an estimated accuracy of +/- 6 seconds.
 HV7793
 HV7793.The orthometric height was determined by differential leveling and
 HV7793.adjusted by the NATIONAL GEODETIC SURVEY
 HV7793.in June 1991.
 HV7793
 HV7793.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7793.GEOID18 height accuracy estimate available here.
 HV7793
 HV7793.Click photographs - Photos may exist for this station.
 HV7793
 HV7793.The dynamic height is computed by dividing the NAVD 88
 HV7793.geopotential number by the normal gravity value computed on the
 HV7793.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7793.degrees latitude (g = 980.6199 gals.).
 HV7793
 HV7793.The modeled gravity was interpolated from observed gravity values.
 HV7793
 HV7793;                    North         East    Units  Estimated Accuracy
 HV7793;SPC MD       -   132,630.      423,940.      MT  (+/- 180 meters Scaled)
 HV7793
 HV7793_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ504027(NAD 83)
 HV7793
 HV7793                          SUPERSEDED SURVEY CONTROL
 HV7793
 HV7793  NGVD 29 (11/26/84)   41.898  (m)          137.46   (f) ADJUSTED    1 2
 HV7793
 HV7793.Superseded values are not recommended for survey control.
 HV7793
 HV7793.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7793.See file dsdata.pdf to determine how the superseded data were derived.
 HV7793
 HV7793_MARKER: DV = VERTICAL CONTROL DISK
 HV7793_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV7793_STAMPING: D 136 1975
 HV7793_MARK LOGO: NGS
 HV7793_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7793
 HV7793  HISTORY     - Date     Condition        Report By
 HV7793  HISTORY     - 1975     MONUMENTED       NGS
 HV7793  HISTORY     - 20080710 GOOD             MDSHA
 HV7793
 HV7793                          STATION DESCRIPTION
 HV7793
 HV7793'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7793'2.65 MI NORTH FROM UPPER MARLBORO.
 HV7793'2.65 MILES NORTH ALONG U.S. HIGHWAY 301 FROM THE JUNCTION OF STATE
 HV7793'HIGHWAY 408 AND U.S. HIGHWAY 301 AT UPPER MARLBORO. SET BETWEEN TWO
 HV7793'TRANSFORMER POLES. 53.5 FEET SOUTHWEST OF THE CENTERLINE OF THE
 HV7793'NORTHBOUND LANE OF U.S. HIGHWAY 301. 17.3 FEET NORTHWEST OF A BARBED
 HV7793'WIRE FENCE. 6.7 FEET WEST OF POWER POLE NO 494749(WITH TRANSFORMERS)
 HV7793'6.6 FEET NORTH OF POWER POLE NO 337027 (WITH TRANSFORMERS). 0.1 MILE
 HV7793'NORTH OF HIGHWAY MILE POST NO 44.
 HV7793
 HV7793                          STATION RECOVERY (2008)
 HV7793
 HV7793'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 HV7793'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7789 ***********************************************************************
 HV7789  DESIGNATION -  D 137
 HV7789  PID         -  HV7789
 HV7789  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7789  COUNTRY     -  US
 HV7789  USGS QUAD   -  BRISTOL (2016)
 HV7789
 HV7789                         *CURRENT SURVEY CONTROL
 HV7789  ______________________________________________________________________
 HV7789* NAD 83(1986) POSITION- 38 48 17.     (N) 076 44 55.     (W)   SCALED
 HV7789* NAVD 88 ORTHO HEIGHT -    25.886 (meters)       84.93  (feet) ADJUSTED
 HV7789  ______________________________________________________________________
 HV7789  GEOID HEIGHT    -        -32.953 (meters)                     GEOID18
 HV7789  DYNAMIC HEIGHT  -         25.872 (meters)       84.88  (feet) COMP
 HV7789  MODELED GRAVITY -    980,065.2   (mgal)                       NAVD 88
 HV7789
 HV7789  VERT ORDER      -  FIRST     CLASS II
 HV7789
 HV7789.The horizontal coordinates were scaled from a map and have
 HV7789.an estimated accuracy of +/- 6 seconds.
 HV7789
 HV7789.The orthometric height was determined by differential leveling and
 HV7789.adjusted by the NATIONAL GEODETIC SURVEY
 HV7789.in June 1991.
 HV7789
 HV7789.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7789.GEOID18 height accuracy estimate available here.
 HV7789
 HV7789.Click photographs - Photos may exist for this station.
 HV7789
 HV7789.The dynamic height is computed by dividing the NAVD 88
 HV7789.geopotential number by the normal gravity value computed on the
 HV7789.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7789.degrees latitude (g = 980.6199 gals.).
 HV7789
 HV7789.The modeled gravity was interpolated from observed gravity values.
 HV7789
 HV7789;                    North         East    Units  Estimated Accuracy
 HV7789;SPC MD       -   126,360.      421,840.      MT  (+/- 180 meters Scaled)
 HV7789
 HV7789_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH481965(NAD 83)
 HV7789
 HV7789                          SUPERSEDED SURVEY CONTROL
 HV7789
 HV7789  NGVD 29 (11/26/84)   26.121  (m)           85.70   (f) ADJUSTED    1 2
 HV7789
 HV7789.Superseded values are not recommended for survey control.
 HV7789
 HV7789.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7789.See file dsdata.pdf to determine how the superseded data were derived.
 HV7789
 HV7789_MARKER: DV = VERTICAL CONTROL DISK
 HV7789_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV7789+WITH SETTING: INTO GROUND
 HV7789_STAMPING: D 137 1975
 HV7789_MARK LOGO: NGS
 HV7789_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7789+STABILITY: SURFACE MOTION
 HV7789
 HV7789  HISTORY     - Date     Condition        Report By
 HV7789  HISTORY     - 1975     MONUMENTED       NGS
 HV7789
 HV7789                          STATION DESCRIPTION
 HV7789
 HV7789'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7789'0.8 MI SOUTH FROM UPPER MARLBORO.
 HV7789'0.8 MILE SOUTH ALONG U.S. HIGHWAY 301 FROM THE INTERSECTION OF U.S.
 HV7789'HIGHWAY 301 AND STATE HIGHWAY 4 AT UPPER MARLBORO. 33 FEET NORTHWEST
 HV7789'OF THE CENTERLINE OF THE SOUTHBOUND LANE OF THE HIGHWAY. 229 FEET EAST
 HV7789'OF POWER POLE NO 870352-3274. 136 FEET WEST OF CURTIS ROAD ROM THE
 HV7789'SOUTHERN CORNER OF CURTIS ROAD AND U.S. HIGHWAY 301. 49.5 FEET WEST OF
 HV7789'POWER POLE NO 871353-7696. 0.2 MILE NORTH OF XB 120 WHICH IS DESCRIBED
 HV7789'.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1189 ***********************************************************************
 JV1189  DESIGNATION -  D 14
 JV1189  PID         -  JV1189
 JV1189  STATE/COUNTY-  MD/BALTIMORE
 JV1189  COUNTRY     -  US
 JV1189  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1189
 JV1189                         *CURRENT SURVEY CONTROL
 JV1189  ______________________________________________________________________
 JV1189* NAD 83(1986) POSITION- 39 22 33.     (N) 076 39 03.     (W)   SCALED
 JV1189* NAVD 88 ORTHO HEIGHT -    66.112 (meters)      216.90  (feet) ADJUSTED
 JV1189  ______________________________________________________________________
 JV1189  GEOID HEIGHT    -        -32.489 (meters)                     GEOID18
 JV1189  DYNAMIC HEIGHT  -         66.077 (meters)      216.79  (feet) COMP
 JV1189  MODELED GRAVITY -    980,100.1   (mgal)                       NAVD 88
 JV1189
 JV1189  VERT ORDER      -  SECOND    CLASS 0
 JV1189
 JV1189.The horizontal coordinates were scaled from a map and have
 JV1189.an estimated accuracy of +/- 6 seconds.
 JV1189
 JV1189.The orthometric height was determined by differential leveling and
 JV1189.adjusted by the NATIONAL GEODETIC SURVEY
 JV1189.in June 1991.
 JV1189
 JV1189.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1189.GEOID18 height accuracy estimate available here.
 JV1189
 JV1189.Click photographs - Photos may exist for this station.
 JV1189
 JV1189.The dynamic height is computed by dividing the NAVD 88
 JV1189.geopotential number by the normal gravity value computed on the
 JV1189.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1189.degrees latitude (g = 980.6199 gals.).
 JV1189
 JV1189.The modeled gravity was interpolated from observed gravity values.
 JV1189
 JV1189;                    North         East    Units  Estimated Accuracy
 JV1189;SPC MD       -   189,790.      430,090.      MT  (+/- 180 meters Scaled)
 JV1189
 JV1189_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ578597(NAD 83)
 JV1189
 JV1189                          SUPERSEDED SURVEY CONTROL
 JV1189
 JV1189  NGVD 29 (11/26/84)   66.341  (m)          217.65   (f) ADJUSTED    2 0
 JV1189
 JV1189.Superseded values are not recommended for survey control.
 JV1189
 JV1189.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1189.See file dsdata.pdf to determine how the superseded data were derived.
 JV1189
 JV1189_MARKER: DB = BENCH MARK DISK
 JV1189_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1189_STAMPING: D 14 1935
 JV1189_MARK LOGO: CGS
 JV1189_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1189+STABILITY: SURFACE MOTION
 JV1189
 JV1189  HISTORY     - Date     Condition        Report By
 JV1189  HISTORY     - 1935     MONUMENTED       CGS
 JV1189  HISTORY     - 1942     GOOD             CGS
 JV1189
 JV1189                          STATION DESCRIPTION
 JV1189
 JV1189'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1189'0.6 MI N FROM MT WASHINGTON.
 JV1189'0.6 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 JV1189'AT MT. WASHINGTON, BALTIMORE COUNTY, 198 FEET SOUTHWEST OF THE
 JV1189'WAITING STATION AT BARE HILL, AT AN OVERPASS OF STATE HIGHWAY 25,
 JV1189'AND 33 FEET SOUTH OF THE CENTERLINE OF THE SOUTH TRACK.  A
 JV1189'STANDARD DISK, STAMPED D 14 1935 AND SET IN THE TOP OF A CONCRETE
 JV1189'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1025 ***********************************************************************
 HU1025  DESIGNATION -  D 141
 HU1025  PID         -  HU1025
 HU1025  STATE/COUNTY-  MD/WORCESTER
 HU1025  COUNTRY     -  US
 HU1025  USGS QUAD   -  WHITTINGTON POINT (2016)
 HU1025
 HU1025                         *CURRENT SURVEY CONTROL
 HU1025  ______________________________________________________________________
 HU1025* NAD 83(2011) POSITION- 38 04 12.92520(N) 075 12 48.27104(W)   ADJUSTED
 HU1025* NAD 83(2011) ELLIP HT-   -34.678 (meters)        (06/05/19)   ADJUSTED
 HU1025* NAD 83(2011) EPOCH   -  2010.00
 HU1025* NAVD 88 ORTHO HEIGHT -     1.747 (meters)        5.73  (feet) ADJUSTED
 HU1025  ______________________________________________________________________
 HU1025  GEOID HEIGHT    -        -36.373 (meters)                     GEOID18
 HU1025  NAD 83(2011) X  -  1,283,140.777 (meters)                     COMP
 HU1025  NAD 83(2011) Y  - -4,861,098.909 (meters)                     COMP
 HU1025  NAD 83(2011) Z  -  3,911,564.805 (meters)                     COMP
 HU1025  LAPLACE CORR    -          0.72  (seconds)                    DEFLEC18
 HU1025  DYNAMIC HEIGHT  -          1.746 (meters)        5.73  (feet) COMP
 HU1025  MODELED GRAVITY -    979,979.1   (mgal)                       NAVD 88
 HU1025
 HU1025  VERT ORDER      -  SECOND    CLASS I
 HU1025
 HU1025  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1025  Standards:
 HU1025         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1025            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1025  -------------------------------------------------------------------
 HU1025  NETWORK    1.04   0.88           0.50   0.29   0.45     -0.01092999
 HU1025  -------------------------------------------------------------------
 HU1025  Click here for local accuracies and other accuracy information.
 HU1025
 HU1025.The horizontal coordinates were established by GPS observations
 HU1025.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 HU1025
 HU1025.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1025.been affixed to the stable North American tectonic plate. See 
 HU1025.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1025
 HU1025.The horizontal coordinates are valid at the epoch date displayed above
 HU1025.which is a decimal equivalence of Year/Month/Day.
 HU1025
 HU1025.The orthometric height was determined by differential leveling and
 HU1025.adjusted by the NATIONAL GEODETIC SURVEY
 HU1025.in June 1991.
 HU1025
 HU1025.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1025.GEOID18 height accuracy estimate available here.
 HU1025
 HU1025.Click photographs - Photos may exist for this station.
 HU1025
 HU1025.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1025
 HU1025.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1025
 HU1025.The ellipsoidal height was determined by GPS observations
 HU1025.and is referenced to NAD 83.
 HU1025
 HU1025.The dynamic height is computed by dividing the NAVD 88
 HU1025.geopotential number by the normal gravity value computed on the
 HU1025.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1025.degrees latitude (g = 980.6199 gals.).
 HU1025
 HU1025.The modeled gravity was interpolated from observed gravity values.
 HU1025
 HU1025. The following values were computed from the NAD 83(2011) position.
 HU1025
 HU1025;                    North         East     Units Scale Factor Converg.
 HU1025;SPC MD       -    46,334.901   556,768.394   MT  1.00004790   +1 07 16.8
 HU1025;SPC MD       -   152,017.09  1,826,664.31   sFT  1.00004790   +1 07 16.8
 HU1025;UTM  18      - 4,213,631.723   481,281.172   MT  0.99960432   -0 07 53.7
 HU1025
 HU1025!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1025!SPC MD       -   1.00000544  x   1.00004790  =   1.00005334
 HU1025!UTM  18      -   1.00000544  x   0.99960432  =   0.99960976
 HU1025
 HU1025_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8128113631(NAD 83)
 HU1025
 HU1025                          SUPERSEDED SURVEY CONTROL
 HU1025
 HU1025  NGVD 29 (11/26/84)    1.989  (m)            6.53   (f) ADJUSTED    2 1
 HU1025
 HU1025.Superseded values are not recommended for survey control.
 HU1025
 HU1025.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1025.See file dsdata.pdf to determine how the superseded data were derived.
 HU1025
 HU1025_MARKER: DV = VERTICAL CONTROL DISK
 HU1025_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1025+WITH SETTING: INTO GROUND
 HU1025_STAMPING: D 141 1977
 HU1025_MARK LOGO: NGS
 HU1025_PROJECTION: PROJECTING 15 CENTIMETERS
 HU1025_MAGNETIC: I = MARKER IS A STEEL ROD
 HU1025_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1025+STABILITY: SURFACE MOTION
 HU1025_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1025+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 HU1025
 HU1025  HISTORY     - Date     Condition        Report By
 HU1025  HISTORY     - 1977     MONUMENTED       NGS
 HU1025  HISTORY     - 1989     GOOD             USPSQD
 HU1025  HISTORY     - 20130305 GOOD             ARCSHE
 HU1025  HISTORY     - 20150316 GOOD             NGS
 HU1025
 HU1025                          STATION DESCRIPTION
 HU1025
 HU1025'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1025'IN ASSATEAGUE ISLAND.
 HU1025'3.2 MILES NORTHEAST ALONG THE SERVICE ROAD FROM THE STATE LINE ON
 HU1025'ASSATEAGUE ISLAND, 34 FEET SOUTHEAST OF THE CENTERLINE OF THE ROAD,
 HU1025'8 FEET SOUTHWEST OF POWERLINE POLE 387.
 HU1025
 HU1025                          STATION RECOVERY (1989)
 HU1025
 HU1025'RECOVERY NOTE BY US POWER SQUADRON 1989 (FFS)
 HU1025'RECOVERED IN GOOD CONDITION.
 HU1025
 HU1025                          STATION RECOVERY (2013)
 HU1025
 HU1025'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU1025'THE MARK IS LOCATED ABOUT 10.8 MI (17.4 KM) EAST OF STOCKTON, 10.2 MI
 HU1025'(16.4 KM) EAST OF GIRDLETREE AND 8.0 MI (12.9 KM) EAST-SOUTHEAST OF
 HU1025'BOXIRON ON ASSATEAGUE ISLAND.  OWNERSHIP--U.S. GOVERNMENT.
 HU1025'
 HU1025'TO REACH FROM THE SOUTHEAST END OF THE VERRAZANO BRIDGE OVER
 HU1025'SINEPUXENT BAY, GO SOUTHEAST ON MD 611 FOR 0.62 MI (1.0 KM) TO A SIDE
 HU1025'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ON STEPHEN DECATUR
 HU1025'MEMORIAL ROAD FOR 2.27 MI (3.7 KM) TO A PARK RANGER BOOTH.  CONTINUE
 HU1025'SOUTHWEST ON STEPHEN DECATUR MEMORIAL ROAD FOR 1.22 MI (2.0 KM) TO A
 HU1025'TRAFFIC CIRCLE.  TAKE THE SECOND EXIT AND CONTINUE SOUTHWEST ON
 HU1025'BAYBERRY DRIVE FOR 0.19 MI (0.3 KM) TO THE END OF THE PAVEMENT.
 HU1025'ACTIVATE FOUR WHEEL DRIVE AND CONTINUE SOUTHWEST ON A SAND ROAD AND
 HU1025'ALONG THE BEACH FOR 8.77 MI (14.1 KM) AND PARK VEHICLE.  WALK
 HU1025'NORTHWEST FOR 600 FT (182.9 M) TO THE MARK.
 HU1025'
 HU1025'IT IS 70.8 FT (21.6 M) EAST-SOUTHEAST OF A 6-INCH (15 CM) PINE TREE,
 HU1025'36.0 FT (11.0 M) EAST-SOUTHEAST OF A TRACK ROAD AND 2.0 FT (0.6 M)
 HU1025'EAST OF A FIBERGLASS WITNESS POST.
 HU1025
 HU1025                          STATION RECOVERY (2015)
 HU1025
 HU1025'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2015 (NTW)
 HU1025'THE STATION IS LOCATED AT KM 30.1 IN THE OSV ZONE. FROM BAYBERRY
 HU1025'DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE
 HU1025'REQUIRED). DRIVE SOUTH ON THE BEACH 14.1 KM (8.8 MI), PARK VEHICLE,
 HU1025'AND WALK NORTHWEST FOR 182.9 M (600 FT). THE STATION IS 11 M (36.1 FT)
 HU1025'EAST OF THE CENTER-LINE OF AN OLD ROADBED, 60 CM (23.6 IN) EAST OF AN
 HU1025'ORANGE CARSONITE WITNESS POST, AND PROJECTS 20 CM (7.9 IN) FROM THE
 HU1025'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3871 ***********************************************************************
 JV3871  DESIGNATION -  D 143
 JV3871  PID         -  JV3871
 JV3871  STATE/COUNTY-  MD/FREDERICK
 JV3871  COUNTRY     -  US
 JV3871  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3871
 JV3871                         *CURRENT SURVEY CONTROL
 JV3871  ______________________________________________________________________
 JV3871* NAD 83(1986) POSITION- 39 17 12.     (N) 077 31 51.     (W)   SCALED
 JV3871* NAVD 88 ORTHO HEIGHT -   111.059 (meters)      364.37  (feet) ADJUSTED
 JV3871  ______________________________________________________________________
 JV3871  GEOID HEIGHT    -        -32.723 (meters)                     GEOID18
 JV3871  DYNAMIC HEIGHT  -        110.999 (meters)      364.17  (feet) COMP
 JV3871  MODELED GRAVITY -    980,083.1   (mgal)                       NAVD 88
 JV3871
 JV3871  VERT ORDER      -  FIRST     CLASS II
 JV3871
 JV3871.The horizontal coordinates were scaled from a map and have
 JV3871.an estimated accuracy of +/- 6 seconds.
 JV3871
 JV3871.The orthometric height was determined by differential leveling and
 JV3871.adjusted by the NATIONAL GEODETIC SURVEY
 JV3871.in June 1991.
 JV3871
 JV3871.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3871.GEOID18 height accuracy estimate available here.
 JV3871
 JV3871.Click photographs - Photos may exist for this station.
 JV3871
 JV3871.The dynamic height is computed by dividing the NAVD 88
 JV3871.geopotential number by the normal gravity value computed on the
 JV3871.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3871.degrees latitude (g = 980.6199 gals.).
 JV3871
 JV3871.The modeled gravity was interpolated from observed gravity values.
 JV3871
 JV3871;                    North         East    Units  Estimated Accuracy
 JV3871;SPC MD       -   179,960.      354,200.      MT  (+/- 180 meters Scaled)
 JV3871
 JV3871_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ817516(NAD 83)
 JV3871
 JV3871                          SUPERSEDED SURVEY CONTROL
 JV3871
 JV3871.No superseded survey control is available for this station.
 JV3871
 JV3871_MARKER: DV = VERTICAL CONTROL DISK
 JV3871_SETTING: 66 = SET IN ROCK OUTCROP
 JV3871_STAMPING: D 143 1979
 JV3871_MARK LOGO: NGS
 JV3871_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3871_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3871+STABILITY: POSITION/ELEVATION WELL
 JV3871_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3871+SATELLITE: SATELLITE OBSERVATIONS - March 23, 1995
 JV3871
 JV3871  HISTORY     - Date     Condition        Report By
 JV3871  HISTORY     - 1979     MONUMENTED       NGS
 JV3871  HISTORY     - 19950323 GOOD             NGS
 JV3871  HISTORY     - 20050611 GOOD             GEOCAC
 JV3871
 JV3871                          STATION DESCRIPTION
 JV3871
 JV3871'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3871'1.0 MI NE FROM POINT OF ROCKS.
 JV3871'1.0 MILE NORTHEAST ALONG STATE ROUTE 15 FROM THE JUNCTION OF STATE
 JV3871'ROUTE 28 IN POINT OF ROCKS TO THE INTERSECTION OF STATE ROUTE 464
 JV3871'AND THE MARK ON THE LEFT, SET IN THE NORTHWEST CORNER OF ROUTE 464
 JV3871'IN BEDROCK, 108 FEET NORTHWEST OF THE CENTERLINE OF ROUTE 15, 42
 JV3871'FEET NORTHWEST OF THE CENTER OF A CATCH BASIN, 28 FEET NORTHEAST OF
 JV3871'THE CENTERLILNE OF ROUTE 464.
 JV3871'THE MARK IS 1 FT  N FROM A WITNESS POST.
 JV3871'THE MARK IS 2 FT ABOVE HIGHWAY.
 JV3871
 JV3871                          STATION RECOVERY (1995)
 JV3871
 JV3871'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (GAS)
 JV3871'1.6 KM (1.00 MI) NORTHERLY ALONG U.S.  HIGHWAY 15 FROM THE JUNCTION OF
 JV3871'STATE HIGHWAY 28 IN POINT OF ROCKS, NEAR THE WEST EDGE OF A 2 BY
 JV3871'3-FOOT AREA OF OUTCROPPING BEDROCK, 32.9 M (107.9 FT) NORTHWEST OF THE
 JV3871'HIGHWAY CENTERLINE, 8.8 M (28.9 FT) NORTHEAST OF THE CENTERLINE OF
 JV3871'STATE HIGHWAY 464, 1.0 M (3.3 FT) ABOVE THE LEVEL OF THE STATE
 JV3871'HIGHWAY, AND 0.3 M (1.0 FT) NORTHWEST OF A WITNESS POST.
 JV3871
 JV3871                          STATION RECOVERY (2005)
 JV3871
 JV3871'RECOVERY NOTE BY GEOCACHING 2005 (LWB)
 JV3871'FOUND.  WITNESS POST IS LEANING OVER AT A 45 DEGREE ANGLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3937 ***********************************************************************
 JV3937  DESIGNATION -  D 146
 JV3937  PID         -  JV3937
 JV3937  STATE/COUNTY-  MD/WASHINGTON
 JV3937  COUNTRY     -  US
 JV3937  USGS QUAD   -  HARPERS FERRY (2016)
 JV3937
 JV3937                         *CURRENT SURVEY CONTROL
 JV3937  ______________________________________________________________________
 JV3937* NAD 83(1986) POSITION- 39 21 36.8    (N) 077 40 31.9    (W)   HD_HELD2
 JV3937* NAVD 88 ORTHO HEIGHT -   151.260 (meters)      496.26  (feet) ADJUSTED
 JV3937  ______________________________________________________________________
 JV3937  GEOID HEIGHT    -        -33.320 (meters)                     GEOID18
 JV3937  DYNAMIC HEIGHT  -        151.173 (meters)      495.97  (feet) COMP
 JV3937  MODELED GRAVITY -    980,049.4   (mgal)                       NAVD 88
 JV3937
 JV3937  VERT ORDER      -  FIRST     CLASS II
 JV3937
 JV3937.The horizontal coordinates were established by autonomous hand held GPS
 JV3937.observations and have an estimated accuracy of +/- 10 meters.
 JV3937
 JV3937.The orthometric height was determined by differential leveling and
 JV3937.adjusted by the NATIONAL GEODETIC SURVEY
 JV3937.in June 1991.
 JV3937
 JV3937.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3937.GEOID18 height accuracy estimate available here.
 JV3937
 JV3937.Click photographs - Photos may exist for this station.
 JV3937
 JV3937.The dynamic height is computed by dividing the NAVD 88
 JV3937.geopotential number by the normal gravity value computed on the
 JV3937.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3937.degrees latitude (g = 980.6199 gals.).
 JV3937
 JV3937.The modeled gravity was interpolated from observed gravity values.
 JV3937
 JV3937;                    North         East    Units  Estimated Accuracy
 JV3937;SPC MD       -   188,212.      341,781.      MT  (+/- 10 meters HH2 GPS)
 JV3937
 JV3937_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6948460166(NAD 83)
 JV3937
 JV3937                          SUPERSEDED SURVEY CONTROL
 JV3937
 JV3937.No superseded survey control is available for this station.
 JV3937
 JV3937_MARKER: DV = VERTICAL CONTROL DISK
 JV3937_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3937_STAMPING: D 146 1979
 JV3937_MARK LOGO: NGS
 JV3937_PROJECTION: RECESSED 5 CENTIMETERS
 JV3937_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3937_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3937_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3937+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2020
 JV3937_ROD/PIPE-DEPTH: 4.6 meters
 JV3937
 JV3937  HISTORY     - Date     Condition        Report By
 JV3937  HISTORY     - 1979     MONUMENTED       NGS
 JV3937  HISTORY     - 20101128 GOOD             GEOCAC
 JV3937  HISTORY     - 20200516 GOOD             NGS
 JV3937
 JV3937                          STATION DESCRIPTION
 JV3937
 JV3937'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3937'2.05 MI NORTH FROM WEVERTON.
 JV3937'2.05 MILES NORTHEAST ALONG STATE ROUTE 67 FROM THE NORTH END OF THE
 JV3937'ROUTE 67 OVERPASS BRIDGE OVER U.S. HIGHWAY 340 TO THE MARK ON THE
 JV3937'RIGHT, SET BETWEEN A POWER POLE AND GUY WIRE AT THE ENTRANCE TO
 JV3937'PLEASANT VALLEY ELEMENTARY SCHOOL, 120 FEET SOUTHEAST OF THE CENTER
 JV3937'LINE OF ROUTE 67, 100 FEET SOUTHWEST OF THE CENTER OF THE PAVED
 JV3937'DRIVEWAY LEADING TO THE SCHOOL, 4 FEET SOUTHEAST OF POWER POLE 421,
 JV3937'6 FEET NORTHWEST OF THE BASE OF THE GUY WIRE.
 JV3937'THE MARK IS 1 FT  SW FROM A WITNESS POST.
 JV3937'THE MARK IS 4 FT ABOVE 43.
 JV3937
 JV3937                          STATION RECOVERY (2010)
 JV3937
 JV3937'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV3937'RECOVERED IN GOOD CONDITION.
 JV3937
 JV3937                          STATION RECOVERY (2020)
 JV3937
 JV3937'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (JH)
 JV3937'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3844 ***********************************************************************
 JV3844  DESIGNATION -  D 147
 JV3844  PID         -  JV3844
 JV3844  STATE/COUNTY-  MD/MONTGOMERY
 JV3844  COUNTRY     -  US
 JV3844  USGS QUAD   -  KENSINGTON (2016)
 JV3844
 JV3844                         *CURRENT SURVEY CONTROL
 JV3844  ______________________________________________________________________
 JV3844* NAD 83(1986) POSITION- 39 01 53.     (N) 077 06 20.     (W)   SCALED
 JV3844* NAVD 88 ORTHO HEIGHT -    99.189 (meters)      325.42  (feet) ADJUSTED
 JV3844  ______________________________________________________________________
 JV3844  GEOID HEIGHT    -        -31.821 (meters)                     GEOID18
 JV3844  DYNAMIC HEIGHT  -         99.136 (meters)      325.25  (feet) COMP
 JV3844  MODELED GRAVITY -    980,094.0   (mgal)                       NAVD 88
 JV3844
 JV3844  VERT ORDER      -  FIRST     CLASS II
 JV3844
 JV3844.The horizontal coordinates were scaled from a map and have
 JV3844.an estimated accuracy of +/- 6 seconds.
 JV3844
 JV3844.The orthometric height was determined by differential leveling and
 JV3844.adjusted by the NATIONAL GEODETIC SURVEY
 JV3844.in June 1991.
 JV3844
 JV3844.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3844.GEOID18 height accuracy estimate available here.
 JV3844
 JV3844.Click photographs - Photos may exist for this station.
 JV3844
 JV3844.The dynamic height is computed by dividing the NAVD 88
 JV3844.geopotential number by the normal gravity value computed on the
 JV3844.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3844.degrees latitude (g = 980.6199 gals.).
 JV3844
 JV3844.The modeled gravity was interpolated from observed gravity values.
 JV3844
 JV3844;                    North         East    Units  Estimated Accuracy
 JV3844;SPC MD       -   151,500.      390,860.      MT  (+/- 180 meters Scaled)
 JV3844
 JV3844_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ177223(NAD 83)
 JV3844
 JV3844                          SUPERSEDED SURVEY CONTROL
 JV3844
 JV3844.No superseded survey control is available for this station.
 JV3844
 JV3844_MARKER: DV = VERTICAL CONTROL DISK
 JV3844_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3844_STAMPING: D 147 1979
 JV3844_MARK LOGO: NGS
 JV3844_PROJECTION: RECESSED 10 CENTIMETERS
 JV3844_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3844_ROD/PIPE-DEPTH: 4.6 meters
 JV3844
 JV3844  HISTORY     - Date     Condition        Report By
 JV3844  HISTORY     - 1979     MONUMENTED       NGS
 JV3844
 JV3844                          STATION DESCRIPTION
 JV3844
 JV3844'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3844'1.65 MI SE FROM ROCKVILLE.
 JV3844'1.65 MILES SOUTHEAST ALONG STATE ROUTE 355, ROCKVILLE PIKE FROM THE
 JV3844'JUNCTION OF MONTROSE ROAD IN ROCKVILLE TO THE MARK ON THE LEFT, SET
 JV3844'AT THE SOUTHEAST CORNER OF A BRICK ENTRANCE GATE TO THE AMERICAN
 JV3844'SPEECH AND HEARING ASSSCIATION 10801 ROCKVILLE PIKE, 1 FOOT SOUTHWEST
 JV3844'OF THE SOUTHEAST CORNER OF THE GATE WALL, 17.9 FEET EAST OF THE EAST
 JV3844'CURB OF ROUTE 355, 51 FEET SOUTH OF THE CENTER OF THE PAVED ENTRANCE
 JV3844'DRIVEWAY.
 JV3844'THE MARK IS 1 FT ABOVE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3894 ***********************************************************************
 JV3894  DESIGNATION -  D 148
 JV3894  PID         -  JV3894
 JV3894  STATE/COUNTY-  MD/CECIL
 JV3894  COUNTRY     -  US
 JV3894  USGS QUAD   -  CONOWINGO DAM (2016)
 JV3894
 JV3894                         *CURRENT SURVEY CONTROL
 JV3894  ______________________________________________________________________
 JV3894* NAD 83(1986) POSITION- 39 42 13.     (N) 076 12 05.     (W)   SCALED
 JV3894* NAVD 88 ORTHO HEIGHT -   129.171 (meters)      423.79  (feet) ADJUSTED
 JV3894  ______________________________________________________________________
 JV3894  GEOID HEIGHT    -        -32.910 (meters)                     GEOID18
 JV3894  DYNAMIC HEIGHT  -        129.108 (meters)      423.58  (feet) COMP
 JV3894  MODELED GRAVITY -    980,136.5   (mgal)                       NAVD 88
 JV3894
 JV3894  VERT ORDER      -  FIRST     CLASS II
 JV3894
 JV3894.The horizontal coordinates were scaled from a map and have
 JV3894.an estimated accuracy of +/- 6 seconds.
 JV3894
 JV3894.The orthometric height was determined by differential leveling and
 JV3894.adjusted by the NATIONAL GEODETIC SURVEY
 JV3894.in June 1991.
 JV3894
 JV3894.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3894.GEOID18 height accuracy estimate available here.
 JV3894
 JV3894.Click photographs - Photos may exist for this station.
 JV3894
 JV3894.The dynamic height is computed by dividing the NAVD 88
 JV3894.geopotential number by the normal gravity value computed on the
 JV3894.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3894.degrees latitude (g = 980.6199 gals.).
 JV3894
 JV3894.The modeled gravity was interpolated from observed gravity values.
 JV3894
 JV3894;                    North         East    Units  Estimated Accuracy
 JV3894;SPC MD       -   226,420.      468,490.      MT  (+/- 180 meters Scaled)
 JV3894
 JV3894_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ970955(NAD 83)
 JV3894
 JV3894                          SUPERSEDED SURVEY CONTROL
 JV3894
 JV3894.No superseded survey control is available for this station.
 JV3894
 JV3894_MARKER: DV = VERTICAL CONTROL DISK
 JV3894_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3894_STAMPING: D 148 1979
 JV3894_MARK LOGO: NGS
 JV3894_PROJECTION: FLUSH
 JV3894_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3894_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3894_ROD/PIPE-DEPTH: 7.6 meters
 JV3894
 JV3894  HISTORY     - Date     Condition        Report By
 JV3894  HISTORY     - 1979     MONUMENTED       NGS
 JV3894  HISTORY     - 20011027 GOOD             USPSQD
 JV3894  HISTORY     - 20120308 MARK NOT FOUND   CCDES
 JV3894  HISTORY     - 20250916 SEE DESCRIPTION  PROFLN
 JV3894
 JV3894                          STATION DESCRIPTION
 JV3894
 JV3894'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3894'3.3 MI NW FROM CONOWINGO DAM.
 JV3894'1.75 MILES NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV3894'STATION AT CONOWINGO DAM, THENCE 1.55 MILES NORTH ALONG A PAVED
 JV3894'ROAD AT A PAVED ROAD CROSSING, 1.25 MILES SOUTH OF THE
 JV3894'PENNSYLVANIA STATE LINE, 57.5 FEET NORTHWEST OF THE NORTHWEST
 JV3894'CORNER OF A 5 BY 6 FOOT CONCRETE WELL HOUSING, 49.5 FEET SOUTH
 JV3894'OF THE CENTERLINE OF THE CROSS ROAD, 31 FEET EAST OF THE
 JV3894'CENTER OF THE PAVED ROAD, AND 2.9 FEET EAST OF POWER POLE NUMBER
 JV3894'THE MARK IS 1 FT  W FROM A WITNESS POST AND 1.5 FT ABOVE ROAD.
 JV3894
 JV3894                          STATION RECOVERY (2001)
 JV3894
 JV3894'RECOVERY NOTE BY US POWER SQUADRON 2001 (LC)
 JV3894'RECOVERED IN GOOD CONDITION.
 JV3894
 JV3894                          STATION RECOVERY (2012)
 JV3894
 JV3894'RECOVERY NOTE BY CECIL COUNTY DEPARTMENT OF 2012 (JEH)
 JV3894'MARK NOT FOUND. WITNESS POST SEVERELY DAMAGED AND SIGNIFICANT GROUND
 JV3894'DISRUPTION AT DESCRIBED LOCATION.
 JV3894
 JV3894                          STATION RECOVERY (2025)
 JV3894
 JV3894'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV3894'DISK AND CASING MISSING. RECOVERED REMNANT OF THE ROD 0.8 FT BELOW
 JV3894'GROUND AT DESCRIBED LOCATION FROM THE ROADS AND THE POLE. PLACED A 10
 JV3894'INCH ROUND VALVE BOX OVER THE ROD. 31 FT EAST OF BELL MANOR ROAD, 48
 JV3894'FT SOUTH OF PILOT TOWN RD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0670 ***********************************************************************
 JW0670  DESIGNATION -  D 15
 JW0670  PID         -  JW0670
 JW0670  STATE/COUNTY-  MD/GARRETT
 JW0670  COUNTRY     -  US
 JW0670  USGS QUAD   -  OAKLAND (2016)
 JW0670
 JW0670                         *CURRENT SURVEY CONTROL
 JW0670  ______________________________________________________________________
 JW0670* NAD 83(1986) POSITION- 39 24 26.     (N) 079 24 29.     (W)   SCALED
 JW0670* NAVD 88 ORTHO HEIGHT -   726.386 (meters)     2383.15  (feet) ADJUSTED
 JW0670  ______________________________________________________________________
 JW0670  GEOID HEIGHT    -        -31.141 (meters)                     GEOID18
 JW0670  DYNAMIC HEIGHT  -        725.894 (meters)     2381.54  (feet) COMP
 JW0670  MODELED GRAVITY -    979,924.2   (mgal)                       NAVD 88
 JW0670
 JW0670  VERT ORDER      -  FIRST     CLASS II
 JW0670
 JW0670.The horizontal coordinates were scaled from a map and have
 JW0670.an estimated accuracy of +/- 6 seconds.
 JW0670
 JW0670.The orthometric height was determined by differential leveling and
 JW0670.adjusted by the NATIONAL GEODETIC SURVEY
 JW0670.in June 1991.
 JW0670
 JW0670.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0670.GEOID18 height accuracy estimate available here.
 JW0670
 JW0670.Click photographs - Photos may exist for this station.
 JW0670
 JW0670.The dynamic height is computed by dividing the NAVD 88
 JW0670.geopotential number by the normal gravity value computed on the
 JW0670.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0670.degrees latitude (g = 980.6199 gals.).
 JW0670
 JW0670.The modeled gravity was interpolated from observed gravity values.
 JW0670
 JW0670;                    North         East    Units  Estimated Accuracy
 JW0670;SPC MD       -   195,950.      192,630.      MT  (+/- 180 meters Scaled)
 JW0670
 JW0670_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD370631(NAD 83)
 JW0670
 JW0670                          SUPERSEDED SURVEY CONTROL
 JW0670
 JW0670  NGVD 29 (??/??/92)  726.529  (m)         2383.62   (f) ADJ UNCH    1 2
 JW0670
 JW0670.Superseded values are not recommended for survey control.
 JW0670
 JW0670.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0670.See file dsdata.pdf to determine how the superseded data were derived.
 JW0670
 JW0670_MARKER: DB = BENCH MARK DISK
 JW0670_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW0670_SP_SET: VIADUCT BASE
 JW0670_STAMPING: D 15 1935
 JW0670_MARK LOGO: CGS
 JW0670_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0670
 JW0670  HISTORY     - Date     Condition        Report By
 JW0670  HISTORY     - 1935     MONUMENTED       CGS
 JW0670  HISTORY     - 1935     GOOD             CGS
 JW0670  HISTORY     - 1983     GOOD             NGS
 JW0670  HISTORY     - 20160923 MARK NOT FOUND   GEOCAC
 JW0670
 JW0670                          STATION DESCRIPTION
 JW0670
 JW0670'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0670'AT OAKLAND.
 JW0670'AT OAKLAND, GARRETT COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JW0670'0.1 MILE EAST OF THE STATION, ABOUT 129 FEET EAST OF THE CENTER
 JW0670'LINE OF SECOND STREET, ABOUT 81 FEET EAST OF THE SIGNALMANS HOUSE,
 JW0670'45 FEET SOUTHWEST OF POLE 231+40, IN THE NORTH FACE OF THE WEST
 JW0670'CONCRETE BASE OF A VIADUCT, 12 FEET SOUTH OF THE CENTER LINE OF
 JW0670'THE SOUTH TRACK, AND ABOUT 2 FEET HIGHER THAN THE TRACK.  A
 JW0670'STANDARD DISK, STAMPED D 15 1935 AND SET VERTICALLY.
 JW0670
 JW0670                          STATION RECOVERY (1935)
 JW0670
 JW0670'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JW0670'RECOVERED IN GOOD CONDITION.
 JW0670
 JW0670                          STATION RECOVERY (1983)
 JW0670
 JW0670'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0670'RECOVERED IN GOOD CONDITION.
 JW0670
 JW0670                          STATION RECOVERY (2016)
 JW0670
 JW0670'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW0670'THE CONCRETE BASE OF THE VIADUCT HAS BEEN REDONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6548 ***********************************************************************
 JV6548  DESIGNATION -  D 16 RESET
 JV6548  PID         -  JV6548
 JV6548  STATE/COUNTY-  MD/MONTGOMERY
 JV6548  COUNTRY     -  US
 JV6548  USGS QUAD   -  KENSINGTON (2016)
 JV6548
 JV6548                         *CURRENT SURVEY CONTROL
 JV6548  ______________________________________________________________________
 JV6548* NAD 83(1986) POSITION- 39 00 30.     (N) 077 02 23.     (W)   SCALED
 JV6548* NAVD 88 ORTHO HEIGHT -   106.71  (meters)      350.1   (feet) RESET
 JV6548  ______________________________________________________________________
 JV6548  GEOID HEIGHT    -        -31.943 (meters)                     GEOID18
 JV6548  VERT ORDER      -  THIRD
 JV6548
 JV6548.The horizontal coordinates were scaled from a map and have
 JV6548.an estimated accuracy of +/- 6 seconds.
 JV6548
 JV6548.The orthometric height was computed from unverified reset data.
 JV6548
 JV6548.No vertical observational check was made to the station.
 JV6548
 JV6548.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6548.GEOID18 height accuracy estimate available here.
 JV6548
 JV6548.Click photographs - Photos may exist for this station.
 JV6548
 JV6548;                    North         East    Units  Estimated Accuracy
 JV6548;SPC MD       -   148,930.      396,560.      MT  (+/- 180 meters Scaled)
 JV6548
 JV6548_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ233196(NAD 83)
 JV6548
 JV6548                          SUPERSEDED SURVEY CONTROL
 JV6548
 JV6548  NGVD 29 (11/18/05)  106.93   (m)          350.8    (f) RESET       3  
 JV6548
 JV6548.Superseded values are not recommended for survey control.
 JV6548
 JV6548.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6548.See file dsdata.pdf to determine how the superseded data were derived.
 JV6548
 JV6548_MARKER: DV = VERTICAL CONTROL DISK
 JV6548_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV6548_SP_SET: CATCH BASIN
 JV6548_STAMPING: D 16 RESET 1984
 JV6548_MARK LOGO: NGS
 JV6548_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6548
 JV6548  HISTORY     - Date     Condition        Report By
 JV6548  HISTORY     - 1984     MONUMENTED       NGS
 JV6548
 JV6548                          STATION DESCRIPTION
 JV6548
 JV6548'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6548'IN SILVER SPRINGS.
 JV6548'FROM THE INTERSECTION OF INTERSTATE HIGHWAY 495 AND STATE HIGHWAY 97
 JV6548'(GEORGIA AVENUE) (EXIT 32) GO SOUTHERLY ON STATE HIGHWAY 97
 JV6548'(GEORGIA AVENUE) FOR 0.5 KM (0.30 MI) TO A CROSSROADS AND THE MARK ON
 JV6548'THE LEFT IN THE MONTGOMERY COUNTY PUBLIC PARKING AREA, 46.6 M
 JV6548'(152.9 FT) EAST FROM THE CENTER OF STATE HIGHWAY 97, 9.8 M (32.2 FT)
 JV6548'NORTH FROM THE CENTER OF COLUMBIA BOULEVARD, 3.7 M (12.1 FT) EAST
 JV6548'FROM THE CENTER OF THE ENTRANCE TO THE PARKING AREA, 4.2 M (13.8 FT)
 JV6548'SOUTHWEST FROM A 6-INCH ASPEN TREE 3.7 M (12.1 FT) NORTHWEST FROM A
 JV6548'SIGN MONTGOMERY COUNTY PUBLIC PARKING, AND 0.6 M (2.0 FT) EAST FROM
 JV6548'THE CENTER OF THE FIVE FOOT DROP INLET.
 JV6548'THE MARK IS 2.8 METERS  NW FROM  A WITNESS POST
 JV6548'THE MARK IS 0.2 M ABOVE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1141 ***********************************************************************
 JW1141  DESIGNATION -  D 167
 JW1141  PID         -  JW1141
 JW1141  STATE/COUNTY-  MD/GARRETT
 JW1141  COUNTRY     -  US
 JW1141  USGS QUAD   -  OAKLAND (2016)
 JW1141
 JW1141                         *CURRENT SURVEY CONTROL
 JW1141  ______________________________________________________________________
 JW1141* NAD 83(1986) POSITION- 39 24 05.22   (N) 079 23 33.15   (W)   HD_HELD1
 JW1141* NAVD 88 ORTHO HEIGHT -   754.738 (meters)     2476.17  (feet) ADJUSTED
 JW1141  ______________________________________________________________________
 JW1141  GEOID HEIGHT    -        -31.144 (meters)                     GEOID18
 JW1141  DYNAMIC HEIGHT  -        754.226 (meters)     2474.49  (feet) COMP
 JW1141  MODELED GRAVITY -    979,921.8   (mgal)                       NAVD 88
 JW1141
 JW1141  VERT ORDER      -  SECOND    CLASS I
 JW1141
 JW1141.The horizontal coordinates were determined by differentially corrected
 JW1141.hand held GPS observations or other comparable positioning techniques
 JW1141.and have an estimated accuracy of +/- 3 meters.
 JW1141
 JW1141.The orthometric height was determined by differential leveling and
 JW1141.adjusted by the NATIONAL GEODETIC SURVEY
 JW1141.in December 2003.
 JW1141
 JW1141.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1141.GEOID18 height accuracy estimate available here.
 JW1141
 JW1141.Click photographs - Photos may exist for this station.
 JW1141
 JW1141.The dynamic height is computed by dividing the NAVD 88
 JW1141.geopotential number by the normal gravity value computed on the
 JW1141.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1141.degrees latitude (g = 980.6199 gals.).
 JW1141
 JW1141.The modeled gravity was interpolated from observed gravity values.
 JW1141
 JW1141;                    North         East    Units  Estimated Accuracy
 JW1141;SPC MD       -   195,273.9     193,944.3     MT  (+/- 3 meters HH1 GPS) 
 JW1141
 JW1141_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3840662560(NAD 83)
 JW1141
 JW1141                          SUPERSEDED SURVEY CONTROL
 JW1141
 JW1141  NAVD 88 (06/15/91)  754.732  (m)         2476.15   (f) SUPERSEDED  1 2
 JW1141
 JW1141.Superseded values are not recommended for survey control.
 JW1141
 JW1141.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1141.See file dsdata.pdf to determine how the superseded data were derived.
 JW1141
 JW1141_MARKER: F = FLANGE-ENCASED ROD
 JW1141_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 JW1141+WITH SETTING: INFORMATION.
 JW1141_STAMPING: D 167 1983
 JW1141_MARK LOGO: NGS
 JW1141_PROJECTION: FLUSH
 JW1141_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1141_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW1141_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1141+SATELLITE: SATELLITE OBSERVATIONS - July 17, 2001
 JW1141_ROD/PIPE-DEPTH: 2.3 meters
 JW1141
 JW1141  HISTORY     - Date     Condition        Report By
 JW1141  HISTORY     - 1983     MONUMENTED       NGS
 JW1141  HISTORY     - 19910916 GOOD             MDSHA
 JW1141  HISTORY     - 20010717 GOOD             MDSHA
 JW1141  HISTORY     - 20110909 GOOD             JCLS
 JW1141
 JW1141                          STATION DESCRIPTION
 JW1141
 JW1141'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1141'0.6 KM (0.4 MI) EAST FROM OAKLAND.
 JW1141'0.6 KM (0.4 MI) EAST ALONG STATE HIGHWAY 135 FROM THE JUNCTION OF
 JW1141'U.S. HIGHWAY 219 IN OAKLAND TO THE MARK ON THE LEFT, AT THE JUNCTION
 JW1141'OF COUNTY ROUTE 826-A, 14.50 METERS (47.5 FT) NORTHEAST OF THE
 JW1141'CENTERLINE OF HIGHWAY 135, 15.08 METERS (49.5 FT) SOUTHEAST OF THE
 JW1141'CENTERLINE OF COUNTY ROUTE 826-A, 21.18 METERS (69.5 FT) NORTHWEST OF
 JW1141'THE NORTHWEST FACE OF A STONE BLOCK PLANTER AROUND A SIGN (FOODLAND),
 JW1141'0.30 METER (1.0 FT) NORTH OF THE NORTH CORNER OF THE METAL POST
 JW1141'SUPPORTING THE TRAFFIC SIGNALS.  NOTE--SEVERAL ATTEMPTS WERE MADE TO
 JW1141'DRIVE THE ROD, DRIVEN TO REFUSAL AND ANCHORED.
 JW1141'THE MARK IS 0.30 METERS  NE FROM A WITNESS POST.
 JW1141'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JW1141
 JW1141                          STATION RECOVERY (1991)
 JW1141
 JW1141'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW1141'RECOVERED IN GOOD CONDITION.
 JW1141
 JW1141                          STATION RECOVERY (2001)
 JW1141
 JW1141'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JW1141'RECOVERED AS DESCRIBED.
 JW1141
 JW1141                          STATION RECOVERY (2011)
 JW1141
 JW1141'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2011
 JW1141'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1166 ***********************************************************************
 JW1166  DESIGNATION -  D 168
 JW1166  PID         -  JW1166
 JW1166  STATE/COUNTY-  MD/ALLEGANY
 JW1166  COUNTRY     -  US
 JW1166  USGS QUAD   -  KEYSER (2016)
 JW1166
 JW1166                         *CURRENT SURVEY CONTROL
 JW1166  ______________________________________________________________________
 JW1166* NAD 83(1986) POSITION- 39 29 26.7    (N) 078 56 22.7    (W)   HD_HELD2
 JW1166* NAVD 88 ORTHO HEIGHT -   250.495 (meters)      821.83  (feet) ADJUSTED
 JW1166  ______________________________________________________________________
 JW1166  GEOID HEIGHT    -        -32.337 (meters)                     GEOID18
 JW1166  DYNAMIC HEIGHT  -        250.338 (meters)      821.32  (feet) COMP
 JW1166  MODELED GRAVITY -    979,995.4   (mgal)                       NAVD 88
 JW1166
 JW1166  VERT ORDER      -  FIRST     CLASS II
 JW1166
 JW1166.The horizontal coordinates were established by autonomous hand held GPS
 JW1166.observations and have an estimated accuracy of +/- 10 meters.
 JW1166
 JW1166.The orthometric height was determined by differential leveling and
 JW1166.adjusted by the NATIONAL GEODETIC SURVEY
 JW1166.in June 1991.
 JW1166
 JW1166.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1166.GEOID18 height accuracy estimate available here.
 JW1166
 JW1166.Click photographs - Photos may exist for this station.
 JW1166
 JW1166.The dynamic height is computed by dividing the NAVD 88
 JW1166.geopotential number by the normal gravity value computed on the
 JW1166.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1166.degrees latitude (g = 980.6199 gals.).
 JW1166
 JW1166.The modeled gravity was interpolated from observed gravity values.
 JW1166
 JW1166;                    North         East    Units  Estimated Accuracy
 JW1166;SPC MD       -   204,261.      233,154.      MT  (+/- 10 meters HH2 GPS)
 JW1166
 JW1166_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD7717873264(NAD 83)
 JW1166
 JW1166                          SUPERSEDED SURVEY CONTROL
 JW1166
 JW1166.No superseded survey control is available for this station.
 JW1166
 JW1166_MARKER: DV = VERTICAL CONTROL DISK
 JW1166_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW1166_SP_SET: ABUTMENT
 JW1166_STAMPING: D 168 1983
 JW1166_MARK LOGO: NGS
 JW1166_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1166_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW1166+SATELLITE: SATELLITE OBSERVATIONS - July 04, 2011
 JW1166
 JW1166  HISTORY     - Date     Condition        Report By
 JW1166  HISTORY     - 1983     MONUMENTED       NGS
 JW1166  HISTORY     - 20110704 GOOD             GEOCAC
 JW1166
 JW1166                          STATION DESCRIPTION
 JW1166
 JW1166'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1166'16.0 KM (9.95 MI) SW FROM CRESAPTOWN.
 JW1166'16.0 KM (9.95 MI) SOUTHWEST ALONG U.S. HIGHWAY 220 FROM THE CALVARY
 JW1166'BAPTIST CHURCH IN CRESAPTOWN TO THE MARK ON THE LEFT, IN TOP OF THE
 JW1166'SOUTHEAST END OF THE NORTHEAST ABUTMENT OF THE HIGHWAY BRIDGE OVER A
 JW1166'CREEK, 6.85 METERS (22.5 FT) SOUTHEAST OF THE CENTERLINE OF THE
 JW1166'HIGHWAY, 15.54 METERS (51.0 FT) NORTH OF AND ACROSS THE CREEK FROM THE
 JW1166'NORTH CORNER OF THE CONCRETE BLOCK PORCH OF A SINGLE STORY FRAME
 JW1166'HOUSE.
 JW1166'THE MARK IS 0.45 METERS  SW FROM A WITNESS POST.
 JW1166'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JW1166
 JW1166                          STATION RECOVERY (2011)
 JW1166
 JW1166'RECOVERY NOTE BY GEOCACHING 2011 (DEB)
 JW1166'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1664 ***********************************************************************
 JW1664  DESIGNATION -  D 169 RESET
 JW1664  PID         -  JW1664
 JW1664  STATE/COUNTY-  MD/ALLEGANY
 JW1664  COUNTRY     -  US
 JW1664  USGS QUAD   -  FLINTSTONE (2016)
 JW1664
 JW1664                         *CURRENT SURVEY CONTROL
 JW1664  ______________________________________________________________________
 JW1664* NAD 83(1986) POSITION- 39 41 32.0    (N) 078 30 16.9    (W)   HD_HELD2
 JW1664* NAVD 88 ORTHO HEIGHT -   300.336 (meters)      985.35  (feet) ADJUSTED
 JW1664  ______________________________________________________________________
 JW1664  GEOID HEIGHT    -        -33.230 (meters)                     GEOID18
 JW1664  DYNAMIC HEIGHT  -        300.159 (meters)      984.77  (feet) COMP
 JW1664  MODELED GRAVITY -    980,030.9   (mgal)                       NAVD 88
 JW1664
 JW1664  VERT ORDER      -  SECOND    CLASS I
 JW1664
 JW1664.The horizontal coordinates were established by autonomous hand held GPS
 JW1664.observations and have an estimated accuracy of +/- 10 meters.
 JW1664
 JW1664.The orthometric height was determined by differential leveling and
 JW1664.adjusted by the NATIONAL GEODETIC SURVEY
 JW1664.in April 1995.
 JW1664
 JW1664.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1664.GEOID18 height accuracy estimate available here.
 JW1664
 JW1664.Click photographs - Photos may exist for this station.
 JW1664
 JW1664.The dynamic height is computed by dividing the NAVD 88
 JW1664.geopotential number by the normal gravity value computed on the
 JW1664.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1664.degrees latitude (g = 980.6199 gals.).
 JW1664
 JW1664.The modeled gravity was interpolated from observed gravity values.
 JW1664
 JW1664;                    North         East    Units  Estimated Accuracy
 JW1664;SPC MD       -   225,921.      270,933.      MT  (+/- 10 meters HH2 GPS)
 JW1664
 JW1664_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD1396496574(NAD 83)
 JW1664
 JW1664                          SUPERSEDED SURVEY CONTROL
 JW1664
 JW1664.No superseded survey control is available for this station.
 JW1664
 JW1664_MARKER: DV = VERTICAL CONTROL DISK
 JW1664_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JW1664_SP_SET: MASSIVE CULVERT HEADWALL
 JW1664_STAMPING: D 169 RESET 1989
 JW1664_MARK LOGO: NGS
 JW1664_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1664_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1664+STABILITY: SURFACE MOTION
 JW1664_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1664+SATELLITE: SATELLITE OBSERVATIONS - November 20, 1992
 JW1664
 JW1664  HISTORY     - Date     Condition        Report By
 JW1664  HISTORY     - 1989     MONUMENTED       NGS
 JW1664  HISTORY     - 19921120 GOOD             MDSHA
 JW1664
 JW1664                          STATION DESCRIPTION
 JW1664
 JW1664'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1664'THE MARKER IS LOCATED ABOUT 3.2 MI (5.1 KM) EAST-SOUTHEAST OF
 JW1664'FLINTSTONE, 7.4 MI (11.9 KM) WEST OF PINEY GROVE AND 0.1 MI (0.2 KM)
 JW1664'NORTH-NORTHEAST OF PRATT.  IT IS ON THE ROAD RIGHT-OF-WAY PROPERTY.
 JW1664'TO REACH FROM A POINT WHERE THE VICTOR CUSHWA MEMORIAL BRIDGE PASSES
 JW1664'OVER THE INTERSTATE HIGHWAY 68 AT THE SIDELING HILL EXHIBIT CENTER,
 JW1664'GO WEST ON INTERSTATE HIGHWAY 68 FOR 14.6 MI (23.5 KM) TO THE MARKER
 JW1664'ON THE RIGHT, NORTH OF THE WESTBOUND LANES, IN THE TOP OF A CONCRETE
 JW1664'HEADWALL.  THE POINT IS MARKED WITH A STANDARD NATIONAL GEODETIC
 JW1664'SURVEY VERTICAL CONTROL DISK CEMENTED IN A DRILL HOLE IN THE TOP OF
 JW1664'THE SOUTHWEST END OF A CONCRETE HEADWALL FOR A MASSIVE CULVERT UNDER
 JW1664'THE HIGHWAY.  IT IS 91.0 FT (27.7 M) NORTH-NORTHEAST OF THE
 JW1664'CENTERLINE OF THE WESTBOUND LANES OF INTERSTATE HIGHWAY 68, 1.8 FT
 JW1664'(0.5 M) NORTHEAST OF THE SOUTHWEST END OF THE HEADWALL, 3.5 FT (1.1
 JW1664'M) SOUTHEAST OF A CARSONITE WITNESS POST AND ABOUT 15.0 FT (4.6 M)
 JW1664'LOWER THAN THE SURFACE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0646 ***********************************************************************
 JW0646  DESIGNATION -  D 17 RESET
 JW0646  PID         -  JW0646
 JW0646  STATE/COUNTY-  MD/GARRETT
 JW0646  COUNTRY     -  US
 JW0646  USGS QUAD   -  MCHENRY (2016)
 JW0646
 JW0646                         *CURRENT SURVEY CONTROL
 JW0646  ______________________________________________________________________
 JW0646* NAD 83(1986) POSITION- 39 31 20.92   (N) 079 20 00.02   (W)   HD_HELD1
 JW0646* NAVD 88 ORTHO HEIGHT -   759.22  (meters)     2490.9   (feet) RESET
 JW0646  ______________________________________________________________________
 JW0646  GEOID HEIGHT    -        -31.245 (meters)                     GEOID18
 JW0646  VERT ORDER      -  THIRD
 JW0646
 JW0646.The horizontal coordinates were determined by differentially corrected
 JW0646.hand held GPS observations or other comparable positioning techniques
 JW0646.and have an estimated accuracy of +/- 3 meters.
 JW0646
 JW0646.The orthometric height was computed from unverified reset data.
 JW0646
 JW0646.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0646.GEOID18 height accuracy estimate available here.
 JW0646
 JW0646.Click photographs - Photos may exist for this station.
 JW0646
 JW0646;                    North         East    Units  Estimated Accuracy
 JW0646;SPC MD       -   208,574.5     199,385.3     MT  (+/- 3 meters HH1 GPS) 
 JW0646
 JW0646_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4325576085(NAD 83)
 JW0646
 JW0646                          SUPERSEDED SURVEY CONTROL
 JW0646
 JW0646  NGVD 29 (??/??/??)  759.35   (m)         2491.3    (f) RESET       3  
 JW0646
 JW0646.Superseded values are not recommended for survey control.
 JW0646
 JW0646.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0646.See file dsdata.pdf to determine how the superseded data were derived.
 JW0646
 JW0646_MARKER: DD = SURVEY DISK
 JW0646_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0646_STAMPING: D 17 RESET
 JW0646_MARK LOGO: MDBCSM
 JW0646_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0646+STABILITY: SURFACE MOTION
 JW0646
 JW0646  HISTORY     - Date     Condition        Report By
 JW0646  HISTORY     - 1955     MONUMENTED       MDBCSM
 JW0646  HISTORY     - 20101018 MARK NOT FOUND   MDGEO
 JW0646
 JW0646                          STATION DESCRIPTION
 JW0646
 JW0646'DESCRIBED BY MD BUR SURV AND MAPS 1955
 JW0646'9.7 MI N FROM OAKLAND.
 JW0646'9.7 MILES NORTH ALONG U.S. HIGHWAY 219 FROM THE GARRETT COUNTY
 JW0646'HIGH SCHOOL AT OAKLAND, GARRETT COUNTY, 130 FEET WEST OF A
 JW0646'DRIVE LEADING NORTHEAST FROM THE CENTER LINE OF THE HIGHWAY,
 JW0646'AND 85 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY.  SET
 JW0646'IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES ABOVE GROUND.
 JW0646'NOTE-- THIS BENCH MARK WAS ESTABLISHED AND ITS ELEVATION DETERMINED
 JW0646'BY ENGINEERS OF THE STATE BUREAU OF CONTROL SURVEYS AND MAPS
 JW0646'IN MARCH 1955.
 JW0646
 JW0646                          STATION RECOVERY (2010)
 JW0646
 JW0646'RECOVERY NOTE BY MARYLAND GEOLOGICAL SURVEY 2010 (RAO)
 JW0646'MARK NOT FOUND.  BUILDING AND PARKING LOT COVER THE DESCRIBED
 JW0646'LOCATION.  A NEW MARK LABELED '311' WAS FOUND 10-15 METERS SOUTH OF
 JW0646'DESCRIBED LOCATION.  THE NEW MARK IS SET IN A CONCRETE PIER ENCASED BY
 JW0646'PVC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC9953 ***********************************************************************
 AC9953  DESIGNATION -  D 170
 AC9953  PID         -  AC9953
 AC9953  STATE/COUNTY-  MD/SOMERSET
 AC9953  COUNTRY     -  US
 AC9953  USGS QUAD   -  DEAL ISLAND (2016)
 AC9953
 AC9953                         *CURRENT SURVEY CONTROL
 AC9953  ______________________________________________________________________
 AC9953* NAD 83(1986) POSITION- 38 10 00.     (N) 075 56 44.     (W)   SCALED
 AC9953* NAVD 88 ORTHO HEIGHT -     3.696 (meters)       12.13  (feet) ADJUSTED
 AC9953  ______________________________________________________________________
 AC9953  GEOID HEIGHT    -        -35.789 (meters)                     GEOID18
 AC9953  DYNAMIC HEIGHT  -          3.693 (meters)       12.12  (feet) COMP
 AC9953  MODELED GRAVITY -    979,984.8   (mgal)                       NAVD 88
 AC9953
 AC9953  VERT ORDER      -  SECOND    CLASS I
 AC9953
 AC9953.The horizontal coordinates were scaled from a map and have
 AC9953.an estimated accuracy of +/- 6 seconds.
 AC9953
 AC9953.The orthometric height was determined by differential leveling and
 AC9953.adjusted by the NATIONAL GEODETIC SURVEY
 AC9953.in October 1997.
 AC9953
 AC9953.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC9953.GEOID18 height accuracy estimate available here.
 AC9953
 AC9953.Click photographs - Photos may exist for this station.
 AC9953
 AC9953.The dynamic height is computed by dividing the NAVD 88
 AC9953.geopotential number by the normal gravity value computed on the
 AC9953.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC9953.degrees latitude (g = 980.6199 gals.).
 AC9953
 AC9953.The modeled gravity was interpolated from observed gravity values.
 AC9953
 AC9953;                    North         East    Units  Estimated Accuracy
 AC9953;SPC MD       -    56,040.      492,410.      MT  (+/- 180 meters Scaled)
 AC9953
 AC9953_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH171247(NAD 83)
 AC9953
 AC9953                          SUPERSEDED SURVEY CONTROL
 AC9953
 AC9953.No superseded survey control is available for this station.
 AC9953
 AC9953_MARKER: DV = VERTICAL CONTROL DISK
 AC9953_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 AC9953_SP_SET: BRIDGE ABUTMENT
 AC9953_STAMPING: D 170 1987
 AC9953_MARK LOGO: NGS
 AC9953_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC9953_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AC9953_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC9953+SATELLITE: SATELLITE OBSERVATIONS - 1987
 AC9953
 AC9953  HISTORY     - Date     Condition        Report By
 AC9953  HISTORY     - 1987     MONUMENTED       NGS
 AC9953
 AC9953                          STATION DESCRIPTION
 AC9953
 AC9953'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 AC9953'FROM THE POST OFFICE IN CHANCE GO SW FOR 70 M (229.7 FT) ON HAINES
 AC9953'POINT ROAD TO A ROAD CROSSING. TURN RIGHT AND GO SW FOR 1 KM (0.60 MI)
 AC9953'ON HIGHWAY 363 TO THE SW END OF A BRIDGE. THE MARK IS ON THE RIGHT 5.4
 AC9953'M (17.7 FT) NW FROM THE CENTERLINE OF HIGHWAY 363, 0.6 M (2.0 FT) NW
 AC9953'FROM THE NW SIDE OF A PARAPET WALL, 21.9 M (71.9 FT) SSE FROM
 AC9953'POWERLINE POLE NO. 36844-85994, 36.6 M (120.1 FT) SSW FROM POWERLINE
 AC9953'POLE NO. 36847-85997, AND 31.4 M (103.0 FT) SOUTH FROM THE SW CORNER
 AC9953'OF A BLOCK BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2210 ***********************************************************************
 HU2210  DESIGNATION -  D 171
 HU2210  PID         -  HU2210
 HU2210  STATE/COUNTY-  MD/WICOMICO
 HU2210  COUNTRY     -  US
 HU2210  USGS QUAD   -  SHARPTOWN (2016)
 HU2210
 HU2210                         *CURRENT SURVEY CONTROL
 HU2210  ______________________________________________________________________
 HU2210* NAD 83(1986) POSITION- 38 30 22.1    (N) 075 44 46.3    (W)   HD_HELD2
 HU2210* NAVD 88 ORTHO HEIGHT -     5.262 (meters)       17.26  (feet) ADJUSTED
 HU2210  ______________________________________________________________________
 HU2210  GEOID HEIGHT    -        -35.555 (meters)                     GEOID18
 HU2210  DYNAMIC HEIGHT  -          5.259 (meters)       17.25  (feet) COMP
 HU2210  MODELED GRAVITY -    980,011.7   (mgal)                       NAVD 88
 HU2210
 HU2210  VERT ORDER      -  SECOND    CLASS I
 HU2210
 HU2210.The horizontal coordinates were established by autonomous hand held GPS
 HU2210.observations and have an estimated accuracy of +/- 10 meters.
 HU2210
 HU2210.The orthometric height was determined by differential leveling and
 HU2210.adjusted by the NATIONAL GEODETIC SURVEY
 HU2210.in June 1991.
 HU2210
 HU2210.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2210.GEOID18 height accuracy estimate available here.
 HU2210
 HU2210.Click photographs - Photos may exist for this station.
 HU2210
 HU2210.The dynamic height is computed by dividing the NAVD 88
 HU2210.geopotential number by the normal gravity value computed on the
 HU2210.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2210.degrees latitude (g = 980.6199 gals.).
 HU2210
 HU2210.The modeled gravity was interpolated from observed gravity values.
 HU2210
 HU2210;                    North         East    Units  Estimated Accuracy
 HU2210;SPC MD       -    93,936.      509,357.      MT  (+/- 10 meters HH2 GPS)
 HU2210
 HU2210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3493862238(NAD 83)
 HU2210
 HU2210                          SUPERSEDED SURVEY CONTROL
 HU2210
 HU2210  NGVD 29 (06/12/91)    5.507  (m)           18.07   (f) ADJUSTED    2 1
 HU2210
 HU2210.Superseded values are not recommended for survey control.
 HU2210
 HU2210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2210.See file dsdata.pdf to determine how the superseded data were derived.
 HU2210
 HU2210_MARKER: DV = VERTICAL CONTROL DISK
 HU2210_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2210_STAMPING: D 171 1989
 HU2210_MARK LOGO: NGS
 HU2210_PROJECTION: RECESSED 12 CENTIMETERS
 HU2210_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2210_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2210+STABILITY: SURFACE MOTION
 HU2210_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2210+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2017
 HU2210
 HU2210  HISTORY     - Date     Condition        Report By
 HU2210  HISTORY     - 1989     MONUMENTED       MDSHA
 HU2210  HISTORY     - 19900221 GOOD             NGS
 HU2210  HISTORY     - 20170329 GOOD             PROFLN
 HU2210
 HU2210                          STATION DESCRIPTION
 HU2210
 HU2210'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2210'4.6 KM (2.86 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 313 FROM THE
 HU2210'JUNCTION OF STATE HIGHWAY 348 IN SHARPTOWN, 11.0 M (36.09 FT)
 HU2210'SOUTHEAST OF THE CENTERLINE OF THE HIGHWAY, 8.2 M (26.90 FT) WEST OF
 HU2210'THE WEST CORNER OF A CONCRETE BLOCK BUILDING, 6.5 M (21.33 FT)
 HU2210'NORTHEAST OF THE CENTER OF SNETHERN CHURCH ROAD, 2.7 M (8.86 FT)
 HU2210'WEST-NORTHWEST OF A WITNESS POST, LEVEL WITH THE HIGHWAY, AND IN A
 HU2210'CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2210
 HU2210                          STATION RECOVERY (2017)
 HU2210
 HU2210'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2210'RECOVERED GOOD AT THE EAST CORNER OF SHARPTOWN ROAD AND SNETHEN CHURCH
 HU2210'ROAD, 3 FT (0.9 M) NORTH OF A STREET SIGN, 0.4 FT (12 CM) BELOW
 HU2210'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6166 ***********************************************************************
 JV6166  DESIGNATION -  D 172
 JV6166  PID         -  JV6166
 JV6166  STATE/COUNTY-  MD/HARFORD
 JV6166  COUNTRY     -  US
 JV6166  USGS QUAD   -  WHITE MARSH (2016)
 JV6166
 JV6166                         *CURRENT SURVEY CONTROL
 JV6166  ______________________________________________________________________
 JV6166* NAD 83(1986) POSITION- 39 29 58.     (N) 076 23 56.     (W)   SCALED
 JV6166* NAVD 88 ORTHO HEIGHT -   140.642 (meters)      461.42  (feet) ADJUSTED
 JV6166  ______________________________________________________________________
 JV6166  GEOID HEIGHT    -        -32.761 (meters)                     GEOID18
 JV6166  DYNAMIC HEIGHT  -        140.569 (meters)      461.18  (feet) COMP
 JV6166  MODELED GRAVITY -    980,110.0   (mgal)                       NAVD 88
 JV6166
 JV6166  VERT ORDER      -  FIRST     CLASS II
 JV6166
 JV6166.The horizontal coordinates were scaled from a map and have
 JV6166.an estimated accuracy of +/- 6 seconds.
 JV6166
 JV6166.The orthometric height was determined by differential leveling and
 JV6166.adjusted by the NATIONAL GEODETIC SURVEY
 JV6166.in June 1991.
 JV6166
 JV6166.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6166.GEOID18 height accuracy estimate available here.
 JV6166
 JV6166.Click photographs - Photos may exist for this station.
 JV6166
 JV6166.The dynamic height is computed by dividing the NAVD 88
 JV6166.geopotential number by the normal gravity value computed on the
 JV6166.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6166.degrees latitude (g = 980.6199 gals.).
 JV6166
 JV6166.The modeled gravity was interpolated from observed gravity values.
 JV6166
 JV6166;                    North         East    Units  Estimated Accuracy
 JV6166;SPC MD       -   203,620.      451,700.      MT  (+/- 180 meters Scaled)
 JV6166
 JV6166_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ797731(NAD 83)
 JV6166
 JV6166                          SUPERSEDED SURVEY CONTROL
 JV6166
 JV6166.No superseded survey control is available for this station.
 JV6166
 JV6166_MARKER: F = FLANGE-ENCASED ROD
 JV6166_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6166_STAMPING: D 172 1989
 JV6166_MARK LOGO: NGS
 JV6166_PROJECTION: FLUSH
 JV6166_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6166_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6166_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6166+SATELLITE: SATELLITE OBSERVATIONS - April 09, 2025
 JV6166_ROD/PIPE-DEPTH: 1.8 meters
 JV6166
 JV6166  HISTORY     - Date     Condition        Report By
 JV6166  HISTORY     - 1989     MONUMENTED       NGS
 JV6166  HISTORY     - 20020217 GOOD             USPSQD
 JV6166  HISTORY     - 20150615 GOOD             USPSQD
 JV6166  HISTORY     - 20250409 GOOD             USGS
 JV6166
 JV6166                          STATION DESCRIPTION
 JV6166
 JV6166'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6166'0.9 KM (0.55 MI) NORTHERLY ALONG STATE HIGHWAY 152 FROM ITS JUNCTION
 JV6166'WITH U.S. HIGHWAY 1 IN LYNCHS CORNER, 21.7 M (71.2 FT) SOUTHEAST OF
 JV6166'AN ENTRANCE TO A PARKING LOT, 10.5 M (34.4 FT) SOUTHWEST OF THE
 JV6166'CENTERLINE OF THE SOUTHBOUND LANES OF THE HIGHWAY, 0.7 M (2.3 FT)
 JV6166'NORTHWEST OF UTILITY POLE NUMBER 216672, AND LEVEL WITH THE HIGHWAY.
 JV6166'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6166
 JV6166                          STATION RECOVERY (2002)
 JV6166
 JV6166'RECOVERY NOTE BY US POWER SQUADRON 2002 (RG)
 JV6166'RECOVERED IN GOOD CONDITION.
 JV6166
 JV6166                          STATION RECOVERY (2015)
 JV6166
 JV6166'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV6166'RECOVERED IN GOOD CONDITION.
 JV6166
 JV6166                          STATION RECOVERY (2025)
 JV6166
 JV6166'RECOVERY NOTE BY US GEOLOGICAL SURVEY 2025 (NCG)
 JV6166'ROD ITSELF WAS IN GOOD CONDITION, BUT CASING WAS FULL OF WATER AND IS
 JV6166'SUBJECT TO INTRUSION.  THE MARK WAS 3.6 FT (1.1 M) NORTH OF UTILITY
 JV6166'POLE 216672, AS MEASURED WITH AN ENGINEER'S RULER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6198 ***********************************************************************
 JV6198  DESIGNATION -  D 173
 JV6198  PID         -  JV6198
 JV6198  STATE/COUNTY-  MD/HARFORD
 JV6198  COUNTRY     -  US
 JV6198  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6198
 JV6198                         *CURRENT SURVEY CONTROL
 JV6198  ______________________________________________________________________
 JV6198* NAD 83(1986) POSITION- 39 34 30.     (N) 076 23 10.     (W)   SCALED
 JV6198* NAVD 88 ORTHO HEIGHT -   153.947 (meters)      505.07  (feet) ADJUSTED
 JV6198  ______________________________________________________________________
 JV6198  GEOID HEIGHT    -        -32.663 (meters)                     GEOID18
 JV6198  DYNAMIC HEIGHT  -        153.869 (meters)      504.82  (feet) COMP
 JV6198  MODELED GRAVITY -    980,115.5   (mgal)                       NAVD 88
 JV6198
 JV6198  VERT ORDER      -  FIRST     CLASS II
 JV6198
 JV6198.The horizontal coordinates were scaled from a map and have
 JV6198.an estimated accuracy of +/- 6 seconds.
 JV6198
 JV6198.The orthometric height was determined by differential leveling and
 JV6198.adjusted by the NATIONAL GEODETIC SURVEY
 JV6198.in June 1991.
 JV6198
 JV6198.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6198.GEOID18 height accuracy estimate available here.
 JV6198
 JV6198.Click photographs - Photos may exist for this station.
 JV6198
 JV6198.The dynamic height is computed by dividing the NAVD 88
 JV6198.geopotential number by the normal gravity value computed on the
 JV6198.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6198.degrees latitude (g = 980.6199 gals.).
 JV6198
 JV6198.The modeled gravity was interpolated from observed gravity values.
 JV6198
 JV6198;                    North         East    Units  Estimated Accuracy
 JV6198;SPC MD       -   212,020.      452,750.      MT  (+/- 180 meters Scaled)
 JV6198
 JV6198_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ809815(NAD 83)
 JV6198
 JV6198                          SUPERSEDED SURVEY CONTROL
 JV6198
 JV6198.No superseded survey control is available for this station.
 JV6198
 JV6198_MARKER: I = METAL ROD
 JV6198_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6198_STAMPING: D 173 1989
 JV6198_MARK LOGO: NGS
 JV6198_PROJECTION: FLUSH
 JV6198_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6198_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6198+STABILITY: POSITION/ELEVATION WELL
 JV6198_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6198+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6198_ROD/PIPE-DEPTH: 3.6 meters
 JV6198_SLEEVE-DEPTH  : 3.0 meters
 JV6198
 JV6198  HISTORY     - Date     Condition        Report By
 JV6198  HISTORY     - 1989     MONUMENTED       NGS
 JV6198
 JV6198                          STATION DESCRIPTION
 JV6198
 JV6198'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6198'1.1 KM (0.70 MI) SOUTHERLY ALONG STATE HIGHWAY 24 FROM THE JUNCTION
 JV6198'OF JARRETTSVILLE ROAD IN FOREST HILL, 93.5 M (306.8 FT) SOUTH OF THE
 JV6198'CENTERLINE OF STATE HIGHWAY 23, 30.0 M (98.4 FT) EAST OF THE
 JV6198'CENTERLINE OF STATE HIGHWAY 24, 2.8 M (9.2 FT) NORTH OF A WITNESS
 JV6198'POST AND UTILITY POLE NUMBER 268014, 2.5 M (8.2 FT) WEST OF THE WEST
 JV6198'CURB OF THE WEST PARKING LOT OF THE KLEINS SHOPPING MALL, AND LEVEL
 JV6198'WITH THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 JV6198'5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6187 ***********************************************************************
 JV6187  DESIGNATION -  D 174
 JV6187  PID         -  JV6187
 JV6187  STATE/COUNTY-  MD/HARFORD
 JV6187  COUNTRY     -  US
 JV6187  USGS QUAD   -  FAWN GROVE (2019)
 JV6187
 JV6187                         *CURRENT SURVEY CONTROL
 JV6187  ______________________________________________________________________
 JV6187* NAD 83(1986) POSITION- 39 41 32.8    (N) 076 23 54.4    (W)   HD_HELD2
 JV6187* NAVD 88 ORTHO HEIGHT -   141.854 (meters)      465.40  (feet) ADJUSTED
 JV6187  ______________________________________________________________________
 JV6187  GEOID HEIGHT    -        -32.682 (meters)                     GEOID18
 JV6187  DYNAMIC HEIGHT  -        141.783 (meters)      465.17  (feet) COMP
 JV6187  MODELED GRAVITY -    980,122.7   (mgal)                       NAVD 88
 JV6187
 JV6187  VERT ORDER      -  FIRST     CLASS II
 JV6187
 JV6187.The horizontal coordinates were established by autonomous hand held GPS
 JV6187.observations and have an estimated accuracy of +/- 10 meters.
 JV6187
 JV6187.The orthometric height was determined by differential leveling and
 JV6187.adjusted by the NATIONAL GEODETIC SURVEY
 JV6187.in June 1991.
 JV6187
 JV6187.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6187.GEOID18 height accuracy estimate available here.
 JV6187
 JV6187.Click photographs - Photos may exist for this station.
 JV6187
 JV6187.The dynamic height is computed by dividing the NAVD 88
 JV6187.geopotential number by the normal gravity value computed on the
 JV6187.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6187.degrees latitude (g = 980.6199 gals.).
 JV6187
 JV6187.The modeled gravity was interpolated from observed gravity values.
 JV6187
 JV6187;                    North         East    Units  Estimated Accuracy
 JV6187;SPC MD       -   225,052.      451,601.      MT  (+/- 10 meters HH2 GPS)
 JV6187
 JV6187_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8009394557(NAD 83)
 JV6187
 JV6187                          SUPERSEDED SURVEY CONTROL
 JV6187
 JV6187.No superseded survey control is available for this station.
 JV6187
 JV6187_MARKER: I = METAL ROD
 JV6187_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6187_STAMPING: D 174 1989
 JV6187_MARK LOGO: NGS
 JV6187_PROJECTION: FLUSH
 JV6187_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6187_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6187_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6187+SATELLITE: SATELLITE OBSERVATIONS - November 08, 2004
 JV6187_ROD/PIPE-DEPTH: 4.3 meters
 JV6187
 JV6187  HISTORY     - Date     Condition        Report By
 JV6187  HISTORY     - 1989     MONUMENTED       NGS
 JV6187  HISTORY     - 20041108 GOOD             GEOCAC
 JV6187
 JV6187                          STATION DESCRIPTION
 JV6187
 JV6187'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6187'3.4 KM (2.10 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 165 FROM THE
 JV6187'JUNCTION OF STATE HIGHWAY 136 IN WHITEFORD, THENCE 2.2 KM (1.35 MI)
 JV6187'WESTERLY ALONG SAINT MARYS ROAD, 42.1 M (138.1 FT) WEST OF THE CENTER
 JV6187'OF A DRIVEWAY AT 221 SAINT MARYS ROAD, 6.3 M (20.7 FT) SOUTH OF THE
 JV6187'CENTERLINE OF THE ROAD, 0.6 M (2.0 FT) EAST OF A WITNESS POST AND
 JV6187'UTILITY POLE NUMBER 19001, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO
 JV6187'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6187
 JV6187                          STATION RECOVERY (2004)
 JV6187
 JV6187'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6187'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2418 ***********************************************************************
 HU2418  DESIGNATION -  D 175
 HU2418  PID         -  HU2418
 HU2418  STATE/COUNTY-  MD/WICOMICO
 HU2418  COUNTRY     -  US
 HU2418  USGS QUAD   -  WANGO (2016)
 HU2418
 HU2418                         *CURRENT SURVEY CONTROL
 HU2418  ______________________________________________________________________
 HU2418* NAD 83(1986) POSITION- 38 22 15.     (N) 075 27 46.     (W)   SCALED
 HU2418* NAVD 88 ORTHO HEIGHT -    18.709 (meters)       61.38  (feet) ADJUSTED
 HU2418  ______________________________________________________________________
 HU2418  GEOID HEIGHT    -        -35.896 (meters)                     GEOID18
 HU2418  DYNAMIC HEIGHT  -         18.697 (meters)       61.34  (feet) COMP
 HU2418  MODELED GRAVITY -    980,005.5   (mgal)                       NAVD 88
 HU2418
 HU2418  VERT ORDER      -  SECOND    CLASS I
 HU2418
 HU2418.The horizontal coordinates were scaled from a map and have
 HU2418.an estimated accuracy of +/- 6 seconds.
 HU2418
 HU2418.The orthometric height was determined by differential leveling and
 HU2418.adjusted by the NATIONAL GEODETIC SURVEY
 HU2418.in June 1991.
 HU2418
 HU2418.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2418.GEOID18 height accuracy estimate available here.
 HU2418
 HU2418.Click photographs - Photos may exist for this station.
 HU2418
 HU2418.The dynamic height is computed by dividing the NAVD 88
 HU2418.geopotential number by the normal gravity value computed on the
 HU2418.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2418.degrees latitude (g = 980.6199 gals.).
 HU2418
 HU2418.The modeled gravity was interpolated from observed gravity values.
 HU2418
 HU2418;                    North         East    Units  Estimated Accuracy
 HU2418;SPC MD       -    79,300.      534,330.      MT  (+/- 180 meters Scaled)
 HU2418
 HU2418_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH595470(NAD 83)
 HU2418
 HU2418                          SUPERSEDED SURVEY CONTROL
 HU2418
 HU2418  NGVD 29 (06/12/91)   18.954  (m)           62.18   (f) ADJUSTED    2 1
 HU2418
 HU2418.Superseded values are not recommended for survey control.
 HU2418
 HU2418.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2418.See file dsdata.pdf to determine how the superseded data were derived.
 HU2418
 HU2418_MARKER: I = METAL ROD
 HU2418_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2418_STAMPING: D 175 1990
 HU2418_MARK LOGO: NGS
 HU2418_PROJECTION: RECESSED 1 CENTIMETERS
 HU2418_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2418_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2418_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2418+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2418_ROD/PIPE-DEPTH: 13.4 meters
 HU2418_SLEEVE-DEPTH  : 0.9 meters
 HU2418
 HU2418  HISTORY     - Date     Condition        Report By
 HU2418  HISTORY     - 1990     MONUMENTED       NGS
 HU2418
 HU2418                          STATION DESCRIPTION
 HU2418
 HU2418'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2418'21.0 KM (13.05 MI) SOUTHERLY ALONG FOREST GROVE ROAD FROM THE JUNCTION
 HU2418'WITH STATE HIGHWAY 346 (OCEAN CITY ROAD) IN PARSONSBURG, IN THE
 HU2418'NORTHEAST CORNER OF THE FOREST GROVE CEMETERY, 23.0 M (75.46 FT)
 HU2418'SOUTHWEST OF AND LEVEL WITH THE ROAD CENTER, 8.2 M (26.90 FT)
 HU2418'NORTHEAST OF THE NORTHEAST CORNER OF THE WHITE-BEATHARD HEADSTONE, AND
 HU2418'7.3 M (23.95 FT) SOUTH OF THE CENTER OF LONG RIDGE ROAD. NOTE--ACCESS
 HU2418'TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2418'PROPERTY OF THE FOREST GROVE CEMETERY, ELBERT ROBBINS, 207 EAST PINE
 HU2418'STREET, DELMAR, MD 21879, TELEPHONE NUMBER (301)896-3769.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2312 ***********************************************************************
 HU2312  DESIGNATION -  D 176
 HU2312  PID         -  HU2312
 HU2312  STATE/COUNTY-  MD/WICOMICO
 HU2312  COUNTRY     -  US
 HU2312  USGS QUAD   -  HEBRON (2016)
 HU2312
 HU2312                         *CURRENT SURVEY CONTROL
 HU2312  ______________________________________________________________________
 HU2312* NAD 83(1986) POSITION- 38 25 32.     (N) 075 39 06.     (W)   SCALED
 HU2312* NAVD 88 ORTHO HEIGHT -    12.494 (meters)       40.99  (feet) ADJUSTED
 HU2312  ______________________________________________________________________
 HU2312  GEOID HEIGHT    -        -35.708 (meters)                     GEOID18
 HU2312  DYNAMIC HEIGHT  -         12.486 (meters)       40.96  (feet) COMP
 HU2312  MODELED GRAVITY -    980,011.0   (mgal)                       NAVD 88
 HU2312
 HU2312  VERT ORDER      -  SECOND    CLASS I
 HU2312
 HU2312.The horizontal coordinates were scaled from a map and have
 HU2312.an estimated accuracy of +/- 6 seconds.
 HU2312
 HU2312.The orthometric height was determined by differential leveling and
 HU2312.adjusted by the NATIONAL GEODETIC SURVEY
 HU2312.in June 1991.
 HU2312
 HU2312.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2312.GEOID18 height accuracy estimate available here.
 HU2312
 HU2312.Click photographs - Photos may exist for this station.
 HU2312
 HU2312.The dynamic height is computed by dividing the NAVD 88
 HU2312.geopotential number by the normal gravity value computed on the
 HU2312.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2312.degrees latitude (g = 980.6199 gals.).
 HU2312
 HU2312.The modeled gravity was interpolated from observed gravity values.
 HU2312
 HU2312;                    North         East    Units  Estimated Accuracy
 HU2312;SPC MD       -    85,110.      517,730.      MT  (+/- 180 meters Scaled)
 HU2312
 HU2312_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH431532(NAD 83)
 HU2312
 HU2312                          SUPERSEDED SURVEY CONTROL
 HU2312
 HU2312  NGVD 29 (06/12/91)   12.740  (m)           41.80   (f) ADJUSTED    2 1
 HU2312
 HU2312.Superseded values are not recommended for survey control.
 HU2312
 HU2312.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2312.See file dsdata.pdf to determine how the superseded data were derived.
 HU2312
 HU2312_MARKER: I = METAL ROD
 HU2312_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2312_STAMPING: D 176 1990
 HU2312_MARK LOGO: NGS
 HU2312_PROJECTION: RECESSED 2 CENTIMETERS
 HU2312_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2312_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2312_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2312+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2312_ROD/PIPE-DEPTH: 31.7 meters
 HU2312_SLEEVE-DEPTH  : 0.9 meters
 HU2312
 HU2312  HISTORY     - Date     Condition        Report By
 HU2312  HISTORY     - 1990     MONUMENTED       NGS
 HU2312
 HU2312                          STATION DESCRIPTION
 HU2312
 HU2312'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2312'0.2 KM (0.12 MI) WESTERLY ALONG NAYLOR MILL ROAD FROM THE JUNCTION OF
 HU2312'JERSEY ROAD IN SALISBURY, THENCE 4.9 KM (3.04 MI) NORTHWESTERLY ALONG
 HU2312'LOG CABIN ROAD, 25.9 M (84.97 FT) SOUTHWEST OF A 36-INCH PIPE CULVERT
 HU2312', 10.3 M (33.79 FT) WEST OF THE CENTER OF A DRIVEWAY, 9.9 M (32.48
 HU2312'FT) SOUTHEAST OF TELEPHONE PEDASTEL NUMBER 4, 9.8 M (32.15 FT) SOUTH
 HU2312'OF THE CENTER OF THE ROAD, AND 0.3 M (0.98 FT) BELOW THE LEVEL OF THE
 HU2312'HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO
 HU2312'CAP.  THE MONUMENT IS ON PROPERTY OWNED BY JOHN DYKES, RT 10 BOX 116,
 HU2312'LOG CABIN ROAD, SALISBURY, MD 21801, TELEPHONE NUMBER (301) 742-1041.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6215 ***********************************************************************
 JV6215  DESIGNATION -  D 177
 JV6215  PID         -  JV6215
 JV6215  STATE/COUNTY-  MD/HARFORD
 JV6215  COUNTRY     -  US
 JV6215  USGS QUAD   -  BEL AIR (2016)
 JV6215
 JV6215                         *CURRENT SURVEY CONTROL
 JV6215  ______________________________________________________________________
 JV6215* NAD 83(1986) POSITION- 39 36 52.     (N) 076 18 17.     (W)   SCALED
 JV6215* NAVD 88 ORTHO HEIGHT -   100.297 (meters)      329.06  (feet) ADJUSTED
 JV6215  ______________________________________________________________________
 JV6215  GEOID HEIGHT    -        -32.757 (meters)                     GEOID18
 JV6215  DYNAMIC HEIGHT  -        100.247 (meters)      328.89  (feet) COMP
 JV6215  MODELED GRAVITY -    980,124.8   (mgal)                       NAVD 88
 JV6215
 JV6215  VERT ORDER      -  FIRST     CLASS II
 JV6215
 JV6215.The horizontal coordinates were scaled from a map and have
 JV6215.an estimated accuracy of +/- 6 seconds.
 JV6215
 JV6215.The orthometric height was determined by differential leveling and
 JV6215.adjusted by the NATIONAL GEODETIC SURVEY
 JV6215.in June 1991.
 JV6215
 JV6215.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6215.GEOID18 height accuracy estimate available here.
 JV6215
 JV6215.Click photographs - Photos may exist for this station.
 JV6215
 JV6215.The dynamic height is computed by dividing the NAVD 88
 JV6215.geopotential number by the normal gravity value computed on the
 JV6215.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6215.degrees latitude (g = 980.6199 gals.).
 JV6215
 JV6215.The modeled gravity was interpolated from observed gravity values.
 JV6215
 JV6215;                    North         East    Units  Estimated Accuracy
 JV6215;SPC MD       -   216,450.      459,710.      MT  (+/- 180 meters Scaled)
 JV6215
 JV6215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ880857(NAD 83)
 JV6215
 JV6215                          SUPERSEDED SURVEY CONTROL
 JV6215
 JV6215.No superseded survey control is available for this station.
 JV6215
 JV6215_MARKER: I = METAL ROD
 JV6215_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 JV6215+WITH SETTING: INFORMATION.
 JV6215_STAMPING: D 177 1989
 JV6215_MARK LOGO: NGS
 JV6215_PROJECTION: FLUSH
 JV6215_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6215_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6215_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6215+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6215_ROD/PIPE-DEPTH: 1.9 meters
 JV6215
 JV6215  HISTORY     - Date     Condition        Report By
 JV6215  HISTORY     - 1989     MONUMENTED       NGS
 JV6215  HISTORY     - 19980711 GOOD             USPSQD
 JV6215
 JV6215                          STATION DESCRIPTION
 JV6215
 JV6215'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6215'1.6 KM (1.00 MI) SOUTHERLY ALONG STATE HIGHWAY 136 FROM THE JUNCTION
 JV6215'OF STATE HIGHWAY 440 IN DUBLIN, THENCE 4.2 KM (2.60 MI) SOUTHWESTERLY
 JV6215'ALONG U.S. HIGHWAY 1, 12.6 M (41.3 FT) NORTHWEST OF THE CENTERLINE
 JV6215'OF THE HIGHWAY, 10.5 M (34.4 FT) NORTHEAST OF THE CENTER OF ALLIBONE
 JV6215'ROAD, 1.1 M (3.6 FT) ABOVE THE LEVEL OF THE HIGHWAY, AND 0.3 M (1.0
 JV6215'FT) SOUTHEAST OF A WITNESS POST AND FENCE.  NOTE--ACCESS TO THE DATUM
 JV6215'POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6215
 JV6215                          STATION RECOVERY (1998)
 JV6215
 JV6215'RECOVERY NOTE BY US POWER SQUADRON 1998
 JV6215'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2492 ***********************************************************************
 HU2492  DESIGNATION -  D 178
 HU2492  PID         -  HU2492
 HU2492  STATE/COUNTY-  MD/WICOMICO
 HU2492  COUNTRY     -  US
 HU2492  USGS QUAD   -  EDEN (2016)
 HU2492
 HU2492                         *CURRENT SURVEY CONTROL
 HU2492  ______________________________________________________________________
 HU2492* NAD 83(1986) POSITION- 38 20 18.     (N) 075 41 50.     (W)   SCALED
 HU2492* NAVD 88 ORTHO HEIGHT -     1.142 (meters)        3.75  (feet) ADJUSTED
 HU2492  ______________________________________________________________________
 HU2492  GEOID HEIGHT    -        -35.796 (meters)                     GEOID18
 HU2492  DYNAMIC HEIGHT  -          1.141 (meters)        3.74  (feet) COMP
 HU2492  MODELED GRAVITY -    980,002.8   (mgal)                       NAVD 88
 HU2492
 HU2492  VERT ORDER      -  SECOND    CLASS I
 HU2492
 HU2492.The horizontal coordinates were scaled from a map and have
 HU2492.an estimated accuracy of +/- 6 seconds.
 HU2492
 HU2492.The orthometric height was determined by differential leveling and
 HU2492.adjusted by the NATIONAL GEODETIC SURVEY
 HU2492.in June 1991.
 HU2492
 HU2492.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2492.GEOID18 height accuracy estimate available here.
 HU2492
 HU2492.Click photographs - Photos may exist for this station.
 HU2492
 HU2492.The dynamic height is computed by dividing the NAVD 88
 HU2492.geopotential number by the normal gravity value computed on the
 HU2492.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2492.degrees latitude (g = 980.6199 gals.).
 HU2492
 HU2492.The modeled gravity was interpolated from observed gravity values.
 HU2492
 HU2492;                    North         East    Units  Estimated Accuracy
 HU2492;SPC MD       -    75,370.      513,890.      MT  (+/- 180 meters Scaled)
 HU2492
 HU2492_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH390435(NAD 83)
 HU2492
 HU2492                          SUPERSEDED SURVEY CONTROL
 HU2492
 HU2492  NGVD 29 (06/12/91)    1.397  (m)            4.58   (f) ADJUSTED    2 1
 HU2492
 HU2492.Superseded values are not recommended for survey control.
 HU2492
 HU2492.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2492.See file dsdata.pdf to determine how the superseded data were derived.
 HU2492
 HU2492_MARKER: I = METAL ROD
 HU2492_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2492_STAMPING: D 178 1990
 HU2492_MARK LOGO: NGS
 HU2492_PROJECTION: RECESSED 5 CENTIMETERS
 HU2492_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2492_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2492_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2492+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2492_ROD/PIPE-DEPTH: 15.8 meters
 HU2492_SLEEVE-DEPTH  : 0.9 meters
 HU2492
 HU2492  HISTORY     - Date     Condition        Report By
 HU2492  HISTORY     - 1990     MONUMENTED       NGS
 HU2492
 HU2492                          STATION DESCRIPTION
 HU2492
 HU2492'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2492'2.1 KM (1.30 MI) NORTHWESTERLY ALONG SHARPS POINT ROAD FROM THE
 HU2492'JUNCTION OF CAMDEN AVENUE IN FRUITLAND, THENCE 4.5 KM (2.80 MI)
 HU2492'WESTERLY ALONG RIVERSIDE DRIVE, THENCE 0.2 KM (0.12 MI) NORTHWESTERLY
 HU2492'ALONG CAMP GROUND ROAD, 20.0 M (65.62 FT) EAST OF THE CENTER OF UPPER
 HU2492'FERRY ROAD, 7.6 M (24.93 FT) SOUTHWEST OF THE CENTER OF THE DRIVE,
 HU2492'1.5 M (4.92 FT) SOUTHEAST OF WITNESS POST AND UTILITY POLE NUMBER V
 HU2492'178 WITH ONE GUY WIRE, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE
 HU2492'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2317 ***********************************************************************
 HU2317  DESIGNATION -  D 179
 HU2317  PID         -  HU2317
 HU2317  STATE/COUNTY-  MD/WICOMICO
 HU2317  COUNTRY     -  US
 HU2317  USGS QUAD   -  HEBRON (2016)
 HU2317
 HU2317                         *CURRENT SURVEY CONTROL
 HU2317  ______________________________________________________________________
 HU2317* NAD 83(1986) POSITION- 38 24 43.     (N) 075 41 09.     (W)   SCALED
 HU2317* NAVD 88 ORTHO HEIGHT -    10.877 (meters)       35.69  (feet) ADJUSTED
 HU2317  ______________________________________________________________________
 HU2317  GEOID HEIGHT    -        -35.695 (meters)                     GEOID18
 HU2317  DYNAMIC HEIGHT  -         10.871 (meters)       35.67  (feet) COMP
 HU2317  MODELED GRAVITY -    980,010.5   (mgal)                       NAVD 88
 HU2317
 HU2317  VERT ORDER      -  SECOND    CLASS I
 HU2317
 HU2317.The horizontal coordinates were scaled from a map and have
 HU2317.an estimated accuracy of +/- 6 seconds.
 HU2317
 HU2317.The orthometric height was determined by differential leveling and
 HU2317.adjusted by the NATIONAL GEODETIC SURVEY
 HU2317.in June 1991.
 HU2317
 HU2317.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2317.GEOID18 height accuracy estimate available here.
 HU2317
 HU2317.Click photographs - Photos may exist for this station.
 HU2317
 HU2317.The dynamic height is computed by dividing the NAVD 88
 HU2317.geopotential number by the normal gravity value computed on the
 HU2317.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2317.degrees latitude (g = 980.6199 gals.).
 HU2317
 HU2317.The modeled gravity was interpolated from observed gravity values.
 HU2317
 HU2317;                    North         East    Units  Estimated Accuracy
 HU2317;SPC MD       -    83,560.      514,770.      MT  (+/- 180 meters Scaled)
 HU2317
 HU2317_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH401517(NAD 83)
 HU2317
 HU2317                          SUPERSEDED SURVEY CONTROL
 HU2317
 HU2317  NGVD 29 (06/12/91)   11.126  (m)           36.50   (f) ADJUSTED    2 1
 HU2317
 HU2317.Superseded values are not recommended for survey control.
 HU2317
 HU2317.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2317.See file dsdata.pdf to determine how the superseded data were derived.
 HU2317
 HU2317_MARKER: I = METAL ROD
 HU2317_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2317_STAMPING: D 179 1990
 HU2317_MARK LOGO: NGS
 HU2317_PROJECTION: FLUSH
 HU2317_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2317_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2317_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2317+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2317_ROD/PIPE-DEPTH: 23.1 meters
 HU2317_SLEEVE-DEPTH  : 0.9 meters
 HU2317
 HU2317  HISTORY     - Date     Condition        Report By
 HU2317  HISTORY     - 1990     MONUMENTED       NGS
 HU2317
 HU2317                          STATION DESCRIPTION
 HU2317
 HU2317'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2317'0.4 KM (0.25 MI) SOUTHEASTERLY ALONG CHESTNUT STREET FROM THE
 HU2317'JUNCTION OF MAIN STREET IN HEBRON, THENCE 0.4 KM (0.25 MI)
 HU2317'SOUTHEASTERLY ALONG LEVIN DASHIELL ROAD, 15.5 M (50.85 FT) SOUTHEAST
 HU2317'OF THE SOUTHEAST CORNER OF A HOUSE, 8.1 M (26.57 FT) WEST OF AND
 HU2317'LEVEL WITH THE ROAD CENTER, 7.1 M (23.29 FT) NORTH OF THE CENTER OF
 HU2317'WOOD AVENUE, 2.6 M (8.53 FT) NORTHWEST OF UTILITY POLE NUMBER 44394
 HU2317'94865, AND 2.6 M (8.53 FT) SOUTHWEST OF THE SOUTH END OF A CONCRETE
 HU2317'HEADWALL.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO
 HU2317'CAP.  THE MONUMENT IS ON PROPERTY OWNED BY HILDA REED, P.O. BOX 643,
 HU2317'HEBRON, MD 21830, TELEPHONE NUMBER (301) 742-0129.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1522 ***********************************************************************
 HV1522  DESIGNATION -  D 18
 HV1522  PID         -  HV1522
 HV1522  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1522  COUNTRY     -  US
 HV1522  USGS QUAD   -  SOUTH RIVER (2016)
 HV1522
 HV1522                         *CURRENT SURVEY CONTROL
 HV1522  ______________________________________________________________________
 HV1522* NAD 83(1986) POSITION- 38 54 03.60   (N) 076 35 24.88   (W)   HD_HELD1
 HV1522* NAVD 88 ORTHO HEIGHT -    40.729 (meters)      133.63  (feet) ADJUSTED
 HV1522  ______________________________________________________________________
 HV1522  GEOID HEIGHT    -        -33.241 (meters)                     GEOID18
 HV1522  DYNAMIC HEIGHT  -         40.706 (meters)      133.55  (feet) COMP
 HV1522  MODELED GRAVITY -    980,065.0   (mgal)                       NAVD 88
 HV1522
 HV1522  VERT ORDER      -  FIRST     CLASS I
 HV1522
 HV1522.The horizontal coordinates were determined by differentially corrected
 HV1522.hand held GPS observations or other comparable positioning techniques
 HV1522.and have an estimated accuracy of +/- 3 meters.
 HV1522
 HV1522.The orthometric height was determined by differential leveling and
 HV1522.adjusted by the NATIONAL GEODETIC SURVEY
 HV1522.in June 1991.
 HV1522
 HV1522.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1522.GEOID18 height accuracy estimate available here.
 HV1522
 HV1522.Click photographs - Photos may exist for this station.
 HV1522
 HV1522.The dynamic height is computed by dividing the NAVD 88
 HV1522.geopotential number by the normal gravity value computed on the
 HV1522.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1522.degrees latitude (g = 980.6199 gals.).
 HV1522
 HV1522.The modeled gravity was interpolated from observed gravity values.
 HV1522
 HV1522;                    North         East    Units  Estimated Accuracy
 HV1522;SPC MD       -   137,096.1     435,543.2     MT  (+/- 3 meters HH1 GPS) 
 HV1522
 HV1522_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6210206992(NAD 83)
 HV1522
 HV1522                          SUPERSEDED SURVEY CONTROL
 HV1522
 HV1522  NGVD 29 (11/26/84)   40.970  (m)          134.42   (f) ADJUSTED    1 1
 HV1522
 HV1522.Superseded values are not recommended for survey control.
 HV1522
 HV1522.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1522.See file dsdata.pdf to determine how the superseded data were derived.
 HV1522
 HV1522_MARKER: DB = BENCH MARK DISK
 HV1522_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1522_STAMPING: D 18 1935
 HV1522_MARK LOGO: CGS
 HV1522_PROJECTION: FLUSH
 HV1522_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV1522_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1522+STABILITY: SURFACE MOTION
 HV1522_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1522+SATELLITE: SATELLITE OBSERVATIONS - June 11, 2014
 HV1522
 HV1522  HISTORY     - Date     Condition        Report By
 HV1522  HISTORY     - 1935     MONUMENTED       CGS
 HV1522  HISTORY     - 1971     GOOD             NGS
 HV1522  HISTORY     - 20010817 GOOD             MDSHA
 HV1522  HISTORY     - 20041113 GOOD             USPSQD
 HV1522  HISTORY     - 20051215 GOOD             USPSQD
 HV1522  HISTORY     - 20101221 GOOD             NGS
 HV1522  HISTORY     - 20140611 GOOD             NGS
 HV1522
 HV1522                          STATION DESCRIPTION
 HV1522
 HV1522'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1522'2.9 MI NE FROM HARWOOD.
 HV1522'ABOUT 2.5 MILES NORTHEAST ALONG STATE HIGHWAY 2 FROM THE SOUTHWEST
 HV1522'END OF THE SOUTHERN HIGH SCHOOL AT HARWOOD, THENCE 0.4 MILE
 HV1522'NORTHEAST ALONG OLD BIRDSVILLE ROAD, 0.2 MILE SOUTHWEST OF THE
 HV1522'MORE NORTHEASTERLY OF 2 JUNCTIONS OF OLD BIRDSVILLE ROAD AND
 HV1522'STATE HIGHWAY 2, 21 FEET NORTH-NORTHWEST OF THE CENTER LINE OF
 HV1522'THE ROAD, 185 FEET EAST OF THE NORTHEAST CORNER OF A HOUSE,
 HV1522'171 FEET WEST OF THE CENTER LINE OF A FARM ROAD WHICH LEADS
 HV1522'TO A HOUSE, 42 1/2 FEET NORTHWEST AND ACROSS THE ROAD FROM A
 HV1522'12-INCH CEDAR TREE, 1 FOOT SOUTH OF THE SOUTH EDGE OF A
 HV1522'10-INCH HIGH DIRT BANK, 1.0 FOOT EAST OF A METAL WITNESS POST,
 HV1522'ABOUT LEVEL WITH THE ROAD, AND SET IN THE TOP OF A CONCRETE POST
 HV1522'PROJECTING 1 INCH.
 HV1522
 HV1522                          STATION RECOVERY (2001)
 HV1522
 HV1522'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HV1522'RECOVERED AS DESCRIBED.
 HV1522
 HV1522                          STATION RECOVERY (2004)
 HV1522
 HV1522'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1522'RECOVERED IN GOOD CONDITION.
 HV1522
 HV1522                          STATION RECOVERY (2005)
 HV1522
 HV1522'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV1522'RECOVERED IN GOOD CONDITION.
 HV1522
 HV1522                          STATION RECOVERY (2010)
 HV1522
 HV1522'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HV1522'MARK IS 0.12 M (0.4 FT) SE OF A MDSHA ORANGE CARSONITE WITNESS POST
 HV1522
 HV1522                          STATION RECOVERY (2014)
 HV1522
 HV1522'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 HV1522'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2167 ***********************************************************************
 HU2167  DESIGNATION -  D 180
 HU2167  PID         -  HU2167
 HU2167  STATE/COUNTY-  MD/WICOMICO
 HU2167  COUNTRY     -  US
 HU2167  USGS QUAD   -  WETIPQUIN (2016)
 HU2167
 HU2167                         *CURRENT SURVEY CONTROL
 HU2167  ______________________________________________________________________
 HU2167* NAD 83(1986) POSITION- 38 22 20.0    (N) 075 45 43.7    (W)   HD_HELD2
 HU2167* NAVD 88 ORTHO HEIGHT -     3.334 (meters)       10.94  (feet) ADJUSTED
 HU2167  ______________________________________________________________________
 HU2167  GEOID HEIGHT    -        -35.689 (meters)                     GEOID18
 HU2167  DYNAMIC HEIGHT  -          3.331 (meters)       10.93  (feet) COMP
 HU2167  MODELED GRAVITY -    980,006.8   (mgal)                       NAVD 88
 HU2167
 HU2167  VERT ORDER      -  SECOND    CLASS I
 HU2167
 HU2167.The horizontal coordinates were established by autonomous hand held GPS
 HU2167.observations and have an estimated accuracy of +/- 10 meters.
 HU2167
 HU2167.The orthometric height was determined by differential leveling and
 HU2167.adjusted by the NATIONAL GEODETIC SURVEY
 HU2167.in June 1991.
 HU2167
 HU2167.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2167.GEOID18 height accuracy estimate available here.
 HU2167
 HU2167.Click photographs - Photos may exist for this station.
 HU2167
 HU2167.The dynamic height is computed by dividing the NAVD 88
 HU2167.geopotential number by the normal gravity value computed on the
 HU2167.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2167.degrees latitude (g = 980.6199 gals.).
 HU2167
 HU2167.The modeled gravity was interpolated from observed gravity values.
 HU2167
 HU2167;                    North         East    Units  Estimated Accuracy
 HU2167;SPC MD       -    79,053.      508,168.      MT  (+/- 10 meters HH2 GPS)
 HU2167
 HU2167_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3342547390(NAD 83)
 HU2167
 HU2167                          SUPERSEDED SURVEY CONTROL
 HU2167
 HU2167  NGVD 29 (06/12/91)    3.584  (m)           11.76   (f) ADJUSTED    2 1
 HU2167
 HU2167.Superseded values are not recommended for survey control.
 HU2167
 HU2167.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2167.See file dsdata.pdf to determine how the superseded data were derived.
 HU2167
 HU2167_MARKER: F = FLANGE-ENCASED ROD
 HU2167_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2167_STAMPING: D 180 1990
 HU2167_MARK LOGO: NGS
 HU2167_PROJECTION: RECESSED 2 CENTIMETERS
 HU2167_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2167_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2167_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2167+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2167_ROD/PIPE-DEPTH: 17.1 meters
 HU2167_SLEEVE-DEPTH  : 0.9 meters
 HU2167
 HU2167  HISTORY     - Date     Condition        Report By
 HU2167  HISTORY     - 1990     MONUMENTED       NGS
 HU2167  HISTORY     - 20010827 GOOD             MDSHA
 HU2167  HISTORY     - 20190423 GOOD             PROFLN
 HU2167
 HU2167                          STATION DESCRIPTION
 HU2167
 HU2167'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2167'1.8 KM (1.12 MI) NORTHWESTERLY ALONG CHERRY WALK ROAD FROM THE
 HU2167'JUNCTION OF STATE HIGHWAY 347 IN QUANTICO, 8.5 M (27.89 FT) SOUTHWEST
 HU2167'OF THE CENTER OF THE ROAD, 0.9 M (2.95 FT) WEST OF A UTILITY POLE,
 HU2167'0.6 M (1.97 FT) WEST OF A WITNESS POST, AND 0.2 M (0.66 FT) BELOW THE
 HU2167'LEVEL OF THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2167'5-INCH LOGO CAP.
 HU2167
 HU2167                          STATION RECOVERY (2001)
 HU2167
 HU2167'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (MRA)
 HU2167'RECOVERED AS DESCRIBED.
 HU2167
 HU2167                          STATION RECOVERY (2019)
 HU2167
 HU2167'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2167'THE MARK IS 5.6 FT (1.7 M) NORTHWEST OF THE NORTHWEST SIDE OF A GREEN
 HU2167'ELECTRIC BOX.  THE LOGO CAP IS FLUSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2455 ***********************************************************************
 HU2455  DESIGNATION -  D 181
 HU2455  PID         -  HU2455
 HU2455  STATE/COUNTY-  MD/WICOMICO
 HU2455  COUNTRY     -  US
 HU2455  USGS QUAD   -  PITTSVILLE (2016)
 HU2455
 HU2455                         *CURRENT SURVEY CONTROL
 HU2455  ______________________________________________________________________
 HU2455* NAD 83(1986) POSITION- 38 23 12.     (N) 075 29 01.     (W)   SCALED
 HU2455* NAVD 88 ORTHO HEIGHT -    17.163 (meters)       56.31  (feet) ADJUSTED
 HU2455  ______________________________________________________________________
 HU2455  GEOID HEIGHT    -        -35.860 (meters)                     GEOID18
 HU2455  DYNAMIC HEIGHT  -         17.152 (meters)       56.27  (feet) COMP
 HU2455  MODELED GRAVITY -    980,006.9   (mgal)                       NAVD 88
 HU2455
 HU2455  VERT ORDER      -  SECOND    CLASS I
 HU2455
 HU2455.The horizontal coordinates were scaled from a map and have
 HU2455.an estimated accuracy of +/- 6 seconds.
 HU2455
 HU2455.The orthometric height was determined by differential leveling and
 HU2455.adjusted by the NATIONAL GEODETIC SURVEY
 HU2455.in June 1991.
 HU2455
 HU2455.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2455.GEOID18 height accuracy estimate available here.
 HU2455
 HU2455.Click photographs - Photos may exist for this station.
 HU2455
 HU2455.The dynamic height is computed by dividing the NAVD 88
 HU2455.geopotential number by the normal gravity value computed on the
 HU2455.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2455.degrees latitude (g = 980.6199 gals.).
 HU2455
 HU2455.The modeled gravity was interpolated from observed gravity values.
 HU2455
 HU2455;                    North         East    Units  Estimated Accuracy
 HU2455;SPC MD       -    81,020.      532,480.      MT  (+/- 180 meters Scaled)
 HU2455
 HU2455_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH577488(NAD 83)
 HU2455
 HU2455                          SUPERSEDED SURVEY CONTROL
 HU2455
 HU2455  NGVD 29 (06/12/91)   17.408  (m)           57.11   (f) ADJUSTED    2 1
 HU2455
 HU2455.Superseded values are not recommended for survey control.
 HU2455
 HU2455.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2455.See file dsdata.pdf to determine how the superseded data were derived.
 HU2455
 HU2455_MARKER: I = METAL ROD
 HU2455_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2455_STAMPING: D 181 1990
 HU2455_MARK LOGO: NGS
 HU2455_PROJECTION: RECESSED 2 CENTIMETERS
 HU2455_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2455_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2455_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2455+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2455_ROD/PIPE-DEPTH: 7.2 meters
 HU2455_SLEEVE-DEPTH  : 0.9 meters
 HU2455
 HU2455  HISTORY     - Date     Condition        Report By
 HU2455  HISTORY     - 1990     MONUMENTED       NGS
 HU2455
 HU2455                          STATION DESCRIPTION
 HU2455
 HU2455'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2455'6.6 KM (4.10 MI) EASTERLY ALONG STATE HIGHWAY 346 FROM THE JUNCTION OF
 HU2455'PHILLIP MORRIS DRIVE IN SALISBURY, 22.1 M (72.51 FT) NORTH-NORTHEAST
 HU2455'OF THE NORTHEAST CORNER OF A HOUSE, 14.4 M (47.24 FT) EAST OF UTILITY
 HU2455'POLE NUMBER 50168 93900, 8.2 M (26.90 FT) SOUTH OF AND LEVEL WITH THE
 HU2455'HIGHWAY CENTERLINE, AND 6.7 M (21.98 FT) WEST OF THE CENTER OF A
 HU2455'DRIVEWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO
 HU2455'CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2374 ***********************************************************************
 HU2374  DESIGNATION -  D 182
 HU2374  PID         -  HU2374
 HU2374  STATE/COUNTY-  MD/WICOMICO
 HU2374  COUNTRY     -  US
 HU2374  USGS QUAD   -  SALISBURY (2016)
 HU2374
 HU2374                         *CURRENT SURVEY CONTROL
 HU2374  ______________________________________________________________________
 HU2374* NAD 83(1986) POSITION- 38 17 45.     (N) 075 34 08.     (W)   SCALED
 HU2374* NAVD 88 ORTHO HEIGHT -    13.349 (meters)       43.80  (feet) ADJUSTED
 HU2374  ______________________________________________________________________
 HU2374  GEOID HEIGHT    -        -35.955 (meters)                     GEOID18
 HU2374  DYNAMIC HEIGHT  -         13.340 (meters)       43.77  (feet) COMP
 HU2374  MODELED GRAVITY -    979,998.0   (mgal)                       NAVD 88
 HU2374
 HU2374  VERT ORDER      -  SECOND    CLASS I
 HU2374
 HU2374.The horizontal coordinates were scaled from a map and have
 HU2374.an estimated accuracy of +/- 6 seconds.
 HU2374
 HU2374.The orthometric height was determined by differential leveling and
 HU2374.adjusted by the NATIONAL GEODETIC SURVEY
 HU2374.in June 1991.
 HU2374
 HU2374.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2374.GEOID18 height accuracy estimate available here.
 HU2374
 HU2374.Click photographs - Photos may exist for this station.
 HU2374
 HU2374.The dynamic height is computed by dividing the NAVD 88
 HU2374.geopotential number by the normal gravity value computed on the
 HU2374.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2374.degrees latitude (g = 980.6199 gals.).
 HU2374
 HU2374.The modeled gravity was interpolated from observed gravity values.
 HU2374
 HU2374;                    North         East    Units  Estimated Accuracy
 HU2374;SPC MD       -    70,820.      525,190.      MT  (+/- 180 meters Scaled)
 HU2374
 HU2374_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH502387(NAD 83)
 HU2374
 HU2374                          SUPERSEDED SURVEY CONTROL
 HU2374
 HU2374  NGVD 29 (06/12/91)   13.602  (m)           44.63   (f) ADJUSTED    2 1
 HU2374
 HU2374.Superseded values are not recommended for survey control.
 HU2374
 HU2374.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2374.See file dsdata.pdf to determine how the superseded data were derived.
 HU2374
 HU2374_MARKER: I = METAL ROD
 HU2374_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2374_STAMPING: D 182 1989
 HU2374_MARK LOGO: NGS
 HU2374_PROJECTION: FLUSH
 HU2374_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2374_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2374_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2374+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HU2374_ROD/PIPE-DEPTH: 21.9 meters
 HU2374_SLEEVE-DEPTH  : 0.9 meters
 HU2374
 HU2374  HISTORY     - Date     Condition        Report By
 HU2374  HISTORY     - 1989     MONUMENTED       NGS
 HU2374
 HU2374                          STATION DESCRIPTION
 HU2374
 HU2374'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU2374'0.9 KM (0.56 MI) NORTHEASTERLY ALONG DIVISION STREET FROM THE JUNCTION
 HU2374'OF U.S. HIGHWAY 13 IN FRUITLAND, THENCE 6.1 KM (3.79 MI)
 HU2374'SOUTHEASTERLY ALONG ST LUKE ROAD, THENCE 1.8 KM (1.12 MI) NORTHERLY
 HU2374'ALONG POCOMOKE ROAD, 22.8 M (74.80 FT) SOUTHEAST OF THE SOUTHEAST
 HU2374'CORNER OF A HOUSE, 11.9 M (39.04 FT) SOUTH OF THE CENTER OF THE
 HU2374'DRIVEWAY, 11.7 M (38.39 FT) WEST OF UTILITY POLE NUMBER 47709 90602,
 HU2374'8.6 M (28.22 FT) WEST OF THE CENTER OF THE ROAD, AND LEVEL WITH THE
 HU2374'ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2329 ***********************************************************************
 HU2329  DESIGNATION -  D 183
 HU2329  PID         -  HU2329
 HU2329  STATE/COUNTY-  MD/WICOMICO
 HU2329  COUNTRY     -  US
 HU2329  USGS QUAD   -  DELMAR (2016)
 HU2329
 HU2329                         *CURRENT SURVEY CONTROL
 HU2329  ______________________________________________________________________
 HU2329* NAD 83(1986) POSITION- 38 25 39.     (N) 075 33 52.     (W)   SCALED
 HU2329* NAVD 88 ORTHO HEIGHT -    14.904 (meters)       48.90  (feet) ADJUSTED
 HU2329  ______________________________________________________________________
 HU2329  GEOID HEIGHT    -        -35.765 (meters)                     GEOID18
 HU2329  DYNAMIC HEIGHT  -         14.895 (meters)       48.87  (feet) COMP
 HU2329  MODELED GRAVITY -    980,010.8   (mgal)                       NAVD 88
 HU2329
 HU2329  VERT ORDER      -  SECOND    CLASS I
 HU2329
 HU2329.The horizontal coordinates were scaled from a map and have
 HU2329.an estimated accuracy of +/- 6 seconds.
 HU2329
 HU2329.The orthometric height was determined by differential leveling and
 HU2329.adjusted by the NATIONAL GEODETIC SURVEY
 HU2329.in June 1991.
 HU2329
 HU2329.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2329.GEOID18 height accuracy estimate available here.
 HU2329
 HU2329.Click photographs - Photos may exist for this station.
 HU2329
 HU2329.The dynamic height is computed by dividing the NAVD 88
 HU2329.geopotential number by the normal gravity value computed on the
 HU2329.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2329.degrees latitude (g = 980.6199 gals.).
 HU2329
 HU2329.The modeled gravity was interpolated from observed gravity values.
 HU2329
 HU2329;                    North         East    Units  Estimated Accuracy
 HU2329;SPC MD       -    85,440.      525,350.      MT  (+/- 180 meters Scaled)
 HU2329
 HU2329_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH507533(NAD 83)
 HU2329
 HU2329                          SUPERSEDED SURVEY CONTROL
 HU2329
 HU2329  NGVD 29 (06/12/91)   15.159  (m)           49.73   (f) ADJUSTED    2 1
 HU2329
 HU2329.Superseded values are not recommended for survey control.
 HU2329
 HU2329.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2329.See file dsdata.pdf to determine how the superseded data were derived.
 HU2329
 HU2329_MARKER: F = FLANGE-ENCASED ROD
 HU2329_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2329_STAMPING: D 183 1990
 HU2329_MARK LOGO: NGS
 HU2329_PROJECTION: RECESSED 5 CENTIMETERS
 HU2329_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2329_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2329_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2329+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2329_ROD/PIPE-DEPTH: 24.4 meters
 HU2329_SLEEVE-DEPTH  : 0.9 meters
 HU2329
 HU2329  HISTORY     - Date     Condition        Report By
 HU2329  HISTORY     - 1990     MONUMENTED       NGS
 HU2329  HISTORY     - 19990719 GOOD             MDSHA
 HU2329
 HU2329                          STATION DESCRIPTION
 HU2329
 HU2329'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2329'3.1 KM (1.93 MI) SOUTHERLY ALONG U.S. HIGHWAY 13 FROM ITS JUNCTION
 HU2329'WITH STATE HIGHWAY 54 IN DELMAR, IN THE MEDIAN OF THE HIGHWAY, 28.0 M
 HU2329'(91.86 FT) NORTH OF THE EXTENDED CENTER OF HOLLY LANE, 26.0 M
 HU2329'(85.30 FT) NORTHWEST OF UTILITY POLE NUMBER 47874 95416, 8.2 M
 HU2329'(26.90 FT) WEST OF THE CENTERLINE OF THE NORTHBOUND LANES OF THE
 HU2329'HIGHWAY, AND 0.2 M (0.66 FT) BELOW THE LEVEL OF THE HIGHWAY.
 HU2329'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2329
 HU2329                          STATION RECOVERY (1999)
 HU2329
 HU2329'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HU2329'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2607 ***********************************************************************
 DJ2607  DESIGNATION -  D 183 RESET
 DJ2607  PID         -  DJ2607
 DJ2607  STATE/COUNTY-  MD/WICOMICO
 DJ2607  COUNTRY     -  US
 DJ2607  USGS QUAD   -  DELMAR (2016)
 DJ2607
 DJ2607                         *CURRENT SURVEY CONTROL
 DJ2607  ______________________________________________________________________
 DJ2607* NAD 83(1986) POSITION- 38 25 40.5    (N) 075 33 53.3    (W)   HD_HELD2
 DJ2607* NAVD 88 ORTHO HEIGHT -    14.897 (meters)       48.87  (feet) ADJUSTED
 DJ2607  ______________________________________________________________________
 DJ2607  GEOID HEIGHT    -        -35.764 (meters)                     GEOID18
 DJ2607  DYNAMIC HEIGHT  -         14.888 (meters)       48.85  (feet) COMP
 DJ2607  MODELED GRAVITY -    980,010.8   (mgal)                       NAVD 88
 DJ2607
 DJ2607  VERT ORDER      -  SECOND    CLASS I
 DJ2607
 DJ2607.The horizontal coordinates were established by autonomous hand held GPS
 DJ2607.observations and have an estimated accuracy of +/- 10 meters.
 DJ2607
 DJ2607.The orthometric height was determined by differential leveling and
 DJ2607.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2607.in October 2007.
 DJ2607
 DJ2607.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2607.GEOID18 height accuracy estimate available here.
 DJ2607
 DJ2607.Click photographs - Photos may exist for this station.
 DJ2607
 DJ2607.The dynamic height is computed by dividing the NAVD 88
 DJ2607.geopotential number by the normal gravity value computed on the
 DJ2607.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2607.degrees latitude (g = 980.6199 gals.).
 DJ2607
 DJ2607.The modeled gravity was interpolated from observed gravity values.
 DJ2607
 DJ2607;                    North         East    Units  Estimated Accuracy
 DJ2607;SPC MD       -    85,487.      525,313.      MT  (+/- 10 meters HH2 GPS)
 DJ2607
 DJ2607_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5070053446(NAD 83)
 DJ2607
 DJ2607                          SUPERSEDED SURVEY CONTROL
 DJ2607
 DJ2607.No superseded survey control is available for this station.
 DJ2607
 DJ2607_MARKER: DD = SURVEY DISK
 DJ2607_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ2607_STAMPING: D 183 RESET
 DJ2607_MARK LOGO: MDSHA
 DJ2607_PROJECTION: FLUSH
 DJ2607_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DJ2607_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ2607+STABILITY: SURFACE MOTION
 DJ2607_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ2607+SATELLITE: SATELLITE OBSERVATIONS - 1999
 DJ2607
 DJ2607  HISTORY     - Date     Condition        Report By
 DJ2607  HISTORY     - 1999     MONUMENTED       MDSHA
 DJ2607
 DJ2607                          STATION DESCRIPTION
 DJ2607
 DJ2607'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999
 DJ2607'THE MARK IS LOCATED ABOUT 6.7 MI (10.8 KM) EAST OF HEBRON, 5.0 MI (8.1
 DJ2607'KM) NORTH-NORTHEAST OF SALISBURY AND 2.0 MI (3.2 KM) SOUTH-SOUTHEAST
 DJ2607'OF DELMAR.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DJ2607'
 DJ2607'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 13 AND STATE HIGHWAY 54
 DJ2607'IN DELMAR, GO SOUTH ON U.S. 13 FOR 1.93 MI (3.1 KM) TO THE MARK ON THE
 DJ2607'RIGHT.
 DJ2607'
 DJ2607'IT IS 32.3 FT (9.8 M) WEST OF THE CENTERLINE OF THE SOUTHBOUND LANES
 DJ2607'OF THE HIGHWAY, 204.1 FT (62.2 M) EAST OF A POWER POLE NUMBER DP AND L
 DJ2607'47837-95409, 97.2 FT (29.6 M) SOUTH OF A METAL LIGHT POLE, 90.4 FT
 DJ2607'(27.6 M) NORTH OF THE EAST METAL SUPPORT BEAM FOR A TRAFFIC SIGN
 DJ2607'(TRUCK WEIGH STATION), 2.1 FT (0.6 M) EAST OF A CARSONITE WITNESS POST
 DJ2607'AND SET IN THE TOP OF A 12-INCH (30 CM) ROUND CONCRETE POST ABOUT 1.8
 DJ2607'FT (0.5 M) LOWER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2291 ***********************************************************************
 HU2291  DESIGNATION -  D 184
 HU2291  PID         -  HU2291
 HU2291  STATE/COUNTY-  MD/WICOMICO
 HU2291  COUNTRY     -  US
 HU2291  USGS QUAD   -  EDEN (2016)
 HU2291
 HU2291                         *CURRENT SURVEY CONTROL
 HU2291  ______________________________________________________________________
 HU2291* NAD 83(1986) POSITION- 38 21 15.     (N) 075 40 53.     (W)   SCALED
 HU2291* NAVD 88 ORTHO HEIGHT -     6.726 (meters)       22.07  (feet) ADJUSTED
 HU2291  ______________________________________________________________________
 HU2291  GEOID HEIGHT    -        -35.780 (meters)                     GEOID18
 HU2291  DYNAMIC HEIGHT  -          6.722 (meters)       22.05  (feet) COMP
 HU2291  MODELED GRAVITY -    980,004.6   (mgal)                       NAVD 88
 HU2291
 HU2291  VERT ORDER      -  SECOND    CLASS I
 HU2291
 HU2291.The horizontal coordinates were scaled from a map and have
 HU2291.an estimated accuracy of +/- 6 seconds.
 HU2291
 HU2291.The orthometric height was determined by differential leveling and
 HU2291.adjusted by the NATIONAL GEODETIC SURVEY
 HU2291.in June 1991.
 HU2291
 HU2291.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2291.GEOID18 height accuracy estimate available here.
 HU2291
 HU2291.Click photographs - Photos may exist for this station.
 HU2291
 HU2291.The dynamic height is computed by dividing the NAVD 88
 HU2291.geopotential number by the normal gravity value computed on the
 HU2291.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2291.degrees latitude (g = 980.6199 gals.).
 HU2291
 HU2291.The modeled gravity was interpolated from observed gravity values.
 HU2291
 HU2291;                    North         East    Units  Estimated Accuracy
 HU2291;SPC MD       -    77,150.      515,250.      MT  (+/- 180 meters Scaled)
 HU2291
 HU2291_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH404453(NAD 83)
 HU2291
 HU2291                          SUPERSEDED SURVEY CONTROL
 HU2291
 HU2291  NGVD 29 (06/12/91)    6.978  (m)           22.89   (f) ADJUSTED    2 1
 HU2291
 HU2291.Superseded values are not recommended for survey control.
 HU2291
 HU2291.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2291.See file dsdata.pdf to determine how the superseded data were derived.
 HU2291
 HU2291_MARKER: I = METAL ROD
 HU2291_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2291_STAMPING: D 184 1990
 HU2291_MARK LOGO: NGS
 HU2291_PROJECTION: RECESSED 2 CENTIMETERS
 HU2291_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2291_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2291_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2291+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2291_ROD/PIPE-DEPTH: 18.7 meters
 HU2291_SLEEVE-DEPTH  : 0.9 meters
 HU2291
 HU2291  HISTORY     - Date     Condition        Report By
 HU2291  HISTORY     - 1990     MONUMENTED       NGS
 HU2291
 HU2291                          STATION DESCRIPTION
 HU2291
 HU2291'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2291'6.5 KM (4.04 MI) SOUTHEASTERLY ALONG PEMBERTON DRIVE FROM THE
 HU2291'JUNCTION OF ELLEGOOD STREET IN SALISBURY, IN THE MEDIAN OF ROYAL MILE
 HU2291'BOULEVARD, 20.0 M (65.62 FT) SOUTH OF THE CENTER OF THE DRIVE, 10.8 M
 HU2291'(35.43 FT) EAST OF THE CENTER OF THE SOUTHBOUND LANES OF THE
 HU2291'BOULEVARD, 10.6 M (34.78 FT) WEST OF THE CENTER OF THE NORTHBOUND
 HU2291'LANES OF THE BOULEVARD, AND LEVEL WITH THE DRIVE.  NOTE--ACCESS TO
 HU2291'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2239 ***********************************************************************
 HU2239  DESIGNATION -  D 185
 HU2239  PID         -  HU2239
 HU2239  STATE/COUNTY-  MD/WICOMICO
 HU2239  COUNTRY     -  US
 HU2239  USGS QUAD   -  EDEN (2016)
 HU2239
 HU2239                         *CURRENT SURVEY CONTROL
 HU2239  ______________________________________________________________________
 HU2239* NAD 83(1986) POSITION- 38 22 24.     (N) 075 41 37.     (W)   SCALED
 HU2239* NAVD 88 ORTHO HEIGHT -     9.510 (meters)       31.20  (feet) ADJUSTED
 HU2239  ______________________________________________________________________
 HU2239  GEOID HEIGHT    -        -35.738 (meters)                     GEOID18
 HU2239  DYNAMIC HEIGHT  -          9.504 (meters)       31.18  (feet) COMP
 HU2239  MODELED GRAVITY -    980,006.9   (mgal)                       NAVD 88
 HU2239
 HU2239  VERT ORDER      -  SECOND    CLASS I
 HU2239
 HU2239.The horizontal coordinates were scaled from a map and have
 HU2239.an estimated accuracy of +/- 6 seconds.
 HU2239
 HU2239.The orthometric height was determined by differential leveling and
 HU2239.adjusted by the NATIONAL GEODETIC SURVEY
 HU2239.in June 1991.
 HU2239
 HU2239.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2239.GEOID18 height accuracy estimate available here.
 HU2239
 HU2239.Click photographs - Photos may exist for this station.
 HU2239
 HU2239.The dynamic height is computed by dividing the NAVD 88
 HU2239.geopotential number by the normal gravity value computed on the
 HU2239.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2239.degrees latitude (g = 980.6199 gals.).
 HU2239
 HU2239.The modeled gravity was interpolated from observed gravity values.
 HU2239
 HU2239;                    North         East    Units  Estimated Accuracy
 HU2239;SPC MD       -    79,260.      514,150.      MT  (+/- 180 meters Scaled)
 HU2239
 HU2239_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH394474(NAD 83)
 HU2239
 HU2239                          SUPERSEDED SURVEY CONTROL
 HU2239
 HU2239  NGVD 29 (06/12/91)    9.760  (m)           32.02   (f) ADJUSTED    2 1
 HU2239
 HU2239.Superseded values are not recommended for survey control.
 HU2239
 HU2239.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2239.See file dsdata.pdf to determine how the superseded data were derived.
 HU2239
 HU2239_STAMPING: D 185 1990
 HU2239_MARK LOGO: NGS
 HU2239_PROJECTION: RECESSED 5 CENTIMETERS
 HU2239_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2239+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2239_ROD/PIPE-DEPTH: 21.3 meters
 HU2239_SLEEVE-DEPTH  : 0.9 meters
 HU2239
 HU2239  HISTORY     - Date     Condition        Report By
 HU2239  HISTORY     - 1990     MONUMENTED       NGS
 HU2239  HISTORY     - 20190516 MARK NOT FOUND   PROFLN
 HU2239
 HU2239                          STATION DESCRIPTION
 HU2239
 HU2239'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2239'2.2 KM (1.37 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU2239'ROAD) FROM THE JUNCTION OF RAILROAD AVENUE IN HEBRON, THENCE 0.7 KM
 HU2239'(0.43 MI) SOUTHEASTERLY ALONG QUANTICO CREEK ROAD, THENCE 3.3 KM
 HU2239'(2.05 MI) SOUTHEASTERLY ALONG FIRE TOWER ROAD, 17.3 M (56.76 FT) EAST
 HU2239'OF A UTILITY POLE, 5.2 M (17.06 FT) SOUTHEAST OF THE CENTER OF THE
 HU2239'ROAD, 3.3 M (10.83 FT) SOUTH OF THE CENTER OF A DRIVEWAY, 0.5 M (1.64
 HU2239'FT) WEST OF THE WEST END OF A FENCE LINE AND WITNESS POST, AND LEVEL
 HU2239'WITH THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 HU2239'LOGO CAP.
 HU2239
 HU2239                          STATION RECOVERY (2019)
 HU2239
 HU2239'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2239'SEARCHED FOR, NOT FOUND, POSSIBLY GRADED OUT.  THE POLE, FENCE LINE
 HU2239'AND WITNESS POST ARE ALL GONE.  THE ONLY OBJECTS TO MEASURE FROM TODAY
 HU2239'THAT WERE PRESENT IN 1990 ARE THE ROAD AND THE DRIVEWAY.  ON THAT
 HU2239'SKIMPY BASIS, THE MARK FALLS IN HARD-PACKED GRAVEL IN THE APRON OF THE
 HU2239'DRIVEWAY.  TOO HARD TO DIG AND TOO MANY POSSIBLY FALSE POSITIVES
 HU2239'IDENTIFIED BY THE METAL DETECTOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2137 ***********************************************************************
 HU2137  DESIGNATION -  D 186
 HU2137  PID         -  HU2137
 HU2137  STATE/COUNTY-  MD/WICOMICO
 HU2137  COUNTRY     -  US
 HU2137  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2137
 HU2137                         *CURRENT SURVEY CONTROL
 HU2137  ______________________________________________________________________
 HU2137* NAD 83(1986) POSITION- 38 29 46.6    (N) 075 45 52.7    (W)   HD_HELD2
 HU2137* NAVD 88 ORTHO HEIGHT -     3.766 (meters)       12.36  (feet) ADJUSTED
 HU2137  ______________________________________________________________________
 HU2137  GEOID HEIGHT    -        -35.543 (meters)                     GEOID18
 HU2137  DYNAMIC HEIGHT  -          3.764 (meters)       12.35  (feet) COMP
 HU2137  MODELED GRAVITY -    980,016.0   (mgal)                       NAVD 88
 HU2137
 HU2137  VERT ORDER      -  SECOND    CLASS I
 HU2137
 HU2137.The horizontal coordinates were established by autonomous hand held GPS
 HU2137.observations and have an estimated accuracy of +/- 10 meters.
 HU2137
 HU2137.The orthometric height was determined by differential leveling and
 HU2137.adjusted by the NATIONAL GEODETIC SURVEY
 HU2137.in June 1991.
 HU2137
 HU2137.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2137.GEOID18 height accuracy estimate available here.
 HU2137
 HU2137.Click photographs - Photos may exist for this station.
 HU2137
 HU2137.The dynamic height is computed by dividing the NAVD 88
 HU2137.geopotential number by the normal gravity value computed on the
 HU2137.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2137.degrees latitude (g = 980.6199 gals.).
 HU2137
 HU2137.The modeled gravity was interpolated from observed gravity values.
 HU2137
 HU2137;                    North         East    Units  Estimated Accuracy
 HU2137;SPC MD       -    92,819.      507,763.      MT  (+/- 10 meters HH2 GPS)
 HU2137
 HU2137_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3332161157(NAD 83)
 HU2137
 HU2137                          SUPERSEDED SURVEY CONTROL
 HU2137
 HU2137  NGVD 29 (06/12/91)    4.011  (m)           13.16   (f) ADJUSTED    2 1
 HU2137
 HU2137.Superseded values are not recommended for survey control.
 HU2137
 HU2137.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2137.See file dsdata.pdf to determine how the superseded data were derived.
 HU2137
 HU2137_MARKER: F = FLANGE-ENCASED ROD
 HU2137_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2137_STAMPING: D 186 1990
 HU2137_MARK LOGO: NGS
 HU2137_PROJECTION: RECESSED 12 CENTIMETERS
 HU2137_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2137_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2137+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2017
 HU2137_ROD/PIPE-DEPTH: 20.6 meters
 HU2137_SLEEVE-DEPTH  : 0.9 meters
 HU2137
 HU2137  HISTORY     - Date     Condition        Report By
 HU2137  HISTORY     - 1990     MONUMENTED       NGS
 HU2137  HISTORY     - 20170329 GOOD             PROFLN
 HU2137
 HU2137                          STATION DESCRIPTION
 HU2137
 HU2137'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2137'5.0 KM (3.11 MI) NORTHERLY ALONG STATE HIGHWAY 313 FROM THE JUNCTION
 HU2137'OF STATE HIGHWAY 54 IN MARDELA SPRINGS, THENCE 3.2 KM (1.99 MI)
 HU2137'SOUTHWESTERLY ALONG STATE HIGHWAY 460 (RIVERTON ROAD), 0.5 KM (0.31
 HU2137'MI) SOUTHWEST OF THE INTERSECTION OF SCOTT BENNETT ROAD, 27.3 M
 HU2137'(89.57 FT) SOUTHWEST OF THE CENTER OF A DRIVEWAY, 24.2 M (79.40 FT)
 HU2137'SOUTH OF UTILITY POLE NUMBER 42159 97954, 8.8 M (28.87 FT) WEST OF
 HU2137'THE SOUTHWEST CORNER OF A HOUSE, 7.3 M (23.95 FT) SOUTHEAST OF THE
 HU2137'CENTER OF THE HIGHWAY, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO
 HU2137'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2137'PROPERTY OWNED BY MR R. L. PARSON, RT 1 BOX 103, MARDELA SPRINGS,
 HU2137'MD 21837, TELEPHONE NUMBER (301) 883-3288.
 HU2137
 HU2137                          STATION RECOVERY (2017)
 HU2137
 HU2137'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2137'RECOVERED AS DESCRIBED.  ADDITIONAL TIES ARE 34 FT (10.4 M) NORTHEAST
 HU2137'OF THE SOUTHWEST LINE EXTENDED OF 1-STORY FRAME HOUSE 10985, ABOUT
 HU2137'OPPOSITE THE FRONT DOOR, 24.5 FT (7.5 M) SOUTH OF A BURIED CABLE
 HU2137'PEDESTAL.  LOGO CAP IS 0.2 FT (6 CM) BELOW GROUND, MARK IS 0.4 FT (12
 HU2137'CM) BELOW GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2255 ***********************************************************************
 HU2255  DESIGNATION -  D 187
 HU2255  PID         -  HU2255
 HU2255  STATE/COUNTY-  MD/WICOMICO
 HU2255  COUNTRY     -  US
 HU2255  USGS QUAD   -  WETIPQUIN (2016)
 HU2255
 HU2255                         *CURRENT SURVEY CONTROL
 HU2255  ______________________________________________________________________
 HU2255* NAD 83(1986) POSITION- 38 20 01.7    (N) 075 49 24.0    (W)   HD_HELD2
 HU2255* NAVD 88 ORTHO HEIGHT -     3.328 (meters)       10.92  (feet) ADJUSTED
 HU2255  ______________________________________________________________________
 HU2255  GEOID HEIGHT    -        -35.711 (meters)                     GEOID18
 HU2255  DYNAMIC HEIGHT  -          3.326 (meters)       10.91  (feet) COMP
 HU2255  MODELED GRAVITY -    979,999.5   (mgal)                       NAVD 88
 HU2255
 HU2255  VERT ORDER      -  SECOND    CLASS I
 HU2255
 HU2255.The horizontal coordinates were established by autonomous hand held GPS
 HU2255.observations and have an estimated accuracy of +/- 10 meters.
 HU2255
 HU2255.The orthometric height was determined by differential leveling and
 HU2255.adjusted by the NATIONAL GEODETIC SURVEY
 HU2255.in June 1991.
 HU2255
 HU2255.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2255.GEOID18 height accuracy estimate available here.
 HU2255
 HU2255.Click photographs - Photos may exist for this station.
 HU2255
 HU2255.The dynamic height is computed by dividing the NAVD 88
 HU2255.geopotential number by the normal gravity value computed on the
 HU2255.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2255.degrees latitude (g = 980.6199 gals.).
 HU2255
 HU2255.The modeled gravity was interpolated from observed gravity values.
 HU2255
 HU2255;                    North         East    Units  Estimated Accuracy
 HU2255;SPC MD       -    74,718.      502,876.      MT  (+/- 10 meters HH2 GPS)
 HU2255
 HU2255_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2804143173(NAD 83)
 HU2255
 HU2255                          SUPERSEDED SURVEY CONTROL
 HU2255
 HU2255  NGVD 29 (06/12/91)    3.582  (m)           11.75   (f) ADJUSTED    2 1
 HU2255
 HU2255.Superseded values are not recommended for survey control.
 HU2255
 HU2255.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2255.See file dsdata.pdf to determine how the superseded data were derived.
 HU2255
 HU2255_MARKER: F = FLANGE-ENCASED ROD
 HU2255_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2255_STAMPING: D 187 1990
 HU2255_MARK LOGO: NGS
 HU2255_PROJECTION: RECESSED 2 CENTIMETERS
 HU2255_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2255_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2255_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2255+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2019
 HU2255_ROD/PIPE-DEPTH: 12.1 meters
 HU2255_SLEEVE-DEPTH  : 0.9 meters
 HU2255
 HU2255  HISTORY     - Date     Condition        Report By
 HU2255  HISTORY     - 1990     MONUMENTED       NGS
 HU2255  HISTORY     - 20190519 SEE DESCRIPTION  PROFLN
 HU2255
 HU2255                          STATION DESCRIPTION
 HU2255
 HU2255'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2255'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2255'OFFICE IN QUANTICO, THENCE 7.8 KM (4.85 MI) WESTERLY ALONG STATE
 HU2255'HIGHWAY 349, THENCE 1.2 KM (0.75 MI) WESTERLY ALONG STATE HIGHWAY
 HU2255'478, 33.8 M (110.89 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF AN
 HU2255'ABANDONED HOUSE, 18.7 M (61.35 FT) EAST OF THE CENTER OF A FIELD
 HU2255'ENTRANCE, 4.9 M (16.08 FT) SOUTH OF AND LEVEL WITH THE ROAD CENTER,
 HU2255'0.9 M (2.95 FT) WEST OF UTILITY POLE NUMBER 92, AND 0.3 M (0.98 FT)
 HU2255'NORTH OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH
 HU2255'A 5-INCH LOGO CAP.
 HU2255
 HU2255                          STATION RECOVERY (2019)
 HU2255
 HU2255'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2255'THE MARK IS 170 FT (51.8 M) WEST-NORTHWEST FROM A POINT OPPOSITE A BIG
 HU2255'LONE CEDAR TREE GROWING RIGHT NEXT TO THE NORTH SIDE OF THE ROAD,
 HU2255'121.5 FT (37.0 M) EAST-SOUTHEAST AT AN ACUTE ANGLE CROSSING THE ROAD
 HU2255'FROM POLE 712 59 19 AT AN ANGLE POINT IN THE POWER LINE, 89 FT (27.1
 HU2255'M) WEST OR WEST-SOUTHWEST AT AN ACUTE ANGLE FROM ANOTHER POLE ACROSS
 HU2255'THE ROAD, 712 52 193 AND AT THE EAST END OF A CURVE.  THE RIM OR
 HU2255'COLLAR IS FLUSH.  THE LOGO CAP IS MISSING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2400 ***********************************************************************
 HU2400  DESIGNATION -  D 188
 HU2400  PID         -  HU2400
 HU2400  STATE/COUNTY-  MD/WICOMICO
 HU2400  COUNTRY     -  US
 HU2400  USGS QUAD   -  DELMAR (2016)
 HU2400
 HU2400                         *CURRENT SURVEY CONTROL
 HU2400  ______________________________________________________________________
 HU2400* NAD 83(1986) POSITION- 38 25 00.     (N) 075 30 23.     (W)   SCALED
 HU2400* NAVD 88 ORTHO HEIGHT -    17.120 (meters)       56.17  (feet) ADJUSTED
 HU2400  ______________________________________________________________________
 HU2400  GEOID HEIGHT    -        -35.808 (meters)                     GEOID18
 HU2400  DYNAMIC HEIGHT  -         17.109 (meters)       56.13  (feet) COMP
 HU2400  MODELED GRAVITY -    980,009.7   (mgal)                       NAVD 88
 HU2400
 HU2400  VERT ORDER      -  SECOND    CLASS I
 HU2400
 HU2400.The horizontal coordinates were scaled from a map and have
 HU2400.an estimated accuracy of +/- 6 seconds.
 HU2400
 HU2400.The orthometric height was determined by differential leveling and
 HU2400.adjusted by the NATIONAL GEODETIC SURVEY
 HU2400.in June 1991.
 HU2400
 HU2400.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2400.GEOID18 height accuracy estimate available here.
 HU2400
 HU2400.Click photographs - Photos may exist for this station.
 HU2400
 HU2400.The dynamic height is computed by dividing the NAVD 88
 HU2400.geopotential number by the normal gravity value computed on the
 HU2400.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2400.degrees latitude (g = 980.6199 gals.).
 HU2400
 HU2400.The modeled gravity was interpolated from observed gravity values.
 HU2400
 HU2400;                    North         East    Units  Estimated Accuracy
 HU2400;SPC MD       -    84,320.      530,430.      MT  (+/- 180 meters Scaled)
 HU2400
 HU2400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH557521(NAD 83)
 HU2400
 HU2400                          SUPERSEDED SURVEY CONTROL
 HU2400
 HU2400  NGVD 29 (06/12/91)   17.370  (m)           56.99   (f) ADJUSTED    2 1
 HU2400
 HU2400.Superseded values are not recommended for survey control.
 HU2400
 HU2400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2400.See file dsdata.pdf to determine how the superseded data were derived.
 HU2400
 HU2400_MARKER: I = METAL ROD
 HU2400_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2400_STAMPING: D 188 1990
 HU2400_MARK LOGO: NGS
 HU2400_PROJECTION: RECESSED 2 CENTIMETERS
 HU2400_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2400_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2400_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2400+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2400_ROD/PIPE-DEPTH: 26.7 meters
 HU2400_SLEEVE-DEPTH  : 0.9 meters
 HU2400
 HU2400  HISTORY     - Date     Condition        Report By
 HU2400  HISTORY     - 1990     MONUMENTED       NGS
 HU2400
 HU2400                          STATION DESCRIPTION
 HU2400
 HU2400'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2400'6.2 KM (3.85 MI) EASTERLY ALONG ZION ROAD FROM THE JUNCTION OF U.S.
 HU2400'HIGHWAY 13 BUSINESS IN SALISBURY, THENCE 0.8 KM (0.50 MI) EASTERLY
 HU2400'ALONG DAGSBORO ROAD, THENCE 0.3 KM (0.19 MI) NORTHEASTERLY ALONG
 HU2400'DOWNING ROAD, 25.5 M (83.66 FT) NORTHWEST OF THE NORTHWEST CORNER OF
 HU2400'A HOUSE, 13.1 M (42.98 FT) EAST OF AND LEVEL WITH THE CENTER OF THE
 HU2400'ROAD, 8.9 M (29.20 FT) NORTHEAST OF THE SOUTH END OF A METAL DRAIN
 HU2400'PIPE, AND 7.2 M (23.62 FT) SOUTH OF THE CENTER OF PEMBROKE COURT.
 HU2400'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2548 ***********************************************************************
 HU2548  DESIGNATION -  D 189
 HU2548  PID         -  HU2548
 HU2548  STATE/COUNTY-  MD/WICOMICO
 HU2548  COUNTRY     -  US
 HU2548  USGS QUAD   -  PITTSVILLE (2016)
 HU2548
 HU2548                         *CURRENT SURVEY CONTROL
 HU2548  ______________________________________________________________________
 HU2548* NAD 83(1986) POSITION- 38 25 08.     (N) 075 26 18.     (W)   SCALED
 HU2548* NAVD 88 ORTHO HEIGHT -    20.921 (meters)       68.64  (feet) ADJUSTED
 HU2548  ______________________________________________________________________
 HU2548  GEOID HEIGHT    -        -35.844 (meters)                     GEOID18
 HU2548  DYNAMIC HEIGHT  -         20.908 (meters)       68.60  (feet) COMP
 HU2548  MODELED GRAVITY -    980,009.8   (mgal)                       NAVD 88
 HU2548
 HU2548  VERT ORDER      -  SECOND    CLASS I
 HU2548
 HU2548.The horizontal coordinates were scaled from a map and have
 HU2548.an estimated accuracy of +/- 6 seconds.
 HU2548
 HU2548.The orthometric height was determined by differential leveling and
 HU2548.adjusted by the NATIONAL GEODETIC SURVEY
 HU2548.in June 1991.
 HU2548
 HU2548.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2548.GEOID18 height accuracy estimate available here.
 HU2548
 HU2548.Click photographs - Photos may exist for this station.
 HU2548
 HU2548.The dynamic height is computed by dividing the NAVD 88
 HU2548.geopotential number by the normal gravity value computed on the
 HU2548.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2548.degrees latitude (g = 980.6199 gals.).
 HU2548
 HU2548.The modeled gravity was interpolated from observed gravity values.
 HU2548
 HU2548;                    North         East    Units  Estimated Accuracy
 HU2548;SPC MD       -    84,670.      536,370.      MT  (+/- 180 meters Scaled)
 HU2548
 HU2548_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH617523(NAD 83)
 HU2548
 HU2548                          SUPERSEDED SURVEY CONTROL
 HU2548
 HU2548  NGVD 29 (06/12/91)   21.168  (m)           69.45   (f) ADJUSTED    2 1
 HU2548
 HU2548.Superseded values are not recommended for survey control.
 HU2548
 HU2548.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2548.See file dsdata.pdf to determine how the superseded data were derived.
 HU2548
 HU2548_MARKER: I = METAL ROD
 HU2548_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2548_STAMPING: D 189 1990
 HU2548_MARK LOGO: NGS
 HU2548_PROJECTION: RECESSED 2 CENTIMETERS
 HU2548_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2548_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2548_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2548+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2548_ROD/PIPE-DEPTH: 10.9 meters
 HU2548_SLEEVE-DEPTH  : 0.9 meters
 HU2548
 HU2548  HISTORY     - Date     Condition        Report By
 HU2548  HISTORY     - 1990     MONUMENTED       NGS
 HU2548
 HU2548                          STATION DESCRIPTION
 HU2548
 HU2548'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2548'2.9 KM (1.80 MI) NORTHWESTERLY ALONG PITTSVILLE ROAD FROM THE JUNCTION
 HU2548'OF STATE HIGHWAY 353 (PITTSVILLE DELAWARE ROAD) IN PITTSVILLE, 20.6 M
 HU2548'(67.59 FT) NORTHWEST OF THE CENTER OF BOB SMITH ROAD, 17.0 M
 HU2548'(55.77 FT) NORTH-NORTHEAST OF UTILITY PEDESTAL NUMBER 17, 16.3 M
 HU2548'(53.48 FT) NORTHEAST OF THE NORTHEAST CORNER OF A HOUSE, AND 6.9 M
 HU2548'(22.64 FT) SOUTHWEST OF AND LEVEL WITH THE ROAD CENTER.  NOTE--ACCESS
 HU2548'TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2548'PROPERTY OWNED BY MR. JOHN CORDREY, P.O. BOX 143, PARSONSBURG, MD
 HU2548'21849, TELEPHONE NUMBER (301) 835-8805.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2389 ***********************************************************************
 HU2389  DESIGNATION -  D 190
 HU2389  PID         -  HU2389
 HU2389  STATE/COUNTY-  MD/WICOMICO
 HU2389  COUNTRY     -  US
 HU2389  USGS QUAD   -  WANGO (2016)
 HU2389
 HU2389                         *CURRENT SURVEY CONTROL
 HU2389  ______________________________________________________________________
 HU2389* NAD 83(1986) POSITION- 38 17 49.     (N) 075 23 06.     (W)   SCALED
 HU2389* NAVD 88 ORTHO HEIGHT -    10.534 (meters)       34.56  (feet) ADJUSTED
 HU2389  ______________________________________________________________________
 HU2389  GEOID HEIGHT    -        -36.033 (meters)                     GEOID18
 HU2389  DYNAMIC HEIGHT  -         10.528 (meters)       34.54  (feet) COMP
 HU2389  MODELED GRAVITY -    979,998.5   (mgal)                       NAVD 88
 HU2389
 HU2389  VERT ORDER      -  SECOND    CLASS I
 HU2389
 HU2389.The horizontal coordinates were scaled from a map and have
 HU2389.an estimated accuracy of +/- 6 seconds.
 HU2389
 HU2389.The orthometric height was determined by differential leveling and
 HU2389.adjusted by the NATIONAL GEODETIC SURVEY
 HU2389.in June 1991.
 HU2389
 HU2389.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2389.GEOID18 height accuracy estimate available here.
 HU2389
 HU2389.Click photographs - Photos may exist for this station.
 HU2389
 HU2389.The dynamic height is computed by dividing the NAVD 88
 HU2389.geopotential number by the normal gravity value computed on the
 HU2389.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2389.degrees latitude (g = 980.6199 gals.).
 HU2389
 HU2389.The modeled gravity was interpolated from observed gravity values.
 HU2389
 HU2389;                    North         East    Units  Estimated Accuracy
 HU2389;SPC MD       -    71,210.      541,270.      MT  (+/- 180 meters Scaled)
 HU2389
 HU2389_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH663388(NAD 83)
 HU2389
 HU2389                          SUPERSEDED SURVEY CONTROL
 HU2389
 HU2389  NGVD 29 (06/12/91)   10.786  (m)           35.39   (f) ADJUSTED    2 1
 HU2389
 HU2389.Superseded values are not recommended for survey control.
 HU2389
 HU2389.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2389.See file dsdata.pdf to determine how the superseded data were derived.
 HU2389
 HU2389_MARKER: I = METAL ROD
 HU2389_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2389_STAMPING: D 190 1990
 HU2389_MARK LOGO: NGS
 HU2389_PROJECTION: RECESSED 2 CENTIMETERS
 HU2389_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2389_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2389_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2389+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2389_ROD/PIPE-DEPTH: 25.5 meters
 HU2389_SLEEVE-DEPTH  : 0.9 meters
 HU2389
 HU2389  HISTORY     - Date     Condition        Report By
 HU2389  HISTORY     - 1990     MONUMENTED       NGS
 HU2389
 HU2389                          STATION DESCRIPTION
 HU2389
 HU2389'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2389'3.9 KM (2.42 MI) SOUTHERLY ALONG STATE HIGHWAY 354 (WILLARDS WHITON
 HU2389'ROAD) FROM THE JUNCTION OF STATE HIGHWAY 350 (MOUNT HERMON ROAD) IN
 HU2389'POWELLVILLE, THENCE 0.9 KM (0.56 MI) WESTERLY ALONG POWELL SCHOOL
 HU2389'ROAD, 6.1 M (20.01 FT) SOUTHWEST OF AND LEVEL WITH THE CENTER OF THE
 HU2389'ROAD, AND 0.3 M (0.98 FT) NORTHEAST OF A WITNESS POST.  NOTE--ACCESS
 HU2389'TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8787 ***********************************************************************
 HV8787  DESIGNATION -  D 191
 HV8787  PID         -  HV8787
 HV8787  STATE/COUNTY-  MD/CHARLES
 HV8787  COUNTRY     -  US
 HV8787  USGS QUAD   -  PORT TOBACCO (2016)
 HV8787
 HV8787                         *CURRENT SURVEY CONTROL
 HV8787  ______________________________________________________________________
 HV8787* NAD 83(1986) POSITION- 38 30 03.     (N) 077 03 40.     (W)   SCALED
 HV8787* NAVD 88 ORTHO HEIGHT -    48.997 (meters)      160.75  (feet) ADJUSTED
 HV8787  ______________________________________________________________________
 HV8787  GEOID HEIGHT    -        -32.891 (meters)                     GEOID18
 HV8787  DYNAMIC HEIGHT  -         48.967 (meters)      160.65  (feet) COMP
 HV8787  MODELED GRAVITY -    980,035.3   (mgal)                       NAVD 88
 HV8787
 HV8787  VERT ORDER      -  FIRST     CLASS II
 HV8787
 HV8787.The horizontal coordinates were scaled from a map and have
 HV8787.an estimated accuracy of +/- 6 seconds.
 HV8787
 HV8787.The orthometric height was determined by differential leveling and
 HV8787.adjusted by the NATIONAL GEODETIC SURVEY
 HV8787.in June 1991.
 HV8787
 HV8787.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8787.GEOID18 height accuracy estimate available here.
 HV8787
 HV8787.Click photographs - Photos may exist for this station.
 HV8787
 HV8787.The dynamic height is computed by dividing the NAVD 88
 HV8787.geopotential number by the normal gravity value computed on the
 HV8787.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8787.degrees latitude (g = 980.6199 gals.).
 HV8787
 HV8787.The modeled gravity was interpolated from observed gravity values.
 HV8787
 HV8787;                    North         East    Units  Estimated Accuracy
 HV8787;SPC MD       -    92,600.      394,670.      MT  (+/- 180 meters Scaled)
 HV8787
 HV8787_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH202633(NAD 83)
 HV8787
 HV8787                          SUPERSEDED SURVEY CONTROL
 HV8787
 HV8787.No superseded survey control is available for this station.
 HV8787
 HV8787_MARKER: I = METAL ROD
 HV8787_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 HV8787+WITH SETTING: INFORMATION.
 HV8787_STAMPING: D 191 1990
 HV8787_MARK LOGO: NGS
 HV8787_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8787_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8787_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8787+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8787
 HV8787  HISTORY     - Date     Condition        Report By
 HV8787  HISTORY     - 1990     MONUMENTED       NGS
 HV8787
 HV8787                          STATION DESCRIPTION
 HV8787
 HV8787'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8787'7.9 KM (4.91 MI) WESTERLY ALONG STATE HIGHWAY 6 FROM THE JUNCTION OF
 HV8787'U.S. HIGHWAY 301 IN LA PLATA, A METAL ROD DRIVEN 2.4 METERS AND
 HV8787'FLUSH WITH GROUND, 31.4 M (103.02 FT) SOUTHWEST OF THE CENTER OF A
 HV8787'DRIVEWAY, 11.4 M (37.40 FT) SOUTHEAST OF THE CENTERLINE OF THE
 HV8787'HIGHWAY, 1.3 M (4.27 FT) NORTHEAST OF UTILITY POLE NUMBER 65 WITH 3
 HV8787'GUY WIRES, 0.3 M (0.98 FT) NORTHWEST OF A WITNESS POST, AND 0.3 M
 HV8787'(0.98 FT) BELOW THE LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO THE DATUM
 HV8787'POINT IS THROUGH A 5-INCH LOGO CAP.  THE ROD WAS DRIVEN TO REFUSAL
 HV8787'AND ANCHORED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8858 ***********************************************************************
 HV8858  DESIGNATION -  D 192
 HV8858  PID         -  HV8858
 HV8858  STATE/COUNTY-  MD/ST MARYS
 HV8858  COUNTRY     -  US
 HV8858  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV8858
 HV8858                         *CURRENT SURVEY CONTROL
 HV8858  ______________________________________________________________________
 HV8858* NAD 83(1986) POSITION- 38 14 05.     (N) 076 29 14.     (W)   SCALED
 HV8858* NAVD 88 ORTHO HEIGHT -    17.884 (meters)       58.67  (feet) ADJUSTED
 HV8858  ______________________________________________________________________
 HV8858  GEOID HEIGHT    -        -34.472 (meters)                     GEOID18
 HV8858  DYNAMIC HEIGHT  -         17.872 (meters)       58.64  (feet) COMP
 HV8858  MODELED GRAVITY -    980,005.4   (mgal)                       NAVD 88
 HV8858
 HV8858  VERT ORDER      -  SECOND    CLASS II
 HV8858
 HV8858.The horizontal coordinates were scaled from a map and have
 HV8858.an estimated accuracy of +/- 6 seconds.
 HV8858
 HV8858.The orthometric height was determined by differential leveling and
 HV8858.adjusted by the NATIONAL GEODETIC SURVEY
 HV8858.in June 1991.
 HV8858
 HV8858.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8858.GEOID18 height accuracy estimate available here.
 HV8858
 HV8858.Click photographs - Photos may exist for this station.
 HV8858
 HV8858.The dynamic height is computed by dividing the NAVD 88
 HV8858.geopotential number by the normal gravity value computed on the
 HV8858.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8858.degrees latitude (g = 980.6199 gals.).
 HV8858
 HV8858.The modeled gravity was interpolated from observed gravity values.
 HV8858
 HV8858;                    North         East    Units  Estimated Accuracy
 HV8858;SPC MD       -    63,180.      444,900.      MT  (+/- 180 meters Scaled)
 HV8858
 HV8858_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH698329(NAD 83)
 HV8858
 HV8858                          SUPERSEDED SURVEY CONTROL
 HV8858
 HV8858.No superseded survey control is available for this station.
 HV8858
 HV8858_MARKER: DV = VERTICAL CONTROL DISK
 HV8858_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV8858_SP_SET: HEADWALL
 HV8858_STAMPING: D 192 1990
 HV8858_MARK LOGO: NGS
 HV8858_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8858_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8858_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8858+SATELLITE: SATELLITE OBSERVATIONS - February 05, 2014
 HV8858
 HV8858  HISTORY     - Date     Condition        Report By
 HV8858  HISTORY     - 1990     MONUMENTED       NGS
 HV8858  HISTORY     - 19990214 GOOD             USPSQD
 HV8858  HISTORY     - 20050416 GOOD             USPSQD
 HV8858  HISTORY     - 20140205 GOOD             MDSHA
 HV8858
 HV8858                          STATION DESCRIPTION
 HV8858
 HV8858'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8858'0.8 KM (0.5 MI) EASTERLY ALONG STATE HIGHWAY 5 FROM THE JUNCTION OF
 HV8858'STATE HIGHWAY 246 IN GREAT MILLS, IN TOP OF AND 0.2 M (0.7 FT) WEST
 HV8858'OF THE EAST END OF THE SOUTH CONCRETE HEADWALL OF A CULVERT, 11.7 M
 HV8858'(38.4 FT) SOUTHWEST OF THE HIGHWAY CENTERLINE, 1.4 M (4.6 FT) BELOW
 HV8858'THE LEVEL OF THE HIGHWAY, AND 0.5 M (1.6 FT) WEST OF A WITNESS POST.
 HV8858
 HV8858                          STATION RECOVERY (1999)
 HV8858
 HV8858'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV8858'RECOVERED IN GOOD CONDITION.
 HV8858
 HV8858                          STATION RECOVERY (2005)
 HV8858
 HV8858'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPF)
 HV8858'HV8858
 HV8858'
 HV8858'THE DESCRIPTION HAS BEEN MODIFIED TO REFLECT ADDITIONAL REFERENCED
 HV8858'POINTS AND DISTANCES
 HV8858'
 HV8858'THE STATION IS LOCATED ALONG STATE HIGHWAY 5, 0.5 MI (0.8 KM)
 HV8858'SOUTHEASTERLY OF THE INTERSECTION OF STATE HIGHWAYS 5 AND 246 (GREAT
 HV8858'MILLS ROAD).
 HV8858'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 246 AND 5
 HV8858'(LEONARDTOWN POINT LOOKOUT ROAD) AT GREAT MILLS, MD., GO SOUTHEAST ON
 HV8858'STATE HIGHWAY 5 FOR 0.5 MI (0.8 KM) TO STATION ON THE RIGHT.
 HV8858'STATION IS EAST OF ADKINS ROAD AND 250 FT (76.1 M) WESTERLY OF THE
 HV8858'DRIVEWAY CENTERLINE OF THE RESIDENCE AT 19831 STATE HIGHWAY 5.
 HV8858'STATION IS IN TOP OF AND 0.2 M (0.7 FT) WEST OF THE EAST END OF THE
 HV8858'SOUTH CONCRETE HEADWALL OF A CULVERT, 11.7 M (38.4 FT) SOUTHWEST OF
 HV8858'THE HIGHWAY CENTERLINE, 1.4 M (4.6 FT) BELOW THE LEVEL OF THE HIGHWAY,
 HV8858'AND 0.5 M (1.6 FT) WEST OF A WITNESS POST.
 HV8858
 HV8858                          STATION RECOVERY (2014)
 HV8858
 HV8858'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2014 (DLW)
 HV8858'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 UA0007 ***********************************************************************
 UA0007  DESIGNATION -  D 194
 UA0007  PID         -  UA0007
 UA0007  STATE/COUNTY-  MD/QUEEN ANNES
 UA0007  COUNTRY     -  US
 UA0007  USGS QUAD   -  QUEENSTOWN (2016)
 UA0007
 UA0007                         *CURRENT SURVEY CONTROL
 UA0007  ______________________________________________________________________
 UA0007* NAD 83(1986) POSITION- 38 58 10.7    (N) 076 14 32.6    (W)   HD_HELD2
 UA0007* NAVD 88 ORTHO HEIGHT -    14.849 (meters)       48.72  (feet) ADJUSTED
 UA0007  ______________________________________________________________________
 UA0007  GEOID HEIGHT    -        -33.739 (meters)                     GEOID18
 UA0007  DYNAMIC HEIGHT  -         14.841 (meters)       48.69  (feet) COMP
 UA0007  MODELED GRAVITY -    980,078.0   (mgal)                       NAVD 88
 UA0007
 UA0007  VERT ORDER      -  SECOND    CLASS I
 UA0007
 UA0007.The horizontal coordinates were established by autonomous hand held GPS
 UA0007.observations and have an estimated accuracy of +/- 10 meters.
 UA0007
 UA0007.The orthometric height was determined by differential leveling and
 UA0007.adjusted by the NATIONAL GEODETIC SURVEY
 UA0007.in July 1996.
 UA0007
 UA0007.Significant digits in the geoid height do not necessarily reflect accuracy.
 UA0007.GEOID18 height accuracy estimate available here.
 UA0007
 UA0007.Click photographs - Photos may exist for this station.
 UA0007
 UA0007.The dynamic height is computed by dividing the NAVD 88
 UA0007.geopotential number by the normal gravity value computed on the
 UA0007.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 UA0007.degrees latitude (g = 980.6199 gals.).
 UA0007
 UA0007.The modeled gravity was interpolated from observed gravity values.
 UA0007
 UA0007;                    North         East    Units  Estimated Accuracy
 UA0007;SPC MD       -   144,908.      465,653.      MT  (+/- 10 meters HH2 GPS)
 UA0007
 UA0007_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9237114141(NAD 83)
 UA0007
 UA0007                          SUPERSEDED SURVEY CONTROL
 UA0007
 UA0007.No superseded survey control is available for this station.
 UA0007
 UA0007_MARKER: DV = VERTICAL CONTROL DISK
 UA0007_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 UA0007_SP_SET: BRIDGE DECK OVER THE ABUTMENT
 UA0007_STAMPING: D 194 1990
 UA0007_MARK LOGO: NGS
 UA0007_MAGNETIC: O = OTHER; SEE DESCRIPTION
 UA0007_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 UA0007_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 UA0007+SATELLITE: SATELLITE OBSERVATIONS - July 17, 2012
 UA0007
 UA0007  HISTORY     - Date     Condition        Report By
 UA0007  HISTORY     - 1990     MONUMENTED       MDSHA
 UA0007  HISTORY     - 20010318 GOOD             USPSQD
 UA0007  HISTORY     - 20070222 GOOD             USPSQD
 UA0007  HISTORY     - 20120717 GOOD             NGS
 UA0007
 UA0007                          STATION DESCRIPTION
 UA0007
 UA0007'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990 (CAM)
 UA0007'THE MARKER IS LOCATED ABOUT 13.5 MI (21.7 KM) EAST OF ANNAPOLIS, 3 MI
 UA0007'(4.8 KM) EAST OF CHESTER AND 1.5 MI (2.4 KM) NORTHWEST OF GRASONVILLE
 UA0007'AND AT THE SOUTHEAST CORNER OF THE U.S. HIGHWAYS 50 AND 301 EAST BOUND
 UA0007'HIGH BRIDGE OVER KENT NARROWS.  IT ON U.S. HIGHWAYS 50 AND 301
 UA0007'RIGHT-OF-WAY.
 UA0007'
 UA0007'TO REACH FROM THE POST OFFICE IN CHESTER, GO WEST ON OLD STEVENSVILLE
 UA0007'QUEENSTOWN ROAD FOR 0.15 MI (0.24 KM) TO A T-INTERSECTION.  TURN RIGHT
 UA0007'AND GO NORTH ON COX NECK ROAD FOR 0.05 MI (0.08 KM) TO U.S. HIGHWAYS
 UA0007'50 AND 301.  TURN RIGHT AND GO EAST ON U.S. HIGHWAYS 50 AND 301 FOR
 UA0007'2.55 MI (4.10 KM) TO THE EAST END OF THE HIGH BRIDGE OVER KENT NARROWS
 UA0007'AND THE MARKER ON THE RIGHT.  THIS MARKER IS ALSO 5.4 MI (8.7 KM) EAST
 UA0007'ALONG U.S. HIGHWAYS 50 AND 301 FROM THE EAST END OF THE CHESAPEAKE BAY
 UA0007'BRIDGE.
 UA0007'
 UA0007'THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION
 UA0007'SURVEY DISK SET IN A DRILL HOLE IN THE BRIDGE BACKWALL ON THE
 UA0007'ABUTMENT.  IT IS 44.8 FT (13.7 M) SOUTH OF THE CENTER OF THE DUAL
 UA0007'BRIDGES, 1.7 FT (0.5 M) NORTH OF THE BOTTOM OF THE SOUTH PARAPET WALL,
 UA0007'1.4 FT (0.4 M) EAST OF THE MOST EASTERLY EXPANSION JOINT ON THE BRIDGE
 UA0007'AND 12.8 FT (3.9 M) EAST OF THE CENTER OF A DROP INLET FOR DRAINAGE ON
 UA0007'THE BRIDGE.
 UA0007
 UA0007                          STATION RECOVERY (2001)
 UA0007
 UA0007'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKW)
 UA0007'RECOVERED IN GOOD CONDITION.
 UA0007
 UA0007                          STATION RECOVERY (2007)
 UA0007
 UA0007'RECOVERY NOTE BY US POWER SQUADRON 2007 (JKW)
 UA0007'RECOVERED IN GOOD CONDITION.
 UA0007
 UA0007                          STATION RECOVERY (2012)
 UA0007
 UA0007'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRA)
 UA0007'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8921 ***********************************************************************
 HV8921  DESIGNATION -  D 195
 HV8921  PID         -  HV8921
 HV8921  STATE/COUNTY-  MD/DORCHESTER
 HV8921  COUNTRY     -  US
 HV8921  USGS QUAD   -  GOLDEN HILL (2016)
 HV8921
 HV8921                         *CURRENT SURVEY CONTROL
 HV8921  ______________________________________________________________________
 HV8921* NAD 83(1986) POSITION- 38 27 42.9    (N) 076 08 19.5    (W)   HD_HELD2
 HV8921* NAVD 88 ORTHO HEIGHT -     1.359 (meters)        4.46  (feet) ADJUSTED
 HV8921  ______________________________________________________________________
 HV8921  GEOID HEIGHT    -        -35.100 (meters)                     GEOID18
 HV8921  DYNAMIC HEIGHT  -          1.358 (meters)        4.46  (feet) COMP
 HV8921  MODELED GRAVITY -    980,008.0   (mgal)                       NAVD 88
 HV8921
 HV8921  VERT ORDER      -  SECOND    CLASS I
 HV8921
 HV8921.The horizontal coordinates were established by autonomous hand held GPS
 HV8921.observations and have an estimated accuracy of +/- 10 meters.
 HV8921
 HV8921.The orthometric height was determined by differential leveling and
 HV8921.adjusted by the NATIONAL GEODETIC SURVEY
 HV8921.in August 1994.
 HV8921
 HV8921.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8921.GEOID18 height accuracy estimate available here.
 HV8921
 HV8921.Click photographs - Photos may exist for this station.
 HV8921
 HV8921.The dynamic height is computed by dividing the NAVD 88
 HV8921.geopotential number by the normal gravity value computed on the
 HV8921.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8921.degrees latitude (g = 980.6199 gals.).
 HV8921
 HV8921.The modeled gravity was interpolated from observed gravity values.
 HV8921
 HV8921;                    North         East    Units  Estimated Accuracy
 HV8921;SPC MD       -    88,631.      475,166.      MT  (+/- 10 meters HH2 GPS)
 HV8921
 HV8921_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0064957681(NAD 83)
 HV8921
 HV8921                          SUPERSEDED SURVEY CONTROL
 HV8921
 HV8921.No superseded survey control is available for this station.
 HV8921
 HV8921_MARKER: DV = VERTICAL CONTROL DISK
 HV8921_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8921_STAMPING: D 195 1990
 HV8921_MARK LOGO: NGS
 HV8921_PROJECTION: RECESSED 6 CENTIMETERS
 HV8921_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8921_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8921+STABILITY: SURFACE MOTION
 HV8921_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8921+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2014
 HV8921
 HV8921  HISTORY     - Date     Condition        Report By
 HV8921  HISTORY     - 1990     MONUMENTED       MDSHA
 HV8921  HISTORY     - 20060105 GOOD             USPSQD
 HV8921  HISTORY     - 20140208 GOOD             ARCSHE
 HV8921
 HV8921                          STATION DESCRIPTION
 HV8921
 HV8921'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HV8921'4.91 KM (3.05 MI) SOUTH ALONG STATE HIGHWAY 335 FROM THE JUNCTION OF
 HV8921'STATE HIGHWAY 16 AT CHURCH CREEK, 34.0 FT (10.4 M) EAST OF THE
 HV8921'CENTERLINE OF STATE HIGHWAY 335, 53.8 FT (16.4 M) NORTH OF POWER POLE
 HV8921'NUMBER 59.5, 84.9 FT (25.9 M) SOUTH OF POWER POLE NUMBER 59, 179.5 FT
 HV8921'(54.7 M) SOUTHEAST OF THE SOUTHEAST CORNER OF A WOODEN FENCE, SET IN
 HV8921'THE TOP OF A 1.0 FT (0.3 M) ROUND CONCRETE POST FLUSH WITH THE GROUND
 HV8921'AND 1.0 FT (0.3 M) LOWER THAN STATE HIGHWAY 335.
 HV8921
 HV8921                          STATION RECOVERY (2006)
 HV8921
 HV8921'RECOVERY NOTE BY US POWER SQUADRON 2006 (NNH)
 HV8921'THE POLES MENTIONED ARE TELEPHONE POLES AND ARE ON THE EAST SIDE OF
 HV8921'THE ROAD. THIS MARK IS UNDER WATER AT TIMES.
 HV8921
 HV8921                          STATION RECOVERY (2014)
 HV8921
 HV8921'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV8921'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4390 ***********************************************************************
 JU4390  DESIGNATION -  D 196
 JU4390  PID         -  JU4390
 JU4390  STATE/COUNTY-  MD/QUEEN ANNES
 JU4390  COUNTRY     -  US
 JU4390  USGS QUAD   -  CHURCH HILL (2017)
 JU4390
 JU4390                         *CURRENT SURVEY CONTROL
 JU4390  ______________________________________________________________________
 JU4390* NAD 83(1986) POSITION- 39 11 59.0    (N) 075 54 02.1    (W)   HD_HELD2
 JU4390* NAVD 88 ORTHO HEIGHT -    11.342 (meters)       37.21  (feet) ADJUSTED
 JU4390  ______________________________________________________________________
 JU4390  GEOID HEIGHT    -        -33.665 (meters)                     GEOID18
 JU4390  DYNAMIC HEIGHT  -         11.336 (meters)       37.19  (feet) COMP
 JU4390  MODELED GRAVITY -    980,105.3   (mgal)                       NAVD 88
 JU4390
 JU4390  VERT ORDER      -  SECOND    CLASS I
 JU4390
 JU4390.The horizontal coordinates were established by autonomous hand held GPS
 JU4390.observations and have an estimated accuracy of +/- 10 meters.
 JU4390
 JU4390.The orthometric height was determined by differential leveling and
 JU4390.adjusted by the NATIONAL GEODETIC SURVEY
 JU4390.in July 1996.
 JU4390
 JU4390.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4390.GEOID18 height accuracy estimate available here.
 JU4390
 JU4390.Click photographs - Photos may exist for this station.
 JU4390
 JU4390.The dynamic height is computed by dividing the NAVD 88
 JU4390.geopotential number by the normal gravity value computed on the
 JU4390.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4390.degrees latitude (g = 980.6199 gals.).
 JU4390
 JU4390.The modeled gravity was interpolated from observed gravity values.
 JU4390
 JU4390;                    North         East    Units  Estimated Accuracy
 JU4390;SPC MD       -   170,750.      494,965.      MT  (+/- 10 meters HH2 GPS)
 JU4390
 JU4390_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2223539326(NAD 83)
 JU4390
 JU4390                          SUPERSEDED SURVEY CONTROL
 JU4390
 JU4390.No superseded survey control is available for this station.
 JU4390
 JU4390_MARKER: DD = SURVEY DISK
 JU4390_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JU4390_SP_SET: BRIDGE PIER
 JU4390_STAMPING: D 196 1991
 JU4390_MARK LOGO: MDSHA
 JU4390_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU4390_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU4390_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU4390+SATELLITE: SATELLITE OBSERVATIONS - February 22, 2013
 JU4390
 JU4390  HISTORY     - Date     Condition        Report By
 JU4390  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4390  HISTORY     - 20020301 GOOD             USPSQD
 JU4390  HISTORY     - 20050101 GOOD             USPSQD
 JU4390  HISTORY     - 20130222 GOOD             ARCSHE
 JU4390
 JU4390                          STATION DESCRIPTION
 JU4390
 JU4390'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4390'THE MARKER IS LOCATED ABOUT 3 MILES (4.8 KM) SOUTHEAST OF CRUMPTON,
 JU4390'1.2 MI (1.9 KM) NORTHWEST OF DUDLEY CORNERS, ALONG THE WEST SIDE OF
 JU4390'STATE HIGHWAY 290 AND UNDER U.S. HIGHWAY 301.  IT IS ON ROAD
 JU4390'RIGHT-OF-WAY.
 JU4390'
 JU4390'TO REACH FROM THE POST OFFICE CRUMPTON, GO SOUTH ON STATE HIGHWAY 290
 JU4390'(BROAD STREET) FOR 3.2 MI (5.1 KM) TO THE MARKER ON THE LEFT.
 JU4390'
 JU4390'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK
 JU4390'CEMENTED IN A DRILL HOLE AT THE SOUTHEAST END THE FOUNDATION FOR THE
 JU4390'MOST NORTHERLY SET OF FOUR PIERS UNDER A LARGE OVERHEAD BRIDGE FOR THE
 JU4390'NORTHBOUND LANE OF U.S. HIGHWAY 301.  IT IS 22.5 FT (6.9 M) NORTHEAST
 JU4390'OF THE CENTER OF STATE HIGHWAY 290, 35 FT (10.7 M) SOUTHEAST OF THE
 JU4390'NORTHWEST END OF THE FOUNDATION, 1 FT (0.3 M) NORTHWEST OF THE
 JU4390'SOUTHEAST END OF THE FOUNDATION, 1 FT (0.3 M) SOUTHEAST OF THE
 JU4390'SOUTHEAST SIDE OF THE MOST SOUTHEAST ONE OF THE FOUR PIERS, ABOUT 2 FT
 JU4390'(0.6 M) NORTHEAST OF THE BOTTOM OF A CONCRETE JERSEY WALL AND ABOUT 3
 JU4390'FT (0.9 M) HIGHER THAN STATE HIGHWAY 290.
 JU4390
 JU4390                          STATION RECOVERY (2002)
 JU4390
 JU4390'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4390'RECOVERED IN GOOD CONDITION.
 JU4390
 JU4390                          STATION RECOVERY (2005)
 JU4390
 JU4390'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JU4390'RECOVERED IN GOOD CONDITION.
 JU4390
 JU4390                          STATION RECOVERY (2013)
 JU4390
 JU4390'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU4390'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6915 ***********************************************************************
 JV6915  DESIGNATION -  D 197
 JV6915  PID         -  JV6915
 JV6915  STATE/COUNTY-  MD/C OF BALTIMORE
 JV6915  COUNTRY     -  US
 JV6915  USGS QUAD   -  BALTIMORE EAST (2016)
 JV6915
 JV6915                         *CURRENT SURVEY CONTROL
 JV6915  ______________________________________________________________________
 JV6915* NAD 83(1986) POSITION- 39 18 25.     (N) 076 31 50.     (W)   SCALED
 JV6915* NAVD 88 ORTHO HEIGHT -    16.739 (meters)       54.92  (feet) ADJUSTED
 JV6915  ______________________________________________________________________
 JV6915  GEOID HEIGHT    -        -32.887 (meters)                     GEOID18
 JV6915  DYNAMIC HEIGHT  -         16.730 (meters)       54.89  (feet) COMP
 JV6915  MODELED GRAVITY -    980,099.9   (mgal)                       NAVD 88
 JV6915
 JV6915  VERT ORDER      -  THIRD
 JV6915
 JV6915.The horizontal coordinates were scaled from a map and have
 JV6915.an estimated accuracy of +/- 6 seconds.
 JV6915
 JV6915.The orthometric height was determined by differential leveling and
 JV6915.adjusted by the NATIONAL GEODETIC SURVEY
 JV6915.in May 2006.
 JV6915
 JV6915.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6915.GEOID18 height accuracy estimate available here.
 JV6915
 JV6915.Click photographs - Photos may exist for this station.
 JV6915
 JV6915.The dynamic height is computed by dividing the NAVD 88
 JV6915.geopotential number by the normal gravity value computed on the
 JV6915.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6915.degrees latitude (g = 980.6199 gals.).
 JV6915
 JV6915.The modeled gravity was interpolated from observed gravity values.
 JV6915
 JV6915;                    North         East    Units  Estimated Accuracy
 JV6915;SPC MD       -   182,190.      440,490.      MT  (+/- 180 meters Scaled)
 JV6915
 JV6915_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ680519(NAD 83)
 JV6915
 JV6915                          SUPERSEDED SURVEY CONTROL
 JV6915
 JV6915  NAVD 88 (06/02/95)   16.743  (m)           54.93   (f) SUPERSEDED  2 1
 JV6915
 JV6915.Superseded values are not recommended for survey control.
 JV6915
 JV6915.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6915.See file dsdata.pdf to determine how the superseded data were derived.
 JV6915
 JV6915_MARKER: DD = SURVEY DISK
 JV6915_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV6915+WITH SETTING: PAVEMENT
 JV6915_SP_SET: HIGHWAY SIGN BASE
 JV6915_STAMPING: D 197 1991
 JV6915_MARK LOGO: MDSHA
 JV6915_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6915_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6915+STABILITY: SURFACE MOTION
 JV6915
 JV6915  HISTORY     - Date     Condition        Report By
 JV6915  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6915  HISTORY     - 19950607 GOOD             MCCRON
 JV6915
 JV6915                          STATION DESCRIPTION
 JV6915
 JV6915'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6915'THE MARKER IS LOCATED IN THE SOUTHEAST PART OF BALTIMORE, IN THE
 JV6915'SOUTHEAST QUADRANT OF THE INTERSECTION OF INTERSTATE HIGHWAY 95 AND
 JV6915'U.S. HIGHWAY 40 (PULASKI HIGHWAY).  TO REACH FROM THE INTERSTATE
 JV6915'HIGHWAY 95 NORTHBOUND TOLL PLAZA WHICH IS LOCATED ON THE NORTHEAST
 JV6915'SIDE OF THE FORT MCHENRY TUNNEL, GO NORTHEAST ON INTERSTATE HIGHWAY
 JV6915'95 FOR 3.8 MI (6.1 KM) TO THE MARKER ON THE RIGHT, A MARYLAND STATE
 JV6915'HIGHWAY ADMINISTRATION SURVEY DISK IN THE CONCRETE BASE FOR A LARGE
 JV6915'OVERHEAD HIGHWAY SIGN.  IT IS 23 FT (7.0 M) EAST OF THE CENTER OF THE
 JV6915'EXIT RAMP LEADING FROM THE NORTHBOUND LANES OF INTERSTATE HIGHWAY 95
 JV6915'ONTO U.S. HIGHWAY 40 (POLASKI HIGHWAY), 145.5 FT (44.3 M) SOUTH OF
 JV6915'THE SOUTH END OF A DROP INLET, 1.8 FT (0.5 M) EAST OF THE BACK SIDE
 JV6915'OF A JERSEY BARRIER AND ABOUT 2 FT (0.6 M) ABOVE THE ROAD SURFACE.
 JV6915
 JV6915                          STATION RECOVERY (1995)
 JV6915
 JV6915'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6915'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1586 ***********************************************************************
 JW1586  DESIGNATION -  D 198
 JW1586  PID         -  JW1586
 JW1586  STATE/COUNTY-  MD/GARRETT
 JW1586  COUNTRY     -  US
 JW1586  USGS QUAD   -  TABLE ROCK (2016)
 JW1586
 JW1586                         *CURRENT SURVEY CONTROL
 JW1586  ______________________________________________________________________
 JW1586* NAD 83(1986) POSITION- 39 22 28.35   (N) 079 24 54.66   (W)   HD_HELD1
 JW1586* NAVD 88 ORTHO HEIGHT -   750.477 (meters)     2462.19  (feet) ADJUSTED
 JW1586  ______________________________________________________________________
 JW1586  GEOID HEIGHT    -        -31.108 (meters)                     GEOID18
 JW1586  DYNAMIC HEIGHT  -        749.960 (meters)     2460.49  (feet) COMP
 JW1586  MODELED GRAVITY -    979,912.7   (mgal)                       NAVD 88
 JW1586
 JW1586  VERT ORDER      -  SECOND    CLASS I
 JW1586
 JW1586.The horizontal coordinates were determined by differentially corrected
 JW1586.hand held GPS observations or other comparable positioning techniques
 JW1586.and have an estimated accuracy of +/- 3 meters.
 JW1586
 JW1586.The orthometric height was determined by differential leveling and
 JW1586.adjusted by the NATIONAL GEODETIC SURVEY
 JW1586.in April 1995.
 JW1586
 JW1586.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1586.GEOID18 height accuracy estimate available here.
 JW1586
 JW1586.Click photographs - Photos may exist for this station.
 JW1586
 JW1586.The dynamic height is computed by dividing the NAVD 88
 JW1586.geopotential number by the normal gravity value computed on the
 JW1586.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1586.degrees latitude (g = 980.6199 gals.).
 JW1586
 JW1586.The modeled gravity was interpolated from observed gravity values.
 JW1586
 JW1586;                    North         East    Units  Estimated Accuracy
 JW1586;SPC MD       -   192,338.8     191,915.7     MT  (+/- 3 meters HH1 GPS) 
 JW1586
 JW1586_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3650959539(NAD 83)
 JW1586
 JW1586                          SUPERSEDED SURVEY CONTROL
 JW1586
 JW1586.No superseded survey control is available for this station.
 JW1586
 JW1586_MARKER: DD = SURVEY DISK
 JW1586_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JW1586_SP_SET: HEADWALL
 JW1586_STAMPING: D 198 1991
 JW1586_MARK LOGO: MDSHA
 JW1586_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1586_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1586+STABILITY: SURFACE MOTION
 JW1586_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1586+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2016
 JW1586
 JW1586  HISTORY     - Date     Condition        Report By
 JW1586  HISTORY     - 1991     MONUMENTED       MDSHA
 JW1586  HISTORY     - 20090725 GOOD             GEOCAC
 JW1586  HISTORY     - 20160925 GOOD             GEOCAC
 JW1586
 JW1586                          STATION DESCRIPTION
 JW1586
 JW1586'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW1586'THE MARK IS LOCATED ABOUT 1.5 MI (2.4 KM) NORTH-NORTHEAST OF GORTNER,
 JW1586'2.45 MI (3.94 KM) SOUTH-SOUTHWEST OF OAKLAND AND ALONG U.S. HIGHWAY
 JW1586'219.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARK FROM THE POST
 JW1586'OFFICE IN OAKLAND, GO SOUTHWEST ON SECOND STREET FOR 0.2 MI (0.3 KM)
 JW1586'TO U.S. HIGHWAY 219.  TURN LEFT AND GO SOUTH ON U.S. HIGHWAY 219
 JW1586'FOR 2.9 MI (4.7 KM) TO THE MARK ON THE RIGHT.  THE POINT IS MARKED
 JW1586'WITH A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE
 JW1586'NORTHEAST CORNER OF THE TOP OF A CONCRETE HEADWALL.  IT IS 68.0 FT
 JW1586'(20.7 M) NORTHWEST OF THE CENTER OF U.S. HIGHWAY 219, 32.5 FT (9.9
 JW1586'M) SOUTHWEST OF A TELEPHONE POLE NUMBERED C AND P 86 AND 1.5 FT (0.5
 JW1586'M) NORTHWEST OF THE WITNESS POST.  IT IS ABOUT 11.0 FT (3.4 M) BELOW
 JW1586'THE SURFACE OF THE ROAD.
 JW1586
 JW1586                          STATION RECOVERY (2009)
 JW1586
 JW1586'RECOVERY NOTE BY GEOCACHING 2009 (BP)
 JW1586'RECOVERED IN GOOD CONDITION.
 JW1586
 JW1586                          STATION RECOVERY (2016)
 JW1586
 JW1586'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW1586'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2783 ***********************************************************************
 HU2783  DESIGNATION -  D 199
 HU2783  PID         -  HU2783
 HU2783  STATE/COUNTY-  MD/WORCESTER
 HU2783  COUNTRY     -  US
 HU2783  USGS QUAD   -  BERLIN (2016)
 HU2783
 HU2783                         *CURRENT SURVEY CONTROL
 HU2783  ______________________________________________________________________
 HU2783* NAD 83(1986) POSITION- 38 20 46.     (N) 075 10 03.     (W)   SCALED
 HU2783* NAVD 88 ORTHO HEIGHT -     4.331 (meters)       14.21  (feet) ADJUSTED
 HU2783  ______________________________________________________________________
 HU2783  GEOID HEIGHT    -        -36.016 (meters)                     GEOID18
 HU2783  DYNAMIC HEIGHT  -          4.328 (meters)       14.20  (feet) COMP
 HU2783  MODELED GRAVITY -    980,008.6   (mgal)                       NAVD 88
 HU2783
 HU2783  VERT ORDER      -  SECOND    CLASS I
 HU2783
 HU2783.The horizontal coordinates were scaled from a map and have
 HU2783.an estimated accuracy of +/- 6 seconds.
 HU2783
 HU2783.The orthometric height was determined by differential leveling and
 HU2783.adjusted by the NATIONAL GEODETIC SURVEY
 HU2783.in November 1994.
 HU2783
 HU2783.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2783.GEOID18 height accuracy estimate available here.
 HU2783
 HU2783.Click photographs - Photos may exist for this station.
 HU2783
 HU2783.The dynamic height is computed by dividing the NAVD 88
 HU2783.geopotential number by the normal gravity value computed on the
 HU2783.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2783.degrees latitude (g = 980.6199 gals.).
 HU2783
 HU2783.The modeled gravity was interpolated from observed gravity values.
 HU2783
 HU2783;                    North         East    Units  Estimated Accuracy
 HU2783;SPC MD       -    77,030.      560,180.      MT  (+/- 180 meters Scaled)
 HU2783
 HU2783_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH853442(NAD 83)
 HU2783
 HU2783                          SUPERSEDED SURVEY CONTROL
 HU2783
 HU2783  NGVD 29 (02/25/92)    4.575  (m)           15.01   (f) ADJUSTED    2 1
 HU2783
 HU2783.Superseded values are not recommended for survey control.
 HU2783
 HU2783.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2783.See file dsdata.pdf to determine how the superseded data were derived.
 HU2783
 HU2783_MARKER: DV = VERTICAL CONTROL DISK
 HU2783_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2783_STAMPING: D 199 1991
 HU2783_MARK LOGO: NGS
 HU2783_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2783_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2783+STABILITY: SURFACE MOTION
 HU2783_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2783+SATELLITE: SATELLITE OBSERVATIONS - February 26, 2002
 HU2783
 HU2783  HISTORY     - Date     Condition        Report By
 HU2783  HISTORY     - 1991     MONUMENTED       MDSHA
 HU2783  HISTORY     - 20020226 GOOD             USPSQD
 HU2783  HISTORY     - 20031228 MARK NOT FOUND   USPSQD
 HU2783  HISTORY     - 20051128 MARK NOT FOUND   USPSQD
 HU2783
 HU2783                          STATION DESCRIPTION
 HU2783
 HU2783'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2783'THE MARK IS LOCATED ABOUT 4.47 MI (7.19 KM) WEST OF OCEAN CITY, 3.18
 HU2783'MI (5.12 KM) NORTHEAST OF BERLIN AND ON ROAD RIGHT-OF-WAY.  TO REACH
 HU2783'FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 IN BERLIN, GO EAST
 HU2783'ON U.S. HIGHWAY 50 FOR 2.57 MI (4.14 KM) TO THE INTERSECTION OF
 HU2783'STATE ROUTE 589 AND THE MARK ON THE LEFT IN THE MEDIAN.  IT IS 79.3
 HU2783'FT (24.2 M) SOUTHEAST OF A LIGHT POLE, 46.7 FT (14.2 M) EAST OF A
 HU2783'CROSSOVER, 41.8 FT (12.7 M) NORTH OF THE CENTER LINE OF THE EASTBOUND
 HU2783'LANES OF THE HIGHWAY, 31.8 FT (9.7 M) SOUTH OF THE CENTER LINE OF THE
 HU2783'WESTBOUND LANES OF THE HIGHWAY AND SET IN THE TOP OF A 0.8 FT (0.2 M)
 HU2783'ROUND CONCRETE POST FLUSH WITH THE GROUND.
 HU2783
 HU2783                          STATION RECOVERY (2002)
 HU2783
 HU2783'RECOVERY NOTE BY US POWER SQUADRON 2002 (PMF)
 HU2783'RECOVERED IN GOOD CONDITION.
 HU2783
 HU2783                          STATION RECOVERY (2003)
 HU2783
 HU2783'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU2783'MARK NOT FOUND.
 HU2783
 HU2783                          STATION RECOVERY (2005)
 HU2783
 HU2783'RECOVERY NOTE BY US POWER SQUADRON 2005 (WAC)
 HU2783'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0868 ***********************************************************************
 HV0868  DESIGNATION -  D 2
 HV0868  PID         -  HV0868
 HV0868  STATE/COUNTY-  MD/CHARLES
 HV0868  COUNTRY     -  US
 HV0868  USGS QUAD   -  LA PLATA (2016)
 HV0868
 HV0868                         *CURRENT SURVEY CONTROL
 HV0868  ______________________________________________________________________
 HV0868* NAD 83(1986) POSITION- 38 30 15.     (N) 076 58 53.     (W)   SCALED
 HV0868* NAVD 88 ORTHO HEIGHT -    54.047 (meters)      177.32  (feet) ADJUSTED
 HV0868  ______________________________________________________________________
 HV0868  GEOID HEIGHT    -        -33.093 (meters)                     GEOID18
 HV0868  DYNAMIC HEIGHT  -         54.015 (meters)      177.21  (feet) COMP
 HV0868  MODELED GRAVITY -    980,024.4   (mgal)                       NAVD 88
 HV0868
 HV0868  VERT ORDER      -  FIRST     CLASS II
 HV0868
 HV0868.The horizontal coordinates were scaled from a map and have
 HV0868.an estimated accuracy of +/- 6 seconds.
 HV0868
 HV0868.The orthometric height was determined by differential leveling and
 HV0868.adjusted by the NATIONAL GEODETIC SURVEY
 HV0868.in June 1991.
 HV0868
 HV0868.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0868.GEOID18 height accuracy estimate available here.
 HV0868
 HV0868.Click photographs - Photos may exist for this station.
 HV0868
 HV0868.The dynamic height is computed by dividing the NAVD 88
 HV0868.geopotential number by the normal gravity value computed on the
 HV0868.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0868.degrees latitude (g = 980.6199 gals.).
 HV0868
 HV0868.The modeled gravity was interpolated from observed gravity values.
 HV0868
 HV0868;                    North         East    Units  Estimated Accuracy
 HV0868;SPC MD       -    92,970.      401,620.      MT  (+/- 180 meters Scaled)
 HV0868
 HV0868_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH272636(NAD 83)
 HV0868
 HV0868                          SUPERSEDED SURVEY CONTROL
 HV0868
 HV0868  NGVD 29 (05/01/89)   54.295  (m)          178.13   (f) ADJUSTED    1 2
 HV0868  NGVD 29 (??/??/87)   54.336  (m)          178.27   (f) SUPERSEDED  1 2
 HV0868
 HV0868.Superseded values are not recommended for survey control.
 HV0868
 HV0868.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0868.See file dsdata.pdf to determine how the superseded data were derived.
 HV0868
 HV0868_MARKER: DB = BENCH MARK DISK
 HV0868_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0868_STAMPING: D 2 1917
 HV0868_MARK LOGO: CGS
 HV0868_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0868+STABILITY: SURFACE MOTION
 HV0868
 HV0868  HISTORY     - Date     Condition        Report By
 HV0868  HISTORY     - 1917     MONUMENTED       CGS
 HV0868  HISTORY     - 1942     GOOD             CGS
 HV0868
 HV0868                          STATION DESCRIPTION
 HV0868
 HV0868'DESCRIBED BY COAST AND GEODETIC SURVEY 1917
 HV0868'1.5 MI S FROM LA PLATA.
 HV0868'1.5 MILES SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HV0868'AT LA PLATA, CHARLES COUNTY, AT THE SITE OF THE OLD PORT TOBACCO
 HV0868'STATION, NEAR AN IMPROVED DIRT-ROAD CROSSING, 246 FEET NORTHEAST
 HV0868'OF THE CENTER LINE OF THE DIRT ROAD, 60.6 FEET SOUTHEAST OF
 HV0868'THE SOUTHEAST RAIL OF THE MAIN TRACK, 23 FEET EAST OF A 22-INCH
 HV0868'BLAZED OAK TREE, NEAR A WHITE WOODEN WITNESS POST, AND 1 FOOT
 HV0868'FROM THE RIGHT-OF-WAY FENCE.  A STANDARD DISK, STAMPED D 2 1917,
 HV0868'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 10 INCHES ABOVE
 HV0868'GROUND.
 HV0868
 HV0868                          STATION RECOVERY (1942)
 HV0868
 HV0868'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0868'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3937 ***********************************************************************
 JU3937  DESIGNATION -  D 2
 JU3937  PID         -  JU3937
 JU3937  STATE/COUNTY-  MD/CECIL
 JU3937  COUNTRY     -  US
 JU3937  USGS QUAD   -  NORTH EAST (2016)
 JU3937
 JU3937                         *CURRENT SURVEY CONTROL
 JU3937  ______________________________________________________________________
 JU3937* NAD 83(1991) POSITION- 39 30 55.28158(N) 075 55 14.52629(W)   ADJUSTED
 JU3937* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3937  ______________________________________________________________________
 JU3937  GEOID HEIGHT    -        -33.296 (meters)                     GEOID18
 JU3937  LAPLACE CORR    -         -0.78  (seconds)                    DEFLEC18
 JU3937  HORZ ORDER      -  THIRD
 JU3937
 JU3937.The horizontal coordinates were established by classical geodetic methods
 JU3937.and adjusted by the National Geodetic Survey in January 1992.
 JU3937
 JU3937.The orthometric height was scaled from a topographic map.
 JU3937
 JU3937.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3937.GEOID18 height accuracy estimate available here.
 JU3937
 JU3937.Click photographs - Photos may exist for this station.
 JU3937
 JU3937.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3937
 JU3937. The following values were computed from the NAD 83(1991) position.
 JU3937
 JU3937;                    North         East     Units Scale Factor Converg.
 JU3937;SPC MD       -   205,768.496   492,812.661   MT  1.00001209   +0 40 38.7
 JU3937;SPC MD       -   675,092.14  1,616,836.21   sFT  1.00001209   +0 40 38.7
 JU3937;UTM  18      - 4,374,373.358   420,855.738   MT  0.99967712   -0 35 09.1
 JU3937
 JU3937!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3937!SPC MD       -   1.00000526  x   1.00001209  =   1.00001735
 JU3937!UTM  18      -   1.00000526  x   0.99967712  =   0.99968238
 JU3937
 JU3937:                Primary Azimuth Mark                     Grid Az
 JU3937:SPC MD       -  E                                        204 15 24.8
 JU3937:UTM  18      -  E                                        205 31 12.6
 JU3937
 JU3937_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2085574373(NAD 83)
 JU3937
 JU3937|---------------------------------------------------------------------|
 JU3937| PID    Reference Object                     Distance      Geod. Az  |
 JU3937|                                                           dddmmss.s |
 JU3937| CB1403 D 2 RM 1                              6.000 METERS 02456     |
 JU3937| CB1404 D 2 RM 2                             34.333 METERS 02500     |
 JU3937| JU3928 ARNOLD POINT CHAN REAR RNG LT       APPROX. 1.3 KM 0932811.4 |
 JU3937| JU3936 ARNOLD POINT CHAN FRONT RNG LT      APPROX. 0.9 KM 1372952.7 |
 JU3937| JU3956 OLD TOWN POINT WHARF LIGHT          APPROX. 1.4 KM 1625322.3 |
 JU3937| JU3938 E                                   APPROX. 1.3 KM 2045603.5 |
 JU3937|---------------------------------------------------------------------|
 JU3937
 JU3937                          SUPERSEDED SURVEY CONTROL
 JU3937
 JU3937  NAD 83(1986)-  39 30 55.27401(N)    075 55 14.53365(W) AD(       ) 3
 JU3937  NAD 27      -  39 30 54.87500(N)    075 55 15.74700(W) AD(       ) 3
 JU3937
 JU3937.Superseded values are not recommended for survey control.
 JU3937
 JU3937.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3937.See file dsdata.pdf to determine how the superseded data were derived.
 JU3937
 JU3937_MARKER: DD = SURVEY DISK
 JU3937_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3937_STAMPING: D 2
 JU3937_MARK LOGO: USACE
 JU3937_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3937+STABILITY: SURFACE MOTION
 JU3937
 JU3937  HISTORY     - Date     Condition        Report By
 JU3937  HISTORY     - 1937     MONUMENTED       USACE
 JU3937  HISTORY     - 1938     GOOD             CGS
 JU3937  HISTORY     - 1984     MARK NOT FOUND   USPSQD
 JU3937
 JU3937                          STATION DESCRIPTION
 JU3937
 JU3937'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3937'LOCATED ON THE N SIDE OF ELK RIVER ON PINEY CREEK COVE BETWEEN
 JU3937'MUDDY CREEK AND JONES CREEK ABOUT 125 METERS SW OF A LONG WOOD
 JU3937'DOCK.  IT IS 6.5 METERS INSHORE FROM HIGH WATER, 17.0 METERS SW
 JU3937'OF A WIRE FENCE, AND 3.0 METERS SE OF A 6-FOOT BLUFF.
 JU3937'
 JU3937'THE STATION AND REFERENCE MARKS ARE STANDARD U.S.E. DISKS SET
 JU3937'ATOP CONCRETE POSTS.
 JU3937
 JU3937                          STATION RECOVERY (1938)
 JU3937
 JU3937'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3937'STATION MARK AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.
 JU3937'
 JU3937'STATION IS LOCATED ON ELK NECK ON THE W SIDE OF ELK RIVER ON THE
 JU3937'NW SHORE OF PINEY CREEK COVE ABOUT HALFWAY BETWEEN JONES CREEK
 JU3937'AND PINEY CREEK.
 JU3937'
 JU3937'STATION MARK IS 130 METERS SW OF THE INSHORE END OF A LARGE DOCK
 JU3937'IN FRONT OF A VERY LARGE SUMMER HOME, 17 METERS SW OF A WIRE
 JU3937'FENCE, AT THE FOOT OF A 6-FOOT HIGH BLUFF, 6.5 METERS NW OF
 JU3937'HIGH-WATER LINE, AND APPROXIMATELY 3 FEET ABOVE HIGH WATER.  THE
 JU3937'MARK IS A STANDARD U.S.E. DISK ATOP A 6-INCH SQUARE CONCRETE POST
 JU3937'AND PROJECTS 6 INCHES ABOVE THE SURFACE.
 JU3937'
 JU3937'REFERENCE MARK NO.1 IS 6.00 METERS N OF THE STATION MARK ON TOP
 JU3937'OF THE 6-FOOT BLUFF.  REFERENCE MARK NO.2 IS 34.42 METERS N OF
 JU3937'THE STATION MARK.  REFERENCE MARK NO.1, REFERENCE MARK NO.2 AND
 JU3937'THE STATION MARK ARE ON LINE.  BOTH REFERENCE MARKS ARE STANDARD
 JU3937'U.S.E.D. DISKS ATOP 6-INCH SQUARE CONCRETE POSTS AND PROJECT 4
 JU3937'INCHES ABOVE GROUND.
 JU3937'
 JU3937'TO REACH THE STATION FROM THE COURTHOUSE IN ELKTON, FOLLOW
 JU3937'U.S. HIGHWAY 40 W 0.5 MILE TO TRAFFIC LIGHT.  TURN LEFT, FOLLOW
 JU3937'ROAD 0.5 MILE.  TURN RIGHT ONTO TAR ROAD TO ELK NECK, FOLLOW TAR
 JU3937'ROAD 5.8 MILES, TURN RIGHT ONTO DIRT ROAD FOR 1.3 MILES (KEEP TO
 JU3937'LEFT AT FORK).  TURN LEFT FOR 0.8 MILE TO IMPROVED PRIVATE DRIVE
 JU3937'ON LEFT.  FOLLOW IMPROVED DRIVE FOR 1.5 MILES TO LARGE DOCK IN
 JU3937'FRONT OF LARGE SUMMER HOME.  STATION IS 130 METERS SW OF DOCK
 JU3937'ALONG SAND BEACH.
 JU3937
 JU3937                          STATION RECOVERY (1984)
 JU3937
 JU3937'RECOVERY NOTE BY US POWER SQUADRON 1984 (AHJ)
 JU3937'STATION MARK AND REFERENCE MARKS COULD NOT BE FOUND.  GROUND WHERE
 JU3937'MARK WAS LOCATED HAS ERODED AWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0869 ***********************************************************************
 HV0869  DESIGNATION -  D 2 RESET
 HV0869  PID         -  HV0869
 HV0869  STATE/COUNTY-  MD/CHARLES
 HV0869  COUNTRY     -  US
 HV0869  USGS QUAD   -  LA PLATA (2016)
 HV0869
 HV0869                         *CURRENT SURVEY CONTROL
 HV0869  ______________________________________________________________________
 HV0869* NAD 83(1986) POSITION- 38 30 15.     (N) 076 58 53.     (W)   SCALED
 HV0869* NAVD 88 ORTHO HEIGHT -    53.987 (meters)      177.12  (feet) ADJUSTED
 HV0869  ______________________________________________________________________
 HV0869  GEOID HEIGHT    -        -33.093 (meters)                     GEOID18
 HV0869  DYNAMIC HEIGHT  -         53.955 (meters)      177.02  (feet) COMP
 HV0869  MODELED GRAVITY -    980,024.4   (mgal)                       NAVD 88
 HV0869
 HV0869  VERT ORDER      -  FIRST     CLASS II
 HV0869
 HV0869.The horizontal coordinates were scaled from a map and have
 HV0869.an estimated accuracy of +/- 6 seconds.
 HV0869
 HV0869.The orthometric height was determined by differential leveling and
 HV0869.adjusted by the NATIONAL GEODETIC SURVEY
 HV0869.in June 1991.
 HV0869
 HV0869.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0869.GEOID18 height accuracy estimate available here.
 HV0869
 HV0869.Click photographs - Photos may exist for this station.
 HV0869
 HV0869.The dynamic height is computed by dividing the NAVD 88
 HV0869.geopotential number by the normal gravity value computed on the
 HV0869.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0869.degrees latitude (g = 980.6199 gals.).
 HV0869
 HV0869.The modeled gravity was interpolated from observed gravity values.
 HV0869
 HV0869;                    North         East    Units  Estimated Accuracy
 HV0869;SPC MD       -    92,970.      401,620.      MT  (+/- 180 meters Scaled)
 HV0869
 HV0869_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH272636(NAD 83)
 HV0869
 HV0869                          SUPERSEDED SURVEY CONTROL
 HV0869
 HV0869  NGVD 29 (11/26/84)   54.217  (m)          177.88   (f) ADJUSTED    1 2
 HV0869
 HV0869.Superseded values are not recommended for survey control.
 HV0869
 HV0869.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0869.See file dsdata.pdf to determine how the superseded data were derived.
 HV0869
 HV0869_MARKER: DB = BENCH MARK DISK
 HV0869_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0869_STAMPING: D 2 1917 RESET 1971
 HV0869_MARK LOGO: CGS
 HV0869_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0869+STABILITY: SURFACE MOTION
 HV0869_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0869+SATELLITE: SATELLITE OBSERVATIONS - August 13, 2005
 HV0869
 HV0869  HISTORY     - Date     Condition        Report By
 HV0869  HISTORY     - 1971     MONUMENTED       NGS
 HV0869  HISTORY     - 20050813 GOOD             GEOCAC
 HV0869
 HV0869                          STATION DESCRIPTION
 HV0869
 HV0869'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0869'1.9 MI S FROM LA PLATA.
 HV0869'ABOUT 1.75 MILES SOUTH ALONG ST MARYS AVENUE FROM THE INTERSECTION
 HV0869'OF EAST CHARLES STREET AT LA PLATA, THENCE 0.15 MILE EASTERLY
 HV0869'ALONG SPRING HILL-NEWTON ROAD, ALONG THE PENNSYLVANIA RAILROAD,
 HV0869'246 FEET NORTH OF THE CROSSING OF THE RAILROAD AND THE SPRING
 HV0869'HILL NEWTON ROAD, 267 FEET WEST OF THE SOUTHWEST CORNER OF A
 HV0869'HOUSE, 60 1/2 FEET EAST OF THE EAST RAIL OF THE TRACK, 26 FEET
 HV0869'NORTHWEST OF POWER LINE POLE NO. 4 BEARING A TRANSFORMER, SET
 HV0869'IN THE TOP OF A CONCRETE POST PROJECTING 5 INCHES ABOVE THE
 HV0869'LEVEL OF THE GROUND.
 HV0869
 HV0869                          STATION RECOVERY (2005)
 HV0869
 HV0869'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV0869'FOUND AS DESCRIBED ON AN EIGHT-SIDED, 6-INCH DIAMETER CONCRETE POST,
 HV0869'WHICH PROJECTS ABOUT 7 INCHES ABOVE GROUND LEVEL. LOCATED ON A
 HV0869'RESIDENTIAL LAWN ACROSS GREENLAND PLACE, A NARROW BLACKTOP ROAD, FROM
 HV0869'THE RAILROAD TRACKS. LOCATED ACROSS THE TRACKS AND SOUTHWEST OF
 HV0869'STATION PORT RESET (HV0866), DISTANCE NOT MEASURED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0040 ***********************************************************************
 JV0040  DESIGNATION -  D 20
 JV0040  PID         -  JV0040
 JV0040  STATE/COUNTY-  MD/CECIL
 JV0040  COUNTRY     -  US
 JV0040  USGS QUAD   -  CONOWINGO DAM (2016)
 JV0040
 JV0040                         *CURRENT SURVEY CONTROL
 JV0040  ______________________________________________________________________
 JV0040* NAD 83(1986) POSITION- 39 39 52.     (N) 076 09 46.     (W)   SCALED
 JV0040* NAVD 88 ORTHO HEIGHT -    30.400 (meters)       99.74  (feet) ADJUSTED
 JV0040  ______________________________________________________________________
 JV0040  GEOID HEIGHT    -        -32.917 (meters)                     GEOID18
 JV0040  DYNAMIC HEIGHT  -         30.385 (meters)       99.69  (feet) COMP
 JV0040  MODELED GRAVITY -    980,150.3   (mgal)                       NAVD 88
 JV0040
 JV0040  VERT ORDER      -  FIRST     CLASS II
 JV0040
 JV0040.The horizontal coordinates were scaled from a map and have
 JV0040.an estimated accuracy of +/- 6 seconds.
 JV0040
 JV0040.The orthometric height was determined by differential leveling and
 JV0040.adjusted by the NATIONAL GEODETIC SURVEY
 JV0040.in June 1991.
 JV0040
 JV0040.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0040.GEOID18 height accuracy estimate available here.
 JV0040
 JV0040.Click photographs - Photos may exist for this station.
 JV0040
 JV0040.The dynamic height is computed by dividing the NAVD 88
 JV0040.geopotential number by the normal gravity value computed on the
 JV0040.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0040.degrees latitude (g = 980.6199 gals.).
 JV0040
 JV0040.The modeled gravity was interpolated from observed gravity values.
 JV0040
 JV0040;                    North         East    Units  Estimated Accuracy
 JV0040;SPC MD       -   222,100.      471,850.      MT  (+/- 180 meters Scaled)
 JV0040
 JV0040_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ002911(NAD 83)
 JV0040
 JV0040                          SUPERSEDED SURVEY CONTROL
 JV0040
 JV0040  NGVD 29 (11/26/84)   30.655  (m)          100.57   (f) ADJUSTED    1 2
 JV0040
 JV0040.Superseded values are not recommended for survey control.
 JV0040
 JV0040.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0040.See file dsdata.pdf to determine how the superseded data were derived.
 JV0040
 JV0040_MARKER: DB = BENCH MARK DISK
 JV0040_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0040_SP_SET: HEADWALL
 JV0040_STAMPING: D 20 1955
 JV0040_MARK LOGO: CGS
 JV0040_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0040+STABILITY: SURFACE MOTION
 JV0040_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0040+SATELLITE: SATELLITE OBSERVATIONS - November 01, 1989
 JV0040
 JV0040  HISTORY     - Date     Condition        Report By
 JV0040  HISTORY     - 1955     MONUMENTED       CGS
 JV0040  HISTORY     - 1979     GOOD             NGS
 JV0040  HISTORY     - 19891101 GOOD             NGS
 JV0040
 JV0040                          STATION DESCRIPTION
 JV0040
 JV0040'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0040'0.6 MI SE FROM CONOWINGO DAM.
 JV0040'ABOUT 0.55 MILE SOUTHEAST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV0040'THE STATION AT CONOWINGO DAM, ABOUT 0.45 MILE NORTHWEST OF MILE
 JV0040'POST 9, 0.45 MILE SOUTHEAST OF OVERPASS OF U.S. HIGHWAY 1 OVER
 JV0040'TRACK, ABOUT 145 YARDS SOUTHEAST OF SIGNAL NO. C 345, ABOUT 55
 JV0040'YARDS SOUTHEAST OF TROLLEY POLE NO. 209, IN THE TOP OF NORTHWEST
 JV0040'END OF THE NORTHEAST CONCRETE HEAD WALL OF A 24-INCH PIPE
 JV0040'CULVERT, 11 FEET NORTHEAST OF NORTHEAST RAIL AND ABOUT 2 FEET
 JV0040'BELOW LEVEL OF TRACK.
 JV0040
 JV0040                          STATION RECOVERY (1979)
 JV0040
 JV0040'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0040'RECOVERED IN GOOD CONDITION.
 JV0040
 JV0040                          STATION RECOVERY (1989)
 JV0040
 JV0040'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0040'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  0.6 KM
 JV0040'(0.35 MI) SOUTHERLY ALONG THE CONRAIL RAILROAD FROM ITS JUNCTION WITH
 JV0040'U.S. HIGHWAY 1 AT THE NORTH END OF CONOWINGO DAM, IN TOP OF AND 0.3
 JV0040'M (1.0 FT) SOUTHEAST OF THE NORTHWEST END OF THE NORTHEAST CONCRETE
 JV0040'HEADWALL OF A 24-INCH CULVERT, 132 M (433.1 FT) SOUTHEAST OF
 JV0040'SEMAPHORE NUMBER 95, 3.4 M (11.2 FT) NORTHEAST OF THE NEAR RAIL, AND
 JV0040'0.8 M (2.6 FT) BELOW THE LEVEL OF THE TRACKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DE9119 ***********************************************************************
 DE9119  DESIGNATION -  D 201
 DE9119  PID         -  DE9119
 DE9119  STATE/COUNTY-  MD/SOMERSET
 DE9119  COUNTRY     -  US
 DE9119  USGS QUAD   -  MARION (2016)
 DE9119
 DE9119                         *CURRENT SURVEY CONTROL
 DE9119  ______________________________________________________________________
 DE9119* NAD 83(2011) POSITION- 38 01 00.50649(N) 075 49 04.92820(W)   ADJUSTED
 DE9119* NAD 83(2011) ELLIP HT-   -34.650 (meters)        (02/16/16)   ADJUSTED
 DE9119* NAD 83(2011) EPOCH   -  2010.00
 DE9119* NAVD 88 ORTHO HEIGHT -     1.443 (meters)        4.73  (feet) ADJUSTED
 DE9119  ______________________________________________________________________
 DE9119  GEOID HEIGHT    -        -36.079 (meters)                     GEOID18
 DE9119  NAD 83(2011) X  -  1,232,668.171 (meters)                     COMP
 DE9119  NAD 83(2011) Y  - -4,877,913.333 (meters)                     COMP
 DE9119  NAD 83(2011) Z  -  3,906,892.541 (meters)                     COMP
 DE9119  LAPLACE CORR    -         -1.72  (seconds)                    DEFLEC18
 DE9119  DYNAMIC HEIGHT  -          1.442 (meters)        4.73  (feet) COMP
 DE9119  MODELED GRAVITY -    979,975.3   (mgal)                       NAVD 88
 DE9119
 DE9119  VERT ORDER      -  SECOND    CLASS I
 DE9119
 DE9119  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DE9119  Standards:
 DE9119         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DE9119            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DE9119  -------------------------------------------------------------------
 DE9119  NETWORK    0.58   1.39           0.25   0.22   0.71     -0.21228471
 DE9119  -------------------------------------------------------------------
 DE9119  Click here for local accuracies and other accuracy information.
 DE9119
 DE9119.The horizontal coordinates were established by GPS observations
 DE9119.and adjusted by the ARCHER-SHEE LAND SURVEYING in February 2016.
 DE9119
 DE9119.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DE9119.been affixed to the stable North American tectonic plate. See 
 DE9119.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DE9119
 DE9119.The horizontal coordinates are valid at the epoch date displayed above
 DE9119.which is a decimal equivalence of Year/Month/Day.
 DE9119
 DE9119.The orthometric height was determined by differential leveling and
 DE9119.adjusted by the NATIONAL GEODETIC SURVEY
 DE9119.in February 2003.
 DE9119
 DE9119.Significant digits in the geoid height do not necessarily reflect accuracy.
 DE9119.GEOID18 height accuracy estimate available here.
 DE9119
 DE9119.Click photographs - Photos may exist for this station.
 DE9119
 DE9119.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DE9119
 DE9119.The Laplace correction was computed from DEFLEC18 derived deflections.
 DE9119
 DE9119.The ellipsoidal height was determined by GPS observations
 DE9119.and is referenced to NAD 83.
 DE9119
 DE9119.The dynamic height is computed by dividing the NAVD 88
 DE9119.geopotential number by the normal gravity value computed on the
 DE9119.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DE9119.degrees latitude (g = 980.6199 gals.).
 DE9119
 DE9119.The modeled gravity was interpolated from observed gravity values.
 DE9119
 DE9119. The following values were computed from the NAD 83(2011) position.
 DE9119
 DE9119;                    North         East     Units Scale Factor Converg.
 DE9119;SPC MD       -    39,539.673   503,794.608   MT  1.00006132   +0 44 30.6
 DE9119;SPC MD       -   129,723.08  1,652,866.14   sFT  1.00006132   +0 44 30.6
 DE9119;UTM  18      - 4,207,995.552   428,194.459   MT  0.99966350   -0 30 13.8
 DE9119
 DE9119!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DE9119!SPC MD       -   1.00000544  x   1.00006132  =   1.00006676
 DE9119!UTM  18      -   1.00000544  x   0.99966350  =   0.99966894
 DE9119
 DE9119:                Primary Azimuth Mark                     Grid Az
 DE9119:SPC MD       -  FRITZ                                    266 00 37.2
 DE9119:UTM  18      -  FRITZ                                    267 15 21.6
 DE9119
 DE9119_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2819407995(NAD 83)
 DE9119
 DE9119|---------------------------------------------------------------------|
 DE9119| PID    Reference Object                     Distance      Geod. Az  |
 DE9119|                                                           dddmmss.s |
 DE9119| DE9120 FRITZ                               414.545 METERS 2664507.8 |
 DE9119|---------------------------------------------------------------------|
 DE9119
 DE9119                          SUPERSEDED SURVEY CONTROL
 DE9119
 DE9119.No superseded survey control is available for this station.
 DE9119
 DE9119_MARKER: DV = VERTICAL CONTROL DISK
 DE9119_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 DE9119+WITH SETTING: PAVEMENT
 DE9119_SP_SET: FLAGPOLE BASE
 DE9119_STAMPING: D 201 2002
 DE9119_MARK LOGO: NGS
 DE9119_MAGNETIC: N = NO MAGNETIC MATERIAL
 DE9119_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DE9119+STABILITY: SURFACE MOTION
 DE9119_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DE9119+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2015
 DE9119
 DE9119  HISTORY     - Date     Condition        Report By
 DE9119  HISTORY     - 2002     MONUMENTED       NGS
 DE9119  HISTORY     - 20150514 GOOD             ARCSHE
 DE9119
 DE9119                          STATION DESCRIPTION
 DE9119
 DE9119'DESCRIBED BY NATIONAL GEODETIC SURVEY 2002 (DBC)
 DE9119'TO REACH THE STATION FROM THE INTERSECTIONS OF MARYLAND
 DE9119'AVENUE/RICHARDSON AVENUE (US HIGHWAY 413) SOMERSET AVENUE AND
 DE9119'JACKSONVILLE ROAD NEAR THE CITY WATER TANK IN CRISFIELD.  GO 1.95
 DE9119'MILES (3.14 KM) NORTHEASTERLY ALONG JACKSONVILLE ROAD TO THE JUNCTION
 DE9119'OF CHARLES BRIDDELL DRIVE/AVIATORS WAY (ENTRANCE ROAD TO THE
 DE9119'CRISFIELD-SOMERSET COUNTY AIRPORT) ON THE LEFT, NOTE-AT THIS POINT
 DE9119'JACKSONVILLE ROAD ENDS AND TURNS INTO PLANTATION ROAD, CONTINUE AHEAD
 DE9119'SOUTHEASTERLY ON PLANTATION ROAD FOR 0.2 MILES (0.3 KM) TO THE
 DE9119'JUNCTION OF ST PETERS CHURCH ROAD ON THE LEFT, TURN LEFT, NORTHEAST,
 DE9119'ON ST PETERS CHURCH ROAD FOR 0.4 MILE (0.6 KM) TO A FLAG POLE AT THE
 DE9119'MAIN ENTRANCE ROAD OF THE SUNNY RIDGE CEMETERY AND THE STATION ON THE
 DE9119'LEFT.  THE STATION CAN ALSO BE REACHED BY GOING 0.4 MILE (0.6 KM)
 DE9119'NORTHWEST ALONG STATE HIGHWAY 667 FROM THE INTERSECTION OF STATE
 DE9119'HIGHWAY 413 IN HOPEWELL, TO A CURVE AND ST PETERS CHURCH ROAD, THENCE
 DE9119'0.1 MI (0.16 KM) WEST ALONG ST PETERS CHURCH ROAD TO MARK ON RIGHT,
 DE9119'THE STATION IS AN NGS VERTICAL CONTROL DISK SET IN THE TOP OF THE
 DE9119'SOUTH SIDE OF THE BASE OF THE FLAGPOLE FOR THE CEMETERY, LOCATED 21.0
 DE9119'FEET (6.4 M) NORTHWEST OF THE CENTER OF THE ROAD, 24.8 FEET (7.6 M)
 DE9119'WEST SOUTHWEST OF THE WEST CORNER OF A 6.0 FOOT (1.8 M) HIGH BRICK
 DE9119'ENTRANCE POST ON THE SOUTHWEST SIDE OF THE ENTRANCE ROAD, 33.6 FEET
 DE9119'(10.2 M) SOUTHWEST OF THE SOUTHWEST CORNER OF A TOMB STONE INSCRIBED
 DE9119'POWELL AND 1.4 FEET (0.4 M) SOUTH SOUTHEAST OF THE ALUMINUM BASE OF
 DE9119'THE FLAG POLE AND FLUSH WITH GROUND.
 DE9119
 DE9119                          STATION RECOVERY (2015)
 DE9119
 DE9119'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 DE9119'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0870 ***********************************************************************
 JV0870  DESIGNATION -  D 25
 JV0870  PID         -  JV0870
 JV0870  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0870  COUNTRY     -  US
 JV0870  USGS QUAD   -  BELTSVILLE (2016)
 JV0870
 JV0870                         *CURRENT SURVEY CONTROL
 JV0870  ______________________________________________________________________
 JV0870* NAD 83(1986) POSITION- 39 02 37.     (N) 076 56 21.     (W)   SCALED
 JV0870* NAVD 88 ORTHO HEIGHT -    69.988 (meters)      229.62  (feet) ADJUSTED
 JV0870  ______________________________________________________________________
 JV0870  GEOID HEIGHT    -        -32.089 (meters)                     GEOID18
 JV0870  DYNAMIC HEIGHT  -         69.951 (meters)      229.50  (feet) COMP
 JV0870  MODELED GRAVITY -    980,098.7   (mgal)                       NAVD 88
 JV0870
 JV0870  VERT ORDER      -  SECOND    CLASS 0
 JV0870
 JV0870.The horizontal coordinates were scaled from a map and have
 JV0870.an estimated accuracy of +/- 6 seconds.
 JV0870
 JV0870.The orthometric height was determined by differential leveling and
 JV0870.adjusted by the NATIONAL GEODETIC SURVEY
 JV0870.in June 1991.
 JV0870
 JV0870.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0870.GEOID18 height accuracy estimate available here.
 JV0870
 JV0870.Click photographs - Photos may exist for this station.
 JV0870
 JV0870.The dynamic height is computed by dividing the NAVD 88
 JV0870.geopotential number by the normal gravity value computed on the
 JV0870.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0870.degrees latitude (g = 980.6199 gals.).
 JV0870
 JV0870.The modeled gravity was interpolated from observed gravity values.
 JV0870
 JV0870;                    North         East    Units  Estimated Accuracy
 JV0870;SPC MD       -   152,850.      405,270.      MT  (+/- 180 meters Scaled)
 JV0870
 JV0870_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ321234(NAD 83)
 JV0870
 JV0870                          SUPERSEDED SURVEY CONTROL
 JV0870
 JV0870  NGVD 29 (11/26/84)   70.202  (m)          230.32   (f) ADJUSTED    2 0
 JV0870
 JV0870.Superseded values are not recommended for survey control.
 JV0870
 JV0870.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0870.See file dsdata.pdf to determine how the superseded data were derived.
 JV0870
 JV0870_MARKER: DB = BENCH MARK DISK
 JV0870_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0870_STAMPING: D 25 1957
 JV0870_MARK LOGO: CGS
 JV0870_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0870+STABILITY: SURFACE MOTION
 JV0870
 JV0870  HISTORY     - Date     Condition        Report By
 JV0870  HISTORY     - 1957     MONUMENTED       CGS
 JV0870  HISTORY     - 20020130 MARK NOT FOUND   MDSHA
 JV0870
 JV0870                          STATION DESCRIPTION
 JV0870
 JV0870'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0870'1.8 MI WNW FROM BELTSVILLE.
 JV0870'FROM THE JUNCTION OF U.S. HIGHWAY 1 AND CHERRY HILL ROAD ABOUT
 JV0870'2 MILES SOUTH-SOUTHWEST OF BELTSVILLE, GO NORTHWEST ON CHERRY
 JV0870'HILL ROAD 2 MILES TO POWDER MILL ROAD, TURN RIGHT (NORTH) ON
 JV0870'POWDER MILL ROAD (STATE 212) 0.65 MILE.  THENCE RIGHT (EAST) ON
 JV0870'GRAVELED ROAD 0.1 MILE TO CROSSROAD.  THE MARK IS 36 FEET EAST OF
 JV0870'THE CENTERLINE OF THE ROAD, 28 FEET SOUTH OF THE CENTERLINE OF
 JV0870'ROAD, 10.5 FEET EAST OF POWERLINE POLE NO. 827540 AND 2 FEET WEST
 JV0870'OF A WHITE WITNESS POST.  THE DISK IS SET IN A SQUARE CONCRETE
 JV0870'POST WHICH PROJECTS 4 INCHES AND THE DISK IS STAMPED D 25 1957.
 JV0870
 JV0870                          STATION RECOVERY (2002)
 JV0870
 JV0870'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV0870'THE STATION WAS SEARCHED FOR AND NOT RECOVERED. THE AREA HAS BEEN
 JV0870'DEVELOPED FOR AN APPARTMENT COMPLEX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0923 ***********************************************************************
 JV0923  DESIGNATION -  D 26
 JV0923  PID         -  JV0923
 JV0923  STATE/COUNTY-  MD/BALTIMORE
 JV0923  COUNTRY     -  US
 JV0923  USGS QUAD   -  RELAY (2016)
 JV0923
 JV0923                         *CURRENT SURVEY CONTROL
 JV0923  ______________________________________________________________________
 JV0923* NAD 83(1986) POSITION- 39 14 32.     (N) 076 40 19.     (W)   SCALED
 JV0923* NAVD 88 ORTHO HEIGHT -    15.311 (meters)       50.23  (feet) ADJUSTED
 JV0923  ______________________________________________________________________
 JV0923  GEOID HEIGHT    -        -32.623 (meters)                     GEOID18
 JV0923  DYNAMIC HEIGHT  -         15.303 (meters)       50.21  (feet) COMP
 JV0923  MODELED GRAVITY -    980,101.2   (mgal)                       NAVD 88
 JV0923
 JV0923  VERT ORDER      -  SECOND    CLASS 0
 JV0923
 JV0923.The horizontal coordinates were scaled from a map and have
 JV0923.an estimated accuracy of +/- 6 seconds.
 JV0923
 JV0923.The orthometric height was determined by differential leveling and
 JV0923.adjusted by the NATIONAL GEODETIC SURVEY
 JV0923.in June 1991.
 JV0923
 JV0923.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0923.GEOID18 height accuracy estimate available here.
 JV0923
 JV0923.Click photographs - Photos may exist for this station.
 JV0923
 JV0923.The dynamic height is computed by dividing the NAVD 88
 JV0923.geopotential number by the normal gravity value computed on the
 JV0923.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0923.degrees latitude (g = 980.6199 gals.).
 JV0923
 JV0923.The modeled gravity was interpolated from observed gravity values.
 JV0923
 JV0923;                    North         East    Units  Estimated Accuracy
 JV0923;SPC MD       -   174,950.      428,320.      MT  (+/- 180 meters Scaled)
 JV0923
 JV0923_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ557449(NAD 83)
 JV0923
 JV0923                          SUPERSEDED SURVEY CONTROL
 JV0923
 JV0923  NGVD 29 (11/26/84)   15.544  (m)           51.00   (f) ADJUSTED    2 0
 JV0923
 JV0923.Superseded values are not recommended for survey control.
 JV0923
 JV0923.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0923.See file dsdata.pdf to determine how the superseded data were derived.
 JV0923
 JV0923_MARKER: DB = BENCH MARK DISK
 JV0923_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0923_SP_SET: CULVERT
 JV0923_STAMPING: D 26 1957
 JV0923_MARK LOGO: CGS
 JV0923_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0923
 JV0923  HISTORY     - Date     Condition        Report By
 JV0923  HISTORY     - 1957     MONUMENTED       CGS
 JV0923  HISTORY     - 1970     GOOD             MDSRC
 JV0923
 JV0923                          STATION DESCRIPTION
 JV0923
 JV0923'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0923'0.5 MI SE FROM HALETHORPE.
 JV0923'FROM INTERSECTION OF U.S. HIGHWAY 1 AND SULPHUR SPRING ROAD AT
 JV0923'HALETHORPE, GO EAST ON SULPHUR SPRING ROAD 0.05 MILE TO A LANE
 JV0923'LEADING UP TO NEW ROAD UNDER CONSTRUCTION.  HERE CONTINUE SOUTH
 JV0923'ON NEW ROAD 0.15 MILE TO CULVERT.  MARK IS SET IN THE EAST
 JV0923'HEADWALL OF CULVERT AND 1 FOOT SOUTH OF NORTH END OF HEADWALL.
 JV0923'DISK IS STAMPED D 26 1957.
 JV0923
 JV0923                          STATION RECOVERY (1970)
 JV0923
 JV0923'RECOVERY NOTE BY MD STATE ROADS COMM 1970
 JV0923'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3575 ***********************************************************************
 JV3575  DESIGNATION -  D 27
 JV3575  PID         -  JV3575
 JV3575  STATE/COUNTY-  MD/WASHINGTON
 JV3575  COUNTRY     -  US
 JV3575  USGS QUAD   -  FUNKSTOWN (2017)
 JV3575
 JV3575                         *CURRENT SURVEY CONTROL
 JV3575  ______________________________________________________________________
 JV3575* NAD 83(1986) POSITION- 39 33 46.62   (N) 077 38 47.45   (W)   HD_HELD1
 JV3575* NAVD 88 ORTHO HEIGHT -   163.113 (meters)      535.15  (feet) ADJUSTED
 JV3575  ______________________________________________________________________
 JV3575  GEOID HEIGHT    -        -33.737 (meters)                     GEOID18
 JV3575  DYNAMIC HEIGHT  -        163.019 (meters)      534.84  (feet) COMP
 JV3575  MODELED GRAVITY -    980,045.2   (mgal)                       NAVD 88
 JV3575
 JV3575  VERT ORDER      -  SECOND    CLASS 0
 JV3575
 JV3575.The horizontal coordinates were determined by differentially corrected
 JV3575.hand held GPS observations or other comparable positioning techniques
 JV3575.and have an estimated accuracy of +/- 3 meters.
 JV3575
 JV3575.The orthometric height was determined by differential leveling and
 JV3575.adjusted by the NATIONAL GEODETIC SURVEY
 JV3575.in June 1991.
 JV3575
 JV3575.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3575.GEOID18 height accuracy estimate available here.
 JV3575
 JV3575.Click photographs - Photos may exist for this station.
 JV3575
 JV3575.The dynamic height is computed by dividing the NAVD 88
 JV3575.geopotential number by the normal gravity value computed on the
 JV3575.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3575.degrees latitude (g = 980.6199 gals.).
 JV3575
 JV3575.The modeled gravity was interpolated from observed gravity values.
 JV3575
 JV3575;                    North         East    Units  Estimated Accuracy
 JV3575;SPC MD       -   210,700.8     344,440.6     MT  (+/- 3 meters HH1 GPS) 
 JV3575
 JV3575_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7264582596(NAD 83)
 JV3575
 JV3575                          SUPERSEDED SURVEY CONTROL
 JV3575
 JV3575  NGVD 29 (11/26/84)  163.318  (m)          535.82   (f) ADJUSTED    2 0
 JV3575
 JV3575.Superseded values are not recommended for survey control.
 JV3575
 JV3575.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3575.See file dsdata.pdf to determine how the superseded data were derived.
 JV3575
 JV3575_MARKER: DB = BENCH MARK DISK
 JV3575_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3575_STAMPING: D 27 1957
 JV3575_MARK LOGO: CGS
 JV3575_PROJECTION: FLUSH
 JV3575_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3575+STABILITY: SURFACE MOTION
 JV3575_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3575+SATELLITE: SATELLITE OBSERVATIONS - April 22, 2020
 JV3575
 JV3575  HISTORY     - Date     Condition        Report By
 JV3575  HISTORY     - 1957     MONUMENTED       CGS
 JV3575  HISTORY     - 1958     GOOD             CGS
 JV3575  HISTORY     - 20080208 MARK NOT FOUND   GEOCAC
 JV3575  HISTORY     - 20081223 GOOD             MDSHA
 JV3575  HISTORY     - 20200422 GOOD             WSRR
 JV3575
 JV3575                          STATION DESCRIPTION
 JV3575
 JV3575'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3575'4.4 MI SE FROM FUNKSTOWN.
 JV3575'1.5 MILES SOUTHEAST ALONG BEAVER CREEK ROAD FROM THE JUNCTION OF
 JV3575'HEBB ROAD AT FUNKSTOWN, THENCE 2.3 MILES SOUTHEAST ALONG U.S.
 JV3575'HIGHWAY 40, THENCE 0.6 MILE SOUTH ALONG STATE HIGHWAY 66,
 JV3575'NORTHWEST OF THE HIGHWAY, 6.5 FEET SOUTHWEST OF A FENCE CORNER
 JV3575'POST, 1.0 FOOT SOUTH OF A FENCE, 2.0 FEET SOUTHWEST OF A WITNESS
 JV3575'POST, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.6 FOOT
 JV3575'ABOVE THE GROUND.
 JV3575
 JV3575                          STATION RECOVERY (2008)
 JV3575
 JV3575'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3575'NO FENCE, NO POSTS, NO WITNESS POST.  NO CONCRETE MONUMENT WAS
 JV3575'DISCOVERED.
 JV3575
 JV3575                          STATION RECOVERY (2008)
 JV3575
 JV3575'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 JV3575'RECOVERED IN GOOD CONDITION.
 JV3575
 JV3575                          STATION RECOVERY (2020)
 JV3575
 JV3575'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV3575'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1115 ***********************************************************************
 HV1115  DESIGNATION -  D 28 RESET
 HV1115  PID         -  HV1115
 HV1115  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1115  COUNTRY     -  US
 HV1115  USGS QUAD   -  ANACOSTIA (2016)
 HV1115
 HV1115                         *CURRENT SURVEY CONTROL
 HV1115  ______________________________________________________________________
 HV1115* NAD 83(1986) POSITION- 38 49 14.     (N) 076 53 07.     (W)   SCALED
 HV1115* NAVD 88 ORTHO HEIGHT -    81.05  (+/-2cm)      265.9   (feet) VERTCON3
 HV1115  ______________________________________________________________________
 HV1115  GEOID HEIGHT    -        -32.499 (meters)                     GEOID18
 HV1115  VERT ORDER      -  THIRD (See Below)
 HV1115
 HV1115.The horizontal coordinates were scaled from a map and have
 HV1115.an estimated accuracy of +/- 6 seconds.
 HV1115
 HV1115.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1115.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1115
 HV1115.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1115.GEOID18 height accuracy estimate available here.
 HV1115
 HV1115.The vertical order pertains to the NGVD 29 superseded value.
 HV1115
 HV1115.Click photographs - Photos may exist for this station.
 HV1115
 HV1115;                    North         East    Units  Estimated Accuracy
 HV1115;SPC MD       -   128,090.      409,960.      MT  (+/- 180 meters Scaled)
 HV1115
 HV1115_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH363985(NAD 83)
 HV1115
 HV1115                          SUPERSEDED SURVEY CONTROL
 HV1115
 HV1115  NGVD 29 (??/??/??)   81.29   (m)          266.7    (f) RESET       3  
 HV1115
 HV1115.Superseded values are not recommended for survey control.
 HV1115
 HV1115.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1115.See file dsdata.pdf to determine how the superseded data were derived.
 HV1115
 HV1115_MARKER: DB = BENCH MARK DISK
 HV1115_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV1115_SP_SET: CULVERT
 HV1115_STAMPING: D 28 RESET 1961
 HV1115_MARK LOGO: CGS
 HV1115_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1115
 HV1115  HISTORY     - Date     Condition        Report By
 HV1115  HISTORY     - 1961     MONUMENTED       CGS
 HV1115  HISTORY     - 1968     GOOD             CGS
 HV1115
 HV1115                          STATION DESCRIPTION
 HV1115
 HV1115'DESCRIBED BY COAST AND GEODETIC SURVEY 1961
 HV1115'1.7 MI NE FROM CAMP SPRINGS.
 HV1115'ABOUT 1.6 MILES NORTHEAST ALONG STATE HIGHWAY 337 FROM THE
 HV1115'INTERSECTION OF STATE HIGHWAY 5 AT CAMP SPRINGS, THENCE 0.1
 HV1115'MILES EAST ALONG ANDREWS AIR FORCE BASE ROAD TO THE JUNCTION OF AIR
 HV1115'FORCE BASE ROAD (FLORIDA) AND PERIMITER ROAD, 27 FEET WEST OF
 HV1115'THE CENTER LINE OF PERIMITER ROAD, 125 FEET NORTH OF THE CENTER
 HV1115'LINE OF FLORIDA ROAD, SET IN THE TOP OF THE WEST HEADWALL OF A
 HV1115'2 1/2 FOOT PIPE CULVERT, 2 FEET NORTH OF THE SOUTH END OF THE
 HV1115'HEADWALL, AND ABOUT LEVEL WITH THE ROAD.
 HV1115
 HV1115                          STATION RECOVERY (1968)
 HV1115
 HV1115'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968
 HV1115'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1163 ***********************************************************************
 JV1163  DESIGNATION -  D 29
 JV1163  PID         -  JV1163
 JV1163  STATE/COUNTY-  MD/BALTIMORE
 JV1163  COUNTRY     -  US
 JV1163  USGS QUAD   -  TOWSON (2016)
 JV1163
 JV1163                         *CURRENT SURVEY CONTROL
 JV1163  ______________________________________________________________________
 JV1163* NAD 83(1986) POSITION- 39 24 31.     (N) 076 34 42.     (W)   SCALED
 JV1163* NAVD 88 ORTHO HEIGHT -   127.353 (meters)      417.82  (feet) ADJUSTED
 JV1163  ______________________________________________________________________
 JV1163  GEOID HEIGHT    -        -32.621 (meters)                     GEOID18
 JV1163  DYNAMIC HEIGHT  -        127.284 (meters)      417.60  (feet) COMP
 JV1163  MODELED GRAVITY -    980,083.1   (mgal)                       NAVD 88
 JV1163
 JV1163  VERT ORDER      -  SECOND    CLASS 0
 JV1163
 JV1163.The horizontal coordinates were scaled from a map and have
 JV1163.an estimated accuracy of +/- 6 seconds.
 JV1163
 JV1163.The orthometric height was determined by differential leveling and
 JV1163.adjusted by the NATIONAL GEODETIC SURVEY
 JV1163.in June 1991.
 JV1163
 JV1163.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1163.GEOID18 height accuracy estimate available here.
 JV1163
 JV1163.Click photographs - Photos may exist for this station.
 JV1163
 JV1163.The dynamic height is computed by dividing the NAVD 88
 JV1163.geopotential number by the normal gravity value computed on the
 JV1163.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1163.degrees latitude (g = 980.6199 gals.).
 JV1163
 JV1163.The modeled gravity was interpolated from observed gravity values.
 JV1163
 JV1163;                    North         East    Units  Estimated Accuracy
 JV1163;SPC MD       -   193,450.      436,320.      MT  (+/- 180 meters Scaled)
 JV1163
 JV1163_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ641633(NAD 83)
 JV1163
 JV1163                          SUPERSEDED SURVEY CONTROL
 JV1163
 JV1163  NGVD 29 (11/26/84)  127.581  (m)          418.57   (f) ADJUSTED    2 0
 JV1163
 JV1163.Superseded values are not recommended for survey control.
 JV1163
 JV1163.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1163.See file dsdata.pdf to determine how the superseded data were derived.
 JV1163
 JV1163_MARKER: DB = BENCH MARK DISK
 JV1163_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1163_SP_SET: BRIDGE
 JV1163_STAMPING: D 29 1958
 JV1163_MARK LOGO: CGS
 JV1163_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1163
 JV1163  HISTORY     - Date     Condition        Report By
 JV1163  HISTORY     - 1958     MONUMENTED       CGS
 JV1163  HISTORY     - 1959     GOOD             CGS
 JV1163  HISTORY     - 19950806 MARK NOT FOUND   USPSQD
 JV1163  HISTORY     - 20020406 MARK NOT FOUND   USPSQD
 JV1163
 JV1163                          STATION DESCRIPTION
 JV1163
 JV1163'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1163'1.9 MI ESE FROM TOWSON.
 JV1163'1.9 MILES EAST-SOUTHEAST ALONG THE BALTIMORE BELTWAY FROM THE
 JV1163'DOUBLE OVERHEAD YORK ROAD BRIDGE OVER THE BELTWAY, AT THE LARGE
 JV1163'PROVIDENCE ROAD OVERHEAD BRIDGE, SET VERTICALLY IN THE NORTH
 JV1163'CONCRETE FACE AND NEAR THE WEST END OF THE CENTER PIER SUPPORTING
 JV1163'THE OVERHEAD ROAD, 2 FEET EAST OF THE WEST END OF THE PIER AND
 JV1163'4 FEET ABOVE THE LEVEL OF THE BELTWAY.
 JV1163
 JV1163                          STATION RECOVERY (1995)
 JV1163
 JV1163'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1163'MARK NOT FOUND.
 JV1163
 JV1163                          STATION RECOVERY (2002)
 JV1163
 JV1163'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 JV1163'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0171 ***********************************************************************
 JV0171  DESIGNATION -  D 3
 JV0171  PID         -  JV0171
 JV0171  STATE/COUNTY-  MD/CECIL
 JV0171  COUNTRY     -  US
 JV0171  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0171
 JV0171                         *CURRENT SURVEY CONTROL
 JV0171  ______________________________________________________________________
 JV0171* NAD 83(1986) POSITION- 39 35 53.16   (N) 076 01 08.24   (W)   HD_HELD1
 JV0171* NAVD 88 ORTHO HEIGHT -    55.673 (meters)      182.65  (feet) ADJUSTED
 JV0171  ______________________________________________________________________
 JV0171  GEOID HEIGHT    -        -33.121 (meters)                     GEOID18
 JV0171  DYNAMIC HEIGHT  -         55.645 (meters)      182.56  (feet) COMP
 JV0171  MODELED GRAVITY -    980,126.6   (mgal)                       NAVD 88
 JV0171
 JV0171  VERT ORDER      -  FIRST     CLASS II
 JV0171
 JV0171.The horizontal coordinates were determined by differentially corrected
 JV0171.hand held GPS observations or other comparable positioning techniques
 JV0171.and have an estimated accuracy of +/- 3 meters.
 JV0171
 JV0171.The orthometric height was determined by differential leveling and
 JV0171.adjusted by the NATIONAL GEODETIC SURVEY
 JV0171.in June 1991.
 JV0171
 JV0171.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0171.GEOID18 height accuracy estimate available here.
 JV0171
 JV0171.Click photographs - Photos may exist for this station.
 JV0171
 JV0171.The dynamic height is computed by dividing the NAVD 88
 JV0171.geopotential number by the normal gravity value computed on the
 JV0171.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0171.degrees latitude (g = 980.6199 gals.).
 JV0171
 JV0171.The modeled gravity was interpolated from observed gravity values.
 JV0171
 JV0171;                    North         East    Units  Estimated Accuracy
 JV0171;SPC MD       -   214,859.6     484,265.1     MT  (+/- 3 meters HH1 GPS) 
 JV0171
 JV0171_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1251383647(NAD 83)
 JV0171
 JV0171                          SUPERSEDED SURVEY CONTROL
 JV0171
 JV0171  NGVD 29 (11/26/84)   55.978  (m)          183.65   (f) ADJUSTED    1 2
 JV0171
 JV0171.Superseded values are not recommended for survey control.
 JV0171
 JV0171.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0171.See file dsdata.pdf to determine how the superseded data were derived.
 JV0171
 JV0171_MARKER: DB = BENCH MARK DISK
 JV0171_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0171_STAMPING: D 3 1931 183.654
 JV0171_MARK LOGO: CGS
 JV0171_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0171+STABILITY: SURFACE MOTION
 JV0171
 JV0171  HISTORY     - Date     Condition        Report By
 JV0171  HISTORY     - 1931     MONUMENTED       CGS
 JV0171  HISTORY     - 1964     GOOD             CGS
 JV0171
 JV0171                          STATION DESCRIPTION
 JV0171
 JV0171'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0171'3.3 MI NE FROM AIKIN.
 JV0171'ABOUT 3.3 MILES NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0171'FROM THE STATION AT AIKIN, ABOUT 0.2 MILE EAST OF AND OVERHEAD
 JV0171'BRIDGE.  2 1/2 RAILS WEST OF MILEPOST NO. P-53-B 43, 96 FEET
 JV0171'NORTH OF NORTH RAIL, 24 FEET NORTH OF CENTER OF ROAD THAT IS
 JV0171'PARALLEL WITH THE TRACKS, 7.5 FEET SOUTH OF THE RIGHT-OF-WAY
 JV0171'FENCE, AND 1 FOOT SOUTH OF THE METAL WITNESS POST.  A STANDARD
 JV0171'DISK IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES AND IT IS
 JV0171'ABOUT 3 FEET ABOVE THE LEVEL OF THE TRACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1129 ***********************************************************************
 JV1129  DESIGNATION -  D 30 C OF B
 JV1129  PID         -  JV1129
 JV1129  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1129  COUNTRY     -  US
 JV1129  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1129
 JV1129                         *CURRENT SURVEY CONTROL
 JV1129  ______________________________________________________________________
 JV1129* NAD 83(1986) POSITION- 39 17 27.     (N) 076 36 21.     (W)   SCALED
 JV1129* NAVD 88 ORTHO HEIGHT -     4.121 (meters)       13.52  (feet) ADJUSTED
 JV1129  ______________________________________________________________________
 JV1129  GEOID HEIGHT    -        -32.742 (meters)                     GEOID18
 JV1129  DYNAMIC HEIGHT  -          4.119 (meters)       13.51  (feet) COMP
 JV1129  MODELED GRAVITY -    980,104.0   (mgal)                       NAVD 88
 JV1129
 JV1129  VERT ORDER      -  FIRST     CLASS I
 JV1129
 JV1129.The horizontal coordinates were scaled from a map and have
 JV1129.an estimated accuracy of +/- 6 seconds.
 JV1129
 JV1129.The orthometric height was determined by differential leveling and
 JV1129.adjusted by the NATIONAL GEODETIC SURVEY
 JV1129.in June 1991.
 JV1129
 JV1129.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1129.GEOID18 height accuracy estimate available here.
 JV1129
 JV1129.Click photographs - Photos may exist for this station.
 JV1129
 JV1129.The dynamic height is computed by dividing the NAVD 88
 JV1129.geopotential number by the normal gravity value computed on the
 JV1129.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1129.degrees latitude (g = 980.6199 gals.).
 JV1129
 JV1129.The modeled gravity was interpolated from observed gravity values.
 JV1129
 JV1129;                    North         East    Units  Estimated Accuracy
 JV1129;SPC MD       -   180,370.      434,000.      MT  (+/- 180 meters Scaled)
 JV1129
 JV1129_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ615502(NAD 83)
 JV1129
 JV1129                          SUPERSEDED SURVEY CONTROL
 JV1129
 JV1129  NGVD 29 (11/26/84)    4.364  (m)           14.32   (f) ADJUSTED    1 1
 JV1129
 JV1129.Superseded values are not recommended for survey control.
 JV1129
 JV1129.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1129.See file dsdata.pdf to determine how the superseded data were derived.
 JV1129
 JV1129_STAMPING: D 30
 JV1129
 JV1129  HISTORY     - Date     Condition        Report By
 JV1129  HISTORY     - UNK      MONUMENTED       MD0050
 JV1129  HISTORY     - 1959     GOOD             CGS
 JV1129  HISTORY     - 1971     GOOD             NGS
 JV1129  HISTORY     - 20170820 MARK NOT FOUND   GEOCAC
 JV1129
 JV1129                          STATION DESCRIPTION
 JV1129
 JV1129'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1129'AT BALTIMORE.
 JV1129'AT BALTIMORE, AT THE SOUTHWEST CORNER OF THE INTERSECTION OF
 JV1129'FALLSWAY AND EAST FAYETTE STREET, 7 1/2 FEET WEST OF THE WEST
 JV1129'CURB OF FALLSWAY, 8 FEET SOUTH OF THE SOUTH CURB OF EAST FAYETTE
 JV1129'STREET, 2 INCHES BELOW THE LEVEL OF THE SIDEWALK AND SET IN THE
 JV1129'TOP OF A CONCRETE POST WHICH IS PROTECTED BY A CAST IRON COVER
 JV1129'MARKED CITY OF BALTIMORE SURVEY POINT.
 JV1129
 JV1129                          STATION RECOVERY (1971)
 JV1129
 JV1129'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1129'RECOVERED IN GOOD CONDITION.
 JV1129
 JV1129                          STATION RECOVERY (2017)
 JV1129
 JV1129'RECOVERY NOTE BY GEOCACHING 2017 (RLM)
 JV1129'THE MARK WAS SEARCHED FOR AND NOT FOUND.  THE SIDEWALK HAS BEEN
 JV1129'REPLACED AND THE REPLACEMENT WALK HAS NO ACCESS TO THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0415 ***********************************************************************
 JV0415  DESIGNATION -  D 31
 JV0415  PID         -  JV0415
 JV0415  STATE/COUNTY-  MD/HARFORD
 JV0415  COUNTRY     -  US
 JV0415  USGS QUAD   -  EDGEWOOD (2016)
 JV0415
 JV0415                         *CURRENT SURVEY CONTROL
 JV0415  ______________________________________________________________________
 JV0415* NAD 83(1986) POSITION- 39 25 44.8    (N) 076 22 18.0    (W)   HD_HELD2
 JV0415* NAVD 88 ORTHO HEIGHT -    30.054 (meters)       98.60  (feet) ADJUSTED
 JV0415  ______________________________________________________________________
 JV0415  GEOID HEIGHT    -        -32.991 (meters)                     GEOID18
 JV0415  DYNAMIC HEIGHT  -         30.038 (meters)       98.55  (feet) COMP
 JV0415  MODELED GRAVITY -    980,102.3   (mgal)                       NAVD 88
 JV0415
 JV0415  VERT ORDER      -  FIRST     CLASS I
 JV0415
 JV0415.The horizontal coordinates were established by autonomous hand held GPS
 JV0415.observations and have an estimated accuracy of +/- 10 meters.
 JV0415
 JV0415.The orthometric height was determined by differential leveling and
 JV0415.adjusted by the NATIONAL GEODETIC SURVEY
 JV0415.in June 1991.
 JV0415
 JV0415.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0415.GEOID18 height accuracy estimate available here.
 JV0415
 JV0415.Click photographs - Photos may exist for this station.
 JV0415
 JV0415.The dynamic height is computed by dividing the NAVD 88
 JV0415.geopotential number by the normal gravity value computed on the
 JV0415.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0415.degrees latitude (g = 980.6199 gals.).
 JV0415
 JV0415.The modeled gravity was interpolated from observed gravity values.
 JV0415
 JV0415;                    North         East    Units  Estimated Accuracy
 JV0415;SPC MD       -   195,831.      454,099.      MT  (+/- 10 meters HH2 GPS)
 JV0415
 JV0415_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8194365294(NAD 83)
 JV0415
 JV0415                          SUPERSEDED SURVEY CONTROL
 JV0415
 JV0415  NGVD 29 (11/26/84)   30.299  (m)           99.41   (f) ADJUSTED    1 1
 JV0415
 JV0415.Superseded values are not recommended for survey control.
 JV0415
 JV0415.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0415.See file dsdata.pdf to determine how the superseded data were derived.
 JV0415
 JV0415_MARKER: DB = BENCH MARK DISK
 JV0415_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0415_STAMPING: D 31 1959
 JV0415_MARK LOGO: CGS
 JV0415_PROJECTION: PROJECTING 8 CENTIMETERS
 JV0415_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0415+STABILITY: SURFACE MOTION
 JV0415_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0415+SATELLITE: SATELLITE OBSERVATIONS - March 13, 2019
 JV0415
 JV0415  HISTORY     - Date     Condition        Report By
 JV0415  HISTORY     - 1959     MONUMENTED       CGS
 JV0415  HISTORY     - 1971     GOOD             NGS
 JV0415  HISTORY     - 1991     GOOD             USPSQD
 JV0415  HISTORY     - 20190313 GOOD             ARCSHE
 JV0415
 JV0415                          STATION DESCRIPTION
 JV0415
 JV0415'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0415'1.8 MI W FROM JOPPA.
 JV0415'ABOUT 1.85 MILES WEST ALONG STATE HIGHWAY 7 FROM THE TRINITY
 JV0415'LUTHERAN CHURCH AND CEMETERY AT JOPPA, ABOUT 0.6 MILE WEST OF
 JV0415'THE JUNCTION OF OLD JOPPA ROAD, 27 FEET NORTH OF THE CENTER LINE
 JV0415'OF THE HIGHWAY, 46 FEET NORTHWEST OF THE CENTER OF THE
 JV0415'INTERSECTION OF THE HIGHWAY AND A DRIVEWAY, 50 FEET WEST-NORTHWEST
 JV0415'OF A BELL TELEPHONE COMPANY MANHOLE, 29 FEET NORTHEAST AND ACROSS
 JV0415'THE HIGHWAY FROM POWER POLE NUMBER 56719, 1.0 FOOT EAST OF A
 JV0415'METAL WITNESS POST, ABOUT 2 FEET ABOVE THE LEVEL OF THE HIGHWAY,
 JV0415'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES.
 JV0415'NOTE-- THIS MARK IS ALSO 0.1 MILE EAST OF THE JUNCTION OF THE
 JV0415'HIGHWAY AND BULLS LANE LEADING NORTHWEST.
 JV0415
 JV0415                          STATION RECOVERY (1991)
 JV0415
 JV0415'RECOVERY NOTE BY US POWER SQUADRON 1991 (RDB)
 JV0415'RECOVERED IN GOOD CONDITION.
 JV0415
 JV0415                          STATION RECOVERY (2019)
 JV0415
 JV0415'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 JV0415'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2171 ***********************************************************************
 JV2171  DESIGNATION -  D 34
 JV2171  PID         -  JV2171
 JV2171  STATE/COUNTY-  MD/MONTGOMERY
 JV2171  COUNTRY     -  US
 JV2171  USGS QUAD   -  KENSINGTON (2016)
 JV2171
 JV2171                         *CURRENT SURVEY CONTROL
 JV2171  ______________________________________________________________________
 JV2171* NAD 83(1986) POSITION- 39 03 16.     (N) 077 06 41.     (W)   SCALED
 JV2171* NAVD 88 ORTHO HEIGHT -   112.456 (meters)      368.95  (feet) ADJUSTED
 JV2171  ______________________________________________________________________
 JV2171  GEOID HEIGHT    -        -31.791 (meters)                     GEOID18
 JV2171  DYNAMIC HEIGHT  -        112.397 (meters)      368.76  (feet) COMP
 JV2171  MODELED GRAVITY -    980,097.2   (mgal)                       NAVD 88
 JV2171
 JV2171  VERT ORDER      -  FIRST     CLASS II
 JV2171
 JV2171.The horizontal coordinates were scaled from a map and have
 JV2171.an estimated accuracy of +/- 6 seconds.
 JV2171
 JV2171.The orthometric height was determined by differential leveling and
 JV2171.adjusted by the NATIONAL GEODETIC SURVEY
 JV2171.in June 1991.
 JV2171
 JV2171.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2171.GEOID18 height accuracy estimate available here.
 JV2171
 JV2171.Click photographs - Photos may exist for this station.
 JV2171
 JV2171.The dynamic height is computed by dividing the NAVD 88
 JV2171.geopotential number by the normal gravity value computed on the
 JV2171.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2171.degrees latitude (g = 980.6199 gals.).
 JV2171
 JV2171.The modeled gravity was interpolated from observed gravity values.
 JV2171
 JV2171;                    North         East    Units  Estimated Accuracy
 JV2171;SPC MD       -   154,060.      390,360.      MT  (+/- 180 meters Scaled)
 JV2171
 JV2171_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ173249(NAD 83)
 JV2171
 JV2171                          SUPERSEDED SURVEY CONTROL
 JV2171
 JV2171  NGVD 29 (11/26/84)  112.676  (m)          369.67   (f) ADJUSTED    1 2
 JV2171
 JV2171.Superseded values are not recommended for survey control.
 JV2171
 JV2171.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2171.See file dsdata.pdf to determine how the superseded data were derived.
 JV2171
 JV2171_MARKER: DB = BENCH MARK DISK
 JV2171_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2171_SP_SET: OVERPASS
 JV2171_STAMPING: D 34 1938
 JV2171_MARK LOGO: CGS
 JV2171_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2171
 JV2171  HISTORY     - Date     Condition        Report By
 JV2171  HISTORY     - 1938     MONUMENTED       CGS
 JV2171  HISTORY     - 1966     GOOD             CGS
 JV2171  HISTORY     - 1979     GOOD             NGS
 JV2171  HISTORY     - 1987     GOOD             USPSQD
 JV2171  HISTORY     - 1988     GOOD             USPSQD
 JV2171
 JV2171                          STATION DESCRIPTION
 JV2171
 JV2171'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 JV2171'AT ROCKVILLE.
 JV2171'AT RANDOLPH, MONTGOMERY COUNTY, ON THE BALTIMORE AND OHIO
 JV2171'RAILROAD, 600 FEET NORTHWEST OF THE STATION, AT A CONCRETE OVERPASS,
 JV2171'IN THE SOUTHWEST FACE OF THE SOUTHEAST PIER, 5 FEET NORTHEAST
 JV2171'OF THE CENTER LINE OF THE NORTH-BOUND TRACK, AND 5 FEET ABOVE THE
 JV2171'LEVEL OF THE RAILS.  A STANDARD DISK, STAMPED D 34 1938 AND SET
 JV2171'VERTICALLY.  RECOVERED AS DESCRIBED IN LIST 49 MD. EXCEPT THE
 JV2171'MARK IS 2.6 MILES SOUTH OF THE STATION IN ROCKVILLE AND 1/8TH MILE
 JV2171'NORTH OF THE RANDOLPH ROAD CROSSING.  THE RANDOLPH STATION IS
 JV2171'NO LONGER EXISTANT.
 JV2171
 JV2171                          STATION RECOVERY (1979)
 JV2171
 JV2171'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2171'RECOVERED IN GOOD CONDITION.
 JV2171
 JV2171                          STATION RECOVERY (1987)
 JV2171
 JV2171'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2171'RECOVERED IN GOOD CONDITION.
 JV2171
 JV2171                          STATION RECOVERY (1988)
 JV2171
 JV2171'RECOVERY NOTE BY US POWER SQUADRON 1988 (DTH)
 JV2171'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3177 ***********************************************************************
 JV3177  DESIGNATION -  D 35
 JV3177  PID         -  JV3177
 JV3177  STATE/COUNTY-  MD/FREDERICK
 JV3177  COUNTRY     -  US
 JV3177  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3177
 JV3177                         *CURRENT SURVEY CONTROL
 JV3177  ______________________________________________________________________
 JV3177* NAD 83(1986) POSITION- 39 15 35.     (N) 077 30 37.     (W)   SCALED
 JV3177* NAVD 88 ORTHO HEIGHT -    69.904 (meters)      229.34  (feet) ADJUSTED
 JV3177  ______________________________________________________________________
 JV3177  GEOID HEIGHT    -        -32.633 (meters)                     GEOID18
 JV3177  DYNAMIC HEIGHT  -         69.866 (meters)      229.22  (feet) COMP
 JV3177  MODELED GRAVITY -    980,081.9   (mgal)                       NAVD 88
 JV3177
 JV3177  VERT ORDER      -  FIRST     CLASS II
 JV3177
 JV3177.The horizontal coordinates were scaled from a map and have
 JV3177.an estimated accuracy of +/- 6 seconds.
 JV3177
 JV3177.The orthometric height was determined by differential leveling and
 JV3177.adjusted by the NATIONAL GEODETIC SURVEY
 JV3177.in June 1991.
 JV3177
 JV3177.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3177.GEOID18 height accuracy estimate available here.
 JV3177
 JV3177.Click photographs - Photos may exist for this station.
 JV3177
 JV3177.The dynamic height is computed by dividing the NAVD 88
 JV3177.geopotential number by the normal gravity value computed on the
 JV3177.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3177.degrees latitude (g = 980.6199 gals.).
 JV3177
 JV3177.The modeled gravity was interpolated from observed gravity values.
 JV3177
 JV3177;                    North         East    Units  Estimated Accuracy
 JV3177;SPC MD       -   176,960.      355,960.      MT  (+/- 180 meters Scaled)
 JV3177
 JV3177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ834486(NAD 83)
 JV3177
 JV3177                          SUPERSEDED SURVEY CONTROL
 JV3177
 JV3177  NGVD 29 (11/26/84)   70.125  (m)          230.07   (f) ADJUSTED    1 2
 JV3177
 JV3177.Superseded values are not recommended for survey control.
 JV3177
 JV3177.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3177.See file dsdata.pdf to determine how the superseded data were derived.
 JV3177
 JV3177_MARKER: DB = BENCH MARK DISK
 JV3177_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV3177+WITH SETTING: PAVEMENT
 JV3177_SP_SET: SIGNAL TOWER FOUNDATION
 JV3177_STAMPING: D 35 1938
 JV3177_MARK LOGO: CGS
 JV3177_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3177
 JV3177  HISTORY     - Date     Condition        Report By
 JV3177  HISTORY     - 1938     MONUMENTED       CGS
 JV3177
 JV3177                          STATION DESCRIPTION
 JV3177
 JV3177'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV3177'1.6 MI S FROM POINT OF ROCKS.
 JV3177'ON THE METROPOLITAN BRANCH OF THE B. AND O. R.R., 1.6 MILE SOUTH
 JV3177'OF POINT OF ROCKS STATION SET IN THE NORTHEAST CORNER OF CONCRETE
 JV3177'FOUNDATION OF SIGNAL TOWER E 41-15.  16 FT SOUTHWEST OF CENTER
 JV3177'LINE OF SOUTHBOUND TRACK.  6 IN BELOW THE LEVEL OF THE RAILS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3178 ***********************************************************************
 JV3178  DESIGNATION -  D 35 RESET
 JV3178  PID         -  JV3178
 JV3178  STATE/COUNTY-  MD/FREDERICK
 JV3178  COUNTRY     -  US
 JV3178  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3178
 JV3178                         *CURRENT SURVEY CONTROL
 JV3178  ______________________________________________________________________
 JV3178* NAD 83(1986) POSITION- 39 15 35.     (N) 077 30 37.     (W)   SCALED
 JV3178* NAVD 88 ORTHO HEIGHT -    72.119 (meters)      236.61  (feet) ADJUSTED
 JV3178  ______________________________________________________________________
 JV3178  GEOID HEIGHT    -        -32.633 (meters)                     GEOID18
 JV3178  DYNAMIC HEIGHT  -         72.080 (meters)      236.48  (feet) COMP
 JV3178  MODELED GRAVITY -    980,081.9   (mgal)                       NAVD 88
 JV3178
 JV3178  VERT ORDER      -  FIRST     CLASS II
 JV3178
 JV3178.The horizontal coordinates were scaled from a map and have
 JV3178.an estimated accuracy of +/- 6 seconds.
 JV3178
 JV3178.The orthometric height was determined by differential leveling and
 JV3178.adjusted by the NATIONAL GEODETIC SURVEY
 JV3178.in June 1991.
 JV3178
 JV3178.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3178.GEOID18 height accuracy estimate available here.
 JV3178
 JV3178.Click photographs - Photos may exist for this station.
 JV3178
 JV3178.The dynamic height is computed by dividing the NAVD 88
 JV3178.geopotential number by the normal gravity value computed on the
 JV3178.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3178.degrees latitude (g = 980.6199 gals.).
 JV3178
 JV3178.The modeled gravity was interpolated from observed gravity values.
 JV3178
 JV3178;                    North         East    Units  Estimated Accuracy
 JV3178;SPC MD       -   176,960.      355,960.      MT  (+/- 180 meters Scaled)
 JV3178
 JV3178_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ834486(NAD 83)
 JV3178
 JV3178                          SUPERSEDED SURVEY CONTROL
 JV3178
 JV3178  NGVD 29 (11/26/84)   72.340  (m)          237.34   (f) ADJUSTED    1 2
 JV3178
 JV3178.Superseded values are not recommended for survey control.
 JV3178
 JV3178.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3178.See file dsdata.pdf to determine how the superseded data were derived.
 JV3178
 JV3178_MARKER: DB = BENCH MARK DISK
 JV3178_SETTING: 80 = SET IN A BOULDER
 JV3178_STAMPING: D 35 RESET 1942
 JV3178_MARK LOGO: CGS
 JV3178_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3178+STABILITY: SURFACE MOTION
 JV3178
 JV3178  HISTORY     - Date     Condition        Report By
 JV3178  HISTORY     - 1942     MONUMENTED       CGS
 JV3178  HISTORY     - 1970     MARK NOT FOUND   USGS
 JV3178
 JV3178                          STATION DESCRIPTION
 JV3178
 JV3178'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3178'1.3 MI SE FROM POINT OF ROCKS.
 JV3178'1.3 MILES SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV3178'THE STATION AT POINT OF ROCKS, FREDERICK COUNTY, 185 FEET
 JV3178'SOUTHEAST OF POLE 41+40, 61 FEET NORTH OF THE CENTER LINE OF THE
 JV3178'WEST-BOUND TRACK, IN THE TOP OF A LARGE BOULDER, AND ABOUT 2 FEET
 JV3178'ABOVE THE TRACK.  A STANDARD DISK, STAMPED D 35 RESET 1942.
 JV3178
 JV3178                          STATION RECOVERY (1970)
 JV3178
 JV3178'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1970
 JV3178'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1399 ***********************************************************************
 JV1399  DESIGNATION -  D 36
 JV1399  PID         -  JV1399
 JV1399  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1399  COUNTRY     -  US
 JV1399  USGS QUAD   -  ROUND BAY (2016)
 JV1399
 JV1399                         *CURRENT SURVEY CONTROL
 JV1399  ______________________________________________________________________
 JV1399* NAD 83(1986) POSITION- 39 03 12.     (N) 076 37 09.     (W)   SCALED
 JV1399* NAVD 88 ORTHO HEIGHT -    29.645 (meters)       97.26  (feet) ADJUSTED
 JV1399  ______________________________________________________________________
 JV1399  GEOID HEIGHT    -        -32.924 (meters)                     GEOID18
 JV1399  DYNAMIC HEIGHT  -         29.629 (meters)       97.21  (feet) COMP
 JV1399  MODELED GRAVITY -    980,078.3   (mgal)                       NAVD 88
 JV1399
 JV1399  VERT ORDER      -  FIRST     CLASS II
 JV1399
 JV1399.The horizontal coordinates were scaled from a map and have
 JV1399.an estimated accuracy of +/- 6 seconds.
 JV1399
 JV1399.The orthometric height was determined by differential leveling and
 JV1399.adjusted by the NATIONAL GEODETIC SURVEY
 JV1399.in June 1991.
 JV1399
 JV1399.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1399.GEOID18 height accuracy estimate available here.
 JV1399
 JV1399.Click photographs - Photos may exist for this station.
 JV1399
 JV1399.The dynamic height is computed by dividing the NAVD 88
 JV1399.geopotential number by the normal gravity value computed on the
 JV1399.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1399.degrees latitude (g = 980.6199 gals.).
 JV1399
 JV1399.The modeled gravity was interpolated from observed gravity values.
 JV1399
 JV1399;                    North         East    Units  Estimated Accuracy
 JV1399;SPC MD       -   154,000.      432,960.      MT  (+/- 180 meters Scaled)
 JV1399
 JV1399_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ598239(NAD 83)
 JV1399
 JV1399                          SUPERSEDED SURVEY CONTROL
 JV1399
 JV1399  NGVD 29 (11/26/84)   29.883  (m)           98.04   (f) ADJUSTED    1 2
 JV1399
 JV1399.Superseded values are not recommended for survey control.
 JV1399
 JV1399.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1399.See file dsdata.pdf to determine how the superseded data were derived.
 JV1399
 JV1399_MARKER: DB = BENCH MARK DISK
 JV1399_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1399_SP_SET: CULVERT
 JV1399_STAMPING: D 36 1938
 JV1399_MARK LOGO: CGS
 JV1399_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1399
 JV1399  HISTORY     - Date     Condition        Report By
 JV1399  HISTORY     - 1938     MONUMENTED       CGS
 JV1399
 JV1399                          STATION DESCRIPTION
 JV1399
 JV1399'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV1399'1.4 MI W FROM GOTT.
 JV1399'1.4 MILES WEST ALONG STATE HIGHWAY 178 FROM GOTT, ANNE ARUNDEL
 JV1399'COUNTY, 140 FEET WEST OF THE JUNCTION OF A ROAD LEADING NORTH TO
 JV1399'WHITNEYS LANDING, 40 FEET NORTH OF AND ACROSS THE HIGHWAY FROM
 JV1399'A ROW OF GUARD POSTS, 20 FEET NORTH OF THE CENTER LINE OF THE
 JV1399'HIGHWAY, IN THE TOP OF A CULVERT, AND ABOUT 18 INCHES LOWER THAN
 JV1399'THE HIGHWAY.  A STANDARD DISK, STAMPED D 36 1938.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0317 ***********************************************************************
 HV0317  DESIGNATION -  D 38
 HV0317  PID         -  HV0317
 HV0317  STATE/COUNTY-  MD/ST MARYS
 HV0317  COUNTRY     -  US
 HV0317  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0317
 HV0317                         *CURRENT SURVEY CONTROL
 HV0317  ______________________________________________________________________
 HV0317* NAD 83(1986) POSITION- 38 15 27.     (N) 076 28 25.     (W)   SCALED
 HV0317* NAVD 88 ORTHO HEIGHT -    21.545 (meters)       70.69  (feet) ADJUSTED
 HV0317  ______________________________________________________________________
 HV0317  GEOID HEIGHT    -        -34.462 (meters)                     GEOID18
 HV0317  DYNAMIC HEIGHT  -         21.531 (meters)       70.64  (feet) COMP
 HV0317  MODELED GRAVITY -    980,009.0   (mgal)                       NAVD 88
 HV0317
 HV0317  VERT ORDER      -  FIRST     CLASS II
 HV0317
 HV0317.The horizontal coordinates were scaled from a map and have
 HV0317.an estimated accuracy of +/- 6 seconds.
 HV0317
 HV0317.The orthometric height was determined by differential leveling and
 HV0317.adjusted by the NATIONAL GEODETIC SURVEY
 HV0317.in June 1991.
 HV0317
 HV0317.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0317.GEOID18 height accuracy estimate available here.
 HV0317
 HV0317.Click photographs - Photos may exist for this station.
 HV0317
 HV0317.The dynamic height is computed by dividing the NAVD 88
 HV0317.geopotential number by the normal gravity value computed on the
 HV0317.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0317.degrees latitude (g = 980.6199 gals.).
 HV0317
 HV0317.The modeled gravity was interpolated from observed gravity values.
 HV0317
 HV0317;                    North         East    Units  Estimated Accuracy
 HV0317;SPC MD       -    65,720.      446,070.      MT  (+/- 180 meters Scaled)
 HV0317
 HV0317_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH710354(NAD 83)
 HV0317
 HV0317                          SUPERSEDED SURVEY CONTROL
 HV0317
 HV0317  NGVD 29 (11/26/84)   21.837  (m)           71.64   (f) ADJUSTED    1 2
 HV0317
 HV0317.Superseded values are not recommended for survey control.
 HV0317
 HV0317.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0317.See file dsdata.pdf to determine how the superseded data were derived.
 HV0317
 HV0317_MARKER: DB = BENCH MARK DISK
 HV0317_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0317_STAMPING: D 38 1941
 HV0317_MARK LOGO: CGS
 HV0317_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0317+STABILITY: SURFACE MOTION
 HV0317
 HV0317  HISTORY     - Date     Condition        Report By
 HV0317  HISTORY     - 1941     MONUMENTED       CGS
 HV0317  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0317  HISTORY     - 1982     MARK NOT FOUND   USGS
 HV0317
 HV0317                          STATION DESCRIPTION
 HV0317
 HV0317'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0317'2.2 MI NE FROM GREAT MILLS.
 HV0317'ABOUT 2.2 MILES NORTHEAST ALONG THE COUNTY ROAD LEADING TO
 HV0317'JARBOESVILLE FROM THE POST OFFICE AT GREAT MILLS, ST. MARYS
 HV0317'COUNTY, ABOUT 150 FEET EAST OF THE EAST CORNER OF A LARGE 2-STORY
 HV0317'FARMHOUSE, 90 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A DOUBLE
 HV0317'GARAGE, 31.2 FEET NORTH OF THE CENTER LINE OF THE ROAD, 29 FEET
 HV0317'EAST OF THE CENTER LINE OF A PRIVATE DRIVEWAY, 11.7 FEET NORTH
 HV0317'OF POWER-TRANSMISSION LINE POLE 12-B-63, AND 2.2 FEET SOUTHEAST
 HV0317'OF A WHITE WOODEN POST STENCILED U.S.B.M.  A STANDARD DISK,
 HV0317'STAMPED D 38 1941 AND SET IN THE TOP OF A CONCRETE POST.
 HV0317
 HV0317                          STATION RECOVERY (1982)
 HV0317
 HV0317'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1982
 HV0317'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1386 ***********************************************************************
 JV1386  DESIGNATION -  D 39
 JV1386  PID         -  JV1386
 JV1386  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1386  COUNTRY     -  US
 JV1386  USGS QUAD   -  ODENTON (2016)
 JV1386
 JV1386                         *CURRENT SURVEY CONTROL
 JV1386  ______________________________________________________________________
 JV1386* NAD 83(1986) POSITION- 39 02 49.0    (N) 076 44 19.6    (W)   HD_HELD2
 JV1386* NAVD 88 ORTHO HEIGHT -    35.001 (meters)      114.83  (feet) ADJUSTED
 JV1386  ______________________________________________________________________
 JV1386  GEOID HEIGHT    -        -32.606 (meters)                     GEOID18
 JV1386  DYNAMIC HEIGHT  -         34.982 (meters)      114.77  (feet) COMP
 JV1386  MODELED GRAVITY -    980,084.6   (mgal)                       NAVD 88
 JV1386
 JV1386  VERT ORDER      -  FIRST     CLASS II
 JV1386
 JV1386.The horizontal coordinates were established by autonomous hand held GPS
 JV1386.observations and have an estimated accuracy of +/- 10 meters.
 JV1386
 JV1386.The orthometric height was determined by differential leveling and
 JV1386.adjusted by the NATIONAL GEODETIC SURVEY
 JV1386.in June 1991.
 JV1386
 JV1386.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1386.GEOID18 height accuracy estimate available here.
 JV1386
 JV1386.Click photographs - Photos may exist for this station.
 JV1386
 JV1386.The dynamic height is computed by dividing the NAVD 88
 JV1386.geopotential number by the normal gravity value computed on the
 JV1386.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1386.degrees latitude (g = 980.6199 gals.).
 JV1386
 JV1386.The modeled gravity was interpolated from observed gravity values.
 JV1386
 JV1386;                    North         East    Units  Estimated Accuracy
 JV1386;SPC MD       -   153,250.      422,613.      MT  (+/- 10 meters HH2 GPS)
 JV1386
 JV1386_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4953023424(NAD 83)
 JV1386
 JV1386                          SUPERSEDED SURVEY CONTROL
 JV1386
 JV1386  NGVD 29 (11/26/84)   35.230  (m)          115.58   (f) ADJUSTED    1 2
 JV1386
 JV1386.Superseded values are not recommended for survey control.
 JV1386
 JV1386.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1386.See file dsdata.pdf to determine how the superseded data were derived.
 JV1386
 JV1386_MARKER: DB = BENCH MARK DISK
 JV1386_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1386+WITH SETTING: PAVEMENT
 JV1386_SP_SET: POLE BASE
 JV1386_STAMPING: D 39 1941
 JV1386_MARK LOGO: CGS
 JV1386_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1386+STABILITY: SURFACE MOTION
 JV1386
 JV1386  HISTORY     - Date     Condition        Report By
 JV1386  HISTORY     - 1941     MONUMENTED       CGS
 JV1386
 JV1386                          STATION DESCRIPTION
 JV1386
 JV1386'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1386'3.2 MI SW FROM ODENTON.
 JV1386'ABOUT 3.2 MILES SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1386'THE STATION AT ODENTON, ANNE ARUNDEL COUNTY, 51.2 FEET EAST OF
 JV1386'MILEPOST 117, AT POWER-TRANSMISSION LINE POLE 116-99, IN THE
 JV1386'TOP OF THE NORTHWEST CORNER OF THE BASE, AND 21.4 FEET EAST OF
 JV1386'THE EAST RAIL OF THE EAST TRACK.  A STANDARD DISK, STAMPED D 39
 JV1386'1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0961 ***********************************************************************
 HV0961  DESIGNATION -  D 40
 HV0961  PID         -  HV0961
 HV0961  STATE/COUNTY-  MD/CHARLES
 HV0961  COUNTRY     -  US
 HV0961  USGS QUAD   -  HUGHESVILLE (2016)
 HV0961
 HV0961                         *CURRENT SURVEY CONTROL
 HV0961  ______________________________________________________________________
 HV0961* NAD 83(1986) POSITION- 38 35 00.     (N) 076 51 43.     (W)   SCALED
 HV0961* NAVD 88 ORTHO HEIGHT -    57.043 (meters)      187.15  (feet) ADJUSTED
 HV0961  ______________________________________________________________________
 HV0961  GEOID HEIGHT    -        -33.178 (meters)                     GEOID18
 HV0961  DYNAMIC HEIGHT  -         57.008 (meters)      187.03  (feet) COMP
 HV0961  MODELED GRAVITY -    980,027.6   (mgal)                       NAVD 88
 HV0961
 HV0961  VERT ORDER      -  FIRST     CLASS II
 HV0961
 HV0961.The horizontal coordinates were scaled from a map and have
 HV0961.an estimated accuracy of +/- 6 seconds.
 HV0961
 HV0961.The orthometric height was determined by differential leveling and
 HV0961.adjusted by the NATIONAL GEODETIC SURVEY
 HV0961.in June 1991.
 HV0961
 HV0961.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0961.GEOID18 height accuracy estimate available here.
 HV0961
 HV0961.Click photographs - Photos may exist for this station.
 HV0961
 HV0961.The dynamic height is computed by dividing the NAVD 88
 HV0961.geopotential number by the normal gravity value computed on the
 HV0961.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0961.degrees latitude (g = 980.6199 gals.).
 HV0961
 HV0961.The modeled gravity was interpolated from observed gravity values.
 HV0961
 HV0961;                    North         East    Units  Estimated Accuracy
 HV0961;SPC MD       -   101,760.      412,030.      MT  (+/- 180 meters Scaled)
 HV0961
 HV0961_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH378721(NAD 83)
 HV0961
 HV0961                          SUPERSEDED SURVEY CONTROL
 HV0961
 HV0961  NGVD 29 (11/26/84)   57.292  (m)          187.97   (f) ADJUSTED    1 2
 HV0961
 HV0961.Superseded values are not recommended for survey control.
 HV0961
 HV0961.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0961.See file dsdata.pdf to determine how the superseded data were derived.
 HV0961
 HV0961_MARKER: DB = BENCH MARK DISK
 HV0961_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0961_SP_SET: CULVERT
 HV0961_STAMPING: D 40 1941
 HV0961_MARK LOGO: CGS
 HV0961_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0961
 HV0961  HISTORY     - Date     Condition        Report By
 HV0961  HISTORY     - 1941     MONUMENTED       CGS
 HV0961
 HV0961                          STATION DESCRIPTION
 HV0961
 HV0961'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0961'4 MI SE FROM WALDORF.
 HV0961'4.0 MILES SOUTH-EAST ALONG STATE HIGHWAY NO. 5 FROM THE STATION
 HV0961'AT WALDORF, AT A T ROAD LEADING WEST, SET IN THE WEST CORNER OF
 HV0961'THE SOUTH HEAD-WALL OF A 12-INCH CONCRETE CULVERT UNDER SIDE
 HV0961'ROAD, 10 FEET SOUTH OF CENTER-LINE OF SIDE ROAD, 29 FEET WEST
 HV0961'OF CENTER-LINE OF HIGHWAY, 33 FEET NORTH OF POWER-LINE POLE NO.
 HV0961'318.  A STANDARD DISK STAMPED D-40 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0962 ***********************************************************************
 HV0962  DESIGNATION -  D 40 RESET
 HV0962  PID         -  HV0962
 HV0962  STATE/COUNTY-  MD/CHARLES
 HV0962  COUNTRY     -  US
 HV0962  USGS QUAD   -  HUGHESVILLE (2016)
 HV0962
 HV0962                         *CURRENT SURVEY CONTROL
 HV0962  ______________________________________________________________________
 HV0962* NAD 83(1986) POSITION- 38 35 00.     (N) 076 51 43.     (W)   SCALED
 HV0962* NAVD 88 ORTHO HEIGHT -    57.822 (meters)      189.70  (feet) ADJUSTED
 HV0962  ______________________________________________________________________
 HV0962  GEOID HEIGHT    -        -33.178 (meters)                     GEOID18
 HV0962  DYNAMIC HEIGHT  -         57.787 (meters)      189.59  (feet) COMP
 HV0962  MODELED GRAVITY -    980,027.6   (mgal)                       NAVD 88
 HV0962
 HV0962  VERT ORDER      -  SECOND    CLASS 0
 HV0962
 HV0962.The horizontal coordinates were scaled from a map and have
 HV0962.an estimated accuracy of +/- 6 seconds.
 HV0962
 HV0962.The orthometric height was determined by differential leveling and
 HV0962.adjusted by the NATIONAL GEODETIC SURVEY
 HV0962.in June 1991.
 HV0962
 HV0962.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0962.GEOID18 height accuracy estimate available here.
 HV0962
 HV0962.Click photographs - Photos may exist for this station.
 HV0962
 HV0962.The dynamic height is computed by dividing the NAVD 88
 HV0962.geopotential number by the normal gravity value computed on the
 HV0962.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0962.degrees latitude (g = 980.6199 gals.).
 HV0962
 HV0962.The modeled gravity was interpolated from observed gravity values.
 HV0962
 HV0962;                    North         East    Units  Estimated Accuracy
 HV0962;SPC MD       -   101,760.      412,030.      MT  (+/- 180 meters Scaled)
 HV0962
 HV0962_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH378721(NAD 83)
 HV0962
 HV0962                          SUPERSEDED SURVEY CONTROL
 HV0962
 HV0962  NGVD 29 (11/26/84)   58.056  (m)          190.47   (f) ADJUSTED    2 0
 HV0962
 HV0962.Superseded values are not recommended for survey control.
 HV0962
 HV0962.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0962.See file dsdata.pdf to determine how the superseded data were derived.
 HV0962
 HV0962_MARKER: DB = BENCH MARK DISK
 HV0962_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0962_STAMPING: D 40 1941 RESET 1964
 HV0962_MARK LOGO: CGS
 HV0962_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0962+STABILITY: SURFACE MOTION
 HV0962
 HV0962  HISTORY     - Date     Condition        Report By
 HV0962  HISTORY     - 1964     MONUMENTED       MDSRC
 HV0962  HISTORY     - 1967     GOOD             CGS
 HV0962  HISTORY     - 1967     GOOD             CGS
 HV0962
 HV0962                          STATION DESCRIPTION
 HV0962
 HV0962'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 HV0962'4 MI SE FROM WALDORF.
 HV0962'ABOUT 4.0 MILES SOUTHEAST OF PENNSYLVANIA RAILROAD IN WALDORF A
 HV0962'ALONG MD. 5 ON THE RIGHT AT A FARM ENTRANCE, 38.0 FEET SOUTH OF
 HV0962'THE CENTERLINE OF THE FARM ENTRANCE, 39 FEET WEST OF  THE
 HV0962'CENTERLINE OF MARYLAND 5 SOUTH BOUND LANE, AND 1.3 FEET SOUTH OF
 HV0962'POLE NO. 318 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 4
 HV0962'INCHES.
 HV0962
 HV0962                          STATION RECOVERY (1967)
 HV0962
 HV0962'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 HV0962'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0690 ***********************************************************************
 HV0690  DESIGNATION -  D 41
 HV0690  PID         -  HV0690
 HV0690  STATE/COUNTY-  MD/ST MARYS
 HV0690  COUNTRY     -  US
 HV0690  USGS QUAD   -  LEONARDTOWN (2016)
 HV0690
 HV0690                         *CURRENT SURVEY CONTROL
 HV0690  ______________________________________________________________________
 HV0690* NAD 83(1986) POSITION- 38 19 29.     (N) 076 40 34.     (W)   SCALED
 HV0690* NAVD 88 ORTHO HEIGHT -    35.449 (meters)      116.30  (feet) POSTED
 HV0690  ______________________________________________________________________
 HV0690  GEOID HEIGHT    -        -33.790 (meters)                     GEOID18
 HV0690  DYNAMIC HEIGHT  -         35.43  (meters)      116.2   (feet) COMP
 HV0690  MODELED GRAVITY -    980,034.0   (mgal)                       NAVD 88
 HV0690
 HV0690  VERT ORDER      -  * POSTED, SEE BELOW
 HV0690
 HV0690.The horizontal coordinates were scaled from a map and have
 HV0690.an estimated accuracy of +/- 6 seconds.
 HV0690
 HV0690.The orthometric height was determined by differential leveling
 HV0690.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0690
 HV0690.* This is a POSTED BENCH MARK height.
 HV0690
 HV0690.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0690.GEOID18 height accuracy estimate available here.
 HV0690
 HV0690.Click photographs - Photos may exist for this station.
 HV0690
 HV0690.The dynamic height is computed by dividing the NAVD 88
 HV0690.geopotential number by the normal gravity value computed on the
 HV0690.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0690.degrees latitude (g = 980.6199 gals.).
 HV0690
 HV0690.The modeled gravity was interpolated from observed gravity values.
 HV0690
 HV0690;                    North         East    Units  Estimated Accuracy
 HV0690;SPC MD       -    73,100.      428,320.      MT  (+/- 180 meters Scaled)
 HV0690
 HV0690_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH534431(NAD 83)
 HV0690
 HV0690                          SUPERSEDED SURVEY CONTROL
 HV0690
 HV0690  NGVD 29 (11/26/84)   35.746  (m)          117.28   (f) ADJUSTED    1 2
 HV0690
 HV0690.Superseded values are not recommended for survey control.
 HV0690
 HV0690.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0690.See file dsdata.pdf to determine how the superseded data were derived.
 HV0690
 HV0690_MARKER: DB = BENCH MARK DISK
 HV0690_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0690_SP_SET: CULVERT
 HV0690_STAMPING: D 41 1941
 HV0690_MARK LOGO: CGS
 HV0690_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0690
 HV0690  HISTORY     - Date     Condition        Report By
 HV0690  HISTORY     - 1941     MONUMENTED       CGS
 HV0690
 HV0690                          STATION DESCRIPTION
 HV0690
 HV0690'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0690'3.7 MI NW FROM LEONARDTOWN.
 HV0690'3.7 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST OFFICE
 HV0690'AT LEONARDTOWN, AT THE JUNCTION OF THE OLD AND THE NEW HIGHWAYS,
 HV0690'SET IN THE SOUTH CORNER OF THE WEST HEAD-WALL OF A 12-INCH
 HV0690'CONCRETE CULVERT UNDER THE NEW HIGHWAY 10 FEET NORTHEAST OF THE
 HV0690'1ST. TELEPHONE POLE WEST OF THE NEW HIGHWAY AND SOUTH OF THE OLD
 HV0690'HIGHWAY, 47 FEET SOUTHWEST OF POWER-LINE POLE NO. 879, 21 FEET
 HV0690'SOUTHEAST OF CENTER-LINE OF THE OLD HIGHWAY, 16.5 FEET WEST OF
 HV0690'CENTER-LINE OF THE NEW HIGHWAY.  A STANDARD DISK STAMPED D-41 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0691 ***********************************************************************
 HV0691  DESIGNATION -  D 41 RESET
 HV0691  PID         -  HV0691
 HV0691  STATE/COUNTY-  MD/ST MARYS
 HV0691  COUNTRY     -  US
 HV0691  USGS QUAD   -  LEONARDTOWN (2016)
 HV0691
 HV0691                         *CURRENT SURVEY CONTROL
 HV0691  ______________________________________________________________________
 HV0691* NAD 83(1986) POSITION- 38 19 29.     (N) 076 40 35.     (W)   SCALED
 HV0691* NAVD 88 ORTHO HEIGHT -    35.644 (meters)      116.94  (feet) ADJUSTED
 HV0691  ______________________________________________________________________
 HV0691  GEOID HEIGHT    -        -33.790 (meters)                     GEOID18
 HV0691  DYNAMIC HEIGHT  -         35.622 (meters)      116.87  (feet) COMP
 HV0691  MODELED GRAVITY -    980,033.9   (mgal)                       NAVD 88
 HV0691
 HV0691  VERT ORDER      -  FIRST     CLASS II
 HV0691
 HV0691.The horizontal coordinates were scaled from a map and have
 HV0691.an estimated accuracy of +/- 6 seconds.
 HV0691
 HV0691.The orthometric height was determined by differential leveling and
 HV0691.adjusted by the NATIONAL GEODETIC SURVEY
 HV0691.in June 1991.
 HV0691
 HV0691.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0691.GEOID18 height accuracy estimate available here.
 HV0691
 HV0691.Click photographs - Photos may exist for this station.
 HV0691
 HV0691.The dynamic height is computed by dividing the NAVD 88
 HV0691.geopotential number by the normal gravity value computed on the
 HV0691.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0691.degrees latitude (g = 980.6199 gals.).
 HV0691
 HV0691.The modeled gravity was interpolated from observed gravity values.
 HV0691
 HV0691;                    North         East    Units  Estimated Accuracy
 HV0691;SPC MD       -    73,100.      428,300.      MT  (+/- 180 meters Scaled)
 HV0691
 HV0691_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH534431(NAD 83)
 HV0691
 HV0691                          SUPERSEDED SURVEY CONTROL
 HV0691
 HV0691  NGVD 29 (11/26/84)   35.884  (m)          117.73   (f) ADJUSTED    1 2
 HV0691
 HV0691.Superseded values are not recommended for survey control.
 HV0691
 HV0691.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0691.See file dsdata.pdf to determine how the superseded data were derived.
 HV0691
 HV0691_MARKER: DB = BENCH MARK DISK
 HV0691_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0691_STAMPING: D 41 RESET 1967
 HV0691_MARK LOGO: CGS
 HV0691_PROJECTION: FLUSH
 HV0691_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0691+STABILITY: SURFACE MOTION
 HV0691
 HV0691  HISTORY     - Date     Condition        Report By
 HV0691  HISTORY     - 1967     MONUMENTED       MDDT
 HV0691  HISTORY     - 1971     GOOD             NGS
 HV0691
 HV0691                          STATION DESCRIPTION
 HV0691
 HV0691'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0691'3.7 MI NW FROM LEONARDTOWN.
 HV0691'ABOUT 3.7 MILES NORTHWEST ALONG WASHINGTON STREET AND STATE
 HV0691'HIGHWAY 5 FROM THE COURTHOUSE AT LEONARDTOWN, 202.8 FEET WEST OF
 HV0691'THE CENTER LINE OF STATE HIGHWAY 5, NEAR A FORK IN A DIRT ROAD,
 HV0691'27 1/2 FEET NORTHWEST OF THE CENTER LINE OF THE SOUTH ROAD IN THE
 HV0691'FORK, 0.35 MILE SOUTH OF THE CENTER OF THE BANNEKER SCHOOL, 5.4
 HV0691'FEET SOUTH OF A 24-INCH DOUBLE BODIED TREE, 0.5 FOOT NORTHEAST
 HV0691'OF A STEEL WITNESS POST, ABOUT LEVEL WITH THE CENTER LINE OF THE
 HV0691'DIRT ROAD AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 HV0691'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3217 ***********************************************************************
 JV3217  DESIGNATION -  D 42
 JV3217  PID         -  JV3217
 JV3217  STATE/COUNTY-  MD/WASHINGTON
 JV3217  COUNTRY     -  US
 JV3217  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3217
 JV3217                         *CURRENT SURVEY CONTROL
 JV3217  ______________________________________________________________________
 JV3217* NAD 83(1986) POSITION- 39 36 44.     (N) 077 50 27.     (W)   SCALED
 JV3217* NAVD 88 ORTHO HEIGHT -   117.444 (meters)      385.31  (feet) ADJUSTED
 JV3217  ______________________________________________________________________
 JV3217  GEOID HEIGHT    -        -34.281 (meters)                     GEOID18
 JV3217  DYNAMIC HEIGHT  -        117.375 (meters)      385.09  (feet) COMP
 JV3217  MODELED GRAVITY -    980,037.3   (mgal)                       NAVD 88
 JV3217
 JV3217  VERT ORDER      -  FIRST     CLASS II
 JV3217
 JV3217.The horizontal coordinates were scaled from a map and have
 JV3217.an estimated accuracy of +/- 6 seconds.
 JV3217
 JV3217.The orthometric height was determined by differential leveling and
 JV3217.adjusted by the NATIONAL GEODETIC SURVEY
 JV3217.in June 1991.
 JV3217
 JV3217.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3217.GEOID18 height accuracy estimate available here.
 JV3217
 JV3217.Click photographs - Photos may exist for this station.
 JV3217
 JV3217.The dynamic height is computed by dividing the NAVD 88
 JV3217.geopotential number by the normal gravity value computed on the
 JV3217.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3217.degrees latitude (g = 980.6199 gals.).
 JV3217
 JV3217.The modeled gravity was interpolated from observed gravity values.
 JV3217
 JV3217;                    North         East    Units  Estimated Accuracy
 JV3217;SPC MD       -   216,310.      327,790.      MT  (+/- 180 meters Scaled)
 JV3217
 JV3217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ561885(NAD 83)
 JV3217
 JV3217                          SUPERSEDED SURVEY CONTROL
 JV3217
 JV3217  NGVD 29 (11/26/84)  117.654  (m)          386.00   (f) ADJUSTED    1 2
 JV3217
 JV3217.Superseded values are not recommended for survey control.
 JV3217
 JV3217.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3217.See file dsdata.pdf to determine how the superseded data were derived.
 JV3217
 JV3217_MARKER: DB = BENCH MARK DISK
 JV3217_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3217_SP_SET: SIGNAL TOWER
 JV3217_STAMPING: D 42 1941
 JV3217_MARK LOGO: CGS
 JV3217_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3217
 JV3217  HISTORY     - Date     Condition        Report By
 JV3217  HISTORY     - 1941     MONUMENTED       CGS
 JV3217  HISTORY     - 1967     MARK NOT FOUND   LOCSUR
 JV3217
 JV3217                          STATION DESCRIPTION
 JV3217
 JV3217'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV3217'7 MI SW FROM HAGERSTOWN.
 JV3217'7.0 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JV3217'STATION AT HAGERSTOWN, 42 RAILS EAST OF MILE-POST 94, 52 FEET
 JV3217'SOUTH OF SIGNAL TOWER NO. A 938, 21.5 FEET SOUTH OF THE SOUTH
 JV3217'RAIL OF THE WEST-BOUND TRACK, SET IN THE NORTHEAST CORNER OF
 JV3217'CONCRETE BASE OF SIGNAL TOWER.
 JV3217
 JV3217                          STATION RECOVERY (1967)
 JV3217
 JV3217'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1967
 JV3217'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0022 ***********************************************************************
 JW0022  DESIGNATION -  D 43
 JW0022  PID         -  JW0022
 JW0022  STATE/COUNTY-  MD/WASHINGTON
 JW0022  COUNTRY     -  US
 JW0022  USGS QUAD   -  HANCOCK (2016)
 JW0022
 JW0022                         *CURRENT SURVEY CONTROL
 JW0022  ______________________________________________________________________
 JW0022* NAD 83(1986) POSITION- 39 39 48.     (N) 078 13 55.     (W)   SCALED
 JW0022* NAVD 88 ORTHO HEIGHT -   147.501 (meters)      483.93  (feet) ADJUSTED
 JW0022  ______________________________________________________________________
 JW0022  GEOID HEIGHT    -        -33.941 (meters)                     GEOID18
 JW0022  DYNAMIC HEIGHT  -        147.415 (meters)      483.64  (feet) COMP
 JW0022  MODELED GRAVITY -    980,040.5   (mgal)                       NAVD 88
 JW0022
 JW0022  VERT ORDER      -  FIRST     CLASS II
 JW0022
 JW0022.The horizontal coordinates were scaled from a map and have
 JW0022.an estimated accuracy of +/- 6 seconds.
 JW0022
 JW0022.The orthometric height was determined by differential leveling and
 JW0022.adjusted by the NATIONAL GEODETIC SURVEY
 JW0022.in June 1991.
 JW0022
 JW0022.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0022.GEOID18 height accuracy estimate available here.
 JW0022
 JW0022.Click photographs - Photos may exist for this station.
 JW0022
 JW0022.The dynamic height is computed by dividing the NAVD 88
 JW0022.geopotential number by the normal gravity value computed on the
 JW0022.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0022.degrees latitude (g = 980.6199 gals.).
 JW0022
 JW0022.The modeled gravity was interpolated from observed gravity values.
 JW0022
 JW0022;                    North         East    Units  Estimated Accuracy
 JW0022;SPC MD       -   222,360.      294,280.      MT  (+/- 180 meters Scaled)
 JW0022
 JW0022_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD374940(NAD 83)
 JW0022
 JW0022                          SUPERSEDED SURVEY CONTROL
 JW0022
 JW0022  NGVD 29 (??/??/92)  147.704  (m)          484.59   (f) ADJ UNCH    1 2
 JW0022
 JW0022.Superseded values are not recommended for survey control.
 JW0022
 JW0022.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0022.See file dsdata.pdf to determine how the superseded data were derived.
 JW0022
 JW0022_MARKER: DB = BENCH MARK DISK
 JW0022_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JW0022_STAMPING: D 43 1941
 JW0022_MARK LOGO: CGS
 JW0022_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0022
 JW0022  HISTORY     - Date     Condition        Report By
 JW0022  HISTORY     - 1941     MONUMENTED       CGS
 JW0022
 JW0022                          STATION DESCRIPTION
 JW0022
 JW0022'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0022'4.5 MI SW FROM HANCOCK.
 JW0022'4.5 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0022'STATION AT HANCOCK, AT A ROAD CROSSING, 61.4 FEET SOUTHEAST OF
 JW0022'MILE-POST NO. 120, 44 FEET EAST OF THE EAST RAIL OF THE MAIN
 JW0022'TRACK, 36 FEET NORTHWEST OF THE CENTER-LINE OF THE ROAD, 6.6 FEET
 JW0022'SOUTH OF A TELEGRAPH POLE, ABOUT 1 FOOT ABOVE THE TRACK LEVEL, 1
 JW0022'FOOT WEST OF A WHITE MARKER POST STENCILED U.S.B.M.  A STANDARD
 JW0022'DISK STAMPED D-43 1941 AND SET IN THE TOP OF A PRE-CAST CONCRETE
 JW0022'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0726 ***********************************************************************
 JV0726  DESIGNATION -  D 44
 JV0726  PID         -  JV0726
 JV0726  STATE/COUNTY-  MD/HOWARD
 JV0726  COUNTRY     -  US
 JV0726  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0726
 JV0726                         *CURRENT SURVEY CONTROL
 JV0726  ______________________________________________________________________
 JV0726* NAD 83(1986) POSITION- 39 16 04.     (N) 076 47 39.     (W)   SCALED
 JV0726* NAVD 88 ORTHO HEIGHT -    42.884 (meters)      140.70  (feet) ADJUSTED
 JV0726  ______________________________________________________________________
 JV0726  GEOID HEIGHT    -        -32.243 (meters)                     GEOID18
 JV0726  DYNAMIC HEIGHT  -         42.861 (meters)      140.62  (feet) COMP
 JV0726  MODELED GRAVITY -    980,100.0   (mgal)                       NAVD 88
 JV0726
 JV0726  VERT ORDER      -  FIRST     CLASS II
 JV0726
 JV0726.The horizontal coordinates were scaled from a map and have
 JV0726.an estimated accuracy of +/- 6 seconds.
 JV0726
 JV0726.The orthometric height was determined by differential leveling and
 JV0726.adjusted by the NATIONAL GEODETIC SURVEY
 JV0726.in June 1991.
 JV0726
 JV0726.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0726.GEOID18 height accuracy estimate available here.
 JV0726
 JV0726.Click photographs - Photos may exist for this station.
 JV0726
 JV0726.The dynamic height is computed by dividing the NAVD 88
 JV0726.geopotential number by the normal gravity value computed on the
 JV0726.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0726.degrees latitude (g = 980.6199 gals.).
 JV0726
 JV0726.The modeled gravity was interpolated from observed gravity values.
 JV0726
 JV0726;                    North         East    Units  Estimated Accuracy
 JV0726;SPC MD       -   177,750.      417,760.      MT  (+/- 180 meters Scaled)
 JV0726
 JV0726_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ452480(NAD 83)
 JV0726
 JV0726                          SUPERSEDED SURVEY CONTROL
 JV0726
 JV0726  NGVD 29 (11/26/84)   43.104  (m)          141.42   (f) ADJUSTED    1 2
 JV0726
 JV0726.Superseded values are not recommended for survey control.
 JV0726
 JV0726.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0726.See file dsdata.pdf to determine how the superseded data were derived.
 JV0726
 JV0726_MARKER: DB = BENCH MARK DISK
 JV0726_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0726_SP_SET: BRIDGE ISLAND
 JV0726_STAMPING: D 44 1941
 JV0726_MARK LOGO: CGS
 JV0726_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0726_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0726
 JV0726  HISTORY     - Date     Condition        Report By
 JV0726  HISTORY     - 1941     MONUMENTED       CGS
 JV0726  HISTORY     - 1942     GOOD             CGS
 JV0726  HISTORY     - 19960201 GOOD             MCCRON
 JV0726  HISTORY     - 19980501 MARK NOT FOUND   MDSHA
 JV0726  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV0726
 JV0726                          STATION DESCRIPTION
 JV0726
 JV0726'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0726'AT ELLICOTT CITY.
 JV0726'AT ELLICOTT CITY, HOWARD COUNTY, 61 FEET NORTHWEST OF THE
 JV0726'NORTHWEST CORNER OF THE BALTIMORE AND OHIO RAILROAD STATION,
 JV0726'ABOUT 198 FEET NORTH-NORTHWEST OF MILEPOST 15, AT A BRIDGE OVER A
 JV0726'HIGHWAY AND STREETCAR TRACK, AND IN THE TOP OF THE EAST END OF A
 JV0726'CONCRETE ISLAND BETWEEN THE RAILROAD TRACKS.  A STANDARD DISK,
 JV0726'STAMPED D 44 1941.
 JV0726
 JV0726                          STATION RECOVERY (1942)
 JV0726
 JV0726'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV0726'RECOVERED IN GOOD CONDITION.
 JV0726
 JV0726                          STATION RECOVERY (1996)
 JV0726
 JV0726'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 JV0726'RECOVERED AS DESCRIBED.
 JV0726
 JV0726                          STATION RECOVERY (1998)
 JV0726
 JV0726'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV0726'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
 JV0726
 JV0726                          STATION RECOVERY (2003)
 JV0726
 JV0726'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0726'NOT FOUND.  THERE IS NOW ONE SET OF TRACKS WHICH HAVE BEEN ELEVATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0756 ***********************************************************************
 JV0756  DESIGNATION -  D 45
 JV0756  PID         -  JV0756
 JV0756  STATE/COUNTY-  MD/CARROLL
 JV0756  COUNTRY     -  US
 JV0756  USGS QUAD   -  FINKSBURG (2016)
 JV0756
 JV0756                         *CURRENT SURVEY CONTROL
 JV0756  ______________________________________________________________________
 JV0756* NAD 83(1986) POSITION- 39 24 57.     (N) 076 56 44.     (W)   SCALED
 JV0756* NAVD 88 ORTHO HEIGHT -   195.455 (meters)      641.26  (feet) ADJUSTED
 JV0756  ______________________________________________________________________
 JV0756  GEOID HEIGHT    -        -31.978 (meters)                     GEOID18
 JV0756  DYNAMIC HEIGHT  -        195.353 (meters)      640.92  (feet) COMP
 JV0756  MODELED GRAVITY -    980,101.8   (mgal)                       NAVD 88
 JV0756
 JV0756  VERT ORDER      -  SECOND    CLASS 0
 JV0756
 JV0756.The horizontal coordinates were scaled from a map and have
 JV0756.an estimated accuracy of +/- 6 seconds.
 JV0756
 JV0756.The orthometric height was determined by differential leveling and
 JV0756.adjusted by the NATIONAL GEODETIC SURVEY
 JV0756.in June 1991.
 JV0756
 JV0756.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0756.GEOID18 height accuracy estimate available here.
 JV0756
 JV0756.Click photographs - Photos may exist for this station.
 JV0756
 JV0756.The dynamic height is computed by dividing the NAVD 88
 JV0756.geopotential number by the normal gravity value computed on the
 JV0756.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0756.degrees latitude (g = 980.6199 gals.).
 JV0756
 JV0756.The modeled gravity was interpolated from observed gravity values.
 JV0756
 JV0756;                    North         East    Units  Estimated Accuracy
 JV0756;SPC MD       -   194,170.      404,690.      MT  (+/- 180 meters Scaled)
 JV0756
 JV0756_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ325647(NAD 83)
 JV0756
 JV0756                          SUPERSEDED SURVEY CONTROL
 JV0756
 JV0756  NGVD 29 (11/26/84)  195.659  (m)          641.92   (f) ADJUSTED    2 0
 JV0756
 JV0756.Superseded values are not recommended for survey control.
 JV0756
 JV0756.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0756.See file dsdata.pdf to determine how the superseded data were derived.
 JV0756
 JV0756_MARKER: DB = BENCH MARK DISK
 JV0756_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0756_SP_SET: BUILDING
 JV0756_STAMPING: D 45 1941
 JV0756_MARK LOGO: CGS
 JV0756_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0756
 JV0756  HISTORY     - Date     Condition        Report By
 JV0756  HISTORY     - 1941     MONUMENTED       CGS
 JV0756  HISTORY     - 1974     GOOD             MDDT
 JV0756  HISTORY     - 1979     POOR             LOCENG
 JV0756  HISTORY     - 19990603 MARK NOT FOUND   MDSHA
 JV0756
 JV0756                          STATION DESCRIPTION
 JV0756
 JV0756'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0756'0.9 MI NE FROM ELDERSBURG.
 JV0756'ABOUT 0.8 MILE NORTHEAST ALONG STAE HIGHWAY 32 FROM THE CROSSING
 JV0756'OF STATE HIGHWAY 216 AT ELDERSBURG, CARROLL COUNTY, AT THE
 JV0756'ENTRANCE TO THE STRAWBRIDGE METHODIST HOME FOR BOYS, IN THE TOP
 JV0756'OF THE SOUTH END OF THE WEST WALL, 22 FEET WEST OF THE PROLONGATION
 JV0756'OF THE CENTER LINE OF THE ENTRANCE, 21 FEET NORTH OF THE CENTER
 JV0756'LINE OF THE HIGHWAY, AND ABOUT 3.5 FEET ABOVE GROUND.  A STANDARD
 JV0756'DISK, STAMPED D 45 1941.
 JV0756
 JV0756                          STATION RECOVERY (1974)
 JV0756
 JV0756'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1974
 JV0756'RECOVERED IN GOOD CONDITION.
 JV0756
 JV0756                          STATION RECOVERY (1979)
 JV0756
 JV0756'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1979
 JV0756'MARK RECOVERED IN POOR CONDITION.
 JV0756
 JV0756                          STATION RECOVERY (1999)
 JV0756
 JV0756'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV0756'THE MARK WAS SEARCHED FOR AND NOT RECOVERED.  IT APPEARS THE WALL HAS
 JV0756'BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2146 ***********************************************************************
 JV2146  DESIGNATION -  D 46
 JV2146  PID         -  JV2146
 JV2146  STATE/COUNTY-  MD/FREDERICK
 JV2146  COUNTRY     -  US
 JV2146  USGS QUAD   -  URBANA (2016)
 JV2146
 JV2146                         *CURRENT SURVEY CONTROL
 JV2146  ______________________________________________________________________
 JV2146* NAD 83(1986) POSITION- 39 21 41.     (N) 077 22 08.     (W)   SCALED
 JV2146* NAVD 88 ORTHO HEIGHT -    83.857 (meters)      275.12  (feet) ADJUSTED
 JV2146  ______________________________________________________________________
 JV2146  GEOID HEIGHT    -        -32.489 (meters)                     GEOID18
 JV2146  DYNAMIC HEIGHT  -         83.812 (meters)      274.97  (feet) COMP
 JV2146  MODELED GRAVITY -    980,086.7   (mgal)                       NAVD 88
 JV2146
 JV2146  VERT ORDER      -  FIRST     CLASS II
 JV2146
 JV2146.The horizontal coordinates were scaled from a map and have
 JV2146.an estimated accuracy of +/- 6 seconds.
 JV2146
 JV2146.The orthometric height was determined by differential leveling and
 JV2146.adjusted by the NATIONAL GEODETIC SURVEY
 JV2146.in June 1991.
 JV2146
 JV2146.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2146.GEOID18 height accuracy estimate available here.
 JV2146
 JV2146.Click photographs - Photos may exist for this station.
 JV2146
 JV2146.The dynamic height is computed by dividing the NAVD 88
 JV2146.geopotential number by the normal gravity value computed on the
 JV2146.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2146.degrees latitude (g = 980.6199 gals.).
 JV2146
 JV2146.The modeled gravity was interpolated from observed gravity values.
 JV2146
 JV2146;                    North         East    Units  Estimated Accuracy
 JV2146;SPC MD       -   188,190.      368,210.      MT  (+/- 180 meters Scaled)
 JV2146
 JV2146_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ959595(NAD 83)
 JV2146
 JV2146                          SUPERSEDED SURVEY CONTROL
 JV2146
 JV2146  NGVD 29 (11/26/84)   84.077  (m)          275.84   (f) ADJUSTED    1 2
 JV2146
 JV2146.Superseded values are not recommended for survey control.
 JV2146
 JV2146.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2146.See file dsdata.pdf to determine how the superseded data were derived.
 JV2146
 JV2146_MARKER: DB = BENCH MARK DISK
 JV2146_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2146_STAMPING: D 46 1941
 JV2146_MARK LOGO: CGS
 JV2146_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2146+STABILITY: SURFACE MOTION
 JV2146
 JV2146  HISTORY     - Date     Condition        Report By
 JV2146  HISTORY     - 1941     MONUMENTED       CGS
 JV2146  HISTORY     - 1953     MARK NOT FOUND   CGS
 JV2146
 JV2146                          STATION DESCRIPTION
 JV2146
 JV2146'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2146'1.4 MI E FROM FREDERICK.
 JV2146'ABOUT 1.4 MILES EAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2146'THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, AT REELS
 JV2146'MILL, 98.1 FEET NORTHEAST OF THE TWENTY-NINTH POLE WEST OF
 JV2146'MILEPOST 56, AT A ROAD CROSSING, 88.0 FEET SOUTHWEST OF THE
 JV2146'CENTER LINE OF THE ROAD, 24.3 FEET SOUTHEAST OF THE SOUTHEAST
 JV2146'RAIL OF THE EAST-BOUND TRACK, AND 3.0 FEET WEST OF A WHITE
 JV2146'WOODEN POST STENCILED U.S.B.M.  A STANDARD DISK, STAMPED D 46 1941
 JV2146'AND SET IN THE TOP OF A CONCRETE POST.
 JV2146
 JV2146                          STATION RECOVERY (1953)
 JV2146
 JV2146'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953
 JV2146'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0393 ***********************************************************************
 JW0393  DESIGNATION -  D 47
 JW0393  PID         -  JW0393
 JW0393  STATE/COUNTY-  MD/ALLEGANY
 JW0393  COUNTRY     -  US
 JW0393  USGS QUAD   -  PATTERSON CREEK (2016)
 JW0393
 JW0393                         *CURRENT SURVEY CONTROL
 JW0393  ______________________________________________________________________
 JW0393* NAD 83(1986) POSITION- 39 34 44.     (N) 078 43 51.     (W)   SCALED
 JW0393* NAVD 88 ORTHO HEIGHT -   192.587 (meters)      631.85  (feet) ADJUSTED
 JW0393  ______________________________________________________________________
 JW0393  GEOID HEIGHT    -        -32.882 (meters)                     GEOID18
 JW0393  DYNAMIC HEIGHT  -        192.474 (meters)      631.48  (feet) COMP
 JW0393  MODELED GRAVITY -    980,038.3   (mgal)                       NAVD 88
 JW0393
 JW0393  VERT ORDER      -  FIRST     CLASS II
 JW0393
 JW0393.The horizontal coordinates were scaled from a map and have
 JW0393.an estimated accuracy of +/- 6 seconds.
 JW0393
 JW0393.The orthometric height was determined by differential leveling and
 JW0393.adjusted by the NATIONAL GEODETIC SURVEY
 JW0393.in June 1991.
 JW0393
 JW0393.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0393.GEOID18 height accuracy estimate available here.
 JW0393
 JW0393.Click photographs - Photos may exist for this station.
 JW0393
 JW0393.The dynamic height is computed by dividing the NAVD 88
 JW0393.geopotential number by the normal gravity value computed on the
 JW0393.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0393.degrees latitude (g = 980.6199 gals.).
 JW0393
 JW0393.The modeled gravity was interpolated from observed gravity values.
 JW0393
 JW0393;                    North         East    Units  Estimated Accuracy
 JW0393;SPC MD       -   213,680.      251,300.      MT  (+/- 180 meters Scaled)
 JW0393
 JW0393_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD948834(NAD 83)
 JW0393
 JW0393                          SUPERSEDED SURVEY CONTROL
 JW0393
 JW0393  NGVD 29 (??/??/92)  192.780  (m)          632.48   (f) ADJ UNCH    1 2
 JW0393
 JW0393.Superseded values are not recommended for survey control.
 JW0393
 JW0393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0393.See file dsdata.pdf to determine how the superseded data were derived.
 JW0393
 JW0393_MARKER: DB = BENCH MARK DISK
 JW0393_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0393_SP_SET: RETAINING WALL
 JW0393_STAMPING: D 47 1941
 JW0393_MARK LOGO: CGS
 JW0393_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0393
 JW0393  HISTORY     - Date     Condition        Report By
 JW0393  HISTORY     - 1941     MONUMENTED       CGS
 JW0393  HISTORY     - 20010717 MARK NOT FOUND   MDSHA
 JW0393
 JW0393                          STATION DESCRIPTION
 JW0393
 JW0393'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0393'6.8 MI SE FROM CUMBERLAND.
 JW0393'6.8 MILES SOUTHEAST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0393'STATION AT CUMBERLAND, SET IN THE RETAINING WALL, 97 FEET
 JW0393'NORTHWEST OF MILE-POST NO. 159, 39.8 FEET SOUTH OF THE NORTH END
 JW0393'OF THE WALL, 2 FEET NORTHEAST OF THE 6TH. GUARD RAIL POST, 19.7
 JW0393'FEET WEST OF THE WEST RAIL OF THE MAIN TRACK, 16.8 FEET EAST OF
 JW0393'THE CENTER-LINE OF STATE HIGHWAY NO. 51, 2 FEET EAST OF THE WEST
 JW0393'EDGE OF THE WALL.  A STANDARD DISK STAMPED D-47 1941.
 JW0393
 JW0393                          STATION RECOVERY (2001)
 JW0393
 JW0393'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JW0393'THE STATION WAS SEARCHED FOR AND NOT FOUND.  A NEW RETAINING WALL HAS
 JW0393'BEEN CONSTRUCTED AT THE DESCRIBED LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0709 ***********************************************************************
 HV0709  DESIGNATION -  D 49 RESET 1958
 HV0709  PID         -  HV0709
 HV0709  STATE/COUNTY-  MD/CHARLES
 HV0709  COUNTRY     -  US
 HV0709  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0709
 HV0709                         *CURRENT SURVEY CONTROL
 HV0709  ______________________________________________________________________
 HV0709* NAD 83(1986) POSITION- 38 27 19.     (N) 076 52 22.     (W)   SCALED
 HV0709* NAVD 88 ORTHO HEIGHT -    12.08  (meters)       39.6   (feet) RESET
 HV0709  ______________________________________________________________________
 HV0709  GEOID HEIGHT    -        -33.465 (meters)                     GEOID18
 HV0709  VERT ORDER      -  THIRD
 HV0709
 HV0709.The horizontal coordinates were scaled from a map and have
 HV0709.an estimated accuracy of +/- 6 seconds.
 HV0709
 HV0709.The orthometric height was computed from unverified reset data.
 HV0709
 HV0709.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0709.GEOID18 height accuracy estimate available here.
 HV0709
 HV0709.Click photographs - Photos may exist for this station.
 HV0709
 HV0709;                    North         East    Units  Estimated Accuracy
 HV0709;SPC MD       -    87,550.      411,110.      MT  (+/- 180 meters Scaled)
 HV0709
 HV0709_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH365579(NAD 83)
 HV0709
 HV0709                          SUPERSEDED SURVEY CONTROL
 HV0709
 HV0709  NGVD 29 (??/??/??)   12.00   (m)           39.4    (f) RESET       3  
 HV0709
 HV0709.Superseded values are not recommended for survey control.
 HV0709
 HV0709.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0709.See file dsdata.pdf to determine how the superseded data were derived.
 HV0709
 HV0709_MARKER: DB = BENCH MARK DISK
 HV0709_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0709_SP_SET: BRIDGE
 HV0709_STAMPING: D 49 1942 RESET 1958
 HV0709_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0709
 HV0709  HISTORY     - Date     Condition        Report By
 HV0709  HISTORY     - 1958     MONUMENTED       MDSRC
 HV0709
 HV0709                          STATION DESCRIPTION
 HV0709
 HV0709'DESCRIBED BY MD STATE ROADS COMM 1958
 HV0709'3.5 MI N FROM WICOMICO.
 HV0709'3.5 MILES NORTH ALONG STATE HIGHWAY 232 FROM THE JUNCTION OF STATE
 HV0709'HIGHWAY 234 AT WICOMICO, IN THE SOUTHWEST WING WALL OF THE
 HV0709'CONCRETE BRIDGE OVER A SMALL STREAM AND SLIGHTLY LOWER THAN THE
 HV0709'PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0267 ***********************************************************************
 HV0267  DESIGNATION -  D 51
 HV0267  PID         -  HV0267
 HV0267  STATE/COUNTY-  MD/DORCHESTER
 HV0267  COUNTRY     -  US
 HV0267  USGS QUAD   -  CAMBRIDGE (2016)
 HV0267
 HV0267                         *CURRENT SURVEY CONTROL
 HV0267  ______________________________________________________________________
 HV0267* NAD 83(1986) POSITION- 38 32 43.     (N) 076 05 55.     (W)   SCALED
 HV0267* NAVD 88 ORTHO HEIGHT -     3.381 (meters)       11.09  (feet) ADJUSTED
 HV0267  ______________________________________________________________________
 HV0267  GEOID HEIGHT    -        -35.039 (meters)                     GEOID18
 HV0267  DYNAMIC HEIGHT  -          3.379 (meters)       11.09  (feet) COMP
 HV0267  MODELED GRAVITY -    980,015.8   (mgal)                       NAVD 88
 HV0267
 HV0267  VERT ORDER      -  SECOND    CLASS 0
 HV0267
 HV0267.The horizontal coordinates were scaled from a map and have
 HV0267.an estimated accuracy of +/- 6 seconds.
 HV0267
 HV0267.The orthometric height was determined by differential leveling and
 HV0267.adjusted by the NATIONAL GEODETIC SURVEY
 HV0267.in June 1991.
 HV0267
 HV0267.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0267.GEOID18 height accuracy estimate available here.
 HV0267
 HV0267.Click photographs - Photos may exist for this station.
 HV0267
 HV0267.The dynamic height is computed by dividing the NAVD 88
 HV0267.geopotential number by the normal gravity value computed on the
 HV0267.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0267.degrees latitude (g = 980.6199 gals.).
 HV0267
 HV0267.The modeled gravity was interpolated from observed gravity values.
 HV0267
 HV0267;                    North         East    Units  Estimated Accuracy
 HV0267;SPC MD       -    97,920.      478,580.      MT  (+/- 180 meters Scaled)
 HV0267
 HV0267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH042668(NAD 83)
 HV0267
 HV0267                          SUPERSEDED SURVEY CONTROL
 HV0267
 HV0267  NGVD 29 (02/24/95)    3.613  (m)           11.85   (f) ADJUSTED    2 0
 HV0267  NGVD 29 (11/26/84)    3.621  (m)           11.88   (f) SUPERSEDED  2 0
 HV0267
 HV0267.Superseded values are not recommended for survey control.
 HV0267
 HV0267.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0267.See file dsdata.pdf to determine how the superseded data were derived.
 HV0267
 HV0267_MARKER: DB = BENCH MARK DISK
 HV0267_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0267_STAMPING: D 51 1942
 HV0267_MARK LOGO: CGS
 HV0267_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0267+STABILITY: SURFACE MOTION
 HV0267
 HV0267  HISTORY     - Date     Condition        Report By
 HV0267  HISTORY     - 1942     MONUMENTED       CGS
 HV0267  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0267
 HV0267                          STATION DESCRIPTION
 HV0267
 HV0267'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0267'2 MI SW FROM CAMBRIDGE.
 HV0267'THIS MARK IS ABOUT 2 MILES SOUTHWEST ALONG HIGHWAY NUMBER 16
 HV0267'FROM THE INTERSECTION OF RACE AND WASHINGTON STREETS IN CAMBRIDGE,
 HV0267'DORCHESTER COUNTY, AT A FARM ROAD RUNNING NORTH FROM THE HIGHWAY,
 HV0267'56 FEET NORTHEAST OF AN IRON HIGHWAY MARKER NUMBER 26 S, 44.6
 HV0267'FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 8 FEET WEST OF THE
 HV0267'CENTER LINE OF THE FARM ROAD, ABOUT 1 FOOT EAST OF A WIRE FENCE
 HV0267'ROW, AND IS STANDARD DISK SET IN THE TOP OF A CONCRETE POST ABOUT
 HV0267'2 FEET SOUTH OF A STANDARD REFERENCE POST.
 HV0267
 HV0267                          STATION RECOVERY (1971)
 HV0267
 HV0267'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0267'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0467 ***********************************************************************
 HV0467  DESIGNATION -  D 52
 HV0467  PID         -  HV0467
 HV0467  STATE/COUNTY-  MD/DORCHESTER
 HV0467  COUNTRY     -  US
 HV0467  USGS QUAD   -  GOLDEN HILL (2016)
 HV0467
 HV0467                         *CURRENT SURVEY CONTROL
 HV0467  ______________________________________________________________________
 HV0467* NAD 83(1986) POSITION- 38 23 03.5    (N) 076 11 16.2    (W)   HD_HELD2
 HV0467* NAVD 88 ORTHO HEIGHT -     1.119 (meters)        3.67  (feet) ADJUSTED
 HV0467  ______________________________________________________________________
 HV0467  GEOID HEIGHT    -        -35.117 (meters)                     GEOID18
 HV0467  DYNAMIC HEIGHT  -          1.118 (meters)        3.67  (feet) COMP
 HV0467  MODELED GRAVITY -    980,002.2   (mgal)                       NAVD 88
 HV0467
 HV0467  VERT ORDER      -  SECOND    CLASS 0
 HV0467
 HV0467.The horizontal coordinates were established by autonomous hand held GPS
 HV0467.observations and have an estimated accuracy of +/- 10 meters.
 HV0467
 HV0467.The orthometric height was determined by differential leveling and
 HV0467.adjusted by the NATIONAL GEODETIC SURVEY
 HV0467.in June 1991.
 HV0467
 HV0467.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0467.GEOID18 height accuracy estimate available here.
 HV0467
 HV0467.Click photographs - Photos may exist for this station.
 HV0467
 HV0467.The dynamic height is computed by dividing the NAVD 88
 HV0467.geopotential number by the normal gravity value computed on the
 HV0467.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0467.degrees latitude (g = 980.6199 gals.).
 HV0467
 HV0467.The modeled gravity was interpolated from observed gravity values.
 HV0467
 HV0467;                    North         East    Units  Estimated Accuracy
 HV0467;SPC MD       -    79,977.      470,959.      MT  (+/- 10 meters HH2 GPS)
 HV0467
 HV0467_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9625649123(NAD 83)
 HV0467
 HV0467                          SUPERSEDED SURVEY CONTROL
 HV0467
 HV0467  NGVD 29 (11/26/84)    1.341  (m)            4.40   (f) ADJUSTED    2 0
 HV0467
 HV0467.Superseded values are not recommended for survey control.
 HV0467
 HV0467.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0467.See file dsdata.pdf to determine how the superseded data were derived.
 HV0467
 HV0467_MARKER: DB = BENCH MARK DISK
 HV0467_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0467_STAMPING: D 52 1942
 HV0467_MARK LOGO: CGS
 HV0467_PROJECTION: RECESSED 2 CENTIMETERS
 HV0467_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0467+STABILITY: SURFACE MOTION
 HV0467_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0467+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2014
 HV0467
 HV0467  HISTORY     - Date     Condition        Report By
 HV0467  HISTORY     - 1942     MONUMENTED       CGS
 HV0467  HISTORY     - 20140328 GOOD             ARCSHE
 HV0467
 HV0467                          STATION DESCRIPTION
 HV0467
 HV0467'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0467'2.7 MI SE FROM GOLDEN HILL.
 HV0467'THIS MARK IS ALONG HIGHWAY 336, ABOUT 2.7 MILES SOUTHEAST OF THE
 HV0467'POST OFFICE AT GOLDEN HILL, DORCHESTER COUNTY, AT A 2-STORY
 HV0467'YELLOW HOUSE, NEAR THE SOUTHEAST CORNER OF THE YARD, 34.6 FEET
 HV0467'NORTH OF THE CENTER LINE OF THE HIGHWAY, 2 FEET EAST OF THE EAST
 HV0467'YARD FENCE, AND IS A STANDARD DISK SET IN THE TOP OF A
 HV0467'CONCRETE POST.
 HV0467
 HV0467                          STATION RECOVERY (2014)
 HV0467
 HV0467'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0467'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3361 ***********************************************************************
 JV3361  DESIGNATION -  D 54
 JV3361  PID         -  JV3361
 JV3361  STATE/COUNTY-  MD/WASHINGTON
 JV3361  COUNTRY     -  US
 JV3361  USGS QUAD   -  HAGERSTOWN (2016)
 JV3361
 JV3361                         *CURRENT SURVEY CONTROL
 JV3361  ______________________________________________________________________
 JV3361* NAD 83(1986) POSITION- 39 40 49.     (N) 077 40 42.     (W)   SCALED
 JV3361* NAVD 88 ORTHO HEIGHT -   161.960 (meters)      531.36  (feet) ADJUSTED
 JV3361  ______________________________________________________________________
 JV3361  GEOID HEIGHT    -        -34.132 (meters)                     GEOID18
 JV3361  DYNAMIC HEIGHT  -        161.865 (meters)      531.05  (feet) COMP
 JV3361  MODELED GRAVITY -    980,038.2   (mgal)                       NAVD 88
 JV3361
 JV3361  VERT ORDER      -  SECOND    CLASS 0
 JV3361
 JV3361.The horizontal coordinates were scaled from a map and have
 JV3361.an estimated accuracy of +/- 6 seconds.
 JV3361
 JV3361.The orthometric height was determined by differential leveling and
 JV3361.adjusted by the NATIONAL GEODETIC SURVEY
 JV3361.in June 1991.
 JV3361
 JV3361.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3361.GEOID18 height accuracy estimate available here.
 JV3361
 JV3361.Click photographs - Photos may exist for this station.
 JV3361
 JV3361.The dynamic height is computed by dividing the NAVD 88
 JV3361.geopotential number by the normal gravity value computed on the
 JV3361.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3361.degrees latitude (g = 980.6199 gals.).
 JV3361
 JV3361.The modeled gravity was interpolated from observed gravity values.
 JV3361
 JV3361;                    North         East    Units  Estimated Accuracy
 JV3361;SPC MD       -   223,750.      341,800.      MT  (+/- 180 meters Scaled)
 JV3361
 JV3361_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ702957(NAD 83)
 JV3361
 JV3361                          SUPERSEDED SURVEY CONTROL
 JV3361
 JV3361  NGVD 29 (11/26/84)  162.148  (m)          531.98   (f) ADJUSTED    2 0
 JV3361
 JV3361.Superseded values are not recommended for survey control.
 JV3361
 JV3361.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3361.See file dsdata.pdf to determine how the superseded data were derived.
 JV3361
 JV3361_MARKER: DB = BENCH MARK DISK
 JV3361_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3361_SP_SET: BRIDGE
 JV3361_STAMPING: D 54 1942
 JV3361_MARK LOGO: CGS
 JV3361_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3361
 JV3361  HISTORY     - Date     Condition        Report By
 JV3361  HISTORY     - 1942     MONUMENTED       CGS
 JV3361  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3361
 JV3361                          STATION DESCRIPTION
 JV3361
 JV3361'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3361'4.2 MI NE FROM HAGERSTOWN.
 JV3361'4.2 MILES NORTHEAST ALONG STATE HIGHWAY NO. 60 FROM THE COURTHOUSE
 JV3361'AT HAGERSTOWN, IN THE WEST END OF A CONCRETE RETAINING WALL OF
 JV3361'THE MARSH RUN BRIDGE, ABOUT 0.1 MILE WEST OF AN AMACO SERVICE
 JV3361'STATION, 11.8 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, AND
 JV3361'0.9 FEET EAST OF THE EAST END OF THE NORTH HEAD WALL.  A STANDARD
 JV3361'DISC.
 JV3361
 JV3361                          STATION RECOVERY (1998)
 JV3361
 JV3361'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3361'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  IT APPEARS THE
 JV3361'STATION WAS DESTROYED BY THE CONSTRUCTION OF A NEW BOX CULVERT OVER
 JV3361'MARSH RUN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3362 ***********************************************************************
 JV3362  DESIGNATION -  D 54 RESET
 JV3362  PID         -  JV3362
 JV3362  STATE/COUNTY-  MD/WASHINGTON
 JV3362  COUNTRY     -  US
 JV3362  USGS QUAD   -  HAGERSTOWN (2016)
 JV3362
 JV3362                         *CURRENT SURVEY CONTROL
 JV3362  ______________________________________________________________________
 JV3362* NAD 83(1986) POSITION- 39 40 49.     (N) 077 40 42.     (W)   SCALED
 JV3362* NAVD 88 ORTHO HEIGHT -   162.09  (meters)      531.8   (feet) RESET
 JV3362  ______________________________________________________________________
 JV3362  GEOID HEIGHT    -        -34.132 (meters)                     GEOID18
 JV3362  VERT ORDER      -  THIRD
 JV3362
 JV3362.The horizontal coordinates were scaled from a map and have
 JV3362.an estimated accuracy of +/- 6 seconds.
 JV3362
 JV3362.The orthometric height was computed from unverified reset data.
 JV3362
 JV3362.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3362.GEOID18 height accuracy estimate available here.
 JV3362
 JV3362.Click photographs - Photos may exist for this station.
 JV3362
 JV3362;                    North         East    Units  Estimated Accuracy
 JV3362;SPC MD       -   223,750.      341,800.      MT  (+/- 180 meters Scaled)
 JV3362
 JV3362_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ702957(NAD 83)
 JV3362
 JV3362                          SUPERSEDED SURVEY CONTROL
 JV3362
 JV3362  NGVD 29 (??/??/??)  162.28   (m)          532.4    (f) RESET       3  
 JV3362
 JV3362.Superseded values are not recommended for survey control.
 JV3362
 JV3362.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3362.See file dsdata.pdf to determine how the superseded data were derived.
 JV3362
 JV3362_MARKER: DB = BENCH MARK DISK
 JV3362_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3362_STAMPING: D 54 RESET 1951
 JV3362_MARK LOGO: CGS
 JV3362_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3362+STABILITY: SURFACE MOTION
 JV3362
 JV3362  HISTORY     - Date     Condition        Report By
 JV3362  HISTORY     - 1951     MONUMENTED       MDSRC
 JV3362  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3362
 JV3362                          STATION DESCRIPTION
 JV3362
 JV3362'DESCRIBED BY MD STATE ROADS COMM 1951
 JV3362'4.2 MI NE FROM HAGERSTOWN.
 JV3362'4.2 MILES NORTHEAST ALONG STATE HIGHWAY 60 FROM THE COURTHOUSE AT
 JV3362'HAGERSTOWN, WASHINGTON COUNTY, 0.1 MILE WEST OF AN AMOCO SERVICE
 JV3362'STATION, 120 FEET EAST OF THE MARSH RUN BRIDGE, 15 FEET EAST OF A
 JV3362'SMALL STREAM, NEAR A BILLBOARD, AND 53 FEET SOUTH OF THE CENTERLINE
 JV3362'OF THE HIGHWAY.  A STANDARD DISK, STAMPED D 54 RESET 1951 AND
 JV3362'SET IN THE TOP OF A CONCRETE POST.
 JV3362
 JV3362                          STATION RECOVERY (1998)
 JV3362
 JV3362'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3362'THE STATION WAS SEARCHED FOR AND NOT FOUND.  THE BILLBOARD HAS BEEN
 JV3362'REMOVED AND THE DESCRIBED LOCATION HAS BEEN DEVELOPED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0309 ***********************************************************************
 HU0309  DESIGNATION -  D 55
 HU0309  PID         -  HU0309
 HU0309  STATE/COUNTY-  MD/WORCESTER
 HU0309  COUNTRY     -  US
 HU0309  USGS QUAD   -  NINEPIN BRANCH (2016)
 HU0309
 HU0309                         *CURRENT SURVEY CONTROL
 HU0309  ______________________________________________________________________
 HU0309* NAD 83(1986) POSITION- 38 15 44.     (N) 075 20 15.     (W)   SCALED
 HU0309* NAVD 88 ORTHO HEIGHT -     8.350 (meters)       27.40  (feet) ADJUSTED
 HU0309  ______________________________________________________________________
 HU0309  GEOID HEIGHT    -        -36.096 (meters)                     GEOID18
 HU0309  DYNAMIC HEIGHT  -          8.345 (meters)       27.38  (feet) COMP
 HU0309  MODELED GRAVITY -    979,995.2   (mgal)                       NAVD 88
 HU0309
 HU0309  VERT ORDER      -  SECOND    CLASS 0
 HU0309
 HU0309.The horizontal coordinates were scaled from a map and have
 HU0309.an estimated accuracy of +/- 6 seconds.
 HU0309
 HU0309.The orthometric height was determined by differential leveling and
 HU0309.adjusted by the NATIONAL GEODETIC SURVEY
 HU0309.in June 1991.
 HU0309
 HU0309.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0309.GEOID18 height accuracy estimate available here.
 HU0309
 HU0309.Click photographs - Photos may exist for this station.
 HU0309
 HU0309.The dynamic height is computed by dividing the NAVD 88
 HU0309.geopotential number by the normal gravity value computed on the
 HU0309.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0309.degrees latitude (g = 980.6199 gals.).
 HU0309
 HU0309.The modeled gravity was interpolated from observed gravity values.
 HU0309
 HU0309;                    North         East    Units  Estimated Accuracy
 HU0309;SPC MD       -    67,430.      545,490.      MT  (+/- 180 meters Scaled)
 HU0309
 HU0309_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH704349(NAD 83)
 HU0309
 HU0309                          SUPERSEDED SURVEY CONTROL
 HU0309
 HU0309  NGVD 29 (11/26/84)    8.582  (m)           28.16   (f) ADJUSTED    2 0
 HU0309
 HU0309.Superseded values are not recommended for survey control.
 HU0309
 HU0309.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0309.See file dsdata.pdf to determine how the superseded data were derived.
 HU0309
 HU0309_MARKER: DB = BENCH MARK DISK
 HU0309_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0309_STAMPING: D 55 1942
 HU0309_MARK LOGO: CGS
 HU0309_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0309+STABILITY: SURFACE MOTION
 HU0309
 HU0309  HISTORY     - Date     Condition        Report By
 HU0309  HISTORY     - 1942     MONUMENTED       CGS
 HU0309  HISTORY     - 1962     GOOD             CGS
 HU0309  HISTORY     - 1975     MARK NOT FOUND   USGS
 HU0309
 HU0309                          STATION DESCRIPTION
 HU0309
 HU0309'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0309'2.6 MI NW FROM NEWARK.
 HU0309'2.6 MILES NORTHWEST ALONG A TAR ROAD FROM THE JUNCTION OF U.S.
 HU0309'HIGHWAY 113 SOUTH OF NEWARK, WORCESTER COUNTY, 3 FEET SOUTHEAST OF
 HU0309'R.E.A. POLE 22-30, 19.5 FEET SOUTHEAST OF THE CENTER LINE OF A
 HU0309'DIRT ROAD LEADING TO A FARMHOUSE, IN THE NORTH CORNER OF A
 HU0309'CULTIVATED FIELD, 20.5 FEET SOUTHWEST OF THE CENTER LINE OF THE
 HU0309'ROAD, AND ABOUT 2 FEET LOWER THAN THE ROAD.  A STANDARD DISK,
 HU0309'STAMPED D 55 1942 AND SET IN THE TOP OF A CONCRETE POST.
 HU0309
 HU0309                          STATION RECOVERY (1975)
 HU0309
 HU0309'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1975
 HU0309'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0389 ***********************************************************************
 HU0389  DESIGNATION -  D 56 RESET
 HU0389  PID         -  HU0389
 HU0389  STATE/COUNTY-  MD/WORCESTER
 HU0389  COUNTRY     -  US
 HU0389  USGS QUAD   -  BERLIN (2016)
 HU0389
 HU0389                         *CURRENT SURVEY CONTROL
 HU0389  ______________________________________________________________________
 HU0389* NAD 83(1986) POSITION- 38 17 38.4    (N) 075 09 39.9    (W)   HD_HELD2
 HU0389* NAVD 88 ORTHO HEIGHT -     0.465 (meters)        1.53  (feet) ADJUSTED
 HU0389  ______________________________________________________________________
 HU0389  GEOID HEIGHT    -        -36.089 (meters)                     GEOID18
 HU0389  DYNAMIC HEIGHT  -          0.464 (meters)        1.52  (feet) COMP
 HU0389  MODELED GRAVITY -    980,002.5   (mgal)                       NAVD 88
 HU0389
 HU0389  VERT ORDER      -  SECOND    CLASS I
 HU0389
 HU0389.The horizontal coordinates were established by autonomous hand held GPS
 HU0389.observations and have an estimated accuracy of +/- 10 meters.
 HU0389
 HU0389.The orthometric height was determined by differential leveling and
 HU0389.adjusted by the NATIONAL GEODETIC SURVEY
 HU0389.in June 1991.
 HU0389
 HU0389.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0389.GEOID18 height accuracy estimate available here.
 HU0389
 HU0389.Click photographs - Photos may exist for this station.
 HU0389
 HU0389.The dynamic height is computed by dividing the NAVD 88
 HU0389.geopotential number by the normal gravity value computed on the
 HU0389.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0389.degrees latitude (g = 980.6199 gals.).
 HU0389
 HU0389.The modeled gravity was interpolated from observed gravity values.
 HU0389
 HU0389;                    North         East    Units  Estimated Accuracy
 HU0389;SPC MD       -    71,257.      560,859.      MT  (+/- 10 meters HH2 GPS)
 HU0389
 HU0389_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8591338448(NAD 83)
 HU0389
 HU0389                          SUPERSEDED SURVEY CONTROL
 HU0389
 HU0389  NGVD 29 (11/26/84)    0.702  (m)            2.30   (f) ADJUSTED    2 1
 HU0389
 HU0389.Superseded values are not recommended for survey control.
 HU0389
 HU0389.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0389.See file dsdata.pdf to determine how the superseded data were derived.
 HU0389
 HU0389_MARKER: DB = BENCH MARK DISK
 HU0389_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0389_STAMPING: D-56 1942 RESET 1965
 HU0389_MARK LOGO: CGS
 HU0389_PROJECTION: FLUSH
 HU0389_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0389+STABILITY: SURFACE MOTION
 HU0389_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0389+SATELLITE: SATELLITE OBSERVATIONS - September 24, 2014
 HU0389
 HU0389  HISTORY     - Date     Condition        Report By
 HU0389  HISTORY     - 1965     MONUMENTED       MDDT
 HU0389  HISTORY     - 1977     GOOD             NGS
 HU0389  HISTORY     - 20031230 GOOD             USPSQD
 HU0389  HISTORY     - 20051203 GOOD             USPSQD
 HU0389  HISTORY     - 20140924 GOOD             ARCSHE
 HU0389
 HU0389                          STATION DESCRIPTION
 HU0389
 HU0389'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1965
 HU0389'5.4 MI SE FROM BERLIN.
 HU0389'5.4 MILES SOUTHEAST OF BERLIN AND 5.0 MILES SOUTHWEST OF OCEAN
 HU0389'CITY.  46.5 FEET NORTH OF THE CENTERLINE OF MARYLAND 376, AND
 HU0389'68.0 FEET SOUTHEAST OF THE CENTERLINE OF A DRIVEWAY TO A TWO
 HU0389'STORY GRAY SHINGLE FRAME HOUSE JUST SOUTHEAST OF THE BRIDGE OVER
 HU0389'AYER CREEK SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES.
 HU0389'TO REACH FROM THE JUNCTION OF U.S. 113 AND MARYLAND 376 2.0 MILES
 HU0389'SOUTH OF BERLIN PROCEED SOUTHEAST ALONG MARYLAND 376 FOR 3.4 MILES
 HU0389'TO THE STATION.
 HU0389
 HU0389                          STATION RECOVERY (1977)
 HU0389
 HU0389'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU0389'RECOVERED IN GOOD CONDITION.
 HU0389
 HU0389                          STATION RECOVERY (2003)
 HU0389
 HU0389'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0389'RECOVERED IN GOOD CONDITION.
 HU0389
 HU0389                          STATION RECOVERY (2005)
 HU0389
 HU0389'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU0389'RECOVERED IN GOOD CONDITION.
 HU0389
 HU0389                          STATION RECOVERY (2014)
 HU0389
 HU0389'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HU0389'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0583 ***********************************************************************
 HU0583  DESIGNATION -  D 57
 HU0583  PID         -  HU0583
 HU0583  STATE/COUNTY-  MD/SOMERSET
 HU0583  COUNTRY     -  US
 HU0583  USGS QUAD   -  DEAL ISLAND (2016)
 HU0583
 HU0583                         *CURRENT SURVEY CONTROL
 HU0583  ______________________________________________________________________
 HU0583* NAD 83(1986) POSITION- 38 09 21.     (N) 075 56 55.     (W)   SCALED
 HU0583* NAVD 88 ORTHO HEIGHT -     1.999 (meters)        6.56  (feet) ADJUSTED
 HU0583  ______________________________________________________________________
 HU0583  GEOID HEIGHT    -        -35.799 (meters)                     GEOID18
 HU0583  DYNAMIC HEIGHT  -          1.997 (meters)        6.55  (feet) COMP
 HU0583  MODELED GRAVITY -    979,984.2   (mgal)                       NAVD 88
 HU0583
 HU0583  VERT ORDER      -  FIRST     CLASS I
 HU0583
 HU0583.The horizontal coordinates were scaled from a map and have
 HU0583.an estimated accuracy of +/- 6 seconds.
 HU0583
 HU0583.The orthometric height was determined by differential leveling and
 HU0583.adjusted by the NATIONAL GEODETIC SURVEY
 HU0583.in June 1991.
 HU0583
 HU0583.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0583.GEOID18 height accuracy estimate available here.
 HU0583
 HU0583.Click photographs - Photos may exist for this station.
 HU0583
 HU0583.The dynamic height is computed by dividing the NAVD 88
 HU0583.geopotential number by the normal gravity value computed on the
 HU0583.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0583.degrees latitude (g = 980.6199 gals.).
 HU0583
 HU0583.The modeled gravity was interpolated from observed gravity values.
 HU0583
 HU0583;                    North         East    Units  Estimated Accuracy
 HU0583;SPC MD       -    54,830.      492,150.      MT  (+/- 180 meters Scaled)
 HU0583
 HU0583_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH168235(NAD 83)
 HU0583
 HU0583                          SUPERSEDED SURVEY CONTROL
 HU0583
 HU0583  NGVD 29 (11/26/84)    2.257  (m)            7.40   (f) ADJUSTED    1 1
 HU0583
 HU0583.Superseded values are not recommended for survey control.
 HU0583
 HU0583.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0583.See file dsdata.pdf to determine how the superseded data were derived.
 HU0583
 HU0583_MARKER: DB = BENCH MARK DISK
 HU0583_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0583_STAMPING: D 57 1942
 HU0583_MARK LOGO: CGS
 HU0583_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0583_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0583+STABILITY: SURFACE MOTION
 HU0583_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0583+SATELLITE: SATELLITE OBSERVATIONS - April 09, 2001
 HU0583
 HU0583  HISTORY     - Date     Condition        Report By
 HU0583  HISTORY     - 1942     MONUMENTED       CGS
 HU0583  HISTORY     - 1963     GOOD             CGS
 HU0583  HISTORY     - 19870928 GOOD             NGS
 HU0583  HISTORY     - 19881031 GOOD             MDSHA
 HU0583  HISTORY     - 20010409 GOOD             MDSHA
 HU0583
 HU0583                          STATION DESCRIPTION
 HU0583
 HU0583'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0583'3.9 MI W FROM DAMES QUARTER.
 HU0583'3.9 MILES WEST ALONG STATE HIGHWAY 363 FROM THE POST OFFICE AT
 HU0583'DAMES QUARTER, ON DEAL ISLAND, AT THE NORTHWEST CORNER OF THE ST.
 HU0583'JOHNS METHODIST CHURCH AND CEMETERY, 18.2 FEET EAST OF CENTER LINE
 HU0583'OF HIGHWAY, 22.3 FEET NORTH OF THE BRADSHAW TOMBSTONE, 5 FEET
 HU0583'SOUTHEAST OF SOUTHEAST CORNER OF THE WINDSOR TOMBSTONE, ABOUT LEVEL
 HU0583'WITH HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 HU0583'GROUND.
 HU0583
 HU0583                          STATION RECOVERY (1987)
 HU0583
 HU0583'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU0583'RECOVERED AS DESCRIBED.
 HU0583
 HU0583                          STATION RECOVERY (1988)
 HU0583
 HU0583'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1988
 HU0583'RECOVERED IN GOOD CONDITION.
 HU0583
 HU0583                          STATION RECOVERY (2001)
 HU0583
 HU0583'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU0583'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0475 ***********************************************************************
 HV0475  DESIGNATION -  D 59
 HV0475  PID         -  HV0475
 HV0475  STATE/COUNTY-  MD/DORCHESTER
 HV0475  COUNTRY     -  US
 HV0475  USGS QUAD   -  WINGATE (2016)
 HV0475
 HV0475                         *CURRENT SURVEY CONTROL
 HV0475  ______________________________________________________________________
 HV0475* NAD 83(1986) POSITION- 38 19 01.5    (N) 076 06 52.9    (W)   HD_HELD2
 HV0475* NAVD 88 ORTHO HEIGHT -     0.710 (meters)        2.33  (feet) ADJUSTED
 HV0475  ______________________________________________________________________
 HV0475  GEOID HEIGHT    -        -35.380 (meters)                     GEOID18
 HV0475  DYNAMIC HEIGHT  -          0.709 (meters)        2.33  (feet) COMP
 HV0475  MODELED GRAVITY -    979,994.9   (mgal)                       NAVD 88
 HV0475
 HV0475  VERT ORDER      -  SECOND    CLASS 0
 HV0475
 HV0475.The horizontal coordinates were established by autonomous hand held GPS
 HV0475.observations and have an estimated accuracy of +/- 10 meters.
 HV0475
 HV0475.The orthometric height was determined by differential leveling and
 HV0475.adjusted by the NATIONAL GEODETIC SURVEY
 HV0475.in June 1991.
 HV0475
 HV0475.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0475.GEOID18 height accuracy estimate available here.
 HV0475
 HV0475.Click photographs - Photos may exist for this station.
 HV0475
 HV0475.The dynamic height is computed by dividing the NAVD 88
 HV0475.geopotential number by the normal gravity value computed on the
 HV0475.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0475.degrees latitude (g = 980.6199 gals.).
 HV0475
 HV0475.The modeled gravity was interpolated from observed gravity values.
 HV0475
 HV0475;                    North         East    Units  Estimated Accuracy
 HV0475;SPC MD       -    72,575.      477,421.      MT  (+/- 10 meters HH2 GPS)
 HV0475
 HV0475_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0255441584(NAD 83)
 HV0475
 HV0475                          SUPERSEDED SURVEY CONTROL
 HV0475
 HV0475  NGVD 29 (11/26/84)    0.934  (m)            3.06   (f) ADJUSTED    2 0
 HV0475
 HV0475.Superseded values are not recommended for survey control.
 HV0475
 HV0475.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0475.See file dsdata.pdf to determine how the superseded data were derived.
 HV0475
 HV0475_MARKER: DB = BENCH MARK DISK
 HV0475_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0475_STAMPING: D 59 1942
 HV0475_MARK LOGO: CGS
 HV0475_PROJECTION: FLUSH
 HV0475_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0475+STABILITY: SURFACE MOTION
 HV0475_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0475+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2014
 HV0475
 HV0475  HISTORY     - Date     Condition        Report By
 HV0475  HISTORY     - 1942     MONUMENTED       CGS
 HV0475  HISTORY     - 20140328 GOOD             ARCSHE
 HV0475
 HV0475                          STATION DESCRIPTION
 HV0475
 HV0475'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0475'1.1 MI NW FROM WINGATE.
 HV0475'THIS MARK IS ALONG HIGHWAY 336 ABOUT 1.1 MILES NORTHWEST OF THE
 HV0475'COUNTY TRUST COMPANY BUILDING AT WINGATE, DORCHESTER COUNTY,
 HV0475'AT A WHITE CHURCH BUILDING AND CEMETERY, 90 FEET SOUTHEAST OF
 HV0475'THE SOUTHEAST CORNER OF THE CHURCH, 30.5 FEET WEST OF THE CENTER
 HV0475'LINE OF THE HIGHWAY, ABOUT 5 FEET SOUTHEAST OF A 36-INCH WHITE
 HV0475'OAK TREE, ABOUT 1 FOOT WEST OF A ROW OF WHITE WOODEN FENCE POSTS,
 HV0475'AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST.
 HV0475
 HV0475                          STATION RECOVERY (2014)
 HV0475
 HV0475'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0475'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE1975 ***********************************************************************
 AE1975  DESIGNATION -  D 6 RESET
 AE1975  PID         -  AE1975
 AE1975  STATE/COUNTY-  MD/WICOMICO
 AE1975  COUNTRY     -  US
 AE1975  USGS QUAD   -  EDEN (2016)
 AE1975
 AE1975                         *CURRENT SURVEY CONTROL
 AE1975  ______________________________________________________________________
 AE1975* NAD 83(1986) POSITION- 38 17 58.     (N) 075 38 11.     (W)   SCALED
 AE1975* NAVD 88 ORTHO HEIGHT -    12.62  (meters)       41.4   (feet) RESET
 AE1975  ______________________________________________________________________
 AE1975  GEOID HEIGHT    -        -35.903 (meters)                     GEOID18
 AE1975  VERT ORDER      -  THIRD
 AE1975
 AE1975.The horizontal coordinates were scaled from a map and have
 AE1975.an estimated accuracy of +/- 6 seconds.
 AE1975
 AE1975.The orthometric height was computed from unverified reset data.
 AE1975
 AE1975.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE1975.GEOID18 height accuracy estimate available here.
 AE1975
 AE1975.Click photographs - Photos may exist for this station.
 AE1975
 AE1975;                    North         East    Units  Estimated Accuracy
 AE1975;SPC MD       -    71,130.      519,280.      MT  (+/- 180 meters Scaled)
 AE1975
 AE1975_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH443392(NAD 83)
 AE1975
 AE1975                          SUPERSEDED SURVEY CONTROL
 AE1975
 AE1975.No superseded survey control is available for this station.
 AE1975
 AE1975_MARKER: DB = BENCH MARK DISK
 AE1975_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE1975_STAMPING: D 6 RESET 1955
 AE1975_MARK LOGO: CGS
 AE1975_MAGNETIC: N = NO MAGNETIC MATERIAL
 AE1975_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE1975+STABILITY: SURFACE MOTION
 AE1975
 AE1975  HISTORY     - Date     Condition        Report By
 AE1975  HISTORY     - 1955     MONUMENTED       MDBCSM
 AE1975
 AE1975                          STATION DESCRIPTION
 AE1975
 AE1975'DESCRIBED BY MD BUR SURV AND MAPS 1955 (EWM)
 AE1975'ABOUT 1.9 MILES (3.1 KM) SOUTH ALONG PENNA.  RAILROAD FROM THE STATION
 AE1975'AT FRUITLAND WICOMICO COUNTY, ABOUT 2.680 FEET (0.817 M) SOUTH OF
 AE1975'MILEPOST 11, 101 FEET (30.8 M) EAST OF THE CENTERLINE OF THE NORTH
 AE1975'BOUND LANE OF US ROUTE 13, 46 FEET (14.0 M) NORTH OF THE CENTER OF A
 AE1975'DIRT ROAD CROSSING, 20 FEET (6.1 M) EAST OF THE EAST GAGE OF THE
 AE1975'NORTHBOUND TRACK, 5.5 FEET (1.7 M) EAST OF A POWER POLE WITH NO
 AE1975'NUMBER.  A STANDARD DISK, STAMPED D-6 RESET 1955.SET IN A CONCRETE
 AE1975'POST PROJECTING ABOUT 6 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0648 ***********************************************************************
 HU0648  DESIGNATION -  D 60
 HU0648  PID         -  HU0648
 HU0648  STATE/COUNTY-  MD/DORCHESTER
 HU0648  COUNTRY     -  US
 HU0648  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU0648
 HU0648                         *CURRENT SURVEY CONTROL
 HU0648  ______________________________________________________________________
 HU0648* NAD 83(1986) POSITION- 38 26 13.     (N) 075 50 52.     (W)   SCALED
 HU0648* NAVD 88 ORTHO HEIGHT -     1.468 (meters)        4.82  (feet) ADJUSTED
 HU0648  ______________________________________________________________________
 HU0648  GEOID HEIGHT    -        -35.520 (meters)                     GEOID18
 HU0648  DYNAMIC HEIGHT  -          1.467 (meters)        4.81  (feet) COMP
 HU0648  MODELED GRAVITY -    980,012.2   (mgal)                       NAVD 88
 HU0648
 HU0648  VERT ORDER      -  SECOND    CLASS 0
 HU0648
 HU0648.The horizontal coordinates were scaled from a map and have
 HU0648.an estimated accuracy of +/- 6 seconds.
 HU0648
 HU0648.The orthometric height was determined by differential leveling and
 HU0648.adjusted by the NATIONAL GEODETIC SURVEY
 HU0648.in June 1991.
 HU0648
 HU0648.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0648.GEOID18 height accuracy estimate available here.
 HU0648
 HU0648.Click photographs - Photos may exist for this station.
 HU0648
 HU0648.The dynamic height is computed by dividing the NAVD 88
 HU0648.geopotential number by the normal gravity value computed on the
 HU0648.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0648.degrees latitude (g = 980.6199 gals.).
 HU0648
 HU0648.The modeled gravity was interpolated from observed gravity values.
 HU0648
 HU0648;                    North         East    Units  Estimated Accuracy
 HU0648;SPC MD       -    86,140.      500,590.      MT  (+/- 180 meters Scaled)
 HU0648
 HU0648_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH260546(NAD 83)
 HU0648
 HU0648                          SUPERSEDED SURVEY CONTROL
 HU0648
 HU0648  NGVD 29 (11/26/84)    1.708  (m)            5.60   (f) ADJUSTED    2 0
 HU0648
 HU0648.Superseded values are not recommended for survey control.
 HU0648
 HU0648.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0648.See file dsdata.pdf to determine how the superseded data were derived.
 HU0648
 HU0648_MARKER: DB = BENCH MARK DISK
 HU0648_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0648_STAMPING: D 60 1942
 HU0648_MARK LOGO: CGS
 HU0648_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0648+STABILITY: SURFACE MOTION
 HU0648
 HU0648  HISTORY     - Date     Condition        Report By
 HU0648  HISTORY     - 1942     MONUMENTED       CGS
 HU0648  HISTORY     - 1964     GOOD             CGS
 HU0648
 HU0648                          STATION DESCRIPTION
 HU0648
 HU0648'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0648'3.8 MI S FROM VIENNA.
 HU0648'THIS MARK IS ALONG A TAR AND GRAVEL ROAD ABOUT 3.8 MILES SOUTH
 HU0648'FROM THE HIGH SCHOOL AT VIENNA, DORCHESTER COUNTY, AT A 1-STORY
 HU0648'WHITE FARM HOUSE, IN THE SOUTHEAST CORNER OF THE YARD NEAR A ROW
 HU0648'OF SHRUBS, 1 FOOT EAST OF A WIRE FENCE, 28.8 FEET WEST OF THE
 HU0648'CENTER LINE OF THE ROAD, AND IS A STANDARD DISK SET IN THE TOP
 HU0648'OF A CONCRETE POST PROJECTING ABOUT 5 INCHES.
 HU0648
 HU0648                          STATION RECOVERY (1964)
 HU0648
 HU0648'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HU0648'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0295 ***********************************************************************
 HU0295  DESIGNATION -  D 61
 HU0295  PID         -  HU0295
 HU0295  STATE/COUNTY-  MD/WORCESTER
 HU0295  COUNTRY     -  US
 HU0295  USGS QUAD   -  SNOW HILL (2016)
 HU0295
 HU0295                         *CURRENT SURVEY CONTROL
 HU0295  ______________________________________________________________________
 HU0295* NAD 83(2011) POSITION- 38 11 33.13567(N) 075 26 54.45038(W)   ADJUSTED
 HU0295* NAD 83(2011) ELLIP HT-   -30.252 (meters)        (04/11/25)   ADJUSTED
 HU0295* NAD 83(2011) EPOCH   -  2010.00
 HU0295* NAVD 88 ORTHO HEIGHT -     5.932 (meters)       19.46  (feet) ADJUSTED
 HU0295  ______________________________________________________________________
 HU0295  GEOID HEIGHT    -        -36.174 (meters)                     GEOID18
 HU0295  NAD 83(2011) X  -  1,261,083.075 (meters)                     COMP
 HU0295  NAD 83(2011) Y  - -4,858,213.294 (meters)                     COMP
 HU0295  NAD 83(2011) Z  -  3,922,243.982 (meters)                     COMP
 HU0295  LAPLACE CORR    -         -0.49  (seconds)                    DEFLEC18
 HU0295  DYNAMIC HEIGHT  -          5.928 (meters)       19.45  (feet) COMP
 HU0295  MODELED GRAVITY -    979,986.3   (mgal)                       NAVD 88
 HU0295
 HU0295  VERT ORDER      -  SECOND    CLASS 0
 HU0295
 HU0295  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0295  Standards:
 HU0295         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0295            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0295  -------------------------------------------------------------------
 HU0295  NETWORK    0.55   1.61           0.24   0.21   0.82     -0.00570601
 HU0295  -------------------------------------------------------------------
 HU0295  Click here for local accuracies and other accuracy information.
 HU0295
 HU0295.The horizontal coordinates were established by GPS observations
 HU0295.and adjusted by the MD DEPT OF TRANSP in April 2025.
 HU0295
 HU0295.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0295.been affixed to the stable North American tectonic plate. See 
 HU0295.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0295
 HU0295.The horizontal coordinates are valid at the epoch date displayed above
 HU0295.which is a decimal equivalence of Year/Month/Day.
 HU0295
 HU0295.The orthometric height was determined by differential leveling and
 HU0295.adjusted by the NATIONAL GEODETIC SURVEY
 HU0295.in June 1991.
 HU0295
 HU0295.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0295.GEOID18 height accuracy estimate available here.
 HU0295
 HU0295.Click photographs - Photos may exist for this station.
 HU0295
 HU0295.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0295
 HU0295.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0295
 HU0295.The ellipsoidal height was determined by GPS observations
 HU0295.and is referenced to NAD 83.
 HU0295
 HU0295.The dynamic height is computed by dividing the NAVD 88
 HU0295.geopotential number by the normal gravity value computed on the
 HU0295.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0295.degrees latitude (g = 980.6199 gals.).
 HU0295
 HU0295.The modeled gravity was interpolated from observed gravity values.
 HU0295
 HU0295. The following values were computed from the NAD 83(2011) position.
 HU0295
 HU0295;                    North         East     Units Scale Factor Converg.
 HU0295;SPC MD       -    59,529.331   535,914.882   MT  1.00002043   +0 58 25.7
 HU0295;SPC MD       -   195,305.81  1,758,247.41   sFT  1.00002043   +0 58 25.7
 HU0295;UTM  18      - 4,227,272.853   460,729.617   MT  0.99961899   -0 16 38.2
 HU0295
 HU0295!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0295!SPC MD       -   1.00000475  x   1.00002043  =   1.00002518
 HU0295!UTM  18      -   1.00000475  x   0.99961899  =   0.99962374
 HU0295
 HU0295_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6072927272(NAD 83)
 HU0295
 HU0295                          SUPERSEDED SURVEY CONTROL
 HU0295
 HU0295  NGVD 29 (11/26/84)    6.176  (m)           20.26   (f) ADJUSTED    2 0
 HU0295
 HU0295.Superseded values are not recommended for survey control.
 HU0295
 HU0295.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0295.See file dsdata.pdf to determine how the superseded data were derived.
 HU0295
 HU0295_MARKER: DB = BENCH MARK DISK
 HU0295_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0295_STAMPING: D 61 1942
 HU0295_MARK LOGO: CGS
 HU0295_PROJECTION: PROJECTING 15 CENTIMETERS
 HU0295_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0295+STABILITY: SURFACE MOTION
 HU0295_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0295+SATELLITE: SATELLITE OBSERVATIONS - October 24, 2019
 HU0295
 HU0295  HISTORY     - Date     Condition        Report By
 HU0295  HISTORY     - 1942     MONUMENTED       CGS
 HU0295  HISTORY     - 1962     GOOD             CGS
 HU0295  HISTORY     - 20061008 GOOD             USPSQD
 HU0295  HISTORY     - 20191024 GOOD             ARCSHE
 HU0295
 HU0295                          STATION DESCRIPTION
 HU0295
 HU0295'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0295'3.7 MI W FROM SNOW HILL.
 HU0295'2.8 MILES NORTHWEST ALONG STATE HIGHWAY 12 FROM THE DRAWBRIDGE
 HU0295'OVER POCOMOKE RIVER AT SNOW HILL, WORCESTER COUNTY, THENCE ABOUT
 HU0295'0.9 MILE SOUTHWEST ALONG A DIRT ROAD, ABOUT 0.1 MILE WEST OF A
 HU0295'SCHOOL AND CHURCH BUILDING, AT A FARM ROAD LEADING NORTH TO A
 HU0295'2-STORY YELLOW FARMHOUSE, 31 FEET NORTH OF THE CENTER LINE OF THE
 HU0295'MAIN ROAD, 12.5 FEET EAST OF THE CENTER LINE OF THE FARM ROAD,
 HU0295'ABOUT MIDWAY BETWEEN A POWER-TRANSMISSION LINE POLE AND A
 HU0295'WOODEN WITNESS POST, AND IN LINE WITH THE POLES.  A STANDARD DISK,
 HU0295'STAMPED D 61 1942 AND SET IN THE TOP OF A CONCRETE POST.  NOTE--
 HU0295'MARK IS 20 FEET EAST OF THE CENTER OF THE FARM ROAD.
 HU0295
 HU0295                          STATION RECOVERY (2006)
 HU0295
 HU0295'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU0295'DIRT ROAD IS RED HOUSE ROAD.(NOT DIRT, MACADAM) MARK IS 22 FEET E OF
 HU0295'CENTER OF FARM ROAD.4.5 FEET ENE FROM NEW POLE 839/16 CHOPTANK.32 FEET
 HU0295'FROM CENTER OF ROAD.  NO WITNESS POST.
 HU0295
 HU0295                          STATION RECOVERY (2019)
 HU0295
 HU0295'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HU0295'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0020 ***********************************************************************
 HV0020  DESIGNATION -  D 62
 HV0020  PID         -  HV0020
 HV0020  STATE/COUNTY-  MD/TALBOT
 HV0020  COUNTRY     -  US
 HV0020  USGS QUAD   -  TRAPPE (2016)
 HV0020
 HV0020                         *CURRENT SURVEY CONTROL
 HV0020  ______________________________________________________________________
 HV0020* NAD 83(1986) POSITION- 38 43 35.6    (N) 076 04 01.4    (W)   HD_HELD2
 HV0020* NAVD 88 ORTHO HEIGHT -    16.374 (meters)       53.72  (feet) ADJUSTED
 HV0020  ______________________________________________________________________
 HV0020  GEOID HEIGHT    -        -34.767 (meters)                     GEOID18
 HV0020  DYNAMIC HEIGHT  -         16.364 (meters)       53.69  (feet) COMP
 HV0020  MODELED GRAVITY -    980,031.3   (mgal)                       NAVD 88
 HV0020
 HV0020  VERT ORDER      -  FIRST     CLASS II
 HV0020
 HV0020.The horizontal coordinates were established by autonomous hand held GPS
 HV0020.observations and have an estimated accuracy of +/- 10 meters.
 HV0020
 HV0020.The orthometric height was determined by differential leveling and
 HV0020.adjusted by the NATIONAL GEODETIC SURVEY
 HV0020.in June 1991.
 HV0020
 HV0020.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0020.GEOID18 height accuracy estimate available here.
 HV0020
 HV0020.Click photographs - Photos may exist for this station.
 HV0020
 HV0020.The dynamic height is computed by dividing the NAVD 88
 HV0020.geopotential number by the normal gravity value computed on the
 HV0020.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0020.degrees latitude (g = 980.6199 gals.).
 HV0020
 HV0020.The modeled gravity was interpolated from observed gravity values.
 HV0020
 HV0020;                    North         East    Units  Estimated Accuracy
 HV0020;SPC MD       -   118,066.      481,123.      MT  (+/- 10 meters HH2 GPS)
 HV0020
 HV0020_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0724686973(NAD 83)
 HV0020
 HV0020                          SUPERSEDED SURVEY CONTROL
 HV0020
 HV0020  NGVD 29 (11/26/84)   16.611  (m)           54.50   (f) ADJUSTED    1 2
 HV0020
 HV0020.Superseded values are not recommended for survey control.
 HV0020
 HV0020.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0020.See file dsdata.pdf to determine how the superseded data were derived.
 HV0020
 HV0020_MARKER: DB = BENCH MARK DISK
 HV0020_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0020_STAMPING: D 62 1942
 HV0020_MARK LOGO: CGS
 HV0020_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0020_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0020+STABILITY: SURFACE MOTION
 HV0020_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0020+SATELLITE: SATELLITE OBSERVATIONS - August 13, 2003
 HV0020
 HV0020  HISTORY     - Date     Condition        Report By
 HV0020  HISTORY     - 1942     MONUMENTED       CGS
 HV0020  HISTORY     - 1971     GOOD             NGS
 HV0020  HISTORY     - 19991007 GOOD             MDSHA
 HV0020  HISTORY     - 20030813 GOOD             USPSQD
 HV0020
 HV0020                          STATION DESCRIPTION
 HV0020
 HV0020'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0020'3.2 MI S FROM EASTON.
 HV0020'ABOUT 3.25 MILES SOUTH ALONG U.S. HIGHWAY 50 FROM THE
 HV0020'INTERSECTION OF STATE HIGHWAY 331 AT EASTON, ABOUT 0.1 MILE SOUTH
 HV0020'OF THE JUNCTION OF STATE HIGHWAY 565, AT THE SOUTHWEST CORNER OF
 HV0020'A LAWN FOR A 1 1/2 STORY HOUSE, 94.6 FEET SOUTHWEST OF THE
 HV0020'SOUTHWEST CORNER OF THE HOUSE, 44 FEET EAST OF THE CENTER LINE
 HV0020'OF THE EAST LANES OF THE HIGHWAY, 16 FEET WEST OF A TWIN MAPLE
 HV0020'TREE, 12 1/2 FEET NORTHEAST OF CABLE LINE POLE NO. 13-117 M-1,
 HV0020'ABOUT LEVEL WITH THE HIGHWAY AND SET IN THE TOP OF A CONCRETE
 HV0020'POST FLUSH WITH THE GROUND.
 HV0020
 HV0020                          STATION RECOVERY (1999)
 HV0020
 HV0020'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HV0020'RECOVERED AS DESCRIBED.
 HV0020
 HV0020                          STATION RECOVERY (2003)
 HV0020
 HV0020'RECOVERY NOTE BY US POWER SQUADRON 2003 (WNF)
 HV0020'NEW CABLE LINE POLE HAS BEEN REPLACED.  NEW POLE NO. IS CHOPTANK C1,
 HV0020'342, 46, 33.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0253 ***********************************************************************
 HV0253  DESIGNATION -  D 63
 HV0253  PID         -  HV0253
 HV0253  STATE/COUNTY-  MD/DORCHESTER
 HV0253  COUNTRY     -  US
 HV0253  USGS QUAD   -  CHURCH CREEK (2016)
 HV0253
 HV0253                         *CURRENT SURVEY CONTROL
 HV0253  ______________________________________________________________________
 HV0253* NAD 83(1986) POSITION- 38 35 36.     (N) 076 11 59.     (W)   SCALED
 HV0253* NAVD 88 ORTHO HEIGHT -     0.914 (meters)        3.00  (feet) ADJUSTED
 HV0253  ______________________________________________________________________
 HV0253  GEOID HEIGHT    -        -34.738 (meters)                     GEOID18
 HV0253  DYNAMIC HEIGHT  -          0.913 (meters)        3.00  (feet) COMP
 HV0253  MODELED GRAVITY -    980,023.7   (mgal)                       NAVD 88
 HV0253
 HV0253  VERT ORDER      -  SECOND    CLASS 0
 HV0253
 HV0253.The horizontal coordinates were scaled from a map and have
 HV0253.an estimated accuracy of +/- 6 seconds.
 HV0253
 HV0253.The orthometric height was determined by differential leveling and
 HV0253.adjusted by the NATIONAL GEODETIC SURVEY
 HV0253.in June 1991.
 HV0253
 HV0253.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0253.GEOID18 height accuracy estimate available here.
 HV0253
 HV0253.Click photographs - Photos may exist for this station.
 HV0253
 HV0253.The dynamic height is computed by dividing the NAVD 88
 HV0253.geopotential number by the normal gravity value computed on the
 HV0253.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0253.degrees latitude (g = 980.6199 gals.).
 HV0253
 HV0253.The modeled gravity was interpolated from observed gravity values.
 HV0253
 HV0253;                    North         East    Units  Estimated Accuracy
 HV0253;SPC MD       -   103,170.      469,720.      MT  (+/- 180 meters Scaled)
 HV0253
 HV0253_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH955723(NAD 83)
 HV0253
 HV0253                          SUPERSEDED SURVEY CONTROL
 HV0253
 HV0253  NGVD 29 (02/24/95)    1.146  (m)            3.76   (f) ADJUSTED    2 0
 HV0253  NGVD 29 (11/26/84)    1.151  (m)            3.78   (f) SUPERSEDED  2 0
 HV0253
 HV0253.Superseded values are not recommended for survey control.
 HV0253
 HV0253.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0253.See file dsdata.pdf to determine how the superseded data were derived.
 HV0253
 HV0253_MARKER: DB = BENCH MARK DISK
 HV0253_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0253_SP_SET: CULVERT
 HV0253_STAMPING: D 63 1942
 HV0253_MARK LOGO: CGS
 HV0253_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0253
 HV0253  HISTORY     - Date     Condition        Report By
 HV0253  HISTORY     - 1942     MONUMENTED       CGS
 HV0253  HISTORY     - 1978     MARK NOT FOUND   USGS
 HV0253
 HV0253                          STATION DESCRIPTION
 HV0253
 HV0253'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0253'7.1 MI NW FROM CAMBRIDGE.
 HV0253'ALONG STATE HIGHWAY 343, AT ITS INTERSECTION WITH A DRIVEWAY
 HV0253'TO THE NORTH, SET IN THE EAST CONCRETE HEADWALL OF A CULVERT UNDER
 HV0253'THE DRIVEWAY, 20 FEET NORTH OF THE CENTER OF THE HIGHWAY, 12 EAST
 HV0253'OF THE CENTER OF THE DRIVEWAY, 2 FEET WEST OF THE EAST END OF
 HV0253'THE HEADWALL.  A STANDARD DISK.
 HV0253
 HV0253                          STATION RECOVERY (1978)
 HV0253
 HV0253'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1978
 HV0253'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0931 ***********************************************************************
 HU0931  DESIGNATION -  D 66
 HU0931  PID         -  HU0931
 HU0931  STATE/COUNTY-  MD/CAROLINE
 HU0931  COUNTRY     -  US
 HU0931  USGS QUAD   -  FEDERALSBURG (2016)
 HU0931
 HU0931                         *CURRENT SURVEY CONTROL
 HU0931  ______________________________________________________________________
 HU0931* NAD 83(1986) POSITION- 38 40 56.     (N) 075 47 41.     (W)   SCALED
 HU0931* NAVD 88 ORTHO HEIGHT -    10.741 (meters)       35.24  (feet) ADJUSTED
 HU0931  ______________________________________________________________________
 HU0931  GEOID HEIGHT    -        -35.308 (meters)                     GEOID18
 HU0931  DYNAMIC HEIGHT  -         10.734 (meters)       35.22  (feet) COMP
 HU0931  MODELED GRAVITY -    980,021.7   (mgal)                       NAVD 88
 HU0931
 HU0931  VERT ORDER      -  SECOND    CLASS 0
 HU0931
 HU0931.The horizontal coordinates were scaled from a map and have
 HU0931.an estimated accuracy of +/- 6 seconds.
 HU0931
 HU0931.The orthometric height was determined by differential leveling and
 HU0931.adjusted by the NATIONAL GEODETIC SURVEY
 HU0931.in June 1991.
 HU0931
 HU0931.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0931.GEOID18 height accuracy estimate available here.
 HU0931
 HU0931.Click photographs - Photos may exist for this station.
 HU0931
 HU0931.The dynamic height is computed by dividing the NAVD 88
 HU0931.geopotential number by the normal gravity value computed on the
 HU0931.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0931.degrees latitude (g = 980.6199 gals.).
 HU0931
 HU0931.The modeled gravity was interpolated from observed gravity values.
 HU0931
 HU0931;                    North         East    Units  Estimated Accuracy
 HU0931;SPC MD       -   113,420.      504,870.      MT  (+/- 180 meters Scaled)
 HU0931
 HU0931_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH308818(NAD 83)
 HU0931
 HU0931                          SUPERSEDED SURVEY CONTROL
 HU0931
 HU0931  NGVD 29 (11/26/84)   10.982  (m)           36.03   (f) ADJUSTED    2 0
 HU0931
 HU0931.Superseded values are not recommended for survey control.
 HU0931
 HU0931.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0931.See file dsdata.pdf to determine how the superseded data were derived.
 HU0931
 HU0931_MARKER: DB = BENCH MARK DISK
 HU0931_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0931_SP_SET: CULVERT
 HU0931_STAMPING: D 66 1942
 HU0931_MARK LOGO: CGS
 HU0931_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0931_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0931+SATELLITE: SATELLITE OBSERVATIONS - February 11, 2003
 HU0931
 HU0931  HISTORY     - Date     Condition        Report By
 HU0931  HISTORY     - 1942     MONUMENTED       CGS
 HU0931  HISTORY     - 1965     GOOD             CGS
 HU0931  HISTORY     - 1982     MARK NOT FOUND   USGS
 HU0931  HISTORY     - 20030211 MARK NOT FOUND   MDSHA
 HU0931
 HU0931                          STATION DESCRIPTION
 HU0931
 HU0931'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0931'1.4 MI W FROM FEDERALSBURG.
 HU0931'1.4 MILE WEST ALONG THE RAILROAD FROM THE STATION AT FEDERALSBURG,
 HU0931'CAROLINE COUNTY, 36.9 FEET NORTH OF THE CENTERLINE OF THE TRACK,
 HU0931'17.0 FEET WEST OF THE CENTER OF A PRIVATE ROAD, 10.0 FEET
 HU0931'SOUTHWEST OF A 28-INCH MAPLE TREE, ABOUT 4.0 FEET LOWER THAN THE
 HU0931'TRACK, SET IN THE SOUTHWEST END OF A CONCRETE CULVERT, SET IN
 HU0931'A DRILLED HOLE.
 HU0931
 HU0931                          STATION RECOVERY (1965)
 HU0931
 HU0931'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0931'RECOVERED IN GOOD CONDITION.
 HU0931
 HU0931                          STATION RECOVERY (1982)
 HU0931
 HU0931'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1982
 HU0931'MARK NOT FOUND.
 HU0931
 HU0931                          STATION RECOVERY (2003)
 HU0931
 HU0931'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2003 (SFK)
 HU0931'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE CONCRETE CULVERT
 HU0931'APPEARS TO HAVE BEEN REPLACED BY A LARGE METAL PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0888 ***********************************************************************
 HU0888  DESIGNATION -  D 67
 HU0888  PID         -  HU0888
 HU0888  STATE/COUNTY-  MD/CAROLINE
 HU0888  COUNTRY     -  US
 HU0888  USGS QUAD   -  HOBBS (2017)
 HU0888
 HU0888                         *CURRENT SURVEY CONTROL
 HU0888  ______________________________________________________________________
 HU0888* NAD 83(1986) POSITION- 38 52 21.     (N) 075 49 35.     (W)   SCALED
 HU0888* NAVD 88 ORTHO HEIGHT -    12.413 (meters)       40.73  (feet) ADJUSTED
 HU0888  ______________________________________________________________________
 HU0888  GEOID HEIGHT    -        -34.886 (meters)                     GEOID18
 HU0888  DYNAMIC HEIGHT  -         12.406 (meters)       40.70  (feet) COMP
 HU0888  MODELED GRAVITY -    980,039.4   (mgal)                       NAVD 88
 HU0888
 HU0888  VERT ORDER      -  SECOND    CLASS 0
 HU0888
 HU0888.The horizontal coordinates were scaled from a map and have
 HU0888.an estimated accuracy of +/- 6 seconds.
 HU0888
 HU0888.The orthometric height was determined by differential leveling and
 HU0888.adjusted by the NATIONAL GEODETIC SURVEY
 HU0888.in June 1991.
 HU0888
 HU0888.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0888.GEOID18 height accuracy estimate available here.
 HU0888
 HU0888.Click photographs - Photos may exist for this station.
 HU0888
 HU0888.The dynamic height is computed by dividing the NAVD 88
 HU0888.geopotential number by the normal gravity value computed on the
 HU0888.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0888.degrees latitude (g = 980.6199 gals.).
 HU0888
 HU0888.The modeled gravity was interpolated from observed gravity values.
 HU0888
 HU0888;                    North         East    Units  Estimated Accuracy
 HU0888;SPC MD       -   134,510.      501,840.      MT  (+/- 180 meters Scaled)
 HU0888
 HU0888_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ283029(NAD 83)
 HU0888
 HU0888                          SUPERSEDED SURVEY CONTROL
 HU0888
 HU0888  NGVD 29 (11/26/84)   12.652  (m)           41.51   (f) ADJUSTED    2 0
 HU0888
 HU0888.Superseded values are not recommended for survey control.
 HU0888
 HU0888.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0888.See file dsdata.pdf to determine how the superseded data were derived.
 HU0888
 HU0888_MARKER: DB = BENCH MARK DISK
 HU0888_SETTING: 0 = UNSPECIFIED SETTING
 HU0888_STAMPING: D 67 1942
 HU0888_MARK LOGO: CGS
 HU0888_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0888
 HU0888  HISTORY     - Date     Condition        Report By
 HU0888  HISTORY     - 1942     MONUMENTED       CGS
 HU0888  HISTORY     - 1965     MARK NOT FOUND   CGS
 HU0888
 HU0888                          STATION DESCRIPTION
 HU0888
 HU0888'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0888'0.6 MI S FROM DENTON.
 HU0888'0.65 MILE SOUTH ALONG HIGHWAY 313 FROM THE WYE JUNCTION OF HIGHWAY
 HU0888'313 AND HIGHWAY 404 AT DENTON, CAROLINE COUNTY, 21.0 FEET WEST OF
 HU0888'THE CENTER LINE OF THE HIGHWAY 313, 2.6 FEET SOUTH OF THE
 HU0888'SOUTHEAST CORNER OF A WIRE FENCE, 92.3 FEET NORTHWEST AND ACROSS
 HU0888'THE HIGHWAY FROM A 20-INCH CEDAR TREE, NEAR A STANDARD REFERENCE
 HU0888'POST.
 HU0888
 HU0888                          STATION RECOVERY (1965)
 HU0888
 HU0888'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0888'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0820 ***********************************************************************
 HU0820  DESIGNATION -  D 68
 HU0820  PID         -  HU0820
 HU0820  STATE/COUNTY-  MD/CAROLINE
 HU0820  COUNTRY     -  US
 HU0820  USGS QUAD   -  RIDGELY (2017)
 HU0820
 HU0820                         *CURRENT SURVEY CONTROL
 HU0820  ______________________________________________________________________
 HU0820* NAD 83(1986) POSITION- 38 56 06.2    (N) 075 53 40.5    (W)   HD_HELD2
 HU0820* NAVD 88 ORTHO HEIGHT -    17.363 (meters)       56.97  (feet) ADJUSTED
 HU0820  ______________________________________________________________________
 HU0820  GEOID HEIGHT    -        -34.586 (meters)                     GEOID18
 HU0820  DYNAMIC HEIGHT  -         17.353 (meters)       56.93  (feet) COMP
 HU0820  MODELED GRAVITY -    980,051.6   (mgal)                       NAVD 88
 HU0820
 HU0820  VERT ORDER      -  SECOND    CLASS I
 HU0820
 HU0820.The horizontal coordinates were established by autonomous hand held GPS
 HU0820.observations and have an estimated accuracy of +/- 10 meters.
 HU0820
 HU0820.The orthometric height was determined by differential leveling and
 HU0820.adjusted by the NATIONAL GEODETIC SURVEY
 HU0820.in December 2004.
 HU0820
 HU0820.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0820.GEOID18 height accuracy estimate available here.
 HU0820
 HU0820.Click photographs - Photos may exist for this station.
 HU0820
 HU0820.The dynamic height is computed by dividing the NAVD 88
 HU0820.geopotential number by the normal gravity value computed on the
 HU0820.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0820.degrees latitude (g = 980.6199 gals.).
 HU0820
 HU0820.The modeled gravity was interpolated from observed gravity values.
 HU0820
 HU0820;                    North         East    Units  Estimated Accuracy
 HU0820;SPC MD       -   141,377.      495,839.      MT  (+/- 10 meters HH2 GPS)
 HU0820
 HU0820_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2246509950(NAD 83)
 HU0820
 HU0820                          SUPERSEDED SURVEY CONTROL
 HU0820
 HU0820  NAVD 88 (06/15/91)   17.379  (m)           57.02   (f) SUPERSEDED  2 0
 HU0820  NGVD 29 (11/26/84)   17.615  (m)           57.79   (f) ADJUSTED    2 0
 HU0820
 HU0820.Superseded values are not recommended for survey control.
 HU0820
 HU0820.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0820.See file dsdata.pdf to determine how the superseded data were derived.
 HU0820
 HU0820_MARKER: DB = BENCH MARK DISK
 HU0820_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0820_STAMPING: D 68 1942
 HU0820_MARK LOGO: CGS
 HU0820_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0820_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0820+STABILITY: SURFACE MOTION
 HU0820_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0820+SATELLITE: SATELLITE OBSERVATIONS - October 10, 2002
 HU0820
 HU0820  HISTORY     - Date     Condition        Report By
 HU0820  HISTORY     - 1942     MONUMENTED       CGS
 HU0820  HISTORY     - 20020927 GOOD             INDIV
 HU0820  HISTORY     - 20021010 GOOD             MDSHA
 HU0820  HISTORY     - 20050319 POOR             USPSQD
 HU0820
 HU0820                          STATION DESCRIPTION
 HU0820
 HU0820'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0820'1 MI N FROM DOWNES.
 HU0820'1.0 MILE NORTH ALONG STATE HIGHWAY 312 FROM THE PENNSYLVANIA
 HU0820'RAILROAD CROSSING AT DOWNES, CAROLINE COUNTY, AT THE Y-JUNCTION
 HU0820'OF A DIRT ROAD, 35 FEET NORTHWEST OF THE CENTERLINE OF THE
 HU0820'HIGHWAY, 34.4 FEET SOUTHEAST OF THE CENTERLINE OF THE DIRT ROAD,
 HU0820'AND IN THE NORTHEAST CORNER OF A YARD.  A STANDARD DISK, STAMPED
 HU0820'D 68 1942 AND SET IN THE TOP OF A CONCRETE POST.
 HU0820
 HU0820                          STATION RECOVERY (2002)
 HU0820
 HU0820'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (RRC)
 HU0820'RECOVERED IN GOOD CONDITION.
 HU0820
 HU0820                          STATION RECOVERY (2002)
 HU0820
 HU0820'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0820'THE STATION IS LOCATED ABOUT 1.0 MI (1.61 KM) SOUTHWEST OF RIDGELY. TO
 HU0820'REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 480 AND STATE
 HU0820'HIGHWAY 312 NORTH, IN RIDGELY, GO SOUTHWEST ALONG STATE HIGHWAY 480
 HU0820'FOR 0.9 MI (1.45 KM) TO STATE HIGHWAY 312 SOUTH AND THE STATION ON THE
 HU0820'LEFT.  THE STATION IS A COAST AND GEODETIC BENCH MARK DISK SET IN THE
 HU0820'TOP OF A CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS 69.5
 HU0820'FT (21.2 M) SOUTH OF THE CENTER LINE OF STATE HIGHWAY 480, 31.0 FT
 HU0820'(9.4 M) WEST OF THE CENTER LINE OF STATE HIGHWAY 312, 12.5 FT (3.8 M)
 HU0820'EAST OF A 28 INCH (71 CM) MAPLE TREE, AND 56.0 FT (17.1 M) SOUTHWEST
 HU0820'OF THE SOUTH END OF A CONCRETE CURB FOR A TRIANGLE SHAPED GRASS AREA.
 HU0820
 HU0820                          STATION RECOVERY (2005)
 HU0820
 HU0820'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HU0820'CONCRETE MONUMENT CHIPPED AND BROKEN. DISH HEAVILY SCARRED BY MOWING
 HU0820'EQUIPMENT AND STAMPING IS ALMOST ILLEGABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0954 ***********************************************************************
 HU0954  DESIGNATION -  D 7
 HU0954  PID         -  HU0954
 HU0954  STATE/COUNTY-  MD/DORCHESTER
 HU0954  COUNTRY     -  US
 HU0954  USGS QUAD   -  FEDERALSBURG (2016)
 HU0954
 HU0954                         *CURRENT SURVEY CONTROL
 HU0954  ______________________________________________________________________
 HU0954* NAD 83(1986) POSITION- 38 38 09.4    (N) 075 51 41.6    (W)   HD_HELD2
 HU0954* NAVD 88 ORTHO HEIGHT -    13.512 (meters)       44.33  (feet) ADJUSTED
 HU0954  ______________________________________________________________________
 HU0954  GEOID HEIGHT    -        -35.265 (meters)                     GEOID18
 HU0954  DYNAMIC HEIGHT  -         13.503 (meters)       44.30  (feet) COMP
 HU0954  MODELED GRAVITY -    980,020.3   (mgal)                       NAVD 88
 HU0954
 HU0954  VERT ORDER      -  SECOND    CLASS 0
 HU0954
 HU0954.The horizontal coordinates were established by autonomous hand held GPS
 HU0954.observations and have an estimated accuracy of +/- 10 meters.
 HU0954
 HU0954.The orthometric height was determined by differential leveling and
 HU0954.adjusted by the NATIONAL GEODETIC SURVEY
 HU0954.in June 1991.
 HU0954
 HU0954.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0954.GEOID18 height accuracy estimate available here.
 HU0954
 HU0954.Click photographs - Photos may exist for this station.
 HU0954
 HU0954.The dynamic height is computed by dividing the NAVD 88
 HU0954.geopotential number by the normal gravity value computed on the
 HU0954.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0954.degrees latitude (g = 980.6199 gals.).
 HU0954
 HU0954.The modeled gravity was interpolated from observed gravity values.
 HU0954
 HU0954;                    North         East    Units  Estimated Accuracy
 HU0954;SPC MD       -   108,212.      499,116.      MT  (+/- 10 meters HH2 GPS)
 HU0954
 HU0954_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2501476730(NAD 83)
 HU0954
 HU0954                          SUPERSEDED SURVEY CONTROL
 HU0954
 HU0954  NGVD 29 (11/26/84)   13.753  (m)           45.12   (f) ADJUSTED    2 0
 HU0954
 HU0954.Superseded values are not recommended for survey control.
 HU0954
 HU0954.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0954.See file dsdata.pdf to determine how the superseded data were derived.
 HU0954
 HU0954_MARKER: DB = BENCH MARK DISK
 HU0954_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0954_STAMPING: D 7 1935
 HU0954_MARK LOGO: CGS
 HU0954_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0954_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0954+STABILITY: SURFACE MOTION
 HU0954_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0954+SATELLITE: SATELLITE OBSERVATIONS - October 07, 2006
 HU0954
 HU0954  HISTORY     - Date     Condition        Report By
 HU0954  HISTORY     - 1935     MONUMENTED       CGS
 HU0954  HISTORY     - 1964     GOOD             CGS
 HU0954  HISTORY     - 1983     GOOD             MDDT
 HU0954  HISTORY     - 19901230 GOOD             NGS
 HU0954  HISTORY     - 19990521 GOOD             GEOMET
 HU0954  HISTORY     - 20000918 GOOD             GEOMET
 HU0954  HISTORY     - 20061007 GOOD             USPSQD
 HU0954
 HU0954                          STATION DESCRIPTION
 HU0954
 HU0954'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 HU0954'AT HURLOCK.
 HU0954'AT HURLOCK, DORCHESTER COUNTY, 92.1 FEET NORTHWEST OF THE
 HU0954'NORTHWEST CORNER OF THE PENNSYLVANIA RAILROAD STATION, ON THE
 HU0954'LAWN OF THE HURLOCK BAKERY, 48.5 FEET SOUTH OF THE NORTHEAST
 HU0954'CORNER OF THE NORTHEAST WING, 10 FEET SOUTHEAST OF THE SOUTHEAST
 HU0954'CORNER OF THE NORTHEAST WING, 48.8 FEET WEST OF THE WEST RAIL OF
 HU0954'THE MAIN TRACK, 4.3 FEET NORTHEAST OF TELEPHONE POLE 35 B, AND
 HU0954'ABOUT 6 INCHES UNDER GROUND.  A STANDARD DISK, STAMPED D 7 1935
 HU0954'AND SET IN THE TOP OF A CONCRETE POST.
 HU0954
 HU0954                          STATION RECOVERY (1983)
 HU0954
 HU0954'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1983
 HU0954'IT IS 6.1 FEET NORTHEAST OF TELEPHONE POLE 35 B AND 78.2 FEET
 HU0954'SOUTHEAST OF THE CENTERLINE OF MD. RT. 307.
 HU0954
 HU0954                          STATION RECOVERY (1990)
 HU0954
 HU0954'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0954'RECOVERED IN GOOD CONDITION.
 HU0954
 HU0954                          STATION RECOVERY (1999)
 HU0954
 HU0954'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BB)
 HU0954'RECOVERED AS DESCRIBED.
 HU0954
 HU0954                          STATION RECOVERY (2000)
 HU0954
 HU0954'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HU0954'RECOVERED IN GOOD CONDITION.
 HU0954
 HU0954                          STATION RECOVERY (2006)
 HU0954
 HU0954'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU0954'THERE IS NO LONGER A RAILROAD STATION AT THIS LOCATION.  ON THE CORNER
 HU0954'OF COMMERCE AND RAILROAD STREETS, BESIDE A WHITE BLOCK BUILDING, THAT
 HU0954'IS NO LONGER A BAKERY, 6.1 FEET NE OF POWER POLE 35B, ALSO NUMBERED
 HU0954'39431 AND 03053 DP AND L, MARK IS 6 INCHES BELOW SURFACE.  THERE IS A
 HU0954'WITNESS POST 1 FOOT OFF THE GROUND.  THE MARK IS ALSO 57.5 FEET SOUTH
 HU0954'FROM NEW POLE NUMBERED 39429 AND 03058.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6511 ***********************************************************************
 JV6511  DESIGNATION -  D 70 RESET
 JV6511  PID         -  JV6511
 JV6511  STATE/COUNTY-  MD/KENT
 JV6511  COUNTRY     -  US
 JV6511  USGS QUAD   -  LANGFORD CREEK (2016)
 JV6511
 JV6511                         *CURRENT SURVEY CONTROL
 JV6511  ______________________________________________________________________
 JV6511* NAD 83(1986) POSITION- 39 06 31.8    (N) 076 13 56.7    (W)   HD_HELD2
 JV6511* NAVD 88 ORTHO HEIGHT -     3.467 (meters)       11.37  (feet) ADJUSTED
 JV6511  ______________________________________________________________________
 JV6511  GEOID HEIGHT    -        -33.420 (meters)                     GEOID18
 JV6511  DYNAMIC HEIGHT  -          3.465 (meters)       11.37  (feet) COMP
 JV6511  MODELED GRAVITY -    980,101.6   (mgal)                       NAVD 88
 JV6511
 JV6511  VERT ORDER      -  SECOND    CLASS I
 JV6511
 JV6511.The horizontal coordinates were established by autonomous hand held GPS
 JV6511.observations and have an estimated accuracy of +/- 10 meters.
 JV6511
 JV6511.The orthometric height was determined by differential leveling and
 JV6511.adjusted by the NATIONAL GEODETIC SURVEY
 JV6511.in December 2003.
 JV6511
 JV6511.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6511.GEOID18 height accuracy estimate available here.
 JV6511
 JV6511.Click photographs - Photos may exist for this station.
 JV6511
 JV6511.The dynamic height is computed by dividing the NAVD 88
 JV6511.geopotential number by the normal gravity value computed on the
 JV6511.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6511.degrees latitude (g = 980.6199 gals.).
 JV6511
 JV6511.The modeled gravity was interpolated from observed gravity values.
 JV6511
 JV6511;                    North         East    Units  Estimated Accuracy
 JV6511;SPC MD       -   160,367.      466,387.      MT  (+/- 10 meters HH2 GPS)
 JV6511
 JV6511_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9344429576(NAD 83)
 JV6511
 JV6511                          SUPERSEDED SURVEY CONTROL
 JV6511
 JV6511  NAVD 88 (11/18/05)    3.474  (m)           11.40   (f) SUPERSEDED  3 0
 JV6511  NGVD 29 (11/18/05)    3.72   (m)           12.2    (f) RESET       3  
 JV6511
 JV6511.Superseded values are not recommended for survey control.
 JV6511
 JV6511.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6511.See file dsdata.pdf to determine how the superseded data were derived.
 JV6511
 JV6511_MARKER: DV = VERTICAL CONTROL DISK
 JV6511_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV6511_SP_SET: BRICK PILLAR
 JV6511_STAMPING: D 70 RESET 1989
 JV6511_MARK LOGO: NGS
 JV6511_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6511_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6511+STABILITY: SURFACE MOTION
 JV6511_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6511+SATELLITE: SATELLITE OBSERVATIONS - April 14, 2025
 JV6511
 JV6511  HISTORY     - Date     Condition        Report By
 JV6511  HISTORY     - 1989     MONUMENTED       NGS
 JV6511  HISTORY     - 19960824 GOOD             USPSQD
 JV6511  HISTORY     - 20010308 GOOD             MDSHA
 JV6511  HISTORY     - 20080630 POOR             INDIV
 JV6511  HISTORY     - 20140109 GOOD             ARCSHE
 JV6511  HISTORY     - 20191009 GOOD             MDSHA
 JV6511  HISTORY     - 20250414 GOOD             PROFLN
 JV6511
 JV6511                          STATION DESCRIPTION
 JV6511
 JV6511'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6511'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 20 (ROCK HALL AVENUE)
 JV6511'AND 445 (MAIN STREET) IN ROCK HALL, GO SOUTH ON STATE HIGHWAY 445
 JV6511'(MAIN STREET) FOR 3.55 KM (2.20 MI) TO TWO BRICK PILLARS ON THE RIGHT
 JV6511'AT THE ENTRANCE TO HUNTINGFIELD ESTATES AND THE BENCH MARK IN THE EAST
 JV6511'FACE OF THE MOST NORTHEAST PILLARS.  THE DISK IS SET VERTICALLY IN A
 JV6511'DRILL HOLE BETWEEN THE BRICKS AND ABOUT 0.3 M (1.0 FT) ABOVE THE
 JV6511'SURFACE OF THE GROUND AND DIRECTLY BELOW A WHITE MARBLE SLAB INSCRIBED
 JV6511'HUNTINGFIELD .  IT IS 16.7 M (54.8 FT) NORTHEAST OF A POWERLINE POLE
 JV6511'NUMBERED 1 29068 20389, 8.02 M (26.3 FT) NORTH OF A POWERLINE POLE
 JV6511'NUMBERED 39 60 29073, 10.27 M (33.7 FT) WEST-NORTHWEST OF THE CENTER
 JV6511'OF STATE HIGHWAY 445 AND 2.80 M (9.2 FT) NORTH-NORTHEAST OF THE CENTER
 JV6511'OF A PRIVATE DRIVE LEADING NORTHWEST BETWEEN THE TWO PILLARS TO THE
 JV6511'ENTRANCE TO THE HUNTINGFIELD ESTATE.
 JV6511
 JV6511                          STATION RECOVERY (1996)
 JV6511
 JV6511'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV6511'RECOVERED IN GOOD CONDITION.
 JV6511
 JV6511                          STATION RECOVERY (2001)
 JV6511
 JV6511'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV6511'RECOVERED AS DESCRIBED.
 JV6511
 JV6511                          STATION RECOVERY (2008)
 JV6511
 JV6511'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2008
 JV6511'ON JUNE 2008, A FERTILIZER APPLICATOR REPORTED HITTING THE BRICK
 JV6511'PILLAR AND KNOCKING IT OVER. PILLAR WAS RE-ERECTED - USE WITH CAUTION
 JV6511
 JV6511                          STATION RECOVERY (2014)
 JV6511
 JV6511'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV6511'RECOVERED IN GOOD CONDITION.
 JV6511
 JV6511                          STATION RECOVERY (2019)
 JV6511
 JV6511'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (WAC)
 JV6511'RECOVERED IN GOOD CONDITION.
 JV6511
 JV6511                          STATION RECOVERY (2025)
 JV6511
 JV6511'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV6511'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0273 ***********************************************************************
 JV0273  DESIGNATION -  D 71
 JV0273  PID         -  JV0273
 JV0273  STATE/COUNTY-  MD/KENT
 JV0273  COUNTRY     -  US
 JV0273  USGS QUAD   -  CHESTERTOWN (2017)
 JV0273
 JV0273                         *CURRENT SURVEY CONTROL
 JV0273  ______________________________________________________________________
 JV0273* NAD 83(1986) POSITION- 39 14 51.     (N) 076 04 19.     (W)   SCALED
 JV0273* NAVD 88 ORTHO HEIGHT -    19.587 (meters)       64.26  (feet) ADJUSTED
 JV0273  ______________________________________________________________________
 JV0273  GEOID HEIGHT    -        -33.390 (meters)                     GEOID18
 JV0273  DYNAMIC HEIGHT  -         19.577 (meters)       64.23  (feet) COMP
 JV0273  MODELED GRAVITY -    980,110.1   (mgal)                       NAVD 88
 JV0273
 JV0273  VERT ORDER      -  SECOND    CLASS 0
 JV0273
 JV0273.The horizontal coordinates were scaled from a map and have
 JV0273.an estimated accuracy of +/- 6 seconds.
 JV0273
 JV0273.The orthometric height was determined by differential leveling and
 JV0273.adjusted by the NATIONAL GEODETIC SURVEY
 JV0273.in June 1991.
 JV0273
 JV0273.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0273.GEOID18 height accuracy estimate available here.
 JV0273
 JV0273.Click photographs - Photos may exist for this station.
 JV0273
 JV0273.The dynamic height is computed by dividing the NAVD 88
 JV0273.geopotential number by the normal gravity value computed on the
 JV0273.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0273.degrees latitude (g = 980.6199 gals.).
 JV0273
 JV0273.The modeled gravity was interpolated from observed gravity values.
 JV0273
 JV0273;                    North         East    Units  Estimated Accuracy
 JV0273;SPC MD       -   175,890.      480,110.      MT  (+/- 180 meters Scaled)
 JV0273
 JV0273_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ075447(NAD 83)
 JV0273
 JV0273                          SUPERSEDED SURVEY CONTROL
 JV0273
 JV0273  NGVD 29 (11/26/84)   19.821  (m)           65.03   (f) ADJUSTED    2 0
 JV0273
 JV0273.Superseded values are not recommended for survey control.
 JV0273
 JV0273.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0273.See file dsdata.pdf to determine how the superseded data were derived.
 JV0273
 JV0273_MARKER: DB = BENCH MARK DISK
 JV0273_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0273_STAMPING: D 71 1942
 JV0273_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0273+STABILITY: SURFACE MOTION
 JV0273
 JV0273  HISTORY     - Date     Condition        Report By
 JV0273  HISTORY     - 1942     MONUMENTED       CGS
 JV0273  HISTORY     - 1948     GOOD             CGS
 JV0273  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0273  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JV0273  HISTORY     - 20031021 MARK NOT FOUND   USPSQD
 JV0273
 JV0273                          STATION DESCRIPTION
 JV0273
 JV0273'DESCRIBED BY COAST AND GEODETIC SURVEY 1948
 JV0273'3.1 MI N FROM WORTON.
 JV0273'3.1 MILES NORTH ALONG U.S. HIGHWAY 213 FROM THE NORTH END OF THE
 JV0273'BRIDGE OVER CHESTER RIVER AT CHESTERTOWN, KENT COUNTY, 2.2
 JV0273'MILES SOUTHEAST OF THE UNION METHODIST CHURCH AT WORTON, AT
 JV0273'THE MIDDLE OF A SOUTHEAST TO SOUTH SOUTHEAST CURVE, AT THE SOUTH
 JV0273'CORNER OF A CULTIVATED FIELD, 65.8 FEET NORTHEAST OF THE
 JV0273'CENTERLINE OF THE HIGHWAY, AND 5.7 FEET NORTH OF A POLE.  A
 JV0273'STANDARD DISK, STAMPED D 71 1942 AND SET IN THE TOP OF A
 JV0273'CONCRETE POST PROJECTING 6 INCHES ABOVE GROUND.
 JV0273
 JV0273                          STATION RECOVERY (1971)
 JV0273
 JV0273'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0273'MARK NOT FOUND.
 JV0273
 JV0273                          STATION RECOVERY (1990)
 JV0273
 JV0273'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0273'MARK NOT FOUND.
 JV0273
 JV0273                          STATION RECOVERY (2003)
 JV0273
 JV0273'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 JV0273'REFERENCED POLE DOES NOT EXIST.  FIELD CORNER DOES NOT EXIST, ENTIRE
 JV0273'FIELD IS NOW CULTIVATED AND THE FARM ROAD OBLITERATED.  A LINE OF
 JV0273'CONCRETE PIECES BROKEN BY FARM MACHINERY WAS FOUND APPROXIMATELY 66
 JV0273'FEET NE OF THE CENTER LINE OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1709 ***********************************************************************
 JV1709  DESIGNATION -  D 74
 JV1709  PID         -  JV1709
 JV1709  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1709  COUNTRY     -  US
 JV1709  USGS QUAD   -  GIBSON ISLAND (2017)
 JV1709
 JV1709                         *CURRENT SURVEY CONTROL
 JV1709  ______________________________________________________________________
 JV1709* NAD 83(1986) POSITION- 39 06 35.     (N) 076 27 16.     (W)   SCALED
 JV1709* NAVD 88 ORTHO HEIGHT -     8.156 (meters)       26.76  (feet) ADJUSTED
 JV1709  ______________________________________________________________________
 JV1709  GEOID HEIGHT    -        -33.195 (meters)                     GEOID18
 JV1709  DYNAMIC HEIGHT  -          8.151 (meters)       26.74  (feet) COMP
 JV1709  MODELED GRAVITY -    980,087.6   (mgal)                       NAVD 88
 JV1709
 JV1709  VERT ORDER      -  SECOND    CLASS 0
 JV1709
 JV1709.The horizontal coordinates were scaled from a map and have
 JV1709.an estimated accuracy of +/- 6 seconds.
 JV1709
 JV1709.The orthometric height was determined by differential leveling and
 JV1709.adjusted by the NATIONAL GEODETIC SURVEY
 JV1709.in June 1991.
 JV1709
 JV1709.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1709.GEOID18 height accuracy estimate available here.
 JV1709
 JV1709.Click photographs - Photos may exist for this station.
 JV1709
 JV1709.The dynamic height is computed by dividing the NAVD 88
 JV1709.geopotential number by the normal gravity value computed on the
 JV1709.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1709.degrees latitude (g = 980.6199 gals.).
 JV1709
 JV1709.The modeled gravity was interpolated from observed gravity values.
 JV1709
 JV1709;                    North         East    Units  Estimated Accuracy
 JV1709;SPC MD       -   160,330.      447,180.      MT  (+/- 180 meters Scaled)
 JV1709
 JV1709_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ742299(NAD 83)
 JV1709
 JV1709                          SUPERSEDED SURVEY CONTROL
 JV1709
 JV1709  NGVD 29 (11/26/84)    8.401  (m)           27.56   (f) ADJUSTED    2 0
 JV1709
 JV1709.Superseded values are not recommended for survey control.
 JV1709
 JV1709.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1709.See file dsdata.pdf to determine how the superseded data were derived.
 JV1709
 JV1709_MARKER: DB = BENCH MARK DISK
 JV1709_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1709_STAMPING: D 74 1942
 JV1709_MARK LOGO: CGS
 JV1709_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1709+STABILITY: SURFACE MOTION
 JV1709
 JV1709  HISTORY     - Date     Condition        Report By
 JV1709  HISTORY     - 1942     MONUMENTED       CGS
 JV1709  HISTORY     - 20171014 POOR             GPI
 JV1709
 JV1709                          STATION DESCRIPTION
 JV1709
 JV1709'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1709'4.5 MI SE FROM JACOBSVILLE.
 JV1709'ALONG HIGHWAY 177 ABOUT 4.5 MILES SOUTHEAST OF THE SCHOOL AT
 JV1709'JACOBSVILLE, AT A T ROAD JUNCTION OF THE HIGHWAY AND A DIRT ROAD
 JV1709'RUNNING NORTHEAST, ACROSS THE HIGHWAY FROM THE ENTRANCE TO MIL-BUR
 JV1709'CAMP, IN THE EAST ANGLE OF THE JUNCTION, 24.5 FEET NORTHEAST OF
 JV1709'THE CENTER LINE OF THE HIGHWAY, 54.0 FEET SOUTHEAST OF THE
 JV1709'CENTER LINE OF A DIRT ROAD, 3 FEET NORTH OF A GUY POLE, AND IS
 JV1709'A BENCH MARK DISK SET IN THE TOP OF A CONCRETE POST PROJECTING
 JV1709'4 INCHES.  STAMPED D 74 1942.
 JV1709
 JV1709                          STATION RECOVERY (2017)
 JV1709
 JV1709'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2017 (LJB)
 JV1709'THE MARK FOUND, BUT THE CONCRETE MONUMENT HAS BEEN KNOCKED ASKEW.  IT
 JV1709'IS IN THE NORTHEAST QUADRANT OF THE INTERSECTION OF MOUNTAIN ROAD AND
 JV1709'MD ROUTE 177.  THE MARK IS 5.1 FEET NORTH OF THE FACE OF CURB, 6.1
 JV1709'FEET SOUTH OF AN ELECTRIC BOX, 8.0 FEET EAST-NORTHEAST OF THE
 JV1709'NORTHEAST CORNER OF AN INLET, AND 15.2 FEET WEST-NORTHWEST OF ELECTRIC
 JV1709'POLE NO. 380632.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0125 ***********************************************************************
 HV0125  DESIGNATION -  D 75
 HV0125  PID         -  HV0125
 HV0125  STATE/COUNTY-  MD/QUEEN ANNES
 HV0125  COUNTRY     -  US
 HV0125  USGS QUAD   -  WYE MILLS (2016)
 HV0125
 HV0125                         *CURRENT SURVEY CONTROL
 HV0125  ______________________________________________________________________
 HV0125* NAD 83(1986) POSITION- 38 57 47.     (N) 076 06 07.     (W)   SCALED
 HV0125* NAVD 88 ORTHO HEIGHT -    16.686 (meters)       54.74  (feet) POSTED
 HV0125  ______________________________________________________________________
 HV0125  GEOID HEIGHT    -        -34.070 (meters)                     GEOID18
 HV0125  DYNAMIC HEIGHT  -         16.68  (meters)       54.7   (feet) COMP
 HV0125  MODELED GRAVITY -    980,071.1   (mgal)                       NAVD 88
 HV0125
 HV0125  VERT ORDER      -  * POSTED, SEE BELOW
 HV0125
 HV0125.The horizontal coordinates were scaled from a map and have
 HV0125.an estimated accuracy of +/- 6 seconds.
 HV0125
 HV0125.The orthometric height was determined by differential leveling
 HV0125.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0125
 HV0125.* This is a POSTED BENCH MARK height.
 HV0125
 HV0125.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0125.GEOID18 height accuracy estimate available here.
 HV0125
 HV0125.Click photographs - Photos may exist for this station.
 HV0125
 HV0125.The dynamic height is computed by dividing the NAVD 88
 HV0125.geopotential number by the normal gravity value computed on the
 HV0125.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0125.degrees latitude (g = 980.6199 gals.).
 HV0125
 HV0125.The modeled gravity was interpolated from observed gravity values.
 HV0125
 HV0125;                    North         East    Units  Estimated Accuracy
 HV0125;SPC MD       -   144,290.      477,830.      MT  (+/- 180 meters Scaled)
 HV0125
 HV0125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ045132(NAD 83)
 HV0125
 HV0125                          SUPERSEDED SURVEY CONTROL
 HV0125
 HV0125  NGVD 29 (11/26/84)   16.900  (m)           55.45   (f) ADJUSTED    2 0
 HV0125
 HV0125.Superseded values are not recommended for survey control.
 HV0125
 HV0125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0125.See file dsdata.pdf to determine how the superseded data were derived.
 HV0125
 HV0125_MARKER: DB = BENCH MARK DISK
 HV0125_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0125_STAMPING: D 75 1942
 HV0125_MARK LOGO: CGS
 HV0125_PROJECTION: PROJECTING 13 CENTIMETERS
 HV0125_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0125+STABILITY: SURFACE MOTION
 HV0125
 HV0125  HISTORY     - Date     Condition        Report By
 HV0125  HISTORY     - 1942     MONUMENTED       CGS
 HV0125  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0125  HISTORY     - 20010324 MARK NOT FOUND   USPSQD
 HV0125
 HV0125                          STATION DESCRIPTION
 HV0125
 HV0125'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0125'2 MI NW FROM WYE MILLS.
 HV0125'THIS MARK IS ABOUT 2.0 MILES NORTHWEST FROM THE POST OFFICE AT
 HV0125'WYE MILLS, QUEEN ANNES COUNTY, AT A T JUNCTION OF A DIRT ROAD,
 HV0125'48.5 FEET NORTHWEST OF A FARM ROAD, 25.2 FEET SOUTHWEST FROM THE
 HV0125'CENTER LINE OF THE HIGHWAY, 8.5 FEET SOUTH OF A 20-INCH WALNUT
 HV0125'TREE, ABOUT 5-INCHES HIGHER THAN THE GROUND, NEAR A WHITE
 HV0125'REFERENCE POST, AND SET IN THE TOP OF A CONCRETE POST.  A STANDARD
 HV0125'DISK.
 HV0125
 HV0125                          STATION RECOVERY (1971)
 HV0125
 HV0125'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0125'MARK NOT FOUND.
 HV0125
 HV0125                          STATION RECOVERY (2001)
 HV0125
 HV0125'RECOVERY NOTE BY US POWER SQUADRON 2001 (KNP)
 HV0125'TWO MILES NORTHWEST OF WYE MILLS POST OFFICE THERE IS NO LONGER A T
 HV0125'JUNCTION OF A DIRT ROAD. MARK NOT LOCATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1335 ***********************************************************************
 JU1335  DESIGNATION -  D 77
 JU1335  PID         -  JU1335
 JU1335  STATE/COUNTY-  MD/QUEEN ANNES
 JU1335  COUNTRY     -  US
 JU1335  USGS QUAD   -  PRICE (2017)
 JU1335
 JU1335                         *CURRENT SURVEY CONTROL
 JU1335  ______________________________________________________________________
 JU1335* NAD 83(1986) POSITION- 39 01 47.     (N) 075 53 58.     (W)   SCALED
 JU1335* NAVD 88 ORTHO HEIGHT -    17.220 (meters)       56.50  (feet) ADJUSTED
 JU1335  ______________________________________________________________________
 JU1335  GEOID HEIGHT    -        -34.236 (meters)                     GEOID18
 JU1335  DYNAMIC HEIGHT  -         17.210 (meters)       56.46  (feet) COMP
 JU1335  MODELED GRAVITY -    980,070.5   (mgal)                       NAVD 88
 JU1335
 JU1335  VERT ORDER      -  SECOND    CLASS 0
 JU1335
 JU1335.The horizontal coordinates were scaled from a map and have
 JU1335.an estimated accuracy of +/- 6 seconds.
 JU1335
 JU1335.The orthometric height was determined by differential leveling and
 JU1335.adjusted by the NATIONAL GEODETIC SURVEY
 JU1335.in June 1991.
 JU1335
 JU1335.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1335.GEOID18 height accuracy estimate available here.
 JU1335
 JU1335.Click photographs - Photos may exist for this station.
 JU1335
 JU1335.The dynamic height is computed by dividing the NAVD 88
 JU1335.geopotential number by the normal gravity value computed on the
 JU1335.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1335.degrees latitude (g = 980.6199 gals.).
 JU1335
 JU1335.The modeled gravity was interpolated from observed gravity values.
 JU1335
 JU1335;                    North         East    Units  Estimated Accuracy
 JU1335;SPC MD       -   151,880.      495,290.      MT  (+/- 180 meters Scaled)
 JU1335
 JU1335_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ221204(NAD 83)
 JU1335
 JU1335                          SUPERSEDED SURVEY CONTROL
 JU1335
 JU1335  NGVD 29 (11/26/84)   17.456  (m)           57.27   (f) ADJUSTED    2 0
 JU1335
 JU1335.Superseded values are not recommended for survey control.
 JU1335
 JU1335.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1335.See file dsdata.pdf to determine how the superseded data were derived.
 JU1335
 JU1335_MARKER: DB = BENCH MARK DISK
 JU1335_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1335_STAMPING: D 77 1942
 JU1335_MARK LOGO: CGS
 JU1335_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1335+STABILITY: SURFACE MOTION
 JU1335
 JU1335  HISTORY     - Date     Condition        Report By
 JU1335  HISTORY     - 1942     MONUMENTED       CGS
 JU1335  HISTORY     - 19900517 MARK NOT FOUND   USPSQD
 JU1335
 JU1335                          STATION DESCRIPTION
 JU1335
 JU1335'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JU1335'0.8 MI W FROM BRIDGETOWN.
 JU1335'IN QUEEN ANNES COUNTY, 0.8 MILE WEST ALONG A MACADAM ROAD FROM
 JU1335'THE BRIDGETOWN METHODIST CHURCH AT BRIDGETOWN, CAROLINE COUNTY,
 JU1335'AT THE WYE JUNCTION OF A DIRT ROAD, 107.9 FEET NORTHWEST OF THE
 JU1335'CENTER OF THE JUNCTION, 91 FEET NORTHWEST OF THE CENTERLINE OF
 JU1335'THE MACADAM ROAD, 52 FEET NORTHEAST OF THE CENTERLINE OF THE
 JU1335'DIRT ROAD, AND 2 FEET SOUTHEAST OF A WHITE WOODEN WITNESS POST.
 JU1335'A STANDARD DISK, STAMPED D 77 1942 AND SET IN THE TOP OF A
 JU1335'CONCRETE POST.
 JU1335
 JU1335                          STATION RECOVERY (1990)
 JU1335
 JU1335'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1335'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1175 ***********************************************************************
 JV1175  DESIGNATION -  D 79 RESET
 JV1175  PID         -  JV1175
 JV1175  STATE/COUNTY-  MD/BALTIMORE
 JV1175  COUNTRY     -  US
 JV1175  USGS QUAD   -  TOWSON (2016)
 JV1175
 JV1175                         *CURRENT SURVEY CONTROL
 JV1175  ______________________________________________________________________
 JV1175* NAD 83(1986) POSITION- 39 24 22.9    (N) 076 37 06.7    (W)   HD_HELD2
 JV1175* NAVD 88 ORTHO HEIGHT -   141.43  (meters)      464.0   (feet) RESET
 JV1175  ______________________________________________________________________
 JV1175  GEOID HEIGHT    -        -32.533 (meters)                     GEOID18
 JV1175  VERT ORDER      -  THIRD
 JV1175
 JV1175.The horizontal coordinates were established by autonomous hand held GPS
 JV1175.observations and have an estimated accuracy of +/- 10 meters.
 JV1175
 JV1175.The orthometric height was computed from unverified reset data.
 JV1175
 JV1175.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1175.GEOID18 height accuracy estimate available here.
 JV1175
 JV1175.Click photographs - Photos may exist for this station.
 JV1175
 JV1175;                    North         East    Units  Estimated Accuracy
 JV1175;SPC MD       -   193,187.      432,855.      MT  (+/- 10 meters HH2 GPS)
 JV1175
 JV1175_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6065063122(NAD 83)
 JV1175
 JV1175                          SUPERSEDED SURVEY CONTROL
 JV1175
 JV1175  NGVD 29 (??/??/??)  141.66   (m)          464.8    (f) RESET       3  
 JV1175
 JV1175.Superseded values are not recommended for survey control.
 JV1175
 JV1175.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1175.See file dsdata.pdf to determine how the superseded data were derived.
 JV1175
 JV1175_MARKER: DB = BENCH MARK DISK
 JV1175_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1175_SP_SET: CULVERT
 JV1175_STAMPING: D 79 RESET 1946
 JV1175_MARK LOGO: CGS
 JV1175_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1175_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1175+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2017
 JV1175
 JV1175  HISTORY     - Date     Condition        Report By
 JV1175  HISTORY     - 1946     MONUMENTED       CGS
 JV1175  HISTORY     - 19950510 GOOD             USPSQD
 JV1175  HISTORY     - 20020709 GOOD             USPS
 JV1175  HISTORY     - 20170321 GOOD             BASE9
 JV1175
 JV1175                          STATION DESCRIPTION
 JV1175
 JV1175'DESCRIBED BY COAST AND GEODETIC SURVEY 1946
 JV1175'IN TOWSON.
 JV1175'AT TOWSON, BALTIMORE COUNTY, ABOUT 0.9 MILE WEST OF THE INTERSECTION
 JV1175'OF WEST JOPPA ROAD AND STATE HIGHWAY 141, THENCE ABOUT 550 FEET
 JV1175'SOUTH ON CHARLES STREET AVENUE, (STATE HIGHWAY 139), JUST SOUTH
 JV1175'OF THE RESIDENCE OF REV. H.L. SCHINCKE, IN THE TOP OF THE EAST
 JV1175'HEAD WALL OF A CONCRETE CULVERT, ABOUT 18 INCHES FROM THE NORTH
 JV1175'END AND 8 INCHES FROM EACH EDGE.  A STANDARD DISK, STAMPED
 JV1175'D 79 RESET 1946.
 JV1175
 JV1175                          STATION RECOVERY (1995)
 JV1175
 JV1175'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1175'RECOVERED IN GOOD CONDITION.
 JV1175
 JV1175                          STATION RECOVERY (2002)
 JV1175
 JV1175'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 JV1175'TOP OF CULVERT BETWEEN 630 AND 632 CHARLES ST AVE.DISK IS IN SOLID
 JV1175'PART OF CULVERT HEAD WALL BUT REMAINDER IS CRUMBLING CONCRETE
 JV1175
 JV1175                          STATION RECOVERY (2017)
 JV1175
 JV1175'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 JV1175'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0557 ***********************************************************************
 HU0557  DESIGNATION -  D 8
 HU0557  PID         -  HU0557
 HU0557  STATE/COUNTY-  MD/WICOMICO
 HU0557  COUNTRY     -  US
 HU0557  USGS QUAD   -  WETIPQUIN (2016)
 HU0557
 HU0557                         *CURRENT SURVEY CONTROL
 HU0557  ______________________________________________________________________
 HU0557* NAD 83(1986) POSITION- 38 16 07.     (N) 075 47 23.     (W)   SCALED
 HU0557* NAVD 88 ORTHO HEIGHT -     0.785 (meters)        2.58  (feet) POSTED
 HU0557  ______________________________________________________________________
 HU0557  GEOID HEIGHT    -        -35.841 (meters)                     GEOID18
 HU0557  DYNAMIC HEIGHT  -          0.78  (meters)        2.6   (feet) COMP
 HU0557  MODELED GRAVITY -    979,992.0   (mgal)                       NAVD 88
 HU0557
 HU0557  VERT ORDER      -  * POSTED, SEE BELOW
 HU0557
 HU0557.The horizontal coordinates were scaled from a map and have
 HU0557.an estimated accuracy of +/- 6 seconds.
 HU0557
 HU0557.The orthometric height was determined by differential leveling
 HU0557.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HU0557
 HU0557.* This is a POSTED BENCH MARK height.
 HU0557
 HU0557.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0557.GEOID18 height accuracy estimate available here.
 HU0557
 HU0557.Click photographs - Photos may exist for this station.
 HU0557
 HU0557.The dynamic height is computed by dividing the NAVD 88
 HU0557.geopotential number by the normal gravity value computed on the
 HU0557.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0557.degrees latitude (g = 980.6199 gals.).
 HU0557
 HU0557.The modeled gravity was interpolated from observed gravity values.
 HU0557
 HU0557;                    North         East    Units  Estimated Accuracy
 HU0557;SPC MD       -    67,520.      505,910.      MT  (+/- 180 meters Scaled)
 HU0557
 HU0557_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH309359(NAD 83)
 HU0557
 HU0557                          SUPERSEDED SURVEY CONTROL
 HU0557
 HU0557  NGVD 29 (11/26/84)    1.019  (m)            3.34   (f) ADJUSTED    1 2
 HU0557
 HU0557.Superseded values are not recommended for survey control.
 HU0557
 HU0557.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0557.See file dsdata.pdf to determine how the superseded data were derived.
 HU0557
 HU0557_MARKER: DB = BENCH MARK DISK
 HU0557_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0557_STAMPING: D 8 1935
 HU0557_MARK LOGO: CGS
 HU0557_PROJECTION: PROJECTING 15 CENTIMETERS
 HU0557_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0557+STABILITY: SURFACE MOTION
 HU0557_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0557+SATELLITE: SATELLITE OBSERVATIONS - February 26, 2001
 HU0557
 HU0557  HISTORY     - Date     Condition        Report By
 HU0557  HISTORY     - 1935     MONUMENTED       CGS
 HU0557  HISTORY     - 1963     MARK NOT FOUND   CGS
 HU0557  HISTORY     - 1972     MARK NOT FOUND   NGS
 HU0557  HISTORY     - 20010226 GOOD             USPSQD
 HU0557
 HU0557                          STATION DESCRIPTION
 HU0557
 HU0557'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0557'AT WHITEHAVEN.
 HU0557'AT WHITEHAVEN, ON THE NORTH SHORE OF THE WICOMICO RIVER, ON WATER
 HU0557'STREET MIDWAY BETWEEN CHURCH AND BACK STREETS, 21 FEET SOUTH OF
 HU0557'THE CENTERLINE OF WATER STREET, 104 FEET NORTH OF THE NORTHEAST
 HU0557'CORNER OF THE OLD RIVER WHARF, AND 36 FEET EAST OF THE NORTHEAST
 HU0557'CORNER OF W.A. ANDERSONS STORE.  A STANDARD DISK, STAMPED D 8 1935
 HU0557'AND SET IN THE TOP OF A 6-INCH SQUARE CONCRETE MONUMENT EXTENDING
 HU0557'6 INCHES ABOVE GROUND.
 HU0557
 HU0557                          STATION RECOVERY (1972)
 HU0557
 HU0557'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0557'MARK NOT FOUND.
 HU0557
 HU0557                          STATION RECOVERY (2001)
 HU0557
 HU0557'RECOVERY NOTE BY US POWER SQUADRON 2001 (GVS)
 HU0557'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0226 ***********************************************************************
 JV0226  DESIGNATION -  D 80
 JV0226  PID         -  JV0226
 JV0226  STATE/COUNTY-  MD/HARFORD
 JV0226  COUNTRY     -  US
 JV0226  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0226
 JV0226                         *CURRENT SURVEY CONTROL
 JV0226  ______________________________________________________________________
 JV0226* NAD 83(1986) POSITION- 39 33 41.     (N) 076 27 42.     (W)   SCALED
 JV0226* NAVD 88 ORTHO HEIGHT -   138.568 (meters)      454.62  (feet) ADJUSTED
 JV0226  ______________________________________________________________________
 JV0226  GEOID HEIGHT    -        -32.578 (meters)                     GEOID18
 JV0226  DYNAMIC HEIGHT  -        138.496 (meters)      454.38  (feet) COMP
 JV0226  MODELED GRAVITY -    980,105.8   (mgal)                       NAVD 88
 JV0226
 JV0226  VERT ORDER      -  SECOND    CLASS I
 JV0226
 JV0226.The horizontal coordinates were scaled from a map and have
 JV0226.an estimated accuracy of +/- 6 seconds.
 JV0226
 JV0226.The orthometric height was determined by differential leveling and
 JV0226.adjusted by the NATIONAL GEODETIC SURVEY
 JV0226.in December 2004.
 JV0226
 JV0226.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0226.GEOID18 height accuracy estimate available here.
 JV0226
 JV0226.Click photographs - Photos may exist for this station.
 JV0226
 JV0226.The dynamic height is computed by dividing the NAVD 88
 JV0226.geopotential number by the normal gravity value computed on the
 JV0226.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0226.degrees latitude (g = 980.6199 gals.).
 JV0226
 JV0226.The modeled gravity was interpolated from observed gravity values.
 JV0226
 JV0226;                    North         East    Units  Estimated Accuracy
 JV0226;SPC MD       -   210,470.      446,260.      MT  (+/- 180 meters Scaled)
 JV0226
 JV0226_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ744800(NAD 83)
 JV0226
 JV0226                          SUPERSEDED SURVEY CONTROL
 JV0226
 JV0226  NAVD 88 (06/15/91)  138.592  (m)          454.70   (f) SUPERSEDED  2 0
 JV0226  NGVD 29 (11/26/84)  138.835  (m)          455.49   (f) ADJUSTED    2 0
 JV0226
 JV0226.Superseded values are not recommended for survey control.
 JV0226
 JV0226.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0226.See file dsdata.pdf to determine how the superseded data were derived.
 JV0226
 JV0226_MARKER: DB = BENCH MARK DISK
 JV0226_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0226_SP_SET: BOX CULVERT HEADWALL
 JV0226_STAMPING: D 80 1942
 JV0226_MARK LOGO: CGS
 JV0226_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0226_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0226+STABILITY: SURFACE MOTION
 JV0226_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0226+SATELLITE: SATELLITE OBSERVATIONS - January 03, 2001
 JV0226
 JV0226  HISTORY     - Date     Condition        Report By
 JV0226  HISTORY     - 1942     MONUMENTED       CGS
 JV0226  HISTORY     - 1971     GOOD             NGS
 JV0226  HISTORY     - 19971004 GOOD             USPSQD
 JV0226  HISTORY     - 20010103 GOOD             MDSHA
 JV0226  HISTORY     - 20010217 MARK NOT FOUND   USPSQD
 JV0226
 JV0226                          STATION DESCRIPTION
 JV0226
 JV0226'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0226'1.5 MI NE FROM UPPER CROSSROADS.
 JV0226'THIS MARK IS ABOUT 1.5 MILES NORTHEAST ALONG HIGHWAY 165 FROM THE
 JV0226'INTERSECTION AT UPPER CROSSROADS, HARFORD COUNTY, 12.4 FEET EAST
 JV0226'OF THE CENTER LINE OF THE HIGHWAY, 11.0 FEET SOUTH OF THE NORTH
 JV0226'END OF A GUARD RAIL, 63.0 FEET SOUTH OF POLE NUMBER 130, SET IN THE
 JV0226'NORTH END OF THE EAST HEADWALL OF A 4 FOOT CONCRETE BOX CULVERT, ABOUT
 JV0226'LEVEL WITH THE HIGHWAY, STAMPED D 80 1942, SET IN A DRILL HOLE.
 JV0226
 JV0226                          STATION RECOVERY (1971)
 JV0226
 JV0226'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0226'RECOVERED IN GOOD CONDITION.
 JV0226
 JV0226                          STATION RECOVERY (1997)
 JV0226
 JV0226'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0226'RECOVERED IN GOOD CONDITION.
 JV0226
 JV0226                          STATION RECOVERY (2001)
 JV0226
 JV0226'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV0226'RECOVERED AS DESCRIBED.
 JV0226
 JV0226                          STATION RECOVERY (2001)
 JV0226
 JV0226'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV0226'BRIDGE WALL BADLY DETERIORATING. MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6816 ***********************************************************************
 DG6816  DESIGNATION -  D 80 RESET
 DG6816  PID         -  DG6816
 DG6816  STATE/COUNTY-  MD/HARFORD
 DG6816  COUNTRY     -  US
 DG6816  USGS QUAD   -  JARRETTSVILLE (2016)
 DG6816
 DG6816                         *CURRENT SURVEY CONTROL
 DG6816  ______________________________________________________________________
 DG6816* NAD 83(1986) POSITION- 39 33 35.     (N) 076 27 44.     (W)   SCALED
 DG6816* NAVD 88 ORTHO HEIGHT -   130.750 (meters)      428.97  (feet) ADJUSTED
 DG6816  ______________________________________________________________________
 DG6816  GEOID HEIGHT    -        -32.579 (meters)                     GEOID18
 DG6816  DYNAMIC HEIGHT  -        130.682 (meters)      428.75  (feet) COMP
 DG6816  MODELED GRAVITY -    980,105.6   (mgal)                       NAVD 88
 DG6816
 DG6816  VERT ORDER      -  SECOND    CLASS I
 DG6816
 DG6816.The horizontal coordinates were scaled from a map and have
 DG6816.an estimated accuracy of +/- 6 seconds.
 DG6816
 DG6816.The orthometric height was determined by differential leveling and
 DG6816.adjusted by the NATIONAL GEODETIC SURVEY
 DG6816.in December 2004.
 DG6816
 DG6816.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6816.GEOID18 height accuracy estimate available here.
 DG6816
 DG6816.Click photographs - Photos may exist for this station.
 DG6816
 DG6816.The dynamic height is computed by dividing the NAVD 88
 DG6816.geopotential number by the normal gravity value computed on the
 DG6816.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6816.degrees latitude (g = 980.6199 gals.).
 DG6816
 DG6816.The modeled gravity was interpolated from observed gravity values.
 DG6816
 DG6816;                    North         East    Units  Estimated Accuracy
 DG6816;SPC MD       -   210,280.      446,220.      MT  (+/- 180 meters Scaled)
 DG6816
 DG6816_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ743799(NAD 83)
 DG6816
 DG6816                          SUPERSEDED SURVEY CONTROL
 DG6816
 DG6816.No superseded survey control is available for this station.
 DG6816
 DG6816_MARKER: DD = SURVEY DISK
 DG6816_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6816_STAMPING: D 80 RESET 2001
 DG6816_MARK LOGO: MDSHA
 DG6816_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6816_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6816+STABILITY: SURFACE MOTION
 DG6816_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DG6816+SATELLITE: SATELLITE OBSERVATIONS - 2001
 DG6816
 DG6816  HISTORY     - Date     Condition        Report By
 DG6816  HISTORY     - 2001     MONUMENTED       MDSHA
 DG6816
 DG6816                          STATION DESCRIPTION
 DG6816
 DG6816'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DG6816'THE STATION IS LOCATED ABOUT 1.3 MILES (2.1 KM) NORTH OF CROSSROADS,
 DG6816'AND 3.2 MILES (5.1 KM) SOUTH OF JARRETTSVILLE.  TO REACH THE STATION
 DG6816'FROM THE INTERSECTION OF U.S.HIGHWAY 1 AND STATE HIGHWAY 152 SOUTH OF
 DG6816'BEL AIR, GO NORTHWEST ALONG STATE HIGHWAY 152 FOR 5.75 MILES (9.25 KM)
 DG6816'TO STATE HIGHWAY 165.  TURN RIGHT AND GO NORTHEAST ALONG STATE HIGHWAY
 DG6816'165 FOR 1.05 MILES (1.69 KM) TO CHARLES STREET LEADING NORTHWEST.
 DG6816'CONTINUE NORTH ALONG STATE HIGHWAY 165 FOR 0.25 MILES (0.40 KM) TO THE
 DG6816'STATION ON THE LEFT.  THE STATION IS A MARYLAND STATE SURVEY DISK SET
 DG6816'IN THE TOP OF A 12 INCH ROUND CONCRETE MONUMENT, 21.2 FEET (6.5 M)
 DG6816'WEST OF THE CENTER LINE OF THE HIGHWAY, 2.4 FEET (0.7 M) EAST OF POWER
 DG6816'POLE NUMBER 115263, 24.0 FEET (7.3 M) NORTH OF THE PROJECTED CENTER OF
 DG6816'THE MACADAM DRIVEWAY LEADING EAST TO HOUSE NUMBER 2113, 98.5 FEET
 DG6816'(30.0 M) SOUTH OF THE CENTER OF A METAL DROP INLET GRATE FOR A
 DG6816'CONCRETE PIPE RUNNING UNDER THE HIGHWAY, 1.5 FEET (0.5 M) EAST OF A
 DG6816'CARSONITE WITNESS POST AND ABOUT LEVEL WITH THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1659 ***********************************************************************
 JV1659  DESIGNATION -  D 81
 JV1659  PID         -  JV1659
 JV1659  STATE/COUNTY-  MD/CARROLL
 JV1659  COUNTRY     -  US
 JV1659  USGS QUAD   -  MANCHESTER (2016)
 JV1659
 JV1659                         *CURRENT SURVEY CONTROL
 JV1659  ______________________________________________________________________
 JV1659* NAD 83(1986) POSITION- 39 41 20.     (N) 076 58 20.     (W)   SCALED
 JV1659* NAVD 88 ORTHO HEIGHT -   231.117 (meters)      758.26  (feet) ADJUSTED
 JV1659  ______________________________________________________________________
 JV1659  GEOID HEIGHT    -        -32.572 (meters)                     GEOID18
 JV1659  DYNAMIC HEIGHT  -        230.997 (meters)      757.86  (feet) COMP
 JV1659  MODELED GRAVITY -    980,101.1   (mgal)                       NAVD 88
 JV1659
 JV1659  VERT ORDER      -  SECOND    CLASS 0
 JV1659
 JV1659.The horizontal coordinates were scaled from a map and have
 JV1659.an estimated accuracy of +/- 6 seconds.
 JV1659
 JV1659.The orthometric height was determined by differential leveling and
 JV1659.adjusted by the NATIONAL GEODETIC SURVEY
 JV1659.in June 1991.
 JV1659
 JV1659.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1659.GEOID18 height accuracy estimate available here.
 JV1659
 JV1659.Click photographs - Photos may exist for this station.
 JV1659
 JV1659.The dynamic height is computed by dividing the NAVD 88
 JV1659.geopotential number by the normal gravity value computed on the
 JV1659.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1659.degrees latitude (g = 980.6199 gals.).
 JV1659
 JV1659.The modeled gravity was interpolated from observed gravity values.
 JV1659
 JV1659;                    North         East    Units  Estimated Accuracy
 JV1659;SPC MD       -   224,490.      402,380.      MT  (+/- 180 meters Scaled)
 JV1659
 JV1659_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ308950(NAD 83)
 JV1659
 JV1659                          SUPERSEDED SURVEY CONTROL
 JV1659
 JV1659  NGVD 29 (11/26/84)  231.316  (m)          758.91   (f) ADJUSTED    2 0
 JV1659
 JV1659.Superseded values are not recommended for survey control.
 JV1659
 JV1659.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1659.See file dsdata.pdf to determine how the superseded data were derived.
 JV1659
 JV1659_MARKER: DB = BENCH MARK DISK
 JV1659_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1659_STAMPING: D 81 1942
 JV1659_MARK LOGO: CGS
 JV1659_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1659+STABILITY: SURFACE MOTION
 JV1659
 JV1659  HISTORY     - Date     Condition        Report By
 JV1659  HISTORY     - 1942     MONUMENTED       CGS
 JV1659  HISTORY     - 20020305 MARK NOT FOUND   NGS
 JV1659
 JV1659                          STATION DESCRIPTION
 JV1659
 JV1659'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1659'3.8 MI E FROM UNION MILLS.
 JV1659'3.8 MILES EAST ALONG DEEP RUN ROAD FROM THE POST OFFICE AT UNION
 JV1659'MILLS, CARROLL COUNTY, IN A WOODS, 56.6 FEET SOUTH OF THE SOUTH
 JV1659'EDGE OF A PASTURE, 23.9 FEET SOUTHEAST OF THE CENTER LINE OF THE
 JV1659'ROAD, 17 FEET WEST OF AN 8-INCH OAK TREE, AND NEAR A WHITE
 JV1659'WOODEN WITNESS POST.  A STANDARD DISK, STAMPED D 81 1942 AND
 JV1659'SET IN THE TOP OF A CONCRETE POST.
 JV1659
 JV1659                          STATION RECOVERY (2002)
 JV1659
 JV1659'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (CSM)
 JV1659'THE AREA IS NOW DEVELOPED WITH HOMESITES. PASTURE, OAK TREE AND WOODS
 JV1659'ARE NO LONGER PRESENT.  THE CARROLL COUNTY SURVEYOR WAS CONSULTED AND
 JV1659'STATED THAT THE MARK WAS MOST LIKELY DESTROYED DURING ROAD
 JV1659'CONSTRUCTION PROJECTS IN THE SEVENTIES AND EIGHTIES.  THE DISK WAS NOT
 JV1659'RETRIEVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1956 ***********************************************************************
 JV1956  DESIGNATION -  D 82 RESET
 JV1956  PID         -  JV1956
 JV1956  STATE/COUNTY-  MD/FREDERICK
 JV1956  COUNTRY     -  US
 JV1956  USGS QUAD   -  EMMITSBURG (2016)
 JV1956
 JV1956                         *CURRENT SURVEY CONTROL
 JV1956  ______________________________________________________________________
 JV1956* NAD 83(1986) POSITION- 39 42 08.8    (N) 077 19 02.1    (W)   HD_HELD2
 JV1956* NAVD 88 ORTHO HEIGHT -   121.43  (+/-2cm)      398.4   (feet) VERTCON3
 JV1956  ______________________________________________________________________
 JV1956  GEOID HEIGHT    -        -33.328 (meters)                     GEOID18
 JV1956  VERT ORDER      -  THIRD (See Below)
 JV1956
 JV1956.The horizontal coordinates were established by autonomous hand held GPS
 JV1956.observations and have an estimated accuracy of +/- 10 meters.
 JV1956
 JV1956.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1956.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1956
 JV1956.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1956.GEOID18 height accuracy estimate available here.
 JV1956
 JV1956.The vertical order pertains to the NGVD 29 superseded value.
 JV1956
 JV1956.Click photographs - Photos may exist for this station.
 JV1956
 JV1956;                    North         East    Units  Estimated Accuracy
 JV1956;SPC MD       -   226,040.      372,790.      MT  (+/- 10 meters HH2 GPS)
 JV1956
 JV1956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0133497299(NAD 83)
 JV1956
 JV1956                          SUPERSEDED SURVEY CONTROL
 JV1956
 JV1956  NGVD 29 (??/??/??)  121.62   (m)          399.0    (f) RESET       3  
 JV1956
 JV1956.Superseded values are not recommended for survey control.
 JV1956
 JV1956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1956.See file dsdata.pdf to determine how the superseded data were derived.
 JV1956
 JV1956_MARKER: DB = BENCH MARK DISK
 JV1956_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1956_STAMPING: D 82 RESET 1969
 JV1956_MARK LOGO: CGS
 JV1956_PROJECTION: FLUSH
 JV1956_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1956+STABILITY: SURFACE MOTION
 JV1956_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1956+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2023
 JV1956
 JV1956  HISTORY     - Date     Condition        Report By
 JV1956  HISTORY     - 1969     MONUMENTED       MDSRC
 JV1956  HISTORY     - 1977     GOOD             MDDT
 JV1956  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JV1956  HISTORY     - 20070311 GOOD             GEOCAC
 JV1956  HISTORY     - 20230315 GOOD             PROFLN
 JV1956
 JV1956                          STATION DESCRIPTION
 JV1956
 JV1956'DESCRIBED BY MD STATE ROADS COMM 1969
 JV1956'0.5 MI SE FROM EMMITSBURG.
 JV1956'0.5 MILE SOUTHEAST ALONG STATE HIGHWAY 97 FROM THE EMMITSBURG
 JV1956'POST OFFICE, 66.3 FEET NORTHEAST OF THE NORTHEAST CORNER OF A
 JV1956'ONE-STORY BRICK RANCH HOUSE BELONGING TO DOCTOR BALDACCHINO
 JV1956'(DENTIST), 0.15 MILE WEST OF THE JUNCTION OF STATE HIGHWAY 15,
 JV1956'3.7 FEET NORTH OF POWER POLE F 15178, 3.5 FEET SOUTH OF
 JV1956'MAINTENANCE MARKER 22 AND SET IN THE TOP OF A CONCRETE POST
 JV1956'FLUSH WITH THE GROUND.
 JV1956
 JV1956                          STATION RECOVERY (1977)
 JV1956
 JV1956'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1977
 JV1956'RECOVERED IN GOOD CONDITION NEW DESCRIPTION FROM THE NEW POST OFFICE
 JV1956'AT EMMITSBURG PROCEED NORTH ON BUSINESS RTE US 15 TO THE INTERSECTION
 JV1956'OF MD RTE 97, TURN RIGHT AND PROCEED EAST ON MD RTE 97 FOR 0.6 MILES
 JV1956'TO THE RAMP TO US RTE 15 SOUTH, FOLLOW RAMP FOR 200 FEET TO SATION.
 JV1956'IT IS 3.7 FT NORTH OF POWER POLE NO F 1 S 1 78 WITH WITNESS SIGN
 JV1956'NAILED TO FRONT OF POLE, 66.3 FEET NORTHEAST OF THE NORTHEAST CORNER
 JV1956'OF A RANCHER BELONGING TO DR BALDACCHIND DDS. IT IS ALSO 0.15 MILES
 JV1956'WEST OF THE JUNCTION OF OLD MD RTE 97 AND US RTE 15.
 JV1956
 JV1956                          STATION RECOVERY (1990)
 JV1956
 JV1956'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1956'MARK NOT FOUND.
 JV1956
 JV1956                          STATION RECOVERY (2007)
 JV1956
 JV1956'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JV1956'FROM THE JUNCTION OF SETON AVENUE AND MAIN STREET IN EMMITSBURG,
 JV1956'PROCEED E ALONG EAST MAIN STREET FOR ABOUT 0.5 MI TO THE TRAFFIC LIGHT
 JV1956'AND INTERSECTION OF SILO HILL ROAD. FOLLOW SILO HILL ROAD S TO T
 JV1956'INTERSECTION AND MARK STRAIGHT AHEAD.
 JV1956'
 JV1956'MARK IS ALONG THE S SIDE OF MAIN STREET EXTENDED - 3.7 FEET N OF POLE
 JV1956'F1S178, AND BETWEEN THE DRIVEWAYS OF HOUSE NUMBER 602 AND HOUSE NUMBER
 JV1956'604. MARK IS 66.3 FEET NE OF THE NE CORNER OF HOUSE NUMBER 602.
 JV1956'
 JV1956
 JV1956                          STATION RECOVERY (2023)
 JV1956
 JV1956'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2023 (JRO)
 JV1956'THE MARK IS NOW IN THE MIDDLE OF A CONCRETE SIDEWALK, LEVEL WITH THE
 JV1956'SIDEWALK.  HOUSE 602 HAS BEEN REPLACED BY A PARKING LOT FOR A
 JV1956'PROFESSIONAL BUILDING NUMBER 600 - INSURANCE BROKERS OF MARYLAND.  THE
 JV1956'MARK IS 8 FT (2.4 M) WEST OF THE WEST LINE EXTENDED OF HOUSE 604,
 JV1956'1-STORY BRICK, BETWEEN A POLE WITH TRANSFORMER AND GUY WIRES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1683 ***********************************************************************
 JV1683  DESIGNATION -  D 83
 JV1683  PID         -  JV1683
 JV1683  STATE/COUNTY-  MD/CARROLL
 JV1683  COUNTRY     -  US
 JV1683  USGS QUAD   -  LINEBORO (2016)
 JV1683
 JV1683                         *CURRENT SURVEY CONTROL
 JV1683  ______________________________________________________________________
 JV1683* NAD 83(2011) POSITION- 39 43 01.42038(N) 076 50 25.21276(W)   ADJUSTED
 JV1683* NAD 83(2011) ELLIP HT-   173.458 (meters)        (06/27/12)   ADJUSTED
 JV1683* NAD 83(2011) EPOCH   -  2010.00
 JV1683* NAVD 88 ORTHO HEIGHT -   206.286 (meters)      676.79  (feet) ADJUSTED
 JV1683  ______________________________________________________________________
 JV1683  GEOID HEIGHT    -        -32.458 (meters)                     GEOID18
 JV1683  NAD 83(2011) X  -  1,118,514.399 (meters)                     COMP
 JV1683  NAD 83(2011) Y  - -4,783,957.294 (meters)                     COMP
 JV1683  NAD 83(2011) Z  -  4,053,981.184 (meters)                     COMP
 JV1683  LAPLACE CORR    -          2.39  (seconds)                    DEFLEC18
 JV1683  DYNAMIC HEIGHT  -        206.179 (meters)      676.44  (feet) COMP
 JV1683  MODELED GRAVITY -    980,105.1   (mgal)                       NAVD 88
 JV1683
 JV1683  VERT ORDER      -  SECOND    CLASS 0
 JV1683
 JV1683  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV1683  Standards:
 JV1683         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV1683            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV1683  -------------------------------------------------------------------
 JV1683  NETWORK    1.57   5.14           0.69   0.58   2.62      0.17680666
 JV1683  -------------------------------------------------------------------
 JV1683  Click here for local accuracies and other accuracy information.
 JV1683
 JV1683.The horizontal coordinates were established by GPS observations
 JV1683.and adjusted by the National Geodetic Survey in June 2012.
 JV1683
 JV1683.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV1683.been affixed to the stable North American tectonic plate. See 
 JV1683.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV1683
 JV1683.The horizontal coordinates are valid at the epoch date displayed above
 JV1683.which is a decimal equivalence of Year/Month/Day.
 JV1683
 JV1683.The orthometric height was determined by differential leveling and
 JV1683.adjusted by the NATIONAL GEODETIC SURVEY
 JV1683.in June 1991.
 JV1683
 JV1683.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1683.GEOID18 height accuracy estimate available here.
 JV1683
 JV1683.Click photographs - Photos may exist for this station.
 JV1683
 JV1683.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV1683
 JV1683.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1683
 JV1683.The ellipsoidal height was determined by GPS observations
 JV1683.and is referenced to NAD 83.
 JV1683
 JV1683.The dynamic height is computed by dividing the NAVD 88
 JV1683.geopotential number by the normal gravity value computed on the
 JV1683.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1683.degrees latitude (g = 980.6199 gals.).
 JV1683
 JV1683.The modeled gravity was interpolated from observed gravity values.
 JV1683
 JV1683. The following values were computed from the NAD 83(2011) position.
 JV1683
 JV1683;                    North         East     Units Scale Factor Converg.
 JV1683;SPC MD       -   227,627.341   413,691.138   MT  1.00005764   +0 06 00.8
 JV1683;SPC MD       -   746,807.37  1,357,251.68   sFT  1.00005764   +0 06 00.8
 JV1683;SPC PA S     -    43,009.187   678,001.107   MT  1.00004085   +0 35 24.7
 JV1683;SPC PA S     -   141,105.97  2,224,408.63   sFT  1.00004085   +0 35 24.7
 JV1683;UTM  18      - 4,397,973.648   342,257.925   MT  0.99990635   -1 10 34.4
 JV1683
 JV1683!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1683!SPC MD       -   0.99997279  x   1.00005764  =   1.00003043
 JV1683!SPC PA S     -   0.99997279  x   1.00004085  =   1.00001364
 JV1683!UTM  18      -   0.99997279  x   0.99990635  =   0.99987914
 JV1683
 JV1683_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4225797973(NAD 83)
 JV1683
 JV1683                          SUPERSEDED SURVEY CONTROL
 JV1683
 JV1683  NAD 83(2007)-  39 43 01.42062(N)    076 50 25.21351(W) AD(2002.00) 0
 JV1683  ELLIP H (02/10/07)  173.479  (m)                       GP(2002.00)    
 JV1683  ELLIP H (08/30/02)  173.484  (m)                       GP(       ) 4 2
 JV1683  ELLIP H (04/01/98)  173.282  (m)                       GP(       ) 4 1
 JV1683  NAD 83(1991)-  39 43 01.42053(N)    076 50 25.21352(W) AD(       ) 1
 JV1683  ELLIP H (01/27/92)  173.397  (m)                       GP(       ) 4 1
 JV1683  NAD 83(1986)-  39 43 01.41912(N)    076 50 25.22500(W) AD(       ) 1
 JV1683  NAD 27      -  39 43 01.05684(N)    076 50 26.34607(W) AD(       ) 1
 JV1683  NAVD 88 (11/26/01)  205.9    (m)  GEOID99  model used  GPS OBS        
 JV1683  NAVD 88 (07/03/96)  205.9    (m)  UNKNOWN  model used  GPS OBS        
 JV1683  NGVD 29             206.50   (m)          677.5    (f) LEVELING    3  
 JV1683  NGVD 29 (11/26/84)  206.498  (m)          677.49   (f) ADJUSTED    2 0
 JV1683
 JV1683.Superseded values are not recommended for survey control.
 JV1683
 JV1683.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1683.See file dsdata.pdf to determine how the superseded data were derived.
 JV1683
 JV1683_MARKER: DB = BENCH MARK DISK
 JV1683_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV1683_SP_SET: BRIDGE WING WALL
 JV1683_STAMPING: D 83 1942
 JV1683_MARK LOGO: CGS
 JV1683_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1683_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1683_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1683+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2016
 JV1683
 JV1683  HISTORY     - Date     Condition        Report By
 JV1683  HISTORY     - 1942     MONUMENTED       CGS
 JV1683  HISTORY     - 19860115 GOOD
 JV1683  HISTORY     - 19951128 GOOD             MCCRON
 JV1683  HISTORY     - 19970626 POOR             MD-005
 JV1683  HISTORY     - 20070402 POOR             MD-005
 JV1683  HISTORY     - 20150412 POOR             RODCON
 JV1683  HISTORY     - 20160217 GOOD             BASE9
 JV1683
 JV1683                          STATION DESCRIPTION
 JV1683
 JV1683'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1683'0.4 MI SE FROM LINEBORO.
 JV1683'0.4 MILE SOUTHEAST ALONG THE WESTERN MARYLAND RAILWAY FROM THE
 JV1683'STATION AT LINEBORO, CARROLL COUNTY, 79.5 FEET NORTH OF THE
 JV1683'CENTER LINE OF A DIRT ROAD, IN THE TOP OF THE SOUTHEAST END OF A
 JV1683'BRIDGE, AND 7.3 FEET SOUTH OF THE CENTER LINE OF THE TRACK.  A
 JV1683'STANDARD DISK, STAMPED D 83 1942.
 JV1683
 JV1683                          STATION RECOVERY (1986)
 JV1683
 JV1683'RECOVERED 1986
 JV1683'RECOVERED IN GOOD CONDITION.
 JV1683
 JV1683                          STATION RECOVERY (1995)
 JV1683
 JV1683'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV1683'RECOVERED AS DESCRIBED.
 JV1683
 JV1683                          STATION RECOVERY (1997)
 JV1683
 JV1683'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV1683'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  A
 JV1683'COMPLETE DESCRIPTION FOLLOWS.  STATION IS LOCATED IN THE TOWN OF
 JV1683'LINEBORO, CARROLL COUNTY.  TO REACH THE STATION FROM THE INTERSECTION
 JV1683'OF ROUTE 86 (MAIN STREET) AND THE WESTERN MARYLAND RAILROAD TRACKS IN
 JV1683'THE TOWN OF LINEBORO, GO NORTHEAST ON ROUTE 86 FOR ABOUT 200 FEET
 JV1683'(61.0 M) TO THE INTERSECTION WITH MILL STREET SOUTH ON THE RIGHT. TURN
 JV1683'RIGHT AND GO SOUTHEAST ON MILL STREET SOUTH FOR 0.15 MILES (0.24 KM)
 JV1683'TO THE INTERSECTION WITH THE WESTERN MARYLAND RAILROAD TRACKS AND
 JV1683'BAUGHMAN MILL ROAD STRAIGHT AHEAD.  PROCEED STRAIGHT AHEAD AND GO
 JV1683'SOUTHEAST AND THEN EAST ON BAUGHMAN MILL ROAD FOR 0.15 MILES (0.24 KM)
 JV1683'TO THE INTERSECTION WITH THE WESTERN MARYLAND RAILROAD TRACKS AGAIN.
 JV1683'THE STATION IS LOCATED ABOUT 270 FEET (82.3 M) NORTHWEST ALONG THE
 JV1683'RAILROAD TRACKS ON RAILROAD BRIDGE STRUCTURE 387, OVER THE GUNPOWDER
 JV1683'FALLS.  THE MARK IS A STANDARD BENCH MARK DISK SET IN THE TOP OF A
 JV1683'WING WALL ON THE SOUTH SIDE OF THE BRIDGE.IT IS 80.O FEET NORTH OF THE
 JV1683'CENTER OF BAUGHMAN MILL ROAD, 3.5 FEET (1.1 M) SOUTHEAST OF THE END OF
 JV1683'A WINGWALL RUNNING NORTHWEST FROM THE SOUTHEAST ABUTMENT WALL, AND 4.7
 JV1683'FEET (1.4 M) SOUTHWEST OF THE SOUTHWEST RAIL.  NOTE- BECAUSE THE GPS
 JV1683'DERIVED ORTHOMETRIC HEIGHT OF THE STATION DIFFERED FROM THE LEVELED
 JV1683'HEIGHT BY MORE THAN A DECIMETER, THE STAMPING WAS OBLITERATED, AND
 JV1683'SOME CONCRETE WORK APPEARS TO HAVE BEEN DONE OVER THE YEARS, THIS MARK
 JV1683'MAY HAVE BEEN DISTURBED.
 JV1683
 JV1683                          STATION RECOVERY (2007)
 JV1683
 JV1683'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 JV1683'THE MARK WAS RECOVERED AS DESCRIBED, HOWEVER THE CONCRETE WING WALL
 JV1683'CONTAINING THE DISK IS DETERIORATING.
 JV1683
 JV1683                          STATION RECOVERY (2015)
 JV1683
 JV1683'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 JV1683'MARK RECOVERED IN POOR CONDITION.
 JV1683
 JV1683                          STATION RECOVERY (2016)
 JV1683
 JV1683'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 JV1683'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4407 ***********************************************************************
 AI4407  DESIGNATION -  D 83 ECC
 AI4407  PID         -  AI4407
 AI4407  STATE/COUNTY-  MD/CARROLL
 AI4407  COUNTRY     -  US
 AI4407  USGS QUAD   -  LINEBORO (2016)
 AI4407
 AI4407                         *CURRENT SURVEY CONTROL
 AI4407  ______________________________________________________________________
 AI4407* NAD 83(2011) POSITION- 39 43 01.33440(N) 076 50 25.18727(W)   ADJUSTED
 AI4407* NAD 83(2011) ELLIP HT-   173.341 (meters)        (06/27/12)   ADJUSTED
 AI4407* NAD 83(2011) EPOCH   -  2010.00
 AI4407* NAVD 88 ORTHO HEIGHT -   205.8   (meters)      675.    (feet) GPS OBS
 AI4407  ______________________________________________________________________
 AI4407  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4407  GEOID HEIGHT    -        -32.464 (meters)                     GEOID99
 AI4407  GEOID HEIGHT    -        -32.458 (meters)                     GEOID18
 AI4407  NAD 83(2011) X  -  1,118,515.355 (meters)                     COMP
 AI4407  NAD 83(2011) Y  - -4,783,958.719 (meters)                     COMP
 AI4407  NAD 83(2011) Z  -  4,053,979.069 (meters)                     COMP
 AI4407  LAPLACE CORR    -          2.39  (seconds)                    DEFLEC18
 AI4407
 AI4407  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4407  Standards:
 AI4407         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4407            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4407  -------------------------------------------------------------------
 AI4407  NETWORK    0.93   1.49           0.41   0.34   0.76     -0.06672995
 AI4407  -------------------------------------------------------------------
 AI4407  Click here for local accuracies and other accuracy information.
 AI4407
 AI4407.The horizontal coordinates were established by GPS observations
 AI4407.and adjusted by the National Geodetic Survey in June 2012.
 AI4407
 AI4407.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4407.been affixed to the stable North American tectonic plate. See 
 AI4407.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4407
 AI4407.The horizontal coordinates are valid at the epoch date displayed above
 AI4407.which is a decimal equivalence of Year/Month/Day.
 AI4407
 AI4407.The orthometric height was determined by GPS observations and a
 AI4407.high-resolution geoid model.
 AI4407
 AI4407.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4407.GEOID18 height accuracy estimate available here.
 AI4407
 AI4407.Click photographs - Photos may exist for this station.
 AI4407
 AI4407.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4407
 AI4407.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4407
 AI4407.The ellipsoidal height was determined by GPS observations
 AI4407.and is referenced to NAD 83.
 AI4407
 AI4407. The following values were computed from the NAD 83(2011) position.
 AI4407
 AI4407;                    North         East     Units Scale Factor Converg.
 AI4407;SPC MD       -   227,624.690   413,691.750   MT  1.00005764   +0 06 00.8
 AI4407;SPC MD       -   746,798.67  1,357,253.68   sFT  1.00005764   +0 06 00.8
 AI4407;UTM  18      - 4,397,970.984   342,258.477   MT  0.99990634   -1 10 34.3
 AI4407
 AI4407!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4407!SPC MD       -   0.99997281  x   1.00005764  =   1.00003044
 AI4407!UTM  18      -   0.99997281  x   0.99990634  =   0.99987915
 AI4407
 AI4407_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4225897970(NAD 83)
 AI4407
 AI4407                          SUPERSEDED SURVEY CONTROL
 AI4407
 AI4407  NAD 83(2007)-  39 43 01.33460(N)    076 50 25.18803(W) AD(2002.00) 0
 AI4407  ELLIP H (02/10/07)  173.362  (m)                       GP(2002.00)    
 AI4407  ELLIP H (08/30/02)  173.357  (m)                       GP(       ) 4 2
 AI4407  NAD 83(1991)-  39 43 01.33469(N)    076 50 25.18816(W) AD(       ) 1
 AI4407  ELLIP H (03/31/00)  173.277  (m)                       GP(       ) 3 1
 AI4407
 AI4407.Superseded values are not recommended for survey control.
 AI4407
 AI4407.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4407.See file dsdata.pdf to determine how the superseded data were derived.
 AI4407
 AI4407_MARKER: Z = SEE DESCRIPTION
 AI4407_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 AI4407_MARK LOGO: MD-005
 AI4407_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI4407_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI4407_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4407+SATELLITE: SATELLITE OBSERVATIONS - 1997
 AI4407
 AI4407  HISTORY     - Date     Condition        Report By
 AI4407  HISTORY     - 1997     MONUMENTED       MD-005
 AI4407
 AI4407                          STATION DESCRIPTION
 AI4407
 AI4407'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4407'DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  THE
 AI4407'STATION IS IN THE TOWN OF LINEBORO, CARROLL COUNTY ALONG THE WESTERN
 AI4407'MARYLAND RAILROAD.  TO REACH THE STATION FROM THE INTERSECTION OF THE
 AI4407'WESTERN MARYLAND RAILROAD TRACKS WITH ROUTE 86 (MAIN STREET) IN
 AI4407'LINEBORO, GO NORTHEAST ON ROUTE 86 FOR 200 FEET (61.0 M) TO THE
 AI4407'INTERSECTION WITH MILL STREET SOUTH ON THE RIGHT.  TURN RIGHT AND GO
 AI4407'SOUTHEAST ON MILL STREET SOUTH FOR 0.15 MILES (0.24 KM) TO THE
 AI4407'INTERSECTION WITH THE WESTERN MARYLAND RAILROAD TRACKS AND BAUGHMAN
 AI4407'MILL ROAD STRAIGHT AHEAD.  PROCEED STRAIGHT AHEAD ON BAUGHMAN MILL
 AI4407'ROAD AND GO SOUTH AND THEN EAST FOR 0.15 MILES (0.24 KM) TO THE
 AI4407'INTERSECTION WITH THE WESTERN MARYLAND RAILROAD TRACKS AGAIN. STATION
 AI4407'IS 270 FEET (82.3 M) NORTHWEST ALONG THE RAILROAD ON THE SOUTH SIDE OF
 AI4407'RAILROAD BRIDGE 387 OVER THE GUNPOWDER FALLS.  STATION IS A WOODEN
 AI4407'STAKE DRIVEN FLUSH TO THE GROUND 9.5 FEET (2.9 M) SOUTHWEST OF BENCH
 AI4407'MARK DISK D 83 IN THE TOP OF A CONCRETE WINGWALL, AND 9.5 FEET (2.9 M)
 AI4407'NORTHWEST FROM THE SOUTH END CORNER OF THE SOUTHEAST MOST BRIDGE
 AI4407'ABUTMENT WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1209 ***********************************************************************
 HV1209  DESIGNATION -  D 84
 HV1209  PID         -  HV1209
 HV1209  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1209  COUNTRY     -  US
 HV1209  USGS QUAD   -  LANHAM (2016)
 HV1209
 HV1209                         *CURRENT SURVEY CONTROL
 HV1209  ______________________________________________________________________
 HV1209* NAD 83(1986) POSITION- 38 53 23.33   (N) 076 51 34.04   (W)   HD_HELD1
 HV1209* NAVD 88 ORTHO HEIGHT -    48.595 (meters)      159.43  (feet) ADJUSTED
 HV1209  ______________________________________________________________________
 HV1209  GEOID HEIGHT    -        -32.461 (meters)                     GEOID18
 HV1209  DYNAMIC HEIGHT  -         48.569 (meters)      159.35  (feet) COMP
 HV1209  MODELED GRAVITY -    980,079.5   (mgal)                       NAVD 88
 HV1209
 HV1209  VERT ORDER      -  SECOND    CLASS 0
 HV1209
 HV1209.The horizontal coordinates were determined by differentially corrected
 HV1209.hand held GPS observations or other comparable positioning techniques
 HV1209.and have an estimated accuracy of +/- 3 meters.
 HV1209
 HV1209.The orthometric height was determined by differential leveling and
 HV1209.adjusted by the NATIONAL GEODETIC SURVEY
 HV1209.in June 1991.
 HV1209
 HV1209.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1209.GEOID18 height accuracy estimate available here.
 HV1209
 HV1209.Click photographs - Photos may exist for this station.
 HV1209
 HV1209.The dynamic height is computed by dividing the NAVD 88
 HV1209.geopotential number by the normal gravity value computed on the
 HV1209.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1209.degrees latitude (g = 980.6199 gals.).
 HV1209
 HV1209.The modeled gravity was interpolated from observed gravity values.
 HV1209
 HV1209;                    North         East    Units  Estimated Accuracy
 HV1209;SPC MD       -   135,783.9     412,193.1     MT  (+/- 3 meters HH1 GPS) 
 HV1209
 HV1209_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3873006192(NAD 83)
 HV1209
 HV1209                          SUPERSEDED SURVEY CONTROL
 HV1209
 HV1209  NGVD 29 (11/26/84)   48.835  (m)          160.22   (f) ADJUSTED    2 0
 HV1209
 HV1209.Superseded values are not recommended for survey control.
 HV1209
 HV1209.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1209.See file dsdata.pdf to determine how the superseded data were derived.
 HV1209
 HV1209_MARKER: DB = BENCH MARK DISK
 HV1209_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1209_SP_SET: CHURCH BUILDING
 HV1209_STAMPING: D 84 1942
 HV1209_MARK LOGO: CGS
 HV1209_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1209
 HV1209  HISTORY     - Date     Condition        Report By
 HV1209  HISTORY     - 1942     MONUMENTED       CGS
 HV1209  HISTORY     - 1958     GOOD             CGS
 HV1209  HISTORY     - 1978     GOOD             NGS
 HV1209
 HV1209                          STATION DESCRIPTION
 HV1209
 HV1209'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1209'1.8 MI W FROM LARGO.
 HV1209'ABOUT 1.8 MILES WEST ALONG STATE HIGHWAY 214 FROM THE INTERSECTION
 HV1209'OF STATE HIGHWAY 202 AT LARGO, PRINCE GEORGES COUNTY, AT THE
 HV1209'NORTHEAST CORNER OF A RED BRICK CHURCH SOUTH OF THE HIGHWAY,
 HV1209'IN THE NORTH WALL, AND ABOUT 2 FEET HIGHER THAN THE GROUND.
 HV1209'A STANDARD DISK, STAMPED D 84 1942 AND SET VERTICALLY.
 HV1209
 HV1209                          STATION RECOVERY (1978)
 HV1209
 HV1209'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
 HV1209'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1153 ***********************************************************************
 HV1153  DESIGNATION -  D 85
 HV1153  PID         -  HV1153
 HV1153  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1153  COUNTRY     -  US
 HV1153  USGS QUAD   -  BRISTOL (2016)
 HV1153
 HV1153                         *CURRENT SURVEY CONTROL
 HV1153  ______________________________________________________________________
 HV1153* NAD 83(1986) POSITION- 38 52 17.     (N) 076 44 54.     (W)   SCALED
 HV1153* NAVD 88 ORTHO HEIGHT -    20.841 (meters)       68.38  (feet) ADJUSTED
 HV1153  ______________________________________________________________________
 HV1153  GEOID HEIGHT    -        -32.818 (meters)                     GEOID18
 HV1153  DYNAMIC HEIGHT  -         20.829 (meters)       68.34  (feet) COMP
 HV1153  MODELED GRAVITY -    980,076.0   (mgal)                       NAVD 88
 HV1153
 HV1153  VERT ORDER      -  SECOND    CLASS 0
 HV1153
 HV1153.The horizontal coordinates were scaled from a map and have
 HV1153.an estimated accuracy of +/- 6 seconds.
 HV1153
 HV1153.The orthometric height was determined by differential leveling and
 HV1153.adjusted by the NATIONAL GEODETIC SURVEY
 HV1153.in June 1991.
 HV1153
 HV1153.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1153.GEOID18 height accuracy estimate available here.
 HV1153
 HV1153.Click photographs - Photos may exist for this station.
 HV1153
 HV1153.The dynamic height is computed by dividing the NAVD 88
 HV1153.geopotential number by the normal gravity value computed on the
 HV1153.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1153.degrees latitude (g = 980.6199 gals.).
 HV1153
 HV1153.The modeled gravity was interpolated from observed gravity values.
 HV1153
 HV1153;                    North         East    Units  Estimated Accuracy
 HV1153;SPC MD       -   133,760.      421,840.      MT  (+/- 180 meters Scaled)
 HV1153
 HV1153_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ483039(NAD 83)
 HV1153
 HV1153                          SUPERSEDED SURVEY CONTROL
 HV1153
 HV1153  NGVD 29 (11/26/84)   21.106  (m)           69.25   (f) ADJUSTED    2 0
 HV1153
 HV1153.Superseded values are not recommended for survey control.
 HV1153
 HV1153.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1153.See file dsdata.pdf to determine how the superseded data were derived.
 HV1153
 HV1153_MARKER: DB = BENCH MARK DISK
 HV1153_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1153_SP_SET: BRIDGE
 HV1153_STAMPING: D 85 1942
 HV1153_MARK LOGO: CGS
 HV1153_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1153
 HV1153  HISTORY     - Date     Condition        Report By
 HV1153  HISTORY     - 1942     MONUMENTED       CGS
 HV1153
 HV1153                          STATION DESCRIPTION
 HV1153
 HV1153'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1153'AT LEELAND.
 HV1153'AT LEELAND, PRINCE GEORGES COUNTY, ON THE PENNSYLVANIA RAILROAD,
 HV1153'SOUTH OF A CROSSING, 110 FEET SOUTH OF THE OLD POST OFFICE SITE,
 HV1153'IN THE TOP OF THE SOUTHEAST WING WALL OF A CONCRETE BRIDGE, 12
 HV1153'FEET EAST OF THE TRACK, AND ABOUT LEVEL WITH THE TRACK.  A
 HV1153'STANDARD DISK, STAMPED D 85 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2552 ***********************************************************************
 JV2552  DESIGNATION -  D 87
 JV2552  PID         -  JV2552
 JV2552  STATE/COUNTY-  MD/HOWARD
 JV2552  COUNTRY     -  US
 JV2552  USGS QUAD   -  DAMASCUS (2016)
 JV2552
 JV2552                         *CURRENT SURVEY CONTROL
 JV2552  ______________________________________________________________________
 JV2552* NAD 83(2011) POSITION- 39 19 04.22439(N) 077 09 26.98227(W)   ADJUSTED
 JV2552* NAD 83(2011) ELLIP HT-   205.731 (meters)        (06/27/12)   ADJUSTED
 JV2552* NAD 83(2011) EPOCH   -  2010.00
 JV2552* NAVD 88 ORTHO HEIGHT -   237.599 (meters)      779.52  (feet) ADJUSTED
 JV2552  ______________________________________________________________________
 JV2552  GEOID HEIGHT    -        -31.851 (meters)                     GEOID18
 JV2552  NAD 83(2011) X  -  1,098,290.624 (meters)                     COMP
 JV2552  NAD 83(2011) Y  - -4,817,598.709 (meters)                     COMP
 JV2552  NAD 83(2011) Z  -  4,019,808.123 (meters)                     COMP
 JV2552  LAPLACE CORR    -          1.58  (seconds)                    DEFLEC18
 JV2552  DYNAMIC HEIGHT  -        237.476 (meters)      779.12  (feet) COMP
 JV2552  MODELED GRAVITY -    980,101.0   (mgal)                       NAVD 88
 JV2552
 JV2552  VERT ORDER      -  SECOND    CLASS I
 JV2552
 JV2552  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV2552  Standards:
 JV2552         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV2552            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV2552  -------------------------------------------------------------------
 JV2552  NETWORK    1.56   3.45           0.61   0.62   1.76      0.47354742
 JV2552  -------------------------------------------------------------------
 JV2552  Click here for local accuracies and other accuracy information.
 JV2552
 JV2552.The horizontal coordinates were established by GPS observations
 JV2552.and adjusted by the National Geodetic Survey in June 2012.
 JV2552
 JV2552.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV2552.been affixed to the stable North American tectonic plate. See 
 JV2552.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV2552
 JV2552.The horizontal coordinates are valid at the epoch date displayed above
 JV2552.which is a decimal equivalence of Year/Month/Day.
 JV2552
 JV2552.The orthometric height was determined by differential leveling and
 JV2552.adjusted by the NATIONAL GEODETIC SURVEY
 JV2552.in June 1991.
 JV2552
 JV2552.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2552.GEOID18 height accuracy estimate available here.
 JV2552
 JV2552.Click photographs - Photos may exist for this station.
 JV2552
 JV2552.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV2552
 JV2552.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2552
 JV2552.The ellipsoidal height was determined by GPS observations
 JV2552.and is referenced to NAD 83.
 JV2552
 JV2552.The dynamic height is computed by dividing the NAVD 88
 JV2552.geopotential number by the normal gravity value computed on the
 JV2552.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2552.degrees latitude (g = 980.6199 gals.).
 JV2552
 JV2552.The modeled gravity was interpolated from observed gravity values.
 JV2552
 JV2552. The following values were computed from the NAD 83(2011) position.
 JV2552
 JV2552;                    North         East     Units Scale Factor Converg.
 JV2552;SPC MD       -   183,302.766   386,418.302   MT  0.99997955   -0 05 55.9
 JV2552;SPC MD       -   601,385.82  1,267,774.05   sFT  0.99997955   -0 05 55.9
 JV2552;UTM  18      - 4,354,267.996   314,008.670   MT  1.00002594   -1 22 02.7
 JV2552
 JV2552!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2552!SPC MD       -   0.99996772  x   0.99997955  =   0.99994727
 JV2552!UTM  18      -   0.99996772  x   1.00002594  =   0.99999366
 JV2552
 JV2552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1400854267(NAD 83)
 JV2552
 JV2552                          SUPERSEDED SURVEY CONTROL
 JV2552
 JV2552  NAD 83(2007)-  39 19 04.22457(N)    077 09 26.98307(W) AD(2002.00) 0
 JV2552  ELLIP H (02/10/07)  205.777  (m)                       GP(2002.00)    
 JV2552  ELLIP H (08/30/02)  205.792  (m)                       GP(       ) 4 2
 JV2552  NAD 83(1993)-  39 19 04.22562(N)    077 09 26.98316(W) AD(       ) 1
 JV2552  ELLIP H (11/14/94)  205.746  (m)                       GP(       ) 4 2
 JV2552  NAD 83(1991)-  39 19 04.22405(N)    077 09 26.98241(W) AD(       ) 1
 JV2552  ELLIP H (01/27/92)  205.699  (m)                       GP(       ) 4 1
 JV2552  NAD 83(1986)-  39 19 04.22440(N)    077 09 26.99331(W) AD(       ) 1
 JV2552  NGVD 29             237.81   (m)          780.2    (f) LEVELING    3  
 JV2552  NGVD 29 (11/26/84)  237.805  (m)          780.20   (f) ADJUSTED    2 0
 JV2552
 JV2552.Superseded values are not recommended for survey control.
 JV2552
 JV2552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2552.See file dsdata.pdf to determine how the superseded data were derived.
 JV2552
 JV2552_MARKER: DB = BENCH MARK DISK
 JV2552_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2552_STAMPING: D 87 1942
 JV2552_MARK LOGO: CGS
 JV2552_PROJECTION: PROJECTING 5 CENTIMETERS
 JV2552_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV2552_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2552+STABILITY: SURFACE MOTION
 JV2552_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2552+SATELLITE: SATELLITE OBSERVATIONS - July 09, 2019
 JV2552
 JV2552  HISTORY     - Date     Condition        Report By
 JV2552  HISTORY     - 1942     MONUMENTED       CGS
 JV2552  HISTORY     - 1985     GOOD             LOCSUR
 JV2552  HISTORY     - 19891010 GOOD             WSSC
 JV2552  HISTORY     - 20070530 GOOD             MDSHA
 JV2552  HISTORY     - 20070627 GOOD             MDSHA
 JV2552  HISTORY     - 20090226 GOOD             MDSHA
 JV2552  HISTORY     - 20170609 GOOD             NGS
 JV2552  HISTORY     - 20170808 GOOD             NGS
 JV2552  HISTORY     - 20190709 GOOD             NGS
 JV2552
 JV2552                          STATION DESCRIPTION
 JV2552
 JV2552'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2552'1.2 MI S FROM LONG CORNER.
 JV2552'1.2 MILES SOUTH ALONG A MACADAM ROAD FROM THE PUBLIC SCHOOL AT
 JV2552'LONG CORNER, HOWARD COUNTY, AT HOWARD CHAPEL, IN THE SOUTHEAST
 JV2552'CORNER OF THE CHURCHYARD, 37 FEET SOUTHEAST OF THE SOUTH CORNER
 JV2552'OF THE CHURCH, 20.2 FEET WEST OF THE IRON FENCE POST AT THE
 JV2552'NORTHEAST CORNER OF THE CEMETERY, 1 FOOT NORTH OF THE WOVEN-WIRE
 JV2552'FENCE, AND 6.5 FEET SOUTH OF A SPRUCE SHRUB.  A STANDARD DISK,
 JV2552'STAMPED D 87 1942 AND SET IN THE TOP OF A CONCRETE POST.
 JV2552
 JV2552                          STATION RECOVERY (1985)
 JV2552
 JV2552'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1985
 JV2552'RECOVERED IN GOOD CONDITION.
 JV2552
 JV2552                          STATION RECOVERY (1989)
 JV2552
 JV2552'RECOVERY NOTE BY WASH SUBURB SAN COMM 1989
 JV2552'THE STATION IS LOCATED ABOUT 1.9 KM (1.2 MI) SOUTH OF LONG CORNER, 4.4
 JV2552'KM (2.7 MI) NE OF DAMASCUS AND 2.2 KM (1.4 MI) NW OF MULLINIX. TO
 JV2552'REACH THE STATION FROM THE INTERSECTION OF STATE ROAD RTE 108
 JV2552'(DAMACUS RD) IN DAMASCUS GO EAST   KMON RTE 108 TO LONG CORNER RD,
 JV2552'TURN LEFT AND GO NORTH   KMTO THE STATION ON THE LEFT.  THE STATION
 JV2552'IS IN THE EAST CORNER OF THE GRAVEYARD SOUTH OF HOWARD CAPEL
 JV2552'METHODIST CHURCH. OWNERSHIP--HOWRD CHAPEL METHODIST CHURCH. THE
 JV2552'STATION MARK IS A STANDARD BENCH MARK DISK STAMPED D 87 1942 SET IN
 JV2552'THE TOP OF A CONCRETE POST 0.2 M (0.7 FT) IN DIAMETER SET.
 JV2552'NO REFERENCES WERE ESTABLISHED AT THIS TIME.   NO
 JV2552'STATIONS SERVE AS AZIMUTH MARKS FOR THIS STATION AT THIS TIME.
 JV2552
 JV2552                          STATION RECOVERY (2007)
 JV2552
 JV2552'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV2552'THE STATION IS LOCATED ABOUT 2.3 MI (3.7 KM) EAST-NORTHEAST OF
 JV2552'FRIENDSHIP, 2.2 MI (3.5 KM) EAST OF CLAGGETTSVILLE AND 1.1 MI (1.8 KM)
 JV2552'SOUTH OF LONG CORNER.
 JV2552'
 JV2552'TO REACH FROM THE INTERSTATE HIGHWAY 70 BRIDGE OVER STATE HIGHWAY 27
 JV2552'IN MOUNT AIRY, GO SOUTH ON STATE HIGHWAY 27 FOR 0.65 MI (1.0 KM) TO A
 JV2552'SIDE ROAD ON THE LEFT.  TURN LEFT AND GO EAST ON PENN SHOP ROAD
 JV2552'LEADING FOR 1.5 MI (2.4 KM) TO A Y-INTERSECTION.  TAKE THE RIGHT FORK
 JV2552'AND GO SOUTH ON LONG CORNER ROAD FOR 1.45 MI (2.3 KM) TO THE HOWARD
 JV2552'CHAPEL RIDGEVILLE UNITED METHODIST CHURCH AND THE STATION ON THE
 JV2552'RIGHT.
 JV2552'
 JV2552'IT IS 33 FT (10.1 M) WEST OF THE CENTERLINE OF THE ROAD, 29.5 FT (9.0
 JV2552'M) NORTHWEST OF P AND E SYSTEM POWER POLE NUMBER F43932, 37 FT (11.3
 JV2552'M) SOUTHEAST OF THE SOUTH CORNER OF THE CHURCH, 1.5 FT (0.5 M)
 JV2552'SOUTHEAST OF A FIBERGLASS WITNESS POST AND SET IN THE TOP OF A 6-IN
 JV2552'(15 CM) SQUARE CONCRETE POST.
 JV2552
 JV2552                          STATION RECOVERY (2007)
 JV2552
 JV2552'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 JV2552'RECOVERED IN GOOD CONDITION.
 JV2552
 JV2552                          STATION RECOVERY (2009)
 JV2552
 JV2552'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV2552'RECOVERED AS DESCRIBED. THE MARK NO LONGER SUITABLE FOR GPS. IT IS NOW
 JV2552'UNDER A PEAR TREE THAT HAS GROWN.
 JV2552
 JV2552                          STATION RECOVERY (2017)
 JV2552
 JV2552'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (LHB)
 JV2552'THE PEAR TREE IS GONE.
 JV2552
 JV2552                          STATION RECOVERY (2017)
 JV2552
 JV2552'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV2552'RECOVERED IN GOOD CONDITION.
 JV2552
 JV2552                          STATION RECOVERY (2019)
 JV2552
 JV2552'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV2552'THE STATION IS 28.5 FT (8.7 M) NORTH-NORTHWEST OF UTILITY POLE NUMBER
 JV2552'P43932, 33 FT (10.1 M) WEST OF THE CENTERLINE OF LONG CORNER ROAD, 38
 JV2552'FT (11.6 M) SOUTH OF THE SOUTHWEST CORNER OF THE BOTTOM STEP TO
 JV2552'ENTRANCE TO THE CHURCH AND 19 FT (5.8 M) EAST OF THE EAST-SOUTHEAST
 JV2552'BRICK COLUMN FOR THE HOWARD CHAPEL CEMETERY SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2376 ***********************************************************************
 JV2376  DESIGNATION -  D 88
 JV2376  PID         -  JV2376
 JV2376  STATE/COUNTY-  MD/FREDERICK
 JV2376  COUNTRY     -  US
 JV2376  USGS QUAD   -  MIDDLETOWN (2016)
 JV2376
 JV2376                         *CURRENT SURVEY CONTROL
 JV2376  ______________________________________________________________________
 JV2376* NAD 83(1986) POSITION- 39 25 28.     (N) 077 30 04.     (W)   SCALED
 JV2376* NAVD 88 ORTHO HEIGHT -   259.849 (meters)      852.52  (feet) ADJUSTED
 JV2376  ______________________________________________________________________
 JV2376  GEOID HEIGHT    -        -32.876 (meters)                     GEOID18
 JV2376  DYNAMIC HEIGHT  -        259.707 (meters)      852.06  (feet) COMP
 JV2376  MODELED GRAVITY -    980,073.8   (mgal)                       NAVD 88
 JV2376
 JV2376  VERT ORDER      -  SECOND    CLASS 0
 JV2376
 JV2376.The horizontal coordinates were scaled from a map and have
 JV2376.an estimated accuracy of +/- 6 seconds.
 JV2376
 JV2376.The orthometric height was determined by differential leveling and
 JV2376.adjusted by the NATIONAL GEODETIC SURVEY
 JV2376.in June 1991.
 JV2376
 JV2376.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2376.GEOID18 height accuracy estimate available here.
 JV2376
 JV2376.Click photographs - Photos may exist for this station.
 JV2376
 JV2376.The dynamic height is computed by dividing the NAVD 88
 JV2376.geopotential number by the normal gravity value computed on the
 JV2376.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2376.degrees latitude (g = 980.6199 gals.).
 JV2376
 JV2376.The modeled gravity was interpolated from observed gravity values.
 JV2376
 JV2376;                    North         East    Units  Estimated Accuracy
 JV2376;SPC MD       -   195,250.      356,850.      MT  (+/- 180 meters Scaled)
 JV2376
 JV2376_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ847668(NAD 83)
 JV2376
 JV2376                          SUPERSEDED SURVEY CONTROL
 JV2376
 JV2376  NGVD 29 (11/26/84)  260.068  (m)          853.24   (f) ADJUSTED    2 0
 JV2376
 JV2376.Superseded values are not recommended for survey control.
 JV2376
 JV2376.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2376.See file dsdata.pdf to determine how the superseded data were derived.
 JV2376
 JV2376_MARKER: DB = BENCH MARK DISK
 JV2376_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2376_STAMPING: D 88 1942
 JV2376_MARK LOGO: CGS
 JV2376_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2376+STABILITY: SURFACE MOTION
 JV2376
 JV2376  HISTORY     - Date     Condition        Report By
 JV2376  HISTORY     - 1942     MONUMENTED       CGS
 JV2376  HISTORY     - 20071228 MARK NOT FOUND   GEOCAC
 JV2376
 JV2376                          STATION DESCRIPTION
 JV2376
 JV2376'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2376'4.6 MI W FROM FREDERICK.
 JV2376'4.6 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE Y-JUNCTION U.S.
 JV2376'HIGHWAY 340 AT FREDERICK, FREDERICK COUNTY, 40 FEET EAST OF
 JV2376'HIGHWAY MARKER 39, 81.7 FEET SOUTHWEST OF THE SOUTHWEST CORNER
 JV2376'OF A TWO-STORY WHITE SHINGLE HOUSE, 79 FEET WEST OF THE CENTER
 JV2376'LINE OF THE DRIVEWAY, IN THE SOUTHWEST CORNER OF THE YARD, 31.4
 JV2376'FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, AND 2 FEET EAST OF
 JV2376'A WHITE WOODEN WITNESS POST.  A STANDARD DISK, STAMPED D 88 1942
 JV2376'AND SET IN THE TOP OF A CONCRETE POST.
 JV2376
 JV2376                          STATION RECOVERY (2007)
 JV2376
 JV2376'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV2376'THE WITNESS POST IS GONE. THE REST OF THE AREA SEEMS MOSTLY
 JV2376'UNDISTURBED, ALTHOUGH THE HIGHWAY HAS BEEN WIDENED AND LAT. AND LONG.
 JV2376'PLACE THE MARK ON THE PAVED ROAD SHOULDER. SEEMS LIKE THIS ONE OUGHT
 JV2376'TO STILL BE THERE UNDER THE LAWN BASED ON OTHER MEASUREMENTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2979 ***********************************************************************
 JV2979  DESIGNATION -  D 89
 JV2979  PID         -  JV2979
 JV2979  STATE/COUNTY-  MD/FREDERICK
 JV2979  COUNTRY     -  US
 JV2979  USGS QUAD   -  MYERSVILLE (2016)
 JV2979
 JV2979                         *CURRENT SURVEY CONTROL
 JV2979  ______________________________________________________________________
 JV2979* NAD 83(1986) POSITION- 39 30 01.     (N) 077 34 02.     (W)   SCALED
 JV2979* NAVD 88 ORTHO HEIGHT -   202.137 (meters)      663.18  (feet) ADJUSTED
 JV2979  ______________________________________________________________________
 JV2979  GEOID HEIGHT    -        -33.238 (meters)                     GEOID18
 JV2979  DYNAMIC HEIGHT  -        202.024 (meters)      662.81  (feet) COMP
 JV2979  MODELED GRAVITY -    980,062.2   (mgal)                       NAVD 88
 JV2979
 JV2979  VERT ORDER      -  SECOND    CLASS 0
 JV2979
 JV2979.The horizontal coordinates were scaled from a map and have
 JV2979.an estimated accuracy of +/- 6 seconds.
 JV2979
 JV2979.The orthometric height was determined by differential leveling and
 JV2979.adjusted by the NATIONAL GEODETIC SURVEY
 JV2979.in June 1991.
 JV2979
 JV2979.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2979.GEOID18 height accuracy estimate available here.
 JV2979
 JV2979.Click photographs - Photos may exist for this station.
 JV2979
 JV2979.The dynamic height is computed by dividing the NAVD 88
 JV2979.geopotential number by the normal gravity value computed on the
 JV2979.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2979.degrees latitude (g = 980.6199 gals.).
 JV2979
 JV2979.The modeled gravity was interpolated from observed gravity values.
 JV2979
 JV2979;                    North         East    Units  Estimated Accuracy
 JV2979;SPC MD       -   203,700.      351,210.      MT  (+/- 180 meters Scaled)
 JV2979
 JV2979_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ792754(NAD 83)
 JV2979
 JV2979                          SUPERSEDED SURVEY CONTROL
 JV2979
 JV2979  NGVD 29 (11/26/84)  202.349  (m)          663.87   (f) ADJUSTED    2 0
 JV2979
 JV2979.Superseded values are not recommended for survey control.
 JV2979
 JV2979.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2979.See file dsdata.pdf to determine how the superseded data were derived.
 JV2979
 JV2979_MARKER: DB = BENCH MARK DISK
 JV2979_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2979_STAMPING: D 89 1942
 JV2979_MARK LOGO: CGS
 JV2979_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2979+STABILITY: SURFACE MOTION
 JV2979
 JV2979  HISTORY     - Date     Condition        Report By
 JV2979  HISTORY     - 1942     MONUMENTED       CGS
 JV2979  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV2979
 JV2979                          STATION DESCRIPTION
 JV2979
 JV2979'DESCRIBED BY US GEOLOGICAL SURVEY 1953
 JV2979'0.5 MI S FROM MYERSVILLE.
 JV2979'THIS MARK IS ABOUT 0.5 MILE SOUTH ALONG HIGHWAY 17 FROM THE POST
 JV2979'OFFICE AT MYERSVILLE, FREDERICK COUNTY, 23.5 FEET EAST OF THE CENTER
 JV2979'LINE OF THE HIGHWAY, 10.0 FEET EAST OF THE CENTER LINE OF THE RAILROAD
 JV2979'TRACK, 4.0 FEET WEST OF A WIRE FENCE WHICH RUNS PARALLEL WITH THE
 JV2979'HIGHWAY, 78.5 FEET SOUTHEAST AND ACROSS THE HIGHWAY FROM HIGHWAY
 JV2979'MARKER NUMBER 184, ABOUT LEVEL WITH THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0052 ***********************************************************************
 HV0052  DESIGNATION -  D 9
 HV0052  PID         -  HV0052
 HV0052  STATE/COUNTY-  MD/QUEEN ANNES
 HV0052  COUNTRY     -  US
 HV0052  USGS QUAD   -  WYE MILLS (2016)
 HV0052
 HV0052                         *CURRENT SURVEY CONTROL
 HV0052  ______________________________________________________________________
 HV0052* NAD 83(1986) POSITION- 38 56 18.     (N) 076 02 07.     (W)   SCALED
 HV0052* NAVD 88 ORTHO HEIGHT -    18.856 (meters)       61.86  (feet) ADJUSTED
 HV0052  ______________________________________________________________________
 HV0052  GEOID HEIGHT    -        -34.302 (meters)                     GEOID18
 HV0052  DYNAMIC HEIGHT  -         18.845 (meters)       61.83  (feet) COMP
 HV0052  MODELED GRAVITY -    980,061.5   (mgal)                       NAVD 88
 HV0052
 HV0052  VERT ORDER      -  SECOND    CLASS 0
 HV0052
 HV0052.The horizontal coordinates were scaled from a map and have
 HV0052.an estimated accuracy of +/- 6 seconds.
 HV0052
 HV0052.The orthometric height was determined by differential leveling and
 HV0052.adjusted by the NATIONAL GEODETIC SURVEY
 HV0052.in June 1991.
 HV0052
 HV0052.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0052.GEOID18 height accuracy estimate available here.
 HV0052
 HV0052.Click photographs - Photos may exist for this station.
 HV0052
 HV0052.The dynamic height is computed by dividing the NAVD 88
 HV0052.geopotential number by the normal gravity value computed on the
 HV0052.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0052.degrees latitude (g = 980.6199 gals.).
 HV0052
 HV0052.The modeled gravity was interpolated from observed gravity values.
 HV0052
 HV0052;                    North         East    Units  Estimated Accuracy
 HV0052;SPC MD       -   141,600.      483,640.      MT  (+/- 180 meters Scaled)
 HV0052
 HV0052_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ102104(NAD 83)
 HV0052
 HV0052                          SUPERSEDED SURVEY CONTROL
 HV0052
 HV0052  NGVD 29 (11/26/84)   19.084  (m)           62.61   (f) ADJUSTED    2 0
 HV0052
 HV0052.Superseded values are not recommended for survey control.
 HV0052
 HV0052.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0052.See file dsdata.pdf to determine how the superseded data were derived.
 HV0052
 HV0052_MARKER: DB = BENCH MARK DISK
 HV0052_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0052_STAMPING: D 9 1935
 HV0052_MARK LOGO: CGS
 HV0052_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0052+STABILITY: SURFACE MOTION
 HV0052
 HV0052  HISTORY     - Date     Condition        Report By
 HV0052  HISTORY     - 1935     MONUMENTED       CGS
 HV0052  HISTORY     - 1942     GOOD             CGS
 HV0052  HISTORY     - 20010324 MARK NOT FOUND   USPSQD
 HV0052
 HV0052                          STATION DESCRIPTION
 HV0052
 HV0052'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HV0052'0.9 MI W FROM WILLOUGHBY.
 HV0052'0.9 MILE WEST ALONG THE BALTIMORE AND EASTERN RAILROAD FROM THE
 HV0052'STATION AT WILLOUGHBY, QUEEN ANNES COUNTY, AT A FARM-ROAD
 HV0052'CROSSING, 28 FEET SOUTH OF THE SOUTH RAIL, 15 FEET EAST OF THE
 HV0052'CENTERLINE OF THE ROAD, 15 FEET NORTHEAST OF AN 8-INCH PINE
 HV0052'TREE, AND 6 FEET SOUTHEAST OF A FENCE CORNER.  A STANDARD DISK,
 HV0052'STAMPED D 9 1935 AND SET IN THE TOP OF A CONCRETE POST.
 HV0052
 HV0052                          STATION RECOVERY (1942)
 HV0052
 HV0052'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0052'RECOVERED IN GOOD CONDITION.
 HV0052
 HV0052                          STATION RECOVERY (2001)
 HV0052
 HV0052'RECOVERY NOTE BY US POWER SQUADRON 2001 (KNP)
 HV0052'WHILE SEARCHING FOR MARK THE FARMER OF THE PROPERTY CAME BY AND
 HV0052'REPORTED THAT THE MARK WAS PLOWED UP ABOUT 15 YEARS AGO AND SHOULD BE
 HV0052'CONSIDERED DISTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1882 ***********************************************************************
 JV1882  DESIGNATION -  D 90
 JV1882  PID         -  JV1882
 JV1882  STATE/COUNTY-  MD/FREDERICK
 JV1882  COUNTRY     -  US
 JV1882  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV1882
 JV1882                         *CURRENT SURVEY CONTROL
 JV1882  ______________________________________________________________________
 JV1882* NAD 83(1986) POSITION- 39 32 06.     (N) 077 24 49.     (W)   SCALED
 JV1882* NAVD 88 ORTHO HEIGHT -   115.736 (meters)      379.71  (feet) ADJUSTED
 JV1882  ______________________________________________________________________
 JV1882  GEOID HEIGHT    -        -32.974 (meters)                     GEOID18
 JV1882  DYNAMIC HEIGHT  -        115.674 (meters)      379.51  (feet) COMP
 JV1882  MODELED GRAVITY -    980,092.8   (mgal)                       NAVD 88
 JV1882
 JV1882  VERT ORDER      -  SECOND    CLASS I
 JV1882
 JV1882.The horizontal coordinates were scaled from a map and have
 JV1882.an estimated accuracy of +/- 6 seconds.
 JV1882
 JV1882.The orthometric height was determined by differential leveling and
 JV1882.adjusted by the NATIONAL GEODETIC SURVEY
 JV1882.in June 1991.
 JV1882
 JV1882.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1882.GEOID18 height accuracy estimate available here.
 JV1882
 JV1882.Click photographs - Photos may exist for this station.
 JV1882
 JV1882.The dynamic height is computed by dividing the NAVD 88
 JV1882.geopotential number by the normal gravity value computed on the
 JV1882.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1882.degrees latitude (g = 980.6199 gals.).
 JV1882
 JV1882.The modeled gravity was interpolated from observed gravity values.
 JV1882
 JV1882;                    North         East    Units  Estimated Accuracy
 JV1882;SPC MD       -   207,480.      364,440.      MT  (+/- 180 meters Scaled)
 JV1882
 JV1882_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ925789(NAD 83)
 JV1882
 JV1882                          SUPERSEDED SURVEY CONTROL
 JV1882
 JV1882  NGVD 29 (11/26/84)  115.944  (m)          380.39   (f) ADJUSTED    2 0
 JV1882
 JV1882.Superseded values are not recommended for survey control.
 JV1882
 JV1882.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1882.See file dsdata.pdf to determine how the superseded data were derived.
 JV1882
 JV1882_MARKER: DB = BENCH MARK DISK
 JV1882_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JV1882_SP_SET: OVERPASS RETAINING WALL
 JV1882_STAMPING: D 90 1942
 JV1882_MARK LOGO: CGS
 JV1882_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1882_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1882_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1882+SATELLITE: SATELLITE OBSERVATIONS - February 25, 2008
 JV1882
 JV1882  HISTORY     - Date     Condition        Report By
 JV1882  HISTORY     - 1942     MONUMENTED       CGS
 JV1882  HISTORY     - 19970811 MARK NOT FOUND   USPSQD
 JV1882  HISTORY     - 20011206 GOOD             MDSHA
 JV1882  HISTORY     - 20080225 GOOD             GEOCAC
 JV1882
 JV1882                          STATION DESCRIPTION
 JV1882
 JV1882'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1882'AT LEWISTOWN.
 JV1882'AT LEWISTOWN, FREDERICK COUNTY, ON U.S. HIGHWAY 15, AT THE
 JV1882'RAILROAD CROSSING, 28 FEET NORTHEAST OF THE CENTER LINE OF THE
 JV1882'HIGHWAY, 5.7 FEET SOUTHEAST OF THE CENTER LINE OF THE TRACK, 13.8
 JV1882'FEET NORTH OF THE RAILROAD-CROSSING SIGN, 39 FEET WEST OF POLE 3,
 JV1882'AT AN OVERPASS, IN THE TOP OF THE SOUTHEAST END OF THE SOUTH
 JV1882'RETAINING WALL, AND ABOUT 6 INCHES LOWER THAN THE TRACK.  A STANDARD
 JV1882'DISK, STAMPED D 90 1942.
 JV1882
 JV1882                          STATION RECOVERY (1997)
 JV1882
 JV1882'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV1882'MARK NOT FOUND.
 JV1882
 JV1882                          STATION RECOVERY (2001)
 JV1882
 JV1882'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1882'THE STATION WAS RECOVERED IN GOOD CONDITION. THE RAILROAD TRACKS AND
 JV1882'BRIDGE OVER A SMALL CREEK HAVE BEEN REMOVED.  THE STATION IS LOCATED
 JV1882'ALONG HESSONG BRIDGE ROAD IN LEWISTOWN, JUST SOUTHEAST OF THE
 JV1882'INTERSECTION OF POWELL ROAD, 28 FT (8.5 M) NORTHEAST OF THE CENTER OF
 JV1882'HESSONG BRIDGE ROAD, 39 FT (11.9 M) WEST OF POLE NUMBER 3, 13.8 FT
 JV1882'(4.2 M) NORTH OF THE RAILROAD CROSSING SIGN, SET IN THE TOP OF THE
 JV1882'SOUTHEAST END OF THE SOUTH RETAINING WALL, AND ABOUT 0.5 FT (0.2 M)
 JV1882'LOWER THAN THE ROAD.
 JV1882
 JV1882                          STATION RECOVERY (2008)
 JV1882
 JV1882'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV1882'MARK IS 75' SE OF POLE F4622.  NO RR CROSSING SIGN WAS OBSERVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2367 ***********************************************************************
 JV2367  DESIGNATION -  D 91
 JV2367  PID         -  JV2367
 JV2367  STATE/COUNTY-  MD/MONTGOMERY
 JV2367  COUNTRY     -  US
 JV2367  USGS QUAD   -  URBANA (2016)
 JV2367
 JV2367                         *CURRENT SURVEY CONTROL
 JV2367  ______________________________________________________________________
 JV2367* NAD 83(1986) POSITION- 39 16 17.     (N) 077 20 21.     (W)   SCALED
 JV2367* NAVD 88 ORTHO HEIGHT -   119.820 (meters)      393.11  (feet) ADJUSTED
 JV2367  ______________________________________________________________________
 JV2367  GEOID HEIGHT    -        -32.156 (meters)                     GEOID18
 JV2367  DYNAMIC HEIGHT  -        119.756 (meters)      392.90  (feet) COMP
 JV2367  MODELED GRAVITY -    980,092.9   (mgal)                       NAVD 88
 JV2367
 JV2367  VERT ORDER      -  SECOND    CLASS I
 JV2367
 JV2367.The horizontal coordinates were scaled from a map and have
 JV2367.an estimated accuracy of +/- 6 seconds.
 JV2367
 JV2367.The orthometric height was determined by differential leveling and
 JV2367.adjusted by the NATIONAL GEODETIC SURVEY
 JV2367.in June 1991.
 JV2367
 JV2367.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2367.GEOID18 height accuracy estimate available here.
 JV2367
 JV2367.Click photographs - Photos may exist for this station.
 JV2367
 JV2367.The dynamic height is computed by dividing the NAVD 88
 JV2367.geopotential number by the normal gravity value computed on the
 JV2367.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2367.degrees latitude (g = 980.6199 gals.).
 JV2367
 JV2367.The modeled gravity was interpolated from observed gravity values.
 JV2367
 JV2367;                    North         East    Units  Estimated Accuracy
 JV2367;SPC MD       -   178,190.      370,730.      MT  (+/- 180 meters Scaled)
 JV2367
 JV2367_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ982495(NAD 83)
 JV2367
 JV2367                          SUPERSEDED SURVEY CONTROL
 JV2367
 JV2367  NGVD 29 (11/26/84)  120.018  (m)          393.76   (f) ADJUSTED    2 0
 JV2367
 JV2367.Superseded values are not recommended for survey control.
 JV2367
 JV2367.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2367.See file dsdata.pdf to determine how the superseded data were derived.
 JV2367
 JV2367_MARKER: DB = BENCH MARK DISK
 JV2367_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2367_STAMPING: D 91 1942
 JV2367_MARK LOGO: CGS
 JV2367_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2367_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2367+STABILITY: SURFACE MOTION
 JV2367_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2367+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2001
 JV2367
 JV2367  HISTORY     - Date     Condition        Report By
 JV2367  HISTORY     - 1942     MONUMENTED       CGS
 JV2367  HISTORY     - 1958     GOOD             CGS
 JV2367  HISTORY     - 20010615 GOOD             MDSHA
 JV2367
 JV2367                          STATION DESCRIPTION
 JV2367
 JV2367'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2367'1.6 MI SW FROM HYATTSTOWN.
 JV2367'ABOUT 1.6 MILES SOUTHWEST ALONG THE HYATTSTOWN-COMUS ROAD FROM
 JV2367'THE POST OFFICE AT HYATTSTOWN, ABOUT 1.1 MILES SOUTHWEST OF THE
 JV2367'NEW U.S. HIGHWAY 240, 0.25 MILE SOUTHWEST OF A BRIDGE OVER A
 JV2367'SMALL CREEK, 26.3 FEET SOUTHEAST OF THE CENTER LINE OF THE ROAD,
 JV2367'14 FEET WEST OF THE WEST ONE OF TWO LARGE BEECH TREES, 13 FEET
 JV2367'EAST OF THE EAST END OF A LARGE PIPE CULVERT UNDER THE ROAD, 2
 JV2367'FEET WEST OF A METAL WITNESS POST, SET IN THE TOP OF A CONCRETE
 JV2367'POST WHICH PROJECTS 4 INCHES ABOVE THE GROUND AND ABOUT 1 FOOT
 JV2367'ABOVE THE LEVEL OF THE ROAD.
 JV2367
 JV2367                          STATION RECOVERY (2001)
 JV2367
 JV2367'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2367'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0780 ***********************************************************************
 JV0780  DESIGNATION -  D 92
 JV0780  PID         -  JV0780
 JV0780  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0780  COUNTRY     -  US
 JV0780  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0780
 JV0780                         *CURRENT SURVEY CONTROL
 JV0780  ______________________________________________________________________
 JV0780* NAD 83(1986) POSITION- 39 21 09.     (N) 076 42 16.     (W)   SCALED
 JV0780* NAVD 88 ORTHO HEIGHT -   135.765 (meters)      445.42  (feet) ADJUSTED
 JV0780  ______________________________________________________________________
 JV0780  GEOID HEIGHT    -        -32.340 (meters)                     GEOID18
 JV0780  DYNAMIC HEIGHT  -        135.695 (meters)      445.19  (feet) COMP
 JV0780  MODELED GRAVITY -    980,104.4   (mgal)                       NAVD 88
 JV0780
 JV0780  VERT ORDER      -  SECOND    CLASS 0
 JV0780
 JV0780.The horizontal coordinates were scaled from a map and have
 JV0780.an estimated accuracy of +/- 6 seconds.
 JV0780
 JV0780.The orthometric height was determined by differential leveling and
 JV0780.adjusted by the NATIONAL GEODETIC SURVEY
 JV0780.in June 1991.
 JV0780
 JV0780.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0780.GEOID18 height accuracy estimate available here.
 JV0780
 JV0780.Click photographs - Photos may exist for this station.
 JV0780
 JV0780.The dynamic height is computed by dividing the NAVD 88
 JV0780.geopotential number by the normal gravity value computed on the
 JV0780.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0780.degrees latitude (g = 980.6199 gals.).
 JV0780
 JV0780.The modeled gravity was interpolated from observed gravity values.
 JV0780
 JV0780;                    North         East    Units  Estimated Accuracy
 JV0780;SPC MD       -   187,180.      425,480.      MT  (+/- 180 meters Scaled)
 JV0780
 JV0780_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ531572(NAD 83)
 JV0780
 JV0780                          SUPERSEDED SURVEY CONTROL
 JV0780
 JV0780  NGVD 29 (11/26/84)  135.987  (m)          446.15   (f) ADJUSTED    2 0
 JV0780
 JV0780.Superseded values are not recommended for survey control.
 JV0780
 JV0780.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0780.See file dsdata.pdf to determine how the superseded data were derived.
 JV0780
 JV0780_MARKER: DB = BENCH MARK DISK
 JV0780_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0780_SP_SET: WATER TOWER
 JV0780_STAMPING: D 92 1942
 JV0780_MARK LOGO: CGS
 JV0780_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0780
 JV0780  HISTORY     - Date     Condition        Report By
 JV0780  HISTORY     - 1942     MONUMENTED       CGS
 JV0780
 JV0780                          STATION DESCRIPTION
 JV0780
 JV0780'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0780'AT MOUNT HOPE RETREAT.
 JV0780'THIS MARK IS AT MOUNT HOPE RETREAT, AT THE RAILROAD CROSSING,
 JV0780'SET IN THE SOUTHEAST CORNER OF THE WATER TOWER, 242.0 FEET SOUTH
 JV0780'OF THE CENTER LINE OF THE HIGHWAY, 11.0 FEET EAST OF THE EAST
 JV0780'TRACK.  SET IN A DRILLED HOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0781 ***********************************************************************
 JV0781  DESIGNATION -  D 92 RESET
 JV0781  PID         -  JV0781
 JV0781  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0781  COUNTRY     -  US
 JV0781  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0781
 JV0781                         *CURRENT SURVEY CONTROL
 JV0781  ______________________________________________________________________
 JV0781* NAD 83(1986) POSITION- 39 21 09.     (N) 076 42 16.     (W)   SCALED
 JV0781* NAVD 88 ORTHO HEIGHT -   135.49  (meters)      444.5   (feet) RESET
 JV0781  ______________________________________________________________________
 JV0781  GEOID HEIGHT    -        -32.340 (meters)                     GEOID18
 JV0781  VERT ORDER      -  THIRD
 JV0781
 JV0781.The horizontal coordinates were scaled from a map and have
 JV0781.an estimated accuracy of +/- 6 seconds.
 JV0781
 JV0781.The orthometric height was computed from unverified reset data.
 JV0781
 JV0781.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0781.GEOID18 height accuracy estimate available here.
 JV0781
 JV0781.Click photographs - Photos may exist for this station.
 JV0781
 JV0781;                    North         East    Units  Estimated Accuracy
 JV0781;SPC MD       -   187,180.      425,480.      MT  (+/- 180 meters Scaled)
 JV0781
 JV0781_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ531572(NAD 83)
 JV0781
 JV0781                          SUPERSEDED SURVEY CONTROL
 JV0781
 JV0781  NGVD 29 (??/??/??)  135.71   (m)          445.2    (f) RESET       3  
 JV0781
 JV0781.Superseded values are not recommended for survey control.
 JV0781
 JV0781.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0781.See file dsdata.pdf to determine how the superseded data were derived.
 JV0781
 JV0781_MARKER: DB = BENCH MARK DISK
 JV0781_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV0781+WITH SETTING: PAVEMENT
 JV0781_SP_SET: COAL CHUTE
 JV0781_STAMPING: D 92 RESET 1951
 JV0781_MARK LOGO: CGS
 JV0781_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0781+STABILITY: SURFACE MOTION
 JV0781
 JV0781  HISTORY     - Date     Condition        Report By
 JV0781  HISTORY     - 1951     MONUMENTED       CGS
 JV0781  HISTORY     - 1967     GOOD             CGS
 JV0781
 JV0781                          STATION DESCRIPTION
 JV0781
 JV0781'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JV0781'AT MOUNT HOPE RETREAT.
 JV0781'MARK WAS RECOVERED ON THE WESTERN MARYLAND RAILWAY, 70 FEET
 JV0781'SOUTH OF THE CENTERLINE OF ROAD LEADING TO WHAT WAS FORMERLY
 JV0781'MOUNT HOPE RETREAT HOUSE, BUT NOW AN ORPHANAGE, AND SET FLUSH
 JV0781'IN A DRILL HOLE IN THE SOUTHWEST CORNER OF A CONCRETE COAL
 JV0781'DUMPING CHUTE ON A RAILROAD SIDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1876 ***********************************************************************
 JV1876  DESIGNATION -  D 93
 JV1876  PID         -  JV1876
 JV1876  STATE/COUNTY-  MD/FREDERICK
 JV1876  COUNTRY     -  US
 JV1876  USGS QUAD   -  UNION BRIDGE (2016)
 JV1876
 JV1876                         *CURRENT SURVEY CONTROL
 JV1876  ______________________________________________________________________
 JV1876* NAD 83(1986) POSITION- 39 31 29.     (N) 077 10 37.     (W)   SCALED
 JV1876* NAVD 88 ORTHO HEIGHT -   155.024 (meters)      508.61  (feet) ADJUSTED
 JV1876  ______________________________________________________________________
 JV1876  GEOID HEIGHT    -        -32.450 (meters)                     GEOID18
 JV1876  DYNAMIC HEIGHT  -        154.943 (meters)      508.34  (feet) COMP
 JV1876  MODELED GRAVITY -    980,098.6   (mgal)                       NAVD 88
 JV1876
 JV1876  VERT ORDER      -  SECOND    CLASS 0
 JV1876
 JV1876.The horizontal coordinates were scaled from a map and have
 JV1876.an estimated accuracy of +/- 6 seconds.
 JV1876
 JV1876.The orthometric height was determined by differential leveling and
 JV1876.adjusted by the NATIONAL GEODETIC SURVEY
 JV1876.in June 1991.
 JV1876
 JV1876.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1876.GEOID18 height accuracy estimate available here.
 JV1876
 JV1876.Click photographs - Photos may exist for this station.
 JV1876
 JV1876.The dynamic height is computed by dividing the NAVD 88
 JV1876.geopotential number by the normal gravity value computed on the
 JV1876.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1876.degrees latitude (g = 980.6199 gals.).
 JV1876
 JV1876.The modeled gravity was interpolated from observed gravity values.
 JV1876
 JV1876;                    North         East    Units  Estimated Accuracy
 JV1876;SPC MD       -   206,270.      384,790.      MT  (+/- 180 meters Scaled)
 JV1876
 JV1876_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ128772(NAD 83)
 JV1876
 JV1876                          SUPERSEDED SURVEY CONTROL
 JV1876
 JV1876  NGVD 29 (11/26/84)  155.231  (m)          509.29   (f) ADJUSTED    2 0
 JV1876
 JV1876.Superseded values are not recommended for survey control.
 JV1876
 JV1876.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1876.See file dsdata.pdf to determine how the superseded data were derived.
 JV1876
 JV1876_MARKER: DB = BENCH MARK DISK
 JV1876_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1876_SP_SET: PORCH
 JV1876_STAMPING: D 93 1942
 JV1876_MARK LOGO: CGS
 JV1876_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1876
 JV1876  HISTORY     - Date     Condition        Report By
 JV1876  HISTORY     - 1942     MONUMENTED       CGS
 JV1876
 JV1876                          STATION DESCRIPTION
 JV1876
 JV1876'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1876'4 MI N FROM UNIONVILLE.
 JV1876'4.0 MILES NORTH ALONG THE UNION BRIDGE ROAD FROM THE COMMUNITY HALL
 JV1876'AT UNIONVILLE, FREDERICK COUNTY, ON THE NORTHWEST SIDE OF AN
 JV1876'ABANDONED CHURCH, IN THE NORTH CORNER OF THE PORCH, 16 FEET
 JV1876'SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, AND 4.3 FEET NORTHWEST
 JV1876'OF THE NORTHWEST SIDE OF THE CHURCH.  A STANDARD DISK, STAMPED
 JV1876'D 93 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2849 ***********************************************************************
 JV2849  DESIGNATION -  D 94
 JV2849  PID         -  JV2849
 JV2849  STATE/COUNTY-  MD/MONTGOMERY
 JV2849  COUNTRY     -  US
 JV2849  USGS QUAD   -  ROCKVILLE (2016)
 JV2849
 JV2849                         *CURRENT SURVEY CONTROL
 JV2849  ______________________________________________________________________
 JV2849* NAD 83(1986) POSITION- 39 02 41.     (N) 077 11 34.     (W)   SCALED
 JV2849* NAVD 88 ORTHO HEIGHT -   119.611 (meters)      392.42  (feet) ADJUSTED
 JV2849  ______________________________________________________________________
 JV2849  GEOID HEIGHT    -        -31.710 (meters)                     GEOID18
 JV2849  DYNAMIC HEIGHT  -        119.550 (meters)      392.22  (feet) COMP
 JV2849  MODELED GRAVITY -    980,108.4   (mgal)                       NAVD 88
 JV2849
 JV2849  VERT ORDER      -  SECOND    CLASS 0
 JV2849
 JV2849.The horizontal coordinates were scaled from a map and have
 JV2849.an estimated accuracy of +/- 6 seconds.
 JV2849
 JV2849.The orthometric height was determined by differential leveling and
 JV2849.adjusted by the NATIONAL GEODETIC SURVEY
 JV2849.in June 1991.
 JV2849
 JV2849.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2849.GEOID18 height accuracy estimate available here.
 JV2849
 JV2849.Click photographs - Photos may exist for this station.
 JV2849
 JV2849.The dynamic height is computed by dividing the NAVD 88
 JV2849.geopotential number by the normal gravity value computed on the
 JV2849.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2849.degrees latitude (g = 980.6199 gals.).
 JV2849
 JV2849.The modeled gravity was interpolated from observed gravity values.
 JV2849
 JV2849;                    North         East    Units  Estimated Accuracy
 JV2849;SPC MD       -   152,990.      383,310.      MT  (+/- 180 meters Scaled)
 JV2849
 JV2849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ102240(NAD 83)
 JV2849
 JV2849                          SUPERSEDED SURVEY CONTROL
 JV2849
 JV2849  NGVD 29 (11/26/84)  119.838  (m)          393.17   (f) ADJUSTED    2 0
 JV2849
 JV2849.Superseded values are not recommended for survey control.
 JV2849
 JV2849.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2849.See file dsdata.pdf to determine how the superseded data were derived.
 JV2849
 JV2849_MARKER: DB = BENCH MARK DISK
 JV2849_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2849_SP_SET: CULVERT
 JV2849_STAMPING: D 94 1944
 JV2849_MARK LOGO: CGS
 JV2849_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2849
 JV2849  HISTORY     - Date     Condition        Report By
 JV2849  HISTORY     - 1944     MONUMENTED       CGS
 JV2849  HISTORY     - 1965     GOOD             WSSC
 JV2849
 JV2849                          STATION DESCRIPTION
 JV2849
 JV2849'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2849'3.4 MI SW FROM ROCKVILLE.
 JV2849'3.45 MI. S.W. ALONG STATE HW. 189 (FALLS ROAD) FROM ITS JUNCTION
 JV2849'WITH STATE HWY. AT ROCKVILLE 0.10 MI. S.W. OF THE JUNCTION OF
 JV2849'STATE HW. 189 AND GLEN ROAD, 250 FT. N.E. OF MARSEILLE DR. IN
 JV2849'THE HEADWALL OF A CONCRETE CULVERT 15 FT. E. OF THE CENTERLINE
 JV2849'OF THE HWY. 18 FT. OF PEPCO POLE 620201 AND LEVEL WITH THE
 JV2849'SURFACE OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0150 ***********************************************************************
 JV0150  DESIGNATION -  D 96
 JV0150  PID         -  JV0150
 JV0150  STATE/COUNTY-  MD/HARFORD
 JV0150  COUNTRY     -  US
 JV0150  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0150
 JV0150                         *CURRENT SURVEY CONTROL
 JV0150  ______________________________________________________________________
 JV0150* NAD 83(1986) POSITION- 39 33 30.     (N) 076 06 10.     (W)   SCALED
 JV0150* NAVD 88 ORTHO HEIGHT -    21.372 (meters)       70.12  (feet) ADJUSTED
 JV0150  ______________________________________________________________________
 JV0150  GEOID HEIGHT    -        -33.111 (meters)                     GEOID18
 JV0150  DYNAMIC HEIGHT  -         21.361 (meters)       70.08  (feet) COMP
 JV0150  MODELED GRAVITY -    980,128.6   (mgal)                       NAVD 88
 JV0150
 JV0150  VERT ORDER      -  SECOND    CLASS 0
 JV0150
 JV0150.The horizontal coordinates were scaled from a map and have
 JV0150.an estimated accuracy of +/- 6 seconds.
 JV0150
 JV0150.The orthometric height was determined by differential leveling and
 JV0150.adjusted by the NATIONAL GEODETIC SURVEY
 JV0150.in June 1991.
 JV0150
 JV0150.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0150.GEOID18 height accuracy estimate available here.
 JV0150
 JV0150.Click photographs - Photos may exist for this station.
 JV0150
 JV0150.The dynamic height is computed by dividing the NAVD 88
 JV0150.geopotential number by the normal gravity value computed on the
 JV0150.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0150.degrees latitude (g = 980.6199 gals.).
 JV0150
 JV0150.The modeled gravity was interpolated from observed gravity values.
 JV0150
 JV0150;                    North         East    Units  Estimated Accuracy
 JV0150;SPC MD       -   210,370.      477,110.      MT  (+/- 180 meters Scaled)
 JV0150
 JV0150_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ052793(NAD 83)
 JV0150
 JV0150                          SUPERSEDED SURVEY CONTROL
 JV0150
 JV0150  NGVD 29 (11/26/84)   21.632  (m)           70.97   (f) ADJUSTED    2 0
 JV0150
 JV0150.Superseded values are not recommended for survey control.
 JV0150
 JV0150.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0150.See file dsdata.pdf to determine how the superseded data were derived.
 JV0150
 JV0150_MARKER: DB = BENCH MARK DISK
 JV0150_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV0150_SP_SET: ABUTMENT
 JV0150_STAMPING: D 96 1959
 JV0150_MARK LOGO: CGS
 JV0150_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0150_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0150+SATELLITE: SATELLITE OBSERVATIONS - October 24, 1989
 JV0150
 JV0150  HISTORY     - Date     Condition        Report By
 JV0150  HISTORY     - 1959     MONUMENTED       CGS
 JV0150  HISTORY     - 1973     GOOD             NGS
 JV0150  HISTORY     - 19891024 GOOD             NGS
 JV0150
 JV0150                          STATION DESCRIPTION
 JV0150
 JV0150'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0150'0.3 MI NW FROM HAVRE DE GRACE.
 JV0150'ABOUT 0.3 MILE NORTHWEST ALONG STATE HIGHWAY 155 FROM ITS
 JV0150'INTERSECTION WITH U.S. HIGHWAY 40 AT HAVRE DE GRACE, AT AN
 JV0150'OVERHEAD BRIDGE OF THE BALTIMORE AND OHIO RAILROAD, SET VERTICALLY
 JV0150'AT THE SOUTHEAST CORNER OF THE STONE ARCHED TYPE PASSAGE WAY,
 JV0150'23 1/2 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY AND 3
 JV0150'FEET ABOVE THE LEVEL OF THE HIGHWAY.  NOTE-- 33 FT. SW OF
 JV0150'CENTERLINE OF HIGHWAY, 13 FT. ABOVE LEVEL OF HIGHWAY.
 JV0150
 JV0150                          STATION RECOVERY (1973)
 JV0150
 JV0150'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973
 JV0150'RECOVERED IN GOOD CONDITION.
 JV0150
 JV0150                          STATION RECOVERY (1989)
 JV0150
 JV0150'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0150'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  0.6 KM
 JV0150'(0.35 MI) NORTHERLY ALONG STATE HIGHWAY 155 FROM ITS JUNCTION WITH
 JV0150'U.S. HIGHWAY 40 IN HAVRE DE GRACE, SET VERTICALLY IN THE SOUTHEAST
 JV0150'FACE OF THE SOUTHWEST STONE ABUTMENT OF THE BALTIMORE AND OHIO
 JV0150'RAILROAD OVERPASS OF THE HIGHWAY, 8.6 M (28.2 FT) SOUTHWEST OF THE
 JV0150'CENTERLINE OF THE HIGHWAY, AND 3.5 M (11.5 FT) ABOVE THE LEVEL OF THE
 JV0150'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1272 ***********************************************************************
 JV1272  DESIGNATION -  D 97
 JV1272  PID         -  JV1272
 JV1272  STATE/COUNTY-  MD/BALTIMORE
 JV1272  COUNTRY     -  US
 JV1272  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1272
 JV1272                         *CURRENT SURVEY CONTROL
 JV1272  ______________________________________________________________________
 JV1272* NAD 83(1986) POSITION- 39 28 55.     (N) 076 39 55.     (W)   SCALED
 JV1272* NAVD 88 ORTHO HEIGHT -   103.057 (meters)      338.11  (feet) ADJUSTED
 JV1272  ______________________________________________________________________
 JV1272  GEOID HEIGHT    -        -32.348 (meters)                     GEOID18
 JV1272  DYNAMIC HEIGHT  -        103.003 (meters)      337.94  (feet) COMP
 JV1272  MODELED GRAVITY -    980,104.8   (mgal)                       NAVD 88
 JV1272
 JV1272  VERT ORDER      -  SECOND    CLASS 0
 JV1272
 JV1272.The horizontal coordinates were scaled from a map and have
 JV1272.an estimated accuracy of +/- 6 seconds.
 JV1272
 JV1272.The orthometric height was determined by differential leveling and
 JV1272.adjusted by the NATIONAL GEODETIC SURVEY
 JV1272.in June 1991.
 JV1272
 JV1272.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1272.GEOID18 height accuracy estimate available here.
 JV1272
 JV1272.Click photographs - Photos may exist for this station.
 JV1272
 JV1272.The dynamic height is computed by dividing the NAVD 88
 JV1272.geopotential number by the normal gravity value computed on the
 JV1272.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1272.degrees latitude (g = 980.6199 gals.).
 JV1272
 JV1272.The modeled gravity was interpolated from observed gravity values.
 JV1272
 JV1272;                    North         East    Units  Estimated Accuracy
 JV1272;SPC MD       -   201,560.      428,800.      MT  (+/- 180 meters Scaled)
 JV1272
 JV1272_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ567715(NAD 83)
 JV1272
 JV1272                          SUPERSEDED SURVEY CONTROL
 JV1272
 JV1272  NGVD 29 (11/26/84)  103.268  (m)          338.81   (f) ADJUSTED    2 0
 JV1272
 JV1272.Superseded values are not recommended for survey control.
 JV1272
 JV1272.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1272.See file dsdata.pdf to determine how the superseded data were derived.
 JV1272
 JV1272_MARKER: DB = BENCH MARK DISK
 JV1272_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1272_SP_SET: PIER
 JV1272_STAMPING: D 97 1959
 JV1272_MARK LOGO: CGS
 JV1272_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1272
 JV1272  HISTORY     - Date     Condition        Report By
 JV1272  HISTORY     - 1959     MONUMENTED       CGS
 JV1272
 JV1272                          STATION DESCRIPTION
 JV1272
 JV1272'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1272'5 MI N FROM LUTHERVILLE.
 JV1272'5.0 MILES NORTH ALONG U.S. HIGHWAY 111 FROM THE JUNCTION OF THE
 JV1272'BALTIMORE BELTWAY IN THE VICINITY OF LUTHERVILLE, SET VERTICALLY
 JV1272'IN THE WEST CONCRETE FACE OF THE FIRST CONCRETE PIER SUPPORTING
 JV1272'A LARGE OVERPASS OVER THE HIGHWAY, 30 FEET WEST OF THE CENTER
 JV1272'LINE OF THE SOUTH BOUND LANE, 8 FEET SOUTH OF THE NORTH END OF
 JV1272'THE CONCRETE PIER AND 2.5 FEET ABOVE THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1273 ***********************************************************************
 JV1273  DESIGNATION -  D 97 RESET
 JV1273  PID         -  JV1273
 JV1273  STATE/COUNTY-  MD/BALTIMORE
 JV1273  COUNTRY     -  US
 JV1273  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1273
 JV1273                         *CURRENT SURVEY CONTROL
 JV1273  ______________________________________________________________________
 JV1273* NAD 83(1986) POSITION- 39 28 55.     (N) 076 39 55.     (W)   SCALED
 JV1273* NAVD 88 ORTHO HEIGHT -   101.23  (meters)      332.1   (feet) RESET
 JV1273  ______________________________________________________________________
 JV1273  GEOID HEIGHT    -        -32.348 (meters)                     GEOID18
 JV1273  VERT ORDER      -  THIRD
 JV1273
 JV1273.The horizontal coordinates were scaled from a map and have
 JV1273.an estimated accuracy of +/- 6 seconds.
 JV1273
 JV1273.The orthometric height was computed from unverified reset data.
 JV1273
 JV1273.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1273.GEOID18 height accuracy estimate available here.
 JV1273
 JV1273.Click photographs - Photos may exist for this station.
 JV1273
 JV1273;                    North         East    Units  Estimated Accuracy
 JV1273;SPC MD       -   201,560.      428,800.      MT  (+/- 180 meters Scaled)
 JV1273
 JV1273_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ567715(NAD 83)
 JV1273
 JV1273                          SUPERSEDED SURVEY CONTROL
 JV1273
 JV1273  NGVD 29 (??/??/??)  101.44   (m)          332.8    (f) RESET       3  
 JV1273
 JV1273.Superseded values are not recommended for survey control.
 JV1273
 JV1273.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1273.See file dsdata.pdf to determine how the superseded data were derived.
 JV1273
 JV1273_MARKER: DV = VERTICAL CONTROL DISK
 JV1273_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1273_SP_SET: BASIN
 JV1273_STAMPING: D 97 RESET 1972
 JV1273_MARK LOGO: NGS
 JV1273_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1273
 JV1273  HISTORY     - Date     Condition        Report By
 JV1273  HISTORY     - 1972     MONUMENTED       NGS
 JV1273
 JV1273                          STATION DESCRIPTION
 JV1273
 JV1273'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 JV1273'5.1 MI N FROM LUTHERVILLE.
 JV1273'5.1 MILES NORTH ALONG HIGHWAY I-83 FROM THE BALTIMORE BELTWAY
 JV1273'(HIGHWAY I-695) IN THE VICINITY OF LUTHERVILLE.  SET IN A DRILL
 JV1273'HOLE IN THE TOP OF THE WEST WALL OF A CONCRETE CATCH BASIN IN
 JV1273'THE MEDIAN BETWEEN THE NORTH AND SOUTH BOUND LANES OF TRAFFIC.
 JV1273'APPROXIMATELY 495 FEET NORTH OF THE BEAVER DAM ROAD BRIDGE OVER
 JV1273'HIGHWAY I-83, 27.2 FEET SOUTH OF THE CENTERLINE OF A CONCRETE
 JV1273'CROSSOVER BETWEEN TRAFFIC LANES, AND DIRECTLY WEST OF A LARGE BEN
 JV1273'FRANKLIN STORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1274 ***********************************************************************
 JV1274  DESIGNATION -  D 97 RESET
 JV1274  PID         -  JV1274
 JV1274  STATE/COUNTY-  MD/BALTIMORE
 JV1274  COUNTRY     -  US
 JV1274  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1274
 JV1274                         *CURRENT SURVEY CONTROL
 JV1274  ______________________________________________________________________
 JV1274* NAD 83(1986) POSITION- 39 28 55.     (N) 076 39 55.     (W)   SCALED
 JV1274* NAVD 88 ORTHO HEIGHT -   103.92  (+/-2cm)      340.9   (feet) VERTCON3
 JV1274  ______________________________________________________________________
 JV1274  GEOID HEIGHT    -        -32.348 (meters)                     GEOID18
 JV1274  VERT ORDER      -  THIRD (See Below)
 JV1274
 JV1274.The horizontal coordinates were scaled from a map and have
 JV1274.an estimated accuracy of +/- 6 seconds.
 JV1274
 JV1274.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1274.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1274
 JV1274.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1274.GEOID18 height accuracy estimate available here.
 JV1274
 JV1274.The vertical order pertains to the NGVD 29 superseded value.
 JV1274
 JV1274.Click photographs - Photos may exist for this station.
 JV1274
 JV1274;                    North         East    Units  Estimated Accuracy
 JV1274;SPC MD       -   201,560.      428,800.      MT  (+/- 180 meters Scaled)
 JV1274
 JV1274_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ567715(NAD 83)
 JV1274
 JV1274                          SUPERSEDED SURVEY CONTROL
 JV1274
 JV1274  NGVD 29 (??/??/??)  104.14   (m)          341.7    (f) RESET       3  
 JV1274
 JV1274.Superseded values are not recommended for survey control.
 JV1274
 JV1274.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1274.See file dsdata.pdf to determine how the superseded data were derived.
 JV1274
 JV1274_MARKER: DV = VERTICAL CONTROL DISK
 JV1274_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1274_SP_SET: PIER
 JV1274_STAMPING: D 97 RESET 1974
 JV1274_MARK LOGO: NGS
 JV1274_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1274
 JV1274  HISTORY     - Date     Condition        Report By
 JV1274  HISTORY     - 1974     MONUMENTED       MDDT
 JV1274  HISTORY     - 1974     GOOD             NGS
 JV1274
 JV1274                          STATION DESCRIPTION
 JV1274
 JV1274'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
 JV1274'5 MI N FROM LUTHERVILLE.
 JV1274'THE MARK IS LOCATED 5.1 MILES NORTH OF THE INTERSECTION OF
 JV1274'INTERSTATE HIGHWAYS 83 AND 695 IN THE NORTH PART OF BALTIMORE.
 JV1274'IT IS ON THE NORTH END OF THE CENTER PIER OF THE OVERPASS BRIDGE
 JV1274'AT THE INTERSECTION OF INTERSTATE HIGHWAY 83 AND BEAVER DAM
 JV1274'ROAD.  IT IS SET VERTICALLY IN THE PIER ABOUT 5 FEET HIGHER THAN
 JV1274'THE ROAD.  BENCH MARK D 97 RESET 1972 WAS DESTROYED AFTER THE
 JV1274'NEW MARK WAS LEVELED TO.  THE OLD BENCH MARK WAS IN THE AREA OF
 JV1274'CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0859 ***********************************************************************
 JV0859  DESIGNATION -  D 98
 JV0859  PID         -  JV0859
 JV0859  STATE/COUNTY-  MD/BALTIMORE
 JV0859  COUNTRY     -  US
 JV0859  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0859
 JV0859                         *CURRENT SURVEY CONTROL
 JV0859  ______________________________________________________________________
 JV0859* NAD 83(1986) POSITION- 39 15 44.     (N) 076 42 23.     (W)   SCALED
 JV0859* NAVD 88 ORTHO HEIGHT -    65.743 (meters)      215.69  (feet) ADJUSTED
 JV0859  ______________________________________________________________________
 JV0859  GEOID HEIGHT    -        -32.472 (meters)                     GEOID18
 JV0859  DYNAMIC HEIGHT  -         65.708 (meters)      215.58  (feet) COMP
 JV0859  MODELED GRAVITY -    980,098.3   (mgal)                       NAVD 88
 JV0859
 JV0859  VERT ORDER      -  SECOND    CLASS 0
 JV0859
 JV0859.The horizontal coordinates were scaled from a map and have
 JV0859.an estimated accuracy of +/- 6 seconds.
 JV0859
 JV0859.The orthometric height was determined by differential leveling and
 JV0859.adjusted by the NATIONAL GEODETIC SURVEY
 JV0859.in June 1991.
 JV0859
 JV0859.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0859.GEOID18 height accuracy estimate available here.
 JV0859
 JV0859.Click photographs - Photos may exist for this station.
 JV0859
 JV0859.The dynamic height is computed by dividing the NAVD 88
 JV0859.geopotential number by the normal gravity value computed on the
 JV0859.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0859.degrees latitude (g = 980.6199 gals.).
 JV0859
 JV0859.The modeled gravity was interpolated from observed gravity values.
 JV0859
 JV0859;                    North         East    Units  Estimated Accuracy
 JV0859;SPC MD       -   177,160.      425,340.      MT  (+/- 180 meters Scaled)
 JV0859
 JV0859_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ527472(NAD 83)
 JV0859
 JV0859                          SUPERSEDED SURVEY CONTROL
 JV0859
 JV0859  NGVD 29 (11/26/84)   65.960  (m)          216.40   (f) ADJUSTED    2 0
 JV0859
 JV0859.Superseded values are not recommended for survey control.
 JV0859
 JV0859.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0859.See file dsdata.pdf to determine how the superseded data were derived.
 JV0859
 JV0859_MARKER: DB = BENCH MARK DISK
 JV0859_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0859_SP_SET: OVERPASS CURBING
 JV0859_STAMPING: D 98 1960
 JV0859_MARK LOGO: CGS
 JV0859_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0859
 JV0859  HISTORY     - Date     Condition        Report By
 JV0859  HISTORY     - 1960     MONUMENTED       CGS
 JV0859  HISTORY     - 20030921 MARK NOT FOUND   USPSQD
 JV0859
 JV0859                          STATION DESCRIPTION
 JV0859
 JV0859'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0859'1.9 MI SE FROM CATONSVILLE.
 JV0859'ABOUT 0.6 MILE EAST ALONG FREDERICK ROAD FROM THE POST OFFICE
 JV0859'AT CATONSVILLE, THENCE ABOUT 1.3 MILES SOUTHEAST ALONG BALTIMORE
 JV0859'COUNTY BELTWAY (INTERSTATE HIGHWAY 695), IN THE TOP OF CURBING
 JV0859'AT SOUTHEAST END OF NORTHWEST BOUND TRAFFIC LANE OF OVERPASS OVER
 JV0859'WILKENS AVENUE, 28 FEET NORTHEAST OF CENTER LINE OF NORTHWEST
 JV0859'BOUND LANE, 2 FEET NORTHWEST OF SOUTHEAST END OF CURBING AND 1
 JV0859'FOOT ABOVE LEVEL OF HIGHWAY.
 JV0859
 JV0859                          STATION RECOVERY (2003)
 JV0859
 JV0859'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0859'NOT FOUND.  NOTE-- THE BRIDGE WAS REBUILT IN 1964.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0860 ***********************************************************************
 JV0860  DESIGNATION -  D 98 RESET
 JV0860  PID         -  JV0860
 JV0860  STATE/COUNTY-  MD/BALTIMORE
 JV0860  COUNTRY     -  US
 JV0860  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0860
 JV0860                         *CURRENT SURVEY CONTROL
 JV0860  ______________________________________________________________________
 JV0860* NAD 83(1986) POSITION- 39 15 44.     (N) 076 42 23.     (W)   SCALED
 JV0860* NAVD 88 ORTHO HEIGHT -    66.99  (meters)      219.8   (feet) RESET
 JV0860  ______________________________________________________________________
 JV0860  GEOID HEIGHT    -        -32.472 (meters)                     GEOID18
 JV0860  VERT ORDER      -  THIRD
 JV0860
 JV0860.The horizontal coordinates were scaled from a map and have
 JV0860.an estimated accuracy of +/- 6 seconds.
 JV0860
 JV0860.The orthometric height was computed from unverified reset data.
 JV0860
 JV0860.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0860.GEOID18 height accuracy estimate available here.
 JV0860
 JV0860.Click photographs - Photos may exist for this station.
 JV0860
 JV0860;                    North         East    Units  Estimated Accuracy
 JV0860;SPC MD       -   177,160.      425,340.      MT  (+/- 180 meters Scaled)
 JV0860
 JV0860_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ527472(NAD 83)
 JV0860
 JV0860                          SUPERSEDED SURVEY CONTROL
 JV0860
 JV0860  NGVD 29 (??/??/??)   67.21   (m)          220.5    (f) RESET       3  
 JV0860
 JV0860.Superseded values are not recommended for survey control.
 JV0860
 JV0860.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0860.See file dsdata.pdf to determine how the superseded data were derived.
 JV0860
 JV0860_MARKER: DB = BENCH MARK DISK
 JV0860_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0860_SP_SET: CURB
 JV0860_STAMPING: D 98 RESET 1964
 JV0860_MARK LOGO: CGS
 JV0860_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0860
 JV0860  HISTORY     - Date     Condition        Report By
 JV0860  HISTORY     - 1964     MONUMENTED       MDSRC
 JV0860  HISTORY     - 20030921 MARK NOT FOUND   USPSQD
 JV0860
 JV0860                          STATION DESCRIPTION
 JV0860
 JV0860'DESCRIBED BY MD STATE ROADS COMM 1964
 JV0860'2 MI SE FROM CATONSVILLE.
 JV0860'FROM THE CATONSVILLE POST OFFICE, PROCEED EAST ALONG (MD. 144)
 JV0860'FREDERICK ROAD, 0.7 MILE TO THE BALTIMORE BELTWAY, TURN RIGHT
 JV0860'AND PROCEED SOUTH ALONG (MD. 695), THE BALTIMORE BELTWAY 1.3 MILES
 JV0860'TO THE BRIDGE OVER WILKINS AVENUE.  STATION IS LOCATED IN THE
 JV0860'SOUTHWEST CORNER OF THE SOUTH BOUND LANE BRIDGE, 26.5 FEET WEST
 JV0860'OF THE CENTERLINE OF THE SOUTH BOUND LANE AND 4.0 FEET NORTH OF
 JV0860'THE SOUTHWEST CORNER OF THE BRIDGE, AND SET FLUSH IN THE CONCRETE
 JV0860'CURB.
 JV0860
 JV0860                          STATION RECOVERY (2003)
 JV0860
 JV0860'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0860'NOT FOUND.  NOTE-- THE WEST SIDE OF THE BRIDGE IN 2003 IS BEING
 JV0860'WIDENED TO ACCOMMODATE A SOUTH-BOUND EXIT LANE ONTO WILKENS AVENUE
 JV0860'EAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0218 ***********************************************************************
 JV0218  DESIGNATION -  D 99
 JV0218  PID         -  JV0218
 JV0218  STATE/COUNTY-  MD/HARFORD
 JV0218  COUNTRY     -  US
 JV0218  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0218
 JV0218                         *CURRENT SURVEY CONTROL
 JV0218  ______________________________________________________________________
 JV0218* NAD 83(1986) POSITION- 39 36 06.     (N) 076 26 30.     (W)   SCALED
 JV0218* NAVD 88 ORTHO HEIGHT -   171.564 (meters)      562.87  (feet) ADJUSTED
 JV0218  ______________________________________________________________________
 JV0218  GEOID HEIGHT    -        -32.583 (meters)                     GEOID18
 JV0218  DYNAMIC HEIGHT  -        171.476 (meters)      562.58  (feet) COMP
 JV0218  MODELED GRAVITY -    980,111.0   (mgal)                       NAVD 88
 JV0218
 JV0218  VERT ORDER      -  SECOND    CLASS 0
 JV0218
 JV0218.The horizontal coordinates were scaled from a map and have
 JV0218.an estimated accuracy of +/- 6 seconds.
 JV0218
 JV0218.The orthometric height was determined by differential leveling and
 JV0218.adjusted by the NATIONAL GEODETIC SURVEY
 JV0218.in June 1991.
 JV0218
 JV0218.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0218.GEOID18 height accuracy estimate available here.
 JV0218
 JV0218.Click photographs - Photos may exist for this station.
 JV0218
 JV0218.The dynamic height is computed by dividing the NAVD 88
 JV0218.geopotential number by the normal gravity value computed on the
 JV0218.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0218.degrees latitude (g = 980.6199 gals.).
 JV0218
 JV0218.The modeled gravity was interpolated from observed gravity values.
 JV0218
 JV0218;                    North         East    Units  Estimated Accuracy
 JV0218;SPC MD       -   214,950.      447,960.      MT  (+/- 180 meters Scaled)
 JV0218
 JV0218_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ762845(NAD 83)
 JV0218
 JV0218                          SUPERSEDED SURVEY CONTROL
 JV0218
 JV0218  NGVD 29 (11/26/84)  171.806  (m)          563.67   (f) ADJUSTED    2 0
 JV0218
 JV0218.Superseded values are not recommended for survey control.
 JV0218
 JV0218.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0218.See file dsdata.pdf to determine how the superseded data were derived.
 JV0218
 JV0218_MARKER: DB = BENCH MARK DISK
 JV0218_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0218_SP_SET: BUILDING
 JV0218_STAMPING: D 99 1960
 JV0218_MARK LOGO: CGS
 JV0218_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0218_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0218+SATELLITE: SATELLITE OBSERVATIONS - October 10, 2004
 JV0218
 JV0218  HISTORY     - Date     Condition        Report By
 JV0218  HISTORY     - 1960     MONUMENTED       CGS
 JV0218  HISTORY     - 19971004 GOOD             USPSQD
 JV0218  HISTORY     - 20041010 GOOD             GEOCAC
 JV0218
 JV0218                          STATION DESCRIPTION
 JV0218
 JV0218'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0218'2.5 MI E FROM JARRETTSVILLE.
 JV0218'ABOUT 2.5 MILES EAST ALONG STATE HIGHWAY 23 FROM THE INTERSECTION
 JV0218'OF STATE HIGHWAY 165 AT JARRETTSVILLE, 81 1/2 FEET EAST OF THE
 JV0218'CENTER LINE OF THE HIGHWAY, SET VERTICALLY IN THE WEST STONE FACE
 JV0218'OF WILLIAM WATTERS MEMORIAL METHODIST CHURCH, 0.8 FOOT NORTH OF
 JV0218'THE SOUTHWEST CORNER OF THE BUILDING, AND 3.3 FEET ABOVE THE LEVEL
 JV0218'OF THE GROUND.
 JV0218
 JV0218                          STATION RECOVERY (1997)
 JV0218
 JV0218'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0218'RECOVERED IN GOOD CONDITION.
 JV0218
 JV0218                          STATION RECOVERY (2004)
 JV0218
 JV0218'RECOVERY NOTE BY GEOCACHING 2004 (MFL)
 JV0218'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI7162 ***********************************************************************
 AI7162  DESIGNATION -  D CROCKETT
 AI7162  PID         -  AI7162
 AI7162  STATE/COUNTY-  MD/SOMERSET
 AI7162  COUNTRY     -  US
 AI7162  USGS QUAD   -  KINGSTON (2016)
 AI7162
 AI7162                         *CURRENT SURVEY CONTROL
 AI7162  ______________________________________________________________________
 AI7162* NAD 83(2011) POSITION- 38 04 26.79396(N) 075 43 58.60042(W)   ADJUSTED
 AI7162* NAD 83(2011) ELLIP HT-   -34.011 (meters)        (02/16/16)   ADJUSTED
 AI7162* NAD 83(2011) EPOCH   -  2010.00
 AI7162* NAVD 88 ORTHO HEIGHT -     2.078 (meters)        6.82  (feet) ADJUSTED
 AI7162  ______________________________________________________________________
 AI7162  GEOID HEIGHT    -        -36.102 (meters)                     GEOID18
 AI7162  NAD 83(2011) X  -  1,238,945.214 (meters)                     COMP
 AI7162  NAD 83(2011) Y  - -4,872,278.886 (meters)                     COMP
 AI7162  NAD 83(2011) Z  -  3,911,901.845 (meters)                     COMP
 AI7162  LAPLACE CORR    -         -2.12  (seconds)                    DEFLEC18
 AI7162  DYNAMIC HEIGHT  -          2.076 (meters)        6.81  (feet) COMP
 AI7162  MODELED GRAVITY -    979,977.5   (mgal)                       NAVD 88
 AI7162
 AI7162  VERT ORDER      -  FIRST     CLASS II
 AI7162
 AI7162  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI7162  Standards:
 AI7162         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI7162            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI7162  -------------------------------------------------------------------
 AI7162  NETWORK    0.78   1.98           0.33   0.31   1.01     -0.01467253
 AI7162  -------------------------------------------------------------------
 AI7162  Click here for local accuracies and other accuracy information.
 AI7162
 AI7162.The horizontal coordinates were established by GPS observations
 AI7162.and adjusted by the ARCHER-SHEE LAND SURVEYING in February 2016.
 AI7162
 AI7162.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI7162.been affixed to the stable North American tectonic plate. See 
 AI7162.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI7162
 AI7162.The horizontal coordinates are valid at the epoch date displayed above
 AI7162.which is a decimal equivalence of Year/Month/Day.
 AI7162
 AI7162.The orthometric height was determined by differential leveling and
 AI7162.adjusted by the NATIONAL GEODETIC SURVEY
 AI7162.in September 2000.
 AI7162
 AI7162.No vertical observational check was made to the station.
 AI7162
 AI7162.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI7162.GEOID18 height accuracy estimate available here.
 AI7162
 AI7162.Click photographs - Photos may exist for this station.
 AI7162
 AI7162.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI7162
 AI7162.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI7162
 AI7162.The ellipsoidal height was determined by GPS observations
 AI7162.and is referenced to NAD 83.
 AI7162
 AI7162.The dynamic height is computed by dividing the NAVD 88
 AI7162.geopotential number by the normal gravity value computed on the
 AI7162.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AI7162.degrees latitude (g = 980.6199 gals.).
 AI7162
 AI7162.The modeled gravity was interpolated from observed gravity values.
 AI7162
 AI7162. The following values were computed from the NAD 83(2011) position.
 AI7162
 AI7162;                    North         East     Units Scale Factor Converg.
 AI7162;SPC MD       -    46,000.012   511,178.162   MT  1.00004697   +0 47 42.9
 AI7162;SPC MD       -   150,918.37  1,677,090.35   sFT  1.00004697   +0 47 42.9
 AI7162;UTM  18      - 4,214,291.244   435,713.815   MT  0.99965090   -0 27 07.2
 AI7162
 AI7162!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI7162!SPC MD       -   1.00000534  x   1.00004697  =   1.00005231
 AI7162!UTM  18      -   1.00000534  x   0.99965090  =   0.99965623
 AI7162
 AI7162_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3571314291(NAD 83)
 AI7162
 AI7162                          SUPERSEDED SURVEY CONTROL
 AI7162
 AI7162.No superseded survey control is available for this station.
 AI7162
 AI7162_MARKER: F = FLANGE-ENCASED ROD
 AI7162_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 AI7162_STAMPING: D CROCKETT 1998
 AI7162_MARK LOGO: NGS
 AI7162_PROJECTION: RECESSED 3 CENTIMETERS
 AI7162_MAGNETIC: N = NO MAGNETIC MATERIAL
 AI7162_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AI7162_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI7162+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2015
 AI7162_ROD/PIPE-DEPTH: 6.4 meters
 AI7162_SLEEVE-DEPTH  : 0.3 meters
 AI7162
 AI7162  HISTORY     - Date     Condition        Report By
 AI7162  HISTORY     - 1998     MONUMENTED       NGS
 AI7162  HISTORY     - 20000407 GOOD             NGS
 AI7162  HISTORY     - 20150514 GOOD             ARCSHE
 AI7162
 AI7162                          STATION DESCRIPTION
 AI7162
 AI7162'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (DBC)
 AI7162'4.3 MILES (6.9 KM) SOUTHWEST ALONG STATE HIGHWAY 413 FROM THE JUNCTION
 AI7162'OF US HIGHWAY 13 NEAR WESTOVER, TO THE INTERSECTION OF KINGSTON LANE,
 AI7162'THENCE 0.3 MILE (0.5 KM) NORTHWESTERLY ALONG KINGSTON LANE TO THE
 AI7162'RESIDENCE OF DAVID B CROCKETT, 29462 KINGSTON LANE, WESTOVER, MD.
 AI7162'21817, THENCE 200.0 FEET (61.0 M) NORTH OF CENTERLINE OF KINGSTON
 AI7162'LANE, NORTH ACROSS LAWN TO MARK IN BACK YARD.  62.8 FEET (19.1 M)
 AI7162'NORTHEAST OF NORTH CORNER OF A RAMBLER HOUSE, 39.4 FEET (12.0 M) SOUTH
 AI7162'OF A LONE TREE, 97.9 FEET (29.8 M) SOUTHWEST OF A STEEL PIPE FOR A
 AI7162'SATELLITE ANTENNA.  NOTE--THE SLEEVE DEPTH DOES NOT MEET THE
 AI7162'SPECIFICATIONS FOR A CLASS A MARK.
 AI7162
 AI7162                          STATION RECOVERY (2015)
 AI7162
 AI7162'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 AI7162'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI6314 ***********************************************************************
 AI6314  DESIGNATION -  D12 010
 AI6314  PID         -  AI6314
 AI6314  STATE/COUNTY-  MD/ALLEGANY
 AI6314  COUNTRY     -  US
 AI6314  USGS QUAD   -  CUMBERLAND (2016)
 AI6314
 AI6314                         *CURRENT SURVEY CONTROL
 AI6314  ______________________________________________________________________
 AI6314* NAD 83(2011) POSITION- 39 40 29.98355(N) 078 47 24.94999(W)   ADJUSTED
 AI6314* NAD 83(2011) ELLIP HT-   170.978 (meters)        (06/27/12)   ADJUSTED
 AI6314* NAD 83(2011) EPOCH   -  2010.00
 AI6314* NAVD 88 ORTHO HEIGHT -   203.51  (meters)      667.7   (feet) LEVELING
 AI6314  ______________________________________________________________________
 AI6314  GEOID HEIGHT    -        -32.587 (meters)                     GEOID18
 AI6314  NAD 83(2011) X  -    955,666.984 (meters)                     COMP
 AI6314  NAD 83(2011) Y  - -4,822,170.200 (meters)                     COMP
 AI6314  NAD 83(2011) Z  -  4,050,385.805 (meters)                     COMP
 AI6314  LAPLACE CORR    -         -5.45  (seconds)                    DEFLEC18
 AI6314  VERT ORDER      -  THIRD ?
 AI6314
 AI6314  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI6314  Standards:
 AI6314         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI6314            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI6314  -------------------------------------------------------------------
 AI6314  NETWORK    0.99   2.00           0.44   0.36   1.02     -0.03842919
 AI6314  -------------------------------------------------------------------
 AI6314  Click here for local accuracies and other accuracy information.
 AI6314
 AI6314.The horizontal coordinates were established by GPS observations
 AI6314.and adjusted by the National Geodetic Survey in June 2012.
 AI6314
 AI6314.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI6314.been affixed to the stable North American tectonic plate. See 
 AI6314.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI6314
 AI6314.The horizontal coordinates are valid at the epoch date displayed above
 AI6314.which is a decimal equivalence of Year/Month/Day.
 AI6314
 AI6314.The orthometric height was determined by differential leveling.
 AI6314.The vertical network tie was performed by a horz. field party for horz.
 AI6314.obs reductions. Reset procedures were used to establish the elevation.
 AI6314
 AI6314.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI6314.GEOID18 height accuracy estimate available here.
 AI6314
 AI6314.Click photographs - Photos may exist for this station.
 AI6314
 AI6314.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI6314
 AI6314.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI6314
 AI6314.The ellipsoidal height was determined by GPS observations
 AI6314.and is referenced to NAD 83.
 AI6314
 AI6314. The following values were computed from the NAD 83(2011) position.
 AI6314
 AI6314;                    North         East     Units Scale Factor Converg.
 AI6314;SPC MD       -   224,450.760   246,402.759   MT  1.00004711   -1 07 25.1
 AI6314;SPC MD       -   736,385.54    808,406.39   sFT  1.00004711   -1 07 25.1
 AI6314;UTM  17      - 4,394,019.800   689,522.394   MT  1.00004223   +1 24 40.3
 AI6314
 AI6314!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI6314!SPC MD       -   0.99997318  x   1.00004711  =   1.00002029
 AI6314!UTM  17      -   0.99997318  x   1.00004223  =   1.00001541
 AI6314
 AI6314_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8952294019(NAD 83)
 AI6314
 AI6314|---------------------------------------------------------------------|
 AI6314| PID    Reference Object                     Distance      Geod. Az  |
 AI6314|                                                           dddmmss.s |
 AI6314| AI6320 D12 020                             266.994 METERS 02228     |
 AI6314|---------------------------------------------------------------------|
 AI6314
 AI6314                          SUPERSEDED SURVEY CONTROL
 AI6314
 AI6314  NAD 83(2007)-  39 40 29.98376(N)    078 47 24.95069(W) AD(2002.00) 0
 AI6314  ELLIP H (02/10/07)  170.996  (m)                       GP(2002.00)    
 AI6314  ELLIP H (08/30/02)  171.000  (m)                       GP(       ) 4 2
 AI6314  NAD 83(1991)-  39 40 29.98395(N)    078 47 24.95046(W) AD(       ) 1
 AI6314  ELLIP H (04/20/00)  170.935  (m)                       GP(       ) 4 1
 AI6314
 AI6314.Superseded values are not recommended for survey control.
 AI6314
 AI6314.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI6314.See file dsdata.pdf to determine how the superseded data were derived.
 AI6314
 AI6314_MARKER: DD = SURVEY DISK
 AI6314_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI6314_STAMPING: D12-010
 AI6314_MARK LOGO: MD-001
 AI6314_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI6314_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI6314+STABILITY: SURFACE MOTION
 AI6314_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI6314+SATELLITE: SATELLITE OBSERVATIONS - October 30, 2024
 AI6314
 AI6314  HISTORY     - Date     Condition        Report By
 AI6314  HISTORY     - 1999     MONUMENTED       MD-001
 AI6314  HISTORY     - 20241030 GOOD             DEI
 AI6314
 AI6314                          STATION DESCRIPTION
 AI6314
 AI6314'DESCRIBED BY ALLEGANY COUNTY MARYLAND 1999
 AI6314'TO REACH 2.6 MI (4.2 KM) NORTHWEST OF CUMBERLAND.  IN ALLEGANY COUNTY,
 AI6314'MARYLAND, 2.2 MI (3.5 KM) NORTH ALONG WESTERN MARYLAND RAILWAY FROM
 AI6314'THE STATION IN CUMBERLAND TO LOCUST GROVE ROAD, 0.8 MI (1.3 KM) TO
 AI6314'BEAR LANE, 200 FT (61.0 M) TO THE INTERSECTION WITH WABASH STREET, IN
 AI6314'CONCRETE MONUMENT IN SOUTH MARGIN OF BEAR LANE AND WEST MARGIN OF
 AI6314'WABASH STREET, STANDARD DISK MARKED D12010.
 AI6314
 AI6314                          STATION RECOVERY (2024)
 AI6314
 AI6314'RECOVERY NOTE BY DEWBERRY ENGINEERING INC. 2024 (GS)
 AI6314'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI6320 ***********************************************************************
 AI6320  DESIGNATION -  D12 020
 AI6320  PID         -  AI6320
 AI6320  STATE/COUNTY-  MD/ALLEGANY
 AI6320  COUNTRY     -  US
 AI6320  USGS QUAD   -  CUMBERLAND (2016)
 AI6320
 AI6320                         *CURRENT SURVEY CONTROL
 AI6320  ______________________________________________________________________
 AI6320* NAD 83(2011) POSITION- 39 40 37.98321(N) 078 47 20.66775(W)   ADJUSTED
 AI6320* NAD 83(2011) ELLIP HT-   172.170 (meters)        (06/27/12)   ADJUSTED
 AI6320* NAD 83(2011) EPOCH   -  2010.00
 AI6320* NAVD 88 ORTHO HEIGHT -   204.71  (meters)      671.6   (feet) LEVELING
 AI6320  ______________________________________________________________________
 AI6320  GEOID HEIGHT    -        -32.587 (meters)                     GEOID18
 AI6320  NAD 83(2011) X  -    955,736.649 (meters)                     COMP
 AI6320  NAD 83(2011) Y  - -4,821,996.742 (meters)                     COMP
 AI6320  NAD 83(2011) Z  -  4,050,576.462 (meters)                     COMP
 AI6320  LAPLACE CORR    -         -5.22  (seconds)                    DEFLEC18
 AI6320  VERT ORDER      -  THIRD ?
 AI6320
 AI6320  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI6320  Standards:
 AI6320         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI6320            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI6320  -------------------------------------------------------------------
 AI6320  NETWORK    0.96   1.94           0.43   0.35   0.99     -0.04063410
 AI6320  -------------------------------------------------------------------
 AI6320  Click here for local accuracies and other accuracy information.
 AI6320
 AI6320.The horizontal coordinates were established by GPS observations
 AI6320.and adjusted by the National Geodetic Survey in June 2012.
 AI6320
 AI6320.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI6320.been affixed to the stable North American tectonic plate. See 
 AI6320.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI6320
 AI6320.The horizontal coordinates are valid at the epoch date displayed above
 AI6320.which is a decimal equivalence of Year/Month/Day.
 AI6320
 AI6320.The orthometric height was determined by differential leveling.
 AI6320.The vertical network tie was performed by a horz. field party for horz.
 AI6320.obs reductions. Reset procedures were used to establish the elevation.
 AI6320
 AI6320.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI6320.GEOID18 height accuracy estimate available here.
 AI6320
 AI6320.Click photographs - Photos may exist for this station.
 AI6320
 AI6320.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI6320
 AI6320.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI6320
 AI6320.The ellipsoidal height was determined by GPS observations
 AI6320.and is referenced to NAD 83.
 AI6320
 AI6320. The following values were computed from the NAD 83(2011) position.
 AI6320
 AI6320;                    North         East     Units Scale Factor Converg.
 AI6320;SPC MD       -   224,695.443   246,509.636   MT  1.00004765   -1 07 22.4
 AI6320;SPC MD       -   737,188.30    808,757.03   sFT  1.00004765   -1 07 22.4
 AI6320;UTM  17      - 4,394,268.969   689,618.345   MT  1.00004268   +1 24 43.2
 AI6320
 AI6320!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI6320!SPC MD       -   0.99997299  x   1.00004765  =   1.00002064
 AI6320!UTM  17      -   0.99997299  x   1.00004268  =   1.00001567
 AI6320
 AI6320_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8961894268(NAD 83)
 AI6320
 AI6320|---------------------------------------------------------------------|
 AI6320| PID    Reference Object                     Distance      Geod. Az  |
 AI6320|                                                           dddmmss.s |
 AI6320| AI6314 D12 010                             266.994 METERS 20228     |
 AI6320|---------------------------------------------------------------------|
 AI6320
 AI6320                          SUPERSEDED SURVEY CONTROL
 AI6320
 AI6320  NAD 83(2007)-  39 40 37.98342(N)    078 47 20.66845(W) AD(2002.00) 0
 AI6320  ELLIP H (02/10/07)  172.188  (m)                       GP(2002.00)    
 AI6320  ELLIP H (08/30/02)  172.192  (m)                       GP(       ) 4 2
 AI6320  NAD 83(1991)-  39 40 37.98360(N)    078 47 20.66821(W) AD(       ) 1
 AI6320  ELLIP H (04/20/00)  172.127  (m)                       GP(       ) 4 1
 AI6320
 AI6320.Superseded values are not recommended for survey control.
 AI6320
 AI6320.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI6320.See file dsdata.pdf to determine how the superseded data were derived.
 AI6320
 AI6320_MARKER: DD = SURVEY DISK
 AI6320_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI6320_STAMPING: D12-020
 AI6320_MARK LOGO: MD-001
 AI6320_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI6320_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AI6320_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI6320+SATELLITE: SATELLITE OBSERVATIONS - 1999
 AI6320
 AI6320  HISTORY     - Date     Condition        Report By
 AI6320  HISTORY     - 1999     MONUMENTED       MD-001
 AI6320
 AI6320                          STATION DESCRIPTION
 AI6320
 AI6320'DESCRIBED BY ALLEGANY COUNTY MARYLAND 1999
 AI6320'TO REACH 2.6 MI (4.2 KM) NORTHWEST OF CUMBERLAND.  IN ALLEGANY COUNTY,
 AI6320'MARYLAND, 2.2 MI (3.5 KM) NORTH ALONG WESTERN MARYLAND RAILWAY FROM
 AI6320'THE STATION IN CUMBERLAND TO LOCUST GROVE ROAD, 0.8 MI (1.3 KM) TO
 AI6320'BEAR LANE, 200 FT (61.0 M) TO THE INTERSECTION WITH WABASH STREET, 900
 AI6320'FEET (274.3 M) NORTH ON WABASH STREET, IN CONCRETE MONUMENT IN EAST
 AI6320'MARGIN WABASH STREET, STANDARD DISK MARKED D12020.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6557 ***********************************************************************
 HV6557  DESIGNATION -  DAGO
 HV6557  PID         -  HV6557
 HV6557  STATE/COUNTY-  MD/ST MARYS
 HV6557  COUNTRY     -  US
 HV6557  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6557
 HV6557                         *CURRENT SURVEY CONTROL
 HV6557  ______________________________________________________________________
 HV6557* NAD 83(1993) POSITION- 38 06 31.02996(N) 076 24 19.56816(W)   ADJUSTED
 HV6557* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6557  ______________________________________________________________________
 HV6557  GEOID HEIGHT    -        -34.963 (meters)                     GEOID18
 HV6557  LAPLACE CORR    -         -6.08  (seconds)                    DEFLEC18
 HV6557  HORZ ORDER      -  THIRD
 HV6557
 HV6557.The horizontal coordinates were established by classical geodetic methods
 HV6557.and adjusted by the National Geodetic Survey in November 1994.
 HV6557
 HV6557.The orthometric height was scaled from a topographic map.
 HV6557
 HV6557.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6557.GEOID18 height accuracy estimate available here.
 HV6557
 HV6557.Click photographs - Photos may exist for this station.
 HV6557
 HV6557.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6557
 HV6557. The following values were computed from the NAD 83(1993) position.
 HV6557
 HV6557;                    North         East     Units Scale Factor Converg.
 HV6557;SPC MD       -    49,228.970   452,146.589   MT  1.00003880   +0 22 23.4
 HV6557;SPC MD       -   161,512.05  1,483,417.60   sFT  1.00003880   +0 22 23.4
 HV6557;SPC VA N     - 2,051,151.312 3,683,680.843   MT  0.99998757   +1 18 26.1
 HV6557;SPC VA N     - 6,729,485.60 12,085,542.90   sFT  0.99998757   +1 18 26.1
 HV6557;SPC VA S     - 1,199,060.062 3,683,689.318   MT  1.00002899   +1 16 16.5
 HV6557;SPC VA S     - 3,933,916.22 12,085,570.70   sFT  1.00002899   +1 16 16.5
 HV6557;UTM  18      - 4,218,799.427   376,785.758   MT  0.99978698   -0 52 02.9
 HV6557
 HV6557!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6557!SPC MD       -   1.00000522  x   1.00003880  =   1.00004402
 HV6557!SPC VA N     -   1.00000522  x   0.99998757  =   0.99999279
 HV6557!SPC VA S     -   1.00000522  x   1.00002899  =   1.00003421
 HV6557!UTM  18      -   1.00000522  x   0.99978698  =   0.99979220
 HV6557
 HV6557:                Primary Azimuth Mark                     Grid Az
 HV6557:SPC MD       -  SIG MSFC 1908                            144 30 29.7
 HV6557:SPC VA N     -  SIG MSFC 1908                            143 34 27.0
 HV6557:SPC VA S     -  SIG MSFC 1908                            143 36 36.6
 HV6557:UTM  18      -  SIG MSFC 1908                            145 44 56.0
 HV6557
 HV6557_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7678518799(NAD 83)
 HV6557
 HV6557|---------------------------------------------------------------------|
 HV6557| PID    Reference Object                     Distance      Geod. Az  |
 HV6557|                                                           dddmmss.s |
 HV6557| HV6550 SIG MSFC 1908                       APPROX. 2.0 KM 1445253.1 |
 HV6557|---------------------------------------------------------------------|
 HV6557
 HV6557                          SUPERSEDED SURVEY CONTROL
 HV6557
 HV6557  NAD 83(1991)-  38 06 31.02885(N)    076 24 19.57101(W) AD(       ) 3
 HV6557  NAD 83(1986)-  38 06 31.03029(N)    076 24 19.58484(W) AD(       ) 3
 HV6557  NAD 27      -  38 06 30.60200(N)    076 24 20.78800(W) AD(       ) 3
 HV6557  USSD        -  38 06 30.98000(N)    076 24 20.50000(W) AD(       ) 3
 HV6557
 HV6557.Superseded values are not recommended for survey control.
 HV6557
 HV6557.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6557.See file dsdata.pdf to determine how the superseded data were derived.
 HV6557
 HV6557_MARKER: K = CLAY TILE PIPE
 HV6557_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6557
 HV6557  HISTORY     - Date     Condition        Report By
 HV6557  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6557  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6557  HISTORY     - 1959     MARK NOT FOUND   CGS
 HV6557  HISTORY     - 1972     SEE DESCRIPTION  MDDNR
 HV6557
 HV6557                          STATION DESCRIPTION
 HV6557
 HV6557'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (OWF)
 HV6557'ON EASTERN SIDE OF ENTRANCE TO SMITH CREEK, ABOUT 1/2 MILE SSW OF
 HV6557'MILLERS WHARF, IN A SMALL GARDEN ABOUT 6 FEET ABOVE HIGH WATER, 40
 HV6557'YARDS N OF AN OLD HOTEL, 65 YARDS E OF SHORE, AND 165 YARDS SE OF
 HV6557'A LUMBER WHARF.  MARKED BY A TILE PIPE SET IN CEMENT.  TOP OF TILE
 HV6557'IS BROKEN OFF ABOUT 9 INCHES BELOW SURFACE OF GROUND.  REFERENCE
 HV6557'MARK IS CENTER OF STANDARD MONUMENT OF MARYLAND SHELL FISH
 HV6557'SURVEY, WHICH IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES
 HV6557'SQUARE AT THE TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME
 HV6557'MOLD AND SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HV6557'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX,
 HV6557'AND THE LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HV6557'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT, AND
 HV6557'IF THE MARKING HAS BEEN BROKEN OFF WITHOUT DISTURBING THE BOTTOM
 HV6557'THE CENTER OF THE SQUARE SECTION MAY BE USED AS THE LOCATION OF
 HV6557'THE REFERENCE MARK.  THE MONUMENT IS SET VERTICALLY IN THE GROUND,
 HV6557'WITH TOP PROJECTING ABOUT 3 TO 5 INCHES ABOVE THE SURFACE.
 HV6557'IT IS IN A FENCE LINE, AND IS 29.41 METERS (96.5 FEET) FROM
 HV6557'STATION N 78 DEG 14 MIN W.  DISTANCES AND
 HV6557'BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 HV6557'FOLLOWS--NW CORNER OF OLD HOTEL, 37.67 METERS (123.6 FEET),
 HV6557'S 40 DEG 00 MIN W.  8-INCH TREE, 42 YARDS, S 83 DEG 34 MIN W.
 HV6557'CHIMNEY OF HOUSE ACROSS CREEK, 5/8 MILE, N 51 DEG 02 MIN W.
 HV6557'NEAR CORNER OF HOUSE, 160 YARDS, N 31 DEG 05 MIN E.  NEAR CORNER
 HV6557'OF BARN, 100 YARDS, N 31 DEG 05 MIN E.  NE CORNER OF OLD HOTEL, 51.97
 HV6557'METERS (170.5 FEET), S 12 DEG 59 MIN E.
 HV6557
 HV6557                          STATION RECOVERY (1942)
 HV6557
 HV6557'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6557'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL
 HV6557'DESCRIPTION--
 HV6557'
 HV6557'(1) DELETE IT IS IN A FENCE LINE SINCE THE FENCE NO LONGER EXISTS.
 HV6557'
 HV6557'(2) DELETE NW CORNER OF OLD HOTEL, 37.67 METERS SINCE THE HOTEL
 HV6557'DOES NOT REMAIN.
 HV6557'
 HV6557'(3) DELETE 8-INCH TREE, 42 YARDS SINCE IT NO LONGER EXISTS.
 HV6557'
 HV6557'(4) DELETE NEAR CORNER OF BARN, 100 YARDS AND NE CORNER OF OLD
 HV6557'HOTEL, 51.97 METERS SINCE THEY NO LONGER STAND.
 HV6557'
 HV6557'THE STATION WAS THOROUGHLY SEARCHED FOR BUT NO TRACE OF IT COULD
 HV6557'BE FOUND.  THE REFERENCE MARK WAS FOUND IN GOOD CONDITION AND IS
 HV6557'LOCATED ABOUT 500 FEET S OF WHARF AT POTOMAC VIEW, ON THE EASTERN
 HV6557'SIDE OF ENTRANCE TO SMITH CREEK, ABOUT 1/2 MILE S OF MILLERS
 HV6557'WHARF, ABOUT 60 FEET NE OF SHORELINE, ON N SIDE OF DITCH LINE,
 HV6557'19.5 FEET SW OF NAIL IN BLAZE IN 12-INCH CEDAR TREE, AND ABOUT 110
 HV6557'FEET S OF FENCE LINE.  A 1-INCH GALVANIZED PIPE PROJECTS ABOUT
 HV6557'7 FEET OUT OF THE GROUND BY THE SIDE OF THE MARK.
 HV6557'
 HV6557'THE STATION MARK IS A HOLE IN THE CENTER OF A MARYLAND SHELL FISH
 HV6557'SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH SQUARE CONCRETE
 HV6557'MONUMENT, 2 FEET LONG, WHICH IS FLUSH WITH THE SURFACE OF THE
 HV6557'GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK IN THE
 HV6557'TOP OF THE MONUMENT.  THE MARK IS IN GOOD CONDITION.
 HV6557
 HV6557                          STATION RECOVERY (1959)
 HV6557
 HV6557'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV6557'THE STATION MARK WAS THOROUGHLY SEARCHED FOR BUT NO TRACE OF IT
 HV6557'COULD BE FOUND.  THE REFERENCE MARK WAS RECOVERED AND FOUND IN GOOD
 HV6557'CONDITION.
 HV6557'
 HV6557'PRESENT DESCRIPTION IS ADEQUATE WITH THE FOLLOWING EXCEPTIONS,
 HV6557'WHICH SHOULD BE DELETED.
 HV6557'
 HV6557'(1) DELETE 19.5 FEET SW OF NAIL IN 12-INCH CEDAR TREE, AS TREE NO
 HV6557'LONGER EXISTS.
 HV6557'
 HV6557'(2) DELETE 1-INCH GALVANIZED PIPE PROJECTS ABOUT 7 FEET OUT OF
 HV6557'GROUND BY THE SIDE OF MARK, AS PIPE NO LONGER EXISTS.
 HV6557
 HV6557                          STATION RECOVERY (1972)
 HV6557
 HV6557'RECOVERY NOTE BY MD DEPT OF NAT RES 1972 (GEH)
 HV6557'MDSFCUSCS DESTROYED
 HV6557'MARKER FOUND LYING ON SIDE ON SAND BEACH.  THE STA. IS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV3977 ***********************************************************************
 HV3977  DESIGNATION -  DAL
 HV3977  PID         -  HV3977
 HV3977  STATE/COUNTY-  MD/MONTGOMERY
 HV3977  COUNTRY     -  US
 HV3977  USGS QUAD   -  WASHINGTON WEST (2016)
 HV3977
 HV3977                         *CURRENT SURVEY CONTROL
 HV3977  ______________________________________________________________________
 HV3977* NAD 83(1993) POSITION- 38 56 46.09293(N) 077 07 02.19615(W)   ADJUSTED
 HV3977* NAVD 88 ORTHO HEIGHT -    76.    (meters)      249.    (feet) SCALED
 HV3977  ______________________________________________________________________
 HV3977  GEOID HEIGHT    -        -31.897 (meters)                     GEOID18
 HV3977  LAPLACE CORR    -         -1.97  (seconds)                    DEFLEC18
 HV3977  HORZ ORDER      -  SECOND
 HV3977
 HV3977.The horizontal coordinates were established by classical geodetic methods
 HV3977.and adjusted by the National Geodetic Survey in November 1994.
 HV3977
 HV3977.The orthometric height was scaled from a topographic map.
 HV3977
 HV3977.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV3977.GEOID18 height accuracy estimate available here.
 HV3977
 HV3977.Click photographs - Photos may exist for this station.
 HV3977
 HV3977.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV3977
 HV3977. The following values were computed from the NAD 83(1993) position.
 HV3977
 HV3977;                    North         East     Units Scale Factor Converg.
 HV3977;SPC MD       -   142,033.422   389,833.547   MT  0.99995060   -0 04 25.0
 HV3977;SPC MD       -   465,987.99  1,278,978.90   sFT  0.99995060   -0 04 25.0
 HV3977;SPC VA N     - 2,142,924.504 3,619,862.356   MT  0.99996480   +0 51 46.7
 HV3977;SPC VA N     - 7,030,578.14 11,876,165.08   sFT  0.99996480   +0 51 46.7
 HV3977;UTM  18      - 4,312,930.970   316,513.520   MT  1.00001458   -1 19 52.6
 HV3977
 HV3977!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV3977!SPC MD       -   0.99999312  x   0.99995060  =   0.99994372
 HV3977!SPC VA N     -   0.99999312  x   0.99996480  =   0.99995792
 HV3977!UTM  18      -   0.99999312  x   1.00001458  =   1.00000770
 HV3977
 HV3977:                Primary Azimuth Mark                     Grid Az
 HV3977:SPC MD       -  RENO RESET                               078 11 24.1
 HV3977:SPC VA N     -  RENO RESET                               077 15 12.4
 HV3977:UTM  18      -  RENO RESET                               079 26 51.7
 HV3977
 HV3977_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1651312930(NAD 83)
 HV3977
 HV3977|---------------------------------------------------------------------|
 HV3977| PID    Reference Object                     Distance      Geod. Az  |
 HV3977|                                                           dddmmss.s |
 HV3977| HV4384 RENO RESET                          APPROX. 3.5 KM 0780659.1 |
 HV3977| DE4965 DAL RM 1                              9.486 METERS 17705     |
 HV3977| DE4966 DAL RM 2                             11.123 METERS 25438     |
 HV3977|---------------------------------------------------------------------|
 HV3977
 HV3977                          SUPERSEDED SURVEY CONTROL
 HV3977
 HV3977  NAD 83(1991)-  38 56 46.09206(N)    077 07 02.19781(W) AD(       ) 2
 HV3977  NAD 83(1986)-  38 56 46.09189(N)    077 07 02.20759(W) AD(       ) 2
 HV3977  NAD 27      -  38 56 45.69300(N)    077 07 03.27800(W) AD(       ) 2
 HV3977  USSD        -  38 56 46.04600(N)    077 07 03.11100(W) AD(       ) 3
 HV3977
 HV3977.Superseded values are not recommended for survey control.
 HV3977
 HV3977.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV3977.See file dsdata.pdf to determine how the superseded data were derived.
 HV3977
 HV3977_MARKER: Z = SEE DESCRIPTION
 HV3977_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV3977
 HV3977  HISTORY     - Date     Condition        Report By
 HV3977  HISTORY     - 1935     MONUMENTED       WSSC
 HV3977  HISTORY     - 1935     GOOD             CGS
 HV3977  HISTORY     - 1955     GOOD             AMS
 HV3977  HISTORY     - 1956     GOOD             CGS
 HV3977
 HV3977                          STATION DESCRIPTION
 HV3977
 HV3977'DESCRIBED BY WASH SUBURB SAN COMM 1935
 HV3977'STATION IS BRASS PLUG SET IN CONCRETE ON THE TOP OF HIGH KNOLL
 HV3977'ON MARYLAND SIDE OF POTOMAC RIVER APPROXIMATELY 600 FEET N OF
 HV3977'CONDUIT ROAD AND APPROXIMATELY 200 FEET NE OF BROOK LANE.  KNOLL
 HV3977'IS BARE EXCEPT FOR 2ND GROWTH UNDERBRUSH.  ENTRANCE TO BROOK
 HV3977'LANE IS APPROXIMATELY 1/2 MILE ABOVE DALECARLIA PUMPING STATION
 HV3977'AND IS ON N SIDE OF CONDUIT ROAD.
 HV3977
 HV3977                          STATION RECOVERY (1935)
 HV3977
 HV3977'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (JHB)
 HV3977'STATION RECOVERED IN GOOD CONDITION.  IT IS OF THE WASHINGTON
 HV3977'SUBURBAN SANITARY COMMISSION.  IT IS ON TOP OF A KNOLL ABOUT
 HV3977'0.1 MILE N OF THE INTERSECTION OF CONDUIT ROAD AND BROOKS LANE,
 HV3977'ABOUT 70 METERS NE OF BROOKS LANE.  THE KNOLL IS COVERED WITH
 HV3977'SECOND GROWTH BRUSH.  BROOKS LANE INTERSECTS CONDUIT ROAD ABOUT
 HV3977'1/2 MILE N OF THE DALECARLIA PUMPING STATION.
 HV3977'
 HV3977'THE MARK IS A BRASS PLUG SET IN A CONCRETE CYLINDER ABOUT
 HV3977'6 INCHES IN DIAMETER.
 HV3977'
 HV3977'TWO NEW REFERENCE MARKS WERE ESTABLISHED.  THEY ARE STANDARD
 HV3977'DISKS SET IN CONCRETE.  REFERENCE MARK
 HV3977'NO.1 IS S OF THE STATION.  REFERENCE MARK NO.2 IS W OF THE
 HV3977'STATION AND 12.967 METERS OR 42.54 FEET NW OF REFERENCE MARK NO.1.
 HV3977'
 HV3977'A 50-FOOT TOWER WAS USED.
 HV3977
 HV3977                          STATION RECOVERY (1955)
 HV3977
 HV3977'RECOVERY NOTE BY US ARMY MAP SERVICE (NOW DMA) 1955
 HV3977'STATION AND REFERENCE-MARK DISKS 1 AND 2 RECOVERED IN GOOD
 HV3977'CONDITION.
 HV3977'
 HV3977'STATION IS LOCATED ON THE TOP OF A HIGH KNOLL COVERED WITH SECOND
 HV3977'GROWTH BRUSH, 70 M. NE OF BROOKS LANE AND APPROXIMATELY 600 FT.
 HV3977'N OF MAC ARTHUR BOULEVARD.
 HV3977'
 HV3977'STATION IS MARKED BY A BRASS PLUG SET IN A CONCRETE CYLINDER
 HV3977'ABOUT 6 IN. IN DIAMETER, AND WAS ORIGINALLY ESTABLISHED BY THE
 HV3977'WASHINGTON SUBURBAN SANITARY COMMISSION.
 HV3977'
 HV3977'REFERENCE MARK 1 IS A U.S.C.AND G.S. REFERENCE-MARK DISK, SET
 HV3977'IN CONCRETE 9.486 M. S OF THE STATION.  DISK IS STAMPED DAL NO 1
 HV3977'1935, WITH AN ARROW POINTING TO THE STATION.
 HV3977'
 HV3977'REFERENCE MARK 2 IS A U.S.C AND G.S. REFERENCE-MARK DISK, SET
 HV3977'IN CONCRETE 11.123 M. W OF THE STATION.  DISK IS STAMPED DAL NO 2
 HV3977'1935 WITH AN ARROW POINTING TO THE STATION.
 HV3977'
 HV3977'WITNESS MARK 1 IS A THREE-TRUNKED BLAZED TREE MEASURNG 16 IN. IN
 HV3977'DIAMETER FOR EACH TRUNK IS 69 FT. N-NE OF THE STATION.
 HV3977'
 HV3977'WITNESS MARK 2 IS A TWO-TRUNKED BLAZED TREE MEASURING 10 IN. IN
 HV3977'DIAMETER FOR EACH TRUNK AND IS 23 FT. 4 IN. SE OF THE STATION.
 HV3977'
 HV3977'WITNESS MARK 3 IS A BLAZED TREE MEASURING 16 IN. IN DIAMETER
 HV3977'AND IS 76 FT. S-SW OF THE STATION.
 HV3977'
 HV3977'TO REACH THE STATION, PROCEED NW VIA MACARTHUR BOULEVARD
 HV3977'APPROXIMATELY 0.3 MI. NW OF DISTRICT OF COLUMBIA BOUNDARY LINE TO
 HV3977'THE JUNCTION WITH BROOKS LANE AND THE STATION SITE ON THE RIGHT.
 HV3977'
 HV3977'STATION IS IN APPROXIMATE ALIGNMENT E-W WITH THE SE CORNER OF
 HV3977'A.M.S. ERSKINE HALL AND A SOLITARY HOUSE AT THE NW ARM OF
 HV3977'DALECARLIA RESERVOIR.  STATION IS IN APPROXIMATE ALIGNMENT N-S
 HV3977'WITH TWO MOST PROMINENT TREES IN THE IMMEDIATE VICINITY, ONE IS A
 HV3977'SINGLE-TRUNKED TREE 16 IN. IN DIAMETER AND ONE IS A THREE-TRUNKED
 HV3977'TREE, EACH TRUNK MEASURING APPROXIMATELY 16 IN. IN DIAMETER.
 HV3977
 HV3977                          STATION RECOVERY (1956)
 HV3977
 HV3977'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (MLC)
 HV3977'THE STATION AND BOTH REFERENCE MARKS ARE RECOVERED AND FOUND TO
 HV3977'BE IN GOOD CONDITION.  PREVIOUS DESCRIPTION IS ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1131 ***********************************************************************
 HV1131  DESIGNATION -  DALE
 HV1131  PID         -  HV1131
 HV1131  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1131  COUNTRY     -  US
 HV1131  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1131
 HV1131                         *CURRENT SURVEY CONTROL
 HV1131  ______________________________________________________________________
 HV1131* NAD 83(1991) POSITION- 38 59 17.93488(N) 076 52 39.70088(W)   ADJUSTED
 HV1131* NAVD 88 ORTHO HEIGHT -    36.452 (meters)      119.59  (feet) ADJUSTED
 HV1131  ______________________________________________________________________
 HV1131  GEOID HEIGHT    -        -32.278 (meters)                     GEOID18
 HV1131  LAPLACE CORR    -         -5.04  (seconds)                    DEFLEC18
 HV1131  DYNAMIC HEIGHT  -         36.433 (meters)      119.53  (feet) COMP
 HV1131  MODELED GRAVITY -    980,092.2   (mgal)                       NAVD 88
 HV1131
 HV1131  HORZ ORDER      -  SECOND
 HV1131  VERT ORDER      -  SECOND    CLASS 0
 HV1131
 HV1131.The horizontal coordinates were established by classical geodetic methods
 HV1131.and adjusted by the National Geodetic Survey in January 1992.
 HV1131
 HV1131.The orthometric height was determined by differential leveling and
 HV1131.adjusted by the NATIONAL GEODETIC SURVEY
 HV1131.in June 1991.
 HV1131
 HV1131.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1131.GEOID18 height accuracy estimate available here.
 HV1131
 HV1131.Click photographs - Photos may exist for this station.
 HV1131
 HV1131.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1131
 HV1131.The dynamic height is computed by dividing the NAVD 88
 HV1131.geopotential number by the normal gravity value computed on the
 HV1131.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1131.degrees latitude (g = 980.6199 gals.).
 HV1131
 HV1131.The modeled gravity was interpolated from observed gravity values.
 HV1131
 HV1131. The following values were computed from the NAD 83(1991) position.
 HV1131
 HV1131;                    North         East     Units Scale Factor Converg.
 HV1131;SPC MD       -   146,716.181   410,596.097   MT  0.99995177   +0 04 36.3
 HV1131;SPC MD       -   481,351.34  1,347,097.36   sFT  0.99995177   +0 04 36.3
 HV1131;UTM  18      - 4,317,156.828   337,374.254   MT  0.99992566   -1 10 53.9
 HV1131
 HV1131!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1131!SPC MD       -   0.99999935  x   0.99995177  =   0.99995112
 HV1131!UTM  18      -   0.99999935  x   0.99992566  =   0.99992501
 HV1131
 HV1131_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3737417156(NAD 83)
 HV1131
 HV1131                          SUPERSEDED SURVEY CONTROL
 HV1131
 HV1131  NAD 83(1986)-  38 59 17.93323(N)    076 52 39.71182(W) AD(       ) 2
 HV1131  NAD 27      -  38 59 17.53387(N)    076 52 40.80920(W) AD(       ) 2
 HV1131  NGVD 29              36.69   (m)          120.4    (f) LEVELING    3  
 HV1131  NGVD 29 (11/26/84)   36.688  (m)          120.37   (f) ADJUSTED    2 0
 HV1131
 HV1131.Superseded values are not recommended for survey control.
 HV1131
 HV1131.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1131.See file dsdata.pdf to determine how the superseded data were derived.
 HV1131
 HV1131_MARKER: DE = TRAVERSE STATION DISK
 HV1131_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1131_STAMPING: DALE 1958
 HV1131_MARK LOGO: CGS
 HV1131_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1131+STABILITY: SURFACE MOTION
 HV1131
 HV1131  HISTORY     - Date     Condition        Report By
 HV1131  HISTORY     - 1958     MONUMENTED       CGS
 HV1131  HISTORY     - 1958     GOOD             CGS
 HV1131
 HV1131                          STATION DESCRIPTION
 HV1131
 HV1131'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1131'STATION IS ABOUT 9-1/2 MILES NORTHEAST OF THE CENTER OF
 HV1131'WASHINGTON D.C., ABOUT 3.0 MILES EAST OF COLLEGE PARK AND ABOUT
 HV1131'0.55 MILE EAST OF OVERPASS WHERE GLENN DALE ROAD PASSES OVER
 HV1131'WASHINGTON-BALTIMORE PARKWAY.  STATION IS 43 FEET WEST OF
 HV1131'APPROXIMATE CENTERLINE OF GRAVEL ROAD, 87 FEET NORTH OF
 HV1131'APPROXIMATE CENTERLINE OF ROAD AND 2-1/2 FEET NORTH-NORTHWEST
 HV1131'OF WITNESS POST.  THE MARK IS A STANDARD TRAVERSE DISK SET IN
 HV1131'A 12X12 INCH CONCRETE MONUMENT, PROJECTS ABOUT 2 INCHES AND
 HV1131'THE DISK IS STAMPED DALE 1958.
 HV1131'
 HV1131'TO REACH FROM THE RAILROAD DEPOT IN BELTSVILLE, GO SOUTHWESTERLY
 HV1131'AND SOUTHERLY ON U.S. HIGHWAY NO. 1 FOR 3.0 MILES TO TRAFFIC
 HV1131'LIGHT AT JUNCTION OF U.S. HIGHWAY NO. 1 AND STATE HIGHWAY NO.
 HV1131'430.  TURN LEFT AND GO EASTERLY ON STATE HIGHWAY NO. 430 FOR
 HV1131'1.65 MILE TO INTERSECTION OF NEW DUAL HIGHWAY.  CROSS NEW DUAL
 HV1131'HIGHWAY AND CONTINUE EASTERLY ON GLENN DALE ROAD FOR 1.0 MILE
 HV1131'TO OVERPASS AT WASHINGTON-BALTIMORE PARKWAY.  CROSS OVERPASS
 HV1131'AND GO 0.1 MILE TO GRAVEL ROAD RIGHT.  TURN RIGHT AND GO
 HV1131'SOUTHERLY ON GRAVEL ROAD FOR 0.15 MILE TO GRAVEL SIDE ROAD
 HV1131'LEFT.  TURN LEFT AND GO EASTERLY ON GRAVEL AND SURFACED ROAD FOR
 HV1131'0.45 MILE TO SIDE ROAD LEFT AND STATION AS DESCRIBED.
 HV1131'
 HV1131'THIS TRAVERSE STATION IS THE AZIMUTH MARK FOR TRIANGULATION
 HV1131'STATION GLENN 1958 AND WAS UNOCCUPIED.
 HV1131
 HV1131                          STATION RECOVERY (1958)
 HV1131
 HV1131'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV1131'2 MI N FROM LANHAM.
 HV1131'ABOUT 1.1 MILES NORTH ALONG THE PRINCE GARDENS PARKWAY FROM
 HV1131'THE LANHAM SCHOLL AT LANHAM, THENCE 0.2 MILE WEST ALONG GOOD
 HV1131'LUCK ROAD, THENCE 0.7 MILE NORTH ALONG A GRAVEL ROAD, AT THE
 HV1131'SCHROM AIRPORT, NEAR THE JUNCTION OF RUNWAY AND A GRAVELED ROAD
 HV1131'LEADING EAST, 47 1/2 FEET EAST OF THE EAST EDGE OF THE RUNWAY,
 HV1131'44 1/2 FEET NORTH OF THE CENTER LINE OF THE ROAD, 2.3 FEET
 HV1131'NORTH OF A WHITE WOODEN WITNESS POST, SET IN THE TOP OF A
 HV1131'CONCRETE POST PROJECTING 3 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4581 ***********************************************************************
 JV4581  DESIGNATION -  DALE
 JV4581  PID         -  JV4581
 JV4581  STATE/COUNTY-  MD/MONTGOMERY
 JV4581  COUNTRY     -  US
 JV4581  USGS QUAD   -  URBANA (2016)
 JV4581
 JV4581                         *CURRENT SURVEY CONTROL
 JV4581  ______________________________________________________________________
 JV4581* NAD 83(1993) POSITION- 39 17 15.88690(N) 077 15 42.17189(W)   ADJUSTED
 JV4581* NAVD 88 ORTHO HEIGHT -   209.    (meters)      686.    (feet) SCALED
 JV4581  ______________________________________________________________________
 JV4581  GEOID HEIGHT    -        -31.978 (meters)                     GEOID18
 JV4581  LAPLACE CORR    -          4.73  (seconds)                    DEFLEC18
 JV4581  HORZ ORDER      -  SECOND
 JV4581
 JV4581.The horizontal coordinates were established by classical geodetic methods
 JV4581.and adjusted by the National Geodetic Survey in November 1994.
 JV4581
 JV4581.The orthometric height was scaled from a topographic map.
 JV4581
 JV4581.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4581.GEOID18 height accuracy estimate available here.
 JV4581
 JV4581.Click photographs - Photos may exist for this station.
 JV4581
 JV4581.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4581
 JV4581. The following values were computed from the NAD 83(1993) position.
 JV4581
 JV4581;                    North         East     Units Scale Factor Converg.
 JV4581;SPC MD       -   179,982.445   377,421.316   MT  0.99997564   -0 09 51.3
 JV4581;SPC MD       -   590,492.40  1,238,256.43   sFT  0.99997564   -0 09 51.3
 JV4581;UTM  18      - 4,351,147.439   304,939.756   MT  1.00006850   -1 25 57.4
 JV4581
 JV4581!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4581!SPC MD       -   0.99997226  x   0.99997564  =   0.99994790
 JV4581!UTM  18      -   0.99997226  x   1.00006850  =   1.00004076
 JV4581
 JV4581:                Primary Azimuth Mark                     Grid Az
 JV4581:SPC MD       -  CENTER                                   314 10 45.3
 JV4581:UTM  18      -  CENTER                                   315 26 51.4
 JV4581
 JV4581_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0493951147(NAD 83)
 JV4581
 JV4581|---------------------------------------------------------------------|
 JV4581| PID    Reference Object                     Distance      Geod. Az  |
 JV4581|                                                           dddmmss.s |
 JV4581| JV4582 DALE RM 1                            41.969 METERS 02607     |
 JV4581| AA5750 DALE AZ MK                          APPROX. 0.8 KM 1365312.9 |
 JV4581| CJ9607 DALE RM 2                            30.571 METERS 29932     |
 JV4581| JV4580 CENTER                              APPROX. 7.0 KM 3140054.0 |
 JV4581|---------------------------------------------------------------------|
 JV4581
 JV4581                          SUPERSEDED SURVEY CONTROL
 JV4581
 JV4581  NAD 83(1991)-  39 17 15.88622(N)    077 15 42.17182(W) AD(       ) 2
 JV4581  NAD 83(1986)-  39 17 15.88627(N)    077 15 42.18247(W) AD(       ) 2
 JV4581  NAD 27      -  39 17 15.50813(N)    077 15 43.23596(W) AD(       ) 2
 JV4581
 JV4581.Superseded values are not recommended for survey control.
 JV4581
 JV4581.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4581.See file dsdata.pdf to determine how the superseded data were derived.
 JV4581
 JV4581_MARKER: DS = TRIANGULATION STATION DISK
 JV4581_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4581_STAMPING: DALE 1946
 JV4581_MARK LOGO: CGS
 JV4581_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4581+STABILITY: SURFACE MOTION
 JV4581
 JV4581  HISTORY     - Date     Condition        Report By
 JV4581  HISTORY     - 1943     MONUMENTED       CGS
 JV4581  HISTORY     - 1969     GOOD             CGS
 JV4581
 JV4581                          STATION DESCRIPTION
 JV4581
 JV4581'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4581'THE STATION IS LOCATED IN THE VILLAGE OF LEWISDALE ON THE HIGHEST
 JV4581'POINT IN THE VICINITY, ON LAND OWNED BY T.D. DAY.  IT IS
 JV4581'SITUATED IN THE ENE CORNER OF A CULTIVATED FIELD, 58.6 FEET SE
 JV4581'OF A LONE CHERRY TREE, 58.5 FEET W OF THE CENTER OF A MACADAM
 JV4581'ROAD, 47.1 FEET SW OF A POWER-LINE POLE AND 97 FEET N OF A WATER
 JV4581'PUMP.  IT IS STAMPED DALE 1943 AND IS 16 INCHES BELOW THE
 JV4581'SURFACE OF THE GROUND.
 JV4581'
 JV4581'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV4581'DISKS SET IN CONCRETE.
 JV4581'
 JV4581'REFERENCE MARK NO. 1 IS NE OF THE STATION, AT THE WSW EDGE OF
 JV4581'A GARDEN PLOT, 56 FEET E OF THE CENTER OF THE MACADAM ROAD, 41
 JV4581'FEET NW OF A POWER-LINE GUY POLE.  IT IS STAMPED DALE NO. 1 1943
 JV4581'AND PROJECTS 8 INCHES.
 JV4581'
 JV4581'REFERENCE MARK NO. 2 IS NW OF THE STATION AT THE W EDGE OF A
 JV4581'CULTIVATED FIELD, 23.5 FEET WSW OF A LONE APPLE TREE, 25.9 FEET
 JV4581'S OF THE S CORNER OF A SMALL OUT BUILDING.  IT IS STAMPED DALE
 JV4581'NO. 2 1943 AND IS FLUSH WITH THE SURFACE OF THE GROUND.
 JV4581'
 JV4581'THE AZIMUTH MARK IS 0.6 MILE BY ROAD SE OF THE STATION, 16.25
 JV4581'FEET S OF THE CENTER OF THE MACADAM ROAD, 1.5 FEET N OF A
 JV4581'FENCE.  IT IS STAMPED DALE 1943 AND PROJECTS 10 INCHES.
 JV4581'
 JV4581'A UNITED STATES COAST AND GEODETIC SURVEY BENCH MARK IS 0.45
 JV4581'MILE BY ROAD SE OF THE STATION, 1.6 FEET SW OF A FENCE, 15.3 FEET
 JV4581'W OF A FENCE CORNER, 20.6 FEET NE OF THE CENTER OF THE ROAD
 JV4581'LEADING TO THE STATION, 43.9 FEET NE OF A POWER-LINE POLE.  IT IS
 JV4581'A BRONZE DISK SET FLUSH IN THE CENTER OF A 6- BY 6-INCH CONCRETE
 JV4581'POST THAT PROJECTS 8 INCHES.  IT IS STAMPED Q 91 1942.  IT IS
 JV4581'WITNESSED BY 4- BY 4-INCH WHITE POST.
 JV4581'
 JV4581'TO REACH THE STATION FROM THE TOWN OF DAMASCUS GO S ON STATE
 JV4581'HIGHWAY 27 FOR 0.4 MILE TO A MACADAM ROAD RIGHT.  TURN RIGHT AND
 JV4581'GO 0.9 MILE TO A T-ROAD LEFT.  TURN LEFT AND GO 2.6 MILES TO THE
 JV4581'STATION ON THE LEFT.
 JV4581'
 JV4581'A 37-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT CENTER.
 JV4581'
 JV4581'A 4-FOOT STAND WILL SEE AN 87-FOOT LIGHT AT RIDGE.
 JV4581'
 JV4581'A 4-FOOT STAND WILL SEE A 100-FOOT LIGHT AT DAMASCUS.
 JV4581'
 JV4581'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV4581
 JV4581                          STATION RECOVERY (1969)
 JV4581
 JV4581'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4581'THE STATION MARK, REFERENCE MARKS 1, 2 AND THE AZIMUTH MARK WERE
 JV4581'RECOVERED IN GOOD CONDITION AS DESCRIBED BY G.W.L. IN 1943.
 JV4581'
 JV4581'DALE 1943 RM 1 WAS ESTABLISHED BECAUSE OF THE PROXIMITY OF A FRUIT
 JV4581'TREE AT THE STATION MARK.  THE PROPERTY OWNER, T.D. DAY, OBJECTED
 JV4581'TO THE REMOVAL OF THIS TREE.
 JV4581'
 JV4581'A TRAVERSE CONNECTION WAS MADE TO STATION DALE 1943 RM 1 THE
 JV4581'DISTANCE BEING 41.969 METERS, (137.69 FEET), NORTH-NORTHEAST OF
 JV4581'STATION DALE 1943.
 JV4581'
 JV4581'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN THE VILLAGE
 JV4581'OF LEWISDALE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA5750 ***********************************************************************
 AA5750  DESIGNATION -  DALE AZ MK
 AA5750  PID         -  AA5750
 AA5750  STATE/COUNTY-  MD/MONTGOMERY
 AA5750  COUNTRY     -  US
 AA5750  USGS QUAD   -  URBANA (2016)
 AA5750
 AA5750                         *CURRENT SURVEY CONTROL
 AA5750  ______________________________________________________________________
 AA5750* NAD 83(2011) POSITION- 39 16 57.34957(N) 077 15 19.85273(W)   ADJUSTED
 AA5750* NAD 83(2011) ELLIP HT-   171.085 (meters)        (06/27/12)   ADJUSTED
 AA5750* NAD 83(2011) EPOCH   -  2010.00
 AA5750* NAVD 88 ORTHO HEIGHT -   203.1   (meters)      666.    (feet) GPS OBS
 AA5750  ______________________________________________________________________
 AA5750  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA5750  GEOID HEIGHT    -         -32.31 (meters)                     GEOID93
 AA5750  GEOID HEIGHT    -        -31.952 (meters)                     GEOID18
 AA5750  NAD 83(2011) X  -  1,090,588.058 (meters)                     COMP
 AA5750  NAD 83(2011) Y  - -4,821,861.695 (meters)                     COMP
 AA5750  NAD 83(2011) Z  -  4,016,758.278 (meters)                     COMP
 AA5750  LAPLACE CORR    -          4.60  (seconds)                    DEFLEC18
 AA5750
 AA5750  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA5750  Standards:
 AA5750         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA5750            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA5750  -------------------------------------------------------------------
 AA5750  NETWORK    2.77   3.94           1.22   1.03   2.01     -0.01699201
 AA5750  -------------------------------------------------------------------
 AA5750  Click here for local accuracies and other accuracy information.
 AA5750
 AA5750.The horizontal coordinates were established by GPS observations
 AA5750.and adjusted by the National Geodetic Survey in June 2012.
 AA5750
 AA5750.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA5750.been affixed to the stable North American tectonic plate. See 
 AA5750.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA5750
 AA5750.The horizontal coordinates are valid at the epoch date displayed above
 AA5750.which is a decimal equivalence of Year/Month/Day.
 AA5750
 AA5750.The orthometric height was determined by GPS observations and a
 AA5750.high-resolution geoid model.
 AA5750
 AA5750.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA5750.GEOID18 height accuracy estimate available here.
 AA5750
 AA5750.Click photographs - Photos may exist for this station.
 AA5750
 AA5750.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA5750
 AA5750.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA5750
 AA5750.The ellipsoidal height was determined by GPS observations
 AA5750.and is referenced to NAD 83.
 AA5750
 AA5750. The following values were computed from the NAD 83(2011) position.
 AA5750
 AA5750;                    North         East     Units Scale Factor Converg.
 AA5750;SPC MD       -   179,409.270   377,954.582   MT  0.99997500   -0 09 37.3
 AA5750;SPC MD       -   588,611.91  1,240,005.99   sFT  0.99997500   -0 09 37.3
 AA5750;UTM  18      - 4,350,562.548   305,460.254   MT  1.00006600   -1 25 42.7
 AA5750
 AA5750!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA5750!SPC MD       -   0.99997316  x   0.99997500  =   0.99994816
 AA5750!UTM  18      -   0.99997316  x   1.00006600  =   1.00003916
 AA5750
 AA5750_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0546050562(NAD 83)
 AA5750
 AA5750                          SUPERSEDED SURVEY CONTROL
 AA5750
 AA5750  NAD 83(2007)-  39 16 57.34971(N)    077 15 19.85318(W) AD(2002.00) 0
 AA5750  ELLIP H (02/10/07)  171.141  (m)                       GP(2002.00)    
 AA5750  ELLIP H (08/30/02)  171.155  (m)                       GP(       ) 4 2
 AA5750  NAD 83(1991)-  39 16 57.35024(N)    077 15 19.85339(W) AD(       ) 1
 AA5750  ELLIP H (06/13/95)  171.111  (m)                       GP(       ) 4 2
 AA5750
 AA5750.Superseded values are not recommended for survey control.
 AA5750
 AA5750.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA5750.See file dsdata.pdf to determine how the superseded data were derived.
 AA5750
 AA5750_MARKER: DZ = AZIMUTH MARK DISK
 AA5750_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA5750_STAMPING: DALE 1943
 AA5750_MARK LOGO: CGS
 AA5750_PROJECTION: PROJECTING 10 CENTIMETERS
 AA5750_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AA5750_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA5750+STABILITY: SURFACE MOTION
 AA5750_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA5750+SATELLITE: SATELLITE OBSERVATIONS - April 17, 2013
 AA5750
 AA5750  HISTORY     - Date     Condition        Report By
 AA5750  HISTORY     - 1961     MONUMENTED       NONE
 AA5750  HISTORY     - 20130417 GOOD             BASE9
 AA5750
 AA5750                          STATION DESCRIPTION
 AA5750
 AA5750'DESCRIBED BY NATIONAL GEODETIC SURVEY 1961
 AA5750'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND, APPROXIMATELY
 AA5750'11.0 MI (17.7 KM) NORTH OF THE CITY OF GAITHERSBURG.  TO REACH THE
 AA5750'STATION FROM THE OVERPASS OF CLARKSBURG ROAD (S.R. 121) AT EXIT 18 OF
 AA5750'I.S. 270, GO NORTHEAST 0.6 MI (1.0 KM) ALONG CLARKSBURG ROAD TO THE
 AA5750'INTERSECTION WITH FREDERICK ROAD (S.R. 355).  CONTINUE NORTHEAST ON
 AA5750'CLARKSBURG ROAD FOR 0.6 MI (1.0 KM) TO A BEND TO THE RIGHT WHICH
 AA5750'BECOMES BURNT HILL ROAD AND THE JUNCTION WITH CLARKSBURG ROAD STRAIGHT
 AA5750'AHEAD.  BEAR RIGHT AND GO NORTHEAST 2.9 MI (4.7 KM) ALONG BURNT HILL
 AA5750'ROAD TO THE T-INTERSECTION WITH PRICES DISTILLERY ROAD. TURN LEFT AND
 AA5750'GO WEST 0.5 MI (0.8 KM) ALONG PRICES DISTILLERY ROAD TO THE STATION ON
 AA5750'THE LEFT.
 AA5750'
 AA5750'THE STATION IS AN AZIMUTH DISK SET IN THE TOP OF A CONCRETE MONUMENT
 AA5750'WHICH IS 4 INCHES ABOVE GROUND LEVEL, AND STAMPED 'DALE 1943'.  THE
 AA5750'DISK IS LOCATED 67.3 FT (20.5 M) WEST-NORTHWEST OF POWER POLE NO.
 AA5750'100A, 18.6 FT (5.7 M) SOUTH-SOUTHWEST OF THE CENTERLINE OF THE ROAD,
 AA5750'73.7 FT (22.5 M) WEST OF THE MAILBOX NO. 12310, 81.8 FT (24.9 M)
 AA5750'SOUTHEAST OF THE POWER POLE NO. 88, AND 2.0 FT (0.6 M) EAST-SOUTHEAST
 AA5750'OF A CARSONITE WITNESS POST.
 AA5750
 AA5750                          STATION RECOVERY (2013)
 AA5750
 AA5750'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 AA5750'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4582 ***********************************************************************
 JV4582  DESIGNATION -  DALE RM 1
 JV4582  PID         -  JV4582
 JV4582  STATE/COUNTY-  MD/MONTGOMERY
 JV4582  COUNTRY     -  US
 JV4582  USGS QUAD   -  URBANA (2016)
 JV4582
 JV4582                         *CURRENT SURVEY CONTROL
 JV4582  ______________________________________________________________________
 JV4582* NAD 83(1993) POSITION- 39 17 17.10880(N) 077 15 41.40083(W)   ADJUSTED
 JV4582* NAVD 88 ORTHO HEIGHT -   208.2   (meters)      683.    (feet) VERTCON3
 JV4582  ______________________________________________________________________
 JV4582  GEOID HEIGHT    -        -31.978 (meters)                     GEOID18
 JV4582  LAPLACE CORR    -          4.73  (seconds)                    DEFLEC18
 JV4582  HORZ ORDER      -  FIRST
 JV4582
 JV4582.The horizontal coordinates were established by classical geodetic methods
 JV4582.and adjusted by the National Geodetic Survey in November 1994.
 JV4582
 JV4582.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4582.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4582
 JV4582.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4582.GEOID18 height accuracy estimate available here.
 JV4582
 JV4582.Click photographs - Photos may exist for this station.
 JV4582
 JV4582.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4582
 JV4582. The following values were computed from the NAD 83(1993) position.
 JV4582
 JV4582;                    North         East     Units Scale Factor Converg.
 JV4582;SPC MD       -   180,020.073   377,439.902   MT  0.99997568   -0 09 50.9
 JV4582;SPC MD       -   590,615.86  1,238,317.41   sFT  0.99997568   -0 09 50.9
 JV4582;UTM  18      - 4,351,184.650   304,959.173   MT  1.00006841   -1 25 56.9
 JV4582
 JV4582!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4582!SPC MD       -   0.99997235  x   0.99997568  =   0.99994803
 JV4582!UTM  18      -   0.99997235  x   1.00006841  =   1.00004076
 JV4582
 JV4582:                Primary Azimuth Mark                     Grid Az
 JV4582:SPC MD       -  DALE AZ MK                               139 52 01.8
 JV4582:UTM  18      -  DALE AZ MK                               141 08 07.8
 JV4582
 JV4582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0495951184(NAD 83)
 JV4582
 JV4582|---------------------------------------------------------------------|
 JV4582| PID    Reference Object                     Distance      Geod. Az  |
 JV4582|                                                           dddmmss.s |
 JV4582| JV4227 DAMASCUS METH CH SPIRE              APPROX. 5.3 KM 0924227.6 |
 JV4582| AA5750 DALE AZ MK                          APPROX. 0.8 KM 1394210.9 |
 JV4582| JV4581 DALE                                 41.976 METERS 20607     |
 JV4582|---------------------------------------------------------------------|
 JV4582
 JV4582                          SUPERSEDED SURVEY CONTROL
 JV4582
 JV4582  NAD 83(1991)-  39 17 17.10812(N)    077 15 41.40075(W) AD(       ) 1
 JV4582  NAD 83(1986)-  39 17 17.10836(N)    077 15 41.41129(W) AD(       ) 1
 JV4582  NAD 27      -  39 17 16.73000(N)    077 15 42.46480(W) AD(       ) 1
 JV4582  NGVD 29 (07/19/86)  208.4    (m)          684.     (f) VERT ANG       
 JV4582
 JV4582.Superseded values are not recommended for survey control.
 JV4582
 JV4582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4582.See file dsdata.pdf to determine how the superseded data were derived.
 JV4582
 JV4582_MARKER: DR = REFERENCE MARK DISK
 JV4582_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4582_STAMPING: DALE 1943 NO 1
 JV4582_MARK LOGO: CGS
 JV4582_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4582+STABILITY: SURFACE MOTION
 JV4582
 JV4582  HISTORY     - Date     Condition        Report By
 JV4582  HISTORY     - 1969     MONUMENTED       CGS
 JV4582
 JV4582                          STATION DESCRIPTION
 JV4582
 JV4582'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4582'DALE 1943 WAS NOT OCCUPIED AT THIS TIME DUE TO THE LOCATION OF A
 JV4582'TREE.
 JV4582'
 JV4582'THE STATION IS IN THE VILLAGE OF LEWISDALE ON THE HIGHEST POINT
 JV4582'IN THE VICINITY AND ON PROPERTY OWNED BY T.D. DAY.
 JV4582'
 JV4582'TO REACH THE STATION FROM THE POST OFFICE IN DAMASCUS, GO
 JV4582'SOUTH ON STATE HIGHWAY 27 FOR 0.4 MILE TO A SIDE ROAD RIGHT,
 JV4582'STATE HIGHWAY 122.  TURN RIGHT AND GO WEST ON STATE HIGHWAY 122
 JV4582'FOR 0.9 MILE TO A SIDE ROAD LEFT, STATE HIGHWAY 123.  TURN LEFT
 JV4582'AND GO SOUTH THEN WEST ON STATE HIGHWAY 123 FOR 2.1 MILE TO THE
 JV4582'AZIMUTH MARK ON THE LEFT.  CONTINUE AHEAD WESTERLY ON STATE
 JV4582'HIGHWAY 123 FOR 0.55 MILE TO THE STATION ON THE RIGHT.
 JV4582'
 JV4582'THE STATION MARK IS A STANDARD REFERENCE MARK DISK, STAMPED
 JV4582'DALE NO 1 1943, SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST
 JV4582'THAT PROJECTS 4 INCHES ABOVE SURFACE OF THE GROUND.  IT IS 58.0
 JV4582'FEET EAST OF THE CENTERLINE OF STATE HIGHWAY 123, 42.1 FEET
 JV4582'NORTH-NORTHWEST OF A POWER LINE GUY POLE AND 6.0 FEET WEST OF
 JV4582'A FENCE.
 JV4582'
 JV4582'DALE 1943 IS A STANDARD DISK, STAMPED DALE 1943, SET IN THE TOP
 JV4582'OF A 12 INCH SQUARE CONCRETE POST THAT IS 16 INCHES BELOW THE
 JV4582'SURFACE OF THE GROUND.  IT IS 57.0 FEET WEST OF THE CENTER LINE
 JV4582'OF STATE HIGHWAY 123, 38.7 NORTH OF THE NORTHEAST CORNER OF A
 JV4582'HOUSE, 7.5 FEET SOUTHEAST OF A SMALL TREE AND ABOUT 3 FEET LOWER
 JV4582'IN ELEVATION THAN THE STATION.
 JV4582'
 JV4582'AZIMUTH MARK IS A STANDARD DISK, STAMPED DALE 1943, SET IN THE
 JV4582'TOP OF A 12 INCH SQUARE CONCRETE POST THAT PROJECTS 3 INCHES
 JV4582'ABOVE THE SURFACE OF THE GROUND.  IT IS 57.0 FEET NORTHWEST OF
 JV4582'THE CENTER LINE OF A GRAVELED DRIVE, 18.0 FEET SOUTHWEST OF THE
 JV4582'CENTER LINE OF STATE HIGHWAY 123 AND 1.4 FEET NORTHWEST OF THE
 JV4582'WITNESS POST.
 JV4582'
 JV4582'REFERENCE MARK 1 TO REFERENCE MARK 2 WAS OBSTRUCTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5882 ***********************************************************************
 JV5882  DESIGNATION -  DAM
 JV5882  PID         -  JV5882
 JV5882  STATE/COUNTY-  MD/HOWARD
 JV5882  COUNTRY     -  US
 JV5882  USGS QUAD   -  LAUREL (2016)
 JV5882
 JV5882                         *CURRENT SURVEY CONTROL
 JV5882  ______________________________________________________________________
 JV5882* NAD 83(1991) POSITION- 39 07 03.58422(N) 076 52 21.08376(W)   ADJUSTED
 JV5882* NAVD 88 ORTHO HEIGHT -    87.    (meters)      285.    (feet) SCALED
 JV5882  ______________________________________________________________________
 JV5882  GEOID HEIGHT    -        -32.183 (meters)                     GEOID18
 JV5882  LAPLACE CORR    -         -4.20  (seconds)                    DEFLEC18
 JV5882  HORZ ORDER      -  THIRD
 JV5882
 JV5882.The horizontal coordinates were established by classical geodetic methods
 JV5882.and adjusted by the National Geodetic Survey in January 1992.
 JV5882
 JV5882.The orthometric height was scaled from a topographic map.
 JV5882
 JV5882.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5882.GEOID18 height accuracy estimate available here.
 JV5882
 JV5882.Click photographs - Photos may exist for this station.
 JV5882
 JV5882.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5882
 JV5882. The following values were computed from the NAD 83(1991) position.
 JV5882
 JV5882;                    North         East     Units Scale Factor Converg.
 JV5882;SPC MD       -   161,075.786   411,024.080   MT  0.99995873   +0 04 48.0
 JV5882;SPC MD       -   528,462.81  1,348,501.50   sFT  0.99995873   +0 04 48.0
 JV5882;UTM  18      - 4,331,503.109   338,117.877   MT  0.99992268   -1 10 54.0
 JV5882
 JV5882!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5882!SPC MD       -   0.99999143  x   0.99995873  =   0.99995016
 JV5882!UTM  18      -   0.99999143  x   0.99992268  =   0.99991411
 JV5882
 JV5882:                Primary Azimuth Mark                     Grid Az
 JV5882:SPC MD       -  DAM AZ MK                                338 19 48.6
 JV5882:UTM  18      -  DAM AZ MK                                339 35 30.6
 JV5882
 JV5882_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3811731503(NAD 83)
 JV5882
 JV5882|---------------------------------------------------------------------|
 JV5882| PID    Reference Object                     Distance      Geod. Az  |
 JV5882|                                                           dddmmss.s |
 JV5882| CB1136 DAM RM 1                             23.740 METERS 01048     |
 JV5882| JV5880 LAUREL MUN TANK                     APPROX. 1.3 KM 1475920.4 |
 JV5882| JV5887 LAUREL SANITORIUM STACK             APPROX. 2.6 KM 1581124.6 |
 JV5882| JV5885 LAUREL WATER TANK=COGGINS           APPROX. 2.6 KM 1592331.9 |
 JV5882| CB1137 DAM RM 2                             27.960 METERS 21027     |
 JV5882| CB1135 DAM AZ MK                                          3382436.6 |
 JV5882|---------------------------------------------------------------------|
 JV5882
 JV5882                          SUPERSEDED SURVEY CONTROL
 JV5882
 JV5882  NAD 83(1986)-  39 07 03.58285(N)    076 52 21.09357(W) AD(       ) 3
 JV5882  NAD 27      -  39 07 03.19321(N)    076 52 22.19163(W) AD(       ) 3
 JV5882
 JV5882.Superseded values are not recommended for survey control.
 JV5882
 JV5882.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5882.See file dsdata.pdf to determine how the superseded data were derived.
 JV5882
 JV5882_MARKER: DS = TRIANGULATION STATION DISK
 JV5882_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5882_STAMPING: DAM 1957
 JV5882_MARK LOGO: CGS
 JV5882_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5882+STABILITY: SURFACE MOTION
 JV5882
 JV5882  HISTORY     - Date     Condition        Report By
 JV5882  HISTORY     - 1957     MONUMENTED       CGS
 JV5882
 JV5882                          STATION DESCRIPTION
 JV5882
 JV5882'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5882'STATION IS LOCATED ABOUT 1-1/2 MILES NORTHWEST OF LAUREL AND ABOUT
 JV5882'100 YARDS EAST OF THE PATUXENT RIVER DAM.  STATION IS 16 FEET WEST
 JV5882'OF EDGE OF CLEARING AND 15 FEET SOUTHWEST OF WITNESS POST.  THE
 JV5882'MARK IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED DAM 1957.
 JV5882'
 JV5882'REFERENCE MARK NO. 1 IS IN THE EAST EDGE OF CLEARING.  THE MARK
 JV5882'PROJECTS ABOUT 6 INCHES AND THE DISK IS STAMPED DAM NO 1 1957.
 JV5882'
 JV5882'REFERENCE MARK NO. 2 IS 6 FEET NORTH OF FENCE AND IN THE SOUTH
 JV5882'EDGE OF CLEARING.  THE MARK PROJECTS ABOUT 6 INCHES AND THE DISK
 JV5882'IS STAMPED DAM NO 2 1957.
 JV5882'
 JV5882'AZIMUTH MARK IS 50 FEET NORTHWEST OF THE APPROXIMATE CENTER OF
 JV5882'GRAVEL ROAD AND 2 FEET WEST OF WITNESS POST.  THE MARK PROJECTS
 JV5882'ABOUT 6 INCHES AND THE DISK IS STAMPED DAM 1957.
 JV5882'
 JV5882'TO REACH FROM THE POST OFFICE IN LAUREL GO WEST ON MAIN STREET FOR
 JV5882'0.7 MILE TO CROSS STREETS.  TURN RIGHT ON STATE HIGHWAY 216 FOR
 JV5882'0.75 MILE TO FORKS.  TAKE RIGHT FORK FOR 0.15 MILE TO SIDE ROAD
 JV5882'LEFT.  TURN LEFT AND GO 0.3 MILE TO FORKS.  TAKE LEFT FORK FOR
 JV5882'0.25 MILE TO LOCKED BOARD GATE ON THE LEFT.  PASS THROUGH GATE
 JV5882'AND FOLLOW GRAVEL ROAD FOR 0.25 MILE TO THE AZIMUTH MARK ON THE
 JV5882'RIGHT AS DESCRIBED.  CONTINUE ON GRAVEL ROAD FOR 0.15 MILE.
 JV5882'BEAR LEFT OFF ROAD AND GO ACROSS FIELD FOR 0.05 MILE TO STATION
 JV5882'AS DESCRIBED.
 JV5882'
 JV5882'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4212 ***********************************************************************
 JV4212  DESIGNATION -  DAMASCUS
 JV4212  PID         -  JV4212
 JV4212  STATE/COUNTY-  MD/MONTGOMERY
 JV4212  COUNTRY     -  US
 JV4212  USGS QUAD   -  DAMASCUS (2016)
 JV4212
 JV4212                         *CURRENT SURVEY CONTROL
 JV4212  ______________________________________________________________________
 JV4212* NAD 83(1993) POSITION- 39 17 06.20439(N) 077 12 41.03840(W)   ADJUSTED
 JV4212* NAVD 88 ORTHO HEIGHT -   254.    (meters)      833.    (feet) SCALED
 JV4212  ______________________________________________________________________
 JV4212  GEOID HEIGHT    -        -31.868 (meters)                     GEOID18
 JV4212  LAPLACE CORR    -          3.08  (seconds)                    DEFLEC18
 JV4212  HORZ ORDER      -  SECOND
 JV4212
 JV4212.The horizontal coordinates were established by classical geodetic methods
 JV4212.and adjusted by the National Geodetic Survey in November 1994.
 JV4212
 JV4212.The orthometric height was scaled from a topographic map.
 JV4212
 JV4212.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4212.GEOID18 height accuracy estimate available here.
 JV4212
 JV4212.Click photographs - Photos may exist for this station.
 JV4212
 JV4212.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4212
 JV4212. The following values were computed from the NAD 83(1993) position.
 JV4212
 JV4212;                    North         East     Units Scale Factor Converg.
 JV4212;SPC MD       -   179,672.604   381,761.390   MT  0.99997530   -0 07 57.7
 JV4212;SPC MD       -   589,475.87  1,252,495.49   sFT  0.99997530   -0 07 57.7
 JV4212;UTM  18      - 4,350,741.588   309,272.269   MT  1.00004792   -1 24 02.3
 JV4212
 JV4212!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4212!SPC MD       -   0.99996518  x   0.99997530  =   0.99994048
 JV4212!UTM  18      -   0.99996518  x   1.00004792  =   1.00001310
 JV4212
 JV4212:                Primary Azimuth Mark                     Grid Az
 JV4212:SPC MD       -  DAMASCUS AZ MK                           278 42 01.0
 JV4212:UTM  18      -  DAMASCUS AZ MK                           279 58 05.6
 JV4212
 JV4212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0927250741(NAD 83)
 JV4212
 JV4212|---------------------------------------------------------------------|
 JV4212| PID    Reference Object                     Distance      Geod. Az  |
 JV4212|                                                           dddmmss.s |
 JV4212| CJ9613 DAMASCUS RM 1                        25.412 METERS 11211     |
 JV4212| JV4238 DAMASCUS RM 2                        55.347 METERS 27128     |
 JV4212| CJ9612 DAMASCUS AZ MK                                     2783403.3 |
 JV4212|---------------------------------------------------------------------|
 JV4212
 JV4212                          SUPERSEDED SURVEY CONTROL
 JV4212
 JV4212  NAD 83(1991)-  39 17 06.20385(N)    077 12 41.03861(W) AD(       ) 2
 JV4212  NAD 83(1986)-  39 17 06.20402(N)    077 12 41.04891(W) AD(       ) 2
 JV4212  NAD 27      -  39 17 05.82578(N)    077 12 42.11043(W) AD(       ) 2
 JV4212
 JV4212.Superseded values are not recommended for survey control.
 JV4212
 JV4212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4212.See file dsdata.pdf to determine how the superseded data were derived.
 JV4212
 JV4212_MARKER: DS = TRIANGULATION STATION DISK
 JV4212_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4212_STAMPING: DAMASCUS 1943
 JV4212_MARK LOGO: CGS
 JV4212_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4212+STABILITY: SURFACE MOTION
 JV4212
 JV4212  HISTORY     - Date     Condition        Report By
 JV4212  HISTORY     - 1943     MONUMENTED       CGS
 JV4212  HISTORY     - 1953     SEE DESCRIPTION  CGS
 JV4212  HISTORY     - 19950621 MARK NOT FOUND   USPSQD
 JV4212
 JV4212                          STATION DESCRIPTION
 JV4212
 JV4212'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4212'THE STATION IS LOCATED ON THE GROUNDS OF THE DAMASCUS GRADE SCHOOL,
 JV4212'ABOUT 1/2 MILE SW OF THE TOWN OF DAMASCUS.  IT IS 75 YARDS SW OF THE
 JV4212'SW CORNER OF THE SCHOOL BUILDING, 47 FEET N OF THE CENTER OF STATE
 JV4212'HIGHWAY 122 AND 53 FEET W OF THE CENTER OF THE W SCHOOL DRIVE.  IT
 JV4212'IS STAMPED DAMASCUS 1943 AND IS FLUSH WITH THE SURFACE OF THE
 JV4212'GROUND.
 JV4212'
 JV4212'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE BRONZE DISKS SET
 JV4212'IN CONCRETE.
 JV4212'
 JV4212'REFERENCE MARK NO.1 IS ESE OF THE STATION, 19 FEET N OF THE
 JV4212'CENTER OF STATE HIGHWAY 122 AND 2 FEET W OF TELEPHONE POLE
 JV4212'NO. 16.  IT IS STAMPED DAMASCUS NO.1 1943 AND PROJECTS 6 INCHES.
 JV4212'
 JV4212'REFERENCE MARK NO.2 IS WSW OF THE STATION, 20 FEET N OF THE
 JV4212'CENTER OF STATE HIGHWAY 122 AND 48 FEET W OF TELEPHONE POLE
 JV4212'NO.18.  IT IS STAMPED DAMASCUS NO.2 1943 AND PROJECTS 6 INCHES.
 JV4212'
 JV4212'THE AZIMUTH MARK IS 0.2 MILE W OF THE STATION.  IT IS SET FLUSH
 JV4212'IN THE TOP OF A CONCRETE CULVERT, 1 FOOT W OF THE E END OF THE
 JV4212'CULVERT, 14 FEET S OF THE CENTER OF STATE HIGHWAY 122 AND 5 FEET
 JV4212'NW OF A POWER-LINE POLE.  IT IS STAMPED DAMASCUS 1943.
 JV4212'
 JV4212'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 27 AND
 JV4212'108 IN DAMASCUS GO SOUTHWESTERLY ON HIGHWAY 27 FOR 0.4 MILE.  THEN
 JV4212'TURN RIGHT ON STATE HIGHWAY 122 FOR 0.05 MILE TO THE SCHOOL ON THE
 JV4212'RIGHT AND THE STATION.
 JV4212'
 JV4212'A 15-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAYTON.
 JV4212'
 JV4212'A 37-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT RIDGE.
 JV4212'
 JV4212'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT LAYTON.
 JV4212'
 JV4212'A 64-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT FLORENCE.
 JV4212'
 JV4212'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT COOK.
 JV4212'
 JV4212'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STABLER 1869.
 JV4212'
 JV4212'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT GAITHERSBURG.
 JV4212'
 JV4212'A 74-FOOT LIGHT AT DALE IS VISIBLE FROM THE GROUND.
 JV4212'
 JV4212'AN 87-FOOT LIGHT AT CENTER IS VISIBLE FROM THE GROUND.
 JV4212'
 JV4212'AN 87-FOOT LIGHT AT BART 1939 IS VISIBLE FROM THE GROUND.
 JV4212'
 JV4212'A 74-FOOT TOWER AT WILBER IS VISIBLE FROM THE GROUND.
 JV4212'
 JV4212'A 64-FOOT TOWER WILL SEE A 10-FOOT LIGHT AT COMUS.
 JV4212'
 JV4212'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4212
 JV4212                          STATION RECOVERY (1953)
 JV4212
 JV4212'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (CEM)
 JV4212'THE STATION, REFERENCE MARKS 1 AND 2, AND THE AZIMUTH MARK WERE
 JV4212'RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV4212'
 JV4212'THE SURFACE STATION MARK IS A STANDARD DISK, STAMPED DAMASCUS
 JV4212'1943 AND SET IN THE TOP OF A CONCRETE POST.  IT WAS PULLED OUT AND
 JV4212'MOVED 51.206 M. W.  THE DISK WAS RESTAMPED DAMASCUS 2 1953.
 JV4212'
 JV4212'THE UNDERGROUND STATION MARK IS A STANDARD DISK, STAMPED DAMASCUS
 JV4212'1943 AND SET IN CONCRETE.  IT WAS DESTROYED.
 JV4212'
 JV4212'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED DAMASCUS NO 1 1943
 JV4212'AND SET IN THE TOP OF A CONCRETE POST.  IT WAS DESTROYED.
 JV4212'
 JV4212'(THE STATION AND REFERENCE MARK 1 WERE LOCATED IN A PROPOSED
 JV4212'PARKING LOT FOR A 1953 ADDITION TO THE SCHOOL AND WOULD HAVE BEEN
 JV4212'DESTROYED BY GRADING OPERATIONS IN CONNECTION THEREWITH.)
 JV4212'
 JV4212'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED DAMASCUS NO 2
 JV4212'1943 AND SET IN THE TOP OF A CONCRETE POST.  IT WAS UNDISTURBED.
 JV4212'
 JV4212'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED DAMASCUS 1943 AND
 JV4212'SET IN THE CONCRETE HEADWALL OF A CULVERT.  IT WAS UNDISTURBED.
 JV4212
 JV4212                          STATION RECOVERY (1995)
 JV4212
 JV4212'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4212'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4214 ***********************************************************************
 JV4214  DESIGNATION -  DAMASCUS 2
 JV4214  PID         -  JV4214
 JV4214  STATE/COUNTY-  MD/MONTGOMERY
 JV4214  COUNTRY     -  US
 JV4214  USGS QUAD   -  DAMASCUS (2016)
 JV4214
 JV4214                         *CURRENT SURVEY CONTROL
 JV4214  ______________________________________________________________________
 JV4214* NAD 83(1993) POSITION- 39 17 06.45036(N) 077 12 43.15334(W)   ADJUSTED
 JV4214* NAVD 88 ORTHO HEIGHT -   253.3   (meters)      831.    (feet) VERTCON3
 JV4214  ______________________________________________________________________
 JV4214  GEOID HEIGHT    -        -31.869 (meters)                     GEOID18
 JV4214  LAPLACE CORR    -          3.11  (seconds)                    DEFLEC18
 JV4214  HORZ ORDER      -  SECOND
 JV4214
 JV4214.The horizontal coordinates were established by classical geodetic methods
 JV4214.and adjusted by the National Geodetic Survey in November 1994.
 JV4214
 JV4214.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4214.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4214
 JV4214.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4214.GEOID18 height accuracy estimate available here.
 JV4214
 JV4214.Click photographs - Photos may exist for this station.
 JV4214
 JV4214.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4214
 JV4214. The following values were computed from the NAD 83(1993) position.
 JV4214
 JV4214;                    North         East     Units Scale Factor Converg.
 JV4214;SPC MD       -   179,680.307   381,710.723   MT  0.99997531   -0 07 59.0
 JV4214;SPC MD       -   589,501.14  1,252,329.26   sFT  0.99997531   -0 07 59.0
 JV4214;UTM  18      - 4,350,750.411   309,221.780   MT  1.00004815   -1 24 03.6
 JV4214
 JV4214!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4214!SPC MD       -   0.99996526  x   0.99997531  =   0.99994057
 JV4214!UTM  18      -   0.99996526  x   1.00004815  =   1.00001341
 JV4214
 JV4214:                Primary Azimuth Mark                     Grid Az
 JV4214:SPC MD       -  DAMASCUS AZ MK                           278 42 46.8
 JV4214:UTM  18      -  DAMASCUS AZ MK                           279 58 51.4
 JV4214
 JV4214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0922150750(NAD 83)
 JV4214
 JV4214|---------------------------------------------------------------------|
 JV4214| PID    Reference Object                     Distance      Geod. Az  |
 JV4214|                                                           dddmmss.s |
 JV4214| JV4212 DAMASCUS                             51.251 METERS 09831     |
 JV4214| JV4222 DAMASCUS 2 RM 4                      13.869 METERS 10723     |
 JV4214| JV4238 DAMASCUS RM 2                         7.725 METERS 21654     |
 JV4214| CJ9612 DAMASCUS AZ MK                                     2783447.8 |
 JV4214| CJ9614 DAMASCUS 2 AZ MK                                   2783526.8 |
 JV4214| CJ9615 DAMASCUS 2 RM 3                      20.435 METERS 30118     |
 JV4214|---------------------------------------------------------------------|
 JV4214
 JV4214                          SUPERSEDED SURVEY CONTROL
 JV4214
 JV4214  NAD 83(1991)-  39 17 06.44980(N)    077 12 43.15368(W) AD(       ) 2
 JV4214  NAD 83(1986)-  39 17 06.44999(N)    077 12 43.16401(W) AD(       ) 2
 JV4214  NAD 27      -  39 17 06.07178(N)    077 12 44.22343(W) AD(       ) 2
 JV4214  NGVD 29 (07/19/86)  253.5    (m)          832.     (f) VERT ANG       
 JV4214
 JV4214.Superseded values are not recommended for survey control.
 JV4214
 JV4214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4214.See file dsdata.pdf to determine how the superseded data were derived.
 JV4214
 JV4214_MARKER: DS = TRIANGULATION STATION DISK
 JV4214_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4214_STAMPING: DAMASCUS 2 1953
 JV4214_MARK LOGO: CGS
 JV4214_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4214+STABILITY: SURFACE MOTION
 JV4214
 JV4214  HISTORY     - Date     Condition        Report By
 JV4214  HISTORY     - 1953     MONUMENTED       CGS
 JV4214  HISTORY     - 1959     SEE DESCRIPTION  CGS
 JV4214  HISTORY     - 1969     GOOD             CGS
 JV4214  HISTORY     - 19950621 GOOD             USPSQD
 JV4214
 JV4214                          STATION DESCRIPTION
 JV4214
 JV4214'DESCRIBED BY COAST AND GEODETIC SURVEY 1953 (CEM)
 JV4214'THE STATION IS ABOUT 1/2 MI. SW OF DAMASCUS, NEAR THE SW CORNER
 JV4214'OF THE GROUNDS SURROUNDING THE DAMASCUS GRADE SCHOOL, 207.4
 JV4214'FT. SW OF THE SW CORNER OF THE 1953 ADDITION TO THE SCHOOL
 JV4214'BUILDING, 65 FT. E OF THE CUT BANK ABOVE THE ATHLETIC FIELD,
 JV4214'AND 42 FT. N OF THE CENTERLINE OF STATE HIGHWAY 122.
 JV4214'
 JV4214'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 27
 JV4214'AND 108 IN DAMASCUS, GO SW ON STATE HIGHWAY 27 FOR 0.4 MI. TO
 JV4214'STATE HIGHWAY 122.  TURN RIGHT (W) AND GO 0.1 MI. ALONG STATE
 JV4214'HIGHWAY 122 TO THE STATION ON THE RIGHT (N).
 JV4214'
 JV4214'THE STATION IS A STANDARD STATION DISK, STAMPED DAMASCUS 2
 JV4214'1953 AND SET IN THE TOP OF A SQUARE CONCRETE POST ABOUT
 JV4214'1 IN. UNDER GROUND.
 JV4214'
 JV4214'THE UNDERGROUND STATION MARK IS A STANDARD DISK, STAMPED
 JV4214'DAMASCUS 2 1953 AND SET IN CONCRETE ABOUT 3 FT. UNDER GROUND.
 JV4214'
 JV4214'REFERENCE MARK 2 IS 48 FT. W OF TELEPHONE POLE 18, 19 FT. N
 JV4214'OF THE CENTERLINE OF STATE HIGHWAY 122, AND ABOUT 2 FT. N OF THE
 JV4214'TOP OF AN 8-FT. BANK.  IT IS A STANDARD REFERENCE-MARK DISK,
 JV4214'STAMPED DAMASCUS NO 2 1943 AND SET IN THE TOP OF A SQUARE
 JV4214'CONCRETE POST PROJECTING ABOUT 6 IN. ABOVE GROUND.
 JV4214'
 JV4214'REFERENCE MARK 3 IS 65 FT. N OF THE CENTERLINE OF STATE
 JV4214'HIGHWAY 122.  IT IS A STANDARD REFERENCE-MARK DISK, STAMPED
 JV4214'DAMASCUS 2 NO 3 1953 AND SET IN THE NW CORNER OF THE TOP
 JV4214'CONCRETE LANDING OF THE S SET OF STEPS LEADING DOWN TO THE
 JV4214'ATHLETIC FIELD.
 JV4214'
 JV4214'THE AZIMUTH MARK IS ABOUT 0.2 MI. W OF THE STATION,
 JV4214'14 FT. S OF THE CENTERLINE OF STATE HIGHWAY 122, 5 FT. NW OF A
 JV4214'POWER-LINE POLE, AND 1 FT. W OF THE E END OF THE HEADWALL.  IT
 JV4214'IS A STANDARD AZIMUTH-MARK DISK, STAMPED DAMASCUS 1943 AND SET
 JV4214'IN THE S CONCRETE HEADWALL OF A CULVERT.
 JV4214
 JV4214                          STATION RECOVERY (1959)
 JV4214
 JV4214'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (WFD)
 JV4214'THE STATION MARK, AZIMUTH MARK, AND REFERENCE MARKS 2 AND 3
 JV4214'WERE RECOVERED AS DESCRIBED.  ALL WERE IN GOOD CONDITION
 JV4214'EXCEPT THE STATION MARK WHICH HAD BEEN DISTURBED SLIGHTLY
 JV4214'BY GRADING OPERATIONS.  THE SURFACE MARK WAS REMOVED AND ANOTHER
 JV4214'PLACED PRECISELY OVER THE UNDERGROUND MARK.  A COMPLETE
 JV4214'DESCRIPTION FOLLOWS--
 JV4214'
 JV4214'THE STATION IS ABOUT 1/2 MI. SW OF DAMASCUS, NEAR THE SW
 JV4214'CORNER OF THE GROUNDS SURROUNDING THE DAMASCUS GRADE SCHOOL, IN
 JV4214'AN ASPHALT-COVERED PARKING AREA AT SW ENTRANCE TO GROUNDS,
 JV4214'ABOUT 132 FT. SW OF THE SW CORNER OF THE 1959 ADDITION (NOW
 JV4214'UNDER CONSTRUCTION) TO THE SCHOOL BUILDING, 65 FT. E OF THE
 JV4214'CUT BANK ABOVE THE ATHLETIC FIELD, AND 42 FT. N OF THE CENTER
 JV4214'LINE OF STATE HIGHWAY 122.
 JV4214'
 JV4214'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 27
 JV4214'AND 108 IN DAMASCUS, GO SW ON STATE HIGHWAY 27 FOR 0.4 MI. TO
 JV4214'STATE HIGHWAY 122, TURN RIGHT (W) AND GO 0.1 MI. ALONG STATE
 JV4214'HIGHWAY 122 TO THE STATION ON THE RIGHT (N).  CONTINUE
 JV4214'ON STATE HIGHWAY 122 W FOR 0.2 MI. TO AZIMUTH MARK ON LEFT (S).
 JV4214'
 JV4214'THE STATION IS A STANDARD DISK, STAMPED DAMASCUS 2 1953 AND
 JV4214'SET IN THE TOP OF A SQUARE CONCRETE POST FLUSH WITH THE
 JV4214'ASPHALT PAVING SURFACE.
 JV4214'
 JV4214'THE UNDERGROUND MARK IS A STANDARD DISK, STAMPED DAMASCUS
 JV4214'2, 1953 AND SET IN CONCRETE ABOUT 2-1/2 FT. BELOW THE PAVING
 JV4214'SURFACE.
 JV4214'
 JV4214'REFERENCE MARK 2 IS 48 FT. W OF TELEPHONE POLE 18, 19 FT. N
 JV4214'OF THE CENTER LINE OF STATE HIGHWAY 122, AND ABOUT 2 FT. N OF
 JV4214'THE TOP OF AN 8-FT. BANK.  IT IS A STANDARD DISK, STAMPED
 JV4214'DAMASCUS NO 2 1953 AND SET IN THE TOP OF A SQUARE CONCRETE POST
 JV4214'PROJECTING ABOUT 6 INCHES ABOVE THE GROUND.
 JV4214'
 JV4214'REFERENCE MARK 3 IS 65 FT. N OF THE CENTER LINE OF STATE HIGHWAY
 JV4214'122.  IT IS A STANDARD DISK, STAMPED DAMASCUS 2 NO 3 1953 AND
 JV4214'SET IN THE NW CORNER OF THE TOP CONCRETE LANDING OF THE S SET
 JV4214'OF STEPS LEADING DOWN TO THE ATHLETIC FIELD.
 JV4214'
 JV4214'THE AZIMUTH MARK IS 14 FT. S OF THE CENTER LINE OF STATE
 JV4214'HIGHWAY 122, 5 FT. NW OF A POWER LINE POLE, AND 1 FT. W OF THE
 JV4214'E END OF THE HEADWALL.  IT IS A STANDARD DISK, STAMPED DAMASCUS
 JV4214'1953 AND SET IN THE S CONCRETE HEADWALL OF A CULVERT.
 JV4214
 JV4214                          STATION RECOVERY (1969)
 JV4214
 JV4214'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4214'THE STATION MARK, REFERENCE MARKS 2, 3 AND THE AZIMUTH MARK
 JV4214'WERE RECOVERED AS DESCRIBED IN 1953.  DAMASCUS 2 1953 RM 4 WAS
 JV4214'ESTABLISHED BECAUSE DAMASCUS 2 1953 IS IN A PAVED PARKING AREA
 JV4214'AND A TOWER COULD NOT BE ERECTED OVER THE STATION.  A TRAVERSE
 JV4214'CONNECTION WAS MADE TO DAMASCUS 2 1953 RM 4, THE DISTANCE BEING
 JV4214'13.869 METERS OR (45.50 FEET) EAST-SOUTHEAST.
 JV4214'
 JV4214'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4214'1/2 MILE SOUTHWEST OF DAMASCUS.
 JV4214
 JV4214                          STATION RECOVERY (1995)
 JV4214
 JV4214'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4214'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4222 ***********************************************************************
 JV4222  DESIGNATION -  DAMASCUS 2 RM 4
 JV4222  PID         -  JV4222
 JV4222  STATE/COUNTY-  MD/MONTGOMERY
 JV4222  COUNTRY     -  US
 JV4222  USGS QUAD   -  DAMASCUS (2016)
 JV4222
 JV4222                         *CURRENT SURVEY CONTROL
 JV4222  ______________________________________________________________________
 JV4222* NAD 83(1993) POSITION- 39 17 06.31599(N) 077 12 42.60108(W)   ADJUSTED
 JV4222* NAVD 88 ORTHO HEIGHT -   253.6   (meters)      832.    (feet) VERTCON3
 JV4222  ______________________________________________________________________
 JV4222  GEOID HEIGHT    -        -31.868 (meters)                     GEOID18
 JV4222  LAPLACE CORR    -          3.10  (seconds)                    DEFLEC18
 JV4222  HORZ ORDER      -  FIRST
 JV4222
 JV4222.The horizontal coordinates were established by classical geodetic methods
 JV4222.and adjusted by the National Geodetic Survey in November 1994.
 JV4222
 JV4222.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4222.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4222
 JV4222.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4222.GEOID18 height accuracy estimate available here.
 JV4222
 JV4222.Click photographs - Photos may exist for this station.
 JV4222
 JV4222.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4222
 JV4222. The following values were computed from the NAD 83(1993) position.
 JV4222
 JV4222;                    North         East     Units Scale Factor Converg.
 JV4222;SPC MD       -   179,676.133   381,723.948   MT  0.99997531   -0 07 58.6
 JV4222;SPC MD       -   589,487.45  1,252,372.65   sFT  0.99997531   -0 07 58.6
 JV4222;UTM  18      - 4,350,745.944   309,234.911   MT  1.00004809   -1 24 03.3
 JV4222
 JV4222!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4222!SPC MD       -   0.99996521  x   0.99997531  =   0.99994052
 JV4222!UTM  18      -   0.99996521  x   1.00004809  =   1.00001330
 JV4222
 JV4222:                Primary Azimuth Mark                     Grid Az
 JV4222:SPC MD       -  DAMASCUS 2 AZ MK                         279 10 20.6
 JV4222:UTM  18      -  DAMASCUS 2 AZ MK                         280 26 25.3
 JV4222
 JV4222_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0923450745(NAD 83)
 JV4222
 JV4222|---------------------------------------------------------------------|
 JV4222| PID    Reference Object                     Distance      Geod. Az  |
 JV4222|                                                           dddmmss.s |
 JV4222| JV4223 DAMASCUS MUN TANK                   436.160 METERS 0690314.3 |
 JV4222| JV4225 DAMASCUS COUNTY HWY DEPT MAST       447.849 METERS 0711231.3 |
 JV4222| JV4227 DAMASCUS METH CH SPIRE              APPROX. 1.0 KM 0850841.5 |
 JV4222| JV4238 DAMASCUS RM 2                        17.990 METERS 26331     |
 JV4222| CJ9614 DAMASCUS 2 AZ MK                                   2790222.0 |
 JV4222| CJ9615 DAMASCUS 2 RM 3                      34.040 METERS 29542     |
 JV4222|---------------------------------------------------------------------|
 JV4222
 JV4222                          SUPERSEDED SURVEY CONTROL
 JV4222
 JV4222  NAD 83(1991)-  39 17 06.31543(N)    077 12 42.60141(W) AD(       ) 1
 JV4222  NAD 83(1986)-  39 17 06.31562(N)    077 12 42.61175(W) AD(       ) 1
 JV4222  NAD 27      -  39 17 05.93738(N)    077 12 43.67115(W) AD(       ) 1
 JV4222  NGVD 29 (07/19/86)  253.8    (m)          833.     (f) VERT ANG       
 JV4222
 JV4222.Superseded values are not recommended for survey control.
 JV4222
 JV4222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4222.See file dsdata.pdf to determine how the superseded data were derived.
 JV4222
 JV4222_MARKER: DR = REFERENCE MARK DISK
 JV4222_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4222_STAMPING: DAMASCUS 2 1953 NO 4 1969
 JV4222_MARK LOGO: CGS
 JV4222_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4222+STABILITY: SURFACE MOTION
 JV4222
 JV4222  HISTORY     - Date     Condition        Report By
 JV4222  HISTORY     - 1969     MONUMENTED       CGS
 JV4222  HISTORY     - 19950621 GOOD             USPSQD
 JV4222
 JV4222                          STATION DESCRIPTION
 JV4222
 JV4222'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4222'THE STATION IS ABOUT 1/2 MILE SOUTHWEST OF DAMASCUS, ON THE
 JV4222'GROUNDS OF THE DAMASCUS ELEMENTARY SCHOOL.
 JV4222'
 JV4222'TO REACH THE STATION FROM THE POST OFFICE IN DAMASCUS, GO
 JV4222'SOUTHWEST ON STATE HIGHWAY 27 FOR 0.35 MILE TO THE JUNCTION WITH
 JV4222'STATE HIGHWAY 122.  TURN RIGHT AND GO WEST ON HIGHWAY 122 FOR 0.35
 JV4222'MILE TO THE STATION ON THE RIGHT.  TO REACH THE AZIMUTH MARK,
 JV4222'CONTINUE WEST ON HIGHWAY 122 FOR 0.2 MILE TO THE MARK ON THE
 JV4222'LEFT.
 JV4222'
 JV4222'STATION MARK IS A STANDARD REFERENCE MARK DISK, STAMPED DAMASCUS
 JV4222'2 1953 NO 4 1969, SET IN THE TOP OF A ROUND CONCRETE POST, 12
 JV4222'INCHES IN DIAMETER, THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS
 JV4222'101.8 FEET SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF THE SCHOOL
 JV4222'BUILDING, 38.0 FEET NORTH OF THE CENTERLINE OF STATE HIGHWAY 122,
 JV4222'18.0 FEET NORTHEAST OF A POWER LINE POLE AND 14.4 FEET NORTH OF
 JV4222'A FENCE.  THE UNDERGROUND MARK IS 40 INCHES BELOW THE GROUND
 JV4222'SURFACE.
 JV4222'
 JV4222'DAMASCUS 2 1953 IS A STANDARD DISK, STAMPED DAMASCUS 2 1953,
 JV4222'SET IN THE TOP OF A 10 INCH SQUARE CONCRETE POST, THAT IS FLUSH
 JV4222'WITH THE SURFACE OF THE GROUND.  IT IS 44.6 FEET NORTHWEST OF
 JV4222'THE POWER LINE POLE, 42.0 FEET NORTH OF THE CENTERLINE OF
 JV4222'HIGHWAY 122 AND 36.0 FEET NORTHEAST OF THE CENTERLINE OF THE EXIT
 JV4222'DRIVEWAY OF A PARKING LOT.
 JV4222'
 JV4222'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED DAMASCUS NO 2 1943,
 JV4222'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 12
 JV4222'INCHES ABOVE THE GROUND.  IT IS 49.3 FEET WEST OF THE POWER LINE
 JV4222'POLE, 20.0 FEET EAST OF THE CENTERLINE OF THE EXIT DRIVEWAY FOR
 JV4222'THE PARKING LOT, 20.0 FEET NORTH OF THE CENTERLINE OF HIGHWAY 122
 JV4222'AND ABOUT THE SAME ELEVATION AS THE STATION.
 JV4222'
 JV4222'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED DAMASCUS 2 NO 3 1953,
 JV4222'CEMENTED IN A DRILL HOLE IN THE NORTHWEST CORNER OF SOUTH ONE OF TWO
 JV4222'CONCRETE LANDINGS OF STEPS LEADING TO A BALL FIELD.  IT IS 64.0
 JV4222'FEET NORTH OF THE CENTERLINE OF HIGHWAY 122, 15.0 FEET WEST OF
 JV4222'THE WEST CURB OF THE PARKING LOT AND ABOUT THE SAME ELEVATION AS
 JV4222'THE STATION.
 JV4222'
 JV4222'AZIMUTH MARK IS A STANDARD DISK, STAMPED DAMASCUS 1943, CEMENTED IN
 JV4222'A DRILL HOLE IN EAST END OF THE SOUTH ABUTMENT OF A CONCRETE
 JV4222'CULVERT.  IT IS 14.0 FEET SOUTH OF THE CENTERLINE OF HIGHWAY 122,
 JV4222'3.7 FEET NORTH OF POWER LINE POLE NUMBER F 18655 AND 1.6 FEET
 JV4222'NORTH OF A WITNESS POST.
 JV4222'
 JV4222'DEMASCUS 2 1953 RM 4 WAS ESTABLISHED BECAUSE DAMASCUS 2 1953
 JV4222'WAS IN A PAVED PARKING AREA AND A TOWER COULD NOT BE ERECTED
 JV4222'OVER THE STATION.
 JV4222
 JV4222                          STATION RECOVERY (1995)
 JV4222
 JV4222'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4222'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4225 ***********************************************************************
 JV4225  DESIGNATION -  DAMASCUS COUNTY HWY DEPT MAST
 JV4225  PID         -  JV4225
 JV4225  STATE/COUNTY-  MD/MONTGOMERY
 JV4225  COUNTRY     -  US
 JV4225  USGS QUAD   -  DAMASCUS (2016)
 JV4225
 JV4225                         *CURRENT SURVEY CONTROL
 JV4225  ______________________________________________________________________
 JV4225* NAD 83(1993) POSITION- 39 17 10.99350(N) 077 12 24.90998(W)   ADJUSTED
 JV4225  ______________________________________________________________________
 JV4225  GEOID HEIGHT    -        -31.863 (meters)                     GEOID18
 JV4225  LAPLACE CORR    -          2.91  (seconds)                    DEFLEC18
 JV4225  HORZ ORDER      -  THIRD
 JV4225
 JV4225.The horizontal coordinates were established by classical geodetic methods
 JV4225.and adjusted by the National Geodetic Survey in November 1994.
 JV4225
 JV4225.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4225.GEOID18 height accuracy estimate available here.
 JV4225
 JV4225.Click photographs - Photos may exist for this station.
 JV4225
 JV4225.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4225
 JV4225. The following values were computed from the NAD 83(1993) position.
 JV4225
 JV4225;                    North         East     Units Scale Factor Converg.
 JV4225;SPC MD       -   179,819.407   382,148.249   MT  0.99997547   -0 07 47.5
 JV4225;SPC MD       -   589,957.50  1,253,764.71   sFT  0.99997547   -0 07 47.5
 JV4225;UTM  18      - 4,350,879.804   309,662.309   MT  1.00004609   -1 23 52.2
 JV4225
 JV4225_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0966250879(NAD 83)
 JV4225
 JV4225                          SUPERSEDED SURVEY CONTROL
 JV4225
 JV4225  NAD 83(1991)-  39 17 10.99291(N)    077 12 24.91042(W) AD(       ) 3
 JV4225  NAD 83(1986)-  39 17 10.99320(N)    077 12 24.92095(W) AD(       ) 3
 JV4225  NAD 27      -  39 17 10.61517(N)    077 12 25.98104(W) AD(       ) 3
 JV4225
 JV4225.Superseded values are not recommended for survey control.
 JV4225
 JV4225.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4225.See file dsdata.pdf to determine how the superseded data were derived.
 JV4225
 JV4225_MARKER: 42 = RADIO/TV MAST
 JV4225_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4225+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4225
 JV4225  HISTORY     - Date     Condition        Report By
 JV4225  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4225  HISTORY     - 19950621 GOOD             USPSQD
 JV4225  HISTORY     - 20031102 GOOD             USPSQD
 JV4225  HISTORY     - 20050303 GOOD             USPSQD
 JV4225
 JV4225                          STATION DESCRIPTION
 JV4225
 JV4225'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4225'THE STATION IS THE RED LIGHT ON TOP OF THE DAMASCUS COUNTY
 JV4225'HIGHWAY DEPARTMENT MAST KGA 241.  IT IS ABOUT 200 FEET ABOVE
 JV4225'THE GROUND.
 JV4225'
 JV4225'THE STATION IS LOCATED 0.2 MILE SOUTHWEST OF THE JUNCTION OF
 JV4225'STATE HIGHWAY 27 AND STATE HIGHWAY 108.
 JV4225
 JV4225                          STATION RECOVERY (1995)
 JV4225
 JV4225'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4225'RECOVERED IN GOOD CONDITION.
 JV4225
 JV4225                          STATION RECOVERY (2003)
 JV4225
 JV4225'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4225'RECOVERED IN GOOD CONDITION.
 JV4225
 JV4225                          STATION RECOVERY (2005)
 JV4225
 JV4225'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4225'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4219 ***********************************************************************
 JV4219  DESIGNATION -  DAMASCUS DELTA SITE MICROWAVE
 JV4219  PID         -  JV4219
 JV4219  STATE/COUNTY-  MD/HOWARD
 JV4219  COUNTRY     -  US
 JV4219  USGS QUAD   -  DAMASCUS (2016)
 JV4219
 JV4219                         *CURRENT SURVEY CONTROL
 JV4219  ______________________________________________________________________
 JV4219* NAD 83(1993) POSITION- 39 20 48.95462(N) 077 10 16.79080(W)   ADJUSTED
 JV4219  ______________________________________________________________________
 JV4219  GEOID HEIGHT    -        -31.909 (meters)                     GEOID18
 JV4219  LAPLACE CORR    -          2.72  (seconds)                    DEFLEC18
 JV4219  HORZ ORDER      -  THIRD
 JV4219
 JV4219.The horizontal coordinates were established by classical geodetic methods
 JV4219.and adjusted by the National Geodetic Survey in November 1994.
 JV4219
 JV4219.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4219.GEOID18 height accuracy estimate available here.
 JV4219
 JV4219.Click photographs - Photos may exist for this station.
 JV4219
 JV4219.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4219
 JV4219. The following values were computed from the NAD 83(1993) position.
 JV4219
 JV4219;                    North         East     Units Scale Factor Converg.
 JV4219;SPC MD       -   186,534.667   385,231.234   MT  0.99998359   -0 06 27.1
 JV4219;SPC MD       -   611,989.15  1,263,879.47   sFT  0.99998359   -0 06 27.1
 JV4219;UTM  18      - 4,357,525.547   312,893.418   MT  1.00003106   -1 22 37.4
 JV4219
 JV4219_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1289357525(NAD 83)
 JV4219
 JV4219                          SUPERSEDED SURVEY CONTROL
 JV4219
 JV4219  NAD 83(1991)-  39 20 48.95291(N)    077 10 16.79303(W) AD(       ) 3
 JV4219  NAD 83(1986)-  39 20 48.95346(N)    077 10 16.80329(W) AD(       ) 3
 JV4219  NAD 27      -  39 20 48.57990(N)    077 10 17.86515(W) AD(       ) 3
 JV4219
 JV4219.Superseded values are not recommended for survey control.
 JV4219
 JV4219.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4219.See file dsdata.pdf to determine how the superseded data were derived.
 JV4219
 JV4219_MARKER: 45 = MICROWAVE TOWER
 JV4219
 JV4219  HISTORY     - Date     Condition        Report By
 JV4219  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4219  HISTORY     - 19920819 GOOD             USPSQD
 JV4219
 JV4219                          STATION DESCRIPTION
 JV4219
 JV4219'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4219'THE STATION IS THE RED LIGHT ON TOP OF THE DAMASCUS DELTA SITE
 JV4219'MICROWAVE, LOCATED 1.2 MILES NORTH OF THE MONTGOMERY COUNTY LINE
 JV4219'AND 0.2 MILE EAST OF THE INTERSECTION OF STATE HIGHWAY 27 AND PENN
 JV4219'SHOP ROAD.  IT IS ABOUT 300 FEET ABOVE THE GROUND.
 JV4219'
 JV4219'THE STATION SITE IS OPERATED BY THE U.S. ARMY.
 JV4219
 JV4219                          STATION RECOVERY (1992)
 JV4219
 JV4219'RECOVERY NOTE BY US POWER SQUADRON 1992 (DTH)
 JV4219'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4227 ***********************************************************************
 JV4227  DESIGNATION -  DAMASCUS METH CH SPIRE
 JV4227  PID         -  JV4227
 JV4227  STATE/COUNTY-  MD/MONTGOMERY
 JV4227  COUNTRY     -  US
 JV4227  USGS QUAD   -  DAMASCUS (2016)
 JV4227
 JV4227                         *CURRENT SURVEY CONTROL
 JV4227  ______________________________________________________________________
 JV4227* NAD 83(1993) POSITION- 39 17 08.99002(N) 077 12 02.06193(W)   ADJUSTED
 JV4227  ______________________________________________________________________
 JV4227  GEOID HEIGHT    -        -31.853 (meters)                     GEOID18
 JV4227  LAPLACE CORR    -          2.54  (seconds)                    DEFLEC18
 JV4227  HORZ ORDER      -  THIRD
 JV4227
 JV4227.The horizontal coordinates were established by classical geodetic methods
 JV4227.and adjusted by the National Geodetic Survey in November 1994.
 JV4227
 JV4227.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4227.GEOID18 height accuracy estimate available here.
 JV4227
 JV4227.Click photographs - Photos may exist for this station.
 JV4227
 JV4227.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4227
 JV4227. The following values were computed from the NAD 83(1993) position.
 JV4227
 JV4227;                    North         East     Units Scale Factor Converg.
 JV4227;SPC MD       -   179,756.401   382,695.665   MT  0.99997540   -0 07 33.2
 JV4227;SPC MD       -   589,750.79  1,255,560.69   sFT  0.99997540   -0 07 33.2
 JV4227;UTM  18      - 4,350,804.695   310,208.235   MT  1.00004353   -1 23 37.7
 JV4227
 JV4227_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1020850804(NAD 83)
 JV4227
 JV4227                          SUPERSEDED SURVEY CONTROL
 JV4227
 JV4227  NAD 83(1991)-  39 17 08.98953(N)    077 12 02.06249(W) AD(       ) 3
 JV4227  NAD 83(1986)-  39 17 08.98977(N)    077 12 02.07298(W) AD(       ) 3
 JV4227  NAD 27      -  39 17 08.61244(N)    077 12 03.13371(W) AD(       ) 3
 JV4227
 JV4227.Superseded values are not recommended for survey control.
 JV4227
 JV4227.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4227.See file dsdata.pdf to determine how the superseded data were derived.
 JV4227
 JV4227_MARKER: 90 = CHURCH SPIRE
 JV4227_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4227+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4227
 JV4227  HISTORY     - Date     Condition        Report By
 JV4227  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4227  HISTORY     - 19950621 GOOD             USPSQD
 JV4227  HISTORY     - 20031102 GOOD             USPSQD
 JV4227  HISTORY     - 20050303 GOOD             USPSQD
 JV4227
 JV4227                          STATION DESCRIPTION
 JV4227
 JV4227'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4227'STATION IS THE UNITED METHODIST CHURCH SPIRE.  THE POINT OBSERVED
 JV4227'WAS THE CENTER OF THE TOP OF THE SILVER CROSS ON THE DARK GREY
 JV4227'SPIRE.  IT IS ABOUT 115 FEET ABOVE THE GROUND.
 JV4227'
 JV4227'IT IS LOCATED 0.1 MILE SOUTH OF THE JUNCTION OF STATE ROUTE 124
 JV4227'AND STATE HIGHWAY 27 IN DAMASCUS.
 JV4227
 JV4227                          STATION RECOVERY (1995)
 JV4227
 JV4227'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4227'RECOVERED IN GOOD CONDITION.
 JV4227
 JV4227                          STATION RECOVERY (2003)
 JV4227
 JV4227'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4227'RECOVERED IN GOOD CONDITION.
 JV4227
 JV4227                          STATION RECOVERY (2005)
 JV4227
 JV4227'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4227'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1898 ***********************************************************************
 HU1898  DESIGNATION -  DAME
 HU1898  PID         -  HU1898
 HU1898  STATE/COUNTY-  MD/SOMERSET
 HU1898  COUNTRY     -  US
 HU1898  USGS QUAD   -  DEAL ISLAND (2016)
 HU1898
 HU1898                         *CURRENT SURVEY CONTROL
 HU1898  ______________________________________________________________________
 HU1898* NAD 83(1991) POSITION- 38 12 02.33839(N) 075 53 38.79906(W)   ADJUSTED
 HU1898* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1898  ______________________________________________________________________
 HU1898  GEOID HEIGHT    -        -35.813 (meters)                     GEOID18
 HU1898  LAPLACE CORR    -         -2.31  (seconds)                    DEFLEC18
 HU1898  HORZ ORDER      -  SECOND
 HU1898
 HU1898.The horizontal coordinates were established by classical geodetic methods
 HU1898.and adjusted by the National Geodetic Survey in January 1992.
 HU1898
 HU1898.The orthometric height was scaled from a topographic map.
 HU1898
 HU1898.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1898.GEOID18 height accuracy estimate available here.
 HU1898
 HU1898.Click photographs - Photos may exist for this station.
 HU1898
 HU1898.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1898
 HU1898. The following values were computed from the NAD 83(1991) position.
 HU1898
 HU1898;                    North         East     Units Scale Factor Converg.
 HU1898;SPC MD       -    59,861.476   496,867.163   MT  1.00001877   +0 41 38.7
 HU1898;SPC MD       -   196,395.53  1,630,138.35   sFT  1.00001877   +0 41 38.7
 HU1898;UTM  18      - 4,228,455.657   421,713.071   MT  0.99967548   -0 33 10.7
 HU1898
 HU1898!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1898!SPC MD       -   1.00000550  x   1.00001877  =   1.00002427
 HU1898!UTM  18      -   1.00000550  x   0.99967548  =   0.99968098
 HU1898
 HU1898:                Primary Azimuth Mark                     Grid Az
 HU1898:SPC MD       -  HEAD 2                                   280 32 32.2
 HU1898:UTM  18      -  HEAD 2                                   281 47 21.6
 HU1898
 HU1898_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2171328455(NAD 83)
 HU1898
 HU1898|---------------------------------------------------------------------|
 HU1898| PID    Reference Object                     Distance      Geod. Az  |
 HU1898|                                                           dddmmss.s |
 HU1898| HU1850 WINGATE POINT BEACON                APPROX. 4.2 KM 0303025.7 |
 HU1898| HU1904 WICOMICO RIVER BUOY 8               APPROX. 2.2 KM 0451354.4 |
 HU1898| DC7201 DAME RM 1                                          22328     |
 HU1898| HV6451 HEAD 2                              APPROX.12.3 KM 2811410.9 |
 HU1898| HU1911 WICOMICO R LIGHTED BELL BUOY 1      APPROX. 3.1 KM 2861814.1 |
 HU1898| HU1889 CLAY ISLAND SHOAL BEACON            APPROX. 4.9 KM 2950209.7 |
 HU1898|---------------------------------------------------------------------|
 HU1898
 HU1898                          SUPERSEDED SURVEY CONTROL
 HU1898
 HU1898  NAD 83(1986)-  38 12 02.33789(N)    075 53 38.82083(W) AD(       ) 2
 HU1898  NAD 27      -  38 12 01.88800(N)    075 53 40.05500(W) AD(       ) 2
 HU1898
 HU1898.Superseded values are not recommended for survey control.
 HU1898
 HU1898.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1898.See file dsdata.pdf to determine how the superseded data were derived.
 HU1898
 HU1898_MARKER: DS = TRIANGULATION STATION DISK
 HU1898_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1898_STAMPING: DAME 1932
 HU1898_MARK LOGO: CGS
 HU1898_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1898+STABILITY: SURFACE MOTION
 HU1898
 HU1898  HISTORY     - Date     Condition        Report By
 HU1898  HISTORY     - 1932     MONUMENTED       CGS
 HU1898  HISTORY     - 1942     GOOD             CGS
 HU1898  HISTORY     - 1961     GOOD             CGS
 HU1898  HISTORY     - 1973     GOOD             MDDNR
 HU1898
 HU1898                          STATION DESCRIPTION
 HU1898
 HU1898'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1898'STATION IS ABOUT 4/10 MILE WESTWARD OF ENTRANCE TO DAMES QUARTER
 HU1898'CREEK, ON THE S SHORE AT THE ENTRANCE TO THE WICOMICO RIVER, AT
 HU1898'A SMALL RIVER RESORT KNOWN AS TANGIER BEACH.  THE CENTER MARK IS
 HU1898'152.4 FEET FROM THE NEAREST CORNER OF A REFRESHMENT STAND.  105.6
 HU1898'FEET E OF THE CENTER LINE OF A ROAD THAT LEADS TO THE BEACH, AND
 HU1898'207 FEET INSIDE OF THE HIGH-WATER LINE.  A GROVE OF VERY TALL
 HU1898'PINES STAND IMMEDIATELY TO THE N OF THE ROAD MENTIONED ABOVE.
 HU1898'
 HU1898'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1898'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HU1898'
 HU1898'HEIGHT OF SIGNAL ABOVE STATION MARK - 21 METERS.
 HU1898
 HU1898                          STATION RECOVERY (1942)
 HU1898
 HU1898'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1898'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HU1898'ORIGINAL DESCRIPTION--
 HU1898'
 HU1898'(1) REFRESHMENT STAND GONE.
 HU1898'
 HU1898'(2) 101.7 FEET E OF CENTER LINE OF ROAD, NOT 105.6 FEET.
 HU1898'
 HU1898'(3) 163 FEET INSIDE HIGH-WATER LINE, NOT 207 FEET.
 HU1898'
 HU1898'(4) A GROVE OF PINES TO THE W OF THE ROAD, NOT TO THE N OF THE
 HU1898'ROAD.
 HU1898'
 HU1898'THE STATION IS LOCATED ON THE S SHORE OF MONIE BAY OPPOSITE THE
 HU1898'MOUTH OF THE WICOMICO RIVER AT TANGIER BEACH JUST W OF LONG POINT,
 HU1898'ABOUT 0.4 MILE W OF DAMES QUARTER CREEK, 1.0 MILE N FROM DAMES
 HU1898'QUARTER POST OFFICE, 101.7 FEET E OF THE CENTER LINE OF A ROAD
 HU1898'THAT LEADS TO THE BEACH, AND 163 FEET INSIDE THE HIGH-WATER
 HU1898'LINE.  THE STATION IS IN A LOT COVERED WITH BRUSH, 160 FEET FROM
 HU1898'THE SW CORNER OF THE LOT, AND CENTER LINE OF THE ROAD, AND 121 FEET
 HU1898'FROM THE SE CORNER OF THE LOT.  THE STATION IS A BRONZE DISK,
 HU1898'STAMPED DAME 1932, SET IN THE TOP OF A 12-INCH SQUARE
 HU1898'CONCRETE MONUMENT, WHICH IS FLUSH WITH THE GROUND.  THE
 HU1898'STATION IS IN GOOD CONDITION.
 HU1898'
 HU1898'REFERENCE MARK NO.1 IS LOCATED 71.834 FEET SW FROM THE STATION,
 HU1898'AND IN THE SAME LOT AS THE STATION, 30.5 FEET E OF THE CENTER LINE
 HU1898'OF THE BEACH ROAD, AND DUE E OF A PEAR TREE ON THE W EDGE OF THE
 HU1898'ROAD.  THE MARK IS A BRONZE DISK, WITH THE ARROW POINTING TOWARD
 HU1898'THE STATION, STAMPED DAME 1932 NO.1, SET IN THE TOP OF A 12-INCH
 HU1898'SQUARE CONCRETE MONUMENT, WHICH IS FLUSH WITH THE GROUND.  THE
 HU1898'MARK IS IN GOOD CONDITION.
 HU1898
 HU1898                          STATION RECOVERY (1961)
 HU1898
 HU1898'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HU1898'THE STATION AND REFERENCE MARK WAS RECOVERED IN GOOD CONDITION.  THE
 HU1898'DESCRIPTION IS NO LONGER ADEQUATE, A NEW ONE FOLLOWS--
 HU1898'
 HU1898'THE STATION IS LOCATED ON THE SOUTH SHORE OF THE WICOMICO
 HU1898'RIVER.  ABOUT 0.4 MILE WEST OF THE MOUTH OF THE DAMES QUARTER CREEK,
 HU1898'AT SMALL RIVER RESORT KNOWN AS TANGIER BEACH.  THE STATION IS
 HU1898'LOCATED 40.1 FEET NORTHEAST OF THE NORTHEAST CORNER OF A 1-1/2
 HU1898'STORY SHINGLE HOUSE, 32 FEET EAST OF THE CENTER OF THE CONCRETE
 HU1898'SEPTIC TANK COVER, 64.2 FEET NORTHWEST OF AN 8 INCH TRIANGULAR
 HU1898'BLAZED PINE TREE.  THE MARK IS A STANDARD DISK, STAMPED DAME
 HU1898'1932 SET IN A 10 INCH SQUARE CONCRETE POST FLUSH WITH THE LAWN.
 HU1898'
 HU1898'THE REFERENCE MARK IS LOCATED 55.9 FEET EAST OF A 1-FOOT PEAR
 HU1898'TREE WEST OF THE ROAD, 19 FEET NORTH OF THE CENTER OF THE CONCRETE
 HU1898'STEP OF THE HOUSE, 10.8 FEET WEST OF THE NORTHWEST CORNER OF THE
 HU1898'HOUSE.  MARKED A STANDARD DISK STAMPED DAME NO.1 1932 SET IN THE
 HU1898'CENTER OF A 10-INCH CONCRETE POST FLUSH WITH THE SURFACE OF THE
 HU1898'GROUND.
 HU1898'
 HU1898'TO REACH FROM THE POST OFFICE IN DAME QUARTER GO SOUTHEAST ON
 HU1898'STATE ROUTE 363 FOR 0.1 MILE TO PAVED ROAD LEFT, TURN NORTHEAST
 HU1898'AND GO 0.9 MILE TO GATE AT SHARP TURN IN ROAD, PROCEED THROUGH GATE
 HU1898'AND GO 0.1 MILE TO HOUSE AND STATION.
 HU1898
 HU1898                          STATION RECOVERY (1973)
 HU1898
 HU1898'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HU1898'DAME 1932 GOOD
 HU1898'
 HU1898'DAME NO 1 1932 GOOD
 HU1898'
 HU1898'RECOVERED AS DESCRIBED WITH STATION LEANING SLIGHTLY TOWARD NE
 HU1898'WITNESS POST AND SIGN PLACED 3.4 FT E OF STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6276 ***********************************************************************
 HV6276  DESIGNATION -  DAN
 HV6276  PID         -  HV6276
 HV6276  STATE/COUNTY-  MD/TALBOT
 HV6276  COUNTRY     -  US
 HV6276  USGS QUAD   -  CLAIBORNE (2016)
 HV6276
 HV6276                         *CURRENT SURVEY CONTROL
 HV6276  ______________________________________________________________________
 HV6276* NAD 83(1991) POSITION- 38 46 02.69768(N) 076 17 41.81049(W)   ADJUSTED
 HV6276* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6276  ______________________________________________________________________
 HV6276  GEOID HEIGHT    -        -34.181 (meters)                     GEOID18
 HV6276  LAPLACE CORR    -         -5.27  (seconds)                    DEFLEC18
 HV6276  HORZ ORDER      -  THIRD
 HV6276
 HV6276.The horizontal coordinates were established by classical geodetic methods
 HV6276.and adjusted by the National Geodetic Survey in January 1992.
 HV6276
 HV6276.The orthometric height was scaled from a topographic map.
 HV6276
 HV6276.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6276.GEOID18 height accuracy estimate available here.
 HV6276
 HV6276.Click photographs - Photos may exist for this station.
 HV6276
 HV6276.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6276
 HV6276. The following values were computed from the NAD 83(1991) position.
 HV6276
 HV6276;                    North         East     Units Scale Factor Converg.
 HV6276;SPC MD       -   122,424.192   461,272.052   MT  0.99995163   +0 26 33.1
 HV6276;SPC MD       -   401,653.37  1,513,356.72   sFT  0.99995163   +0 26 33.1
 HV6276;UTM  18      - 4,291,763.126   387,499.970   MT  0.99975585   -0 48 39.3
 HV6276
 HV6276!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6276!SPC MD       -   1.00000524  x   0.99995163  =   0.99995687
 HV6276!UTM  18      -   1.00000524  x   0.99975585  =   0.99976109
 HV6276
 HV6276:                Primary Azimuth Mark                     Grid Az
 HV6276:SPC MD       -  EDMOND                                   200 59 10.5
 HV6276:UTM  18      -  EDMOND                                   202 14 22.9
 HV6276
 HV6276_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8749991763(NAD 83)
 HV6276
 HV6276|---------------------------------------------------------------------|
 HV6276| PID    Reference Object                     Distance      Geod. Az  |
 HV6276|                                                           dddmmss.s |
 HV6276| CX2676 DAN RM                               21.370 METERS 11031     |
 HV6276| HV6283 EDMOND                              APPROX. 1.0 KM 2012543.6 |
 HV6276| HV6240 VINE                                424.377 METERS 3441604.3 |
 HV6276|---------------------------------------------------------------------|
 HV6276
 HV6276                          SUPERSEDED SURVEY CONTROL
 HV6276
 HV6276  NAD 83(1986)-  38 46 02.69414(N)    076 17 41.82464(W) AD(       ) 3
 HV6276  NAD 27      -  38 46 02.25000(N)    076 17 43.03400(W) AD(       ) 3
 HV6276  USSD        -  38 46 02.64000(N)    076 17 42.83400(W) AD(       ) 3
 HV6276
 HV6276.Superseded values are not recommended for survey control.
 HV6276
 HV6276.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6276.See file dsdata.pdf to determine how the superseded data were derived.
 HV6276
 HV6276_MARKER: K = CLAY TILE PIPE
 HV6276_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6276_SP_SET: OBJECT DRIVEN INTO GROUND
 HV6276
 HV6276  HISTORY     - Date     Condition        Report By
 HV6276  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6276  HISTORY     - 1934     MARK NOT FOUND   CGS
 HV6276  HISTORY     - 1939     MARK NOT FOUND   CGS
 HV6276  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6276
 HV6276                          STATION DESCRIPTION
 HV6276
 HV6276'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6276'ON THE EASTERN SHORE OF HARRIS CREEK, ON LITTLE NECK POINT, ABOUT
 HV6276'3/4 MILE ENE OF SMITH POINT, ON A NARROW NECK OF OYSTER SHELLS,
 HV6276'ABOUT 35 YARDS E OF SW CORNER OF MC QUAYS OYSTER HOUSE, 60 YARDS
 HV6276'E OF EXTREME END OF POINT, 25 YARDS W OF BANK AT EDGE OF WOODS,
 HV6276'AND 3 YARDS S OF SHELL PATH TO OYSTER HOUSE.  STATION MARK IS
 HV6276'CENTER OF 2-INCH TILE PIPE PROJECTING 5 INCHES ABOVE SURFACE OF
 HV6276'GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF
 HV6276'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6276'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6276'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6276'COUNTER-SUNK IN TOP OF POST.  IT IS 21.37 METERS (70.1 FEET)
 HV6276'FROM STATION S 69 DEG 28 MIN E.  OTHER DISTANCES
 HV6276'AND BEARINGS ARE AS FOLLOWS--N CHIMNEY OF EDMONDS HOUSE,
 HV6276'5/8 MILE, S 19 DEG 23 MIN W.  N GABLE OF BARN, 2 MILES, S 51 DEG 14
 HV6276'MIN W.  STACK OF CANNERY AT SHERWOOD, 1-1/4 MILES, S 75 DEG 34
 HV6276'MIN W.  CUPOLA ON HOUSE, 1-1/4 MILES, N 84 DEG 11 MIN W.  CHIMNEY
 HV6276'OF SMALL HOUSE, 1-1/4 MILES, N 68 DEG 02 MIN W.  E GABLE OF MC
 HV6276'QUAYS OYSTER HOUSE, 35 YARDS, N 57 DEG 29 MIN W.  CHURCH SPIRE AT
 HV6276'WITTMAN, 2-1/2 MILES, N 2 DEG 20 MIN W.  CHIMNEY OF SMALL
 HV6276'HOUSE, 1-1/2 MILES, N 26 DEG 35 MIN E.  CHIMNEY OF
 HV6276'SMALL HOUSE, 1-1/2 MILES, N 60 DEG 43 MIN E.  NAIL IN BLAZE IN
 HV6276'4-INCH PERSIMMON TREE, 21.84 METERS (71.6 FEET), S 64 DEG 34
 HV6276'MIN E.  NAIL IN BLAZE IN 6-INCH PERSIMMON TREE, 22.99 METERS
 HV6276'(75.4 FEET), S 39 DEG 32 MIN E.
 HV6276
 HV6276                          STATION RECOVERY (1934)
 HV6276
 HV6276'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 HV6276'BELIEVED WASHED AWAY.  CONSIDERABLE AMOUNT OF SHORE LINE WASHED
 HV6276'AWAY AT PLACE WHERE MARKER SHOULD BE.  NO REFERENCE MARK COULD BE
 HV6276'FOUND.  IT IS RECOMMENDED THAT STATION BE RECORDED AS LOST.
 HV6276
 HV6276                          STATION RECOVERY (1939)
 HV6276
 HV6276'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV6276'STATION DAN (TILE PIPE) NOT FOUND, BUT THE CONCRETE REFERENCE MARK
 HV6276'WAS FOUND IN GOOD CONDITION.
 HV6276'
 HV6276'DESCRIPTION--REFERENCE MARK DAN IS ON THE EASTERN SIDE OF
 HV6276'HARRIS CREEK, ON LITTLE NECK POINT, ABOUT 3/4 MILE ENE OF SMITH
 HV6276'POINT, AT THE INSHORE END OF A NARROW NECK OF OYSTER SHELLS.  THE
 HV6276'CONCRETE FLOORING OF A FORMER OYSTER HOUSE REMAINS AT THE END OF
 HV6276'THE OYSTER SHELL FILL.  REFERENCE MARK IS AT THE FOOT OF A
 HV6276'4-FOOT BANK, IN LINE WITH THE PATH ALONG THE NARROW OYSTER SHELL
 HV6276'NECK, 2.80 METERS SW OF BLAZED 7-INCH PERSIMMON TREE, 1.90
 HV6276'METERS NE OF BLAZED 10-INCH PERSIMMON TREE, 12.10 METERS NNE OF
 HV6276'LONE APPLE TREE AT TOP OF BANK.
 HV6276
 HV6276                          STATION RECOVERY (1940)
 HV6276
 HV6276'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6276'STATION MARK SEARCHED FOR BUT NOT FOUND.  MAY BE COVERED UP OR
 HV6276'WASHED OUT AS POINT HAS BEEN SEVERELY WASHED OVER IN RECENT
 HV6276'STORMS.  ALL REFERENCE TREES DESTROYED.
 HV6276'
 HV6276'REFERENCE MARK RECOVERED IN GOOD CONDITION, ON A NARROW NECK OF
 HV6276'LAND WHERE MC QUAYS OYSTER HOUSE ONCE STOOD, ABOUT 4 YARDS W OF
 HV6276'BANK AT LAWN EDGE, ABOUT 58 YARDS SE OF EXTREME POINT AND ABOUT
 HV6276'10 YARDS NE OF SHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1512 ***********************************************************************
 JW1512  FBN         -  This is a Federal Base Network Control Station.
 JW1512  DESIGNATION -  DAN
 JW1512  PID         -  JW1512
 JW1512  STATE/COUNTY-  MD/ALLEGANY
 JW1512  COUNTRY     -  US
 JW1512  USGS QUAD   -  LONACONING (2016)
 JW1512
 JW1512                         *CURRENT SURVEY CONTROL
 JW1512  ______________________________________________________________________
 JW1512* NAD 83(2011) POSITION- 39 34 54.21740(N) 078 53 50.66989(W)   ADJUSTED
 JW1512* NAD 83(2011) ELLIP HT-   849.668 (meters)        (06/27/12)   ADJUSTED
 JW1512* NAD 83(2011) EPOCH   -  2010.00
 JW1512* NAVD 88 ORTHO HEIGHT -   881.892 (meters)     2893.34  (feet) ADJUSTED
 JW1512  ______________________________________________________________________
 JW1512  GEOID HEIGHT    -        -32.286 (meters)                     GEOID18
 JW1512  NAD 83(2011) X  -    948,020.354 (meters)                     COMP
 JW1512  NAD 83(2011) Y  - -4,830,943.434 (meters)                     COMP
 JW1512  NAD 83(2011) Z  -  4,042,842.368 (meters)                     COMP
 JW1512  LAPLACE CORR    -        -10.60  (seconds)                    DEFLEC18
 JW1512  DYNAMIC HEIGHT  -        881.361 (meters)     2891.60  (feet) COMP
 JW1512  MODELED GRAVITY -    979,992.4   (mgal)                       NAVD 88
 JW1512
 JW1512  VERT ORDER      -  SECOND    CLASS II
 JW1512
 JW1512  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1512  Standards:
 JW1512         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1512            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1512  -------------------------------------------------------------------
 JW1512  NETWORK    0.40   1.06           0.16   0.17   0.54     -0.01853300
 JW1512  -------------------------------------------------------------------
 JW1512  Click here for local accuracies and other accuracy information.
 JW1512
 JW1512.The horizontal coordinates were established by GPS observations
 JW1512.and adjusted by the National Geodetic Survey in June 2012.
 JW1512
 JW1512.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1512.been affixed to the stable North American tectonic plate. See 
 JW1512.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1512
 JW1512.The horizontal coordinates are valid at the epoch date displayed above
 JW1512.which is a decimal equivalence of Year/Month/Day.
 JW1512
 JW1512.The orthometric height was determined by differential leveling and
 JW1512.adjusted by the NATIONAL GEODETIC SURVEY
 JW1512.in June 1991.
 JW1512
 JW1512.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1512.GEOID18 height accuracy estimate available here.
 JW1512
 JW1512.Click photographs - Photos may exist for this station.
 JW1512
 JW1512.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1512
 JW1512.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1512
 JW1512.The ellipsoidal height was determined by GPS observations
 JW1512.and is referenced to NAD 83.
 JW1512
 JW1512.The dynamic height is computed by dividing the NAVD 88
 JW1512.geopotential number by the normal gravity value computed on the
 JW1512.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1512.degrees latitude (g = 980.6199 gals.).
 JW1512
 JW1512.The modeled gravity was interpolated from observed gravity values.
 JW1512
 JW1512. The following values were computed from the NAD 83(2011) position.
 JW1512
 JW1512;                    North         East     Units Scale Factor Converg.
 JW1512;SPC MD       -   214,282.937   236,996.272   MT  1.00002570   -1 11 27.2
 JW1512;SPC MD       -   703,026.60    777,545.27   sFT  1.00002570   -1 11 27.2
 JW1512;UTM  17      - 4,383,446.368   680,574.568   MT  1.00000147   +1 20 24.3
 JW1512
 JW1512!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1512!SPC MD       -   0.99986672  x   1.00002570  =   0.99989241
 JW1512!UTM  17      -   0.99986672  x   1.00000147  =   0.99986819
 JW1512
 JW1512:                Primary Azimuth Mark                     Grid Az
 JW1512:SPC MD       -  DAN AZ MK                                256 14 05.7
 JW1512:UTM  17      -  DAN AZ MK                                253 42 14.2
 JW1512
 JW1512_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8057483446(NAD 83)
 JW1512
 JW1512|---------------------------------------------------------------------|
 JW1512| PID    Reference Object                     Distance      Geod. Az  |
 JW1512|                                                           dddmmss.s |
 JW1512| JW1563 DAN RM 1                             12.112 METERS 03307     |
 JW1512| JW1494 CUMBERLAND ALLEGANY CO CTHSE        APPROX.13.6 KM 0553529.5 |
 JW1512| JW1481 CUMBERLAND MUNICIPAL TANK           APPROX.14.9 KM 0601621.4 |
 JW1512| JW1513 DANS ROCK LOOKOUT TOWER              30.866 METERS 24045     |
 JW1512| JW1511 DANS ROCK LOOKOUT TOWER               2.950 METERS 25331     |
 JW1512| CJ9616 DAN AZ MK                                          2550238.5 |
 JW1512| JW1564 DAN RM 3                              9.207 METERS 26734     |
 JW1512| CJ9617 DAN RM 2                              5.005 METERS 26734     |
 JW1512|---------------------------------------------------------------------|
 JW1512
 JW1512                          SUPERSEDED SURVEY CONTROL
 JW1512
 JW1512  NAD 83(2007)-  39 34 54.21755(N)    078 53 50.67071(W) AD(2002.00) 0
 JW1512  ELLIP H (02/10/07)  849.686  (m)                       GP(2002.00)    
 JW1512  ELLIP H (02/12/02)  849.689  (m)                       GP(       ) 4 1
 JW1512  ELLIP H (12/04/95)  849.631  (m)                       GP(       ) 4 1
 JW1512  ELLIP H (12/01/95)  849.631  (m)                       GP(       ) 2 2
 JW1512  ELLIP H (07/31/92)  849.631  (m)                       GP(       ) 1 1
 JW1512  NAD 83(1991)-  39 34 54.21770(N)    078 53 50.67060(W) AD(       ) A
 JW1512  ELLIP H (10/23/91)  849.631  (m)                       GP(       ) 4 1
 JW1512  NAD 83(1986)-  39 34 54.22209(N)    078 53 50.67944(W) AD(       ) 1
 JW1512  NAD 27      -  39 34 53.90500(N)    078 53 51.60700(W) AD(       ) 1
 JW1512  NAVD 88             881.89   (m)         2893.3    (f) LEVELING    3  
 JW1512  NGVD 29             882.11   (m)         2894.1    (f) LEVELING    3  
 JW1512  NGVD 29 (07/19/86)  882.4    (m)         2895.     (f) VERT ANG       
 JW1512
 JW1512.Superseded values are not recommended for survey control.
 JW1512
 JW1512.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1512.See file dsdata.pdf to determine how the superseded data were derived.
 JW1512
 JW1512_MARKER: DS = TRIANGULATION STATION DISK
 JW1512_SETTING: 66 = SET IN ROCK OUTCROP
 JW1512_STAMPING: DAN 1927
 JW1512_MARK LOGO: CGS
 JW1512_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1512_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1512+STABILITY: POSITION/ELEVATION WELL
 JW1512_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1512+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2019
 JW1512
 JW1512  HISTORY     - Date     Condition        Report By
 JW1512  HISTORY     - 1927     MONUMENTED       CGS
 JW1512  HISTORY     - 1927     GOOD             CGS
 JW1512  HISTORY     - 1939     GOOD             CGS
 JW1512  HISTORY     - 1941     GOOD             CGS
 JW1512  HISTORY     - 1955     GOOD             CGS
 JW1512  HISTORY     - 1973     GOOD             NGS
 JW1512  HISTORY     - 1975     GOOD             NGS
 JW1512  HISTORY     - 1987     GOOD             NGS
 JW1512  HISTORY     - 19901009 GOOD             NGS
 JW1512  HISTORY     - 19901124 GOOD             NGS
 JW1512  HISTORY     - 19920903 GOOD             NGS
 JW1512  HISTORY     - 19950607 GOOD             NGS
 JW1512  HISTORY     - 19950718 GOOD             NGS
 JW1512  HISTORY     - 19980402 GOOD             NEILAN
 JW1512  HISTORY     - 19990901 GOOD             HGSERV
 JW1512  HISTORY     - 20000410 GOOD             MDSHA
 JW1512  HISTORY     - 20190315 GOOD             DEWDAV
 JW1512
 JW1512                          STATION DESCRIPTION
 JW1512
 JW1512'DESCRIBED BY COAST AND GEODETIC SURVEY 1927 (WM)
 JW1512'STATION IS ABOUT 9 MILES SW OF CUMBERLAND AND 4 MILES E OF
 JW1512'MIDLAND, ON A WELL KNOWN PEAK KNOWN AS DANS ROCK.
 JW1512'
 JW1512'ALL MARKS ARE STANDARD DISKS SET IN SOLID ROCK.
 JW1512'
 JW1512'STATION IS NEAR THE HIGHEST POINT OF THE ROUGH ROCKS.  IT IS
 JW1512'NEAR THE G.S. STATION, THE MARK OF WHICH HAS BEEN DESTROYED.
 JW1512'
 JW1512'TO REACH THE STATION FROM CUMBERLAND VIA FROSTBURG TO MIDLAND,
 JW1512'THENCE BY VALE SUMMIT (POMPEY) ROAD ABOUT 1 MILE TO ROAD LEADING
 JW1512'E UP MOUNTAIN TO STATION.  THIS IS A GOOD ROAD LEADING TO FOOT OF
 JW1512'ROCK ABOUT 20 YARDS FROM STATION.
 JW1512
 JW1512                          STATION RECOVERY (1927)
 JW1512
 JW1512'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1927
 JW1512'RECOVERED IN GOOD CONDITION.
 JW1512
 JW1512                          STATION RECOVERY (1939)
 JW1512
 JW1512'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (FML)
 JW1512'STATION AND REFERENCE MARKS RECOVERED AS DESCRIBED AND IN
 JW1512'EXCELLENT CONDITION.  A FIRE TOWER HAS BEEN ERECTED 9 FEET SW
 JW1512'OF STATION.
 JW1512
 JW1512                          STATION RECOVERY (1941)
 JW1512
 JW1512'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (GWL)
 JW1512'THE ORIGINAL DESCRIPTION IS INADEQUATE NOW DUE TO ROAD RELOCATIONS.
 JW1512'
 JW1512'THE STATION IS ABOUT 4 MILES E OF THE VILLAGE OF MIDLAND ON TOP
 JW1512'OF THE WELL-KNOWN PEAK (DANS ROCK).  IT IS ABOUT 40 FEET SSW OF
 JW1512'THE HIGHEST POINT OF THE ROCKS AND IS STAMPED DAN 1927.
 JW1512'
 JW1512'STATION, REFERENCE, AND AZIMUTH MARKS ARE STANDARD BRONZE DISKS
 JW1512'WEDGED IN DRILL HOLES IN BOULDERS.
 JW1512'
 JW1512'REFERENCE MARK NO.1 IS IN A DEPRESSION ABOUT 3 FEET NW OF THE
 JW1512'HIGHEST POINT OF THE ROCKS.  IT IS STAMPED DAN R M 1 1927.
 JW1512'
 JW1512'REFERENCE MARK NO.2 IS STAMPED DAN R M 2 1927.
 JW1512'
 JW1512'AZIMUTH MARK IS 55 PACES S OF A 3-INCH OAK TREE, 50 PACES W OF A
 JW1512'FENCE CORNER, AND 6 FEET SE OF A WITNESS POST.  IT IS IN A 3- BY
 JW1512'5-FOOT BOULDER, ABOUT FLUSH WITH THE GROUND, AND IS STAMPED
 JW1512'DAN 1941.
 JW1512'
 JW1512'REACHED FROM THE STATION BY GOING BACK DOWN THE HILL 0.7 MILE
 JW1512'AND TURNING LEFT ONTO A FIELD ROAD, THENCE SOUTHERLY 0.1 MILE,
 JW1512'THENCE WESTERLY ACROSS FIELD 0.2 MILE TO A FENCE CORNER, THENCE
 JW1512'CONTINUE 50 PACES TO THE AZIMUTH MARK.
 JW1512'
 JW1512'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 36
 JW1512'AND THE VALE SUMMIT PAVED ROAD IN THE NORTHERN EDGE OF MIDLAND,
 JW1512'GO TOWARD VALE SUMMIT 0.4 MILE AND TURN RIGHT ALMOST 180 DEG ONTO
 JW1512'OLD WINDING PAVED ROAD, THENCE 0.15 MILE CROSSING 2 SMALL BRIDGES
 JW1512'TO THE SECOND T-INTERSECTION AND TURN LEFT ONTO THE DANS ROCK
 JW1512'ROAD, THENCE GENERALLY EASTERLY UP LONG GRADE 2.8 MILES TO BARE
 JW1512'ROCKS ON THE RIGHT AND THE STATION.
 JW1512'
 JW1512'IN MEASURING TO DANS ROCK LOOKOUT TOWER, THE POINT SELECTED IS
 JW1512'THE CENTER OF THE TRIANGLE FORMED BY THE INSIDE ANCHOR BOLTS.
 JW1512'
 JW1512'THE MEASUREMENTS OF DISTANCE TO THE REFERENCE MARKS CHECKED THE
 JW1512'OLD MEASUREMENTS TO THE HUNDREDTH IN FEET AND TO ONE MILLIMETER
 JW1512'IN METERS FOR REFERENCE MARK NO.1.  THE OLD METRIC DISTANCE IS
 JW1512'HERE RETAINED.  IN THE CASE OF REFERENCE MARK NO.2, A
 JW1512'DISCREPANCY OF MINUS 1.82 FEET OR 0.555 METER WAS NOTED UPON
 JW1512'COMPARISON WITH THE OLD DISTANCE.  A RE-MEASURE WAS MADE THEN
 JW1512'AND THERE WITH THE SAME RESULT.
 JW1512'
 JW1512'A 4-FOOT STAND CLEARS ALL LOCAL OBSTRUCTIONS EXCEPT IN THE
 JW1512'DIRECTIONS OF REFERENCE MARK NO.1 AND THE LOOKOUT TOWER IN WHICH
 JW1512'DIRECTIONS 10 AND 25-FOOT TOWERS RESPECTIVELY MIGHT BE
 JW1512'NEEDED.  THE PEAK IS APPARENTLY THE HIGHEST FOR MILES IN ANY
 JW1512'DIRECTION.
 JW1512
 JW1512                          STATION RECOVERY (1955)
 JW1512
 JW1512'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1512'THE STATION WAS RECOVERED AS DESCRIBED IN 1941.  THE LOOKOUT
 JW1512'TOWER AS LOCATED IN 1941 HAS BEEN TORN DOWN.  A NEW LOOKOUT
 JW1512'TOWER HAS BEEN ERECTED ABOUT 90 FEET SOUTHWEST OF THE SITE OF
 JW1512'THE OLD ONE.  EXCEPT FOR THE AFORE MENTIONED THE 1941 DESCRIPTION
 JW1512'IS CORRECT AND ADEQUATE.  DISTANCE AND DIRECTION TO THE NEW
 JW1512'LOOKOUT TOWER ARE NOTED BELOW.
 JW1512'
 JW1512'HEIGHT OF LIGHT ABOVE STATION MARK 1.2 METERS.
 JW1512
 JW1512                          STATION RECOVERY (1973)
 JW1512
 JW1512'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JW1512'UNABLE TO MEASURE BETWEEN RMS.
 JW1512'
 JW1512'THE STATION MARK, REFERENCE MARK ONE AND THE AZIMUTH MARK WERE
 JW1512'RECOVERED AND FOUND IN GOOD CONDITION.  A NEW REFERENCE MARK THREE
 JW1512'WAS ESTABLISHED AT THIS DATE.  THE AZIMUTH MARK IS NO LONGER
 JW1512'VISIBLE FROM THE GROUND.  THE LINE TO THE AZIMUTH MARK COULD BE
 JW1512'CLEARED, HOWEVER IT WOULD BE A MAJOR PROJECT FOR ONE MAN.  THE
 JW1512'DISTANCE TO REFERENCE MARK ONE WAS WITHIN CLOSE AGREEMENT WITH
 JW1512'THE 1955 MEASUREMENT.  AN EXACT MEASUREMENT TO THE LOOKOUT
 JW1512'TOWER COULD NOT BE OBTAINED AT THIS TIME.
 JW1512'
 JW1512'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JW1512'
 JW1512'THE STATION IS LOCATED ON THE HIGHEST POINT OF DAN MOUNTAIN,
 JW1512'ABOUT 7 MILES SOUTHWEST OF CUMBERLAND, 4 MILES EAST OF MIDLAND
 JW1512'AND JUST WEST OF A STEEP CLIFF ON THE EAST EDGE OF DANS ROCK.  THE
 JW1512'PROPERTY IS OWNED BY THE STATE.
 JW1512'
 JW1512'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE
 JW1512'HIGHWAY 55, WHICH IS 4 MILES WEST OF CUMBERLAND.  GO SOUTH ON
 JW1512'STATE HIGHWAY 55 FOR 2.55 MILES TO A CROSSROADS.  TURN LEFT AND GO
 JW1512'SOUTHEAST ON STATE HIGHWAY 36 FOR 2.65 MILES TO A FORK.  BEAR LEFT
 JW1512'AND GO SOUTHEAST ON PARADISE STREET FOR 0.2 MILE TO A SIDE ROAD
 JW1512'LEFT.  TURN LEFT AND GO EAST AND NORTH ON DANS ROCK ROAD FOR 3.0
 JW1512'MILE TO THE END OF THE ROAD AT THE TOP OF THE MOUNTAIN AND THE
 JW1512'STATION ON THE RIGHT ON THE HIGHEST POINT.
 JW1512'
 JW1512'THE STATION MARK IS A STANDARD DISK STAMPED DAN 1927, CEMENTED
 JW1512'IN A DRILL HOLE IN A LARGE OUTCROPP OF ROCK WHICH DROPS OFF TO
 JW1512'THE EAST MAKING UP A STEEP ROCK CLIFF.  IT IS 101 FEET NORTHEAST
 JW1512'OF DANS ROCK LOOKOUT TOWER AND 75 FEET EAST OF THE CENTER OF THE
 JW1512'ROAD.  (NOTE 4)
 JW1512'
 JW1512'REFERENCE MARK 1 IS A STANDARD DISK STAMPED DAN NO 1 1927,
 JW1512'CEMENTED IN A DRILL HOLE IN THE NORTH PART OF THE LARGE
 JW1512'OUTCROPP.  IT IS 6 FEET WEST OF THE CLIFF.  (NOTE 12A)
 JW1512'
 JW1512'REFERENCE MARK 3 IS A STANDARD DISK STAMPED DAN 1927 NO 3 1973,
 JW1512'CEMENTED IN A DRILL HOLE IN THE OUTCROPPING ROCK AND ABOUT 2 FEET
 JW1512'LOWER THAN THE STATION.  IT IS 30 FEET WEST OF THE CLIFF.  (NOTE
 JW1512'12A)
 JW1512'
 JW1512'THE AZIMUTH MARK IS A STANDARD DISK STAMPED DAN 1941, CEMENTED
 JW1512'IN A DRILL HOLE IN A 3 BY 5 FOOT BOULDER WHICH PROJECTS 1
 JW1512'INCH.  IT IS 150 FEET WEST OF A FENCE CORNER AND 1.6 FEET EAST
 JW1512'OF A WITNESS POST.
 JW1512'
 JW1512'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTHERLY DOWN
 JW1512'THE MOUNTAIN ON DANS ROCK ROAD FOR 0.7 MILE TO A FIELD ON THE
 JW1512'LEFT.  TURN LEFT AND GO SOUTHEAST UP THROUGH THE FIELD FOR 0.15
 JW1512'MILE TO THE TOP OF A SMALL RIDGE.  TURN RIGHT AND GO SOUTHERLY
 JW1512'ACROSS THE RIDGE FOR 0.2 MILE TO THE FENCE CORNER AND THE MARK
 JW1512'AS DESCRIBED.  (NOTE 17C)
 JW1512'
 JW1512'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JW1512'4 MILES EAST OF MIDLAND.
 JW1512
 JW1512                          STATION RECOVERY (1975)
 JW1512
 JW1512'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (JRS)
 JW1512'THE STATION MARK, REFERENCE MARKS 1 AND 3 WERE RECOVERED IN
 JW1512'GOOD CONDITION.  THE AZIMUTH MARK WAS NOT RECOVERED.  THE
 JW1512'DISTANCE AND DIRECTION TO REFERENCE MARK 1 CHECKED THE 1955
 JW1512'DATA.  THERE WAS NO OLD DATA AVAILABLE ON REFERENCE MARK 3,
 JW1512'NOR WAS THE 1955 DESCRIPTION AVAILABLE.  FOLLOWING IS A NEW
 JW1512'DESCRIPTION.
 JW1512'
 JW1512'THE STATION IS LOCATED ABOUT 8-1/2 MILES SOUTHWEST OF
 JW1512'CUMBERLAND, 5-1/2 MILES SOUTH-SOUTHEAST OF FROSTBURG, ON A HIGH
 JW1512'PROMINENT, ROCKY RIDGE KNOWN LOCALLY AS DANS ROCK AND ON
 JW1512'PROPERTY OF MARYLAND FOREST SERVICE.  PERMISSION WAS GRANTED BY
 JW1512'THE REGIONAL FORESTER, GEORGE B. GILMORE, WHOSE PHONE NUMBER IS
 JW1512'301-724-8530.
 JW1512'
 JW1512'TO REACH THE STATION FROM THE POST OFFICE IN MIDLAND, GO NORTH
 JW1512'ON STATE HIGHWAY 36 FOR 0.1 MILE TO WHERE THE HIGHWAY BEARS
 JW1512'RIGHT.  BEAR RIGHT ON HIGHWAY 36 FOR 0.5 MILE TO A REVERSE
 JW1512'FORK.  TURN SHARP RIGHT, PASSING OVER TWO SMALL BRIDGES, AND GO
 JW1512'SOUTHERLY FOR 0.15 MILE TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 JW1512'SOUTHEASTERLY ON DANS ROCK ROAD FOR 3.1 MILE TO THE END OF THE
 JW1512'ROAD AT THE SUMMIT OF THE GRADE, SEVERAL RADIO TOWERS AND THE
 JW1512'STATION ON THE RIGHT, ATOP THE BARE ROCK RIDGE.
 JW1512'
 JW1512'STATION MARK IS A STANDARD DISK, STAMPED---DAN 1927---, CEMENTED IN
 JW1512'A DRILL HOLE IN THE BEDROCK THAT FORMS THE SUMMIT OF THE
 JW1512'MOUNTAIN.  IT IS 40 FEET SOUTHWEST OF THE HIGHEST POINT OF THE
 JW1512'MOUNTAIN AND 4 FEET NORTHWEST OF THE EDGE OF THE CLIFF.
 JW1512'
 JW1512'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED---DAN NO 1 1975---,
 JW1512'CEMENTED IN A DRILL HOLE IN A DEPRESSION IN THE BEDROCK THAT
 JW1512'FORMS THE HIGHEST POINT OF THE MOUNTAIN AND ABOUT 5 FEET HIGHER
 JW1512'THAN THE STATION.
 JW1512'
 JW1512'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED---DAN 1927 NO 3
 JW1512'1973---, CEMENTED IN A DRILL HOLE IN BEDROCK.  IT IS 8 FEET
 JW1512'NORTHWEST OF THE EDGE OF THE CLIFF AND ABOUT 5 FEET LOWER THAN THE
 JW1512'STATION.
 JW1512'
 JW1512'THE DISTANCE BETWEEN THE REFERENCE MARKS WAS NOT MEASURED DUE TO
 JW1512'DIFFICULT TERRAIN.
 JW1512'THE DISTANCE TO REFERENCE MARK 3 WAS COMPUTED FROM SLOPE
 JW1512'MEASUREMENTS.
 JW1512'
 JW1512'HEIGHT OF LIGHT ABOVE STATION 1.4 METERS.
 JW1512
 JW1512                          STATION RECOVERY (1987)
 JW1512
 JW1512'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (AJL)
 JW1512'THE STATION AND REFERENCE MARKS WERE RECOVERED THIS DATE.
 JW1512'THE AZIMUTH MARK WAS NOT SEARCHED FOR.
 JW1512'THE STATION IS LOCATED ABOUT 13.7 KM (8.5 MI) SOUTHWEST OF
 JW1512'CUMBERLAND,
 JW1512'8.9 KM (5.5 MI) SOUTH-SOUTHEAST OF FROSTBURG,
 JW1512'6.4 KM (4.0 MI) EAST OF MIDLAND, ON A HIGH, PROMINENT, ROCKY RIDGE
 JW1512'KNOWN LOCALLY AS DANS ROCK.
 JW1512'OWNERSHIP--MARYLAND FOREST SERVICE.  CONTACT REGIONAL FORESTER,
 JW1512'PHONE (301) 724-8530.
 JW1512'
 JW1512'TO REACH THE STATION FROM THE POST OFFICE IN MIDLAND, GO
 JW1512'NORTH FOR 1.0 KM (0.6 MI) ON STATE HIGHWAY 36 FOR A REVERSE FORK ON
 JW1512'THE RIGHT.  TURN SHARP RIGHT, SOUTHEAST, FOR 0.2 KM (0.15 MI) ON A
 JW1512'NARROW, PAVED ROAD ACROSS TWO SMALL BRIDGES TO A PAVED ROAD ON THE
 JW1512'LEFT.
 JW1512'TURN LEFT AND GO EAST FOR 5.0 KM (3.1 MI) ON DANS ROCK ROAD TO THE
 JW1512'ROAD END AT THE SUMMIT OF THE GRADE.  SEVERAL RADIO TOWERS AND THE
 JW1512'STATION ARE ON THE RIGHT, ATOP THE BARE ROCK RIDGE.
 JW1512'
 JW1512'THE STATION IS A STANDARD CGS DISK
 JW1512'STAMPED---DAN 1927---,
 JW1512'SET INTO A DRILL HOLE IN THE BEDROCK THAT FORMS THE SUMMIT OF THE
 JW1512'MOUNTAIN.
 JW1512'12.2 METERS (40.0 FT) SOUTHWEST FROM THE HIGHEST POINT OF THE
 JW1512'MOUNTAIN,
 JW1512'12.1 METERS (39.7 FT) SOUTH-SOUTHWEST FROM REFERENCE MARK NO 1,
 JW1512'9.2 METERS (30.2 FT) EAST FROM REFERENCE MARK NO 3, AND
 JW1512'1.2 METERS (4.0 FT) NORTHWEST FROM THE EDGE OF THE CLIFF.
 JW1512'
 JW1512'DESCRIBED BY C. L. SMITH, TYPED BY R. P. FLOYD.
 JW1512
 JW1512                          STATION RECOVERY (1990)
 JW1512
 JW1512'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW1512'4.9 KM (3.0 MI) EASTERLY ALONG DANS ROCK ROAD FROM THE INTERSECTION OF
 JW1512'PARADISE STREET IN MIDLAND, NEAR THE HIGHEST POINT OF A MASSSIVE ROCK
 JW1512'OUTCROP AT THE SUMMIT OF DANS MOUNTAIN, 50.3 M (165.0 FT) SOUTHEAST
 JW1512'OF THE ROAD CENTER, 15.2 M (49.9 FT) ABOVE THE LEVEL OF THE HIGHWAY,
 JW1512'14.6 M (47.9 FT) EAST OF A STEEL UTILITY POLE, 12.2 M (40.0 FT)
 JW1512'SOUTHWEST OF THE HIGHEST POINT OF THE OUTCROP, 12.1 M (39.7 FT)
 JW1512'SOUTH-SOUTHWEST OF REFERENCE MARK ONE, AND 1.2 M (3.9 FT) NORTHWEST OF
 JW1512'THE EDGE OF A PRECIPICE.
 JW1512
 JW1512                          STATION RECOVERY (1990)
 JW1512
 JW1512'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW1512'THE STATION MARK WAS RECOVERED IN GOOD CONDITION.  A COMPLETE NEW
 JW1512'DESCRIPTION FOLLOWS.
 JW1512'THE STATION IS LOCATED ABOUT 13.7 KM (8.5 MI) SOUTHWEST OF CUMBERLAND,
 JW1512'8.9 KM (5.5 MI) SOUTH-SOUTHEAST OF FROSTBURG, 6.4 KM (4.0 MI) EAST OF
 JW1512'MIDLAND, AND ON A HIGH, PROMINENT, ROCKY RIDGE LOCALLY KNOWN AS DANS
 JW1512'ROCK.  OWNERSHIP--MARYLAND FOREST SERVICE, CONTACT REGIONAL FORESTER,
 JW1512'PHONE NUMBER 301-724-8530.
 JW1512'TO REACH THE STATION FROM THE POST OFFICE IN MIDLAND (LOCATED ON STATE
 JW1512'HIGHWAY 936), GO NORTH ON STATE HIGHWAY 936 FOR 0.1 KM (0.1 MI) TO
 JW1512'CHURCH STREET.  TURN RIGHT AND GO EAST ON CHURCH STREET FOR 0.1 KM
 JW1512'(0.1 MI) TO STATE HIGHWAY 36.  TURN LEFT AND GO NORTH ON STATE
 JW1512'HIGHWAY 36 FOR 0.6 KM (0.4 MI) TO A REVERSE FORK ON RIGHT.  TURN
 JW1512'SHARP RIGHT ONTO A NARROW PAVED ROAD AND GO SOUTHEAST FOR 0.3 KM
 JW1512'(0.2 MI) , ACROSS TWO SMALL BRIDGES, TO A PAVED ROAD ON THE LEFT
 JW1512'KNOWN AS DANS ROCK ROAD.  TURN LEFT AND GO EASTERLY ON THE PAVED ROAD
 JW1512'FOR 4.8 KM (3.0 MI) TO THE END OF PAVEMENT AND A FENCED IN RADIO
 JW1512'TOWER ON THE RIGHT, END OF TRUCK TRAVEL.  PARK HERE, AND PROCEED
 JW1512'PACKING EASTERLY UP THE LARGE ROCKY SUMMIT TO THE STATION, ABOUT 40
 JW1512'FEET SOUTHWEST FROM THE HIGHEST POINT.
 JW1512'STATION MARK IS CEMENTED IN A DRILL HOLE IN ROCK OUTCROP THAT FORMS
 JW1512'THE SUMMIT OF THE MOUNTAIN.  IT IS 14.6 M (47.9 FT) EAST FROM A STEEL
 JW1512'UTILITY POLE, 12.1 M (39.7 FT) SOUTH-SOUTHWEST FROM REFERENCE MARK NO
 JW1512'1, AND 1.2 M (3.9 FT) NORTHWEST FROM THE EDGE OF THE PRECIPICE.
 JW1512'NOTE, THERE ARE SEVERAL MICRO-WAVE TOWERS IN THE AREA.
 JW1512'DESCRIBED BY D.L. SPRANGERS.TER.
 JW1512'NOTE--DO NOT ATTEMPT TO CROSS GRASS BETWEEN TAXI AND STATION.  A DRAIN
 JW1512'DITCH PARALLELS THE TAXI AND AREA IS VERY SOFT.
 JW1512'DESCRIBED BY G.R.HEID.
 JW1512
 JW1512                          STATION RECOVERY (1992)
 JW1512
 JW1512'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 JW1512'THE STATION IS LOCATED ABOUT 13.7 KM (8.50 MI) SOUTHWEST OF
 JW1512'CUMBERLAND, 8.9 KM (5.55 MI) SOUTH-SOUTHEAST OF FROSTBURG, 6.4 KM
 JW1512'(3.95 MI) EAST OF MIDLAND AND ON A HIGH PROMINENT ROCKY RIDGE LOCALLY
 JW1512'KNOWN AS DANS ROCK, STATION DISK IS CEMENTED IN A DRILL HOLE IN ROCK
 JW1512'OUTCROP THAT FORMS THE MOUNTAIN.  OWNERSHIP--MARYLAND FOREST SERVICE,
 JW1512'CONTACT REGIONAL FORESTER AT 301-777-2137.
 JW1512'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 936 AND STATE
 JW1512'HIGHWAY 36, WHICH IS JUST NORTH OF THE U.S. POST OFFICE IN MIDLAND,
 JW1512'GO NORTH ON HIGHWAY 36 FOR 0.6 KM (0.35 MI) TO A SHARP REVERSE FORK
 JW1512'ON THE RIGHT.  TURN SHARP RIGHT ON THE PAVED ROAD AND GO SOUTHEAST,
 JW1512'CROSSING TWO SMALL BRIDGES, FOR 0.32 KM (0.20 MI) TO A PAVED ROAD
 JW1512'LEFT (NO SIGN), LOCALLY KNOWN AS DANS ROCK ROAD.  TURN LEFT AND GO
 JW1512'EASTERLY ON THE PAVED WINDING ROAD UPHILL FOR 4.8 KM (3.00 MI) TO THE
 JW1512'END OF PAVEMENT AT A FENCE AROUND A RADIO TOWER ON THE RIGHT AND THE
 JW1512'END OF TRUCK TRAVEL.  FROM HERE PACK EASTERLY UP THE ROCKY SUMMIT
 JW1512'ABOUT TWO MINUTES TO THE STATION ABOUT 40 FEETSOUTHWEST FROM THE
 JW1512'HIGHEST POINT.
 JW1512'LOCATED 15.7 M (51.5 FT) EAST FROM A STEEL UTILITY POLE, 12.2 M
 JW1512'(40.0 FT) SOUTHWEST FROM A REFERENCE MARK 1, 9.4 M (30.8 FT)
 JW1512'EAST-NORTHEAST FROM A SURVEY DISK STEM, 1.98 M (6.50 FT)
 JW1512'EAST-NORTHEAST FROM THE NORTH BOLT IN A CONCRETE FOOTING AND 1.1 M
 JW1512'(3.6 FT) WEST-NORTHWEST FROM THE EDGE OF THE EAST SIDE OF DROPOFF.
 JW1512'NOTE--THE DISK HAS BEEN VANDALIZED.
 JW1512
 JW1512                          STATION RECOVERY (1995)
 JW1512
 JW1512'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (DMM)
 JW1512'RECOVERED AS DESCRIBED BY DLS IN 1990 WITH THE FOLLOWING ADDITIONAL
 JW1512'INFORMATION.
 JW1512'
 JW1512'THE REVERSE FORK MENTIONED IN THE 1990 DESCRIPTION CAN BE REACHED BY
 JW1512'GOING SOUTH ON STATE ROUTE 36 FROM ITS INTERSECTION WITH INTERSTATE
 JW1512'HIGHWAY 68. FROM THE REVERSE FORK PROCEED AS DESCRIBED.  NEAR THE END
 JW1512'OF TRUCK TRAVEL PARK NEAR BASE OF A LOOKOUT TOWER ADJACENT TO A FENCED
 JW1512'IN MICROWAVE TOWER.  FROM THE CORNER OF THE FENCE PROCEED ACROSS THE
 JW1512'FLAT PORTION OF ROCK THEN ACROSS A SMALL BOULDER FIELD TO THE HIGHEST
 JW1512'POINT AND STATION.
 JW1512
 JW1512                          STATION RECOVERY (1995)
 JW1512
 JW1512'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (CFS)
 JW1512'THE STATION IS LOCATED ABOUT 13.7 KM (8.50 MI) SOUTHWEST OF
 JW1512'CUMBERLAND, 8.9 KM (5.55 MI) SOUTH-SOUTHEAST OF FROSTBURG, 6.4 KM
 JW1512'(3.95 MI) EAST OF MIDLAND AND ON A HIGH PROMINENT ROCKY RIDGE LOCALLY
 JW1512'KNOWN AS DANS ROCK.  STATION DISK IS CEMENTED IN A DRILL HOLE IN ROCK
 JW1512'OUTCROP THAT FORMS THE MOUNTAIN.  OWNERSHIP--MARYLAND FOREST SERVICE,
 JW1512'CONTACT REGIONAL FORESTER AT 301-777-2137.  TO REACH THE STATION FROM
 JW1512'THE JUNCTION OF STATE HIGHWAYS 936 AND STATE HIGHWAY 36, WHICH IS JUST
 JW1512'NORTH OF THE US POST OFFICE IN MIDLAND, GO NORTH ON HIGHWAY 36 FOR 0.6
 JW1512'KM (0.35 MI) TO A SHARP REVERSE FORK ON THE RIGHT.  TURN SHARP RIGHT
 JW1512'ON THE PAVED ROAD AND GO SOUTHEAST, CROSSING TWO SMALL BRIDGES, FOR
 JW1512'0.32 KM (0.20 MI) TO A PAVED ROAD LEFT (NO SIGN), LOCALLY KNOWN AS
 JW1512'DANS ROCK ROAD.  TURN LEFT AND GO EASTERLY ON THE PAVED WINDING ROAD
 JW1512'UPHILL FOR 4.8 KM (3.00 MI) TO THE END OF PAVEMENT AT A FENCE AROUND A
 JW1512'RADIO TOWER ON THE RIGHT AND THE END OF TRUCK TRAVEL.  FROM HERE PACK
 JW1512'EASTERLY UP THE ROCKY SUMMIT FOR ABOUT TWO MINUTES TO THE STATION
 JW1512'ABOUT 40 FEET (12.2 M) SOUTHWEST FROM THE HIGHEST POINT.  LOCATED 15.7
 JW1512'M (51.5 FT) EAST FROM A STEEL UTILITY POLE, 12.2 M (40.0 FT) SOUTHWEST
 JW1512'FROM REFERENCE MARK 1, 9.4 M (30.8 FT) EAST-NORTHEAST FROM A SURVEY
 JW1512'DISK STEM, 1.98 M (6.50 FT) EAST-NORTHEAST FROM THE NORTH BOLT IN A
 JW1512'CONCRETE FOOTING AND 1.1 M (3.6 FT) WEST-NORTHWEST FROM THE EDGE OF
 JW1512'THE EAST SIDE OF DROPOFF. NOTE--THE DISK HAS BEEN VANDALIZED.
 JW1512
 JW1512                          STATION RECOVERY (1998)
 JW1512
 JW1512'RECOVERY NOTE BY THE NEILAN ENGINEERS INCORPORATED 1998 (TEK)
 JW1512'RECOVERED AS DESCRIBED.
 JW1512
 JW1512                          STATION RECOVERY (1999)
 JW1512
 JW1512'RECOVERY NOTE BY HAMILTON GEODETIC SERVICES 1999 (JVH)
 JW1512'RECOVERED AS DESCRIBED.  THE AREA AROUND THE STATION IS NOW A PARK.
 JW1512'STEPS AND A WALKWAY LEAD UP TO THE STATION.  THE STATION IS JUST EAST
 JW1512'OF THE SOUTHERLY METAL OBSERVATION PLATFORM.
 JW1512
 JW1512                          STATION RECOVERY (2000)
 JW1512
 JW1512'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JW1512'THE TO REACH IS ADEQUATE WITH THE FOLLOWING UPDATES.  FROM THE PARKING
 JW1512'AREA AT THE BASE OF THE FENCED IN TOWER WALK NORTH TO A WALKWAY
 JW1512'MARKED, DANS ROCK OVERLOOK.  AT THE END OF THE WALKWAY, TURN RIGHT TO
 JW1512'A METAL PLATFORM AND THE STATION JUST SOUTHEAST OF THE END OF THE
 JW1512'PLATFORM AND BETWEEN THE PLATFORM AND THE DROP OFF.  THE STATION
 JW1512'STAMPING IS NO LONGER LEGIBLE.
 JW1512
 JW1512                          STATION RECOVERY (2019)
 JW1512
 JW1512'RECOVERY NOTE BY DEWBERRY DAVIS 2019 (GDS)
 JW1512'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1563 ***********************************************************************
 JW1563  DESIGNATION -  DAN RM 1
 JW1563  PID         -  JW1563
 JW1563  STATE/COUNTY-  MD/ALLEGANY
 JW1563  COUNTRY     -  US
 JW1563  USGS QUAD   -  LONACONING (2016)
 JW1563
 JW1563                         *CURRENT SURVEY CONTROL
 JW1563  ______________________________________________________________________
 JW1563* NAD 83(1986) POSITION- 39 34 54.55   (N) 078 53 50.39   (W)   HD_HELD1
 JW1563* NAVD 88 ORTHO HEIGHT -   882.600 (meters)     2895.66  (feet) ADJUSTED
 JW1563  ______________________________________________________________________
 JW1563  GEOID HEIGHT    -        -32.286 (meters)                     GEOID18
 JW1563  DYNAMIC HEIGHT  -        882.069 (meters)     2893.92  (feet) COMP
 JW1563  MODELED GRAVITY -    979,992.1   (mgal)                       NAVD 88
 JW1563
 JW1563  VERT ORDER      -  SECOND    CLASS II
 JW1563
 JW1563.The horizontal coordinates were determined by differentially corrected
 JW1563.hand held GPS observations or other comparable positioning techniques
 JW1563.and have an estimated accuracy of +/- 3 meters.
 JW1563
 JW1563.The orthometric height was determined by differential leveling and
 JW1563.adjusted by the NATIONAL GEODETIC SURVEY
 JW1563.in June 1991.
 JW1563
 JW1563.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1563.GEOID18 height accuracy estimate available here.
 JW1563
 JW1563.Click photographs - Photos may exist for this station.
 JW1563
 JW1563.The dynamic height is computed by dividing the NAVD 88
 JW1563.geopotential number by the normal gravity value computed on the
 JW1563.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1563.degrees latitude (g = 980.6199 gals.).
 JW1563
 JW1563.The modeled gravity was interpolated from observed gravity values.
 JW1563
 JW1563;                    North         East    Units  Estimated Accuracy
 JW1563;SPC MD       -   214,293.1     237,003.2     MT  (+/- 3 meters HH1 GPS) 
 JW1563
 JW1563_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8058183456(NAD 83)
 JW1563
 JW1563                          SUPERSEDED SURVEY CONTROL
 JW1563
 JW1563.No superseded survey control is available for this station.
 JW1563
 JW1563_MARKER: DR = REFERENCE MARK DISK
 JW1563_SETTING: 66 = SET IN ROCK OUTCROP
 JW1563_STAMPING: DAN NO 1 1927
 JW1563_MARK LOGO: CGS
 JW1563_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1563+STABILITY: POSITION/ELEVATION WELL
 JW1563_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1563+SATELLITE: SATELLITE OBSERVATIONS - October 09, 1990
 JW1563
 JW1563  HISTORY     - Date     Condition        Report By
 JW1563  HISTORY     - 1927     MONUMENTED       CGS
 JW1563  HISTORY     - 19901009 GOOD             NGS
 JW1563
 JW1563                          STATION DESCRIPTION
 JW1563
 JW1563'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JW1563'4.9 KM (3.0 MI) EASTERLY ALONG DANS ROCK ROAD FROM THE INTERSECTION OF
 JW1563'PARADISE STREET IN MIDLAND, IN A MASSIVE EXPOSED AREA OF OUTCROPPING
 JW1563'BEDROCK AT THE SUMITT OF DANS MOUNTAIN, NEAR THE HIGHEST POINT OF THE
 JW1563'OUTCROP, 50.5 M (165.7 FT) SOUTHEAST OF THE ROAD CENTER, 25.2 M
 JW1563'(82.7 FT) NORTHEAST OF A STEEL UTILITY POLE, 17.0 M (55.8 FT) ABOVE
 JW1563'THE LEVEL OF THE ROAD, 12.1 M (39.7 FT) NORTH-NORTHEAST OF
 JW1563'TRIANGULATION STATION DAN, AND 2.0 M (6.6 FT) NORTHWEST OF THE EDGE
 JW1563'OF A CLIFF.  NOTE--THE MARK HAS BEEN MUTILATED.  THE MARK IS NOT
 JW1563'STAMPED 1975.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1564 ***********************************************************************
 JW1564  DESIGNATION -  DAN RM 3
 JW1564  PID         -  JW1564
 JW1564  STATE/COUNTY-  MD/ALLEGANY
 JW1564  COUNTRY     -  US
 JW1564  USGS QUAD   -  LONACONING (2016)
 JW1564
 JW1564                         *CURRENT SURVEY CONTROL
 JW1564  ______________________________________________________________________
 JW1564* NAD 83(1986) POSITION- 39 34 54.20   (N) 078 53 51.06   (W)   HD_HELD1
 JW1564* NAVD 88 ORTHO HEIGHT -   880.802 (meters)     2889.76  (feet) ADJUSTED
 JW1564  ______________________________________________________________________
 JW1564  GEOID HEIGHT    -        -32.286 (meters)                     GEOID18
 JW1564  DYNAMIC HEIGHT  -        880.271 (meters)     2888.02  (feet) COMP
 JW1564  MODELED GRAVITY -    979,991.7   (mgal)                       NAVD 88
 JW1564
 JW1564  VERT ORDER      -  SECOND    CLASS II
 JW1564
 JW1564.The horizontal coordinates were determined by differentially corrected
 JW1564.hand held GPS observations or other comparable positioning techniques
 JW1564.and have an estimated accuracy of +/- 3 meters.
 JW1564
 JW1564.The orthometric height was determined by differential leveling and
 JW1564.adjusted by the NATIONAL GEODETIC SURVEY
 JW1564.in June 1991.
 JW1564
 JW1564.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1564.GEOID18 height accuracy estimate available here.
 JW1564
 JW1564.Click photographs - Photos may exist for this station.
 JW1564
 JW1564.The dynamic height is computed by dividing the NAVD 88
 JW1564.geopotential number by the normal gravity value computed on the
 JW1564.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1564.degrees latitude (g = 980.6199 gals.).
 JW1564
 JW1564.The modeled gravity was interpolated from observed gravity values.
 JW1564
 JW1564;                    North         East    Units  Estimated Accuracy
 JW1564;SPC MD       -   214,282.6     236,987.0     MT  (+/- 3 meters HH1 GPS) 
 JW1564
 JW1564_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8056583445(NAD 83)
 JW1564
 JW1564                          SUPERSEDED SURVEY CONTROL
 JW1564
 JW1564.No superseded survey control is available for this station.
 JW1564
 JW1564_MARKER: DR = REFERENCE MARK DISK
 JW1564_SETTING: 66 = SET IN ROCK OUTCROP
 JW1564_STAMPING: DAN 1927 NO 3 1973
 JW1564_MARK LOGO: NGS
 JW1564_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1564+STABILITY: POSITION/ELEVATION WELL
 JW1564_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1564+SATELLITE: SATELLITE OBSERVATIONS - October 09, 1990
 JW1564
 JW1564  HISTORY     - Date     Condition        Report By
 JW1564  HISTORY     - 1973     MONUMENTED       NGS
 JW1564  HISTORY     - 19901009 GOOD             NGS
 JW1564
 JW1564                          STATION DESCRIPTION
 JW1564
 JW1564'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JW1564'4.9 KM (3.0 MI) EASTERLY ALONG DANS ROCK ROAD FROM THE INTERSECTION OF
 JW1564'PARADISE STREET IN MIDLAND, IN A MASSIVE EXPOSED AREA OF OUTCROPPING
 JW1564'BEDROCK, NEAR THE HIGHEST POINT OF THE OUTCROP, 41.1 M (134.8 FT)
 JW1564'SOUTHEAST OF THE ROAD CENTER, 13.7 M (44.9 FT) ABOVE THE LEVEL OF THE
 JW1564'ROAD, 9.2 M (30.2 FT) WEST OF TRIANGULATION STATION DAN, 6.2 M
 JW1564'(20.3 FT) NORTHEAST OF A STEEL UTILITY POLE, AND 2.4 M (7.9 FT)
 JW1564'NORTHWEST OF THE EDGE OF A CLIFF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR4178 ***********************************************************************
 DR4178  DESIGNATION -  DANA GRABINER
 DR4178  PID         -  DR4178
 DR4178  STATE/COUNTY-  MD/PRINCE GEORGES
 DR4178  COUNTRY     -  US
 DR4178  USGS QUAD   -  UPPER MARLBORO (2016)
 DR4178
 DR4178                         *CURRENT SURVEY CONTROL
 DR4178  ______________________________________________________________________
 DR4178* NAD 83(1986) POSITION- 38 50 17.4    (N) 076 51 47.4    (W)   HD_HELD2
 DR4178* NAVD 88 ORTHO HEIGHT -    83.933 (meters)      275.37  (feet) ADJUSTED
 DR4178  ______________________________________________________________________
 DR4178  GEOID HEIGHT    -        -32.527 (meters)                     GEOID18
 DR4178  DYNAMIC HEIGHT  -         83.886 (meters)      275.22  (feet) COMP
 DR4178  MODELED GRAVITY -    980,071.5   (mgal)                       NAVD 88
 DR4178
 DR4178  VERT ORDER      -  FIRST     CLASS II
 DR4178
 DR4178.The horizontal coordinates were established by autonomous hand held GPS
 DR4178.observations and have an estimated accuracy of +/- 10 meters.
 DR4178
 DR4178.The orthometric height was determined by differential leveling and
 DR4178.adjusted by the NATIONAL GEODETIC SURVEY
 DR4178.in August 2020.
 DR4178
 DR4178.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR4178.GEOID18 height accuracy estimate available here.
 DR4178
 DR4178.Click photographs - Photos may exist for this station.
 DR4178
 DR4178.The dynamic height is computed by dividing the NAVD 88
 DR4178.geopotential number by the normal gravity value computed on the
 DR4178.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR4178.degrees latitude (g = 980.6199 gals.).
 DR4178
 DR4178.The modeled gravity was interpolated from observed gravity values.
 DR4178
 DR4178;                    North         East    Units  Estimated Accuracy
 DR4178;SPC MD       -   130,050.      411,880.      MT  (+/- 10 meters HH2 GPS)
 DR4178
 DR4178_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3829200467(NAD 83)
 DR4178
 DR4178                          SUPERSEDED SURVEY CONTROL
 DR4178
 DR4178.No superseded survey control is available for this station.
 DR4178
 DR4178_MARKER: DV = VERTICAL CONTROL DISK
 DR4178_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 DR4178_SP_SET: OVERHEAD SIGN BASE
 DR4178_STAMPING: DANA GRABINER 2019
 DR4178_MARK LOGO: NGS
 DR4178_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR4178_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR4178_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR4178+SATELLITE: SATELLITE OBSERVATIONS - December 02, 2019
 DR4178
 DR4178  HISTORY     - Date     Condition        Report By
 DR4178  HISTORY     - 20191202 MONUMENTED       MDSHA
 DR4178
 DR4178                          STATION DESCRIPTION
 DR4178
 DR4178'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (JML)
 DR4178'THE MARK IS LOCATED ABOUT 9.8 MI (15.8 KM) NORTH OF BRANDYWINE, 8.9 MI
 DR4178'(14.3 KM) SOUTH OF LANHAM AND 6.3 MI (10.1 KM) WEST-NORTHWEST OF UPPER
 DR4178'MARLBORO JUST WEST OF THE I-495/MD 4 INTERCHANGE.  OWNERSHIP--ROAD
 DR4178'RIGHT-OF-WAY.
 DR4178'
 DR4178'TO REACH FROM I-495 AND MD ROUTE 4, GO SOUTHEAST ON MD ROUTE 4 FOR 0.2
 DR4178'MI (0.3 KM) TO AN OVERHEAD SIGN AND THE MARK ON THE LEFT IN THE
 DR4178'MEDIAN.
 DR4178'
 DR4178'IT IS 30.5 FT (9.3 M) SOUTHWEST OF THE CENTERLINE OF MD ROUTE 4
 DR4178'NORTHBOUND ROADWAY, 18.9 FT (5.8 M) NORTHEAST OF THE NORTHEAST EDGE OF
 DR4178'A TURN LANE FOR MD ROUTE 4 SOUTHBOUND ROADWAY, 11.0 FT (3.4 M)
 DR4178'SOUTHWEST OF A GUARD RAIL, 5.9 FT (1.8 M) NORTHEAST OF A GUARD RAIL
 DR4178'AND 2.6 FT (0.8 M) SOUTH OF A METAL SIGN POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6570 ***********************************************************************
 JV6570  DESIGNATION -  DANNENFELSER RESET
 JV6570  PID         -  JV6570
 JV6570  STATE/COUNTY-  MD/BALTIMORE
 JV6570  COUNTRY     -  US
 JV6570  USGS QUAD   -  WHITE MARSH (2016)
 JV6570
 JV6570                         *CURRENT SURVEY CONTROL
 JV6570  ______________________________________________________________________
 JV6570* NAD 83(1991) POSITION- 39 24 21.99760(N) 076 28 10.35869(W)   ADJUSTED
 JV6570* NAVD 88 ORTHO HEIGHT -    79.34  (+/-2cm)      260.3   (feet) VERTCON3
 JV6570  ______________________________________________________________________
 JV6570  GEOID HEIGHT    -        -32.844 (meters)                     GEOID18
 JV6570  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 JV6570  HORZ ORDER      -  THIRD
 JV6570  VERT ORDER      -  THIRD ? (See Below)
 JV6570
 JV6570.The horizontal coordinates were established by classical geodetic methods
 JV6570.and adjusted by the National Geodetic Survey in January 1992.
 JV6570
 JV6570.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6570.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6570
 JV6570.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6570.GEOID18 height accuracy estimate available here.
 JV6570
 JV6570.The vertical order pertains to the NGVD 29 superseded value.
 JV6570
 JV6570.Click photographs - Photos may exist for this station.
 JV6570
 JV6570.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6570
 JV6570. The following values were computed from the NAD 83(1991) position.
 JV6570
 JV6570;                    North         East     Units Scale Factor Converg.
 JV6570;SPC MD       -   193,223.635   445,687.058   MT  0.99999262   +0 19 58.6
 JV6570;SPC MD       -   633,934.54  1,462,224.96   sFT  0.99999262   +0 19 58.6
 JV6570;UTM  18      - 4,362,874.810   373,477.502   MT  0.99979710   -0 55 58.8
 JV6570
 JV6570!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6570!SPC MD       -   0.99999271  x   0.99999262  =   0.99998533
 JV6570!UTM  18      -   0.99999271  x   0.99979710  =   0.99978981
 JV6570
 JV6570:                Primary Azimuth Mark                     Grid Az
 JV6570:SPC MD       -  SCHENKLE                                 161 20 03.2
 JV6570:UTM  18      -  SCHENKLE                                 162 36 00.6
 JV6570
 JV6570_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7347762874(NAD 83)
 JV6570
 JV6570|---------------------------------------------------------------------|
 JV6570| PID    Reference Object                     Distance      Geod. Az  |
 JV6570|                                                           dddmmss.s |
 JV6570| CS5361 ST MICHAELS CHURCH                                 02723     |
 JV6570| JV6621 DANNENFELSER RM 1                    15.097 METERS 03450     |
 JV6570| JV6623 DANNENFELSER AZ MK                                 0440147.6 |
 JV6570| JV5402 SCHENKLE                            APPROX. 5.9 KM 1614001.8 |
 JV6570| JV5425 ST JOSEPHS CATH CH CROSS CEN        APPROX. 3.2 KM 2260123.7 |
 JV6570| JV5444 MARYLAND TRAINING SCHOOL TANK       APPROX. 4.6 KM 2893818.2 |
 JV6570| JV6622 DANNENFELSER RM 2                    32.041 METERS 30856     |
 JV6570|---------------------------------------------------------------------|
 JV6570
 JV6570                          SUPERSEDED SURVEY CONTROL
 JV6570
 JV6570  NAD 83(1986)-  39 24 21.99269(N)    076 28 10.36646(W) AD(       ) 3
 JV6570  NAD 27      -  39 24 21.60500(N)    076 28 11.50100(W) AD(       ) 1
 JV6570  NGVD 29              79.58   (m)          261.1    (f) LEVELING    3  
 JV6570
 JV6570.Superseded values are not recommended for survey control.
 JV6570
 JV6570.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6570.See file dsdata.pdf to determine how the superseded data were derived.
 JV6570
 JV6570_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6570_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6570_STAMPING: DANNENFELSER 1938 1981
 JV6570_MARK LOGO: NGS
 JV6570_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6570_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6570+STABILITY: SURFACE MOTION
 JV6570
 JV6570  HISTORY     - Date     Condition        Report By
 JV6570  HISTORY     - 1981     MONUMENTED       NGS
 JV6570
 JV6570                          STATION DESCRIPTION
 JV6570
 JV6570'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 JV6570'THE STATION IS LOCATED 19.3 KM (12.00 MI) NORTHEAST OF THE CENTER OF
 JV6570'BALTIMORE, 1.6 KM (1.00 MI) NORTHEAST OF PERRY HALL AND 0.8 KM
 JV6570'(0.50 MI) SOUTH OF GERMANTOWN.  OWNERSHIP--MS. MARIE DANNENFELSER,
 JV6570'9417 DANA VISTA ROAD, PERRY HALL, BALTIMORE, MARYLAND.  TELEPHONE
 JV6570'NUMBER 301 256 5315.
 JV6570'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 695 AND U.S.
 JV6570'HIGHWAY 1 NEAR FULLERTON, GO NORTHEAST ON U.S. HIGHWAY 1 (BELAIR ROAD)
 JV6570'FOR 5.3 KM (3.30 MI) TO DARNALL ROAD ON THE RIGHT.  TURN RIGHT AND GO
 JV6570'SOUTHEAST ON DARNALL ROAD FOR 0.8 KM (0.50 MI) TO A SIDE ROAD LEFT.
 JV6570'TURN LEFT AND GO NORTHEAST ON DANA VISTA ROAD FOR 0.15 KM (0.10 MI) TO
 JV6570'A CUL-DE-SAC AND THE STATION 36.58 M (120.0 FT) NORTH-NORTHEAST OF THE
 JV6570'NORTH-NORTHEAST EDGE OF THE CUL-DE-SAC.
 JV6570'THE STATION SURFACE DISK IS SET IN THE TOP OF THE 0.3 M (1.0 FT) ROUND
 JV6570'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  THE
 JV6570'SUB-SURFACE DISK IS SET IN THE TOP OF A 0.2 M (0.7 FT) MASS OF
 JV6570'CONCRETE WHICH IS RECESSED 0.9 M (3.0 FT) BELOW THE SURFACE OF THE
 JV6570'GROUND.  THEY ARE 34.75 M (114.0 FT) NORTH OF A POWERLINE POLE
 JV6570'NUMBERED 203563, 15.1 M (49.5 FT) NORTHEAST OF THE NORTHEAST CORNER OF
 JV6570'A HOUSE NUMBERED 9416 DANA VISTA ROAD, 16.15 M (53.0 FT) NORTH OF THE
 JV6570'NORTHWEST CORNER OF A HOUSE NUMBERED 9417 DANA VISTA ROAD, 11.58 M
 JV6570'(38.0 FT) SOUTH-SOUTHWEST OF A 36-INCH OAK TREE AND 10.94 M (35.9 FT)
 JV6570'NORTHEAST OF A FLAG POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1513 ***********************************************************************
 JW1513  DESIGNATION -  DANS ROCK LOOKOUT TOWER
 JW1513  PID         -  JW1513
 JW1513  STATE/COUNTY-  MD/ALLEGANY
 JW1513  COUNTRY     -  US
 JW1513  USGS QUAD   -  LONACONING (2016)
 JW1513
 JW1513                         *CURRENT SURVEY CONTROL
 JW1513  ______________________________________________________________________
 JW1513* NAD 83(1995) POSITION- 39 34 53.72866(N) 078 53 51.79907(W)   ADJUSTED
 JW1513* NAVD 88 ORTHO HEIGHT -   883.    (meters)     2897.    (feet) SCALED
 JW1513  ______________________________________________________________________
 JW1513  GEOID HEIGHT    -        -32.285 (meters)                     GEOID18
 JW1513  LAPLACE CORR    -        -10.54  (seconds)                    DEFLEC18
 JW1513  HORZ ORDER      -  THIRD
 JW1513
 JW1513.The horizontal coordinates were established by classical geodetic methods
 JW1513.and adjusted by the National Geodetic Survey in April 1998.
 JW1513
 JW1513.The orthometric height was scaled from a topographic map.
 JW1513
 JW1513.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1513.GEOID18 height accuracy estimate available here.
 JW1513
 JW1513.Click photographs - Photos may exist for this station.
 JW1513
 JW1513.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1513
 JW1513. The following values were computed from the NAD 83(1995) position.
 JW1513
 JW1513;                    North         East     Units Scale Factor Converg.
 JW1513;SPC MD       -   214,268.427   236,969.016   MT  1.00002567   -1 11 27.9
 JW1513;SPC MD       -   702,979.00    777,455.85   sFT  1.00002567   -1 11 27.9
 JW1513;SPC WV N     -   120,248.528   651,739.933   MT  0.99994104   +0 23 02.8
 JW1513;SPC WV N     -   394,515.38  2,138,250.10   sFT  0.99994104   +0 23 02.8
 JW1513;UTM  17      - 4,383,430.669   680,547.980   MT  1.00000135   +1 20 23.6
 JW1513
 JW1513!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1513!SPC MD       -   0.99986659  x   1.00002567  =   0.99989225
 JW1513!SPC WV N     -   0.99986659  x   0.99994104  =   0.99980763
 JW1513!UTM  17      -   0.99986659  x   1.00000135  =   0.99986793
 JW1513
 JW1513_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8054783430(NAD 83)
 JW1513
 JW1513                          SUPERSEDED SURVEY CONTROL
 JW1513
 JW1513  NAD 83(1991)-  39 34 53.72865(N)    078 53 51.79907(W) AD(       ) 3
 JW1513  NAD 83(1986)-  39 34 53.73298(N)    078 53 51.80785(W) AD(       ) 3
 JW1513  NAD 27      -  39 34 53.42000(N)    078 53 52.74000(W) AD(       ) 3
 JW1513
 JW1513.Superseded values are not recommended for survey control.
 JW1513
 JW1513.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1513.See file dsdata.pdf to determine how the superseded data were derived.
 JW1513
 JW1513_MARKER: 57 = LOOKOUT TOWER
 JW1513_MARK LOGO: CGS
 JW1513
 JW1513  HISTORY     - Date     Condition        Report By
 JW1513  HISTORY     - 1955     FIRST OBSERVED   CGS
 JW1513  HISTORY     - 1975     GOOD             NGS
 JW1513
 JW1513                          STATION DESCRIPTION
 JW1513
 JW1513'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1513'THE STATION IS LOCATED ABOUT 4 MILES EAST OF THE VILLAGE OF
 JW1513'MIDLAND AND ON THE SUMMIT OF DANS ROCK.  A TRAVERSE CONNECTION WAS
 JW1513'MADE TO THE CENTER OF THE INTERSECTION OF THE FOUR LEGS AND THE
 JW1513'DISTANCE WAS FOUND TO BE 101.27 FEET OR 30.867 METERS.
 JW1513'
 JW1513'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 36
 JW1513'AND THE VALE SUMMIT PAVED ROAD IN THE NORTHERN EDGE OF MIDLAND,
 JW1513'GO TOWARD VALE SUMMIT 0.4 MILE AND TURN RIGHT ALMOST 180 DEG ONTO
 JW1513'OLD WINDING PAVED ROAD, THENCE 0.15 MILE CROSSING 2 SMALL BRIDGES
 JW1513'TO THE SECOND T-INTERSECTION AND TURN LEFT ONTO THE DANS ROCK
 JW1513'ROAD, THENCE GENERALLY EASTERLY UP LONG GRADE 2.8 MILES TO BARE
 JW1513'ROCKS ON THE RIGHT AND THE STATION.
 JW1513'
 JW1513'IT IS A FOUR LEGGED STEEL STRUCTURE SUPPORTING AN OBSERVATION
 JW1513'CABIN AND IT IS ABOUT 100 FEET HIGH.
 JW1513
 JW1513                          STATION RECOVERY (1975)
 JW1513
 JW1513'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (WOM)
 JW1513'THE STATION, DANS ROCK LOOKOUT TOWER, IS THE APEX OF THE ROOF
 JW1513'OF THE CABIN ATOP A FOUR LEGGED SELF SUPPORTING STEEL TOWER.
 JW1513'THE OVERALL HEIGHT OF THE STRUCTURE BEING ABOUT 65 FEET.
 JW1513'
 JW1513'THE STATION IS LOCATED ABOUT 9 MILES SOUTHWEST OF CUMBERLAND, 4
 JW1513'MILES EAST OF THE VILLAGE OF MIDLAND AND ON A PEAK KNOWN AS
 JW1513'DANS PEAK.
 JW1513'
 JW1513'THE STATION WAS FOUND TO BE IN A STATE OF DISREPAIR AND WAS NOT
 JW1513'REPOSITIONED AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7428 ***********************************************************************
 HV7428  DESIGNATION -  DANVILLE
 HV7428  PID         -  HV7428
 HV7428  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7428  COUNTRY     -  US
 HV7428  USGS QUAD   -  PISCATAWAY (2016)
 HV7428
 HV7428                         *CURRENT SURVEY CONTROL
 HV7428  ______________________________________________________________________
 HV7428* NAD 83(1993) POSITION- 38 41 20.39234(N) 076 55 56.50399(W)   ADJUSTED
 HV7428* NAVD 88 ORTHO HEIGHT -    70.6   (meters)      232.    (feet) VERTCON3
 HV7428  ______________________________________________________________________
 HV7428  GEOID HEIGHT    -        -32.675 (meters)                     GEOID18
 HV7428  LAPLACE CORR    -         -5.06  (seconds)                    DEFLEC18
 HV7428  HORZ ORDER      -  FIRST
 HV7428
 HV7428.The horizontal coordinates were established by classical geodetic methods
 HV7428.and adjusted by the National Geodetic Survey in November 1994.
 HV7428
 HV7428.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7428.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7428
 HV7428.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7428.GEOID18 height accuracy estimate available here.
 HV7428
 HV7428.Click photographs - Photos may exist for this station.
 HV7428
 HV7428.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7428
 HV7428. The following values were computed from the NAD 83(1993) position.
 HV7428
 HV7428;                    North         East     Units Scale Factor Converg.
 HV7428;SPC MD       -   113,484.943   405,884.516   MT  0.99995514   +0 02 32.8
 HV7428;SPC MD       -   372,325.18  1,331,639.45   sFT  0.99995514   +0 02 32.8
 HV7428;UTM  18      - 4,284,037.194   331,936.303   MT  0.99994783   -1 12 29.5
 HV7428
 HV7428!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7428!SPC MD       -   0.99999405  x   0.99995514  =   0.99994919
 HV7428!UTM  18      -   0.99999405  x   0.99994783  =   0.99994188
 HV7428
 HV7428:                Primary Azimuth Mark                     Grid Az
 HV7428:SPC MD       -  DANVILLE AZ MK                           308 48 06.2
 HV7428:UTM  18      -  DANVILLE AZ MK                           310 03 08.5
 HV7428
 HV7428_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3193684037(NAD 83)
 HV7428
 HV7428|---------------------------------------------------------------------|
 HV7428| PID    Reference Object                     Distance      Geod. Az  |
 HV7428|                                                           dddmmss.s |
 HV7428| CX2678 DANVILLE RM 1                        21.901 METERS 11159     |
 HV7428| HV7431 WALDORF ST POLICE RAD MAST          APPROX. 6.2 KM 1323229.0 |
 HV7428| HV7422 WALDORF ATT MICROWAVE               APPROX. 8.7 KM 1730103.0 |
 HV7428| CX2679 DANVILLE RM 2                        25.343 METERS 25839     |
 HV7428| CX2677 DANVILLE AZ MK                                     3085039.0 |
 HV7428|---------------------------------------------------------------------|
 HV7428
 HV7428                          SUPERSEDED SURVEY CONTROL
 HV7428
 HV7428  NAD 83(1991)-  38 41 20.39150(N)    076 55 56.50439(W) AD(       ) 1
 HV7428  NAD 83(1986)-  38 41 20.39086(N)    076 55 56.51861(W) AD(       ) 1
 HV7428  NAD 27      -  38 41 19.97467(N)    076 55 57.61506(W) AD(       ) 1
 HV7428  NGVD 29 (07/19/86)   70.8    (m)          232.     (f) VERT ANG       
 HV7428
 HV7428.Superseded values are not recommended for survey control.
 HV7428
 HV7428.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7428.See file dsdata.pdf to determine how the superseded data were derived.
 HV7428
 HV7428_MARKER: DS = TRIANGULATION STATION DISK
 HV7428_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7428_STAMPING: DANVILLE 1970
 HV7428_MARK LOGO: CGS
 HV7428_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7428+STABILITY: SURFACE MOTION
 HV7428
 HV7428  HISTORY     - Date     Condition        Report By
 HV7428  HISTORY     - 1970     MONUMENTED       NGS
 HV7428
 HV7428                          STATION DESCRIPTION
 HV7428
 HV7428'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7428'THE STATION IS ABOUT 5-1/2 MILES SOUTH-SOUTHWEST OF CLINTON, 4-3/4
 HV7428'MILES NORTH-NORTHWEST OF WALDORF, 4-1/2 MILES WEST OF BRANDYWINE
 HV7428'AND ON PROPERTY OWNED BY SIGMUND MILLOFF, ROUTE 2, BOX 724,
 HV7428'BRANDYWINE, MARYLAND.
 HV7428'
 HV7428'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 5 AND
 HV7428'STATE HIGHWAY 373 AT T.B., GO WEST-SOUTHWEST ON STATE HIGHWAY 373
 HV7428'FOR 2.95 MILES TO A FORK.  TAKE THE RIGHT FORK AND GO WEST THEN
 HV7428'NORTHWEST ON DANVILLE ROAD FOR 0.75 MILE TO A DRIVEWAY ON THE
 HV7428'RIGHT.  (TO REACH THE AZIMUTH MARK FROM THIS POINT, CONTINUE
 HV7428'NORTHWEST ON DANVILLE ROAD FOR 0.15 MILE TO THE MARK ON THE
 HV7428'RIGHT.) TURN RIGHT AND GO NORTHEAST ON THE DRIVEWAY FOR 0.05
 HV7428'MILE TO THE STATION ON THE RIGHT.
 HV7428'
 HV7428'THE STATION MARK IS A STANDARD DISK, STAMPED DANVILLE 1970, SET
 HV7428'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV7428'FLUSH WITH THE GROUND SURFACE.  IT IS 100.2 FEET SOUTH-SOUTHEAST OF
 HV7428'A POWER LINE POLE NUMBERED 845564, 65.5 FEET EAST-SOUTHEAST
 HV7428'OF THE CENTERLINE OF THE DRIVEWAY, 55.5 FEET SOUTH-SOUTHEAST OF
 HV7428'THE CENTER OF A GATE IN A BOARD FENCE, AND 15.6 FEET SOUTHWEST OF
 HV7428'A BOARD FENCE.  THE UNDERGROUND MARK IS 38 INCHES BELOW THE
 HV7428'GROUND SURFACE.
 HV7428'
 HV7428'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED DANVILLE NO 1 1970,
 HV7428'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7428'IS FLUSH WITH THE GROUND SURFACE.  IT IS 126.0 FEET SOUTHEAST OF
 HV7428'THE CENTER OF THE GATE, 72.6 FEET SOUTH-SOUTHWEST OF A 2 FOOT IN
 HV7428'DIAMETER OAK TREE, 1.0 FEET SOUTHWEST OF A BOARD FENCE AND IS
 HV7428'ABOUT 1 FOOT LOWER IN ELEVATION THAN THE STATION.
 HV7428'
 HV7428'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED DANVILLE NO 2 1970,
 HV7428'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7428'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 108.0 FEET
 HV7428'SOUTH-SOUTHWEST OF THE POWER LINE POLE NUMBERED 845564, 11.0 FEET
 HV7428'SOUTH-SOUTHEAST OF THE CENTERLINE OF THE DRIVEWAY, 1.2 FEET
 HV7428'SOUTH-SOUTHEAST OF A FENCE AND ABOUT 3 FEET LOWER IN ELEVATION
 HV7428'THAN THE STATION.
 HV7428'
 HV7428'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED DANVILLE 1970, SET
 HV7428'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7428'PROJECTS 1 INCH ABOVE THE GROUND SURFACE.  IT IS 45.5 FEET NORTH
 HV7428'OF A POWER LINE POLE NUMBERED PEP 839339, 33.6 FEET NORTHEAST OF
 HV7428'THE CENTERLINE OF DANVILLE ROAD, 1.5 FEET WEST-SOUTHWEST OF A
 HV7428'FENCE AND 1.3 FEET SOUTH-SOUTHEAST OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7182 ***********************************************************************
 HV7182  DESIGNATION -  DAR
 HV7182  PID         -  HV7182
 HV7182  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7182  COUNTRY     -  US
 HV7182  USGS QUAD   -  DEALE (2016)
 HV7182
 HV7182                         *CURRENT SURVEY CONTROL
 HV7182  ______________________________________________________________________
 HV7182* NAD 83(1991) POSITION- 38 50 27.31285(N) 076 31 56.72771(W)   ADJUSTED
 HV7182* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7182  ______________________________________________________________________
 HV7182  GEOID HEIGHT    -        -33.474 (meters)                     GEOID18
 HV7182  LAPLACE CORR    -         -3.57  (seconds)                    DEFLEC18
 HV7182  HORZ ORDER      -  THIRD
 HV7182
 HV7182.The horizontal coordinates were established by classical geodetic methods
 HV7182.and adjusted by the National Geodetic Survey in January 1992.
 HV7182
 HV7182.The orthometric height was scaled from a topographic map.
 HV7182
 HV7182.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7182.GEOID18 height accuracy estimate available here.
 HV7182
 HV7182.Click photographs - Photos may exist for this station.
 HV7182
 HV7182.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7182
 HV7182. The following values were computed from the NAD 83(1991) position.
 HV7182
 HV7182;                    North         East     Units Scale Factor Converg.
 HV7182;SPC MD       -   130,450.965   440,592.732   MT  0.99995003   +0 17 36.5
 HV7182;SPC MD       -   427,987.87  1,445,511.32   sFT  0.99995003   +0 17 36.5
 HV7182;UTM  18      - 4,300,239.148   367,004.646   MT  0.99981781   -0 57 40.4
 HV7182
 HV7182!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7182!SPC MD       -   1.00000514  x   0.99995003  =   0.99995517
 HV7182!UTM  18      -   1.00000514  x   0.99981781  =   0.99982295
 HV7182
 HV7182:                Primary Azimuth Mark                     Grid Az
 HV7182:SPC MD       -  CHALK 2                                  239 48 55.3
 HV7182:UTM  18      -  CHALK 2                                  241 04 12.2
 HV7182
 HV7182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6700400239(NAD 83)
 HV7182
 HV7182|---------------------------------------------------------------------|
 HV7182| PID    Reference Object                     Distance      Geod. Az  |
 HV7182|                                                           dddmmss.s |
 HV7182| HV7221 APPLE RM                             11.407 METERS 05433     |
 HV7182| CX2680 DAR RM                               13.095 METERS 10036     |
 HV7182| HV7181 CHALK 2                             APPROX. 0.7 KM 2400631.8 |
 HV7182| HV7189 GALESVILLE TANK                     APPROX. 0.9 KM 2913656.0 |
 HV7182|---------------------------------------------------------------------|
 HV7182
 HV7182                          SUPERSEDED SURVEY CONTROL
 HV7182
 HV7182  NAD 83(1986)-  38 50 27.30929(N)    076 31 56.73934(W) AD(       ) 3
 HV7182  NAD 27      -  38 50 26.90100(N)    076 31 57.88700(W) AD(       ) 3
 HV7182
 HV7182.Superseded values are not recommended for survey control.
 HV7182
 HV7182.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7182.See file dsdata.pdf to determine how the superseded data were derived.
 HV7182
 HV7182_MARKER: DS = TRIANGULATION STATION DISK
 HV7182_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7182
 HV7182  HISTORY     - Date     Condition        Report By
 HV7182  HISTORY     - 1933     MONUMENTED       CGS
 HV7182  HISTORY     - 1943     GOOD             CGS
 HV7182  HISTORY     - 1975     MARK NOT FOUND   MDDNR
 HV7182  HISTORY     - 20031002 MARK NOT FOUND   USPSQD
 HV7182
 HV7182                          STATION DESCRIPTION
 HV7182
 HV7182'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7182'STATION IS ON THE E SIDE OF WEST RIVER OPPOSITE GALESVILLE, ON A
 HV7182'ROUNDING POINT WHERE THE SHORELINE CHANGES FROM A 5-FOOT BLUFF TO
 HV7182'A FLAT MARSH COVERED WITH GRASS.  STATION IS 4 YARDS FROM THE
 HV7182'EDGE OF THE BLUFF ON GROUND SLOPING AWAY FROM THE RIVER, 60 FEET
 HV7182'SW FROM CORNER OF TWO-STORY HOUSE.
 HV7182'
 HV7182'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7182'CONCRETE AS DESCRIBED.
 HV7182
 HV7182                          STATION RECOVERY (1943)
 HV7182
 HV7182'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7182'RECOVERED AS DESCRIBED.  DESCRIPTION ADEQUATE EXCEPT FOR THE
 HV7182'FOLLOWING DISCREPANCY--THE STATION IS 165 FEET SW OF CORNER OF
 HV7182'TWO-STORY HOUSE, NOT 60 FEET AS DESCRIBED.
 HV7182
 HV7182                          STATION RECOVERY (1975)
 HV7182
 HV7182'RECOVERY NOTE BY MD DEPT OF NAT RES 1975 (GEH)
 HV7182'DAR 1933 DESTROYED.
 HV7182'
 HV7182'DAR NO 1 1933 DESTROYED.
 HV7182'
 HV7182'MDSFC- USCS RECOVD. (SEE ENCLOSED DATA ON NEW MON. SET (APPLE RM 1906)
 HV7182'
 HV7182'PRESENT PROP. OWNER STATED THAT AREA OF STA AND RM 1 WAS GRADED IN
 HV7182'1965 AND THAT THE MARKS WERE PROBABLY KNOCKED OUT.  SUB-SURFACE
 HV7182'WAS DUG FOR TO DEPTH OF 3 FT AND NOT RECOVERED
 HV7182
 HV7182                          STATION RECOVERY (2003)
 HV7182
 HV7182'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7182'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5818 ***********************************************************************
 HV5818  DESIGNATION -  DARCE
 HV5818  PID         -  HV5818
 HV5818  STATE/COUNTY-  MD/QUEEN ANNES
 HV5818  COUNTRY     -  US
 HV5818  USGS QUAD   -  QUEENSTOWN (2016)
 HV5818
 HV5818                         *CURRENT SURVEY CONTROL
 HV5818  ______________________________________________________________________
 HV5818* NAD 83(1991) POSITION- 38 53 06.88472(N) 076 11 09.33868(W)   ADJUSTED
 HV5818* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5818  ______________________________________________________________________
 HV5818  GEOID HEIGHT    -        -34.162 (meters)                     GEOID18
 HV5818  LAPLACE CORR    -         -4.56  (seconds)                    DEFLEC18
 HV5818  HORZ ORDER      -  THIRD
 HV5818
 HV5818.The horizontal coordinates were established by classical geodetic methods
 HV5818.and adjusted by the National Geodetic Survey in January 1992.
 HV5818
 HV5818.The orthometric height was scaled from a topographic map.
 HV5818
 HV5818.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5818.GEOID18 height accuracy estimate available here.
 HV5818
 HV5818.Click photographs - Photos may exist for this station.
 HV5818
 HV5818.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5818
 HV5818. The following values were computed from the NAD 83(1991) position.
 HV5818
 HV5818;                    North         East     Units Scale Factor Converg.
 HV5818;SPC MD       -   135,582.388   470,629.472   MT  0.99994986   +0 30 39.4
 HV5818;SPC MD       -   444,823.22  1,544,056.86   sFT  0.99994986   +0 30 39.4
 HV5818;UTM  18      - 4,304,710.615   397,141.223   MT  0.99973028   -0 44 40.4
 HV5818
 HV5818!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5818!SPC MD       -   1.00000524  x   0.99994986  =   0.99995510
 HV5818!UTM  18      -   1.00000524  x   0.99973028  =   0.99973552
 HV5818
 HV5818_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9714104710(NAD 83)
 HV5818
 HV5818|---------------------------------------------------------------------|
 HV5818| PID    Reference Object                     Distance      Geod. Az  |
 HV5818|                                                           dddmmss.s |
 HV5818| HV5774 TWIXT                               228.806 METERS 21952     |
 HV5818| HV5819 FERRY                               386.090 METERS 35405     |
 HV5818|---------------------------------------------------------------------|
 HV5818
 HV5818                          SUPERSEDED SURVEY CONTROL
 HV5818
 HV5818  NAD 83(1986)-  38 53 06.88018(N)    076 11 09.35174(W) AD(       ) 3
 HV5818  NAD 27      -  38 53 06.45200(N)    076 11 10.53200(W) AD(       ) 3
 HV5818  USSD        -  38 53 06.84500(N)    076 11 10.30800(W) AD(       ) 3
 HV5818
 HV5818.Superseded values are not recommended for survey control.
 HV5818
 HV5818.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5818.See file dsdata.pdf to determine how the superseded data were derived.
 HV5818
 HV5818_MARKER: Z = SEE DESCRIPTION
 HV5818_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5818_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5818+STABILITY: SURFACE MOTION
 HV5818
 HV5818  HISTORY     - Date     Condition        Report By
 HV5818  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5818  HISTORY     - 1939     MARK NOT FOUND   CGS
 HV5818  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5818
 HV5818                          STATION DESCRIPTION
 HV5818
 HV5818'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5818'STATION IS ON WYE ISLAND, ON EASTERN SHORE OF BRANCH OF WYE RIVER
 HV5818'BOUNDING WYE ISLAND ON W, ON CEDAR POINT, AT FERRY LANDING, ABOUT
 HV5818'1/4 MILE S OF DRUM POINT.  STATION IS IN CULTIVATED LAND, ABOUT 10
 HV5818'FEET ABOVE HIGH WATER, 8 YARDS S OF POINT OF BANK, 23 YARDS NW OF
 HV5818'HOUSE, AND 55 YARDS ENE OF FERRY LANDING AT FOOT OF BANK. STATION
 HV5818'IS MARKED BY HOLE IN CENTER OF TOP OF MARYLAND SHELL FISH SURVEY
 HV5818'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG WITH
 HV5818'TOP PROJECTING ABOUT 4 INCHES. LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5818'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH
 HV5818'DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW BASE OF MONUMENT.
 HV5818'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV5818'FOLLOWS--PEAK BETWEEN TWO CHIMNEYS OF HOUSE, 1-1/4 MILES, S 30
 HV5818'DEG 16 MIN W.  NEAR CORNER OF BRICK HOUSE, 5/8 MILE, N 89 DEG 18
 HV5818'MIN W.  LEFT CORNER OF BRICK HOUSE, 1/2 MILE, N 9 DEG 15 MIN W.
 HV5818'NEAR PEAK OF HOUSE, 1-1/4 MILES, N 6 DEG 11 MIN W. CROSS ON
 HV5818'CHURCH, 3/4 MILE, N 3 DEG 45 MIN E.  LEFT CORNER OF HOUSE 3/4
 HV5818'MILE, N 47 DEG 6 MIN E.  NEAR PEAK OF HOUSE, 1-1/2 MILES, N 75
 HV5818'DEG 32 MIN E.  LEFT CORNER OF SHED, 27.25 METERS (89.4 FEET), S 64
 HV5818'DEG 24 MIN E.  RIGHT CORNER OF HOUSE, 21.98 METERS (72.1 FEET), S
 HV5818'39 DEG 19 MIN E.
 HV5818
 HV5818                          STATION RECOVERY (1939)
 HV5818
 HV5818'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV5818'SEARCHED FOR BUT NOT FOUND.  NEARBY OBJECTS TO WHICH IT IS
 HV5818'REFERENCED ARE NO LONGER IN EXISTENCE.
 HV5818
 HV5818                          STATION RECOVERY (1940)
 HV5818
 HV5818'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5818'STATION MARK SEARCHED FOR BUT NOT FOUND.  REFERENCE HOUSE AND SHED
 HV5818'DEMOLISHED.  MARK WAS ORIGINALLY LOCATED IN CULTIVATED FIELD AND
 HV5818'WAS PROBABLY PLOWED OUT.
 HV5818'
 HV5818'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1096 ***********************************************************************
 HV1096  DESIGNATION -  DARCY
 HV1096  PID         -  HV1096
 HV1096  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1096  COUNTRY     -  US
 HV1096  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1096
 HV1096                         *CURRENT SURVEY CONTROL
 HV1096  ______________________________________________________________________
 HV1096* NAD 83(1993) POSITION- 38 51 22.14688(N) 076 51 06.87154(W)   ADJUSTED
 HV1096* NAVD 88 ORTHO HEIGHT -    85.150 (meters)      279.36  (feet) ADJUSTED
 HV1096  ______________________________________________________________________
 HV1096  GEOID HEIGHT    -        -32.529 (meters)                     GEOID18
 HV1096  LAPLACE CORR    -         -5.36  (seconds)                    DEFLEC18
 HV1096  DYNAMIC HEIGHT  -         85.102 (meters)      279.21  (feet) COMP
 HV1096  MODELED GRAVITY -    980,074.5   (mgal)                       NAVD 88
 HV1096
 HV1096  HORZ ORDER      -  SECOND
 HV1096  VERT ORDER      -  SECOND    CLASS 0
 HV1096
 HV1096.The horizontal coordinates were established by classical geodetic methods
 HV1096.and adjusted by the National Geodetic Survey in November 1994.
 HV1096
 HV1096.The orthometric height was determined by differential leveling and
 HV1096.adjusted by the NATIONAL GEODETIC SURVEY
 HV1096.in June 1991.
 HV1096
 HV1096.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1096.GEOID18 height accuracy estimate available here.
 HV1096
 HV1096.Click photographs - Photos may exist for this station.
 HV1096
 HV1096.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1096
 HV1096.The dynamic height is computed by dividing the NAVD 88
 HV1096.geopotential number by the normal gravity value computed on the
 HV1096.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1096.degrees latitude (g = 980.6199 gals.).
 HV1096
 HV1096.The modeled gravity was interpolated from observed gravity values.
 HV1096
 HV1096. The following values were computed from the NAD 83(1993) position.
 HV1096
 HV1096;                    North         East     Units Scale Factor Converg.
 HV1096;SPC MD       -   132,048.257   412,853.897   MT  0.99994991   +0 05 34.6
 HV1096;SPC MD       -   433,228.32  1,354,504.83   sFT  0.99994991   +0 05 34.6
 HV1096;UTM  18      - 4,302,443.334   339,309.761   MT  0.99991797   -1 09 43.5
 HV1096
 HV1096!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1096!SPC MD       -   0.99999174  x   0.99994991  =   0.99994165
 HV1096!UTM  18      -   0.99999174  x   0.99991797  =   0.99990971
 HV1096
 HV1096:                Primary Azimuth Mark                     Grid Az
 HV1096:SPC MD       -  DARCY AZ MK                              319 46 02.2
 HV1096:UTM  18      -  DARCY AZ MK                              321 01 20.3
 HV1096
 HV1096_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3930902443(NAD 83)
 HV1096
 HV1096|---------------------------------------------------------------------|
 HV1096| PID    Reference Object                     Distance      Geod. Az  |
 HV1096|                                                           dddmmss.s |
 HV1096| HV1097 DARCY RM 3                           23.305 METERS 14906     |
 HV1096| HV7502 ANDREWS AFB E TANK                  APPROX. 4.5 KM 1775249.9 |
 HV1096| HV1098 DARCY RM 2                           26.112 METERS 24831     |
 HV1096| HV7617 SUITLAND US ARMY RELAY TOWER        APPROX. 7.5 KM 2600719.8 |
 HV1096| HV7611 SUITLAND TANK                       APPROX. 6.5 KM 2623542.3 |
 HV1096| HV1095 DARCY AZ MK                                        3195136.8 |
 HV1096| HV4262 DARCY RM 1                           23.870 METERS 34517     |
 HV1096|---------------------------------------------------------------------|
 HV1096
 HV1096                          SUPERSEDED SURVEY CONTROL
 HV1096
 HV1096  NAD 83(1991)-  38 51 22.14626(N)    076 51 06.87173(W) AD(       ) 2
 HV1096  NAD 83(1986)-  38 51 22.14455(N)    076 51 06.88420(W) AD(       ) 2
 HV1096  NAD 27      -  38 51 21.73828(N)    076 51 07.98821(W) AD(       ) 2
 HV1096  NGVD 29              85.39   (m)          280.2    (f) LEVELING    3  
 HV1096  NGVD 29 (11/26/84)   85.390  (m)          280.15   (f) ADJUSTED    2 0
 HV1096
 HV1096.Superseded values are not recommended for survey control.
 HV1096
 HV1096.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1096.See file dsdata.pdf to determine how the superseded data were derived.
 HV1096
 HV1096_MARKER: DS = TRIANGULATION STATION DISK
 HV1096_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1096_STAMPING: DARCY 1958
 HV1096_MARK LOGO: CGS
 HV1096_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1096+STABILITY: SURFACE MOTION
 HV1096
 HV1096  HISTORY     - Date     Condition        Report By
 HV1096  HISTORY     - 1958     MONUMENTED       CGS
 HV1096  HISTORY     - 1958     GOOD             CGS
 HV1096  HISTORY     - 1963     GOOD             MDDT
 HV1096
 HV1096                          STATION DESCRIPTION
 HV1096
 HV1096'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1096'STATION IS LOCATED ABOUT 10.0 MILES EAST-NORTHEAST OF THE CENTER OF
 HV1096'WASHINGTON D.C., ABOUT 6.0 MILES NORTHWEST OF UPPER MARLSBORO, ABOUT
 HV1096'3.0 MILES NORTH OF ANDREWS AIR FORCE BASE AND ABOUT 1-1/2 MILES
 HV1096'NORTHEAST OF FORRESTVILLE.  STATION IS 68 FEET SOUTHWEST OF
 HV1096'APPROXIMATE CENTERLINE OF ROAD, 10-1/2 FEET SOUTHWEST OF A
 HV1096'TRIANGLE BLAZED TREE, 10 FEET WEST-NORTHWEST OF WITNESS POST AND
 HV1096'ABOUT 20 YARDS WEST OF A BURNED OUT SHACK.  THE MARK PROJECTS 6
 HV1096'INCHES AND THE DISK IS STAMPED DARCY 1958.
 HV1096'
 HV1096'REFERENCE MARK NO. 1 IS 20 FEET SOUTHWEST OF APPROXIMATE CENTERLINE
 HV1096'OF ROAD, 25 FEET WEST OF POWERLINE POLE AND 22 FEET NORTH-NORTHEAST
 HV1096'OF A PINE TREE.  THE MARK PROJECTS 6 INCHES AND THE DISK IS STAMPED
 HV1096'DARCY NO 1 1958.
 HV1096'
 HV1096'REFERENCE MARK NO. 2 IS 33 FEET NORTH OF A 12 INCH PINE TREE.  THE
 HV1096'MARK PROJECTS 6 INCHES AND THE DISK IS STAMPED DARCY NO 2 1958.
 HV1096'
 HV1096'AZIMUTH MARK IS 19 FEET WEST-SOUTHWEST OF APPROXIMATE CENTERLINE OF
 HV1096'DRIVEWAY, 80 FEET SOUTH OF WATER WELL AT CORNER OF BURNED OUT HOUSE
 HV1096'AND 3-1/2 FEET SOUTHEAST OF WITNESS POST.  THE MARK PROJECTS 3
 HV1096'INCHES AND THE DISK IS STAMPED DARCY 1958.
 HV1096'
 HV1096'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 4 AND 458 WHICH IS
 HV1096'ABOUT 6.0 MILES EAST-SOUTHEAST OF THE CENTER OF WASHINGTON D.C., GO
 HV1096'SOUTHEASTERLY ON STATE HIGHWAY NO. 4 FOR 1.7 MILES TO TRAFFIC LIGHT
 HV1096'AT CROSSROADS.  CONTINUE SOUTHEASTERLY ON STATE HIGHWAY NO. 4 FOR
 HV1096'0.6 MILE TO SIDE ROAD LEFT AT SERVICE STATION.  TURN LEFT AND GO
 HV1096'EAST-NORTHEAST ON WESTPHALIN ROAD FOR 1.1 MILE TO FORKS.  TAKE
 HV1096'LEFT FORK AND GO NORTHERLY ON DARCY ROAD FOR 0.85 MILE TO SIDE
 HV1096'ROAD RIGHT (WASHINGTON AVENUE).  CONTINUE NORTHERLY ON DARCY ROAD
 HV1096'FOR 0.2 MILE TO CLEARING ON LEFT (WEST) SIDE OF ROAD AND STATION
 HV1096'AS DESCRIBED.  CONTINUE NORTHWESTERLY ON DARCY ROAD FOR 0.4 MILE
 HV1096'TO DRIVEWAY ON RIGHT LEADING TO BURNED OUT WHITE HOUSE.  TURN
 HV1096'RIGHT AND GO NORTHERLY ON DRIVEWAY FOR ABOUT 20 YARDS TO AZIMUTH
 HV1096'MARK ON LEFT (WEST) SIDE OF DRIVEWAY AS DESCRIBED.
 HV1096'
 HV1096'DUE TO OBSTRUCTION, THE DISTANCE BETWEEN REFERENCE MARK NO. 1 AND
 HV1096'REFERENCE MARK NO. 2 WAS NOT MEASURED.
 HV1096'
 HV1096'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV1096
 HV1096                          STATION RECOVERY (1958)
 HV1096
 HV1096'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV1096'2.4 MI NE FROM FORESTVILLE.
 HV1096'ABOUT 1.2 MILES NORTH ALONG THE FORESTVILLE ROAD FROM THE
 HV1096'INTERSECTION OF STATE HIGHWAY 4 AT FORESTVILLE, THENCE 1.2 MILES
 HV1096'EAST ALONG DARCY ROAD, 71 FEET SOUTHWEST OF THE CENTER LINE
 HV1096'OF DARCY ROAD, 10 1/2 FEET SOUTHWEST OF A BLAZED TREE, ABOUT
 HV1096'60 FEET WEST OF A BURNED OUT BUILDING, 10 FEET WEST-NORTHWEST
 HV1096'OF A WHITE WOODEN WITNESS POST, SET IN THE TOP OF A CONCRETE
 HV1096'POST PROJECTING 4 INCHES ABOVE THE GROUND AND ABOUT LEVEL WITH
 HV1096'THE ROAD.
 HV1096
 HV1096                          STATION RECOVERY (1963)
 HV1096
 HV1096'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 HV1096'STATION, R.M. 2 AND AZIMUTH MARK RECOVERED AS DESCRIBED IN GOOD
 HV1096'CONDITION.  R.M. 1 WAS DESTROYED.  A NEW REFERENCE MARK R.M. 3 WAS
 HV1096'SET.
 HV1096'
 HV1096'R.M. 3 IS 68.0 FEET SOUTH OF THE CENTER LINE OF DARCY ROAD.  A
 HV1096'STANDARD DISK SET IN TOP OF A CONCRETE POST PROJECTING 3 INCHES AND
 HV1096'STAMPED DARCY NO 3 1963.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1095 ***********************************************************************
 HV1095  DESIGNATION -  DARCY AZ MK
 HV1095  PID         -  HV1095
 HV1095  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1095  COUNTRY     -  US
 HV1095  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1095
 HV1095                         *CURRENT SURVEY CONTROL
 HV1095  ______________________________________________________________________
 HV1095* NAD 83(1986) POSITION- 38 51 33.     (N) 076 51 19.     (W)   SCALED
 HV1095* NAVD 88 ORTHO HEIGHT -    82.970 (meters)      272.21  (feet) ADJUSTED
 HV1095  ______________________________________________________________________
 HV1095  GEOID HEIGHT    -        -32.515 (meters)                     GEOID18
 HV1095  DYNAMIC HEIGHT  -         82.924 (meters)      272.06  (feet) COMP
 HV1095  MODELED GRAVITY -    980,074.7   (mgal)                       NAVD 88
 HV1095
 HV1095  VERT ORDER      -  SECOND    CLASS 0
 HV1095
 HV1095.The horizontal coordinates were scaled from a map and have
 HV1095.an estimated accuracy of +/- 6 seconds.
 HV1095
 HV1095.The orthometric height was determined by differential leveling and
 HV1095.adjusted by the NATIONAL GEODETIC SURVEY
 HV1095.in June 1991.
 HV1095
 HV1095.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1095.GEOID18 height accuracy estimate available here.
 HV1095
 HV1095.Click photographs - Photos may exist for this station.
 HV1095
 HV1095.The dynamic height is computed by dividing the NAVD 88
 HV1095.geopotential number by the normal gravity value computed on the
 HV1095.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1095.degrees latitude (g = 980.6199 gals.).
 HV1095
 HV1095.The modeled gravity was interpolated from observed gravity values.
 HV1095
 HV1095;                    North         East    Units  Estimated Accuracy
 HV1095;SPC MD       -   132,380.      412,560.      MT  (+/- 180 meters Scaled)
 HV1095
 HV1095_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ390027(NAD 83)
 HV1095
 HV1095                          SUPERSEDED SURVEY CONTROL
 HV1095
 HV1095  NGVD 29 (11/26/84)   83.211  (m)          273.00   (f) ADJUSTED    2 0
 HV1095
 HV1095.Superseded values are not recommended for survey control.
 HV1095
 HV1095.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1095.See file dsdata.pdf to determine how the superseded data were derived.
 HV1095
 HV1095_MARKER: DZ = AZIMUTH MARK DISK
 HV1095_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1095_STAMPING: DARCY 1958
 HV1095_MARK LOGO: CGS
 HV1095_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1095+STABILITY: SURFACE MOTION
 HV1095
 HV1095  HISTORY     - Date     Condition        Report By
 HV1095  HISTORY     - 1958     MONUMENTED       CGS
 HV1095
 HV1095                          STATION DESCRIPTION
 HV1095
 HV1095'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1095'2.1 MI NE FROM FORESTVILLE.
 HV1095'ABOUT 1.2 MILES NORTH ALONG FORESTVILLE ROAD FROM THE INTERSECTION
 HV1095'OF STATE HIGHWAY 4 AT FORESTVILLE, THENCE 0.9 MILE EAST ALONG
 HV1095'DARCY ROAD, NEAR THE T JUNCTION OF A PRIVATE ROAD LEADING NORTH
 HV1095'TO A RESIDENT, 171 FEET NORTH OF THE CENTER LINE OF DARCY ROAD,
 HV1095'19 FEET WEST OF THE CENTER LINE OF DRIVEWAY, 4 FEET SOUTHEAST
 HV1095'OF A WHITE WOODEN WITNESS POST AND SET IN THE TOP OF A CONCRETE
 HV1095'POST PROJECTING 5 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1098 ***********************************************************************
 HV1098  DESIGNATION -  DARCY RM 2
 HV1098  PID         -  HV1098
 HV1098  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1098  COUNTRY     -  US
 HV1098  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1098
 HV1098                         *CURRENT SURVEY CONTROL
 HV1098  ______________________________________________________________________
 HV1098* NAD 83(1986) POSITION- 38 51 21.84   (N) 076 51 07.88   (W)   HD_HELD1
 HV1098* NAVD 88 ORTHO HEIGHT -    84.364 (meters)      276.78  (feet) ADJUSTED
 HV1098  ______________________________________________________________________
 HV1098  GEOID HEIGHT    -        -32.528 (meters)                     GEOID18
 HV1098  DYNAMIC HEIGHT  -         84.317 (meters)      276.63  (feet) COMP
 HV1098  MODELED GRAVITY -    980,074.5   (mgal)                       NAVD 88
 HV1098
 HV1098  VERT ORDER      -  SECOND    CLASS 0
 HV1098
 HV1098.The horizontal coordinates were determined by differentially corrected
 HV1098.hand held GPS observations or other comparable positioning techniques
 HV1098.and have an estimated accuracy of +/- 3 meters.
 HV1098
 HV1098.The orthometric height was determined by differential leveling and
 HV1098.adjusted by the NATIONAL GEODETIC SURVEY
 HV1098.in June 1991.
 HV1098
 HV1098.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1098.GEOID18 height accuracy estimate available here.
 HV1098
 HV1098.Click photographs - Photos may exist for this station.
 HV1098
 HV1098.The dynamic height is computed by dividing the NAVD 88
 HV1098.geopotential number by the normal gravity value computed on the
 HV1098.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1098.degrees latitude (g = 980.6199 gals.).
 HV1098
 HV1098.The modeled gravity was interpolated from observed gravity values.
 HV1098
 HV1098;                    North         East    Units  Estimated Accuracy
 HV1098;SPC MD       -   132,038.8     412,829.6     MT  (+/- 3 meters HH1 GPS) 
 HV1098
 HV1098_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3928502434(NAD 83)
 HV1098
 HV1098                          SUPERSEDED SURVEY CONTROL
 HV1098
 HV1098  NGVD 29 (11/26/84)   84.604  (m)          277.57   (f) ADJUSTED    2 0
 HV1098
 HV1098.Superseded values are not recommended for survey control.
 HV1098
 HV1098.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1098.See file dsdata.pdf to determine how the superseded data were derived.
 HV1098
 HV1098_MARKER: DR = REFERENCE MARK DISK
 HV1098_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1098_STAMPING: DARCY NO 2 1958
 HV1098_MARK LOGO: CGS
 HV1098_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1098+STABILITY: SURFACE MOTION
 HV1098
 HV1098  HISTORY     - Date     Condition        Report By
 HV1098  HISTORY     - 1958     MONUMENTED       CGS
 HV1098
 HV1098                          STATION DESCRIPTION
 HV1098
 HV1098'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1098'2.4 MI NE FROM FORESTVILLE.
 HV1098'ABOUT 1.2 MILES NORTH ALONG THE FORESTVILLE ROAD FROM THE
 HV1098'INTERSECTION OF STATE HIGHWAY 4 AT FORESTVILLE, THENCE 1.2
 HV1098'MILES EAST ALONG THE DARCY ROAD, 33 FEET NORTH OF A 12-INCH
 HV1098'PINE TREE, 85.7 FEET SOUTHWEST OF THE STATION AND SET IN THE
 HV1098'TOP OF A CONCRETE POST PROJECTING 4 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1097 ***********************************************************************
 HV1097  DESIGNATION -  DARCY RM 3
 HV1097  PID         -  HV1097
 HV1097  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1097  COUNTRY     -  US
 HV1097  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1097
 HV1097                         *CURRENT SURVEY CONTROL
 HV1097  ______________________________________________________________________
 HV1097* NAD 83(1986) POSITION- 38 51 21.50   (N) 076 51 06.37   (W)   HD_HELD1
 HV1097* NAVD 88 ORTHO HEIGHT -    85.72  (meters)      281.2   (feet) RESET
 HV1097  ______________________________________________________________________
 HV1097  GEOID HEIGHT    -        -32.530 (meters)                     GEOID18
 HV1097  VERT ORDER      -  THIRD
 HV1097
 HV1097.The horizontal coordinates were determined by differentially corrected
 HV1097.hand held GPS observations or other comparable positioning techniques
 HV1097.and have an estimated accuracy of +/- 3 meters.
 HV1097
 HV1097.The orthometric height was computed from unverified reset data.
 HV1097
 HV1097.No vertical observational check was made to the station.
 HV1097
 HV1097.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1097.GEOID18 height accuracy estimate available here.
 HV1097
 HV1097.Click photographs - Photos may exist for this station.
 HV1097
 HV1097;                    North         East    Units  Estimated Accuracy
 HV1097;SPC MD       -   132,028.3     412,866.0     MT  (+/- 3 meters HH1 GPS) 
 HV1097
 HV1097_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3932102423(NAD 83)
 HV1097
 HV1097                          SUPERSEDED SURVEY CONTROL
 HV1097
 HV1097  NGVD 29 (??/??/??)   85.96   (m)          282.0    (f) RESET       3  
 HV1097
 HV1097.Superseded values are not recommended for survey control.
 HV1097
 HV1097.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1097.See file dsdata.pdf to determine how the superseded data were derived.
 HV1097
 HV1097_MARKER: DR = REFERENCE MARK DISK
 HV1097_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1097_STAMPING: DARCY NO 3 1963
 HV1097_MARK LOGO: CGS
 HV1097_PROJECTION: FLUSH
 HV1097_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1097+STABILITY: SURFACE MOTION
 HV1097
 HV1097  HISTORY     - Date     Condition        Report By
 HV1097  HISTORY     - 1963     MONUMENTED       MDSRC
 HV1097
 HV1097                          STATION DESCRIPTION
 HV1097
 HV1097'DESCRIBED BY MD STATE ROADS COMM 1963
 HV1097'2.4 MI NE FROM FORESTVILLE.
 HV1097'ABOUT 1.2 MILES NORTH ALONG THE FORESTVILLE ROAD FROM THE
 HV1097'INTERSECTION OF STATE HIGHWAY 4 AT FORESTVILLE, THENCE 1.2
 HV1097'MILES EAST ALONG DARCY ROAD TO THE CAPITOL BELTWAY AND THE
 HV1097'STATION ON THE RIGHT, 68.0 FEET SOUTH OF THE CENTERLINE OF
 HV1097'DARCY ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8928 ***********************************************************************
 HV8928  CBN         -  This is a Cooperative Base Network Control Station.
 HV8928  DESIGNATION -  DARES
 HV8928  PID         -  HV8928
 HV8928  STATE/COUNTY-  MD/CALVERT
 HV8928  COUNTRY     -  US
 HV8928  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV8928
 HV8928                         *CURRENT SURVEY CONTROL
 HV8928  ______________________________________________________________________
 HV8928* NAD 83(2011) POSITION- 38 32 51.93240(N) 076 35 24.39467(W)   ADJUSTED
 HV8928* NAD 83(2011) ELLIP HT-     6.536 (meters)        (06/27/12)   ADJUSTED
 HV8928* NAD 83(2011) EPOCH   -  2010.00
 HV8928* NAVD 88 ORTHO HEIGHT -    40.349 (meters)      132.38  (feet) ADJUSTED
 HV8928  ______________________________________________________________________
 HV8928  GEOID HEIGHT    -        -33.822 (meters)                     GEOID18
 HV8928  NAD 83(2011) X  -  1,158,366.743 (meters)                     COMP
 HV8928  NAD 83(2011) Y  - -4,858,594.248 (meters)                     COMP
 HV8928  NAD 83(2011) Z  -  3,953,181.132 (meters)                     COMP
 HV8928  LAPLACE CORR    -         -4.84  (seconds)                    DEFLEC18
 HV8928  DYNAMIC HEIGHT  -         40.325 (meters)      132.30  (feet) COMP
 HV8928  MODELED GRAVITY -    980,030.6   (mgal)                       NAVD 88
 HV8928
 HV8928  VERT ORDER      -  SECOND    CLASS I
 HV8928
 HV8928  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8928  Standards:
 HV8928         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8928            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8928  -------------------------------------------------------------------
 HV8928  NETWORK    0.64   1.41           0.28   0.24   0.72      0.04812713
 HV8928  -------------------------------------------------------------------
 HV8928  Click here for local accuracies and other accuracy information.
 HV8928
 HV8928.The horizontal coordinates were established by GPS observations
 HV8928.and adjusted by the National Geodetic Survey in June 2012.
 HV8928
 HV8928.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8928.been affixed to the stable North American tectonic plate. See 
 HV8928.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8928
 HV8928.The horizontal coordinates are valid at the epoch date displayed above
 HV8928.which is a decimal equivalence of Year/Month/Day.
 HV8928
 HV8928.The orthometric height was determined by differential leveling and
 HV8928.adjusted by the NATIONAL GEODETIC SURVEY
 HV8928.in August 1994.
 HV8928
 HV8928.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8928.GEOID18 height accuracy estimate available here.
 HV8928
 HV8928.Click photographs - Photos may exist for this station.
 HV8928
 HV8928.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8928
 HV8928.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8928
 HV8928.The ellipsoidal height was determined by GPS observations
 HV8928.and is referenced to NAD 83.
 HV8928
 HV8928.The dynamic height is computed by dividing the NAVD 88
 HV8928.geopotential number by the normal gravity value computed on the
 HV8928.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8928.degrees latitude (g = 980.6199 gals.).
 HV8928
 HV8928.The modeled gravity was interpolated from observed gravity values.
 HV8928
 HV8928. The following values were computed from the NAD 83(2011) position.
 HV8928
 HV8928;                    North         East     Units Scale Factor Converg.
 HV8928;SPC MD       -    97,884.931   435,730.918   MT  0.99996614   +0 15 26.1
 HV8928;SPC MD       -   321,144.14  1,429,560.52   sFT  0.99996614   +0 15 26.1
 HV8928;UTM  18      - 4,267,791.256   361,433.410   MT  0.99983645   -0 59 27.8
 HV8928
 HV8928!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8928!SPC MD       -   0.99999897  x   0.99996614  =   0.99996511
 HV8928!UTM  18      -   0.99999897  x   0.99983645  =   0.99983542
 HV8928
 HV8928_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6143367791(NAD 83)
 HV8928
 HV8928                          SUPERSEDED SURVEY CONTROL
 HV8928
 HV8928  NAD 83(2007)-  38 32 51.93267(N)    076 35 24.39542(W) AD(2002.00) 0
 HV8928  ELLIP H (02/10/07)    6.540  (m)                       GP(2002.00)    
 HV8928  ELLIP H (02/12/02)    6.561  (m)                       GP(       ) 4 1
 HV8928  ELLIP H (12/03/93)    6.570  (m)                       GP(       ) 4 1
 HV8928  NAD 83(1991)-  38 32 51.93273(N)    076 35 24.39585(W) AD(       ) B
 HV8928  ELLIP H (10/23/91)    6.577  (m)                       GP(       ) 4 1
 HV8928  NAVD 88              40.35   (m)          132.4    (f) LEVELING    3  
 HV8928  NGVD 29              40.59   (m)          133.2    (f) LEVELING    3  
 HV8928  NGVD 29              40.60   (m)          133.2    (f) LEVELING    3  
 HV8928
 HV8928.Superseded values are not recommended for survey control.
 HV8928
 HV8928.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8928.See file dsdata.pdf to determine how the superseded data were derived.
 HV8928
 HV8928_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8928_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8928_STAMPING: DARES 1990
 HV8928_MARK LOGO: NGS
 HV8928_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8928_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8928+STABILITY: SURFACE MOTION
 HV8928_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8928+SATELLITE: SATELLITE OBSERVATIONS - January 04, 2012
 HV8928
 HV8928  HISTORY     - Date     Condition        Report By
 HV8928  HISTORY     - 1990     MONUMENTED       NGS
 HV8928  HISTORY     - 19901207 GOOD             NGS
 HV8928  HISTORY     - 19910128 GOOD
 HV8928  HISTORY     - 19930511 GOOD             NOS
 HV8928  HISTORY     - 19990813 GOOD             GEOMET
 HV8928  HISTORY     - 20000405 GOOD             MDSHA
 HV8928  HISTORY     - 20120104 GOOD             JMTMD
 HV8928
 HV8928                          STATION DESCRIPTION
 HV8928
 HV8928'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8928'THE STATION IS LOCATED ABOUT 1.12 KM (0.70 MI) NORTHWEST OF PRINCE
 HV8928'FREDERICK, 16.96 KM (10.54 MI) EAST OF HUGHESVILLE AND 6.4 KM
 HV8928'(4.0 MI) WEST SOUTHWEST OF DARES BEACH ON THE GROUNDS OF CALVERT
 HV8928'MIDDLE SCOOL.  OWNERSHIP--CALVERT COUNTY DEPARTMENT OF EDUCATION
 HV8928'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 2,4 AND
 HV8928'STATE HIGHWAY 263 (PLUM POINT ROAD), GO SOUTH ON STATE HIGHWAY 2/4
 HV8928'FOR 1.69 KM (1.05 MI) TO THE STATION ON THE LEFT, EAST OF THE
 HV8928'NORTHBOUND LANE OF THE HIGHWAY.
 HV8928'THE STATION DISK IS SET IN THE TOP OF A 0.23 M (0.75 FT) ROUND
 HV8928'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT
 HV8928'IS 51.97 M (170.50 FT) SOUTH OF THE SOUTHWEST CORNER OF CALVERT
 HV8928'MIDDLE SCHOOL, 37.03 M (121.49 FT) SOUTH SOUTHWEST OF THE EAST END OF
 HV8928'A CHAIN LINK FENCE, 22.86 M (75.00 FT) NORTHWEST OF THE NORTHERN MOST
 HV8928'OF TWO GOAL POSTS, 103.33 M (339.01 FT) NORTH OF THE CENTERLINE OF
 HV8928'STATE HIGHWAY 402 (DARES BEACH ROAD), 51.05 M (167.49 FT) NORTHEAST
 HV8928'OF A SANITARY SEWER MANHOLE, 24.38 M (79.99 FT) EAST OF THE
 HV8928'CENTERLINE OF THE NORTHBOUND LANE OF STATE HIGHWAY 2/4 AND 12.65 M
 HV8928'(41.50 FT) EAST OF A CHAIN LINK FENCE.
 HV8928
 HV8928                          STATION RECOVERY (1990)
 HV8928
 HV8928'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV8928'STATION IS LOCATED ABOUT 1.1 KM (0.7 MI) NORTHWEST OF PRINCE
 HV8928'FREDERICK, ALONG STATE HIGHWAYS 2 AND 4, ON THE GROUNDS OF THE
 HV8928'CALVERT MIDDLE SCHOOL, ON THE LOWER LEVEL FIELD ON THE SOUTH SIDE OF
 HV8928'THE BUILDING, NEAR THE WEST FOOTBALL GOAL POST.  OWNERSHIP--CALVERT
 HV8928'COUNTY BOARD OF EDUCATION.  CONTACT OFFICE OF BILL TRABNER
 HV8928'(301-535-1700) AT THE BOARD SO SECURITY CAN BE NOTIFIED.
 HV8928'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 2, 4 AND 231 AT PRINCE
 HV8928'FREDERICK, GO NORTH ON HIGHWAYS 2 AND 4 FOR 1.12 KM (0.70 MI) TO THE
 HV8928'JUNCTION OF STATE HIGHWAY 402 ON THE RIGHT.  TURN RIGHT, EAST, FOR
 HV8928'0.12 KM (0.07 MI) TO THE SOUTHEAST CORNER OF A FOOTBALL FIELD ON THE
 HV8928'LEFT.  TURN LEFT, NORTH, FOR 30 M (98.4 FT) TO TOP OF LOW BANK.  TURN
 HV8928'LEFT, WEST, THEN NORTH AROUND FIELD EDGE FOR 0.16 KM (0.10 MI) TO THE
 HV8928'STATION.  NOTE, IF GROUNDS ARE WET, GO NORTH ON HIGHWAYS 2 AND 4 FROM
 HV8928'HIGHWAY 402 FOR 0.10 KM (0.06 MI) TO THE STATION ON THE RIGHT, ACROSS
 HV8928'FENCE.  (CAN RUN ANT. CABLE THROUGH FENCE, CARRY EQUIPMENT AROUND
 HV8928'NORTH END OF FENCE, OR PARK AT SCHOOL BUILDING AND PACK EVERYTHING).
 HV8928'STATION MARK IS SET IN THE TOP OF A 15-CM ROUND CONCRETE POST FLUSH
 HV8928'WITH THE GROUND.  IT IS 52.2 M (171.3 FT) (SLOPE) SOUTH-SOUTHWEST OF
 HV8928'THE SOUTHWEST CORNER OF THE SCHOOL, 12.8 M (42.0 FT) EAST OF A
 HV8928'FIBERGLASS WITNESS POST IN A FENCE LINE, 37.3 M (122.4 FT) (SLOPE)
 HV8928'SOUTH-SOUTHWEST OF THE EAST END OF THE FENCE AT THE SCHOOL, AND 22.8 M
 HV8928'(74.8 FT) NORTHWEST OF THE NORTH END OF THE GOAL POST.
 HV8928'DESCRIBED BY G.R.HEID.
 HV8928
 HV8928                          STATION RECOVERY (1991)
 HV8928
 HV8928'RECOVERED 1991
 HV8928'RECOVERED IN GOOD CONDITION.
 HV8928
 HV8928                          STATION RECOVERY (1993)
 HV8928
 HV8928'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1993
 HV8928'RECOVERED IN GOOD CONDITION.
 HV8928
 HV8928                          STATION RECOVERY (1999)
 HV8928
 HV8928'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (DR)
 HV8928'RECOVERED AS DESCRIBED.
 HV8928
 HV8928                          STATION RECOVERY (2000)
 HV8928
 HV8928'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV8928'RECOVERED AS DESCRIBED.
 HV8928
 HV8928                          STATION RECOVERY (2012)
 HV8928
 HV8928'RECOVERY NOTE BY JMT ENGINEERING 2012 (EAS)
 HV8928'USED AS A RTKN(KEYNET) CHECK
 HV8928'N -0.01  E + 0.06  Z -0.18
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0945 ***********************************************************************
 HV0945  DESIGNATION -  DARES 2
 HV0945  PID         -  HV0945
 HV0945  STATE/COUNTY-  MD/CALVERT
 HV0945  COUNTRY     -  US
 HV0945  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0945
 HV0945                         *CURRENT SURVEY CONTROL
 HV0945  ______________________________________________________________________
 HV0945* NAD 83(1986) POSITION- 38 32 55.     (N) 076 35 28.     (W)   SCALED
 HV0945* NAVD 88 ORTHO HEIGHT -    44.266 (meters)      145.23  (feet) ADJUSTED
 HV0945  ______________________________________________________________________
 HV0945  GEOID HEIGHT    -        -33.818 (meters)                     GEOID18
 HV0945  DYNAMIC HEIGHT  -         44.240 (meters)      145.14  (feet) COMP
 HV0945  MODELED GRAVITY -    980,030.8   (mgal)                       NAVD 88
 HV0945
 HV0945  VERT ORDER      -  FIRST     CLASS II
 HV0945
 HV0945.The horizontal coordinates were scaled from a map and have
 HV0945.an estimated accuracy of +/- 6 seconds.
 HV0945
 HV0945.The orthometric height was determined by differential leveling and
 HV0945.adjusted by the NATIONAL GEODETIC SURVEY
 HV0945.in June 1991.
 HV0945
 HV0945.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0945.GEOID18 height accuracy estimate available here.
 HV0945
 HV0945.Click photographs - Photos may exist for this station.
 HV0945
 HV0945.The dynamic height is computed by dividing the NAVD 88
 HV0945.geopotential number by the normal gravity value computed on the
 HV0945.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0945.degrees latitude (g = 980.6199 gals.).
 HV0945
 HV0945.The modeled gravity was interpolated from observed gravity values.
 HV0945
 HV0945;                    North         East    Units  Estimated Accuracy
 HV0945;SPC MD       -    97,980.      435,640.      MT  (+/- 180 meters Scaled)
 HV0945
 HV0945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH613678(NAD 83)
 HV0945
 HV0945                          SUPERSEDED SURVEY CONTROL
 HV0945
 HV0945  NGVD 29 (11/26/84)   44.511  (m)          146.03   (f) ADJUSTED    1 2
 HV0945
 HV0945.Superseded values are not recommended for survey control.
 HV0945
 HV0945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0945.See file dsdata.pdf to determine how the superseded data were derived.
 HV0945
 HV0945_MARKER: DD = SURVEY DISK
 HV0945_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0945_STAMPING: DARES 2 1970
 HV0945_MARK LOGO: MDBCSM
 HV0945_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0945+STABILITY: SURFACE MOTION
 HV0945
 HV0945  HISTORY     - Date     Condition        Report By
 HV0945  HISTORY     - 1970     MONUMENTED       MDBCSM
 HV0945  HISTORY     - 1972     GOOD             NGS
 HV0945  HISTORY     - 19910115 GOOD             NGS
 HV0945
 HV0945                          STATION DESCRIPTION
 HV0945
 HV0945'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV0945'0.8 MI NW FROM PRINCE FREDERICK.
 HV0945'ABOUT 0.55 MILE NORTHWEST ALONG STATE HIGHWAY 765 FROM THE
 HV0945'COURTHOUSE AT PRINCE FREDERICK, THENCE 0.3 MILE NORTHWEST ALONG
 HV0945'STATE HIGHWAY 2 AND 4, AT THE CALVERT COUNTY JUNIOR HIGH SCHOOL,
 HV0945'266 FEET NORTH OF THE FLAGPOLE, 165 FEET NORTHWEST OF THE WEST
 HV0945'CORNER OF THE 2-STORY PART OF THE SCHOOL BUILDING, 112 FEET
 HV0945'NORTHEAST OF THE CENTER LINE OF THE NORTHBOUND LANE OF THE
 HV0945'HIGHWAY, 38 FEET NORTHWEST OF THE NORTHWEST CURB OF DRIVEWAY TO
 HV0945'SCHOOL, ABOUT LEVEL WITH THE HIGHWAY AND SET IN THE TOP OF A
 HV0945'CONCRETE POST FLUSH WITH THE GROUND.  NOTE-- MARK MAY BE REACHED
 HV0945'BY GOING 0.85 MILE NORTH ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0945'INTERSECTION OF STATE HIGHWAY 231 AT PRINCE FREDERICK.
 HV0945
 HV0945                          STATION RECOVERY (1991)
 HV0945
 HV0945'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV0945'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5939 ***********************************************************************
 HV5939  DESIGNATION -  DAVID
 HV5939  PID         -  HV5939
 HV5939  STATE/COUNTY-  MD/DORCHESTER
 HV5939  COUNTRY     -  US
 HV5939  USGS QUAD   -  CHURCH CREEK (2016)
 HV5939
 HV5939                         *CURRENT SURVEY CONTROL
 HV5939  ______________________________________________________________________
 HV5939* NAD 83(1991) POSITION- 38 33 11.81165(N) 076 12 21.70170(W)   ADJUSTED
 HV5939* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5939  ______________________________________________________________________
 HV5939  GEOID HEIGHT    -        -34.786 (meters)                     GEOID18
 HV5939  LAPLACE CORR    -         -5.10  (seconds)                    DEFLEC18
 HV5939  HORZ ORDER      -  THIRD
 HV5939
 HV5939.The horizontal coordinates were established by classical geodetic methods
 HV5939.and adjusted by the National Geodetic Survey in January 1992.
 HV5939
 HV5939.The orthometric height was scaled from a topographic map.
 HV5939
 HV5939.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5939.GEOID18 height accuracy estimate available here.
 HV5939
 HV5939.Click photographs - Photos may exist for this station.
 HV5939
 HV5939.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5939
 HV5939. The following values were computed from the NAD 83(1991) position.
 HV5939
 HV5939;                    North         East     Units Scale Factor Converg.
 HV5939;SPC MD       -    98,718.633   469,206.047   MT  0.99996560   +0 29 54.0
 HV5939;SPC MD       -   323,879.38  1,539,386.84   sFT  0.99996560   +0 29 54.0
 HV5939;UTM  18      - 4,267,894.961   394,912.666   MT  0.99973599   -0 45 06.2
 HV5939
 HV5939!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5939!SPC MD       -   1.00000534  x   0.99996560  =   0.99997094
 HV5939!UTM  18      -   1.00000534  x   0.99973599  =   0.99974133
 HV5939
 HV5939:                Primary Azimuth Mark                     Grid Az
 HV5939:SPC MD       -  TOWN                                     226 54 27.3
 HV5939:UTM  18      -  TOWN                                     228 09 27.5
 HV5939
 HV5939_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9491267894(NAD 83)
 HV5939
 HV5939|---------------------------------------------------------------------|
 HV5939| PID    Reference Object                     Distance      Geod. Az  |
 HV5939|                                                           dddmmss.s |
 HV5939| CX2682 DAVID RM                             15.240 METERS 17702     |
 HV5939| HV5891 TOWN                                APPROX. 1.0 KM 2272421.3 |
 HV5939|---------------------------------------------------------------------|
 HV5939
 HV5939                          SUPERSEDED SURVEY CONTROL
 HV5939
 HV5939  NAD 83(1986)-  38 33 11.80919(N)    076 12 21.71725(W) AD(       ) 3
 HV5939  NAD 27      -  38 33 11.40100(N)    076 12 22.90500(W) AD(       ) 3
 HV5939  USSD        -  38 33 11.80200(N)    076 12 22.71000(W) AD(       ) 3
 HV5939
 HV5939.Superseded values are not recommended for survey control.
 HV5939
 HV5939.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5939.See file dsdata.pdf to determine how the superseded data were derived.
 HV5939
 HV5939
 HV5939  HISTORY     - Date     Condition        Report By
 HV5939  HISTORY     - 1901     MONUMENTED       CGS
 HV5939  HISTORY     - 1910     GOOD             CGS
 HV5939  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5939
 HV5939                          STATION DESCRIPTION
 HV5939
 HV5939'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV5939'ON THE SOUTHERN SHORE OF UPPER LITTLE CHOPTANK RIVER, ABOUT 5/8
 HV5939'MILE NE OF TOWN POINT AND 3/8 MILE SE OF LEE POINT, ON A MARSH
 HV5939'POINT ABOUT LEVEL WITH HIGH WATER, 3 YARDS W OF SHORE, 3 YARDS E
 HV5939'OF SHORE, 3 YARDS S OF EXTREME END OF POINT, AND 100 YARDS N OF
 HV5939'PINE WOODS.  STATION MARK IS NAIL IN 3-INCH PINE STUB WITH TOP
 HV5939'FLUSH WITH SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A HOLE
 HV5939'IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5939'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5939'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5939'COUNTER-SUNK IN TOP OF POST.  IT IS 15.24 METERS (50.0 FEET) FROM
 HV5939'STATION S 2 DEG 59 MIN E. OTHER DISTANCES AND BEARINGS ARE AS
 HV5939'FOLLOWS--TANGENT OF BUTTER POT POINT, 1-3/4 MILES, S 59 DEG 42
 HV5939'MIN W.  NEAR PEAK OF BARN, 1-1/2 MILES, S 80 DEG 1 MIN W.  CENTER
 HV5939'CHIMNEY OF HOUSE, 1-3/8 MILES, S 82 DEG 10 MIN W.  NEAR PEAK OF
 HV5939'BARN, 1 MILE, N 82 DEG 39 MIN W.  CHIMNEY ON NEAR END OF HOUSE, 2
 HV5939'MILES, N 48 DEG 41 MIN W.  LEFT END OF BARN ROOF, 5/8 MILE, N 15
 HV5939'DEG 22 MIN E.  NEAR PEAK OF BARN, 2 MILES, N 71 DEG 6 MIN E.
 HV5939
 HV5939                          STATION RECOVERY (1961)
 HV5939
 HV5939'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5939'STATION WAS MARKED BY A PINE STUB.  A SEARCH OF THE AREA FAILED TO
 HV5939'LOCATE EITHER THE STATION OR THE REFERENCE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4869 ***********************************************************************
 HV4869  DESIGNATION -  DAVID TAYLOR MODEL BASIN TANK
 HV4869  PID         -  HV4869
 HV4869  STATE/COUNTY-  MD/MONTGOMERY
 HV4869  COUNTRY     -  US
 HV4869  USGS QUAD   -  FALLS CHURCH (2019)
 HV4869
 HV4869                         *CURRENT SURVEY CONTROL
 HV4869  ______________________________________________________________________
 HV4869* NAD 83(1993) POSITION- 38 58 33.84325(N) 077 11 34.99786(W)   ADJUSTED
 HV4869  ______________________________________________________________________
 HV4869  GEOID HEIGHT    -        -31.776 (meters)                     GEOID18
 HV4869  LAPLACE CORR    -         -1.93  (seconds)                    DEFLEC18
 HV4869  HORZ ORDER      -  THIRD
 HV4869
 HV4869.The horizontal coordinates were established by classical geodetic methods
 HV4869.and adjusted by the National Geodetic Survey in November 1994.
 HV4869
 HV4869.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4869.GEOID18 height accuracy estimate available here.
 HV4869
 HV4869.Click photographs - Photos may exist for this station.
 HV4869
 HV4869.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4869
 HV4869. The following values were computed from the NAD 83(1993) position.
 HV4869
 HV4869;                    North         East     Units Scale Factor Converg.
 HV4869;SPC MD       -   145,367.160   383,271.537   MT  0.99995137   -0 07 16.2
 HV4869;SPC MD       -   476,925.42  1,257,450.03   sFT  0.99995137   -0 07 16.2
 HV4869;UTM  18      - 4,316,408.261   310,025.782   MT  1.00004442   -1 22 47.4
 HV4869
 HV4869_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1002516408(NAD 83)
 HV4869
 HV4869                          SUPERSEDED SURVEY CONTROL
 HV4869
 HV4869  NAD 83(1991)-  38 58 33.84271(N)    077 11 34.99952(W) AD(       ) 3
 HV4869  NAD 83(1986)-  38 58 33.84259(N)    077 11 35.00893(W) AD(       ) 3
 HV4869  NAD 27      -  38 58 33.44653(N)    077 11 36.07266(W) AD(       ) 3
 HV4869
 HV4869.Superseded values are not recommended for survey control.
 HV4869
 HV4869.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4869.See file dsdata.pdf to determine how the superseded data were derived.
 HV4869
 HV4869_MARKER: 53 = ELEVATED TANK
 HV4869_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV4869+SATELLITE: SATELLITE OBSERVATIONS - November 06, 2000
 HV4869
 HV4869  HISTORY     - Date     Condition        Report By
 HV4869  HISTORY     - 1958     FIRST OBSERVED   CGS
 HV4869  HISTORY     - 19950621 GOOD             USPSQD
 HV4869  HISTORY     - 20001106 GOOD             USPSQD
 HV4869
 HV4869                          STATION DESCRIPTION
 HV4869
 HV4869'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV4869'THE STATION IS NEAR THE WEST END AND NEAR GATE NUMBER ONE,
 HV4869'(MAIN ENTRANCE GATE), OF DAVID TAYLOR MODEL BASIN.  EXPERIMENTAL
 HV4869'STATION.
 HV4869'
 HV4869'THE STATION IS PAINTED SILVER, APPROXIMATELY 150 FEET HIGH.
 HV4869'
 HV4869'THE POINT INTERSECTED WAS THE BALL FINIAL.
 HV4869
 HV4869                          STATION RECOVERY (1995)
 HV4869
 HV4869'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4869'RECOVERED IN GOOD CONDITION.
 HV4869
 HV4869                          STATION RECOVERY (2000)
 HV4869
 HV4869'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV4869'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5719 ***********************************************************************
 JV5719  DESIGNATION -  DAVIDSON USE 1916
 JV5719  PID         -  JV5719
 JV5719  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5719  COUNTRY     -  US
 JV5719  USGS QUAD   -  CURTIS BAY (2016)
 JV5719
 JV5719                         *CURRENT SURVEY CONTROL
 JV5719  ______________________________________________________________________
 JV5719* NAD 83(1991) POSITION- 39 12 38.67100(N) 076 34 17.06036(W)   ADJUSTED
 JV5719* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV5719  ______________________________________________________________________
 JV5719  GEOID HEIGHT    -        -32.924 (meters)                     GEOID18
 JV5719  LAPLACE CORR    -         -4.03  (seconds)                    DEFLEC18
 JV5719  HORZ ORDER      -  THIRD
 JV5719
 JV5719.The horizontal coordinates were established by classical geodetic methods
 JV5719.and adjusted by the National Geodetic Survey in January 1992.
 JV5719
 JV5719.The orthometric height was scaled from a topographic map.
 JV5719
 JV5719.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5719.GEOID18 height accuracy estimate available here.
 JV5719
 JV5719.Click photographs - Photos may exist for this station.
 JV5719
 JV5719.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5719
 JV5719. The following values were computed from the NAD 83(1991) position.
 JV5719
 JV5719;                    North         East     Units Scale Factor Converg.
 JV5719;SPC MD       -   171,488.171   437,015.837   MT  0.99996689   +0 16 08.4
 JV5719;SPC MD       -   562,624.11  1,433,776.13   sFT  0.99996689   +0 16 08.4
 JV5719;UTM  18      - 4,341,339.561   364,330.343   MT  0.99982664   -0 59 36.8
 JV5719
 JV5719!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5719!SPC MD       -   1.00000379  x   0.99996689  =   0.99997068
 JV5719!UTM  18      -   1.00000379  x   0.99982664  =   0.99983043
 JV5719
 JV5719:                Primary Azimuth Mark                     Grid Az
 JV5719:SPC MD       -  CURTIS                                   265 43 32.3
 JV5719:UTM  18      -  CURTIS                                   266 59 17.5
 JV5719
 JV5719_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6433041339(NAD 83)
 JV5719
 JV5719|---------------------------------------------------------------------|
 JV5719| PID    Reference Object                     Distance      Geod. Az  |
 JV5719|                                                           dddmmss.s |
 JV5719| JV5701 CURTIS                              APPROX. 0.9 KM 2655940.7 |
 JV5719|---------------------------------------------------------------------|
 JV5719
 JV5719                          SUPERSEDED SURVEY CONTROL
 JV5719
 JV5719  NAD 83(1986)-  39 12 38.66728(N)    076 34 17.06984(W) AD(       ) 3
 JV5719  NAD 27      -  39 12 38.27800(N)    076 34 18.19600(W) AD(       ) 3
 JV5719  USSD        -  39 12 38.64000(N)    076 34 18.03600(W) AD(       ) 3
 JV5719
 JV5719.Superseded values are not recommended for survey control.
 JV5719
 JV5719.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5719.See file dsdata.pdf to determine how the superseded data were derived.
 JV5719
 JV5719
 JV5719  HISTORY     - Date     Condition        Report By
 JV5719  HISTORY     - 1916     MONUMENTED       CGS
 JV5719  HISTORY     - 1924     GOOD             CGS
 JV5719
 JV5719                          STATION DESCRIPTION
 JV5719
 JV5719'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5719'AT THE E SIDE OF CURTIS CREEK AND NEAR THE NW CORNER OF A SUMMER
 JV5719'COTTAGE.  THE STATION IS MARKED BY A CONCRETE MONUMENT CENTERED
 JV5719'BY A STANDARD U.S.E. BRONZE MARKER.  IT IS 3.05 METERS (10.0 FEET)
 JV5719'S FROM A TREE, 3.87 METERS (12.7 FEET) SW FROM ANOTHER TREE,
 JV5719'1.92 METERS (6.3 FEET) W OF THE NW CORNER OF THE PIAZZA OF THE
 JV5719'COTTAGE, AND 9.54 METERS (31.3 FEET) FROM THE SW CORNER OF THE
 JV5719'PIAZZA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8897 ***********************************************************************
 HV8897  DESIGNATION -  DAVIDSONVILLE RESET
 HV8897  PID         -  HV8897
 HV8897  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV8897  COUNTRY     -  US
 HV8897  USGS QUAD   -  BOWIE (2016)
 HV8897
 HV8897                         *CURRENT SURVEY CONTROL
 HV8897  ______________________________________________________________________
 HV8897* NAD 83(1991) POSITION- 38 55 23.78175(N) 076 37 40.54902(W)   ADJUSTED
 HV8897* NAVD 88 ORTHO HEIGHT -    55.17  (meters)      181.0   (feet) RESET
 HV8897  ______________________________________________________________________
 HV8897  GEOID HEIGHT    -        -33.097 (meters)                     GEOID18
 HV8897  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 HV8897  HORZ ORDER      -  THIRD
 HV8897  VERT ORDER      -  THIRD
 HV8897
 HV8897.The horizontal coordinates were established by classical geodetic methods
 HV8897.and adjusted by the National Geodetic Survey in January 1992.
 HV8897
 HV8897.The orthometric height was computed from unverified reset data.
 HV8897
 HV8897.No vertical observational check was made to the station.
 HV8897
 HV8897.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8897.GEOID18 height accuracy estimate available here.
 HV8897
 HV8897.Click photographs - Photos may exist for this station.
 HV8897
 HV8897.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8897
 HV8897. The following values were computed from the NAD 83(1991) position.
 HV8897
 HV8897;                    North         East     Units Scale Factor Converg.
 HV8897;SPC MD       -   139,554.515   432,264.146   MT  0.99995019   +0 14 00.7
 HV8897;SPC MD       -   457,855.10  1,418,186.62   sFT  0.99995019   +0 14 00.7
 HV8897;UTM  18      - 4,309,521.907   358,878.501   MT  0.99984523   -1 01 22.7
 HV8897
 HV8897!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8897!SPC MD       -   0.99999654  x   0.99995019  =   0.99994673
 HV8897!UTM  18      -   0.99999654  x   0.99984523  =   0.99984177
 HV8897
 HV8897:                Primary Azimuth Mark                     Grid Az
 HV8897:SPC MD       -  DAVIDSONVILLE RM 2 AZIMUTH RESET         223 53 10.8
 HV8897:UTM  18      -  DAVIDSONVILLE RM 2 AZIMUTH RESET         225 08 34.2
 HV8897
 HV8897_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5887809521(NAD 83)
 HV8897
 HV8897|---------------------------------------------------------------------|
 HV8897| PID    Reference Object                     Distance      Geod. Az  |
 HV8897|                                                           dddmmss.s |
 HV8897| HV6396 ANNAPOLIS NAVAL ACAD NW MAST        APPROX.16.8 KM 0643316.4 |
 HV8897| HV6397 ANNAPOLIS NAVAL ACAD SE MAST        APPROX.16.8 KM 0665757.1 |
 HV8897| HV4232 DAVIDSONVILLE RM 1                   30.053 METERS 14411     |
 HV8897| HV8898 DAVIDSONVILLE RM 4                   26.730 METERS 15115     |
 HV8897| HV1144 DAVIDSONVILLE RM 2 AZIMUTH RESET                   2240711.5 |
 HV8897| HV1145 DAVIDSONVILLE RM 3                   38.944 METERS 25651     |
 HV8897|---------------------------------------------------------------------|
 HV8897
 HV8897                          SUPERSEDED SURVEY CONTROL
 HV8897
 HV8897  NAD 83(1986)-  38 55 23.77859(N)    076 37 40.56049(W) AD(       ) 3
 HV8897  NAD 27      -  38 55 23.37470(N)    076 37 41.68815(W) AD(       ) 1
 HV8897  NGVD 29 (11/18/05)   55.42   (m)          181.8    (f) RESET       3  
 HV8897  NGVD 29              55.42   (m)          181.8    (f) LEVELING    3  
 HV8897
 HV8897.Superseded values are not recommended for survey control.
 HV8897
 HV8897.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8897.See file dsdata.pdf to determine how the superseded data were derived.
 HV8897
 HV8897_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8897_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8897_STAMPING: DAVIDSONVILLE 1933 1980
 HV8897_MARK LOGO: NGS
 HV8897_PROJECTION: FLUSH
 HV8897_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8897+STABILITY: SURFACE MOTION
 HV8897_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8897+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2005
 HV8897
 HV8897  HISTORY     - Date     Condition        Report By
 HV8897  HISTORY     - 1980     MONUMENTED       NGS
 HV8897  HISTORY     - 1980     GOOD             NGS
 HV8897  HISTORY     - 20020209 GOOD             USPSQD
 HV8897  HISTORY     - 20051215 GOOD             USPSQD
 HV8897
 HV8897                          STATION DESCRIPTION
 HV8897
 HV8897'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 HV8897'IN DAVIDSONVILLE.
 HV8897'AT THE INTERSECTION OF STATE HIGHWAYS 214 AND 424 IN THE APPROXIMATE
 HV8897'CENTER OF DAVIDSONVILLE, 152 FEET EAST OF THE CENTER OF STATE HIGHWAY
 HV8897'424, 61 FEET NORTH OF THE CENTER OF STATE HIGHWAY 214, 127 FEET
 HV8897'EAST-SOUTHEAST OF A POWERLINE POLE NUMBERED 468669, 30 FEET NORTHWEST
 HV8897'OF A POWERLINE POLE NUMBERED 468668 AND 13 FEET NORTH-NORTHEAST OF
 HV8897'THE MOST WESTERLY ONE OF TWO 8-INCH BLUE SPRUCE TREES.
 HV8897'THE MARK IS 4.6 METERS  N FROM  A WITNESS POST
 HV8897'THE MARK IS 1.5 M ABOVE HIGHWAY 424.
 HV8897
 HV8897                          STATION RECOVERY (1980)
 HV8897
 HV8897'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980
 HV8897'THE MARK IS LOCATED ABOUT 37.1 KM (23.05 MI) EAST OF THE DISTRICT OF
 HV8897'COLUMBIA, 13.67 KM (8.50 MI) SOUTHWEST OF ANNAPOLIS  AND NEAR THE
 HV8897'CENTER OF DAVIDSONVILLE.  OWNERSHIP--DR. L.W. LOTT.
 HV8897'TO REACH FROM THE POST OFFICE IN DAVIDSONVILLE, GO EAST ON STATE
 HV8897'HIGHWAY 214 FOR 0.3 KM (0.20 MI) TO THE MARK.
 HV8897'THE DISK IS SET IN THE TOP OF THE 0.30 M (1.0 FT) CONCRETE POST WHICH
 HV8897'IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 46.33 M (152.0 FT)
 HV8897'EAST OF THE CENTER OF STATE HIGHWAY 424, 38.71 M (127.0 FT)
 HV8897'EAST-SOUTHEAST OF A POWERLINE POLE NUMBERED 468669, 18.59 M (61.0 FT)
 HV8897'NORTH OF THE CENTER OF STATE HIGHWAY 214, 9.14 M (30.0 FT) NORTHWEST
 HV8897'OF A POWERLINE POLE NUMBERED 468668 AND 3.96 M (13.0 FT)
 HV8897'NORTH-NORTHEAST OF THE MOST WESTERLY ONE OF TWO 0.25 M (0.7 FT) BLUE
 HV8897'SPRUCE TREES.
 HV8897
 HV8897                          STATION RECOVERY (2002)
 HV8897
 HV8897'RECOVERY NOTE BY US POWER SQUADRON 2002 (WAY)
 HV8897'RECOVERED IN GOOD CONDITION.
 HV8897
 HV8897                          STATION RECOVERY (2005)
 HV8897
 HV8897'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV8897'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1144 ***********************************************************************
 HV1144  DESIGNATION -  DAVIDSONVILLE RM 2 AZIMUTH RESET
 HV1144  PID         -  HV1144
 HV1144  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1144  COUNTRY     -  US
 HV1144  USGS QUAD   -  BOWIE (2016)
 HV1144
 HV1144                         *CURRENT SURVEY CONTROL
 HV1144  ______________________________________________________________________
 HV1144* NAD 83(1986) POSITION- 38 55 20.     (N) 076 37 53.     (W)   SCALED
 HV1144* NAVD 88 ORTHO HEIGHT -    56.249 (meters)      184.54  (feet) ADJUSTED
 HV1144  ______________________________________________________________________
 HV1144  GEOID HEIGHT    -        -33.089 (meters)                     GEOID18
 HV1144  DYNAMIC HEIGHT  -         56.218 (meters)      184.44  (feet) COMP
 HV1144  MODELED GRAVITY -    980,069.3   (mgal)                       NAVD 88
 HV1144
 HV1144  VERT ORDER      -  SECOND    CLASS 0
 HV1144
 HV1144.The horizontal coordinates were scaled from a map and have
 HV1144.an estimated accuracy of +/- 6 seconds.
 HV1144
 HV1144.The orthometric height was determined by differential leveling and
 HV1144.adjusted by the NATIONAL GEODETIC SURVEY
 HV1144.in June 1991.
 HV1144
 HV1144.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1144.GEOID18 height accuracy estimate available here.
 HV1144
 HV1144.Click photographs - Photos may exist for this station.
 HV1144
 HV1144.The dynamic height is computed by dividing the NAVD 88
 HV1144.geopotential number by the normal gravity value computed on the
 HV1144.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1144.degrees latitude (g = 980.6199 gals.).
 HV1144
 HV1144.The modeled gravity was interpolated from observed gravity values.
 HV1144
 HV1144;                    North         East    Units  Estimated Accuracy
 HV1144;SPC MD       -   139,440.      431,970.      MT  (+/- 180 meters Scaled)
 HV1144
 HV1144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ585094(NAD 83)
 HV1144
 HV1144                          SUPERSEDED SURVEY CONTROL
 HV1144
 HV1144  NGVD 29 (11/26/84)   56.500  (m)          185.37   (f) ADJUSTED    2 0
 HV1144
 HV1144.Superseded values are not recommended for survey control.
 HV1144
 HV1144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1144.See file dsdata.pdf to determine how the superseded data were derived.
 HV1144
 HV1144_MARKER: DR = REFERENCE MARK DISK
 HV1144_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1144_STAMPING: DAVIDSONVILLE NO 2 1933
 HV1144_MARK LOGO: CGS
 HV1144_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1144+STABILITY: SURFACE MOTION
 HV1144_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1144+SATELLITE: SATELLITE OBSERVATIONS - August 01, 1980
 HV1144
 HV1144  HISTORY     - Date     Condition        Report By
 HV1144  HISTORY     - 1933     MONUMENTED       CGS
 HV1144  HISTORY     - 1942     GOOD             CGS
 HV1144  HISTORY     - 1943     GOOD             CGS
 HV1144  HISTORY     - 19800801 GOOD             NGS
 HV1144  HISTORY     - 20020209 MARK NOT FOUND   USPSQD
 HV1144
 HV1144                          STATION DESCRIPTION
 HV1144
 HV1144'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1144'AT DAVIDSONVILLE.
 HV1144'AT DAVIDSONVILLE, ANNE ARUNDEL COUNTY, ABOUT 0.2 MILE WEST OF THE
 HV1144'CROSSROADS, IN THE EXTREME NORTHWEST CORNER OF THE HOLY FAMILY
 HV1144'CATHOLIC CHURCH YARD, 78 FEET NORTHWEST OF THE NORTHWEST CORNER
 HV1144'OF THE CHURCH, ABOUT 150 FEET NORTH OF THE CENTER LINE OF STATE
 HV1144'HIGHWAY 214, AND 1-1/2 FEET SOUTHEAST OF A CORNER FENCE POST.  A
 HV1144'STANDARD REFERENCE-MARK DISK, STAMPED DAVIDSONVILLE NO 2 1933 AND
 HV1144'SET IN THE TOP OF A CONCRETE POST PROJECTING ABOUT 4 INCHES ABOVE
 HV1144'GROUND.
 HV1144
 HV1144                          STATION RECOVERY (1943)
 HV1144
 HV1144'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 HV1144'RECOVERED IN GOOD CONDITION.
 HV1144
 HV1144                          STATION RECOVERY (1980)
 HV1144
 HV1144'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980
 HV1144'THIS POINT IS LOCATED ABOUT 37.1 KM (23.05 MI) EAST OF THE DISTRICT OF
 HV1144'COLUMBIA, 13.67 KM (8.50 MI) SOUTHWEST OF ANNAPOLIS, NEAR THE CENTER
 HV1144'OF DAVIDSONVILLE AND JUST NORTH OF THE DAVIDSONVILLE POST OFFICE.
 HV1144'OWNERSHIP--DAVIDSONVILLE HOLY FAMILY CHURCH.
 HV1144'TO REACH FROM THE POST OFFICE IN DAVIDSONVILLE, GO NORTHWEST ACROSS
 HV1144'COUNTRY FOR ABOUT 100 M (328.1 FT) TO THE MARK ATOP A LOW HILL BEHIND
 HV1144'THE CHURCH AND NEAR A PROPERTY LINE.
 HV1144'THE DISK IS SET IN THE TOP OF THE 0.25 M (0.8 FT) MONUMENT WHICH IS
 HV1144'FLUSH WITH THE SURFACE OF THE GROUND. IT IS 23.87 M (78.3 FT)
 HV1144'NORTHWEST OF THE NORTHWEST CORNER OF THE DAVIDSONVILLE HOLY FAMILY
 HV1144'CHURCH, 9.6 M (31.5 FT) WEST OF THE CENTER OF A PRIVATE DRIVE LEADING
 HV1144'NORTH, 4.27 M (14.0 FT) SOUTH OF THE SOUTH END OF A BOARD FENCE AND
 HV1144'1.07 M (3.5 FT) NORTH-NORTHWEST OF A 0.15 M (0.5 FT) SASSAFRAS TREE.
 HV1144
 HV1144                          STATION RECOVERY (2002)
 HV1144
 HV1144'RECOVERY NOTE BY US POWER SQUADRON 2002 (WAY)
 HV1144'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1145 ***********************************************************************
 HV1145  DESIGNATION -  DAVIDSONVILLE RM 3
 HV1145  PID         -  HV1145
 HV1145  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1145  COUNTRY     -  US
 HV1145  USGS QUAD   -  BOWIE (2016)
 HV1145
 HV1145                         *CURRENT SURVEY CONTROL
 HV1145  ______________________________________________________________________
 HV1145* NAD 83(1991) POSITION- 38 55 23.49448(N) 076 37 42.12334(W)   NO CHECK
 HV1145* NAVD 88 ORTHO HEIGHT -    54.544 (meters)      178.95  (feet) ADJUSTED
 HV1145  ______________________________________________________________________
 HV1145  GEOID HEIGHT    -        -33.096 (meters)                     GEOID18
 HV1145  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 HV1145  DYNAMIC HEIGHT  -         54.514 (meters)      178.85  (feet) COMP
 HV1145  MODELED GRAVITY -    980,069.2   (mgal)                       NAVD 88
 HV1145
 HV1145  HORZ ORDER      -  THIRD
 HV1145  VERT ORDER      -  SECOND    CLASS 0
 HV1145
 HV1145.The horizontal coordinates were established by classical geodetic methods
 HV1145.and adjusted by the National Geodetic Survey in January 1992.
 HV1145
 HV1145.No horizontal observational check was made to the station.
 HV1145
 HV1145.The orthometric height was determined by differential leveling and
 HV1145.adjusted by the NATIONAL GEODETIC SURVEY
 HV1145.in June 1991.
 HV1145
 HV1145.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1145.GEOID18 height accuracy estimate available here.
 HV1145
 HV1145.Click photographs - Photos may exist for this station.
 HV1145
 HV1145.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1145
 HV1145.The dynamic height is computed by dividing the NAVD 88
 HV1145.geopotential number by the normal gravity value computed on the
 HV1145.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1145.degrees latitude (g = 980.6199 gals.).
 HV1145
 HV1145.The modeled gravity was interpolated from observed gravity values.
 HV1145
 HV1145. The following values were computed from the NAD 83(1991) position.
 HV1145
 HV1145;                    North         East     Units Scale Factor Converg.
 HV1145;SPC MD       -   139,545.502   432,226.261   MT  0.99995019   +0 13 59.7
 HV1145;SPC MD       -   457,825.53  1,418,062.32   sFT  0.99995019   +0 13 59.7
 HV1145;UTM  18      - 4,309,513.729   358,840.432   MT  0.99984536   -1 01 23.7
 HV1145
 HV1145!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1145!SPC MD       -   0.99999663  x   0.99995019  =   0.99994683
 HV1145!UTM  18      -   0.99999663  x   0.99984536  =   0.99984200
 HV1145
 HV1145_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5884009513(NAD 83)
 HV1145
 HV1145                          SUPERSEDED SURVEY CONTROL
 HV1145
 HV1145  NAD 83(1986)-  38 55 23.49139(N)    076 37 42.13441(W) AD(       ) 3
 HV1145  NGVD 29              54.79   (m)          179.8    (f) LEVELING    3  
 HV1145  NGVD 29 (11/26/84)   54.795  (m)          179.77   (f) ADJUSTED    2 0
 HV1145
 HV1145.Superseded values are not recommended for survey control.
 HV1145
 HV1145.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1145.See file dsdata.pdf to determine how the superseded data were derived.
 HV1145
 HV1145_MARKER: DR = REFERENCE MARK DISK
 HV1145_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1145_STAMPING: DAVIDSONVILLE NO 3 1933
 HV1145_MARK LOGO: CGS
 HV1145_PROJECTION: PROJECTING 8 CENTIMETERS
 HV1145_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1145+STABILITY: SURFACE MOTION
 HV1145_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1145+SATELLITE: SATELLITE OBSERVATIONS - July 09, 2018
 HV1145
 HV1145  HISTORY     - Date     Condition        Report By
 HV1145  HISTORY     - 1933     MONUMENTED       CGS
 HV1145  HISTORY     - 1942     GOOD             CGS
 HV1145  HISTORY     - 19800801 GOOD             NGS
 HV1145  HISTORY     - 20020209 MARK NOT FOUND   USPSQD
 HV1145  HISTORY     - 20180709 GOOD             NGS
 HV1145
 HV1145                          STATION DESCRIPTION
 HV1145
 HV1145'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1145'AT DAVIDSONVILLE.
 HV1145'AT DAVIDSONVILLE, ANNE ARUNDEL COUNTY, 110.5 FEET NORTH OF THE
 HV1145'CENTER OF THE CROSSROADS, 28 FEET EAST OF THE CENTER LINE OF
 HV1145'STATE HIGHWAY 424, 128 FEET WEST OF TRIANGULATION STATION
 HV1145'DAVIDSONVILLE, DESCRIBED IN LINE 3, BELOW, AND IN LINE WITH THE
 HV1145'WEST FENCE ROW.  A STANDARD REFERENCE-MARK DISK, STAMPED
 HV1145'DAVIDSONVILLE NO 3 1933 AND SET IN THE TOP OF A CONCRETE POST
 HV1145'PROJECTING ABOUT 6 INCHES ABOVE GROUND.
 HV1145
 HV1145                          STATION RECOVERY (1980)
 HV1145
 HV1145'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980
 HV1145'THIS POINT IS LOCATED ABOUT 37.1 KM (23.05 MI) EAST OF THE DISTRICT OF
 HV1145'COLUMBIA, 13.67 KM (8.50 MI) SOUTHWEST OF ANNAPOLIS, JUST EAST OF THE
 HV1145'INTERSECTION OF STATE HIGHWAYS 214 AND 424 AND NEAR THE CENTER OF
 HV1145'DAVIDSONVILLE.  OWNERSHIP--DR. L.W. LOTT.
 HV1145'TO REACH FROM THE POST OFFICE AT DAVIDSONVILLE, GO EAST ON STATE
 HV1145'HIGHWAY 214 FOR 0.35 KM (0.20 MI) TO THE MARK ON THE LEFT.
 HV1145'THE DISK IS SET IN THE TOP OF THE 0.3 M (1.0 FT) POST WHICH PROJECTS
 HV1145'0.04 M (0.1 FT) ABOVE THE SURFACE OF THE GROUND.  IT IS 7.62 M
 HV1145'(25.0 FT) EAST OF THE CENTER OF STATE HIGHWAY 424, 29.26 M (96.0 FT)
 HV1145'NORTH OF THE MOST SOUTHWESRT CORNER OF DR. LOTTS YARD, 1.93 M
 HV1145'(6.3 FT) NORTH OF A POWERLINE POLE NUMBERED 469669 AND 0.3 M (1.0 FT)
 HV1145'EAST OF A NORTH-SOUTH WOODED FENCE LINE.
 HV1145'THIS MARK IS ABOUT 0.6 M (2.0 FT) LOWER THAN THE STATION MARK.
 HV1145
 HV1145                          STATION RECOVERY (2002)
 HV1145
 HV1145'RECOVERY NOTE BY US POWER SQUADRON 2002 (WAY)
 HV1145'MARK NOT FOUND.
 HV1145
 HV1145                          STATION RECOVERY (2018)
 HV1145
 HV1145'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2018 (RWA)
 HV1145'IT IS 82 FT (25.0 M) NORTHEAST OF OF THE SOUTHWEST END OF A SPLIT RAIL
 HV1145'FENCE, 18 FT (5.5 M) SOUTH OF STATE ROUTE 214, 8 FT (2.4 M) EAST OF
 HV1145'WESTERN GUY WIRE, 4 FT (1.2 M) WEST OF UTILITY POLE 475149 AND SET IN
 HV1145'THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8898 ***********************************************************************
 HV8898  DESIGNATION -  DAVIDSONVILLE RM 4
 HV8898  PID         -  HV8898
 HV8898  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV8898  COUNTRY     -  US
 HV8898  USGS QUAD   -  BOWIE (2016)
 HV8898
 HV8898                         *CURRENT SURVEY CONTROL
 HV8898  ______________________________________________________________________
 HV8898* NAD 83(1991) POSITION- 38 55 23.02177(N) 076 37 40.01539(W)   NO CHECK
 HV8898* NAVD 88 ORTHO HEIGHT -    53.58  (meters)      175.8   (feet) RESET
 HV8898  ______________________________________________________________________
 HV8898  GEOID HEIGHT    -        -33.098 (meters)                     GEOID18
 HV8898  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 HV8898  HORZ ORDER      -  THIRD
 HV8898  VERT ORDER      -  THIRD
 HV8898
 HV8898.The horizontal coordinates were established by classical geodetic methods
 HV8898.and adjusted by the National Geodetic Survey in January 1992.
 HV8898
 HV8898.No horizontal observational check was made to the station.
 HV8898
 HV8898.The orthometric height was computed from unverified reset data.
 HV8898
 HV8898.No vertical observational check was made to the station.
 HV8898
 HV8898.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8898.GEOID18 height accuracy estimate available here.
 HV8898
 HV8898.Click photographs - Photos may exist for this station.
 HV8898
 HV8898.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8898
 HV8898. The following values were computed from the NAD 83(1991) position.
 HV8898
 HV8898;                    North         East     Units Scale Factor Converg.
 HV8898;SPC MD       -   139,531.133   432,277.096   MT  0.99995019   +0 14 01.0
 HV8898;SPC MD       -   457,778.39  1,418,229.11   sFT  0.99995019   +0 14 01.0
 HV8898;UTM  18      - 4,309,498.250   358,890.934   MT  0.99984519   -1 01 22.3
 HV8898
 HV8898!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8898!SPC MD       -   0.99999679  x   0.99995019  =   0.99994698
 HV8898!UTM  18      -   0.99999679  x   0.99984519  =   0.99984198
 HV8898
 HV8898_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5889009498(NAD 83)
 HV8898
 HV8898                          SUPERSEDED SURVEY CONTROL
 HV8898
 HV8898  NAD 83(1986)-  38 55 23.01860(N)    076 37 40.02685(W) AD(       ) 3
 HV8898  NGVD 29 (11/18/05)   53.83   (m)          176.6    (f) RESET       3  
 HV8898  NGVD 29              53.83   (m)          176.6    (f) LEVELING    3  
 HV8898
 HV8898.Superseded values are not recommended for survey control.
 HV8898
 HV8898.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8898.See file dsdata.pdf to determine how the superseded data were derived.
 HV8898
 HV8898_MARKER: DR = REFERENCE MARK DISK
 HV8898_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8898_STAMPING: DAVIDSONVILLE 1933 NO 4 1980
 HV8898_MARK LOGO: NGS
 HV8898_PROJECTION: FLUSH
 HV8898_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8898_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8898+STABILITY: SURFACE MOTION
 HV8898_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8898+SATELLITE: SATELLITE OBSERVATIONS - June 09, 2018
 HV8898
 HV8898  HISTORY     - Date     Condition        Report By
 HV8898  HISTORY     - 1980     MONUMENTED       NGS
 HV8898  HISTORY     - 20020209 GOOD             USPSQD
 HV8898  HISTORY     - 20050720 GOOD             USPSQD
 HV8898  HISTORY     - 20180609 GOOD             NGS
 HV8898
 HV8898                          STATION DESCRIPTION
 HV8898
 HV8898'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 HV8898'IN DAVIDSONVILLE.
 HV8898'AT THE INTERSECTION OF STATE HIGHWAYS 214 AND 424 IN DAVIDSONVILLE,
 HV8898'172 FEET EAST OF THE CENTER OF STATE HIGHWAY 424, 61 FEET SOUTHWEST
 HV8898'OF A POWERLINE POLE NUMBERED 468668, 21 FEET SOUTH OF THE CENTER OF
 HV8898'STATE HIGHWAY 214 AND 3 FEET NORTHWEST OF A POWERLINE POLE NUMBERED
 HV8898'475149.
 HV8898'THE MARK IS 0.6 M ABOVE HIGHWAY 214.
 HV8898
 HV8898                          STATION RECOVERY (2002)
 HV8898
 HV8898'RECOVERY NOTE BY US POWER SQUADRON 2002 (WAY)
 HV8898'RECOVERED IN GOOD CONDITION.
 HV8898
 HV8898                          STATION RECOVERY (2005)
 HV8898
 HV8898'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV8898'RECOVERED IN GOOD CONDITION.
 HV8898
 HV8898                          STATION RECOVERY (2018)
 HV8898
 HV8898'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2018 (RWA)
 HV8898'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4744 ***********************************************************************
 JV4744  DESIGNATION -  DAVIS
 JV4744  PID         -  JV4744
 JV4744  STATE/COUNTY-  MD/WASHINGTON
 JV4744  COUNTRY     -  US
 JV4744  USGS QUAD   -  HEDGESVILLE (2016)
 JV4744
 JV4744                         *CURRENT SURVEY CONTROL
 JV4744  ______________________________________________________________________
 JV4744* NAD 83(1991) POSITION- 39 37 28.67009(N) 077 59 11.28659(W)   ADJUSTED
 JV4744* NAVD 88 ORTHO HEIGHT -   183.8   (meters)      603.    (feet) VERTCON3
 JV4744  ______________________________________________________________________
 JV4744  GEOID HEIGHT    -        -34.261 (meters)                     GEOID18
 JV4744  LAPLACE CORR    -         -1.45  (seconds)                    DEFLEC18
 JV4744  HORZ ORDER      -  FIRST
 JV4744
 JV4744.The horizontal coordinates were established by classical geodetic methods
 JV4744.and adjusted by the National Geodetic Survey in January 1992.
 JV4744
 JV4744.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4744.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4744
 JV4744.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4744.GEOID18 height accuracy estimate available here.
 JV4744
 JV4744.Click photographs - Photos may exist for this station.
 JV4744
 JV4744.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4744
 JV4744. The following values were computed from the NAD 83(1991) position.
 JV4744
 JV4744;                    North         East     Units Scale Factor Converg.
 JV4744;SPC MD       -   217,810.112   315,300.875   MT  1.00003522   -0 37 08.9
 JV4744;SPC MD       -   714,598.68  1,034,449.62   sFT  1.00003522   -0 37 08.9
 JV4744;SPC WV N     -   125,947.918   729,937.362   MT  0.99994074   +0 57 55.0
 JV4744;SPC WV N     -   413,214.13  2,394,802.83   sFT  0.99994074   +0 57 55.0
 JV4744;UTM  18      - 4,390,358.950   243,663.690   MT  1.00040906   -1 54 20.4
 JV4744;UTM  17      - 4,390,436.603   758,659.599   MT  1.00042379   +1 55 22.7
 JV4744
 JV4744!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4744!SPC MD       -   0.99997654  x   1.00003522  =   1.00001176
 JV4744!SPC WV N     -   0.99997654  x   0.99994074  =   0.99991728
 JV4744!UTM  18      -   0.99997654  x   1.00040906  =   1.00038559
 JV4744!UTM  17      -   0.99997654  x   1.00042379  =   1.00040032
 JV4744
 JV4744:                Primary Azimuth Mark                     Grid Az
 JV4744:SPC MD       -  DAVIS AZ MK                              138 02 16.3
 JV4744:SPC WV N     -  DAVIS AZ MK                              136 27 12.4
 JV4744:UTM  18      -  DAVIS AZ MK                              139 19 27.8
 JV4744:UTM  17      -  DAVIS AZ MK                              135 29 44.7
 JV4744
 JV4744_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ4366390358(NAD 83)
 JV4744
 JV4744|---------------------------------------------------------------------|
 JV4744| PID    Reference Object                     Distance      Geod. Az  |
 JV4744|                                                           dddmmss.s |
 JV4744| CJ9624 DAVIS RM 1                           23.296 METERS 10238     |
 JV4744| CJ9623 DAVIS AZ MK                                        1372507.4 |
 JV4744| CJ9625 DAVIS RM 2                           22.379 METERS 20000     |
 JV4744|---------------------------------------------------------------------|
 JV4744
 JV4744                          SUPERSEDED SURVEY CONTROL
 JV4744
 JV4744  NAD 83(1986)-  39 37 28.67020(N)    077 59 11.29508(W) AD(       ) 1
 JV4744  NAD 27      -  39 37 28.32432(N)    077 59 12.29642(W) AD(       ) 1
 JV4744  NGVD 29 (07/19/86)  184.0    (m)          604.     (f) VERT ANG       
 JV4744
 JV4744.Superseded values are not recommended for survey control.
 JV4744
 JV4744.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4744.See file dsdata.pdf to determine how the superseded data were derived.
 JV4744
 JV4744_MARKER: DD = SURVEY DISK
 JV4744_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4744_STAMPING: DAVIS 1968
 JV4744_MARK LOGO: USACE
 JV4744_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4744+SATELLITE: SATELLITE OBSERVATIONS - April 27, 2008
 JV4744
 JV4744  HISTORY     - Date     Condition        Report By
 JV4744  HISTORY     - 1968     MONUMENTED       AMS
 JV4744  HISTORY     - 20080427 GOOD             GEOCAC
 JV4744
 JV4744                          STATION DESCRIPTION
 JV4744
 JV4744'DESCRIBED BY US ARMY MAP SERVICE (NOW DMA) 1968 (WOK)
 JV4744'THE STATION IS LOCATED ON A LOW RIDGE WHICH IS APPROXIMATELY 15
 JV4744'MILES WEST-SOUTHWEST OF HAGERSTOWN, 3-1/2 MILES SOUTHWEST OF CLEAR
 JV4744'SPRINGS, 5 MILES NORTH OF HEDGESVILLE, 2 MILES SOUTHEAST OF THE
 JV4744'SMALL COMMUNITY OF BIG POOL, 1-1/2 MILES NORTH OF THE POTOMAC
 JV4744'RIVER AND ON LAND WHICH IS OWNED AND OCCUPIED BY A MRS. N. A.
 JV4744'DAVIS.
 JV4744'
 JV4744'THE STATION IS REACHED FROM THE POST OFFICE IN BIG POOL,
 JV4744'MARYLAND.  GO SOUTH FOR 0.05 MILE TO THE JUNCTION OF STATE HIGHWAY
 JV4744'56.  TURN LEFT AND GO SOUTHEAST AND EAST ON HIGHWAY 56 FOR 1.85
 JV4744'MILES TO A FARM DRIVEWAY ON LEFT.  TURN LEFT AND FOLLOW THE
 JV4744'DRIVEWAY FOR 0.15 MILE TO THE FARM HOME OF MRS. DAVIS.  CONTINUE
 JV4744'STRAIGHT AHEAD ON DRIVE FOR ABOUT 150 FEET TO A LARGE BARN ON
 JV4744'THE RIGHT AND STATION MARK ON THE LEFT.  THE AZIMUTH MARK IS
 JV4744'REACHED FROM THE JUNCTION OF HIGHWAY 56 AND THE FARM DRIVE BY
 JV4744'GOING SOUTHEASTERLY ON HIGHWAY 56 FOR 0.2 MILE TO THE MARK ON
 JV4744'THE LEFT.
 JV4744'
 JV4744'THE STATION MARK IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED
 JV4744'DAVIS 1968 ARMY MAP SERVICE SET IN THE TOP OF A SQUARE CONCRETE
 JV4744'MONUMENT WHICH IS FLUSH WITH THE GROUND.  THE MARK IS 33 FEET
 JV4744'NORTHWEST OF THE APPROXIMATE CENTERLINE OF THE FARM DRIVE AND 29
 JV4744'FEET NORTHEAST OF THE NORTH CORNER OF A SHED.
 JV4744'
 JV4744'REFERENCE MARK 1 IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED
 JV4744'DAVIS NO 1 1968 ARMY MAP SERVICE, CEMENTED IN A DRILL HOLE IN THE
 JV4744'TOP OF THE CONCRETE FOUNDATION FOR THE LARGE BARN.  THE MARK IS 1
 JV4744'FOOT NORTHWEST OF THE NORTHWEST EDGE OF THE BARN, 17.3 FEET
 JV4744'SOUTHWEST OF THE NORTH CORNER OF THE BARN AND 16 FEET SOUTHEAST
 JV4744'OF THE APPROXIMATE CENTERLINE OF THE FARM DRIVE.
 JV4744'
 JV4744'REFERENCE MARK 2 IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED
 JV4744'DAVIS NO 2 1968 ARMY MAP SERVICE, SET IN THE TOP OF A SQUARE
 JV4744'CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  THE MARK IS 16.0
 JV4744'FEET SOUTHEAST OF THE SOUTHEAST EDGE OF A FARM BUILDING AND 2.0
 JV4744'FEET NORTHEAST OF A POWERLINE POLE.
 JV4744'
 JV4744'THE AZIMUTH MARK IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED
 JV4744'DAVIS AZ. MK. 1968 ARMY MAP SERVICE PROJECTING 0.2 FOOT ABOVE THE
 JV4744'SURFACE OF THE GROUND.  THE MARK IS 60 FEET SOUTHEAST OF THE
 JV4744'INTERSECTING CENTERLINES OF STATE HIGHWAY 56 AND A ROAD LEADING
 JV4744'NORTHEAST, 20 FEET NORTHEAST OF THE CENTERLINE OF STATE HIGHWAY
 JV4744'56 AND 1.5 FEET NORTHWEST OF A POWERLINE POLE.
 JV4744'
 JV4744'A TRAVERSE TIE WAS MADE TO STATION FREDERICK RM 1.  THE DISTANCE
 JV4744'WAS DETERMINED BY GEODIMETER.
 JV4744'
 JV4744'HEIGHT OF LIGHT ABOVE STATION MARK 30.3 METERS.
 JV4744
 JV4744                          STATION RECOVERY (2008)
 JV4744
 JV4744'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JV4744'STATION AND RM 2 RECOVERED IN GOOD CONDITION.  THE STATION IS 8.2
 JV4744'METERS NW OF THE CENTERLINE OF THE CURRENT TRACK ROAD.  OMIT THE SHED
 JV4744'MEASUREMENT.
 JV4744'
 JV4744'RM 1 WAS DESTROYED WHEN REMAINS OF THE BARN WERE REMOVED (A NEW
 JV4744'STRUCTURE IS IN ITS PLACE).
 JV4744'
 JV4744'RM 2 IS 2.0 FEET NE OF THE MOST EASTERLY OF 2 POLES WHICH ARE
 JV4744'SIDE-BY-SIDE.
 JV4744'
 JV4744'THE AZIMUTH MARK WAS NOT LOCATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5041 ***********************************************************************
 JV5041  DESIGNATION -  DAVIS
 JV5041  PID         -  JV5041
 JV5041  STATE/COUNTY-  MD/KENT
 JV5041  COUNTRY     -  US
 JV5041  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5041
 JV5041                         *CURRENT SURVEY CONTROL
 JV5041  ______________________________________________________________________
 JV5041* NAD 83(1991) POSITION- 39 07 15.90673(N) 076 10 19.24546(W)   ADJUSTED
 JV5041* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5041  ______________________________________________________________________
 JV5041  GEOID HEIGHT    -        -33.459 (meters)                     GEOID18
 JV5041  LAPLACE CORR    -         -2.00  (seconds)                    DEFLEC18
 JV5041  HORZ ORDER      -  THIRD
 JV5041
 JV5041.The horizontal coordinates were established by classical geodetic methods
 JV5041.and adjusted by the National Geodetic Survey in January 1992.
 JV5041
 JV5041.The orthometric height was scaled from a topographic map.
 JV5041
 JV5041.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5041.GEOID18 height accuracy estimate available here.
 JV5041
 JV5041.Click photographs - Photos may exist for this station.
 JV5041
 JV5041.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5041
 JV5041. The following values were computed from the NAD 83(1991) position.
 JV5041
 JV5041;                    North         East     Units Scale Factor Converg.
 JV5041;SPC MD       -   161,772.783   471,599.240   MT  0.99995899   +0 31 10.8
 JV5041;SPC MD       -   530,749.54  1,547,238.51   sFT  0.99995899   +0 31 10.8
 JV5041;UTM  18      - 4,330,867.545   398,685.117   MT  0.99972639   -0 44 22.4
 JV5041
 JV5041!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5041!SPC MD       -   1.00000529  x   0.99995899  =   0.99996428
 JV5041!UTM  18      -   1.00000529  x   0.99972639  =   0.99973168
 JV5041
 JV5041:                Primary Azimuth Mark                     Grid Az
 JV5041:SPC MD       -  ISLE                                     018 24 31.2
 JV5041:UTM  18      -  ISLE                                     019 40 04.4
 JV5041
 JV5041_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9868530867(NAD 83)
 JV5041
 JV5041|---------------------------------------------------------------------|
 JV5041| PID    Reference Object                     Distance      Geod. Az  |
 JV5041|                                                           dddmmss.s |
 JV5041| JV5103 ISLE                                APPROX. 0.8 KM 0185542.0 |
 JV5041|---------------------------------------------------------------------|
 JV5041
 JV5041                          SUPERSEDED SURVEY CONTROL
 JV5041
 JV5041  NAD 83(1986)-  39 07 15.90119(N)    076 10 19.25706(W) AD(       ) 3
 JV5041  NAD 27      -  39 07 15.50500(N)    076 10 20.42700(W) AD(       ) 3
 JV5041  USSD        -  39 07 15.90500(N)    076 10 20.25200(W) AD(       ) 3
 JV5041
 JV5041.Superseded values are not recommended for survey control.
 JV5041
 JV5041.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5041.See file dsdata.pdf to determine how the superseded data were derived.
 JV5041
 JV5041_MARKER: H = DRILL HOLE
 JV5041_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5041_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5041+STABILITY: SURFACE MOTION
 JV5041
 JV5041  HISTORY     - Date     Condition        Report By
 JV5041  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5041  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5041
 JV5041                          STATION DESCRIPTION
 JV5041
 JV5041'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5041'STATION IS ON THE WESTERN SHORE OF LANGFORD CREEK, ON POINT ABOUT
 JV5041'1-7/8 MILES N OF CHESTER RIVER, 1/8 MILE NE OF ENTRANCE TO DAVIS
 JV5041'CREEK, 5/8 MILE N OF DRUM POINT, AND NEARLY OPPOSITE ORCHARD POINT,
 JV5041'IN A CULTIVATED FIELD, ABOUT 10 FEET ABOVE HIGH WATER, 20 YARDS
 JV5041'NW OF SHORE, AND 10 YARDS NW OF TOP OF BANK.
 JV5041'
 JV5041'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5041'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5041'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5041'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5041'POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED
 JV5041'WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5041'
 JV5041'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5041'FOLLOWS--NAIL IN BLAZE IN 4-INCH OAK TREE, 16.50 METERS (54.1
 JV5041'FEET), S 20 DEG 40 MIN W.  CHIMNEY OF SMALL HOUSE, 1 MILE, N 25 DEG
 JV5041'59 MIN E.  S GABLE OF BARN, 1-1/4 MILES, N 53 DEG 04 MIN E. W CHIMNEY
 JV5041'OF HOUSE, 1-1/8 MILES, N 86 DEG 27 MIN E. W CHIMNEY OF HOUSE, 1
 JV5041'MILE, S 66 DEG 32 MIN E. NAIL IN BLAZE IN 15-INCH OAK TREE, 10.46
 JV5041'METERS (34.3 FEET), S 36 DEG 45 MIN E. CHIMNEY OF HOUSE, 1-1/8
 JV5041'MILES, S 23 DEG 37 MIN E.
 JV5041
 JV5041                          STATION RECOVERY (1941)
 JV5041
 JV5041'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5041'SEARCHED FOR AND NOT FOUND.  MARK IS IN CULTIVATED FIELD AND
 JV5041'REFERENCE TREES ARE GONE.  NO SIGN OF SUBSURFACE MARK WAS
 JV5041'FOUND.  RECOMMEND THAT STATION BE CONSIDERED LOST.  PRESENT
 JV5041'OWNER HAS LIVED AND CULTIVATED HERE FOR EIGHT YEARS AND HAS NOT
 JV5041'SEEN STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7206 ***********************************************************************
 JV7206  DESIGNATION -  DAVIS
 JV7206  PID         -  JV7206
 JV7206  STATE/COUNTY-  MD/WASHINGTON
 JV7206  COUNTRY     -  US
 JV7206  USGS QUAD   -  HARPERS FERRY (2016)
 JV7206
 JV7206                         *CURRENT SURVEY CONTROL
 JV7206  ______________________________________________________________________
 JV7206* NAD 83(2011) POSITION- 39 22 03.40338(N) 077 40 15.60611(W)   ADJUSTED
 JV7206* NAD 83(2011) ELLIP HT-   136.923 (meters)        (06/27/12)   ADJUSTED
 JV7206* NAD 83(2011) EPOCH   -  2010.00
 JV7206* NAVD 88 ORTHO HEIGHT -   170.3   (meters)      559.    (feet) GPS OBS
 JV7206  ______________________________________________________________________
 JV7206  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7206  GEOID HEIGHT    -        -33.650 (meters)                     GEOID93
 JV7206  GEOID HEIGHT    -        -33.322 (meters)                     GEOID18
 JV7206  NAD 83(2011) X  -  1,054,310.552 (meters)                     COMP
 JV7206  NAD 83(2011) Y  - -4,823,773.992 (meters)                     COMP
 JV7206  NAD 83(2011) Z  -  4,024,038.078 (meters)                     COMP
 JV7206  LAPLACE CORR    -          6.99  (seconds)                    DEFLEC18
 JV7206
 JV7206  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7206  Standards:
 JV7206         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7206            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7206  -------------------------------------------------------------------
 JV7206  NETWORK    1.48   1.84           0.65   0.55   0.94     -0.03851109
 JV7206  -------------------------------------------------------------------
 JV7206  Click here for local accuracies and other accuracy information.
 JV7206
 JV7206.The horizontal coordinates were established by GPS observations
 JV7206.and adjusted by the National Geodetic Survey in June 2012.
 JV7206
 JV7206.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7206.been affixed to the stable North American tectonic plate. See 
 JV7206.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7206
 JV7206.The horizontal coordinates are valid at the epoch date displayed above
 JV7206.which is a decimal equivalence of Year/Month/Day.
 JV7206
 JV7206.The orthometric height was determined by GPS observations and a
 JV7206.high-resolution geoid model.
 JV7206
 JV7206.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7206.GEOID18 height accuracy estimate available here.
 JV7206
 JV7206.Click photographs - Photos may exist for this station.
 JV7206
 JV7206.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7206
 JV7206.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7206
 JV7206.The ellipsoidal height was determined by GPS observations
 JV7206.and is referenced to NAD 83.
 JV7206
 JV7206. The following values were computed from the NAD 83(2011) position.
 JV7206
 JV7206;                    North         East     Units Scale Factor Converg.
 JV7206;SPC MD       -   189,029.250   342,176.807   MT  0.99998663   -0 25 16.1
 JV7206;SPC MD       -   620,173.46  1,122,625.07   sFT  0.99998663   -0 25 16.1
 JV7206;UTM  18      - 4,360,975.519   269,898.396   MT  1.00025195   -1 41 41.8
 JV7206
 JV7206!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7206!SPC MD       -   0.99997852  x   0.99998663  =   0.99996515
 JV7206!UTM  18      -   0.99997852  x   1.00025195  =   1.00023046
 JV7206
 JV7206_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6989860975(NAD 83)
 JV7206
 JV7206                          SUPERSEDED SURVEY CONTROL
 JV7206
 JV7206  NAD 83(2007)-  39 22 03.40358(N)    077 40 15.60677(W) AD(2002.00) 0
 JV7206  ELLIP H (02/10/07)  136.947  (m)                       GP(2002.00)    
 JV7206  ELLIP H (08/30/02)  136.962  (m)                       GP(       ) 4 2
 JV7206  NAD 83(1991)-  39 22 03.40387(N)    077 40 15.60638(W) AD(       ) 1
 JV7206  ELLIP H (02/09/94)  136.876  (m)                       GP(       ) 4 1
 JV7206
 JV7206.Superseded values are not recommended for survey control.
 JV7206
 JV7206.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7206.See file dsdata.pdf to determine how the superseded data were derived.
 JV7206
 JV7206_MARKER: DD = SURVEY DISK
 JV7206_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7206_STAMPING: DAVIS 1993
 JV7206_MARK LOGO: MD-021
 JV7206_PROJECTION: FLUSH
 JV7206_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7206_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7206+STABILITY: SURFACE MOTION
 JV7206_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7206+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2020
 JV7206
 JV7206  HISTORY     - Date     Condition        Report By
 JV7206  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7206  HISTORY     - 20030616 GOOD             DEWDAV
 JV7206  HISTORY     - 20081107 GOOD             MDSHA
 JV7206  HISTORY     - 20101128 GOOD             GEOCAC
 JV7206  HISTORY     - 20200516 GOOD             NGS
 JV7206
 JV7206                          STATION DESCRIPTION
 JV7206
 JV7206'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7206'FROM FREDERICK, MD, TAKE MD RTE 340 WEST TO MD RTE 67 IN WASHINGTON
 JV7206'COUNTY. GO NORTH ON RTE 67 2.5 MILES (4.0 KM) TO INTERSECTION WITH
 JV7206'YARROWSBURG ROAD. STATION IS 28 FEET (8.5 M) WEST OF THE CENTERLINE
 JV7206'OF RTE 67 AND 123 FEET (37.5 M) NORTH OF THE CENTERLINE OF
 JV7206'YARROWSBURG ROAD. STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH
 JV7206'ROUND CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7206
 JV7206                          STATION RECOVERY (2003)
 JV7206
 JV7206'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (CSW)
 JV7206'RECOVERED IN GOOD CONDITION.
 JV7206
 JV7206                          STATION RECOVERY (2008)
 JV7206
 JV7206'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DLP)
 JV7206'RECOVERED IN GOOD CONDITION.
 JV7206
 JV7206                          STATION RECOVERY (2010)
 JV7206
 JV7206'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV7206'RECOVERED IN GOOD CONDITION.
 JV7206'
 JV7206'STATION IS APPROX 2 INCHES BELOW GROUND LEVEL.
 JV7206
 JV7206                          STATION RECOVERY (2020)
 JV7206
 JV7206'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (JH)
 JV7206'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR8459 ***********************************************************************
 DR8459  DESIGNATION -  DAVIS HILL
 DR8459  PID         -  DR8459
 DR8459  STATE/COUNTY-  MD/KENT
 DR8459  COUNTRY     -  US
 DR8459  USGS QUAD   -  GALENA (2017)
 DR8459
 DR8459                         *CURRENT SURVEY CONTROL
 DR8459  ______________________________________________________________________
 DR8459* NAD 83(2011) POSITION- 39 20 04.30904(N) 075 55 20.15699(W)   ADJUSTED
 DR8459* NAD 83(2011) ELLIP HT-   -12.137 (meters)        (09/18/23)   ADJUSTED
 DR8459* NAD 83(2011) EPOCH   -  2010.00
 DR8459* NAVD 88 ORTHO HEIGHT -    21.319 (meters)       69.94  (feet) ADJUSTED
 DR8459  ______________________________________________________________________
 DR8459  GEOID HEIGHT    -        -33.484 (meters)                     GEOID18
 DR8459  NAD 83(2011) X  -  1,201,562.455 (meters)                     COMP
 DR8459  NAD 83(2011) Y  - -4,791,500.659 (meters)                     COMP
 DR8459  NAD 83(2011) Z  -  4,021,103.443 (meters)                     COMP
 DR8459  LAPLACE CORR    -         -2.55  (seconds)                    DEFLEC18
 DR8459  DYNAMIC HEIGHT  -         21.308 (meters)       69.91  (feet) COMP
 DR8459  MODELED GRAVITY -    980,112.2   (mgal)                       NAVD 88
 DR8459
 DR8459  VERT ORDER      -  FIRST     CLASS II
 DR8459
 DR8459  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR8459  Standards:
 DR8459         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR8459            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR8459  -------------------------------------------------------------------
 DR8459  NETWORK    0.53   1.25           0.23   0.20   0.64      0.03535110
 DR8459  -------------------------------------------------------------------
 DR8459  Click here for local accuracies and other accuracy information.
 DR8459
 DR8459.The horizontal coordinates were established by GPS observations
 DR8459.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR8459
 DR8459.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR8459.been affixed to the stable North American tectonic plate. See 
 DR8459.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR8459
 DR8459.The horizontal coordinates are valid at the epoch date displayed above
 DR8459.which is a decimal equivalence of Year/Month/Day.
 DR8459
 DR8459.The orthometric height was determined by differential leveling and
 DR8459.adjusted by the NATIONAL GEODETIC SURVEY
 DR8459.in January 2023.
 DR8459
 DR8459.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR8459.GEOID18 height accuracy estimate available here.
 DR8459
 DR8459.Click photographs - Photos may exist for this station.
 DR8459
 DR8459.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR8459
 DR8459.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR8459
 DR8459.The ellipsoidal height was determined by GPS observations
 DR8459.and is referenced to NAD 83.
 DR8459
 DR8459.The dynamic height is computed by dividing the NAVD 88
 DR8459.geopotential number by the normal gravity value computed on the
 DR8459.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR8459.degrees latitude (g = 980.6199 gals.).
 DR8459
 DR8459.The modeled gravity was interpolated from observed gravity values.
 DR8459
 DR8459. The following values were computed from the NAD 83(2011) position.
 DR8459
 DR8459;                    North         East     Units Scale Factor Converg.
 DR8459;SPC MD       -   185,692.463   492,915.172   MT  0.99998184   +0 40 35.1
 DR8459;SPC MD       -   609,226.02  1,617,172.53   sFT  0.99998184   +0 40 35.1
 DR8459;UTM  18      - 4,354,306.334   420,516.121   MT  0.99967779   -0 35 04.6
 DR8459
 DR8459!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR8459!SPC MD       -   1.00000190  x   0.99998184  =   0.99998374
 DR8459!UTM  18      -   1.00000190  x   0.99967779  =   0.99967969
 DR8459
 DR8459_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2051654306(NAD 83)
 DR8459
 DR8459                          SUPERSEDED SURVEY CONTROL
 DR8459
 DR8459.No superseded survey control is available for this station.
 DR8459
 DR8459_MARKER: DD = SURVEY DISK
 DR8459_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR8459_STAMPING: DAVIS HILL 2021
 DR8459_MARK LOGO: MD-029
 DR8459_PROJECTION: FLUSH
 DR8459_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR8459_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR8459+STABILITY: SURFACE MOTION
 DR8459_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR8459+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2025
 DR8459
 DR8459  HISTORY     - Date     Condition        Report By
 DR8459  HISTORY     - 20211226 MONUMENTED       MDSHA
 DR8459  HISTORY     - 20220607 GOOD             MDSHA
 DR8459  HISTORY     - 20250821 GOOD             PROFLN
 DR8459
 DR8459                          STATION DESCRIPTION
 DR8459
 DR8459'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR8459'THE MARK IS LOCATED ABOUT 11.6 MI (18.7 KM) NORTHEAST OF CHESTERTOWN,
 DR8459'5.5 MI (8.8 KM) WEST-NORTHWEST OF MASSEY, 4.4 MI (7.1 KM)
 DR8459'EAST-NORTHEAST OF KENNEDYVILLE AND 2.3 MI (3.7 KM) WEST OF GALENA.
 DR8459'
 DR8459'TO REACH THE MARK FROM THE JUNCTION OF MD 282 AND MD 213, GO SOUTH ON
 DR8459'MD 213 FOR 4.74 MI (7.63 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DR8459'WEST ON MD 213 S/W CROSS ST FOR 2.40 MI (3.86 KM) TO AN INTERSECTION.
 DR8459'TURN LEFT AND GO SOUTH-SOUTHEAST ON DAVES HILL ROAD FOR 0.03 MI (0.05
 DR8459'KM) TO THE MARK ON THE RIGHT, IN THE TOP OF A 12-IN (30 CM) ROUND
 DR8459'CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
 DR8459'
 DR8459'THE MARK IS 149.0 FT (45.4 M) SOUTHEAST OF THE CENTERLINE OF STATE
 DR8459'ROUTE 213, 131.4 FT (40.1 M) SOUTH OF A UTILITY POLE NUMBERED, 63.6 FT
 DR8459'(19.4 M) EAST OF A UTILITY POLE NUMBERED CHOPTANK 124-139, 33.9 FT
 DR8459'(10.3 M) SOUTH-SOUTHWEST OF A METAL POST WITH SIGN ADOPT A ROAD THE
 DR8459'DOVE FAMILY AND 30.5 FT (9.3 M) WEST OF THE CENTERLINE OF DAVES HILL
 DR8459'ROAD.
 DR8459
 DR8459                          STATION RECOVERY (2022)
 DR8459
 DR8459'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 DR8459'RECOVERED IN GOOD CONDITION.
 DR8459
 DR8459                          STATION RECOVERY (2025)
 DR8459
 DR8459'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR8459'THE MARK IS 119 FT (36.3 M) SOUTHERLY FROM A STOP SIGN, 30.5 FT (9.3
 DR8459'M) SOUTHWEST RADIAL TO THE CURVE FROM THE ROAD, 14 FT (4.3 M)
 DR8459'SOUTHERLY FROM THE LINE OF THREE POLES EXTENDING WESTERLY OBLIQUE TO
 DR8459'THE HIGHWAY.  IT IS 1 FT (0.3 M) LOWER THAN THE ROAD, FLUSH WITH THE
 DR8459'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR8460 ***********************************************************************
 DR8460  DESIGNATION -  DAVIS HILL AZ MK
 DR8460  PID         -  DR8460
 DR8460  STATE/COUNTY-  MD/KENT
 DR8460  COUNTRY     -  US
 DR8460  USGS QUAD   -  GALENA (2017)
 DR8460
 DR8460                         *CURRENT SURVEY CONTROL
 DR8460  ______________________________________________________________________
 DR8460* NAD 83(2011) POSITION- 39 20 04.40929(N) 075 55 06.36592(W)   ADJUSTED
 DR8460* NAD 83(2011) ELLIP HT-   -12.603 (meters)        (09/18/23)   ADJUSTED
 DR8460* NAD 83(2011) EPOCH   -  2010.00
 DR8460* NAVD 88 ORTHO HEIGHT -    20.870 (meters)       68.47  (feet) ADJUSTED
 DR8460  ______________________________________________________________________
 DR8460  GEOID HEIGHT    -        -33.489 (meters)                     GEOID18
 DR8460  NAD 83(2011) X  -  1,201,882.253 (meters)                     COMP
 DR8460  NAD 83(2011) Y  - -4,791,418.061 (meters)                     COMP
 DR8460  NAD 83(2011) Z  -  4,021,105.538 (meters)                     COMP
 DR8460  LAPLACE CORR    -         -2.52  (seconds)                    DEFLEC18
 DR8460  DYNAMIC HEIGHT  -         20.860 (meters)       68.44  (feet) COMP
 DR8460  MODELED GRAVITY -    980,112.0   (mgal)                       NAVD 88
 DR8460
 DR8460  VERT ORDER      -  FIRST     CLASS II
 DR8460
 DR8460  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR8460  Standards:
 DR8460         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR8460            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR8460  -------------------------------------------------------------------
 DR8460  NETWORK    0.53   1.29           0.23   0.20   0.66      0.03141409
 DR8460  -------------------------------------------------------------------
 DR8460  Click here for local accuracies and other accuracy information.
 DR8460
 DR8460.The horizontal coordinates were established by GPS observations
 DR8460.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR8460
 DR8460.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR8460.been affixed to the stable North American tectonic plate. See 
 DR8460.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR8460
 DR8460.The horizontal coordinates are valid at the epoch date displayed above
 DR8460.which is a decimal equivalence of Year/Month/Day.
 DR8460
 DR8460.The orthometric height was determined by differential leveling and
 DR8460.adjusted by the NATIONAL GEODETIC SURVEY
 DR8460.in January 2023.
 DR8460
 DR8460.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR8460.GEOID18 height accuracy estimate available here.
 DR8460
 DR8460.Click photographs - Photos may exist for this station.
 DR8460
 DR8460.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR8460
 DR8460.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR8460
 DR8460.The ellipsoidal height was determined by GPS observations
 DR8460.and is referenced to NAD 83.
 DR8460
 DR8460.The dynamic height is computed by dividing the NAVD 88
 DR8460.geopotential number by the normal gravity value computed on the
 DR8460.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR8460.degrees latitude (g = 980.6199 gals.).
 DR8460
 DR8460.The modeled gravity was interpolated from observed gravity values.
 DR8460
 DR8460. The following values were computed from the NAD 83(2011) position.
 DR8460
 DR8460;                    North         East     Units Scale Factor Converg.
 DR8460;SPC MD       -   185,699.460   493,245.391   MT  0.99998184   +0 40 43.8
 DR8460;SPC MD       -   609,248.98  1,618,255.92   sFT  0.99998184   +0 40 43.8
 DR8460;UTM  18      - 4,354,306.063   420,846.313   MT  0.99967714   -0 34 55.8
 DR8460
 DR8460!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR8460!SPC MD       -   1.00000198  x   0.99998184  =   0.99998382
 DR8460!UTM  18      -   1.00000198  x   0.99967714  =   0.99967912
 DR8460
 DR8460_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2084654306(NAD 83)
 DR8460
 DR8460                          SUPERSEDED SURVEY CONTROL
 DR8460
 DR8460.No superseded survey control is available for this station.
 DR8460
 DR8460_MARKER: DD = SURVEY DISK
 DR8460_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR8460_STAMPING: DAVIS HILL AZ 2021
 DR8460_MARK LOGO: MD-029
 DR8460_PROJECTION: FLUSH
 DR8460_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR8460_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR8460+STABILITY: SURFACE MOTION
 DR8460_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR8460+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2025
 DR8460
 DR8460  HISTORY     - Date     Condition        Report By
 DR8460  HISTORY     - 20211226 MONUMENTED       MDSHA
 DR8460  HISTORY     - 20220607 GOOD             MDSHA
 DR8460  HISTORY     - 20250821 GOOD             PROFLN
 DR8460
 DR8460                          STATION DESCRIPTION
 DR8460
 DR8460'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR8460'THE MARK IS LOCATED ABOUT 11.6 MI (18.7 KM) NORTHEAST OF CHESTERTOWN,
 DR8460'5.5 MI (8.8 KM) WEST-NORTHWEST OF MASSEY, 4.4 MI (7.1 KM)
 DR8460'EAST-NORTHEAST OF KENNEDYVILLE AND 2.3 MI (3.7 KM) WEST OF GALENA.
 DR8460'
 DR8460'TO REACH THE MARK FROM THE JUNCTION OF MD 282 AND MD 213, GO SOUTH ON
 DR8460'MD 213 FOR 4.74 MI (7.63 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DR8460'WEST ON MD 213 S/W CROSS ST FOR 2.40 MI (3.86 KM) TO AN INTERSECTION.
 DR8460'TURN LEFT AND GO SOUTH-SOUTHEAST ON DAVES HILL ROAD FOR 0.23 MI (0.37
 DR8460'KM) TO THE MARK ON THE RIGHT, IN THE TOP OF A 12-IN (30 CM) ROUND
 DR8460'CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
 DR8460'
 DR8460'THE MARK IS 161.8 FT (49.3 M) EAST-SOUTHEAST OF A METAL POST WITH SIGN
 DR8460'READING RESIDENTIAL TRASH AND RECYCLE CENTER, 100.5 FT (30.6 M) WEST
 DR8460'OF A TELEPHONE PEDESTAL NUMBERED VERIZON 11, 68.6 FT (20.9 M) WEST OF
 DR8460'THE CENTERLINE OF DUCK PUDDLE ROAD, 45.2 FT (13.8 M) WEST OF THE WEST
 DR8460'CORNER OF METAL GRATE FOR A STORM DRAIN INLET AND 12.1 FT (3.7 M)
 DR8460'SOUTH OF THE CENTERLINE OF DAVES HILL ROAD.
 DR8460
 DR8460                          STATION RECOVERY (2022)
 DR8460
 DR8460'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 DR8460'RECOVERED IN GOOD CONDITION.
 DR8460
 DR8460                          STATION RECOVERY (2025)
 DR8460
 DR8460'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR8460'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2592 ***********************************************************************
 HU2592  DESIGNATION -  DAVIS RESET
 HU2592  PID         -  HU2592
 HU2592  STATE/COUNTY-  MD/WORCESTER
 HU2592  COUNTRY     -  US
 HU2592  USGS QUAD   -  WHALEYVILLE (2016)
 HU2592
 HU2592                         *CURRENT SURVEY CONTROL
 HU2592  ______________________________________________________________________
 HU2592* NAD 83(1991) POSITION- 38 27 04.72983(N) 075 15 10.85951(W)   ADJUSTED
 HU2592* NAVD 88 ORTHO HEIGHT -    11.8   (meters)       39.    (feet) VERTCON3
 HU2592  ______________________________________________________________________
 HU2592  GEOID HEIGHT    -        -35.862 (meters)                     GEOID18
 HU2592  LAPLACE CORR    -         -0.36  (seconds)                    DEFLEC18
 HU2592  HORZ ORDER      -  SECOND
 HU2592
 HU2592.The horizontal coordinates were established by classical geodetic methods
 HU2592.and adjusted by the National Geodetic Survey in January 1992.
 HU2592
 HU2592.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2592.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2592
 HU2592.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2592.GEOID18 height accuracy estimate available here.
 HU2592
 HU2592.Click photographs - Photos may exist for this station.
 HU2592
 HU2592.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2592
 HU2592. The following values were computed from the NAD 83(1991) position.
 HU2592
 HU2592;                    North         East     Units Scale Factor Converg.
 HU2592;SPC MD       -    88,558.117   552,483.930   MT  0.99997712   +1 05 47.3
 HU2592;SPC MD       -   290,544.42  1,812,607.69   sFT  0.99997712   +1 05 47.3
 HU2592;UTM  18      - 4,255,921.471   477,922.637   MT  0.99960600   -0 09 26.4
 HU2592
 HU2592!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2592!SPC MD       -   1.00000378  x   0.99997712  =   0.99998090
 HU2592!UTM  18      -   1.00000378  x   0.99960600  =   0.99960978
 HU2592
 HU2592:                Primary Azimuth Mark                     Grid Az
 HU2592:SPC MD       -  DAVIS RM 3                               273 18 28.9
 HU2592:UTM  18      -  DAVIS RM 3                               274 33 42.6
 HU2592
 HU2592_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7792255921(NAD 83)
 HU2592
 HU2592|---------------------------------------------------------------------|
 HU2592| PID    Reference Object                     Distance      Geod. Az  |
 HU2592|                                                           dddmmss.s |
 HU2592| HU2586 BOUNDARY MON EW 11 DE MD RESET        8.359 METERS 00034     |
 HU2592| HU2620 DAVIS RM 2                            9.818 METERS 26340     |
 HU2592| HU2621 DAVIS RM 3                                         2742416.2 |
 HU2592| HU2619 DAVIS RM 1                            8.050 METERS 35541     |
 HU2592|---------------------------------------------------------------------|
 HU2592
 HU2592                          SUPERSEDED SURVEY CONTROL
 HU2592
 HU2592  NAD 83(1986)-  38 27 04.71503(N)    075 15 10.88308(W) AD(       ) 2
 HU2592  NAD 27      -  38 27 04.30333(N)    075 15 12.20147(W) AD(       ) 2
 HU2592  NGVD 29 (03/28/90)   12.0    (m)           39.     (f) VERT ANG       
 HU2592
 HU2592.Superseded values are not recommended for survey control.
 HU2592
 HU2592.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2592.See file dsdata.pdf to determine how the superseded data were derived.
 HU2592
 HU2592_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2592_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2592_STAMPING: DAVIS 1974 1986
 HU2592_MARK LOGO: NGS
 HU2592_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2592_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2592+STABILITY: SURFACE MOTION
 HU2592
 HU2592  HISTORY     - Date     Condition        Report By
 HU2592  HISTORY     - 1986     MONUMENTED       NGS
 HU2592
 HU2592                          STATION DESCRIPTION
 HU2592
 HU2592'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 HU2592'THE STATION IS LOCATED ABOUT 4-3/4 MILES NORTHEAST OF WHALEYSVILLE,
 HU2592'MARYLAND, 1 MILE WEST OF SELBYVILLE, DELAWARE AND ON THE PROPERTY
 HU2592'OF MR. DONALD HUDSON, ROUTE 2, BOX 12 A, SELBYVILLE, DELAWARE.
 HU2592'TO REACH THE STATION FROM THE POST OFFICE IN SELBYVILLE,
 HU2592'DELAWARE, GO SOUTHWEST ON CHURCH STREET FOR 0.25 MILE TO A
 HU2592'RAILROAD CROSSING.  CONTINUE SOUTHWEST ON CHURCH STREET FOR 0.35
 HU2592'MILE TO THE JUNCTION OF U.S. HIGHWAY 113.  TURN RIGHT AND GO NORTH
 HU2592'ON U.S. HIGHWAY 113 FOR 0.2 MILE TO THE JUNCTION OF STATE HIGHWAY
 HU2592'54.  TURN LEFT AND GO NORTHWEST ON STATE HIGHWAY 54 FOR 0.25
 HU2592'MILE TO A Y IN ROAD.  TURN LEFT AND GO SOUTH ON PAVED ROAD FOR
 HU2592'0.2 MILE TO A T-ROAD JUNCTION.  TURN LEFT AND GO SOUTHWEST
 HU2592'ON PAVED ROAD FOR 0.85 MILE TO THE STATION ON THE RIGHT.
 HU2592'THE STATION IS SET IN A 0.3 M (1.0 FT) ROUND CONCRETE POST RECESSED
 HU2592'.10 M (0.3 FT) BELOW THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5724 ***********************************************************************
 JV5724  DESIGNATION -  DAVISON
 JV5724  PID         -  JV5724
 JV5724  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5724  COUNTRY     -  US
 JV5724  USGS QUAD   -  CURTIS BAY (2016)
 JV5724
 JV5724                         *CURRENT SURVEY CONTROL
 JV5724  ______________________________________________________________________
 JV5724* NAD 83(1991) POSITION- 39 12 27.28796(N) 076 33 47.16921(W)   ADJUSTED
 JV5724* NAVD 88 ORTHO HEIGHT -    44.    (meters)      144.    (feet) SCALED
 JV5724  ______________________________________________________________________
 JV5724  GEOID HEIGHT    -        -32.943 (meters)                     GEOID18
 JV5724  LAPLACE CORR    -         -3.64  (seconds)                    DEFLEC18
 JV5724  HORZ ORDER      -  SECOND
 JV5724
 JV5724.The horizontal coordinates were established by classical geodetic methods
 JV5724.and adjusted by the National Geodetic Survey in January 1992.
 JV5724
 JV5724.The orthometric height was scaled from a topographic map.
 JV5724
 JV5724.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5724.GEOID18 height accuracy estimate available here.
 JV5724
 JV5724.Click photographs - Photos may exist for this station.
 JV5724
 JV5724.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5724
 JV5724. The following values were computed from the NAD 83(1991) position.
 JV5724
 JV5724;                    North         East     Units Scale Factor Converg.
 JV5724;SPC MD       -   171,140.548   437,734.614   MT  0.99996657   +0 16 27.2
 JV5724;SPC MD       -   561,483.61  1,436,134.31   sFT  0.99996657   +0 16 27.2
 JV5724;UTM  18      - 4,340,976.236   365,041.185   MT  0.99982427   -0 59 17.6
 JV5724
 JV5724!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5724!SPC MD       -   0.99999830  x   0.99996657  =   0.99996487
 JV5724!UTM  18      -   0.99999830  x   0.99982427  =   0.99982257
 JV5724
 JV5724:                Primary Azimuth Mark                     Grid Az
 JV5724:SPC MD       -  CURTIS BAY CHARLES WALTON TANK           287 16 02.6
 JV5724:UTM  18      -  CURTIS BAY CHARLES WALTON TANK           288 31 47.4
 JV5724
 JV5724_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6504140976(NAD 83)
 JV5724
 JV5724|---------------------------------------------------------------------|
 JV5724| PID    Reference Object                     Distance      Geod. Az  |
 JV5724|                                                           dddmmss.s |
 JV5724| JV5739 HAWKINS POINT GLIDDEN CO TANK       APPROX. 1.9 KM 0903802.4 |
 JV5724| CB1139 DAVISON RM 1                         19.434 METERS 12410     |
 JV5724| JV5678 BALTIMORE GAS WAGNER STA N STK      APPROX. 4.5 KM 1362116.4 |
 JV5724| JV5820 FERNDALE STANDPIPE                  APPROX. 6.9 KM 2560824.3 |
 JV5724| JV5709 CURTIS BAY CHARLES WALTON TANK      APPROX. 2.6 KM 2873229.8 |
 JV5724| JV5670 CURTIS BAY TANK                     APPROX. 3.2 KM 3064643.3 |
 JV5724| CB1140 DAVISON RM 2                         19.842 METERS 33543     |
 JV5724|---------------------------------------------------------------------|
 JV5724
 JV5724                          SUPERSEDED SURVEY CONTROL
 JV5724
 JV5724  NAD 83(1986)-  39 12 27.28422(N)    076 33 47.17883(W) AD(       ) 2
 JV5724  NAD 27      -  39 12 26.89590(N)    076 33 48.30660(W) AD(       ) 2
 JV5724
 JV5724.Superseded values are not recommended for survey control.
 JV5724
 JV5724.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5724.See file dsdata.pdf to determine how the superseded data were derived.
 JV5724
 JV5724_MARKER: DS = TRIANGULATION STATION DISK
 JV5724_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5724_STAMPING: DAVISON 1957
 JV5724_MARK LOGO: CGS
 JV5724_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5724+STABILITY: SURFACE MOTION
 JV5724
 JV5724  HISTORY     - Date     Condition        Report By
 JV5724  HISTORY     - 1957     MONUMENTED       CGS
 JV5724
 JV5724                          STATION DESCRIPTION
 JV5724
 JV5724'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5724'THE STATION IS LOCATED ABOUT 3.0 MILES SOUTHEAST OF BROOKLYN, 1.5
 JV5724'MILES WEST OF HAWKINS POINT, 0.5 MILES SOUTH OF CURTIS BAY AND
 JV5724'1 MILE EAST OF CURTIS CREEK.  IT IS 125 FEET SOUTH OF THE
 JV5724'SOUTHEAST CORNER OF GREEN SHINGLED HOUSE.  THE MARK IS SET FLUSH
 JV5724'WITH SURFACE OF THE GROUND AND THE DISK IS STAMPED DAVISON 1957.
 JV5724'
 JV5724'R.M. NO. 1 IS 1 FOOT SOUTHWEST OF WITNESS POST.  THE MARK IS
 JV5724'SET FLUSH WITH THE GROUND AND THE DISK IS STAMPED DAVISON NO 1 1957.
 JV5724'
 JV5724'R.M. NO.2 IS 67 FEET SOUTH OF SOUTHEAST CORNER OF GREEN SHINGLED
 JV5724'HOUSE AND 59 FEET WEST OF SOUTHWEST CORNER OF GREEN SHINGLED
 JV5724'HOUSE.  THE MARK IS SET 2 INCHES BELOW THE SURFACE OF THE
 JV5724'GROUND AND THE DISK IS STAMPED DAVISON NO 2 1957.
 JV5724'
 JV5724'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 301, BUSINESS
 JV5724'ROUTE AND STATE HIGHWAY NO.2 NORTH OF GLEN BURNIE.  GO NORTH ON
 JV5724'U.S. HIGHWAY NO.301 AND STATE HIGHWAY NO.2 FOR 0.9 MILE TO A
 JV5724'NEW OVERPASS, CONTINUE ON HIGHWAY FOR 0.2 MILE TO A SURFACE ROAD
 JV5724'RIGHT, TURN RIGHT AND GO EAST ON STATE HIGHWAY NO 710 FOR 1.75
 JV5724'MILES TO A T INTERSECTION AT HAWKINS POINT ROAD, TURN SHARP
 JV5724'RIGHT AND GO EASTERLY FOR 0.7 MILE TO SIDE ROAD LEFT AT SIGN
 JV5724'DAVISON CHEMICAL, TURN LEFT ON CHEMICAL ROAD AND GO 0.4
 JV5724'MILE TO FORK, TAKE RIGHT FORK CROSSING BRIDGE OVER R.R.
 JV5724'TRACKS, GO 0.2 MILE TO FORK, TAKE LEFT FORK ON NARROW GRAVEL
 JV5724'ROAD FOR 0.1 MILE TO CIRCLE DRIVE AND TWO BUILDINGS, GO
 JV5724'BETWEEN BUILDINGS AND ON EAST SIDE OF HEDGE FOR ABOUT 100
 JV5724'FEET TO STATION SITE.
 JV5724'
 JV5724'NO AZIMUTH MARK WAS SET.  USE WATER TANK AS AZIMUTH.
 JV5724'
 JV5724'HEIGHT OF LIGHT ABOVE STATION MARK 24 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4813 ***********************************************************************
 JV4813  DESIGNATION -  DAWSON
 JV4813  PID         -  JV4813
 JV4813  STATE/COUNTY-  MD/CECIL
 JV4813  COUNTRY     -  US
 JV4813  USGS QUAD   -  CONOWINGO DAM (2016)
 JV4813
 JV4813                         *CURRENT SURVEY CONTROL
 JV4813  ______________________________________________________________________
 JV4813* NAD 83(1992) POSITION- 39 42 44.10531(N) 076 09 38.56659(W)   ADJUSTED
 JV4813* NAD 83(1992) ELLIP HT-   129.811 (meters)        (08/26/96)   ADJUSTED
 JV4813* NAVD 88 ORTHO HEIGHT -   162.8   (meters)      534.    (feet) GPS OBS
 JV4813  ______________________________________________________________________
 JV4813  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV4813  GEOID HEIGHT    -        -33.246 (meters)                     GEOID93
 JV4813  GEOID HEIGHT    -        -32.935 (meters)                     GEOID18
 JV4813  NAD 83(1992) X  -  1,175,253.721 (meters)                     COMP
 JV4813  NAD 83(1992) Y  - -4,770,652.328 (meters)                     COMP
 JV4813  NAD 83(1992) Z  -  4,053,542.496 (meters)                     COMP
 JV4813  LAPLACE CORR    -         -0.84  (seconds)                    DEFLEC18
 JV4813  HORZ ORDER      -  FIRST
 JV4813  ELLP ORDER      -  FOURTH    CLASS I
 JV4813
 JV4813.The horizontal coordinates were established by classical geodetic methods
 JV4813.and adjusted by the National Geodetic Survey in August 1996.
 JV4813
 JV4813.The orthometric height was determined by GPS observations and a
 JV4813.high-resolution geoid model.
 JV4813
 JV4813.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4813.GEOID18 height accuracy estimate available here.
 JV4813
 JV4813.Click photographs - Photos may exist for this station.
 JV4813
 JV4813.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV4813
 JV4813.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4813
 JV4813.The ellipsoidal height was determined by GPS observations
 JV4813.and is referenced to NAD 83.
 JV4813
 JV4813. The following values were computed from the NAD 83(1992) position.
 JV4813
 JV4813;                    North         East     Units Scale Factor Converg.
 JV4813;SPC MD       -   227,412.170   471,972.930   MT  1.00005641   +0 31 36.4
 JV4813;SPC MD       -   746,101.43  1,548,464.52   sFT  1.00005641   +0 31 36.4
 JV4813;SPC PA S     -    43,299.733   736,281.651   MT  1.00004192   +1 01 52.0
 JV4813;SPC PA S     -   142,059.21  2,415,617.38   sFT  1.00004192   +1 01 52.0
 JV4813;UTM  18      - 4,396,464.698   400,506.005   MT  0.99972187   -0 44 30.0
 JV4813
 JV4813!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4813!SPC MD       -   0.99997964  x   1.00005641  =   1.00003604
 JV4813!SPC PA S     -   0.99997964  x   1.00004192  =   1.00002155
 JV4813!UTM  18      -   0.99997964  x   0.99972187  =   0.99970151
 JV4813
 JV4813:                Primary Azimuth Mark                     Grid Az
 JV4813:SPC MD       -  DAWSON AZ MK                             060 00 49.3
 JV4813:SPC PA S     -  DAWSON AZ MK                             059 30 33.7
 JV4813:UTM  18      -  DAWSON AZ MK                             061 16 55.7
 JV4813
 JV4813_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0050696464(NAD 83)
 JV4813
 JV4813|---------------------------------------------------------------------|
 JV4813| PID    Reference Object                     Distance      Geod. Az  |
 JV4813|                                                           dddmmss.s |
 JV4813| CA9322 DAWSON AZ MK                                       0603225.7 |
 JV4813| JV4818 DAWSON RM 3                           7.112 METERS 08356     |
 JV4813| CA9323 DAWSON RM 1                          18.442 METERS 15433     |
 JV4813| JV4812 CONOWINGO BAPTIST CHURCH SPIRE      APPROX. 3.4 KM 1834559.8 |
 JV4813| CA9324 DAWSON RM 2                          26.685 METERS 29153     |
 JV4813|---------------------------------------------------------------------|
 JV4813
 JV4813                          SUPERSEDED SURVEY CONTROL
 JV4813
 JV4813  NAD 83(1991)-  39 42 44.10499(N)    076 09 38.56721(W) AD(       ) 1
 JV4813  NAD 83(1986)-  39 42 44.09944(N)    076 09 38.57136(W) AD(       ) 1
 JV4813  NAD 27      -  39 42 43.72000(N)    076 09 39.74600(W) AD(       ) 1
 JV4813  NGVD 29 (06/18/91)  164.     (m)  UNKNOWN  model used  GPS OBS        
 JV4813
 JV4813.Superseded values are not recommended for survey control.
 JV4813
 JV4813.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4813.See file dsdata.pdf to determine how the superseded data were derived.
 JV4813
 JV4813_MARKER: DS = TRIANGULATION STATION DISK
 JV4813_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4813_STAMPING: DAWSON 1935
 JV4813_MARK LOGO: CGS
 JV4813_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV4813_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4813+STABILITY: SURFACE MOTION
 JV4813_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4813+SATELLITE: SATELLITE OBSERVATIONS - May 06, 1994
 JV4813
 JV4813  HISTORY     - Date     Condition        Report By
 JV4813  HISTORY     - 1935     MONUMENTED       CGS
 JV4813  HISTORY     - 1935     GOOD             CGS
 JV4813  HISTORY     - 1947     GOOD             CGS
 JV4813  HISTORY     - 1974     GOOD             NGS
 JV4813  HISTORY     - 19891001 GOOD             RDA
 JV4813  HISTORY     - 19940506 GOOD             ADRGS
 JV4813
 JV4813                          STATION DESCRIPTION
 JV4813
 JV4813'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JB)
 JV4813'THIS IS A FIRST ORDER STATION LOCATED ON THE PROPERTY OF
 JV4813'MRS. SADIE D. DAWSON, ABOUT 3.0 MILES NE OF CONOWINGO, MD.,
 JV4813'ABOUT 0.2 MILE S OF ROCK SPRING, MD., ABOUT 0.7 MILE S OF
 JV4813'PA.-MD. LINE ON U.S. ROUTE NO.222 AND 50 YARDS E OF ROUTE
 JV4813'U.S. NO.222.
 JV4813'
 JV4813'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 JV4813'BRONZE DISKS SET IN CONCRETE.
 JV4813'
 JV4813'REFERENCE MARK NO.1 IS SE OF THE STATION AND PROJECTS 6 INCHES.
 JV4813'
 JV4813'REFERENCE MARK NO.2 IS SW OF THE STATION AND PROJECTS 6 INCHES.
 JV4813'
 JV4813'AZIMUTH MARK IS LOCATED 0.4 MILE NE OF THE STATION IN THE N
 JV4813'SIDE OF PASTURE 2 FEET S OF FENCE, 42 PACES E OF JOG IN FENCE
 JV4813'AND ABOUT 200 YARDS ENE OF A LARGE RED BRICK HOUSE AND WHITE
 JV4813'BARN.  MARK PROJECTS 10 INCHES.
 JV4813'
 JV4813'TO REACH STATION FROM QUARRYVILLE, PA., GO S ON U.S. HIGHWAY
 JV4813'NO.222 FOR 13.6 MILES (0.7 MILES S OF STATE LINE, 0.2 MILES S OF
 JV4813'ROCK SPRING CROSSROADS) TO TOP OF HILL, TURN SHARP LEFT ON OLD
 JV4813'ROAD ALONG S SIDE OF FENCE, ABOUT 50 YARDS TO STATION SITE.  MARK
 JV4813'PROJECTS 6 INCHES.
 JV4813'
 JV4813'A 90-FOOT TOWER CLEARS ALL LINES.
 JV4813
 JV4813                          STATION RECOVERY (1935)
 JV4813
 JV4813'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JV4813'RECOVERED IN GOOD CONDITION.
 JV4813
 JV4813                          STATION RECOVERY (1947)
 JV4813
 JV4813'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947 (CRR)
 JV4813'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 JV4813'TO BE IN GOOD CONDITION.  A COMPLETE NEW DESCRIPTION FOLLOWS--THE
 JV4813'STATION IS LOCATED ABOUT THREE MILES NORTHEAST OF CONOWINGO AND
 JV4813'0.7 MILE SOUTH OF THE PENNSYLVANIA-MARYLAND BOUNDARY LINE.  IT
 JV4813'IS 50 YARDS EAST OF U.S. HIGHWAY 222, 10 FEET NORTH OF A TRACK
 JV4813'ROAD AND 8 FEET NORTH OF AN EAST-WEST FENCE LINE.  THE MARK
 JV4813'PROJECTS ABOUT 8 IN AND THE DISK IS STAMPED DAWSON 1935.
 JV4813'
 JV4813'REFERENCE MARK NO. 1 IS 60.29 FEET SOUTHEAST OF THE STATION AND
 JV4813'22 FEET SOUTH OF THE EAST-WEST FENCE LINE.  THE MARK PROJECTS 10
 JV4813'IN AND THE DISK IS STAMPED DAWSON NO 1 1935.
 JV4813'
 JV4813'REFERENCE MARK NO. 3 IS 87.55 FEET SOUTHWEST OF THE STATION AND
 JV4813'15 FEET SOUTH OF THE EAST-WEST FENCE LINE.  THE MARK PROJECTS
 JV4813'ABOUT 8 IN AND THE DISK IS STAMPED DAWSON NO 3 1935.
 JV4813'
 JV4813'THE AZIMUTH MARK IS APPROXIMATELY 0.4 MILE NORTHEAST OF THE
 JV4813'STATION, 94 PACES NORTH OF POWERLINE POLE 2269 AND 3 FEET NORTH
 JV4813'OF AN EAST-WEST FENCE LINE.  THE MARK PROJECTS 8 IN AND THE DISK
 JV4813'IS STAMPED DAWSON 1935.
 JV4813'
 JV4813'TO REACH THE STATION FROM THE NORTHEAST END OF CONOWINGO DAM,
 JV4813'GO NORTHEAST ON U.S. HIGHWAY 1 FOR 1.0 MILE, TURN LEFT WITH
 JV4813'U.S. HIGHWAY 222 ON A WINDING ROAD FOR 3.1 MILES TO A WOODS ROAD
 JV4813'LEADING UP A HILL.  FOLLOW THIS ROAD FOR 50 YARDS TO THE STATION
 JV4813'AS DESCRIBED.  TO REACH THE AZIMUTH MARK FROM THE STATION, GO
 JV4813'NORTH ON U.S. HIGHWAY 222 FOR 0.2 MILE TO ROCK SPRING CROSSROAD,
 JV4813'TURN RIGHT, GO 0.2 MILE TO POWERLINE POLE 2269.  GO NORTH
 JV4813'ACROSS FIELD FOR 94 PACES AND THE AZIMUTH MARK BY AN EAST-WEST
 JV4813'FENCE AS DESCRIBED.
 JV4813
 JV4813                          STATION RECOVERY (1974)
 JV4813
 JV4813'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 JV4813'THE STATION MARK, REFERENCE MARKS 1 AND 2 AND THE AZIMUTH MARK
 JV4813'WERE RECOVERED.  AN ADDITION HAS BEEN ERECTED TO THE BARN AND IS
 JV4813'ON LINE TO REFERENCE MARK 2, NO DISTANCE OR DIRECTION COULD BE
 JV4813'OBTAINED AT THIS TIME.  THE MARK WAS LEFT INTACT.  A DIFFERENCE
 JV4813'IN DISTANCE AND DIRECTION TO REFERENCE MARK 1 WAS NOTED, DISTANCE
 JV4813'BEING .026 METERS, DIRECTION BEING 2 MINUTES AND 23.2 SECONDS.
 JV4813'THE STATION MARK BEING TOO CLOSE TO A TREE TO ERECT THE TOWER, A
 JV4813'REFERENCE MARK 3 WAS ESTABLISHED AND OCCUPIED AT THIS TIME.
 JV4813'
 JV4813'HEIGHT OF LIGHT ABOVE STATION MARK 1.56 FEET.
 JV4813'
 JV4813'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4813'3 MILES NORTHEAST OF CONOWINGO.
 JV4813
 JV4813                          STATION RECOVERY (1989)
 JV4813
 JV4813'RECOVERY NOTE BY RINKER DETWILER AND ASSOCIATES 1989
 JV4813'THE STATION IS LOCATED IN NORTHWESTERN CECIL COUNTY, MARYLAND ABOUT 3
 JV4813'MILES NORTH OF THE VILLAGE OF CONOWINGO.
 JV4813'THE STATION, RM 1, RM 2, AND RM 3 WERE RECOVERED.  THE AZIMUTH MARK
 JV4813'WAS NOT RECOVERED.  RM 4 WAS ESTABLISHED AT THIS TIME FOR SATELLITE
 JV4813'VISABILITY.  THE PREVIOUS DESCRIPTION IS ADEQUATE.  ADDITIONAL
 JV4813'INFORMATION AS FOLLOWS.
 JV4813'TO REACH THE STATION FROM THE INTERSECTION OF FEDERAL HIGHWAY 1 AND
 JV4813'THE WESTERN END OF THE CONOWINGO POWER DAM PROCEED NORTHEAST ALONG
 JV4813'HIGHWAY 1 1.7 MILES TO ITS INTERSECTION WITH FEDERAL HIGHWAY 222. TURN
 JV4813'LEFT AND PROCEED NORTH ALONG HIGHWAY 222 2.7 MILES TO THE HOLBROOKS
 JV4813'RESIDENCE, BOX NUMBER 1208 TO THE STATION BEHIND THE HOUSE, BOX NUMBER
 JV4813'1208.
 JV4813'THE STATION IS A U.S. COAST AND GEODETIC SURVEY DISK SET IN CONCRETE
 JV4813'ABOUT 6 INCHES ABOVE GROUND STAMPED DAWSON 1955.  THE STATION IS 60.44
 JV4813'FEET NORTH OF REFERENCE MARK NUMBER 1, 126.2 FEET SOUTHWEST OF
 JV4813'REFERENCE MARK NUMBER 4 AND APPROXIMATELY 88 FEET SOUTHEAST OF
 JV4813'REFERENCE MARK NUMBER 2 WHICH HAS BEEN OBSTRUCTED BY AN ADDITION ON A
 JV4813'STORAGE BUIDLING ON THE PROPERTY.
 JV4813
 JV4813                          STATION RECOVERY (1994)
 JV4813
 JV4813'RECOVERY NOTE BY ADR GEODETIC SERVICES 1994 (BAW)
 JV4813'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB6473 ***********************************************************************
 AB6473  DESIGNATION -  DAWSON ECCENTRIC
 AB6473  PID         -  AB6473
 AB6473  STATE/COUNTY-  MD/CECIL
 AB6473  COUNTRY     -  US
 AB6473  USGS QUAD   -  CONOWINGO DAM (2016)
 AB6473
 AB6473                         *CURRENT SURVEY CONTROL
 AB6473  ______________________________________________________________________
 AB6473* NAD 83(2011) POSITION- 39 42 44.77028(N) 076 09 37.53109(W)   ADJUSTED
 AB6473* NAD 83(2011) ELLIP HT-   129.792 (meters)        (06/27/12)   ADJUSTED
 AB6473* NAD 83(2011) EPOCH   -  2010.00
 AB6473* NAVD 88 ORTHO HEIGHT -   162.8   (meters)      534.    (feet) GPS OBS
 AB6473  ______________________________________________________________________
 AB6473  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB6473  GEOID HEIGHT    -        -33.247 (meters)                     GEOID93
 AB6473  GEOID HEIGHT    -        -32.935 (meters)                     GEOID18
 AB6473  NAD 83(2011) X  -  1,175,274.533 (meters)                     COMP
 AB6473  NAD 83(2011) Y  - -4,770,633.690 (meters)                     COMP
 AB6473  NAD 83(2011) Z  -  4,053,558.261 (meters)                     COMP
 AB6473  LAPLACE CORR    -         -0.86  (seconds)                    DEFLEC18
 AB6473
 AB6473  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB6473  Standards:
 AB6473         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB6473            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB6473  -------------------------------------------------------------------
 AB6473  NETWORK    2.99   2.94           1.43   0.83   1.50      0.24482881
 AB6473  -------------------------------------------------------------------
 AB6473  Click here for local accuracies and other accuracy information.
 AB6473
 AB6473.The horizontal coordinates were established by GPS observations
 AB6473.and adjusted by the National Geodetic Survey in June 2012.
 AB6473
 AB6473.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB6473.been affixed to the stable North American tectonic plate. See 
 AB6473.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB6473
 AB6473.The horizontal coordinates are valid at the epoch date displayed above
 AB6473.which is a decimal equivalence of Year/Month/Day.
 AB6473
 AB6473.The orthometric height was determined by GPS observations and a
 AB6473.high-resolution geoid model.
 AB6473
 AB6473.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB6473.GEOID18 height accuracy estimate available here.
 AB6473
 AB6473.Click photographs - Photos may exist for this station.
 AB6473
 AB6473.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB6473
 AB6473.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB6473
 AB6473.The ellipsoidal height was determined by GPS observations
 AB6473.and is referenced to NAD 83.
 AB6473
 AB6473. The following values were computed from the NAD 83(2011) position.
 AB6473
 AB6473;                    North         East     Units Scale Factor Converg.
 AB6473;SPC MD       -   227,432.906   471,997.407   MT  1.00005646   +0 31 37.0
 AB6473;SPC MD       -   746,169.46  1,548,544.83   sFT  1.00005646   +0 31 37.0
 AB6473;UTM  18      - 4,396,484.880   400,530.926   MT  0.99972181   -0 44 29.4
 AB6473
 AB6473!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB6473!SPC MD       -   0.99997964  x   1.00005646  =   1.00003610
 AB6473!UTM  18      -   0.99997964  x   0.99972181  =   0.99970145
 AB6473
 AB6473_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0053096484(NAD 83)
 AB6473
 AB6473|---------------------------------------------------------------------|
 AB6473| PID    Reference Object                     Distance      Geod. Az  |
 AB6473|                                                           dddmmss.s |
 AB6473| JV6734 DAWSON RM 4                           6.469 METERS 03647     |
 AB6473|---------------------------------------------------------------------|
 AB6473
 AB6473                          SUPERSEDED SURVEY CONTROL
 AB6473
 AB6473  NAD 83(2007)-  39 42 44.77007(N)    076 09 37.53175(W) AD(2002.00) 0
 AB6473  ELLIP H (02/10/07)  129.814  (m)                       GP(2002.00)    
 AB6473  ELLIP H (08/30/02)  129.827  (m)                       GP(       ) 4 2
 AB6473  NAD 83(1992)-  39 42 44.76983(N)    076 09 37.53114(W) AD(       ) 1
 AB6473  ELLIP H (08/26/96)  129.825  (m)                       GP(       ) 4 1
 AB6473
 AB6473.Superseded values are not recommended for survey control.
 AB6473
 AB6473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB6473.See file dsdata.pdf to determine how the superseded data were derived.
 AB6473
 AB6473_MARKER: I = METAL ROD
 AB6473_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 AB6473_MAGNETIC: I = MARKER IS A STEEL ROD
 AB6473_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AB6473_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB6473+SATELLITE: SATELLITE OBSERVATIONS - 1993
 AB6473
 AB6473  HISTORY     - Date     Condition        Report By
 AB6473  HISTORY     - 1993     MONUMENTED       ADRGS
 AB6473
 AB6473                          STATION DESCRIPTION
 AB6473
 AB6473'DESCRIBED BY ADR GEODETIC SERVICES 1993 (BAW)
 AB6473'THIS STATION WAS SET AS AN ECCENTRIC TO STATION DAWSON.  TO REACH THE
 AB6473'STATION , SEE THE DESCRIPTION FOR DAWSON.  THE ECCENTRIC IS LOCATED
 AB6473'NORTH OF DAWSON, ACROSS THE PRIVATE DRIVE A DISTANCE OF 100 FEET,
 AB6473'(30.5 M) EAST OF A NORTH SOUTH FENCE, JUST NORTH OF A GATE IN THE
 AB6473'FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4818 ***********************************************************************
 JV4818  DESIGNATION -  DAWSON RM 3
 JV4818  PID         -  JV4818
 JV4818  STATE/COUNTY-  MD/CECIL
 JV4818  COUNTRY     -  US
 JV4818  USGS QUAD   -  CONOWINGO DAM (2016)
 JV4818
 JV4818                         *CURRENT SURVEY CONTROL
 JV4818  ______________________________________________________________________
 JV4818* NAD 83(1991) POSITION- 39 42 44.12933(N) 076 09 38.27057(W)   ADJUSTED
 JV4818* NAVD 88 ORTHO HEIGHT -   160.6   (meters)      527.    (feet) VERTCON3
 JV4818  ______________________________________________________________________
 JV4818  GEOID HEIGHT    -        -32.935 (meters)                     GEOID18
 JV4818  LAPLACE CORR    -         -0.85  (seconds)                    DEFLEC18
 JV4818  HORZ ORDER      -  FIRST
 JV4818
 JV4818.The horizontal coordinates were established by classical geodetic methods
 JV4818.and adjusted by the National Geodetic Survey in January 1992.
 JV4818
 JV4818.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4818.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4818
 JV4818.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4818.GEOID18 height accuracy estimate available here.
 JV4818
 JV4818.Click photographs - Photos may exist for this station.
 JV4818
 JV4818.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4818
 JV4818. The following values were computed from the NAD 83(1991) position.
 JV4818
 JV4818;                    North         East     Units Scale Factor Converg.
 JV4818;SPC MD       -   227,412.976   471,979.974   MT  1.00005641   +0 31 36.5
 JV4818;SPC MD       -   746,104.07  1,548,487.63   sFT  1.00005641   +0 31 36.5
 JV4818;SPC PA S     -    43,300.600   736,288.688   MT  1.00004192   +1 01 52.2
 JV4818;SPC PA S     -   142,062.05  2,415,640.47   sFT  1.00004192   +1 01 52.2
 JV4818;UTM  18      - 4,396,465.348   400,513.063   MT  0.99972185   -0 44 29.9
 JV4818
 JV4818!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4818!SPC MD       -   0.99997997  x   1.00005641  =   1.00003638
 JV4818!SPC PA S     -   0.99997997  x   1.00004192  =   1.00002189
 JV4818!UTM  18      -   0.99997997  x   0.99972185  =   0.99970182
 JV4818
 JV4818:                Primary Azimuth Mark                     Grid Az
 JV4818:SPC MD       -  DAWSON AZ MK                             059 40 34.4
 JV4818:SPC PA S     -  DAWSON AZ MK                             059 10 18.7
 JV4818:UTM  18      -  DAWSON AZ MK                             060 56 40.8
 JV4818
 JV4818_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0051396465(NAD 83)
 JV4818
 JV4818|---------------------------------------------------------------------|
 JV4818| PID    Reference Object                     Distance      Geod. Az  |
 JV4818|                                                           dddmmss.s |
 JV4818| CA9322 DAWSON AZ MK                                       0601210.9 |
 JV4818| CA9323 DAWSON RM 1                          17.427 METERS 17715     |
 JV4818| JV4813 DAWSON                                7.112 METERS 26356     |
 JV4818|---------------------------------------------------------------------|
 JV4818
 JV4818                          SUPERSEDED SURVEY CONTROL
 JV4818
 JV4818  NAD 83(1986)-  39 42 44.12380(N)    076 09 38.27444(W) AD(       ) 1
 JV4818  NAD 27      -  39 42 43.74426(N)    076 09 39.44934(W) AD(       ) 1
 JV4818  NGVD 29 (07/19/86)  160.9    (m)          528.     (f) VERT ANG       
 JV4818
 JV4818.Superseded values are not recommended for survey control.
 JV4818
 JV4818.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4818.See file dsdata.pdf to determine how the superseded data were derived.
 JV4818
 JV4818_MARKER: DR = REFERENCE MARK DISK
 JV4818_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4818_STAMPING: DAWSON NO 3 1935
 JV4818_MARK LOGO: CGS
 JV4818_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4818+STABILITY: SURFACE MOTION
 JV4818
 JV4818  HISTORY     - Date     Condition        Report By
 JV4818  HISTORY     - 1974     MONUMENTED       NGS
 JV4818
 JV4818                          STATION DESCRIPTION
 JV4818
 JV4818'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
 JV4818'STATION MARK DAWSON BEING TOO CLOSE TO A TREE TO ERECT THE TOWER, A
 JV4818'REFERENCE MARK 3 WAS ESTABLISHED AND OCCUPIED AT THIS TIME.
 JV4818'
 JV4818'TO REACH STATION DAWSON FROM THE NORTHEAST END OF CONOWINGO DAM,
 JV4818'GO NORTHEAST ON U.S. HIGHWAY 1 FOR 1.0 MILE, TURN LEFT WITH
 JV4818'U.S. HIGHWAY 222 ON A WINDING ROAD FOR 3.1 MILES TO A WOODS ROAD
 JV4818'LEADING UP A HILL.  FOLLOW THIS ROAD FOR 50 YARDS TO STATION
 JV4818'DAWSON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6734 ***********************************************************************
 JV6734  DESIGNATION -  DAWSON RM 4
 JV6734  PID         -  JV6734
 JV6734  STATE/COUNTY-  MD/CECIL
 JV6734  COUNTRY     -  US
 JV6734  USGS QUAD   -  CONOWINGO DAM (2016)
 JV6734
 JV6734                         *CURRENT SURVEY CONTROL
 JV6734  ______________________________________________________________________
 JV6734* NAD 83(2011) POSITION- 39 42 44.93826(N) 076 09 37.36846(W)   ADJUSTED
 JV6734* NAD 83(2011) ELLIP HT-   129.920 (meters)        (06/27/12)   ADJUSTED
 JV6734* NAD 83(2011) EPOCH   -  2010.00
 JV6734* NAVD 88 ORTHO HEIGHT -   162.9   (meters)      534.    (feet) GPS OBS
 JV6734  ______________________________________________________________________
 JV6734  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6734  GEOID HEIGHT    -        -33.247 (meters)                     GEOID93
 JV6734  GEOID HEIGHT    -        -32.935 (meters)                     GEOID18
 JV6734  NAD 83(2011) X  -  1,175,277.526 (meters)                     COMP
 JV6734  NAD 83(2011) Y  - -4,770,629.645 (meters)                     COMP
 JV6734  NAD 83(2011) Z  -  4,053,562.328 (meters)                     COMP
 JV6734  LAPLACE CORR    -         -0.86  (seconds)                    DEFLEC18
 JV6734
 JV6734  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6734  Standards:
 JV6734         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6734            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6734  -------------------------------------------------------------------
 JV6734  NETWORK    2.70   5.23           1.23   0.88   2.67      0.34124596
 JV6734  -------------------------------------------------------------------
 JV6734  Click here for local accuracies and other accuracy information.
 JV6734
 JV6734.The horizontal coordinates were established by GPS observations
 JV6734.and adjusted by the National Geodetic Survey in June 2012.
 JV6734
 JV6734.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6734.been affixed to the stable North American tectonic plate. See 
 JV6734.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6734
 JV6734.The horizontal coordinates are valid at the epoch date displayed above
 JV6734.which is a decimal equivalence of Year/Month/Day.
 JV6734
 JV6734.The orthometric height was determined by GPS observations and a
 JV6734.high-resolution geoid model.
 JV6734
 JV6734.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6734.GEOID18 height accuracy estimate available here.
 JV6734
 JV6734.Click photographs - Photos may exist for this station.
 JV6734
 JV6734.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6734
 JV6734.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6734
 JV6734.The ellipsoidal height was determined by GPS observations
 JV6734.and is referenced to NAD 83.
 JV6734
 JV6734. The following values were computed from the NAD 83(2011) position.
 JV6734
 JV6734;                    North         East     Units Scale Factor Converg.
 JV6734;SPC MD       -   227,438.122   472,001.233   MT  1.00005647   +0 31 37.1
 JV6734;SPC MD       -   746,186.57  1,548,557.38   sFT  1.00005647   +0 31 37.1
 JV6734;UTM  18      - 4,396,490.009   400,534.866   MT  0.99972180   -0 44 29.3
 JV6734
 JV6734!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6734!SPC MD       -   0.99997962  x   1.00005647  =   1.00003609
 JV6734!UTM  18      -   0.99997962  x   0.99972180  =   0.99970142
 JV6734
 JV6734_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0053496490(NAD 83)
 JV6734
 JV6734|---------------------------------------------------------------------|
 JV6734| PID    Reference Object                     Distance      Geod. Az  |
 JV6734|                                                           dddmmss.s |
 JV6734| AB6473 DAWSON ECCENTRIC                      6.469 METERS 21647     |
 JV6734|---------------------------------------------------------------------|
 JV6734
 JV6734                          SUPERSEDED SURVEY CONTROL
 JV6734
 JV6734  NAD 83(2007)-  39 42 44.93887(N)    076 09 37.36881(W) AD(2002.00) 0
 JV6734  ELLIP H (02/10/07)  129.926  (m)                       GP(2002.00)    
 JV6734  ELLIP H (08/30/02)  129.946  (m)                       GP(       ) 4 2
 JV6734  NAD 83(1992)-  39 42 44.93970(N)    076 09 37.36806(W) AD(       ) 1
 JV6734  ELLIP H (08/26/96)  129.947  (m)                       GP(       ) 4 1
 JV6734  NAD 83(1991)-  39 42 44.93806(N)    076 09 37.36851(W) AD(       ) 1
 JV6734  ELLIP H (01/27/92)  129.967  (m)                       GP(       ) 4 1
 JV6734  NAD 83(1986)-  39 42 44.93147(N)    076 09 37.37415(W) AD(       ) 1
 JV6734  NGVD 29 (06/18/91)  163.2    (m)  UNKNOWN  model used  GPS OBS        
 JV6734
 JV6734.Superseded values are not recommended for survey control.
 JV6734
 JV6734.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6734.See file dsdata.pdf to determine how the superseded data were derived.
 JV6734
 JV6734_MARKER: DR = REFERENCE MARK DISK
 JV6734_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6734_STAMPING: DAWSON RM 4
 JV6734_MARK LOGO: NGS
 JV6734_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6734_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6734+STABILITY: SURFACE MOTION
 JV6734_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6734+SATELLITE: SATELLITE OBSERVATIONS - April 16, 1993
 JV6734
 JV6734  HISTORY     - Date     Condition        Report By
 JV6734  HISTORY     - 1989     MONUMENTED       RDA
 JV6734  HISTORY     - 19930416 GOOD             ADRGS
 JV6734
 JV6734                          STATION DESCRIPTION
 JV6734
 JV6734'DESCRIBED BY ADR GEODETIC SERVICES 1993 (BAW)
 JV6734'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4453 ***********************************************************************
 JV4453  DESIGNATION -  DAWSONVILLE
 JV4453  PID         -  JV4453
 JV4453  STATE/COUNTY-  MD/MONTGOMERY
 JV4453  COUNTRY     -  US
 JV4453  USGS QUAD   -  GERMANTOWN (2016)
 JV4453
 JV4453                         *CURRENT SURVEY CONTROL
 JV4453  ______________________________________________________________________
 JV4453* NAD 83(1993) POSITION- 39 07 36.52369(N) 077 21 15.08340(W)   ADJUSTED
 JV4453* NAVD 88 ORTHO HEIGHT -   114.6   (meters)      376.    (feet) VERTCON3
 JV4453  ______________________________________________________________________
 JV4453  GEOID HEIGHT    -        -31.951 (meters)                     GEOID18
 JV4453  LAPLACE CORR    -          4.12  (seconds)                    DEFLEC18
 JV4453  HORZ ORDER      -  FIRST
 JV4453
 JV4453.The horizontal coordinates were established by classical geodetic methods
 JV4453.and adjusted by the National Geodetic Survey in November 1994.
 JV4453
 JV4453.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4453.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4453
 JV4453.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4453.GEOID18 height accuracy estimate available here.
 JV4453
 JV4453.Click photographs - Photos may exist for this station.
 JV4453
 JV4453.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4453
 JV4453. The following values were computed from the NAD 83(1993) position.
 JV4453
 JV4453;                    North         East     Units Scale Factor Converg.
 JV4453;SPC MD       -   162,143.257   369,373.972   MT  0.99995942   -0 13 20.3
 JV4453;SPC MD       -   531,965.00  1,211,854.44   sFT  0.99995942   -0 13 20.3
 JV4453;UTM  18      - 4,333,488.261   296,499.174   MT  1.00010994   -1 29 09.9
 JV4453
 JV4453!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4453!SPC MD       -   0.99998704  x   0.99995942  =   0.99994646
 JV4453!UTM  18      -   0.99998704  x   1.00010994  =   1.00009697
 JV4453
 JV4453:                Primary Azimuth Mark                     Grid Az
 JV4453:SPC MD       -  DAWSONVILLE AZ MK                        121 52 43.3
 JV4453:UTM  18      -  DAWSONVILLE AZ MK                        123 08 32.9
 JV4453
 JV4453_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9649933488(NAD 83)
 JV4453
 JV4453|---------------------------------------------------------------------|
 JV4453| PID    Reference Object                     Distance      Geod. Az  |
 JV4453|                                                           dddmmss.s |
 JV4453| JV4461 BROWNSTOWN PEPCO MICROWAVE          APPROX. 5.4 KM 0770721.4 |
 JV4453| CJ9627 DAWSONVILLE RM 1                     62.844 METERS 08230     |
 JV4453| CJ9626 DAWSONVILLE AZ MK                                  1213923.0 |
 JV4453| CJ9629 DAWSONVILLE RM 3                     22.425 METERS 19748     |
 JV4453| CJ9628 DAWSONVILLE RM 2                     52.928 METERS 22632     |
 JV4453| JV4544 POOLESVILLE ST PETERS EPIS CH       APPROX. 6.0 KM 2910510.8 |
 JV4453|---------------------------------------------------------------------|
 JV4453
 JV4453                          SUPERSEDED SURVEY CONTROL
 JV4453
 JV4453  NAD 83(1991)-  39 07 36.52346(N)    077 21 15.08387(W) AD(       ) 1
 JV4453  NAD 83(1986)-  39 07 36.52335(N)    077 21 15.09393(W) AD(       ) 1
 JV4453  NAD 27      -  39 07 36.13755(N)    077 21 16.13914(W) AD(       ) 1
 JV4453  NGVD 29 (07/19/86)  114.8    (m)          377.     (f) VERT ANG       
 JV4453
 JV4453.Superseded values are not recommended for survey control.
 JV4453
 JV4453.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4453.See file dsdata.pdf to determine how the superseded data were derived.
 JV4453
 JV4453_MARKER: DS = TRIANGULATION STATION DISK
 JV4453_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4453_STAMPING: DAWSONVILLE 1958
 JV4453_MARK LOGO: CGS
 JV4453_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4453+STABILITY: SURFACE MOTION
 JV4453
 JV4453  HISTORY     - Date     Condition        Report By
 JV4453  HISTORY     - 1958     MONUMENTED       CGS
 JV4453  HISTORY     - 1966     GOOD             CGS
 JV4453  HISTORY     - 1969     GOOD             CGS
 JV4453
 JV4453                          STATION DESCRIPTION
 JV4453
 JV4453'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (WER)
 JV4453'THE STATION IS ABOUT 0.4 MILE WEST OF THE VILLAGE OF DAWSONVILLE
 JV4453'ALONG THE NORTH SIDE OF MARYLAND HIGHWAY 107, ON PROPERTY OWNED BY
 JV4453'MR.  JOSEPH D. BYRD.
 JV4453'
 JV4453'TO REACH FROM THE JUNCTION OF MARYLAND HIGHWAY 28,107 AND 121, AT THE
 JV4453'EAST EDGE OF DAWSONVILLE, GO WEST ON HIGHWAYS 107 AND 121 FOR 0.2
 JV4453'MILE TO CROSSROADS AND THE HIGHWAYS SEPARATE.  CONTINUE WEST ON
 JV4453'HIGHWAY 107 FOR 0.45 MILE TO STATION ON THE RIGHT.  TO REACH THE
 JV4453'AZIMUTH MARK FROM CROSSROADS, TURN LEFT AND GO SOUTH ON HIGHWAY 121
 JV4453'FOR 0.35 MILE TO A DRIVEWAY WHICH LEADS WEST TO THE HOME OF MR.
 JV4453'BYRD AND THE AZIMUTH MARK IN THE SOUTHWEST ANGLE OF ROAD AND DRIVEWAY
 JV4453'JUNCTION.
 JV4453'
 JV4453'STATION MARKS ARE STANDARD DISKS STAMPED DAWSONVILLE 1958.  THE
 JV4453'SURFACE DISK IS SET IN A SQUARE CONCRETE POST FLUSH WITH THE SURFACE
 JV4453'OF THE GROUND.  IT IS 212 FEET WEST OF THE SOUTHWEST CORNER OF MR.
 JV4453'E.R. ALLNUTTS HOUSE, 39 FEET NORTH OF THE CENTER OF HIGHWAY 107
 JV4453'AND 15 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF FENCE.  A
 JV4453'STANDARD WITNESS POST WAS SET 22 FEET SOUTHEAST OF MARK.  THE
 JV4453'UNDERGROUND DISK IS SET IN AN IRREGULAR MASS OF CONCRETE 30 INCHES
 JV4453'BELOW THE SURFACE OF THE GROUND.
 JV4453'
 JV4453'REFERENCE MARK NO. 1, A STANDARD DISK STAMPED DAWSONVILLE NO 1 1958,
 JV4453'IS SET IN A SQUARE CONCRETE POST WHICH PROJECTS 5 INCHES.  IT IS 95
 JV4453'FEET SOUTH OF THE SOUTHWEST CORNER OF HOUSE, 135 FEET
 JV4453'WEST-SOUTHWEST OF MR. ALLNUTTS DRIVEWAY, 20 FEET SOUTH OF THE
 JV4453'CENTER OF HIGHWAY AND 8 FEET SOUTHWEST OF A POWER LINE POLE WITH
 JV4453'TRANSFORMER.
 JV4453'
 JV4453'REFERENCE MARK NO. 2, A STANDARD DISK STAMPED DAWSONVILLE NO 2 1958,
 JV4453'IS SET IN A SQUARE CONCRETE POST WHICH PROJECTS 5 INCHES.  IT IS 142
 JV4453'FEET EAST-SOUTHEAST OF THE SOUTH END OF A CULVERT, 18 FEET SOUTH OF
 JV4453'THE CENTER OF HIGHWAY, AND 1 FOOT SOUTH OF THE RIGHT-OF-WAY FENCE.
 JV4453'
 JV4453'AZIMUTH MARK, A STANDARD DISK STAMPED DAWSONVILLE 1958, IS SET IN A
 JV4453'SQUARE CONCRETE POST FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 24
 JV4453'FEET WEST OF THE CENTER OF HIGHWAY 121, 15 FEET SOUTH OF THE CENTER
 JV4453'OF DRIVEWAY, 1 FOOT WEST OF A POWER LINE POLE AND 1 FOOT NORTH OF THE
 JV4453'NORTHEAST CORNER OF FENCE.  A STANDARD WITNESS POST WAS SET 3
 JV4453'FEET EAST OF MARK.
 JV4453'
 JV4453'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4453
 JV4453                          STATION RECOVERY (1966)
 JV4453
 JV4453'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (JAA)
 JV4453'THE STATION, REFERENCE MARK NO. 1 AND THE AZIMUTH MARK WERE RECOVERED
 JV4453'AND FOUND IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION WAS FOUND TO
 JV4453'BE ADEQUATE WITH THE FOLLOWING EXCEPTION, REFERENCE MARK NO. 1 IS E
 JV4453'OF THE STATION AND NOT ENE AS LISTED.  REFERENCE MARK NO. 2 WAS
 JV4453'FOUND TO BE PROJECTING ABOUT TWO FEET OUT OF THE GROUND AND WAS IN
 JV4453'THE WAY OF CULTIVATION.  AT THE REQUEST OF THE PROPERTY OWNER IT
 JV4453'WAS DESTROYED AND THE DISK REMOVED.  A NEW REFERENCE MARK NO. 3
 JV4453'WAS ESTABLISHED.  AN 8 FT. TARGET WAS REQUIRED OVER THE AZIMUTH
 JV4453'MARK TO SEE FROM A 5 FT. TRIPOD AT STATION.  A NEW DESCRIPTION TO
 JV4453'THE STATION FOLLOWS.
 JV4453'
 JV4453'THE STATION IS ABOUT 0.4 MILE WEST OF THE VILLAGE OF DAWSONVILLE
 JV4453'ALONG THE NORTH SIDE OF MARYLAND HIGHWAY 107, ON PROPERTY OWNED BY
 JV4453'MR. JOSEPH D. BYRD.
 JV4453'
 JV4453'TO REACH FROM THE JUNCTION OF MARYLAND HIGHWAYS 28, 107 AND 121, AT
 JV4453'THE EAST EDGE OF DAWSONVILLE, GO WEST ON HIGHWAYS 107 AND 121 FOR
 JV4453'0.2 MILE TO A CROSSROAD AND THE HIGHWAYS SEPARATE, CONTINUE WEST ON
 JV4453'HIGHWAY 107 FOR 0.45 MILE TO STATION ON THE RIGHT.
 JV4453'
 JV4453'STATION MARKS ARE STANDARD DISKS STAMPED DAWSONVILLE 1958.  THE
 JV4453'SURFACE DISK IS SET IN A SQUARE CONCRETE POST FLUSH WITH THE SURFACE
 JV4453'OF THE GROUND.  IT IS 212 FEET WEST OF THE SOUTHWEST CORNER OF MR.
 JV4453'E. R. ALLNUTTS HOUSE, 39 FEET NORTH OF THE CENTERLINE OF HIGHWAY
 JV4453'107 AND 15 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF FENCE.  THE
 JV4453'UNDERGROUND MARK IS A STANDARD DISK SET IN AN IRREGULAR MASS
 JV4453'OF CONCRETE 30 INCHES BELOW THE SURFACE OF THE GROUND.
 JV4453'
 JV4453'REFERENCE MARK NO. 1, A STANDARD DISK STAMPED DAWSONVILLE NO 1 1958,
 JV4453'IS SET IN A SQUARE CONCRETE POST WHICH PROJECTS 5 INCHES.  IT IS 95
 JV4453'FEET SOUTH OF THE SOUTHWEST CORNER OF HOUSE, 135 FEET
 JV4453'WEST-SOUTHWEST OF MR. ALLNUTS DRIVEWAY, 20 FEET SOUTH OF THE
 JV4453'CENTERLINE OF THE HIGHWAY, AND 8 FEET SOUTHWEST OF A POWERLINE
 JV4453'POLE WITH TRANSFORMER.
 JV4453'
 JV4453'REFERENCE MARK NO. 3, A STANDARD DISK STAMPED DAWSONVILLE NO 3 1958
 JV4453'1966, IS SET IN A ROUND CONCRETE POST WHICH PROJECTS ABOUT TWO
 JV4453'INCHES ABOVE THE GROUND.  IT IS 16 FEET SOUTH OF THE CENTERLINE OF
 JV4453'THE HIGHWAY AND 1.5 FEET EAST OF UTILITY POLE NO. PEP629718.
 JV4453'
 JV4453'AZIMUTH MARK, A STANDARD DISK STAMPED DAWSONVILLE 1958, IS SET IN A
 JV4453'SQUARE CONCRETE POST FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 24
 JV4453'FEET WEST OF THE CENTERLINE OF HIGHWAY 121, 15 FEET SOUTH OF THE
 JV4453'CENTER OF DRIVEWAY, 1 FOOT WEST OF A POWERLINE POLE, AND 1 FOOT
 JV4453'NORTH OF THE NORTHWEST CORNER OF A FENCE.  TO REACH FROM THE
 JV4453'STATION, GO EAST FOR 0.45 MILE, TURN RIGHT AND GO SOUTH FOR 0.35
 JV4453'MILE TO THE MARK ON THE RIGHT.
 JV4453'
 JV4453'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--0.4 MILE WEST OF
 JV4453'DAWSONVILLE.
 JV4453
 JV4453                          STATION RECOVERY (1969)
 JV4453
 JV4453'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4453'THE STATION MARK, REFERENCE MARKS 1, 3 AND THE AZIMUTH MARK WERE
 JV4453'RECOVERED AS DESCRIBED IN 1966 BY J.A. ANDREWS.
 JV4453'
 JV4453'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--0.4 MILE WEST OF
 JV4453'DAWSONVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4205 ***********************************************************************
 JV4205  DESIGNATION -  DAY
 JV4205  PID         -  JV4205
 JV4205  STATE/COUNTY-  MD/CARROLL
 JV4205  COUNTRY     -  US
 JV4205  USGS QUAD   -  WINFIELD (2016)
 JV4205
 JV4205                         *CURRENT SURVEY CONTROL
 JV4205  ______________________________________________________________________
 JV4205* NAD 83(1991) POSITION- 39 23 13.52466(N) 077 03 18.59440(W)   ADJUSTED
 JV4205* NAVD 88 ORTHO HEIGHT -   234.    (meters)      768.    (feet) SCALED
 JV4205  ______________________________________________________________________
 JV4205  GEOID HEIGHT    -        -31.905 (meters)                     GEOID18
 JV4205  LAPLACE CORR    -         -0.17  (seconds)                    DEFLEC18
 JV4205  HORZ ORDER      -  SECOND
 JV4205
 JV4205.The horizontal coordinates were established by classical geodetic methods
 JV4205.and adjusted by the National Geodetic Survey in January 1992.
 JV4205
 JV4205.The orthometric height was scaled from a topographic map.
 JV4205
 JV4205.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4205.GEOID18 height accuracy estimate available here.
 JV4205
 JV4205.Click photographs - Photos may exist for this station.
 JV4205
 JV4205.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4205
 JV4205. The following values were computed from the NAD 83(1991) position.
 JV4205
 JV4205;                    North         East     Units Scale Factor Converg.
 JV4205;SPC MD       -   190,980.664   395,247.442   MT  0.99998960   -0 02 04.6
 JV4205;SPC MD       -   626,575.73  1,296,740.98   sFT  0.99998960   -0 02 04.6
 JV4205;UTM  18      - 4,361,748.600   323,005.902   MT  0.99998572   -1 18 16.0
 JV4205
 JV4205!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4205!SPC MD       -   0.99996833  x   0.99998960  =   0.99995793
 JV4205!UTM  18      -   0.99996833  x   0.99998572  =   0.99995405
 JV4205
 JV4205:                Primary Azimuth Mark                     Grid Az
 JV4205:SPC MD       -  DAY AZ MK                                313 12 27.1
 JV4205:UTM  18      -  DAY AZ MK                                314 28 38.5
 JV4205
 JV4205_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2300561748(NAD 83)
 JV4205
 JV4205|---------------------------------------------------------------------|
 JV4205| PID    Reference Object                     Distance      Geod. Az  |
 JV4205|                                                           dddmmss.s |
 JV4205| JV6068 SYKESVILLE SPRINGFIELD HOSP TK      APPROX. 8.1 KM 0913701.0 |
 JV4205| JV6615 DAY RM 1                             20.507 METERS 20054     |
 JV4205| JV4218 RIDGEVILLE NURSERIES TANK           APPROX. 9.9 KM 2552707.0 |
 JV4205| JV4239 MT AIRY MUNICIPAL TANK              APPROX. 8.2 KM 2640634.8 |
 JV4205| CJ9631 DAY RM 2                             38.664 METERS 29156     |
 JV4205| JV6616 DAY RM 3                             35.287 METERS 29538     |
 JV4205| CJ9630 DAY AZ MK                                          3131022.5 |
 JV4205| JV6571 DAY AZ MK 2                         478.502 METERS 3145244.6 |
 JV4205|---------------------------------------------------------------------|
 JV4205
 JV4205                          SUPERSEDED SURVEY CONTROL
 JV4205
 JV4205  NAD 83(1986)-  39 23 13.52403(N)    077 03 18.60240(W) AD(       ) 2
 JV4205  NAD 27      -  39 23 13.15000(N)    077 03 19.67500(W) AD(       ) 2
 JV4205
 JV4205.Superseded values are not recommended for survey control.
 JV4205
 JV4205.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4205.See file dsdata.pdf to determine how the superseded data were derived.
 JV4205
 JV4205_MARKER: DS = TRIANGULATION STATION DISK
 JV4205_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4205_STAMPING: DAY 1943
 JV4205_MARK LOGO: CGS
 JV4205_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV4205_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4205+STABILITY: SURFACE MOTION
 JV4205
 JV4205  HISTORY     - Date     Condition        Report By
 JV4205  HISTORY     - 1943     MONUMENTED       CGS
 JV4205  HISTORY     - 1943     GOOD             CGS
 JV4205  HISTORY     - 19820922 GOOD             NGS
 JV4205
 JV4205                          STATION DESCRIPTION
 JV4205
 JV4205'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4205'THE STATION IS LOCATED AT THE SW CORNER OF A T-INTERSECTION IN
 JV4205'THE VILLAGE OF DAY AND IN THE LAWN OF PROPERTY OWNED BY
 JV4205'MR. B.C. MULLINIX.  IT IS 50 FEET E OF THE CENTER OF STATE
 JV4205'HIGHWAY 94 AND 51 FEET S OF AN E AND W PAVED T-ROAD.  IT IS
 JV4205'SET FLUSH WITH THE GROUND AND THE DISK IS STAMPED DAY 1943.
 JV4205'
 JV4205'SURFACE, UNDERGROUND, AND AZIMUTH MARKS ARE BRONZE DISKS SET
 JV4205'IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 JV4205'
 JV4205'REFERENCE MARK NO.1 IS SET IN THE W END OF THE SIDEWALK TO THE
 JV4205'MULLINIX HOME.  IT IS SET FLUSH AND IS STAMPED DAY NO.1 1943.
 JV4205'
 JV4205'REFERENCE MARK NO.2 IS SET IN THE N END OF THE S STEPS OF THE
 JV4205'CHURCH AND IN THE SECOND STEP FROM THE BOTTOM.  IT IS STAMPED DAY
 JV4205'NO.2 1943.
 JV4205'
 JV4205'THE AZIMUTH MARK IS LOCATED ABOUT 0.3 MILE NW OF THE STATION.  IT
 JV4205'IS ON THE N SIDE OF A FARM ROAD, 15 FEET E OF THE FIRST POWERLINE
 JV4205'POLE E OF THE FARMYARD HEDGE.  IT PROJECTS 6 INCHES AND THE DISK
 JV4205'IS STAMPED DAY 1943.  TO REACH FROM THE STATION GO NORTHERLY
 JV4205'ON HIGHWAY 94 FOR 0.2 MILE TO A FARM LANE LEFT.  TURN LEFT AND GO
 JV4205'0.3 MILE TO THE AZIMUTH MARK ON THE RIGHT.
 JV4205'
 JV4205'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV4205'STATE HIGHWAY 94 IN THE VILLAGE OF LISBON GO NORTHERLY ON
 JV4205'HIGHWAY 94 FOR 3.9 MILES TO A T-INTERSECTION (STEM RIGHT) AT THE
 JV4205'METHODIST CHURCH IN THE VILLAGE OF DAY AND THE STATION ON THE
 JV4205'RIGHT.
 JV4205'
 JV4205'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT TAYLOR.
 JV4205'
 JV4205'A 77-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT BIRD.
 JV4205'
 JV4205'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT ELDER.
 JV4205'
 JV4205'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT SLACK.
 JV4205'
 JV4205'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT COOK.
 JV4205'
 JV4205'A 50-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT RIDGE.
 JV4205'
 JV4205'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4205
 JV4205                          STATION RECOVERY (1943)
 JV4205
 JV4205'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 JV4205'RECOVERED IN GOOD CONDITION.
 JV4205
 JV4205                          STATION RECOVERY (1982)
 JV4205
 JV4205'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1982
 JV4205'THE STATION MARK AND REFERENCE MARK ONE WERE RECOVERED AND FOUND IN
 JV4205'GOOD CONDITION.  REFERENCE MARK TWO AND THE AZIMUTH MARK WERE SEARCHED
 JV4205'FOR BUT NOT FOUND AND BELIEVED DESTROYED. A NEW REFERENCE MARK THREE
 JV4205'AND A NEW AZIMUTH MARK TWO WERE ESTABLISHED. THE DISTANCE AND
 JV4205'DIRECTION TO REFERENCE MARK ONE WERE WITHIN CLOSE AGREEMENT WITH THE
 JV4205'MOST RECENT INFORMATION AVAILABLE.
 JV4205'A COMPLETE NEW DESCRIPTION OF THIS POINT FOLLOWS.
 JV4205'THIS POINT IS LOCATED ABOUT 9.6 KM (5.95 MI) NORTHEAST OF MOUNT AIRY,
 JV4205'7.5 KM (4.65 MI) WEST-NORTHWEST OF SYKESVILLE AND 2.8 KM (1.75 MI)
 JV4205'NORTH OF WOODBINE.  OWNERSHIP--MR. B.C. MULLINIX, WOODBINE, MARYLAND.
 JV4205'TO REACH FROM THE POST OFFICE IN WOODBINE, GO NORTH ON WOODBINE ROAD
 JV4205'FOR 2.65 KM (1.65 MI) TO A T-INTERSECTION IN THE SMALL VILLAGE OF DAY
 JV4205'AND THE MARKER IN THE SOUTHEAST ANGLE OF THE INTERSECTION OF WOODBINE
 JV4205'ROAD AND HOODS ROAD.
 JV4205'THE DISK IS SET IN THE TOP OF THE 0.3 M (1.0 FT) MONUMENT WHICH IS
 JV4205'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 20.57 M (67.5 FT)
 JV4205'EAST-SOUTHEAST OF A POWERLINE POLE NUMBERED 101081, 15.09 M (49.5 FT)
 JV4205'EAST OF THE CENTER OF WOODBINE ROAD, 14.63 M (48.0 FT) SOUTH OF THE
 JV4205'CENTER OF HOODS MILL ROAD AND 10.91 M (35.8 FT) NORTHWEST OF A 28-INCH
 JV4205'OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7207 ***********************************************************************
 JV7207  CBN         -  This is a Cooperative Base Network Control Station.
 JV7207  DESIGNATION -  DAY
 JV7207  PID         -  JV7207
 JV7207  STATE/COUNTY-  MD/FREDERICK
 JV7207  COUNTRY     -  US
 JV7207  USGS QUAD   -  WALKERSVILLE (2016)
 JV7207
 JV7207                         *CURRENT SURVEY CONTROL
 JV7207  ______________________________________________________________________
 JV7207* NAD 83(2011) POSITION- 39 29 07.65458(N) 077 15 15.60584(W)   ADJUSTED
 JV7207* NAD 83(2011) ELLIP HT-   143.319 (meters)        (06/27/12)   ADJUSTED
 JV7207* NAD 83(2011) EPOCH   -  2010.00
 JV7207* NAVD 88 ORTHO HEIGHT -   175.852 (meters)      576.94  (feet) ADJUSTED
 JV7207  ______________________________________________________________________
 JV7207  GEOID HEIGHT    -        -32.512 (meters)                     GEOID18
 JV7207  NAD 83(2011) X  -  1,087,529.642 (meters)                     COMP
 JV7207  NAD 83(2011) Y  - -4,807,879.328 (meters)                     COMP
 JV7207  NAD 83(2011) Z  -  4,034,148.854 (meters)                     COMP
 JV7207  LAPLACE CORR    -          5.26  (seconds)                    DEFLEC18
 JV7207  DYNAMIC HEIGHT  -        175.758 (meters)      576.63  (feet) COMP
 JV7207  MODELED GRAVITY -    980,091.1   (mgal)                       NAVD 88
 JV7207
 JV7207  VERT ORDER      -  SECOND    CLASS I
 JV7207
 JV7207  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7207  Standards:
 JV7207         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7207            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7207  -------------------------------------------------------------------
 JV7207  NETWORK    0.73   1.37           0.33   0.26   0.70      0.02888129
 JV7207  -------------------------------------------------------------------
 JV7207  Click here for local accuracies and other accuracy information.
 JV7207
 JV7207.The horizontal coordinates were established by GPS observations
 JV7207.and adjusted by the National Geodetic Survey in June 2012.
 JV7207
 JV7207.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7207.been affixed to the stable North American tectonic plate. See 
 JV7207.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7207
 JV7207.The horizontal coordinates are valid at the epoch date displayed above
 JV7207.which is a decimal equivalence of Year/Month/Day.
 JV7207
 JV7207.The orthometric height was determined by differential leveling and
 JV7207.adjusted by the NATIONAL GEODETIC SURVEY
 JV7207.in November 2003.
 JV7207
 JV7207.No vertical observational check was made to the station.
 JV7207
 JV7207.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7207.GEOID18 height accuracy estimate available here.
 JV7207
 JV7207.Click photographs - Photos may exist for this station.
 JV7207
 JV7207.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7207
 JV7207.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7207
 JV7207.The ellipsoidal height was determined by GPS observations
 JV7207.and is referenced to NAD 83.
 JV7207
 JV7207.The dynamic height is computed by dividing the NAVD 88
 JV7207.geopotential number by the normal gravity value computed on the
 JV7207.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7207.degrees latitude (g = 980.6199 gals.).
 JV7207
 JV7207.The modeled gravity was interpolated from observed gravity values.
 JV7207
 JV7207. The following values were computed from the NAD 83(2011) position.
 JV7207
 JV7207;                    North         East     Units Scale Factor Converg.
 JV7207;SPC MD       -   201,931.033   378,119.112   MT  1.00000640   -0 09 34.7
 JV7207;SPC MD       -   662,502.06  1,240,545.79   sFT  1.00000640   -0 09 34.7
 JV7207;UTM  18      - 4,373,076.800   306,124.445   MT  1.00006280   -1 26 02.2
 JV7207
 JV7207!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7207!SPC MD       -   0.99997752  x   1.00000640  =   0.99998392
 JV7207!UTM  18      -   0.99997752  x   1.00006280  =   1.00004031
 JV7207
 JV7207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0612473076(NAD 83)
 JV7207
 JV7207                          SUPERSEDED SURVEY CONTROL
 JV7207
 JV7207  NAD 83(2007)-  39 29 07.65487(N)    077 15 15.60668(W) AD(2002.00) 0
 JV7207  ELLIP H (02/10/07)  143.335  (m)                       GP(2002.00)    
 JV7207  NAD 83(1991)-  39 29 07.65484(N)    077 15 15.60676(W) AD(       ) A
 JV7207  ELLIP H (02/12/02)  143.342  (m)                       GP(       ) 4 1
 JV7207  NAD 83(1991)-  39 29 07.65596(N)    077 15 15.60803(W) AD(       ) 1
 JV7207  ELLIP H (02/09/94)  143.254  (m)                       GP(       ) 4 1
 JV7207  NAVD 88 (02/09/94)  175.8    (m)  GEOID93  model used  GPS OBS        
 JV7207
 JV7207.Superseded values are not recommended for survey control.
 JV7207
 JV7207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7207.See file dsdata.pdf to determine how the superseded data were derived.
 JV7207
 JV7207_MARKER: DD = SURVEY DISK
 JV7207_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7207_STAMPING: DAY 1993
 JV7207_MARK LOGO: MD-021
 JV7207_PROJECTION: FLUSH
 JV7207_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7207+STABILITY: SURFACE MOTION
 JV7207_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7207+SATELLITE: SATELLITE OBSERVATIONS - August 03, 2017
 JV7207
 JV7207  HISTORY     - Date     Condition        Report By
 JV7207  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7207  HISTORY     - 20000327 GOOD             MDSHA
 JV7207  HISTORY     - 20010606 GOOD             MDSHA
 JV7207  HISTORY     - 20010727 GOOD             DMW
 JV7207  HISTORY     - 20160520 GOOD             BASE9
 JV7207  HISTORY     - 20170326 GOOD             GEOCAC
 JV7207  HISTORY     - 20170803 GOOD             NGS
 JV7207
 JV7207                          STATION DESCRIPTION
 JV7207
 JV7207'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7207'FROM THE INTERSECTION OF MD RTE 550 AND MD RTE 26 (LIBERTY ROAD) IN
 JV7207'LIBERTYTOWN MD, PROCEED WEST ON RTE 26 TO THE ITS INTERSECTION WITH
 JV7207'0.2 MILES (0.3 KM) TO THE INTERSECTION WITH DAYSVILLE ROAD. RIGHT ON
 JV7207'DAYSVILLE ROAD 0.2 MILES (0.3 KM) TO STATION ON THE LEFT ADJACENT TO
 JV7207'THE LIBERTY ELEMENTARY SCHOOL PROPERTY. STATION IS 2 FEET (0.6 M)
 JV7207'NORTH OF A CHAINLINK FENCE FOR THE BASEBALL FIELD, 19 FEET (5.8 M)
 JV7207'SOUTH OF THE EDGE OF THE ROAD AND 72 FEET (21.9 M) EAST OF A POWER
 JV7207'POLE. STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND
 JV7207'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7207
 JV7207                          STATION RECOVERY (2000)
 JV7207
 JV7207'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV7207'THE STATION WAS RECOVERED IN GOOD CONDITION, A NEW DESCRIPTION
 JV7207'FOLLOWS.  THE STATION IS LOCATED ABOUT 9.6 MILES (15.4 KM) NORTHEAST
 JV7207'OF FREDERICK, 9.2 MILES (14.8 KM) NORTHWEST OF MOUNT AIRY AND 6.2
 JV7207'MILES (10.0 KM) NORTH-NORTHEAST OF NEW MARKET.  TO REACH THE STATION
 JV7207'FROM THE INTERSECTION OF MARYLAND ROUTE 26 AND MARYLAND ROUTE 75 IN
 JV7207'LIBERTYTOWN, GO WEST ON MARYLAND ROUTE 26 FOR 0.55 MILES (0.89 KM) TO
 JV7207'DAYSVILLE ROAD ON THE RIGHT.  TURN RIGHT ONTO DAYSVILLE ROAD AND GO
 JV7207'0.25 MILES (0.40 KM) TO THE STATION ON THE LEFT IN FRONT OF THE
 JV7207'LIBERTY ELEMENTARY SCHOOL BASEBALL DIAMOND.  THE STATION IS A
 JV7207'FREDERICK COUNTY DISK SET IN THE TOP OF A ROUND CONCRETE MONUMENT
 JV7207'WHICH IS FLUSH WITH THE GROUND.  IT IS 29.5 FEET (9.0 M) SOUTHWEST OF
 JV7207'THE CENTER LINE OF THE ROAD, 72.5 FEET (22.1 M) SOUTHEAST OF C/P POLE
 JV7207'160, 143.0 FEET (43.6 M) NORTHWEST OF C/P POLE 161, AND 2.0 FEET (0.6
 JV7207'M) NORTHWEST OF A CHAIN LINK FENCE.
 JV7207
 JV7207                          STATION RECOVERY (2001)
 JV7207
 JV7207'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV7207'RECOVERED AS DESCRIBED.
 JV7207
 JV7207                          STATION RECOVERY (2001)
 JV7207
 JV7207'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV7207'RECOVERED IN GOOD CONDITION.
 JV7207
 JV7207                          STATION RECOVERY (2016)
 JV7207
 JV7207'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 JV7207'RECOVERED IN GOOD CONDITION.
 JV7207
 JV7207                          STATION RECOVERY (2017)
 JV7207
 JV7207'RECOVERY NOTE BY GEOCACHING 2017 (LJB)
 JV7207'RECOVERED FOR THE 2017 GPS ON BENCHMARKS CAMPAIGN
 JV7207
 JV7207                          STATION RECOVERY (2017)
 JV7207
 JV7207'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV7207'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6567 ***********************************************************************
 HV6567  DESIGNATION -  DAY 1908
 HV6567  PID         -  HV6567
 HV6567  STATE/COUNTY-  MD/ST MARYS
 HV6567  COUNTRY     -  US
 HV6567  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6567
 HV6567                         *CURRENT SURVEY CONTROL
 HV6567  ______________________________________________________________________
 HV6567* NAD 83(1993) POSITION- 38 06 18.01984(N) 076 25 17.44975(W)   ADJUSTED
 HV6567* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6567  ______________________________________________________________________
 HV6567  GEOID HEIGHT    -        -34.914 (meters)                     GEOID18
 HV6567  LAPLACE CORR    -         -6.18  (seconds)                    DEFLEC18
 HV6567  HORZ ORDER      -  THIRD
 HV6567
 HV6567.The horizontal coordinates were established by classical geodetic methods
 HV6567.and adjusted by the National Geodetic Survey in November 1994.
 HV6567
 HV6567.The orthometric height was scaled from a topographic map.
 HV6567
 HV6567.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6567.GEOID18 height accuracy estimate available here.
 HV6567
 HV6567.Click photographs - Photos may exist for this station.
 HV6567
 HV6567.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6567
 HV6567. The following values were computed from the NAD 83(1993) position.
 HV6567
 HV6567;                    North         East     Units Scale Factor Converg.
 HV6567;SPC MD       -    48,818.762   450,739.002   MT  1.00003964   +0 21 47.1
 HV6567;SPC MD       -   160,166.22  1,478,799.54   sFT  1.00003964   +0 21 47.1
 HV6567;SPC VA N     - 2,050,718.234 3,682,280.202   MT  0.99998812   +1 17 50.0
 HV6567;SPC VA N     - 6,728,064.74 12,080,947.63   sFT  0.99998812   +1 17 50.0
 HV6567;SPC VA S     - 1,198,627.843 3,682,288.349   MT  1.00002818   +1 15 41.3
 HV6567;SPC VA S     - 3,932,498.18 12,080,974.36   sFT  1.00002818   +1 15 41.3
 HV6567;UTM  18      - 4,218,419.884   375,369.974   MT  0.99979130   -0 52 38.4
 HV6567
 HV6567!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6567!SPC MD       -   1.00000552  x   1.00003964  =   1.00004516
 HV6567!SPC VA N     -   1.00000552  x   0.99998812  =   0.99999364
 HV6567!SPC VA S     -   1.00000552  x   1.00002818  =   1.00003370
 HV6567!UTM  18      -   1.00000552  x   0.99979130  =   0.99979682
 HV6567
 HV6567:                Primary Azimuth Mark                     Grid Az
 HV6567:SPC MD       -  HALL                                     133 14 08.6
 HV6567:SPC VA N     -  HALL                                     132 18 05.7
 HV6567:SPC VA S     -  HALL                                     132 20 14.4
 HV6567:UTM  18      -  HALL                                     134 28 34.1
 HV6567
 HV6567_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7536918419(NAD 83)
 HV6567
 HV6567|---------------------------------------------------------------------|
 HV6567| PID    Reference Object                     Distance      Geod. Az  |
 HV6567|                                                           dddmmss.s |
 HV6567| HV6529 HALL                                APPROX. 7.2 KM 1333555.7 |
 HV6567|---------------------------------------------------------------------|
 HV6567
 HV6567                          SUPERSEDED SURVEY CONTROL
 HV6567
 HV6567  NAD 83(1991)-  38 06 18.01870(N)    076 25 17.45265(W) AD(       ) 3
 HV6567  NAD 83(1986)-  38 06 18.02020(N)    076 25 17.46629(W) AD(       ) 3
 HV6567  NAD 27      -  38 06 17.58900(N)    076 25 18.68300(W) AD(       ) 3
 HV6567  USSD        -  38 06 17.96900(N)    076 25 18.39700(W) AD(       ) 3
 HV6567
 HV6567.Superseded values are not recommended for survey control.
 HV6567
 HV6567.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6567.See file dsdata.pdf to determine how the superseded data were derived.
 HV6567
 HV6567_MARKER: H = DRILL HOLE
 HV6567_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6567_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6567+STABILITY: SURFACE MOTION
 HV6567
 HV6567  HISTORY     - Date     Condition        Report By
 HV6567  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6567  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6567  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6567
 HV6567                          STATION DESCRIPTION
 HV6567
 HV6567'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6567'STATION IS ON THE NORTHEASTERN SHORE OF POTOMAC RIVER, ABOUT
 HV6567'1/4 MILE NW OF KITTS POINT BETWEEN ENTRANCE TO ST. MARYS RIVER
 HV6567'AND SMITH CREEK.  STATION IS ON SMALL ISLAND OF FIRM GROUND ON
 HV6567'A MARSH POINT ABOUT 5 FEET ABOVE HIGH WATER, 3 YARDS E OF
 HV6567'SHORE, 20 YARDS NE OF SHORE, 18 YARDS N OF EXTREME END OF
 HV6567'POINT, AND 150 YARDS S OF LARGE LONE DEAD TREE.
 HV6567'
 HV6567'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV6567'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6567'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6567'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK
 HV6567'IN TOP OF POST.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV6567'REFERENCE ARE AS FOLLOWS--NEAR PEAK OF ROOF OF 2 1/2-STORY
 HV6567'HOUSE, 3 MILES, N 67 DEG 14 MIN W.  NEAR PEAK OF ROOF OF BRICK
 HV6567'HOUSE, 3-1/8 MILES, N 40 DEG 53 MIN W.  TALL PINE ON KITTS
 HV6567'POINT, 150 YARDS, N 15 DEG 49 MIN W.  CHIMNEY OF OLD HOUSE,
 HV6567'1/8 MILE, N 28 DEG 38 MIN E.  NEAR PEAK OF ROOF OF
 HV6567'TOBACCO HOUSE, 1/8 MILE, N 70 DEG 14 MIN E.  NEAR PEAK OF ROOF
 HV6567'BETWEEN TWO CHIMNEYS, 1/4 MILE, S 88 DEG 30 MIN E.
 HV6567
 HV6567                          STATION RECOVERY (1942)
 HV6567
 HV6567'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV6567'STATION LOST, ERODED AWAY.
 HV6567
 HV6567                          STATION RECOVERY (1942)
 HV6567
 HV6567'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6567'THIS STATION WAS SEARCHED FOR THOROUGHLY.  ACCORDING TO LOCAL
 HV6567'INFORMATION THE SHORE LINE HAS MOVED BACK ABOUT 200 FEET IN
 HV6567'THE LAST 20 YEARS.  IT IS RECOMMENDED THAT THIS STATION
 HV6567'BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6571 ***********************************************************************
 JV6571  DESIGNATION -  DAY AZ MK 2
 JV6571  PID         -  JV6571
 JV6571  STATE/COUNTY-  MD/CARROLL
 JV6571  COUNTRY     -  US
 JV6571  USGS QUAD   -  WINFIELD (2016)
 JV6571
 JV6571                         *CURRENT SURVEY CONTROL
 JV6571  ______________________________________________________________________
 JV6571* NAD 83(1991) POSITION- 39 23 24.47256(N) 077 03 32.76336(W)   NO CHECK
 JV6571* NAVD 88 ORTHO HEIGHT -   235.    (meters)      771.    (feet) SCALED
 JV6571  ______________________________________________________________________
 JV6571  GEOID HEIGHT    -        -31.908 (meters)                     GEOID18
 JV6571  LAPLACE CORR    -          0.17  (seconds)                    DEFLEC18
 JV6571  HORZ ORDER      -  THIRD
 JV6571
 JV6571.The horizontal coordinates were established by classical geodetic methods
 JV6571.and adjusted by the National Geodetic Survey in January 1992.
 JV6571
 JV6571.No horizontal observational check was made to the station.
 JV6571
 JV6571.The orthometric height was scaled from a topographic map.
 JV6571
 JV6571.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6571.GEOID18 height accuracy estimate available here.
 JV6571
 JV6571.Click photographs - Photos may exist for this station.
 JV6571
 JV6571.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6571
 JV6571. The following values were computed from the NAD 83(1991) position.
 JV6571
 JV6571;                    North         East     Units Scale Factor Converg.
 JV6571;SPC MD       -   191,318.502   394,908.583   MT  0.99999008   -0 02 13.5
 JV6571;SPC MD       -   627,684.12  1,295,629.24   sFT  0.99999008   -0 02 13.5
 JV6571;UTM  18      - 4,362,093.864   322,674.615   MT  0.99998717   -1 18 25.3
 JV6571
 JV6571!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6571!SPC MD       -   0.99996808  x   0.99999008  =   0.99995817
 JV6571!UTM  18      -   0.99996808  x   0.99998717  =   0.99995526
 JV6571
 JV6571_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2267462093(NAD 83)
 JV6571
 JV6571                          SUPERSEDED SURVEY CONTROL
 JV6571
 JV6571  NAD 83(1986)-  39 23 24.47191(N)    077 03 32.77136(W) AD(       ) 3
 JV6571
 JV6571.Superseded values are not recommended for survey control.
 JV6571
 JV6571.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6571.See file dsdata.pdf to determine how the superseded data were derived.
 JV6571
 JV6571_MARKER: DZ = AZIMUTH MARK DISK
 JV6571_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6571_STAMPING: DAY 1943 NO 2 1982
 JV6571_MARK LOGO: NGS
 JV6571_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6571_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6571+STABILITY: SURFACE MOTION
 JV6571
 JV6571  HISTORY     - Date     Condition        Report By
 JV6571  HISTORY     - 1982     MONUMENTED       NGS
 JV6571
 JV6571                          STATION DESCRIPTION
 JV6571
 JV6571'DESCRIBED BY NATIONAL GEODETIC SURVEY 1982
 JV6571'THIS POINT IS LOCATED ABOUT 9.6 KM (5.95 MI) NORTHEAST OF MOUNT AIRY,
 JV6571'7.5 KM (4.65 MI) WEST-NORTHWEST OF SYKESVILLE AND 3 KM (1.85 MI) NORTH
 JV6571'OF WOODBINE.  OWNERSHIP--MR. SCHWARTZ, 6700 WOODBINE ROAD, WOODBINE,
 JV6571'MARYLAND.  TELEPHONE NUMBER 301-795-6228.
 JV6571'TO REACH FROM THE POST OFFICE IN WOODBINE, GO NORTH ON WOODBINE ROAD
 JV6571'FOR 2.65 KM (1.65 MI) TO THE SMALL VILLAGE OF DAY.  CONTINUE NORTH ON
 JV6571'WOODBINE ROAD FOR 0.25 KM (0.15 MI) TO A SIDE ROAD LEFT BETWEEN TWO
 JV6571'STONE PILLARS.  TURN LEFT AND GO NORTHWEST ON A GRAVELED ROAD FOR 0.25
 JV6571'KM (0.15 MI) TO THE MARK ON THE LEFT.
 JV6571'THE DISK IS SET IN THE TOP OF THE 0.25 M (0.8 FT) MONUMENT WHICH IS
 JV6571'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 5.0 M (16.4 FT) SOUTH OF
 JV6571'THE CENTER OF THE GRAVELED FARM ROAD, 7.3 M (24.0 FT) EAST OF A
 JV6571'24-INCH CHERRY TREE, 3.2 M (10.5 FT) EAST OF THE CENTER OF A METAL
 JV6571'GATE AND 0.5 M (1.6 FT) EAST-NORTHEAST OF A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5345 ***********************************************************************
 JV5345  DESIGNATION -  DAYS
 JV5345  PID         -  JV5345
 JV5345  STATE/COUNTY-  MD/HARFORD
 JV5345  COUNTRY     -  US
 JV5345  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5345
 JV5345                         *CURRENT SURVEY CONTROL
 JV5345  ______________________________________________________________________
 JV5345* NAD 83(1991) POSITION- 39 19 44.77376(N) 076 17 55.49112(W)   ADJUSTED
 JV5345* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5345  ______________________________________________________________________
 JV5345  GEOID HEIGHT    -        -33.187 (meters)                     GEOID18
 JV5345  LAPLACE CORR    -         -2.32  (seconds)                    DEFLEC18
 JV5345  HORZ ORDER      -  THIRD
 JV5345
 JV5345.The horizontal coordinates were established by classical geodetic methods
 JV5345.and adjusted by the National Geodetic Survey in January 1992.
 JV5345
 JV5345.The orthometric height was scaled from a topographic map.
 JV5345
 JV5345.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5345.GEOID18 height accuracy estimate available here.
 JV5345
 JV5345.Click photographs - Photos may exist for this station.
 JV5345
 JV5345.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5345
 JV5345. The following values were computed from the NAD 83(1991) position.
 JV5345
 JV5345;                    North         East     Units Scale Factor Converg.
 JV5345;SPC MD       -   184,773.772   460,462.826   MT  0.99998109   +0 26 24.5
 JV5345;SPC MD       -   606,211.95  1,510,701.79   sFT  0.99998109   +0 26 24.5
 JV5345;UTM  18      - 4,354,102.763   388,060.101   MT  0.99975428   -0 49 23.5
 JV5345
 JV5345!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5345!SPC MD       -   1.00000525  x   0.99998109  =   0.99998634
 JV5345!UTM  18      -   1.00000525  x   0.99975428  =   0.99975952
 JV5345
 JV5345:                Primary Azimuth Mark                     Grid Az
 JV5345:SPC MD       -  RICKETTS                                 180 56 02.4
 JV5345:UTM  18      -  RICKETTS                                 182 11 50.4
 JV5345
 JV5345_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8806054102(NAD 83)
 JV5345
 JV5345|---------------------------------------------------------------------|
 JV5345| PID    Reference Object                     Distance      Geod. Az  |
 JV5345|                                                           dddmmss.s |
 JV5345| CA9326 DAYS RM 2                            19.413 METERS 11922     |
 JV5345| JV5344 RICKETTS                            APPROX. 3.0 KM 1812226.9 |
 JV5345| CA9325 DAYS RM 1                            15.822 METERS 30056     |
 JV5345|---------------------------------------------------------------------|
 JV5345
 JV5345                          SUPERSEDED SURVEY CONTROL
 JV5345
 JV5345  NAD 83(1986)-  39 19 44.76774(N)    076 17 55.49899(W) AD(       ) 3
 JV5345  NAD 27      -  39 19 44.38200(N)    076 17 56.65300(W) AD(       ) 3
 JV5345
 JV5345.Superseded values are not recommended for survey control.
 JV5345
 JV5345.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5345.See file dsdata.pdf to determine how the superseded data were derived.
 JV5345
 JV5345_MARKER: DS = TRIANGULATION STATION DISK
 JV5345_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5345_STAMPING: DAYS 1934
 JV5345_MARK LOGO: CGS
 JV5345_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5345+STABILITY: SURFACE MOTION
 JV5345
 JV5345  HISTORY     - Date     Condition        Report By
 JV5345  HISTORY     - 1934     MONUMENTED       CGS
 JV5345  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5345
 JV5345                          STATION DESCRIPTION
 JV5345
 JV5345'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5345'ON THE E SHORE OF THE GUNPOWDER RIVER ABOUT 1.6 MILES N ON THE
 JV5345'SOUTHERN END OF GUNPOWDER NECK AND ON DAYS POINT.  THE STATION IS
 JV5345'ON A SAND BEACH ABOUT 112 FEET S OF HIGH-WATER LINE AND 10 FEET E
 JV5345'OF HIGH-WATER LINE.
 JV5345'
 JV5345'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS AS
 JV5345'DESCRIBED IN NOTES 1A AND 11A, SET IN 8-INCH SQUARE CONCRETE
 JV5345'BLOCKS 36 INCHES DEEP AND PROJECTING 2 INCHES ABOVE THE GROUND.
 JV5345'STATION AND REFERENCE MARKS ARE APPROXIMATELY IN LINE IN A N AND S
 JV5345'DIRECTION.
 JV5345'
 JV5345'GUNPOWDER NECK IS GOVERNMENT PROPERTY USED FOR TESTING ARTILLERY
 JV5345'EQUIPMENT AND PERMISSION IS REQUIRED BEFORE LANDING OR ENTERING ON
 JV5345'THIS PROPERTY.  OBTAIN PERMISSION AT EDGEWOOD ARSENAL OR PHONE
 JV5345'EDGEWOOD 1,000.
 JV5345'
 JV5345'TO REACH STATION FROM BALTIMORE, GO N ON PHILADELPHIA ROAD 21
 JV5345'MILES.  TURN RIGHT ON FORT HOYLE ROAD AND CONTINUE 2-1/2 MILES TO
 JV5345'EDGEWOOD ARSENAL.
 JV5345'
 JV5345'AT EDGEWOOD ARSENAL OBTAIN PERMISSION AT HEADQUARTERS TO CONTINUE
 JV5345'ON GUNPOWDER NECK.  FROM HEADQUARTERS TURN S ON RICKETTS POINT
 JV5345'ROAD AND CONTINUE STRAIGHT ON DIRT AND SLAG ROAD 7.3 MILES TO AN
 JV5345'OLD HOUSE.  TAKE GRASS ROAD ON N SIDE OF HOUSE AND GO W TO SAND
 JV5345'BEACH TO DAYS POINT.
 JV5345
 JV5345                          STATION RECOVERY (1961)
 JV5345
 JV5345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5345'STATION AND REFERENCE MARKS 1 AND 2 WERE ALL FOUND DESTROYED.  ALL
 JV5345'THREE MONUMENTS ARE ON THEIR SIDES IN THE MARSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5350 ***********************************************************************
 JV5350  DESIGNATION -  DAYS POINT 1898
 JV5350  PID         -  JV5350
 JV5350  STATE/COUNTY-  MD/HARFORD
 JV5350  COUNTRY     -  US
 JV5350  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5350
 JV5350                         *CURRENT SURVEY CONTROL
 JV5350  ______________________________________________________________________
 JV5350* NAD 83(1991) POSITION- 39 19 44.27418(N) 076 17 55.28019(W)   ADJUSTED
 JV5350* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5350  ______________________________________________________________________
 JV5350  GEOID HEIGHT    -        -33.187 (meters)                     GEOID18
 JV5350  LAPLACE CORR    -         -2.31  (seconds)                    DEFLEC18
 JV5350  HORZ ORDER      -  THIRD
 JV5350
 JV5350.The horizontal coordinates were established by classical geodetic methods
 JV5350.and adjusted by the National Geodetic Survey in January 1992.
 JV5350
 JV5350.The orthometric height was scaled from a topographic map.
 JV5350
 JV5350.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5350.GEOID18 height accuracy estimate available here.
 JV5350
 JV5350.Click photographs - Photos may exist for this station.
 JV5350
 JV5350.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5350
 JV5350. The following values were computed from the NAD 83(1991) position.
 JV5350
 JV5350;                    North         East     Units Scale Factor Converg.
 JV5350;SPC MD       -   184,758.405   460,467.996   MT  0.99998107   +0 26 24.6
 JV5350;SPC MD       -   606,161.53  1,510,718.75   sFT  0.99998107   +0 26 24.6
 JV5350;UTM  18      - 4,354,087.289   388,064.929   MT  0.99975427   -0 49 23.4
 JV5350
 JV5350!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5350!SPC MD       -   1.00000525  x   0.99998107  =   0.99998632
 JV5350!UTM  18      -   1.00000525  x   0.99975427  =   0.99975951
 JV5350
 JV5350:                Primary Azimuth Mark                     Grid Az
 JV5350:SPC MD       -  RICKETT POINT 2 1898                     176 00 57.3
 JV5350:UTM  18      -  RICKETT POINT 2 1898                     177 16 45.3
 JV5350
 JV5350_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8806454087(NAD 83)
 JV5350
 JV5350|---------------------------------------------------------------------|
 JV5350| PID    Reference Object                     Distance      Geod. Az  |
 JV5350|                                                           dddmmss.s |
 JV5350| JV5353 RICKETT POINT 2 1898                APPROX. 3.1 KM 1762721.9 |
 JV5350| JV5343 WEIR                                APPROX. 4.3 KM 2310216.9 |
 JV5350| JV5357 WHITE OAK                           APPROX. 3.0 KM 2591733.3 |
 JV5350|---------------------------------------------------------------------|
 JV5350
 JV5350                          SUPERSEDED SURVEY CONTROL
 JV5350
 JV5350  NAD 83(1986)-  39 19 44.26846(N)    076 17 55.28799(W) AD(       ) 3
 JV5350  NAD 27      -  39 19 43.88700(N)    076 17 56.45000(W) AD(       ) 3
 JV5350  USSD        -  39 19 44.23900(N)    076 17 56.29400(W) AD(       ) 3
 JV5350
 JV5350.Superseded values are not recommended for survey control.
 JV5350
 JV5350.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5350.See file dsdata.pdf to determine how the superseded data were derived.
 JV5350
 JV5350_MARKER: N = NAIL
 JV5350_SETTING: 0 = UNSPECIFIED SETTING
 JV5350_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5350
 JV5350  HISTORY     - Date     Condition        Report By
 JV5350  HISTORY     - 1898     MONUMENTED       CGS
 JV5350  HISTORY     - 1934     SEE DESCRIPTION  CGS
 JV5350  HISTORY     - 1974     MARK NOT FOUND   NGS
 JV5350
 JV5350                          STATION DESCRIPTION
 JV5350
 JV5350'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JV5350'ON EASTERN SIDE OF GUNPOWDER RIVER, ON DAYS POINT, A MARSHY
 JV5350'POINT, 24 FEET FROM SHORE TO S, AND 125 FEET FROM END OF POINT
 JV5350'TO W.  MARKED BY TWO 4-INCH DRAIN TILES PLACED ONE ABOVE THE OTHER
 JV5350'AND A NAIL IN A PINE STUB EXTENDING TO THE SURFACE OF THE GROUND.
 JV5350
 JV5350                          STATION RECOVERY (1934)
 JV5350
 JV5350'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5350'THIS STATION WAS SEARCHED FOR WITHOUT SUCCESS.  MUCH OF THE POINT
 JV5350'HAS BEEN WASHED AWAY.  IT IS RECOMMENDED THAT THE STATION BE
 JV5350'REPORTED AS LOST.
 JV5350'
 JV5350'A NEW TRIANGULATION STATION NAMED DAYS 1934 WAS PLACED ON THIS
 JV5350'POINT OF LAND.
 JV5350
 JV5350                          STATION RECOVERY (1974)
 JV5350
 JV5350'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RDB)
 JV5350'STATION WAS NOT RECOVERED, AFTER AN EXTENSIVE SEARCH OF THE AREA
 JV5350'WAS MADE.
 JV5350'
 JV5350'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN AT EDGEWOOD
 JV5350'ARSENAL, EDGEWOOD, MD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3569 ***********************************************************************
 JV3569  DESIGNATION -  DAYSDAIR 2
 JV3569  PID         -  JV3569
 JV3569  STATE/COUNTY-  MD/WASHINGTON
 JV3569  COUNTRY     -  US
 JV3569  USGS QUAD   -  FUNKSTOWN (2017)
 JV3569
 JV3569                         *CURRENT SURVEY CONTROL
 JV3569  ______________________________________________________________________
 JV3569* NAD 83(1991) POSITION- 39 36 44.72830(N) 077 41 22.77488(W)   NO CHECK
 JV3569* NAVD 88 ORTHO HEIGHT -   169.83  (meters)      557.2   (feet) RESET
 JV3569  ______________________________________________________________________
 JV3569  GEOID HEIGHT    -        -34.016 (meters)                     GEOID18
 JV3569  LAPLACE CORR    -          5.92  (seconds)                    DEFLEC18
 JV3569  HORZ ORDER      -  THIRD
 JV3569  VERT ORDER      -  THIRD
 JV3569
 JV3569.The horizontal coordinates were established by classical geodetic methods
 JV3569.and adjusted by the National Geodetic Survey in January 1992.
 JV3569
 JV3569.No horizontal observational check was made to the station.
 JV3569
 JV3569.The orthometric height was computed from unverified reset data.
 JV3569
 JV3569.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3569.GEOID18 height accuracy estimate available here.
 JV3569
 JV3569.Click photographs - Photos may exist for this station.
 JV3569
 JV3569.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3569
 JV3569. The following values were computed from the NAD 83(1991) position.
 JV3569
 JV3569;                    North         East     Units Scale Factor Converg.
 JV3569;SPC MD       -   216,220.943   340,774.334   MT  1.00003245   -0 25 58.3
 JV3569;SPC MD       -   709,384.88  1,118,023.79   sFT  1.00003245   -0 25 58.3
 JV3569;SPC PA S     -    30,990.985   605,182.045   MT  1.00006566   +0 02 20.9
 JV3569;SPC PA S     -   101,676.26  1,985,501.43   sFT  1.00006566   +0 02 20.9
 JV3569;UTM  18      - 4,388,198.432   269,102.685   MT  1.00025643   -1 42 56.4
 JV3569
 JV3569!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3569!SPC MD       -   0.99997869  x   1.00003245  =   1.00001114
 JV3569!SPC PA S     -   0.99997869  x   1.00006566  =   1.00004435
 JV3569!UTM  18      -   0.99997869  x   1.00025643  =   1.00023512
 JV3569
 JV3569:                Primary Azimuth Mark                     Grid Az
 JV3569:SPC MD       -  DAYSDAIR 2 AZ MK                         331 45 18.3
 JV3569:SPC PA S     -  DAYSDAIR 2 AZ MK                         331 16 59.1
 JV3569:UTM  18      -  DAYSDAIR 2 AZ MK                         333 02 16.4
 JV3569
 JV3569_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6910288198(NAD 83)
 JV3569
 JV3569|---------------------------------------------------------------------|
 JV3569| PID    Reference Object                     Distance      Geod. Az  |
 JV3569|                                                           dddmmss.s |
 JV3569| JV3561 DAYSDAIR                             19.480 METERS 15850     |
 JV3569| JV3567 DAYSDAIR 2 RM 5                      15.415 METERS 28148     |
 JV3569| JV4692 HAGERSTOWN VICTOR PROD CO TANK      APPROX. 3.4 KM 2932014.9 |
 JV3569| JV4705 HAGERSTOWN RADIO STA WARK MAST      APPROX. 2.4 KM 3113438.1 |
 JV3569| JV4710 HAGERSTOWN ST JOHNS EPIS CH         APPROX. 4.6 KM 3172621.0 |
 JV3569| JV4715 HAGERSTOWN ST JOHNS LUTH CH         APPROX. 4.2 KM 3181019.2 |
 JV3569| JV3568 DAYSDAIR 2 RM 6                      67.528 METERS 33116     |
 JV3569| CJ9632 DAYSDAIR 2 AZ MK                                   3311920.0 |
 JV3569|---------------------------------------------------------------------|
 JV3569
 JV3569                          SUPERSEDED SURVEY CONTROL
 JV3569
 JV3569  NAD 83(1986)-  39 36 44.72827(N)    077 41 22.78523(W) AD(       ) 3
 JV3569  NAD 27      -  39 36 44.37706(N)    077 41 23.80726(W) AD(       ) 3
 JV3569  NGVD 29 (??/??/??)  170.03   (m)          557.8    (f) RESET       3  
 JV3569  NGVD 29             170.01   (m)          557.8    (f) LEVELING    3  
 JV3569
 JV3569.Superseded values are not recommended for survey control.
 JV3569
 JV3569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3569.See file dsdata.pdf to determine how the superseded data were derived.
 JV3569
 JV3569_MARKER: DS = TRIANGULATION STATION DISK
 JV3569_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3569_STAMPING: DAYSDAIR 2 1970
 JV3569_MARK LOGO: CGS
 JV3569_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3569+STABILITY: SURFACE MOTION
 JV3569
 JV3569  HISTORY     - Date     Condition        Report By
 JV3569  HISTORY     - 1970     MONUMENTED       NGS
 JV3569  HISTORY     - 1970     GOOD             NGS
 JV3569
 JV3569                          STATION DESCRIPTION
 JV3569
 JV3569'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (LFS)
 JV3569'THE STATION IS LOCATED ABOUT 2.75 MILES SOUTHEAST OF THE CENTER OF
 JV3569'HAGERSTOWN, 1.0 MILE EAST OF FUNKSTOWN, 0.95 MILE NORTH-NORTHWEST
 JV3569'OF THE INTERSECTION OF HIGHWAYS U.S. 40 AND I-70.  IT IS ON THE
 JV3569'NORTHEAST SIDE OF U.S. HIGHWAY 40 AND IN FRONT OF MR. SAM
 JV3569'H. TURNERS HOME AND FURNITURE STORE.  72 FEET SOUTH-SOUTHWEST OF
 JV3569'THE NORTHWEST CORNER OF BUILDING, 66 FEET SOUTHEAST OF
 JV3569'CENTERLINE OF DRIVEWAY, 64 FEET EAST OF THE CENTERLINE OF NORTH
 JV3569'BOUND TRAFFIC LANES OF U.S. HIGHWAY 40, 52 FEET SOUTHWEST OF
 JV3569'NORTHWEST CORNER OF PORCH, 49.5 FEET WEST-SOUTHWEST OF
 JV3569'SOUTHWEST CORNER OF PORCH, AND 31 FEET SOUTH OF TURNERS
 JV3569'DECORATING SIGN AND POST.  STATION IS ON PROPERTY OF MARYLAND
 JV3569'STATE HIGHWAY RIGHT-OF-WAY AND IN LAWN KEPT UP BY MR. TURNER.
 JV3569'
 JV3569'THE STATION MARK IS PRESENTLY FLUSH WITH SURFACE OF LAWN.  HOWEVER,
 JV3569'IT MAY BE COVERED WITH TWO TO FOUR INCHES OF TOP SOIL AT A LATER
 JV3569'DATE.  THE DISK IS STAMPED DAYSDAIR 2 1970.
 JV3569'
 JV3569'REFERENCE MARK NO. 5 IS 79 FEET SOUTHWEST OF THE NORTHWEST
 JV3569'CORNER OF TURNERS HOUSE AND SHOP, 47 FEET WEST-SOUTHWEST OF
 JV3569'DECORATING SIGN AND POST, 25.5 FEET SOUTH OF THE CENTERLINE OF
 JV3569'DRIVEWAY, 23 FEET EAST-NORTHEAST OF THE CENTERLINE OF NORTH BOUND
 JV3569'TRAFFIC LANES OF U.S. HIGHWAY 40, AND IS 2 FEET SOUTHEAST OF A
 JV3569'MAIL BOX.  THE MARK IS FLUSH WITH GROUND AND THE DISK IS
 JV3569'STAMPED DAYSDAIR 2 NO 5 1970.
 JV3569'
 JV3569'REFERENCE MARK NO. 6 IS A STANDARD REFERENCE MARK DISK CEMENTED
 JV3569'IN A DRILL HOLE IN THE HEADWALL OF A CONCRETE CULVERT, THAT IS AT
 JV3569'THE DRIVEWAY ENTRANCE TO THE RED HORSE STEAK HOUSE.  IT IS 50 FEET
 JV3569'EAST OF THE CENTERLINE OF THE NORTH BOUND TRAFFIC LANES OF
 JV3569'U.S. HIGHWAY 40, 21 FEET NORTHWEST FROM THE NOSE OF A RED HORSE
 JV3569'STATUE, 20 FEET WEST OF A LIGHT POLE, 18.5 FEET SOUTHEAST OF
 JV3569'CENTERLINE OF DRIVEWAY TO STEAK HOUSE, AND 1.0 FOOT SOUTHWEST
 JV3569'OF THE NORTHEAST END OF HEADWALL OF CULVERT.  IT IS STAMPED
 JV3569'DAYSDAIR 2 NO 6 1970.
 JV3569'
 JV3569'THE AZIMUTH MARK IS 0.5 MILE NORTH-NORTHWEST OF THE STATION ON
 JV3569'THE SOUTHWEST SIDE OF U.S. HIGHWAY 40, 39 FEET WEST OF THE
 JV3569'CENTERLINE OF SOUTH BOUND TRAFFIC LANES, 27 FEET SOUTH OF THE
 JV3569'CENTERLINE OF CREST VIEW RD., 6.5 FEET EAST OF A STOP SIGN, AND 3
 JV3569'FEET EAST OF WEST END OF CULVERT.  IT IS AN AZIMUTH MARK DISK
 JV3569'SET IN A DRILL HOLE IN THE HEADWALL OF A CONCRETE CULVERT AND
 JV3569'THE DISK IS STAMPED DAYSDAIR 2 1970.
 JV3569'
 JV3569'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40
 JV3569'AND I-70, GO NORTH-NORTHWEST ON U.S. HIGHWAY 40 FOR 0.95 MILE
 JV3569'TO THE STATION ON THE RIGHT.
 JV3569
 JV3569                          STATION RECOVERY (1970)
 JV3569
 JV3569'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 JV3569'1.5 MI E FROM FUNKSTOWN.
 JV3569'0.95 MILE NORTH-NORTHWEST ALONG U.S. HIGHWAY 40 FROM ITS JUNCTION
 JV3569'WITH HIGHWAY I-70, ABOUT 1.75 MILES SOUTHEAST OF THE CENTER OF
 JV3569'HAGERSTOWN.  IT IS FLUSH WITH THE GROUND IN A WELL KEPT LAWN IN
 JV3569'THE FRONT OF THE RESIDENCE AND STORE OF MR. SAM H. TURNER, 72
 JV3569'FEET SOUTH-SOUTHWEST OF THE NORTHWEST CORNER OF BUILDING, 66 FEET
 JV3569'SOUTHEAST OF CENTERLINE OF DRIVEWAY TO MR. TURNERS HOME AND
 JV3569'BUSINESS, 64 FEET EAST OF THE CENTERLINE OF THE NORTH BOUND
 JV3569'TRAFFIC LANES OF U.S. HIGHWAY 40, 52 FEET SOUTHWEST OF THE
 JV3569'NORTHWEST CORNER OF PORCH, 49.5 FEET WEST-SOUTHWEST OF THE
 JV3569'SOUTHWEST CORNER OF PORCH, AND 31 FEET SOUTH OF A POST SUPPORTING
 JV3569'TURNERS DECORATING SIGN.  IT IS A BRONZE DISK SET IN THE TOP
 JV3569'OF A CONCRETE POST FLUSH WITH GROUND SURFACE AND DISK IS STAMPED
 JV3569'DAYSDAIR 2 1970.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3567 ***********************************************************************
 JV3567  DESIGNATION -  DAYSDAIR 2 RM 5
 JV3567  PID         -  JV3567
 JV3567  STATE/COUNTY-  MD/WASHINGTON
 JV3567  COUNTRY     -  US
 JV3567  USGS QUAD   -  FUNKSTOWN (2017)
 JV3567
 JV3567                         *CURRENT SURVEY CONTROL
 JV3567  ______________________________________________________________________
 JV3567* NAD 83(1986) POSITION- 39 36 44.83   (N) 077 41 23.41   (W)   HD_HELD1
 JV3567* NAVD 88 ORTHO HEIGHT -   168.77  (meters)      553.7   (feet) RESET
 JV3567  ______________________________________________________________________
 JV3567  GEOID HEIGHT    -        -34.017 (meters)                     GEOID18
 JV3567  VERT ORDER      -  THIRD
 JV3567
 JV3567.The horizontal coordinates were determined by differentially corrected
 JV3567.hand held GPS observations or other comparable positioning techniques
 JV3567.and have an estimated accuracy of +/- 3 meters.
 JV3567
 JV3567.The orthometric height was computed from unverified reset data.
 JV3567
 JV3567.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3567.GEOID18 height accuracy estimate available here.
 JV3567
 JV3567.Click photographs - Photos may exist for this station.
 JV3567
 JV3567;                    North         East    Units  Estimated Accuracy
 JV3567;SPC MD       -   216,224.2     340,759.2     MT  (+/- 3 meters HH1 GPS) 
 JV3567
 JV3567_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6908788202(NAD 83)
 JV3567
 JV3567                          SUPERSEDED SURVEY CONTROL
 JV3567
 JV3567  NGVD 29 (??/??/??)  168.97   (m)          554.4    (f) RESET       3  
 JV3567
 JV3567.Superseded values are not recommended for survey control.
 JV3567
 JV3567.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3567.See file dsdata.pdf to determine how the superseded data were derived.
 JV3567
 JV3567_MARKER: DR = REFERENCE MARK DISK
 JV3567_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3567_STAMPING: DAYSDAIR 2 NO 5 1970
 JV3567_MARK LOGO: CGS
 JV3567_PROJECTION: FLUSH
 JV3567_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3567+STABILITY: SURFACE MOTION
 JV3567
 JV3567  HISTORY     - Date     Condition        Report By
 JV3567  HISTORY     - 1970     MONUMENTED       NGS
 JV3567
 JV3567                          STATION DESCRIPTION
 JV3567
 JV3567'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970
 JV3567'1.5 MI E FROM FUNKSTOWN.
 JV3567'0.95 MILE NORTH-NORTHWEST ALONG U.S. HIGHWAY 40 FROM ITS JUNCTION
 JV3567'WITH HIGHWAY I-70, ABOUT 1.75 MILES SOUTHEAST OF THE CENTER OF
 JV3567'HAGERSTOWN.  IT IS FLUSH WITH THE GROUND IN LAWN NEAR EDGE OF
 JV3567'ROAD AT RESIDENCE AND STORE OF MR. SAM H. TURNER, 79 FEET
 JV3567'SOUTHWEST OF THE NORTHWEST CORNER OF MR. TURNERS HOUSE AND SHOP,
 JV3567'47 FEET WEST-SOUTHWEST OF TURNERS DECORATING SIGN, 25.5 FEET SOUTH
 JV3567'OF THE CENTERLINE OF DRIVEWAY, 23.0 FEET EAST-NORTHEAST OF THE
 JV3567'CENTERLINE OF THE NORTH BOUND TRAFFIC LANES OF U.S. HIGHWAY 40,
 JV3567'AND 2.0 FEET SOUTHEAST OF A MAILBOX.  THE DISK IS SET IN THE TOP
 JV3567'OF A CONCRETE POST THAT IS FLUSH WITH SURFACE OF GROUND, AND THE
 JV3567'DISK IS STAMPED DAYSDAIR 2 NO 5 1970.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3568 ***********************************************************************
 JV3568  DESIGNATION -  DAYSDAIR 2 RM 6
 JV3568  PID         -  JV3568
 JV3568  STATE/COUNTY-  MD/WASHINGTON
 JV3568  COUNTRY     -  US
 JV3568  USGS QUAD   -  FUNKSTOWN (2017)
 JV3568
 JV3568                         *CURRENT SURVEY CONTROL
 JV3568  ______________________________________________________________________
 JV3568* NAD 83(1986) POSITION- 39 36 46.65   (N) 077 41 24.14   (W)   HD_HELD1
 JV3568* NAVD 88 ORTHO HEIGHT -   168.04  (meters)      551.3   (feet) RESET
 JV3568  ______________________________________________________________________
 JV3568  GEOID HEIGHT    -        -34.019 (meters)                     GEOID18
 JV3568  VERT ORDER      -  THIRD
 JV3568
 JV3568.The horizontal coordinates were determined by differentially corrected
 JV3568.hand held GPS observations or other comparable positioning techniques
 JV3568.and have an estimated accuracy of +/- 3 meters.
 JV3568
 JV3568.The orthometric height was computed from unverified reset data.
 JV3568
 JV3568.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3568.GEOID18 height accuracy estimate available here.
 JV3568
 JV3568.Click photographs - Photos may exist for this station.
 JV3568
 JV3568;                    North         East    Units  Estimated Accuracy
 JV3568;SPC MD       -   216,280.5     340,742.2     MT  (+/- 3 meters HH1 GPS) 
 JV3568
 JV3568_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6907188258(NAD 83)
 JV3568
 JV3568                          SUPERSEDED SURVEY CONTROL
 JV3568
 JV3568  NGVD 29 (??/??/??)  168.24   (m)          552.0    (f) RESET       3  
 JV3568
 JV3568.Superseded values are not recommended for survey control.
 JV3568
 JV3568.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3568.See file dsdata.pdf to determine how the superseded data were derived.
 JV3568
 JV3568_MARKER: DR = REFERENCE MARK DISK
 JV3568_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV3568_SP_SET: CULVERT
 JV3568_STAMPING: DAYSDAIR 2 NO 6 1970
 JV3568_MARK LOGO: CGS
 JV3568_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3568
 JV3568  HISTORY     - Date     Condition        Report By
 JV3568  HISTORY     - 1970     MONUMENTED       NGS
 JV3568
 JV3568                          STATION DESCRIPTION
 JV3568
 JV3568'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970
 JV3568'1.5 MI E FROM FUNKSTOWN.
 JV3568'1.0 MILE NORTH-NORTHWEST ALONG U.S. HIGHWAY 40 FROM ITS INTERSECTION
 JV3568'WITH HIGHWAY I-70, ABOUT 1.75 MILES SOUTHEAST OF THE CENTER OF
 JV3568'HAGERSTOWN, 221.5 FEET NORTH-NORTHWEST OF TRIANGULATION STATION,
 JV3568'CEMENTED IN A DRILL HOLE IN A CONCRETE CULVERT HEADWALL, 50 FEET
 JV3568'EAST OF CENTERLINE OF THE NORTH BOUND TRAFFIC LANES OF U.S.
 JV3568'HIGHWAY 40, 21 FEET NORTHWEST FROM THE NOSE OF A RED HORSE STATUE,
 JV3568'20 FEET WEST OF LIGHT AND POLE, 18.5 FEET SOUTHEAST OF THE
 JV3568'CENTERLINE OF DRIVEWAY TO THE RED HORSE STEAK HOUSE, AND 1.0 FOOT
 JV3568'SOUTHWEST OF THE NORTHEAST END OF HEADWALL OF CULVERT.  IT IS
 JV3568'STAMPED DAYSDAIR 2 NO 6 1970.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6016 ***********************************************************************
 JV6016  DESIGNATION -  DAYTON
 JV6016  PID         -  JV6016
 JV6016  STATE/COUNTY-  MD/HOWARD
 JV6016  COUNTRY     -  US
 JV6016  USGS QUAD   -  CLARKSVILLE (2016)
 JV6016
 JV6016                         *CURRENT SURVEY CONTROL
 JV6016  ______________________________________________________________________
 JV6016* NAD 83(2011) POSITION- 39 14 42.61943(N) 076 59 23.65753(W)   ADJUSTED
 JV6016* NAD 83(2011) ELLIP HT-   159.916 (meters)        (06/27/12)   ADJUSTED
 JV6016* NAD 83(2011) EPOCH   -  2010.00
 JV6016* NAVD 88 ORTHO HEIGHT -   191.8   (meters)      629.    (feet) VERTCON3
 JV6016  ______________________________________________________________________
 JV6016  GEOID HEIGHT    -        -31.922 (meters)                     GEOID18
 JV6016  NAD 83(2011) X  -  1,113,519.338 (meters)                     COMP
 JV6016  NAD 83(2011) Y  - -4,819,307.968 (meters)                     COMP
 JV6016  NAD 83(2011) Z  -  4,013,534.202 (meters)                     COMP
 JV6016  LAPLACE CORR    -         -2.85  (seconds)                    DEFLEC18
 JV6016
 JV6016  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6016  Standards:
 JV6016         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6016            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6016  -------------------------------------------------------------------
 JV6016  NETWORK    0.95   1.67           0.43   0.33   0.85      0.00373248
 JV6016  -------------------------------------------------------------------
 JV6016  Click here for local accuracies and other accuracy information.
 JV6016
 JV6016.The horizontal coordinates were established by GPS observations
 JV6016.and adjusted by the National Geodetic Survey in June 2012.
 JV6016
 JV6016.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6016.been affixed to the stable North American tectonic plate. See 
 JV6016.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6016
 JV6016.The horizontal coordinates are valid at the epoch date displayed above
 JV6016.which is a decimal equivalence of Year/Month/Day.
 JV6016
 JV6016.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6016.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6016
 JV6016.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6016.GEOID18 height accuracy estimate available here.
 JV6016
 JV6016.Click photographs - Photos may exist for this station.
 JV6016
 JV6016.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6016
 JV6016.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6016
 JV6016.The ellipsoidal height was determined by GPS observations
 JV6016.and is referenced to NAD 83.
 JV6016
 JV6016. The following values were computed from the NAD 83(2011) position.
 JV6016
 JV6016;                    North         East     Units Scale Factor Converg.
 JV6016;SPC MD       -   175,223.632   400,871.453   MT  0.99997058   +0 00 22.8
 JV6016;SPC MD       -   574,879.53  1,315,192.43   sFT  0.99997058   +0 00 22.8
 JV6016;UTM  18      - 4,345,871.088   328,279.915   MT  0.99996309   -1 15 33.1
 JV6016
 JV6016!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6016!SPC MD       -   0.99997491  x   0.99997058  =   0.99994549
 JV6016!UTM  18      -   0.99997491  x   0.99996309  =   0.99993800
 JV6016
 JV6016:                Primary Azimuth Mark                     Grid Az
 JV6016:SPC MD       -  DAYTON AZ MK RESET                       333 32 37.9
 JV6016:UTM  18      -  DAYTON AZ MK RESET                       334 48 33.8
 JV6016
 JV6016_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2827945871(NAD 83)
 JV6016
 JV6016|---------------------------------------------------------------------|
 JV6016| PID    Reference Object                     Distance      Geod. Az  |
 JV6016|                                                           dddmmss.s |
 JV6016| JV6628 DAYTON RM 1                          50.664 METERS 12321     |
 JV6016| JV6015 CLARKSVILLE ATT MICROWAVE           APPROX. 3.2 KM 1553907.8 |
 JV6016| JV6629 DAYTON RM 2                          38.268 METERS 22703     |
 JV6016| JV6631 DAYTON RM 4                          38.257 METERS 22706     |
 JV6016| JV6572 DAYTON AZ MK 3                      APPROX. 0.6 KM 3331340.0 |
 JV6016| JV6632 DAYTON AZ MK RESET                                 3333300.7 |
 JV6016| JV6633 DAYTON AZ MK                                       3334648.0 |
 JV6016| JV6060 W FRIENDSHIP MCKENDREE METH CH      APPROX. 7.5 KM 3552428.7 |
 JV6016| JV6630 DAYTON RM 3                           8.982 METERS 35747     |
 JV6016|---------------------------------------------------------------------|
 JV6016
 JV6016                          SUPERSEDED SURVEY CONTROL
 JV6016
 JV6016  NAD 83(2007)-  39 14 42.61965(N)    076 59 23.65828(W) AD(2002.00) 0
 JV6016  ELLIP H (02/10/07)  159.948  (m)                       GP(2002.00)    
 JV6016  ELLIP H (08/30/02)  159.949  (m)                       GP(       ) 4 2
 JV6016  NAD 83(1991)-  39 14 42.61947(N)    076 59 23.65832(W) AD(       ) 1
 JV6016  ELLIP H (02/23/93)  159.845  (m)                       GP(       ) 4 2
 JV6016  NAD 83(1991)-  39 14 42.61902(N)    076 59 23.65710(W) AD(       ) 2
 JV6016  NAD 83(1986)-  39 14 42.61833(N)    076 59 23.66635(W) AD(       ) 2
 JV6016  NAD 27      -  39 14 42.23784(N)    076 59 24.74689(W) AD(       ) 2
 JV6016  NGVD 29 (07/19/86)  192.0    (m)          630.     (f) VERT ANG       
 JV6016
 JV6016.Superseded values are not recommended for survey control.
 JV6016
 JV6016.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6016.See file dsdata.pdf to determine how the superseded data were derived.
 JV6016
 JV6016_MARKER: DS = TRIANGULATION STATION DISK
 JV6016_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6016_STAMPING: DAYTON 1942
 JV6016_MARK LOGO: CGS
 JV6016_PROJECTION: PROJECTING 10 CENTIMETERS
 JV6016_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6016_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6016+STABILITY: SURFACE MOTION
 JV6016_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6016+SATELLITE: SATELLITE OBSERVATIONS - July 19, 1991
 JV6016
 JV6016  HISTORY     - Date     Condition        Report By
 JV6016  HISTORY     - 1942     MONUMENTED       CGS
 JV6016  HISTORY     - 1943     GOOD             CGS
 JV6016  HISTORY     - 1953     GOOD             CGS
 JV6016  HISTORY     - 1954     GOOD             CGS
 JV6016  HISTORY     - 1956     GOOD             CGS
 JV6016  HISTORY     - 1963     GOOD             MDDT
 JV6016  HISTORY     - 1981     GOOD             NGS
 JV6016  HISTORY     - 19810604 GOOD             NGS
 JV6016  HISTORY     - 19901125 GOOD             MD-027
 JV6016  HISTORY     - 19910719 GOOD
 JV6016  HISTORY     - 19920819 GOOD             USPSQD
 JV6016  HISTORY     - 20220313 SEE DESCRIPTION  PROFLN
 JV6016
 JV6016                          STATION DESCRIPTION
 JV6016
 JV6016'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV6016'THE STATION IS LOCATED ABOUT 1/2 MILE NW OF THE VILLAGE OF DAYTON
 JV6016'IN A FARMYARD OWNED BY MR. STANLEY MAXLEY AND FARMED BY MR. ELLIS
 JV6016'RICHARDSON.  IT IS 3 FEET S OF A FENCE LINE, 30 FEET E OF A SHED
 JV6016'AND 60 FEET W OF A BARN.  IT IS FLUSH WITH THE GROUND AND IS
 JV6016'STAMPED DAYTON 1942.
 JV6016'
 JV6016'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV6016'DISKS SET IN CONCRETE.
 JV6016'
 JV6016'REFERENCE MARK NO.1 IS SE OF THE STATION, 1 FOOT N OF A GARDEN
 JV6016'FENCE.  IT PROJECTS 6 INCHES AND THE DISK IS STAMPED DAYTON NO.1
 JV6016'1942.
 JV6016'
 JV6016'REFERENCE MARK NO.2 IS SW OF THE STATION AT A FENCE CORNER ON
 JV6016'THE N SIDE OF THE FARM DRIVEWAY.  IT PROJECTS 4 INCHES AND THE DISK
 JV6016'IS STAMPED DAYTON NO.2 1942.
 JV6016'
 JV6016'THE AZIMUTH MARK IS LOCATED 0.45 MILE BY ROAD NNW OF THE
 JV6016'ENTRANCE TO THE FARMYARD IN WHICH THE STATION IS LOCATED.  IT IS
 JV6016'3 FEET W OF FENCE LINE, 83 FEET S OF A FENCE CORNER AND 14 FEET W
 JV6016'OF CENTER OF THE DIRT ROAD.  IT PROJECTS 3 INCHES AND THE DISK
 JV6016'IS STAMPED DAYTON 1942.
 JV6016'
 JV6016'TO REACH THE STATION FROM THE VILLAGE OF CLARKSVILLE ON
 JV6016'U.S. HIGHWAY 29 GO NW ON A PAVED ROAD 4 MILES TO THE SETTLEMENT
 JV6016'OF DAYTON.  HERE TURN LEFT ON A GRADED DIRT ROAD AND GO NORTHERLY
 JV6016'FOR 1/2 MILE TO THE RICHARDSON FARM ON THE RIGHT AND THE STATION.
 JV6016'
 JV6016'NOTE--THIS STATION WAS MARKED IN 1942 AND LOCATED IN 1943.
 JV6016'
 JV6016'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT GUILFORD.
 JV6016'
 JV6016'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT SLACK.
 JV6016'
 JV6016'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT SAUTER 1938.
 JV6016'
 JV6016'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT JONESTOWN.
 JV6016'
 JV6016'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STABLER 1869.
 JV6016'
 JV6016'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAMACUS.
 JV6016'
 JV6016'A 37-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT FLORENCE.
 JV6016'
 JV6016'A 4-FOOT STAND WILL SEE AN 87-FOOT LIGHT AT RIDGE.
 JV6016'
 JV6016'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT OLNEY.
 JV6016'
 JV6016'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT COOK.
 JV6016'
 JV6016'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT UNITY.
 JV6016'
 JV6016'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT LAYTON.
 JV6016'
 JV6016'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6016
 JV6016                          STATION RECOVERY (1953)
 JV6016
 JV6016'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (EWM)
 JV6016'STATION IS ABOUT 15 FT. S OF A FENCE LINE.  THE OLD FENCE HAS BEEN
 JV6016'REMOVED.  REFERENCE MARKS AND AZIMUTH MARK ARE IN GOOD CONDITION.
 JV6016
 JV6016                          STATION RECOVERY (1954)
 JV6016
 JV6016'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (WVP)
 JV6016'THE STATION, AZIMUTH MARK, AND REFERENCE MARK 2 WERE RECOVERED IN GOOD
 JV6016'CONDITION.  REFERENCE MARK 1 WAS NOT LOCATED, BUT A COMPLETE SEARCH
 JV6016'WAS NOT MADE DUE TO HIGH WEEDS AND RUBBISH IN THE AREA OF THE MARK.
 JV6016'
 JV6016'THE AZIMUTH MARK WAS REMOVED AT THE REQUEST OF THE HOWARD COUNTY ROAD
 JV6016'COMMISSION TO PERMIT NEW CONSTRUCTION.  A NEW AZIMUTH MARK WAS SET IN
 JV6016'THE IMMEDIATE AREA AND IS 10 FT. WEST OF THE PREVIOUS LOCATION, AND
 JV6016'WILL BE ABOUT 3 FT. WEST OF THE FENCE LINE WHEN THE FENCE IS
 JV6016'RELOCATED.  THE MARK, STAMPED DAYTON 1943 RESET 1954, IS A STANDARD
 JV6016'AZIMUTH-MARK DISK SET IN A 10-IN. CONCRETE CYLINDER THAT WILL BE FLUSH
 JV6016'WITH THE GROUND WHEN CONSTRUCTION IS COMPLETE.
 JV6016
 JV6016                          STATION RECOVERY (1956)
 JV6016
 JV6016'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (WVP)
 JV6016'STATION RECOVERED, AND ALL MARKS FOUND IN GOOD CONDITION.  THE
 JV6016'AZIMUTH MARK, STAMPED DAYTON 1943 RESET 1954, IS NOW 22 FT. W OF THE
 JV6016'CENTERLINE OF LINTHICUM ROAD, 3 FT. E OF A WIRE FENCE, AND
 JV6016'ABOUT 105 FT. S OF A FENCE CORNER.  A DISCREPANCY IN THE DISTANCE
 JV6016'AND DIRECTION TO REFERENCE MARK 1 WAS NOTICED, AND THE NEW
 JV6016'MEASUREMENTS ARE SHOWN BELOW.  THE LINE OF SIGHT AND MEASUREMENT
 JV6016'TO REFERENCE MARK 2 WAS OBSTRUCTED BY A PORTABLE GRAIN ELEVATOR
 JV6016'SO AN ACCURATE CHECK WAS NOT POSSIBLE.  THE ORIGINAL OBSERVATIONS
 JV6016'TO REFERENCE MARK 2 APPEAR TO BE ACCURATE.
 JV6016
 JV6016                          STATION RECOVERY (1963)
 JV6016
 JV6016'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 JV6016'STATION, R.M. 2 AND AZIMUTH MARK FOUND IN GOOD CONDITION.  R.M. 1
 JV6016'FOUND DESTROYED.
 JV6016'
 JV6016'STATION MARK IS LOCATED IN THE FARM YARD OWNED BY MR. ALLEN M. BROWN,
 JV6016'34.7 FEET W OF SW CORNER OF CONCRETE BLOCK DAIRY BARN, 44.5 FEET S
 JV6016'OF NW CORNER OF BARN AND 23.6 FEET N OF CENTER LINE OF ENTRANCE TO
 JV6016'OLD BARN.
 JV6016'
 JV6016'R.M. 2 IS 1.0 FEET E OF A FENCE CORNER NEAR RESIDENCE AND 10.0 FEET
 JV6016'N OF CENTER LINE OF FARM ENTRANCE.
 JV6016
 JV6016                          STATION RECOVERY (1981)
 JV6016
 JV6016'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981 (CLN)
 JV6016'THE STATION MARK, REFERENCE MARK TWO AND THE 1954 AZIMUTH MARK WERE
 JV6016'RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK ONE WAS NOT
 JV6016'FOUND AND BELIEVED DESTROYED.  REFERENCE MARK TWO WAS LOWERED IN
 JV6016'POSITION AT THE REQUEST OF THE PROPERTY OWNER.  IT WAS REPLACED WITH A
 JV6016'STANDARD NGS REFERENCE MARK DISK.  A NEW REFERENCE MARK THREE WAS ALSO
 JV6016'ESTABLISHED TO REPLACE THE REFERENCE MARK ONE.  THE DISTANCE AND
 JV6016'DIRECTION TO REFERENCE MARK TWO CHECKED THE MOST RECENT INFORMATION.
 JV6016'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV6016'
 JV6016'THE STATION IS LOCATED 41.8 KM (26 MILES) WEST-NORTHWEST OF BALTIMORE,
 JV6016'26 KM (16 MI) NORTHWEST OF LAUREL AND 0.8 KM (0.5 MI) NORTHWEST OF
 JV6016'DAYTON.  OWNERSHIP, ALLEN M. BROWN, 4609 LINTHICUM ROAD, DAYTON,
 JV6016'MARYLAND.
 JV6016'
 JV6016'TO REACH THE STATION FROM THE POST OFFICE IN DAYTON, GO NORTHWEST ON
 JV6016'TEN OAKS ROAD FOR 0.4 KM (0.25 MI) TO A CROSSROADS, THIS IS AT THE
 JV6016'INTERSECTION OF TEN OAKS ROAD, GREEN BRIDGE ROAD AND LINTHICUM ROAD.
 JV6016'GO NORTHWEST ON LINTHICUM ROAD FOR 0.3 KM (0.2 MI) TO A FORK, HOWARD
 JV6016'ROAD TO LEFT AND LINTHICUM ROAD TO RIGHT.  BEAR RIGHT AND GO
 JV6016'NORTH-NORTHWEST ON LINTHICUM ROAD FOR 0.4 KM (0.2 MI) TO MR. BROWNS
 JV6016'RESIDENCE ON THE RIGHT AND THE STATION ON THE RIGHT.
 JV6016'
 JV6016'THE STATION IS A STANDARD CGS (NOW NOS) DISK STAMPED---DAYTON 1942---
 JV6016'SET INTO THE TOP OF A SQUARE CONCRETE MONUMENT 30 CM (12 INCHES) ON
 JV6016'SIDE PROJECTING 10 CM (4 INCHES) ABOVE THE GROUND LOCATED 48.7 METERS
 JV6016'(159.7 FEET) NORTHEAST FROM THE CENTER OF THE NORTH FACE OF A
 JV6016'FIREPLACE CHIMNEY, 89.9 METERS (295.0 FEET) EAST FROM THE CENTER OF
 JV6016'LINTHICUM ROAD, 19.2 METERS (63.1 FEET) EAST-NORTHEAST FROM A
 JV6016'POWERLINE LIGHT POLE, 7.9 METERS (26.0 FEET) NORTH FROM THE CENTER OF
 JV6016'A FIELD ROAD, AND 2.6 METERS (8.5 FEET) SOUTHWEST FROM THE SOUTHWEST
 JV6016'CORNER OF A CRAB PROCESSING HOUSE PATIO.
 JV6016'
 JV6016'REFERENCE MARK NO. 3 IS A STANDARD NGS DISK STAMPED
 JV6016'---DAYTON 1943 NO 3 1981--- CEMENTED IN A DRILL HOLE IN THE NORTHWEST
 JV6016'CORNER OF A CONCRETE SLAB FOR THE PATIO OF A CRAB PROCESSING HOUSE.
 JV6016'THE MARK IS LOCATED 55.5 METERS (182.0 FEET) NORTHEAST FROM THE FIRE
 JV6016'PLACE CHIMNEY, 27.7 METERS NORTHEAST FROM THE POWERLINE LIGHT POLE,
 JV6016'6.6 METERS (21.7 FEET) NORTH FROM THE SOUTHWEST CORNER OF THE PATIO,
 JV6016'AND 0.3 METER (1.0 FOOT) SOUTH FROM THE SOUTHWEST CORNER OF THE CRAB
 JV6016'PROCESSING HOUSE.
 JV6016'
 JV6016'REFERENCE MARK NO. 4 IS A STANDARD NGS DISK STAMPED
 JV6016'---DAYTON 1943 NO 4 1981--- SET INTO THE TOP OF A SQUARE CONCRETE
 JV6016'MONUMENT 25 CM (10 INCHES) ON SIDE FLUSH WITH THE GROUND LOCATED 55.2
 JV6016'METERS (181.0 FEET) EAST FROM THE CENTER OF LINTHICUM ROAD, 19.6
 JV6016'METERS (64.4 FEET) SOUTHWEST FROM THE POWERLINE LIGHT POLE, 11.8
 JV6016'METERS (38.8 FEET) NORTHEAST FROM THE FIRE PLACE CHIMNEY, 2.7 METERS
 JV6016'(9.0 FEET) NORTH FROM THE CENTER OF THE DRIVE LEADING TO MR. BROWNS
 JV6016'HOME, AND 0.6 METER (2 FEET) LOWER THAN THE STATION.
 JV6016'
 JV6016'AZIMUTH MARK NO. 2 IS A STANDARD CGS (NOW NOS) DISK STAMPED
 JV6016'---DAYTON 1943 RESET 1954--- SET INTO THE TOP OF A ROUND CONCRETE
 JV6016'MONUMENT 25 CM (10 INCHES) IN DIAMETER FLUSH WITH THE GROUND LOCATED
 JV6016'33.8 METERS (110.8 FEET) SOUTH FROM A POWERLINE POLE NUMBERED CP152,
 JV6016'11.6 METERS (37.9 FEET) WEST FROM THE CENTER OF LINTHICUM ROAD, 1.1
 JV6016'METERS (3.5 FEET) EAST FROM A NORTH-SOUTH FENCE, AND 0.3 METER
 JV6016'(1.0 FOOT) WEST FROM A WITNESS POST.
 JV6016'
 JV6016'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH-NORTHWEST ON
 JV6016'LINTHICUM ROAD FOR 0.6 KM (0.4 MI) TO THE MARK ON THE LEFT.
 JV6016
 JV6016                          STATION RECOVERY (1981)
 JV6016
 JV6016'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 JV6016'THE STATION MARK, REFERENCE MARK TWO AND THE RESET AZIMUTH MARK
 JV6016'(AZIMUTH MARK TWO) WERE RECOVERED AND FOUND IN GOOD CONDITION.
 JV6016'REFERENCE MARK ONE WAS NOT FOUND AND BELIEVED DESTROYED.  REFERENCE
 JV6016'MARK TWO WAS LOWERED IN POSITION AT THE REQUEST OF THE PROPERTY OWNER.
 JV6016'IT WAS REPLACED WITH A NEW NGS REFERENCE MARK FOUR.  A NEW REFERENCE
 JV6016'MARK THREE WAS ALSO ESTABLISHED TO REPLACE THE OLD REFERENCE MARK ONE.
 JV6016'THE DISTANCE AND DIRECTION TO REFERENCE MARK TWO WERE WITHIN CLOSE
 JV6016'AGREEMENT WITH THE MOST RECENT INFORMATION AVALIABLE.  ON MAY 23, 1984
 JV6016'THIS STATION WAS VISITED AGAIN BY THE SAME FIELD CREW.  AT THAT TIME
 JV6016'THE RESET AZIMUTH MARK (AZIMUTH MARK TWO) WAS FOUND IN THE PRONE
 JV6016'POSITION.  A NEW AZIMUTH MARK THREE WAS ESTABLISHED AT THAT DATE.  ALL
 JV6016'OTHER MARKS WERE FOUND IN GOOD CONDITION AS PREVIOUSLY DESCRIBED.  A
 JV6016'COMPLETE NEW DESCRIPTION OF THIS STATION FOLLOWS.
 JV6016'
 JV6016'THE STATION IS LOCATED ABOUT 41.85 KM (26.00 MI) WEST-NORTHWEST OF
 JV6016'BALTIMORE, 25.75 KM (16.00 MI) NORTHWEST OF LAUREL AND 0.8 KM
 JV6016'(0.50 MI) NORTHWEST OF DAYTON.  OWNERSHIP--ALLEN M. BROWN, 4609
 JV6016'LINTHICUM ROAD, DAYTON, MARYLAND.
 JV6016'
 JV6016'TO REACH FROM THE POST OFFICE IN DAYTON, GO NORTHWEST ON TEN OAKS ROAD
 JV6016'FOR 0.4 KM (0.25 MI) TO A CROSSROADS, THIS IS AT THE INTERSECTION OF
 JV6016'TEN OAKS ROAD, GREEN BRIDGE ROAD AND LINTHICUM ROAD.  GO NORTHWEST ON
 JV6016'LINTHICUM ROAD FOR 0.3 KM (0.20 MI) TO HOWARD ROAD.  BEAR RIGHT AND GO
 JV6016'NORTH-NORTHWEST ON LINTHICUM ROAD FOR 0.35 KM (0.20 MI) TO MR. BROWNS
 JV6016'RESIDENCE ON THE RIGHT AND THE STATION.
 JV6016'
 JV6016'THE STATION IS SET IN THE TOP OF THE 0.3 M (1.0 FT) SQUARE CONCRETE
 JV6016'MONUMENT WHICH PROJECTS 0.1 M (0.3 FT) ABOVE THE SURFACE OF THE
 JV6016'GROUND.  IT IS 48.67 M (159.7 FT) NORTHEAST OF THE NORTH FACE OF A
 JV6016'FIREPLACE CHIMNEY, 89.93 M (295.0 FT) EAST OF THE CENTER OF LINTHICUM
 JV6016'ROAD, 19.22 M (63.1 FT) EAST-NORTHEAST OF A POWERLINE LIGHT POLE, 7.94
 JV6016'M (26.0 FT) NORTH OF THE CENTER OF A FIELD ROAD AND 2.6 M (8.5 FT)
 JV6016'SOUTHWEST OF THE SOUTHWEST CORNER OF A CRAB PROCESSING HOUSE PATIO.
 JV6016
 JV6016                          STATION RECOVERY (1990)
 JV6016
 JV6016'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 1990
 JV6016'RECOVERED IN GOOD CONDITION.
 JV6016
 JV6016                          STATION RECOVERY (1991)
 JV6016
 JV6016'RECOVERED 1991
 JV6016'RECOVERED IN GOOD CONDITION.
 JV6016
 JV6016                          STATION RECOVERY (1992)
 JV6016
 JV6016'RECOVERY NOTE BY US POWER SQUADRON 1992 (DTH)
 JV6016'RECOVERED IN GOOD CONDITION.
 JV6016
 JV6016                          STATION RECOVERY (2022)
 JV6016
 JV6016'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2022 (JRO)
 JV6016'THE PROPERTY OWNER REFUSED ACCESS TO THE PROPERTY TO SEARCH FOR THE
 JV6016'MAIN STATION, WHICH IS BURIED NEAR A DOLL HOUSE.  HE KEPT SAYING COME
 JV6016'BACK IN A FEW MONTHS, MAYBE YOU CAN SEARCH THEN, BUT EACH TIME
 JV6016'DECLINED AGAIN.  MAYBE SOMEONE ACTUALLY NEEDING TO USE THE MARK, SUCH
 JV6016'AS A SURVEYING COMPANY OR GOVERNMENT AGENCY, WOULD BE ALLOWED ON SITE.
 JV6016'MEANWHILE REFERENCE MARK 3 AND REFERENCE MARK 4, WHICH WAS SET IN THE
 JV6016'POST OF REFERENCE MARK 2, WERE SPIED IN GOOD SHAPE NEARBY.  AZIMUTH
 JV6016'MARK 3 IS IN GOOD SHAPE ALSO.
 JV6016'
 JV6016'THE DESCRIPTION MENTIONS A BARN AND A CRAB PROCESSING HOUSE BUT THESE
 JV6016'NO LONGER EXIST.  JUST THE FARM HOUSE, THE DOLL HOUSE AND A BIG
 JV6016'GARAGE.  THERE IS A HOWARD COUNTY GEODETIC MONUMENT OUT BY LINTHICUM
 JV6016'ROAD.  ON THE SOUTH SIDE OF THE DRIVEWAY, EAST SIDE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6572 ***********************************************************************
 JV6572  DESIGNATION -  DAYTON AZ MK 3
 JV6572  PID         -  JV6572
 JV6572  STATE/COUNTY-  MD/HOWARD
 JV6572  COUNTRY     -  US
 JV6572  USGS QUAD   -  SYKESVILLE (2016)
 JV6572
 JV6572                         *CURRENT SURVEY CONTROL
 JV6572  ______________________________________________________________________
 JV6572* NAD 83(1991) POSITION- 39 15 00.84608(N) 076 59 35.48470(W)   NO CHECK
 JV6572* NAVD 88 ORTHO HEIGHT -   172.9   (meters)      567.    (feet) VERTCON3
 JV6572  ______________________________________________________________________
 JV6572  GEOID HEIGHT    -        -31.916 (meters)                     GEOID18
 JV6572  LAPLACE CORR    -         -2.70  (seconds)                    DEFLEC18
 JV6572  HORZ ORDER      -  THIRD
 JV6572
 JV6572.The horizontal coordinates were established by classical geodetic methods
 JV6572.and adjusted by the National Geodetic Survey in January 1992.
 JV6572
 JV6572.No horizontal observational check was made to the station.
 JV6572
 JV6572.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6572.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6572
 JV6572.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6572.GEOID18 height accuracy estimate available here.
 JV6572
 JV6572.Click photographs - Photos may exist for this station.
 JV6572
 JV6572.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6572
 JV6572. The following values were computed from the NAD 83(1991) position.
 JV6572
 JV6572;                    North         East     Units Scale Factor Converg.
 JV6572;SPC MD       -   175,785.680   400,587.809   MT  0.99997115   +0 00 15.4
 JV6572;SPC MD       -   576,723.52  1,314,261.84   sFT  0.99997115   +0 00 15.4
 JV6572;UTM  18      - 4,346,439.259   328,008.755   MT  0.99996423   -1 15 41.1
 JV6572
 JV6572!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6572!SPC MD       -   0.99997788  x   0.99997115  =   0.99994903
 JV6572!UTM  18      -   0.99997788  x   0.99996423  =   0.99994211
 JV6572
 JV6572_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2800846439(NAD 83)
 JV6572
 JV6572                          SUPERSEDED SURVEY CONTROL
 JV6572
 JV6572  NAD 83(1986)-  39 15 00.84541(N)    076 59 35.49390(W) AD(       ) 3
 JV6572  NGVD 29 (02/12/91)  173.2    (m)          568.     (f) VERT ANG       
 JV6572
 JV6572.Superseded values are not recommended for survey control.
 JV6572
 JV6572.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6572.See file dsdata.pdf to determine how the superseded data were derived.
 JV6572
 JV6572_MARKER: DZ = AZIMUTH MARK DISK
 JV6572_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6572_STAMPING: DAYTON 1943 NO 3 1984
 JV6572_MARK LOGO: NGS
 JV6572_PROJECTION: FLUSH
 JV6572_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6572+STABILITY: SURFACE MOTION
 JV6572_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6572+SATELLITE: SATELLITE OBSERVATIONS - January 27, 2021
 JV6572
 JV6572  HISTORY     - Date     Condition        Report By
 JV6572  HISTORY     - 1984     MONUMENTED       NGS
 JV6572  HISTORY     - 20030821 GOOD             GEOCAC
 JV6572  HISTORY     - 20050405 GOOD             USPSQD
 JV6572  HISTORY     - 20210127 GOOD             PROFLN
 JV6572
 JV6572                          STATION DESCRIPTION
 JV6572
 JV6572'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6572'THE MARKER IS LOCATED ABOUT 41.85 KM (26.00 MI) WEST-NORTHWEST OF
 JV6572'BALTIMORE, 26.5 KM (16.45 MI) NORTHWEST OF LAUREL AND 1.5 KM
 JV6572'(0.95 MI) NORTHWEST OF DAYTON.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV6572'TO REACH FROM THE POST OFFICE IN DAYTON, GO NORTHWEST ON TEN OAKS ROAD
 JV6572'FOR 0.4 KM (0.25 MI) TO A CROSSROADS, THIS IS AT THE INTERSECTION OF
 JV6572'TEN OAKS ROAD, GREEN BRIDGE ROAD AND LINTHICUM ROAD.  GO NORTHWEST ON
 JV6572'LINTHICUM ROAD FOR 0.3 KM (0.20 MI) TO HOWARD ROAD.  BEAR RIGHT AND GO
 JV6572'NORTH-NORTHWEST ON LINTHICUM ROAD FOR 0.75 KM (0.45 MI) TO THE AZIMUTH
 JV6572'MARK ON THE LEFT.
 JV6572'THE DISK IS SET IN THE TOP OF THE 0.25 M (0.8 FT) ROUND CONCRETE
 JV6572'MONUMENT WHICH PROJECTS ABOUT 0.15 M (0.5 FT) ABOVE THE SURFACE OF THE
 JV6572'GROUND.  IT IS 55.02 M (180.5 FT) SOUTH OF THE CENTER OF A DRIVE
 JV6572'LEADING TO A HOUSE NUMBERED 4255 LINTHICUM ROAD, 5.67 M (18.6 FT) WEST
 JV6572'OF THE CENTER OF LINTHICUM ROAD, 0.4 M (1.3 FT) NORTH OF A TELEPHONE
 JV6572'POLE NUMBERED 13 AND 0.27 M (0.9 FT) EAST OF A WITNESS POST.
 JV6572
 JV6572                          STATION RECOVERY (2003)
 JV6572
 JV6572'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV6572'RECOVERED IN GOOD CONDITION.
 JV6572
 JV6572                          STATION RECOVERY (2005)
 JV6572
 JV6572'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6572'RECOVERED IN GOOD CONDITION.
 JV6572
 JV6572                          STATION RECOVERY (2021)
 JV6572
 JV6572'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV6572'THE MARK IS JUST SOUTH OF THE CREST OF A HILL, ABOUT 130 FT (39.6 M)
 JV6572'SOUTH-SOUTHEAST ALONG LINTHICUM ROAD FROM THE DRIVEWAY TO HOUSE 4255
 JV6572'EXTENDED OR 110 FT (33.5 M) SOUTH-SOUTHEAST OF A POINT OPPOSITE THE
 JV6572'MAILBOX FOR THAT HOUSE, 6 FT (1.8 M) EAST-NORTHEAST OF A BOARD FENCE,
 JV6572'2 FT (0.6 M) NORTHEAST OF THE NORTHEAST EDGE OF POLE 151, FLUSH WITH
 JV6572'THE GROUND AT THE TOP OF A SMALL BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1320 ***********************************************************************
 HV1320  DESIGNATION -  DC EAST COR ECC RM 1
 HV1320  PID         -  HV1320
 HV1320  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1320  COUNTRY     -  US
 HV1320  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1320
 HV1320                         *CURRENT SURVEY CONTROL
 HV1320  ______________________________________________________________________
 HV1320* NAD 83(1986) POSITION- 38 53 33.09   (N) 076 54 34.48   (W)   HD_HELD1
 HV1320* NAVD 88 ORTHO HEIGHT -    29.48  (+/-2cm)       96.7   (feet) VERTCON3
 HV1320  ______________________________________________________________________
 HV1320  GEOID HEIGHT    -        -32.330 (meters)                     GEOID18
 HV1320  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1320
 HV1320.The horizontal coordinates were determined by differentially corrected
 HV1320.hand held GPS observations or other comparable positioning techniques
 HV1320.and have an estimated accuracy of +/- 3 meters.
 HV1320
 HV1320.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1320.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1320
 HV1320.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1320.GEOID18 height accuracy estimate available here.
 HV1320
 HV1320.The vertical order pertains to the NGVD 29 superseded value.
 HV1320
 HV1320.Click photographs - Photos may exist for this station.
 HV1320
 HV1320;                    North         East    Units  Estimated Accuracy
 HV1320;SPC MD       -   136,079.4     407,844.4     MT  (+/- 3 meters HH1 GPS) 
 HV1320
 HV1320_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3438906583(NAD 83)
 HV1320
 HV1320                          SUPERSEDED SURVEY CONTROL
 HV1320
 HV1320  NGVD 29 (11/26/84)   29.720  (m)           97.51   (f) ADJUSTED    2 0
 HV1320
 HV1320.Superseded values are not recommended for survey control.
 HV1320
 HV1320.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1320.See file dsdata.pdf to determine how the superseded data were derived.
 HV1320
 HV1320_MARKER: DR = REFERENCE MARK DISK
 HV1320_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1320_STAMPING: DC COR NO 1 1934
 HV1320_MARK LOGO: CGS
 HV1320_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1320+STABILITY: SURFACE MOTION
 HV1320
 HV1320  HISTORY     - Date     Condition        Report By
 HV1320  HISTORY     - 1944     MONUMENTED       CGS
 HV1320
 HV1320                          STATION DESCRIPTION
 HV1320
 HV1320'DESCRIBED BY COAST AND GEODETIC SURVEY 1944
 HV1320'AT SEAT PLEASANT.
 HV1320'200 FEET SOUTHEAST OF THE EAST CORNER OF THE DISTRICT OF COLUMBIA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1241 ***********************************************************************
 HV1241  DESIGNATION -  DC EAST CORNER ECC
 HV1241  PID         -  HV1241
 HV1241  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1241  COUNTRY     -  US
 HV1241  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1241
 HV1241                         *CURRENT SURVEY CONTROL
 HV1241  ______________________________________________________________________
 HV1241* NAD 83(1993) POSITION- 38 53 34.09300(N) 076 54 33.01576(W)   ADJUSTED
 HV1241* NAVD 88 ORTHO HEIGHT -    28.165 (meters)       92.40  (feet) ADJUSTED
 HV1241  ______________________________________________________________________
 HV1241  GEOID HEIGHT    -        -32.331 (meters)                     GEOID18
 HV1241  LAPLACE CORR    -         -4.73  (seconds)                    DEFLEC18
 HV1241  DYNAMIC HEIGHT  -         28.149 (meters)       92.35  (feet) COMP
 HV1241  MODELED GRAVITY -    980,082.1   (mgal)                       NAVD 88
 HV1241
 HV1241  HORZ ORDER      -  FIRST
 HV1241  VERT ORDER      -  FIRST     CLASS II
 HV1241
 HV1241.The horizontal coordinates were established by classical geodetic methods
 HV1241.and adjusted by the National Geodetic Survey in November 1994.
 HV1241
 HV1241.The orthometric height was determined by differential leveling and
 HV1241.adjusted by the NATIONAL GEODETIC SURVEY
 HV1241.in June 1991.
 HV1241
 HV1241.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1241.GEOID18 height accuracy estimate available here.
 HV1241
 HV1241.Click photographs - Photos may exist for this station.
 HV1241
 HV1241.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1241
 HV1241.The dynamic height is computed by dividing the NAVD 88
 HV1241.geopotential number by the normal gravity value computed on the
 HV1241.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1241.degrees latitude (g = 980.6199 gals.).
 HV1241
 HV1241.The modeled gravity was interpolated from observed gravity values.
 HV1241
 HV1241. The following values were computed from the NAD 83(1993) position.
 HV1241
 HV1241;                    North         East     Units Scale Factor Converg.
 HV1241;SPC MD       -   136,110.365   407,879.648   MT  0.99994989   +0 03 25.2
 HV1241;SPC MD       -   446,555.42  1,338,185.15   sFT  0.99994989   +0 03 25.2
 HV1241;SPC VA N     - 2,137,297.033 3,638,003.047   MT  0.99995990   +0 59 34.3
 HV1241;SPC VA N     - 7,012,115.35 11,935,681.66   sFT  0.99995990   +0 59 34.3
 HV1241;UTM  18      - 4,306,613.365   334,425.818   MT  0.99993759   -1 11 56.3
 HV1241
 HV1241!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1241!SPC MD       -   1.00000065  x   0.99994989  =   0.99995054
 HV1241!SPC VA N     -   1.00000065  x   0.99995990  =   0.99996055
 HV1241!UTM  18      -   1.00000065  x   0.99993759  =   0.99993824
 HV1241
 HV1241:                Primary Azimuth Mark                     Grid Az
 HV1241:SPC MD       -  DUPONT                                   230 11 01.2
 HV1241:SPC VA N     -  DUPONT                                   229 14 52.1
 HV1241:UTM  18      -  DUPONT                                   231 26 22.7
 HV1241
 HV1241_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3442506613(NAD 83)
 HV1241
 HV1241|---------------------------------------------------------------------|
 HV1241| PID    Reference Object                     Distance      Geod. Az  |
 HV1241|                                                           dddmmss.s |
 HV1241| HV1321 DC EAST CORNER STONE                  6.285 METERS 00504     |
 HV1241| HV7756 NEW YORK WASH AIRWAY BCN 57A        APPROX. 7.0 KM 0051902.8 |
 HV1241| CX2684 DC EAST CORNER RM 2                  47.540 METERS 11529     |
 HV1241| CX2672 DC EAST CORNER AZ MK                               2263820.9 |
 HV1241| CX2683 DC EAST CORNER RM 1                  46.945 METERS 22845     |
 HV1241| HV7581 DUPONT                              APPROX. 3.5 KM 2301426.4 |
 HV1241|---------------------------------------------------------------------|
 HV1241
 HV1241                          SUPERSEDED SURVEY CONTROL
 HV1241
 HV1241  NAD 83(1991)-  38 53 34.09181(N)    076 54 33.01583(W) AD(       ) 1
 HV1241  NAD 83(1986)-  38 53 34.09080(N)    076 54 33.02732(W) AD(       ) 1
 HV1241  NAD 27      -  38 53 33.69300(N)    076 54 34.12000(W) AD(       ) 1
 HV1241  NGVD 29              28.40   (m)           93.2    (f) LEVELING    3  
 HV1241  NGVD 29 (11/26/84)   28.398  (m)           93.17   (f) ADJUSTED    1 2
 HV1241
 HV1241.Superseded values are not recommended for survey control.
 HV1241
 HV1241.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1241.See file dsdata.pdf to determine how the superseded data were derived.
 HV1241
 HV1241_MARKER: DS = TRIANGULATION STATION DISK
 HV1241_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1241_STAMPING: DC E COR 1934
 HV1241_MARK LOGO: CGS
 HV1241_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1241+STABILITY: SURFACE MOTION
 HV1241
 HV1241  HISTORY     - Date     Condition        Report By
 HV1241  HISTORY     - 1934     MONUMENTED       CGS
 HV1241  HISTORY     - 1938     GOOD             CGS
 HV1241  HISTORY     - 1943     GOOD             CGS
 HV1241  HISTORY     - 1951     GOOD             CGS
 HV1241  HISTORY     - 1952     MARK NOT FOUND   CGS
 HV1241  HISTORY     - 1971     GOOD             NGS
 HV1241
 HV1241                          STATION DESCRIPTION
 HV1241
 HV1241'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV1241'THIS IS A FIRST-ORDER STATION LOCATED 300 YARDS S OF SEAT PLEASANT,
 HV1241'MARYLAND, 300 FEET N OF PUBLIC PARK SCHOOL, 20.62 FEET SW OF THE E
 HV1241'CORNER OF THE DISTRICT OF COLUMBIA, 43 FEET NE OF A DRY DITCH AND
 HV1241'59 FEET S OF A SMALL BRANCH.  MARK IS 1- BY 1-FOOT CONCRETE BLOCK
 HV1241'WITH A COAST SURVEY STATION SET IN THE CENTER.
 HV1241'
 HV1241'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV1241'DISKS SET IN CONCRETE.
 HV1241'
 HV1241'REFERENCE MARK NO.1 IS LOCATED 154.02 FEET S OF THE STATION,
 HV1241'12 PACES E OF THE DITCH.  MARK IS 1- BY 1-FOOT BLOCK OF CONCRETE
 HV1241'WITH A BRONZE COAST SURVEY STATION MARK.
 HV1241'
 HV1241'REFERENCE MARK NO.2 IS LOCATED 155.95 FEET W OF THE STATION,
 HV1241'10 FEET E OF A SMALL STREAM.  MARK IS 1- BY 1-FOOT BLOCK OF
 HV1241'CONCRETE, WITH A COAST SURVEY STATION SET IN THE CENTER.
 HV1241'
 HV1241'AZIMUTH MARK IS LOCATED 0.75 MILE W OF THE STATION, ON THE CREST
 HV1241'OF HILL, 9 PACES NW OF THE CENTER LINE OF SOUTHERN AVENUE, 3
 HV1241'PACES S OF THE BOTTOM OF THE CUT.  MARK IS 1- BY 1-FOOT BLOCK
 HV1241'OF CONCRETE WITH A COAST SURVEY STATION MARK SET AT THE CENTER.
 HV1241'
 HV1241'TO REACH FROM WASHINGTON, GO SE TO SEAT PLEASANT, MARYLAND,
 HV1241'HERE FROM THE RAILROAD STATION, GO W 2 BLOCKS TO 61ST STREET, TURN
 HV1241'LEFT ON 61ST STREET AND GO 0.5 MILE TO PUBLIC PARK SCHOOL, AT THE
 HV1241'S END OF THE SCHOOL, TURN LEFT INTO THE SCHOOL DRIVEWAY AND
 HV1241'PASS THE SCHOOL, FOLLOW A DIM TRAIL E TO A DITCH, HERE LEAVE THE
 HV1241'TRUCK AT THE POINT WHERE THE DITCH MAKES A SHARP LEFT TURN.
 HV1241'CROSS THE DITCH AND GO 65 FEET TO THE DISTRICT OF COLUMBIA EAST
 HV1241'CORNER AND THE STATION.
 HV1241'
 HV1241'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV1241
 HV1241                          STATION RECOVERY (1938)
 HV1241
 HV1241'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV1241'THIS STATION RECOVERED.  CHANGE LAST PART OF FIRST PARAGRAPH TO
 HV1241'READ--MARK IS A 1- BY 1-FOOT CONCRETE BLOCK WITH STANDARD
 HV1241'TRIANGULATION DISK.
 HV1241'
 HV1241'TO REACH FROM WASHINGTON, GO TO THE EXTREME E SECTION OF THE
 HV1241'DISTRICT OF COLUMBIA, TO THE COMMUNITY KNOWN AS SEAT PLEASANT,
 HV1241'MARYLAND.  GO S ON THE ROAD WHICH CROSSES THE RAILROAD TRACKS
 HV1241'BETWEEN THE SEAT PLEASANT BANK AND THE SEAT PLEASANT STATION.
 HV1241'THIS BECOMES KNOWN AS NEW ROADWAY S OF TRACKS.  FOLLOW NEW ROADWAY
 HV1241'S AND E FOR ABOUT 1/2 MILE TO THE MARYLAND PARK SCHOOL.  TAKE THE
 HV1241'STREET WHICH IS ON THE NW SIDE OF THE SCHOOL AND GO NE FOR 0.05
 HV1241'MILE.  LEAVE TRUCK HERE AND TAKE TRAIL ACROSS FLATS, NW
 HV1241'FOR 100 YARDS TO DISTRICT OF COLUMBIA E, CORNER STONE WHICH IS
 HV1241'IN A BOTTOM LAND OF WEEDS AND BRUSH, AND IS EASY TO FIND BECAUSE
 HV1241'IT IS SURROUNDED BY A SMALL IRON FENCE.  STATION MAY BE
 HV1241'FOUND FROM HERE.
 HV1241
 HV1241                          STATION RECOVERY (1943)
 HV1241
 HV1241'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV1241'THE STATION WAS RECOVERED AS DESCRIBED EXCEPT THAT THE STANDARD
 HV1241'DISK TRIANGULATION STATION MARK IS STAMPED D.C.E. COR.,1934.
 HV1241'
 HV1241'THE AZIMUTH MARK WAS SEARCHED FOR BUT NOT FOUND, AS THE CUT IN
 HV1241'THIS AREA HAS BEEN WASHED DOWN AND COMPLETELY COVERED THE AREA.  THE
 HV1241'DESCRIPTION IS SO VAGUE THAT NO DEFINITE PLACE COULD BE SEARCHED.
 HV1241'
 HV1241'REFERENCE MARKS 1 AND 2 WERE SEARCHED FOR BUT NOT FOUND AS THE AREA
 HV1241'IN WHICH THESE MARKS WERE LOCATED HAS CHANGED CONSIDERABLY, DUE TO
 HV1241'CONSTRUCTION OF NEW ROADS AND HOUSES.
 HV1241'
 HV1241'TO REACH THE STATION FROM THE BANK AND RAILROAD STATION IN
 HV1241'SEAT PLEASANT, HEAD SOUTHWEST ACROSS THE CAR TRACKS, TURN
 HV1241'SOUTHEAST ON NEWLY CONSTRUCTED FILL AND CUT.  GO 500 YARDS TO RIGHT
 HV1241'ANGLE TURN.  STATION IS 8 YARDS SOUTHEAST OF THE CORNER OF THE
 HV1241'FILL.
 HV1241
 HV1241                          STATION RECOVERY (1951)
 HV1241
 HV1241'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 HV1241'AT SEAT PLEASANT.
 HV1241'AT SEAT PLEASANT, PRINCE GEORGES COUNTY, NEAR THE EAST CORNER
 HV1241'OF THE DISTRICT OF COLUMBIA, 20.7 FEET SOUTH OF THE DISTRICT
 HV1241'CORNER, AND IN BOTTOM LAND.  A STANDARD TRIANGULATION-STATION
 HV1241'DISK, STAMPED DC E COR 1934 AND SET IN THE TOP OF A CONCRETE POST
 HV1241'FLUSH WITH THE GROUND.
 HV1241
 HV1241                          STATION RECOVERY (1952)
 HV1241
 HV1241'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (HSR)
 HV1241'STATION RECOVERED FLUSH WITH THE GROUND, 20.62 FT. S OF
 HV1241'DISTRICT OF COLUMBIA EAST CORNER BOUNDARY STONE.  MARK IS
 HV1241'178.5 FT. E OF THE NEAREST CORNER OF THE BRICK HOUSE AT 6342
 HV1241'SOUTHERN AVENUE.  ROUTE TO STATION OBSOLETE IN THE ORIGINAL
 HV1241'DESCRIPTION AS BOTH EASTERN AND SOUTHERN AVENUES ARE NOW PAVED
 HV1241'NEAR THE E D.C. CORNER.  CAR OR TRUCK CAN NOW BE DRIVEN TO WITHIN
 HV1241'25 OR 30 YD. OF THE STATION ALONG EITHER STREET.
 HV1241'
 HV1241'NEITHER REFERENCE MARKS 1 OR 2 OR THE AZIMUTH MARK WERE
 HV1241'RECOVERED.  ACCORDING TO DATA, REFERENCE MARK 2 WAS LOCATED IN AN
 HV1241'AREA NOW OVERGROWN BY VINES, BRIARS, AND BRUSH.  AN AREA OF
 HV1241'SEVERAL FEET WAS DUG OVER IN THE POSITION, WHERE THE DISTANCE AND
 HV1241'DIRECTION PLACED REFERENCE MARK 1.  THE AZIMUTH MARK IS
 HV1241'APPARENTLY COVERED BY DIRT FROM THE CUT BANK.  THE DISTANCE
 HV1241'FROM THE CENTER OF THE ROAD PLACES THE MARK UNDER 2 OR 3 FT. OF
 HV1241'DIRT.  AS THERE IS NO DEFINITE CREST OF THE HILL, CONSIDERABLE
 HV1241'DIGGING WOULD BE REQUIRED TO UNCOVER IT IF STILL IN PLACE.
 HV1241'
 HV1241'IT SHOULD BE NOTED THAT THERE IS CONFUSION IN THE DIRECTIONS
 HV1241'GIVEN TO THE MARKS IN THE ORIGINAL DESCRIPTION.  AZIMUTHS
 HV1241'SHOW THAT THE STATION IS S NOT SW OF THE E D.C. CORNER STONE,
 HV1241'REFERENCE MARK 1 WAS SW OF THE STATION, REFERENCE MARK 2 WAS
 HV1241'SE, AND THE AZIMUTH MARK WAS SW.  A SKETCH IN THE FIELDBOOK
 HV1241'LABELS THE REFERENCE MARK SE OF THE STATION AS REFERENCE
 HV1241'MARK 1, 154.02 FT. FROM THE STATION, AND THE ONE SW AS 155.97
 HV1241'FT. FROM THE STATION.
 HV1241
 HV1241                          STATION RECOVERY (1971)
 HV1241
 HV1241'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 HV1241'THIS STATION WAS NOT OCCUPIED FOR DIRECTION, THERE WERE NO VISIBLE
 HV1241'DISTANT OBJECTS VISIBLE FROM THE GROUND AND THE LINE TO REFERENCE
 HV1241'MARK NO. 2 WAS OBSTRUCTED BY A LARGE 8 FOOT TALL TILE ON LINE.
 HV1241'
 HV1241'THE STATION IS LOCATED AT THE EAST CORNER OF THE DISTRICT OF
 HV1241'COLUMBIA AND WAS FOUND TO BE IN GOOD CONDITION.  HOWEVER, SOME
 HV1241'DIFFERENCES WERE FOUND FROM THE 1934 DESCRIPTION--REFERENCE MARKS
 HV1241'NO. 1 AND NO. 2 WERE REVERSED IN THE BOX SCORE OF THE 1934
 HV1241'DESCRIPTION AND ARE AS SHOWN ABOVE.
 HV1241'
 HV1241'THE AZIMUTH MARK HAS BEEN DESTROYED.
 HV1241'
 HV1241'REFERENCE MARK NO. 1 IS WOODS, 105 FEET SOUTH OF THE CENTER OF
 HV1241'A CLEARED RIGHT-OF-WAY STRIP THROUGH WOODS, 43.2 FEET EAST OF THE
 HV1241'NORTHWEST CORNER OF A GARAGE, AND 33.5 FEET NORTHEAST OF THE
 HV1241'NORTHEAST CORNER OF GARAGE.  IT IS SET FLUSH WITH THE GROUND
 HV1241'SURFACE AND THE DISK IS STAMPED, D.C. COR NO 1 1934.
 HV1241'
 HV1241'REFERENCE MARK NO. 2 IS AT THE FOOT OF A FILL, 81.5 FEET
 HV1241'SOUTHEAST OF WHERE THE WALK FROM HOUSE NO. 634 JOINS THE
 HV1241'SIDEWALK, 72 FEET SOUTHEAST OF UTILITY POLE NO. 527871, AND 24
 HV1241'FEET NORTHWEST OF A DITCH.  THE MARK IS ABOUT 12 INCHES BELOW
 HV1241'THE SURFACE OF THE GROUND AND THE DISK IS STAMPED D.C. E. COR NO
 HV1241'2 1934, AND THE ARROW IS POINTING APPROXIMATELY 90 DEG
 HV1241'TO THE WEST OF THE STATION.
 HV1241'
 HV1241'THE STATION CAN BE REACHED BY GOING NORTHEAST ON SOUTHERN AVENUE
 HV1241'TO THE EAST CORNER OF THE DISTRICT OF COLUMBIA AND THE STATION
 HV1241'ON THE RIGHT, 108 FEET EAST FROM THE CENTER OF THE SOUTH ONE OF TWO
 HV1241'SQUARE GAS MANHOLE COVERS THAT ARE IN THE CENTER OF THE STREET AND
 HV1241'20.6 FEET SOUTH OF THE DISTRICT OF COLUMBIA EAST CORNER BOUNDARY
 HV1241'MARKER THAT IS ENCLOSED IN AN IRON FENCE.
 HV1241'
 HV1241'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV1241'AT EAST CORNER OF D.C.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1321 ***********************************************************************
 HV1321  DESIGNATION -  DC EAST CORNER STONE
 HV1321  PID         -  HV1321
 HV1321  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1321  COUNTRY     -  US
 HV1321  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1321
 HV1321                         *CURRENT SURVEY CONTROL
 HV1321  ______________________________________________________________________
 HV1321* NAD 83(1993) POSITION- 38 53 34.29601(N) 076 54 32.99270(W)   ADJUSTED
 HV1321* NAVD 88 ORTHO HEIGHT -    28.85  (+/-2cm)       94.7   (feet) VERTCON3
 HV1321  ______________________________________________________________________
 HV1321  GEOID HEIGHT    -        -32.331 (meters)                     GEOID18
 HV1321  LAPLACE CORR    -         -4.73  (seconds)                    DEFLEC18
 HV1321  HORZ ORDER      -  SECOND
 HV1321  VERT ORDER      -  SECOND    CLASS 0 (See Below)
 HV1321
 HV1321.The horizontal coordinates were established by classical geodetic methods
 HV1321.and adjusted by the National Geodetic Survey in November 1994.
 HV1321
 HV1321.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1321.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1321
 HV1321.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1321.GEOID18 height accuracy estimate available here.
 HV1321
 HV1321.The vertical order pertains to the NGVD 29 superseded value.
 HV1321
 HV1321.Click photographs - Photos may exist for this station.
 HV1321
 HV1321.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1321
 HV1321. The following values were computed from the NAD 83(1993) position.
 HV1321
 HV1321;                    North         East     Units Scale Factor Converg.
 HV1321;SPC MD       -   136,116.626   407,880.198   MT  0.99994989   +0 03 25.2
 HV1321;SPC MD       -   446,575.96  1,338,186.95   sFT  0.99994989   +0 03 25.2
 HV1321;SPC VA N     - 2,137,303.301 3,638,003.494   MT  0.99995990   +0 59 34.3
 HV1321;SPC VA N     - 7,012,135.91 11,935,683.13   sFT  0.99995990   +0 59 34.3
 HV1321;UTM  18      - 4,306,619.612   334,426.505   MT  0.99993758   -1 11 56.3
 HV1321
 HV1321!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1321!SPC MD       -   1.00000055  x   0.99994989  =   0.99995044
 HV1321!SPC VA N     -   1.00000055  x   0.99995990  =   0.99996045
 HV1321!UTM  18      -   1.00000055  x   0.99993758  =   0.99993813
 HV1321
 HV1321_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3442606619(NAD 83)
 HV1321
 HV1321                          SUPERSEDED SURVEY CONTROL
 HV1321
 HV1321  NAD 83(1991)-  38 53 34.29483(N)    076 54 32.99276(W) AD(       ) 2
 HV1321  NAD 83(1986)-  38 53 34.29381(N)    076 54 33.00425(W) AD(       ) 2
 HV1321  NAD 27      -  38 53 33.89600(N)    076 54 34.09700(W) AD(       ) 2
 HV1321  USSD        -  38 53 34.23000(N)    076 54 33.94000(W) AD(       ) 3
 HV1321  NGVD 29 (11/26/84)   29.090  (m)           95.44   (f) ADJUSTED    2 0
 HV1321
 HV1321.Superseded values are not recommended for survey control.
 HV1321
 HV1321.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1321.See file dsdata.pdf to determine how the superseded data were derived.
 HV1321
 HV1321_MARKER: 71 = BOUNDARY MONUMENT
 HV1321
 HV1321  HISTORY     - Date     Condition        Report By
 HV1321  HISTORY     - 1792     FIRST OBSERVED   LOCSUR
 HV1321  HISTORY     - 1884     GOOD             CGS
 HV1321  HISTORY     - 1944     GOOD             WSSC
 HV1321  HISTORY     - 1971     GOOD             NGS
 HV1321
 HV1321                          STATION DESCRIPTION
 HV1321
 HV1321'DESCRIBED BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1792 (AE)
 HV1321'THIS MONUMENT WAS ESTABLISHED BY ANDREW ELLICOTT DURING THE DC
 HV1321'BOUNDARY SURVEY.
 HV1321
 HV1321                          STATION RECOVERY (1884)
 HV1321
 HV1321'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1884 (CHS)
 HV1321'THIS STATION IS DOWN IN THE BOTTOM, ON THE E SIDE OF A STREAM.
 HV1321'IT IS MARKED BY A STONE 12 INCHES SQUARE AND EXTENDING 2 FEET
 HV1321'ABOVE GROUND.
 HV1321
 HV1321                          STATION RECOVERY (1944)
 HV1321
 HV1321'RECOVERY NOTE BY WASH SUBURB SAN COMM 1944
 HV1321'AT SEAT PLEASANT.
 HV1321'AT THE EAST CORNER OF THE DISTRICT OF COLUMBIA, AND ON TOP OF THE
 HV1321'STONE IN AN IRON CAGE.
 HV1321
 HV1321                          STATION RECOVERY (1971)
 HV1321
 HV1321'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 HV1321'STATION AT THE EAST CORNER OF THE DISTRICT OF COLUMBIA AND
 HV1321'PRINCE GEORGES COUNTY MARYLAND, ON LOW GROUND IN WOODED
 HV1321'AREA ON TH EAST SIDE OF A SMALL STREAM.  IT IS MARKED BY A
 HV1321'STONE 12 INCHES SQUARE AND EXTENDING 2 FEET ABOVE GROUND AND
 HV1321'IS ENCLOSED BY AN IRON FENCE.  IT IS ALSO 108 FEET EAST OF
 HV1321'TWO SQUARE GAS MANHOLE COVERES IN CENTER OF CURVE IN STREEET
 HV1321'AND 51 FEET EAST OF THE CENTER OF LID TO A LARGE SEWER MANHOLE
 HV1321'COVER IN A SODED AREA.
 HV1321'
 HV1321'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN WASHINGTON,
 HV1321'D.C.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR1631 ***********************************************************************
 DR1631  DESIGNATION -  DCS
 DR1631  PID         -  DR1631
 DR1631  STATE/COUNTY-  MD/HARFORD
 DR1631  COUNTRY     -  US
 DR1631  USGS QUAD   -  EDGEWOOD (2016)
 DR1631
 DR1631                         *CURRENT SURVEY CONTROL
 DR1631  ______________________________________________________________________
 DR1631* NAD 83(1986) POSITION- 39 25 23.8    (N) 076 22 17.6    (W)   HD_HELD2
 DR1631* NAVD 88 ORTHO HEIGHT -     9.178 (meters)       30.11  (feet) ADJUSTED
 DR1631  ______________________________________________________________________
 DR1631  GEOID HEIGHT    -        -33.004 (meters)                     GEOID18
 DR1631  DYNAMIC HEIGHT  -          9.173 (meters)       30.10  (feet) COMP
 DR1631  MODELED GRAVITY -    980,102.2   (mgal)                       NAVD 88
 DR1631
 DR1631  VERT ORDER      -  SECOND    CLASS I
 DR1631
 DR1631.The horizontal coordinates were established by autonomous hand held GPS
 DR1631.observations and have an estimated accuracy of +/- 10 meters.
 DR1631
 DR1631.The orthometric height was determined by differential leveling and
 DR1631.adjusted by the NATIONAL GEODETIC SURVEY
 DR1631.in May 2019.
 DR1631
 DR1631.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR1631.GEOID18 height accuracy estimate available here.
 DR1631
 DR1631.Click photographs - Photos may exist for this station.
 DR1631
 DR1631.The dynamic height is computed by dividing the NAVD 88
 DR1631.geopotential number by the normal gravity value computed on the
 DR1631.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR1631.degrees latitude (g = 980.6199 gals.).
 DR1631
 DR1631.The modeled gravity was interpolated from observed gravity values.
 DR1631
 DR1631;                    North         East    Units  Estimated Accuracy
 DR1631;SPC MD       -   195,183.      454,113.      MT  (+/- 10 meters HH2 GPS)
 DR1631
 DR1631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8194364647(NAD 83)
 DR1631
 DR1631                          SUPERSEDED SURVEY CONTROL
 DR1631
 DR1631.No superseded survey control is available for this station.
 DR1631
 DR1631_MARKER: DD = SURVEY DISK
 DR1631_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 DR1631_SP_SET: MASSIVE TRAFFIC LIGHT POLE BASE
 DR1631_STAMPING: DCS 2018
 DR1631_MARK LOGO: MDSHA
 DR1631_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR1631_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR1631_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR1631+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2021
 DR1631
 DR1631  HISTORY     - Date     Condition        Report By
 DR1631  HISTORY     - 2018     MONUMENTED       MDSHA
 DR1631  HISTORY     - 20190411 GOOD             MDSHA
 DR1631  HISTORY     - 20210909 GOOD             MDSHA
 DR1631
 DR1631                          STATION DESCRIPTION
 DR1631
 DR1631'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (EBD)
 DR1631'THE MARK IS LOCATED ABOUT 7.1 MI (11.4 KM) NORTH-NORTHEAST OF MIDDLE
 DR1631'RIVER, 4.3 MI (6.9 KM) NORTHEAST OF WHITE MARSH AND 4.1 MI (6.6 KM)
 DR1631'WEST OF EDGEWOOD.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DR1631'
 DR1631'TO REACH FROM THE INTERCHANGE OF MD 43 AND US 40, TO NORTHEAST ON US
 DR1631'40 FOR 4.71 MI (7.58 KM) TO THE JUNCTION OF JOPPA FARM ROAD AND THE
 DR1631'MARK ON THE LEFT.
 DR1631'
 DR1631'IT IS 57.3 FT (17.5 M) SOUTHWEST OF THE CENTERLINE OF JOPPA FARM ROAD,
 DR1631'43.0 FT (13.1 M) SOUTHEAST OF THE CENTERLINE OF A DRIVEWAY, 40.0 FT
 DR1631'(12.2 M) NORTHWEST OF THE CENTERLINE OF THE SOUTHBOUND ROADWAY OF US
 DR1631'40, 24.3 FT (7.4 M) SOUTH OF UTILITY POLE NUMBER 293978/7058, 10.5 FT
 DR1631'(3.2 M) SOUTHWEST OF A LARGE TRAFFIC CONTROL CABINET AND ABOUT LEVEL
 DR1631'WITH THE HIGHWAY.
 DR1631
 DR1631                          STATION RECOVERY (2021)
 DR1631
 DR1631'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR1631'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0729 ***********************************************************************
 JV0729  DESIGNATION -  DD 44
 JV0729  PID         -  JV0729
 JV0729  STATE/COUNTY-  MD/HOWARD
 JV0729  COUNTRY     -  US
 JV0729  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0729
 JV0729                         *CURRENT SURVEY CONTROL
 JV0729  ______________________________________________________________________
 JV0729* NAD 83(1986) POSITION- 39 17 00.     (N) 076 47 10.     (W)   SCALED
 JV0729* NAVD 88 ORTHO HEIGHT -    51.524 (meters)      169.04  (feet) ADJUSTED
 JV0729  ______________________________________________________________________
 JV0729  GEOID HEIGHT    -        -32.237 (meters)                     GEOID18
 JV0729  DYNAMIC HEIGHT  -         51.497 (meters)      168.95  (feet) COMP
 JV0729  MODELED GRAVITY -    980,111.0   (mgal)                       NAVD 88
 JV0729
 JV0729  VERT ORDER      -  FIRST     CLASS II
 JV0729
 JV0729.The horizontal coordinates were scaled from a map and have
 JV0729.an estimated accuracy of +/- 6 seconds.
 JV0729
 JV0729.The orthometric height was determined by differential leveling and
 JV0729.adjusted by the NATIONAL GEODETIC SURVEY
 JV0729.in June 1991.
 JV0729
 JV0729.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0729.GEOID18 height accuracy estimate available here.
 JV0729
 JV0729.Click photographs - Photos may exist for this station.
 JV0729
 JV0729.The dynamic height is computed by dividing the NAVD 88
 JV0729.geopotential number by the normal gravity value computed on the
 JV0729.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0729.degrees latitude (g = 980.6199 gals.).
 JV0729
 JV0729.The modeled gravity was interpolated from observed gravity values.
 JV0729
 JV0729;                    North         East    Units  Estimated Accuracy
 JV0729;SPC MD       -   179,480.      418,450.      MT  (+/- 180 meters Scaled)
 JV0729
 JV0729_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ459497(NAD 83)
 JV0729
 JV0729                          SUPERSEDED SURVEY CONTROL
 JV0729
 JV0729  NGVD 29 (11/26/84)   51.744  (m)          169.76   (f) ADJUSTED    1 2
 JV0729
 JV0729.Superseded values are not recommended for survey control.
 JV0729
 JV0729.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0729.See file dsdata.pdf to determine how the superseded data were derived.
 JV0729
 JV0729_MARKER: DB = BENCH MARK DISK
 JV0729_SETTING: 80 = SET IN A BOULDER
 JV0729_STAMPING: DD 44 1941
 JV0729_MARK LOGO: CGS
 JV0729_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0729+STABILITY: SURFACE MOTION
 JV0729
 JV0729  HISTORY     - Date     Condition        Report By
 JV0729  HISTORY     - 1941     MONUMENTED       CGS
 JV0729  HISTORY     - 19980520 MARK NOT FOUND   MDSHA
 JV0729
 JV0729                          STATION DESCRIPTION
 JV0729
 JV0729'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0729'1.2 MI N FROM ELLICOTT CITY.
 JV0729'ABOUT 1.2 MILES NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV0729'ELLICOTT CITY, HOWARD COUNTY, ABOUT 1 POLE SOUTH OF THE FIFTEENTH
 JV0729'POLE NORTH OF MILEPOST 16, 30.3 FEET WEST OF POLE L 8, 64 FEET
 JV0729'NORTH OF A SMALL STREAM, 46.0 FEET WEST OF THE WEST TRACK, AND IN
 JV0729'THE TOP OF A 3-FOOT STONE BOULDER PROJECTING ABOUT 6 INCHES ABOVE
 JV0729'GROUND.  A STANDARD DISK, STAMPED DD 44 1941.
 JV0729
 JV0729                          STATION RECOVERY (1998)
 JV0729
 JV0729'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV0729'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5640 ***********************************************************************
 JV5640  DESIGNATION -  DE SALES CUPOLA
 JV5640  PID         -  JV5640
 JV5640  STATE/COUNTY-  MD/BALTIMORE
 JV5640  COUNTRY     -  US
 JV5640  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5640
 JV5640                         *CURRENT SURVEY CONTROL
 JV5640  ______________________________________________________________________
 JV5640* NAD 83(1991) POSITION- 39 17 06.59401(N) 076 43 18.89796(W)   ADJUSTED
 JV5640* NAVD 88 ORTHO HEIGHT -   149.    (meters)      489.    (feet) SCALED
 JV5640  ______________________________________________________________________
 JV5640  GEOID HEIGHT    -        -32.374 (meters)                     GEOID18
 JV5640  LAPLACE CORR    -         -6.28  (seconds)                    DEFLEC18
 JV5640  HORZ ORDER      -  FIRST
 JV5640
 JV5640.The horizontal coordinates were established by classical geodetic methods
 JV5640.and adjusted by the National Geodetic Survey in January 1992.
 JV5640
 JV5640.The orthometric height was scaled from a topographic map.
 JV5640
 JV5640.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5640.GEOID18 height accuracy estimate available here.
 JV5640
 JV5640.Click photographs - Photos may exist for this station.
 JV5640
 JV5640.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5640
 JV5640. The following values were computed from the NAD 83(1991) position.
 JV5640
 JV5640;                    North         East     Units Scale Factor Converg.
 JV5640;SPC MD       -   179,700.044   423,991.785   MT  0.99997532   +0 10 28.3
 JV5640;SPC MD       -   589,565.89  1,391,046.38   sFT  0.99997532   +0 10 28.3
 JV5640;UTM  18      - 4,349,835.643   351,492.140   MT  0.99987155   -1 05 25.7
 JV5640
 JV5640!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5640!SPC MD       -   0.99998174  x   0.99997532  =   0.99995706
 JV5640!UTM  18      -   0.99998174  x   0.99987155  =   0.99985329
 JV5640
 JV5640_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5149249835(NAD 83)
 JV5640
 JV5640                          SUPERSEDED SURVEY CONTROL
 JV5640
 JV5640  NAD 83(1986)-  39 17 06.59105(N)    076 43 18.90650(W) AD(       ) 1
 JV5640  NAD 27      -  39 17 06.20500(N)    076 43 20.00900(W) AD(       ) 1
 JV5640  USSD        -  39 17 06.58300(N)    076 43 19.84300(W) AD(       ) 3
 JV5640
 JV5640.Superseded values are not recommended for survey control.
 JV5640
 JV5640.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5640.See file dsdata.pdf to determine how the superseded data were derived.
 JV5640
 JV5640_MARKER: 86 = CUPOLA
 JV5640
 JV5640  HISTORY     - Date     Condition        Report By
 JV5640  HISTORY     - 1916     FIRST OBSERVED   CGS
 JV5640  HISTORY     - 1940     GOOD             CGS
 JV5640  HISTORY     - 1957     GOOD             CGS
 JV5640  HISTORY     - 19950621 GOOD             USPSQD
 JV5640  HISTORY     - 20030921 GOOD             USPSQD
 JV5640  HISTORY     - 20041003 GOOD             USPSQD
 JV5640
 JV5640                          STATION DESCRIPTION
 JV5640
 JV5640'DESCRIBED BY COAST AND GEODETIC SURVEY 1940
 JV5640'STATION IS ON CENTER OF DOME OF MT. DE SALES ACADEMY OF THE
 JV5640'VISITATION.  LOCATED ON THE N SIDE OF EDMONDSON AVENUE, E OF
 JV5640'NUNNERY LANE.
 JV5640
 JV5640                          STATION RECOVERY (1957)
 JV5640
 JV5640'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5640'THE STATION IS LOCATED ABOUT 5-1/2 MI. W OF THE CENTER OF BALTIMORE
 JV5640'AND ABOUT 1-1/2 MI. N OF CATONSVILLE.  IT IS ON TOP OF A LARGE
 JV5640'BRICK BUILDING WITH A RED ROOF.  THE CUPOLA IS PAINTED WHITE WITH
 JV5640'A RED TOP AND HAS A LARGE GOLD CROSS ON THE TOP.  IT IS
 JV5640'APPROXIMATELY 100 FT. HIGH.
 JV5640'
 JV5640'THE POINT INTERSECTED WAS THE CROSS ON THE TOP.
 JV5640'
 JV5640'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV5640'ROLLING ROAD, GO E ON U.S. HIGHWAY 40 FOR 0.7 MI. TO
 JV5640'W.I.T.H. RADIO TOWER ON RIGHT, CONTINUE E ON U.S. HIGHWAY 40 FOR
 JV5640'0.7 MI. TO ACADEMY ROAD, TURN RIGHT ON ACADEMY ROAD FOR 0.05
 JV5640'MI. TO CROSSROADS, CONTINUE STRAIGHT AHEAD ON ACADEMY ROAD FOR
 JV5640'0.25 MI. TO THE MT. DE SALES CATHOLIC SCHOOL ON RIGHT AND
 JV5640'STATION AS DESCRIBED.
 JV5640'
 JV5640'PROBABLY THE SAME STATION AS DE SALES CUPOLA, 1916.
 JV5640
 JV5640                          STATION RECOVERY (1995)
 JV5640
 JV5640'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5640'RECOVERED IN GOOD CONDITION.
 JV5640
 JV5640                          STATION RECOVERY (2003)
 JV5640
 JV5640'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5640'RECOVERED IN GOOD CONDITION.  NOTE-- ACCESS TO THE GROUNDS MAY BE HAD
 JV5640'BY PASSING UNDER A WHITE PAINTED BRICK ARCHWAY AT 700 ACADEMY ROAD.
 JV5640
 JV5640                          STATION RECOVERY (2004)
 JV5640
 JV5640'RECOVERY NOTE BY US POWER SQUADRON 2004 (CLB)
 JV5640'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7996 ***********************************************************************
 AJ7996  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7996  DESIGNATION -  DEAL
 AJ7996  PID         -  AJ7996
 AJ7996  STATE/COUNTY-  MD/SOMERSET
 AJ7996  COUNTRY     -  US
 AJ7996  USGS QUAD   -  DEAL ISLAND (2016)
 AJ7996
 AJ7996                         *CURRENT SURVEY CONTROL
 AJ7996  ______________________________________________________________________
 AJ7996* NAD 83(2011) POSITION- 38 09 26.20853(N) 075 56 56.34606(W)   ADJUSTED
 AJ7996* NAD 83(2011) ELLIP HT-   -33.779 (meters)        (06/27/12)   ADJUSTED
 AJ7996* NAD 83(2011) EPOCH   -  2010.00
 AJ7996* NAVD 88 ORTHO HEIGHT -     2.018 (meters)        6.62  (feet) ADJUSTED
 AJ7996  ______________________________________________________________________
 AJ7996  GEOID HEIGHT    -        -35.797 (meters)                     GEOID18
 AJ7996  NAD 83(2011) X  -  1,219,181.521 (meters)                     COMP
 AJ7996  NAD 83(2011) Y  - -4,871,388.164 (meters)                     COMP
 AJ7996  NAD 83(2011) Z  -  3,919,165.245 (meters)                     COMP
 AJ7996  LAPLACE CORR    -         -2.28  (seconds)                    DEFLEC18
 AJ7996  DYNAMIC HEIGHT  -          2.017 (meters)        6.62  (feet) COMP
 AJ7996  MODELED GRAVITY -    979,984.2   (mgal)                       NAVD 88
 AJ7996
 AJ7996  VERT ORDER      -  SECOND    CLASS I
 AJ7996
 AJ7996  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7996  Standards:
 AJ7996         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7996            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7996  -------------------------------------------------------------------
 AJ7996  NETWORK    0.54   1.06           0.24   0.20   0.54     -0.01317794
 AJ7996  -------------------------------------------------------------------
 AJ7996  Click here for local accuracies and other accuracy information.
 AJ7996
 AJ7996.The horizontal coordinates were established by GPS observations
 AJ7996.and adjusted by the National Geodetic Survey in June 2012.
 AJ7996
 AJ7996.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7996.been affixed to the stable North American tectonic plate. See 
 AJ7996.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7996
 AJ7996.The horizontal coordinates are valid at the epoch date displayed above
 AJ7996.which is a decimal equivalence of Year/Month/Day.
 AJ7996
 AJ7996.The orthometric height was determined by differential leveling and
 AJ7996.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7996.in June 2003.
 AJ7996
 AJ7996.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7996.GEOID18 height accuracy estimate available here.
 AJ7996
 AJ7996.Click photographs - Photos may exist for this station.
 AJ7996
 AJ7996.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7996
 AJ7996.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7996
 AJ7996.The ellipsoidal height was determined by GPS observations
 AJ7996.and is referenced to NAD 83.
 AJ7996
 AJ7996.The dynamic height is computed by dividing the NAVD 88
 AJ7996.geopotential number by the normal gravity value computed on the
 AJ7996.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7996.degrees latitude (g = 980.6199 gals.).
 AJ7996
 AJ7996.The modeled gravity was interpolated from observed gravity values.
 AJ7996
 AJ7996. The following values were computed from the NAD 83(2011) position.
 AJ7996
 AJ7996;                    North         East     Units Scale Factor Converg.
 AJ7996;SPC MD       -    54,990.901   492,116.262   MT  1.00002789   +0 39 34.8
 AJ7996;SPC MD       -   180,415.98  1,614,551.44   sFT  1.00002789   +0 39 34.8
 AJ7996;UTM  18      - 4,223,691.223   416,859.003   MT  0.99968513   -0 35 10.8
 AJ7996
 AJ7996!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7996!SPC MD       -   1.00000530  x   1.00002789  =   1.00003319
 AJ7996!UTM  18      -   1.00000530  x   0.99968513  =   0.99969043
 AJ7996
 AJ7996_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1685923691(NAD 83)
 AJ7996
 AJ7996                          SUPERSEDED SURVEY CONTROL
 AJ7996
 AJ7996  NAD 83(2007)-  38 09 26.20878(N)    075 56 56.34681(W) AD(2002.00) 0
 AJ7996  ELLIP H (02/10/07)  -33.751  (m)                       GP(2002.00)    
 AJ7996  NAD 83(1991)-  38 09 26.20868(N)    075 56 56.34672(W) AD(       ) A
 AJ7996  ELLIP H (02/12/02)  -33.744  (m)                       GP(       ) 4 1
 AJ7996  NAVD 88 (02/12/02)    2.0    (m)  GEOID99  model used  GPS OBS        
 AJ7996
 AJ7996.Superseded values are not recommended for survey control.
 AJ7996
 AJ7996.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7996.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7996
 AJ7996_MARKER: DD = SURVEY DISK
 AJ7996_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7996_STAMPING: DEAL 2000
 AJ7996_MARK LOGO: MDSHA
 AJ7996_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ7996_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7996+STABILITY: SURFACE MOTION
 AJ7996_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7996+SATELLITE: SATELLITE OBSERVATIONS - April 02, 2001
 AJ7996
 AJ7996  HISTORY     - Date     Condition        Report By
 AJ7996  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ7996  HISTORY     - 20010402 GOOD             MDSHA
 AJ7996
 AJ7996                          STATION DESCRIPTION
 AJ7996
 AJ7996'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7996'THE STATION IS LOCATED ABOUT 13.1 MILES (21.1 KM) NORTH OF CRISFIELD,
 AJ7996'14.0 MILES (22.5 KM) SOUTHWEST OF PRINCESS ANNE, AND 22.0 MILES (35.4
 AJ7996'KM) EAST OF POINT LOOKOUT AT DEAL ISLAND.  TO REACH THE STATION FROM
 AJ7996'THE SOUTHWEST END OF THE STATE HIGHWAY 363 BRIDGE OVER LAWS COVE AT
 AJ7996'THE NORTH END OF DEAL ISLAND, GO SOUTH ALONG STATE HIGHWAY 363 FOR 0.7
 AJ7996'MILES (1.1 KM) TO A BASEBALL FIELD AND THE STATION ON THE LEFT. THE
 AJ7996'STATION IS A STANDARD MARYLAND STATE HIGHWAY SURVEY DISK SET IN THE
 AJ7996'TOP OF A 12 INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 AJ7996'GROUND.  IT IS 38.2 FEET (11.6 M) EAST OF THE CENTER LINE OF THE
 AJ7996'HIGHWAY, 53.2 FEET (16.2 M) NORTHEAST OF TELEPHONE POLE NUMBER 9, 61.0
 AJ7996'FEET (18.6 M) NORTH OF THE NORTHWEST CORNER OF A BLOCK BASEBALL
 AJ7996'DUGOUT, 81.5 FEET (24.8 M) SOUTHEAST AND ACROSS THE HIGHWAY FROM POWER
 AJ7996'POLE NUMBER 36747-85660, 85.0 FEET (25.9 M) SOUTHEAST OF TELEPHONE
 AJ7996'POLE NUMBER 8, AND ABOUT LEVEL WITH THE SURFACE OF THE HIGHWAY.
 AJ7996
 AJ7996                          STATION RECOVERY (2001)
 AJ7996
 AJ7996'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ7996'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1906 ***********************************************************************
 HU1906  DESIGNATION -  DEAL 2
 HU1906  PID         -  HU1906
 HU1906  STATE/COUNTY-  MD/SOMERSET
 HU1906  COUNTRY     -  US
 HU1906  USGS QUAD   -  DEAL ISLAND (2016)
 HU1906
 HU1906                         *CURRENT SURVEY CONTROL
 HU1906  ______________________________________________________________________
 HU1906* NAD 83(1993) POSITION- 38 08 10.77915(N) 075 57 35.44434(W)   ADJUSTED
 HU1906* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1906  ______________________________________________________________________
 HU1906  GEOID HEIGHT    -        -35.812 (meters)                     GEOID18
 HU1906  LAPLACE CORR    -         -2.03  (seconds)                    DEFLEC18
 HU1906  HORZ ORDER      -  THIRD
 HU1906
 HU1906.The horizontal coordinates were established by classical geodetic methods
 HU1906.and adjusted by the National Geodetic Survey in November 1994.
 HU1906
 HU1906.The orthometric height was scaled from a topographic map.
 HU1906
 HU1906.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1906.GEOID18 height accuracy estimate available here.
 HU1906
 HU1906.Click photographs - Photos may exist for this station.
 HU1906
 HU1906.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1906
 HU1906. The following values were computed from the NAD 83(1993) position.
 HU1906
 HU1906;                    North         East     Units Scale Factor Converg.
 HU1906;SPC MD       -    52,654.356   491,190.922   MT  1.00003250   +0 39 10.2
 HU1906;SPC MD       -   172,750.17  1,611,515.55   sFT  1.00003250   +0 39 10.2
 HU1906;UTM  18      - 4,221,376.145   415,883.418   MT  0.99968714   -0 35 34.0
 HU1906
 HU1906!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1906!SPC MD       -   1.00000566  x   1.00003250  =   1.00003816
 HU1906!UTM  18      -   1.00000566  x   0.99968714  =   0.99969280
 HU1906
 HU1906:                Primary Azimuth Mark                     Grid Az
 HU1906:SPC MD       -  THOMAS                                   154 27 30.9
 HU1906:UTM  18      -  THOMAS                                   155 42 15.1
 HU1906
 HU1906_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1588321376(NAD 83)
 HU1906
 HU1906|---------------------------------------------------------------------|
 HU1906| PID    Reference Object                     Distance      Geod. Az  |
 HU1906|                                                           dddmmss.s |
 HU1906| HU1890 DEAL ISLAND CHURCH SPIRE            APPROX. 2.3 KM 0252815.8 |
 HU1906| HU1900 HU1900                              APPROX. 1.8 KM 0515405.5 |
 HU1906| HU1888 THOMAS                              APPROX. 2.5 KM 1550641.1 |
 HU1906|---------------------------------------------------------------------|
 HU1906
 HU1906                          SUPERSEDED SURVEY CONTROL
 HU1906
 HU1906  NAD 83(1991)-  38 08 10.77842(N)    075 57 35.44479(W) AD(       ) 3
 HU1906  NAD 83(1986)-  38 08 10.77874(N)    075 57 35.46408(W) AD(       ) 3
 HU1906  NAD 27      -  38 08 10.34800(N)    075 57 36.68600(W) AD(       ) 3
 HU1906  USSD        -  38 08 10.71900(N)    075 57 36.43400(W) AD(       ) 3
 HU1906
 HU1906.Superseded values are not recommended for survey control.
 HU1906
 HU1906.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1906.See file dsdata.pdf to determine how the superseded data were derived.
 HU1906
 HU1906_MARKER: N = NAIL
 HU1906_SETTING: 0 = UNSPECIFIED SETTING
 HU1906_MARK LOGO: CGS
 HU1906_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1906
 HU1906  HISTORY     - Date     Condition        Report By
 HU1906  HISTORY     - 1901     MONUMENTED       CGS
 HU1906  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1906
 HU1906                          STATION DESCRIPTION
 HU1906
 HU1906'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (WIV)
 HU1906'STATION IS ON EASTERN SIDE OF TANGIER SOUND, ON EXTREME WESTERN
 HU1906'POINT OF DEAL ISLAND, ABOUT 1-1/2 MILES S OF DEAL ISLAND STEAMBOAT
 HU1906'WHARF AND ABOUT 1/2 MILE SW OF A LARGE TWO-STORY WHITE HOUSE WITH
 HU1906'TWO RED-BRICK CHIMNEYS.  IT IS MARKED BY NAIL IN PINE STUB INSIDE
 HU1906'4-INCH TILE PIPE 2 FEET LONG, SET IN CEMENT, FLANGE END DOWN.
 HU1906
 HU1906                          STATION RECOVERY (1942)
 HU1906
 HU1906'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1906'THIS STATION WAS THOROUGHLY SEARCHED FOR BUT NOT RECOVERED.  JOHN
 HU1906'PARKINSON (LIFETIME RESIDENT) AND JAMES WHITE (RESIDENT FOR 40
 HU1906'YEARS) CLAIM THAT THE EXTREME WESTERN POINT OF DEAL ISLAND HAS
 HU1906'RECEDED CONSIDERABLY SINCE THE TIME THE STATION WAS ESTABLISHED.
 HU1906'
 HU1906'IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1890 ***********************************************************************
 HU1890  DESIGNATION -  DEAL ISLAND CHURCH SPIRE
 HU1890  PID         -  HU1890
 HU1890  STATE/COUNTY-  MD/SOMERSET
 HU1890  COUNTRY     -  US
 HU1890  USGS QUAD   -  DEAL ISLAND (2016)
 HU1890
 HU1890                         *CURRENT SURVEY CONTROL
 HU1890  ______________________________________________________________________
 HU1890* NAD 83(1993) POSITION- 38 09 18.65205(N) 075 56 54.49725(W)   ADJUSTED
 HU1890* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1890  ______________________________________________________________________
 HU1890  GEOID HEIGHT    -        -35.800 (meters)                     GEOID18
 HU1890  LAPLACE CORR    -         -2.25  (seconds)                    DEFLEC18
 HU1890  HORZ ORDER      -  THIRD
 HU1890
 HU1890.The horizontal coordinates were established by classical geodetic methods
 HU1890.and adjusted by the National Geodetic Survey in November 1994.
 HU1890
 HU1890.The orthometric height was scaled from a topographic map.
 HU1890
 HU1890.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1890.GEOID18 height accuracy estimate available here.
 HU1890
 HU1890.Click photographs - Photos may exist for this station.
 HU1890
 HU1890.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1890
 HU1890. The following values were computed from the NAD 83(1993) position.
 HU1890
 HU1890;                    North         East     Units Scale Factor Converg.
 HU1890;SPC MD       -    54,758.438   492,163.954   MT  1.00002835   +0 39 35.9
 HU1890;SPC MD       -   179,653.31  1,614,707.91   sFT  1.00002835   +0 39 35.9
 HU1890;UTM  18      - 4,223,457.858   416,901.615   MT  0.99968504   -0 35 09.6
 HU1890
 HU1890!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1890!SPC MD       -   1.00000566  x   1.00002835  =   1.00003401
 HU1890!UTM  18      -   1.00000566  x   0.99968504  =   0.99969070
 HU1890
 HU1890_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1690123457(NAD 83)
 HU1890
 HU1890                          SUPERSEDED SURVEY CONTROL
 HU1890
 HU1890  NAD 83(1991)-  38 09 18.65137(N)    075 56 54.49735(W) AD(       ) 3
 HU1890  NAD 83(1986)-  38 09 18.65149(N)    075 56 54.51691(W) AD(       ) 3
 HU1890  NAD 27      -  38 09 18.21500(N)    075 56 55.74900(W) AD(       ) 3
 HU1890  USSD        -  38 09 18.59500(N)    075 56 55.48900(W) AD(       ) 3
 HU1890
 HU1890.Superseded values are not recommended for survey control.
 HU1890
 HU1890.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1890.See file dsdata.pdf to determine how the superseded data were derived.
 HU1890
 HU1890_MARKER: 90 = CHURCH SPIRE
 HU1890
 HU1890  HISTORY     - Date     Condition        Report By
 HU1890  HISTORY     - 1901     FIRST OBSERVED   CGS
 HU1890  HISTORY     - 1907     GOOD             CGS
 HU1890  HISTORY     - 1942     GOOD             CGS
 HU1890  HISTORY     - 1950     GOOD             CGS
 HU1890
 HU1890                          STATION DESCRIPTION
 HU1890
 HU1890'DESCRIBED BY COAST AND GEODETIC SURVEY 1907
 HU1890'STATION IS ON DEAL ISLAND, ON MAIN ROAD ABOUT 1/4 MILE FROM
 HU1890'SHORE AND ABOUT 3/4 MILE S OF LAWS THOROUGHFARE.  IT IS CENTER OF
 HU1890'STEEPLE OF DEAL ISLAND METHODIST CHURCH SPIRE, A SQUARE PYRAMIDAL
 HU1890'SPIRE, OPEN BELOW, AND DARK COLORED WITH METAL ORNAMENT ON TOP.
 HU1890
 HU1890                          STATION RECOVERY (1942)
 HU1890
 HU1890'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1890'THIS STATION IS LOCATED ON DEAL ISLAND, ABOUT 20 METERS E OF
 HU1890'STATE HIGHWAY 363, ABOUT 1/4 MILE E FROM THE SHORE, AND ABOUT
 HU1890'3/4 MILE S OF LAWS THOROUGHFARE.
 HU1890'
 HU1890'THE STATION IS THE CENTER OF THE STEEPLE (A SQUARE PYRAMIDAL
 HU1890'SPIRE, OPEN BELOW, AND PAINTED WHITE WITH A METAL ORNAMENT ON TOP)
 HU1890'OF THE ST. JOHNS METHODIST EPISCOPAL CHURCH, ALSO KNOWN LOCALLY AS
 HU1890'THE DEAL ISLAND METHODIST CHURCH.  IT IS IN GOOD CONDITION.
 HU1890
 HU1890                          STATION RECOVERY (1950)
 HU1890
 HU1890'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HU1890'STATION WAS RECOVERED IN GOOD CONDITION.  THE 1942 DESCRIPTION IS
 HU1890'ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4333 ***********************************************************************
 DS4333  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4333  DESIGNATION -  DEALE
 DS4333  PID         -  DS4333
 DS4333  STATE/COUNTY-  MD/ANNE ARUNDEL
 DS4333  COUNTRY     -  US
 DS4333  USGS QUAD   -  DEALE (2016)
 DS4333
 DS4333                         *CURRENT SURVEY CONTROL
 DS4333  ______________________________________________________________________
 DS4333* NAD 83(2011) POSITION- 38 46 59.18548(N) 076 33 09.95085(W)   ADJUSTED
 DS4333* NAD 83(2011) ELLIP HT-   -30.840 (meters)        (01/30/26)   ADJUSTED
 DS4333* NAD 83(2011) EPOCH   -  2010.00
 DS4333* NAVD 88 ORTHO HEIGHT -     2.68  (meters)        8.8   (feet) GPS OBS
 DS4333  ______________________________________________________________________
 DS4333  GEOID HEIGHT    -        -33.509 (meters)                     GEOID18
 DS4333  NAD 83(2011) X  -  1,157,730.733 (meters)                     COMP
 DS4333  NAD 83(2011) Y  - -4,841,934.694 (meters)                     COMP
 DS4333  NAD 83(2011) Z  -  3,973,556.931 (meters)                     COMP
 DS4333  LAPLACE CORR    -         -3.80  (seconds)                    DEFLEC18
 DS4333
 DS4333  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4333  Standards:
 DS4333         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4333            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4333  -------------------------------------------------------------------
 DS4333  NETWORK    0.70   1.92           0.31   0.26   0.98     -0.15243927
 DS4333  -------------------------------------------------------------------
 DS4333  Click here for local accuracies and other accuracy information.
 DS4333
 DS4333.The horizontal coordinates were established by GPS observations
 DS4333.and adjusted by the MD DOT HIGHWAY ADMIN in January 2026.
 DS4333
 DS4333.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4333.frame has been affixed to the stable North American tectonic plate 
 DS4333
 DS4333.The horizontal coordinates are valid at the epoch date displayed above
 DS4333.which is a decimal equivalence of Year/Month/Day.
 DS4333
 DS4333.The orthometric height was determined by GPS observations and a
 DS4333.high-resolution geoid model using precise GPS observation and
 DS4333.processing techniques.
 DS4333
 DS4333.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4333.GEOID18 height accuracy estimate available here.
 DS4333
 DS4333.Click photographs - Photos may exist for this station.
 DS4333
 DS4333.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4333
 DS4333.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4333
 DS4333.The ellipsoidal height was determined by GPS observations
 DS4333.and is referenced to NAD 83.
 DS4333
 DS4333. The following values were computed from the NAD 83(2011) position.
 DS4333
 DS4333;                    North         East     Units Scale Factor Converg.
 DS4333;SPC MD       -   124,024.564   438,858.384   MT  0.99995115   +0 16 50.5
 DS4333;SPC MD       -   406,903.92  1,439,821.21   sFT  0.99995115   +0 16 50.5
 DS4333;UTM  18      - 4,293,853.072   365,130.309   MT  0.99982399   -0 58 21.9
 DS4333
 DS4333!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4333!SPC MD       -   1.00000484  x   0.99995115  =   0.99995599
 DS4333!UTM  18      -   1.00000484  x   0.99982399  =   0.99982883
 DS4333
 DS4333_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6513093853(NAD 83)
 DS4333
 DS4333                          SUPERSEDED SURVEY CONTROL
 DS4333
 DS4333.No superseded survey control is available for this station.
 DS4333
 DS4333_MARKER: DD = SURVEY DISK
 DS4333_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS4333_STAMPING: DEALE 1995
 DS4333_MARK LOGO: MD-003
 DS4333_PROJECTION: FLUSH
 DS4333_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS4333+STABILITY: SURFACE MOTION
 DS4333_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4333+SATELLITE: SATELLITE OBSERVATIONS - March 06, 2025
 DS4333
 DS4333  HISTORY     - Date     Condition        Report By
 DS4333  HISTORY     - 20250306 MONUMENTED       MD-003
 DS4333  HISTORY     - 20250306 GOOD             MDSHA
 DS4333
 DS4333                          STATION DESCRIPTION
 DS4333
 DS4333'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4333'THE MARK IS LOCATED ABOUT 6.3 MI (10.1 KM) EAST OF BRISTOL, 5.4 MI
 DS4333'(8.7 KM) NORTH-NORTHWEST OF NORTH BEACH AND IN THE TOWN OF DEALE, MD.
 DS4333'
 DS4333'TO REACH THE MARK FROM THE INTERSECTION OF MD 2 (SOLOMONS ISLAND
 DS4333'ROAD)AND MD 258 (BAY FRONT ROAD) PROCEED EAST ON BAY FRONT ROAD FOR
 DS4333'3.85 KM (2.39 MI) TO THE INTERSECTION WITH SWAMP CIRCLE ROAD.  TURN
 DS4333'RIGHT ONTO SWAMP CIRCLE ROAD AND PROCEED FOR 0.67 KM (0.42 MI) TO THE
 DS4333'INTERSECTION WITH DEALE CHURCHTON ROAD.  TURN RIGHT ONTO DEALE
 DS4333'CHURCHTON ROAD PROCEED FOR 0.81 KM (0.50 MI) TO THE MARK ON THE RIGHT.
 DS4333'THE MARK IS 41.0 FT (12.5 M) NORTH-NORTHEAST OF THE CENTERLINE OF
 DS4333'CABANA ROAD, 28.8 FT (8.8 M) WEST-NORTHWEST OF THE CENTERLINE OF DEALE
 DS4333'CHURCHTON ROAD, 28.7 FT (8.7 M) SOUTH-SOUTHWEST OF THE CENTERLINE OF A
 DS4333'PAVED DRIVEWAY TO THE ANNE ARUNDEL COUNTY LIBRARY, 26.2 FT (8.0 M)
 DS4333'NORTHEAST OF A UTILITY POLE NUMBERED BGE 306800, 21.3 FT (6.5 M)
 DS4333'NORTH-NORTHWEST OF A SEWER MANHOLE SET IN THE TOP OF A 12-IN (30 CM)
 DS4333'ROUND CONCRETE POST AND ABOUT 0.5 FT (15 CM) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7208 ***********************************************************************
 JV7208  DESIGNATION -  DEBBIE
 JV7208  PID         -  JV7208
 JV7208  STATE/COUNTY-  MD/MONTGOMERY
 JV7208  COUNTRY     -  US
 JV7208  USGS QUAD   -  POOLESVILLE (2016)
 JV7208
 JV7208                         *CURRENT SURVEY CONTROL
 JV7208  ______________________________________________________________________
 JV7208* NAD 83(2011) POSITION- 39 13 28.81477(N) 077 26 13.75288(W)   ADJUSTED
 JV7208* NAD 83(2011) ELLIP HT-    69.216 (meters)        (06/27/12)   ADJUSTED
 JV7208* NAD 83(2011) EPOCH   -  2010.00
 JV7208* NAVD 88 ORTHO HEIGHT -   101.6   (meters)      333.    (feet) GPS OBS
 JV7208  ______________________________________________________________________
 JV7208  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7208  GEOID HEIGHT    -        -32.690 (meters)                     GEOID93
 JV7208  GEOID HEIGHT    -        -32.352 (meters)                     GEOID18
 JV7208  NAD 83(2011) X  -  1,076,164.312 (meters)                     COMP
 JV7208  NAD 83(2011) Y  - -4,829,189.738 (meters)                     COMP
 JV7208  NAD 83(2011) Z  -  4,011,713.864 (meters)                     COMP
 JV7208  LAPLACE CORR    -          6.66  (seconds)                    DEFLEC18
 JV7208
 JV7208  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7208  Standards:
 JV7208         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7208            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7208  -------------------------------------------------------------------
 JV7208  NETWORK    1.89   2.08           0.85   0.68   1.06      0.05301756
 JV7208  -------------------------------------------------------------------
 JV7208  Click here for local accuracies and other accuracy information.
 JV7208
 JV7208.The horizontal coordinates were established by GPS observations
 JV7208.and adjusted by the National Geodetic Survey in June 2012.
 JV7208
 JV7208.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7208.been affixed to the stable North American tectonic plate. See 
 JV7208.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7208
 JV7208.The horizontal coordinates are valid at the epoch date displayed above
 JV7208.which is a decimal equivalence of Year/Month/Day.
 JV7208
 JV7208.The orthometric height was determined by GPS observations and a
 JV7208.high-resolution geoid model.
 JV7208
 JV7208.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7208.GEOID18 height accuracy estimate available here.
 JV7208
 JV7208.Click photographs - Photos may exist for this station.
 JV7208
 JV7208.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7208
 JV7208.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7208
 JV7208.The ellipsoidal height was determined by GPS observations
 JV7208.and is referenced to NAD 83.
 JV7208
 JV7208. The following values were computed from the NAD 83(2011) position.
 JV7208
 JV7208;                    North         East     Units Scale Factor Converg.
 JV7208;SPC MD       -   173,037.982   362,252.349   MT  0.99996834   -0 16 27.7
 JV7208;SPC MD       -   567,708.78  1,188,489.58   sFT  0.99996834   -0 16 27.7
 JV7208;SPC VA N     - 2,173,474.577 3,591,777.042   MT  1.00000447   +0 39 48.0
 JV7208;SPC VA N     - 7,130,807.84 11,784,021.85   sFT  1.00000447   +0 39 48.0
 JV7208;UTM  18      - 4,344,539.428   289,618.786   MT  1.00014500   -1 32 30.2
 JV7208
 JV7208!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7208!SPC MD       -   0.99998914  x   0.99996834  =   0.99995748
 JV7208!SPC VA N     -   0.99998914  x   1.00000447  =   0.99999361
 JV7208!UTM  18      -   0.99998914  x   1.00014500  =   1.00013414
 JV7208
 JV7208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8961844539(NAD 83)
 JV7208
 JV7208                          SUPERSEDED SURVEY CONTROL
 JV7208
 JV7208  NAD 83(2007)-  39 13 28.81502(N)    077 26 13.75354(W) AD(2002.00) 0
 JV7208  ELLIP H (02/10/07)   69.240  (m)                       GP(2002.00)    
 JV7208  ELLIP H (08/30/02)   69.240  (m)                       GP(       ) 4 2
 JV7208  NAD 83(1991)-  39 13 28.81526(N)    077 26 13.75287(W) AD(       ) 1
 JV7208  ELLIP H (02/09/94)   69.176  (m)                       GP(       ) 4 1
 JV7208
 JV7208.Superseded values are not recommended for survey control.
 JV7208
 JV7208.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7208.See file dsdata.pdf to determine how the superseded data were derived.
 JV7208
 JV7208_MARKER: DD = SURVEY DISK
 JV7208_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7208_STAMPING: DEBBIE 1993
 JV7208_MARK LOGO: MD-021
 JV7208_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7208_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7208+STABILITY: SURFACE MOTION
 JV7208_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7208+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2009
 JV7208
 JV7208  HISTORY     - Date     Condition        Report By
 JV7208  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7208  HISTORY     - 20030808 GOOD             GEOCAC
 JV7208  HISTORY     - 20090605 GOOD             GEOCAC
 JV7208
 JV7208                          STATION DESCRIPTION
 JV7208
 JV7208'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7208'PROCEED NORTHWEST FROM THE MD RTE 28 RAILROAD CROSSING IN DICKERSON,
 JV7208'MD 0.3 MILES (0.5 KM) TO THE INTERSECTION OF RTE 28 (DICKERSON ROAD)
 JV7208'AND MOUTH OF MONOCACY ROAD. TURN LEFT AND PROCEED WEST ON MOUTH OF
 JV7208'MONOCACY ROAD 0.6 MILES (1.0 KM) TO STATION ON LEFT. STATION IS 0.17
 JV7208'MILES (0.27 KM) EAST OF RAILROAD TRACKS, 14 FEET (4.3 M) SOUTH OF
 JV7208'CENTERLINE OF MOUTH OF MONOCACY ROAD, 30 FEET (9.1 M) NORTHEASTERLY
 JV7208'OF A GAS PIPELINE WARNING SIGN AND 77 FEET (23.5 M) SOUTHWEST OF A
 JV7208'POWER POLE MARKED CP M-14. STATION IS BRASS DISK SET IN 8 INCH
 JV7208'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7208
 JV7208                          STATION RECOVERY (2003)
 JV7208
 JV7208'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV7208'RECOVERED IN GOOD CONDITION.
 JV7208
 JV7208                          STATION RECOVERY (2009)
 JV7208
 JV7208'RECOVERY NOTE BY GEOCACHING 2009 (MFM)
 JV7208'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5808 ***********************************************************************
 HV5808  DESIGNATION -  DECK
 HV5808  PID         -  HV5808
 HV5808  STATE/COUNTY-  MD/TALBOT
 HV5808  COUNTRY     -  US
 HV5808  USGS QUAD   -  QUEENSTOWN (2016)
 HV5808
 HV5808                         *CURRENT SURVEY CONTROL
 HV5808  ______________________________________________________________________
 HV5808* NAD 83(1991) POSITION- 38 52 53.86161(N) 076 08 57.52089(W)   ADJUSTED
 HV5808* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5808  ______________________________________________________________________
 HV5808  GEOID HEIGHT    -        -34.257 (meters)                     GEOID18
 HV5808  LAPLACE CORR    -         -4.22  (seconds)                    DEFLEC18
 HV5808  HORZ ORDER      -  THIRD
 HV5808
 HV5808.The horizontal coordinates were established by classical geodetic methods
 HV5808.and adjusted by the National Geodetic Survey in January 1992.
 HV5808
 HV5808.The orthometric height was scaled from a topographic map.
 HV5808
 HV5808.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5808.GEOID18 height accuracy estimate available here.
 HV5808
 HV5808.Click photographs - Photos may exist for this station.
 HV5808
 HV5808.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5808
 HV5808. The following values were computed from the NAD 83(1991) position.
 HV5808
 HV5808;                    North         East     Units Scale Factor Converg.
 HV5808;SPC MD       -   135,209.799   473,809.957   MT  0.99994985   +0 32 02.1
 HV5808;SPC MD       -   443,600.82  1,554,491.50   sFT  0.99994985   +0 32 02.1
 HV5808;UTM  18      - 4,304,268.529   400,312.071   MT  0.99972237   -0 43 17.4
 HV5808
 HV5808!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5808!SPC MD       -   1.00000525  x   0.99994985  =   0.99995510
 HV5808!UTM  18      -   1.00000525  x   0.99972237  =   0.99972762
 HV5808
 HV5808:                Primary Azimuth Mark                     Grid Az
 HV5808:SPC MD       -  PHILIP                                   057 59 45.7
 HV5808:UTM  18      -  PHILIP                                   059 15 05.2
 HV5808
 HV5808_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0031204268(NAD 83)
 HV5808
 HV5808|---------------------------------------------------------------------|
 HV5808| PID    Reference Object                     Distance      Geod. Az  |
 HV5808|                                                           dddmmss.s |
 HV5808| HV5773 PHILIP                              497.899 METERS 0583147.8 |
 HV5808| HV5787 MATTER                              149.733 METERS 10155     |
 HV5808| HV5758 QUARTER                             360.933 METERS 21814     |
 HV5808| HV5810 DIVIDE                              362.340 METERS 29528     |
 HV5808| HV5772 PRINCESS                            340.091 METERS 34218     |
 HV5808|---------------------------------------------------------------------|
 HV5808
 HV5808                          SUPERSEDED SURVEY CONTROL
 HV5808
 HV5808  NAD 83(1986)-  38 52 53.85701(N)    076 08 57.53391(W) AD(       ) 3
 HV5808  NAD 27      -  38 52 53.41500(N)    076 08 58.71700(W) AD(       ) 3
 HV5808  USSD        -  38 52 53.81000(N)    076 08 58.48700(W) AD(       ) 3
 HV5808
 HV5808.Superseded values are not recommended for survey control.
 HV5808
 HV5808.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5808.See file dsdata.pdf to determine how the superseded data were derived.
 HV5808
 HV5808_MARKER: H = DRILL HOLE
 HV5808_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5808_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5808
 HV5808  HISTORY     - Date     Condition        Report By
 HV5808  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5808  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5808
 HV5808                          STATION DESCRIPTION
 HV5808
 HV5808'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5808'STATION IS ON THE SOUTHERN SHORE OF THE BRANCH OF WYE RIVER
 HV5808'BOUNDING WYE ISLAND ON THE S, ON A POINT ABOUT 1/2 MILE SE OF
 HV5808'ENTRANCE TO DIVIDING CREEK, AT EDGE OF WATER BUSHES, ON A GRASS
 HV5808'POINT, ABOUT 1 FOOT ABOVE HIGH WATER, 4 YARDS S OF SHORE, 10 YARDS
 HV5808'W OF A ROUND POINT, 20 YARDS E OF SHORE, AND 30 YARDS N OF SHORE.
 HV5808'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5808'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5808'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5808'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 HV5808'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 HV5808'INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV5808'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY OF HOUSE 1-1/4
 HV5808'MILES, S 81 DEG 25 MIN W.  TANGENT OF POINT OF LAND, 1/4 MILE, N
 HV5808'67 DEG 14 MIN W.  LEFT TANGENT OF OLD WHARF, 400 YARDS, N 8 DEG 0
 HV5808'MIN E. S PEAK OF LARGE BARN, 3/4 MILE, N 28 DEG 55 MIN E.
 HV5808'TANGENT OF POINT OF LAND, 500 YARDS, N 65 DEG 3 MIN E.  LEFT CEDAR
 HV5808'TREE ON POINT, 200 YARDS, S 78 DEG 5 MIN E.
 HV5808
 HV5808                          STATION RECOVERY (1940)
 HV5808
 HV5808'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5808'STATION MARK SEARCHED FOR BUT NOT FOUND.  REFERENCES COULD NOT BE
 HV5808'CHECKED.  POINT IS NOW COVERED OVER WITH THICK LAYER OF MARSH
 HV5808'GRASS AND BRUSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6267 ***********************************************************************
 JV6267  DESIGNATION -  DEEN
 JV6267  PID         -  JV6267
 JV6267  STATE/COUNTY-  MD/HARFORD
 JV6267  COUNTRY     -  US
 JV6267  USGS QUAD   -  ABERDEEN (2016)
 JV6267
 JV6267                         *CURRENT SURVEY CONTROL
 JV6267  ______________________________________________________________________
 JV6267* NAD 83(2011) POSITION- 39 31 28.00834(N) 076 08 18.63322(W)   ADJUSTED
 JV6267* NAD 83(2011) ELLIP HT-   -11.389 (meters)        (06/27/12)   ADJUSTED
 JV6267* NAD 83(2011) EPOCH   -  2010.00
 JV6267* NAVD 88 ORTHO HEIGHT -    21.752 (meters)       71.36  (feet) ADJUSTED
 JV6267  ______________________________________________________________________
 JV6267  GEOID HEIGHT    -        -33.120 (meters)                     GEOID18
 JV6267  NAD 83(2011) X  -  1,180,261.847 (meters)                     COMP
 JV6267  NAD 83(2011) Y  - -4,783,000.181 (meters)                     COMP
 JV6267  NAD 83(2011) Z  -  4,037,390.253 (meters)                     COMP
 JV6267  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 JV6267  DYNAMIC HEIGHT  -         21.741 (meters)       71.33  (feet) COMP
 JV6267  MODELED GRAVITY -    980,127.2   (mgal)                       NAVD 88
 JV6267
 JV6267  VERT ORDER      -  FIRST     CLASS II
 JV6267
 JV6267  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6267  Standards:
 JV6267         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6267            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6267  -------------------------------------------------------------------
 JV6267  NETWORK    0.82   1.37           0.36   0.31   0.70     -0.08084571
 JV6267  -------------------------------------------------------------------
 JV6267  Click here for local accuracies and other accuracy information.
 JV6267
 JV6267.The horizontal coordinates were established by GPS observations
 JV6267.and adjusted by the National Geodetic Survey in June 2012.
 JV6267
 JV6267.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6267.been affixed to the stable North American tectonic plate. See 
 JV6267.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6267
 JV6267.The horizontal coordinates are valid at the epoch date displayed above
 JV6267.which is a decimal equivalence of Year/Month/Day.
 JV6267
 JV6267.The orthometric height was determined by differential leveling and
 JV6267.adjusted by the NATIONAL GEODETIC SURVEY
 JV6267.in June 1991.
 JV6267
 JV6267.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6267.GEOID18 height accuracy estimate available here.
 JV6267
 JV6267.Click photographs - Photos may exist for this station.
 JV6267
 JV6267.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6267
 JV6267.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6267
 JV6267.The ellipsoidal height was determined by GPS observations
 JV6267.and is referenced to NAD 83.
 JV6267
 JV6267.The dynamic height is computed by dividing the NAVD 88
 JV6267.geopotential number by the normal gravity value computed on the
 JV6267.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6267.degrees latitude (g = 980.6199 gals.).
 JV6267
 JV6267.The modeled gravity was interpolated from observed gravity values.
 JV6267
 JV6267. The following values were computed from the NAD 83(2011) position.
 JV6267
 JV6267;                    North         East     Units Scale Factor Converg.
 JV6267;SPC MD       -   206,578.670   474,073.729   MT  1.00001387   +0 32 26.5
 JV6267;SPC MD       -   677,750.19  1,555,356.89   sFT  1.00001387   +0 32 26.5
 JV6267;UTM  18      - 4,375,596.406   402,145.162   MT  0.99971789   -0 43 28.6
 JV6267
 JV6267!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6267!SPC MD       -   1.00000179  x   1.00001387  =   1.00001566
 JV6267!UTM  18      -   1.00000179  x   0.99971789  =   0.99971968
 JV6267
 JV6267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0214575596(NAD 83)
 JV6267
 JV6267                          SUPERSEDED SURVEY CONTROL
 JV6267
 JV6267  NAD 83(2007)-  39 31 28.00831(N)    076 08 18.63415(W) AD(2002.00) 0
 JV6267  ELLIP H (02/10/07)  -11.375  (m)                       GP(2002.00)    
 JV6267  ELLIP H (09/18/02)  -11.349  (m)                       GP(       ) 4 2
 JV6267  NAD 83(1991)-  39 31 28.00784(N)    076 08 18.63505(W) AD(       ) 1
 JV6267  ELLIP H (01/27/92)  -11.365  (m)                       GP(       ) 4 1
 JV6267  NAD 83(1986)-  39 31 28.00185(N)    076 08 18.64067(W) AD(       ) 1
 JV6267  NGVD 29              21.99   (m)           72.1    (f) LEVELING    3  
 JV6267
 JV6267.Superseded values are not recommended for survey control.
 JV6267
 JV6267.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6267.See file dsdata.pdf to determine how the superseded data were derived.
 JV6267
 JV6267_MARKER: DD = SURVEY DISK
 JV6267_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6267_STAMPING: 12 DEEN 1989
 JV6267_MARK LOGO: MD-025
 JV6267_PROJECTION: FLUSH
 JV6267_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6267_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6267+STABILITY: SURFACE MOTION
 JV6267_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6267+SATELLITE: SATELLITE OBSERVATIONS - December 11, 2023
 JV6267
 JV6267  HISTORY     - Date     Condition        Report By
 JV6267  HISTORY     - 1989     MONUMENTED       RDA
 JV6267  HISTORY     - 20020511 GOOD             USPSQD
 JV6267  HISTORY     - 20150919 GOOD             USPSQD
 JV6267  HISTORY     - 20231211 GOOD             MDSHA
 JV6267
 JV6267                          STATION DESCRIPTION
 JV6267
 JV6267'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6267'THE STATION IS LOCATED IN SOUTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6267'0.9 MILE EAST OF THE TOWN OF ABERDEEN ON U.S. HIGHWAY 40.  TO REACH
 JV6267'THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE
 JV6267'HIGHWAY 22 PROCEED NORTHEAST ON HIGHWAY 40 ABOUT 1.3 MILES TO THE
 JV6267'STATION ON THE LEFT IN THE HIGHWAY MEDIAN.  THE STATION IS A STANDARD
 JV6267'HARFORD COUNTY STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND
 JV6267'STAMPED 12 DEEN 1989.  THE STATION IS LOCATED ABOUT 25 YARDS
 JV6267'SOUTHWEST OF THE INTERSECTION OF HIGHWAY 40 AND A ROAD POSTED
 JV6267'CONSTITUTION HIGHWAY.  THE STATION IS 105.7 FEET SOUTHWEST FROM G AND
 JV6267'E POLE NUMBER 152101, 86.0 FEET SOUTHEAST FROM G AND E POLE NUMBER
 JV6267'157828, AND 3.8 FEET NORTH FROM THE EDGE OF PAVEMENT NORTH OF THE
 JV6267'EAST BOUND LANES OF HIGHWAY 40.
 JV6267
 JV6267                          STATION RECOVERY (2002)
 JV6267
 JV6267'RECOVERY NOTE BY US POWER SQUADRON 2002 (KC)
 JV6267'STATION IS 50 FT SOUTHWEST OF INTERSECTION OF RT. 40 AND OAKINGTON
 JV6267'ROAD, 14 FT NORTH OF THE EASTBOUND LANES, 25 1/2 FT SOUTH OF THE
 JV6267'WESTBOUND LANES. NO TELEPHONE POLES, STATION IS IN THE MEDIAN STRIP.
 JV6267
 JV6267                          STATION RECOVERY (2015)
 JV6267
 JV6267'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV6267'RECOVERED AS DESCRIBED.
 JV6267
 JV6267                          STATION RECOVERY (2023)
 JV6267
 JV6267'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV6267'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6304 ***********************************************************************
 JV6304  DESIGNATION -  DEEN AZ MK
 JV6304  PID         -  JV6304
 JV6304  STATE/COUNTY-  MD/HARFORD
 JV6304  COUNTRY     -  US
 JV6304  USGS QUAD   -  ABERDEEN (2016)
 JV6304
 JV6304                         *CURRENT SURVEY CONTROL
 JV6304  ______________________________________________________________________
 JV6304* NAD 83(2011) POSITION- 39 31 39.68562(N) 076 07 53.34618(W)   ADJUSTED
 JV6304* NAD 83(2011) ELLIP HT-   -14.210 (meters)        (06/27/12)   ADJUSTED
 JV6304* NAD 83(2011) EPOCH   -  2010.00
 JV6304* NAVD 88 ORTHO HEIGHT -    18.938 (meters)       62.13  (feet) ADJUSTED
 JV6304  ______________________________________________________________________
 JV6304  GEOID HEIGHT    -        -33.124 (meters)                     GEOID18
 JV6304  NAD 83(2011) X  -  1,180,792.751 (meters)                     COMP
 JV6304  NAD 83(2011) Y  - -4,782,630.821 (meters)                     COMP
 JV6304  NAD 83(2011) Z  -  4,037,666.240 (meters)                     COMP
 JV6304  LAPLACE CORR    -         -3.60  (seconds)                    DEFLEC18
 JV6304  DYNAMIC HEIGHT  -         18.928 (meters)       62.10  (feet) COMP
 JV6304  MODELED GRAVITY -    980,127.4   (mgal)                       NAVD 88
 JV6304
 JV6304  VERT ORDER      -  FIRST     CLASS II
 JV6304
 JV6304  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6304  Standards:
 JV6304         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6304            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6304  -------------------------------------------------------------------
 JV6304  NETWORK    1.85   5.49           0.78   0.68   2.80      0.44472925
 JV6304  -------------------------------------------------------------------
 JV6304  Click here for local accuracies and other accuracy information.
 JV6304
 JV6304.The horizontal coordinates were established by GPS observations
 JV6304.and adjusted by the National Geodetic Survey in June 2012.
 JV6304
 JV6304.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6304.been affixed to the stable North American tectonic plate. See 
 JV6304.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6304
 JV6304.The horizontal coordinates are valid at the epoch date displayed above
 JV6304.which is a decimal equivalence of Year/Month/Day.
 JV6304
 JV6304.The orthometric height was determined by differential leveling and
 JV6304.adjusted by the NATIONAL GEODETIC SURVEY
 JV6304.in June 1991.
 JV6304
 JV6304.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6304.GEOID18 height accuracy estimate available here.
 JV6304
 JV6304.Click photographs - Photos may exist for this station.
 JV6304
 JV6304.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6304
 JV6304.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6304
 JV6304.The ellipsoidal height was determined by GPS observations
 JV6304.and is referenced to NAD 83.
 JV6304
 JV6304.The dynamic height is computed by dividing the NAVD 88
 JV6304.geopotential number by the normal gravity value computed on the
 JV6304.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6304.degrees latitude (g = 980.6199 gals.).
 JV6304
 JV6304.The modeled gravity was interpolated from observed gravity values.
 JV6304
 JV6304. The following values were computed from the NAD 83(2011) position.
 JV6304
 JV6304;                    North         East     Units Scale Factor Converg.
 JV6304;SPC MD       -   206,944.514   474,674.246   MT  1.00001451   +0 32 42.4
 JV6304;SPC MD       -   678,950.46  1,557,327.09   sFT  1.00001451   +0 32 42.4
 JV6304;UTM  18      - 4,375,948.795   402,753.430   MT  0.99971643   -0 43 12.7
 JV6304
 JV6304!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6304!SPC MD       -   1.00000223  x   1.00001451  =   1.00001674
 JV6304!UTM  18      -   1.00000223  x   0.99971643  =   0.99971866
 JV6304
 JV6304_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0275375948(NAD 83)
 JV6304
 JV6304                          SUPERSEDED SURVEY CONTROL
 JV6304
 JV6304  NAD 83(2007)-  39 31 39.68557(N)    076 07 53.34713(W) AD(2002.00) 0
 JV6304  ELLIP H (02/10/07)  -14.196  (m)                       GP(2002.00)    
 JV6304  ELLIP H (09/18/02)  -14.170  (m)                       GP(       ) 4 2
 JV6304  NAD 83(1991)-  39 31 39.68512(N)    076 07 53.34803(W) AD(       ) 1
 JV6304  ELLIP H (01/27/92)  -14.186  (m)                       GP(       ) 4 1
 JV6304  NAD 83(1986)-  39 31 39.67909(N)    076 07 53.35366(W) AD(       ) 1
 JV6304  NGVD 29              19.17   (m)           62.9    (f) LEVELING    3  
 JV6304
 JV6304.Superseded values are not recommended for survey control.
 JV6304
 JV6304.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6304.See file dsdata.pdf to determine how the superseded data were derived.
 JV6304
 JV6304_MARKER: DZ = AZIMUTH MARK DISK
 JV6304_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6304_STAMPING: 12 DEEN 1989
 JV6304_MARK LOGO: MD-025
 JV6304_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6304_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6304+STABILITY: SURFACE MOTION
 JV6304_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6304+SATELLITE: SATELLITE OBSERVATIONS - January 09, 2004
 JV6304
 JV6304  HISTORY     - Date     Condition        Report By
 JV6304  HISTORY     - 1989     MONUMENTED       RDA
 JV6304  HISTORY     - 20020511 GOOD             USPSQD
 JV6304  HISTORY     - 20040109 GOOD             DEWDAV
 JV6304
 JV6304                          STATION DESCRIPTION
 JV6304
 JV6304'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6304'THE STATION IS LOCATED IN SOUTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6304'0.9 MILE EAST OF THE TOWN OF ABERDEEN ON U.S. HIGHWAY 40.  TO REACH
 JV6304'THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE
 JV6304'HIGHWAY 22 PROCEED NORTHEAST ON HIGHWAY 40 ABOUT 1.3 MILES TO THE
 JV6304'STATION ON THE LEFT IN THE HIGHWAY MEDIAN.  TO REACH THE AZIMUTH MARK
 JV6304'FROM THE STATION PROCEED NORTHEAST ALONG HIGHWAY 40 ABOUT 0.35 MILE
 JV6304'TO THE SOUTHWEST END OF AMES SHOPPING CENTER AND THE MARK ON THE LEFT
 JV6304'IN THE HIGHWAY MEDIAN.  THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH
 JV6304'DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 12 DEEN 1989.
 JV6304'THE MARK IS 111.0 FEET SOUTHWEST FROM BG AND E POLE NUMBER 132117,
 JV6304'94.0 FEET SOUTHEAST FROM BG AND E POLE NUMBER 132116, 11.8 FEET SOUTH
 JV6304'FROM THE EDGE OF PAVEMENT SOUTH OF THE WEST BOUND LANES OF HIGHWAY
 JV6304'40.
 JV6304
 JV6304                          STATION RECOVERY (2002)
 JV6304
 JV6304'RECOVERY NOTE BY US POWER SQUADRON 2002 (KC)
 JV6304'SOUTHWEST FROM POLE 17 AND SOUTHEAST FROM POLE 16.
 JV6304
 JV6304                          STATION RECOVERY (2004)
 JV6304
 JV6304'RECOVERY NOTE BY DEWBERRY DAVIS 2004 (KEC)
 JV6304'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6050 ***********************************************************************
 HV6050  DESIGNATION -  DEEP
 HV6050  PID         -  HV6050
 HV6050  STATE/COUNTY-  MD/TALBOT
 HV6050  COUNTRY     -  US
 HV6050  USGS QUAD   -  OXFORD (2016)
 HV6050
 HV6050                         *CURRENT SURVEY CONTROL
 HV6050  ______________________________________________________________________
 HV6050* NAD 83(1991) POSITION- 38 44 05.86335(N) 076 14 20.36645(W)   ADJUSTED
 HV6050* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6050  ______________________________________________________________________
 HV6050  GEOID HEIGHT    -        -34.396 (meters)                     GEOID18
 HV6050  LAPLACE CORR    -         -4.91  (seconds)                    DEFLEC18
 HV6050  HORZ ORDER      -  THIRD
 HV6050
 HV6050.The horizontal coordinates were established by classical geodetic methods
 HV6050.and adjusted by the National Geodetic Survey in January 1992.
 HV6050
 HV6050.The orthometric height was scaled from a topographic map.
 HV6050
 HV6050.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6050.GEOID18 height accuracy estimate available here.
 HV6050
 HV6050.Click photographs - Photos may exist for this station.
 HV6050
 HV6050.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6050
 HV6050. The following values were computed from the NAD 83(1991) position.
 HV6050
 HV6050;                    North         East     Units Scale Factor Converg.
 HV6050;SPC MD       -   118,860.797   466,164.847   MT  0.99995285   +0 28 39.5
 HV6050;SPC MD       -   389,962.46  1,529,409.17   sFT  0.99995285   +0 28 39.5
 HV6050;UTM  18      - 4,288,094.319   392,312.684   MT  0.99974280   -0 46 31.2
 HV6050
 HV6050!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6050!SPC MD       -   1.00000543  x   0.99995285  =   0.99995828
 HV6050!UTM  18      -   1.00000543  x   0.99974280  =   0.99974823
 HV6050
 HV6050:                Primary Azimuth Mark                     Grid Az
 HV6050:SPC MD       -  MULBERRY                                 343 01 03.6
 HV6050:UTM  18      -  MULBERRY                                 344 16 14.3
 HV6050
 HV6050_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9231288094(NAD 83)
 HV6050
 HV6050|---------------------------------------------------------------------|
 HV6050| PID    Reference Object                     Distance      Geod. Az  |
 HV6050|                                                           dddmmss.s |
 HV6050| HV5999 MULBERRY                            APPROX. 1.6 KM 3432943.1 |
 HV6050|---------------------------------------------------------------------|
 HV6050
 HV6050                          SUPERSEDED SURVEY CONTROL
 HV6050
 HV6050  NAD 83(1986)-  38 44 05.85976(N)    076 14 20.38131(W) AD(       ) 3
 HV6050  NAD 27      -  38 44 05.43300(N)    076 14 21.58000(W) AD(       ) 3
 HV6050  USSD        -  38 44 05.82300(N)    076 14 21.39500(W) AD(       ) 3
 HV6050
 HV6050.Superseded values are not recommended for survey control.
 HV6050
 HV6050.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6050.See file dsdata.pdf to determine how the superseded data were derived.
 HV6050
 HV6050_MARKER: N = NAIL
 HV6050_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6050_PROJECTION: PROJECTING 15 CENTIMETERS
 HV6050_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6050
 HV6050  HISTORY     - Date     Condition        Report By
 HV6050  HISTORY     - 1900     MONUMENTED       CGS
 HV6050  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6050
 HV6050                          STATION DESCRIPTION
 HV6050
 HV6050'DESCRIBED BY COAST AND GEODETIC SURVEY 1900 (FFW)
 HV6050'ON EASTERN SIDE OF BROAD CREEK ON DEEP NECK POINT, ON GRASSY FLAT
 HV6050'OUTSIDE OF BLUFF AND WOOD LINE, AND ABOUT 150 METERS S OF END OF
 HV6050'POINT, BEING THE FIRST GRASS PLOT S OF END OF POINT.  STATION
 HV6050'MARKED BY NAIL IN CEDAR STUB PROJECTING 6 INCHES ABOVE SURFACE OF
 HV6050'GROUND.  STAKE BLAZED WITH TRIANGLE.
 HV6050
 HV6050                          STATION RECOVERY (1940)
 HV6050
 HV6050'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6050'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  CEDAR STUB HAS
 HV6050'EVIDENTLY BEEN WASHED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5830 ***********************************************************************
 JV5830  DESIGNATION -  DEEP
 JV5830  PID         -  JV5830
 JV5830  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5830  COUNTRY     -  US
 JV5830  USGS QUAD   -  RELAY (2016)
 JV5830
 JV5830                         *CURRENT SURVEY CONTROL
 JV5830  ______________________________________________________________________
 JV5830* NAD 83(1991) POSITION- 39 12 30.55489(N) 076 42 02.44509(W)   ADJUSTED
 JV5830* NAVD 88 ORTHO HEIGHT -    49.    (meters)      161.    (feet) SCALED
 JV5830  ______________________________________________________________________
 JV5830  GEOID HEIGHT    -        -32.577 (meters)                     GEOID18
 JV5830  LAPLACE CORR    -         -5.93  (seconds)                    DEFLEC18
 JV5830  HORZ ORDER      -  THIRD
 JV5830
 JV5830.The horizontal coordinates were established by classical geodetic methods
 JV5830.and adjusted by the National Geodetic Survey in January 1992.
 JV5830
 JV5830.The orthometric height was scaled from a topographic map.
 JV5830
 JV5830.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5830.GEOID18 height accuracy estimate available here.
 JV5830
 JV5830.Click photographs - Photos may exist for this station.
 JV5830
 JV5830.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5830
 JV5830. The following values were computed from the NAD 83(1991) position.
 JV5830
 JV5830;                    North         East     Units Scale Factor Converg.
 JV5830;SPC MD       -   171,193.377   425,851.911   MT  0.99996666   +0 11 16.3
 JV5830;SPC MD       -   561,656.94  1,397,149.14   sFT  0.99996666   +0 11 16.3
 JV5830;UTM  18      - 4,341,290.886   353,163.982   MT  0.99986548   -1 04 31.0
 JV5830
 JV5830!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5830!SPC MD       -   0.99999746  x   0.99996666  =   0.99996412
 JV5830!UTM  18      -   0.99999746  x   0.99986548  =   0.99986294
 JV5830
 JV5830:                Primary Azimuth Mark                     Grid Az
 JV5830:SPC MD       -  DEEP AZ MK                               266 27 56.8
 JV5830:UTM  18      -  DEEP AZ MK                               267 43 44.1
 JV5830
 JV5830_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5316341290(NAD 83)
 JV5830
 JV5830|---------------------------------------------------------------------|
 JV5830| PID    Reference Object                     Distance      Geod. Az  |
 JV5830|                                                           dddmmss.s |
 JV5830| JV5811 BALTIMORE CALVERT DISTILLER TK      APPROX. 1.7 KM 0110103.7 |
 JV5830| JV5616 BALTIMORE TV STATION WJZ MAST       APPROX.14.6 KM 0164714.8 |
 JV5830| CA9328 DEEP RM 1                            11.015 METERS 03206     |
 JV5830| CA9329 DEEP RM 2                            10.771 METERS 18953     |
 JV5830| CA9327 DEEP AZ MK                                         2663913.1 |
 JV5830|---------------------------------------------------------------------|
 JV5830
 JV5830                          SUPERSEDED SURVEY CONTROL
 JV5830
 JV5830  NAD 83(1986)-  39 12 30.55210(N)    076 42 02.45429(W) AD(       ) 3
 JV5830  NAD 27      -  39 12 30.16640(N)    076 42 03.56430(W) AD(       ) 3
 JV5830
 JV5830.Superseded values are not recommended for survey control.
 JV5830
 JV5830.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5830.See file dsdata.pdf to determine how the superseded data were derived.
 JV5830
 JV5830_MARKER: DS = TRIANGULATION STATION DISK
 JV5830_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5830_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5830+SATELLITE: SATELLITE OBSERVATIONS - December 09, 2016
 JV5830
 JV5830  HISTORY     - Date     Condition        Report By
 JV5830  HISTORY     - 1957     MONUMENTED       CGS
 JV5830  HISTORY     - 1970     GOOD             MDDT
 JV5830  HISTORY     - 20030315 MARK NOT FOUND   USPSQD
 JV5830  HISTORY     - 20161209 GOOD             INDIV
 JV5830
 JV5830                          STATION DESCRIPTION
 JV5830
 JV5830'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5830'STATION IS LOCATED ABOUT 6-1/2 MILES SOUTHWEST OF BALTIMORE AND
 JV5830'3/4 MILE SOUTHEAST OF ELKRIDGE ON A LOW HILL THAT THE WEST SIDE
 JV5830'HAS BEEN REMOVED FOR GRAVEL.  STATION IS 92 FEET WEST NORTHWEST
 JV5830'OF PORCH OF HOUSE AND 32 FEET SOUTHEAST OF EDGE OF CUT BANK.  THE
 JV5830'MARK IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED DEEP 1957.
 JV5830'
 JV5830'REFERENCE MARK NO. 1 IS 24 FEET SOUTHEAST OF EDGE OF CUT BANK.  THE
 JV5830'MARK IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED DEEP
 JV5830'NO 1 1957.
 JV5830'
 JV5830'REFERENCE MARK NO. 2 IS 52 FEET SOUTHEAST OF EDGE OF CUT
 JV5830'BANK.  THE MARK IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED
 JV5830'DEEP NO 2 1957.
 JV5830'
 JV5830'AZIMUTH MARK IS 25 FEET EAST NORTHEAST OF THE APPROXIMATE CENTER OF
 JV5830'BLACKTOP ROAD, 11 FEET NORTHEAST OF UTILITY POLE AND 2 FEET EAST
 JV5830'NORTHEAST OF WITNESS POST.  THE MARK PROJECTS ABOUT 4 INCHES AND
 JV5830'THE DISK IS STAMPED DEEP 1957.
 JV5830'
 JV5830'TO REACH FROM THE INTERSECTION OF MAIN STREET AND FURNACE AVENUE,
 JV5830'ONE BLOCK EAST OF U.S. HIGHWAY 1 IN ELKRIDGE, GO EAST ON FURNACE
 JV5830'AVENUE FOR 0.6 MILE TO A T INTERSECTION JUST AFTER CROSSING SMALL
 JV5830'BRIDGE.  TURN RIGHT AND GO SOUTH FOR 0.25 MILE TO THE AZIMUTH
 JV5830'MARK ON LEFT AS DESCRIBED.  CONTINUE SOUTH FOR 0.3 MILE TO
 JV5830'SIDE ROAD LEFT AT TOP OF HILL.  TURN SHARP LEFT AND FOLLOW TRACK
 JV5830'ROAD NORTH NORTHEAST FOR 0.4 MILE TO END OF ROAD AT SECOND
 JV5830'HOUSE AND STATION AS DESCRIBED.
 JV5830'
 JV5830'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV5830
 JV5830                          STATION RECOVERY (1970)
 JV5830
 JV5830'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1970
 JV5830'ALL MARKS RECOVERED IN GOOD CONDITION.  BLACKTOP ROAD IS NOW
 JV5830'RIDGE ROAD.  AZIMUTH MARK IS 11.0 FEET NE OF C AND P POLE
 JV5830'6.  HOUSE HAS BEEN DESTROYED BY FIRE BUT FOUNDATION REMAINS.
 JV5830
 JV5830                          STATION RECOVERY (2003)
 JV5830
 JV5830'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV5830'MARK NOT FOUND.
 JV5830
 JV5830                          STATION RECOVERY (2016)
 JV5830
 JV5830'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2016 (DB)
 JV5830'RECOVERED AS DESCRIBED,
 JV5830'
 JV5830'NOTE 2 IRON BARS WHERE DRIVEN NEXT TO MONUMENT BECAUSE MON WAS NON-
 JV5830'MAGNETIC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9880 ***********************************************************************
 HV9880  DESIGNATION -  DEEP
 HV9880  PID         -  HV9880
 HV9880  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV9880  COUNTRY     -  US
 HV9880  USGS QUAD   -  DEALE (2016)
 HV9880
 HV9880                         *CURRENT SURVEY CONTROL
 HV9880  ______________________________________________________________________
 HV9880* NAD 83(2011) POSITION- 38 48 53.45131(N) 076 30 44.16533(W)   ADJUSTED
 HV9880* NAD 83(2011) ELLIP HT-   -32.654 (meters)        (06/27/12)   ADJUSTED
 HV9880* NAD 83(2011) EPOCH   -  2010.00
 HV9880* NAVD 88 ORTHO HEIGHT -     0.9   (meters)        3.    (feet) VERTCON3
 HV9880  ______________________________________________________________________
 HV9880  GEOID HEIGHT    -        -33.545 (meters)                     GEOID18
 HV9880  NAD 83(2011) X  -  1,160,637.391 (meters)                     COMP
 HV9880  NAD 83(2011) Y  - -4,838,966.911 (meters)                     COMP
 HV9880  NAD 83(2011) Z  -  3,976,301.869 (meters)                     COMP
 HV9880  LAPLACE CORR    -         -3.60  (seconds)                    DEFLEC18
 HV9880
 HV9880  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9880  Standards:
 HV9880         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9880            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9880  -------------------------------------------------------------------
 HV9880  NETWORK    2.02   2.29           0.91   0.72   1.17      0.01275755
 HV9880  -------------------------------------------------------------------
 HV9880  Click here for local accuracies and other accuracy information.
 HV9880
 HV9880.The horizontal coordinates were established by GPS observations
 HV9880.and adjusted by the National Geodetic Survey in June 2012.
 HV9880
 HV9880.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9880.been affixed to the stable North American tectonic plate. See 
 HV9880.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9880
 HV9880.The horizontal coordinates are valid at the epoch date displayed above
 HV9880.which is a decimal equivalence of Year/Month/Day.
 HV9880
 HV9880.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV9880.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV9880
 HV9880.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9880.GEOID18 height accuracy estimate available here.
 HV9880
 HV9880.Click photographs - Photos may exist for this station.
 HV9880
 HV9880.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9880
 HV9880.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9880
 HV9880.The ellipsoidal height was determined by GPS observations
 HV9880.and is referenced to NAD 83.
 HV9880
 HV9880. The following values were computed from the NAD 83(2011) position.
 HV9880
 HV9880;                    North         East     Units Scale Factor Converg.
 HV9880;SPC MD       -   127,565.924   442,358.047   MT  0.99995041   +0 18 22.0
 HV9880;SPC MD       -   418,522.54  1,451,303.03   sFT  0.99995041   +0 18 22.0
 HV9880;UTM  18      - 4,297,316.548   368,706.149   MT  0.99981227   -0 56 52.9
 HV9880
 HV9880!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9880!SPC MD       -   1.00000512  x   0.99995041  =   0.99995553
 HV9880!UTM  18      -   1.00000512  x   0.99981227  =   0.99981739
 HV9880
 HV9880_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6870697316(NAD 83)
 HV9880
 HV9880                          SUPERSEDED SURVEY CONTROL
 HV9880
 HV9880  NAD 83(2007)-  38 48 53.45155(N)    076 30 44.16611(W) AD(2002.00) 0
 HV9880  ELLIP H (02/10/07)  -32.628  (m)                       GP(2002.00)    
 HV9880  ELLIP H (08/30/02)  -32.621  (m)                       GP(       ) 4 2
 HV9880  NAD 83(1991)-  38 48 53.45147(N)    076 30 44.16589(W) AD(       ) 1
 HV9880  ELLIP H (12/03/93)  -32.650  (m)                       GP(       ) 4 1
 HV9880  NGVD 29 (12/03/93)    1.1    (m)  GEOID93  model used  GPS OBS        
 HV9880
 HV9880.Superseded values are not recommended for survey control.
 HV9880
 HV9880.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9880.See file dsdata.pdf to determine how the superseded data were derived.
 HV9880
 HV9880_MARKER: A = ALUMINUM MARKER
 HV9880_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9880_STAMPING: DEEP 1993
 HV9880_MARK LOGO: NOS
 HV9880_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 HV9880_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9880+STABILITY: SURFACE MOTION
 HV9880_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9880+SATELLITE: SATELLITE OBSERVATIONS - January 13, 1999
 HV9880
 HV9880  HISTORY     - Date     Condition        Report By
 HV9880  HISTORY     - 1993     MONUMENTED       NOS
 HV9880  HISTORY     - 19990113 GOOD             DMW
 HV9880  HISTORY     - 20010331 GOOD             NGS
 HV9880
 HV9880                          STATION DESCRIPTION
 HV9880
 HV9880'DESCRIBED BY NATIONAL OCEAN SERVICE 1993
 HV9880'THE STATION IS LOCATED 1.5 MI (2.4 KM) SOUTH OF SHADDY SIDE ON THE
 HV9880'WESTERN SHORE OF THE CHESAPEAKE BAY AT THE DEEP CREEK AIRPARK.
 HV9880'TO REACH THE STATION FROM THE JUNCTION OF HIGHWAYS 2 AND 255 SOUTH OF
 HV9880'HARWOOD, PROCEED EAST ON 255 FOR 3.2 MI (5.1 KM) TO ROUTE 468.  TURN
 HV9880'RIGHT AND PROCEED SOUTH AND EAST ON 468 FOR 4.6 MI (7.4 KM) TO DENT
 HV9880'ROAD ON THE RIGHT. TURN RIGHT AND PROCEED SOUTH FOR 0.5 MI (0.8 KM)
 HV9880'TO THE AIRPARK AND THE STATION ON RIGHT.
 HV9880'THE MARK IS A STANDARD NOS ALUMINUM DISK STAMPED ---DEEP 1993---
 HV9880'CONNECTED TO A 42 IN ALUMINUM ROD DRIVEN INTO THE GROUND AND
 HV9880'SURROUNDED BY CONCRETE.  THE MARK IS FLUSH WITH THE GROUND AND IS
 HV9880'LOCATED 27.50 M (90.22 FT) SOUTH OF THE WESTERNMOST OF TWO CEDAR
 HV9880'TREES, 12.40 M (40.68 FT) NNE OF THE NE EDGE OF DENT ROAD, AND 11.00
 HV9880'M (36.09 FT) EAST OF A METAL SIGN READING SPEED LIMIT 25.
 HV9880
 HV9880                          STATION RECOVERY (1999)
 HV9880
 HV9880'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1999 (JMS)
 HV9880'RECOVERED IN GOOD CONDITION.
 HV9880
 HV9880                          STATION RECOVERY (2001)
 HV9880
 HV9880'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV9880'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6611 ***********************************************************************
 HV6611  DESIGNATION -  DEEP 1908
 HV6611  PID         -  HV6611
 HV6611  STATE/COUNTY-  MD/ST MARYS
 HV6611  COUNTRY     -  US
 HV6611  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6611
 HV6611                         *CURRENT SURVEY CONTROL
 HV6611  ______________________________________________________________________
 HV6611* NAD 83(1993) POSITION- 38 11 07.78751(N) 076 26 37.01710(W)   ADJUSTED
 HV6611* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6611  ______________________________________________________________________
 HV6611  GEOID HEIGHT    -        -34.720 (meters)                     GEOID18
 HV6611  LAPLACE CORR    -         -6.14  (seconds)                    DEFLEC18
 HV6611  HORZ ORDER      -  THIRD
 HV6611
 HV6611.The horizontal coordinates were established by classical geodetic methods
 HV6611.and adjusted by the National Geodetic Survey in November 1994.
 HV6611
 HV6611.The orthometric height was scaled from a topographic map.
 HV6611
 HV6611.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6611.GEOID18 height accuracy estimate available here.
 HV6611
 HV6611.Click photographs - Photos may exist for this station.
 HV6611
 HV6611.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6611
 HV6611. The following values were computed from the NAD 83(1993) position.
 HV6611
 HV6611;                    North         East     Units Scale Factor Converg.
 HV6611;SPC MD       -    57,741.260   448,746.002   MT  1.00002189   +0 20 57.1
 HV6611;SPC MD       -   189,439.45  1,472,260.84   sFT  1.00002189   +0 20 57.1
 HV6611;UTM  18      - 4,227,381.336   373,571.124   MT  0.99979686   -0 53 33.3
 HV6611
 HV6611!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6611!SPC MD       -   1.00000518  x   1.00002189  =   1.00002707
 HV6611!UTM  18      -   1.00000518  x   0.99979686  =   0.99980204
 HV6611
 HV6611:                Primary Azimuth Mark                     Grid Az
 HV6611:SPC MD       -  PAGAN 1908                               358 56 51.6
 HV6611:UTM  18      -  PAGAN 1908                               000 11 22.0
 HV6611
 HV6611_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7357127381(NAD 83)
 HV6611
 HV6611|---------------------------------------------------------------------|
 HV6611| PID    Reference Object                     Distance      Geod. Az  |
 HV6611|                                                           dddmmss.s |
 HV6611| HV6607 MCKAY                               467.799 METERS 2202115.4 |
 HV6611| HV6612 PAGAN 1908                          APPROX. 0.5 KM 3591748.7 |
 HV6611|---------------------------------------------------------------------|
 HV6611
 HV6611                          SUPERSEDED SURVEY CONTROL
 HV6611
 HV6611  NAD 83(1991)-  38 11 07.78665(N)    076 26 37.02023(W) AD(       ) 3
 HV6611  NAD 83(1986)-  38 11 07.78721(N)    076 26 37.03363(W) AD(       ) 3
 HV6611  NAD 27      -  38 11 07.41000(N)    076 26 38.25500(W) AD(       ) 3
 HV6611  USSD        -  38 11 07.79400(N)    076 26 37.96100(W) AD(       ) 3
 HV6611
 HV6611.Superseded values are not recommended for survey control.
 HV6611
 HV6611.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6611.See file dsdata.pdf to determine how the superseded data were derived.
 HV6611
 HV6611_MARKER: H = DRILL HOLE
 HV6611_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6611_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6611+STABILITY: SURFACE MOTION
 HV6611
 HV6611  HISTORY     - Date     Condition        Report By
 HV6611  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6611  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6611  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6611
 HV6611                          STATION DESCRIPTION
 HV6611
 HV6611'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6611'STATION IS ON WESTERN SHORE OF ST. MARYS RIVER, OPPOSITE BROMES
 HV6611'WHARF, AND ON FIRST PROMINENT POINTS S OF PAGAN POINT, ABOUT 1
 HV6611'FOOT ABOVE HIGH WATER, 11 YARDS SW OF SIDE OF POINT, 12 YARDS NNW
 HV6611'OF SIDE OF POINT, 17 YARDS W OF EXTREME END OF POINT, AND NEAR
 HV6611'SEVERAL SMALL PILES OF OYSTER SHELLS.
 HV6611'
 HV6611'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6611'SHELL FISH SURVEY STANDARD MONUMENT, AND 8-INCH SQUARE CONRETE
 HV6611'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6611'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6611'POST.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE
 HV6611'AS FOLLOWS--PEAK OF ROOF BETWEEN TWO CHIMNEYS, 3/4 MILE, S 35 DEG 26
 HV6611'MIN W.  NAIL IN BLAZE IN CEDAR TREE, 21.87 METERS (71.8 FEET),
 HV6611'N 56 DEG 55 MIN W.  PEAK OF BARN, 3/8 MILE, N 02 DEG 23 MIN E.
 HV6611'CHIMNEY OF TWO-STORY HOUSE, 3/8 MILE, N 07 DEG 53 MIN E.  OUTSIDE
 HV6611'CHIMNEY OF HOUSE 1/2 MILE, N 54 DEG 25 MIN E.  SMOKE PIPE OF CABIN
 HV6611'NEAR MONUMENT, 1/2 MILE, N 67 DEG 30 MIN E.  WINDMILL ON ST. MARYS
 HV6611'SEMINARY, 1/2 MILE, N 71 DEG 18 MIN E.  PEAK OF ROOF OF BROMES
 HV6611'WHARF HOUSE, 3/8 MILE, N 82 DEG 43 MIN E.  CHIMNEY OF SMALL
 HV6611'HOUSE, 1/2 MILE, S 76 DEG 45 MIN E.  NAIL IN BLAZE IN CEDAR
 HV6611'TREE, 9.01 METERS (29.56 FEET), S 30 DEG 43 MIN E.
 HV6611
 HV6611                          STATION RECOVERY (1942)
 HV6611
 HV6611'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6611'ACCORDING TO INFORMATION RECEIVED FROM A LOCAL FARMER, THIS MARK
 HV6611'WAS DUG UP AND USED AS A DOOR STEP TO A CABIN ON THIS POINT.  THE
 HV6611'CABIN WAS REPORTED DESTROYED IN THE FLOOD OF 1933.  A SEARCH WAS
 HV6611'MADE ALSO WITHOUT RESULTS.
 HV6611
 HV6611                          STATION RECOVERY (1958)
 HV6611
 HV6611'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6611'A THOROUGH SEARCH WAS MADE FOR THIS STATION.  NO LOCAL KNOWLEDGE OF
 HV6611'THE EXISTENCE OR PAST EXISTENCE OF SUCH A STATION COULD BE
 HV6611'OBTAINED.  STATION SHOULD BE CONSIDERED DESTROYED AS STATED IN
 HV6611'1942 DESCRIPTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5038 ***********************************************************************
 JV5038  DESIGNATION -  DEEP COVE
 JV5038  PID         -  JV5038
 JV5038  STATE/COUNTY-  MD/KENT
 JV5038  COUNTRY     -  US
 JV5038  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5038
 JV5038                         *CURRENT SURVEY CONTROL
 JV5038  ______________________________________________________________________
 JV5038* NAD 83(1991) POSITION- 39 05 47.74961(N) 076 11 00.43901(W)   ADJUSTED
 JV5038* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5038  ______________________________________________________________________
 JV5038  GEOID HEIGHT    -        -33.494 (meters)                     GEOID18
 JV5038  LAPLACE CORR    -         -2.09  (seconds)                    DEFLEC18
 JV5038  HORZ ORDER      -  THIRD
 JV5038
 JV5038.The horizontal coordinates were established by classical geodetic methods
 JV5038.and adjusted by the National Geodetic Survey in January 1992.
 JV5038
 JV5038.The orthometric height was scaled from a topographic map.
 JV5038
 JV5038.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5038.GEOID18 height accuracy estimate available here.
 JV5038
 JV5038.Click photographs - Photos may exist for this station.
 JV5038
 JV5038.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5038
 JV5038. The following values were computed from the NAD 83(1991) position.
 JV5038
 JV5038;                    North         East     Units Scale Factor Converg.
 JV5038;SPC MD       -   159,045.485   470,634.092   MT  0.99995725   +0 30 45.0
 JV5038;SPC MD       -   521,801.73  1,544,072.02   sFT  0.99995725   +0 30 45.0
 JV5038;UTM  18      - 4,328,162.736   397,660.512   MT  0.99972896   -0 44 47.0
 JV5038
 JV5038!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5038!SPC MD       -   1.00000529  x   0.99995725  =   0.99996254
 JV5038!UTM  18      -   1.00000529  x   0.99972896  =   0.99973425
 JV5038
 JV5038:                Primary Azimuth Mark                     Grid Az
 JV5038:SPC MD       -  SNUB                                     004 50 31.4
 JV5038:UTM  18      -  SNUB                                     006 06 03.4
 JV5038
 JV5038_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9766028162(NAD 83)
 JV5038
 JV5038|---------------------------------------------------------------------|
 JV5038| PID    Reference Object                     Distance      Geod. Az  |
 JV5038|                                                           dddmmss.s |
 JV5038| JV5039 SNUB                                APPROX. 0.6 KM 0052116.4 |
 JV5038|---------------------------------------------------------------------|
 JV5038
 JV5038                          SUPERSEDED SURVEY CONTROL
 JV5038
 JV5038  NAD 83(1986)-  39 05 47.74417(N)    076 11 00.45077(W) AD(       ) 3
 JV5038  NAD 27      -  39 05 47.34500(N)    076 11 01.61500(W) AD(       ) 3
 JV5038  USSD        -  39 05 47.73700(N)    076 11 01.44400(W) AD(       ) 3
 JV5038
 JV5038.Superseded values are not recommended for survey control.
 JV5038
 JV5038.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5038.See file dsdata.pdf to determine how the superseded data were derived.
 JV5038
 JV5038_MARKER: H = DRILL HOLE
 JV5038_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5038_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5038+STABILITY: SURFACE MOTION
 JV5038
 JV5038  HISTORY     - Date     Condition        Report By
 JV5038  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5038  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5038
 JV5038                          STATION DESCRIPTION
 JV5038
 JV5038'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5038'STATION IS ON THE WESTERN SHORE OF CHESTER RIVER, ON POINT AT W
 JV5038'SIDE OF ENTRANCE TO LANGFORD CREEK AND S SIDE OF ENTRANCE TO
 JV5038'DEEP COVE, ON MARSHLAND, ABOUT 1 FOOT ABOVE HIGH WATER, 10 YARDS
 JV5038'INSHORE, 50 YARDS E OF DEAD TREE 2 FEET IN DIAMETER, 80 YARDS SE
 JV5038'OF A TALL POPLAR TREE, AND 300 YARDS E OF A HOUSE.
 JV5038'
 JV5038'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5038'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5038'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING 4 INCHES.  THE
 JV5038'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5038'POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED
 JV5038'WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5038'
 JV5038'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5038'FOLLOWS-SPINDLE ON GABLE OF BARN, 1-7/8 MILES, S 40 DEG 24 MIN W. LONE
 JV5038'POPLAR TREE, 1/4 MILE, S 52 DEG 36 MIN W.  NE CORNER OF ASHLEY HOUSE,
 JV5038'300 YARDS, S 81 DEG 13 MIN W.  SE CORNER OF FISHING SHACK, 200 YARDS,
 JV5038'N 62 DEG 10 MIN W. LONE PINE TREE, 1/4 MILE, N 50 DEG 43 MIN W. S
 JV5038'GABLE OF HOUSE, 1-1/8 MILES, N 07 DEG 15 MIN W. W CHIMNEY OF
 JV5038'HOUSE, 1-1/8 MILES, N 14 DEG 03 MIN W. W GABLE OF BARN, 1 MILE,
 JV5038'N 56 DEG 46 MIN E. N CHIMNEY OF HOUSE AT CLIFFS LANDING, 2
 JV5038'MILES, N 69 DEG 32 MIN E. N GABLE OF BARN, 2-3/8 MILES, S 78 DEG
 JV5038'03 MIN E. SW CORNER OF EARLE BATHHOUSE, 2-5/8 MILES, S 59 DEG 35
 JV5038'MIN E.  N GABLE OF BARN, 2-5/8 MILES, S 11 DEG 37 MIN E.
 JV5038
 JV5038                          STATION RECOVERY (1941)
 JV5038
 JV5038'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5038'THIS POINT HAS WASHED VERY MUCH AND ALL REFERENCE TREES ARE
 JV5038'GONE.  OWNER SAYS MARK WAS WASHED OUT IN STORM OF 1933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5015 ***********************************************************************
 JV5015  DESIGNATION -  DEEP POINT 2
 JV5015  PID         -  JV5015
 JV5015  STATE/COUNTY-  MD/KENT
 JV5015  COUNTRY     -  US
 JV5015  USGS QUAD   -  CENTREVILLE (2017)
 JV5015
 JV5015                         *CURRENT SURVEY CONTROL
 JV5015  ______________________________________________________________________
 JV5015* NAD 83(1991) POSITION- 39 06 32.59099(N) 076 07 08.52640(W)   ADJUSTED
 JV5015* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5015  ______________________________________________________________________
 JV5015  GEOID HEIGHT    -        -33.544 (meters)                     GEOID18
 JV5015  LAPLACE CORR    -         -2.47  (seconds)                    DEFLEC18
 JV5015  HORZ ORDER      -  THIRD
 JV5015
 JV5015.The horizontal coordinates were established by classical geodetic methods
 JV5015.and adjusted by the National Geodetic Survey in January 1992.
 JV5015
 JV5015.The orthometric height was scaled from a topographic map.
 JV5015
 JV5015.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5015.GEOID18 height accuracy estimate available here.
 JV5015
 JV5015.Click photographs - Photos may exist for this station.
 JV5015
 JV5015.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5015
 JV5015. The following values were computed from the NAD 83(1991) position.
 JV5015
 JV5015;                    North         East     Units Scale Factor Converg.
 JV5015;SPC MD       -   160,480.000   476,193.161   MT  0.99995811   +0 33 10.5
 JV5015;SPC MD       -   526,508.13  1,562,310.40   sFT  0.99995811   +0 33 10.5
 JV5015;UTM  18      - 4,329,474.464   403,248.437   MT  0.99971526   -0 42 21.4
 JV5015
 JV5015!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5015!SPC MD       -   1.00000514  x   0.99995811  =   0.99996325
 JV5015!UTM  18      -   1.00000514  x   0.99971526  =   0.99972040
 JV5015
 JV5015:                Primary Azimuth Mark                     Grid Az
 JV5015:SPC MD       -  THORN                                    039 36 38.0
 JV5015:UTM  18      -  THORN                                    040 52 09.9
 JV5015
 JV5015_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0324829474(NAD 83)
 JV5015
 JV5015|---------------------------------------------------------------------|
 JV5015| PID    Reference Object                     Distance      Geod. Az  |
 JV5015|                                                           dddmmss.s |
 JV5015| JV5005 THORN                               APPROX. 1.1 KM 0400948.5 |
 JV5015| CA9330 DEEP POINT 2 RM                      17.135 METERS 30608     |
 JV5015|---------------------------------------------------------------------|
 JV5015
 JV5015                          SUPERSEDED SURVEY CONTROL
 JV5015
 JV5015  NAD 83(1986)-  39 06 32.58526(N)    076 07 08.53828(W) AD(       ) 3
 JV5015  NAD 27      -  39 06 32.19300(N)    076 07 09.71500(W) AD(       ) 3
 JV5015  USSD        -  39 06 32.59100(N)    076 07 09.51300(W) AD(       ) 3
 JV5015
 JV5015.Superseded values are not recommended for survey control.
 JV5015
 JV5015.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5015.See file dsdata.pdf to determine how the superseded data were derived.
 JV5015
 JV5015
 JV5015  HISTORY     - Date     Condition        Report By
 JV5015  HISTORY     - 1896     MONUMENTED       MDSFC
 JV5015  HISTORY     - 1909     GOOD             CGS
 JV5015  HISTORY     - 1938     MARK NOT FOUND   CGS
 JV5015
 JV5015                          STATION DESCRIPTION
 JV5015
 JV5015'DESCRIBED BY COAST AND GEODETIC SURVEY 1909
 JV5015'STATION IS ON THE NORTHWESTERN SHORE OF CHESTER RIVER, ABOUT 1
 JV5015'1/4 MILES NE OF SPANIARD WHARF, ON DEEP POINT, AT THE EASTERN SIDE
 JV5015'OF COMMEGYS BIGHT.  STATION IS ABOUT 1 FOOT ABOVE HIGH WATER,
 JV5015'AMONG SEVERAL CEDAR AND POPLAR TREES ON POINT, 13 YARDS NE OF
 JV5015'SHORE, 21 YARDS SW BY W OF SHORE, 40 YARDS NW OF EXTREME END OF
 JV5015'POINT, AND 120 YARDS SE OF 1 1/2-STORY HOUSE.
 JV5015'
 JV5015'THE STATION IS MARKED BY A NAIL IN A CEMENT-FILLED TILE PIPE.  THE
 JV5015'TOP, 2 INCHES BELOW SURFACE, IS SURROUNDED BY CEMENT BEARING THE
 JV5015'LEGEND U.S.C.S. 1896.  THE UNDERGROUND MARK IS A GLASS BOTTLE
 JV5015'BURIED 3 FEET BELOW THE SURFACE OF THE GROUND WITH THE NECK UP AND
 JV5015'SURROUNDED WITH CEMENT.
 JV5015'
 JV5015'REFERENCE MARK, SET IN 1909, IS MARKED BY A HOLE IN THE CENTER
 JV5015'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 JV5015'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 JV5015'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 JV5015'COUNTER-SUNK IN TOP OF POST.  IT IS 17.14 METERS (56.2 FEET) FROM
 JV5015'THE STATION N 53 DEG 52 MIN W.
 JV5015'
 JV5015'DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 JV5015'REFERENCE ARE AS FOLLOWS--CHIMNEY OF BRICK HOUSE, 1 MILE, S 13 DEG
 JV5015'35 MIN W.  CHIMNEY ON NEAR PEAK OF HOUSE, 1-1/4 MILES, N 86 DEG 11
 JV5015'MIN W.  NAIL IN BLAZE IN 10-INCH POPLAR TREE, 17.78 METERS (58.3
 JV5015'FEET), N 53 DEG 50 MIN W. RIGHT TANGENT OF BACK OF WESCOTT HOUSE,
 JV5015'120 YARDS, N 39 DEG 54 MIN W. NAIL IN BRANCH OF 8-INCH DOUBLE
 JV5015'TREE, 19.74 METERS (64.8 FEET), N 20 DEG 53 MIN E. LEFT TANGENT OF
 JV5015'ASHLAND WHARF, 1-3/8 MILES, N 53 DEG 14 MIN E. NEAR CHIMNEY ON W
 JV5015'PEAK OF HOUSE, 2-1/2 MILES, N 63 DEG 08 MIN E. SW PEAK OF HOUSE
 JV5015'NEAR INDIANTOWN WHARF, 7/8 MILE, N 71 DEG 33 MIN E.  NAIL IN
 JV5015'BLAZE IN BRANCH OF 15-INCH CEDAR TREE, 11.48 METERS (37.7
 JV5015'FEET), N 85 DEG 37 MIN E. CUPOLA ON BARN, 1 MILE, S 78 DEG 07
 JV5015'MIN E.  NAIL IN BLAZE IN 11-INCH POPLAR TREE, 15.02 METERS (49.3
 JV5015'FEET), S 45 DEG 56 MIN E. LARGEST ONE OF THREE CHIMNEYS OF
 JV5015'HOUSE, 1-1/4 MILES, S 37 DEG 43 MIN E.
 JV5015
 JV5015                          STATION RECOVERY (1938)
 JV5015
 JV5015'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5015'STATION LOST BY EROSION.  THE REFERENCE MARK ESTABLISHED IN 1909,
 JV5015'WAS FOUND LYING ON ITS SIDE ON THE BEACH, OUT OF POSITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5951 ***********************************************************************
 HV5951  DESIGNATION -  DEEPWATER 1901
 HV5951  PID         -  HV5951
 HV5951  STATE/COUNTY-  MD/DORCHESTER
 HV5951  COUNTRY     -  US
 HV5951  USGS QUAD   -  CHURCH CREEK (2016)
 HV5951
 HV5951                         *CURRENT SURVEY CONTROL
 HV5951  ______________________________________________________________________
 HV5951* NAD 83(1991) POSITION- 38 31 33.84889(N) 076 11 18.65066(W)   ADJUSTED
 HV5951* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5951  ______________________________________________________________________
 HV5951  GEOID HEIGHT    -        -34.875 (meters)                     GEOID18
 HV5951  LAPLACE CORR    -         -5.11  (seconds)                    DEFLEC18
 HV5951  HORZ ORDER      -  THIRD
 HV5951
 HV5951.The horizontal coordinates were established by classical geodetic methods
 HV5951.and adjusted by the National Geodetic Survey in January 1992.
 HV5951
 HV5951.The orthometric height was scaled from a topographic map.
 HV5951
 HV5951.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5951.GEOID18 height accuracy estimate available here.
 HV5951
 HV5951.Click photographs - Photos may exist for this station.
 HV5951
 HV5951.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5951
 HV5951. The following values were computed from the NAD 83(1991) position.
 HV5951
 HV5951;                    North         East     Units Scale Factor Converg.
 HV5951;SPC MD       -    95,711.575   470,759.470   MT  0.99996837   +0 30 33.5
 HV5951;SPC MD       -   314,013.73  1,544,483.36   sFT  0.99996837   +0 30 33.5
 HV5951;UTM  18      - 4,264,855.443   396,399.782   MT  0.99973217   -0 44 25.3
 HV5951
 HV5951!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5951!SPC MD       -   1.00000519  x   0.99996837  =   0.99997356
 HV5951!UTM  18      -   1.00000519  x   0.99973217  =   0.99973736
 HV5951
 HV5951:                Primary Azimuth Mark                     Grid Az
 HV5951:SPC MD       -  NEIL 1901                                026 43 20.3
 HV5951:UTM  18      -  NEIL 1901                                027 58 19.1
 HV5951
 HV5951_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9639964855(NAD 83)
 HV5951
 HV5951|---------------------------------------------------------------------|
 HV5951| PID    Reference Object                     Distance      Geod. Az  |
 HV5951|                                                           dddmmss.s |
 HV5951| HV5920 NEIL 1901                           426.936 METERS 0271353.8 |
 HV5951| HV5923 ORCHARD 1901                        398.619 METERS 09107     |
 HV5951|---------------------------------------------------------------------|
 HV5951
 HV5951                          SUPERSEDED SURVEY CONTROL
 HV5951
 HV5951  NAD 83(1986)-  38 31 33.84646(N)    076 11 18.66657(W) AD(       ) 3
 HV5951  NAD 27      -  38 31 33.43900(N)    076 11 19.85300(W) AD(       ) 3
 HV5951  USSD        -  38 31 33.84600(N)    076 11 19.63300(W) AD(       ) 3
 HV5951
 HV5951.Superseded values are not recommended for survey control.
 HV5951
 HV5951.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5951.See file dsdata.pdf to determine how the superseded data were derived.
 HV5951
 HV5951
 HV5951  HISTORY     - Date     Condition        Report By
 HV5951  HISTORY     - 1901     MONUMENTED       CGS
 HV5951  HISTORY     - 1903     GOOD             CGS
 HV5951  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV5951
 HV5951                          STATION DESCRIPTION
 HV5951
 HV5951'DESCRIBED BY COAST AND GEODETIC SURVEY 1903
 HV5951'ON THE S SIDE OF FISHING CREEK, ON BANK AT EDGE OF ASPARAGUS BED,
 HV5951'ON LAND BELONGING TO CAPTAIN WOOLFORD, ABOUT 100 METERS W OF OLD
 HV5951'WHARF, 47.55 METERS (156.0 FEET) W FROM LARGE CHERRY TREE IN HOUSE
 HV5951'YARD AND 37.22 METERS (122.1 FEET) SW 1/2 W FROM PERSIMMON TREE ON
 HV5951'EDGE OF MARSH.  STATION MARKED BY A CEDAR STUB.
 HV5951
 HV5951                          STATION RECOVERY (1942)
 HV5951
 HV5951'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV5951'STATION PLOTS IN WATER AND IS CONSIDERED LOST BY PHOTOGRAMMETRY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5711 ***********************************************************************
 HV5711  DESIGNATION -  DEEPWATER POINT
 HV5711  PID         -  HV5711
 HV5711  STATE/COUNTY-  MD/TALBOT
 HV5711  COUNTRY     -  US
 HV5711  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5711
 HV5711                         *CURRENT SURVEY CONTROL
 HV5711  ______________________________________________________________________
 HV5711* NAD 83(1991) POSITION- 38 48 17.61142(N) 076 12 38.33514(W)   ADJUSTED
 HV5711* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5711  ______________________________________________________________________
 HV5711  GEOID HEIGHT    -        -34.321 (meters)                     GEOID18
 HV5711  LAPLACE CORR    -         -4.73  (seconds)                    DEFLEC18
 HV5711  HORZ ORDER      -  THIRD
 HV5711
 HV5711.The horizontal coordinates were established by classical geodetic methods
 HV5711.and adjusted by the National Geodetic Survey in January 1992.
 HV5711
 HV5711.The orthometric height was scaled from a topographic map.
 HV5711
 HV5711.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5711.GEOID18 height accuracy estimate available here.
 HV5711
 HV5711.Click photographs - Photos may exist for this station.
 HV5711
 HV5711.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5711
 HV5711. The following values were computed from the NAD 83(1991) position.
 HV5711
 HV5711;                    North         East     Units Scale Factor Converg.
 HV5711;SPC MD       -   126,644.064   468,561.822   MT  0.99995061   +0 29 43.5
 HV5711;SPC MD       -   415,498.07  1,537,273.24   sFT  0.99995061   +0 29 43.5
 HV5711;UTM  18      - 4,295,821.643   394,878.817   MT  0.99973607   -0 45 31.5
 HV5711
 HV5711!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5711!SPC MD       -   1.00000542  x   0.99995061  =   0.99995603
 HV5711!UTM  18      -   1.00000542  x   0.99973607  =   0.99974149
 HV5711
 HV5711:                Primary Azimuth Mark                     Grid Az
 HV5711:SPC MD       -  HAMBLETON                                321 17 53.2
 HV5711:UTM  18      -  HAMBLETON                                322 33 08.2
 HV5711
 HV5711_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9487895821(NAD 83)
 HV5711
 HV5711|---------------------------------------------------------------------|
 HV5711| PID    Reference Object                     Distance      Geod. Az  |
 HV5711|                                                           dddmmss.s |
 HV5711| HV5730 HAMBLETON                           APPROX. 2.2 KM 3214736.7 |
 HV5711|---------------------------------------------------------------------|
 HV5711
 HV5711                          SUPERSEDED SURVEY CONTROL
 HV5711
 HV5711  NAD 83(1986)-  38 48 17.60720(N)    076 12 38.34878(W) AD(       ) 3
 HV5711  NAD 27      -  38 48 17.15300(N)    076 12 39.56500(W) AD(       ) 3
 HV5711  USSD        -  38 48 17.53300(N)    076 12 39.34000(W) AD(       ) 3
 HV5711
 HV5711.Superseded values are not recommended for survey control.
 HV5711
 HV5711.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5711.See file dsdata.pdf to determine how the superseded data were derived.
 HV5711
 HV5711_MARKER: Z = SEE DESCRIPTION
 HV5711_SETTING: 0 = UNSPECIFIED SETTING
 HV5711_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5711
 HV5711  HISTORY     - Date     Condition        Report By
 HV5711  HISTORY     - 1899     MONUMENTED       CGS
 HV5711
 HV5711                          STATION DESCRIPTION
 HV5711
 HV5711'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (JWD)
 HV5711'STATION IS ON WESTERN SHORE OF MILES RIVER, ON DEEP WATER POINT,
 HV5711'OPPOSITE FAIRVIEW POINT.  STATION IS ON LOW-SAND HILL, AND WAS
 HV5711'MARKED WITH A CEDAR STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7294 ***********************************************************************
 JV7294  DESIGNATION -  DEERFIELD 2
 JV7294  PID         -  JV7294
 JV7294  STATE/COUNTY-  MD/HARFORD
 JV7294  COUNTRY     -  US
 JV7294  USGS QUAD   -  EDGEWOOD (2016)
 JV7294
 JV7294                         *CURRENT SURVEY CONTROL
 JV7294  ______________________________________________________________________
 JV7294* NAD 83(2011) POSITION- 39 25 23.10108(N) 076 17 29.75353(W)   ADJUSTED
 JV7294* NAD 83(2011) ELLIP HT-   -19.714 (meters)        (06/27/12)   ADJUSTED
 JV7294* NAD 83(2011) EPOCH   -  2010.00
 JV7294* NAVD 88 ORTHO HEIGHT -    13.4   (meters)       44.    (feet) GPS OBS
 JV7294  ______________________________________________________________________
 JV7294  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7294  GEOID HEIGHT    -        -33.420 (meters)                     GEOID93
 JV7294  GEOID HEIGHT    -        -33.134 (meters)                     GEOID18
 JV7294  NAD 83(2011) X  -  1,169,171.826 (meters)                     COMP
 JV7294  NAD 83(2011) Y  - -4,793,080.914 (meters)                     COMP
 JV7294  NAD 83(2011) Z  -  4,028,698.002 (meters)                     COMP
 JV7294  LAPLACE CORR    -         -2.73  (seconds)                    DEFLEC18
 JV7294
 JV7294  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7294  Standards:
 JV7294         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7294            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7294  -------------------------------------------------------------------
 JV7294  NETWORK    1.19   2.43           0.52   0.43   1.24      0.27779840
 JV7294  -------------------------------------------------------------------
 JV7294  Click here for local accuracies and other accuracy information.
 JV7294
 JV7294.The horizontal coordinates were established by GPS observations
 JV7294.and adjusted by the National Geodetic Survey in June 2012.
 JV7294
 JV7294.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7294.been affixed to the stable North American tectonic plate. See 
 JV7294.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7294
 JV7294.The horizontal coordinates are valid at the epoch date displayed above
 JV7294.which is a decimal equivalence of Year/Month/Day.
 JV7294
 JV7294.The orthometric height was determined by GPS observations and a
 JV7294.high-resolution geoid model.
 JV7294
 JV7294.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7294.GEOID18 height accuracy estimate available here.
 JV7294
 JV7294.Click photographs - Photos may exist for this station.
 JV7294
 JV7294.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7294
 JV7294.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7294
 JV7294.The ellipsoidal height was determined by GPS observations
 JV7294.and is referenced to NAD 83.
 JV7294
 JV7294. The following values were computed from the NAD 83(2011) position.
 JV7294
 JV7294;                    North         East     Units Scale Factor Converg.
 JV7294;SPC MD       -   195,211.982   460,998.272   MT  0.99999540   +0 26 40.6
 JV7294;SPC MD       -   640,457.98  1,512,458.50   sFT  0.99999540   +0 26 40.6
 JV7294;UTM  18      - 4,364,524.172   388,825.518   MT  0.99975218   -0 49 13.1
 JV7294
 JV7294!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7294!SPC MD       -   1.00000309  x   0.99999540  =   0.99999849
 JV7294!UTM  18      -   1.00000309  x   0.99975218  =   0.99975527
 JV7294
 JV7294:                Primary Azimuth Mark                     Grid Az
 JV7294:SPC MD       -  DEERFIELD AZ MK 2                        062 08 41.8
 JV7294:UTM  18      -  DEERFIELD AZ MK 2                        063 24 35.5
 JV7294
 JV7294_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8882564524(NAD 83)
 JV7294
 JV7294|---------------------------------------------------------------------|
 JV7294| PID    Reference Object                     Distance      Geod. Az  |
 JV7294|                                                           dddmmss.s |
 JV7294| JV7295 DEERFIELD AZ MK 2                   480.471 METERS 0623522.4 |
 JV7294|---------------------------------------------------------------------|
 JV7294
 JV7294                          SUPERSEDED SURVEY CONTROL
 JV7294
 JV7294  NAD 83(2007)-  39 25 23.10122(N)    076 17 29.75430(W) AD(2002.00) 0
 JV7294  ELLIP H (02/10/07)  -19.695  (m)                       GP(2002.00)    
 JV7294  ELLIP H (08/30/02)  -19.683  (m)                       GP(       ) 4 2
 JV7294  NAD 83(1991)-  39 25 23.10056(N)    076 17 29.75434(W) AD(       ) 1
 JV7294  ELLIP H (08/17/94)  -19.737  (m)                       GP(       ) 4 1
 JV7294
 JV7294.Superseded values are not recommended for survey control.
 JV7294
 JV7294.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7294.See file dsdata.pdf to determine how the superseded data were derived.
 JV7294
 JV7294_MARKER: DD = SURVEY DISK
 JV7294_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7294_STAMPING: 2 DEERFIELD 2 1993
 JV7294_MARK LOGO: MD-025
 JV7294_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7294_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7294+STABILITY: SURFACE MOTION
 JV7294_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7294+SATELLITE: SATELLITE OBSERVATIONS - May 05, 2001
 JV7294
 JV7294  HISTORY     - Date     Condition        Report By
 JV7294  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7294  HISTORY     - 20010505 GOOD             USPSQD
 JV7294
 JV7294                          STATION DESCRIPTION
 JV7294
 JV7294'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7294'THE STATION IS LOCATED IN SOUTHWESTERN HARFORD COUNTY, MARYLAND IN THE
 JV7294'VILLAGE OF EDGEWOOD AT THE DEERFIELD ELEMENTARY SCHOOL.
 JV7294'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV7294'STATE HIGHWAY 755/EDGEWOOD ROAD, PROCEED SOUTH ALONG STATE HIGHWAY
 JV7294'755/EDGEWOOD ROAD 1.1 MILES TO ITS INTERSECTION WITH WILLOUGHBY BEACH
 JV7294'ROAD.  TURN LEFT AND PROCEED EAST ALONG WILLOUGHBY BEACH ROAD.  TURN
 JV7294'LEFT AND PROCEED EAST ALONG WILLOUGHBY BEACH ROAD 0.1 MILES TO
 JV7294'DEERFIELD ELEMENTARY SCHOOL AND THE STATION ON THE RIGHT.
 JV7294'THE STATION IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7294'CONCRETE FLUSH WITH THE GROUND STAMPED 2 DEERFIELD 2 1993.
 JV7294'THE STATION IS 27.8 FEET SOUTHEAST FROM POWER POLE NUMBER 5 1/2, 49.4
 JV7294'FEET WEST FROM THE EDGE OF PAVEMENT TO DEERFIELD ELEMENTARY DRIVEWAY,
 JV7294'AND 61.5 FEET NORTH FROM THE NORTHEAST CORNER OF A SCHOOL BUILDING.
 JV7294
 JV7294                          STATION RECOVERY (2001)
 JV7294
 JV7294'RECOVERY NOTE BY US POWER SQUADRON 2001
 JV7294'STATION IS 200 FEET WEST/SOUTHWEST OF DEERFIELD ELEMENTARY SCHOOL SIGN
 JV7294'AND IS 61.5 FEET NORTH OF THE NORTHEAST CORNER OF THE KINDERGARDEN
 JV7294'SCHOOL BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7295 ***********************************************************************
 JV7295  DESIGNATION -  DEERFIELD AZ MK 2
 JV7295  PID         -  JV7295
 JV7295  STATE/COUNTY-  MD/HARFORD
 JV7295  COUNTRY     -  US
 JV7295  USGS QUAD   -  EDGEWOOD (2016)
 JV7295
 JV7295                         *CURRENT SURVEY CONTROL
 JV7295  ______________________________________________________________________
 JV7295* NAD 83(2011) POSITION- 39 25 30.27292(N) 076 17 11.92073(W)   ADJUSTED
 JV7295* NAD 83(2011) ELLIP HT-   -18.500 (meters)        (06/27/12)   ADJUSTED
 JV7295* NAD 83(2011) EPOCH   -  2010.00
 JV7295* NAVD 88 ORTHO HEIGHT -    14.6   (meters)       48.    (feet) GPS OBS
 JV7295  ______________________________________________________________________
 JV7295  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7295  GEOID HEIGHT    -        -33.420 (meters)                     GEOID93
 JV7295  GEOID HEIGHT    -        -33.138 (meters)                     GEOID18
 JV7295  NAD 83(2011) X  -  1,169,553.136 (meters)                     COMP
 JV7295  NAD 83(2011) Y  - -4,792,844.269 (meters)                     COMP
 JV7295  NAD 83(2011) Z  -  4,028,869.625 (meters)                     COMP
 JV7295  LAPLACE CORR    -         -2.66  (seconds)                    DEFLEC18
 JV7295
 JV7295  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7295  Standards:
 JV7295         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7295            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7295  -------------------------------------------------------------------
 JV7295  NETWORK    1.69   3.57           0.76   0.58   1.82      0.30680110
 JV7295  -------------------------------------------------------------------
 JV7295  Click here for local accuracies and other accuracy information.
 JV7295
 JV7295.The horizontal coordinates were established by GPS observations
 JV7295.and adjusted by the National Geodetic Survey in June 2012.
 JV7295
 JV7295.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7295.been affixed to the stable North American tectonic plate. See 
 JV7295.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7295
 JV7295.The horizontal coordinates are valid at the epoch date displayed above
 JV7295.which is a decimal equivalence of Year/Month/Day.
 JV7295
 JV7295.The orthometric height was determined by GPS observations and a
 JV7295.high-resolution geoid model.
 JV7295
 JV7295.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7295.GEOID18 height accuracy estimate available here.
 JV7295
 JV7295.Click photographs - Photos may exist for this station.
 JV7295
 JV7295.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7295
 JV7295.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7295
 JV7295.The ellipsoidal height was determined by GPS observations
 JV7295.and is referenced to NAD 83.
 JV7295
 JV7295. The following values were computed from the NAD 83(2011) position.
 JV7295
 JV7295;                    North         East     Units Scale Factor Converg.
 JV7295;SPC MD       -   195,436.474   461,423.071   MT  0.99999574   +0 26 51.8
 JV7295;SPC MD       -   641,194.50  1,513,852.19   sFT  0.99999574   +0 26 51.8
 JV7295;UTM  18      - 4,364,739.180   389,255.063   MT  0.99975100   -0 49 01.9
 JV7295
 JV7295!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7295!SPC MD       -   1.00000290  x   0.99999574  =   0.99999864
 JV7295!UTM  18      -   1.00000290  x   0.99975100  =   0.99975390
 JV7295
 JV7295:                Primary Azimuth Mark                     Grid Az
 JV7295:SPC MD       -  DEERFIELD 2                              242 08 41.9
 JV7295:UTM  18      -  DEERFIELD 2                              243 24 35.6
 JV7295
 JV7295_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8925564739(NAD 83)
 JV7295
 JV7295|---------------------------------------------------------------------|
 JV7295| PID    Reference Object                     Distance      Geod. Az  |
 JV7295|                                                           dddmmss.s |
 JV7295| JV7294 DEERFIELD 2                         480.471 METERS 2423533.7 |
 JV7295|---------------------------------------------------------------------|
 JV7295
 JV7295                          SUPERSEDED SURVEY CONTROL
 JV7295
 JV7295  NAD 83(2007)-  39 25 30.27307(N)    076 17 11.92148(W) AD(2002.00) 0
 JV7295  ELLIP H (02/10/07)  -18.481  (m)                       GP(2002.00)    
 JV7295  ELLIP H (08/30/02)  -18.471  (m)                       GP(       ) 4 2
 JV7295  NAD 83(1991)-  39 25 30.27233(N)    076 17 11.92144(W) AD(       ) 1
 JV7295  ELLIP H (08/17/94)  -18.517  (m)                       GP(       ) 4 1
 JV7295
 JV7295.Superseded values are not recommended for survey control.
 JV7295
 JV7295.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7295.See file dsdata.pdf to determine how the superseded data were derived.
 JV7295
 JV7295_MARKER: DD = SURVEY DISK
 JV7295_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7295_STAMPING: 2 DEERFIELD AZ MK 2 1993
 JV7295_MARK LOGO: MD-025
 JV7295_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7295_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7295+STABILITY: SURFACE MOTION
 JV7295_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7295+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7295
 JV7295  HISTORY     - Date     Condition        Report By
 JV7295  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7295  HISTORY     - 20010505 MARK NOT FOUND   USPSQD
 JV7295
 JV7295                          STATION DESCRIPTION
 JV7295
 JV7295'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7295'THE AZIMUTH MARK IS LOCATED IN SOUTHWESTERN HARFORD COUNTY, MARYLAND
 JV7295'IN THE VILLAGE OF EDGEWOOD AT THE DEERFIELD ELEMENTARY SCHOOL.
 JV7295'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV7295'STATE HIGHWAY 755/EDGEWOOD ROAD, PROCEED SOUTH ALONG STATE HIGHWAY
 JV7295'755/EDGEWOOD ROAD 1.1 MILES TO ITS INTERSECTION WITH WILLOUGHBY BEACH
 JV7295'ROAD.  TURN LEFT AND PROCEED EAST ALONG WILLOUGHBY BEACH ROAD 0.1
 JV7295'MILES TO DEERFIELD ELEMENTARY SCHOOL PASSING THE STATION ON THE
 JV7295'RIGHT. CONTINUE EAST ALONG WILLOUGHBY BEACH ROAD 0.3 MILES TO THE
 JV7295'AZIMUTH MARK ON THE RIGHT.
 JV7295'THE AZIMUTH MARK IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7295'CONCRETE FLUSH WITH THE GROUND STAMPED 2 DEERFIELD AZ MK 2 1993.
 JV7295'THE AZIMUTH MARK IS 16.5 FEET NORTHEAST FROM A STORM GRATE, 3.3 FEET
 JV7295'NORTHWEST FROM THE END OF SIDEWALK, AND 1.0 FEET SOUTHWEST OF THE
 JV7295'EDGE OF SIDEWALK.
 JV7295
 JV7295                          STATION RECOVERY (2001)
 JV7295
 JV7295'RECOVERY NOTE BY US POWER SQUADRON 2001
 JV7295'AZIMUTH NOT RECOVERED. SURVEYOR MARK ON SIDEWALK BUT NO AZIMUTH FOUND.
 JV7295'NEW GAS LINES RECENTLY INSTALLED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6219 ***********************************************************************
 DN6219  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6219  DESIGNATION -  DEERHAVEN
 DN6219  PID         -  DN6219
 DN6219  STATE/COUNTY-  MD/CECIL
 DN6219  COUNTRY     -  US
 DN6219  USGS QUAD   -  ELKTON (2016)
 DN6219
 DN6219                         *CURRENT SURVEY CONTROL
 DN6219  ______________________________________________________________________
 DN6219* NAD 83(2011) POSITION- 39 32 19.65312(N) 075 50 43.16624(W)   ADJUSTED
 DN6219* NAD 83(2011) ELLIP HT-   -12.610 (meters)        (06/27/12)   ADJUSTED
 DN6219* NAD 83(2011) EPOCH   -  2010.00
 DN6219* NAVD 88 ORTHO HEIGHT -    20.68  (meters)       67.8   (feet) GPS OBS
 DN6219  ______________________________________________________________________
 DN6219  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6219  GEOID HEIGHT    -        -33.260 (meters)                     GEOID03
 DN6219  GEOID HEIGHT    -        -33.288 (meters)                     GEOID18
 DN6219  NAD 83(2011) X  -  1,204,472.988 (meters)                     COMP
 DN6219  NAD 83(2011) Y  - -4,775,914.208 (meters)                     COMP
 DN6219  NAD 83(2011) Z  -  4,038,617.918 (meters)                     COMP
 DN6219  LAPLACE CORR    -         -0.51  (seconds)                    DEFLEC18
 DN6219
 DN6219  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6219  Standards:
 DN6219         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6219            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6219  -------------------------------------------------------------------
 DN6219  NETWORK    0.53   1.04           0.24   0.19   0.53     -0.01397838
 DN6219  -------------------------------------------------------------------
 DN6219  Click here for local accuracies and other accuracy information.
 DN6219
 DN6219.The horizontal coordinates were established by GPS observations
 DN6219.and adjusted by the National Geodetic Survey in June 2012.
 DN6219
 DN6219.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6219.been affixed to the stable North American tectonic plate. See 
 DN6219.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6219
 DN6219.The horizontal coordinates are valid at the epoch date displayed above
 DN6219.which is a decimal equivalence of Year/Month/Day.
 DN6219
 DN6219.The orthometric height was determined by GPS observations and a
 DN6219.high-resolution geoid model using precise GPS observation and
 DN6219.processing techniques.
 DN6219
 DN6219.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6219.GEOID18 height accuracy estimate available here.
 DN6219
 DN6219.Click photographs - Photos may exist for this station.
 DN6219
 DN6219.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6219
 DN6219.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6219
 DN6219.The ellipsoidal height was determined by GPS observations
 DN6219.and is referenced to NAD 83.
 DN6219
 DN6219. The following values were computed from the NAD 83(2011) position.
 DN6219
 DN6219;                    North         East     Units Scale Factor Converg.
 DN6219;SPC MD       -   208,449.693   499,261.416   MT  1.00001674   +0 43 29.0
 DN6219;SPC MD       -   683,888.70  1,637,993.50   sFT  1.00001674   +0 43 29.0
 DN6219;UTM  18      - 4,376,910.882   427,359.794   MT  0.99966496   -0 32 17.4
 DN6219
 DN6219!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6219!SPC MD       -   1.00000198  x   1.00001674  =   1.00001872
 DN6219!UTM  18      -   1.00000198  x   0.99966496  =   0.99966694
 DN6219
 DN6219_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2735976910(NAD 83)
 DN6219
 DN6219                          SUPERSEDED SURVEY CONTROL
 DN6219
 DN6219  NAD 83(2007)-  39 32 19.65328(N)    075 50 43.16683(W) AD(2002.00) 1
 DN6219  ELLIP H (02/23/12)  -12.566  (m)                       GP(2002.00) 4 1
 DN6219
 DN6219.Superseded values are not recommended for survey control.
 DN6219
 DN6219.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6219.See file dsdata.pdf to determine how the superseded data were derived.
 DN6219
 DN6219_MARKER: DD = SURVEY DISK
 DN6219_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6219_STAMPING: DEERHAVEN 2008
 DN6219_MARK LOGO: MD-015
 DN6219_PROJECTION: FLUSH
 DN6219_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6219_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6219+STABILITY: SURFACE MOTION
 DN6219_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6219+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6219
 DN6219  HISTORY     - Date     Condition        Report By
 DN6219  HISTORY     - 20081204 MONUMENTED       GWS
 DN6219
 DN6219                          STATION DESCRIPTION
 DN6219
 DN6219'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6219'THE STATION IS LOCATED ABOUT 6.7 MI (10.8 KM) SOUTHEAST OF NORTH EAST,
 DN6219'4.7 MI (7.6 KM) SOUTH OF ELKTON AND 2.1 MI (3.4 KM) WEST-NORTHWEST OF
 DN6219'CHESAPEAKE CITY.
 DN6219'
 DN6219'TO REACH FROM THE JUNCTION OF US 40 AND MD 213, GO SOUTH-SOUTHEAST ON
 DN6219'MD 213 FOR 3.36 MI (5.4 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DN6219'SOUTHWEST ON ELK FOREST ROAD FOR 2.82 MI (4.5 KM) TO A SIDE ROAD ON
 DN6219'THE LEFT.  TURN LEFT AND GO SOUTHEAST ON YELLOWFIELD BOULEVARD FOR
 DN6219'0.34 MI (0.5 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO
 DN6219'SOUTH-SOUTHWEST ON BLUEFIELD DRIVE FOR 0.15 MI (0.2 KM) TO THE
 DN6219'INTERSECTION OF BROWNFIELD LOOP AND THE STATION ON THE LEFT IN THE
 DN6219'EAST ANGLE.
 DN6219'
 DN6219'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6219'CONCRETE MONUMENT, 35.4 FT (10.8 M) NORTHEAST OF THE SOUTHWEST EDGE OF
 DN6219'PAVING OF BROWNFIELD LOOP, 61.9 FT (18.9 M) EAST OF A TRANSFORMER ON
 DN6219'THE NORTHWEST SIDE OF THE INTERSECTION AND 70 FT (21.3 M) SOUTHWEST OF
 DN6219'THE SOUTHWEST CORNER OF THE HOUSE ON 4 BROWNFIELD LOOP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0419 ***********************************************************************
 HU0419  DESIGNATION -  DEERSHEAD
 HU0419  PID         -  HU0419
 HU0419  STATE/COUNTY-  MD/WICOMICO
 HU0419  COUNTRY     -  US
 HU0419  USGS QUAD   -  DELMAR (2016)
 HU0419
 HU0419                         *CURRENT SURVEY CONTROL
 HU0419  ______________________________________________________________________
 HU0419* NAD 83(1991) POSITION- 38 23 02.52549(N) 075 35 20.55900(W)   ADJUSTED
 HU0419* NAVD 88 ORTHO HEIGHT -     8.270 (meters)       27.13  (feet) ADJUSTED
 HU0419  ______________________________________________________________________
 HU0419  GEOID HEIGHT    -        -35.798 (meters)                     GEOID18
 HU0419  LAPLACE CORR    -         -1.24  (seconds)                    DEFLEC18
 HU0419  DYNAMIC HEIGHT  -          8.265 (meters)       27.12  (feet) COMP
 HU0419  MODELED GRAVITY -    980,007.2   (mgal)                       NAVD 88
 HU0419
 HU0419  HORZ ORDER      -  SECOND
 HU0419  VERT ORDER      -  FIRST     CLASS I
 HU0419
 HU0419.The horizontal coordinates were established by classical geodetic methods
 HU0419.and adjusted by the National Geodetic Survey in January 1992.
 HU0419
 HU0419.The orthometric height was determined by differential leveling and
 HU0419.adjusted by the NATIONAL GEODETIC SURVEY
 HU0419.in June 1991.
 HU0419
 HU0419.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0419.GEOID18 height accuracy estimate available here.
 HU0419
 HU0419.Click photographs - Photos may exist for this station.
 HU0419
 HU0419.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0419
 HU0419.The dynamic height is computed by dividing the NAVD 88
 HU0419.geopotential number by the normal gravity value computed on the
 HU0419.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0419.degrees latitude (g = 980.6199 gals.).
 HU0419
 HU0419.The modeled gravity was interpolated from observed gravity values.
 HU0419
 HU0419. The following values were computed from the NAD 83(1991) position.
 HU0419
 HU0419;                    North         East     Units Scale Factor Converg.
 HU0419;SPC MD       -    80,583.574   523,272.087   MT  0.99998644   +0 53 08.0
 HU0419;SPC MD       -   264,381.28  1,716,768.51   sFT  0.99998644   +0 53 08.0
 HU0419;UTM  18      - 4,248,590.091   448,554.145   MT  0.99963259   -0 21 56.7
 HU0419
 HU0419!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0419!SPC MD       -   1.00000432  x   0.99998644  =   0.99999076
 HU0419!UTM  18      -   1.00000432  x   0.99963259  =   0.99963691
 HU0419
 HU0419:                Primary Azimuth Mark                     Grid Az
 HU0419:SPC MD       -  DEERSHEAD AZ MK                          028 10 05.5
 HU0419:UTM  18      -  DEERSHEAD AZ MK                          029 25 10.2
 HU0419
 HU0419_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4855448590(NAD 83)
 HU0419
 HU0419|---------------------------------------------------------------------|
 HU0419| PID    Reference Object                     Distance      Geod. Az  |
 HU0419|                                                           dddmmss.s |
 HU0419| HU1707 SALISBURY TV STA WBOC TOWER         APPROX. 2.4 KM 0183456.2 |
 HU0419| DC7209 DEERSHEAD AZ MK                                    0290313.5 |
 HU0419| HU0418 DEERSHEAD RM 1                       22.917 METERS 07129     |
 HU0419| HU1708 SALISBURY RADIO WBOC NW MAST        APPROX. 0.8 KM 0853317.9 |
 HU0419| HU1709 SALISBURY RADIO WBOC SE MAST        APPROX. 0.9 KM 0894927.7 |
 HU0419| HU1706 SALISBURY NORTH MUNICIPAL TANK      230.948 METERS 14441     |
 HU0419| HU0420 DEERSHEAD RM 2                       25.326 METERS 22838     |
 HU0419| HU1713 SALISBURY E SHORE PUB SERV MST      APPROX. 1.6 KM 2921735.6 |
 HU0419|---------------------------------------------------------------------|
 HU0419
 HU0419                          SUPERSEDED SURVEY CONTROL
 HU0419
 HU0419  NAD 83(1986)-  38 23 02.51761(N)    075 35 20.58386(W) AD(       ) 2
 HU0419  NAD 27      -  38 23 02.10100(N)    075 35 21.85000(W) AD(       ) 2
 HU0419  NGVD 29               8.52   (m)           28.0    (f) LEVELING    3  
 HU0419  NGVD 29 (11/26/84)    8.523  (m)           27.96   (f) ADJUSTED    1 1
 HU0419
 HU0419.Superseded values are not recommended for survey control.
 HU0419
 HU0419.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0419.See file dsdata.pdf to determine how the superseded data were derived.
 HU0419
 HU0419_MARKER: DS = TRIANGULATION STATION DISK
 HU0419_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0419_STAMPING: DEERSHEAD 1956
 HU0419_MARK LOGO: CGS
 HU0419_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0419_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0419+STABILITY: SURFACE MOTION
 HU0419_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0419+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2002
 HU0419
 HU0419  HISTORY     - Date     Condition        Report By
 HU0419  HISTORY     - 1956     MONUMENTED       CGS
 HU0419  HISTORY     - 1962     GOOD             CGS
 HU0419  HISTORY     - 1963     GOOD             CGS
 HU0419  HISTORY     - 1971     GOOD             MD1380
 HU0419  HISTORY     - 20020220 GOOD             MDSHA
 HU0419
 HU0419                          STATION DESCRIPTION
 HU0419
 HU0419'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (WFD)
 HU0419'THE STATION IS LOCATED ABOUT 1-1/2 MILES NORTH-NORTHEAST OF
 HU0419'SALISBURY, ON THE GROUNDS OF THE DEERSHEAD HOSPITAL.  IT IS 42
 HU0419'FEET NORTHEAST OF THE CENTER OF A PAVED ROAD LEADING TO THE
 HU0419'HOSPITAL AND 3 FEET SOUTHEAST OF A 4 IN X 4 IN WHITE WITNESS POST.
 HU0419'
 HU0419'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 13 AND
 HU0419'50 IN SALISBURY, GO NORTH ON U.S. HIGHWAY 13 FOR 0.8 MILE TO
 HU0419'UNION AVENUE, TURN LEFT AND GO WEST ON UNION AVENUE FOR 0.15 MILE
 HU0419'TO EMERSON AVENUE, TURN RIGHT AND GO NORTHERLY ON EMERSON AVENUE
 HU0419'FOR 0.45 MILE TO THE ENTRANCE TO THE HOSPITAL AND THE STATION.
 HU0419'
 HU0419'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTHEASTERLY
 HU0419'ON A DIRT ROAD FOR 0.15 MILE TO A CROSSROADS, TURN RIGHT AND GO
 HU0419'EAST FOR 0.05 MILE TO A RAILROAD CROSSING AND THE AZIMUTH MARK.
 HU0419'
 HU0419'THE STATION MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED
 HU0419'DEERSHEAD 1956.
 HU0419'
 HU0419'REFERENCE MARK 1 IS 92 FEET NORTHEAST OF THE CENTER OF THE PAVED
 HU0419'ROAD AND 32 FEET NORTHWEST OF THE CENTER OF THE DIRT ROAD.  THE
 HU0419'MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED DEERSHEAD NO 1
 HU0419'1956.
 HU0419'
 HU0419'REFERENCE MARK 2 IS 32 FEET SOUTHWEST OF THE CENTER OF THE PAVED
 HU0419'ROAD.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 HU0419'DEERSHEAD NO 2 1956.
 HU0419'
 HU0419'THE AZIMUTH MARK IS 26.1 FEET NORTHWEST OF A TELEPHONE POLE, 17.5
 HU0419'FEET EAST OF THE EAST RAIL OF THE PENNSYLVANIA RAILROAD TRACKS,
 HU0419'16 FEET SOUTH OF THE CENTER OF A DIRT ROAD AND 3 FEET SOUTHWEST OF
 HU0419'A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK PROJECTS 4 INCHES,
 HU0419'AND THE DISK IS STAMPED DEERSHEAD 1956.
 HU0419'
 HU0419'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 HU0419
 HU0419                          STATION RECOVERY (1962)
 HU0419
 HU0419'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU0419'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED AS
 HU0419'DESCRIBED AND FOUND TO BE IN GOOD CONDITION.
 HU0419'
 HU0419'THE AZIMUTH MARK WAS RECOVERED IN A LEANING POSITION, THE MARK
 HU0419'WAS DESTROYED AND A NEW AZIMUTH MARK WAS NOT ESTABLISHED AS A
 HU0419'BUILDING HAS BEEN BUILT ON LINE TO THE STATION AND A SUITABLE
 HU0419'PLACE WAS NOT AVAILABLE TO RE-ESTABLISH A NEW AZIMUTH MARK.
 HU0419'
 HU0419'HEIGHT OF LIGHT ABOVE STATION MARK 1 METERS.
 HU0419
 HU0419                          STATION RECOVERY (1963)
 HU0419
 HU0419'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963
 HU0419'1.2 MI N FROM SALISBURY.
 HU0419'1.05 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HU0419'AT SALISBURY, THENCE 0.05 MILE WEST ALONG A DIRT ROAD, THENCE 0.15
 HU0419'MILE SOUTH ALONG EMERSON AVENUE, AT THE JUNCTION OF A BLACK TOP
 HU0419'ROAD LEADING WEST, 106 FEET NORTH-NORTHWEST OF CENTER OF THE
 HU0419'JUNCTION, 42 FEET NORTH OF CENTER LINE OF ROAD, 17 FEET EAST-SOUTHEAST
 HU0419'OF A 12-INCH OAK TREE, 4 FEET EAST-SOUTHEAST OF A WHITE WOODEN
 HU0419'WITNESS POST, 4 FEET ABOVE LEVEL OF JUNCTION, AND SET IN THE TOP
 HU0419'OF A CONCRETE POST PROJECTING 1 INCH.
 HU0419
 HU0419                          STATION RECOVERY (1971)
 HU0419
 HU0419'RECOVERY NOTE BY CITY OF SALISBURY MARYLAND 1971 (OH)
 HU0419'DEERSHEAD 1956 GOOD BUT WHITE WITNESS POST IS REMOVED
 HU0419'
 HU0419'DEERSHEAD NO 1 1956 GOOD
 HU0419'
 HU0419'DEERSHEAD NO 2 1956 GOOD
 HU0419'
 HU0419'DEERSHEAD 1956 (AZM.) BRASS MARKER WAS PRIED OFF ITS
 HU0419'STEM.  WITNESS POST REMOVED.
 HU0419
 HU0419                          STATION RECOVERY (2002)
 HU0419
 HU0419'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0419'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0418 ***********************************************************************
 HU0418  DESIGNATION -  DEERSHEAD RM 1
 HU0418  PID         -  HU0418
 HU0418  STATE/COUNTY-  MD/WICOMICO
 HU0418  COUNTRY     -  US
 HU0418  USGS QUAD   -  DELMAR (2016)
 HU0418
 HU0418                         *CURRENT SURVEY CONTROL
 HU0418  ______________________________________________________________________
 HU0418* NAD 83(1986) POSITION- 38 23 02.76   (N) 075 35 19.66   (W)   HD_HELD1
 HU0418* NAVD 88 ORTHO HEIGHT -     7.752 (meters)       25.43  (feet) ADJUSTED
 HU0418  ______________________________________________________________________
 HU0418  GEOID HEIGHT    -        -35.798 (meters)                     GEOID18
 HU0418  DYNAMIC HEIGHT  -          7.747 (meters)       25.42  (feet) COMP
 HU0418  MODELED GRAVITY -    980,007.2   (mgal)                       NAVD 88
 HU0418
 HU0418  VERT ORDER      -  FIRST     CLASS I
 HU0418
 HU0418.The horizontal coordinates were determined by differentially corrected
 HU0418.hand held GPS observations or other comparable positioning techniques
 HU0418.and have an estimated accuracy of +/- 3 meters.
 HU0418
 HU0418.The orthometric height was determined by differential leveling and
 HU0418.adjusted by the NATIONAL GEODETIC SURVEY
 HU0418.in June 1991.
 HU0418
 HU0418.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0418.GEOID18 height accuracy estimate available here.
 HU0418
 HU0418.Click photographs - Photos may exist for this station.
 HU0418
 HU0418.The dynamic height is computed by dividing the NAVD 88
 HU0418.geopotential number by the normal gravity value computed on the
 HU0418.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0418.degrees latitude (g = 980.6199 gals.).
 HU0418
 HU0418.The modeled gravity was interpolated from observed gravity values.
 HU0418
 HU0418;                    North         East    Units  Estimated Accuracy
 HU0418;SPC MD       -    80,591.1     523,293.8     MT  (+/- 3 meters HH1 GPS) 
 HU0418
 HU0418_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4857648597(NAD 83)
 HU0418
 HU0418                          SUPERSEDED SURVEY CONTROL
 HU0418
 HU0418  NGVD 29 (11/26/84)    8.005  (m)           26.26   (f) ADJUSTED    1 1
 HU0418
 HU0418.Superseded values are not recommended for survey control.
 HU0418
 HU0418.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0418.See file dsdata.pdf to determine how the superseded data were derived.
 HU0418
 HU0418_MARKER: DR = REFERENCE MARK DISK
 HU0418_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0418_STAMPING: DEERSHEAD NO 1 1956
 HU0418_MARK LOGO: CGS
 HU0418_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0418+STABILITY: SURFACE MOTION
 HU0418
 HU0418  HISTORY     - Date     Condition        Report By
 HU0418  HISTORY     - 1956     MONUMENTED       CGS
 HU0418  HISTORY     - 1963     GOOD             CGS
 HU0418
 HU0418                          STATION DESCRIPTION
 HU0418
 HU0418'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0418'1.2 MI N FROM SALISBURY.
 HU0418'1.05 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HU0418'AT SALISBURY, THENCE 0.05 MILE WEST ALONG A DIRT ROAD, THENCE 0.15
 HU0418'MILE SOUTH ALONG EMERSON AVENUE, AT THE JUNCTION OF A BLACK TOP
 HU0418'ROAD LEADING WEST, 100 FEET NORTH OF CENTER OF THE JUNCTION, 24.5
 HU0418'FEET NORTHWEST OF CENTER LINE OF THE AVENUE, 75.2 FEET EAST-NORTHEAST
 HU0418'OF TRIANGULATION STATION DEERSHEAD DESCRIBED, 1 FOOT SOUTH OF A
 HU0418'STEEL WITNESS POST, 2 FEET ABOVE LEVEL OF THE AVENUE, AND SET IN
 HU0418'THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0420 ***********************************************************************
 HU0420  DESIGNATION -  DEERSHEAD RM 2
 HU0420  PID         -  HU0420
 HU0420  STATE/COUNTY-  MD/WICOMICO
 HU0420  COUNTRY     -  US
 HU0420  USGS QUAD   -  DELMAR (2016)
 HU0420
 HU0420                         *CURRENT SURVEY CONTROL
 HU0420  ______________________________________________________________________
 HU0420* NAD 83(1986) POSITION- 38 23 01.98   (N) 075 35 21.34   (W)   HD_HELD1
 HU0420* NAVD 88 ORTHO HEIGHT -     8.250 (meters)       27.07  (feet) ADJUSTED
 HU0420  ______________________________________________________________________
 HU0420  GEOID HEIGHT    -        -35.798 (meters)                     GEOID18
 HU0420  DYNAMIC HEIGHT  -          8.245 (meters)       27.05  (feet) COMP
 HU0420  MODELED GRAVITY -    980,007.2   (mgal)                       NAVD 88
 HU0420
 HU0420  VERT ORDER      -  FIRST     CLASS I
 HU0420
 HU0420.The horizontal coordinates were determined by differentially corrected
 HU0420.hand held GPS observations or other comparable positioning techniques
 HU0420.and have an estimated accuracy of +/- 3 meters.
 HU0420
 HU0420.The orthometric height was determined by differential leveling and
 HU0420.adjusted by the NATIONAL GEODETIC SURVEY
 HU0420.in June 1991.
 HU0420
 HU0420.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0420.GEOID18 height accuracy estimate available here.
 HU0420
 HU0420.Click photographs - Photos may exist for this station.
 HU0420
 HU0420.The dynamic height is computed by dividing the NAVD 88
 HU0420.geopotential number by the normal gravity value computed on the
 HU0420.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0420.degrees latitude (g = 980.6199 gals.).
 HU0420
 HU0420.The modeled gravity was interpolated from observed gravity values.
 HU0420
 HU0420;                    North         East    Units  Estimated Accuracy
 HU0420;SPC MD       -    80,566.5     523,253.4     MT  (+/- 3 meters HH1 GPS) 
 HU0420
 HU0420_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4853548573(NAD 83)
 HU0420
 HU0420                          SUPERSEDED SURVEY CONTROL
 HU0420
 HU0420  NGVD 29 (11/26/84)    8.504  (m)           27.90   (f) ADJUSTED    1 1
 HU0420
 HU0420.Superseded values are not recommended for survey control.
 HU0420
 HU0420.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0420.See file dsdata.pdf to determine how the superseded data were derived.
 HU0420
 HU0420_MARKER: DR = REFERENCE MARK DISK
 HU0420_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0420_STAMPING: DEERSHEAD NO 2 1956
 HU0420_MARK LOGO: CGS
 HU0420_PROJECTION: PROJECTING 3 CENTIMETERS
 HU0420_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0420+STABILITY: SURFACE MOTION
 HU0420
 HU0420  HISTORY     - Date     Condition        Report By
 HU0420  HISTORY     - 1956     MONUMENTED       CGS
 HU0420  HISTORY     - 1963     GOOD             CGS
 HU0420
 HU0420                          STATION DESCRIPTION
 HU0420
 HU0420'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0420'1.2 MI N FROM SALISBURY.
 HU0420'1.05 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HU0420'AT SALISBURY, THENCE 0.05 MILE WEST ALONG A DIRT ROAD, THENCE
 HU0420'0.15 MILE SOUTH ALONG EMERSON AVENUE, AT THE JUNCTION OF A BLACK
 HU0420'TOP ROAD LEADING WEST, 138 FEET WEST-SOUTHWEST OF CENTER OF THE
 HU0420'JUNCTION, 83.1 FEET SOUTHWEST AND ACROSS ROAD FROM TRIANGULATION
 HU0420'STATION DEERSHEAD DESCRIBED, 31.5 FEET SOUTHWEST OF CENTER LINE
 HU0420'OF ROAD, 3 1/2 FEET ABOVE LEVEL OF ROAD, AND SET IN THE TOP OF A
 HU0420'CONCRETE POST PROJECTING 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5968 ***********************************************************************
 HV5968  DESIGNATION -  DEISSLER
 HV5968  PID         -  HV5968
 HV5968  STATE/COUNTY-  MD/DORCHESTER
 HV5968  COUNTRY     -  US
 HV5968  USGS QUAD   -  CHURCH CREEK (2016)
 HV5968
 HV5968                         *CURRENT SURVEY CONTROL
 HV5968  ______________________________________________________________________
 HV5968* NAD 83(1991) POSITION- 38 35 36.68696(N) 076 07 50.40185(W)   ADJUSTED
 HV5968* NAVD 88 ORTHO HEIGHT -     7.4   (meters)       24.    (feet) VERTCON3
 HV5968  ______________________________________________________________________
 HV5968  GEOID HEIGHT    -        -34.891 (meters)                     GEOID18
 HV5968  LAPLACE CORR    -         -3.73  (seconds)                    DEFLEC18
 HV5968  HORZ ORDER      -  SECOND
 HV5968
 HV5968.The horizontal coordinates were established by classical geodetic methods
 HV5968.and adjusted by the National Geodetic Survey in January 1992.
 HV5968
 HV5968.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV5968.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV5968
 HV5968.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5968.GEOID18 height accuracy estimate available here.
 HV5968
 HV5968.Click photographs - Photos may exist for this station.
 HV5968
 HV5968.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5968
 HV5968. The following values were computed from the NAD 83(1991) position.
 HV5968
 HV5968;                    North         East     Units Scale Factor Converg.
 HV5968;SPC MD       -   103,245.396   475,732.118   MT  0.99996192   +0 32 44.2
 HV5968;SPC MD       -   338,730.94  1,560,797.79   sFT  0.99996192   +0 32 44.2
 HV5968;UTM  18      - 4,272,277.186   401,534.410   MT  0.99971939   -0 42 19.3
 HV5968
 HV5968!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5968!SPC MD       -   1.00000432  x   0.99996192  =   0.99996624
 HV5968!UTM  18      -   1.00000432  x   0.99971939  =   0.99972371
 HV5968
 HV5968:                Primary Azimuth Mark                     Grid Az
 HV5968:SPC MD       -  SLAGLE 3                                 093 31 47.5
 HV5968:UTM  18      -  SLAGLE 3                                 094 46 51.0
 HV5968
 HV5968_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0153472277(NAD 83)
 HV5968
 HV5968|---------------------------------------------------------------------|
 HV5968| PID    Reference Object                     Distance      Geod. Az  |
 HV5968|                                                           dddmmss.s |
 HV5968| HV5884 HAMBROOK BAR BEACON                 APPROX. 4.3 KM 0874331.3 |
 HV5968| HV5886 SLAGLE 3                            APPROX. 3.4 KM 0940431.7 |
 HV5968| CX2685 DEISSLER RM 1                        22.601 METERS 13422     |
 HV5968| HV5970 RAYDIST CAMBRIDGE OFFSET            236.969 METERS 24026     |
 HV5968| HV5972 RAYDIST CAMBRIDGE OFFSET RM 2       258.804 METERS 24432     |
 HV5968| CX2686 DEISSLER RM 2                        15.773 METERS 35854     |
 HV5968|---------------------------------------------------------------------|
 HV5968
 HV5968                          SUPERSEDED SURVEY CONTROL
 HV5968
 HV5968  NAD 83(1986)-  38 35 36.68392(N)    076 07 50.41826(W) AD(       ) 2
 HV5968  NAD 27      -  38 35 36.25291(N)    076 07 51.62267(W) AD(       ) 2
 HV5968  NGVD 29 (07/19/86)    7.6    (m)           25.     (f) VERT ANG       
 HV5968
 HV5968.Superseded values are not recommended for survey control.
 HV5968
 HV5968.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5968.See file dsdata.pdf to determine how the superseded data were derived.
 HV5968
 HV5968_MARKER: DH = HORIZONTAL CONTROL DISK
 HV5968_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5968_STAMPING: DEISSLER 1973
 HV5968_MARK LOGO: NGS
 HV5968_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5968+STABILITY: SURFACE MOTION
 HV5968
 HV5968  HISTORY     - Date     Condition        Report By
 HV5968  HISTORY     - 1973     MONUMENTED       NGS
 HV5968  HISTORY     - 1976     GOOD             NGS
 HV5968
 HV5968                          STATION DESCRIPTION
 HV5968
 HV5968'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 HV5968'THE STATION IS LOCATED ON THE SOUTH SIDE OF THE CHOPTANK RIVER
 HV5968'ABOUT 4 MILES NORTHWEST OF CAMBRIDGE, 3 MILES NORTHEAST OF LLOYDS
 HV5968'AND ON PROPERTY OWNED BY MRS. DEISSLER.
 HV5968'
 HV5968'TO REACH THE STATION FROM THE SOUTH END OF THE BRIDGE OVER THE
 HV5968'CHOPTANK RIVER IN CAMBRIDGE, GO SOUTH ON U.S. HIGHWAY 50 FOR 0.6
 HV5968'MILE TO THE JUNCTION OF STATE HIGHWAY 343, TURN RIGHT AND GO WEST
 HV5968'ON HIGHWAY 343 FOR 3.1 MILES TO A FORK, CONTINUE ON THE RIGHT FORK
 HV5968'AND GO NORTHWEST ON THE PAVED ROAD FOR 1.45 MILES TO A SIDE ROAD
 HV5968'RIGHT, TURN RIGHT BETWEEN TWO STONE SHEEP AND GO NORTHEAST ON THE
 HV5968'PAVED ROAD FOR 0.65 MILE TO A CROSSROAD, TURN LEFT AND GO
 HV5968'NORTHWEST ON THE PAVED ROAD FOR 0.25 MILE TO THE STATION ON THE
 HV5968'RIGHT, JUST AFTER CROSSING OVER A SMALL WOOD BRIDGE.
 HV5968'
 HV5968'THE STATION MARK IS A STANDARD DISK STAMPED DEISSLER 1973, SET IN
 HV5968'TOP OF A 10-INCH CONCRETE CYLINDER THAT IS FLUSH WITH THE GROUND
 HV5968'SURFACE.  IT IS 128.0 FEET EAST OF A WATER TANK, 119.0 FEET
 HV5968'NORTHWEST OF THE NORTHWEST EDGE OF THE WOOD BRIDGE, ABOUT 300 FEET
 HV5968'EAST OF MRS DEISSLERS HOUSE, 72.0 FEET NORTH-NORTHEAST OF THE
 HV5968'APPROXIMATE CENTER OF THE PAVED ROAD AND 50.0 FEET
 HV5968'SOUTH-SOUTHWEST OF THE SHORE LINE.  THE SUBSURFACE DISK IS SET IN
 HV5968'CONCRETE ABOUT 40 INCHES BELOW THE GROUND SURFACE.
 HV5968'
 HV5968'REFERENCE MARK 1 IS A STANDARD DISK STAMPED DEISSLER NO 1 1973,
 HV5968'SET IN TOP OF A 10-INCH CONCRETE CYLINDER THAT IS FLUSH WITH THE
 HV5968'GROUND SURFACE.  IT IS 2.0 FEET NORTHWEST OF A WOOD FENCE, 75.0
 HV5968'FEET NORTH OF THE APPROXIMATE CENTER OF THE BRIDGE AT THE WEST END
 HV5968'AND ABOUT 2 FEET LOWER THAN THE STATION MARK.
 HV5968'
 HV5968'REFERENCE MARK 2 IS A STANDARD DISK STAMPED DEISSLER NO 2 1973,
 HV5968'SET IN TOP OF A 10-INCH CONCRETE CYLINDER THAT IS FLUSH WITH THE
 HV5968'GROUND SURFACE.  IT IS 105.0 FEET NORTH-NORTHEAST OF THE
 HV5968'APPROXIMATE CENTER OF THE PAVED ROAD, 100.0 FEET NORTHEAST OF THE
 HV5968'WATER TANK, 20.0 FEET SOUTH-SOUTHWEST OF THE SHORE LINE AND ABOUT
 HV5968'4 FEET LOWER THAN THE STATION MARK.
 HV5968'
 HV5968'TRIANGULATION STATION RAYDIST CAMBRIDGE OFFSET 1973 CAN BE USED
 HV5968'FOR AN AZIMUTH MARK.
 HV5968'
 HV5968'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 HV5968
 HV5968                          STATION RECOVERY (1976)
 HV5968
 HV5968'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HV5968'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HV5968'CONDITION AS PREVIOUSLY DESCRIBED.  THE REFERENCE MARKS WERE
 HV5968'INTERSECTED OFF OF SLAGLE 3.  RAYDIST CAMBRIDGE OFFSET IS
 HV5968'OBSTRUCTED BY TREES AND SHRUBS WHICH WAS PLANTED WHEN A NEW HOUSE
 HV5968'WAS BUILT IN THE AREA.  THE NORTHEAST CORNER OF THE HOUSE WAS
 HV5968'INTERSECTED AND MEASURED AT THIS DATE.  NO OTHER PERMANENT OBJECTS
 HV5968'WERE CHANGED IN THE AREA.  THE FORMER TO REACH IS ADEQUATE.
 HV5968'
 HV5968'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 4 MILES
 HV5968'NORTHWEST OF CAMBRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5777 ***********************************************************************
 JV5777  DESIGNATION -  DEL
 JV5777  PID         -  JV5777
 JV5777  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5777  COUNTRY     -  US
 JV5777  USGS QUAD   -  ROUND BAY (2016)
 JV5777
 JV5777                         *CURRENT SURVEY CONTROL
 JV5777  ______________________________________________________________________
 JV5777* NAD 83(1991) POSITION- 39 04 52.28094(N) 076 31 03.09375(W)   ADJUSTED
 JV5777* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV5777  ______________________________________________________________________
 JV5777  GEOID HEIGHT    -        -33.145 (meters)                     GEOID18
 JV5777  LAPLACE CORR    -         -3.72  (seconds)                    DEFLEC18
 JV5777  HORZ ORDER      -  SECOND
 JV5777
 JV5777.The horizontal coordinates were established by classical geodetic methods
 JV5777.and adjusted by the National Geodetic Survey in January 1992.
 JV5777
 JV5777.The orthometric height was scaled from a topographic map.
 JV5777
 JV5777.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5777.GEOID18 height accuracy estimate available here.
 JV5777
 JV5777.Click photographs - Photos may exist for this station.
 JV5777
 JV5777.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5777
 JV5777. The following values were computed from the NAD 83(1991) position.
 JV5777
 JV5777;                    North         East     Units Scale Factor Converg.
 JV5777;SPC MD       -   157,129.424   441,745.157   MT  0.99995625   +0 18 10.1
 JV5777;SPC MD       -   515,515.45  1,449,292.24   sFT  0.99995625   +0 18 10.1
 JV5777;UTM  18      - 4,326,882.259   368,741.881   MT  0.99981214   -0 57 24.5
 JV5777
 JV5777!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5777!SPC MD       -   1.00000398  x   0.99995625  =   0.99996023
 JV5777!UTM  18      -   1.00000398  x   0.99981214  =   0.99981612
 JV5777
 JV5777:                Primary Azimuth Mark                     Grid Az
 JV5777:SPC MD       -  LINSTID 2                                071 54 56.4
 JV5777:UTM  18      -  LINSTID 2                                073 10 31.0
 JV5777
 JV5777_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6874126882(NAD 83)
 JV5777
 JV5777|---------------------------------------------------------------------|
 JV5777| PID    Reference Object                     Distance      Geod. Az  |
 JV5777|                                                           dddmmss.s |
 JV5777| JV5245 LINSTID 2                           APPROX. 2.9 KM 0721306.5 |
 JV5777| JV5240 GIBSON ISLAND WHITE BRICK CHIM      APPROX. 7.2 KM 1013137.1 |
 JV5777| CA9333 DEL RM 3                             27.040 METERS 13810     |
 JV5777| JV5790 TWO STORY PAGODA                    APPROX. 1.4 KM 1394814.3 |
 JV5777| CA9331 DEL RM 1                             27.690 METERS 20256     |
 JV5777| CA9332 DEL RM 2                             21.940 METERS 26719     |
 JV5777|---------------------------------------------------------------------|
 JV5777
 JV5777                          SUPERSEDED SURVEY CONTROL
 JV5777
 JV5777  NAD 83(1986)-  39 04 52.27707(N)    076 31 03.10407(W) AD(       ) 2
 JV5777  NAD 27      -  39 04 51.88100(N)    076 31 04.24300(W) AD(       ) 2
 JV5777
 JV5777.Superseded values are not recommended for survey control.
 JV5777
 JV5777.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5777.See file dsdata.pdf to determine how the superseded data were derived.
 JV5777
 JV5777_MARKER: DS = TRIANGULATION STATION DISK
 JV5777_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5777_STAMPING: DEL 1933
 JV5777_MARK LOGO: CGS
 JV5777
 JV5777  HISTORY     - Date     Condition        Report By
 JV5777  HISTORY     - 1933     MONUMENTED       CGS
 JV5777  HISTORY     - 1951     GOOD             CGS
 JV5777  HISTORY     - 1961     GOOD             CGS
 JV5777  HISTORY     - 1988     GOOD             MDDNR
 JV5777
 JV5777                          STATION DESCRIPTION
 JV5777
 JV5777'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5777'STATION IS ON THE S SHORE OF THE UPPER MAGOTHY RIVER, ABOUT
 JV5777'1/2 MILE SE OF THE MOUTH OF CATTAIL CREEK, AND 1/2 MILE NE OF
 JV5777'THE MOUTH OF CYPRESS CREEK, ON THE NE CORNER OF DEEP POINT
 JV5777'(ARUNDEL BEACH POINT), ON THE C.F. HENDERSON PROPERTY, IN A
 JV5777'CLEARED AREA, ON THE TOP OF A 10-FOOT BLUFF, 27.74 METERS (91
 JV5777'FEET) FROM THE E EDGE OF THE BLUFF AND HIGH-WATER MARK, 28.95
 JV5777'METERS (95 FEET) FROM THE FOOT OF AN 8-FOOT BANK ON THE N AND
 JV5777'HIGH-WATER MARK.
 JV5777'
 JV5777'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5777'CONCRETE.
 JV5777'
 JV5777'STATION AND REFERENCE MARKS ARE SET FLUSH WITH THE SURFACE
 JV5777'OF THE GROUND.
 JV5777'
 JV5777'DISTANCE AND AZIMUTH TO OTHER POINT OF REFERENCE IS AS
 JV5777'FOLLOWS--LONE PINE TREE, 12.1 METERS (40 FEET), SE.
 JV5777'
 JV5777'TO APPROACH THE STATION BY LAND, TURN E FROM THE ANNAPOLIS
 JV5777'BOULEVARD AT ROAD MARKER 127 NEAR GORKA BROTHERS STORE, AND
 JV5777'FOLLOW THE MAIN ROAD (ARUNDEL BEACH ROAD) 1.7 MILES TO
 JV5777'C.F. HENDERSON PROPERTY.  THE STATION IS E FROM THE HOUSE.
 JV5777'
 JV5777'IT WAS NECESSARY TO BUILD AN 18-METER TOWER TO OBSERVE LIST,
 JV5777'A 12-METER TOWER TO OBSERVE LINSTID 2.
 JV5777'
 JV5777'HEIGHT OF TARGET ABOVE STATION MARK 21 METERS.
 JV5777
 JV5777                          STATION RECOVERY (1951)
 JV5777
 JV5777'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951 (IWS)
 JV5777'STATION WAS RECOVERED AS DESCRIBED WITH THE FOLLOWING EXCEPTIONS--
 JV5777'
 JV5777'TO REACH THE STATION FROM THE BRIDGE OVER THE SEVERN RIVER
 JV5777'JUST N OF ANNAPOLIS, GO N ON THE MAIN HIGHWAY TOWARD BALTIMORE
 JV5777'FOR 7.1 MILES TO A CROSSROAD, TURN RIGHT AND GO ABOUT 100 YARDS
 JV5777'TO GOSKA BROS. STORE, TURN RIGHT AGAIN BESIDE THE STORE AND
 JV5777'FOLLOW THE MAIN ROAD FOR 1.7 MILES TO THE C.F. HENDERSON
 JV5777'PROPERTY.  THE STATION SITE IS THE POINT OF LAND WHICH IS
 JV5777'ABOUT 300 YARDS NE OF THE ENTRANCE TO THE PROPERTY.
 JV5777'
 JV5777'REFERENCE MARK 2 WAS DESTROYED BECAUSE OF FUTURE CONSTRUCTION.
 JV5777'
 JV5777'REFERENCE MARK 3 WAS SET FLUSH IN A DRILL HOLE IN A CEMENT
 JV5777'FILL AT THE BASE OF A LARGE SPRAWLING TREE.  THE MARK IS ABOUT
 JV5777'10 FEET FROM THE EDGE OF THE BANK.  THE BANK IS PROTECTED AT
 JV5777'THIS POINT BY A THICK CONCRETE RETAINING WALL.  THE DISK IS
 JV5777'STAMPED DEL RM 3 1933.
 JV5777
 JV5777                          STATION RECOVERY (1961)
 JV5777
 JV5777'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5777'STATION RECOVERED IN GOOD CONDITION.  RM 3 ALSO WAS RECOVERED.  RM
 JV5777'1 HAS BEEN COVERED BY ICE AND SNOW AND WAS NOT SEARCHED FOR.  RM
 JV5777'1 HAS BEEN SEEN BY THE OWNER OF THE PROPERTY AND IS BELIEVED TO
 JV5777'BE IN GOOD CONDITION.
 JV5777'
 JV5777'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 2 AND ROUTE
 JV5777'648 GO E. ON ROUTE 648.  TAKE THE FIRST ROAD TO THE RIGHT FROM
 JV5777'ROUTE 648.  FOLLOW THIS ROAD, WHICH PASSES OAKLEIGH FOREST AND A
 JV5777'SCHOOL ON THE S. SIDE OF THE ROAD, FOR 1.7 MILES TO THE WATER AND
 JV5777'A DRIVEWAY TO THE LEFT WHICH LEADS TO A CIRCULAR DRIVEWAY ON
 JV5777'THE PROPERTY MARKED RILEY.  THE STATION AND REFERENCE MARKS ARE
 JV5777'TO THE E. OF THE HOUSE AND CIRCULAR DRIVE.
 JV5777
 JV5777                          STATION RECOVERY (1988)
 JV5777
 JV5777'RECOVERY NOTE BY MD DEPT OF NAT RES 1988 (LW)
 JV5777'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5840 ***********************************************************************
 JV5840  DESIGNATION -  DEL VALLE
 JV5840  PID         -  JV5840
 JV5840  STATE/COUNTY-  MD/HOWARD
 JV5840  COUNTRY     -  US
 JV5840  USGS QUAD   -  SAVAGE (2016)
 JV5840
 JV5840                         *CURRENT SURVEY CONTROL
 JV5840  ______________________________________________________________________
 JV5840* NAD 83(1991) POSITION- 39 11 46.52157(N) 076 45 51.09990(W)   ADJUSTED
 JV5840* NAVD 88 ORTHO HEIGHT -    82.    (meters)      269.    (feet) SCALED
 JV5840  ______________________________________________________________________
 JV5840  GEOID HEIGHT    -        -32.396 (meters)                     GEOID18
 JV5840  LAPLACE CORR    -         -5.65  (seconds)                    DEFLEC18
 JV5840  HORZ ORDER      -  THIRD
 JV5840
 JV5840.The horizontal coordinates were established by classical geodetic methods
 JV5840.and adjusted by the National Geodetic Survey in January 1992.
 JV5840
 JV5840.The orthometric height was scaled from a topographic map.
 JV5840
 JV5840.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5840.GEOID18 height accuracy estimate available here.
 JV5840
 JV5840.Click photographs - Photos may exist for this station.
 JV5840
 JV5840.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5840
 JV5840. The following values were computed from the NAD 83(1991) position.
 JV5840
 JV5840;                    North         East     Units Scale Factor Converg.
 JV5840;SPC MD       -   169,819.419   420,369.713   MT  0.99996545   +0 08 52.8
 JV5840;SPC MD       -   557,149.21  1,379,162.97   sFT  0.99996545   +0 08 52.8
 JV5840;UTM  18      - 4,340,038.225   347,653.327   MT  0.99988578   -1 06 54.5
 JV5840
 JV5840!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5840!SPC MD       -   0.99999225  x   0.99996545  =   0.99995770
 JV5840!UTM  18      -   0.99999225  x   0.99988578  =   0.99987803
 JV5840
 JV5840:                Primary Azimuth Mark                     Grid Az
 JV5840:SPC MD       -  NASH                                     050 31 41.4
 JV5840:UTM  18      -  NASH                                     051 47 28.7
 JV5840
 JV5840_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4765340038(NAD 83)
 JV5840
 JV5840|---------------------------------------------------------------------|
 JV5840| PID    Reference Object                     Distance      Geod. Az  |
 JV5840|                                                           dddmmss.s |
 JV5840| CA9334 DEL VALLE RM 1                       18.749 METERS 00325     |
 JV5840| JV5832 NASH                                APPROX. 2.3 KM 0504034.2 |
 JV5840| JV5853 WATERLOO STATE POLICE RAD MAST      APPROX. 3.1 KM 2091717.8 |
 JV5840| CA9335 DEL VALLE RM 2                       24.747 METERS 22711     |
 JV5840| JV5837 BALTIMORE GAS HOWARD CO MAST        APPROX. 4.1 KM 3391555.2 |
 JV5840|---------------------------------------------------------------------|
 JV5840
 JV5840                          SUPERSEDED SURVEY CONTROL
 JV5840
 JV5840  NAD 83(1986)-  39 11 46.51915(N)    076 45 51.10941(W) AD(       ) 3
 JV5840  NAD 27      -  39 11 46.13510(N)    076 45 52.21120(W) AD(       ) 3
 JV5840
 JV5840.Superseded values are not recommended for survey control.
 JV5840
 JV5840.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5840.See file dsdata.pdf to determine how the superseded data were derived.
 JV5840
 JV5840_MARKER: DS = TRIANGULATION STATION DISK
 JV5840_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5840_STAMPING: DEL VALLE 1957
 JV5840_MARK LOGO: CGS
 JV5840_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5840+STABILITY: SURFACE MOTION
 JV5840
 JV5840  HISTORY     - Date     Condition        Report By
 JV5840  HISTORY     - 1957     MONUMENTED       CGS
 JV5840
 JV5840                          STATION DESCRIPTION
 JV5840
 JV5840'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5840'STATION IS LOCATED ABOUT 2-1/4 MILES WEST SOUTHWEST OF ELKRIDGE,
 JV5840'1-1/2 MILES NORTHWEST OF DORSEY AND 3/4 OF A MILE NORTH OF THE
 JV5840'JUNCTION OF U.S. HIGHWAY 1 AND STATE HIGHWAY 176 ON THE PROPERTY
 JV5840'OF GENERAL P.A. DEL VALLE, U.S.M.C., RETIRED.  STATION IS ABOUT
 JV5840'75 YARDS WEST OF HOUSE, 4 FEET NORTHWEST OF WITNESS POST AND
 JV5840'ALONG THE EAST EDGE OF A NORTH-SOUTH CLEARED LANE.  THE MARK
 JV5840'PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED DEL VALLE
 JV5840'1957.
 JV5840'
 JV5840'REFERENCE MARK NO. 1 IS ALONG THE EAST EDGE OF NORTH-SOUTH
 JV5840'CLEARED LANE.  THE MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS
 JV5840'STAMPED DEL VALLE NO 1 1957.
 JV5840'
 JV5840'REFERENCE MARK NO. 2 IS IN THE SOUTH EDGE OF EAST-WEST CLEARED
 JV5840'LANE.  THE MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED
 JV5840'DEL VALLE NO 2 1957.
 JV5840'
 JV5840'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 1 AND STATE
 JV5840'HIGHWAY 175, ABOUT 5 MILES NORTHEAST OF LAUREL, GO NORTHEAST ON
 JV5840'U.S. HIGHWAY 1 FOR 1.75 MILES TO THE JUNCTION OF STATE HIGHWAY
 JV5840'176.  TURN LEFT ON CRUSHED STONE DRIVEWAY, BETWEEN CEMETERY AND
 JV5840'HOUSE, AND GO NORTHERLY FOR 0.55 MILE TO A FORKS.  TURN RIGHT AND
 JV5840'GO ABOUT 50 YARDS TO A T INTERSECTION.  TURN LEFT AND GO 0.05
 JV5840'MILE TO A FORKS. TAKE RIGHT FORK BETWEEN CORN CRIB AND GARAGE AND
 JV5840'GO 0.1 MILE TO A GRAVEL PIT ON THE LEFT AND STATION JUST SOUTH
 JV5840'OF GRAVEL PIT AS DESCRIBED.  A TRUCK CAN BE DRIVEN TO STATION
 JV5840'BY PASSING AROUND TO THE WEST OF THE GRAVEL PIT AND
 JV5840'FOLLOWING CLEARED LANE EAST TO STATION.
 JV5840'
 JV5840'NO AZIMUTH MARK WAS SET DUE TO STATION LOCATED IN WOODS.
 JV5840'
 JV5840'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6042 ***********************************************************************
 HV6042  DESIGNATION -  DELAHAY
 HV6042  PID         -  HV6042
 HV6042  STATE/COUNTY-  MD/TALBOT
 HV6042  COUNTRY     -  US
 HV6042  USGS QUAD   -  OXFORD (2016)
 HV6042
 HV6042                         *CURRENT SURVEY CONTROL
 HV6042  ______________________________________________________________________
 HV6042* NAD 83(1991) POSITION- 38 39 58.33586(N) 076 08 36.82731(W)   ADJUSTED
 HV6042* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6042  ______________________________________________________________________
 HV6042  GEOID HEIGHT    -        -34.736 (meters)                     GEOID18
 HV6042  LAPLACE CORR    -         -3.74  (seconds)                    DEFLEC18
 HV6042  HORZ ORDER      -  THIRD
 HV6042
 HV6042.The horizontal coordinates were established by classical geodetic methods
 HV6042.and adjusted by the National Geodetic Survey in January 1992.
 HV6042
 HV6042.The orthometric height was scaled from a topographic map.
 HV6042
 HV6042.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6042.GEOID18 height accuracy estimate available here.
 HV6042
 HV6042.Click photographs - Photos may exist for this station.
 HV6042
 HV6042.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6042
 HV6042. The following values were computed from the NAD 83(1991) position.
 HV6042
 HV6042;                    North         East     Units Scale Factor Converg.
 HV6042;SPC MD       -   111,302.212   474,533.029   MT  0.99995650   +0 32 15.1
 HV6042;SPC MD       -   365,164.01  1,556,863.78   sFT  0.99995650   +0 32 15.1
 HV6042;UTM  18      - 4,280,356.343   400,511.823   MT  0.99972189   -0 42 52.3
 HV6042
 HV6042!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6042!SPC MD       -   1.00000533  x   0.99995650  =   0.99996183
 HV6042!UTM  18      -   1.00000533  x   0.99972189  =   0.99972722
 HV6042
 HV6042:                Primary Azimuth Mark                     Grid Az
 HV6042:SPC MD       -  KENT                                     075 24 20.4
 HV6042:UTM  18      -  KENT                                     076 39 27.8
 HV6042
 HV6042_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0051180356(NAD 83)
 HV6042
 HV6042|---------------------------------------------------------------------|
 HV6042| PID    Reference Object                     Distance      Geod. Az  |
 HV6042|                                                           dddmmss.s |
 HV6042| HV5993 KENT                                APPROX. 0.5 KM 0755635.5 |
 HV6042| HV5991 JAY                                 451.420 METERS 1454134.2 |
 HV6042|---------------------------------------------------------------------|
 HV6042
 HV6042                          SUPERSEDED SURVEY CONTROL
 HV6042
 HV6042  NAD 83(1986)-  38 39 58.33248(N)    076 08 36.84336(W) AD(       ) 3
 HV6042  NAD 27      -  38 39 57.90000(N)    076 08 38.06000(W) AD(       ) 3
 HV6042  USSD        -  38 39 58.29300(N)    076 08 37.86900(W) AD(       ) 3
 HV6042
 HV6042.Superseded values are not recommended for survey control.
 HV6042
 HV6042.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6042.See file dsdata.pdf to determine how the superseded data were derived.
 HV6042
 HV6042_MARKER: H = DRILL HOLE
 HV6042_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6042_PROJECTION: PROJECTING 10 CENTIMETERS
 HV6042_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6042
 HV6042  HISTORY     - Date     Condition        Report By
 HV6042  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6042  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6042
 HV6042                          STATION DESCRIPTION
 HV6042
 HV6042'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6042'ON NORTHERN SHORE OF ISLAND CREEK, ABOUT 1 MILE ENE OF WHERE THE
 HV6042'CREEK ENTERS THE CHOPTANK RIVER, IN CULTIVATED LAND ABOUT 5 FEET
 HV6042'ABOVE HIGH WATER, 2 YARDS NW OF EDGE OF BANK, 100 YARDS E OF EDGE
 HV6042'OF BANK OF INLET, 27 YARDS NE OF POINT OF BANK, AND 75 YARDS SW OF
 HV6042'FARM BUILDINGS.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE
 HV6042'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6042'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6042'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6042'TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN
 HV6042'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV6042'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV6042'ARE AS FOLLOWS--NEAR PEAK OF LARGE MODERN HOUSE, 1 MILE, S 17 DEG
 HV6042'59 MIN W.  NEAR PEAK OF LARGE BARN, 1-1/4 MILES, S 33 DEG 34 MIN
 HV6042'W.  NAIL IN BLAZE IN 10-INCH APPLE TREE, 21.08 METERS (69.2 FEET),
 HV6042'S 61 DEG 28 MIN W.  NAIL IN BLAZE IN 10-INCH APPLE TREE, 21.36
 HV6042'METERS (70.1 FEET), S 79 DEG 50 MIN W. NAIL IN BLAZE IN 7-INCH
 HV6042'APPLE TREE, 10.12 METERS (33.2 FEET), N 14 DEG 11 MIN W.  SPINDLE
 HV6042'ON BARN CUPOLA, 250 YARDS, N 29 DEG 5 MIN E.  LEFT CORNER OF
 HV6042'HOUSE, 7/8 MILE, S 88 DEG 47 MIN E.  NEAR PEAK OF BARN, 3/4 MILE,
 HV6042'S 78 DEG 46 MIN E.
 HV6042
 HV6042                          STATION RECOVERY (1940)
 HV6042
 HV6042'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6042'STATION VISITED BUT NOT RECOVERED.  POINT HAS ERODED CONSIDERABLY,
 HV6042'AND OWNER STATES THAT MONUMENT FELL OVER BANK AND WAS WASHED AWAY.
 HV6042'
 HV6042'RECOMMENDED THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6208 ***********************************************************************
 HV6208  DESIGNATION -  DELL
 HV6208  PID         -  HV6208
 HV6208  STATE/COUNTY-  MD/QUEEN ANNES
 HV6208  COUNTRY     -  US
 HV6208  USGS QUAD   -  KENT ISLAND (2016)
 HV6208
 HV6208                         *CURRENT SURVEY CONTROL
 HV6208  ______________________________________________________________________
 HV6208* NAD 83(1991) POSITION- 38 55 28.11104(N) 076 18 30.51173(W)   ADJUSTED
 HV6208* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6208  ______________________________________________________________________
 HV6208  GEOID HEIGHT    -        -33.746 (meters)                     GEOID18
 HV6208  LAPLACE CORR    -         -4.03  (seconds)                    DEFLEC18
 HV6208  HORZ ORDER      -  THIRD
 HV6208
 HV6208.The horizontal coordinates were established by classical geodetic methods
 HV6208.and adjusted by the National Geodetic Survey in January 1992.
 HV6208
 HV6208.The orthometric height was scaled from a topographic map.
 HV6208
 HV6208.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6208.GEOID18 height accuracy estimate available here.
 HV6208
 HV6208.Click photographs - Photos may exist for this station.
 HV6208
 HV6208.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6208
 HV6208. The following values were computed from the NAD 83(1991) position.
 HV6208
 HV6208;                    North         East     Units Scale Factor Converg.
 HV6208;SPC MD       -   139,849.381   459,964.354   MT  0.99995021   +0 26 02.5
 HV6208;SPC MD       -   458,822.51  1,509,066.38   sFT  0.99995021   +0 26 02.5
 HV6208;UTM  18      - 4,309,209.403   386,574.362   MT  0.99975842   -0 49 19.9
 HV6208
 HV6208!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6208!SPC MD       -   1.00000533  x   0.99995021  =   0.99995554
 HV6208!UTM  18      -   1.00000533  x   0.99975842  =   0.99976375
 HV6208
 HV6208:                Primary Azimuth Mark                     Grid Az
 HV6208:SPC MD       -  TURKEY                                   162 12 15.3
 HV6208:UTM  18      -  TURKEY                                   163 27 37.7
 HV6208
 HV6208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8657409209(NAD 83)
 HV6208
 HV6208|---------------------------------------------------------------------|
 HV6208| PID    Reference Object                     Distance      Geod. Az  |
 HV6208|                                                           dddmmss.s |
 HV6208| HV6178 TURKEY                              APPROX. 2.6 KM 1623817.8 |
 HV6208| HV6175 TOP                                 APPROX. 0.9 KM 2470350.5 |
 HV6208|---------------------------------------------------------------------|
 HV6208
 HV6208                          SUPERSEDED SURVEY CONTROL
 HV6208
 HV6208  NAD 83(1986)-  38 55 28.10703(N)    076 18 30.52418(W) AD(       ) 3
 HV6208  NAD 27      -  38 55 27.69400(N)    076 18 31.72000(W) AD(       ) 3
 HV6208  USSD        -  38 55 28.08700(N)    076 18 31.51100(W) AD(       ) 3
 HV6208
 HV6208.Superseded values are not recommended for survey control.
 HV6208
 HV6208.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6208.See file dsdata.pdf to determine how the superseded data were derived.
 HV6208
 HV6208_MARKER: U = CONCRETE POST
 HV6208_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6208_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6208_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6208
 HV6208  HISTORY     - Date     Condition        Report By
 HV6208  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6208  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6208
 HV6208                          STATION DESCRIPTION
 HV6208
 HV6208'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6208'STATION IS ON THE EASTERN SHORE OF COX CREEK, ABOUT 1-1/2 MILES N
 HV6208'OF EASTERN BAY, AND 1 MILE S OF ENTRANCE TO WAREHOUSE CREEK, IN
 HV6208'A CULTIVATED FIELD, ABOUT 10 FEET ABOVE HIGH WATER, 43 YARDS FROM
 HV6208'SHORE, 28 YARDS NE OF TOP OF BANK, AND 30 YARDS NE OF A LONE CEDAR
 HV6208'TREE AT EDGE OF BANK.  STATION IS MARKED BY A HOLE IN THE CENTER
 HV6208'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6208'8-INCH CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 6
 HV6208'INCHES ABOVE SURFACE OF GROUND.  THE LETTERS M.S.F.S. AND
 HV6208'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS
 HV6208'CENTER OF 2-INCH DRAINTILE PIPE BURIED WITH THE TOP 2 INCHES
 HV6208'BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6208'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--N CHIMNEY OF HOUSE, 3
 HV6208'1/4 MILES, S 26 DEG 45 MIN W.  LEFT TANGENT OF HOUSE, 1 MILE, S 55
 HV6208'DEG 34 MIN W.  N CHIMNEY OF HOUSE, 1/2 MILE, S 70 DEG 47 MIN W.
 HV6208'CHIMNEY OF SMALL HOUSE, 1-1/4 MILES, N 61 DEG 03 MIN W.  S CHIMNEY OF
 HV6208'HOUSE, 1-1/4 MILES, N 42 DEG 30 MIN W.  W CHIMNEY OF HOUSE, 1/2
 HV6208'MILE, N 9 DEG 03 MIN W.  CUPOLA ON BARN, 1/4 MILE, N 33 DEG
 HV6208'23 MIN E.  W GABLE OF BARN, 1/2 MILE, S 74 DEG 20 MIN E.  LEFT
 HV6208'TANGENT OF SMALL FISHING SHACK, 5/8 MILE, S 34 DEG 19 MIN E.
 HV6208'RIGHT TANGENT OF BARN, 1-1/4 MILES, S 22 DEG 51 MIN E.
 HV6208
 HV6208                          STATION RECOVERY (1940)
 HV6208
 HV6208'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6208'STATION MARK SEARCHED FOR BUT NOT FOUND.  MARK WAS ORIGINALLY
 HV6208'LOCATED IN CULTIVATED FIELD AND WAS PROBABLY PLOWED OUT.  RECOMMEND
 HV6208'THAT MARK BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0426 ***********************************************************************
 HU0426  DESIGNATION -  DELMARVA
 HU0426  PID         -  HU0426
 HU0426  STATE/COUNTY-  MD/WICOMICO
 HU0426  COUNTRY     -  US
 HU0426  USGS QUAD   -  DELMAR (2016)
 HU0426
 HU0426                         *CURRENT SURVEY CONTROL
 HU0426  ______________________________________________________________________
 HU0426* NAD 83(1991) POSITION- 38 23 39.83357(N) 075 33 34.49025(W)   ADJUSTED
 HU0426* NAVD 88 ORTHO HEIGHT -    12.006 (meters)       39.39  (feet) ADJUSTED
 HU0426  ______________________________________________________________________
 HU0426  GEOID HEIGHT    -        -35.804 (meters)                     GEOID18
 HU0426  LAPLACE CORR    -         -1.16  (seconds)                    DEFLEC18
 HU0426  DYNAMIC HEIGHT  -         11.998 (meters)       39.36  (feet) COMP
 HU0426  MODELED GRAVITY -    980,008.1   (mgal)                       NAVD 88
 HU0426
 HU0426  HORZ ORDER      -  SECOND
 HU0426  VERT ORDER      -  FIRST     CLASS I
 HU0426
 HU0426.The horizontal coordinates were established by classical geodetic methods
 HU0426.and adjusted by the National Geodetic Survey in January 1992.
 HU0426
 HU0426.The orthometric height was determined by differential leveling and
 HU0426.adjusted by the NATIONAL GEODETIC SURVEY
 HU0426.in June 1991.
 HU0426
 HU0426.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0426.GEOID18 height accuracy estimate available here.
 HU0426
 HU0426.Click photographs - Photos may exist for this station.
 HU0426
 HU0426.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0426
 HU0426.The dynamic height is computed by dividing the NAVD 88
 HU0426.geopotential number by the normal gravity value computed on the
 HU0426.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0426.degrees latitude (g = 980.6199 gals.).
 HU0426
 HU0426.The modeled gravity was interpolated from observed gravity values.
 HU0426
 HU0426. The following values were computed from the NAD 83(1991) position.
 HU0426
 HU0426;                    North         East     Units Scale Factor Converg.
 HU0426;SPC MD       -    81,773.988   525,827.890   MT  0.99998492   +0 54 14.6
 HU0426;SPC MD       -   268,286.83  1,725,153.67   sFT  0.99998492   +0 54 14.6
 HU0426;UTM  18      - 4,249,723.999   451,134.422   MT  0.99962941   -0 20 51.2
 HU0426
 HU0426!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0426!SPC MD       -   1.00000373  x   0.99998492  =   0.99998865
 HU0426!UTM  18      -   1.00000373  x   0.99962941  =   0.99963314
 HU0426
 HU0426:                Primary Azimuth Mark                     Grid Az
 HU0426:SPC MD       -  DELMARVA AZ MK 2                         107 28 28.4
 HU0426:UTM  18      -  DELMARVA AZ MK 2                         108 43 34.2
 HU0426
 HU0426_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5113449723(NAD 83)
 HU0426
 HU0426|---------------------------------------------------------------------|
 HU0426| PID    Reference Object                     Distance      Geod. Az  |
 HU0426|                                                           dddmmss.s |
 HU0426| HU0427 DELMARVA RM 1                        22.290 METERS 08244     |
 HU0426| HU1235 DELMARVA AZ MK 2                    APPROX. 0.8 KM 1082243.0 |
 HU0426| HU0424 DELMARVA AZ MK                                     2722035.1 |
 HU0426| HU0425 DELMARVA RM 2                        24.175 METERS 34946     |
 HU0426|---------------------------------------------------------------------|
 HU0426
 HU0426                          SUPERSEDED SURVEY CONTROL
 HU0426
 HU0426  NAD 83(1986)-  38 23 39.82518(N)    075 33 34.51480(W) AD(       ) 2
 HU0426  NAD 27      -  38 23 39.40800(N)    075 33 35.78800(W) AD(       ) 2
 HU0426  NGVD 29 (06/12/91)   12.262  (m)           40.23   (f) ADJUSTED    1 1
 HU0426  NGVD 29 (??/??/87)   12.258  (m)           40.22   (f) SUPERSEDED  1 1
 HU0426  NGVD 29              12.26   (m)           40.2    (f) LEVELING    3  
 HU0426
 HU0426.Superseded values are not recommended for survey control.
 HU0426
 HU0426.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0426.See file dsdata.pdf to determine how the superseded data were derived.
 HU0426
 HU0426_MARKER: DS = TRIANGULATION STATION DISK
 HU0426_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0426_STAMPING: DELMARVA 1956
 HU0426_MARK LOGO: CGS
 HU0426_PROJECTION: RECESSED 10 CENTIMETERS
 HU0426_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0426+STABILITY: SURFACE MOTION
 HU0426_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0426+SATELLITE: SATELLITE OBSERVATIONS - April 24, 2019
 HU0426
 HU0426  HISTORY     - Date     Condition        Report By
 HU0426  HISTORY     - 1956     MONUMENTED       CGS
 HU0426  HISTORY     - 1963     GOOD             CGS
 HU0426  HISTORY     - 1971     GOOD             NGS
 HU0426  HISTORY     - 1972     GOOD             MD1380
 HU0426  HISTORY     - 19891122 GOOD             NGS
 HU0426  HISTORY     - 20020220 GOOD             MDSHA
 HU0426  HISTORY     - 20190424 SEE DESCRIPTION  PROFLN
 HU0426
 HU0426                          STATION DESCRIPTION
 HU0426
 HU0426'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (WFD)
 HU0426'THE STATION IS LOCATED ABOUT 3 MILES NORTHEAST OF SALISBURY AT
 HU0426'THE DELMARVA AIRPORT, AND 14.5 FEET SOUTHWEST OF THE SOUTHWEST
 HU0426'CORNER OF THE HANGER.
 HU0426'
 HU0426'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND
 HU0426'U.S. HIGHWAY 13 IN SALISBURY, GO EAST ON U.S. HIGHWAY 50 FOR
 HU0426'2.5 MILES TO A CROSSROAD, TURN LEFT (NORTH) AND FOLLOW A MACADAM
 HU0426'ROAD FOR 1.6 MILES TO ZION ROAD ON THE LEFT, TURN LEFT (WEST) AND
 HU0426'FOLLOW ZION ROAD FOR 0.5 MILE TO THE AIRPORT ON THE LEFT AND
 HU0426'THE STATION.
 HU0426'
 HU0426'TO REACH THE AZIMUTH MARK FROM THE STATION, GO WEST ON ZION ROAD
 HU0426'FOR 0.25 MILE TO THE MARK ON THE LEFT AS DESCRIBED.
 HU0426'
 HU0426'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 HU0426'DELMARVA 1956.
 HU0426'
 HU0426'REFERENCE MARK 1 IS 9 FEET SOUTH OF THE SOUTHEAST CORNER OF THE
 HU0426'HANGER.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 HU0426'DELMARVA NO 1 1956.
 HU0426'
 HU0426'REFERENCE MARK 2 IS 26 FEET SOUTH OF THE NORTHWEST CORNER OF
 HU0426'THE HANGER, AND 4 FEET WEST OF THE WEST WALL.  THE MARK IS FLUSH
 HU0426'WITH THE GROUND, AND THE DISK IS STAMPED DELMARVA NO 2 1956.
 HU0426'
 HU0426'THE AZIMUTH MARK IS 18 FEET SOUTH OF THE CENTER OF ZION ROAD,
 HU0426'5 FEET EAST OF A TELEPHONE POLE, AND 1.5 FEET EAST OF A WHITE
 HU0426'4 IN X 4 IN WITNESS POST.  THE MARK IS FLUSH WITH THE SURFACE OF
 HU0426'THE GROUND, AND THE DISK IS STAMPED DELMARVA 1956.
 HU0426'
 HU0426'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HU0426
 HU0426                          STATION RECOVERY (1963)
 HU0426
 HU0426'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963
 HU0426'2.2 MI NE FROM SALISBURY.
 HU0426'1.3 MILES NORTHEAST ALONG U.S. HIGHWAY 13 FROM THE UNDERPASS OF
 HU0426'THE PENNSYLVANIA RAILROAD UNDER U.S. HIGHWAY 13 AT SALISBURY,
 HU0426'THENCE 0.85 MILE EAST ALONG ZION ROAD, AT THE ABANDONED DELMARVA
 HU0426'AIRPORT, ABOUT 132 YARDS SOUTH OF CENTER LINE OF THE ROAD, 27.3
 HU0426'WEST OF SOUTHWEST CORNER OF A CINDER BLOCK EXTENSION ON SOUTH
 HU0426'SIDE OF ABANDONED HANGAR BUILDING, 14.5 FEET SOUTHWEST OF
 HU0426'SOUTHWEST CORNER OF ABANDONED HANGAR, AND SET IN THE TOP OF A
 HU0426'CONCRETE POST 1 INCH BELOW SURFACE OF GROUND.
 HU0426
 HU0426                          STATION RECOVERY (1971)
 HU0426
 HU0426'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 HU0426'THE STATION, REFERENCE MARK NO. 1 AND REFERENCE MARK NO. 2 WERE
 HU0426'ALL RECOVERED AND FOUND TO BE IN GOOD CONDITION.  THERE WAS AN
 HU0426'OLD BROKENDOWN TRACTOR SETTING OVER THE STATION MARK AND THE
 HU0426'STATION COULD NOT BE OCCUPIED.  THE DISTANCES TO THE REFERENCE
 HU0426'MARKS CHECKED WITH THE 1956 MEASUREMENTS.  THE AZIMUTH MARK WOULD
 HU0426'NOT SEE THE STATION FROM A GROUND SETUP DUE TO NEW PINE TREES
 HU0426'ABOUT 20 FEET TALL.  THE AZIMUTH MARK WAS IN THE WAY OF NEW
 HU0426'HIGHWAY CONSTRUCTION AND WAS DESTROYED.  THERE WAS NO AVAILABLE
 HU0426'PLACE TO SET A NEW AZIMUTH MARK.  HOWEVER, THE TWO WBOC RADIO
 HU0426'MASTS ARE VISIBLE FROM THE GROUND AND CAN BE USED FOR AZIMUTH
 HU0426'DIRECTION CONTROL.  THE REFERENCE MARKS AND STATION ARE AS
 HU0426'DESCRIBED IN THE 1956 DESCRIPTION.
 HU0426'
 HU0426'THE STATION IS ABOUT 2.75 MILES NORTHEAST OF THE CENTER OF
 HU0426'SALISBURY AND ABOUT 0.1 MILE SOUTH OF ZION ROAD.  THE HANGER
 HU0426'PREVIOUSLY DESCRIBED STILL REMAINS AND IS IN USE, ONLY A SODED
 HU0426'AIRSTRIP REMAINS OF THE AIRPORT.  THE HANGER AND STATION IS ON
 HU0426'PROPERTY OWNED BY MR. FRED ENNIS WHO LIVES IN HOUSE JUST
 HU0426'NORTHEAST OF HANGER.
 HU0426'
 HU0426'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAYS 50
 HU0426'AND 13 IN SALISBURY.  GO NORTH ON U.S. HIGHWAY 13 FOR 2.1 MILE
 HU0426'TO A ROAD RIGHT, JUST PAST A DRIVEINN EATING PLACE, TURN RIGHT
 HU0426'ON ZION ROAD AND GO EAST AND NORTHEAST FOR 0.65 MILE TO NEW
 HU0426'HIGHWAY CONSTRUCTION, CONTINUE ON ZION ROAD FOR 0.25 MILE TO
 HU0426'CANNON DR. TO THE LEFT, TURN RIGHT ON PRIVATE DRIVE AND GO SOUTH
 HU0426'FOR 0.1 MILE, TURN RIGHT AND GO WEST ACROSS FIELD FOR 0.05 MILE
 HU0426'TO THE SOUTHWEST CORNER OF HANGER AND STATION AS DESCRIBED.
 HU0426'
 HU0426'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU0426'2.75 MILES NORTHEAST OF CENTER SALISBURY.
 HU0426
 HU0426                          STATION RECOVERY (1972)
 HU0426
 HU0426'RECOVERY NOTE BY CITY OF SALISBURY MARYLAND 1972 (OH)
 HU0426'DELMARVA 1956 GOOD
 HU0426'
 HU0426'DELMARVA NO 1 1956 (REF) GOOD
 HU0426'
 HU0426'DELMARVA NO 2 1956 (REF.) GOOD
 HU0426'
 HU0426'DELMARVA 1956 (AZIMUTH) DESTROYED
 HU0426'
 HU0426'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 13 AND
 HU0426'U.S. HIGHWAY 50 IN SALISBURY, GO NORTH ON U.S. HIGHWAY 13 FOR
 HU0426'2.1 MILES TO ZION ROAD ON THE RIGHT, TURN RIGHT AND FOLLOW ZION
 HU0426'ROAD FOR 0.8 MILE TO THE AIRSTRIP AND HANGER AND THE STATION ON
 HU0426'THE RIGHT.  THE STATION IS ABOUT 400 FEET FROM ZION ROAD.
 HU0426
 HU0426                          STATION RECOVERY (1989)
 HU0426
 HU0426'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989 (RGP)
 HU0426'1.3 KM (0.81 MI) EASTERLY ALONG ZION ROAD FROM ITS JUNCTION WITH U.S.
 HU0426'HIGHWAY 13 BUSINESS IN SALISBURY, THENCE 0.1 KM (0.06 MI) SOUTH ALONG
 HU0426'A DRIVEWAY, AT A PRIVATE AIRPORT AT 875 ZION ROAD, AT THE SOUTHWEST
 HU0426'CORNER OF A HANGER, 82.0 M (269.03 FT) WEST OF THE EXTENDED CENTER OF
 HU0426'THE DRIVEWAY, 4.4 M (14.44 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF
 HU0426'THE HANGER, 0.4 M (1.31 FT) SOUTH OF A WITNESS POST, AND IN A
 HU0426'CONCRETE MONUMENT THAT IS 0.1 M (0.33 FT) BELOW THE GROUND SURFACE.
 HU0426
 HU0426                          STATION RECOVERY (2002)
 HU0426
 HU0426'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0426'RECOVERED AS DESCRIBED.
 HU0426
 HU0426                          STATION RECOVERY (2019)
 HU0426
 HU0426'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU0426'THE PROPERTY OWNER WAS NOT AVAILABLE TO REQUEST PERMISSION TO ENTER
 HU0426'THE PROPERTY OTHER THAN KNOCKING ON THE DOOR.  THE DRIVEWAY TO ENTER
 HU0426'THE PROPERTY TOWARD WHAT MAY STILL BE A GRASS AIRSTRIP IS OPPOSITE
 HU0426'CANNON DR. FROM THE DOOR, IT LOOKS LIKE THE MARKS WOULD STILL BE
 HU0426'THERE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1235 ***********************************************************************
 HU1235  DESIGNATION -  DELMARVA AZ MK 2
 HU1235  PID         -  HU1235
 HU1235  STATE/COUNTY-  MD/WICOMICO
 HU1235  COUNTRY     -  US
 HU1235  USGS QUAD   -  DELMAR (2016)
 HU1235
 HU1235                         *CURRENT SURVEY CONTROL
 HU1235  ______________________________________________________________________
 HU1235* NAD 83(1991) POSITION- 38 23 31.39939(N) 075 33 02.23964(W)   NO CHECK
 HU1235* NAVD 88 ORTHO HEIGHT -    13.390 (meters)       43.93  (feet) ADJUSTED
 HU1235  ______________________________________________________________________
 HU1235  GEOID HEIGHT    -        -35.812 (meters)                     GEOID18
 HU1235  LAPLACE CORR    -         -1.12  (seconds)                    DEFLEC18
 HU1235  DYNAMIC HEIGHT  -         13.382 (meters)       43.90  (feet) COMP
 HU1235  MODELED GRAVITY -    980,007.8   (mgal)                       NAVD 88
 HU1235
 HU1235  HORZ ORDER      -  THIRD
 HU1235  VERT ORDER      -  SECOND    CLASS I
 HU1235
 HU1235.The horizontal coordinates were established by classical geodetic methods
 HU1235.and adjusted by the National Geodetic Survey in January 1992.
 HU1235
 HU1235.No horizontal observational check was made to the station.
 HU1235
 HU1235.The orthometric height was determined by differential leveling and
 HU1235.adjusted by the NATIONAL GEODETIC SURVEY
 HU1235.in June 1991.
 HU1235
 HU1235.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1235.GEOID18 height accuracy estimate available here.
 HU1235
 HU1235.Click photographs - Photos may exist for this station.
 HU1235
 HU1235.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1235
 HU1235.The dynamic height is computed by dividing the NAVD 88
 HU1235.geopotential number by the normal gravity value computed on the
 HU1235.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1235.degrees latitude (g = 980.6199 gals.).
 HU1235
 HU1235.The modeled gravity was interpolated from observed gravity values.
 HU1235
 HU1235. The following values were computed from the NAD 83(1991) position.
 HU1235
 HU1235;                    North         East     Units Scale Factor Converg.
 HU1235;SPC MD       -    81,526.348   526,614.523   MT  0.99998526   +0 54 34.8
 HU1235;SPC MD       -   267,474.36  1,727,734.48   sFT  0.99998526   +0 54 34.8
 HU1235;UTM  18      - 4,249,459.330   451,915.180   MT  0.99962847   -0 20 31.1
 HU1235
 HU1235!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1235!SPC MD       -   1.00000352  x   0.99998526  =   0.99998878
 HU1235!UTM  18      -   1.00000352  x   0.99962847  =   0.99963199
 HU1235
 HU1235_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5191549459(NAD 83)
 HU1235
 HU1235                          SUPERSEDED SURVEY CONTROL
 HU1235
 HU1235  NAD 83(1986)-  38 23 31.39089(N)    075 33 02.26424(W) AD(       ) 3
 HU1235  NGVD 29 (06/12/91)   13.645  (m)           44.77   (f) ADJUSTED    2 1
 HU1235  NGVD 29 (03/20/88)   13.     (m)           43.     (f) VERT ANG       
 HU1235
 HU1235.Superseded values are not recommended for survey control.
 HU1235
 HU1235.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1235.See file dsdata.pdf to determine how the superseded data were derived.
 HU1235
 HU1235_MARKER: DZ = AZIMUTH MARK DISK
 HU1235_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1235_STAMPING: DELMARVA 1956 NO 2 1984
 HU1235_MARK LOGO: NGS
 HU1235_PROJECTION: RECESSED 20 CENTIMETERS
 HU1235_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1235+STABILITY: SURFACE MOTION
 HU1235_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1235+SATELLITE: SATELLITE OBSERVATIONS - April 24, 2019
 HU1235
 HU1235  HISTORY     - Date     Condition        Report By
 HU1235  HISTORY     - 19891122 MONUMENTED       NGS
 HU1235  HISTORY     - 20190424 GOOD             PROFLN
 HU1235
 HU1235                          STATION DESCRIPTION
 HU1235
 HU1235'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989 (RGP)
 HU1235'IN SALISBURY, AT THE INTERSECTION OF PARKER AND OUTTEN ROADS. 77.0 M
 HU1235'(252.62 FT) NORTH OF THE EXTENDED CENTER OF OUTTEN ROAD, 18.6 M
 HU1235'(61.02 FT) NORTH OF THE EXTENDED CENTER OF A DRIVEWAY, 13.0 M
 HU1235'(42.65 FT) SOUTH OF THE CENTERLINE OF THE SOUTHBOUND LANES OF U.S.
 HU1235'HIGHWAY 13 BYPASS, 0.9 M (2.95 FT) NORTH OF A WITNESS POST, ON THE
 HU1235'EXTENDED CENTER OF PARKER ROAD, LEVEL WITH PARKER ROAD, AND IN A
 HU1235'CONCRETE MONUMENT THAT IS 0.2 M (0.66 FT) BELOW THE GROUND SURFACE.
 HU1235
 HU1235                          STATION RECOVERY (2019)
 HU1235
 HU1235'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU1235'RECOVERED USING THE EXTENDED CENTER OF PARKER ROAD AND DISTANCE OFF
 HU1235'SOUTHBOUND LANES OF US 50.  PLACED A ROUND VALVE BOX PROJECTING 0.5 FT
 HU1235'(15 CM) OVER THE MARK WITH SQUARE CONCRETE STEPPING STONE AS A COVER
 HU1235'FOR THE BOX.  THE MARK IS IN THICK WOODS, 31 FT (9.4 M) NORTH TOWARD
 HU1235'US 50 FROM THE GUARDRAIL AT THE NORTH END OF CUT-OFF PARKER ROAD AND 1
 HU1235'FT (0.3 M) NORTH OF A SHORT 1 INCH PVC PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0427 ***********************************************************************
 HU0427  DESIGNATION -  DELMARVA RM 1
 HU0427  PID         -  HU0427
 HU0427  STATE/COUNTY-  MD/WICOMICO
 HU0427  COUNTRY     -  US
 HU0427  USGS QUAD   -  DELMAR (2016)
 HU0427
 HU0427                         *CURRENT SURVEY CONTROL
 HU0427  ______________________________________________________________________
 HU0427* NAD 83(1986) POSITION- 38 23 39.92   (N) 075 33 33.58   (W)   HD_HELD1
 HU0427* NAVD 88 ORTHO HEIGHT -    12.016 (meters)       39.42  (feet) ADJUSTED
 HU0427  ______________________________________________________________________
 HU0427  GEOID HEIGHT    -        -35.804 (meters)                     GEOID18
 HU0427  DYNAMIC HEIGHT  -         12.009 (meters)       39.40  (feet) COMP
 HU0427  MODELED GRAVITY -    980,008.1   (mgal)                       NAVD 88
 HU0427
 HU0427  VERT ORDER      -  FIRST     CLASS I
 HU0427
 HU0427.The horizontal coordinates were determined by differentially corrected
 HU0427.hand held GPS observations or other comparable positioning techniques
 HU0427.and have an estimated accuracy of +/- 3 meters.
 HU0427
 HU0427.The orthometric height was determined by differential leveling and
 HU0427.adjusted by the NATIONAL GEODETIC SURVEY
 HU0427.in June 1991.
 HU0427
 HU0427.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0427.GEOID18 height accuracy estimate available here.
 HU0427
 HU0427.Click photographs - Photos may exist for this station.
 HU0427
 HU0427.The dynamic height is computed by dividing the NAVD 88
 HU0427.geopotential number by the normal gravity value computed on the
 HU0427.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0427.degrees latitude (g = 980.6199 gals.).
 HU0427
 HU0427.The modeled gravity was interpolated from observed gravity values.
 HU0427
 HU0427;                    North         East    Units  Estimated Accuracy
 HU0427;SPC MD       -    81,777.0     525,849.9     MT  (+/- 3 meters HH1 GPS) 
 HU0427
 HU0427_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5115649726(NAD 83)
 HU0427
 HU0427                          SUPERSEDED SURVEY CONTROL
 HU0427
 HU0427  NGVD 29 (11/26/84)   12.268  (m)           40.25   (f) ADJUSTED    1 1
 HU0427
 HU0427.Superseded values are not recommended for survey control.
 HU0427
 HU0427.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0427.See file dsdata.pdf to determine how the superseded data were derived.
 HU0427
 HU0427_MARKER: DR = REFERENCE MARK DISK
 HU0427_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0427_STAMPING: DELMARVA NO 1 1956
 HU0427_MARK LOGO: CGS
 HU0427_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0427+STABILITY: SURFACE MOTION
 HU0427
 HU0427  HISTORY     - Date     Condition        Report By
 HU0427  HISTORY     - 1956     MONUMENTED       CGS
 HU0427  HISTORY     - 1963     GOOD             CGS
 HU0427  HISTORY     - 19840619 GOOD             NGS
 HU0427
 HU0427                          STATION DESCRIPTION
 HU0427
 HU0427'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0427'2.2 MI NE FROM SALISBURY.
 HU0427'1.3 MILES NORTHEAST ALONG U.S. HIGHWAY 13 FROM THE UNDERPASS OF
 HU0427'THE PENNSYLVANIA RAILROAD UNDER U.S. HIGHWAY 13 AT SALISBURY,
 HU0427'THENCE 0.85 MILE EAST ALONG ZION ROAD, AT THE ABANDONED DELMARVA
 HU0427'AIRPORT, 73.2 FEET EAST-SOUTHEAST OF TRIANGULATION STATION
 HU0427'DELMARVA DESCRIBED, 8.7 FEET SOUTH-SOUTHWEST OF SOUTHEAST CORNER
 HU0427'OF ABANDONED HANGAR, AND SET IN THE TOP OF A CONCRETE POST FLUSH
 HU0427'WITH GROUND.
 HU0427
 HU0427                          STATION RECOVERY (1984)
 HU0427
 HU0427'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HU0427'THE MARK IS LOCATED ABOUT 4.5 KM (2.80 MI) NORTHEAST OF SALISBURY,
 HU0427'0.15 KM (0.10 MI) NORTH OF U.S. HIGHWAY 13 BYPASS AND AT THE OLD
 HU0427'DELMARVA AIRPORT.  OWNERSHIP--MR. FRED ENNIS.
 HU0427'TO REACH THE MARK FROM THE TOP OF THE OVERPASS BRIDGE AT THE
 HU0427'INTERSECTION OF U.S. HIGHWAY 50 AND BUSINESS U.S. HIGHWAY 13 AT
 HU0427'SALISBURY, GO NORTH ON U.S. HIGHWAY 13 FOR 3.4 KM (2.10 MI) TO A SIDE
 HU0427'ROAD RIGHT.  TURN RIGHT AND GO EAST ON ZION ROAD FOR 1.4 KM (0.85 MI)
 HU0427'TO A DIRT ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTH ON THE DIRT ROAD
 HU0427'FOR 0.1 KM (0.05 MI) TO THE SOUTH SIDE OF MR. ENNISS HOME.  BEAR RIGHT
 HU0427'AND GO WEST-SOUTHWEST ACROSS DIRT RUNWAY FOR 0.1 KM (0.05 MI) TO THE
 HU0427'SOUTHEAST CORNER OF THE LONE HANGER AND THE MARK.  THE MARK IS SET IN
 HU0427'THE TOP OF A 0.3 M (1.0 FT) ROUND CONCRETE POST RECESSED BELOW THE
 HU0427'SURFACE OF THE GROUND 0.05 M (0.2 FT).  IT IS 22.3 M (73.2 FT) EAST OF
 HU0427'A WITNESS POST, 16.2 M (53.1 FT) EAST-SOUTHEAST OF THE SOUTHWEST
 HU0427'CORNER OF THE AIRPORT HANGER AND 2.7 M (8.9 FT) SOUTH-SOUTHWEST OF THE
 HU0427'SOUTHEAST CORNER OF THE AIRPORT HANGER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0425 ***********************************************************************
 HU0425  DESIGNATION -  DELMARVA RM 2
 HU0425  PID         -  HU0425
 HU0425  STATE/COUNTY-  MD/WICOMICO
 HU0425  COUNTRY     -  US
 HU0425  USGS QUAD   -  DELMAR (2016)
 HU0425
 HU0425                         *CURRENT SURVEY CONTROL
 HU0425  ______________________________________________________________________
 HU0425* NAD 83(1986) POSITION- 38 23 40.60   (N) 075 33 34.67   (W)   HD_HELD1
 HU0425* NAVD 88 ORTHO HEIGHT -    12.391 (meters)       40.65  (feet) ADJUSTED
 HU0425  ______________________________________________________________________
 HU0425  GEOID HEIGHT    -        -35.803 (meters)                     GEOID18
 HU0425  DYNAMIC HEIGHT  -         12.384 (meters)       40.63  (feet) COMP
 HU0425  MODELED GRAVITY -    980,008.1   (mgal)                       NAVD 88
 HU0425
 HU0425  VERT ORDER      -  FIRST     CLASS I
 HU0425
 HU0425.The horizontal coordinates were determined by differentially corrected
 HU0425.hand held GPS observations or other comparable positioning techniques
 HU0425.and have an estimated accuracy of +/- 3 meters.
 HU0425
 HU0425.The orthometric height was determined by differential leveling and
 HU0425.adjusted by the NATIONAL GEODETIC SURVEY
 HU0425.in June 1991.
 HU0425
 HU0425.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0425.GEOID18 height accuracy estimate available here.
 HU0425
 HU0425.Click photographs - Photos may exist for this station.
 HU0425
 HU0425.The dynamic height is computed by dividing the NAVD 88
 HU0425.geopotential number by the normal gravity value computed on the
 HU0425.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0425.degrees latitude (g = 980.6199 gals.).
 HU0425
 HU0425.The modeled gravity was interpolated from observed gravity values.
 HU0425
 HU0425;                    North         East    Units  Estimated Accuracy
 HU0425;SPC MD       -    81,797.5     525,823.2     MT  (+/- 3 meters HH1 GPS) 
 HU0425
 HU0425_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5113049747(NAD 83)
 HU0425
 HU0425                          SUPERSEDED SURVEY CONTROL
 HU0425
 HU0425  NGVD 29 (11/26/84)   12.644  (m)           41.48   (f) ADJUSTED    1 1
 HU0425
 HU0425.Superseded values are not recommended for survey control.
 HU0425
 HU0425.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0425.See file dsdata.pdf to determine how the superseded data were derived.
 HU0425
 HU0425_MARKER: DR = REFERENCE MARK DISK
 HU0425_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0425_STAMPING: DELMARVA NO 2 1956
 HU0425_MARK LOGO: CGS
 HU0425_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0425+STABILITY: SURFACE MOTION
 HU0425_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0425+SATELLITE: SATELLITE OBSERVATIONS - June 19, 1984
 HU0425
 HU0425  HISTORY     - Date     Condition        Report By
 HU0425  HISTORY     - 1956     MONUMENTED       CGS
 HU0425  HISTORY     - 1963     GOOD             CGS
 HU0425  HISTORY     - 19840619 GOOD             NGS
 HU0425
 HU0425                          STATION DESCRIPTION
 HU0425
 HU0425'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0425'2.2 MI NE FROM SALISBURY.
 HU0425'1.3 MILES NORTHEAST ALONG U.S. HIGHWAY 13 FROM THE UNDERPASS OF
 HU0425'THE PENNSYLVANIA RAILROAD UNDER U.S. HIGHWAY 13 AT SALISBURY,
 HU0425'THENCE 0.85 MILE EAST ALONG ZION ROAD, AT THE ABANDONED DELMARVA
 HU0425'AIRPORT, ABOUT 102 YARDS SOUTH OF CENTER LINE OF THE ROAD, 26.3
 HU0425'FEET SOUTH OF NORTHWEST CORNER OF ABANDONED HANGAR, 80.5 FEET
 HU0425'NORTH-NORTHEAST OF TRIANGULATION STATION DELMARVA DESCRIBED, 3.6
 HU0425'FEET WEST OF WEST WALL OF HANGAR, AND SET IN THE TOP OF A
 HU0425'CONCRETE POST FLUSH WITH GROUND.
 HU0425
 HU0425                          STATION RECOVERY (1984)
 HU0425
 HU0425'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HU0425'THE MARK IS LOCATED ABOUT 4.5 KM (2.80 MI) NORTHEAST OF SALISBURY,
 HU0425'0.15 KM (0.10 MI) NORTH OF U.S. HIGHWAY 13 BYPASS AND AT THE OLD
 HU0425'DELMARVA AIRPORT.  OWNERSHIP--MR. FRED ENNIS.
 HU0425'TO REACH THE MARK FROM THE TOP OF THE OVERPASS BRIDGE AT THE
 HU0425'INTERSECTION OF U.S. HIGHWAY 50 AND BUSINESS U.S. HIGHWAY 13 AT
 HU0425'SALISBURY, GO NORTH ON U.S. HIGHWAY 13 FOR 3.4 KM (2.10 MI) TO A SIDE
 HU0425'ROAD RIGHT.  TURN RIGHT AND GO EAST ON ZION ROAD FOR 1.4 KM (0.85 MI)
 HU0425'TO A DIRT ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTH ON THE DIRT ROAD
 HU0425'FOR 0.1 KM (0.05 MI) TO THE SOUTH SIDE OF MR. ENNISS HOME.  BEAR RIGHT
 HU0425'AND GO WEST-SOUTHWEST ACROSS DIRT RUNWAY FOR 0.1 KM (0.05 MI) TO THE
 HU0425'NORTHWEST CORNER OF THE LONE HANGER AND THE MARK.  THE MARK IS SET IN
 HU0425'THE TOP OF A 0.3 M (1.0 FT) ROUND CONCRETE POST FLUSH WITH THE GROUND.
 HU0425'IT IS 8.0 M (26.2 FT) SOUTH-SOUTHWEST OF THE NORTHWEST CORNER OF THE
 HU0425'AIRPORT HANGER, 21.3 M (69.9 FT) NORTH-NORTHWEST OF THE SOUTHWEST
 HU0425'CORNER OF THE AIRPORT HANGER, 23.8 M (78.1 FT) NORTH OF A WITNESS POST
 HU0425'AND 1.21 M (4.0 FT) WEST OF THE WEST SIDE OF THE AIRPORT HANGER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6738 ***********************************************************************
 JV6738  DESIGNATION -  DELP AZ MK
 JV6738  PID         -  JV6738
 JV6738  STATE/COUNTY-  MD/HARFORD
 JV6738  COUNTRY     -  US
 JV6738  USGS QUAD   -  DELTA (2019)
 JV6738
 JV6738                         *CURRENT SURVEY CONTROL
 JV6738  ______________________________________________________________________
 JV6738* NAD 83(2011) POSITION- 39 43 13.53541(N) 076 17 43.26165(W)   ADJUSTED
 JV6738* NAD 83(2011) ELLIP HT-   108.987 (meters)        (06/27/12)   ADJUSTED
 JV6738* NAD 83(2011) EPOCH   -  2010.00
 JV6738* NAVD 88 ORTHO HEIGHT -   141.8   (meters)      465.    (feet) VERTCON3
 JV6738  ______________________________________________________________________
 JV6738  GEOID HEIGHT    -        -32.852 (meters)                     GEOID18
 JV6738  NAD 83(2011) X  -  1,163,898.877 (meters)                     COMP
 JV6738  NAD 83(2011) Y  - -4,772,821.797 (meters)                     COMP
 JV6738  NAD 83(2011) Z  -  4,054,227.396 (meters)                     COMP
 JV6738  LAPLACE CORR    -         -2.64  (seconds)                    DEFLEC18
 JV6738
 JV6738  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6738  Standards:
 JV6738         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6738            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6738  -------------------------------------------------------------------
 JV6738  NETWORK    2.40   5.96           1.05   0.81   3.04      0.49539646
 JV6738  -------------------------------------------------------------------
 JV6738  Click here for local accuracies and other accuracy information.
 JV6738
 JV6738.The horizontal coordinates were established by GPS observations
 JV6738.and adjusted by the National Geodetic Survey in June 2012.
 JV6738
 JV6738.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6738.been affixed to the stable North American tectonic plate. See 
 JV6738.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6738
 JV6738.The horizontal coordinates are valid at the epoch date displayed above
 JV6738.which is a decimal equivalence of Year/Month/Day.
 JV6738
 JV6738.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6738.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6738
 JV6738.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6738.GEOID18 height accuracy estimate available here.
 JV6738
 JV6738.Click photographs - Photos may exist for this station.
 JV6738
 JV6738.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6738
 JV6738.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6738
 JV6738.The ellipsoidal height was determined by GPS observations
 JV6738.and is referenced to NAD 83.
 JV6738
 JV6738. The following values were computed from the NAD 83(2011) position.
 JV6738
 JV6738;                    North         East     Units Scale Factor Converg.
 JV6738;SPC MD       -   228,222.226   460,420.356   MT  1.00005851   +0 26 32.1
 JV6738;SPC MD       -   748,759.09  1,510,562.45   sFT  1.00005851   +0 26 32.1
 JV6738;UTM  18      - 4,397,530.119   388,977.909   MT  0.99975175   -0 49 40.3
 JV6738
 JV6738!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6738!SPC MD       -   0.99998290  x   1.00005851  =   1.00004141
 JV6738!UTM  18      -   0.99998290  x   0.99975175  =   0.99973466
 JV6738
 JV6738_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8897797530(NAD 83)
 JV6738
 JV6738                          SUPERSEDED SURVEY CONTROL
 JV6738
 JV6738  NAD 83(2007)-  39 43 13.53571(N)    076 17 43.26227(W) AD(2002.00) 0
 JV6738  ELLIP H (02/10/07)  109.005  (m)                       GP(2002.00)    
 JV6738  ELLIP H (09/18/02)  109.018  (m)                       GP(       ) 4 2
 JV6738  NAD 83(1991)-  39 43 13.53562(N)    076 17 43.26201(W) AD(       ) 1
 JV6738  ELLIP H (01/27/92)  109.022  (m)                       GP(       ) 4 1
 JV6738  NAD 83(1986)-  39 43 13.52850(N)    076 17 43.26801(W) AD(       ) 1
 JV6738  NGVD 29 (06/18/91)  142.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6738
 JV6738.Superseded values are not recommended for survey control.
 JV6738
 JV6738.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6738.See file dsdata.pdf to determine how the superseded data were derived.
 JV6738
 JV6738_MARKER: DZ = AZIMUTH MARK DISK
 JV6738_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6738_STAMPING: 123 DELP 1989
 JV6738_MARK LOGO: MD-025
 JV6738_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6738_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6738+STABILITY: SURFACE MOTION
 JV6738_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6738+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2004
 JV6738
 JV6738  HISTORY     - Date     Condition        Report By
 JV6738  HISTORY     - 1989     MONUMENTED       RDA
 JV6738  HISTORY     - 19900115 GOOD
 JV6738  HISTORY     - 20041122 GOOD             GEOCAC
 JV6738
 JV6738                          STATION DESCRIPTION
 JV6738
 JV6738'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6738'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTHWEST ALONG
 JV6738'RIDGE ROAD 0.1 MILE TO ITS INTERSECTION WITH PROSPECT ROAD.  TURN LEFT
 JV6738'AND PROCEED SOUTH ALONG PROSPECT ROAD 0.7 MILE TO A 90 DEGREE RIGHT
 JV6738'TURN IN THE ROAD AND THE MARK ON THE LEFT.
 JV6738'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6738'ABOUT 1 INCH BELOW GROUND STAMPED 123 DELP 1989.  THE MARK IS 52.0
 JV6738'FEET SOUTHEAST OF THE CENTERLINE OF PROSPECT ROAD, 11.0 FEET SOUTHWEST
 JV6738'OF CONOWINGO POWER POLE NUMBER 12481, 19.4 FEET NORTHWEST OF A 16 INCH
 JV6738'LOCUST TREE AND 4088.16 FEET FROM THE STATION.
 JV6738
 JV6738                          STATION RECOVERY (1990)
 JV6738
 JV6738'RECOVERED 1990
 JV6738'RECOVERED IN GOOD CONDITION.
 JV6738
 JV6738                          STATION RECOVERY (2004)
 JV6738
 JV6738'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6738'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTHWEST ON RIDGE ROAD
 JV6738'FOR ABOUT 0.1 MILES TO ITS INTERSECTION WITH PROSPECT ROAD.  TURN LEFT
 JV6738'AND GO SOUTHEAST ALONG PROSPECT ROAD ABOUT 0.8 MILES TO A 90 DEGREE
 JV6738'TURN IN THE ROAD TO THE SOUTHWEST AND THE MARK ON THE
 JV6738'LEFT.  THE MARK IS LOCATED IN THE SOUTH ANGLE OF THE INTERSECTION OF
 JV6738'PROSPECT ROAD EXTENDING SOUTHWEST AND A PAVED DRIVEWAY TO APPLEWOOD
 JV6738'FARM EXTENDING SOUTHEAST.  THE MARK IS A STANDARD HARFORD COUNTY
 JV6738'AZIMUTH DISK SET IN CONCRETE FLUSH WITH THE SURFACE STAMPED DELP 123
 JV6738'1989.  THE MARK IS 52.0 FEET SOUTHEAST OF THE CENTERLINE OF PROSPECT
 JV6738'ROAD, 11.0 FEET SOUTHWEST OF UTILITY POLE 12481 27606 42678, ABOUT 10
 JV6738'FEET SOUTH OF A SIX-BY-SIX POST THAT SUPPORTS A SIGN FOR APPLEWOOD
 JV6738'FARM AND MAILBOXES NUMBER 4435 AND 4433, ABOUT 18.0 FEET SOUTHWEST OF
 JV6738'
 JV6738'THE CENTERLINE OF THE PAVED DRIVEWAY, ABOUT 2.5 FEET ABOVE THE LEVEL
 JV6738'OF THE ROAD, AND 4088.16 FEET FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7130 ***********************************************************************
 HV7130  DESIGNATION -  DELTA
 HV7130  PID         -  HV7130
 HV7130  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7130  COUNTRY     -  US
 HV7130  USGS QUAD   -  SOUTH RIVER (2016)
 HV7130
 HV7130                         *CURRENT SURVEY CONTROL
 HV7130  ______________________________________________________________________
 HV7130* NAD 83(1993) POSITION- 38 52 35.85182(N) 076 30 56.93099(W)   ADJUSTED
 HV7130* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7130  ______________________________________________________________________
 HV7130  GEOID HEIGHT    -        -33.454 (meters)                     GEOID18
 HV7130  LAPLACE CORR    -         -3.65  (seconds)                    DEFLEC18
 HV7130  HORZ ORDER      -  THIRD
 HV7130
 HV7130.The horizontal coordinates were established by classical geodetic methods
 HV7130.and adjusted by the National Geodetic Survey in November 1994.
 HV7130
 HV7130.The orthometric height was scaled from a topographic map.
 HV7130
 HV7130.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7130.GEOID18 height accuracy estimate available here.
 HV7130
 HV7130.Click photographs - Photos may exist for this station.
 HV7130
 HV7130.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7130
 HV7130. The following values were computed from the NAD 83(1993) position.
 HV7130
 HV7130;                    North         East     Units Scale Factor Converg.
 HV7130;SPC MD       -   134,421.969   442,013.716   MT  0.99994985   +0 18 14.0
 HV7130;SPC MD       -   441,016.08  1,450,173.33   sFT  0.99994985   +0 18 14.0
 HV7130;UTM  18      - 4,304,177.546   368,512.064   MT  0.99981290   -0 57 05.5
 HV7130
 HV7130!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7130!SPC MD       -   1.00000513  x   0.99994985  =   0.99995498
 HV7130!UTM  18      -   1.00000513  x   0.99981290  =   0.99981803
 HV7130
 HV7130:                Primary Azimuth Mark                     Grid Az
 HV7130:SPC MD       -  TURF                                     307 49 00.1
 HV7130:UTM  18      -  TURF                                     309 04 19.6
 HV7130
 HV7130_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6851204177(NAD 83)
 HV7130
 HV7130|---------------------------------------------------------------------|
 HV7130| PID    Reference Object                     Distance      Geod. Az  |
 HV7130|                                                           dddmmss.s |
 HV7130| CX2687 DELTA RP                              4.320 METERS 03951     |
 HV7130| HV7123 TURF                                APPROX. 0.8 KM 3080714.1 |
 HV7130|---------------------------------------------------------------------|
 HV7130
 HV7130                          SUPERSEDED SURVEY CONTROL
 HV7130
 HV7130  NAD 83(1986)-  38 52 35.84863(N)    076 30 56.94297(W) AD(       ) 3
 HV7130  NAD 27      -  38 52 35.44400(N)    076 30 58.08400(W) AD(       ) 3
 HV7130  USSD        -  38 52 35.80700(N)    076 30 57.90600(W) AD(       ) 3
 HV7130
 HV7130.Superseded values are not recommended for survey control.
 HV7130
 HV7130.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7130.See file dsdata.pdf to determine how the superseded data were derived.
 HV7130
 HV7130_MARKER: H = DRILL HOLE
 HV7130_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7130
 HV7130  HISTORY     - Date     Condition        Report By
 HV7130  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7130  HISTORY     - 1933     MARK NOT FOUND   MDDNR
 HV7130  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV7130
 HV7130                          STATION DESCRIPTION
 HV7130
 HV7130'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7130'ON E SHORE OF RHODE RIVER, ON POINT S OF ENTRANCE TO CADLE CREEK,
 HV7130'ABOUT 1/2 MILE N OF MOUTH OF RHODE RIVER, IN A CULTIVATED FIELD
 HV7130'ABOUT 300 YARDS SE OF STINERS HOUSE AND 15 YARDS BACK FROM EDGE OF
 HV7130'A BLUFF 12 FEET HIGH.
 HV7130'
 HV7130'STATION MARK IS AUGER HOLE IN PINE STUB.
 HV7130'
 HV7130'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7130'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7130'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7130'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7130'IS 4.32 METERS (14.17 FEET) FROM STATION N 39 DEG 51 MIN E.
 HV7130'DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV7130'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 3-INCH LOCUST TREE.
 HV7130'17.19 METERS (56.4 FEET), S 21 DEG 23 MIN W.  CUPOLA ON LARGE
 HV7130'BUILDING ON OPPOSITE SHORE, 1/2 MILE, S 81 DEG 53 MIN W.  S PEAK
 HV7130'OF OLD PACKING HOUSE ON OPPOSITE SHORE, 1/4 MILE, N 84 DEG 06
 HV7130'MIN W.  SE CORNER OF CARR WHARF HOUSE, 3/4 MILE, N 28 DEG 47 MIN
 HV7130'W.  CHIMNEY ON YELLOW HOUSE, 1/4 MILE, N 3 DEG 35 MIN W. CHIMNEY
 HV7130'ON RED-ROOF HOUSE, 300 YARDS, S 52 DEG 28 MIN E.
 HV7130
 HV7130                          STATION RECOVERY (1933)
 HV7130
 HV7130'RECOVERY NOTE BY MD DEPT OF NAT RES 1933
 HV7130'STATION REPORTED LOST BY H.E. COLLINS, ENGINEER.
 HV7130
 HV7130                          STATION RECOVERY (2003)
 HV7130
 HV7130'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7130'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6284 ***********************************************************************
 HV6284  DESIGNATION -  DEM
 HV6284  PID         -  HV6284
 HV6284  STATE/COUNTY-  MD/TALBOT
 HV6284  COUNTRY     -  US
 HV6284  USGS QUAD   -  CLAIBORNE (2016)
 HV6284
 HV6284                         *CURRENT SURVEY CONTROL
 HV6284  ______________________________________________________________________
 HV6284* NAD 83(1991) POSITION- 38 46 37.43490(N) 076 22 24.25656(W)   ADJUSTED
 HV6284* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6284  ______________________________________________________________________
 HV6284  GEOID HEIGHT    -        -33.940 (meters)                     GEOID18
 HV6284  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 HV6284  HORZ ORDER      -  THIRD
 HV6284
 HV6284.The horizontal coordinates were established by classical geodetic methods
 HV6284.and adjusted by the National Geodetic Survey in January 1992.
 HV6284
 HV6284.The orthometric height was scaled from a topographic map.
 HV6284
 HV6284.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6284.GEOID18 height accuracy estimate available here.
 HV6284
 HV6284.Click photographs - Photos may exist for this station.
 HV6284
 HV6284.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6284
 HV6284. The following values were computed from the NAD 83(1991) position.
 HV6284
 HV6284;                    North         East     Units Scale Factor Converg.
 HV6284;SPC MD       -   123,445.557   454,446.548   MT  0.99995133   +0 23 35.8
 HV6284;SPC MD       -   405,004.30  1,490,963.38   sFT  0.99995133   +0 23 35.8
 HV6284;UTM  18      - 4,292,933.341   380,699.708   MT  0.99977526   -0 51 36.9
 HV6284
 HV6284!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6284!SPC MD       -   1.00000505  x   0.99995133  =   0.99995638
 HV6284!UTM  18      -   1.00000505  x   0.99977526  =   0.99978031
 HV6284
 HV6284_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8069992933(NAD 83)
 HV6284
 HV6284                          SUPERSEDED SURVEY CONTROL
 HV6284
 HV6284  NAD 83(1986)-  38 46 37.43163(N)    076 22 24.26999(W) AD(       ) 3
 HV6284  NAD 27      -  38 46 36.99800(N)    076 22 25.44400(W) AD(       ) 3
 HV6284
 HV6284.Superseded values are not recommended for survey control.
 HV6284
 HV6284.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6284.See file dsdata.pdf to determine how the superseded data were derived.
 HV6284
 HV6284_MARKER: DS = TRIANGULATION STATION DISK
 HV6284_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6284_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6284
 HV6284  HISTORY     - Date     Condition        Report By
 HV6284  HISTORY     - 1933     MONUMENTED       CGS
 HV6284  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6284
 HV6284                          STATION DESCRIPTION
 HV6284
 HV6284'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (ERM)
 HV6284'STATION IS ON N POINT OF POPLAR ISLAND ON SOLID GROUND ABOUT 15
 HV6284'METERS INSHORE, IN A THICK GROWTH OF UNDERBRUSH AT EDGE OF TREES,
 HV6284'BEHIND A 4-FOOT BANK, ABOUT 50 METERS W OF MARSH WHICH FORMS
 HV6284'MOST NORTHERLY POINT OF ISLAND.  SHORE LINE AT THIS POINT IS
 HV6284'RAPIDLY WEARING AWAY, AND STATION WILL PROBABLY BE WASHED OUT
 HV6284'WITHIN SIX YEARS AT PRESENT RATE OF EROSION.
 HV6284'
 HV6284'SURFACE MARK IS STANDARD BRONZE DISK IN TILE.
 HV6284'
 HV6284'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE.
 HV6284'
 HV6284'REFERENCE MARK NO.1 IS 17.632 METERS DISTANT FROM THE STATION
 HV6284'S 66 DEG E.
 HV6284'
 HV6284'REFERENCE MARK NO.2 IS 21.471 METERS DISTANT FROM THE STATION
 HV6284'S 30 DEG W.
 HV6284'
 HV6284'HEIGHT OF SIGNAL ABOVE STATION MARK - 6 METERS.
 HV6284
 HV6284                          STATION RECOVERY (1940)
 HV6284
 HV6284'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6284'MARK SEARCHED FOR BUT NOT RECOVERED.  SHORE LINE SHOWS CONSIDERABLE
 HV6284'EROSION, ABOUT 100 YARDS IN THE LAST 7 YEARS.  THIS INFORMATION
 HV6284'FROM CAPTAIN CUMMINGS (KNAPPS NARROWS).
 HV6284'
 HV6284'STATION MARK EVIDENTLY WASHED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3537 ***********************************************************************
 JU3537  DESIGNATION -  DEMON
 JU3537  PID         -  JU3537
 JU3537  STATE/COUNTY-  MD/KENT
 JU3537  COUNTRY     -  US
 JU3537  USGS QUAD   -  MILLINGTON (2016)
 JU3537
 JU3537                         *CURRENT SURVEY CONTROL
 JU3537  ______________________________________________________________________
 JU3537* NAD 83(1991) POSITION- 39 17 13.00584(N) 075 45 33.72465(W)   ADJUSTED
 JU3537* NAVD 88 ORTHO HEIGHT -    22.0   (meters)       72.    (feet) VERTCON3
 JU3537  ______________________________________________________________________
 JU3537  GEOID HEIGHT    -        -33.699 (meters)                     GEOID18
 JU3537  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 JU3537  HORZ ORDER      -  SECOND
 JU3537
 JU3537.The horizontal coordinates were established by classical geodetic methods
 JU3537.and adjusted by the National Geodetic Survey in January 1992.
 JU3537
 JU3537.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3537.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3537
 JU3537.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3537.GEOID18 height accuracy estimate available here.
 JU3537
 JU3537.Click photographs - Photos may exist for this station.
 JU3537
 JU3537.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3537
 JU3537. The following values were computed from the NAD 83(1991) position.
 JU3537
 JU3537;                    North         East     Units Scale Factor Converg.
 JU3537;SPC MD       -   180,588.526   507,030.142   MT  0.99997554   +0 46 43.2
 JU3537;SPC MD       -   592,480.86  1,663,481.39   sFT  0.99997554   +0 46 43.2
 JU3537;UTM  18      - 4,348,894.888   434,511.029   MT  0.99965281   -0 28 51.1
 JU3537
 JU3537!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3537!SPC MD       -   1.00000184  x   0.99997554  =   0.99997738
 JU3537!UTM  18      -   1.00000184  x   0.99965281  =   0.99965465
 JU3537
 JU3537:                Primary Azimuth Mark                     Grid Az
 JU3537:SPC MD       -  QUILLEN                                  355 18 33.6
 JU3537:UTM  18      -  QUILLEN                                  356 34 07.9
 JU3537
 JU3537_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3451148894(NAD 83)
 JU3537
 JU3537|---------------------------------------------------------------------|
 JU3537| PID    Reference Object                     Distance      Geod. Az  |
 JU3537|                                                           dddmmss.s |
 JU3537| JU3536 BDY MON 57 DE MD                     15.104 METERS 14627     |
 JU3537| JU3434 ROBINSON AZIMUTH MARK               APPROX. 2.1 KM 1534445.9 |
 JU3537| CB1410 DEMON RM 1                                         25223     |
 JU3537| CB1412 DEMON RM 3                           56.252 METERS 29648     |
 JU3537| JU3548 BENNETT AZIMUTH MARK                APPROX. 1.8 KM 3294302.8 |
 JU3537| CB1411 DEMON RM 2                           23.693 METERS 33711     |
 JU3537| JU3541 QUILLEN                             APPROX. 3.2 KM 3560516.8 |
 JU3537|---------------------------------------------------------------------|
 JU3537
 JU3537                          SUPERSEDED SURVEY CONTROL
 JU3537
 JU3537  NAD 83(1986)-  39 17 12.99732(N)    075 45 33.73388(W) AD(       ) 2
 JU3537  NAD 27      -  39 17 12.59760(N)    075 45 34.97610(W) AD(       ) 2
 JU3537  NGVD 29 (07/19/86)   22.2    (m)           73.     (f) VERT ANG       
 JU3537
 JU3537.Superseded values are not recommended for survey control.
 JU3537
 JU3537.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3537.See file dsdata.pdf to determine how the superseded data were derived.
 JU3537
 JU3537_MARKER: DS = TRIANGULATION STATION DISK
 JU3537_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3537_STAMPING: DEMON 1961
 JU3537_MARK LOGO: CGS
 JU3537_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3537+STABILITY: SURFACE MOTION
 JU3537
 JU3537  HISTORY     - Date     Condition        Report By
 JU3537  HISTORY     - 1961     MONUMENTED       CGS
 JU3537
 JU3537                          STATION DESCRIPTION
 JU3537
 JU3537'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3537'THE STATION IS LOCATED IN A HEAVY WOODED AREA, 4-1/2 MILES
 JU3537'EAST-SOUTHEAST OF MILLINGTON, MARYLAND, 6.0 MILES WEST-NORTHWEST
 JU3537'OF KENTON, DELAWARE AND ON PROPERTY OWNED BY THE MILLINGTON WILD
 JU3537'LIFE DEMONSTRATION AREA.
 JU3537'
 JU3537'TO REACH THE STATION FROM THE CROSSROADS IN MASSEY, GO EAST ON
 JU3537'A PAVED ROAD FOR 3.1 MILES TO A GRAVELED SIDE ROAD RIGHT, TURN
 JU3537'RIGHT AND GO SOUTH ON THE GRAVELED ROAD FOR 0.7 MILE TO A GRAVELED
 JU3537'DRIVEWAY LEFT, TURN LEFT AND GO EAST ON THE DRIVEWAY FOR 0.1 MILE
 JU3537'TO THE RESIDENCE OF MR. FRED BERINCHE, CONTINUE THROUGH THE YARD
 JU3537'AND BEAR RIGHT THROUGH THE GATE, CONTINUE SOUTH-SOUTHEAST ACROSS
 JU3537'THE PASTURE FIELD FOR 0.15 MILE TO A GAP IN THE FENCE LINE,
 JU3537'CONTINUE THROUGH THE GAP AND GO SOUTH AND SOUTHEAST ON A DIM
 JU3537'WINDING WOODS ROAD FOR 0.5 MILE TO THE STATION.
 JU3537'
 JU3537'THE STATION MARK IS A STANDARD DISK STAMPED DEMON 1961, SET IN
 JU3537'TOP OF A SQUARE CONCRETE MONUMENT WHICH IS 3 INCHES BELOW THE
 JU3537'GROUND SURFACE.  IT IS 5.8 FEET WEST-SOUTHWEST OF A STANDARD METAL
 JU3537'WITNESS POST AND MARKER, 22.3 FEET WEST OF A 10-INCH TRIANGULAR
 JU3537'BLAZED WHITE OAK TREE AND 35.3 FEET SOUTHEAST OF A 13-INCH
 JU3537'TRIANGULAR BLAZED RED OAK TREE.
 JU3537'
 JU3537'REFERENCE MARK 1 IS A STANDARD DISK STAMPED DEMON NO 1 1961,
 JU3537'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 2 INCHES
 JU3537'ABOVE THE GROUND SURFACE.  IT IS 55.6 FEET SOUTHWEST OF THE
 JU3537'13-INCH TRIANGULAR BLAZED RED OAK TREE, 85.0 FEET WEST OF THE
 JU3537'WITNESS POST AND 100.6 FEET WEST OF THE 10-INCH TRIANGULAR BLAZED
 JU3537'WHITE OAK TREE.
 JU3537'
 JU3537'REFERENCE MARK 2 IS A STANDARD DISK STAMPED DEMON NO 2 1961,
 JU3537'SET IN THE TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 3
 JU3537'INCHES ABOVE THE GROUND SURFACE.  IT IS 56.0 FEET NORTHEAST OF
 JU3537'THE 13-INCH TRIANGULAR BLAZED RED OAK TREE, 77.5 FEET NORTHEAST
 JU3537'OF THE WITNESS POST AND 86.6 FEET NORTH OF THE 10-INCH TRIANGULAR
 JU3537'BLAZED RED OAK TREE.
 JU3537'
 JU3537'REFERENCE MARK 3 IS A STANDARD DISK STAMPED DEMON NO 3 1961,
 JU3537'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 1 INCH
 JU3537'ABOVE THE GROUND SURFACE.  IT IS 1.6 FEET EAST-SOUTHEAST OF A
 JU3537'STANDARD METAL WITNESS POST, 21.0 FEET NORTH OF THE APPROXIMATE
 JU3537'CENTER OF A DIM WOODS ROAD, LEADING TO THE STATION AND 150.3 FEET
 JU3537'WEST-NORTHWEST OF THE 13-INCH TRIANGULAR BLAZED RED OAK TREE.
 JU3537'
 JU3537'BOUNDARY MONUMENT NO. 57 IS A 12 X 12 INCH GRANITE STONE MARKED
 JU3537'M AND P AND PROJECTS ABOUT 25 INCHES ABOVE THE GROUND SURFACE.  THE
 JU3537'MONUMENT IS PAINTED YELLOW FROM THE GROUND SURFACE UP.  THE
 JU3537'MONUMENT IS IN GOOD CONDITION BUT IS LEANING SLIGHTLY EAST.  IT
 JU3537'IS 1.0 FOOT SOUTHEAST OF A YELLOW METAL POST, 43.6 FEET
 JU3537'SOUTH-SOUTHWEST OF THE 10-INCH TRIANGULAR BLAZED WHITE OAK
 JU3537'TREE AND 48.3 FEET SOUTH OF THE STANDARD METAL WITNESS POST.
 JU3537'
 JU3537'HEIGHT OF LIGHT ABOVE STATION MARK 33.90 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7261 ***********************************************************************
 JV7261  DESIGNATION -  DENBEIGH
 JV7261  PID         -  JV7261
 JV7261  STATE/COUNTY-  MD/QUEEN ANNES
 JV7261  COUNTRY     -  US
 JV7261  USGS QUAD   -  CENTREVILLE (2017)
 JV7261
 JV7261                         *CURRENT SURVEY CONTROL
 JV7261  ______________________________________________________________________
 JV7261* NAD 83(2011) POSITION- 39 01 05.16801(N) 076 04 40.15555(W)   ADJUSTED
 JV7261* NAD 83(2011) ELLIP HT-   -16.948 (meters)        (06/27/12)   ADJUSTED
 JV7261* NAD 83(2011) EPOCH   -  2010.00
 JV7261* NAVD 88 ORTHO HEIGHT -    16.925 (meters)       55.53  (feet) ADJUSTED
 JV7261  ______________________________________________________________________
 JV7261  GEOID HEIGHT    -        -33.899 (meters)                     GEOID18
 JV7261  NAD 83(2011) X  -  1,193,887.828 (meters)                     COMP
 JV7261  NAD 83(2011) Y  - -4,816,281.174 (meters)                     COMP
 JV7261  NAD 83(2011) Z  -  3,993,867.929 (meters)                     COMP
 JV7261  LAPLACE CORR    -         -4.37  (seconds)                    DEFLEC18
 JV7261  DYNAMIC HEIGHT  -         16.915 (meters)       55.50  (feet) COMP
 JV7261  MODELED GRAVITY -    980,080.0   (mgal)                       NAVD 88
 JV7261
 JV7261  VERT ORDER      -  SECOND    CLASS I
 JV7261
 JV7261  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7261  Standards:
 JV7261         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7261            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7261  -------------------------------------------------------------------
 JV7261  NETWORK    2.46   3.72           0.87   1.11   1.90     -0.14024692
 JV7261  -------------------------------------------------------------------
 JV7261  Click here for local accuracies and other accuracy information.
 JV7261
 JV7261.The horizontal coordinates were established by GPS observations
 JV7261.and adjusted by the National Geodetic Survey in June 2012.
 JV7261
 JV7261.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7261.been affixed to the stable North American tectonic plate. See 
 JV7261.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7261
 JV7261.The horizontal coordinates are valid at the epoch date displayed above
 JV7261.which is a decimal equivalence of Year/Month/Day.
 JV7261
 JV7261.The orthometric height was determined by differential leveling and
 JV7261.adjusted by the NATIONAL GEODETIC SURVEY
 JV7261.in July 1996.
 JV7261
 JV7261.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7261.GEOID18 height accuracy estimate available here.
 JV7261
 JV7261.Click photographs - Photos may exist for this station.
 JV7261
 JV7261.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7261
 JV7261.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7261
 JV7261.The ellipsoidal height was determined by GPS observations
 JV7261.and is referenced to NAD 83.
 JV7261
 JV7261.The dynamic height is computed by dividing the NAVD 88
 JV7261.geopotential number by the normal gravity value computed on the
 JV7261.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7261.degrees latitude (g = 980.6199 gals.).
 JV7261
 JV7261.The modeled gravity was interpolated from observed gravity values.
 JV7261
 JV7261. The following values were computed from the NAD 83(2011) position.
 JV7261
 JV7261;                    North         East     Units Scale Factor Converg.
 JV7261;SPC MD       -   150,419.110   479,859.574   MT  0.99995292   +0 34 43.6
 JV7261;SPC MD       -   493,500.03  1,574,339.29   sFT  0.99995292   +0 34 43.6
 JV7261;UTM  18      - 4,319,337.972   406,692.223   MT  0.99970720   -0 40 43.0
 JV7261
 JV7261!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7261!SPC MD       -   1.00000266  x   0.99995292  =   0.99995558
 JV7261!UTM  18      -   1.00000266  x   0.99970720  =   0.99970986
 JV7261
 JV7261_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0669219337(NAD 83)
 JV7261
 JV7261                          SUPERSEDED SURVEY CONTROL
 JV7261
 JV7261  NAD 83(2007)-  39 01 05.16823(N)    076 04 40.15628(W) AD(2002.00) 1
 JV7261  ELLIP H (04/02/09)  -16.917  (m)                       GP(2002.00) 4 1
 JV7261  NAD 83(1991)-  39 01 05.16828(N)    076 04 40.15652(W) AD(       ) 1
 JV7261  ELLIP H (10/15/07)  -16.915  (m)                       GP(       ) 4 1
 JV7261  NAVD 88              16.93   (m)           55.5    (f) LEVELING    3  
 JV7261
 JV7261.Superseded values are not recommended for survey control.
 JV7261
 JV7261.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7261.See file dsdata.pdf to determine how the superseded data were derived.
 JV7261
 JV7261_MARKER: DD = SURVEY DISK
 JV7261_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7261_STAMPING: DENBEIGH 1989
 JV7261_MARK LOGO: MDSHA
 JV7261_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7261_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7261+STABILITY: SURFACE MOTION
 JV7261_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7261+SATELLITE: SATELLITE OBSERVATIONS - August 23, 2014
 JV7261
 JV7261  HISTORY     - Date     Condition        Report By
 JV7261  HISTORY     - 1989     MONUMENTED       MDSHA
 JV7261  HISTORY     - 19910301 GOOD             MDSHA
 JV7261  HISTORY     - 20020306 GOOD             USPSQD
 JV7261  HISTORY     - 20020529 GOOD             MDSHA
 JV7261  HISTORY     - 20060318 GOOD             USPSQD
 JV7261  HISTORY     - 20140823 GOOD             USPSQD
 JV7261
 JV7261                          STATION DESCRIPTION
 JV7261
 JV7261'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JV7261'THE MARKER IS LOCATED ABOUT 1.95 MI (3.14 KM) SOUTH-SOUTHEAST OF
 JV7261'CENTERVILLE, 5.3 MI (8.5 KM) NORTH OF WYE MILLS AND ALONG A FARM
 JV7261'ENTRANCE ROAD.  IT IS ON THE PROPERTY OF JOHN MORRIS.
 JV7261'
 JV7261'TO REACH THE MARKER FROM THE INTERSECTION OF U.S.HIGHWAY 301 AND STATE
 JV7261'HIGHWAY 213, GO NORTH ON STATE HIGHWAY 213 FOR 0.2 MI (0.3 KM) TO A
 JV7261'FARM ENTRANCE ON THE LEFT.  TURN LEFT AND GO WEST ON THE FARM
 JV7261'ENTRANCED ROAD 0.1 MI (0.2 KM) TO A METAL GATE AND THE MARKER ON THE
 JV7261'LEFT.
 JV7261'
 JV7261'THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION
 JV7261'SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT
 JV7261'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 18.4 FT (5.6 M)
 JV7261'SOUTH OF THE CENTER OF THE FARM ENTRANCE ROAD, 4.0 FT (1.2 M)
 JV7261'SOUTHEAST OF THE CORNER FENCE POST ON THE SOUTH SIDE OF THE GATE AND
 JV7261'26.0 FT (7.9 M) SOUTHEAST OF A POWERLINE POLE NUMBERED 33416 17030.
 JV7261
 JV7261                          STATION RECOVERY (2002)
 JV7261
 JV7261'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV7261'METAL GATE REMOVED, CREOSOTED POSTS REMAIN. REFERENCED POWER POLE
 JV7261'REMOVED. POWER LINES NOW UNDER GROUND.
 JV7261
 JV7261                          STATION RECOVERY (2002)
 JV7261
 JV7261'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 JV7261'RECOVERED AS DESCRIBED WITH THE FOLLOWING CORRECTIONS.  THE METAL
 JV7261'GATE, FENCE LINE, AND POWER POLE ARE NOW GONE.  THE MARK IS NEAR THE
 JV7261'CORNER OF A POND AND A PLOWED FIELD.  FOUR FOOT TALL CUT-OFF TELEPHONE
 JV7261'POLES ARE OLD GATE POSTS.  SINCE THE LAST DESCRIPTION AN UNDERGROUND
 JV7261'POWER LINE WAS ESTABLISHED ADJACENT TO THE MONUMENT.  THE CURRENT
 JV7261'ELEVATION IS BELIEVED TO BE IN ERROR BY APPROXIMATELY 0.09 FT LOW.
 JV7261
 JV7261                          STATION RECOVERY (2006)
 JV7261
 JV7261'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JV7261'RECOVERED IN GOOD CONDITION.
 JV7261
 JV7261                          STATION RECOVERY (2014)
 JV7261
 JV7261'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV7261'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7262 ***********************************************************************
 JV7262  DESIGNATION -  DENBEIGH AZ MK
 JV7262  PID         -  JV7262
 JV7262  STATE/COUNTY-  MD/QUEEN ANNES
 JV7262  COUNTRY     -  US
 JV7262  USGS QUAD   -  CENTREVILLE (2017)
 JV7262
 JV7262                         *CURRENT SURVEY CONTROL
 JV7262  ______________________________________________________________________
 JV7262* NAD 83(1986) POSITION- 39 01 05.     (N) 076 04 46.     (W)   SCALED
 JV7262* NAVD 88 ORTHO HEIGHT -    19.653 (meters)       64.48  (feet) ADJUSTED
 JV7262  ______________________________________________________________________
 JV7262  GEOID HEIGHT    -        -33.895 (meters)                     GEOID18
 JV7262  DYNAMIC HEIGHT  -         19.642 (meters)       64.44  (feet) COMP
 JV7262  MODELED GRAVITY -    980,080.1   (mgal)                       NAVD 88
 JV7262
 JV7262  VERT ORDER      -  SECOND    CLASS I
 JV7262
 JV7262.The horizontal coordinates were scaled from a map and have
 JV7262.an estimated accuracy of +/- 6 seconds.
 JV7262
 JV7262.The orthometric height was determined by differential leveling and
 JV7262.adjusted by the NATIONAL GEODETIC SURVEY
 JV7262.in July 1996.
 JV7262
 JV7262.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7262.GEOID18 height accuracy estimate available here.
 JV7262
 JV7262.Click photographs - Photos may exist for this station.
 JV7262
 JV7262.The dynamic height is computed by dividing the NAVD 88
 JV7262.geopotential number by the normal gravity value computed on the
 JV7262.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7262.degrees latitude (g = 980.6199 gals.).
 JV7262
 JV7262.The modeled gravity was interpolated from observed gravity values.
 JV7262
 JV7262;                    North         East    Units  Estimated Accuracy
 JV7262;SPC MD       -   150,410.      479,720.      MT  (+/- 180 meters Scaled)
 JV7262
 JV7262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ065193(NAD 83)
 JV7262
 JV7262                          SUPERSEDED SURVEY CONTROL
 JV7262
 JV7262.No superseded survey control is available for this station.
 JV7262
 JV7262_MARKER: DD = SURVEY DISK
 JV7262_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7262_STAMPING: DENBIEGH AZ 1989
 JV7262_MARK LOGO: MDSHA
 JV7262_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV7262_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7262+STABILITY: SURFACE MOTION
 JV7262_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7262+SATELLITE: SATELLITE OBSERVATIONS - August 23, 2014
 JV7262
 JV7262  HISTORY     - Date     Condition        Report By
 JV7262  HISTORY     - 1989     MONUMENTED       MDSHA
 JV7262  HISTORY     - 19910301 GOOD             MDSHA
 JV7262  HISTORY     - 20020306 GOOD             USPSQD
 JV7262  HISTORY     - 20060318 GOOD             USPSQD
 JV7262  HISTORY     - 20140823 GOOD             USPSQD
 JV7262
 JV7262                          STATION DESCRIPTION
 JV7262
 JV7262'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JV7262'THE MARKER IS LOCATED ABOUT 1.95 MI (3.14 KM) SOUTH-SOUTHEAST OF
 JV7262'CENTERVILLE, 5.35 MI (8.61 KM) NORTH OF WYE MILLS AND ALONG A FARM
 JV7262'ENTRANCE ROAD.  IT IS ON THE PROPERTY OF JOHN MORRIS.
 JV7262'
 JV7262'TO REACH THE MARKER FROM THE INTERSECTION OF U.S.HIGHWAY 301 AND STATE
 JV7262'HIGHWAY 213, GO NORTH ON STATE HIGHWAY 213 FOR 0.2 MI (0.3 KM) TO A
 JV7262'FARM ENTRANCE ROAD ON THE LEFT.  TURN LEFT AND GO WEST ON THE FARM
 JV7262'ROAD, PASSING THROUGH A METAL GATE, FOR 0.25 MI (0.40 KM)  TO THE
 JV7262'MARKER ON THE LEFT.
 JV7262'
 JV7262'THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION
 JV7262'SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT
 JV7262'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 14.5 FT (4.4 M)
 JV7262'SOUTH OF THE CENTER OF THE FARM ROAD, 5.0 FT (1.5 M) SOUTHEAST OF A
 JV7262'FENCE CORNER AND 5.5 FT (1.7 M) SOUTHEAST OF A POWERLINE POLE NUMBERED
 JV7262'33340 17046.
 JV7262
 JV7262                          STATION RECOVERY (2002)
 JV7262
 JV7262'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV7262'METAL GATE REMOVED, CREOSOTED POSTS REMAIN. REFERENCED POWER POLE
 JV7262'REMOVED AND REPLACED BY TRANSFORMER BOX WITH SAME NUMBER. REFERENCED
 JV7262'FENCE CORNER HAS BEEN REMOVED.
 JV7262
 JV7262                          STATION RECOVERY (2006)
 JV7262
 JV7262'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JV7262'RECOVERED IN GOOD CONDITION.
 JV7262
 JV7262                          STATION RECOVERY (2014)
 JV7262
 JV7262'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV7262'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5663 ***********************************************************************
 JV5663  DESIGNATION -  DENISON
 JV5663  PID         -  JV5663
 JV5663  STATE/COUNTY-  MD/BALTIMORE
 JV5663  COUNTRY     -  US
 JV5663  USGS QUAD   -  COCKEYSVILLE (2016)
 JV5663
 JV5663                         *CURRENT SURVEY CONTROL
 JV5663  ______________________________________________________________________
 JV5663* NAD 83(1991) POSITION- 39 26 52.36617(N) 076 37 36.43403(W)   ADJUSTED
 JV5663* NAVD 88 ORTHO HEIGHT -   155.    (meters)      509.    (feet) SCALED
 JV5663  ______________________________________________________________________
 JV5663  GEOID HEIGHT    -        -32.457 (meters)                     GEOID18
 JV5663  LAPLACE CORR    -         -4.26  (seconds)                    DEFLEC18
 JV5663  HORZ ORDER      -  FIRST
 JV5663
 JV5663.The horizontal coordinates were established by classical geodetic methods
 JV5663.and adjusted by the National Geodetic Survey in January 1992.
 JV5663
 JV5663.The orthometric height was scaled from a topographic map.
 JV5663
 JV5663.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5663.GEOID18 height accuracy estimate available here.
 JV5663
 JV5663.Click photographs - Photos may exist for this station.
 JV5663
 JV5663.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5663
 JV5663. The following values were computed from the NAD 83(1991) position.
 JV5663
 JV5663;                    North         East     Units Scale Factor Converg.
 JV5663;SPC MD       -   197,793.898   432,125.167   MT  0.99999963   +0 14 03.3
 JV5663;SPC MD       -   648,928.81  1,417,730.65   sFT  0.99999963   +0 14 03.3
 JV5663;UTM  18      - 4,367,742.960   360,022.365   MT  0.99984124   -1 02 01.6
 JV5663
 JV5663!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5663!SPC MD       -   0.99998081  x   0.99999963  =   0.99998044
 JV5663!UTM  18      -   0.99998081  x   0.99984124  =   0.99982205
 JV5663
 JV5663:                Primary Azimuth Mark                     Grid Az
 JV5663:SPC MD       -  DENISON AZ MK                            175 38 15.2
 JV5663:UTM  18      -  DENISON AZ MK                            176 54 20.1
 JV5663
 JV5663_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6002267742(NAD 83)
 JV5663
 JV5663|---------------------------------------------------------------------|
 JV5663| PID    Reference Object                     Distance      Geod. Az  |
 JV5663|                                                           dddmmss.s |
 JV5663| CA9337 DENISON RM 1                         27.828 METERS 00011     |
 JV5663| CA9336 DENISON AZ MK                                      1755218.5 |
 JV5663| JV5447 TOWSON SACRED HEART LTNING ROD      APPROX. 4.3 KM 1761032.3 |
 JV5663| CA9338 DENISON RM 2                         67.879 METERS 25339     |
 JV5663| JV5651 TEXAS ST JOSEPHS CATH CH CROSS      APPROX. 2.0 KM 3283056.3 |
 JV5663|---------------------------------------------------------------------|
 JV5663
 JV5663                          SUPERSEDED SURVEY CONTROL
 JV5663
 JV5663  NAD 83(1986)-  39 26 52.36252(N)    076 37 36.44066(W) AD(       ) 1
 JV5663  NAD 27      -  39 26 51.98000(N)    076 37 37.54800(W) AD(       ) 1
 JV5663
 JV5663.Superseded values are not recommended for survey control.
 JV5663
 JV5663.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5663.See file dsdata.pdf to determine how the superseded data were derived.
 JV5663
 JV5663_MARKER: DS = TRIANGULATION STATION DISK
 JV5663_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5663_STAMPING: DENISON 1938
 JV5663_MARK LOGO: CGS
 JV5663_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5663+STABILITY: SURFACE MOTION
 JV5663
 JV5663  HISTORY     - Date     Condition        Report By
 JV5663  HISTORY     - 1938     MONUMENTED       CGS
 JV5663  HISTORY     - 1954     GOOD             MDBCSM
 JV5663  HISTORY     - 1957     MARK NOT FOUND   USGS
 JV5663  HISTORY     - 1984     GOOD             USPSQD
 JV5663  HISTORY     - 19950819 GOOD             USPSQD
 JV5663  HISTORY     - 19951018 MARK NOT FOUND   USPSQD
 JV5663
 JV5663                          STATION DESCRIPTION
 JV5663
 JV5663'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV5663'THE STATION IS ON A BARE PROMINENT HILL TO THE NE OF TIMONIUM
 JV5663'FAIR GROUNDS ON PROPERTY OF CHARLES C. DENISON.
 JV5663'
 JV5663'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV5663'BRONZE DISKS SET IN CONCRETE.
 JV5663'
 JV5663'THE AZIMUTH MARK IS ON THE W SIDE OF YORK ROAD JUST S OF CINDER
 JV5663'ROAD.
 JV5663'
 JV5663'STATIONS TOWSON TANK, KAUFMAN, TEXAS, BONNIE BLINK ARE CLEARLY
 JV5663'VISIBLE FROM THE GROUND.
 JV5663'
 JV5663'TOP OF MARK BELOW GROUND 1 FOOT.
 JV5663'
 JV5663'TO REACH FROM BALTIMORE, GO N ON YORK ROAD THROUGH TOWSON TO
 JV5663'CINDER ROAD AT TIMONIUM, 0.47 MILE, N ON YORK ROAD TO PRIVATE ROAD
 JV5663'TO MR. DENISONS HOUSE.  A FIELD ROAD RUNS NE TO THE TOP OF THE
 JV5663'HILL.  THE STATION MARK IS SUB-SURFACED AS FIELD IS UNDER
 JV5663'CULTIVATION.
 JV5663'
 JV5663'REFERENCE MARK NO.1 IS AT THE BASE OF AN APPLE TREE TO THE N OF
 JV5663'THE HILLTOP.  REFERENCE MARK NO.2 IS IN THE FENCE LINE TO THE W
 JV5663'OF THE HILLTOP.
 JV5663'
 JV5663'HEIGHT OF LIGHT ABOVE STATION MARK 2.22 METERS.
 JV5663
 JV5663                          STATION RECOVERY (1954)
 JV5663
 JV5663'RECOVERY NOTE BY MD BUR SURV AND MAPS 1954 (TLC)
 JV5663'STATION AND MARKS WERE FOUND IN GOOD CONDITION, BUT ALL IN DANGER
 JV5663'OF DESTRUCTION AS A HOUSING DEVELOPMENT IS UNDER CONSTRUCTION NEAR
 JV5663'THE STATION.
 JV5663
 JV5663                          STATION RECOVERY (1957)
 JV5663
 JV5663'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 JV5663'HOUSE NOW OCCUPIES SITE OF THE STATION.  WHEN BASEMENT WAS DUG
 JV5663'STATION WAS PROBABLY DESTROYED.
 JV5663
 JV5663                          STATION RECOVERY (1984)
 JV5663
 JV5663'RECOVERY NOTE BY US POWER SQUADRON 1984 (LP)
 JV5663'THIS MARK WAS REPORTED ON IN 1957 BY, U.S.G.S. 1957 AS BEING
 JV5663'COVERED BY A HOUSE - - THIS WAS CHECKED AS BEING AFFIRMITIVE.
 JV5663'
 JV5663'THIS IS KNOWN AS 6 YORKVIEW DR. TIMONIUM, MD 21093.
 JV5663
 JV5663                          STATION RECOVERY (1995)
 JV5663
 JV5663'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5663'RECOVERED IN GOOD CONDITION.
 JV5663
 JV5663                          STATION RECOVERY (1995)
 JV5663
 JV5663'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5663'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5662 ***********************************************************************
 JV5662  DESIGNATION -  DENISON 2
 JV5662  PID         -  JV5662
 JV5662  STATE/COUNTY-  MD/BALTIMORE
 JV5662  COUNTRY     -  US
 JV5662  USGS QUAD   -  COCKEYSVILLE (2016)
 JV5662
 JV5662                         *CURRENT SURVEY CONTROL
 JV5662  ______________________________________________________________________
 JV5662* NAD 83(1991) POSITION- 39 26 52.81656(N) 076 37 37.95012(W)   ADJUSTED
 JV5662* NAVD 88 ORTHO HEIGHT -   154.    (meters)      505.    (feet) SCALED
 JV5662  ______________________________________________________________________
 JV5662  GEOID HEIGHT    -        -32.456 (meters)                     GEOID18
 JV5662  LAPLACE CORR    -         -4.27  (seconds)                    DEFLEC18
 JV5662  HORZ ORDER      -  SECOND
 JV5662
 JV5662.The horizontal coordinates were established by classical geodetic methods
 JV5662.and adjusted by the National Geodetic Survey in January 1992.
 JV5662
 JV5662.The orthometric height was scaled from a topographic map.
 JV5662
 JV5662.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5662.GEOID18 height accuracy estimate available here.
 JV5662
 JV5662.Click photographs - Photos may exist for this station.
 JV5662
 JV5662.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5662
 JV5662. The following values were computed from the NAD 83(1991) position.
 JV5662
 JV5662;                    North         East     Units Scale Factor Converg.
 JV5662;SPC MD       -   197,807.640   432,088.861   MT  0.99999965   +0 14 02.3
 JV5662;SPC MD       -   648,973.90  1,417,611.54   sFT  0.99999965   +0 14 02.3
 JV5662;UTM  18      - 4,367,757.499   359,986.377   MT  0.99984137   -1 02 02.6
 JV5662
 JV5662!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5662!SPC MD       -   0.99998097  x   0.99999965  =   0.99998062
 JV5662!UTM  18      -   0.99998097  x   0.99984137  =   0.99982234
 JV5662
 JV5662:                Primary Azimuth Mark                     Grid Az
 JV5662:SPC MD       -  TIMON                                    199 36 37.8
 JV5662:UTM  18      -  TIMON                                    200 52 42.7
 JV5662
 JV5662_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5998667757(NAD 83)
 JV5662
 JV5662|---------------------------------------------------------------------|
 JV5662| PID    Reference Object                     Distance      Geod. Az  |
 JV5662|                                                           dddmmss.s |
 JV5662| JV5453 TOWSON METHODIST CHURCH SPIRE       APPROX. 4.5 KM 1461021.1 |
 JV5662| JV1257 TIMON                               APPROX. 1.5 KM 1995040.1 |
 JV5662| CA9338 DENISON RM 2                         43.826 METERS 22106     |
 JV5662| CA9339 DENISON RM 3                         27.475 METERS 27831     |
 JV5662| JV5654 MAYS CHAPEL BALTIMORE GAS MAST      APPROX. 3.6 KM 2821439.7 |
 JV5662|---------------------------------------------------------------------|
 JV5662
 JV5662                          SUPERSEDED SURVEY CONTROL
 JV5662
 JV5662  NAD 83(1986)-  39 26 52.81294(N)    076 37 37.95699(W) AD(       ) 2
 JV5662  NAD 27      -  39 26 52.42980(N)    076 37 39.06560(W) AD(       ) 2
 JV5662
 JV5662.Superseded values are not recommended for survey control.
 JV5662
 JV5662.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5662.See file dsdata.pdf to determine how the superseded data were derived.
 JV5662
 JV5662_MARKER: DS = TRIANGULATION STATION DISK
 JV5662_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5662_STAMPING: DENISON 2 1959
 JV5662_MARK LOGO: CGS
 JV5662_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5662+STABILITY: SURFACE MOTION
 JV5662
 JV5662  HISTORY     - Date     Condition        Report By
 JV5662  HISTORY     - 1959     MONUMENTED       CGS
 JV5662  HISTORY     - 1976     GOOD             NGS
 JV5662  HISTORY     - 1984     GOOD             USPSQD
 JV5662
 JV5662                          STATION DESCRIPTION
 JV5662
 JV5662'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV5662'STATION IS LOCATED ON THE WEST SLOPE OF HILL IN A LAWN AT THE REAR
 JV5662'OF MR. VOSSS RESIDENCE ABOUT 0.75 MILES NORTH OF TIMONIUM AND
 JV5662'0.3 MILE NORTHWEST OF MARYLAND STATE FAIR GROUNDS, 72-1/2 FEET
 JV5662'SOUTHWEST OF SOUTHWEST CORNER OF HOUSE, 92 FEET EAST OF A FENCE,
 JV5662'101-1/2 FEET NORTHEAST OF POWER POLE NO. 4 AND 40 FEET NORTH OF
 JV5662'PROPERTY LINE.  THE STATION MARK IS A STANDARD DISK IN A 12 BY
 JV5662'12 CONCRETE MONUMENT STAMPED DENISON 2 1959.  THE MONUMENT IS
 JV5662'2 INCHES BELOW THE SURFACE OF THE GROUND.
 JV5662'
 JV5662'TO REACH FROM THE JUNCTION OF BALTO BELTWAY AND U.S. HIGHWAY
 JV5662'NO. 111 (NORTH) GO NORTH ON U.S. HIGHWAY NO. 111 FOR 1.25 MILES TO
 JV5662'RAMP ON RIGHT BEFORE REACHING OVERPASS.  TURN RIGHT AND GO DOWN
 JV5662'RAMP FOR 0.15 MILE TO INTERSECTION OF TIMONIUM RD.  TURN RIGHT
 JV5662'AND GO EASTERLY ON TIMONIUM RD. FOR 0.4 MILE TO THE INTERSECTION
 JV5662'OF YORK RD.
 JV5662'
 JV5662'TURN LEFT AND GO NORTHERLY ON YORK RD. FOR 0.4 MILE TO A SIDE
 JV5662'ROAD ON RIGHT PAST THE CREST OF HILL.  TURN RIGHT ON ROUNDRIDGE ROAD
 JV5662'FOR 0.25 MILE TO INTERSECTION OF WEST RIDGE ROAD, TURN LEFT ON WEST
 JV5662'RIDGE ROAD AND CONTINUE FOR 0.05 MILE TO YORK DRIVE.  TURN
 JV5662'LEFT ON YORK DRIVE AND CONTINUE FOR 0.1 MILE TO CIRCLE AT FRONT
 JV5662'OF MR. VOSSS PROPERTY.  CONTINUE ON FOOT AROUND SOUTH SIDE OF
 JV5662'MR. VOSSS HOUSE TO STATION AS DESCRIBED.
 JV5662'
 JV5662'REFERENCE MARK NO. 2 IS A STANDARD DISK SET IN A 12 BY 12 INCH
 JV5662'CONCRETE MONUMENT AND PROJECTS 4 INCHES FROM THE GROUND.  THE
 JV5662'DISK IS STAMPED DENSION NO 2 1938.  IT IS 65 FEET SOUTH OF
 JV5662'POWERLINE POLE NO. 4 AND 2-1/2 FEET EAST OF FENCELINE.
 JV5662'
 JV5662'REFERENCE MARK NO. 3 IS A STANDARD DISK SET IN A 12 BY 12 INCH
 JV5662'CONCRETE MONUMENT AND IS 2 INCHES BELOW THE SURFACE OF THE
 JV5662'GROUND.  THE DISK IS STAMPED DENISON NO 3 1959.  IT IS 2-1/2
 JV5662'FEET EAST OF FENCELINE AND 58 FEET NORTH OF POWERLINE POLE NO. 4.
 JV5662'
 JV5662'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV5662
 JV5662                          STATION RECOVERY (1976)
 JV5662
 JV5662'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JV5662'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV5662'CONDITION AS PREVIOUSLY DESCRIBED.
 JV5662'
 JV5662'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5662'1/2 MILE NORTH OF TIMONIUM.
 JV5662
 JV5662                          STATION RECOVERY (1984)
 JV5662
 JV5662'RECOVERY NOTE BY US POWER SQUADRON 1984 (LP)
 JV5662'STATION RECOVERED GOOD.
 JV5662'
 JV5662'REFERENCE MARK NO. 2 WAS LOCATED AT 8 YORKVIEW DR. PROPERTY OF
 JV5662'G. VOSS.  OBTAINED PERMISSION TO LOOK FOR MARK WHICH WAS FOUND IN
 JV5662'GOOD CONDITION.  MARK PROJECTS APPROX. 4-5 INCHES FROM GROUND - 65
 JV5662'FEET SOUTH OF POWERLINE POLE NO. 4 AND 2-1/2 FEET EAST OF POST
 JV5662'WHICH IS THE REMAINS OF A FENCE.
 JV5662'
 JV5662'REFERENCE MARK NO. 3 WAS LOCATED AT 8 YORKVIEW DR. PROPERTY OF G.
 JV5662'VOSS.  OBTAINED PERMISSION TO LOOK FOR MARK WHICH WAS FOUND IN
 JV5662'GOOD CONDITION.  MARK IS STAMPED DENISON NO. 3 1959 AND IS LOCATED
 JV5662'2-1/2 FT. EAST OF POST WHICH IS REMAINS OF A FENCE, AND 58
 JV5662'FEET NORTH OF POWERLINE POLE NO. 4 - JUST BELOW SURFACE OF
 JV5662'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2402 ***********************************************************************
 JV2402  DESIGNATION -  DENNIS
 JV2402  PID         -  JV2402
 JV2402  STATE/COUNTY-  MD/FREDERICK
 JV2402  COUNTRY     -  US
 JV2402  USGS QUAD   -  WALKERSVILLE (2016)
 JV2402
 JV2402                         *CURRENT SURVEY CONTROL
 JV2402  ______________________________________________________________________
 JV2402* NAD 83(1991) POSITION- 39 23 28.14853(N) 077 19 21.55256(W)   ADJUSTED
 JV2402* NAVD 88 ORTHO HEIGHT -   147.084 (meters)      482.56  (feet) ADJUSTED
 JV2402  ______________________________________________________________________
 JV2402  GEOID HEIGHT    -        -32.427 (meters)                     GEOID18
 JV2402  LAPLACE CORR    -          5.91  (seconds)                    DEFLEC18
 JV2402  DYNAMIC HEIGHT  -        147.006 (meters)      482.30  (feet) COMP
 JV2402  MODELED GRAVITY -    980,092.3   (mgal)                       NAVD 88
 JV2402
 JV2402  HORZ ORDER      -  SECOND
 JV2402  VERT ORDER      -  SECOND    CLASS 0
 JV2402
 JV2402.The horizontal coordinates were established by classical geodetic methods
 JV2402.and adjusted by the National Geodetic Survey in January 1992.
 JV2402
 JV2402.The orthometric height was determined by differential leveling and
 JV2402.adjusted by the NATIONAL GEODETIC SURVEY
 JV2402.in June 1991.
 JV2402
 JV2402.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2402.GEOID18 height accuracy estimate available here.
 JV2402
 JV2402.Click photographs - Photos may exist for this station.
 JV2402
 JV2402.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2402
 JV2402.The dynamic height is computed by dividing the NAVD 88
 JV2402.geopotential number by the normal gravity value computed on the
 JV2402.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2402.degrees latitude (g = 980.6199 gals.).
 JV2402
 JV2402.The modeled gravity was interpolated from observed gravity values.
 JV2402
 JV2402. The following values were computed from the NAD 83(1991) position.
 JV2402
 JV2402;                    North         East     Units Scale Factor Converg.
 JV2402;SPC MD       -   191,479.340   372,204.562   MT  0.99999024   -0 12 09.0
 JV2402;SPC MD       -   628,211.80  1,221,141.13   sFT  0.99999024   -0 12 09.0
 JV2402;UTM  18      - 4,362,758.280   299,978.642   MT  1.00009262   -1 28 28.1
 JV2402
 JV2402!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2402!SPC MD       -   0.99998201  x   0.99999024  =   0.99997225
 JV2402!UTM  18      -   0.99998201  x   1.00009262  =   1.00007463
 JV2402
 JV2402:                Primary Azimuth Mark                     Grid Az
 JV2402:SPC MD       -  IJAM 2 AZ MK 2                           109 03 29.9
 JV2402:UTM  18      -  IJAM 2 AZ MK 2                           110 19 49.0
 JV2402
 JV2402_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9997862758(NAD 83)
 JV2402
 JV2402|---------------------------------------------------------------------|
 JV2402| PID    Reference Object                     Distance      Geod. Az  |
 JV2402|                                                           dddmmss.s |
 JV2402| JV4577 IJAM 2 AZ MK 2                      APPROX. 0.7 KM 1085120.9 |
 JV2402| JV2403 DENNIS RM 1                          11.029 METERS 12515     |
 JV2402| JV2401 DENNIS RM 2                           9.195 METERS 27034     |
 JV2402|---------------------------------------------------------------------|
 JV2402
 JV2402                          SUPERSEDED SURVEY CONTROL
 JV2402
 JV2402  NAD 83(1986)-  39 23 28.14837(N)    077 19 21.56219(W) AD(       ) 2
 JV2402  NAD 27      -  39 23 27.78070(N)    077 19 22.62100(W) AD(       ) 2
 JV2402  NGVD 29             147.30   (m)          483.3    (f) LEVELING    3  
 JV2402  NGVD 29 (11/26/84)  147.299  (m)          483.26   (f) ADJUSTED    2 0
 JV2402
 JV2402.Superseded values are not recommended for survey control.
 JV2402
 JV2402.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2402.See file dsdata.pdf to determine how the superseded data were derived.
 JV2402
 JV2402_MARKER: DS = TRIANGULATION STATION DISK
 JV2402_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2402_STAMPING: DENNIS 1958
 JV2402_MARK LOGO: CGS
 JV2402_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2402+STABILITY: SURFACE MOTION
 JV2402
 JV2402  HISTORY     - Date     Condition        Report By
 JV2402  HISTORY     - 1958     MONUMENTED       CGS
 JV2402  HISTORY     - 1958     GOOD             CGS
 JV2402  HISTORY     - 1975     GOOD             NGS
 JV2402  HISTORY     - 20070615 MARK NOT FOUND   MDSHA
 JV2402
 JV2402                          STATION DESCRIPTION
 JV2402
 JV2402'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2402'STATION IS LOCATED ATOP A SMALL CUT-EMBANKMENT ON THE SOUTH SIDE
 JV2402'OF U.S. HIGHWAY NO. 40 ABOUT 5.8 MILES EAST OF THE CENTER OF
 JV2402'FREDERICK AND ABOUT 2.6 MILES WEST OF NEW MARKET.  STATION IS
 JV2402'79 FEET SOUTH OF APPROXIMATE CENTERLINE OF EAST BOUND TRAFFIC LANE
 JV2402'OF U.S. HIGHWAY NO. 40, 10 FEET NORTH-NORTHEAST OF FENCELINE AND
 JV2402'9 FEET NORTH-NORTHEAST OF WITNESS POST.  THE MARK IS SET FLUSH
 JV2402'AND THE DISK IS STAMPED DENNIS 1958.
 JV2402'
 JV2402'REFERENCE MARK NO. 1 IS 34 FEET EAST OF WITNESS POST, 1 FOOT
 JV2402'NORTH-NORTHEAST OF FENCELINE, 5 FEET WEST-NORTHWEST OF FENCE POST
 JV2402'AND 6-1/2 FEET EAST-NORTHEAST OF FENCE POST.  THE MARK IS SET
 JV2402'FLUSH AND THE DISK IS STAMPED DENNIS NO 1 1958.
 JV2402'
 JV2402'REFERENCE MARK NO. 2 IS 29 FEET WEST OF WITNESS POST, 1 FOOT
 JV2402'NORTH-NORTHEAST OF FENCELINE, 6 FEET EAST-NORTHEAST OF FENCE POST
 JV2402'AND 7 FEET WEST-NORTHWEST OF FENCE POST.  THE MARK IS SET FLUSH
 JV2402'AND THE DISK IS STAMPED DENNIS NO 2 1958.
 JV2402'
 JV2402'STATION CARMEL AND IJAM ARE BOTH VISIBLE FROM GROUND AND MAY
 JV2402'BE USED AS AZIMUTH MARK.
 JV2402'
 JV2402'TO REACH FROM THE EAST END OF OVERPASS AT U.S. HIGHWAY NO. 40
 JV2402'BY-PASS AND U.S. HIGHWAY NO. 40 (EAST BOUND), GO EASTERLY ON
 JV2402'U.S. HIGHWAY NO. 40 (EAST BOUND) FOR 3.55 MILES TO INTERSECTION
 JV2402'OF IJAMESVILLE ROAD.  CONTINUE EASTERLY ON U.S. HIGHWAY NO. 40
 JV2402'FOR 0.2 MILE TO STATION ATOP SMALL CUT-EMBANKMENT ON RIGHT
 JV2402'(SOUTH) SIDE OF HIGHWAY AS DESCRIBED.
 JV2402'
 JV2402'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV2402
 JV2402                          STATION RECOVERY (1958)
 JV2402
 JV2402'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2402'4.9 MI E FROM FREDERICK.
 JV2402'ABOUT 4.9 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2402'AT FREDERICK, ON THE TOP OF A SMALL CUT, ABOUT 80 FEET SOUTH OF
 JV2402'THE CENTER LINE OF THE EAST BOUND LANE, 10 FEET NORTH OF A
 JV2402'FENCE LINE, 9 FEET NORTH OF A WHITE WOODEN WITNESS POST, SET IN
 JV2402'THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND AND ABOUT 30
 JV2402'FEET ABOVE THE LEVEL OF THE HIGHWAY.
 JV2402
 JV2402                          STATION RECOVERY (1975)
 JV2402
 JV2402'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV2402'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JV2402'AS DESCRIBED IN THE 1958 DESCRIPTION.  THE DISTANCE AND DIRECTION
 JV2402'TO ALL MARKS WERE WITHIN CLOSE AGREEMENT WITH THE 1958
 JV2402'OBSERVATIONS.  THIS STATION EAS OCCUPIED IN CONJUNCTION WITH A
 JV2402'TRAVERSE LINE ALONG THE BALTIMORE NATIONAL PIKE.
 JV2402'
 JV2402'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV2402'2-1/2 MILES WEST OF NEW MARKET.
 JV2402
 JV2402                          STATION RECOVERY (2007)
 JV2402
 JV2402'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 JV2402'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 JV2402'STATION WAS SEARCHED FOR USING HH GPS RECEIVER. STATION WAS NOT
 JV2402'FOUND, BELIEVE STATION WAS DESTROYED DURING THE CONSTRUCTION OF
 JV2402'INTERSTATE HIGHWAY 70, REFERENCE MARKS WERE NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5439 ***********************************************************************
 JV5439  DESIGNATION -  DENNIS
 JV5439  PID         -  JV5439
 JV5439  STATE/COUNTY-  MD/BALTIMORE
 JV5439  COUNTRY     -  US
 JV5439  USGS QUAD   -  TOWSON (2016)
 JV5439
 JV5439                         *CURRENT SURVEY CONTROL
 JV5439  ______________________________________________________________________
 JV5439* NAD 83(1991) POSITION- 39 28 04.42217(N) 076 31 39.98167(W)   ADJUSTED
 JV5439* NAVD 88 ORTHO HEIGHT -   160.    (meters)      525.    (feet) SCALED
 JV5439  ______________________________________________________________________
 JV5439  GEOID HEIGHT    -        -32.618 (meters)                     GEOID18
 JV5439  LAPLACE CORR    -         -3.28  (seconds)                    DEFLEC18
 JV5439  HORZ ORDER      -  THIRD
 JV5439
 JV5439.The horizontal coordinates were established by classical geodetic methods
 JV5439.and adjusted by the National Geodetic Survey in January 1992.
 JV5439
 JV5439.The orthometric height was scaled from a topographic map.
 JV5439
 JV5439.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5439.GEOID18 height accuracy estimate available here.
 JV5439
 JV5439.Click photographs - Photos may exist for this station.
 JV5439
 JV5439.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5439
 JV5439. The following values were computed from the NAD 83(1991) position.
 JV5439
 JV5439;                    North         East     Units Scale Factor Converg.
 JV5439;SPC MD       -   200,055.550   440,636.514   MT  1.00000318   +0 17 47.0
 JV5439;SPC MD       -   656,348.92  1,445,654.96   sFT  1.00000318   +0 17 47.0
 JV5439;UTM  18      - 4,369,815.371   368,580.176   MT  0.99981265   -0 58 16.5
 JV5439
 JV5439!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5439!SPC MD       -   0.99998005  x   1.00000318  =   0.99998323
 JV5439!UTM  18      -   0.99998005  x   0.99981265  =   0.99979271
 JV5439
 JV5439:                Primary Azimuth Mark                     Grid Az
 JV5439:SPC MD       -  DENNIS AZ MK                             178 30 40.0
 JV5439:UTM  18      -  DENNIS AZ MK                             179 46 43.5
 JV5439
 JV5439_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6858069815(NAD 83)
 JV5439
 JV5439|---------------------------------------------------------------------|
 JV5439| PID    Reference Object                     Distance      Geod. Az  |
 JV5439|                                                           dddmmss.s |
 JV5439| JV5445 LONG GREEN BALTIMORE GAS TOWER      APPROX. 1.4 KM 0315547.9 |
 JV5439| CA9340 DENNIS RM 1                          23.300 METERS 10143     |
 JV5439| JV5443 CUB HILL FIRE TOWER                 APPROX. 6.2 KM 1742518.5 |
 JV5439| JV5432 CARNEY MICROWAVE RELAY TOWER        APPROX. 8.5 KM 1750536.7 |
 JV5439| AE5234 DENNIS AZ MK                                       1784827.0 |
 JV5439| CA9342 DENNIS RM 3                          16.367 METERS 19257     |
 JV5439| CA9341 DENNIS RM 2                          24.049 METERS 21648     |
 JV5439| CA9343 DENNIS RM 4                          14.107 METERS 27242     |
 JV5439|---------------------------------------------------------------------|
 JV5439
 JV5439                          SUPERSEDED SURVEY CONTROL
 JV5439
 JV5439  NAD 83(1986)-  39 28 04.41774(N)    076 31 39.98892(W) AD(       ) 3
 JV5439  NAD 27      -  39 28 04.03000(N)    076 31 41.11100(W) AD(       ) 3
 JV5439
 JV5439.Superseded values are not recommended for survey control.
 JV5439
 JV5439.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5439.See file dsdata.pdf to determine how the superseded data were derived.
 JV5439
 JV5439_MARKER: DS = TRIANGULATION STATION DISK
 JV5439_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5439_STAMPING: DENNIS 1957
 JV5439_MARK LOGO: CGS
 JV5439_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5439+STABILITY: SURFACE MOTION
 JV5439
 JV5439  HISTORY     - Date     Condition        Report By
 JV5439  HISTORY     - 1957     MONUMENTED       CGS
 JV5439  HISTORY     - 20020707 MARK NOT FOUND   USPS
 JV5439
 JV5439                          STATION DESCRIPTION
 JV5439
 JV5439'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5439'STATION IS LOCATED ABOUT 13.0 MILES NORTH-NORTHEAST OF THE CENTER
 JV5439'OF BALTIMORE, 6.0 MILES NORTHEAST OF TOWSON, 4.0 MILES SOUTHEAST
 JV5439'OF JACKSONVILLE AND ABOUT 0.5 MILE SOUTH OF THE VILLAGE OF LONG
 JV5439'GREEN.  STATION IS 23 FEET EAST OF NORTHEAST CORNER OF SMALL SHED,
 JV5439'22 FEET SOUTH OF A ROW OF APPLE TREES AND 5 FEET SOUTH-SOUTHWEST
 JV5439'OF WITNESS POST.  THE MARK IS FLUSH AND THE DISK IS STAMPED
 JV5439'DENNIS 1957.
 JV5439'
 JV5439'REFERENCE MARK NO. 1 IS 9 FEET WEST-SOUTHWEST OF SOUTHWEST
 JV5439'CORNER OF CHICKEN HOUSE, 1 FOOT NORTH OF FENCE AND 3 FEET
 JV5439'NORTHWEST OF FENCE POST.  THE MARK PROJECTS 2 INCHES AND THE DISK
 JV5439'IS STAMPED DENNIS NO 1 1957.
 JV5439'
 JV5439'REFERENCE MARK NO. 2 IS 36-1/2 FEET SOUTHWEST OF SOUTHWEST
 JV5439'CORNER OF SHED AND 27 FEET NORTH OF FENCE.  THE MARK PROJECTS 3
 JV5439'INCHES AND THE DISK IS STAMPED DENNIS NO 2 1957.
 JV5439'
 JV5439'AZIMUTH MARK IS 17 FEET EAST-SOUTHEAST OF APPROXIMATE CENTERLINE
 JV5439'OF MANOR ROAD AND 2-1/2 FEET NORTH-NORTHEAST OF WITNESS POST.  THE
 JV5439'MARK PROJECTS 2 INCHES AND THE DISK IS STAMPED DENNIS 1957.
 JV5439'
 JV5439'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 145 AND 146 IN
 JV5439'THE CENTER OF JACKSONVILLE, GO EAST ON STATE HIGHWAY NO. 145
 JV5439'(SWEETAIR ROAD) FOR 1.3 MILES TO CROSSROADS AT SWEETAIR.  TURN
 JV5439'RIGHT AND GO SOUTH ON MANOR ROAD FOR 2.55 MILES TO FORKS.  TAKE
 JV5439'RIGHT FORK AND CONTINUE SOUTHERLY ON MANOR ROAD FOR 0.6 MILE
 JV5439'TO VILLAGE OF LONG GREEN.  CONTINUE SOUTHERLY ON MANOR ROAD FOR
 JV5439'0.35 MILE TO DRIVEWAY TO LARGE WHITE HOUSE ON HILL ON RIGHT
 JV5439'(WEST) SIDE OF ROAD.  (CONTINUE SOUTHERLY ON MANOR ROAD FOR
 JV5439'0.3 MILE TO AZIMUTH MARK ON LEFT (EAST) SIDE OF ROAD).  TURN
 JV5439'RIGHT ON DRIVEWAY AND GO WESTERLY UP HILL FOR 0.1 MILE TO HOUSE.
 JV5439'CONTINUE WESTERLY AROUND NORTH SIDE OF BARN, TURN LEFT AND GO
 JV5439'SOUTH ALONG EDGE OF FIELD FOR 0.05 MILE TO ORCHARD AND STATION AS
 JV5439'DESCRIBED.
 JV5439'
 JV5439'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5439
 JV5439                          STATION RECOVERY (2002)
 JV5439
 JV5439'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 JV5439'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5234 ***********************************************************************
 AE5234  DESIGNATION -  DENNIS AZ MK
 AE5234  PID         -  AE5234
 AE5234  STATE/COUNTY-  MD/BALTIMORE
 AE5234  COUNTRY     -  US
 AE5234  USGS QUAD   -  TOWSON (2016)
 AE5234
 AE5234                         *CURRENT SURVEY CONTROL
 AE5234  ______________________________________________________________________
 AE5234* NAD 83(1986) POSITION- 39 27 54.     (N) 076 31 36.     (W)   SCALED
 AE5234* NAVD 88 ORTHO HEIGHT -   157.423 (meters)      516.48  (feet) ADJUSTED
 AE5234  ______________________________________________________________________
 AE5234  GEOID HEIGHT    -        -32.625 (meters)                     GEOID18
 AE5234  DYNAMIC HEIGHT  -        157.340 (meters)      516.21  (feet) COMP
 AE5234  MODELED GRAVITY -    980,098.8   (mgal)                       NAVD 88
 AE5234
 AE5234  VERT ORDER      -  SECOND    CLASS II
 AE5234
 AE5234.The horizontal coordinates were scaled from a map and have
 AE5234.an estimated accuracy of +/- 6 seconds.
 AE5234
 AE5234.The orthometric height was determined by differential leveling and
 AE5234.adjusted by the NATIONAL GEODETIC SURVEY
 AE5234.in February 1998.
 AE5234
 AE5234.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5234.GEOID18 height accuracy estimate available here.
 AE5234
 AE5234.Click photographs - Photos may exist for this station.
 AE5234
 AE5234.The dynamic height is computed by dividing the NAVD 88
 AE5234.geopotential number by the normal gravity value computed on the
 AE5234.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5234.degrees latitude (g = 980.6199 gals.).
 AE5234
 AE5234.The modeled gravity was interpolated from observed gravity values.
 AE5234
 AE5234;                    North         East    Units  Estimated Accuracy
 AE5234;SPC MD       -   199,740.      440,730.      MT  (+/- 180 meters Scaled)
 AE5234
 AE5234_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ686694(NAD 83)
 AE5234
 AE5234                          SUPERSEDED SURVEY CONTROL
 AE5234
 AE5234.No superseded survey control is available for this station.
 AE5234
 AE5234_MARKER: DZ = AZIMUTH MARK DISK
 AE5234_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE5234_STAMPING: DENNIS 1957
 AE5234_MARK LOGO: CGS
 AE5234_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE5234_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE5234+STABILITY: SURFACE MOTION
 AE5234_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AE5234+SATELLITE: SATELLITE OBSERVATIONS - July 07, 2002
 AE5234
 AE5234  HISTORY     - Date     Condition        Report By
 AE5234  HISTORY     - 1957     MONUMENTED       CGS
 AE5234  HISTORY     - 19960201 GOOD             MCCRON
 AE5234  HISTORY     - 20020707 GOOD             USPS
 AE5234
 AE5234                          STATION DESCRIPTION
 AE5234
 AE5234'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5234'STATION IS LOCATED ABOUT 12.5 MI (20.1 KM) NORTHEAST OF THE CENTER OF
 AE5234'BALTIMORE AND ABOUT 5.5 MI (8.9 KM) NORTHEAST OF TIMONIUM.  TO REACH
 AE5234'THE STATION FROM THE I-695 (BELTWAY) OVERPASS OVER CROMWELL BRIDGE
 AE5234'ROAD GO NORTH ON CROMWELL BRIDGE ROAD FOR 2.7 MI (4.3 KM) TO A T
 AE5234'INTERSECTION WITH CUB HILL ROAD ON THE RIGHT AND GLEN ARM ROAD ON THE
 AE5234'LEFT.  TURN LEFT ON GLEN ARM ROAD AND GO NORTH FOR 0.7 MI (1.1 KM) TO
 AE5234'THE INTERSECTION WITH MANOR ROAD.  TURN LEFT ON MANOR ROAD AND GO
 AE5234'NORTH FOR 2.35 MI (3.78 KM) TO THE STATION ON THE RIGHT.  STATION MARK
 AE5234'IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH
 AE5234'WITH THE GROUND.  IT IS 81.0 FT (24.7 M) SOUTH OF POWER POLE NO.
 AE5234'108641, 17.5 FT (5.3 M) EAST OF THE CENTERLINE OF MANOR ROAD, AND 50.5
 AE5234'FT (15.4 M) NORTHEAST OF TELEPHONE POLE NO.  2970.
 AE5234
 AE5234                          STATION RECOVERY (2002)
 AE5234
 AE5234'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 AE5234'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2403 ***********************************************************************
 JV2403  DESIGNATION -  DENNIS RM 1
 JV2403  PID         -  JV2403
 JV2403  STATE/COUNTY-  MD/FREDERICK
 JV2403  COUNTRY     -  US
 JV2403  USGS QUAD   -  WALKERSVILLE (2016)
 JV2403
 JV2403                         *CURRENT SURVEY CONTROL
 JV2403  ______________________________________________________________________
 JV2403* NAD 83(1986) POSITION- 39 23 27.94   (N) 077 19 21.18   (W)   HD_HELD1
 JV2403* NAVD 88 ORTHO HEIGHT -   147.069 (meters)      482.51  (feet) ADJUSTED
 JV2403  ______________________________________________________________________
 JV2403  GEOID HEIGHT    -        -32.427 (meters)                     GEOID18
 JV2403  DYNAMIC HEIGHT  -        146.991 (meters)      482.25  (feet) COMP
 JV2403  MODELED GRAVITY -    980,092.3   (mgal)                       NAVD 88
 JV2403
 JV2403  VERT ORDER      -  SECOND    CLASS 0
 JV2403
 JV2403.The horizontal coordinates were determined by differentially corrected
 JV2403.hand held GPS observations or other comparable positioning techniques
 JV2403.and have an estimated accuracy of +/- 3 meters.
 JV2403
 JV2403.The orthometric height was determined by differential leveling and
 JV2403.adjusted by the NATIONAL GEODETIC SURVEY
 JV2403.in June 1991.
 JV2403
 JV2403.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2403.GEOID18 height accuracy estimate available here.
 JV2403
 JV2403.Click photographs - Photos may exist for this station.
 JV2403
 JV2403.The dynamic height is computed by dividing the NAVD 88
 JV2403.geopotential number by the normal gravity value computed on the
 JV2403.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2403.degrees latitude (g = 980.6199 gals.).
 JV2403
 JV2403.The modeled gravity was interpolated from observed gravity values.
 JV2403
 JV2403;                    North         East    Units  Estimated Accuracy
 JV2403;SPC MD       -   191,472.9     372,213.5     MT  (+/- 3 meters HH1 GPS) 
 JV2403
 JV2403_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9998762751(NAD 83)
 JV2403
 JV2403                          SUPERSEDED SURVEY CONTROL
 JV2403
 JV2403  NGVD 29 (11/26/84)  147.284  (m)          483.21   (f) ADJUSTED    2 0
 JV2403
 JV2403.Superseded values are not recommended for survey control.
 JV2403
 JV2403.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2403.See file dsdata.pdf to determine how the superseded data were derived.
 JV2403
 JV2403_MARKER: DR = REFERENCE MARK DISK
 JV2403_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2403_STAMPING: DENNIS NO 1 1958
 JV2403_MARK LOGO: CGS
 JV2403_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2403+STABILITY: SURFACE MOTION
 JV2403
 JV2403  HISTORY     - Date     Condition        Report By
 JV2403  HISTORY     - 1958     MONUMENTED       CGS
 JV2403
 JV2403                          STATION DESCRIPTION
 JV2403
 JV2403'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2403'4.9 MI E FROM FREDERICK.
 JV2403'ABOUT 4.9 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2403'AT FREDERICK, ON THE TOP OF A CUT BANK, 36.2 FEET SOUTHEAST OF
 JV2403'THE STATION, 1 FOOT NORTH OF A FENCE LINE, SET IN THE TOP OF A
 JV2403'COCNRETE POST FLUSH WITH THE GROUND AND ABOUT 30 FEET ABOVE THE
 JV2403'LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2401 ***********************************************************************
 JV2401  DESIGNATION -  DENNIS RM 2
 JV2401  PID         -  JV2401
 JV2401  STATE/COUNTY-  MD/FREDERICK
 JV2401  COUNTRY     -  US
 JV2401  USGS QUAD   -  WALKERSVILLE (2016)
 JV2401
 JV2401                         *CURRENT SURVEY CONTROL
 JV2401  ______________________________________________________________________
 JV2401* NAD 83(1986) POSITION- 39 23 28.15   (N) 077 19 21.94   (W)   HD_HELD1
 JV2401* NAVD 88 ORTHO HEIGHT -   147.306 (meters)      483.29  (feet) ADJUSTED
 JV2401  ______________________________________________________________________
 JV2401  GEOID HEIGHT    -        -32.428 (meters)                     GEOID18
 JV2401  DYNAMIC HEIGHT  -        147.228 (meters)      483.03  (feet) COMP
 JV2401  MODELED GRAVITY -    980,092.3   (mgal)                       NAVD 88
 JV2401
 JV2401  VERT ORDER      -  SECOND    CLASS 0
 JV2401
 JV2401.The horizontal coordinates were determined by differentially corrected
 JV2401.hand held GPS observations or other comparable positioning techniques
 JV2401.and have an estimated accuracy of +/- 3 meters.
 JV2401
 JV2401.The orthometric height was determined by differential leveling and
 JV2401.adjusted by the NATIONAL GEODETIC SURVEY
 JV2401.in June 1991.
 JV2401
 JV2401.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2401.GEOID18 height accuracy estimate available here.
 JV2401
 JV2401.Click photographs - Photos may exist for this station.
 JV2401
 JV2401.The dynamic height is computed by dividing the NAVD 88
 JV2401.geopotential number by the normal gravity value computed on the
 JV2401.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2401.degrees latitude (g = 980.6199 gals.).
 JV2401
 JV2401.The modeled gravity was interpolated from observed gravity values.
 JV2401
 JV2401;                    North         East    Units  Estimated Accuracy
 JV2401;SPC MD       -   191,479.4     372,195.3     MT  (+/- 3 meters HH1 GPS) 
 JV2401
 JV2401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9996962758(NAD 83)
 JV2401
 JV2401                          SUPERSEDED SURVEY CONTROL
 JV2401
 JV2401  NGVD 29 (11/26/84)  147.521  (m)          483.99   (f) ADJUSTED    2 0
 JV2401
 JV2401.Superseded values are not recommended for survey control.
 JV2401
 JV2401.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2401.See file dsdata.pdf to determine how the superseded data were derived.
 JV2401
 JV2401_MARKER: DR = REFERENCE MARK DISK
 JV2401_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2401_STAMPING: DENNIS NO 2 1958
 JV2401_MARK LOGO: CGS
 JV2401_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2401+STABILITY: SURFACE MOTION
 JV2401
 JV2401  HISTORY     - Date     Condition        Report By
 JV2401  HISTORY     - 1958     MONUMENTED       CGS
 JV2401
 JV2401                          STATION DESCRIPTION
 JV2401
 JV2401'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2401'4.9 MI E FROM FREDERICK.
 JV2401'ABOUT 4.9 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2401'AT FREDERICK, ON THE TOP OF A CUT BANK, 30.2 FEET WEST OF THE
 JV2401'STATION, 1 FOOT NORTH OF A FENCE LINE, SET IN THE TOP OF A CONCRETE
 JV2401'POST FLUSH WITH THE GROUND AND ABOUT 30 FEET ABOVE THE LEVEL OF
 JV2401'THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0805 ***********************************************************************
 HU0805  DESIGNATION -  DENTON
 HU0805  PID         -  HU0805
 HU0805  STATE/COUNTY-  MD/CAROLINE
 HU0805  COUNTRY     -  US
 HU0805  USGS QUAD   -  DENTON (2017)
 HU0805
 HU0805                         *CURRENT SURVEY CONTROL
 HU0805  ______________________________________________________________________
 HU0805* NAD 83(1991) POSITION- 38 53 01.13688(N) 075 49 08.94359(W)   ADJUSTED
 HU0805* NAD 83(1991) ELLIP HT-   -20.351 (meters)        (01/27/92)   ADJUSTED
 HU0805* NAVD 88 ORTHO HEIGHT -    14.3   (meters)       47.    (feet) VERTCON3
 HU0805  ______________________________________________________________________
 HU0805  GEOID HEIGHT    -        -34.870 (meters)                     GEOID18
 HU0805  NAD 83(1991) X  -  1,217,917.509 (meters)                     COMP
 HU0805  NAD 83(1991) Y  - -4,819,937.042 (meters)                     COMP
 HU0805  NAD 83(1991) Z  -  3,982,257.903 (meters)                     COMP
 HU0805  LAPLACE CORR    -         -3.26  (seconds)                    DEFLEC18
 HU0805  HORZ ORDER      -  SECOND
 HU0805  ELLP ORDER      -  FOURTH    CLASS I
 HU0805
 HU0805.The horizontal coordinates were established by classical geodetic methods
 HU0805.and adjusted by the National Geodetic Survey in January 1992.
 HU0805
 HU0805.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU0805.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU0805
 HU0805.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0805.GEOID18 height accuracy estimate available here.
 HU0805
 HU0805.Click photographs - Photos may exist for this station.
 HU0805
 HU0805.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0805
 HU0805.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0805
 HU0805.The ellipsoidal height was determined by GPS observations
 HU0805.and is referenced to NAD 83.
 HU0805
 HU0805. The following values were computed from the NAD 83(1991) position.
 HU0805
 HU0805;                    North         East     Units Scale Factor Converg.
 HU0805;SPC MD       -   135,752.863   502,452.028   MT  0.99994986   +0 44 28.1
 HU0805;SPC MD       -   445,382.52  1,648,461.36   sFT  0.99994986   +0 44 28.1
 HU0805;UTM  18      - 4,304,183.963   428,951.737   MT  0.99966216   -0 30 51.2
 HU0805
 HU0805!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0805!SPC MD       -   1.00000319  x   0.99994986  =   0.99995305
 HU0805!UTM  18      -   1.00000319  x   0.99966216  =   0.99966535
 HU0805
 HU0805:                Primary Azimuth Mark                     Grid Az
 HU0805:SPC MD       -  DENTON MUN TANK                          291 52 18.8
 HU0805:UTM  18      -  DENTON MUN TANK                          293 07 38.1
 HU0805
 HU0805_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2895104183(NAD 83)
 HU0805
 HU0805|---------------------------------------------------------------------|
 HU0805| PID    Reference Object                     Distance      Geod. Az  |
 HU0805|                                                           dddmmss.s |
 HU0805| HU2096 GREENSBORO WATER TANK               APPROX.10.2 KM 0054115.6 |
 HU0805| DC7221 DENTON RM 3 AZIMUTH                                0931800.2 |
 HU0805| HU0803 DENTON RM 1                          37.835 METERS 23013     |
 HU0805| HU2102 DENTON RM 4                          27.567 METERS 28323     |
 HU0805| HU2100 DENTON MUNICIPAL TANK               APPROX. 0.9 KM 2915209.5 |
 HU0805| HU2103 DENTON MUN TANK                     APPROX. 0.9 KM 2923646.9 |
 HU0805| DC7220 DENTON RM 2                          28.316 METERS 29732     |
 HU0805| HU2101 DENTON WEST POWERLINE TOWER         APPROX. 1.6 KM 3120927.3 |
 HU0805| HU2099 DENTON EAST POWERLINE TOWER         APPROX. 1.4 KM 3174132.6 |
 HU0805| HU2111 RIDGELY WATER TANK                  APPROX. 9.2 KM 3202452.8 |
 HU0805|---------------------------------------------------------------------|
 HU0805
 HU0805                          SUPERSEDED SURVEY CONTROL
 HU0805
 HU0805  NAD 83(1986)-  38 53 01.13060(N)    075 49 08.95787(W) AD(       ) 2
 HU0805  NAD 27      -  38 53 00.72300(N)    075 49 10.20000(W) AD(       ) 2
 HU0805  NGVD 29 (03/22/89)   14.5    (m)  RAPSU86  model used  GPS OBS        
 HU0805  NGVD 29              12.89   (m)           42.3    (f) LEVELING    3  
 HU0805
 HU0805.Superseded values are not recommended for survey control.
 HU0805
 HU0805.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0805.See file dsdata.pdf to determine how the superseded data were derived.
 HU0805
 HU0805_MARKER: DS = TRIANGULATION STATION DISK
 HU0805_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0805_STAMPING: DENTON 1934
 HU0805_MARK LOGO: CGS
 HU0805_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU0805_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0805+STABILITY: SURFACE MOTION
 HU0805_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0805+SATELLITE: SATELLITE OBSERVATIONS - May 20, 2002
 HU0805
 HU0805  HISTORY     - Date     Condition        Report By
 HU0805  HISTORY     - 1934     MONUMENTED       CGS
 HU0805  HISTORY     - 1943     GOOD             CGS
 HU0805  HISTORY     - 1954     GOOD             LOCENG
 HU0805  HISTORY     - 1961     GOOD             CGS
 HU0805  HISTORY     - 1988     GOOD             NGS
 HU0805  HISTORY     - 20020520 MARK NOT FOUND   MDSHA
 HU0805  HISTORY     - 20031122 MARK NOT FOUND   USPSQD
 HU0805
 HU0805                          STATION DESCRIPTION
 HU0805
 HU0805'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU0805'THIS SECOND-ORDER STATION IS LOCATED AT THE CITY LIMITS OF DENTON, IN
 HU0805'THE TRIANGULAR BLOCK AT THE INTERSECTION OF MARKET AND GAY STREETS, ON
 HU0805'THE PROPERTY OF THE NUTTLE MILLING CO.  THE STATION MARK IS FLUSH WITH
 HU0805'THE GROUND.
 HU0805'
 HU0805'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD BRONZE
 HU0805'DISKS SET IN CONCRETE.
 HU0805'
 HU0805'REFERENCE MARK NO.1 IS 124.13 FEET SW OF STATION, 4 PACES S OF CENTER
 HU0805'LINE OF ROAD, 3 PACES W OF TELEPHONE POLE, 13 PACES WSW OF RAILROAD
 HU0805'CROSSING.  MARK PROJECTS 4 INCHES ABOVE GROUND.
 HU0805'
 HU0805'REFERENCE MARK NO.2 IS 92.59 FEET WNW OF STATION, 6 PACES WSW OF
 HU0805'CENTER LINE OF MILL ROAD, 11 PACES NNE OF CENTER LINE OF ROAD, (W SIDE
 HU0805'OF CIRCLE) 2 PACES SSE OF TELEPHONE POLE.
 HU0805'
 HU0805'REFERENCE MARK NO.3 (AZIMUTH MARK) IS ABOUT 0.25 MILE E OF STATION, 37
 HU0805'PACES S OF CENTER LINE OF HIGHWAY, 12 PACES NNE OF NE CORNER OF YELLOW
 HU0805'HOUSE BELONGING TO MR. CHEZZUM.  MARK IS 4 INCHES ABOVE GROUND.
 HU0805'
 HU0805'TO REACH THE STATION FROM DENTON COURTHOUSE GO OUT MARKET STREET, FOR
 HU0805'0.9 MILE TO RAILROAD CROSSING.  CROSS RAILROAD TRACKS AND TURN LEFT
 HU0805'INTO THE NUTTLE MILLING CO. YARDS AND STATION.  THE STATION IS 10
 HU0805'PACES S OF LARGE CORN CRIB, 12 PACES E OF CENTER LINE OF MILL ROAD,
 HU0805'AND 5 PACES N OF PANTRY DOOR OF RAILROAD CAR USED AS DWELLING.
 HU0805
 HU0805                          STATION RECOVERY (1943)
 HU0805
 HU0805'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HU0805'RECOVERED AS DESCRIBED EXCEPT THAT STATION IS 6 FEET W OF A
 HU0805'POWER-TRANSMISSION LINE POLE.  STATION MARK STAMPED DENTON 1935.  R.M.
 HU0805'1 IS STAMPED R.M. 1 DENTON.
 HU0805
 HU0805                          STATION RECOVERY (1954)
 HU0805
 HU0805'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1954 (HW)
 HU0805'REFERENCE--THE EASTERN SHORE PUBLIC SERVICE COMPANY OF MARYLANDS
 HU0805'LETTER BY HARRY WILLIAMSON, TRANS. ENGR., DATED 2, 1954--
 HU0805'
 HU0805'STATION AND REFERENCE MARK NO. 2 APPEARED TO BE IN GOOD CONDITION.
 HU0805'REFERENCE MARK NO. 1 WAS FOUND TO HAVE BEEN DISTURBED, PROBABLY BY
 HU0805'ROAD WORKERS.  REFERENCE MARK NO. 3 (AZIMUTH MARK) WAS NOT VISIBLE
 HU0805'FROM THE STATION BECAUSE OF INTERVENING OBSTACLES.
 HU0805
 HU0805                          STATION RECOVERY (1961)
 HU0805
 HU0805'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 HU0805'THE STATION MARK, REFERENCE MARKS 2 AND 3 WAS RECOVERED AS
 HU0805'DESCRIBED AND IN GOOD CONDITION.  REFERENCE MARK NUMBER 1 WAS
 HU0805'SEARCHED FOR BUT NOT RECOVERED.  IT IS BELIEVED TO HAVE BEEN
 HU0805'DESTROYED DUE TO CONSTRUCTION OF A DRIVEWAY TO THE SOUTHERN
 HU0805'STATES DENTON COOPERATIVE ESTABLISHMENT.
 HU0805'
 HU0805'THE STATION MARK, REFERENCE MARK 2 ARE NOW FLUSH WITH THE
 HU0805'GROUND SURFACE.  REFERENCE MARK NUMBER 3 AZIMUTH MARK, IS NO
 HU0805'LONGER VISIABLE FROM THE GROUND.  IT WAS DESTROYED AND REFERENCE
 HU0805'MARK NUMBER 5 WAS ESTABLISHED.
 HU0805'
 HU0805'AN OBSERVATION TOWER CAN NO LONGER BE ERECTED OVER DENTON 1934
 HU0805'STATION DUE DWELLING IN THE VISINITY OF THE STATION.  REFERENCE
 HU0805'MARK NUMBER 4 WAS ESTABLISHED AND OBSERVED FROM.
 HU0805
 HU0805                          STATION RECOVERY (1988)
 HU0805
 HU0805'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 (AJL)
 HU0805'THE STATION WAS RECOVERED AT THIS DATE.  STATION AND REFERENCE MARKS 2
 HU0805'AND 4 WERE RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.
 HU0805'
 HU0805'THE STATION IS LOCATED ABOUT 1.3 KM (0.8 MI) SOUTHEAST OF THE CENTER
 HU0805'OF DENTON, IN THE INSIDE ANGLE OF THE Y-JUNCTION FORMED BY THE
 HU0805'JUNCTION OF GAY STREET AND HOBBS ROAD, JUST NORTHEAST ACROSS HOBBS
 HU0805'ROAD FROM THE SOUTHERN STATES COOPERATIVE BUILDING.  OWNERSHIP--THOMAS
 HU0805'AND ALICE BROWN, P O BOX 15, 1013 GAY STREET EXTENDED, DENTON MD
 HU0805'21629.  PHONE (301) 479-2625.
 HU0805'
 HU0805'TO REACH THE STATION FROM THE COUNTY COURTHOUSE IN DENTON, GO
 HU0805'SOUTHEAST FOR 0.6 KM (0.35 MI) ON MARKET STREET TO THE JUNCTION OF
 HU0805'STATE HIGHWAY 313, 6TH STREET.  CONTINUE STRAIGHT AHEAD AND GO
 HU0805'SOUTHEAST FOR 0.6 KM (0.4 MI) ON MARKET STREET TO THE JUNCTION OF
 HU0805'NORTH BOUND STATE HIGHWAY 404 BUSINESS.  CONTINUE STRAIGHT AHEAD AND
 HU0805'GO EAST FOR 0.2 KM (0.1 MI) ON HOBBS ROAD TO THE STATION ON THE LEFT,
 HU0805'JUST AFTER CROSSING AN ABANDONED RAILROAD CROSSING AND JUST SOUTHWEST
 HU0805'OF THE SMALL FRAME HOUSE.
 HU0805'
 HU0805'THE STATION IS A STANDARD NGS DISK STAMPED ---DENTON 1934---, SET INTO
 HU0805'THE TOP OF A SQUARE CONCRETE MONUMENT 28 CM ON SIDE RECESSED 5 CM
 HU0805'BELOW GROUND.  LOCATED 34.6 METERS (133.4 FT) SOUTH-SOUTHWEST FROM THE
 HU0805'CENTER OF GAY STREET, 19.3 METERS (63.3 FT) NORTHWEST FROM THE
 HU0805'NORTHWEST END OF A 30-CM METAL CULVERT PIPE UNDER HOBBS ROAD, 19.2
 HU0805'METERS (63.0 FT) NORTH-NORTHEAST FROM THE CENTER OF HOBBS ROAD, 13.7
 HU0805'METERS (44.9 FT) NORTH FROM A 80-CM CEDAR TREE, AND 9.6 METERS
 HU0805'(31.5 FT) SOUTHWEST FROM THE SOUTHWEST CORNER OF THE SMALL FRAME
 HU0805'HOUSE.
 HU0805'
 HU0805'DESCRIBED BY C.L. SMITH, TYPED BY R.L. ZURFLUH.
 HU0805
 HU0805                          STATION RECOVERY (2002)
 HU0805
 HU0805'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0805'THE STATION WAS SEARCHED FOR AND NOT RECOVERED. THE STATION NOW
 HU0805'APPEARS TO BE LOCATED UNDER A PAVED DRIVEWAY.
 HU0805
 HU0805                          STATION RECOVERY (2003)
 HU0805
 HU0805'RECOVERY NOTE BY US POWER SQUADRON 2003 (KN)
 HU0805'HOMEOWNER JOHN BECK JR. STATED THAT THE TRIANGULATION STATION IS NOW
 HU0805'COVERED BY A DRIVEWAY ON HIS PROPERTY.
 HU0805'
 HU0805'REFERENCE MARK NO. 2 WAS RECOVERED IN GOOD CONDITION IN THE YARD OF
 HU0805'NUMBER 1010 GAY STREET EXTENDED (NEXT TO THE BECK HOME)   REFERENCED
 HU0805'POWERLINE POLE, GRAVELED ROAD AND WITNESS POST DO NOT EXIST.  RM2 IS
 HU0805'22 FT. 8 INCHES NNE OF RM NO. 4 AND 24 FT 10 INCHES ENE FROM THE
 HU0805'CORNER OF THE HOME ON THE PROPERTY.
 HU0805'
 HU0805'RM NO. 5 WAS RECOVERED IN GOOD CONDITION AT THE EDGE OF GAY STREET
 HU0805'EXTENDED, 29 FEET ESE OF POLE 36C.  WITNESS POST DOES NOT EXIST.
 HU0805'
 HU0805'THE THREE REFERENCE MARKS ARE SUITABLE FOR SATELLITE OBSERVATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2576 ***********************************************************************
 HU2576  DESIGNATION -  DENTON
 HU2576  PID         -  HU2576
 HU2576  STATE/COUNTY-  MD/CAROLINE
 HU2576  COUNTRY     -  US
 HU2576  USGS QUAD   -  DENTON (2017)
 HU2576
 HU2576                         *CURRENT SURVEY CONTROL
 HU2576  ______________________________________________________________________
 HU2576* NAD 83(1986) POSITION- 38 53 11.3    (N) 075 49 43.2    (W)   HD_HELD2
 HU2576* NAVD 88 ORTHO HEIGHT -    12.504 (meters)       41.02  (feet) ADJUSTED
 HU2576  ______________________________________________________________________
 HU2576  GEOID HEIGHT    -        -34.846 (meters)                     GEOID18
 HU2576  DYNAMIC HEIGHT  -         12.497 (meters)       41.00  (feet) COMP
 HU2576  MODELED GRAVITY -    980,041.2   (mgal)                       NAVD 88
 HU2576
 HU2576  VERT ORDER      -  SECOND    CLASS I
 HU2576
 HU2576.The horizontal coordinates were established by autonomous hand held GPS
 HU2576.observations and have an estimated accuracy of +/- 10 meters.
 HU2576
 HU2576.The orthometric height was determined by differential leveling and
 HU2576.adjusted by the NATIONAL GEODETIC SURVEY
 HU2576.in June 1991.
 HU2576
 HU2576.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2576.GEOID18 height accuracy estimate available here.
 HU2576
 HU2576.Click photographs - Photos may exist for this station.
 HU2576
 HU2576.The dynamic height is computed by dividing the NAVD 88
 HU2576.geopotential number by the normal gravity value computed on the
 HU2576.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2576.degrees latitude (g = 980.6199 gals.).
 HU2576
 HU2576.The modeled gravity was interpolated from observed gravity values.
 HU2576
 HU2576;                    North         East    Units  Estimated Accuracy
 HU2576;SPC MD       -   136,056.      501,622.      MT  (+/- 10 meters HH2 GPS)
 HU2576
 HU2576_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2812904504(NAD 83)
 HU2576
 HU2576                          SUPERSEDED SURVEY CONTROL
 HU2576
 HU2576  NGVD 29 (11/26/84)   12.744  (m)           41.81   (f) ADJUSTED    2 0
 HU2576
 HU2576.Superseded values are not recommended for survey control.
 HU2576
 HU2576.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2576.See file dsdata.pdf to determine how the superseded data were derived.
 HU2576
 HU2576_MARKER: DB = BENCH MARK DISK
 HU2576_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2576_STAMPING: DENTON 1935
 HU2576_MARK LOGO: CGS
 HU2576_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2576_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2576+STABILITY: SURFACE MOTION
 HU2576_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2576+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2003
 HU2576
 HU2576  HISTORY     - Date     Condition        Report By
 HU2576  HISTORY     - 1935     MONUMENTED       CGS
 HU2576  HISTORY     - 1943     GOOD             CGS
 HU2576  HISTORY     - 19901029 GOOD             NGS
 HU2576  HISTORY     - 20010619 GOOD             MDSHA
 HU2576  HISTORY     - 20020520 GOOD             MDSHA
 HU2576  HISTORY     - 20031122 GOOD             USPSQD
 HU2576  HISTORY     - 20061021 GOOD             GEOCAC
 HU2576
 HU2576                          STATION DESCRIPTION
 HU2576
 HU2576'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HU2576'AT DENTON, CAROLINE COUNTY, AT THE INTERSECTION OF FIFTH AND GAY
 HU2576'STREETS, 70 FT (21.3 M) EAST OF THE CENTER LINE OF FIFTH STREET, 30
 HU2576'FT (9.1 M) NORTH OF THE CENTER LINE OF GAY STREET, AND 17 FT (5.2 M)
 HU2576'EAST OF THE SOUTHEAST CORNER OF THE CITY WATERWORKS PUMPHOUSE.  A
 HU2576'STANDARD DISK, STAMPED DENTON 1935 AND SET IN THE TOP OF A 12-BY
 HU2576'12-INCH CONCRETE POST PROJECTING ABOUT 6 INCHES ABOVE GROUND.
 HU2576
 HU2576                          STATION RECOVERY (1943)
 HU2576
 HU2576'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 HU2576'RECOVERED IN GOOD CONDITION.
 HU2576
 HU2576                          STATION RECOVERY (1990)
 HU2576
 HU2576'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU2576'IN DENTON, AT THE INTERSECTION OF FIFTH AND GAY STREETS, 22.7 M
 HU2576'(74.5 FT) EAST OF THE CENTER OF FIFTH STREET, 8.6 M (28.2 FT) NORTH
 HU2576'OF THE CENTER OF GAY STREET, 4.8 M (15.7 FT) EAST OF THE SOUTHEAST
 HU2576'CORNER OF THE CITY WATER WORKS PUMP HOUSE, 0.3 M (1.0 FT) ABOVE THE
 HU2576'LEVEL OF GAY STREET, 0.2 M (0.7 FT) NORTH OF A FENCE, AND THE
 HU2576'MONUMENT PROJECTS 0.1 M (0.3 FT) ABOVE THE GROUND SURFACE.
 HU2576
 HU2576                          STATION RECOVERY (2001)
 HU2576
 HU2576'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU2576'RECOVERED AS DESCRIBED.
 HU2576
 HU2576                          STATION RECOVERY (2002)
 HU2576
 HU2576'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2576'RECOVERED AS DESCRIBED.
 HU2576
 HU2576                          STATION RECOVERY (2003)
 HU2576
 HU2576'RECOVERY NOTE BY US POWER SQUADRON 2003 (KN)
 HU2576'RECOVERED IN GOOD CONDITION.
 HU2576
 HU2576                          STATION RECOVERY (2006)
 HU2576
 HU2576'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 HU2576'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2099 ***********************************************************************
 HU2099  DESIGNATION -  DENTON EAST POWERLINE TOWER
 HU2099  PID         -  HU2099
 HU2099  STATE/COUNTY-  MD/CAROLINE
 HU2099  COUNTRY     -  US
 HU2099  USGS QUAD   -  DENTON (2017)
 HU2099
 HU2099                         *CURRENT SURVEY CONTROL
 HU2099  ______________________________________________________________________
 HU2099* NAD 83(1991) POSITION- 38 53 35.14253(N) 075 49 48.55055(W)   ADJUSTED
 HU2099  ______________________________________________________________________
 HU2099  GEOID HEIGHT    -        -34.826 (meters)                     GEOID18
 HU2099  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 HU2099  HORZ ORDER      -  THIRD
 HU2099
 HU2099.The horizontal coordinates were established by classical geodetic methods
 HU2099.and adjusted by the National Geodetic Survey in January 1992.
 HU2099
 HU2099.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2099.GEOID18 height accuracy estimate available here.
 HU2099
 HU2099.Click photographs - Photos may exist for this station.
 HU2099
 HU2099.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2099
 HU2099. The following values were computed from the NAD 83(1991) position.
 HU2099
 HU2099;                    North         East     Units Scale Factor Converg.
 HU2099;SPC MD       -   136,789.068   501,484.101   MT  0.99994989   +0 44 03.2
 HU2099;SPC MD       -   448,782.13  1,645,285.75   sFT  0.99994989   +0 44 03.2
 HU2099;UTM  18      - 4,305,240.823   428,007.017   MT  0.99966382   -0 31 16.5
 HU2099
 HU2099_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2800705240(NAD 83)
 HU2099
 HU2099                          SUPERSEDED SURVEY CONTROL
 HU2099
 HU2099  NAD 83(1986)-  38 53 35.13640(N)    075 49 48.56473(W) AD(       ) 3
 HU2099  NAD 27      -  38 53 34.73600(N)    075 49 49.81100(W) AD(       ) 3
 HU2099
 HU2099.Superseded values are not recommended for survey control.
 HU2099
 HU2099.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2099.See file dsdata.pdf to determine how the superseded data were derived.
 HU2099
 HU2099_MARKER: 55 = TOWER
 HU2099_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2099+SATELLITE: SATELLITE OBSERVATIONS - February 12, 2003
 HU2099
 HU2099  HISTORY     - Date     Condition        Report By
 HU2099  HISTORY     - 1934     FIRST OBSERVED   CGS
 HU2099  HISTORY     - 1943     GOOD             CGS
 HU2099  HISTORY     - 20030212 GOOD             USPSQD
 HU2099  HISTORY     - 20061021 GOOD             GEOCAC
 HU2099
 HU2099                          STATION DESCRIPTION
 HU2099
 HU2099'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HU2099'THE STATION IS THE CENTER PAIRED INSULATOR NEAR THE TOP OF THE
 HU2099'STRUCTURAL-STEEL POWER-TRANSMISSION LINE MAST LOCATED ON THE E
 HU2099'BANK OF THE CHOPTANK RIVER, ABOUT 0.5 MILE NE OF THE HIGHWAY
 HU2099'BRIDGE ACROSS THE CHOPTANK RIVER AT DENTON, MARYLAND.
 HU2099
 HU2099                          STATION RECOVERY (2003)
 HU2099
 HU2099'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HU2099'ACCORDING TO THE LEAD ENGINEER AT CONECTIVE POWER DELIVERY THIS IS THE
 HU2099'TOWER FIRST OBSERVED IN 1934 AND RECOVERED IN 1943.  HOWEVER, IT IS
 HU2099'NOT KNOWN WHETHER THE INSULATORS PRESENTLY IN PLACE ARE IN THE SAME
 HU2099'POSITION AS THOSE ORIGNIALLY CITED.
 HU2099
 HU2099                          STATION RECOVERY (2006)
 HU2099
 HU2099'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 HU2099'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2103 ***********************************************************************
 HU2103  DESIGNATION -  DENTON MUN TANK
 HU2103  PID         -  HU2103
 HU2103  STATE/COUNTY-  MD/CAROLINE
 HU2103  COUNTRY     -  US
 HU2103  USGS QUAD   -  DENTON (2017)
 HU2103
 HU2103                         *CURRENT SURVEY CONTROL
 HU2103  ______________________________________________________________________
 HU2103* NAD 83(1991) POSITION- 38 53 12.25235(N) 075 49 43.09220(W)   ADJUSTED
 HU2103  ______________________________________________________________________
 HU2103  GEOID HEIGHT    -        -34.845 (meters)                     GEOID18
 HU2103  LAPLACE CORR    -         -3.30  (seconds)                    DEFLEC18
 HU2103  HORZ ORDER      -  THIRD
 HU2103
 HU2103.The horizontal coordinates were established by classical geodetic methods
 HU2103.and adjusted by the National Geodetic Survey in January 1992.
 HU2103
 HU2103.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2103.GEOID18 height accuracy estimate available here.
 HU2103
 HU2103.Click photographs - Photos may exist for this station.
 HU2103
 HU2103.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2103
 HU2103. The following values were computed from the NAD 83(1991) position.
 HU2103
 HU2103;                    North         East     Units Scale Factor Converg.
 HU2103;SPC MD       -   136,084.982   501,624.681   MT  0.99994987   +0 44 06.7
 HU2103;SPC MD       -   446,472.15  1,645,746.97   sFT  0.99994987   +0 44 06.7
 HU2103;UTM  18      - 4,304,534.029   428,132.101   MT  0.99966360   -0 31 12.8
 HU2103
 HU2103_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2813204534(NAD 83)
 HU2103
 HU2103                          SUPERSEDED SURVEY CONTROL
 HU2103
 HU2103  NAD 83(1986)-  38 53 12.24609(N)    075 49 43.10619(W) AD(       ) 3
 HU2103
 HU2103.Superseded values are not recommended for survey control.
 HU2103
 HU2103.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2103.See file dsdata.pdf to determine how the superseded data were derived.
 HU2103
 HU2103_MARKER: 53 = ELEVATED TANK
 HU2103_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2103+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2003
 HU2103
 HU2103  HISTORY     - Date     Condition        Report By
 HU2103  HISTORY     - 1961     FIRST OBSERVED   CGS
 HU2103  HISTORY     - 20031122 GOOD             USPSQD
 HU2103
 HU2103                          STATION DESCRIPTION
 HU2103
 HU2103'DESCRIBED BY US POWER SQUADRON 2003 (KN)
 HU2103'SPOKESMAN  FOR THE CITY OF DENTON PUBLIC WORKS STATED THAT THE
 HU2103'EXISTING TANK WAS CONSTRUCTED IN THE EARLY 1930'S.  TANK IS NOW
 HU2103'PAINTED LIGHT BLUE-GRAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0803 ***********************************************************************
 HU0803  DESIGNATION -  DENTON RM 1
 HU0803  PID         -  HU0803
 HU0803  STATE/COUNTY-  MD/CAROLINE
 HU0803  COUNTRY     -  US
 HU0803  USGS QUAD   -  DENTON (2017)
 HU0803
 HU0803                         *CURRENT SURVEY CONTROL
 HU0803  ______________________________________________________________________
 HU0803* NAD 83(1986) POSITION- 38 53 00.35   (N) 075 49 10.15   (W)   HD_HELD1
 HU0803* NAVD 88 ORTHO HEIGHT -    14.810 (meters)       48.59  (feet) ADJUSTED
 HU0803  ______________________________________________________________________
 HU0803  GEOID HEIGHT    -        -34.870 (meters)                     GEOID18
 HU0803  DYNAMIC HEIGHT  -         14.801 (meters)       48.56  (feet) COMP
 HU0803  MODELED GRAVITY -    980,040.6   (mgal)                       NAVD 88
 HU0803
 HU0803  VERT ORDER      -  SECOND    CLASS 0
 HU0803
 HU0803.The horizontal coordinates were determined by differentially corrected
 HU0803.hand held GPS observations or other comparable positioning techniques
 HU0803.and have an estimated accuracy of +/- 3 meters.
 HU0803
 HU0803.The orthometric height was determined by differential leveling and
 HU0803.adjusted by the NATIONAL GEODETIC SURVEY
 HU0803.in June 1991.
 HU0803
 HU0803.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0803.GEOID18 height accuracy estimate available here.
 HU0803
 HU0803.Click photographs - Photos may exist for this station.
 HU0803
 HU0803.The dynamic height is computed by dividing the NAVD 88
 HU0803.geopotential number by the normal gravity value computed on the
 HU0803.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0803.degrees latitude (g = 980.6199 gals.).
 HU0803
 HU0803.The modeled gravity was interpolated from observed gravity values.
 HU0803
 HU0803;                    North         East    Units  Estimated Accuracy
 HU0803;SPC MD       -   135,728.2     502,423.3     MT  (+/- 3 meters HH1 GPS) 
 HU0803
 HU0803_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2892204159(NAD 83)
 HU0803
 HU0803                          SUPERSEDED SURVEY CONTROL
 HU0803
 HU0803  NGVD 29 (11/26/84)   15.050  (m)           49.38   (f) ADJUSTED    2 0
 HU0803
 HU0803.Superseded values are not recommended for survey control.
 HU0803
 HU0803.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0803.See file dsdata.pdf to determine how the superseded data were derived.
 HU0803
 HU0803_MARKER: DR = REFERENCE MARK DISK
 HU0803_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0803_STAMPING: DENTON NO 1 1934
 HU0803_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0803+STABILITY: SURFACE MOTION
 HU0803
 HU0803  HISTORY     - Date     Condition        Report By
 HU0803  HISTORY     - 1934     MONUMENTED       CGS
 HU0803  HISTORY     - 1943     GOOD             CGS
 HU0803  HISTORY     - 19901029 MARK NOT FOUND   NGS
 HU0803
 HU0803                          STATION DESCRIPTION
 HU0803
 HU0803'DESCRIBED BY COAST AND GEODETIC SURVEY 1943
 HU0803'AT DENTON.
 HU0803'AT DENTON, CAROLINE COUNTY, ON THE ABANDONED MARYLAND AND
 HU0803'DELAWARE SEACOAST RAILROAD, ABOUT 200 FEET SOUTH OF THE NUTTLE
 HU0803'MILLING CO., AT THE CROSSING OF THE HOBBS ROAD, 42 FEET WEST OF
 HU0803'THE WEST RAIL, 12 FEET SOUTH OF THE CENTER LINE OF THE ROAD, 6
 HU0803'FEET WEST OF A POWER-TRANSMISSION LINE POLE, AND ABOUT LEVEL WITH
 HU0803'THE ROAD.  A STANDARD REFERENCE-MARK DISK, STAMPED DENTON NO. 1
 HU0803'1934 AND SET IN THE TOP OF A 12-BY 12-INCH CONCRETE POST
 HU0803'PROJECTING ABOUT 4 INCHES ABOVE GROUND.  NOTE-- STATION IS 6 FT.
 HU0803'WEST OF POWER LINE POLE, NOT 6 FT. WEST OF COMMUNICATION LINE.
 HU0803
 HU0803                          STATION RECOVERY (1990)
 HU0803
 HU0803'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0803'THE DESCRIBED AREA IS NOW A DRIVEWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DC7220 ***********************************************************************
 DC7220  DESIGNATION -  DENTON RM 2
 DC7220  PID         -  DC7220
 DC7220  STATE/COUNTY-  MD/CAROLINE
 DC7220  COUNTRY     -  US
 DC7220  USGS QUAD   -  DENTON (2017)
 DC7220
 DC7220                         *CURRENT SURVEY CONTROL
 DC7220  ______________________________________________________________________
 DC7220* NAD 83(1986) POSITION- 38 53 01.56   (N) 075 49 09.99   (W)   HD_HELD1
 DC7220* NAVD 88 ORTHO HEIGHT -    14.695 (meters)       48.21  (feet) ADJUSTED
 DC7220  ______________________________________________________________________
 DC7220  GEOID HEIGHT    -        -34.869 (meters)                     GEOID18
 DC7220  DYNAMIC HEIGHT  -         14.686 (meters)       48.18  (feet) COMP
 DC7220  MODELED GRAVITY -    980,040.5   (mgal)                       NAVD 88
 DC7220
 DC7220  VERT ORDER      -  SECOND    CLASS I
 DC7220
 DC7220.The horizontal coordinates were determined by differentially corrected
 DC7220.hand held GPS observations or other comparable positioning techniques
 DC7220.and have an estimated accuracy of +/- 3 meters.
 DC7220
 DC7220.The orthometric height was determined by differential leveling and
 DC7220.adjusted by the NATIONAL GEODETIC SURVEY
 DC7220.in December 2004.
 DC7220
 DC7220.Significant digits in the geoid height do not necessarily reflect accuracy.
 DC7220.GEOID18 height accuracy estimate available here.
 DC7220
 DC7220.Click photographs - Photos may exist for this station.
 DC7220
 DC7220.The dynamic height is computed by dividing the NAVD 88
 DC7220.geopotential number by the normal gravity value computed on the
 DC7220.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DC7220.degrees latitude (g = 980.6199 gals.).
 DC7220
 DC7220.The modeled gravity was interpolated from observed gravity values.
 DC7220
 DC7220;                    North         East    Units  Estimated Accuracy
 DC7220;SPC MD       -   135,765.6     502,426.6     MT  (+/- 3 meters HH1 GPS) 
 DC7220
 DC7220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2892604197(NAD 83)
 DC7220
 DC7220                          SUPERSEDED SURVEY CONTROL
 DC7220
 DC7220.No superseded survey control is available for this station.
 DC7220
 DC7220_MARKER: DR = REFERENCE MARK DISK
 DC7220_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DC7220_STAMPING: DENTON NO 2 1934
 DC7220_MARK LOGO: CGS
 DC7220_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DC7220_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DC7220+STABILITY: SURFACE MOTION
 DC7220_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DC7220+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2002
 DC7220
 DC7220  HISTORY     - Date     Condition        Report By
 DC7220  HISTORY     - 1934     MONUMENTED       CGS
 DC7220  HISTORY     - 20020529 GOOD             MDSHA
 DC7220
 DC7220                          STATION DESCRIPTION
 DC7220
 DC7220'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DC7220'THE STTAION IS LOCATED IN THE EAST CITY LIMITS OF DENTON, IN THE
 DC7220'TRIANGULAR AREA FORMED BY THE INTERSECTION OF MARKET AND GAY STREETS.
 DC7220'TO REACH THE STATION FROM THE POST OFFICE IN DENTON, GO EAST ALONG
 DC7220'MARKET STREET FOR 0.5 MI (0.8 KM) TO THE OLD RAIL ROAD CROSSING AND
 DC7220'THE STATION ON THE LEFT.  THE STATION IS A STANDARD REFERENCE MARK
 DC7220'DISK SET IN THE TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH
 DC7220'THE GROUND.  IT IS 6.5 FT (2.0 M) SOUTH OF POWER POLE NUMBER 1, 18.0
 DC7220'FT (5.5 M) WEST-SOUTHWEST OF THE CENTER LINE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2102 ***********************************************************************
 HU2102  DESIGNATION -  DENTON RM 4
 HU2102  PID         -  HU2102
 HU2102  STATE/COUNTY-  MD/CAROLINE
 HU2102  COUNTRY     -  US
 HU2102  USGS QUAD   -  DENTON (2017)
 HU2102
 HU2102                         *CURRENT SURVEY CONTROL
 HU2102  ______________________________________________________________________
 HU2102* NAD 83(1991) POSITION- 38 53 01.34389(N) 075 49 10.05625(W)   ADJUSTED
 HU2102* NAVD 88 ORTHO HEIGHT -    14.535 (meters)       47.69  (feet) ADJUSTED
 HU2102  ______________________________________________________________________
 HU2102  GEOID HEIGHT    -        -34.869 (meters)                     GEOID18
 HU2102  LAPLACE CORR    -         -3.26  (seconds)                    DEFLEC18
 HU2102  DYNAMIC HEIGHT  -         14.527 (meters)       47.66  (feet) COMP
 HU2102  MODELED GRAVITY -    980,040.5   (mgal)                       NAVD 88
 HU2102
 HU2102  HORZ ORDER      -  SECOND
 HU2102  VERT ORDER      -  SECOND    CLASS I
 HU2102
 HU2102.The horizontal coordinates were established by classical geodetic methods
 HU2102.and adjusted by the National Geodetic Survey in January 1992.
 HU2102
 HU2102.The orthometric height was determined by differential leveling and
 HU2102.adjusted by the NATIONAL GEODETIC SURVEY
 HU2102.in December 2004.
 HU2102
 HU2102.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2102.GEOID18 height accuracy estimate available here.
 HU2102
 HU2102.Click photographs - Photos may exist for this station.
 HU2102
 HU2102.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2102
 HU2102.The dynamic height is computed by dividing the NAVD 88
 HU2102.geopotential number by the normal gravity value computed on the
 HU2102.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2102.degrees latitude (g = 980.6199 gals.).
 HU2102
 HU2102.The modeled gravity was interpolated from observed gravity values.
 HU2102
 HU2102. The following values were computed from the NAD 83(1991) position.
 HU2102
 HU2102;                    North         East     Units Scale Factor Converg.
 HU2102;SPC MD       -   135,758.898   502,425.131   MT  0.99994986   +0 44 27.4
 HU2102;SPC MD       -   445,402.32  1,648,373.12   sFT  0.99994986   +0 44 27.4
 HU2102;UTM  18      - 4,304,190.585   428,924.987   MT  0.99966220   -0 30 52.0
 HU2102
 HU2102!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2102!SPC MD       -   1.00000319  x   0.99994986  =   0.99995305
 HU2102!UTM  18      -   1.00000319  x   0.99966220  =   0.99966539
 HU2102
 HU2102:                Primary Azimuth Mark                     Grid Az
 HU2102:SPC MD       -  SCHUYLER                                 354 05 00.1
 HU2102:UTM  18      -  SCHUYLER                                 355 20 19.5
 HU2102
 HU2102_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2892404190(NAD 83)
 HU2102
 HU2102|---------------------------------------------------------------------|
 HU2102| PID    Reference Object                     Distance      Geod. Az  |
 HU2102|                                                           dddmmss.s |
 HU2102| DC7220 DENTON RM 2                           6.926 METERS 01426     |
 HU2102| HU2004 BURRS RM 4                          APPROX. 8.0 KM 0810128.1 |
 HU2102| HU0805 DENTON                               27.567 METERS 10323     |
 HU2102| DC7222 DENTON RM 5                                        3023833.2 |
 HU2102| JU1314 SCHUYLER                            APPROX.17.3 KM 3544927.5 |
 HU2102|---------------------------------------------------------------------|
 HU2102
 HU2102                          SUPERSEDED SURVEY CONTROL
 HU2102
 HU2102  NAD 83(1986)-  38 53 01.33757(N)    075 49 10.07034(W) AD(       ) 2
 HU2102  NAD 27      -  38 53 00.93000(N)    075 49 11.31320(W) AD(       ) 2
 HU2102  NGVD 29 (07/19/86)   14.9    (m)           49.     (f) VERT ANG       
 HU2102
 HU2102.Superseded values are not recommended for survey control.
 HU2102
 HU2102.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2102.See file dsdata.pdf to determine how the superseded data were derived.
 HU2102
 HU2102_MARKER: DR = REFERENCE MARK DISK
 HU2102_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2102_STAMPING: DENTON NO 4 1961
 HU2102_MARK LOGO: CGS
 HU2102_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2102_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2102+STABILITY: SURFACE MOTION
 HU2102_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2102+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2003
 HU2102
 HU2102  HISTORY     - Date     Condition        Report By
 HU2102  HISTORY     - 1961     MONUMENTED       CGS
 HU2102  HISTORY     - 1987     GOOD             NGS
 HU2102  HISTORY     - 20020529 GOOD             MDSHA
 HU2102  HISTORY     - 20031122 GOOD             USPSQD
 HU2102
 HU2102                          STATION DESCRIPTION
 HU2102
 HU2102'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 HU2102'THE STATION IS LOCATED IN THE EAST CITY LIMITS OF DENTON, IN THE
 HU2102'TRIANGULAR BLOCK AT THE INTERSECTION OF MARKET AND GAY STREET AND ON
 HU2102'PROPERTY OWN BY THE NUTTLE MILLING COMPANY.
 HU2102'
 HU2102'TO REACH THE STATION FROM THE POST OFFICE IN DENTON, GO EAST ON
 HU2102'MARKET STREET FOR 0.55 MILE TO A RAIL ROAD CROSSING AND THE STATION
 HU2102'LOCATED ON THE LEFT AS DESCRIBED.
 HU2102'
 HU2102'THE STATION IS A STANDARD REFERENCE MARK DISK STAMPED DENTON NO 4
 HU2102'1961, SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 2
 HU2102'INCHES ABOVE THE GROUND SURFACE.  AN UNDERGROUND MARK WAS SET PLUMB
 HU2102'THE SURFACE MARK APPROXIMATELY 36 INCHES BELOW THE GROUND SURFACE
 HU2102'SET IN AN 8-INCH CONCRETE CYLINDER.  THE STATION MARK IS LOCATED
 HU2102'5.2 FEET EAST-SOUTHEAST OF A STANDARD METAL WITNESS AND MARKER,
 HU2102'28.6 FEET SOUTH-SOUTHWEST OF A POWERLINE POLE NUMBER 1, 34.0
 HU2102'FEET WEST-SOUTHWEST OF THE APPROXIMATE CENTER OF A GRAVELED
 HU2102'ROAD AND 40.0 FEET EAST-NORTHEAST OF THE RAILROAD TRACK.
 HU2102'
 HU2102'REFERENCE MARK 2 IS A STANDARD DISK STAMPED DENTON NO 2 1934, SET IN
 HU2102'A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND SURFACE.
 HU2102'IT IS 6.5 FEET SOUTH OF A POWERLINE POLE NUMBER 1, 18.0 FEET
 HU2102'WEST-SOUTHWEST OF THE APPROXIMATE CENTER OF THE GRAVELED ROAD,
 HU2102'24.7 FEET NORTHEAST OF THE WITNESS POST AND 57.5 FEET
 HU2102'EAST-NORTHEAST OF THE NORTH RAIL OF THE RAILROAD TRACK.
 HU2102'
 HU2102'REFERENCE MARK 5 (AZIMUTH MARK) IS A STANDARD DISK STAMPED DENTON
 HU2102'NO 5 1961, SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS
 HU2102'2 INCHES ABOVE THE GROUND SURFACE.  IT IS 1.5 FEET EAST OF A WHITE
 HU2102'RAILROAD SIGN, 1.7 FEET NORTHEAST OF A STANDARD METAL WITNESS POST
 HU2102'AND MARKER AND 15.0 FEET SOUTHWEST OF THE APPROXIMATE CENTER OF
 HU2102'THE MACADAM ROAD.
 HU2102'
 HU2102'TO REACH THE REFERENCE MARK 5 (AZIMUTH MARK) GO NORTHWEST ALONE
 HU2102'THE RAILROAD TRACKS FOR 0.13 MILE TO THE CROSSING AND THE REFERENCE
 HU2102'MARK 5 IS LOCATED ON THE LEFT.
 HU2102'
 HU2102'DENTON 1934 IS A STANDARD DISK STAMPED DENTON 1934, SET IN TOP OF A
 HU2102'SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND SURFACE.  IT
 HU2102'IS 17.5 FEET NORTH OF THE NORTHWEST CORNER OF A SMALL WHITE HOUSE,
 HU2102'FORMALLY A RAILROAD CAR, 95.1 FEET EAST OF A STANDARD METAL
 HU2102'WITNESS POST AND MARKER AND 38.0 FEET EAST-NORTHEAST OF THE
 HU2102'APPROXIMATE CENTER OF THE GRAVELED ROAD.
 HU2102'
 HU2102'A TRAVERSE MEASUREMENT WAS MADE FROM DENTON 1934 TO DENTON R.M. 4
 HU2102'DISTANCE AS SHOWN.
 HU2102'
 HU2102'HEIGHT OF LIGHT ABOVE STATION MARK 34.03 METERS.
 HU2102
 HU2102                          STATION RECOVERY (1987)
 HU2102
 HU2102'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU2102'THE DESIGNATED MARK WAS RECOVERED AS PREVIOUSLY DESCRIBED.
 HU2102'ALL MARKS WERE FOUND IN GOOD CONDITION AS DESCRIBED IN THE MOST
 HU2102'RECENT INFORMATION AVAILABLE.
 HU2102
 HU2102                          STATION RECOVERY (2002)
 HU2102
 HU2102'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2102'RECOVERED AS DESCRIBED.
 HU2102
 HU2102                          STATION RECOVERY (2003)
 HU2102
 HU2102'RECOVERY NOTE BY US POWER SQUADRON 2003 (KN)
 HU2102'WITNESS POST DOES NOT EXIST.  THE STATION IS FOUND ON THE PROPERTY OF
 HU2102'1010 GAY STREET EXTENDED IN DENTON.
 HU2102'
 HU2102'SEE RECOVERY NOTES FOR DENTON (HU0805).
 HU2102'
 HU2102'RM MARKS 2 AND 5 WERE ALSO FOUND IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2101 ***********************************************************************
 HU2101  DESIGNATION -  DENTON WEST POWERLINE TOWER
 HU2101  PID         -  HU2101
 HU2101  STATE/COUNTY-  MD/CAROLINE
 HU2101  COUNTRY     -  US
 HU2101  USGS QUAD   -  DENTON (2017)
 HU2101
 HU2101                         *CURRENT SURVEY CONTROL
 HU2101  ______________________________________________________________________
 HU2101* NAD 83(1991) POSITION- 38 53 35.05769(N) 075 49 56.88764(W)   ADJUSTED
 HU2101  ______________________________________________________________________
 HU2101  GEOID HEIGHT    -        -34.822 (meters)                     GEOID18
 HU2101  LAPLACE CORR    -         -3.36  (seconds)                    DEFLEC18
 HU2101  HORZ ORDER      -  THIRD
 HU2101
 HU2101.The horizontal coordinates were established by classical geodetic methods
 HU2101.and adjusted by the National Geodetic Survey in January 1992.
 HU2101
 HU2101.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2101.GEOID18 height accuracy estimate available here.
 HU2101
 HU2101.Click photographs - Photos may exist for this station.
 HU2101
 HU2101.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2101
 HU2101. The following values were computed from the NAD 83(1991) position.
 HU2101
 HU2101;                    North         East     Units Scale Factor Converg.
 HU2101;SPC MD       -   136,783.880   501,283.245   MT  0.99994989   +0 43 58.0
 HU2101;SPC MD       -   448,765.11  1,644,626.78   sFT  0.99994989   +0 43 58.0
 HU2101;UTM  18      - 4,305,240.038   427,806.153   MT  0.99966418   -0 31 21.7
 HU2101
 HU2101_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2780605240(NAD 83)
 HU2101
 HU2101                          SUPERSEDED SURVEY CONTROL
 HU2101
 HU2101  NAD 83(1986)-  38 53 35.05146(N)    075 49 56.90167(W) AD(       ) 3
 HU2101  NAD 27      -  38 53 34.64600(N)    075 49 58.14300(W) AD(       ) 3
 HU2101
 HU2101.Superseded values are not recommended for survey control.
 HU2101
 HU2101.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2101.See file dsdata.pdf to determine how the superseded data were derived.
 HU2101
 HU2101_MARKER: 55 = TOWER
 HU2101_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2101+SATELLITE: SATELLITE OBSERVATIONS - February 12, 2003
 HU2101
 HU2101  HISTORY     - Date     Condition        Report By
 HU2101  HISTORY     - 1934     FIRST OBSERVED   CGS
 HU2101  HISTORY     - 1943     GOOD             CGS
 HU2101  HISTORY     - 20030212 GOOD             USPSQD
 HU2101  HISTORY     - 20061021 GOOD             GEOCAC
 HU2101
 HU2101                          STATION DESCRIPTION
 HU2101
 HU2101'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (PLS)
 HU2101'THE STATION IS THE CENTER PAIRED INSULATOR NEAR THE TOP OF THE
 HU2101'STRUCTURAL-STEEL POWER-TRANSMISSION LINE MAST LOCATED ON THE W
 HU2101'BANK OF THE CHOPTANK RIVER, ABOUT 0.5 MILE NE OF THE HIGHWAY
 HU2101'BRIDGE ACROSS THE CHOPTANK RIVER AT DENTON, MARYLAND.
 HU2101
 HU2101                          STATION RECOVERY (2003)
 HU2101
 HU2101'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HU2101'ACCORDING TO THE LEAD ENGINEER AT CONECTIVE POWER DELIVERY THIS IS THE
 HU2101'TOWER FIRST OBSERVED IN 1934 AND RECOVERED IN 1943.  HOWEVER, IT IS
 HU2101'NOT KNOWN WHETHER THE INSULATORS PRESENTLY IN PLACE ARE IN THE SAME
 HU2101'POSITION AS THOSE ORIGNIALLY CITED.
 HU2101
 HU2101                          STATION RECOVERY (2006)
 HU2101
 HU2101'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 HU2101'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7982 ***********************************************************************
 AJ7982  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7982  DESIGNATION -  DERR
 AJ7982  PID         -  AJ7982
 AJ7982  STATE/COUNTY-  MD/FREDERICK
 AJ7982  COUNTRY     -  US
 AJ7982  USGS QUAD   -  FREDERICK (2016)
 AJ7982
 AJ7982                         *CURRENT SURVEY CONTROL
 AJ7982  ______________________________________________________________________
 AJ7982* NAD 83(2011) POSITION- 39 22 34.37637(N) 077 28 32.09727(W)   ADJUSTED
 AJ7982* NAD 83(2011) ELLIP HT-    96.890 (meters)        (06/27/12)   ADJUSTED
 AJ7982* NAD 83(2011) EPOCH   -  2010.00
 AJ7982* NAVD 88 ORTHO HEIGHT -   129.639 (meters)      425.32  (feet) ADJUSTED
 AJ7982  ______________________________________________________________________
 AJ7982  GEOID HEIGHT    -        -32.762 (meters)                     GEOID18
 AJ7982  NAD 83(2011) X  -  1,070,618.755 (meters)                     COMP
 AJ7982  NAD 83(2011) Y  - -4,819,528.265 (meters)                     COMP
 AJ7982  NAD 83(2011) Z  -  4,024,751.105 (meters)                     COMP
 AJ7982  LAPLACE CORR    -          3.43  (seconds)                    DEFLEC18
 AJ7982  DYNAMIC HEIGHT  -        129.568 (meters)      425.09  (feet) COMP
 AJ7982  MODELED GRAVITY -    980,080.7   (mgal)                       NAVD 88
 AJ7982
 AJ7982  VERT ORDER      -  SECOND    CLASS I
 AJ7982
 AJ7982  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7982  Standards:
 AJ7982         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7982            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7982  -------------------------------------------------------------------
 AJ7982  NETWORK    0.36   1.06           0.16   0.13   0.54      0.03259970
 AJ7982  -------------------------------------------------------------------
 AJ7982  Click here for local accuracies and other accuracy information.
 AJ7982
 AJ7982.The horizontal coordinates were established by GPS observations
 AJ7982.and adjusted by the National Geodetic Survey in June 2012.
 AJ7982
 AJ7982.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7982.been affixed to the stable North American tectonic plate. See 
 AJ7982.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7982
 AJ7982.The horizontal coordinates are valid at the epoch date displayed above
 AJ7982.which is a decimal equivalence of Year/Month/Day.
 AJ7982
 AJ7982.The orthometric height was determined by differential leveling and
 AJ7982.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7982.in November 2003.
 AJ7982
 AJ7982.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7982.GEOID18 height accuracy estimate available here.
 AJ7982
 AJ7982.Click photographs - Photos may exist for this station.
 AJ7982
 AJ7982.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7982
 AJ7982.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7982
 AJ7982.The ellipsoidal height was determined by GPS observations
 AJ7982.and is referenced to NAD 83.
 AJ7982
 AJ7982.The dynamic height is computed by dividing the NAVD 88
 AJ7982.geopotential number by the normal gravity value computed on the
 AJ7982.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7982.degrees latitude (g = 980.6199 gals.).
 AJ7982
 AJ7982.The modeled gravity was interpolated from observed gravity values.
 AJ7982
 AJ7982. The following values were computed from the NAD 83(2011) position.
 AJ7982
 AJ7982;                    North         East     Units Scale Factor Converg.
 AJ7982;SPC MD       -   189,878.663   359,021.732   MT  0.99998793   -0 17 54.6
 AJ7982;SPC MD       -   622,960.25  1,177,890.47   sFT  0.99998793   -0 17 54.6
 AJ7982;UTM  18      - 4,361,450.532   286,761.713   MT  1.00015988   -1 34 16.0
 AJ7982
 AJ7982!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7982!SPC MD       -   0.99998480  x   0.99998793  =   0.99997273
 AJ7982!UTM  18      -   0.99998480  x   1.00015988  =   1.00014468
 AJ7982
 AJ7982_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8676161450(NAD 83)
 AJ7982
 AJ7982|---------------------------------------------------------------------|
 AJ7982| PID    Reference Object                     Distance      Geod. Az  |
 AJ7982|                                                           dddmmss.s |
 AJ7982| DJ2618 DERR 2                              157.167 METERS 35340     |
 AJ7982|---------------------------------------------------------------------|
 AJ7982
 AJ7982                          SUPERSEDED SURVEY CONTROL
 AJ7982
 AJ7982  NAD 83(2007)-  39 22 34.37656(N)    077 28 32.09811(W) AD(2002.00) 0
 AJ7982  ELLIP H (02/10/07)   96.917  (m)                       GP(2002.00)    
 AJ7982  NAD 83(1991)-  39 22 34.37667(N)    077 28 32.09828(W) AD(       ) A
 AJ7982  ELLIP H (02/12/02)   96.910  (m)                       GP(       ) 4 1
 AJ7982  NAVD 88             129.64   (m)          425.3    (f) LEVELING    3  
 AJ7982  NAVD 88 (02/12/02)  129.7    (m)  GEOID99  model used  GPS OBS        
 AJ7982
 AJ7982.Superseded values are not recommended for survey control.
 AJ7982
 AJ7982.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7982.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7982
 AJ7982_MARKER: DD = SURVEY DISK
 AJ7982_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7982_STAMPING: DERR 1993
 AJ7982_MARK LOGO: MDSHA
 AJ7982_PROJECTION: RECESSED 12 CENTIMETERS
 AJ7982_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ7982_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7982+STABILITY: SURFACE MOTION
 AJ7982_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7982+SATELLITE: SATELLITE OBSERVATIONS - July 24, 2007
 AJ7982
 AJ7982  HISTORY     - Date     Condition        Report By
 AJ7982  HISTORY     - 1993     MONUMENTED       MDSHA
 AJ7982  HISTORY     - 20000327 GOOD             MDSHA
 AJ7982  HISTORY     - 20011105 GOOD             MDSHA
 AJ7982  HISTORY     - 20070410 GOOD             MDSHA
 AJ7982  HISTORY     - 20070724 GOOD             MDSHA
 AJ7982  HISTORY     - 20071105 MARK NOT FOUND   GEOMET
 AJ7982
 AJ7982                          STATION DESCRIPTION
 AJ7982
 AJ7982'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7982'THE STATION IS LOCATED ABOUT 5.6 MILES (9.0 KM) SOUTHWEST OF
 AJ7982'FREDERICK, 3.5 MILES (5.6 KM) NORTHWEST OF BUCKEYSTOWN, AND 9.1 MILES
 AJ7982'(14.6 KM) NORTHEAST OF BRUNSWICK.  TO REACH THE STATION FROM WHERE
 AJ7982'U.S.HIGHWAY 340 PASSES UNDER INTERSTATE 70, GO SOUTHWEST ON
 AJ7982'U.S.HIGHWAY 340 FOR 2.2 MILES (3.5 KM) TO THE MOUNT ZION ROAD EXIT
 AJ7982'(EXIT NUMBER 11) .  TAKE THE EXIT RAMP FOR 0.25 MILES (0.40 KM) TO
 AJ7982'MOUNT ZION ROAD LEADING WEST AND CAP STINE ROAD LEADING EAST.  TURN
 AJ7982'LEFT AND GO EAST FOR 0.15 MILES (0.24 KM) TO THE STATION ON THE RIGHT,
 AJ7982'SET IN A GRASS AREA BETWEEN CAP STINE ROAD, ELMER DERR ROAD AND THE
 AJ7982'EXIT RAMP FROM NORTH BOUND U.S.HIGHWAY 340.  THE STATION IS A STANDARD
 AJ7982'MARYLAND STATE HIGHWAY SURVEY DISK SET IN THE TOP OF A CONCRETE
 AJ7982'MONUMENT WHICH IS 0.4 FEET (12.2 CM) BELOW THE SURFACE OF THE GROUND.
 AJ7982'IT IS 82.6 FEET (25.2 M) WEST OF THE CENTER LINE OF CAP STINE ROAD,
 AJ7982'120.5 FEET (36.7 M) NORTH OF THE CENTER LINE ELMER DERR ROAD, 66.7
 AJ7982'FEET (20.3 M) SOUTH OF THE RAMP LEADING FROM U.S.HIGHWAY 340 TO CAP
 AJ7982'STINE ROAD, 175.0 FEET (53.3 M) SOUTH OF THE SOUTHWEST CORNER OF THE
 AJ7982'CAP STINE ROAD BRIDGE PASSING OVER U.S.HIGHWAY 340, AND 1.0 FOOT (0.3
 AJ7982'M) EAST OF A CARSONITE WITNESS POST.
 AJ7982
 AJ7982                          STATION RECOVERY (2001)
 AJ7982
 AJ7982'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ7982'RECOVERED AS DESCRIBED.
 AJ7982
 AJ7982                          STATION RECOVERY (2007)
 AJ7982
 AJ7982'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 AJ7982'RECOVERED AS DESCRIBED.
 AJ7982
 AJ7982                          STATION RECOVERY (2007)
 AJ7982
 AJ7982'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (DCS)
 AJ7982'RECOVERED IN GOOD CONDITION.
 AJ7982
 AJ7982                          STATION RECOVERY (2007)
 AJ7982
 AJ7982'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2007 (KNT)
 AJ7982'AREA IS NOW PAVED OVER, MARK ASSUMED TO BE DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2618 ***********************************************************************
 DJ2618  DESIGNATION -  DERR 2
 DJ2618  PID         -  DJ2618
 DJ2618  STATE/COUNTY-  MD/FREDERICK
 DJ2618  COUNTRY     -  US
 DJ2618  USGS QUAD   -  FREDERICK (2016)
 DJ2618
 DJ2618                         *CURRENT SURVEY CONTROL
 DJ2618  ______________________________________________________________________
 DJ2618* NAD 83(2011) POSITION- 39 22 39.44148(N) 077 28 32.82219(W)   ADJUSTED
 DJ2618* NAD 83(2011) ELLIP HT-    95.114 (meters)        (06/27/12)   ADJUSTED
 DJ2618* NAD 83(2011) EPOCH   -  2010.00
 DJ2618* NAVD 88 ORTHO HEIGHT -   127.864 (meters)      419.50  (feet) ADJUSTED
 DJ2618  ______________________________________________________________________
 DJ2618  GEOID HEIGHT    -        -32.765 (meters)                     GEOID18
 DJ2618  NAD 83(2011) X  -  1,070,580.028 (meters)                     COMP
 DJ2618  NAD 83(2011) Y  - -4,819,433.944 (meters)                     COMP
 DJ2618  NAD 83(2011) Z  -  4,024,870.725 (meters)                     COMP
 DJ2618  LAPLACE CORR    -          3.39  (seconds)                    DEFLEC18
 DJ2618  DYNAMIC HEIGHT  -        127.795 (meters)      419.27  (feet) COMP
 DJ2618  MODELED GRAVITY -    980,080.9   (mgal)                       NAVD 88
 DJ2618
 DJ2618  VERT ORDER      -  SECOND    CLASS I
 DJ2618
 DJ2618  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ2618  Standards:
 DJ2618         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ2618            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ2618  -------------------------------------------------------------------
 DJ2618  NETWORK    0.30   0.90           0.13   0.11   0.46     -0.01793612
 DJ2618  -------------------------------------------------------------------
 DJ2618  Click here for local accuracies and other accuracy information.
 DJ2618
 DJ2618.The horizontal coordinates were established by GPS observations
 DJ2618.and adjusted by the National Geodetic Survey in June 2012.
 DJ2618
 DJ2618.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ2618.been affixed to the stable North American tectonic plate. See 
 DJ2618.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ2618
 DJ2618.The horizontal coordinates are valid at the epoch date displayed above
 DJ2618.which is a decimal equivalence of Year/Month/Day.
 DJ2618
 DJ2618.The orthometric height was determined by differential leveling and
 DJ2618.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2618.in October 2007.
 DJ2618
 DJ2618.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2618.GEOID18 height accuracy estimate available here.
 DJ2618
 DJ2618.Click photographs - Photos may exist for this station.
 DJ2618
 DJ2618.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ2618
 DJ2618.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ2618
 DJ2618.The ellipsoidal height was determined by GPS observations
 DJ2618.and is referenced to NAD 83.
 DJ2618
 DJ2618.The dynamic height is computed by dividing the NAVD 88
 DJ2618.geopotential number by the normal gravity value computed on the
 DJ2618.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2618.degrees latitude (g = 980.6199 gals.).
 DJ2618
 DJ2618.The modeled gravity was interpolated from observed gravity values.
 DJ2618
 DJ2618. The following values were computed from the NAD 83(2011) position.
 DJ2618
 DJ2618;                    North         East     Units Scale Factor Converg.
 DJ2618;SPC MD       -   190,034.956   359,005.196   MT  0.99998814   -0 17 55.0
 DJ2618;SPC MD       -   623,473.02  1,177,836.21   sFT  0.99998814   -0 17 55.0
 DJ2618;UTM  18      - 4,361,607.180   286,748.650   MT  1.00015995   -1 34 16.7
 DJ2618
 DJ2618!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ2618!SPC MD       -   0.99998508  x   0.99998814  =   0.99997322
 DJ2618!UTM  18      -   0.99998508  x   1.00015995  =   1.00014503
 DJ2618
 DJ2618_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8674861607(NAD 83)
 DJ2618
 DJ2618|---------------------------------------------------------------------|
 DJ2618| PID    Reference Object                     Distance      Geod. Az  |
 DJ2618|                                                           dddmmss.s |
 DJ2618| AJ7982 DERR                                157.167 METERS 17340     |
 DJ2618|---------------------------------------------------------------------|
 DJ2618
 DJ2618                          SUPERSEDED SURVEY CONTROL
 DJ2618
 DJ2618  NAD 83(2007)-  39 22 39.44166(N)    077 28 32.82299(W) AD(2002.00) B
 DJ2618  ELLIP H (11/08/11)   95.141  (m)                       GP(2002.00) 4 1
 DJ2618  NAVD 88             127.86   (m)          419.5    (f) LEVELING    3  
 DJ2618
 DJ2618.Superseded values are not recommended for survey control.
 DJ2618
 DJ2618.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ2618.See file dsdata.pdf to determine how the superseded data were derived.
 DJ2618
 DJ2618_MARKER: DD = SURVEY DISK
 DJ2618_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ2618_STAMPING: DERR 2 2007
 DJ2618_MARK LOGO: MDSHA
 DJ2618_PROJECTION: FLUSH
 DJ2618_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ2618_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ2618+STABILITY: SURFACE MOTION
 DJ2618_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ2618+SATELLITE: SATELLITE OBSERVATIONS - August 08, 2024
 DJ2618
 DJ2618  HISTORY     - Date     Condition        Report By
 DJ2618  HISTORY     - 20070405 MONUMENTED       MDSHA
 DJ2618  HISTORY     - 20070724 GOOD             MDSHA
 DJ2618  HISTORY     - 20131023 GOOD             BASE9
 DJ2618  HISTORY     - 20181010 GOOD             INDIV
 DJ2618  HISTORY     - 20190716 GOOD             NGS
 DJ2618  HISTORY     - 20240808 GOOD             MDSHA
 DJ2618
 DJ2618                          STATION DESCRIPTION
 DJ2618
 DJ2618'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007
 DJ2618'THE MARK IS LOCATED ABOUT 5.9 MI (9.5 KM) SOUTHEAST OF MIDDLETOWN, 4.3
 DJ2618'MI (6.9 KM) SOUTHWEST OF FREDERICK AND 3.8 MI (6.1 KM) NORTHWEST OF
 DJ2618'BUCKEYSTOWN.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DJ2618'
 DJ2618'THE INTERSTATE HIGHWAY 70 OVERPASS OVER US HIGHWAY 340/15, GO SOUTH ON
 DJ2618'US HIGHWAY 340/15 FOR 2.20 MI (3.5 KM) TO THE EXIT RAMP FOR MOUNT ZION
 DJ2618'ROAD.  GO WEST ON THE RAMP FOR 0.21 MI (0.3 KM) TO THE MARK ON THE
 DJ2618'LEFT IN A GRASSY AREA BETWEEN US 340 AND THE EXIT RAMP.
 DJ2618'
 DJ2618'IT IS 114.5 FT (34.9 M) NORTH OF THE NORTH EDGE OF THE SHOULDER OF US
 DJ2618'340, 81.6 FT (24.9 M) WEST-SOUTHWEST OF THE END OF A CONCRETE CURB,
 DJ2618'74.2 FT (22.6 M) NORTHEAST OF THE ENDO OF A METAL GUARD RAIL, 47.5 FT
 DJ2618'(14.5 M) EAST-NORTHEAST OF THE SOUTHEAST CORNER OF THE CONCRETE BASE
 DJ2618'FOR AN ELECTRICAL TRANSFORMER BOX, 30.4 FT (9.3 M) NORTH OF A
 DJ2618'CARSONITE WITNESS POST, 10.1 FT (3.1 M) SOUTH OF THE FACE OF THE
 DJ2618'CONCRETE CURB ON THE SOUTH SIDE OF THE EXIT RAMP, SET IN THE TOP OF A
 DJ2618'12-INCH (30 CM) ROUND CONCRETE POST.
 DJ2618
 DJ2618                          STATION RECOVERY (2007)
 DJ2618
 DJ2618'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (DCS)
 DJ2618'RECOVERED IN GOOD CONDITION.
 DJ2618
 DJ2618                          STATION RECOVERY (2013)
 DJ2618
 DJ2618'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 DJ2618'WITNESS POST HAS BEEN OBLITERATED BY MOWING EQUIPMENT.
 DJ2618
 DJ2618                          STATION RECOVERY (2018)
 DJ2618
 DJ2618'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2018 (WRA)
 DJ2618'RECOVERED AS DESCRIBED, USED FOR STATIC GPS SURVEY.
 DJ2618
 DJ2618                          STATION RECOVERY (2019)
 DJ2618
 DJ2618'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 DJ2618'THE STATION IS LOCATED ABOUT 5.9 MI (9.5 KM) SOUTHEAST OF MIDDLETOWN,
 DJ2618'4.3 MI (6.9 KM) SOUTHWEST OF FREDERICK AND 3.8 MI (6.1 KM) NORTHWEST
 DJ2618'OF BUCKEYSTOWN.
 DJ2618'
 DJ2618'IT IS 71 FT (21.6 M) NORTHEAST OF THE END OF THE GUARD RAIL, 104 FT
 DJ2618'(31.7 M) EAST-NORTHEAST OF THE LIGHT POLE, 50 FT (15.2 M) EAST OF A
 DJ2618'METAL COVER AND 9 FT (2.7 M) SOUTH OF THE CURB.
 DJ2618
 DJ2618                          STATION RECOVERY (2024)
 DJ2618
 DJ2618'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 DJ2618'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2185 ***********************************************************************
 JV2185  DESIGNATION -  DERWOOD BORR
 JV2185  PID         -  JV2185
 JV2185  STATE/COUNTY-  MD/MONTGOMERY
 JV2185  COUNTRY     -  US
 JV2185  USGS QUAD   -  ROCKVILLE (2016)
 JV2185
 JV2185                         *CURRENT SURVEY CONTROL
 JV2185  ______________________________________________________________________
 JV2185* NAD 83(1986) POSITION- 39 06 56.     (N) 077 09 40.     (W)   SCALED
 JV2185* NAVD 88 ORTHO HEIGHT -   144.005 (meters)      472.46  (feet) ADJUSTED
 JV2185  ______________________________________________________________________
 JV2185  GEOID HEIGHT    -        -31.719 (meters)                     GEOID18
 JV2185  DYNAMIC HEIGHT  -        143.929 (meters)      472.21  (feet) COMP
 JV2185  MODELED GRAVITY -    980,100.9   (mgal)                       NAVD 88
 JV2185
 JV2185  VERT ORDER      -  FIRST     CLASS II
 JV2185
 JV2185.The horizontal coordinates were scaled from a map and have
 JV2185.an estimated accuracy of +/- 6 seconds.
 JV2185
 JV2185.The orthometric height was determined by differential leveling and
 JV2185.adjusted by the NATIONAL GEODETIC SURVEY
 JV2185.in June 1991.
 JV2185
 JV2185.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2185.GEOID18 height accuracy estimate available here.
 JV2185
 JV2185.Click photographs - Photos may exist for this station.
 JV2185
 JV2185.The dynamic height is computed by dividing the NAVD 88
 JV2185.geopotential number by the normal gravity value computed on the
 JV2185.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2185.degrees latitude (g = 980.6199 gals.).
 JV2185
 JV2185.The modeled gravity was interpolated from observed gravity values.
 JV2185
 JV2185;                    North         East    Units  Estimated Accuracy
 JV2185;SPC MD       -   160,850.      386,070.      MT  (+/- 180 meters Scaled)
 JV2185
 JV2185_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ131318(NAD 83)
 JV2185
 JV2185                          SUPERSEDED SURVEY CONTROL
 JV2185
 JV2185  NGVD 29 (11/26/84)  144.220  (m)          473.16   (f) ADJUSTED    1 2
 JV2185
 JV2185.Superseded values are not recommended for survey control.
 JV2185
 JV2185.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2185.See file dsdata.pdf to determine how the superseded data were derived.
 JV2185
 JV2185_MARKER: Z = SEE DESCRIPTION
 JV2185_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2185_SP_SET: BUILDING
 JV2185_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2185
 JV2185  HISTORY     - Date     Condition        Report By
 JV2185  HISTORY     - UNK      MONUMENTED       BORR
 JV2185  HISTORY     - 1938     GOOD             CGS
 JV2185
 JV2185                          STATION DESCRIPTION
 JV2185
 JV2185'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2185'AT DERWOOD.
 JV2185'AT DERWOOD, MONTGOMERY COUNTY ON THE BALTIMORE AND OHIO
 JV2185'RAILROAD, NEAR THE STATION, 120 FEET NORTHEAST OF THE CENTER
 JV2185'LINE OF THE NORTH-BOUND TRACK, AT THE DERWOOD FLOUR AND FEED
 JV2185'MILL, AT THE SOUTHEAST CORNER OF THE BUILDING, 6 INCHES FROM THE
 JV2185'CORNER, AND LEVEL WITH THE RAILS.  THE TOP OF A VERTICAL RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6665 ***********************************************************************
 HV6665  DESIGNATION -  DESERT MSFC 1908
 HV6665  PID         -  HV6665
 HV6665  STATE/COUNTY-  MD/ST MARYS
 HV6665  COUNTRY     -  US
 HV6665  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6665
 HV6665                         *CURRENT SURVEY CONTROL
 HV6665  ______________________________________________________________________
 HV6665* NAD 83(1991) POSITION- 38 15 46.87029(N) 076 23 56.17526(W)   ADJUSTED
 HV6665* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6665  ______________________________________________________________________
 HV6665  GEOID HEIGHT    -        -34.690 (meters)                     GEOID18
 HV6665  LAPLACE CORR    -         -6.22  (seconds)                    DEFLEC18
 HV6665  HORZ ORDER      -  THIRD
 HV6665
 HV6665.The horizontal coordinates were established by classical geodetic methods
 HV6665.and adjusted by the National Geodetic Survey in January 1992.
 HV6665
 HV6665.The orthometric height was scaled from a topographic map.
 HV6665
 HV6665.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6665.GEOID18 height accuracy estimate available here.
 HV6665
 HV6665.Click photographs - Photos may exist for this station.
 HV6665
 HV6665.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6665
 HV6665. The following values were computed from the NAD 83(1991) position.
 HV6665
 HV6665;                    North         East     Units Scale Factor Converg.
 HV6665;SPC MD       -    66,371.119   452,603.650   MT  1.00000664   +0 22 38.1
 HV6665;SPC MD       -   217,752.58  1,484,917.14   sFT  1.00000664   +0 22 38.1
 HV6665;UTM  18      - 4,235,923.590   377,614.126   MT  0.99978447   -0 51 59.2
 HV6665
 HV6665!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6665!SPC MD       -   1.00000533  x   1.00000664  =   1.00001197
 HV6665!UTM  18      -   1.00000533  x   0.99978447  =   0.99978980
 HV6665
 HV6665_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7761435923(NAD 83)
 HV6665
 HV6665                          SUPERSEDED SURVEY CONTROL
 HV6665
 HV6665  NAD 83(1986)-  38 15 46.87014(N)    076 23 56.19106(W) AD(       ) 3
 HV6665  NAD 27      -  38 15 46.42500(N)    076 23 57.37100(W) AD(       ) 3
 HV6665  USSD        -  38 15 46.78600(N)    076 23 57.12300(W) AD(       ) 3
 HV6665
 HV6665.Superseded values are not recommended for survey control.
 HV6665
 HV6665.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6665.See file dsdata.pdf to determine how the superseded data were derived.
 HV6665
 HV6665_MARKER: K = CLAY TILE PIPE
 HV6665_SETTING: 0 = UNSPECIFIED SETTING
 HV6665_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6665
 HV6665  HISTORY     - Date     Condition        Report By
 HV6665  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6665  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6665
 HV6665                          STATION DESCRIPTION
 HV6665
 HV6665'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6665'STATION IS ON THE WESTERN SHORE OF CHESAPEAKE BAY, ABOUT 3
 HV6665'MILES S-SW OF CEDAR POINT LIGHT.  STATION IS ON SAND AND GRASS
 HV6665'LAND, ABOUT 25 YARDS W FROM ORDINARY HIGH-WATER MARK, ABOUT AT
 HV6665'LEVEL OF EXTREME HIGHWATER MARK, 40 YARDS S OF A FENCE, 10 YARDS
 HV6665'E OF A FENCE, 45 YARDS S OF A CREEK, ABOUT 50 YARDS N OF A
 HV6665'POINT OF PINE WOODS, AND ABOUT 300 YARDS E OF WOODS ACROSS
 HV6665'MARSH.  STATION MARK IS A 4-INCH DRAINTILE PIPE, PROJECTING
 HV6665'ABOUT 2 INCHES ABOVE SURFACE OF SAND.  REFERENCE MARK IS
 HV6665'MARKED BY A HOLE IN THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6665'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6665'LONG, WITH TOP PROJECTING 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6665'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS SET 5.29
 HV6665'METERS (17.36 FEET) FROM THE STATION N 31 DEG 24 MIN W.
 HV6665'OTHER DISTANCES AND BEARINGS ARE AS FOLLOWS--POINT OF
 HV6665'WOODS, 50 YARDS S 00 DEG 00 MIN W.  NAIL IN BLAZE IN 14-INCH PINE
 HV6665'TREE, 7.62 METERS (25.00 FEET), N 31 DEG 24 MIN W.  CHIMNEY ON
 HV6665'NEAR END OF HOUSE, 1/2 MILE, N 10 DEG 43 MIN E.  LARGE SQUARE
 HV6665'CHIMNEY ON LARGER OF TWO HOUSES, 1 MILE, N 18 DEG 53 MIN E.
 HV6665'NEAR END OF PEAK OF ROOF OF TARLETON HOUSE, 2 MILES, S 10 DEG
 HV6665'46 MIN E.
 HV6665
 HV6665                          STATION RECOVERY (1942)
 HV6665
 HV6665'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6665'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR 1-1/2
 HV6665'HOURS BUT NO TRACE OF IT COULD BE FOUND.  THE 14-INCH PINE TREE
 HV6665'HAS BEEN DESTROYED, AND THERE IS MUCH INDICATION OF THE SHORE
 HV6665'LINE SHIFTING AT THIS LOCATION.  THE AREA IS COVERED WITH
 HV6665'DRIFTWOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6952 ***********************************************************************
 JV6952  DESIGNATION -  DESI
 JV6952  PID         -  JV6952
 JV6952  STATE/COUNTY-  MD/CECIL
 JV6952  COUNTRY     -  US
 JV6952  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV6952
 JV6952                         *CURRENT SURVEY CONTROL
 JV6952  ______________________________________________________________________
 JV6952* NAD 83(2011) POSITION- 39 36 35.16459(N) 076 00 40.39264(W)   ADJUSTED
 JV6952* NAD 83(2011) ELLIP HT-    70.541 (meters)        (06/27/12)   ADJUSTED
 JV6952* NAD 83(2011) EPOCH   -  2010.00
 JV6952* NAVD 88 ORTHO HEIGHT -   103.609 (meters)      339.92  (feet) ADJUSTED
 JV6952  ______________________________________________________________________
 JV6952  GEOID HEIGHT    -        -33.101 (meters)                     GEOID18
 JV6952  NAD 83(2011) X  -  1,189,441.537 (meters)                     COMP
 JV6952  NAD 83(2011) Y  - -4,774,572.444 (meters)                     COMP
 JV6952  NAD 83(2011) Z  -  4,044,744.932 (meters)                     COMP
 JV6952  LAPLACE CORR    -         -1.36  (seconds)                    DEFLEC18
 JV6952  DYNAMIC HEIGHT  -        103.557 (meters)      339.75  (feet) COMP
 JV6952  MODELED GRAVITY -    980,126.8   (mgal)                       NAVD 88
 JV6952
 JV6952  VERT ORDER      -  SECOND    CLASS I
 JV6952
 JV6952  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6952  Standards:
 JV6952         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6952            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6952  -------------------------------------------------------------------
 JV6952  NETWORK    1.43   2.21           0.65   0.50   1.13      0.11154906
 JV6952  -------------------------------------------------------------------
 JV6952  Click here for local accuracies and other accuracy information.
 JV6952
 JV6952.The horizontal coordinates were established by GPS observations
 JV6952.and adjusted by the National Geodetic Survey in June 2012.
 JV6952
 JV6952.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6952.been affixed to the stable North American tectonic plate. See 
 JV6952.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6952
 JV6952.The horizontal coordinates are valid at the epoch date displayed above
 JV6952.which is a decimal equivalence of Year/Month/Day.
 JV6952
 JV6952.The orthometric height was determined by differential leveling and
 JV6952.adjusted by the NATIONAL GEODETIC SURVEY
 JV6952.in June 1995.
 JV6952
 JV6952.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6952.GEOID18 height accuracy estimate available here.
 JV6952
 JV6952.Click photographs - Photos may exist for this station.
 JV6952
 JV6952.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6952
 JV6952.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6952
 JV6952.The ellipsoidal height was determined by GPS observations
 JV6952.and is referenced to NAD 83.
 JV6952
 JV6952.The dynamic height is computed by dividing the NAVD 88
 JV6952.geopotential number by the normal gravity value computed on the
 JV6952.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6952.degrees latitude (g = 980.6199 gals.).
 JV6952
 JV6952.The modeled gravity was interpolated from observed gravity values.
 JV6952
 JV6952. The following values were computed from the NAD 83(2011) position.
 JV6952
 JV6952;                    North         East     Units Scale Factor Converg.
 JV6952;SPC MD       -   216,162.142   484,915.443   MT  1.00003186   +0 37 14.1
 JV6952;SPC MD       -   709,191.96  1,590,926.75   sFT  1.00003186   +0 37 14.1
 JV6952;UTM  18      - 4,384,935.159   413,192.352   MT  0.99969277   -0 38 41.1
 JV6952
 JV6952!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6952!SPC MD       -   0.99998893  x   1.00003186  =   1.00002079
 JV6952!UTM  18      -   0.99998893  x   0.99969277  =   0.99968171
 JV6952
 JV6952:                Primary Azimuth Mark                     Grid Az
 JV6952:SPC MD       -  LUCY                                     255 50 10.4
 JV6952:UTM  18      -  LUCY                                     257 06 05.6
 JV6952
 JV6952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1319284935(NAD 83)
 JV6952
 JV6952|---------------------------------------------------------------------|
 JV6952| PID    Reference Object                     Distance      Geod. Az  |
 JV6952|                                                           dddmmss.s |
 JV6952| JV6951 LUCY                                409.287 METERS 2562724.5 |
 JV6952|---------------------------------------------------------------------|
 JV6952
 JV6952                          SUPERSEDED SURVEY CONTROL
 JV6952
 JV6952  NAD 83(2007)-  39 36 35.16467(N)    076 00 40.39371(W) AD(2002.00) 0
 JV6952  ELLIP H (02/10/07)   70.572  (m)                       GP(2002.00)    
 JV6952  ELLIP H (08/30/02)   70.569  (m)                       GP(       ) 4 2
 JV6952  NAD 83(1991)-  39 36 35.16449(N)    076 00 40.39447(W) AD(       ) 1
 JV6952  ELLIP H (09/15/92)   70.575  (m)                       GP(       ) 4 1
 JV6952  NGVD 29 (09/15/92)  103.9    (m)  GEOID90  model used  GPS OBS        
 JV6952
 JV6952.Superseded values are not recommended for survey control.
 JV6952
 JV6952.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6952.See file dsdata.pdf to determine how the superseded data were derived.
 JV6952
 JV6952_MARKER: DD = SURVEY DISK
 JV6952_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6952_STAMPING: DESI 1991
 JV6952_MARK LOGO: MDSHA
 JV6952_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6952_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6952+STABILITY: SURFACE MOTION
 JV6952_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6952+SATELLITE: SATELLITE OBSERVATIONS - July 05, 2011
 JV6952
 JV6952  HISTORY     - Date     Condition        Report By
 JV6952  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6952  HISTORY     - 20010606 GOOD             DMW
 JV6952  HISTORY     - 20100909 GOOD             NGS
 JV6952  HISTORY     - 20110705 GOOD             INDIV
 JV6952
 JV6952                          STATION DESCRIPTION
 JV6952
 JV6952'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6952'THE MARKER IS LOCATED ABOUT 37.0 MI (59.5 KM) NORTHEAST OF BALTIMORE,
 JV6952'11.4 MI (18.3 KM) WEST OF ELKTON AND ALONG THE ENTRANCE ROAD TO THE
 JV6952'CHESAPEAKE HOUSE SERVICE AREA.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH
 JV6952'THE MARKER FROM A POINT WHERE BELVEDERE ROAD PASSES OVER INTERSTATE
 JV6952'HIGHWAY 95, GO NORTH ON INTERSTATE HIGHWAY 95 FOR 0.5 MI (0.8 KM) TO
 JV6952'THE ENTRANCE ROAD TO THE SERVICE AREA, GO NORTH-NORTHWEST ON ENTRANCE
 JV6952'ROAD FOR 0.25 MI (0.40 KM) TO THE MARKER ON THE RIGHT.  A MARYLAND
 JV6952'STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN A 0.8 FT (0.2 M)
 JV6952'ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE
 JV6952'GROUND.  IT IS 3.0 FT (0.9 M) EAST-NORTHEAST OF THE NORTHEAST EDGE OF
 JV6952'THE PAVED ENTRANCE ROAD, AND 96.0 FT (29.3 M) NORTHEAST OF A SIGN
 JV6952'READING CARS TRUCKS SUNOCO.
 JV6952
 JV6952                          STATION RECOVERY (2001)
 JV6952
 JV6952'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (CCW)
 JV6952'RECOVERED IN GOOD CONDITION.
 JV6952
 JV6952                          STATION RECOVERY (2010)
 JV6952
 JV6952'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV6952'RECOVERED IN GOOD CONDITION.
 JV6952
 JV6952                          STATION RECOVERY (2011)
 JV6952
 JV6952'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 JV6952'RECOVERED BY WRA (JFS)
 JV6952'DESCRIPTION IS ADEQUATE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4603 ***********************************************************************
 JV4603  DESIGNATION -  DETRICK
 JV4603  PID         -  JV4603
 JV4603  STATE/COUNTY-  MD/FREDERICK
 JV4603  COUNTRY     -  US
 JV4603  USGS QUAD   -  FREDERICK (2016)
 JV4603
 JV4603                         *CURRENT SURVEY CONTROL
 JV4603  ______________________________________________________________________
 JV4603* NAD 83(2011) POSITION- 39 26 21.51328(N) 077 25 38.76412(W)   ADJUSTED
 JV4603* NAD 83(2011) ELLIP HT-    83.947 (meters)        (06/27/12)   ADJUSTED
 JV4603* NAD 83(2011) EPOCH   -  2010.00
 JV4603* NAVD 88 ORTHO HEIGHT -   116.7   (meters)      383.    (feet) GPS OBS
 JV4603  ______________________________________________________________________
 JV4603  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV4603  GEOID HEIGHT    -        -33.120 (meters)                     GEOID93
 JV4603  GEOID HEIGHT    -        -32.799 (meters)                     GEOID18
 JV4603  NAD 83(2011) X  -  1,073,698.252 (meters)                     COMP
 JV4603  NAD 83(2011) Y  - -4,814,276.757 (meters)                     COMP
 JV4603  NAD 83(2011) Z  -  4,030,155.250 (meters)                     COMP
 JV4603  LAPLACE CORR    -          2.55  (seconds)                    DEFLEC18
 JV4603
 JV4603  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV4603  Standards:
 JV4603         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV4603            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV4603  -------------------------------------------------------------------
 JV4603  NETWORK    1.59   2.10           0.69   0.60   1.07      0.12758404
 JV4603  -------------------------------------------------------------------
 JV4603  Click here for local accuracies and other accuracy information.
 JV4603
 JV4603.The horizontal coordinates were established by GPS observations
 JV4603.and adjusted by the National Geodetic Survey in June 2012.
 JV4603
 JV4603.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV4603.been affixed to the stable North American tectonic plate. See 
 JV4603.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV4603
 JV4603.The horizontal coordinates are valid at the epoch date displayed above
 JV4603.which is a decimal equivalence of Year/Month/Day.
 JV4603
 JV4603.The orthometric height was determined by GPS observations and a
 JV4603.high-resolution geoid model.
 JV4603
 JV4603.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4603.GEOID18 height accuracy estimate available here.
 JV4603
 JV4603.Click photographs - Photos may exist for this station.
 JV4603
 JV4603.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV4603
 JV4603.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4603
 JV4603.The ellipsoidal height was determined by GPS observations
 JV4603.and is referenced to NAD 83.
 JV4603
 JV4603. The following values were computed from the NAD 83(2011) position.
 JV4603
 JV4603;                    North         East     Units Scale Factor Converg.
 JV4603;SPC MD       -   196,862.874   363,203.148   MT  0.99999815   -0 16 05.8
 JV4603;SPC MD       -   645,874.28  1,191,608.99   sFT  0.99999815   -0 16 05.8
 JV4603;UTM  18      - 4,368,341.159   291,097.994   MT  1.00013734   -1 32 33.4
 JV4603
 JV4603!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4603!SPC MD       -   0.99998683  x   0.99999815  =   0.99998498
 JV4603!UTM  18      -   0.99998683  x   1.00013734  =   1.00012417
 JV4603
 JV4603:                Primary Azimuth Mark                     Grid Az
 JV4603:SPC MD       -  CAMP DETRICK SOUTH WATER TANK            185 14 51.8
 JV4603:UTM  18      -  CAMP DETRICK SOUTH WATER TANK            186 31 19.4
 JV4603
 JV4603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9109768341(NAD 83)
 JV4603
 JV4603|---------------------------------------------------------------------|
 JV4603| PID    Reference Object                     Distance      Geod. Az  |
 JV4603|                                                           dddmmss.s |
 JV4603| CJ9641 DETRICK RM 1                         21.092 METERS 05756     |
 JV4603| JV4598 FREDERICK MUNICIPAL TANK            APPROX. 3.6 KM 1531856.8 |
 JV4603| JV4597 CAMP DETRICK SOUTH WATER TANK       APPROX. 0.6 KM 1845846.0 |
 JV4603| CJ9643 DETRICK RM 3                         22.548 METERS 32346     |
 JV4603| CJ9642 DETRICK RM 2                         22.554 METERS 32349     |
 JV4603| JV4602 CAMP DETRICK NORTH WATER TANK       101.452 METERS 34754     |
 JV4603|---------------------------------------------------------------------|
 JV4603
 JV4603                          SUPERSEDED SURVEY CONTROL
 JV4603
 JV4603  NAD 83(2007)-  39 26 21.51345(N)    077 25 38.76482(W) AD(2002.00) 0
 JV4603  ELLIP H (02/10/07)   83.970  (m)                       GP(2002.00)    
 JV4603  ELLIP H (08/30/02)   83.968  (m)                       GP(       ) 4 2
 JV4603  NAD 83(1991)-  39 26 21.51374(N)    077 25 38.76509(W) AD(       ) 1
 JV4603  ELLIP H (02/09/94)   83.909  (m)                       GP(       ) 4 1
 JV4603  NAD 83(1991)-  39 26 21.51302(N)    077 25 38.76364(W) AD(       ) 2
 JV4603  NAD 83(1986)-  39 26 21.51312(N)    077 25 38.77383(W) AD(       ) 2
 JV4603  NAD 27      -  39 26 21.15180(N)    077 25 39.82900(W) AD(       ) 2
 JV4603
 JV4603.Superseded values are not recommended for survey control.
 JV4603
 JV4603.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4603.See file dsdata.pdf to determine how the superseded data were derived.
 JV4603
 JV4603_MARKER: DS = TRIANGULATION STATION DISK
 JV4603_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4603_STAMPING: DETRICK 1958
 JV4603_MARK LOGO: CGS
 JV4603_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4603_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4603+STABILITY: SURFACE MOTION
 JV4603_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4603+SATELLITE: SATELLITE OBSERVATIONS - November 02, 2003
 JV4603
 JV4603  HISTORY     - Date     Condition        Report By
 JV4603  HISTORY     - 1958     MONUMENTED       CGS
 JV4603  HISTORY     - 1958     GOOD             CGS
 JV4603  HISTORY     - 1970     GOOD             NGS
 JV4603  HISTORY     - 19921228 GOOD             GREOMA
 JV4603  HISTORY     - 19930407 GOOD
 JV4603  HISTORY     - 20000110 GOOD             GEOMET
 JV4603  HISTORY     - 20031102 GOOD             USPSQD
 JV4603
 JV4603                          STATION DESCRIPTION
 JV4603
 JV4603'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4603'STATION IS LOCATED ABOUT 1-1/2 MILES NORTHWEST OF THE CENTER OF
 JV4603'FREDERICK, ON PROPERTY OF U.S. ARMY CAMP DETRICK AND ABOUT 300
 JV4603'FEET SOUTH OF THE NORTH ONE OF TWO WATER TANKS BELONGING TO THE
 JV4603'CAMP.  IT IS 101 FEET NORTHWEST OF THE NORTHWEST CORNER OF A
 JV4603'WHITE BARN, 97 FEET NORTH OF THE NORTH CORNER OF A WHITE HOUSE
 JV4603'AND 56-1/2 FEET SOUTH OF A BRACED POWERLINE POLE NO. A 26.  THE
 JV4603'MARK IS FLUSH WITH THE SURFACE OF THE GROUND AND THE DISK IS
 JV4603'STAMPED DETRICK 1958.
 JV4603'
 JV4603'REFERENCE MARK NO. 1 IS 88 FEET WEST OF THE NORTHWEST CORNER OF
 JV4603'A WHITE BARN AND 66 FEET EAST OF A BRACED POWERLINE POLE NO. A
 JV4603'26.  THE MARK IS FLUSH WITH THE SURFACE OF THE GROUND AND THE DISK
 JV4603'IS STAMPED DETRICK NO. 1 1958.
 JV4603'
 JV4603'REFERENCE MARK NO. 2 IS 39 FEET WEST OF A BRACED POWERLINE POLE
 JV4603'NO. A 26.  THE MARK IS FLUSH WITH THE SURFACE OF THE GROUND AND
 JV4603'THE DISK IS STAMPED DETRICK NO 2 1958.
 JV4603'
 JV4603'NO AZIMUTH MARK WAS SET.
 JV4603'
 JV4603'TO REACH FROM THE POST OFFICE IN FREDERICK, GO WEST ON
 JV4603'U.S. HIGHWAY 40 0.15 MILE TO THE JUNCTION OF U.S. HIGHWAY 15
 JV4603'(S. MARKET STREET), TURN RIGHT ON HIGHWAY 15,0.55 MILE TO SEVENTH
 JV4603'STREET, TURN LEFT ON SEVENTH STREET 1.2 MILE TO THE ENTRANCE TO
 JV4603'CAMP DETRICK.  HERE PASS THROUGH GATE AND CONTINUE ON SEVENTH
 JV4603'STREET 0.4 MILE TO WATER TANK ON THE RIGHT AND THE STATION AS
 JV4603'DESCRIBED.
 JV4603'
 JV4603'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV4603
 JV4603                          STATION RECOVERY (1958)
 JV4603
 JV4603'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV4603'RECOVERED IN GOOD CONDITION.
 JV4603
 JV4603                          STATION RECOVERY (1970)
 JV4603
 JV4603'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (LFS)
 JV4603'THE STATION AND REFERENCE MARK NO. 1 WERE RECOVERED AND FOUND TO
 JV4603'BE IN GOOD CONDITION.  THE TOP WAS FOUND BROKEN OFF OF REFERENCE
 JV4603'MARK NO. 2.  THE CAMP DETRICK WATER TANK, S ONE OF TWO, WAS NOT
 JV4603'VISIBLE FROM GROUND BECAUSE OF TREES.  A NEW REFERENCE MARK NO. 3
 JV4603'WAS ESTABLISHED IN THE APPROXIMATE LOCATION WHERE REFERENCE MARK
 JV4603'NO. 2 WAS LOCATED.
 JV4603'
 JV4603'FOLLOWING IS A COMPLETE DESCRIPTION--STATION IS LOCATED ABOUT
 JV4603'1.5 MILES NORTHWEST OF THE CENTER OF FREDERICK, ON PROPERTY OF
 JV4603'U.S. ARMY CAMP DETRICK AND ABOUT 300 FEET SOUTH OF THE NORTH ONE
 JV4603'OF THREE TANKS, PAINTED ALTERNATE COLORS OF RED AND WHITE.  IT IS
 JV4603'195 FEET EAST-NORTHEAST OF THE CENTER OF INTERSECTION OF DITTO
 JV4603'AVE. AND STARK ST., 143.5 FEET EAST OF THE CENTERLINE OF DITTO
 JV4603'AVE., 96 FEET NORTHEAST OF THE NORTHEAST CORNER OF A WHITE
 JV4603'BRICK HOUSE, 73.5 FEET EAST OF A WATER HYDRANT, AND 1.5 FEET
 JV4603'WEST OF A METAL POST AND SIGN WITH LETTER U ON THE SIGN.
 JV4603'
 JV4603'REFERENCE MARK NO. 1 IS 66 FEET EAST OF A BRACED POWERLINE POLE
 JV4603'NO. A 26.  IT IS SET FLUSH WITH THE SURFACE OF THE GROUND AND THE
 JV4603'DISK IS STAMPED DETRICK NO 1 1958, NOTE 11A.
 JV4603'
 JV4603'REFERENCE MARK NO. 3 IS 39 FEET WEST OF A BRACED POWERLINE POLE
 JV4603'NO. A 26.  IT IS SET FLUSH WITH THE SURFACE OF THE GROUND AND THE
 JV4603'DISK IS STAMPED DETRICK NO 3 1958 1970, NOTE 11A.
 JV4603'
 JV4603'NO AZIMUTH MARK WAS SET.
 JV4603'
 JV4603'TO REACH FROM THE POST OFFICE IN FREDERICK.  GO WEST ON
 JV4603'U.S. HIGHWAY NO. 40 FOR 0.15 MILE TO JUNCTION WITH U.S. HIGHWAY
 JV4603'15 (S. MARKET STREET), TURN RIGHT ON HIGHWAY 15 FOR 0.55 MILE TO
 JV4603'SEVENTH STREET, TURN LEFT ON SEVENTH STREET AND GO NORTH FOR 1.2
 JV4603'MILES TO THE ENTRANCE TO CAMP FT. DETRICK, PASS THROUGH GATE AND
 JV4603'CONTINUE STRAIGHT AHEAD, NORTH, ON DITTO AVENUE FOR 0.4 MILE TO
 JV4603'A LARGE WATER TANK PAINTED RED AND WHITE ON THE RIGHT AND THE
 JV4603'STATION AS DESCRIBED ABOUT 300 FEET SOUTH OF THIS TANK.
 JV4603'
 JV4603'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4603'NORTHWEST EDGE OF FREDERICK.
 JV4603
 JV4603                          STATION RECOVERY (1992)
 JV4603
 JV4603'RECOVERY NOTE BY GREENHORNE-OMARA 1992
 JV4603'RECOVERED IN GOOD CONDITION.
 JV4603
 JV4603                          STATION RECOVERY (1993)
 JV4603
 JV4603'RECOVERED 1993
 JV4603'RECOVERED IN GOOD CONDITION.
 JV4603
 JV4603                          STATION RECOVERY (2000)
 JV4603
 JV4603'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000
 JV4603'RECOVERED AS DESCRIBED.
 JV4603
 JV4603                          STATION RECOVERY (2003)
 JV4603
 JV4603'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4603'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6220 ***********************************************************************
 DN6220  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6220  DESIGNATION -  DEUCE
 DN6220  PID         -  DN6220
 DN6220  STATE/COUNTY-  MD/CECIL
 DN6220  COUNTRY     -  US
 DN6220  USGS QUAD   -  ELKTON (2016)
 DN6220
 DN6220                         *CURRENT SURVEY CONTROL
 DN6220  ______________________________________________________________________
 DN6220* NAD 83(2011) POSITION- 39 30 33.25972(N) 075 49 54.16585(W)   ADJUSTED
 DN6220* NAD 83(2011) ELLIP HT-   -15.687 (meters)        (06/27/12)   ADJUSTED
 DN6220* NAD 83(2011) EPOCH   -  2010.00
 DN6220* NAVD 88 ORTHO HEIGHT -    17.66  (meters)       57.9   (feet) GPS OBS
 DN6220  ______________________________________________________________________
 DN6220  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6220  GEOID HEIGHT    -        -33.324 (meters)                     GEOID03
 DN6220  GEOID HEIGHT    -        -33.353 (meters)                     GEOID18
 DN6220  NAD 83(2011) X  -  1,206,118.064 (meters)                     COMP
 DN6220  NAD 83(2011) Y  - -4,777,650.284 (meters)                     COMP
 DN6220  NAD 83(2011) Z  -  4,036,084.973 (meters)                     COMP
 DN6220  LAPLACE CORR    -         -1.04  (seconds)                    DEFLEC18
 DN6220
 DN6220  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6220  Standards:
 DN6220         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6220            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6220  -------------------------------------------------------------------
 DN6220  NETWORK    0.47   1.04           0.20   0.18   0.53      0.01771081
 DN6220  -------------------------------------------------------------------
 DN6220  Click here for local accuracies and other accuracy information.
 DN6220
 DN6220.The horizontal coordinates were established by GPS observations
 DN6220.and adjusted by the National Geodetic Survey in June 2012.
 DN6220
 DN6220.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6220.been affixed to the stable North American tectonic plate. See 
 DN6220.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6220
 DN6220.The horizontal coordinates are valid at the epoch date displayed above
 DN6220.which is a decimal equivalence of Year/Month/Day.
 DN6220
 DN6220.The orthometric height was determined by GPS observations and a
 DN6220.high-resolution geoid model using precise GPS observation and
 DN6220.processing techniques.
 DN6220
 DN6220.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6220.GEOID18 height accuracy estimate available here.
 DN6220
 DN6220.Click photographs - Photos may exist for this station.
 DN6220
 DN6220.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6220
 DN6220.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6220
 DN6220.The ellipsoidal height was determined by GPS observations
 DN6220.and is referenced to NAD 83.
 DN6220
 DN6220. The following values were computed from the NAD 83(2011) position.
 DN6220
 DN6220;                    North         East     Units Scale Factor Converg.
 DN6220;SPC MD       -   205,183.587   500,473.429   MT  1.00001090   +0 43 59.7
 DN6220;SPC MD       -   673,173.15  1,641,969.91   sFT  1.00001090   +0 43 59.7
 DN6220;UTM  18      - 4,373,620.013   428,499.143   MT  0.99966294   -0 31 45.0
 DN6220
 DN6220!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6220!SPC MD       -   1.00000246  x   1.00001090  =   1.00001336
 DN6220!UTM  18      -   1.00000246  x   0.99966294  =   0.99966540
 DN6220
 DN6220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2849973620(NAD 83)
 DN6220
 DN6220                          SUPERSEDED SURVEY CONTROL
 DN6220
 DN6220  NAD 83(2007)-  39 30 33.25980(N)    075 49 54.16646(W) AD(2002.00) 1
 DN6220  ELLIP H (02/23/12)  -15.647  (m)                       GP(2002.00) 4 1
 DN6220
 DN6220.Superseded values are not recommended for survey control.
 DN6220
 DN6220.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6220.See file dsdata.pdf to determine how the superseded data were derived.
 DN6220
 DN6220_MARKER: DD = SURVEY DISK
 DN6220_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6220_STAMPING: DEUCE 2008
 DN6220_MARK LOGO: MD-015
 DN6220_PROJECTION: FLUSH
 DN6220_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6220_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6220+STABILITY: SURFACE MOTION
 DN6220_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6220+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6220
 DN6220  HISTORY     - Date     Condition        Report By
 DN6220  HISTORY     - 20081204 MONUMENTED       GWS
 DN6220
 DN6220                          STATION DESCRIPTION
 DN6220
 DN6220'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6220'THE STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) NORTH-NORTHEAST OF
 DN6220'CECILTON, 6.7 MI (10.8 KM) SOUTH OF ELKTON AND 2.0 MI (3.2 KM)
 DN6220'SOUTHWEST OF CHESAPEAKE CITY.
 DN6220'
 DN6220'TO REACH FROM THE JUNCTION OF MD 310 AND MD 213, GO NORTH-NORTHEAST ON
 DN6220'MD 213 FOR 1.86 MI (3.0 KM) TO A SIDE ROAD ON THE LEFT.  TURN LEFT AND
 DN6220'GO WEST-NORTHWEST ON A SCHOOL ENTRANCE FOR 0.10 MI (0.2 KM) TO THE
 DN6220'STATION ON THE LEFT BETWEEN THE TENNIS COURTS AND THE BASEBALL FIELD..
 DN6220'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6220'CONCRETE MONUMENT ON THE WEST SIDE OF THE SOUTHERNMOST SET OF TENNIS
 DN6220'COURTS, 15.5 FT (4.7 M) EAST OF THE EASTERNMOST CORNER OF A MACADAM
 DN6220'PAD, 64.4 FT (19.6 M) NORTHWEST OF THE SOUTHEAST CORNER OF THE
 DN6220'SOUTHERNMOST SET OF COURTS AND 94.7 FT (28.9 M) SOUTHEAST OF THE
 DN6220'SOUTHEAST CORNER OF THE NORTHERNMOST SET OF COURTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5850 ***********************************************************************
 HV5850  DESIGNATION -  DEUX
 HV5850  PID         -  HV5850
 HV5850  STATE/COUNTY-  MD/TALBOT
 HV5850  COUNTRY     -  US
 HV5850  USGS QUAD   -  TRAPPE (2016)
 HV5850
 HV5850                         *CURRENT SURVEY CONTROL
 HV5850  ______________________________________________________________________
 HV5850* NAD 83(1991) POSITION- 38 42 29.62552(N) 076 07 04.81670(W)   ADJUSTED
 HV5850* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5850  ______________________________________________________________________
 HV5850  GEOID HEIGHT    -        -34.712 (meters)                     GEOID18
 HV5850  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 HV5850  HORZ ORDER      -  THIRD
 HV5850
 HV5850.The horizontal coordinates were established by classical geodetic methods
 HV5850.and adjusted by the National Geodetic Survey in January 1992.
 HV5850
 HV5850.The orthometric height was scaled from a topographic map.
 HV5850
 HV5850.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5850.GEOID18 height accuracy estimate available here.
 HV5850
 HV5850.Click photographs - Photos may exist for this station.
 HV5850
 HV5850.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5850
 HV5850. The following values were computed from the NAD 83(1991) position.
 HV5850
 HV5850;                    North         East     Units Scale Factor Converg.
 HV5850;SPC MD       -   115,988.129   476,712.167   MT  0.99995410   +0 33 12.9
 HV5850;SPC MD       -   380,537.72  1,564,013.17   sFT  0.99995410   +0 33 12.9
 HV5850;UTM  18      - 4,284,992.416   402,792.323   MT  0.99971636   -0 41 57.1
 HV5850
 HV5850!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5850!SPC MD       -   1.00000533  x   0.99995410  =   0.99995943
 HV5850!UTM  18      -   1.00000533  x   0.99971636  =   0.99972169
 HV5850
 HV5850:                Primary Azimuth Mark                     Grid Az
 HV5850:SPC MD       -  CRACK                                    252 18 27.5
 HV5850:UTM  18      -  CRACK                                    253 33 37.5
 HV5850
 HV5850_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0279284992(NAD 83)
 HV5850
 HV5850|---------------------------------------------------------------------|
 HV5850| PID    Reference Object                     Distance      Geod. Az  |
 HV5850|                                                           dddmmss.s |
 HV5850| HV5853 CAM                                 458.730 METERS 0561121.5 |
 HV5850| HV5854 CRACK                               476.863 METERS 2525140.4 |
 HV5850|---------------------------------------------------------------------|
 HV5850
 HV5850                          SUPERSEDED SURVEY CONTROL
 HV5850
 HV5850  NAD 83(1986)-  38 42 29.62186(N)    076 07 04.83278(W) AD(       ) 3
 HV5850  NAD 27      -  38 42 29.18500(N)    076 07 06.06900(W) AD(       ) 3
 HV5850  USSD        -  38 42 29.58300(N)    076 07 05.86200(W) AD(       ) 3
 HV5850
 HV5850.Superseded values are not recommended for survey control.
 HV5850
 HV5850.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5850.See file dsdata.pdf to determine how the superseded data were derived.
 HV5850
 HV5850_MARKER: H = DRILL HOLE
 HV5850_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5850_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5850
 HV5850  HISTORY     - Date     Condition        Report By
 HV5850  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5850  HISTORY     - 1940     GOOD             CGS
 HV5850  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5850
 HV5850                          STATION DESCRIPTION
 HV5850
 HV5850'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5850'ON THE SOUTHERN SHORE OF TRIPPE CREEK, ABOUT 1-1/4 MILES FROM TRED
 HV5850'AVON RIVER, IN AN ORCHARD, ABOUT 8 FEET ABOVE HIGH WATER, 50 YARDS
 HV5850'NNE OF A RAMBLING HOUSE, 20 YARDS SE OF TOP OF BANK, 14 YARDS SW
 HV5850'OF TOP OF BANK, 13 YARDS S OF POINT OF BANK AT DITCH, AND 3 YARDS
 HV5850'E OF DRAINAGE DITCH.  STATION IS MARKED BY A HOLE IN THE CENTER OF
 HV5850'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV5850'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV5850'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5850'TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN
 HV5850'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV5850'MONUMENT.  DISTANCES AND BEARINGS TO POINTS OF REFERENCE ARE AS
 HV5850'FOLLOWS--NEAR CORNER OF HOUSE, 51 YARDS, S 25 DEG 47 MIN W.  LEFT
 HV5850'PEAK OF BARN, 1 MILE, N 54 DEG 13 MIN W.  NAIL IN BLAZE IN 10-INCH
 HV5850'PEAR TREE, 7.43 METERS (24.38 FEET), N 51 DEG 42 MIN W.  NEAR
 HV5850'PEAK OF BARN, 3/4 MILE, N 25 DEG 19 MIN W.  LEFT PEAK OF LARGE
 HV5850'BARN, 5/8 MILE, N 7 DEG 0 MIN E.  NAIL IN BLAZE IN TWIN LOCUST
 HV5850'TREE, 11.66 METERS (38.2 FEET), N 12 DEG 43 MIN E.  NAIL IN BLAZE
 HV5850'IN 6-INCH PEAR TREE, 6.29 METERS (20.64 FEET), N 86 DEG 49 MIN E.
 HV5850'RIGHT CORNER OF HOUSE, 1/8 MILE, S 30 DEG 48 MIN E.
 HV5850
 HV5850                          STATION RECOVERY (1940)
 HV5850
 HV5850'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5850'STATION MARK RECOVERED IN GOOD CONDITION, FLUSH WITH SURFACE OF
 HV5850'GROUND AND COVERED WITH THICK BRUSH.  ALL OTHER REFERENCE TREES
 HV5850'MENTIONED IN THE ORIGINAL DESCRIPTION ARE NOW DESTROYED.
 HV5850'
 HV5850'STATION IS ON THE SOUTHERN SHORE OF TRIPPE CREEK, 1-1/4 MILES FROM
 HV5850'TRED AVON RIVER, IN AN ORCHARD ABOUT 8 FEET ABOVE HIGH WATER,
 HV5850'ORCHARD NOW GROWN IN WEEDS.  12.6 METERS SW OF EDGE OF ROW OF
 HV5850'CEDAR TREES, 14.0 METERS SE OF BANK 8 FEET HIGH, 5.2 METERS S OF A
 HV5850'6-INCH LOCUST TREE, AND 3 YARDS E OF DRAINAGE DITCH.
 HV5850'
 HV5850'OTHER DISTANCES AND BEARINGS TO POINTS OF REFERENCE ARE AS
 HV5850'FOLLOWS--15-INCH PEAR TREE, 7.4 METERS, N 51 DEG 42 MIN W, NEAR
 HV5850'CORNER OF HOUSE FOUNDATION NOW BEING DEMOLISHED, 51 YARDS, S 25
 HV5850'DEG 47 MIN W.
 HV5850
 HV5850                          STATION RECOVERY (1961)
 HV5850
 HV5850'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5850'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  ALL OF THE
 HV5850'REFERENCE TREES ARE GONE, THE AREA HAS BEEN CLEARED AND NOW IS A
 HV5850'LAWN.  THE PUBLISHED DESCRIPTION IS NOW INADEQUATE FOR RECOVERY OF
 HV5850'THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1967 ***********************************************************************
 HU1967  DESIGNATION -  DEVORE
 HU1967  PID         -  HU1967
 HU1967  STATE/COUNTY-  MD/CAROLINE
 HU1967  COUNTRY     -  US
 HU1967  USGS QUAD   -  HICKMAN (2016)
 HU1967
 HU1967                         *CURRENT SURVEY CONTROL
 HU1967  ______________________________________________________________________
 HU1967* NAD 83(1991) POSITION- 38 46 44.80598(N) 075 43 08.87523(W)   ADJUSTED
 HU1967* NAVD 88 ORTHO HEIGHT -    12.6   (meters)       41.    (feet) VERTCON3
 HU1967  ______________________________________________________________________
 HU1967  GEOID HEIGHT    -        -35.268 (meters)                     GEOID18
 HU1967  LAPLACE CORR    -         -2.88  (seconds)                    DEFLEC18
 HU1967  HORZ ORDER      -  SECOND
 HU1967
 HU1967.The horizontal coordinates were established by classical geodetic methods
 HU1967.and adjusted by the National Geodetic Survey in January 1992.
 HU1967
 HU1967.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1967.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1967
 HU1967.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1967.GEOID18 height accuracy estimate available here.
 HU1967
 HU1967.Click photographs - Photos may exist for this station.
 HU1967
 HU1967.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1967
 HU1967. The following values were computed from the NAD 83(1991) position.
 HU1967
 HU1967;                    North         East     Units Scale Factor Converg.
 HU1967;SPC MD       -   124,266.767   511,292.074   MT  0.99995126   +0 48 14.1
 HU1967;SPC MD       -   407,698.55  1,677,464.08   sFT  0.99995126   +0 48 14.1
 HU1967;UTM  18      - 4,292,510.481   437,535.591   MT  0.99964805   -0 27 01.5
 HU1967
 HU1967!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1967!SPC MD       -   1.00000356  x   0.99995126  =   0.99995482
 HU1967!UTM  18      -   1.00000356  x   0.99964805  =   0.99965161
 HU1967
 HU1967:                Primary Azimuth Mark                     Grid Az
 HU1967:SPC MD       -  HU1971                                   355 55 38.1
 HU1967:UTM  18      -  HU1971                                   357 10 53.7
 HU1967
 HU1967_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3753592510(NAD 83)
 HU1967
 HU1967|---------------------------------------------------------------------|
 HU1967| PID    Reference Object                     Distance      Geod. Az  |
 HU1967|                                                           dddmmss.s |
 HU1967| DC7229 DEVORE RM 3                          62.460 METERS 04452     |
 HU1967| DC7227 DEVORE RM 1                          21.841 METERS 07356     |
 HU1967| HU1966 BOUNDARY MONUMENT 22 DEL MD          35.079 METERS 11244     |
 HU1967| DC7228 DEVORE RM 2                          17.633 METERS 20519     |
 HU1967| HU1971 HU1971                              APPROX. 3.2 KM 3564352.2 |
 HU1967|---------------------------------------------------------------------|
 HU1967
 HU1967                          SUPERSEDED SURVEY CONTROL
 HU1967
 HU1967  NAD 83(1986)-  38 46 44.79958(N)    075 43 08.89143(W) AD(       ) 2
 HU1967  NAD 27      -  38 46 44.38920(N)    075 43 10.14480(W) AD(       ) 2
 HU1967  NGVD 29 (07/19/86)   12.8    (m)           42.     (f) VERT ANG       
 HU1967
 HU1967.Superseded values are not recommended for survey control.
 HU1967
 HU1967.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1967.See file dsdata.pdf to determine how the superseded data were derived.
 HU1967
 HU1967_MARKER: DS = TRIANGULATION STATION DISK
 HU1967_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HU1967_STAMPING: DEVORE 1962
 HU1967_MARK LOGO: CGS
 HU1967_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1967
 HU1967  HISTORY     - Date     Condition        Report By
 HU1967  HISTORY     - 1962     MONUMENTED       CGS
 HU1967
 HU1967                          STATION DESCRIPTION
 HU1967
 HU1967'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1967'THE STATION IS LOCATED ABOUT 6.5 MILES NORTHEAST OF FEDERALSBURG,
 HU1967'MARYLAND, 6.5 MILES WEST-NORTHWEST OF BRIDGEVILLE, DELAWARE, IN
 HU1967'A DENSE WOODS AND BRUSH AND ON PROPERTY OWNED BY MISS SADIE DE
 HU1967'VORE.
 HU1967'
 HU1967'TO REACH THE STATION FROM THE RAILROAD STATION IN BRIDGEVILLE,
 HU1967'DELAWARE.  GO NORTHWEST ON STATE HIGHWAY 404 FOR 6.5 MILES TO A
 HU1967'CROSSROAD, THIS IS ABOUT 1.05 MILE SOUTHEAST OF THE FOUNTAINVILLE,
 HU1967'INTERSTATE LOOKOUT TOWER.  TURN LEFT AND GO SOUTHWEST ON A
 HU1967'BLACKTOP ROAD FOR 1.05 MILE TO A NARROW GRADED ROAD ON THE RIGHT,
 HU1967'WEST SIDE OF THE BLACKTOP ROAD.  TURN RIGHT AND GO WEST ON THE
 HU1967'NARROW BLADED ROAD FOR 0.45 MILE TO A DRIVEWAY ON THE LEFT, SOUTH
 HU1967'SIDE OF THE ROAD.  TURN LEFT AND GO SOUTH ON DRIVEWAY FOR
 HU1967'ABOUT 200.0 FEET TO THE NORTHEAST CORNER OF FIELD, JUST AFTER
 HU1967'PASSING A TRAILER HOUSE RESIDENCE ON THE LEFT.  CONTINUE
 HU1967'SOUTH ON A DIM TRACK FIELD ROAD FOR 0.25 MILE TO THE SOUTHEAST
 HU1967'CORNER OF A CULTIVATED FIELD AND NORTHWEST CORNER OF TIMBER AND
 HU1967'A TRACK WOODS ROAD.  CONTINUE SOUTH-SOUTHWEST ON THE TRACK
 HU1967'WOODS ROAD FOR 0.2 MILE TO A DEEP HOLE OFF THE WOODS ROAD TO
 HU1967'THE LEFT, APPEARS TO HAVE BEEN AN OLD WELL AT ONE TIME AND A
 HU1967'10-INCH TRIANGULAR BLAZED PINE TREE AND A DIM TRACK WOODS ROAD
 HU1967'ON THE LEFT.  TURN LEFT AND GO SOUTH ON THE DIM TRACK WOODS
 HU1967'ROAD FOR 0.1 MILE TO A 10-INCH TRIANGULAR BLAZED OAK TREE, A
 HU1967'STANDARD METAL WITNESS POST AND THE STATION.
 HU1967'
 HU1967'THE STATION MARK, A STANDARD DISK STAMPED DEVORE 1962, IS SECURED
 HU1967'TO A 5/8 COPPER ROD DRIVEN INTO THE GROUND AND REINFORCED BY
 HU1967'CONCRETE PROJECTING ABOUT 3 INCHES ABOVE THE SURFACE OF THE
 HU1967'GROUND.  IT IS 30.0 FEET SOUTH OF A 10-INCH TRIANGULAR BLAZED
 HU1967'OAK TREE, 22.9 FEET EAST OF A THREE-TRUNKED OAK TREE AND 5.8 FEET
 HU1967'NORTHWEST OF A STANDARD METAL WITNESS POST AND MARKER.
 HU1967'
 HU1967'REFERENCE MARK 1, A STANDARD DISK STAMPED DEVORE NO 1 1962, IS
 HU1967'SECURED TO THE TOP OF A 5/8 INCH COPPER ROD, DRIVEN INTO THE
 HU1967'GROUND AND REINFORCED BY CONCRETE, PROJECTING ABOUT 3 INCHES
 HU1967'ABOVE THE SURFACE OF THE GROUND.  IT IS 74.7 FEET EAST OF A
 HU1967'STANDARD METAL WITNESS POST AND MARKER, 54.6 FEET EAST OF A
 HU1967'10-INCH TRIANGULAR BLAZED WHITE OAK TREE AND 3.3 FEET NORTHWEST
 HU1967'OF A 10-INCH WHITE OAK TREE AND ABOUT STATION ELEVATION.
 HU1967'
 HU1967'REFERENCE MARK 2, A STANDARD DISK STAMPED DEVORE NO 2 1962,
 HU1967'SECURED TO THE TOP OF A 5/8 INCH COPPER ROD, DRIVEN INTO THE
 HU1967'GROUND AND REINFORCED BY CONCRETE, PROJECTING ABOUT 3 INCHES
 HU1967'ABOVE THE SURFACE OF THE GROUND.  IT IS 59.9 FEET SOUTH-SOUTHWEST
 HU1967'OF A STANDARD METAL WITNESS POST AND MARKER, 10.0 FEET EAST OF
 HU1967'A 10-INCH WHITE OAK TREE.
 HU1967'
 HU1967'REFERENCE MARK 3, A STANDARD DISK STAMPED DEVORE NO 3 1962, IS
 HU1967'SECURED TO THE TOP OF A 5/8 INCH COPPER ROD DRIVEN INTO THE GROUND
 HU1967'AND REINFORCED BY CONCRETE, PROJECTING ABOUT 3 INCHES ABOVE THE
 HU1967'SURFACE OF THE GROUND.  IT IS 10.3 FEET SOUTH OF THE CENTERLINE OF
 HU1967'WOODS ROAD, 10.2 FEET EAST-SOUTHEAST OF A 12-INCH WHITE OAK TREE,
 HU1967'1.6 FEET EAST OF A STANDARD METAL WITNESS POST AND MARKER AND
 HU1967'ABOUT STATION ELEVATION.
 HU1967'
 HU1967'BOUNDARY MONUMENT NO 22, A 12-INCH SQUARE GRANITE STONE PROJECTING
 HU1967'ABOUT 30 INCHES ABOVE THE SURFACE OF THE GROUND, WITH THE LETTER
 HU1967'M CUT IN ON ITS WEST SIDE AND P ON THE EAST SIDE, A SMALL CROSS
 HU1967'WAS INSCRIBED IN THE TOP AND CENTER FOR TRAVERSE PURPOSE.  THE
 HU1967'MONUMENT IS IN GOOD CONDITION.  IT IS 119.7 FEET SOUTHWEST OF A
 HU1967'STANDARD METAL WITNESS POST AND MARKER.
 HU1967'
 HU1967'HEIGHT OF LIGHT ABOVE STATION MARK 34.00 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8940 ***********************************************************************
 HV8940  CBN         -  This is a Cooperative Base Network Control Station.
 HV8940  DESIGNATION -  DIAMOND
 HV8940  PID         -  HV8940
 HV8940  STATE/COUNTY-  MD/TALBOT
 HV8940  COUNTRY     -  US
 HV8940  USGS QUAD   -  OXFORD (2016)
 HV8940
 HV8940                         *CURRENT SURVEY CONTROL
 HV8940  ______________________________________________________________________
 HV8940* NAD 83(2011) POSITION- 38 40 58.78470(N) 076 10 04.56981(W)   ADJUSTED
 HV8940* NAD 83(2011) ELLIP HT-   -33.587 (meters)        (06/27/12)   ADJUSTED
 HV8940* NAD 83(2011) EPOCH   -  2010.00
 HV8940* NAVD 88 ORTHO HEIGHT -     1.070 (meters)        3.51  (feet) ADJUSTED
 HV8940  ______________________________________________________________________
 HV8940  GEOID HEIGHT    -        -34.657 (meters)                     GEOID18
 HV8940  NAD 83(2011) X  -  1,191,887.229 (meters)                     COMP
 HV8940  NAD 83(2011) Y  - -4,840,799.428 (meters)                     COMP
 HV8940  NAD 83(2011) Z  -  3,964,886.033 (meters)                     COMP
 HV8940  LAPLACE CORR    -         -3.99  (seconds)                    DEFLEC18
 HV8940  DYNAMIC HEIGHT  -          1.069 (meters)        3.51  (feet) COMP
 HV8940  MODELED GRAVITY -    980,030.7   (mgal)                       NAVD 88
 HV8940
 HV8940  VERT ORDER      -  SECOND    CLASS I
 HV8940
 HV8940  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8940  Standards:
 HV8940         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8940            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8940  -------------------------------------------------------------------
 HV8940  NETWORK    0.39   0.90           0.17   0.15   0.46     -0.03048667
 HV8940  -------------------------------------------------------------------
 HV8940  Click here for local accuracies and other accuracy information.
 HV8940
 HV8940.The horizontal coordinates were established by GPS observations
 HV8940.and adjusted by the National Geodetic Survey in June 2012.
 HV8940
 HV8940.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8940.been affixed to the stable North American tectonic plate. See 
 HV8940.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8940
 HV8940.The horizontal coordinates are valid at the epoch date displayed above
 HV8940.which is a decimal equivalence of Year/Month/Day.
 HV8940
 HV8940.The orthometric height was determined by differential leveling and
 HV8940.adjusted by the NATIONAL GEODETIC SURVEY
 HV8940.in August 1994.
 HV8940
 HV8940.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8940.GEOID18 height accuracy estimate available here.
 HV8940
 HV8940.Click photographs - Photos may exist for this station.
 HV8940
 HV8940.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8940
 HV8940.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8940
 HV8940.The ellipsoidal height was determined by GPS observations
 HV8940.and is referenced to NAD 83.
 HV8940
 HV8940.The dynamic height is computed by dividing the NAVD 88
 HV8940.geopotential number by the normal gravity value computed on the
 HV8940.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8940.degrees latitude (g = 980.6199 gals.).
 HV8940
 HV8940.The modeled gravity was interpolated from observed gravity values.
 HV8940
 HV8940. The following values were computed from the NAD 83(2011) position.
 HV8940
 HV8940;                    North         East     Units Scale Factor Converg.
 HV8940;SPC MD       -   113,146.431   472,395.001   MT  0.99995548   +0 31 20.0
 HV8940;SPC MD       -   371,214.58  1,549,849.27   sFT  0.99995548   +0 31 20.0
 HV8940;UTM  18      - 4,282,246.406   398,415.092   MT  0.99972708   -0 43 48.1
 HV8940
 HV8940!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8940!SPC MD       -   1.00000527  x   0.99995548  =   0.99996075
 HV8940!UTM  18      -   1.00000527  x   0.99972708  =   0.99973235
 HV8940
 HV8940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9841582246(NAD 83)
 HV8940
 HV8940                          SUPERSEDED SURVEY CONTROL
 HV8940
 HV8940  NAD 83(2007)-  38 40 58.78501(N)    076 10 04.57067(W) AD(2002.00) 0
 HV8940  ELLIP H (02/10/07)  -33.558  (m)                       GP(2002.00)    
 HV8940  ELLIP H (02/12/02)  -33.533  (m)                       GP(       ) 4 1
 HV8940  NAD 83(1991)-  38 40 58.78476(N)    076 10 04.56991(W) AD(       ) B
 HV8940  ELLIP H (10/23/91)  -33.590  (m)                       GP(       ) 4 1
 HV8940  NAVD 88               1.07   (m)            3.5    (f) LEVELING    3  
 HV8940  NGVD 29               1.31   (m)            4.3    (f) LEVELING    3  
 HV8940
 HV8940.Superseded values are not recommended for survey control.
 HV8940
 HV8940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8940.See file dsdata.pdf to determine how the superseded data were derived.
 HV8940
 HV8940_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8940_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8940_STAMPING: DIAMOND 1990
 HV8940_MARK LOGO: NGS
 HV8940_PROJECTION: RECESSED 3 CENTIMETERS
 HV8940_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8940_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8940+STABILITY: SURFACE MOTION
 HV8940_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8940+SATELLITE: SATELLITE OBSERVATIONS - June 17, 2023
 HV8940
 HV8940  HISTORY     - Date     Condition        Report By
 HV8940  HISTORY     - 1990     MONUMENTED       NGS
 HV8940  HISTORY     - 19910402 GOOD             NGS
 HV8940  HISTORY     - 19941029 GOOD             NOS
 HV8940  HISTORY     - 19960319 GOOD             MCCRON
 HV8940  HISTORY     - 20000216 GOOD             NGS
 HV8940  HISTORY     - 20000726 GOOD             MDSHA
 HV8940  HISTORY     - 20020807 GOOD             USPSQD
 HV8940  HISTORY     - 20100713 GOOD             NGS
 HV8940  HISTORY     - 20230617 GOOD             BASE9
 HV8940
 HV8940                          STATION DESCRIPTION
 HV8940
 HV8940'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8940'THE STATION IS LOCATED IN THE TOWN OF OXFORD ON THE GROUNDS OF THE
 HV8940'OXFORD COMMUNITY CENTER ON THE WEST SIDE OF SECOND STREET BETWEEN THE
 HV8940'ROAD AND A BALL DIAMOND.  OWNERSHIP--THE TOWN OF OXFORD.
 HV8940'TO REACH THE STATION FROM THE POST OFFICE IN OXFORD AT WILSON STREET
 HV8940'AND BANK STREET, GO NORTHWEST ON WILSON STREET FOR 0.08 KM (0.05 MI)
 HV8940'TO STATE HIGHWAY 333 (NORTH MORRIS STREET).  TURN LEFT AND GO EAST FOR
 HV8940'0.8 KM (0.5 MI) TO SECOND STREET ON THE RIGHT.  TURN RIGHT AND GO
 HV8940'SOUTH FOR 0.16 KM (0.10 MI) TO THE STATION ON THE RIGHT.
 HV8940'THE STATION DISK IS SET IN THE TOP OF A 0.23 M (0.75 FT) ROUND
 HV8940'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT
 HV8940'IS 12.80 M (41.99 FT) EAST OF THE CENTERLINE OF SECOND STREET, 24.67
 HV8940'M (80.94 FT) EAST SOUTHEAST OF THE SOUTHEAST CORNER OF HOUSE NUMBER
 HV8940'106 AND 15.70 M (51.51 FT) SOUTHWEST OF THE CORNER FENCE POST OF A
 HV8940'CHAIN LINK FENCE AROUND A BALL DIAMOND.
 HV8940
 HV8940                          STATION RECOVERY (1991)
 HV8940
 HV8940'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV8940'RECOVERED IN GOOD CONDITION.
 HV8940
 HV8940                          STATION RECOVERY (1994)
 HV8940
 HV8940'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1994 (RJH)
 HV8940'RECOVERED AS DESCRIBED.
 HV8940
 HV8940                          STATION RECOVERY (1996)
 HV8940
 HV8940'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 HV8940'RECOVERED AS DESCRIBED.
 HV8940
 HV8940                          STATION RECOVERY (2000)
 HV8940
 HV8940'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 HV8940'THE STATION IS LOCATED IN THE CITY OF OXFORD ON THE EAST SIDE OF
 HV8940'SECOND STREET IN A GRASSY AREA BETWEEN THE EAST EDGE OF SECOND STREET
 HV8940'AND A CHAIN LINK FENCE ON THE WEST SIDE OF A BALL FIELD LOCATED BEHIND
 HV8940'THE OXFORD COMMUNITY CENTER BUILDING AND IS EAST AND ACROSS SECOND
 HV8940'STREET FROM THE SOUTH SIDE OF HOUSE NUMBER 106. OWNERSHIP--CITY OF
 HV8940'OXFORD.  TO REACH THE STATION FROM THE OXFORD COMMUNITY CENTER
 HV8940'BUILDING LOCATED AT THE JUNCTION OF STATE HIGHWAY 333 (SOUTH MORRIS
 HV8940'STREET) AND SECOND STREET ON THE WEST SIDE OF OXFORD, GO SOUTH ON
 HV8940'SECOND STREET FOR 0.05 KM (0.05 MI) TO THE SOUTH END OF HOUSE NUMBER
 HV8940'106 ON THE RIGHT AND THE STATION ON THE LEFT IN A GRASSY AREA BETWEEN
 HV8940'THE EAST EDGE OF SECOND STREET AND THE CHAIN LINK FENCE OF BALL FIELD.
 HV8940'THE STATION IS AN NGS HORIZONTAL CONTROL DISK SET IN THE TOP OF A 25
 HV8940'CM CONCRETE POST ABOUT FLUSH WITH THE GROUND, LOCATED 12.35 M (40.52
 HV8940'FT) WEST OF A FIBERGLASS WITNESS POST SET ON THE WEST SIDE OF THE
 HV8940'CHAIN LINK FENCE, 24.69 M (81.00 FT) EAST-SOUTHEAST AND ACROSS THE
 HV8940'STREET FROM THE SOUTHEAST CORNER OF HOUSE NUMBER 106, 15.7 M (51.5 FT)
 HV8940'SOUTHWEST OF THE THE NORTHWEST CORNER POST OF THE CHAIN LINK FENCE
 HV8940'AROUND THE BALL FIELD AND 12.81 M (42.03 FT) EAST OF THE CENTER OF
 HV8940'SECOND STREET.
 HV8940
 HV8940                          STATION RECOVERY (2000)
 HV8940
 HV8940'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV8940'RECOVERED AS DESCRIBED.
 HV8940
 HV8940                          STATION RECOVERY (2002)
 HV8940
 HV8940'RECOVERY NOTE BY US POWER SQUADRON 2002 (KGS)
 HV8940'RECOVERED IN GOOD CONDITION.
 HV8940
 HV8940                          STATION RECOVERY (2010)
 HV8940
 HV8940'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (JRO)
 HV8940'RECOVERED AS DESCRIBED IN 1990 AND 2000. ADDITIONAL TIES FOLLOW. 54.0
 HV8940'FT (16.5 M) SOUTH-SOUTHEAST OF MANHOLE IN STREET IN FRONT OF HOUSE
 HV8940'106, 53.0 FT (16.2 M) NORTHWEST OF 6 INCH (15 CM) WILLOW TREE, 7.4 FT
 HV8940'(2.3 M) NORTHEAST OF A LINE BETWEEN THE MANHOLE AND THE TREE.
 HV8940
 HV8940                          STATION RECOVERY (2023)
 HV8940
 HV8940'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2023 (DRD)
 HV8940'CHAIN LINK FENCE NOTED IN 1990 AND 2000 HAS BEEN REMOVED.  WITNESS
 HV8940'POST APPEARS TO HAVE BEEN REPLACED DISTANCE ESSENTIALLY THE SAME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4776 ***********************************************************************
 AB4776  DESIGNATION -  DIAMOND
 AB4776  PID         -  AB4776
 AB4776  STATE/COUNTY-  MD/CARROLL
 AB4776  COUNTRY     -  US
 AB4776  USGS QUAD   -  SYKESVILLE (2016)
 AB4776
 AB4776                         *CURRENT SURVEY CONTROL
 AB4776  ______________________________________________________________________
 AB4776* NAD 83(2011) POSITION- 39 22 07.29069(N) 076 57 19.05601(W)   ADJUSTED
 AB4776* NAD 83(2011) ELLIP HT-   121.663 (meters)        (06/27/12)   ADJUSTED
 AB4776* NAD 83(2011) EPOCH   -  2010.00
 AB4776* NAVD 88 ORTHO HEIGHT -   153.6   (meters)      504.    (feet) GPS OBS
 AB4776  ______________________________________________________________________
 AB4776  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4776  GEOID HEIGHT    -        -31.949 (meters)                     GEOID99
 AB4776  GEOID HEIGHT    -        -31.958 (meters)                     GEOID18
 AB4776  NAD 83(2011) X  -  1,114,462.919 (meters)                     COMP
 AB4776  NAD 83(2011) Y  - -4,810,142.536 (meters)                     COMP
 AB4776  NAD 83(2011) Z  -  4,024,121.080 (meters)                     COMP
 AB4776  LAPLACE CORR    -         -1.91  (seconds)                    DEFLEC18
 AB4776
 AB4776  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4776  Standards:
 AB4776         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4776            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4776  -------------------------------------------------------------------
 AB4776  NETWORK    3.44   6.08           1.75   0.30   3.10      0.03611676
 AB4776  -------------------------------------------------------------------
 AB4776  Click here for local accuracies and other accuracy information.
 AB4776
 AB4776.The horizontal coordinates were established by GPS observations
 AB4776.and adjusted by the National Geodetic Survey in June 2012.
 AB4776
 AB4776.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4776.been affixed to the stable North American tectonic plate. See 
 AB4776.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4776
 AB4776.The horizontal coordinates are valid at the epoch date displayed above
 AB4776.which is a decimal equivalence of Year/Month/Day.
 AB4776
 AB4776.The orthometric height was determined by GPS observations and a
 AB4776.high-resolution geoid model.
 AB4776
 AB4776.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4776.GEOID18 height accuracy estimate available here.
 AB4776
 AB4776.Click photographs - Photos may exist for this station.
 AB4776
 AB4776.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4776
 AB4776.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4776
 AB4776.The ellipsoidal height was determined by GPS observations
 AB4776.and is referenced to NAD 83.
 AB4776
 AB4776. The following values were computed from the NAD 83(2011) position.
 AB4776
 AB4776;                    North         East     Units Scale Factor Converg.
 AB4776;SPC MD       -   188,937.563   403,852.547   MT  0.99998679   +0 01 41.0
 AB4776;SPC MD       -   619,872.65  1,324,972.90   sFT  0.99998679   +0 01 41.0
 AB4776;UTM  18      - 4,359,515.443   331,563.463   MT  0.99994932   -1 14 26.0
 AB4776
 AB4776!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4776!SPC MD       -   0.99998091  x   0.99998679  =   0.99996770
 AB4776!UTM  18      -   0.99998091  x   0.99994932  =   0.99993023
 AB4776
 AB4776_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3156359515(NAD 83)
 AB4776
 AB4776|---------------------------------------------------------------------|
 AB4776| PID    Reference Object                     Distance      Geod. Az  |
 AB4776|                                                           dddmmss.s |
 AB4776| AB4687 DIAMOND AZ MK                       357.050 METERS 16637     |
 AB4776|---------------------------------------------------------------------|
 AB4776
 AB4776                          SUPERSEDED SURVEY CONTROL
 AB4776
 AB4776  NAD 83(2007)-  39 22 07.29090(N)    076 57 19.05666(W) AD(2002.00) 0
 AB4776  ELLIP H (02/10/07)  121.687  (m)                       GP(2002.00)    
 AB4776  ELLIP H (08/30/02)  121.691  (m)                       GP(       ) 4 2
 AB4776  NAD 83(1991)-  39 22 07.29052(N)    076 57 19.05690(W) AD(       ) 1
 AB4776  ELLIP H (07/03/96)  121.587  (m)                       GP(       ) 1 1
 AB4776  NAVD 88 (07/03/96)  153.6    (m)  GEOID93  model used  GPS OBS        
 AB4776
 AB4776.Superseded values are not recommended for survey control.
 AB4776
 AB4776.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4776.See file dsdata.pdf to determine how the superseded data were derived.
 AB4776
 AB4776_MARKER: DD = SURVEY DISK
 AB4776_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4776_STAMPING: DIAMOND 1995
 AB4776_MARK LOGO: MD-013
 AB4776_PROJECTION: FLUSH
 AB4776_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4776_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4776+STABILITY: SURFACE MOTION
 AB4776_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4776+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4776
 AB4776  HISTORY     - Date     Condition        Report By
 AB4776  HISTORY     - 1995     MONUMENTED       MD-013
 AB4776
 AB4776                          STATION DESCRIPTION
 AB4776
 AB4776'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4776'STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) EAST OF SYKESVILLE ON THE
 AB4776'GROUNDS OF FREEDOM PARK. TO REACH STATION FROM THE INTERSECTION OF MD
 AB4776'ROUTE 26 (LIBERTY ROAD) AND MD ROUTE 32 (SYKESVILLE ROAD) GO SOUTH ON
 AB4776'MD ROUTE 32 FOR ABOUT 2.6 MI (4.2 KM) TO THE INTERSECTION WITH
 AB4776'RAINCLIFFE ROAD. TURN LEFT ON RAINCLIFFE ROAD AND GO EAST FOR 0.4 MI
 AB4776'(0.6 KM) TO THE INTERSECTION WITH BUTTERCUP ROAD ON THE LEFT AND THE
 AB4776'ENTRANCE TO FREEDOM PARK ON THE RIGHT. CONTINUE ON RAINCLIFF ROAD FOR
 AB4776'ABOUT 0.1 MI (0.2 KM) TO THE STATION ON THE RIGHT. STATION MARK IS SET
 AB4776'IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4776'GROUND. IT IS 121 FT (36.9 M) SOUTH OF THE CENTERLINE OF RAINCLIFFE
 AB4776'ROAD, 529 FT (161.2 M) EAST OF THE CENTERLINE OF THE PARK ENTRANCE
 AB4776'ROAD AND 17.6 FT (5.4 M) SOUTHEAST OF THE RIGHT FIELD FOUL POLE AN
 AB4776'BASEBALL FIELD NO.3.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4687 ***********************************************************************
 AB4687  DESIGNATION -  DIAMOND AZ MK
 AB4687  PID         -  AB4687
 AB4687  STATE/COUNTY-  MD/CARROLL
 AB4687  COUNTRY     -  US
 AB4687  USGS QUAD   -  SYKESVILLE (2016)
 AB4687
 AB4687                         *CURRENT SURVEY CONTROL
 AB4687  ______________________________________________________________________
 AB4687* NAD 83(2011) POSITION- 39 21 56.02738(N) 076 57 15.60390(W)   ADJUSTED
 AB4687* NAD 83(2011) ELLIP HT-   114.752 (meters)        (06/27/12)   ADJUSTED
 AB4687* NAD 83(2011) EPOCH   -  2010.00
 AB4687* NAVD 88 ORTHO HEIGHT -   146.7   (meters)      481.    (feet) GPS OBS
 AB4687  ______________________________________________________________________
 AB4687  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4687  GEOID HEIGHT    -        -31.949 (meters)                     GEOID99
 AB4687  GEOID HEIGHT    -        -31.958 (meters)                     GEOID18
 AB4687  NAD 83(2011) X  -  1,114,591.951 (meters)                     COMP
 AB4687  NAD 83(2011) Y  - -4,810,333.319 (meters)                     COMP
 AB4687  NAD 83(2011) Z  -  4,023,848.152 (meters)                     COMP
 AB4687  LAPLACE CORR    -         -1.95  (seconds)                    DEFLEC18
 AB4687
 AB4687  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4687  Standards:
 AB4687         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4687            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4687  -------------------------------------------------------------------
 AB4687  NETWORK    3.41   6.23           1.73   0.41   3.18      0.12002575
 AB4687  -------------------------------------------------------------------
 AB4687  Click here for local accuracies and other accuracy information.
 AB4687
 AB4687.The horizontal coordinates were established by GPS observations
 AB4687.and adjusted by the National Geodetic Survey in June 2012.
 AB4687
 AB4687.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4687.been affixed to the stable North American tectonic plate. See 
 AB4687.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4687
 AB4687.The horizontal coordinates are valid at the epoch date displayed above
 AB4687.which is a decimal equivalence of Year/Month/Day.
 AB4687
 AB4687.The orthometric height was determined by GPS observations and a
 AB4687.high-resolution geoid model.
 AB4687
 AB4687.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4687.GEOID18 height accuracy estimate available here.
 AB4687
 AB4687.Click photographs - Photos may exist for this station.
 AB4687
 AB4687.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4687
 AB4687.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4687
 AB4687.The ellipsoidal height was determined by GPS observations
 AB4687.and is referenced to NAD 83.
 AB4687
 AB4687. The following values were computed from the NAD 83(2011) position.
 AB4687
 AB4687;                    North         East     Units Scale Factor Converg.
 AB4687;SPC MD       -   188,590.253   403,935.355   MT  0.99998632   +0 01 43.2
 AB4687;SPC MD       -   618,733.19  1,325,244.58   sFT  0.99998632   +0 01 43.2
 AB4687;UTM  18      - 4,359,166.398   331,638.559   MT  0.99994901   -1 14 23.5
 AB4687
 AB4687!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4687!SPC MD       -   0.99998200  x   0.99998632  =   0.99996832
 AB4687!UTM  18      -   0.99998200  x   0.99994901  =   0.99993101
 AB4687
 AB4687_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3163859166(NAD 83)
 AB4687
 AB4687|---------------------------------------------------------------------|
 AB4687| PID    Reference Object                     Distance      Geod. Az  |
 AB4687|                                                           dddmmss.s |
 AB4687| AB4776 DIAMOND                             357.050 METERS 34637     |
 AB4687|---------------------------------------------------------------------|
 AB4687
 AB4687                          SUPERSEDED SURVEY CONTROL
 AB4687
 AB4687  NAD 83(2007)-  39 21 56.02759(N)    076 57 15.60456(W) AD(2002.00) 0
 AB4687  ELLIP H (02/10/07)  114.778  (m)                       GP(2002.00)    
 AB4687  ELLIP H (08/30/02)  114.786  (m)                       GP(       ) 4 2
 AB4687  NAD 83(1991)-  39 21 56.02728(N)    076 57 15.60482(W) AD(       ) 1
 AB4687  ELLIP H (07/03/96)  114.684  (m)                       GP(       ) 1 1
 AB4687  NAVD 88 (07/03/96)  146.7    (m)  GEOID93  model used  GPS OBS        
 AB4687
 AB4687.Superseded values are not recommended for survey control.
 AB4687
 AB4687.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4687.See file dsdata.pdf to determine how the superseded data were derived.
 AB4687
 AB4687_MARKER: DD = SURVEY DISK
 AB4687_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4687_STAMPING: DIAMOND AZI 1995
 AB4687_MARK LOGO: MD-013
 AB4687_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4687_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4687+STABILITY: SURFACE MOTION
 AB4687_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4687+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4687
 AB4687  HISTORY     - Date     Condition        Report By
 AB4687  HISTORY     - 1995     MONUMENTED       MD-013
 AB4687
 AB4687                          STATION DESCRIPTION
 AB4687
 AB4687'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4687'STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) EAST OF SYKESVILLE. TO REACH
 AB4687'STATION FROM THE INTERSECTION OF MD ROUTE 26 (LIBERTY ROAD) AND MD
 AB4687'ROUTE 32 (SYKESVILLE ROAD) GO SOUTH ON MD ROUTE 32 FOR ABOUT 2.6 MI
 AB4687'(4.2 KM) TO THE INTERSECTION WITH RAINCLIFFE ROAD. TURN LEFT ON
 AB4687'RAINCLIFFE ROAD AND GO EAST FOR 0.4 MI (0.6 KM) TO THE INTERSECTION
 AB4687'WITH THE BUTTERCUP ROAD ON THE LEFT AND THE ENTRANCE TO FREEDOM PARK
 AB4687'ON THE RIGHT. TURN RIGHT AND GO SOUTH ON THE ENTRANCE ROAD FOR 0.35 MI
 AB4687'(0.56 KM) TO DIAMOND NO.6 AND THE STATION BEHIND THE BACKSTOP ON THE
 AB4687'LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4687'MONUMENT SET FLUSH WITH THE GROUND. IT IS 14.0 FT (4.3 M) SOUTH OF THE
 AB4687'WESTERNMOST CORNER OF LANDSCAPING TIMBERS, 14.5 FT (4.4 M) WEST OF THE
 AB4687'SOUTHERMOST CORNER OF THE LANDSCAPING TIMBERS AND 48 FT (14.6 M)
 AB4687'SOUTHWEST OF HOME PLATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1560 ***********************************************************************
 HU1560  DESIGNATION -  DICK
 HU1560  PID         -  HU1560
 HU1560  STATE/COUNTY-  MD/WORCESTER
 HU1560  COUNTRY     -  US
 HU1560  USGS QUAD   -  SELBYVILLE (2016)
 HU1560
 HU1560                         *CURRENT SURVEY CONTROL
 HU1560  ______________________________________________________________________
 HU1560* NAD 83(1991) POSITION- 38 27 04.11338(N) 075 09 28.10592(W)   ADJUSTED
 HU1560* NAVD 88 ORTHO HEIGHT -     5.6   (meters)       18.    (feet) VERTCON3
 HU1560  ______________________________________________________________________
 HU1560  GEOID HEIGHT    -        -35.882 (meters)                     GEOID18
 HU1560  LAPLACE CORR    -         -0.48  (seconds)                    DEFLEC18
 HU1560  HORZ ORDER      -  SECOND
 HU1560
 HU1560.The horizontal coordinates were established by classical geodetic methods
 HU1560.and adjusted by the National Geodetic Survey in January 1992.
 HU1560
 HU1560.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1560.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1560
 HU1560.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1560.GEOID18 height accuracy estimate available here.
 HU1560
 HU1560.Click photographs - Photos may exist for this station.
 HU1560
 HU1560.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1560
 HU1560. The following values were computed from the NAD 83(1991) position.
 HU1560
 HU1560;                    North         East     Units Scale Factor Converg.
 HU1560;SPC MD       -    88,702.479   560,793.478   MT  0.99997715   +1 09 22.4
 HU1560;SPC MD       -   291,018.05  1,839,869.94   sFT  0.99997715   +1 09 22.4
 HU1560;UTM  18      - 4,255,883.949   486,230.254   MT  0.99960233   -0 05 53.3
 HU1560
 HU1560!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1560!SPC MD       -   1.00000476  x   0.99997715  =   0.99998191
 HU1560!UTM  18      -   1.00000476  x   0.99960233  =   0.99960709
 HU1560
 HU1560:                Primary Azimuth Mark                     Grid Az
 HU1560:SPC MD       -  DICK RM 3                                269 52 12.1
 HU1560:UTM  18      -  DICK RM 3                                271 07 27.8
 HU1560
 HU1560_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8623055883(NAD 83)
 HU1560
 HU1560|---------------------------------------------------------------------|
 HU1560| PID    Reference Object                     Distance      Geod. Az  |
 HU1560|                                                           dddmmss.s |
 HU1560| HU1559 BOUNDARY MON EW 6 DE MD               5.663 METERS 00004     |
 HU1560| DC7232 DICK RM 1                            23.607 METERS 05312     |
 HU1560| HU1548 DICK RM 3                           APPROX. 0.8 KM 2710134.5 |
 HU1560| DC7233 DICK RM 2                            22.003 METERS 31041     |
 HU1560|---------------------------------------------------------------------|
 HU1560
 HU1560                          SUPERSEDED SURVEY CONTROL
 HU1560
 HU1560  NAD 83(1986)-  38 27 04.09670(N)    075 09 28.12939(W) AD(       ) 2
 HU1560  NAD 27      -  38 27 03.68652(N)    075 09 29.46164(W) AD(       ) 2
 HU1560  NGVD 29 (07/19/86)    5.8    (m)           19.     (f) VERT ANG       
 HU1560
 HU1560.Superseded values are not recommended for survey control.
 HU1560
 HU1560.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1560.See file dsdata.pdf to determine how the superseded data were derived.
 HU1560
 HU1560_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1560_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1560_STAMPING: DICK 1974
 HU1560_MARK LOGO: NGS
 HU1560_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1560+STABILITY: SURFACE MOTION
 HU1560
 HU1560  HISTORY     - Date     Condition        Report By
 HU1560  HISTORY     - 1974     MONUMENTED       NGS
 HU1560  HISTORY     - 1976     GOOD             NGS
 HU1560  HISTORY     - 20050614 MARK NOT FOUND   UE
 HU1560
 HU1560                          STATION DESCRIPTION
 HU1560
 HU1560'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1560'NO MEASUREMENT BETWEEN THE RMS DUE TO HEAVY BRUSH ON LINE.
 HU1560'
 HU1560'THE STATION IS LOCATED ABOUT 1.4 MILES NORTHEAST OF BISHOPVILLE
 HU1560'AND 2.4 MILES SOUTHEAST OF SELBYVILLE.
 HU1560'
 HU1560'TO REACH THE STATION FROM THE POST OFFICE IN BISHOPVILLE, GO
 HU1560'NORTHEAST ON A PAVED ROAD FOR 0.75 MILE TO A SIDE ROAD RIGHT.  TURN
 HU1560'RIGHT AND GO EAST ON THE PAVED ROAD FOR 0.9 MILE TO REFERENCE MARK
 HU1560'3 ON THE LEFT, CONTINUE EAST ON THE PAVED ROAD FOR 0.5 MILE TO
 HU1560'THE STATION ON THE RIGHT.
 HU1560'
 HU1560'STATION MARKS ARE STANDARD DISK STAMPED DICK 1974.  THE SURFACE
 HU1560'DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT
 HU1560'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 29 FEET
 HU1560'EAST-NORTHEAST OF A 10-INCH OAK TREE WITH A TRIANGLE BLAZE, 23 FEET
 HU1560'SOUTH OF THE CENTER OF THE PAVED ROAD AND 3 FEET SOUTH-SOUTHWEST
 HU1560'OF A POWERLINE POLE NUMBER 12.  THE UNDERGROUND DISK IS SET IN
 HU1560'THE TOP OF AN IRREGULAR MASS OF CONCRETE 42 INCHES BELOW THE
 HU1560'GROUND SURFACE.
 HU1560'
 HU1560'REFERENCE MARK 1, A STANDARD DISK STAMPED DICK NO 1 1974, IS SET
 HU1560'IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT PROJECTS
 HU1560'2 INCHES ABOVE THE GROUND SURFACE.  IT IS 24 FEET NORTH OF THE
 HU1560'CENTER OF THE PAVED ROAD, 16 FEET WEST OF A 28-INCH PINE TREE AND
 HU1560'10 FEET EAST OF A 10-INCH OAK TREE
 HU1560'
 HU1560'REFERENCE MARK 2, A STANDARD DISK STAMPED DICK NO 2 1974, IS SET
 HU1560'IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT IS
 HU1560'FLUSH WITH THE GROUND SURFACE.  IT IS 23 FEET NORTH OF THE CENTER
 HU1560'OF THE PAVED ROAD, 8 FEET WEST OF A TWIN TRUNK OAK TREE AND 7 FEET
 HU1560'EAST OF A 30-INCH PINE TREE.
 HU1560'
 HU1560'REFERENCE MARK 3, A STANDARD DISK STAMPED DICK NO 3 1974, IS SET
 HU1560'IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT PROJECTS
 HU1560'2 INCHES ABOVE THE GROUND SURFACE.  IT IS 60 FEET NORTHEAST OF A
 HU1560'POWERLINE POLE NUMBER 19 AND 17 FEET NORTH OF THE CENTER OF THE
 HU1560'PAVED ROAD.  THE MARK SERVES AS AN AZIMUTH MARK.
 HU1560
 HU1560                          STATION RECOVERY (1976)
 HU1560
 HU1560'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1560'THE STATION SUB-SURFACE DISK WAS RECOVERED AND FOUND IN GOOD
 HU1560'CONDITION.  THE SURFACE DISK HAD BEEN DESTROYED.  A NEW SURFACE
 HU1560'DISK SET AT THIS DATE.  ALL OTHER MARKS WERE FOUND IN GOOD
 HU1560'CONDITION.  THE DISTANCE AND DIRECTION TO ALL OBJECTS WERE WITHIN
 HU1560'CLOSE AGREEMENT WITH THE 1974 OBSERVATIONS.
 HU1560'
 HU1560'A COMPLETE NEW DESCRIPTION FOLLOWS.
 HU1560'
 HU1560'THE STATION IS LOCATED ABOUT 2-1/2 MILES SOUTHEAST OF SELBYVILLE,
 HU1560'1-1/2 MILES NORTHEAST OF BISHOPVILLE, AND ON ROAD RIGHT-OF-WAY.
 HU1560'
 HU1560'TO REACH FROM THE POST OFFICE IN BISHOPVILLE, GO NORTHEAST ON A
 HU1560'PAVED ROAD FOR 0.75 MILE TO A SIDE ROAD RIGHT.  TURN RIGHT AND
 HU1560'GO EAST ON STATE LINE ROAD FOR 0.9 MILE TO THE AZIMUTH MARK ON
 HU1560'THE LEFT.  CONTINUE EAST ON STATE LINE ROAD FOR 0.5 MILE TO THE
 HU1560'STATION ON THE RIGHT.
 HU1560'
 HU1560'THE SURFACE MARK IS A STANDARD DISK STAMPED DICK 1974 1976, SET
 HU1560'IN THE TOP OF A 10-INCH MASS OF CONCRETE WHICH IS 2-INCHES BELOW
 HU1560'THE SURFACE.  THE SUB-SURFACE MARK IS STAMPED DICK 1974, SET IN
 HU1560'AN 8-INCH MASS OF CONCRETE WHICH IS 42-INCHES BELOW THE
 HU1560'SURFACE.  IT IS 29 FEET EAST-NORTHEAST OF A 10-INCH OAK TREE
 HU1560'WITH A TRIANGULAR BLAZE, 23 FEET SOUTH OF THE CENTER OF STATE
 HU1560'LINE ROAD, 3 FEET SOUTH-SOUTHWEST OF A POWERLINE POLE NUMBERED
 HU1560'12, AND 1 FOOT SOUTH OF A WITNESS POST.
 HU1560'
 HU1560'REFERENCE MARK 1 IS A STANDARD DISK STAMPED DICK NO. 1 1974 SET
 HU1560'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HU1560'WITH THE SURFACE.  IT IS 77.5 FEET NORTHEAST OF THE WITNESS POST,
 HU1560'24 FEET NORTH OF THE CENTER OF STATE LINE ROAD, AND 4 FEET EAST
 HU1560'OF THE SOUTHWEST EDGE OF A WOODED AREA.
 HU1560'
 HU1560'REFERENCE MARK 2 IS A STANDARD DISK STAMPED DICK NO. 2 1974 SET
 HU1560'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HU1560'WITH THE SURFACE.  IT IS 72 FEET NORTHEAST OF THE WITNESS POST,
 HU1560'23 FEET NORTH OF THE CENTER OF STATE LINE ROAD, AND 7 FEET EAST
 HU1560'OF A 30-INCH TREE.
 HU1560'
 HU1560'THE AZIMUTH MARK IS A STANDARD REFERENCE MARK DISK STAMPED DICK
 HU1560'NO. 3 1974 SET IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT
 HU1560'WHICH IS FLUSH WITH THE SURFACE.  IT IS 60 FEET NORTHEAST OF A
 HU1560'POWERLINE POLE NUMBERED 19, 17 FEET NORTH OF THE CENTER OF STATE
 HU1560'LINE ROAD, AND 2 FEET EAST OF A WITNESS POST.
 HU1560'
 HU1560'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 6 WAS ESTABLISHED
 HU1560'AT THIS DATE, SEE DESCRIPTION THEREOF.
 HU1560'
 HU1560'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1560'1-1/2 MILES NORTHEAST OF BISHOPVILLE.
 HU1560
 HU1560                          STATION RECOVERY (2005)
 HU1560
 HU1560'RECOVERY NOTE BY URBAN ENGINEERS INC 2005 (WBF)
 HU1560'SURFACE MARKER, 10-INCH OAK TREE AND WITNESS POST ARE MISSING. THE
 HU1560'BASE OF TWO U-POSTS MARK THE LOCATION. DID NOT ATTEMPT TO EXCAVATE TO
 HU1560'RECOVER SUB-SURFACE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1548 ***********************************************************************
 HU1548  DESIGNATION -  DICK RM 3
 HU1548  PID         -  HU1548
 HU1548  STATE/COUNTY-  MD/WORCESTER
 HU1548  COUNTRY     -  US
 HU1548  USGS QUAD   -  SELBYVILLE (2016)
 HU1548
 HU1548                         *CURRENT SURVEY CONTROL
 HU1548  ______________________________________________________________________
 HU1548* NAD 83(1991) POSITION- 38 27 04.57008(N) 075 10 00.61557(W)   ADJUSTED
 HU1548* NAVD 88 ORTHO HEIGHT -     4.6   (meters)       15.    (feet) VERTCON3
 HU1548  ______________________________________________________________________
 HU1548  GEOID HEIGHT    -        -35.880 (meters)                     GEOID18
 HU1548  LAPLACE CORR    -         -0.47  (seconds)                    DEFLEC18
 HU1548  HORZ ORDER      -  SECOND
 HU1548
 HU1548.The horizontal coordinates were established by classical geodetic methods
 HU1548.and adjusted by the National Geodetic Survey in January 1992.
 HU1548
 HU1548.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1548.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1548
 HU1548.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1548.GEOID18 height accuracy estimate available here.
 HU1548
 HU1548.Click photographs - Photos may exist for this station.
 HU1548
 HU1548.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1548
 HU1548. The following values were computed from the NAD 83(1991) position.
 HU1548
 HU1548;                    North         East     Units Scale Factor Converg.
 HU1548;SPC MD       -    88,700.691   560,005.090   MT  0.99997713   +1 09 02.0
 HU1548;SPC MD       -   291,012.18  1,837,283.37   sFT  0.99997713   +1 09 02.0
 HU1548;UTM  18      - 4,255,899.414   485,442.310   MT  0.99960261   -0 06 13.5
 HU1548
 HU1548!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1548!SPC MD       -   1.00000491  x   0.99997713  =   0.99998204
 HU1548!UTM  18      -   1.00000491  x   0.99960261  =   0.99960752
 HU1548
 HU1548:                Primary Azimuth Mark                     Grid Az
 HU1548:SPC MD       -  DICK                                     089 52 12.3
 HU1548:UTM  18      -  DICK                                     091 07 27.8
 HU1548
 HU1548_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8544255899(NAD 83)
 HU1548
 HU1548|---------------------------------------------------------------------|
 HU1548| PID    Reference Object                     Distance      Geod. Az  |
 HU1548|                                                           dddmmss.s |
 HU1548| HU1560 DICK                                APPROX. 0.8 KM 0910114.3 |
 HU1548|---------------------------------------------------------------------|
 HU1548
 HU1548                          SUPERSEDED SURVEY CONTROL
 HU1548
 HU1548  NAD 83(1986)-  38 27 04.55356(N)    075 10 00.63905(W) AD(       ) 2
 HU1548  NAD 27      -  38 27 04.14330(N)    075 10 01.97003(W) AD(       ) 2
 HU1548  NGVD 29 (07/19/86)    4.8    (m)           16.     (f) VERT ANG       
 HU1548
 HU1548.Superseded values are not recommended for survey control.
 HU1548
 HU1548.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1548.See file dsdata.pdf to determine how the superseded data were derived.
 HU1548
 HU1548_MARKER: DR = REFERENCE MARK DISK
 HU1548_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1548_STAMPING: DICK NO 3 1974
 HU1548_MARK LOGO: NGS
 HU1548_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1548+STABILITY: SURFACE MOTION
 HU1548_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1548+SATELLITE: SATELLITE OBSERVATIONS - June 14, 2005
 HU1548
 HU1548  HISTORY     - Date     Condition        Report By
 HU1548  HISTORY     - 1974     MONUMENTED       NGS
 HU1548  HISTORY     - 20050614 GOOD             UE
 HU1548
 HU1548                          STATION DESCRIPTION
 HU1548
 HU1548'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
 HU1548'STATION MARK 3, A STANDARD DISK STAMPED DICK NO 3 1974, IS SET
 HU1548'IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT PROJECTS
 HU1548'2 INCHES ABOVE THE GROUND SURFACE.  IT IS 60 FEET NORTHEAST OF A
 HU1548'POWERLINE POLE NUMBER 19 AND 17 FEET NORTH OF THE CENTER OF THE
 HU1548'PAVED ROAD.
 HU1548'
 HU1548'TO REACH THE STATION FROM THE POST OFFICE IN BISHOPVILLE, GO
 HU1548'NORTHEAST ON A PAVED ROAD FOR 0.75 MILE TO A SIDE ROAD RIGHT.  TURN
 HU1548'RIGHT AND GO EAST ON THE PAVED ROAD FOR 0.9 MILE TO STATION MARK
 HU1548'3 ON THE LEFT.
 HU1548
 HU1548                          STATION RECOVERY (2005)
 HU1548
 HU1548'RECOVERY NOTE BY URBAN ENGINEERS INC 2005 (WBF)
 HU1548'UTILITY POLE NO.19 IS NOW NO. 59349/96213.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2221 ***********************************************************************
 JV2221  DESIGNATION -  DICKERSON BORR
 JV2221  PID         -  JV2221
 JV2221  STATE/COUNTY-  MD/MONTGOMERY
 JV2221  COUNTRY     -  US
 JV2221  USGS QUAD   -  POOLESVILLE (2016)
 JV2221
 JV2221                         *CURRENT SURVEY CONTROL
 JV2221  ______________________________________________________________________
 JV2221* NAD 83(1986) POSITION- 39 13 12.     (N) 077 24 45.     (W)   SCALED
 JV2221* NAVD 88 ORTHO HEIGHT -   119.31  (+/-2cm)      391.4   (feet) VERTCON3
 JV2221  ______________________________________________________________________
 JV2221  GEOID HEIGHT    -        -32.256 (meters)                     GEOID18
 JV2221  VERT ORDER      -  ? (See Below)
 JV2221
 JV2221.The horizontal coordinates were scaled from a map and have
 JV2221.an estimated accuracy of +/- 6 seconds.
 JV2221
 JV2221.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2221.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2221
 JV2221.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2221.GEOID18 height accuracy estimate available here.
 JV2221
 JV2221.The vertical order pertains to the NGVD 29 superseded value.
 JV2221
 JV2221.Click photographs - Photos may exist for this station.
 JV2221
 JV2221;                    North         East    Units  Estimated Accuracy
 JV2221;SPC MD       -   172,510.      364,380.      MT  (+/- 180 meters Scaled)
 JV2221
 JV2221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ917439(NAD 83)
 JV2221
 JV2221                          SUPERSEDED SURVEY CONTROL
 JV2221
 JV2221  NGVD 29 (11/26/84)  119.515  (m)          392.11   (f) ADJUSTED       
 JV2221
 JV2221.Superseded values are not recommended for survey control.
 JV2221
 JV2221.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2221.See file dsdata.pdf to determine how the superseded data were derived.
 JV2221
 JV2221_MARKER: Q = CHISELED SQUARE
 JV2221_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2221_SP_SET: BRIDGE
 JV2221_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2221
 JV2221  HISTORY     - Date     Condition        Report By
 JV2221  HISTORY     - UNK      MONUMENTED       BORR
 JV2221  HISTORY     - 1938     GOOD             CGS
 JV2221
 JV2221                          STATION DESCRIPTION
 JV2221
 JV2221'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2221'0.6 MI SE FROM DICKERSON.
 JV2221'0.6 MILE SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2221'STATION AT DICKERSON, MONTGOMERY COUNTY, AT A STONE BRIDGE OVER A
 JV2221'CREEK, ON THE SOUTHEAST CORNER OF THE SOUTHWEST CORNERSTONE, 6
 JV2221'FEET SOUTHWEST OF THE CENTER LINE OF THE SOUTH-BOUND TRACK, AND 3
 JV2221'INCHES BELOW THE LEVEL OF THE RAILS.  A CHISELED SQUARE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4541 ***********************************************************************
 JV4541  DESIGNATION -  DICKERSON PEPCO E STACK
 JV4541  PID         -  JV4541
 JV4541  STATE/COUNTY-  MD/MONTGOMERY
 JV4541  COUNTRY     -  US
 JV4541  USGS QUAD   -  POOLESVILLE (2016)
 JV4541
 JV4541                         *CURRENT SURVEY CONTROL
 JV4541  ______________________________________________________________________
 JV4541* NAD 83(1993) POSITION- 39 12 35.57518(N) 077 27 50.00388(W)   ADJUSTED
 JV4541  ______________________________________________________________________
 JV4541  GEOID HEIGHT    -        -32.402 (meters)                     GEOID18
 JV4541  LAPLACE CORR    -          6.12  (seconds)                    DEFLEC18
 JV4541  HORZ ORDER      -  THIRD
 JV4541
 JV4541.The horizontal coordinates were established by classical geodetic methods
 JV4541.and adjusted by the National Geodetic Survey in November 1994.
 JV4541
 JV4541.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4541.GEOID18 height accuracy estimate available here.
 JV4541
 JV4541.Click photographs - Photos may exist for this station.
 JV4541
 JV4541.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4541
 JV4541. The following values were computed from the NAD 83(1993) position.
 JV4541
 JV4541;                    North         East     Units Scale Factor Converg.
 JV4541;SPC MD       -   171,407.605   359,935.373   MT  0.99996681   -0 17 28.2
 JV4541;SPC MD       -   562,359.78  1,180,887.97   sFT  0.99996681   -0 17 28.2
 JV4541;UTM  18      - 4,342,960.400   287,265.889   MT  1.00015726   -1 33 29.4
 JV4541
 JV4541_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8726542960(NAD 83)
 JV4541
 JV4541                          SUPERSEDED SURVEY CONTROL
 JV4541
 JV4541  NAD 83(1991)-  39 12 35.57555(N)    077 27 50.00355(W) AD(       ) 3
 JV4541  NAD 83(1986)-  39 12 35.57503(N)    077 27 50.01446(W) AD(       ) 3
 JV4541  NAD 27      -  39 12 35.19822(N)    077 27 51.05197(W) AD(       ) 3
 JV4541
 JV4541.Superseded values are not recommended for survey control.
 JV4541
 JV4541.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4541.See file dsdata.pdf to determine how the superseded data were derived.
 JV4541
 JV4541_MARKER: 63 = STACK
 JV4541
 JV4541  HISTORY     - Date     Condition        Report By
 JV4541  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4541  HISTORY     - 19950705 GOOD             USPSQD
 JV4541
 JV4541                          STATION DESCRIPTION
 JV4541
 JV4541'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4541'STATION IS THE DICKERSON POTOMAC ELECTRIC POWER COMPANY EAST
 JV4541'STACK.  THE POINT OBSERVED WAS THE CENTER OF THE TOP OF THE BRICK
 JV4541'STACK.  IT IS ABOUT 400 FEET ABOVE THE GROUND AND HAS MICROWAVE
 JV4541'REFLECTOR ON THE SOUTH SIDE OF IT.
 JV4541'
 JV4541'TO REACH THE STATION FROM THE INTERSECTION OF MARTINSBURGER ROAD
 JV4541'AND STATE HIGHWAY 28 SOUTHEAST OF THE TOWN OF DICKERSON, GO
 JV4541'SOUTHERLY ON MARTINSBURGER ROAD FOR 0.95 MILE A FORK.  TURN RIGHT
 JV4541'ON THE RIGHT FORK AND GO WESTERLY ON A PRIVATE PAVED ROAD FOR 0.2
 JV4541'MILE TO A GUARD GATE, CONTINUE WESTERLY FOR 0.8 MILE TO ANOTHER
 JV4541'GUARD GATE.  CONTINUE FOR 0.1 MILE TO THE STACKS ON THE LEFT.
 JV4541
 JV4541                          STATION RECOVERY (1995)
 JV4541
 JV4541'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4541'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4542 ***********************************************************************
 JV4542  DESIGNATION -  DICKERSON PEPCO W STACK
 JV4542  PID         -  JV4542
 JV4542  STATE/COUNTY-  MD/MONTGOMERY
 JV4542  COUNTRY     -  US
 JV4542  USGS QUAD   -  POOLESVILLE (2016)
 JV4542
 JV4542                         *CURRENT SURVEY CONTROL
 JV4542  ______________________________________________________________________
 JV4542* NAD 83(1993) POSITION- 39 12 33.53264(N) 077 27 51.12011(W)   ADJUSTED
 JV4542  ______________________________________________________________________
 JV4542  GEOID HEIGHT    -        -32.402 (meters)                     GEOID18
 JV4542  LAPLACE CORR    -          6.12  (seconds)                    DEFLEC18
 JV4542  HORZ ORDER      -  THIRD
 JV4542
 JV4542.The horizontal coordinates were established by classical geodetic methods
 JV4542.and adjusted by the National Geodetic Survey in November 1994.
 JV4542
 JV4542.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4542.GEOID18 height accuracy estimate available here.
 JV4542
 JV4542.Click photographs - Photos may exist for this station.
 JV4542
 JV4542.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4542
 JV4542. The following values were computed from the NAD 83(1993) position.
 JV4542
 JV4542;                    North         East     Units Scale Factor Converg.
 JV4542;SPC MD       -   171,344.755   359,908.274   MT  0.99996675   -0 17 28.9
 JV4542;SPC MD       -   562,153.58  1,180,799.06   sFT  0.99996675   -0 17 28.9
 JV4542;UTM  18      - 4,342,898.153   287,237.402   MT  1.00015741   -1 33 30.0
 JV4542
 JV4542_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8723742898(NAD 83)
 JV4542
 JV4542                          SUPERSEDED SURVEY CONTROL
 JV4542
 JV4542  NAD 83(1991)-  39 12 33.53283(N)    077 27 51.11971(W) AD(       ) 3
 JV4542  NAD 83(1986)-  39 12 33.53215(N)    077 27 51.13073(W) AD(       ) 3
 JV4542  NAD 27      -  39 12 33.14739(N)    077 27 52.16434(W) AD(       ) 3
 JV4542
 JV4542.Superseded values are not recommended for survey control.
 JV4542
 JV4542.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4542.See file dsdata.pdf to determine how the superseded data were derived.
 JV4542
 JV4542_MARKER: 63 = STACK
 JV4542
 JV4542  HISTORY     - Date     Condition        Report By
 JV4542  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4542  HISTORY     - 1983     GOOD             USPSQD
 JV4542  HISTORY     - 19950705 GOOD             USPSQD
 JV4542
 JV4542                          STATION DESCRIPTION
 JV4542
 JV4542'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4542'THE STATION IS THE DICKERSON POTOMAC ELECTRIC POWER COMPANY WEST
 JV4542'STACK.  THE POINT OBSERVED WAS THE CENTER OF THE TOP OF THE WEST
 JV4542'STACK.  IT IS ABOUT 400 FEET ABOVE THE GROUND.
 JV4542'
 JV4542'TO REACH THE STATION FROM THE INTERSECTION OF MARTINSBURGER ROAD
 JV4542'AND STATE HIGHWAY 28 SOUTHEAST OF THE TOWN OF DICKERSON, GO
 JV4542'SOUTHERLY ON MARTINSBURGER ROAD FOR 0.95 MILE TO A FORK.  TURN
 JV4542'RIGHT ON THE RIGHT FORK AND GO WESTERLY ON A PRIVATE ROAD FOR 0.2
 JV4542'MILE TO A GUARD GATE, CONTINUE WESTERLY FOR 0.8 MILE TO ANOTHER
 JV4542'GUARD GATE.  CONTINUE FOR 0.1 MILE TO THE STACKS ON THE LEFT.
 JV4542
 JV4542                          STATION RECOVERY (1983)
 JV4542
 JV4542'RECOVERY NOTE BY US POWER SQUADRON 1983 (RWS)
 JV4542'STATION RECOVERED GOOD.
 JV4542'
 JV4542'GUIDED TO STACK BY MIKE MORRIS, SHIFT SUPERINTENDENT, STACK
 JV4542'IS ONE OF THREE NEAREST TO ROAD IN FRONT OF PLANT.  NO APPARENT
 JV4542'CHANGE FROM ORIGINAL DISCRIPTION.  MICROWAVE REFLECTOR STILL IN
 JV4542'PLACE.
 JV4542'
 JV4542'I WAS SHOWN A BRONZE PLACK ON THE SCREENING STATION - EAST SIDE
 JV4542'1ST LANDING OF STEPS - VERTICAL WALL WITH THE FOLLOWING
 JV4542'ABOVE USC AND GS MEAN SEA LEVEL DATUM 1929 SET BY STONE
 JV4542'AND WEBSTER ENGINEERING CORP. 6-12-59.
 JV4542
 JV4542                          STATION RECOVERY (1995)
 JV4542
 JV4542'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4542'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6116 ***********************************************************************
 HV6116  DESIGNATION -  DICKINSON 2
 HV6116  PID         -  HV6116
 HV6116  STATE/COUNTY-  MD/TALBOT
 HV6116  COUNTRY     -  US
 HV6116  USGS QUAD   -  TILGHMAN (2016)
 HV6116
 HV6116                         *CURRENT SURVEY CONTROL
 HV6116  ______________________________________________________________________
 HV6116* NAD 83(1991) POSITION- 38 42 59.03202(N) 076 16 21.13092(W)   NO CHECK
 HV6116* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV6116  ______________________________________________________________________
 HV6116  GEOID HEIGHT    -        -34.343 (meters)                     GEOID18
 HV6116  LAPLACE CORR    -         -5.12  (seconds)                    DEFLEC18
 HV6116  HORZ ORDER      -  THIRD
 HV6116
 HV6116.The horizontal coordinates were established by classical geodetic methods
 HV6116.and adjusted by the National Geodetic Survey in January 1992.
 HV6116
 HV6116.No horizontal observational check was made to the station.
 HV6116
 HV6116.The orthometric height was scaled from a topographic map.
 HV6116
 HV6116.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6116.GEOID18 height accuracy estimate available here.
 HV6116
 HV6116.Click photographs - Photos may exist for this station.
 HV6116
 HV6116.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6116
 HV6116. The following values were computed from the NAD 83(1991) position.
 HV6116
 HV6116;                    North         East     Units Scale Factor Converg.
 HV6116;SPC MD       -   116,776.359   463,264.751   MT  0.99995370   +0 27 23.7
 HV6116;SPC MD       -   383,123.77  1,519,894.44   sFT  0.99995370   +0 27 23.7
 HV6116;UTM  18      - 4,286,074.201   389,368.316   MT  0.99975072   -0 47 45.6
 HV6116
 HV6116!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6116!SPC MD       -   1.00000464  x   0.99995370  =   0.99995834
 HV6116!UTM  18      -   1.00000464  x   0.99975072  =   0.99975536
 HV6116
 HV6116:                Primary Azimuth Mark                     Grid Az
 HV6116:SPC MD       -  DICKINSON 2 RM 6                         244 39 19.3
 HV6116:UTM  18      -  DICKINSON 2 RM 6                         245 54 28.6
 HV6116
 HV6116_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8936886074(NAD 83)
 HV6116
 HV6116|---------------------------------------------------------------------|
 HV6116| PID    Reference Object                     Distance      Geod. Az  |
 HV6116|                                                           dddmmss.s |
 HV6116| HV6091 DICKINSON                           149.085 METERS 13230     |
 HV6116| CX2691 DICKINSON 2 RM 4                     12.908 METERS 23939     |
 HV6116| CX2693 DICKINSON 2 RM 6                                   2450643.0 |
 HV6116| CX2692 DICKINSON 2 RM 5                      7.979 METERS 32247     |
 HV6116|---------------------------------------------------------------------|
 HV6116
 HV6116                          SUPERSEDED SURVEY CONTROL
 HV6116
 HV6116  NAD 83(1986)-  38 42 59.02939(N)    076 16 21.14567(W) AD(       ) 3
 HV6116
 HV6116.Superseded values are not recommended for survey control.
 HV6116
 HV6116.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6116.See file dsdata.pdf to determine how the superseded data were derived.
 HV6116
 HV6116_MARKER: DH = HORIZONTAL CONTROL DISK
 HV6116_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6116_STAMPING: DICKINSON 2 1974
 HV6116_MARK LOGO: NGS
 HV6116_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6116+STABILITY: SURFACE MOTION
 HV6116
 HV6116  HISTORY     - Date     Condition        Report By
 HV6116  HISTORY     - 1974     MONUMENTED       NGS
 HV6116  HISTORY     - 20050307 POOR             USPSQD
 HV6116
 HV6116                          STATION DESCRIPTION
 HV6116
 HV6116'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV6116'THE STATION IS LOCATED ABOUT 1-1/4 MILES SOUTH OF NEAVITT, 5-1/2
 HV6116'MILES SOUTHWEST OF MICHAELS AND JUST EAST OF BROAD CREEK.  THE
 HV6116'PROPERTY IS OWNED BY MR. JOSEPH MILLER AND MR. MILLERS RESIDENCE IS
 HV6116'AT THE STATION SITE.  MR. MILLERS PHONE NUMBER IS (301) 745 9695.
 HV6116'
 HV6116'TO REACH FROM THE POST OFFICE IN NEAVITT, GO SOUTH AND EAST ON THE
 HV6116'MAIN TRAVELED PAVED ROAD FOR 0.75 MILE TO A SIDE ROAD RIGHT JUST
 HV6116'BEFORE REACHING A BOAT DOCK.  TURN RIGHT AND GO SOUTH AND EAST
 HV6116'ON ELSTON SHORE ROAD FOR 0.35 MILE TO THE REFERENCE MARK 6 ON
 HV6116'THE RIGHT.  CONTINUE EASTERLY ON THE PAVED ROAD FOR ABOUT 150
 HV6116'FEET TO A POINT WHERE THE PAVED ROAD CURVES SOUTH AND A SIDE ROAD
 HV6116'LEADING EAST.  TURN LEFT AND GO EAST ON A PRIVATE DRIVE FOR 0.15
 HV6116'MILE TO THE STATION ON THE RIGHT BETWEEN THE 20TH. AND THE
 HV6116'21ST. SMALL TREE WHICH LINES BOTH SIDES OF THE ROAD.
 HV6116'
 HV6116'THE STATION MARK IS A STANDARD DISK STAMPED DICKINSON 2 1974, SET
 HV6116'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HV6116'WITH THE SURFACE.  IT IS 3 FEET NORTH OF THE NORTH EDGE OF A
 HV6116'CULTIVATED FIELD, 9.5 FEET SOUTHEAST OF THE 20TH. SMALL TREE, 12
 HV6116'FEET SOUTH OF THE CENTER OF THE PRIVATE DRIVE AND 198 FEET WEST
 HV6116'OF THE SOUTHWEST CORNER OF MR. MILLERS HOUSE.
 HV6116'
 HV6116'REFERENCE MARK 4 IS A STANDARD DISK STAMPED DICKINSON 2 NO 4
 HV6116'1974, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 HV6116'IS FLUSH WITH THE SURFACE.  IT IS 6 FEET SOUTHWEST OF THE 19TH.
 HV6116'SMALL TREE AND 15 FEET SOUTH OF THE CENTER OF THE PRIVATE DRIVE.
 HV6116'
 HV6116'REFERENCE MARK 5 IS A STANDARD DISK STAMPED DICKINSON 2 NO 5 1974,
 HV6116'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 HV6116'FLUSH WITH THE SURFACE.  IT IS 13 FEET NORTH-NORTHWEST OF THE
 HV6116'CENTER OF THE PRIVATE DRIVE AND 24 FEET NORTH OF THE 20TH. TREE.
 HV6116'
 HV6116'REFERENCE MARK 6 IS A STANDARD DISK STAMPED DICKINSON 2 NO 6
 HV6116'1974, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 HV6116'IS FLUSH WITH THE SURFACE.  IT IS 1.5 FEET NORTH OF A WOODEN
 HV6116'FENCE 1 FEET SOUTH OF THE CENTER OF THE PAVED ROAD, 6.6 FEET
 HV6116'EAST-NORTHEAST OF A WITNESS POST AND 44 FEET EAST OF A POWERLINE
 HV6116'POLE NUMBERED 14.
 HV6116'
 HV6116'TRIANGULATION STATION DICKINSON 1934 WILL BE DESTROYED IN THE
 HV6116'SUMMER OF 1974 BY MARYLAND DEPARTMENT OF NATURAL RESOURCES.
 HV6116
 HV6116                          STATION RECOVERY (2005)
 HV6116
 HV6116'RECOVERY NOTE BY US POWER SQUADRON 2005 (KMD)
 HV6116'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4734 ***********************************************************************
 AB4734  DESIGNATION -  DIEHL
 AB4734  PID         -  AB4734
 AB4734  STATE/COUNTY-  MD/CARROLL
 AB4734  COUNTRY     -  US
 AB4734  USGS QUAD   -  TANEYTOWN (2016)
 AB4734
 AB4734                         *CURRENT SURVEY CONTROL
 AB4734  ______________________________________________________________________
 AB4734* NAD 83(2011) POSITION- 39 39 45.92285(N) 077 08 38.82200(W)   ADJUSTED
 AB4734* NAD 83(2011) ELLIP HT-   140.050 (meters)        (06/27/12)   ADJUSTED
 AB4734* NAD 83(2011) EPOCH   -  2010.00
 AB4734* NAVD 88 ORTHO HEIGHT -   172.9   (meters)      567.    (feet) GPS OBS
 AB4734  ______________________________________________________________________
 AB4734  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4734  GEOID HEIGHT    -        -32.893 (meters)                     GEOID99
 AB4734  GEOID HEIGHT    -        -32.896 (meters)                     GEOID18
 AB4734  NAD 83(2011) X  -  1,093,985.462 (meters)                     COMP
 AB4734  NAD 83(2011) Y  - -4,793,549.427 (meters)                     COMP
 AB4734  NAD 83(2011) Z  -  4,049,320.040 (meters)                     COMP
 AB4734  LAPLACE CORR    -          4.84  (seconds)                    DEFLEC18
 AB4734
 AB4734  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4734  Standards:
 AB4734         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4734            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4734  -------------------------------------------------------------------
 AB4734  NETWORK    1.10   2.31           0.51   0.33   1.18      0.38149882
 AB4734  -------------------------------------------------------------------
 AB4734  Click here for local accuracies and other accuracy information.
 AB4734
 AB4734.The horizontal coordinates were established by GPS observations
 AB4734.and adjusted by the National Geodetic Survey in June 2012.
 AB4734
 AB4734.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4734.been affixed to the stable North American tectonic plate. See 
 AB4734.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4734
 AB4734.The horizontal coordinates are valid at the epoch date displayed above
 AB4734.which is a decimal equivalence of Year/Month/Day.
 AB4734
 AB4734.The orthometric height was determined by GPS observations and a
 AB4734.high-resolution geoid model.
 AB4734
 AB4734.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4734.GEOID18 height accuracy estimate available here.
 AB4734
 AB4734.Click photographs - Photos may exist for this station.
 AB4734
 AB4734.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4734
 AB4734.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4734
 AB4734.The ellipsoidal height was determined by GPS observations
 AB4734.and is referenced to NAD 83.
 AB4734
 AB4734. The following values were computed from the NAD 83(2011) position.
 AB4734
 AB4734;                    North         East     Units Scale Factor Converg.
 AB4734;SPC MD       -   221,595.426   387,632.405   MT  1.00004415   -0 05 25.6
 AB4734;SPC MD       -   727,017.66  1,271,757.32   sFT  1.00004415   -0 05 25.6
 AB4734;UTM  18      - 4,392,524.687   316,073.570   MT  1.00001650   -1 22 08.1
 AB4734
 AB4734!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4734!SPC MD       -   0.99997803  x   1.00004415  =   1.00002218
 AB4734!UTM  18      -   0.99997803  x   1.00001650  =   0.99999453
 AB4734
 AB4734:                Primary Azimuth Mark                     Grid Az
 AB4734:SPC MD       -  DIEHL AZ MK                              056 02 38.9
 AB4734:UTM  18      -  DIEHL AZ MK                              057 19 21.4
 AB4734
 AB4734_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1607392524(NAD 83)
 AB4734
 AB4734|---------------------------------------------------------------------|
 AB4734| PID    Reference Object                     Distance      Geod. Az  |
 AB4734|                                                           dddmmss.s |
 AB4734| AB4708 DIEHL AZ MK                         APPROX. 1.1 KM 0555713.3 |
 AB4734|---------------------------------------------------------------------|
 AB4734
 AB4734                          SUPERSEDED SURVEY CONTROL
 AB4734
 AB4734  NAD 83(2007)-  39 39 45.92311(N)    077 08 38.82242(W) AD(2002.00) 0
 AB4734  ELLIP H (02/10/07)  140.060  (m)                       GP(2002.00)    
 AB4734  ELLIP H (08/30/02)  140.033  (m)                       GP(       ) 4 2
 AB4734  NAD 83(1991)-  39 39 45.92236(N)    077 08 38.82309(W) AD(       ) 1
 AB4734  ELLIP H (07/03/96)  139.989  (m)                       GP(       ) 1 1
 AB4734  NAVD 88 (07/03/96)  172.9    (m)  GEOID93  model used  GPS OBS        
 AB4734
 AB4734.Superseded values are not recommended for survey control.
 AB4734
 AB4734.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4734.See file dsdata.pdf to determine how the superseded data were derived.
 AB4734
 AB4734_MARKER: DD = SURVEY DISK
 AB4734_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4734_STAMPING: DIEHL 1993
 AB4734_MARK LOGO: MD-013
 AB4734_PROJECTION: RECESSED 3 CENTIMETERS
 AB4734_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4734+STABILITY: SURFACE MOTION
 AB4734_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4734+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2020
 AB4734
 AB4734  HISTORY     - Date     Condition        Report By
 AB4734  HISTORY     - 1993     MONUMENTED       MD-013
 AB4734  HISTORY     - 20080901 GOOD             GEOCAC
 AB4734  HISTORY     - 20200630 GOOD             BASE9
 AB4734
 AB4734                          STATION DESCRIPTION
 AB4734
 AB4734'DESCRIBED BY CARROLL COUNTY MARYLAND 1993
 AB4734'STATION IS LOCATED ABOUT 2.0 MI (3.2 KM) NORTHEAST FO TANEYTOWN. TO
 AB4734'REACH STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE)
 AB4734'AND MD ROUTE 194 (FRANCIS SCOTT KEY HIGHWAY) IN TANEYTOWN, GO EAST ON
 AB4734'MD ROUTE 140 FOR 1.3 MI (2.1 KM) TO THE INTERSECTION WITH SELLS MILL
 AB4734'ROAD. TURN LEFT ON SELLS MILL ROAD AND GO NORTH FOR 1.3 MI (2.1 KM) TO
 AB4734'THE INTERSECTION WITH DIEHL ROAD. TURN LEFT ON DIEHL ROAD AND GO WEST
 AB4734'FOR 1.1 MI (1.8 KM) TO THE STATION ON THE RIGHT. STATION MARK IS SET
 AB4734'IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4734'GROUND. IT IS 13.0 FT (4.0 M) NORTH OF THE CENTERLINE OF THE ROAD,
 AB4734'38.0 FT (11.6 M) WEST OF A 10 IN WALNUT TREE, 3.0 FT (0.9 M) SOUTH OF
 AB4734'A FENCE LINE, 29.0 FT (8.8 M) EAST OF A 12 IN CEDAR TREE AND 102 FT
 AB4734'(31.1 M) SOUTHEAST OF A CORNER OF THE FENCE.
 AB4734
 AB4734                          STATION RECOVERY (2008)
 AB4734
 AB4734'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 AB4734'NOTE - FENCE LINE HAS BEEN MOVED - DISK IS 1 FOOT S OF THE CURRENT
 AB4734'FENCE LINE.
 AB4734'
 AB4734
 AB4734                          STATION RECOVERY (2020)
 AB4734
 AB4734'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2020 (DRD)
 AB4734'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4708 ***********************************************************************
 AB4708  DESIGNATION -  DIEHL AZ MK
 AB4708  PID         -  AB4708
 AB4708  STATE/COUNTY-  MD/CARROLL
 AB4708  COUNTRY     -  US
 AB4708  USGS QUAD   -  TANEYTOWN (2016)
 AB4708
 AB4708                         *CURRENT SURVEY CONTROL
 AB4708  ______________________________________________________________________
 AB4708* NAD 83(2011) POSITION- 39 40 06.51221(N) 077 07 59.38928(W)   ADJUSTED
 AB4708* NAD 83(2011) ELLIP HT-   133.608 (meters)        (06/27/12)   ADJUSTED
 AB4708* NAD 83(2011) EPOCH   -  2010.00
 AB4708* NAVD 88 ORTHO HEIGHT -   166.5   (meters)      546.    (feet) GPS OBS
 AB4708  ______________________________________________________________________
 AB4708  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4708  GEOID HEIGHT    -        -32.888 (meters)                     GEOID99
 AB4708  GEOID HEIGHT    -        -32.891 (meters)                     GEOID18
 AB4708  NAD 83(2011) X  -  1,094,810.484 (meters)                     COMP
 AB4708  NAD 83(2011) Y  - -4,792,940.207 (meters)                     COMP
 AB4708  NAD 83(2011) Z  -  4,049,804.750 (meters)                     COMP
 AB4708  LAPLACE CORR    -          4.81  (seconds)                    DEFLEC18
 AB4708
 AB4708  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4708  Standards:
 AB4708         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4708            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4708  -------------------------------------------------------------------
 AB4708  NETWORK    0.73   2.08           0.34   0.24   1.06      0.02707331
 AB4708  -------------------------------------------------------------------
 AB4708  Click here for local accuracies and other accuracy information.
 AB4708
 AB4708.The horizontal coordinates were established by GPS observations
 AB4708.and adjusted by the National Geodetic Survey in June 2012.
 AB4708
 AB4708.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4708.been affixed to the stable North American tectonic plate. See 
 AB4708.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4708
 AB4708.The horizontal coordinates are valid at the epoch date displayed above
 AB4708.which is a decimal equivalence of Year/Month/Day.
 AB4708
 AB4708.The orthometric height was determined by GPS observations and a
 AB4708.high-resolution geoid model.
 AB4708
 AB4708.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4708.GEOID18 height accuracy estimate available here.
 AB4708
 AB4708.Click photographs - Photos may exist for this station.
 AB4708
 AB4708.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4708
 AB4708.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4708
 AB4708.The ellipsoidal height was determined by GPS observations
 AB4708.and is referenced to NAD 83.
 AB4708
 AB4708. The following values were computed from the NAD 83(2011) position.
 AB4708
 AB4708;                    North         East     Units Scale Factor Converg.
 AB4708;SPC MD       -   222,229.026   388,573.322   MT  1.00004553   -0 05 00.9
 AB4708;SPC MD       -   729,096.40  1,274,844.31   sFT  1.00004553   -0 05 00.9
 AB4708;UTM  18      - 4,393,137.117   317,028.360   MT  1.00001219   -1 21 43.5
 AB4708
 AB4708!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4708!SPC MD       -   0.99997904  x   1.00004553  =   1.00002457
 AB4708!UTM  18      -   0.99997904  x   1.00001219  =   0.99999123
 AB4708
 AB4708:                Primary Azimuth Mark                     Grid Az
 AB4708:SPC MD       -  DIEHL                                    236 02 39.4
 AB4708:UTM  18      -  DIEHL                                    237 19 22.0
 AB4708
 AB4708_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1702893137(NAD 83)
 AB4708
 AB4708|---------------------------------------------------------------------|
 AB4708| PID    Reference Object                     Distance      Geod. Az  |
 AB4708|                                                           dddmmss.s |
 AB4708| AB4734 DIEHL                               APPROX. 1.1 KM 2355738.5 |
 AB4708|---------------------------------------------------------------------|
 AB4708
 AB4708                          SUPERSEDED SURVEY CONTROL
 AB4708
 AB4708  NAD 83(2007)-  39 40 06.51247(N)    077 07 59.38970(W) AD(2002.00) 0
 AB4708  ELLIP H (02/10/07)  133.618  (m)                       GP(2002.00)    
 AB4708  ELLIP H (08/30/02)  133.586  (m)                       GP(       ) 4 2
 AB4708  NAD 83(1991)-  39 40 06.51156(N)    077 07 59.39049(W) AD(       ) 1
 AB4708  ELLIP H (07/03/96)  133.544  (m)                       GP(       ) 1 1
 AB4708  NAVD 88 (07/03/96)  166.5    (m)  GEOID93  model used  GPS OBS        
 AB4708
 AB4708.Superseded values are not recommended for survey control.
 AB4708
 AB4708.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4708.See file dsdata.pdf to determine how the superseded data were derived.
 AB4708
 AB4708_MARKER: DD = SURVEY DISK
 AB4708_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4708_STAMPING: DIEHL AZIMUTH 1995
 AB4708_MARK LOGO: MD-013
 AB4708_PROJECTION: FLUSH
 AB4708_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4708+STABILITY: SURFACE MOTION
 AB4708_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4708+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2020
 AB4708
 AB4708  HISTORY     - Date     Condition        Report By
 AB4708  HISTORY     - 1995     MONUMENTED       MD-013
 AB4708  HISTORY     - 20080901 GOOD             GEOCAC
 AB4708  HISTORY     - 20200630 GOOD             BASE9
 AB4708
 AB4708                          STATION DESCRIPTION
 AB4708
 AB4708'DESCRIBED BY CARROLL COUNTY MARYLAND 1995 (HAS)
 AB4708'STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) NORTHEAST OF TANEYTOWN AND
 AB4708'ABOUT 10 MI (16.1 KM) NORTHWEST OF WESTMINSTER. TO REACH STATION FROM
 AB4708'THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 194
 AB4708'(FRANCIS SCOTT KEY HIGHWAY) AT TANEYTOWN GO NORTHEAST ON MD ROUTE 194
 AB4708'FOR 1.76 MI (2.83 KM) TO THE INTERSECTION WITH BROWN ROAD. TURN RIGHT
 AB4708'ON BROWN ROAD AND GO EAST FOR 0.44 MI (0.71 KM) TO THE INTERSECTION
 AB4708'WITH HYSER ROAD. TURN RIGHT ON HYSER ROAD AND GO SOUTHEAST FOR 1.0 MI
 AB4708'(1.6 KM) TO THE INTERSECTION WITH SENFT ROAD AND THE STATION ON THE
 AB4708'LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4708'MONUMENT SET FLUSH WITH THE GROUND. IT IS 17.6 FT (5.4 M) NORTHEAST OF
 AB4708'THE CENTERLINE OF HYSER ROAD, 180.5 FT (55.0 M) SOUTHEAST OF THE
 AB4708'CENTERLINE OF SENFT ROAD AND 30.3 FT (9.2 M) NORTHWEST OF POWER POLE
 AB4708'NO.PEF-27070.
 AB4708
 AB4708                          STATION RECOVERY (2008)
 AB4708
 AB4708'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 AB4708'RECOVERED IN GOOD CONDITION.
 AB4708
 AB4708                          STATION RECOVERY (2020)
 AB4708
 AB4708'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2020 (DRD)
 AB4708'THE MARK IS 2.62 M (8.6 FT) NORTHEAST FROM THE NORTH EDGE OF HYSER
 AB4708'ROAD AND 5.74 M (18.8 FT) NORTHEAST FROM THE APPROXIMATE CENTERLINE OF
 AB4708'HYSER ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5400 ***********************************************************************
 HV5400  DESIGNATION -  DIGGS
 HV5400  PID         -  HV5400
 HV5400  STATE/COUNTY-  MD/CHARLES
 HV5400  COUNTRY     -  US
 HV5400  USGS QUAD   -  NANJEMOY (2016)
 HV5400
 HV5400                         *CURRENT SURVEY CONTROL
 HV5400  ______________________________________________________________________
 HV5400* NAD 83(1993) POSITION- 38 23 13.81123(N) 077 08 45.64342(W)   ADJUSTED
 HV5400* NAD 83(1993) ELLIP HT-   -26.677 (meters)        (11/14/94)   ADJUSTED
 HV5400* NAVD 88 ORTHO HEIGHT -     6.3   (meters)       21.    (feet) GPS OBS
 HV5400  ______________________________________________________________________
 HV5400  NAVD 88 orthometric height was determined with an earlier geoid model
 HV5400  GEOID HEIGHT    -        -32.937 (meters)                     GEOID18
 HV5400  NAD 83(1993) X  -  1,113,634.479 (meters)                     COMP
 HV5400  NAD 83(1993) Y  - -4,880,390.162 (meters)                     COMP
 HV5400  NAD 83(1993) Z  -  3,939,203.222 (meters)                     COMP
 HV5400  LAPLACE CORR    -         -5.13  (seconds)                    DEFLEC18
 HV5400  HORZ ORDER      -  FIRST
 HV5400  ELLP ORDER      -  FOURTH    CLASS II
 HV5400
 HV5400.The horizontal coordinates were established by classical geodetic methods
 HV5400.and adjusted by the National Geodetic Survey in November 1994.
 HV5400
 HV5400.The orthometric height was determined by GPS observations and a
 HV5400.high-resolution geoid model.
 HV5400
 HV5400.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5400.GEOID18 height accuracy estimate available here.
 HV5400
 HV5400.Click photographs - Photos may exist for this station.
 HV5400
 HV5400.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV5400
 HV5400.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5400
 HV5400.The ellipsoidal height was determined by GPS observations
 HV5400.and is referenced to NAD 83.
 HV5400
 HV5400. The following values were computed from the NAD 83(1993) position.
 HV5400
 HV5400;                    North         East     Units Scale Factor Converg.
 HV5400;SPC MD       -    79,989.094   387,243.304   MT  0.99998598   -0 05 29.9
 HV5400;SPC MD       -   262,430.89  1,270,480.74   sFT  0.99998598   -0 05 29.9
 HV5400;SPC VA N     - 2,080,846.602 3,618,286.692   MT  0.99995642   +0 50 42.2
 HV5400;SPC VA N     - 6,826,910.89 11,870,995.59   sFT  0.99995642   +0 50 42.2
 HV5400;UTM  18      - 4,250,953.967   312,570.631   MT  1.00003265   -1 19 58.8
 HV5400
 HV5400!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5400!SPC MD       -   1.00000419  x   0.99998598  =   0.99999017
 HV5400!SPC VA N     -   1.00000419  x   0.99995642  =   0.99996061
 HV5400!UTM  18      -   1.00000419  x   1.00003265  =   1.00003684
 HV5400
 HV5400:                Primary Azimuth Mark                     Grid Az
 HV5400:SPC MD       -  DIGGS RM 3                               333 09 46.0
 HV5400:SPC VA N     -  DIGGS RM 3                               332 13 33.9
 HV5400:UTM  18      -  DIGGS RM 3                               334 24 14.9
 HV5400
 HV5400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1257050953(NAD 83)
 HV5400
 HV5400|---------------------------------------------------------------------|
 HV5400| PID    Reference Object                     Distance      Geod. Az  |
 HV5400|                                                           dddmmss.s |
 HV5400| DC6195 DIGGS RM 1                           40.444 METERS 01042     |
 HV5400| HV5405 RIVERSIDE WHARF LIGHT               181.705 METERS 14536     |
 HV5400| HV5401 RIVERSIDE                            71.102 METERS 17217     |
 HV5400| HV5399 RIVERSIDE FRONT RANGE LIGHT         270.156 METERS 19935     |
 HV5400| DC6196 DIGGS RM 2                           25.908 METERS 28755     |
 HV5400| DC6197 DIGGS RM 3                                         3330416.1 |
 HV5400|---------------------------------------------------------------------|
 HV5400
 HV5400                          SUPERSEDED SURVEY CONTROL
 HV5400
 HV5400  NAD 83(1991)-  38 23 13.81371(N)    077 08 45.64726(W) AD(       ) 1
 HV5400  NAD 83(1986)-  38 23 13.81251(N)    077 08 45.65818(W) AD(       ) 1
 HV5400  NAD 27      -  38 23 13.36300(N)    077 08 46.74000(W) AD(       ) 1
 HV5400  NGVD 29 (07/19/86)    7.3    (m)           24.     (f) VERT ANG       
 HV5400
 HV5400.Superseded values are not recommended for survey control.
 HV5400
 HV5400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5400.See file dsdata.pdf to determine how the superseded data were derived.
 HV5400
 HV5400_MARKER: DS = TRIANGULATION STATION DISK
 HV5400_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5400_STAMPING: DIGGS 1934
 HV5400_MARK LOGO: CGS
 HV5400_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV5400_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 HV5400+STABILITY: POSITION/ELEVATION WELL
 HV5400_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV5400+SATELLITE: SATELLITE OBSERVATIONS - April 09, 1992
 HV5400
 HV5400  HISTORY     - Date     Condition        Report By
 HV5400  HISTORY     - 1934     MONUMENTED       CGS
 HV5400  HISTORY     - 1934     GOOD             CGS
 HV5400  HISTORY     - 1956     GOOD             CGS
 HV5400  HISTORY     - 1959     GOOD             CGS
 HV5400  HISTORY     - 1962     GOOD             CGS
 HV5400  HISTORY     - 1969     GOOD             DMA
 HV5400  HISTORY     - 19920409 GOOD             NOS
 HV5400
 HV5400                          STATION DESCRIPTION
 HV5400
 HV5400'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV5400'THE STATION IS ABOUT 100 YARDS W OF RIVERSIDE POST OFFICE
 HV5400'(HARRISONS STORE), ON A SMALL BLUFF OVERLOOKING THE N BANK OF THE
 HV5400'POTOMAC RIVER.  THE MARK PROJECTS ABOUT 6 INCHES, IN AN
 HV5400'UNCULTIVATED FIELD, ABOUT 3 YARDS N OF THE EDGE OF THE BLUFF,
 HV5400'100 YARDS NW OF THE RIVER BANK, ABOUT 75 YARDS N OF AN OLD
 HV5400'SHACK, 85 FEET W OF THE CENTER LINE OF THE PAVED ROAD, 41 FEET
 HV5400'WNW OF A LARGE LOCUST TREE, 20 FEET S OF RANGE WITH THE N END
 HV5400'OF HARRISONS STORE.
 HV5400'
 HV5400'SURFACE, UNDERGROUND, AND AZIMUTH MARKS ARE STANDARD BRONZE DISKS
 HV5400'SET IN CONCRETE.  REFERENCE MARK NO. 1 IS
 HV5400'132.68 FEET NNE OF THE STATION, 25 FEET E OF THE
 HV5400'CENTER LINE OF THE PAVED ROAD, UNDER A RAIL FENCE AND 5 FEET S
 HV5400'OF THE N END OF THE FENCE, 45 FEET WSW OF THE SW CORNER OF A
 HV5400'COMBINATION BARN AND GARAGE THAT STANDS DIRECTLY BEHIND
 HV5400'HARRISONS STORE.  REFERENCE MARK NO.2 IS 85.00 FEET WNW OF THE
 HV5400'STATION, IN THE SAME UNCULTIVATED FIELD.  REFERENCE MARK NO.3,
 HV5400'THE AZIMUTH MARK, PROJECTS ABOUT 6 INCHES, AND IS IN THE
 HV5400'FENCE LINE BETWEEN A FIELD AND A LANE, 0.4 MILE N OF THE
 HV5400'STATION, 0.2 MILE NE OF THE ROAD, 83 YARDS SW OF A HOUSE, AND IS
 HV5400'VISIBLE FROM THE GROUND AT STATION.
 HV5400'
 HV5400'REACHED FROM LA PLATA BY STATE HIGHWAY 6, FOLLOWING SIGNS, 28
 HV5400'MILES TO THE RIVER.
 HV5400'
 HV5400'STATION RIVERSIDE WAS TRAVERSED TO FROM DIGGS AND IS RECORDED
 HV5400'IN VOLUME 25, PAGE 26.
 HV5400'
 HV5400'123-FOOT TOWER REQUIRED TO CLEAR RESERVOIR LINE.
 HV5400'
 HV5400'150-FOOT TOWER REQUIRED TO CLEAR LINE TO BRENTS POINT.
 HV5400'
 HV5400'METOMPKIN 3 AND RIVERSIDE, 1928, VISIBLE FROM GROUND AT STATION.
 HV5400
 HV5400                          STATION RECOVERY (1934)
 HV5400
 HV5400'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934
 HV5400'RECOVERED IN GOOD CONDITION.
 HV5400
 HV5400                          STATION RECOVERY (1956)
 HV5400
 HV5400'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (MLC)
 HV5400'STATION RECOVERED AS DESCRIBED BY J. BOWIE, JR. IN 1934 AND ALL
 HV5400'MARKS WERE IN GOOD CONDITION.  THE FOLLOWING IS A COMPLETE NEW
 HV5400'DESCRIPTION--
 HV5400'
 HV5400'STATION IS LOCATED ON A LOW BLUFF OVERLOOKING THE N BANK OF
 HV5400'THE POTOMAC RIVER, AND NEAR THE S OR POTOMAC RIVER END OF STATE
 HV5400'ROUTE 425.  THE MARK IS ABOUT 18 FT. N OF THE EDGE OF THE BLUFF,
 HV5400'57 FT. W OF THE RIGHT-OF-WAY FENCE LINE, 78 FT. SE OF THE MORE
 HV5400'E OF TWO LARGE TREES, IN THE SE CORNER OF A SMALL UNCULTIVATED
 HV5400'AREA OF A SMALL PASTURE OWNED BY MR. BURNETTE.  THE STATION MARK
 HV5400'PROJECTS ABOUT 3 IN. AND THE DISK IS STAMPED DIGGS 1934
 HV5400'
 HV5400'REFERENCE MARK 1 IS ABOUT 1 FT. E OF A BOARD RIGHT-OF-WAY
 HV5400'FENCE AND AT THE N END OF THE FENCE, ABOUT HALFWAY BETWEEN THE
 HV5400'BLACK-TOP ROAD AND A PRIVATE DRIVEWAY.  THE MARK PROJECTS ABOUT
 HV5400'8 IN. AND THE DISK IS STAMPED DIGGS RM 1 1934.
 HV5400'
 HV5400'REFERENCE MARK 2 IS ABOUT 27 FT. NE OF THE MORE E OF TWO LARGE
 HV5400'TREES AND 66 FT. W OF THE RIGHT-OF-WAY FENCE LINE.  THE MARK
 HV5400'PROJECTS ABOUT 3 IN. AND THE DISK IS STAMPED DIGGS RM 2 1934
 HV5400'
 HV5400'REFERENCE MARK 3 IS ABOUT 0.1 MI. E OF STATE ROUTE 425, 85
 HV5400'YD. W OF A LARGE WHITE HOUSE, 42 PACES E OF A TELEPHONE POLE AND
 HV5400'AT THE N EDGE OF A DRIVEWAY.  THE MARK PROJECTS ABOUT 8 IN. AND
 HV5400'THE DISK IS STAMPED DIGGS RM 3 1956.
 HV5400'
 HV5400'THE STATION MAY BE REACHED FROM THE JUNCTION OF U.S. HIGHWAY 301
 HV5400'AND STATE ROUTE 6 AT THE W EDGE OF LA PLATA BY GOING W ON STATE
 HV5400'ROUTE 6 FOR 12.5 MI. TO A JUNCTION WITH STATE ROUTE 425.  TURN
 HV5400'LEFT AND CONTINUE S ON STATE ROUTE 425 FOR 9.4 MI. TO THE JUNCTION
 HV5400'OF STATE ROUTE 224.  THENCE CONTINUE FOR 0.35 MI. TO A BOARD GATE
 HV5400'ON THE LEFT AT ENTRANCE TO A FARM LANE.  (REFERENCE MARK 3 IS
 HV5400'ABOUT 0.1 MI. E FROM HERE.) CONTINUE S FOR ABOUT 0.4 MI. TO
 HV5400'END OF ROAD AND THE STATION SITE ON THE RIGHT AS DESCRIBED
 HV5400'BELOW.
 HV5400'
 HV5400'OBSERVATIONS WERE MADE FROM A 110-FT. TOWER.
 HV5400
 HV5400                          STATION RECOVERY (1959)
 HV5400
 HV5400'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV5400'THE STATION MARK AND REFERENCE MARKS 1, 2, AND 3 WERE RECOVERED
 HV5400'AND FOUND TO BE IN GOOD CONDITION.  THE DESCRIPTION OF
 HV5400'M.L.C., 1956 IS ADEQUATE AND COMPLETE EXCEPT THAT THERE IS NOW
 HV5400'A WHITE WITNESS POST, PROJECTING ABOUT 2 FEET ABOVE GROUND, 3
 HV5400'FEET SOUTH OF THE STATION.  STATION IS STAMPED DIGGS,1934
 HV5400'
 HV5400'REFERENCE MARK 1, N-NE OF THE STATION, WAS IN GOOD
 HV5400'CONDITION.  DISTANCE FROM STATION.  METERS AND 132.69
 HV5400'FEET.  STAMPED DIGGS RM 1,1934.
 HV5400'
 HV5400'REFERENCE MARK 2 IS W-NW OF THE STATION 25.908 METERS, 85.00
 HV5400'FEET.  MARK IS STAMPED DIGGS RM 2, 1934.
 HV5400'
 HV5400'REFERENCE MARK 3, STAMPED DIGGS RM 3, 1934, IS APPROX. 0.4 MILE
 HV5400'NORTH OF STATION AND IS IN GOOD CONDITION.
 HV5400'
 HV5400'ALL REFERENCE MARKS AND THE STATION CAN BE FOUND FROM THE
 HV5400'DESCRIPTION OF M.L.C., 1956.
 HV5400
 HV5400                          STATION RECOVERY (1962)
 HV5400
 HV5400'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (DGR)
 HV5400'STATION AND 2 REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.
 HV5400'
 HV5400'REFERENCE MARK NO. 3 WAS NOT SEARCHED FOR.
 HV5400'
 HV5400'STATION MARK IS STAMPED DIGGS 1934.
 HV5400'
 HV5400'REFERENCE MARK NO. 1 IS STAMPED DIGGS REFERENCE MARK NO. 1, 1934.
 HV5400'
 HV5400'REFERENCE MARK NO.2 IS STAMPED DIGGS REFERENCE MARK NO. 2, 1934.
 HV5400'
 HV5400'THE PREVIOUS DESCRIPTION BY C. L. C., 1956, IS ADEQUATE FOR
 HV5400'LOCATING THE STATION.
 HV5400
 HV5400                          STATION RECOVERY (1969)
 HV5400
 HV5400'RECOVERY NOTE BY DEFENSE MAP AGENCY 1969
 HV5400'STATION AND RM 1 AND RM 2 WERE RECOVERED.  STATION LOCATED ON
 HV5400'BLUFF OVERLOOKING THE N BANK OF THE POTOMAC RIVER AND NEAR THE
 HV5400'S OR POTOMAC RIVER END OF ROUTE 6 ON LAND OWNED BY CARL HAMPTON.
 HV5400'
 HV5400'TO REACH STATION FROM JUNCTION OF U.S. 301 AND ROUTE 6 AT W
 HV5400'EDGE OF LA PLATA, GO W ON ROUTE 6 FOR 12.5 MILES TO JUNCTION
 HV5400'WITH ROUTE 425.  TURN LEFT AND GO S ON 425 FOR ABOUT 7.5 MILES
 HV5400'TO A T-JUNCTION WITH THE SAME ROUTE 6.  TURN LEFT ON ROUTE 6 FOR
 HV5400'2.5 MILES TO THE POTOMAC RIVER AT OLD RIVERSIDE POST
 HV5400'OFFICE.  STATION IS ON A LOW BLUFF ON THE RIGHT.
 HV5400
 HV5400                          STATION RECOVERY (1992)
 HV5400
 HV5400'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 HV5400'STATION IS LOCATED ALONG THE NORTH BANK OF THE POTOMAC RIVER IN THE
 HV5400'COMMUNITY OF RIVERSIDE ON THE PROPERTY OF CARL C. HAMPTON.
 HV5400'TO REACH
 HV5400'FROM THE Y INTERSECTION OF MD HWY 6 AND MD HWY 425 IN GRAYTON, GO
 HV5400'SOUTH ON MD HWY 6 FOR 5.1 MI (8.21 KM) TO THE EDGE OF THE NORTH BLUFF
 HV5400'OF THE POTOMAC RIVER AND STATION IS ON THE RIGHT.
 HV5400'STATION IS MARKED
 HV5400'BY A STANDARD COAST AND GEODETIC SURVEY TRIANGULATION DISK STAMPED
 HV5400'---DIGGS 1934---. IT IS SET IN A ROUND CONCRETE MONUMENT THAT IS FLUSH
 HV5400'WITH THE GROUND.  THE FIRST ---G--- IN THE STAMPING HAS BEEN MARRED BY
 HV5400'MACHINERY.  IT IS 42.2 M (138.45 FT) SOUTH-SOUTHWEST OF A LARGE
 HV5400'PROMINENT CEDAR, 7.9 M (25.92 FT) NORTHWEST OF THE NORTHWEST EDGE OF A
 HV5400'BRUSH LINE ON BLUFF AND 16.3 M (53.48 FT) SOUTHWEST OF THE SOUTHWEST
 HV5400'EDGE OF BRUSH LINE ALONG ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1205 ***********************************************************************
 JW1205  FBN         -  This is a Federal Base Network Control Station.
 JW1205  DESIGNATION -  DILLON
 JW1205  PID         -  JW1205
 JW1205  STATE/COUNTY-  MD/WASHINGTON
 JW1205  COUNTRY     -  US
 JW1205  USGS QUAD   -  HANCOCK (2016)
 JW1205
 JW1205                         *CURRENT SURVEY CONTROL
 JW1205  ______________________________________________________________________
 JW1205* NAD 83(2011) POSITION- 39 42 09.10139(N) 078 14 02.70950(W)   ADJUSTED
 JW1205* NAD 83(2011) ELLIP HT-   167.713 (meters)        (06/27/12)   ADJUSTED
 JW1205* NAD 83(2011) EPOCH   -  2010.00
 JW1205* NAVD 88 ORTHO HEIGHT -   201.627 (meters)      661.50  (feet) ADJUSTED
 JW1205  ______________________________________________________________________
 JW1205  GEOID HEIGHT    -        -33.911 (meters)                     GEOID18
 JW1205  NAD 83(2011) X  -  1,002,032.081 (meters)                     COMP
 JW1205  NAD 83(2011) Y  - -4,810,752.670 (meters)                     COMP
 JW1205  NAD 83(2011) Z  -  4,052,736.160 (meters)                     COMP
 JW1205  LAPLACE CORR    -         -4.53  (seconds)                    DEFLEC18
 JW1205  DYNAMIC HEIGHT  -        201.509 (meters)      661.12  (feet) COMP
 JW1205  MODELED GRAVITY -    980,038.9   (mgal)                       NAVD 88
 JW1205
 JW1205  VERT ORDER      -  FIRST     CLASS II
 JW1205
 JW1205  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1205  Standards:
 JW1205         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1205            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1205  -------------------------------------------------------------------
 JW1205  NETWORK    0.73   1.27           0.32   0.27   0.65     -0.12121265
 JW1205  -------------------------------------------------------------------
 JW1205  Click here for local accuracies and other accuracy information.
 JW1205
 JW1205.The horizontal coordinates were established by GPS observations
 JW1205.and adjusted by the National Geodetic Survey in June 2012.
 JW1205
 JW1205.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1205.been affixed to the stable North American tectonic plate. See 
 JW1205.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1205
 JW1205.The horizontal coordinates are valid at the epoch date displayed above
 JW1205.which is a decimal equivalence of Year/Month/Day.
 JW1205
 JW1205.The orthometric height was determined by differential leveling and
 JW1205.adjusted by the NATIONAL GEODETIC SURVEY
 JW1205.in June 1991.
 JW1205
 JW1205.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1205.GEOID18 height accuracy estimate available here.
 JW1205
 JW1205.Click photographs - Photos may exist for this station.
 JW1205
 JW1205.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1205
 JW1205.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1205
 JW1205.The ellipsoidal height was determined by GPS observations
 JW1205.and is referenced to NAD 83.
 JW1205
 JW1205.The dynamic height is computed by dividing the NAVD 88
 JW1205.geopotential number by the normal gravity value computed on the
 JW1205.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1205.degrees latitude (g = 980.6199 gals.).
 JW1205
 JW1205.The modeled gravity was interpolated from observed gravity values.
 JW1205
 JW1205. The following values were computed from the NAD 83(2011) position.
 JW1205
 JW1205;                    North         East     Units Scale Factor Converg.
 JW1205;SPC MD       -   226,717.109   294,158.289   MT  1.00005394   -0 46 28.4
 JW1205;SPC MD       -   743,821.05    965,084.32   sFT  1.00005394   -0 46 28.4
 JW1205;SPC PA S     -    41,107.587   558,481.590   MT  1.00004410   -0 18 50.7
 JW1205;SPC PA S     -   134,867.14  1,832,285.02   sFT  1.00004410   -0 18 50.7
 JW1205;SPC WV N     -   134,266.525   708,558.973   MT  0.99994163   +0 48 26.5
 JW1205;SPC WV N     -   440,506.09  2,324,663.90   sFT  0.99994163   +0 48 26.5
 JW1205;UTM  17      - 4,398,399.533   737,136.019   MT  1.00029237   +1 46 03.7
 JW1205
 JW1205!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1205!SPC MD       -   0.99997369  x   1.00005394  =   1.00002763
 JW1205!SPC PA S     -   0.99997369  x   1.00004410  =   1.00001779
 JW1205!SPC WV N     -   0.99997369  x   0.99994163  =   0.99991532
 JW1205!UTM  17      -   0.99997369  x   1.00029237  =   1.00026605
 JW1205
 JW1205:                Primary Azimuth Mark                     Grid Az
 JW1205:SPC MD       -  DILLON AZ MK                             104 33 00.3
 JW1205:SPC PA S     -  DILLON AZ MK                             104 05 22.6
 JW1205:SPC WV N     -  DILLON AZ MK                             102 58 05.4
 JW1205:UTM  17      -  DILLON AZ MK                             102 00 28.2
 JW1205
 JW1205_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD3713698399(NAD 83)
 JW1205
 JW1205|---------------------------------------------------------------------|
 JW1205| PID    Reference Object                     Distance      Geod. Az  |
 JW1205|                                                           dddmmss.s |
 JW1205| CK8073 SW COR HOUSE                         30.145 METERS 00237     |
 JW1205| CJ9658 DILLON RM 3                           8.379 METERS 04429     |
 JW1205| CJ9656 DILLON RM 1                          31.319 METERS 05235     |
 JW1205| JW1206 DILLON AZ MK                                       1034631.9 |
 JW1205| CJ9657 DILLON RM 2                          11.070 METERS 23154     |
 JW1205| JW1394 SIDELING HILL WU STA 17 TWR         APPROX. 5.8 KM 2554027.5 |
 JW1205|---------------------------------------------------------------------|
 JW1205
 JW1205                          SUPERSEDED SURVEY CONTROL
 JW1205
 JW1205  NAD 83(2007)-  39 42 09.10162(N)    078 14 02.71026(W) AD(2002.00) 0
 JW1205  ELLIP H (02/10/07)  167.736  (m)                       GP(2002.00)    
 JW1205  ELLIP H (02/12/02)  167.738  (m)                       GP(       ) 4 1
 JW1205  NAD 83(1991)-  39 42 09.10152(N)    078 14 02.70997(W) AD(       ) B
 JW1205  ELLIP H (10/23/91)  167.663  (m)                       GP(       ) 4 1
 JW1205  NAD 83(1986)-  39 42 09.10317(N)    078 14 02.72039(W) AD(       ) 2
 JW1205  NAD 27      -  39 42 08.76900(N)    078 14 03.69400(W) AD(       ) 2
 JW1205  NAVD 88             201.63   (m)          661.5    (f) LEVELING    3  
 JW1205  NGVD 29             201.87   (m)          662.3    (f) LEVELING    3  
 JW1205
 JW1205.Superseded values are not recommended for survey control.
 JW1205
 JW1205.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1205.See file dsdata.pdf to determine how the superseded data were derived.
 JW1205
 JW1205_MARKER: DS = TRIANGULATION STATION DISK
 JW1205_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1205_STAMPING: DILLON 1955
 JW1205_MARK LOGO: CGS
 JW1205_PROJECTION: FLUSH
 JW1205_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1205_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1205+STABILITY: SURFACE MOTION
 JW1205_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1205+SATELLITE: SATELLITE OBSERVATIONS - March 31, 2007
 JW1205
 JW1205  HISTORY     - Date     Condition        Report By
 JW1205  HISTORY     - 1955     MONUMENTED       CGS
 JW1205  HISTORY     - 1974     GOOD             NGS
 JW1205  HISTORY     - 1983     GOOD             NGS
 JW1205  HISTORY     - 19900906 GOOD             NGS
 JW1205  HISTORY     - 19901128 GOOD             NGS
 JW1205  HISTORY     - 19920828 GOOD             NGS
 JW1205  HISTORY     - 19950607 GOOD             NGS
 JW1205  HISTORY     - 20000201 GOOD             NEILAN
 JW1205  HISTORY     - 20000327 GOOD             MDSHA
 JW1205  HISTORY     - 20030623 GOOD             DEWDAV
 JW1205  HISTORY     - 20070331 GOOD             GEOCAC
 JW1205
 JW1205                          STATION DESCRIPTION
 JW1205
 JW1205'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1205'THE STATION IS ABOUT 3 MILES WEST OF HANCOCK, ON THE CREST OF
 JW1205'TONOLOWAY RIDGE AND ON LAND OWNED BY R.S. DILLON.  IT IS 32 FEET
 JW1205'EAST OF A TELEPHONE POLE, 26 FEET SOUTHWEST OF THE CENTER OF
 JW1205'U.S. HIGHWAY 40 AND 12 FEET NORTHWEST OF THE CENTER OF A FARM
 JW1205'ROAD.
 JW1205'
 JW1205'TO REACH THE STATION FROM THE POST OFFICE IN HANCOCK, GO WEST
 JW1205'ON U.S. HIGHWAY 40 FOR 2.1 MILES TO THE AZIMUTH MARK ON THE LEFT,
 JW1205'CONTINUE WESTERLY ON THE HIGHWAY FOR 1.0 MILE TO THE STATION ON
 JW1205'THE LEFT.
 JW1205'
 JW1205'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1205'STAMPED DILLON 1955.
 JW1205'
 JW1205'REFERENCE MARK 1 IS 18 FEET SOUTHWEST OF THE CENTER OF U.S. HIGHWAY
 JW1205'40, 7 FEET SOUTH OF TELEPHONE POLE AND 3 FEET SOUTH OF A 4 IN X 4 IN
 JW1205'WHITE WITNESS POST.  THE MARK IS FLUSH WITH THE GROUND, AND THE
 JW1205'DISK IS STAMPED DILLON NO 1 1955.
 JW1205'
 JW1205'REFERENCE MARK 2 IS 18 FEET SOUTHWEST OF THE CENTER OF U.S. HIGHWAY
 JW1205'40 AND 6 FEET SOUTH OF A TELEPHONE POLE.  THE MARK IS FLUSH WITH
 JW1205'THE GROUND, AND THE DISK IS STAMPED DILLON NO 2 1955.
 JW1205'
 JW1205'THE AZIMUTH MARK IS 42 FEET EAST OF A POWERLINE POLE, 24 FEET
 JW1205'SOUTH OF THE CENTER OF U.S. HIGHWAY 40 AND 2 FEET WEST OF A 4 IN X 4
 JW1205'IN WHITE WITNESS POST.  THE MARK PROJECTS 2 INCHES, AND THE DISK
 JW1205'IS STAMPED DILLON 1955.
 JW1205
 JW1205                          STATION RECOVERY (1974)
 JW1205
 JW1205'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JW1205'THE STATION MARK AND THE REFERENCE MARK TWO WERE RECOVERED AND
 JW1205'FOUND IN GOOD CONDITION.  REFERENCE MARK 1 WAS NOT FOUND.  THERE
 JW1205'WAS SEVERAL LARGE PIECES OF CONCRETE FOUND WHERE THE REFERENCE
 JW1205'MARK 1 WAS FORMERLY LOCATED.  A NEW REFERENCE MARK 3 WAS
 JW1205'ESTABLISHED AT THIS DATE.  A EXTENSIVE SEARCH WAS MADE FOR THE
 JW1205'AZIMUTH MARK AND IT WAS NOT FOUND.  THE LINE BETWEEN THE STATION
 JW1205'AND THE POINT WHERE THE AZIMUTH MARK WAS SET IS NOW OBSTRUCTED
 JW1205'BY TREES AND THE EXACT POSITION OF THE AZIMUTH MARK COULD NOT
 JW1205'BE DETERMINED.
 JW1205'
 JW1205'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JW1205'
 JW1205'THE STATION IS LOCATED 2-3/4 MILES WEST OF HANCOCK AND ON THE
 JW1205'SOUTH SIDE OF STATE HIGHWAY 144.  THE STATION IS ON THE TOP OF
 JW1205'A SMALL HILL AND ON ROAD RIGHT-OF-WAY.
 JW1205'
 JW1205'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 522
 JW1205'AND STATE HIGHWAY 144 IN THE WEST EDGE OF HANCOCK, GO WESTERLY
 JW1205'ON STATE HIGHWAY 144 FOR 2.8 MILES TO THE TOP OF A SMALL HILL
 JW1205'AND THE STATION ON THE LEFT, JUST OPPOSITE AN OLD 2 STORY HOUSE.
 JW1205'
 JW1205'THE STATION MARK IS A STANDARD DISK STAMPED DILLON 1955, SET
 JW1205'IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 JW1205'WITH THE SURFACE.  IT IS 98.9 FEET SOUTH OF THE SOUTHWEST CORNER
 JW1205'OF THE BASE OF THE FOUNDATION OF THE 2 STORY HOUSE ACROSS THE
 JW1205'ROAD, 30 FEET EAST OF A TELEPHONE POLE NUMBERED 111, 25 FEET
 JW1205'SOUTH OF THE CENTER OF STATE HIGHWAY 144 AND 4.2 FEET SOUTH OF
 JW1205'A WITNESS POST.
 JW1205'
 JW1205'REFERENCE MARK 2 IS A STANDARD DISK STAMPED DILLON NO 2 1955,
 JW1205'SET IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT WHICH IS
 JW1205'1 INCH BELOW THE SURFACE.  IT IS 37 FEET WEST OF THE WITNESS
 JW1205'POST, 25.5 FEET SOUTH OF THE CENTER OF STATE HIGHWAY 144 AND
 JW1205'7 FEET SOUTH OF THE TELEPHONE POLE.
 JW1205'
 JW1205'REFERENCE MARK 3 IS A STANDARD DISK STAMPED DILLON 1955 NO 3
 JW1205'1974, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 JW1205'IS FLUSH WITH THE SURFACE.  IT IS 57 FEET EAST OF THE TELEPHONE
 JW1205'POLE NUMBERED 111, 26 FEET EAST OF THE WITNESS POST AND 22 FEET
 JW1205'SOUTH OF THE CENTER OF STATE HIGHWAY 144.
 JW1205'
 JW1205'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JW1205'2-3/4 MILES WEST OF HANCOCK.
 JW1205
 JW1205                          STATION RECOVERY (1983)
 JW1205
 JW1205'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW1205'4.5 KM (2.8 MI) WEST FROM HANCOCK.
 JW1205'THE MARK IS 0.91 M ABOVE HIGHWAY.
 JW1205'4.5 KM (2.80 MI) WEST ALONG STATE HIGHWAY 144 FROM THE U.S. HIGHWAY
 JW1205'522 OVERPASS BRIDGE IN HANCOCK TO THE MARK ON THE LEFT, ON THE NORTH
 JW1205'EDGE OF AN APPLE ORCHARD, 7.31 METERS (24.0 FT) SOUTH OF THE
 JW1205'CENTERLINE OF THE HIGHWAY, 30.17 METERS (99.0 FT) SOUTHWEST AND ACROSS
 JW1205'THE HIGHWAY FROM A 2-STORY FRAME HOUSE, 9.75 METERS (32.0 FT)
 JW1205'EAST-NORTHEAST OF POWER POLE 111.
 JW1205'THE MARK IS 0.91 METERS  S FROM A WITNESS POST.
 JW1205
 JW1205                          STATION RECOVERY (1990)
 JW1205
 JW1205'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW1205'RECOVERED IN GOOD CONDITION.
 JW1205
 JW1205                          STATION RECOVERY (1990)
 JW1205
 JW1205'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW1205'STATION MARK RECOVERED IN GOOD CONDITION.  OTHER MARKS NOT SEARCHED
 JW1205'FOR.
 JW1205'STATION IS LOCATED ABOUT 4.4 KM (2.7 MI) WEST OF HANCOCK, ON THE CREST
 JW1205'OF A SMALL HILL (TONOLOWAY RIDGE), AND ON HIGHWAY RIGHT-OF-WAY.
 JW1205'OWNERSHIP--STATE HIGHWAY ADMINISTRATION.
 JW1205'TO REACH STATION FROM THE INTERSECTION OF U.S. HIGHWAY 522 AND STATE
 JW1205'HIGHWAY 144 ON THE WEST EDGE OF HANCOCK, GO WESTERLY ON HIGHWAY 144
 JW1205'FOR 4.5 KM (2.8 MI) TO THE TOP OF THE SMALL HILL AND THE STATION ON
 JW1205'THE LEFT, ACROSS THE ROAD FROM AN OLD TWO-STORY HOUSE.
 JW1205'STATION MARK IS SET IN THE TOP OF A 30-CM ROUND CONCRETE POST FLUSH
 JW1205'WITH GROUND.  IT IS 30.14 M (98.88 FT) SOUTH AND ACROSS THE HIGHWAY
 JW1205'FROM THE SOUTHWEST CORNER OF THE BASE OF THE FOUNDATION OF THE OLD
 JW1205'TWO-STORY HOUSE, 9.14 M (29.99 FT) EAST FROM TELEPHONE NUMBER 111,
 JW1205'7.62 M (25.00 FT) SOUTH FROM THE CENTER OF THE HIGHWAY, AND 1.28 M
 JW1205'(4.20 FT) SOUTH FROM A WITNESS POST.
 JW1205
 JW1205                          STATION RECOVERY (1992)
 JW1205
 JW1205'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 JW1205'THE STATION IS LOCATED ABOUT 4.4 KM (2.75 MI) WEST OF HANCOCK, ON THE
 JW1205'CREST OF A SMALL HILL (TONOLOWAY RIDGE), AND ON HIGHWAY RIGHT-OF-WAY.
 JW1205'OWNERSHIP--STATE HIGHWAY ADMINISTRATION.
 JW1205'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 522 AND STATE
 JW1205'HIGHWAY 144 ON THE WEST EDGE OF HANCOCK, GO WESTERLY ON HIGHWAY 144
 JW1205'FOR 4.5 KM (2.80 MI) TO THE TOP OF THE SMALL HILL AND THE STATION ON
 JW1205'THE LEFT, ACROSS THE ROAD FROM AN OLD TWO-STORY HOUSE.
 JW1205'LOCATED 30.14 M (98.88 FT) SOUTH AND ACROSS THE HIGHWAY FROM THE
 JW1205'SOUTHWEST CORNER OF THE BASE OF THE FOUNDATION OF THE OLD TWO-STORY
 JW1205'HOUSE, 9.14 M (29.99 FT) EAST FROM TELEPHONE POLE NUMBER 111, 7.62 M
 JW1205'(25.00 FT) SOUTH FROM THE CENTER OF HIGHWAY 144, 1.28 M (4.20 FT)
 JW1205'SOUTH FROM A WITNESS POST AND ABOUT 1.0 M (3.3 FT) HIGHER THAN THE
 JW1205'ROAD.
 JW1205
 JW1205                          STATION RECOVERY (1995)
 JW1205
 JW1205'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (DMM)
 JW1205'RECOVERED AS DESCRIBED BY NGS IN 1990.
 JW1205
 JW1205                          STATION RECOVERY (2000)
 JW1205
 JW1205'RECOVERY NOTE BY THE NEILAN ENGINEERS INCORPORATED 2000 (TEK)
 JW1205'RECOVERED AS DESCRIBED.
 JW1205
 JW1205                          STATION RECOVERY (2000)
 JW1205
 JW1205'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JW1205'THE TO REACH IS ADEQUATE WITH THE FOLLOWING REFERENCE UPDATES.  IT IS
 JW1205'32.2 FT (9.8 M) EAST FROM TELEPHONE POLE 111, 26.4 FT (8.0 M) SOUTH
 JW1205'FROM THE CENTERLINE OF THE HIGHWAY, AND 1.7 FT (0.5 M) SOUTH OF A
 JW1205'CARSONITE WITNESS POST.  THE ORIGINAL WITNESS SIGN HAS BEEN DESTROYED.
 JW1205
 JW1205                          STATION RECOVERY (2003)
 JW1205
 JW1205'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (CSW)
 JW1205'RECOVERED IN GOOD CONDITION.
 JW1205
 JW1205                          STATION RECOVERY (2007)
 JW1205
 JW1205'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JW1205'FOUND THE STATION, REFERENCE MARK NO. 2, AND REFERENCE MARK NO. 3.
 JW1205'SEARCHED FOR BUT COULD NOT FIND THE AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1206 ***********************************************************************
 JW1206  DESIGNATION -  DILLON AZ MK
 JW1206  PID         -  JW1206
 JW1206  STATE/COUNTY-  MD/WASHINGTON
 JW1206  COUNTRY     -  US
 JW1206  USGS QUAD   -  HANCOCK (2016)
 JW1206
 JW1206                         *CURRENT SURVEY CONTROL
 JW1206  ______________________________________________________________________
 JW1206* NAD 83(1986) POSITION- 39 41 54.     (N) 078 12 45.     (W)   SCALED
 JW1206* NAVD 88 ORTHO HEIGHT -   194.280 (meters)      637.40  (feet) ADJUSTED
 JW1206  ______________________________________________________________________
 JW1206  GEOID HEIGHT    -        -33.961 (meters)                     GEOID18
 JW1206  DYNAMIC HEIGHT  -        194.168 (meters)      637.03  (feet) COMP
 JW1206  MODELED GRAVITY -    980,045.8   (mgal)                       NAVD 88
 JW1206
 JW1206  VERT ORDER      -  FIRST     CLASS II
 JW1206
 JW1206.The horizontal coordinates were scaled from a map and have
 JW1206.an estimated accuracy of +/- 6 seconds.
 JW1206
 JW1206.The orthometric height was determined by differential leveling and
 JW1206.adjusted by the NATIONAL GEODETIC SURVEY
 JW1206.in June 1991.
 JW1206
 JW1206.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1206.GEOID18 height accuracy estimate available here.
 JW1206
 JW1206.Click photographs - Photos may exist for this station.
 JW1206
 JW1206.The dynamic height is computed by dividing the NAVD 88
 JW1206.geopotential number by the normal gravity value computed on the
 JW1206.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1206.degrees latitude (g = 980.6199 gals.).
 JW1206
 JW1206.The modeled gravity was interpolated from observed gravity values.
 JW1206
 JW1206;                    North         East    Units  Estimated Accuracy
 JW1206;SPC MD       -   226,230.      296,000.      MT  (+/- 180 meters Scaled)
 JW1206
 JW1206_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD390979(NAD 83)
 JW1206
 JW1206                          SUPERSEDED SURVEY CONTROL
 JW1206
 JW1206.No superseded survey control is available for this station.
 JW1206
 JW1206_MARKER: DZ = AZIMUTH MARK DISK
 JW1206_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1206_STAMPING: DILLON 1955
 JW1206_MARK LOGO: CGS
 JW1206_PROJECTION: FLUSH
 JW1206_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1206+STABILITY: SURFACE MOTION
 JW1206
 JW1206  HISTORY     - Date     Condition        Report By
 JW1206  HISTORY     - 1955     MONUMENTED       CGS
 JW1206  HISTORY     - 1983     GOOD             NGS
 JW1206  HISTORY     - 20070331 MARK NOT FOUND   GEOCAC
 JW1206
 JW1206                          STATION DESCRIPTION
 JW1206
 JW1206'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1206'2.4 KM (1.5 MI) WEST FROM HANCOCK.
 JW1206'2.4 KM (1.5 MI) WEST ALONG STATE HIGHWAY 144 FROM THE U.S. HIGHWAY 522
 JW1206'OVERPASS BRIDGE IN HANCOCK TO THE MARK ON THE LEFT, 0.1 KM (0.05 MI)
 JW1206'EAST OF THE JUNCTION OF ROUND TOP ROAD, 8.83 METERS (29.0 FT) SOUTH OF
 JW1206'THE CENTERLINE OF THE HIGHWAY, 13.71 METERS (45.0 FT) EAST-SOUTHEAST
 JW1206'OF POWER POLE 5606.
 JW1206'THE MARK IS 0.61 METERS  NW FROM A WITNESS POST.
 JW1206'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JW1206
 JW1206                          STATION RECOVERY (2007)
 JW1206
 JW1206'RECOVERY NOTE BY GEOCACHING 2007 (WD)
 JW1206'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1501 ***********************************************************************
 JW1501  DESIGNATION -  DINGLE
 JW1501  PID         -  JW1501
 JW1501  STATE/COUNTY-  MD/ALLEGANY
 JW1501  COUNTRY     -  US
 JW1501  USGS QUAD   -  CUMBERLAND (2016)
 JW1501
 JW1501                         *CURRENT SURVEY CONTROL
 JW1501  ______________________________________________________________________
 JW1501* NAD 83(1995) POSITION- 39 38 25.03177(N) 078 47 20.67361(W)   ADJUSTED
 JW1501* NAVD 88 ORTHO HEIGHT -   305.    (meters)     1001.    (feet) SCALED
 JW1501  ______________________________________________________________________
 JW1501  GEOID HEIGHT    -        -32.651 (meters)                     GEOID18
 JW1501  LAPLACE CORR    -         -7.63  (seconds)                    DEFLEC18
 JW1501  HORZ ORDER      -  SECOND
 JW1501
 JW1501.The horizontal coordinates were established by classical geodetic methods
 JW1501.and adjusted by the National Geodetic Survey in April 1998.
 JW1501
 JW1501.The orthometric height was scaled from a topographic map.
 JW1501
 JW1501.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1501.GEOID18 height accuracy estimate available here.
 JW1501
 JW1501.Click photographs - Photos may exist for this station.
 JW1501
 JW1501.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1501
 JW1501. The following values were computed from the NAD 83(1995) position.
 JW1501
 JW1501;                    North         East     Units Scale Factor Converg.
 JW1501;SPC MD       -   220,595.683   246,429.139   MT  1.00003883   -1 07 22.4
 JW1501;SPC MD       -   723,737.67    808,492.93   sFT  1.00003883   -1 07 22.4
 JW1501;SPC PA S     -    34,607.621   510,802.277   MT  1.00005874   -0 40 26.9
 JW1501;SPC PA S     -   113,541.84  1,675,857.14   sFT  1.00005874   -0 40 26.9
 JW1501;SPC WV N     -   126,832.928   661,021.641   MT  0.99994077   +0 27 12.3
 JW1501;SPC WV N     -   416,117.70  2,168,701.83   sFT  0.99994077   +0 27 12.3
 JW1501;UTM  17      - 4,390,169.661   689,719.211   MT  1.00004316   +1 24 39.3
 JW1501
 JW1501!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1501!SPC MD       -   0.99995731  x   1.00003883  =   0.99999613
 JW1501!SPC PA S     -   0.99995731  x   1.00005874  =   1.00001604
 JW1501!SPC WV N     -   0.99995731  x   0.99994077  =   0.99989808
 JW1501!UTM  17      -   0.99995731  x   1.00004316  =   1.00000046
 JW1501
 JW1501:                Primary Azimuth Mark                     Grid Az
 JW1501:SPC MD       -  CONSTITUTION                             074 34 05.1
 JW1501:SPC PA S     -  CONSTITUTION                             074 07 09.6
 JW1501:SPC WV N     -  CONSTITUTION                             072 59 30.4
 JW1501:UTM  17      -  CONSTITUTION                             072 02 03.4
 JW1501
 JW1501_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8971990169(NAD 83)
 JW1501
 JW1501|---------------------------------------------------------------------|
 JW1501| PID    Reference Object                     Distance      Geod. Az  |
 JW1501|                                                           dddmmss.s |
 JW1501| CJ9663 DINGLE RM 1                          18.944 METERS 05010     |
 JW1501| JW1492 CONSTITUTION                        APPROX. 3.5 KM 0732642.7 |
 JW1501| CJ9664 DINGLE RM 2                          17.084 METERS 11301     |
 JW1501| JW1502 CUMBERLAND DINGLE MUN TK              8.910 METERS 20135     |
 JW1501| CJ9662 DINGLE AZ MK                                       3155417.3 |
 JW1501|---------------------------------------------------------------------|
 JW1501
 JW1501                          SUPERSEDED SURVEY CONTROL
 JW1501
 JW1501  NAD 83(1991)-  39 38 25.03152(N)    078 47 20.67644(W) AD(       ) 2
 JW1501  NAD 83(1986)-  39 38 25.03515(N)    078 47 20.68275(W) AD(       ) 2
 JW1501  NAD 27      -  39 38 24.72000(N)    078 47 21.61700(W) AD(       ) 2
 JW1501
 JW1501.Superseded values are not recommended for survey control.
 JW1501
 JW1501.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1501.See file dsdata.pdf to determine how the superseded data were derived.
 JW1501
 JW1501_MARKER: DS = TRIANGULATION STATION DISK
 JW1501_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1501_STAMPING: DINGLE 1955
 JW1501_MARK LOGO: CGS
 JW1501_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1501+STABILITY: SURFACE MOTION
 JW1501
 JW1501  HISTORY     - Date     Condition        Report By
 JW1501  HISTORY     - 1955     MONUMENTED       CGS
 JW1501  HISTORY     - 1966     MARK NOT FOUND   MDDT
 JW1501
 JW1501                          STATION DESCRIPTION
 JW1501
 JW1501'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1501'THE STATION IS ABOUT 2 MILES SOUTHWEST OF THE CENTER OF CUMBERLAND,
 JW1501'AND ON A LOW HILL JUST NORTH OF THE POTOMAC RIVER.  IT IS 16
 JW1501'FEET EAST OF THE NORTHWEST CORNER OF THE FENCE AROUND THE DINGLE
 JW1501'MUNICIPAL WATER TANK AND 5 FEET SOUTH OF A 4 IN X 4 IN WHITE
 JW1501'WITNESS POST.
 JW1501'
 JW1501'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 220
 JW1501'AND BALTIMORE STREET AT THE ALGONQUIN HOTEL IN CUMBERLAND, GO
 JW1501'SOUTH AND WEST ON HIGHWAY 220 FOR 1.1 MILES TO DINGLE CIRCLE AND
 JW1501'STOP LIGHT, TURN LEFT AND GO 0.05 MILE TO GEPHART STREET, TURN
 JW1501'RIGHT ON GEPHART STREET AND GO 0.35 MILE TO THE END OF THE
 JW1501'PAVEMENT, CONTINUE STRAIGHT AHEAD ON A GRAVELED ROAD FOR 0.15
 JW1501'MILE TO A FORK, TAKE THE LEFT ROAD AND GO 0.1 MILE TO THE
 JW1501'DINGLE MUNICIPAL WATER TANK AND THE STATION.
 JW1501'
 JW1501'TO REACH THE AZIMUTH MARK FROM DINGLE CIRCLE, GO SOUTHWEST ON
 JW1501'BRADDOCK STREET FOR 0.7 MILE TO THE MARK ON THE RIGHT AS DESCRIBED.
 JW1501'
 JW1501'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1501'STAMPED DINGLE 1955.
 JW1501'
 JW1501'REFERENCE MARK 1 IS 11 FEET EAST OF THE CENTER OF A TRACK
 JW1501'ROAD.  THE MARK PROJECTS 3 INCHES, AND THE DISK IS STAMPED DINGLE
 JW1501'NO 1 1955.
 JW1501'
 JW1501'REFERENCE MARK 2 IS 36 FEET SOUTHEAST OF THE NORTHEAST CORNER
 JW1501'OF THE FENCE.  THE MARK PROJECTS 4 INCHES, AND THE DISK IS STAMPED
 JW1501'DINGLE NO 2 1955.
 JW1501'
 JW1501'THE AZIMUTH MARK IS 50 FEET NORTH OF THE CENTER OF BRADDOCK
 JW1501'STREET AND 2 FEET EAST OF A 4 IN X 4 IN WHITE WITNESS POST.  THE
 JW1501'MARK PROJECTS 4 INCHES, AND THE DISK IS STAMPED DINGLE 1955.
 JW1501'
 JW1501'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JW1501
 JW1501                          STATION RECOVERY (1966)
 JW1501
 JW1501'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1966
 JW1501'THE AZIMUTH MARK WAS DESTROYED AND THE DISK RETURNED TO THE OFFICE
 JW1501'ON JANUARY 4, 1966.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0987 ***********************************************************************
 JV0987  DESIGNATION -  DISPOSE
 JV0987  PID         -  JV0987
 JV0987  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0987  COUNTRY     -  US
 JV0987  USGS QUAD   -  BELTSVILLE (2016)
 JV0987
 JV0987                         *CURRENT SURVEY CONTROL
 JV0987  ______________________________________________________________________
 JV0987* NAD 83(1991) POSITION- 39 00 28.61712(N) 076 53 35.59954(W)   ADJUSTED
 JV0987* NAVD 88 ORTHO HEIGHT -    35.242 (meters)      115.62  (feet) ADJUSTED
 JV0987  ______________________________________________________________________
 JV0987  GEOID HEIGHT    -        -32.217 (meters)                     GEOID18
 JV0987  LAPLACE CORR    -         -4.86  (seconds)                    DEFLEC18
 JV0987  DYNAMIC HEIGHT  -         35.223 (meters)      115.56  (feet) COMP
 JV0987  MODELED GRAVITY -    980,094.8   (mgal)                       NAVD 88
 JV0987
 JV0987  HORZ ORDER      -  SECOND
 JV0987  VERT ORDER      -  SECOND    CLASS 0
 JV0987
 JV0987.The horizontal coordinates were established by classical geodetic methods
 JV0987.and adjusted by the National Geodetic Survey in January 1992.
 JV0987
 JV0987.The orthometric height was determined by differential leveling and
 JV0987.adjusted by the NATIONAL GEODETIC SURVEY
 JV0987.in June 1991.
 JV0987
 JV0987.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0987.GEOID18 height accuracy estimate available here.
 JV0987
 JV0987.Click photographs - Photos may exist for this station.
 JV0987
 JV0987.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0987
 JV0987.The dynamic height is computed by dividing the NAVD 88
 JV0987.geopotential number by the normal gravity value computed on the
 JV0987.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0987.degrees latitude (g = 980.6199 gals.).
 JV0987
 JV0987.The modeled gravity was interpolated from observed gravity values.
 JV0987
 JV0987. The following values were computed from the NAD 83(1991) position.
 JV0987
 JV0987;                    North         East     Units Scale Factor Converg.
 JV0987;SPC MD       -   148,894.060   409,248.309   MT  0.99995250   +0 04 01.3
 JV0987;SPC MD       -   488,496.60  1,342,675.49   sFT  0.99995250   +0 04 01.3
 JV0987;UTM  18      - 4,319,363.734   336,074.661   MT  0.99993089   -1 11 30.9
 JV0987
 JV0987!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0987!SPC MD       -   0.99999953  x   0.99995250  =   0.99995203
 JV0987!UTM  18      -   0.99999953  x   0.99993089  =   0.99993042
 JV0987
 JV0987_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3607419363(NAD 83)
 JV0987
 JV0987                          SUPERSEDED SURVEY CONTROL
 JV0987
 JV0987  NAD 83(1986)-  39 00 28.61567(N)    076 53 35.61027(W) AD(       ) 2
 JV0987  NAD 27      -  39 00 28.21833(N)    076 53 36.70651(W) AD(       ) 2
 JV0987  NGVD 29              35.47   (m)          116.4    (f) LEVELING    3  
 JV0987  NGVD 29 (11/26/84)   35.473  (m)          116.38   (f) ADJUSTED    2 0
 JV0987
 JV0987.Superseded values are not recommended for survey control.
 JV0987
 JV0987.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0987.See file dsdata.pdf to determine how the superseded data were derived.
 JV0987
 JV0987_MARKER: DE = TRAVERSE STATION DISK
 JV0987_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0987_STAMPING: DISPOSE 1958
 JV0987_MARK LOGO: CGS
 JV0987_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0987+STABILITY: SURFACE MOTION
 JV0987
 JV0987  HISTORY     - Date     Condition        Report By
 JV0987  HISTORY     - 1958     MONUMENTED       CGS
 JV0987  HISTORY     - 1958     GOOD             CGS
 JV0987  HISTORY     - 19910629 MARK NOT FOUND   USPSQD
 JV0987
 JV0987                          STATION DESCRIPTION
 JV0987
 JV0987'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0987'THIS IS AN UNOCCUPIED TRAVERSE STATION AND IS THE AZIMUTH MARK
 JV0987'FOR TRIANGULATION STATION DOMOKE.
 JV0987'
 JV0987'STATION IS LOCATED ABOUT 11.0 MILES NORTHEAST OF THE CENTER
 JV0987'OF WASHINGTON D.C., 2 MILES NORTHEAST OF COLLEGE PARK, 2 MILES
 JV0987'SOUTHEAST OF BELTSVILLE, AND AT THE WEST EDGE OF THE CITY OF
 JV0987'GREENBELT.  STATION IS 10 FEET WEST OF THE WEST SIDE OF PISTOL
 JV0987'RANGE, 5 FEET NORTH OF WHITE WITNESS POST.  THE MARK PROJECTS 4
 JV0987'INCHES AND THE DISK IS STAMPED, DISPOSE 1958.
 JV0987'
 JV0987'TO REACH FROM A POINT ON U.S. HIGHWAY NO. 1, OPPOSITE THE
 JV0987'RAILROAD STATION IN BELTSVILLE.  GO SOUTH FOR 0.1 MILE, HERE
 JV0987'TURN LEFT OVER BRIDGE AND GO EAST FOR 0.5 MILE TO FORK, KEEP
 JV0987'RIGHT AND GO SOUTH FOR 2.0 MILES A DIAGONALLY CROSS ROADS, TURN
 JV0987'RIGHT AND GO 0.05 MILE TO A CROSS ROADS (BETWEEN DISPOSAL PLANT
 JV0987'AND MAINTANCE BUILDING), CONTINUE STRAIGHT AHEAD NORTHERLY FOR
 JV0987'0.1 MILE TO PISTOL RANGE AND STATION ON WEST SIDE OF RANGE AS
 JV0987'DESCRIBED.
 JV0987'
 JV0987'DISTANCE TO DOMOKE IS 738.717 M.
 JV0987
 JV0987                          STATION RECOVERY (1958)
 JV0987
 JV0987'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV0987'1.3 MI SW FROM BELTSVILLE.
 JV0987'ABOUT 0.4 MILE SOUTHEAST ALONG STATE HIGHWAY 212 FROM THE
 JV0987'BALTIMORE AND OHIO RAILROAD OVERPASS AT BELTSVILLE, THENCE 1.8
 JV0987'MILES SOUTH-SOUTHWEST ALONG GREENBELT ROAD AND EDMONSTON AVENUE,
 JV0987'THENCE 0.1 MILE ALONG A DIRT ROAD, ABOUT 175 YARDS NORTHEAST OF A
 JV0987'LARGE SEWAGE DISPOSAL PLANT, NEAR THE NORTHEAST EDGE OF A
 JV0987'CLEARING FOR A PISTOL RANGE, 6 FEET NORTHEAST OF THE EDGE OF A
 JV0987'WOOD, 2 1/2 FEET SOUTHWEST OF A WHITE WOODEN WITNESS POST AND SET
 JV0987'IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE
 JV0987'GROUND.
 JV0987
 JV0987                          STATION RECOVERY (1991)
 JV0987
 JV0987'RECOVERY NOTE BY US POWER SQUADRON 1991 (WAY)
 JV0987'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7602 ***********************************************************************
 HV7602  DESIGNATION -  DISTRICT HTS RAD MAST
 HV7602  PID         -  HV7602
 HV7602  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7602  COUNTRY     -  US
 HV7602  USGS QUAD   -  ANACOSTIA (2016)
 HV7602
 HV7602                         *CURRENT SURVEY CONTROL
 HV7602  ______________________________________________________________________
 HV7602* NAD 83(1993) POSITION- 38 51 33.87172(N) 076 53 45.99469(W)   ADJUSTED
 HV7602  ______________________________________________________________________
 HV7602  GEOID HEIGHT    -        -32.407 (meters)                     GEOID18
 HV7602  LAPLACE CORR    -         -4.88  (seconds)                    DEFLEC18
 HV7602  HORZ ORDER      -  THIRD
 HV7602
 HV7602.The horizontal coordinates were established by classical geodetic methods
 HV7602.and adjusted by the National Geodetic Survey in November 1994.
 HV7602
 HV7602.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7602.GEOID18 height accuracy estimate available here.
 HV7602
 HV7602.Click photographs - Photos may exist for this station.
 HV7602
 HV7602.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7602
 HV7602. The following values were computed from the NAD 83(1993) position.
 HV7602
 HV7602;                    North         East     Units Scale Factor Converg.
 HV7602;SPC MD       -   132,404.501   409,016.978   MT  0.99994989   +0 03 54.7
 HV7602;SPC MD       -   434,397.10  1,341,916.54   sFT  0.99994989   +0 03 54.7
 HV7602;UTM  18      - 4,302,883.524   335,481.658   MT  0.99993330   -1 11 23.7
 HV7602
 HV7602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3548102883(NAD 83)
 HV7602
 HV7602                          SUPERSEDED SURVEY CONTROL
 HV7602
 HV7602  NAD 83(1991)-  38 51 33.87085(N)    076 53 45.99528(W) AD(       ) 3
 HV7602  NAD 83(1986)-  38 51 33.86938(N)    076 53 46.00749(W) AD(       ) 3
 HV7602  NAD 27      -  38 51 33.46512(N)    076 53 47.10390(W) AD(       ) 3
 HV7602
 HV7602.Superseded values are not recommended for survey control.
 HV7602
 HV7602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7602.See file dsdata.pdf to determine how the superseded data were derived.
 HV7602
 HV7602_MARKER: 42 = RADIO/TV MAST
 HV7602
 HV7602  HISTORY     - Date     Condition        Report By
 HV7602  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7602
 HV7602                          STATION DESCRIPTION
 HV7602
 HV7602'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7602'THE STATION IS THE RED LIGHT MOUNTED AT THE TOP OF THE DISTRICT
 HV7602'HEIGHTS RADIO STATION KQI 672 MAST, LOCATED IN BACK OF 7320
 HV7602'DISTRICT HEIGHTS PARKWAY AND ON THE GROUNDS OF THE DISTRICT HEIGHTS
 HV7602'ELEMENTARY SCHOOL.  IT IS ABOUT 200 FEET ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4754 ***********************************************************************
 JV4754  DESIGNATION -  DITTO
 JV4754  PID         -  JV4754
 JV4754  STATE/COUNTY-  MD/WASHINGTON
 JV4754  COUNTRY     -  US
 JV4754  USGS QUAD   -  CLEAR SPRING (2016)
 JV4754
 JV4754                         *CURRENT SURVEY CONTROL
 JV4754  ______________________________________________________________________
 JV4754* NAD 83(1991) POSITION- 39 43 19.31659(N) 077 52 52.04716(W)   ADJUSTED
 JV4754* NAVD 88 ORTHO HEIGHT -   176.    (meters)      577.    (feet) SCALED
 JV4754  ______________________________________________________________________
 JV4754  GEOID HEIGHT    -        -34.305 (meters)                     GEOID18
 JV4754  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC18
 JV4754  HORZ ORDER      -  SECOND
 JV4754
 JV4754.The horizontal coordinates were established by classical geodetic methods
 JV4754.and adjusted by the National Geodetic Survey in January 1992.
 JV4754
 JV4754.The orthometric height was scaled from a topographic map.
 JV4754
 JV4754.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4754.GEOID18 height accuracy estimate available here.
 JV4754
 JV4754.Click photographs - Photos may exist for this station.
 JV4754
 JV4754.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4754
 JV4754. The following values were computed from the NAD 83(1991) position.
 JV4754
 JV4754;                    North         East     Units Scale Factor Converg.
 JV4754;SPC MD       -   228,531.956   324,449.923   MT  1.00005892   -0 33 10.9
 JV4754;SPC MD       -   749,775.26  1,064,466.12   sFT  1.00005892   -0 33 10.9
 JV4754;SPC PA S     -    43,167.767   588,757.085   MT  1.00003976   -0 05 06.3
 JV4754;SPC PA S     -   141,626.25  1,931,613.87   sFT  1.00003976   -0 05 06.3
 JV4754;SPC WV N     -   136,917.557   738,785.415   MT  0.99994214   +1 01 56.9
 JV4754;SPC WV N     -   449,203.68  2,423,831.82   sFT  0.99994214   +1 01 56.9
 JV4754;UTM  18      - 4,400,875.958   253,054.529   MT  1.00035084   -1 50 31.7
 JV4754
 JV4754!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4754!SPC MD       -   0.99997780  x   1.00005892  =   1.00003672
 JV4754!SPC PA S     -   0.99997780  x   1.00003976  =   1.00001756
 JV4754!SPC WV N     -   0.99997780  x   0.99994214  =   0.99991994
 JV4754!UTM  18      -   0.99997780  x   1.00035084  =   1.00032863
 JV4754
 JV4754:                Primary Azimuth Mark                     Grid Az
 JV4754:SPC MD       -  DITTO AZ MK                              105 32 45.9
 JV4754:SPC PA S     -  DITTO AZ MK                              105 04 41.3
 JV4754:SPC WV N     -  DITTO AZ MK                              103 57 38.1
 JV4754:UTM  18      -  DITTO AZ MK                              106 50 06.7
 JV4754
 JV4754_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STK5305400875(NAD 83)
 JV4754
 JV4754|---------------------------------------------------------------------|
 JV4754| PID    Reference Object                     Distance      Geod. Az  |
 JV4754|                                                           dddmmss.s |
 JV4754| CJ9669 DITTO AZ MK                                        1045935.0 |
 JV4754|---------------------------------------------------------------------|
 JV4754
 JV4754                          SUPERSEDED SURVEY CONTROL
 JV4754
 JV4754  NAD 83(1986)-  39 43 19.31466(N)    077 52 52.05664(W) AD(       ) 2
 JV4754  NAD 27      -  39 43 18.97700(N)    077 52 53.06600(W) AD(       ) 2
 JV4754
 JV4754.Superseded values are not recommended for survey control.
 JV4754
 JV4754.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4754.See file dsdata.pdf to determine how the superseded data were derived.
 JV4754
 JV4754_MARKER: DS = TRIANGULATION STATION DISK
 JV4754_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4754_STAMPING: DITTO 1935
 JV4754_MARK LOGO: CGS
 JV4754_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4754+STABILITY: SURFACE MOTION
 JV4754
 JV4754  HISTORY     - Date     Condition        Report By
 JV4754  HISTORY     - 1935     MONUMENTED       CGS
 JV4754
 JV4754                          STATION DESCRIPTION
 JV4754
 JV4754'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JB)
 JV4754'STATION IS LOCATED ABOUT 9 MILES NW FROM HAGERSTOWN, MD., AND 3
 JV4754'MILES SW FROM THE VILLAGE OF WELCH RUN, PA. ON THE
 JV4754'MARYLAND-PENNSYLVANIA STATE LINE.  IT IS BOUNDED ON THE E BY THE
 JV4754'PROPERTY OF MR. O.J. DITTO AND ON THE W BY THAT OF
 JV4754'MR. WHETSTONE.  BOTH PROPERTIES ARE UNDER CULTIVATION.
 JV4754'
 JV4754'THE STATION MARK IS A STANDARD BRONZE DISK SET IN THE TOP OF A
 JV4754'12- BY 12-INCH CONCRETE POST, 18 INCHES ABOVE THE SURFACE.  THIS
 JV4754'MONUMENT IS THE FIFTH MONUMENT W OF CONOCOCHEAGUE CREEK MARKING
 JV4754'THE STATE BOUNDARY.
 JV4754'
 JV4754'NO REFERENCE MARKS.
 JV4754'
 JV4754'THE AZIMUTH MARK, LOCATED ABOUT 0.3 MILE E FROM THE STATION.  IT
 JV4754'IS A STANDARD BRONZE DISK IN A BOULDER NEAR THE NE CORNER OF
 JV4754'WHEAT FIELD.  IT IS ON THE PROPERTY OF MR. DITTO, 11 PACES W FROM
 JV4754'THE CENTER LINE OF A DIRT ROAD, AND 24 PACES S FROM THE S SIDE
 JV4754'OF A TOOL SHED.
 JV4754'
 JV4754'TO REACH GO TO DRY RUN CORNERS MD. BY PAVED ROAD E FROM FAIRVIEW
 JV4754'OR PAVED ROAD S FROM CALICK AND MERCERSBURG.  FROM DRY RUN
 JV4754'CORNERS TAKE THE MIDDLE OF THREE ROADS (DIRT ROAD) GO NE FOR 0.7
 JV4754'MILE TO STATE LINE AND HOME OF MR. DITTO.  FROM MR. DITTOS HOUSE
 JV4754'GO 0.3 MILE W THROUGH A CULTIVATED FIELD TO HIGH RIDGE AND STATE
 JV4754'LINE.
 JV4754'
 JV4754'A 37-FOOT TOWER USED FOR 1935 OBSERVATIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5810 ***********************************************************************
 HV5810  DESIGNATION -  DIVIDE
 HV5810  PID         -  HV5810
 HV5810  STATE/COUNTY-  MD/QUEEN ANNES
 HV5810  COUNTRY     -  US
 HV5810  USGS QUAD   -  QUEENSTOWN (2016)
 HV5810
 HV5810                         *CURRENT SURVEY CONTROL
 HV5810  ______________________________________________________________________
 HV5810* NAD 83(1991) POSITION- 38 52 58.91319(N) 076 09 11.09389(W)   ADJUSTED
 HV5810* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5810  ______________________________________________________________________
 HV5810  GEOID HEIGHT    -        -34.245 (meters)                     GEOID18
 HV5810  LAPLACE CORR    -         -4.26  (seconds)                    DEFLEC18
 HV5810  HORZ ORDER      -  THIRD
 HV5810
 HV5810.The horizontal coordinates were established by classical geodetic methods
 HV5810.and adjusted by the National Geodetic Survey in January 1992.
 HV5810
 HV5810.The orthometric height was scaled from a topographic map.
 HV5810
 HV5810.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5810.GEOID18 height accuracy estimate available here.
 HV5810
 HV5810.Click photographs - Photos may exist for this station.
 HV5810
 HV5810.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5810
 HV5810. The following values were computed from the NAD 83(1991) position.
 HV5810
 HV5810;                    North         East     Units Scale Factor Converg.
 HV5810;SPC MD       -   135,362.518   473,481.393   MT  0.99994986   +0 31 53.6
 HV5810;SPC MD       -   444,101.86  1,553,413.54   sFT  0.99994986   +0 31 53.6
 HV5810;UTM  18      - 4,304,428.375   399,987.007   MT  0.99972317   -0 43 26.0
 HV5810
 HV5810!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5810!SPC MD       -   1.00000525  x   0.99994986  =   0.99995511
 HV5810!UTM  18      -   1.00000525  x   0.99972317  =   0.99972842
 HV5810
 HV5810:                Primary Azimuth Mark                     Grid Az
 HV5810:SPC MD       -  QUARTER                                  166 10 15.3
 HV5810:UTM  18      -  QUARTER                                  167 25 34.9
 HV5810
 HV5810_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9998704428(NAD 83)
 HV5810
 HV5810|---------------------------------------------------------------------|
 HV5810| PID    Reference Object                     Distance      Geod. Az  |
 HV5810|                                                           dddmmss.s |
 HV5810| HV5772 PRINCESS                            279.920 METERS 05304     |
 HV5810| HV5808 DECK                                362.340 METERS 11528     |
 HV5810| HV5758 QUARTER                             451.424 METERS 1664208.9 |
 HV5810|---------------------------------------------------------------------|
 HV5810
 HV5810                          SUPERSEDED SURVEY CONTROL
 HV5810
 HV5810  NAD 83(1986)-  38 52 58.90862(N)    076 09 11.10692(W) AD(       ) 3
 HV5810  NAD 27      -  38 52 58.46700(N)    076 09 12.28900(W) AD(       ) 3
 HV5810  USSD        -  38 52 58.86200(N)    076 09 12.06000(W) AD(       ) 3
 HV5810
 HV5810.Superseded values are not recommended for survey control.
 HV5810
 HV5810.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5810.See file dsdata.pdf to determine how the superseded data were derived.
 HV5810
 HV5810_MARKER: Z = SEE DESCRIPTION
 HV5810_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5810_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5810+STABILITY: SURFACE MOTION
 HV5810
 HV5810  HISTORY     - Date     Condition        Report By
 HV5810  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5810  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5810
 HV5810                          STATION DESCRIPTION
 HV5810
 HV5810'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5810'STATION IS ON WYE ISLAND, ON THE NORTHERN SHORE OF THE BRANCH OF
 HV5810'WYE RIVER BOUNDING WYE ISLAND ON THE S, ON POINT AT EASTERN SIDE
 HV5810'OF ENTRANCE TO DIVIDING CREEK, IN POINT OF WOODS, ABOUT 4 FEET
 HV5810'ABOVE HIGH WATER, 2 YARDS WNW OF EDGE OF BANK, 8 YARDS ENE OF
 HV5810'EDGE OF BANK, AND 11 YARDS NNE OF POINT OF BANK.  STATION IS
 HV5810'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5810'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5810'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV5810'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUBSURFACE MARK IS
 HV5810'CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW
 HV5810'THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV5810'POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY OF HOUSE, 7/8 MILE, S
 HV5810'14 DEG 57 MIN W.  BALDWIN WINDMILL, 1 MILE, S 35 DEG 22 MIN W.
 HV5810'RIGHT CHIMNEY OF HOUSE, 2 MILES, S 62 DEG 17 MIN W.  PEAK OF HOUSE
 HV5810'BETWEEN TWO CHIMNEYS, 2-5/8 MILES, S 68 DEG 44 MIN W.  NAIL IN
 HV5810'BLAZE IN 14-INCH OAK TREE, 4.05 METERS (13.29 FEET), N 74 DEG 26
 HV5810'MIN W.  NAIL IN BLAZE IN 8-INCH GNARLED OAK TREE, 9.98 METERS
 HV5810'(32.74 FEET), N 26 DEG 31 MIN W.  NAIL IN BLAZE IN 30-INCH OAK
 HV5810'TREE, 8.41 METERS (27.59 FEET), N 9 DEG 43 MIN E.  RIGHT TANGENT
 HV5810'OF OLD WHARF, 1/4 MILE, N 65 DEG 48 MIN E.  NEAR PEAK OF LARGE
 HV5810'BARN, 1-3/4 MILES, S 76 DEG 32 MIN E.
 HV5810
 HV5810                          STATION RECOVERY (1940)
 HV5810
 HV5810'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5810'STATION MARK SEARCHED FOR BUT NOT FOUND.  30-INCH OAK TREE FOUND,
 HV5810'BUT HAD NO REFERENCE BLAZE.  OTHER REFERENCE TREES NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6265 ***********************************************************************
 HV6265  DESIGNATION -  DIXON
 HV6265  PID         -  HV6265
 HV6265  STATE/COUNTY-  MD/TALBOT
 HV6265  COUNTRY     -  US
 HV6265  USGS QUAD   -  CLAIBORNE (2016)
 HV6265
 HV6265                         *CURRENT SURVEY CONTROL
 HV6265  ______________________________________________________________________
 HV6265* NAD 83(1991) POSITION- 38 51 20.11250(N) 076 15 40.79102(W)   ADJUSTED
 HV6265* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6265  ______________________________________________________________________
 HV6265  GEOID HEIGHT    -        -34.062 (meters)                     GEOID18
 HV6265  LAPLACE CORR    -         -4.99  (seconds)                    DEFLEC18
 HV6265  HORZ ORDER      -  THIRD
 HV6265
 HV6265.The horizontal coordinates were established by classical geodetic methods
 HV6265.and adjusted by the National Geodetic Survey in January 1992.
 HV6265
 HV6265.The orthometric height was scaled from a topographic map.
 HV6265
 HV6265.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6265.GEOID18 height accuracy estimate available here.
 HV6265
 HV6265.Click photographs - Photos may exist for this station.
 HV6265
 HV6265.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6265
 HV6265. The following values were computed from the NAD 83(1991) position.
 HV6265
 HV6265;                    North         East     Units Scale Factor Converg.
 HV6265;SPC MD       -   132,234.494   464,114.211   MT  0.99994991   +0 27 49.0
 HV6265;SPC MD       -   433,839.34  1,522,681.37   sFT  0.99994991   +0 27 49.0
 HV6265;UTM  18      - 4,301,506.927   390,555.575   MT  0.99974750   -0 47 29.0
 HV6265
 HV6265!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6265!SPC MD       -   1.00000538  x   0.99994991  =   0.99995529
 HV6265!UTM  18      -   1.00000538  x   0.99974750  =   0.99975288
 HV6265
 HV6265:                Primary Azimuth Mark                     Grid Az
 HV6265:SPC MD       -  LEGG                                     282 42 46.5
 HV6265:UTM  18      -  LEGG                                     283 58 04.5
 HV6265
 HV6265_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9055501506(NAD 83)
 HV6265
 HV6265|---------------------------------------------------------------------|
 HV6265| PID    Reference Object                     Distance      Geod. Az  |
 HV6265|                                                           dddmmss.s |
 HV6265| HV6253 LEGG                                APPROX. 6.1 KM 2831035.5 |
 HV6265|---------------------------------------------------------------------|
 HV6265
 HV6265                          SUPERSEDED SURVEY CONTROL
 HV6265
 HV6265  NAD 83(1986)-  38 51 20.10841(N)    076 15 40.80416(W) AD(       ) 3
 HV6265  NAD 27      -  38 51 19.67400(N)    076 15 42.00100(W) AD(       ) 3
 HV6265  USSD        -  38 51 20.06100(N)    076 15 41.78600(W) AD(       ) 3
 HV6265
 HV6265.Superseded values are not recommended for survey control.
 HV6265
 HV6265.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6265.See file dsdata.pdf to determine how the superseded data were derived.
 HV6265
 HV6265
 HV6265  HISTORY     - Date     Condition        Report By
 HV6265  HISTORY     - 1899     MONUMENTED       CGS
 HV6265  HISTORY     - 1909     GOOD             CGS
 HV6265  HISTORY     - 1941     SEE DESCRIPTION  CGS
 HV6265
 HV6265                          STATION DESCRIPTION
 HV6265
 HV6265'DESCRIBED BY COAST AND GEODETIC SURVEY 1909
 HV6265'STATION IS ON THE SOUTHEASTERN SIDE OF EASTERN BAY, ON TILGHMANS
 HV6265'POINT, HALFWAY BETWEEN EASTERN BAY AND MILES RIVER, 3/4 MILE SW
 HV6265'OF NORTHERN END OF POINT, AND 1-5/8 MILES NE OF CLAIBORNE
 HV6265'WHARF.  STATION IS CENTER OF UPRIGHT STAFF, 3 INCHES SQUARE, SET
 HV6265'IN CENTER OF TRAPDOOR AT APEX OF SQUARE ROOF OF TWO-STORY SQUARE
 HV6265'FRAME HOUSE ON TILGHMANS POINT FARM.
 HV6265
 HV6265                          STATION RECOVERY (1941)
 HV6265
 HV6265'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (DHB)
 HV6265'NO REPORT ON TRIANGULATION STATION DIXON WAS MADE BY FIELD
 HV6265'INSPECTION PARTY WORKING ON PHOTO SURVEY T-5708.
 HV6265'
 HV6265'IN COURSE OF REVIEWING SHEET IN WASHINGTON OFFICE, IT WAS
 HV6265'FOUND THAT STATION PLOTS IN CENTER OF A BUILDING RADIAL, PLOTTED
 HV6265'ON T-5708.  EXAMINATION OF PHOTOGRAPHS UNDER THE STEREOSCOPE,
 HV6265'DISCLOSED THAT THE BUILDING FITTED THE DESCRIPTION OF THE ONE
 HV6265'ON WHICH TRIANGULATION STATION DIXON IS LOCATED.  IN ABSENCE OF
 HV6265'ANY REPORT TO THE CONTRARY IT IS ASSUMED TO BE THE SAME
 HV6265'BUILDING, AND TRIANGULATION STATION DIXON IS THEREFORE SHOWN ON
 HV6265'T-5708.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6769 ***********************************************************************
 HV6769  DESIGNATION -  DIXON
 HV6769  PID         -  HV6769
 HV6769  STATE/COUNTY-  MD/ST MARYS
 HV6769  COUNTRY     -  US
 HV6769  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6769
 HV6769                         *CURRENT SURVEY CONTROL
 HV6769  ______________________________________________________________________
 HV6769* NAD 83(1993) POSITION- 38 24 42.64549(N) 076 36 21.80555(W)   ADJUSTED
 HV6769* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 HV6769  ______________________________________________________________________
 HV6769  GEOID HEIGHT    -        -33.919 (meters)                     GEOID18
 HV6769  LAPLACE CORR    -         -5.39  (seconds)                    DEFLEC18
 HV6769  HORZ ORDER      -  SECOND
 HV6769
 HV6769.The horizontal coordinates were established by classical geodetic methods
 HV6769.and adjusted by the National Geodetic Survey in November 1994.
 HV6769
 HV6769.The orthometric height was scaled from a topographic map.
 HV6769
 HV6769.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6769.GEOID18 height accuracy estimate available here.
 HV6769
 HV6769.Click photographs - Photos may exist for this station.
 HV6769
 HV6769.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6769
 HV6769. The following values were computed from the NAD 83(1993) position.
 HV6769
 HV6769;                    North         East     Units Scale Factor Converg.
 HV6769;SPC MD       -    82,792.242   434,405.861   MT  0.99998243   +0 14 50.1
 HV6769;SPC MD       -   271,627.55  1,425,213.23   sFT  0.99998243   +0 14 50.1
 HV6769;UTM  18      - 4,252,732.998   359,780.485   MT  0.99984214   -0 59 52.9
 HV6769
 HV6769!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6769!SPC MD       -   1.00000411  x   0.99998243  =   0.99998654
 HV6769!UTM  18      -   1.00000411  x   0.99984214  =   0.99984625
 HV6769
 HV6769:                Primary Azimuth Mark                     Grid Az
 HV6769:SPC MD       -  DIXON RM 2                               146 52 30.9
 HV6769:UTM  18      -  DIXON RM 2                               148 07 13.9
 HV6769
 HV6769_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5978052732(NAD 83)
 HV6769
 HV6769|---------------------------------------------------------------------|
 HV6769| PID    Reference Object                     Distance      Geod. Az  |
 HV6769|                                                           dddmmss.s |
 HV6769| HV6767 BROOME ISLAND LIGHTHOUSE            APPROX. 4.7 KM 1081030.1 |
 HV6769| CX2694 DIXON RM 1                           25.390 METERS 12247     |
 HV6769| CX2695 DIXON RM 2                                         1470721.0 |
 HV6769| CX2696 DIXON RM 3                           41.267 METERS 16304     |
 HV6769|---------------------------------------------------------------------|
 HV6769
 HV6769                          SUPERSEDED SURVEY CONTROL
 HV6769
 HV6769  NAD 83(1991)-  38 24 42.64552(N)    076 36 21.80654(W) AD(       ) 2
 HV6769  NAD 83(1986)-  38 24 42.64508(N)    076 36 21.82021(W) AD(       ) 2
 HV6769  NAD 27      -  38 24 42.19600(N)    076 36 22.97200(W) AD(       ) 2
 HV6769
 HV6769.Superseded values are not recommended for survey control.
 HV6769
 HV6769.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6769.See file dsdata.pdf to determine how the superseded data were derived.
 HV6769
 HV6769_MARKER: DS = TRIANGULATION STATION DISK
 HV6769_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6769_STAMPING: DIXON 1934
 HV6769_MARK LOGO: CGS
 HV6769_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6769+STABILITY: SURFACE MOTION
 HV6769
 HV6769  HISTORY     - Date     Condition        Report By
 HV6769  HISTORY     - 1934     MONUMENTED       CGS
 HV6769  HISTORY     - 1943     GOOD             CGS
 HV6769  HISTORY     - 1960     GOOD             CGS
 HV6769  HISTORY     - 1982     MARK NOT FOUND   MDDNR
 HV6769
 HV6769                          STATION DESCRIPTION
 HV6769
 HV6769'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6769'STATION IS LOCATED 6 MILES NW OF LEONARDTOWN, 400 YARDS S OF
 HV6769'FOREST WHARF, 4 FEET SW OF A FENCE DIVIDING THE PROPERTY OF MR.
 HV6769'DIXON AND MR. PLUGGE, 100 FEET SE OF THE SE CORNER OF A LARGE
 HV6769'WHITE HOUSE, 100 FEET N OF THE CENTER LINE OF A LANE LEADING TO
 HV6769'MR. DIXONS HOUSE AND 15 FEET E OF A 20-INCH MULBERRY TREE.  MARK
 HV6769'PROJECTS ABOUT 5 INCHES.
 HV6769'
 HV6769'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 HV6769'DISKS SET IN CONCRETE.
 HV6769'
 HV6769'REFERENCE MARK 1 IS S OF THE STATION, 15 FEET N OF THE LANE, 3
 HV6769'FEET N OF THE TOP OF THE BANK, AND 30 PACES W OF DIRT ROAD.  MARK
 HV6769'PROJECTS ABOUT 5 INCHES.
 HV6769'
 HV6769'REFERENCE MARK 2 (AZIMUTH MARK) IS S OF THE STATION, 3 FEET N OF
 HV6769'THE NE CORNER OF A LARGE UNPAINTED TOBACCO BARN OWNED BY MR. S.M.
 HV6769'JONES.  TO REACH MARK FROM THE STATION GO 0.7 MILE SW FROM
 HV6769'INTERSECTION OF LANE AND MAIN ROAD PAST MR. DIXONS HOUSE.
 HV6769'
 HV6769'REFERENCE MARK 3 IS SW OF THE STATION, 15 FEET N OF THE LANE, AND
 HV6769'3 FEET NE OF A 23-INCH BLACK LOCUST TREE.  MARK PROJECTS ABOUT 4
 HV6769'INCHES.
 HV6769'
 HV6769'TO REACH STATION FROM LEONARDTOWN, GO NE TO HOLLYWOOD, 6 MILES,
 HV6769'TURN LEFT ON PAVED ROAD, GO 5.2 MILES TO ORAVILLE AND A T-ROAD,
 HV6769'TURN RIGHT, GO 2.6 MILES TO FOREST WHARF AT THE END OF THE
 HV6769'PAVEMENT, FOLLOW MAIN DIRT ROAD TO THE RIGHT ALONG THE RIVER FOR
 HV6769'0.15 MILE OR JUST S OF THE LARGE WHITE HOUSE, TURN RIGHT INTO LANE
 HV6769'LEADING INTO MR. DIXONS HOUSE.  STATION IS ON THE EXTREME SE
 HV6769'POINT OF THE RIDGE ON THE N OF THE LANE LEADING INTO MR. DIXONS HOUSE.
 HV6769'
 HV6769'A 4-FOOT STAND WAS USED AND CLEARED ALL LINES.  THE LINE TO
 HV6769'BRISCO IS OBSTRUCTED BY ONE LIMB, IT WAS PULLED DOWN AND TIED SO
 HV6769'THE LINE COULD BE OBSERVED.  ANY LINE UP THE RIVER WILL HAVE TO GO
 HV6769'OVER THE LARGE WHITE HOUSE.  IT WILL REQUIRE A 30-FOOT TOWER TO
 HV6769'CLEAR THE TOP OF THE HOUSE.
 HV6769'
 HV6769'HEIGHT OF LIGHT ABOVE STATION MARK 3 METERS.
 HV6769
 HV6769                          STATION RECOVERY (1943)
 HV6769
 HV6769'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6769'STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.  THE
 HV6769'DISTANCES TO REFERENCE MARKS NOS. 1 AND 3 WERE REMEASURED AND WERE
 HV6769'FOUND TO BE CORRECT.  THE ORIGINAL DESCRIPTION IS ADEQUATE AND
 HV6769'CORRECT WITH THE FOLLOWING EXCEPTIONS--
 HV6769'
 HV6769'FOREST WHARF IS NOW KNOWN AS SANDGATES, MARYLAND.
 HV6769'
 HV6769'THE BARN BY WHICH REFERENCE MARK 2 (AZIMUTH MARK) WAS PLACED HAS
 HV6769'BEEN EXTENDED AND THE MARK IS NOW WITHIN THE BARN.  MR. S.M.
 HV6769'JONES, THE OWNER, HAS PROVIDED A SMALL DOOR WHICH CAN BE OPENED,
 HV6769'MAKING THE MARK VISIBLE FROM THE STATION.
 HV6769
 HV6769                          STATION RECOVERY (1960)
 HV6769
 HV6769'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6769'STATION MARK, REFERENCE MARKS AND AZIMUTH MARK RECOVERED IN GOOD
 HV6769'CONDITION.  THE PUBLISHED DESCRIPTION IS INADEQUATE.  A NEW
 HV6769'DESCRIPTION FOLLOWS--
 HV6769'
 HV6769'STATION IS LOCATED ON THE SW SHORE OF THE PATUXENT RIVER AT
 HV6769'SANDGATES ON A HIGH BANK BETWEEN THE MACADAM ROAD AND THE RIVER.
 HV6769'100 FT. SE OF THE SE CORNER OF A LARGE WHITE HOUSE (MR. PLUGGES),
 HV6769'42 FT. NE OF THE CENTERLINE OF MACADAM ROAD, 4 FT. SE OF A WIRE
 HV6769'FENCE AND ABOUT 8 FT. HIGHER THAN THE ROAD ELEVATION.
 HV6769'
 HV6769'STATION SURFACE MARK IS A STANDARD TRIANGULATION STATION DISK
 HV6769'STAMPED DIXON 1934 SET IN THE TOP OF A 12 INCH SQUARE CONCRETE
 HV6769'MONUMENT AND PROJECTS 2 INCHES.
 HV6769'
 HV6769'REFERENCE MARK NO. 1 IS SE OF THE STATION 52 FT. NORTHEASTERLY OF
 HV6769'THE CENTERLINE OF THE ROAD, 25.3 FT. NE OF A POWER POLE WITH GUY
 HV6769'WIRE AND ABOUT 3 FT. W OF EDGE OF BANK ALONG THE WESTERLY SIDE OF
 HV6769'OLD LANE.  A STANDARD REFERENCE MARK DISK STAMPED DIXON NO.1 1934
 HV6769'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE MONUMENT PROJECTING 2
 HV6769'INCHES.
 HV6769'
 HV6769'REFERENCE MARK NO.3 IS S OF THE STATION AND ACROSS THE ROAD, 28.5
 HV6769'FT. SOUTHWEST OF THE CENTERLINE OF THE ROAD, 7.2 FT. S OF
 HV6769'TELEPHONE POLE NO. 63, 3 FT. NW OF LARGE BLACK LOCUST TREE AND ON
 HV6769'THE W SIDE OF THE DRIVEWAY LEADING TO MR. DIXONS HOUSE.  A
 HV6769'STANDARD REFERENCE MARK DISK STAMPED DIXON NO.3 1934 SET IN THE
 HV6769'TOP OF A 12 INCH SQUARE CONCRETE MONUMENT PROJECTING 2 INCHES.
 HV6769'
 HV6769'REFERENCE MARK NO.2 (AZ MK) IS ABOUT 2100 FT. SE OF THE STATION,
 HV6769'JUST INSIDE THE WEST WALL OF THE SOUTHWESTERLY OF TWO TOBACCO
 HV6769'BARNS OF MR. S.M. JONES.  A SMALL DOOR IN THE WESTERLY SIDE OF THE
 HV6769'BARN CAN BE OPENED TO REVEAL THE MARK.  AS NO ONE COULD BE
 HV6769'LOCATED TO GAIN ENTRANCE TO THE BARN THE STAMPING ON THE DISK WAS
 HV6769'NOT DETERMINED BY THE VISIT.
 HV6769'
 HV6769'TO REACH THE STATION FROM THE JUNCTION OF STATE ROUTE 245 AND 235
 HV6769'AT HOLLYWOOD, GO NORTHWEST ON ROUTE 235 FOR 2.9 MILES, TURN RIGHT
 HV6769'(NORTH) ON MACADAM ROAD AND FOLLOW 2.5 MILES TO THE STATION ON THE
 HV6769'RIGHT NEAR MR. PLUGGES HOUSE.
 HV6769
 HV6769                          STATION RECOVERY (1982)
 HV6769
 HV6769'RECOVERY NOTE BY MD DEPT OF NAT RES 1982 (LW)
 HV6769'DIXON 1934 - NOT FOUND - MEASUREMENTS FROM 1960 RECOVERY PLACE
 HV6769'THIS MARK IN AN AREA THAT HAS BEEN GRADED TO FORM A PARKING LOT
 HV6769'AT AN ELEVATION 8 FEET BELOW THAT WHERE THE STATION SHOULD BE.
 HV6769'THE AREA IS GROWN UP IN WEEDS AND 1/2 VINES, AND NEW TELEPHONE
 HV6769'POLES HAVE BEEN INSTALLED, PRECLUDING RECOVERY OF RM 1 AND 3.  AZ
 HV6769'MK NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6739 ***********************************************************************
 JV6739  DESIGNATION -  DIXON
 JV6739  PID         -  JV6739
 JV6739  STATE/COUNTY-  MD/HARFORD
 JV6739  COUNTRY     -  US
 JV6739  USGS QUAD   -  DELTA (2019)
 JV6739
 JV6739                         *CURRENT SURVEY CONTROL
 JV6739  ______________________________________________________________________
 JV6739* NAD 83(2011) POSITION- 39 43 16.23908(N) 076 15 38.70913(W)   ADJUSTED
 JV6739* NAD 83(2011) ELLIP HT-    71.582 (meters)        (06/27/12)   ADJUSTED
 JV6739* NAD 83(2011) EPOCH   -  2010.00
 JV6739* NAVD 88 ORTHO HEIGHT -   104.5   (meters)      343.    (feet) VERTCON3
 JV6739  ______________________________________________________________________
 JV6739  GEOID HEIGHT    -        -32.894 (meters)                     GEOID18
 JV6739  NAD 83(2011) X  -  1,166,761.233 (meters)                     COMP
 JV6739  NAD 83(2011) Y  - -4,772,038.399 (meters)                     COMP
 JV6739  NAD 83(2011) Z  -  4,054,267.631 (meters)                     COMP
 JV6739  LAPLACE CORR    -         -2.44  (seconds)                    DEFLEC18
 JV6739
 JV6739  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6739  Standards:
 JV6739         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6739            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6739  -------------------------------------------------------------------
 JV6739  NETWORK    2.21   4.92           0.99   0.70   2.51      0.53387733
 JV6739  -------------------------------------------------------------------
 JV6739  Click here for local accuracies and other accuracy information.
 JV6739
 JV6739.The horizontal coordinates were established by GPS observations
 JV6739.and adjusted by the National Geodetic Survey in June 2012.
 JV6739
 JV6739.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6739.been affixed to the stable North American tectonic plate. See 
 JV6739.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6739
 JV6739.The horizontal coordinates are valid at the epoch date displayed above
 JV6739.which is a decimal equivalence of Year/Month/Day.
 JV6739
 JV6739.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6739.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6739
 JV6739.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6739.GEOID18 height accuracy estimate available here.
 JV6739
 JV6739.Click photographs - Photos may exist for this station.
 JV6739
 JV6739.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6739
 JV6739.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6739
 JV6739.The ellipsoidal height was determined by GPS observations
 JV6739.and is referenced to NAD 83.
 JV6739
 JV6739. The following values were computed from the NAD 83(2011) position.
 JV6739
 JV6739;                    North         East     Units Scale Factor Converg.
 JV6739;SPC MD       -   228,329.074   463,386.225   MT  1.00005870   +0 27 50.3
 JV6739;SPC MD       -   749,109.64  1,520,292.97   sFT  1.00005870   +0 27 50.3
 JV6739;UTM  18      - 4,397,571.197   391,944.496   MT  0.99974375   -0 48 20.8
 JV6739
 JV6739!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6739!SPC MD       -   0.99998877  x   1.00005870  =   1.00004747
 JV6739!UTM  18      -   0.99998877  x   0.99974375  =   0.99973252
 JV6739
 JV6739:                Primary Azimuth Mark                     Grid Az
 JV6739:SPC MD       -  DIXON AZ MK                              256 34 15.1
 JV6739:UTM  18      -  DIXON AZ MK                              257 50 26.2
 JV6739
 JV6739_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9194497571(NAD 83)
 JV6739
 JV6739|---------------------------------------------------------------------|
 JV6739| PID    Reference Object                     Distance      Geod. Az  |
 JV6739|                                                           dddmmss.s |
 JV6739| JV6740 DIXON AZ MK                         APPROX. 0.5 KM 2570205.4 |
 JV6739|---------------------------------------------------------------------|
 JV6739
 JV6739                          SUPERSEDED SURVEY CONTROL
 JV6739
 JV6739  NAD 83(2007)-  39 43 16.23936(N)    076 15 38.70984(W) AD(2002.00) 0
 JV6739  ELLIP H (02/10/07)   71.606  (m)                       GP(2002.00)    
 JV6739  ELLIP H (09/18/02)   71.624  (m)                       GP(       ) 4 2
 JV6739  NAD 83(1991)-  39 43 16.23924(N)    076 15 38.70958(W) AD(       ) 1
 JV6739  ELLIP H (01/27/92)   71.626  (m)                       GP(       ) 4 1
 JV6739  NAD 83(1986)-  39 43 16.23224(N)    076 15 38.71560(W) AD(       ) 1
 JV6739  NGVD 29 (06/18/91)  104.8    (m)  UNKNOWN  model used  GPS OBS        
 JV6739
 JV6739.Superseded values are not recommended for survey control.
 JV6739
 JV6739.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6739.See file dsdata.pdf to determine how the superseded data were derived.
 JV6739
 JV6739_MARKER: DD = SURVEY DISK
 JV6739_SETTING: 66 = SET IN ROCK OUTCROP
 JV6739_MARK LOGO: MD-025
 JV6739_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6739_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6739+STABILITY: SURFACE MOTION
 JV6739_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6739+SATELLITE: SATELLITE OBSERVATIONS - October 01, 1989
 JV6739
 JV6739  HISTORY     - Date     Condition        Report By
 JV6739  HISTORY     - UNK      MONUMENTED       NONE
 JV6739  HISTORY     - 19891001 GOOD             RDA
 JV6739
 JV6739                          STATION DESCRIPTION
 JV6739
 JV6739'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6739'THE STATION IS LOCATED IN NORTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6739'2.0 MILES NORTH OF THE BROAD CREEK SCOUT RESERVE.
 JV6739'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 136 AND
 JV6739'STATE HIGHWAY 165 IN THE VILLAGE OF WHITEFORD PROCEED SOUTHEAST ALONG
 JV6739'HIGHWAY 136 1.6 MILES TO ITS INTERSECTION WITH DEEP RUN ROAD.  TURN
 JV6739'LEFT AND PROCEED NORTHEAST ALONG DEEP RUN ROAD 2.5 MILES TO ITS
 JV6739'INTERSECTION WITH STATE HIGHWAY 623.  TURN LEFT AND PROCEED NORTHWEST
 JV6739'ALONG HIGHWAY 623 0.55 MILES TO ITS INTERSECTION WITH NORTH COOPER
 JV6739'ROAD.  TURN RIGHT AND PROCEED NORTHEAST ALONG NORTH COOPER ROAD 0.8
 JV6739'MILE TO THE STATION ON THE LEFT IN A COW PASTURE.
 JV6739'THE STATION IS A DRILL HOLE IN THE CENTER OF MASON DIXON BOUNDARY LINE
 JV6739'MONUMENT ABOUT 1 FOOT ABOVE GROUND.  THE STATION IS 189.0 FEET NORTH
 JV6739'OF A BARBED WIRE FENCE LINE, 184.0 FEET NORTHWEST OF AN 5 INCH CEDAR
 JV6739'TREE JUST SOUTH OF A SPRING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6740 ***********************************************************************
 JV6740  DESIGNATION -  DIXON AZ MK
 JV6740  PID         -  JV6740
 JV6740  STATE/COUNTY-  MD/HARFORD
 JV6740  COUNTRY     -  US
 JV6740  USGS QUAD   -  DELTA (2019)
 JV6740
 JV6740                         *CURRENT SURVEY CONTROL
 JV6740  ______________________________________________________________________
 JV6740* NAD 83(2011) POSITION- 39 43 12.35316(N) 076 16 00.56248(W)   ADJUSTED
 JV6740* NAD 83(2011) ELLIP HT-    95.795 (meters)        (06/27/12)   ADJUSTED
 JV6740* NAD 83(2011) EPOCH   -  2010.00
 JV6740* NAVD 88 ORTHO HEIGHT -   128.7   (meters)      422.    (feet) VERTCON3
 JV6740  ______________________________________________________________________
 JV6740  GEOID HEIGHT    -        -32.886 (meters)                     GEOID18
 JV6740  NAD 83(2011) X  -  1,166,278.242 (meters)                     COMP
 JV6740  NAD 83(2011) Y  - -4,772,254.479 (meters)                     COMP
 JV6740  NAD 83(2011) Z  -  4,054,190.920 (meters)                     COMP
 JV6740  LAPLACE CORR    -         -2.24  (seconds)                    DEFLEC18
 JV6740
 JV6740  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6740  Standards:
 JV6740         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6740            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6740  -------------------------------------------------------------------
 JV6740  NETWORK    2.31   5.47           1.04   0.75   2.79      0.43909326
 JV6740  -------------------------------------------------------------------
 JV6740  Click here for local accuracies and other accuracy information.
 JV6740
 JV6740.The horizontal coordinates were established by GPS observations
 JV6740.and adjusted by the National Geodetic Survey in June 2012.
 JV6740
 JV6740.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6740.been affixed to the stable North American tectonic plate. See 
 JV6740.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6740
 JV6740.The horizontal coordinates are valid at the epoch date displayed above
 JV6740.which is a decimal equivalence of Year/Month/Day.
 JV6740
 JV6740.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6740.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6740
 JV6740.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6740.GEOID18 height accuracy estimate available here.
 JV6740
 JV6740.Click photographs - Photos may exist for this station.
 JV6740
 JV6740.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6740
 JV6740.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6740
 JV6740.The ellipsoidal height was determined by GPS observations
 JV6740.and is referenced to NAD 83.
 JV6740
 JV6740. The following values were computed from the NAD 83(2011) position.
 JV6740
 JV6740;                    North         East     Units Scale Factor Converg.
 JV6740;SPC MD       -   228,205.026   462,866.699   MT  1.00005842   +0 27 36.6
 JV6740;SPC MD       -   748,702.66  1,518,588.49   sFT  1.00005842   +0 27 36.6
 JV6740;UTM  18      - 4,397,458.727   391,422.512   MT  0.99974514   -0 48 34.7
 JV6740
 JV6740!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6740!SPC MD       -   0.99998497  x   1.00005842  =   1.00004339
 JV6740!UTM  18      -   0.99998497  x   0.99974514  =   0.99973012
 JV6740
 JV6740:                Primary Azimuth Mark                     Grid Az
 JV6740:SPC MD       -  DIXON                                    076 34 14.8
 JV6740:UTM  18      -  DIXON                                    077 50 26.1
 JV6740
 JV6740_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9142297458(NAD 83)
 JV6740
 JV6740|---------------------------------------------------------------------|
 JV6740| PID    Reference Object                     Distance      Geod. Az  |
 JV6740|                                                           dddmmss.s |
 JV6740| JV6739 DIXON                               APPROX. 0.5 KM 0770151.4 |
 JV6740|---------------------------------------------------------------------|
 JV6740
 JV6740                          SUPERSEDED SURVEY CONTROL
 JV6740
 JV6740  NAD 83(2007)-  39 43 12.35345(N)    076 16 00.56319(W) AD(2002.00) 0
 JV6740  ELLIP H (02/10/07)   95.818  (m)                       GP(2002.00)    
 JV6740  ELLIP H (09/18/02)   95.836  (m)                       GP(       ) 4 2
 JV6740  NAD 83(1991)-  39 43 12.35333(N)    076 16 00.56293(W) AD(       ) 1
 JV6740  ELLIP H (01/27/92)   95.838  (m)                       GP(       ) 4 1
 JV6740  NAD 83(1986)-  39 43 12.34631(N)    076 16 00.56895(W) AD(       ) 1
 JV6740  NGVD 29 (06/18/91)  129.0    (m)  UNKNOWN  model used  GPS OBS        
 JV6740
 JV6740.Superseded values are not recommended for survey control.
 JV6740
 JV6740.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6740.See file dsdata.pdf to determine how the superseded data were derived.
 JV6740
 JV6740_MARKER: DZ = AZIMUTH MARK DISK
 JV6740_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6740_STAMPING: 124 DIXON 1989
 JV6740_MARK LOGO: MD-025
 JV6740_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6740_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6740+STABILITY: SURFACE MOTION
 JV6740_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6740+SATELLITE: SATELLITE OBSERVATIONS - January 05, 1990
 JV6740
 JV6740  HISTORY     - Date     Condition        Report By
 JV6740  HISTORY     - 1989     MONUMENTED       RDA
 JV6740  HISTORY     - 19900105 GOOD
 JV6740
 JV6740                          STATION DESCRIPTION
 JV6740
 JV6740'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6740'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED WEST ALONG NORTH
 JV6740'COOPER ROAD 0.3 MILE TO THE MARK ON THE LEFT.
 JV6740'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6740'ABOUT 1 INCH BELOW GROUND STAMPED 124 DIXON 1989.  THE MARK IS 65.0
 JV6740'FEET WEST OF A 32 INCH LOCUST TREE, 12.0 FEET SOUTH OF THE CENTERLINE
 JV6740'OF NORTH COOPER ROAD, AND 34.7 FEET SOUTHWEST OF CONOWINGO POWER POLE
 JV6740'NUMBER 20513 AND 1752.31 FEET FROM THE STATION.
 JV6740
 JV6740                          STATION RECOVERY (1990)
 JV6740
 JV6740'RECOVERED 1990
 JV6740'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK7505 ***********************************************************************
 DK7505  HT_MOD      -  This is a Height Modernization Survey Station.
 DK7505  DESIGNATION -  DMT 1
 DK7505  PID         -  DK7505
 DK7505  STATE/COUNTY-  MD/C OF BALTIMORE
 DK7505  COUNTRY     -  US
 DK7505  USGS QUAD   -  BALTIMORE EAST (2016)
 DK7505
 DK7505                         *CURRENT SURVEY CONTROL
 DK7505  ______________________________________________________________________
 DK7505* NAD 83(2011) POSITION- 39 15 21.47843(N) 076 32 06.64044(W)   ADJUSTED
 DK7505* NAD 83(2011) ELLIP HT-   -30.691 (meters)        (06/27/12)   ADJUSTED
 DK7505* NAD 83(2011) EPOCH   -  2010.00
 DK7505* NAVD 88 ORTHO HEIGHT -     2.28  (meters)        7.5   (feet) GPS OBS
 DK7505  ______________________________________________________________________
 DK7505  NAVD 88 orthometric height was determined with geoid model    GEOID12A
 DK7505  GEOID HEIGHT    -        -32.946 (meters)                     GEOID12A
 DK7505  GEOID HEIGHT    -        -32.946 (meters)                     GEOID18
 DK7505  NAD 83(2011) X  -  1,151,521.300 (meters)                     COMP
 DK7505  NAD 83(2011) Y  - -4,809,437.918 (meters)                     COMP
 DK7505  NAD 83(2011) Z  -  4,014,341.614 (meters)                     COMP
 DK7505  LAPLACE CORR    -         -2.84  (seconds)                    DEFLEC18
 DK7505
 DK7505  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DK7505  Standards:
 DK7505         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DK7505            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DK7505  -------------------------------------------------------------------
 DK7505  NETWORK    0.49   1.02           0.21   0.19   0.52     -0.06355165
 DK7505  -------------------------------------------------------------------
 DK7505  Click here for local accuracies and other accuracy information.
 DK7505
 DK7505.The horizontal coordinates were established by GPS observations
 DK7505.and adjusted by the National Geodetic Survey in June 2012.
 DK7505
 DK7505.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DK7505.been affixed to the stable North American tectonic plate. See 
 DK7505.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DK7505
 DK7505.The horizontal coordinates are valid at the epoch date displayed above
 DK7505.which is a decimal equivalence of Year/Month/Day.
 DK7505
 DK7505.The orthometric height was determined by GPS observations and a
 DK7505.high-resolution geoid model using precise GPS observation and
 DK7505.processing techniques.
 DK7505
 DK7505.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK7505.GEOID18 height accuracy estimate available here.
 DK7505
 DK7505.Click photographs - Photos may exist for this station.
 DK7505
 DK7505.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DK7505
 DK7505.The Laplace correction was computed from DEFLEC18 derived deflections.
 DK7505
 DK7505.The ellipsoidal height was determined by GPS observations
 DK7505.and is referenced to NAD 83.
 DK7505
 DK7505. The following values were computed from the NAD 83(2011) position.
 DK7505
 DK7505;                    North         East     Units Scale Factor Converg.
 DK7505;SPC MD       -   176,524.060   440,119.082   MT  0.99997181   +0 17 30.3
 DK7505;SPC MD       -   579,146.02  1,443,957.35   sFT  0.99997181   +0 17 30.3
 DK7505;UTM  18      - 4,346,305.094   367,543.352   MT  0.99981603   -0 58 17.7
 DK7505
 DK7505!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DK7505!SPC MD       -   1.00000482  x   0.99997181  =   0.99997663
 DK7505!UTM  18      -   1.00000482  x   0.99981603  =   0.99982084
 DK7505
 DK7505_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6754346305(NAD 83)
 DK7505
 DK7505                          SUPERSEDED SURVEY CONTROL
 DK7505
 DK7505  NAD 83(2007)-  39 15 21.47881(N)    076 32 06.64089(W) AD(2002.00) 1
 DK7505  ELLIP H (11/28/08)  -30.685  (m)                       GP(2002.00) 3 1
 DK7505  NAVD 88 (11/28/08)    2.2    (m)  GEOID03  model used  GPS OBS        
 DK7505
 DK7505.Superseded values are not recommended for survey control.
 DK7505
 DK7505.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DK7505.See file dsdata.pdf to determine how the superseded data were derived.
 DK7505
 DK7505_MARKER: DD = SURVEY DISK
 DK7505_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 DK7505_SP_SET: CONCRETE DOLPHIN
 DK7505_STAMPING: DMT-1 JUNE 2008
 DK7505_MARK LOGO: MDPORT
 DK7505_MAGNETIC: A = STEEL ROD ADJACENT TO MONUMENT
 DK7505_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 DK7505+STABILITY: POSITION/ELEVATION WELL
 DK7505_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DK7505+SATELLITE: SATELLITE OBSERVATIONS - May 26, 2024
 DK7505
 DK7505  HISTORY     - Date     Condition        Report By
 DK7505  HISTORY     - 20080601 MONUMENTED       JMTMD
 DK7505  HISTORY     - 20130819 GOOD             JMTMD
 DK7505  HISTORY     - 20240526 GOOD             JMTMD
 DK7505
 DK7505                          STATION DESCRIPTION
 DK7505
 DK7505'DESCRIBED BY JMT ENGINEERING 2008
 DK7505'THE MARK IS LOCATED ABOUT 4.8 MI (7.7 KM) EAST-SOUTHEAST OF BALTIMORE,
 DK7505'4.0 MI (6.4 KM) NORTHWEST OF SPARROWS POINT AND 3.5 MI (5.6 KM)
 DK7505'NORTHEAST OF CURTIS BAY AND ON THE GROUNDS OF THE DUNDALK MARINE
 DK7505'TERMINAL.  THE PROPERTY IS OWNED BY THE STATE OF MARYLAND (MD PORT
 DK7505'ADMINISTRATION).
 DK7505'
 DK7505'TO REACH FROM THE TOLL BOOTH AT KEY BRIDGE TAKE EXIT 44 (BROENING
 DK7505'HIGHWAY).  GO WEST ON BROENING HIGHWAY FOR 0.3 KM (0.2 MI) TO EXIT.
 DK7505'CONTINUE ON BROENING HIGHWAY.  GO NORTHWEST 3.7 KM (2.3 MI) TO THIRD
 DK7505'TRAFFIC LIGHT (NORTH SERVICE ROAD).  MAKE LEFT INTO MARINE TERMINAL
 DK7505'(VISITORS GATE).  PASS THROUGH GUARD SHACK TO FIRST LIGHT.  TURN
 DK7505'RIGHT.  GO STRAIGHT 0.2 KM (0.1 MI) TO END OF PIER.  TURN RIGHT TO
 DK7505'CORNER OF PIER.  WALK OUT ON A 250' CONCRETE WALKWAY.  STATION IS ON
 DK7505'FIRST CONCRETE PLATFORM IN WATER.
 DK7505'
 DK7505'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DK7505'A CONCRETE DOLPHIN PLATFORM.  IT IS 61.2 M (200.8 FT) SOUTHWEST OF THE
 DK7505'NORTHWEST CORNER OF BUILDING 90A, 50.5 M (165.7 FT) WEST OF THE
 DK7505'SOUTHWEST CORNER OF BUILDING 90A, 56.5 M (185.4 FT) NORTHEAST OF
 DK7505'CORNER OF BULKHEAD, 3.1 M (10.2 FT) SOUTHWEST OF THE NORTHEAST CORNER
 DK7505'OF THE PLATFORM, AND 1.8 M (5.9 FT) NORTHERLY OF THE NORTHERLY CAP
 DK7505'STAND.
 DK7505
 DK7505                          STATION RECOVERY (2013)
 DK7505
 DK7505'RECOVERY NOTE BY JMT ENGINEERING 2013 (JAF)
 DK7505'RECOVERED AS DESCRIBED.
 DK7505
 DK7505                          STATION RECOVERY (2024)
 DK7505
 DK7505'RECOVERY NOTE BY JMT ENGINEERING 2024 (DL)
 DK7505'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK7506 ***********************************************************************
 DK7506  HT_MOD      -  This is a Height Modernization Survey Station.
 DK7506  DESIGNATION -  DMT 2
 DK7506  PID         -  DK7506
 DK7506  STATE/COUNTY-  MD/C OF BALTIMORE
 DK7506  COUNTRY     -  US
 DK7506  USGS QUAD   -  CURTIS BAY (2016)
 DK7506
 DK7506                         *CURRENT SURVEY CONTROL
 DK7506  ______________________________________________________________________
 DK7506* NAD 83(2011) POSITION- 39 14 43.77103(N) 076 32 19.63890(W)   ADJUSTED
 DK7506* NAD 83(2011) ELLIP HT-   -30.714 (meters)        (06/27/12)   ADJUSTED
 DK7506* NAD 83(2011) EPOCH   -  2010.00
 DK7506* NAVD 88 ORTHO HEIGHT -     2.20  (meters)        7.2   (feet) GPS OBS
 DK7506  ______________________________________________________________________
 DK7506  NAVD 88 orthometric height was determined with geoid model    GEOID12A
 DK7506  GEOID HEIGHT    -        -32.952 (meters)                     GEOID12A
 DK7506  GEOID HEIGHT    -        -32.951 (meters)                     GEOID18
 DK7506  NAD 83(2011) X  -  1,151,389.485 (meters)                     COMP
 DK7506  NAD 83(2011) Y  - -4,810,225.999 (meters)                     COMP
 DK7506  NAD 83(2011) Z  -  4,013,441.105 (meters)                     COMP
 DK7506  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 DK7506
 DK7506  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DK7506  Standards:
 DK7506         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DK7506            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DK7506  -------------------------------------------------------------------
 DK7506  NETWORK    0.73   1.20           0.32   0.27   0.61      0.05170880
 DK7506  -------------------------------------------------------------------
 DK7506  Click here for local accuracies and other accuracy information.
 DK7506
 DK7506.The horizontal coordinates were established by GPS observations
 DK7506.and adjusted by the National Geodetic Survey in June 2012.
 DK7506
 DK7506.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DK7506.been affixed to the stable North American tectonic plate. See 
 DK7506.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DK7506
 DK7506.The horizontal coordinates are valid at the epoch date displayed above
 DK7506.which is a decimal equivalence of Year/Month/Day.
 DK7506
 DK7506.The orthometric height was determined by GPS observations and a
 DK7506.high-resolution geoid model using precise GPS observation and
 DK7506.processing techniques.
 DK7506
 DK7506.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK7506.GEOID18 height accuracy estimate available here.
 DK7506
 DK7506.Click photographs - Photos may exist for this station.
 DK7506
 DK7506.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DK7506
 DK7506.The Laplace correction was computed from DEFLEC18 derived deflections.
 DK7506
 DK7506.The ellipsoidal height was determined by GPS observations
 DK7506.and is referenced to NAD 83.
 DK7506
 DK7506. The following values were computed from the NAD 83(2011) position.
 DK7506
 DK7506;                    North         East     Units Scale Factor Converg.
 DK7506;SPC MD       -   175,359.670   439,813.319   MT  0.99997062   +0 17 22.1
 DK7506;SPC MD       -   575,325.85  1,442,954.20   sFT  0.99997062   +0 17 22.1
 DK7506;UTM  18      - 4,345,147.907   367,212.045   MT  0.99981711   -0 58 25.1
 DK7506
 DK7506!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DK7506!SPC MD       -   1.00000482  x   0.99997062  =   0.99997544
 DK7506!UTM  18      -   1.00000482  x   0.99981711  =   0.99982193
 DK7506
 DK7506_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6721245147(NAD 83)
 DK7506
 DK7506                          SUPERSEDED SURVEY CONTROL
 DK7506
 DK7506  NAD 83(2007)-  39 14 43.77142(N)    076 32 19.63935(W) AD(2002.00) 1
 DK7506  ELLIP H (11/28/08)  -30.708  (m)                       GP(2002.00) 3 1
 DK7506  NAVD 88 (11/28/08)    2.2    (m)  GEOID03  model used  GPS OBS        
 DK7506
 DK7506.Superseded values are not recommended for survey control.
 DK7506
 DK7506.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DK7506.See file dsdata.pdf to determine how the superseded data were derived.
 DK7506
 DK7506_MARKER: DD = SURVEY DISK
 DK7506_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 DK7506_SP_SET: CONCRETE PIER
 DK7506_STAMPING: DMT-2 JUNE 2008
 DK7506_MARK LOGO: MDPORT
 DK7506_MAGNETIC: A = STEEL ROD ADJACENT TO MONUMENT
 DK7506_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DK7506_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DK7506+SATELLITE: SATELLITE OBSERVATIONS - August 19, 2013
 DK7506
 DK7506  HISTORY     - Date     Condition        Report By
 DK7506  HISTORY     - 20080601 MONUMENTED       JMTMD
 DK7506  HISTORY     - 20130819 GOOD             JMTMD
 DK7506  HISTORY     - 20240527 MARK NOT FOUND   JMTMD
 DK7506
 DK7506                          STATION DESCRIPTION
 DK7506
 DK7506'DESCRIBED BY JMT ENGINEERING 2008
 DK7506'THE MARK IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTHEAST OF BALTIMORE, 3.8
 DK7506'MI (6.1 KM) WEST-NORTHWEST OF SPARROWS POINT AND 3.0 MI (4.8 KM)
 DK7506'EAST-NORTHEAST OF CURTIS BAY AND ON THE GROUNDS OF THE DUNDALK MARINE
 DK7506'TERMINAL.  THE PROPERTY IS OWNED BY THE STATE OF MARYLAND (MD PORT
 DK7506'ADMINISTRATION).
 DK7506'
 DK7506'TO REACH FROM KEY BRIDGE TOLL BOOTH TAKE EXIT 44 (BROENING HIGHWAY).
 DK7506'GO NORTHWEST 3.7 KM (2.3 MI) TO THIRD TRAFFIC LIGHT (NORTH SERVICE
 DK7506'ROAD).  MAKE LEFT INTO MARINE TERMINAL (VISITOR'S GATE).  PASS THROUGH
 DK7506'GUARD SHACK AND THROUGH FIRST LIGHT.  STAY STRAIGHT 1.4 KM (0.9 MI) TO
 DK7506'SEVENTH STREET.  TURN RIGHT AND GO STRAIGHT 0.2 KM (0.1 MI) TO END OF
 DK7506'CORNER OF PIER.
 DK7506'
 DK7506'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DK7506'THE A CONCRETE PAD FOR A MORING DOLPHIN.  IT IS 31.0 M (101.7 FT) WEST
 DK7506'OF THE SOUTHWEST CORNER OF A METAL SHED (NUMBER 6), 2.8 M (9.2 FT)
 DK7506'EAST OF THE EDGE OF A BULKHEAD RUNNING NORTH/SOUTH, 2.7 M (8.9 FT)
 DK7506'NORTHEAST OF THE EDGE OF A BULKHEAD RUNNING NORTHWEST/SOUTHEAST, 1.8 M
 DK7506'(5.9 FT) NORTHEAST OF THE SOUTHERLY CAP STAND, AND 1.8 M (5.9 FT) EAST
 DK7506'OF THE NORTHERLY CAP STAND.
 DK7506
 DK7506                          STATION RECOVERY (2013)
 DK7506
 DK7506'RECOVERY NOTE BY JMT ENGINEERING 2013 (JAF)
 DK7506'RECOVERED AS DESCRIBED.
 DK7506
 DK7506                          STATION RECOVERY (2024)
 DK7506
 DK7506'RECOVERY NOTE BY JMT ENGINEERING 2024 (BSU)
 DK7506'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ4478 ***********************************************************************
 DQ4478  HT_MOD      -  This is a Height Modernization Survey Station.
 DQ4478  DESIGNATION -  DMT 2 RESET
 DQ4478  PID         -  DQ4478
 DQ4478  STATE/COUNTY-  MD/C OF BALTIMORE
 DQ4478  COUNTRY     -  US
 DQ4478  USGS QUAD   -  CURTIS BAY (2016)
 DQ4478
 DQ4478                         *CURRENT SURVEY CONTROL
 DQ4478  ______________________________________________________________________
 DQ4478* NAD 83(2011) POSITION- 39 14 43.76606(N) 076 32 19.68882(W)   ADJUSTED
 DQ4478* NAD 83(2011) ELLIP HT-   -30.734 (meters)        (11/07/24)   ADJUSTED
 DQ4478* NAD 83(2011) EPOCH   -  2010.00
 DQ4478* NAVD 88 ORTHO HEIGHT -     2.22  (meters)        7.3   (feet) GPS OBS
 DQ4478  ______________________________________________________________________
 DQ4478  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DQ4478  GEOID HEIGHT    -        -32.952 (meters)                     GEOID12B
 DQ4478  GEOID HEIGHT    -        -32.951 (meters)                     GEOID18
 DQ4478  NAD 83(2011) X  -  1,151,388.339 (meters)                     COMP
 DQ4478  NAD 83(2011) Y  - -4,810,226.357 (meters)                     COMP
 DQ4478  NAD 83(2011) Z  -  4,013,440.974 (meters)                     COMP
 DQ4478  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 DQ4478
 DQ4478  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ4478  Standards:
 DQ4478         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ4478            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ4478  -------------------------------------------------------------------
 DQ4478  NETWORK    0.60   1.45           0.26   0.23   0.74     -0.10869489
 DQ4478  -------------------------------------------------------------------
 DQ4478  Click here for local accuracies and other accuracy information.
 DQ4478
 DQ4478.The horizontal coordinates were established by GPS observations
 DQ4478.and adjusted by the JMT ENGINEERING in November 2024.
 DQ4478
 DQ4478.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ4478.been affixed to the stable North American tectonic plate. See 
 DQ4478.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DQ4478
 DQ4478.The horizontal coordinates are valid at the epoch date displayed above
 DQ4478.which is a decimal equivalence of Year/Month/Day.
 DQ4478
 DQ4478.The orthometric height was determined by GPS observations and a
 DQ4478.high-resolution geoid model using precise GPS observation and
 DQ4478.processing techniques.
 DQ4478
 DQ4478.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ4478.GEOID18 height accuracy estimate available here.
 DQ4478
 DQ4478.Click photographs - Photos may exist for this station.
 DQ4478
 DQ4478.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DQ4478
 DQ4478.The Laplace correction was computed from DEFLEC18 derived deflections.
 DQ4478
 DQ4478.The ellipsoidal height was determined by GPS observations
 DQ4478.and is referenced to NAD 83.
 DQ4478
 DQ4478. The following values were computed from the NAD 83(2011) position.
 DQ4478
 DQ4478;                    North         East     Units Scale Factor Converg.
 DQ4478;SPC MD       -   175,359.511   439,812.123   MT  0.99997062   +0 17 22.1
 DQ4478;SPC MD       -   575,325.33  1,442,950.27   sFT  0.99997062   +0 17 22.1
 DQ4478;UTM  18      - 4,345,147.774   367,210.846   MT  0.99981711   -0 58 25.2
 DQ4478
 DQ4478!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ4478!SPC MD       -   1.00000482  x   0.99997062  =   0.99997544
 DQ4478!UTM  18      -   1.00000482  x   0.99981711  =   0.99982193
 DQ4478
 DQ4478_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6721045147(NAD 83)
 DQ4478
 DQ4478                          SUPERSEDED SURVEY CONTROL
 DQ4478
 DQ4478  NAD 83(2011)-  39 14 43.76639(N)    076 32 19.68817(W) AD(2010.00) 0
 DQ4478  ELLIP H (02/07/17)  -30.727  (m)                       GP(2010.00)    
 DQ4478
 DQ4478.Superseded values are not recommended for survey control.
 DQ4478
 DQ4478.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DQ4478.See file dsdata.pdf to determine how the superseded data were derived.
 DQ4478
 DQ4478_MARKER: DD = SURVEY DISK
 DQ4478_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 DQ4478_SP_SET: PAD FOR A MORING DOLPHIN
 DQ4478_STAMPING: DMT-2 RESET OCTOBER 2016
 DQ4478_MARK LOGO: MDPORT
 DQ4478_PROJECTION: FLUSH
 DQ4478_MAGNETIC: N = NO MAGNETIC MATERIAL
 DQ4478_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DQ4478_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DQ4478+SATELLITE: SATELLITE OBSERVATIONS - May 27, 2024
 DQ4478
 DQ4478  HISTORY     - Date     Condition        Report By
 DQ4478  HISTORY     - 20161011 MONUMENTED       JMTMD
 DQ4478  HISTORY     - 20240527 GOOD             JMTMD
 DQ4478
 DQ4478                          STATION DESCRIPTION
 DQ4478
 DQ4478'DESCRIBED BY JMT ENGINEERING 2016 (EAS)
 DQ4478'THE MARK IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTHEAST OF BALTIMORE, 3.8
 DQ4478'MI (6.1 KM) WEST-NORTHWEST OF SPARROWS POINT AND 3.0 MI (4.8 KM)
 DQ4478'EAST-NORTHEAST OF CURTIS BAY AND ON THE GROUNDS OF THE DUNDALK MARINE
 DQ4478'TERMINAL.  THE PROPERTY IS OWNED BY THE STATE OF MARYLAND (MD PORT
 DQ4478'ADMINISTRATION).
 DQ4478'
 DQ4478'TO REACH FROM KEY BRIDGE TOLL BOOTH TAKE EXIT 44 (BROENING HIGHWAY).
 DQ4478'GO NORTHWEST 3.7 KM (2.3 MI) TO THIRD TRAFFIC LIGHT (NORTH SERVICE
 DQ4478'ROAD).  MAKE LEFT INTO MARINE TERMINAL (VISITOR'S GATE).  PASS THROUGH
 DQ4478'GUARD SHACK AND THROUGH FIRST LIGHT.  STAY STRAIGHT 1.4 KM (0.9 MI) TO
 DQ4478'SEVENTH STREET.  TURN RIGHT AND GO STRAIGHT 0.2 KM (0.1 MI) TO END OF
 DQ4478'CORNER OF THE PIER.
 DQ4478'
 DQ4478'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DQ4478'THE A CONCRETE PAD FOR A MORING DOLPHIN.  IT IS 97.7 FT (29.8 M) WEST
 DQ4478'OF THE SOUTHWEST CORNER OF A METAL SHED (NUMBER 6), 13.2 FT (4.0 M)
 DQ4478'EAST OF THE EDGE OF A BULKHEAD RUNNING NORTH/SOUTH, 13.3 FT (4.1 M)
 DQ4478'NORTHEAST OF THE EDGE OF A BULKHEAD RUNNING NORTHWEST/SOUTHEAST, 10.3
 DQ4478'FT (3.1 M) NORTHEAST OF THE SOUTHERLY CAP STAND AND 9.9 FT (3.0 M)
 DQ4478'EAST OF THE NORTHERLY CAP STAND.
 DQ4478
 DQ4478                          STATION RECOVERY (2024)
 DQ4478
 DQ4478'RECOVERY NOTE BY JMT ENGINEERING 2024 (DL)
 DQ4478'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ4479 ***********************************************************************
 DQ4479  HT_MOD      -  This is a Height Modernization Survey Station.
 DQ4479  DESIGNATION -  DMT 3
 DQ4479  PID         -  DQ4479
 DQ4479  STATE/COUNTY-  MD/BALTIMORE
 DQ4479  COUNTRY     -  US
 DQ4479  USGS QUAD   -  CURTIS BAY (2016)
 DQ4479
 DQ4479                         *CURRENT SURVEY CONTROL
 DQ4479  ______________________________________________________________________
 DQ4479* NAD 83(2011) POSITION- 39 14 52.89969(N) 076 31 25.50980(W)   ADJUSTED
 DQ4479* NAD 83(2011) ELLIP HT-   -30.661 (meters)        (02/07/17)   ADJUSTED
 DQ4479* NAD 83(2011) EPOCH   -  2010.00
 DQ4479* NAVD 88 ORTHO HEIGHT -     2.30  (meters)        7.5   (feet) GPS OBS
 DQ4479  ______________________________________________________________________
 DQ4479  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DQ4479  GEOID HEIGHT    -        -32.967 (meters)                     GEOID12B
 DQ4479  GEOID HEIGHT    -        -32.969 (meters)                     GEOID18
 DQ4479  NAD 83(2011) X  -  1,152,610.274 (meters)                     COMP
 DQ4479  NAD 83(2011) Y  - -4,809,750.519 (meters)                     COMP
 DQ4479  NAD 83(2011) Z  -  4,013,659.153 (meters)                     COMP
 DQ4479  LAPLACE CORR    -         -2.36  (seconds)                    DEFLEC18
 DQ4479
 DQ4479  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ4479  Standards:
 DQ4479         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ4479            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ4479  -------------------------------------------------------------------
 DQ4479  NETWORK    0.49   0.94           0.23   0.16   0.48      0.03483407
 DQ4479  -------------------------------------------------------------------
 DQ4479  Click here for local accuracies and other accuracy information.
 DQ4479
 DQ4479.The horizontal coordinates were established by GPS observations
 DQ4479.and adjusted by the JMT ENGINEERING in February 2017.
 DQ4479
 DQ4479.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ4479.been affixed to the stable North American tectonic plate. See 
 DQ4479.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DQ4479
 DQ4479.The horizontal coordinates are valid at the epoch date displayed above
 DQ4479.which is a decimal equivalence of Year/Month/Day.
 DQ4479
 DQ4479.The orthometric height was determined by GPS observations and a
 DQ4479.high-resolution geoid model using precise GPS observation and
 DQ4479.processing techniques.
 DQ4479
 DQ4479.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ4479.GEOID18 height accuracy estimate available here.
 DQ4479
 DQ4479.Click photographs - Photos may exist for this station.
 DQ4479
 DQ4479.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DQ4479
 DQ4479.The Laplace correction was computed from DEFLEC18 derived deflections.
 DQ4479
 DQ4479.The ellipsoidal height was determined by GPS observations
 DQ4479.and is referenced to NAD 83.
 DQ4479
 DQ4479. The following values were computed from the NAD 83(2011) position.
 DQ4479
 DQ4479;                    North         East     Units Scale Factor Converg.
 DQ4479;SPC MD       -   175,647.841   441,109.785   MT  0.99997090   +0 17 56.1
 DQ4479;SPC MD       -   576,271.29  1,447,207.69   sFT  0.99997090   +0 17 56.1
 DQ4479;UTM  18      - 4,345,407.388   368,514.345   MT  0.99981287   -0 57 51.1
 DQ4479
 DQ4479!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ4479!SPC MD       -   1.00000481  x   0.99997090  =   0.99997571
 DQ4479!UTM  18      -   1.00000481  x   0.99981287  =   0.99981768
 DQ4479
 DQ4479_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6851445407(NAD 83)
 DQ4479
 DQ4479                          SUPERSEDED SURVEY CONTROL
 DQ4479
 DQ4479.No superseded survey control is available for this station.
 DQ4479
 DQ4479_MARKER: DD = SURVEY DISK
 DQ4479_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DQ4479_STAMPING: DMT-3 OCTOBER 2016
 DQ4479_MARK LOGO: MDPORT
 DQ4479_PROJECTION: FLUSH
 DQ4479_MAGNETIC: N = NO MAGNETIC MATERIAL
 DQ4479_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DQ4479+STABILITY: SURFACE MOTION
 DQ4479_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DQ4479+SATELLITE: SATELLITE OBSERVATIONS - October 11, 2016
 DQ4479
 DQ4479  HISTORY     - Date     Condition        Report By
 DQ4479  HISTORY     - 20161011 MONUMENTED       JMTMD
 DQ4479
 DQ4479                          STATION DESCRIPTION
 DQ4479
 DQ4479'DESCRIBED BY JMT ENGINEERING 2016 (EAS)
 DQ4479'THE MARK IS LOCATED ABOUT 5.6 MI (9.0 KM) SOUTHEAST OF BALTIMORE, 3.3
 DQ4479'MI (5.3 KM) WEST-NORTHWEST OF SPARROWS POINT AND 0.25 MI (0.40 KM)
 DQ4479'SOUTHWEST OF DUNDALK AND IS ON THE GROUNDS OF THE DUNDALK MARINE
 DQ4479'TERMINAL.  THE PROPERTY IS OWNED BY THE STATE OF MARYLAND (MD PORT
 DQ4479'ADMINISTRATION).
 DQ4479'
 DQ4479'TO REACH FROM KEY BRIDGE TOLL BOOTH TAKE EXIT 44 (BROENING HIGHWAY).
 DQ4479'GO NORTHWEST 3.7 KM (2.3 MI) TO THIRD TRAFFIC LIGHT (NORTH SERVICE
 DQ4479'ROAD).  TURN LEFT INTO MARINE TERMINAL (VISITOR'S GATE).  PASS THROUGH
 DQ4479'GUARD SHACK.  TURN RIGHT ONTO FIRST STREET FOR 0.08 MI (0.13 KM) TO AN
 DQ4479'ENTRANCE ROAD TO BUILDING 97C.  TURN RIGHT FOR 0.01 MI (0.02 KM) AND
 DQ4479'TO THE STATION ON THE LEFT.
 DQ4479'
 DQ4479'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DQ4479'CONCRETE.  IT IS 55.0 FT (16.8 M) SOUTHWEST OF AN INLET, 47.4 FT (14.4
 DQ4479'M) EAST OF AN INLET AND 19.8 FT (6.0 M) NORTH OF A STOP SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ4480 ***********************************************************************
 DQ4480  HT_MOD      -  This is a Height Modernization Survey Station.
 DQ4480  DESIGNATION -  DMT 4
 DQ4480  PID         -  DQ4480
 DQ4480  STATE/COUNTY-  MD/BALTIMORE
 DQ4480  COUNTRY     -  US
 DQ4480  USGS QUAD   -  BALTIMORE EAST (2016)
 DQ4480
 DQ4480                         *CURRENT SURVEY CONTROL
 DQ4480  ______________________________________________________________________
 DQ4480* NAD 83(2011) POSITION- 39 15 04.66362(N) 076 31 42.67141(W)   ADJUSTED
 DQ4480* NAD 83(2011) ELLIP HT-   -30.580 (meters)        (02/07/17)   ADJUSTED
 DQ4480* NAD 83(2011) EPOCH   -  2010.00
 DQ4480* NAVD 88 ORTHO HEIGHT -     2.37  (meters)        7.8   (feet) GPS OBS
 DQ4480  ______________________________________________________________________
 DQ4480  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DQ4480  GEOID HEIGHT    -        -32.959 (meters)                     GEOID12B
 DQ4480  GEOID HEIGHT    -        -32.960 (meters)                     GEOID18
 DQ4480  NAD 83(2011) X  -  1,152,156.631 (meters)                     COMP
 DQ4480  NAD 83(2011) Y  - -4,809,623.243 (meters)                     COMP
 DQ4480  NAD 83(2011) Z  -  4,013,940.144 (meters)                     COMP
 DQ4480  LAPLACE CORR    -         -2.55  (seconds)                    DEFLEC18
 DQ4480
 DQ4480  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ4480  Standards:
 DQ4480         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ4480            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ4480  -------------------------------------------------------------------
 DQ4480  NETWORK    0.52   1.04           0.24   0.18   0.53      0.04288712
 DQ4480  -------------------------------------------------------------------
 DQ4480  Click here for local accuracies and other accuracy information.
 DQ4480
 DQ4480.The horizontal coordinates were established by GPS observations
 DQ4480.and adjusted by the JMT ENGINEERING in February 2017.
 DQ4480
 DQ4480.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ4480.been affixed to the stable North American tectonic plate. See 
 DQ4480.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DQ4480
 DQ4480.The horizontal coordinates are valid at the epoch date displayed above
 DQ4480.which is a decimal equivalence of Year/Month/Day.
 DQ4480
 DQ4480.The orthometric height was determined by GPS observations and a
 DQ4480.high-resolution geoid model using precise GPS observation and
 DQ4480.processing techniques.
 DQ4480
 DQ4480.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ4480.GEOID18 height accuracy estimate available here.
 DQ4480
 DQ4480.Click photographs - Photos may exist for this station.
 DQ4480
 DQ4480.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DQ4480
 DQ4480.The Laplace correction was computed from DEFLEC18 derived deflections.
 DQ4480
 DQ4480.The ellipsoidal height was determined by GPS observations
 DQ4480.and is referenced to NAD 83.
 DQ4480
 DQ4480. The following values were computed from the NAD 83(2011) position.
 DQ4480
 DQ4480;                    North         East     Units Scale Factor Converg.
 DQ4480;SPC MD       -   176,008.477   440,696.416   MT  0.99997127   +0 17 45.3
 DQ4480;SPC MD       -   577,454.48  1,445,851.49   sFT  0.99997127   +0 17 45.3
 DQ4480;UTM  18      - 4,345,776.991   368,109.091   MT  0.99981418   -0 58 02.2
 DQ4480
 DQ4480!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ4480!SPC MD       -   1.00000480  x   0.99997127  =   0.99997607
 DQ4480!UTM  18      -   1.00000480  x   0.99981418  =   0.99981898
 DQ4480
 DQ4480_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6810945776(NAD 83)
 DQ4480
 DQ4480                          SUPERSEDED SURVEY CONTROL
 DQ4480
 DQ4480.No superseded survey control is available for this station.
 DQ4480
 DQ4480_MARKER: DD = SURVEY DISK
 DQ4480_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DQ4480_STAMPING: DMT-4 OCTOBER 2016
 DQ4480_MARK LOGO: MDPORT
 DQ4480_PROJECTION: FLUSH
 DQ4480_MAGNETIC: N = NO MAGNETIC MATERIAL
 DQ4480_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DQ4480+STABILITY: SURFACE MOTION
 DQ4480_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DQ4480+SATELLITE: SATELLITE OBSERVATIONS - October 12, 2016
 DQ4480
 DQ4480  HISTORY     - Date     Condition        Report By
 DQ4480  HISTORY     - 20161012 MONUMENTED       JMTMD
 DQ4480
 DQ4480                          STATION DESCRIPTION
 DQ4480
 DQ4480'DESCRIBED BY JMT ENGINEERING 2016 (EAS)
 DQ4480'THE MARK IS LOCATED ABOUT 5.2 MI (8.4 KM) SOUTHEAST OF BALTIMORE, 3.6
 DQ4480'MI (5.8 KM) WEST-NORTHWEST OF SPARROWS POINT AND 0.44 MI (0.71 KM)
 DQ4480'WEST OF DUNDALK AND IS ON THE GROUNDS OF THE DUNDALK MARINE TERMINAL.
 DQ4480'THE PROPERTY IS OWNED BY THE STATE OF MARYLAND (MD PORT
 DQ4480'ADMINISTRATION).
 DQ4480'
 DQ4480'TO REACH FROM KEY BRIDGE TOLL BOOTH TAKE EXIT 44 (BROENING HIGHWAY).
 DQ4480'GO NORTHWEST 3.7 KM (2.3 MI) TO THIRD TRAFFIC LIGHT (NORTH SERVICE
 DQ4480'ROAD).  MAKE LEFT INTO MARINE TERMINAL (VISITOR'S GATE).  PASS THROUGH
 DQ4480'GUARD SHACK.  TURN RIGHT ONTO FIRST STREET FOR 0.42 MI (0.68 KM) TO C
 DQ4480'STREET AND THE STATION ON THE LEFT.
 DQ4480'
 DQ4480'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DQ4480'CONCRETE.  IT IS 20.5 FT (6.2 M) NORTH OF A CONCRETE PAD AROUND AN
 DQ4480'INLET, 13.3 FT (4.1 M) SOUTHEAST OF A SIGNAL POLE AND 12.9 FT (3.9 M)
 DQ4480'SOUTHWEST OF THE NOSE OF A CURB ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3186 ***********************************************************************
 DS3186  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3186  DESIGNATION -  DMT 5
 DS3186  PID         -  DS3186
 DS3186  STATE/COUNTY-  MD/C OF BALTIMORE
 DS3186  COUNTRY     -  US
 DS3186  USGS QUAD   -  BALTIMORE EAST (2016)
 DS3186
 DS3186                         *CURRENT SURVEY CONTROL
 DS3186  ______________________________________________________________________
 DS3186* NAD 83(2011) POSITION- 39 15 13.88342(N) 076 32 00.40405(W)   ADJUSTED
 DS3186* NAD 83(2011) ELLIP HT-   -30.635 (meters)        (11/07/24)   ADJUSTED
 DS3186* NAD 83(2011) EPOCH   -  2010.00
 DS3186* NAVD 88 ORTHO HEIGHT -     2.33  (meters)        7.6   (feet) GPS OBS
 DS3186  ______________________________________________________________________
 DS3186  GEOID HEIGHT    -        -32.951 (meters)                     GEOID18
 DS3186  NAD 83(2011) X  -  1,151,701.237 (meters)                     COMP
 DS3186  NAD 83(2011) Y  - -4,809,547.276 (meters)                     COMP
 DS3186  NAD 83(2011) Z  -  4,014,160.283 (meters)                     COMP
 DS3186  LAPLACE CORR    -         -2.75  (seconds)                    DEFLEC18
 DS3186
 DS3186  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3186  Standards:
 DS3186         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3186            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3186  -------------------------------------------------------------------
 DS3186  NETWORK    0.58   1.39           0.25   0.22   0.71     -0.11433029
 DS3186  -------------------------------------------------------------------
 DS3186  Click here for local accuracies and other accuracy information.
 DS3186
 DS3186.The horizontal coordinates were established by GPS observations
 DS3186.and adjusted by the JMT ENGINEERING in November 2024.
 DS3186
 DS3186.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3186.been affixed to the stable North American tectonic plate. See 
 DS3186.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3186
 DS3186.The horizontal coordinates are valid at the epoch date displayed above
 DS3186.which is a decimal equivalence of Year/Month/Day.
 DS3186
 DS3186.The orthometric height was determined by GPS observations and a
 DS3186.high-resolution geoid model using precise GPS observation and
 DS3186.processing techniques.
 DS3186
 DS3186.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3186.GEOID18 height accuracy estimate available here.
 DS3186
 DS3186.Click photographs - Photos may exist for this station.
 DS3186
 DS3186.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3186
 DS3186.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3186
 DS3186.The ellipsoidal height was determined by GPS observations
 DS3186.and is referenced to NAD 83.
 DS3186
 DS3186. The following values were computed from the NAD 83(2011) position.
 DS3186
 DS3186;                    North         East     Units Scale Factor Converg.
 DS3186;SPC MD       -   176,290.610   440,269.796   MT  0.99997157   +0 17 34.2
 DS3186;SPC MD       -   578,380.11  1,444,451.82   sFT  0.99997157   +0 17 34.2
 DS3186;UTM  18      - 4,346,068.415   367,688.860   MT  0.99981555   -0 58 13.6
 DS3186
 DS3186!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3186!SPC MD       -   1.00000481  x   0.99997157  =   0.99997638
 DS3186!UTM  18      -   1.00000481  x   0.99981555  =   0.99982036
 DS3186
 DS3186_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6768846068(NAD 83)
 DS3186
 DS3186                          SUPERSEDED SURVEY CONTROL
 DS3186
 DS3186.No superseded survey control is available for this station.
 DS3186
 DS3186_MARKER: DD = SURVEY DISK
 DS3186_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS3186_STAMPING: DMT 5
 DS3186_MARK LOGO: MDPORT
 DS3186_PROJECTION: FLUSH
 DS3186_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DS3186_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS3186+STABILITY: SURFACE MOTION
 DS3186_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3186+SATELLITE: SATELLITE OBSERVATIONS - May 26, 2024
 DS3186
 DS3186  HISTORY     - Date     Condition        Report By
 DS3186  HISTORY     - 20240526 MONUMENTED       JMTMD
 DS3186
 DS3186                          STATION DESCRIPTION
 DS3186
 DS3186'DESCRIBED BY JMT ENGINEERING 2024 (BSU)
 DS3186'THE MARK IS LOCATED ABOUT 4.9 MI (7.9 KM) EAST-SOUTHEAST OF BALTIMORE,
 DS3186'3.9 MI (6.3 KM) NORTHWEST OF SPARROWS POINT AND 3.5 MI (5.6 KM)
 DS3186'EAST-NORTHEAST OF CURTIS BAY AND ON THE GROUNDS OF THE DUNDALK MARINE
 DS3186'TERMINAL.  THE PROPERTY IS OWNED BY THE STATE OF MARYLAND (MD PORT
 DS3186'ADMINISTRATION).
 DS3186'
 DS3186'TO REACH FROM THE FT MCHENRY TUNNEL TAKE EXIT 56 (KEITH AVE) AND
 DS3186'CONTINUE FOR 2.02 KM (1.26 MI) BEFORE BEARING RIGHT ON BROENING
 DS3186'HIGHWAY.  GO ON BROENING HIGHWAY FOR 1.45 KM (0.90 MI) TO NORTH
 DS3186'SERVICE ROAD.  GO RIGHT INTO MARINE TERMINAL (VISITORS GATE).  PASS
 DS3186'THROUGH GUARD SHACK AND CONTINUE 0.177 KM (0.1 MI) TO THE STATION ON
 DS3186'THE RIGHT SHOULDER OF NORTH SERVICE ROAD.
 DS3186'
 DS3186'THE STATION MARK IS A STANDARD MARYLAND PORT SURVEY CONTROL DISK SET
 DS3186'FLUSH IN CONCRETE.  IT IS 34.04 FT (10.4 M) SOUTHEAST OF WATER VALVE,
 DS3186'6.72 FT (2.0 M) SOUTHWEST OF FIRE HYDRANT, 4.6 FT (1.4 M) SOUTHWEST OF
 DS3186'BOLLARD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3187 ***********************************************************************
 DS3187  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3187  DESIGNATION -  DMT 6
 DS3187  PID         -  DS3187
 DS3187  STATE/COUNTY-  MD/C OF BALTIMORE
 DS3187  COUNTRY     -  US
 DS3187  USGS QUAD   -  CURTIS BAY (2016)
 DS3187
 DS3187                         *CURRENT SURVEY CONTROL
 DS3187  ______________________________________________________________________
 DS3187* NAD 83(2011) POSITION- 39 14 50.41562(N) 076 31 47.95616(W)   ADJUSTED
 DS3187* NAD 83(2011) ELLIP HT-   -30.742 (meters)        (11/07/24)   ADJUSTED
 DS3187* NAD 83(2011) EPOCH   -  2010.00
 DS3187* NAVD 88 ORTHO HEIGHT -     2.24  (meters)        7.3   (feet) GPS OBS
 DS3187  ______________________________________________________________________
 DS3187  GEOID HEIGHT    -        -32.962 (meters)                     GEOID18
 DS3187  NAD 83(2011) X  -  1,152,098.130 (meters)                     COMP
 DS3187  NAD 83(2011) Y  - -4,809,922.993 (meters)                     COMP
 DS3187  NAD 83(2011) Z  -  4,013,599.777 (meters)                     COMP
 DS3187  LAPLACE CORR    -         -2.57  (seconds)                    DEFLEC18
 DS3187
 DS3187  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3187  Standards:
 DS3187         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3187            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3187  -------------------------------------------------------------------
 DS3187  NETWORK    0.58   1.41           0.25   0.22   0.72     -0.10797646
 DS3187  -------------------------------------------------------------------
 DS3187  Click here for local accuracies and other accuracy information.
 DS3187
 DS3187.The horizontal coordinates were established by GPS observations
 DS3187.and adjusted by the JMT ENGINEERING in November 2024.
 DS3187
 DS3187.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3187.been affixed to the stable North American tectonic plate. See 
 DS3187.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3187
 DS3187.The horizontal coordinates are valid at the epoch date displayed above
 DS3187.which is a decimal equivalence of Year/Month/Day.
 DS3187
 DS3187.The orthometric height was determined by GPS observations and a
 DS3187.high-resolution geoid model using precise GPS observation and
 DS3187.processing techniques.
 DS3187
 DS3187.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3187.GEOID18 height accuracy estimate available here.
 DS3187
 DS3187.Click photographs - Photos may exist for this station.
 DS3187
 DS3187.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3187
 DS3187.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3187
 DS3187.The ellipsoidal height was determined by GPS observations
 DS3187.and is referenced to NAD 83.
 DS3187
 DS3187. The following values were computed from the NAD 83(2011) position.
 DS3187
 DS3187;                    North         East     Units Scale Factor Converg.
 DS3187;SPC MD       -   175,568.449   440,571.968   MT  0.99997082   +0 17 42.0
 DS3187;SPC MD       -   576,010.82  1,445,443.20   sFT  0.99997082   +0 17 42.0
 DS3187;UTM  18      - 4,345,339.881   367,974.994   MT  0.99981462   -0 58 05.2
 DS3187
 DS3187!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3187!SPC MD       -   1.00000482  x   0.99997082  =   0.99997564
 DS3187!UTM  18      -   1.00000482  x   0.99981462  =   0.99981944
 DS3187
 DS3187_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6797445339(NAD 83)
 DS3187
 DS3187                          SUPERSEDED SURVEY CONTROL
 DS3187
 DS3187.No superseded survey control is available for this station.
 DS3187
 DS3187_MARKER: DD = SURVEY DISK
 DS3187_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS3187_STAMPING: DMT 6
 DS3187_MARK LOGO: MDPORT
 DS3187_PROJECTION: FLUSH
 DS3187_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DS3187_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS3187+STABILITY: SURFACE MOTION
 DS3187_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3187+SATELLITE: SATELLITE OBSERVATIONS - May 26, 2024
 DS3187
 DS3187  HISTORY     - Date     Condition        Report By
 DS3187  HISTORY     - 20240526 MONUMENTED       JMTMD
 DS3187
 DS3187                          STATION DESCRIPTION
 DS3187
 DS3187'DESCRIBED BY JMT ENGINEERING 2024 (BSU)
 DS3187'THE MARK IS LOCATED ABOUT 5.3 MI (8.5 KM) SOUTHEAST OF BALTIMORE, 3.5
 DS3187'MI (5.6 KM) NORTHWEST OF SPARROWS POINT AND 3.4 MI (5.5 KM)
 DS3187'EAST-NORTHEAST OF CURTIS BAY AND ON THE GROUNDS OF THE DUNDALK MARINE
 DS3187'TERMINAL.  THE PROPERTY IS OWNED BY THE STATE OF MARYLAND (MD PORT
 DS3187'ADMINISTRATION).
 DS3187'
 DS3187'TO REACH FROM THE FT MCHENRY TUNNEL TAKE EXIT 56 (KEITH AVE) AND
 DS3187'CONTINUE FOR 2.02 KM (1.26 MI) BEFORE BEARING RIGHT ON BROENING
 DS3187'HIGHWAY.  GO ON BROENING HIGHWAY FOR 1.45 KM (0.90 MI) TO NORTH
 DS3187'SERVICE ROAD.  GO RIGHT INTO MARINE TERMINAL (VISITORS GATE).  PASS
 DS3187'THROUGH GUARD SHACK AND CONTINUE 1.0 KM (0.6 MI) TO FIFTH STREET.  GO
 DS3187'RIGHT ON FIFTH STREET FOR 0.47 KM (0.29 MI) TO C STREET.  GO LEFT ON C
 DS3187'STREET 15.25 M (50.0 FT) TO THE STATION ON THE LEFT SHOULDER OF C
 DS3187'STREET.
 DS3187'
 DS3187'THE STATION MARK IS A STANDARD MARYLAND PORT SURVEY CONTROL DISK SET
 DS3187'FLUSH IN CONCRETE.  IT IS 32.25 FT (9.8 M) NORTH OF WATER VALVE, 27.6
 DS3187'FT (8.4 M) NORTHWEST OF A MANHOLE IN THE CENTER OF C STREET, 11.3 FT
 DS3187'(3.4 M) NORTHEAST OF INLET CORNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3188 ***********************************************************************
 DS3188  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3188  DESIGNATION -  DMT 7
 DS3188  PID         -  DS3188
 DS3188  STATE/COUNTY-  MD/C OF BALTIMORE
 DS3188  COUNTRY     -  US
 DS3188  USGS QUAD   -  CURTIS BAY (2016)
 DS3188
 DS3188                         *CURRENT SURVEY CONTROL
 DS3188  ______________________________________________________________________
 DS3188* NAD 83(2011) POSITION- 39 14 22.85601(N) 076 31 58.04183(W)   ADJUSTED
 DS3188* NAD 83(2011) ELLIP HT-   -30.661 (meters)        (11/07/24)   ADJUSTED
 DS3188* NAD 83(2011) EPOCH   -  2010.00
 DS3188* NAVD 88 ORTHO HEIGHT -     2.32  (meters)        7.6   (feet) GPS OBS
 DS3188  ______________________________________________________________________
 DS3188  GEOID HEIGHT    -        -32.965 (meters)                     GEOID18
 DS3188  NAD 83(2011) X  -  1,151,988.170 (meters)                     COMP
 DS3188  NAD 83(2011) Y  - -4,810,502.263 (meters)                     COMP
 DS3188  NAD 83(2011) Z  -  4,012,941.608 (meters)                     COMP
 DS3188  LAPLACE CORR    -         -2.64  (seconds)                    DEFLEC18
 DS3188
 DS3188  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3188  Standards:
 DS3188         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3188            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3188  -------------------------------------------------------------------
 DS3188  NETWORK    0.58   1.45           0.25   0.22   0.74     -0.09150864
 DS3188  -------------------------------------------------------------------
 DS3188  Click here for local accuracies and other accuracy information.
 DS3188
 DS3188.The horizontal coordinates were established by GPS observations
 DS3188.and adjusted by the JMT ENGINEERING in November 2024.
 DS3188
 DS3188.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3188.been affixed to the stable North American tectonic plate. See 
 DS3188.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3188
 DS3188.The horizontal coordinates are valid at the epoch date displayed above
 DS3188.which is a decimal equivalence of Year/Month/Day.
 DS3188
 DS3188.The orthometric height was determined by GPS observations and a
 DS3188.high-resolution geoid model using precise GPS observation and
 DS3188.processing techniques.
 DS3188
 DS3188.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3188.GEOID18 height accuracy estimate available here.
 DS3188
 DS3188.Click photographs - Photos may exist for this station.
 DS3188
 DS3188.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3188
 DS3188.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3188
 DS3188.The ellipsoidal height was determined by GPS observations
 DS3188.and is referenced to NAD 83.
 DS3188
 DS3188. The following values were computed from the NAD 83(2011) position.
 DS3188
 DS3188;                    North         East     Units Scale Factor Converg.
 DS3188;SPC MD       -   174,717.335   440,334.485   MT  0.99996997   +0 17 35.7
 DS3188;SPC MD       -   573,218.46  1,444,664.06   sFT  0.99996997   +0 17 35.7
 DS3188;UTM  18      - 4,344,494.340   367,718.848   MT  0.99981545   -0 58 11.0
 DS3188
 DS3188!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3188!SPC MD       -   1.00000481  x   0.99996997  =   0.99997478
 DS3188!UTM  18      -   1.00000481  x   0.99981545  =   0.99982026
 DS3188
 DS3188_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6771844494(NAD 83)
 DS3188
 DS3188                          SUPERSEDED SURVEY CONTROL
 DS3188
 DS3188.No superseded survey control is available for this station.
 DS3188
 DS3188_MARKER: DD = SURVEY DISK
 DS3188_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS3188_STAMPING: DMT 7
 DS3188_MARK LOGO: MDPORT
 DS3188_PROJECTION: FLUSH
 DS3188_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DS3188_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS3188+STABILITY: SURFACE MOTION
 DS3188_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3188+SATELLITE: SATELLITE OBSERVATIONS - May 26, 2024
 DS3188
 DS3188  HISTORY     - Date     Condition        Report By
 DS3188  HISTORY     - 20240526 MONUMENTED       JMTMD
 DS3188
 DS3188                          STATION DESCRIPTION
 DS3188
 DS3188'DESCRIBED BY JMT ENGINEERING 2024 (BSU)
 DS3188'THE MARK IS LOCATED ABOUT 5.5 MI (8.8 KM) SOUTHEAST OF BALTIMORE, 3.3
 DS3188'MI (5.3 KM) WEST-NORTHWEST OF SPARROWS POINT AND 3.1 MI (5.0 KM)
 DS3188'EAST-NORTHEAST OF CURTIS BAY AND ON THE GROUNDS OF THE DUNDALK MARINE
 DS3188'TERMINAL.  THE PROPERTY IS OWNED BY THE STATE OF MARYLAND (MD PORT
 DS3188'ADMINISTRATION).
 DS3188'
 DS3188'TO REACH FROM THE FT MCHENRY TUNNEL TAKE EXIT 56 (KEITH AVE) AND
 DS3188'CONTINUE FOR 2.02 KM (1.26 MI) BEFORE BEARING RIGHT ON BROENING
 DS3188'HIGHWAY.  GO ON BROENING HIGHWAY FOR 1.45 KM (0.90 MI) TO NORTH
 DS3188'SERVICE ROAD.  GO RIGHT INTO MARINE TERMINAL (VISITORS GATE).  PASS
 DS3188'THROUGH GUARD SHACK AND CONTINUE FOR 1.60 KM (0.99 MI) ON NORTH
 DS3188'SERVICE ROAD UNTIL IT TURNS INTO G STREET.  THE MARK IS 54 M (177.2
 DS3188'FT) WEST NEAR ROW 1H.
 DS3188'
 DS3188'THE STATION MARK IS A STANDARD MARYLAND PORT SURVEY CONTROL DISK SET
 DS3188'FLUSH IN CONCRETE.  IT IS 77.5 FT (23.6 M) NORTHEAST OF WATER VALVE,
 DS3188'55 FT (16.8 M) NORTH OF INLET CORNER, 42 FT (12.8 M) SOUTH OF METAL
 DS3188'VAULT LID.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0848 ***********************************************************************
 JV0848  DESIGNATION -  DOAD
 JV0848  PID         -  JV0848
 JV0848  STATE/COUNTY-  MD/BALTIMORE
 JV0848  COUNTRY     -  US
 JV0848  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0848
 JV0848                         *CURRENT SURVEY CONTROL
 JV0848  ______________________________________________________________________
 JV0848* NAD 83(1991) POSITION- 39 18 10.09133(N) 076 44 38.96049(W)   ADJUSTED
 JV0848* NAVD 88 ORTHO HEIGHT -   132.174 (meters)      433.64  (feet) ADJUSTED
 JV0848  ______________________________________________________________________
 JV0848  GEOID HEIGHT    -        -32.289 (meters)                     GEOID18
 JV0848  LAPLACE CORR    -         -4.61  (seconds)                    DEFLEC18
 JV0848  DYNAMIC HEIGHT  -        132.105 (meters)      433.41  (feet) COMP
 JV0848  MODELED GRAVITY -    980,103.3   (mgal)                       NAVD 88
 JV0848
 JV0848  HORZ ORDER      -  SECOND
 JV0848  VERT ORDER      -  SECOND    CLASS 0
 JV0848
 JV0848.The horizontal coordinates were established by classical geodetic methods
 JV0848.and adjusted by the National Geodetic Survey in January 1992.
 JV0848
 JV0848.The orthometric height was determined by differential leveling and
 JV0848.adjusted by the NATIONAL GEODETIC SURVEY
 JV0848.in June 1991.
 JV0848
 JV0848.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0848.GEOID18 height accuracy estimate available here.
 JV0848
 JV0848.Click photographs - Photos may exist for this station.
 JV0848
 JV0848.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0848
 JV0848.The dynamic height is computed by dividing the NAVD 88
 JV0848.geopotential number by the normal gravity value computed on the
 JV0848.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0848.degrees latitude (g = 980.6199 gals.).
 JV0848
 JV0848.The modeled gravity was interpolated from observed gravity values.
 JV0848
 JV0848. The following values were computed from the NAD 83(1991) position.
 JV0848
 JV0848;                    North         East     Units Scale Factor Converg.
 JV0848;SPC MD       -   181,652.585   422,067.574   MT  0.99997756   +0 09 38.1
 JV0848;SPC MD       -   595,971.86  1,384,733.37   sFT  0.99997756   +0 09 38.1
 JV0848;UTM  18      - 4,351,829.995   349,611.704   MT  0.99987847   -1 06 18.0
 JV0848
 JV0848!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0848!SPC MD       -   0.99998433  x   0.99997756  =   0.99996189
 JV0848!UTM  18      -   0.99998433  x   0.99987847  =   0.99986280
 JV0848
 JV0848:                Primary Azimuth Mark                     Grid Az
 JV0848:SPC MD       -  BALTIMORE RADIO STA WITH MAST            167 56 33.6
 JV0848:UTM  18      -  BALTIMORE RADIO STA WITH MAST            169 12 29.7
 JV0848
 JV0848_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4961151829(NAD 83)
 JV0848
 JV0848|---------------------------------------------------------------------|
 JV0848| PID    Reference Object                     Distance      Geod. Az  |
 JV0848|                                                           dddmmss.s |
 JV0848| CA9347 DOAD RM 2                            18.201 METERS 00257     |
 JV0848| CA9346 DOAD RM 1                            23.819 METERS 07257     |
 JV0848| JV5619 CATONSVILLE BALTIMORE MUN TANK      APPROX. 2.0 KM 1524842.3 |
 JV0848| JV5625 BALTIMORE RADIO STA WITH MAST       APPROX. 2.0 KM 1680611.7 |
 JV0848|---------------------------------------------------------------------|
 JV0848
 JV0848                          SUPERSEDED SURVEY CONTROL
 JV0848
 JV0848  NAD 83(1986)-  39 18 10.08849(N)    076 44 38.96883(W) AD(       ) 2
 JV0848  NAD 27      -  39 18 09.70640(N)    076 44 40.06600(W) AD(       ) 2
 JV0848  NGVD 29             132.39   (m)          434.3    (f) LEVELING    3  
 JV0848  NGVD 29 (11/26/84)  132.394  (m)          434.36   (f) ADJUSTED    2 0
 JV0848
 JV0848.Superseded values are not recommended for survey control.
 JV0848
 JV0848.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0848.See file dsdata.pdf to determine how the superseded data were derived.
 JV0848
 JV0848_MARKER: DS = TRIANGULATION STATION DISK
 JV0848_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV0848+WITH SETTING: PAVEMENT
 JV0848_SP_SET: SLAB
 JV0848_STAMPING: DOAD 1956
 JV0848_MARK LOGO: CGS
 JV0848_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0848+STABILITY: SURFACE MOTION
 JV0848
 JV0848  HISTORY     - Date     Condition        Report By
 JV0848  HISTORY     - 1957     MONUMENTED       MDBCSM
 JV0848  HISTORY     - 1960     SEE DESCRIPTION  MDDT
 JV0848  HISTORY     - 1960     GOOD             CGS
 JV0848  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV0848
 JV0848                          STATION DESCRIPTION
 JV0848
 JV0848'DESCRIBED BY MD BUR SURV AND MAPS 1957 (JCE)
 JV0848'STATION IS LOCATED ABOUT 7 MILES WEST OF THE CENTER OF
 JV0848'BALTIMORE, 1.2 MILES NORTH OF U.S. HIGHWAY 40, AND JUST NORTH OF
 JV0848'JOHNNY CAKE ROAD.  STATION IS A MARYLAND BUREAU OF CONTROL SURVEYS
 JV0848'BRONZE DISK SET IN A DRILL HOLE IN THE CENTER OF A 6X6 FOOT
 JV0848'SQUARE CONCRETE SLAB.  PURPOSE OF THE SLAB IS FOR AN OLD WELL
 JV0848'COVERING.  THE MARK IS 115 FEET NORTHEAST OF A LONE TREE,
 JV0848'PROJECTS ABOUT 8 INCHES AND THE DISK IS STAMPED DOAD 1956.
 JV0848'
 JV0848'REFERENCE MARK NO. 1 IS 74 FEET EAST OF 6X6 CONCRETE SQUARE.  THE
 JV0848'MARK IS SET IN ROCK FLUSH WITH THE GROUND AND THE DISK IS STAMPED
 JV0848'DOAD NO 1 1956.
 JV0848'
 JV0848'REFERENCE MARK NO. 2 IS 56 FEET NORTH OF 6X6 CONCRETE SQUARE.  THE
 JV0848'MARK IS SET IN ROCK FLUSH WITH THE GROUND AND THE DISK IS STAMPED
 JV0848'DOAD NO 2 1956.
 JV0848'
 JV0848'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY 40 AND ROLLING ROAD,
 JV0848'ABOUT 7 MILES WEST OF BALTIMORE, GO EAST ON U.S. HIGHWAY 40 FOR
 JV0848'0.75 MILE TO BALTIMORE WITH RADIO TOWER ON RIGHT.  CONTINUE AHEAD
 JV0848'EAST ON HIGHWAY FOR 0.4 MILE TO A TRAFFIC LIGHT AT
 JV0848'CROSSROAD.  TURN LEFT AND GO NORTH ON INGLESIDE AVENUE, (PAST
 JV0848'SHOPPING CENTER) FOR 0.35 MILE TO A T INTERSECTION.  TURN LEFT
 JV0848'FOR 0.05 MILE TO A ROAD RIGHT.  CONTINUE STRAIGHT AHEAD ON
 JV0848'SURFACE ROAD AND GO 0.8 MILE TO A LANE TO RIGHT.  CONTINUE AHEAD
 JV0848'FOR 0.15 MILE TO A BRIDGE.  CROSS AND CONTINUE FOR 0.1 MILE
 JV0848'TO TOP OF GRADE AND STATION IN FIELD ABOUT 200 FEET TO THE
 JV0848'NORTH.
 JV0848'
 JV0848'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV0848
 JV0848                          STATION RECOVERY (1960)
 JV0848
 JV0848'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 JV0848'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO BE
 JV0848'IN GOOD CONDITION.  PENDING HIGHWAY CONSTRUCTION MADE IT
 JV0848'NECESSARY TO DESTROY THE STATION AND REFERENCE MARKS NO. 1 AND
 JV0848'NO. 2.  A NEW STATION DOAD 2 1960 AND TWO NEW REFERENCE
 JV0848'MARKS WERE ESTABLISHED.
 JV0848
 JV0848                          STATION RECOVERY (1960)
 JV0848
 JV0848'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960
 JV0848'1.3 MI NW FROM CATONSVILLE.
 JV0848'1.3 MILES NORTHWEST ALONG JOHNNYCAKE ROAD FROM ITS JUNCTION WITH
 JV0848'U.S. HIGHWAY 40 AT CATONSVILLE, IN A LARGE OPEN FIELD, 120 YARDS
 JV0848'NORTHEAST OF AND ACROSS JOHNNYCAKE ROAD FROM A RESIDENCE AT
 JV0848'6607 JOHNNYCAKE ROAD, 105 YARDS NORTHEAST OF THE ROAD, 38 YARDS
 JV0848'NORTHEAST OF A LONE DOUBLE TRUNKED PEAR TREE, ON TOP OF AND IN
 JV0848'THE CENTER OF A 6-BY 6-FOOT CONCRETE SLAB PROJECTING 6 INCHES
 JV0848'ABOVE THE GROUND.
 JV0848
 JV0848                          STATION RECOVERY (2003)
 JV0848
 JV0848'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0848'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5632 ***********************************************************************
 JV5632  HT_MOD      -  This is a Height Modernization Survey Station.
 JV5632  DESIGNATION -  DOAD 2
 JV5632  PID         -  JV5632
 JV5632  STATE/COUNTY-  MD/BALTIMORE
 JV5632  COUNTRY     -  US
 JV5632  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5632
 JV5632                         *CURRENT SURVEY CONTROL
 JV5632  ______________________________________________________________________
 JV5632* NAD 83(1991) POSITION- 39 18 08.10463(N) 076 44 41.52066(W)   NO CHECK
 JV5632* NAD 83(1991) ELLIP HT-    97.175 (meters)        (08/29/25)   NO CHECK
 JV5632* NAVD 88 ORTHO HEIGHT -   129.46  (meters)      424.7   (feet) GPS OBS
 JV5632  ______________________________________________________________________
 JV5632  GEOID HEIGHT    -        -32.288 (meters)                     GEOID18
 JV5632  NAD 83(1991) X  -  1,133,188.988 (meters)                     COMP
 JV5632  NAD 83(1991) Y  - -4,810,549.746 (meters)                     COMP
 JV5632  NAD 83(1991) Z  -  4,018,400.232 (meters)                     COMP
 JV5632  LAPLACE CORR    -         -4.57  (seconds)                    DEFLEC18
 JV5632  HORZ ORDER      -  THIRD
 JV5632
 JV5632  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV5632  Standards:
 JV5632         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV5632            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV5632  -------------------------------------------------------------------
 JV5632  NETWORK    0.72   1.51           0.32   0.26   0.77      0.02071789
 JV5632  -------------------------------------------------------------------
 JV5632  Click here for local accuracies and other accuracy information.
 JV5632
 JV5632.The horizontal coordinates were established by classical geodetic methods
 JV5632.and adjusted by the National Geodetic Survey in January 1992.
 JV5632
 JV5632.No horizontal observational check was made to the station.
 JV5632
 JV5632.The orthometric height was determined by GPS observations and a
 JV5632.high-resolution geoid model using precise GPS observation and
 JV5632.processing techniques.
 JV5632
 JV5632.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5632.GEOID18 height accuracy estimate available here.
 JV5632
 JV5632.Click photographs - Photos may exist for this station.
 JV5632
 JV5632.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV5632
 JV5632.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5632
 JV5632.The ellipsoidal height was determined by GPS observations
 JV5632.and is referenced to NAD 83.
 JV5632
 JV5632. The following values were computed from the NAD 83(1991) position.
 JV5632
 JV5632;                    North         East     Units Scale Factor Converg.
 JV5632;SPC MD       -   181,591.146   422,006.405   MT  0.99997749   +0 09 36.5
 JV5632;SPC MD       -   595,770.28  1,384,532.68   sFT  0.99997749   +0 09 36.5
 JV5632;UTM  18      - 4,351,769.929   349,549.199   MT  0.99987871   -1 06 19.5
 JV5632
 JV5632!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5632!SPC MD       -   0.99998475  x   0.99997749  =   0.99996224
 JV5632!UTM  18      -   0.99998475  x   0.99987871  =   0.99986347
 JV5632
 JV5632:                Primary Azimuth Mark                     Grid Az
 JV5632:SPC MD       -  BALTIMORE WESLEY MEM METH CH             128 40 43.9
 JV5632:UTM  18      -  BALTIMORE WESLEY MEM METH CH             129 56 39.9
 JV5632
 JV5632_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4954951769(NAD 83)
 JV5632
 JV5632|---------------------------------------------------------------------|
 JV5632| PID    Reference Object                     Distance      Geod. Az  |
 JV5632|                                                           dddmmss.s |
 JV5632| JV0848 DOAD                                 86.699 METERS 04502     |
 JV5632| JV5623 BALTIMORE WESLEY MEM METH CH        APPROX. 2.1 KM 1285020.4 |
 JV5632| CA9345 DOAD 2 RM 4                          23.649 METERS 19700     |
 JV5632| CA9344 DOAD 2 RM 3                          27.743 METERS 31519     |
 JV5632| JV6039 RANDALLSTOWN RAD WBAL CEN MAST      APPROX. 8.5 KM 3435028.8 |
 JV5632|---------------------------------------------------------------------|
 JV5632
 JV5632                          SUPERSEDED SURVEY CONTROL
 JV5632
 JV5632  NAD 83(1986)-  39 18 08.10180(N)    076 44 41.52899(W) AD(       ) 3
 JV5632  NAD 27      -  39 18 07.71980(N)    076 44 42.62630(W) AD(       ) 3
 JV5632  NGVD 29             129.70   (m)          425.5    (f) LEVELING    3  
 JV5632
 JV5632.Superseded values are not recommended for survey control.
 JV5632
 JV5632.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5632.See file dsdata.pdf to determine how the superseded data were derived.
 JV5632
 JV5632_MARKER: DS = TRIANGULATION STATION DISK
 JV5632_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5632_STAMPING: DOAD 2 1960
 JV5632_MARK LOGO: CGS
 JV5632_PROJECTION: PROJECTING 8 CENTIMETERS
 JV5632_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5632+STABILITY: SURFACE MOTION
 JV5632_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5632+SATELLITE: SATELLITE OBSERVATIONS - November 21, 2024
 JV5632
 JV5632  HISTORY     - Date     Condition        Report By
 JV5632  HISTORY     - 1960     MONUMENTED       MDDT
 JV5632  HISTORY     - 19940801 GOOD             USPSQD
 JV5632  HISTORY     - 20030922 GOOD             USPSQD
 JV5632  HISTORY     - 20241121 GOOD             MDSHA
 JV5632
 JV5632                          STATION DESCRIPTION
 JV5632
 JV5632'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 JV5632'STATION IS LOCATED ABOUT 7 MILES WEST OF THE CENTER OF BALTIMORE,
 JV5632'1.2 MILES NORTH OF U.S. ROUTE 40, NEAR THE INTERSECTION
 JV5632'OF JOHNNYCAKE ROAD AND THE BALTIMORE BELTWAY. IT IS APPROXIMATELY
 JV5632'500 FEET WEST OF THE BALTIMORE BELTWAY, 15.5 FEET NORTHEAST OF
 JV5632'THE CENTERLINE OF JOHNNYCAKE ROAD, 2.8 FEET NORTHEAST OF A
 JV5632'POWER POLE, 84.8 FEET NORTHEAST OF A BROWN 2-1/2 STORY FRAME
 JV5632'DWELLING AND 118.0 FEET EAST OF POLE 286302.  THE MARK PROJECTS
 JV5632'3 INCHES AND IS STAMPED DOAD 2 1960.
 JV5632'
 JV5632'REFERENCE MARK NO. 3 IS 17.4 FEET NORTH OF THE CENTERLINE OF
 JV5632'JOHNNYCAKE ROAD AND 27.2 FEET EAST OF POLE 286302.  THE MARK
 JV5632'PROJECTS 6 INCHES AND IS STAMPED DOAD 2 NO 3 1960.
 JV5632'
 JV5632'REFERENCE MARK NO. 4 IS 53.5 FEET SOUTHWEST OF THE CENTERLINE
 JV5632'OF JOHNNYCAKE ROAD, 22.3 FEET EAST OF THE TREE BETWEEN TWO
 JV5632'DRIVEWAYS AND 74.0 FEET SOUTH OF THE POWER POLE NOT NUMBERED. THE
 JV5632'MARK IS FLUSH WITH THE GROUND AND STAMPED DOAD 2 NO 4 1960.
 JV5632'
 JV5632'TO REACH FROM THE JUNCTION OF U.S. ROUTE 40 AND MARYLAND
 JV5632'ROUTE 166 (ROLLING ROAD) PROCEED NORTH ON MARYLAND ROUTE 166
 JV5632'FOR 1.7 MILE TO THE INTERSECTION OF JOHNNYCAKE ROAD, THENCE
 JV5632'RIGHT (EAST) ON JOHNNYCAKE ROAD FOR 0.4 MILE TO STATION ON THE
 JV5632'LEFT AS DESCRIBED.
 JV5632'
 JV5632'NOTE--NO AZIMUTH MARK WAS SET FOR THIS STATION.  THREE PROMINENT
 JV5632'OBJECTS WERE OBSERVED FOR THIS PURPOSE.
 JV5632
 JV5632                          STATION RECOVERY (1994)
 JV5632
 JV5632'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5632'RECOVERED IN GOOD CONDITION.
 JV5632
 JV5632                          STATION RECOVERY (2003)
 JV5632
 JV5632'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5632'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 12 FEET WEST OF THE
 JV5632'EXTENDED CENTERLINE OF A DRIVEWAY TO RESIDENCE AT --6607-- AND 2.8
 JV5632'FEET NORTHEAST OF POWER POLE NUMBER -359298-.
 JV5632'REFERENCE MARK 3 WAS NOT FOUND.
 JV5632'REFERENCE MARK 4 WAS NOT FOUND.  THE DRIVEWAYS DESCRIBED ARE TO -6605-
 JV5632'AND -6607- JOHNNYCAKE ROAD.
 JV5632'TO REACH THE STATION FROM THE JUNCTION OF ROLLING ROAD AND JOHNNYCAKE
 JV5632'ROAD, GO EAST FOR 0.2 MILE ON JOHNNYCAKE ROAD TO ADAMSVIEW ROAD AHEAD
 JV5632'AND JOHNNYCAKE ROAD TURNING TO THE LEFT.  TURN LEFT AND GO 0.3 MILE ON
 JV5632'JOHNNYCAKE ROAD TO THE STATION ON THE LEFT.  A SOUND BARRIER WALL
 JV5632'ALONG THE BELTWAY (I-695) IS VISIBLE TO THE NORTH.
 JV5632
 JV5632                          STATION RECOVERY (2024)
 JV5632
 JV5632'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 JV5632'THE MARK IS 99.7 FT (30.4 M) NORTH-NORTHWEST OF A UTILITY POLE
 JV5632'NUMBERED BELOW THE GROUND AND E 97064, 25.6 FT (7.8 M) NORTHEAST OF A
 JV5632'SANITARY SEWER MANHOLE SET IN THE TOP OF A 10-IN (25 CM) ROUND
 JV5632'CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5237 ***********************************************************************
 JV5237  DESIGNATION -  DOBBINS 2
 JV5237  PID         -  JV5237
 JV5237  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5237  COUNTRY     -  US
 JV5237  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5237
 JV5237                         *CURRENT SURVEY CONTROL
 JV5237  ______________________________________________________________________
 JV5237* NAD 83(1991) POSITION- 39 04 43.43288(N) 076 27 31.15560(W)   ADJUSTED
 JV5237* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 JV5237  ______________________________________________________________________
 JV5237  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 JV5237  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 JV5237  HORZ ORDER      -  THIRD
 JV5237
 JV5237.The horizontal coordinates were established by classical geodetic methods
 JV5237.and adjusted by the National Geodetic Survey in January 1992.
 JV5237
 JV5237.The orthometric height was scaled from a topographic map.
 JV5237
 JV5237.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5237.GEOID18 height accuracy estimate available here.
 JV5237
 JV5237.Click photographs - Photos may exist for this station.
 JV5237
 JV5237.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5237
 JV5237. The following values were computed from the NAD 83(1991) position.
 JV5237
 JV5237;                    North         East     Units Scale Factor Converg.
 JV5237;SPC MD       -   156,885.148   446,840.483   MT  0.99995610   +0 20 23.2
 JV5237;SPC MD       -   514,714.02  1,466,009.15   sFT  0.99995610   +0 20 23.2
 JV5237;UTM  18      - 4,326,526.095   373,829.832   MT  0.99979601   -0 55 10.7
 JV5237
 JV5237!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5237!SPC MD       -   1.00000337  x   0.99995610  =   0.99995947
 JV5237!UTM  18      -   1.00000337  x   0.99979601  =   0.99979938
 JV5237
 JV5237:                Primary Azimuth Mark                     Grid Az
 JV5237:SPC MD       -  SILLERY 2                                053 57 46.6
 JV5237:UTM  18      -  SILLERY 2                                055 13 20.5
 JV5237
 JV5237_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7382926526(NAD 83)
 JV5237
 JV5237|---------------------------------------------------------------------|
 JV5237| PID    Reference Object                     Distance      Geod. Az  |
 JV5237|                                                           dddmmss.s |
 JV5237| JV5182 SILLERY 2                           APPROX. 1.4 KM 0541809.8 |
 JV5237| CA9348 DOBBINS FLAG RM                       3.370 METERS 24926     |
 JV5237|---------------------------------------------------------------------|
 JV5237
 JV5237                          SUPERSEDED SURVEY CONTROL
 JV5237
 JV5237  NAD 83(1986)-  39 04 43.42875(N)    076 27 31.16623(W) AD(       ) 3
 JV5237  NAD 27      -  39 04 42.99800(N)    076 27 32.36500(W) AD(       ) 3
 JV5237  USSD        -  39 04 43.37800(N)    076 27 32.14500(W) AD(       ) 3
 JV5237
 JV5237.Superseded values are not recommended for survey control.
 JV5237
 JV5237.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5237.See file dsdata.pdf to determine how the superseded data were derived.
 JV5237
 JV5237_MARKER: N = NAIL
 JV5237_SETTING: 0 = UNSPECIFIED SETTING
 JV5237
 JV5237  HISTORY     - Date     Condition        Report By
 JV5237  HISTORY     - 1906     MONUMENTED       MDSFC
 JV5237  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5237
 JV5237                          STATION DESCRIPTION
 JV5237
 JV5237'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 JV5237'STATION IS ON THE N SIDE OF MAGOTHY RIVER, ON EXTREME E END OF
 JV5237'DOBBINS ISLAND, ON TOP OF A BLUFF 25 FEET HIGH AND ABOUT 30 FEET
 JV5237'BACK FROM ITS EDGE.  STATION MARK IS NAIL IN STUB PROJECTING 3
 JV5237'INCHES ABOVE SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A
 JV5237'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 JV5237'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 JV5237'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 JV5237'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 3.37 METERS
 JV5237'(11.06 FEET) FROM STATION IN BEARING S 69 DEG 26 MIN W. DISTANCES
 JV5237'AND BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 JV5237'FOLLOWS--CHIMNEY OF HOUSE ON ISLAND, 150 YARDS, S 50 DEG 52 MIN W.
 JV5237'TANGENT TO HICKORY BAR POINT, 3/4 MILE, N 7 DEG 53 MIN E.  YELLOW
 JV5237'HOUSE, 1 MILE N 75 DEG 32 MIN E.  LONE TREE NEAR TRIANGULATION
 JV5237'STATION PURSE, 2-1/4 MILES, S 27 DEG 59 MIN E.
 JV5237
 JV5237                          STATION RECOVERY (1933)
 JV5237
 JV5237'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5237'STATION WAS ON THE TOP OF A 25-FOOT BLUFF, AND 30 FEET BACK FROM
 JV5237'ITS EDGE.  STATION LOCATION NOW FALLS OFF OF THE BLUFF, NEAR
 JV5237'PRESENT HIGH-WATER MARK, SO THAT THE STATION, A NAIL IN A STUB,
 JV5237'HAS BEEN DESTROYED.  NO TRACE OF THE MARYLAND SHELL FISH SURVEY
 JV5237'MONUMENT COULD BE FOUND, HAVING BEEN PROBABLY WASHED AWAY WITH THE
 JV5237'STATION MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5215 ***********************************************************************
 JV5215  DESIGNATION -  DOBBINS FLAG
 JV5215  PID         -  JV5215
 JV5215  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5215  COUNTRY     -  US
 JV5215  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5215
 JV5215                         *CURRENT SURVEY CONTROL
 JV5215  ______________________________________________________________________
 JV5215* NAD 83(1991) POSITION- 39 04 41.38914(N) 076 27 34.31117(W)   ADJUSTED
 JV5215* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 JV5215  ______________________________________________________________________
 JV5215  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 JV5215  LAPLACE CORR    -         -2.59  (seconds)                    DEFLEC18
 JV5215  HORZ ORDER      -  THIRD
 JV5215
 JV5215.The horizontal coordinates were established by classical geodetic methods
 JV5215.and adjusted by the National Geodetic Survey in January 1992.
 JV5215
 JV5215.The orthometric height was scaled from a topographic map.
 JV5215
 JV5215.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5215.GEOID18 height accuracy estimate available here.
 JV5215
 JV5215.Click photographs - Photos may exist for this station.
 JV5215
 JV5215.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5215
 JV5215. The following values were computed from the NAD 83(1991) position.
 JV5215
 JV5215;                    North         East     Units Scale Factor Converg.
 JV5215;SPC MD       -   156,821.678   446,765.013   MT  0.99995607   +0 20 21.2
 JV5215;SPC MD       -   514,505.79  1,465,761.55   sFT  0.99995607   +0 20 21.2
 JV5215;UTM  18      - 4,326,464.308   373,752.997   MT  0.99979625   -0 55 12.6
 JV5215
 JV5215!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5215!SPC MD       -   1.00000337  x   0.99995607  =   0.99995944
 JV5215!UTM  18      -   1.00000337  x   0.99979625  =   0.99979962
 JV5215
 JV5215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7375226464(NAD 83)
 JV5215
 JV5215                          SUPERSEDED SURVEY CONTROL
 JV5215
 JV5215  NAD 83(1986)-  39 04 41.38504(N)    076 27 34.32177(W) AD(       ) 3
 JV5215  NAD 27      -  39 04 40.96000(N)    076 27 35.51600(W) AD(       ) 3
 JV5215  USSD        -  39 04 41.33800(N)    076 27 35.29900(W) AD(       ) 3
 JV5215
 JV5215.Superseded values are not recommended for survey control.
 JV5215
 JV5215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5215.See file dsdata.pdf to determine how the superseded data were derived.
 JV5215
 JV5215_MARK LOGO: CGS
 JV5215
 JV5215  HISTORY     - Date     Condition        Report By
 JV5215  HISTORY     - 1898     MONUMENTED       CGS
 JV5215  HISTORY     - 1906     GOOD             CGS
 JV5215  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5215
 JV5215                          STATION DESCRIPTION
 JV5215
 JV5215'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5215'IN THE MAGOTHY RIVER, ON DOBBINS ISLAND, SE OF A DWELLING HOUSE.
 JV5215'OBSERVED STATION WAS A FLAG IN A LOCUST TREE.  STATION IS MARKED
 JV5215'BY A BOTTLE BURIED 4 FEET BELOW THE SURFACE, AND ABOVE IT A DRAIN
 JV5215'TILE SET IN CEMENT, ITS TOP 3 INCHES BELOW SURFACE AND CENTER
 JV5215'MARKED BY LARGE NAIL.  THE FOLLOWING DISTANCES AND DIRECTIONS ARE
 JV5215'FROM THE STATION--S CORNER OF HOUSE, 9.25 FEET, NW.  N CORNER OF
 JV5215'COOK HOUSE, 25.0 FEET SW.  LOCUST TREE, 8.5 FEET, SE.  AND MAPLE
 JV5215'TREE, 30.0 FEET W.  IN 1906, A NEW STATION CALLED DOBBINS 2 WAS
 JV5215'ESTABLISHED A SHORT DISTANCE AWAY.
 JV5215
 JV5215                          STATION RECOVERY (1961)
 JV5215
 JV5215'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5215'NO TRACE OF THE STATION WAS FOUND.  ALL THE REFERENCES HAVE BEEN
 JV5215'DESTROYED.  THE AREA HAS A COVERING OF DENSE BRUSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5515 ***********************************************************************
 JV5515  DESIGNATION -  DOCK
 JV5515  PID         -  JV5515
 JV5515  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5515  COUNTRY     -  US
 JV5515  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5515
 JV5515                         *CURRENT SURVEY CONTROL
 JV5515  ______________________________________________________________________
 JV5515* NAD 83(1991) POSITION- 39 15 27.22511(N) 076 33 20.14903(W)   ADJUSTED
 JV5515* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5515  ______________________________________________________________________
 JV5515  GEOID HEIGHT    -        -32.910 (meters)                     GEOID18
 JV5515  LAPLACE CORR    -         -3.64  (seconds)                    DEFLEC18
 JV5515  HORZ ORDER      -  THIRD
 JV5515
 JV5515.The horizontal coordinates were established by classical geodetic methods
 JV5515.and adjusted by the National Geodetic Survey in January 1992.
 JV5515
 JV5515.The orthometric height was scaled from a topographic map.
 JV5515
 JV5515.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5515.GEOID18 height accuracy estimate available here.
 JV5515
 JV5515.Click photographs - Photos may exist for this station.
 JV5515
 JV5515.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5515
 JV5515. The following values were computed from the NAD 83(1991) position.
 JV5515
 JV5515;                    North         East     Units Scale Factor Converg.
 JV5515;SPC MD       -   176,692.498   438,355.852   MT  0.99997200   +0 16 44.1
 JV5515;SPC MD       -   579,698.64  1,438,172.49   sFT  0.99997200   +0 16 44.1
 JV5515;UTM  18      - 4,346,512.336   365,784.534   MT  0.99982180   -0 59 04.3
 JV5515
 JV5515!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5515!SPC MD       -   1.00000520  x   0.99997200  =   0.99997720
 JV5515!UTM  18      -   1.00000520  x   0.99982180  =   0.99982700
 JV5515
 JV5515:                Primary Azimuth Mark                     Grid Az
 JV5515:SPC MD       -  WES                                      108 37 16.8
 JV5515:UTM  18      -  WES                                      109 53 05.2
 JV5515
 JV5515_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6578446512(NAD 83)
 JV5515
 JV5515|---------------------------------------------------------------------|
 JV5515| PID    Reference Object                     Distance      Geod. Az  |
 JV5515|                                                           dddmmss.s |
 JV5515| JV5474 CAMP HOLABIRD BLACK YELLOW TK       APPROX. 2.2 KM 0494316.1 |
 JV5515| JV5606 WES                                 APPROX. 1.3 KM 1085400.9 |
 JV5515| CA9349 DOCK RM                              18.959 METERS 27028     |
 JV5515|---------------------------------------------------------------------|
 JV5515
 JV5515                          SUPERSEDED SURVEY CONTROL
 JV5515
 JV5515  NAD 83(1986)-  39 15 27.22156(N)    076 33 20.15791(W) AD(       ) 3
 JV5515  NAD 27      -  39 15 26.83300(N)    076 33 21.28600(W) AD(       ) 3
 JV5515
 JV5515.Superseded values are not recommended for survey control.
 JV5515
 JV5515.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5515.See file dsdata.pdf to determine how the superseded data were derived.
 JV5515
 JV5515_MARKER: DS = TRIANGULATION STATION DISK
 JV5515_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV5515_SP_SET: WHARF
 JV5515_STAMPING: DOCK 1934
 JV5515_MARK LOGO: CGS
 JV5515_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5515+STABILITY: SURFACE MOTION
 JV5515
 JV5515  HISTORY     - Date     Condition        Report By
 JV5515  HISTORY     - 1934     MONUMENTED       CGS
 JV5515  HISTORY     - 1975     GOOD             NGS
 JV5515
 JV5515                          STATION DESCRIPTION
 JV5515
 JV5515'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5515'STANDARD DISK SET IN THE SE CORNER OF THE CONCRETE FOUNDATION OF
 JV5515'ELEVATOR NO.3 OF THE CANTON RAILROAD COMPANY, 1 MILE E OF FORT
 JV5515'MC HENRY ON THE N SIDE OF THE PATAPSCO RIVER.  STATION IS 2 YARDS
 JV5515'FROM S FACE OF PIER AND 3 YARDS FROM E FACE.
 JV5515'
 JV5515'REFERENCE MARK IS STANDARD DISK SET IN SW CORNER OF PIER.
 JV5515'
 JV5515'HEIGHT OF LIGHT ABOVE STATION MARK 3 METERS.
 JV5515
 JV5515                          STATION RECOVERY (1975)
 JV5515
 JV5515'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5515'THE STATION IS A STANDARD BRONZE DISC SET IN THE CONCRETE WHARF
 JV5515'WHICH IS THE FOUNDATION OF THE GRAIN ELEVATOR NUMBER 3 OF THE
 JV5515'CANTON RAILROAD COMPANY.  THE STATION IS IN THE SOUTHEAST CORNER
 JV5515'OF THE WHARF, AND IS 5 FEET NORTH OF THE SOUTH FACE OF THE WHARF
 JV5515'AND 11 FEET WEST OF THE EAST FACE.  FROM THE EAST BASE OF THE
 JV5515'ELEVATOR, OUTSIDE OF BASE, 4.7 FEET.  FROM THE EAST EDGE OF THE
 JV5515'CENTER BASE OR SUPPORT, 27.0 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5743 ***********************************************************************
 HV5743  DESIGNATION -  DOCTOR
 HV5743  PID         -  HV5743
 HV5743  STATE/COUNTY-  MD/TALBOT
 HV5743  COUNTRY     -  US
 HV5743  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5743
 HV5743                         *CURRENT SURVEY CONTROL
 HV5743  ______________________________________________________________________
 HV5743* NAD 83(1991) POSITION- 38 46 52.04090(N) 076 08 37.95918(W)   ADJUSTED
 HV5743* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5743  ______________________________________________________________________
 HV5743  GEOID HEIGHT    -        -34.525 (meters)                     GEOID18
 HV5743  LAPLACE CORR    -         -3.99  (seconds)                    DEFLEC18
 HV5743  HORZ ORDER      -  THIRD
 HV5743
 HV5743.The horizontal coordinates were established by classical geodetic methods
 HV5743.and adjusted by the National Geodetic Survey in January 1992.
 HV5743
 HV5743.The orthometric height was scaled from a topographic map.
 HV5743
 HV5743.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5743.GEOID18 height accuracy estimate available here.
 HV5743
 HV5743.Click photographs - Photos may exist for this station.
 HV5743
 HV5743.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5743
 HV5743. The following values were computed from the NAD 83(1991) position.
 HV5743
 HV5743;                    North         East     Units Scale Factor Converg.
 HV5743;SPC MD       -   124,057.880   474,386.037   MT  0.99995121   +0 32 14.4
 HV5743;SPC MD       -   407,013.23  1,556,381.52   sFT  0.99995121   +0 32 14.4
 HV5743;UTM  18      - 4,293,109.219   400,643.757   MT  0.99972156   -0 42 59.5
 HV5743
 HV5743!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5743!SPC MD       -   1.00000530  x   0.99995121  =   0.99995651
 HV5743!UTM  18      -   1.00000530  x   0.99972156  =   0.99972686
 HV5743
 HV5743:                Primary Azimuth Mark                     Grid Az
 HV5743:SPC MD       -  MC CONNELL                               210 44 29.0
 HV5743:UTM  18      -  MC CONNELL                               211 59 42.9
 HV5743
 HV5743_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0064393109(NAD 83)
 HV5743
 HV5743|---------------------------------------------------------------------|
 HV5743| PID    Reference Object                     Distance      Geod. Az  |
 HV5743|                                                           dddmmss.s |
 HV5743| HV5748 FIG                                 393.803 METERS 05135     |
 HV5743| HV5703 MC CONNELL                          465.273 METERS 2111643.4 |
 HV5743| HV5738 DORRANCE                            458.403 METERS 3024624.1 |
 HV5743|---------------------------------------------------------------------|
 HV5743
 HV5743                          SUPERSEDED SURVEY CONTROL
 HV5743
 HV5743  NAD 83(1986)-  38 46 52.03648(N)    076 08 37.97326(W) AD(       ) 3
 HV5743  NAD 27      -  38 46 51.56000(N)    076 08 39.17400(W) AD(       ) 3
 HV5743  USSD        -  38 46 51.94100(N)    076 08 38.93900(W) AD(       ) 3
 HV5743
 HV5743.Superseded values are not recommended for survey control.
 HV5743
 HV5743.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5743.See file dsdata.pdf to determine how the superseded data were derived.
 HV5743
 HV5743_MARKER: H = DRILL HOLE
 HV5743_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5743_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5743
 HV5743  HISTORY     - Date     Condition        Report By
 HV5743  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5743  HISTORY     - 1939     MARK NOT FOUND   CGS
 HV5743
 HV5743                          STATION DESCRIPTION
 HV5743
 HV5743'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5743'STATION IS ON THE SOUTHEASTERN SHORE OF MILES RIVER, ABOUT 1-1/4
 HV5743'MILES WSW OF MILES RIVER BRIDGE, AND 1-3/4 MILES NE BY E OF LONG
 HV5743'POINT, IN CULTIVATED LAND BACK OF BUSHES, ABOUT 4 FEET ABOVE HIGH
 HV5743'WATER, 4 YARDS SE OF EDGE OF BANK, 55 YARDS SW OF WIRE FENCE, 80
 HV5743'YARDS W OF CORNER OF WIRE FENCE, 100 YARDS W BY S OF A HOUSE, AND
 HV5743'100 YARDS WSW OF A MARSH POINT.  STATION MARK IS A HOLE IN THE
 HV5743'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5743'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5743'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5743'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH
 HV5743'DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW THE BASE OF
 HV5743'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5743'ARE AS FOLLOWS--RIGHT PEAK OF LARGE BARN, 5/8 MILE, S 16 DEG 11
 HV5743'MIN W.  NEAR PEAK OF ROOF OF HOUSE, 5/8 MILE, S 21 DEG 19 MIN W.
 HV5743'SPINDLE ON BARN CUPOLA, 3/4 MILE, S 35 DEG 14 MIN W.  NEAR PEAK OF
 HV5743'HOUSE, 5/8 MILE, S 67 DEG 58 MIN W.  PEAK OF HOUSE, 3/4 MILE, N 35
 HV5743'DEG 13 MIN W.  NAIL IN BLAZE IN 3-INCH BUSH, 6.66 METERS (21.85
 HV5743'FEET), N 12 DEG 24 MIN W.  NAIL IN BLAZE IN 8-INCH APPLE TREE,
 HV5743'17.93 METERS (58.8 FEET), N 5 DEG 28 MIN E.  LEFT CORNER OF HOUSE,
 HV5743'1/2 MILE, N 10 DEG 34 MIN E.  CENTER OF TOWER, 1-1/8 MILES, N 37
 HV5743'DEG 48 MIN E.  LEFT CORNER OF SHED, 100 YARDS N 64 DEG 45 MIN E.
 HV5743'NAIL IN BLAZE IN FENCE POST, 71.35 METERS (234.1 FEET), N 79 DEG
 HV5743'33 MIN E.
 HV5743
 HV5743                          STATION RECOVERY (1939)
 HV5743
 HV5743'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV5743'STATION SEARCHED FOR BUT NOT RECOVERED, REPORTED BY THE PRESENT
 HV5743'OWNER OF THE LAND TO HAVE BEEN BROKEN OFF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5933 ***********************************************************************
 HV5933  DESIGNATION -  DOCTOR MSFC 1910
 HV5933  PID         -  HV5933
 HV5933  STATE/COUNTY-  MD/DORCHESTER
 HV5933  COUNTRY     -  US
 HV5933  USGS QUAD   -  CHURCH CREEK (2016)
 HV5933
 HV5933                         *CURRENT SURVEY CONTROL
 HV5933  ______________________________________________________________________
 HV5933* NAD 83(1991) POSITION- 38 31 49.74426(N) 076 12 17.44222(W)   ADJUSTED
 HV5933* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5933  ______________________________________________________________________
 HV5933  GEOID HEIGHT    -        -34.823 (meters)                     GEOID18
 HV5933  LAPLACE CORR    -         -5.32  (seconds)                    DEFLEC18
 HV5933  HORZ ORDER      -  THIRD
 HV5933
 HV5933.The horizontal coordinates were established by classical geodetic methods
 HV5933.and adjusted by the National Geodetic Survey in January 1992.
 HV5933
 HV5933.The orthometric height was scaled from a topographic map.
 HV5933
 HV5933.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5933.GEOID18 height accuracy estimate available here.
 HV5933
 HV5933.Click photographs - Photos may exist for this station.
 HV5933
 HV5933.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5933
 HV5933. The following values were computed from the NAD 83(1991) position.
 HV5933
 HV5933;                    North         East     Units Scale Factor Converg.
 HV5933;SPC MD       -    96,189.145   469,331.218   MT  0.99996790   +0 29 56.6
 HV5933;SPC MD       -   315,580.55  1,539,797.50   sFT  0.99996790   +0 29 56.6
 HV5933;UTM  18      - 4,265,363.930   394,982.616   MT  0.99973581   -0 45 02.2
 HV5933
 HV5933!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5933!SPC MD       -   1.00000534  x   0.99996790  =   0.99997324
 HV5933!UTM  18      -   1.00000534  x   0.99973581  =   0.99974115
 HV5933
 HV5933:                Primary Azimuth Mark                     Grid Az
 HV5933:SPC MD       -  ELEANOR MSFC 1910                        278 26 36.1
 HV5933:UTM  18      -  ELEANOR MSFC 1910                        279 41 34.9
 HV5933
 HV5933_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9498265363(NAD 83)
 HV5933
 HV5933|---------------------------------------------------------------------|
 HV5933| PID    Reference Object                     Distance      Geod. Az  |
 HV5933|                                                           dddmmss.s |
 HV5933| HV5936 BROOKS MSFC 1910                    APPROX. 0.5 KM 1822808.7 |
 HV5933| HV5948 ELEANOR MSFC 1910                   APPROX. 0.9 KM 2785632.7 |
 HV5933|---------------------------------------------------------------------|
 HV5933
 HV5933                          SUPERSEDED SURVEY CONTROL
 HV5933
 HV5933  NAD 83(1986)-  38 31 49.74191(N)    076 12 17.45784(W) AD(       ) 3
 HV5933  NAD 27      -  38 31 49.33300(N)    076 12 18.64300(W) AD(       ) 3
 HV5933  USSD        -  38 31 49.71700(N)    076 12 18.41900(W) AD(       ) 3
 HV5933
 HV5933.Superseded values are not recommended for survey control.
 HV5933
 HV5933.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5933.See file dsdata.pdf to determine how the superseded data were derived.
 HV5933
 HV5933_MARKER: Z = SEE DESCRIPTION
 HV5933_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5933_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5933+STABILITY: SURFACE MOTION
 HV5933
 HV5933  HISTORY     - Date     Condition        Report By
 HV5933  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5933  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5933
 HV5933                          STATION DESCRIPTION
 HV5933
 HV5933'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5933'ON THE WESTERN SHORE OF FISHING CREEK, ON A PROMINENT POINT ABOUT
 HV5933'1 MILE SE OF LITTLE CHOPTANK RIVER, ON SAND AND MARSHLAND ABOUT 1
 HV5933'FOOT ABOVE HIGH WATER, 30 YARDS SW OF SHORE, 30 YARDS NW OF SHORE,
 HV5933'AND 25 YARDS W OF EXTREME END OF POINT.  STATION IS MARKED BY A
 HV5933'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5933'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV5933'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5933'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE MARK IS THE
 HV5933'CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES
 HV5933'BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO VARIOUS
 HV5933'POINTS OF REFERENCE ARE AS FOLLOWS--CUPOLA ON BROOKS WORKSHOP, 3/8
 HV5933'MILE, S 2 DEG 37 MIN W.  TANGENT OF MCKEILS POINT, 7/8 MILE, N 48
 HV5933'DEG 13 MIN W. MIDDLE DORMER WINDOW OF HOUSE, 2 MILES, N 46 DEG 40
 HV5933'MIN W.  NEAR PEAK OF BARN, 2 MILES, N 30 DEG 12 MIN W.  LEFT
 HV5933'CHIMNEY OF HOUSE, 3/8 MILE, N 30 DEG 36 MIN E.  RIGHT CHIMNEY OF
 HV5933'HOUSE, 1/2 MILE, N 50 DEG 17 MIN E.  NEAR PEAK OF BARN, 1 MILE, S
 HV5933'67 DEG 13 MIN E.  LEFT CHIMNEY OF HOUSE, 1 MILE, S 51 DEG 48 MIN
 HV5933'E. RIGHT CHIMNEY OF HOUSE, 3/8 MILE, S 8 DEG 51 MIN E.  WEATHER
 HV5933'VANE ON BARN CUPOLA 3/8 MILE, S 3 DEG 42 MIN E.
 HV5933
 HV5933                          STATION RECOVERY (1961)
 HV5933
 HV5933'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5933'STATION NOT RECOVERED AFTER A THOROUGH SEARCH OF THE AREA.  IT IS
 HV5933'POSSIBLE THAT THE STATION HAS BEEN DESTROYED BY EROSION OF THE SHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2028 ***********************************************************************
 HU2028  DESIGNATION -  DODD
 HU2028  PID         -  HU2028
 HU2028  STATE/COUNTY-  MD/DORCHESTER
 HU2028  COUNTRY     -  US
 HU2028  USGS QUAD   -  SHARPTOWN (2016)
 HU2028
 HU2028                         *CURRENT SURVEY CONTROL
 HU2028  ______________________________________________________________________
 HU2028* NAD 83(1991) POSITION- 38 37 10.15044(N) 075 42 22.60895(W)   ADJUSTED
 HU2028* NAVD 88 ORTHO HEIGHT -    12.5   (meters)       41.    (feet) VERTCON3
 HU2028  ______________________________________________________________________
 HU2028  GEOID HEIGHT    -        -35.511 (meters)                     GEOID18
 HU2028  LAPLACE CORR    -         -2.49  (seconds)                    DEFLEC18
 HU2028  HORZ ORDER      -  SECOND
 HU2028
 HU2028.The horizontal coordinates were established by classical geodetic methods
 HU2028.and adjusted by the National Geodetic Survey in January 1992.
 HU2028
 HU2028.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2028.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2028
 HU2028.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2028.GEOID18 height accuracy estimate available here.
 HU2028
 HU2028.Click photographs - Photos may exist for this station.
 HU2028
 HU2028.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2028
 HU2028. The following values were computed from the NAD 83(1991) position.
 HU2028
 HU2028;                    North         East     Units Scale Factor Converg.
 HU2028;SPC MD       -   106,564.990   512,659.768   MT  0.99995980   +0 48 43.1
 HU2028;SPC MD       -   349,621.97  1,681,951.26   sFT  0.99995980   +0 48 43.1
 HU2028;UTM  18      - 4,274,788.472   438,515.390   MT  0.99964655   -0 26 27.0
 HU2028
 HU2028!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2028!SPC MD       -   1.00000362  x   0.99995980  =   0.99996342
 HU2028!UTM  18      -   1.00000362  x   0.99964655  =   0.99965017
 HU2028
 HU2028:                Primary Azimuth Mark                     Grid Az
 HU2028:SPC MD       -  RELIANCE                                 356 15 26.5
 HU2028:UTM  18      -  RELIANCE                                 357 30 36.6
 HU2028
 HU2028_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3851574788(NAD 83)
 HU2028
 HU2028|---------------------------------------------------------------------|
 HU2028| PID    Reference Object                     Distance      Geod. Az  |
 HU2028|                                                           dddmmss.s |
 HU2028| DC7239 DODD RM 1                            16.978 METERS 08515     |
 HU2028| HU2015 BOUNDARY MONUMENT 11                  8.113 METERS 08628     |
 HU2028| DC7240 DODD RM 2                            17.491 METERS 17556     |
 HU2028| HU2034 RELIANCE                            APPROX. 1.6 KM 3570409.6 |
 HU2028|---------------------------------------------------------------------|
 HU2028
 HU2028                          SUPERSEDED SURVEY CONTROL
 HU2028
 HU2028  NAD 83(1986)-  38 37 10.14494(N)    075 42 22.62779(W) AD(       ) 2
 HU2028  NAD 27      -  38 37 09.72860(N)    075 42 23.86640(W) AD(       ) 2
 HU2028  NGVD 29 (07/19/86)   12.7    (m)           42.     (f) VERT ANG       
 HU2028
 HU2028.Superseded values are not recommended for survey control.
 HU2028
 HU2028.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2028.See file dsdata.pdf to determine how the superseded data were derived.
 HU2028
 HU2028_MARKER: DS = TRIANGULATION STATION DISK
 HU2028_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2028_STAMPING: DODD 1961
 HU2028_MARK LOGO: CGS
 HU2028_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2028+STABILITY: SURFACE MOTION
 HU2028
 HU2028  HISTORY     - Date     Condition        Report By
 HU2028  HISTORY     - 1962     MONUMENTED       CGS
 HU2028  HISTORY     - 1975     GOOD             NGS
 HU2028  HISTORY     - 1976     GOOD             NGS
 HU2028
 HU2028                          STATION DESCRIPTION
 HU2028
 HU2028'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU2028'THE STATION IS LOCATED ALONG THE WEST SIDE OF A MACADAM ROAD,
 HU2028'1.0 MILE SOUTH OF THE SMALL VILLAGE OF RELIANCE, 5-1/2 MILES
 HU2028'WEST-SOUTHWEST OF SEAFORD, 6-1/2 MILES SOUTHWEST OF FEDERALSBURG
 HU2028'AND ON STATE HIGHWAY PROPERTY.
 HU2028'
 HU2028'TO REACH THE STATION FROM THE INTERSECTION OF MAIN STREET AND
 HU2028'CENTRAL AVENUE IN FEDERALSBURG, GO EAST ON CENTRAL AVENUE FOR
 HU2028'0.2 MILE TO A SIDE STREET RIGHT, (STATE HIGHWAY 313), TURN
 HU2028'RIGHT AND GO SOUTH ON HIGHWAY 313 FOR 1.7 MILES TO WHERE THE
 HU2028'HIGHWAY TURNS SHARP TO THE RIGHT, CONTINUE SOUTHEASTERLY ON
 HU2028'STATE HIGHWAY 577 FOR 3.65 MILES TO A CROSSROAD IN THE SMALL
 HU2028'VILLAGE OF RELIANCE, TURN LEFT FOR ABOUT 150.0 FEET AND THEN
 HU2028'TURN RIGHT AND GO SOUTH ON THE STATE LINE ROAD FOR 1.05 MILES
 HU2028'TO A CULVERT ON THE RIGHT AND THE STATION ON THE RIGHT AS
 HU2028'DESCRIBED.
 HU2028'
 HU2028'THE STATION MARK IS A STANDARD DISK STAMPED DODD 1961, SET IN
 HU2028'TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 HU2028'GROUND SURFACE.  IT IS 4.0 FEET SOUTH-SOUTHEAST OF A STANDARD
 HU2028'METAL WITNESS POST AND MARKER, 10.0 FEET SOUTH OF THE WEST END
 HU2028'OF A CULVERT AND 26.0 FEET WEST OF THE APPROXIMATE CENTER OF THE
 HU2028'MACADAM ROAD.
 HU2028'
 HU2028'REFERENCE MARK 1 IS A STANDARD DISK STAMPED DODD NO 1 1961,
 HU2028'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 HU2028'GROUND SURFACE.  IT IS 28.0 FEET EAST OF THE APPROXIMATE CENTER
 HU2028'OF THE MACADAM ROAD, 11.0 FEET SOUTH-SOUTHEAST OF THE EAST END OF
 HU2028'THE CULVERT AND 55.0 FEET EAST OF THE WITNESS.
 HU2028'
 HU2028'REFERENCE MARK 2 IS A STANDARD DISK STAMPED DODD NO 2 1961,
 HU2028'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS 1 INCH BELOW
 HU2028'THE GROUND SURFACE.  IT IS 25.0 FEET WEST OF THE APPROXIMATE
 HU2028'CENTER OF THE MACADAM ROAD, 61.0 FEET SOUTH OF THE WITNESS POST
 HU2028'AND 67.6 FEET SOUTH OF THE WEST END OF THE CULVERT.
 HU2028'
 HU2028'BOUNDARY MONUMENT NO. 11 IS ASSUMED TO BE IN FEDERALSBURG AS
 HU2028'IT HAD BEEN REPORTED LYING IN THE DITCH FOR SOMETIME AND THEN
 HU2028'HAULED TO FEDERALSBURG BY A LOCAL FARMER.
 HU2028'
 HU2028'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 HU2028
 HU2028                          STATION RECOVERY (1975)
 HU2028
 HU2028'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HU2028'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU2028'CONDITION AS DESCRIBED IN THE 1962 DESCRIPTION.  A DIFFERENCE OF
 HU2028'2 MINUTES AND 52 SECONDS IN DIRECTION TO REFERENCE MARK 1 WAS
 HU2028'NOTED.  ALL OTHER OBSERVATIONS WERE WITHIN CLOSE AGREEMENT WITH
 HU2028'THE 1962 DESCRIPTION.
 HU2028'
 HU2028'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU2028'1-1/4 MILE SOUTH OF RELIANCE.
 HU2028
 HU2028                          STATION RECOVERY (1976)
 HU2028
 HU2028'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU2028'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU2028'CONDITION AS PREVIOUSLY DESCRIBED.  THE DISTANCES AND DIRECTIONS
 HU2028'TO ALL OBJECTS CHECKED THE PREVIOUS OBSERVATIONS.
 HU2028'
 HU2028'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 11 WAS SET
 HU2028'BELOW A MANHOLE IN THE CENTER OF STATE LINE ROAD AT THIS DATE,
 HU2028'SEE DESCRIPTION THEREOF.
 HU2028'
 HU2028'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU2028'1-1/4 MILES SOUTH OF RELIANCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5803 ***********************************************************************
 HV5803  DESIGNATION -  DODD
 HV5803  PID         -  HV5803
 HV5803  STATE/COUNTY-  MD/QUEEN ANNES
 HV5803  COUNTRY     -  US
 HV5803  USGS QUAD   -  QUEENSTOWN (2016)
 HV5803
 HV5803                         *CURRENT SURVEY CONTROL
 HV5803  ______________________________________________________________________
 HV5803* NAD 83(1991) POSITION- 38 55 55.89366(N) 076 07 46.72014(W)   ADJUSTED
 HV5803* NAVD 88 ORTHO HEIGHT -    21.    (meters)       69.    (feet) SCALED
 HV5803  ______________________________________________________________________
 HV5803  GEOID HEIGHT    -        -34.128 (meters)                     GEOID18
 HV5803  LAPLACE CORR    -         -4.10  (seconds)                    DEFLEC18
 HV5803  HORZ ORDER      -  SECOND
 HV5803
 HV5803.The horizontal coordinates were established by classical geodetic methods
 HV5803.and adjusted by the National Geodetic Survey in January 1992.
 HV5803
 HV5803.The orthometric height was scaled from a topographic map.
 HV5803
 HV5803.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5803.GEOID18 height accuracy estimate available here.
 HV5803
 HV5803.Click photographs - Photos may exist for this station.
 HV5803
 HV5803.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5803
 HV5803. The following values were computed from the NAD 83(1991) position.
 HV5803
 HV5803;                    North         East     Units Scale Factor Converg.
 HV5803;SPC MD       -   140,838.696   475,462.786   MT  0.99995033   +0 32 46.6
 HV5803;SPC MD       -   462,068.29  1,559,914.16   sFT  0.99995033   +0 32 46.6
 HV5803;UTM  18      - 4,309,858.566   402,087.460   MT  0.99971805   -0 42 35.7
 HV5803
 HV5803!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5803!SPC MD       -   1.00000209  x   0.99995033  =   0.99995242
 HV5803!UTM  18      -   1.00000209  x   0.99971805  =   0.99972014
 HV5803
 HV5803:                Primary Azimuth Mark                     Grid Az
 HV5803:SPC MD       -  WYE RESET                                078 11 59.8
 HV5803:UTM  18      -  WYE RESET                                079 27 22.1
 HV5803
 HV5803_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0208709858(NAD 83)
 HV5803
 HV5803|---------------------------------------------------------------------|
 HV5803| PID    Reference Object                     Distance      Geod. Az  |
 HV5803|                                                           dddmmss.s |
 HV5803| DG6456 WYE RESET                           APPROX. 4.5 KM 0784446.4 |
 HV5803| CX2698 DODD RM 1                            30.413 METERS 10608     |
 HV5803| CX2699 DODD RM 2                            34.208 METERS 28554     |
 HV5803| CX2697 DODD AZ MK                          APPROX. 0.8 KM 3174155.1 |
 HV5803|---------------------------------------------------------------------|
 HV5803
 HV5803                          SUPERSEDED SURVEY CONTROL
 HV5803
 HV5803  NAD 83(1986)-  38 55 55.88893(N)    076 07 46.73238(W) AD(       ) 2
 HV5803  NAD 27      -  38 55 55.47700(N)    076 07 47.93600(W) AD(       ) 2
 HV5803
 HV5803.Superseded values are not recommended for survey control.
 HV5803
 HV5803.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5803.See file dsdata.pdf to determine how the superseded data were derived.
 HV5803
 HV5803_MARKER: DS = TRIANGULATION STATION DISK
 HV5803_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5803_STAMPING: DODD 1934
 HV5803_MARK LOGO: CGS
 HV5803_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5803+STABILITY: SURFACE MOTION
 HV5803_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV5803+SATELLITE: SATELLITE OBSERVATIONS - April 23, 2003
 HV5803
 HV5803  HISTORY     - Date     Condition        Report By
 HV5803  HISTORY     - 1934     MONUMENTED       CGS
 HV5803  HISTORY     - 1936     MARK NOT FOUND   MDDT
 HV5803  HISTORY     - 1939     GOOD             CGS
 HV5803  HISTORY     - 20030423 GOOD             USPSQD
 HV5803
 HV5803                          STATION DESCRIPTION
 HV5803
 HV5803'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV5803'THIS SECOND-ORDER STATION IS ABOUT 8-1/2 MILES (AIRLINE) SSW OF
 HV5803'THE TOWN OF CENTERVILLE, 2-3/4 MILES (AIRLINE) W OF WYE MILLS, ON
 HV5803'A PENINSULA KNOWN AS WYE NECK, WHICH IS BOUNDED ON THREE SIDES BY
 HV5803'THE WYE RIVER, THE FRONT WYE RIVER, AND THE WYE NARROWS, AND ON
 HV5803'THE PROPERTY OF HENRY DODD.
 HV5803'
 HV5803'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HV5803'BRONZE DISKS SET IN CONCRETE.
 HV5803'
 HV5803'REFERENCE MARK NO.1 IS 30.413 METERS ESE OF THE STATION, 1 METER
 HV5803'N OF THE RAIL FENCE, AND 11 METERS W OF THE GATE.  (MEASURED
 HV5803'DISTANCE FROM STATION - 99.78 FEET).
 HV5803'
 HV5803'REFERENCE MARK NO.2 IS 34.208 METERS (MEASURED, 112.23 FEET) WNW
 HV5803'OF THE STATION, 0.5 METER N OF THE RAIL FENCE, 53 METERS ESE OF
 HV5803'THE JUNCTION OF TWO DIRT ROADS, THE RAIL FENCE, AND A WIRE FENCE,
 HV5803'AND ABOUT 50 METERS NE OF THE JUNCTION OF TWO DIRT ROADS.
 HV5803'
 HV5803'THE AZIMUTH MARK IS ABOUT 1/2 MILE NW OF THE STATION, IN A
 HV5803'WIRE-FENCE LINE, ON E SIDE OF FENCE, ON W SIDE OF A FIELD, 4
 HV5803'METERS ESE OF THE CENTER LINE OF A DIRT ROAD, 38 METERS SSE OF THE
 HV5803'GATE AND SHAWNS MAIL-BOX, 24.7 METERS ENE OF THE NE CORNER OF A
 HV5803'CABIN, 30 METERS N OF THE TOP OF THE GRADE IN THE DIRT ROAD,
 HV5803'AND 11.7 METERS E OF A LARGE OAK TREE.  THE MARK PROJECTS 4
 HV5803'INCHES, AND A 2-FOOT TARGET WILL BE VISIBLE FROM THE GROUND AT THE
 HV5803'STATION.
 HV5803'
 HV5803'TO REACH FROM CENTERVILLE COURTHOUSE GO S ON U.S. HIGHWAY 213 FOR
 HV5803'7.5 MILES TO THE JUNCTION WITH STATE HIGHWAY 404 AT WYE MILLS.
 HV5803'TURN RIGHT ON STATE HIGHWAY 404 AND GO 2.8 MILES TO A DIRT T-ROAD
 HV5803'LEFT AT AN HISTORICAL TABLET WILLIAM PACA.  TURN LEFT ON THIS DIRT
 HV5803'ROAD, GO 1.0 MILE TO A THREE-WAY FORK, KEEP RIGHT FOR 1.7 MILES TO
 HV5803'A FORK WITH A GATE ON LEFT LEADING TO A FARMHOUSE.  THERE IS A
 HV5803'MAIL BOX HERE, H.D. SHAWN.  TURN LEFT THROUGH THE GATE AND FOLLOW
 HV5803'THE FARM ROAD TO THE FARMHOUSE. THIS IS THE HOUSE ON WHICH IS THE
 HV5803'CHIMNEY THAT WAS OBSERVED AND LISTED ABOVE.  THE STATION IS ABOUT
 HV5803'1/4 MILE SSW OF THIS HOUSE, ON THE N SIDE OF A RAIL FENCE THAT
 HV5803'BORDERS THE N EDGE OF SOME WOODS, ABOUT 75 METERS E OF THE
 HV5803'JUNCTION OF TWO DIRT ROADS, 42 METERS W OF A GATE IN THE RAIL
 HV5803'FENCE, IN THE S EDGE OF A FIELD.  THE MARK PROJECTS ABOUT 4 INCHES.
 HV5803
 HV5803                          STATION RECOVERY (1936)
 HV5803
 HV5803'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1936 (RT)
 HV5803'LETTER OF MR. ROLPH TOWNSHEND, DISTRICT ENGINEER, STATE ROADS
 HV5803'COMMISSION, CHESTERTOWN, MARYLAND, 8/15/36--
 HV5803'
 HV5803'DUE TO ROAD CONSTRUCTION IT WAS NECESSARY TO MOVE DODD AZIMUTH MARK.
 HV5803
 HV5803                          STATION RECOVERY (1939)
 HV5803
 HV5803'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV5803'STATION WAS RECOVERED AS DESCRIBED IN GOOD ORDER, EXCEPT THAT THE
 HV5803'NAME ON THE MAIL BOX IS CHARLES BROWN INSTEAD OF H.D. SHAWN.
 HV5803'
 HV5803'THE AZIMUTH MARK AS ORIGINALLY ESTABLISHED APPEARS TO HAVE BEEN
 HV5803'REPLACED BY ANOTHER MARK WHICH IS STAMPED DODD 1936.  THIS MARK IS
 HV5803'ABOUT 1/2 MILE NW OF THE STATION IN A WIRE FENCE LINE, ON THE W
 HV5803'SIDE OF A FIELD 7.9 METERS E OF THE CENTER LINE OF THE DIRT
 HV5803'HIGHWAY, 16.3 METERS E OF A LARGE OAK TREE, AND ABOUT 38 METERS
 HV5803'SSE OF THE LANE LEADING TO THE FARMHOUSE MENTIONED ABOVE.  MARK
 HV5803'PROJECTS ABOUT 4 INCHES ABOVE GROUND.
 HV5803
 HV5803                          STATION RECOVERY (2003)
 HV5803
 HV5803'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HV5803'FROM THE INTERSECTION OF US 50 AND CARMICHAEL ROAD, PROCEED SW 3 MILES
 HV5803'TO WYE ISLAND TO MAIL BOX 1400 AT A GRAVEL DRIVEWAY ON THE LEFT.  FROM
 HV5803'THE CENTER OF CARMICHAEL ROAD PROCEED 160 FEET NE UP THE CENTERLINE OF
 HV5803'THE DRIVEWAY, THENCE 91 FEET NW TO THE MARK AT THE EDGE OF A
 HV5803'CULTIVATED FIELD.  THE MARK IS 21.4 FEET W OF A LARGE DOUBLE TRUNK
 HV5803'HICKORY TREE.
 HV5803'
 HV5803'DODD 1936 AZ - FROM THE INTERSECTION OF US50 AND CARMICHAEL ROAD
 HV5803'IN WYE MILLS PROCEED SW ON CARMICHAEL RD FOR 2.6 MILES TO THE
 HV5803'INTERSECTION AT STAGWELL ROAD, AND THE MARK ON THE LEFT.
 HV5803'
 HV5803'THE MARK IS 5 FT ABOVE THE ROAD, AT THE W EDGE OF A FARM FIELD, 24 FT
 HV5803'NE OF THE CENTERLINE OF CARMICHAEL RD, 99.3 FT E OF A HISTORICAL
 HV5803'MARKER FOR STAGWELL, 44.3 FT N OF POLE 31783/14066, 146 FT S OF
 HV5803'37190/14083, SET IN THE TOP OF A 14 IN SQ CONCRETE MONUMENT THAT
 HV5803'PROJECTS 6 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 CX2697 ***********************************************************************
 CX2697  HT_MOD      -  This is a Height Modernization Survey Station.
 CX2697  DESIGNATION -  DODD AZ MK
 CX2697  PID         -  CX2697
 CX2697  STATE/COUNTY-  MD/QUEEN ANNES
 CX2697  COUNTRY     -  US
 CX2697  USGS QUAD   -  QUEENSTOWN (2016)
 CX2697
 CX2697                         *CURRENT SURVEY CONTROL
 CX2697  ______________________________________________________________________
 CX2697* NAD 83(2011) POSITION- 38 56 10.47370(N) 076 08 02.90919(W)   ADJUSTED
 CX2697* NAD 83(2011) ELLIP HT-   -15.211 (meters)        (02/02/22)   ADJUSTED
 CX2697* NAD 83(2011) EPOCH   -  2010.00
 CX2697* NAVD 88 ORTHO HEIGHT -    18.89  (meters)       62.0   (feet) GPS OBS
 CX2697  ______________________________________________________________________
 CX2697  GEOID HEIGHT    -        -34.103 (meters)                     GEOID18
 CX2697  NAD 83(2011) X  -  1,190,523.167 (meters)                     COMP
 CX2697  NAD 83(2011) Y  - -4,823,003.357 (meters)                     COMP
 CX2697  NAD 83(2011) Z  -  3,986,804.340 (meters)                     COMP
 CX2697  LAPLACE CORR    -         -4.08  (seconds)                    DEFLEC18
 CX2697
 CX2697  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 CX2697  Standards:
 CX2697         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 CX2697            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 CX2697  -------------------------------------------------------------------
 CX2697  NETWORK    0.82   1.86           0.36   0.30   0.95     -0.21784732
 CX2697  -------------------------------------------------------------------
 CX2697  Click here for local accuracies and other accuracy information.
 CX2697
 CX2697.The horizontal coordinates were established by GPS observations
 CX2697.and adjusted by the MD DOT HIGHWAY ADMIN in February 2022.
 CX2697
 CX2697.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 CX2697.been affixed to the stable North American tectonic plate. See 
 CX2697.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 CX2697
 CX2697.The horizontal coordinates are valid at the epoch date displayed above
 CX2697.which is a decimal equivalence of Year/Month/Day.
 CX2697
 CX2697.The orthometric height was determined by GPS observations and a
 CX2697.high-resolution geoid model using precise GPS observation and
 CX2697.processing techniques.
 CX2697
 CX2697.Significant digits in the geoid height do not necessarily reflect accuracy.
 CX2697.GEOID18 height accuracy estimate available here.
 CX2697
 CX2697.Click photographs - Photos may exist for this station.
 CX2697
 CX2697.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 CX2697
 CX2697.The Laplace correction was computed from DEFLEC18 derived deflections.
 CX2697
 CX2697.The ellipsoidal height was determined by GPS observations
 CX2697.and is referenced to NAD 83.
 CX2697
 CX2697. The following values were computed from the NAD 83(2011) position.
 CX2697
 CX2697;                    North         East     Units Scale Factor Converg.
 CX2697;SPC MD       -   141,284.555   475,068.632   MT  0.99995040   +0 32 36.4
 CX2697;SPC MD       -   463,531.08  1,558,621.00   sFT  0.99995040   +0 32 36.4
 CX2697;UTM  18      - 4,310,312.853   401,703.264   MT  0.99971898   -0 42 46.1
 CX2697
 CX2697!             -  Elev Factor  x  Scale Factor =   Combined Factor
 CX2697!SPC MD       -   1.00000239  x   0.99995040  =   0.99995279
 CX2697!UTM  18      -   1.00000239  x   0.99971898  =   0.99972137
 CX2697
 CX2697_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0170310312(NAD 83)
 CX2697
 CX2697                          SUPERSEDED SURVEY CONTROL
 CX2697
 CX2697.No superseded survey control is available for this station.
 CX2697
 CX2697_MARKER: DZ = AZIMUTH MARK DISK
 CX2697_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 CX2697_STAMPING: DODD 1936
 CX2697_MARK LOGO: CGS
 CX2697_PROJECTION: PROJECTING 20 CENTIMETERS
 CX2697_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 CX2697+STABILITY: SURFACE MOTION
 CX2697_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 CX2697+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 CX2697
 CX2697  HISTORY     - Date     Condition        Report By
 CX2697  HISTORY     - 1934     MONUMENTED       CGS
 CX2697  HISTORY     - 20210309 GOOD             MDSHA
 CX2697
 CX2697                          STATION DESCRIPTION
 CX2697
 CX2697'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 CX2697'THE MARK IS LOCATED ABOUT 2.9 MI (4.7 KM) WEST OF WYE MILLS, 2.8 MI
 CX2697'(4.5 KM) SOUTHWEST OF SCOTTOWN AND IN THE TOWN OF CARMICHAEL, MD.
 CX2697'
 CX2697'TO REACH FROM THE JUNCTION OF US 50 AND CARMICHAEL ROAD, GO SOUTH ON
 CX2697'CARMICHAEL ROAD FOR 2.7 MI (4.3 KM) TO THE MARK ON THE LEFT.
 CX2697'
 CX2697'IT IS 99.2 FT (30.2 M) SOUTHEAST OF A HISTORIC SIGH READING STAGWELL,
 CX2697'44.5 FT (13.6 M) NORTHEAST OF UTILITY POLE NUMBER DPL 31783/14066,
 CX2697'14.0 FT (4.3 M) EAST OF THE EAST EDGE OF CARMICHAEL ROAD AND SET IN
 CX2697'THE TOP OF A 12-IN (30 CM) SQUARE CONCRETE POST.
 CX2697'
 CX2697'THE MARK LEANS SLIGHTLY TO THE WEST, BUT IS SOLID AND IN GOOD
 CX2697'CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6425 ***********************************************************************
 HV6425  DESIGNATION -  DOG
 HV6425  PID         -  HV6425
 HV6425  STATE/COUNTY-  MD/DORCHESTER
 HV6425  COUNTRY     -  US
 HV6425  USGS QUAD   -  HONGA (2016)
 HV6425
 HV6425                         *CURRENT SURVEY CONTROL
 HV6425  ______________________________________________________________________
 HV6425* NAD 83(1991) POSITION- 38 18 30.02094(N) 076 13 30.54049(W)   ADJUSTED
 HV6425* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6425  ______________________________________________________________________
 HV6425  GEOID HEIGHT    -        -35.165 (meters)                     GEOID18
 HV6425  LAPLACE CORR    -         -5.70  (seconds)                    DEFLEC18
 HV6425  HORZ ORDER      -  THIRD
 HV6425
 HV6425.The horizontal coordinates were established by classical geodetic methods
 HV6425.and adjusted by the National Geodetic Survey in January 1992.
 HV6425
 HV6425.The orthometric height was scaled from a topographic map.
 HV6425
 HV6425.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6425.GEOID18 height accuracy estimate available here.
 HV6425
 HV6425.Click photographs - Photos may exist for this station.
 HV6425
 HV6425.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6425
 HV6425. The following values were computed from the NAD 83(1991) position.
 HV6425
 HV6425;                    North         East     Units Scale Factor Converg.
 HV6425;SPC MD       -    71,516.134   467,770.118   MT  0.99999856   +0 29 10.8
 HV6425;SPC MD       -   234,632.52  1,534,675.80   sFT  0.99999856   +0 29 10.8
 HV6425;UTM  18      - 4,240,736.760   392,885.116   MT  0.99974130   -0 45 34.3
 HV6425
 HV6425!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6425!SPC MD       -   1.00000540  x   0.99999856  =   1.00000396
 HV6425!UTM  18      -   1.00000540  x   0.99974130  =   0.99974670
 HV6425
 HV6425:                Primary Azimuth Mark                     Grid Az
 HV6425:SPC MD       -  HOOPER ISLAND LIGHTHOUSE                 199 58 06.5
 HV6425:UTM  18      -  HOOPER ISLAND LIGHTHOUSE                 201 12 51.6
 HV6425
 HV6425_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9288540736(NAD 83)
 HV6425
 HV6425|---------------------------------------------------------------------|
 HV6425| PID    Reference Object                     Distance      Geod. Az  |
 HV6425|                                                           dddmmss.s |
 HV6425| CX2702 DOG WM 2                             21.800 METERS 06129     |
 HV6425| HV6662 HOOPER ISLAND LIGHTHOUSE            APPROX. 6.2 KM 2002717.3 |
 HV6425| CX2700 DOG RM 1                              8.570 METERS 24213     |
 HV6425| CX2701 DOG WM 1                             14.160 METERS 35238     |
 HV6425|---------------------------------------------------------------------|
 HV6425
 HV6425                          SUPERSEDED SURVEY CONTROL
 HV6425
 HV6425  NAD 83(1986)-  38 18 30.02036(N)    076 13 30.55731(W) AD(       ) 3
 HV6425  NAD 27      -  38 18 29.57100(N)    076 13 31.76000(W) AD(       ) 3
 HV6425
 HV6425.Superseded values are not recommended for survey control.
 HV6425
 HV6425.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6425.See file dsdata.pdf to determine how the superseded data were derived.
 HV6425
 HV6425_MARKER: DS = TRIANGULATION STATION DISK
 HV6425_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6425_STAMPING: DOG 1929
 HV6425_MARK LOGO: CGS
 HV6425_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6425+STABILITY: SURFACE MOTION
 HV6425
 HV6425  HISTORY     - Date     Condition        Report By
 HV6425  HISTORY     - 1929     MONUMENTED       CGS
 HV6425  HISTORY     - 1942     GOOD             CGS
 HV6425  HISTORY     - 1961     GOOD             CGS
 HV6425  HISTORY     - 1964     GOOD             MDSFC
 HV6425
 HV6425                          STATION DESCRIPTION
 HV6425
 HV6425'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (JS)
 HV6425'THIS STATION IS LOCATED ON A PROMINENT POINT CALLED PONS POINT,
 HV6425'WHICH IS ABOUT 1 MILE NW OF THE BRIDGE CONNECTING FISHING CREEK
 HV6425'AND HOOPER ISLAND, AND 1 MILE E BY S OF THE MOST SOUTHERN TIP OF
 HV6425'BARREN ISLAND.
 HV6425'
 HV6425'THE STATION IS ON THE PROPERTY OF JOHN MEEKIN, AND IS 14 METERS
 HV6425'E OF THE SHORE LINE, 1 METER N OF A FENCE LINE AND 14 METERS S
 HV6425'OF HOUSE.
 HV6425'
 HV6425'THE STATION IS BUILT IN VERY HARD CLAY AND ABOUT 5 FEET ABOVE
 HV6425'HIGH-WATER LINE.
 HV6425'
 HV6425'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6425'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 HV6425'
 HV6425'THE UNDERGROUND MARK IS A BLOCK OF CONCRETE BELOW THE GROUND
 HV6425'CONTAINING A GLASS BOTTLE AS DESCRIBED IN NOTE 7D.
 HV6425'
 HV6425'WITNESS MARK NO.1 IS A BRICK CHIMNEY.
 HV6425'
 HV6425'WITNESS MARK NO.2 IS A LARGE TREE.
 HV6425'
 HV6425'IT IS UNCERTAN WHETHER THE DISTANCES GIVEN ARE IN METERS OR FEET.
 HV6425
 HV6425                          STATION RECOVERY (1942)
 HV6425
 HV6425'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6425'THE FOLLOWING DISCREPANCY WAS NOTED IN THE ORIGINAL DESCRIPTION--
 HV6425'
 HV6425'(1) THE MARK IS 26 FEET E OF THE SHORELINE, NOT 14 METERS.
 HV6425'
 HV6425'THE STATION IS LOCATED ON A PROMINENT POINT ON THE EASTERN
 HV6425'SHORE OF CHESAPEAKE BAY KNOWN AS PONS POINT.  THIS POINT IS ABOUT
 HV6425'1 MILE NW OF THE BRIDGE CONNECTING FISHING CREEK AND HOOPER
 HV6425'ISLAND.  THE STATION IS ON THE PROPERTY OF JOHN MEEKEN AND IS 26
 HV6425'FEET E OF THE SHORELINE AND 46 FEET S OF WITNESS MARK NO.1 (A
 HV6425'BRICK CHIMNEY).
 HV6425'
 HV6425'THE STATION IS MARKED BY A BRONZE DISK, STAMPED DOG 1929, SET IN
 HV6425'THE TOP OF A 9-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 2
 HV6425'INCHES ABOVE THE SURFACE OF THE GROUND.  THE STATION IS IN GOOD
 HV6425'CONDITION.
 HV6425'
 HV6425'REFERENCE MARK NO.1 IS LOST.  A THOROUGH SEARCH WHICH INCLUDED
 HV6425'THE CHECKING OF DISTANCE TO THE MARK IN BOTH FEET AND METERS AND
 HV6425'SWINGING OF A COMPLETE CIRCLE, USING THESE DISTANCES AS RADII,
 HV6425'FAILED TO LOCATE THE MARK.
 HV6425'
 HV6425'WITNESS MARK NO.1 (A BRICK CHIMNEY) IS IN GOOD CONDITION,
 HV6425'ALTHOUGH THE HOUSE ON WHICH IT IS LOCATED IS ABANDONED.
 HV6425'
 HV6425'WITNESS MARK NO.2 HAS BEEN DESTROYED.
 HV6425
 HV6425                          STATION RECOVERY (1961)
 HV6425
 HV6425'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6425'STATION MARK RECOVERED IN GOOD CONDITION.  REFERENCE MARK NO. 1
 HV6425'HAS BEEN DESTROYED BY EROSION.  THE PUBLISHED DESCRIPTION IS
 HV6425'ADEQUATE WITH THE FOLLOWING ADDITIONS--STATION IS 10 FT. E OF
 HV6425'EDGE OF BANK, 61.0 FT. W OF SW CORNER OF HOUSE AND 83.5 FT. SW
 HV6425'OF THE NW CORNER.  MONUMENT IS NOW FLUSH WITH THE GROUND.
 HV6425
 HV6425                          STATION RECOVERY (1964)
 HV6425
 HV6425'RECOVERY NOTE BY MARYLAND SHELL FISHERIES COMMISSION 1964
 HV6425'STATION WAS RECOVERED IN VERY GOOD CONDITION ON LAWN OF BROWN
 HV6425'SHINGLE HOUSE.  THE MARK IS ABOUT 1-1/2 IN ABOVE GROUND AND ABOUT
 HV6425'8 FT FROM THE BANK OF SOUTHWESTERLY SIDE OF PROPERTY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4842 ***********************************************************************
 HV4842  DESIGNATION -  DOG PB PP
 HV4842  PID         -  HV4842
 HV4842  STATE/COUNTY-  MD/MONTGOMERY
 HV4842  COUNTRY     -  US
 HV4842  USGS QUAD   -  FALLS CHURCH (2019)
 HV4842
 HV4842                         *CURRENT SURVEY CONTROL
 HV4842  ______________________________________________________________________
 HV4842* NAD 83(1993) POSITION- 38 59 18.61846(N) 077 13 55.66297(W)   ADJUSTED
 HV4842* NAVD 88 ORTHO HEIGHT -    99.    (meters)      325.    (feet) SCALED
 HV4842  ______________________________________________________________________
 HV4842  GEOID HEIGHT    -        -31.733 (meters)                     GEOID18
 HV4842  LAPLACE CORR    -         -0.67  (seconds)                    DEFLEC18
 HV4842  HORZ ORDER      -  SECOND
 HV4842
 HV4842.The horizontal coordinates were established by classical geodetic methods
 HV4842.and adjusted by the National Geodetic Survey in November 1994.
 HV4842
 HV4842.The orthometric height was scaled from a topographic map.
 HV4842
 HV4842.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4842.GEOID18 height accuracy estimate available here.
 HV4842
 HV4842.Click photographs - Photos may exist for this station.
 HV4842
 HV4842.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4842
 HV4842. The following values were computed from the NAD 83(1993) position.
 HV4842
 HV4842;                    North         East     Units Scale Factor Converg.
 HV4842;SPC MD       -   146,755.731   379,889.272   MT  0.99995178   -0 08 44.5
 HV4842;SPC MD       -   481,481.09  1,246,353.39   sFT  0.99995178   -0 08 44.5
 HV4842;SPC VA N     - 2,147,483.671 3,609,842.045   MT  0.99996930   +0 47 28.7
 HV4842;SPC VA N     - 7,045,536.01 11,843,290.11   sFT  0.99996930   +0 47 28.7
 HV4842;UTM  18      - 4,317,870.952   306,674.503   MT  1.00006023   -1 24 17.3
 HV4842
 HV4842!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4842!SPC MD       -   0.99998948  x   0.99995178  =   0.99994126
 HV4842!SPC VA N     -   0.99998948  x   0.99996930  =   0.99995878
 HV4842!UTM  18      -   0.99998948  x   1.00006023  =   1.00004971
 HV4842
 HV4842:                Primary Azimuth Mark                     Grid Az
 HV4842:SPC MD       -  DIFFICULT                                214 45 52.3
 HV4842:SPC VA N     -  DIFFICULT                                213 49 39.1
 HV4842:UTM  18      -  DIFFICULT                                216 01 25.1
 HV4842
 HV4842_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0667417870(NAD 83)
 HV4842
 HV4842|---------------------------------------------------------------------|
 HV4842| PID    Reference Object                     Distance      Geod. Az  |
 HV4842|                                                           dddmmss.s |
 HV4842| HV4811 DIFFICULT                           APPROX. 1.3 KM 2143707.8 |
 HV4842|---------------------------------------------------------------------|
 HV4842
 HV4842                          SUPERSEDED SURVEY CONTROL
 HV4842
 HV4842  NAD 83(1991)-  38 59 18.61793(N)    077 13 55.66457(W) AD(       ) 2
 HV4842  NAD 83(1986)-  38 59 18.61795(N)    077 13 55.67370(W) AD(       ) 2
 HV4842  NAD 27      -  38 59 18.21900(N)    077 13 56.74200(W) AD(       ) 2
 HV4842
 HV4842.Superseded values are not recommended for survey control.
 HV4842
 HV4842.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4842.See file dsdata.pdf to determine how the superseded data were derived.
 HV4842
 HV4842_MARKER: DD = SURVEY DISK
 HV4842_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV4842_MARK LOGO: PBPP
 HV4842_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4842
 HV4842  HISTORY     - Date     Condition        Report By
 HV4842  HISTORY     - 1930     MONUMENTED       PBPP
 HV4842  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV4842
 HV4842                          STATION DESCRIPTION
 HV4842
 HV4842'DESCRIBED BY PUB BLDGS AND PARKS 1930
 HV4842'STATION IS LOCATED ON MARYLAND SIDE OF THE POTOMAC RIVER ON THE
 HV4842'SE CORNER OF A WIDE FLAT HILL, NNE OF WIDE WATER (THE CHESAPEAKE
 HV4842'AND OHIO CANAL FEEDER).  STATION IS SURROUNDED ON THREE SIDES, N,
 HV4842'E, AND W, BY A CLUMP OF 30-FOOT PINES.
 HV4842'
 HV4842'STATION IS MARKED WITH A STANDARD P.B. AND P.P. BRASS DISK SET
 HV4842'IN 24-INCH TERRA COTTA PIPE FILLED WITH CONCRETE.  THE UNDERGROUND
 HV4842'MARK IS A 40-PENNY NAIL SET IN 8 INCHES OF CONCRETE.
 HV4842'
 HV4842'AZIMUTH MARK IS A STANDARD BRONZE DISK SET IN A TERRA COTTA
 HV4842'PIPE FILLED WITH CONCRETE.
 HV4842'
 HV4842'ENTRANCE TO STATION GAINED BY TURNING W OF CONDUIT ROAD AT A
 HV4842'POINT 0.4 MILE N OF ROAD MARKER 2 M. TO G.F. AND CONTINUING SW
 HV4842'ON THIS DIRT ROAD 0.3 MILE TO STATION.
 HV4842
 HV4842                          STATION RECOVERY (2000)
 HV4842
 HV4842'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV4842'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7928 ***********************************************************************
 HV7928  DESIGNATION -  DOLAN 2
 HV7928  PID         -  HV7928
 HV7928  STATE/COUNTY-  MD/DORCHESTER
 HV7928  COUNTRY     -  US
 HV7928  USGS QUAD   -  HUDSON (2016)
 HV7928
 HV7928                         *CURRENT SURVEY CONTROL
 HV7928  ______________________________________________________________________
 HV7928* NAD 83(1991) POSITION- 38 34 24.28957(N) 076 18 09.75794(W)   ADJUSTED
 HV7928* NAVD 88 ORTHO HEIGHT -     0.72  (+/-2cm)        2.4   (feet) VERTCON3
 HV7928  ______________________________________________________________________
 HV7928  GEOID HEIGHT    -        -34.503 (meters)                     GEOID18
 HV7928  LAPLACE CORR    -         -4.55  (seconds)                    DEFLEC18
 HV7928  HORZ ORDER      -  SECOND
 HV7928  VERT ORDER      -  THIRD (See Below)
 HV7928
 HV7928.The horizontal coordinates were established by classical geodetic methods
 HV7928.and adjusted by the National Geodetic Survey in January 1992.
 HV7928
 HV7928.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7928.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7928
 HV7928.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7928.GEOID18 height accuracy estimate available here.
 HV7928
 HV7928.The vertical order pertains to the NGVD 29 superseded value.
 HV7928
 HV7928.Click photographs - Photos may exist for this station.
 HV7928
 HV7928.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7928
 HV7928. The following values were computed from the NAD 83(1991) position.
 HV7928
 HV7928;                    North         East     Units Scale Factor Converg.
 HV7928;SPC MD       -   100,884.536   460,761.902   MT  0.99996370   +0 26 15.5
 HV7928;SPC MD       -   330,985.35  1,511,683.01   sFT  0.99996370   +0 26 15.5
 HV7928;UTM  18      - 4,270,244.048   386,519.605   MT  0.99975859   -0 48 44.5
 HV7928
 HV7928!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7928!SPC MD       -   1.00000530  x   0.99996370  =   0.99996900
 HV7928!UTM  18      -   1.00000530  x   0.99975859  =   0.99976389
 HV7928
 HV7928_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8651970244(NAD 83)
 HV7928
 HV7928|---------------------------------------------------------------------|
 HV7928| PID    Reference Object                     Distance      Geod. Az  |
 HV7928|                                                           dddmmss.s |
 HV7928| HV7930 DOLAN 2 RM 5                         11.643 METERS 01004     |
 HV7928| HV0261 DOLAN RM 1                          224.672 METERS 10320     |
 HV7928| HV0262 DOLAN                                32.337 METERS 14410     |
 HV7928| HV7929 DOLAN 2 RM 4                         11.655 METERS 26712     |
 HV7928|---------------------------------------------------------------------|
 HV7928
 HV7928                          SUPERSEDED SURVEY CONTROL
 HV7928
 HV7928  NAD 83(1986)-  38 34 24.28739(N)    076 18 09.77302(W) AD(       ) 2
 HV7928  NGVD 29 (??/??/??)    0.95   (m)            3.1    (f) RESET       3  
 HV7928  NGVD 29               0.95   (m)            3.1    (f) LEVELING    3  
 HV7928
 HV7928.Superseded values are not recommended for survey control.
 HV7928
 HV7928.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7928.See file dsdata.pdf to determine how the superseded data were derived.
 HV7928
 HV7928_MARKER: DH = HORIZONTAL CONTROL DISK
 HV7928_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7928_STAMPING: DOLAN 2 1981
 HV7928_MARK LOGO: NGS
 HV7928_PROJECTION: PROJECTING
 HV7928_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV7928_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7928+STABILITY: SURFACE MOTION
 HV7928
 HV7928  HISTORY     - Date     Condition        Report By
 HV7928  HISTORY     - 1981     MONUMENTED       NGS
 HV7928  HISTORY     - 1984     GOOD             NGS
 HV7928
 HV7928                          STATION DESCRIPTION
 HV7928
 HV7928'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 HV7928'3.3 KM (5.25 MI) SW FROM HUDSON.
 HV7928'11.05 KM (6.85 MI) WEST ALONG STATE HIGHWAY 343 FROM ITS JUNCTION WITH
 HV7928'U.S. HIGHWAY 50 IN CAMBRIDGE, TO THE LLOYDS FIRE STATION, THENCE WEST
 HV7928'ON STATE HIGHWAY 343 FOR 8.6 KM (5.35 MI) TO THE SPEEDENS CHURCH ON
 HV7928'THE LEFT, THENCE RIGHT, SOUTHWEST ON HILLS POINT ROAD FOR 3.1 KM
 HV7928'(1.9 MI) TO A FORK, THENCE RIGHT AND GO WEST ON HILLS POINTROAD FOR
 HV7928'1.3 KM (0.85 MI) TO THE MARK ON THE RIGHT IN A WOODED AREA,0.15 KM
 HV7928'(0.1 MI) WEST OF A TWO STORY FRAME HOUSE, 12.2 METERS (40.0FT) NORTH
 HV7928'OF THE CENTER OF THE ROAD, 7.6 METERS (25.0 FT) WEST OF THE WEST
 HV7928'EDGE OF A CULTIVATED FIELD, 2.1 METERS (7.0 FT) EAST OF THE CENTER
 HV7928'OF A DIM WOODS ROAD, AND 2.0 (6.5 FT) SOUTH OF A 12-INCH PINE TREE.
 HV7928'THE MARK IS 8.5 FT  NNW FROM A WITNESS POST.
 HV7928
 HV7928                          STATION RECOVERY (1984)
 HV7928
 HV7928'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HV7928'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7929 ***********************************************************************
 HV7929  DESIGNATION -  DOLAN 2 RM 4
 HV7929  PID         -  HV7929
 HV7929  STATE/COUNTY-  MD/DORCHESTER
 HV7929  COUNTRY     -  US
 HV7929  USGS QUAD   -  HUDSON (2016)
 HV7929
 HV7929                         *CURRENT SURVEY CONTROL
 HV7929  ______________________________________________________________________
 HV7929* NAD 83(1991) POSITION- 38 34 24.27107(N) 076 18 10.23886(W)   ADJUSTED
 HV7929* NAVD 88 ORTHO HEIGHT -     0.70  (+/-2cm)        2.3   (feet) VERTCON3
 HV7929  ______________________________________________________________________
 HV7929  GEOID HEIGHT    -        -34.502 (meters)                     GEOID18
 HV7929  LAPLACE CORR    -         -4.54  (seconds)                    DEFLEC18
 HV7929  HORZ ORDER      -  THIRD
 HV7929  VERT ORDER      -  THIRD (See Below)
 HV7929
 HV7929.The horizontal coordinates were established by classical geodetic methods
 HV7929.and adjusted by the National Geodetic Survey in January 1992.
 HV7929
 HV7929.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7929.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7929
 HV7929.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7929.GEOID18 height accuracy estimate available here.
 HV7929
 HV7929.The vertical order pertains to the NGVD 29 superseded value.
 HV7929
 HV7929.Click photographs - Photos may exist for this station.
 HV7929
 HV7929.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7929
 HV7929. The following values were computed from the NAD 83(1991) position.
 HV7929
 HV7929;                    North         East     Units Scale Factor Converg.
 HV7929;SPC MD       -   100,883.877   460,750.266   MT  0.99996370   +0 26 15.2
 HV7929;SPC MD       -   330,983.19  1,511,644.83   sFT  0.99996370   +0 26 15.2
 HV7929;UTM  18      - 4,270,243.642   386,507.960   MT  0.99975862   -0 48 44.8
 HV7929
 HV7929!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7929!SPC MD       -   1.00000530  x   0.99996370  =   0.99996900
 HV7929!UTM  18      -   1.00000530  x   0.99975862  =   0.99976392
 HV7929
 HV7929_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8650770243(NAD 83)
 HV7929
 HV7929                          SUPERSEDED SURVEY CONTROL
 HV7929
 HV7929  NAD 83(1986)-  38 34 24.26889(N)    076 18 10.25394(W) AD(       ) 3
 HV7929  NGVD 29 (??/??/??)    0.94   (m)            3.1    (f) RESET       3  
 HV7929  NGVD 29               0.93   (m)            3.1    (f) LEVELING    3  
 HV7929
 HV7929.Superseded values are not recommended for survey control.
 HV7929
 HV7929.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7929.See file dsdata.pdf to determine how the superseded data were derived.
 HV7929
 HV7929_MARKER: DR = REFERENCE MARK DISK
 HV7929_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7929_STAMPING: DOLAN 2 NO 4 1981
 HV7929_MARK LOGO: NGS
 HV7929_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV7929_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7929+STABILITY: SURFACE MOTION
 HV7929
 HV7929  HISTORY     - Date     Condition        Report By
 HV7929  HISTORY     - 1981     MONUMENTED       NGS
 HV7929  HISTORY     - 1984     GOOD             NGS
 HV7929
 HV7929                          STATION DESCRIPTION
 HV7929
 HV7929'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 HV7929'3.3 KM (5.25 MI) SW FROM HUDSON.
 HV7929'11.05 KM (6.85 MI) WEST ALONG STATE HIGHWAY 343 FROM ITS JUNCTION WITH
 HV7929'U.S. HIGHWAY 50 IN CAMBRIDGE, TO THE LLOYDS FIRE STATION, THENCE WEST
 HV7929'ON STATE HIGHWAY 343 FOR 8.6 KM (5.35 MI) TO THE SPEEDENS CHURCH
 HV7929'ON THE LEFT, THENCE RIGHT, SOUTHWEST ON HILLS POINT ROAD FOR 3.1 KM
 HV7929'(1.9 MI) TO A FORK, THENCE RIGHT, AND GO WEST ON HILLS POINT ROAD
 HV7929'FOR 1.0 KM (0.6 MI) TO A FORK, THENCE LEFT, WEST ON HILLS POINT ROAD
 HV7929'FOR 1.3 KM (0.85 MI) TO THE MARKER ON THE RIGHT IN A WOODEDAREA, 0.15
 HV7929'KM (0.1 MI) WEST OF A TWO STORY FRAME HOUSE, 27.1 METERS ( 89.0 FT)
 HV7929'NORTH OF THE CENTER OF THE CENTER OF THE EAST-WEST ROAD, 9.8 METERS
 HV7929'(32.0 FT) EAST OF THE CENTER OF A WOODS ROAD LEADING NORTHWEST, AND
 HV7929'7.6 METERS (25.0 FT) WEST OF THE WEST EDGE OF A CULTIVATED FIELD.
 HV7929
 HV7929                          STATION RECOVERY (1984)
 HV7929
 HV7929'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HV7929'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7930 ***********************************************************************
 HV7930  DESIGNATION -  DOLAN 2 RM 5
 HV7930  PID         -  HV7930
 HV7930  STATE/COUNTY-  MD/DORCHESTER
 HV7930  COUNTRY     -  US
 HV7930  USGS QUAD   -  HUDSON (2016)
 HV7930
 HV7930                         *CURRENT SURVEY CONTROL
 HV7930  ______________________________________________________________________
 HV7930* NAD 83(1991) POSITION- 38 34 24.66135(N) 076 18 09.67393(W)   ADJUSTED
 HV7930* NAVD 88 ORTHO HEIGHT -     0.61  (+/-2cm)        2.0   (feet) VERTCON3
 HV7930  ______________________________________________________________________
 HV7930  GEOID HEIGHT    -        -34.503 (meters)                     GEOID18
 HV7930  LAPLACE CORR    -         -4.55  (seconds)                    DEFLEC18
 HV7930  HORZ ORDER      -  THIRD
 HV7930  VERT ORDER      -  THIRD (See Below)
 HV7930
 HV7930.The horizontal coordinates were established by classical geodetic methods
 HV7930.and adjusted by the National Geodetic Survey in January 1992.
 HV7930
 HV7930.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7930.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7930
 HV7930.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7930.GEOID18 height accuracy estimate available here.
 HV7930
 HV7930.The vertical order pertains to the NGVD 29 superseded value.
 HV7930
 HV7930.Click photographs - Photos may exist for this station.
 HV7930
 HV7930.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7930
 HV7930. The following values were computed from the NAD 83(1991) position.
 HV7930
 HV7930;                    North         East     Units Scale Factor Converg.
 HV7930;SPC MD       -   100,896.015   460,763.848   MT  0.99996369   +0 26 15.6
 HV7930;SPC MD       -   331,023.01  1,511,689.39   sFT  0.99996369   +0 26 15.6
 HV7930;UTM  18      - 4,270,255.479   386,521.801   MT  0.99975858   -0 48 44.4
 HV7930
 HV7930!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7930!SPC MD       -   1.00000532  x   0.99996369  =   0.99996901
 HV7930!UTM  18      -   1.00000532  x   0.99975858  =   0.99976390
 HV7930
 HV7930_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8652170255(NAD 83)
 HV7930
 HV7930                          SUPERSEDED SURVEY CONTROL
 HV7930
 HV7930  NAD 83(1986)-  38 34 24.65918(N)    076 18 09.68901(W) AD(       ) 3
 HV7930  NGVD 29 (??/??/??)    0.85   (m)            2.8    (f) RESET       3  
 HV7930  NGVD 29               0.85   (m)            2.8    (f) LEVELING    3  
 HV7930
 HV7930.Superseded values are not recommended for survey control.
 HV7930
 HV7930.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7930.See file dsdata.pdf to determine how the superseded data were derived.
 HV7930
 HV7930_MARKER: DR = REFERENCE MARK DISK
 HV7930_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7930_STAMPING: DOLAN 2 NO 5 1981
 HV7930_MARK LOGO: NGS
 HV7930_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV7930_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7930+STABILITY: SURFACE MOTION
 HV7930
 HV7930  HISTORY     - Date     Condition        Report By
 HV7930  HISTORY     - 1981     MONUMENTED       NGS
 HV7930  HISTORY     - 1984     GOOD             NGS
 HV7930
 HV7930                          STATION DESCRIPTION
 HV7930
 HV7930'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 HV7930'3.3 KM (5.25 MI) SW FROM HUDSON.
 HV7930'11.05 KM (6.85 MI) WEST ALONG STATE HIGHWAY 343 FROM ITS JUNCTION WITH
 HV7930'U.S. HIGHWAY 50 IN CAMBRIDGE, TO THE LLOYDS FIRE STATION, THENCE WEST
 HV7930'ON STATE HIGHWAY 343 FOR 8.6 KM (5.35 MI) TO THE SPEEDENS CHURCH
 HV7930'ON THE LEFT, THENCE RIGHT, SOUTHWEST ON HILLS POINT ROAD FOR 3.1 KM
 HV7930'(1.9 MI) TO A FORK, THENCE RIGHT, AND GO WEST ON HILLS POINT ROAD FOR
 HV7930'1.3 KM (0.85 MI) TO THE MARKER ON RIGHT IN A WOODED AREA, 0.15 KM
 HV7930'(0.1 MI) WEST OF A TWO STORY FRAME HOUSE, 12.1 METERS (39.7FT)
 HV7930'WEST-SOUTHWEST OF A 12-INCH PINE TREE, 9.1 METERS (30.0 FT)
 HV7930'WEST-SOUTHWEST OF THE CENTER OF THE WOODS ROAD LEADING NORTHWEST
 HV7930'AND 6.1 METERS (20.0 FT) NORTH OF THE CENTER OF THE EAST-WEST ROAD.
 HV7930'THE MARK IS 40.0 FT  WSW FROM A WITNESS POST.
 HV7930
 HV7930                          STATION RECOVERY (1984)
 HV7930
 HV7930'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HV7930'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0261 ***********************************************************************
 HV0261  DESIGNATION -  DOLAN RM 1
 HV0261  PID         -  HV0261
 HV0261  STATE/COUNTY-  MD/DORCHESTER
 HV0261  COUNTRY     -  US
 HV0261  USGS QUAD   -  HUDSON (2016)
 HV0261
 HV0261                         *CURRENT SURVEY CONTROL
 HV0261  ______________________________________________________________________
 HV0261* NAD 83(1991) POSITION- 38 34 22.60950(N) 076 18 00.72667(W)   ADJUSTED
 HV0261* NAVD 88 ORTHO HEIGHT -     0.530 (meters)        1.74  (feet) ADJUSTED
 HV0261  ______________________________________________________________________
 HV0261  GEOID HEIGHT    -        -34.509 (meters)                     GEOID18
 HV0261  LAPLACE CORR    -         -4.56  (seconds)                    DEFLEC18
 HV0261  DYNAMIC HEIGHT  -          0.529 (meters)        1.74  (feet) COMP
 HV0261  MODELED GRAVITY -    980,028.3   (mgal)                       NAVD 88
 HV0261
 HV0261  HORZ ORDER      -  THIRD
 HV0261  VERT ORDER      -  SECOND    CLASS 0
 HV0261
 HV0261.The horizontal coordinates were established by classical geodetic methods
 HV0261.and adjusted by the National Geodetic Survey in January 1992.
 HV0261
 HV0261.The orthometric height was determined by differential leveling and
 HV0261.adjusted by the NATIONAL GEODETIC SURVEY
 HV0261.in June 1991.
 HV0261
 HV0261.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0261.GEOID18 height accuracy estimate available here.
 HV0261
 HV0261.Click photographs - Photos may exist for this station.
 HV0261
 HV0261.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0261
 HV0261.The dynamic height is computed by dividing the NAVD 88
 HV0261.geopotential number by the normal gravity value computed on the
 HV0261.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0261.degrees latitude (g = 980.6199 gals.).
 HV0261
 HV0261.The modeled gravity was interpolated from observed gravity values.
 HV0261
 HV0261. The following values were computed from the NAD 83(1991) position.
 HV0261
 HV0261;                    North         East     Units Scale Factor Converg.
 HV0261;SPC MD       -   100,834.407   460,980.902   MT  0.99996374   +0 26 21.2
 HV0261;SPC MD       -   330,820.88  1,512,401.51   sFT  0.99996374   +0 26 21.2
 HV0261;UTM  18      - 4,270,189.164   386,737.415   MT  0.99975798   -0 48 38.8
 HV0261
 HV0261!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0261!SPC MD       -   1.00000533  x   0.99996374  =   0.99996907
 HV0261!UTM  18      -   1.00000533  x   0.99975798  =   0.99976331
 HV0261
 HV0261_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8673770189(NAD 83)
 HV0261
 HV0261                          SUPERSEDED SURVEY CONTROL
 HV0261
 HV0261  NAD 83(1986)-  38 34 22.60732(N)    076 18 00.74178(W) AD(       ) 3
 HV0261  NGVD 29 (02/24/95)    0.762  (m)            2.50   (f) ADJUSTED    2 0
 HV0261  NGVD 29               0.77   (m)            2.5    (f) LEVELING    3  
 HV0261  NGVD 29 (11/26/84)    0.767  (m)            2.52   (f) SUPERSEDED  2 0
 HV0261
 HV0261.Superseded values are not recommended for survey control.
 HV0261
 HV0261.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0261.See file dsdata.pdf to determine how the superseded data were derived.
 HV0261
 HV0261_MARKER: DR = REFERENCE MARK DISK
 HV0261_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0261_STAMPING: DOLAN NO 1 1934
 HV0261_MARK LOGO: CGS
 HV0261_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0261_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0261+STABILITY: SURFACE MOTION
 HV0261
 HV0261  HISTORY     - Date     Condition        Report By
 HV0261  HISTORY     - 1934     MONUMENTED       CGS
 HV0261  HISTORY     - 1942     GOOD             CGS
 HV0261  HISTORY     - 1981     GOOD             NGS
 HV0261
 HV0261                          STATION DESCRIPTION
 HV0261
 HV0261'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0261'14.5 MI NW FROM CAMBRIDGE.
 HV0261'ON HILLS POINT, 13.8 MILES NORTHWEST OF THE PILGRIM CHURCH IN
 HV0261'CAMBRIDGE, ABOUT 125 YARDS EAST OF THE MOST WESTERLY HOUSE ON THE
 HV0261'POINT, 50 FEET NORTH OF THE CENTER OF THE ROAD, 11.8 FEET WEST
 HV0261'OF THE WEST SIDE OF A PIG LOT, 15 FEET SOUTH OF THE MOST WESTERLY
 HV0261'OF TWO 10 INCH PINE TREES, AND SET IN THE TOP OF A CONCRETE POST.
 HV0261'A STANDARD DISK.  NOTE-- THE STAMPING ON THE LOWER HALF OF THIS
 HV0261'DISK IS NOT CLEAR AND CANNOT BE READ DUE TO THE CONCRETE AND
 HV0261'CORROSION ON THE DISK.
 HV0261
 HV0261                          STATION RECOVERY (1981)
 HV0261
 HV0261'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HV0261'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 5O AND STATE HIGHWAY
 HV0261'343 IN CAMBRIDGE, GO WEST ON STATE HIGHWAY 343 FOR 11.05 KM (6.85 MI)
 HV0261'TO THE LLOYDS FIRE HALL. CONTINUE SOUTHWEST ON STATE HIGHWAY 343 FOR
 HV0261'8.6 KM (5.35 MI) TO THE SPEEDENS CHURCH. BEAR RIGHT AND GO SOUTHWEST
 HV0261'ON HILLS POINT ROAD FOR 3.1 KM (1.9 MI) TO A FORK. KEEP LEFT AND GO
 HV0261'WEST ON HILLS POINT ROAD FOR 1.0 KM (0.6 MI) TO A FORK. KEEP LEFT AND
 HV0261'GO WEST ON HILLS POINT ROAD FOR 1.1 KM (0.7 MI) TO THE MARK ON THE
 HV0261'RIGHT. IT IS 70.7 METERS (232.0 FT) EAST-NORTHEAST OF THE NORTHEAST
 HV0261'CORNER OF A TWO STORY FRAME HOUSE, 38.1 METERS (125.0 FT) NORTH OF
 HV0261'THE SHORE LINE AND 15.5 METERS (51 FT) NORTH OF THE CENTER OF THE
 HV0261'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4240 ***********************************************************************
 JV4240  DESIGNATION -  DOLLY
 JV4240  PID         -  JV4240
 JV4240  STATE/COUNTY-  MD/FREDERICK
 JV4240  COUNTRY     -  US
 JV4240  USGS QUAD   -  LIBERTYTOWN (2016)
 JV4240
 JV4240                         *CURRENT SURVEY CONTROL
 JV4240  ______________________________________________________________________
 JV4240* NAD 83(1991) POSITION- 39 28 43.91690(N) 077 12 12.11258(W)   ADJUSTED
 JV4240* NAVD 88 ORTHO HEIGHT -   171.    (meters)      561.    (feet) SCALED
 JV4240  ______________________________________________________________________
 JV4240  GEOID HEIGHT    -        -32.354 (meters)                     GEOID18
 JV4240  LAPLACE CORR    -          4.86  (seconds)                    DEFLEC18
 JV4240  HORZ ORDER      -  SECOND
 JV4240
 JV4240.The horizontal coordinates were established by classical geodetic methods
 JV4240.and adjusted by the National Geodetic Survey in January 1992.
 JV4240
 JV4240.The orthometric height was scaled from a topographic map.
 JV4240
 JV4240.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4240.GEOID18 height accuracy estimate available here.
 JV4240
 JV4240.Click photographs - Photos may exist for this station.
 JV4240
 JV4240.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4240
 JV4240. The following values were computed from the NAD 83(1991) position.
 JV4240
 JV4240;                    North         East     Units Scale Factor Converg.
 JV4240;SPC MD       -   201,187.963   382,502.543   MT  1.00000518   -0 07 39.5
 JV4240;SPC MD       -   660,064.18  1,254,927.09   sFT  1.00000518   -0 07 39.5
 JV4240;UTM  18      - 4,372,236.416   310,490.475   MT  1.00004219   -1 24 04.7
 JV4240
 JV4240!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4240!SPC MD       -   0.99997828  x   1.00000518  =   0.99998346
 JV4240!UTM  18      -   0.99997828  x   1.00004219  =   1.00002047
 JV4240
 JV4240:                Primary Azimuth Mark                     Grid Az
 JV4240:SPC MD       -  DOLLY AZ MK                              094 20 59.8
 JV4240:UTM  18      -  DOLLY AZ MK                              095 37 25.0
 JV4240
 JV4240_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1049072236(NAD 83)
 JV4240
 JV4240|---------------------------------------------------------------------|
 JV4240| PID    Reference Object                     Distance      Geod. Az  |
 JV4240|                                                           dddmmss.s |
 JV4240| CJ9674 DOLLY AZ MK                                        0941320.3 |
 JV4240| CJ9675 DOLLY RM 1                           19.190 METERS 14904     |
 JV4240| CJ9676 DOLLY RM 2                           22.150 METERS 22525     |
 JV4240|---------------------------------------------------------------------|
 JV4240
 JV4240                          SUPERSEDED SURVEY CONTROL
 JV4240
 JV4240  NAD 83(1986)-  39 28 43.91741(N)    077 12 12.12000(W) AD(       ) 2
 JV4240  NAD 27      -  39 28 43.55200(N)    077 12 13.19100(W) AD(       ) 2
 JV4240
 JV4240.Superseded values are not recommended for survey control.
 JV4240
 JV4240.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4240.See file dsdata.pdf to determine how the superseded data were derived.
 JV4240
 JV4240_MARKER: DS = TRIANGULATION STATION DISK
 JV4240_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4240_STAMPING: DOLLY 1943
 JV4240_MARK LOGO: CGS
 JV4240_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4240+STABILITY: SURFACE MOTION
 JV4240
 JV4240  HISTORY     - Date     Condition        Report By
 JV4240  HISTORY     - 1943     MONUMENTED       CGS
 JV4240
 JV4240                          STATION DESCRIPTION
 JV4240
 JV4240'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4240'THE STATION IS LOCATED ABOUT 2 MILES E AND 1/2 MILE S OF
 JV4240'LIBERTYTOWN, ON N BANK OF LIBERTY ROAD.  IT IS 3 FEET S OF FENCE
 JV4240'LINE AND 25 FEET N OF CENTER OF STATE HIGHWAY 26.  IT IS STAMPED
 JV4240'DOLLY 1942 AND PROJECTS 4 INCHES.
 JV4240'
 JV4240'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE BRONZE DISKS SET
 JV4240'IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 JV4240'
 JV4240'REFERENCE MARK NO.1 IS SE OF THE STATION ACROSS HIGHWAY 26, 28
 JV4240'FEET S OF THE CENTER OF THE ROAD AND 6 FEET E OF A TELEPHONE
 JV4240'POLE NUMBERED F2167.  IT PROJECTS 4 INCHES AND IS STAMPED DOLLY
 JV4240'NO.1 1942.
 JV4240'
 JV4240'REFERENCE MARK NO.2 IS SW OF THE STATION ACROSS THE HIGHWAY, 27
 JV4240'FEET S OF THE CENTER OF HIGHWAY 26 AND ABOUT 30 FEET W OF THE
 JV4240'CENTER OF A DIRT ROAD LEADING S.  IT PROJECTS 4 INCHES AND IS
 JV4240'STAMPED DOLLY NO.2 1942.
 JV4240'
 JV4240'THE AZIMUTH MARK IS 0.2 MILE E OF THE STATION ON THE S SIDE OF
 JV4240'STATE HIGHWAY 26.  IT IS ABOUT 100 FEET NW OF EMORY BIDDINGERS
 JV4240'HOUSE, 18 FEET S OF CENTER OF HIGHWAY 26, SET FLUSH IN A CONCRETE
 JV4240'CULVERT.  IT IS STAMPED DOLLY 1942 AND IS MARKED BY A 4- BY 4-INCH
 JV4240'WHITE POST.
 JV4240'
 JV4240'TO REACH THE STATION FROM THE INTERSECTION OF STATE ROUTES 26
 JV4240'AND 27 AT THE VILLAGE OF TAYLORSVILLE GO WESTERLY ON HIGHWAY
 JV4240'26 FOR 5.6 MILES TO VILLAGE OF UNIONVILLE.  CONTINUE ON HIGHWAY
 JV4240'26 FOR 1.1 MILES TO DIRT T-ROAD LEADING LEFT (S) AND STATION ON
 JV4240'ROAD BANK TO RIGHT.
 JV4240'
 JV4240'NOTE--THIS STATION WAS MARKED IN 1942 AND LOCATED IN 1943.
 JV4240'
 JV4240'A 4-FOOT STAND WILL SEE A 113-FOOT LIGHT AT TAYLOR.
 JV4240'
 JV4240'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT MOUNT AIRY.
 JV4240'
 JV4240'A 4-FOOT STAND WILL SEE A 74-FOOT LIGHT AT LIBERTY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3148 ***********************************************************************
 DI3148  DESIGNATION -  DOLVIN 1
 DI3148  PID         -  DI3148
 DI3148  STATE/COUNTY-  MD/TALBOT
 DI3148  COUNTRY     -  US
 DI3148  USGS QUAD   -  WYE MILLS (2016)
 DI3148
 DI3148                         *CURRENT SURVEY CONTROL
 DI3148  ______________________________________________________________________
 DI3148* NAD 83(2011) POSITION- 38 56 00.01105(N) 076 03 44.78338(W)   ADJUSTED
 DI3148* NAD 83(2011) ELLIP HT-   -16.658 (meters)        (06/27/12)   ADJUSTED
 DI3148* NAD 83(2011) EPOCH   -  2010.00
 DI3148* NAVD 88 ORTHO HEIGHT -    17.6   (meters)       58.    (feet) GPS OBS
 DI3148  ______________________________________________________________________
 DI3148  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3148  GEOID HEIGHT    -        -34.223 (meters)                     GEOID03
 DI3148  GEOID HEIGHT    -        -34.264 (meters)                     GEOID18
 DI3148  NAD 83(2011) X  -  1,196,606.446 (meters)                     COMP
 DI3148  NAD 83(2011) Y  - -4,821,705.421 (meters)                     COMP
 DI3148  NAD 83(2011) Z  -  3,986,552.462 (meters)                     COMP
 DI3148  LAPLACE CORR    -         -4.01  (seconds)                    DEFLEC18
 DI3148
 DI3148  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3148  Standards:
 DI3148         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3148            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3148  -------------------------------------------------------------------
 DI3148  NETWORK    0.70   0.96           0.31   0.26   0.49      0.02016736
 DI3148  -------------------------------------------------------------------
 DI3148  Click here for local accuracies and other accuracy information.
 DI3148
 DI3148.The horizontal coordinates were established by GPS observations
 DI3148.and adjusted by the National Geodetic Survey in June 2012.
 DI3148
 DI3148.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3148.been affixed to the stable North American tectonic plate. See 
 DI3148.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3148
 DI3148.The horizontal coordinates are valid at the epoch date displayed above
 DI3148.which is a decimal equivalence of Year/Month/Day.
 DI3148
 DI3148.The orthometric height was determined by GPS observations and a
 DI3148.high-resolution geoid model.
 DI3148
 DI3148.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3148.GEOID18 height accuracy estimate available here.
 DI3148
 DI3148.Click photographs - Photos may exist for this station.
 DI3148
 DI3148.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3148
 DI3148.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3148
 DI3148.The ellipsoidal height was determined by GPS observations
 DI3148.and is referenced to NAD 83.
 DI3148
 DI3148. The following values were computed from the NAD 83(2011) position.
 DI3148
 DI3148;                    North         East     Units Scale Factor Converg.
 DI3148;SPC MD       -   141,023.351   481,288.157   MT  0.99995035   +0 35 18.4
 DI3148;SPC MD       -   462,674.11  1,579,026.23   sFT  0.99995035   +0 35 18.4
 DI3148;UTM  18      - 4,309,915.456   407,914.085   MT  0.99970442   -0 40 03.7
 DI3148
 DI3148!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3148!SPC MD       -   1.00000261  x   0.99995035  =   0.99995296
 DI3148!UTM  18      -   1.00000261  x   0.99970442  =   0.99970703
 DI3148
 DI3148:                Primary Azimuth Mark                     Grid Az
 DI3148:SPC MD       -  DOLVIN 2                                 178 23 21.6
 DI3148:UTM  18      -  DOLVIN 2                                 179 38 43.7
 DI3148
 DI3148_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0791409915(NAD 83)
 DI3148
 DI3148|---------------------------------------------------------------------|
 DI3148| PID    Reference Object                     Distance      Geod. Az  |
 DI3148|                                                           dddmmss.s |
 DI3148| DI3149 DOLVIN 2                            436.978 METERS 1785840.0 |
 DI3148|---------------------------------------------------------------------|
 DI3148
 DI3148                          SUPERSEDED SURVEY CONTROL
 DI3148
 DI3148  NAD 83(1991)-  38 56 00.01111(N)    076 03 44.78430(W) AD(       ) 1
 DI3148  ELLIP H (01/05/07)  -16.603  (m)                       GP(       ) 4 2
 DI3148
 DI3148.Superseded values are not recommended for survey control.
 DI3148
 DI3148.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3148.See file dsdata.pdf to determine how the superseded data were derived.
 DI3148
 DI3148_MARKER: DD = SURVEY DISK
 DI3148_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3148_STAMPING: DOLVIN 1
 DI3148_PROJECTION: FLUSH
 DI3148_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3148_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3148+STABILITY: SURFACE MOTION
 DI3148_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3148+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3148
 DI3148  HISTORY     - Date     Condition        Report By
 DI3148  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3148
 DI3148                          STATION DESCRIPTION
 DI3148
 DI3148'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3148'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR WYE MILLS,
 DI3148'MARYLAND.  IT IS  ABOUT 10.6 MI (17.1 KM) NORTH OF EASTON, MARYLAND,
 DI3148'ABOUT 25.5 MI (41.0 KM) NORTH OF  CAMBRIDGE, MARYLAND AND ABOUT 1.0 MI
 DI3148'(1.6 KM) SOUTHEAST OF WYE MILLS, MARYLAND.
 DI3148'
 DI3148'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 404 (QUEEN
 DI3148'ANNE HIGHWAY)  PROCEED SOUTHEAST ON US RTE 50 FOR 0.4 MI (0.6 KM) TO
 DI3148'THE STATION IN THE MEDIAN.
 DI3148'
 DI3148'STATION IS 5.4 FT (1.6 M) EAST OF THE EAST EDGE OF US RTE 50
 DI3148'EASTBOUND,  17.2 FT (5.2 M) WEST OF  THE WEST EDGE OF US RTE 50
 DI3148'WESTBOUND AND 88.3 FT (27.0 M) SOUTH OF SIGNAL AHEAD SIGN.  A  3 IN
 DI3148'BRASS DISK STAMPED DOLVIN 1 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE
 DI3148'MONUMENT FLUSH  WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3149 ***********************************************************************
 DI3149  DESIGNATION -  DOLVIN 2
 DI3149  PID         -  DI3149
 DI3149  STATE/COUNTY-  MD/TALBOT
 DI3149  COUNTRY     -  US
 DI3149  USGS QUAD   -  WYE MILLS (2016)
 DI3149
 DI3149                         *CURRENT SURVEY CONTROL
 DI3149  ______________________________________________________________________
 DI3149* NAD 83(2011) POSITION- 38 55 45.84286(N) 076 03 44.45973(W)   ADJUSTED
 DI3149* NAD 83(2011) ELLIP HT-   -14.897 (meters)        (06/27/12)   ADJUSTED
 DI3149* NAD 83(2011) EPOCH   -  2010.00
 DI3149* NAVD 88 ORTHO HEIGHT -    19.4   (meters)       64.    (feet) GPS OBS
 DI3149  ______________________________________________________________________
 DI3149  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3149  GEOID HEIGHT    -        -34.237 (meters)                     GEOID03
 DI3149  GEOID HEIGHT    -        -34.278 (meters)                     GEOID18
 DI3149  NAD 83(2011) X  -  1,196,680.471 (meters)                     COMP
 DI3149  NAD 83(2011) Y  - -4,821,971.337 (meters)                     COMP
 DI3149  NAD 83(2011) Z  -  3,986,213.699 (meters)                     COMP
 DI3149  LAPLACE CORR    -         -4.00  (seconds)                    DEFLEC18
 DI3149
 DI3149  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3149  Standards:
 DI3149         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3149            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3149  -------------------------------------------------------------------
 DI3149  NETWORK    0.69   0.94           0.31   0.25   0.48      0.02010334
 DI3149  -------------------------------------------------------------------
 DI3149  Click here for local accuracies and other accuracy information.
 DI3149
 DI3149.The horizontal coordinates were established by GPS observations
 DI3149.and adjusted by the National Geodetic Survey in June 2012.
 DI3149
 DI3149.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3149.been affixed to the stable North American tectonic plate. See 
 DI3149.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3149
 DI3149.The horizontal coordinates are valid at the epoch date displayed above
 DI3149.which is a decimal equivalence of Year/Month/Day.
 DI3149
 DI3149.The orthometric height was determined by GPS observations and a
 DI3149.high-resolution geoid model.
 DI3149
 DI3149.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3149.GEOID18 height accuracy estimate available here.
 DI3149
 DI3149.Click photographs - Photos may exist for this station.
 DI3149
 DI3149.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3149
 DI3149.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3149
 DI3149.The ellipsoidal height was determined by GPS observations
 DI3149.and is referenced to NAD 83.
 DI3149
 DI3149. The following values were computed from the NAD 83(2011) position.
 DI3149
 DI3149;                    North         East     Units Scale Factor Converg.
 DI3149;SPC MD       -   140,586.568   481,300.439   MT  0.99995028   +0 35 18.6
 DI3149;SPC MD       -   461,241.10  1,579,066.52   sFT  0.99995028   +0 35 18.6
 DI3149;UTM  18      - 4,309,478.616   407,916.788   MT  0.99970441   -0 40 03.3
 DI3149
 DI3149!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3149!SPC MD       -   1.00000234  x   0.99995028  =   0.99995262
 DI3149!UTM  18      -   1.00000234  x   0.99970441  =   0.99970675
 DI3149
 DI3149:                Primary Azimuth Mark                     Grid Az
 DI3149:SPC MD       -  DOLVIN 1                                 358 23 21.6
 DI3149:UTM  18      -  DOLVIN 1                                 359 38 43.5
 DI3149
 DI3149_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0791609478(NAD 83)
 DI3149
 DI3149|---------------------------------------------------------------------|
 DI3149| PID    Reference Object                     Distance      Geod. Az  |
 DI3149|                                                           dddmmss.s |
 DI3149| DI3148 DOLVIN 1                            436.978 METERS 3585840.2 |
 DI3149|---------------------------------------------------------------------|
 DI3149
 DI3149                          SUPERSEDED SURVEY CONTROL
 DI3149
 DI3149  NAD 83(1991)-  38 55 45.84293(N)    076 03 44.46065(W) AD(       ) 1
 DI3149  ELLIP H (01/05/07)  -14.841  (m)                       GP(       ) 4 2
 DI3149
 DI3149.Superseded values are not recommended for survey control.
 DI3149
 DI3149.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3149.See file dsdata.pdf to determine how the superseded data were derived.
 DI3149
 DI3149_MARKER: DD = SURVEY DISK
 DI3149_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3149_STAMPING: DOLVIN 2
 DI3149_PROJECTION: FLUSH
 DI3149_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3149_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3149+STABILITY: SURFACE MOTION
 DI3149_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3149+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3149
 DI3149  HISTORY     - Date     Condition        Report By
 DI3149  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3149
 DI3149                          STATION DESCRIPTION
 DI3149
 DI3149'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3149'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR WYE MILLS,
 DI3149'MARYLAND.  IT IS ABOUT  10.5 MI (16.9 KM) NORTH OF EASTON, MARYLAND,
 DI3149'ABOUT 25.2 MI (40.5 KM) NORTH OF CAMBRIDGE,  MARYLAND AND ABOUT 1.0 MI
 DI3149'(1.6 KM) SOUTHEAST OF WYE MILLS, MARYLAND.
 DI3149'
 DI3149'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 404 (QUEEN
 DI3149'ANNE HIGHWAY)  PROCEED SOUTHEAST ON US RTE 50 FOR 0.7 MI (1.1 KM) TO
 DI3149'THE STATION IN THE MEDIAN.
 DI3149'
 DI3149'STATION IS 8.7 FT (2.6 M) EAST OF THE EAST EDGE OF US RTE 50 EASTBOUND
 DI3149'AND 14.5 FT (4.4 M)  WEST OF THE WEST EDGE OF US RTE 50 WESTBOUND.  3
 DI3149'IN BRASS DISK STAMPED DOLVIN 2 SET IN  THE TOP OF A 1 FT (0.3 M)
 DI3149'CONCRETE MONUMENT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0985 ***********************************************************************
 JV0985  DESIGNATION -  DOMOKE
 JV0985  PID         -  JV0985
 JV0985  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0985  COUNTRY     -  US
 JV0985  USGS QUAD   -  BELTSVILLE (2016)
 JV0985
 JV0985                         *CURRENT SURVEY CONTROL
 JV0985  ______________________________________________________________________
 JV0985* NAD 83(1991) POSITION- 39 00 06.98262(N) 076 53 48.77869(W)   ADJUSTED
 JV0985* NAVD 88 ORTHO HEIGHT -    50.907 (meters)      167.02  (feet) ADJUSTED
 JV0985  ______________________________________________________________________
 JV0985  GEOID HEIGHT    -        -32.213 (meters)                     GEOID18
 JV0985  LAPLACE CORR    -         -4.85  (seconds)                    DEFLEC18
 JV0985  DYNAMIC HEIGHT  -         50.880 (meters)      166.93  (feet) COMP
 JV0985  MODELED GRAVITY -    980,096.3   (mgal)                       NAVD 88
 JV0985
 JV0985  HORZ ORDER      -  SECOND
 JV0985  VERT ORDER      -  SECOND    CLASS 0
 JV0985
 JV0985.The horizontal coordinates were established by classical geodetic methods
 JV0985.and adjusted by the National Geodetic Survey in January 1992.
 JV0985
 JV0985.The orthometric height was determined by differential leveling and
 JV0985.adjusted by the NATIONAL GEODETIC SURVEY
 JV0985.in June 1991.
 JV0985
 JV0985.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0985.GEOID18 height accuracy estimate available here.
 JV0985
 JV0985.Click photographs - Photos may exist for this station.
 JV0985
 JV0985.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0985
 JV0985.The dynamic height is computed by dividing the NAVD 88
 JV0985.geopotential number by the normal gravity value computed on the
 JV0985.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0985.degrees latitude (g = 980.6199 gals.).
 JV0985
 JV0985.The modeled gravity was interpolated from observed gravity values.
 JV0985
 JV0985. The following values were computed from the NAD 83(1991) position.
 JV0985
 JV0985;                    North         East     Units Scale Factor Converg.
 JV0985;SPC MD       -   148,226.570   408,931.985   MT  0.99995226   +0 03 53.0
 JV0985;SPC MD       -   486,306.67  1,341,637.69   sFT  0.99995226   +0 03 53.0
 JV0985;UTM  18      - 4,318,703.368   335,743.756   MT  0.99993223   -1 11 38.6
 JV0985
 JV0985!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0985!SPC MD       -   0.99999707  x   0.99995226  =   0.99994933
 JV0985!UTM  18      -   0.99999707  x   0.99993223  =   0.99992930
 JV0985
 JV0985:                Primary Azimuth Mark                     Grid Az
 JV0985:SPC MD       -  DISPOSE                                  025 21 22.8
 JV0985:UTM  18      -  DISPOSE                                  026 36 54.4
 JV0985
 JV0985_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3574318703(NAD 83)
 JV0985
 JV0985|---------------------------------------------------------------------|
 JV0985| PID    Reference Object                     Distance      Geod. Az  |
 JV0985|                                                           dddmmss.s |
 JV0985| JV5937 BELTSVILLE DA RSCH CTR N TANK       APPROX. 4.2 KM 0252352.0 |
 JV0985| JV0987 DISPOSE                             APPROX. 0.7 KM 0252515.8 |
 JV0985| JV0986 DOMOKE RM 1                          17.420 METERS 10642     |
 JV0985| JV0984 DOMOKE RM 2                          18.105 METERS 20222     |
 JV0985|---------------------------------------------------------------------|
 JV0985
 JV0985                          SUPERSEDED SURVEY CONTROL
 JV0985
 JV0985  NAD 83(1986)-  39 00 06.98116(N)    076 53 48.78951(W) AD(       ) 2
 JV0985  NAD 27      -  39 00 06.58362(N)    076 53 49.88565(W) AD(       ) 2
 JV0985  NGVD 29              51.14   (m)          167.8    (f) LEVELING    3  
 JV0985  NGVD 29 (11/26/84)   51.139  (m)          167.78   (f) ADJUSTED    2 0
 JV0985
 JV0985.Superseded values are not recommended for survey control.
 JV0985
 JV0985.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0985.See file dsdata.pdf to determine how the superseded data were derived.
 JV0985
 JV0985_MARKER: DS = TRIANGULATION STATION DISK
 JV0985_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0985_STAMPING: DOMOKE 1958
 JV0985_MARK LOGO: CGS
 JV0985_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0985+STABILITY: SURFACE MOTION
 JV0985
 JV0985  HISTORY     - Date     Condition        Report By
 JV0985  HISTORY     - 1958     MONUMENTED       CGS
 JV0985  HISTORY     - 1958     GOOD             CGS
 JV0985  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 JV0985  HISTORY     - 19910627 MARK NOT FOUND   USPSQD
 JV0985
 JV0985                          STATION DESCRIPTION
 JV0985
 JV0985'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0985'STATION IS LOCATED ABOUT 11.0 MILES NORTHEAST OF THE CENTER OF
 JV0985'WASHINGTON, 2 MILES SOUTHEAST OF BELTSVILLE, 2 MILES NORTHEAST OF
 JV0985'COLLEGE PARK, AND AT THE WEST EDGE OF THE TOWN OF GREENBELT.
 JV0985'STATION IS 86 FEET NORTHWEST FROM FRONT STEPS OF HOUSE, 49-1/2 FEET
 JV0985'NORTH NORTH-WEST FROM A 8 INCH PERSIMMON TREE, 71 FEET NORTH
 JV0985'NORTH-EAST FROM POWER-LINE POLE.  THE MARK IS SET FLUSH AND THE
 JV0985'DISK IS STAMPED DOMOKE 1958.
 JV0985'
 JV0985'REFERENCE MARK NO. 1 IS 68 FEET NORTHWEST FROM THE NORTHEAST CORNER
 JV0985'OF HOUSE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED DOMOKE NO 1
 JV0985'1958.
 JV0985'
 JV0985'REFERENCE MARK NO. 2 IS 22 FEET NORTH OF DRIVEWAY, 22 FEET SOUTHWEST
 JV0985'FROM A PERSIMMON TREE, 30 FEET WEST NORTH-WEST FROM POWER-LINE
 JV0985'POLE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED DOMOKE NO 2
 JV0985'1958.
 JV0985'
 JV0985'TO REACH FROM A POINT ON U.S. HIGHWAY NO. 1, OPPOSITE THE RAILROAD
 JV0985'STATION IN BELTSVILLE, GO SOUTH ON U.S. HIGHWAY NO. 1 FOR 0.1 MILE,
 JV0985'HERE TURN LEFT OVER BRIDGE AND GO EAST FOR 0.5 MILE TO FORK, KEEP
 JV0985'RIGHT AND GO SOUTHERLY 2.0 MILES TO A DIAGONALLY CROSS ROADS (AT
 JV0985'DISPOSAL PLANT ON RIGHT), CONTINUE SOUTH ON SURFACED ROAD FOR 0.3
 JV0985'MILE TO DRIVEWAY ON LEFT, TURN LEFT AND GO 0.05 MILE TO STATION ON
 JV0985'LEFT AS DESCRIBED.  IS NOT VG AT PRESENT, BUT WILL BE AS SOON AS
 JV0985'RIGHTWAY IS CLEARED FOR NEW HIGHWAY.
 JV0985'
 JV0985'TRAVERSE STATION DISPOSE IS LOCATED 0.1 MILE NORTH OF GREENBELT
 JV0985'DISPOSAL PLANT.  AND AT THE NORTH EDGE OF PISTOL RANGE.
 JV0985'
 JV0985'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV0985
 JV0985                          STATION RECOVERY (1958)
 JV0985
 JV0985'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV0985'0.4 MI NE FROM GREENBELT.
 JV0985'ABOUT 0.4 MILE NORTHEAST ALONG EDMONSTON AVENUE FROM THE INTERSECTION
 JV0985'OF KENILWORTH AVENUE AT GREENBELT, ABOUT 150 YARDS EAST OF THE
 JV0985'AVENUE, ON THE PROPERTY OF MRS. DOMOKE, 84.8 FEET NORTHWEST OF
 JV0985'THE NORTHWEST CORNER OF A SMALL WHITE FRAME HOUSE, 72 1/2 FEET
 JV0985'NORTHEAST OF POWER LINE POLE NO. 828102, SET IN THE TOP OF A
 JV0985'CONCRETE POST FLUSH WITH THE GROUND.
 JV0985
 JV0985                          STATION RECOVERY (1983)
 JV0985
 JV0985'RECOVERY NOTE BY US POWER SQUADRON 1983 (RKM)
 JV0985'DOMOKE NOT RECOVERED.
 JV0985'
 JV0985'PLOT ON COUNTY MAP SHOWS LOCATION WITHIN CLOVERLEAF OF I-495 + RT
 JV0985'201.  ON SITE SEARCH SHOWED NO REFERENCES EXISTING.
 JV0985'
 JV0985'PRESUME MARKER DESTROYED.
 JV0985'
 JV0985'DEMOKE NO 1 AND NO 2 NR.
 JV0985
 JV0985                          STATION RECOVERY (1991)
 JV0985
 JV0985'RECOVERY NOTE BY US POWER SQUADRON 1991 (WAY)
 JV0985'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0986 ***********************************************************************
 JV0986  DESIGNATION -  DOMOKE RM 1
 JV0986  PID         -  JV0986
 JV0986  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0986  COUNTRY     -  US
 JV0986  USGS QUAD   -  BELTSVILLE (2016)
 JV0986
 JV0986                         *CURRENT SURVEY CONTROL
 JV0986  ______________________________________________________________________
 JV0986* NAD 83(1986) POSITION- 39 00 06.82   (N) 076 53 48.08   (W)   HD_HELD1
 JV0986* NAVD 88 ORTHO HEIGHT -    51.031 (meters)      167.42  (feet) ADJUSTED
 JV0986  ______________________________________________________________________
 JV0986  GEOID HEIGHT    -        -32.213 (meters)                     GEOID18
 JV0986  DYNAMIC HEIGHT  -         51.004 (meters)      167.34  (feet) COMP
 JV0986  MODELED GRAVITY -    980,096.3   (mgal)                       NAVD 88
 JV0986
 JV0986  VERT ORDER      -  SECOND    CLASS 0
 JV0986
 JV0986.The horizontal coordinates were determined by differentially corrected
 JV0986.hand held GPS observations or other comparable positioning techniques
 JV0986.and have an estimated accuracy of +/- 3 meters.
 JV0986
 JV0986.The orthometric height was determined by differential leveling and
 JV0986.adjusted by the NATIONAL GEODETIC SURVEY
 JV0986.in June 1991.
 JV0986
 JV0986.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0986.GEOID18 height accuracy estimate available here.
 JV0986
 JV0986.Click photographs - Photos may exist for this station.
 JV0986
 JV0986.The dynamic height is computed by dividing the NAVD 88
 JV0986.geopotential number by the normal gravity value computed on the
 JV0986.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0986.degrees latitude (g = 980.6199 gals.).
 JV0986
 JV0986.The modeled gravity was interpolated from observed gravity values.
 JV0986
 JV0986;                    North         East    Units  Estimated Accuracy
 JV0986;SPC MD       -   148,221.6     408,948.8     MT  (+/- 3 meters HH1 GPS) 
 JV0986
 JV0986_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3576018698(NAD 83)
 JV0986
 JV0986                          SUPERSEDED SURVEY CONTROL
 JV0986
 JV0986  NGVD 29 (11/26/84)   51.263  (m)          168.19   (f) ADJUSTED    2 0
 JV0986
 JV0986.Superseded values are not recommended for survey control.
 JV0986
 JV0986.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0986.See file dsdata.pdf to determine how the superseded data were derived.
 JV0986
 JV0986_MARKER: DR = REFERENCE MARK DISK
 JV0986_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0986_STAMPING: DOMOKE NO 1 1958
 JV0986_MARK LOGO: CGS
 JV0986_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0986+STABILITY: SURFACE MOTION
 JV0986
 JV0986  HISTORY     - Date     Condition        Report By
 JV0986  HISTORY     - 1958     MONUMENTED       CGS
 JV0986
 JV0986                          STATION DESCRIPTION
 JV0986
 JV0986'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0986'0.4 MI NE FROM GREENBELT.
 JV0986'ABOUT 0.4 MILE NORTHEAST ALONG EDMONOSTON AVENUE FROM THE
 JV0986'INTERSECTION OF KENILWORTH AVENUE AT GREENBELT, ABOUT 150 YARDS
 JV0986'EAST OF THE AVENUE, 57.4 FEET EAST OF THE STATION AND SET IN THE
 JV0986'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0984 ***********************************************************************
 JV0984  DESIGNATION -  DOMOKE RM 2
 JV0984  PID         -  JV0984
 JV0984  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0984  COUNTRY     -  US
 JV0984  USGS QUAD   -  BELTSVILLE (2016)
 JV0984
 JV0984                         *CURRENT SURVEY CONTROL
 JV0984  ______________________________________________________________________
 JV0984* NAD 83(1986) POSITION- 39 00 06.44   (N) 076 53 49.07   (W)   HD_HELD1
 JV0984* NAVD 88 ORTHO HEIGHT -    50.834 (meters)      166.78  (feet) ADJUSTED
 JV0984  ______________________________________________________________________
 JV0984  GEOID HEIGHT    -        -32.213 (meters)                     GEOID18
 JV0984  DYNAMIC HEIGHT  -         50.807 (meters)      166.69  (feet) COMP
 JV0984  MODELED GRAVITY -    980,096.3   (mgal)                       NAVD 88
 JV0984
 JV0984  VERT ORDER      -  SECOND    CLASS 0
 JV0984
 JV0984.The horizontal coordinates were determined by differentially corrected
 JV0984.hand held GPS observations or other comparable positioning techniques
 JV0984.and have an estimated accuracy of +/- 3 meters.
 JV0984
 JV0984.The orthometric height was determined by differential leveling and
 JV0984.adjusted by the NATIONAL GEODETIC SURVEY
 JV0984.in June 1991.
 JV0984
 JV0984.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0984.GEOID18 height accuracy estimate available here.
 JV0984
 JV0984.Click photographs - Photos may exist for this station.
 JV0984
 JV0984.The dynamic height is computed by dividing the NAVD 88
 JV0984.geopotential number by the normal gravity value computed on the
 JV0984.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0984.degrees latitude (g = 980.6199 gals.).
 JV0984
 JV0984.The modeled gravity was interpolated from observed gravity values.
 JV0984
 JV0984;                    North         East    Units  Estimated Accuracy
 JV0984;SPC MD       -   148,209.8     408,925.0     MT  (+/- 3 meters HH1 GPS) 
 JV0984
 JV0984_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3573618686(NAD 83)
 JV0984
 JV0984                          SUPERSEDED SURVEY CONTROL
 JV0984
 JV0984  NGVD 29 (11/26/84)   51.067  (m)          167.54   (f) ADJUSTED    2 0
 JV0984
 JV0984.Superseded values are not recommended for survey control.
 JV0984
 JV0984.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0984.See file dsdata.pdf to determine how the superseded data were derived.
 JV0984
 JV0984_MARKER: DR = REFERENCE MARK DISK
 JV0984_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0984_STAMPING: DOMOKE NO 2 1958
 JV0984_MARK LOGO: CGS
 JV0984_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0984+STABILITY: SURFACE MOTION
 JV0984
 JV0984  HISTORY     - Date     Condition        Report By
 JV0984  HISTORY     - 1958     MONUMENTED       CGS
 JV0984
 JV0984                          STATION DESCRIPTION
 JV0984
 JV0984'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0984'0.4 MI NE FROM GREENBELT.
 JV0984'ABOUT 0.4 MILE NORTHEAST ALONG EDMONSTON AVENUE FROM THE INTERSECTION
 JV0984'OF KENILWORTH AVENUE AT GREENBELT, ABOUT 150 YARDS EAST OF THE
 JV0984'AVENUE, 59.5 FEET SOUTH OF THE STATION AND SET IN THE TOP OF A
 JV0984'CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0307 ***********************************************************************
 HV0307  DESIGNATION -  DON
 HV0307  PID         -  HV0307
 HV0307  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0307  COUNTRY     -  US
 HV0307  USGS QUAD   -  ANNAPOLIS (2016)
 HV0307
 HV0307                         *CURRENT SURVEY CONTROL
 HV0307  ______________________________________________________________________
 HV0307* NAD 83(1986) POSITION- 38 58 57.     (N) 076 27 45.     (W)   SCALED
 HV0307* NAVD 88 ORTHO HEIGHT -     2.016 (meters)        6.61  (feet) ADJUSTED
 HV0307  ______________________________________________________________________
 HV0307  GEOID HEIGHT    -        -33.388 (meters)                     GEOID18
 HV0307  DYNAMIC HEIGHT  -          2.015 (meters)        6.61  (feet) COMP
 HV0307  MODELED GRAVITY -    980,076.7   (mgal)                       NAVD 88
 HV0307
 HV0307  VERT ORDER      -  FIRST     CLASS I
 HV0307
 HV0307.The horizontal coordinates were scaled from a map and have
 HV0307.an estimated accuracy of +/- 6 seconds.
 HV0307
 HV0307.The orthometric height was determined by differential leveling and
 HV0307.adjusted by the NATIONAL GEODETIC SURVEY
 HV0307.in June 1991.
 HV0307
 HV0307.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0307.GEOID18 height accuracy estimate available here.
 HV0307
 HV0307.Click photographs - Photos may exist for this station.
 HV0307
 HV0307.The dynamic height is computed by dividing the NAVD 88
 HV0307.geopotential number by the normal gravity value computed on the
 HV0307.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0307.degrees latitude (g = 980.6199 gals.).
 HV0307
 HV0307.The modeled gravity was interpolated from observed gravity values.
 HV0307
 HV0307;                    North         East    Units  Estimated Accuracy
 HV0307;SPC MD       -   146,200.      446,570.      MT  (+/- 180 meters Scaled)
 HV0307
 HV0307_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ733158(NAD 83)
 HV0307
 HV0307                          SUPERSEDED SURVEY CONTROL
 HV0307
 HV0307  NGVD 29 (11/26/84)    2.259  (m)            7.41   (f) ADJUSTED    1 1
 HV0307
 HV0307.Superseded values are not recommended for survey control.
 HV0307
 HV0307.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0307.See file dsdata.pdf to determine how the superseded data were derived.
 HV0307
 HV0307_MARKER: DB = BENCH MARK DISK
 HV0307_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0307_SP_SET: DRAINAGE DITCH HEADWALL
 HV0307_STAMPING: DON 1970
 HV0307_MARK LOGO: CGS
 HV0307_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0307
 HV0307  HISTORY     - Date     Condition        Report By
 HV0307  HISTORY     - 1970     MONUMENTED       NGS
 HV0307  HISTORY     - 1971     GOOD             NGS
 HV0307
 HV0307                          STATION DESCRIPTION
 HV0307
 HV0307'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0307'AT ANNAPOLIS.
 HV0307'AT THE U.S. NAVAL STATION AT ANNPOLIS, ABOUT 0.1 MILE SOUTHWEST
 HV0307'ALONG GILMORE ROAD FROM THE ADMINISTRATION BUILDING, THENCE 0.35
 HV0307'MILE SOUTHWEST ALONG HALLIGAN ROAD, AT THE EAST CORNER OF THE
 HV0307'CONCRETE APRON WHICH WAS FORMERLY USED FOR SEAPLANES, SET IN THE
 HV0307'TOP AND CENTR OF A 4.6- X 5-FOOT CONCRETE HEADWALL FOR A DRAINAGE
 HV0307'DITCH, 22.7 FEET EAST-SOUTHEAST OF THE EAST CORNER OF THE APRON
 HV0307'AND BENCH MARK A 132, 7.5 FEET NORTHEAST OF THE EAST END OF A
 HV0307'CONCRETE SEAWALL, AND ABOUT LEVEL WITH THE APRON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5406 ***********************************************************************
 HV5406  DESIGNATION -  DON
 HV5406  PID         -  HV5406
 HV5406  STATE/COUNTY-  MD/CHARLES
 HV5406  COUNTRY     -  US
 HV5406  USGS QUAD   -  NANJEMOY (2016)
 HV5406
 HV5406                         *CURRENT SURVEY CONTROL
 HV5406  ______________________________________________________________________
 HV5406* NAD 83(1993) POSITION- 38 29 53.50242(N) 077 12 36.18094(W)   ADJUSTED
 HV5406* NAVD 88 ORTHO HEIGHT -    45.    (meters)      148.    (feet) SCALED
 HV5406  ______________________________________________________________________
 HV5406  GEOID HEIGHT    -        -32.622 (meters)                     GEOID18
 HV5406  LAPLACE CORR    -         -2.28  (seconds)                    DEFLEC18
 HV5406  HORZ ORDER      -  SECOND
 HV5406
 HV5406.The horizontal coordinates were established by classical geodetic methods
 HV5406.and adjusted by the National Geodetic Survey in November 1994.
 HV5406
 HV5406.The orthometric height was scaled from a topographic map.
 HV5406
 HV5406.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5406.GEOID18 height accuracy estimate available here.
 HV5406
 HV5406.Click photographs - Photos may exist for this station.
 HV5406
 HV5406.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5406
 HV5406. The following values were computed from the NAD 83(1993) position.
 HV5406
 HV5406;                    North         East     Units Scale Factor Converg.
 HV5406;SPC MD       -    92,324.058   381,676.817   MT  0.99997144   -0 07 54.6
 HV5406;SPC MD       -   302,899.85  1,252,218.02   sFT  0.99997144   -0 07 54.6
 HV5406;UTM  18      - 4,263,407.595   307,272.643   MT  1.00005744   -1 22 34.2
 HV5406
 HV5406!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5406!SPC MD       -   0.99999809  x   0.99997144  =   0.99996953
 HV5406!UTM  18      -   0.99999809  x   1.00005744  =   1.00005553
 HV5406
 HV5406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH0727263407(NAD 83)
 HV5406
 HV5406                          SUPERSEDED SURVEY CONTROL
 HV5406
 HV5406  NAD 83(1991)-  38 29 53.50284(N)    077 12 36.18690(W) AD(       ) 2
 HV5406  NAD 83(1986)-  38 29 53.50228(N)    077 12 36.19527(W) AD(       ) 2
 HV5406  NAD 27      -  38 29 53.06489(N)    077 12 37.26882(W) AD(       ) 2
 HV5406
 HV5406.Superseded values are not recommended for survey control.
 HV5406
 HV5406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5406.See file dsdata.pdf to determine how the superseded data were derived.
 HV5406
 HV5406_MARKER: DD = SURVEY DISK
 HV5406_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5406_STAMPING: DON 1960
 HV5406_MARK LOGO: MDBCSM
 HV5406_PROJECTION: PROJECTING
 HV5406_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5406+STABILITY: SURFACE MOTION
 HV5406
 HV5406  HISTORY     - Date     Condition        Report By
 HV5406  HISTORY     - 1966     MONUMENTED       CGS
 HV5406
 HV5406                          STATION DESCRIPTION
 HV5406
 HV5406'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 HV5406'THE MARK IS LOCATED ABOUT 9.8 MI (15.8 KM) WEST OF PORT TOBACCO
 HV5406'RIVIERA, 7.5 MI (12.1 KM) SOUTH-SOUTHWEST OF INDIAN HEAD AND 3.0 MI
 HV5406'(4.8 KM) NORTH OF NANJEMOY.
 HV5406'
 HV5406'IT IS 65 FT (19.8 M) WEST OF A POWER POLE AND 21 FT (6.4 M) NORTH OF
 HV5406'THE NORTH EDGE OF THE HIGHWAY 6 CUT-BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5584 ***********************************************************************
 JV5584  DESIGNATION -  DONALDSON HB 1915
 JV5584  PID         -  JV5584
 JV5584  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5584  COUNTRY     -  US
 JV5584  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5584
 JV5584                         *CURRENT SURVEY CONTROL
 JV5584  ______________________________________________________________________
 JV5584* NAD 83(1991) POSITION- 39 15 54.01429(N) 076 37 12.21872(W)   ADJUSTED
 JV5584* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5584  ______________________________________________________________________
 JV5584  GEOID HEIGHT    -        -32.747 (meters)                     GEOID18
 JV5584  LAPLACE CORR    -         -5.46  (seconds)                    DEFLEC18
 JV5584  HORZ ORDER      -  THIRD
 JV5584
 JV5584.The horizontal coordinates were established by classical geodetic methods
 JV5584.and adjusted by the National Geodetic Survey in January 1992.
 JV5584
 JV5584.The orthometric height was scaled from a topographic map.
 JV5584
 JV5584.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5584.GEOID18 height accuracy estimate available here.
 JV5584
 JV5584.Click photographs - Photos may exist for this station.
 JV5584
 JV5584.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5584
 JV5584. The following values were computed from the NAD 83(1991) position.
 JV5584
 JV5584;                    North         East     Units Scale Factor Converg.
 JV5584;SPC MD       -   177,493.500   432,788.661   MT  0.99997287   +0 14 18.5
 JV5584;SPC MD       -   582,326.59  1,419,907.47   sFT  0.99997287   +0 14 18.5
 JV5584;UTM  18      - 4,347,435.792   360,237.147   MT  0.99984051   -1 01 31.9
 JV5584
 JV5584!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5584!SPC MD       -   1.00000470  x   0.99997287  =   0.99997757
 JV5584!UTM  18      -   1.00000470  x   0.99984051  =   0.99984521
 JV5584
 JV5584_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6023747435(NAD 83)
 JV5584
 JV5584                          SUPERSEDED SURVEY CONTROL
 JV5584
 JV5584  NAD 83(1986)-  39 15 54.01079(N)    076 37 12.22763(W) AD(       ) 3
 JV5584  NAD 27      -  39 15 53.62700(N)    076 37 13.33900(W) AD(       ) 3
 JV5584  USSD        -  39 15 53.99100(N)    076 37 13.17700(W) AD(       ) 3
 JV5584
 JV5584.Superseded values are not recommended for survey control.
 JV5584
 JV5584.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5584.See file dsdata.pdf to determine how the superseded data were derived.
 JV5584
 JV5584_MARKER: Z = SEE DESCRIPTION
 JV5584_SETTING: 0 = UNSPECIFIED SETTING
 JV5584_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5584
 JV5584  HISTORY     - Date     Condition        Report By
 JV5584  HISTORY     - 1915     MONUMENTED       LOCENG
 JV5584
 JV5584                          STATION DESCRIPTION
 JV5584
 JV5584'DESCRIBED BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1915 (EWE)
 JV5584'STATION IS ON THE EASTERN SIDE OF MIDDLE BRANCH, PATAPSCO RIVER,
 JV5584'8.12 FEET W OF EASTERN END OF WESTERN MARYLAND RAILROAD BRIDGE,
 JV5584'4.7 FEET S OF THE S RAIL OF THE N TRACK, AND 3.97 FEET N OF THE
 JV5584'N RAIL OF THE S TRACK.  STATION MARK IS A WHITE MARBLE POST, 6
 JV5584'INCHES SQUARE, WITH H.B. CUT IN TOP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5407 ***********************************************************************
 HV5407  DESIGNATION -  DONCASTER
 HV5407  PID         -  HV5407
 HV5407  STATE/COUNTY-  MD/CHARLES
 HV5407  COUNTRY     -  US
 HV5407  USGS QUAD   -  NANJEMOY (2016)
 HV5407
 HV5407                         *CURRENT SURVEY CONTROL
 HV5407  ______________________________________________________________________
 HV5407* NAD 83(1993) POSITION- 38 29 55.93739(N) 077 12 36.64679(W)   ADJUSTED
 HV5407* NAVD 88 ORTHO HEIGHT -    47.9   (meters)      157.    (feet) VERTCON3
 HV5407  ______________________________________________________________________
 HV5407  GEOID HEIGHT    -        -32.620 (meters)                     GEOID18
 HV5407  LAPLACE CORR    -         -2.26  (seconds)                    DEFLEC18
 HV5407  HORZ ORDER      -  FIRST
 HV5407
 HV5407.The horizontal coordinates were established by classical geodetic methods
 HV5407.and adjusted by the National Geodetic Survey in November 1994.
 HV5407
 HV5407.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV5407.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV5407
 HV5407.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5407.GEOID18 height accuracy estimate available here.
 HV5407
 HV5407.Click photographs - Photos may exist for this station.
 HV5407
 HV5407.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5407
 HV5407. The following values were computed from the NAD 83(1993) position.
 HV5407
 HV5407;                    North         East     Units Scale Factor Converg.
 HV5407;SPC MD       -    92,399.164   381,665.702   MT  0.99997136   -0 07 54.9
 HV5407;SPC MD       -   303,146.26  1,252,181.56   sFT  0.99997136   -0 07 54.9
 HV5407;UTM  18      - 4,263,482.931   307,263.161   MT  1.00005749   -1 22 34.5
 HV5407
 HV5407!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5407!SPC MD       -   0.99999761  x   0.99997136  =   0.99996897
 HV5407!UTM  18      -   0.99999761  x   1.00005749  =   1.00005510
 HV5407
 HV5407:                Primary Azimuth Mark                     Grid Az
 HV5407:SPC MD       -  DONCASTER AZ MK                          315 54 49.2
 HV5407:UTM  18      -  DONCASTER AZ MK                          317 09 28.8
 HV5407
 HV5407_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH0726363482(NAD 83)
 HV5407
 HV5407|---------------------------------------------------------------------|
 HV5407| PID    Reference Object                     Distance      Geod. Az  |
 HV5407|                                                           dddmmss.s |
 HV5407| HV5408 DONCASTER RM A                       25.890 METERS 04950     |
 HV5407| HV5406 DON                                  75.926 METERS 17127     |
 HV5407| DC6201 DONCASTER RM 1                       53.712 METERS 28104     |
 HV5407| DC6200 DONCASTER AZ MK                                    3154654.3 |
 HV5407|---------------------------------------------------------------------|
 HV5407
 HV5407                          SUPERSEDED SURVEY CONTROL
 HV5407
 HV5407  NAD 83(1991)-  38 29 55.93782(N)    077 12 36.65276(W) AD(       ) 1
 HV5407  NAD 83(1986)-  38 29 55.93724(N)    077 12 36.66113(W) AD(       ) 1
 HV5407  NAD 27      -  38 29 55.49991(N)    077 12 37.73464(W) AD(       ) 1
 HV5407  NGVD 29 (07/19/86)   48.1    (m)          158.     (f) VERT ANG       
 HV5407
 HV5407.Superseded values are not recommended for survey control.
 HV5407
 HV5407.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5407.See file dsdata.pdf to determine how the superseded data were derived.
 HV5407
 HV5407_MARKER: DS = TRIANGULATION STATION DISK
 HV5407_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5407_STAMPING: DONCASTER 1966
 HV5407_MARK LOGO: CGS
 HV5407_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5407+STABILITY: SURFACE MOTION
 HV5407
 HV5407  HISTORY     - Date     Condition        Report By
 HV5407  HISTORY     - 1966     MONUMENTED       CGS
 HV5407
 HV5407                          STATION DESCRIPTION
 HV5407
 HV5407'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 HV5407'THE STATION IS LOCATED ABOUT 0.05 MILE NORTHEAST OF THE JUNCTION
 HV5407'OF STATE HIGHWAY 6 AND COUNTY ROUTE 344 IN THE VILLAGE OF
 HV5407'DONCASTER, ABOUT 12-1/2 MILES WEST AND 2 MILES SOUTH OF LA PLATA
 HV5407'AND 7 MILES SOUTH AND 2 MILES WEST OF INDIAN HEAD, ON PROPERTY
 HV5407'OWNED BY MR. W.W. LINTON.
 HV5407'
 HV5407'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV5407'STATE HIGHWAY 6 IN LA PLATA, GO WEST ON HIGHWAY 6 FOR 11.45 MILES
 HV5407'TO CROSSROAD (COUNTY ROUTE 425) IN IRONSIDES.  CONTINUE WESTERLY
 HV5407'ON HIGHWAY 6 FOR 3.0 MILES TO CROSSROAD (COUNTY ROUTE 344) IN
 HV5407'VILLAGE OF DONCASTER.  TURN RIGHT, GO NORTH ON ROUTE 344 FOR 50
 HV5407'FEET, THEN BEAR RIGHT PASSING THROUGH A GRAVEL PIT AND UPHILL
 HV5407'FOR 0.05 MILE TO THE STATION ON TOP OF THE HILL.
 HV5407'
 HV5407'THE STATION MARK IS A STANDARD DISK STAMPED DONCASTER 1966, SET
 HV5407'IN TOP OF A CYLINDRICAL CONCRETE POST 12-INCHES IN DIAMETER AND
 HV5407'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 204 FEET EAST OF THE
 HV5407'CENTER OF ROUTE 344, 36 FEET WEST OF A 12-INCH APPLE TREE AND 26.5
 HV5407'FEET NORTH-NORTHEAST OF A 10-INCH PINE TREE.  THE UNDERGROUND
 HV5407'DISK IS SET IN AN IRREGULAR MASS OF CONCRETE 44 INCHES BELOW THE
 HV5407'SURFACE OF THE GROUND.
 HV5407'
 HV5407'REFERENCE MARK NO. 1 IS A STANDARD DISK STAMPED DONCASTER NO 1
 HV5407'1966, SET IN TOP OF A CYLINDRICAL CONCRETE POST 12-INCHES IN
 HV5407'DIAMETER AND PROJECTS 2 INCHES ABOVE THE SURFACE OF THE GROUND.  IT
 HV5407'IS 34 FEET EAST OF THE CENTER OF ROUTE 344, 2 FEET NORTHEAST OF A
 HV5407'METAL WITNESS POST AND 1 FOOT SOUTHEAST OF A POWER POLE.
 HV5407'
 HV5407'THE MARYLAND BUREAU OF CONTROL SURVEY MARK IS USED AS REFERENCE
 HV5407'MARK NUMBER TWO.  IT IS A BRONZE STATION DISK STAMPED DON 1960, SET
 HV5407'IN TOP OF A CYLINDRICAL CONCRETE POST 6-INCHES IN DIAMETER AND
 HV5407'PROJECTS 3 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 65
 HV5407'FEET WEST OF A POWER POLE AND 21 FEET NORTH OF THE NORTH EDGE OF
 HV5407'THE HIGHWAY 6 CUT-BANK.
 HV5407'
 HV5407'THE AZIMUTH MARK IS A STANDARD DISK STAMPED DONCASTER 1966,
 HV5407'CEMENTED IN A DRILL HOLE IN THE HEADWALL OF A CONCRETE CULVERT.  IT
 HV5407'IS 14 FEET SOUTHWEST OF THE CENTER OF ROUTE 344, 1 FOOT
 HV5407'WEST-NORTHWEST OF THE EAST END OF THE CULVERT AND 1 FOOT SOUTHEAST
 HV5407'OF A METAL WITNESS POST.
 HV5407'
 HV5407'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTHERLY ON ROUTE
 HV5407'344 FOR 0.45 MILE TO THE AZIMUTH MARK ON THE LEFT.
 HV5407'
 HV5407'HEIGHT OF LIGHT ABOVE STATION MARK 34.12 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5408 ***********************************************************************
 HV5408  DESIGNATION -  DONCASTER RM A
 HV5408  PID         -  HV5408
 HV5408  STATE/COUNTY-  MD/CHARLES
 HV5408  COUNTRY     -  US
 HV5408  USGS QUAD   -  NANJEMOY (2016)
 HV5408
 HV5408                         *CURRENT SURVEY CONTROL
 HV5408  ______________________________________________________________________
 HV5408* NAD 83(1993) POSITION- 38 29 56.47897(N) 077 12 35.83032(W)   ADJUSTED
 HV5408* NAVD 88 ORTHO HEIGHT -    47.4   (meters)      156.    (feet) VERTCON3
 HV5408  ______________________________________________________________________
 HV5408  GEOID HEIGHT    -        -32.621 (meters)                     GEOID18
 HV5408  LAPLACE CORR    -         -2.27  (seconds)                    DEFLEC18
 HV5408  HORZ ORDER      -  FIRST
 HV5408
 HV5408.The horizontal coordinates were established by classical geodetic methods
 HV5408.and adjusted by the National Geodetic Survey in November 1994.
 HV5408
 HV5408.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV5408.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV5408
 HV5408.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5408.GEOID18 height accuracy estimate available here.
 HV5408
 HV5408.Click photographs - Photos may exist for this station.
 HV5408
 HV5408.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5408
 HV5408. The following values were computed from the NAD 83(1993) position.
 HV5408
 HV5408;                    North         East     Units Scale Factor Converg.
 HV5408;SPC MD       -    92,415.818   381,685.524   MT  0.99997134   -0 07 54.4
 HV5408;SPC MD       -   303,200.90  1,252,246.59   sFT  0.99997134   -0 07 54.4
 HV5408;UTM  18      - 4,263,499.151   307,283.342   MT  1.00005739   -1 22 34.0
 HV5408
 HV5408!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5408!SPC MD       -   0.99999769  x   0.99997134  =   0.99996903
 HV5408!UTM  18      -   0.99999769  x   1.00005739  =   1.00005508
 HV5408
 HV5408:                Primary Azimuth Mark                     Grid Az
 HV5408:SPC MD       -  RESERVOIR 2                              287 38 48.7
 HV5408:UTM  18      -  RESERVOIR 2                              288 53 28.3
 HV5408
 HV5408_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH0728363499(NAD 83)
 HV5408
 HV5408|---------------------------------------------------------------------|
 HV5408| PID    Reference Object                     Distance      Geod. Az  |
 HV5408|                                                           dddmmss.s |
 HV5408| HV5407 DONCASTER                            25.890 METERS 22950     |
 HV5408| HV5088 RESERVOIR 2                         APPROX. 9.8 KM 2873054.3 |
 HV5408|---------------------------------------------------------------------|
 HV5408
 HV5408                          SUPERSEDED SURVEY CONTROL
 HV5408
 HV5408  NAD 83(1991)-  38 29 56.47940(N)    077 12 35.83629(W) AD(       ) 1
 HV5408  NAD 83(1986)-  38 29 56.47893(N)    077 12 35.84450(W) AD(       ) 1
 HV5408  NAD 27      -  38 29 56.04149(N)    077 12 36.91819(W) AD(       ) 1
 HV5408  NGVD 29 (07/19/86)   47.6    (m)          156.     (f) VERT ANG       
 HV5408
 HV5408.Superseded values are not recommended for survey control.
 HV5408
 HV5408.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5408.See file dsdata.pdf to determine how the superseded data were derived.
 HV5408
 HV5408_MARKER: DS = TRIANGULATION STATION DISK
 HV5408_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5408_STAMPING: DONCASTER RM A 1966
 HV5408_MARK LOGO: CGS
 HV5408_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5408+STABILITY: SURFACE MOTION
 HV5408
 HV5408  HISTORY     - Date     Condition        Report By
 HV5408  HISTORY     - 1966     MONUMENTED       CGS
 HV5408
 HV5408                          STATION DESCRIPTION
 HV5408
 HV5408'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 HV5408'THE STATION IS LOCATED 12-1/2 MILES WEST-SOUTHWEST OF LA PLATA, 7
 HV5408'MILES SOUTH-SOUTHWEST OF INDIAN HEAD, 100-YARDS NORTHEAST OF THE
 HV5408'JUNCTION OF STATE HIGHWAYS 6 AND 344, IN THE VILLAGE OF DONCASTER
 HV5408'AND ON PROPERTY OWNED BY MR. W.W. LINTON.
 HV5408'
 HV5408'TO REACH THE STATION SEE DESCRIPTION TO TRIANGULATION STATION
 HV5408'DONCASTER 1966 THEREOF.
 HV5408'
 HV5408'THE STATION MARK IS A STANDARD DISK, STAMPED DONCASTER RM A 1966,
 HV5408'SET IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT THAT IS
 HV5408'18-INCHES BELOW THE GROUND SURFACE.  IT IS 272 FEET EAST OF THE
 HV5408'CENTER OF STATE HIGHWAY 344, 140 FEET SOUTH OF A 24-INCH WALNUT
 HV5408'TREE, 70 FEET NORTHEAST OF A APPLE TREE AND 44.6 FEET SOUTHEAST
 HV5408'OF A 10-INCH WALNUT TREE.
 HV5408'
 HV5408'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION DONCASTER
 HV5408'1966.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7950 ***********************************************************************
 DH7950  DESIGNATION -  DONNIE
 DH7950  PID         -  DH7950
 DH7950  STATE/COUNTY-  MD/SOMERSET
 DH7950  COUNTRY     -  US
 DH7950  USGS QUAD   -  MARION (2016)
 DH7950
 DH7950                         *CURRENT SURVEY CONTROL
 DH7950  ______________________________________________________________________
 DH7950* NAD 83(2011) POSITION- 38 00 21.09449(N) 075 50 20.06870(W)   ADJUSTED
 DH7950* NAD 83(2011) ELLIP HT-   -35.365 (meters)        (02/16/16)   ADJUSTED
 DH7950* NAD 83(2011) EPOCH   -  2010.00
 DH7950* NAVD 88 ORTHO HEIGHT -     0.695 (meters)        2.28  (feet) ADJUSTED
 DH7950  ______________________________________________________________________
 DH7950  GEOID HEIGHT    -        -36.073 (meters)                     GEOID18
 DH7950  NAD 83(2011) X  -  1,231,074.045 (meters)                     COMP
 DH7950  NAD 83(2011) Y  - -4,879,087.091 (meters)                     COMP
 DH7950  NAD 83(2011) Z  -  3,905,934.689 (meters)                     COMP
 DH7950  LAPLACE CORR    -         -1.65  (seconds)                    DEFLEC18
 DH7950  DYNAMIC HEIGHT  -          0.695 (meters)        2.28  (feet) COMP
 DH7950  MODELED GRAVITY -    979,974.5   (mgal)                       NAVD 88
 DH7950
 DH7950  VERT ORDER      -  SECOND    CLASS I
 DH7950
 DH7950  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH7950  Standards:
 DH7950         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH7950            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH7950  -------------------------------------------------------------------
 DH7950  NETWORK    0.54   1.25           0.24   0.19   0.64     -0.19446821
 DH7950  -------------------------------------------------------------------
 DH7950  Click here for local accuracies and other accuracy information.
 DH7950
 DH7950.The horizontal coordinates were established by GPS observations
 DH7950.and adjusted by the ARCHER-SHEE LAND SURVEYING in February 2016.
 DH7950
 DH7950.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH7950.been affixed to the stable North American tectonic plate. See 
 DH7950.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH7950
 DH7950.The horizontal coordinates are valid at the epoch date displayed above
 DH7950.which is a decimal equivalence of Year/Month/Day.
 DH7950
 DH7950.The orthometric height was determined by differential leveling and
 DH7950.adjusted by the NATIONAL GEODETIC SURVEY
 DH7950.in February 2006.
 DH7950
 DH7950.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7950.GEOID18 height accuracy estimate available here.
 DH7950
 DH7950.Click photographs - Photos may exist for this station.
 DH7950
 DH7950.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH7950
 DH7950.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH7950
 DH7950.The ellipsoidal height was determined by GPS observations
 DH7950.and is referenced to NAD 83.
 DH7950
 DH7950.The dynamic height is computed by dividing the NAVD 88
 DH7950.geopotential number by the normal gravity value computed on the
 DH7950.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7950.degrees latitude (g = 980.6199 gals.).
 DH7950
 DH7950.The modeled gravity was interpolated from observed gravity values.
 DH7950
 DH7950. The following values were computed from the NAD 83(2011) position.
 DH7950
 DH7950;                    North         East     Units Scale Factor Converg.
 DH7950;SPC MD       -    38,301.005   501,977.250   MT  1.00006418   +0 43 43.5
 DH7950;SPC MD       -   125,659.21  1,646,903.69   sFT  1.00006418   +0 43 43.5
 DH7950;UTM  18      - 4,206,797.157   426,351.340   MT  0.99966680   -0 30 59.7
 DH7950
 DH7950!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH7950!SPC MD       -   1.00000555  x   1.00006418  =   1.00006973
 DH7950!UTM  18      -   1.00000555  x   0.99966680  =   0.99967235
 DH7950
 DH7950_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2635106797(NAD 83)
 DH7950
 DH7950                          SUPERSEDED SURVEY CONTROL
 DH7950
 DH7950.No superseded survey control is available for this station.
 DH7950
 DH7950_MARKER: DV = VERTICAL CONTROL DISK
 DH7950_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DH7950_STAMPING: DONNIE 2005
 DH7950_MARK LOGO: NGS
 DH7950_PROJECTION: FLUSH
 DH7950_MAGNETIC: N = NO MAGNETIC MATERIAL
 DH7950_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH7950_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7950+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2015
 DH7950
 DH7950  HISTORY     - Date     Condition        Report By
 DH7950  HISTORY     - 2005     MONUMENTED       NGS
 DH7950  HISTORY     - 20080401 GOOD             USACE
 DH7950  HISTORY     - 20150514 GOOD             ARCSHE
 DH7950
 DH7950                          STATION DESCRIPTION
 DH7950
 DH7950'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DH7950'THE STATION IS LOCATED ABOUT 4.4 MI WSW OF MARION, 1.8 MI NNE OF
 DH7950'CRISFIELD AND 1.3 MI WSW OF HOPEWELL.
 DH7950'TO REACH THE STATION FROM THE JUNCTION OF MARYLAND AVENUE,RICHERSON
 DH7950'AVENUE, SOMERSET AVENUE, AND JACKSONVILLE ROAD NEAR THE NORTH CITY
 DH7950'WATER TANK, GO 1.0 MILE (1.60 KM) NORTH ALONG JACKSONVILLE ROAD TO THE
 DH7950'JUNCTION OF ALFRED L. LAWSON ROAD ON THE LEFT AT A WOODEN SIGN FOR
 DH7950'JANES ISLAND STATE PARK, SET ON THE NORTH BACKSIDE OF THE WOODEN
 DH7950'PILLINGS SUPPORTING THE SIGN FOR THE STATE PARK, A NGS VERTICAL DISK
 DH7950'SET IN A 12 INCH CONCRETE POST, 1 INCH BELOW GROUND LEVEL.
 DH7950'58.5 FT (17.8 M) NORTHWEST OF THE CENTERLINE OF JACKSONVILLE ROAD,
 DH7950'63.1 FT (19.2 M) SOUTHWEST OF THE CENTERLINE OF ALFRED L. LAWSON ROAD,
 DH7950'39.5 FT (12.0 M) WEST OF A FIRE HYDRANT, 23.4 FT (13.2 M) NORTH OF
 DH7950'NORTH CORNER OF THE METAL BASE FOR A LAMP POST, AND 1.0 FT (0.3) NORTH
 DH7950'OF THE NORTH WOOD PILING SUPPORTING THE STATE PARK SIGN.
 DH7950
 DH7950                          STATION RECOVERY (2008)
 DH7950
 DH7950'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2008
 DH7950'RECOVERED AS DESCRIBED
 DH7950
 DH7950                          STATION RECOVERY (2015)
 DH7950
 DH7950'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 DH7950'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7329 ***********************************************************************
 HV7329  DESIGNATION -  DONOVAN
 HV7329  PID         -  HV7329
 HV7329  STATE/COUNTY-  MD/CALVERT
 HV7329  COUNTRY     -  US
 HV7329  USGS QUAD   -  BENEDICT (2016)
 HV7329
 HV7329                         *CURRENT SURVEY CONTROL
 HV7329  ______________________________________________________________________
 HV7329* NAD 83(1993) POSITION- 38 32 09.21903(N) 076 37 43.22785(W)   ADJUSTED
 HV7329* NAVD 88 ORTHO HEIGHT -    52.0   (meters)      171.    (feet) VERTCON3
 HV7329  ______________________________________________________________________
 HV7329  GEOID HEIGHT    -        -33.751 (meters)                     GEOID18
 HV7329  LAPLACE CORR    -         -4.06  (seconds)                    DEFLEC18
 HV7329  HORZ ORDER      -  SECOND
 HV7329
 HV7329.The horizontal coordinates were established by classical geodetic methods
 HV7329.and adjusted by the National Geodetic Survey in November 1994.
 HV7329
 HV7329.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7329.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7329
 HV7329.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7329.GEOID18 height accuracy estimate available here.
 HV7329
 HV7329.Click photographs - Photos may exist for this station.
 HV7329
 HV7329.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7329
 HV7329. The following values were computed from the NAD 83(1993) position.
 HV7329
 HV7329;                    North         East     Units Scale Factor Converg.
 HV7329;SPC MD       -    96,553.526   432,374.531   MT  0.99996734   +0 13 59.0
 HV7329;SPC MD       -   316,776.03  1,418,548.77   sFT  0.99996734   +0 13 59.0
 HV7329;UTM  18      - 4,266,533.431   358,049.239   MT  0.99984815   -1 00 53.4
 HV7329
 HV7329!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7329!SPC MD       -   0.99999713  x   0.99996734  =   0.99996447
 HV7329!UTM  18      -   0.99999713  x   0.99984815  =   0.99984528
 HV7329
 HV7329:                Primary Azimuth Mark                     Grid Az
 HV7329:SPC MD       -  CITY                                     238 09 03.2
 HV7329:UTM  18      -  CITY                                     239 23 55.6
 HV7329
 HV7329_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5804966533(NAD 83)
 HV7329
 HV7329|---------------------------------------------------------------------|
 HV7329| PID    Reference Object                     Distance      Geod. Az  |
 HV7329|                                                           dddmmss.s |
 HV7329| CX2707 DONOVAN RM 1                         25.045 METERS 08539     |
 HV7329| HV7319 PRINCE FREDERICK RAD MAST           APPROX. 4.4 KM 0881118.4 |
 HV7329| HV7320 PRINCE FREDERICK RAD WMJS MAST      APPROX. 2.6 KM 1571136.7 |
 HV7329| HV7335 CITY                                APPROX. 4.6 KM 2382302.2 |
 HV7329| CX2708 DONOVAN RM 2                         55.199 METERS 26437     |
 HV7329| HV7353 CHALK PT LARGE GEN STA S STACK      APPROX. 5.1 KM 2791004.5 |
 HV7329| HV7352 CHALK PT LARGE GEN STA N STACK      APPROX. 5.1 KM 2795736.1 |
 HV7329| HV7354 CHALK PT PEPCO MICROWAVE LIGHT      APPROX. 5.8 KM 2964033.6 |
 HV7329| HV7349 CHALK POINT PEPCO MICROWAVE         APPROX. 5.8 KM 2964011.3 |
 HV7329| HV7368 HUNTINGTOWN MICROWAVE TOWER         APPROX.10.0 KM 3560114.3 |
 HV7329|---------------------------------------------------------------------|
 HV7329
 HV7329                          SUPERSEDED SURVEY CONTROL
 HV7329
 HV7329  NAD 83(1991)-  38 32 09.21906(N)    076 37 43.22903(W) AD(       ) 2
 HV7329  NAD 83(1986)-  38 32 09.21816(N)    076 37 43.24317(W) AD(       ) 2
 HV7329  NAD 27      -  38 32 08.78101(N)    076 37 44.39239(W) AD(       ) 2
 HV7329  NGVD 29 (07/19/86)   52.3    (m)          172.     (f) VERT ANG       
 HV7329
 HV7329.Superseded values are not recommended for survey control.
 HV7329
 HV7329.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7329.See file dsdata.pdf to determine how the superseded data were derived.
 HV7329
 HV7329_MARKER: DS = TRIANGULATION STATION DISK
 HV7329_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7329_STAMPING: DONOVAN 1943
 HV7329_MARK LOGO: CGS
 HV7329_PROJECTION: PROJECTING
 HV7329_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7329+STABILITY: SURFACE MOTION
 HV7329
 HV7329  HISTORY     - Date     Condition        Report By
 HV7329  HISTORY     - 1943     MONUMENTED       CGS
 HV7329  HISTORY     - 1945     GOOD             CGS
 HV7329  HISTORY     - 1977     GOOD             NGS
 HV7329
 HV7329                          STATION DESCRIPTION
 HV7329
 HV7329'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7329'THE STATION IS LOCATED ABOUT 1 MILE NORTHWEST OF BARSTOW, A SMALL
 HV7329'SETTLEMENT 2 MILES WEST SOUTHWEST OF PRINCE FREDERICK.  IT IS ON
 HV7329'OR NEAR THE PROPERTY LINE OF J. DAVIS DONOVAN AND AN ADJOINER. IT
 HV7329'IS LOCATED IN THE FENCE LINE AT THE NORTHEAST CORNER OF A FIELD,
 HV7329'AT THE TOP OF A HILL AND IN A GAP IN THE TREES.  IT PROJECTS 8
 HV7329'INCHES AND THE DISK IS STAMPED DONOVAN 1943.
 HV7329'
 HV7329'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 HV7329'DISKS SET IN CONCRETE.
 HV7329'
 HV7329'REFERENCE MARK NO. 1 IS EAST OF THE STATION, BETWEEN A FIELD AND
 HV7329'THE WOODED AREA.  IT PROJECTS 6 INCHES AND THE DISK IS STAMPED
 HV7329'DONOVAN NO 1 1943.
 HV7329'
 HV7329'REFERENCE MARK NO. 2 IS WEST OF THE STATION AT THE EDGE OF THE
 HV7329'WOODS.  IT PROJECTS 6 INCHES AND THE DISK IS STAMPED DONOVAN NO 2
 HV7329'1943.
 HV7329'
 HV7329'BECAUSE OF TIMER NO AZIMUTH MARK WAS SET FOR THIS STATION. HOWEVER
 HV7329'CITY (MSFS) WILL SERVE AS AN AZIMUTH MARK.  IT IS LOCATED ON THE
 HV7329'WEST BANK OF THE PATUXENT RIVER ON TOWN POINT ABOUT 1/4 MILE NORTH
 HV7329'NORTHWEST OF THE BENEDICT FERRY WHARF.  IT IS ON A GRAVEL AND
 HV7329'SHELL POINT ABOUT 4 FEET ABOVE HIGH WATER, 12 YARDS NORTHWEST OF
 HV7329'SHORE AND ABOUT 100 YARDS WEST SOUTHWEST OF THE EXTREME END OF THE
 HV7329'POINT.
 HV7329'
 HV7329'TO REACH THE STATION FROM PRINCE FREDERICK GO SOUTHWEST TOWARDS
 HV7329'THE BENEDICK FERRY FOR 2 MILES TO BARSTOW.  HERE TURN RIGHT ON
 HV7329'TOWARD FARM HOUSE, PASS TO THE RIGHT OF THE FARM HOUSE AND
 HV7329'CONTINUE NORTHEASTERLY TO THE HIGHEST POINT AND THE STATION, A
 HV7329'TOTAL DISTANCE OF 0.35 MILE.
 HV7329'
 HV7329'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SMITH. A 50-FOOT
 HV7329'TOWER WILL SEE A 100-FOOT LIGHT AT SIMS.
 HV7329'
 HV7329'A 50-FOOT TOWER WILL SEE A 4-FOOT LIGHT AT CITY (MSFS).
 HV7329'
 HV7329'A 50-FOOT TOWER WILL SEE A 4-FOOT LIGHT AT PRINCE 2.
 HV7329'
 HV7329'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT ROBERTS.
 HV7329'
 HV7329'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DOWELL.
 HV7329'
 HV7329'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT NAYLOR.
 HV7329'
 HV7329'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT HUNTINGTON.
 HV7329'
 HV7329'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SOPER.
 HV7329'
 HV7329'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT HUTCHINS 1934.
 HV7329'
 HV7329'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV7329
 HV7329                          STATION RECOVERY (1945)
 HV7329
 HV7329'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945 (FLP)
 HV7329'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.
 HV7329'DISTANCES WERE MEASURED AND CHECKED.  THE DESCRIPTION IS ADEQUATE
 HV7329'EXCEPT THAT TO REACH FROM THE CROSSROADS AT BARSTOW, GO 0.3 MILE
 HV7329'ENE ON DIRT ROAD TO Y, THEN BEAR TO THE RIGHT AND GO 0.8 MILE NE
 HV7329'ON DIRT ROAD TO THE DONOVAN FARMHOUSE.  THE STATION IS 176 METERS
 HV7329'E OF THE HOUSE AND ON THE HIGHEST PART OF THE HILL.
 HV7329
 HV7329                          STATION RECOVERY (1977)
 HV7329
 HV7329'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (JLC)
 HV7329'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 HV7329'CONDITION, CITY (MSFS) WHICH WAS USED AS AN AZIMUTH MARK IN 1943
 HV7329'WAS SEARCHED FOR BUT NOT RECOVERED.  NO DISTANCE OR DIRECTION WAS
 HV7329'MADE TO REFERENCE MARK 2, DUE TO THE REQUEST OF THE PROPERTY OWNER
 HV7329'THAT NO TREES BE CUT.  A DIFFERENCE OF 0.035 OF A METER LONGER WAS
 HV7329'NOTED IN THE DISTANCE TO REFERENCE MARK 1.  FOLLOWING IS A NEW
 HV7329'DESCRIPTION.
 HV7329'
 HV7329'THE STATION IS LOCATED ABOUT 4-3/4 MILES EAST OF THE PRINCE
 HV7329'GEORGES, CALVERT COUNTY LINE, 2-1/2 MILES WEST OF PRINCE
 HV7329'FREDERICK, 1 MILE NORTHWEST OF BARSTOW AND ON PROPERTY OWNED BY
 HV7329'MR. CHARLES L. WILSON, 1904 CLARIDGE ROAD, SILVER SPRING, MARYLAND
 HV7329'20902, PHONE NUMBER (301) 942-0609.
 HV7329'
 HV7329'TO REACH THE STATION FROM THE POST OFFICE IN BARSTOW, GO SOUTH ON
 HV7329'STATE HIGHWAY 231 FOR 0.3 MILE TO A CROSS ROAD.  TURN RIGHT AND GO
 HV7329'NORTHWEST ON BARSTOW ROAD FOR 0.3 MILE TO A SIDE ROAD RIGHT.  TURN
 HV7329'RIGHT AND GO NORTH ON A GRAVELED ROAD FOR 0.4 MILE TO A HOUSE ON
 HV7329'THE RIGHT.  CONTINUE ON THE GRAVELED ROAD FOR 0.2 MILE TO A FORK,
 HV7329'BEAR LEFT AND GO NORTHWEST ON A TRACK ROAD FOR 0.15 MILE TO A GATE
 HV7329'JUST AFTER PASSING A LARGE BARN.  PASS THROUGH THE GATE, TURN
 HV7329'SHARP LEFT AND GO WEST ACROSS FIELD FOR 0.05 MILE TO TOP OF HILL
 HV7329'AND THE STATION.
 HV7329'
 HV7329'STATION MARK IS A STANDARD DISK STAMPED DONOVAN 1943, SET IN THE
 HV7329'TOP OF A 12 INCH ROUND CONCRETE POST THAT PROJECTS ABOUT 6 INCHES
 HV7329'ABOVE THE GROUND SURFACE.  IT IS 39 FEET WEST OF A FENCE CORNER, 2
 HV7329'FEET EAST OF A BARBED WIRE FENCE AND 18 FEET SOUTHEAST OF A
 HV7329'24-INCH TREE.  THE UNDERGROUND MARK IS AS STATED IN THE 1943
 HV7329'DESCRIPTION.
 HV7329'
 HV7329'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED DONOVAN NO 1 1943,
 HV7329'SET IN THE TOP OF A 12 INCH ROUND CONCRETE POST THAT PROJECTS
 HV7329'ABOUT 6 INCHES ABOVE THE GROUND SURFACE.  IT IS 59 FEET EAST OF A
 HV7329'FENCE CORNER, 2 FEET NORTH OF A BARBED WIRE FENCE AND IS ABOUT 1
 HV7329'FOOT LOWER THAN THE STATION MARK.
 HV7329'
 HV7329'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED DONOVAN NO 2 1943,
 HV7329'SET IN THE TOP OF A 12 INCH ROUND CONCRETE POST THAT PROJECTS
 HV7329'ABOUT 6 INCHES ABOVE THE GROUND SURFACE.  IT IS 23 FEET EAST OF A
 HV7329'FOUR-TRUNKED TREE, 17 FEET SOUTHWEST OF A 12-INCH TREE, 3 FEET
 HV7329'WEST OF A LEANING TREE AND IS ABOUT 5 FEET LOWER THAN THE STATION
 HV7329'MARK.
 HV7329'
 HV7329'HEIGHT OF LIGHT ABOVE STATION MARK 72.8 FEET.
 HV7329'
 HV7329'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 1 MILE NORTHWEST
 HV7329'OF BARSTOW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6741 ***********************************************************************
 JV6741  DESIGNATION -  DOOLEY
 JV6741  PID         -  JV6741
 JV6741  STATE/COUNTY-  MD/HARFORD
 JV6741  COUNTRY     -  US
 JV6741  USGS QUAD   -  DELTA (2019)
 JV6741
 JV6741                         *CURRENT SURVEY CONTROL
 JV6741  ______________________________________________________________________
 JV6741* NAD 83(2011) POSITION- 39 42 55.73600(N) 076 22 07.97947(W)   ADJUSTED
 JV6741* NAD 83(2011) ELLIP HT-   123.086 (meters)        (06/27/12)   ADJUSTED
 JV6741* NAD 83(2011) EPOCH   -  2010.00
 JV6741* NAVD 88 ORTHO HEIGHT -   155.8   (meters)      511.    (feet) VERTCON3
 JV6741  ______________________________________________________________________
 JV6741  GEOID HEIGHT    -        -32.745 (meters)                     GEOID18
 JV6741  NAD 83(2011) X  -  1,157,857.765 (meters)                     COMP
 JV6741  NAD 83(2011) Y  - -4,774,663.056 (meters)                     COMP
 JV6741  NAD 83(2011) Z  -  4,053,814.139 (meters)                     COMP
 JV6741  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 JV6741
 JV6741  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6741  Standards:
 JV6741         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6741            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6741  -------------------------------------------------------------------
 JV6741  NETWORK    1.77   5.72           0.74   0.68   2.92      0.35166133
 JV6741  -------------------------------------------------------------------
 JV6741  Click here for local accuracies and other accuracy information.
 JV6741
 JV6741.The horizontal coordinates were established by GPS observations
 JV6741.and adjusted by the National Geodetic Survey in June 2012.
 JV6741
 JV6741.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6741.been affixed to the stable North American tectonic plate. See 
 JV6741.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6741
 JV6741.The horizontal coordinates are valid at the epoch date displayed above
 JV6741.which is a decimal equivalence of Year/Month/Day.
 JV6741
 JV6741.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6741.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6741
 JV6741.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6741.GEOID18 height accuracy estimate available here.
 JV6741
 JV6741.Click photographs - Photos may exist for this station.
 JV6741
 JV6741.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6741
 JV6741.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6741
 JV6741.The ellipsoidal height was determined by GPS observations
 JV6741.and is referenced to NAD 83.
 JV6741
 JV6741. The following values were computed from the NAD 83(2011) position.
 JV6741
 JV6741;                    North         East     Units Scale Factor Converg.
 JV6741;SPC MD       -   227,627.119   454,119.175   MT  1.00005724   +0 23 46.0
 JV6741;SPC MD       -   746,806.64  1,489,889.33   sFT  1.00005724   +0 23 46.0
 JV6741;UTM  18      - 4,397,075.008   382,666.959   MT  0.99976949   -0 52 29.2
 JV6741
 JV6741!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6741!SPC MD       -   0.99998069  x   1.00005724  =   1.00003793
 JV6741!UTM  18      -   0.99998069  x   0.99976949  =   0.99975018
 JV6741
 JV6741:                Primary Azimuth Mark                     Grid Az
 JV6741:SPC MD       -  DOOLEY AZ MK                             263 20 24.3
 JV6741:UTM  18      -  DOOLEY AZ MK                             264 36 39.5
 JV6741
 JV6741_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8266697075(NAD 83)
 JV6741
 JV6741|---------------------------------------------------------------------|
 JV6741| PID    Reference Object                     Distance      Geod. Az  |
 JV6741|                                                           dddmmss.s |
 JV6741| JV6742 DOOLEY AZ MK                        APPROX. 0.5 KM 2634410.3 |
 JV6741|---------------------------------------------------------------------|
 JV6741
 JV6741                          SUPERSEDED SURVEY CONTROL
 JV6741
 JV6741  NAD 83(2007)-  39 42 55.73629(N)    076 22 07.98018(W) AD(2002.00) 0
 JV6741  ELLIP H (02/10/07)  123.106  (m)                       GP(2002.00)    
 JV6741  ELLIP H (09/18/02)  123.114  (m)                       GP(       ) 4 2
 JV6741  NAD 83(1991)-  39 42 55.73638(N)    076 22 07.97969(W) AD(       ) 1
 JV6741  ELLIP H (01/27/92)  123.115  (m)                       GP(       ) 4 1
 JV6741  NAD 83(1986)-  39 42 55.72922(N)    076 22 07.98576(W) AD(       ) 1
 JV6741  NGVD 29 (06/18/91)  156.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6741
 JV6741.Superseded values are not recommended for survey control.
 JV6741
 JV6741.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6741.See file dsdata.pdf to determine how the superseded data were derived.
 JV6741
 JV6741_MARKER: DD = SURVEY DISK
 JV6741_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6741_STAMPING: 121 DOOLEY 1989
 JV6741_MARK LOGO: MD-025
 JV6741_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6741_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6741+STABILITY: SURFACE MOTION
 JV6741_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6741+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6741
 JV6741  HISTORY     - Date     Condition        Report By
 JV6741  HISTORY     - 1989     MONUMENTED       RDA
 JV6741
 JV6741                          STATION DESCRIPTION
 JV6741
 JV6741'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6741'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6741'2.0 MILES NORTHWEST OF THE VILLAGE OF WHITEFORD.
 JV6741'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 136 AND
 JV6741'STATE HIGHWAY 24 AT FIVE FORKS PROCEED NORTHEAST ALONG HIGHWAY 136 3.2
 JV6741'MILES TO THE STATION ON THE RIGHT.
 JV6741'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6741'ABOUT 1 INCH BELOW GROUND STAMPED 121 DOOLEY 1989.  THE STATION IS
 JV6741'21.5 FEET SOUTHWEST OF THE CENTERLINE OF HIGHWAY 136, 4.7 FEET
 JV6741'NORTHWEST OF CEL AND P POLE NUMBER 2343, AND 126.8 FEET EAST OF CEL
 JV6741'AND P POLE NUMBER 2344.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6742 ***********************************************************************
 JV6742  DESIGNATION -  DOOLEY AZ MK
 JV6742  PID         -  JV6742
 JV6742  STATE/COUNTY-  MD/HARFORD
 JV6742  COUNTRY     -  US
 JV6742  USGS QUAD   -  DELTA (2019)
 JV6742
 JV6742                         *CURRENT SURVEY CONTROL
 JV6742  ______________________________________________________________________
 JV6742* NAD 83(2011) POSITION- 39 42 53.93143(N) 076 22 29.26117(W)   ADJUSTED
 JV6742* NAD 83(2011) ELLIP HT-   114.671 (meters)        (06/27/12)   ADJUSTED
 JV6742* NAD 83(2011) EPOCH   -  2010.00
 JV6742* NAVD 88 ORTHO HEIGHT -   147.1   (meters)      483.    (feet) VERTCON3
 JV6742  ______________________________________________________________________
 JV6742  GEOID HEIGHT    -        -32.736 (meters)                     GEOID18
 JV6742  NAD 83(2011) X  -  1,157,371.978 (meters)                     COMP
 JV6742  NAD 83(2011) Y  - -4,774,810.765 (meters)                     COMP
 JV6742  NAD 83(2011) Z  -  4,053,765.949 (meters)                     COMP
 JV6742  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 JV6742
 JV6742  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6742  Standards:
 JV6742         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6742            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6742  -------------------------------------------------------------------
 JV6742  NETWORK    2.14   6.92           0.96   0.74   3.53      0.28531431
 JV6742  -------------------------------------------------------------------
 JV6742  Click here for local accuracies and other accuracy information.
 JV6742
 JV6742.The horizontal coordinates were established by GPS observations
 JV6742.and adjusted by the National Geodetic Survey in June 2012.
 JV6742
 JV6742.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6742.been affixed to the stable North American tectonic plate. See 
 JV6742.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6742
 JV6742.The horizontal coordinates are valid at the epoch date displayed above
 JV6742.which is a decimal equivalence of Year/Month/Day.
 JV6742
 JV6742.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6742.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6742
 JV6742.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6742.GEOID18 height accuracy estimate available here.
 JV6742
 JV6742.Click photographs - Photos may exist for this station.
 JV6742
 JV6742.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6742
 JV6742.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6742
 JV6742.The ellipsoidal height was determined by GPS observations
 JV6742.and is referenced to NAD 83.
 JV6742
 JV6742. The following values were computed from the NAD 83(2011) position.
 JV6742
 JV6742;                    North         East     Units Scale Factor Converg.
 JV6742;SPC MD       -   227,567.973   453,612.637   MT  1.00005711   +0 23 32.6
 JV6742;SPC MD       -   746,612.59  1,488,227.46   sFT  1.00005711   +0 23 32.6
 JV6742;UTM  18      - 4,397,027.126   382,159.380   MT  0.99977096   -0 52 42.8
 JV6742
 JV6742!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6742!SPC MD       -   0.99998201  x   1.00005711  =   1.00003912
 JV6742!UTM  18      -   0.99998201  x   0.99977096  =   0.99975297
 JV6742
 JV6742:                Primary Azimuth Mark                     Grid Az
 JV6742:SPC MD       -  DOOLEY                                   083 20 24.1
 JV6742:UTM  18      -  DOOLEY                                   084 36 39.5
 JV6742
 JV6742_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8215997027(NAD 83)
 JV6742
 JV6742|---------------------------------------------------------------------|
 JV6742| PID    Reference Object                     Distance      Geod. Az  |
 JV6742|                                                           dddmmss.s |
 JV6742| JV6741 DOOLEY                              APPROX. 0.5 KM 0834356.7 |
 JV6742|---------------------------------------------------------------------|
 JV6742
 JV6742                          SUPERSEDED SURVEY CONTROL
 JV6742
 JV6742  NAD 83(1991)-  39 42 53.93343(N)    076 22 29.29404(W) AD(       ) 1
 JV6742  ELLIP H (01/27/92)  114.165  (m)                       GP(       ) 4 1
 JV6742  NAD 83(1986)-  39 42 53.92648(N)    076 22 29.30015(W) AD(       ) 1
 JV6742  NGVD 29 (06/18/91)  147.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6742
 JV6742.Superseded values are not recommended for survey control.
 JV6742
 JV6742.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6742.See file dsdata.pdf to determine how the superseded data were derived.
 JV6742
 JV6742_MARKER: DZ = AZIMUTH MARK DISK
 JV6742_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6742_STAMPING: 121 DOOLEY 1989
 JV6742_MARK LOGO: MD-025
 JV6742_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6742_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6742+STABILITY: SURFACE MOTION
 JV6742_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6742+SATELLITE: SATELLITE OBSERVATIONS - January 04, 1990
 JV6742
 JV6742  HISTORY     - Date     Condition        Report By
 JV6742  HISTORY     - 1989     MONUMENTED       RDA
 JV6742  HISTORY     - 19900104 GOOD
 JV6742
 JV6742                          STATION DESCRIPTION
 JV6742
 JV6742'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6742'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED WEST ALONG HIGHWAY
 JV6742'136 0.3 MILES TO THE MARK ON THE LEFT.
 JV6742'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6742'ABOUT 1 INCH BELOW GROUND STAMPED 121 DOOLEY 1989.  THE MARK IS 20.0
 JV6742'FEET SOUTH OF THE CENTERLINE OF HIGHWAY 136, 37.3 FEET SOUTHEAST OF C
 JV6742'AND P OF MARYLAND POLE NUMBER 53, AND 13.8 FEET NORTHEAST OF CEL AND P
 JV6742'POLE NUMBER 2353 AND 1673.09 FEET FROM THE STATION.
 JV6742
 JV6742                          STATION RECOVERY (1990)
 JV6742
 JV6742'RECOVERED 1990
 JV6742'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8021 ***********************************************************************
 AJ8021  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8021  DESIGNATION -  DORADO
 AJ8021  PID         -  AJ8021
 AJ8021  STATE/COUNTY-  MD/DORCHESTER
 AJ8021  COUNTRY     -  US
 AJ8021  USGS QUAD   -  RHODESDALE (2016)
 AJ8021
 AJ8021                         *CURRENT SURVEY CONTROL
 AJ8021  ______________________________________________________________________
 AJ8021* NAD 83(2011) POSITION- 38 34 39.94696(N) 075 46 34.89014(W)   ADJUSTED
 AJ8021* NAD 83(2011) ELLIP HT-   -30.616 (meters)        (06/27/12)   ADJUSTED
 AJ8021* NAD 83(2011) EPOCH   -  2010.00
 AJ8021* NAVD 88 ORTHO HEIGHT -     4.855 (meters)       15.93  (feet) ADJUSTED
 AJ8021  ______________________________________________________________________
 AJ8021  GEOID HEIGHT    -        -35.459 (meters)                     GEOID18
 AJ8021  NAD 83(2011) X  -  1,226,735.170 (meters)                     COMP
 AJ8021  NAD 83(2011) Y  - -4,839,612.172 (meters)                     COMP
 AJ8021  NAD 83(2011) Z  -  3,955,762.299 (meters)                     COMP
 AJ8021  LAPLACE CORR    -         -2.67  (seconds)                    DEFLEC18
 AJ8021  DYNAMIC HEIGHT  -          4.852 (meters)       15.92  (feet) COMP
 AJ8021  MODELED GRAVITY -    980,014.6   (mgal)                       NAVD 88
 AJ8021
 AJ8021  VERT ORDER      -  SECOND    CLASS I
 AJ8021
 AJ8021  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8021  Standards:
 AJ8021         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8021            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8021  -------------------------------------------------------------------
 AJ8021  NETWORK    0.75   1.35           0.32   0.29   0.69      0.14267237
 AJ8021  -------------------------------------------------------------------
 AJ8021  Click here for local accuracies and other accuracy information.
 AJ8021
 AJ8021.The horizontal coordinates were established by GPS observations
 AJ8021.and adjusted by the National Geodetic Survey in June 2012.
 AJ8021
 AJ8021.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8021.been affixed to the stable North American tectonic plate. See 
 AJ8021.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8021
 AJ8021.The horizontal coordinates are valid at the epoch date displayed above
 AJ8021.which is a decimal equivalence of Year/Month/Day.
 AJ8021
 AJ8021.The orthometric height was determined by differential leveling and
 AJ8021.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8021.in November 2003.
 AJ8021
 AJ8021.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8021.GEOID18 height accuracy estimate available here.
 AJ8021
 AJ8021.Click photographs - Photos may exist for this station.
 AJ8021
 AJ8021.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8021
 AJ8021.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8021
 AJ8021.The ellipsoidal height was determined by GPS observations
 AJ8021.and is referenced to NAD 83.
 AJ8021
 AJ8021.The dynamic height is computed by dividing the NAVD 88
 AJ8021.geopotential number by the normal gravity value computed on the
 AJ8021.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8021.degrees latitude (g = 980.6199 gals.).
 AJ8021
 AJ8021.The modeled gravity was interpolated from observed gravity values.
 AJ8021
 AJ8021. The following values were computed from the NAD 83(2011) position.
 AJ8021
 AJ8021;                    North         East     Units Scale Factor Converg.
 AJ8021;SPC MD       -   101,849.842   506,619.677   MT  0.99996330   +0 46 04.8
 AJ8021;SPC MD       -   334,152.36  1,662,134.72   sFT  0.99996330   +0 46 04.8
 AJ8021;UTM  18      - 4,270,207.898   432,375.582   MT  0.99965631   -0 29 02.9
 AJ8021
 AJ8021!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8021!SPC MD       -   1.00000480  x   0.99996330  =   0.99996810
 AJ8021!UTM  18      -   1.00000480  x   0.99965631  =   0.99966111
 AJ8021
 AJ8021_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3237570207(NAD 83)
 AJ8021
 AJ8021                          SUPERSEDED SURVEY CONTROL
 AJ8021
 AJ8021  NAD 83(2007)-  38 34 39.94722(N)    075 46 34.89090(W) AD(2002.00) 0
 AJ8021  ELLIP H (02/10/07)  -30.590  (m)                       GP(2002.00)    
 AJ8021  NAD 83(1991)-  38 34 39.94717(N)    075 46 34.89073(W) AD(       ) A
 AJ8021  ELLIP H (02/12/02)  -30.585  (m)                       GP(       ) 4 1
 AJ8021  NAVD 88 (02/12/02)    4.8    (m)  GEOID99  model used  GPS OBS        
 AJ8021
 AJ8021.Superseded values are not recommended for survey control.
 AJ8021
 AJ8021.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8021.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8021
 AJ8021_MARKER: DD = SURVEY DISK
 AJ8021_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8021_STAMPING: DORADO 2000
 AJ8021_MARK LOGO: MDSHA
 AJ8021_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8021_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8021+STABILITY: SURFACE MOTION
 AJ8021_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8021+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2001
 AJ8021
 AJ8021  HISTORY     - Date     Condition        Report By
 AJ8021  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ8021  HISTORY     - 20010405 GOOD             MDSHA
 AJ8021
 AJ8021                          STATION DESCRIPTION
 AJ8021
 AJ8021'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8021'THE STATION IS LOCATED ABOUT 7.8 MILES (12.6 KM) SOUTH OF
 AJ8021'FEDERALSBURG, 16.0 MILES (25.7 KM) EAST OF CAMBRIDGE, IN THE TOWN OF
 AJ8021'ELDORADO.  TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY
 AJ8021'313 AND STATE HIGHWAY 14 IN ELDORADO, GO SOUTHEAST ALONG STATE HIGHWAY
 AJ8021'313 FOR 0.85 MILES (1.37 KM) TO THE SOUTHEAST END OF A METAL GUARD
 AJ8021'RAIL AND THE STATION ON THE RIGHT.  THE STATION IS A MARYLAND STATE
 AJ8021'SURVEY DISK SET IN THE TOP OF A 12 INCH ROUND CONCRETE MONUMENT WHICH
 AJ8021'IS FLUSH WITH THE GROUND.  IT IS 27.3 FEET (8.3 M) SOUTHWEST OF THE
 AJ8021'CENTER LINE OF THE HIGHWAY, 55.8 FEET (17.0 M) SOUTHEAST OF POWER POLE
 AJ8021'NUMBER C AND P T 116, 60.7 FEET (18.5 M) SOUTHEAST OF THE SOUTHEAST
 AJ8021'END OF A CONCRETE HEADWALL, 99.0 FEET (30.2 M) NORTH-NORTHWEST OF
 AJ8021'POWER POLE NUMBER 41855-00905, 127.0 FEET (38.7 M) NORTHWEST OF THE
 AJ8021'JUNCTION OF CONTRARY ROAD AND STATE HIGHWAY 313, 3.4 FEET (1.0 M)
 AJ8021'SOUTHWEST OF A CARSONITE WITNESS POST AND ABOUT 1 FOOT (0.3 M) LOWER
 AJ8021'THAN THE SURFACE OF THE HIGHWAY.
 AJ8021
 AJ8021                          STATION RECOVERY (2001)
 AJ8021
 AJ8021'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ8021'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5738 ***********************************************************************
 HV5738  DESIGNATION -  DORRANCE
 HV5738  PID         -  HV5738
 HV5738  STATE/COUNTY-  MD/TALBOT
 HV5738  COUNTRY     -  US
 HV5738  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5738
 HV5738                         *CURRENT SURVEY CONTROL
 HV5738  ______________________________________________________________________
 HV5738* NAD 83(1991) POSITION- 38 47 00.08761(N) 076 08 53.92836(W)   ADJUSTED
 HV5738* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5738  ______________________________________________________________________
 HV5738  GEOID HEIGHT    -        -34.511 (meters)                     GEOID18
 HV5738  LAPLACE CORR    -         -4.05  (seconds)                    DEFLEC18
 HV5738  HORZ ORDER      -  THIRD
 HV5738
 HV5738.The horizontal coordinates were established by classical geodetic methods
 HV5738.and adjusted by the National Geodetic Survey in January 1992.
 HV5738
 HV5738.The orthometric height was scaled from a topographic map.
 HV5738
 HV5738.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5738.GEOID18 height accuracy estimate available here.
 HV5738
 HV5738.Click photographs - Photos may exist for this station.
 HV5738
 HV5738.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5738
 HV5738. The following values were computed from the NAD 83(1991) position.
 HV5738
 HV5738;                    North         East     Units Scale Factor Converg.
 HV5738;SPC MD       -   124,302.384   473,998.312   MT  0.99995114   +0 32 04.4
 HV5738;SPC MD       -   407,815.40  1,555,109.46   sFT  0.99995114   +0 32 04.4
 HV5738;UTM  18      - 4,293,362.091   400,261.563   MT  0.99972250   -0 43 09.6
 HV5738
 HV5738!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5738!SPC MD       -   1.00000529  x   0.99995114  =   0.99995643
 HV5738!UTM  18      -   1.00000529  x   0.99972250  =   0.99972779
 HV5738
 HV5738:                Primary Azimuth Mark                     Grid Az
 HV5738:SPC MD       -  TANG                                     039 48 08.5
 HV5738:UTM  18      -  TANG                                     041 03 22.5
 HV5738
 HV5738_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0026193362(NAD 83)
 HV5738
 HV5738|---------------------------------------------------------------------|
 HV5738| PID    Reference Object                     Distance      Geod. Az  |
 HV5738|                                                           dddmmss.s |
 HV5738| HV5672 TANG                                488.649 METERS 0402012.9 |
 HV5738| HV5743 DOCTOR                              458.403 METERS 1224614.1 |
 HV5738| HV5702 WHIT                                APPROX. 0.5 KM 2052450.2 |
 HV5738|---------------------------------------------------------------------|
 HV5738
 HV5738                          SUPERSEDED SURVEY CONTROL
 HV5738
 HV5738  NAD 83(1986)-  38 47 00.08320(N)    076 08 53.94242(W) AD(       ) 3
 HV5738  NAD 27      -  38 46 59.60800(N)    076 08 55.14300(W) AD(       ) 3
 HV5738  USSD        -  38 46 59.98900(N)    076 08 54.90800(W) AD(       ) 3
 HV5738
 HV5738.Superseded values are not recommended for survey control.
 HV5738
 HV5738.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5738.See file dsdata.pdf to determine how the superseded data were derived.
 HV5738
 HV5738_MARKER: H = DRILL HOLE
 HV5738_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5738_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5738
 HV5738  HISTORY     - Date     Condition        Report By
 HV5738  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5738  HISTORY     - 1940     GOOD             CGS
 HV5738  HISTORY     - 1961     GOOD             CGS
 HV5738  HISTORY     - 1973     GOOD             MDDNR
 HV5738
 HV5738                          STATION DESCRIPTION
 HV5738
 HV5738'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5738'STATION IS ON THE NORTHWESTERN SHORE OF MILES RIVER, ABOUT 1-1/4
 HV5738'MILES SW OF MILES RIVER BRIDGE AND 1-1/2 MILES NE OF LONG POINT.
 HV5738'STATION IS ABOUT 5 FEET ABOVE HIGH WATER, 2 YARDS NW OF EDGE OF
 HV5738'BANK, 9 YARDS WSW OF LARGE TREE ON POINT OF BANK, 11 YARDS W OF
 HV5738'POINT OF BANK, AND 12 YARDS SW OF EDGE OF BANK.  STATION MARK IS A
 HV5738'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5738'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST, 2 FEET LONG,
 HV5738'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5738'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUBSURFACE MARK IS
 HV5738'CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES
 HV5738'BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV5738'POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 18-INCH
 HV5738'HICKORY TREE, 5.79 METERS (19.00 FEET), S 13 DEG 38 MIN W.  RIGHT
 HV5738'CORNER OF HOUSE, 300 YARDS, S 67 DEG 30 MIN W.  LEFT PEAK OF SMALL
 HV5738'TENANT HOUSE, 300 YARDS, N 60 DEG 36 MIN W.  NEAR CORNER OF
 HV5738'DORRANCES HOUSE, 300 YARDS, N 9 DEG 15 MIN E.  RIGHT CORNER OF
 HV5738'HOUSE, 1/2 MILE, N 36 DEG 17 MIN E.  CENTER OF WINDMILL TOWER,
 HV5738'1-3/8 MILES, N 50 DEG 19 MIN E.  LEFT CORNER OF LARGE HOUSE, 2
 HV5738'MILES, N 58 DEG 26 MIN E.  NEAR CORNER OF HENDERSONS HOUSE, 1-3/8
 HV5738'MILES, N 64 DEG 42 MIN E.  CENTER OF WINDMILL ON TOWER, 1-3/8
 HV5738'MILES, N 65 DEG 38 MIN E.  NAIL IN BLAZE IN 20-INCH HICKORY TREE,
 HV5738'8.58 METERS (28.15 FEET), N 68 DEG 3 MIN E.  SPINDLE ON BARN
 HV5738'CUPOLA, 1/2 MILE, S 76 DEG 58 MIN E.  RIGHT PEAK OF HOUSE 3/8
 HV5738'MILE, S 69 DEG 1 MIN E.  NEAR PEAK OF HOUSE, 3/4 MILE, S 3 DEG 36
 HV5738'MIN E.
 HV5738
 HV5738                          STATION RECOVERY (1940)
 HV5738
 HV5738'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5738'STATION IS ABOUT 1-1/4 MILES SW OF MILES RIVER BRIDGE ON THE
 HV5738'NORTHWESTERN SHORE OF MILES RIVER.  MARK RECOVERED AS DESCRIBED.
 HV5738'DESCRIPTION ADEQUATE.
 HV5738'
 HV5738'TOP OF MARK PROJECTS 2 INCHES ABOVE SURFACE OF GROUND AND IS IN
 HV5738'GOOD CONDITION.
 HV5738
 HV5738                          STATION RECOVERY (1961)
 HV5738
 HV5738'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5738'STATION SURFACE MARK RECOVERED IN GOOD CONDITION.  THE 20 INCH
 HV5738'HICKORY IS THE ONLY REFERENCE TREE REMAINING OF THE ORIGINAL
 HV5738'TREES.  THE PUBLISHED DESCRIPTION IS ADEQUATE WITH THE FOLLOWING
 HV5738'ADDITIONS--STATION MARK IS NOW 4 FT. NW OF EDGE OF BANK, 29.0 FT.
 HV5738'W OF NAIL IN BLAZED HICKORY, 25.3 FT. NE OF 20 INCH ELM AND 21.7
 HV5738'FT. SW OF A SMALL CEDAR.
 HV5738
 HV5738                          STATION RECOVERY (1973)
 HV5738
 HV5738'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV5738'STATION MARK WAS RECOVERED AS DESCRIBED IN FAIR CONDITION WITH THE
 HV5738'FOLLOWING CORRECTION--SE CORNER OF MONUMENT HAS BEEN BROKEN OFF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6023 ***********************************************************************
 DN6023  DESIGNATION -  DORSEY 2
 DN6023  PID         -  DN6023
 DN6023  STATE/COUNTY-  MD/CARROLL
 DN6023  COUNTRY     -  US
 DN6023  USGS QUAD   -  WINFIELD (2016)
 DN6023
 DN6023                         *CURRENT SURVEY CONTROL
 DN6023  ______________________________________________________________________
 DN6023* NAD 83(1986) POSITION- 39 25 55.8    (N) 077 00 20.3    (W)   HD_HELD2
 DN6023* NAVD 88 ORTHO HEIGHT -   214.862 (meters)      704.93  (feet) ADJUSTED
 DN6023  ______________________________________________________________________
 DN6023  GEOID HEIGHT    -        -31.960 (meters)                     GEOID18
 DN6023  DYNAMIC HEIGHT  -        214.751 (meters)      704.56  (feet) COMP
 DN6023  MODELED GRAVITY -    980,101.0   (mgal)                       NAVD 88
 DN6023
 DN6023  VERT ORDER      -  SECOND    CLASS II
 DN6023
 DN6023.The horizontal coordinates were established by autonomous hand held GPS
 DN6023.observations and have an estimated accuracy of +/- 10 meters.
 DN6023
 DN6023.The orthometric height was determined by differential leveling and
 DN6023.adjusted by the NATIONAL GEODETIC SURVEY
 DN6023.in June 2012.
 DN6023
 DN6023.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6023.GEOID18 height accuracy estimate available here.
 DN6023
 DN6023.Click photographs - Photos may exist for this station.
 DN6023
 DN6023.The dynamic height is computed by dividing the NAVD 88
 DN6023.geopotential number by the normal gravity value computed on the
 DN6023.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6023.degrees latitude (g = 980.6199 gals.).
 DN6023
 DN6023.The modeled gravity was interpolated from observed gravity values.
 DN6023
 DN6023;                    North         East    Units  Estimated Accuracy
 DN6023;SPC MD       -   195,984.      399,515.      MT  (+/- 10 meters HH2 GPS)
 DN6023
 DN6023_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2738266655(NAD 83)
 DN6023
 DN6023                          SUPERSEDED SURVEY CONTROL
 DN6023
 DN6023.No superseded survey control is available for this station.
 DN6023
 DN6023_MARKER: DD = SURVEY DISK
 DN6023_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DN6023_SP_SET: APRON
 DN6023_STAMPING: DORSEY 1986
 DN6023_MARK LOGO: MD-013
 DN6023_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DN6023_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6023+SATELLITE: SATELLITE OBSERVATIONS - July 17, 2015
 DN6023
 DN6023  HISTORY     - Date     Condition        Report By
 DN6023  HISTORY     - 1986     MONUMENTED       MD-013
 DN6023  HISTORY     - 20080122 GOOD             MDSHA
 DN6023  HISTORY     - 20150717 GOOD             USPSQD
 DN6023
 DN6023                          STATION DESCRIPTION
 DN6023
 DN6023'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6023'THE MARK IS LOCATED ABOUT 5.8 MI (9.3 KM) NORTH-NORTHEAST OF WOODBINE,
 DN6023'4.5 MI (7.2 KM) NORTH-NORTHWEST OF SYKESVILLE AND 2.9 MI (4.7 KM)
 DN6023'EAST-SOUTHEAST OF WINFIELD AT THE JUNCTION OF MARYLAND ROUTE 97 AND
 DN6023'MARYLAND ROUTE 26.
 DN6023'
 DN6023'TO REACH FROM THE MD RIGHT 26 OVERPASS OVER MD ROUTE 97, GO NORTH ON
 DN6023'MD ROUTE 97 FOR 235 FT (71.6 M) TO THE MARK ON THE RIGHT.
 DN6023'
 DN6023'IT IS SET IN THE CENTER OF A CONCRETE APRON WHICH IS AT THE NORTHERN
 DN6023'MOST END OF THE ISLAND CREATED BY MARYLAND ROUTE 97 AND THE EXIT RAMP
 DN6023'OFF MARYLAND ROUTE 26, 19.0 FT (5.8 M) EAST OF THE CENTERLINE OF
 DN6023'MARYLAND ROUTE 97 AND 5.6 FT (1.7 M) SOUTH OF THE NORTH END OF THE
 DN6023'APRON.
 DN6023
 DN6023                          STATION RECOVERY (2015)
 DN6023
 DN6023'RECOVERY NOTE BY US POWER SQUADRON 2015
 DN6023'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6053 ***********************************************************************
 HV6053  DESIGNATION -  DOT MSFC 1909
 HV6053  PID         -  HV6053
 HV6053  STATE/COUNTY-  MD/DORCHESTER
 HV6053  COUNTRY     -  US
 HV6053  USGS QUAD   -  OXFORD (2016)
 HV6053
 HV6053                         *CURRENT SURVEY CONTROL
 HV6053  ______________________________________________________________________
 HV6053* NAD 83(1991) POSITION- 38 37 46.45476(N) 076 14 07.51126(W)   ADJUSTED
 HV6053* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6053  ______________________________________________________________________
 HV6053  GEOID HEIGHT    -        -34.591 (meters)                     GEOID18
 HV6053  LAPLACE CORR    -         -4.72  (seconds)                    DEFLEC18
 HV6053  HORZ ORDER      -  THIRD
 HV6053
 HV6053.The horizontal coordinates were established by classical geodetic methods
 HV6053.and adjusted by the National Geodetic Survey in January 1992.
 HV6053
 HV6053.The orthometric height was scaled from a topographic map.
 HV6053
 HV6053.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6053.GEOID18 height accuracy estimate available here.
 HV6053
 HV6053.Click photographs - Photos may exist for this station.
 HV6053
 HV6053.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6053
 HV6053. The following values were computed from the NAD 83(1991) position.
 HV6053
 HV6053;                    North         East     Units Scale Factor Converg.
 HV6053;SPC MD       -   107,164.896   466,573.287   MT  0.99995903   +0 28 47.6
 HV6053;SPC MD       -   351,590.16  1,530,749.19   sFT  0.99995903   +0 28 47.6
 HV6053;UTM  18      - 4,276,394.778   392,465.424   MT  0.99974240   -0 46 16.8
 HV6053
 HV6053!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6053!SPC MD       -   1.00000515  x   0.99995903  =   0.99996418
 HV6053!UTM  18      -   1.00000515  x   0.99974240  =   0.99974755
 HV6053
 HV6053:                Primary Azimuth Mark                     Grid Az
 HV6053:SPC MD       -  CHEF MSFC 1909                           272 55 04.5
 HV6053:UTM  18      -  CHEF MSFC 1909                           274 10 08.9
 HV6053
 HV6053_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9246576394(NAD 83)
 HV6053
 HV6053|---------------------------------------------------------------------|
 HV6053| PID    Reference Object                     Distance      Geod. Az  |
 HV6053|                                                           dddmmss.s |
 HV6053| HV6107 CHEF MSFC 1909                      APPROX. 4.9 KM 2732352.1 |
 HV6053|---------------------------------------------------------------------|
 HV6053
 HV6053                          SUPERSEDED SURVEY CONTROL
 HV6053
 HV6053  NAD 83(1986)-  38 37 46.45203(N)    076 14 07.52677(W) AD(       ) 3
 HV6053  NAD 27      -  38 37 46.02700(N)    076 14 08.72000(W) AD(       ) 3
 HV6053  USSD        -  38 37 46.41200(N)    076 14 08.53400(W) AD(       ) 3
 HV6053
 HV6053.Superseded values are not recommended for survey control.
 HV6053
 HV6053.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6053.See file dsdata.pdf to determine how the superseded data were derived.
 HV6053
 HV6053_MARKER: Z = SEE DESCRIPTION
 HV6053_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6053_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6053+STABILITY: SURFACE MOTION
 HV6053
 HV6053  HISTORY     - Date     Condition        Report By
 HV6053  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6053
 HV6053                          STATION DESCRIPTION
 HV6053
 HV6053'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6053'ON THE SOUTHERN SHORE OF CHOPTANK RIVER, ABOUT 3-1/2 MILES SW OF
 HV6053'CHOPTANK RIVER LIGHT, ON TODD POINT, ABOUT 4 FEET ABOVE HIGH
 HV6053'WATER, 55 YARDS WSW OF SHORE, 30 YARDS SSW OF EDGE OF BANK, 40
 HV6053'YARDS S BY E OF POINT WHERE BANK MEETS MARSH, 70 YARDS S BY W OF
 HV6053'EXTREME END OF POINT.  STATION IS MARKED BY A HOLE IN THE CENTER
 HV6053'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6053'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV6053'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6053'TOP OF POST.  SUB-SURFACE MARK IS CENTER OF 2-INCH TILE PIPE
 HV6053'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HV6053'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6053'FOLLOWS--CHIMNEY OUTSIDE OF NEAR END OF HOUSE, 200 YARDS, S 51
 HV6053'DEG 51 MIN W.  LEFT CHIMNEY OF HOUSE ON COOKS POINT, 2-3/4 MILES,
 HV6053'S 88 DEG 50 MIN W.  CUPOLA OF HOUSE, 3-5/8 MILES, N 29 DEG 28
 HV6053'MIN E.  NEAR PEAK OF HOUSE, 2-3/4 MILES, S 80 DEG 49 MIN E.  NEAR
 HV6053'PEAK OF BUILDING, 2-1/4 MILES, S 50 DEG 45 MIN E. CHIMNEY OUTSIDE
 HV6053'RIGHT END OF HOUSE, 1-3/8 MILES, S 21 DEG 16 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6573 ***********************************************************************
 JV6573  DESIGNATION -  DOUB 2
 JV6573  PID         -  JV6573
 JV6573  STATE/COUNTY-  MD/WASHINGTON
 JV6573  COUNTRY     -  US
 JV6573  USGS QUAD   -  WILLIAMSPORT (2017)
 JV6573
 JV6573                         *CURRENT SURVEY CONTROL
 JV6573  ______________________________________________________________________
 JV6573* NAD 83(1991) POSITION- 39 36 16.30352(N) 077 47 51.49774(W)   ADJUSTED
 JV6573* NAVD 88 ORTHO HEIGHT -   146.    (meters)      479.    (feet) SCALED
 JV6573  ______________________________________________________________________
 JV6573  GEOID HEIGHT    -        -34.228 (meters)                     GEOID18
 JV6573  LAPLACE CORR    -          3.02  (seconds)                    DEFLEC18
 JV6573  HORZ ORDER      -  THIRD
 JV6573
 JV6573.The horizontal coordinates were established by classical geodetic methods
 JV6573.and adjusted by the National Geodetic Survey in January 1992.
 JV6573
 JV6573.The orthometric height was scaled from a topographic map.
 JV6573
 JV6573.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6573.GEOID18 height accuracy estimate available here.
 JV6573
 JV6573.Click photographs - Photos may exist for this station.
 JV6573
 JV6573.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6573
 JV6573. The following values were computed from the NAD 83(1991) position.
 JV6573
 JV6573;                    North         East     Units Scale Factor Converg.
 JV6573;SPC MD       -   215,419.841   331,494.056   MT  1.00003069   -0 30 02.2
 JV6573;SPC MD       -   706,756.60  1,087,576.75   sFT  1.00003069   -0 30 02.2
 JV6573;SPC WV N     -   124,006.753   746,188.977   MT  0.99994081   +1 05 08.6
 JV6573;SPC WV N     -   406,845.49  2,448,121.67   sFT  0.99994081   +1 05 08.6
 JV6573;UTM  18      - 4,387,605.214   259,804.455   MT  1.00031037   -1 47 03.5
 JV6573
 JV6573!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6573!SPC MD       -   0.99998248  x   1.00003069  =   1.00001317
 JV6573!SPC WV N     -   0.99998248  x   0.99994081  =   0.99992329
 JV6573!UTM  18      -   0.99998248  x   1.00031037  =   1.00029285
 JV6573
 JV6573_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5980487605(NAD 83)
 JV6573
 JV6573|---------------------------------------------------------------------|
 JV6573| PID    Reference Object                     Distance      Geod. Az  |
 JV6573|                                                           dddmmss.s |
 JV6573| JV6591 DOUB 2 RM 3                          12.786 METERS 02652     |
 JV6573| JV4733 DOUB                                 53.154 METERS 30116     |
 JV6573| JV6592 DOUB 2 RM 4                          13.118 METERS 31725     |
 JV6573|---------------------------------------------------------------------|
 JV6573
 JV6573                          SUPERSEDED SURVEY CONTROL
 JV6573
 JV6573  NAD 83(1986)-  39 36 16.30280(N)    077 47 51.50708(W) AD(       ) 3
 JV6573
 JV6573.Superseded values are not recommended for survey control.
 JV6573
 JV6573.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6573.See file dsdata.pdf to determine how the superseded data were derived.
 JV6573
 JV6573_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6573_SETTING: 66 = SET IN ROCK OUTCROP
 JV6573_STAMPING: DOUB 2 1981
 JV6573_MARK LOGO: NGS
 JV6573_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6573_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6573+STABILITY: POSITION/ELEVATION WELL
 JV6573_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6573+SATELLITE: SATELLITE OBSERVATIONS - 2021
 JV6573
 JV6573  HISTORY     - Date     Condition        Report By
 JV6573  HISTORY     - 1981     MONUMENTED       NGS
 JV6573  HISTORY     - 20070707 GOOD             GEOCAC
 JV6573  HISTORY     - 20110502 GOOD             GEOCAC
 JV6573  HISTORY     - 2021     GOOD             BASE9
 JV6573
 JV6573                          STATION DESCRIPTION
 JV6573
 JV6573'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 JV6573'THE STATION IS LOCATED ABOUT 8.05 KM (5.00 MI) SOUTHWEST OF
 JV6573'HAGERSTOWN, 1.6 KM (1.00 MI) NORTHEAST OF WILLIAMSPORT, 0.4 KM
 JV6573'(0.25 MI) NORTHEAST OF INTERSTATE HIGHWAY 81 AND IN THE SOUTHEAST EDGE
 JV6573'OF THE HOMEWOOD RETIREMENT CENTER.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV6573'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 81 AND U.S.
 JV6573'HIGHWAY 11 IN THE NORTH PART OF WILLIAMSPORT, GO NORTHEAST ON U.S.
 JV6573'HIGHWAY 11 FOR 0.73 KM (0.45 MI) TO A SIDE ROAD RIGHT.  TURN RIGHT AND
 JV6573'FOLLOW GOVERNOR LANE BOULEVARD SOUTHEAST AND SOUTHWEST FOR 0.56 KM
 JV6573'(0.35 MI) TO DOUB ROAD ON THE RIGHT AND THE MARKER ON THE RIGHT IN THE
 JV6573'NORTHWEST ANGLE OF THE INTERSECTION.
 JV6573'THE DISK IS SET IN THE TOP OF THE 0.6 M (2.0 FT) ROCK OUTCROP WHICH IS
 JV6573'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 9.08 M (29.8 FT) SOUTH OF
 JV6573'A WITNESS POST, 10.36 M (34.0 FT) NORTHEAST OF THE CENTER OF DOUB
 JV6573'ROAD, 11.49 M (37.7 FT) SOUTH-SOUTHEAST OF A POWERLINE POLE NUMBERED 2
 JV6573'H23670 AND 23.16 M (76.0 FT) NORTHWEST OF THE CENTER OF GOVERNOR LANE
 JV6573'BOULEVARD.
 JV6573'STATION RONEY MAY SERVE AS AN AZIMUTH MARK FOR THIS STATION.
 JV6573
 JV6573                          STATION RECOVERY (2007)
 JV6573
 JV6573'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV6573'NONPUBLISHED RM 3 AND 4 ALSO RECOVERED IN GOOD CONDITION.
 JV6573
 JV6573                          STATION RECOVERY (2011)
 JV6573
 JV6573'RECOVERY NOTE BY GEOCACHING 2011 (TLM)
 JV6573'RECOVERED IN GOOD CONDITION
 JV6573
 JV6573                          STATION RECOVERY (2021)
 JV6573
 JV6573'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2021 (DRD)
 JV6573'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6493 ***********************************************************************
 HV6493  DESIGNATION -  DOUG
 HV6493  PID         -  HV6493
 HV6493  STATE/COUNTY-  MD/DORCHESTER
 HV6493  COUNTRY     -  US
 HV6493  USGS QUAD   -  KEDGES STRAITS (2016)
 HV6493
 HV6493                         *CURRENT SURVEY CONTROL
 HV6493  ______________________________________________________________________
 HV6493* NAD 83(1993) POSITION- 38 07 11.31315(N) 076 04 51.89761(W)   ADJUSTED
 HV6493* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6493  ______________________________________________________________________
 HV6493  GEOID HEIGHT    -        -35.712 (meters)                     GEOID18
 HV6493  LAPLACE CORR    -         -1.85  (seconds)                    DEFLEC18
 HV6493  HORZ ORDER      -  THIRD
 HV6493
 HV6493.The horizontal coordinates were established by classical geodetic methods
 HV6493.and adjusted by the National Geodetic Survey in November 1994.
 HV6493
 HV6493.The orthometric height was scaled from a topographic map.
 HV6493
 HV6493.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6493.GEOID18 height accuracy estimate available here.
 HV6493
 HV6493.Click photographs - Photos may exist for this station.
 HV6493
 HV6493.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6493
 HV6493. The following values were computed from the NAD 83(1993) position.
 HV6493
 HV6493;                    North         East     Units Scale Factor Converg.
 HV6493;SPC MD       -    50,706.819   480,580.843   MT  1.00003623   +0 34 36.3
 HV6493;SPC MD       -   166,360.62  1,576,705.65   sFT  1.00003623   +0 34 36.3
 HV6493;UTM  18      - 4,219,660.156   405,237.107   MT  0.99971060   -0 40 02.7
 HV6493
 HV6493!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6493!SPC MD       -   1.00000565  x   1.00003623  =   1.00004188
 HV6493!UTM  18      -   1.00000565  x   0.99971060  =   0.99971624
 HV6493
 HV6493_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0523719660(NAD 83)
 HV6493
 HV6493                          SUPERSEDED SURVEY CONTROL
 HV6493
 HV6493  NAD 83(1991)-  38 07 11.31258(N)    076 04 51.89848(W) AD(       ) 3
 HV6493  NAD 83(1986)-  38 07 11.31238(N)    076 04 51.91713(W) AD(       ) 3
 HV6493  NAD 27      -  38 07 10.89000(N)    076 04 53.15300(W) AD(       ) 3
 HV6493
 HV6493.Superseded values are not recommended for survey control.
 HV6493
 HV6493.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6493.See file dsdata.pdf to determine how the superseded data were derived.
 HV6493
 HV6493_MARKER: DW = HYDROGRAPHIC STATION DISK
 HV6493_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6493_STAMPING: DOUG 1942
 HV6493_MARK LOGO: CGS
 HV6493_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6493+STABILITY: SURFACE MOTION
 HV6493
 HV6493  HISTORY     - Date     Condition        Report By
 HV6493  HISTORY     - 1942     MONUMENTED       CGS
 HV6493  HISTORY     - 1961     GOOD             CGS
 HV6493
 HV6493                          STATION DESCRIPTION
 HV6493
 HV6493'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6493'LOCATED ON BUTTONHOOK POINT ON THE E SIDE OF HOLLAND ISLAND, 20
 HV6493'METERS NW AND 73 METERS NE OF WATERS EDGE.
 HV6493'
 HV6493'STATION MARK IS A BRONZE HYDROGRAPHIC-STATION DISK SET IN A
 HV6493'5-INCH CEMENT-FILLED CYLINDRICAL POST WHICH PROJECTS 4 INCHES
 HV6493'ABOVE THE GROUND.  IT IS STAMPED DOUG 1942.
 HV6493
 HV6493                          STATION RECOVERY (1961)
 HV6493
 HV6493'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6493'STATION RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS--
 HV6493'
 HV6493'THE STATION IS LOCATED ON THE EAST SIDE OF HOLLAND ISLAND ON
 HV6493'BUTTONHOOK POINT, 53.5 FT. NW OF THE SHORELINE, 210 FT. NNE OF
 HV6493'THE EXTREME END OF THE POINT, AND 1.8 FT. NE OF A 4 INCH PINE
 HV6493'POLE STUCK IN THE MARSH.  THE STATION MARK IS A STANDARD
 HV6493'TOPOGRAPHIC STATION DISK STAMPED DOUG, 1942 SET IN THE TOP OF
 HV6493'A 5 INCH ROUND CONCRETE MONUMENT FLUSH WITH THE MARSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1854 ***********************************************************************
 HU1854  DESIGNATION -  DOVE
 HU1854  PID         -  HU1854
 HU1854  STATE/COUNTY-  MD/SOMERSET
 HU1854  COUNTRY     -  US
 HU1854  USGS QUAD   -  MONIE (2016)
 HU1854
 HU1854                         *CURRENT SURVEY CONTROL
 HU1854  ______________________________________________________________________
 HU1854* NAD 83(1991) POSITION- 38 12 15.79600(N) 075 51 33.82942(W)   ADJUSTED
 HU1854* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1854  ______________________________________________________________________
 HU1854  GEOID HEIGHT    -        -35.849 (meters)                     GEOID18
 HU1854  LAPLACE CORR    -         -1.98  (seconds)                    DEFLEC18
 HU1854  HORZ ORDER      -  THIRD
 HU1854
 HU1854.The horizontal coordinates were established by classical geodetic methods
 HU1854.and adjusted by the National Geodetic Survey in January 1992.
 HU1854
 HU1854.The orthometric height was scaled from a topographic map.
 HU1854
 HU1854.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1854.GEOID18 height accuracy estimate available here.
 HU1854
 HU1854.Click photographs - Photos may exist for this station.
 HU1854
 HU1854.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1854
 HU1854. The following values were computed from the NAD 83(1991) position.
 HU1854
 HU1854;                    North         East     Units Scale Factor Converg.
 HU1854;SPC MD       -    60,313.808   499,902.477   MT  1.00001801   +0 42 57.2
 HU1854;SPC MD       -   197,879.55  1,640,096.71   sFT  1.00001801   +0 42 57.2
 HU1854;UTM  18      - 4,228,841.681   424,756.458   MT  0.99966973   -0 31 53.5
 HU1854
 HU1854!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1854!SPC MD       -   1.00000567  x   1.00001801  =   1.00002368
 HU1854!UTM  18      -   1.00000567  x   0.99966973  =   0.99967539
 HU1854
 HU1854:                Primary Azimuth Mark                     Grid Az
 HU1854:SPC MD       -  GREAT SHOALS LIGHTHOUSE                  301 35 40.6
 HU1854:UTM  18      -  GREAT SHOALS LIGHTHOUSE                  302 50 31.3
 HU1854
 HU1854_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2475628841(NAD 83)
 HU1854
 HU1854|---------------------------------------------------------------------|
 HU1854| PID    Reference Object                     Distance      Geod. Az  |
 HU1854|                                                           dddmmss.s |
 HU1854| HU1865 MOUNT VERNON CHURCH SPIRE           APPROX. 5.0 KM 0285542.3 |
 HU1854| DC7241 DOVE RM                              13.980 METERS 14454     |
 HU1854| HU1905 GREAT SHOALS LIGHTHOUSE             APPROX. 2.1 KM 3021837.8 |
 HU1854|---------------------------------------------------------------------|
 HU1854
 HU1854                          SUPERSEDED SURVEY CONTROL
 HU1854
 HU1854  NAD 83(1986)-  38 12 15.79547(N)    075 51 33.85169(W) AD(       ) 3
 HU1854  NAD 27      -  38 12 15.35300(N)    075 51 35.08900(W) AD(       ) 3
 HU1854  USSD        -  38 12 15.72100(N)    075 51 34.82800(W) AD(       ) 3
 HU1854
 HU1854.Superseded values are not recommended for survey control.
 HU1854
 HU1854.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1854.See file dsdata.pdf to determine how the superseded data were derived.
 HU1854
 HU1854_MARKER: N = NAIL
 HU1854_SETTING: 0 = UNSPECIFIED SETTING
 HU1854
 HU1854  HISTORY     - Date     Condition        Report By
 HU1854  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1854  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1854
 HU1854                          STATION DESCRIPTION
 HU1854
 HU1854'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1854'STATION IS ON THE S SHORE OF MONIE BAY, ABOUT 1/4 MILE E OF
 HU1854'ENTRANCE TO PIGEON CREEK, ON MARSHLAND ABOUT 10 YARDS BACK FROM
 HU1854'HIGH-WATER MARK AND NOT FAR FROM WATER BUSHES WHICH STAND TO
 HU1854'E.  STATION MARK IS NAIL IN PINE STUB FLUSH WITH GROUND.
 HU1854'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HU1854'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HU1854'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HU1854'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HU1854'TOP OF POST.  IT IS 13.98 METERS (45.9 FEET) FROM THE STATION
 HU1854'S 35 DEG 15 MIN E.  OTHER DISTANCES AND BEARINGS
 HU1854'ARE AS FOLLOWS--CHIMNEY OF WHITE HOUSE WITH DARK RED TRIMMINGS, 1
 HU1854'1/4 MILES, S 7 DEG 40 MIN W.  LEFT SIDE OF NANTICOKE POINT WOODS,
 HU1854'2-3/4 MILES, N 50 DEG 45 MIN W.  TANGENT OF WINGATE POINT, 2 MILES,
 HU1854'N 04 DEG 59 MIN W.  CHIMNEY OF RED ROOF, 2 MILES, N 09 DEG 58 MIN E.
 HU1854'CHIMNEY ON YELLOW HOUSE WITH RED GABLE ROOF, 3 MILES, N 26 DEG 31
 HU1854'MIN E.  MOUNT VERNON CHURCH, 3-1/4 MILES, N 28 DEG 56 MIN E.  TANGENT
 HU1854'OF LAND, 300 YARDS, N 48 DEG 57 MIN E.
 HU1854
 HU1854                          STATION RECOVERY (1942)
 HU1854
 HU1854'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1854'THE STATION AND THE REFERENCE MARK WERE SEARCHED FOR THOROUGHLY,
 HU1854'MEASUREMENTS WERE TAKEN FROM THE APPROXIMATE LOCATION OF THE
 HU1854'STATION, BUT NO TRACE OF THE CONCRETE MARK WAS FOUND.
 HU1854'
 HU1854'IN VIEW OF THE THOROUGH SEARCH NOW AND PREVIOUSLY, IT IS
 HU1854'RECOMMENDED THAT THE STATION AND REFERENCE MARK BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5661 ***********************************************************************
 JV5661  DESIGNATION -  DOVER
 JV5661  PID         -  JV5661
 JV5661  STATE/COUNTY-  MD/BALTIMORE
 JV5661  COUNTRY     -  US
 JV5661  USGS QUAD   -  COCKEYSVILLE (2016)
 JV5661
 JV5661                         *CURRENT SURVEY CONTROL
 JV5661  ______________________________________________________________________
 JV5661* NAD 83(1991) POSITION- 39 26 32.48006(N) 076 42 59.08609(W)   ADJUSTED
 JV5661* NAVD 88 ORTHO HEIGHT -   202.    (meters)      663.    (feet) SCALED
 JV5661  ______________________________________________________________________
 JV5661  GEOID HEIGHT    -        -32.260 (meters)                     GEOID18
 JV5661  LAPLACE CORR    -         -3.81  (seconds)                    DEFLEC18
 JV5661  HORZ ORDER      -  FIRST
 JV5661
 JV5661.The horizontal coordinates were established by classical geodetic methods
 JV5661.and adjusted by the National Geodetic Survey in January 1992.
 JV5661
 JV5661.The orthometric height was scaled from a topographic map.
 JV5661
 JV5661.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5661.GEOID18 height accuracy estimate available here.
 JV5661
 JV5661.Click photographs - Photos may exist for this station.
 JV5661
 JV5661.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5661
 JV5661. The following values were computed from the NAD 83(1991) position.
 JV5661
 JV5661;                    North         East     Units Scale Factor Converg.
 JV5661;SPC MD       -   197,152.861   424,412.369   MT  0.99999867   +0 10 40.8
 JV5661;SPC MD       -   646,825.68  1,392,426.25   sFT  0.99999867   +0 10 40.8
 JV5661;UTM  18      - 4,367,272.868   352,298.383   MT  0.99986860   -1 05 26.3
 JV5661
 JV5661!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5661!SPC MD       -   0.99997340  x   0.99999867  =   0.99997207
 JV5661!UTM  18      -   0.99997340  x   0.99986860  =   0.99984201
 JV5661
 JV5661:                Primary Azimuth Mark                     Grid Az
 JV5661:SPC MD       -  DOVER AZ MK                              317 31 33.7
 JV5661:UTM  18      -  DOVER AZ MK                              318 47 40.8
 JV5661
 JV5661_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5229867272(NAD 83)
 JV5661
 JV5661|---------------------------------------------------------------------|
 JV5661| PID    Reference Object                     Distance      Geod. Az  |
 JV5661|                                                           dddmmss.s |
 JV5661| CA9352 DOVER RM 1                           23.820 METERS 14611     |
 JV5661| CA9353 DOVER RM 2                           17.380 METERS 23313     |
 JV5661| CA9351 DOVER RM 3 AZIMUTH                                 3174214.5 |
 JV5661| CA9350 DOVER AZ MK                                        3174214.5 |
 JV5661|---------------------------------------------------------------------|
 JV5661
 JV5661                          SUPERSEDED SURVEY CONTROL
 JV5661
 JV5661  NAD 83(1986)-  39 26 32.47722(N)    076 42 59.09315(W) AD(       ) 1
 JV5661  NAD 27      -  39 26 32.09600(N)    076 43 00.18540(W) AD(       ) 1
 JV5661
 JV5661.Superseded values are not recommended for survey control.
 JV5661
 JV5661.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5661.See file dsdata.pdf to determine how the superseded data were derived.
 JV5661
 JV5661_MARKER: DS = TRIANGULATION STATION DISK
 JV5661_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5661_STAMPING: DOVER 1938
 JV5661_MARK LOGO: CGS
 JV5661_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5661+STABILITY: SURFACE MOTION
 JV5661
 JV5661  HISTORY     - Date     Condition        Report By
 JV5661  HISTORY     - 1938     MONUMENTED       CGS
 JV5661  HISTORY     - 1953     GOOD             CGS
 JV5661  HISTORY     - 1955     GOOD             CGS
 JV5661  HISTORY     - 1957     GOOD             CGS
 JV5661
 JV5661                          STATION DESCRIPTION
 JV5661
 JV5661'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV5661'THE STATION IS ON THE GROUNDS OF DOVER ROAD SCHOOLHOUSE.
 JV5661'
 JV5661'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV5661'BRONZE DISKS SET IN CONCRETE.
 JV5661'
 JV5661'AZIMUTH MARK IS NE OF STATION ON THE E SIDE OF CAVES ROAD JUST
 JV5661'S OF GREEN SPRING AVENUE.
 JV5661'
 JV5661'TO REACH FROM BALTIMORE, GO N ON FALLS ROAD TO GREEN SPRING
 JV5661'VALLEY ROAD.  TURN LEFT ON GREEN SPRING VALLEY ROAD PAST
 JV5661'EMERSONS DAIRY 1.2 MILES TO GREEN SPRING AVENUE.  TURN RIGHT ON
 JV5661'GREEN SPRING AVENUE 1.9 MILES TO DOVER SCHOOL HOUSE.  MARK IS IN
 JV5661'THE N PROPERTY LINE W OF SCHOOLHOUSE.
 JV5661'
 JV5661'HEIGHT OF LIGHT ABOVE STATION MARK 26.52 METERS.
 JV5661
 JV5661                          STATION RECOVERY (1953)
 JV5661
 JV5661'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (EWM)
 JV5661'STATION RECOVERED AS DESCRIBED WITH THE FOLLOWING EXCEPTIONS--
 JV5661'
 JV5661'DOVER ROAD SCHOOL HOUSE IS NOW A PRIVATE DWELLING.  THE STATION
 JV5661'IS LOCATED 1 FT. S OF A FENCE LINE.
 JV5661'
 JV5661'REFERENCE MARK 1 LOCATED AT THE BASE OF AN 18-IN. OAK TREE.
 JV5661'
 JV5661'REFERENCE MARK 2 IS LOCATED 2 FT. SE OF A FENCE CORNER.
 JV5661'
 JV5661'AZIMUTH MARK WAS NOT LOOKED FOR.
 JV5661
 JV5661                          STATION RECOVERY (1955)
 JV5661
 JV5661'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (EHK)
 JV5661'STATION AND REFERENCE MARKS 1 AND 2 RECOVERED IN GOOD
 JV5661'CONDITION.  THE 1953 DESCRIPTION SHOULD INCLUDE THE FOLLOWING--THE
 JV5661'STATION IS LOCATED ON THE PROPERTY OF MR. D. EARICKSON, AND
 JV5661'37.3 FT. N OF THE NE CORNER OF THE GARAGE.
 JV5661'
 JV5661'THE AZIMUTH MARK WAS IN THE WAY OF THE ROAD RELOCATION, AND A
 JV5661'NEW MARK WAS SET IN LINE, 52 FT. FROM THE OLD AZIMUTH MARK
 JV5661'TOWARD THE STATION MARK.  THE NEW MARK IS LOCATED ON THE SE SIDE
 JV5661'OF CAVES ROAD, 4 FT. FROM THE EDGE OF THE BANK, 159 FT. FROM THE
 JV5661'CENTERLINE OF GREEN SPRING AVENUE, A STANDARD REFERENCE-MARK
 JV5661'DISK, SET IN THE TOP OF A CONCRETE POST, STAMPED RM 3 DOVER
 JV5661'1955, AND PROJECTS 3 IN. ABOVE GROUND.
 JV5661
 JV5661                          STATION RECOVERY (1957)
 JV5661
 JV5661'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5661'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 JV5661'TO BE IN GOOD CONDITION.  THE DISTANCE AND DIRECTIONS TO THE
 JV5661'MARKS WERE CHECKED EXCEPT THE DIRECTION TO REFERENCE MARK 1.
 JV5661'
 JV5661'AZIMUTH MARK IS 45 FT. S OF A UTILITY POLE, 39-1/2 FT. E OF
 JV5661'APPROXIMATE CENTERLINE OF THE ROAD, AND 6-1/2 FT. E OF A WITNESS
 JV5661'POST.  THE MARK PROJECTS ABOUT 2 IN. AND THE DISK IS STAMPED
 JV5661'DOVER RM 3 1955.
 JV5661'
 JV5661'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV5661'
 JV5661'A NEW WAY TO REACH THE STATION FOLLOWS--
 JV5661'
 JV5661'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 140 AND
 JV5661'STATE HIGHWAY 130 IN THE TOWN OF GARRISON (ABOUT 10 MI. NW OF
 JV5661'BALTIMORE), GO E ON STATE HIGHWAY 130 (VALLEY ROAD) FOR 1.7 MI. TO
 JV5661'CROSSROADS AND JUNCTION WITH STATE HIGHWAY 129, TURN LEFT ON
 JV5661'STATE HIGHWAY 129 AND GO FOR 2.0 MI. TO A T-INTERSECTION AT TOP
 JV5661'OF A HILL, TURN RIGHT AND GO FOR 0.55 MI. TO A BIG BRICK
 JV5661'FARMHOUSE, TURN RIGHT INTO THE DRIVEWAY AND THE STATION BEHIND THE
 JV5661'HOUSE AS DESCRIBED.
 JV5661'
 JV5661'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NW ON A HARD
 JV5661'SURFACED ROAD FOR 0.55 MI. TO A SIDE ROAD LEFT, TURN LEFT FOR
 JV5661'APPROXIMATELY 150 FT. TO THE MARK ON THE LEFT AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7330 ***********************************************************************
 HV7330  DESIGNATION -  DOWELL
 HV7330  PID         -  HV7330
 HV7330  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7330  COUNTRY     -  US
 HV7330  USGS QUAD   -  BENEDICT (2016)
 HV7330
 HV7330                         *CURRENT SURVEY CONTROL
 HV7330  ______________________________________________________________________
 HV7330* NAD 83(1993) POSITION- 38 33 18.46129(N) 076 41 37.74168(W)   ADJUSTED
 HV7330* NAVD 88 ORTHO HEIGHT -    46.1   (meters)      151.    (feet) VERTCON3
 HV7330  ______________________________________________________________________
 HV7330  GEOID HEIGHT    -        -33.584 (meters)                     GEOID18
 HV7330  LAPLACE CORR    -         -3.82  (seconds)                    DEFLEC18
 HV7330  HORZ ORDER      -  SECOND
 HV7330
 HV7330.The horizontal coordinates were established by classical geodetic methods
 HV7330.and adjusted by the National Geodetic Survey in November 1994.
 HV7330
 HV7330.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7330.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7330
 HV7330.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7330.GEOID18 height accuracy estimate available here.
 HV7330
 HV7330.Click photographs - Photos may exist for this station.
 HV7330
 HV7330.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7330
 HV7330. The following values were computed from the NAD 83(1993) position.
 HV7330
 HV7330;                    North         East     Units Scale Factor Converg.
 HV7330;SPC MD       -    98,667.467   426,687.835   MT  0.99996542   +0 11 31.8
 HV7330;SPC MD       -   323,711.51  1,399,891.67   sFT  0.99996542   +0 11 31.8
 HV7330;UTM  18      - 4,268,770.483   352,410.544   MT  0.99986825   -1 03 21.2
 HV7330
 HV7330!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7330!SPC MD       -   0.99999803  x   0.99996542  =   0.99996345
 HV7330!UTM  18      -   0.99999803  x   0.99986825  =   0.99986628
 HV7330
 HV7330:                Primary Azimuth Mark                     Grid Az
 HV7330:SPC MD       -  DOWELL 2 AZ MK                           129 09 14.0
 HV7330:UTM  18      -  DOWELL 2 AZ MK                           130 24 07.0
 HV7330
 HV7330_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5241068770(NAD 83)
 HV7330
 HV7330|---------------------------------------------------------------------|
 HV7330| PID    Reference Object                     Distance      Geod. Az  |
 HV7330|                                                           dddmmss.s |
 HV7330| HV7345 DOWELL 2                              4.445 METERS 01330     |
 HV7330| HV0980 DOWELL AZ MK                                       0184143.8 |
 HV7330| HV7349 CHALK POINT PEPCO MICROWAVE         APPROX. 0.7 KM 0473247.1 |
 HV7330| CX2711 DOWELL 2 AZ MK                                     1292045.8 |
 HV7330| CX2712 DOWELL 2 RM 3                        14.465 METERS 23653     |
 HV7330| CX2709 DOWELL RM 1                          27.720 METERS 24135     |
 HV7330| CX2710 DOWELL RM 2                          32.013 METERS 33035     |
 HV7330|---------------------------------------------------------------------|
 HV7330
 HV7330                          SUPERSEDED SURVEY CONTROL
 HV7330
 HV7330  NAD 83(1991)-  38 33 18.46129(N)    076 41 37.74304(W) AD(       ) 2
 HV7330  NAD 83(1986)-  38 33 18.46025(N)    076 41 37.75740(W) AD(       ) 2
 HV7330  NAD 27      -  38 33 18.02567(N)    076 41 38.88959(W) AD(       ) 2
 HV7330  NGVD 29 (07/19/86)   46.4    (m)          152.     (f) VERT ANG       
 HV7330
 HV7330.Superseded values are not recommended for survey control.
 HV7330
 HV7330.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7330.See file dsdata.pdf to determine how the superseded data were derived.
 HV7330
 HV7330_MARKER: DS = TRIANGULATION STATION DISK
 HV7330_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7330_STAMPING: DOWELL 1943
 HV7330_MARK LOGO: CGS
 HV7330_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7330+STABILITY: SURFACE MOTION
 HV7330
 HV7330  HISTORY     - Date     Condition        Report By
 HV7330  HISTORY     - 1943     MONUMENTED       CGS
 HV7330  HISTORY     - 19581025 GOOD             CGS
 HV7330  HISTORY     - 1970     SEE DESCRIPTION  NGS
 HV7330  HISTORY     - 1977     GOOD             NGS
 HV7330
 HV7330                          STATION DESCRIPTION
 HV7330
 HV7330'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7330'THE STATION IS LOCATED ON A HIGH WOODED HILL BETWEEN THE PATUXENT
 HV7330'RIVER AND SWANSON CREEK AND ON LAND OWNED BY ARTHUR W. DOWELL OF
 HV7330'PRINCE FREDERICK, MD., AND RENTED.  IT IS ON THE HIGHEST POINT OF THE
 HV7330'HILL, 34 FEET EAST BY SOUTH OF THE CENTER OF A WOODS ROAD AND 15 FEET
 HV7330'NORTHEAST OF A TWIN TRUNK LOCUST TREE.  IT IS STAMPED DOWELL 1943 AND
 HV7330'PROJECTS 8 INCHES.
 HV7330'
 HV7330'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE DISKS
 HV7330'SET IN CONCRETE AS DESCRIBED.
 HV7330'
 HV7330'REFERENCE MARK NO. 1 IS SOUTHWEST OF THE STATION, 6 FEET SOUTH OF THE
 HV7330'CENTER OF A WOODS ROAD, STAMPED DOWELL NO. 1 1943 AND PROJECTS 8
 HV7330'INCHES.
 HV7330'
 HV7330'REFERENCE MARK NO. 2 IS NORTHWEST OF THE STATION, 6 FEET WEST OF THE
 HV7330'CENTER OF A WOODS ROAD, STAMPED DOWELL NO. 2 1943 AND PROJECTS 8
 HV7330'INCHES.
 HV7330'
 HV7330'THE AZIMUTH MARK IS ABOUT 0.3 MILE NORTH-NORTHEAST OF THE STATION, 14
 HV7330'FEET WEST OF THE CENTER OF THE ROAD IN A FENCE LINE AND 75 FEET NORTH
 HV7330'OF A TWIN-TRUNKED TREE.  IT IS STAMPED DOWELL 1943 AND PROJECTS 4
 HV7330'INCHES.
 HV7330'
 HV7330'TO REACH FROM THE STATION GO NORTH AND EAST ON THE WOODS ROAD FOR 0.25
 HV7330'MILE TO THE MAIN ROAD, TURN LEFT AND GO 0.15 MILE TO THE MARK ON THE
 HV7330'LEFT AS DESCRIBED.
 HV7330'
 HV7330'TO REACH THE STATION FROM THE MAIN CROSSROAD IN AQUASCO GO SOUTH ON A
 HV7330'MACADAM ROAD FOR 0.55 MILE.  THEN TURN LEFT ON A GRAVEL ROAD AND GO
 HV7330'2.1 MILES TO WHERE MAIN ROAD TURNS LEFT. HERE TURN RIGHT ON A SANDY
 HV7330'ROAD AND GO 0.45 MILE TO A GATE ON THE RIGHT, TURN RIGHT AND FOLLOW
 HV7330'FIELD ROAD 0.15 MILE TO THE SUMMIT OF A WOODED RIDGE, TURN LEFT AND GO
 HV7330'0.15 MILE TO THE HIGHEST POINT OF THE RIDGE, WHERE THE ROAD TURNS
 HV7330'RIGHT, AND THE STATION ON THE LEFT AS DESCRIBED.
 HV7330'
 HV7330'HEIGHT OF LIGHT ABOVE STATION MARK - 30 METERS.
 HV7330
 HV7330                          STATION RECOVERY (1958)
 HV7330
 HV7330'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (EPM)
 HV7330'RECOVERED BY E.P. MILES, POTOMAC ELECTRIC POWER CO., 25 OCTOBER 1958.
 HV7330'ALL MARKS RECOVERED IN GOOD CONDITION.  MARKS ARE ALL LOCATED ON THE
 HV7330'PROPERTY OWNED BY THE POTOMAC ELECTRIC POWER CO.
 HV7330
 HV7330                          STATION RECOVERY (1970)
 HV7330
 HV7330'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7330'THE SURFACE MARK AND REFERENCE MARKS 1 AND 2 HAVE BEEN DESTROYED AND
 HV7330'THE AZIMUTH MARK LOST ACCORDING TO INFORMATION AVAILABLE AT THIS TIME.
 HV7330'STATION DOWELL 2 WAS ESTABLISHED AND AN INVERSE COMPUTATION MADE.
 HV7330'FROM THE RESULTS OF THE INVERSE COMPUTATION THE UNDERGROUND MARK WAS
 HV7330'RECOVERED IN GOOD CONDITION.  DUE TO THE ABOVE CHANGES A NEW
 HV7330'DESCRIPTION FOLLOWS.
 HV7330'
 HV7330'THE STATION IS ABOUT 3 MILES NORTHEAST OF PATUXENT, 2-1/2 MILES
 HV7330'SOUTHEAST OF AQUASCO, 1 MILE NORTHEAST OF THE PRINCE GEORGES-CHARLES
 HV7330'COUNTY LINE, 1 MILE WEST OF THE PRINCE GEORGES-CALVERT COUNTY LINE AND
 HV7330'IN A WOODED AREA ON PROPERTY OWNED BY THE POTOMAC ELECTRIC AND POWER
 HV7330'COMPANY.
 HV7330'
 HV7330'TO REACH THE STATION FROM THE POST OFFICE IN AQUASCO, GO SOUTH ON
 HV7330'STATE HIGHAY 381 FOR 0.25 MILE TO A FORK.  TAKE THE LEFT FORK AND GO
 HV7330'SOUTHEAST ON EAGLE HARBOR ROAD FOR 1.9 MILES TO A FORK.  TAKE THE
 HV7330'RIGHT FORK, THE ENTRANCE ROAD TO THE CHALK POINT GENERATING STATION,
 HV7330'AND GO SOUTH FOR 0.5 MILE TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO
 HV7330'WEST FOR 0.05 MILE TO A GATE AND THE CHALK POINT SWITCHING STATION.
 HV7330'TURN LEFT AND FOLLOW A FENCE WESTERLY AROUND THE SWITCHING STATION FOR
 HV7330'0.05 MILE TO A DIRT ROAD.  TURN LEFT AND GO SOUTH, UPHILL, FOR 0.1
 HV7330'MILE TO A POINT WHERE THE ROAD TURNS LEFT (EAST) AND THE STATION ON
 HV7330'THE RIGHT.
 HV7330'
 HV7330'*TO REACH THE AZIMUTH MARK FROM THIS POINT, CONTINUE SOUTH FOR 0.7
 HV7330'MILE TO THE MARK ON THE LEFT.
 HV7330'
 HV7330'THE STATION MARK IS A STANDARD DISK STAMPED DOWELL 1943, SET IN THE
 HV7330'TOP OF AN IRREGULAR MASS OF CONCRETE THAT IS 24 INCHES BELOW THE
 HV7330'GROUND SURFACE.  THE MARK WAS NOT REFERENCED TO LOCAL OBJECTS.
 HV7330'
 HV7330'DOWELL 2 IS A STANDARD DISK STAMPED DOWELL 2 1970, SET IN THE TOP OF A
 HV7330'ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS 2 INCHES
 HV7330'ABOVE THE GROUND.  IT IS 37.0 FEET EAST OF THE CENTERLINE OF THE ROAD
 HV7330'AS IT TRAVELS SOUTH, 22.0 FEET NORTH OF THE CENTERLINE OF THE ROAD AS
 HV7330'IT TRAVELS EAST AND 4.5 FEET SOUTH OF A WITNESS POST.  THERE IS AN
 HV7330'UNDERGROUND MARK 40 INCHES BELOW THE GROUND SURFACE.
 HV7330'
 HV7330'REFERENCE MARK NO. 3 IS A STANDARD DISK STAMPED DOWELL 2 NO 3 1970,
 HV7330'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7330'PROJECTS 5 INCHES ABOVE THE GROUND.  IT IS 34.0 FEET SOUTHWEST OF THE
 HV7330'CENTERLINE OF THE ROAD AS IT TRAVELS SOUTH, 11.0 FEET SOUTH OF THE
 HV7330'CENTERLINE OF THE ROAD AS IT TRAVELS EAST AND ABOUT THE SAME ELEVATION
 HV7330'AS DOWELL 2.
 HV7330'
 HV7330'THE AZIMUTH MARK IS A STANDARD DISK STAMPED DOWELL 2 1970, SET IN THE
 HV7330'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS 2
 HV7330'INCHES ABOVE THE GROUND.  IT IS 40.0 FEET EAST OF THE CENTERLINE OF
 HV7330'THE ENTRACE ROAD TO THE GENERATING STATION, 4.3 FEET SOUTH OF THE
 HV7330'SOUTHWEST LEG OF A TOWER SUPPORTING HIGH TENSION WIRES, 1.7 FEET EAST
 HV7330'OF A WITNESS POST AND ABOUT 2 FEET LOWER IN ELEVATION THAN THE ROAD.
 HV7330'
 HV7330'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 2-1/2 MILES SOUTHEAST
 HV7330'OF AQUASCO.
 HV7330
 HV7330                          STATION RECOVERY (1977)
 HV7330
 HV7330'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (JLC)
 HV7330'THE STATION WAS RECOVERED AS DESCRIBED IN 1970, WITH THE EXCEPTION
 HV7330'THAT THE DISTANCE TO REFERENCE MARK 3 WAS LONGER BY 0.006 OF A METER.
 HV7330'
 HV7330'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2-1/2 MILES
 HV7330'SOUTHEAST OF AQUASCO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7345 ***********************************************************************
 HV7345  DESIGNATION -  DOWELL 2
 HV7345  PID         -  HV7345
 HV7345  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7345  COUNTRY     -  US
 HV7345  USGS QUAD   -  BENEDICT (2016)
 HV7345
 HV7345                         *CURRENT SURVEY CONTROL
 HV7345  ______________________________________________________________________
 HV7345* NAD 83(1993) POSITION- 38 33 18.60146(N) 076 41 37.69885(W)   ADJUSTED
 HV7345* NAVD 88 ORTHO HEIGHT -    47.0   (meters)      154.    (feet) VERTCON3
 HV7345  ______________________________________________________________________
 HV7345  GEOID HEIGHT    -        -33.584 (meters)                     GEOID18
 HV7345  LAPLACE CORR    -         -3.82  (seconds)                    DEFLEC18
 HV7345  HORZ ORDER      -  FIRST
 HV7345
 HV7345.The horizontal coordinates were established by classical geodetic methods
 HV7345.and adjusted by the National Geodetic Survey in November 1994.
 HV7345
 HV7345.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7345.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7345
 HV7345.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7345.GEOID18 height accuracy estimate available here.
 HV7345
 HV7345.Click photographs - Photos may exist for this station.
 HV7345
 HV7345.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7345
 HV7345. The following values were computed from the NAD 83(1993) position.
 HV7345
 HV7345;                    North         East     Units Scale Factor Converg.
 HV7345;SPC MD       -    98,671.792   426,688.858   MT  0.99996542   +0 11 31.8
 HV7345;SPC MD       -   323,725.70  1,399,895.03   sFT  0.99996542   +0 11 31.8
 HV7345;UTM  18      - 4,268,774.785   352,411.660   MT  0.99986825   -1 03 21.2
 HV7345
 HV7345!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7345!SPC MD       -   0.99999789  x   0.99996542  =   0.99996331
 HV7345!UTM  18      -   0.99999789  x   0.99986825  =   0.99986614
 HV7345
 HV7345:                Primary Azimuth Mark                     Grid Az
 HV7345:SPC MD       -  DOWELL 2 AZ MK                           129 22 34.7
 HV7345:UTM  18      -  DOWELL 2 AZ MK                           130 37 27.7
 HV7345
 HV7345_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5241168774(NAD 83)
 HV7345
 HV7345|---------------------------------------------------------------------|
 HV7345| PID    Reference Object                     Distance      Geod. Az  |
 HV7345|                                                           dddmmss.s |
 HV7345| HV7368 HUNTINGTOWN MICROWAVE TOWER         APPROX. 9.3 KM 0321839.0 |
 HV7345| HV7354 CHALK PT PEPCO MICROWAVE LIGHT      APPROX. 0.7 KM 0473535.6 |
 HV7345| HV7349 CHALK POINT PEPCO MICROWAVE         APPROX. 0.7 KM 0474521.8 |
 HV7345| HV7319 PRINCE FREDERICK RAD MAST           APPROX.10.2 KM 1011350.0 |
 HV7345| HV7320 PRINCE FREDERICK RAD WMJS MAST      APPROX. 8.0 KM 1235852.5 |
 HV7345| HV7355 17374 WSSC 1970                     298.339 METERS 12708     |
 HV7345| CX2711 DOWELL 2 AZ MK                                     1293406.5 |
 HV7345| HV7346 CHALK POINT PEPCO N STACK           APPROX. 1.4 KM 1461547.5 |
 HV7345| HV7352 CHALK PT LARGE GEN STA N STACK      APPROX. 1.4 KM 1511047.5 |
 HV7345| HV7353 CHALK PT LARGE GEN STA S STACK      APPROX. 1.5 KM 1532114.1 |
 HV7345| HV7330 DOWELL                                4.445 METERS 19330     |
 HV7345| CX2712 DOWELL 2 RM 3                        17.957 METERS 22705     |
 HV7345| CX2713 DOWELL 2 RM 4                        21.918 METERS 29241     |
 HV7345|---------------------------------------------------------------------|
 HV7345
 HV7345                          SUPERSEDED SURVEY CONTROL
 HV7345
 HV7345  NAD 83(1991)-  38 33 18.60146(N)    076 41 37.70022(W) AD(       ) 1
 HV7345  NAD 83(1986)-  38 33 18.60044(N)    076 41 37.71457(W) AD(       ) 1
 HV7345  NAD 27      -  38 33 18.16585(N)    076 41 38.84677(W) AD(       ) 1
 HV7345  NGVD 29 (07/19/86)   47.3    (m)          155.     (f) VERT ANG       
 HV7345
 HV7345.Superseded values are not recommended for survey control.
 HV7345
 HV7345.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7345.See file dsdata.pdf to determine how the superseded data were derived.
 HV7345
 HV7345_MARKER: DS = TRIANGULATION STATION DISK
 HV7345_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7345_STAMPING: DOWELL 2 1970
 HV7345_MARK LOGO: CGS
 HV7345_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7345+STABILITY: SURFACE MOTION
 HV7345
 HV7345  HISTORY     - Date     Condition        Report By
 HV7345  HISTORY     - 1970     MONUMENTED       NGS
 HV7345  HISTORY     - 1977     GOOD             NGS
 HV7345
 HV7345                          STATION DESCRIPTION
 HV7345
 HV7345'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7345'THE STATION IS ABOUT 3 MILES NORTHEAST OF PATUXENT, 2-1/2 MILES
 HV7345'SOUTHEAST OF AQUASCO, 1 MILE NORTHEAST OF THE PRINCE
 HV7345'GEORGES-CHARLES COUNTY LINE, 1 MILE WEST OF THE PRINCE
 HV7345'GEORGES-CALVERT COUNTY LINE AND IN A WOODED AREA ON PROPERTY
 HV7345'OWNED BY THE POTOMAC ELECTRIC POWER COMPANY.
 HV7345'
 HV7345'TO REACH THE STATION FROM THE POST OFFICE IN AQUASCO, GO SOUTH ON
 HV7345'STATE HIGHWAY 381 FOR 0.25 TO A FORK.  TAKE THE LEFT FORK, EAGLE
 HV7345'HARBOR ROAD, AND GO SOUTHEAST FOR 1.9 MILES TO A FORK.  TAKE THE
 HV7345'RIGHT FORK, THE ENTRANCE ROAD TO THE CHALK POINT GENERATING
 HV7345'STATION, AND GO SOUTH FOR 0.5 MILE TO A SIDE ROAD RIGHT. TURN
 HV7345'RIGHT AND GO WEST FOR 0.05 MILE TO A GATE AND THE CHALK POINT
 HV7345'SWITCHING STATION.  TURN LEFT AND FOLLOW A FENCE WESTERLY AROUND
 HV7345'THE SWITCHING STATION FOR 0.05 MILE TO A DIRT ROAD. TURN LEFT AND
 HV7345'GO SOUTH, UPHILL, FOR 0.1 TO A POINT WHERE THE ROAD CURVES LEFT
 HV7345'AND THE STATION ON THE RIGHT.
 HV7345'
 HV7345'*TO REACH THE AZIMUTH MARK FROM THIS POINT, CONTINUE SOUTH FOR 0.7
 HV7345'MILE TO THE MARK ON THE LEFT.
 HV7345'
 HV7345'THE STATION MARK IS A STANDARD DISK, STAMPED DOWELL 2 1970, SET IN
 HV7345'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7345'PROJECTS 2 INCHES ABOVE THE GROUND.  IT IS 37.0 FEET EAST OF THE
 HV7345'CENTERLINE OF THE ROAD AS IT TRAVELS SOUTH, 22.0 FEET NORTH OF THE
 HV7345'CENTERLINE OF THE ROAD AS IT TRAVELS EAST AND 4.5 FEET SOUTH OF A
 HV7345'WITNESS POST.  THE UNDERGROUND MARK IS 40 INCHES BELOW THE GROUND
 HV7345'SURFACE.
 HV7345'
 HV7345'DOWELL 1943 IS A STANDARD DISK, STAMPED DOWELL 1943, SET IN AN
 HV7345'IRREGULAR MASS OF CONCRETE THAT IS 24 INCHES BELOW THE GROUND
 HV7345'SURFACE.  NO LOCAL MEASUREMENTS WERE MADE TO LANDMARKS.
 HV7345'
 HV7345'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED DOWELL 2 NO 3 1970,
 HV7345'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7345'THAT PROJECTS 5 INCHES ABOVE THE GROUND SURFACE.  IT IS 34.0 FEET
 HV7345'SOUTHWEST OF THE CENTERLINE OF THE ROAD AS IT TRAVELS SOUTH, 11.0
 HV7345'FEET SOUTH OF THE CENTERLINE OF THE ROAD AS IT TRAVELS EAST AND
 HV7345'ABOUT THE SAME ELEVATION AS THE STATION.
 HV7345'
 HV7345'REFERENCE MARK 4 IS A STANDARD DISK, STAMPED DOWELL 2 NO 4 1970,
 HV7345'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7345'THAT PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 59.0 FEET NORTH OF
 HV7345'THE CENTERLINE OF THE ROAD AS IT TRAVELS EAST, 20.5 FEET WEST OF
 HV7345'THE CENTERLINE OF THE ROAD AS IT TRAVELS SOUTH AND ABOUT 6 FEET
 HV7345'LOWER IN ELEVATION THAN THE STATION.
 HV7345'
 HV7345'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED DOWELL 2 1970, SET IN
 HV7345'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7345'PROJECTS 2 INCHES ABOVE THE GROUND SURFACE.  IT IS 40.0 FEET EAST
 HV7345'OF THE CENTERLINE OF THE ENTRANCE ROAD TO THE CHALK POINT
 HV7345'GENERATING STATION, 4.3 FEET SOUTH OF THE SOUTHWEST LEG OF A HIGH
 HV7345'TENSION TOWER, 1.7 FEET EAST OF A WITNESS POST AND ABOUT 2 FEET
 HV7345'LOWER IN ELEVATION THAN THE ROAD SURFACE.
 HV7345
 HV7345                          STATION RECOVERY (1977)
 HV7345
 HV7345'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (JLC)
 HV7345'THE STATION WAS RECOVERED AS DESCRIBED IN 1970, WITH THE EXCEPTION
 HV7345'THAT THE DISTANCE TO REFERENCE MARK 3 WAS LONGER BY 0.012 METERS.
 HV7345'
 HV7345'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2-1/2 MILES
 HV7345'SOUTHEAST OF AQUASCO.
 HV7345'
 HV7345'HEIGHT OF LIGHT ABOVE STATION MARK 73.3 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0980 ***********************************************************************
 HV0980  DESIGNATION -  DOWELL AZ MK
 HV0980  PID         -  HV0980
 HV0980  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0980  COUNTRY     -  US
 HV0980  USGS QUAD   -  BENEDICT (2016)
 HV0980
 HV0980                         *CURRENT SURVEY CONTROL
 HV0980  ______________________________________________________________________
 HV0980* NAD 83(1986) POSITION- 38 33 30.     (N) 076 41 32.     (W)   SCALED
 HV0980* NAVD 88 ORTHO HEIGHT -    22.582 (meters)       74.09  (feet) ADJUSTED
 HV0980  ______________________________________________________________________
 HV0980  GEOID HEIGHT    -        -33.582 (meters)                     GEOID18
 HV0980  DYNAMIC HEIGHT  -         22.568 (meters)       74.04  (feet) COMP
 HV0980  MODELED GRAVITY -    980,034.7   (mgal)                       NAVD 88
 HV0980
 HV0980  VERT ORDER      -  FIRST     CLASS II
 HV0980
 HV0980.The horizontal coordinates were scaled from a map and have
 HV0980.an estimated accuracy of +/- 6 seconds.
 HV0980
 HV0980.The orthometric height was determined by differential leveling and
 HV0980.adjusted by the NATIONAL GEODETIC SURVEY
 HV0980.in June 1991.
 HV0980
 HV0980.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0980.GEOID18 height accuracy estimate available here.
 HV0980
 HV0980.Click photographs - Photos may exist for this station.
 HV0980
 HV0980.The dynamic height is computed by dividing the NAVD 88
 HV0980.geopotential number by the normal gravity value computed on the
 HV0980.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0980.degrees latitude (g = 980.6199 gals.).
 HV0980
 HV0980.The modeled gravity was interpolated from observed gravity values.
 HV0980
 HV0980;                    North         East    Units  Estimated Accuracy
 HV0980;SPC MD       -    99,020.      426,830.      MT  (+/- 180 meters Scaled)
 HV0980
 HV0980_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH525691(NAD 83)
 HV0980
 HV0980                          SUPERSEDED SURVEY CONTROL
 HV0980
 HV0980  NGVD 29 (11/26/84)   22.845  (m)           74.95   (f) ADJUSTED    1 2
 HV0980
 HV0980.Superseded values are not recommended for survey control.
 HV0980
 HV0980.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0980.See file dsdata.pdf to determine how the superseded data were derived.
 HV0980
 HV0980_MARKER: DZ = AZIMUTH MARK DISK
 HV0980_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0980_STAMPING: DOWELL 1943
 HV0980_MARK LOGO: CGS
 HV0980_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0980+STABILITY: SURFACE MOTION
 HV0980
 HV0980  HISTORY     - Date     Condition        Report By
 HV0980  HISTORY     - 1943     MONUMENTED       CGS
 HV0980  HISTORY     - 1964     GOOD             CGS
 HV0980
 HV0980                          STATION DESCRIPTION
 HV0980
 HV0980'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 HV0980'2.3 MI SE FROM AQUASCO.
 HV0980'1.9 MILES SOUTHEAST ALONG THE EAGLE HARBOR ROAD FROM THE JUNCTION
 HV0980'OF STATE HIGHWAY 381 AT AQUASCO, THENCE 0.4 MILES SOUTH ON ACCESS
 HV0980'ROAD TO CHALK POINT, APPROXIMATELY 250 FEET SOUTH OF ACCESS ROAD
 HV0980'TO SWITCHYARD, 85 FEET WEST OF CENTER OF ACCESS ROAD TO CHALK
 HV0980'POINT, 1.7 FEET EAST OF A METAL WITNESS MARKER, AND IN TOP OF
 HV0980'A CONCRETE POST PROJECTING 5 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4972 ***********************************************************************
 JV4972  DESIGNATION -  DOWN
 JV4972  PID         -  JV4972
 JV4972  STATE/COUNTY-  MD/QUEEN ANNES
 JV4972  COUNTRY     -  US
 JV4972  USGS QUAD   -  CHESTERTOWN (2017)
 JV4972
 JV4972                         *CURRENT SURVEY CONTROL
 JV4972  ______________________________________________________________________
 JV4972* NAD 83(1991) POSITION- 39 09 04.05200(N) 076 04 00.47910(W)   ADJUSTED
 JV4972* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4972  ______________________________________________________________________
 JV4972  GEOID HEIGHT    -        -33.530 (meters)                     GEOID18
 JV4972  LAPLACE CORR    -         -2.42  (seconds)                    DEFLEC18
 JV4972  HORZ ORDER      -  THIRD
 JV4972
 JV4972.The horizontal coordinates were established by classical geodetic methods
 JV4972.and adjusted by the National Geodetic Survey in January 1992.
 JV4972
 JV4972.The orthometric height was scaled from a topographic map.
 JV4972
 JV4972.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4972.GEOID18 height accuracy estimate available here.
 JV4972
 JV4972.Click photographs - Photos may exist for this station.
 JV4972
 JV4972.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4972
 JV4972. The following values were computed from the NAD 83(1991) position.
 JV4972
 JV4972;                    North         East     Units Scale Factor Converg.
 JV4972;SPC MD       -   165,195.261   480,663.011   MT  0.99996136   +0 35 08.5
 JV4972;SPC MD       -   541,978.12  1,576,975.23   sFT  0.99996136   +0 35 08.5
 JV4972;UTM  18      - 4,334,089.216   407,819.677   MT  0.99970463   -0 40 24.9
 JV4972
 JV4972!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4972!SPC MD       -   1.00000530  x   0.99996136  =   0.99996666
 JV4972!UTM  18      -   1.00000530  x   0.99970463  =   0.99970993
 JV4972
 JV4972:                Primary Azimuth Mark                     Grid Az
 JV4972:SPC MD       -  BILL                                     253 16 28.8
 JV4972:UTM  18      -  BILL                                     254 32 02.2
 JV4972
 JV4972_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0781934089(NAD 83)
 JV4972
 JV4972|---------------------------------------------------------------------|
 JV4972| PID    Reference Object                     Distance      Geod. Az  |
 JV4972|                                                           dddmmss.s |
 JV4972| JV4986 BILL                                APPROX. 0.7 KM 2535137.3 |
 JV4972|---------------------------------------------------------------------|
 JV4972
 JV4972                          SUPERSEDED SURVEY CONTROL
 JV4972
 JV4972  NAD 83(1986)-  39 09 04.04536(N)    076 04 00.49165(W) AD(       ) 3
 JV4972  NAD 27      -  39 09 03.65500(N)    076 04 01.68400(W) AD(       ) 3
 JV4972  USSD        -  39 09 04.07600(N)    076 04 01.45600(W) AD(       ) 3
 JV4972
 JV4972.Superseded values are not recommended for survey control.
 JV4972
 JV4972.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4972.See file dsdata.pdf to determine how the superseded data were derived.
 JV4972
 JV4972_MARKER: H = DRILL HOLE
 JV4972_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4972_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4972+STABILITY: SURFACE MOTION
 JV4972
 JV4972  HISTORY     - Date     Condition        Report By
 JV4972  HISTORY     - 1909     MONUMENTED       MDSFC
 JV4972  HISTORY     - 1961     GOOD             CGS
 JV4972  HISTORY     - 1976     GOOD             MDDNR
 JV4972
 JV4972                          STATION DESCRIPTION
 JV4972
 JV4972'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV4972'STATION IS ON THE SOUTHEASTERN SHORE OF UPPER CHESTER RIVER, ABOUT 1
 JV4972'MILE SW OF ENTRANCE TO SOUTHEAST CREEK, AND 1 MILE E OF ENTRANCE TO
 JV4972'BROWNS CREEK, ON A SMALL ROUNDED POINT OF SAND MARSH, ABOUT 1 FOOT
 JV4972'ABOVE HIGH WATER, 5 YARDS S OF SHORE, 40 YARDS E BY S OF AN INLET,
 JV4972'AND 95 YARDS W OF A FENCE BEYOND TREES.
 JV4972'
 JV4972'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV4972'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV4972'2 FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES.  THE LETTERS
 JV4972'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV4972'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV4972'INCHES BELOW THE BASE OF THE MONUMENT.
 JV4972'
 JV4972'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV4972'FOLLOWS--NAIL IN BLAZE IN 3-INCH PEAR TREE, 14.34 METERS (47.1
 JV4972'FEET), S 62 DEG 22 MIN W. E PEAK OF LARGE BARN, 1 MILE, N 72 DEG 31
 JV4972'MIN W. CHIMNEY OF HOUSE, 1-1/2 MILES,N 30 DEG 15 MIN W.  RIGHT PEAK
 JV4972'OF SMALL HOUSE NEAR ROLPHS WHARF, 2-1/4 MILES, N 47 DEG 46 MIN E.
 JV4972'LEFT PEAK OF TALLER OF TWO BARNS, 1/2 MILE, S 88 DEG 51 MIN E.
 JV4972'NAIL IN BLAZE IN 5-INCH CEDAR TREE, 52.50 METERS (172.2 FEET),
 JV4972'S 54 DEG 02 MIN E. NAIL IN BLAZE IN 5-INCH CEDAR TREE, 47.18
 JV4972'METERS (154.8 FEET), S 31 DEG 42 MIN E.
 JV4972
 JV4972                          STATION RECOVERY (1961)
 JV4972
 JV4972'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV4972'STATION MARK RECOVERED IN GOOD CONDITION.  STATION IS NOW ON THE
 JV4972'M.H.W.L., PROJECTS 1 INCH AND IS 60.7 FT. NE OF THE MOST
 JV4972'NORTHEASTERLY CEDAR OF A GROUP OF TREES.  A 4 FT. COPPERWELD STAKE
 JV4972'WAS PLACED BESIDE THE STATION.
 JV4972
 JV4972                          STATION RECOVERY (1976)
 JV4972
 JV4972'RECOVERY NOTE BY MD DEPT OF NAT RES 1976 (GEH)
 JV4972'MSFC-USCS FAIR
 JV4972'
 JV4972'CONC. MON. RECOVD. IN 2 FT OF WATER LEANING TOWARD E.  NO CASTING
 JV4972'COULD BE FELT IN TOP.  COPPERWELD STK. WAS NOT RECOVD. AND CEDAR
 JV4972'TREES HAVE BEEN WASHED DOWN.  SITE SHOULD BE VISITED AT LOW TIDE
 JV4972'TO DETERMINE IF CONC. POST IS STA.  NO SIGN WAS PLACED ON WITNESS
 JV4972'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2107 ***********************************************************************
 HU2107  DESIGNATION -  DOWNES
 HU2107  PID         -  HU2107
 HU2107  STATE/COUNTY-  MD/CAROLINE
 HU2107  COUNTRY     -  US
 HU2107  USGS QUAD   -  FOWLING CREEK (2017)
 HU2107
 HU2107                         *CURRENT SURVEY CONTROL
 HU2107  ______________________________________________________________________
 HU2107* NAD 83(1991) POSITION- 38 49 22.38922(N) 075 52 40.35601(W)   ADJUSTED
 HU2107* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU2107  ______________________________________________________________________
 HU2107  GEOID HEIGHT    -        -34.910 (meters)                     GEOID18
 HU2107  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 HU2107  HORZ ORDER      -  THIRD
 HU2107
 HU2107.The horizontal coordinates were established by classical geodetic methods
 HU2107.and adjusted by the National Geodetic Survey in January 1992.
 HU2107
 HU2107.The orthometric height was scaled from a topographic map.
 HU2107
 HU2107.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2107.GEOID18 height accuracy estimate available here.
 HU2107
 HU2107.Click photographs - Photos may exist for this station.
 HU2107
 HU2107.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2107
 HU2107. The following values were computed from the NAD 83(1991) position.
 HU2107
 HU2107;                    North         East     Units Scale Factor Converg.
 HU2107;SPC MD       -   128,943.951   497,440.083   MT  0.99995027   +0 42 15.4
 HU2107;SPC MD       -   423,043.61  1,632,018.01   sFT  0.99995027   +0 42 15.4
 HU2107;UTM  18      - 4,297,488.357   423,793.324   MT  0.99967151   -0 33 01.4
 HU2107
 HU2107!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2107!SPC MD       -   1.00000520  x   0.99995027  =   0.99995547
 HU2107!UTM  18      -   1.00000520  x   0.99967151  =   0.99967671
 HU2107
 HU2107:                Primary Azimuth Mark                     Grid Az
 HU2107:SPC MD       -  DOWNES AZ MK                             009 21 28.6
 HU2107:UTM  18      -  DOWNES AZ MK                             010 36 45.4
 HU2107
 HU2107_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2379397488(NAD 83)
 HU2107
 HU2107|---------------------------------------------------------------------|
 HU2107| PID    Reference Object                     Distance      Geod. Az  |
 HU2107|                                                           dddmmss.s |
 HU2107| DC7242 DOWNES AZ MK                                       0100344.0 |
 HU2107| HU2100 DENTON MUNICIPAL TANK               APPROX. 8.3 KM 0310451.9 |
 HU2107| DC7243 DOWNES RM 1                          30.343 METERS 07050     |
 HU2107| DC7244 DOWNES RM 2                          61.204 METERS 32801     |
 HU2107|---------------------------------------------------------------------|
 HU2107
 HU2107                          SUPERSEDED SURVEY CONTROL
 HU2107
 HU2107  NAD 83(1986)-  38 49 22.38400(N)    075 52 40.37064(W) AD(       ) 3
 HU2107  NAD 27      -  38 49 21.97600(N)    075 52 41.60400(W) AD(       ) 3
 HU2107
 HU2107.Superseded values are not recommended for survey control.
 HU2107
 HU2107.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2107.See file dsdata.pdf to determine how the superseded data were derived.
 HU2107
 HU2107_MARKER: DS = TRIANGULATION STATION DISK
 HU2107_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2107_STAMPING: DOWNES 1934
 HU2107_MARK LOGO: CGS
 HU2107_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2107+STABILITY: SURFACE MOTION
 HU2107
 HU2107  HISTORY     - Date     Condition        Report By
 HU2107  HISTORY     - 1934     MONUMENTED       CGS
 HU2107  HISTORY     - 1943     GOOD             CGS
 HU2107
 HU2107                          STATION DESCRIPTION
 HU2107
 HU2107'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU2107'THIS SECOND-ORDER STATION IS LOCATED 11 MILES NNE OF EASTON,
 HU2107'MARYLAND 15 FEET N OF THE TOP OF THE BANK OF THE CHOPTANK RIVER,
 HU2107'ABOUT 127 PACES ENE OF DOWNES LANDING, 26 FEET ESE OF AN 18-INCH
 HU2107'PINE TREE, 18 PACES E OF THE W FENCE OF THE PASTURE.  MARK
 HU2107'PROJECTS 4 INCHES.  STATION IS LOCATED ON THE PROPERTY OF
 HU2107'MR. PHILIPS DOWNES.
 HU2107'
 HU2107'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HU2107'DISKS SET IN CONCRETE.
 HU2107'
 HU2107'REFERENCE MARK NO.1 IS LOCATED E OF THE STATION, 3 FEET N OF
 HU2107'THE TOP OF THE BANK OF THE CHOPTANK RIVER, 13 PACES E OF A
 HU2107'10-INCH BIRCH TREE, 5 PACES NW OF A 3-INCH TREE THAT HAS
 HU2107'CLUSTERS OF SMALL BUDS ON THE LIMBS.  MARK PROJECTS 4
 HU2107'INCHES.  REFERENCE MARK NO.2 IS LOCATED NW OF THE STATION, 1 FOOT
 HU2107'E OF THE PASTURE FENCE, 3 FEET SE OF A 10-INCH WALNUT TREE.
 HU2107'MARK PROJECTS 5 INCHES.
 HU2107'
 HU2107'AZIMUTH MARK IS LOCATED N OF THE STATION, 2 FEET S OF THE N FENCE
 HU2107'OF THE FIELD JUST N OF THE BARN, ABOUT 150 YARDS E OF THE NW
 HU2107'CORNER.  MARK PROJECTS 6 INCHES.  TO REACH FROM THE STATION, GO
 HU2107'TO THE PASTURE GATE AT THE BARN AND GO THROUGH THE BARNYARD TO A
 HU2107'GATE BACK OF THE BARN.  GO THROUGH THIS GATE AND BEAR LEFT TO THE
 HU2107'N FENCE CORNER TURN RIGHT ALONG THE FENCE AND GO 150 YARDS TO
 HU2107'THE MARK.  MARK PROJECTS 4 INCHES.
 HU2107'
 HU2107'TO REACH THIS STATION FROM DENTON COURTHOUSE, GO W 0.4 MILE TO
 HU2107'W END OF THE BRIDGE OVER THE CHOPTANK RIVER.  TURN LEFT AND GO
 HU2107'4.4 MILES TO A CROSS ROAD WITH A JOG (THIS JOG IS BEING GRADED
 HU2107'OUT AND WILL BE A STRAIGHT CROSSING).  TURN LEFT AND GO 1.3 MILES
 HU2107'TO THE DOWNES HOME.  GO THROUGH THE BARNYARD PASSING THE
 HU2107'GRAINERIES ON THE RIGHT TO A GATE IN THE PASTURE.  GO THROUGH
 HU2107'THE GATE AND GO 0.4 MILE TO THE SE CORNER OF THE PASTURE AND
 HU2107'THE STATION.
 HU2107'
 HU2107'77-FOOT TOWER WILL CLEAR ALL LINES.
 HU2107'
 HU2107'NO CUT-INS VISIBLE FROM GROUND.
 HU2107
 HU2107                          STATION RECOVERY (1943)
 HU2107
 HU2107'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HU2107'RECOVERED AS DESCRIBED.  DESCRIPTION ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1534 ***********************************************************************
 HU1534  DESIGNATION -  DOWNS
 HU1534  PID         -  HU1534
 HU1534  STATE/COUNTY-  MD/WORCESTER
 HU1534  COUNTRY     -  US
 HU1534  USGS QUAD   -  BERLIN (2016)
 HU1534
 HU1534                         *CURRENT SURVEY CONTROL
 HU1534  ______________________________________________________________________
 HU1534* NAD 83(2011) POSITION- 38 20 48.72039(N) 075 10 45.66711(W)   ADJUSTED
 HU1534* NAD 83(2011) ELLIP HT-   -29.240 (meters)        (03/04/17)   ADJUSTED
 HU1534* NAD 83(2011) EPOCH   -  2010.00
 HU1534* NAVD 88 ORTHO HEIGHT -     6.770 (meters)       22.21  (feet) ADJUSTED
 HU1534  ______________________________________________________________________
 HU1534  GEOID HEIGHT    -        -36.011 (meters)                     GEOID18
 HU1534  NAD 83(2011) X  -  1,281,173.301 (meters)                     COMP
 HU1534  NAD 83(2011) Y  - -4,841,980.306 (meters)                     COMP
 HU1534  NAD 83(2011) Z  -  3,935,693.981 (meters)                     COMP
 HU1534  LAPLACE CORR    -         -0.57  (seconds)                    DEFLEC18
 HU1534  DYNAMIC HEIGHT  -          6.766 (meters)       22.20  (feet) COMP
 HU1534  MODELED GRAVITY -    980,008.5   (mgal)                       NAVD 88
 HU1534
 HU1534  VERT ORDER      -  SECOND    CLASS I
 HU1534
 HU1534  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1534  Standards:
 HU1534         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1534            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1534  -------------------------------------------------------------------
 HU1534  NETWORK    0.67   1.37           0.30   0.24   0.70     -0.19208864
 HU1534  -------------------------------------------------------------------
 HU1534  Click here for local accuracies and other accuracy information.
 HU1534
 HU1534.The horizontal coordinates were established by GPS observations
 HU1534.and adjusted by the ARCHER-SHEE LAND SURVEYING in March 2017.
 HU1534
 HU1534.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1534.been affixed to the stable North American tectonic plate. See 
 HU1534.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1534
 HU1534.The horizontal coordinates are valid at the epoch date displayed above
 HU1534.which is a decimal equivalence of Year/Month/Day.
 HU1534
 HU1534.The orthometric height was determined by differential leveling and
 HU1534.adjusted by the NATIONAL GEODETIC SURVEY
 HU1534.in November 1994.
 HU1534
 HU1534.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1534.GEOID18 height accuracy estimate available here.
 HU1534
 HU1534.Click photographs - Photos may exist for this station.
 HU1534
 HU1534.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1534
 HU1534.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1534
 HU1534.The ellipsoidal height was determined by GPS observations
 HU1534.and is referenced to NAD 83.
 HU1534
 HU1534.The dynamic height is computed by dividing the NAVD 88
 HU1534.geopotential number by the normal gravity value computed on the
 HU1534.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1534.degrees latitude (g = 980.6199 gals.).
 HU1534
 HU1534.The modeled gravity was interpolated from observed gravity values.
 HU1534
 HU1534. The following values were computed from the NAD 83(2011) position.
 HU1534
 HU1534;                    North         East     Units Scale Factor Converg.
 HU1534;SPC MD       -    77,092.197   559,144.053   MT  0.99999218   +1 08 33.7
 HU1534;SPC MD       -   252,926.65  1,834,458.45   sFT  0.99999218   +1 08 33.7
 HU1534;UTM  18      - 4,244,316.967   484,327.828   MT  0.99960302   -0 06 40.6
 HU1534
 HU1534!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1534!SPC MD       -   1.00000459  x   0.99999218  =   0.99999677
 HU1534!UTM  18      -   1.00000459  x   0.99960302  =   0.99960761
 HU1534
 HU1534:                Primary Azimuth Mark                     Grid Az
 HU1534:SPC MD       -  DOWNS AZ MK                              247 19 50.6
 HU1534:UTM  18      -  DOWNS AZ MK                              248 35 04.9
 HU1534
 HU1534_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8432744316(NAD 83)
 HU1534
 HU1534|---------------------------------------------------------------------|
 HU1534| PID    Reference Object                     Distance      Geod. Az  |
 HU1534|                                                           dddmmss.s |
 HU1534| DC7245 DOWNS RM 1                           24.768 METERS 06326     |
 HU1534| HU1531 OCEAN DOWNS WATER TANK              APPROX. 1.3 KM 0751539.4 |
 HU1534| HU1488 OCEAN CITY CEN MUNICIPAL TANK       APPROX. 8.6 KM 0911302.6 |
 HU1534| HU1490 OCEAN CITY S MUNICIPAL TANK         APPROX. 8.2 KM 1044856.7 |
 HU1534| CR8753 DOWNS RM 3                           31.831 METERS 15429     |
 HU1534| DC7246 DOWNS RM 2                           25.392 METERS 17700     |
 HU1534| HU1528 BERLIN MUNICIPAL TANK               APPROX. 3.9 KM 2435420.3 |
 HU1534| HU2125 DOWNS AZ MK                         466.577 METERS 2482824.3 |
 HU1534|---------------------------------------------------------------------|
 HU1534
 HU1534                          SUPERSEDED SURVEY CONTROL
 HU1534
 HU1534  NAD 83(1991)-  38 20 48.72234(N)    075 10 45.66524(W) AD(       ) 2
 HU1534  NAD 83(1986)-  38 20 48.70656(N)    075 10 45.69294(W) AD(       ) 2
 HU1534  NAD 27      -  38 20 48.29400(N)    075 10 47.01400(W) AD(       ) 2
 HU1534  NGVD 29 (02/25/92)    7.014  (m)           23.01   (f) ADJUSTED    2 1
 HU1534
 HU1534.Superseded values are not recommended for survey control.
 HU1534
 HU1534.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1534.See file dsdata.pdf to determine how the superseded data were derived.
 HU1534
 HU1534_MARKER: DS = TRIANGULATION STATION DISK
 HU1534_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1534_STAMPING: DOWNS 1955
 HU1534_MARK LOGO: CGS
 HU1534_PROJECTION: RECESSED 3 CENTIMETERS
 HU1534_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1534+STABILITY: SURFACE MOTION
 HU1534_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1534+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2016
 HU1534
 HU1534  HISTORY     - Date     Condition        Report By
 HU1534  HISTORY     - 1955     MONUMENTED       CGS
 HU1534  HISTORY     - 1958     GOOD             CGS
 HU1534  HISTORY     - 1961     GOOD             CGS
 HU1534  HISTORY     - 1962     GOOD             CGS
 HU1534  HISTORY     - 1984     GOOD             NGS
 HU1534  HISTORY     - 1991     GOOD             USPSQD
 HU1534  HISTORY     - 1991     GOOD             USPSQD
 HU1534  HISTORY     - 19910514 GOOD             MDSHA
 HU1534  HISTORY     - 20020205 GOOD             USPSQD
 HU1534  HISTORY     - 20031228 GOOD             USPSQD
 HU1534  HISTORY     - 20051220 GOOD             USPSQD
 HU1534  HISTORY     - 20150920 GOOD             BASE9
 HU1534  HISTORY     - 20160220 GOOD             ARCSHE
 HU1534
 HU1534                          STATION DESCRIPTION
 HU1534
 HU1534'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 HU1534'THE STATION IS LOCATED ABOUT 2-1/2 MILES NORTHEAST OF BERLIN,
 HU1534'1 MILE SOUTH OF THE OCEAN DOWNS RACE TRACK, ON THE RIGHT-OF-WAY OF
 HU1534'U.S. HIGHWAY 50.  IT IS 90 FEET EAST OF THE CENTER OF A GRAVELED
 HU1534'ROAD AND 54 FEET NORTH OF THE CENTER OF THE NORTH LANE OF THE
 HU1534'HIGHWAY.
 HU1534'
 HU1534'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 50 AND
 HU1534'113 AT THE NORTH EDGE OF BERLIN, GO EASTERLY ON HIGHWAY 50 FOR
 HU1534'2.25 MILES TO THE AZIMUTH MARK ON THE LEFT, CONTINUE EASTERLY FOR
 HU1534'0.25 MILE TO THE STATION ON THE LEFT.
 HU1534'
 HU1534'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 HU1534'STAMPED DOWNS 1955.
 HU1534'
 HU1534'REFERENCE MARK 1 IS 61 FEET NORTH OF THE CENTER OF THE NORTH
 HU1534'LANE OF THE HIGHWAY.  THE MARK IS FLUSH WITH THE GROUND, AND THE
 HU1534'DISK IS STAMPED DOWNS NO 1 1955.
 HU1534'
 HU1534'REFERENCE MARK 2 IS 26 FEET SOUTH OF THE CENTER OF THE NORTH LANE
 HU1534'OF THE HIGHWAY.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK
 HU1534'IS STAMPED DOWNS NO 2 1955.
 HU1534'
 HU1534'THE AZIMUTH MARK IS 55 FEET NORTH OF THE CENTER OF THE NORTH LANE
 HU1534'OF THE HIGHWAY AND 11 FEET SOUTH OF A 4 IN X 4 IN WHITE WITNESS
 HU1534'POST.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 HU1534'DOWNS 1955.
 HU1534'
 HU1534'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HU1534
 HU1534                          STATION RECOVERY (1958)
 HU1534
 HU1534'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1534'STATION AND REFERENCE MARKS WERE RECOVERED AND FOUND TO BE IN
 HU1534'GOOD CONDITION.
 HU1534'
 HU1534'THE STATION IS 23 PACES SE OF A SMALL CEMETERY THAT SITS IN A
 HU1534'SMALL CLUMP OF PINES.
 HU1534'
 HU1534'TO REACH THE STATION FROM THE JUNCTION OF OLD U.S. HIGHWAY 50
 HU1534'AND THE NEW 4-LANE U.S. HIGHWAY 113 IN THE NORTHEASTERLY PART OF
 HU1534'BERLIN GO EAST OF U.S. HIGHWAY 50 FOR 1.2 TO THE STEPHEN DECATUR
 HU1534'HIGH SCHOOL ON THE RIGHT.  CONTINUE ON U.S. HIGHWAY 50 FOR 0.3
 HU1534'MILE TO AZIMUTH MARK ON THE LEFT.  CONTINUE E ON U.S. HIGHWAY 50
 HU1534'FOR 0.3 MILE TO CLUMP OF PINES ON THE LEFT AND STATION.
 HU1534
 HU1534                          STATION RECOVERY (1961)
 HU1534
 HU1534'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RMS)
 HU1534'THE STATION MARK AND REFERENCE MARKS NO. 1 AND NO. 2 AND THE AZIMUTH
 HU1534'MARK WERE RECOVERED IN GOOD CONDITION.  THE DISTANCES TO THE
 HU1534'REFERENCE MARKS WERE VERIFIED.  THE PUBLISHED DESCRIPTION IS
 HU1534'ADEQUATE WITH THE FOLLOWING ADDITIONS--THE AZIMUTH MARK IS 255.7
 HU1534'FT. SE OF THE SE CORNER OF A CONCRETE BLOCK BUILDING, 119.0 FT
 HU1534'SE OF A 10 INCH PINE AND 92.4 FT W OF A 10 INCH OAK TREE.
 HU1534
 HU1534                          STATION RECOVERY (1962)
 HU1534
 HU1534'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (CFO)
 HU1534'THE STATION, AZIMUTH MARK AND REFERENCE MARKS 1 AND 2 WERE
 HU1534'RECOVERED AS DESCRIBED AND FOUND TO BE IN GOOD CONDITION.
 HU1534'
 HU1534'THE STATION IS ADEQUATELY DESCRIBED.
 HU1534'
 HU1534'THE TO REACH WAS NOT CHECKED.
 HU1534
 HU1534                          STATION RECOVERY (1984)
 HU1534
 HU1534'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984 (CLN)
 HU1534'THE STATION MARK, REFERENCE MARK ONE AND THE AZIMUTH MARK WERE
 HU1534'RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK TWO WAS FOUND
 HU1534'DESTROYED.  A NEW REFERENCE MARK THREE WAS ESTABLISHED.  A SHORTER
 HU1534'DISTANCE OF 0.010 METERS OR 0.03 FT WAS NOTED AND VERIFIED IN THE
 HU1534'MEASUREMENT TO REFERENCE MARK ONE.  ALL OTHER DISTANCES AND DIRECTIONS
 HU1534'WERE WITHIN CLOSE AGREEMENT WITH THE MOST RECENT INFORMATION
 HU1534'AVAILABLE.
 HU1534'
 HU1534'A COMPLETE NEW DESCRIPTION FOLLOWS.
 HU1534'
 HU1534'THE STATION IS LOCATED ABOUT 10.5 KM (6.5 MI) WEST OF OCEAN CITY, 9.75
 HU1534'KM (6 MI) SOUTH OF BISHOP, 2.5 KM (1.5 MI) NORTH-NORTHEAST OF BERLIN,
 HU1534'AND JUST NORTHEAST FROM A CROSS-OVER ON U.S. HIGHWAY 50.
 HU1534'OWNERSHIP--ROAD RIGHT-OF-WAY
 HU1534'
 HU1534'TO REACH THE STATION FROM THE INTERSECTION OF US HIGHWAYS 50 AND 113
 HU1534'NEAR BERLIN, GO EAST FOR 3.05 KM (1.9 MI) ON U.S. HIGHWAY 50 TO THE
 HU1534'STATION ON THE LEFT.
 HU1534'
 HU1534'THE STATION IS A STANDARD CGS DISK STAMPED ---DOWNS 1955---, SET INTO
 HU1534'THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER FLUSH WITH
 HU1534'GROUND.  LOCATED 16.1 METERS (52.9 FT) NORTH-NORTHWEST FROM THE CENTER
 HU1534'OF THE WEST BOUND LANE OF US HIGHWAY 50, 10.9 METERS (35.7 FT) EAST
 HU1534'FROM A POWERLINE POLE NUMBERED 58889 92414, 27.3 METERS (89.7 FT)
 HU1534'EAST-NORTHEAST FROM THE CENTER OF A FIELD ENTRANCE ROAD, 10.7 METERS
 HU1534'(35.1 FT) EAST FROM A CARSONITE WITNESS POST AND 30.4 METERS (99.6 FT)
 HU1534'WEST-SOUTHWEST FROM A 8-INCH OAK TREE.
 HU1534'
 HU1534'REFERENCE MARK NO. 1 IS A STANDARD CGS DISK STAMPED
 HU1534'---DOWNS NO 1 1955---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 HU1534'30 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 18.3 METERS (60.0 FT)
 HU1534'NORTH-NORTHWEST FROM THE CENTER OF THE WEST BOUND LANE OF U.S. HIGHWAY
 HU1534'50, 34.9 METERS (114.6 FT) EAST FROM THE WITNESS POST, 6.1 METERS
 HU1534'(20.0 FT) WEST FROM A 8-INCH OAK TREE AND 2.0 METERS (6.5 FT)
 HU1534'SOUTH-SOUTHEAST FROM THE SOUTHERLY EDGE OF A CULTIVATED FIELD.
 HU1534'
 HU1534'REFERENCE MARK NO. 3 IS A STANDARD NGS DISK STAMPED
 HU1534'---DOWNS 1955 NO 3 1984---, SET INTO THE TOP OF A ROUND CONCRETE
 HU1534'MONUMENT 30 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 6.9 METERS
 HU1534'(22.7 FT) NORTH-NORTHWEST FROM THE CENTER OF THE EAST BOUND LANE OF
 HU1534'U.S. HIGHWAY 50, 15.7 METERS (51.4 FT) SOUTH-SOUTHEAST FROM THE CENTER
 HU1534'OF THE WEST BOUND LANE OF U.S. HIGHWAY 50, 27.6 METERS (90.6 FT)
 HU1534'EAST-NORTHEAST FROM THE CENTER OF THE CROSS-OVER AND 37.1 METERS
 HU1534'(121.8 FT) SOUTHEAST FROM THE WITNESS POST.
 HU1534'
 HU1534'AZIMUTH MARK NO. 1 IS A STANDARD CGS DISK STAMPED ---DOWNS 1955---,
 HU1534'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER FLUSH
 HU1534'WITH GROUND.  LOCATED 16.6 METERS (54.6 FT) NORTH-NORTHWEST FROM THE
 HU1534'CENTER OF THE WEST BOUND LANE OF U.S. HIGHWAY 50, 31.2 METERS
 HU1534'(102.3 FT) WEST FROM A CATCH BASIN, 28.2 METERS (92.4 FT) SOUTHWEST
 HU1534'FROM AN 18-INCH GUM TREE AND 22.8 METERS (74.8 FT) SOUTHWEST FROM A
 HU1534'CARSONITE WITNESS POST.  TO REACH THE AZIMUTH FROM THE STATION, GO
 HU1534'WEST FOR 0.45 KM (0.3 MI) ON U.S. HIGHWAY 50 TO THE MARK ON THE RIGHT.
 HU1534
 HU1534                          STATION RECOVERY (1991)
 HU1534
 HU1534'RECOVERY NOTE BY US POWER SQUADRON 1991 (TGJ)
 HU1534'RECOVERED IN GOOD CONDITION.
 HU1534
 HU1534                          STATION RECOVERY (1991)
 HU1534
 HU1534'RECOVERY NOTE BY US POWER SQUADRON 1991 (THJ)
 HU1534'RECOVERED IN GOOD CONDITION.
 HU1534
 HU1534                          STATION RECOVERY (1991)
 HU1534
 HU1534'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU1534'THE MARK IS LOCATED ABOUT 5.5 MI (8.9 KM) WEST OF OCEAN CITY, 2.7 MI
 HU1534'(4.3 KM) NORTHEAST OF BERLIN AND ON ROAD RIGHT-OF-WAY.
 HU1534'
 HU1534'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR
 HU1534'BERLIN, GO EAST ON U.S. HIGHWAY 50 FOR 3.05 KM (1.90 MI) TO THE MARK
 HU1534'ON THE LEFT.
 HU1534'
 HU1534'IT IS 30.4 M (99.7 FT) WEST-SOUTHWEST OF A 0.7 FT (0.2 M) OAK TREE,
 HU1534'27.3 M (89.6 FT) EAST-NORTHEAST OF THE CENTER OF A FIELD ENTRANCE,
 HU1534'16.1 M (52.8 FT) NORTH-NORTHWEST OF THE CENTER LINE OF THE WESTBOUND
 HU1534'LANES OF THE HIGHWAY, 10.9 M (35.8 FT) EAST OF POWERLINE POLE NUMBER
 HU1534'58889-92414, 10.7 M (35.1 FT) EAST OF A CARSONITE WITNESS POST AND SET
 HU1534'IN THE TOP OF A 1.0 FT (0.3 M) ROUND CONCRETE POST FLUSH WITH THE
 HU1534'GROUND.
 HU1534
 HU1534                          STATION RECOVERY (2002)
 HU1534
 HU1534'RECOVERY NOTE BY US POWER SQUADRON 2002 (PMF)
 HU1534'RECOVERED IN GOOD CONDITION.
 HU1534
 HU1534                          STATION RECOVERY (2003)
 HU1534
 HU1534'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU1534'RECOVERED IN GOOD CONDITION.
 HU1534
 HU1534                          STATION RECOVERY (2005)
 HU1534
 HU1534'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU1534'RECOVERED IN GOOD CONDITION.
 HU1534
 HU1534                          STATION RECOVERY (2015)
 HU1534
 HU1534'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2015 (DRD)
 HU1534'RECOVERED IN GOOD CONDITION.
 HU1534
 HU1534                          STATION RECOVERY (2016)
 HU1534
 HU1534'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MRA)
 HU1534'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2125 ***********************************************************************
 HU2125  DESIGNATION -  DOWNS AZ MK
 HU2125  PID         -  HU2125
 HU2125  STATE/COUNTY-  MD/WORCESTER
 HU2125  COUNTRY     -  US
 HU2125  USGS QUAD   -  BERLIN (2016)
 HU2125
 HU2125                         *CURRENT SURVEY CONTROL
 HU2125  ______________________________________________________________________
 HU2125* NAD 83(2011) POSITION- 38 20 43.16767(N) 075 11 03.54079(W)   ADJUSTED
 HU2125* NAD 83(2011) ELLIP HT-   -29.243 (meters)        (03/04/17)   ADJUSTED
 HU2125* NAD 83(2011) EPOCH   -  2010.00
 HU2125* NAVD 88 ORTHO HEIGHT -     6.780 (meters)       22.24  (feet) ADJUSTED
 HU2125  ______________________________________________________________________
 HU2125  GEOID HEIGHT    -        -36.012 (meters)                     GEOID18
 HU2125  NAD 83(2011) X  -  1,280,780.880 (meters)                     COMP
 HU2125  NAD 83(2011) Y  - -4,842,193.995 (meters)                     COMP
 HU2125  NAD 83(2011) Z  -  3,935,559.701 (meters)                     COMP
 HU2125  LAPLACE CORR    -         -0.57  (seconds)                    DEFLEC18
 HU2125  DYNAMIC HEIGHT  -          6.776 (meters)       22.23  (feet) COMP
 HU2125  MODELED GRAVITY -    980,008.2   (mgal)                       NAVD 88
 HU2125
 HU2125  VERT ORDER      -  SECOND    CLASS I
 HU2125
 HU2125  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2125  Standards:
 HU2125         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2125            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2125  -------------------------------------------------------------------
 HU2125  NETWORK    0.74   1.41           0.32   0.28   0.72     -0.06545135
 HU2125  -------------------------------------------------------------------
 HU2125  Click here for local accuracies and other accuracy information.
 HU2125
 HU2125.The horizontal coordinates were established by GPS observations
 HU2125.and adjusted by the ARCHER-SHEE LAND SURVEYING in March 2017.
 HU2125
 HU2125.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2125.been affixed to the stable North American tectonic plate. See 
 HU2125.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2125
 HU2125.The horizontal coordinates are valid at the epoch date displayed above
 HU2125.which is a decimal equivalence of Year/Month/Day.
 HU2125
 HU2125.The orthometric height was determined by differential leveling and
 HU2125.adjusted by the NATIONAL GEODETIC SURVEY
 HU2125.in November 1994.
 HU2125
 HU2125.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2125.GEOID18 height accuracy estimate available here.
 HU2125
 HU2125.Click photographs - Photos may exist for this station.
 HU2125
 HU2125.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2125
 HU2125.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2125
 HU2125.The ellipsoidal height was determined by GPS observations
 HU2125.and is referenced to NAD 83.
 HU2125
 HU2125.The dynamic height is computed by dividing the NAVD 88
 HU2125.geopotential number by the normal gravity value computed on the
 HU2125.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2125.degrees latitude (g = 980.6199 gals.).
 HU2125
 HU2125.The modeled gravity was interpolated from observed gravity values.
 HU2125
 HU2125. The following values were computed from the NAD 83(2011) position.
 HU2125
 HU2125;                    North         East     Units Scale Factor Converg.
 HU2125;SPC MD       -    76,912.375   558,713.529   MT  0.99999242   +1 08 22.5
 HU2125;SPC MD       -   252,336.68  1,833,045.97   sFT  0.99999242   +1 08 22.5
 HU2125;UTM  18      - 4,244,146.676   483,893.641   MT  0.99960319   -0 06 51.7
 HU2125
 HU2125!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2125!SPC MD       -   1.00000459  x   0.99999242  =   0.99999701
 HU2125!UTM  18      -   1.00000459  x   0.99960319  =   0.99960778
 HU2125
 HU2125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8389344146(NAD 83)
 HU2125
 HU2125                          SUPERSEDED SURVEY CONTROL
 HU2125
 HU2125  NAD 83(1991)-  38 20 43.16955(N)    075 11 03.53906(W) AD(       ) 2
 HU2125  NAD 83(1986)-  38 20 43.15382(N)    075 11 03.56680(W) AD(       ) 2
 HU2125  NGVD 29 (02/25/92)    7.024  (m)           23.04   (f) ADJUSTED    2 1
 HU2125
 HU2125.Superseded values are not recommended for survey control.
 HU2125
 HU2125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2125.See file dsdata.pdf to determine how the superseded data were derived.
 HU2125
 HU2125_MARKER: DZ = AZIMUTH MARK DISK
 HU2125_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2125_STAMPING: DOWNS 1955
 HU2125_MARK LOGO: CGS
 HU2125_PROJECTION: FLUSH
 HU2125_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2125+STABILITY: SURFACE MOTION
 HU2125_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2125+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2016
 HU2125
 HU2125  HISTORY     - Date     Condition        Report By
 HU2125  HISTORY     - 1955     MONUMENTED       CGS
 HU2125  HISTORY     - 1955     GOOD             CGS
 HU2125  HISTORY     - 1991     GOOD             USPSQD
 HU2125  HISTORY     - 19910514 GOOD             MDSHA
 HU2125  HISTORY     - 20031228 MARK NOT FOUND   USPSQD
 HU2125  HISTORY     - 20051128 GOOD             USPSQD
 HU2125  HISTORY     - 20150920 GOOD             BASE9
 HU2125  HISTORY     - 20160220 GOOD             ARCSHE
 HU2125
 HU2125                          STATION DESCRIPTION
 HU2125
 HU2125'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 HU2125'THE STATION IS LOCATED ABOUT 11 KM (6.75 MI) WEST OF OCEAN CITY, 9.75
 HU2125'KM (6 MI) SOUTH OF BISHOP, AND 2.5 KM (1.5 MI) NORTH OF BERLIN.
 HU2125'OWNERSHIP--ROAD RIGHT-OF-WAY
 HU2125'
 HU2125'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND
 HU2125'113, GO EAST FOR 2.6 KM (1.6 MI) ON U.S. HIGHWAY 50 TO THE STATION ON
 HU2125'THE LEFT.
 HU2125'
 HU2125'THE STATION IS A STANDARD CGS DISK STAMPED ---DOWNS 1955---, SET INTO
 HU2125'THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER FLUSH WITH
 HU2125'GROUND.  LOCATED 16.6 METERS (54.6 FT) NORTH-NORTHWEST FROM THE CENTER
 HU2125'OF THE WEST BOUND LANE OF U.S. HIGHWAY 50, 31.2 METERS (102.3 FT) WEST
 HU2125'FROM A CATCH BASIN, 28.2 METERS (92.4 FT) SOUTHWEST FROM A 18-INCH GUM
 HU2125'TREE, AND 22.8 METERS (74.8 FT) SOUTHWEST FROM A CARSONITE WITNESS
 HU2125'POST.
 HU2125
 HU2125                          STATION RECOVERY (1955)
 HU2125
 HU2125'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955
 HU2125'RECOVERED IN GOOD CONDITION.
 HU2125
 HU2125                          STATION RECOVERY (1991)
 HU2125
 HU2125'RECOVERY NOTE BY US POWER SQUADRON 1991 (TGJ)
 HU2125'RECOVERED IN GOOD CONDITION.
 HU2125
 HU2125                          STATION RECOVERY (1991)
 HU2125
 HU2125'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2125'THE MARK IS LOCATED ABOUT 5.8 MI (9.3 KM) WEST OF OCEAN CITY, 2.37 MI
 HU2125'(3.81 KM) NORTHEAST OF BERLIN AND ON ROAD RIGHT-OF-WAY.  TO REACH
 HU2125'FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN, GO
 HU2125'EAST ON U.S. HIGHWAY 50 FOR 1.6 MI (2.6 KM) TO THE MARK ON THE LEFT.
 HU2125'IT IS 16.6 M (54.5 FT) NORTH-NORTHWEST OF THE CENTER LINE OF THE
 HU2125'WESTBOUND LANES OF THE HIGHWAY, 31.2 M (102.4 FT) WEST OF A DRAINAGE
 HU2125'INLET, 28.2 M (92.5 FT) WEST OF A 1.5 FT (0.5 M) GUM TREE, 22.8 M
 HU2125'(74.8 FT) SOUTHWEST OF A CARSONITE WITNESS POST AND SET IN THE TOP OF
 HU2125'A 1.0 FT (0.3 M) ROUND CONCRETE POST FLUSH WITH THE GROUND.
 HU2125
 HU2125                          STATION RECOVERY (2003)
 HU2125
 HU2125'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU2125'MARK NOT FOUND.
 HU2125
 HU2125                          STATION RECOVERY (2005)
 HU2125
 HU2125'RECOVERY NOTE BY US POWER SQUADRON 2005 (WAC)
 HU2125'RECOVERED IN GOOD CONDITION.
 HU2125
 HU2125                          STATION RECOVERY (2015)
 HU2125
 HU2125'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2015 (DRD)
 HU2125'RECOVERED IN GOOD CONDITION.
 HU2125
 HU2125                          STATION RECOVERY (2016)
 HU2125
 HU2125'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MRA)
 HU2125'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4740 ***********************************************************************
 JV4740  DESIGNATION -  DOWNSVILLE
 JV4740  PID         -  JV4740
 JV4740  STATE/COUNTY-  MD/WASHINGTON
 JV4740  COUNTRY     -  US
 JV4740  USGS QUAD   -  WILLIAMSPORT (2017)
 JV4740
 JV4740                         *CURRENT SURVEY CONTROL
 JV4740  ______________________________________________________________________
 JV4740* NAD 83(1991) POSITION- 39 32 57.03509(N) 077 48 00.07171(W)   ADJUSTED
 JV4740* NAVD 88 ORTHO HEIGHT -   141.    (meters)      463.    (feet) SCALED
 JV4740  ______________________________________________________________________
 JV4740  GEOID HEIGHT    -        -34.148 (meters)                     GEOID18
 JV4740  LAPLACE CORR    -          3.59  (seconds)                    DEFLEC18
 JV4740  HORZ ORDER      -  SECOND
 JV4740
 JV4740.The horizontal coordinates were established by classical geodetic methods
 JV4740.and adjusted by the National Geodetic Survey in January 1992.
 JV4740
 JV4740.The orthometric height was scaled from a topographic map.
 JV4740
 JV4740.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4740.GEOID18 height accuracy estimate available here.
 JV4740
 JV4740.Click photographs - Photos may exist for this station.
 JV4740
 JV4740.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4740
 JV4740. The following values were computed from the NAD 83(1991) position.
 JV4740
 JV4740;                    North         East     Units Scale Factor Converg.
 JV4740;SPC MD       -   209,276.138   331,235.652   MT  1.00001885   -0 30 07.6
 JV4740;SPC MD       -   686,600.13  1,086,728.97   sFT  1.00001885   -0 30 07.6
 JV4740;SPC WV N     -   117,858.765   746,100.756   MT  0.99994164   +1 05 03.1
 JV4740;SPC WV N     -   386,674.96  2,447,832.23   sFT  0.99994164   +1 05 03.1
 JV4740;UTM  18      - 4,381,467.074   259,408.478   MT  1.00031273   -1 47 01.5
 JV4740
 JV4740!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4740!SPC MD       -   0.99998327  x   1.00001885  =   1.00000212
 JV4740!SPC WV N     -   0.99998327  x   0.99994164  =   0.99992491
 JV4740!UTM  18      -   0.99998327  x   1.00031273  =   1.00029599
 JV4740
 JV4740:                Primary Azimuth Mark                     Grid Az
 JV4740:SPC MD       -  MARLOWE                                  319 21 00.6
 JV4740:SPC WV N     -  MARLOWE                                  317 45 49.9
 JV4740:UTM  18      -  MARLOWE                                  320 37 54.5
 JV4740
 JV4740_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5940881467(NAD 83)
 JV4740
 JV4740|---------------------------------------------------------------------|
 JV4740| PID    Reference Object                     Distance      Geod. Az  |
 JV4740|                                                           dddmmss.s |
 JV4740| CJ9681 DOWNSVILLE RM 1                      21.930 METERS 02546     |
 JV4740| JV4734 MARLOWE                             APPROX. 7.1 KM 3185053.0 |
 JV4740|---------------------------------------------------------------------|
 JV4740
 JV4740                          SUPERSEDED SURVEY CONTROL
 JV4740
 JV4740  NAD 83(1986)-  39 32 57.03499(N)    077 48 00.08097(W) AD(       ) 2
 JV4740  NAD 27      -  39 32 56.68100(N)    077 48 01.10200(W) AD(       ) 2
 JV4740
 JV4740.Superseded values are not recommended for survey control.
 JV4740
 JV4740.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4740.See file dsdata.pdf to determine how the superseded data were derived.
 JV4740
 JV4740_MARKER: DS = TRIANGULATION STATION DISK
 JV4740_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4740_STAMPING: DOWNSVILLE 1955
 JV4740_MARK LOGO: CGS
 JV4740_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4740+STABILITY: SURFACE MOTION
 JV4740_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4740+SATELLITE: SATELLITE OBSERVATIONS - March 02, 2007
 JV4740
 JV4740  HISTORY     - Date     Condition        Report By
 JV4740  HISTORY     - 1955     MONUMENTED       CGS
 JV4740  HISTORY     - 20070302 GOOD             GEOCAC
 JV4740
 JV4740                          STATION DESCRIPTION
 JV4740
 JV4740'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4740'THE STATION IS LOCATED IN THE VILLAGE OF DOWNSVILLE, IN THE
 JV4740'SOUTHEAST CORNER OF THE DOWNSVILLE SCHOOL GROUNDS.  IT IS 20 FEET
 JV4740'NORTH OF THE CENTER OF A PRIVATE FARM ROAD AND 9 FEET NORTH OF
 JV4740'A 4 IN X 4 IN WHITE WITNESS POST.
 JV4740'
 JV4740'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH ON THE
 JV4740'PRIVATE FARM ROAD FOR 0.2 MILE TO THE MARK ON THE RIGHT.
 JV4740'
 JV4740'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JV4740'STAMPED DOWNSVILLE 1955.
 JV4740'
 JV4740'REFERENCE MARK 1 IS 14 FEET SOUTHWEST OF A MANHOLE COVER.  THE
 JV4740'MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED DOWNSVILLE
 JV4740'NO 1 1955.
 JV4740'
 JV4740'REFERENCE MARK 2 IS 12 FEET NORTH OF THE CENTER OF THE PRIVATE
 JV4740'ROAD AND 1 FOOT NORTHEAST OF A FENCE.  THE MARK PROJECTS 5 INCHES,
 JV4740'AND THE DISK IS STAMPED DOWNSVILLE NO 2 1955.
 JV4740'
 JV4740'THE AZIMUTH MARK IS 9 FEET SOUTH OF THE CENTER OF THE PRIVATE
 JV4740'ROAD, 2 FEET NORTH OF A POWERLINE POLE AND 3 FEET NORTHWEST OF A
 JV4740'4 IN X 4 IN WHITE WITNESS POST.  THE MARK PROJECTS 4 INCHES, AND
 JV4740'THE DISK IS STAMPED DOWNSILLE 1955.
 JV4740'
 JV4740'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4740
 JV4740                          STATION RECOVERY (2007)
 JV4740
 JV4740'RECOVERY NOTE BY GEOCACHING 2007 (CRC)
 JV4740'CORDS WERE GOOD AND THE DESCRIPTION WAS ADEQUATE.  MARK WAS 10' FROM
 JV4740'FENCE LINE. RM 1 WAS JUST AS DESCRIBED AND RM 2 WAS RIGHT AT THE FIRST
 JV4740'FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5734 ***********************************************************************
 HV5734  DESIGNATION -  DRAW
 HV5734  PID         -  HV5734
 HV5734  STATE/COUNTY-  MD/TALBOT
 HV5734  COUNTRY     -  US
 HV5734  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5734
 HV5734                         *CURRENT SURVEY CONTROL
 HV5734  ______________________________________________________________________
 HV5734* NAD 83(1991) POSITION- 38 47 43.56157(N) 076 07 42.02065(W)   ADJUSTED
 HV5734* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5734  ______________________________________________________________________
 HV5734  GEOID HEIGHT    -        -34.527 (meters)                     GEOID18
 HV5734  LAPLACE CORR    -         -3.92  (seconds)                    DEFLEC18
 HV5734  HORZ ORDER      -  THIRD
 HV5734
 HV5734.The horizontal coordinates were established by classical geodetic methods
 HV5734.and adjusted by the National Geodetic Survey in January 1992.
 HV5734
 HV5734.The orthometric height was scaled from a topographic map.
 HV5734
 HV5734.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5734.GEOID18 height accuracy estimate available here.
 HV5734
 HV5734.Click photographs - Photos may exist for this station.
 HV5734
 HV5734.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5734
 HV5734. The following values were computed from the NAD 83(1991) position.
 HV5734
 HV5734;                    North         East     Units Scale Factor Converg.
 HV5734;SPC MD       -   125,659.224   475,720.921   MT  0.99995083   +0 32 49.5
 HV5734;SPC MD       -   412,266.97  1,560,761.05   sFT  0.99995083   +0 32 49.5
 HV5734;UTM  18      - 4,294,680.604   402,013.050   MT  0.99971823   -0 42 25.2
 HV5734
 HV5734!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5734!SPC MD       -   1.00000530  x   0.99995083  =   0.99995613
 HV5734!UTM  18      -   1.00000530  x   0.99971823  =   0.99972353
 HV5734
 HV5734:                Primary Azimuth Mark                     Grid Az
 HV5734:SPC MD       -  CHAP                                     058 31 42.2
 HV5734:UTM  18      -  CHAP                                     059 46 56.9
 HV5734
 HV5734_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0201394680(NAD 83)
 HV5734
 HV5734|---------------------------------------------------------------------|
 HV5734| PID    Reference Object                     Distance      Geod. Az  |
 HV5734|                                                           dddmmss.s |
 HV5734| HV5645 CHAP                                473.885 METERS 0590431.7 |
 HV5734| HV5736 EASTON                              358.422 METERS 12824     |
 HV5734| HV5735 HENDERSON                           APPROX. 0.6 KM 1783639.6 |
 HV5734| HV5669 LOWNDES                             369.078 METERS 21559     |
 HV5734|---------------------------------------------------------------------|
 HV5734
 HV5734                          SUPERSEDED SURVEY CONTROL
 HV5734
 HV5734  NAD 83(1986)-  38 47 43.55708(N)    076 07 42.03482(W) AD(       ) 3
 HV5734  NAD 27      -  38 47 43.07700(N)    076 07 43.23200(W) AD(       ) 3
 HV5734  USSD        -  38 47 43.46100(N)    076 07 42.99500(W) AD(       ) 3
 HV5734
 HV5734.Superseded values are not recommended for survey control.
 HV5734
 HV5734.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5734.See file dsdata.pdf to determine how the superseded data were derived.
 HV5734
 HV5734_MARKER: H = DRILL HOLE
 HV5734_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5734_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5734
 HV5734  HISTORY     - Date     Condition        Report By
 HV5734  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5734  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5734
 HV5734                          STATION DESCRIPTION
 HV5734
 HV5734'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5734'STATION IS ON THE NW SHORE OF MILES RIVER, AT NW END OF MILES
 HV5734'RIVER BRIDGE, AND NEAR THE OLD EPISCOPAL CHURCH, ON THE LAWN OF
 HV5734'THE ANCHORAGE, ABOUT 4 FEET ABOVE HIGH WATER, 9 YARDS W OF PLANK
 HV5734'SEA WALL, 40 YARDS SW OF APPROACH TO BRIDGE, 60 YARDS N OF CORNER
 HV5734'OF PLANK SEA WALL AND 85 YARDS E OF A HOUSE.  STATION MARK IS A
 HV5734'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5734'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG WITH
 HV5734'TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HV5734'ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF
 HV5734'2-INCH DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW THE BASE OF
 HV5734'THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV5734'REFERENCE ARE AS FOLLOWS--LEFT CORNER OF LOG CABIN, 112 YARDS, S
 HV5734'72 DEG 23 MIN W.  NAIL IN BLAZE IN 12-INCH MAPLE TREE, 14.61
 HV5734'METERS (47.9 FEET), S 74 DEG 10 MIN W. RIGHT CORNER OF MAIN HOUSE
 HV5734'OF THE ANCHORAGE, 84 YARDS, N 82 DEG 38 MIN W.  NAIL IN BLAZE IN
 HV5734'10-INCH PEAR TREE, 7.63 METERS (25.03 FEET), N 46 DEG 9 MIN W.
 HV5734'RIGHT CORNER OF OLD EPISCOPAL CHURCH, 120 YARDS, N 1 DEG 39 MIN E.
 HV5734'SPIKE IN SEA WALL POST, 15.32 METERS (50.3 FEET), N 24 DEG 25 MIN
 HV5734'E. WINDMILL ON TOWER, 1/4 MILE, N 30 DEG 56 MIN E. LIGHTNING ROD
 HV5734'ON TOWER OF GOLDSBOROUGHS HOUSE, 1/4 MILE, N 37 DEG 5 MIN E.
 HV5734'CORNER OF STONE BRIDGE ABUTMENT, 43 YARDS, N 53 DEG 14 MIN E.
 HV5734'SPIKE IN SEA WALL POST, 7.72 METERS (25.33 FEET), N 66 DEG 17
 HV5734'MIN E.  NEAR PEAK OF LOCKWOOD BOAT LANDING, 1/2 MILE, N 69 DEG 20
 HV5734'MIN E.  RIGHT CORNER OF SECOND STORY OF LOCKWOODS HOUSE, 1/2 MILE,
 HV5734'N 74 DEG 59 MIN E.  SPINDLE ON BARN CUPOLA, 3/8 MILE, S 66 DEG 9
 HV5734'MIN E. SPIKE IN SEA WALL POST, 12.03 METERS (39.5 FEET), S 42 DEG
 HV5734'2 MIN E.  RIGHT CORNER OF SECOND STORY OF HENDERSONS HOUSE, 1/4
 HV5734'MILE, S 33 DEG 55 MIN E.  NAIL IN BLAZE IN 12-INCH MAPLE TREE,
 HV5734'14.15 METERS (46.4 FEET), S 10 DEG 53 MIN W.
 HV5734
 HV5734                          STATION RECOVERY (1940)
 HV5734
 HV5734'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5734'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  CARETAKER OF PLACE
 HV5734'HAS NEVER SEEN MONUMENT.  WAS INFORMED BY HIM THAT THERE HAS BEEN
 HV5734'CONSIDERABLE GROUND FILLED IN AT POSITION OF STATION.
 HV5734'
 HV5734'MAY POSSIBLY BE IN, BUT DID NOT DIG FOR MARK AS IT IS ON A PRIVATE
 HV5734'LAWN.
 HV5734'
 HV5734'REFERENCE TREES DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4653 ***********************************************************************
 HV4653  DESIGNATION -  DREDGE
 HV4653  PID         -  HV4653
 HV4653  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4653  COUNTRY     -  US
 HV4653  USGS QUAD   -  ALEXANDRIA (2019)
 HV4653
 HV4653                         *CURRENT SURVEY CONTROL
 HV4653  ______________________________________________________________________
 HV4653* NAD 83(1993) POSITION- 38 47 21.21207(N) 077 01 33.14462(W)   ADJUSTED
 HV4653* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV4653  ______________________________________________________________________
 HV4653  GEOID HEIGHT    -        -32.282 (meters)                     GEOID18
 HV4653  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 HV4653  HORZ ORDER      -  THIRD
 HV4653
 HV4653.The horizontal coordinates were established by classical geodetic methods
 HV4653.and adjusted by the National Geodetic Survey in November 1994.
 HV4653
 HV4653.The orthometric height was scaled from a topographic map.
 HV4653
 HV4653.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4653.GEOID18 height accuracy estimate available here.
 HV4653
 HV4653.Click photographs - Photos may exist for this station.
 HV4653
 HV4653.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4653
 HV4653. The following values were computed from the NAD 83(1993) position.
 HV4653
 HV4653;                    North         East     Units Scale Factor Converg.
 HV4653;SPC MD       -   124,608.885   397,752.147   MT  0.99995098   -0 00 58.5
 HV4653;SPC MD       -   408,820.98  1,304,958.50   sFT  0.99995098   -0 00 58.5
 HV4653;SPC VA N     - 2,125,631.569 3,628,064.734   MT  0.99995286   +0 55 12.1
 HV4653;SPC VA N     - 6,973,842.91 11,903,075.71   sFT  0.99995286   +0 55 12.1
 HV4653;UTM  18      - 4,295,336.288   324,048.820   MT  0.99998124   -1 16 10.0
 HV4653
 HV4653!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4653!SPC MD       -   1.00000511  x   0.99995098  =   0.99995609
 HV4653!SPC VA N     -   1.00000511  x   0.99995286  =   0.99995797
 HV4653!UTM  18      -   1.00000511  x   0.99998124  =   0.99998635
 HV4653
 HV4653:                Primary Azimuth Mark                     Grid Az
 HV4653:SPC MD       -  TORPEDO                                  327 41 24.4
 HV4653:SPC VA N     -  TORPEDO                                  326 45 13.8
 HV4653:UTM  18      -  TORPEDO                                  328 56 35.9
 HV4653
 HV4653_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2404895336(NAD 83)
 HV4653
 HV4653|---------------------------------------------------------------------|
 HV4653| PID    Reference Object                     Distance      Geod. Az  |
 HV4653|                                                           dddmmss.s |
 HV4653| DC6203 DREDGE RM                            19.585 METERS 08228     |
 HV4653| HV4600 NEW ALEXANDRIA TANK ON HILL         APPROX. 3.4 KM 2622418.6 |
 HV4653| HV4550 ALEXANDRIA SHIPYARDS BLACK TK       APPROX. 1.4 KM 2902731.2 |
 HV4653| HV4743 ALEXANDRIA DOWNTOWN BAP CH          APPROX. 2.4 KM 3103852.6 |
 HV4653| HV4548 ALEXANDRIA ST MARYS RC CH           APPROX. 2.1 KM 3113035.5 |
 HV4653| HV4543 ALEXANDRIA CHRIST CHURCH            APPROX. 2.7 KM 3150703.6 |
 HV4653| HV4544 ALEXANDRIA CITY HALL GOLD BALL      APPROX. 2.4 KM 3195945.7 |
 HV4653| HV4549 ALEXANDRIA RED TRIANGULAR TWR       APPROX. 2.9 KM 3235133.1 |
 HV4653| HV4633 ALEXANDRIA RED TOP DOME             APPROX. 2.9 KM 3235639.1 |
 HV4653| HV4551 ALEXANDRIA TORPEDO PLANT STACK      APPROX. 2.1 KM 3253220.8 |
 HV4653| HV4623 TORPEDO                             APPROX. 2.0 KM 3274025.9 |
 HV4653| HV4655 BELLEVUE NRL POWERHSE STK           APPROX. 3.6 KM 3590243.6 |
 HV4653| HV4685 WEST RAD TWR BLDG NR BELLEVUE       APPROX. 3.7 KM 3593400.7 |
 HV4653|---------------------------------------------------------------------|
 HV4653
 HV4653                          SUPERSEDED SURVEY CONTROL
 HV4653
 HV4653  NAD 83(1991)-  38 47 21.21032(N)    077 01 33.14611(W) AD(       ) 3
 HV4653  NAD 83(1986)-  38 47 21.21033(N)    077 01 33.15831(W) AD(       ) 3
 HV4653  NAD 27      -  38 47 20.79000(N)    077 01 34.24100(W) AD(       ) 3
 HV4653
 HV4653.Superseded values are not recommended for survey control.
 HV4653
 HV4653.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4653.See file dsdata.pdf to determine how the superseded data were derived.
 HV4653
 HV4653_MARKER: DS = TRIANGULATION STATION DISK
 HV4653_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4653_STAMPING: DREDGE 1928
 HV4653_MARK LOGO: CGS
 HV4653_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4653+STABILITY: SURFACE MOTION
 HV4653
 HV4653  HISTORY     - Date     Condition        Report By
 HV4653  HISTORY     - 1928     MONUMENTED       CGS
 HV4653  HISTORY     - 1974     MARK NOT FOUND   NGS
 HV4653
 HV4653                          STATION DESCRIPTION
 HV4653
 HV4653'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4653'ON THE E SHORE OF POTOMAC RIVER ON A LOW SANDY POINT, E OF JONES
 HV4653'POINT LIGHT.  AN OLD HOUSEBOAT LIES AGROUND 6 METERS S OF STATION
 HV4653'ON THE HIGH-WATER LINE, AND A ROTTING DREDGE LIES AGROUND
 HV4653'APPROXIMATELY 30 METERS S OF STATION.  MARK PROJECTS 2 INCHES
 HV4653'ABOVE SURFACE, MARKED DREDGE 1928 AND IS COVERED BY 2 INCHES OF
 HV4653'WATER AT HIGHER TIDES.
 HV4653'
 HV4653'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV4653'CONCRETE.
 HV4653'
 HV4653'REFERENCE MARK LIES E OF STATION AMONG SOME TREES AND ON THE N
 HV4653'SIDE OF A WAGON ROAD THAT RUNS INLAND FROM RIVER.  MARK IS 8 INCHES
 HV4653'ABOVE SURFACE, STAMPED DREDGE 1928.  CONSIDERABLE DREDGING
 HV4653'OPERATIONS WERE IN PROGRESS AT THE TIME OF ESTABLISHING STATION
 HV4653'AND CHANNELS MARKED BY STAKES WERE USED BY PARTLY IN TAKING
 HV4653'LAUNCH IN CLOSE TO STATION AS MUD BANKS APPROXIMATELY 1/2 MILE
 HV4653'OFFSHORE MAKE THIS SECTION INACCESSIBLE FROM LAUNCHES
 HV4653'OTHERWISE.
 HV4653'
 HV4653'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV4653
 HV4653                          STATION RECOVERY (1974)
 HV4653
 HV4653'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (GWJ)
 HV4653'STATION WAS SEARCHED FOR AND NOT FOUND.  THE STATION PLOTS IN THE
 HV4653'POTOMAC RIVER AND SHOULD BE CONSIDERED LOST.  THE PREVIOUS
 HV4653'DESCRIPTION INDICATES DREDGING IN THE STATION AREA, APPARENTLY THE
 HV4653'STATION WAS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3821 ***********************************************************************
 JU3821  DESIGNATION -  DREW CROW RESET
 JU3821  PID         -  JU3821
 JU3821  STATE/COUNTY-  MD/CECIL
 JU3821  COUNTRY     -  US
 JU3821  USGS QUAD   -  NEWARK WEST (2016)
 JU3821
 JU3821                         *CURRENT SURVEY CONTROL
 JU3821  ______________________________________________________________________
 JU3821* NAD 83(1991) POSITION- 39 41 47.88553(N) 075 47 39.08646(W)   ADJUSTED
 JU3821* NAVD 88 ORTHO HEIGHT -    95.70  (+/-2cm)      314.0   (feet) VERTCON3
 JU3821  ______________________________________________________________________
 JU3821  GEOID HEIGHT    -        -32.997 (meters)                     GEOID18
 JU3821  LAPLACE CORR    -          0.69  (seconds)                    DEFLEC18
 JU3821  HORZ ORDER      -  SECOND
 JU3821  VERT ORDER      -  THIRD ? (See Below)
 JU3821
 JU3821.The horizontal coordinates were established by classical geodetic methods
 JU3821.and adjusted by the National Geodetic Survey in January 1992.
 JU3821
 JU3821.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3821.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3821
 JU3821.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3821.GEOID18 height accuracy estimate available here.
 JU3821
 JU3821.The vertical order pertains to the NGVD 29 superseded value.
 JU3821
 JU3821.Click photographs - Photos may exist for this station.
 JU3821
 JU3821.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3821
 JU3821. The following values were computed from the NAD 83(1991) position.
 JU3821
 JU3821;                    North         East     Units Scale Factor Converg.
 JU3821;SPC MD       -   226,030.397   503,425.342   MT  1.00005246   +0 45 24.5
 JU3821;SPC MD       -   741,568.06  1,651,654.64   sFT  1.00005246   +0 45 24.5
 JU3821;SPC PA S     -    42,197.015   767,744.743   MT  1.00004544   +1 16 08.1
 JU3821;SPC PA S     -   138,441.37  2,518,842.54   sFT  1.00004544   +1 16 08.1
 JU3821;UTM  18      - 4,394,388.973   431,908.672   MT  0.99965708   -0 30 26.2
 JU3821
 JU3821!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3821!SPC MD       -   0.99999016  x   1.00005246  =   1.00004262
 JU3821!SPC PA S     -   0.99999016  x   1.00004544  =   1.00003560
 JU3821!UTM  18      -   0.99999016  x   0.99965708  =   0.99964725
 JU3821
 JU3821:                Primary Azimuth Mark                     Grid Az
 JU3821:SPC MD       -  DREW CROW AZ MK 2 RESET                  056 58 54.2
 JU3821:SPC PA S     -  DREW CROW AZ MK 2 RESET                  056 28 10.6
 JU3821:UTM  18      -  DREW CROW AZ MK 2 RESET                  058 14 44.9
 JU3821
 JU3821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3190894388(NAD 83)
 JU3821
 JU3821|---------------------------------------------------------------------|
 JU3821| PID    Reference Object                     Distance      Geod. Az  |
 JU3821|                                                           dddmmss.s |
 JU3821| CB1429 DREW CROW AZ MK 2 RESET                            0574418.7 |
 JU3821| JU3815 NEWARK MUNICIPAL TANK               APPROX. 6.0 KM 0954330.9 |
 JU3821| CB1431 DREW CROW RM 1                       10.075 METERS 10814     |
 JU3821| CB1433 DREW CROW RM 3                       19.305 METERS 11639     |
 JU3821| JU3835 NEWARK CHRYSLER SMALLER TANK        APPROX. 4.6 KM 1322342.7 |
 JU3821| JU3834 NEWARK CHRYSLER LARGER TANK         APPROX. 4.7 KM 1385404.3 |
 JU3821| JU3831 NEWARK E I DUPONT STINE LAB TK      APPROX. 4.0 KM 1700331.9 |
 JU3821| CB1432 DREW CROW RM 2                        6.562 METERS 18509     |
 JU3821| CB1430 DREW CROW AZ MK                                    2633945.0 |
 JU3821| CB1434 DREW CROW RM 4                       22.633 METERS 26606     |
 JU3821| CB1435 DREW CROW AZ MK RESET                              2683024.7 |
 JU3821| JU3957 CHROME ATT MICROWAVE RELAY TWR      APPROX.15.2 KM 2853638.6 |
 JU3821|---------------------------------------------------------------------|
 JU3821
 JU3821                          SUPERSEDED SURVEY CONTROL
 JU3821
 JU3821  NAD 83(1986)-  39 41 47.87984(N)    075 47 39.09279(W) AD(       ) 2
 JU3821  NAD 27      -  39 41 47.48200(N)    075 47 40.32200(W) AD(       ) 2
 JU3821  USSD        -  39 41 47.87000(N)    075 47 40.18000(W) AD(       ) 3
 JU3821  NGVD 29              96.04   (m)          315.1    (f) LEVELING    3  
 JU3821
 JU3821.Superseded values are not recommended for survey control.
 JU3821
 JU3821.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3821.See file dsdata.pdf to determine how the superseded data were derived.
 JU3821
 JU3821_MARKER: DS = TRIANGULATION STATION DISK
 JU3821_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3821_STAMPING: DREW CROW 1935 1958
 JU3821_MARK LOGO: CGS
 JU3821_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3821+STABILITY: SURFACE MOTION
 JU3821
 JU3821  HISTORY     - Date     Condition        Report By
 JU3821  HISTORY     - 1935     MONUMENTED       CGS
 JU3821  HISTORY     - 1958     SEE DESCRIPTION  CGS
 JU3821  HISTORY     - 1960     GOOD             CGS
 JU3821  HISTORY     - 1961     GOOD             CGS
 JU3821
 JU3821                          STATION DESCRIPTION
 JU3821
 JU3821'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JB)
 JU3821'STATION IS LOCATED 9.8 MILES BY ROAD W OF CALVERT, MARYLAND, AND
 JU3821'ABOUT 4 MILES NW OF NEWARK, DELAWARE, AND 0.4 MILE E OF THE GREEN
 JU3821'LANTERN INN ON PROPERTY BELONGING TO MR. DREW, (INITIALS UNKNOWN).
 JU3821'IT IS ON THE TOP OF A FLAT, GRASSY HILL, 235 FEET N FROM THE
 JU3821'CENTER LINE OF ROUTE 273, AND 330 FEET W FROM FENCE BORDERING
 JU3821'CULTIVATED FIELD.  STATION WAS ESTABLISHED AT AN OLD POINT -CROW 1892-
 JU3821'MARKED BY A 4- BY 4-INCH STONE POST INSCRIBED WITH THE LEGEND
 JU3821'U.S. 1892.  THIS MARK WAS REMOVED AND THE NEW STATION SET OVER
 JU3821'THE CENTER.
 JU3821'
 JU3821'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE DISKS
 JU3821'SET IN CONCRETE AS DESCRIBED.
 JU3821'
 JU3821'REFERENCE MARK NO. 1 IS 330.54 FEET, 100.748 METERS E FROM THE
 JU3821'STATION ON A FENCE LINE.
 JU3821'
 JU3821'REFERENCE MARK NO.2 IS 215.29 FEET, 65.620 METERS S FROM THE STATION
 JU3821'AT THE N EDGE OF A HEDGE.
 JU3821'
 JU3821'THE AZIMUTH MARK IS LOCATED ABOUT 0.4 MILE SW FROM THE STATION ON
 JU3821'THE PROPERTY OF E. LAKE.  IT IS ABOUT 100 PACES N FROM MR. LAKES
 JU3821'HOME AND 3 PACES E FROM THE CENTER LINE OF LANE TO THE HOUSE.
 JU3821'
 JU3821'TO REACH FROM THE STATION, GO W ON ROUTE 273 FOR 0.5 MILE TO A LANE
 JU3821'LEFT, TURN LEFT AND GO 0.1 MILE TO THE MARK ON THE LEFT.
 JU3821'
 JU3821'TO REACH THE STATION FROM CALVERT, MARYLAND, GO E ON ROUTE 273 FROM
 JU3821'THE JUNCTION WITH ROUTE 42 FOR 10.2 MILES TO A GAP IN A HEDGE ON
 JU3821'THE LEFT SIDE OF THE ROAD, TURN LEFT THROUGH GAP AND CONTINUE NE
 JU3821'ACROSS FIELD FOR ABOUT 200 YARDS TO THE HIGHEST POINT AND THE
 JU3821'STATION.
 JU3821'
 JU3821'A 90-FOOT TOWER REQUIRED FOR 1935 OBSERVATIONS.
 JU3821'
 JU3821'NOTE--POSITION CHECKS STATION CROW-1892.
 JU3821'
 JU3821'HEIGHT OF LIGHT ABOVE STATION MARK - 30 METERS.
 JU3821
 JU3821                          STATION RECOVERY (1958)
 JU3821
 JU3821'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3821'STATION AND AZIMUTH MARK RECOVERED AND FOUND IN GOOD CONDITION.
 JU3821'REFERENCE MARKS NO. 1 AND 2 WERE FOUND DESTROYED.  THEREFORE
 JU3821'REFERENCE MARKS NO. 3 AND 4 WERE ESTABLISHED.  AZIMUTH MARK IS NO
 JU3821'LONGER VISIBLE FROM GROUND, DUE TO CONSTRUCTION OF A NEW HOUSE
 JU3821'SO A NEW AZIMUTH MARK WAS ALSO ESTABLISHED.  THE STATION MARK NOW
 JU3821'SETS AT THE SOUTH EDGE OF A CULTIVATED FIELD AND A REQUEST WAS
 JU3821'MADE BY PROPERTY OWNER TO LOWER THE SURFACE MARK BELOW PLOW DEPTH.
 JU3821'THE MARK IS NOW ABOUT 12 INCHES BELOW THE SURFACE OF GROUND,
 JU3821'97.5 FEET NORTHEAST OF THE NORTHEAST CORNER OF A BRICK HOUSE AND
 JU3821'THE DISK IS STAMPED DREW CROW 1935 1958.
 JU3821'
 JU3821'REFERENCE MARK NO. 3 IS 126 FEET NORTHWEST OF THE NORTHWEST CORNER OF
 JU3821'A BRICK HOUSE.  THE MARK IS A STANDARD REFERENCE DISK SET IN A
 JU3821'12X12 INCH CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND AND THE
 JU3821'DISK IS STAMPED DREW CROW 1935 1958 NO 3.
 JU3821'
 JU3821'REFERENCE MARK NO. 4 IS 79 FEET NORTH OF NORTHCAST CORNER OF BRICK
 JU3821'HOUSE AND 75 FEET NORTHEAST OF THE NORTHWEST CORNER OF BRICK
 JU3821'HOUSE.  THE MARK IS A STANDARD REFERENCE DISK SET IN A 12X12 INCH
 JU3821'CONCRETE MONUMENT WHICH IS SET FLUSH WITH THE GROUND AND THE DISK
 JU3821'IS STAMPED DREW CROW NO 4 1935 1958.
 JU3821'
 JU3821'AZIMUTH MARK IS 30 FEET NORTH OF APPROXIMATE CENTERLINE OF STATE
 JU3821'HIGHWAY NO. 273, 2 FEET NORTHWEST OF POWERLINE POLE WITH TRANSFORMER
 JU3821'AND 2 FEET NORTH-NORTHWEST OF WITNESS POST.  THE MARK IS A STANDARD
 JU3821'AZIMUTH MARK DISK SET IN A 12X12 INCH CONCRETE MONUMENT WHICH IS
 JU3821'FLUSH WITH THE GROUND AND THE DISK IS STAMPED DREW CROW 1935
 JU3821'RESET 1958.
 JU3821'
 JU3821'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 7 AND 280 IN ELKTON,
 JU3821'GO NORTHERLY ON STATE HIGHWAY NO. 280 FOR 6.8 MILES TO JUNCTION OF
 JU3821'STATE HIGHWAY NO. 273.  TURN RIGHT AND GO EASTERLY ON STATE HIGHWAY
 JU3821'NO. 273 FOR 3.7 MILES TO AZIMUTH MARK ON LEFT (NORTH) SIDE OF
 JU3821'HIGHWAY.  CONTINUE EASTERLY ON STATE HIGHWAY NO. 273 FOR 0.2 MILE
 JU3821'TO DRIVEWAY ON LEFT.  TURN LEFT AND GO 0.05 MILE TO EDGE OF
 JU3821'CULTIVATED FIELD.  TURN RIGHT AND GO EAST FOR 0.1 MILE TO
 JU3821'STATION AS DESCRIBED.
 JU3821
 JU3821                          STATION RECOVERY (1960)
 JU3821
 JU3821'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (WER)
 JU3821'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION
 JU3821'AND THE DISTANCES VERIFIED.  THE AZIMUTH MARK WAS REMOVED AT THE
 JU3821'REQUEST OF THE PROPERTY OWNER.  SEVERAL OBJECTS INTERSECTED IN
 JU3821'1958 ARE VISIBLE FROM THE GROUND SO A NEW AZIMUTH MARK WAS NOT
 JU3821'ESTABLISHED.  A COMPLETE NEW DESCRIPTION FOLLOWS.
 JU3821'
 JU3821'THE STATION IS ABOUT 2 MILES NORTHWEST OF NEWARK, DEL., 0.3 MILE WEST
 JU3821'OF THE DELAWARE-MARYLAND BOUNDARY, ON THE NORTH SIDE OF STATE
 JU3821'HIGHWAY MD-273 AT THE CROWN OF A FLAT-TOPPED HILL IN THE CULTIVATED
 JU3821'FIELD THAT BORDERS THE BACK YARDS OF THE NEW HOUSES THAT FACE THE
 JU3821'HIGHWAY.
 JU3821'
 JU3821'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS DEL-2,
 JU3821'DEL-273 AND DEL-896 IN NEWARK, DEL., GO WEST ON DEL-273 ABOUT 2
 JU3821'MILES TO THE DELAWARE-MARYLAND BOUNDARY.  CONTINUE WEST ON MD-273
 JU3821'0.3 MILES TO THE BRICK RAMBLER HOUSE OF E. R. BUMSTEAD (ADDRESS
 JU3821'1612) ON THE RIGHT, NORTH, SIDE OF THE HIGHWAY.  THE STATION IS
 JU3821'BEHIND THE HOUSE.
 JU3821'
 JU3821'THE STATION MARKS, STANDARD DISKS ARE 235 FEET NORTH OF THE
 JU3821'CENTERLINE OF MD-273, 97.5 FEET NORTHEAST OF THE NORTHEAST CORNER OF
 JU3821'THE E. R. BUMSTEAD HOUSE AND 19.1 FEET NORTH OF THE NORTHEAST
 JU3821'CORNER OF THE YARD.  THE SURFACE MARK, STAMPED DREW CROW 1935 1958,
 JU3821'WAS LOWERED IN 1958.  IT IS 12 INCHES BELOW THE SURFACE.
 JU3821'
 JU3821'REFERENCE MARK NO. 3 STAMPED DREW CROW NO 3 1935 1958 IS 126 FEET
 JU3821'NORTHWEST OF THE NORTHWEST CORNER OF THE BRICK HOUSE THAT IS ABOUT
 JU3821'200 FEET EAST OF THE BUMSTEAD HOUSE.  IT IS A STANDARD DISK SET IN
 JU3821'A 12 X 12 INCH CONCRETE MONUMENT FLUSH WITH THE SURFACE.
 JU3821'
 JU3821'REFERENCE MARK NO. 4 STAMPED DREW CROW NO 4 1935 1958, IS 79 FEET
 JU3821'NORTH OF THE NORTHEAST CORNER AND 75 FEET NORTHEAST OF THE NORTHWEST
 JU3821'CORNER OF THE BUMSTEADS BRICK HOUSE.  IT IS A STANDARD DISK SET IN
 JU3821'A 12 X 12 INCH CONCRETE MONUMENT FLUSH WITH THE SURFACE.
 JU3821
 JU3821                          STATION RECOVERY (1961)
 JU3821
 JU3821'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3821'THE STATION MARK, REFERENCE MARK 3 AND 4 WERE RECOVERED AS DESCRIBED
 JU3821'AND FOUND IN GOOD CONDITION.  THE AZIMUTH MARK WAS FOUND LYING ON
 JU3821'THE BANK IN THE VICINITY WHERE IT WAS SET.  A NEW MARK WAS
 JU3821'ESTABLISHED ON THIS DATE.  A LARGER DIRECTION OF 01 MINUTE AND 02
 JU3821'SECOND AND A DISTANCE OF 0.005 METER WAS NOTED TO REFERENCE
 JU3821'MARK 3 ON THIS DATE.  THE DISTANCE AND DIRECTION TO REFERENCE
 JU3821'MARK 4 CHECKED WITH THE PREVIOUS DATA.  THE PREVIOUS DESCRIPTION
 JU3821'TO REACH THE STATION IS ADEQUATE.  A NEW TO REACH THE STATION AND
 JU3821'THE NEW AZIMUTH MARK IS AS FOLLOWS--
 JU3821'
 JU3821'TO REACH THE STATION FROM THE POST OFFICE IN NEWARK.  GO WEST ON MAIN
 JU3821'STREET FOR 0.4 MILE TO A TRIPLE FORKS AT A RAILROAD CROSSING.  TAKE
 JU3821'THE MIDDLE ONE OF THREE FORKS, STATE HIGHWAY 273 AND GO WEST ON
 JU3821'STATE HIGHWAY 273 FOR 1.9 MILES TO A CROSSROAD AND INTERSECTION OF
 JU3821'WEDGEWOOD ROAD.  TURN RIGHT AND GO NORTH ON WEDGEWOOD ROAD FOR
 JU3821'0.4 MILE TO A FORK.  TAKE THE RIGHT HAND FORK AND GO EAST ON A
 JU3821'GRAVELED ROAD, PASSING OVER A BRIDGE WHICH IS COVERED, FOR 0.15
 JU3821'MILE TO A FORK.  TAKE THE RIGHT HAND FORK AND GO
 JU3821'SOUTH-SOUTHEAST AND EAST ON A GRAVELED ROAD FOR 0.15 MILE, THENCE
 JU3821'TURN LEFT AND GO NORTHEAST ON A GRAVELED ROAD FOR 0.15 MILE TO
 JU3821'POWERLINE POLE NO. C451, A STANDARD METAL WITNESS POST AND
 JU3821'MARKER AND THE AZIMUTH MARK ON THE LEFT NORTHWEST SIDE OF THE
 JU3821'ROAD.  CONTINUE STRAIGHT AHEAD, WEST, ON STATE HIGHWAY 273 FOR 0.4
 JU3821'MILE TO A DRIVEWAY AND A DIM TRACK ROAD TO THE EAST OF THE
 JU3821'DRIVEWAY.  TURN RIGHT AND GO NORTH ACROSS A SMALL MEADOW FOR 0.05
 JU3821'MILE TO THE NORTHEAST CORNER OF A LAWN AND THE STATION.
 JU3821'
 JU3821'THE AZIMUTH MARK, A STANDARD DISK STAMPED DREW CROW 1935 1958 RESET
 JU3821'1961, IS SET IN TOP OF A SQUARE CONCRETE MONUMENT PROJECTION ABOUT
 JU3821'1 INCH ABOVE THE SURFACE OF THE GROUND.  IT IS 240.0 FEET SOUTHWEST
 JU3821'OF THE APPROXIMATE CENTER OF A ROAD INTERSECTION, 8.5 FEET
 JU3821'SOUTH-SOUTHEAST OF A POWERLINE GUY-WIRE STAKE, 2.4 FEET
 JU3821'WEST-SOUTHWEST OF POWERLINE POLE NO. C451, 2.0 FEET NORTHWEST OF
 JU3821'A STANDARD METAL WITNESS POST AND MARKER AND 24.0 FEET NORTHWEST
 JU3821'OF THE APPROXIMATE CENTERLINE OF A GRAVELED ROAD.
 JU3821'
 JU3821'HEIGHT OF LIGHT ABOVE STATION MARK 33 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6733 ***********************************************************************
 HV6733  DESIGNATION -  DRUM
 HV6733  PID         -  HV6733
 HV6733  STATE/COUNTY-  MD/CALVERT
 HV6733  COUNTRY     -  US
 HV6733  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6733
 HV6733                         *CURRENT SURVEY CONTROL
 HV6733  ______________________________________________________________________
 HV6733* NAD 83(1991) POSITION- 38 19 09.64008(N) 076 25 15.84270(W)   ADJUSTED
 HV6733* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6733  ______________________________________________________________________
 HV6733  GEOID HEIGHT    -        -34.497 (meters)                     GEOID18
 HV6733  LAPLACE CORR    -         -5.28  (seconds)                    DEFLEC18
 HV6733  HORZ ORDER      -  THIRD
 HV6733
 HV6733.The horizontal coordinates were established by classical geodetic methods
 HV6733.and adjusted by the National Geodetic Survey in January 1992.
 HV6733
 HV6733.The orthometric height was scaled from a topographic map.
 HV6733
 HV6733.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6733.GEOID18 height accuracy estimate available here.
 HV6733
 HV6733.Click photographs - Photos may exist for this station.
 HV6733
 HV6733.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6733
 HV6733. The following values were computed from the NAD 83(1991) position.
 HV6733
 HV6733;                    North         East     Units Scale Factor Converg.
 HV6733;SPC MD       -    72,610.667   450,627.272   MT  0.99999669   +0 21 48.1
 HV6733;SPC MD       -   238,223.50  1,478,432.97   sFT  0.99999669   +0 21 48.1
 HV6733;UTM  18      - 4,242,203.233   375,774.084   MT  0.99979005   -0 52 52.5
 HV6733
 HV6733!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6733!SPC MD       -   1.00000529  x   0.99999669  =   1.00000198
 HV6733!UTM  18      -   1.00000529  x   0.99979005  =   0.99979534
 HV6733
 HV6733:                Primary Azimuth Mark                     Grid Az
 HV6733:SPC MD       -  BARREDA 3                                322 36 51.5
 HV6733:UTM  18      -  BARREDA 3                                323 51 32.1
 HV6733
 HV6733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7577442203(NAD 83)
 HV6733
 HV6733|---------------------------------------------------------------------|
 HV6733| PID    Reference Object                     Distance      Geod. Az  |
 HV6733|                                                           dddmmss.s |
 HV6733| HV6667 USN AIR STA TALL ELEV TK            APPROX. 5.9 KM 2053727.4 |
 HV6733| HV6734 BARREDA 3                           487.417 METERS 3225839.6 |
 HV6733| HV6712 BARREDA 2                           489.732 METERS 3244325.3 |
 HV6733|---------------------------------------------------------------------|
 HV6733
 HV6733                          SUPERSEDED SURVEY CONTROL
 HV6733
 HV6733  NAD 83(1986)-  38 19 09.64281(N)    076 25 15.86170(W) AD(       ) 3
 HV6733  NAD 27      -  38 19 09.19351(N)    076 25 17.02964(W) AD(       ) 3
 HV6733
 HV6733.Superseded values are not recommended for survey control.
 HV6733
 HV6733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6733.See file dsdata.pdf to determine how the superseded data were derived.
 HV6733
 HV6733_MARKER: DS = TRIANGULATION STATION DISK
 HV6733_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6733_STAMPING: DRUM 1972
 HV6733_MARK LOGO: USN
 HV6733_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6733+STABILITY: SURFACE MOTION
 HV6733
 HV6733  HISTORY     - Date     Condition        Report By
 HV6733  HISTORY     - 1972     MONUMENTED       USN
 HV6733  HISTORY     - 1975     GOOD             NGS
 HV6733
 HV6733                          STATION DESCRIPTION
 HV6733
 HV6733'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HV6733'THE STATION MARK WAS RECOVERED AND FOUND IN GOOD CONDITION.  THERE
 HV6733'WAS NO PREVIOUS DATA AVAILABLE ON THIS POINT.  THIS STATION WAS
 HV6733'USED AS AN AZIMUTH FROM TRIANGULATION STATIONS BARREDA 2 1952 AND
 HV6733'BARREDA 3 AT THIS DATE.
 HV6733'
 HV6733'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HV6733'
 HV6733'THE STATION IS LOCATED ABOUT 5-1/4 MILES SOUTHEAST OF LUSBY, 3-1/4
 HV6733'MILES EAST OF SOLOMONS AND ON DRUM POINT WHERE THE PATUXENT RIVER
 HV6733'JOINS THE CHESEPEAKE BAY.
 HV6733'
 HV6733'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 2, 4 AND 760 WHICH
 HV6733'IS 3 MILES SOUTH OF LUSBY, GO SOUTHEAST ON STATE HIGHWAY 760 FOR
 HV6733'1.3 MILES TO A SIDE ROAD LEFT.  TURN LEFT AND GO NORTH, EAST AND
 HV6733'SOUTHEAST ON ROUSBY HALL ROAD FOR 1.8 MILES TO A SIDE ROAD LEFT.
 HV6733'TURN LEFT AND GO EAST ON A PAVED ROAD FOR 0.2 MILE TO A
 HV6733'T-INTERSECTION.  TURN RIGHT AND GO SOUTH ON BARREDA BOULEVARD
 HV6733'FOR 0.65 MILE TO THE SHORE OF THE PATUXENT RIVER.  TURN LEFT AND
 HV6733'GO EAST AND SOUTHEAST ON BARREDA BOULEVARD FOR 0.35 MILE TO
 HV6733'THE MOST SOUTHEAST POINT OF LAND AND THE STATION.
 HV6733'
 HV6733'THE STATION MARK IS A UNITED STATES NAVY OCEANOGRAPHIC OFFICE
 HV6733'TRIANGULATION STATION DISK STAMPED DRUM 1972, SET IN A CEMENT FILLED
 HV6733'6-INCH PLASTIC PIPE WHICH PROJECTS 14-INCHES.  IT IS 91.5 FEET
 HV6733'SOUTHEAST OF A POWERLINE POLE NUMBERED C P 24, 37 FEET NORTHWEST
 HV6733'OF THE MOST NORTHWEST ONE OF SIX STEEL PILES DRIVEN INTO THE
 HV6733'WATER, 150 FEET NORTHEAST OF A LARGE CHANNEL MARKER AND 10 FEET
 HV6733'NORTH OF THE SHORE LINE.
 HV6733'
 HV6733'THERE ARE NO REFERENCE MARKS AT THIS POINT.
 HV6733'
 HV6733'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES EAST OF
 HV6733'SOLOMONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5042 ***********************************************************************
 JV5042  DESIGNATION -  DRUM
 JV5042  PID         -  JV5042
 JV5042  STATE/COUNTY-  MD/KENT
 JV5042  COUNTRY     -  US
 JV5042  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5042
 JV5042                         *CURRENT SURVEY CONTROL
 JV5042  ______________________________________________________________________
 JV5042* NAD 83(1991) POSITION- 39 06 44.66345(N) 076 10 18.46229(W)   ADJUSTED
 JV5042* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5042  ______________________________________________________________________
 JV5042  GEOID HEIGHT    -        -33.476 (meters)                     GEOID18
 JV5042  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 JV5042  HORZ ORDER      -  THIRD
 JV5042
 JV5042.The horizontal coordinates were established by classical geodetic methods
 JV5042.and adjusted by the National Geodetic Survey in January 1992.
 JV5042
 JV5042.The orthometric height was scaled from a topographic map.
 JV5042
 JV5042.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5042.GEOID18 height accuracy estimate available here.
 JV5042
 JV5042.Click photographs - Photos may exist for this station.
 JV5042
 JV5042.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5042
 JV5042. The following values were computed from the NAD 83(1991) position.
 JV5042
 JV5042;                    North         East     Units Scale Factor Converg.
 JV5042;SPC MD       -   160,809.545   471,626.792   MT  0.99995835   +0 31 11.3
 JV5042;SPC MD       -   527,589.32  1,547,328.90   sFT  0.99995835   +0 31 11.3
 JV5042;UTM  18      - 4,329,904.158   398,691.494   MT  0.99972637   -0 44 21.4
 JV5042
 JV5042!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5042!SPC MD       -   1.00000529  x   0.99995835  =   0.99996364
 JV5042!UTM  18      -   1.00000529  x   0.99972637  =   0.99973166
 JV5042
 JV5042:                Primary Azimuth Mark                     Grid Az
 JV5042:SPC MD       -  PEACH                                    175 34 12.9
 JV5042:UTM  18      -  PEACH                                    176 49 45.6
 JV5042
 JV5042_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9869129904(NAD 83)
 JV5042
 JV5042|---------------------------------------------------------------------|
 JV5042| PID    Reference Object                     Distance      Geod. Az  |
 JV5042|                                                           dddmmss.s |
 JV5042| JV5051 PEACH                               APPROX. 1.3 KM 1760524.2 |
 JV5042|---------------------------------------------------------------------|
 JV5042
 JV5042                          SUPERSEDED SURVEY CONTROL
 JV5042
 JV5042  NAD 83(1986)-  39 06 44.65790(N)    076 10 18.47397(W) AD(       ) 3
 JV5042  NAD 27      -  39 06 44.26200(N)    076 10 19.64200(W) AD(       ) 3
 JV5042  USSD        -  39 06 44.65900(N)    076 10 19.46700(W) AD(       ) 3
 JV5042
 JV5042.Superseded values are not recommended for survey control.
 JV5042
 JV5042.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5042.See file dsdata.pdf to determine how the superseded data were derived.
 JV5042
 JV5042_MARKER: H = DRILL HOLE
 JV5042_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5042_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5042+STABILITY: SURFACE MOTION
 JV5042
 JV5042  HISTORY     - Date     Condition        Report By
 JV5042  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5042  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5042
 JV5042                          STATION DESCRIPTION
 JV5042
 JV5042'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5042'STATION IS ON THE WESTERN SHORE OF LANGFORD CREEK, ON DRUM POINT,
 JV5042'ABOUT 1-1/4 MILES N OF CHESTER RIVER BETWEEN LAWYERS COVE AND
 JV5042'DAVIS CREEK, IN A MARSH MEADOW, ABOUT 2 FEET ABOVE HIGH WATER,
 JV5042'13 YARDS N OF SHORE, 15 YARDS S OF SHORE, AND 13 YARDS W OF
 JV5042'EXTREME END OF POINT.
 JV5042'
 JV5042'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5042'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5042'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5042'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5042'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV5042'INCHES BELOW THE BASE OF THE MONUMENT.
 JV5042'
 JV5042'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5042'FOLLOWS--E CHIMNEY OF ASHLEYS HOUSE, 1-1/4 MILES, S 33 DEG 45 MIN W. E
 JV5042'GABLE OF HOUSE, 1/2 MILE, N 63 DEG 19 MIN W. CHIMNEY OF SMALL HOUSE,
 JV5042'3/8 MILE, N 18 DEG 50 MIN W. S GABLE OF BARN, 1-5/8 MILES, N 14 DEG
 JV5042'37 MIN E.  W CHIMNEY OF HOUSE, 1-5/8 MILES, N 36 DEG 39 MIN E. W
 JV5042'CHIMNEY OF HOUSE, 3/4 MILE, N 70 DEG 21 MIN E. W GABLE OF BROWNS
 JV5042'HOUSE, 5/8 MILE, S 44 DEG 42 MIN E.
 JV5042
 JV5042                          STATION RECOVERY (1941)
 JV5042
 JV5042'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5042'SEARCHED FOR BUT NOT FOUND.  OLD RESIDENTS SAY POINT HAS WASHED
 JV5042'50 YARDS IN LAST 25 YEARS.  AZIMUTH ANGLES AND SCALE DISTANCES
 JV5042'SHOW STATION IN WATER.  NO SIGN OF MARK AT LOW TIDE.  RECOMMEND
 JV5042'THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6545 ***********************************************************************
 HV6545  DESIGNATION -  DRUM MSFC 1908
 HV6545  PID         -  HV6545
 HV6545  STATE/COUNTY-  MD/ST MARYS
 HV6545  COUNTRY     -  US
 HV6545  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6545
 HV6545                         *CURRENT SURVEY CONTROL
 HV6545  ______________________________________________________________________
 HV6545* NAD 83(1993) POSITION- 38 07 05.83910(N) 076 23 59.83146(W)   ADJUSTED
 HV6545* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6545  ______________________________________________________________________
 HV6545  GEOID HEIGHT    -        -34.969 (meters)                     GEOID18
 HV6545  LAPLACE CORR    -         -6.01  (seconds)                    DEFLEC18
 HV6545  HORZ ORDER      -  THIRD
 HV6545
 HV6545.The horizontal coordinates were established by classical geodetic methods
 HV6545.and adjusted by the National Geodetic Survey in November 1994.
 HV6545
 HV6545.The orthometric height was scaled from a topographic map.
 HV6545
 HV6545.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6545.GEOID18 height accuracy estimate available here.
 HV6545
 HV6545.Click photographs - Photos may exist for this station.
 HV6545
 HV6545.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6545
 HV6545. The following values were computed from the NAD 83(1993) position.
 HV6545
 HV6545;                    North         East     Units Scale Factor Converg.
 HV6545;SPC MD       -    50,305.402   452,620.366   MT  1.00003658   +0 22 35.8
 HV6545;SPC MD       -   165,043.64  1,484,971.98   sFT  1.00003658   +0 22 35.8
 HV6545;SPC VA N     - 2,052,235.270 3,684,136.985   MT  0.99998609   +1 18 38.4
 HV6545;SPC VA N     - 6,733,041.88 12,087,039.42   sFT  0.99998609   +1 18 38.4
 HV6545;SPC VA S     - 1,200,143.779 3,684,146.162   MT  1.00003119   +1 16 28.5
 HV6545;SPC VA S     - 3,937,471.71 12,087,069.53   sFT  1.00003119   +1 16 28.5
 HV6545;UTM  18      - 4,219,865.079   377,282.607   MT  0.99978547   -0 51 51.4
 HV6545
 HV6545!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6545!SPC MD       -   1.00000538  x   1.00003658  =   1.00004196
 HV6545!SPC VA N     -   1.00000538  x   0.99998609  =   0.99999147
 HV6545!SPC VA S     -   1.00000538  x   1.00003119  =   1.00003657
 HV6545!UTM  18      -   1.00000538  x   0.99978547  =   0.99979084
 HV6545
 HV6545:                Primary Azimuth Mark                     Grid Az
 HV6545:SPC MD       -  IN MSFC 1908                             256 46 42.0
 HV6545:SPC VA N     -  IN MSFC 1908                             255 50 39.4
 HV6545:SPC VA S     -  IN MSFC 1908                             255 52 49.3
 HV6545:UTM  18      -  IN MSFC 1908                             258 01 09.2
 HV6545
 HV6545_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7728219865(NAD 83)
 HV6545
 HV6545|---------------------------------------------------------------------|
 HV6545| PID    Reference Object                     Distance      Geod. Az  |
 HV6545|                                                           dddmmss.s |
 HV6545| HV6559 ENOUGH                              307.389 METERS 11933     |
 HV6545| HV6562 FACTORY STACK PIPE MSFC             343.233 METERS 19705     |
 HV6545| HV6560 PIER MSFC                           296.313 METERS 20633     |
 HV6545| HV6546 IN MSFC 1908                        464.440 METERS 2570917.8 |
 HV6545|---------------------------------------------------------------------|
 HV6545
 HV6545                          SUPERSEDED SURVEY CONTROL
 HV6545
 HV6545  NAD 83(1991)-  38 07 05.83803(N)    076 23 59.83430(W) AD(       ) 3
 HV6545  NAD 83(1986)-  38 07 05.83936(N)    076 23 59.84819(W) AD(       ) 3
 HV6545  NAD 27      -  38 07 05.41700(N)    076 24 01.04500(W) AD(       ) 3
 HV6545  USSD        -  38 07 05.79500(N)    076 24 00.75700(W) AD(       ) 3
 HV6545
 HV6545.Superseded values are not recommended for survey control.
 HV6545
 HV6545.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6545.See file dsdata.pdf to determine how the superseded data were derived.
 HV6545
 HV6545_MARKER: H = DRILL HOLE
 HV6545_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6545_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6545+STABILITY: SURFACE MOTION
 HV6545
 HV6545  HISTORY     - Date     Condition        Report By
 HV6545  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6545  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6545  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6545
 HV6545                          STATION DESCRIPTION
 HV6545
 HV6545'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6545'ON THE NORTHWESTERN SHORE OF THE NORTHEASTERN BRANCH OF SMITH
 HV6545'CREEK, ABOUT 1/4 MILE NNE OF MILLERS WHARF.  THE STATION IS ON
 HV6545'MARSHLAND ON A POINT OPPOSITE MILLERS WHARF, ABOUT 21 YARDS N OF
 HV6545'SHORE, 22 YARDS W OF SHORE, 25 YARDS NE OF SHORE, AND 35 YARDS SE
 HV6545'OF A CULTIVATED FIELD WITH SEVERAL CEDAR TREES ALONG ITS EDGE.
 HV6545'THE STATION MARK IS THE CENTER OF STANDARD MONUMENT OF THE
 HV6545'MARYLAND SHELL FISH SURVEY, WHICH IS MADE OF CONCRETE AND IS 2
 HV6545'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP IS
 HV6545'MARKED WITH THE SAME MOLD AND SHOWS A CENTER HOLE SURROUNDED BY A
 HV6545'TRIANGLE, WITH COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND
 HV6545'THE VERTEX, AND THE LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HV6545'TRIANGLE.  THE CENTER HOLE IS ALWAYS AT THE CENTER OF THE
 HV6545'MONUMENT, AND IF THE MARKING HAS BEEN BROKEN OFF WITHOUT
 HV6545'DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE
 HV6545'USED AS THE LOCATION OF THE STATION.  THE MONUMENT IS SET
 HV6545'VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5 INCHES
 HV6545'ABOVE THE SURFACE.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV6545'REFERENCE ARE AS FOLLOWS--W GABLE OF OLD HOTEL, 1/2 MILE, S 24 DEG
 HV6545'41 MIN W.  LARGE CHIMNEY OF HOUSE, 1/2 MILE, N 48 DEG 30 MIN E.
 HV6545'N GABLE OF TOBACCO BARN, 3/4 MILE, N 49 DEG 23 MIN E.  FLAGSTAFF ON
 HV6545'DUNBAR PAVILION, 1/4 MILE, N 77 DEG 24 MIN E.  N GABLE OF HOUSE,
 HV6545'1/2 MILE, S 87 DEG 50 MIN E.  LEFT CHIMNEY OF 2 1/2-STORY HOUSE, 1/4
 HV6545'MILE, S 69 DEG 55 MIN E.  LEFT CHIMNEY OF MOORES HOUSE, 1/4 MILE, S 67
 HV6545'DEG 27 MIN E.  N GABLE OF STABLE, 1/4 MILE, S 59 DEG 14 MIN E.  LEFT
 HV6545'CHIMNEY OF 2 1/2-STORY HOUSE, 3/8 MILE, 312 DEG 15 MIN.  CHIMNEY
 HV6545'ON 1 1/2-STORY HOUSE, 1/2 MILE, S 36 DEG 40 MIN E.  CUPOLA OF BARN
 HV6545'1/4 MILE, S 10 DEG 29 MIN E.
 HV6545
 HV6545                          STATION RECOVERY (1942)
 HV6545
 HV6545'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6545'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE HOUR,
 HV6545'BUT NO TRACE OF IT COULD BE FOUND.  A FISHERMAN REPORTED THE POINT
 HV6545'TO BE WASHED OVER MANY TIMES, AND THE POINT IS NOW THICKLY COVERED
 HV6545'WITH MARSH GRASS AND SMALL BUSHES.  IT IS RECOMMENDED THAT THIS
 HV6545'STATION BE CLASSIFIED AS LOST.
 HV6545
 HV6545                          STATION RECOVERY (1958)
 HV6545
 HV6545'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6545'THE STATION IS LOST.  THE CULTIVATED FIELD IS NOW OVERGROWN WITH 30
 HV6545'TO 40 FOOT PINE TREES AND THE POINT IS COVERED WITH DENSE WATER BUSH
 HV6545'AND MARSH GRASS.  THIS STATION IS PROBABLY INTACT, BUT SINCE NONE
 HV6545'OF THE VARIOUS REFERENCES COULD BE RECOGNIZED, IT WAS NOT
 HV6545'RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8140 ***********************************************************************
 HV8140  DESIGNATION -  DRUM POINT
 HV8140  PID         -  HV8140
 HV8140  STATE/COUNTY-  MD/CALVERT
 HV8140  COUNTRY     -  US
 HV8140  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV8140
 HV8140                         *CURRENT SURVEY CONTROL
 HV8140  ______________________________________________________________________
 HV8140* NAD 83(1991) POSITION- 38 19 10.09388(N) 076 25 16.92980(W)   ADJUSTED
 HV8140* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV8140  ______________________________________________________________________
 HV8140  GEOID HEIGHT    -        -34.496 (meters)                     GEOID18
 HV8140  LAPLACE CORR    -         -5.27  (seconds)                    DEFLEC18
 HV8140  HORZ ORDER      -  THIRD
 HV8140
 HV8140.The horizontal coordinates were established by classical geodetic methods
 HV8140.and adjusted by the National Geodetic Survey in January 1992.
 HV8140
 HV8140.The orthometric height was scaled from a topographic map.
 HV8140
 HV8140.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8140.GEOID18 height accuracy estimate available here.
 HV8140
 HV8140.Click photographs - Photos may exist for this station.
 HV8140
 HV8140.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8140
 HV8140. The following values were computed from the NAD 83(1991) position.
 HV8140
 HV8140;                    North         East     Units Scale Factor Converg.
 HV8140;SPC MD       -    72,624.491   450,600.776   MT  0.99999667   +0 21 47.4
 HV8140;SPC MD       -   238,268.85  1,478,346.05   sFT  0.99999667   +0 21 47.4
 HV8140;UTM  18      - 4,242,217.627   375,747.901   MT  0.99979013   -0 52 53.1
 HV8140
 HV8140!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8140!SPC MD       -   1.00000543  x   0.99999667  =   1.00000210
 HV8140!UTM  18      -   1.00000543  x   0.99979013  =   0.99979556
 HV8140
 HV8140_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7574742217(NAD 83)
 HV8140
 HV8140                          SUPERSEDED SURVEY CONTROL
 HV8140
 HV8140  NAD 83(1986)-  38 19 10.09826(N)    076 25 16.94932(W) AD(       ) 3
 HV8140
 HV8140.Superseded values are not recommended for survey control.
 HV8140
 HV8140.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8140.See file dsdata.pdf to determine how the superseded data were derived.
 HV8140
 HV8140_MARKER: DD = SURVEY DISK
 HV8140_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8140_STAMPING: DRUM POINT 1985
 HV8140_MARK LOGO: NOS
 HV8140_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 HV8140_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8140+STABILITY: SURFACE MOTION
 HV8140
 HV8140  HISTORY     - Date     Condition        Report By
 HV8140  HISTORY     - 1985     MONUMENTED       NOS
 HV8140
 HV8140                          STATION DESCRIPTION
 HV8140
 HV8140'DESCRIBED BY NATIONAL OCEAN SERVICE 1985 (REM)
 HV8140'THE STATION IS LOCATED NEAR THE END OF DRUM POINT,3 MILES EAST OF
 HV8140'SOLOMONS ISLAND  BRIDGE ON PROPERTY OWNED BY THE DRUM POINT PROJECT
 HV8140'INC.(125 MEMBERS,26 ACRES) CONTACT GENE GORRELL 326-4813 OR
 HV8140'BUD CONNELY 326-2338.
 HV8140'
 HV8140'STATION WAS ESTABLISHED BY BOAT.
 HV8140'
 HV8140'THE STATION IS A NOS ALUMINUM DISK STAMPED---DRUM POINT 1985---,
 HV8140'AFFIXED TO THE TOP OF A 1.10 M ALUMINUM ROD EMBEDDED IN CONCRETE,
 HV8140'PROJECTING 0.10 M.
 HV8140'IT IS LOCATED,
 HV8140'24.1 M(79.1 FT) WEST SOUTH-WEST FROM A POWER POLE WITH TRANSFORMER
 HV8140'AND ELECTRIC BOX, 28.0 M(91.9 FT) SOUTH-EAST FROM EAST EDGE OF A
 HV8140'5X5 FT SQUARE CONCRETE SLAB,AND APPROXIMATELY 106.68 M(350.0 FT)
 HV8140'SOUTH FROM A BUILDING(BATH HOUSE ETC.).
 HV8140'
 HV8140'HEIGHT OF LIGHT SHOWN WAS 1.300 METERS ABOVE THE MARK.
 HV8140'
 HV8140'DESCRIBED BY J.G.FREDERICK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8141 ***********************************************************************
 HV8141  DESIGNATION -  DRUM PT LT 2
 HV8141  PID         -  HV8141
 HV8141  STATE/COUNTY-  MD/CALVERT
 HV8141  COUNTRY     -  US
 HV8141  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV8141
 HV8141                         *CURRENT SURVEY CONTROL
 HV8141  ______________________________________________________________________
 HV8141* NAD 83(1991) POSITION- 38 19 08.27193(N) 076 25 15.53369(W)   ADJUSTED
 HV8141* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV8141  ______________________________________________________________________
 HV8141  GEOID HEIGHT    -        -34.498 (meters)                     GEOID18
 HV8141  LAPLACE CORR    -         -5.28  (seconds)                    DEFLEC18
 HV8141  HORZ ORDER      -  THIRD
 HV8141
 HV8141.The horizontal coordinates were established by classical geodetic methods
 HV8141.and adjusted by the National Geodetic Survey in January 1992.
 HV8141
 HV8141.The orthometric height was scaled from a topographic map.
 HV8141
 HV8141.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8141.GEOID18 height accuracy estimate available here.
 HV8141
 HV8141.Click photographs - Photos may exist for this station.
 HV8141
 HV8141.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8141
 HV8141. The following values were computed from the NAD 83(1991) position.
 HV8141
 HV8141;                    North         East     Units Scale Factor Converg.
 HV8141;SPC MD       -    72,568.530   450,635.045   MT  0.99999675   +0 21 48.3
 HV8141;SPC MD       -   238,085.25  1,478,458.48   sFT  0.99999675   +0 21 48.3
 HV8141;UTM  18      - 4,242,160.946   375,780.940   MT  0.99979003   -0 52 52.2
 HV8141
 HV8141!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8141!SPC MD       -   1.00000532  x   0.99999675  =   1.00000207
 HV8141!UTM  18      -   1.00000532  x   0.99979003  =   0.99979534
 HV8141
 HV8141_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7578042160(NAD 83)
 HV8141
 HV8141                          SUPERSEDED SURVEY CONTROL
 HV8141
 HV8141  NAD 83(1986)-  38 19 08.27533(N)    076 25 15.55488(W) AD(       ) 3
 HV8141
 HV8141.Superseded values are not recommended for survey control.
 HV8141
 HV8141.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8141.See file dsdata.pdf to determine how the superseded data were derived.
 HV8141
 HV8141_MARKER: 14 = NAVIGATION LIGHT
 HV8141_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8141+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2006
 HV8141
 HV8141  HISTORY     - Date     Condition        Report By
 HV8141  HISTORY     - 1987     FIRST OBSERVED   NOS
 HV8141  HISTORY     - 20060923 GOOD             USPSQD
 HV8141
 HV8141                          STATION DESCRIPTION
 HV8141
 HV8141'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (REM)
 HV8141'THE STATION IS LOCATED IN THE PATUXENT RIVER, SOUTH OF DRUM PT
 HV8141'WHERE PATUXENT RIVER MEETS WITH CHESAPEAKE BAY.
 HV8141'
 HV8141'THE STATION WAS REACHED BY BOAT.
 HV8141'
 HV8141'THE STATION IS THE LIGHT ATOP A DOLPHIN.
 HV8141'
 HV8141'DESCRIBED BY A. EBADIRAD.
 HV8141
 HV8141                          STATION RECOVERY (2006)
 HV8141
 HV8141'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV8141'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5706 ***********************************************************************
 JV5706  DESIGNATION -  DRYDOCK
 JV5706  PID         -  JV5706
 JV5706  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5706  COUNTRY     -  US
 JV5706  USGS QUAD   -  CURTIS BAY (2016)
 JV5706
 JV5706                         *CURRENT SURVEY CONTROL
 JV5706  ______________________________________________________________________
 JV5706* NAD 83(1991) POSITION- 39 14 58.36294(N) 076 34 59.20811(W)   ADJUSTED
 JV5706* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5706  ______________________________________________________________________
 JV5706  GEOID HEIGHT    -        -32.862 (meters)                     GEOID18
 JV5706  LAPLACE CORR    -         -4.48  (seconds)                    DEFLEC18
 JV5706  HORZ ORDER      -  THIRD
 JV5706
 JV5706.The horizontal coordinates were established by classical geodetic methods
 JV5706.and adjusted by the National Geodetic Survey in January 1992.
 JV5706
 JV5706.The orthometric height was scaled from a topographic map.
 JV5706
 JV5706.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5706.GEOID18 height accuracy estimate available here.
 JV5706
 JV5706.Click photographs - Photos may exist for this station.
 JV5706
 JV5706.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5706
 JV5706. The following values were computed from the NAD 83(1991) position.
 JV5706
 JV5706;                    North         East     Units Scale Factor Converg.
 JV5706;SPC MD       -   175,791.249   435,985.028   MT  0.99997108   +0 15 41.9
 JV5706;SPC MD       -   576,741.79  1,430,394.21   sFT  0.99997108   +0 15 41.9
 JV5706;UTM  18      - 4,345,663.706   363,394.762   MT  0.99982977   -1 00 06.4
 JV5706
 JV5706!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5706!SPC MD       -   1.00000519  x   0.99997108  =   0.99997627
 JV5706!UTM  18      -   1.00000519  x   0.99982977  =   0.99983496
 JV5706
 JV5706:                Primary Azimuth Mark                     Grid Az
 JV5706:SPC MD       -  DUMP                                     262 36 58.3
 JV5706:UTM  18      -  DUMP                                     263 52 46.6
 JV5706
 JV5706_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6339445663(NAD 83)
 JV5706
 JV5706|---------------------------------------------------------------------|
 JV5706| PID    Reference Object                     Distance      Geod. Az  |
 JV5706|                                                           dddmmss.s |
 JV5706| CA9354 DRYDOCK RM                           13.514 METERS 20633     |
 JV5706| JV5707 DUMP                                APPROX. 1.3 KM 2625240.2 |
 JV5706| JV5545 CHESAPEAKE PAPER BOARD CO TANK      APPROX. 2.7 KM 3262635.8 |
 JV5706| JV5497 BALTIMORE TRUST FLAT TOP TOWER      APPROX. 5.1 KM 3284706.0 |
 JV5706| JV5553 FORT MC HENRY REAR RNG LT 1934      APPROX. 2.4 KM 3555443.5 |
 JV5706|---------------------------------------------------------------------|
 JV5706
 JV5706                          SUPERSEDED SURVEY CONTROL
 JV5706
 JV5706  NAD 83(1986)-  39 14 58.35931(N)    076 34 59.21722(W) AD(       ) 3
 JV5706  NAD 27      -  39 14 57.97200(N)    076 35 00.34400(W) AD(       ) 3
 JV5706
 JV5706.Superseded values are not recommended for survey control.
 JV5706
 JV5706.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5706.See file dsdata.pdf to determine how the superseded data were derived.
 JV5706
 JV5706_MARKER: DS = TRIANGULATION STATION DISK
 JV5706_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5706_STAMPING: DRYDOCK 1934
 JV5706_MARK LOGO: CGS
 JV5706_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5706+STABILITY: SURFACE MOTION
 JV5706
 JV5706  HISTORY     - Date     Condition        Report By
 JV5706  HISTORY     - 1934     MONUMENTED       CGS
 JV5706  HISTORY     - 1956     GOOD             AMS
 JV5706  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV5706
 JV5706                          STATION DESCRIPTION
 JV5706
 JV5706'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5706'THE STATION IS LOCATED ON THE S SHORE OF PATAPSCO RIVER OPPOSITE
 JV5706'FORT MC HENRY ON THE PROPERTY OF THE MARYLAND DRYDOCK COMPANY.  IT
 JV5706'IS 12.2 METERS SW OF THE SHORE END OF THE MOST WESTERLY PIER.  4.8
 JV5706'METERS SE OF THE NW CORNER OF THE CONCRETE BULKHEAD AND 2 METERS
 JV5706'E OF THE MOST WESTERLY FACE OF THE CONCRETE BULKHEAD.
 JV5706'
 JV5706'STATION AND REFERENCE MARK ARE STANDARD BRONZE DISKS SET IN
 JV5706'CONCRETE.
 JV5706'
 JV5706'THE REFERENCE MARK IS LOCATED 2.4 METERS E OF THE WESTERN FACE
 JV5706'OF THE WOODEN BULKHEAD WHICH MARKS THE BOUNDARY OF THE MARYLAND
 JV5706'DRYDOCK COMPANY PROPERTY.
 JV5706
 JV5706                          STATION RECOVERY (1956)
 JV5706
 JV5706'RECOVERY NOTE BY US ARMY MAP SERVICE (NOW DMA) 1956
 JV5706'THE STATION IS IN GOOD CONDITION.  THE MARK IS ABOUT 10 IN. BELOW
 JV5706'SURFACE OF THE PIER.  A 3-IN. PIPE TO SURFACE IS FILLED WITH OIL
 JV5706'AND WATER.
 JV5706
 JV5706                          STATION RECOVERY (1975)
 JV5706
 JV5706'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5706'A BRASS PIPE WAS FOUND IN A POSITION ON MARYLAND DRYDOCK
 JV5706'COMPANYS WESTERN PIER WHICH FITS DESCRIPTION OF THE STATION
 JV5706'PROVIDED BY JAB IN 1934 AND BY THE ARMY MAP SERVICE IN 1956.  THE
 JV5706'MARK WAS NOT SEEN.  THE PIPE WAS THREE INCHES IN DIAMETER AND
 JV5706'WAS FILLED WITH OIL, WATER AND TRASH.  THE FOLLOWING MEASUREMENTS
 JV5706'WERE TAKEN AT THE SITE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6053 ***********************************************************************
 JV6053  DESIGNATION -  DUAL
 JV6053  PID         -  JV6053
 JV6053  STATE/COUNTY-  MD/HOWARD
 JV6053  COUNTRY     -  US
 JV6053  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6053
 JV6053                         *CURRENT SURVEY CONTROL
 JV6053  ______________________________________________________________________
 JV6053* NAD 83(1991) POSITION- 39 16 52.53701(N) 076 52 18.47531(W)   ADJUSTED
 JV6053* NAVD 88 ORTHO HEIGHT -   145.    (meters)      476.    (feet) SCALED
 JV6053  ______________________________________________________________________
 JV6053  GEOID HEIGHT    -        -32.103 (meters)                     GEOID18
 JV6053  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 JV6053  HORZ ORDER      -  SECOND
 JV6053
 JV6053.The horizontal coordinates were established by classical geodetic methods
 JV6053.and adjusted by the National Geodetic Survey in January 1992.
 JV6053
 JV6053.The orthometric height was scaled from a topographic map.
 JV6053
 JV6053.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6053.GEOID18 height accuracy estimate available here.
 JV6053
 JV6053.Click photographs - Photos may exist for this station.
 JV6053
 JV6053.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6053
 JV6053. The following values were computed from the NAD 83(1991) position.
 JV6053
 JV6053;                    North         East     Units Scale Factor Converg.
 JV6053;SPC MD       -   179,237.774   411,061.234   MT  0.99997483   +0 04 49.7
 JV6053;SPC MD       -   588,049.26  1,348,623.40   sFT  0.99997483   +0 04 49.7
 JV6053;UTM  18      - 4,349,659.056   338,555.558   MT  0.99992093   -1 11 07.2
 JV6053
 JV6053!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6053!SPC MD       -   0.99998232  x   0.99997483  =   0.99995715
 JV6053!UTM  18      -   0.99998232  x   0.99992093  =   0.99990325
 JV6053
 JV6053:                Primary Azimuth Mark                     Grid Az
 JV6053:SPC MD       -  DUAL AZ MK                               089 14 17.5
 JV6053:UTM  18      -  DUAL AZ MK                               090 30 14.4
 JV6053
 JV6053_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3855549659(NAD 83)
 JV6053
 JV6053|---------------------------------------------------------------------|
 JV6053| PID    Reference Object                     Distance      Geod. Az  |
 JV6053|                                                           dddmmss.s |
 JV6053| CA9355 DUAL AZ MK                                         0891907.2 |
 JV6053| CA9356 DUAL RM 1                            40.670 METERS 11850     |
 JV6053| CA9357 DUAL RM 2                            34.205 METERS 35830     |
 JV6053|---------------------------------------------------------------------|
 JV6053
 JV6053                          SUPERSEDED SURVEY CONTROL
 JV6053
 JV6053  NAD 83(1986)-  39 16 52.53517(N)    076 52 18.48376(W) AD(       ) 2
 JV6053  NAD 27      -  39 16 52.15600(N)    076 52 19.56800(W) AD(       ) 2
 JV6053
 JV6053.Superseded values are not recommended for survey control.
 JV6053
 JV6053.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6053.See file dsdata.pdf to determine how the superseded data were derived.
 JV6053
 JV6053_MARKER: DS = TRIANGULATION STATION DISK
 JV6053_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6053_STAMPING: DUAL 1943
 JV6053_MARK LOGO: CGS
 JV6053_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6053+STABILITY: SURFACE MOTION
 JV6053
 JV6053  HISTORY     - Date     Condition        Report By
 JV6053  HISTORY     - 1943     MONUMENTED       CGS
 JV6053  HISTORY     - 1952     MARK NOT FOUND   CGS
 JV6053
 JV6053                          STATION DESCRIPTION
 JV6053
 JV6053'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV6053'THE STATION IS LOCATED ABOUT 5-1/2 MILES WNW OF ELLICOTT CITY,
 JV6053'ON THE N SIDE OF U.S. HIGHWAY 40, JUST W OF THE JUNCTION OF
 JV6053'U.S. HIGHWAY 40 AND U.S. 40 BYPASS, AND ON PROPERTY OWNED BY
 JV6053'WM. S. LEDBETTER.  IT IS 58 FEET N OF THE CENTER OF HIGHWAY 40,
 JV6053'31 FEET NE OF POWER-LINE POLE NO. 69004, 29 FEET E OF THE CENTER
 JV6053'OF A FARM LANE, 21 FEET E OF A FENCE CORNER AND 1 FOOT S OF A
 JV6053'FENCE LINE.  IT IS STAMPED DUAL 1942 AND IS 18 INCHES BELOW THE
 JV6053'SURFACE OF THE GROUND.
 JV6053'
 JV6053'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE BRONZE DISKS SET
 JV6053'IN CONCRETE.
 JV6053'
 JV6053'REFERENCE MARK NO.1 IS E OF THE STATION, 33 FEET N OF THE CENTER
 JV6053'OF U.S. HIGHWAY 40, 3 FEET W OF POWER-LINE POLE NO. 69003,
 JV6053'STAMPED DUAL NO.1 1942 AND PROJECTS 4 INCHES.
 JV6053'
 JV6053'REFERENCE MARK NO.2 IS NW OF THE STATION, AT THE N END OF A
 JV6053'ROW OF SHRUBBERY, 10 FEET W OF THE CENTER OF THE FARM LANE,
 JV6053'STAMPED DUAL NO.2 1942 AND PROJECTS 6 INCHES.
 JV6053'
 JV6053'THE AZIMUTH MARK IS ABOUT 0.25 MILE NE OF THE STATION.  IT IS
 JV6053'A BRONZE U.S. COAST AND GEODETIC SURVEY AZIMUTH MARK DISK SET
 JV6053'FLUSH IN THE TOP AND CENTER OF A 2-FOOT CULVERT, 14 FEET W OF
 JV6053'THE CENTER OF A DIRT ROAD, 3 FEET W OF A GUARD FENCE AND 3 FEET
 JV6053'SW OF THE END OF THE GUARD FENCE.  IT IS STAMPED DUAL 1942.  TO
 JV6053'REACH FROM THE STATION GO E ON U.S. 40 BYPASS FOR 0.2 MILE.
 JV6053'TURN LEFT ON DIRT ROAD FOR 0.05 MILE TO THE CULVERT AND MARK ON
 JV6053'THE LEFT.
 JV6053'
 JV6053'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 29 AND
 JV6053'40 IN ELLICOTT CITY GO W ON HIGHWAY 40 FOR 3.95 MILES TO A
 JV6053'T-INTERSECTION AT U.S. 40 BYPASS DUAL HIGHWAY.  ENTER DUAL
 JV6053'HIGHWAY AND GO W ON U.S. 40 BYPASS FOR 0.45 MILE TO A FARM LANE
 JV6053'RIGHT AT THE TOP OF A GRADE AND THE STATION ON THE RIGHT.
 JV6053'
 JV6053'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION SLACK.
 JV6053'
 JV6053'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION SAUTER 1938.
 JV6053'
 JV6053'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION LEACH 1938.
 JV6053'
 JV6053'A 103-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION MANNING 1933.
 JV6053'
 JV6053'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION JONESTOWN.
 JV6053'
 JV6053'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION DAYTON.
 JV6053'
 JV6053'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6053
 JV6053                          STATION RECOVERY (1952)
 JV6053
 JV6053'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (CFM)
 JV6053'LETTER OF MR. CARROLL F. MERRIAM DATED MAY 16, 1952--
 JV6053'
 JV6053'THE STATION HAS BEEN COMPLETELY DESTROYED BY THE CONSTRUCTION OF
 JV6053'THE EXTENSION OF U.S. HIGHWAY 40.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4939 ***********************************************************************
 HV4939  DESIGNATION -  DUCK
 HV4939  PID         -  HV4939
 HV4939  STATE/COUNTY-  MD/CHARLES
 HV4939  COUNTRY     -  US
 HV4939  USGS QUAD   -  MOUNT VERNON (2019)
 HV4939
 HV4939                         *CURRENT SURVEY CONTROL
 HV4939  ______________________________________________________________________
 HV4939* NAD 83(1993) POSITION- 38 39 01.69106(N) 077 06 46.11455(W)   ADJUSTED
 HV4939* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV4939  ______________________________________________________________________
 HV4939  GEOID HEIGHT    -        -32.472 (meters)                     GEOID18
 HV4939  LAPLACE CORR    -         -1.56  (seconds)                    DEFLEC18
 HV4939  HORZ ORDER      -  THIRD
 HV4939
 HV4939.The horizontal coordinates were established by classical geodetic methods
 HV4939.and adjusted by the National Geodetic Survey in November 1994.
 HV4939
 HV4939.The orthometric height was scaled from a topographic map.
 HV4939
 HV4939.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4939.GEOID18 height accuracy estimate available here.
 HV4939
 HV4939.Click photographs - Photos may exist for this station.
 HV4939
 HV4939.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4939
 HV4939. The following values were computed from the NAD 83(1993) position.
 HV4939
 HV4939;                    North         East     Units Scale Factor Converg.
 HV4939;SPC MD       -   109,212.041   390,180.233   MT  0.99995754   -0 04 14.9
 HV4939;SPC MD       -   358,306.50  1,280,116.31   sFT  0.99995754   -0 04 14.9
 HV4939;SPC VA N     - 2,110,113.089 3,620,745.486   MT  0.99994855   +0 51 56.8
 HV4939;SPC VA N     - 6,922,929.36 11,879,062.48   sFT  0.99994855   +0 51 56.8
 HV4939;UTM  18      - 4,280,107.772   316,142.150   MT  1.00001629   -1 19 11.9
 HV4939
 HV4939!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4939!SPC MD       -   1.00000514  x   0.99995754  =   0.99996268
 HV4939!SPC VA N     -   1.00000514  x   0.99994855  =   0.99995369
 HV4939!UTM  18      -   1.00000514  x   1.00001629  =   1.00002143
 HV4939
 HV4939:                Primary Azimuth Mark                     Grid Az
 HV4939:SPC MD       -  GUNSTON RESET                            268 56 12.2
 HV4939:SPC VA N     -  GUNSTON RESET                            268 00 00.5
 HV4939:UTM  18      -  GUNSTON RESET                            270 11 09.2
 HV4939
 HV4939_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1614280107(NAD 83)
 HV4939
 HV4939|---------------------------------------------------------------------|
 HV4939| PID    Reference Object                     Distance      Geod. Az  |
 HV4939|                                                           dddmmss.s |
 HV4939| DC6210 DUCK RM 2                             6.030 METERS 03200     |
 HV4939| DC6209 DUCK RM 1                            14.360 METERS 15003     |
 HV4939| HV5045 GUNSTON RESET                       APPROX. 2.1 KM 2685157.3 |
 HV4939|---------------------------------------------------------------------|
 HV4939
 HV4939                          SUPERSEDED SURVEY CONTROL
 HV4939
 HV4939  NAD 83(1991)-  38 39 01.68869(N)    077 06 46.11761(W) AD(       ) 3
 HV4939  NAD 83(1986)-  38 39 01.69017(N)    077 06 46.12898(W) AD(       ) 3
 HV4939  NAD 27      -  38 39 01.26700(N)    077 06 47.21000(W) AD(       ) 3
 HV4939
 HV4939.Superseded values are not recommended for survey control.
 HV4939
 HV4939.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4939.See file dsdata.pdf to determine how the superseded data were derived.
 HV4939
 HV4939_MARKER: DS = TRIANGULATION STATION DISK
 HV4939_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4939_STAMPING: DUCK 1928
 HV4939_MARK LOGO: CGS
 HV4939_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4939+STABILITY: SURFACE MOTION
 HV4939
 HV4939  HISTORY     - Date     Condition        Report By
 HV4939  HISTORY     - 1928     MONUMENTED       CGS
 HV4939  HISTORY     - 1948     GOOD             CGS
 HV4939  HISTORY     - 1959     MARK NOT FOUND   CGS
 HV4939
 HV4939                          STATION DESCRIPTION
 HV4939
 HV4939'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4939'STATION IS ON THE E SHORE OF POTOMAC RIVER ABOUT A MILE N OF
 HV4939'HOLLIS POINT, ON THE HIGH-WATER LINE.  PROBABLY AN INCH OF WATER
 HV4939'COVERS MARK AT FLOOD WATERS, AS LOCALITY IS LOW SWAMPY GROUND
 HV4939'BACK OF STATION.  A DUCK BLIND NAILED TO TREES AT HIGH-WATER LINE
 HV4939'STANDS 2 METERS S OF STATION AND OVER WATER.  AN OLD UNITED
 HV4939'STATES ENGINEERS HYDROGRAPHIC SIGNAL IS JUST N OF STATION AROUND
 HV4939'POINT.  MARK PROJECTS 6 INCHES ABOVE SURFACE, STAMPED DUCK
 HV4939'1928.
 HV4939'
 HV4939'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV4939'CONCRETE.
 HV4939'
 HV4939'REFERENCE MARKS NOS.1 AND 2 ARE SET ON HIGHEST GROUND ADJACENT
 HV4939'TO STATION, PROJECTS 6 INCHES ABOVE SURFACE AND STAMPED DUCK NO.1
 HV4939'1928 AND DUCK NO.2 1928 RESPECTIVELY.
 HV4939'
 HV4939'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV4939
 HV4939                          STATION RECOVERY (1948)
 HV4939
 HV4939'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948
 HV4939'STATION RECOVERED IN GOOD CONDITION.  R. M. NO. 2 RECOVERED IN
 HV4939'GOOD CONDITION.  DISTANCE FROM STATION TO R. M. NO. 2 WAS
 HV4939'MEASURED AND FOUND TO BE CORRECT.
 HV4939'
 HV4939'R. M. NO. 1 WAS FOUND IN DAMAGED CONDITION.  THE DISK HAS BEEN
 HV4939'REMOVED, BUT MONUMENT AND DRILL HOLE ARE FIRM AND IN ORIGINAL
 HV4939'POSITION.
 HV4939'
 HV4939'THE ORIGINAL DESCRIPTION IS ADEQUATE EXCEPT FOR THE FOLLOWING
 HV4939'ADDITION AND DELETIONS--
 HV4939'
 HV4939'ADD--SINCE STATION IS LOCATED ON WOODED SHORELINE IT CAN MOST
 HV4939'EASILY BE REACHED BY BOAT, USING T SHEET 5759 OR U.S. ENGINEERS
 HV4939'QUADRANGLE MT. VERNON, VA. - MD. AS A GUIDE TO THE APPROXIMATE
 HV4939'LOCATION.
 HV4939'
 HV4939'DELETE--A DUCK BLIND NAILED TO A TREE IS NO LONGER IN
 HV4939'EXISTENCE.  THE OLD U.S. ENGINEERS HYDROGRAPHIC SIGNAL IS NO
 HV4939'LONGER IN EXISTENCE.
 HV4939
 HV4939                          STATION RECOVERY (1959)
 HV4939
 HV4939'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV4939'NO MARKS RECOVERED AFTER A BRIEF SEARCH OF THE AREA.  THE BANK HAS
 HV4939'ERODED SEVERAL METERS IN THE PAST YEARS, BUT THE MARKS MAY BE
 HV4939'STILL BE IN EXISTENCE.  POSSIBLY OFFSHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5869 ***********************************************************************
 HV5869  DESIGNATION -  DUCK
 HV5869  PID         -  HV5869
 HV5869  STATE/COUNTY-  MD/TALBOT
 HV5869  COUNTRY     -  US
 HV5869  USGS QUAD   -  CAMBRIDGE (2016)
 HV5869
 HV5869                         *CURRENT SURVEY CONTROL
 HV5869  ______________________________________________________________________
 HV5869* NAD 83(1991) POSITION- 38 35 42.75300(N) 076 00 03.49124(W)   ADJUSTED
 HV5869* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5869  ______________________________________________________________________
 HV5869  GEOID HEIGHT    -        -35.119 (meters)                     GEOID18
 HV5869  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 HV5869  HORZ ORDER      -  THIRD
 HV5869
 HV5869.The horizontal coordinates were established by classical geodetic methods
 HV5869.and adjusted by the National Geodetic Survey in January 1992.
 HV5869
 HV5869.The orthometric height was scaled from a topographic map.
 HV5869
 HV5869.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5869.GEOID18 height accuracy estimate available here.
 HV5869
 HV5869.Click photographs - Photos may exist for this station.
 HV5869
 HV5869.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5869
 HV5869. The following values were computed from the NAD 83(1991) position.
 HV5869
 HV5869;                    North         East     Units Scale Factor Converg.
 HV5869;SPC MD       -   103,548.048   487,028.266   MT  0.99996177   +0 37 37.3
 HV5869;SPC MD       -   339,723.89  1,597,858.57   sFT  0.99996177   +0 37 37.3
 HV5869;UTM  18      - 4,272,333.086   412,831.585   MT  0.99969357   -0 37 28.1
 HV5869
 HV5869!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5869!SPC MD       -   1.00000523  x   0.99996177  =   0.99996700
 HV5869!UTM  18      -   1.00000523  x   0.99969357  =   0.99969880
 HV5869
 HV5869:                Primary Azimuth Mark                     Grid Az
 HV5869:SPC MD       -  GANDER MSFC 1909                         089 10 51.2
 HV5869:UTM  18      -  GANDER MSFC 1909                         090 25 56.6
 HV5869
 HV5869_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1283172333(NAD 83)
 HV5869
 HV5869|---------------------------------------------------------------------|
 HV5869| PID    Reference Object                     Distance      Geod. Az  |
 HV5869|                                                           dddmmss.s |
 HV5869| HU2070 GANDER MSFC 1909                    APPROX. 2.1 KM 0894828.5 |
 HV5869| CX2715 DUCK RM                              12.610 METERS 33141     |
 HV5869|---------------------------------------------------------------------|
 HV5869
 HV5869                          SUPERSEDED SURVEY CONTROL
 HV5869
 HV5869  NAD 83(1986)-  38 35 42.74971(N)    076 00 03.50901(W) AD(       ) 3
 HV5869  NAD 27      -  38 35 42.31400(N)    076 00 04.71900(W) AD(       ) 3
 HV5869  USSD        -  38 35 42.71600(N)    076 00 04.52100(W) AD(       ) 3
 HV5869
 HV5869.Superseded values are not recommended for survey control.
 HV5869
 HV5869.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5869.See file dsdata.pdf to determine how the superseded data were derived.
 HV5869
 HV5869_MARKER: K = CLAY TILE PIPE
 HV5869_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV5869_SP_SET: OBJECT DRIVEN INTO GROUND
 HV5869
 HV5869  HISTORY     - Date     Condition        Report By
 HV5869  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5869  HISTORY     - 1941     MARK NOT FOUND   CGS
 HV5869
 HV5869                          STATION DESCRIPTION
 HV5869
 HV5869'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5869'ON THE NORTHERN SHORE OF CHOPTANK RIVER, ON GOOSE POINT, 3/4 MILE
 HV5869'N OF OYSTERSHELL POINT, AND 1-3/4 MILES NE OF CHANCELLORS POINT,
 HV5869'ON THE EDGE OF SAND BEACH ON LOWER PART OF POINT, ABOUT ON LEVEL
 HV5869'WITH HIGH WATER, 15 TO 20 YARDS SE OF GROUP OF CEDAR AND PERSIMMON
 HV5869'TREES.  STATION MARK IS CENTER OF 2-INCH TILE PIPE PROJECTING 5
 HV5869'INCHES ABOVE SURFACE OF GROUND.  SUB-SURFACE MARK IS THE CENTER OF
 HV5869'2-INCH TILE PIPE BURIED WITH TOP 2 INCHES BELOW BASE OF SURFACE
 HV5869'PIPE.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HV5869'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV5869'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV5869'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5869'TOP OF POST.  IT IS 12.61 METERS (41.4 FEET) FROM STATION IN N 28
 HV5869'DEG 19 MIN W. OTHER DISTANCES AND BEARINGS ARE AS FOLLOWS--LEFT
 HV5869'PEAK OF BARN CUPOLA, 2 MILES, S 16 DEG 15 MIN W.  NEAR CORNER OF
 HV5869'SQUARE CHIMNEY OF HOUSE, 2-3/4 MILES, S 29 DEG 57 MIN W.  CHIMNEY
 HV5869'OF HOUSE, 4 MILES, S 48 DEG 44 MIN W.  NEAR CORNER OF SQUARE
 HV5869'CUPOLA ON HOUSE, 1-5/8 MILES, S 53 DEG 10 MIN W.  NAIL IN BLAZE IN
 HV5869'2-INCH PERSIMMON TREE, 21.22 METERS (69.6 FEET), N 85 DEG 6 MIN W.
 HV5869'NAIL IN BLAZE IN 3-INCH PERSIMMON TREE, 15.20 METERS (49.9 FEET),
 HV5869'N 26 DEG 17 MIN W.  NAIL IN BLAZE IN 3-INCH CEDAR TREE, 14.28
 HV5869'METERS (46.9 FEET), N 8 DEG 21 MIN E.  LEFT PEAK OF LARGE BARN,
 HV5869'1-3/4 MILES, N 81 DEG 55 MIN E.  CENTER OF ROOF OF HOUSE, 1-3/8
 HV5869'MILES, S 61 DEG 35 MIN E.  SMOKE PIPE ON WHARF HOUSE, 7/8 MILE, S
 HV5869'28 DEG 14 MIN E.
 HV5869
 HV5869                          STATION RECOVERY (1941)
 HV5869
 HV5869'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HV5869'STATION SEARCHED FOR BUT NOT FOUND.  THE POINT HAS SANDED AND
 HV5869'STATION HAS PROBABLY WASHED OUT.  THE REFERENCE MARK IS PROBABLY
 HV5869'COVERED AND COULD NOT BE LOCATED.  THE FARMER SAW THE REFERENCE
 HV5869'MARK ABOUT 10 YEARS AGO BUT COULD NOT SHOW US DEFINITELY WHERE IT
 HV5869'WAS.  REFERENCE TREES ARE ALL GONE.
 HV5869'
 HV5869'RECOMMEND THAT STATION AND REFERENCE MARKS BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5860 ***********************************************************************
 JV5860  DESIGNATION -  DUCK
 JV5860  PID         -  JV5860
 JV5860  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5860  COUNTRY     -  US
 JV5860  USGS QUAD   -  LAUREL (2016)
 JV5860
 JV5860                         *CURRENT SURVEY CONTROL
 JV5860  ______________________________________________________________________
 JV5860* NAD 83(1991) POSITION- 39 00 51.02557(N) 076 47 34.90521(W)   ADJUSTED
 JV5860* NAVD 88 ORTHO HEIGHT -    77.8   (meters)      255.    (feet) VERTCON3
 JV5860  ______________________________________________________________________
 JV5860  GEOID HEIGHT    -        -32.484 (meters)                     GEOID18
 JV5860  LAPLACE CORR    -         -5.61  (seconds)                    DEFLEC18
 JV5860  HORZ ORDER      -  FIRST
 JV5860
 JV5860.The horizontal coordinates were established by classical geodetic methods
 JV5860.and adjusted by the National Geodetic Survey in January 1992.
 JV5860
 JV5860.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5860.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5860
 JV5860.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5860.GEOID18 height accuracy estimate available here.
 JV5860
 JV5860.Click photographs - Photos may exist for this station.
 JV5860
 JV5860.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5860
 JV5860. The following values were computed from the NAD 83(1991) position.
 JV5860
 JV5860;                    North         East     Units Scale Factor Converg.
 JV5860;SPC MD       -   149,599.963   417,924.694   MT  0.99995275   +0 07 47.6
 JV5860;SPC MD       -   490,812.55  1,371,141.27   sFT  0.99995275   +0 07 47.6
 JV5860;UTM  18      - 4,319,878.825   344,764.122   MT  0.99989674   -1 07 44.3
 JV5860
 JV5860!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5860!SPC MD       -   0.99999289  x   0.99995275  =   0.99994564
 JV5860!UTM  18      -   0.99999289  x   0.99989674  =   0.99988963
 JV5860
 JV5860:                Primary Azimuth Mark                     Grid Az
 JV5860:SPC MD       -  DUCK 2 AZ MK                             046 04 35.6
 JV5860:UTM  18      -  DUCK 2 AZ MK                             047 20 07.5
 JV5860
 JV5860_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4476419878(NAD 83)
 JV5860
 JV5860|---------------------------------------------------------------------|
 JV5860| PID    Reference Object                     Distance      Geod. Az  |
 JV5860|                                                           dddmmss.s |
 JV5860| JV5842 FT MEADE 2ND ARMY RAD TOWER         APPROX.13.1 KM 0162544.7 |
 JV5860| JV5921 DUCK 2 AZ MK                        APPROX. 0.7 KM 0461223.2 |
 JV5860| JV5888 BOWIE W BOWIE PEPCO MICROWAVE       APPROX. 1.9 KM 0871350.5 |
 JV5860| JV5858 BOWIE W BOWIE WSSC TANK             APPROX. 1.2 KM 0875921.0 |
 JV5860| CA9358 DUCK AZ MK                                         1015346.7 |
 JV5860| CA9359 DUCK RM 1                            29.967 METERS 12907     |
 JV5860| CA9360 DUCK RM 2                            27.968 METERS 23437     |
 JV5860| JV5922 DUCK 2                              149.808 METERS 26704     |
 JV5860|---------------------------------------------------------------------|
 JV5860
 JV5860                          SUPERSEDED SURVEY CONTROL
 JV5860
 JV5860  NAD 83(1986)-  39 00 51.02351(N)    076 47 34.91628(W) AD(       ) 1
 JV5860  NAD 27      -  39 00 50.62789(N)    076 47 36.02462(W) AD(       ) 1
 JV5860  NGVD 29 (07/19/86)   78.0    (m)          256.     (f) VERT ANG       
 JV5860
 JV5860.Superseded values are not recommended for survey control.
 JV5860
 JV5860.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5860.See file dsdata.pdf to determine how the superseded data were derived.
 JV5860
 JV5860_MARKER: DS = TRIANGULATION STATION DISK
 JV5860_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5860_STAMPING: DUCK 1970
 JV5860_MARK LOGO: CGS
 JV5860_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5860+STABILITY: SURFACE MOTION
 JV5860
 JV5860  HISTORY     - Date     Condition        Report By
 JV5860  HISTORY     - 1970     MONUMENTED       NGS
 JV5860  HISTORY     - 1978     SEE DESCRIPTION  NGS
 JV5860
 JV5860                          STATION DESCRIPTION
 JV5860
 JV5860'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5860'THE STATION IS ABOUT 3 MILES WEST OF THE PRINCE GEORGES-ANNE ARUNDEL
 JV5860'COUNTY LINE, 3 MILES NORTHEAST OF GLENDALE HEIGHTS AND 2 MILES
 JV5860'SOUTHEAST OF THE BELTSVILLE AIRPORT, NEAR A GRAVEL PIT AND ON
 JV5860'PROPERTY OF THE LANDOVER SAND COMPANY.
 JV5860'
 JV5860'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 197
 JV5860'AND 56 IN WEST BOWIE, GO NORTH ON HIGHWAY 197 FOR 0.2 MILE TO A
 JV5860'SIDE STREET ON THE LEFT.  TURN LEFT AND GO WEST ON 6TH STREET
 JV5860'FOR 0.4 MILE TO A ROAD RIGHT AT A SIGN LANDOVER SAND COMPANY.
 JV5860'TURN RIGHT AND GO NORTHERLY FOR 0.2 MILE TO A CABLE ACROSS THE
 JV5860'ROAD.  CONTINUE ON GRAVELED ROAD, GOING NORTH AND NORTHWEST
 JV5860'FOR 0.15 MILE, PASSING OFFICE TRAILERS ON THE LEFT, TO A FORK
 JV5860'AND THE AZIMUTH MARK ON THE RIGHT.  BEAR LEFT AND CONTINUE
 JV5860'NORTHWEST FOR 0.1 MILE TO A DIM TRACK ROAD ON THE LEFT.  TURN
 JV5860'LEFT AND GO WESTERLY ON TRACK ROAD FOR 0.15 MILE TO A
 JV5860'CLEARING AND THE STATION ON THE RIGHT NEAR THE HIGHEST POINT OF
 JV5860'THE HILL.
 JV5860'
 JV5860'STATION MARK IS A STANDARD DISK, STAMPED DUCK 1970, SET IN THE
 JV5860'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS
 JV5860'4 INCHES ABOVE THE GROUND.  IT IS 31.0 FEET NORTH OF THE CENTERLINE
 JV5860'OF THE TRACK ROAD AND 5.9 FEET SOUTHEAST OF A WITNESS POST.  THE
 JV5860'UNDERGROUND MARK IS 40 INCHES BELOW THE GROUND SURFACE.
 JV5860'
 JV5860'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED DUCK NO 1 1970, SET
 JV5860'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV5860'PROJECTS 6 INCHES ABOVE THE GROUND.  IT IS 102.5 FEET SOUTH OF
 JV5860'THE WITNESS POST, 29.0 FEET SOUTHWEST OF THE CENTERLINE OF THE
 JV5860'TRACK ROAD AND ABOUT 2 FEET LOWER THAN THE STATION.
 JV5860'
 JV5860'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED DUCK NO 2 1970,
 JV5860'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV5860'THAT PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 95.3 FEET WEST
 JV5860'OF THE WITNESS POST, 30.0 FEET SOUTHWEST OF THE CENTERLINE OF THE
 JV5860'TRACK ROAD AND ABOUT 2 FEET HIGHER THAN THE STATION.
 JV5860'
 JV5860'AZIMUTH MARK IS A STANDARD DISK, STAMPED DUCK 1970, SET IN THE
 JV5860'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS
 JV5860'3 INCHES ABOVE THE GROUND.  IT IS 23.5 FEET SOUTH OF THE CENTERLINE
 JV5860'OF A TRACK ROAD, 2.7 FEET SOUTHEAST OF POWER LINE POLE NUMBER
 JV5860'22-20 AND 1.7 FEET NORTH OF A WITNESS POST.
 JV5860
 JV5860                          STATION RECOVERY (1978)
 JV5860
 JV5860'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (CLN)
 JV5860'NO OTHER OBJECTS V.G.
 JV5860'
 JV5860'EDM.
 JV5860'
 JV5860'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JV5860'AS PREVIOUSLY DESCRIBED.  ALL DISTANCES AND DIRECTIONS WERE WITHIN
 JV5860'CLOSE AGREEMENT WITH THE PREVIOUS OBSERVATIONS.
 JV5860'
 JV5860'THE STATION WAS IN DANGER OF DESTRUCTION BY A LAND FILL OPERATION.
 JV5860'A NEW STATION DUCK 2 WAS ESTABLISHED ABOUT 150 METERS TO THE WEST OF
 JV5860'THIS OLD STATION.  ALL MARKS WILL BE DESTROYED IN THE SUMMER OF
 JV5860'1978.
 JV5860'
 JV5860'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES NORTHEAST
 JV5860'OF GLENDALE HEIGHTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3921 ***********************************************************************
 JU3921  DESIGNATION -  DUCK 1898
 JU3921  PID         -  JU3921
 JU3921  STATE/COUNTY-  MD/CECIL
 JU3921  COUNTRY     -  US
 JU3921  USGS QUAD   -  NORTH EAST (2016)
 JU3921
 JU3921                         *CURRENT SURVEY CONTROL
 JU3921  ______________________________________________________________________
 JU3921* NAD 83(1991) POSITION- 39 31 19.99756(N) 075 53 28.98678(W)   ADJUSTED
 JU3921* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3921  ______________________________________________________________________
 JU3921  GEOID HEIGHT    -        -33.298 (meters)                     GEOID18
 JU3921  LAPLACE CORR    -         -1.14  (seconds)                    DEFLEC18
 JU3921  HORZ ORDER      -  THIRD
 JU3921
 JU3921.The horizontal coordinates were established by classical geodetic methods
 JU3921.and adjusted by the National Geodetic Survey in January 1992.
 JU3921
 JU3921.The orthometric height was scaled from a topographic map.
 JU3921
 JU3921.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3921.GEOID18 height accuracy estimate available here.
 JU3921
 JU3921.Click photographs - Photos may exist for this station.
 JU3921
 JU3921.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3921
 JU3921. The following values were computed from the NAD 83(1991) position.
 JU3921
 JU3921;                    North         East     Units Scale Factor Converg.
 JU3921;SPC MD       -   206,560.911   495,324.314   MT  1.00001343   +0 41 44.9
 JU3921;SPC MD       -   677,691.92  1,625,076.52   sFT  1.00001343   +0 41 44.9
 JU3921;UTM  18      - 4,375,109.962   423,383.394   MT  0.99967227   -0 34 02.2
 JU3921
 JU3921!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3921!SPC MD       -   1.00000510  x   1.00001343  =   1.00001853
 JU3921!UTM  18      -   1.00000510  x   0.99967227  =   0.99967737
 JU3921
 JU3921:                Primary Azimuth Mark                     Grid Az
 JU3921:SPC MD       -  COURT 1898                               148 34 28.2
 JU3921:UTM  18      -  COURT 1898                               149 50 15.3
 JU3921
 JU3921_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2338375109(NAD 83)
 JU3921
 JU3921|---------------------------------------------------------------------|
 JU3921| PID    Reference Object                     Distance      Geod. Az  |
 JU3921|                                                           dddmmss.s |
 JU3921| JU3923 COURT 1898                          APPROX. 1.1 KM 1491613.1 |
 JU3921|---------------------------------------------------------------------|
 JU3921
 JU3921                          SUPERSEDED SURVEY CONTROL
 JU3921
 JU3921  NAD 83(1986)-  39 31 19.98914(N)    075 53 28.99217(W) AD(       ) 3
 JU3921  NAD 27      -  39 31 19.59300(N)    075 53 30.20600(W) AD(       ) 3
 JU3921  USSD        -  39 31 19.97300(N)    075 53 30.03600(W) AD(       ) 3
 JU3921
 JU3921.Superseded values are not recommended for survey control.
 JU3921
 JU3921.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3921.See file dsdata.pdf to determine how the superseded data were derived.
 JU3921
 JU3921_MARKER: N = NAIL
 JU3921_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3921_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3921+STABILITY: SURFACE MOTION
 JU3921
 JU3921  HISTORY     - Date     Condition        Report By
 JU3921  HISTORY     - 1898     MONUMENTED       CGS
 JU3921  HISTORY     - 1902     GOOD             CGS
 JU3921
 JU3921                          STATION DESCRIPTION
 JU3921
 JU3921'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 JU3921'ON W SIDE OF ELK RIVER, NEARLY OPPOSITE MOUTH OF BACK CREEK, ON
 JU3921'BULL MINNOW POINT, AND JUST ABOVE HIGH-WATER MARK.  MARKED BY
 JU3921'A BOX 3 BY 3 INCHES AND 3 FEET DEEP, FILLED WITH CEMENT, A NAIL
 JU3921'IN TOP MARKING CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5922 ***********************************************************************
 JV5922  DESIGNATION -  DUCK 2
 JV5922  PID         -  JV5922
 JV5922  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5922  COUNTRY     -  US
 JV5922  USGS QUAD   -  LAUREL (2016)
 JV5922
 JV5922                         *CURRENT SURVEY CONTROL
 JV5922  ______________________________________________________________________
 JV5922* NAD 83(1991) POSITION- 39 00 50.77716(N) 076 47 41.12399(W)   ADJUSTED
 JV5922* NAVD 88 ORTHO HEIGHT -    77.4   (meters)      254.    (feet) VERTCON3
 JV5922  ______________________________________________________________________
 JV5922  GEOID HEIGHT    -        -32.479 (meters)                     GEOID18
 JV5922  LAPLACE CORR    -         -5.60  (seconds)                    DEFLEC18
 JV5922  HORZ ORDER      -  SECOND
 JV5922
 JV5922.The horizontal coordinates were established by classical geodetic methods
 JV5922.and adjusted by the National Geodetic Survey in January 1992.
 JV5922
 JV5922.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5922.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5922
 JV5922.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5922.GEOID18 height accuracy estimate available here.
 JV5922
 JV5922.Click photographs - Photos may exist for this station.
 JV5922
 JV5922.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5922
 JV5922. The following values were computed from the NAD 83(1991) position.
 JV5922
 JV5922;                    North         East     Units Scale Factor Converg.
 JV5922;SPC MD       -   149,591.965   417,775.107   MT  0.99995275   +0 07 43.7
 JV5922;SPC MD       -   490,786.31  1,370,650.50   sFT  0.99995275   +0 07 43.7
 JV5922;UTM  18      - 4,319,874.116   344,614.403   MT  0.99989731   -1 07 48.2
 JV5922
 JV5922!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5922!SPC MD       -   0.99999296  x   0.99995275  =   0.99994571
 JV5922!UTM  18      -   0.99999296  x   0.99989731  =   0.99989027
 JV5922
 JV5922:                Primary Azimuth Mark                     Grid Az
 JV5922:SPC MD       -  DUCK 2 AZ MK                             053 17 54.6
 JV5922:UTM  18      -  DUCK 2 AZ MK                             054 33 26.5
 JV5922
 JV5922_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4461419874(NAD 83)
 JV5922
 JV5922|---------------------------------------------------------------------|
 JV5922| PID    Reference Object                     Distance      Geod. Az  |
 JV5922|                                                           dddmmss.s |
 JV5922| JV5921 DUCK 2 AZ MK                        APPROX. 0.8 KM 0532538.3 |
 JV5922| JV5860 DUCK                                149.808 METERS 08704     |
 JV5922| JV5888 BOWIE W BOWIE PEPCO MICROWAVE       APPROX. 2.0 KM 0871303.8 |
 JV5922| JV5858 BOWIE W BOWIE WSSC TANK             APPROX. 1.4 KM 0875320.7 |
 JV5922| CA9361 DUCK 2 RM 3                           7.946 METERS 16650     |
 JV5922| CA9362 DUCK 2 RM 4                           7.486 METERS 29806     |
 JV5922|---------------------------------------------------------------------|
 JV5922
 JV5922                          SUPERSEDED SURVEY CONTROL
 JV5922
 JV5922  NAD 83(1986)-  39 00 50.77513(N)    076 47 41.13475(W) AD(       ) 2
 JV5922  NAD 27      -  39 00 50.37954(N)    076 47 42.24317(W) AD(       ) 2
 JV5922  NGVD 29 (07/19/86)   77.6    (m)          255.     (f) VERT ANG       
 JV5922
 JV5922.Superseded values are not recommended for survey control.
 JV5922
 JV5922.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5922.See file dsdata.pdf to determine how the superseded data were derived.
 JV5922
 JV5922_MARKER: DH = HORIZONTAL CONTROL DISK
 JV5922_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5922_STAMPING: DUCK 2 1978
 JV5922_MARK LOGO: NGS
 JV5922_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5922+STABILITY: SURFACE MOTION
 JV5922
 JV5922  HISTORY     - Date     Condition        Report By
 JV5922  HISTORY     - 1978     MONUMENTED       NGS
 JV5922
 JV5922                          STATION DESCRIPTION
 JV5922
 JV5922'DESCRIBED BY NATIONAL GEODETIC SURVEY 1978 (CLN)
 JV5922'NO OTHER OBJECTS V.G.
 JV5922'
 JV5922'THE STATION IS LOCATED 3 MILES WEST OF THE PRINCE GEORGES-ANNE
 JV5922'ARUNDEL COUNTY LINE, 3 MILES NORTHEAST OF GLENDALE HEIGHTS AND
 JV5922'2 MILES SOUTHEAST OF THE BELTSVILLE AIRPORT.  THE PROPERTY IS OWNED
 JV5922'BY THE AREA SANITATION LAND FILL.
 JV5922'
 JV5922'TO REACH FROM THE POST OFFICE IN WEST BOWIE, GO WEST ON STATE
 JV5922'HIGHWAY 564 FOR 0.1 MILE TO MAPLE AVENUE.  TURN RIGHT AND GO NORTH
 JV5922'ON MAPLE AVENUE FOR 0.15 MILE TO A SIDE ROAD LEFT.  TURN LEFT AND
 JV5922'GO WEST ON DUCKETTOWN ROAD FOR 0.35 MILE TO A SIDE ROAD RIGHT.
 JV5922'TURN RIGHT AND GO NORTH ON A PAVED ROAD FOR 0.3 MILE TO A FORK.
 JV5922'KEEP LEFT AND GO WEST ON A BLADED ROAD FOR 0.35 MILE TO THE
 JV5922'WEST EDGE OF THE LAND FILL AREA AND THE STATION.
 JV5922'
 JV5922'THE STATION SURFACE MARK IS A STANDARD DISK STAMPED DUCK 2 1978,
 JV5922'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS
 JV5922'1-INCH.  IT IS 50 FEET SOUTH OF THE CENTER OF A WOODS ROAD, 11.5
 JV5922'FEET NORTHWEST OF A 10-INCH PINE TREE WITH A TRIANGULAR BLAZE AND
 JV5922'A SPIKE ON THE NORTHWEST SIDE OF THE TREE AND 1.7 FEET NORTHWEST
 JV5922'OF A WITNESS POST.  IT IS NEARLY ON THE WEST BOUNDARY LINE OF THE
 JV5922'PROPERTY.
 JV5922'
 JV5922'REFERENCE MARK 3 IS A STANDARD DISK STAMPED DUCK 2 NO 3 1978,
 JV5922'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS
 JV5922'1-INCH.  IT IS 14.5 FEET SOUTH OF THE 10-INCH PINE TREE AND 1.4
 JV5922'FEET SOUTHEAST OF A WITNESS POST.
 JV5922'
 JV5922'REFERENCE MARK 4 IS A STANDARD DISK STAMPED DUCK 2 NO 4 1978,
 JV5922'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS
 JV5922'1-INCH.  IT IS 34 FEET WEST OF THE 10-INCH PINE TREE AND 1.7
 JV5922'FEET SOUTHEAST OF A WITNESS POST.
 JV5922'
 JV5922'THE AZIMUTH MARK IS A STANDARD DISK STAMPED DUCK 2 1978, SET IN
 JV5922'THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS 1-INCH.
 JV5922'IT IS 100 FEET SOUTH OF THE NORTH EDGE OF A WOODED AREA, 70 FEET
 JV5922'NORTHWEST OF THE CENTER OF A GRAVELED ROAD, 75 FEET NORTH OF THE
 JV5922'SOUTH EDGE OF THE WOODED AREA AND 2.6 FEET NORTHWEST OF A WITNESS
 JV5922'POST.
 JV5922'
 JV5922'TO REACH THE AZIMUTH MARK FROM THE POST OFFICE IN WEST BOWIE, GO
 JV5922'EAST ON STATE HIGHWAY 564 FOR 0.1 MILE TO A T-INTERSECTION.  TURN
 JV5922'LEFT AND GO NORTHWEST ON STATE HIGHWAY 197 FOR 0.9 MILE TO A
 JV5922'GRAVELED ROAD LEFT.  TURN LEFT AND GO SOUTH FOR 0.25 MILE TO THE
 JV5922'AZIMUTH MARK ON THE RIGHT.
 JV5922'
 JV5922'NEAREST TOWN--GLENDALE HEIGHTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5921 ***********************************************************************
 JV5921  DESIGNATION -  DUCK 2 AZ MK
 JV5921  PID         -  JV5921
 JV5921  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5921  COUNTRY     -  US
 JV5921  USGS QUAD   -  LAUREL (2016)
 JV5921
 JV5921                         *CURRENT SURVEY CONTROL
 JV5921  ______________________________________________________________________
 JV5921* NAD 83(1991) POSITION- 39 01 05.84061(N) 076 47 15.09644(W)   ADJUSTED
 JV5921* NAVD 88 ORTHO HEIGHT -    61.6   (meters)      202.    (feet) VERTCON3
 JV5921  ______________________________________________________________________
 JV5921  GEOID HEIGHT    -        -32.496 (meters)                     GEOID18
 JV5921  LAPLACE CORR    -         -5.66  (seconds)                    DEFLEC18
 JV5921  HORZ ORDER      -  THIRD
 JV5921
 JV5921.The horizontal coordinates were established by classical geodetic methods
 JV5921.and adjusted by the National Geodetic Survey in January 1992.
 JV5921
 JV5921.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5921.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5921
 JV5921.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5921.GEOID18 height accuracy estimate available here.
 JV5921
 JV5921.Click photographs - Photos may exist for this station.
 JV5921
 JV5921.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5921
 JV5921. The following values were computed from the NAD 83(1991) position.
 JV5921
 JV5921;                    North         East     Units Scale Factor Converg.
 JV5921;SPC MD       -   150,057.897   418,400.168   MT  0.99995293   +0 08 00.1
 JV5921;SPC MD       -   492,314.95  1,372,701.22   sFT  0.99995293   +0 08 00.1
 JV5921;UTM  18      - 4,320,326.177   345,249.514   MT  0.99989488   -1 07 32.1
 JV5921
 JV5921!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5921!SPC MD       -   0.99999544  x   0.99995293  =   0.99994837
 JV5921!UTM  18      -   0.99999544  x   0.99989488  =   0.99989032
 JV5921
 JV5921:                Primary Azimuth Mark                     Grid Az
 JV5921:SPC MD       -  DUCK 2                                   233 17 54.6
 JV5921:UTM  18      -  DUCK 2                                   234 33 26.8
 JV5921
 JV5921_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4524920326(NAD 83)
 JV5921
 JV5921|---------------------------------------------------------------------|
 JV5921| PID    Reference Object                     Distance      Geod. Az  |
 JV5921|                                                           dddmmss.s |
 JV5921| JV5922 DUCK 2                              APPROX. 0.8 KM 2332554.7 |
 JV5921|---------------------------------------------------------------------|
 JV5921
 JV5921                          SUPERSEDED SURVEY CONTROL
 JV5921
 JV5921  NAD 83(1986)-  39 01 05.83851(N)    076 47 15.10730(W) AD(       ) 3
 JV5921  NAD 27      -  39 01 05.44295(N)    076 47 16.21618(W) AD(       ) 3
 JV5921  NGVD 29 (07/19/86)   61.8    (m)          203.     (f) VERT ANG       
 JV5921
 JV5921.Superseded values are not recommended for survey control.
 JV5921
 JV5921.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5921.See file dsdata.pdf to determine how the superseded data were derived.
 JV5921
 JV5921_MARKER: DZ = AZIMUTH MARK DISK
 JV5921_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5921_STAMPING: DUCK 2 1978
 JV5921_MARK LOGO: NGS
 JV5921_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5921+STABILITY: SURFACE MOTION
 JV5921_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5921+SATELLITE: SATELLITE OBSERVATIONS - April 25, 2003
 JV5921
 JV5921  HISTORY     - Date     Condition        Report By
 JV5921  HISTORY     - 1978     MONUMENTED       NGS
 JV5921  HISTORY     - 20030425 GOOD             DMW
 JV5921
 JV5921                          STATION DESCRIPTION
 JV5921
 JV5921'DESCRIBED BY NATIONAL GEODETIC SURVEY 1978 (CLN)
 JV5921'THE AZIMUTH MARK IS A STANDARD DISK STAMPED DUCK 2 1978, SET IN
 JV5921'THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS 1-INCH.
 JV5921'IT IS 100 FEET SOUTH OF THE NORTH EDGE OF A WOODED AREA, 70 FEET
 JV5921'NORTHWEST OF THE CENTER OF A GRAVELED ROAD, 75 FEET NORTH OF THE
 JV5921'SOUTH EDGE OF THE WOODED AREA AND 2.6 FEET NORTHWEST OF A WITNESS
 JV5921'POST.
 JV5921'
 JV5921'TO REACH THE AZIMUTH MARK FROM THE POST OFFICE IN WEST BOWIE, GO EAST
 JV5921'ON STATE HIGHWAY 564 FOR 0.1 MILE TO A T-INTERSECTION.  TURN LEFT
 JV5921'AND GO NORTHWEST ON STATE HIGHWAY 197 FOR 0.9 MILE TO A GRAVELED
 JV5921'ROAD LEFT.  TURN LEFT AND GO SOUTH FOR 0.25 MILE TO THE AZIMUTH
 JV5921'MARK ON THE RIGHT.
 JV5921'
 JV5921'NEAREST TOWN--GLENDALE HEIGHTS.
 JV5921
 JV5921                          STATION RECOVERY (2003)
 JV5921
 JV5921'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (DMM)
 JV5921'STATION IS APPROXIMATLY 4 FEET BELOW GROUND SURFACE AND IS ACCESSABLE
 JV5921'DUE TO BEING PLACED INSIDE A CONCRETE PIPE (STOOD ON END).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6416 ***********************************************************************
 HV6416  DESIGNATION -  DUCK MSFC 1910
 HV6416  PID         -  HV6416
 HV6416  STATE/COUNTY-  MD/DORCHESTER
 HV6416  COUNTRY     -  US
 HV6416  USGS QUAD   -  WINGATE (2016)
 HV6416
 HV6416                         *CURRENT SURVEY CONTROL
 HV6416  ______________________________________________________________________
 HV6416* NAD 83(1991) POSITION- 38 16 39.75866(N) 076 06 08.50385(W)   ADJUSTED
 HV6416* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6416  ______________________________________________________________________
 HV6416  GEOID HEIGHT    -        -35.453 (meters)                     GEOID18
 HV6416  LAPLACE CORR    -         -1.85  (seconds)                    DEFLEC18
 HV6416  HORZ ORDER      -  THIRD
 HV6416
 HV6416.The horizontal coordinates were established by classical geodetic methods
 HV6416.and adjusted by the National Geodetic Survey in January 1992.
 HV6416
 HV6416.The orthometric height was scaled from a topographic map.
 HV6416
 HV6416.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6416.GEOID18 height accuracy estimate available here.
 HV6416
 HV6416.Click photographs - Photos may exist for this station.
 HV6416
 HV6416.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6416
 HV6416. The following values were computed from the NAD 83(1991) position.
 HV6416
 HV6416;                    North         East     Units Scale Factor Converg.
 HV6416;SPC MD       -    68,214.855   478,542.537   MT  1.00000395   +0 33 48.2
 HV6416;SPC MD       -   223,801.57  1,570,018.31   sFT  1.00000395   +0 33 48.2
 HV6416;UTM  18      - 4,237,202.967   403,580.270   MT  0.99971449   -0 40 58.6
 HV6416
 HV6416!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6416!SPC MD       -   1.00000560  x   1.00000395  =   1.00000955
 HV6416!UTM  18      -   1.00000560  x   0.99971449  =   0.99972009
 HV6416
 HV6416:                Primary Azimuth Mark                     Grid Az
 HV6416:SPC MD       -  NORMAN 1910                              180 48 10.6
 HV6416:UTM  18      -  NORMAN 1910                              182 02 57.4
 HV6416
 HV6416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0358037202(NAD 83)
 HV6416
 HV6416|---------------------------------------------------------------------|
 HV6416| PID    Reference Object                     Distance      Geod. Az  |
 HV6416|                                                           dddmmss.s |
 HV6416| HV6417 SAINT THOMAS CHURCH SPIRE           APPROX. 2.9 KM 1164009.9 |
 HV6416| HV6418 NORMAN 1910                         APPROX. 2.3 KM 1812158.8 |
 HV6416|---------------------------------------------------------------------|
 HV6416
 HV6416                          SUPERSEDED SURVEY CONTROL
 HV6416
 HV6416  NAD 83(1986)-  38 16 39.75796(N)    076 06 08.52203(W) AD(       ) 3
 HV6416  NAD 27      -  38 16 39.30700(N)    076 06 09.75600(W) AD(       ) 3
 HV6416  USSD        -  38 16 39.68300(N)    076 06 09.47800(W) AD(       ) 3
 HV6416
 HV6416.Superseded values are not recommended for survey control.
 HV6416
 HV6416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6416.See file dsdata.pdf to determine how the superseded data were derived.
 HV6416
 HV6416_MARKER: H = DRILL HOLE
 HV6416_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6416_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6416+STABILITY: SURFACE MOTION
 HV6416
 HV6416  HISTORY     - Date     Condition        Report By
 HV6416  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6416  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6416
 HV6416                          STATION DESCRIPTION
 HV6416
 HV6416'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6416'STATION IS ON THE EASTERN SHORE OF FOX CREEK, ON PINEY POINT, AT
 HV6416'THE N SIDE OF ENTRANCE TO DUCK POINT COVE, ABOUT 3/4 MILE SE OF
 HV6416'WINGATE POINT.  IT IS ON A MARSH POINT, 1 FOOT ABOVE HIGH WATER,
 HV6416'50 YARDS S OF SHORE, 50 YARDS N OF SHORE, AND 65 YARDS E-NE OF
 HV6416'END OF POINT.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF
 HV6416'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6416'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6416'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6416'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF
 HV6416'2-INCH DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW THE
 HV6416'BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS
 HV6416'OF REFERENCE ARE AS FOLLOWS--NEAR PEAK OF SMALL CABIN, 1
 HV6416'MILE, S 11 DEG 53 MIN W.  LEFT TANGENT OF HOOPER ISLAND, 3
 HV6416'MILES, S 24 DEG 50 MIN W.  LEFT CHIMNEY OF HOUSE, 2 MILES, N 84 DEG
 HV6416'40 MIN W.  LEFT EDGE OF CABIN ON PAUL POINT, 1-1/8 MILES, N 83 DEG
 HV6416'51 MIN W.  TANGENT OF OUTSIDE END OF WINGATE WHARF, 7/8 MILE,
 HV6416'N 57 DEG 28 MIN W.  CHIMNEY ON WAITING ROOM WINGATE WHARF, 7/8 MILE,
 HV6416'N 56 DEG 54 MIN W.  FRONT PEAK OF STORE BUILDING, 3/4 MILE, N 29 DEG
 HV6416'16 MIN W.  PEAK OF OYSTER HOUSE, 3/4 MILE, N 20 DEG 34 MIN W.
 HV6416'NEAR GABLE OF HOUSE, 1 MILE, N 02 DEG 19 MIN E.  OUTSIDE CHIMNEY
 HV6416'OF HOUSE, 1-1/8 MILES, N 74 DEG 58 MIN E.
 HV6416
 HV6416                          STATION RECOVERY (1932)
 HV6416
 HV6416'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HV6416'THIS STATION WAS NOT FOUND AFTER A THOROUGH SEARCH BY A PARTY OF
 HV6416'FOUR MEN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4392 ***********************************************************************
 JU4392  DESIGNATION -  DUDLEY AZ MK
 JU4392  PID         -  JU4392
 JU4392  STATE/COUNTY-  MD/QUEEN ANNES
 JU4392  COUNTRY     -  US
 JU4392  USGS QUAD   -  CHURCH HILL (2017)
 JU4392
 JU4392                         *CURRENT SURVEY CONTROL
 JU4392  ______________________________________________________________________
 JU4392* NAD 83(1986) POSITION- 39 11 50.67   (N) 075 53 54.96   (W)   HD_HELD1
 JU4392* NAVD 88 ORTHO HEIGHT -     9.627 (meters)       31.58  (feet) ADJUSTED
 JU4392  ______________________________________________________________________
 JU4392  GEOID HEIGHT    -        -33.672 (meters)                     GEOID18
 JU4392  DYNAMIC HEIGHT  -          9.621 (meters)       31.56  (feet) COMP
 JU4392  MODELED GRAVITY -    980,104.9   (mgal)                       NAVD 88
 JU4392
 JU4392  VERT ORDER      -  SECOND    CLASS I
 JU4392
 JU4392.The horizontal coordinates were determined by differentially corrected
 JU4392.hand held GPS observations or other comparable positioning techniques
 JU4392.and have an estimated accuracy of +/- 3 meters.
 JU4392
 JU4392.The orthometric height was determined by differential leveling and
 JU4392.adjusted by the NATIONAL GEODETIC SURVEY
 JU4392.in July 1996.
 JU4392
 JU4392.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4392.GEOID18 height accuracy estimate available here.
 JU4392
 JU4392.Click photographs - Photos may exist for this station.
 JU4392
 JU4392.The dynamic height is computed by dividing the NAVD 88
 JU4392.geopotential number by the normal gravity value computed on the
 JU4392.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4392.degrees latitude (g = 980.6199 gals.).
 JU4392
 JU4392.The modeled gravity was interpolated from observed gravity values.
 JU4392
 JU4392;                    North         East    Units  Estimated Accuracy
 JU4392;SPC MD       -   170,495.0     495,139.0     MT  (+/- 3 meters HH1 GPS) 
 JU4392
 JU4392_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2240439068(NAD 83)
 JU4392
 JU4392                          SUPERSEDED SURVEY CONTROL
 JU4392
 JU4392.No superseded survey control is available for this station.
 JU4392
 JU4392_MARKER: DD = SURVEY DISK
 JU4392_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JU4392_SP_SET: HEADWALL
 JU4392_STAMPING: DUDLEY AZ 1960
 JU4392_MARK LOGO: MDSHA
 JU4392_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU4392_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4392+STABILITY: SURFACE MOTION
 JU4392_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4392+SATELLITE: SATELLITE OBSERVATIONS - November 20, 2011
 JU4392
 JU4392  HISTORY     - Date     Condition        Report By
 JU4392  HISTORY     - 1960     MONUMENTED       MDSHA
 JU4392  HISTORY     - 19910301 GOOD             MDSHA
 JU4392  HISTORY     - 20020301 GOOD             USPSQD
 JU4392  HISTORY     - 20111120 GOOD             GEOCAC
 JU4392
 JU4392                          STATION DESCRIPTION
 JU4392
 JU4392'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4392'THE MARKER IS LOCATED ABOUT 3.25 MI (5.23 KM) SOUTHEAST OF CRUMPTON,
 JU4392'1.0 MI (1.6 KM) NORTHWEST OF DUDLEY CORNERS AND ALONG THE EAST SIDE OF
 JU4392'STATE HIGHWAY 290.  IT IS ON ROAD RIGHT-OF-WAY.
 JU4392'
 JU4392'TO REACH FROM THE POST OFFICE IN CRUMPTON, GO SOUTH ON STATE HIGHWAY
 JU4392'290 FOR 3.4 MI (5.5 KM) TO THE MARKER ON THE LEFT.
 JU4392'
 JU4392'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JU4392'IN A DRILL HOLE IN A WINGWALL FOR A CONCRETE BOX CULVERT FOR RED LION
 JU4392'BRANCH NUMBERED 17028.  IT IS 26 FT (7.9 M) NORTHEAST OF THE CENTER OF
 JU4392'STATE HIGHWAY 290, 40 FT (12.2 M) SOUTHEAST OF THE NORTHWEST END OF OF
 JU4392'THE CULVERT AND ABOUT 1 FT (0.3 M) LOWER THAN THE ROAD SURFACE.
 JU4392
 JU4392                          STATION RECOVERY (2002)
 JU4392
 JU4392'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4392'REFERENCED BRIDGE NUMBERED 1702300.
 JU4392
 JU4392                          STATION RECOVERY (2011)
 JU4392
 JU4392'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JU4392'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6030 ***********************************************************************
 JV6030  DESIGNATION -  DUERLING
 JV6030  PID         -  JV6030
 JV6030  STATE/COUNTY-  MD/BALTIMORE
 JV6030  COUNTRY     -  US
 JV6030  USGS QUAD   -  REISTERSTOWN (2016)
 JV6030
 JV6030                         *CURRENT SURVEY CONTROL
 JV6030  ______________________________________________________________________
 JV6030* NAD 83(1991) POSITION- 39 27 58.77053(N) 076 47 24.89370(W)   ADJUSTED
 JV6030* NAVD 88 ORTHO HEIGHT -   219.    (meters)      719.    (feet) SCALED
 JV6030  ______________________________________________________________________
 JV6030  GEOID HEIGHT    -        -32.125 (meters)                     GEOID18
 JV6030  LAPLACE CORR    -         -2.93  (seconds)                    DEFLEC18
 JV6030  HORZ ORDER      -  FIRST
 JV6030
 JV6030.The horizontal coordinates were established by classical geodetic methods
 JV6030.and adjusted by the National Geodetic Survey in January 1992.
 JV6030
 JV6030.The orthometric height was scaled from a topographic map.
 JV6030
 JV6030.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6030.GEOID18 height accuracy estimate available here.
 JV6030
 JV6030.Click photographs - Photos may exist for this station.
 JV6030
 JV6030.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6030
 JV6030. The following values were computed from the NAD 83(1991) position.
 JV6030
 JV6030;                    North         East     Units Scale Factor Converg.
 JV6030;SPC MD       -   199,796.884   418,050.204   MT  1.00000290   +0 07 53.9
 JV6030;SPC MD       -   655,500.28  1,371,553.04   sFT  1.00000290   +0 07 53.9
 JV6030;UTM  18      - 4,370,056.828   345,997.104   MT  0.99989201   -1 08 17.3
 JV6030
 JV6030!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6030!SPC MD       -   0.99997072  x   1.00000290  =   0.99997362
 JV6030!UTM  18      -   0.99997072  x   0.99989201  =   0.99986273
 JV6030
 JV6030:                Primary Azimuth Mark                     Grid Az
 JV6030:SPC MD       -  DUERLING AZ MK                           279 07 57.1
 JV6030:UTM  18      -  DUERLING AZ MK                           280 24 08.3
 JV6030
 JV6030_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4599770056(NAD 83)
 JV6030
 JV6030|---------------------------------------------------------------------|
 JV6030| PID    Reference Object                     Distance      Geod. Az  |
 JV6030|                                                           dddmmss.s |
 JV6030| CA9364 DUERLING RM 1                        44.117 METERS 02238     |
 JV6030| CA9365 DUERLING RM 2                        12.939 METERS 14020     |
 JV6030| JV6033 PLEASANT HILL METRO WATER TANK      APPROX. 4.1 KM 1800437.7 |
 JV6030| CA9363 DUERLING AZ MK                                     2791551.0 |
 JV6030| JV6026 REISTERSTOWN METRO WATER TANK       APPROX. 3.4 KM 2842146.0 |
 JV6030|---------------------------------------------------------------------|
 JV6030
 JV6030                          SUPERSEDED SURVEY CONTROL
 JV6030
 JV6030  NAD 83(1986)-  39 27 58.76803(N)    076 47 24.90044(W) AD(       ) 1
 JV6030  NAD 27      -  39 27 58.38900(N)    076 47 25.97900(W) AD(       ) 1
 JV6030
 JV6030.Superseded values are not recommended for survey control.
 JV6030
 JV6030.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6030.See file dsdata.pdf to determine how the superseded data were derived.
 JV6030
 JV6030_MARKER: DS = TRIANGULATION STATION DISK
 JV6030_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6030_STAMPING: DUERLING 1938
 JV6030_MARK LOGO: CGS
 JV6030_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6030+STABILITY: SURFACE MOTION
 JV6030
 JV6030  HISTORY     - Date     Condition        Report By
 JV6030  HISTORY     - 1938     MONUMENTED       CGS
 JV6030
 JV6030                          STATION DESCRIPTION
 JV6030
 JV6030'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV6030'THE STATION IS ON THE PROPERTY OF MR. J.E. DUERLING AT THE
 JV6030'INTERSECTION OF BOND AVENUE AND TIMBER GROVE ROAD.
 JV6030'
 JV6030'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV6030'BRONZE DISKS SET IN CONCRETE.
 JV6030'
 JV6030'AZIMUTH MARK IS W OF STATION ON S SIDE OF BOND AVENUE AT A SHARP
 JV6030'BEND IN THE ROAD.
 JV6030'
 JV6030'TO REACH FROM BALTIMORE, GO NW ON REISTERSTOWN ROAD TO THE
 JV6030'UNDER PASS AT WESTERN MARYLAND RAILROAD AT OWINGS MILLS.  CONTINUE
 JV6030'ON REISTERSTOWN ROAD 2.0 MILES TO TIMBER GROVE ROAD AT
 JV6030'DELIGHT.  TURN RIGHT ON TIMBER GROVE ROAD WHICH WINDS
 JV6030'NORTHEASTERLY AND GO 2.25 MILES TO THE STATION.  MARK IS ON THE W
 JV6030'SIDE OF THE ROAD SW OF THE INTERSECTION OF BOND AVENUE AND
 JV6030'TIMBER GROVE ROAD.  THESE TWO ROADS MERGE IN A SHARP BEND
 JV6030'AS NEITHER ROAD HAS EVER BEEN EXTENDED PAST THE INTERSECTION.
 JV6030'
 JV6030'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5587 ***********************************************************************
 JV5587  DESIGNATION -  DUGAN
 JV5587  PID         -  JV5587
 JV5587  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5587  COUNTRY     -  US
 JV5587  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5587
 JV5587                         *CURRENT SURVEY CONTROL
 JV5587  ______________________________________________________________________
 JV5587* NAD 83(1991) POSITION- 39 15 18.48171(N) 076 37 05.84250(W)   ADJUSTED
 JV5587* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 JV5587  ______________________________________________________________________
 JV5587  GEOID HEIGHT    -        -32.766 (meters)                     GEOID18
 JV5587  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 JV5587  HORZ ORDER      -  SECOND
 JV5587
 JV5587.The horizontal coordinates were established by classical geodetic methods
 JV5587.and adjusted by the National Geodetic Survey in January 1992.
 JV5587
 JV5587.The orthometric height was scaled from a topographic map.
 JV5587
 JV5587.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5587.GEOID18 height accuracy estimate available here.
 JV5587
 JV5587.Click photographs - Photos may exist for this station.
 JV5587
 JV5587.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5587
 JV5587. The following values were computed from the NAD 83(1991) position.
 JV5587
 JV5587;                    North         East     Units Scale Factor Converg.
 JV5587;SPC MD       -   176,398.387   432,946.094   MT  0.99997172   +0 14 22.5
 JV5587;SPC MD       -   578,733.71  1,420,423.98   sFT  0.99997172   +0 14 22.5
 JV5587;UTM  18      - 4,346,337.619   360,370.369   MT  0.99984006   -1 01 27.0
 JV5587
 JV5587!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5587!SPC MD       -   1.00000330  x   0.99997172  =   0.99997502
 JV5587!UTM  18      -   1.00000330  x   0.99984006  =   0.99984335
 JV5587
 JV5587:                Primary Azimuth Mark                     Grid Az
 JV5587:SPC MD       -  WESTERN                                  049 30 54.3
 JV5587:UTM  18      -  WESTERN                                  050 46 43.8
 JV5587
 JV5587_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6037046337(NAD 83)
 JV5587
 JV5587|---------------------------------------------------------------------|
 JV5587| PID    Reference Object                     Distance      Geod. Az  |
 JV5587|                                                           dddmmss.s |
 JV5587| JV5592 CURB                                430.451 METERS 0284844.1 |
 JV5587| JV5591 HANOVER ST BRIDGE NE TOWER CUP      373.495 METERS 03115     |
 JV5587| JV5564 LOCKE TANK                          APPROX. 0.8 KM 0472620.2 |
 JV5587| JV5544 WESTERN                             APPROX. 1.9 KM 0494516.8 |
 JV5587| CA9366 DUGAN RM 1                           19.320 METERS 13934     |
 JV5587| CA9367 DUGAN RM 2                           19.286 METERS 28638     |
 JV5587|---------------------------------------------------------------------|
 JV5587
 JV5587                          SUPERSEDED SURVEY CONTROL
 JV5587
 JV5587  NAD 83(1986)-  39 15 18.47822(N)    076 37 05.85150(W) AD(       ) 2
 JV5587  NAD 27      -  39 15 18.09400(N)    076 37 06.96600(W) AD(       ) 2
 JV5587
 JV5587.Superseded values are not recommended for survey control.
 JV5587
 JV5587.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5587.See file dsdata.pdf to determine how the superseded data were derived.
 JV5587
 JV5587_MARKER: DS = TRIANGULATION STATION DISK
 JV5587_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5587_STAMPING: DUGAN 1934
 JV5587_MARK LOGO: CGS
 JV5587_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5587+STABILITY: SURFACE MOTION
 JV5587
 JV5587  HISTORY     - Date     Condition        Report By
 JV5587  HISTORY     - 1934     MONUMENTED       CGS
 JV5587  HISTORY     - 1940     GOOD             CGS
 JV5587  HISTORY     - 1966     MARK NOT FOUND   CGS
 JV5587
 JV5587                          STATION DESCRIPTION
 JV5587
 JV5587'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5587'STATION IS LOCATED ON THE SOUTHERN SHORE OF THE MIDDLE BRANCH
 JV5587'OF THE PATAPSCO RIVER, ON A HILL 200 YARDS SW OF SOUTHERN END
 JV5587'OF HANOVER STREET BRIDGE, 5 YARDS N OF DIM TRAIL, 75 YARDS SE
 JV5587'OF EDGE OF BLUFF, 3 YARDS NW OF A 12-INCH TREE.
 JV5587'
 JV5587'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5587'CONCRETE.
 JV5587'
 JV5587'HEIGHT OF LIGHT ABOVE STATION MARK 5 METERS.
 JV5587
 JV5587                          STATION RECOVERY (1940)
 JV5587
 JV5587'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5587'STATION WAS RECOVERED IN GOOD CONDITION.  THE REFERENCE MARKS
 JV5587'WERE RECOVERED BUT THEY HAD BEEN MARRED, AND THE DISTANCE CHECKS
 JV5587'INDICATE THAT THEY MAY HAVE BEEN DISTURBED.
 JV5587'
 JV5587'TO REACH THE STATION FROM THE INTERSECTION OF ANNAPOLIS ROAD
 JV5587'AND WATERVIEW AVENUE IN WESTPORT, TURN LEFT ON WATERVIEW AVENUE
 JV5587'AND GO 0.2 MILE TO CINDER ROAD LEADING LEFT INTO BRICKYARD, 0.05
 JV5587'MILE AFTER CROSSING RAILROAD TRACKS.  GO 0.35 MILE TO WFBR TOWERS
 JV5587'LOCATED IN WATER ON LEFT, CONTINUE 0.4 MILE TO FENCE OF
 JV5587'SHEET-IRON PARTIALLY OBSTRUCTING ROAD, PASS FENCE AND CONTINUE
 JV5587'0.05 MILE TO DRAW IN FACE OF BLUFF ON RIGHT.  LEAVE TRUCK AND
 JV5587'GO UP TO HEAD OF DRAW.  STATION IS ABOUT 75 FEET N AND E OF
 JV5587'THE HEAD OF THIS DRAW.
 JV5587'
 JV5587'NOTE--IT IS BELIEVED THAT IN 1934 THE INITIAL SHOULD HAVE BEEN
 JV5587'ROAD INSTEAD OF WESTERN.
 JV5587
 JV5587                          STATION RECOVERY (1966)
 JV5587
 JV5587'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (MKW)
 JV5587'STATION HAS BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6743 ***********************************************************************
 JV6743  DESIGNATION -  DULANEY
 JV6743  PID         -  JV6743
 JV6743  STATE/COUNTY-  MD/HARFORD
 JV6743  COUNTRY     -  US
 JV6743  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6743
 JV6743                         *CURRENT SURVEY CONTROL
 JV6743  ______________________________________________________________________
 JV6743* NAD 83(2011) POSITION- 39 36 29.44977(N) 076 27 48.52037(W)   ADJUSTED
 JV6743* NAD 83(2011) ELLIP HT-   153.374 (meters)        (06/27/12)   ADJUSTED
 JV6743* NAD 83(2011) EPOCH   -  2010.00
 JV6743* NAVD 88 ORTHO HEIGHT -   186.0   (meters)      610.    (feet) GPS OBS
 JV6743  ______________________________________________________________________
 JV6743  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6743  GEOID HEIGHT    -        -32.870 (meters)                     GEOID93
 JV6743  GEOID HEIGHT    -        -32.546 (meters)                     GEOID18
 JV6743  NAD 83(2011) X  -  1,151,758.569 (meters)                     COMP
 JV6743  NAD 83(2011) Y  - -4,783,983.618 (meters)                     COMP
 JV6743  NAD 83(2011) Z  -  4,044,661.954 (meters)                     COMP
 JV6743  LAPLACE CORR    -         -3.38  (seconds)                    DEFLEC18
 JV6743
 JV6743  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6743  Standards:
 JV6743         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6743            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6743  -------------------------------------------------------------------
 JV6743  NETWORK    1.28   3.10           0.57   0.44   1.58      0.36123297
 JV6743  -------------------------------------------------------------------
 JV6743  Click here for local accuracies and other accuracy information.
 JV6743
 JV6743.The horizontal coordinates were established by GPS observations
 JV6743.and adjusted by the National Geodetic Survey in June 2012.
 JV6743
 JV6743.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6743.been affixed to the stable North American tectonic plate. See 
 JV6743.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6743
 JV6743.The horizontal coordinates are valid at the epoch date displayed above
 JV6743.which is a decimal equivalence of Year/Month/Day.
 JV6743
 JV6743.The orthometric height was determined by GPS observations and a
 JV6743.high-resolution geoid model.
 JV6743
 JV6743.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6743.GEOID18 height accuracy estimate available here.
 JV6743
 JV6743.Click photographs - Photos may exist for this station.
 JV6743
 JV6743.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6743
 JV6743.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6743
 JV6743.The ellipsoidal height was determined by GPS observations
 JV6743.and is referenced to NAD 83.
 JV6743
 JV6743. The following values were computed from the NAD 83(2011) position.
 JV6743
 JV6743;                    North         East     Units Scale Factor Converg.
 JV6743;SPC MD       -   215,661.411   446,077.666   MT  1.00003150   +0 20 12.3
 JV6743;SPC MD       -   707,549.15  1,463,506.48   sFT  1.00003150   +0 20 12.3
 JV6743;UTM  18      - 4,385,293.621   374,364.314   MT  0.99979433   -0 55 59.3
 JV6743
 JV6743!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6743!SPC MD       -   0.99997594  x   1.00003150  =   1.00000744
 JV6743!UTM  18      -   0.99997594  x   0.99979433  =   0.99977027
 JV6743
 JV6743:                Primary Azimuth Mark                     Grid Az
 JV6743:SPC MD       -  DULANEY AZ MK 2                          022 05 21.5
 JV6743:UTM  18      -  DULANEY AZ MK 2                          023 21 33.1
 JV6743
 JV6743_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7436485293(NAD 83)
 JV6743
 JV6743|---------------------------------------------------------------------|
 JV6743| PID    Reference Object                     Distance      Geod. Az  |
 JV6743|                                                           dddmmss.s |
 JV6743| JV7296 DULANEY AZ MK 2                     APPROX. 0.6 KM 0222533.8 |
 JV6743|---------------------------------------------------------------------|
 JV6743
 JV6743                          SUPERSEDED SURVEY CONTROL
 JV6743
 JV6743  NAD 83(2007)-  39 36 29.45012(N)    076 27 48.52113(W) AD(2002.00) 0
 JV6743  ELLIP H (02/10/07)  153.393  (m)                       GP(2002.00)    
 JV6743  ELLIP H (08/30/02)  153.414  (m)                       GP(       ) 4 2
 JV6743  NAD 83(1991)-  39 36 29.44997(N)    076 27 48.51986(W) AD(       ) 1
 JV6743  ELLIP H (01/27/92)  153.395  (m)                       GP(       ) 4 1
 JV6743  NAD 83(1986)-  39 36 29.44303(N)    076 27 48.52649(W) AD(       ) 1
 JV6743  NGVD 29 (06/18/91)  186.2    (m)  UNKNOWN  model used  GPS OBS        
 JV6743
 JV6743.Superseded values are not recommended for survey control.
 JV6743
 JV6743.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6743.See file dsdata.pdf to determine how the superseded data were derived.
 JV6743
 JV6743_MARKER: DD = SURVEY DISK
 JV6743_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6743_STAMPING: 69 DULANEY 1989
 JV6743_MARK LOGO: MD-025
 JV6743_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6743_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6743+STABILITY: SURFACE MOTION
 JV6743_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6743+SATELLITE: SATELLITE OBSERVATIONS - December 09, 1993
 JV6743
 JV6743  HISTORY     - Date     Condition        Report By
 JV6743  HISTORY     - 1989     MONUMENTED       RDA
 JV6743  HISTORY     - 19931209 GOOD             GEOMET
 JV6743
 JV6743                          STATION DESCRIPTION
 JV6743
 JV6743'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6743'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 1
 JV6743'MILE EAST OF JARRETTSVILLE.
 JV6743'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 23, STATE
 JV6743'HIGHWAY 165, AND WEST JARRETTSVILLE ROAD PROCEED EAST ALONG WEST
 JV6743'JARRETTSVILLE ROAD 0.8 MILES TO ITS INTERSECTION WITH POWER LINE
 JV6743'EASEMENT ROAD AND THE STATION ON THE LEFT.
 JV6743'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6743'ABOUT 1 INCH BELOW GROUND STAMPED 69 DULANEY 1989.  THE STATION IS
 JV6743'36.4 FEET NORTH OF THE CENTERLINE OF WEST JARRETTSVILLE ROAD, 26.0
 JV6743'WEST OF THE CENTERLINE OF POWERLINE ACCESS ROAD, AND 44.8 FEET SOUTH
 JV6743'OF THE SOUTHEAST LEG OF WEST HIGH TENSION TOWER.
 JV6743
 JV6743                          STATION RECOVERY (1993)
 JV6743
 JV6743'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6743'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7296 ***********************************************************************
 JV7296  DESIGNATION -  DULANEY AZ MK 2
 JV7296  PID         -  JV7296
 JV7296  STATE/COUNTY-  MD/HARFORD
 JV7296  COUNTRY     -  US
 JV7296  USGS QUAD   -  JARRETTSVILLE (2016)
 JV7296
 JV7296                         *CURRENT SURVEY CONTROL
 JV7296  ______________________________________________________________________
 JV7296* NAD 83(2011) POSITION- 39 36 47.11800(N) 076 27 39.09278(W)   ADJUSTED
 JV7296* NAD 83(2011) ELLIP HT-   144.754 (meters)        (06/27/12)   ADJUSTED
 JV7296* NAD 83(2011) EPOCH   -  2010.00
 JV7296* NAVD 88 ORTHO HEIGHT -   177.3   (meters)      582.    (feet) GPS OBS
 JV7296  ______________________________________________________________________
 JV7296  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7296  GEOID HEIGHT    -        -32.870 (meters)                     GEOID93
 JV7296  GEOID HEIGHT    -        -32.550 (meters)                     GEOID18
 JV7296  NAD 83(2011) X  -  1,151,894.337 (meters)                     COMP
 JV7296  NAD 83(2011) Y  - -4,783,586.748 (meters)                     COMP
 JV7296  NAD 83(2011) Z  -  4,045,076.259 (meters)                     COMP
 JV7296  LAPLACE CORR    -         -3.38  (seconds)                    DEFLEC18
 JV7296
 JV7296  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7296  Standards:
 JV7296         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7296            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7296  -------------------------------------------------------------------
 JV7296  NETWORK    1.51   3.31           0.66   0.55   1.69      0.27471869
 JV7296  -------------------------------------------------------------------
 JV7296  Click here for local accuracies and other accuracy information.
 JV7296
 JV7296.The horizontal coordinates were established by GPS observations
 JV7296.and adjusted by the National Geodetic Survey in June 2012.
 JV7296
 JV7296.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7296.been affixed to the stable North American tectonic plate. See 
 JV7296.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7296
 JV7296.The horizontal coordinates are valid at the epoch date displayed above
 JV7296.which is a decimal equivalence of Year/Month/Day.
 JV7296
 JV7296.The orthometric height was determined by GPS observations and a
 JV7296.high-resolution geoid model.
 JV7296
 JV7296.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7296.GEOID18 height accuracy estimate available here.
 JV7296
 JV7296.Click photographs - Photos may exist for this station.
 JV7296
 JV7296.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7296
 JV7296.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7296
 JV7296.The ellipsoidal height was determined by GPS observations
 JV7296.and is referenced to NAD 83.
 JV7296
 JV7296. The following values were computed from the NAD 83(2011) position.
 JV7296
 JV7296;                    North         East     Units Scale Factor Converg.
 JV7296;SPC MD       -   216,207.648   446,299.351   MT  1.00003260   +0 20 18.2
 JV7296;SPC MD       -   709,341.26  1,464,233.79   sFT  1.00003260   +0 20 18.2
 JV7296;UTM  18      - 4,385,834.682   374,597.995   MT  0.99979361   -0 55 53.6
 JV7296
 JV7296!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7296!SPC MD       -   0.99997729  x   1.00003260  =   1.00000989
 JV7296!UTM  18      -   0.99997729  x   0.99979361  =   0.99977091
 JV7296
 JV7296:                Primary Azimuth Mark                     Grid Az
 JV7296:SPC MD       -  DULANEY                                  202 05 21.6
 JV7296:UTM  18      -  DULANEY                                  203 21 33.4
 JV7296
 JV7296_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7459785834(NAD 83)
 JV7296
 JV7296|---------------------------------------------------------------------|
 JV7296| PID    Reference Object                     Distance      Geod. Az  |
 JV7296|                                                           dddmmss.s |
 JV7296| JV6743 DULANEY                             APPROX. 0.6 KM 2022539.8 |
 JV7296|---------------------------------------------------------------------|
 JV7296
 JV7296                          SUPERSEDED SURVEY CONTROL
 JV7296
 JV7296  NAD 83(2007)-  39 36 47.11830(N)    076 27 39.09351(W) AD(2002.00) 0
 JV7296  ELLIP H (02/10/07)  144.772  (m)                       GP(2002.00)    
 JV7296  ELLIP H (08/30/02)  144.788  (m)                       GP(       ) 4 2
 JV7296  NAD 83(1991)-  39 36 47.11824(N)    076 27 39.09222(W) AD(       ) 1
 JV7296  ELLIP H (08/17/94)  144.771  (m)                       GP(       ) 4 1
 JV7296
 JV7296.Superseded values are not recommended for survey control.
 JV7296
 JV7296.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7296.See file dsdata.pdf to determine how the superseded data were derived.
 JV7296
 JV7296_MARKER: DD = SURVEY DISK
 JV7296_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7296_STAMPING: 69 DULANEY AZ MK 2 1993
 JV7296_MARK LOGO: MD-025
 JV7296_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7296_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7296+STABILITY: SURFACE MOTION
 JV7296_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7296+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7296
 JV7296  HISTORY     - Date     Condition        Report By
 JV7296  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7296
 JV7296                          STATION DESCRIPTION
 JV7296
 JV7296'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7296'THE AZIMUTH MARK IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV7296'1.0 MILES EAST OF JARRETTSVILLE.
 JV7296'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE HIGHWAY 23,
 JV7296'STATE HIGHWAY 165, AND WEST JARRETTSVILLE ROAD PROCEED EAST ALONG
 JV7296'WEST JARRETTSVILLE ROAD 0.8 MILES TO ITS INTERSECTION WITH A POWER
 JV7296'LINE ACCESS ROAD PASSING THE STATION ON THE LEFT.  TURN LEFT AND
 JV7296'PROCEED NORTH ALONG THE POWER LINE ACCESS ROAD 0.4 MILES TO THE
 JV7296'AZIMUTH MARK ON THE LEFT.
 JV7296'THE AZIMUTH MARK IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7296'CONCRETE FLUSH WITH THE GROUND STAMPED 69 DULANEY AZ MK 2 1993.
 JV7296'THE AZIMUTH MARK IS 158.2 FEET NORTHEAST FROM THE NORTH END OF THE
 JV7296'WEST GUARD RAIL, 157.8 FEET NORTH FROM THE NORTH END OF THE EAST
 JV7296'GUARD RAIL, AND 24.5 FEET NORTHWEST FROM THE CENTERLINE OF THE POWER
 JV7296'LINE ACCESS ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4095 ***********************************************************************
 HV4095  DESIGNATION -  DULCE
 HV4095  PID         -  HV4095
 HV4095  STATE/COUNTY-  MD/MONTGOMERY
 HV4095  COUNTRY     -  US
 HV4095  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4095
 HV4095                         *CURRENT SURVEY CONTROL
 HV4095  ______________________________________________________________________
 HV4095* NAD 83(1993) POSITION- 38 59 22.91415(N) 077 06 34.61095(W)   ADJUSTED
 HV4095* NAVD 88 ORTHO HEIGHT -   128.    (meters)      420.    (feet) SCALED
 HV4095  ______________________________________________________________________
 HV4095  GEOID HEIGHT    -        -31.852 (meters)                     GEOID18
 HV4095  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 HV4095  HORZ ORDER      -  SECOND
 HV4095
 HV4095.The horizontal coordinates were established by classical geodetic methods
 HV4095.and adjusted by the National Geodetic Survey in November 1994.
 HV4095
 HV4095.The orthometric height was scaled from a topographic map.
 HV4095
 HV4095.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4095.GEOID18 height accuracy estimate available here.
 HV4095
 HV4095.Click photographs - Photos may exist for this station.
 HV4095
 HV4095.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4095
 HV4095. The following values were computed from the NAD 83(1993) position.
 HV4095
 HV4095;                    North         East     Units Scale Factor Converg.
 HV4095;SPC MD       -   146,868.325   390,503.603   MT  0.99995182   -0 04 07.7
 HV4095;SPC MD       -   481,850.50  1,281,177.24   sFT  0.99995182   -0 04 07.7
 HV4095;SPC VA N     - 2,147,769.791 3,620,453.303   MT  0.99996944   +0 52 04.0
 HV4095;SPC VA N     - 7,046,474.72 11,878,103.88   sFT  0.99996944   +0 52 04.0
 HV4095;UTM  18      - 4,317,750.291   317,289.633   MT  1.00001108   -1 19 39.7
 HV4095
 HV4095!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4095!SPC MD       -   0.99998495  x   0.99995182  =   0.99993677
 HV4095!SPC VA N     -   0.99998495  x   0.99996944  =   0.99995439
 HV4095!UTM  18      -   0.99998495  x   1.00001108  =   0.99999603
 HV4095
 HV4095:                Primary Azimuth Mark                     Grid Az
 HV4095:SPC MD       -  ALTA VISTA WSSD 1927                     001 53 50.8
 HV4095:SPC VA N     -  ALTA VISTA WSSD 1927                     000 57 39.1
 HV4095:UTM  18      -  ALTA VISTA WSSD 1927                     003 09 22.8
 HV4095
 HV4095_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1728917750(NAD 83)
 HV4095
 HV4095|---------------------------------------------------------------------|
 HV4095| PID    Reference Object                     Distance      Geod. Az  |
 HV4095|                                                           dddmmss.s |
 HV4095| JV4277 ALTA VISTA WSSD 1927                APPROX. 1.7 KM 0014943.1 |
 HV4095| DC6219 DULCE RM                             11.483 METERS 00326     |
 HV4095| JV4286 FOREST GLEN STANDPIPE               APPROX. 5.2 KM 0625108.8 |
 HV4095|---------------------------------------------------------------------|
 HV4095
 HV4095                          SUPERSEDED SURVEY CONTROL
 HV4095
 HV4095  NAD 83(1991)-  38 59 22.91375(N)    077 06 34.61208(W) AD(       ) 2
 HV4095  NAD 83(1986)-  38 59 22.91314(N)    077 06 34.62163(W) AD(       ) 2
 HV4095  NAD 27      -  38 59 22.52700(N)    077 06 35.69900(W) AD(       ) 2
 HV4095  USSD        -  38 59 22.85300(N)    077 06 35.51000(W) AD(       ) 3
 HV4095
 HV4095.Superseded values are not recommended for survey control.
 HV4095
 HV4095.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4095.See file dsdata.pdf to determine how the superseded data were derived.
 HV4095
 HV4095_MARKER: DS = TRIANGULATION STATION DISK
 HV4095_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4095_MARK LOGO: CGS
 HV4095_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4095+STABILITY: SURFACE MOTION
 HV4095
 HV4095  HISTORY     - Date     Condition        Report By
 HV4095  HISTORY     - 1917     MONUMENTED       CGS
 HV4095  HISTORY     - 1952     GOOD             CGS
 HV4095  HISTORY     - 19950710 MARK NOT FOUND   USPSQD
 HV4095  HISTORY     - 20020310 MARK NOT FOUND   USPSQD
 HV4095
 HV4095                          STATION DESCRIPTION
 HV4095
 HV4095'DESCRIBED BY COAST AND GEODETIC SURVEY 1917 (CVH)
 HV4095'STATION IS ABOUT 1/2 MILE W OF BETHESDA, JUST NE OF THE
 HV4095'RESIDENCE OF A.C. RUEBSAM.
 HV4095'
 HV4095'THE SURFACE AND UNDERGROUND MARKS ARE STANDARD BRONZE DISKS
 HV4095'THE SURFACE
 HV4095'MARK IS IN A GRANITE POST INSTEAD OF CONCRETE.
 HV4095'
 HV4095'THE REFERENCE MARK IS A STANDARD BRONZE DISK WEDGED IN A DRILL
 HV4095'HOLE IN OUTCROPPING BEDROCK.  IT IS
 HV4095'11.483 METERS (37.67 FEET) FROM STATION N 3 DEG 26 MIN E.
 HV4095'OUTSIDE CORNER OF SE PORCH POST IS 5.12 METERS (16.80
 HV4095'FEET) FROM STATION S 5 DEG 06 MIN W, AND THE NE CORNER OF
 HV4095'HOUSE IS 13.11 METERS (43.0 FEET) DISTANT N 88 DEG 05 MIN E.
 HV4095
 HV4095                          STATION RECOVERY (1952)
 HV4095
 HV4095'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (IWS)
 HV4095'THE STATION AND REFERENCE MARK WERE RECOVERED AND FOUND TO BE
 HV4095'IN GOOD CONDITION.  DISTANCES AND DIRECTIONS WERE NOT
 HV4095'REMEASURED AT THIS DATE.
 HV4095'
 HV4095'TO REACH THE STATION FROM THE INTERSECTION OF WISCONSIN
 HV4095'AVENUE, EAST-WEST HIGHWAY, AND GEORGETOWN ROAD IN BETHESDA, GO
 HV4095'NW ON GEORGETOWN ROAD FOR ABOUT 0.3 MILE TO WILSON LANE.  TURN
 HV4095'LEFT ON WILSON LANE AND GO 0.6 MILE TO MARION STREET.  TURN
 HV4095'RIGHT ON MARION STREET AND GO ONE BLOCK TO GORDON ROAD.  THE
 HV4095'MARK IS JUST N OF THIS STREET INTERSECTION.  IT IS IN THE
 HV4095'FLAGSTONE WALK OF THE RESIDENCE WHICH IS INCLOSED BY A FENCE.
 HV4095
 HV4095                          STATION RECOVERY (1995)
 HV4095
 HV4095'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV4095'MARK NOT FOUND.
 HV4095
 HV4095                          STATION RECOVERY (2002)
 HV4095
 HV4095'RECOVERY NOTE BY US POWER SQUADRON 2002 (JJS)
 HV4095'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6216 ***********************************************************************
 HV6216  DESIGNATION -  DULL
 HV6216  PID         -  HV6216
 HV6216  STATE/COUNTY-  MD/QUEEN ANNES
 HV6216  COUNTRY     -  US
 HV6216  USGS QUAD   -  KENT ISLAND (2016)
 HV6216
 HV6216                         *CURRENT SURVEY CONTROL
 HV6216  ______________________________________________________________________
 HV6216* NAD 83(1991) POSITION- 38 56 18.75523(N) 076 15 01.99508(W)   ADJUSTED
 HV6216* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6216  ______________________________________________________________________
 HV6216  GEOID HEIGHT    -        -33.828 (meters)                     GEOID18
 HV6216  LAPLACE CORR    -         -4.42  (seconds)                    DEFLEC18
 HV6216  HORZ ORDER      -  THIRD
 HV6216
 HV6216.The horizontal coordinates were established by classical geodetic methods
 HV6216.and adjusted by the National Geodetic Survey in January 1992.
 HV6216
 HV6216.The orthometric height was scaled from a topographic map.
 HV6216
 HV6216.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6216.GEOID18 height accuracy estimate available here.
 HV6216
 HV6216.Click photographs - Photos may exist for this station.
 HV6216
 HV6216.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6216
 HV6216. The following values were computed from the NAD 83(1991) position.
 HV6216
 HV6216;                    North         East     Units Scale Factor Converg.
 HV6216;SPC MD       -   141,450.620   464,973.970   MT  0.99995045   +0 28 13.4
 HV6216;SPC MD       -   464,075.91  1,525,502.10   sFT  0.99995045   +0 28 13.4
 HV6216;UTM  18      - 4,310,700.123   391,616.878   MT  0.99974465   -0 47 09.7
 HV6216
 HV6216!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6216!SPC MD       -   1.00000519  x   0.99995045  =   0.99995564
 HV6216!UTM  18      -   1.00000519  x   0.99974465  =   0.99974984
 HV6216
 HV6216:                Primary Azimuth Mark                     Grid Az
 HV6216:SPC MD       -  KIRWAN RESET                             356 32 00.2
 HV6216:UTM  18      -  KIRWAN RESET                             357 47 23.3
 HV6216
 HV6216_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9161610700(NAD 83)
 HV6216
 HV6216|---------------------------------------------------------------------|
 HV6216| PID    Reference Object                     Distance      Geod. Az  |
 HV6216|                                                           dddmmss.s |
 HV6216| HV5822 BRIAN REF STA                       APPROX. 3.4 KM 1033226.7 |
 HV6216| HV6184 KIRWAN RESET                        APPROX. 1.8 KM 3570013.6 |
 HV6216|---------------------------------------------------------------------|
 HV6216
 HV6216                          SUPERSEDED SURVEY CONTROL
 HV6216
 HV6216  NAD 83(1986)-  38 56 18.75085(N)    076 15 02.00753(W) AD(       ) 3
 HV6216  NAD 27      -  38 56 18.33700(N)    076 15 03.18300(W) AD(       ) 3
 HV6216  USSD        -  38 56 18.73200(N)    076 15 02.96800(W) AD(       ) 3
 HV6216
 HV6216.Superseded values are not recommended for survey control.
 HV6216
 HV6216.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6216.See file dsdata.pdf to determine how the superseded data were derived.
 HV6216
 HV6216_MARKER: U = CONCRETE POST
 HV6216_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6216_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6216_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6216
 HV6216  HISTORY     - Date     Condition        Report By
 HV6216  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6216  HISTORY     - 1940     POOR             CGS
 HV6216  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6216
 HV6216                          STATION DESCRIPTION
 HV6216
 HV6216'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6216'STATION IS ON THE WESTERN SHORE OF PROSPECT BAY, ON POINT AT
 HV6216'NORTHERN SIDE OF ENTRANCE TO A COVE, ABOUT 2 MILES S OF KENT
 HV6216'NARROWS RAILROAD BRIDGE, 7/8 MILE WSW OF HOODS POINT, AND 1 MILE
 HV6216'N OF NARROWS POINT, IN MARSHLAND, ABOUT 1 FOOT ABOVE HIGH WATER,
 HV6216'30 YARDS W OF SHORE, 40 YARDS NE OF SHORE, AND 80 YARDS NNW OF
 HV6216'EXTREME END OF POINT.  STATION MARK IS MARKED BY A HOLE IN THE
 HV6216'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6216'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV6216'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HV6216'ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS CENTER OF
 HV6216'2-INCH DRAINTILE PIPE BURIED WITH THE TOP 2 INCHES BELOW
 HV6216'THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6216'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY OF ELL OF
 HV6216'HOUSE, 3/4 MILE, N 33 DEG 54 MIN W.  NEAR PEAK OF FISHERMANS INN,
 HV6216'2-1/8 MILES, N 7 DEG 01 MIN E.  CHIMNEY OF HOUSE, 1-1/2 MILES,
 HV6216'N 34 DEG 53 MIN E.  CHIMNEY OF HOUSE IN TREES, 1-1/4 MILES, N 53 DEG
 HV6216'09 MIN E.  CHIMNEY OF HOUSE, 2-1/4 MILES, S 78 DEG 11 MIN E.  CHIMNEY
 HV6216'OF OLD WHARF HOUSE, 4 MILES, S 44 DEG 14 MIN E.  LEFT TANGENT OF
 HV6216'PARSONS ISLAND, 1-7/8 MILES, S 13 DEG 19 MIN E.
 HV6216
 HV6216                          STATION RECOVERY (1940)
 HV6216
 HV6216'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6216'TOP OF STATION MARK COMPLETELY DISINTEGRATED.  MARK APPARENTLY
 HV6216'UNMOVED.
 HV6216'
 HV6216'LOCATION--ON THE WESTERN SHORE OF PROSPECT BAY, ON POINT AT
 HV6216'NORTHERN SIDE OF ENTRANCE TO A LARGE COVE, ABOUT 2 MILES S OF
 HV6216'KENT NARROWS RAILROAD BRIDGE, IN MARSHLAND AT HIGH-WATER MARK,
 HV6216'49 YARDS N OF EXTREME POINT OF MARSH, 11 YARDS W OF EDGE OF MARSH,
 HV6216'AND 42 YARDS S OF EDGE OF MARSH.
 HV6216'
 HV6216'RECOMMEND THAT NEW STANDARD C. AND G.S. MARK BE INSTALLED.
 HV6216
 HV6216                          STATION RECOVERY (1961)
 HV6216
 HV6216'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6216'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  THE POINT ON
 HV6216'WHICH THE STATION WAS LOCATED HAS ERODED BADLY, THE END OF THE
 HV6216'POINT IS NOW AN ISLAND.  STATION IS BELIEVED TO HAVE BEEN
 HV6216'DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1806 ***********************************************************************
 HU1806  DESIGNATION -  DUMP
 HU1806  PID         -  HU1806
 HU1806  STATE/COUNTY-  MD/WICOMICO
 HU1806  COUNTRY     -  US
 HU1806  USGS QUAD   -  HEBRON (2016)
 HU1806
 HU1806                         *CURRENT SURVEY CONTROL
 HU1806  ______________________________________________________________________
 HU1806* NAD 83(1991) POSITION- 38 27 28.91854(N) 075 38 53.67888(W)   ADJUSTED
 HU1806* NAVD 88 ORTHO HEIGHT -    12.9   (meters)       42.    (feet) VERTCON3
 HU1806  ______________________________________________________________________
 HU1806  GEOID HEIGHT    -        -35.682 (meters)                     GEOID18
 HU1806  LAPLACE CORR    -         -1.43  (seconds)                    DEFLEC18
 HU1806  HORZ ORDER      -  SECOND
 HU1806
 HU1806.The horizontal coordinates were established by classical geodetic methods
 HU1806.and adjusted by the National Geodetic Survey in January 1992.
 HU1806
 HU1806.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1806.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1806
 HU1806.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1806.GEOID18 height accuracy estimate available here.
 HU1806
 HU1806.Click photographs - Photos may exist for this station.
 HU1806
 HU1806.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1806
 HU1806. The following values were computed from the NAD 83(1991) position.
 HU1806
 HU1806;                    North         East     Units Scale Factor Converg.
 HU1806;SPC MD       -    88,718.371   517,978.680   MT  0.99997627   +0 50 54.3
 HU1806;SPC MD       -   291,070.19  1,699,401.72   sFT  0.99997627   +0 50 54.3
 HU1806;UTM  18      - 4,256,835.708   443,441.431   MT  0.99963939   -0 24 11.4
 HU1806
 HU1806!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1806!SPC MD       -   1.00000358  x   0.99997627  =   0.99997985
 HU1806!UTM  18      -   1.00000358  x   0.99963939  =   0.99964297
 HU1806
 HU1806_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4344156835(NAD 83)
 HU1806
 HU1806|---------------------------------------------------------------------|
 HU1806| PID    Reference Object                     Distance      Geod. Az  |
 HU1806|                                                           dddmmss.s |
 HU1806| HU1828 BOUNDARY MON 32 E W DE MD            48.397 METERS 02025     |
 HU1806| HU1805 MONUMENT E W 32 DE MD                75.476 METERS 02025     |
 HU1806| DC7251 DUMP RM 1                            14.718 METERS 06130     |
 HU1806| DC7252 DUMP RM 2                            21.422 METERS 16413     |
 HU1806| HU1807 HURLEY C                             69.073 METERS 18120     |
 HU1806| HU1809 DUMP A                              187.106 METERS 28744     |
 HU1806| DC7253 DUMP RM 3                            22.747 METERS 28827     |
 HU1806|---------------------------------------------------------------------|
 HU1806
 HU1806                          SUPERSEDED SURVEY CONTROL
 HU1806
 HU1806  NAD 83(1986)-  38 27 28.91377(N)    075 38 53.70207(W) AD(       ) 2
 HU1806  NAD 27      -  38 27 28.49702(N)    075 38 54.95514(W) AD(       ) 2
 HU1806  NGVD 29 (07/19/86)   13.1    (m)           43.     (f) VERT ANG       
 HU1806
 HU1806.Superseded values are not recommended for survey control.
 HU1806
 HU1806.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1806.See file dsdata.pdf to determine how the superseded data were derived.
 HU1806
 HU1806_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1806_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1806_STAMPING: DUMP 1974
 HU1806_MARK LOGO: NGS
 HU1806_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1806_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1806+STABILITY: SURFACE MOTION
 HU1806
 HU1806  HISTORY     - Date     Condition        Report By
 HU1806  HISTORY     - 1974     MONUMENTED       NGS
 HU1806  HISTORY     - 1974     GOOD             NGS
 HU1806  HISTORY     - 1976     GOOD             NGS
 HU1806  HISTORY     - 1977     GOOD             NGS
 HU1806  HISTORY     - 19810507 GOOD             NGS
 HU1806
 HU1806                          STATION DESCRIPTION
 HU1806
 HU1806'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1806'NO MEASUREMENT BETWEEN REFERENCE MARKS DUE TO BRUSH ON LINE.
 HU1806'
 HU1806'NO SUITABLE PLACE TO ESTABLISH AN AZIMUTH MARK.
 HU1806'
 HU1806'THE STATION IS LOCATED ABOUT 3-1/2 MILES WEST OF DELMAR, DELAWARE,
 HU1806'3-1/2 MILES NORTH OF HEBRON, MARYLAND, 0.6 MILE EAST OF THE
 HU1806'MARYLAND-DELAWARE STATE LINE CORNER AND ON THE HIGHWAY 54
 HU1806'RIGHT-OF-WAY.
 HU1806'
 HU1806'TO REACH THE STATION FROM THE RAILROAD CROSSING AND STATE HIGHWAY
 HU1806'54 IN DELMAR, DELAWARE, GO WEST ON STATE HIGHWAY 54 FOR 0.2 MILE
 HU1806'TO A Y FORK.  TURN LEFT AND CONTINUE WEST ON PAVED ROAD FOR 0.35
 HU1806'MILE TO A Y FORK.  CONTINUE AHEAD TO THE RIGHT WESTERLY ON PAVED
 HU1806'ROAD FOR 1.05 MILES TO A PAVED ROAD RIGHT AND END OF
 HU1806'PAVEMENT.  CONTINUE AHEAD WEST ON SAND ROAD FOR 1.05 MILES TO
 HU1806'A T-ROAD JUNCTION.  TURN LEFT AND GO SOUTH ON PAVED ROAD FOR
 HU1806'0.3 MILE TO A CROSSROAD.  TURN RIGHT AND GO WEST ON PAVED ROAD
 HU1806'FOR 1.05 MILES TO A SIDE ROAD LEFT AND THE ENTRANCE TO COUNTY
 HU1806'DUMP ON THE RIGHT.  TURN RIGHT AND GO NORTH ON SAND ROAD THROUGH
 HU1806'THE DUMP FOR 03 MILE TO THE STATION ON THE LEFT.
 HU1806'
 HU1806'THE STATION MARKS ARE STANDARD DISKS STAMPED DUMP 1974.  THE
 HU1806'SURFACE DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE
 HU1806'MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 13 FEET
 HU1806'NORTHWEST OF THE CENTER OF A SAND ROAD, 10.5 FEET SOUTHWEST OF A
 HU1806'16-INCH PINE TREE, 6 FEET NORTHEAST OF AN 18-INCH PINE TREE AND
 HU1806'2.5 FEET SOUTHWEST OF A METAL WITNESS POST WITH SIGN.  THE
 HU1806'UNDERGROUND DISK IS SET IN THE TOP OF AN IRREGULAR MASS OF
 HU1806'CONCRETE 42 INCHES BELOW THE GROUND SURFACE.
 HU1806'
 HU1806'REFERENCE MARK 1, A STANDARD DISK STAMPED DUMP NO 1 1974, IS
 HU1806'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1806'IS FLUSH WITH THE GROUND SURFACE.  IT IS 47 FEET EAST OF THE
 HU1806'METAL WITNESS POST, 42 FEET SOUTH OF A 10-INCH PINE TREE AND 12
 HU1806'FEET SOUTHEAST OF THE CENTER OF A SAND ROAD.
 HU1806'
 HU1806'REFERENCE MARK 2, A STANDARD DISK STAMPED DUMP NO 2 1974, SET
 HU1806'IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1806'PROJECTS 6 INCHES ABOVE THE GROUND SURFACE.  IT IS 72 FEET SOUTH
 HU1806'OF THE METAL WITNESS POST, 61 FEET NORTHEAST OF A 14-INCH PINE
 HU1806'TREE AND 12 FEET EAST-SOUTHEAST OF THE CENTER OF THE SAND ROAD.
 HU1806'
 HU1806'HEIGHT OF LIGHT ABOVE STATION MARK 1.35 METERS.
 HU1806
 HU1806                          STATION RECOVERY (1974)
 HU1806
 HU1806'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 HU1806'RECOVERED IN GOOD CONDITION.
 HU1806
 HU1806                          STATION RECOVERY (1976)
 HU1806
 HU1806'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1806'ON 4-21-76 THE STATION MARK WAS RECOVERED AND FOUND IN GOOD
 HU1806'CONDITION.  A SEARCH WAS MADE FOR THE REFERENCE MARKS AND NO
 HU1806'EVIDENCE OF THEM WERE FOUND.
 HU1806'
 HU1806'THERE WAS NOT AN AZIMUTH MARK ESTABLISHED AT THIS STATION, NOR IS
 HU1806'THERE A SUITABLE PLACE TO SET ONE AT THIS DATE.
 HU1806'
 HU1806'THIS POINT WAS ESTABLISHED BY A TRAVERSE AND THE HURLEY C WAS AN
 HU1806'UNMARKED POINT IN 1974.  I OBSERVED A POLARIS AZ1 ON A NEW RM3
 HU1806'AT THIS DATE, TO ESTABLISH AN AZIMUTH TO LOCATE BOUNDARY MONUMENT
 HU1806'32 AND TO ASSIST IN A FURTHER SEARCH FOR THE OLD RMS.  AFTER A
 HU1806'THOROUGH SEARCH WAS MADE THE OLD REFERENCE MARK 1 WAS FOUND IN
 HU1806'THE PRONE POSITION ABOUT 6-INCHES BELOW THE SURFACE AND NO
 HU1806'EVIDENCE OF REFERENCE MARK 2 WAS FOUND.
 HU1806'
 HU1806'A COMPLETE NEW DESCRIPTION FOLLOWS.
 HU1806'
 HU1806'THE STATION IS LOCATED 4 MILES WEST OF DELMAR, 3-1/2 MILES NORTH
 HU1806'OF HEBRON, AND ON WORCESTER COUNTY DUMP PROPERTY.
 HU1806'
 HU1806'TO REACH FROM A POINT WHERE STATE HIGHWAY 54 CROSSES A RAILROAD IN
 HU1806'DELMAR, GO WEST ON STATE HIGHWAY 54 FOR 0.2 MILE TO A FORK.  KEEP
 HU1806'LEFT AND CONTINUE WEST ON A PAVED ROAD FOR 0.35 MILE TO A
 HU1806'FORK.  KEEP LEFT AND GO SOUTHWEST AND WEST ON WALLER ROAD FOR 3.6
 HU1806'MILES TO A GATE ON THE RIGHT AND THE ENTRANCE TO THE WORCESTER
 HU1806'COUNTY DUMP.  TURN RIGHT AND GO NORTH ON A DIRT ROAD FOR 0.3
 HU1806'MILE TO A FORK AND THE STATION ON THE LEFT.
 HU1806'
 HU1806'THE STATION MARK IS A STANDARD DISK STAMPED DUMP 1974, SET IN
 HU1806'THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH
 HU1806'THE SURFACE.  IT IS 13 FEET NORTHWEST OF THE CENTER OF THE ROAD,
 HU1806'10.5 FEET SOUTHWEST OF A 16-INCH PINE TREE, 6 FEET NORTHEAST OF
 HU1806'AN 18-INCH PINE TREE WITH A TRIANGULAR BLAZE AND 2.5 FEET
 HU1806'SOUTHWEST OF A WITNESS POST.  (NOTE 1B 7A)
 HU1806'
 HU1806'REFERENCE MARK 3 IS A STANDARD DISK STAMPED DUMP 1974 NO. 3 1976,
 HU1806'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS
 HU1806'FLUSH WITH THE SURFACE.  IT IS 100 FEET NORTH OF A WATER FILLED
 HU1806'GRAVEL PIT, 30 FEET WEST OF THE CENTER OF THE ROAD, 21 FEET NORTH
 HU1806'OF AN 8-INCH PINE TREE, AND 10 FEET SOUTH OF CENTER OF DIRT
 HU1806'EAST-WEST ROAD.
 HU1806'
 HU1806'THE MARYLAND-DELAWARE BOUNDARY MONUMENT 32 MAY BE USED FOR A
 HU1806'REFERENCE MARK, SEE DESCRIPTION THEREOF.
 HU1806'
 HU1806'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1806'3-1/2 MILES NORTH OF HEBRON.
 HU1806
 HU1806                          STATION RECOVERY (1977)
 HU1806
 HU1806'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HU1806'THE STATION MARK AND REFERENCE MARK THREE WERE RECOVERED AND FOUND
 HU1806'TO BE IN GOOD CONDITION.  THE MARYLAND-DELAWARE BOUNDARY MONUMENT
 HU1806'NUMBER 32 WAS RE-SET ON THE STATE LINE AT THIS DATE.  SEE
 HU1806'DESCRIPTION FOR BOUNDARY MONUMENT NUMBER 32.
 HU1806'
 HU1806'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1806'3-1/2 MILES NORTH OF HEBRON.
 HU1806
 HU1806                          STATION RECOVERY (1981)
 HU1806
 HU1806'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HU1806'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 HU1806'AS DESCRIBED.  THE DISTANCES AND DIRECTIONS TO ALL MARKS WERE WITHIN
 HU1806'CLOSE AGREEMENT WITH THE MOST RECENT INFORMATION.
 HU1806'A NEW MARYLAND-DELAWARE BOUNDARY MONUMENT WAS ESTABLISHED ON THIS DATE
 HU1806'AND THE FORMER MARYLAND-DELAWARE MONUMENT 32 1976 WAS REPLACED WITH A
 HU1806'HORIZONTAL CONTROL STATION, SEE DESCRIPTION THEREOF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5707 ***********************************************************************
 JV5707  DESIGNATION -  DUMP
 JV5707  PID         -  JV5707
 JV5707  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5707  COUNTRY     -  US
 JV5707  USGS QUAD   -  CURTIS BAY (2016)
 JV5707
 JV5707                         *CURRENT SURVEY CONTROL
 JV5707  ______________________________________________________________________
 JV5707* NAD 83(1991) POSITION- 39 14 53.02004(N) 076 35 54.16533(W)   ADJUSTED
 JV5707* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5707  ______________________________________________________________________
 JV5707  GEOID HEIGHT    -        -32.827 (meters)                     GEOID18
 JV5707  LAPLACE CORR    -         -4.92  (seconds)                    DEFLEC18
 JV5707  HORZ ORDER      -  THIRD
 JV5707
 JV5707.The horizontal coordinates were established by classical geodetic methods
 JV5707.and adjusted by the National Geodetic Survey in January 1992.
 JV5707
 JV5707.The orthometric height was scaled from a topographic map.
 JV5707
 JV5707.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5707.GEOID18 height accuracy estimate available here.
 JV5707
 JV5707.Click photographs - Photos may exist for this station.
 JV5707
 JV5707.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5707
 JV5707. The following values were computed from the NAD 83(1991) position.
 JV5707
 JV5707;                    North         East     Units Scale Factor Converg.
 JV5707;SPC MD       -   175,620.579   434,668.032   MT  0.99997091   +0 15 07.5
 JV5707;SPC MD       -   576,181.85  1,426,073.37   sFT  0.99997091   +0 15 07.5
 JV5707;UTM  18      - 4,345,522.136   362,074.507   MT  0.99983423   -1 00 41.1
 JV5707
 JV5707!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5707!SPC MD       -   1.00000503  x   0.99997091  =   0.99997594
 JV5707!UTM  18      -   1.00000503  x   0.99983423  =   0.99983926
 JV5707
 JV5707:                Primary Azimuth Mark                     Grid Az
 JV5707:SPC MD       -  WESTERN                                  351 55 19.8
 JV5707:UTM  18      -  WESTERN                                  353 11 08.4
 JV5707
 JV5707_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6207445522(NAD 83)
 JV5707
 JV5707|---------------------------------------------------------------------|
 JV5707| PID    Reference Object                     Distance      Geod. Az  |
 JV5707|                                                           dddmmss.s |
 JV5707| JV5537 PROCTOR AND GAMBLE CO TANK          APPROX. 3.0 KM 0093533.4 |
 JV5707| JV5476 BAUGHS CHEMICAL CO TANK             APPROX. 2.9 KM 0574827.0 |
 JV5707| JV5702 MARYLAND DRYDOCK CO TALL TANK       APPROX. 1.5 KM 1080223.0 |
 JV5707| CA9368 DUMP RM 1                            19.950 METERS 24152     |
 JV5707| JV5685 INCINERATOR PLANT S STACK           APPROX. 1.6 KM 2700939.8 |
 JV5707| JV5686 INCINERATOR PLANT N STACK           APPROX. 1.6 KM 2705040.8 |
 JV5707| JV5593 MARYLAND YACHT CLUB FLAGPOLE        APPROX. 1.6 KM 2962729.2 |
 JV5707| JV5594 FERRY BAR CHANNEL REAR RNG LT       APPROX. 1.7 KM 2980841.5 |
 JV5707| CA9369 DUMP RM 2                            16.037 METERS 29810     |
 JV5707| JV5566 FERRY BAR CHANNEL FRONT RNG LT      APPROX. 1.4 KM 3053836.7 |
 JV5707| JV5564 LOCKE TANK                          APPROX. 1.7 KM 3185503.5 |
 JV5707| JV5561 GAS AND ELECTRIC CO W STACK         APPROX. 2.0 KM 3475007.2 |
 JV5707| JV5562 GAS AND ELECTRIC CO E STACK         APPROX. 2.0 KM 3480405.1 |
 JV5707| JV5544 WESTERN                             APPROX. 2.0 KM 3521027.3 |
 JV5707| JV5547 CHESAPEAKE PAPER BOARD CO STK       APPROX. 2.4 KM 3561935.8 |
 JV5707|---------------------------------------------------------------------|
 JV5707
 JV5707                          SUPERSEDED SURVEY CONTROL
 JV5707
 JV5707  NAD 83(1986)-  39 14 53.01647(N)    076 35 54.17443(W) AD(       ) 3
 JV5707  NAD 27      -  39 14 52.63100(N)    076 35 55.29700(W) AD(       ) 3
 JV5707
 JV5707.Superseded values are not recommended for survey control.
 JV5707
 JV5707.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5707.See file dsdata.pdf to determine how the superseded data were derived.
 JV5707
 JV5707_MARKER: DS = TRIANGULATION STATION DISK
 JV5707_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5707_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5707+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2012
 JV5707
 JV5707  HISTORY     - Date     Condition        Report By
 JV5707  HISTORY     - 1934     MONUMENTED       CGS
 JV5707  HISTORY     - 1966     MARK NOT FOUND   USGS
 JV5707  HISTORY     - 20120316 GOOD             INDIV
 JV5707  HISTORY     - 20120920 POOR             INDIV
 JV5707
 JV5707                          STATION DESCRIPTION
 JV5707
 JV5707'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5707'THE STATION IS LOCATED ON THE S SHORE OF PATAPSCO RIVER ON A HIGH
 JV5707'KNOLL OF FILLED-IN LAND OPPOSITE THE WESTERN MARYLAND GRAIN
 JV5707'ELEVATOR.  IT IS LOCATED ON THE HIGHEST KNOLL ON THE NORTHERNMOST
 JV5707'POINT APPROXIMATELY 60 METERS BACK FROM THE HIGH-WATER MARK.  BOTH
 JV5707'TO THE E AND TO THE W ARE HUGE GRAVEL DEPOSITS EXTENDING OUT IN
 JV5707'THE RIVER, THE ONE TO THE E EXTENDING OUT IN THE RIVER ABOUT THE
 JV5707'SAME DISTANCE AS THE LAND ON WHICH THE STATION OCCUPIES.  F.S.
 JV5707'ROYSTER WATER TANK AND MARYLAND DRYDOCK COMPANY WATER TANK LINE
 JV5707'UP ON RANGE AT A DISTANCE OF 8 METERS N OF THE STATION.
 JV5707'
 JV5707'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5707'CONCRETE.
 JV5707
 JV5707                          STATION RECOVERY (1966)
 JV5707
 JV5707'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1966 (MKW)
 JV5707'STATION HAS BEEN DESTROYED.
 JV5707
 JV5707                          STATION RECOVERY (2012)
 JV5707
 JV5707'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2012 (DMS)
 JV5707'STATION RECOVERED IN GOOD CONDITION
 JV5707
 JV5707                          STATION RECOVERY (2012)
 JV5707
 JV5707'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2012 (DMS)
 JV5707'DISC HAS RECENTLY BEEN PURPOSEFULLY CHISELED OUT OF IT'S CONCRETE
 JV5707'COLUMN, IT WAS NOT FOUND IN THE VICINITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5602 ***********************************************************************
 JV5602  DESIGNATION -  DUN
 JV5602  PID         -  JV5602
 JV5602  STATE/COUNTY-  MD/BALTIMORE
 JV5602  COUNTRY     -  US
 JV5602  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5602
 JV5602                         *CURRENT SURVEY CONTROL
 JV5602  ______________________________________________________________________
 JV5602* NAD 83(1991) POSITION- 39 16 04.85979(N) 076 30 37.06166(W)   ADJUSTED
 JV5602* NAVD 88 ORTHO HEIGHT -    27.    (meters)       89.    (feet) SCALED
 JV5602  ______________________________________________________________________
 JV5602  GEOID HEIGHT    -        -32.965 (meters)                     GEOID18
 JV5602  LAPLACE CORR    -         -2.31  (seconds)                    DEFLEC18
 JV5602  HORZ ORDER      -  SECOND
 JV5602
 JV5602.The horizontal coordinates were established by classical geodetic methods
 JV5602.and adjusted by the National Geodetic Survey in January 1992.
 JV5602
 JV5602.The orthometric height was scaled from a topographic map.
 JV5602
 JV5602.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5602.GEOID18 height accuracy estimate available here.
 JV5602
 JV5602.Click photographs - Photos may exist for this station.
 JV5602
 JV5602.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5602
 JV5602. The following values were computed from the NAD 83(1991) position.
 JV5602
 JV5602;                    North         East     Units Scale Factor Converg.
 JV5602;SPC MD       -   177,873.071   442,259.552   MT  0.99997323   +0 18 26.5
 JV5602;SPC MD       -   583,571.90  1,450,979.88   sFT  0.99997323   +0 18 26.5
 JV5602;UTM  18      - 4,347,606.375   369,712.698   MT  0.99980901   -0 57 21.9
 JV5602
 JV5602!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5602!SPC MD       -   1.00000097  x   0.99997323  =   0.99997420
 JV5602!UTM  18      -   1.00000097  x   0.99980901  =   0.99980998
 JV5602
 JV5602:                Primary Azimuth Mark                     Grid Az
 JV5602:SPC MD       -  DUNDALK NATL DISTILLERS SM TK            241 47 50.7
 JV5602:UTM  18      -  DUNDALK NATL DISTILLERS SM TK            243 03 39.1
 JV5602
 JV5602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6971247606(NAD 83)
 JV5602
 JV5602|---------------------------------------------------------------------|
 JV5602| PID    Reference Object                     Distance      Geod. Az  |
 JV5602|                                                           dddmmss.s |
 JV5602| JV5482 BACK R CONSOL PWR CO GAS TANK       APPROX. 2.8 KM 0062556.5 |
 JV5602| JV5483 BALTIMORE CAPLAND GRAIN STACK       APPROX. 2.0 KM 0153500.1 |
 JV5602| CA9370 DUN RM 1                             17.645 METERS 21204     |
 JV5602| JV5595 DUNDALK NATL DISTILLERS SM TK       APPROX. 0.8 KM 2420617.2 |
 JV5602| JV5596 DUNDALK NATL DISTILLERS LGE TK      APPROX. 0.9 KM 2490028.1 |
 JV5602| CA9371 DUN RM 2                             23.802 METERS 28026     |
 JV5602|---------------------------------------------------------------------|
 JV5602
 JV5602                          SUPERSEDED SURVEY CONTROL
 JV5602
 JV5602  NAD 83(1986)-  39 16 04.85570(N)    076 30 37.07085(W) AD(       ) 2
 JV5602  NAD 27      -  39 16 04.46760(N)    076 30 38.20170(W) AD(       ) 2
 JV5602
 JV5602.Superseded values are not recommended for survey control.
 JV5602
 JV5602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5602.See file dsdata.pdf to determine how the superseded data were derived.
 JV5602
 JV5602_MARKER: DS = TRIANGULATION STATION DISK
 JV5602_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5602_STAMPING: DUN 1958
 JV5602_MARK LOGO: CGS
 JV5602_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5602+STABILITY: SURFACE MOTION
 JV5602_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5602+SATELLITE: SATELLITE OBSERVATIONS - May 18, 2013
 JV5602
 JV5602  HISTORY     - Date     Condition        Report By
 JV5602  HISTORY     - 1958     MONUMENTED       CGS
 JV5602  HISTORY     - 19950725 MARK NOT FOUND   USPSQD
 JV5602  HISTORY     - 20130518 GOOD             USPSQD
 JV5602
 JV5602                          STATION DESCRIPTION
 JV5602
 JV5602'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5602'STATION IS LOCATED ON PROPERTY OF DUNDALK HIGH SCHOOL, NEAR THE
 JV5602'NORTHEAST CORNER OF A CHAINLINK FENCE, WHICH IS ABOUT 1.0 MILE
 JV5602'EAST OF THE EDGE OF BALTIMORE.  STATION IS 13 FEET EAST OF
 JV5602'NORTHEAST CORNER POST OF CHAINLINK FENCE.  THE MARK IS A
 JV5602'STANDARD STATION DISK SET IN A 12X12 INCH CONCRETE MONUMENT,
 JV5602'FLUSH WITH THE GROUND AND THE DISK IS STAMPED DUN 1958.
 JV5602'
 JV5602'REFERENCE MARK NO. 1 IS 73 FEET SOUTH OF FENCE CORNER AND 1-1/2
 JV5602'FEET EAST OF FENCE.  THE MARK IS A STANDARD REFERENCE MARK DISK
 JV5602'SET IN A 12X12 INCH CONCRETE MONUMENT, PROJECTS 2 INCHES AND THE
 JV5602'DISK IS STAMPED DUN NO 1 1958.
 JV5602'
 JV5602'REFERENCE MARK NO. 2 IS 45 FEET WEST OF FENCE CORNER AND 1 FOOT
 JV5602'NORTH OF FENCE.  THE MARK IS A STANDARD DISK SET IN A 12X12 INCH
 JV5602'CONCRETE MONUMENT, FLUSH WITH THE GROUND AND THE DISK IS STAMPED
 JV5602'DUN NO 2 1958.
 JV5602'
 JV5602'NO SUITABLE PLACE WAS FOUND TO SET AN AZIMUTH MARK.  HOWEVER
 JV5602'ANY ONE OF THE THREE CHECKERED WATER TANKS VISIBLE FROM THE
 JV5602'GROUND MAY BE USED AS AZIMUTH MARK.
 JV5602'
 JV5602'TO REACH FROM THE INTERSECTION OF WISE AVENUE AND MARRITT
 JV5602'AVENUE, GO WESTERLY ON WISE AVENUE FOR 0.1 MILE TO TRAPPE ROAD
 JV5602'AND HOLABIRD AVENUE.  CONTINUE WESTERLY ON HOLABIRD AVENUE FOR
 JV5602'0.3 MILE TO BELLE AVENUE ON LEFT.  TURN LEFT AND GO SOUTHERLY ON
 JV5602'BELLE AVENUE FOR 0.1 MILE TO SCHOOL STREET.  CONTINUE SOUTHERLY
 JV5602'ON TRACK ROAD FOR 0.1 MILE TO CHAIN LINK FENCE.  TURN LEFT AND
 JV5602'GO EASTERLY ALONG FENCE FOR 0.05 MILE TO FENCE CORNER AND
 JV5602'STATION AS DESCRIBED.
 JV5602'
 JV5602'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV5602
 JV5602                          STATION RECOVERY (1995)
 JV5602
 JV5602'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5602'MARK NOT FOUND.
 JV5602
 JV5602                          STATION RECOVERY (2013)
 JV5602
 JV5602'RECOVERY NOTE BY US POWER SQUADRON 2013
 JV5602'NEW DIRECTIONS. FROM INTERSECTION OF WISE AVE. AND MERRITT BLVD.
 JV5602'PROCEED SW ON MERRITT BLVD. TO PENNINSULA EXPRESSWAY, TURN RIGHT AND
 JV5602'
 JV5602'CONTINUE TO SOLLERS POINT ROAD, TURN RIGHT AND GO TO THE TOP OF THE
 JV5602'HILL, TURN RIGHT AT THE ENTRANCE TO DUNDALK COMMUNITY COLLEGE. FOLLOW
 JV5602'
 JV5602'THE ROAD, IT TURNS 90 DEG. AND CONTINUES TO THE GYMNASIUM PARKING LOT.
 JV5602'
 JV5602'THE MARKER IS LOCATED 105 FT., 2 IN. NNE OF A 8 INCH DIAMETER STEEL
 JV5602'LAMP POST NEAR THE NE CORNER OF THE PARKING LOT, 54 INCHES NORTH OF A
 JV5602'
 JV5602'CURB. THE MARKER IS ALSO 19 IN. ON THE NORTH SIDE OF A TALL CHAIN LINK
 JV5602'
 JV5602'FENCE RUNNING PARALLEL TO THE PARKING ENTRY ROAD ABOUT 33 FT. OFF THE
 JV5602'
 JV5602'CENTER LINE ON THE NORTH SIDE. REF. MARKER NO. 2 WAS FOUND 19 IN. FROM
 JV5602'
 JV5602'THE SAME FENCE 57 FT. 9 IN. TO THE EAST. REF. MARKER NO. 1 WAS NOT
 JV5602'FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4646 ***********************************************************************
 AB4646  DESIGNATION -  DUNCAN
 AB4646  PID         -  AB4646
 AB4646  STATE/COUNTY-  MD/CARROLL
 AB4646  COUNTRY     -  US
 AB4646  USGS QUAD   -  TANEYTOWN (2016)
 AB4646
 AB4646                         *CURRENT SURVEY CONTROL
 AB4646  ______________________________________________________________________
 AB4646* NAD 83(2011) POSITION- 39 38 53.95782(N) 077 08 30.58860(W)   ADJUSTED
 AB4646* NAD 83(2011) ELLIP HT-   117.061 (meters)        (06/27/12)   ADJUSTED
 AB4646* NAD 83(2011) EPOCH   -  2010.00
 AB4646* NAVD 88 ORTHO HEIGHT -   149.848 (meters)      491.63  (feet) ADJUSTED
 AB4646  ______________________________________________________________________
 AB4646  GEOID HEIGHT    -        -32.838 (meters)                     GEOID18
 AB4646  NAD 83(2011) X  -  1,094,400.475 (meters)                     COMP
 AB4646  NAD 83(2011) Y  - -4,794,485.643 (meters)                     COMP
 AB4646  NAD 83(2011) Z  -  4,048,071.464 (meters)                     COMP
 AB4646  LAPLACE CORR    -          4.64  (seconds)                    DEFLEC18
 AB4646  DYNAMIC HEIGHT  -        149.769 (meters)      491.37  (feet) COMP
 AB4646  MODELED GRAVITY -    980,093.2   (mgal)                       NAVD 88
 AB4646
 AB4646  VERT ORDER      -  SECOND    CLASS II
 AB4646
 AB4646  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4646  Standards:
 AB4646         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4646            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4646  -------------------------------------------------------------------
 AB4646  NETWORK    1.28   2.72           0.59   0.39   1.39      0.42368995
 AB4646  -------------------------------------------------------------------
 AB4646  Click here for local accuracies and other accuracy information.
 AB4646
 AB4646.The horizontal coordinates were established by GPS observations
 AB4646.and adjusted by the National Geodetic Survey in June 2012.
 AB4646
 AB4646.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4646.been affixed to the stable North American tectonic plate. See 
 AB4646.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4646
 AB4646.The horizontal coordinates are valid at the epoch date displayed above
 AB4646.which is a decimal equivalence of Year/Month/Day.
 AB4646
 AB4646.The orthometric height was determined by differential leveling and
 AB4646.adjusted by the NATIONAL GEODETIC SURVEY
 AB4646.in June 2012.
 AB4646
 AB4646.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4646.GEOID18 height accuracy estimate available here.
 AB4646
 AB4646.Click photographs - Photos may exist for this station.
 AB4646
 AB4646.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4646
 AB4646.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4646
 AB4646.The ellipsoidal height was determined by GPS observations
 AB4646.and is referenced to NAD 83.
 AB4646
 AB4646.The dynamic height is computed by dividing the NAVD 88
 AB4646.geopotential number by the normal gravity value computed on the
 AB4646.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB4646.degrees latitude (g = 980.6199 gals.).
 AB4646
 AB4646.The modeled gravity was interpolated from observed gravity values.
 AB4646
 AB4646. The following values were computed from the NAD 83(2011) position.
 AB4646
 AB4646;                    North         East     Units Scale Factor Converg.
 AB4646;SPC MD       -   219,992.393   387,826.181   MT  1.00004072   -0 05 20.5
 AB4646;SPC MD       -   721,758.38  1,272,393.06   sFT  1.00004072   -0 05 20.5
 AB4646;UTM  18      - 4,390,917.772   316,231.535   MT  1.00001579   -1 22 01.3
 AB4646
 AB4646!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4646!SPC MD       -   0.99998164  x   1.00004072  =   1.00002235
 AB4646!UTM  18      -   0.99998164  x   1.00001579  =   0.99999742
 AB4646
 AB4646:                Primary Azimuth Mark                     Grid Az
 AB4646:SPC MD       -  SELLS                                    192 43 07.5
 AB4646:UTM  18      -  SELLS                                    193 59 48.3
 AB4646
 AB4646_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1623190917(NAD 83)
 AB4646
 AB4646|---------------------------------------------------------------------|
 AB4646| PID    Reference Object                     Distance      Geod. Az  |
 AB4646|                                                           dddmmss.s |
 AB4646| AB4678 SELLS                               APPROX. 0.6 KM 1923747.0 |
 AB4646|---------------------------------------------------------------------|
 AB4646
 AB4646                          SUPERSEDED SURVEY CONTROL
 AB4646
 AB4646  NAD 83(2007)-  39 38 53.95808(N)    077 08 30.58902(W) AD(2002.00) 0
 AB4646  ELLIP H (02/10/07)  117.070  (m)                       GP(2002.00)    
 AB4646  ELLIP H (08/30/02)  117.044  (m)                       GP(       ) 4 2
 AB4646  NAD 83(1991)-  39 38 53.95741(N)    077 08 30.58964(W) AD(       ) 1
 AB4646  ELLIP H (07/03/96)  117.000  (m)                       GP(       ) 1 1
 AB4646  NAVD 88 (11/26/01)  149.9    (m)  GEOID99  model used  GPS OBS        
 AB4646  NAVD 88 (07/03/96)  149.9    (m)  GEOID93  model used  GPS OBS        
 AB4646
 AB4646.Superseded values are not recommended for survey control.
 AB4646
 AB4646.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4646.See file dsdata.pdf to determine how the superseded data were derived.
 AB4646
 AB4646_MARKER: DD = SURVEY DISK
 AB4646_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4646_STAMPING: DUNCAN 1993
 AB4646_MARK LOGO: MD-013
 AB4646_PROJECTION: RECESSED 10 CENTIMETERS
 AB4646_MAGNETIC: N = NO MAGNETIC MATERIAL
 AB4646_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4646+STABILITY: SURFACE MOTION
 AB4646_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4646+SATELLITE: SATELLITE OBSERVATIONS - May 10, 2014
 AB4646
 AB4646  HISTORY     - Date     Condition        Report By
 AB4646  HISTORY     - 1995     MONUMENTED       MD-013
 AB4646  HISTORY     - 19970413 GOOD             DMW
 AB4646  HISTORY     - 19990320 GOOD             GEOMET
 AB4646  HISTORY     - 20080124 GOOD             MDSHA
 AB4646  HISTORY     - 20080901 GOOD             GEOCAC
 AB4646  HISTORY     - 20140510 GOOD             RODCON
 AB4646
 AB4646                          STATION DESCRIPTION
 AB4646
 AB4646'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4646'STATION IS LOCATED ABOUT 9.5 MI (15.3 KM) NORTHWEST OF WESTMINSTER AND
 AB4646'ABOUT 2 MI (3.2 KM) EAST OF TANEYTOWN. TO REACH STATION FROM THE
 AB4646'INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 194
 AB4646'(FRANCIS SCOTT KEY HIGHWAY) AT TANEYTOWN GO SOUTHEAST ON MD ROUTE 140
 AB4646'FOR 1.35 MI (2.17 KM) TO THE INTERSECTION WITH MD ROUTE 140 AND SELL
 AB4646'ROAD. TURN LEFT AND GO NORTHEAST ON SELL ROAD FOR 0.65 MI (1.05 KM) TO
 AB4646'A 90 DEGREE BEND IN THE ROAD TO THE LEFT AND THE STATION ON THE RIGHT.
 AB4646'STATION IS BETWEEN SELLS ROAD AND MD ROUTE 140 AND ABOUT 600 FT (182.9
 AB4646'M) SOUTH OF THE INTERSECTION OF SELLS ROAD WITH STUMPTOWN ROAD.
 AB4646'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AB4646'SET 0.3 FT (0.1 M) BELOW THE GROUND. IT IS 60 FT (18.3 M) NORTH OF THE
 AB4646'CENTERLINE OF MD ROUTE 140, 48.5 FT (14.8 M) SOUTH OF THE CENTERLINE
 AB4646'OF SELLS ROAD AND 29.6 FT (9.0 M) EAST OF POWER POLE NO.58919.
 AB4646
 AB4646                          STATION RECOVERY (1997)
 AB4646
 AB4646'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AB4646'RECOVERED AS DESCRIBED.
 AB4646
 AB4646                          STATION RECOVERY (1999)
 AB4646
 AB4646'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BB)
 AB4646'RECOVERY GOOD.  THIS STATION IS STAMPED 1993 NOT 1995.
 AB4646
 AB4646                          STATION RECOVERY (2008)
 AB4646
 AB4646'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 AB4646'RECOVERED AS DESCRIBED.
 AB4646
 AB4646                          STATION RECOVERY (2008)
 AB4646
 AB4646'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 AB4646'RECOVERED IN GOOD CONDITION.
 AB4646
 AB4646                          STATION RECOVERY (2014)
 AB4646
 AB4646'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AB4646'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5697 ***********************************************************************
 JV5697  DESIGNATION -  DUNDALK
 JV5697  PID         -  JV5697
 JV5697  STATE/COUNTY-  MD/BALTIMORE
 JV5697  COUNTRY     -  US
 JV5697  USGS QUAD   -  CURTIS BAY (2016)
 JV5697
 JV5697                         *CURRENT SURVEY CONTROL
 JV5697  ______________________________________________________________________
 JV5697* NAD 83(1991) POSITION- 39 14 58.58401(N) 076 31 33.58333(W)   ADJUSTED
 JV5697* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5697  ______________________________________________________________________
 JV5697  GEOID HEIGHT    -        -32.965 (meters)                     GEOID18
 JV5697  LAPLACE CORR    -         -2.44  (seconds)                    DEFLEC18
 JV5697  HORZ ORDER      -  THIRD
 JV5697
 JV5697.The horizontal coordinates were established by classical geodetic methods
 JV5697.and adjusted by the National Geodetic Survey in January 1992.
 JV5697
 JV5697.The orthometric height was scaled from a topographic map.
 JV5697
 JV5697.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5697.GEOID18 height accuracy estimate available here.
 JV5697
 JV5697.Click photographs - Photos may exist for this station.
 JV5697
 JV5697.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5697
 JV5697. The following values were computed from the NAD 83(1991) position.
 JV5697
 JV5697;                    North         East     Units Scale Factor Converg.
 JV5697;SPC MD       -   175,822.125   440,915.290   MT  0.99997108   +0 17 51.0
 JV5697;SPC MD       -   576,843.09  1,446,569.58   sFT  0.99997108   +0 17 51.0
 JV5697;UTM  18      - 4,345,585.889   368,323.770   MT  0.99981349   -0 57 56.3
 JV5697
 JV5697!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5697!SPC MD       -   1.00000474  x   0.99997108  =   0.99997582
 JV5697!UTM  18      -   1.00000474  x   0.99981349  =   0.99981823
 JV5697
 JV5697:                Primary Azimuth Mark                     Grid Az
 JV5697:SPC MD       -  F S ROYSTER 1915                         253 52 08.9
 JV5697:UTM  18      -  F S ROYSTER 1915                         255 07 56.2
 JV5697
 JV5697_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6832345585(NAD 83)
 JV5697
 JV5697|---------------------------------------------------------------------|
 JV5697| PID    Reference Object                     Distance      Geod. Az  |
 JV5697|                                                           dddmmss.s |
 JV5697| JV5726 F S ROYSTER 1915                    APPROX. 3.8 KM 2540959.9 |
 JV5697| CA9372 DUNDALK RM                           11.025 METERS 35747     |
 JV5697|---------------------------------------------------------------------|
 JV5697
 JV5697                          SUPERSEDED SURVEY CONTROL
 JV5697
 JV5697  NAD 83(1986)-  39 14 58.58008(N)    076 31 33.59266(W) AD(       ) 3
 JV5697  NAD 27      -  39 14 58.19000(N)    076 31 34.72700(W) AD(       ) 3
 JV5697  USSD        -  39 14 58.55200(N)    076 31 34.56000(W) AD(       ) 3
 JV5697
 JV5697.Superseded values are not recommended for survey control.
 JV5697
 JV5697.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5697.See file dsdata.pdf to determine how the superseded data were derived.
 JV5697
 JV5697_MARKER: DS = TRIANGULATION STATION DISK
 JV5697_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5697_MARK LOGO: CGS
 JV5697_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5697+STABILITY: SURFACE MOTION
 JV5697
 JV5697  HISTORY     - Date     Condition        Report By
 JV5697  HISTORY     - 1915     MONUMENTED       CGS
 JV5697  HISTORY     - 1924     GOOD             CGS
 JV5697  HISTORY     - 1930     GOOD             CGS
 JV5697  HISTORY     - 1934     MARK NOT FOUND   CGS
 JV5697  HISTORY     - 19950725 MARK NOT FOUND   USPSQD
 JV5697
 JV5697                          STATION DESCRIPTION
 JV5697
 JV5697'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5697'ON THE NE SHORE OF PATAPSCO RIVER, ABOUT 7/8 MILE SE OF POINT
 JV5697'BREEZE, ON THE PROPERTY OF BURNS AND RUSSELL COMPANY AND ABOUT
 JV5697'200 FEET N OF THE COMPANYS PIER.  STATION MARKED BY A STANDARD
 JV5697'BRONZE DISK STATION MARK SET IN CONCRETE MONUMENT, WITH TOP FLUSH
 JV5697'WITH GROUND.  A STANDARD DISK REFERENCE MARK WAS SET IN A
 JV5697'CONCRETE MONUMENT ON OPPOSITE SIDE OF SMALL ROADWAY FROM STATION.
 JV5697'IT IS 11.025 METERS (36.17 FEET) FROM THE STATION
 JV5697'N 2 DEG 12 MIN W.  A LOCUST TREE MARKED WITH A TRIANGLE OF
 JV5697'NAILS IN A BLAZE IS 6.1 METERS (20.0 FEET) W OF N FROM THE
 JV5697'STATION, AND A 2-INCH IRON PIPE ON W SIDE OF ROADWAY IS SE OF
 JV5697'THE STATION A DISTANCE OF 9.3 METERS (30.5 FEET).  RECOVERY OF
 JV5697'1924 GIVES ADDITONAL INFORMATION AS FOLLOWS--REFUSE FROM
 JV5697'BRICK PLANT COVERED THE STATION TO A DEPTH OF 2 FEET OR
 JV5697'MORE.  IT WAS DUG OUT AND WALLED IN BY BRICKWORK.  REFERENCE
 JV5697'MARK IN THE FRONT YARD OF ONE OF THE COTTAGES.  IN GOOD
 JV5697'CONDITION.  THE STATION IS 185.5 FEET FROM THE W CORNER OF THE
 JV5697'MOST WESTERLY BRICK KILN OF THE ABANDONED LOWER BRICK YARD OF
 JV5697'BURNS AND RUSSELL.
 JV5697
 JV5697                          STATION RECOVERY (1930)
 JV5697
 JV5697'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1930 (WHB)
 JV5697'THE STATION WAS FOUND WITH THE HELP OF THE RESIDENT ENGINEER OF
 JV5697'THE MUNICIPAL AIRPORT PROJECT.  WITNESS MARKS, BUILDINGS AND TREES,
 JV5697'HAVE BEEN RAZED IN THIS VICINITY IN THE CONSTRUCTION OF THE
 JV5697'AIRPORT.  WHEN THIS PROJECT IS COMPLETED THE STATION WILL BE 5
 JV5697'OR MORE FEET BELOW THE SURFACE OF THE GROUND.
 JV5697
 JV5697                          STATION RECOVERY (1934)
 JV5697
 JV5697'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5697'STATION DESTROYED BY FILL ACCORDING TO RESIDENT ENGINEER OF
 JV5697'AIRPORT PROJECT.
 JV5697
 JV5697                          STATION RECOVERY (1995)
 JV5697
 JV5697'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5697'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5596 ***********************************************************************
 JV5596  DESIGNATION -  DUNDALK NATL DISTILLERS LGE TK
 JV5596  PID         -  JV5596
 JV5596  STATE/COUNTY-  MD/BALTIMORE
 JV5596  COUNTRY     -  US
 JV5596  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5596
 JV5596                         *CURRENT SURVEY CONTROL
 JV5596  ______________________________________________________________________
 JV5596* NAD 83(1991) POSITION- 39 15 54.83246(N) 076 31 10.67475(W)   ADJUSTED
 JV5596  ______________________________________________________________________
 JV5596  GEOID HEIGHT    -        -32.956 (meters)                     GEOID18
 JV5596  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 JV5596  HORZ ORDER      -  THIRD
 JV5596
 JV5596.The horizontal coordinates were established by classical geodetic methods
 JV5596.and adjusted by the National Geodetic Survey in January 1992.
 JV5596
 JV5596.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5596.GEOID18 height accuracy estimate available here.
 JV5596
 JV5596.Click photographs - Photos may exist for this station.
 JV5596
 JV5596.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5596
 JV5596. The following values were computed from the NAD 83(1991) position.
 JV5596
 JV5596;                    North         East     Units Scale Factor Converg.
 JV5596;SPC MD       -   177,559.569   441,455.444   MT  0.99997290   +0 18 05.4
 JV5596;SPC MD       -   582,543.35  1,448,341.74   sFT  0.99997290   +0 18 05.4
 JV5596;UTM  18      - 4,347,310.727   368,902.005   MT  0.99981162   -0 57 42.9
 JV5596
 JV5596_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6890247310(NAD 83)
 JV5596
 JV5596                          SUPERSEDED SURVEY CONTROL
 JV5596
 JV5596  NAD 83(1986)-  39 15 54.82842(N)    076 31 10.68389(W) AD(       ) 3
 JV5596  NAD 27      -  39 15 54.44000(N)    076 31 11.81500(W) AD(       ) 3
 JV5596
 JV5596.Superseded values are not recommended for survey control.
 JV5596
 JV5596.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5596.See file dsdata.pdf to determine how the superseded data were derived.
 JV5596
 JV5596_MARKER: 51 = TANK
 JV5596
 JV5596  HISTORY     - Date     Condition        Report By
 JV5596  HISTORY     - 1958     FIRST OBSERVED   CGS
 JV5596  HISTORY     - 1975     GOOD             NGS
 JV5596  HISTORY     - 19940930 GOOD             USPSQD
 JV5596  HISTORY     - 19950725 GOOD             USPSQD
 JV5596  HISTORY     - 20050404 GOOD             GEOCAC
 JV5596
 JV5596                          STATION DESCRIPTION
 JV5596
 JV5596'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5596'STATION IS LOCATED AT THE DUNDALK NATIONAL DISTILLERS PLANT ABOUT
 JV5596'1.0 MILE SOUTHEAST OF THE INTERSECTION OF WILLOW SPRINGS ROAD
 JV5596'AND CROSSWAY ROAD.  STATION IS OF STEEL CONSTRUCTION ABOUT
 JV5596'150 FEET HIGH, PAINTED RED AND WHITE CHECKED.
 JV5596'
 JV5596'THE POINT INTERSECTED WAS THE RED LIGHT ATOP TANK.
 JV5596
 JV5596                          STATION RECOVERY (1975)
 JV5596
 JV5596'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5596'STATION RECOVERED AS DESCRIBED.
 JV5596
 JV5596                          STATION RECOVERY (1994)
 JV5596
 JV5596'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5596'RECOVERED IN GOOD CONDITION.
 JV5596
 JV5596                          STATION RECOVERY (1995)
 JV5596
 JV5596'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5596'RECOVERED IN GOOD CONDITION.
 JV5596
 JV5596                          STATION RECOVERY (2005)
 JV5596
 JV5596'RECOVERY NOTE BY GEOCACHING 2005 (CGP)
 JV5596'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5597 ***********************************************************************
 JV5597  DESIGNATION -  DUNDALK NATL DISTILL PROD STK
 JV5597  PID         -  JV5597
 JV5597  STATE/COUNTY-  MD/BALTIMORE
 JV5597  COUNTRY     -  US
 JV5597  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5597
 JV5597                         *CURRENT SURVEY CONTROL
 JV5597  ______________________________________________________________________
 JV5597* NAD 83(1991) POSITION- 39 15 54.28990(N) 076 31 09.16107(W)   ADJUSTED
 JV5597  ______________________________________________________________________
 JV5597  GEOID HEIGHT    -        -32.957 (meters)                     GEOID18
 JV5597  LAPLACE CORR    -         -2.45  (seconds)                    DEFLEC18
 JV5597  HORZ ORDER      -  THIRD
 JV5597
 JV5597.The horizontal coordinates were established by classical geodetic methods
 JV5597.and adjusted by the National Geodetic Survey in January 1992.
 JV5597
 JV5597.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5597.GEOID18 height accuracy estimate available here.
 JV5597
 JV5597.Click photographs - Photos may exist for this station.
 JV5597
 JV5597.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5597
 JV5597. The following values were computed from the NAD 83(1991) position.
 JV5597
 JV5597;                    North         East     Units Scale Factor Converg.
 JV5597;SPC MD       -   177,543.029   441,491.818   MT  0.99997288   +0 18 06.3
 JV5597;SPC MD       -   582,489.09  1,448,461.07   sFT  0.99997288   +0 18 06.3
 JV5597;UTM  18      - 4,347,293.392   368,937.999   MT  0.99981150   -0 57 42.0
 JV5597
 JV5597_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6893747293(NAD 83)
 JV5597
 JV5597                          SUPERSEDED SURVEY CONTROL
 JV5597
 JV5597  NAD 83(1986)-  39 15 54.28590(N)    076 31 09.17010(W) AD(       ) 3
 JV5597  NAD 27      -  39 15 53.89000(N)    076 31 10.31000(W) AD(       ) 3
 JV5597
 JV5597.Superseded values are not recommended for survey control.
 JV5597
 JV5597.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5597.See file dsdata.pdf to determine how the superseded data were derived.
 JV5597
 JV5597_MARKER: 63 = STACK
 JV5597
 JV5597  HISTORY     - Date     Condition        Report By
 JV5597  HISTORY     - 1952     FIRST OBSERVED   CGS
 JV5597  HISTORY     - 1975     GOOD             NGS
 JV5597  HISTORY     - 19940930 GOOD             USPSQD
 JV5597  HISTORY     - 19950725 GOOD             USPSQD
 JV5597
 JV5597                          STATION DESCRIPTION
 JV5597
 JV5597'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (HAP)
 JV5597'IN DUNDALK, S OF SOLLERS POINT ROAD, ON THE PROPERTY OF THE
 JV5597'NATIONAL DISTILLERS PRODUCTS CORPORATION, A RED BRICK STACK,
 JV5597'160 FEET HIGH.
 JV5597
 JV5597                          STATION RECOVERY (1975)
 JV5597
 JV5597'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5597'STATION IS AS DESCRIBED EXCEPT THE WORDS BALTIMORE PURE RYE ARE
 JV5597'WRITTEN ON THE SIDE IN WHITE BRICK.
 JV5597
 JV5597                          STATION RECOVERY (1994)
 JV5597
 JV5597'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5597'RECOVERED IN GOOD CONDITION.
 JV5597
 JV5597                          STATION RECOVERY (1995)
 JV5597
 JV5597'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5597'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6957 ***********************************************************************
 HV6957  DESIGNATION -  DUNE MSFC 1908
 HV6957  PID         -  HV6957
 HV6957  STATE/COUNTY-  MD/ST MARYS
 HV6957  COUNTRY     -  US
 HV6957  USGS QUAD   -  SAINT CLEMENTS ISLAND (2016)
 HV6957
 HV6957                         *CURRENT SURVEY CONTROL
 HV6957  ______________________________________________________________________
 HV6957* NAD 83(1993) POSITION- 38 14 28.50073(N) 076 41 11.67494(W)   ADJUSTED
 HV6957* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6957  ______________________________________________________________________
 HV6957  GEOID HEIGHT    -        -33.831 (meters)                     GEOID18
 HV6957  LAPLACE CORR    -         -3.83  (seconds)                    DEFLEC18
 HV6957  HORZ ORDER      -  THIRD
 HV6957
 HV6957.The horizontal coordinates were established by classical geodetic methods
 HV6957.and adjusted by the National Geodetic Survey in November 1994.
 HV6957
 HV6957.The orthometric height was scaled from a topographic map.
 HV6957
 HV6957.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6957.GEOID18 height accuracy estimate available here.
 HV6957
 HV6957.Click photographs - Photos may exist for this station.
 HV6957
 HV6957.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6957
 HV6957. The following values were computed from the NAD 83(1993) position.
 HV6957
 HV6957;                    North         East     Units Scale Factor Converg.
 HV6957;SPC MD       -    63,828.602   427,438.581   MT  1.00001074   +0 11 48.2
 HV6957;SPC MD       -   209,411.01  1,402,354.74   sFT  1.00001074   +0 11 48.2
 HV6957;SPC VA N     - 2,065,345.341 3,658,739.140   MT  0.99996982   +1 07 54.4
 HV6957;SPC VA N     - 6,776,053.84 12,003,713.33   sFT  0.99996982   +1 07 54.4
 HV6957;UTM  18      - 4,233,927.619   352,404.479   MT  0.99986829   -1 02 38.9
 HV6957
 HV6957!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6957!SPC MD       -   1.00000519  x   1.00001074  =   1.00001593
 HV6957!SPC VA N     -   1.00000519  x   0.99996982  =   0.99997501
 HV6957!UTM  18      -   1.00000519  x   0.99986829  =   0.99987348
 HV6957
 HV6957:                Primary Azimuth Mark                     Grid Az
 HV6957:SPC MD       -  FENCE                                    046 02 58.6
 HV6957:SPC VA N     -  FENCE                                    045 06 52.4
 HV6957:UTM  18      -  FENCE                                    047 17 25.7
 HV6957
 HV6957_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5240433927(NAD 83)
 HV6957
 HV6957|---------------------------------------------------------------------|
 HV6957| PID    Reference Object                     Distance      Geod. Az  |
 HV6957|                                                           dddmmss.s |
 HV6957| HV6956 FENCE                               422.269 METERS 0461446.8 |
 HV6957| HV6962 GROVE                               171.952 METERS 20645     |
 HV6957|---------------------------------------------------------------------|
 HV6957
 HV6957                          SUPERSEDED SURVEY CONTROL
 HV6957
 HV6957  NAD 83(1991)-  38 14 28.49948(N)    076 41 11.67971(W) AD(       ) 3
 HV6957  NAD 83(1986)-  38 14 28.50053(N)    076 41 11.69131(W) AD(       ) 3
 HV6957  NAD 27      -  38 14 28.02700(N)    076 41 12.80700(W) AD(       ) 3
 HV6957  USSD        -  38 14 28.61500(N)    076 41 12.73100(W) AD(       ) 3
 HV6957
 HV6957.Superseded values are not recommended for survey control.
 HV6957
 HV6957.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6957.See file dsdata.pdf to determine how the superseded data were derived.
 HV6957
 HV6957_MARKER: H = DRILL HOLE
 HV6957_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6957_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6957+STABILITY: SURFACE MOTION
 HV6957
 HV6957  HISTORY     - Date     Condition        Report By
 HV6957  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6957  HISTORY     - 1927     MARK NOT FOUND   CGS
 HV6957  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6957
 HV6957                          STATION DESCRIPTION
 HV6957
 HV6957'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6957'ON THE EASTERN SHORE OF BRETONS BAY, ABOUT 5/8 MILE N OF HIGGINS
 HV6957'POINT, AND 1-1/8 MILES NW OF KAYWOOD POINT, ON A SANDED GRASSY
 HV6957'KNOLL, ABOUT 4 FEET ABOVE HIGH WATER, 4 YARDS SE OF EDGE OF BANK,
 HV6957'8 YARDS NW OF FOOT OF SAND SLOPE, 20 YARDS NE OF FIRST TREE IN
 HV6957'SCANT WOODS, 25 YARDS NW OF EDGE OF WOODS, 55 YARDS WSW OF A LARGE
 HV6957'PINE TREE AT POINT OF WOODS, AND 75 YARDS ENE OF A MUD HOLE.
 HV6957'STATION MARK IS CENTER OF STANDARD MONUMENT OF MARYLAND SHELL FISH
 HV6957'SURVEY, WHICH IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES
 HV6957'SQUARE AT THE TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME
 HV6957'MOLD AND SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH
 HV6957'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HV6957'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE CENTER
 HV6957'HOLE IS ALWAYS AT THE CENTER OF THE MONUMENT AND IF THE MARKING
 HV6957'HAS BEEN BROKEN OFF WITH DISTURBING THE BOTTOM, THE CENTER OF THE
 HV6957'SQUARE SECTION MAY BE USED AS THE LOCATION OF THE STATION.  THE
 HV6957'MONUMENT IS SET VERTICALLY IN THE GROUND, WITH TOP PROJECTING
 HV6957'ABOUT 3 TO 5 INCHES ABOVE THE SURFACE.  DISTANCES AND BEARINGS
 HV6957'FROM STATION TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN
 HV6957'BLAZE IN 11-INCH OAK TREE, 16.78 METERS (55.0 FEET), S 35 DEG 52
 HV6957'MIN W.  CHIMNEY OF HOUSE, 3/4 MILE, S 82 DEG 25 MIN W.  RIGHT
 HV6957'TANGENT OF RIGHT CHIMNEY OF PRIESTS HOUSE, 1-1/4 MILES, N 35 DEG
 HV6957'59 MIN W.  RIGHT PEAK OF ROOF OF RAILWAY BUILDING, 1-1/2 MILES, N
 HV6957'12 DEG 15 MIN W.  RIGHT PEAK OF ROOF BETWEEN TWO CHIMNEYS OF
 HV6957'HOUSE, 1-3/8 MILES, N 0 DEG 42 MIN E.  NAIL IN BLAZE IN 12-INCH
 HV6957'PINE TREE, 47.76 METERS (156.7 FEET) N 63 DEG 40 MIN E.  NAIL IN
 HV6957'BLAZE IN 6-INCH OAK TREE, 19.77 METERS (64.9 FEET), S 60 DEG 22 MIN E.
 HV6957
 HV6957                          STATION RECOVERY (1927)
 HV6957
 HV6957'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1927 (HRE)
 HV6957'STATION AND REFERENCE MARKS HAVE BEEN WASHED OUT.
 HV6957
 HV6957                          STATION RECOVERY (1958)
 HV6957
 HV6957'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6957'DUE TO THE LOSS OF ALL LOCAL REFERENCES THE STATION COULD NOT BE
 HV6957'RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4173 ***********************************************************************
 JV4173  DESIGNATION -  DUNKARD
 JV4173  PID         -  JV4173
 JV4173  STATE/COUNTY-  MD/CARROLL
 JV4173  COUNTRY     -  US
 JV4173  USGS QUAD   -  NEW WINDSOR (2016)
 JV4173
 JV4173                         *CURRENT SURVEY CONTROL
 JV4173  ______________________________________________________________________
 JV4173* NAD 83(1991) POSITION- 39 36 25.22805(N) 077 01 16.33715(W)   ADJUSTED
 JV4173* NAVD 88 ORTHO HEIGHT -   275.    (meters)      902.    (feet) SCALED
 JV4173  ______________________________________________________________________
 JV4173  GEOID HEIGHT    -        -32.388 (meters)                     GEOID18
 JV4173  LAPLACE CORR    -          4.29  (seconds)                    DEFLEC18
 JV4173  HORZ ORDER      -  FIRST
 JV4173
 JV4173.The horizontal coordinates were established by classical geodetic methods
 JV4173.and adjusted by the National Geodetic Survey in January 1992.
 JV4173
 JV4173.The orthometric height was scaled from a topographic map.
 JV4173
 JV4173.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4173.GEOID18 height accuracy estimate available here.
 JV4173
 JV4173.Click photographs - Photos may exist for this station.
 JV4173
 JV4173.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4173
 JV4173. The following values were computed from the NAD 83(1991) position.
 JV4173
 JV4173;                    North         East     Units Scale Factor Converg.
 JV4173;SPC MD       -   215,396.012   398,178.849   MT  1.00003124   -0 00 47.9
 JV4173;SPC MD       -   706,678.42  1,306,358.44   sFT  1.00003124   -0 00 47.9
 JV4173;SPC PA S     -    30,646.049   662,593.422   MT  1.00006704   +0 28 22.2
 JV4173;SPC PA S     -   100,544.58  2,173,858.59   sFT  1.00006704   +0 28 22.2
 JV4173;UTM  18      - 4,386,092.061   326,478.775   MT  0.99997071   -1 17 20.0
 JV4173
 JV4173!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4173!SPC MD       -   0.99996197  x   1.00003124  =   0.99999321
 JV4173!SPC PA S     -   0.99996197  x   1.00006704  =   1.00002901
 JV4173!UTM  18      -   0.99996197  x   0.99997071  =   0.99993268
 JV4173
 JV4173:                Primary Azimuth Mark                     Grid Az
 JV4173:SPC MD       -  DUNKARD AZ MK                            002 44 12.4
 JV4173:SPC PA S     -  DUNKARD AZ MK                            002 15 02.3
 JV4173:UTM  18      -  DUNKARD AZ MK                            004 00 44.5
 JV4173
 JV4173_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2647886092(NAD 83)
 JV4173
 JV4173|---------------------------------------------------------------------|
 JV4173| PID    Reference Object                     Distance      Geod. Az  |
 JV4173|                                                           dddmmss.s |
 JV4173| CJ9705 DUNKARD AZ MK                                      0024324.5 |
 JV4173| JV4171 WESTMINSTER W MD MEN DORM CUP       APPROX. 3.0 KM 1443619.2 |
 JV4173| JV4172 WESTMINSTER SPIRE                   APPROX. 3.2 KM 1492212.1 |
 JV4173| CJ9706 DUNKARD RM 1                         23.357 METERS 19136     |
 JV4173| CJ9707 DUNKARD RM 2                         51.322 METERS 23738     |
 JV4173|---------------------------------------------------------------------|
 JV4173
 JV4173                          SUPERSEDED SURVEY CONTROL
 JV4173
 JV4173  NAD 83(1986)-  39 36 25.22566(N)    077 01 16.34162(W) AD(       ) 1
 JV4173  NAD 27      -  39 36 24.85200(N)    077 01 17.41300(W) AD(       ) 1
 JV4173
 JV4173.Superseded values are not recommended for survey control.
 JV4173
 JV4173.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4173.See file dsdata.pdf to determine how the superseded data were derived.
 JV4173
 JV4173_MARKER: DS = TRIANGULATION STATION DISK
 JV4173_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4173_STAMPING: DUNKARD 1939
 JV4173_MARK LOGO: CGS
 JV4173_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4173+STABILITY: SURFACE MOTION
 JV4173
 JV4173  HISTORY     - Date     Condition        Report By
 JV4173  HISTORY     - 1939     MONUMENTED       CGS
 JV4173  HISTORY     - 1975     GOOD             NGS
 JV4173
 JV4173                          STATION DESCRIPTION
 JV4173
 JV4173'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4173'STATION IS BY AIRLINE ABOUT 2.5 MILES NW OF WESTMINSTER, 5.5 MILES
 JV4173'S OF UNION MILLS, 1.3 MILES NE OF STATE HIGHWAY 32, ON THE
 JV4173'PROPERTY OF MR. F.H. GARNER OF WESTMINSTER.  MARK IS SET ON THE
 JV4173'SE EDGE OF A CLEARED FIELD ON THE TOP OF THE HIGHEST TIMBERED
 JV4173'HILL IN THE VICINITY.  IT IS 19.5 FEET NW OF A 10-INCH
 JV4173'TRIANGULAR-BLAZED OAK TREE, WHICH IS STANDING ON THE SE EDGE OF
 JV4173'THE CLEARING, 5 FEET NW OF THE CENTER OF A TRAIL ROAD AND ABOUT
 JV4173'100 FEET E OF THE SE CORNER OF THE CLEARING.  MARK PROTRUDES
 JV4173'ABOUT 3 INCHES ABOVE THE GROUND.
 JV4173'
 JV4173'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV4173'BRONZE DISKS, SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND
 JV4173'11A.
 JV4173'
 JV4173'REFERENCE MARK NO.1 IS SSW OF THE STATION IN THE EDGE OF THE
 JV4173'CLEARING 5 FEET SE OF THE CENTER OF THE TRAIL ROAD AND 30 FEET E
 JV4173'OF THE SW CORNER OF THE CLEARING.  MARK PROTRUDES ABOUT 3 INCHES.
 JV4173'
 JV4173'REFERENCE MARK NO.2 IS WSW OF THE STATION ON THE W EDGE OF THE
 JV4173'CLEARING, 30 FEET N OF THE CENTER OF THE TRAIL ROAD AND ABOUT
 JV4173'100 FEET N OF THE SE CORNER OF THE CLEARING.  MARK PROTRUDES
 JV4173'ABOUT 3 INCHES.
 JV4173'
 JV4173'AZIMUTH MARK IS ABOUT 0.2 MILE N OF THE STATION IN THE NE CORNER
 JV4173'OF THE CLEARING ABOUT 12 FEET E OF THE CENTER OF THE TRAIL ROAD.
 JV4173'
 JV4173'STATION IS REACHED FROM THE INTERSECTION OF STATE HIGHWAYS 32
 JV4173'AND 31 AT THE NW EDGE OF WESTMINSTER BY GOING NW ON HIGHWAY 32
 JV4173'FOR 2.0 MILES TO A MACADAM ROAD TO THE RIGHT, THENCE RIGHT ON
 JV4173'MACADAM ROAD FOR 0.5 MILE TO A DIRT ROAD TO THE RIGHT, WHICH IS
 JV4173'ABOUT 50 YARDS BEYOND THE TOP OF A HILL, THENCE RIGHT ON DIRT
 JV4173'ROAD, 0.5 MILE TO A FORK, THENCE RIGHT FORK 0.1 MILE TO SOME
 JV4173'FARM BUILDINGS ON THE RIGHT, THENCE BEAR LEFT AND CONTINUE 0.05
 JV4173'MILE TO A FORK, THENCE RIGHT FORK UP THROUGH TIMBER FOR 0.25
 JV4173'MILE TO HIGHEST POINT AND STATION.
 JV4173'
 JV4173'TO REACH AZIMUTH FROM THE STATION CONTINUE ON TRAIL ROAD AROUND
 JV4173'THE EDGE OF THE CLEARING TO THE NE CORNER AND THE MARK ON THE
 JV4173'RIGHT OF THE TRAIL.
 JV4173'
 JV4173'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV4173
 JV4173                          STATION RECOVERY (1975)
 JV4173
 JV4173'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV4173'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV4173'CONDITION AS DESCRIBED IN THE PREVIOUS DESCRIPTION.
 JV4173'
 JV4173'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4173'2-1/2 MILES NORTHWEST OF WESTMINSTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6643 ***********************************************************************
 HV6643  DESIGNATION -  DUNNOCK
 HV6643  PID         -  HV6643
 HV6643  STATE/COUNTY-  MD/DORCHESTER
 HV6643  COUNTRY     -  US
 HV6643  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV6643
 HV6643                         *CURRENT SURVEY CONTROL
 HV6643  ______________________________________________________________________
 HV6643* NAD 83(1991) POSITION- 38 23 18.60924(N) 076 16 59.41620(W)   ADJUSTED
 HV6643* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6643  ______________________________________________________________________
 HV6643  GEOID HEIGHT    -        -34.784 (meters)                     GEOID18
 HV6643  LAPLACE CORR    -         -6.57  (seconds)                    DEFLEC18
 HV6643  HORZ ORDER      -  THIRD
 HV6643
 HV6643.The horizontal coordinates were established by classical geodetic methods
 HV6643.and adjusted by the National Geodetic Survey in January 1992.
 HV6643
 HV6643.The orthometric height was scaled from a topographic map.
 HV6643
 HV6643.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6643.GEOID18 height accuracy estimate available here.
 HV6643
 HV6643.Click photographs - Photos may exist for this station.
 HV6643
 HV6643.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6643
 HV6643. The following values were computed from the NAD 83(1991) position.
 HV6643
 HV6643;                    North         East     Units Scale Factor Converg.
 HV6643;SPC MD       -    80,372.714   462,625.704   MT  0.99998578   +0 26 59.7
 HV6643;SPC MD       -   263,689.48  1,517,797.83   sFT  0.99998578   +0 26 59.7
 HV6643;UTM  18      - 4,249,700.952   387,935.766   MT  0.99975466   -0 47 48.9
 HV6643
 HV6643!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6643!SPC MD       -   1.00000550  x   0.99998578  =   0.99999128
 HV6643!UTM  18      -   1.00000550  x   0.99975466  =   0.99976015
 HV6643
 HV6643:                Primary Azimuth Mark                     Grid Az
 HV6643:SPC MD       -  CEDAR POINT LIGHTHOUSE                   216 20 28.0
 HV6643:UTM  18      -  CEDAR POINT LIGHTHOUSE                   217 35 16.6
 HV6643
 HV6643_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8793549700(NAD 83)
 HV6643
 HV6643|---------------------------------------------------------------------|
 HV6643| PID    Reference Object                     Distance      Geod. Az  |
 HV6643|                                                           dddmmss.s |
 HV6643| CX2716 DUNNOCK RM                           35.180 METERS 08814     |
 HV6643| HV6661 CEDAR POINT LIGHTHOUSE              APPROX.12.3 KM 2164727.7 |
 HV6643|---------------------------------------------------------------------|
 HV6643
 HV6643                          SUPERSEDED SURVEY CONTROL
 HV6643
 HV6643  NAD 83(1986)-  38 23 18.60858(N)    076 16 59.43229(W) AD(       ) 3
 HV6643  NAD 27      -  38 23 18.16400(N)    076 17 00.63900(W) AD(       ) 3
 HV6643  USSD        -  38 23 18.54500(N)    076 17 00.39900(W) AD(       ) 3
 HV6643
 HV6643.Superseded values are not recommended for survey control.
 HV6643
 HV6643.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6643.See file dsdata.pdf to determine how the superseded data were derived.
 HV6643
 HV6643_MARKER: Z = SEE DESCRIPTION
 HV6643_SETTING: 0 = UNSPECIFIED SETTING
 HV6643
 HV6643  HISTORY     - Date     Condition        Report By
 HV6643  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6643  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6643
 HV6643                          STATION DESCRIPTION
 HV6643
 HV6643'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6643'STATION IS ON THE EASTERN SHORE OF CHESAPEAKE BAY, ABOUT 2-7/8
 HV6643'MILES N-NW OF THE N END OF BARREN ISLAND, ON A MARSH ABOUT 1 FOOT
 HV6643'ABOVE HIGH WATER, 70 YARDS FROM SHORE IN LINE WITH CEDAR POINT
 HV6643'LIGHT, 108 YARDS FROM SHORE IN LINE WITH COVE POINT LIGHT, AND
 HV6643'250 YARDS FROM A CLUMP OF WOODS KNOWN LOCALLY AS CATTLE ISLAND
 HV6643'WOODS.  STATION MARK IS THE CENTER OF A 2-INCH TILE PROJECTING 4
 HV6643'INCHES ABOVE THE SURFACE OF THE GROUND.  THE SUBSURFACE MARK IS
 HV6643'THE CENTER OF A 2-INCH TILE PIPE WITH TOP 2 INCHES BELOW BASE
 HV6643'OF SURFACE PIPE.  REFERENCE MARK IS MARKED BY A HOLE IN THE
 HV6643'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6643'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV6643'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6643'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS NEARLY IN LINE
 HV6643'WITH COVE POINT LIGHT, BEING 35.18 METERS (115.4 FEET) FROM
 HV6643'THE STATION N 88 DEG 14 MIN E.  OTHER DISTANCES AND
 HV6643'BEARINGS ARE AS FOLLOWS--NEAR PEAK OF BARN, 1/2 MILE, N 25 DEG
 HV6643'26 MIN E.  CHIMNEY OF HOUSE, 1/2 MILE, N 29 DEG 21 MIN E.  PEAK OF
 HV6643'BARN, 1-1/4 MILES, S 82 DEG 05 MIN E.  CHIMNEY OF HOUSE, 1-1/2 MILES,
 HV6643'S 66 DEG 53 MIN E.
 HV6643
 HV6643                          STATION RECOVERY (1942)
 HV6643
 HV6643'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6643'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE HOUR,
 HV6643'BUT NO TRACE OF IT COULD BE FOUND.  IT IS RECOMMENDED THAT THIS
 HV6643'STATION BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6108 ***********************************************************************
 HV6108  DESIGNATION -  DUPOINT
 HV6108  PID         -  HV6108
 HV6108  STATE/COUNTY-  MD/DORCHESTER
 HV6108  COUNTRY     -  US
 HV6108  USGS QUAD   -  TILGHMAN (2016)
 HV6108
 HV6108                         *CURRENT SURVEY CONTROL
 HV6108  ______________________________________________________________________
 HV6108* NAD 83(1991) POSITION- 38 37 49.32537(N) 076 17 23.66006(W)   ADJUSTED
 HV6108* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6108  ______________________________________________________________________
 HV6108  GEOID HEIGHT    -        -34.452 (meters)                     GEOID18
 HV6108  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 HV6108  HORZ ORDER      -  FIRST
 HV6108
 HV6108.The horizontal coordinates were established by classical geodetic methods
 HV6108.and adjusted by the National Geodetic Survey in January 1992.
 HV6108
 HV6108.The orthometric height was scaled from a topographic map.
 HV6108
 HV6108.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6108.GEOID18 height accuracy estimate available here.
 HV6108
 HV6108.Click photographs - Photos may exist for this station.
 HV6108
 HV6108.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6108
 HV6108. The following values were computed from the NAD 83(1991) position.
 HV6108
 HV6108;                    North         East     Units Scale Factor Converg.
 HV6108;SPC MD       -   107,215.088   461,828.530   MT  0.99995897   +0 26 44.4
 HV6108;SPC MD       -   351,754.83  1,515,182.44   sFT  0.99995897   +0 26 44.4
 HV6108;UTM  18      - 4,276,548.525   387,723.890   MT  0.99975523   -0 48 19.3
 HV6108
 HV6108!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6108!SPC MD       -   1.00000529  x   0.99995897  =   0.99996426
 HV6108!UTM  18      -   1.00000529  x   0.99975523  =   0.99976051
 HV6108
 HV6108:                Primary Azimuth Mark                     Grid Az
 HV6108:SPC MD       -  DUPOINT RM 2                             148 04 29.8
 HV6108:UTM  18      -  DUPOINT RM 2                             149 19 33.5
 HV6108
 HV6108_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8772376548(NAD 83)
 HV6108
 HV6108|---------------------------------------------------------------------|
 HV6108| PID    Reference Object                     Distance      Geod. Az  |
 HV6108|                                                           dddmmss.s |
 HV6108| CX2717 DUPOINT RM 1                         24.714 METERS 03156     |
 HV6108| HV6056 CHOPTANK RIVER LIGHTHOUSE           APPROX. 9.6 KM 0725440.2 |
 HV6108| CX2718 DUPOINT RM 2                                       1483114.2 |
 HV6108| CX2719 DUPOINT RM 3                         24.257 METERS 26816     |
 HV6108|---------------------------------------------------------------------|
 HV6108
 HV6108                          SUPERSEDED SURVEY CONTROL
 HV6108
 HV6108  NAD 83(1986)-  38 37 49.32327(N)    076 17 23.67486(W) AD(       ) 1
 HV6108  NAD 27      -  38 37 48.88800(N)    076 17 24.87300(W) AD(       ) 1
 HV6108
 HV6108.Superseded values are not recommended for survey control.
 HV6108
 HV6108.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6108.See file dsdata.pdf to determine how the superseded data were derived.
 HV6108
 HV6108_MARKER: DS = TRIANGULATION STATION DISK
 HV6108_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6108_STAMPING: DUPOINT 1934
 HV6108_MARK LOGO: CGS
 HV6108_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6108+STABILITY: SURFACE MOTION
 HV6108
 HV6108  HISTORY     - Date     Condition        Report By
 HV6108  HISTORY     - 1934     MONUMENTED       CGS
 HV6108  HISTORY     - 1938     GOOD             CGS
 HV6108  HISTORY     - 1944     GOOD             CGS
 HV6108  HISTORY     - 1961     SEE DESCRIPTION  CGS
 HV6108
 HV6108                          STATION DESCRIPTION
 HV6108
 HV6108'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6108'THIS FIRST-ORDER STATION IS ON COOKS POINT, ON THE S SIDE OF
 HV6108'CHOPTANK RIVER AT ITS MOUTH.  IT IS IN A CLEARING NEAR THE EXTREME
 HV6108'END OF THE POINT, ABOUT 0.3 MILE NW OF THE WOODS, 100 METERS
 HV6108'(328 FEET) SE OF THE WATER LINE, AND 53 METERS (174 FEET) NW OF
 HV6108'A LARGE DEAD TREE.  THE MARK PROJECTS ABOUT 4 INCHES ABOVE
 HV6108'GROUND.  THE STATION IS ON THE PROPERTY OF MR. F.V. DUPONT, BUT
 HV6108'IS STAMPED DUPOINT.
 HV6108'
 HV6108'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV6108'DISKS SET IN CONCRETE.
 HV6108'
 HV6108'REFERENCE MARK NO.1 IS 24.714 METERS NNE OF THE STATION AND
 HV6108'1 METER S OF A SMALL PINE TREE.  REFERENCE MARK NO.2, AZIMUTH
 HV6108'MARK, IS 0.3 MILE SE OF THE STATION AT THE EDGE OF THE WOODS, IN
 HV6108'NE CORNER OF FIELD, 5 METERS SW OF THE DIRT ROAD.  IT PROJECTS 2
 HV6108'INCHES.  REFERENCE MARK NO.3 IS 24.257 METERS WSW OF THE STATION.
 HV6108
 HV6108                          STATION RECOVERY (1938)
 HV6108
 HV6108'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV6108'STATION MARKS AND REFERENCE MARKS RECOVERED IN GOOD CONDITION AS
 HV6108'DESCRIBED.
 HV6108'
 HV6108'DESCRIPTION IS ADEQUATE EXCEPT FOR THE FOLLOWING ADDITIONS AND
 HV6108'CORRECTIONS--
 HV6108'
 HV6108'(1) STATION MARK IS IN A CULTIVATED FIELD 15 METERS S OF THE
 HV6108'NORTHERLY LIMIT OF CULTIVATION, 150 METERS SW OF A GROUP OF SMALL
 HV6108'PINE TREES GROWING ALONG THE NE SHORE OF COOKS POINT.
 HV6108'
 HV6108'(2) DEAD TREE HAS BEEN MOVED FOR CULTIVATION.
 HV6108'
 HV6108'(3) REFERENCE MARK NO.3 IS ON THE EDGE OF CULTIVATION.
 HV6108
 HV6108                          STATION RECOVERY (1944)
 HV6108
 HV6108'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944 (LPR)
 HV6108'THIS FIRST ORDER STATION IS ON COOKS POINT, ON THE SOUTH SIDE
 HV6108'OF THE CHOPTANK RIVER AT ITS MOUTH, ON PROPERTY OWNED BY
 HV6108'MR. F. V. DUPONT.  IT IS 11 METERS WEST OF THE EAST SIDE OF A
 HV6108'PLOWED FIELD WHICH IS BORDERED ON THE EAST BY BRUSH ABOUT 10 FEET
 HV6108'HIGH AND SMALL SCATTERED PINE TREES WHICH CLOSE THE VIEW TO THE
 HV6108'RIVER.  IT IS ABOUT 30 METERS SW OF A CLEARING AND ABOUT 100
 HV6108'METERS BACK OF THE RIVER.  THE STATION MARK PROJECTS ABOUT 3
 HV6108'INCHES AND IS STAMPED DUPOINT 1934.  THE SURFACE, UNDERGROUND,
 HV6108'AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE.
 HV6108'
 HV6108'REFERENCE MARK NO. 1 IS 24.714 METERS, 81.08 FEET NNE OF STATION
 HV6108'AND 1 METER SOUTH OF A SMALL PINE TREE AT EDGE OF BRUSH LINE.  IT
 HV6108'PROJECTS 1 INCH AND IS STAMPED DUPOINT NO 1 1934.  REFERENCE MARK
 HV6108'NO. 2, AZIMUTH MARK, IS 0.3 MILE SE OF STATION AT EDGE OF THE
 HV6108'WOODS IN NE CORNER OF THE FIELD.  IT WAS NOT VISITED.  REFERENCE
 HV6108'MARK NO. 3 IS 23.975 METERS, 78.69 FEET WEST OF THE STATION AND
 HV6108'AT EDGE OF BRUSH LINE.  IT PROJECTS 1 INCH AND IS STAMPED
 HV6108'DUPOINT NO 3 1934.  TO REACH THE STATION FROM THE JUNCTION OF
 HV6108'STATE ROUTES 16 AND 343 IN S PART OF CAMBRIDGE DRIVE WEST ON 343
 HV6108'FOR 2.25 MILES, THEN TAKE LEFT FORK AND DRIVE 7.4 MILES ON
 HV6108'MAIN PAVED ROAD TO TYDOL FILLING STATION AND STORE, THEN
 HV6108'CONTINUE 0.4 MILE, THEN BEAR RIGHT ON GRAVEL ROAD AND DRIVE 1.2
 HV6108'MILES, THEN FOLLOW MAIN ROAD THROUGH SEVERAL GATES FOR ABOUT 3
 HV6108'MILES TO THE STATION ON THE POINT, KEEPING ALONG THE WEST SIDE
 HV6108'OF THE FIELD FOR THE LAST MILE AFTER PASSING THE SAWMILL.
 HV6108
 HV6108                          STATION RECOVERY (1961)
 HV6108
 HV6108'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6108'STATION MARK AND REFERENCE MARKS 1 AND 3 HAVE BEEN DESTROYED BY
 HV6108'EROSION.  THE STATION NOW PLOTS 100 FT. OFF SHORE OF THE MHWL.  THE
 HV6108'CARETAKER OF THE PROPERTY STATED THAT THE LAST REMAINING MARK WAS
 HV6108'DESTROYED IN THE WINTER OF 1959-1960.  THE AZIMUTH MARK IS ALL
 HV6108'THAT REMAINS OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5940 ***********************************************************************
 HV5940  DESIGNATION -  DUPONT MSFC 1910
 HV5940  PID         -  HV5940
 HV5940  STATE/COUNTY-  MD/DORCHESTER
 HV5940  COUNTRY     -  US
 HV5940  USGS QUAD   -  CHURCH CREEK (2016)
 HV5940
 HV5940                         *CURRENT SURVEY CONTROL
 HV5940  ______________________________________________________________________
 HV5940* NAD 83(1991) POSITION- 38 34 00.96637(N) 076 12 38.12162(W)   ADJUSTED
 HV5940* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5940  ______________________________________________________________________
 HV5940  GEOID HEIGHT    -        -34.753 (meters)                     GEOID18
 HV5940  LAPLACE CORR    -         -5.07  (seconds)                    DEFLEC18
 HV5940  HORZ ORDER      -  THIRD
 HV5940
 HV5940.The horizontal coordinates were established by classical geodetic methods
 HV5940.and adjusted by the National Geodetic Survey in January 1992.
 HV5940
 HV5940.The orthometric height was scaled from a topographic map.
 HV5940
 HV5940.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5940.GEOID18 height accuracy estimate available here.
 HV5940
 HV5940.Click photographs - Photos may exist for this station.
 HV5940
 HV5940.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5940
 HV5940. The following values were computed from the NAD 83(1991) position.
 HV5940
 HV5940;                    North         East     Units Scale Factor Converg.
 HV5940;SPC MD       -   100,230.776   468,795.387   MT  0.99996430   +0 29 43.7
 HV5940;SPC MD       -   328,840.47  1,538,039.53   sFT  0.99996430   +0 29 43.7
 HV5940;UTM  18      - 4,269,415.356   394,535.180   MT  0.99973697   -0 45 17.2
 HV5940
 HV5940!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5940!SPC MD       -   1.00000549  x   0.99996430  =   0.99996979
 HV5940!UTM  18      -   1.00000549  x   0.99973697  =   0.99974246
 HV5940
 HV5940:                Primary Azimuth Mark                     Grid Az
 HV5940:SPC MD       -  BECKWITH MSFC 1910                       093 30 31.6
 HV5940:UTM  18      -  BECKWITH MSFC 1910                       094 45 32.5
 HV5940
 HV5940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9453569415(NAD 83)
 HV5940
 HV5940|---------------------------------------------------------------------|
 HV5940| PID    Reference Object                     Distance      Geod. Az  |
 HV5940|                                                           dddmmss.s |
 HV5940| HV5934 BECKWITH MSFC 1910                  APPROX. 0.5 KM 0940015.3 |
 HV5940| HV5947 CHERRY IS WATER TANK FLAGSTAFF      APPROX. 0.5 KM 1922846.4 |
 HV5940|---------------------------------------------------------------------|
 HV5940
 HV5940                          SUPERSEDED SURVEY CONTROL
 HV5940
 HV5940  NAD 83(1986)-  38 34 00.96384(N)    076 12 38.13707(W) AD(       ) 3
 HV5940  NAD 27      -  38 34 00.55900(N)    076 12 39.32700(W) AD(       ) 3
 HV5940  USSD        -  38 34 00.94800(N)    076 12 39.10600(W) AD(       ) 3
 HV5940
 HV5940.Superseded values are not recommended for survey control.
 HV5940
 HV5940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5940.See file dsdata.pdf to determine how the superseded data were derived.
 HV5940
 HV5940_MARKER: Z = SEE DESCRIPTION
 HV5940_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5940_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5940+STABILITY: SURFACE MOTION
 HV5940
 HV5940  HISTORY     - Date     Condition        Report By
 HV5940  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5940  HISTORY     - 1961     GOOD             CGS
 HV5940  HISTORY     - 1975     GOOD             MDDNR
 HV5940
 HV5940                          STATION DESCRIPTION
 HV5940
 HV5940'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5940'ON THE WESTERN SHORE OF BECKWITHS CREEK, ABOUT 1/8 MILE NW OF NE
 HV5940'END OF CHERRY ISLAND, ABOUT 1 FOOT ABOVE HIGH WATER, IN A GROVE OF
 HV5940'SMALL PINE TREES, 17 YARDS W OF SHORE, 25 YARDS NW OF SHORE, AND
 HV5940'35 YARDS N OF SHORE.  STATION IS MARKED BY A HOLE IN THE CENTER OF
 HV5940'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV5940'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV5940'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5940'TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN
 HV5940'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV5940'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5940'ARE AS FOLLOWS--CENTER OF ROOF OF BUNGALOW ON CHERRY ISLAND, 3/8
 HV5940'MILE, S 18 DEG 38 MIN W.  CHIMNEY ON NEAR END OF HOUSE, 1-1/8
 HV5940'MILES, S 37 DEG 34 MIN W.  NAIL IN BLAZE IN 4-INCH HOLLY TREE,
 HV5940'6.55 METERS (21.49 FEET), S 46 DEG 34 MIN W.  NEAR END OF 1
 HV5940'1/2-STORY HOUSE, 7/8 MILE, S 59 DEG 8 MIN W.  NAIL IN BLAZE IN
 HV5940'6-INCH CEDAR TREE, 12.84 METERS (42.1 FEET), N 61 DEG 0 MIN W.
 HV5940'NEAR PEAK OF BARN, 1 MILE, N 38 DEG 2 MIN E.  NEAR PEAK OF HOUSE,
 HV5940'1/4 MILE, N 75 DEG 19 MIN E.  BETWEEN TWO CHIMNEYS ON HOUSE, 1/2
 HV5940'MILE, S 52 DEG 22 MIN E.  NAIL IN BLAZE IN 6-INCH PINE TREE, 6.60
 HV5940'METERS (21.65 FEET), S 50 DEG 8 MIN E.
 HV5940
 HV5940                          STATION RECOVERY (1961)
 HV5940
 HV5940'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5940'STATION RECOVERED IN GOOD CONDITION.  THE MARK IS NOW 10 FT. W OF
 HV5940'SHORE AND PROJECTS 8 INCHES ABOVE GROUND.
 HV5940
 HV5940                          STATION RECOVERY (1975)
 HV5940
 HV5940'RECOVERY NOTE BY MD DEPT OF NAT RES 1975
 HV5940'STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.  WITNESS
 HV5940'POST WAS SET 1 FOOT E OF STATION MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6593 ***********************************************************************
 HV6593  DESIGNATION -  DUSKY
 HV6593  PID         -  HV6593
 HV6593  STATE/COUNTY-  MD/ST MARYS
 HV6593  COUNTRY     -  US
 HV6593  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6593
 HV6593                         *CURRENT SURVEY CONTROL
 HV6593  ______________________________________________________________________
 HV6593* NAD 83(1993) POSITION- 38 09 45.64986(N) 076 25 42.49936(W)   ADJUSTED
 HV6593* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6593  ______________________________________________________________________
 HV6593  GEOID HEIGHT    -        -34.812 (meters)                     GEOID18
 HV6593  LAPLACE CORR    -         -6.02  (seconds)                    DEFLEC18
 HV6593  HORZ ORDER      -  THIRD
 HV6593
 HV6593.The horizontal coordinates were established by classical geodetic methods
 HV6593.and adjusted by the National Geodetic Survey in November 1994.
 HV6593
 HV6593.The orthometric height was scaled from a topographic map.
 HV6593
 HV6593.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6593.GEOID18 height accuracy estimate available here.
 HV6593
 HV6593.Click photographs - Photos may exist for this station.
 HV6593
 HV6593.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6593
 HV6593. The following values were computed from the NAD 83(1993) position.
 HV6593
 HV6593;                    North         East     Units Scale Factor Converg.
 HV6593;SPC MD       -    55,216.873   450,088.623   MT  1.00002673   +0 21 31.4
 HV6593;SPC MD       -   181,157.36  1,476,665.76   sFT  1.00002673   +0 21 31.4
 HV6593;UTM  18      - 4,224,829.034   374,858.433   MT  0.99979287   -0 52 57.9
 HV6593
 HV6593!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6593!SPC MD       -   1.00000535  x   1.00002673  =   1.00003208
 HV6593!UTM  18      -   1.00000535  x   0.99979287  =   0.99979822
 HV6593
 HV6593:                Primary Azimuth Mark                     Grid Az
 HV6593:SPC MD       -  SMOKE                                    089 21 07.8
 HV6593:UTM  18      -  SMOKE                                    090 35 37.1
 HV6593
 HV6593_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7485824829(NAD 83)
 HV6593
 HV6593|---------------------------------------------------------------------|
 HV6593| PID    Reference Object                     Distance      Geod. Az  |
 HV6593|                                                           dddmmss.s |
 HV6593| CX2722 DUSKY RM                             25.090 METERS 00234     |
 HV6593| HV6592 SMOKE                               APPROX. 0.6 KM 0894239.2 |
 HV6593|---------------------------------------------------------------------|
 HV6593
 HV6593                          SUPERSEDED SURVEY CONTROL
 HV6593
 HV6593  NAD 83(1991)-  38 09 45.64893(N)    076 25 42.50239(W) AD(       ) 3
 HV6593  NAD 83(1986)-  38 09 45.64979(N)    076 25 42.51590(W) AD(       ) 3
 HV6593  NAD 27      -  38 09 45.25900(N)    076 25 43.73200(W) AD(       ) 3
 HV6593  USSD        -  38 09 45.64000(N)    076 25 43.44100(W) AD(       ) 3
 HV6593
 HV6593.Superseded values are not recommended for survey control.
 HV6593
 HV6593.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6593.See file dsdata.pdf to determine how the superseded data were derived.
 HV6593
 HV6593_MARKER: Z = SEE DESCRIPTION
 HV6593_SETTING: 0 = UNSPECIFIED SETTING
 HV6593
 HV6593  HISTORY     - Date     Condition        Report By
 HV6593  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6593  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6593  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6593
 HV6593                          STATION DESCRIPTION
 HV6593
 HV6593'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6593'STATION IS ON THE NORTHWESTERN SHORE OF ST. INIGOES CREEK, ON
 HV6593'A PROMINENT POINT BETWEEN CREEK AND SMALL COVE, NEARLY OPPOSITE
 HV6593'GRASON WHARF, AND ABOUT 3/4 MILE NE OF ST. MARYS RIVER.  STATION
 HV6593'IS ABOUT ON LEVEL WITH HIGH WATER, ABOUT 5 YARDS E OF A FENCE
 HV6593'WHICH IS ON TOP OF A TREE-FRINGED BANK 15 FEET HIGH.
 HV6593'
 HV6593'STATION MARK IS CENTER OF 3-INCH SQUARE WOODEN BOX.
 HV6593'
 HV6593'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV6593'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6593'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6593'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6593'POST.  IT IS NEAR AN OLD CREEK BED AND IS 25.09 METERS (82.3
 HV6593'FEET) FROM STATION  N 02 DEG 34 MIN W.  DISTANCES AND
 HV6593'BEARINGS TO OTHER POINTS OF REFERENCE ARE AS FOLLOWS--LEFT
 HV6593'PEAK OF ROOF OF RALEYS BARN, 5/8 MILE, S 25 DEG 15 MIN W.  LEFT
 HV6593'CORNER OF RALEYS HOUSE, 5/8 MILE, S 32 DEG 23 MIN W.  RIGHT CORNER
 HV6593'OF PRIESTS VILLA, 1 MILE, S 38 DEG 13 MIN. WCEDAR TREE, 20
 HV6593'YARDS, S 48 DEG 45 MIN W.  CORNER POST OF FENCE, 4
 HV6593'YARDS, N 54 DEG 02 MIN W.  NAIL IN BLAZE IN 6-INCH LOCUST TREE,
 HV6593'10.44 METERS (34.2 FEET), N 02 DEG 18 MIN W.  NEAR END OF GRASON
 HV6593'WHARF, 1/8 MILE, S 57 DEG 24 MIN.  RIGHT PEAK OF ROOF OF HOUSE, 5/8
 HV6593'MILE, S 20 DEG 08 MIN E.  CHIMNEY ON OUTSIDE OF SMALL HOUSE,
 HV6593'5/8S 11 DEG 08 MIN E.MIN.
 HV6593
 HV6593                          STATION RECOVERY (1942)
 HV6593
 HV6593'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6593'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE
 HV6593'HOUR, BUT NO TRACE OF IT COULD BE FOUND.  IT IS RECOMMENDED THAT
 HV6593'THIS STATION BE CLASSIFIED AS LOST.
 HV6593
 HV6593                          STATION RECOVERY (1958)
 HV6593
 HV6593'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6593'A THOROUGH SEARCH WAS MADE FOR THIS REFERENCE MARK BUT DUE TO THE
 HV6593'DESTRUCTION OF ALL LOCAL REFERENCES IT WAS NOT FOUND AND SHOULD
 HV6593'BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5212 ***********************************************************************
 JV5212  DESIGNATION -  DUTCH
 JV5212  PID         -  JV5212
 JV5212  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5212  COUNTRY     -  US
 JV5212  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5212
 JV5212                         *CURRENT SURVEY CONTROL
 JV5212  ______________________________________________________________________
 JV5212* NAD 83(1991) POSITION- 39 04 42.86467(N) 076 27 31.66884(W)   ADJUSTED
 JV5212* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 JV5212  ______________________________________________________________________
 JV5212  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 JV5212  LAPLACE CORR    -         -2.57  (seconds)                    DEFLEC18
 JV5212  HORZ ORDER      -  SECOND
 JV5212
 JV5212.The horizontal coordinates were established by classical geodetic methods
 JV5212.and adjusted by the National Geodetic Survey in January 1992.
 JV5212
 JV5212.The orthometric height was scaled from a topographic map.
 JV5212
 JV5212.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5212.GEOID18 height accuracy estimate available here.
 JV5212
 JV5212.Click photographs - Photos may exist for this station.
 JV5212
 JV5212.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5212
 JV5212. The following values were computed from the NAD 83(1991) position.
 JV5212
 JV5212;                    North         East     Units Scale Factor Converg.
 JV5212;SPC MD       -   156,867.553   446,828.251   MT  0.99995609   +0 20 22.8
 JV5212;SPC MD       -   514,656.30  1,465,969.02   sFT  0.99995609   +0 20 22.8
 JV5212;UTM  18      - 4,326,508.776   373,817.219   MT  0.99979605   -0 55 11.0
 JV5212
 JV5212!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5212!SPC MD       -   1.00000337  x   0.99995609  =   0.99995946
 JV5212!UTM  18      -   1.00000337  x   0.99979605  =   0.99979942
 JV5212
 JV5212:                Primary Azimuth Mark                     Grid Az
 JV5212:SPC MD       -  HIC                                      006 15 25.1
 JV5212:UTM  18      -  HIC                                      007 30 58.9
 JV5212
 JV5212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7381726508(NAD 83)
 JV5212
 JV5212|---------------------------------------------------------------------|
 JV5212| PID    Reference Object                     Distance      Geod. Az  |
 JV5212|                                                           dddmmss.s |
 JV5212| JV5211 HIC                                 APPROX. 1.2 KM 0063547.9 |
 JV5212| JV5226 PAVILION                            APPROX. 3.1 KM 1313305.2 |
 JV5212| JV5244 MOUNTAIN PT MAGOTHY RIVER BCN       APPROX. 3.3 KM 1395017.0 |
 JV5212| CA9373 DUTCH RM                             16.720 METERS 24328     |
 JV5212|---------------------------------------------------------------------|
 JV5212
 JV5212                          SUPERSEDED SURVEY CONTROL
 JV5212
 JV5212  NAD 83(1986)-  39 04 42.86052(N)    076 27 31.67951(W) AD(       ) 2
 JV5212  NAD 27      -  39 04 42.46200(N)    076 27 32.82000(W) AD(       ) 2
 JV5212
 JV5212.Superseded values are not recommended for survey control.
 JV5212
 JV5212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5212.See file dsdata.pdf to determine how the superseded data were derived.
 JV5212
 JV5212_MARKER: DS = TRIANGULATION STATION DISK
 JV5212_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5212
 JV5212  HISTORY     - Date     Condition        Report By
 JV5212  HISTORY     - 1933     MONUMENTED       CGS
 JV5212  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5212
 JV5212                          STATION DESCRIPTION
 JV5212
 JV5212'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5212'STATION IS ON EASTERN END OF DOBBINS ISLAND (DUTCH SHIP ISLAND),
 JV5212'MAGOTHY RIVER.  STATION IS 9.15 METERS (30 FEET) FROM HIGH BLUFF
 JV5212'ON E END OF ISLAND, 18.9 METERS (62 FEET) FROM HIGH BLUFF ON N
 JV5212'SIDE OF ISLAND, AND 10.4 METERS (34 FEET) FROM HIGH BLUFF TO S.
 JV5212'
 JV5212'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5212'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5212'
 JV5212'REFERENCE MARK NO.1 IS 7 FEET FROM AN 8-INCH WILD CHERRY TREE.
 JV5212'
 JV5212'STATION, REFERENCE MARK, AND TREE ARE IN RANGE.  THE STATION AND
 JV5212'REFERENCE MARKS ARE ON BLUFF ABOUT 25 FEET HIGH, AND ARE SET FLUSH
 JV5212'WITH THE SURFACE OF THE GROUND.
 JV5212'
 JV5212'DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 JV5212'REFERENCE ARE AS FOLLOWS--HICKORY POINT, 3/4 MILE, S 15 DEG W.
 JV5212'MOUNTAIN POINT, 2 MILES, N 70 DEG E.
 JV5212
 JV5212                          STATION RECOVERY (1961)
 JV5212
 JV5212'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5212'NO TRACE OF THE STATION OR THE REFERENCE MARK COULD BE FOUND.  THE
 JV5212'REFERENCED WILD CHERRY TREE WAS FOUND HANGING ON THE END OF THE
 JV5212'BLUFF.  SINCE NO MENTION OF WHICH SIDE OF THE RANGE THE TREE WAS,
 JV5212'IT COULD NOT POSITIVELY BE DETERMINED IF THE MARKS WERE ERODED
 JV5212'AWAY.  THE AREA IS COVERED WITH DENSE GROWTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7217 ***********************************************************************
 HV7217  DESIGNATION -  DUTCHMAN 2
 HV7217  PID         -  HV7217
 HV7217  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7217  COUNTRY     -  US
 HV7217  USGS QUAD   -  DEALE (2016)
 HV7217
 HV7217                         *CURRENT SURVEY CONTROL
 HV7217  ______________________________________________________________________
 HV7217* NAD 83(1991) POSITION- 38 52 10.41182(N) 076 30 34.60228(W)   ADJUSTED
 HV7217* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7217  ______________________________________________________________________
 HV7217  GEOID HEIGHT    -        -33.476 (meters)                     GEOID18
 HV7217  LAPLACE CORR    -         -3.54  (seconds)                    DEFLEC18
 HV7217  HORZ ORDER      -  THIRD
 HV7217
 HV7217.The horizontal coordinates were established by classical geodetic methods
 HV7217.and adjusted by the National Geodetic Survey in January 1992.
 HV7217
 HV7217.The orthometric height was scaled from a topographic map.
 HV7217
 HV7217.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7217.GEOID18 height accuracy estimate available here.
 HV7217
 HV7217.Click photographs - Photos may exist for this station.
 HV7217
 HV7217.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7217
 HV7217. The following values were computed from the NAD 83(1991) position.
 HV7217
 HV7217;                    North         East     Units Scale Factor Converg.
 HV7217;SPC MD       -   133,640.400   442,556.120   MT  0.99994985   +0 18 28.0
 HV7217;SPC MD       -   438,451.88  1,451,952.87   sFT  0.99994985   +0 18 28.0
 HV7217;UTM  18      - 4,303,384.391   369,037.143   MT  0.99981120   -0 56 51.0
 HV7217
 HV7217!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7217!SPC MD       -   1.00000529  x   0.99994985  =   0.99995514
 HV7217!UTM  18      -   1.00000529  x   0.99981120  =   0.99981649
 HV7217
 HV7217:                Primary Azimuth Mark                     Grid Az
 HV7217:SPC MD       -  BLOODY POINT BAR LH                      110 55 38.9
 HV7217:UTM  18      -  BLOODY POINT BAR LH                      112 10 57.9
 HV7217
 HV7217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6903703384(NAD 83)
 HV7217
 HV7217|---------------------------------------------------------------------|
 HV7217| PID    Reference Object                     Distance      Geod. Az  |
 HV7217|                                                           dddmmss.s |
 HV7217| HV6299 BLOODY POINT BAR LH                 APPROX.11.0 KM 1111406.9 |
 HV7217| HV7179 B BETA                              APPROX. 2.0 KM 1943036.6 |
 HV7217| CX2723 DUTCHMAN RM                          10.610 METERS 34014     |
 HV7217|---------------------------------------------------------------------|
 HV7217
 HV7217                          SUPERSEDED SURVEY CONTROL
 HV7217
 HV7217  NAD 83(1986)-  38 52 10.40869(N)    076 30 34.61438(W) AD(       ) 3
 HV7217  NAD 27      -  38 52 10.00500(N)    076 30 35.76000(W) AD(       ) 3
 HV7217  USSD        -  38 52 10.37000(N)    076 30 35.58100(W) AD(       ) 3
 HV7217
 HV7217.Superseded values are not recommended for survey control.
 HV7217
 HV7217.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7217.See file dsdata.pdf to determine how the superseded data were derived.
 HV7217
 HV7217
 HV7217  HISTORY     - Date     Condition        Report By
 HV7217  HISTORY     - 1898     MONUMENTED       CGS
 HV7217  HISTORY     - 1906     GOOD             CGS
 HV7217  HISTORY     - 1938     MARK NOT FOUND   MDDNR
 HV7217
 HV7217                          STATION DESCRIPTION
 HV7217
 HV7217'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 HV7217'ON THE N SIDE OF THE ENTRANCE TO WEST RIVER, ON DUTCHMAN POINT,
 HV7217'BETWEEN SHORE OF BAY AND RHODE RIVER.  STATION IS 10 FEET BACK
 HV7217'FROM EDGE OF BANK 12 FEET HIGH.  A SMALL LONE LOCUST TREE STANDS
 HV7217'ABOUT 11 YARDS NW OF THE STATION.  STATION MARK IS CENTER OF TWO
 HV7217'4-INCH TILE PIPES PLACED ONE ABOVE THE OTHER, WITH TOP OF UPPER
 HV7217'PIPE 6 INCHES BELOW SURFACE OF GROUND.
 HV7217'
 HV7217'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7217'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7217'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7217'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7217'IS 10.61 METERS (34.8 FEET) FROM STATION IN BEARING N 19 DEG 47
 HV7217'MIN W.  DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV7217'REFERENCE ARE AS FOLLOWS--CHIMNEY ON SMALL WHITE HOUSE, 1/2 MILE,
 HV7217'S 55 DEG 40 MIN W.  CUPOLA ON LARGE BUILDING, 1 MILE, N 72 DEG 15
 HV7217'MIN W.  NAIL IN BLAZE IN 2-INCH LOCUST TREE, 10.25 METERS (33.6
 HV7217'FEET), N 54 DEG 34 MIN W.  CHIMNEY ON RED-ROOF HOUSE, 1/4 MILE, N
 HV7217'25 DEG 15 MIN W.  PEAK OF WHARF HOUSE AT NOWELL PIER, 1 MILE, S 8
 HV7217'DEG 3 MIN E.
 HV7217
 HV7217                          STATION RECOVERY (1938)
 HV7217
 HV7217'RECOVERY NOTE BY MD DEPT OF NAT RES 1938
 HV7217'STATION LOST.  APPARENTLY WASHED AWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6846 ***********************************************************************
 HV6846  DESIGNATION -  DWARF MSFC 1908
 HV6846  PID         -  HV6846
 HV6846  STATE/COUNTY-  MD/CALVERT
 HV6846  COUNTRY     -  US
 HV6846  USGS QUAD   -  MECHANICSVILLE (2016)
 HV6846
 HV6846                         *CURRENT SURVEY CONTROL
 HV6846  ______________________________________________________________________
 HV6846* NAD 83(1993) POSITION- 38 29 55.31869(N) 076 39 46.39361(W)   ADJUSTED
 HV6846* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6846  ______________________________________________________________________
 HV6846  GEOID HEIGHT    -        -33.735 (meters)                     GEOID18
 HV6846  LAPLACE CORR    -         -3.76  (seconds)                    DEFLEC18
 HV6846  HORZ ORDER      -  SECOND
 HV6846
 HV6846.The horizontal coordinates were established by classical geodetic methods
 HV6846.and adjusted by the National Geodetic Survey in November 1994.
 HV6846
 HV6846.The orthometric height was scaled from a topographic map.
 HV6846
 HV6846.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6846.GEOID18 height accuracy estimate available here.
 HV6846
 HV6846.Click photographs - Photos may exist for this station.
 HV6846
 HV6846.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6846
 HV6846. The following values were computed from the NAD 83(1993) position.
 HV6846
 HV6846;                    North         East     Units Scale Factor Converg.
 HV6846;SPC MD       -    92,413.279   429,406.910   MT  0.99997138   +0 12 41.7
 HV6846;SPC MD       -   303,192.57  1,408,812.50   sFT  0.99997138   +0 12 41.7
 HV6846;UTM  18      - 4,262,459.241   354,992.544   MT  0.99985895   -1 02 07.2
 HV6846
 HV6846!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6846!SPC MD       -   1.00000533  x   0.99997138  =   0.99997671
 HV6846!UTM  18      -   1.00000533  x   0.99985895  =   0.99986428
 HV6846
 HV6846:                Primary Azimuth Mark                     Grid Az
 HV6846:SPC MD       -  BUZZ                                     135 54 38.8
 HV6846:UTM  18      -  BUZZ                                     137 09 27.7
 HV6846
 HV6846_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5499262459(NAD 83)
 HV6846
 HV6846|---------------------------------------------------------------------|
 HV6846| PID    Reference Object                     Distance      Geod. Az  |
 HV6846|                                                           dddmmss.s |
 HV6846| HV6839 BUZZ                                APPROX. 1.2 KM 1360720.5 |
 HV6846|---------------------------------------------------------------------|
 HV6846
 HV6846                          SUPERSEDED SURVEY CONTROL
 HV6846
 HV6846  NAD 83(1991)-  38 29 55.31870(N)    076 39 46.39492(W) AD(       ) 2
 HV6846  NAD 83(1986)-  38 29 55.31783(N)    076 39 46.40901(W) AD(       ) 2
 HV6846  NAD 27      -  38 29 54.87200(N)    076 39 47.55700(W) AD(       ) 2
 HV6846  USSD        -  38 29 55.23100(N)    076 39 47.30300(W) AD(       ) 3
 HV6846
 HV6846.Superseded values are not recommended for survey control.
 HV6846
 HV6846.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6846.See file dsdata.pdf to determine how the superseded data were derived.
 HV6846
 HV6846_MARKER: H = DRILL HOLE
 HV6846_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6846_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6846+STABILITY: SURFACE MOTION
 HV6846
 HV6846  HISTORY     - Date     Condition        Report By
 HV6846  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6846  HISTORY     - 1930     GOOD             MDDNR
 HV6846  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6846
 HV6846                          STATION DESCRIPTION
 HV6846
 HV6846'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6846'STATION IS ON THE EASTERN SHORE OF PATUXENT RIVER, ABOUT 2 MILES
 HV6846'NNW OF SHERIDAN POINT, AND ABOUT 1 MILE SE OF BENEDICT, ON A
 HV6846'POINT OF LAND OPPOSITE THE MOUTH OF INDIAN CREEK.  STATION IS ON
 HV6846'SAND AND GRASS LAND ABOUT 1 FOOT ABOVE HIGH WATER, 6 YARDS NE FROM
 HV6846'EXTREME END OF POINT, 4 YARDS E OF ONE EDGE OF SHORE, AND 6 YARDS
 HV6846'N OF ANOTHER EDGE OF SHORE.  POINT ON WHICH THE STATION IS LOCATED
 HV6846'HAS A SUGARBERRY TREE, SEVERAL SMALL LOCUST TREES, AND WATER
 HV6846'BUSHES, AND A POND BEHIND BUSHES AND TREES ABOUT 100 YARDS TO
 HV6846'THE E.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP
 HV6846'OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6846'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6846'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6846'TOP OF POST.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV6846'REFERENCE ARE AS FOLLOWS--MIDDLE CUPOLA ON STABLE, 1-1/2 MILES, S
 HV6846'3 DEG 17 MIN W.  RIGHT PILLAR ON SOTHORON HOUSE PORCH, 1 MILE, S
 HV6846'41 DEG 26 MIN W.  NEAREST CORNER OF TOP OF NEAREST CHIMNEY ON
 HV6846'TENANT HOUSE, 2 MILES, N 57 DEG 24 MIN W.  CENTER OF ROOF OF
 HV6846'SQUARE HOUSE, 1 MILE, N 54 DEG 39 MIN W. NAIL IN BLAZE IN 4-INCH
 HV6846'LOCUST TREE, 4.22 METERS (13.84 FEET), N 44 DEG 17 MIN W.  CANNING
 HV6846'HOUSE STACK, 1-1/4 MILES, N 42 DEG 51 MIN W.  LEFT TANGENT OF
 HV6846'WHARF, 3/4 MILE, N 13 DEG 36 MIN W. NAIL IN 10-INCH SUGARBERRY
 HV6846'TREE, 8.94 METERS (29.33 FEET), N 14 DEG 43 MIN E.  NAIL IN BLAZE
 HV6846'IN 3-INCH LOCUST TREE, 2.68 METERS (8.79 FEET), N 58 DEG 27 MIN E.
 HV6846'CHIMNEY ON SMALL HOUSE, 2 MILES, S 59 DEG 7 MIN E.  LEFT POINT OF
 HV6846'PEAK OF ROOF OF DOWELLS, 2-1/4 MILES, S 30 DEG 25 MIN E.  LEFT
 HV6846'END OF PEAK OF ROOF OF TRENT HALL WHARF, 1-1/2 MILES, S 2 DEG 20
 HV6846'MIN E.
 HV6846
 HV6846                          STATION RECOVERY (1930)
 HV6846
 HV6846'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6846'STATION RECOVERED AND TRIPOD ERECTED.
 HV6846
 HV6846                          STATION RECOVERY (1943)
 HV6846
 HV6846'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6846'A SEARCH WAS MADE OF THIS LOCALITY AND IT WAS FOUND THAT THE POINT
 HV6846'UPON WHICH THE STATION WAS ESTABLISHED HAS BEEN WASHED BACK FOR A
 HV6846'DISTANCE OF AT LEAST 60 YARDS.  SINCE THIS STATION WAS ORIGINALLY
 HV6846'LOCATED 6 YARDS FROM THE EXTREME END OF THE POINT, IT IS THOUGHT
 HV6846'THAT IT MUST HAVE WASHED OUT.
 HV6846'
 HV6846'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2367 ***********************************************************************
 HU2367  DESIGNATION -  DYKES
 HU2367  PID         -  HU2367
 HU2367  STATE/COUNTY-  MD/WICOMICO
 HU2367  COUNTRY     -  US
 HU2367  USGS QUAD   -  SALISBURY (2016)
 HU2367
 HU2367                         *CURRENT SURVEY CONTROL
 HU2367  ______________________________________________________________________
 HU2367* NAD 83(1986) POSITION- 38 19 21.     (N) 075 33 39.     (W)   SCALED
 HU2367* NAVD 88 ORTHO HEIGHT -    12.659 (meters)       41.53  (feet) ADJUSTED
 HU2367  ______________________________________________________________________
 HU2367  GEOID HEIGHT    -        -35.916 (meters)                     GEOID18
 HU2367  DYNAMIC HEIGHT  -         12.651 (meters)       41.51  (feet) COMP
 HU2367  MODELED GRAVITY -    980,000.9   (mgal)                       NAVD 88
 HU2367
 HU2367  VERT ORDER      -  SECOND    CLASS I
 HU2367
 HU2367.The horizontal coordinates were scaled from a map and have
 HU2367.an estimated accuracy of +/- 6 seconds.
 HU2367
 HU2367.The orthometric height was determined by differential leveling and
 HU2367.adjusted by the NATIONAL GEODETIC SURVEY
 HU2367.in June 1991.
 HU2367
 HU2367.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2367.GEOID18 height accuracy estimate available here.
 HU2367
 HU2367.Click photographs - Photos may exist for this station.
 HU2367
 HU2367.The dynamic height is computed by dividing the NAVD 88
 HU2367.geopotential number by the normal gravity value computed on the
 HU2367.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2367.degrees latitude (g = 980.6199 gals.).
 HU2367
 HU2367.The modeled gravity was interpolated from observed gravity values.
 HU2367
 HU2367;                    North         East    Units  Estimated Accuracy
 HU2367;SPC MD       -    73,790.      525,840.      MT  (+/- 180 meters Scaled)
 HU2367
 HU2367_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH509417(NAD 83)
 HU2367
 HU2367                          SUPERSEDED SURVEY CONTROL
 HU2367
 HU2367  NGVD 29 (06/12/91)   12.911  (m)           42.36   (f) ADJUSTED    2 1
 HU2367
 HU2367.Superseded values are not recommended for survey control.
 HU2367
 HU2367.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2367.See file dsdata.pdf to determine how the superseded data were derived.
 HU2367
 HU2367_MARKER: DD = SURVEY DISK
 HU2367_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2367_STAMPING: DYKES 1965
 HU2367_MARK LOGO: MDBCSM
 HU2367_PROJECTION: FLUSH
 HU2367_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2367_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2367+STABILITY: SURFACE MOTION
 HU2367_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2367+SATELLITE: SATELLITE OBSERVATIONS - February 23, 1990
 HU2367
 HU2367  HISTORY     - Date     Condition        Report By
 HU2367  HISTORY     - 1962     MONUMENTED       MDBCSM
 HU2367  HISTORY     - 19900223 GOOD             NGS
 HU2367
 HU2367                          STATION DESCRIPTION
 HU2367
 HU2367'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2367'2.9 KM (1.80 MI) SOUTHEASTERLY ALONG STATE HIGHWAY 12 FROM THE
 HU2367'JUNCTION OF JOHNSON ROAD IN SALISBURY, 1.2 KM (0.75 MI) SOUTHEAST OF
 HU2367'THE INTERSECTION OF U.S. HIGHWAY 13, 27.0 M (88.58 FT) SOUTHEAST OF
 HU2367'THE CENTER OF DIXON ROAD, 15.3 M (50.20 FT) SOUTHEAST OF UTILITY POLE
 HU2367'NUMBER 47957 91668, 9.7 M (31.82 FT) SOUTHWEST OF THE CENTERLINE OF
 HU2367'THE HIGHWAY, 0.7 M (2.30 FT) BELOW THE LEVEL OF THE HIGHWAY, 0.3 M
 HU2367'(0.98 FT) NORTHEAST OF A WITNESS POST, AND IN A CONCRETE MONUMENT
 HU2367'THAT IS FLUSH WITH THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6836 ***********************************************************************
 HV6836  DESIGNATION -  DYNARD MSFC 1908
 HV6836  PID         -  HV6836
 HV6836  STATE/COUNTY-  MD/ST MARYS
 HV6836  COUNTRY     -  US
 HV6836  USGS QUAD   -  LEONARDTOWN (2016)
 HV6836
 HV6836                         *CURRENT SURVEY CONTROL
 HV6836  ______________________________________________________________________
 HV6836* NAD 83(1993) POSITION- 38 17 52.46123(N) 076 43 25.29396(W)   ADJUSTED
 HV6836* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6836  ______________________________________________________________________
 HV6836  GEOID HEIGHT    -        -33.749 (meters)                     GEOID18
 HV6836  LAPLACE CORR    -         -1.84  (seconds)                    DEFLEC18
 HV6836  HORZ ORDER      -  THIRD
 HV6836
 HV6836.The horizontal coordinates were established by classical geodetic methods
 HV6836.and adjusted by the National Geodetic Survey in November 1994.
 HV6836
 HV6836.The orthometric height was scaled from a topographic map.
 HV6836
 HV6836.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6836.GEOID18 height accuracy estimate available here.
 HV6836
 HV6836.Click photographs - Photos may exist for this station.
 HV6836
 HV6836.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6836
 HV6836. The following values were computed from the NAD 83(1993) position.
 HV6836
 HV6836;                    North         East     Units Scale Factor Converg.
 HV6836;SPC MD       -    70,106.983   424,170.213   MT  1.00000036   +0 10 24.3
 HV6836;SPC MD       -   230,009.33  1,391,631.77   sFT  1.00000036   +0 10 24.3
 HV6836;UTM  18      - 4,240,274.499   349,273.305   MT  0.99987979   -1 04 06.5
 HV6836
 HV6836!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6836!SPC MD       -   1.00000502  x   1.00000036  =   1.00000538
 HV6836!UTM  18      -   1.00000502  x   0.99987979  =   0.99988481
 HV6836
 HV6836:                Primary Azimuth Mark                     Grid Az
 HV6836:SPC MD       -  TURF MSFC 1908                           002 49 25.2
 HV6836:UTM  18      -  TURF MSFC 1908                           004 03 56.0
 HV6836
 HV6836_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4927340274(NAD 83)
 HV6836
 HV6836|---------------------------------------------------------------------|
 HV6836| PID    Reference Object                     Distance      Geod. Az  |
 HV6836|                                                           dddmmss.s |
 HV6836| HV6835 TURF MSFC 1908                      APPROX. 0.7 KM 0025949.5 |
 HV6836| HV6831 TOMAKOKIN MSFC 1908                 399.132 METERS 20241     |
 HV6836|---------------------------------------------------------------------|
 HV6836
 HV6836                          SUPERSEDED SURVEY CONTROL
 HV6836
 HV6836  NAD 83(1991)-  38 17 52.46006(N)    076 43 25.29935(W) AD(       ) 3
 HV6836  NAD 83(1986)-  38 17 52.46083(N)    076 43 25.31074(W) AD(       ) 3
 HV6836  NAD 27      -  38 17 52.03800(N)    076 43 26.39500(W) AD(       ) 3
 HV6836  USSD        -  38 17 52.63800(N)    076 43 26.36200(W) AD(       ) 3
 HV6836
 HV6836.Superseded values are not recommended for survey control.
 HV6836
 HV6836.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6836.See file dsdata.pdf to determine how the superseded data were derived.
 HV6836
 HV6836_MARKER: H = DRILL HOLE
 HV6836_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6836_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6836+STABILITY: SURFACE MOTION
 HV6836
 HV6836  HISTORY     - Date     Condition        Report By
 HV6836  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6836  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6836
 HV6836                          STATION DESCRIPTION
 HV6836
 HV6836'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6836'STATION IS ON THE WESTERN SHORE OF UPPER ST. CLEMENT BAY, ABOUT
 HV6836'1/2 MILE SW OF STONES WHARF, AND 1/4 MILE N OF TOMAKOKIN CREEK,
 HV6836'IN AN ANGLE OF RAIL FENCE, IN CORNER OF CULTIVATED FIELD, ABOUT 2
 HV6836'FEET ABOVE HIGH WATER, 8 YARDS W OF SHORE, 9 YARDS WSW OF SHORE,
 HV6836'AND 9 YARDS NW OF SHORE.
 HV6836'
 HV6836'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6836'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6836'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6836'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6836'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6836'AS FOLLOWS--NAIL IN BLAZE IN CEDAR FENCE POST, 2.45 METERS (8.04
 HV6836'FEET), S 4 DEG 17 MIN W.  CHIMNEY OF HOUSE, 1/4 MILE, S 33 DEG 16
 HV6836'MIN W.  NAIL IN BLAZE IN 10-INCH MULBERRY TREE, 4.85 METERS (15.91
 HV6836'FEET), N 31 DEG 56 MIN W.  RIGHT CHIMNEY OF GREENWELL HOUSE, 1/2 MILE,
 HV6836'N 34 DEG 5 MIN E.  NEAR PEAK OF ROOF ON STONES WHARF, 1/2 MILE, N
 HV6836'35 DEG 59 MIN E.  NEAR CORNER OF CHIMNEY OF HOUSE, 1/2 MILE, N 76
 HV6836'DEG 11 MIN E.  NEAR CORNER OF CHIMNEY OF HOUSE, 1/2 MILE, S 79
 HV6836'DEG 34 MIN E.  NAIL IN BLAZE IN 8-INCH PERSIMMON TREE, 2.42
 HV6836'METERS, S 75 DEG 33 MIN E.  NEAR CORNER OF CHIMNEY OF OLD HOUSE,
 HV6836'1/2 MILE, S 69 DEG 6 MIN E. LEFT CEDAR TREE ON CEDAR POINT, 7/8
 HV6836'MILE, 333 DEG 05 MIN, RIGHT CHIMNEY OF HOUSE, 7/8 MILE, S 19 DEG
 HV6836'47 MIN E.  NEAR PEAK OF ROOF ON COBRUMS WHARF, 3/4 MILE, S 13 DEG
 HV6836'39 MIN E.
 HV6836
 HV6836                          STATION RECOVERY (1942)
 HV6836
 HV6836'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV6836'STATION LOST, ERODED AWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3938 ***********************************************************************
 JU3938  DESIGNATION -  E
 JU3938  PID         -  JU3938
 JU3938  STATE/COUNTY-  MD/CECIL
 JU3938  COUNTRY     -  US
 JU3938  USGS QUAD   -  NORTH EAST (2016)
 JU3938
 JU3938                         *CURRENT SURVEY CONTROL
 JU3938  ______________________________________________________________________
 JU3938* NAD 83(1991) POSITION- 39 30 17.18087(N) 075 55 37.39187(W)   ADJUSTED
 JU3938* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3938  ______________________________________________________________________
 JU3938  GEOID HEIGHT    -        -33.311 (meters)                     GEOID18
 JU3938  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 JU3938  HORZ ORDER      -  THIRD
 JU3938
 JU3938.The horizontal coordinates were established by classical geodetic methods
 JU3938.and adjusted by the National Geodetic Survey in January 1992.
 JU3938
 JU3938.The orthometric height was scaled from a topographic map.
 JU3938
 JU3938.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3938.GEOID18 height accuracy estimate available here.
 JU3938
 JU3938.Click photographs - Photos may exist for this station.
 JU3938
 JU3938.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3938
 JU3938. The following values were computed from the NAD 83(1991) position.
 JU3938
 JU3938;                    North         East     Units Scale Factor Converg.
 JU3938;SPC MD       -   204,587.087   492,280.304   MT  1.00001004   +0 40 24.3
 JU3938;SPC MD       -   671,216.13  1,615,089.63   sFT  1.00001004   +0 40 24.3
 JU3938;UTM  18      - 4,373,204.362   420,297.652   MT  0.99967821   -0 35 23.2
 JU3938
 JU3938!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3938!SPC MD       -   1.00000526  x   1.00001004  =   1.00001530
 JU3938!UTM  18      -   1.00000526  x   0.99967821  =   0.99968347
 JU3938
 JU3938:                Primary Azimuth Mark                     Grid Az
 JU3938:SPC MD       -  5 2                                      173 01 41.6
 JU3938:UTM  18      -  5 2                                      174 17 29.1
 JU3938
 JU3938_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2029773204(NAD 83)
 JU3938
 JU3938|---------------------------------------------------------------------|
 JU3938| PID    Reference Object                     Distance      Geod. Az  |
 JU3938|                                                           dddmmss.s |
 JU3938| JU3582 5 2                                 APPROX. 1.9 KM 1734205.9 |
 JU3938| JU3581 GROVE NECK CHAN N REAR RNG LT       APPROX. 0.8 KM 2132146.2 |
 JU3938| JU3589 GROVE NECK CHAN N FRONT RNG LT      APPROX. 1.7 KM 2175856.9 |
 JU3938| JU3953 TOWN POINT CHAN W FRONT RNG LT      445.621 METERS 2341149.3 |
 JU3938| JU3952 TOWN POINT CHAN W REAR RNG LT       APPROX. 0.6 KM 2404245.9 |
 JU3938|---------------------------------------------------------------------|
 JU3938
 JU3938                          SUPERSEDED SURVEY CONTROL
 JU3938
 JU3938  NAD 83(1986)-  39 30 17.17335(N)    075 55 37.39899(W) AD(       ) 3
 JU3938  NAD 27      -  39 30 16.77600(N)    075 55 38.61300(W) AD(       ) 3
 JU3938
 JU3938.Superseded values are not recommended for survey control.
 JU3938
 JU3938.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3938.See file dsdata.pdf to determine how the superseded data were derived.
 JU3938
 JU3938_MARKER: DD = SURVEY DISK
 JU3938_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3938_STAMPING: E
 JU3938_MARK LOGO: USACE
 JU3938_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3938+STABILITY: SURFACE MOTION
 JU3938
 JU3938  HISTORY     - Date     Condition        Report By
 JU3938  HISTORY     - 1937     MONUMENTED       USACE
 JU3938  HISTORY     - 1938     GOOD             CGS
 JU3938  HISTORY     - 1938     GOOD             CGS
 JU3938  HISTORY     - 1953     MARK NOT FOUND   USGS
 JU3938
 JU3938                          STATION DESCRIPTION
 JU3938
 JU3938'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3938'LOCATED ON THE N SIDE OF ELK RIVER ON HYLANDS POINT.  IT IS 2.0
 JU3938'METERS INSHORE FROM HIGH WATER, 4.0 METERS SE OF 4-FOOT BLUFF
 JU3938'BANK, AND 15.5 METERS FROM THE BACK SIDE OF TWO SIMILAR GULLIES
 JU3938'IN BLUFF BANK.
 JU3938'
 JU3938'STATION IS MARKED BY A STANDARD U.S.E. DISK SET ATOP A 6-INCH
 JU3938'SQUARE CONCRETE POST AND PROJECTS 10 INCHES ABOVE GROUND.
 JU3938
 JU3938                          STATION RECOVERY (1938)
 JU3938
 JU3938'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3938'STATION MARK RECOVERED IN GOOD CONDITION.  STATION IS 6 MILES NE
 JU3938'OF TURKEY POINT ON THE W SIDE OF ELK RIVER ON HYLANDS POINT, THE
 JU3938'FIRST PROMINENT POINT S OF PINEY CREEK COVE.  STATION MARK IS ON
 JU3938'SAND BEACH 2.0 METERS FROM THE HIGH-WATER LINE, 4 METERS FROM A
 JU3938'5-FOOT BLUFF, AND 17 METERS S OF A SMALL GROUP OF 25-FOOT TREES.
 JU3938'
 JU3938'THE MARK IS A STANDARD U.S.E. DISK ATOP A 6-INCH SQUARE CONCRETE
 JU3938'POST AND PROJECTS 12 INCHES ABOVE THE SURFACE.  THE MARK MAY WASH
 JU3938'OUT SHORTLY AS THE BEACH ALONG THE POINT IS ERODING RAPIDLY.
 JU3938'
 JU3938'TO REACH THE STATION FROM THE COURTHOUSE IN ELKTON FOLLOW
 JU3938'U.S. HIGHWAY 40, 0.5 MILE W TO A TRAFFIC LIGHT.  TURN LEFT,
 JU3938'FOLLOW ROAD 0.5 MILE, TURN RIGHT ONTO TAR ROAD TO ELK NECK.  FOLLOW
 JU3938'TAR ROAD 5.8 MILES, TURN RIGHT ONTO DIRT ROAD FOR 1.3 MILES.  TURN
 JU3938'LEFT FOR 2.6 MILES TO A STORE.  TURN LEFT FOR 0.8 MILE, TURN LEFT
 JU3938'INTO LANE AND FOLLOW LANE FOR 0.6 MILE.  TURN LEFT BEFORE GATE
 JU3938'GATE ACROSS LANE, FOLLOW DRIVE TO SUMMER HOME THROUGH SMALL
 JU3938'PINES AND GATE.  CROSS FIELD IN FRONT OF SUMMER HOME TO POINT
 JU3938'AND STATION.
 JU3938
 JU3938                          STATION RECOVERY (1938)
 JU3938
 JU3938'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JU3938'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.  NO REFERENCE
 JU3938'MARKS WERE FOUND.  THE PRESENT DESCRIPTION IS ADEQUATE.  STATION
 JU3938'IS STAMPED E.
 JU3938
 JU3938                          STATION RECOVERY (1953)
 JU3938
 JU3938'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JU3938'STATION WAS NOT FOUND AFTER THOROUGH SEARCH.  PROBABLY DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0975 ***********************************************************************
 HV0975  DESIGNATION -  E 100
 HV0975  PID         -  HV0975
 HV0975  STATE/COUNTY-  MD/CHARLES
 HV0975  COUNTRY     -  US
 HV0975  USGS QUAD   -  BENEDICT (2016)
 HV0975
 HV0975                         *CURRENT SURVEY CONTROL
 HV0975  ______________________________________________________________________
 HV0975* NAD 83(1986) POSITION- 38 33 12.     (N) 076 44 30.     (W)   SCALED
 HV0975* NAVD 88 ORTHO HEIGHT -    30.453 (meters)       99.91  (feet) ADJUSTED
 HV0975  ______________________________________________________________________
 HV0975  GEOID HEIGHT    -        -33.498 (meters)                     GEOID18
 HV0975  DYNAMIC HEIGHT  -         30.435 (meters)       99.85  (feet) COMP
 HV0975  MODELED GRAVITY -    980,027.3   (mgal)                       NAVD 88
 HV0975
 HV0975  VERT ORDER      -  FIRST     CLASS I
 HV0975
 HV0975.The horizontal coordinates were scaled from a map and have
 HV0975.an estimated accuracy of +/- 6 seconds.
 HV0975
 HV0975.The orthometric height was determined by differential leveling and
 HV0975.adjusted by the NATIONAL GEODETIC SURVEY
 HV0975.in June 1991.
 HV0975
 HV0975.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0975.GEOID18 height accuracy estimate available here.
 HV0975
 HV0975.Click photographs - Photos may exist for this station.
 HV0975
 HV0975.The dynamic height is computed by dividing the NAVD 88
 HV0975.geopotential number by the normal gravity value computed on the
 HV0975.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0975.degrees latitude (g = 980.6199 gals.).
 HV0975
 HV0975.The modeled gravity was interpolated from observed gravity values.
 HV0975
 HV0975;                    North         East    Units  Estimated Accuracy
 HV0975;SPC MD       -    98,460.      422,520.      MT  (+/- 180 meters Scaled)
 HV0975
 HV0975_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH482686(NAD 83)
 HV0975
 HV0975                          SUPERSEDED SURVEY CONTROL
 HV0975
 HV0975  NGVD 29 (11/26/84)   30.716  (m)          100.77   (f) ADJUSTED    1 1
 HV0975
 HV0975.Superseded values are not recommended for survey control.
 HV0975
 HV0975.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0975.See file dsdata.pdf to determine how the superseded data were derived.
 HV0975
 HV0975_MARKER: DB = BENCH MARK DISK
 HV0975_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0975_STAMPING: E 100 1961
 HV0975_MARK LOGO: CGS
 HV0975_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0975+STABILITY: SURFACE MOTION
 HV0975
 HV0975  HISTORY     - Date     Condition        Report By
 HV0975  HISTORY     - 1961     MONUMENTED       CGS
 HV0975  HISTORY     - 1971     GOOD             NGS
 HV0975  HISTORY     - 20020607 MARK NOT FOUND   MDSHA
 HV0975
 HV0975                          STATION DESCRIPTION
 HV0975
 HV0975'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0975'3.2 MI NE FROM HUGHESVILLE.
 HV0975'ABOUT 2.15 MILES EAST ALONG STATE HIGHWAYS 231 AND 381 FROM THE
 HV0975'INTERSECTION OF STATE HIGHWAY 5 AT HUGHESVILLE, THENCE 1.0 MILE
 HV0975'NORTHEAST ALONG STATE HIGHWAY 381, ABOUT 0.3 MILE SOUTHWEST OF
 HV0975'A CONCRETE HIGHWAY BRIDGE OVER SWANSON CREEK AND THE
 HV0975'CHARLES-PRINCE GEORGE COUNTY LINE, 47 FEET SOUTHEAST OF THE
 HV0975'CENTER LINE OF THE HIGHWAY, 119.5 FEET NORTH OF THE NORTH CORNER
 HV0975'OF A BRICK HOUSE, 134 FEET SOUTH AND ACROSS THE HIGHWAY FROM THE
 HV0975'MOST NORTHEASTERLY POST IN A GUARDRAIL, 69 FEET NORTHEAST OF THE
 HV0975'CENTER LINE OF A PRIVATE DRIVEWAY, 2.5 FEET NORTHWEST OF A METAL
 HV0975'WITNESS POST, ABOUT 2 FEET BELOW THE LEVEL OF THE HIGHWAY, AND
 HV0975'SET IN THE TOP OF A CONCRETE POST PROJECTING 8 INCHES.
 HV0975
 HV0975                          STATION RECOVERY (2002)
 HV0975
 HV0975'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0975'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0461 ***********************************************************************
 HU0461  DESIGNATION -  E 105
 HU0461  PID         -  HU0461
 HU0461  STATE/COUNTY-  MD/WICOMICO
 HU0461  COUNTRY     -  US
 HU0461  USGS QUAD   -  SALISBURY (2016)
 HU0461
 HU0461                         *CURRENT SURVEY CONTROL
 HU0461  ______________________________________________________________________
 HU0461* NAD 83(2011) POSITION- 38 19 59.42218(N) 075 36 39.70390(W)   ADJUSTED
 HU0461* NAD 83(2011) ELLIP HT-   -30.473 (meters)        (01/22/24)   ADJUSTED
 HU0461* NAD 83(2011) EPOCH   -  2010.00
 HU0461* NAVD 88 ORTHO HEIGHT -     5.390 (meters)       17.68  (feet) ADJUSTED
 HU0461  ______________________________________________________________________
 HU0461  GEOID HEIGHT    -        -35.863 (meters)                     GEOID18
 HU0461  NAD 83(2011) X  -  1,244,891.001 (meters)                     COMP
 HU0461  NAD 83(2011) Y  - -4,852,407.804 (meters)                     COMP
 HU0461  NAD 83(2011) Z  -  3,934,500.966 (meters)                     COMP
 HU0461  LAPLACE CORR    -         -1.38  (seconds)                    DEFLEC18
 HU0461  DYNAMIC HEIGHT  -          5.387 (meters)       17.67  (feet) COMP
 HU0461  MODELED GRAVITY -    980,002.1   (mgal)                       NAVD 88
 HU0461
 HU0461  VERT ORDER      -  FIRST     CLASS I
 HU0461
 HU0461  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0461  Standards:
 HU0461         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0461            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0461  -------------------------------------------------------------------
 HU0461  NETWORK    0.44   1.29           0.18   0.18   0.66     -0.01917908
 HU0461  -------------------------------------------------------------------
 HU0461  Click here for local accuracies and other accuracy information.
 HU0461
 HU0461.The horizontal coordinates were established by GPS observations
 HU0461.and adjusted by the MD DOT HIGHWAY ADMIN in January 2024.
 HU0461
 HU0461.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0461.been affixed to the stable North American tectonic plate. See 
 HU0461.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0461
 HU0461.The horizontal coordinates are valid at the epoch date displayed above
 HU0461.which is a decimal equivalence of Year/Month/Day.
 HU0461
 HU0461.The orthometric height was determined by differential leveling and
 HU0461.adjusted by the NATIONAL GEODETIC SURVEY
 HU0461.in June 1991.
 HU0461
 HU0461.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0461.GEOID18 height accuracy estimate available here.
 HU0461
 HU0461.Click photographs - Photos may exist for this station.
 HU0461
 HU0461.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0461
 HU0461.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0461
 HU0461.The ellipsoidal height was determined by GPS observations
 HU0461.and is referenced to NAD 83.
 HU0461
 HU0461.The dynamic height is computed by dividing the NAVD 88
 HU0461.geopotential number by the normal gravity value computed on the
 HU0461.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0461.degrees latitude (g = 980.6199 gals.).
 HU0461
 HU0461.The modeled gravity was interpolated from observed gravity values.
 HU0461
 HU0461. The following values were computed from the NAD 83(2011) position.
 HU0461
 HU0461;                    North         East     Units Scale Factor Converg.
 HU0461;SPC MD       -    74,908.974   521,437.381   MT  0.99999439   +0 52 18.4
 HU0461;SPC MD       -   245,763.86  1,710,749.14   sFT  0.99999439   +0 52 18.4
 HU0461;UTM  18      - 4,242,958.909   446,596.681   MT  0.99963512   -0 22 44.4
 HU0461
 HU0461!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0461!SPC MD       -   1.00000478  x   0.99999439  =   0.99999917
 HU0461!UTM  18      -   1.00000478  x   0.99963512  =   0.99963990
 HU0461
 HU0461_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4659642958(NAD 83)
 HU0461
 HU0461                          SUPERSEDED SURVEY CONTROL
 HU0461
 HU0461  NGVD 29 (11/26/84)    5.645  (m)           18.52   (f) ADJUSTED    1 1
 HU0461
 HU0461.Superseded values are not recommended for survey control.
 HU0461
 HU0461.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0461.See file dsdata.pdf to determine how the superseded data were derived.
 HU0461
 HU0461_MARKER: DB = BENCH MARK DISK
 HU0461_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0461_SP_SET: BRIDGE
 HU0461_STAMPING: E 105 1963
 HU0461_MARK LOGO: CGS
 HU0461_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0461_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0461+SATELLITE: SATELLITE OBSERVATIONS - February 26, 2020
 HU0461
 HU0461  HISTORY     - Date     Condition        Report By
 HU0461  HISTORY     - 1963     MONUMENTED       CGS
 HU0461  HISTORY     - 1972     GOOD             NGS
 HU0461  HISTORY     - 20050907 GOOD             GEOCAC
 HU0461  HISTORY     - 20150713 GOOD             MD1380
 HU0461  HISTORY     - 20200226 GOOD             MDSHA
 HU0461
 HU0461                          STATION DESCRIPTION
 HU0461
 HU0461'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0461'2.8 MI SW FROM SALISBURY.
 HU0461'ABOUT 2.75 MILES SOUTHWEST ALONG THE PENN CENTRAL RAILROAD FROM
 HU0461'THE STATION AT SALISBURY, AT THE SOUTHWEST END OF THE SOUTHBOUND
 HU0461'LANE OF THE U.S. HIGHWAY 13 BRIDGE OVER TONYTANK CREEK, SET ON
 HU0461'TOP AND 4 FEET NORTHEAST OF THE SOUTHWEST END OF THE NORTHWEST
 HU0461'CONCRETE BASE FOR THE NORTHWEST RAILING OF THE 262-FOOT-LONG
 HU0461'BRIDGE, ABOUT 70 YARDS NORTHWEST OF THE TRACK, 19.5 FEET NORTHWEST
 HU0461'OF THE CENTER LINE OF THE SOUTHBOUND LANE OF THE HIGHWAY AND
 HU0461'1 FOOT ABOVE THE LEVEL OF THE HIGHWAY.  NOTE-- MARK MAY BE
 HU0461'REACHED BY GOING 0.9 MILE NORTHEAST ALONG THE PENN CENTRAL
 HU0461'RAILROAD FROM THE CROSSING OF MAIN STREET AT FRUITLAND.
 HU0461
 HU0461                          STATION RECOVERY (2005)
 HU0461
 HU0461'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0461'RECOVERED IN GOOD CONDITION.
 HU0461
 HU0461                          STATION RECOVERY (2015)
 HU0461
 HU0461'RECOVERY NOTE BY CITY OF SALISBURY MARYLAND 2015
 HU0461'RECOVERED IN GOOD CONDITION.
 HU0461
 HU0461                          STATION RECOVERY (2020)
 HU0461
 HU0461'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (EBD)
 HU0461'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0491 ***********************************************************************
 HU0491  DESIGNATION -  E 106
 HU0491  PID         -  HU0491
 HU0491  STATE/COUNTY-  MD/SOMERSET
 HU0491  COUNTRY     -  US
 HU0491  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0491
 HU0491                         *CURRENT SURVEY CONTROL
 HU0491  ______________________________________________________________________
 HU0491* NAD 83(1986) POSITION- 38 09 12.     (N) 075 40 52.     (W)   SCALED
 HU0491* NAVD 88 ORTHO HEIGHT -     4.745 (meters)       15.57  (feet) ADJUSTED
 HU0491  ______________________________________________________________________
 HU0491  GEOID HEIGHT    -        -36.075 (meters)                     GEOID18
 HU0491  DYNAMIC HEIGHT  -          4.742 (meters)       15.56  (feet) COMP
 HU0491  MODELED GRAVITY -    979,982.9   (mgal)                       NAVD 88
 HU0491
 HU0491  VERT ORDER      -  FIRST     CLASS I
 HU0491
 HU0491.The horizontal coordinates were scaled from a map and have
 HU0491.an estimated accuracy of +/- 6 seconds.
 HU0491
 HU0491.The orthometric height was determined by differential leveling and
 HU0491.adjusted by the NATIONAL GEODETIC SURVEY
 HU0491.in June 1991.
 HU0491
 HU0491.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0491.GEOID18 height accuracy estimate available here.
 HU0491
 HU0491.Click photographs - Photos may exist for this station.
 HU0491
 HU0491.The dynamic height is computed by dividing the NAVD 88
 HU0491.geopotential number by the normal gravity value computed on the
 HU0491.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0491.degrees latitude (g = 980.6199 gals.).
 HU0491
 HU0491.The modeled gravity was interpolated from observed gravity values.
 HU0491
 HU0491;                    North         East    Units  Estimated Accuracy
 HU0491;SPC MD       -    54,860.      515,600.      MT  (+/- 180 meters Scaled)
 HU0491
 HU0491_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH403230(NAD 83)
 HU0491
 HU0491                          SUPERSEDED SURVEY CONTROL
 HU0491
 HU0491  NGVD 29 (11/26/84)    4.997  (m)           16.39   (f) ADJUSTED    1 1
 HU0491
 HU0491.Superseded values are not recommended for survey control.
 HU0491
 HU0491.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0491.See file dsdata.pdf to determine how the superseded data were derived.
 HU0491
 HU0491_MARKER: DB = BENCH MARK DISK
 HU0491_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0491_STAMPING: E 106 1963
 HU0491_MARK LOGO: CGS
 HU0491_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0491_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0491+STABILITY: SURFACE MOTION
 HU0491
 HU0491  HISTORY     - Date     Condition        Report By
 HU0491  HISTORY     - 1963     MONUMENTED       CGS
 HU0491  HISTORY     - 1972     GOOD             NGS
 HU0491
 HU0491                          STATION DESCRIPTION
 HU0491
 HU0491'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0491'3.6 MI SE FROM PRINCESS ANNE.
 HU0491'2.6 MILES SOUTH ALONG SOMERSET AVENUE AND U.S. HIGHWAY 13 FROM THE
 HU0491'JUNCTION OF STATE HIGHWAY 363 AT PRINCESS ANNE, THENCE 0.95 MILE
 HU0491'SOUTHEAST ALONG THE PENNSYLVANIA RAILROAD, ABOUT 0.4 MILE SOUTHEAST
 HU0491'OF MILEPOST 22, 23.3 FEET NORTHEAST OF NORTHEAST RAIL, 311 FEET
 HU0491'EAST-SOUTHEAST OF CENTER OF CROSSING OF PRIVATE ROAD LEADING
 HU0491'NORTHEAST TO A TWO STORY WHITE FRAME HOUSE, 248 FEET SOUTHEAST OF
 HU0491'A 6-FOOT HIGH WHISTLE POST, 3 1/2 FEET SOUTHEAST OF A TELEPHONE
 HU0491'POLE, 1.5 FEET NORTHWEST OF A STEEL WITNESS POST, 1 1/2 FEET
 HU0491'BELOW LEVEL OF TRACK, AND SET IN THE TOP OF A CONCRETE POST
 HU0491'PROJECTING 3 INCHES.
 HU0491
 HU0491                          STATION RECOVERY (1972)
 HU0491
 HU0491'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0491'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0421 ***********************************************************************
 HU0421  DESIGNATION -  E 107
 HU0421  PID         -  HU0421
 HU0421  STATE/COUNTY-  MD/WICOMICO
 HU0421  COUNTRY     -  US
 HU0421  USGS QUAD   -  DELMAR (2016)
 HU0421
 HU0421                         *CURRENT SURVEY CONTROL
 HU0421  ______________________________________________________________________
 HU0421* NAD 83(1986) POSITION- 38 22 48.     (N) 075 35 19.     (W)   SCALED
 HU0421* NAVD 88 ORTHO HEIGHT -    10.328 (meters)       33.88  (feet) ADJUSTED
 HU0421  ______________________________________________________________________
 HU0421  GEOID HEIGHT    -        -35.804 (meters)                     GEOID18
 HU0421  DYNAMIC HEIGHT  -         10.322 (meters)       33.86  (feet) COMP
 HU0421  MODELED GRAVITY -    980,006.9   (mgal)                       NAVD 88
 HU0421  OBS GRAVITY     -    980,009.0   (mgal)                       GRAV_OBS
 HU0421
 HU0421  VERT ORDER      -  SECOND    CLASS I
 HU0421
 HU0421.The horizontal coordinates were scaled from a map and have
 HU0421.an estimated accuracy of +/- 6 seconds.
 HU0421
 HU0421.The orthometric height was determined by differential leveling and
 HU0421.adjusted by the NATIONAL GEODETIC SURVEY
 HU0421.in December 2004.
 HU0421
 HU0421.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0421.GEOID18 height accuracy estimate available here.
 HU0421
 HU0421.Click photographs - Photos may exist for this station.
 HU0421
 HU0421.The dynamic height is computed by dividing the NAVD 88
 HU0421.geopotential number by the normal gravity value computed on the
 HU0421.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0421.degrees latitude (g = 980.6199 gals.).
 HU0421
 HU0421.The modeled gravity was interpolated from observed gravity values.
 HU0421
 HU0421.The observed gravity was obtained from relative gravimeter ties
 HU0421.to the IGSN71 gravity network.
 HU0421
 HU0421;                    North         East    Units  Estimated Accuracy
 HU0421;SPC MD       -    80,140.      523,320.      MT  (+/- 180 meters Scaled)
 HU0421
 HU0421_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH485481(NAD 83)
 HU0421
 HU0421                          SUPERSEDED SURVEY CONTROL
 HU0421
 HU0421  NAVD 88 (06/15/91)   10.346  (m)           33.94   (f) SUPERSEDED  1 1
 HU0421  NGVD 29 (11/26/84)   10.600  (m)           34.78   (f) ADJUSTED    1 1
 HU0421
 HU0421.Superseded values are not recommended for survey control.
 HU0421
 HU0421.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0421.See file dsdata.pdf to determine how the superseded data were derived.
 HU0421
 HU0421_MARKER: DB = BENCH MARK DISK
 HU0421_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU0421_SP_SET: BRIDGE ABUTMENT
 HU0421_STAMPING: E 107 1963
 HU0421_MARK LOGO: CGS
 HU0421_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0421_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0421_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0421+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2002
 HU0421
 HU0421  HISTORY     - Date     Condition        Report By
 HU0421  HISTORY     - 1963     MONUMENTED       CGS
 HU0421  HISTORY     - 20020220 GOOD             MDSHA
 HU0421
 HU0421                          STATION DESCRIPTION
 HU0421
 HU0421'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0421'0.6 MI N FROM SALISBURY.
 HU0421'0.65 MILE NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HU0421'AT SALISBURY, AT THE OVERPASS OF U.S. HIGHWAY 13 OVER THE
 HU0421'RAILROAD, SET VERTICALLY IN THE NORTHWEST FACE OF THE OVERPASS
 HU0421'ABUTMENT, 29 FEET SOUTHEAST OF SOUTHEAST RAIL OF MAIN TRACK, 3.5
 HU0421'FEET NORTHEAST OF WEST CORNER OF THE ABUTMENT, 2 FEET ABOVE LEVEL
 HU0421'OF TRACK, AND 2.5 FEET ABOVE LEVEL OF GROUND.
 HU0421
 HU0421                          STATION RECOVERY (2002)
 HU0421
 HU0421'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0421'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0546 ***********************************************************************
 HU0546  DESIGNATION -  E 108
 HU0546  PID         -  HU0546
 HU0546  STATE/COUNTY-  MD/WICOMICO
 HU0546  COUNTRY     -  US
 HU0546  USGS QUAD   -  EDEN (2016)
 HU0546
 HU0546                         *CURRENT SURVEY CONTROL
 HU0546  ______________________________________________________________________
 HU0546* NAD 83(1986) POSITION- 38 21 39.1    (N) 075 44 17.7    (W)   HD_HELD2
 HU0546* NAVD 88 ORTHO HEIGHT -     6.218 (meters)       20.40  (feet) ADJUSTED
 HU0546  ______________________________________________________________________
 HU0546  GEOID HEIGHT    -        -35.726 (meters)                     GEOID18
 HU0546  DYNAMIC HEIGHT  -          6.214 (meters)       20.39  (feet) COMP
 HU0546  MODELED GRAVITY -    980,005.5   (mgal)                       NAVD 88
 HU0546
 HU0546  VERT ORDER      -  FIRST     CLASS I
 HU0546
 HU0546.The horizontal coordinates were established by autonomous hand held GPS
 HU0546.observations and have an estimated accuracy of +/- 10 meters.
 HU0546
 HU0546.The orthometric height was determined by differential leveling and
 HU0546.adjusted by the NATIONAL GEODETIC SURVEY
 HU0546.in June 1991.
 HU0546
 HU0546.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0546.GEOID18 height accuracy estimate available here.
 HU0546
 HU0546.Click photographs - Photos may exist for this station.
 HU0546
 HU0546.The dynamic height is computed by dividing the NAVD 88
 HU0546.geopotential number by the normal gravity value computed on the
 HU0546.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0546.degrees latitude (g = 980.6199 gals.).
 HU0546
 HU0546.The modeled gravity was interpolated from observed gravity values.
 HU0546
 HU0546;                    North         East    Units  Estimated Accuracy
 HU0546;SPC MD       -    77,821.      510,273.      MT  (+/- 10 meters HH2 GPS)
 HU0546
 HU0546_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3550246112(NAD 83)
 HU0546
 HU0546                          SUPERSEDED SURVEY CONTROL
 HU0546
 HU0546  NGVD 29 (06/12/91)    6.471  (m)           21.23   (f) ADJUSTED    1 1
 HU0546  NGVD 29 (??/??/87)    6.471  (m)           21.23   (f) SUPERSEDED  1 1
 HU0546
 HU0546.Superseded values are not recommended for survey control.
 HU0546
 HU0546.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0546.See file dsdata.pdf to determine how the superseded data were derived.
 HU0546
 HU0546_MARKER: DB = BENCH MARK DISK
 HU0546_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU0546_SP_SET: BUILDING
 HU0546_STAMPING: E 108 1963
 HU0546_MARK LOGO: CGS
 HU0546_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0546_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0546+SATELLITE: SATELLITE OBSERVATIONS - April 23, 2019
 HU0546
 HU0546  HISTORY     - Date     Condition        Report By
 HU0546  HISTORY     - 1963     MONUMENTED       CGS
 HU0546  HISTORY     - 19900125 GOOD             NGS
 HU0546  HISTORY     - 20050908 GOOD             GEOCAC
 HU0546  HISTORY     - 20190423 GOOD             PROFLN
 HU0546
 HU0546                          STATION DESCRIPTION
 HU0546
 HU0546'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0546'0.8 MI S FROM QUANTICO.
 HU0546'0.8 MILE SOUTH ALONG STATE HIGHWAY 347 FROM THE ST. PHILLIPS
 HU0546'EPISCOPAL CHURCH AT QUANTICO, 0.35 MILE NORTH OF THE JUNCTION OF
 HU0546'STATE HIGHWAY 349 LEADING EAST AND WEST, SET VERTICALLY IN THE
 HU0546'EAST BRICK FACE OF THE QUANTICO  SCHOOL, 1 FOOT SOUTH OF
 HU0546'NORTHEAST CORNER OF BUILDING, 245 FEET WEST OF CENTER LINE OF
 HU0546'HIGHWAY, AND 2 FEET ABOVE LEVEL OF GROUND.
 HU0546
 HU0546                          STATION RECOVERY (1990)
 HU0546
 HU0546'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0546'1.6 KM (0.99 MI) SOUTHERLY ALONG QUANTICO ROAD FROM ITS JUNCTION WITH
 HU0546'CHERRY WALK ROAD IN QUANTICO, SET VERTICALLY IN THE EAST FACE OF THE
 HU0546'WEST SIDE PRIMARY SCHOOL, 0.6 M (1.97 FT) ABOVE THE GROUND SURFACE,
 HU0546'AND 0.3 M (0.98 FT) SOUTH OF THE NORTHEAST CORNER OF THE SCHOOL
 HU0546'BUILDING.
 HU0546
 HU0546                          STATION RECOVERY (2005)
 HU0546
 HU0546'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0546'RECOVERED IN GOOD CONDITION.
 HU0546
 HU0546                          STATION RECOVERY (2019)
 HU0546
 HU0546'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU0546'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1320 ***********************************************************************
 JV1320  DESIGNATION -  E 109 MDSRC
 JV1320  PID         -  JV1320
 JV1320  STATE/COUNTY-  MD/HOWARD
 JV1320  COUNTRY     -  US
 JV1320  USGS QUAD   -  CLARKSVILLE (2016)
 JV1320
 JV1320                         *CURRENT SURVEY CONTROL
 JV1320  ______________________________________________________________________
 JV1320* NAD 83(1986) POSITION- 39 10 26.     (N) 076 52 49.     (W)   SCALED
 JV1320* NAVD 88 ORTHO HEIGHT -   103.402 (meters)      339.24  (feet) ADJUSTED
 JV1320  ______________________________________________________________________
 JV1320  GEOID HEIGHT    -        -32.154 (meters)                     GEOID18
 JV1320  DYNAMIC HEIGHT  -        103.346 (meters)      339.06  (feet) COMP
 JV1320  MODELED GRAVITY -    980,087.9   (mgal)                       NAVD 88
 JV1320
 JV1320  VERT ORDER      -  SECOND    CLASS 0
 JV1320
 JV1320.The horizontal coordinates were scaled from a map and have
 JV1320.an estimated accuracy of +/- 6 seconds.
 JV1320
 JV1320.The orthometric height was determined by differential leveling and
 JV1320.adjusted by the NATIONAL GEODETIC SURVEY
 JV1320.in June 1991.
 JV1320
 JV1320.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1320.GEOID18 height accuracy estimate available here.
 JV1320
 JV1320.Click photographs - Photos may exist for this station.
 JV1320
 JV1320.The dynamic height is computed by dividing the NAVD 88
 JV1320.geopotential number by the normal gravity value computed on the
 JV1320.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1320.degrees latitude (g = 980.6199 gals.).
 JV1320
 JV1320.The modeled gravity was interpolated from observed gravity values.
 JV1320
 JV1320;                    North         East    Units  Estimated Accuracy
 JV1320;SPC MD       -   167,320.      410,350.      MT  (+/- 180 meters Scaled)
 JV1320
 JV1320_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ375377(NAD 83)
 JV1320
 JV1320                          SUPERSEDED SURVEY CONTROL
 JV1320
 JV1320  NGVD 29 (11/26/84)  103.618  (m)          339.95   (f) ADJUSTED    2 0
 JV1320
 JV1320.Superseded values are not recommended for survey control.
 JV1320
 JV1320.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1320.See file dsdata.pdf to determine how the superseded data were derived.
 JV1320
 JV1320_MARKER: DB = BENCH MARK DISK
 JV1320_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1320_STAMPING: E 109 1965 USC AND GS
 JV1320_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1320+STABILITY: SURFACE MOTION
 JV1320
 JV1320  HISTORY     - Date     Condition        Report By
 JV1320  HISTORY     - 1966     MONUMENTED       MDSRC
 JV1320
 JV1320                          STATION DESCRIPTION
 JV1320
 JV1320'DESCRIBED BY MD STATE ROADS COMM 1966
 JV1320'0.6 MI SW FROM SIMPSONVILLE.
 JV1320'ABOUT 0.6 MILE SOUTH ALONG U.S. HIGHWAY 29 FROM THE INTERSECTION
 JV1320'OF STATE HIGHWAY 32 AT SIMPSONVILLE, 45.0 FT. EAST OF THE
 JV1320'CENTERLINE OF THE HIGHWAY, 10 FT. WEST OF A BLAZED 10 INCH OAK
 JV1320'TREE, 3.0 FT. SOUTH OF A METAL WITNESS POST.  SET IN A
 JV1320'CONCRETE POST.  PROJECTING 3 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1193 ***********************************************************************
 JU1193  DESIGNATION -  E 11
 JU1193  PID         -  JU1193
 JU1193  STATE/COUNTY-  MD/KENT
 JU1193  COUNTRY     -  US
 JU1193  USGS QUAD   -  MILLINGTON (2016)
 JU1193
 JU1193                         *CURRENT SURVEY CONTROL
 JU1193  ______________________________________________________________________
 JU1193* NAD 83(1986) POSITION- 39 17 26.     (N) 075 49 34.     (W)   SCALED
 JU1193* NAVD 88 ORTHO HEIGHT -    17.835 (meters)       58.51  (feet) ADJUSTED
 JU1193  ______________________________________________________________________
 JU1193  GEOID HEIGHT    -        -33.631 (meters)                     GEOID18
 JU1193  DYNAMIC HEIGHT  -         17.825 (meters)       58.48  (feet) COMP
 JU1193  MODELED GRAVITY -    980,109.9   (mgal)                       NAVD 88
 JU1193
 JU1193  VERT ORDER      -  SECOND    CLASS 0
 JU1193
 JU1193.The horizontal coordinates were scaled from a map and have
 JU1193.an estimated accuracy of +/- 6 seconds.
 JU1193
 JU1193.The orthometric height was determined by differential leveling and
 JU1193.adjusted by the NATIONAL GEODETIC SURVEY
 JU1193.in June 1991.
 JU1193
 JU1193.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1193.GEOID18 height accuracy estimate available here.
 JU1193
 JU1193.Click photographs - Photos may exist for this station.
 JU1193
 JU1193.The dynamic height is computed by dividing the NAVD 88
 JU1193.geopotential number by the normal gravity value computed on the
 JU1193.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1193.degrees latitude (g = 980.6199 gals.).
 JU1193
 JU1193.The modeled gravity was interpolated from observed gravity values.
 JU1193
 JU1193;                    North         East    Units  Estimated Accuracy
 JU1193;SPC MD       -   180,910.      501,270.      MT  (+/- 180 meters Scaled)
 JU1193
 JU1193_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ287493(NAD 83)
 JU1193
 JU1193                          SUPERSEDED SURVEY CONTROL
 JU1193
 JU1193  NGVD 29 (11/26/84)   18.075  (m)           59.30   (f) ADJUSTED    2 0
 JU1193
 JU1193.Superseded values are not recommended for survey control.
 JU1193
 JU1193.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1193.See file dsdata.pdf to determine how the superseded data were derived.
 JU1193
 JU1193_MARKER: DB = BENCH MARK DISK
 JU1193_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1193_STAMPING: E 11 1935
 JU1193_MARK LOGO: CGS
 JU1193_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1193+STABILITY: SURFACE MOTION
 JU1193
 JU1193  HISTORY     - Date     Condition        Report By
 JU1193  HISTORY     - 1935     MONUMENTED       CGS
 JU1193  HISTORY     - 1964     MARK NOT FOUND   CGS
 JU1193  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JU1193
 JU1193                          STATION DESCRIPTION
 JU1193
 JU1193'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1193'2.4 MI N FROM MILLINGTON.
 JU1193'ORIGINAL DESCRIPTION-- 2.4 MILES NORTH ALONG THE PENNSYLVANIA
 JU1193'RAILROAD FROM THE STATION AT MILLINGTON, KENT COUNTY, 0.4 MILE
 JU1193'NORTH OF MILEPOST 11, AT A DIRT-ROAD CROSSING, 30 FEET NORTH
 JU1193'OF THE CENTERLINE OF THE ROAD, 28 FEET WEST OF THE WEST RAIL,
 JU1193'12 FEET NORTH OF THE SOUTHEAST CORNER OF A FIELD, 12 FEET
 JU1193'NORTH OF A 14-INCH TREE, 3 FEET EAST OF THE FENCE LINE, AND
 JU1193'LEVEL WITH THE TRACK.  A STANDARD DISK, STAMPED E 11 1935 AND
 JU1193'SET IN THE TOP OF A CONCRETE POST.
 JU1193
 JU1193                          STATION RECOVERY (1990)
 JU1193
 JU1193'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1193'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1309 ***********************************************************************
 JV1309  DESIGNATION -  E 110 2
 JV1309  PID         -  JV1309
 JV1309  STATE/COUNTY-  MD/BALTIMORE
 JV1309  COUNTRY     -  US
 JV1309  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1309
 JV1309                         *CURRENT SURVEY CONTROL
 JV1309  ______________________________________________________________________
 JV1309* NAD 83(1986) POSITION- 39 17 49.     (N) 076 31 45.     (W)   SCALED
 JV1309* NAVD 88 ORTHO HEIGHT -    19.695 (meters)       64.62  (feet) POSTED
 JV1309  ______________________________________________________________________
 JV1309  GEOID HEIGHT    -        -32.903 (meters)                     GEOID18
 JV1309  DYNAMIC HEIGHT  -         19.68  (meters)       64.6   (feet) COMP
 JV1309  MODELED GRAVITY -    980,100.2   (mgal)                       NAVD 88
 JV1309
 JV1309  VERT ORDER      -  * POSTED, SEE BELOW
 JV1309
 JV1309.The horizontal coordinates were scaled from a map and have
 JV1309.an estimated accuracy of +/- 6 seconds.
 JV1309
 JV1309.The orthometric height was determined by differential leveling
 JV1309.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV1309
 JV1309.* This is a POSTED BENCH MARK height.
 JV1309
 JV1309.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1309.GEOID18 height accuracy estimate available here.
 JV1309
 JV1309.Click photographs - Photos may exist for this station.
 JV1309
 JV1309.The dynamic height is computed by dividing the NAVD 88
 JV1309.geopotential number by the normal gravity value computed on the
 JV1309.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1309.degrees latitude (g = 980.6199 gals.).
 JV1309
 JV1309.The modeled gravity was interpolated from observed gravity values.
 JV1309
 JV1309;                    North         East    Units  Estimated Accuracy
 JV1309;SPC MD       -   181,080.      440,610.      MT  (+/- 180 meters Scaled)
 JV1309
 JV1309_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ681508(NAD 83)
 JV1309
 JV1309                          SUPERSEDED SURVEY CONTROL
 JV1309
 JV1309  NGVD 29 (11/26/84)   19.938  (m)           65.41   (f) ADJUSTED    1 2
 JV1309
 JV1309.Superseded values are not recommended for survey control.
 JV1309
 JV1309.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1309.See file dsdata.pdf to determine how the superseded data were derived.
 JV1309
 JV1309_MARKER: DB = BENCH MARK DISK
 JV1309_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1309_SP_SET: MEDIAN
 JV1309_STAMPING: E-110-2 1966 USC AND GS
 JV1309_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1309
 JV1309  HISTORY     - Date     Condition        Report By
 JV1309  HISTORY     - 1966     MONUMENTED       MDSRC
 JV1309  HISTORY     - 20140517 MARK NOT FOUND   USPSQD
 JV1309
 JV1309                          STATION DESCRIPTION
 JV1309
 JV1309'DESCRIBED BY MD STATE ROADS COMM 1966
 JV1309'3 MI E FROM BALTIMORE.
 JV1309'STATION IS LOCATED NEAR THE JUNCTION OF NORTH POINT ROAD AND
 JV1309'KANE STREET AND THE BALTIMORE CITY LINE.  IT IS 117.0 FEET EAST
 JV1309'OF THE INTERSECTION OF NORTH POINT ROAD AND KANE STREET, 24.2
 JV1309'FEET SOUTH OF THE CENTERLINE OF THE WEST BOUND LANE OF NORTH
 JV1309'POINT ROAD, 25.6 FEET NORTH OF THE EAST BOUND LANE OF NORTH POINT
 JV1309'ROAD, 2.0 FEET WEST OF A METAL WITNESS POST.  IT IS IN THE CENTER
 JV1309'OF THE MEDIAN STRIP SET FLUSH WITH THE GROUND.
 JV1309
 JV1309                          STATION RECOVERY (2014)
 JV1309
 JV1309'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV1309'THE MEDIAN STRIP ON NORTH POINT BLVD. TURNING LEFT TO KANE STREET
 JV1309'HAVE BEEN REDUCED TO A LONG, 18 INCHES WIDE BY 9 INCHES HIGH CONCRETE
 JV1309'SLAB WITH A LARGE METAL TRAFFIC LIGTH POLE INSTALLED AT THE
 JV1309'POSITION GIVEN FOR THE GEODETIC MARKER LOCATION.  THIS MARKER SHUOLD
 JV1309'BE CONSIDERED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2437 ***********************************************************************
 HV2437  DESIGNATION -  E 111
 HV2437  PID         -  HV2437
 HV2437  STATE/COUNTY-  MD/PRINCE GEORGES
 HV2437  COUNTRY     -  US
 HV2437  USGS QUAD   -  MOUNT VERNON (2019)
 HV2437
 HV2437                         *CURRENT SURVEY CONTROL
 HV2437  ______________________________________________________________________
 HV2437* NAD 83(1986) POSITION- 38 40 13.     (N) 077 00 43.     (W)   SCALED
 HV2437* NAVD 88 ORTHO HEIGHT -    60.129 (meters)      197.27  (feet) ADJUSTED
 HV2437  ______________________________________________________________________
 HV2437  GEOID HEIGHT    -        -32.545 (meters)                     GEOID18
 HV2437  DYNAMIC HEIGHT  -         60.095 (meters)      197.16  (feet) COMP
 HV2437  MODELED GRAVITY -    980,066.5   (mgal)                       NAVD 88
 HV2437
 HV2437  VERT ORDER      -  SECOND    CLASS 0
 HV2437
 HV2437.The horizontal coordinates were scaled from a map and have
 HV2437.an estimated accuracy of +/- 6 seconds.
 HV2437
 HV2437.The orthometric height was determined by differential leveling and
 HV2437.adjusted by the NATIONAL GEODETIC SURVEY
 HV2437.in June 1991.
 HV2437
 HV2437.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2437.GEOID18 height accuracy estimate available here.
 HV2437
 HV2437.Click photographs - Photos may exist for this station.
 HV2437
 HV2437.The dynamic height is computed by dividing the NAVD 88
 HV2437.geopotential number by the normal gravity value computed on the
 HV2437.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2437.degrees latitude (g = 980.6199 gals.).
 HV2437
 HV2437.The modeled gravity was interpolated from observed gravity values.
 HV2437
 HV2437;                    North         East    Units  Estimated Accuracy
 HV2437;SPC MD       -   111,410.      398,960.      MT  (+/- 180 meters Scaled)
 HV2437
 HV2437_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH249821(NAD 83)
 HV2437
 HV2437                          SUPERSEDED SURVEY CONTROL
 HV2437
 HV2437  NGVD 29 (05/01/89)   60.368  (m)          198.06   (f) ADJUSTED    2 0
 HV2437  NGVD 29 (??/??/87)   60.412  (m)          198.20   (f) SUPERSEDED  2 0
 HV2437
 HV2437.Superseded values are not recommended for survey control.
 HV2437
 HV2437.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2437.See file dsdata.pdf to determine how the superseded data were derived.
 HV2437
 HV2437_MARKER: DB = BENCH MARK DISK
 HV2437_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2437_STAMPING: E 111 1966 USCGS
 HV2437_MARK LOGO: MDBCSM
 HV2437_PROJECTION: PROJECTING
 HV2437_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2437+STABILITY: SURFACE MOTION
 HV2437
 HV2437  HISTORY     - Date     Condition        Report By
 HV2437  HISTORY     - 1966     MONUMENTED       MDSRC
 HV2437
 HV2437                          STATION DESCRIPTION
 HV2437
 HV2437'DESCRIBED BY MD STATE ROADS COMM 1966
 HV2437'10 MI N FROM INDIAN HEAD.
 HV2437'STATION IS LOCATED AT THE INTERSECTION OF MARYLAND HIGHWAY
 HV2437'210 AND MARYLAND HIGHWAY 373, 55.0 FEET WEST OF THE CENTERLINE
 HV2437'OF MARYLAND HIGHWAY 210, 31.0 FEET NORTH OF THE CENTERLINE
 HV2437'OF LIVINGSTON ROAD, 29.0 FEET SOUTH OF THE CENTERLINE OF BRYAN
 HV2437'POINT ROAD, 12.6 FEET NORTH OF POWER POLE NUMBER P-8556 SET IN
 HV2437'THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1284 ***********************************************************************
 JV1284  DESIGNATION -  E 112 MDSRC
 JV1284  PID         -  JV1284
 JV1284  STATE/COUNTY-  MD/BALTIMORE
 JV1284  COUNTRY     -  US
 JV1284  USGS QUAD   -  REISTERSTOWN (2016)
 JV1284
 JV1284                         *CURRENT SURVEY CONTROL
 JV1284  ______________________________________________________________________
 JV1284* NAD 83(1986) POSITION- 39 24 53.     (N) 076 46 25.     (W)   SCALED
 JV1284* NAVD 88 ORTHO HEIGHT -   151.219 (meters)      496.12  (feet) ADJUSTED
 JV1284  ______________________________________________________________________
 JV1284  GEOID HEIGHT    -        -32.178 (meters)                     GEOID18
 JV1284  DYNAMIC HEIGHT  -        151.140 (meters)      495.87  (feet) COMP
 JV1284  MODELED GRAVITY -    980,097.0   (mgal)                       NAVD 88
 JV1284
 JV1284  VERT ORDER      -  SECOND    CLASS 0
 JV1284
 JV1284.The horizontal coordinates were scaled from a map and have
 JV1284.an estimated accuracy of +/- 6 seconds.
 JV1284
 JV1284.The orthometric height was determined by differential leveling and
 JV1284.adjusted by the NATIONAL GEODETIC SURVEY
 JV1284.in June 1991.
 JV1284
 JV1284.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1284.GEOID18 height accuracy estimate available here.
 JV1284
 JV1284.Click photographs - Photos may exist for this station.
 JV1284
 JV1284.The dynamic height is computed by dividing the NAVD 88
 JV1284.geopotential number by the normal gravity value computed on the
 JV1284.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1284.degrees latitude (g = 980.6199 gals.).
 JV1284
 JV1284.The modeled gravity was interpolated from observed gravity values.
 JV1284
 JV1284;                    North         East    Units  Estimated Accuracy
 JV1284;SPC MD       -   194,070.      419,500.      MT  (+/- 180 meters Scaled)
 JV1284
 JV1284_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ473643(NAD 83)
 JV1284
 JV1284                          SUPERSEDED SURVEY CONTROL
 JV1284
 JV1284  NGVD 29 (11/26/84)  151.431  (m)          496.82   (f) ADJUSTED    2 0
 JV1284
 JV1284.Superseded values are not recommended for survey control.
 JV1284
 JV1284.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1284.See file dsdata.pdf to determine how the superseded data were derived.
 JV1284
 JV1284_MARKER: DB = BENCH MARK DISK
 JV1284_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1284_STAMPING: E-112 1967 USC AND GS
 JV1284_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1284+STABILITY: SURFACE MOTION
 JV1284
 JV1284  HISTORY     - Date     Condition        Report By
 JV1284  HISTORY     - 1967     MONUMENTED       MDSRC
 JV1284
 JV1284                          STATION DESCRIPTION
 JV1284
 JV1284'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1284'3.8 MI NW FROM PIKESVILLE.
 JV1284'FROM THE BRIDGE OVER THE BALTIMORE BELTWAY PROCEED NORTHWEST
 JV1284'ALONG U.S. 140 (REISTERSTOWN ROAD) FOR 2.8 MILES AND STATION
 JV1284'ON THE WEST SIDE OF U.S. 140.  69.4 FEET WEST OF THE CENTERLINE
 JV1284'OF U.S. 140, 5.5 FEET SOUTH OF A POWER POLE, 4.0 FEET EAST OF
 JV1284'THE EDGE OF BENDIX PARKING LOT AND 6.0 FEET NORTH OF A METAL
 JV1284'WITNESS POST.  A STANDARD DISK SET IN THE TOP OF A CONCRETE POST
 JV1284'SET FLUSH WITH THE GROUND AND STAMPED E-112 1967 U.S.C. AND G.S.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6398 ***********************************************************************
 JV6398  DESIGNATION -  E 113
 JV6398  PID         -  JV6398
 JV6398  STATE/COUNTY-  MD/MONTGOMERY
 JV6398  COUNTRY     -  US
 JV6398  USGS QUAD   -  GAITHERSBURG (2016)
 JV6398
 JV6398                         *CURRENT SURVEY CONTROL
 JV6398  ______________________________________________________________________
 JV6398* NAD 83(1986) POSITION- 39 07 49.     (N) 077 13 07.     (W)   SCALED
 JV6398* NAVD 88 ORTHO HEIGHT -   127.341 (meters)      417.78  (feet) ADJUSTED
 JV6398  ______________________________________________________________________
 JV6398  GEOID HEIGHT    -        -31.741 (meters)                     GEOID18
 JV6398  DYNAMIC HEIGHT  -        127.275 (meters)      417.57  (feet) COMP
 JV6398  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 JV6398
 JV6398  VERT ORDER      -  FIRST     CLASS 0
 JV6398
 JV6398.The horizontal coordinates were scaled from a map and have
 JV6398.an estimated accuracy of +/- 6 seconds.
 JV6398
 JV6398.The orthometric height was determined by differential leveling and
 JV6398.adjusted by the NATIONAL GEODETIC SURVEY
 JV6398.in July 1994.
 JV6398
 JV6398.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6398.GEOID18 height accuracy estimate available here.
 JV6398
 JV6398.Click photographs - Photos may exist for this station.
 JV6398
 JV6398.The dynamic height is computed by dividing the NAVD 88
 JV6398.geopotential number by the normal gravity value computed on the
 JV6398.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6398.degrees latitude (g = 980.6199 gals.).
 JV6398
 JV6398.The modeled gravity was interpolated from observed gravity values.
 JV6398
 JV6398;                    North         East    Units  Estimated Accuracy
 JV6398;SPC MD       -   162,490.      381,100.      MT  (+/- 180 meters Scaled)
 JV6398
 JV6398_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ082335(NAD 83)
 JV6398
 JV6398                          SUPERSEDED SURVEY CONTROL
 JV6398
 JV6398  NGVD 29 (??/??/92)  127.55   (m)          418.5    (f) COMPUTED    1 0
 JV6398
 JV6398.Superseded values are not recommended for survey control.
 JV6398
 JV6398.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6398.See file dsdata.pdf to determine how the superseded data were derived.
 JV6398
 JV6398_MARKER: DB = BENCH MARK DISK
 JV6398_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV6398_STAMPING: E 113 1968
 JV6398_MARK LOGO: CGS
 JV6398_PROJECTION: FLUSH
 JV6398_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6398_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6398_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6398+SATELLITE: SATELLITE OBSERVATIONS - September 12, 1997
 JV6398_ROD/PIPE-DEPTH: 12.5 meters
 JV6398
 JV6398  HISTORY     - Date     Condition        Report By
 JV6398  HISTORY     - 1968     MONUMENTED       CGS
 JV6398  HISTORY     - 19741015 GOOD             NGS
 JV6398  HISTORY     - 19900620 GOOD             NGS
 JV6398  HISTORY     - 19911015 GOOD             NGS
 JV6398  HISTORY     - 19970912 GOOD             NGS
 JV6398
 JV6398                          STATION DESCRIPTION
 JV6398
 JV6398'DESCRIBED BY COAST AND GEODETIC SURVEY 1968
 JV6398'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6398'TECHNOLOGY GROUNDS, ABOUT 0.1 MI (0.16 KM) SOUTH OF THE INTERSECTION
 JV6398'OF SOUTH DRIVE AND CENTER DRIVE, 84 FT (25.60 M) NORTHWEST OF THE
 JV6398'CENTER OF THE JUNCTION OF A DRIVEWAY LEADING EAST TO BUILDING 245 AND
 JV6398'A SMALL BUILDING WITH A LARGE HIGH STACK, 66.5 FT (20.27 M) WEST OF
 JV6398'THE WEST CURB OF CENTER DRIVE, 19 FT (5.79 M) SOUTH OF A 24-INCH OAK
 JV6398'TREE, 20 FT (6.10 M) NORTH OF A 24-INCH POPULAR TREE WITH TWO TRUNKS,
 JV6398'AND ABOUT 2 FT (0.61 M) BELOW THE LEVEL OW CENTER DRIVE.
 JV6398'NOTE--ACCESS IS THROUGH A 6-INCH METAL COVER.
 JV6398
 JV6398                          STATION RECOVERY (1974)
 JV6398
 JV6398'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 JV6398'RECOVERED IN GOOD CONDITION.
 JV6398
 JV6398                          STATION RECOVERY (1990)
 JV6398
 JV6398'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6398'RECOVERED IN GOOD CONDITION.
 JV6398
 JV6398                          STATION RECOVERY (1991)
 JV6398
 JV6398'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV6398'RECOVERED IN GOOD CONDITION.
 JV6398
 JV6398                          STATION RECOVERY (1997)
 JV6398
 JV6398'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (RLA)
 JV6398'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1140 ***********************************************************************
 JU1140  DESIGNATION -  E 114
 JU1140  PID         -  JU1140
 JU1140  STATE/COUNTY-  MD/CECIL
 JU1140  COUNTRY     -  US
 JU1140  USGS QUAD   -  CECILTON (2016)
 JU1140
 JU1140                         *CURRENT SURVEY CONTROL
 JU1140  ______________________________________________________________________
 JU1140* NAD 83(1986) POSITION- 39 28 33.8    (N) 075 50 54.1    (W)   HD_HELD2
 JU1140* NAVD 88 ORTHO HEIGHT -    21.900 (meters)       71.85  (feet) ADJUSTED
 JU1140  ______________________________________________________________________
 JU1140  GEOID HEIGHT    -        -33.405 (meters)                     GEOID18
 JU1140  DYNAMIC HEIGHT  -         21.889 (meters)       71.81  (feet) COMP
 JU1140  MODELED GRAVITY -    980,122.1   (mgal)                       NAVD 88
 JU1140
 JU1140  VERT ORDER      -  FIRST     CLASS II
 JU1140
 JU1140.The horizontal coordinates were established by autonomous hand held GPS
 JU1140.observations and have an estimated accuracy of +/- 10 meters.
 JU1140
 JU1140.The orthometric height was determined by differential leveling and
 JU1140.adjusted by the NATIONAL GEODETIC SURVEY
 JU1140.in June 1991.
 JU1140
 JU1140.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1140.GEOID18 height accuracy estimate available here.
 JU1140
 JU1140.Click photographs - Photos may exist for this station.
 JU1140
 JU1140.The dynamic height is computed by dividing the NAVD 88
 JU1140.geopotential number by the normal gravity value computed on the
 JU1140.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1140.degrees latitude (g = 980.6199 gals.).
 JU1140
 JU1140.The modeled gravity was interpolated from observed gravity values.
 JU1140
 JU1140;                    North         East    Units  Estimated Accuracy
 JU1140;SPC MD       -   201,481.      499,088.      MT  (+/- 10 meters HH2 GPS)
 JU1140
 JU1140_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2703369950(NAD 83)
 JU1140
 JU1140                          SUPERSEDED SURVEY CONTROL
 JU1140
 JU1140  NGVD 29 (11/26/84)   22.142  (m)           72.64   (f) ADJUSTED    1 2
 JU1140
 JU1140.Superseded values are not recommended for survey control.
 JU1140
 JU1140.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1140.See file dsdata.pdf to determine how the superseded data were derived.
 JU1140
 JU1140_MARKER: DB = BENCH MARK DISK
 JU1140_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JU1140_STAMPING: E 114 1971
 JU1140_MARK LOGO: CGS
 JU1140_PROJECTION: FLUSH
 JU1140_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1140
 JU1140  HISTORY     - Date     Condition        Report By
 JU1140  HISTORY     - 1971     MONUMENTED       NGS
 JU1140  HISTORY     - 19881117 MARK NOT FOUND   USPSQD
 JU1140  HISTORY     - 20120119 GOOD             MD-015
 JU1140  HISTORY     - 20140605 GOOD             ARCSHE
 JU1140  HISTORY     - 20190701 GOOD             MDSHA
 JU1140
 JU1140                          STATION DESCRIPTION
 JU1140
 JU1140'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1140'3.8 MI SW FROM CHESAPEAKE CITY.
 JU1140'ABOUT 3.75 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1140'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1140'DELAWARE CANAL AT CHESAPEAKE CITY, 0.1 MILE NORTHEAST OF THE
 JU1140'JUNCTION OF A ROAD THAT LEADS SOUTH TO A FARMHOUSE, ON THE OUTSIDE
 JU1140'OF A CURVE IN THE HIGHWAY, 68 FEET SOUTHEAST OF THE CENTER LINE
 JU1140'OF THE HIGHWAY, 94 FEET NORTHEAST OF A CORNER FENCE POST, 20
 JU1140'FEET SOUTH OF POWER POLE NUMBER 4830, 1 FOOT NORTHWEST OF A WOODEN
 JU1140'FENCE, 1.6 FEET SOUTHWEST OF A METAL WITNESS POST, ABOUT 1 FOOT
 JU1140'ABOVE THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A COPPER
 JU1140'COATED ROD WHICH IS LEVEL WITH THE SURFACE OF THE GROUND AND IS
 JU1140'PROTECTED BY A 5-INCH METAL PIPE THAT PROJECTS 1 INCH.  THE ROD
 JU1140'WAS DRIVEN TO REFUSAL AT A DEPTH OF 78 1/2 FEET.
 JU1140
 JU1140                          STATION RECOVERY (1988)
 JU1140
 JU1140'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1140'MARK NOT FOUND.
 JU1140
 JU1140                          STATION RECOVERY (2012)
 JU1140
 JU1140'RECOVERY NOTE BY CECIL COUNTY MARYLAND 2012 (DRB)
 JU1140'MARK WAS ABOUT 1 INCH BELOW SOIL.
 JU1140
 JU1140                          STATION RECOVERY (2014)
 JU1140
 JU1140'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JU1140'RECOVERED IN GOOD CONDITION.
 JU1140
 JU1140                          STATION RECOVERY (2019)
 JU1140
 JU1140'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (WAC)
 JU1140'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0266 ***********************************************************************
 JV0266  DESIGNATION -  E 115
 JV0266  PID         -  JV0266
 JV0266  STATE/COUNTY-  MD/KENT
 JV0266  COUNTRY     -  US
 JV0266  USGS QUAD   -  BETTERTON (2017)
 JV0266
 JV0266                         *CURRENT SURVEY CONTROL
 JV0266  ______________________________________________________________________
 JV0266* NAD 83(1986) POSITION- 39 17 48.4    (N) 076 04 08.1    (W)   HD_HELD2
 JV0266* NAVD 88 ORTHO HEIGHT -    22.725 (meters)       74.56  (feet) ADJUSTED
 JV0266  ______________________________________________________________________
 JV0266  GEOID HEIGHT    -        -33.345 (meters)                     GEOID18
 JV0266  DYNAMIC HEIGHT  -         22.714 (meters)       74.52  (feet) COMP
 JV0266  MODELED GRAVITY -    980,113.8   (mgal)                       NAVD 88
 JV0266
 JV0266  VERT ORDER      -  FIRST     CLASS II
 JV0266
 JV0266.The horizontal coordinates were established by autonomous hand held GPS
 JV0266.observations and have an estimated accuracy of +/- 10 meters.
 JV0266
 JV0266.The orthometric height was determined by differential leveling and
 JV0266.adjusted by the NATIONAL GEODETIC SURVEY
 JV0266.in June 1991.
 JV0266
 JV0266.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0266.GEOID18 height accuracy estimate available here.
 JV0266
 JV0266.Click photographs - Photos may exist for this station.
 JV0266
 JV0266.The dynamic height is computed by dividing the NAVD 88
 JV0266.geopotential number by the normal gravity value computed on the
 JV0266.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0266.degrees latitude (g = 980.6199 gals.).
 JV0266
 JV0266.The modeled gravity was interpolated from observed gravity values.
 JV0266
 JV0266;                    North         East    Units  Estimated Accuracy
 JV0266;SPC MD       -   181,362.      480,315.      MT  (+/- 10 meters HH2 GPS)
 JV0266
 JV0266_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0782750255(NAD 83)
 JV0266
 JV0266                          SUPERSEDED SURVEY CONTROL
 JV0266
 JV0266  NGVD 29 (11/26/84)   22.966  (m)           75.35   (f) ADJUSTED    1 2
 JV0266
 JV0266.Superseded values are not recommended for survey control.
 JV0266
 JV0266.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0266.See file dsdata.pdf to determine how the superseded data were derived.
 JV0266
 JV0266_MARKER: DB = BENCH MARK DISK
 JV0266_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0266+WITH SETTING: INTO GROUND
 JV0266_STAMPING: E 115 1971
 JV0266_MARK LOGO: CGS
 JV0266_PROJECTION: FLUSH
 JV0266_MAGNETIC: I = MARKER IS A STEEL ROD
 JV0266_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0266
 JV0266  HISTORY     - Date     Condition        Report By
 JV0266  HISTORY     - 1971     MONUMENTED       NGS
 JV0266  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JV0266  HISTORY     - 20250416 GOOD             PROFLN
 JV0266
 JV0266                          STATION DESCRIPTION
 JV0266
 JV0266'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0266'2.7 MI SW FROM STILL POND.
 JV0266'ABOUT 0.9 MILE SOUTH ALONG STATE HIGHWAY 292 FROM THE JUNCTION
 JV0266'OF STATE HIGHWAY 566 AT STILL POND, THENCE 1.8 MILES SOUTHWEST
 JV0266'ALONG STATE HIGHWAY 298, NEAR THE NORTHEAST CORNER OF A CEMETERY,
 JV0266'0.3 MILE SOUTHWEST OF THE JUNCTION OF STATE HIGHWAY 261
 JV0266'LEADING SOUTHEASTERLY, 52 FEET SOUTH OF THE CENTER LINE OF
 JV0266'THE HIGHWAY, 33 FEET EAST OF THE CENTER LINE OF A DRIVEWAY
 JV0266'TO A RESIDENCE, 13.7 FEET EAST OF THE SOUTHEAST CORNER OF A
 JV0266'CEMETERY, 1.1 FEET WEST OF A BOARD FENCE ALONG THE WEST SIDE
 JV0266'OF THE CEMETERY, 0.9 FOOT SOUTH OF A METAL WITNESS POST, ABOUT
 JV0266'LEVEL WITH THE HIGHWAY, AND ON THE TOP OF A 4 FOOT COPPER
 JV0266'COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE
 JV0266'DISK IS 1 INCH BELOW THE LEVEL OF THE GROUND AND ENCASED IN A
 JV0266'4 INCH STEEL PIPE THAT IS FLUSH WITH THE GROUND.
 JV0266
 JV0266                          STATION RECOVERY (1990)
 JV0266
 JV0266'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0266'MARK NOT FOUND.
 JV0266
 JV0266                          STATION RECOVERY (2025)
 JV0266
 JV0266'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0266'THE MARK IS AT THE NORTHEAST CORNER OF CECIL BURIAL GROUND, 20 FT (6.1
 JV0266'M) WEST OF THE EASTERLY BOARD FENCE, 19 FT (5.8 M) SOUTH OF THE
 JV0266'NORTHERLY BOARD FENCE, 13 FT (4.0 M) WESTERLY OF A COMMEMORATIVE
 JV0266'PLAQUE IN A BOULDER, RIGHT AGAINST THE SOUTH SIDE OF A WITNESS POST
 JV0266'WITH OLD WHITE SIGN, ABOUT 0.5 FT (15 CM) ABOVE THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1867 ***********************************************************************
 JU1867  DESIGNATION -  E 118
 JU1867  PID         -  JU1867
 JU1867  STATE/COUNTY-  MD/CECIL
 JU1867  COUNTRY     -  US
 JU1867  USGS QUAD   -  ELKTON (2016)
 JU1867
 JU1867                         *CURRENT SURVEY CONTROL
 JU1867  ______________________________________________________________________
 JU1867* NAD 83(1986) POSITION- 39 36 24.     (N) 075 51 04.     (W)   SCALED
 JU1867* NAVD 88 ORTHO HEIGHT -    10.575 (meters)       34.69  (feet) ADJUSTED
 JU1867  ______________________________________________________________________
 JU1867  GEOID HEIGHT    -        -33.158 (meters)                     GEOID18
 JU1867  DYNAMIC HEIGHT  -         10.570 (meters)       34.68  (feet) COMP
 JU1867  MODELED GRAVITY -    980,139.0   (mgal)                       NAVD 88
 JU1867
 JU1867  VERT ORDER      -  FIRST     CLASS I
 JU1867
 JU1867.The horizontal coordinates were scaled from a map and have
 JU1867.an estimated accuracy of +/- 6 seconds.
 JU1867
 JU1867.The orthometric height was determined by differential leveling and
 JU1867.adjusted by the NATIONAL GEODETIC SURVEY
 JU1867.in June 1991.
 JU1867
 JU1867.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1867.GEOID18 height accuracy estimate available here.
 JU1867
 JU1867.Click photographs - Photos may exist for this station.
 JU1867
 JU1867.The dynamic height is computed by dividing the NAVD 88
 JU1867.geopotential number by the normal gravity value computed on the
 JU1867.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1867.degrees latitude (g = 980.6199 gals.).
 JU1867
 JU1867.The modeled gravity was interpolated from observed gravity values.
 JU1867
 JU1867;                    North         East    Units  Estimated Accuracy
 JU1867;SPC MD       -   215,980.      498,670.      MT  (+/- 180 meters Scaled)
 JU1867
 JU1867_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ269844(NAD 83)
 JU1867
 JU1867                          SUPERSEDED SURVEY CONTROL
 JU1867
 JU1867  NGVD 29 (11/26/84)   10.812  (m)           35.47   (f) ADJUSTED    1 1
 JU1867
 JU1867.Superseded values are not recommended for survey control.
 JU1867
 JU1867.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1867.See file dsdata.pdf to determine how the superseded data were derived.
 JU1867
 JU1867_MARKER: DB = BENCH MARK DISK
 JU1867_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JU1867_SP_SET: BRIDGE ABUTMENT
 JU1867_STAMPING: E 118 1971
 JU1867_MARK LOGO: CGS
 JU1867_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1867
 JU1867  HISTORY     - Date     Condition        Report By
 JU1867  HISTORY     - 1971     MONUMENTED       NGS
 JU1867
 JU1867                          STATION DESCRIPTION
 JU1867
 JU1867'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1867'1.3 MI W FROM ELKTON.
 JU1867'ABOUT 1.3 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE JUNCTION OF
 JU1867'U.S. HIGHWAY 213 AT ELKTON, ABOUT 0.15 MILE EAST OF THE JUNCTION
 JU1867'OF STATE HIGHWAY 7 LEADING WEST AND STATE HIGHWAY 279 LEADING
 JU1867'NORTH, 17 FEET SOUTH OF THE CENTER LINE OF THE NORTH LANES OF
 JU1867'THE HIGHWAY, SET IN THE TOP OF THE SOUTH END OF THE WEST CONCRETE
 JU1867'ABUTMENT OF THE MORE NORTHERLY OF TWO HIGHWAY BRIDGES OVER LITTLE
 JU1867'ELK CREEK, 1.5 FEET EAST OF THE WEST END OF THE CONCRETE WALKWAY
 JU1867'ON THE BRIDGE, 1.0 FOOT NORTH OF THE NORTH EDGE OF A 4-FOOT HIGH
 JU1867'CONCRETE POST IN A GUARDRAIL ON THE SOUTH SIDE OF THE BRIDGE,
 JU1867'AND ABOUT 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU2497 ***********************************************************************
 JU2497  DESIGNATION -  E 118 RESET
 JU2497  PID         -  JU2497
 JU2497  STATE/COUNTY-  MD/CECIL
 JU2497  COUNTRY     -  US
 JU2497  USGS QUAD   -  ELKTON (2016)
 JU2497
 JU2497                         *CURRENT SURVEY CONTROL
 JU2497  ______________________________________________________________________
 JU2497* NAD 83(1986) POSITION- 39 36 24.2    (N) 075 51 02.1    (W)   HD_HELD2
 JU2497* NAVD 88 ORTHO HEIGHT -     9.947 (meters)       32.63  (feet) ADJUSTED
 JU2497  ______________________________________________________________________
 JU2497  GEOID HEIGHT    -        -33.157 (meters)                     GEOID18
 JU2497  DYNAMIC HEIGHT  -          9.942 (meters)       32.62  (feet) COMP
 JU2497  MODELED GRAVITY -    980,139.1   (mgal)                       NAVD 88
 JU2497
 JU2497  VERT ORDER      -  FIRST     CLASS II
 JU2497
 JU2497.The horizontal coordinates were established by autonomous hand held GPS
 JU2497.observations and have an estimated accuracy of +/- 10 meters.
 JU2497
 JU2497.The orthometric height was determined by differential leveling and
 JU2497.adjusted by the NATIONAL GEODETIC SURVEY
 JU2497.in July 2019.
 JU2497
 JU2497.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU2497.GEOID18 height accuracy estimate available here.
 JU2497
 JU2497.Click photographs - Photos may exist for this station.
 JU2497
 JU2497.The dynamic height is computed by dividing the NAVD 88
 JU2497.geopotential number by the normal gravity value computed on the
 JU2497.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU2497.degrees latitude (g = 980.6199 gals.).
 JU2497
 JU2497.The modeled gravity was interpolated from observed gravity values.
 JU2497
 JU2497;                    North         East    Units  Estimated Accuracy
 JU2497;SPC MD       -   215,986.      498,714.      MT  (+/- 10 meters HH2 GPS)
 JU2497
 JU2497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2697984454(NAD 83)
 JU2497
 JU2497                          SUPERSEDED SURVEY CONTROL
 JU2497
 JU2497  NGVD 29 (??/??/??)   10.21   (m)           33.5    (f) RESET       3  
 JU2497
 JU2497.Superseded values are not recommended for survey control.
 JU2497
 JU2497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU2497.See file dsdata.pdf to determine how the superseded data were derived.
 JU2497
 JU2497_MARKER: DV = VERTICAL CONTROL DISK
 JU2497_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU2497_STAMPING: E 118 RESET 1979
 JU2497_MARK LOGO: NGS
 JU2497_PROJECTION: FLUSH
 JU2497_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU2497+STABILITY: SURFACE MOTION
 JU2497_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU2497+SATELLITE: SATELLITE OBSERVATIONS - October 01, 2025
 JU2497
 JU2497  HISTORY     - Date     Condition        Report By
 JU2497  HISTORY     - 1979     MONUMENTED       NGS
 JU2497  HISTORY     - 19910216 GOOD             USPSQD
 JU2497  HISTORY     - 20140821 GOOD             JARICE
 JU2497  HISTORY     - 20251001 GOOD             MDSHA
 JU2497
 JU2497                          STATION DESCRIPTION
 JU2497
 JU2497'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JU2497'1.3 MI W FROM ELKTON.
 JU2497'ABOUT 1.35 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE JUNCTION OF
 JU2497'U.S. HIGHWAY 213 AT ELKTON, 56 FEET NW OF THE FIRST BRIDGE
 JU2497'EXPANTION JOINT WHERE IT CROSSES THE NORTH SIDEWALK, 27 FEET
 JU2497'NORTH OF THE CENTER OF THE WEST BOUND LANE OF U.S. HWY 40, 7.5
 JU2497'FEET WNW OF A HWY WARNING LIGHTPOLE AND 6 FEET NORTH OF THE NORTH
 JU2497'GUARDRAIL. IT IS WEST OF THE MOST WESTERLY ONE OF TWO HIGHWAY
 JU2497'BRIDGES. A DISK SET INTO THE TOP OF A CONCRETE POST FLUSH WITH THE
 JU2497'GROUND. 1 FOOT BELOW THE ROAD. 1.8 FT NORTH OF A WITNESS POST.
 JU2497
 JU2497                          STATION RECOVERY (1991)
 JU2497
 JU2497'RECOVERY NOTE BY US POWER SQUADRON 1991 (BJD)
 JU2497'RECOVERED IN GOOD CONDITION.
 JU2497
 JU2497                          STATION RECOVERY (2014)
 JU2497
 JU2497'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JU2497'RECOVERED AS DESCRIBED.
 JU2497
 JU2497                          STATION RECOVERY (2025)
 JU2497
 JU2497'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 JU2497'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0613 ***********************************************************************
 HU0613  DESIGNATION -  E 119
 HU0613  PID         -  HU0613
 HU0613  STATE/COUNTY-  MD/WICOMICO
 HU0613  COUNTRY     -  US
 HU0613  USGS QUAD   -  HEBRON (2016)
 HU0613
 HU0613                         *CURRENT SURVEY CONTROL
 HU0613  ______________________________________________________________________
 HU0613* NAD 83(1986) POSITION- 38 24 40.     (N) 075 38 49.     (W)   SCALED
 HU0613* NAVD 88 ORTHO HEIGHT -    13.368 (meters)       43.86  (feet) ADJUSTED
 HU0613  ______________________________________________________________________
 HU0613  GEOID HEIGHT    -        -35.726 (meters)                     GEOID18
 HU0613  DYNAMIC HEIGHT  -         13.359 (meters)       43.83  (feet) COMP
 HU0613  MODELED GRAVITY -    980,009.9   (mgal)                       NAVD 88
 HU0613
 HU0613  VERT ORDER      -  FIRST     CLASS II
 HU0613
 HU0613.The horizontal coordinates were scaled from a map and have
 HU0613.an estimated accuracy of +/- 6 seconds.
 HU0613
 HU0613.The orthometric height was determined by differential leveling and
 HU0613.adjusted by the NATIONAL GEODETIC SURVEY
 HU0613.in June 1991.
 HU0613
 HU0613.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0613.GEOID18 height accuracy estimate available here.
 HU0613
 HU0613.Click photographs - Photos may exist for this station.
 HU0613
 HU0613.The dynamic height is computed by dividing the NAVD 88
 HU0613.geopotential number by the normal gravity value computed on the
 HU0613.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0613.degrees latitude (g = 980.6199 gals.).
 HU0613
 HU0613.The modeled gravity was interpolated from observed gravity values.
 HU0613
 HU0613;                    North         East    Units  Estimated Accuracy
 HU0613;SPC MD       -    83,510.      518,170.      MT  (+/- 180 meters Scaled)
 HU0613
 HU0613_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH435516(NAD 83)
 HU0613
 HU0613                          SUPERSEDED SURVEY CONTROL
 HU0613
 HU0613  NGVD 29 (11/26/84)   13.612  (m)           44.66   (f) ADJUSTED    1 2
 HU0613
 HU0613.Superseded values are not recommended for survey control.
 HU0613
 HU0613.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0613.See file dsdata.pdf to determine how the superseded data were derived.
 HU0613
 HU0613_MARKER: DB = BENCH MARK DISK
 HU0613_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU0613+WITH SETTING: INTO GROUND
 HU0613_STAMPING: E 119 1971
 HU0613_MARK LOGO: CGS
 HU0613_PROJECTION: RECESSED 3 CENTIMETERS
 HU0613_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0613_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0613+SATELLITE: SATELLITE OBSERVATIONS - February 22, 2022
 HU0613
 HU0613  HISTORY     - Date     Condition        Report By
 HU0613  HISTORY     - 1971     MONUMENTED       NGS
 HU0613  HISTORY     - 20220222 GOOD             MDSHA
 HU0613
 HU0613                          STATION DESCRIPTION
 HU0613
 HU0613'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0613'2.6 MI SE FROM HEBRON.
 HU0613'ABOUT 1.6 MILES EAST ALONG STATE HIGHWAY 670 FROM THE POST OFFICE
 HU0613'AT HEBRON, THENCE 0.95 MILE SOUTHEAST ALONG U.S. HIGHWAY 50, 272
 HU0613'FEET NORTH OF A LARGE TWO STORY HOUSE WITH SHINGLE SIDING, 45.7
 HU0613'FEET SOUTH OF THE CENTER LINE OF THE SOUTH LANE OF U.S. HIGHWAY
 HU0613'50, 17 1/2 FEET EAST OF A 24 INCH CEDAR TREE, 13 1/2 FEET
 HU0613'SOUTHWEST OF A BASE OF A GUY WIRE FOR A TELEPHONE POLE, 10 FEET
 HU0613'WEST OF TELEPHONE POLE NO. 1370, 1.4 FEET NORTH OF A METAL
 HU0613'WITNESS POST, 2 FEET BELOW THE LEVEL OF THE HIGHWAY, ON THE TOP
 HU0613'OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL
 HU0613'BASE PLATE.  THE DISK IS 2 INCHES BELOW THE LEVEL OF THE GROUND
 HU0613'AND PROTECTED BY A 4 INCH PIPE THAT IS ONE INCH BELOW THE LEVEL
 HU0613'OF THE GROUND.
 HU0613
 HU0613                          STATION RECOVERY (2022)
 HU0613
 HU0613'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (WAC)
 HU0613'THE MARK IS LOCATED 11.3 FT (3.4 M) NORTHWEST OF C AND P TELEPHONE
 HU0613'POLE NO. 1370, 13.3 FT (4.1 M) SOUTHWEST OF GUY POLE ANCHOR EXTENDING
 HU0613'NORTH FROM SAID TELEPHONE POLE, 42.3 FT (12.9 M) SOUTHWEST OF
 HU0613'SOUTHERNMOST POST OF ROAD SIGN NOTING WHITE LOWE ROAD AND STANTON
 HU0613'AVENUE, 18.5 FT (5.6 M) EAST OF CEDAR STUMP, 5.0 FT (1.5 M) NORTH OF
 HU0613'POST AND BOARD FENCE AND 22.6 FT (6.9 M) SOUTH OF EDGE OF PAVE OF
 HU0613'EASTERNMOST LANES OF US 50.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1853 ***********************************************************************
 JV1853  DESIGNATION -  E 12
 JV1853  PID         -  JV1853
 JV1853  STATE/COUNTY-  MD/FREDERICK
 JV1853  COUNTRY     -  US
 JV1853  USGS QUAD   -  WOODSBORO (2016)
 JV1853
 JV1853                         *CURRENT SURVEY CONTROL
 JV1853  ______________________________________________________________________
 JV1853* NAD 83(1986) POSITION- 39 30 59.8    (N) 077 19 33.4    (W)   HD_HELD2
 JV1853* NAVD 88 ORTHO HEIGHT -   115.291 (meters)      378.25  (feet) ADJUSTED
 JV1853  ______________________________________________________________________
 JV1853  GEOID HEIGHT    -        -32.819 (meters)                     GEOID18
 JV1853  DYNAMIC HEIGHT  -        115.229 (meters)      378.05  (feet) COMP
 JV1853  MODELED GRAVITY -    980,088.0   (mgal)                       NAVD 88
 JV1853
 JV1853  VERT ORDER      -  SECOND    CLASS 0
 JV1853
 JV1853.The horizontal coordinates were established by autonomous hand held GPS
 JV1853.observations and have an estimated accuracy of +/- 10 meters.
 JV1853
 JV1853.The orthometric height was determined by differential leveling and
 JV1853.adjusted by the NATIONAL GEODETIC SURVEY
 JV1853.in June 1991.
 JV1853
 JV1853.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1853.GEOID18 height accuracy estimate available here.
 JV1853
 JV1853.Click photographs - Photos may exist for this station.
 JV1853
 JV1853.The dynamic height is computed by dividing the NAVD 88
 JV1853.geopotential number by the normal gravity value computed on the
 JV1853.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1853.degrees latitude (g = 980.6199 gals.).
 JV1853
 JV1853.The modeled gravity was interpolated from observed gravity values.
 JV1853
 JV1853;                    North         East    Units  Estimated Accuracy
 JV1853;SPC MD       -   205,409.      371,971.      MT  (+/- 10 meters HH2 GPS)
 JV1853
 JV1853_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0005476691(NAD 83)
 JV1853
 JV1853                          SUPERSEDED SURVEY CONTROL
 JV1853
 JV1853  NGVD 29 (11/26/84)  115.504  (m)          378.95   (f) ADJUSTED    2 0
 JV1853
 JV1853.Superseded values are not recommended for survey control.
 JV1853
 JV1853.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1853.See file dsdata.pdf to determine how the superseded data were derived.
 JV1853
 JV1853_MARKER: DB = BENCH MARK DISK
 JV1853_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1853_STAMPING: E 12 1935
 JV1853_MARK LOGO: CGS
 JV1853_PROJECTION: FLUSH
 JV1853_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1853+STABILITY: SURFACE MOTION
 JV1853_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1853+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2020
 JV1853
 JV1853  HISTORY     - Date     Condition        Report By
 JV1853  HISTORY     - 1935     MONUMENTED       CGS
 JV1853  HISTORY     - 20150410 GOOD             INDIV
 JV1853  HISTORY     - 20190919 MARK NOT FOUND   NGS
 JV1853  HISTORY     - 20200321 GOOD             WSRR
 JV1853
 JV1853                          STATION DESCRIPTION
 JV1853
 JV1853'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1853'2.7 MI NE FROM WALKERSVILLE.
 JV1853'ABOUT 2.7 MILES NORTHEAST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1853'THE STATION AT WALKERSVILLE, FREDERICK COUNTY, 81 FEET SOUTHEAST
 JV1853'OF MILEPOST 9, AT A ROAD CROSSING, 33 FEET EAST OF THE CENTER
 JV1853'LINE OF THE TRACK, AND 30 FEET SOUTH OF THE CENTER LINE OF THE
 JV1853'ROAD.  A STANDARD DISK, STAMPED E 12 1935 AND SET IN THE
 JV1853'TOP OF A CONCRETE POST.
 JV1853
 JV1853                          STATION RECOVERY (2015)
 JV1853
 JV1853'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2015 (MOC)
 JV1853'RECOVERED IN GOOD CONDITION.
 JV1853
 JV1853                          STATION RECOVERY (2019)
 JV1853
 JV1853'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV1853'THE MARK WAS SEARCHED BUT NOT FOUND.
 JV1853
 JV1853                          STATION RECOVERY (2020)
 JV1853
 JV1853'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MM)
 JV1853'STATION IS 6.5 FT (2.0 M) NORTHWEST OF GUY WIRE BASE AND 11 FT (3.4 M)
 JV1853'SOUTHWEST OF POWER POLE F2619.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0221 ***********************************************************************
 HV0221  DESIGNATION -  E 120
 HV0221  PID         -  HV0221
 HV0221  STATE/COUNTY-  MD/DORCHESTER
 HV0221  COUNTRY     -  US
 HV0221  USGS QUAD   -  CAMBRIDGE (2016)
 HV0221
 HV0221                         *CURRENT SURVEY CONTROL
 HV0221  ______________________________________________________________________
 HV0221* NAD 83(2011) POSITION- 38 33 11.41515(N) 076 00 11.49781(W)   ADJUSTED
 HV0221* NAD 83(2011) ELLIP HT-   -28.549 (meters)        (06/27/12)   ADJUSTED
 HV0221* NAD 83(2011) EPOCH   -  2010.00
 HV0221* NAVD 88 ORTHO HEIGHT -     6.649 (meters)       21.81  (feet) ADJUSTED
 HV0221  ______________________________________________________________________
 HV0221  GEOID HEIGHT    -        -35.182 (meters)                     GEOID18
 HV0221  NAD 83(2011) X  -  1,207,977.468 (meters)                     COMP
 HV0221  NAD 83(2011) Y  - -4,846,083.786 (meters)                     COMP
 HV0221  NAD 83(2011) Z  -  3,953,629.093 (meters)                     COMP
 HV0221  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 HV0221  DYNAMIC HEIGHT  -          6.645 (meters)       21.80  (feet) COMP
 HV0221  MODELED GRAVITY -    980,016.3   (mgal)                       NAVD 88
 HV0221
 HV0221  VERT ORDER      -  FIRST     CLASS II
 HV0221
 HV0221  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0221  Standards:
 HV0221         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0221            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0221  -------------------------------------------------------------------
 HV0221  NETWORK    0.63   1.16           0.27   0.24   0.59      0.01267431
 HV0221  -------------------------------------------------------------------
 HV0221  Click here for local accuracies and other accuracy information.
 HV0221
 HV0221.The horizontal coordinates were established by GPS observations
 HV0221.and adjusted by the National Geodetic Survey in June 2012.
 HV0221
 HV0221.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0221.been affixed to the stable North American tectonic plate. See 
 HV0221.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0221
 HV0221.The horizontal coordinates are valid at the epoch date displayed above
 HV0221.which is a decimal equivalence of Year/Month/Day.
 HV0221
 HV0221.The orthometric height was determined by differential leveling and
 HV0221.adjusted by the NATIONAL GEODETIC SURVEY
 HV0221.in June 1991.
 HV0221
 HV0221.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0221.GEOID18 height accuracy estimate available here.
 HV0221
 HV0221.Click photographs - Photos may exist for this station.
 HV0221
 HV0221.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0221
 HV0221.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0221
 HV0221.The ellipsoidal height was determined by GPS observations
 HV0221.and is referenced to NAD 83.
 HV0221
 HV0221.The dynamic height is computed by dividing the NAVD 88
 HV0221.geopotential number by the normal gravity value computed on the
 HV0221.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0221.degrees latitude (g = 980.6199 gals.).
 HV0221
 HV0221.The modeled gravity was interpolated from observed gravity values.
 HV0221
 HV0221. The following values were computed from the NAD 83(2011) position.
 HV0221
 HV0221;                    North         East     Units Scale Factor Converg.
 HV0221;SPC MD       -    98,879.818   486,885.484   MT  0.99996561   +0 37 32.3
 HV0221;SPC MD       -   324,408.20  1,597,390.13   sFT  0.99996561   +0 37 32.3
 HV0221;UTM  18      - 4,267,670.345   412,586.968   MT  0.99969410   -0 37 31.0
 HV0221
 HV0221!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0221!SPC MD       -   1.00000448  x   0.99996561  =   0.99997009
 HV0221!UTM  18      -   1.00000448  x   0.99969410  =   0.99969858
 HV0221
 HV0221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1258667670(NAD 83)
 HV0221
 HV0221|---------------------------------------------------------------------|
 HV0221| PID    Reference Object                     Distance      Geod. Az  |
 HV0221|                                                           dddmmss.s |
 HV0221| DJ3498 E 120 AZ MK                         396.327 METERS 02517     |
 HV0221|---------------------------------------------------------------------|
 HV0221
 HV0221                          SUPERSEDED SURVEY CONTROL
 HV0221
 HV0221  NAD 83(2007)-  38 33 11.41557(N)    076 00 11.49907(W) AD(2002.00) B
 HV0221  ELLIP H (02/12/09)  -28.551  (m)                       GP(2002.00) 5 1
 HV0221  NAD 83(2007)-  38 33 11.41539(N)    076 00 11.49842(W) AD(2002.00) 0
 HV0221  ELLIP H (02/10/07)  -28.517  (m)                       GP(2002.00)    
 HV0221  NAD 83(1991)-  38 33 11.41531(N)    076 00 11.49829(W) AD(       ) A
 HV0221  ELLIP H (02/12/02)  -28.513  (m)                       GP(       ) 4 1
 HV0221  NAVD 88               6.65   (m)           21.8    (f) LEVELING    3  
 HV0221  NGVD 29 (11/26/84)    6.883  (m)           22.58   (f) ADJUSTED    1 2
 HV0221
 HV0221.Superseded values are not recommended for survey control.
 HV0221
 HV0221.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0221.See file dsdata.pdf to determine how the superseded data were derived.
 HV0221
 HV0221_MARKER: DB = BENCH MARK DISK
 HV0221_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0221+WITH SETTING: INTO GROUND
 HV0221_STAMPING: E 120 1971
 HV0221_MARK LOGO: CGS
 HV0221_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0221_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0221+STABILITY: SURFACE MOTION
 HV0221_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0221+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2005
 HV0221
 HV0221  HISTORY     - Date     Condition        Report By
 HV0221  HISTORY     - 1971     MONUMENTED       NGS
 HV0221  HISTORY     - 20000327 GOOD             MDSHA
 HV0221  HISTORY     - 20020624 GOOD             MDSHA
 HV0221  HISTORY     - 20050909 GOOD             NGS
 HV0221
 HV0221                          STATION DESCRIPTION
 HV0221
 HV0221'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0221'3.4 MI NW FROM LINKWOOD.
 HV0221'ABOUT 3.4 MILES NORTHWEST ALONG U.S. HIGHWAY 50 FROM THE POST
 HV0221'OFFICE AT LINKWOOD, 195 FEET NORTHWEST OF THE CENTER OF THE
 HV0221'JUNCTION OF STATE HIGHWAY 16, 130 FEET NORTH OF THE CENTER LINE
 HV0221'OF THE NORTH LANES OF THE U.S. HIGHWAY, 161 FEET WEST OF THE
 HV0221'CENTER LINE OF THE STATE HIGHWAY, 132 FEET SOUTHWEST OF POWER
 HV0221'POLE NUMBER 85A-143, 134 FEET NORTHEAST OF THE SOUTHWEST END
 HV0221'OF A GUARDRAIL, 132 FEET SOUTHWEST OF THE NORTHEAST END OF
 HV0221'A GUARDRAIL, 1.4 FEET SOUTHWEST OF A METAL WITNESS POST, ABOUT
 HV0221'1 FOOT BELOW THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-FOOT
 HV0221'SECTION OF COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE
 HV0221'PLATE.  THE DISK IS 2 INCHES BELOW THE SURFACE OF THE GROUND
 HV0221'AND IS PROTECTED BY A 5-INCH METAL PIPE THAT IS 1 INCH BELOW
 HV0221'THE SURFACE OF THE GROUND.  NOTE-- THIS MARK IS ALSO ABOUT 4.35
 HV0221'MILES SOUTHEAST ALONG U.S. HIGHWAY 50 FROM THE SOUTH END OF
 HV0221'THE HIGHWAY BRIDGE OVER THE CHOPTANK RIVER AT CAMBRIDGE.
 HV0221
 HV0221                          STATION RECOVERY (2000)
 HV0221
 HV0221'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV0221'RECOVERED AS DESCRIBED.
 HV0221
 HV0221                          STATION RECOVERY (2002)
 HV0221
 HV0221'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 HV0221'RECOVERED AS DESCRIBED.
 HV0221
 HV0221                          STATION RECOVERY (2005)
 HV0221
 HV0221'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (JRO)
 HV0221'RECOVERED AS DESCRIBED. IN GRASS FIELD (MOWED), ROUGHLY 8 FT SOUTHERLY
 HV0221'FROM A WITNESS  POST AT SOUTH EDGE OF CULTIVATED FIELD, ABOUT 1 FT
 HV0221'NORTH OF A 1 INCH WHITE PVC PIPE AND 1  FT SOUTH OF A SMALL FENCE
 HV0221'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ3498 ***********************************************************************
 DJ3498  DESIGNATION -  E 120 AZ MK
 DJ3498  PID         -  DJ3498
 DJ3498  STATE/COUNTY-  MD/DORCHESTER
 DJ3498  COUNTRY     -  US
 DJ3498  USGS QUAD   -  CAMBRIDGE (2016)
 DJ3498
 DJ3498                         *CURRENT SURVEY CONTROL
 DJ3498  ______________________________________________________________________
 DJ3498* NAD 83(2011) POSITION- 38 33 23.03739(N) 076 00 04.50812(W)   ADJUSTED
 DJ3498* NAD 83(2011) ELLIP HT-   -29.485 (meters)        (06/27/12)   ADJUSTED
 DJ3498* NAD 83(2011) EPOCH   -  2010.00
 DJ3498* NAVD 88 ORTHO HEIGHT -     5.7   (meters)       19.    (feet) GPS OBS
 DJ3498  ______________________________________________________________________
 DJ3498  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DJ3498  GEOID HEIGHT    -        -35.153 (meters)                     GEOID03
 DJ3498  GEOID HEIGHT    -        -35.180 (meters)                     GEOID18
 DJ3498  NAD 83(2011) X  -  1,208,087.478 (meters)                     COMP
 DJ3498  NAD 83(2011) Y  - -4,845,825.412 (meters)                     COMP
 DJ3498  NAD 83(2011) Z  -  3,953,908.762 (meters)                     COMP
 DJ3498  LAPLACE CORR    -         -2.77  (seconds)                    DEFLEC18
 DJ3498
 DJ3498  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ3498  Standards:
 DJ3498         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ3498            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ3498  -------------------------------------------------------------------
 DJ3498  NETWORK    0.74   1.29           0.32   0.28   0.66     -0.03203315
 DJ3498  -------------------------------------------------------------------
 DJ3498  Click here for local accuracies and other accuracy information.
 DJ3498
 DJ3498.The horizontal coordinates were established by GPS observations
 DJ3498.and adjusted by the National Geodetic Survey in June 2012.
 DJ3498
 DJ3498.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ3498.been affixed to the stable North American tectonic plate. See 
 DJ3498.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ3498
 DJ3498.The horizontal coordinates are valid at the epoch date displayed above
 DJ3498.which is a decimal equivalence of Year/Month/Day.
 DJ3498
 DJ3498.The orthometric height was determined by GPS observations and a
 DJ3498.high-resolution geoid model.
 DJ3498
 DJ3498.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ3498.GEOID18 height accuracy estimate available here.
 DJ3498
 DJ3498.Click photographs - Photos may exist for this station.
 DJ3498
 DJ3498.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ3498
 DJ3498.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ3498
 DJ3498.The ellipsoidal height was determined by GPS observations
 DJ3498.and is referenced to NAD 83.
 DJ3498
 DJ3498. The following values were computed from the NAD 83(2011) position.
 DJ3498
 DJ3498;                    North         East     Units Scale Factor Converg.
 DJ3498;SPC MD       -    99,240.009   487,050.792   MT  0.99996530   +0 37 36.7
 DJ3498;SPC MD       -   325,589.93  1,597,932.47   sFT  0.99996530   +0 37 36.7
 DJ3498;UTM  18      - 4,268,026.744   412,760.054   MT  0.99969372   -0 37 26.8
 DJ3498
 DJ3498!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ3498!SPC MD       -   1.00000463  x   0.99996530  =   0.99996993
 DJ3498!UTM  18      -   1.00000463  x   0.99969372  =   0.99969834
 DJ3498
 DJ3498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1276068026(NAD 83)
 DJ3498
 DJ3498|---------------------------------------------------------------------|
 DJ3498| PID    Reference Object                     Distance      Geod. Az  |
 DJ3498|                                                           dddmmss.s |
 DJ3498| HV0221 E 120                               396.327 METERS 20517     |
 DJ3498|---------------------------------------------------------------------|
 DJ3498
 DJ3498                          SUPERSEDED SURVEY CONTROL
 DJ3498
 DJ3498  NAD 83(2007)-  38 33 23.03780(N)    076 00 04.50937(W) AD(2002.00) 1
 DJ3498  ELLIP H (04/02/09)  -29.487  (m)                       GP(2002.00) 4 1
 DJ3498  NAD 83(1991)-  38 33 23.03754(N)    076 00 04.50859(W) AD(       ) 1
 DJ3498  ELLIP H (10/15/07)  -29.446  (m)                       GP(       ) 4 1
 DJ3498
 DJ3498.Superseded values are not recommended for survey control.
 DJ3498
 DJ3498.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ3498.See file dsdata.pdf to determine how the superseded data were derived.
 DJ3498
 DJ3498_MARKER: DD = SURVEY DISK
 DJ3498_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ3498_STAMPING: E 120 AZ 1991
 DJ3498_MARK LOGO: MDSHA
 DJ3498_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ3498_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ3498+STABILITY: SURFACE MOTION
 DJ3498_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ3498+SATELLITE: SATELLITE OBSERVATIONS - June 24, 2002
 DJ3498
 DJ3498  HISTORY     - Date     Condition        Report By
 DJ3498  HISTORY     - 1991     MONUMENTED       MDSHA
 DJ3498  HISTORY     - 20020624 GOOD             MDSHA
 DJ3498
 DJ3498                          STATION DESCRIPTION
 DJ3498
 DJ3498'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 DJ3498'THE MARK IS ABOUT 4.0 MI (6.4 KM) SOUTHEAST OF CAMBRIDGE AND 4.6 MI
 DJ3498'(7.4 KM) SOUTHWEST OF EAST NEW MARKET.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DJ3498'TO REACH THE MARK FROM THE INTERSECTION OF US ROUTE 50 AND MD ROUTE 16
 DJ3498'AT MOUNT HOLLEY, GO NORTHEAST ON MD ROUTE 16 FOR 0.25 MI (0.4 KM) TO
 DJ3498'THE MARK ON THE LEFT.
 DJ3498'
 DJ3498'IT IS 8.4 FT (2.6 M) NORTHWEST OF THE NORTHWEST EDGE OF MD ROUTE 16,
 DJ3498'65.0 FT (19.8 M) NORTHEAST OF THE END OF A METAL GUARD RAIL, 23.3 FT
 DJ3498'(7.1 M) SOUTHEAST OF A CONCRETE DITCH, 116.5 FT (35.5 M) SOUTH OF A
 DJ3498'DELMARVA POWER AND LIGHT POLE NUMBER 139-35408-00209 AND SET IN THE
 DJ3498'TOP OF A 9-INCH (23 CM) ROUND CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0599 ***********************************************************************
 JV0599  DESIGNATION -  E 121
 JV0599  PID         -  JV0599
 JV0599  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0599  COUNTRY     -  US
 JV0599  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0599
 JV0599                         *CURRENT SURVEY CONTROL
 JV0599  ______________________________________________________________________
 JV0599* NAD 83(2011) POSITION- 39 15 18.26558(N) 076 38 18.14082(W)   ADJUSTED
 JV0599* NAD 83(2011) ELLIP HT-   -18.388 (meters)        (06/27/12)   ADJUSTED
 JV0599* NAD 83(2011) EPOCH   -  2010.00
 JV0599* NAVD 88 ORTHO HEIGHT -    14.312 (meters)       46.96  (feet) ADJUSTED
 JV0599  ______________________________________________________________________
 JV0599  GEOID HEIGHT    -        -32.708 (meters)                     GEOID18
 JV0599  NAD 83(2011) X  -  1,142,873.922 (meters)                     COMP
 JV0599  NAD 83(2011) Y  - -4,811,574.372 (meters)                     COMP
 JV0599  NAD 83(2011) Z  -  4,014,272.678 (meters)                     COMP
 JV0599  LAPLACE CORR    -         -5.88  (seconds)                    DEFLEC18
 JV0599  DYNAMIC HEIGHT  -         14.304 (meters)       46.93  (feet) COMP
 JV0599  MODELED GRAVITY -    980,101.6   (mgal)                       NAVD 88
 JV0599
 JV0599  VERT ORDER      -  FIRST     CLASS I
 JV0599
 JV0599  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0599  Standards:
 JV0599         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0599            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0599  -------------------------------------------------------------------
 JV0599  NETWORK    0.77   1.22           0.36   0.25   0.62     -0.07036998
 JV0599  -------------------------------------------------------------------
 JV0599  Click here for local accuracies and other accuracy information.
 JV0599
 JV0599.The horizontal coordinates were established by GPS observations
 JV0599.and adjusted by the National Geodetic Survey in June 2012.
 JV0599
 JV0599.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0599.been affixed to the stable North American tectonic plate. See 
 JV0599.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0599
 JV0599.The horizontal coordinates are valid at the epoch date displayed above
 JV0599.which is a decimal equivalence of Year/Month/Day.
 JV0599
 JV0599.The orthometric height was determined by differential leveling and
 JV0599.adjusted by the NATIONAL GEODETIC SURVEY
 JV0599.in June 1991.
 JV0599
 JV0599.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0599.GEOID18 height accuracy estimate available here.
 JV0599
 JV0599.Click photographs - Photos may exist for this station.
 JV0599
 JV0599.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0599
 JV0599.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0599
 JV0599.The ellipsoidal height was determined by GPS observations
 JV0599.and is referenced to NAD 83.
 JV0599
 JV0599.The dynamic height is computed by dividing the NAVD 88
 JV0599.geopotential number by the normal gravity value computed on the
 JV0599.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0599.degrees latitude (g = 980.6199 gals.).
 JV0599
 JV0599.The modeled gravity was interpolated from observed gravity values.
 JV0599
 JV0599. The following values were computed from the NAD 83(2011) position.
 JV0599
 JV0599;                    North         East     Units Scale Factor Converg.
 JV0599;SPC MD       -   176,384.665   431,212.742   MT  0.99997171   +0 13 37.1
 JV0599;SPC MD       -   578,688.69  1,414,737.14   sFT  0.99997171   +0 13 37.1
 JV0599;UTM  18      - 4,346,362.127   358,637.359   MT  0.99984605   -1 02 12.8
 JV0599
 JV0599!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0599!SPC MD       -   1.00000288  x   0.99997171  =   0.99997459
 JV0599!UTM  18      -   1.00000288  x   0.99984605  =   0.99984893
 JV0599
 JV0599_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5863746362(NAD 83)
 JV0599
 JV0599                          SUPERSEDED SURVEY CONTROL
 JV0599
 JV0599  NAD 83(2007)-  39 15 18.26583(N)    076 38 18.14164(W) AD(2002.00) 0
 JV0599  ELLIP H (02/10/07)  -18.374  (m)                       GP(2002.00)    
 JV0599  ELLIP H (08/30/02)  -18.363  (m)                       GP(       ) 4 2
 JV0599  NAD 83(1991)-  39 15 18.26594(N)    076 38 18.14131(W) AD(       ) 1
 JV0599  ELLIP H (10/26/00)  -18.427  (m)                       GP(       ) 4 1
 JV0599  NAVD 88              14.31   (m)           46.9    (f) LEVELING    3  
 JV0599  NGVD 29 (11/26/84)   14.553  (m)           47.75   (f) ADJUSTED    1 1
 JV0599
 JV0599.Superseded values are not recommended for survey control.
 JV0599
 JV0599.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0599.See file dsdata.pdf to determine how the superseded data were derived.
 JV0599
 JV0599_MARKER: DB = BENCH MARK DISK
 JV0599_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0599_SP_SET: R.R. BRIDGE HEADWALL
 JV0599_STAMPING: E 121 1971
 JV0599_MARK LOGO: CGS
 JV0599_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0599_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0599+SATELLITE: SATELLITE OBSERVATIONS - October 05, 2022
 JV0599
 JV0599  HISTORY     - Date     Condition        Report By
 JV0599  HISTORY     - 1971     MONUMENTED       NGS
 JV0599  HISTORY     - 19990401 GOOD             AMTHOM
 JV0599  HISTORY     - 20070913 GOOD             JCLS
 JV0599  HISTORY     - 20101020 GOOD             MDSHA
 JV0599  HISTORY     - 20170608 GOOD             NGS
 JV0599  HISTORY     - 20221005 GOOD             WTBALL
 JV0599
 JV0599                          STATION DESCRIPTION
 JV0599
 JV0599'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0599'AT BALTIMORE.
 JV0599'AT WEST BALTIMORE, ABOUT 0.2 MILE NORTH ALONG OLD ANNAPOLIS ROAD
 JV0599'FROM THE OVERPASS FOR THE BALTIMORE-WASHINGTON EXPRESSWAY, 15
 JV0599'FEET EAST OF THE CENTER LINE OF THE ROAD, SET IN THE TOP OF THE
 JV0599'NORTH END OF THE NORTHEAST CONCRETE WING WALL ON THE EAST
 JV0599'ABUTMENT OF THE ROAD OVERPASS FOR THE BALTIMORE AND OHIO RAILROAD,
 JV0599'1 1/2 FEET SOUTH OF THE NORTH END OF THE WING WALL, AND ABOUT 4
 JV0599'FEET ABOVE THE LEVEL OF THE ROAD.
 JV0599
 JV0599                          STATION RECOVERY (1999)
 JV0599
 JV0599'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 1999
 JV0599'RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV0599
 JV0599                          STATION RECOVERY (2007)
 JV0599
 JV0599'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2007 (MRY)
 JV0599'STATION IS HEAVILY OBSTRUCTED ON 3 SIDES.  CAREFUL PLANNING REQUIRED
 JV0599'FOR GPS USAGE.
 JV0599
 JV0599                          STATION RECOVERY (2010)
 JV0599
 JV0599'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (TPB)
 JV0599'RECOVERED AND CLEARED OF OVERGROWTH. HAND PULL DISTANCES HAVE CHANGED
 JV0599'SLIGHTLY.  VIRTUALLY NEXT TO MT. AUBURN CEMETRY CHAIN LINK FENCE.
 JV0599'MAYBE SUITABLE FOR FUTURE GPS OBSERVATIONS.
 JV0599
 JV0599                          STATION RECOVERY (2017)
 JV0599
 JV0599'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (LHB)
 JV0599'THE MARK IS 17.5 FT (5.3 M) SOUTHWEST OF POWER POLE NUMBER 505709 AND
 JV0599'14 FT (4.3 M) WEST OF A FENCE CORNER.
 JV0599
 JV0599                          STATION RECOVERY (2022)
 JV0599
 JV0599'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2022 (NAW)
 JV0599'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0295 ***********************************************************************
 JV0295  DESIGNATION -  E 122
 JV0295  PID         -  JV0295
 JV0295  STATE/COUNTY-  MD/QUEEN ANNES
 JV0295  COUNTRY     -  US
 JV0295  USGS QUAD   -  CENTREVILLE (2017)
 JV0295
 JV0295                         *CURRENT SURVEY CONTROL
 JV0295  ______________________________________________________________________
 JV0295* NAD 83(1986) POSITION- 39 05 37.2    (N) 076 02 07.6    (W)   HD_HELD2
 JV0295* NAVD 88 ORTHO HEIGHT -    14.393 (meters)       47.22  (feet) ADJUSTED
 JV0295  ______________________________________________________________________
 JV0295  GEOID HEIGHT    -        -33.705 (meters)                     GEOID18
 JV0295  DYNAMIC HEIGHT  -         14.386 (meters)       47.20  (feet) COMP
 JV0295  MODELED GRAVITY -    980,098.4   (mgal)                       NAVD 88
 JV0295
 JV0295  VERT ORDER      -  FIRST     CLASS II
 JV0295
 JV0295.The horizontal coordinates were established by autonomous hand held GPS
 JV0295.observations and have an estimated accuracy of +/- 10 meters.
 JV0295
 JV0295.The orthometric height was determined by differential leveling and
 JV0295.adjusted by the NATIONAL GEODETIC SURVEY
 JV0295.in June 1991.
 JV0295
 JV0295.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0295.GEOID18 height accuracy estimate available here.
 JV0295
 JV0295.Click photographs - Photos may exist for this station.
 JV0295
 JV0295.The dynamic height is computed by dividing the NAVD 88
 JV0295.geopotential number by the normal gravity value computed on the
 JV0295.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0295.degrees latitude (g = 980.6199 gals.).
 JV0295
 JV0295.The modeled gravity was interpolated from observed gravity values.
 JV0295
 JV0295;                    North         East    Units  Estimated Accuracy
 JV0295;SPC MD       -   158,845.      483,441.      MT  (+/- 10 meters HH2 GPS)
 JV0295
 JV0295_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1045627681(NAD 83)
 JV0295
 JV0295                          SUPERSEDED SURVEY CONTROL
 JV0295
 JV0295  NGVD 29 (11/26/84)   14.632  (m)           48.01   (f) ADJUSTED    1 2
 JV0295
 JV0295.Superseded values are not recommended for survey control.
 JV0295
 JV0295.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0295.See file dsdata.pdf to determine how the superseded data were derived.
 JV0295
 JV0295_MARKER: DB = BENCH MARK DISK
 JV0295_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0295+WITH SETTING: INTO GROUND
 JV0295_STAMPING: E 122 1971
 JV0295_MARK LOGO: CGS
 JV0295_PROJECTION: RECESSED 3 CENTIMETERS
 JV0295_MAGNETIC: I = MARKER IS A STEEL ROD
 JV0295_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0295_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0295+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV0295
 JV0295  HISTORY     - Date     Condition        Report By
 JV0295  HISTORY     - 1971     MONUMENTED       NGS
 JV0295  HISTORY     - 20000326 GOOD             USPSQD
 JV0295  HISTORY     - 20010331 GOOD             NGS
 JV0295  HISTORY     - 20060318 GOOD             USPSQD
 JV0295  HISTORY     - 20250731 GOOD             PROFLN
 JV0295
 JV0295                          STATION DESCRIPTION
 JV0295
 JV0295'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0295'ABOUT 4.25 MILES NORTHEAST ALONG U.S. HIGHWAY 213 FROM THE
 JV0295'COUNTY COURTHOUSE AT CENTREVILLE, ABOUT 4.95 MILES SOUTHWEST
 JV0295'ALONG U.S. HIGHWAY 213 FROM THE JUNCTION OF STATE HIGHWAY 300
 JV0295'AT CHURCH HILL, 159 FEET SOUTH OF THE WEST END OF A 6-FOOT
 JV0295'GALVANIZED PIPE CULVERT UNDER THE HIGHWAY, 28 FEET WEST OF THE
 JV0295'CENTER LINE OF THE HIGHWAY, 3 1/2 FEET SOUTH OF A CABLE LINE
 JV0295'POLE, (NO. 506), 1.2 FEET EAST OF A FENCE LINE, 2.4 FEET NORTH
 JV0295'OF A METAL WITNESS POST, 1/2 FOOT BELOW THE LEVEL OF THE HIGHWAY,
 JV0295'ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED
 JV0295'TO A METAL BASE PLATE.  THE DISK IS ONE INCH BELOW THE LEVEL OF
 JV0295'THE GROUND AND ENCASED IN A 6 INCH STEEL PIPE THAT IS FLUSH WITH
 JV0295'THE GROUND.
 JV0295
 JV0295                          STATION RECOVERY (2000)
 JV0295
 JV0295'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 JV0295'REFERENCED FENCE NO LONGER EXISTS.  DISK IS NOW 6 INCHES BELOW GROUND
 JV0295'LEVEL.
 JV0295
 JV0295                          STATION RECOVERY (2001)
 JV0295
 JV0295'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV0295'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV0295
 JV0295                          STATION RECOVERY (2006)
 JV0295
 JV0295'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JV0295'RECOVERED IN GOOD CONDITION.
 JV0295
 JV0295                          STATION RECOVERY (2025)
 JV0295
 JV0295'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0295'THE MARK IS NOW UNDER A 10 INCH (25 CM) DIAMETER VALVE BOX THAT
 JV0295'PROJECTS 0.2 FT (6 CM), 11 FT (3.4 M) SOUTHWEST OF THE SOUTHWEST END
 JV0295'OF A GUARD RAIL AND 6 FT (1.8 M) WEST OF THE LINE OF THE GUARD RAIL
 JV0295'EXTENDED.  OVERGROWN WITH VINES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1254 ***********************************************************************
 HV1254  DESIGNATION -  E 123
 HV1254  PID         -  HV1254
 HV1254  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1254  COUNTRY     -  US
 HV1254  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1254
 HV1254                         *CURRENT SURVEY CONTROL
 HV1254  ______________________________________________________________________
 HV1254* NAD 83(1986) POSITION- 38 57 48.     (N) 076 56 06.     (W)   SCALED
 HV1254* NAVD 88 ORTHO HEIGHT -    22.909 (meters)       75.16  (feet) ADJUSTED
 HV1254  ______________________________________________________________________
 HV1254  GEOID HEIGHT    -        -32.161 (meters)                     GEOID18
 HV1254  DYNAMIC HEIGHT  -         22.897 (meters)       75.12  (feet) COMP
 HV1254  MODELED GRAVITY -    980,104.2   (mgal)                       NAVD 88
 HV1254
 HV1254  VERT ORDER      -  FIRST     CLASS I
 HV1254
 HV1254.The horizontal coordinates were scaled from a map and have
 HV1254.an estimated accuracy of +/- 6 seconds.
 HV1254
 HV1254.The orthometric height was determined by differential leveling and
 HV1254.adjusted by the NATIONAL GEODETIC SURVEY
 HV1254.in June 1991.
 HV1254
 HV1254.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1254.GEOID18 height accuracy estimate available here.
 HV1254
 HV1254.Click photographs - Photos may exist for this station.
 HV1254
 HV1254.The dynamic height is computed by dividing the NAVD 88
 HV1254.geopotential number by the normal gravity value computed on the
 HV1254.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1254.degrees latitude (g = 980.6199 gals.).
 HV1254
 HV1254.The modeled gravity was interpolated from observed gravity values.
 HV1254
 HV1254;                    North         East    Units  Estimated Accuracy
 HV1254;SPC MD       -   143,940.      405,630.      MT  (+/- 180 meters Scaled)
 HV1254
 HV1254_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ323144(NAD 83)
 HV1254
 HV1254                          SUPERSEDED SURVEY CONTROL
 HV1254
 HV1254  NGVD 29 (11/26/84)   23.139  (m)           75.92   (f) ADJUSTED    1 1
 HV1254
 HV1254.Superseded values are not recommended for survey control.
 HV1254
 HV1254.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1254.See file dsdata.pdf to determine how the superseded data were derived.
 HV1254
 HV1254_MARKER: DB = BENCH MARK DISK
 HV1254_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV1254_STAMPING: E 123 1971
 HV1254_MARK LOGO: CGS
 HV1254_PROJECTION: PROJECTING 5 CENTIMETERS
 HV1254_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1254
 HV1254  HISTORY     - Date     Condition        Report By
 HV1254  HISTORY     - 1971     MONUMENTED       NGS
 HV1254  HISTORY     - 20020513 POOR             DEWDAV
 HV1254
 HV1254                          STATION DESCRIPTION
 HV1254
 HV1254'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1254'AT RIVERDALE.
 HV1254'AT RIVERDALE, ABOUT 0.1 MILE EAST ALONG EAST WEST HIGHWAY FROM
 HV1254'THE INTERSECTION OF U.S. HIGHWAY 1, ABOUT 1.85 MILES SOUTHWEST
 HV1254'ALONG U.S. HIGHWAY 1 FROM THE UNIVERSITY OF MARYLAND AT COLLEGE
 HV1254'PARK, 105 FEET WEST OF THE SOUTHWEST END OF THE OVERPASS FOR
 HV1254'THE BALTIMORE AND OHIO RAILROAD, 39 FEET SOUTH OF THE CENTER
 HV1254'LINE OF THE HIGHWAY, 1 1/2 FEET EAST OF POWER POLE NUMBER 81240,
 HV1254'1.0 FOOT WEST OF A METAL WITNESS POST, ABOUT LEVEL WITH THE
 HV1254'ROAD, AND ON THE TOP OF A COPPER COATED ROD WHICH PROJECTS
 HV1254'1 INCH AND IS PROTECTED BY A 5-INCH METAL PIPE PROJECTING
 HV1254'2 INCHES.  THE ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 52 FEET.
 HV1254
 HV1254                          STATION RECOVERY (2002)
 HV1254
 HV1254'RECOVERY NOTE BY DEWBERRY DAVIS 2002 (KEC)
 HV1254'STATION IS BENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0286 ***********************************************************************
 HV0286  DESIGNATION -  E 124
 HV0286  PID         -  HV0286
 HV0286  STATE/COUNTY-  MD/DORCHESTER
 HV0286  COUNTRY     -  US
 HV0286  USGS QUAD   -  CHURCH CREEK (2016)
 HV0286
 HV0286                         *CURRENT SURVEY CONTROL
 HV0286  ______________________________________________________________________
 HV0286* NAD 83(1986) POSITION- 38 30 37.4    (N) 076 12 37.9    (W)   HD_HELD2
 HV0286* NAVD 88 ORTHO HEIGHT -     0.884 (meters)        2.90  (feet) ADJUSTED
 HV0286  ______________________________________________________________________
 HV0286  GEOID HEIGHT    -        -34.835 (meters)                     GEOID18
 HV0286  DYNAMIC HEIGHT  -          0.883 (meters)        2.90  (feet) COMP
 HV0286  MODELED GRAVITY -    980,019.3   (mgal)                       NAVD 88
 HV0286
 HV0286  VERT ORDER      -  FIRST     CLASS II
 HV0286
 HV0286.The horizontal coordinates were established by autonomous hand held GPS
 HV0286.observations and have an estimated accuracy of +/- 10 meters.
 HV0286
 HV0286.The orthometric height was determined by differential leveling and
 HV0286.adjusted by the NATIONAL GEODETIC SURVEY
 HV0286.in June 1991.
 HV0286
 HV0286.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0286.GEOID18 height accuracy estimate available here.
 HV0286
 HV0286.Click photographs - Photos may exist for this station.
 HV0286
 HV0286.The dynamic height is computed by dividing the NAVD 88
 HV0286.geopotential number by the normal gravity value computed on the
 HV0286.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0286.degrees latitude (g = 980.6199 gals.).
 HV0286
 HV0286.The modeled gravity was interpolated from observed gravity values.
 HV0286
 HV0286;                    North         East    Units  Estimated Accuracy
 HV0286;SPC MD       -    93,954.      468,855.      MT  (+/- 10 meters HH2 GPS)
 HV0286
 HV0286_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9445763140(NAD 83)
 HV0286
 HV0286                          SUPERSEDED SURVEY CONTROL
 HV0286
 HV0286  NGVD 29 (11/26/84)    1.116  (m)            3.66   (f) ADJUSTED    1 2
 HV0286
 HV0286.Superseded values are not recommended for survey control.
 HV0286
 HV0286.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0286.See file dsdata.pdf to determine how the superseded data were derived.
 HV0286
 HV0286_MARKER: DB = BENCH MARK DISK
 HV0286_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV0286_STAMPING: E 124 1971
 HV0286_MARK LOGO: CGS
 HV0286_PROJECTION: RECESSED 5 CENTIMETERS
 HV0286_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0286_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0286+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2014
 HV0286
 HV0286  HISTORY     - Date     Condition        Report By
 HV0286  HISTORY     - 1971     MONUMENTED       NGS
 HV0286  HISTORY     - 20060121 GOOD             USPSQD
 HV0286  HISTORY     - 20070204 GOOD             USPSQD
 HV0286  HISTORY     - 20140208 GOOD             ARCSHE
 HV0286
 HV0286                          STATION DESCRIPTION
 HV0286
 HV0286'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0286'0.6 MI NE FROM MADISON.
 HV0286'ABOUT 0.6 MILE NORTHEAST ALONG STATE HIGHWAY 16 FROM THE GETHSEMANE
 HV0286'METHODIST CHURCH AT MADISON, ABOUT 0.4 MILE SOUTHEAST ALONG OLD
 HV0286'STATE HIGHWAY 16 FROM THE POST OFFICE AT MADISON, AT THE JUNCTION
 HV0286'OF THE HIGHWAY AND OLD HIGHWAY 16, 217 FEET EAST OF THE CENTER
 HV0286'OF THE JUNCTION, 51 1/2 FEET SOUTHEAST OF THE CENTER LINE OF THE
 HV0286'NEW HIGHWAY, 104.3 FEET EAST OF THE NORTHEAST END OF THE SOUTHEAST
 HV0286'CONCRETE HEADWALL OF A 4-FOOT METAL PIPE CULVERT UNDER THE
 HV0286'HIGHWAY, 2 1/2 FEET SOUTHWEST OF TELEPHONE POLE NUMBER 363, 1.1
 HV0286'FEET NORTHEAST OF A METAL WITNESS POST, ABOUT 2 FEET BELOW THE
 HV0286'LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-INCH METAL PIPE THAT
 HV0286'IS LEVEL WITH THE GROUND.
 HV0286
 HV0286                          STATION RECOVERY (2006)
 HV0286
 HV0286'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV0286'THERE IS NO WITNESS POST.  THE TELEPHONE POLE HAS 2 GUY WIRES,
 HV0286'SOUTH SIDE OF HIGHWAY. THE GETHSEMANE CHURCH WAS RAZED IN 1986.
 HV0286
 HV0286                          STATION RECOVERY (2007)
 HV0286
 HV0286'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HV0286'THERE IS A NEW DORCHESTER COUNTY MARK(NAMED WHITMARSH) 2 FEET OFF THE
 HV0286'ROAD AND 26 FEET W OF THE MARK. MARK IS AS DESCRIBED WEST OF POLE WITH
 HV0286'2 GUY WIRES, SEVERAL INCHES UNDER THE SURFACE.
 HV0286
 HV0286                          STATION RECOVERY (2014)
 HV0286
 HV0286'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0286'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0690 ***********************************************************************
 JV0690  DESIGNATION -  E 125
 JV0690  PID         -  JV0690
 JV0690  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0690  COUNTRY     -  US
 JV0690  USGS QUAD   -  ROUND BAY (2016)
 JV0690
 JV0690                         *CURRENT SURVEY CONTROL
 JV0690  ______________________________________________________________________
 JV0690* NAD 83(1986) POSITION- 39 01 58.85   (N) 076 30 28.05   (W)   HD_HELD1
 JV0690* NAVD 88 ORTHO HEIGHT -    23.929 (meters)       78.51  (feet) ADJUSTED
 JV0690  ______________________________________________________________________
 JV0690  GEOID HEIGHT    -        -33.224 (meters)                     GEOID18
 JV0690  DYNAMIC HEIGHT  -         23.916 (meters)       78.46  (feet) COMP
 JV0690  MODELED GRAVITY -    980,077.1   (mgal)                       NAVD 88
 JV0690
 JV0690  VERT ORDER      -  FIRST     CLASS II
 JV0690
 JV0690.The horizontal coordinates were determined by differentially corrected
 JV0690.hand held GPS observations or other comparable positioning techniques
 JV0690.and have an estimated accuracy of +/- 3 meters.
 JV0690
 JV0690.The orthometric height was determined by differential leveling and
 JV0690.adjusted by the NATIONAL GEODETIC SURVEY
 JV0690.in June 1991.
 JV0690
 JV0690.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0690.GEOID18 height accuracy estimate available here.
 JV0690
 JV0690.Click photographs - Photos may exist for this station.
 JV0690
 JV0690.The dynamic height is computed by dividing the NAVD 88
 JV0690.geopotential number by the normal gravity value computed on the
 JV0690.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0690.degrees latitude (g = 980.6199 gals.).
 JV0690
 JV0690.The modeled gravity was interpolated from observed gravity values.
 JV0690
 JV0690;                    North         East    Units  Estimated Accuracy
 JV0690;SPC MD       -   151,786.0     442,616.2     MT  (+/- 3 meters HH1 GPS) 
 JV0690
 JV0690_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6949521521(NAD 83)
 JV0690
 JV0690                          SUPERSEDED SURVEY CONTROL
 JV0690
 JV0690  NGVD 29 (11/26/84)   24.173  (m)           79.31   (f) ADJUSTED    1 2
 JV0690
 JV0690.Superseded values are not recommended for survey control.
 JV0690
 JV0690.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0690.See file dsdata.pdf to determine how the superseded data were derived.
 JV0690
 JV0690_MARKER: DB = BENCH MARK DISK
 JV0690_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0690_SP_SET: CATCH BASIN
 JV0690_STAMPING: E 125 1971
 JV0690_MARK LOGO: CGS
 JV0690_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0690_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0690_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0690+SATELLITE: SATELLITE OBSERVATIONS - August 20, 2016
 JV0690
 JV0690  HISTORY     - Date     Condition        Report By
 JV0690  HISTORY     - 1971     MONUMENTED       NGS
 JV0690  HISTORY     - 20010628 GOOD             MDSHA
 JV0690  HISTORY     - 20051215 GOOD             USPSQD
 JV0690  HISTORY     - 20160820 GOOD             USPSQD
 JV0690
 JV0690                          STATION DESCRIPTION
 JV0690
 JV0690'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0690'3.3 MI NW FROM ANNAPOLIS.
 JV0690'ABOUT 1.6 MILES NORTHWEST ALONG STATE HIGHWAY 450 FROM THE
 JV0690'NORTHEAST END OF THE HIGHWAY BRIDGE OVER THE SEVERN RIVER AT
 JV0690'ANNAPOLIS, THENCE 1.7 MILES NORTHWEST ALONG STATE HIGHWAY 2,
 JV0690'NEAR THE JUNCTION OF OLD ANNAPOLIS ROAD LEADING NORTHWEST,
 JV0690'SET IN THE TOP OF THE EAST CORNER OF A 6- X 6- X 5-FOOT CONCRETE
 JV0690'CATCH BASIN THAT IS AT THE SOUTHWEST END OF A 36-INCH METAL
 JV0690'PIPE CULVERT UNDER OLD ANNAPOLIS ROAD, 116 FEET SOUTHWEST
 JV0690'AND ACROSS THE ROAD FROM THE CENTER LINE OF THE SOUTHWEST LANES
 JV0690'OF THE HIGHWAY, 59 YARDS WEST OF THE CENTER OF THE JUNCTION OF
 JV0690'THE HIGHWAY AND THE ROAD, AND ABOUT 1 FOOT BELOW THE LEVEL
 JV0690'OF THE HIGHWAY.
 JV0690
 JV0690                          STATION RECOVERY (2001)
 JV0690
 JV0690'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV0690'RECOVERED AS DESCRIBED.
 JV0690
 JV0690                          STATION RECOVERY (2005)
 JV0690
 JV0690'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV0690'RECOVERED IN GOOD CONDITION.
 JV0690
 JV0690                          STATION RECOVERY (2016)
 JV0690
 JV0690'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 JV0690'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0184 ***********************************************************************
 HV0184  DESIGNATION -  E 126
 HV0184  PID         -  HV0184
 HV0184  STATE/COUNTY-  MD/QUEEN ANNES
 HV0184  COUNTRY     -  US
 HV0184  USGS QUAD   -  KENT ISLAND (2016)
 HV0184
 HV0184                         *CURRENT SURVEY CONTROL
 HV0184  ______________________________________________________________________
 HV0184* NAD 83(1986) POSITION- 38 57 49.     (N) 076 20 12.     (W)   SCALED
 HV0184* NAVD 88 ORTHO HEIGHT -     4.513 (meters)       14.81  (feet) ADJUSTED
 HV0184  ______________________________________________________________________
 HV0184  GEOID HEIGHT    -        -33.596 (meters)                     GEOID18
 HV0184  DYNAMIC HEIGHT  -          4.511 (meters)       14.80  (feet) COMP
 HV0184  MODELED GRAVITY -    980,079.3   (mgal)                       NAVD 88
 HV0184
 HV0184  VERT ORDER      -  FIRST     CLASS II
 HV0184
 HV0184.The horizontal coordinates were scaled from a map and have
 HV0184.an estimated accuracy of +/- 6 seconds.
 HV0184
 HV0184.The orthometric height was determined by differential leveling and
 HV0184.adjusted by the NATIONAL GEODETIC SURVEY
 HV0184.in June 1991.
 HV0184
 HV0184.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0184.GEOID18 height accuracy estimate available here.
 HV0184
 HV0184.Click photographs - Photos may exist for this station.
 HV0184
 HV0184.The dynamic height is computed by dividing the NAVD 88
 HV0184.geopotential number by the normal gravity value computed on the
 HV0184.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0184.degrees latitude (g = 980.6199 gals.).
 HV0184
 HV0184.The modeled gravity was interpolated from observed gravity values.
 HV0184
 HV0184;                    North         East    Units  Estimated Accuracy
 HV0184;SPC MD       -   144,180.      457,490.      MT  (+/- 180 meters Scaled)
 HV0184
 HV0184_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ841135(NAD 83)
 HV0184
 HV0184                          SUPERSEDED SURVEY CONTROL
 HV0184
 HV0184  NGVD 29 (11/26/84)    4.750  (m)           15.58   (f) ADJUSTED    1 2
 HV0184
 HV0184.Superseded values are not recommended for survey control.
 HV0184
 HV0184.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0184.See file dsdata.pdf to determine how the superseded data were derived.
 HV0184
 HV0184_MARKER: DB = BENCH MARK DISK
 HV0184_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0184+WITH SETTING: INTO GROUND
 HV0184_STAMPING: E 126 1971
 HV0184_MARK LOGO: CGS
 HV0184_PROJECTION: RECESSED 5 CENTIMETERS
 HV0184_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0184+STABILITY: SURFACE MOTION
 HV0184
 HV0184  HISTORY     - Date     Condition        Report By
 HV0184  HISTORY     - 1971     MONUMENTED       NGS
 HV0184  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 HV0184
 HV0184                          STATION DESCRIPTION
 HV0184
 HV0184'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0184'1.6 MI SW FROM STEVENSVILLE.
 HV0184'ABOUT 1.6 MILES SOUTHWEST ALONG STATE HIGHWAY 8 FROM THE
 HV0184'INTERSECTION OF U.S. HIGHWAYS 50 AND 301 AT STEVENSVILLE,
 HV0184'ON THE PROPERTY OF KENT ISLAND AMERICAN LEGION POST NUMBER 278,
 HV0184'72 1/2 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 1.4 FEET
 HV0184'SOUTHEAST OF THE SOUTH CORNER OF THE CONCRETE BLOCK BUILDING, ABOUT
 HV0184'1 FOOT ABOVE THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-FOOT
 HV0184'SECTION OF COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE
 HV0184'PLATE.  THE DISK IS 2 INCHES BELOW THE SURFACE OF THE GROUND
 HV0184'AND IS PROTECTED BY A 4-INCH METAL PIPE THAT IS 1 INCH BELOW
 HV0184'THE SURFACE OF THE GROUND.
 HV0184
 HV0184                          STATION RECOVERY (1983)
 HV0184
 HV0184'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0184'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0110 ***********************************************************************
 HV0110  DESIGNATION -  E 127
 HV0110  PID         -  HV0110
 HV0110  STATE/COUNTY-  MD/TALBOT
 HV0110  COUNTRY     -  US
 HV0110  USGS QUAD   -  EASTON (2016)
 HV0110
 HV0110                         *CURRENT SURVEY CONTROL
 HV0110  ______________________________________________________________________
 HV0110* NAD 83(1986) POSITION- 38 48 36.     (N) 076 04 06.     (W)   SCALED
 HV0110* NAVD 88 ORTHO HEIGHT -    19.041 (meters)       62.47  (feet) ADJUSTED
 HV0110  ______________________________________________________________________
 HV0110  GEOID HEIGHT    -        -34.606 (meters)                     GEOID18
 HV0110  DYNAMIC HEIGHT  -         19.030 (meters)       62.43  (feet) COMP
 HV0110  MODELED GRAVITY -    980,040.2   (mgal)                       NAVD 88
 HV0110
 HV0110  VERT ORDER      -  FIRST     CLASS II
 HV0110
 HV0110.This mark is at Easton/newnam Field Airport (ESN)
 HV0110
 HV0110.The horizontal coordinates were scaled from a map and have
 HV0110.an estimated accuracy of +/- 6 seconds.
 HV0110
 HV0110.The orthometric height was determined by differential leveling and
 HV0110.adjusted by the NATIONAL GEODETIC SURVEY
 HV0110.in August 1994.
 HV0110
 HV0110.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0110.GEOID18 height accuracy estimate available here.
 HV0110
 HV0110.Click photographs - Photos may exist for this station.
 HV0110
 HV0110.The dynamic height is computed by dividing the NAVD 88
 HV0110.geopotential number by the normal gravity value computed on the
 HV0110.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0110.degrees latitude (g = 980.6199 gals.).
 HV0110
 HV0110.The modeled gravity was interpolated from observed gravity values.
 HV0110
 HV0110;                    North         East    Units  Estimated Accuracy
 HV0110;SPC MD       -   127,330.      480,920.      MT  (+/- 180 meters Scaled)
 HV0110
 HV0110_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH072962(NAD 83)
 HV0110
 HV0110                          SUPERSEDED SURVEY CONTROL
 HV0110
 HV0110  NAVD 88 (06/15/91)   19.057  (m)           62.52   (f) SUPERSEDED  1 2
 HV0110  NGVD 29 (11/26/84)   19.292  (m)           63.29   (f) ADJUSTED    1 2
 HV0110
 HV0110.Superseded values are not recommended for survey control.
 HV0110
 HV0110.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0110.See file dsdata.pdf to determine how the superseded data were derived.
 HV0110
 HV0110_MARKER: DB = BENCH MARK DISK
 HV0110_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0110_SP_SET: DOOR FOUNDATION
 HV0110_STAMPING: E 127 1971
 HV0110_MARK LOGO: CGS
 HV0110_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0110_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0110+SATELLITE: SATELLITE OBSERVATIONS - February 22, 2002
 HV0110
 HV0110  HISTORY     - Date     Condition        Report By
 HV0110  HISTORY     - 1971     MONUMENTED       NGS
 HV0110  HISTORY     - 19900607 GOOD             NGS
 HV0110  HISTORY     - 20020222 GOOD             USPSQD
 HV0110
 HV0110                          STATION DESCRIPTION
 HV0110
 HV0110'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0110'3.1 MI N FROM EASTON.
 HV0110'ABOUT 2.8 MILES NORTH ALONG U.S. HIGHWAY 50 FROM THE INTERSECTION
 HV0110'OF STATE HIGHWAY 331 AT EASTON, THENCE 0.3 MILE WEST ALONG A
 HV0110'BLACK TOP ROAD, AT THE EASTON AIRPORT, SET IN THE TOP OF THE
 HV0110'CONCRETE FOUNDATION FOR THE SLIDING DOOR ALONG THE SOUTHEAST SIDE
 HV0110'OF THE MAIN HANGAR, 4.5 FEET SOUTHWEST OF THE EAST CORNER OF THE
 HV0110'HANGAR, 267.5 FEET SOUTHWEST OF BENCH MARK D 127 DESCRIBED AND
 HV0110'LEVEL WITH THE BLACK TOP AREA AROUND THE HANGAR.
 HV0110
 HV0110                          STATION RECOVERY (1990)
 HV0110
 HV0110'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV0110'RECOVERED IN GOOD CONDITION.
 HV0110
 HV0110                          STATION RECOVERY (2002)
 HV0110
 HV0110'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0110'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0539 ***********************************************************************
 HV0539  DESIGNATION -  E 128
 HV0539  PID         -  HV0539
 HV0539  STATE/COUNTY-  MD/ST MARYS
 HV0539  COUNTRY     -  US
 HV0539  USGS QUAD   -  LEONARDTOWN (2016)
 HV0539
 HV0539                         *CURRENT SURVEY CONTROL
 HV0539  ______________________________________________________________________
 HV0539* NAD 83(1986) POSITION- 38 19 19.     (N) 076 42 17.     (W)   SCALED
 HV0539* NAVD 88 ORTHO HEIGHT -    34.005 (meters)      111.56  (feet) ADJUSTED
 HV0539  ______________________________________________________________________
 HV0539  GEOID HEIGHT    -        -33.759 (meters)                     GEOID18
 HV0539  DYNAMIC HEIGHT  -         33.985 (meters)      111.50  (feet) COMP
 HV0539  MODELED GRAVITY -    980,031.4   (mgal)                       NAVD 88
 HV0539
 HV0539  VERT ORDER      -  FIRST     CLASS II
 HV0539
 HV0539.The horizontal coordinates were scaled from a map and have
 HV0539.an estimated accuracy of +/- 6 seconds.
 HV0539
 HV0539.The orthometric height was determined by differential leveling and
 HV0539.adjusted by the NATIONAL GEODETIC SURVEY
 HV0539.in June 1991.
 HV0539
 HV0539.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0539.GEOID18 height accuracy estimate available here.
 HV0539
 HV0539.Click photographs - Photos may exist for this station.
 HV0539
 HV0539.The dynamic height is computed by dividing the NAVD 88
 HV0539.geopotential number by the normal gravity value computed on the
 HV0539.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0539.degrees latitude (g = 980.6199 gals.).
 HV0539
 HV0539.The modeled gravity was interpolated from observed gravity values.
 HV0539
 HV0539;                    North         East    Units  Estimated Accuracy
 HV0539;SPC MD       -    72,780.      425,820.      MT  (+/- 180 meters Scaled)
 HV0539
 HV0539_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH509429(NAD 83)
 HV0539
 HV0539                          SUPERSEDED SURVEY CONTROL
 HV0539
 HV0539  NGVD 29 (11/26/84)   34.246  (m)          112.36   (f) ADJUSTED    1 2
 HV0539
 HV0539.Superseded values are not recommended for survey control.
 HV0539
 HV0539.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0539.See file dsdata.pdf to determine how the superseded data were derived.
 HV0539
 HV0539_MARKER: DB = BENCH MARK DISK
 HV0539_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0539+WITH SETTING: INTO GROUND
 HV0539_STAMPING: E 128 1971
 HV0539_MARK LOGO: CGS
 HV0539_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0539_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0539+STABILITY: SURFACE MOTION
 HV0539
 HV0539  HISTORY     - Date     Condition        Report By
 HV0539  HISTORY     - 1971     MONUMENTED       NGS
 HV0539  HISTORY     - 20020329 GOOD             MDSHA
 HV0539
 HV0539                          STATION DESCRIPTION
 HV0539
 HV0539'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0539'1 MI SE FROM CLEMENTS.
 HV0539'ABOUT 0.95 MILE SOUTHEAST ALONG STATE HIGHWAY 234 FROM THE POST
 HV0539'OFFICE AT CLEMENTS, 0.1 MILE EAST OF THE JUNCTION OF PIN CUSHION
 HV0539'ROAD, 50 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 55 FEET
 HV0539'WEST OF THE CENTER LINE OF A DRIVEWAY LEADING TO A HOUSE, 1 1/2
 HV0539'FEET NORTHWEST OF CABLE POLE NO. 4 1/2, 1.2 FEET WEST OF A METAL
 HV0539'WITNESS POST, 3 FEET BELOW THE LEVEL OF THE HIGHWAY, A DISK ON
 HV0539'THE TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A
 HV0539'METAL BASE PLATE.  THE DISK IS 3 INCHES BELOW THE LEVEL OF THE
 HV0539'GROUND AND ENCASED IN A 6 INCH PIPE 3 INCHES BELOW THE LEVEL
 HV0539'OF THE GROUND.
 HV0539
 HV0539                          STATION RECOVERY (2002)
 HV0539
 HV0539'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0539'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0612 ***********************************************************************
 HV0612  DESIGNATION -  E 129
 HV0612  PID         -  HV0612
 HV0612  STATE/COUNTY-  MD/CHARLES
 HV0612  COUNTRY     -  US
 HV0612  USGS QUAD   -  POPES CREEK (2016)
 HV0612
 HV0612                         *CURRENT SURVEY CONTROL
 HV0612  ______________________________________________________________________
 HV0612* NAD 83(1986) POSITION- 38 24 29.0    (N) 076 57 01.9    (W)   HD_HELD2
 HV0612* NAVD 88 ORTHO HEIGHT -    34.527 (meters)      113.28  (feet) ADJUSTED
 HV0612  ______________________________________________________________________
 HV0612  GEOID HEIGHT    -        -33.406 (meters)                     GEOID18
 HV0612  DYNAMIC HEIGHT  -         34.505 (meters)      113.21  (feet) COMP
 HV0612  MODELED GRAVITY -    980,007.8   (mgal)                       NAVD 88
 HV0612
 HV0612  VERT ORDER      -  FIRST     CLASS II
 HV0612
 HV0612.The horizontal coordinates were established by autonomous hand held GPS
 HV0612.observations and have an estimated accuracy of +/- 10 meters.
 HV0612
 HV0612.The orthometric height was determined by differential leveling and
 HV0612.adjusted by the NATIONAL GEODETIC SURVEY
 HV0612.in June 1991.
 HV0612
 HV0612.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0612.GEOID18 height accuracy estimate available here.
 HV0612
 HV0612.Click photographs - Photos may exist for this station.
 HV0612
 HV0612.The dynamic height is computed by dividing the NAVD 88
 HV0612.geopotential number by the normal gravity value computed on the
 HV0612.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0612.degrees latitude (g = 980.6199 gals.).
 HV0612
 HV0612.The modeled gravity was interpolated from observed gravity values.
 HV0612
 HV0612;                    North         East    Units  Estimated Accuracy
 HV0612;SPC MD       -    82,298.      404,321.      MT  (+/- 10 meters HH2 GPS)
 HV0612
 HV0612_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2969452892(NAD 83)
 HV0612
 HV0612                          SUPERSEDED SURVEY CONTROL
 HV0612
 HV0612  NGVD 29 (11/26/84)   34.767  (m)          114.06   (f) ADJUSTED    1 2
 HV0612
 HV0612.Superseded values are not recommended for survey control.
 HV0612
 HV0612.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0612.See file dsdata.pdf to determine how the superseded data were derived.
 HV0612
 HV0612_MARKER: DB = BENCH MARK DISK
 HV0612_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0612_SP_SET: BRIDGE
 HV0612_STAMPING: E 129 1971
 HV0612_MARK LOGO: CGS
 HV0612_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0612
 HV0612  HISTORY     - Date     Condition        Report By
 HV0612  HISTORY     - 1971     MONUMENTED       NGS
 HV0612  HISTORY     - 20050813 GOOD             GEOCAC
 HV0612
 HV0612                          STATION DESCRIPTION
 HV0612
 HV0612'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0612'2.6 MI N FROM NEWBURG.
 HV0612'ABOUT 0.2 MILE NORTHWEST ALONG STATE HIGHWAY 257 FROM THE POST
 HV0612'OFFICE AT NEWBURG, THENCE 2.2 MILES NORTH ALONG U.S. HIGHWAY 301,
 HV0612'THENCE 0.15 MILE EAST ALONG STATE HIGHWAY 234, AT A CONCRETE
 HV0612'BRIDGE OVER A RAILROAD, SET VERTICALLY IN THE SOUTH FACE OF THE
 HV0612'WEST CONCRETE ABUTMENT OF THE BRIDGE, 24 FEET SOUTH OF THE CENTER
 HV0612'LINE OF THE HIGHWAY, 1 FOOT EAST OF THE WEST END OF THE ABUTMENT
 HV0612'AND ABOUT 1 FOOT BELOW THE BRIDGE SURFACE.
 HV0612
 HV0612                          STATION RECOVERY (2005)
 HV0612
 HV0612'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV0612'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0539 ***********************************************************************
 JV0539  DESIGNATION -  E 130
 JV0539  PID         -  JV0539
 JV0539  STATE/COUNTY-  MD/QUEEN ANNES
 JV0539  COUNTRY     -  US
 JV0539  USGS QUAD   -  LOVE POINT (2017)
 JV0539
 JV0539                         *CURRENT SURVEY CONTROL
 JV0539  ______________________________________________________________________
 JV0539* NAD 83(1986) POSITION- 39 01 55.02   (N) 076 18 40.11   (W)   HD_HELD1
 JV0539* NAVD 88 ORTHO HEIGHT -     5.693 (meters)       18.68  (feet) ADJUSTED
 JV0539  ______________________________________________________________________
 JV0539  GEOID HEIGHT    -        -33.486 (meters)                     GEOID18
 JV0539  DYNAMIC HEIGHT  -          5.690 (meters)       18.67  (feet) COMP
 JV0539  MODELED GRAVITY -    980,090.2   (mgal)                       NAVD 88
 JV0539
 JV0539  VERT ORDER      -  FIRST     CLASS II
 JV0539
 JV0539.The horizontal coordinates were determined by differentially corrected
 JV0539.hand held GPS observations or other comparable positioning techniques
 JV0539.and have an estimated accuracy of +/- 3 meters.
 JV0539
 JV0539.The orthometric height was determined by differential leveling and
 JV0539.adjusted by the NATIONAL GEODETIC SURVEY
 JV0539.in June 1991.
 JV0539
 JV0539.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0539.GEOID18 height accuracy estimate available here.
 JV0539
 JV0539.Click photographs - Photos may exist for this station.
 JV0539
 JV0539.The dynamic height is computed by dividing the NAVD 88
 JV0539.geopotential number by the normal gravity value computed on the
 JV0539.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0539.degrees latitude (g = 980.6199 gals.).
 JV0539
 JV0539.The modeled gravity was interpolated from observed gravity values.
 JV0539
 JV0539;                    North         East    Units  Estimated Accuracy
 JV0539;SPC MD       -   151,778.0     459,643.1     MT  (+/- 3 meters HH1 GPS) 
 JV0539
 JV0539_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8651421139(NAD 83)
 JV0539
 JV0539                          SUPERSEDED SURVEY CONTROL
 JV0539
 JV0539  NGVD 29 (11/26/84)    5.930  (m)           19.46   (f) ADJUSTED    1 2
 JV0539
 JV0539.Superseded values are not recommended for survey control.
 JV0539
 JV0539.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0539.See file dsdata.pdf to determine how the superseded data were derived.
 JV0539
 JV0539_MARKER: DB = BENCH MARK DISK
 JV0539_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0539+WITH SETTING: INTO GROUND
 JV0539_STAMPING: E 130 1971
 JV0539_MARK LOGO: CGS
 JV0539_PROJECTION: RECESSED 5 CENTIMETERS
 JV0539_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0539_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0539+STABILITY: SURFACE MOTION
 JV0539_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0539+SATELLITE: SATELLITE OBSERVATIONS - April 22, 2008
 JV0539
 JV0539  HISTORY     - Date     Condition        Report By
 JV0539  HISTORY     - 1971     MONUMENTED       NGS
 JV0539  HISTORY     - 19991231 GOOD             USPSQD
 JV0539  HISTORY     - 20010331 MARK NOT FOUND   NGS
 JV0539  HISTORY     - 20051122 GOOD             NGS
 JV0539  HISTORY     - 20080422 GOOD             NGS
 JV0539
 JV0539                          STATION DESCRIPTION
 JV0539
 JV0539'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0539'3.6 MI NE FROM STEVENSVILLE.
 JV0539'ABOUT 3.65 MILES NORTHEAST ALONG STATE HIGHWAY 18 FROM THE POST
 JV0539'OFFICE AT STEVENSVILLE, AT LOVE POINT, AT THE JUNCTION OF PIER
 JV0539'AVENUE AND 3 RD STREET, ABOUT 216 FEET SOUTH OF THE NORTH END
 JV0539'OF STATE HIGHWAY 18 AT IT END, 92.5 FEET SOUTHEAST OF THE SOUTHEAST
 JV0539'PORCH CORNER FOR A 1 1/2 STORY HOUSE, 48 FEET SOUTHWEST OF THE
 JV0539'APPROXIMATE CENTER OF THE JUNCTION, 17 1/2 FEET WEST OF THE
 JV0539'CENTER LINE OF 3 RD STREET, 11 FEET SOUTH OF POWER LINE POLE
 JV0539'NO. 11 D 3-1 WITH TWO GUY WIRES, 1.8 FEET NORTHWEST OF THE GROUND
 JV0539'END OF A GUY WIRE, 1.5 FEET NORTH OF A METAL WITNESS POST, ABOUT
 JV0539'LEVEL WITH 3 RD STREET, A DISK ON THE TOP OF A 4 FOOT COPPER COATED
 JV0539'STEEL ROD 2 INCHES BELOW THE LEVEL OF THE GROUND AND ENCASED IN A
 JV0539'4 INCH STEEL PIPE THAT IS FLUSH WITH THE GROUND.
 JV0539
 JV0539                          STATION RECOVERY (1999)
 JV0539
 JV0539'RECOVERY NOTE BY US POWER SQUADRON 1999 (JKW)
 JV0539'POLE 11 D-31 REPLACED BY DPL 26700/17623.  MARK IS ABOUT 2 INCHES
 JV0539'FELOW GROUND LEVEL.
 JV0539
 JV0539                          STATION RECOVERY (2001)
 JV0539
 JV0539'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV0539'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 JV0539
 JV0539                          STATION RECOVERY (2005)
 JV0539
 JV0539'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (JRO)
 JV0539'THE MARK IS ON STATE HIGHWAY R.O.W., 3.95 MILES NE AND THEN NORTH
 JV0539'ALONG SR 8 AND THEN SR  18, OR 3.65 MILES NE AND THEN NE AND THEN
 JV0539'NORTH ALONG SR 18 FROM THE STOPLIGHT AT  STEVENSVILLE, JUST SOUTH OF
 JV0539'THE T-INTESECTION WITH PIER AVENUE TO EAST.
 JV0539'
 JV0539'IT IS 81.0 FT SOUTH OF THE SOUTH LINE OF HOUSE NUMBER 2401, 52.0 FT SW
 JV0539'AND ACROSS RD FROM  POLE WITH SEVERAL NUMBERS--11D OVER 117 (ALSO
 JV0539'26805 OVER 17626), 39.0 FT WEST AND ACROSS  RT 18 FROM 4 INCH METAL
 JV0539'POST FOR AN OLD GROCERY STORE SIGN, 16 FT WEST OF YELLOW LINES IN
 JV0539'APPROXIMATE CENTER OF RT 18, 11.7 FT SOUTH OF POLE NUMBER 150 (ALSO
 JV0539'26799 OVER 17623), 9.5 FT  SE OF GROUND END OF WESTERLY GUY WIRE FOR
 JV0539'POLE 150, 7.0 FTNNE OF GROUND END OF  SOUTHERLY GUY WIRE, 4.6 FT NE OF
 JV0539'18 INCH PINE TREE, 1.5 FT NORTH OF METAL WITNESS POST, AND  ABOUT
 JV0539'LEVEL WITH ROAD. THE DISK IS RECESSED ABOUT 4 CM WITHIN THE STEEL PIPE
 JV0539'SURROUNDING IT.
 JV0539
 JV0539                          STATION RECOVERY (2008)
 JV0539
 JV0539'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV0539'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0889 ***********************************************************************
 HV0889  DESIGNATION -  E 131
 HV0889  PID         -  HV0889
 HV0889  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0889  COUNTRY     -  US
 HV0889  USGS QUAD   -  UPPER MARLBORO (2016)
 HV0889
 HV0889                         *CURRENT SURVEY CONTROL
 HV0889  ______________________________________________________________________
 HV0889* NAD 83(2011) POSITION- 38 48 46.81335(N) 076 47 44.43050(W)   ADJUSTED
 HV0889* NAD 83(2011) ELLIP HT-     1.379 (meters)        (06/27/12)   ADJUSTED
 HV0889* NAD 83(2011) EPOCH   -  2010.00
 HV0889* NAVD 88 ORTHO HEIGHT -    34.095 (meters)      111.86  (feet) ADJUSTED
 HV0889  ______________________________________________________________________
 HV0889  GEOID HEIGHT    -        -32.782 (meters)                     GEOID18
 HV0889  NAD 83(2011) X  -  1,136,723.260 (meters)                     COMP
 HV0889  NAD 83(2011) Y  - -4,844,799.375 (meters)                     COMP
 HV0889  NAD 83(2011) Z  -  3,976,163.708 (meters)                     COMP
 HV0889  LAPLACE CORR    -         -6.25  (seconds)                    DEFLEC18
 HV0889  DYNAMIC HEIGHT  -         34.076 (meters)      111.80  (feet) COMP
 HV0889  MODELED GRAVITY -    980,070.5   (mgal)                       NAVD 88
 HV0889
 HV0889  VERT ORDER      -  FIRST     CLASS II
 HV0889
 HV0889  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0889  Standards:
 HV0889         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0889            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0889  -------------------------------------------------------------------
 HV0889  NETWORK    1.04   2.31           0.44   0.41   1.18     -0.00674408
 HV0889  -------------------------------------------------------------------
 HV0889  Click here for local accuracies and other accuracy information.
 HV0889
 HV0889.The horizontal coordinates were established by GPS observations
 HV0889.and adjusted by the National Geodetic Survey in June 2012.
 HV0889
 HV0889.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0889.been affixed to the stable North American tectonic plate. See 
 HV0889.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0889
 HV0889.The horizontal coordinates are valid at the epoch date displayed above
 HV0889.which is a decimal equivalence of Year/Month/Day.
 HV0889
 HV0889.The orthometric height was determined by differential leveling and
 HV0889.adjusted by the NATIONAL GEODETIC SURVEY
 HV0889.in August 2020.
 HV0889
 HV0889.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0889.GEOID18 height accuracy estimate available here.
 HV0889
 HV0889.Click photographs - Photos may exist for this station.
 HV0889
 HV0889.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0889
 HV0889.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0889
 HV0889.The ellipsoidal height was determined by GPS observations
 HV0889.and is referenced to NAD 83.
 HV0889
 HV0889.The dynamic height is computed by dividing the NAVD 88
 HV0889.geopotential number by the normal gravity value computed on the
 HV0889.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0889.degrees latitude (g = 980.6199 gals.).
 HV0889
 HV0889.The modeled gravity was interpolated from observed gravity values.
 HV0889
 HV0889. The following values were computed from the NAD 83(2011) position.
 HV0889
 HV0889;                    North         East     Units Scale Factor Converg.
 HV0889;SPC MD       -   127,267.946   417,745.528   MT  0.99995045   +0 07 41.7
 HV0889;SPC MD       -   417,544.92  1,370,553.45   sFT  0.99995045   +0 07 41.7
 HV0889;UTM  18      - 4,297,557.280   344,095.365   MT  0.99989931   -1 07 32.6
 HV0889
 HV0889!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0889!SPC MD       -   0.99999978  x   0.99995045  =   0.99995023
 HV0889!UTM  18      -   0.99999978  x   0.99989931  =   0.99989909
 HV0889
 HV0889_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4409597557(NAD 83)
 HV0889
 HV0889                          SUPERSEDED SURVEY CONTROL
 HV0889
 HV0889  NAD 83(2007)-  38 48 46.81366(N)    076 47 44.43161(W) AD(2002.00) 0
 HV0889  ELLIP H (02/10/07)    1.365  (m)                       GP(2002.00)    
 HV0889  ELLIP H (08/30/02)    1.359  (m)                       GP(       ) 4 2
 HV0889  NAD 83(1993)-  38 48 46.81387(N)    076 47 44.43186(W) AD(       ) 1
 HV0889  ELLIP H (11/14/94)    1.360  (m)                       GP(       ) 4 2
 HV0889  ELLIP H (09/09/94)    1.345  (m)                       GP(       ) 4 1
 HV0889  NAD 83(1991)-  38 48 46.81388(N)    076 47 44.43223(W) AD(       ) 1
 HV0889  NAVD 88              34.10   (m)          111.9    (f) LEVELING    3  
 HV0889  NAVD 88 (06/15/91)   34.098  (m)          111.87   (f) SUPERSEDED  1 1
 HV0889  NGVD 29 (11/26/84)   34.335  (m)          112.65   (f) ADJUSTED    1 1
 HV0889
 HV0889.Superseded values are not recommended for survey control.
 HV0889
 HV0889.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0889.See file dsdata.pdf to determine how the superseded data were derived.
 HV0889
 HV0889_MARKER: DB = BENCH MARK DISK
 HV0889_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0889_STAMPING: E 131 1971
 HV0889_MARK LOGO: CGS
 HV0889_PROJECTION: FLUSH
 HV0889_MAGNETIC: I = MARKER IS A STEEL ROD
 HV0889_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0889_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0889+SATELLITE: SATELLITE OBSERVATIONS - October 18, 2019
 HV0889
 HV0889  HISTORY     - Date     Condition        Report By
 HV0889  HISTORY     - 1971     MONUMENTED       NGS
 HV0889  HISTORY     - 19930331 GOOD             MSI
 HV0889  HISTORY     - 19990526 GOOD             GEOMET
 HV0889  HISTORY     - 20010530 GOOD             DEWDAV
 HV0889  HISTORY     - 20050817 GOOD             INDIV
 HV0889  HISTORY     - 20070323 GOOD             INDIV
 HV0889  HISTORY     - 20120923 GOOD             WOOLPT
 HV0889  HISTORY     - 20131202 GOOD             INDIV
 HV0889  HISTORY     - 20160815 GOOD             INDIV
 HV0889  HISTORY     - 20170609 MARK NOT FOUND   NGS
 HV0889  HISTORY     - 20191018 GOOD             ARCSHE
 HV0889
 HV0889                          STATION DESCRIPTION
 HV0889
 HV0889'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0889'1.8 MI W FROM UPPER MARLBORO.
 HV0889'ABOUT 1.8 MILES WEST ALONG STATE HIGHWAY 4 FROM THE OLD CRAIN
 HV0889'HIGHWAY OVERPASS AT UPPER MARLBORO, 131 FEET EAST OF THE CENTER
 HV0889'OF THE MORE EASTERLY OF TWO STEEL TOWERS FOR A POWER LINE,
 HV0889'99 1/2 FEET SOUTH OF THE CENTER LINE OF THE NORTH LANES OF THE
 HV0889'HIGHWAY, 35 FEET NORTH OF THE CENTER LINE OF THE SOUTH LANES OF
 HV0889'THE HIGHWAY, 2.0 FEET EAST OF A METAL POST AT THE WEST END OF A
 HV0889'METAL GUARDRAIL, 0.8 FOOT NORTH OF THE GUARDRAIL, 1.0 FOOT WEST
 HV0889'OF A METAL WITNESS POST, ABOUT LEVEL WITH THE SOUTH LANES OF THE
 HV0889'HIGHWAY, ABOUT 5 FEET ABOVE THE LEVEL OF THE NORTH LANES OF THE
 HV0889'HIGHWAY, AND ON THE TOP OF A COPPER COATED ROD WHICH IS LEVEL
 HV0889'WITH THE SURFACE OF THE GROUND AND IS PROTECTED BY A 6-INCH
 HV0889'TILE WHICH PROJECTS 1 INCH.  THE ROD WAS DRIVEN TO REFUSAL AT
 HV0889'A DEPTH OF 39 FEET.
 HV0889
 HV0889                          STATION RECOVERY (1993)
 HV0889
 HV0889'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV0889'RECOVERED IN GOOD CONDITION.
 HV0889
 HV0889                          STATION RECOVERY (1999)
 HV0889
 HV0889'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (KO)
 HV0889'RECOVERED AS DESCRIBED.
 HV0889
 HV0889                          STATION RECOVERY (2001)
 HV0889
 HV0889'RECOVERY NOTE BY DEWBERRY DAVIS 2001 (CSW)
 HV0889'RECOVERED IN GOOD CONDITION.
 HV0889
 HV0889                          STATION RECOVERY (2005)
 HV0889
 HV0889'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2005 (JFS)
 HV0889'RECOVERED AS DESCRIBED
 HV0889
 HV0889                          STATION RECOVERY (2007)
 HV0889
 HV0889'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (JFS)
 HV0889'RECOVERED AS DESCRIBED
 HV0889
 HV0889                          STATION RECOVERY (2012)
 HV0889
 HV0889'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 HV0889'RECOVERED IN GOOD CONDITION.
 HV0889
 HV0889                          STATION RECOVERY (2013)
 HV0889
 HV0889'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (WRA)
 HV0889'DESCRIPTION IS ADEQUATE
 HV0889
 HV0889                          STATION RECOVERY (2016)
 HV0889
 HV0889'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2016 (WRA)
 HV0889'RECOVERED AS DESCRIBED
 HV0889'DESCRIPTION IS ADEQUATE
 HV0889
 HV0889                          STATION RECOVERY (2017)
 HV0889
 HV0889'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 HV0889'MARK NOT FOUND.
 HV0889
 HV0889                          STATION RECOVERY (2019)
 HV0889
 HV0889'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HV0889'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1598 ***********************************************************************
 HV1598  DESIGNATION -  E 132
 HV1598  PID         -  HV1598
 HV1598  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1598  COUNTRY     -  US
 HV1598  USGS QUAD   -  DEALE (2016)
 HV1598
 HV1598                         *CURRENT SURVEY CONTROL
 HV1598  ______________________________________________________________________
 HV1598* NAD 83(1986) POSITION- 38 48 15.11   (N) 076 35 54.67   (W)   HD_HELD1
 HV1598* NAVD 88 ORTHO HEIGHT -    37.080 (meters)      121.65  (feet) ADJUSTED
 HV1598  ______________________________________________________________________
 HV1598  GEOID HEIGHT    -        -33.377 (meters)                     GEOID18
 HV1598  DYNAMIC HEIGHT  -         37.059 (meters)      121.58  (feet) COMP
 HV1598  MODELED GRAVITY -    980,054.2   (mgal)                       NAVD 88
 HV1598
 HV1598  VERT ORDER      -  FIRST     CLASS II
 HV1598
 HV1598.The horizontal coordinates were determined by differentially corrected
 HV1598.hand held GPS observations or other comparable positioning techniques
 HV1598.and have an estimated accuracy of +/- 3 meters.
 HV1598
 HV1598.The orthometric height was determined by differential leveling and
 HV1598.adjusted by the NATIONAL GEODETIC SURVEY
 HV1598.in June 1991.
 HV1598
 HV1598.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1598.GEOID18 height accuracy estimate available here.
 HV1598
 HV1598.Click photographs - Photos may exist for this station.
 HV1598
 HV1598.The dynamic height is computed by dividing the NAVD 88
 HV1598.geopotential number by the normal gravity value computed on the
 HV1598.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1598.degrees latitude (g = 980.6199 gals.).
 HV1598
 HV1598.The modeled gravity was interpolated from observed gravity values.
 HV1598
 HV1598;                    North         East    Units  Estimated Accuracy
 HV1598;SPC MD       -   126,347.2     434,872.6     MT  (+/- 3 meters HH1 GPS) 
 HV1598
 HV1598_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6119696262(NAD 83)
 HV1598
 HV1598                          SUPERSEDED SURVEY CONTROL
 HV1598
 HV1598  NGVD 29 (11/26/84)   37.319  (m)          122.44   (f) ADJUSTED    1 2
 HV1598
 HV1598.Superseded values are not recommended for survey control.
 HV1598
 HV1598.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1598.See file dsdata.pdf to determine how the superseded data were derived.
 HV1598
 HV1598_MARKER: DB = BENCH MARK DISK
 HV1598_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV1598+WITH SETTING: INTO GROUND
 HV1598_STAMPING: E 132 1971
 HV1598_MARK LOGO: CGS
 HV1598_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1598+STABILITY: SURFACE MOTION
 HV1598
 HV1598  HISTORY     - Date     Condition        Report By
 HV1598  HISTORY     - 1971     MONUMENTED       NGS
 HV1598  HISTORY     - 1972     GOOD             NGS
 HV1598  HISTORY     - 19910122 GOOD             NGS
 HV1598
 HV1598                          STATION DESCRIPTION
 HV1598
 HV1598'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1598'2.2 MI SE FROM LOTHIAN.
 HV1598'ABOUT 0.2 MILE SOUTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV1598'POST OFFICE AT LOTHIAN, THENCE 2.05 MILES SOUTHEAST ALONG STATE
 HV1598'HIGHWAY 2, 1.0 MILE NORTH OF THE ST JAMES CHURCH AND CEMETERY,
 HV1598'121 FEET SOUTH OF THE CENTER LINE OF THE OLD HIGHWAY, 68.3 FEET
 HV1598'EAST OF THE CENTER LINE OF STATE HIGHWAY 2, 10 1/2 FEET SOUTHEAST
 HV1598'OF POWER LINE POLE NO. 334 183, 2.2 FEET NORTH OF THE GROUND END
 HV1598'OF A GUY WIRE FOR POWER LINE POLE, 0.9 FOOT WEST OF A METAL
 HV1598'WITNESS POST, 1 FOOT BELOW THE LEVEL OF THE HIGHWAY, AND ON THE
 HV1598'TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A
 HV1598'METAL BASE PLATE.  THE DISK PROJECTS ONE INCH ABOVE THE LEVEL
 HV1598'OF THE GROUND AND ENCASED IN A 6 INCH STEEL PIPE THAT PROJECTS
 HV1598'2 INCHES ABOVE THE LEVEL OF THE GROUND.
 HV1598
 HV1598                          STATION RECOVERY (1991)
 HV1598
 HV1598'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV1598'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7952 ***********************************************************************
 HV7952  DESIGNATION -  E 133 RESET
 HV7952  PID         -  HV7952
 HV7952  STATE/COUNTY-  MD/CALVERT
 HV7952  COUNTRY     -  US
 HV7952  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV7952
 HV7952                         *CURRENT SURVEY CONTROL
 HV7952  ______________________________________________________________________
 HV7952* NAD 83(1986) POSITION- 38 31 09.     (N) 076 34 18.     (W)   SCALED
 HV7952* NAVD 88 ORTHO HEIGHT -    26.57  (meters)       87.2   (feet) RESET
 HV7952  ______________________________________________________________________
 HV7952  GEOID HEIGHT    -        -33.921 (meters)                     GEOID18
 HV7952  VERT ORDER      -  THIRD
 HV7952
 HV7952.The horizontal coordinates were scaled from a map and have
 HV7952.an estimated accuracy of +/- 6 seconds.
 HV7952
 HV7952.The orthometric height was computed from unverified reset data.
 HV7952
 HV7952.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7952.GEOID18 height accuracy estimate available here.
 HV7952
 HV7952.Click photographs - Photos may exist for this station.
 HV7952
 HV7952;                    North         East    Units  Estimated Accuracy
 HV7952;SPC MD       -    94,720.      437,350.      MT  (+/- 180 meters Scaled)
 HV7952
 HV7952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH629645(NAD 83)
 HV7952
 HV7952                          SUPERSEDED SURVEY CONTROL
 HV7952
 HV7952  NGVD 29 (??/??/??)   26.82   (m)           88.0    (f) RESET       3  
 HV7952
 HV7952.Superseded values are not recommended for survey control.
 HV7952
 HV7952.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7952.See file dsdata.pdf to determine how the superseded data were derived.
 HV7952
 HV7952_MARKER: DV = VERTICAL CONTROL DISK
 HV7952_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7952_STAMPING: E 133 RESET 1975
 HV7952_MARK LOGO: NGS
 HV7952_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV7952_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7952+STABILITY: SURFACE MOTION
 HV7952
 HV7952  HISTORY     - Date     Condition        Report By
 HV7952  HISTORY     - 1975     MONUMENTED       NGS
 HV7952  HISTORY     - 19950625 MARK NOT FOUND   USPSQD
 HV7952
 HV7952                          STATION DESCRIPTION
 HV7952
 HV7952'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7952'1.55 MILE (2.49 KM) ALONG ROUTE 4 AND 2 FROM SET 231, 2 AND 4 IN
 HV7952'PRINCE FREDERICK.  75 YARDS NORTH OF INT WITH T 6 S.  STANDARD DISK
 HV7952'STAMPED E 133 RESET 1975 SET IN 10 - INCH ROUND POST FLUSH, 117 FEET
 HV7952'(35.7 M) NORTH OF SOUTH EDGE WOODS, 92 FEET (28.0 M) EAST CENTERLINE
 HV7952'NORTH BOUND LANE 4 AND 2, 14 FEET (4.3 M) SOUTH 12-INCH PINE, 3 FEET
 HV7952'(0.9 M) WEST OF WEST EDGE WOODS, 1.4 FEET (0.4 M) WEST WITNESS POST.
 HV7952
 HV7952                          STATION RECOVERY (1995)
 HV7952
 HV7952'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV7952'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0339 ***********************************************************************
 HV0339  DESIGNATION -  E 134
 HV0339  PID         -  HV0339
 HV0339  STATE/COUNTY-  MD/CALVERT
 HV0339  COUNTRY     -  US
 HV0339  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0339
 HV0339                         *CURRENT SURVEY CONTROL
 HV0339  ______________________________________________________________________
 HV0339* NAD 83(1986) POSITION- 38 20 38.8    (N) 076 27 51.5    (W)   HD_HELD2
 HV0339* NAVD 88 ORTHO HEIGHT -     7.051 (meters)       23.13  (feet) ADJUSTED
 HV0339  ______________________________________________________________________
 HV0339  GEOID HEIGHT    -        -34.341 (meters)                     GEOID18
 HV0339  DYNAMIC HEIGHT  -          7.047 (meters)       23.12  (feet) COMP
 HV0339  MODELED GRAVITY -    980,023.8   (mgal)                       NAVD 88
 HV0339
 HV0339  VERT ORDER      -  FIRST     CLASS II
 HV0339
 HV0339.The horizontal coordinates were established by autonomous hand held GPS
 HV0339.observations and have an estimated accuracy of +/- 10 meters.
 HV0339
 HV0339.The orthometric height was determined by differential leveling and
 HV0339.adjusted by the NATIONAL GEODETIC SURVEY
 HV0339.in June 1991.
 HV0339
 HV0339.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0339.GEOID18 height accuracy estimate available here.
 HV0339
 HV0339.Click photographs - Photos may exist for this station.
 HV0339
 HV0339.The dynamic height is computed by dividing the NAVD 88
 HV0339.geopotential number by the normal gravity value computed on the
 HV0339.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0339.degrees latitude (g = 980.6199 gals.).
 HV0339
 HV0339.The modeled gravity was interpolated from observed gravity values.
 HV0339
 HV0339;                    North         East    Units  Estimated Accuracy
 HV0339;SPC MD       -    75,337.      446,830.      MT  (+/- 10 meters HH2 GPS)
 HV0339
 HV0339_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7203745010(NAD 83)
 HV0339
 HV0339                          SUPERSEDED SURVEY CONTROL
 HV0339
 HV0339  NGVD 29 (11/26/84)    7.296  (m)           23.94   (f) ADJUSTED    1 2
 HV0339
 HV0339.Superseded values are not recommended for survey control.
 HV0339
 HV0339.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0339.See file dsdata.pdf to determine how the superseded data were derived.
 HV0339
 HV0339_MARKER: DB = BENCH MARK DISK
 HV0339_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0339_STAMPING: E 134 1971
 HV0339_MARK LOGO: CGS
 HV0339_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0339
 HV0339  HISTORY     - Date     Condition        Report By
 HV0339  HISTORY     - 1971     MONUMENTED       NGS
 HV0339  HISTORY     - 1985     GOOD             NGS
 HV0339  HISTORY     - 19950812 MARK NOT FOUND   USPSQD
 HV0339
 HV0339                          STATION DESCRIPTION
 HV0339
 HV0339'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0339'1.6 MI N FROM SOLOMONS.
 HV0339'ABOUT 1.55 MILES NORTH ALONG STATE HIGHWAY 4 AND 2 FROM THE
 HV0339'METHODIST CHURCH AT SOLOMONS, AT THE INTERSECTION OF NEWTOWN ROAD
 HV0339'LEADING NORTHEAST AND A BLACK TOP ROAD LEADING WEST THRU THE
 HV0339'U.S. NAVAL RESERVATION, NEAR THE NORTHEAST CORNER OF A STEEL FENCE
 HV0339'AROUND THE RESERVATION, 68 1/2 FEET WEST OF THE CENTER LINE OF THE
 HV0339'HIGHWAYS, 18 1/2 FEET SOUTH OF THE CENTER LINE OF THE BLACK TOP
 HV0339'ROAD, 21.2 FEET WEST OF THE NORTHEAST CORNER OF THE STEEL FENCE,
 HV0339'1 FOOT NORTH OF THE FENCE, 1 FOOT NORTH OF A METAL WITNESS POST,
 HV0339'ABOUT LEVEL WITH THE HIGHWAY AND IS A DISK ON THE TOP OF A
 HV0339'COPPER COATED STEEL ROAD THAT PROJECTS 1 INCH ABOVE THE LEVEL OF
 HV0339'THE GROUND AND PROTECTED BY A 6 INCH STEEL PIPE THAT PROJECTS 2
 HV0339'INCHES ABOVE THE LEVEL OF THE GROUND.  THE ROD WAS DRIVEN TO
 HV0339'REFUSAL AT A DEPTH OF 59 FEET.
 HV0339
 HV0339                          STATION RECOVERY (1985)
 HV0339
 HV0339'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985
 HV0339'RECOVERED IN GOOD CONDITION.
 HV0339
 HV0339                          STATION RECOVERY (1995)
 HV0339
 HV0339'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0339'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0474 ***********************************************************************
 HU0474  DESIGNATION -  E 135
 HU0474  PID         -  HU0474
 HU0474  STATE/COUNTY-  MD/SOMERSET
 HU0474  COUNTRY     -  US
 HU0474  USGS QUAD   -  EDEN (2016)
 HU0474
 HU0474                         *CURRENT SURVEY CONTROL
 HU0474  ______________________________________________________________________
 HU0474* NAD 83(1986) POSITION- 38 16 06.2    (N) 075 39 37.2    (W)   HD_HELD2
 HU0474* NAVD 88 ORTHO HEIGHT -     6.380 (meters)       20.93  (feet) ADJUSTED
 HU0474  ______________________________________________________________________
 HU0474  GEOID HEIGHT    -        -35.937 (meters)                     GEOID18
 HU0474  DYNAMIC HEIGHT  -          6.376 (meters)       20.92  (feet) COMP
 HU0474  MODELED GRAVITY -    979,994.7   (mgal)                       NAVD 88
 HU0474
 HU0474  VERT ORDER      -  FIRST     CLASS II
 HU0474
 HU0474.The horizontal coordinates were established by autonomous hand held GPS
 HU0474.observations and have an estimated accuracy of +/- 10 meters.
 HU0474
 HU0474.The orthometric height was determined by differential leveling and
 HU0474.adjusted by the NATIONAL GEODETIC SURVEY
 HU0474.in June 1991.
 HU0474
 HU0474.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0474.GEOID18 height accuracy estimate available here.
 HU0474
 HU0474.Click photographs - Photos may exist for this station.
 HU0474
 HU0474.The dynamic height is computed by dividing the NAVD 88
 HU0474.geopotential number by the normal gravity value computed on the
 HU0474.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0474.degrees latitude (g = 980.6199 gals.).
 HU0474
 HU0474.The modeled gravity was interpolated from observed gravity values.
 HU0474
 HU0474;                    North         East    Units  Estimated Accuracy
 HU0474;SPC MD       -    67,654.      517,233.      MT  (+/- 10 meters HH2 GPS)
 HU0474
 HU0474_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4223635800(NAD 83)
 HU0474
 HU0474                          SUPERSEDED SURVEY CONTROL
 HU0474
 HU0474  NGVD 29 (11/26/84)    6.637  (m)           21.77   (f) ADJUSTED    1 2
 HU0474
 HU0474.Superseded values are not recommended for survey control.
 HU0474
 HU0474.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0474.See file dsdata.pdf to determine how the superseded data were derived.
 HU0474
 HU0474_MARKER: DB = BENCH MARK DISK
 HU0474_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU0474+WITH SETTING: INTO GROUND
 HU0474_STAMPING: E 135 1972
 HU0474_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0474+STABILITY: SURFACE MOTION
 HU0474
 HU0474  HISTORY     - Date     Condition        Report By
 HU0474  HISTORY     - 1972     MONUMENTED       NGS
 HU0474
 HU0474                          STATION DESCRIPTION
 HU0474
 HU0474'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0474'5 MI NE FROM PRINCESS ANNE.
 HU0474'ABOUT 4.95 MILES NORTHEAST ALONG SOMERSET AVENUE AND U.S. HIGHWAY
 HU0474'13 FROM THE JUNCTION OF STATE HIGHWAY 363 (PRINCE WILLIAM STREET)
 HU0474'AT PRINCESS ANNE, 1.05 MILE SOUTHWEST OF A BLACKTOP ROAD CROSSING
 HU0474'AT EDEN, ABOUT 4.3 MILES SOUTHWEST ALONG THE PENN CENTRAL
 HU0474'RAILROAD FROM THE CROSSING OF MAIN STREET AT FRUITLAND, IN THE
 HU0474'U.S. HIGHWAY 13 MEDIAN, 116.5 FEET NORTHWEST OF AND ACROSS THE
 HU0474'NORTHBOUND LANE OF THE HIGHWAY FROM THE NORTHWEST RAIL OF THE
 HU0474'PENN CENTRAL RAILROAD, 218 FEET NORTH OF AND ACROSS THE NORTHBOUND
 HU0474'LANE OF THE HIGHWAY FROM MILEPOST 14, 64 1/2 FEET NORTHEAST OF THE
 HU0474'CENTER LINE OF A PAVED CROSSOVER ROAD, 45 FEET NORTHWEST OF THE
 HU0474'CENTER LINE OF THE NORTHBOUND LANE OF THE HIGHWAY, 1.3 FEET
 HU0474'SOUTHWEST OF A METAL WITNESS POST, AND ON THE TOP OF A 4 FOOT
 HU0474'COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.
 HU0474'THE DISK PROJECTS 3 INCHES ABOVE THE LEVEL OF THE GROUND AND
 HU0474'ENCASED IN A 6 INCH METAL PIPE THAT PROJECTS 4 INCHES ABOVE THE
 HU0474'LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7798 ***********************************************************************
 HV7798  DESIGNATION -  E 136
 HV7798  PID         -  HV7798
 HV7798  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7798  COUNTRY     -  US
 HV7798  USGS QUAD   -  BOWIE (2016)
 HV7798
 HV7798                         *CURRENT SURVEY CONTROL
 HV7798  ______________________________________________________________________
 HV7798* NAD 83(1986) POSITION- 38 54 32.     (N) 076 43 06.     (W)   SCALED
 HV7798* NAVD 88 ORTHO HEIGHT -    42.608 (meters)      139.79  (feet) ADJUSTED
 HV7798  ______________________________________________________________________
 HV7798  GEOID HEIGHT    -        -32.845 (meters)                     GEOID18
 HV7798  DYNAMIC HEIGHT  -         42.584 (meters)      139.71  (feet) COMP
 HV7798  MODELED GRAVITY -    980,076.0   (mgal)                       NAVD 88
 HV7798
 HV7798  VERT ORDER      -  FIRST     CLASS II
 HV7798
 HV7798.The horizontal coordinates were scaled from a map and have
 HV7798.an estimated accuracy of +/- 6 seconds.
 HV7798
 HV7798.The orthometric height was determined by differential leveling and
 HV7798.adjusted by the NATIONAL GEODETIC SURVEY
 HV7798.in June 1991.
 HV7798
 HV7798.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7798.GEOID18 height accuracy estimate available here.
 HV7798
 HV7798.Click photographs - Photos may exist for this station.
 HV7798
 HV7798.The dynamic height is computed by dividing the NAVD 88
 HV7798.geopotential number by the normal gravity value computed on the
 HV7798.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7798.degrees latitude (g = 980.6199 gals.).
 HV7798
 HV7798.The modeled gravity was interpolated from observed gravity values.
 HV7798
 HV7798;                    North         East    Units  Estimated Accuracy
 HV7798;SPC MD       -   137,930.      424,430.      MT  (+/- 180 meters Scaled)
 HV7798
 HV7798_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ510080(NAD 83)
 HV7798
 HV7798                          SUPERSEDED SURVEY CONTROL
 HV7798
 HV7798  NGVD 29 (11/26/84)   42.842  (m)          140.56   (f) ADJUSTED    1 2
 HV7798
 HV7798.Superseded values are not recommended for survey control.
 HV7798
 HV7798.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7798.See file dsdata.pdf to determine how the superseded data were derived.
 HV7798
 HV7798_MARKER: DV = VERTICAL CONTROL DISK
 HV7798_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV7798_STAMPING: E 136 1975
 HV7798_MARK LOGO: NGS
 HV7798_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7798_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7798+SATELLITE: SATELLITE OBSERVATIONS - June 27, 1990
 HV7798
 HV7798  HISTORY     - Date     Condition        Report By
 HV7798  HISTORY     - 1975     MONUMENTED       NGS
 HV7798  HISTORY     - 19900627 GOOD             NGS
 HV7798  HISTORY     - 20040303 MARK NOT FOUND   URS
 HV7798
 HV7798                          STATION DESCRIPTION
 HV7798
 HV7798'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7798'0.15 MI EAST FROM IN BOWIE.
 HV7798'0.15 MILES EAST ALONG POINTER RIDGE DRIVE FROM THE BOWIE VOLUNTEER
 HV7798'FIRE DEPARTMENT AND RESCUE SQUAD NO 3 BUILDING TO THE INTERSECTION OF
 HV7798'U.S. HIGHWAY 301. AT POINTER RIDGE PLAZA IN TRAFFIC ISLAND IN FRONT OF
 HV7798'A MOBIL GAS STATION. 61 FEET SOUTH OF THE CENTERLINE POINTER RIDGE
 HV7798'DRIVE. 59 FEET WEST OF THE CENTERLINE OF THE SOUTHBOUND LANES OF U.S.
 HV7798'HIGHWAY 301. 43.0 FEET SOUTHWEST OF THE CORNER OF POINTER RIDGE DRIVE
 HV7798'AND U.S. HIGHWAY 301. 42 FEET SOUTHEAST OF A LIGHT POST. 40.3 FEET
 HV7798'NORTHWEST OF A LIGHT POST.
 HV7798
 HV7798                          STATION RECOVERY (1990)
 HV7798
 HV7798'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV7798'RECOVERED IN GOOD CONDITION.
 HV7798
 HV7798                          STATION RECOVERY (2004)
 HV7798
 HV7798'RECOVERY NOTE BY URS COMPANY 2004
 HV7798'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3821 ***********************************************************************
 JV3821  DESIGNATION -  E 137
 JV3821  PID         -  JV3821
 JV3821  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV3821  COUNTRY     -  US
 JV3821  USGS QUAD   -  ODENTON (2016)
 JV3821
 JV3821                         *CURRENT SURVEY CONTROL
 JV3821  ______________________________________________________________________
 JV3821* NAD 83(1986) POSITION- 39 04 05.     (N) 076 38 17.     (W)   SCALED
 JV3821* NAVD 88 ORTHO HEIGHT -    24.139 (meters)       79.20  (feet) ADJUSTED
 JV3821  ______________________________________________________________________
 JV3821  GEOID HEIGHT    -        -32.860 (meters)                     GEOID18
 JV3821  DYNAMIC HEIGHT  -         24.125 (meters)       79.15  (feet) COMP
 JV3821  MODELED GRAVITY -    980,080.0   (mgal)                       NAVD 88
 JV3821
 JV3821  VERT ORDER      -  FIRST     CLASS II
 JV3821
 JV3821.The horizontal coordinates were scaled from a map and have
 JV3821.an estimated accuracy of +/- 6 seconds.
 JV3821
 JV3821.The orthometric height was determined by differential leveling and
 JV3821.adjusted by the NATIONAL GEODETIC SURVEY
 JV3821.in June 1991.
 JV3821
 JV3821.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3821.GEOID18 height accuracy estimate available here.
 JV3821
 JV3821.Click photographs - Photos may exist for this station.
 JV3821
 JV3821.The dynamic height is computed by dividing the NAVD 88
 JV3821.geopotential number by the normal gravity value computed on the
 JV3821.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3821.degrees latitude (g = 980.6199 gals.).
 JV3821
 JV3821.The modeled gravity was interpolated from observed gravity values.
 JV3821
 JV3821;                    North         East    Units  Estimated Accuracy
 JV3821;SPC MD       -   155,620.      431,320.      MT  (+/- 180 meters Scaled)
 JV3821
 JV3821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ582256(NAD 83)
 JV3821
 JV3821                          SUPERSEDED SURVEY CONTROL
 JV3821
 JV3821  NGVD 29 (11/26/84)   24.376  (m)           79.97   (f) ADJUSTED    1 2
 JV3821
 JV3821.Superseded values are not recommended for survey control.
 JV3821
 JV3821.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3821.See file dsdata.pdf to determine how the superseded data were derived.
 JV3821
 JV3821_MARKER: DV = VERTICAL CONTROL DISK
 JV3821_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV3821+WITH SETTING: INTO GROUND
 JV3821_STAMPING: E 137 1975
 JV3821_MARK LOGO: NGS
 JV3821_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3821+STABILITY: SURFACE MOTION
 JV3821_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3821+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2005
 JV3821
 JV3821  HISTORY     - Date     Condition        Report By
 JV3821  HISTORY     - 1975     MONUMENTED       NGS
 JV3821  HISTORY     - 20020218 GOOD             USPSQD
 JV3821  HISTORY     - 20051215 GOOD             USPSQD
 JV3821
 JV3821                          STATION DESCRIPTION
 JV3821
 JV3821'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 JV3821'2.35 MI SOUTH FROM BENFIELD.
 JV3821'2.35 MILES SOUTH ALONG STATE HIGHWAY 3 FROM THE ANNE ARUNDEL POLICE
 JV3821'AND FIRE DEPARTMENT HEADQUARTERS. 85 FEET SOUTHEAST OF THE CENTERLINE
 JV3821'OF THE NORTHBOUND LANE OF STATE HIGHWAY 3. 30 FEET NORTHWEST OF THE
 JV3821'CENTERLINE OF A SIDEROAD. 53 FEET SOUTHEAST OF A METAL GUARDRAIL. 9.3
 JV3821'FEET NORTHWEST OF A METAL GUARDRAIL. 57 FEET NORTHWEST OF POWER POLE
 JV3821'NO 488995. 11.6 FEET NORTHEAST OF POWER POLE NO 488996. 27 FEET
 JV3821'SOUTHEAST OF A LARGE CONCRETE DRAINAGE GUTTER. 7 FEET NORTHWEST OF A
 JV3821'LARGE DRAINAGE GUTTER.
 JV3821
 JV3821                          STATION RECOVERY (2002)
 JV3821
 JV3821'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV3821'RECOVERED IN GOOD CONDITION.
 JV3821
 JV3821                          STATION RECOVERY (2005)
 JV3821
 JV3821'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV3821'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1183 ***********************************************************************
 JV1183  DESIGNATION -  E 14
 JV1183  PID         -  JV1183
 JV1183  STATE/COUNTY-  MD/BALTIMORE
 JV1183  COUNTRY     -  US
 JV1183  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1183
 JV1183                         *CURRENT SURVEY CONTROL
 JV1183  ______________________________________________________________________
 JV1183* NAD 83(1986) POSITION- 39 25 12.     (N) 076 38 05.     (W)   SCALED
 JV1183* NAVD 88 ORTHO HEIGHT -    92.463 (meters)      303.36  (feet) ADJUSTED
 JV1183  ______________________________________________________________________
 JV1183  GEOID HEIGHT    -        -32.480 (meters)                     GEOID18
 JV1183  DYNAMIC HEIGHT  -         92.414 (meters)      303.19  (feet) COMP
 JV1183  MODELED GRAVITY -    980,098.3   (mgal)                       NAVD 88
 JV1183
 JV1183  VERT ORDER      -  SECOND    CLASS 0
 JV1183
 JV1183.The horizontal coordinates were scaled from a map and have
 JV1183.an estimated accuracy of +/- 6 seconds.
 JV1183
 JV1183.The orthometric height was determined by differential leveling and
 JV1183.adjusted by the NATIONAL GEODETIC SURVEY
 JV1183.in June 1991.
 JV1183
 JV1183.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1183.GEOID18 height accuracy estimate available here.
 JV1183
 JV1183.Click photographs - Photos may exist for this station.
 JV1183
 JV1183.The dynamic height is computed by dividing the NAVD 88
 JV1183.geopotential number by the normal gravity value computed on the
 JV1183.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1183.degrees latitude (g = 980.6199 gals.).
 JV1183
 JV1183.The modeled gravity was interpolated from observed gravity values.
 JV1183
 JV1183;                    North         East    Units  Estimated Accuracy
 JV1183;SPC MD       -   194,700.      431,460.      MT  (+/- 180 meters Scaled)
 JV1183
 JV1183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ592646(NAD 83)
 JV1183
 JV1183                          SUPERSEDED SURVEY CONTROL
 JV1183
 JV1183  NGVD 29 (11/26/84)   92.684  (m)          304.08   (f) ADJUSTED    2 0
 JV1183
 JV1183.Superseded values are not recommended for survey control.
 JV1183
 JV1183.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1183.See file dsdata.pdf to determine how the superseded data were derived.
 JV1183
 JV1183_MARKER: DB = BENCH MARK DISK
 JV1183_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1183_SP_SET: BRIDGE
 JV1183_STAMPING: E 14 1935
 JV1183_MARK LOGO: CGS
 JV1183_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1183
 JV1183  HISTORY     - Date     Condition        Report By
 JV1183  HISTORY     - 1935     MONUMENTED       CGS
 JV1183  HISTORY     - 1959     GOOD             CGS
 JV1183  HISTORY     - 19950510 MARK NOT FOUND   USPSQD
 JV1183  HISTORY     - 19950721 MARK NOT FOUND   USPSQD
 JV1183
 JV1183                          STATION DESCRIPTION
 JV1183
 JV1183'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1183'0.4 MI S FROM LUTHERVILLE.
 JV1183'ABOUT 0.4 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV1183'STATION AT LUTHERVILLE, ON THE TOP OF THE SOUTHEAST END OF THE
 JV1183'SOUTHWEST STONE ABUTMENT OF A BRIDGE OVER A SMALL CREEK, 4.7 FEET
 JV1183'SOUTHEAST OF THE SOUTHEAST RAIL AND 1 FOOT BELOW THE LEVEL OF THE
 JV1183'TRACK.
 JV1183
 JV1183                          STATION RECOVERY (1959)
 JV1183
 JV1183'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV1183'RECOVERED IN GOOD CONDITION.
 JV1183
 JV1183                          STATION RECOVERY (1995)
 JV1183
 JV1183'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1183'MARK NOT FOUND.
 JV1183
 JV1183                          STATION RECOVERY (1995)
 JV1183
 JV1183'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1183'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1027 ***********************************************************************
 HU1027  DESIGNATION -  E 141
 HU1027  PID         -  HU1027
 HU1027  STATE/COUNTY-  MD/WORCESTER
 HU1027  COUNTRY     -  US
 HU1027  USGS QUAD   -  WHITTINGTON POINT (2016)
 HU1027
 HU1027                         *CURRENT SURVEY CONTROL
 HU1027  ______________________________________________________________________
 HU1027* NAD 83(2011) POSITION- 38 05 33.81361(N) 075 11 56.13162(W)   ADJUSTED
 HU1027* NAD 83(2011) ELLIP HT-   -34.469 (meters)        (06/05/19)   ADJUSTED
 HU1027* NAD 83(2011) EPOCH   -  2010.00
 HU1027* NAVD 88 ORTHO HEIGHT -     1.923 (meters)        6.31  (feet) ADJUSTED
 HU1027  ______________________________________________________________________
 HU1027  GEOID HEIGHT    -        -36.344 (meters)                     GEOID18
 HU1027  NAD 83(2011) X  -  1,283,976.593 (meters)                     COMP
 HU1027  NAD 83(2011) Y  - -4,859,287.349 (meters)                     COMP
 HU1027  NAD 83(2011) Z  -  3,913,528.047 (meters)                     COMP
 HU1027  LAPLACE CORR    -          0.72  (seconds)                    DEFLEC18
 HU1027  DYNAMIC HEIGHT  -          1.922 (meters)        6.31  (feet) COMP
 HU1027  MODELED GRAVITY -    979,981.5   (mgal)                       NAVD 88
 HU1027
 HU1027  VERT ORDER      -  SECOND    CLASS I
 HU1027
 HU1027  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1027  Standards:
 HU1027         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1027            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1027  -------------------------------------------------------------------
 HU1027  NETWORK    1.02   0.86           0.49   0.29   0.44     -0.00516961
 HU1027  -------------------------------------------------------------------
 HU1027  Click here for local accuracies and other accuracy information.
 HU1027
 HU1027.The horizontal coordinates were established by GPS observations
 HU1027.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 HU1027
 HU1027.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1027.been affixed to the stable North American tectonic plate. See 
 HU1027.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1027
 HU1027.The horizontal coordinates are valid at the epoch date displayed above
 HU1027.which is a decimal equivalence of Year/Month/Day.
 HU1027
 HU1027.The orthometric height was determined by differential leveling and
 HU1027.adjusted by the NATIONAL GEODETIC SURVEY
 HU1027.in June 1991.
 HU1027
 HU1027.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1027.GEOID18 height accuracy estimate available here.
 HU1027
 HU1027.Click photographs - Photos may exist for this station.
 HU1027
 HU1027.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1027
 HU1027.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1027
 HU1027.The ellipsoidal height was determined by GPS observations
 HU1027.and is referenced to NAD 83.
 HU1027
 HU1027.The dynamic height is computed by dividing the NAVD 88
 HU1027.geopotential number by the normal gravity value computed on the
 HU1027.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1027.degrees latitude (g = 980.6199 gals.).
 HU1027
 HU1027.The modeled gravity was interpolated from observed gravity values.
 HU1027
 HU1027. The following values were computed from the NAD 83(2011) position.
 HU1027
 HU1027;                    North         East     Units Scale Factor Converg.
 HU1027;SPC MD       -    48,853.516   557,989.883   MT  1.00004252   +1 07 49.5
 HU1027;SPC MD       -   160,280.24  1,830,671.81   sFT  1.00004252   +1 07 49.5
 HU1027;UTM  18      - 4,216,121.925   482,556.883   MT  0.99960375   -0 07 21.8
 HU1027
 HU1027!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1027!SPC MD       -   1.00000541  x   1.00004252  =   1.00004793
 HU1027!UTM  18      -   1.00000541  x   0.99960375  =   0.99960916
 HU1027
 HU1027_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8255616121(NAD 83)
 HU1027
 HU1027                          SUPERSEDED SURVEY CONTROL
 HU1027
 HU1027  NGVD 29 (11/26/84)    2.165  (m)            7.10   (f) ADJUSTED    2 1
 HU1027
 HU1027.Superseded values are not recommended for survey control.
 HU1027
 HU1027.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1027.See file dsdata.pdf to determine how the superseded data were derived.
 HU1027
 HU1027_MARKER: DV = VERTICAL CONTROL DISK
 HU1027_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1027+WITH SETTING: INTO GROUND
 HU1027_STAMPING: E 141 1977
 HU1027_MARK LOGO: NGS
 HU1027_PROJECTION: PROJECTING 10 CENTIMETERS
 HU1027_MAGNETIC: I = MARKER IS A STEEL ROD
 HU1027_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1027+STABILITY: SURFACE MOTION
 HU1027_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1027+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 HU1027
 HU1027  HISTORY     - Date     Condition        Report By
 HU1027  HISTORY     - 1977     MONUMENTED       NGS
 HU1027  HISTORY     - 1989     GOOD             USPSQD
 HU1027  HISTORY     - 20130305 GOOD             ARCSHE
 HU1027  HISTORY     - 20150316 GOOD             NGS
 HU1027
 HU1027                          STATION DESCRIPTION
 HU1027
 HU1027'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1027'IN ASSATEAGUE ISLAND.
 HU1027'4.8 MILES NORTHEAST ALONG THE SERVICE ROAD FROM THE STATE LINE ON
 HU1027'ASSATEAGUE ISLAND, AT A POINT WHERE THE ROAD FORKS, 62 FEET SOUTH
 HU1027'EAST OF THE CENTERLINE OF THE SOUTHEAST ROAD, 34 FEET EAST OF POWER
 HU1027'LINE POLE 349.
 HU1027
 HU1027                          STATION RECOVERY (1989)
 HU1027
 HU1027'RECOVERY NOTE BY US POWER SQUADRON 1989 (FFS)
 HU1027'RECOVERED IN GOOD CONDITION.
 HU1027
 HU1027                          STATION RECOVERY (2013)
 HU1027
 HU1027'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU1027'THE MARK IS LOCATED ABOUT 11.8 MI (19.0 KM) EAST-NORTHEAST OF
 HU1027'STOCKTON, 10.8 MI (17.4 KM) EAST OF GIRDLETREE AND 8.3 MI (13.4 KM)
 HU1027'EAST OF BOXIRON ON ASSATEAGUE ISLAND.  OWNERSHIP--U.S. GOVERNMENT.
 HU1027'
 HU1027'TO REACH FROM THE SOUTHEAST END OF THE VERRAZANO BRIDGE OVER
 HU1027'SINEPUXENT BAY, GO SOUTHEAST ON MD 611 FOR 0.62 MI (1.0 KM) TO A SIDE
 HU1027'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ON STEPHEN DECATUR
 HU1027'MEMORIAL ROAD FOR 2.27 MI (3.7 KM) TO A PARK RANGER BOOTH.  CONTINUE
 HU1027'SOUTHWEST ON STEPHEN DECATUR MEMORIAL ROAD FOR 1.22 MI (2.0 KM) TO A
 HU1027'TRAFFIC CIRCLE.  TAKE THE SECOND EXIT AND CONTINUE SOUTHWEST ON
 HU1027'BAYBERRY DRIVE FOR 0.19 MI (0.3 KM) TO THE END OF THE PAVEMENT.
 HU1027'ACTIVATE FOUR WHEEL DRIVE AND CONTINUE SOUTHWEST ON A SAND ROAD AND
 HU1027'ALONG THE BEACH FOR 7.05 MI (11.3 KM) AND PARK VEHICLE.  WALK
 HU1027'NORTHWEST FOR 675 FT (205.7 M) TO THE MARK.
 HU1027'
 HU1027'IT IS 2.0 FT (0.6 M) EAST OF A FIBERGLASS WITNESS POST.
 HU1027
 HU1027                          STATION RECOVERY (2015)
 HU1027
 HU1027'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2015 (NTW)
 HU1027'THE STATION IS LOCATED AT KM 27.3 IN THE OSV ZONE. FROM BAYBERRY
 HU1027'DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE
 HU1027'REQUIRED). DRIVE SOUTH ON THE BEACH 11.3 KM (7 MI), PARK VEHICLE, AND
 HU1027'WALK NORTHWEST FOR 205.7 M (673.8 FT). THE STATION IS 11 M (36 FT)
 HU1027'EAST OF THE CENTER-LINE OF AN OLD ROADBED, 50 CM (19.7 IN) EAST OF AN
 HU1027'ORANGE CARSONITE WITNESS POST, AND PROJECTS 9 CM (3.5 IN) FROM THE
 HU1027'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3872 ***********************************************************************
 JV3872  DESIGNATION -  E 143
 JV3872  PID         -  JV3872
 JV3872  STATE/COUNTY-  MD/FREDERICK
 JV3872  COUNTRY     -  US
 JV3872  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3872
 JV3872                         *CURRENT SURVEY CONTROL
 JV3872  ______________________________________________________________________
 JV3872* NAD 83(1986) POSITION- 39 17 44.     (N) 077 32 22.     (W)   SCALED
 JV3872* NAVD 88 ORTHO HEIGHT -   178.397 (meters)      585.29  (feet) ADJUSTED
 JV3872  ______________________________________________________________________
 JV3872  GEOID HEIGHT    -        -32.755 (meters)                     GEOID18
 JV3872  DYNAMIC HEIGHT  -        178.300 (meters)      584.97  (feet) COMP
 JV3872  MODELED GRAVITY -    980,083.3   (mgal)                       NAVD 88
 JV3872
 JV3872  VERT ORDER      -  FIRST     CLASS II
 JV3872
 JV3872.The horizontal coordinates were scaled from a map and have
 JV3872.an estimated accuracy of +/- 6 seconds.
 JV3872
 JV3872.The orthometric height was determined by differential leveling and
 JV3872.adjusted by the NATIONAL GEODETIC SURVEY
 JV3872.in June 1991.
 JV3872
 JV3872.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3872.GEOID18 height accuracy estimate available here.
 JV3872
 JV3872.Click photographs - Photos may exist for this station.
 JV3872
 JV3872.The dynamic height is computed by dividing the NAVD 88
 JV3872.geopotential number by the normal gravity value computed on the
 JV3872.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3872.degrees latitude (g = 980.6199 gals.).
 JV3872
 JV3872.The modeled gravity was interpolated from observed gravity values.
 JV3872
 JV3872;                    North         East    Units  Estimated Accuracy
 JV3872;SPC MD       -   180,960.      353,470.      MT  (+/- 180 meters Scaled)
 JV3872
 JV3872_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ810526(NAD 83)
 JV3872
 JV3872                          SUPERSEDED SURVEY CONTROL
 JV3872
 JV3872.No superseded survey control is available for this station.
 JV3872
 JV3872_MARKER: DV = VERTICAL CONTROL DISK
 JV3872_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3872_STAMPING: E 143 1979
 JV3872_MARK LOGO: NGS
 JV3872_PROJECTION: FLUSH
 JV3872_MAGNETIC: I = MARKER IS A STEEL ROD
 JV3872_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3872_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3872+SATELLITE: SATELLITE OBSERVATIONS - June 11, 2005
 JV3872_ROD/PIPE-DEPTH: 4.57 meters
 JV3872
 JV3872  HISTORY     - Date     Condition        Report By
 JV3872  HISTORY     - 1979     MONUMENTED       NGS
 JV3872  HISTORY     - 19950323 GOOD             NGS
 JV3872  HISTORY     - 20050611 GOOD             GEOCAC
 JV3872
 JV3872                          STATION DESCRIPTION
 JV3872
 JV3872'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3872'1.85 MI NORTH FROM POINT OF ROCKS.
 JV3872'1.0 MILE NORTHEAST ALONG STATE ROUTE 15 FROM THE JUNCTION OF STATE
 JV3872'ROUTE 464 IN POINT OF ROCKS, THENCE 0.85 MILE NORTHWEST ALONG STATE
 JV3872'ROUTE 464 TO  THE MARK ON THE LEFT, SET ON A SMALL HILL AT THE
 JV3872'SOUTHEAST SIDE OF A GRAVEL DRIVEWAY LEADING SOUTHWEST, 38 FEET
 JV3872'SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 26 FEET SOUTHEAST OF THE
 JV3872'CENTERLINE OF THE DRIVEWAY, 15.5 FEET SOUTHEAST OF POWER POLE 165.
 JV3872'THE MARK IS 1 FT  E FROM A WITNESS POST.
 JV3872'THE MARK IS 8 FT ABOVE HIGHWAY.
 JV3872
 JV3872                          STATION RECOVERY (1995)
 JV3872
 JV3872'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (GAS)
 JV3872'1.6 KM (1.00 MI) NORTHERLY ALONG U.S.  HIGHWAY 15 FROM THE JUNCTION OF
 JV3872'STATE HIGHWAY 28 IN POINT OF ROCKS, THENCE 1.2 KM (0.75 MI)
 JV3872'NORTHWESTERLY ALONG STATE HIGHWAY 464, 11.8 M (38.7 FT) WEST OF THE
 JV3872'HIGHWAY CENTERLINE, 7.9 M (25.9 FT) SOUTH OF THE CENTER OF A DRIVEWAY,
 JV3872'4.7 M (15.4 FT) SOUTH OF UTILITY POLE NUMBER 165, 2.0 M (6.6 FT) ABOVE
 JV3872'THE LEVEL OF THE HIGHWAY, AND 0.5 M (1.6 FT) NORTH OF A WITNESS POST.
 JV3872'NOTE--THE DISK IS ENCASED IN A 4-INCH PVC PIPE WITH A SCREW CAP AND IS
 JV3872'RECESSED 0.1 M (0.3 FT) BELOW THE GROUND SURFACE.
 JV3872
 JV3872                          STATION RECOVERY (2005)
 JV3872
 JV3872'RECOVERY NOTE BY GEOCACHING 2005 (LWB)
 JV3872'FOUND.  SIGN AT DRIVEWAY READS CATOCTIN KEY SCOTTO 38.79.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3938 ***********************************************************************
 JV3938  DESIGNATION -  E 146
 JV3938  PID         -  JV3938
 JV3938  STATE/COUNTY-  MD/WASHINGTON
 JV3938  COUNTRY     -  US
 JV3938  USGS QUAD   -  HARPERS FERRY (2016)
 JV3938
 JV3938                         *CURRENT SURVEY CONTROL
 JV3938  ______________________________________________________________________
 JV3938* NAD 83(1986) POSITION- 39 22 23.3    (N) 077 40 06.0    (W)   HD_HELD2
 JV3938* NAVD 88 ORTHO HEIGHT -   165.217 (meters)      542.05  (feet) ADJUSTED
 JV3938  ______________________________________________________________________
 JV3938  GEOID HEIGHT    -        -33.327 (meters)                     GEOID18
 JV3938  DYNAMIC HEIGHT  -        165.122 (meters)      541.74  (feet) COMP
 JV3938  MODELED GRAVITY -    980,045.0   (mgal)                       NAVD 88
 JV3938  OBS GRAVITY     -    980,047.9   (mgal)                       GRAV_OBS
 JV3938
 JV3938  VERT ORDER      -  FIRST     CLASS II
 JV3938
 JV3938.The horizontal coordinates were established by autonomous hand held GPS
 JV3938.observations and have an estimated accuracy of +/- 10 meters.
 JV3938
 JV3938.The orthometric height was determined by differential leveling and
 JV3938.adjusted by the NATIONAL GEODETIC SURVEY
 JV3938.in June 1991.
 JV3938
 JV3938.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3938.GEOID18 height accuracy estimate available here.
 JV3938
 JV3938.Click photographs - Photos may exist for this station.
 JV3938
 JV3938.The dynamic height is computed by dividing the NAVD 88
 JV3938.geopotential number by the normal gravity value computed on the
 JV3938.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3938.degrees latitude (g = 980.6199 gals.).
 JV3938
 JV3938.The modeled gravity was interpolated from observed gravity values.
 JV3938
 JV3938.The observed gravity was obtained from relative gravimeter ties
 JV3938.to the IGSN71 gravity network.
 JV3938
 JV3938;                    North         East    Units  Estimated Accuracy
 JV3938;SPC MD       -   189,641.      342,411.      MT  (+/- 10 meters HH2 GPS)
 JV3938
 JV3938_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7014661582(NAD 83)
 JV3938
 JV3938                          SUPERSEDED SURVEY CONTROL
 JV3938
 JV3938.No superseded survey control is available for this station.
 JV3938
 JV3938_MARKER: DV = VERTICAL CONTROL DISK
 JV3938_SETTING: 66 = SET IN ROCK OUTCROP
 JV3938_STAMPING: E 146 1979
 JV3938_MARK LOGO: NGS
 JV3938_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3938+STABILITY: POSITION/ELEVATION WELL
 JV3938_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3938+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2020
 JV3938
 JV3938  HISTORY     - Date     Condition        Report By
 JV3938  HISTORY     - 1979     MONUMENTED       NGS
 JV3938  HISTORY     - 20100726 GOOD             INDIV
 JV3938  HISTORY     - 20101128 GOOD             GEOCAC
 JV3938  HISTORY     - 20200516 GOOD             NGS
 JV3938
 JV3938                          STATION DESCRIPTION
 JV3938
 JV3938'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3938'3.05 MI NORTH FROM WEVERTON.
 JV3938'3.05 MILES NORTHEAST ALONG STATE ROUTE 67 FROM  THE NORTH END OF THE
 JV3938'ROUTE 67 OVERPASS BRIDGE OVER U.S. HIGHWAY 340 TO THE MARK ON THE
 JV3938'RIGHT, SET IN TOP OF A SMALL ROCK CUT, 7 FEET ABOVE THE HIGHWAY, 45
 JV3938'FEET EAST OF THE CENTER LINE OF ROUTE 67, 0.4 MILE NORTHEAST OF THE
 JV3938'JUNCTION OF YARROWSBURG ROAD.
 JV3938'THE MARK IS 1 FT  W FROM A WITNESS POST.
 JV3938'THE MARK IS 7 FT ABOVE HIGHWAY.
 JV3938
 JV3938                          STATION RECOVERY (2010)
 JV3938
 JV3938'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2010 (GEC)
 JV3938'RECOVERED AS DESCRIBED. WITNESS POST IS VISIBLE FROM RT67 AND IS 100'
 JV3938'+/- NORTH OF CL OF ENTRANCE TO YARROWSBURG MENONITE CHURCH
 JV3938
 JV3938                          STATION RECOVERY (2010)
 JV3938
 JV3938'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV3938'RECOVERED IN GOOD CONDITION.
 JV3938
 JV3938                          STATION RECOVERY (2020)
 JV3938
 JV3938'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (JH)
 JV3938'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3845 ***********************************************************************
 JV3845  DESIGNATION -  E 147
 JV3845  PID         -  JV3845
 JV3845  STATE/COUNTY-  MD/MONTGOMERY
 JV3845  COUNTRY     -  US
 JV3845  USGS QUAD   -  KENSINGTON (2016)
 JV3845
 JV3845                         *CURRENT SURVEY CONTROL
 JV3845  ______________________________________________________________________
 JV3845* NAD 83(1986) POSITION- 39 02 33.     (N) 077 06 40.     (W)   SCALED
 JV3845* NAVD 88 ORTHO HEIGHT -   114.465 (meters)      375.54  (feet) ADJUSTED
 JV3845  ______________________________________________________________________
 JV3845  GEOID HEIGHT    -        -31.801 (meters)                     GEOID18
 JV3845  DYNAMIC HEIGHT  -        114.404 (meters)      375.34  (feet) COMP
 JV3845  MODELED GRAVITY -    980,095.7   (mgal)                       NAVD 88
 JV3845
 JV3845  VERT ORDER      -  FIRST     CLASS II
 JV3845
 JV3845.The horizontal coordinates were scaled from a map and have
 JV3845.an estimated accuracy of +/- 6 seconds.
 JV3845
 JV3845.The orthometric height was determined by differential leveling and
 JV3845.adjusted by the NATIONAL GEODETIC SURVEY
 JV3845.in June 1991.
 JV3845
 JV3845.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3845.GEOID18 height accuracy estimate available here.
 JV3845
 JV3845.Click photographs - Photos may exist for this station.
 JV3845
 JV3845.The dynamic height is computed by dividing the NAVD 88
 JV3845.geopotential number by the normal gravity value computed on the
 JV3845.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3845.degrees latitude (g = 980.6199 gals.).
 JV3845
 JV3845.The modeled gravity was interpolated from observed gravity values.
 JV3845
 JV3845;                    North         East    Units  Estimated Accuracy
 JV3845;SPC MD       -   152,730.      390,380.      MT  (+/- 180 meters Scaled)
 JV3845
 JV3845_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ172236(NAD 83)
 JV3845
 JV3845                          SUPERSEDED SURVEY CONTROL
 JV3845
 JV3845.No superseded survey control is available for this station.
 JV3845
 JV3845_MARKER: DV = VERTICAL CONTROL DISK
 JV3845_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3845_STAMPING: E 147 1979
 JV3845_MARK LOGO: NGS
 JV3845_PROJECTION: RECESSED 10 CENTIMETERS
 JV3845_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3845_ROD/PIPE-DEPTH: 4.6 meters
 JV3845
 JV3845  HISTORY     - Date     Condition        Report By
 JV3845  HISTORY     - 1979     MONUMENTED       NGS
 JV3845
 JV3845                          STATION DESCRIPTION
 JV3845
 JV3845'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3845'IN ROCKVILLE.
 JV3845'IN ROCKVILLE, 0.75 MILE SOUTHEAST ALONG STATE ROUTE 355, ROCKVILLE
 JV3845'PIKE FROM THE JUNCTION OF MONTROSE ROAD, 0.1 MILE NORTHWEST OF
 JV3845'JUNCTION OF SECURITY LANE, SET AT THE NORTHWEST ENTRANCE TO COLONIAL
 JV3845'MANOR MOTEL AND FRIENDSHIP SAVINGS AND LOAN, ON THE SOUTH SIDE OF A
 JV3845'TELEPHONE POLE AND POWER POLE WHICH ARE STANDING SIDE BY SIDE, 75.5
 JV3845'FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A SAVING AND LOAN BUILDING,
 JV3845'17.4 FEET WEST OF THE WEST CURB OF ROUTE 355, 4.5 FEET SOUTH OF
 JV3845'POWER POLE 7684440-3553 WITH A GUY WIRE, 6.8 FEET NORTH OF THE BASE
 JV3845'OF THE GUY WIRE, AND 2.8 FEET SOUTH OF TELEPHONE POLE M1712.
 JV3845'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0669 ***********************************************************************
 JW0669  DESIGNATION -  E 15
 JW0669  PID         -  JW0669
 JW0669  STATE/COUNTY-  MD/GARRETT
 JW0669  COUNTRY     -  US
 JW0669  USGS QUAD   -  OAKLAND (2016)
 JW0669
 JW0669                         *CURRENT SURVEY CONTROL
 JW0669  ______________________________________________________________________
 JW0669* NAD 83(1986) POSITION- 39 23 33.     (N) 079 22 54.     (W)   SCALED
 JW0669* NAVD 88 ORTHO HEIGHT -   731.003 (meters)     2398.30  (feet) POSTED
 JW0669  ______________________________________________________________________
 JW0669  GEOID HEIGHT    -        -31.143 (meters)                     GEOID18
 JW0669  DYNAMIC HEIGHT  -        730.50  (meters)     2396.6   (feet) COMP
 JW0669  MODELED GRAVITY -    979,918.7   (mgal)                       NAVD 88
 JW0669
 JW0669  VERT ORDER      -  * POSTED, SEE BELOW
 JW0669
 JW0669.The horizontal coordinates were scaled from a map and have
 JW0669.an estimated accuracy of +/- 6 seconds.
 JW0669
 JW0669.The orthometric height was determined by differential leveling
 JW0669.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JW0669
 JW0669.* This is a POSTED BENCH MARK height.
 JW0669
 JW0669.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0669.GEOID18 height accuracy estimate available here.
 JW0669
 JW0669.Click photographs - Photos may exist for this station.
 JW0669
 JW0669.The dynamic height is computed by dividing the NAVD 88
 JW0669.geopotential number by the normal gravity value computed on the
 JW0669.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0669.degrees latitude (g = 980.6199 gals.).
 JW0669
 JW0669.The modeled gravity was interpolated from observed gravity values.
 JW0669
 JW0669;                    North         East    Units  Estimated Accuracy
 JW0669;SPC MD       -   194,260.      194,860.      MT  (+/- 180 meters Scaled)
 JW0669
 JW0669_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD393615(NAD 83)
 JW0669
 JW0669                          SUPERSEDED SURVEY CONTROL
 JW0669
 JW0669  NGVD 29 (??/??/92)  731.136  (m)         2398.74   (f) ADJ UNCH    1 2
 JW0669
 JW0669.Superseded values are not recommended for survey control.
 JW0669
 JW0669.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0669.See file dsdata.pdf to determine how the superseded data were derived.
 JW0669
 JW0669_MARKER: DB = BENCH MARK DISK
 JW0669_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0669_STAMPING: E 15 1935
 JW0669_MARK LOGO: CGS
 JW0669_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0669+STABILITY: SURFACE MOTION
 JW0669
 JW0669  HISTORY     - Date     Condition        Report By
 JW0669  HISTORY     - 1935     MONUMENTED       CGS
 JW0669  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0669
 JW0669                          STATION DESCRIPTION
 JW0669
 JW0669'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0669'2 MI E FROM OAKLAND.
 JW0669'ABOUT 2.0 MILES EAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JW0669'THE CROSSING OF SECOND STREET AT OAKLAND, GARRETT COUNTY, ABOUT
 JW0669'0.4 MILE WEST OF THE STATION AT MOUNTAIN LAKE PARK, 48 FEET WEST
 JW0669'OF THE CENTER OF AN ABANDONED NORTH-AND-SOUTH ROAD CROSSING, 42
 JW0669'FEET NORTH OF THE CENTER LINE OF THE NORTH MAIN TRACK, AND 5 FEET
 JW0669'NORTHEAST OF A POLE.  A STANDARD DISK, STAMPED E 15 1935 AND SET
 JW0669'IN THE TOP OF A CONCRETE POST.
 JW0669
 JW0669                          STATION RECOVERY (1983)
 JW0669
 JW0669'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0669'NOT RECOVERED, THE ROAD CROSSING NO LONGER EXISTS, NO SIGNS OF THE
 JW0669'MARK COULD BE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2780 ***********************************************************************
 JV2780  DESIGNATION -  E 16 RESET
 JV2780  PID         -  JV2780
 JV2780  STATE/COUNTY-  MD/MONTGOMERY
 JV2780  COUNTRY     -  US
 JV2780  USGS QUAD   -  KENSINGTON (2016)
 JV2780
 JV2780                         *CURRENT SURVEY CONTROL
 JV2780  ______________________________________________________________________
 JV2780* NAD 83(1986) POSITION- 39 01 36.55   (N) 077 02 48.36   (W)   HD_HELD1
 JV2780* NAVD 88 ORTHO HEIGHT -   101.49  (meters)      333.0   (feet) RESET
 JV2780  ______________________________________________________________________
 JV2780  GEOID HEIGHT    -        -31.919 (meters)                     GEOID18
 JV2780  VERT ORDER      -  THIRD
 JV2780
 JV2780.The horizontal coordinates were determined by differentially corrected
 JV2780.hand held GPS observations or other comparable positioning techniques
 JV2780.and have an estimated accuracy of +/- 3 meters.
 JV2780
 JV2780.The orthometric height was computed from unverified reset data.
 JV2780
 JV2780.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2780.GEOID18 height accuracy estimate available here.
 JV2780
 JV2780.Click photographs - Photos may exist for this station.
 JV2780
 JV2780;                    North         East    Units  Estimated Accuracy
 JV2780;SPC MD       -   150,984.5     395,950.5     MT  (+/- 3 meters HH1 GPS) 
 JV2780
 JV2780_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2282521745(NAD 83)
 JV2780
 JV2780                          SUPERSEDED SURVEY CONTROL
 JV2780
 JV2780  NGVD 29 (??/??/??)  101.72   (m)          333.7    (f) RESET       3  
 JV2780
 JV2780.Superseded values are not recommended for survey control.
 JV2780
 JV2780.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2780.See file dsdata.pdf to determine how the superseded data were derived.
 JV2780
 JV2780_MARKER: DB = BENCH MARK DISK
 JV2780_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV2780_SP_SET: CULVERT
 JV2780_STAMPING: E 16 RESET 1962
 JV2780_MARK LOGO: CGS
 JV2780_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2780
 JV2780  HISTORY     - Date     Condition        Report By
 JV2780  HISTORY     - 1962     MONUMENTED       CGS
 JV2780  HISTORY     - 1987     GOOD             USPSQD
 JV2780
 JV2780                          STATION DESCRIPTION
 JV2780
 JV2780'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 JV2780'1.1 MILE SOUTH FROM WHEATON.
 JV2780'ABOUT 1.1 MILES SOUTH ALONG GEORGIA AVE. (STATE HIGHWAY 97)
 JV2780'FROM THE INTERSECTION OF STATE HIGHWAY 193 AT WHEATON, JUST NORTH
 JV2780'OF EVANS PARKWAY, SET IN THE TOP OF THE NORTHWEST CORNER OF A CON-
 JV2780'CRETE CULVERT, 1/2 FOOT SOUTH OF THE NORTH EDGE OF THE CULVERT, 1
 JV2780'FOOT EAST OF THE WEST EDGE OF THE CULVERT, 6 INCHES EAST OF AN
 JV2780'IRON RAILING.
 JV2780
 JV2780                          STATION RECOVERY (1987)
 JV2780
 JV2780'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2780'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1142 ***********************************************************************
 JW1142  DESIGNATION -  E 167
 JW1142  PID         -  JW1142
 JW1142  STATE/COUNTY-  MD/GARRETT
 JW1142  COUNTRY     -  US
 JW1142  USGS QUAD   -  OAKLAND (2016)
 JW1142
 JW1142                         *CURRENT SURVEY CONTROL
 JW1142  ______________________________________________________________________
 JW1142* NAD 83(1995) POSITION- 39 23 45.59399(N) 079 22 33.41303(W)   ADJUSTED
 JW1142* NAD 83(1995) ELLIP HT-   700.013 (meters)        (04/01/98)   ADJUSTED
 JW1142* NAVD 88 ORTHO HEIGHT -   731.115 (meters)     2398.67  (feet) ADJUSTED
 JW1142  ______________________________________________________________________
 JW1142  GEOID HEIGHT    -        -31.150 (meters)                     GEOID18
 JW1142  NAD 83(1995) X  -    910,035.856 (meters)                     COMP
 JW1142  NAD 83(1995) Y  - -4,851,469.221 (meters)                     COMP
 JW1142  NAD 83(1995) Z  -  4,026,831.434 (meters)                     COMP
 JW1142  LAPLACE CORR    -         -1.14  (seconds)                    DEFLEC18
 JW1142  DYNAMIC HEIGHT  -        730.616 (meters)     2397.03  (feet) COMP
 JW1142  MODELED GRAVITY -    979,919.9   (mgal)                       NAVD 88
 JW1142
 JW1142  HORZ ORDER      -  THIRD
 JW1142  VERT ORDER      -  FIRST     CLASS II
 JW1142  ELLP ORDER      -  FOURTH    CLASS I
 JW1142
 JW1142.The horizontal coordinates were established by GPS observations
 JW1142.and adjusted by the National Geodetic Survey in April 1998.
 JW1142
 JW1142.The orthometric height was determined by differential leveling and
 JW1142.adjusted by the NATIONAL GEODETIC SURVEY
 JW1142.in June 1991.
 JW1142
 JW1142.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1142.GEOID18 height accuracy estimate available here.
 JW1142
 JW1142.Click photographs - Photos may exist for this station.
 JW1142
 JW1142.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1142
 JW1142.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1142
 JW1142.The ellipsoidal height was determined by GPS observations
 JW1142.and is referenced to NAD 83.
 JW1142
 JW1142.The dynamic height is computed by dividing the NAVD 88
 JW1142.geopotential number by the normal gravity value computed on the
 JW1142.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1142.degrees latitude (g = 980.6199 gals.).
 JW1142
 JW1142.The modeled gravity was interpolated from observed gravity values.
 JW1142
 JW1142. The following values were computed from the NAD 83(1995) position.
 JW1142
 JW1142;                    North         East     Units Scale Factor Converg.
 JW1142;SPC MD       -   194,631.475   195,357.300   MT  0.99999100   -1 29 28.4
 JW1142;SPC MD       -   638,553.43    640,934.74   sFT  0.99999100   -1 29 28.4
 JW1142;UTM  17      - 4,361,980.537   639,845.937   MT  0.99984079   +1 01 51.3
 JW1142
 JW1142!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1142!SPC MD       -   0.99989019  x   0.99999100  =   0.99988119
 JW1142!UTM  17      -   0.99989019  x   0.99984079  =   0.99973100
 JW1142
 JW1142_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3984561980(NAD 83)
 JW1142
 JW1142                          SUPERSEDED SURVEY CONTROL
 JW1142
 JW1142  NAD 83(1991)-  39 23 45.59923(N)    079 22 33.42663(W) AD(       ) 3
 JW1142  ELLIP H (01/27/92)  699.993  (m)                       GP(       ) 4 1
 JW1142  NAD 83(1986)-  39 23 45.59824(N)    079 22 33.42521(W) AD(       ) 3
 JW1142  NAD 27      -  39 23 45.26108(N)    079 22 34.26679(W) AD(       ) 3
 JW1142  NGVD 29             731.23   (m)         2399.0    (f) LEVELING    3  
 JW1142
 JW1142.Superseded values are not recommended for survey control.
 JW1142
 JW1142.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1142.See file dsdata.pdf to determine how the superseded data were derived.
 JW1142
 JW1142_MARKER: DV = VERTICAL CONTROL DISK
 JW1142_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW1142_SP_SET: BRIDGE ABUTMENT
 JW1142_STAMPING: E 167 1983
 JW1142_MARK LOGO: NGS
 JW1142_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1142_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1142_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW1142+SATELLITE: SATELLITE OBSERVATIONS - July 17, 2001
 JW1142
 JW1142  HISTORY     - Date     Condition        Report By
 JW1142  HISTORY     - 1983     MONUMENTED       NGS
 JW1142  HISTORY     - 1987     GOOD             NGS
 JW1142  HISTORY     - 20010717 GOOD             MDSHA
 JW1142
 JW1142                          STATION DESCRIPTION
 JW1142
 JW1142'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1142'2.2 KM (1.4 MI) EAST FROM OAKLAND.
 JW1142'2.2 KM (1.4 MI) EAST ALONG STATE HIGHWAY 135 FROM THE JUNCTION OF
 JW1142'U.S. HIGHWAY 219 IN OAKLAND TO THE MARK ON THE LEFT, IN TOP OF THE
 JW1142'NORTH END OF THE WEST ABUTMENT OF THE HIGHWAY BRIDGE OVER A CREEK,
 JW1142'5.63 METERS (18.5 FT) NORTH OF THE CENTERLINE OF THE HIGHWAY,
 JW1142'3.04 METERS (10.0 FT) EAST OF THE EAST END OF A METAL GUARDRAIL.
 JW1142'THE MARK IS 3.04 METERS  E FROM A WITNESS POST.
 JW1142'THE MARK IS 1.21 M BELOW HIGHWAY.
 JW1142
 JW1142                          STATION RECOVERY (1987)
 JW1142
 JW1142'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (AJL)
 JW1142'THE STATION IS LOCATED ABOUT 2.2 KM (1.4 MI)
 JW1142'EAST OF OAKLAND, IN THE TOP OF THE NORTHWEST CONCRETE ABUTMENT FOR
 JW1142'A SMALL HIGHWAY BRIDGE OVER A CREEK.
 JW1142'OWNERSHIP--MARYLAND DEPARTMENT OF TRANSPORTATION HIGHWAY
 JW1142'RIGHT-OF-WAY.
 JW1142'
 JW1142'TO REACH THE STATION FROM THE JUNCTION OF US HIGHWAY 219 AND STATE
 JW1142'HIGHWAY 135 IN OAKLAND, GO EAST FOR 2.2 KM (1.4 MI) ON HIGHWAY 135
 JW1142'TO THE SMALL HIGHWAY BRIDGE AND THE STATION ON THE LEFT.
 JW1142'
 JW1142'THE STATION IS A STANDARD NGS DISK
 JW1142'STAMPED---E 167 1983---,
 JW1142'SET INTO A DRILL HOLE IN THE TOP OF THE NORTH END OF THE WEST
 JW1142'CONCRETE ABUTMENT OF THE HIGHWAY BRIDGE OVER A CREEK.  LOCATED
 JW1142'5.6 METERS (18.5 FT) NORTH FROM THE CENTER OF THE HIGHWAY,
 JW1142'3.0 METERS (10.0 FT) EAST FROM THE EAST END OF A METAL GUARDRAIL,
 JW1142'3.0 METERS (10.0 FT) EAST FROM A FIBERGLASS WITNESS POST, AND 1.2
 JW1142'METERS BELOW THE HIGHWAY.
 JW1142'
 JW1142'DESCRIBED BY C. L. SMITH, TYPED BY C. L. SMITH.
 JW1142
 JW1142                          STATION RECOVERY (2001)
 JW1142
 JW1142'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JW1142'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1167 ***********************************************************************
 JW1167  DESIGNATION -  E 168
 JW1167  PID         -  JW1167
 JW1167  STATE/COUNTY-  MD/ALLEGANY
 JW1167  COUNTRY     -  US
 JW1167  USGS QUAD   -  LONACONING (2016)
 JW1167
 JW1167                         *CURRENT SURVEY CONTROL
 JW1167  ______________________________________________________________________
 JW1167* NAD 83(1986) POSITION- 39 30 29.     (N) 078 55 31.     (W)   SCALED
 JW1167* NAVD 88 ORTHO HEIGHT -   326.608 (meters)     1071.55  (feet) ADJUSTED
 JW1167  ______________________________________________________________________
 JW1167  GEOID HEIGHT    -        -32.362 (meters)                     GEOID18
 JW1167  DYNAMIC HEIGHT  -        326.405 (meters)     1070.88  (feet) COMP
 JW1167  MODELED GRAVITY -    979,996.0   (mgal)                       NAVD 88
 JW1167
 JW1167  VERT ORDER      -  FIRST     CLASS II
 JW1167
 JW1167.The horizontal coordinates were scaled from a map and have
 JW1167.an estimated accuracy of +/- 6 seconds.
 JW1167
 JW1167.The orthometric height was determined by differential leveling and
 JW1167.adjusted by the NATIONAL GEODETIC SURVEY
 JW1167.in June 1991.
 JW1167
 JW1167.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1167.GEOID18 height accuracy estimate available here.
 JW1167
 JW1167.Click photographs - Photos may exist for this station.
 JW1167
 JW1167.The dynamic height is computed by dividing the NAVD 88
 JW1167.geopotential number by the normal gravity value computed on the
 JW1167.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1167.degrees latitude (g = 980.6199 gals.).
 JW1167
 JW1167.The modeled gravity was interpolated from observed gravity values.
 JW1167
 JW1167;                    North         East    Units  Estimated Accuracy
 JW1167;SPC MD       -   206,160.      234,430.      MT  (+/- 180 meters Scaled)
 JW1167
 JW1167_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD783752(NAD 83)
 JW1167
 JW1167                          SUPERSEDED SURVEY CONTROL
 JW1167
 JW1167.No superseded survey control is available for this station.
 JW1167
 JW1167_MARKER: I = METAL ROD
 JW1167_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 JW1167+WITH SETTING: INFORMATION.
 JW1167_STAMPING: E 168 1983
 JW1167_MARK LOGO: NGS
 JW1167_PROJECTION: FLUSH
 JW1167_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1167_ROD/PIPE-DEPTH: 2.4 meters
 JW1167
 JW1167  HISTORY     - Date     Condition        Report By
 JW1167  HISTORY     - 1983     MONUMENTED       NGS
 JW1167
 JW1167                          STATION DESCRIPTION
 JW1167
 JW1167'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1167'13.8 KM (8.55 MI) SW FROM CRESAPTOWN.
 JW1167'13.8 KM (8.55 MI) SOUTHWEST ALONG U.S. HIGHWAY 220 FROM THE CALVARY
 JW1167'BAPTIST CHURCH IN CRESAPTOWN TO THE MARK ON THE LEFT, ON THE SOUTHWEST
 JW1167'SIDE OF A POWER POLE, 12.80 METERS (42.0 FT) SOUTHEAST OF THE
 JW1167'CENTERLINE OF THE HIGHWAY, 30.80 METERS (101.0 FT) SOUTHWEST OF THE
 JW1167'CENTER OF A GRAVEL DRIVEWAY FOR A HOUSE TRAILER, 12.95 METERS
 JW1167'(42.5 FT) EAST-NORTHEAST OF A HIGHWAY SPEED LIMIT SIGN, 0.61 METER
 JW1167'(2.0 FT) SOUTHWEST OF POWER POLE G6772.  NOTE--SEVERAL ATTEMPTS WERE
 JW1167'MADE TO DRIVE THE ROD, DRIVEN TO REFUSAL AND ANCHORED.
 JW1167'THE MARK IS 0.61 METERS  SW FROM A WITNESS POST.
 JW1167'THE MARK IS 0.61 M BELOW HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1191 ***********************************************************************
 JW1191  DESIGNATION -  E 169
 JW1191  PID         -  JW1191
 JW1191  STATE/COUNTY-  MD/ALLEGANY
 JW1191  COUNTRY     -  US
 JW1191  USGS QUAD   -  ARTEMAS (2019)
 JW1191
 JW1191                         *CURRENT SURVEY CONTROL
 JW1191  ______________________________________________________________________
 JW1191* NAD 83(1986) POSITION- 39 40 52.     (N) 078 29 01.     (W)   SCALED
 JW1191* NAVD 88 ORTHO HEIGHT -   248.661 (meters)      815.82  (feet) ADJUSTED
 JW1191  ______________________________________________________________________
 JW1191  GEOID HEIGHT    -        -33.311 (meters)                     GEOID18
 JW1191  DYNAMIC HEIGHT  -        248.513 (meters)      815.33  (feet) COMP
 JW1191  MODELED GRAVITY -    980,026.5   (mgal)                       NAVD 88
 JW1191
 JW1191  VERT ORDER      -  FIRST     CLASS II
 JW1191
 JW1191.The horizontal coordinates were scaled from a map and have
 JW1191.an estimated accuracy of +/- 6 seconds.
 JW1191
 JW1191.The orthometric height was determined by differential leveling and
 JW1191.adjusted by the NATIONAL GEODETIC SURVEY
 JW1191.in June 1991.
 JW1191
 JW1191.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1191.GEOID18 height accuracy estimate available here.
 JW1191
 JW1191.Click photographs - Photos may exist for this station.
 JW1191
 JW1191.The dynamic height is computed by dividing the NAVD 88
 JW1191.geopotential number by the normal gravity value computed on the
 JW1191.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1191.degrees latitude (g = 980.6199 gals.).
 JW1191
 JW1191.The modeled gravity was interpolated from observed gravity values.
 JW1191
 JW1191;                    North         East    Units  Estimated Accuracy
 JW1191;SPC MD       -   224,660.      272,720.      MT  (+/- 180 meters Scaled)
 JW1191
 JW1191_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD158953(NAD 83)
 JW1191
 JW1191                          SUPERSEDED SURVEY CONTROL
 JW1191
 JW1191.No superseded survey control is available for this station.
 JW1191
 JW1191_MARKER: DV = VERTICAL CONTROL DISK
 JW1191_SETTING: 66 = SET IN ROCK OUTCROP
 JW1191_STAMPING: E 169 1983
 JW1191_MARK LOGO: NGS
 JW1191_MAGNETIC: N = NO MAGNETIC MATERIAL
 JW1191_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1191+STABILITY: POSITION/ELEVATION WELL
 JW1191_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW1191+SATELLITE: SATELLITE OBSERVATIONS - November 05, 1992
 JW1191
 JW1191  HISTORY     - Date     Condition        Report By
 JW1191  HISTORY     - 1983     MONUMENTED       NGS
 JW1191  HISTORY     - 19921105 GOOD             MDSHA
 JW1191
 JW1191                          STATION DESCRIPTION
 JW1191
 JW1191'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1191'8.5 KM (5.3 MI) EAST FROM FLINTSTONE.
 JW1191'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JW1191'8.5 KM (5.3 MI) EAST ALONG U.S. HIGHWAY 40 FROM THE WEST END OF THE
 JW1191'HIGHWAY BRIDGE OVER FLINTSTONE CREEK IN FLINTSTONE TO THE MARK ON THE
 JW1191'LEFT, IN THE BASE OF A ROCK LEDGE, AT THE JUNCTION OF A GRAVEL ROAD,
 JW1191'32.30 METERS (106.0 FT) NORTH OF THE CENTERLINE OF THE HIGHWAY,
 JW1191'20.11 METERS (66.0 FT) NORTHEAST OF THE NORTH END OF A METAL
 JW1191'GUARDRAIL, 9.14 METERS (30.0 FT) EAST OF THE CENTER OF A GRAVEL ROAD.
 JW1191'THE MARK IS 0.51 METERS  S FROM A WITNESS POST.
 JW1191
 JW1191                          STATION RECOVERY (1992)
 JW1191
 JW1191'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1191'THE MARKER WAS RECOVERED AND FOUND IN GOOD CONDITION.  DUE TO CHANGES
 JW1191'IN THE AREA AND CONSTRUCTION OF INTERSTATE HIGHWAY 68, A COMPLETE NEW
 JW1191'DESCRIPTION IS REQUIRED.  THE MARKER IS LOCATED ABOUT 4.5 MI (7.2 KM)
 JW1191'EAST-SOUTHEAST OF FLINTSTONE, 6.4 MI (10.3 KM) WEST-SOUTHWEST OF
 JW1191'PINEY GROVE AND 1.3 MI (2.1 KM) EAST-SOUTHEAST OF PRATT.  IT IS ON
 JW1191'THE ROAD RIGHT-OF-WAY PROPERTY.  TO REACH FROM A POINT WHERE THE
 JW1191'VICTOR CUSHWA MEMORIAL BRIDGE PASSES OVER THE INTERSTATE HIGHWAY 68
 JW1191'AT THE SIDELING HILL EXHIBIT CENTER, GO WEST ON INTERSTATE HIGHWAY 68
 JW1191'FOR 13.15 MI (21.16 KM) TO THE MARKER ON THE RIGHT, NORTH OF THE
 JW1191'WESTBOUND LANES, IN THE BASE OF A ROCK LEDGE.  THE POINT IS MARKED
 JW1191'WITH A STANDARD NATIONAL GEODETIC SURVEY VERTICAL CONTROL DISK
 JW1191'CEMENTED IN A DRILL HOLE IN BEDROCK.  IT IS 80.0 FT (24.4 M) NORTH OF
 JW1191'THE CENTERLINE OF THE WESTBOUND LANES OF INTERSTATE HIGHWAY 68, 74.0
 JW1191'FT (22.6 M) NORTHEAST OF THE NORTH END OF A 3.5 FT (1.1 M) REINFORCED
 JW1191'CONCRETE PIPE, 58.0 FT (17.7 M) NORTHWEST OF THE LAST EXPOSED POST AT
 JW1191'THE EAST END OF A METAL GUARDRAIL AND ABOUT LEVEL WITH THE SURFACE OF
 JW1191'THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0644 ***********************************************************************
 JW0644  DESIGNATION -  E 17
 JW0644  PID         -  JW0644
 JW0644  STATE/COUNTY-  MD/GARRETT
 JW0644  COUNTRY     -  US
 JW0644  USGS QUAD   -  MCHENRY (2016)
 JW0644
 JW0644                         *CURRENT SURVEY CONTROL
 JW0644  ______________________________________________________________________
 JW0644* NAD 83(1986) POSITION- 39 32 51.     (N) 079 21 09.     (W)   SCALED
 JW0644* NAVD 88 ORTHO HEIGHT -   763.164 (meters)     2503.81  (feet) ADJUSTED
 JW0644  ______________________________________________________________________
 JW0644  GEOID HEIGHT    -        -31.257 (meters)                     GEOID18
 JW0644  DYNAMIC HEIGHT  -        762.652 (meters)     2502.13  (feet) COMP
 JW0644  MODELED GRAVITY -    979,929.8   (mgal)                       NAVD 88
 JW0644
 JW0644  VERT ORDER      -  SECOND    CLASS 0
 JW0644
 JW0644.The horizontal coordinates were scaled from a map and have
 JW0644.an estimated accuracy of +/- 6 seconds.
 JW0644
 JW0644.The orthometric height was determined by differential leveling and
 JW0644.adjusted by the NATIONAL GEODETIC SURVEY
 JW0644.in June 1991.
 JW0644
 JW0644.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0644.GEOID18 height accuracy estimate available here.
 JW0644
 JW0644.Click photographs - Photos may exist for this station.
 JW0644
 JW0644.The dynamic height is computed by dividing the NAVD 88
 JW0644.geopotential number by the normal gravity value computed on the
 JW0644.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0644.degrees latitude (g = 980.6199 gals.).
 JW0644
 JW0644.The modeled gravity was interpolated from observed gravity values.
 JW0644
 JW0644;                    North         East    Units  Estimated Accuracy
 JW0644;SPC MD       -   211,390.      197,810.      MT  (+/- 180 meters Scaled)
 JW0644
 JW0644_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD415788(NAD 83)
 JW0644
 JW0644                          SUPERSEDED SURVEY CONTROL
 JW0644
 JW0644  NGVD 29 (??/??/92)  763.297  (m)         2504.25   (f) ADJ UNCH    2 0
 JW0644
 JW0644.Superseded values are not recommended for survey control.
 JW0644
 JW0644.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0644.See file dsdata.pdf to determine how the superseded data were derived.
 JW0644
 JW0644_MARKER: DB = BENCH MARK DISK
 JW0644_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0644_STAMPING: E 17 1935
 JW0644_MARK LOGO: CGS
 JW0644_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0644+STABILITY: SURFACE MOTION
 JW0644
 JW0644  HISTORY     - Date     Condition        Report By
 JW0644  HISTORY     - 1935     MONUMENTED       CGS
 JW0644
 JW0644                          STATION DESCRIPTION
 JW0644
 JW0644'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0644'7.7 MI SW FROM ACCIDENT.
 JW0644'7.7 MILES SOUTHWEST ALONG U.S. HIGHWAY 219 FROM THE NORTH CITY
 JW0644'LIMITS AT ACCIDENT, GARRETT COUNTY, 75 FEET SOUTH OF A STORE,
 JW0644'20 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 3 FEET WEST
 JW0644'OF A POLE, AND 1 FOOT NORTH OF A FENCE CORNER.  A STANDARD DISK,
 JW0644'STAMPED E 17 1935 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2552 ***********************************************************************
 HU2552  DESIGNATION -  E 170
 HU2552  PID         -  HU2552
 HU2552  STATE/COUNTY-  MD/DORCHESTER
 HU2552  COUNTRY     -  US
 HU2552  USGS QUAD   -  SHARPTOWN (2016)
 HU2552
 HU2552                         *CURRENT SURVEY CONTROL
 HU2552  ______________________________________________________________________
 HU2552* NAD 83(1986) POSITION- 38 33 09.     (N) 075 43 36.     (W)   SCALED
 HU2552* NAVD 88 ORTHO HEIGHT -     1.588 (meters)        5.21  (feet) ADJUSTED
 HU2552  ______________________________________________________________________
 HU2552  GEOID HEIGHT    -        -35.547 (meters)                     GEOID18
 HU2552  DYNAMIC HEIGHT  -          1.587 (meters)        5.21  (feet) COMP
 HU2552  MODELED GRAVITY -    980,012.9   (mgal)                       NAVD 88
 HU2552
 HU2552  VERT ORDER      -  SECOND    CLASS I
 HU2552
 HU2552.The horizontal coordinates were scaled from a map and have
 HU2552.an estimated accuracy of +/- 6 seconds.
 HU2552
 HU2552.The orthometric height was determined by differential leveling and
 HU2552.adjusted by the NATIONAL GEODETIC SURVEY
 HU2552.in June 1991.
 HU2552
 HU2552.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2552.GEOID18 height accuracy estimate available here.
 HU2552
 HU2552.Click photographs - Photos may exist for this station.
 HU2552
 HU2552.The dynamic height is computed by dividing the NAVD 88
 HU2552.geopotential number by the normal gravity value computed on the
 HU2552.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2552.degrees latitude (g = 980.6199 gals.).
 HU2552
 HU2552.The modeled gravity was interpolated from observed gravity values.
 HU2552
 HU2552;                    North         East    Units  Estimated Accuracy
 HU2552;SPC MD       -    99,110.      510,990.      MT  (+/- 180 meters Scaled)
 HU2552
 HU2552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH366673(NAD 83)
 HU2552
 HU2552                          SUPERSEDED SURVEY CONTROL
 HU2552
 HU2552  NGVD 29 (06/12/91)    1.835  (m)            6.02   (f) ADJUSTED    2 1
 HU2552
 HU2552.Superseded values are not recommended for survey control.
 HU2552
 HU2552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2552.See file dsdata.pdf to determine how the superseded data were derived.
 HU2552
 HU2552_MARKER: DB = BENCH MARK DISK
 HU2552_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2552_STAMPING: E 170 1987
 HU2552_MARK LOGO: NGS
 HU2552_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2552_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2552+STABILITY: SURFACE MOTION
 HU2552_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2552+SATELLITE: SATELLITE OBSERVATIONS - 1987
 HU2552
 HU2552  HISTORY     - Date     Condition        Report By
 HU2552  HISTORY     - 1987     MONUMENTED       MDSHA
 HU2552
 HU2552                          STATION DESCRIPTION
 HU2552
 HU2552'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1987
 HU2552'THE MARK IS LOCATED ABOUT 1.0 KM (0.60 MI) NORTHWEST OF SHARPTOWN,
 HU2552'MD.  TO REACH THE MARK FROM THE NORTHWEST END OF THE NEW NANTICOKE
 HU2552'RIVER BRIDGE AT SHARPTOWN, GO NORTHWEST ON STATE ROUTE 313 FOR 0.7 KM
 HU2552'(0.45 MI) TO A SIDE ROAD RIGHT AND THE MARK ON THE RIGHT.  IT IS 14.5
 HU2552'M (47.6 FT) NORTHWEST OF A POWERLINE POLE NUMBERED 43272-99977, 7.4 M
 HU2552'(24.3 FT) WEST OF A POWERLINE POLE WITH NO NUMBER, 8.6 M (28.2 FT)
 HU2552'NORTH-NORTHWEST OF THE CENTERLINE OF GALESTOWN ROAD, 35.2 M (115.5
 HU2552'FT) NORTHEAST OF THE CENTERLINE OF STATE ROUTE 313, AND 48.2 M (158.1
 HU2552'FT) SOUTHEAST OF THE SOUTH CORNER OF A ONE STORY HOUSE.  THE MARK IS
 HU2552'SET IN THE TOP OF A 0.3 M (1.0 FT) ROUND CONCRETE POST FLUSH WITH THE
 HU2552'GROUND AND ABOUT LEVEL WITH GALESTOWN ROAD.  OWNERSHIP--MR.  HARVEY
 HU2552'G. GOINS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2212 ***********************************************************************
 HU2212  DESIGNATION -  E 171
 HU2212  PID         -  HU2212
 HU2212  STATE/COUNTY-  MD/WICOMICO
 HU2212  COUNTRY     -  US
 HU2212  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2212
 HU2212                         *CURRENT SURVEY CONTROL
 HU2212  ______________________________________________________________________
 HU2212* NAD 83(1986) POSITION- 38 29 34.5    (N) 075 45 13.0    (W)   HD_HELD2
 HU2212* NAVD 88 ORTHO HEIGHT -     3.838 (meters)       12.59  (feet) ADJUSTED
 HU2212  ______________________________________________________________________
 HU2212  GEOID HEIGHT    -        -35.557 (meters)                     GEOID18
 HU2212  DYNAMIC HEIGHT  -          3.835 (meters)       12.58  (feet) COMP
 HU2212  MODELED GRAVITY -    980,015.8   (mgal)                       NAVD 88
 HU2212
 HU2212  VERT ORDER      -  SECOND    CLASS I
 HU2212
 HU2212.The horizontal coordinates were established by autonomous hand held GPS
 HU2212.observations and have an estimated accuracy of +/- 10 meters.
 HU2212
 HU2212.The orthometric height was determined by differential leveling and
 HU2212.adjusted by the NATIONAL GEODETIC SURVEY
 HU2212.in June 1991.
 HU2212
 HU2212.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2212.GEOID18 height accuracy estimate available here.
 HU2212
 HU2212.Click photographs - Photos may exist for this station.
 HU2212
 HU2212.The dynamic height is computed by dividing the NAVD 88
 HU2212.geopotential number by the normal gravity value computed on the
 HU2212.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2212.degrees latitude (g = 980.6199 gals.).
 HU2212
 HU2212.The modeled gravity was interpolated from observed gravity values.
 HU2212
 HU2212;                    North         East    Units  Estimated Accuracy
 HU2212;SPC MD       -    92,459.      508,730.      MT  (+/- 10 meters HH2 GPS)
 HU2212
 HU2212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3427960776(NAD 83)
 HU2212
 HU2212                          SUPERSEDED SURVEY CONTROL
 HU2212
 HU2212  NGVD 29 (06/12/91)    4.083  (m)           13.40   (f) ADJUSTED    2 1
 HU2212
 HU2212.Superseded values are not recommended for survey control.
 HU2212
 HU2212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2212.See file dsdata.pdf to determine how the superseded data were derived.
 HU2212
 HU2212_MARKER: DV = VERTICAL CONTROL DISK
 HU2212_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU2212_SP_SET: HEADWALL
 HU2212_STAMPING: E 171 1989
 HU2212_MARK LOGO: NGS
 HU2212_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2212_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2212+STABILITY: SURFACE MOTION
 HU2212_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2212+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2017
 HU2212
 HU2212  HISTORY     - Date     Condition        Report By
 HU2212  HISTORY     - 1989     MONUMENTED       MDSHA
 HU2212  HISTORY     - 19900221 GOOD             NGS
 HU2212  HISTORY     - 20170606 GOOD             ARCSHE
 HU2212
 HU2212                          STATION DESCRIPTION
 HU2212
 HU2212'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2212'3.4 KM (2.11 MI) NORTHERLY ALONG STATE HIGHWAY 313 FROM THE JUNCTION
 HU2212'OF STATE HIGHWAY 54 IN MARDELA SPRINGS, IN TOP OF AND 0.4 M (1.31 FT)
 HU2212'SOUTH OF THE NORTH END OF THE WEST CONCRETE HEADWALL OF A PIPE
 HU2212'CULVERT, 9.4 M (30.84 FT) WEST OF THE CENTERLINE OF THE HIGHWAY, AND
 HU2212'0.5 M (1.64 FT) BELOW THE LEVEL OF THE HIGHWAY.
 HU2212
 HU2212                          STATION RECOVERY (2017)
 HU2212
 HU2212'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2212'THE MARK IS ON THE OUTSIDE OF A CURVE IN FRONT OF HOUSE NUMBER 10850
 HU2212'AND 7.4 FT (2.3 M) WEST OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6167 ***********************************************************************
 JV6167  DESIGNATION -  E 172
 JV6167  PID         -  JV6167
 JV6167  STATE/COUNTY-  MD/HARFORD
 JV6167  COUNTRY     -  US
 JV6167  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6167
 JV6167                         *CURRENT SURVEY CONTROL
 JV6167  ______________________________________________________________________
 JV6167* NAD 83(1986) POSITION- 39 30 31.     (N) 076 24 16.     (W)   SCALED
 JV6167* NAVD 88 ORTHO HEIGHT -   131.567 (meters)      431.65  (feet) ADJUSTED
 JV6167  ______________________________________________________________________
 JV6167  GEOID HEIGHT    -        -32.732 (meters)                     GEOID18
 JV6167  DYNAMIC HEIGHT  -        131.500 (meters)      431.43  (feet) COMP
 JV6167  MODELED GRAVITY -    980,112.2   (mgal)                       NAVD 88
 JV6167
 JV6167  VERT ORDER      -  FIRST     CLASS II
 JV6167
 JV6167.The horizontal coordinates were scaled from a map and have
 JV6167.an estimated accuracy of +/- 6 seconds.
 JV6167
 JV6167.The orthometric height was determined by differential leveling and
 JV6167.adjusted by the NATIONAL GEODETIC SURVEY
 JV6167.in June 1991.
 JV6167
 JV6167.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6167.GEOID18 height accuracy estimate available here.
 JV6167
 JV6167.Click photographs - Photos may exist for this station.
 JV6167
 JV6167.The dynamic height is computed by dividing the NAVD 88
 JV6167.geopotential number by the normal gravity value computed on the
 JV6167.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6167.degrees latitude (g = 980.6199 gals.).
 JV6167
 JV6167.The modeled gravity was interpolated from observed gravity values.
 JV6167
 JV6167;                    North         East    Units  Estimated Accuracy
 JV6167;SPC MD       -   204,640.      451,220.      MT  (+/- 180 meters Scaled)
 JV6167
 JV6167_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ792741(NAD 83)
 JV6167
 JV6167                          SUPERSEDED SURVEY CONTROL
 JV6167
 JV6167.No superseded survey control is available for this station.
 JV6167
 JV6167_MARKER: I = METAL ROD
 JV6167_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6167_STAMPING: E 172 1989
 JV6167_MARK LOGO: NGS
 JV6167_PROJECTION: FLUSH
 JV6167_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6167_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6167_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6167+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2002
 JV6167_ROD/PIPE-DEPTH: 4.9 meters
 JV6167
 JV6167  HISTORY     - Date     Condition        Report By
 JV6167  HISTORY     - 1989     MONUMENTED       NGS
 JV6167  HISTORY     - 20020217 GOOD             USPSQD
 JV6167
 JV6167                          STATION DESCRIPTION
 JV6167
 JV6167'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6167'2.2 KM (1.35 MI) NORTHERLY ALONG STATE HIGHWAY 152 FROM ITS JUNCTION
 JV6167'WITH U.S. HIGHWAY 1 IN LYNCHS CORNER, 14.9 M (48.9 FT) NORTHEAST OF
 JV6167'THE CENTERLINE OF THE HIGHWAY, 4.4 M (14.4 FT) SOUTHEAST OF A FENCE
 JV6167'CORNER, 0.3 M (1.0 FT) SOUTHEAST OF A WITNESS POST AND FENCE, AND
 JV6167'LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 JV6167'5-INCH LOGO CAP.
 JV6167
 JV6167                          STATION RECOVERY (2002)
 JV6167
 JV6167'RECOVERY NOTE BY US POWER SQUADRON 2002 (RG)
 JV6167'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6208 ***********************************************************************
 JV6208  DESIGNATION -  E 173
 JV6208  PID         -  JV6208
 JV6208  STATE/COUNTY-  MD/HARFORD
 JV6208  COUNTRY     -  US
 JV6208  USGS QUAD   -  FAWN GROVE (2019)
 JV6208
 JV6208                         *CURRENT SURVEY CONTROL
 JV6208  ______________________________________________________________________
 JV6208* NAD 83(1986) POSITION- 39 41 50.1    (N) 076 25 02.5    (W)   HD_HELD2
 JV6208* NAVD 88 ORTHO HEIGHT -   159.611 (meters)      523.66  (feet) ADJUSTED
 JV6208  ______________________________________________________________________
 JV6208  GEOID HEIGHT    -        -32.654 (meters)                     GEOID18
 JV6208  DYNAMIC HEIGHT  -        159.531 (meters)      523.39  (feet) COMP
 JV6208  MODELED GRAVITY -    980,124.1   (mgal)                       NAVD 88
 JV6208
 JV6208  VERT ORDER      -  FIRST     CLASS II
 JV6208
 JV6208.The horizontal coordinates were established by autonomous hand held GPS
 JV6208.observations and have an estimated accuracy of +/- 10 meters.
 JV6208
 JV6208.The orthometric height was determined by differential leveling and
 JV6208.adjusted by the NATIONAL GEODETIC SURVEY
 JV6208.in June 1991.
 JV6208
 JV6208.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6208.GEOID18 height accuracy estimate available here.
 JV6208
 JV6208.Click photographs - Photos may exist for this station.
 JV6208
 JV6208.The dynamic height is computed by dividing the NAVD 88
 JV6208.geopotential number by the normal gravity value computed on the
 JV6208.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6208.degrees latitude (g = 980.6199 gals.).
 JV6208
 JV6208.The modeled gravity was interpolated from observed gravity values.
 JV6208
 JV6208;                    North         East    Units  Estimated Accuracy
 JV6208;SPC MD       -   225,575.      449,975.      MT  (+/- 10 meters HH2 GPS)
 JV6208
 JV6208_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7847995115(NAD 83)
 JV6208
 JV6208                          SUPERSEDED SURVEY CONTROL
 JV6208
 JV6208.No superseded survey control is available for this station.
 JV6208
 JV6208_MARKER: I = METAL ROD
 JV6208_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6208_STAMPING: E 173 1989
 JV6208_MARK LOGO: NGS
 JV6208_PROJECTION: FLUSH
 JV6208_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6208_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6208+STABILITY: POSITION/ELEVATION WELL
 JV6208_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6208+SATELLITE: SATELLITE OBSERVATIONS - November 08, 2004
 JV6208_ROD/PIPE-DEPTH: 8.5 meters
 JV6208_SLEEVE-DEPTH  : 3.0 meters
 JV6208
 JV6208  HISTORY     - Date     Condition        Report By
 JV6208  HISTORY     - 1989     MONUMENTED       NGS
 JV6208  HISTORY     - 20041108 GOOD             GEOCAC
 JV6208
 JV6208                          STATION DESCRIPTION
 JV6208
 JV6208'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6208'3.4 KM (2.10 MI) SOUTHERLY ALONG STATE HIGHWAYS 124 AND 163 FROM THE
 JV6208'JUNCTION OF STATE HIGHWAY 851 IN FAWN GROVE, PENNSYLVANIA, THENCE 3.0
 JV6208'KM (1.85 MI) EASTERLY ALONG STATE HIGHWAY 136, 26.7 M (87.6 FT)
 JV6208'SOUTHWEST OF THE CENTERLINE OF HIGHWAY 24, 15.0 M (49.2 FT) SOUTH OF
 JV6208'A UTILITY POLE, 7.2 M (23.6 FT) WEST OF THE CENTER OF CLERMONT MILL
 JV6208'ROAD, 0.9 M (3.0 FT) ABOVE THE LEVEL OF THE HIGHWAY, AND 0.7 M (2.3
 JV6208'FT) EAST OF A FENCE AND WITNESS POST.  NOTE--ACCESS TO THE DATUM
 JV6208'POINT IS HAD THROUGH A 5-INCH LOGO CAP.
 JV6208
 JV6208                          STATION RECOVERY (2004)
 JV6208
 JV6208'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6208'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6188 ***********************************************************************
 JV6188  DESIGNATION -  E 174
 JV6188  PID         -  JV6188
 JV6188  STATE/COUNTY-  MD/HARFORD
 JV6188  COUNTRY     -  US
 JV6188  USGS QUAD   -  FAWN GROVE (2019)
 JV6188
 JV6188                         *CURRENT SURVEY CONTROL
 JV6188  ______________________________________________________________________
 JV6188* NAD 83(1986) POSITION- 39 41 19.8    (N) 076 22 58.5    (W)   HD_HELD2
 JV6188* NAVD 88 ORTHO HEIGHT -   127.838 (meters)      419.42  (feet) ADJUSTED
 JV6188  ______________________________________________________________________
 JV6188  GEOID HEIGHT    -        -32.702 (meters)                     GEOID18
 JV6188  DYNAMIC HEIGHT  -        127.773 (meters)      419.20  (feet) COMP
 JV6188  MODELED GRAVITY -    980,121.0   (mgal)                       NAVD 88
 JV6188
 JV6188  VERT ORDER      -  FIRST     CLASS II
 JV6188
 JV6188.The horizontal coordinates were established by autonomous hand held GPS
 JV6188.observations and have an estimated accuracy of +/- 10 meters.
 JV6188
 JV6188.The orthometric height was determined by differential leveling and
 JV6188.adjusted by the NATIONAL GEODETIC SURVEY
 JV6188.in June 1991.
 JV6188
 JV6188.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6188.GEOID18 height accuracy estimate available here.
 JV6188
 JV6188.Click photographs - Photos may exist for this station.
 JV6188
 JV6188.The dynamic height is computed by dividing the NAVD 88
 JV6188.geopotential number by the normal gravity value computed on the
 JV6188.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6188.degrees latitude (g = 980.6199 gals.).
 JV6188
 JV6188.The modeled gravity was interpolated from observed gravity values.
 JV6188
 JV6188;                    North         East    Units  Estimated Accuracy
 JV6188;SPC MD       -   224,660.      452,936.      MT  (+/- 10 meters HH2 GPS)
 JV6188
 JV6188_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8141894135(NAD 83)
 JV6188
 JV6188                          SUPERSEDED SURVEY CONTROL
 JV6188
 JV6188.No superseded survey control is available for this station.
 JV6188
 JV6188_MARKER: I = METAL ROD
 JV6188_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6188_STAMPING: E 174 1989
 JV6188_MARK LOGO: NGS
 JV6188_PROJECTION: FLUSH
 JV6188_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6188_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6188_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6188+SATELLITE: SATELLITE OBSERVATIONS - November 08, 2004
 JV6188_ROD/PIPE-DEPTH: 4.0 meters
 JV6188
 JV6188  HISTORY     - Date     Condition        Report By
 JV6188  HISTORY     - 1989     MONUMENTED       NGS
 JV6188  HISTORY     - 20041108 GOOD             GEOCAC
 JV6188
 JV6188                          STATION DESCRIPTION
 JV6188
 JV6188'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6188'3.4 KM (2.10 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 165 FROM THE
 JV6188'JUNCTION OF STATE HIGHWAY 136 IN WHITEFORD, THENCE 0.6 KM (0.35 MI)
 JV6188'WESTERLY ALONG SAINT MARYS ROAD, 18.6 M (61.0 FT) EAST OF THE EASTERN
 JV6188'EDGE OF THE CONCRETE FOUNDATION OF A GRAIN STORAGE BIN, 11.0 M (36.1
 JV6188'FT) NORTHWEST OF THE CENTER OF THE MOST EASTERLY DRIVEWAY LEADING TO
 JV6188'A HOUSE AT 613 SAINT MARYS ROAD, 5.0 M (16.4 FT) SOUTHWEST OF THE
 JV6188'CENTERLINE OF THE ROAD, 0.6 M (2.0 FT) SOUTHWEST OF A WITNESS POST
 JV6188'AND UTILITY POLE NUMBER 24658, AND LEVEL WITH THE ROAD.  NOTE--ACCESS
 JV6188'TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6188
 JV6188                          STATION RECOVERY (2004)
 JV6188
 JV6188'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6188'THE DESCRIBED MOST EASTERLY DRIVEWAY LEADS TO A SILO AND BARN,
 JV6188'OTHERWISE AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2424 ***********************************************************************
 HU2424  DESIGNATION -  E 175
 HU2424  PID         -  HU2424
 HU2424  STATE/COUNTY-  MD/WICOMICO
 HU2424  COUNTRY     -  US
 HU2424  USGS QUAD   -  WANGO (2016)
 HU2424
 HU2424                         *CURRENT SURVEY CONTROL
 HU2424  ______________________________________________________________________
 HU2424* NAD 83(1986) POSITION- 38 19 53.     (N) 075 25 16.     (W)   SCALED
 HU2424* NAVD 88 ORTHO HEIGHT -    15.393 (meters)       50.50  (feet) ADJUSTED
 HU2424  ______________________________________________________________________
 HU2424  GEOID HEIGHT    -        -35.973 (meters)                     GEOID18
 HU2424  DYNAMIC HEIGHT  -         15.383 (meters)       50.47  (feet) COMP
 HU2424  MODELED GRAVITY -    980,001.8   (mgal)                       NAVD 88
 HU2424
 HU2424  VERT ORDER      -  SECOND    CLASS I
 HU2424
 HU2424.The horizontal coordinates were scaled from a map and have
 HU2424.an estimated accuracy of +/- 6 seconds.
 HU2424
 HU2424.The orthometric height was determined by differential leveling and
 HU2424.adjusted by the NATIONAL GEODETIC SURVEY
 HU2424.in June 1991.
 HU2424
 HU2424.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2424.GEOID18 height accuracy estimate available here.
 HU2424
 HU2424.Click photographs - Photos may exist for this station.
 HU2424
 HU2424.The dynamic height is computed by dividing the NAVD 88
 HU2424.geopotential number by the normal gravity value computed on the
 HU2424.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2424.degrees latitude (g = 980.6199 gals.).
 HU2424
 HU2424.The modeled gravity was interpolated from observed gravity values.
 HU2424
 HU2424;                    North         East    Units  Estimated Accuracy
 HU2424;SPC MD       -    74,980.      538,040.      MT  (+/- 180 meters Scaled)
 HU2424
 HU2424_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH631426(NAD 83)
 HU2424
 HU2424                          SUPERSEDED SURVEY CONTROL
 HU2424
 HU2424  NGVD 29 (06/12/91)   15.639  (m)           51.31   (f) ADJUSTED    2 1
 HU2424
 HU2424.Superseded values are not recommended for survey control.
 HU2424
 HU2424.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2424.See file dsdata.pdf to determine how the superseded data were derived.
 HU2424
 HU2424_MARKER: I = METAL ROD
 HU2424_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2424_STAMPING: E 175 1990
 HU2424_MARK LOGO: NGS
 HU2424_PROJECTION: RECESSED 1 CENTIMETERS
 HU2424_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2424_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2424_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2424+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2424_ROD/PIPE-DEPTH: 27.6 meters
 HU2424_SLEEVE-DEPTH  : 0.9 meters
 HU2424
 HU2424  HISTORY     - Date     Condition        Report By
 HU2424  HISTORY     - 1990     MONUMENTED       NGS
 HU2424
 HU2424                          STATION DESCRIPTION
 HU2424
 HU2424'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2424'4.0 KM (2.49 MI) WESTERLY ALONG STATE HIGHWAY 350 (MOUNT HERMON ROAD)
 HU2424'FROM THE JUNCTION OF STATE HIGHWAY 354 (WILLARDS WHITON ROAD) IN
 HU2424'POWELLVILLE, 33.4 M (109.58 FT) WEST OF THE NORTHWEST CORNER OF
 HU2424'ELECTRIC TRANSFORMER BOX NUMBER 753 146 21 3 C, 14.0 M (45.93 FT)
 HU2424'EAST OF THE CENTER OF A DRIVEWAY, 9.3 M (30.51 FT) SOUTH OF THE
 HU2424'CENTERLINE OF THE HIGHWAY, 0.3 M (0.98 FT) ABOVE THE LEVEL OF THE
 HU2424'HIGHWAY, AND 0.3 M (0.98 FT) NORTH OF A WITNESS POST.  NOTE--ACCESS
 HU2424'TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2424'PROPERTY OWNED BY DANIEL T. SPARROW, RT 1 BOX 119, PARSONSBURG, MD
 HU2424'21849, TELEPHONE NUMBER (301) 835-8282.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2313 ***********************************************************************
 HU2313  DESIGNATION -  E 176
 HU2313  PID         -  HU2313
 HU2313  STATE/COUNTY-  MD/WICOMICO
 HU2313  COUNTRY     -  US
 HU2313  USGS QUAD   -  HEBRON (2016)
 HU2313
 HU2313                         *CURRENT SURVEY CONTROL
 HU2313  ______________________________________________________________________
 HU2313* NAD 83(1986) POSITION- 38 25 30.     (N) 075 39 55.     (W)   SCALED
 HU2313* NAVD 88 ORTHO HEIGHT -    13.035 (meters)       42.77  (feet) ADJUSTED
 HU2313  ______________________________________________________________________
 HU2313  GEOID HEIGHT    -        -35.698 (meters)                     GEOID18
 HU2313  DYNAMIC HEIGHT  -         13.027 (meters)       42.74  (feet) COMP
 HU2313  MODELED GRAVITY -    980,011.2   (mgal)                       NAVD 88
 HU2313
 HU2313  VERT ORDER      -  SECOND    CLASS I
 HU2313
 HU2313.The horizontal coordinates were scaled from a map and have
 HU2313.an estimated accuracy of +/- 6 seconds.
 HU2313
 HU2313.The orthometric height was determined by differential leveling and
 HU2313.adjusted by the NATIONAL GEODETIC SURVEY
 HU2313.in June 1991.
 HU2313
 HU2313.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2313.GEOID18 height accuracy estimate available here.
 HU2313
 HU2313.Click photographs - Photos may exist for this station.
 HU2313
 HU2313.The dynamic height is computed by dividing the NAVD 88
 HU2313.geopotential number by the normal gravity value computed on the
 HU2313.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2313.degrees latitude (g = 980.6199 gals.).
 HU2313
 HU2313.The modeled gravity was interpolated from observed gravity values.
 HU2313
 HU2313;                    North         East    Units  Estimated Accuracy
 HU2313;SPC MD       -    85,030.      516,550.      MT  (+/- 180 meters Scaled)
 HU2313
 HU2313_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH419531(NAD 83)
 HU2313
 HU2313                          SUPERSEDED SURVEY CONTROL
 HU2313
 HU2313  NGVD 29 (06/12/91)   13.281  (m)           43.57   (f) ADJUSTED    2 1
 HU2313
 HU2313.Superseded values are not recommended for survey control.
 HU2313
 HU2313.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2313.See file dsdata.pdf to determine how the superseded data were derived.
 HU2313
 HU2313_MARKER: I = METAL ROD
 HU2313_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2313_STAMPING: E 176 1990
 HU2313_MARK LOGO: NGS
 HU2313_PROJECTION: RECESSED 2 CENTIMETERS
 HU2313_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2313_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2313_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2313+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2313_ROD/PIPE-DEPTH: 26.8 meters
 HU2313_SLEEVE-DEPTH  : 0.9 meters
 HU2313
 HU2313  HISTORY     - Date     Condition        Report By
 HU2313  HISTORY     - 1990     MONUMENTED       NGS
 HU2313
 HU2313                          STATION DESCRIPTION
 HU2313
 HU2313'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2313'2.6 KM (1.62 MI) NORTHEASTERLY ALONG STATE HIGHWAY 347 FROM THE
 HU2313'JUNCTION OF RAILROAD AVENUE IN HEBRON, THENCE 0.5 KM (0.31 MI)
 HU2313'EASTERLY ALONG MEMORY GARDEN LANE, 6.7 M (21.98 FT) WEST OF THE
 HU2313'CENTER OF THE LANE, 5.9 M (19.36 FT) SOUTH OF THE EXTENDED CENTER OF
 HU2313'LOG CABIN ROAD, 4.4 M (14.44 FT) SOUTHEAST OF THE NELSON HEADSTONE,
 HU2313'2.3 M (7.55 FT) WEST OF UTILITY POLE NUMBER 1294, AND 0.4 M (1.31 FT)
 HU2313'ABOVE THE LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS
 HU2313'THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY
 HU2313'SPRING HILL MEMORY GARDENS, JIM WOLF, PRESIDENT, P.O. BOX 1664,
 HU2313'SALISBURY, MD 21802, TELEPHONE NUMBER (301) 749-1411.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6214 ***********************************************************************
 JV6214  DESIGNATION -  E 177
 JV6214  PID         -  JV6214
 JV6214  STATE/COUNTY-  MD/HARFORD
 JV6214  COUNTRY     -  US
 JV6214  USGS QUAD   -  BEL AIR (2016)
 JV6214
 JV6214                         *CURRENT SURVEY CONTROL
 JV6214  ______________________________________________________________________
 JV6214* NAD 83(1986) POSITION- 39 36 22.     (N) 076 18 36.     (W)   SCALED
 JV6214* NAVD 88 ORTHO HEIGHT -   120.816 (meters)      396.38  (feet) ADJUSTED
 JV6214  ______________________________________________________________________
 JV6214  GEOID HEIGHT    -        -32.749 (meters)                     GEOID18
 JV6214  DYNAMIC HEIGHT  -        120.755 (meters)      396.18  (feet) COMP
 JV6214  MODELED GRAVITY -    980,123.9   (mgal)                       NAVD 88
 JV6214
 JV6214  VERT ORDER      -  FIRST     CLASS II
 JV6214
 JV6214.The horizontal coordinates were scaled from a map and have
 JV6214.an estimated accuracy of +/- 6 seconds.
 JV6214
 JV6214.The orthometric height was determined by differential leveling and
 JV6214.adjusted by the NATIONAL GEODETIC SURVEY
 JV6214.in June 1991.
 JV6214
 JV6214.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6214.GEOID18 height accuracy estimate available here.
 JV6214
 JV6214.Click photographs - Photos may exist for this station.
 JV6214
 JV6214.The dynamic height is computed by dividing the NAVD 88
 JV6214.geopotential number by the normal gravity value computed on the
 JV6214.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6214.degrees latitude (g = 980.6199 gals.).
 JV6214
 JV6214.The modeled gravity was interpolated from observed gravity values.
 JV6214
 JV6214;                    North         East    Units  Estimated Accuracy
 JV6214;SPC MD       -   215,520.      459,260.      MT  (+/- 180 meters Scaled)
 JV6214
 JV6214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ875848(NAD 83)
 JV6214
 JV6214                          SUPERSEDED SURVEY CONTROL
 JV6214
 JV6214.No superseded survey control is available for this station.
 JV6214
 JV6214_MARKER: I = METAL ROD
 JV6214_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6214_STAMPING: E 177 1989
 JV6214_MARK LOGO: NGS
 JV6214_PROJECTION: FLUSH
 JV6214_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6214_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6214_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6214+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2001
 JV6214_ROD/PIPE-DEPTH: 8.4 meters
 JV6214
 JV6214  HISTORY     - Date     Condition        Report By
 JV6214  HISTORY     - 1989     MONUMENTED       NGS
 JV6214  HISTORY     - 20010217 GOOD             USPSQD
 JV6214
 JV6214                          STATION DESCRIPTION
 JV6214
 JV6214'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6214'1.6 KM (1.00 MI) SOUTHERLY ALONG STATE HIGHWAY 136 FROM THE JUNCTION
 JV6214'OF STATE HIGHWAY 440 IN DUBLIN, THENCE 5.2 KM (3.25 MI) SOUTHWESTERLY
 JV6214'ALONG U.S. HIGHWAY 1, 23.0 M (75.5 FT) SOUTHWEST OF THE SOUTHWEST
 JV6214'CORNER OF THE WORKS YARN SHOP AT 2721 U.S. HIGHWAY 1, 8.7 M (28.5
 JV6214'FT) SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 2.3 M (7.5 FT)
 JV6214'SOUTHWEST OF UTILITY POLE NUMBER 38520, 0.3 M (1.0 FT) NORTHWEST OF A
 JV6214'WITNESS POST, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO THE DATUM
 JV6214'POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6214
 JV6214                          STATION RECOVERY (2001)
 JV6214
 JV6214'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV6214'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2513 ***********************************************************************
 HU2513  DESIGNATION -  E 178
 HU2513  PID         -  HU2513
 HU2513  STATE/COUNTY-  MD/WICOMICO
 HU2513  COUNTRY     -  US
 HU2513  USGS QUAD   -  EDEN (2016)
 HU2513
 HU2513                         *CURRENT SURVEY CONTROL
 HU2513  ______________________________________________________________________
 HU2513* NAD 83(1986) POSITION- 38 18 37.02   (N) 075 42 17.55   (W)   HD_HELD1
 HU2513* NAVD 88 ORTHO HEIGHT -     6.742 (meters)       22.12  (feet) ADJUSTED
 HU2513  ______________________________________________________________________
 HU2513  GEOID HEIGHT    -        -35.839 (meters)                     GEOID18
 HU2513  DYNAMIC HEIGHT  -          6.738 (meters)       22.11  (feet) COMP
 HU2513  MODELED GRAVITY -    979,999.3   (mgal)                       NAVD 88
 HU2513
 HU2513  VERT ORDER      -  SECOND    CLASS I
 HU2513
 HU2513.The horizontal coordinates were determined by differentially corrected
 HU2513.hand held GPS observations or other comparable positioning techniques
 HU2513.and have an estimated accuracy of +/- 3 meters.
 HU2513
 HU2513.The orthometric height was determined by differential leveling and
 HU2513.adjusted by the NATIONAL GEODETIC SURVEY
 HU2513.in June 1991.
 HU2513
 HU2513.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2513.GEOID18 height accuracy estimate available here.
 HU2513
 HU2513.Click photographs - Photos may exist for this station.
 HU2513
 HU2513.The dynamic height is computed by dividing the NAVD 88
 HU2513.geopotential number by the normal gravity value computed on the
 HU2513.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2513.degrees latitude (g = 980.6199 gals.).
 HU2513
 HU2513.The modeled gravity was interpolated from observed gravity values.
 HU2513
 HU2513;                    North         East    Units  Estimated Accuracy
 HU2513;SPC MD       -    72,247.8     513,269.1     MT  (+/- 3 meters HH1 GPS) 
 HU2513
 HU2513_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3837540477(NAD 83)
 HU2513
 HU2513                          SUPERSEDED SURVEY CONTROL
 HU2513
 HU2513  NGVD 29 (06/12/91)    6.998  (m)           22.96   (f) ADJUSTED    2 1
 HU2513
 HU2513.Superseded values are not recommended for survey control.
 HU2513
 HU2513.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2513.See file dsdata.pdf to determine how the superseded data were derived.
 HU2513
 HU2513_MARKER: I = METAL ROD
 HU2513_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2513_STAMPING: E 178 1990
 HU2513_MARK LOGO: NGS
 HU2513_PROJECTION: RECESSED 5 CENTIMETERS
 HU2513_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2513_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2513_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2513+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2513_ROD/PIPE-DEPTH: 14.6 meters
 HU2513_SLEEVE-DEPTH  : 0.9 meters
 HU2513
 HU2513  HISTORY     - Date     Condition        Report By
 HU2513  HISTORY     - 1990     MONUMENTED       NGS
 HU2513
 HU2513                          STATION DESCRIPTION
 HU2513
 HU2513'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2513'5.5 KM (3.42 MI) WESTERLY ALONG WALNUT TREE ROAD FROM THE JUNCTION OF
 HU2513'ALLEN ROAD IN FRUITLAND, 36.9 M (121.06 FT) WEST OF THE SOUTHWEST
 HU2513'CORNER OF A HOUSE, 10.2 M (33.46 FT) NORTHEAST OF THE CENTERLINE OF
 HU2513'UPPER FERRY ROAD, 8.2 M (26.90 FT) SOUTHEAST OF THE CENTER OF THE
 HU2513'ROAD, 0.6 M (1.97 FT) SOUTHWEST OF UTILITY POLE NUMBER 734 200 36 501
 HU2513'WITH ONE GUY WIRE, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE
 HU2513'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2204 ***********************************************************************
 HU2204  DESIGNATION -  E 179
 HU2204  PID         -  HU2204
 HU2204  STATE/COUNTY-  MD/WICOMICO
 HU2204  COUNTRY     -  US
 HU2204  USGS QUAD   -  HEBRON (2016)
 HU2204
 HU2204                         *CURRENT SURVEY CONTROL
 HU2204  ______________________________________________________________________
 HU2204* NAD 83(1986) POSITION- 38 28 11.0    (N) 075 42 21.6    (W)   HD_HELD2
 HU2204* NAVD 88 ORTHO HEIGHT -    10.454 (meters)       34.30  (feet) ADJUSTED
 HU2204  ______________________________________________________________________
 HU2204  GEOID HEIGHT    -        -35.623 (meters)                     GEOID18
 HU2204  DYNAMIC HEIGHT  -         10.447 (meters)       34.27  (feet) COMP
 HU2204  MODELED GRAVITY -    980,014.4   (mgal)                       NAVD 88
 HU2204
 HU2204  VERT ORDER      -  SECOND    CLASS I
 HU2204
 HU2204.The horizontal coordinates were established by autonomous hand held GPS
 HU2204.observations and have an estimated accuracy of +/- 10 meters.
 HU2204
 HU2204.The orthometric height was determined by differential leveling and
 HU2204.adjusted by the NATIONAL GEODETIC SURVEY
 HU2204.in June 1991.
 HU2204
 HU2204.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2204.GEOID18 height accuracy estimate available here.
 HU2204
 HU2204.Click photographs - Photos may exist for this station.
 HU2204
 HU2204.The dynamic height is computed by dividing the NAVD 88
 HU2204.geopotential number by the normal gravity value computed on the
 HU2204.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2204.degrees latitude (g = 980.6199 gals.).
 HU2204
 HU2204.The modeled gravity was interpolated from observed gravity values.
 HU2204
 HU2204;                    North         East    Units  Estimated Accuracy
 HU2204;SPC MD       -    89,943.      512,920.      MT  (+/- 10 meters HH2 GPS)
 HU2204
 HU2204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3841258169(NAD 83)
 HU2204
 HU2204                          SUPERSEDED SURVEY CONTROL
 HU2204
 HU2204  NGVD 29 (06/12/91)   10.700  (m)           35.10   (f) ADJUSTED    2 1
 HU2204
 HU2204.Superseded values are not recommended for survey control.
 HU2204
 HU2204.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2204.See file dsdata.pdf to determine how the superseded data were derived.
 HU2204
 HU2204_MARKER: F = FLANGE-ENCASED ROD
 HU2204_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2204_STAMPING: E 179 1990
 HU2204_MARK LOGO: NGS
 HU2204_PROJECTION: RECESSED 15 CENTIMETERS
 HU2204_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2204_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2204_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2204+SATELLITE: SATELLITE OBSERVATIONS - June 07, 2017
 HU2204_ROD/PIPE-DEPTH: 24.3 meters
 HU2204_SLEEVE-DEPTH  : 0.9 meters
 HU2204
 HU2204  HISTORY     - Date     Condition        Report By
 HU2204  HISTORY     - 1990     MONUMENTED       NGS
 HU2204  HISTORY     - 20170607 GOOD             ARCSHE
 HU2204
 HU2204                          STATION DESCRIPTION
 HU2204
 HU2204'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2204'3.6 KM (2.24 MI) EASTERLY ALONG STATE HIGHWAY 54 FROM THE JUNCTION OF
 HU2204'STATE HIGHWAY 313 IN MARDELA SPRINGS, THENCE 0.6 KM (0.37 MI)
 HU2204'NORTHERLY ALONG NORRIS TWILLEY ROAD, 32.7 M (107.28 FT) NORTH OF THE
 HU2204'NORTHWEST CORNER OF A HOUSE, 24.9 M (81.69 FT) NORTHEAST OF THE
 HU2204'CENTER OF A DRIVEWAY, 8.1 M (26.57 FT) SOUTHEAST OF THE CENTERLINE OF
 HU2204'THE ROAD, 2.3 M (7.55 FT) SOUTH OF A FENCE, AND LEVEL WITH THE ROAD.
 HU2204'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE
 HU2204'MARK IS ON PROPERTY OWNED BY MR. NORRIS TWILLEY, RT 2 BOX 104,
 HU2204'DELMAR , MD 21875, TELEPHONE NUMBER (301)883-3576.
 HU2204
 HU2204                          STATION RECOVERY (2017)
 HU2204
 HU2204'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2204'THE MARK IS ALSO 10.5 FT (3.2 M) SOUTH OF A TRANSFORMER BOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1519 ***********************************************************************
 HV1519  DESIGNATION -  E 18
 HV1519  PID         -  HV1519
 HV1519  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1519  COUNTRY     -  US
 HV1519  USGS QUAD   -  SOUTH RIVER (2016)
 HV1519
 HV1519                         *CURRENT SURVEY CONTROL
 HV1519  ______________________________________________________________________
 HV1519* NAD 83(1986) POSITION- 38 52 39.     (N) 076 36 19.     (W)   SCALED
 HV1519* NAVD 88 ORTHO HEIGHT -    51.547 (meters)      169.12  (feet) ADJUSTED
 HV1519  ______________________________________________________________________
 HV1519  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 HV1519  DYNAMIC HEIGHT  -         51.518 (meters)      169.02  (feet) COMP
 HV1519  MODELED GRAVITY -    980,062.8   (mgal)                       NAVD 88
 HV1519
 HV1519  VERT ORDER      -  SECOND    CLASS 0
 HV1519
 HV1519.The horizontal coordinates were scaled from a map and have
 HV1519.an estimated accuracy of +/- 6 seconds.
 HV1519
 HV1519.The orthometric height was determined by differential leveling and
 HV1519.adjusted by the NATIONAL GEODETIC SURVEY
 HV1519.in June 1991.
 HV1519
 HV1519.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1519.GEOID18 height accuracy estimate available here.
 HV1519
 HV1519.Click photographs - Photos may exist for this station.
 HV1519
 HV1519.The dynamic height is computed by dividing the NAVD 88
 HV1519.geopotential number by the normal gravity value computed on the
 HV1519.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1519.degrees latitude (g = 980.6199 gals.).
 HV1519
 HV1519.The modeled gravity was interpolated from observed gravity values.
 HV1519
 HV1519;                    North         East    Units  Estimated Accuracy
 HV1519;SPC MD       -   134,480.      434,250.      MT  (+/- 180 meters Scaled)
 HV1519
 HV1519_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ607044(NAD 83)
 HV1519
 HV1519                          SUPERSEDED SURVEY CONTROL
 HV1519
 HV1519  NGVD 29 (11/26/84)   51.797  (m)          169.94   (f) ADJUSTED    2 0
 HV1519
 HV1519.Superseded values are not recommended for survey control.
 HV1519
 HV1519.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1519.See file dsdata.pdf to determine how the superseded data were derived.
 HV1519
 HV1519_MARKER: DB = BENCH MARK DISK
 HV1519_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1519_STAMPING: E 18 1935
 HV1519_MARK LOGO: CGS
 HV1519_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1519+STABILITY: SURFACE MOTION
 HV1519_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV1519+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2005
 HV1519
 HV1519  HISTORY     - Date     Condition        Report By
 HV1519  HISTORY     - 1935     MONUMENTED       CGS
 HV1519  HISTORY     - 20041113 GOOD             USPSQD
 HV1519  HISTORY     - 20051215 GOOD             USPSQD
 HV1519
 HV1519                          STATION DESCRIPTION
 HV1519
 HV1519'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HV1519'4.3 MI N FROM LOTHIAN.
 HV1519'ALONG STATE HIGHWAY 2, 24 FEET SOUTHWEST OF SIDE ROAD TO THE
 HV1519'SOUTHEAST, 24 FEET SOUTHWET OF J.I. BIRDS MAIL BOX, 18 FEET
 HV1519'SOUTHEAST OF CENTER LINE OF HIGHWAY, 5 FEET NORTHEAST OF POWER
 HV1519'POLE 304803, IN FENCE CORNER.
 HV1519
 HV1519                          STATION RECOVERY (2004)
 HV1519
 HV1519'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1519'RECOVERED IN GOOD CONDITION.
 HV1519
 HV1519                          STATION RECOVERY (2005)
 HV1519
 HV1519'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV1519'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1520 ***********************************************************************
 HV1520  DESIGNATION -  E 18 RESET
 HV1520  PID         -  HV1520
 HV1520  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1520  COUNTRY     -  US
 HV1520  USGS QUAD   -  SOUTH RIVER (2016)
 HV1520
 HV1520                         *CURRENT SURVEY CONTROL
 HV1520  ______________________________________________________________________
 HV1520* NAD 83(1986) POSITION- 38 52 39.     (N) 076 36 19.     (W)   SCALED
 HV1520* NAVD 88 ORTHO HEIGHT -    51.96  (+/-2cm)      170.5   (feet) VERTCON3
 HV1520  ______________________________________________________________________
 HV1520  GEOID HEIGHT    -        -33.242 (meters)                     GEOID18
 HV1520  VERT ORDER      -  THIRD (See Below)
 HV1520
 HV1520.The horizontal coordinates were scaled from a map and have
 HV1520.an estimated accuracy of +/- 6 seconds.
 HV1520
 HV1520.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1520.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1520
 HV1520.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1520.GEOID18 height accuracy estimate available here.
 HV1520
 HV1520.The vertical order pertains to the NGVD 29 superseded value.
 HV1520
 HV1520.Click photographs - Photos may exist for this station.
 HV1520
 HV1520;                    North         East    Units  Estimated Accuracy
 HV1520;SPC MD       -   134,480.      434,250.      MT  (+/- 180 meters Scaled)
 HV1520
 HV1520_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ607044(NAD 83)
 HV1520
 HV1520                          SUPERSEDED SURVEY CONTROL
 HV1520
 HV1520  NGVD 29 (??/??/??)   52.20   (m)          171.3    (f) RESET       3  
 HV1520
 HV1520.Superseded values are not recommended for survey control.
 HV1520
 HV1520.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1520.See file dsdata.pdf to determine how the superseded data were derived.
 HV1520
 HV1520_MARKER: DB = BENCH MARK DISK
 HV1520_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1520_SP_SET: FENCE
 HV1520_MARK LOGO: MDSRC
 HV1520_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1520
 HV1520  HISTORY     - Date     Condition        Report By
 HV1520  HISTORY     - 1950     MONUMENTED       MDSRC
 HV1520  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV1520  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV1520
 HV1520                          STATION DESCRIPTION
 HV1520
 HV1520'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1520'4.3 MI N FROM LOTHIAN.
 HV1520'4.3 MILES NORTH ALONG STATE HIGHWAY 2 FROM THE POST OFFICE
 HV1520'AT LOTHIAN, 105 FEET SOUTHEAST OF POWER-LINE POLE 304803, AT
 HV1520'THE JUNCTION OF A ROAD LEADING SOUTHEAST, 143 FEET SOUTHEAST
 HV1520'ALONG THIS ROAD FROM THE CENTER OF THE JUNCTION, 10 FEET SOUTH
 HV1520'OF THE CENTERLINE OF THE ROAD, AND AT A FENCE.  NOTE-- THIS
 HV1520'MARK WAS ESTABLISHED AND ITS ELEVATION DETERMINED BY ENGINEERS
 HV1520'OF THE STATE ROADS COMMISSION IN AUGUST 1950.  NOTE-- CONSTRUCTION
 HV1520'IS IN THE AREA HAS CHANGED THE REFERENCE POINTS AND IT IS
 HV1520'BELIEVED THE MARK IS EITHER COVERED OR DESTROYED.
 HV1520
 HV1520                          STATION RECOVERY (2003)
 HV1520
 HV1520'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV1520'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2168 ***********************************************************************
 HU2168  DESIGNATION -  E 180
 HU2168  PID         -  HU2168
 HU2168  STATE/COUNTY-  MD/WICOMICO
 HU2168  COUNTRY     -  US
 HU2168  USGS QUAD   -  WETIPQUIN (2016)
 HU2168
 HU2168                         *CURRENT SURVEY CONTROL
 HU2168  ______________________________________________________________________
 HU2168* NAD 83(1986) POSITION- 38 22 17.3    (N) 075 45 08.2    (W)   HD_HELD2
 HU2168* NAVD 88 ORTHO HEIGHT -     3.546 (meters)       11.63  (feet) ADJUSTED
 HU2168  ______________________________________________________________________
 HU2168  GEOID HEIGHT    -        -35.697 (meters)                     GEOID18
 HU2168  DYNAMIC HEIGHT  -          3.543 (meters)       11.62  (feet) COMP
 HU2168  MODELED GRAVITY -    980,006.9   (mgal)                       NAVD 88
 HU2168
 HU2168  VERT ORDER      -  SECOND    CLASS I
 HU2168
 HU2168.The horizontal coordinates were established by autonomous hand held GPS
 HU2168.observations and have an estimated accuracy of +/- 10 meters.
 HU2168
 HU2168.The orthometric height was determined by differential leveling and
 HU2168.adjusted by the NATIONAL GEODETIC SURVEY
 HU2168.in June 1991.
 HU2168
 HU2168.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2168.GEOID18 height accuracy estimate available here.
 HU2168
 HU2168.Click photographs - Photos may exist for this station.
 HU2168
 HU2168.The dynamic height is computed by dividing the NAVD 88
 HU2168.geopotential number by the normal gravity value computed on the
 HU2168.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2168.degrees latitude (g = 980.6199 gals.).
 HU2168
 HU2168.The modeled gravity was interpolated from observed gravity values.
 HU2168
 HU2168;                    North         East    Units  Estimated Accuracy
 HU2168;SPC MD       -    78,982.      509,031.      MT  (+/- 10 meters HH2 GPS)
 HU2168
 HU2168_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3428647299(NAD 83)
 HU2168
 HU2168                          SUPERSEDED SURVEY CONTROL
 HU2168
 HU2168  NGVD 29 (06/12/91)    3.796  (m)           12.45   (f) ADJUSTED    2 1
 HU2168
 HU2168.Superseded values are not recommended for survey control.
 HU2168
 HU2168.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2168.See file dsdata.pdf to determine how the superseded data were derived.
 HU2168
 HU2168_MARKER: F = FLANGE-ENCASED ROD
 HU2168_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2168_STAMPING: E 180 1990
 HU2168_MARK LOGO: NGS
 HU2168_PROJECTION: RECESSED 15 CENTIMETERS
 HU2168_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2168_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2168_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2168+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2168_ROD/PIPE-DEPTH: 15.9 meters
 HU2168_SLEEVE-DEPTH  : 0.9 meters
 HU2168
 HU2168  HISTORY     - Date     Condition        Report By
 HU2168  HISTORY     - 1990     MONUMENTED       NGS
 HU2168  HISTORY     - 20010827 GOOD             MDSHA
 HU2168  HISTORY     - 20190423 GOOD             PROFLN
 HU2168
 HU2168                          STATION DESCRIPTION
 HU2168
 HU2168'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2168'0.9 KM (0.56 MI) NORTHWESTERLY ALONG CHERRY WALK ROAD FROM THE
 HU2168'JUNCTION OF STATE HIGHWAY 347 IN QUANTICO, 19.5 M (63.98 FT) NORTH OF
 HU2168'THE NORTHWEST CORNER OF A HOUSE, 8.5 M (27.89 FT) SOUTH OF AND LEVEL
 HU2168'WITH THE ROAD CENTER, AND 6.7 M (21.98 FT) EAST OF THE CENTER OF A
 HU2168'DRIVEWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO
 HU2168'CAP.  THE MONUMENT IS ON PROPERTY OWNED BY WAYNE CHURCH, P.O. BOX
 HU2168'56, QUANTICO, MD 21856, TELEPHONE NUMBER (301) 742-6371.
 HU2168
 HU2168                          STATION RECOVERY (2001)
 HU2168
 HU2168'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (MRA)
 HU2168'RECOVERED AS DESCRIBED.
 HU2168
 HU2168                          STATION RECOVERY (2019)
 HU2168
 HU2168'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2168'THE MARK IS 71 FT (21.6 M) NORTHEAST OF POLE 712-103, 63 FT (19.2 M)
 HU2168'NORTHWEST OF THE NORTHWEST LINE OF HOUSE 6400 (1-STORY VINYL SIDING)
 HU2168'AT THE PORCH, 57 FT (17.4 M) NORTHWEST OF THE MOST NORTHWEST LINE OF
 HU2168'THE HOUSE, 23 FT (7.0 M) NORTHEAST OF THE GRAVEL DRIVEWAY, 12 FT (3.7
 HU2168'M) EASTERLY FROM THE NORTHEAST END OF A 15 INCH RCP AND 6 FT (1.8 M)
 HU2168'SOUTHEAST OF A DITCH.  THE LOGO CAP IS FLUSH, DATUM POINT RECESSED 0.5
 HU2168'FT (15 CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2461 ***********************************************************************
 HU2461  DESIGNATION -  E 181
 HU2461  PID         -  HU2461
 HU2461  STATE/COUNTY-  MD/WICOMICO
 HU2461  COUNTRY     -  US
 HU2461  USGS QUAD   -  PITTSVILLE (2016)
 HU2461
 HU2461                         *CURRENT SURVEY CONTROL
 HU2461  ______________________________________________________________________
 HU2461* NAD 83(1986) POSITION- 38 23 23.     (N) 075 24 09.     (W)   SCALED
 HU2461* NAVD 88 ORTHO HEIGHT -    14.154 (meters)       46.44  (feet) ADJUSTED
 HU2461  ______________________________________________________________________
 HU2461  GEOID HEIGHT    -        -35.900 (meters)                     GEOID18
 HU2461  DYNAMIC HEIGHT  -         14.146 (meters)       46.41  (feet) COMP
 HU2461  MODELED GRAVITY -    980,007.7   (mgal)                       NAVD 88
 HU2461
 HU2461  VERT ORDER      -  SECOND    CLASS I
 HU2461
 HU2461.The horizontal coordinates were scaled from a map and have
 HU2461.an estimated accuracy of +/- 6 seconds.
 HU2461
 HU2461.The orthometric height was determined by differential leveling and
 HU2461.adjusted by the NATIONAL GEODETIC SURVEY
 HU2461.in June 1991.
 HU2461
 HU2461.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2461.GEOID18 height accuracy estimate available here.
 HU2461
 HU2461.Click photographs - Photos may exist for this station.
 HU2461
 HU2461.The dynamic height is computed by dividing the NAVD 88
 HU2461.geopotential number by the normal gravity value computed on the
 HU2461.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2461.degrees latitude (g = 980.6199 gals.).
 HU2461
 HU2461.The modeled gravity was interpolated from observed gravity values.
 HU2461
 HU2461;                    North         East    Units  Estimated Accuracy
 HU2461;SPC MD       -    81,480.      539,560.      MT  (+/- 180 meters Scaled)
 HU2461
 HU2461_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH648491(NAD 83)
 HU2461
 HU2461                          SUPERSEDED SURVEY CONTROL
 HU2461
 HU2461  NGVD 29 (06/12/91)   14.399  (m)           47.24   (f) ADJUSTED    2 1
 HU2461
 HU2461.Superseded values are not recommended for survey control.
 HU2461
 HU2461.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2461.See file dsdata.pdf to determine how the superseded data were derived.
 HU2461
 HU2461_MARKER: I = METAL ROD
 HU2461_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2461_STAMPING: E 181 1990
 HU2461_MARK LOGO: NGS
 HU2461_PROJECTION: RECESSED 3 CENTIMETERS
 HU2461_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2461_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2461_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2461+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2461_ROD/PIPE-DEPTH: 30.3 meters
 HU2461_SLEEVE-DEPTH  : 0.9 meters
 HU2461
 HU2461  HISTORY     - Date     Condition        Report By
 HU2461  HISTORY     - 1990     MONUMENTED       NGS
 HU2461  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU2461
 HU2461                          STATION DESCRIPTION
 HU2461
 HU2461'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990 (RHK)
 HU2461'1.3 KM (0.81 MI) EASTERLY ALONG STATE HIGHWAY 346 FROM THE JUNCTION OF
 HU2461'STATE HIGHWAY 353 IN PITTSVILLE, 27.8 M (91.21 FT) EAST OF UTILITY
 HU2461'POLE NUMBER 329 WITH A GUY WIRE, 10.6 M (34.78 FT) WEST OF THE CENTER
 HU2461'OF A FIELD ENTRANCE, 7.8 M (25.59 FT) NORTH OF AND LEVEL WITH THE
 HU2461'HIGHWAY CENTERLINE, 6.8 M (22.31 FT) SOUTHWEST OF THE CENTER OF A
 HU2461'CONCRETE PAD WITH A 3-INCH PIPE PROJECTING 6-INCHES FROM ITS CENTER.
 HU2461'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2461
 HU2461                          STATION RECOVERY (2003)
 HU2461
 HU2461'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU2461'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2375 ***********************************************************************
 HU2375  DESIGNATION -  E 182
 HU2375  PID         -  HU2375
 HU2375  STATE/COUNTY-  MD/WICOMICO
 HU2375  COUNTRY     -  US
 HU2375  USGS QUAD   -  SALISBURY (2016)
 HU2375
 HU2375                         *CURRENT SURVEY CONTROL
 HU2375  ______________________________________________________________________
 HU2375* NAD 83(1986) POSITION- 38 17 15.     (N) 075 34 06.     (W)   SCALED
 HU2375* NAVD 88 ORTHO HEIGHT -    14.676 (meters)       48.15  (feet) ADJUSTED
 HU2375  ______________________________________________________________________
 HU2375  GEOID HEIGHT    -        -35.969 (meters)                     GEOID18
 HU2375  DYNAMIC HEIGHT  -         14.666 (meters)       48.12  (feet) COMP
 HU2375  MODELED GRAVITY -    979,997.1   (mgal)                       NAVD 88
 HU2375
 HU2375  VERT ORDER      -  SECOND    CLASS I
 HU2375
 HU2375.The horizontal coordinates were scaled from a map and have
 HU2375.an estimated accuracy of +/- 6 seconds.
 HU2375
 HU2375.The orthometric height was determined by differential leveling and
 HU2375.adjusted by the NATIONAL GEODETIC SURVEY
 HU2375.in June 1991.
 HU2375
 HU2375.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2375.GEOID18 height accuracy estimate available here.
 HU2375
 HU2375.Click photographs - Photos may exist for this station.
 HU2375
 HU2375.The dynamic height is computed by dividing the NAVD 88
 HU2375.geopotential number by the normal gravity value computed on the
 HU2375.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2375.degrees latitude (g = 980.6199 gals.).
 HU2375
 HU2375.The modeled gravity was interpolated from observed gravity values.
 HU2375
 HU2375;                    North         East    Units  Estimated Accuracy
 HU2375;SPC MD       -    69,900.      525,250.      MT  (+/- 180 meters Scaled)
 HU2375
 HU2375_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH502378(NAD 83)
 HU2375
 HU2375                          SUPERSEDED SURVEY CONTROL
 HU2375
 HU2375  NGVD 29 (06/12/91)   14.929  (m)           48.98   (f) ADJUSTED    2 1
 HU2375
 HU2375.Superseded values are not recommended for survey control.
 HU2375
 HU2375.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2375.See file dsdata.pdf to determine how the superseded data were derived.
 HU2375
 HU2375_MARKER: I = METAL ROD
 HU2375_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2375_STAMPING: E 182 1989
 HU2375_MARK LOGO: NGS
 HU2375_PROJECTION: FLUSH
 HU2375_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2375_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2375_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2375+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HU2375_ROD/PIPE-DEPTH: 23.8 meters
 HU2375_SLEEVE-DEPTH  : 0.9 meters
 HU2375
 HU2375  HISTORY     - Date     Condition        Report By
 HU2375  HISTORY     - 1989     MONUMENTED       NGS
 HU2375
 HU2375                          STATION DESCRIPTION
 HU2375
 HU2375'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU2375'2.9 KM (1.80 MI) NORTHEASTERLY ALONG DIVISION STREET FROM THE JUNCTION
 HU2375'OF U.S. HIGHWAY 13 IN FRUITLAND, THENCE 6.1 KM (3.79 MI)
 HU2375'SOUTHEASTERLY ALONG ST LUKE ROAD, THENCE 0.9 KM (0.56 MI) NORTHERLY
 HU2375'ALONG POCOMOKE ROAD, 27.6 M (90.55 FT) SOUTHWEST OF THE SOUTHWEST
 HU2375'CORNER OF THE TRIBECK RESIDENCE, 8.7 M (28.54 FT) EAST OF THE CENTER
 HU2375'OF THE ROAD, 7.6 M (24.93 FT) SOUTH OF THE CENTER OF A DRIVEWAY, 6.3
 HU2375'M (20.67 FT) NORTHEAST OF UTILITY POLE NUMBER 731-115-40-37, AND
 HU2375'LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2375'5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY MR. CHARLES
 HU2375'TRIBECK, RT 1 BOX 868, SALISBURY, MD 21801, TELEPHONE NUMBER (301)
 HU2375'742-6239.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2342 ***********************************************************************
 HU2342  DESIGNATION -  E 183
 HU2342  PID         -  HU2342
 HU2342  STATE/COUNTY-  MD/WICOMICO
 HU2342  COUNTRY     -  US
 HU2342  USGS QUAD   -  DELMAR (2016)
 HU2342
 HU2342                         *CURRENT SURVEY CONTROL
 HU2342  ______________________________________________________________________
 HU2342* NAD 83(1986) POSITION- 38 26 10.01   (N) 075 33 45.88   (W)   HD_HELD1
 HU2342* NAVD 88 ORTHO HEIGHT -    14.732 (meters)       48.33  (feet) ADJUSTED
 HU2342  ______________________________________________________________________
 HU2342  GEOID HEIGHT    -        -35.757 (meters)                     GEOID18
 HU2342  DYNAMIC HEIGHT  -         14.723 (meters)       48.30  (feet) COMP
 HU2342  MODELED GRAVITY -    980,011.4   (mgal)                       NAVD 88
 HU2342
 HU2342  VERT ORDER      -  SECOND    CLASS I
 HU2342
 HU2342.The horizontal coordinates were determined by differentially corrected
 HU2342.hand held GPS observations or other comparable positioning techniques
 HU2342.and have an estimated accuracy of +/- 3 meters.
 HU2342
 HU2342.The orthometric height was determined by differential leveling and
 HU2342.adjusted by the NATIONAL GEODETIC SURVEY
 HU2342.in June 1991.
 HU2342
 HU2342.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2342.GEOID18 height accuracy estimate available here.
 HU2342
 HU2342.Click photographs - Photos may exist for this station.
 HU2342
 HU2342.The dynamic height is computed by dividing the NAVD 88
 HU2342.geopotential number by the normal gravity value computed on the
 HU2342.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2342.degrees latitude (g = 980.6199 gals.).
 HU2342
 HU2342.The modeled gravity was interpolated from observed gravity values.
 HU2342
 HU2342;                    North         East    Units  Estimated Accuracy
 HU2342;SPC MD       -    86,399.6     525,478.6     MT  (+/- 3 meters HH1 GPS) 
 HU2342
 HU2342_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5088654354(NAD 83)
 HU2342
 HU2342                          SUPERSEDED SURVEY CONTROL
 HU2342
 HU2342  NGVD 29 (06/12/91)   14.986  (m)           49.17   (f) ADJUSTED    2 1
 HU2342
 HU2342.Superseded values are not recommended for survey control.
 HU2342
 HU2342.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2342.See file dsdata.pdf to determine how the superseded data were derived.
 HU2342
 HU2342_MARKER: F = FLANGE-ENCASED ROD
 HU2342_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2342_STAMPING: E 183 1990
 HU2342_MARK LOGO: NGS
 HU2342_PROJECTION: FLUSH
 HU2342_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2342_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2342_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2342+SATELLITE: SATELLITE OBSERVATIONS - June 25, 2009
 HU2342_ROD/PIPE-DEPTH: 21.9 meters
 HU2342_SLEEVE-DEPTH  : 0.9 meters
 HU2342
 HU2342  HISTORY     - Date     Condition        Report By
 HU2342  HISTORY     - 1990     MONUMENTED       NGS
 HU2342  HISTORY     - 19990719 GOOD             MDSHA
 HU2342  HISTORY     - 20090625 GOOD             MDSHA
 HU2342
 HU2342                          STATION DESCRIPTION
 HU2342
 HU2342'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2342'2.2 KM (1.37 MI) SOUTHERLY ALONG U.S. HIGHWAY 13 FROM ITS JUNCTION
 HU2342'WITH STATE HIGHWAY 54 IN DELMAR, 28.6 M (93.83 FT) NORTH OF THE
 HU2342'EXTENDED CENTER OF STAGE ROAD, 16.4 M (53.81 FT) NORTH OF THE NORTH
 HU2342'EDGE OF A STORM DRAIN GRATE, 8.9 M (29.20 FT) WEST OF THE CENTERLINE
 HU2342'OF THE NORTHBOUND LANES OF THE HIGHWAY, 1.8 M (5.91 FT) SOUTH OF A
 HU2342'WITNESS POST, AND 0.2 M (0.66 FT) BELOW THE LEVEL OF THE HIGHWAY.
 HU2342'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2342
 HU2342                          STATION RECOVERY (1999)
 HU2342
 HU2342'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HU2342'RECOVERED AS DESCRIBED.
 HU2342
 HU2342                          STATION RECOVERY (2009)
 HU2342
 HU2342'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (MW)
 HU2342'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2290 ***********************************************************************
 HU2290  DESIGNATION -  E 184
 HU2290  PID         -  HU2290
 HU2290  STATE/COUNTY-  MD/WICOMICO
 HU2290  COUNTRY     -  US
 HU2290  USGS QUAD   -  EDEN (2016)
 HU2290
 HU2290                         *CURRENT SURVEY CONTROL
 HU2290  ______________________________________________________________________
 HU2290* NAD 83(1986) POSITION- 38 20 59.     (N) 075 41 22.     (W)   SCALED
 HU2290* NAVD 88 ORTHO HEIGHT -     7.208 (meters)       23.65  (feet) ADJUSTED
 HU2290  ______________________________________________________________________
 HU2290  GEOID HEIGHT    -        -35.781 (meters)                     GEOID18
 HU2290  DYNAMIC HEIGHT  -          7.203 (meters)       23.63  (feet) COMP
 HU2290  MODELED GRAVITY -    980,004.1   (mgal)                       NAVD 88
 HU2290
 HU2290  VERT ORDER      -  SECOND    CLASS I
 HU2290
 HU2290.The horizontal coordinates were scaled from a map and have
 HU2290.an estimated accuracy of +/- 6 seconds.
 HU2290
 HU2290.The orthometric height was determined by differential leveling and
 HU2290.adjusted by the NATIONAL GEODETIC SURVEY
 HU2290.in June 1991.
 HU2290
 HU2290.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2290.GEOID18 height accuracy estimate available here.
 HU2290
 HU2290.Click photographs - Photos may exist for this station.
 HU2290
 HU2290.The dynamic height is computed by dividing the NAVD 88
 HU2290.geopotential number by the normal gravity value computed on the
 HU2290.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2290.degrees latitude (g = 980.6199 gals.).
 HU2290
 HU2290.The modeled gravity was interpolated from observed gravity values.
 HU2290
 HU2290;                    North         East    Units  Estimated Accuracy
 HU2290;SPC MD       -    76,640.      514,560.      MT  (+/- 180 meters Scaled)
 HU2290
 HU2290_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH397448(NAD 83)
 HU2290
 HU2290                          SUPERSEDED SURVEY CONTROL
 HU2290
 HU2290  NGVD 29 (06/12/91)    7.460  (m)           24.48   (f) ADJUSTED    2 1
 HU2290
 HU2290.Superseded values are not recommended for survey control.
 HU2290
 HU2290.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2290.See file dsdata.pdf to determine how the superseded data were derived.
 HU2290
 HU2290_MARKER: I = METAL ROD
 HU2290_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2290_STAMPING: E 184 1990
 HU2290_MARK LOGO: NGS
 HU2290_PROJECTION: FLUSH
 HU2290_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2290_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2290_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2290+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2290_ROD/PIPE-DEPTH: 17.0 meters
 HU2290_SLEEVE-DEPTH  : 0.9 meters
 HU2290
 HU2290  HISTORY     - Date     Condition        Report By
 HU2290  HISTORY     - 1990     MONUMENTED       NGS
 HU2290
 HU2290                          STATION DESCRIPTION
 HU2290
 HU2290'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2290'7.4 KM (4.60 MI) SOUTHEASTERLY ALONG PEMBERTON DRIVE FROM THE
 HU2290'JUNCTION OF ELLEGOOD STREET IN SALISBURY, 17.7 M (58.07 FT) NORTHEAST
 HU2290'OF UTILITY POLE NUMBER 44269 92594, 8.3 M (27.23 FT) NORTHWEST OF THE
 HU2290'CENTER OF THE DRIVE, 4.6 M (15.09 FT) NORTHEAST OF THE CENTER OF A
 HU2290'DRIVEWAY, 0.4 M (1.31 FT) SOUTHEAST OF A WITNESS POST AND FENCE, AND
 HU2290'LEVEL WITH THE DRIVE.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2290'5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2227 ***********************************************************************
 HU2227  DESIGNATION -  E 185
 HU2227  PID         -  HU2227
 HU2227  STATE/COUNTY-  MD/WICOMICO
 HU2227  COUNTRY     -  US
 HU2227  USGS QUAD   -  HEBRON (2016)
 HU2227
 HU2227                         *CURRENT SURVEY CONTROL
 HU2227  ______________________________________________________________________
 HU2227* NAD 83(1986) POSITION- 38 23 40.1    (N) 075 43 08.2    (W)   HD_HELD2
 HU2227* NAVD 88 ORTHO HEIGHT -     7.506 (meters)       24.63  (feet) ADJUSTED
 HU2227  ______________________________________________________________________
 HU2227  GEOID HEIGHT    -        -35.687 (meters)                     GEOID18
 HU2227  DYNAMIC HEIGHT  -          7.501 (meters)       24.61  (feet) COMP
 HU2227  MODELED GRAVITY -    980,009.6   (mgal)                       NAVD 88
 HU2227
 HU2227  VERT ORDER      -  SECOND    CLASS I
 HU2227
 HU2227.The horizontal coordinates were established by autonomous hand held GPS
 HU2227.observations and have an estimated accuracy of +/- 10 meters.
 HU2227
 HU2227.The orthometric height was determined by differential leveling and
 HU2227.adjusted by the NATIONAL GEODETIC SURVEY
 HU2227.in June 1991.
 HU2227
 HU2227.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2227.GEOID18 height accuracy estimate available here.
 HU2227
 HU2227.Click photographs - Photos may exist for this station.
 HU2227
 HU2227.The dynamic height is computed by dividing the NAVD 88
 HU2227.geopotential number by the normal gravity value computed on the
 HU2227.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2227.degrees latitude (g = 980.6199 gals.).
 HU2227
 HU2227.The modeled gravity was interpolated from observed gravity values.
 HU2227
 HU2227;                    North         East    Units  Estimated Accuracy
 HU2227;SPC MD       -    81,575.      511,908.      MT  (+/- 10 meters HH2 GPS)
 HU2227
 HU2227_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3721749828(NAD 83)
 HU2227
 HU2227                          SUPERSEDED SURVEY CONTROL
 HU2227
 HU2227  NGVD 29 (06/12/91)    7.754  (m)           25.44   (f) ADJUSTED    2 1
 HU2227
 HU2227.Superseded values are not recommended for survey control.
 HU2227
 HU2227.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2227.See file dsdata.pdf to determine how the superseded data were derived.
 HU2227
 HU2227_MARKER: F = FLANGE-ENCASED ROD
 HU2227_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2227_STAMPING: E 185 1990
 HU2227_MARK LOGO: NGS
 HU2227_PROJECTION: RECESSED 5 CENTIMETERS
 HU2227_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2227_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2227_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2227+SATELLITE: SATELLITE OBSERVATIONS - September 06, 2018
 HU2227_ROD/PIPE-DEPTH: 19.4 meters
 HU2227_SLEEVE-DEPTH  : 0.9 meters
 HU2227
 HU2227  HISTORY     - Date     Condition        Report By
 HU2227  HISTORY     - 1990     MONUMENTED       NGS
 HU2227  HISTORY     - 20040719 GOOD             GEOCAC
 HU2227  HISTORY     - 20180906 SEE DESCRIPTION  PROFLN
 HU2227
 HU2227                          STATION DESCRIPTION
 HU2227
 HU2227'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2227'3.8 KM (2.36 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU2227'ROAD) FROM THE JUNCTION OF RAILROAD AVENUE IN HEBRON, 0.2 KM (0.12
 HU2227'MI) SOUTHWEST OF A HIGHLINE CROSSING, 89.4 M (293.31 FT) NORTHEAST OF
 HU2227'THE CENTER OF A FIELD ENTRANCE, 7.5 M (24.61 FT) SOUTHEAST OF THE
 HU2227'CENTERLINE OF THE HIGHWAY, 1.5 M (4.92 FT) NORTHEAST OF UTILITY POLE
 HU2227'NUMBER 43430 94225, 0.5 M (1.64 FT) NORTHWEST OF A WITNESS POST, AND
 HU2227'0.2 M (0.66 FT) BELOW THE LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO THE
 HU2227'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2227
 HU2227                          STATION RECOVERY (2004)
 HU2227
 HU2227'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2227'RECOVERED IN GOOD CONDITION.
 HU2227
 HU2227                          STATION RECOVERY (2018)
 HU2227
 HU2227'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2018 (JRO)
 HU2227'THE MARK IS 1.5 FT (0.5 M) NORTHEAST OF A POLE WITH THE SAME NUMBERS,
 HU2227'1.5 FT (0.5 M) BELOW THE HIGHWAY AND FLUSH WITH THE GROUND.  THE ROD
 HU2227'IS UP TO THE CAP OR CAP DOWN TO THE ROD SUCH THAT THE CAP CANNOT CLOSE
 HU2227'FULLY.  THE STAMPING IS CORRODED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2138 ***********************************************************************
 HU2138  DESIGNATION -  E 186
 HU2138  PID         -  HU2138
 HU2138  STATE/COUNTY-  MD/WICOMICO
 HU2138  COUNTRY     -  US
 HU2138  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2138
 HU2138                         *CURRENT SURVEY CONTROL
 HU2138  ______________________________________________________________________
 HU2138* NAD 83(1986) POSITION- 38 29 20.9    (N) 075 46 06.2    (W)   HD_HELD2
 HU2138* NAVD 88 ORTHO HEIGHT -     5.011 (meters)       16.44  (feet) ADJUSTED
 HU2138  ______________________________________________________________________
 HU2138  GEOID HEIGHT    -        -35.545 (meters)                     GEOID18
 HU2138  DYNAMIC HEIGHT  -          5.008 (meters)       16.43  (feet) COMP
 HU2138  MODELED GRAVITY -    980,015.7   (mgal)                       NAVD 88
 HU2138
 HU2138  VERT ORDER      -  SECOND    CLASS I
 HU2138
 HU2138.The horizontal coordinates were established by autonomous hand held GPS
 HU2138.observations and have an estimated accuracy of +/- 10 meters.
 HU2138
 HU2138.The orthometric height was determined by differential leveling and
 HU2138.adjusted by the NATIONAL GEODETIC SURVEY
 HU2138.in June 1991.
 HU2138
 HU2138.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2138.GEOID18 height accuracy estimate available here.
 HU2138
 HU2138.Click photographs - Photos may exist for this station.
 HU2138
 HU2138.The dynamic height is computed by dividing the NAVD 88
 HU2138.geopotential number by the normal gravity value computed on the
 HU2138.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2138.degrees latitude (g = 980.6199 gals.).
 HU2138
 HU2138.The modeled gravity was interpolated from observed gravity values.
 HU2138
 HU2138;                    North         East    Units  Estimated Accuracy
 HU2138;SPC MD       -    92,023.      507,447.      MT  (+/- 10 meters HH2 GPS)
 HU2138
 HU2138_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3298760367(NAD 83)
 HU2138
 HU2138                          SUPERSEDED SURVEY CONTROL
 HU2138
 HU2138  NGVD 29 (06/12/91)    5.256  (m)           17.24   (f) ADJUSTED    2 1
 HU2138
 HU2138.Superseded values are not recommended for survey control.
 HU2138
 HU2138.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2138.See file dsdata.pdf to determine how the superseded data were derived.
 HU2138
 HU2138_MARKER: F = FLANGE-ENCASED ROD
 HU2138_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2138_STAMPING: E 186 1990
 HU2138_MARK LOGO: NGS
 HU2138_PROJECTION: RECESSED 2 CENTIMETERS
 HU2138_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2138_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2138+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2017
 HU2138_ROD/PIPE-DEPTH: 21.8 meters
 HU2138_SLEEVE-DEPTH  : 0.9 meters
 HU2138
 HU2138  HISTORY     - Date     Condition        Report By
 HU2138  HISTORY     - 1990     MONUMENTED       NGS
 HU2138  HISTORY     - 20170329 GOOD             PROFLN
 HU2138
 HU2138                          STATION DESCRIPTION
 HU2138
 HU2138'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2138'2.9 KM (1.80 MI) NORTHERLY ALONG STATE HIGHWAY 460 FROM THE JUNCTION
 HU2138'OF U.S. HIGHWAY 50 IN MARDELA SPRINGS, 18.7 M (61.35 FT) SOUTH OF
 HU2138'UTILITY POLE NUMBER 42048 97694, 13.2 M (43.31 FT) NORTHWEST OF THE
 HU2138'NORTHWEST CORNER OF A HOUSE, 11.0 M (36.09 FT) SOUTH OF THE CENTER OF
 HU2138'A DRIVEWAY, 7.2 M (23.62 FT) NORTH OF THE NORTHEAST CORNER OF A STORM
 HU2138'DRAIN, 6.2 M (20.34 FT) EAST OF THE CENTER OF THE HIGHWAY, AND LEVEL
 HU2138'WITH THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2138'5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY MR. G. R.
 HU2138'DAWSON, RT 1 BOX 97, MARDELA SPRINGS, MD 21837, TELEPHONE NUMBER
 HU2138'(301)742-7762.
 HU2138
 HU2138                          STATION RECOVERY (2017)
 HU2138
 HU2138'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2138'RECOVERED IN GOOD CONDITION.  ADDITIONAL TIES ARE 43.5 FT (13.3 M)
 HU2138'NORTHWEST OF THE 1-STORY BRICK NORTHWEST HOUSE CORNER, 40.5 FT (12.3
 HU2138'M) OF MAILBOX 10711, 37.5 FT (11.4 M) WEST OF THE WESTERLY (FRONT)
 HU2138'LINE OF THE HOUSE EXTENDED, 36 FT (11.0 M) SOUTH OF A DRIVEWAY, 24.0
 HU2138'FT (7.3 M) NORTH OF THE NORTH END OF A 18 INCH RCP AT A STORM DRAIN,
 HU2138'21.5 FT (6.6 M) NORTH OF THE NORTH LINE OF THE HOUSE EXTENDED, ABOUT
 HU2138'UNDER THE SOUTH DRIP LINE OF A MULTI-TRUNK HOLLY.  THE LOGO CAP IS 0.2
 HU2138'FT (6 CM) BELOW GROUND, MARK 0.4 FT (12 CM) BELOW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2256 ***********************************************************************
 HU2256  DESIGNATION -  E 187
 HU2256  PID         -  HU2256
 HU2256  STATE/COUNTY-  MD/WICOMICO
 HU2256  COUNTRY     -  US
 HU2256  USGS QUAD   -  WETIPQUIN (2016)
 HU2256
 HU2256                         *CURRENT SURVEY CONTROL
 HU2256  ______________________________________________________________________
 HU2256* NAD 83(1986) POSITION- 38 20 07.2    (N) 075 51 35.4    (W)   HD_HELD2
 HU2256* NAVD 88 ORTHO HEIGHT -     4.485 (meters)       14.71  (feet) ADJUSTED
 HU2256  ______________________________________________________________________
 HU2256  GEOID HEIGHT    -        -35.673 (meters)                     GEOID18
 HU2256  DYNAMIC HEIGHT  -          4.482 (meters)       14.70  (feet) COMP
 HU2256  MODELED GRAVITY -    979,999.6   (mgal)                       NAVD 88
 HU2256
 HU2256  VERT ORDER      -  SECOND    CLASS I
 HU2256
 HU2256.The horizontal coordinates were established by autonomous hand held GPS
 HU2256.observations and have an estimated accuracy of +/- 10 meters.
 HU2256
 HU2256.The orthometric height was determined by differential leveling and
 HU2256.adjusted by the NATIONAL GEODETIC SURVEY
 HU2256.in June 1991.
 HU2256
 HU2256.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2256.GEOID18 height accuracy estimate available here.
 HU2256
 HU2256.Click photographs - Photos may exist for this station.
 HU2256
 HU2256.The dynamic height is computed by dividing the NAVD 88
 HU2256.geopotential number by the normal gravity value computed on the
 HU2256.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2256.degrees latitude (g = 980.6199 gals.).
 HU2256
 HU2256.The modeled gravity was interpolated from observed gravity values.
 HU2256
 HU2256;                    North         East    Units  Estimated Accuracy
 HU2256;SPC MD       -    74,847.      499,683.      MT  (+/- 10 meters HH2 GPS)
 HU2256
 HU2256_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2485343371(NAD 83)
 HU2256
 HU2256                          SUPERSEDED SURVEY CONTROL
 HU2256
 HU2256  NGVD 29 (06/12/91)    4.739  (m)           15.55   (f) ADJUSTED    2 1
 HU2256
 HU2256.Superseded values are not recommended for survey control.
 HU2256
 HU2256.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2256.See file dsdata.pdf to determine how the superseded data were derived.
 HU2256
 HU2256_MARKER: F = FLANGE-ENCASED ROD
 HU2256_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2256_STAMPING: E 187 1990
 HU2256_MARK LOGO: NGS
 HU2256_PROJECTION: RECESSED 5 CENTIMETERS
 HU2256_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2256_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2256_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2256+SATELLITE: SATELLITE OBSERVATIONS - May 15, 2019
 HU2256_ROD/PIPE-DEPTH: 14.5 meters
 HU2256_SLEEVE-DEPTH  : 0.9 meters
 HU2256
 HU2256  HISTORY     - Date     Condition        Report By
 HU2256  HISTORY     - 1990     MONUMENTED       NGS
 HU2256  HISTORY     - 20190515 GOOD             PROFLN
 HU2256
 HU2256                          STATION DESCRIPTION
 HU2256
 HU2256'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2256'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2256'OFFICE IN QUANTICO, THENCE 7.8 KM (4.85 MI) WESTERLY ALONG STATE
 HU2256'HIGHWAY 349, THENCE 4.8 KM (2.98 MI) WESTERLY ALONG STATE HIGHWAY
 HU2256'478, 40.4 M (132.55 FT) EAST OF THE EAST CORNER OF A HOUSE, 24.9 M
 HU2256'(81.69 FT) SOUTHWEST OF A UTILITY POLE, 10.5 M (34.45 FT) NORTHWEST
 HU2256'OF THE HIGHWAY CENTER, AND 9.6 M (31.50 FT) SOUTHWEST OF THE CENTER
 HU2256'OF A DRIVEWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 HU2256'LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY WARE HULL, RT 1 BOX
 HU2256'133, QUANTICO, MD 21856, TELEPHONE NUMBER (301) 873-2054.
 HU2256
 HU2256                          STATION RECOVERY (2019)
 HU2256
 HU2256'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2256'THE MARK IS 82 FT (25.0 M) SOUTHWEST OF POLE 712 59 162 14, 64 FT
 HU2256'(19.5 M) NORTHEAST OF THE NORTHEAST LINE EXTENDED OF HOUSE 21808
 HU2256'WETIPQUIN ROAD - 1 STORY FRAME - AT THE EASTERLY OR TOWARD-THE-ROAD
 HU2256'DRIPLINE OF A TREE.  THE LOGO CAP IS 0.1 BELOW SURROUNDING GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2405 ***********************************************************************
 HU2405  DESIGNATION -  E 188
 HU2405  PID         -  HU2405
 HU2405  STATE/COUNTY-  MD/WICOMICO
 HU2405  COUNTRY     -  US
 HU2405  USGS QUAD   -  DELMAR (2016)
 HU2405
 HU2405                         *CURRENT SURVEY CONTROL
 HU2405  ______________________________________________________________________
 HU2405* NAD 83(1986) POSITION- 38 24 26.     (N) 075 32 41.     (W)   SCALED
 HU2405* NAVD 88 ORTHO HEIGHT -    14.043 (meters)       46.07  (feet) ADJUSTED
 HU2405  ______________________________________________________________________
 HU2405  GEOID HEIGHT    -        -35.797 (meters)                     GEOID18
 HU2405  DYNAMIC HEIGHT  -         14.034 (meters)       46.04  (feet) COMP
 HU2405  MODELED GRAVITY -    980,009.1   (mgal)                       NAVD 88
 HU2405
 HU2405  VERT ORDER      -  SECOND    CLASS I
 HU2405
 HU2405.The horizontal coordinates were scaled from a map and have
 HU2405.an estimated accuracy of +/- 6 seconds.
 HU2405
 HU2405.The orthometric height was determined by differential leveling and
 HU2405.adjusted by the NATIONAL GEODETIC SURVEY
 HU2405.in June 1991.
 HU2405
 HU2405.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2405.GEOID18 height accuracy estimate available here.
 HU2405
 HU2405.Click photographs - Photos may exist for this station.
 HU2405
 HU2405.The dynamic height is computed by dividing the NAVD 88
 HU2405.geopotential number by the normal gravity value computed on the
 HU2405.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2405.degrees latitude (g = 980.6199 gals.).
 HU2405
 HU2405.The modeled gravity was interpolated from observed gravity values.
 HU2405
 HU2405;                    North         East    Units  Estimated Accuracy
 HU2405;SPC MD       -    83,220.      527,100.      MT  (+/- 180 meters Scaled)
 HU2405
 HU2405_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH524511(NAD 83)
 HU2405
 HU2405                          SUPERSEDED SURVEY CONTROL
 HU2405
 HU2405  NGVD 29 (06/12/91)   14.297  (m)           46.91   (f) ADJUSTED    2 1
 HU2405
 HU2405.Superseded values are not recommended for survey control.
 HU2405
 HU2405.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2405.See file dsdata.pdf to determine how the superseded data were derived.
 HU2405
 HU2405_MARKER: I = METAL ROD
 HU2405_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2405_STAMPING: E 188 1990
 HU2405_MARK LOGO: NGS
 HU2405_PROJECTION: RECESSED 2 CENTIMETERS
 HU2405_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2405_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2405_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2405+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2405_ROD/PIPE-DEPTH: 24.3 meters
 HU2405_SLEEVE-DEPTH  : 0.9 meters
 HU2405
 HU2405  HISTORY     - Date     Condition        Report By
 HU2405  HISTORY     - 1990     MONUMENTED       NGS
 HU2405
 HU2405                          STATION DESCRIPTION
 HU2405
 HU2405'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2405'2.8 KM (1.74 MI) EASTERLY ALONG ZION ROAD FROM THE JUNCTION OF U.S.
 HU2405'HIGHWAY 13 BUSINESS IN SALISBURY, THENCE 0.9 KM (0.56 MI) NORTHERLY
 HU2405'ALONG BROWN ROAD, 30.1 M (98.75 FT) NORTH OF UTILITY POLE NUMBER
 HU2405'48424 94648, 26.1 M (85.63 FT) NORTH OF THE CENTER OF A DRIVEWAY, 9.7
 HU2405'M (31.82 FT) EAST OF AND LEVEL WITH THE CENTERLINE OF THE ROAD, 1.7 M
 HU2405'(5.58 FT) WEST-SOUTHWEST OF A FENCE CORNER, AND 0.3 M (0.98 FT) SOUTH
 HU2405'OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2405'5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2549 ***********************************************************************
 HU2549  DESIGNATION -  E 189
 HU2549  PID         -  HU2549
 HU2549  STATE/COUNTY-  MD/WICOMICO
 HU2549  COUNTRY     -  US
 HU2549  USGS QUAD   -  PITTSVILLE (2016)
 HU2549
 HU2549                         *CURRENT SURVEY CONTROL
 HU2549  ______________________________________________________________________
 HU2549* NAD 83(1986) POSITION- 38 25 28.     (N) 075 26 30.     (W)   SCALED
 HU2549* NAVD 88 ORTHO HEIGHT -    17.909 (meters)       58.76  (feet) ADJUSTED
 HU2549  ______________________________________________________________________
 HU2549  GEOID HEIGHT    -        -35.836 (meters)                     GEOID18
 HU2549  DYNAMIC HEIGHT  -         17.897 (meters)       58.72  (feet) COMP
 HU2549  MODELED GRAVITY -    980,010.2   (mgal)                       NAVD 88
 HU2549
 HU2549  VERT ORDER      -  SECOND    CLASS I
 HU2549
 HU2549.The horizontal coordinates were scaled from a map and have
 HU2549.an estimated accuracy of +/- 6 seconds.
 HU2549
 HU2549.The orthometric height was determined by differential leveling and
 HU2549.adjusted by the NATIONAL GEODETIC SURVEY
 HU2549.in June 1991.
 HU2549
 HU2549.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2549.GEOID18 height accuracy estimate available here.
 HU2549
 HU2549.Click photographs - Photos may exist for this station.
 HU2549
 HU2549.The dynamic height is computed by dividing the NAVD 88
 HU2549.geopotential number by the normal gravity value computed on the
 HU2549.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2549.degrees latitude (g = 980.6199 gals.).
 HU2549
 HU2549.The modeled gravity was interpolated from observed gravity values.
 HU2549
 HU2549;                    North         East    Units  Estimated Accuracy
 HU2549;SPC MD       -    85,280.      536,070.      MT  (+/- 180 meters Scaled)
 HU2549
 HU2549_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH614530(NAD 83)
 HU2549
 HU2549                          SUPERSEDED SURVEY CONTROL
 HU2549
 HU2549  NGVD 29 (06/12/91)   18.156  (m)           59.57   (f) ADJUSTED    2 1
 HU2549
 HU2549.Superseded values are not recommended for survey control.
 HU2549
 HU2549.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2549.See file dsdata.pdf to determine how the superseded data were derived.
 HU2549
 HU2549_MARKER: I = METAL ROD
 HU2549_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2549_STAMPING: E 189 1990
 HU2549_MARK LOGO: NGS
 HU2549_PROJECTION: RECESSED 2 CENTIMETERS
 HU2549_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2549_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2549_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2549+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2549_ROD/PIPE-DEPTH: 18.2 meters
 HU2549_SLEEVE-DEPTH  : 0.9 meters
 HU2549
 HU2549  HISTORY     - Date     Condition        Report By
 HU2549  HISTORY     - 1990     MONUMENTED       NGS
 HU2549
 HU2549                          STATION DESCRIPTION
 HU2549
 HU2549'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2549'3.5 KM (2.17 MI) NORTHWESTERLY ALONG PITTSVILLE ROAD FROM THE JUNCTION
 HU2549'OF STATE HIGHWAY 353 (PITTSVILLE DELAWARE ROAD) IN PITTSVILLE, 7.7 M
 HU2549'(25.26 FT) NORTHWEST OF THE NORTHWEST END OF A 40-INCH PIPE CULVERT,
 HU2549'7.2 M (23.62 FT) SOUTHEAST OF THE CENTER OF A DRIVEWAY, 6.9 M
 HU2549'(22.64 FT) NORTHEAST OF THE CENTER OF THE ROAD, AND 0.3 M (0.98 FT)
 HU2549'BELOW THE LEVEL OF THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS
 HU2549'THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY MR.
 HU2549'CLIFFORD DAVIS SR., RT. 2 BOX 392, PARSONSBURG, MD 21849, TELEPHONE
 HU2549'NUMBER (301) 835-8454.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2393 ***********************************************************************
 HU2393  DESIGNATION -  E 190
 HU2393  PID         -  HU2393
 HU2393  STATE/COUNTY-  MD/WICOMICO
 HU2393  COUNTRY     -  US
 HU2393  USGS QUAD   -  WANGO (2016)
 HU2393
 HU2393                         *CURRENT SURVEY CONTROL
 HU2393  ______________________________________________________________________
 HU2393* NAD 83(1986) POSITION- 38 18 15.     (N) 075 22 41.     (W)   SCALED
 HU2393* NAVD 88 ORTHO HEIGHT -     9.845 (meters)       32.30  (feet) ADJUSTED
 HU2393  ______________________________________________________________________
 HU2393  GEOID HEIGHT    -        -36.024 (meters)                     GEOID18
 HU2393  DYNAMIC HEIGHT  -          9.839 (meters)       32.28  (feet) COMP
 HU2393  MODELED GRAVITY -    979,999.4   (mgal)                       NAVD 88
 HU2393
 HU2393  VERT ORDER      -  SECOND    CLASS I
 HU2393
 HU2393.The horizontal coordinates were scaled from a map and have
 HU2393.an estimated accuracy of +/- 6 seconds.
 HU2393
 HU2393.The orthometric height was determined by differential leveling and
 HU2393.adjusted by the NATIONAL GEODETIC SURVEY
 HU2393.in June 1991.
 HU2393
 HU2393.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2393.GEOID18 height accuracy estimate available here.
 HU2393
 HU2393.Click photographs - Photos may exist for this station.
 HU2393
 HU2393.The dynamic height is computed by dividing the NAVD 88
 HU2393.geopotential number by the normal gravity value computed on the
 HU2393.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2393.degrees latitude (g = 980.6199 gals.).
 HU2393
 HU2393.The modeled gravity was interpolated from observed gravity values.
 HU2393
 HU2393;                    North         East    Units  Estimated Accuracy
 HU2393;SPC MD       -    72,030.      541,860.      MT  (+/- 180 meters Scaled)
 HU2393
 HU2393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH669396(NAD 83)
 HU2393
 HU2393                          SUPERSEDED SURVEY CONTROL
 HU2393
 HU2393  NGVD 29 (06/12/91)   10.096  (m)           33.12   (f) ADJUSTED    2 1
 HU2393
 HU2393.Superseded values are not recommended for survey control.
 HU2393
 HU2393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2393.See file dsdata.pdf to determine how the superseded data were derived.
 HU2393
 HU2393_MARKER: I = METAL ROD
 HU2393_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2393_STAMPING: E 190 1990
 HU2393_MARK LOGO: NGS
 HU2393_PROJECTION: FLUSH
 HU2393_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2393_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2393_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2393+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2393_ROD/PIPE-DEPTH: 23.1 meters
 HU2393_SLEEVE-DEPTH  : 0.9 meters
 HU2393
 HU2393  HISTORY     - Date     Condition        Report By
 HU2393  HISTORY     - 1990     MONUMENTED       NGS
 HU2393
 HU2393                          STATION DESCRIPTION
 HU2393
 HU2393'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2393'2.8 KM (1.74 MI) SOUTHERLY ALONG STATE HIGHWAY 354 (WILLARDS WHITON
 HU2393'ROAD) FROM THE JUNCTION OF STATE HIGHWAY 350 (MOUNT HERMON ROAD) IN
 HU2393'POWELLVILLE, 38.5 M (126.31 FT) WEST OF THE CENTERLINE OF THE HIGHWAY
 HU2393', 14.8 M (48.56 FT) SOUTHEAST OF THE ANNIE K. DENNIS HEADSTONE, 6.2 M
 HU2393'(20.34 FT) WEST OF THE CENTER OF A TRACK ROAD, 3.0 M (9.84 FT) WEST
 HU2393'OF A FENCE, 1.0 M (3.28 FT) NORTH OF A FENCE, AND 0.9 M (2.95 FT)
 HU2393'ABOVE THE LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS
 HU2393'THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OF THE DENNIS
 HU2393'CEMETERY, ATTN. MARY THOMAS, RT 1 BOX 105, PITTSVILLE, MD 21850,
 HU2393'TELEPHONE NUMBER (301) 835-8194.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8788 ***********************************************************************
 HV8788  DESIGNATION -  E 191
 HV8788  PID         -  HV8788
 HV8788  STATE/COUNTY-  MD/CHARLES
 HV8788  COUNTRY     -  US
 HV8788  USGS QUAD   -  MATHIAS POINT (2019)
 HV8788
 HV8788                         *CURRENT SURVEY CONTROL
 HV8788  ______________________________________________________________________
 HV8788* NAD 83(1986) POSITION- 38 29 10.     (N) 077 04 39.     (W)   SCALED
 HV8788* NAVD 88 ORTHO HEIGHT -    37.685 (meters)      123.64  (feet) ADJUSTED
 HV8788  ______________________________________________________________________
 HV8788  GEOID HEIGHT    -        -32.892 (meters)                     GEOID18
 HV8788  DYNAMIC HEIGHT  -         37.663 (meters)      123.57  (feet) COMP
 HV8788  MODELED GRAVITY -    980,040.2   (mgal)                       NAVD 88
 HV8788
 HV8788  VERT ORDER      -  FIRST     CLASS II
 HV8788
 HV8788.The horizontal coordinates were scaled from a map and have
 HV8788.an estimated accuracy of +/- 6 seconds.
 HV8788
 HV8788.The orthometric height was determined by differential leveling and
 HV8788.adjusted by the NATIONAL GEODETIC SURVEY
 HV8788.in June 1991.
 HV8788
 HV8788.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8788.GEOID18 height accuracy estimate available here.
 HV8788
 HV8788.Click photographs - Photos may exist for this station.
 HV8788
 HV8788.The dynamic height is computed by dividing the NAVD 88
 HV8788.geopotential number by the normal gravity value computed on the
 HV8788.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8788.degrees latitude (g = 980.6199 gals.).
 HV8788
 HV8788.The modeled gravity was interpolated from observed gravity values.
 HV8788
 HV8788;                    North         East    Units  Estimated Accuracy
 HV8788;SPC MD       -    90,960.      393,240.      MT  (+/- 180 meters Scaled)
 HV8788
 HV8788_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH188617(NAD 83)
 HV8788
 HV8788                          SUPERSEDED SURVEY CONTROL
 HV8788
 HV8788.No superseded survey control is available for this station.
 HV8788
 HV8788_MARKER: I = METAL ROD
 HV8788_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8788_STAMPING: E 191 1990
 HV8788_MARK LOGO: NGS
 HV8788_PROJECTION: FLUSH
 HV8788_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8788_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8788_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8788+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8788_ROD/PIPE-DEPTH: 13.3 meters
 HV8788
 HV8788  HISTORY     - Date     Condition        Report By
 HV8788  HISTORY     - 1990     MONUMENTED       NGS
 HV8788
 HV8788                          STATION DESCRIPTION
 HV8788
 HV8788'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8788'10.3 KM (6.40 MI) WESTERLY ALONG STATE HIGHWAY 6 FROM THE JUNCTION OF
 HV8788'U.S. HIGHWAY 301 IN LA PLATA, 25.9 M (84.97 FT) NORTHEAST OF UTILITY
 HV8788'POLE NUMBER 4 WITH ONE GUY WIRE, 22.4 M (73.49 FT) NORTHEAST OF THE
 HV8788'CENTER OF A DRIVEWAY, 14.0 M (45.93 FT) SOUTHEAST OF THE CENTERLINE
 HV8788'OF THE HIGHWAY, 0.3 M (0.98 FT) NORTH-NORTHWEST OF A WITNESS POST,
 HV8788'AND 0.3 M (0.98 FT) BELOW THE LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO
 HV8788'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8859 ***********************************************************************
 HV8859  DESIGNATION -  E 192
 HV8859  PID         -  HV8859
 HV8859  STATE/COUNTY-  MD/ST MARYS
 HV8859  COUNTRY     -  US
 HV8859  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV8859
 HV8859                         *CURRENT SURVEY CONTROL
 HV8859  ______________________________________________________________________
 HV8859* NAD 83(2011) POSITION- 38 13 37.44270(N) 076 28 17.93685(W)   ADJUSTED
 HV8859* NAD 83(2011) ELLIP HT-    -7.421 (meters)        (06/27/12)   ADJUSTED
 HV8859* NAD 83(2011) EPOCH   -  2010.00
 HV8859* NAVD 88 ORTHO HEIGHT -    27.070 (meters)       88.81  (feet) ADJUSTED
 HV8859  ______________________________________________________________________
 HV8859  GEOID HEIGHT    -        -34.538 (meters)                     GEOID18
 HV8859  NAD 83(2011) X  -  1,173,578.022 (meters)                     COMP
 HV8859  NAD 83(2011) Y  - -4,877,670.398 (meters)                     COMP
 HV8859  NAD 83(2011) Z  -  3,925,269.734 (meters)                     COMP
 HV8859  LAPLACE CORR    -         -5.86  (seconds)                    DEFLEC18
 HV8859  DYNAMIC HEIGHT  -         27.053 (meters)       88.76  (feet) COMP
 HV8859  MODELED GRAVITY -    980,005.3   (mgal)                       NAVD 88
 HV8859
 HV8859  VERT ORDER      -  SECOND    CLASS II
 HV8859
 HV8859  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8859  Standards:
 HV8859         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8859            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8859  -------------------------------------------------------------------
 HV8859  NETWORK    3.00   7.39           1.38   0.96   3.77     -0.30482969
 HV8859  -------------------------------------------------------------------
 HV8859  Click here for local accuracies and other accuracy information.
 HV8859
 HV8859.The horizontal coordinates were established by GPS observations
 HV8859.and adjusted by the National Geodetic Survey in June 2012.
 HV8859
 HV8859.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8859.been affixed to the stable North American tectonic plate. See 
 HV8859.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8859
 HV8859.The horizontal coordinates are valid at the epoch date displayed above
 HV8859.which is a decimal equivalence of Year/Month/Day.
 HV8859
 HV8859.The orthometric height was determined by differential leveling and
 HV8859.adjusted by the NATIONAL GEODETIC SURVEY
 HV8859.in June 1991.
 HV8859
 HV8859.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8859.GEOID18 height accuracy estimate available here.
 HV8859
 HV8859.Click photographs - Photos may exist for this station.
 HV8859
 HV8859.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8859
 HV8859.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8859
 HV8859.The ellipsoidal height was determined by GPS observations
 HV8859.and is referenced to NAD 83.
 HV8859
 HV8859.The dynamic height is computed by dividing the NAVD 88
 HV8859.geopotential number by the normal gravity value computed on the
 HV8859.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8859.degrees latitude (g = 980.6199 gals.).
 HV8859
 HV8859.The modeled gravity was interpolated from observed gravity values.
 HV8859
 HV8859. The following values were computed from the NAD 83(2011) position.
 HV8859
 HV8859;                    North         East     Units Scale Factor Converg.
 HV8859;SPC MD       -    62,341.057   446,263.269   MT  1.00001349   +0 19 53.8
 HV8859;SPC MD       -   204,530.62  1,464,115.41   sFT  1.00001349   +0 19 53.8
 HV8859;SPC VA S     - 1,212,078.477 3,677,600.944   MT  1.00005791   +1 13 51.8
 HV8859;SPC VA S     - 3,976,627.47 12,065,595.76   sFT  1.00005791   +1 13 51.8
 HV8859;UTM  18      - 4,232,032.859   371,189.199   MT  0.99980434   -0 54 38.7
 HV8859
 HV8859!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8859!SPC MD       -   1.00000116  x   1.00001349  =   1.00001465
 HV8859!SPC VA S     -   1.00000116  x   1.00005791  =   1.00005907
 HV8859!UTM  18      -   1.00000116  x   0.99980434  =   0.99980550
 HV8859
 HV8859_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7118932032(NAD 83)
 HV8859
 HV8859                          SUPERSEDED SURVEY CONTROL
 HV8859
 HV8859  NAD 83(2007)-  38 13 37.44393(N)    076 28 17.93754(W) AD(2002.00) 0
 HV8859  ELLIP H (02/10/07)   -7.459  (m)                       GP(2002.00)    
 HV8859  ELLIP H (08/30/02)   -7.435  (m)                       GP(       ) 4 2
 HV8859  NAD 83(1991)-  38 13 37.44316(N)    076 28 17.93700(W) AD(       ) 1
 HV8859  ELLIP H (05/28/98)   -7.380  (m)                       GP(       ) 3 1
 HV8859  NAD 83(1991)-  38 13 37.44354(N)    076 28 17.93622(W) AD(       ) 1
 HV8859  ELLIP H (11/16/93)   -7.408  (m)                       GP(       ) 3 1
 HV8859  NAVD 88              27.07   (m)           88.8    (f) LEVELING    3  
 HV8859
 HV8859.Superseded values are not recommended for survey control.
 HV8859
 HV8859.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8859.See file dsdata.pdf to determine how the superseded data were derived.
 HV8859
 HV8859_MARKER: DV = VERTICAL CONTROL DISK
 HV8859_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8859_STAMPING: E 192 1990
 HV8859_MARK LOGO: NGS
 HV8859_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8859_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8859+STABILITY: SURFACE MOTION
 HV8859_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8859+SATELLITE: SATELLITE OBSERVATIONS - February 05, 2014
 HV8859
 HV8859  HISTORY     - Date     Condition        Report By
 HV8859  HISTORY     - 1990     MONUMENTED       NGS
 HV8859  HISTORY     - 19921117 GOOD             MCCRON
 HV8859  HISTORY     - 19970709 GOOD             GPI
 HV8859  HISTORY     - 20000229 GOOD             GEOMET
 HV8859  HISTORY     - 20050416 GOOD             USPSQD
 HV8859  HISTORY     - 20090223 GOOD             MDSHA
 HV8859  HISTORY     - 20140205 GOOD             MDSHA
 HV8859
 HV8859                          STATION DESCRIPTION
 HV8859
 HV8859'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8859'2.5 KM (1.6 MI) EASTERLY ALONG STATE HIGHWAY 5 FROM THE JUNCTION OF
 HV8859'STATE HIGHWAY 246 IN GREAT MILLS, 84.1 M (275.9 FT) SOUTHEAST OF THE
 HV8859'CENTER OF A DRIVEWAY, 81.1 M (266.1 FT) SOUTHEAST OF THE NORTHWEST
 HV8859'END OF A WOODEN FENCE, 9.4 M (30.8 FT) SOUTHWEST OF AND LEVEL WITH
 HV8859'THE HIGHWAY CENTERLINE, 2.0 M (6.6 FT) SOUTH OF UTILITY POLE NUMBER
 HV8859'22 WITH ONE GUY WIRE, 0.4 M (1.3 FT) NORTHEAST OF A WITNESS POST AND
 HV8859'FENCE, AND THE MONUMENT PROJECTS 0.1 M (0.3 FT) ABOVE THE GROUND
 HV8859'SURFACE.
 HV8859
 HV8859                          STATION RECOVERY (1992)
 HV8859
 HV8859'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1992
 HV8859'RECOVERED IN GOOD CONDITION.
 HV8859
 HV8859                          STATION RECOVERY (1997)
 HV8859
 HV8859'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 1997 (JC)
 HV8859'RECOVERED AS DESCRIBED.
 HV8859
 HV8859                          STATION RECOVERY (2000)
 HV8859
 HV8859'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (DAR)
 HV8859'GOOD CONDITION.
 HV8859
 HV8859                          STATION RECOVERY (2005)
 HV8859
 HV8859'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPF)
 HV8859'HV8859
 HV8859'
 HV8859'THE DESCRIPTION HAS BEEN MODIFIED TO REFLECT ADDITIONAL REFERENCED
 HV8859'POINTS AND DISTANCES
 HV8859'
 HV8859'THE STATION IS LOCATED ALONG STATE HIGHWAY 5, 1.6 MI (2.5 KM)
 HV8859'SOUTHEASTERLY OF THE INTERSECTION OF STATE HIGHWAYS 5 AND 246 (GREAT
 HV8859'MILLS ROAD).
 HV8859'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 246 AND 5
 HV8859'(LEONARDTOWN POINT LOOKOUT ROAD) AT GREAT MILLS, MD., GO SOUTHEAST ON
 HV8859'STATE HIGHWAY 5 FOR 1.6 MI (2.5 KM) TO STATION ON THE RIGHT.
 HV8859'STATION IS 0.1 MI (0.2 KM) SOUTH OF HILTON RIDGE DRIVE AND NORTH OF
 HV8859'HATTON S REST LANE.  STATION IS 275.9 FT (84.1 M) SOUTHEAST OF THE
 HV8859'CENTER OF A DRIVEWAY AT 19341 STATE HIGHWAY 5, 266.1 FT (81.1 M)
 HV8859'SOUTHEAST OF THE NORTHWEST END OF A WOODEN FENCE, 30.8 FT (9.4 M)
 HV8859'SOUTHWEST OF AND LEVEL WITH THE HIGHWAY CENTERLINE, 6.6 FT (2.0 M)
 HV8859'SOUTH OF UTILITY POLE NUMBER 22 WITH TWO GUY WIRE, 1.3 FT (0.4 M)
 HV8859'NORTHEAST OF A WITNESS POST AND FENCE, AND THE MONUMENT IS FLUSH WITH
 HV8859'THE GROUND SURFACE.
 HV8859'
 HV8859
 HV8859                          STATION RECOVERY (2009)
 HV8859
 HV8859'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 HV8859'RECOVERED AS DESCRIBED.
 HV8859
 HV8859                          STATION RECOVERY (2014)
 HV8859
 HV8859'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2014 (DLW)
 HV8859'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8922 ***********************************************************************
 HV8922  DESIGNATION -  E 195
 HV8922  PID         -  HV8922
 HV8922  STATE/COUNTY-  MD/DORCHESTER
 HV8922  COUNTRY     -  US
 HV8922  USGS QUAD   -  GOLDEN HILL (2016)
 HV8922
 HV8922                         *CURRENT SURVEY CONTROL
 HV8922  ______________________________________________________________________
 HV8922* NAD 83(1986) POSITION- 38 28 27.1    (N) 076 08 34.5    (W)   HD_HELD2
 HV8922* NAVD 88 ORTHO HEIGHT -     1.216 (meters)        3.99  (feet) ADJUSTED
 HV8922  ______________________________________________________________________
 HV8922  GEOID HEIGHT    -        -35.071 (meters)                     GEOID18
 HV8922  DYNAMIC HEIGHT  -          1.215 (meters)        3.99  (feet) COMP
 HV8922  MODELED GRAVITY -    980,010.0   (mgal)                       NAVD 88
 HV8922
 HV8922  VERT ORDER      -  SECOND    CLASS I
 HV8922
 HV8922.The horizontal coordinates were established by autonomous hand held GPS
 HV8922.observations and have an estimated accuracy of +/- 10 meters.
 HV8922
 HV8922.The orthometric height was determined by differential leveling and
 HV8922.adjusted by the NATIONAL GEODETIC SURVEY
 HV8922.in August 1994.
 HV8922
 HV8922.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8922.GEOID18 height accuracy estimate available here.
 HV8922
 HV8922.Click photographs - Photos may exist for this station.
 HV8922
 HV8922.The dynamic height is computed by dividing the NAVD 88
 HV8922.geopotential number by the normal gravity value computed on the
 HV8922.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8922.degrees latitude (g = 980.6199 gals.).
 HV8922
 HV8922.The modeled gravity was interpolated from observed gravity values.
 HV8922
 HV8922;                    North         East    Units  Estimated Accuracy
 HV8922;SPC MD       -    89,990.      474,789.      MT  (+/- 10 meters HH2 GPS)
 HV8922
 HV8922_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0030359048(NAD 83)
 HV8922
 HV8922                          SUPERSEDED SURVEY CONTROL
 HV8922
 HV8922.No superseded survey control is available for this station.
 HV8922
 HV8922_MARKER: DV = VERTICAL CONTROL DISK
 HV8922_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8922_STAMPING: E 195 1990
 HV8922_MARK LOGO: NGS
 HV8922_PROJECTION: FLUSH
 HV8922_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8922_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8922+STABILITY: SURFACE MOTION
 HV8922_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8922+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2014
 HV8922
 HV8922  HISTORY     - Date     Condition        Report By
 HV8922  HISTORY     - 1990     MONUMENTED       MDSHA
 HV8922  HISTORY     - 20051231 GOOD             USPSQD
 HV8922  HISTORY     - 20070130 GOOD             USPSQD
 HV8922  HISTORY     - 20140208 GOOD             ARCSHE
 HV8922
 HV8922                          STATION DESCRIPTION
 HV8922
 HV8922'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HV8922'3.5 KM (2.2 MI) SOUTH ALONG STATE HIGHWAY 335 FROM THE JUNCTION OF
 HV8922'STATE HIGHWAY 16 AT CHURCH CREEK, AT THE CHURCH CREEK FIRE TOWER,
 HV8922'38.8 FT (11.8 M) EAST OF THE CENTERLINE OF STATE HIGHWAY 335, 49.7 FT
 HV8922'(15.1 M) WEST OF THE NORTHWEST LEG OF THE FIRE TOWER, 52.2 FT
 HV8922'(15.9 M) WEST-NORTHWEST OF THE SOUTHWEST LEG OF THE FIRE TOWER, 68.6
 HV8922'FT (20.9 M) NORTH-NORTHEAST OF POWER POLE NUMBER 43, SET IN THE TOP
 HV8922'OF A 1.0 FT (0.3 M) ROUND CONCRETE POST FLUSH WITH THE GROUND AND
 HV8922'LEVEL WITH THE HIGHWAY.
 HV8922
 HV8922                          STATION RECOVERY (2005)
 HV8922
 HV8922'RECOVERY NOTE BY US POWER SQUADRON 2005 (NNH)
 HV8922'RECOVERED IN GOOD CONDITION.
 HV8922
 HV8922                          STATION RECOVERY (2007)
 HV8922
 HV8922'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HV8922'RECOVERED IN GOOD CONDITION.
 HV8922
 HV8922                          STATION RECOVERY (2014)
 HV8922
 HV8922'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV8922'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4393 ***********************************************************************
 JU4393  DESIGNATION -  E 196
 JU4393  PID         -  JU4393
 JU4393  STATE/COUNTY-  MD/QUEEN ANNES
 JU4393  COUNTRY     -  US
 JU4393  USGS QUAD   -  CHURCH HILL (2017)
 JU4393
 JU4393                         *CURRENT SURVEY CONTROL
 JU4393  ______________________________________________________________________
 JU4393* NAD 83(1986) POSITION- 39 12 28.9    (N) 075 53 17.8    (W)   HD_HELD2
 JU4393* NAVD 88 ORTHO HEIGHT -    17.138 (meters)       56.23  (feet) ADJUSTED
 JU4393  ______________________________________________________________________
 JU4393  GEOID HEIGHT    -        -33.666 (meters)                     GEOID18
 JU4393  DYNAMIC HEIGHT  -         17.129 (meters)       56.20  (feet) COMP
 JU4393  MODELED GRAVITY -    980,105.9   (mgal)                       NAVD 88
 JU4393
 JU4393  VERT ORDER      -  SECOND    CLASS I
 JU4393
 JU4393.The horizontal coordinates were established by autonomous hand held GPS
 JU4393.observations and have an estimated accuracy of +/- 10 meters.
 JU4393
 JU4393.The orthometric height was determined by differential leveling and
 JU4393.adjusted by the NATIONAL GEODETIC SURVEY
 JU4393.in July 1996.
 JU4393
 JU4393.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4393.GEOID18 height accuracy estimate available here.
 JU4393
 JU4393.Click photographs - Photos may exist for this station.
 JU4393
 JU4393.The dynamic height is computed by dividing the NAVD 88
 JU4393.geopotential number by the normal gravity value computed on the
 JU4393.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4393.degrees latitude (g = 980.6199 gals.).
 JU4393
 JU4393.The modeled gravity was interpolated from observed gravity values.
 JU4393
 JU4393;                    North         East    Units  Estimated Accuracy
 JU4393;SPC MD       -   171,685.      496,016.      MT  (+/- 10 meters HH2 GPS)
 JU4393
 JU4393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2330740237(NAD 83)
 JU4393
 JU4393                          SUPERSEDED SURVEY CONTROL
 JU4393
 JU4393.No superseded survey control is available for this station.
 JU4393
 JU4393_MARKER: DD = SURVEY DISK
 JU4393_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4393_STAMPING: E 196 1991
 JU4393_MARK LOGO: MDSHA
 JU4393_PROJECTION: RECESSED 5 CENTIMETERS
 JU4393_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4393_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4393+STABILITY: SURFACE MOTION
 JU4393_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU4393+SATELLITE: SATELLITE OBSERVATIONS - February 25, 2013
 JU4393
 JU4393  HISTORY     - Date     Condition        Report By
 JU4393  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4393  HISTORY     - 20020301 GOOD             USPSQD
 JU4393  HISTORY     - 20130225 GOOD             ARCSHE
 JU4393
 JU4393                          STATION DESCRIPTION
 JU4393
 JU4393'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4393'THE MARKER IS LOCATED ABOUT 3 MI (4.8 KM) SOUTHEAST OF CRUMPTON, 1.75
 JU4393'MI (2.82 KM) NORTH OF DUDLEY CORNERS AND ALONG THE SOUTHEAST SIDE OF
 JU4393'U.S. HIGHWAY 301.  IT IS ON ROAD RIGHT-OF-WAY.
 JU4393'
 JU4393'TO REACH FROM THE POST OFFICE IN CRUMPTON, GO SOUTH ON STATE HIGHWAY
 JU4393'290 FOR 3.25 MI (5.23 KM) TO U.S. HIGHWAY 301.  TURN LEFT AND GO
 JU4393'NORTHERLY ON U.S.  HIGHWAY 301 FOR 0.9 MI (1.4 KM) TO THE MARKER ON
 JU4393'THE RIGHT.
 JU4393'
 JU4393'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JU4393'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS
 JU4393'RECESSED ABOUT 0.15 FT (0.05 M) BELOW THE SURFACE OF THE GROUND.  IT
 JU4393'IS 49.4 FT (15.1 M) SOUTHEAST OF THE CENTER OF THE NORTHBOUND LANE OF
 JU4393'U.S.  HIGHWAY 301, 140 FT (42.7 M) NORTHEAST OF THE CENTER OF A 2.0 FT
 JU4393'(0.6 M) CONCRETE PIPE WHICH RUNS UNDER U.S. HIGHWAY 301, 0.5 FT
 JU4393'(0.2 M) WEST OF THE EDGE OF A WOODED AREA, 1.8 FT (0.5 M) NORTHWEST OF
 JU4393'A CARSONITE WITNESS POST AND ABOUT 3.5 FT (1.1 M) BELOW THE SURFACE OF
 JU4393'THE HIGHWAY.
 JU4393
 JU4393                          STATION RECOVERY (2002)
 JU4393
 JU4393'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4393'RECOVERED IN GOOD CONDITION.
 JU4393
 JU4393                          STATION RECOVERY (2013)
 JU4393
 JU4393'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU4393'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6916 ***********************************************************************
 JV6916  DESIGNATION -  E 197
 JV6916  PID         -  JV6916
 JV6916  STATE/COUNTY-  MD/C OF BALTIMORE
 JV6916  COUNTRY     -  US
 JV6916  USGS QUAD   -  BALTIMORE EAST (2016)
 JV6916
 JV6916                         *CURRENT SURVEY CONTROL
 JV6916  ______________________________________________________________________
 JV6916* NAD 83(1986) POSITION- 39 19 20.     (N) 076 31 48.     (W)   SCALED
 JV6916* NAVD 88 ORTHO HEIGHT -    28.385 (meters)       93.13  (feet) ADJUSTED
 JV6916  ______________________________________________________________________
 JV6916  GEOID HEIGHT    -        -32.865 (meters)                     GEOID18
 JV6916  DYNAMIC HEIGHT  -         28.370 (meters)       93.08  (feet) COMP
 JV6916  MODELED GRAVITY -    980,099.0   (mgal)                       NAVD 88
 JV6916
 JV6916  VERT ORDER      -  SECOND    CLASS I
 JV6916
 JV6916.The horizontal coordinates were scaled from a map and have
 JV6916.an estimated accuracy of +/- 6 seconds.
 JV6916
 JV6916.The orthometric height was determined by differential leveling and
 JV6916.adjusted by the NATIONAL GEODETIC SURVEY
 JV6916.in June 1995.
 JV6916
 JV6916.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6916.GEOID18 height accuracy estimate available here.
 JV6916
 JV6916.Click photographs - Photos may exist for this station.
 JV6916
 JV6916.The dynamic height is computed by dividing the NAVD 88
 JV6916.geopotential number by the normal gravity value computed on the
 JV6916.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6916.degrees latitude (g = 980.6199 gals.).
 JV6916
 JV6916.The modeled gravity was interpolated from observed gravity values.
 JV6916
 JV6916;                    North         East    Units  Estimated Accuracy
 JV6916;SPC MD       -   183,880.      440,530.      MT  (+/- 180 meters Scaled)
 JV6916
 JV6916_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ681536(NAD 83)
 JV6916
 JV6916                          SUPERSEDED SURVEY CONTROL
 JV6916
 JV6916.No superseded survey control is available for this station.
 JV6916
 JV6916_MARKER: DD = SURVEY DISK
 JV6916_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV6916+WITH SETTING: PAVEMENT
 JV6916_SP_SET: LIGHTPOLE BASE
 JV6916_STAMPING: E 197 1991
 JV6916_MARK LOGO: MDSHA
 JV6916_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6916_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6916
 JV6916  HISTORY     - Date     Condition        Report By
 JV6916  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6916
 JV6916                          STATION DESCRIPTION
 JV6916
 JV6916'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6916'THE MARKER IS LOCATED IN THE EAST PART OF BALTIMORE WHERE INTERSTATE
 JV6916'HIGHWAY 95 CROSSES THE CITY OF BALTIMORE AND BALTIMORE COUNTY LINE.
 JV6916'TO REACH FROM THE INTERSTATE HIGHWAY 95 NORTHBOUND TOLL PLAZA WHICH
 JV6916'IS LOCATED ON THE NORTHEAST SIDE OF THE FORT MCHENRY TUNNEL, GO
 JV6916'NORTHEAST ON INTERSTATE HIGHWAY 95 FOR 4.9 MI (7.9 KM) TO THE MARKER
 JV6916'ON THE RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK IN
 JV6916'THE CONCRETE BASE FOR A LARGE HIGHMAST LIGHTPOLE, 25 FT (7.6 M)
 JV6916'SOUTHEAST OF THE MOST SOUTHEAST EDGE OF THE PAVED SOUTHEAST SHOULDER
 JV6916'OF THE NORTHBOUND LANE ALONG INTERSTATE HIGHWAY 95, 12 FT (3.7 M)
 JV6916'SOUTHEAST OF THE CENTER OF A CONCRETE DRAINAGE DITCH, 60 FT (18.3 M)
 JV6916'NORTHWEST OF THE SOUTHEAST RIGHT-OF-WAY FENCE AND ABOUT 4 FT (1.2 M)
 JV6916'HIGHER THAN INTERSTATE HIGHWAY 95.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1587 ***********************************************************************
 JW1587  DESIGNATION -  E 198
 JW1587  PID         -  JW1587
 JW1587  STATE/COUNTY-  MD/GARRETT
 JW1587  COUNTRY     -  US
 JW1587  USGS QUAD   -  TABLE ROCK (2016)
 JW1587
 JW1587                         *CURRENT SURVEY CONTROL
 JW1587  ______________________________________________________________________
 JW1587* NAD 83(1986) POSITION- 39 21 38.25   (N) 079 25 21.90   (W)   HD_HELD1
 JW1587* NAVD 88 ORTHO HEIGHT -   751.619 (meters)     2465.94  (feet) ADJUSTED
 JW1587  ______________________________________________________________________
 JW1587  GEOID HEIGHT    -        -31.094 (meters)                     GEOID18
 JW1587  DYNAMIC HEIGHT  -        751.098 (meters)     2464.23  (feet) COMP
 JW1587  MODELED GRAVITY -    979,908.1   (mgal)                       NAVD 88
 JW1587
 JW1587  VERT ORDER      -  SECOND    CLASS I
 JW1587
 JW1587.The horizontal coordinates were determined by differentially corrected
 JW1587.hand held GPS observations or other comparable positioning techniques
 JW1587.and have an estimated accuracy of +/- 3 meters.
 JW1587
 JW1587.The orthometric height was determined by differential leveling and
 JW1587.adjusted by the NATIONAL GEODETIC SURVEY
 JW1587.in April 1995.
 JW1587
 JW1587.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1587.GEOID18 height accuracy estimate available here.
 JW1587
 JW1587.Click photographs - Photos may exist for this station.
 JW1587
 JW1587.The dynamic height is computed by dividing the NAVD 88
 JW1587.geopotential number by the normal gravity value computed on the
 JW1587.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1587.degrees latitude (g = 980.6199 gals.).
 JW1587
 JW1587.The modeled gravity was interpolated from observed gravity values.
 JW1587
 JW1587;                    North         East    Units  Estimated Accuracy
 JW1587;SPC MD       -   190,811.6     191,222.9     MT  (+/- 3 meters HH1 GPS) 
 JW1587
 JW1587_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3588457983(NAD 83)
 JW1587
 JW1587                          SUPERSEDED SURVEY CONTROL
 JW1587
 JW1587.No superseded survey control is available for this station.
 JW1587
 JW1587_MARKER: DD = SURVEY DISK
 JW1587_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JW1587_SP_SET: HEADWALL
 JW1587_STAMPING: E 198 1991
 JW1587_MARK LOGO: MDSHA
 JW1587_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1587_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW1587_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1587+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2016
 JW1587
 JW1587  HISTORY     - Date     Condition        Report By
 JW1587  HISTORY     - 1991     MONUMENTED       MDSHA
 JW1587  HISTORY     - 20090725 GOOD             GEOCAC
 JW1587  HISTORY     - 20160925 GOOD             GEOCAC
 JW1587
 JW1587                          STATION DESCRIPTION
 JW1587
 JW1587'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW1587'THE MARK IS LOCATED ABOUT 0.5 MI (0.8 KM) NORTH-NORTHEAST OF GORTNER,
 JW1587'3.45 MI (5.55 KM) SOUTH-SOUTHWEST OF OAKLAND AND ALONG U.S. HIGHWAY
 JW1587'219.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARK FROM THE POST
 JW1587'OFFICE IN OAKLAND, GO SOUTHWEST ON SECOND STREET FOR 0.2 MI (0.3 KM)
 JW1587'TO U.S. HIGHWAY 219.  TURN LEFT AND GO SOUTH ON U.S. HIGHWAY 219
 JW1587'FOR 3.9 MI (6.3 KM) TO THE MARK ON THE RIGHT.  THE POINT IS MARKED
 JW1587'WITH A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE
 JW1587'SOUTHWEST CORNER OF THE TOP OF A CONCRETE HEADWALL.  IT IS 70.0 FT
 JW1587'(21.3 M) NORTHWEST OF THE CENTER OF U.S. HIGHWAY 219, 36.0 FT (11.0
 JW1587'M) NORTH OF A TELEPHONE POLE NUMBER C AND P 116 AND 1.3 FT (0.4 M)
 JW1587'NORTHWEST OF THE WITNESS POST.  IT IS ABOUT 12.5 FT (3.8 M) LOWER
 JW1587'THEN THE SURFACE OF THE ROAD.
 JW1587
 JW1587                          STATION RECOVERY (2009)
 JW1587
 JW1587'RECOVERY NOTE BY GEOCACHING 2009 (BP)
 JW1587'RECOVERED IN GOOD CONDITION.
 JW1587
 JW1587                          STATION RECOVERY (2016)
 JW1587
 JW1587'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW1587'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2784 ***********************************************************************
 HU2784  DESIGNATION -  E 199
 HU2784  PID         -  HU2784
 HU2784  STATE/COUNTY-  MD/WORCESTER
 HU2784  COUNTRY     -  US
 HU2784  USGS QUAD   -  BERLIN (2016)
 HU2784
 HU2784                         *CURRENT SURVEY CONTROL
 HU2784  ______________________________________________________________________
 HU2784* NAD 83(2011) POSITION- 38 20 35.67497(N) 075 11 24.92738(W)   ADJUSTED
 HU2784* NAD 83(2011) ELLIP HT-   -27.202 (meters)        (03/04/17)   ADJUSTED
 HU2784* NAD 83(2011) EPOCH   -  2010.00
 HU2784* NAVD 88 ORTHO HEIGHT -     8.797 (meters)       28.86  (feet) ADJUSTED
 HU2784  ______________________________________________________________________
 HU2784  GEOID HEIGHT    -        -36.013 (meters)                     GEOID18
 HU2784  NAD 83(2011) X  -  1,280,315.855 (meters)                     COMP
 HU2784  NAD 83(2011) Y  - -4,842,466.881 (meters)                     COMP
 HU2784  NAD 83(2011) Z  -  3,935,379.771 (meters)                     COMP
 HU2784  LAPLACE CORR    -         -0.56  (seconds)                    DEFLEC18
 HU2784  DYNAMIC HEIGHT  -          8.791 (meters)       28.84  (feet) COMP
 HU2784  MODELED GRAVITY -    980,007.8   (mgal)                       NAVD 88
 HU2784
 HU2784  VERT ORDER      -  SECOND    CLASS I
 HU2784
 HU2784  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2784  Standards:
 HU2784         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2784            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2784  -------------------------------------------------------------------
 HU2784  NETWORK    0.50   0.98           0.22   0.19   0.50     -0.01345161
 HU2784  -------------------------------------------------------------------
 HU2784  Click here for local accuracies and other accuracy information.
 HU2784
 HU2784.The horizontal coordinates were established by GPS observations
 HU2784.and adjusted by the ARCHER-SHEE LAND SURVEYING in March 2017.
 HU2784
 HU2784.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2784.been affixed to the stable North American tectonic plate. See 
 HU2784.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2784
 HU2784.The horizontal coordinates are valid at the epoch date displayed above
 HU2784.which is a decimal equivalence of Year/Month/Day.
 HU2784
 HU2784.The orthometric height was determined by differential leveling and
 HU2784.adjusted by the NATIONAL GEODETIC SURVEY
 HU2784.in November 1994.
 HU2784
 HU2784.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2784.GEOID18 height accuracy estimate available here.
 HU2784
 HU2784.Click photographs - Photos may exist for this station.
 HU2784
 HU2784.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2784
 HU2784.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2784
 HU2784.The ellipsoidal height was determined by GPS observations
 HU2784.and is referenced to NAD 83.
 HU2784
 HU2784.The dynamic height is computed by dividing the NAVD 88
 HU2784.geopotential number by the normal gravity value computed on the
 HU2784.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2784.degrees latitude (g = 980.6199 gals.).
 HU2784
 HU2784.The modeled gravity was interpolated from observed gravity values.
 HU2784
 HU2784. The following values were computed from the NAD 83(2011) position.
 HU2784
 HU2784;                    North         East     Units Scale Factor Converg.
 HU2784;SPC MD       -    76,671.079   558,198.884   MT  0.99999276   +1 08 09.1
 HU2784;SPC MD       -   251,545.03  1,831,357.51   sFT  0.99999276   +1 08 09.1
 HU2784;UTM  18      - 4,243,916.790   483,374.041   MT  0.99960340   -0 07 04.9
 HU2784
 HU2784!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2784!SPC MD       -   1.00000427  x   0.99999276  =   0.99999703
 HU2784!UTM  18      -   1.00000427  x   0.99960340  =   0.99960767
 HU2784
 HU2784_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8337443916(NAD 83)
 HU2784
 HU2784                          SUPERSEDED SURVEY CONTROL
 HU2784
 HU2784  NGVD 29 (02/25/92)    9.041  (m)           29.66   (f) ADJUSTED    2 1
 HU2784
 HU2784.Superseded values are not recommended for survey control.
 HU2784
 HU2784.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2784.See file dsdata.pdf to determine how the superseded data were derived.
 HU2784
 HU2784_MARKER: DV = VERTICAL CONTROL DISK
 HU2784_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2784_STAMPING: E 199 1991
 HU2784_MARK LOGO: NGS
 HU2784_PROJECTION: RECESSED 8 CENTIMETERS
 HU2784_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2784_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2784+STABILITY: SURFACE MOTION
 HU2784_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2784+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2016
 HU2784
 HU2784  HISTORY     - Date     Condition        Report By
 HU2784  HISTORY     - 1991     MONUMENTED       MDSHA
 HU2784  HISTORY     - 20031228 MARK NOT FOUND   USPSQD
 HU2784  HISTORY     - 20051129 MARK NOT FOUND   USPSQD
 HU2784  HISTORY     - 20130618 GOOD             ARCSHE
 HU2784  HISTORY     - 20160220 GOOD             ARCSHE
 HU2784
 HU2784                          STATION DESCRIPTION
 HU2784
 HU2784'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2784'THE MARK IS LOCATED ABOUT 5.63 MI (9.06 KM) WEST OF OCEAN CITY, 2.03
 HU2784'MI (3.27 KM) NORTHEAST OF BERLIN, AND ON ROAD RIGHT-OF-WAY.  TO REACH
 HU2784'FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN, GO
 HU2784'EAST ON U.S. HIGHWAY 50 FOR 1.29 MI (2.08 KM) TO THE INTERSECTION OF
 HU2784'STATE ROUTE 452 AND THE MARK ON THE LEFT IN THE MEDIAN.  IT IS 76.6
 HU2784'FT (23.3 M) WEST OF THE CENTER LINE OF STATE ROUTE 452, 50.5 FT (15.4
 HU2784'M) NORTH OF THE CENTER LINE OF THE EASTBOUND LANES OF U.S HIGHWAY 50,
 HU2784'29.5 FT (9.0 M) WEST OF A TRAFFIC LIGHT POLE, 24.4 FT (7.4 M)
 HU2784'NORTHEAST OF A CARSONITE WITNESS POST, 22.0 FT (6.7 M) SOUTH OF THE
 HU2784'CENTER LINE OF THE WESTBOUND LANES OF THE HIGHWAY AND SET IN THE TOP
 HU2784'OF A 0.8 FT (0.2 M) ROUND CONCRETE POST FLUSH WITH THE GROUND.
 HU2784
 HU2784                          STATION RECOVERY (2003)
 HU2784
 HU2784'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU2784'MARK NOT FOUND.
 HU2784
 HU2784                          STATION RECOVERY (2005)
 HU2784
 HU2784'RECOVERY NOTE BY US POWER SQUADRON 2005 (WAC)
 HU2784'MARK NOT FOUND.
 HU2784
 HU2784                          STATION RECOVERY (2013)
 HU2784
 HU2784'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU2784'NOW 16.0 FT (4.9 M) WEST OF A NEW TRAFFIC SIGNAL POLE.
 HU2784
 HU2784                          STATION RECOVERY (2016)
 HU2784
 HU2784'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MRA)
 HU2784'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0878 ***********************************************************************
 JV0878  DESIGNATION -  E 25 X
 JV0878  PID         -  JV0878
 JV0878  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0878  COUNTRY     -  US
 JV0878  USGS QUAD   -  BELTSVILLE (2016)
 JV0878
 JV0878                         *CURRENT SURVEY CONTROL
 JV0878  ______________________________________________________________________
 JV0878* NAD 83(1991) POSITION- 39 03 34.98487(N) 076 55 17.35721(W)   ADJUSTED
 JV0878* NAVD 88 ORTHO HEIGHT -    85.98  (meters)      282.1   (feet) RESET
 JV0878  ______________________________________________________________________
 JV0878  GEOID HEIGHT    -        -32.116 (meters)                     GEOID18
 JV0878  LAPLACE CORR    -         -3.85  (seconds)                    DEFLEC18
 JV0878  HORZ ORDER      -  SECOND
 JV0878  VERT ORDER      -  THIRD
 JV0878
 JV0878.The horizontal coordinates were established by classical geodetic methods
 JV0878.and adjusted by the National Geodetic Survey in January 1992.
 JV0878
 JV0878.The orthometric height was computed from unverified reset data.
 JV0878
 JV0878.No vertical observational check was made to the station.
 JV0878
 JV0878.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0878.GEOID18 height accuracy estimate available here.
 JV0878
 JV0878.Click photographs - Photos may exist for this station.
 JV0878
 JV0878.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0878
 JV0878. The following values were computed from the NAD 83(1991) position.
 JV0878
 JV0878;                    North         East     Units Scale Factor Converg.
 JV0878;SPC MD       -   154,638.480   406,795.175   MT  0.99995498   +0 02 57.4
 JV0878;SPC MD       -   507,343.08  1,334,627.17   sFT  0.99995498   +0 02 57.4
 JV0878;UTM  18      - 4,325,160.589   333,748.441   MT  0.99994034   -1 12 39.8
 JV0878
 JV0878!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0878!SPC MD       -   0.99999155  x   0.99995498  =   0.99994653
 JV0878!UTM  18      -   0.99999155  x   0.99994034  =   0.99993189
 JV0878
 JV0878_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3374825160(NAD 83)
 JV0878
 JV0878                          SUPERSEDED SURVEY CONTROL
 JV0878
 JV0878  NAD 83(1986)-  39 03 34.98381(N)    076 55 17.36760(W) AD(       ) 2
 JV0878  NAD 27      -  39 03 34.59126(N)    076 55 18.46098(W) AD(       ) 2
 JV0878  NGVD 29 (??/??/??)   86.20   (m)          282.8    (f) RESET       3  
 JV0878  NGVD 29              86.20   (m)          282.8    (f) LEVELING    3  
 JV0878  NGVD 29              86.18   (m)          282.7    (f) LEVELING    3  
 JV0878
 JV0878.Superseded values are not recommended for survey control.
 JV0878
 JV0878.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0878.See file dsdata.pdf to determine how the superseded data were derived.
 JV0878
 JV0878_MARKER: DB = BENCH MARK DISK
 JV0878_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0878_STAMPING: E 25 X 1968
 JV0878_MARK LOGO: CGS
 JV0878_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0878+STABILITY: SURFACE MOTION
 JV0878
 JV0878  HISTORY     - Date     Condition        Report By
 JV0878  HISTORY     - 1968     MONUMENTED       CGS
 JV0878  HISTORY     - 1970     GOOD             NGS
 JV0878  HISTORY     - 1971     GOOD             NGS
 JV0878  HISTORY     - 19910628 MARK NOT FOUND   USPSQD
 JV0878
 JV0878                          STATION DESCRIPTION
 JV0878
 JV0878'DESCRIBED BY COAST AND GEODETIC SURVEY 1968
 JV0878'1.4 MI NW FROM BELTSVILLE.
 JV0878'1.45 MILES NORTHWEST ALONG STATE HIGHWAY 212 (POWDER MILL ROAD)
 JV0878'FROM THE JUNCTION OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 0.6
 JV0878'MILES NORTH ALONG GUN POWDER ROAD, 45.7 FEET WEST OF THE CENTER
 JV0878'LINE OF THE ROAD, 3.4 FEET EAST OF C AND P POLE 14, AND SET IN
 JV0878'THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV0878
 JV0878                          STATION RECOVERY (1970)
 JV0878
 JV0878'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV0878'1.45 MILES NORTHWEST ALONG STATE HIGHWAY 212, (POWDER MILL ROAD),
 JV0878'FROM THE JUNCTION OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 0.6
 JV0878'MILE NORTH ALONG GUN POWDER ROAD, 34.7 FEET WEST OF THE CENTERLINE
 JV0878'OF THE ROAD, 3.4 FEET EAST OF A POWER LINE POLE NUMBERED 319672.
 JV0878'
 JV0878'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION POWDER
 JV0878'1957, DISTANCE BEING 486.350 METERS SOUTH OF STATION POWDER
 JV0878'1957.  THE MARK IS A STANDARD BENCH MARK DISK, STAMPED E 25 X 1968,
 JV0878'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST, THAT PROJECTS 4
 JV0878'INCHES ABOVE THE GROUND.
 JV0878'
 JV0878'THE MARK ALSO SERVES AS AN AZIMUTH MARK FOR STATION POWDER 1957.
 JV0878'
 JV0878'THE TRAVERSE CONNECTION WAS MADE WITH A GEODIMETER.
 JV0878
 JV0878                          STATION RECOVERY (1971)
 JV0878
 JV0878'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0878'RECOVERED IN GOOD CONDITION.
 JV0878
 JV0878                          STATION RECOVERY (1991)
 JV0878
 JV0878'RECOVERY NOTE BY US POWER SQUADRON 1991 (WAY)
 JV0878'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0924 ***********************************************************************
 JV0924  DESIGNATION -  E 26
 JV0924  PID         -  JV0924
 JV0924  STATE/COUNTY-  MD/BALTIMORE
 JV0924  COUNTRY     -  US
 JV0924  USGS QUAD   -  RELAY (2016)
 JV0924
 JV0924                         *CURRENT SURVEY CONTROL
 JV0924  ______________________________________________________________________
 JV0924* NAD 83(1986) POSITION- 39 14 02.     (N) 076 39 42.     (W)   SCALED
 JV0924* NAVD 88 ORTHO HEIGHT -    10.974 (meters)       36.00  (feet) ADJUSTED
 JV0924  ______________________________________________________________________
 JV0924  GEOID HEIGHT    -        -32.666 (meters)                     GEOID18
 JV0924  DYNAMIC HEIGHT  -         10.968 (meters)       35.98  (feet) COMP
 JV0924  MODELED GRAVITY -    980,100.3   (mgal)                       NAVD 88
 JV0924
 JV0924  VERT ORDER      -  SECOND    CLASS 0
 JV0924
 JV0924.The horizontal coordinates were scaled from a map and have
 JV0924.an estimated accuracy of +/- 6 seconds.
 JV0924
 JV0924.The orthometric height was determined by differential leveling and
 JV0924.adjusted by the NATIONAL GEODETIC SURVEY
 JV0924.in June 1991.
 JV0924
 JV0924.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0924.GEOID18 height accuracy estimate available here.
 JV0924
 JV0924.Click photographs - Photos may exist for this station.
 JV0924
 JV0924.The dynamic height is computed by dividing the NAVD 88
 JV0924.geopotential number by the normal gravity value computed on the
 JV0924.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0924.degrees latitude (g = 980.6199 gals.).
 JV0924
 JV0924.The modeled gravity was interpolated from observed gravity values.
 JV0924
 JV0924;                    North         East    Units  Estimated Accuracy
 JV0924;SPC MD       -   174,030.      429,210.      MT  (+/- 180 meters Scaled)
 JV0924
 JV0924_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ565440(NAD 83)
 JV0924
 JV0924                          SUPERSEDED SURVEY CONTROL
 JV0924
 JV0924  NGVD 29 (11/26/84)   11.209  (m)           36.77   (f) ADJUSTED    2 0
 JV0924
 JV0924.Superseded values are not recommended for survey control.
 JV0924
 JV0924.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0924.See file dsdata.pdf to determine how the superseded data were derived.
 JV0924
 JV0924_MARKER: DB = BENCH MARK DISK
 JV0924_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0924_SP_SET: OVERPASS
 JV0924_STAMPING: E 26 1957
 JV0924_MARK LOGO: CGS
 JV0924_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0924
 JV0924  HISTORY     - Date     Condition        Report By
 JV0924  HISTORY     - 1957     MONUMENTED       CGS
 JV0924  HISTORY     - 1960     GOOD             CGS
 JV0924  HISTORY     - 20030126 MARK NOT FOUND   USPSQD
 JV0924
 JV0924                          STATION DESCRIPTION
 JV0924
 JV0924'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0924'4.7 MI W FROM BROOKLYN.
 JV0924'4.7 MILES WEST ALONG HARBOR TUNNEL THRUWAY FROM TOLL GATE AT
 JV0924'BROOKLYN, ABOUT 0.2 MILE SOUTHEAST OF CENTER OF OVERPASS OVER
 JV0924'BALTIMORE BELTWAY (INTERSTATE HIGHWAY 695), IN THE TOP OF
 JV0924'SOUTHWEST CURB OF SOUTHEAST BOUND TRAFFIC LANE OF OVERPASS OVER
 JV0924'HAMMONDS FERRY ROAD, 23 FEET SOUTHWEST OF CENTER LINE OF
 JV0924'SOUTHEAST BOUND TRAFFIC LANE, 4 FEET NORTHWEST OF SOUTHEAST END
 JV0924'OF CURBING AND 1/2 FOOT ABOVE LEVEL OF HIGHWAY.
 JV0924
 JV0924                          STATION RECOVERY (2003)
 JV0924
 JV0924'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV0924'MARK NOT FOUND.  NEW BRIDGE RENOVATION HAS APPARENTLY DESTROYED THE
 JV0924'MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3579 ***********************************************************************
 JV3579  DESIGNATION -  E 27
 JV3579  PID         -  JV3579
 JV3579  STATE/COUNTY-  MD/WASHINGTON
 JV3579  COUNTRY     -  US
 JV3579  USGS QUAD   -  FUNKSTOWN (2017)
 JV3579
 JV3579                         *CURRENT SURVEY CONTROL
 JV3579  ______________________________________________________________________
 JV3579* NAD 83(1986) POSITION- 39 33 30.     (N) 077 37 38.     (W)   SCALED
 JV3579* NAVD 88 ORTHO HEIGHT -   182.207 (meters)      597.79  (feet) ADJUSTED
 JV3579  ______________________________________________________________________
 JV3579  GEOID HEIGHT    -        -33.631 (meters)                     GEOID18
 JV3579  DYNAMIC HEIGHT  -        182.100 (meters)      597.44  (feet) COMP
 JV3579  MODELED GRAVITY -    980,040.7   (mgal)                       NAVD 88
 JV3579
 JV3579  VERT ORDER      -  SECOND    CLASS 0
 JV3579
 JV3579.The horizontal coordinates were scaled from a map and have
 JV3579.an estimated accuracy of +/- 6 seconds.
 JV3579
 JV3579.The orthometric height was determined by differential leveling and
 JV3579.adjusted by the NATIONAL GEODETIC SURVEY
 JV3579.in June 1991.
 JV3579
 JV3579.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3579.GEOID18 height accuracy estimate available here.
 JV3579
 JV3579.Click photographs - Photos may exist for this station.
 JV3579
 JV3579.The dynamic height is computed by dividing the NAVD 88
 JV3579.geopotential number by the normal gravity value computed on the
 JV3579.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3579.degrees latitude (g = 980.6199 gals.).
 JV3579
 JV3579.The modeled gravity was interpolated from observed gravity values.
 JV3579
 JV3579;                    North         East    Units  Estimated Accuracy
 JV3579;SPC MD       -   210,180.      346,100.      MT  (+/- 180 meters Scaled)
 JV3579
 JV3579_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ742820(NAD 83)
 JV3579
 JV3579                          SUPERSEDED SURVEY CONTROL
 JV3579
 JV3579  NGVD 29 (11/26/84)  182.410  (m)          598.46   (f) ADJUSTED    2 0
 JV3579
 JV3579.Superseded values are not recommended for survey control.
 JV3579
 JV3579.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3579.See file dsdata.pdf to determine how the superseded data were derived.
 JV3579
 JV3579_MARKER: DB = BENCH MARK DISK
 JV3579_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV3579_SP_SET: CULVERT
 JV3579_STAMPING: E 27 1958
 JV3579_MARK LOGO: CGS
 JV3579_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3579_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3579+SATELLITE: SATELLITE OBSERVATIONS - October 20, 2002
 JV3579
 JV3579  HISTORY     - Date     Condition        Report By
 JV3579  HISTORY     - 1958     MONUMENTED       CGS
 JV3579  HISTORY     - 1987     GOOD             USPSQD
 JV3579  HISTORY     - 20021020 GOOD             INDIV
 JV3579  HISTORY     - 20080208 MARK NOT FOUND   GEOCAC
 JV3579
 JV3579                          STATION DESCRIPTION
 JV3579
 JV3579'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3579'AT MOUNT LENA.
 JV3579'AT MOUNT LENA, 0.05 MILE SOUTHWEST ALONG SAN MAR ROAD FROM THE
 JV3579'MAIN ROAD THRU MOUNT LENA, IN THE TOP OF THE NORTHEAST END OF THE
 JV3579'NORTHWEST CONCRETE CULVERT, AND ABOUT 1 FOOT ABOVE THE LEVEL OF
 JV3579'THE ROAD.
 JV3579
 JV3579                          STATION RECOVERY (1987)
 JV3579
 JV3579'RECOVERY NOTE BY US POWER SQUADRON 1987 (WPG)
 JV3579'RECOVERED IN GOOD CONDITION.
 JV3579
 JV3579                          STATION RECOVERY (2002)
 JV3579
 JV3579'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (GEN)
 JV3579'RECOVERED AS DESCRIBED. HEADWALL OF CULVERT IN BAD SHAPE.
 JV3579
 JV3579                          STATION RECOVERY (2008)
 JV3579
 JV3579'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3579'LOCALS INDICATE THAT THE CULVERT WALL WAS REWORKED A FEW YEARS AGO.
 JV3579'THE CULVERT IS LOCATED ALONG MOUNT LENA ROAD, NOT SAN MAR ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0992 ***********************************************************************
 JV0992  DESIGNATION -  E 28
 JV0992  PID         -  JV0992
 JV0992  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0992  COUNTRY     -  US
 JV0992  USGS QUAD   -  BELTSVILLE (2016)
 JV0992
 JV0992                         *CURRENT SURVEY CONTROL
 JV0992  ______________________________________________________________________
 JV0992* NAD 83(1986) POSITION- 39 00 59.     (N) 076 57 51.     (W)   SCALED
 JV0992* NAVD 88 ORTHO HEIGHT -    68.89  (+/-2cm)      226.0   (feet) VERTCON3
 JV0992  ______________________________________________________________________
 JV0992  GEOID HEIGHT    -        -32.058 (meters)                     GEOID18
 JV0992  VERT ORDER      -  ? (See Below)
 JV0992
 JV0992.The horizontal coordinates were scaled from a map and have
 JV0992.an estimated accuracy of +/- 6 seconds.
 JV0992
 JV0992.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV0992.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV0992
 JV0992.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0992.GEOID18 height accuracy estimate available here.
 JV0992
 JV0992.The vertical order pertains to the NGVD 29 superseded value.
 JV0992
 JV0992.Click photographs - Photos may exist for this station.
 JV0992
 JV0992;                    North         East    Units  Estimated Accuracy
 JV0992;SPC MD       -   149,830.      403,100.      MT  (+/- 180 meters Scaled)
 JV0992
 JV0992_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ299204(NAD 83)
 JV0992
 JV0992                          SUPERSEDED SURVEY CONTROL
 JV0992
 JV0992  NGVD 29 (11/26/84)   69.104  (m)          226.72   (f) ADJUSTED       
 JV0992
 JV0992.Superseded values are not recommended for survey control.
 JV0992
 JV0992.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0992.See file dsdata.pdf to determine how the superseded data were derived.
 JV0992
 JV0992_MARKER: DB = BENCH MARK DISK
 JV0992_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV0992+WITH SETTING: PAVEMENT
 JV0992_SP_SET: MANHOLE
 JV0992_STAMPING: E 28 1958
 JV0992_MARK LOGO: CGS
 JV0992_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0992+STABILITY: SURFACE MOTION
 JV0992
 JV0992  HISTORY     - Date     Condition        Report By
 JV0992  HISTORY     - 1958     MONUMENTED       CGS
 JV0992
 JV0992                          STATION DESCRIPTION
 JV0992
 JV0992'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0992'0.5 MI N FROM HILLANDALE.
 JV0992'ABOUT 0.5 MILE NORTH ALONG STATE HIGHWAY 212 (RIGGS ROAD) FROM
 JV0992'THE WASHINGTON NATIONAL PARK AND CEMETERY, AT THE JUNCTION OF A
 JV0992'STREET LEADING EAST TO A NEW HOUSING DEVELOPMENT, ON THE TOP OF A
 JV0992'CONCRETE PLATFORM FOR A MAN-HOLE COVER, 74 FEET EAST OF THE
 JV0992'CENTER LINE OF THE HIGHWAY, 60 FEET EAST-SOUTHEAST OF POWER LINE
 JV0992'POLE NO. 856015, 21 1/2 FEET NORTH OF THE CENTER LINE OF THE
 JV0992'STREET AND ABOUT LEVEL WITH THE STREET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1118 ***********************************************************************
 HV1118  DESIGNATION -  E 28
 HV1118  PID         -  HV1118
 HV1118  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1118  COUNTRY     -  US
 HV1118  USGS QUAD   -  ANACOSTIA (2016)
 HV1118
 HV1118                         *CURRENT SURVEY CONTROL
 HV1118  ______________________________________________________________________
 HV1118* NAD 83(1986) POSITION- 38 49 03.     (N) 076 54 06.     (W)   SCALED
 HV1118* NAVD 88 ORTHO HEIGHT -    86.033 (meters)      282.26  (feet) ADJUSTED
 HV1118  ______________________________________________________________________
 HV1118  GEOID HEIGHT    -        -32.463 (meters)                     GEOID18
 HV1118  DYNAMIC HEIGHT  -         85.985 (meters)      282.10  (feet) COMP
 HV1118  MODELED GRAVITY -    980,069.4   (mgal)                       NAVD 88
 HV1118
 HV1118  VERT ORDER      -  SECOND    CLASS 0
 HV1118
 HV1118.The horizontal coordinates were scaled from a map and have
 HV1118.an estimated accuracy of +/- 6 seconds.
 HV1118
 HV1118.The orthometric height was determined by differential leveling and
 HV1118.adjusted by the NATIONAL GEODETIC SURVEY
 HV1118.in June 1991.
 HV1118
 HV1118.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1118.GEOID18 height accuracy estimate available here.
 HV1118
 HV1118.Click photographs - Photos may exist for this station.
 HV1118
 HV1118.The dynamic height is computed by dividing the NAVD 88
 HV1118.geopotential number by the normal gravity value computed on the
 HV1118.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1118.degrees latitude (g = 980.6199 gals.).
 HV1118
 HV1118.The modeled gravity was interpolated from observed gravity values.
 HV1118
 HV1118;                    North         East    Units  Estimated Accuracy
 HV1118;SPC MD       -   127,750.      408,540.      MT  (+/- 180 meters Scaled)
 HV1118
 HV1118_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH349982(NAD 83)
 HV1118
 HV1118                          SUPERSEDED SURVEY CONTROL
 HV1118
 HV1118  NGVD 29 (11/26/84)   86.280  (m)          283.07   (f) ADJUSTED    2 0
 HV1118
 HV1118.Superseded values are not recommended for survey control.
 HV1118
 HV1118.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1118.See file dsdata.pdf to determine how the superseded data were derived.
 HV1118
 HV1118_MARKER: DB = BENCH MARK DISK
 HV1118_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1118_STAMPING: E 28 1958
 HV1118_MARK LOGO: CGS
 HV1118_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1118+STABILITY: SURFACE MOTION
 HV1118
 HV1118  HISTORY     - Date     Condition        Report By
 HV1118  HISTORY     - 1958     MONUMENTED       CGS
 HV1118
 HV1118                          STATION DESCRIPTION
 HV1118
 HV1118'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1118'1.3 MI N FROM CAMP SPRINGS.
 HV1118'ABOUT 0.8 MILE NORTHEAST ALONG STATE HIGHWAY 337 FROM THE
 HV1118'INTERSECTION OF STATE HIGHWAY 5 AT CAMP SPRINGS, THENCE 0.5
 HV1118'MILE NORTHWEST ALONG AUTH ROAD, 24 FEET NORTHEAST OF THE CENTER
 HV1118'LINE OF AUTH ROAD, 22 FEET SOUTHEAST OF THE CENTER LINE OF ARMAND
 HV1118'AVENUE, 4 FEET SOUTH OF POWER LINE POLE NO. 830776, 1.5 FEET
 HV1118'NORTH OF A METAL WITNESS POST, ABOUT LEVEL WITH THE ROAD AND
 HV1118'SET IN THE TOP OF A CONCRETE POST PROJECTING 5 INCHES ABOVE
 HV1118'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0993 ***********************************************************************
 JV0993  DESIGNATION -  E 28 RESET
 JV0993  PID         -  JV0993
 JV0993  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0993  COUNTRY     -  US
 JV0993  USGS QUAD   -  BELTSVILLE (2016)
 JV0993
 JV0993                         *CURRENT SURVEY CONTROL
 JV0993  ______________________________________________________________________
 JV0993* NAD 83(1986) POSITION- 39 00 59.     (N) 076 57 51.     (W)   SCALED
 JV0993* NAVD 88 ORTHO HEIGHT -    68.890 (meters)      226.02  (feet) ADJUSTED
 JV0993  ______________________________________________________________________
 JV0993  GEOID HEIGHT    -        -32.058 (meters)                     GEOID18
 JV0993  DYNAMIC HEIGHT  -         68.853 (meters)      225.90  (feet) COMP
 JV0993  MODELED GRAVITY -    980,100.3   (mgal)                       NAVD 88
 JV0993
 JV0993  VERT ORDER      -  SECOND    CLASS 0
 JV0993
 JV0993.The horizontal coordinates were scaled from a map and have
 JV0993.an estimated accuracy of +/- 6 seconds.
 JV0993
 JV0993.The orthometric height was determined by differential leveling and
 JV0993.adjusted by the NATIONAL GEODETIC SURVEY
 JV0993.in June 1991.
 JV0993
 JV0993.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0993.GEOID18 height accuracy estimate available here.
 JV0993
 JV0993.Click photographs - Photos may exist for this station.
 JV0993
 JV0993.The dynamic height is computed by dividing the NAVD 88
 JV0993.geopotential number by the normal gravity value computed on the
 JV0993.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0993.degrees latitude (g = 980.6199 gals.).
 JV0993
 JV0993.The modeled gravity was interpolated from observed gravity values.
 JV0993
 JV0993;                    North         East    Units  Estimated Accuracy
 JV0993;SPC MD       -   149,830.      403,100.      MT  (+/- 180 meters Scaled)
 JV0993
 JV0993_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ299204(NAD 83)
 JV0993
 JV0993                          SUPERSEDED SURVEY CONTROL
 JV0993
 JV0993  NGVD 29 (??/??/??)   69.12   (m)          226.8    (f) RESET       3  
 JV0993
 JV0993.Superseded values are not recommended for survey control.
 JV0993
 JV0993.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0993.See file dsdata.pdf to determine how the superseded data were derived.
 JV0993
 JV0993_MARKER: DB = BENCH MARK DISK
 JV0993_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0993_STAMPING: E 28 RESET 1968
 JV0993_MARK LOGO: CGS
 JV0993_PROJECTION: FLUSH
 JV0993_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0993+STABILITY: SURFACE MOTION
 JV0993
 JV0993  HISTORY     - Date     Condition        Report By
 JV0993  HISTORY     - 1968     MONUMENTED       MDSRC
 JV0993
 JV0993                          STATION DESCRIPTION
 JV0993
 JV0993'DESCRIBED BY MD STATE ROADS COMM 1968
 JV0993'6 MI NW FROM COLLEGE PARK.
 JV0993'ABOUT 3.3 MILES WEST ALONG STATE HIGHWAY 193 FROM THE INTERSECTION
 JV0993'OF U.S. HIGHWAY 1 AND MARYLAND STATE HIGHWAY 193 AT COLLEGE PARK,
 JV0993'THENCE 2.7 MILES NORTH ALONG STATE HIGHWAY 212, AT A T JUNCTION
 JV0993'OF MUSKOGEE ROAD AND RIGGS ROAD, 92 FEET EAST OF THE CENTER LINE
 JV0993'OF RIGGS ROAD, 99.5 FEET WEST OF POWER LINE POLE 856016, 20
 JV0993'FEET SOUTH OF THE CENTER LINE OF MUSKOGEE ROAD, SET IN THE TOP OF
 JV0993'A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1119 ***********************************************************************
 HV1119  DESIGNATION -  E 28 RESET
 HV1119  PID         -  HV1119
 HV1119  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1119  COUNTRY     -  US
 HV1119  USGS QUAD   -  ANACOSTIA (2016)
 HV1119
 HV1119                         *CURRENT SURVEY CONTROL
 HV1119  ______________________________________________________________________
 HV1119* NAD 83(1986) POSITION- 38 49 01.70   (N) 076 54 05.38   (W)   HD_HELD1
 HV1119* NAVD 88 ORTHO HEIGHT -    85.86  (+/-2cm)      281.7   (feet) VERTCON3
 HV1119  ______________________________________________________________________
 HV1119  GEOID HEIGHT    -        -32.465 (meters)                     GEOID18
 HV1119  VERT ORDER      -  THIRD (See Below)
 HV1119
 HV1119.The horizontal coordinates were determined by differentially corrected
 HV1119.hand held GPS observations or other comparable positioning techniques
 HV1119.and have an estimated accuracy of +/- 3 meters.
 HV1119
 HV1119.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV1119.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV1119
 HV1119.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1119.GEOID18 height accuracy estimate available here.
 HV1119
 HV1119.The vertical order pertains to the NGVD 29 superseded value.
 HV1119
 HV1119.Click photographs - Photos may exist for this station.
 HV1119
 HV1119;                    North         East    Units  Estimated Accuracy
 HV1119;SPC MD       -   127,711.7     408,554.7     MT  (+/- 3 meters HH1 GPS) 
 HV1119
 HV1119_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3491698202(NAD 83)
 HV1119
 HV1119                          SUPERSEDED SURVEY CONTROL
 HV1119
 HV1119  NGVD 29 (??/??/??)   86.11   (m)          282.5    (f) RESET       3  
 HV1119
 HV1119.Superseded values are not recommended for survey control.
 HV1119
 HV1119.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1119.See file dsdata.pdf to determine how the superseded data were derived.
 HV1119
 HV1119_MARKER: DB = BENCH MARK DISK
 HV1119_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV1119_SP_SET: CURB
 HV1119_STAMPING: E 28 RESET 1962
 HV1119_MARK LOGO: CGS
 HV1119_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1119_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV1119+SATELLITE: SATELLITE OBSERVATIONS - August 01, 2013
 HV1119
 HV1119  HISTORY     - Date     Condition        Report By
 HV1119  HISTORY     - 1962     MONUMENTED       MDSRC
 HV1119  HISTORY     - 20130801 GOOD             WSSC
 HV1119
 HV1119                          STATION DESCRIPTION
 HV1119
 HV1119'DESCRIBED BY MD STATE ROADS COMM 1962
 HV1119'1.2 MI NW FROM CAMP SPRINGS.
 HV1119'ABOUT 0.8 MILE NORTHEAST ALONG MD. ROUTE 337 (ALLENTOWN ROAD)
 HV1119'FROM THE JUNCTION OF MD. ROUTE 5 AT CAMP SPRINGS, THENCE 0.45
 HV1119'MILE NORTHWEST ALONG AUTH ROAD, 20.5 FEET NORTHEAST OF THE
 HV1119'CENTERLINE OF AUTH ROAD, 108.2 FEET NORTHWEST OF THE CENTERLINE
 HV1119'OF CARSWELL TERRACE, 18.0 FEET NORTHWEST OF THE CENTERLINE
 HV1119'OF DRIVEWAY TO RESIDENCE OF RAY T. FUGATE, AND 19.3 FEET SOUTH
 HV1119'OF POLE 841742, AND SET FLUSH IN THE TOP OF A CONCRETE CURB.
 HV1119
 HV1119                          STATION RECOVERY (2013)
 HV1119
 HV1119'RECOVERY NOTE BY WASH SUBURB SAN COMM 2013 (TPB)
 HV1119'MARK FOUND IN GOOD CONDITION.  SET IN 8 IN. CURB (NORTH EAST R/W LINE
 HV1119'OF AUTH RD) NEAR THE SINGLE FAMILY HOUSE ADDRESS- 6102 AUTH RD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6506 ***********************************************************************
 JV6506  DESIGNATION -  E 29 RESET
 JV6506  PID         -  JV6506
 JV6506  STATE/COUNTY-  MD/BALTIMORE
 JV6506  COUNTRY     -  US
 JV6506  USGS QUAD   -  TOWSON (2016)
 JV6506
 JV6506                         *CURRENT SURVEY CONTROL
 JV6506  ______________________________________________________________________
 JV6506* NAD 83(1986) POSITION- 39 24 47.     (N) 076 36 01.     (W)   SCALED
 JV6506* NAVD 88 ORTHO HEIGHT -   119.46  (meters)      391.9   (feet) RESET
 JV6506  ______________________________________________________________________
 JV6506  GEOID HEIGHT    -        -32.566 (meters)                     GEOID18
 JV6506  VERT ORDER      -  THIRD
 JV6506
 JV6506.The horizontal coordinates were scaled from a map and have
 JV6506.an estimated accuracy of +/- 6 seconds.
 JV6506
 JV6506.The orthometric height was computed from unverified reset data.
 JV6506
 JV6506.No vertical observational check was made to the station.
 JV6506
 JV6506.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6506.GEOID18 height accuracy estimate available here.
 JV6506
 JV6506.Click photographs - Photos may exist for this station.
 JV6506
 JV6506;                    North         East    Units  Estimated Accuracy
 JV6506;SPC MD       -   193,940.      434,420.      MT  (+/- 180 meters Scaled)
 JV6506
 JV6506_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ622638(NAD 83)
 JV6506
 JV6506                          SUPERSEDED SURVEY CONTROL
 JV6506
 JV6506  NGVD 29 (11/18/05)  119.69   (m)          392.7    (f) RESET       3  
 JV6506
 JV6506.Superseded values are not recommended for survey control.
 JV6506
 JV6506.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6506.See file dsdata.pdf to determine how the superseded data were derived.
 JV6506
 JV6506_MARKER: DV = VERTICAL CONTROL DISK
 JV6506_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV6506_SP_SET: BRIDGE PIER
 JV6506_STAMPING: E 29 RESET 1988
 JV6506_MARK LOGO: NGS
 JV6506_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6506_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6506_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6506+SATELLITE: SATELLITE OBSERVATIONS - 1988
 JV6506
 JV6506  HISTORY     - Date     Condition        Report By
 JV6506  HISTORY     - 1988     MONUMENTED       NGS
 JV6506
 JV6506                          STATION DESCRIPTION
 JV6506
 JV6506'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 JV6506'THE MARK IS LOCATED ALONG THE SOUTH SIDE OF THE WEST BOUND LANE OF
 JV6506'INTERSTATE HIGHWAY 695 AND IN THE MEDIAN STRIP OF THE HIGHWAY.  IT IS
 JV6506'UNDER THE WEST SIDE AND DIRECTLY UNDER A OVERHEAD BRIDGE FOR STATE
 JV6506'HIGHWAY 146 (DULANEY VALLEY ROAD).  IT IS SET IN THE NORTH FACE OF THE
 JV6506'CENTER BARRIER WHICH IS ATTACHED TO THE MOST WESTERLY PIER OF THE
 JV6506'BRIDGE, 0.24 M (0.8 FT) NORTH OF THE NORTH FACE OF THE ROUND PIER,
 JV6506'0.73 M (2.4 FT) EAST OF THE WEST END OF THE OVERHEAD BRIDGE, 3.35 M
 JV6506'(11.0 FT) SOUTH OF THE MOST SOUTH EDGE OF THE CONCRETE LANES FOR WEST
 JV6506'BOUND INTERSTATE HIGHWAY 695, 0.61 M (2.0 FT) HIGHER THAN THE PAVED
 JV6506'SHOULDER OF THE ROAD AND 0.45 M (1.5 FT) BELOW THE TOP OF THE CONCRETE
 JV6506'MEDIAN DIVIDER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6507 ***********************************************************************
 JV6507  DESIGNATION -  E 3 RESET
 JV6507  PID         -  JV6507
 JV6507  STATE/COUNTY-  MD/CECIL
 JV6507  COUNTRY     -  US
 JV6507  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV6507
 JV6507                         *CURRENT SURVEY CONTROL
 JV6507  ______________________________________________________________________
 JV6507* NAD 83(1986) POSITION- 39 34 25.02   (N) 076 04 05.15   (W)   HD_HELD1
 JV6507* NAVD 88 ORTHO HEIGHT -    40.643 (meters)      133.34  (feet) ADJUSTED
 JV6507  ______________________________________________________________________
 JV6507  GEOID HEIGHT    -        -33.126 (meters)                     GEOID18
 JV6507  DYNAMIC HEIGHT  -         40.622 (meters)      133.27  (feet) COMP
 JV6507  MODELED GRAVITY -    980,125.7   (mgal)                       NAVD 88
 JV6507
 JV6507  VERT ORDER      -  FIRST     CLASS II
 JV6507
 JV6507.The horizontal coordinates were determined by differentially corrected
 JV6507.hand held GPS observations or other comparable positioning techniques
 JV6507.and have an estimated accuracy of +/- 3 meters.
 JV6507
 JV6507.The orthometric height was determined by differential leveling and
 JV6507.adjusted by the NATIONAL GEODETIC SURVEY
 JV6507.in July 2019.
 JV6507
 JV6507.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6507.GEOID18 height accuracy estimate available here.
 JV6507
 JV6507.Click photographs - Photos may exist for this station.
 JV6507
 JV6507.The dynamic height is computed by dividing the NAVD 88
 JV6507.geopotential number by the normal gravity value computed on the
 JV6507.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6507.degrees latitude (g = 980.6199 gals.).
 JV6507
 JV6507.The modeled gravity was interpolated from observed gravity values.
 JV6507
 JV6507;                    North         East    Units  Estimated Accuracy
 JV6507;SPC MD       -   212,097.1     480,072.0     MT  (+/- 3 meters HH1 GPS) 
 JV6507
 JV6507_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0826180979(NAD 83)
 JV6507
 JV6507                          SUPERSEDED SURVEY CONTROL
 JV6507
 JV6507  NAVD 88 (11/18/05)   40.651  (m)          133.37   (f) SUPERSEDED  3 0
 JV6507  NGVD 29 (11/18/05)   40.89   (m)          134.2    (f) RESET       3  
 JV6507
 JV6507.Superseded values are not recommended for survey control.
 JV6507
 JV6507.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6507.See file dsdata.pdf to determine how the superseded data were derived.
 JV6507
 JV6507_MARKER: DV = VERTICAL CONTROL DISK
 JV6507_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV6507_SP_SET: BRIDGE ABUTMENT
 JV6507_STAMPING: E 3 RESET 1989
 JV6507_MARK LOGO: NGS
 JV6507_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6507_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6507+SATELLITE: SATELLITE OBSERVATIONS - October 06, 2025
 JV6507
 JV6507  HISTORY     - Date     Condition        Report By
 JV6507  HISTORY     - 1989     MONUMENTED       NGS
 JV6507  HISTORY     - 20140530 GOOD             JARICE
 JV6507  HISTORY     - 20251006 GOOD             PROFLN
 JV6507
 JV6507                          STATION DESCRIPTION
 JV6507
 JV6507'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6507'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE HIGHWAY
 JV6507'222 JUST SOUTH-SOUTHWEST OF AIKIN, GO NORTH-NORTHEAST ON STATE HIGHWAY
 JV6507'222 FOR 0.5 KM (0.30 MI) TO THE SOUTH END OF A LARGE BRIDGE OVER THE
 JV6507'OHIO RAILROAD AND THE MARKER ON THE LEFT IN THE SOUTH END OF THE WEST
 JV6507'SIDEWALK.  THIS MARKER IS ALSO 2.4 KM (1.50 MI) SOUTH-SOUTHWEST OF A
 JV6507'POINT WHERE STATE HIGHWAY 222 PASSES OVER INTERSTATE HIGHWAY 95 AT
 JV6507'EXIT 93,   8.0 M (26.2 FT) WEST OF THE CENTER OF STATE HIGHWAY
 JV6507'222, 5.17 M (17.0 FT) NORTH-NORTHEAST OF THE MOST SOUTHERLY END OF THE
 JV6507'SIDEWALK, 0.87 M (2.9 FT) EAST OF THE EAST FACE OF THE WEST PARAPER
 JV6507'WALL, 0.35 M (1.1 FT) WEST OF THE WEST CURB ALONG THE ROAD AND 0.17 M
 JV6507'(0.6 FT) SOUTHEAST OF MOST SOUTHERLY EXPANSION JOINT ON THE BRIDGE,
 JV6507'AND 0.15 M (0.5 FT) HIGHER THAN THE ROAD WHERE IT CROSSES BRIDGE.
 JV6507
 JV6507                          STATION RECOVERY (2014)
 JV6507
 JV6507'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JV6507'RECOVERED AS DESCRIBED.
 JV6507
 JV6507                          STATION RECOVERY (2025)
 JV6507
 JV6507'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV6507'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1128 ***********************************************************************
 JV1128  DESIGNATION -  E 30
 JV1128  PID         -  JV1128
 JV1128  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1128  COUNTRY     -  US
 JV1128  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1128
 JV1128                         *CURRENT SURVEY CONTROL
 JV1128  ______________________________________________________________________
 JV1128* NAD 83(1986) POSITION- 39 17 31.     (N) 076 35 38.     (W)   SCALED
 JV1128* NAVD 88 ORTHO HEIGHT -    20.727 (meters)       68.00  (feet) ADJUSTED
 JV1128  ______________________________________________________________________
 JV1128  GEOID HEIGHT    -        -32.771 (meters)                     GEOID18
 JV1128  DYNAMIC HEIGHT  -         20.716 (meters)       67.97  (feet) COMP
 JV1128  MODELED GRAVITY -    980,103.7   (mgal)                       NAVD 88
 JV1128
 JV1128  VERT ORDER      -  FIRST     CLASS I
 JV1128
 JV1128.The horizontal coordinates were scaled from a map and have
 JV1128.an estimated accuracy of +/- 6 seconds.
 JV1128
 JV1128.The orthometric height was determined by differential leveling and
 JV1128.adjusted by the NATIONAL GEODETIC SURVEY
 JV1128.in June 1991.
 JV1128
 JV1128.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1128.GEOID18 height accuracy estimate available here.
 JV1128
 JV1128.Click photographs - Photos may exist for this station.
 JV1128
 JV1128.The dynamic height is computed by dividing the NAVD 88
 JV1128.geopotential number by the normal gravity value computed on the
 JV1128.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1128.degrees latitude (g = 980.6199 gals.).
 JV1128
 JV1128.The modeled gravity was interpolated from observed gravity values.
 JV1128
 JV1128;                    North         East    Units  Estimated Accuracy
 JV1128;SPC MD       -   180,490.      435,030.      MT  (+/- 180 meters Scaled)
 JV1128
 JV1128_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ625503(NAD 83)
 JV1128
 JV1128                          SUPERSEDED SURVEY CONTROL
 JV1128
 JV1128  NGVD 29 (11/26/84)   20.970  (m)           68.80   (f) ADJUSTED    1 1
 JV1128
 JV1128.Superseded values are not recommended for survey control.
 JV1128
 JV1128.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1128.See file dsdata.pdf to determine how the superseded data were derived.
 JV1128
 JV1128_MARKER: DB = BENCH MARK DISK
 JV1128_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1128_STAMPING: E 30 1959
 JV1128_MARK LOGO: CGS
 JV1128_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1128+STABILITY: SURFACE MOTION
 JV1128
 JV1128  HISTORY     - Date     Condition        Report By
 JV1128  HISTORY     - 1959     MONUMENTED       CGS
 JV1128  HISTORY     - 1971     GOOD             NGS
 JV1128
 JV1128                          STATION DESCRIPTION
 JV1128
 JV1128'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV1128'AT BALTIMORE.
 JV1128'AT BALTIMORE, NEAR THE INTERSECTION OF EAST BALTIMORE AND NORTH
 JV1128'BROADWAY STREETS, IN AN ISLAND BETWEEN THE TWO TRAFFIC
 JV1128'LANES OF NORTH BROADWAY STREET, 76.2 FEET NORTH OF THE NORTH CURB
 JV1128'OF EAST BALTIMORE STREET, 10.8 FEET WEST OF THE WEST CURB OF THE
 JV1128'EAST LANES OF NORTH BROADWAY STREET, 0.8 FOOT EAST OF THE SOUTH
 JV1128'STEP, 13.0 FEET SOUTH OF THE SOUTHEAST CORNER OF THE LATROBE
 JV1128'MONUMENT, AND SET IN THE TOP OF A CONCRETE POST WHICH IS 1 FOOT
 JV1128'BELOW THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0412 ***********************************************************************
 JV0412  DESIGNATION -  E 31
 JV0412  PID         -  JV0412
 JV0412  STATE/COUNTY-  MD/HARFORD
 JV0412  COUNTRY     -  US
 JV0412  USGS QUAD   -  EDGEWOOD (2016)
 JV0412
 JV0412                         *CURRENT SURVEY CONTROL
 JV0412  ______________________________________________________________________
 JV0412* NAD 83(1986) POSITION- 39 25 59.     (N) 076 21 41.     (W)   SCALED
 JV0412* NAVD 88 ORTHO HEIGHT -    39.546 (meters)      129.74  (feet) ADJUSTED
 JV0412  ______________________________________________________________________
 JV0412  GEOID HEIGHT    -        -33.003 (meters)                     GEOID18
 JV0412  DYNAMIC HEIGHT  -         39.525 (meters)      129.67  (feet) COMP
 JV0412  MODELED GRAVITY -    980,102.0   (mgal)                       NAVD 88
 JV0412
 JV0412  VERT ORDER      -  FIRST     CLASS I
 JV0412
 JV0412.The horizontal coordinates were scaled from a map and have
 JV0412.an estimated accuracy of +/- 6 seconds.
 JV0412
 JV0412.The orthometric height was determined by differential leveling and
 JV0412.adjusted by the NATIONAL GEODETIC SURVEY
 JV0412.in June 1991.
 JV0412
 JV0412.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0412.GEOID18 height accuracy estimate available here.
 JV0412
 JV0412.Click photographs - Photos may exist for this station.
 JV0412
 JV0412.The dynamic height is computed by dividing the NAVD 88
 JV0412.geopotential number by the normal gravity value computed on the
 JV0412.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0412.degrees latitude (g = 980.6199 gals.).
 JV0412
 JV0412.The modeled gravity was interpolated from observed gravity values.
 JV0412
 JV0412;                    North         East    Units  Estimated Accuracy
 JV0412;SPC MD       -   196,280.      454,980.      MT  (+/- 180 meters Scaled)
 JV0412
 JV0412_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ828657(NAD 83)
 JV0412
 JV0412                          SUPERSEDED SURVEY CONTROL
 JV0412
 JV0412  NGVD 29 (11/26/84)   39.791  (m)          130.55   (f) ADJUSTED    1 1
 JV0412
 JV0412.Superseded values are not recommended for survey control.
 JV0412
 JV0412.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0412.See file dsdata.pdf to determine how the superseded data were derived.
 JV0412
 JV0412_MARKER: DB = BENCH MARK DISK
 JV0412_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0412_STAMPING: E 31 1959
 JV0412_MARK LOGO: CGS
 JV0412_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0412+STABILITY: SURFACE MOTION
 JV0412_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0412+SATELLITE: SATELLITE OBSERVATIONS - May 15, 2005
 JV0412
 JV0412  HISTORY     - Date     Condition        Report By
 JV0412  HISTORY     - 1959     MONUMENTED       CGS
 JV0412  HISTORY     - 1971     GOOD             NGS
 JV0412  HISTORY     - 1991     GOOD             USPSQD
 JV0412  HISTORY     - 20020602 GOOD             USPSQD
 JV0412  HISTORY     - 20050515 GOOD             USPSQD
 JV0412
 JV0412                          STATION DESCRIPTION
 JV0412
 JV0412'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0412'1.2 MI W FROM JOPPA.
 JV0412'ABOUT 1.25 MILES WEST ALONG STATE HIGHWAY 7 FROM THE TRINITY
 JV0412'LUTHERAN CHURCH AND CEMETERY AT JOPPA, 87 FEET EAST OF THE CENTER
 JV0412'OF THE INTERSECTION OF THE HIGHWAY AND OLD JOPPA ROAD, 29 FEET
 JV0412'NORTH OF THE CENTER LINE OF THE HIGHWAY, 46 FEET EAST OF POWER
 JV0412'POLE NUMBER 56746, 29 FEET EAST OF A 36-INCH OAK TREE, 33 1/2
 JV0412'FEET WEST OF A 36-INCH OAK TREE, 1 FOOT NORTH OF A FENCE, 1.5
 JV0412'FEET EAST OF A METAL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY,
 JV0412'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES.
 JV0412
 JV0412                          STATION RECOVERY (1991)
 JV0412
 JV0412'RECOVERY NOTE BY US POWER SQUADRON 1991 (RDB)
 JV0412'RECOVERED IN GOOD CONDITION.
 JV0412
 JV0412                          STATION RECOVERY (2002)
 JV0412
 JV0412'RECOVERY NOTE BY US POWER SQUADRON 2002 (TB)
 JV0412'RECOVERED IN GOOD CONDITION.
 JV0412
 JV0412                          STATION RECOVERY (2005)
 JV0412
 JV0412'RECOVERY NOTE BY US POWER SQUADRON 2005 (JJH)
 JV0412'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2176 ***********************************************************************
 JV2176  DESIGNATION -  E 34
 JV2176  PID         -  JV2176
 JV2176  STATE/COUNTY-  MD/MONTGOMERY
 JV2176  COUNTRY     -  US
 JV2176  USGS QUAD   -  KENSINGTON (2016)
 JV2176
 JV2176                         *CURRENT SURVEY CONTROL
 JV2176  ______________________________________________________________________
 JV2176* NAD 83(1986) POSITION- 39 03 37.     (N) 077 07 06.     (W)   SCALED
 JV2176* NAVD 88 ORTHO HEIGHT -   116.213 (meters)      381.28  (feet) ADJUSTED
 JV2176  ______________________________________________________________________
 JV2176  GEOID HEIGHT    -        -31.777 (meters)                     GEOID18
 JV2176  DYNAMIC HEIGHT  -        116.151 (meters)      381.07  (feet) COMP
 JV2176  MODELED GRAVITY -    980,098.3   (mgal)                       NAVD 88
 JV2176
 JV2176  VERT ORDER      -  FIRST     CLASS II
 JV2176
 JV2176.The horizontal coordinates were scaled from a map and have
 JV2176.an estimated accuracy of +/- 6 seconds.
 JV2176
 JV2176.The orthometric height was determined by differential leveling and
 JV2176.adjusted by the NATIONAL GEODETIC SURVEY
 JV2176.in June 1991.
 JV2176
 JV2176.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2176.GEOID18 height accuracy estimate available here.
 JV2176
 JV2176.Click photographs - Photos may exist for this station.
 JV2176
 JV2176.The dynamic height is computed by dividing the NAVD 88
 JV2176.geopotential number by the normal gravity value computed on the
 JV2176.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2176.degrees latitude (g = 980.6199 gals.).
 JV2176
 JV2176.The modeled gravity was interpolated from observed gravity values.
 JV2176
 JV2176;                    North         East    Units  Estimated Accuracy
 JV2176;SPC MD       -   154,700.      389,760.      MT  (+/- 180 meters Scaled)
 JV2176
 JV2176_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ167256(NAD 83)
 JV2176
 JV2176                          SUPERSEDED SURVEY CONTROL
 JV2176
 JV2176  NGVD 29 (11/26/84)  116.433  (m)          382.00   (f) ADJUSTED    1 2
 JV2176
 JV2176.Superseded values are not recommended for survey control.
 JV2176
 JV2176.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2176.See file dsdata.pdf to determine how the superseded data were derived.
 JV2176
 JV2176_MARKER: DB = BENCH MARK DISK
 JV2176_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2176_SP_SET: SIGNAL TOWER
 JV2176_STAMPING: E 34 1938
 JV2176_MARK LOGO: CGS
 JV2176_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2176
 JV2176  HISTORY     - Date     Condition        Report By
 JV2176  HISTORY     - 1938     MONUMENTED       CGS
 JV2176
 JV2176                          STATION DESCRIPTION
 JV2176
 JV2176'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2176'0.7 MI N FROM RANDOLPH.
 JV2176'ON THE METROPOLOTAN BRANCH OF THE B. AND O.R.R.  0.7 MILE NORTH
 JV2176'OF RANDOLPH STATION SET IN THE SOUTHWEST CORNER OF SIGNAL TOWER
 JV2176'W14-22.  EAST 4 FT FROM THE CENTER LINE OF THE NORTHBOUND TRACK.
 JV2176'6 IN ABOVE THE LEVEL OF THE RAILS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2177 ***********************************************************************
 JV2177  DESIGNATION -  E 34 RESET 1966 MDSRC
 JV2177  PID         -  JV2177
 JV2177  STATE/COUNTY-  MD/MONTGOMERY
 JV2177  COUNTRY     -  US
 JV2177  USGS QUAD   -  KENSINGTON (2016)
 JV2177
 JV2177                         *CURRENT SURVEY CONTROL
 JV2177  ______________________________________________________________________
 JV2177* NAD 83(1986) POSITION- 39 03 37.     (N) 077 07 05.     (W)   SCALED
 JV2177* NAVD 88 ORTHO HEIGHT -   115.958 (meters)      380.44  (feet) ADJUSTED
 JV2177  ______________________________________________________________________
 JV2177  GEOID HEIGHT    -        -31.777 (meters)                     GEOID18
 JV2177  DYNAMIC HEIGHT  -        115.897 (meters)      380.24  (feet) COMP
 JV2177  MODELED GRAVITY -    980,098.3   (mgal)                       NAVD 88
 JV2177
 JV2177  VERT ORDER      -  FIRST     CLASS II
 JV2177
 JV2177.The horizontal coordinates were scaled from a map and have
 JV2177.an estimated accuracy of +/- 6 seconds.
 JV2177
 JV2177.The orthometric height was determined by differential leveling and
 JV2177.adjusted by the NATIONAL GEODETIC SURVEY
 JV2177.in June 1991.
 JV2177
 JV2177.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2177.GEOID18 height accuracy estimate available here.
 JV2177
 JV2177.Click photographs - Photos may exist for this station.
 JV2177
 JV2177.The dynamic height is computed by dividing the NAVD 88
 JV2177.geopotential number by the normal gravity value computed on the
 JV2177.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2177.degrees latitude (g = 980.6199 gals.).
 JV2177
 JV2177.The modeled gravity was interpolated from observed gravity values.
 JV2177
 JV2177;                    North         East    Units  Estimated Accuracy
 JV2177;SPC MD       -   154,700.      389,780.      MT  (+/- 180 meters Scaled)
 JV2177
 JV2177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ167256(NAD 83)
 JV2177
 JV2177                          SUPERSEDED SURVEY CONTROL
 JV2177
 JV2177  NGVD 29 (??/??/??)  116.15   (m)          381.1    (f) RESET       3  
 JV2177
 JV2177.Superseded values are not recommended for survey control.
 JV2177
 JV2177.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2177.See file dsdata.pdf to determine how the superseded data were derived.
 JV2177
 JV2177_MARKER: DD = SURVEY DISK
 JV2177_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2177_STAMPING: E 34 RESET 1966
 JV2177_MARK LOGO: MDSRC
 JV2177_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2177+STABILITY: SURFACE MOTION
 JV2177
 JV2177  HISTORY     - Date     Condition        Report By
 JV2177  HISTORY     - 1966     MONUMENTED       MDSRC
 JV2177  HISTORY     - 1979     GOOD             NGS
 JV2177  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2177
 JV2177                          STATION DESCRIPTION
 JV2177
 JV2177'DESCRIBED BY MD STATE ROADS COMM 1966
 JV2177'AT ROCKVILLE.
 JV2177'AT ROCKVILLE, ABOUT 0.5 MILE NORTH ALONG ROCKVILLE PIKE (MD. 355)
 JV2177'FROM ITS INTERSECTION WITH RANDOLPH ROAD TO THOMPSON AVENUE, THENCE
 JV2177'0.16 MILE EAST ALONG THOMPSON AVENUE TO THE BALTIMORE AND OHIO
 JV2177'RAILROAD TRACKS, 19 FEET NORTHEAST OF POWER POLE P.E.P. 637767,
 JV2177'10.5 FEET SOUTHWEST OF THE CENTER OF THE SOUTHBOUND TRACKS, 3.6
 JV2177'FEET SOUTHEAST OF SINGAL TOWER, 3.6 FEET NORTHWEST OF SIGNAL
 JV2177'TOWERS POWER BOX AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 JV2177'1-INCH.
 JV2177
 JV2177                          STATION RECOVERY (1979)
 JV2177
 JV2177'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2177'RECOVERED IN GOOD CONDITION.
 JV2177
 JV2177                          STATION RECOVERY (1987)
 JV2177
 JV2177'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2177'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4069 ***********************************************************************
 JV4069  DESIGNATION -  E 34 RESET 1979
 JV4069  PID         -  JV4069
 JV4069  STATE/COUNTY-  MD/MONTGOMERY
 JV4069  COUNTRY     -  US
 JV4069  USGS QUAD   -  KENSINGTON (2016)
 JV4069
 JV4069                         *CURRENT SURVEY CONTROL
 JV4069  ______________________________________________________________________
 JV4069* NAD 83(1986) POSITION- 39 03 37.     (N) 077 07 05.     (W)   SCALED
 JV4069* NAVD 88 ORTHO HEIGHT -   118.23  (+/-2cm)      387.9   (feet) VERTCON3
 JV4069  ______________________________________________________________________
 JV4069  GEOID HEIGHT    -        -31.777 (meters)                     GEOID18
 JV4069  VERT ORDER      -  THIRD (See Below)
 JV4069
 JV4069.The horizontal coordinates were scaled from a map and have
 JV4069.an estimated accuracy of +/- 6 seconds.
 JV4069
 JV4069.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4069.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4069
 JV4069.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4069.GEOID18 height accuracy estimate available here.
 JV4069
 JV4069.The vertical order pertains to the NGVD 29 superseded value.
 JV4069
 JV4069.Click photographs - Photos may exist for this station.
 JV4069
 JV4069;                    North         East    Units  Estimated Accuracy
 JV4069;SPC MD       -   154,700.      389,780.      MT  (+/- 180 meters Scaled)
 JV4069
 JV4069_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ167256(NAD 83)
 JV4069
 JV4069                          SUPERSEDED SURVEY CONTROL
 JV4069
 JV4069  NGVD 29 (??/??/??)  118.45   (m)          388.6    (f) RESET       3  
 JV4069
 JV4069.Superseded values are not recommended for survey control.
 JV4069
 JV4069.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4069.See file dsdata.pdf to determine how the superseded data were derived.
 JV4069
 JV4069_MARKER: DV = VERTICAL CONTROL DISK
 JV4069_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV4069_SP_SET: BRIDGE ABUTMENT
 JV4069_STAMPING: E 34 RESET 1979
 JV4069_MARK LOGO: NGS
 JV4069_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV4069
 JV4069  HISTORY     - Date     Condition        Report By
 JV4069  HISTORY     - 1979     MONUMENTED       NGS
 JV4069  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV4069
 JV4069                          STATION DESCRIPTION
 JV4069
 JV4069'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV4069'AT ROCKVILLE.
 JV4069'LOCATED IN THE NORTHEAST ABUTMENT OF A LARGE BRIDGE WHERE TWINBROOK
 JV4069'PARKWAY CROSSES THE METRO SYSTEM TRACKS IN ROCKVILLE, 17.6 FT
 JV4069'NORTHEAST OF THE MOST NORTHEAST TRACK, 10.4 FEET EAST OF A TELEPHONE
 JV4069'POLE, 0.8 FOOT NORTHWEST OF THE MOST NORTHWEST PILLER OF THE BRIDGE
 JV4069'BASE AND 0.5 FOOT SOUTHEAST OF THE MOST NORTHWEST EDGE OF THE ABUTMENT
 JV4069
 JV4069                          STATION RECOVERY (1987)
 JV4069
 JV4069'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV4069'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3179 ***********************************************************************
 JV3179  DESIGNATION -  E 35
 JV3179  PID         -  JV3179
 JV3179  STATE/COUNTY-  MD/FREDERICK
 JV3179  COUNTRY     -  US
 JV3179  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3179
 JV3179                         *CURRENT SURVEY CONTROL
 JV3179  ______________________________________________________________________
 JV3179* NAD 83(1986) POSITION- 39 16 20.8    (N) 077 31 54.0    (W)   HD_HELD2
 JV3179* NAVD 88 ORTHO HEIGHT -    70.543 (meters)      231.44  (feet) ADJUSTED
 JV3179  ______________________________________________________________________
 JV3179  GEOID HEIGHT    -        -32.703 (meters)                     GEOID18
 JV3179  DYNAMIC HEIGHT  -         70.505 (meters)      231.32  (feet) COMP
 JV3179  MODELED GRAVITY -    980,083.3   (mgal)                       NAVD 88
 JV3179
 JV3179  VERT ORDER      -  FIRST     CLASS II
 JV3179
 JV3179.The horizontal coordinates were established by autonomous hand held GPS
 JV3179.observations and have an estimated accuracy of +/- 10 meters.
 JV3179
 JV3179.The orthometric height was determined by differential leveling and
 JV3179.adjusted by the NATIONAL GEODETIC SURVEY
 JV3179.in June 1991.
 JV3179
 JV3179.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3179.GEOID18 height accuracy estimate available here.
 JV3179
 JV3179.Click photographs - Photos may exist for this station.
 JV3179
 JV3179.The dynamic height is computed by dividing the NAVD 88
 JV3179.geopotential number by the normal gravity value computed on the
 JV3179.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3179.degrees latitude (g = 980.6199 gals.).
 JV3179
 JV3179.The modeled gravity was interpolated from observed gravity values.
 JV3179
 JV3179;                    North         East    Units  Estimated Accuracy
 JV3179;SPC MD       -   178,385.      354,122.      MT  (+/- 10 meters HH2 GPS)
 JV3179
 JV3179_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8160750066(NAD 83)
 JV3179
 JV3179                          SUPERSEDED SURVEY CONTROL
 JV3179
 JV3179  NGVD 29 (11/26/84)   70.750  (m)          232.12   (f) ADJUSTED    1 2
 JV3179
 JV3179.Superseded values are not recommended for survey control.
 JV3179
 JV3179.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3179.See file dsdata.pdf to determine how the superseded data were derived.
 JV3179
 JV3179_MARKER: DB = BENCH MARK DISK
 JV3179_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV3179_SP_SET: HEADWALL
 JV3179_STAMPING: E 35 1938
 JV3179_MARK LOGO: CGS
 JV3179_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3179_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3179+STABILITY: SURFACE MOTION
 JV3179_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3179+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 JV3179
 JV3179  HISTORY     - Date     Condition        Report By
 JV3179  HISTORY     - 1938     MONUMENTED       CGS
 JV3179  HISTORY     - 1979     GOOD             NGS
 JV3179  HISTORY     - 19950323 GOOD             NGS
 JV3179  HISTORY     - 20100314 GOOD             GEOCAC
 JV3179
 JV3179                          STATION DESCRIPTION
 JV3179
 JV3179'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV3179'AT POINT OF ROCKS.
 JV3179'AT POINT OF ROCKS, FREDERICK COUNTY, ON THE BALTIMORE AND OHIO
 JV3179'RAILROAD, 700 FEET SOUTHEAST OF THE STATION, 400 FEET NORTHWEST
 JV3179'OF THE SWITCH TO THE ADAMSTOWN AND BALTIMORE TRACK, 14 FEET
 JV3179'SOUTHWEST OF THE SWITCH-CONTROL PIPE CONDUITS, AT BRIDGE 43-A, IN
 JV3179'THE TOP OF THE SOUTH END OF THE NORTHWEST PIER, 20 FEET SOUTHWEST
 JV3179'OF THE CENTER LINE OF THE SOUTH-BOUND TRACK, AND 1 FOOT BELOW
 JV3179'THE LEVEL OF THE RAILS.  A STANDARD DISK, STAMPED E 35 1938.
 JV3179
 JV3179                          STATION RECOVERY (1979)
 JV3179
 JV3179'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3179'RECOVERED IN GOOD CONDITION.
 JV3179
 JV3179                          STATION RECOVERY (1995)
 JV3179
 JV3179'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (GAS)
 JV3179'0.2 KM (0.10 MI) SOUTHEASTERLY ALONG THE CHESSIE SYSTEMS RAILROAD FROM
 JV3179'THE STATION IN POINT OF ROCKS, IN TOP OF AND 0.8 M (2.6 FT) NORTHWEST
 JV3179'OF THE SOUTHEAST END OF THE SOUTHWEST CONCRETE HEADWALL OF A CULVERT
 JV3179'UNDER THE RAILROAD, 4.5 M (14.8 FT) SOUTHWEST OF THE NEAR RAIL, AND
 JV3179'0.8 M (2.6 FT) BELOW THE LEVEL OF THE TRACKS.
 JV3179
 JV3179                          STATION RECOVERY (2010)
 JV3179
 JV3179'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV3179'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1400 ***********************************************************************
 JV1400  DESIGNATION -  E 36
 JV1400  PID         -  JV1400
 JV1400  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1400  COUNTRY     -  US
 JV1400  USGS QUAD   -  ODENTON (2016)
 JV1400
 JV1400                         *CURRENT SURVEY CONTROL
 JV1400  ______________________________________________________________________
 JV1400* NAD 83(1986) POSITION- 39 03 35.     (N) 076 37 40.     (W)   SCALED
 JV1400* NAVD 88 ORTHO HEIGHT -    30.555 (meters)      100.25  (feet) ADJUSTED
 JV1400  ______________________________________________________________________
 JV1400  GEOID HEIGHT    -        -32.895 (meters)                     GEOID18
 JV1400  DYNAMIC HEIGHT  -         30.538 (meters)      100.19  (feet) COMP
 JV1400  MODELED GRAVITY -    980,079.1   (mgal)                       NAVD 88
 JV1400
 JV1400  VERT ORDER      -  FIRST     CLASS II
 JV1400
 JV1400.The horizontal coordinates were scaled from a map and have
 JV1400.an estimated accuracy of +/- 6 seconds.
 JV1400
 JV1400.The orthometric height was determined by differential leveling and
 JV1400.adjusted by the NATIONAL GEODETIC SURVEY
 JV1400.in June 1991.
 JV1400
 JV1400.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1400.GEOID18 height accuracy estimate available here.
 JV1400
 JV1400.Click photographs - Photos may exist for this station.
 JV1400
 JV1400.The dynamic height is computed by dividing the NAVD 88
 JV1400.geopotential number by the normal gravity value computed on the
 JV1400.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1400.degrees latitude (g = 980.6199 gals.).
 JV1400
 JV1400.The modeled gravity was interpolated from observed gravity values.
 JV1400
 JV1400;                    North         East    Units  Estimated Accuracy
 JV1400;SPC MD       -   154,700.      432,220.      MT  (+/- 180 meters Scaled)
 JV1400
 JV1400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ591246(NAD 83)
 JV1400
 JV1400                          SUPERSEDED SURVEY CONTROL
 JV1400
 JV1400  NGVD 29 (11/26/84)   30.792  (m)          101.02   (f) ADJUSTED    1 2
 JV1400
 JV1400.Superseded values are not recommended for survey control.
 JV1400
 JV1400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1400.See file dsdata.pdf to determine how the superseded data were derived.
 JV1400
 JV1400_MARKER: DB = BENCH MARK DISK
 JV1400_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1400_SP_SET: CULVERT
 JV1400_STAMPING: E 36 1938
 JV1400_MARK LOGO: CGS
 JV1400_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1400
 JV1400  HISTORY     - Date     Condition        Report By
 JV1400  HISTORY     - 1938     MONUMENTED       CGS
 JV1400
 JV1400                          STATION DESCRIPTION
 JV1400
 JV1400'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV1400'1.4 MI NE FROM MILLERSVILLE.
 JV1400'1.4 MILES NORTHEAST ALONG STATE HIGHWAY 3 FROM THE POST OFFICE
 JV1400'AT MILLERSVILLE, ANNE ARUNDEL COUNTY, ABOUT 0.6 MILE NORTHWEST
 JV1400'OF GOTT, AT SEVERNS CROSSROADS (INTERSECTION OF STATE HIGHWAYS 3
 JV1400'AND 178), 20 FEET SOUTH OF THE CENTER LINE OF STATE HIGHWAY 178,
 JV1400'15 FEET WEST OF THE CENTER LINE OF STATE HIGHWAY 3, 15 FEET EAST
 JV1400'OF HIGHWAY MILEAGE 13.8, AND IN THE TOP OF THE WEST HEAD WALL OF
 JV1400'A DOUBLE-WING CULVERT.  A STANDARD DISK, STAMPED E 36 1938.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0952 ***********************************************************************
 HV0952  DESIGNATION -  E 37
 HV0952  PID         -  HV0952
 HV0952  STATE/COUNTY-  MD/CALVERT
 HV0952  COUNTRY     -  US
 HV0952  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0952
 HV0952                         *CURRENT SURVEY CONTROL
 HV0952  ______________________________________________________________________
 HV0952* NAD 83(1986) POSITION- 38 30 35.     (N) 076 33 52.     (W)   SCALED
 HV0952* NAVD 88 ORTHO HEIGHT -    47.156 (meters)      154.71  (feet) ADJUSTED
 HV0952  ______________________________________________________________________
 HV0952  GEOID HEIGHT    -        -33.953 (meters)                     GEOID18
 HV0952  DYNAMIC HEIGHT  -         47.128 (meters)      154.62  (feet) COMP
 HV0952  MODELED GRAVITY -    980,022.0   (mgal)                       NAVD 88
 HV0952
 HV0952  VERT ORDER      -  FIRST     CLASS II
 HV0952
 HV0952.The horizontal coordinates were scaled from a map and have
 HV0952.an estimated accuracy of +/- 6 seconds.
 HV0952
 HV0952.The orthometric height was determined by differential leveling and
 HV0952.adjusted by the NATIONAL GEODETIC SURVEY
 HV0952.in June 1991.
 HV0952
 HV0952.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0952.GEOID18 height accuracy estimate available here.
 HV0952
 HV0952.Click photographs - Photos may exist for this station.
 HV0952
 HV0952.The dynamic height is computed by dividing the NAVD 88
 HV0952.geopotential number by the normal gravity value computed on the
 HV0952.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0952.degrees latitude (g = 980.6199 gals.).
 HV0952
 HV0952.The modeled gravity was interpolated from observed gravity values.
 HV0952
 HV0952;                    North         East    Units  Estimated Accuracy
 HV0952;SPC MD       -    93,670.      437,990.      MT  (+/- 180 meters Scaled)
 HV0952
 HV0952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH635635(NAD 83)
 HV0952
 HV0952                          SUPERSEDED SURVEY CONTROL
 HV0952
 HV0952  NGVD 29 (11/26/84)   47.444  (m)          155.66   (f) ADJUSTED    1 2
 HV0952
 HV0952.Superseded values are not recommended for survey control.
 HV0952
 HV0952.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0952.See file dsdata.pdf to determine how the superseded data were derived.
 HV0952
 HV0952_MARKER: DB = BENCH MARK DISK
 HV0952_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0952_STAMPING: E 37 1941
 HV0952_MARK LOGO: CGS
 HV0952_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0952+STABILITY: SURFACE MOTION
 HV0952
 HV0952  HISTORY     - Date     Condition        Report By
 HV0952  HISTORY     - 1941     MONUMENTED       CGS
 HV0952  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0952  HISTORY     - 19950625 MARK NOT FOUND   USPSQD
 HV0952
 HV0952                          STATION DESCRIPTION
 HV0952
 HV0952'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0952'2.2 MI SE FROM PRINCE FREDERICK.
 HV0952'2.2 MILES SOUTHEAST ALONG STATE HIGHWAY 2 FROM THE POST OFFICE
 HV0952'AT PRINCE FREDERICK, CALVERT COUNTY, AT THE JUNCTION OF A ROAD
 HV0952'LEADING WEST TO BOWENS, 53 FEET SOUTH OF THE CENTER LINE OF THE
 HV0952'ROAD, 44 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 31 FEET WEST
 HV0952'OF THE CENTER OF THE WEST END OF A CONCRET CULVERT, AND 0.5
 HV0952'FOOT NORTH OF A WHITE WOODEN WITNESS POST.  A STANDARD DISK,
 HV0952'STAMPED E 37 1941 AND SET IN THE TOP OF A CONCRETE POST.
 HV0952
 HV0952                          STATION RECOVERY (1971)
 HV0952
 HV0952'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0952'MARK NOT FOUND.
 HV0952
 HV0952                          STATION RECOVERY (1995)
 HV0952
 HV0952'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0952'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0315 ***********************************************************************
 HV0315  DESIGNATION -  E 38
 HV0315  PID         -  HV0315
 HV0315  STATE/COUNTY-  MD/ST MARYS
 HV0315  COUNTRY     -  US
 HV0315  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV0315
 HV0315                         *CURRENT SURVEY CONTROL
 HV0315  ______________________________________________________________________
 HV0315* NAD 83(1986) POSITION- 38 14 58.     (N) 076 29 19.     (W)   SCALED
 HV0315* NAVD 88 ORTHO HEIGHT -    25.377 (meters)       83.26  (feet) ADJUSTED
 HV0315  ______________________________________________________________________
 HV0315  GEOID HEIGHT    -        -34.434 (meters)                     GEOID18
 HV0315  DYNAMIC HEIGHT  -         25.361 (meters)       83.21  (feet) COMP
 HV0315  MODELED GRAVITY -    980,007.2   (mgal)                       NAVD 88
 HV0315
 HV0315  VERT ORDER      -  FIRST     CLASS II
 HV0315
 HV0315.The horizontal coordinates were scaled from a map and have
 HV0315.an estimated accuracy of +/- 6 seconds.
 HV0315
 HV0315.The orthometric height was determined by differential leveling and
 HV0315.adjusted by the NATIONAL GEODETIC SURVEY
 HV0315.in June 1991.
 HV0315
 HV0315.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0315.GEOID18 height accuracy estimate available here.
 HV0315
 HV0315.Click photographs - Photos may exist for this station.
 HV0315
 HV0315.The dynamic height is computed by dividing the NAVD 88
 HV0315.geopotential number by the normal gravity value computed on the
 HV0315.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0315.degrees latitude (g = 980.6199 gals.).
 HV0315
 HV0315.The modeled gravity was interpolated from observed gravity values.
 HV0315
 HV0315;                    North         East    Units  Estimated Accuracy
 HV0315;SPC MD       -    64,820.      444,760.      MT  (+/- 180 meters Scaled)
 HV0315
 HV0315_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH697345(NAD 83)
 HV0315
 HV0315                          SUPERSEDED SURVEY CONTROL
 HV0315
 HV0315  NGVD 29 (11/26/84)   25.669  (m)           84.22   (f) ADJUSTED    1 2
 HV0315
 HV0315.Superseded values are not recommended for survey control.
 HV0315
 HV0315.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0315.See file dsdata.pdf to determine how the superseded data were derived.
 HV0315
 HV0315_MARKER: DB = BENCH MARK DISK
 HV0315_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0315_STAMPING: E 38 1941
 HV0315_MARK LOGO: CGS
 HV0315_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0315+STABILITY: SURFACE MOTION
 HV0315
 HV0315  HISTORY     - Date     Condition        Report By
 HV0315  HISTORY     - 1941     MONUMENTED       CGS
 HV0315  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0315  HISTORY     - 1982     MARK NOT FOUND   USPSQD
 HV0315  HISTORY     - 1982     MARK NOT FOUND   USGS
 HV0315
 HV0315                          STATION DESCRIPTION
 HV0315
 HV0315'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0315'1.2 MI NE FROM GREAT MILLS.
 HV0315'ABOUT 1.2 MILES NORTHEAST ALONG THE COUNTY ROAD LEADING TO
 HV0315'JARBOESVILLE FROM THE POST OFFICE AT GREAT MILLS, ST. MARYS
 HV0315'COUNTY, 50.2 FEET WEST OF POLE 35-1/2, AT THE JUNCTION OF A SIDE
 HV0315'ROAD LEADING NORTH, 25 FEET SOUTHWEST OF THE CENTER LINE OF THE
 HV0315'SIDE ROAD, 21 FEET NORTHWEST OF THE CENTER LINE OF THE COUNTY
 HV0315'ROAD, IN THE EAST CORNER OF A FIELD, 4 FEET WEST OF A CORNER FENCE
 HV0315'POST, AND 0.7 FOOT SOUTHEAST OF A WHITE WOODEN POST STENCILED
 HV0315'U.S.B.M.  A STANDARD DISK, STAMPED E 38 1941 AND SET IN THE
 HV0315'TOP OF A CONCRETE POST.
 HV0315
 HV0315                          STATION RECOVERY (1982)
 HV0315
 HV0315'RECOVERY NOTE BY US POWER SQUADRON 1982 (WWM)
 HV0315'MARK NOT FOUND.
 HV0315
 HV0315                          STATION RECOVERY (1982)
 HV0315
 HV0315'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1982
 HV0315'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1388 ***********************************************************************
 JV1388  DESIGNATION -  E 39
 JV1388  PID         -  JV1388
 JV1388  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1388  COUNTRY     -  US
 JV1388  USGS QUAD   -  LAUREL (2016)
 JV1388
 JV1388                         *CURRENT SURVEY CONTROL
 JV1388  ______________________________________________________________________
 JV1388* NAD 83(1986) POSITION- 39 02 08.     (N) 076 45 02.     (W)   SCALED
 JV1388* NAVD 88 ORTHO HEIGHT -    25.745 (meters)       84.47  (feet) ADJUSTED
 JV1388  ______________________________________________________________________
 JV1388  GEOID HEIGHT    -        -32.586 (meters)                     GEOID18
 JV1388  DYNAMIC HEIGHT  -         25.731 (meters)       84.42  (feet) COMP
 JV1388  MODELED GRAVITY -    980,085.1   (mgal)                       NAVD 88
 JV1388
 JV1388  VERT ORDER      -  FIRST     CLASS II
 JV1388
 JV1388.The horizontal coordinates were scaled from a map and have
 JV1388.an estimated accuracy of +/- 6 seconds.
 JV1388
 JV1388.The orthometric height was determined by differential leveling and
 JV1388.adjusted by the NATIONAL GEODETIC SURVEY
 JV1388.in June 1991.
 JV1388
 JV1388.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1388.GEOID18 height accuracy estimate available here.
 JV1388
 JV1388.Click photographs - Photos may exist for this station.
 JV1388
 JV1388.The dynamic height is computed by dividing the NAVD 88
 JV1388.geopotential number by the normal gravity value computed on the
 JV1388.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1388.degrees latitude (g = 980.6199 gals.).
 JV1388
 JV1388.The modeled gravity was interpolated from observed gravity values.
 JV1388
 JV1388;                    North         East    Units  Estimated Accuracy
 JV1388;SPC MD       -   151,980.      421,600.      MT  (+/- 180 meters Scaled)
 JV1388
 JV1388_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ484221(NAD 83)
 JV1388
 JV1388                          SUPERSEDED SURVEY CONTROL
 JV1388
 JV1388  NGVD 29 (11/26/84)   25.974  (m)           85.22   (f) ADJUSTED    1 2
 JV1388
 JV1388.Superseded values are not recommended for survey control.
 JV1388
 JV1388.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1388.See file dsdata.pdf to determine how the superseded data were derived.
 JV1388
 JV1388_MARKER: DB = BENCH MARK DISK
 JV1388_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1388+WITH SETTING: PAVEMENT
 JV1388_SP_SET: POLE BASE
 JV1388_STAMPING: E 39 1941
 JV1388_MARK LOGO: CGS
 JV1388_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1388+STABILITY: SURFACE MOTION
 JV1388_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1388+SATELLITE: SATELLITE OBSERVATIONS - September 27, 2002
 JV1388
 JV1388  HISTORY     - Date     Condition        Report By
 JV1388  HISTORY     - 1941     MONUMENTED       CGS
 JV1388  HISTORY     - 20020927 GOOD             INDIV
 JV1388
 JV1388                          STATION DESCRIPTION
 JV1388
 JV1388'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1388'4.2 MI SW FROM ODENTON.
 JV1388'ABOUT 4.2 MILES SOUTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV1388'THE STATION AT ODENTON, ANNE ARUNDEL COUNTY, 41.5 FEET
 JV1388'SOUTHWEST OF MILEPOST 118, AT POWER-TRANSMISSION LINE POLE 118-01,
 JV1388'IN THE TOP OF THE EAST CORNER OF THE CONCRETE BASE, AND 21.5
 JV1388'FEET NORTHWEST OF THE NORTHWEST RAIL OF THE NORTHWEST TRACK.
 JV1388'A STANDARD DISK, STAMPED E 39 1941.
 JV1388
 JV1388                          STATION RECOVERY (2002)
 JV1388
 JV1388'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (RJB)
 JV1388'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0567 ***********************************************************************
 JV0567  DESIGNATION -  E 4
 JV0567  PID         -  JV0567
 JV0567  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0567  COUNTRY     -  US
 JV0567  USGS QUAD   -  BALTIMORE EAST (2016)
 JV0567
 JV0567                         *CURRENT SURVEY CONTROL
 JV0567  ______________________________________________________________________
 JV0567* NAD 83(1986) POSITION- 39 16 24.5    (N) 076 36 41.8    (W)   HD_HELD2
 JV0567* NAVD 88 ORTHO HEIGHT -    16.108 (meters)       52.85  (feet) ADJUSTED
 JV0567  ______________________________________________________________________
 JV0567  GEOID HEIGHT    -        -32.756 (meters)                     GEOID18
 JV0567  DYNAMIC HEIGHT  -         16.099 (meters)       52.82  (feet) COMP
 JV0567  MODELED GRAVITY -    980,102.5   (mgal)                       NAVD 88
 JV0567
 JV0567  VERT ORDER      -  FIRST     CLASS I
 JV0567
 JV0567.The horizontal coordinates were established by autonomous hand held GPS
 JV0567.observations and have an estimated accuracy of +/- 10 meters.
 JV0567
 JV0567.The orthometric height was determined by differential leveling and
 JV0567.adjusted by the NATIONAL GEODETIC SURVEY
 JV0567.in June 1991.
 JV0567
 JV0567.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0567.GEOID18 height accuracy estimate available here.
 JV0567
 JV0567.Click photographs - Photos may exist for this station.
 JV0567
 JV0567.The dynamic height is computed by dividing the NAVD 88
 JV0567.geopotential number by the normal gravity value computed on the
 JV0567.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0567.degrees latitude (g = 980.6199 gals.).
 JV0567
 JV0567.The modeled gravity was interpolated from observed gravity values.
 JV0567
 JV0567;                    North         East    Units  Estimated Accuracy
 JV0567;SPC MD       -   178,437.      433,514.      MT  (+/- 10 meters HH2 GPS)
 JV0567
 JV0567_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6098248362(NAD 83)
 JV0567
 JV0567                          SUPERSEDED SURVEY CONTROL
 JV0567
 JV0567  NGVD 29 (11/26/84)   16.347  (m)           53.63   (f) ADJUSTED    1 1
 JV0567
 JV0567.Superseded values are not recommended for survey control.
 JV0567
 JV0567.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0567.See file dsdata.pdf to determine how the superseded data were derived.
 JV0567
 JV0567_MARKER: DB = BENCH MARK DISK
 JV0567_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0567_SP_SET: BUILDING
 JV0567_STAMPING: E 4 1933
 JV0567_MARK LOGO: CGS
 JV0567_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0567_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0567+SATELLITE: SATELLITE OBSERVATIONS - September 01, 2008
 JV0567
 JV0567  HISTORY     - Date     Condition        Report By
 JV0567  HISTORY     - 1933     MONUMENTED       CGS
 JV0567  HISTORY     - 1971     GOOD             NGS
 JV0567  HISTORY     - 19971027 GOOD             USPSQD
 JV0567  HISTORY     - 20040714 GOOD             GEOCAC
 JV0567  HISTORY     - 20080901 GOOD             GEOCAC
 JV0567
 JV0567                          STATION DESCRIPTION
 JV0567
 JV0567'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0567'AT BALTIMORE.
 JV0567'AT BALTIMORE, ON LIGHT STREET, ONE BLOCK NORTH OF FORT AVENUE,
 JV0567'AT PRIMARY SCHOOL NO. 33, IN THE WEST WALL OF THE BUILDING,
 JV0567'2 FEET NORTH OF THE SOUTHWEST CORNER, 50 FEET EAST OF THE
 JV0567'CENTER LINE OF LIGHT STREET, AND 5 FEET ABOVE THE SIDEWALK.
 JV0567'A STANDARD DISK, STAMPED E 4 1933 AND SET VERTICALLY.
 JV0567
 JV0567                          STATION RECOVERY (1997)
 JV0567
 JV0567'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV0567'RECOVERED IN GOOD CONDITION.
 JV0567
 JV0567                          STATION RECOVERY (2004)
 JV0567
 JV0567'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV0567'PRIMARY SCHOOL NO. 33 IS NOW KNOWN AS THE SCHOOL 33 ART CENTER.  IT IS
 JV0567'LOCATED IN THE NORTHEASTR ANGLE OF THE INTERSECTION OF LIGHT STREET
 JV0567'AND BIRKHEAD STREET, ABOUT 50 FEET (15.24 M) EAST OF THE CENTERLINE OF
 JV0567'LIGHT STREET, ABOUT 27 FEET (8.23 M) NORTH OF THE NORTH
 JV0567'CURB OF BIRKHEAD STREET, AND OTHERWISE AS DESCRIBED.
 JV0567
 JV0567                          STATION RECOVERY (2008)
 JV0567
 JV0567'RECOVERY NOTE BY GEOCACHING 2008 (PSB)
 JV0567'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0963 ***********************************************************************
 HV0963  DESIGNATION -  E 40
 HV0963  PID         -  HV0963
 HV0963  STATE/COUNTY-  MD/CHARLES
 HV0963  COUNTRY     -  US
 HV0963  USGS QUAD   -  HUGHESVILLE (2016)
 HV0963
 HV0963                         *CURRENT SURVEY CONTROL
 HV0963  ______________________________________________________________________
 HV0963* NAD 83(1986) POSITION- 38 34 03.     (N) 076 51 42.     (W)   SCALED
 HV0963* NAVD 88 ORTHO HEIGHT -    56.184 (meters)      184.33  (feet) ADJUSTED
 HV0963  ______________________________________________________________________
 HV0963  GEOID HEIGHT    -        -33.223 (meters)                     GEOID18
 HV0963  DYNAMIC HEIGHT  -         56.150 (meters)      184.22  (feet) COMP
 HV0963  MODELED GRAVITY -    980,024.9   (mgal)                       NAVD 88
 HV0963
 HV0963  VERT ORDER      -  FIRST     CLASS II
 HV0963
 HV0963.The horizontal coordinates were scaled from a map and have
 HV0963.an estimated accuracy of +/- 6 seconds.
 HV0963
 HV0963.The orthometric height was determined by differential leveling and
 HV0963.adjusted by the NATIONAL GEODETIC SURVEY
 HV0963.in June 1991.
 HV0963
 HV0963.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0963.GEOID18 height accuracy estimate available here.
 HV0963
 HV0963.Click photographs - Photos may exist for this station.
 HV0963
 HV0963.The dynamic height is computed by dividing the NAVD 88
 HV0963.geopotential number by the normal gravity value computed on the
 HV0963.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0963.degrees latitude (g = 980.6199 gals.).
 HV0963
 HV0963.The modeled gravity was interpolated from observed gravity values.
 HV0963
 HV0963;                    North         East    Units  Estimated Accuracy
 HV0963;SPC MD       -   100,010.      412,060.      MT  (+/- 180 meters Scaled)
 HV0963
 HV0963_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH378704(NAD 83)
 HV0963
 HV0963                          SUPERSEDED SURVEY CONTROL
 HV0963
 HV0963  NGVD 29 (11/26/84)   56.418  (m)          185.10   (f) ADJUSTED    1 2
 HV0963
 HV0963.Superseded values are not recommended for survey control.
 HV0963
 HV0963.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0963.See file dsdata.pdf to determine how the superseded data were derived.
 HV0963
 HV0963_MARKER: DB = BENCH MARK DISK
 HV0963_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0963_SP_SET: CULVERT
 HV0963_STAMPING: E 40 1941
 HV0963_MARK LOGO: CGS
 HV0963_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0963
 HV0963  HISTORY     - Date     Condition        Report By
 HV0963  HISTORY     - 1941     MONUMENTED       CGS
 HV0963  HISTORY     - 1966     GOOD             MDSRC
 HV0963
 HV0963                          STATION DESCRIPTION
 HV0963
 HV0963'DESCRIBED BY MD STATE ROADS COMM 1966
 HV0963'5.1 MI SE FROM WALDORF.
 HV0963'ABOUT 5.1 MILES SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE
 HV0963'PENNSYLVANIA RAILROAD STATION AT WALDORF, CHARLES COUNTY, AT
 HV0963'THE JUNCTION OF A ROAD LEADING NORTHWEST TO A FARMHOUSE, 44 FEET
 HV0963'SOUTHEAST OF POWER-TRANSMISSION LINE POLE 343, 7.3 FEET SOUTH
 HV0963'OF THE CENTER LINE OF THE SOUTH END OF AN 18-INCH CONCRETE
 HV0963'CULVERT UNDER THE ROAD, AT A 12-INCH CONCRETE CULVERT, IN THE TOP
 HV0963'OF THE SOUTH CORNER OF THE WEST HEAD WALL, 28.5 FEET WEST OF THE
 HV0963'CENTER LINE OF THE HIGHWAY, AND 19.5 FEET SOUTH OF THE CENTER
 HV0963'LINE OF THE ROAD.  A STANDARD DISK, STAMPED E 40 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0542 ***********************************************************************
 HV0542  DESIGNATION -  E 41
 HV0542  PID         -  HV0542
 HV0542  STATE/COUNTY-  MD/ST MARYS
 HV0542  COUNTRY     -  US
 HV0542  USGS QUAD   -  LEONARDTOWN (2016)
 HV0542
 HV0542                         *CURRENT SURVEY CONTROL
 HV0542  ______________________________________________________________________
 HV0542* NAD 83(1986) POSITION- 38 18 46.     (N) 076 40 04.     (W)   SCALED
 HV0542* NAVD 88 ORTHO HEIGHT -    25.232 (meters)       82.78  (feet) POSTED
 HV0542  ______________________________________________________________________
 HV0542  GEOID HEIGHT    -        -33.806 (meters)                     GEOID18
 HV0542  DYNAMIC HEIGHT  -         25.22  (meters)       82.7   (feet) COMP
 HV0542  MODELED GRAVITY -    980,035.3   (mgal)                       NAVD 88
 HV0542
 HV0542  VERT ORDER      -  * POSTED, SEE BELOW
 HV0542
 HV0542.The horizontal coordinates were scaled from a map and have
 HV0542.an estimated accuracy of +/- 6 seconds.
 HV0542
 HV0542.The orthometric height was determined by differential leveling
 HV0542.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0542
 HV0542.* This is a POSTED BENCH MARK height.
 HV0542
 HV0542.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0542.GEOID18 height accuracy estimate available here.
 HV0542
 HV0542.Click photographs - Photos may exist for this station.
 HV0542
 HV0542.The dynamic height is computed by dividing the NAVD 88
 HV0542.geopotential number by the normal gravity value computed on the
 HV0542.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0542.degrees latitude (g = 980.6199 gals.).
 HV0542
 HV0542.The modeled gravity was interpolated from observed gravity values.
 HV0542
 HV0542;                    North         East    Units  Estimated Accuracy
 HV0542;SPC MD       -    71,770.      429,060.      MT  (+/- 180 meters Scaled)
 HV0542
 HV0542_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH541418(NAD 83)
 HV0542
 HV0542                          SUPERSEDED SURVEY CONTROL
 HV0542
 HV0542  NGVD 29 (11/26/84)   25.540  (m)           83.79   (f) ADJUSTED    1 2
 HV0542
 HV0542.Superseded values are not recommended for survey control.
 HV0542
 HV0542.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0542.See file dsdata.pdf to determine how the superseded data were derived.
 HV0542
 HV0542_MARKER: DB = BENCH MARK DISK
 HV0542_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0542_SP_SET: CULVERT
 HV0542_STAMPING: E 41 1941
 HV0542_MARK LOGO: CGS
 HV0542_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0542
 HV0542  HISTORY     - Date     Condition        Report By
 HV0542  HISTORY     - 1941     MONUMENTED       CGS
 HV0542  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0542
 HV0542                          STATION DESCRIPTION
 HV0542
 HV0542'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0542'2.7 MI NW FROM LEONARDTOWN.
 HV0542'ABOUT 2.7 MILES NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST
 HV0542'OFFICE AT LEONARDTOWN, SAINT MARYS COUNTY, AT THE JUNCTION OF A
 HV0542'ROAD LEADING TO CLEMENTS, 93 FEET NORTHWEST OF POWER-TRANSMISSION
 HV0542'LINE POLE 902, 75.5 FEET SOUTHWEST OF POWER-TRANSMISSION LINE
 HV0542'POLE 901, AT A 12-INCH CONCRETE CULVERT, IN THE TOP OF THE NORTHWEST
 HV0542'CORNER OF THE NORTHEAST HEAD WALL, 82 FEET WEST OF THE CENTER
 HV0542'LINE OF THE HIGHWAY, AND 16 FEET NORTHEAST OF THE CENTER LINE OF
 HV0542'THE ROAD.  A STANDARD DISK, STAMPED E 41 1941.
 HV0542
 HV0542                          STATION RECOVERY (1971)
 HV0542
 HV0542'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0542'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3218 ***********************************************************************
 JV3218  DESIGNATION -  E 42
 JV3218  PID         -  JV3218
 JV3218  STATE/COUNTY-  MD/WASHINGTON
 JV3218  COUNTRY     -  US
 JV3218  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3218
 JV3218                         *CURRENT SURVEY CONTROL
 JV3218  ______________________________________________________________________
 JV3218* NAD 83(1986) POSITION- 39 36 51.7    (N) 077 51 33.5    (W)   HD_HELD2
 JV3218* NAVD 88 ORTHO HEIGHT -   125.440 (meters)      411.55  (feet) ADJUSTED
 JV3218  ______________________________________________________________________
 JV3218  GEOID HEIGHT    -        -34.292 (meters)                     GEOID18
 JV3218  DYNAMIC HEIGHT  -        125.366 (meters)      411.31  (feet) COMP
 JV3218  MODELED GRAVITY -    980,038.2   (mgal)                       NAVD 88
 JV3218
 JV3218  VERT ORDER      -  FIRST     CLASS II
 JV3218
 JV3218.The horizontal coordinates were established by autonomous hand held GPS
 JV3218.observations and have an estimated accuracy of +/- 10 meters.
 JV3218
 JV3218.The orthometric height was determined by differential leveling and
 JV3218.adjusted by the NATIONAL GEODETIC SURVEY
 JV3218.in June 1991.
 JV3218
 JV3218.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3218.GEOID18 height accuracy estimate available here.
 JV3218
 JV3218.Click photographs - Photos may exist for this station.
 JV3218
 JV3218.The dynamic height is computed by dividing the NAVD 88
 JV3218.geopotential number by the normal gravity value computed on the
 JV3218.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3218.degrees latitude (g = 980.6199 gals.).
 JV3218
 JV3218.The modeled gravity was interpolated from observed gravity values.
 JV3218
 JV3218;                    North         East    Units  Estimated Accuracy
 JV3218;SPC MD       -   216,560.      326,208.      MT  (+/- 10 meters HH2 GPS)
 JV3218
 JV3218_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5454388863(NAD 83)
 JV3218
 JV3218                          SUPERSEDED SURVEY CONTROL
 JV3218
 JV3218  NGVD 29 (11/26/84)  125.647  (m)          412.23   (f) ADJUSTED    1 2
 JV3218
 JV3218.Superseded values are not recommended for survey control.
 JV3218
 JV3218.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3218.See file dsdata.pdf to determine how the superseded data were derived.
 JV3218
 JV3218_MARKER: DB = BENCH MARK DISK
 JV3218_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV3218+WITH SETTING: PAVEMENT
 JV3218_SP_SET: SIGNAL TOWER
 JV3218_STAMPING: E 42 1941
 JV3218_MARK LOGO: CGS
 JV3218_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3218+STABILITY: SURFACE MOTION
 JV3218_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3218+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2020
 JV3218
 JV3218  HISTORY     - Date     Condition        Report By
 JV3218  HISTORY     - 1941     MONUMENTED       CGS
 JV3218  HISTORY     - 1976     GOOD             LOCSUR
 JV3218  HISTORY     - 1991     GOOD             USPSQD
 JV3218  HISTORY     - 20070706 GOOD             GEOCAC
 JV3218  HISTORY     - 20200328 GOOD             WSRR
 JV3218
 JV3218                          STATION DESCRIPTION
 JV3218
 JV3218'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV3218'8.1 MI SW FROM HAGERSTOWN.
 JV3218'8.1 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JV3218'THE STATION AT HAGERSTOWN, 19 RAILS EAST OF MILE-POST NO. 95,
 JV3218'SET IN THE SOUTHWEST CORNER OF SIGNAL TOWER NO. 948, 200 FEET
 JV3218'WEST OF A CROSS ROAD LEADING NORTH, 14.5 FEET NORTH OF THE
 JV3218'NORTH RAIL OF THE EAST-BOUND TRACK.
 JV3218
 JV3218                          STATION RECOVERY (1976)
 JV3218
 JV3218'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1976
 JV3218'RECOVERED IN GOOD CONDITION.
 JV3218
 JV3218                          STATION RECOVERY (1991)
 JV3218
 JV3218'RECOVERY NOTE BY US POWER SQUADRON 1991 (WPG)
 JV3218'RECOVERED IN GOOD CONDITION.
 JV3218
 JV3218                          STATION RECOVERY (2007)
 JV3218
 JV3218'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV3218'ACCESS BY PRIVATE ROAD AT 15106 BOTTOM ROAD WEST OF WILLIAMSPORT
 JV3218'RUNNING NW UPHILL TO THE RR.  MILEPOST WAS NOT FOUND.  SIGNAL TOWER
 JV3218'HAS BEEN REMOVED BUT BASE AND MARK REMAIN. TWO HUNDRED FEET WEST OF
 JV3218'THE ACCESS ROAD INTERSECTION WITH THE RAILROAD AND THEN NORTH OF THE
 JV3218'RAILROAD MAINTENANCE ROAD ABOUT 14 FEET.
 JV3218
 JV3218                          STATION RECOVERY (2020)
 JV3218
 JV3218'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV3218'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0023 ***********************************************************************
 JW0023  DESIGNATION -  E 43
 JW0023  PID         -  JW0023
 JW0023  STATE/COUNTY-  MD/WASHINGTON
 JW0023  COUNTRY     -  US
 JW0023  USGS QUAD   -  HANCOCK (2016)
 JW0023
 JW0023                         *CURRENT SURVEY CONTROL
 JW0023  ______________________________________________________________________
 JW0023* NAD 83(1986) POSITION- 39 39 03.     (N) 078 14 38.     (W)   SCALED
 JW0023* NAVD 88 ORTHO HEIGHT -   143.007 (meters)      469.18  (feet) ADJUSTED
 JW0023  ______________________________________________________________________
 JW0023  GEOID HEIGHT    -        -33.924 (meters)                     GEOID18
 JW0023  DYNAMIC HEIGHT  -        142.923 (meters)      468.91  (feet) COMP
 JW0023  MODELED GRAVITY -    980,039.0   (mgal)                       NAVD 88
 JW0023
 JW0023  VERT ORDER      -  FIRST     CLASS II
 JW0023
 JW0023.The horizontal coordinates were scaled from a map and have
 JW0023.an estimated accuracy of +/- 6 seconds.
 JW0023
 JW0023.The orthometric height was determined by differential leveling and
 JW0023.adjusted by the NATIONAL GEODETIC SURVEY
 JW0023.in June 1991.
 JW0023
 JW0023.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0023.GEOID18 height accuracy estimate available here.
 JW0023
 JW0023.Click photographs - Photos may exist for this station.
 JW0023
 JW0023.The dynamic height is computed by dividing the NAVD 88
 JW0023.geopotential number by the normal gravity value computed on the
 JW0023.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0023.degrees latitude (g = 980.6199 gals.).
 JW0023
 JW0023.The modeled gravity was interpolated from observed gravity values.
 JW0023
 JW0023;                    North         East    Units  Estimated Accuracy
 JW0023;SPC MD       -   220,990.      293,240.      MT  (+/- 180 meters Scaled)
 JW0023
 JW0023_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD364926(NAD 83)
 JW0023
 JW0023                          SUPERSEDED SURVEY CONTROL
 JW0023
 JW0023  NGVD 29 (??/??/92)  143.211  (m)          469.85   (f) ADJ UNCH    1 2
 JW0023
 JW0023.Superseded values are not recommended for survey control.
 JW0023
 JW0023.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0023.See file dsdata.pdf to determine how the superseded data were derived.
 JW0023
 JW0023_MARKER: DB = BENCH MARK DISK
 JW0023_SETTING: 80 = SET IN A BOULDER
 JW0023_STAMPING: E 43 1941
 JW0023_MARK LOGO: CGS
 JW0023_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0023+STABILITY: SURFACE MOTION
 JW0023
 JW0023  HISTORY     - Date     Condition        Report By
 JW0023  HISTORY     - 1941     MONUMENTED       CGS
 JW0023
 JW0023                          STATION DESCRIPTION
 JW0023
 JW0023'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0023'5.7 MI SW FROM HANCOCK.
 JW0023'5.7 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0023'STATION AT HANCOCK, AT A PUBLIC ROAD CROSSING, 33 RAILS SOUTHWEST
 JW0023'OF MILE-POST NO. 121, SET IN A ROCK BOULDER ABOUT 1 FOOT LOWER
 JW0023'THAN THE TRACK, AND AT THE TOP OF A HILL WHERE THE ROAD CROSSES
 JW0023'THE TRACK, 13.5 FEET NORTHWEST OF THE NORTHWEST RAIL OF THE TRACK,
 JW0023'12 FEET SOUTHEAST OF THE CENTER-LINE OF THE ROAD, 43.7 FEET
 JW0023'NORTHEAST OF THE CROSSING SIGN POST.  A STANDARD DISK STAMPED
 JW0023'E-43 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0732 ***********************************************************************
 JV0732  DESIGNATION -  E 44
 JV0732  PID         -  JV0732
 JV0732  STATE/COUNTY-  MD/HOWARD
 JV0732  COUNTRY     -  US
 JV0732  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0732
 JV0732                         *CURRENT SURVEY CONTROL
 JV0732  ______________________________________________________________________
 JV0732* NAD 83(1986) POSITION- 39 18 22.     (N) 076 47 46.     (W)   SCALED
 JV0732* NAVD 88 ORTHO HEIGHT -    60.690 (meters)      199.11  (feet) ADJUSTED
 JV0732  ______________________________________________________________________
 JV0732  GEOID HEIGHT    -        -32.200 (meters)                     GEOID18
 JV0732  DYNAMIC HEIGHT  -         60.658 (meters)      199.01  (feet) COMP
 JV0732  MODELED GRAVITY -    980,106.1   (mgal)                       NAVD 88
 JV0732
 JV0732  VERT ORDER      -  FIRST     CLASS II
 JV0732
 JV0732.The horizontal coordinates were scaled from a map and have
 JV0732.an estimated accuracy of +/- 6 seconds.
 JV0732
 JV0732.The orthometric height was determined by differential leveling and
 JV0732.adjusted by the NATIONAL GEODETIC SURVEY
 JV0732.in June 1991.
 JV0732
 JV0732.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0732.GEOID18 height accuracy estimate available here.
 JV0732
 JV0732.Click photographs - Photos may exist for this station.
 JV0732
 JV0732.The dynamic height is computed by dividing the NAVD 88
 JV0732.geopotential number by the normal gravity value computed on the
 JV0732.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0732.degrees latitude (g = 980.6199 gals.).
 JV0732
 JV0732.The modeled gravity was interpolated from observed gravity values.
 JV0732
 JV0732;                    North         East    Units  Estimated Accuracy
 JV0732;SPC MD       -   182,010.      417,590.      MT  (+/- 180 meters Scaled)
 JV0732
 JV0732_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ451522(NAD 83)
 JV0732
 JV0732                          SUPERSEDED SURVEY CONTROL
 JV0732
 JV0732  NGVD 29 (11/26/84)   60.874  (m)          199.72   (f) ADJUSTED    1 2
 JV0732
 JV0732.Superseded values are not recommended for survey control.
 JV0732
 JV0732.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0732.See file dsdata.pdf to determine how the superseded data were derived.
 JV0732
 JV0732_MARKER: DB = BENCH MARK DISK
 JV0732_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0732_SP_SET: CULVERT
 JV0732_STAMPING: E 44 1941
 JV0732_MARK LOGO: CGS
 JV0732_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0732
 JV0732  HISTORY     - Date     Condition        Report By
 JV0732  HISTORY     - 1941     MONUMENTED       CGS
 JV0732  HISTORY     - 1966     GOOD             MDSRC
 JV0732
 JV0732                          STATION DESCRIPTION
 JV0732
 JV0732'DESCRIBED BY MD STATE ROADS COMM 1966
 JV0732'3.7 MI NW FROM ELLICOTT CITY.
 JV0732'3.7 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV0732'THE STATION AT ELLICOTT CITY, 0.3 MILE SOUTHWEST OF THE CROSSING
 JV0732'OF THE HOLLFIELD ROAD, ON THE TOP OF THE NORTHEAST END OF THE
 JV0732'SOUTHEAST STONE HEADWALL OF AN 18-INCH PIPE CULVERT UNDER THE
 JV0732'TRACK, 6 FEET SOUTHEAST OF THE SOUTHEAST RAIL, 2 RAILS SOUTHWEST
 JV0732'OF A CONCRETE PHONE BOOTH, 2-1/2 RAILS SOUTHWEST OF A SWITCH
 JV0732'STAND, 2-1/2 FEET BELOW THE TOP OF RAIL 1 FOOT SOUTHWEST OF THE
 JV0732'NORTHEAST END OF THE STONE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0757 ***********************************************************************
 JV0757  DESIGNATION -  E 45
 JV0757  PID         -  JV0757
 JV0757  STATE/COUNTY-  MD/CARROLL
 JV0757  COUNTRY     -  US
 JV0757  USGS QUAD   -  FINKSBURG (2016)
 JV0757
 JV0757                         *CURRENT SURVEY CONTROL
 JV0757  ______________________________________________________________________
 JV0757* NAD 83(1986) POSITION- 39 26 07.     (N) 076 56 11.     (W)   SCALED
 JV0757* NAVD 88 ORTHO HEIGHT -   123.756 (meters)      406.02  (feet) ADJUSTED
 JV0757  ______________________________________________________________________
 JV0757  GEOID HEIGHT    -        -31.999 (meters)                     GEOID18
 JV0757  DYNAMIC HEIGHT  -        123.691 (meters)      405.81  (feet) COMP
 JV0757  MODELED GRAVITY -    980,103.1   (mgal)                       NAVD 88
 JV0757
 JV0757  VERT ORDER      -  SECOND    CLASS 0
 JV0757
 JV0757.The horizontal coordinates were scaled from a map and have
 JV0757.an estimated accuracy of +/- 6 seconds.
 JV0757
 JV0757.The orthometric height was determined by differential leveling and
 JV0757.adjusted by the NATIONAL GEODETIC SURVEY
 JV0757.in June 1991.
 JV0757
 JV0757.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0757.GEOID18 height accuracy estimate available here.
 JV0757
 JV0757.Click photographs - Photos may exist for this station.
 JV0757
 JV0757.The dynamic height is computed by dividing the NAVD 88
 JV0757.geopotential number by the normal gravity value computed on the
 JV0757.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0757.degrees latitude (g = 980.6199 gals.).
 JV0757
 JV0757.The modeled gravity was interpolated from observed gravity values.
 JV0757
 JV0757;                    North         East    Units  Estimated Accuracy
 JV0757;SPC MD       -   196,330.      405,480.      MT  (+/- 180 meters Scaled)
 JV0757
 JV0757_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ333668(NAD 83)
 JV0757
 JV0757                          SUPERSEDED SURVEY CONTROL
 JV0757
 JV0757  NGVD 29 (11/26/84)  123.962  (m)          406.70   (f) ADJUSTED    2 0
 JV0757
 JV0757.Superseded values are not recommended for survey control.
 JV0757
 JV0757.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0757.See file dsdata.pdf to determine how the superseded data were derived.
 JV0757
 JV0757_MARKER: DB = BENCH MARK DISK
 JV0757_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0757_SP_SET: BRIDGE
 JV0757_STAMPING: E 45 1941
 JV0757_MARK LOGO: CGS
 JV0757_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0757
 JV0757  HISTORY     - Date     Condition        Report By
 JV0757  HISTORY     - 1941     MONUMENTED       CGS
 JV0757  HISTORY     - 1942     GOOD             CGS
 JV0757  HISTORY     - 19990603 MARK NOT FOUND   MDSHA
 JV0757
 JV0757                          STATION DESCRIPTION
 JV0757
 JV0757'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0757'2.3 MI N FROM ELDERSBURG.
 JV0757'ABOUT 2.3 MILES NORTH ALONG STATE HIGHWAY 32 FROM THE CROSSING OF
 JV0757'STATE HIGHWAY 26 AT ELDERSBURG, CARROLL COUNTY, AT A 124-FOOT
 JV0757'CONCRETE BRIDGE OVER MORGAN RUN, IN THE TOP OF THE BASE OF THE
 JV0757'SOUTH RAILING, 61.8FEET SOUTH OF THE NORTHEAST END OF THE RAILING,
 JV0757'12.5 FEET EAST OF THE CENTER LINE OF THE BRIDGE, AND ABOUT 0.4
 JV0757'FOOT ABOVE THE BRIDGE FLOOR.  A STANDARD DISK, STAMPED E 45 1941.
 JV0757
 JV0757                          STATION RECOVERY (1942)
 JV0757
 JV0757'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV0757'RECOVERED IN GOOD CONDITION.
 JV0757
 JV0757                          STATION RECOVERY (1999)
 JV0757
 JV0757'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV0757'THE MARK WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2148 ***********************************************************************
 JV2148  DESIGNATION -  E 46
 JV2148  PID         -  JV2148
 JV2148  STATE/COUNTY-  MD/FREDERICK
 JV2148  COUNTRY     -  US
 JV2148  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2148
 JV2148                         *CURRENT SURVEY CONTROL
 JV2148  ______________________________________________________________________
 JV2148* NAD 83(1986) POSITION- 39 22 18.1    (N) 077 23 17.8    (W)   HD_HELD2
 JV2148* NAVD 88 ORTHO HEIGHT -    80.730 (meters)      264.86  (feet) ADJUSTED
 JV2148  ______________________________________________________________________
 JV2148  GEOID HEIGHT    -        -32.575 (meters)                     GEOID18
 JV2148  DYNAMIC HEIGHT  -         80.687 (meters)      264.72  (feet) COMP
 JV2148  MODELED GRAVITY -    980,087.4   (mgal)                       NAVD 88
 JV2148
 JV2148  VERT ORDER      -  FIRST     CLASS II
 JV2148
 JV2148.The horizontal coordinates were established by autonomous hand held GPS
 JV2148.observations and have an estimated accuracy of +/- 10 meters.
 JV2148
 JV2148.The orthometric height was determined by differential leveling and
 JV2148.adjusted by the NATIONAL GEODETIC SURVEY
 JV2148.in June 1991.
 JV2148
 JV2148.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2148.GEOID18 height accuracy estimate available here.
 JV2148
 JV2148.Click photographs - Photos may exist for this station.
 JV2148
 JV2148.The dynamic height is computed by dividing the NAVD 88
 JV2148.geopotential number by the normal gravity value computed on the
 JV2148.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2148.degrees latitude (g = 980.6199 gals.).
 JV2148
 JV2148.The modeled gravity was interpolated from observed gravity values.
 JV2148
 JV2148;                    North         East    Units  Estimated Accuracy
 JV2148;SPC MD       -   189,341.      366,542.      MT  (+/- 10 meters HH2 GPS)
 JV2148
 JV2148_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9426960746(NAD 83)
 JV2148
 JV2148                          SUPERSEDED SURVEY CONTROL
 JV2148
 JV2148  NGVD 29 (11/26/84)   80.950  (m)          265.58   (f) ADJUSTED    1 2
 JV2148
 JV2148.Superseded values are not recommended for survey control.
 JV2148
 JV2148.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2148.See file dsdata.pdf to determine how the superseded data were derived.
 JV2148
 JV2148_MARKER: DB = BENCH MARK DISK
 JV2148_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2148_SP_SET: BRIDGE
 JV2148_STAMPING: E 46 1941
 JV2148_MARK LOGO: CGS
 JV2148_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2148_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2148+SATELLITE: SATELLITE OBSERVATIONS - June 20, 2010
 JV2148
 JV2148  HISTORY     - Date     Condition        Report By
 JV2148  HISTORY     - 1941     MONUMENTED       CGS
 JV2148  HISTORY     - 1958     GOOD             CGS
 JV2148  HISTORY     - 1978     GOOD             NGS
 JV2148  HISTORY     - 20030912 GOOD             INDIV
 JV2148  HISTORY     - 20100620 GOOD             GEOCAC
 JV2148
 JV2148                          STATION DESCRIPTION
 JV2148
 JV2148'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2148'AT FREDERICK JUNCTION.
 JV2148'AT FREDERICK JUNCTION, FREDERICK COUNTY, ABOUT 287.0 FEET EAST OF
 JV2148'THE SOUTHEAST CORNER OF THE BALTIMORE AND OHIO RAILROAD STATION,
 JV2148'AT A BRIDGE OVER MONOCACY RIVER, IN THE TOP OF THE WEST ABUTMENT,
 JV2148'1.5 FEET SOUTH OF THE NORTH END, AND 11.0 FEET NORTH OF THE NORTH
 JV2148'RAIL OF THE WEST-BOUND TRACK.  A STANDARD DISK, STAMPED E 46 1941.
 JV2148
 JV2148                          STATION RECOVERY (1958)
 JV2148
 JV2148'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2148'RECOVERED IN GOOD CONDITION.
 JV2148
 JV2148                          STATION RECOVERY (1978)
 JV2148
 JV2148'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
 JV2148'RECOVERED IN GOOD CONDITION.
 JV2148
 JV2148                          STATION RECOVERY (2003)
 JV2148
 JV2148'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (HSE)
 JV2148'RECOVERED IN GOOD CONDITION.
 JV2148
 JV2148                          STATION RECOVERY (2010)
 JV2148
 JV2148'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV2148'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0394 ***********************************************************************
 JW0394  DESIGNATION -  E 47
 JW0394  PID         -  JW0394
 JW0394  STATE/COUNTY-  MD/ALLEGANY
 JW0394  COUNTRY     -  US
 JW0394  USGS QUAD   -  PATTERSON CREEK (2016)
 JW0394
 JW0394                         *CURRENT SURVEY CONTROL
 JW0394  ______________________________________________________________________
 JW0394* NAD 83(2011) POSITION- 39 35 26.17380(N) 078 44 17.38230(W)   ADJUSTED
 JW0394* NAD 83(2011) ELLIP HT-   162.354 (meters)        (06/27/12)   ADJUSTED
 JW0394* NAD 83(2011) EPOCH   -  2010.00
 JW0394* NAVD 88 ORTHO HEIGHT -   195.196 (meters)      640.41  (feet) ADJUSTED
 JW0394  ______________________________________________________________________
 JW0394  GEOID HEIGHT    -        -32.853 (meters)                     GEOID18
 JW0394  NAD 83(2011) X  -    961,217.581 (meters)                     COMP
 JW0394  NAD 83(2011) Y  - -4,827,154.389 (meters)                     COMP
 JW0394  NAD 83(2011) Z  -  4,043,163.984 (meters)                     COMP
 JW0394  LAPLACE CORR    -         -3.31  (seconds)                    DEFLEC18
 JW0394  DYNAMIC HEIGHT  -        195.083 (meters)      640.03  (feet) COMP
 JW0394  MODELED GRAVITY -    980,040.3   (mgal)                       NAVD 88
 JW0394
 JW0394  VERT ORDER      -  FIRST     CLASS II
 JW0394
 JW0394  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW0394  Standards:
 JW0394         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW0394            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW0394  -------------------------------------------------------------------
 JW0394  NETWORK    1.01   2.21           0.45   0.37   1.13     -0.00106138
 JW0394  -------------------------------------------------------------------
 JW0394  Click here for local accuracies and other accuracy information.
 JW0394
 JW0394.The horizontal coordinates were established by GPS observations
 JW0394.and adjusted by the National Geodetic Survey in June 2012.
 JW0394
 JW0394.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW0394.been affixed to the stable North American tectonic plate. See 
 JW0394.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW0394
 JW0394.The horizontal coordinates are valid at the epoch date displayed above
 JW0394.which is a decimal equivalence of Year/Month/Day.
 JW0394
 JW0394.The orthometric height was determined by differential leveling and
 JW0394.adjusted by the NATIONAL GEODETIC SURVEY
 JW0394.in June 1991.
 JW0394
 JW0394.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0394.GEOID18 height accuracy estimate available here.
 JW0394
 JW0394.Click photographs - Photos may exist for this station.
 JW0394
 JW0394.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW0394
 JW0394.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW0394
 JW0394.The ellipsoidal height was determined by GPS observations
 JW0394.and is referenced to NAD 83.
 JW0394
 JW0394.The dynamic height is computed by dividing the NAVD 88
 JW0394.geopotential number by the normal gravity value computed on the
 JW0394.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0394.degrees latitude (g = 980.6199 gals.).
 JW0394
 JW0394.The modeled gravity was interpolated from observed gravity values.
 JW0394
 JW0394. The following values were computed from the NAD 83(2011) position.
 JW0394
 JW0394;                    North         East     Units Scale Factor Converg.
 JW0394;SPC MD       -   214,995.926   250,693.959   MT  1.00002762   -1 05 27.3
 JW0394;SPC MD       -   705,365.80    822,485.10   sFT  1.00002762   -1 05 27.3
 JW0394;UTM  17      - 4,384,763.773   694,227.467   MT  1.00006447   +1 26 30.9
 JW0394
 JW0394!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW0394!SPC MD       -   0.99997453  x   1.00002762  =   1.00000215
 JW0394!UTM  17      -   0.99997453  x   1.00006447  =   1.00003900
 JW0394
 JW0394_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9422784763(NAD 83)
 JW0394
 JW0394                          SUPERSEDED SURVEY CONTROL
 JW0394
 JW0394  NAD 83(2007)-  39 35 26.17400(N)    078 44 17.38300(W) AD(2002.00) 0
 JW0394  ELLIP H (02/10/07)  162.370  (m)                       GP(2002.00)    
 JW0394  ELLIP H (08/30/02)  162.376  (m)                       GP(       ) 4 2
 JW0394  NAD 83(1991)-  39 35 26.17417(N)    078 44 17.38281(W) AD(       ) 1
 JW0394  ELLIP H (04/20/00)  162.318  (m)                       GP(       ) 4 1
 JW0394  NAVD 88             195.20   (m)          640.4    (f) LEVELING    3  
 JW0394  NGVD 29 (??/??/92)  195.389  (m)          641.04   (f) ADJ UNCH    1 2
 JW0394
 JW0394.Superseded values are not recommended for survey control.
 JW0394
 JW0394.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0394.See file dsdata.pdf to determine how the superseded data were derived.
 JW0394
 JW0394_MARKER: DB = BENCH MARK DISK
 JW0394_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW0394_SP_SET: BRIDGE ABUTMENT
 JW0394_STAMPING: E 47 1941
 JW0394_MARK LOGO: CGS
 JW0394_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW0394_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0394_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW0394+SATELLITE: SATELLITE OBSERVATIONS - July 08, 2009
 JW0394
 JW0394  HISTORY     - Date     Condition        Report By
 JW0394  HISTORY     - 1941     MONUMENTED       CGS
 JW0394  HISTORY     - 19990901 GOOD             HGSERV
 JW0394  HISTORY     - 20010717 GOOD             MDSHA
 JW0394  HISTORY     - 20090708 GOOD             RUKLKA
 JW0394
 JW0394                          STATION DESCRIPTION
 JW0394
 JW0394'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0394'5.8 MI SE FROM CUMBERLAND.
 JW0394'5.8 MILES SOUTHEAST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0394'STATION AT CUMBERLAND, SET IN THE CONCRETE OVER-PASS OVER THE
 JW0394'BALTIMORE AND OHIO RAILROAD, 71.2 FEET NORTH OF MILE-POST NO. 160,
 JW0394'SET IN THE SOUTHWEST CORNER OF THE SOUTH ABUTMENT, 3.6 FEET WEST
 JW0394'OF THE WEST RAIL OF THE TRACK.  A STANDARD DISK STAMPED E-47 1941.
 JW0394
 JW0394                          STATION RECOVERY (1999)
 JW0394
 JW0394'RECOVERY NOTE BY HAMILTON GEODETIC SERVICES 1999 (JVH)
 JW0394'RECOVERED AS DESCRIBED.
 JW0394
 JW0394                          STATION RECOVERY (2001)
 JW0394
 JW0394'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JW0394'THE STATION IS LOCATED ABOUT 4.4 MILES (7.1 KM) SOUTH OF CUMBERLAND,
 JW0394'AND 7.5 MILES (12.1 KM) NORTHWEST OF OLDTOWN.  TO REACH THE STATION
 JW0394'FROM THE INTERSTATE HIGHWAY 68 BRIDGE OVER STATE HIGHWAY 51
 JW0394'(INDUSTRIAL BLVD) IN CUMBERLAND, GO SOUTHEAST ALONG STATE HIGHWAY 51
 JW0394'FOR 5.7 MILES (9.2 KM) TO PPG ROAD LEADING WEST.  TURN RIGHT AND GO
 JW0394'WEST ALONG PPG ROAD FOR 0.05 MILES (0.08 KM) TO NORTH BRANCH ROAD
 JW0394'LEADING NORTH.  TURN RIGHT AND GO NORTH THEN WEST ALONG NORTH BRANCH
 JW0394'ROAD FOR 0.25 MILES (0.40 KM) TO THE WESTERN MARYLAND RAILROAD BRIDGE
 JW0394'OVER THE CSX RAILROAD AND THE STATION ON THE LEFT.  THE STATION IS A
 JW0394'BENCHMARK DISK SET IN A DRILL HOLE AT THE SOUTHWEST END OF THE SOUTH
 JW0394'BRIDGE ABUTMENT FOR THE WESTERN MARYLAND RAILROAD, 3.6 FEET (1.1 M)
 JW0394'WEST OF THE WEST RAIL OF THE TRACKS AND ABOUT LEVEL WITH THE TRACKS.
 JW0394
 JW0394                          STATION RECOVERY (2009)
 JW0394
 JW0394'RECOVERY NOTE BY RUMMEL KLEPPER AND KAHL 2009 (GV)
 JW0394'RECOVERED IN GOOD CONDITION
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0661 ***********************************************************************
 HV0661  DESIGNATION -  E 48
 HV0661  PID         -  HV0661
 HV0661  STATE/COUNTY-  MD/ST MARYS
 HV0661  COUNTRY     -  US
 HV0661  USGS QUAD   -  ROCK POINT (2016)
 HV0661
 HV0661                         *CURRENT SURVEY CONTROL
 HV0661  ______________________________________________________________________
 HV0661* NAD 83(1986) POSITION- 38 16 45.     (N) 076 46 38.     (W)   SCALED
 HV0661* NAVD 88 ORTHO HEIGHT -     8.044 (meters)       26.39  (feet) ADJUSTED
 HV0661  ______________________________________________________________________
 HV0661  GEOID HEIGHT    -        -33.710 (meters)                     GEOID18
 HV0661  DYNAMIC HEIGHT  -          8.039 (meters)       26.37  (feet) COMP
 HV0661  MODELED GRAVITY -    980,022.0   (mgal)                       NAVD 88
 HV0661
 HV0661  VERT ORDER      -  SECOND    CLASS 0
 HV0661
 HV0661.The horizontal coordinates were scaled from a map and have
 HV0661.an estimated accuracy of +/- 6 seconds.
 HV0661
 HV0661.The orthometric height was determined by differential leveling and
 HV0661.adjusted by the NATIONAL GEODETIC SURVEY
 HV0661.in June 1991.
 HV0661
 HV0661.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0661.GEOID18 height accuracy estimate available here.
 HV0661
 HV0661.Click photographs - Photos may exist for this station.
 HV0661
 HV0661.The dynamic height is computed by dividing the NAVD 88
 HV0661.geopotential number by the normal gravity value computed on the
 HV0661.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0661.degrees latitude (g = 980.6199 gals.).
 HV0661
 HV0661.The modeled gravity was interpolated from observed gravity values.
 HV0661
 HV0661;                    North         East    Units  Estimated Accuracy
 HV0661;SPC MD       -    68,010.      419,490.      MT  (+/- 180 meters Scaled)
 HV0661
 HV0661_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH445382(NAD 83)
 HV0661
 HV0661                          SUPERSEDED SURVEY CONTROL
 HV0661
 HV0661  NGVD 29 (11/26/84)    8.324  (m)           27.31   (f) ADJUSTED    2 0
 HV0661
 HV0661.Superseded values are not recommended for survey control.
 HV0661
 HV0661.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0661.See file dsdata.pdf to determine how the superseded data were derived.
 HV0661
 HV0661_MARKER: DB = BENCH MARK DISK
 HV0661_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0661_STAMPING: E 48 1942
 HV0661_MARK LOGO: CGS
 HV0661_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0661+STABILITY: SURFACE MOTION
 HV0661
 HV0661  HISTORY     - Date     Condition        Report By
 HV0661  HISTORY     - 1942     MONUMENTED       CGS
 HV0661
 HV0661                          STATION DESCRIPTION
 HV0661
 HV0661'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0661'8.5 MI S FROM CHAPTICO.
 HV0661'THIS MARK IS ABOUT 8.5 MILES SOUTH OF THE INTERSECTION AT CHAPTICO,
 HV0661'SAINT MARYS COUNTY, AT A T JUNCTION OF HIGHWAY 239 AND 242, ALONG
 HV0661'242, ABOUT 100 YARDS NORTH OF THE JUNCTION, 110.3 FEET NORTH OF
 HV0661'THE NORTHEAST CORNER OF THE LARGER OF TWO COTTAGES NEAR A GULF
 HV0661'FILLING STATION, 75.8 FEET EAST OF THE CENTER LINE OF THE HIGHWAY,
 HV0661'AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST IN LINE
 HV0661'WITH FOUR SMALL CEDAR TREES, BY A WHITE WOODEN POST STENCILED
 HV0661'USBM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0710 ***********************************************************************
 HV0710  DESIGNATION -  E 49
 HV0710  PID         -  HV0710
 HV0710  STATE/COUNTY-  MD/CHARLES
 HV0710  COUNTRY     -  US
 HV0710  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0710
 HV0710                         *CURRENT SURVEY CONTROL
 HV0710  ______________________________________________________________________
 HV0710* NAD 83(1986) POSITION- 38 28 11.     (N) 076 52 25.     (W)   SCALED
 HV0710* NAVD 88 ORTHO HEIGHT -    43.707 (meters)      143.40  (feet) ADJUSTED
 HV0710  ______________________________________________________________________
 HV0710  GEOID HEIGHT    -        -33.434 (meters)                     GEOID18
 HV0710  DYNAMIC HEIGHT  -         43.680 (meters)      143.31  (feet) COMP
 HV0710  MODELED GRAVITY -    980,011.7   (mgal)                       NAVD 88
 HV0710
 HV0710  VERT ORDER      -  SECOND    CLASS 0
 HV0710
 HV0710.The horizontal coordinates were scaled from a map and have
 HV0710.an estimated accuracy of +/- 6 seconds.
 HV0710
 HV0710.The orthometric height was determined by differential leveling and
 HV0710.adjusted by the NATIONAL GEODETIC SURVEY
 HV0710.in June 1991.
 HV0710
 HV0710.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0710.GEOID18 height accuracy estimate available here.
 HV0710
 HV0710.Click photographs - Photos may exist for this station.
 HV0710
 HV0710.The dynamic height is computed by dividing the NAVD 88
 HV0710.geopotential number by the normal gravity value computed on the
 HV0710.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0710.degrees latitude (g = 980.6199 gals.).
 HV0710
 HV0710.The modeled gravity was interpolated from observed gravity values.
 HV0710
 HV0710;                    North         East    Units  Estimated Accuracy
 HV0710;SPC MD       -    89,150.      411,030.      MT  (+/- 180 meters Scaled)
 HV0710
 HV0710_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH365595(NAD 83)
 HV0710
 HV0710                          SUPERSEDED SURVEY CONTROL
 HV0710
 HV0710  NGVD 29 (11/26/84)   43.980  (m)          144.29   (f) ADJUSTED    2 0
 HV0710
 HV0710.Superseded values are not recommended for survey control.
 HV0710
 HV0710.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0710.See file dsdata.pdf to determine how the superseded data were derived.
 HV0710
 HV0710_MARKER: DB = BENCH MARK DISK
 HV0710_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0710_SP_SET: CULVERT
 HV0710_STAMPING: E 49 1942
 HV0710_MARK LOGO: CGS
 HV0710_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0710
 HV0710  HISTORY     - Date     Condition        Report By
 HV0710  HISTORY     - 1942     MONUMENTED       CGS
 HV0710
 HV0710                          STATION DESCRIPTION
 HV0710
 HV0710'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0710'2 MI SE FROM DENTSVILLE.
 HV0710'THIS MARK IS ABOUT 1.1 MILES EAST OF THE INTERSECTION AT DENTVILLE,
 HV0710'CHARLES COUNTY, ALONG HIGHWAY NUMBER 6 AND 0.9 MILE SOUTH ALONG A
 HV0710'TAR ROAD, SET IN THE NORTH END OF THE WEST HEADWALL OF A CONCRETE
 HV0710'CULVERT, JUST SOUTH OF A FARM ROAD RUNNING EAST FROM THE TAR
 HV0710'ROAD, AND IS A STANDARD DISK SET IN THE HEADWALL OF A CULVERT
 HV0710'ABOUT LEVEL WITH THE PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0631 ***********************************************************************
 HV0631  DESIGNATION -  E 50
 HV0631  PID         -  HV0631
 HV0631  STATE/COUNTY-  MD/CHARLES
 HV0631  COUNTRY     -  US
 HV0631  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV0631
 HV0631                         *CURRENT SURVEY CONTROL
 HV0631  ______________________________________________________________________
 HV0631* NAD 83(1986) POSITION- 38 19 36.     (N) 076 53 53.     (W)   SCALED
 HV0631* NAVD 88 ORTHO HEIGHT -     5.762 (meters)       18.90  (feet) ADJUSTED
 HV0631  ______________________________________________________________________
 HV0631  GEOID HEIGHT    -        -33.609 (meters)                     GEOID18
 HV0631  DYNAMIC HEIGHT  -          5.758 (meters)       18.89  (feet) COMP
 HV0631  MODELED GRAVITY -    980,005.5   (mgal)                       NAVD 88
 HV0631
 HV0631  VERT ORDER      -  SECOND    CLASS 0
 HV0631
 HV0631.The horizontal coordinates were scaled from a map and have
 HV0631.an estimated accuracy of +/- 6 seconds.
 HV0631
 HV0631.The orthometric height was determined by differential leveling and
 HV0631.adjusted by the NATIONAL GEODETIC SURVEY
 HV0631.in June 1991.
 HV0631
 HV0631.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0631.GEOID18 height accuracy estimate available here.
 HV0631
 HV0631.Click photographs - Photos may exist for this station.
 HV0631
 HV0631.The dynamic height is computed by dividing the NAVD 88
 HV0631.geopotential number by the normal gravity value computed on the
 HV0631.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0631.degrees latitude (g = 980.6199 gals.).
 HV0631
 HV0631.The modeled gravity was interpolated from observed gravity values.
 HV0631
 HV0631;                    North         East    Units  Estimated Accuracy
 HV0631;SPC MD       -    73,270.      408,910.      MT  (+/- 180 meters Scaled)
 HV0631
 HV0631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH340437(NAD 83)
 HV0631
 HV0631                          SUPERSEDED SURVEY CONTROL
 HV0631
 HV0631  NGVD 29 (11/26/84)    6.026  (m)           19.77   (f) ADJUSTED    2 0
 HV0631
 HV0631.Superseded values are not recommended for survey control.
 HV0631
 HV0631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0631.See file dsdata.pdf to determine how the superseded data were derived.
 HV0631
 HV0631_MARKER: DB = BENCH MARK DISK
 HV0631_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0631_SP_SET: GATE PILLAR BASE
 HV0631_STAMPING: E 50 1942
 HV0631_MARK LOGO: CGS
 HV0631_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0631
 HV0631  HISTORY     - Date     Condition        Report By
 HV0631  HISTORY     - 1942     MONUMENTED       CGS
 HV0631
 HV0631                          STATION DESCRIPTION
 HV0631
 HV0631'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0631'0.5 MI N FROM TOMPKINVILLE.
 HV0631'THIS MARK IS ABOUT 0.5 MILE NORTH ALONG HIGHWAY 3 FROM THE JUNCTION
 HV0631'AT TOMPKINVILLE, CHARLES COUNTY, AT THE ENTRANCE TO THE MOUNT
 HV0631'VICTORIA PLANTATION, SET IN THE BASE OF THE NORTHWESTERLY GATE
 HV0631'PILLAR ABOUT 5 FEET BELOW THE BRONZE LETTERS MR. VICTORIA AND
 HV0631'IS A STANDARD DISK SET IN A DRILL HOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0269 ***********************************************************************
 HV0269  DESIGNATION -  E 51
 HV0269  PID         -  HV0269
 HV0269  STATE/COUNTY-  MD/DORCHESTER
 HV0269  COUNTRY     -  US
 HV0269  USGS QUAD   -  CAMBRIDGE (2016)
 HV0269
 HV0269                         *CURRENT SURVEY CONTROL
 HV0269  ______________________________________________________________________
 HV0269* NAD 83(1986) POSITION- 38 32 10.     (N) 076 06 39.     (W)   SCALED
 HV0269* NAVD 88 ORTHO HEIGHT -     3.226 (meters)       10.58  (feet) ADJUSTED
 HV0269  ______________________________________________________________________
 HV0269  GEOID HEIGHT    -        -35.033 (meters)                     GEOID18
 HV0269  DYNAMIC HEIGHT  -          3.224 (meters)       10.58  (feet) COMP
 HV0269  MODELED GRAVITY -    980,015.1   (mgal)                       NAVD 88
 HV0269
 HV0269  VERT ORDER      -  SECOND    CLASS 0
 HV0269
 HV0269.The horizontal coordinates were scaled from a map and have
 HV0269.an estimated accuracy of +/- 6 seconds.
 HV0269
 HV0269.The orthometric height was determined by differential leveling and
 HV0269.adjusted by the NATIONAL GEODETIC SURVEY
 HV0269.in June 1991.
 HV0269
 HV0269.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0269.GEOID18 height accuracy estimate available here.
 HV0269
 HV0269.Click photographs - Photos may exist for this station.
 HV0269
 HV0269.The dynamic height is computed by dividing the NAVD 88
 HV0269.geopotential number by the normal gravity value computed on the
 HV0269.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0269.degrees latitude (g = 980.6199 gals.).
 HV0269
 HV0269.The modeled gravity was interpolated from observed gravity values.
 HV0269
 HV0269;                    North         East    Units  Estimated Accuracy
 HV0269;SPC MD       -    96,890.      477,520.      MT  (+/- 180 meters Scaled)
 HV0269
 HV0269_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH031658(NAD 83)
 HV0269
 HV0269                          SUPERSEDED SURVEY CONTROL
 HV0269
 HV0269  NGVD 29 (02/24/95)    3.458  (m)           11.35   (f) ADJUSTED    2 0
 HV0269  NGVD 29 (11/26/84)    3.464  (m)           11.36   (f) SUPERSEDED  2 0
 HV0269
 HV0269.Superseded values are not recommended for survey control.
 HV0269
 HV0269.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0269.See file dsdata.pdf to determine how the superseded data were derived.
 HV0269
 HV0269_MARKER: DB = BENCH MARK DISK
 HV0269_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0269_SP_SET: CULVERT
 HV0269_STAMPING: E 51 1942
 HV0269_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0269
 HV0269  HISTORY     - Date     Condition        Report By
 HV0269  HISTORY     - 1942     MONUMENTED       CGS
 HV0269  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0269
 HV0269                          STATION DESCRIPTION
 HV0269
 HV0269'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0269'3 MI SW FROM CAMBRIDGE.
 HV0269'THIS MARK IS ABOUT 3 MILES SOUTHWEST ALONG HIGHWAY 16 FROM THE
 HV0269'INTERSECTION OF RACE AND WASHINGTON STREETS IN CAMBRIDGE, DORCHESTER
 HV0269'COUNTY, AT THE JUNCTION OF A GRAVEL ROAD RUNNING WEST FROM THE
 HV0269'HIGHWAY, SET IN THE EAST HEADWALL OF A LARGE CONCRETE CULVERT,
 HV0269'ABOUT 2 FEET HIGHER THAN THE LEVEL OF THE PAVEMENT, NEAR POWER POLE
 HV0269'NUMBER 52, AND IS A STANDARD DISK SET IN A DRILL HOLE.
 HV0269
 HV0269                          STATION RECOVERY (1971)
 HV0269
 HV0269'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0269'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0469 ***********************************************************************
 HV0469  DESIGNATION -  E 52
 HV0469  PID         -  HV0469
 HV0469  STATE/COUNTY-  MD/DORCHESTER
 HV0469  COUNTRY     -  US
 HV0469  USGS QUAD   -  HONGA (2016)
 HV0469
 HV0469                         *CURRENT SURVEY CONTROL
 HV0469  ______________________________________________________________________
 HV0469* NAD 83(1986) POSITION- 38 22 28.     (N) 076 09 03.     (W)   SCALED
 HV0469* NAVD 88 ORTHO HEIGHT -     0.712 (meters)        2.34  (feet) ADJUSTED
 HV0469  ______________________________________________________________________
 HV0469  GEOID HEIGHT    -        -35.224 (meters)                     GEOID18
 HV0469  DYNAMIC HEIGHT  -          0.711 (meters)        2.33  (feet) COMP
 HV0469  MODELED GRAVITY -    979,998.9   (mgal)                       NAVD 88
 HV0469
 HV0469  VERT ORDER      -  SECOND    CLASS 0
 HV0469
 HV0469.The horizontal coordinates were scaled from a map and have
 HV0469.an estimated accuracy of +/- 6 seconds.
 HV0469
 HV0469.The orthometric height was determined by differential leveling and
 HV0469.adjusted by the NATIONAL GEODETIC SURVEY
 HV0469.in June 1991.
 HV0469
 HV0469.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0469.GEOID18 height accuracy estimate available here.
 HV0469
 HV0469.Click photographs - Photos may exist for this station.
 HV0469
 HV0469.The dynamic height is computed by dividing the NAVD 88
 HV0469.geopotential number by the normal gravity value computed on the
 HV0469.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0469.degrees latitude (g = 980.6199 gals.).
 HV0469
 HV0469.The modeled gravity was interpolated from observed gravity values.
 HV0469
 HV0469;                    North         East    Units  Estimated Accuracy
 HV0469;SPC MD       -    78,910.      474,200.      MT  (+/- 180 meters Scaled)
 HV0469
 HV0469_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH994479(NAD 83)
 HV0469
 HV0469                          SUPERSEDED SURVEY CONTROL
 HV0469
 HV0469  NGVD 29 (11/26/84)    0.935  (m)            3.07   (f) ADJUSTED    2 0
 HV0469
 HV0469.Superseded values are not recommended for survey control.
 HV0469
 HV0469.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0469.See file dsdata.pdf to determine how the superseded data were derived.
 HV0469
 HV0469_MARKER: DB = BENCH MARK DISK
 HV0469_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0469_STAMPING: E 52 1942
 HV0469_MARK LOGO: CGS
 HV0469_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0469+STABILITY: SURFACE MOTION
 HV0469
 HV0469  HISTORY     - Date     Condition        Report By
 HV0469  HISTORY     - 1942     MONUMENTED       CGS
 HV0469
 HV0469                          STATION DESCRIPTION
 HV0469
 HV0469'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0469'5.1 MI SE FROM GOLDEN HILL.
 HV0469'THIS MARK IS ALONG HIGHWAY 336 ABOUT 5.1 MILES SOUTHEAST FROM THE
 HV0469'POST OFFICE AT GOLDEN HILL, DORCHESTER COUNTY, ACROSS THE
 HV0469'HIGHWAY FROM AN IRON HIGHWAY MARKER NUMBER 27, 26 FEET NORTH OF
 HV0469'THE CENTER LINE OF THE HIGHWAY, AT THE SOUTHEAST CORNER OF A
 HV0469'CULTIVATED FIELD, ABOUT 2 FEET NORTH OF THE SOUTH WIRE FENCE,
 HV0469'AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0068 ***********************************************************************
 HV0068  DESIGNATION -  E 53 RESET
 HV0068  PID         -  HV0068
 HV0068  STATE/COUNTY-  MD/TALBOT
 HV0068  COUNTRY     -  US
 HV0068  USGS QUAD   -  SAINT MICHAELS (2016)
 HV0068
 HV0068                         *CURRENT SURVEY CONTROL
 HV0068  ______________________________________________________________________
 HV0068* NAD 83(1986) POSITION- 38 45 33.     (N) 076 08 59.     (W)   SCALED
 HV0068* NAVD 88 ORTHO HEIGHT -     3.16  (meters)       10.4   (feet) RESET
 HV0068  ______________________________________________________________________
 HV0068  GEOID HEIGHT    -        -34.557 (meters)                     GEOID18
 HV0068  VERT ORDER      -  THIRD
 HV0068
 HV0068.The horizontal coordinates were scaled from a map and have
 HV0068.an estimated accuracy of +/- 6 seconds.
 HV0068
 HV0068.The orthometric height was computed from unverified reset data.
 HV0068
 HV0068.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0068.GEOID18 height accuracy estimate available here.
 HV0068
 HV0068.Click photographs - Photos may exist for this station.
 HV0068
 HV0068;                    North         East    Units  Estimated Accuracy
 HV0068;SPC MD       -   121,620.      473,900.      MT  (+/- 180 meters Scaled)
 HV0068
 HV0068_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH001906(NAD 83)
 HV0068
 HV0068                          SUPERSEDED SURVEY CONTROL
 HV0068
 HV0068  NGVD 29 (??/??/??)    3.39   (m)           11.1    (f) RESET       3  
 HV0068
 HV0068.Superseded values are not recommended for survey control.
 HV0068
 HV0068.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0068.See file dsdata.pdf to determine how the superseded data were derived.
 HV0068
 HV0068_MARKER: DB = BENCH MARK DISK
 HV0068_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0068_STAMPING: E 53 RESET 1954
 HV0068_MARK LOGO: CGS
 HV0068_PROJECTION: PROJECTING 8 CENTIMETERS
 HV0068_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0068+STABILITY: SURFACE MOTION
 HV0068
 HV0068  HISTORY     - Date     Condition        Report By
 HV0068  HISTORY     - 1954     MONUMENTED       MDBCSM
 HV0068  HISTORY     - 19970106 MARK NOT FOUND   USPSQD
 HV0068
 HV0068                          STATION DESCRIPTION
 HV0068
 HV0068'DESCRIBED BY MD BUR SURV AND MAPS 1954
 HV0068'5.1 MI W FROM EASTON.
 HV0068'5.1 MILES WEST ALONG STATE HIGHWAY 33 FROM THE COURTHOUSE AT
 HV0068'EASTON, TALBOT COUNTY, 0.4 MILE SOUTHWEST OF A TEXACO SERVICE
 HV0068'STATION, 132 FEET WEST OF A FENCE CORNER OPPOSITE A CULVERT UNDER
 HV0068'THE HIGHWAY, 61.5 FEET NORTH OF THE HIGHWAY, AND 1 FOOT SOUTH
 HV0068'OF A FENCE.  A STANDARD DISK, STAMPED E 53 RESET 1954 AND SET
 HV0068'IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE GROUND.
 HV0068
 HV0068                          STATION RECOVERY (1997)
 HV0068
 HV0068'RECOVERY NOTE BY US POWER SQUADRON 1997
 HV0068'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3363 ***********************************************************************
 JV3363  DESIGNATION -  E 54
 JV3363  PID         -  JV3363
 JV3363  STATE/COUNTY-  MD/WASHINGTON
 JV3363  COUNTRY     -  US
 JV3363  USGS QUAD   -  HAGERSTOWN (2016)
 JV3363
 JV3363                         *CURRENT SURVEY CONTROL
 JV3363  ______________________________________________________________________
 JV3363* NAD 83(1986) POSITION- 39 41 12.     (N) 077 39 33.     (W)   SCALED
 JV3363* NAVD 88 ORTHO HEIGHT -   174.570 (meters)      572.74  (feet) ADJUSTED
 JV3363  ______________________________________________________________________
 JV3363  GEOID HEIGHT    -        -34.098 (meters)                     GEOID18
 JV3363  DYNAMIC HEIGHT  -        174.468 (meters)      572.40  (feet) COMP
 JV3363  MODELED GRAVITY -    980,040.7   (mgal)                       NAVD 88
 JV3363
 JV3363  VERT ORDER      -  SECOND    CLASS 0
 JV3363
 JV3363.The horizontal coordinates were scaled from a map and have
 JV3363.an estimated accuracy of +/- 6 seconds.
 JV3363
 JV3363.The orthometric height was determined by differential leveling and
 JV3363.adjusted by the NATIONAL GEODETIC SURVEY
 JV3363.in June 1991.
 JV3363
 JV3363.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3363.GEOID18 height accuracy estimate available here.
 JV3363
 JV3363.Click photographs - Photos may exist for this station.
 JV3363
 JV3363.The dynamic height is computed by dividing the NAVD 88
 JV3363.geopotential number by the normal gravity value computed on the
 JV3363.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3363.degrees latitude (g = 980.6199 gals.).
 JV3363
 JV3363.The modeled gravity was interpolated from observed gravity values.
 JV3363
 JV3363;                    North         East    Units  Estimated Accuracy
 JV3363;SPC MD       -   224,450.      343,450.      MT  (+/- 180 meters Scaled)
 JV3363
 JV3363_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ719963(NAD 83)
 JV3363
 JV3363                          SUPERSEDED SURVEY CONTROL
 JV3363
 JV3363  NGVD 29 (11/26/84)  174.756  (m)          573.35   (f) ADJUSTED    2 0
 JV3363
 JV3363.Superseded values are not recommended for survey control.
 JV3363
 JV3363.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3363.See file dsdata.pdf to determine how the superseded data were derived.
 JV3363
 JV3363_MARKER: DB = BENCH MARK DISK
 JV3363_SETTING: 66 = SET IN ROCK OUTCROP
 JV3363_STAMPING: E 54 1942
 JV3363_MARK LOGO: CGS
 JV3363_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3363+STABILITY: POSITION/ELEVATION WELL
 JV3363
 JV3363  HISTORY     - Date     Condition        Report By
 JV3363  HISTORY     - 1942     MONUMENTED       CGS
 JV3363  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3363
 JV3363                          STATION DESCRIPTION
 JV3363
 JV3363'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3363'5.4 MI NE FROM HAGERSTOWN.
 JV3363'5.4 MILES NORTHEAST ALONG STATE HIGHWAY 60 FROM THE COURTHOUSE AT
 JV3363'HAGERSTOWN, WASHINGTON COUNTY, AT THE INTERSECTION OF THE HIGHWAY
 JV3363'AND A COUNTRY ROAD LEADING NORTHEAST, 49 FEET NORTHWEST OF THE
 JV3363'CENTERLINE OF THE COUNTRY ROAD, 36 FEET NORTH OF THE CENTERLINE
 JV3363'OF THE HIGHWAY, 25.4 FEET NORTH OF A TELEPHONE POLE WHICH IS 2
 JV3363'FEET SOUTH OF A FENCE CORNER, 13.8 FEET NORTHWEST OF A FENCE
 JV3363'RUNNING NORTHEAST ALONG THE COUNTRY ROAD, AND IN A ROCK OUTCROP.
 JV3363'A STANDARD DISK, STAMPED E 54 1942.
 JV3363
 JV3363                          STATION RECOVERY (1998)
 JV3363
 JV3363'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3363'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE DESCRIBED
 JV3363'LOCATION IS NOW A GRASS LAWN AND NO ROCK OUTCROPS ARE VISIBLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3364 ***********************************************************************
 JV3364  DESIGNATION -  E 54 RESET
 JV3364  PID         -  JV3364
 JV3364  STATE/COUNTY-  MD/WASHINGTON
 JV3364  COUNTRY     -  US
 JV3364  USGS QUAD   -  HAGERSTOWN (2016)
 JV3364
 JV3364                         *CURRENT SURVEY CONTROL
 JV3364  ______________________________________________________________________
 JV3364* NAD 83(1986) POSITION- 39 41 12.     (N) 077 39 33.     (W)   SCALED
 JV3364* NAVD 88 ORTHO HEIGHT -   174.01  (meters)      570.9   (feet) RESET
 JV3364  ______________________________________________________________________
 JV3364  GEOID HEIGHT    -        -34.098 (meters)                     GEOID18
 JV3364  VERT ORDER      -  THIRD
 JV3364
 JV3364.The horizontal coordinates were scaled from a map and have
 JV3364.an estimated accuracy of +/- 6 seconds.
 JV3364
 JV3364.The orthometric height was computed from unverified reset data.
 JV3364
 JV3364.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3364.GEOID18 height accuracy estimate available here.
 JV3364
 JV3364.Click photographs - Photos may exist for this station.
 JV3364
 JV3364;                    North         East    Units  Estimated Accuracy
 JV3364;SPC MD       -   224,450.      343,450.      MT  (+/- 180 meters Scaled)
 JV3364
 JV3364_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ719963(NAD 83)
 JV3364
 JV3364                          SUPERSEDED SURVEY CONTROL
 JV3364
 JV3364  NGVD 29 (??/??/??)  174.20   (m)          571.5    (f) RESET       3  
 JV3364
 JV3364.Superseded values are not recommended for survey control.
 JV3364
 JV3364.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3364.See file dsdata.pdf to determine how the superseded data were derived.
 JV3364
 JV3364_MARKER: DB = BENCH MARK DISK
 JV3364_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV3364_SP_SET: CULVERT HEADWALL
 JV3364_STAMPING: E 54 RESET 1967
 JV3364_MARK LOGO: CGS
 JV3364_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3364+STABILITY: SURFACE MOTION
 JV3364
 JV3364  HISTORY     - Date     Condition        Report By
 JV3364  HISTORY     - 1967     MONUMENTED       MD-043
 JV3364  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3364
 JV3364                          STATION DESCRIPTION
 JV3364
 JV3364'DESCRIBED BY WASHINGTON COUNTY MARYLAND 1967
 JV3364'5.4 MI NE FROM HAGERSTOWN.
 JV3364'ABOUT 5.4 MILES NORTHEAST ALONG STATE HIGHWAY 60 FROM THE COURTHOUSE
 JV3364'AT HAGERSTOWN, 29 FEET EAST-NORTHEAST OF THE CENTER LINE OF
 JV3364'A COUNTY ROAD, 35 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 29
 JV3364'FEET SOUTH-SOUTHWEST OF A TELEPHONE POLE, AND SET IN THE TOP OF A
 JV3364'CONCRETE HEADWALL OF A PIPE CULVERT IN THE NORTHEAST CORNER OF THE
 JV3364'INTERSECTION OF THE HIGHWAY AND A COUNTY ROAD KNOWN AS MILLER
 JV3364'CHURCH ROAD LEADING NORTHEAST.
 JV3364
 JV3364                          STATION RECOVERY (1998)
 JV3364
 JV3364'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3364'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE HEADWALL HAS BEEN
 JV3364'REMOVED AND THE AREA HAS BEEN PAVED FOR ROAD IMPROVEMENTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0390 ***********************************************************************
 HU0390  DESIGNATION -  E 56
 HU0390  PID         -  HU0390
 HU0390  STATE/COUNTY-  MD/WORCESTER
 HU0390  COUNTRY     -  US
 HU0390  USGS QUAD   -  BERLIN (2016)
 HU0390
 HU0390                         *CURRENT SURVEY CONTROL
 HU0390  ______________________________________________________________________
 HU0390* NAD 83(1986) POSITION- 38 17 03.0    (N) 075 09 13.2    (W)   HD_HELD2
 HU0390* NAVD 88 ORTHO HEIGHT -     3.054 (meters)       10.02  (feet) ADJUSTED
 HU0390  ______________________________________________________________________
 HU0390  GEOID HEIGHT    -        -36.103 (meters)                     GEOID18
 HU0390  DYNAMIC HEIGHT  -          3.052 (meters)       10.01  (feet) COMP
 HU0390  MODELED GRAVITY -    980,001.5   (mgal)                       NAVD 88
 HU0390
 HU0390  VERT ORDER      -  SECOND    CLASS 0
 HU0390
 HU0390.The horizontal coordinates were established by autonomous hand held GPS
 HU0390.observations and have an estimated accuracy of +/- 10 meters.
 HU0390
 HU0390.The orthometric height was determined by differential leveling and
 HU0390.adjusted by the NATIONAL GEODETIC SURVEY
 HU0390.in June 1991.
 HU0390
 HU0390.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0390.GEOID18 height accuracy estimate available here.
 HU0390
 HU0390.Click photographs - Photos may exist for this station.
 HU0390
 HU0390.The dynamic height is computed by dividing the NAVD 88
 HU0390.geopotential number by the normal gravity value computed on the
 HU0390.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0390.degrees latitude (g = 980.6199 gals.).
 HU0390
 HU0390.The modeled gravity was interpolated from observed gravity values.
 HU0390
 HU0390;                    North         East    Units  Estimated Accuracy
 HU0390;SPC MD       -    70,179.      561,530.      MT  (+/- 10 meters HH2 GPS)
 HU0390
 HU0390_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8656037355(NAD 83)
 HU0390
 HU0390                          SUPERSEDED SURVEY CONTROL
 HU0390
 HU0390  NGVD 29 (11/26/84)    3.291  (m)           10.80   (f) ADJUSTED    2 0
 HU0390
 HU0390.Superseded values are not recommended for survey control.
 HU0390
 HU0390.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0390.See file dsdata.pdf to determine how the superseded data were derived.
 HU0390
 HU0390_MARKER: DB = BENCH MARK DISK
 HU0390_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0390_STAMPING: E 56 1942
 HU0390_MARK LOGO: CGS
 HU0390_PROJECTION: PROJECTING 13 CENTIMETERS
 HU0390_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0390+STABILITY: SURFACE MOTION
 HU0390_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0390+SATELLITE: SATELLITE OBSERVATIONS - September 21, 2023
 HU0390
 HU0390  HISTORY     - Date     Condition        Report By
 HU0390  HISTORY     - 1942     MONUMENTED       CGS
 HU0390  HISTORY     - 1977     GOOD             NGS
 HU0390  HISTORY     - 20001021 GOOD             NGS
 HU0390  HISTORY     - 20031230 GOOD             USPSQD
 HU0390  HISTORY     - 20051203 GOOD             USPSQD
 HU0390  HISTORY     - 20230921 GOOD             BASE9
 HU0390
 HU0390                          STATION DESCRIPTION
 HU0390
 HU0390'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0390'4.7 MI SE FROM BERLIN.
 HU0390'4.7 MILES SOUTHEAST ALONG STATE HIGHWAY 376 FROM THE CALVIN B.
 HU0390'TAYLOR BANKING CO. AT BERLIN, THENCE 0.4 MILE SOUTH ALONG A GRAVEL
 HU0390'ROAD, ABOUT 100 YARDS NORTH OF A TWO-STORY UNPAINTED FARMHOUSE,
 HU0390'IN THE SOUTHWEST CORNER OF A PEACH ORCHARD, 33.5 FEET WEST OF
 HU0390'THE CENTERLINE OF THE GRAVEL ROAD, 9.0 FEET WEST OF A 28-INCH WHITE
 HU0390'OAK TREE, AND 4 FEET HIGHER THAN THE ROAD.  A STANDARD DISK,
 HU0390'STAMPED E 56 1942 AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 HU0390'ABOUT 6 INCHES ABOVE GROUND.
 HU0390
 HU0390                          STATION RECOVERY (1977)
 HU0390
 HU0390'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU0390'RECOVERED IN GOOD CONDITION.
 HU0390
 HU0390                          STATION RECOVERY (2000)
 HU0390
 HU0390'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (DRD)
 HU0390'RECOVERED IN GOOD CONDITION.
 HU0390
 HU0390                          STATION RECOVERY (2003)
 HU0390
 HU0390'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0390'RECOVERED IN GOOD CONDITION.
 HU0390
 HU0390                          STATION RECOVERY (2005)
 HU0390
 HU0390'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU0390'RECOVERED IN GOOD CONDITION.
 HU0390
 HU0390                          STATION RECOVERY (2023)
 HU0390
 HU0390'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2023 (DRD)
 HU0390'THE MARK IS SET IN THE SOUTHEAST CORNER OF THE FRONT YARD OF HOUSE
 HU0390'8201 STEPHEN DECATOR HIGHWAY.  THE CONCRETE ON THE EAST SIDE HAS BEEN
 HU0390'CHIPPED, PROBABLY BY MOWING.  THE MARK IS 0.36 M (1.2 FT) EAST OF A
 HU0390'CARSONITE WITNESS POST AND 5.33 M (17.5 FT) EAST OF THE CENTER OF A
 HU0390'UTILITY POLE LABELED 9 A.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0584 ***********************************************************************
 HU0584  DESIGNATION -  E 57
 HU0584  PID         -  HU0584
 HU0584  STATE/COUNTY-  MD/SOMERSET
 HU0584  COUNTRY     -  US
 HU0584  USGS QUAD   -  DEAL ISLAND (2016)
 HU0584
 HU0584                         *CURRENT SURVEY CONTROL
 HU0584  ______________________________________________________________________
 HU0584* NAD 83(1986) POSITION- 38 08 47.     (N) 075 56 37.     (W)   SCALED
 HU0584* NAVD 88 ORTHO HEIGHT -     0.742 (meters)        2.43  (feet) ADJUSTED
 HU0584  ______________________________________________________________________
 HU0584  GEOID HEIGHT    -        -35.817 (meters)                     GEOID18
 HU0584  DYNAMIC HEIGHT  -          0.742 (meters)        2.43  (feet) COMP
 HU0584  MODELED GRAVITY -    979,983.8   (mgal)                       NAVD 88
 HU0584
 HU0584  VERT ORDER      -  FIRST     CLASS I
 HU0584
 HU0584.The horizontal coordinates were scaled from a map and have
 HU0584.an estimated accuracy of +/- 6 seconds.
 HU0584
 HU0584.The orthometric height was determined by differential leveling and
 HU0584.adjusted by the NATIONAL GEODETIC SURVEY
 HU0584.in June 1991.
 HU0584
 HU0584.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0584.GEOID18 height accuracy estimate available here.
 HU0584
 HU0584.Click photographs - Photos may exist for this station.
 HU0584
 HU0584.The dynamic height is computed by dividing the NAVD 88
 HU0584.geopotential number by the normal gravity value computed on the
 HU0584.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0584.degrees latitude (g = 980.6199 gals.).
 HU0584
 HU0584.The modeled gravity was interpolated from observed gravity values.
 HU0584
 HU0584;                    North         East    Units  Estimated Accuracy
 HU0584;SPC MD       -    53,790.      492,600.      MT  (+/- 180 meters Scaled)
 HU0584
 HU0584_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH173224(NAD 83)
 HU0584
 HU0584                          SUPERSEDED SURVEY CONTROL
 HU0584
 HU0584  NGVD 29 (11/26/84)    1.000  (m)            3.28   (f) ADJUSTED    1 1
 HU0584
 HU0584.Superseded values are not recommended for survey control.
 HU0584
 HU0584.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0584.See file dsdata.pdf to determine how the superseded data were derived.
 HU0584
 HU0584_MARKER: DB = BENCH MARK DISK
 HU0584_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0584_STAMPING: E 57 1942
 HU0584_MARK LOGO: CGS
 HU0584_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0584_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0584+STABILITY: SURFACE MOTION
 HU0584_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0584+SATELLITE: SATELLITE OBSERVATIONS - October 31, 1988
 HU0584
 HU0584  HISTORY     - Date     Condition        Report By
 HU0584  HISTORY     - 1942     MONUMENTED       CGS
 HU0584  HISTORY     - 1963     GOOD             CGS
 HU0584  HISTORY     - 19881031 GOOD             MDSHA
 HU0584
 HU0584                          STATION DESCRIPTION
 HU0584
 HU0584'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0584'4.9 MI W FROM DAMES QUARTER.
 HU0584'4.9 MILES WEST ALONG STATE HIGHWAY 363 FROM THE POST OFFICE AT
 HU0584'DAMES QUARTER, ON DEAL ISLAND, AT THE WEST CORNER OF A CHURCH, 67
 HU0584'FEET SOUTHEAST OF CENTER LINE OF HIGHWAY, 3.5 FEET SOUTHWEST OF
 HU0584'WEST CORNER OF THE CHURCH, 1/2 FEET BELOW LEVEL OF HIGHWAY, AND
 HU0584'SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES.
 HU0584
 HU0584                          STATION RECOVERY (1988)
 HU0584
 HU0584'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1988
 HU0584'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0710 ***********************************************************************
 HU0710  DESIGNATION -  E 58
 HU0710  PID         -  HU0710
 HU0710  STATE/COUNTY-  MD/WICOMICO
 HU0710  COUNTRY     -  US
 HU0710  USGS QUAD   -  SALISBURY (2016)
 HU0710
 HU0710                         *CURRENT SURVEY CONTROL
 HU0710  ______________________________________________________________________
 HU0710* NAD 83(1986) POSITION- 38 18 10.     (N) 075 31 48.     (W)   SCALED
 HU0710* NAVD 88 ORTHO HEIGHT -    17.159 (meters)       56.30  (feet) ADJUSTED
 HU0710  ______________________________________________________________________
 HU0710  GEOID HEIGHT    -        -35.967 (meters)                     GEOID18
 HU0710  DYNAMIC HEIGHT  -         17.149 (meters)       56.26  (feet) COMP
 HU0710  MODELED GRAVITY -    979,998.8   (mgal)                       NAVD 88
 HU0710
 HU0710  VERT ORDER      -  SECOND    CLASS 0
 HU0710
 HU0710.The horizontal coordinates were scaled from a map and have
 HU0710.an estimated accuracy of +/- 6 seconds.
 HU0710
 HU0710.The orthometric height was determined by differential leveling and
 HU0710.adjusted by the NATIONAL GEODETIC SURVEY
 HU0710.in June 1991.
 HU0710
 HU0710.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0710.GEOID18 height accuracy estimate available here.
 HU0710
 HU0710.Click photographs - Photos may exist for this station.
 HU0710
 HU0710.The dynamic height is computed by dividing the NAVD 88
 HU0710.geopotential number by the normal gravity value computed on the
 HU0710.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0710.degrees latitude (g = 980.6199 gals.).
 HU0710
 HU0710.The modeled gravity was interpolated from observed gravity values.
 HU0710
 HU0710;                    North         East    Units  Estimated Accuracy
 HU0710;SPC MD       -    71,650.      528,580.      MT  (+/- 180 meters Scaled)
 HU0710
 HU0710_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH536395(NAD 83)
 HU0710
 HU0710                          SUPERSEDED SURVEY CONTROL
 HU0710
 HU0710  NGVD 29 (11/26/84)   17.405  (m)           57.10   (f) ADJUSTED    2 0
 HU0710
 HU0710.Superseded values are not recommended for survey control.
 HU0710
 HU0710.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0710.See file dsdata.pdf to determine how the superseded data were derived.
 HU0710
 HU0710_MARKER: DB = BENCH MARK DISK
 HU0710_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0710_STAMPING: E 58 1942
 HU0710_MARK LOGO: CGS
 HU0710_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0710+STABILITY: SURFACE MOTION
 HU0710
 HU0710  HISTORY     - Date     Condition        Report By
 HU0710  HISTORY     - 1942     MONUMENTED       CGS
 HU0710  HISTORY     - 1962     GOOD             CGS
 HU0710  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0710
 HU0710                          STATION DESCRIPTION
 HU0710
 HU0710'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0710'5.8 MI SE FROM SALISBURY.
 HU0710'5.8 MILES SOUTHEAST ALONG STATE HIGHWAY 12 FROM THE PENNSYLVANIA
 HU0710'RAILROAD UNDERPASS AT SALISBURY, 61.3 FEET SOUTHWEST ACROSS THE
 HU0710'HIGHWAY FROM POWER-TRANSMISSION LINE POLE 86, 30.4 FEET SOUTHWEST
 HU0710'OF THE CENTERLINE OF THE HIGHWAY, 7.9 FEET SOUTHEAST OF A 12-INCH
 HU0710'PINE TREE, AND ABOUT 3 FEET HIGHER THAN THE HIGHWAY.  A STANDARD
 HU0710'DISK, STAMPED E 58 1942 AND SET IN THE TOP OF A CONCRETE POST.
 HU0710'NOTE-- A STEEL WITNESS POST WAS SET 1 FOOT SOUTHWEST OF MARK.
 HU0710
 HU0710                          STATION RECOVERY (1997)
 HU0710
 HU0710'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0710'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0476 ***********************************************************************
 HV0476  DESIGNATION -  E 59
 HV0476  PID         -  HV0476
 HV0476  STATE/COUNTY-  MD/DORCHESTER
 HV0476  COUNTRY     -  US
 HV0476  USGS QUAD   -  WINGATE (2016)
 HV0476
 HV0476                         *CURRENT SURVEY CONTROL
 HV0476  ______________________________________________________________________
 HV0476* NAD 83(1986) POSITION- 38 18 16.8    (N) 076 06 18.5    (W)   HD_HELD2
 HV0476* NAVD 88 ORTHO HEIGHT -     1.982 (meters)        6.50  (feet) ADJUSTED
 HV0476  ______________________________________________________________________
 HV0476  GEOID HEIGHT    -        -35.410 (meters)                     GEOID18
 HV0476  DYNAMIC HEIGHT  -          1.981 (meters)        6.50  (feet) COMP
 HV0476  MODELED GRAVITY -    979,994.7   (mgal)                       NAVD 88
 HV0476
 HV0476  VERT ORDER      -  SECOND    CLASS 0
 HV0476
 HV0476.The horizontal coordinates were established by autonomous hand held GPS
 HV0476.observations and have an estimated accuracy of +/- 10 meters.
 HV0476
 HV0476.The orthometric height was determined by differential leveling and
 HV0476.adjusted by the NATIONAL GEODETIC SURVEY
 HV0476.in June 1991.
 HV0476
 HV0476.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0476.GEOID18 height accuracy estimate available here.
 HV0476
 HV0476.Click photographs - Photos may exist for this station.
 HV0476
 HV0476.The dynamic height is computed by dividing the NAVD 88
 HV0476.geopotential number by the normal gravity value computed on the
 HV0476.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0476.degrees latitude (g = 980.6199 gals.).
 HV0476
 HV0476.The modeled gravity was interpolated from observed gravity values.
 HV0476
 HV0476;                    North         East    Units  Estimated Accuracy
 HV0476;SPC MD       -    71,204.      478,270.      MT  (+/- 10 meters HH2 GPS)
 HV0476
 HV0476_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0337340196(NAD 83)
 HV0476
 HV0476                          SUPERSEDED SURVEY CONTROL
 HV0476
 HV0476  NGVD 29 (11/26/84)    2.207  (m)            7.24   (f) ADJUSTED    2 0
 HV0476
 HV0476.Superseded values are not recommended for survey control.
 HV0476
 HV0476.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0476.See file dsdata.pdf to determine how the superseded data were derived.
 HV0476
 HV0476_MARKER: DB = BENCH MARK DISK
 HV0476_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0476_SP_SET: BUILDING
 HV0476_STAMPING: E 59 1942
 HV0476_MARK LOGO: CGS
 HV0476_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0476_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0476+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2014
 HV0476
 HV0476  HISTORY     - Date     Condition        Report By
 HV0476  HISTORY     - 1942     MONUMENTED       CGS
 HV0476  HISTORY     - 20140328 GOOD             ARCSHE
 HV0476
 HV0476                          STATION DESCRIPTION
 HV0476
 HV0476'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0476'AT WINGATE.
 HV0476'THIS MARK IS AT WINGATE, DORCHESTER COUNTY, SET VERTICALLY IN THE
 HV0476'WEST FACE OF THE COUNTY TRUST COMPANY BUILDING, ABOUT 6 INCHES
 HV0476'SOUTH OF THE SOUTH DOOR FACEING, AT THE ENTRANCE, ABOUT 4 FEET
 HV0476'HIGHER THAN THE GROUND AND IS A STANDARD DISK SET VERTICALLY.
 HV0476
 HV0476                          STATION RECOVERY (2014)
 HV0476
 HV0476'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0476'THE BUILDING IS NOW A RESIDENCE AND IS PAINTED BROWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0472 ***********************************************************************
 HU0472  DESIGNATION -  E 6
 HU0472  PID         -  HU0472
 HU0472  STATE/COUNTY-  MD/SOMERSET
 HU0472  COUNTRY     -  US
 HU0472  USGS QUAD   -  EDEN (2016)
 HU0472
 HU0472                         *CURRENT SURVEY CONTROL
 HU0472  ______________________________________________________________________
 HU0472* NAD 83(1986) POSITION- 38 16 25.     (N) 075 39 22.     (W)   SCALED
 HU0472* NAVD 88 ORTHO HEIGHT -     7.395 (meters)       24.26  (feet) ADJUSTED
 HU0472  ______________________________________________________________________
 HU0472  GEOID HEIGHT    -        -35.932 (meters)                     GEOID18
 HU0472  DYNAMIC HEIGHT  -          7.391 (meters)       24.25  (feet) COMP
 HU0472  MODELED GRAVITY -    979,995.4   (mgal)                       NAVD 88
 HU0472
 HU0472  VERT ORDER      -  FIRST     CLASS II
 HU0472
 HU0472.The horizontal coordinates were scaled from a map and have
 HU0472.an estimated accuracy of +/- 6 seconds.
 HU0472
 HU0472.The orthometric height was determined by differential leveling and
 HU0472.adjusted by the NATIONAL GEODETIC SURVEY
 HU0472.in June 1991.
 HU0472
 HU0472.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0472.GEOID18 height accuracy estimate available here.
 HU0472
 HU0472.Click photographs - Photos may exist for this station.
 HU0472
 HU0472.The dynamic height is computed by dividing the NAVD 88
 HU0472.geopotential number by the normal gravity value computed on the
 HU0472.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0472.degrees latitude (g = 980.6199 gals.).
 HU0472
 HU0472.The modeled gravity was interpolated from observed gravity values.
 HU0472
 HU0472;                    North         East    Units  Estimated Accuracy
 HU0472;SPC MD       -    68,240.      517,590.      MT  (+/- 180 meters Scaled)
 HU0472
 HU0472_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH426363(NAD 83)
 HU0472
 HU0472                          SUPERSEDED SURVEY CONTROL
 HU0472
 HU0472  NGVD 29 (11/26/84)    7.648  (m)           25.09   (f) ADJUSTED    1 2
 HU0472
 HU0472.Superseded values are not recommended for survey control.
 HU0472
 HU0472.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0472.See file dsdata.pdf to determine how the superseded data were derived.
 HU0472
 HU0472_MARKER: DB = BENCH MARK DISK
 HU0472_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0472_STAMPING: E 6 1935
 HU0472_MARK LOGO: CGS
 HU0472_PROJECTION: PROJECTING 3 CENTIMETERS
 HU0472_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0472+STABILITY: SURFACE MOTION
 HU0472
 HU0472  HISTORY     - Date     Condition        Report By
 HU0472  HISTORY     - 1935     MONUMENTED       CGS
 HU0472
 HU0472                          STATION DESCRIPTION
 HU0472
 HU0472'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HU0472'0.6 MI S FROM EDEN.
 HU0472'0.6 MILE SOUTH OF EDEN ON P.R.R., 2860 FT SOUTH OF MILE POST 82-13,
 HU0472'42 FT EAST OF CENTERLINE OF U.S. RT 13, 27 FT WEST OF CENTERLINE
 HU0472'OF SOUTH BOUND TRACKS, 1 FT BELOW TOP OF RAIL, A CONCRETE POST
 HU0472'WITH 1 IN PROJ.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0649 ***********************************************************************
 HU0649  DESIGNATION -  E 60
 HU0649  PID         -  HU0649
 HU0649  STATE/COUNTY-  MD/DORCHESTER
 HU0649  COUNTRY     -  US
 HU0649  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU0649
 HU0649                         *CURRENT SURVEY CONTROL
 HU0649  ______________________________________________________________________
 HU0649* NAD 83(1986) POSITION- 38 25 35.     (N) 075 51 48.     (W)   SCALED
 HU0649* NAVD 88 ORTHO HEIGHT -     1.749 (meters)        5.74  (feet) ADJUSTED
 HU0649  ______________________________________________________________________
 HU0649  GEOID HEIGHT    -        -35.516 (meters)                     GEOID18
 HU0649  DYNAMIC HEIGHT  -          1.748 (meters)        5.73  (feet) COMP
 HU0649  MODELED GRAVITY -    980,011.3   (mgal)                       NAVD 88
 HU0649
 HU0649  VERT ORDER      -  SECOND    CLASS 0
 HU0649
 HU0649.The horizontal coordinates were scaled from a map and have
 HU0649.an estimated accuracy of +/- 6 seconds.
 HU0649
 HU0649.The orthometric height was determined by differential leveling and
 HU0649.adjusted by the NATIONAL GEODETIC SURVEY
 HU0649.in June 1991.
 HU0649
 HU0649.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0649.GEOID18 height accuracy estimate available here.
 HU0649
 HU0649.Click photographs - Photos may exist for this station.
 HU0649
 HU0649.The dynamic height is computed by dividing the NAVD 88
 HU0649.geopotential number by the normal gravity value computed on the
 HU0649.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0649.degrees latitude (g = 980.6199 gals.).
 HU0649
 HU0649.The modeled gravity was interpolated from observed gravity values.
 HU0649
 HU0649;                    North         East    Units  Estimated Accuracy
 HU0649;SPC MD       -    84,950.      499,250.      MT  (+/- 180 meters Scaled)
 HU0649
 HU0649_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH246534(NAD 83)
 HU0649
 HU0649                          SUPERSEDED SURVEY CONTROL
 HU0649
 HU0649  NGVD 29 (11/26/84)    1.988  (m)            6.52   (f) ADJUSTED    2 0
 HU0649
 HU0649.Superseded values are not recommended for survey control.
 HU0649
 HU0649.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0649.See file dsdata.pdf to determine how the superseded data were derived.
 HU0649
 HU0649_MARKER: DB = BENCH MARK DISK
 HU0649_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0649_STAMPING: E 60 1942
 HU0649_MARK LOGO: CGS
 HU0649_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0649+STABILITY: SURFACE MOTION
 HU0649
 HU0649  HISTORY     - Date     Condition        Report By
 HU0649  HISTORY     - 1942     MONUMENTED       CGS
 HU0649  HISTORY     - 1964     MARK NOT FOUND   CGS
 HU0649  HISTORY     - 1981     MARK NOT FOUND   USGS
 HU0649
 HU0649                          STATION DESCRIPTION
 HU0649
 HU0649'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0649'5 MI S FROM VIENNA.
 HU0649'THIS MARK IS ALONG A TAR AND GRAVEL ROAD ABOUT 5 MILES SOUTH OF
 HU0649'THE HIGH SCHOOL AT VIENNA, DORCHESTER COUNTY, AT A DIM DIRT ROAD
 HU0649'LEADING WEST ALONG THE SOUTH EDGE OF A WOODED AREA, 0.1 MILE
 HU0649'NORTH OF A SMALL GRAY HOUSE, 20.4 FEET WEST OF THE CENTER LINE
 HU0649'OF THE ROAD, AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE
 HU0649'POST PROJECTING ABOUT 4 INCHES ABOVE THE GROUND.
 HU0649
 HU0649                          STATION RECOVERY (1964)
 HU0649
 HU0649'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HU0649'MARK NOT FOUND.
 HU0649
 HU0649                          STATION RECOVERY (1981)
 HU0649
 HU0649'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1981
 HU0649'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0022 ***********************************************************************
 HV0022  DESIGNATION -  E 62
 HV0022  PID         -  HV0022
 HV0022  STATE/COUNTY-  MD/TALBOT
 HV0022  COUNTRY     -  US
 HV0022  USGS QUAD   -  TRAPPE (2016)
 HV0022
 HV0022                         *CURRENT SURVEY CONTROL
 HV0022  ______________________________________________________________________
 HV0022* NAD 83(1986) POSITION- 38 44 35.     (N) 076 04 16.     (W)   SCALED
 HV0022* NAVD 88 ORTHO HEIGHT -    10.576 (meters)       34.70  (feet) ADJUSTED
 HV0022  ______________________________________________________________________
 HV0022  GEOID HEIGHT    -        -34.732 (meters)                     GEOID18
 HV0022  DYNAMIC HEIGHT  -         10.570 (meters)       34.68  (feet) COMP
 HV0022  MODELED GRAVITY -    980,033.1   (mgal)                       NAVD 88
 HV0022
 HV0022  VERT ORDER      -  SECOND    CLASS 0
 HV0022
 HV0022.The horizontal coordinates were scaled from a map and have
 HV0022.an estimated accuracy of +/- 6 seconds.
 HV0022
 HV0022.The orthometric height was determined by differential leveling and
 HV0022.adjusted by the NATIONAL GEODETIC SURVEY
 HV0022.in June 1991.
 HV0022
 HV0022.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0022.GEOID18 height accuracy estimate available here.
 HV0022
 HV0022.Click photographs - Photos may exist for this station.
 HV0022
 HV0022.The dynamic height is computed by dividing the NAVD 88
 HV0022.geopotential number by the normal gravity value computed on the
 HV0022.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0022.degrees latitude (g = 980.6199 gals.).
 HV0022
 HV0022.The modeled gravity was interpolated from observed gravity values.
 HV0022
 HV0022;                    North         East    Units  Estimated Accuracy
 HV0022;SPC MD       -   119,890.      480,750.      MT  (+/- 180 meters Scaled)
 HV0022
 HV0022_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH069888(NAD 83)
 HV0022
 HV0022                          SUPERSEDED SURVEY CONTROL
 HV0022
 HV0022  NGVD 29 (11/26/84)   10.814  (m)           35.48   (f) ADJUSTED    2 0
 HV0022
 HV0022.Superseded values are not recommended for survey control.
 HV0022
 HV0022.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0022.See file dsdata.pdf to determine how the superseded data were derived.
 HV0022
 HV0022_MARKER: DB = BENCH MARK DISK
 HV0022_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0022_STAMPING: E 62 1942
 HV0022_MARK LOGO: CGS
 HV0022_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0022+STABILITY: SURFACE MOTION
 HV0022
 HV0022  HISTORY     - Date     Condition        Report By
 HV0022  HISTORY     - 1942     MONUMENTED       CGS
 HV0022  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0022
 HV0022                          STATION DESCRIPTION
 HV0022
 HV0022'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0022'2.2 MI S FROM EASTON.
 HV0022'ALONG U.S. HIGHWAY 213, 19 FEET SOUTH OF THE SOUTHEAST CORNER
 HV0022'OF UNPAINTED HOUSE, 20 FEET EAST OF CONCRETE PLATFORM OVER
 HV0022'WELL, .1 MILE SOUTH OF R.R. CROSSING, 6 FEET EAST OF PEAR TREE,
 HV0022'AND SET IN THE TOP OF A CONCRETE POST.  A STANDARD DISK.
 HV0022
 HV0022                          STATION RECOVERY (1971)
 HV0022
 HV0022'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0022'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0254 ***********************************************************************
 HV0254  DESIGNATION -  E 63
 HV0254  PID         -  HV0254
 HV0254  STATE/COUNTY-  MD/DORCHESTER
 HV0254  COUNTRY     -  US
 HV0254  USGS QUAD   -  CHURCH CREEK (2016)
 HV0254
 HV0254                         *CURRENT SURVEY CONTROL
 HV0254  ______________________________________________________________________
 HV0254* NAD 83(1986) POSITION- 38 36 04.     (N) 076 12 47.     (W)   SCALED
 HV0254* NAVD 88 ORTHO HEIGHT -     1.000 (meters)        3.28  (feet) ADJUSTED
 HV0254  ______________________________________________________________________
 HV0254  GEOID HEIGHT    -        -34.693 (meters)                     GEOID18
 HV0254  DYNAMIC HEIGHT  -          1.000 (meters)        3.28  (feet) COMP
 HV0254  MODELED GRAVITY -    980,025.2   (mgal)                       NAVD 88
 HV0254
 HV0254  VERT ORDER      -  SECOND    CLASS 0
 HV0254
 HV0254.The horizontal coordinates were scaled from a map and have
 HV0254.an estimated accuracy of +/- 6 seconds.
 HV0254
 HV0254.The orthometric height was determined by differential leveling and
 HV0254.adjusted by the NATIONAL GEODETIC SURVEY
 HV0254.in June 1991.
 HV0254
 HV0254.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0254.GEOID18 height accuracy estimate available here.
 HV0254
 HV0254.Click photographs - Photos may exist for this station.
 HV0254
 HV0254.The dynamic height is computed by dividing the NAVD 88
 HV0254.geopotential number by the normal gravity value computed on the
 HV0254.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0254.degrees latitude (g = 980.6199 gals.).
 HV0254
 HV0254.The modeled gravity was interpolated from observed gravity values.
 HV0254
 HV0254;                    North         East    Units  Estimated Accuracy
 HV0254;SPC MD       -   104,020.      468,550.      MT  (+/- 180 meters Scaled)
 HV0254
 HV0254_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH943732(NAD 83)
 HV0254
 HV0254                          SUPERSEDED SURVEY CONTROL
 HV0254
 HV0254  NGVD 29 (02/24/95)    1.232  (m)            4.04   (f) ADJUSTED    2 0
 HV0254  NGVD 29 (11/26/84)    1.238  (m)            4.06   (f) SUPERSEDED  2 0
 HV0254
 HV0254.Superseded values are not recommended for survey control.
 HV0254
 HV0254.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0254.See file dsdata.pdf to determine how the superseded data were derived.
 HV0254
 HV0254_MARKER: DB = BENCH MARK DISK
 HV0254_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0254_STAMPING: E 63 1942
 HV0254_MARK LOGO: CGS
 HV0254_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0254+STABILITY: SURFACE MOTION
 HV0254
 HV0254  HISTORY     - Date     Condition        Report By
 HV0254  HISTORY     - 1942     MONUMENTED       CGS
 HV0254  HISTORY     - 1943     GOOD             CGS
 HV0254  HISTORY     - 1978     MARK NOT FOUND   USGS
 HV0254
 HV0254                          STATION DESCRIPTION
 HV0254
 HV0254'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0254'8 MI NW FROM CAMBRIDGE.
 HV0254'ALONG STATE HIGHWAY 343, 75 FEET WEST OF THE CENTER OF A FARM DRIVE
 HV0254'TO THE NORTH, 150 FEET WEST OF A FARM HOUSE, 26 FEET NORTH OF THE
 HV0254'CENTER OF THE HIGHWAY, 14 FEET SOUTHEAST OF POWER POLE NO. 173,
 HV0254'4 FEET SOUTHWEST OF A SMALL WALNUT TREE, AND SET IN THE TOP OF
 HV0254'A CONCRETE POST.  A STANDARD DISK.
 HV0254
 HV0254                          STATION RECOVERY (1943)
 HV0254
 HV0254'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 HV0254'RECOVERED IN GOOD CONDITION.
 HV0254
 HV0254                          STATION RECOVERY (1978)
 HV0254
 HV0254'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1978
 HV0254'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1594 ***********************************************************************
 JU1594  DESIGNATION -  E 64
 JU1594  PID         -  JU1594
 JU1594  STATE/COUNTY-  MD/CECIL
 JU1594  COUNTRY     -  US
 JU1594  USGS QUAD   -  NORTH EAST (2016)
 JU1594
 JU1594                         *CURRENT SURVEY CONTROL
 JU1594  ______________________________________________________________________
 JU1594* NAD 83(1986) POSITION- 39 34 18.     (N) 075 53 01.     (W)   SCALED
 JU1594* NAVD 88 ORTHO HEIGHT -    16.518 (meters)       54.19  (feet) ADJUSTED
 JU1594  ______________________________________________________________________
 JU1594  GEOID HEIGHT    -        -33.217 (meters)                     GEOID18
 JU1594  DYNAMIC HEIGHT  -         16.510 (meters)       54.17  (feet) COMP
 JU1594  MODELED GRAVITY -    980,132.5   (mgal)                       NAVD 88
 JU1594
 JU1594  VERT ORDER      -  SECOND    CLASS 0
 JU1594
 JU1594.The horizontal coordinates were scaled from a map and have
 JU1594.an estimated accuracy of +/- 6 seconds.
 JU1594
 JU1594.The orthometric height was determined by differential leveling and
 JU1594.adjusted by the NATIONAL GEODETIC SURVEY
 JU1594.in June 1991.
 JU1594
 JU1594.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1594.GEOID18 height accuracy estimate available here.
 JU1594
 JU1594.Click photographs - Photos may exist for this station.
 JU1594
 JU1594.The dynamic height is computed by dividing the NAVD 88
 JU1594.geopotential number by the normal gravity value computed on the
 JU1594.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1594.degrees latitude (g = 980.6199 gals.).
 JU1594
 JU1594.The modeled gravity was interpolated from observed gravity values.
 JU1594
 JU1594;                    North         East    Units  Estimated Accuracy
 JU1594;SPC MD       -   212,060.      495,930.      MT  (+/- 180 meters Scaled)
 JU1594
 JU1594_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ241805(NAD 83)
 JU1594
 JU1594                          SUPERSEDED SURVEY CONTROL
 JU1594
 JU1594  NGVD 29 (11/26/84)   16.750  (m)           54.95   (f) ADJUSTED    2 0
 JU1594
 JU1594.Superseded values are not recommended for survey control.
 JU1594
 JU1594.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1594.See file dsdata.pdf to determine how the superseded data were derived.
 JU1594
 JU1594_MARKER: DB = BENCH MARK DISK
 JU1594_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1594_STAMPING: E 64 1942
 JU1594_MARK LOGO: CGS
 JU1594_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1594+STABILITY: SURFACE MOTION
 JU1594
 JU1594  HISTORY     - Date     Condition        Report By
 JU1594  HISTORY     - 1942     MONUMENTED       CGS
 JU1594  HISTORY     - 1964     MARK NOT FOUND   CGS
 JU1594
 JU1594                          STATION DESCRIPTION
 JU1594
 JU1594'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1594'4.5 MI SW FROM ELKTON.
 JU1594'4.5 MILES SOUTHWEST ALONG THE ELK NECK ROAD FROM THE COURTHOUSE
 JU1594'AT ELKTON, CECIL COUNTY, 24.3 FEET SOUTHEAST OF THE CENTERLINE OF
 JU1594'THE ROAD, 13.5 FEET SOUTH OF A 40-INCH OAK TREE, 1 FOOT FROM A
 JU1594'FENCE AND NEAR A WHITE WOODEN WITNESS POST.  A STANDARD DISK,
 JU1594'STAMPED E 64 1942 AND SET IN THE TOP OF A CONCRETE POST.
 JU1594'NOTE-- THE ROAD HAS BEEN WIDENED IN THIS AREA AND PROBABLY HAS
 JU1594'DESTROYED THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0932 ***********************************************************************
 HU0932  DESIGNATION -  E 66
 HU0932  PID         -  HU0932
 HU0932  STATE/COUNTY-  MD/DORCHESTER
 HU0932  COUNTRY     -  US
 HU0932  USGS QUAD   -  FEDERALSBURG (2016)
 HU0932
 HU0932                         *CURRENT SURVEY CONTROL
 HU0932  ______________________________________________________________________
 HU0932* NAD 83(1986) POSITION- 38 40 05.5    (N) 075 48 51.8    (W)   HD_HELD2
 HU0932* NAVD 88 ORTHO HEIGHT -     5.839 (meters)       19.16  (feet) ADJUSTED
 HU0932  ______________________________________________________________________
 HU0932  GEOID HEIGHT    -        -35.296 (meters)                     GEOID18
 HU0932  DYNAMIC HEIGHT  -          5.835 (meters)       19.14  (feet) COMP
 HU0932  MODELED GRAVITY -    980,021.2   (mgal)                       NAVD 88
 HU0932
 HU0932  VERT ORDER      -  SECOND    CLASS 0
 HU0932
 HU0932.The horizontal coordinates were established by autonomous hand held GPS
 HU0932.observations and have an estimated accuracy of +/- 10 meters.
 HU0932
 HU0932.The orthometric height was determined by differential leveling and
 HU0932.adjusted by the NATIONAL GEODETIC SURVEY
 HU0932.in June 1991.
 HU0932
 HU0932.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0932.GEOID18 height accuracy estimate available here.
 HU0932
 HU0932.Click photographs - Photos may exist for this station.
 HU0932
 HU0932.The dynamic height is computed by dividing the NAVD 88
 HU0932.geopotential number by the normal gravity value computed on the
 HU0932.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0932.degrees latitude (g = 980.6199 gals.).
 HU0932
 HU0932.The modeled gravity was interpolated from observed gravity values.
 HU0932
 HU0932;                    North         East    Units  Estimated Accuracy
 HU0932;SPC MD       -   111,843.      503,176.      MT  (+/- 10 meters HH2 GPS)
 HU0932
 HU0932_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2915180271(NAD 83)
 HU0932
 HU0932                          SUPERSEDED SURVEY CONTROL
 HU0932
 HU0932  NGVD 29 (11/26/84)    6.081  (m)           19.95   (f) ADJUSTED    2 0
 HU0932
 HU0932.Superseded values are not recommended for survey control.
 HU0932
 HU0932.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0932.See file dsdata.pdf to determine how the superseded data were derived.
 HU0932
 HU0932_MARKER: DB = BENCH MARK DISK
 HU0932_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0932_SP_SET: CULVERT
 HU0932_STAMPING: E 66 1942
 HU0932_MARK LOGO: CGS
 HU0932_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0932
 HU0932  HISTORY     - Date     Condition        Report By
 HU0932  HISTORY     - 1942     MONUMENTED       CGS
 HU0932  HISTORY     - 1965     GOOD             CGS
 HU0932
 HU0932                          STATION DESCRIPTION
 HU0932
 HU0932'DESCRIBED BY COAST AND GEODETIC SURVEY 1965
 HU0932'2.8 MI E FROM FEDERALSBURG.
 HU0932'2.8 MILES WEST ALONG THE RAILROAD FROM THE STATION AT FEDERALSBURG,
 HU0932'CAROLINE COUNTY, 10 RAILS WEST OF A PRIVATE ROAD CROSSING, 32.2
 HU0932'FEET SOUTHEAST OF THE CENTER LINE OF THE TRACK, ABOUT 12 FEET
 HU0932'LOWER THAN THE TRACK, SET IN THE SOUTHWEST END OF A CONCRETE
 HU0932'CULVERT, SET IN A DRILLED HOLE, A BRONZE DISK SET IN A DRILLED
 HU0932'HOLE.  NOTE-- THE PRIVATE ROAD CROSSING IS NOW A BLACK TOPPED ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0889 ***********************************************************************
 HU0889  DESIGNATION -  E 67
 HU0889  PID         -  HU0889
 HU0889  STATE/COUNTY-  MD/CAROLINE
 HU0889  COUNTRY     -  US
 HU0889  USGS QUAD   -  HOBBS (2017)
 HU0889
 HU0889                         *CURRENT SURVEY CONTROL
 HU0889  ______________________________________________________________________
 HU0889* NAD 83(1986) POSITION- 38 51 35.     (N) 075 49 04.     (W)   SCALED
 HU0889* NAVD 88 ORTHO HEIGHT -    10.290 (meters)       33.76  (feet) ADJUSTED
 HU0889  ______________________________________________________________________
 HU0889  GEOID HEIGHT    -        -34.932 (meters)                     GEOID18
 HU0889  DYNAMIC HEIGHT  -         10.284 (meters)       33.74  (feet) COMP
 HU0889  MODELED GRAVITY -    980,037.7   (mgal)                       NAVD 88
 HU0889
 HU0889  VERT ORDER      -  SECOND    CLASS 0
 HU0889
 HU0889.The horizontal coordinates were scaled from a map and have
 HU0889.an estimated accuracy of +/- 6 seconds.
 HU0889
 HU0889.The orthometric height was determined by differential leveling and
 HU0889.adjusted by the NATIONAL GEODETIC SURVEY
 HU0889.in June 1991.
 HU0889
 HU0889.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0889.GEOID18 height accuracy estimate available here.
 HU0889
 HU0889.Click photographs - Photos may exist for this station.
 HU0889
 HU0889.The dynamic height is computed by dividing the NAVD 88
 HU0889.geopotential number by the normal gravity value computed on the
 HU0889.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0889.degrees latitude (g = 980.6199 gals.).
 HU0889
 HU0889.The modeled gravity was interpolated from observed gravity values.
 HU0889
 HU0889;                    North         East    Units  Estimated Accuracy
 HU0889;SPC MD       -   133,100.      502,610.      MT  (+/- 180 meters Scaled)
 HU0889
 HU0889_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ290015(NAD 83)
 HU0889
 HU0889                          SUPERSEDED SURVEY CONTROL
 HU0889
 HU0889  NGVD 29 (11/26/84)   10.529  (m)           34.54   (f) ADJUSTED    2 0
 HU0889
 HU0889.Superseded values are not recommended for survey control.
 HU0889
 HU0889.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0889.See file dsdata.pdf to determine how the superseded data were derived.
 HU0889
 HU0889_MARKER: DB = BENCH MARK DISK
 HU0889_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0889_STAMPING: E 67 1942
 HU0889_MARK LOGO: CGS
 HU0889_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0889+STABILITY: SURFACE MOTION
 HU0889
 HU0889  HISTORY     - Date     Condition        Report By
 HU0889  HISTORY     - 1942     MONUMENTED       CGS
 HU0889  HISTORY     - 1974     POOR             MDDT
 HU0889  HISTORY     - 19910103 MARK NOT FOUND   NGS
 HU0889
 HU0889                          STATION DESCRIPTION
 HU0889
 HU0889'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0889'1.7 MI S FROM DENTON.
 HU0889'1.7 MILE SOUTH ALONG HIGHWAY 313 FROM THE WYE JUNCTION OF HIGHWAY
 HU0889'313 AND HIGHWAY 404 AT DENTON, CAROLINE COUNTY, 32.0 FEET SOUTHWEST
 HU0889'OF THE CENTER LINE OF THE HIGHWAY, 9.0 FEET NORTHWEST OF THE
 HU0889'CENTER LINE OF A DIRT ROAD WHICH RUNS SOUTHWEST FROM THE HIGHWAY,
 HU0889'2.0 FEET SOUTHEAST OF THE EAST CORNER OF A WIRE FENCE, 9.0 FEET
 HU0889'SOUTHWEST OF THE NORTHWEST END OF A 18-INCH CORRUGATED IRON PIPE
 HU0889'CULVERT, NEAR A WHITE REFERENCE POST.  NOTE-- THE HIGHWAY HAS BEEN
 HU0889'RELOCATED AND MARK IS NOW ALONG SECTION OF THE OLD HIGHWAY.
 HU0889
 HU0889                          STATION RECOVERY (1974)
 HU0889
 HU0889'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1974
 HU0889'MARK RECOVERED IN POOR CONDITION.
 HU0889
 HU0889                          STATION RECOVERY (1991)
 HU0889
 HU0889'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU0889'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0821 ***********************************************************************
 HU0821  DESIGNATION -  E 68
 HU0821  PID         -  HU0821
 HU0821  STATE/COUNTY-  MD/CAROLINE
 HU0821  COUNTRY     -  US
 HU0821  USGS QUAD   -  RIDGELY (2017)
 HU0821
 HU0821                         *CURRENT SURVEY CONTROL
 HU0821  ______________________________________________________________________
 HU0821* NAD 83(1986) POSITION- 38 56 49.6    (N) 075 53 09.1    (W)   HD_HELD2
 HU0821* NAVD 88 ORTHO HEIGHT -    20.794 (meters)       68.22  (feet) ADJUSTED
 HU0821  ______________________________________________________________________
 HU0821  GEOID HEIGHT    -        -34.563 (meters)                     GEOID18
 HU0821  DYNAMIC HEIGHT  -         20.782 (meters)       68.18  (feet) COMP
 HU0821  MODELED GRAVITY -    980,053.8   (mgal)                       NAVD 88
 HU0821
 HU0821  VERT ORDER      -  SECOND    CLASS I
 HU0821
 HU0821.The horizontal coordinates were established by autonomous hand held GPS
 HU0821.observations and have an estimated accuracy of +/- 10 meters.
 HU0821
 HU0821.The orthometric height was determined by differential leveling and
 HU0821.adjusted by the NATIONAL GEODETIC SURVEY
 HU0821.in December 2004.
 HU0821
 HU0821.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0821.GEOID18 height accuracy estimate available here.
 HU0821
 HU0821.Click photographs - Photos may exist for this station.
 HU0821
 HU0821.The dynamic height is computed by dividing the NAVD 88
 HU0821.geopotential number by the normal gravity value computed on the
 HU0821.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0821.degrees latitude (g = 980.6199 gals.).
 HU0821
 HU0821.The modeled gravity was interpolated from observed gravity values.
 HU0821
 HU0821;                    North         East    Units  Estimated Accuracy
 HU0821;SPC MD       -   142,724.      496,578.      MT  (+/- 10 meters HH2 GPS)
 HU0821
 HU0821_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2323411280(NAD 83)
 HU0821
 HU0821                          SUPERSEDED SURVEY CONTROL
 HU0821
 HU0821  NAVD 88 (06/15/91)   20.830  (m)           68.34   (f) SUPERSEDED  2 0
 HU0821  NGVD 29 (11/26/84)   21.066  (m)           69.11   (f) ADJUSTED    2 0
 HU0821
 HU0821.Superseded values are not recommended for survey control.
 HU0821
 HU0821.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0821.See file dsdata.pdf to determine how the superseded data were derived.
 HU0821
 HU0821_MARKER: DB = BENCH MARK DISK
 HU0821_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0821_SP_SET: STEP
 HU0821_STAMPING: E 68 1942
 HU0821_MARK LOGO: CGS
 HU0821_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0821_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0821_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0821+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2016
 HU0821
 HU0821  HISTORY     - Date     Condition        Report By
 HU0821  HISTORY     - 1942     MONUMENTED       CGS
 HU0821  HISTORY     - 20020927 GOOD             INDIV
 HU0821  HISTORY     - 20021010 GOOD             MDSHA
 HU0821  HISTORY     - 20050319 GOOD             USPSQD
 HU0821  HISTORY     - 20160821 GOOD             USPSQD
 HU0821
 HU0821                          STATION DESCRIPTION
 HU0821
 HU0821'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0821'AT RIDGLEY.
 HU0821'AT RIDGLEY, CAROLINE COUNTY, AT THE PENNSYLVANIA RAILROAD STATION,
 HU0821'IN THE EAST END OF THE STEP AT THE NORTH ENTRANCE, 22 FEET SOUTH
 HU0821'OF THE CENTERLINE OF THE TRACK, AND 3 FEET ABOVE THE TRACK.  A
 HU0821'STANDARD DISK, STAMPED E 68 1942.
 HU0821
 HU0821                          STATION RECOVERY (2002)
 HU0821
 HU0821'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (RRC)
 HU0821'RECOVERED IN GOOD CONDITION.
 HU0821
 HU0821                          STATION RECOVERY (2002)
 HU0821
 HU0821'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0821'RECOVERED AS DESCRIBED.
 HU0821
 HU0821                          STATION RECOVERY (2005)
 HU0821
 HU0821'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HU0821'REFERENCED RAILROAD ABANDONED.  STATION LOCKED AND UNUSED.
 HU0821
 HU0821                          STATION RECOVERY (2016)
 HU0821
 HU0821'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 HU0821'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0355 ***********************************************************************
 JV0355  DESIGNATION -  E 69
 JV0355  PID         -  JV0355
 JV0355  STATE/COUNTY-  MD/KENT
 JV0355  COUNTRY     -  US
 JV0355  USGS QUAD   -  CHESTERTOWN (2017)
 JV0355
 JV0355                         *CURRENT SURVEY CONTROL
 JV0355  ______________________________________________________________________
 JV0355* NAD 83(1986) POSITION- 39 10 07.     (N) 076 05 42.     (W)   SCALED
 JV0355* NAVD 88 ORTHO HEIGHT -     6.153 (meters)       20.19  (feet) ADJUSTED
 JV0355  ______________________________________________________________________
 JV0355  GEOID HEIGHT    -        -33.465 (meters)                     GEOID18
 JV0355  DYNAMIC HEIGHT  -          6.150 (meters)       20.18  (feet) COMP
 JV0355  MODELED GRAVITY -    980,106.5   (mgal)                       NAVD 88
 JV0355
 JV0355  VERT ORDER      -  SECOND    CLASS 0
 JV0355
 JV0355.The horizontal coordinates were scaled from a map and have
 JV0355.an estimated accuracy of +/- 6 seconds.
 JV0355
 JV0355.The orthometric height was determined by differential leveling and
 JV0355.adjusted by the NATIONAL GEODETIC SURVEY
 JV0355.in June 1991.
 JV0355
 JV0355.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0355.GEOID18 height accuracy estimate available here.
 JV0355
 JV0355.Click photographs - Photos may exist for this station.
 JV0355
 JV0355.The dynamic height is computed by dividing the NAVD 88
 JV0355.geopotential number by the normal gravity value computed on the
 JV0355.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0355.degrees latitude (g = 980.6199 gals.).
 JV0355
 JV0355.The modeled gravity was interpolated from observed gravity values.
 JV0355
 JV0355;                    North         East    Units  Estimated Accuracy
 JV0355;SPC MD       -   167,110.      478,210.      MT  (+/- 180 meters Scaled)
 JV0355
 JV0355_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ054360(NAD 83)
 JV0355
 JV0355                          SUPERSEDED SURVEY CONTROL
 JV0355
 JV0355  NGVD 29 (11/26/84)    6.394  (m)           20.98   (f) ADJUSTED    2 0
 JV0355
 JV0355.Superseded values are not recommended for survey control.
 JV0355
 JV0355.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0355.See file dsdata.pdf to determine how the superseded data were derived.
 JV0355
 JV0355_MARKER: DB = BENCH MARK DISK
 JV0355_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0355_STAMPING: E 69 1942
 JV0355_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0355+STABILITY: SURFACE MOTION
 JV0355
 JV0355  HISTORY     - Date     Condition        Report By
 JV0355  HISTORY     - 1942     MONUMENTED       CGS
 JV0355  HISTORY     - 1964     GOOD             CGS
 JV0355  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0355  HISTORY     - 19910412 MARK NOT FOUND   USPSQD
 JV0355  HISTORY     - 20250731 MARK NOT FOUND   PROFLN
 JV0355
 JV0355                          STATION DESCRIPTION
 JV0355
 JV0355'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0355'ABOUT 3.0 MILES SOUTHWEST ALONG STATE HIGHWAY 289 FROM THE
 JV0355'ARMORY AT CHESTERTOWN, 90.0 FEET SOUTHWEST OF THE FARM ROAD
 JV0355'LEADING TO THE FARM HOUSE, 21.5 FEET WEST OF THE CENTER LINE OF
 JV0355'THE HIGHWAY AND 1 FOOT EAST OF THE FENCE.  A STANDARD DISK
 JV0355'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT AND ABOUT
 JV0355'3-INCHES BELOW THE SURFACE OF THE GROUND.
 JV0355
 JV0355                          STATION RECOVERY (1971)
 JV0355
 JV0355'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0355'MARK NOT FOUND.
 JV0355
 JV0355                          STATION RECOVERY (1991)
 JV0355
 JV0355'RECOVERY NOTE BY US POWER SQUADRON 1991 (GSW)
 JV0355'MARK NOT FOUND.
 JV0355
 JV0355                          STATION RECOVERY (2025)
 JV0355
 JV0355'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0355'SEARCHED FOR, NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0281 ***********************************************************************
 HU0281  DESIGNATION -  E 7
 HU0281  PID         -  HU0281
 HU0281  STATE/COUNTY-  MD/WORCESTER
 HU0281  COUNTRY     -  US
 HU0281  USGS QUAD   -  BERLIN (2016)
 HU0281
 HU0281                         *CURRENT SURVEY CONTROL
 HU0281  ______________________________________________________________________
 HU0281* NAD 83(1986) POSITION- 38 19 42.     (N) 075 11 24.     (W)   SCALED
 HU0281* NAVD 88 ORTHO HEIGHT -     5.203 (meters)       17.07  (feet) ADJUSTED
 HU0281  ______________________________________________________________________
 HU0281  GEOID HEIGHT    -        -36.034 (meters)                     GEOID18
 HU0281  DYNAMIC HEIGHT  -          5.200 (meters)       17.06  (feet) COMP
 HU0281  MODELED GRAVITY -    980,006.0   (mgal)                       NAVD 88
 HU0281
 HU0281  VERT ORDER      -  SECOND    CLASS 0
 HU0281
 HU0281.The horizontal coordinates were scaled from a map and have
 HU0281.an estimated accuracy of +/- 6 seconds.
 HU0281
 HU0281.The orthometric height was determined by differential leveling and
 HU0281.adjusted by the NATIONAL GEODETIC SURVEY
 HU0281.in June 1991.
 HU0281
 HU0281.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0281.GEOID18 height accuracy estimate available here.
 HU0281
 HU0281.Click photographs - Photos may exist for this station.
 HU0281
 HU0281.The dynamic height is computed by dividing the NAVD 88
 HU0281.geopotential number by the normal gravity value computed on the
 HU0281.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0281.degrees latitude (g = 980.6199 gals.).
 HU0281
 HU0281.The modeled gravity was interpolated from observed gravity values.
 HU0281
 HU0281;                    North         East    Units  Estimated Accuracy
 HU0281;SPC MD       -    75,020.      558,250.      MT  (+/- 180 meters Scaled)
 HU0281
 HU0281_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH833422(NAD 83)
 HU0281
 HU0281                          SUPERSEDED SURVEY CONTROL
 HU0281
 HU0281  NGVD 29 (11/26/84)    5.446  (m)           17.87   (f) ADJUSTED    2 0
 HU0281
 HU0281.Superseded values are not recommended for survey control.
 HU0281
 HU0281.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0281.See file dsdata.pdf to determine how the superseded data were derived.
 HU0281
 HU0281_MARKER: DB = BENCH MARK DISK
 HU0281_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0281_STAMPING: E 7 1935
 HU0281_MARK LOGO: CGS
 HU0281_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0281+STABILITY: SURFACE MOTION
 HU0281
 HU0281  HISTORY     - Date     Condition        Report By
 HU0281  HISTORY     - 1935     MONUMENTED       CGS
 HU0281  HISTORY     - 1962     GOOD             CGS
 HU0281
 HU0281                          STATION DESCRIPTION
 HU0281
 HU0281'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0281'1.7 MI E FROM BERLIN.
 HU0281'1.7 MILE EAST ALONG THE BALTIMORE AND EASTERN RAILROAD FROM THE
 HU0281'CROSSING OF THE PENNSYLVANIA RAILROAD AT BERLIN.  ABOUT 700 FEET
 HU0281'SOUTH OF A 2 STORIED WHITE HOUSE, 81 FEET SOUTHWEST OF THE
 HU0281'CENTERLINE OF A DIRT ROAD THAT CROSSES THE TRACKS, 54 FEET WEST
 HU0281'OF THE CENTER LINE OF BLACKTOPPED ROAD, 39 FEET SOUTH OF THE SOUTH
 HU0281'RAIL OF TRACKS AND 2 FEET EAST OF A WOODEN WITNESS POST.  SET IN
 HU0281'THE TOP OF A CONCRETE POST PROJECTING 2 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0346 ***********************************************************************
 JV0346  DESIGNATION -  E 70
 JV0346  PID         -  JV0346
 JV0346  STATE/COUNTY-  MD/KENT
 JV0346  COUNTRY     -  US
 JV0346  USGS QUAD   -  LANGFORD CREEK (2016)
 JV0346
 JV0346                         *CURRENT SURVEY CONTROL
 JV0346  ______________________________________________________________________
 JV0346* NAD 83(2011) POSITION- 39 05 28.61219(N) 076 13 39.06245(W)   ADJUSTED
 JV0346* NAD 83(2011) ELLIP HT-   -30.836 (meters)        (09/18/23)   ADJUSTED
 JV0346* NAD 83(2011) EPOCH   -  2010.00
 JV0346* NAVD 88 ORTHO HEIGHT -     2.608 (meters)        8.56  (feet) ADJUSTED
 JV0346  ______________________________________________________________________
 JV0346  GEOID HEIGHT    -        -33.458 (meters)                     GEOID18
 JV0346  NAD 83(2011) X  -  1,180,079.148 (meters)                     COMP
 JV0346  NAD 83(2011) Y  - -4,814,402.040 (meters)                     COMP
 JV0346  NAD 83(2011) Z  -  4,000,167.861 (meters)                     COMP
 JV0346  LAPLACE CORR    -         -1.95  (seconds)                    DEFLEC18
 JV0346  DYNAMIC HEIGHT  -          2.606 (meters)        8.55  (feet) COMP
 JV0346  MODELED GRAVITY -    980,099.4   (mgal)                       NAVD 88
 JV0346
 JV0346  VERT ORDER      -  SECOND    CLASS I
 JV0346
 JV0346  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0346  Standards:
 JV0346         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0346            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0346  -------------------------------------------------------------------
 JV0346  NETWORK    0.46   1.08           0.20   0.17   0.55     -0.06429663
 JV0346  -------------------------------------------------------------------
 JV0346  Click here for local accuracies and other accuracy information.
 JV0346
 JV0346.The horizontal coordinates were established by GPS observations
 JV0346.and adjusted by the MD DEPT OF TRANSP in September 2023.
 JV0346
 JV0346.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0346.been affixed to the stable North American tectonic plate. See 
 JV0346.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0346
 JV0346.The horizontal coordinates are valid at the epoch date displayed above
 JV0346.which is a decimal equivalence of Year/Month/Day.
 JV0346
 JV0346.The orthometric height was determined by differential leveling and
 JV0346.adjusted by the NATIONAL GEODETIC SURVEY
 JV0346.in June 1991.
 JV0346
 JV0346.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0346.GEOID18 height accuracy estimate available here.
 JV0346
 JV0346.Click photographs - Photos may exist for this station.
 JV0346
 JV0346.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0346
 JV0346.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0346
 JV0346.The ellipsoidal height was determined by GPS observations
 JV0346.and is referenced to NAD 83.
 JV0346
 JV0346.The dynamic height is computed by dividing the NAVD 88
 JV0346.geopotential number by the normal gravity value computed on the
 JV0346.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0346.degrees latitude (g = 980.6199 gals.).
 JV0346
 JV0346.The modeled gravity was interpolated from observed gravity values.
 JV0346
 JV0346. The following values were computed from the NAD 83(2011) position.
 JV0346
 JV0346;                    North         East     Units Scale Factor Converg.
 JV0346;SPC MD       -   158,422.196   466,827.650   MT  0.99995690   +0 29 05.4
 JV0346;SPC MD       -   519,756.82  1,531,583.72   sFT  0.99995690   +0 29 05.4
 JV0346;UTM  18      - 4,327,623.347   393,842.147   MT  0.99973876   -0 46 26.7
 JV0346
 JV0346!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0346!SPC MD       -   1.00000484  x   0.99995690  =   0.99996174
 JV0346!UTM  18      -   1.00000484  x   0.99973876  =   0.99974360
 JV0346
 JV0346_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9384227623(NAD 83)
 JV0346
 JV0346                          SUPERSEDED SURVEY CONTROL
 JV0346
 JV0346  NGVD 29 (11/26/84)    2.855  (m)            9.37   (f) ADJUSTED    2 0
 JV0346
 JV0346.Superseded values are not recommended for survey control.
 JV0346
 JV0346.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0346.See file dsdata.pdf to determine how the superseded data were derived.
 JV0346
 JV0346_MARKER: DB = BENCH MARK DISK
 JV0346_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0346_SP_SET: CULVERT HEADWALL
 JV0346_STAMPING: E 70 1942
 JV0346_MARK LOGO: CGS
 JV0346_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0346_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0346+STABILITY: SURFACE MOTION
 JV0346_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0346+SATELLITE: SATELLITE OBSERVATIONS - April 14, 2025
 JV0346
 JV0346  HISTORY     - Date     Condition        Report By
 JV0346  HISTORY     - 1942     MONUMENTED
 JV0346  HISTORY     - 1964     GOOD             CGS
 JV0346  HISTORY     - 1971     GOOD             NGS
 JV0346  HISTORY     - 19901212 GOOD             USPSQD
 JV0346  HISTORY     - 20010308 GOOD             MDSHA
 JV0346  HISTORY     - 20140109 GOOD             ARCSHE
 JV0346  HISTORY     - 20210127 GOOD             MDSHA
 JV0346  HISTORY     - 20250414 GOOD             PROFLN
 JV0346
 JV0346                          STATION DESCRIPTION
 JV0346
 JV0346'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0346'3.3 MI S FROM ROCK HALL.
 JV0346'ABOUT 3.3 MILES SOUTH ALONG STATE HIGHWAY 445 FROM THE METHODIST
 JV0346'CHURCH AT ROCK HALL, AT THE INTERSECTION OF A ROAD LEADING
 JV0346'EAST AND A TWIN CONCRETE CULVERT UNDER THE HIGHWAY.  IN THE TOP
 JV0346'OF THE NORTH END OF THE WEST HEADWALL, A STANDARD DISK SET
 JV0346'VERTICALLY.
 JV0346
 JV0346                          STATION RECOVERY (1971)
 JV0346
 JV0346'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0346'RECOVERED IN GOOD CONDITION.
 JV0346
 JV0346                          STATION RECOVERY (1990)
 JV0346
 JV0346'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0346'RECOVERED IN GOOD CONDITION.
 JV0346
 JV0346                          STATION RECOVERY (2001)
 JV0346
 JV0346'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV0346'RECOVERED AS DESCRIBED.
 JV0346
 JV0346                          STATION RECOVERY (2014)
 JV0346
 JV0346'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0346'RECOVERED IN GOOD CONDITION.
 JV0346
 JV0346                          STATION RECOVERY (2021)
 JV0346
 JV0346'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV0346'RECOVERED IN GOOD CONDITION.  DESCRIPTION HAS BEEN UPDATED. THE MARK
 JV0346'IS LOCATED ABOUT 11.8 MI (19.0 KM) SOUTHWEST OF CHESTERTOWN, 7.7 MI
 JV0346'(12.4 KM) NORTH-NORTHEAST OF CLOVERFIELDS, 6.1 MI (9.8 KM) NORTHEAST
 JV0346'OF LOVE POINT AND 3.3 MI (5.3 KM) SOUTH OF ROCK HALL.
 JV0346'
 JV0346'TO REACH THE MARK FROM THE JUNCTION OF MD 21 AND MD 20 SOUTH TURN
 JV0346'RIGHT AND GO SOUTH-SOUTHWEST ON MD 20 W FOR 4.62 MI (7.43 KM) TO AN
 JV0346'INTERSECTION.  TURN LEFT AND GO SOUTHEAST ON MD 674 W/SHARP ST FOR
 JV0346'0.31 MI (0.50 KM) TO AN INTERSECTION.  CONTINUE STRAIGHT ONTO BOUNDARY
 JV0346'AVENUE FOR 0.41 MI (0.66 KM) TO AN INTERSECTION.  TURN LEFT AND GO
 JV0346'SOUTH-SOUTHWEST ON SLIGHT LEFT ONTO MD 445 S FOR 2.88 MI (4.63 KM) TO
 JV0346'THE MARK ON THE RIGHT.
 JV0346'
 JV0346'THE MARK IS 115.2 FT (35.1 M) NORTH OF THE CENTERLINE OF A GRAVEL
 JV0346'ENTRANCE FOR ELLENDALE FARM DRIVE, 102.8 FT (31.3 M) WEST OF A UTILITY
 JV0346'POLE NUMBERED 29214-13748, 14.4 FT (4.4 M) WEST OF THE CENTERLINE OF
 JV0346'STATE ROUTE MD 445, 10.8 FT (3.3 M) NORTHEAST OF A UTILITY POLE
 JV0346'NUMBERED 19745-29203, 7.1 FT (2.2 M) NORTH OF THE SOUTH END OF THE
 JV0346'HEADWALL AND ABOUT LEVEL WITH THE ROAD.
 JV0346
 JV0346                          STATION RECOVERY (2025)
 JV0346
 JV0346'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0346'THE MARK IS 10 FT (3.0 M) SOUTH 0F EXTENDED C/L OF NAPLEY GREEN ROAD,
 JV0346'1 FT (0.3 M) SOUTH OF THE NORTH END OF A HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1213 ***********************************************************************
 JU1213  DESIGNATION -  E 72
 JU1213  PID         -  JU1213
 JU1213  STATE/COUNTY-  MD/QUEEN ANNES
 JU1213  COUNTRY     -  US
 JU1213  USGS QUAD   -  CHURCH HILL (2017)
 JU1213
 JU1213                         *CURRENT SURVEY CONTROL
 JU1213  ______________________________________________________________________
 JU1213* NAD 83(1986) POSITION- 39 14 30.6    (N) 075 55 21.8    (W)   HD_HELD2
 JU1213* NAVD 88 ORTHO HEIGHT -     5.194 (meters)       17.04  (feet) ADJUSTED
 JU1213  ______________________________________________________________________
 JU1213  GEOID HEIGHT    -        -33.569 (meters)                     GEOID18
 JU1213  DYNAMIC HEIGHT  -          5.191 (meters)       17.03  (feet) COMP
 JU1213  MODELED GRAVITY -    980,109.7   (mgal)                       NAVD 88
 JU1213
 JU1213  VERT ORDER      -  SECOND    CLASS 0
 JU1213
 JU1213.The horizontal coordinates were established by autonomous hand held GPS
 JU1213.observations and have an estimated accuracy of +/- 10 meters.
 JU1213
 JU1213.The orthometric height was determined by differential leveling and
 JU1213.adjusted by the NATIONAL GEODETIC SURVEY
 JU1213.in June 1991.
 JU1213
 JU1213.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1213.GEOID18 height accuracy estimate available here.
 JU1213
 JU1213.Click photographs - Photos may exist for this station.
 JU1213
 JU1213.The dynamic height is computed by dividing the NAVD 88
 JU1213.geopotential number by the normal gravity value computed on the
 JU1213.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1213.degrees latitude (g = 980.6199 gals.).
 JU1213
 JU1213.The modeled gravity was interpolated from observed gravity values.
 JU1213
 JU1213;                    North         East    Units  Estimated Accuracy
 JU1213;SPC MD       -   175,402.      492,997.      MT  (+/- 10 meters HH2 GPS)
 JU1213
 JU1213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2037144019(NAD 83)
 JU1213
 JU1213                          SUPERSEDED SURVEY CONTROL
 JU1213
 JU1213  NGVD 29 (11/26/84)    5.435  (m)           17.83   (f) ADJUSTED    2 0
 JU1213
 JU1213.Superseded values are not recommended for survey control.
 JU1213
 JU1213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1213.See file dsdata.pdf to determine how the superseded data were derived.
 JU1213
 JU1213_MARKER: DB = BENCH MARK DISK
 JU1213_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1213_STAMPING: E 72 1942
 JU1213_MARK LOGO: CGS
 JU1213_PROJECTION: RECESSED 8 CENTIMETERS
 JU1213_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1213+STABILITY: SURFACE MOTION
 JU1213_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1213+SATELLITE: SATELLITE OBSERVATIONS - May 03, 2013
 JU1213
 JU1213  HISTORY     - Date     Condition        Report By
 JU1213  HISTORY     - 1942     MONUMENTED       CGS
 JU1213  HISTORY     - 1964     GOOD             CGS
 JU1213  HISTORY     - 1980     GOOD             LOCSUR
 JU1213  HISTORY     - 20020306 GOOD             USPSQD
 JU1213  HISTORY     - 20060318 GOOD             USPSQD
 JU1213  HISTORY     - 20130503 GOOD             ARCSHE
 JU1213
 JU1213                          STATION DESCRIPTION
 JU1213
 JU1213'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1213'AT CRUMPTON.
 JU1213'AT THE SECOND STREET LEADING WEST SOUTH OF THE BRIDGE OVER
 JU1213'THE CHESTER RIVER AT CRUMPTON, THE STAMPING ON THE MARK WAS
 JU1213'CORRECTED FROM E 71 TO E 72.  37.0 FEET WEST OF CENTER LINE OF
 JU1213'THE HIGHWAY, 15.0 FEET NORTH OF CENTERLINE OF STREET A LEADING
 JU1213'WEST, 14.5 FEET SOUTH OF SOUTHEAST CORNER OF THE 2-STORY HOUSE
 JU1213'AND 2 FEET NORTH OF THE CURB.  A STANDARD DISK SET IN THE TOP OF
 JU1213'A CONCRETE POST ABOUT FLUSH WITH THE GROUND.
 JU1213
 JU1213                          STATION RECOVERY (1980)
 JU1213
 JU1213'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1980
 JU1213'NOTE--MARK IS UNDER 1 1/2-2 INCHES OF GRASS AND SOIL.
 JU1213
 JU1213                          STATION RECOVERY (2002)
 JU1213
 JU1213'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU1213'34.5 FT SW OF POWER POLE 171 1/2.
 JU1213
 JU1213                          STATION RECOVERY (2006)
 JU1213
 JU1213'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JU1213'REFERENCED SECOND STREET IS NOW NAMED SECOND STREET.  MARK IS 3 INCHES
 JU1213'BELOW GROUND LEVEL.
 JU1213
 JU1213                          STATION RECOVERY (2013)
 JU1213
 JU1213'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU1213'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0217 ***********************************************************************
 HV0217  DESIGNATION -  E 73
 HV0217  PID         -  HV0217
 HV0217  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0217  COUNTRY     -  US
 HV0217  USGS QUAD   -  ANNAPOLIS (2016)
 HV0217
 HV0217                         *CURRENT SURVEY CONTROL
 HV0217  ______________________________________________________________________
 HV0217* NAD 83(1986) POSITION- 38 57 12.15   (N) 076 29 39.36   (W)   HD_HELD1
 HV0217* NAVD 88 ORTHO HEIGHT -    11.138 (meters)       36.54  (feet) ADJUSTED
 HV0217  ______________________________________________________________________
 HV0217  GEOID HEIGHT    -        -33.370 (meters)                     GEOID18
 HV0217  DYNAMIC HEIGHT  -         11.131 (meters)       36.52  (feet) COMP
 HV0217  MODELED GRAVITY -    980,072.0   (mgal)                       NAVD 88
 HV0217
 HV0217  VERT ORDER      -  SECOND    CLASS 0
 HV0217
 HV0217.The horizontal coordinates were determined by differentially corrected
 HV0217.hand held GPS observations or other comparable positioning techniques
 HV0217.and have an estimated accuracy of +/- 3 meters.
 HV0217
 HV0217.The orthometric height was determined by differential leveling and
 HV0217.adjusted by the NATIONAL GEODETIC SURVEY
 HV0217.in June 1991.
 HV0217
 HV0217.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0217.GEOID18 height accuracy estimate available here.
 HV0217
 HV0217.Click photographs - Photos may exist for this station.
 HV0217
 HV0217.The dynamic height is computed by dividing the NAVD 88
 HV0217.geopotential number by the normal gravity value computed on the
 HV0217.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0217.degrees latitude (g = 980.6199 gals.).
 HV0217
 HV0217.The modeled gravity was interpolated from observed gravity values.
 HV0217
 HV0217;                    North         East    Units  Estimated Accuracy
 HV0217;SPC MD       -   142,951.8     443,836.2     MT  (+/- 3 meters HH1 GPS) 
 HV0217
 HV0217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7052012664(NAD 83)
 HV0217
 HV0217                          SUPERSEDED SURVEY CONTROL
 HV0217
 HV0217  NGVD 29 (11/26/84)   11.388  (m)           37.36   (f) ADJUSTED    2 0
 HV0217
 HV0217.Superseded values are not recommended for survey control.
 HV0217
 HV0217.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0217.See file dsdata.pdf to determine how the superseded data were derived.
 HV0217
 HV0217_MARKER: DB = BENCH MARK DISK
 HV0217_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0217_SP_SET: FOUNDATION
 HV0217_STAMPING: E 73 1942
 HV0217_MARK LOGO: CGS
 HV0217_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0217_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0217+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2005
 HV0217
 HV0217  HISTORY     - Date     Condition        Report By
 HV0217  HISTORY     - 1942     MONUMENTED       CGS
 HV0217  HISTORY     - 1951     GOOD             CGS
 HV0217  HISTORY     - 20010215 GOOD             USPSQD
 HV0217  HISTORY     - 20050720 GOOD             USPSQD
 HV0217
 HV0217                          STATION DESCRIPTION
 HV0217
 HV0217'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0217'2.3 MI SE FROM ANNAPOLIS.
 HV0217'ALONG THE BAY RIDGE ROAD, ABOUT 2.3 MILES SOUTHEAST OF CHURCH
 HV0217'CIRCLE AT ANNAPOLIS, SET VERTICALLY IN THE SOUTH END OF THE EAST
 HV0217'FACE OF THE CONCRETE FOUNDATION OF THE JOHN WESLEY M.E. CHURCH,
 HV0217'IN THE NORTH ANGLE OF A WYE JUNCTION OF MACADAM ROADS LEADING
 HV0217'NORTHEAST, NORTHWEST AND SOUTHEAST FROM THE JUNCTION, 2 FEET
 HV0217'NORTH OF THE FOURTH STEP LEADING TO THE ENTRANCE OF THE CHURCH,
 HV0217'3.4 FEET HIGHER THAN THE GROUND AND IS A BENCH MARK DISK SET IN
 HV0217'A DRILL HOLE.
 HV0217
 HV0217                          STATION RECOVERY (1951)
 HV0217
 HV0217'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951
 HV0217'RECOVERED IN GOOD CONDITION.
 HV0217
 HV0217                          STATION RECOVERY (2001)
 HV0217
 HV0217'RECOVERY NOTE BY US POWER SQUADRON 2001 (CRA)
 HV0217'RECOVERED IN GOOD CONDITION.
 HV0217
 HV0217                          STATION RECOVERY (2005)
 HV0217
 HV0217'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV0217'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0513 ***********************************************************************
 JV0513  DESIGNATION -  E 74
 JV0513  PID         -  JV0513
 JV0513  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0513  COUNTRY     -  US
 JV0513  USGS QUAD   -  GIBSON ISLAND (2017)
 JV0513
 JV0513                         *CURRENT SURVEY CONTROL
 JV0513  ______________________________________________________________________
 JV0513* NAD 83(1986) POSITION- 39 06 36.6    (N) 076 26 16.4    (W)   HD_HELD2
 JV0513* NAVD 88 ORTHO HEIGHT -     4.834 (meters)       15.86  (feet) ADJUSTED
 JV0513  ______________________________________________________________________
 JV0513  GEOID HEIGHT    -        -33.212 (meters)                     GEOID18
 JV0513  DYNAMIC HEIGHT  -          4.831 (meters)       15.85  (feet) COMP
 JV0513  MODELED GRAVITY -    980,090.0   (mgal)                       NAVD 88
 JV0513
 JV0513  VERT ORDER      -  SECOND    CLASS 0
 JV0513
 JV0513.The horizontal coordinates were established by autonomous hand held GPS
 JV0513.observations and have an estimated accuracy of +/- 10 meters.
 JV0513
 JV0513.The orthometric height was determined by differential leveling and
 JV0513.adjusted by the NATIONAL GEODETIC SURVEY
 JV0513.in June 1991.
 JV0513
 JV0513.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0513.GEOID18 height accuracy estimate available here.
 JV0513
 JV0513.Click photographs - Photos may exist for this station.
 JV0513
 JV0513.The dynamic height is computed by dividing the NAVD 88
 JV0513.geopotential number by the normal gravity value computed on the
 JV0513.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0513.degrees latitude (g = 980.6199 gals.).
 JV0513
 JV0513.The modeled gravity was interpolated from observed gravity values.
 JV0513
 JV0513;                    North         East    Units  Estimated Accuracy
 JV0513;SPC MD       -   160,386.      448,616.      MT  (+/- 10 meters HH2 GPS)
 JV0513
 JV0513_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7568129986(NAD 83)
 JV0513
 JV0513                          SUPERSEDED SURVEY CONTROL
 JV0513
 JV0513  NGVD 29 (11/26/84)    5.080  (m)           16.67   (f) ADJUSTED    2 0
 JV0513
 JV0513.Superseded values are not recommended for survey control.
 JV0513
 JV0513.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0513.See file dsdata.pdf to determine how the superseded data were derived.
 JV0513
 JV0513_MARKER: DB = BENCH MARK DISK
 JV0513_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0513_STAMPING: E 74 1942
 JV0513_MARK LOGO: CGS
 JV0513_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0513+STABILITY: SURFACE MOTION
 JV0513_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0513+SATELLITE: SATELLITE OBSERVATIONS - October 14, 2017
 JV0513
 JV0513  HISTORY     - Date     Condition        Report By
 JV0513  HISTORY     - 1942     MONUMENTED       CGS
 JV0513  HISTORY     - 20050709 GOOD             GEOCAC
 JV0513  HISTORY     - 20171014 GOOD             GPI
 JV0513
 JV0513                          STATION DESCRIPTION
 JV0513
 JV0513'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0513'5.6 MI SE FROM JACOBSVILLE.
 JV0513'ABOUT 5 MILES SOUTHEAST ALONG HIGHWAY 177 FROM THE SCHOOL AT
 JV0513'JACOBSVILLE AND 0.6 MILES ALONG A MACADAM ROAD LEADING EAST TO
 JV0513'PINE HURST, 200 FEET NORTH OF A SHARP TURN FROM EAST TO NORTH,
 JV0513'AT THE SOUTHWEST CORNER OF A CULTIVATED FIELD, 26 FEET EAST OF THE
 JV0513'CENTER LINE OF THE ROAD, IN LINE WITH A ROW OF TELEPHONE POLES
 JV0513'LEADING EAST ACROSS THE SOUTH EDGE OF THE FIELD, 3 FEET WEST OF
 JV0513'A NORTH-SOUTH FENCE LINE, AND IS A BENCH MARK DISK SET IN TOP OF
 JV0513'A CONCRETE POST PROJECTING ABOUT 3 INCHES ABOVE THE GROUND AND
 JV0513'LEVEL WITH THE ROAD.  STAMPED E 1942.
 JV0513
 JV0513                          STATION RECOVERY (2005)
 JV0513
 JV0513'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 JV0513'LOCATED AS DESCRIBED AND APPROXIMATELY 15 INCHES WEST OF AN ORANGE
 JV0513'CARSONITE WITNESS POST. MARK IS ACROSS THE ROAD AND ABOUT 100 FEET
 JV0513'SOUTHEAST OF POLE 02 300891 20.
 JV0513
 JV0513                          STATION RECOVERY (2017)
 JV0513
 JV0513'RECOVERY NOTE BY GREENMAN PEDERSEN INCORPORATED 2017 (LJB)
 JV0513'THE MARK IS 25 FEET EAST OF THE CENTERLINE OF PINEHURST ROAD, 61.3
 JV0513'FEET SOUTH-SOUTHEAST OF POWER POLE BGE-300891, 1.3 FEET WEST OF A
 JV0513'CARSONITE WITNESS POST, AND 2.4 FEET WEST-SOUTHWEST OF A 9-INCH PINE
 JV0513'TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0127 ***********************************************************************
 HV0127  DESIGNATION -  E 75
 HV0127  PID         -  HV0127
 HV0127  STATE/COUNTY-  MD/QUEEN ANNES
 HV0127  COUNTRY     -  US
 HV0127  USGS QUAD   -  WYE MILLS (2016)
 HV0127
 HV0127                         *CURRENT SURVEY CONTROL
 HV0127  ______________________________________________________________________
 HV0127* NAD 83(1986) POSITION- 38 58 09.     (N) 076 07 10.     (W)   SCALED
 HV0127* NAVD 88 ORTHO HEIGHT -    20.491 (meters)       67.23  (feet) ADJUSTED
 HV0127  ______________________________________________________________________
 HV0127  GEOID HEIGHT    -        -34.006 (meters)                     GEOID18
 HV0127  DYNAMIC HEIGHT  -         20.480 (meters)       67.19  (feet) COMP
 HV0127  MODELED GRAVITY -    980,073.4   (mgal)                       NAVD 88
 HV0127
 HV0127  VERT ORDER      -  SECOND    CLASS 0
 HV0127
 HV0127.The horizontal coordinates were scaled from a map and have
 HV0127.an estimated accuracy of +/- 6 seconds.
 HV0127
 HV0127.The orthometric height was determined by differential leveling and
 HV0127.adjusted by the NATIONAL GEODETIC SURVEY
 HV0127.in June 1991.
 HV0127
 HV0127.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0127.GEOID18 height accuracy estimate available here.
 HV0127
 HV0127.Click photographs - Photos may exist for this station.
 HV0127
 HV0127.The dynamic height is computed by dividing the NAVD 88
 HV0127.geopotential number by the normal gravity value computed on the
 HV0127.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0127.degrees latitude (g = 980.6199 gals.).
 HV0127
 HV0127.The modeled gravity was interpolated from observed gravity values.
 HV0127
 HV0127;                    North         East    Units  Estimated Accuracy
 HV0127;SPC MD       -   144,950.      476,310.      MT  (+/- 180 meters Scaled)
 HV0127
 HV0127_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ030139(NAD 83)
 HV0127
 HV0127                          SUPERSEDED SURVEY CONTROL
 HV0127
 HV0127  NGVD 29 (11/26/84)   20.701  (m)           67.92   (f) ADJUSTED    2 0
 HV0127
 HV0127.Superseded values are not recommended for survey control.
 HV0127
 HV0127.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0127.See file dsdata.pdf to determine how the superseded data were derived.
 HV0127
 HV0127_MARKER: DB = BENCH MARK DISK
 HV0127_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0127_STAMPING: E 75 1942
 HV0127_MARK LOGO: CGS
 HV0127_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0127+STABILITY: SURFACE MOTION
 HV0127
 HV0127  HISTORY     - Date     Condition        Report By
 HV0127  HISTORY     - 1942     MONUMENTED       CGS
 HV0127  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0127  HISTORY     - 20010324 MARK NOT FOUND   USPSQD
 HV0127
 HV0127                          STATION DESCRIPTION
 HV0127
 HV0127'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0127'3 MI NW FROM WYE MILLS.
 HV0127'THIS MARK IS ABOUT 3.0 MILES NORTHWEST FROM WYE MILLS POST
 HV0127'OFFICE, AT THE T JUNCTION OF THE HIGHWAY WHICH RUNS TO WYE ISLAND,
 HV0127'39.2 FEET SOUTH OF THE CENTER LINE OF THE JUNCTION, 25.3 FEET
 HV0127'SOUTHWEST OF A HISTORIC SIGN, 37.0 FEET EAST OF THE CENTER LINE
 HV0127'OF THE ROAD THAT LEADS TO WYE ISLAND, 1 FOOT FROM A FENCE,
 HV0127'NEAR A WHITE REFERENCE POST, AND SET IN THE TOP OF A CONCRETE
 HV0127'POST.  A STANDARD DISK,.
 HV0127
 HV0127                          STATION RECOVERY (1971)
 HV0127
 HV0127'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0127'MARK NOT FOUND.
 HV0127
 HV0127                          STATION RECOVERY (2001)
 HV0127
 HV0127'RECOVERY NOTE BY US POWER SQUADRON 2001 (KNP)
 HV0127'EXTENSIVE HIGHWAY REALIGNMENT AND ROAD PAVING HAVE OCCURRED SINCE
 HV0127'STATION SET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0177 ***********************************************************************
 HV0177  DESIGNATION -  E 76
 HV0177  PID         -  HV0177
 HV0177  STATE/COUNTY-  MD/QUEEN ANNES
 HV0177  COUNTRY     -  US
 HV0177  USGS QUAD   -  KENT ISLAND (2016)
 HV0177
 HV0177                         *CURRENT SURVEY CONTROL
 HV0177  ______________________________________________________________________
 HV0177* NAD 83(1986) POSITION- 38 54 20.     (N) 076 21 02.     (W)   SCALED
 HV0177* NAVD 88 ORTHO HEIGHT -     3.646 (meters)       11.96  (feet) ADJUSTED
 HV0177  ______________________________________________________________________
 HV0177  GEOID HEIGHT    -        -33.709 (meters)                     GEOID18
 HV0177  DYNAMIC HEIGHT  -          3.644 (meters)       11.96  (feet) COMP
 HV0177  MODELED GRAVITY -    980,072.6   (mgal)                       NAVD 88
 HV0177
 HV0177  VERT ORDER      -  SECOND    CLASS 0
 HV0177
 HV0177.The horizontal coordinates were scaled from a map and have
 HV0177.an estimated accuracy of +/- 6 seconds.
 HV0177
 HV0177.The orthometric height was determined by differential leveling and
 HV0177.adjusted by the NATIONAL GEODETIC SURVEY
 HV0177.in June 1991.
 HV0177
 HV0177.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0177.GEOID18 height accuracy estimate available here.
 HV0177
 HV0177.Click photographs - Photos may exist for this station.
 HV0177
 HV0177.The dynamic height is computed by dividing the NAVD 88
 HV0177.geopotential number by the normal gravity value computed on the
 HV0177.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0177.degrees latitude (g = 980.6199 gals.).
 HV0177
 HV0177.The modeled gravity was interpolated from observed gravity values.
 HV0177
 HV0177;                    North         East    Units  Estimated Accuracy
 HV0177;SPC MD       -   137,720.      456,330.      MT  (+/- 180 meters Scaled)
 HV0177
 HV0177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ828071(NAD 83)
 HV0177
 HV0177                          SUPERSEDED SURVEY CONTROL
 HV0177
 HV0177  NGVD 29 (11/26/84)    3.883  (m)           12.74   (f) ADJUSTED    2 0
 HV0177
 HV0177.Superseded values are not recommended for survey control.
 HV0177
 HV0177.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0177.See file dsdata.pdf to determine how the superseded data were derived.
 HV0177
 HV0177_MARKER: DB = BENCH MARK DISK
 HV0177_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0177_STAMPING: E 76 1942
 HV0177_MARK LOGO: CGS
 HV0177_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0177+STABILITY: SURFACE MOTION
 HV0177
 HV0177  HISTORY     - Date     Condition        Report By
 HV0177  HISTORY     - 1942     MONUMENTED       CGS
 HV0177  HISTORY     - 19950628 MARK NOT FOUND   USPSQD
 HV0177  HISTORY     - 19990228 MARK NOT FOUND   USPSQD
 HV0177
 HV0177                          STATION DESCRIPTION
 HV0177
 HV0177'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0177'6.3 MI S FROM STEVENSVILLE.
 HV0177'THIS MARK IS ABOUT 6.3 MILES SOUTH OF THE JUNCTION AT
 HV0177'STEVENSVILLE, QUEEN ANNES COUNTY, 3.5 MILES FROM THE T JUNCTION
 HV0177'OF HIGHWAY 404 AND 33, SET IN THE EAST EDGE OF A FIELD, ON THE
 HV0177'WEST SIDE OF THE ROAD, 13.0 FEET NORTH OF A FARM ROAD, 23.0
 HV0177'FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 29.2 FEET NORTH OF A
 HV0177'40-INCH LOCUST TREE, NEAR A WHITE REFERENCE POST.
 HV0177
 HV0177                          STATION RECOVERY (1995)
 HV0177
 HV0177'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0177'MARK NOT FOUND.
 HV0177
 HV0177                          STATION RECOVERY (1999)
 HV0177
 HV0177'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV0177'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0178 ***********************************************************************
 HV0178  DESIGNATION -  E 76 RESET
 HV0178  PID         -  HV0178
 HV0178  STATE/COUNTY-  MD/QUEEN ANNES
 HV0178  COUNTRY     -  US
 HV0178  USGS QUAD   -  KENT ISLAND (2016)
 HV0178
 HV0178                         *CURRENT SURVEY CONTROL
 HV0178  ______________________________________________________________________
 HV0178* NAD 83(1986) POSITION- 38 54 20.     (N) 076 21 02.     (W)   SCALED
 HV0178* NAVD 88 ORTHO HEIGHT -     3.27  (+/-2cm)       10.7   (feet) VERTCON3
 HV0178  ______________________________________________________________________
 HV0178  GEOID HEIGHT    -        -33.709 (meters)                     GEOID18
 HV0178  VERT ORDER      -  THIRD (See Below)
 HV0178
 HV0178.The horizontal coordinates were scaled from a map and have
 HV0178.an estimated accuracy of +/- 6 seconds.
 HV0178
 HV0178.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0178.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0178
 HV0178.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0178.GEOID18 height accuracy estimate available here.
 HV0178
 HV0178.The vertical order pertains to the NGVD 29 superseded value.
 HV0178
 HV0178.Click photographs - Photos may exist for this station.
 HV0178
 HV0178;                    North         East    Units  Estimated Accuracy
 HV0178;SPC MD       -   137,720.      456,330.      MT  (+/- 180 meters Scaled)
 HV0178
 HV0178_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ828071(NAD 83)
 HV0178
 HV0178                          SUPERSEDED SURVEY CONTROL
 HV0178
 HV0178  NGVD 29 (??/??/??)    3.51   (m)           11.5    (f) RESET       3  
 HV0178
 HV0178.Superseded values are not recommended for survey control.
 HV0178
 HV0178.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0178.See file dsdata.pdf to determine how the superseded data were derived.
 HV0178
 HV0178_MARKER: DB = BENCH MARK DISK
 HV0178_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0178_STAMPING: E 76 RESET 1955
 HV0178_MARK LOGO: CGS
 HV0178_PROJECTION: PROJECTING 10 CENTIMETERS
 HV0178_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0178+STABILITY: SURFACE MOTION
 HV0178
 HV0178  HISTORY     - Date     Condition        Report By
 HV0178  HISTORY     - 1956     MONUMENTED       MDBCSM
 HV0178  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 HV0178  HISTORY     - 19990228 MARK NOT FOUND   USPSQD
 HV0178
 HV0178                          STATION DESCRIPTION
 HV0178
 HV0178'DESCRIBED BY MD BUR SURV AND MAPS 1956
 HV0178'5.4 MI S FROM STEVENSVILLE.
 HV0178'5.4 MILES SOUTH ALONG STATE HIGHWAY 33 FROM THE JUNCTION OF
 HV0178'U.S. HIGHWAY 50 AT STEVENSVILLE, QUEEN ANNES COUNTY, 0.3 MILE
 HV0178'NORTH OF MATTAPEX, 75 FEET EAST OF THE CENTERLINE OF THE HIGHWAY,
 HV0178'8 FEET WEST OF A NORTH-AND-SOUTH FENCE, AND OPPOSITE A FIELD
 HV0178'ROAD LEADING WEST.  A STANDARD DISK, STAMPED E 76 RESET 1955 AND
 HV0178'SET IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES ABOVE
 HV0178'GROUND.  NOTE-- THIS BENCH MARK WAS ESTABLISHED AND ITS
 HV0178'ELEVATION DETERMINED BY ENGINEERS OF THE STATE BUREAU OF
 HV0178'CONTROL SURVEYS AND MAPS IN 1956.
 HV0178
 HV0178                          STATION RECOVERY (1983)
 HV0178
 HV0178'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0178'MARK NOT FOUND.
 HV0178
 HV0178                          STATION RECOVERY (1999)
 HV0178
 HV0178'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV0178'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1336 ***********************************************************************
 JU1336  DESIGNATION -  E 77
 JU1336  PID         -  JU1336
 JU1336  STATE/COUNTY-  MD/QUEEN ANNES
 JU1336  COUNTRY     -  US
 JU1336  USGS QUAD   -  PRICE (2017)
 JU1336
 JU1336                         *CURRENT SURVEY CONTROL
 JU1336  ______________________________________________________________________
 JU1336* NAD 83(1986) POSITION- 39 01 28.     (N) 075 55 03.     (W)   SCALED
 JU1336* NAVD 88 ORTHO HEIGHT -    18.041 (meters)       59.19  (feet) ADJUSTED
 JU1336  ______________________________________________________________________
 JU1336  GEOID HEIGHT    -        -34.222 (meters)                     GEOID18
 JU1336  DYNAMIC HEIGHT  -         18.031 (meters)       59.16  (feet) COMP
 JU1336  MODELED GRAVITY -    980,070.3   (mgal)                       NAVD 88
 JU1336
 JU1336  VERT ORDER      -  SECOND    CLASS 0
 JU1336
 JU1336.The horizontal coordinates were scaled from a map and have
 JU1336.an estimated accuracy of +/- 6 seconds.
 JU1336
 JU1336.The orthometric height was determined by differential leveling and
 JU1336.adjusted by the NATIONAL GEODETIC SURVEY
 JU1336.in June 1991.
 JU1336
 JU1336.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1336.GEOID18 height accuracy estimate available here.
 JU1336
 JU1336.Click photographs - Photos may exist for this station.
 JU1336
 JU1336.The dynamic height is computed by dividing the NAVD 88
 JU1336.geopotential number by the normal gravity value computed on the
 JU1336.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1336.degrees latitude (g = 980.6199 gals.).
 JU1336
 JU1336.The modeled gravity was interpolated from observed gravity values.
 JU1336
 JU1336;                    North         East    Units  Estimated Accuracy
 JU1336;SPC MD       -   151,280.      493,730.      MT  (+/- 180 meters Scaled)
 JU1336
 JU1336_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ205198(NAD 83)
 JU1336
 JU1336                          SUPERSEDED SURVEY CONTROL
 JU1336
 JU1336  NGVD 29 (11/26/84)   18.277  (m)           59.96   (f) ADJUSTED    2 0
 JU1336
 JU1336.Superseded values are not recommended for survey control.
 JU1336
 JU1336.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1336.See file dsdata.pdf to determine how the superseded data were derived.
 JU1336
 JU1336_MARKER: DB = BENCH MARK DISK
 JU1336_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1336_STAMPING: E 77 1942
 JU1336_MARK LOGO: CGS
 JU1336_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1336+STABILITY: SURFACE MOTION
 JU1336
 JU1336  HISTORY     - Date     Condition        Report By
 JU1336  HISTORY     - 1942     MONUMENTED       CGS
 JU1336  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JU1336
 JU1336                          STATION DESCRIPTION
 JU1336
 JU1336'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JU1336'0.8 MI W FROM BRIDGETOWN.
 JU1336'IN QUEEN ANNES COUNTY, 0.8 MILE WEST ALONG A MACADAM ROAD FROM
 JU1336'THE BRIDGETOWN METHODIST CHURCH AT BRIDGETOWN, CAROLINE COUNTY,
 JU1336'THENCE 1.1 MILE SOUTHWEST ALONG A DIRT ROAD, 38.9 FEET NORTHWEST
 JU1336'OF THE NORTHWEST CORNER OF A TWO STORY SHINGLE HOUSE, 21.6 FEET
 JU1336'SOUTH OF THE CENTERLINE OF THE DIRT ROAD, 2.6 FEET SOUTHEAST OF
 JU1336'POLE 235, AND 2 FEET NORTHWEST OF A WHITE WOODEN WITNESS POST.
 JU1336'A STANDARD DISK, STAMPED E 77 1942 AND SET IN THE TOP OF A
 JU1336'CONCRETE POST.
 JU1336
 JU1336                          STATION RECOVERY (1990)
 JU1336
 JU1336'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1336'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1277 ***********************************************************************
 JU1277  DESIGNATION -  E 78
 JU1277  PID         -  JU1277
 JU1277  STATE/COUNTY-  MD/CAROLINE
 JU1277  COUNTRY     -  US
 JU1277  USGS QUAD   -  SUDLERSVILLE (2017)
 JU1277
 JU1277                         *CURRENT SURVEY CONTROL
 JU1277  ______________________________________________________________________
 JU1277* NAD 83(1986) POSITION- 39 07 57.     (N) 075 47 20.     (W)   SCALED
 JU1277* NAVD 88 ORTHO HEIGHT -    22.504 (meters)       73.83  (feet) ADJUSTED
 JU1277  ______________________________________________________________________
 JU1277  GEOID HEIGHT    -        -34.048 (meters)                     GEOID18
 JU1277  DYNAMIC HEIGHT  -         22.492 (meters)       73.79  (feet) COMP
 JU1277  MODELED GRAVITY -    980,087.7   (mgal)                       NAVD 88
 JU1277
 JU1277  VERT ORDER      -  SECOND    CLASS 0
 JU1277
 JU1277.The horizontal coordinates were scaled from a map and have
 JU1277.an estimated accuracy of +/- 6 seconds.
 JU1277
 JU1277.The orthometric height was determined by differential leveling and
 JU1277.adjusted by the NATIONAL GEODETIC SURVEY
 JU1277.in June 1991.
 JU1277
 JU1277.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1277.GEOID18 height accuracy estimate available here.
 JU1277
 JU1277.Click photographs - Photos may exist for this station.
 JU1277
 JU1277.The dynamic height is computed by dividing the NAVD 88
 JU1277.geopotential number by the normal gravity value computed on the
 JU1277.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1277.degrees latitude (g = 980.6199 gals.).
 JU1277
 JU1277.The modeled gravity was interpolated from observed gravity values.
 JU1277
 JU1277;                    North         East    Units  Estimated Accuracy
 JU1277;SPC MD       -   163,410.      504,710.      MT  (+/- 180 meters Scaled)
 JU1277
 JU1277_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ318317(NAD 83)
 JU1277
 JU1277                          SUPERSEDED SURVEY CONTROL
 JU1277
 JU1277  NAD 27      -  39 07 56.85100(N)    075 47 21.44600(W) AD(       ) 3
 JU1277  NGVD 29              22.85   (m)           75.0    (f) LEVELING    3  
 JU1277  NGVD 29 (11/26/84)   22.741  (m)           74.61   (f) ADJUSTED    2 0
 JU1277
 JU1277.Superseded values are not recommended for survey control.
 JU1277
 JU1277.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1277.See file dsdata.pdf to determine how the superseded data were derived.
 JU1277
 JU1277_MARKER: DB = BENCH MARK DISK
 JU1277_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1277_STAMPING: E 78 1942
 JU1277_MARK LOGO: CGS
 JU1277_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1277+STABILITY: SURFACE MOTION
 JU1277
 JU1277  HISTORY     - Date     Condition        Report By
 JU1277  HISTORY     - 1942     MONUMENTED       CGS
 JU1277  HISTORY     - 1964     GOOD             CGS
 JU1277  HISTORY     - 19900606 MARK NOT FOUND   USPSQD
 JU1277
 JU1277                          STATION DESCRIPTION
 JU1277
 JU1277'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (CS)
 JU1277'THIS MARK IS ABOUT 1.2 MI. W ALONG U.S. HIGHWAY 302 FROM THE
 JU1277'T-JUNCTION OF U.S. HIGHWAYS 302 AND 454 AT TEMPLEVILLE, CAROLINE
 JU1277'COUNTY, 144.0 FT. S OF THE CENTERLINE OF THE HIGHWAY, 28.0 FT. W
 JU1277'OF THE CENTERLINE OF A FARM ROAD, 92.4 FT. NW OF THE NW CORNER
 JU1277'OF A FARMHOUSE, 2.8 FT. NE OF A 10-IN. WALNUT TREE, 5.0 FT. E OF
 JU1277'POLE NO. 422, AND 35.0 FT. SW OF THE CENTERLINE OF THE W
 JU1277'HEADWALL OF A CULVERT UNDER THE DRIVEWAY.  A STANDARD BRONZE
 JU1277'DISK, SET IN THE TOP OF A CONCRETE POST, AND STAMPED E 78 1942.
 JU1277
 JU1277                          STATION RECOVERY (1964)
 JU1277
 JU1277'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JU1277'1.2 MI W FROM TEMPLEVILLE.
 JU1277'1.2 MILE WEST ALONG STATE HIGHWAY 302 FROM THE T-JUNCTION OF
 JU1277'STATE HIGHWAY 454 AT TEMPLEVILLE, 144 FEET SOUTH OF THE CENTERLINE
 JU1277'OF THE PRESENT HIGHWAY, 92 FEET NORTHWEST OF NORTHWEST CORNER OF
 JU1277'THE FARM HOUSE, 28 FEET WEST OF THE CENTERLINE OF THE DRIVEWAY TO
 JU1277'FARM HOUSE, AND 6 FEET SOUTHEAST OF POWER LINE POLE NO. 404.  A
 JU1277'STANDARD DISK IN THE TOP OF A CONCRETE POST AND FLUSH WITH THE
 JU1277'GROUND.
 JU1277
 JU1277                          STATION RECOVERY (1990)
 JU1277
 JU1277'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1277'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1560 ***********************************************************************
 JV1560  DESIGNATION -  E 79
 JV1560  PID         -  JV1560
 JV1560  STATE/COUNTY-  MD/BALTIMORE
 JV1560  COUNTRY     -  US
 JV1560  USGS QUAD   -  PHOENIX (2016)
 JV1560
 JV1560                         *CURRENT SURVEY CONTROL
 JV1560  ______________________________________________________________________
 JV1560* NAD 83(1986) POSITION- 39 30 15.     (N) 076 37 07.     (W)   SCALED
 JV1560* NAVD 88 ORTHO HEIGHT -    76.257 (meters)      250.19  (feet) ADJUSTED
 JV1560  ______________________________________________________________________
 JV1560  GEOID HEIGHT    -        -32.411 (meters)                     GEOID18
 JV1560  DYNAMIC HEIGHT  -         76.217 (meters)      250.06  (feet) COMP
 JV1560  MODELED GRAVITY -    980,111.7   (mgal)                       NAVD 88
 JV1560
 JV1560  VERT ORDER      -  SECOND    CLASS 0
 JV1560
 JV1560.The horizontal coordinates were scaled from a map and have
 JV1560.an estimated accuracy of +/- 6 seconds.
 JV1560
 JV1560.The orthometric height was determined by differential leveling and
 JV1560.adjusted by the NATIONAL GEODETIC SURVEY
 JV1560.in June 1991.
 JV1560
 JV1560.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1560.GEOID18 height accuracy estimate available here.
 JV1560
 JV1560.Click photographs - Photos may exist for this station.
 JV1560
 JV1560.The dynamic height is computed by dividing the NAVD 88
 JV1560.geopotential number by the normal gravity value computed on the
 JV1560.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1560.degrees latitude (g = 980.6199 gals.).
 JV1560
 JV1560.The modeled gravity was interpolated from observed gravity values.
 JV1560
 JV1560;                    North         East    Units  Estimated Accuracy
 JV1560;SPC MD       -   204,050.      432,800.      MT  (+/- 180 meters Scaled)
 JV1560
 JV1560_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ608739(NAD 83)
 JV1560
 JV1560                          SUPERSEDED SURVEY CONTROL
 JV1560
 JV1560  NGVD 29 (11/26/84)   76.492  (m)          250.96   (f) ADJUSTED    2 0
 JV1560
 JV1560.Superseded values are not recommended for survey control.
 JV1560
 JV1560.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1560.See file dsdata.pdf to determine how the superseded data were derived.
 JV1560
 JV1560_MARKER: DB = BENCH MARK DISK
 JV1560_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1560_SP_SET: CULVERT
 JV1560_STAMPING: E 79 1942
 JV1560_MARK LOGO: CGS
 JV1560_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1560
 JV1560  HISTORY     - Date     Condition        Report By
 JV1560  HISTORY     - 1942     MONUMENTED       CGS
 JV1560  HISTORY     - 1965     GOOD             CGS
 JV1560  HISTORY     - 19950816 GOOD             USPSQD
 JV1560  HISTORY     - 19951018 GOOD             USPSQD
 JV1560  HISTORY     - 20020707 MARK NOT FOUND   USPS
 JV1560
 JV1560                          STATION DESCRIPTION
 JV1560
 JV1560'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1560'1 MI E FROM ASHLAND.
 JV1560'THIS MARK IS ABOUT 1.0 MILE EAST ALONG ROAD NUMBER 145 FROM THE
 JV1560'OVERHEAD BRIDGE AT ASHLAND, BALTIMORE COUNTY, 17.2 FEET NORTHWEST
 JV1560'OF THE CENTER LINE OF THE ROAD, 102.0 FEET NORTHEAST AND ACROSS
 JV1560'THE ROAD FROM A TWIN MAPLE TREE, SET IN THE NORTHEAST END OF THE
 JV1560'NORTHWEST HEADWALL OF A FOUR FOOT CONCRETE BOX CULVERT.  STAMPED
 JV1560'E 79 1942.
 JV1560
 JV1560                          STATION RECOVERY (1965)
 JV1560
 JV1560'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 JV1560'RECOVERED IN GOOD CONDITION.
 JV1560
 JV1560                          STATION RECOVERY (1995)
 JV1560
 JV1560'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1560'RECOVERED IN GOOD CONDITION.
 JV1560
 JV1560                          STATION RECOVERY (1995)
 JV1560
 JV1560'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1560'RECOVERED IN GOOD CONDITION.
 JV1560
 JV1560                          STATION RECOVERY (2002)
 JV1560
 JV1560'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 JV1560'NOT FOUND. NEW CONCRETE HEADWALL
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0543 ***********************************************************************
 HU0543  DESIGNATION -  E 8
 HU0543  PID         -  HU0543
 HU0543  STATE/COUNTY-  MD/WICOMICO
 HU0543  COUNTRY     -  US
 HU0543  USGS QUAD   -  EDEN (2016)
 HU0543
 HU0543                         *CURRENT SURVEY CONTROL
 HU0543  ______________________________________________________________________
 HU0543* NAD 83(1986) POSITION- 38 20 37.     (N) 075 43 10.     (W)   SCALED
 HU0543* NAVD 88 ORTHO HEIGHT -     1.406 (meters)        4.61  (feet) ADJUSTED
 HU0543  ______________________________________________________________________
 HU0543  GEOID HEIGHT    -        -35.771 (meters)                     GEOID18
 HU0543  DYNAMIC HEIGHT  -          1.405 (meters)        4.61  (feet) COMP
 HU0543  MODELED GRAVITY -    980,003.3   (mgal)                       NAVD 88
 HU0543
 HU0543  VERT ORDER      -  FIRST     CLASS I
 HU0543
 HU0543.The horizontal coordinates were scaled from a map and have
 HU0543.an estimated accuracy of +/- 6 seconds.
 HU0543
 HU0543.The orthometric height was determined by differential leveling and
 HU0543.adjusted by the NATIONAL GEODETIC SURVEY
 HU0543.in June 1991.
 HU0543
 HU0543.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0543.GEOID18 height accuracy estimate available here.
 HU0543
 HU0543.Click photographs - Photos may exist for this station.
 HU0543
 HU0543.The dynamic height is computed by dividing the NAVD 88
 HU0543.geopotential number by the normal gravity value computed on the
 HU0543.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0543.degrees latitude (g = 980.6199 gals.).
 HU0543
 HU0543.The modeled gravity was interpolated from observed gravity values.
 HU0543
 HU0543;                    North         East    Units  Estimated Accuracy
 HU0543;SPC MD       -    75,930.      511,940.      MT  (+/- 180 meters Scaled)
 HU0543
 HU0543_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH371441(NAD 83)
 HU0543
 HU0543                          SUPERSEDED SURVEY CONTROL
 HU0543
 HU0543  NGVD 29 (11/26/84)    1.658  (m)            5.44   (f) ADJUSTED    1 1
 HU0543
 HU0543.Superseded values are not recommended for survey control.
 HU0543
 HU0543.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0543.See file dsdata.pdf to determine how the superseded data were derived.
 HU0543
 HU0543_MARKER: DB = BENCH MARK DISK
 HU0543_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0543_STAMPING: E 8 1935
 HU0543_MARK LOGO: CGS
 HU0543_PROJECTION: RECESSED 8 CENTIMETERS
 HU0543_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0543+STABILITY: SURFACE MOTION
 HU0543
 HU0543  HISTORY     - Date     Condition        Report By
 HU0543  HISTORY     - 1935     MONUMENTED       CGS
 HU0543  HISTORY     - 1963     GOOD             CGS
 HU0543
 HU0543                          STATION DESCRIPTION
 HU0543
 HU0543'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0543'7 MI SW FROM SALISBURY.
 HU0543'6.15 MILES WEST ALONG STATE HIGHWAY 349 FROM THE JUNCTION OF
 HU0543'U.S. HIGHWAY 50 AT SALISBURY, THENCE 0.85 MILE SOUTH ALONG A SAND
 HU0543'ROAD, AT A ABANDONED WARF, 146 FEET SOUTHWEST OF SOUTHWEST CORNER
 HU0543'OF LAST HOUSE AT END OF ROAD, 25 FEET NORTHWEST OF NORTHWEST END
 HU0543'OF A BOARD RAILING FOR OLD WARF, 18 FEET WEST OF A 6-INCH CEDAR TREE,
 HU0543'AND SET IN THE TOP OF A CONCRETE POST 3 INCHES BELOW SURFACE OF
 HU0543'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1658 ***********************************************************************
 JV1658  DESIGNATION -  E 81
 JV1658  PID         -  JV1658
 JV1658  STATE/COUNTY-  MD/CARROLL
 JV1658  COUNTRY     -  US
 JV1658  USGS QUAD   -  MANCHESTER (2016)
 JV1658
 JV1658                         *CURRENT SURVEY CONTROL
 JV1658  ______________________________________________________________________
 JV1658* NAD 83(1986) POSITION- 39 41 45.     (N) 076 57 27.     (W)   SCALED
 JV1658* NAVD 88 ORTHO HEIGHT -   248.749 (meters)      816.10  (feet) ADJUSTED
 JV1658  ______________________________________________________________________
 JV1658  GEOID HEIGHT    -        -32.564 (meters)                     GEOID18
 JV1658  DYNAMIC HEIGHT  -        248.620 (meters)      815.68  (feet) COMP
 JV1658  MODELED GRAVITY -    980,100.9   (mgal)                       NAVD 88
 JV1658
 JV1658  VERT ORDER      -  SECOND    CLASS 0
 JV1658
 JV1658.The horizontal coordinates were scaled from a map and have
 JV1658.an estimated accuracy of +/- 6 seconds.
 JV1658
 JV1658.The orthometric height was determined by differential leveling and
 JV1658.adjusted by the NATIONAL GEODETIC SURVEY
 JV1658.in June 1991.
 JV1658
 JV1658.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1658.GEOID18 height accuracy estimate available here.
 JV1658
 JV1658.Click photographs - Photos may exist for this station.
 JV1658
 JV1658.The dynamic height is computed by dividing the NAVD 88
 JV1658.geopotential number by the normal gravity value computed on the
 JV1658.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1658.degrees latitude (g = 980.6199 gals.).
 JV1658
 JV1658.The modeled gravity was interpolated from observed gravity values.
 JV1658
 JV1658;                    North         East    Units  Estimated Accuracy
 JV1658;SPC MD       -   225,260.      403,650.      MT  (+/- 180 meters Scaled)
 JV1658
 JV1658_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ321958(NAD 83)
 JV1658
 JV1658                          SUPERSEDED SURVEY CONTROL
 JV1658
 JV1658  NGVD 29 (11/26/84)  248.949  (m)          816.76   (f) ADJUSTED    2 0
 JV1658
 JV1658.Superseded values are not recommended for survey control.
 JV1658
 JV1658.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1658.See file dsdata.pdf to determine how the superseded data were derived.
 JV1658
 JV1658_MARKER: DB = BENCH MARK DISK
 JV1658_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1658_STAMPING: E 81 1942
 JV1658_MARK LOGO: CGS
 JV1658_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1658+STABILITY: SURFACE MOTION
 JV1658
 JV1658  HISTORY     - Date     Condition        Report By
 JV1658  HISTORY     - 1942     MONUMENTED       CGS
 JV1658  HISTORY     - 1967     GOOD             CGS
 JV1658  HISTORY     - 20031008 MARK NOT FOUND   PADT
 JV1658
 JV1658                          STATION DESCRIPTION
 JV1658
 JV1658'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1658'4.8 MI E FROM UNION MILLS.
 JV1658'4.8 MILES EAST ALONG DEEP RUN ROAD FROM THE POST OFFICE AT UNION
 JV1658'MILLS, CARROLL COUNTY, AT THE DEEP RUN SCHOOL, IN THE SCHOOLYARD,
 JV1658'102 FEET EAST OF THE EAST SIDE OF THE BRICK SCHOOLHOUSE, 27 FEET
 JV1658'NORTH OF THE CENTER LINE OF THE ROAD, 10.3 FEET NORTH OF A FENCE
 JV1658'CORNER, 8.9 FEET NORTHEAST OF AN 8-INCH MAPLE TREE, AND 1 FOOT
 JV1658'WEST OF A NORTH-AND-SOUTH FENCE.  A STANDARD DISK, STAMPED E 81
 JV1658'1942 AND SET IN THE TOP OF A CONCRETE POST.
 JV1658
 JV1658                          STATION RECOVERY (1967)
 JV1658
 JV1658'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JV1658'RECOVERED IN GOOD CONDITION.
 JV1658
 JV1658                          STATION RECOVERY (2003)
 JV1658
 JV1658'RECOVERY NOTE BY PA DEPT OF TRANSP 2003 (LJM)
 JV1658'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1953 ***********************************************************************
 JV1953  DESIGNATION -  E 82
 JV1953  PID         -  JV1953
 JV1953  STATE/COUNTY-  MD/FREDERICK
 JV1953  COUNTRY     -  US
 JV1953  USGS QUAD   -  EMMITSBURG (2016)
 JV1953
 JV1953                         *CURRENT SURVEY CONTROL
 JV1953  ______________________________________________________________________
 JV1953* NAD 83(1986) POSITION- 39 42 49.     (N) 077 20 35.     (W)   SCALED
 JV1953* NAVD 88 ORTHO HEIGHT -   158.077 (meters)      518.62  (feet) ADJUSTED
 JV1953  ______________________________________________________________________
 JV1953  GEOID HEIGHT    -        -33.376 (meters)                     GEOID18
 JV1953  DYNAMIC HEIGHT  -        157.992 (meters)      518.35  (feet) COMP
 JV1953  MODELED GRAVITY -    980,082.4   (mgal)                       NAVD 88
 JV1953
 JV1953  VERT ORDER      -  SECOND    CLASS I
 JV1953
 JV1953.The horizontal coordinates were scaled from a map and have
 JV1953.an estimated accuracy of +/- 6 seconds.
 JV1953
 JV1953.The orthometric height was determined by differential leveling and
 JV1953.adjusted by the NATIONAL GEODETIC SURVEY
 JV1953.in June 1991.
 JV1953
 JV1953.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1953.GEOID18 height accuracy estimate available here.
 JV1953
 JV1953.Click photographs - Photos may exist for this station.
 JV1953
 JV1953.The dynamic height is computed by dividing the NAVD 88
 JV1953.geopotential number by the normal gravity value computed on the
 JV1953.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1953.degrees latitude (g = 980.6199 gals.).
 JV1953
 JV1953.The modeled gravity was interpolated from observed gravity values.
 JV1953
 JV1953;                    North         East    Units  Estimated Accuracy
 JV1953;SPC MD       -   227,290.      370,580.      MT  (+/- 180 meters Scaled)
 JV1953
 JV1953_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ991985(NAD 83)
 JV1953
 JV1953                          SUPERSEDED SURVEY CONTROL
 JV1953
 JV1953  NGVD 29 (11/26/84)  158.269  (m)          519.25   (f) ADJUSTED    2 0
 JV1953
 JV1953.Superseded values are not recommended for survey control.
 JV1953
 JV1953.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1953.See file dsdata.pdf to determine how the superseded data were derived.
 JV1953
 JV1953_MARKER: DB = BENCH MARK DISK
 JV1953_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1953_SP_SET: CULVERT HEADWALL
 JV1953_STAMPING: E 82 1942
 JV1953_MARK LOGO: CGS
 JV1953_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1953_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1953+STABILITY: SURFACE MOTION
 JV1953_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1953+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2001
 JV1953
 JV1953  HISTORY     - Date     Condition        Report By
 JV1953  HISTORY     - 1942     MONUMENTED       CGS
 JV1953  HISTORY     - 1990     GOOD             USPSQD
 JV1953  HISTORY     - 20010606 GOOD             MDSHA
 JV1953  HISTORY     - 20070721 MARK NOT FOUND   GEOCAC
 JV1953
 JV1953                          STATION DESCRIPTION
 JV1953
 JV1953'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1953'1.1 MI NW FROM EMMITSBURG.
 JV1953'1.1 MILES NORTHWEST ALONG STATE HIGHWAY 32 FROM THE POST OFFICE
 JV1953'AT EMMITSBURG, FREDERICK COUNTY, 61.7 FEET WEST OF THE WEST
 JV1953'CORNER OF A TWO-STORY WHITE HOUSE, 18.3 FEET NORTHWEST OF THE
 JV1953'DRIVEWAY LEADING NORTHEAST TO THE HOUSE, AT A CULVERT, IN THE
 JV1953'TOP OF THE NORTHEAST HEAD WALL, AND 19.4 FEET NORTHEAST OF THE
 JV1953'CENTER LINE OF THE HIGHWAY.  A STANDARD DISK, STAMPED E 82 1942.
 JV1953
 JV1953                          STATION RECOVERY (1990)
 JV1953
 JV1953'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1953'RECOVERED IN GOOD CONDITION.
 JV1953
 JV1953                          STATION RECOVERY (2001)
 JV1953
 JV1953'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1953'THE STATION WAS RECOVERED IN FAIR CONDITION.  THE CONCRETE HEADWALL
 JV1953'HAS BEEN BROKEN IN HALF AND HAS ERODED AWAY TO THE BENCH MARK DISK.
 JV1953'THE STATION IS LOCATED 1.1 MILES (1.8 KM) NORTHWEST ALONG STATE
 JV1953'HIGHWAY 140 FROM THE INTERSECTION WITH SETON AVENUE IN EMMITSBURG. IT
 JV1953'IS 19.2 FEET (5.9 M) NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 12.4
 JV1953'FEET (3.8 M) WEST OF POWER POLE NUMBER 326, 42.7 FEET (13.0 M)
 JV1953'NORTHWEST OF THE SOUTHWEST CORNER OF HOUSE NUMBER 9322, AND 3.0 FEET
 JV1953'(0.9 M) NORTHWEST OF THE NORTHEAST END OF A 18 INCH (46 CM) METAL PIPE
 JV1953'RUNNING UNDER THE HIGHWAY.
 JV1953
 JV1953                          STATION RECOVERY (2007)
 JV1953
 JV1953'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV1953'AREA IS AS DESCRIBED IN 2001 BUT TOP OF CULVERT IS COVERED BY 10
 JV1953'INCHES OF TOPSOIL AND MARK IS NOT VISIBLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1704 ***********************************************************************
 JV1704  DESIGNATION -  E 83
 JV1704  PID         -  JV1704
 JV1704  STATE/COUNTY-  MD/CARROLL
 JV1704  COUNTRY     -  US
 JV1704  USGS QUAD   -  HAMPSTEAD (2016)
 JV1704
 JV1704                         *CURRENT SURVEY CONTROL
 JV1704  ______________________________________________________________________
 JV1704* NAD 83(1986) POSITION- 39 36 09.5    (N) 076 49 57.2    (W)   HD_HELD2
 JV1704* NAVD 88 ORTHO HEIGHT -   254.937 (meters)      836.41  (feet) ADJUSTED
 JV1704  ______________________________________________________________________
 JV1704  GEOID HEIGHT    -        -32.154 (meters)                     GEOID18
 JV1704  DYNAMIC HEIGHT  -        254.806 (meters)      835.98  (feet) COMP
 JV1704  MODELED GRAVITY -    980,104.7   (mgal)                       NAVD 88
 JV1704
 JV1704  VERT ORDER      -  SECOND    CLASS II
 JV1704
 JV1704.The horizontal coordinates were established by autonomous hand held GPS
 JV1704.observations and have an estimated accuracy of +/- 10 meters.
 JV1704
 JV1704.The orthometric height was determined by differential leveling and
 JV1704.adjusted by the NATIONAL GEODETIC SURVEY
 JV1704.in June 1991.
 JV1704
 JV1704.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1704.GEOID18 height accuracy estimate available here.
 JV1704
 JV1704.Click photographs - Photos may exist for this station.
 JV1704
 JV1704.The dynamic height is computed by dividing the NAVD 88
 JV1704.geopotential number by the normal gravity value computed on the
 JV1704.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1704.degrees latitude (g = 980.6199 gals.).
 JV1704
 JV1704.The modeled gravity was interpolated from observed gravity values.
 JV1704
 JV1704;                    North         East    Units  Estimated Accuracy
 JV1704;SPC MD       -   214,924.      414,382.      MT  (+/- 10 meters HH2 GPS)
 JV1704
 JV1704_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4266585259(NAD 83)
 JV1704
 JV1704                          SUPERSEDED SURVEY CONTROL
 JV1704
 JV1704  NGVD 29 (11/26/84)  255.150  (m)          837.10   (f) ADJUSTED    2 0
 JV1704
 JV1704.Superseded values are not recommended for survey control.
 JV1704
 JV1704.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1704.See file dsdata.pdf to determine how the superseded data were derived.
 JV1704
 JV1704_MARKER: DB = BENCH MARK DISK
 JV1704_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV1704_SP_SET: ROCK WALL
 JV1704_STAMPING: E 83 1942
 JV1704_MARK LOGO: CGS
 JV1704_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1704+STABILITY: SURFACE MOTION
 JV1704_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1704+SATELLITE: SATELLITE OBSERVATIONS - January 17, 2021
 JV1704
 JV1704  HISTORY     - Date     Condition        Report By
 JV1704  HISTORY     - 1942     MONUMENTED       CGS
 JV1704  HISTORY     - 20080201 GOOD             MDSHA
 JV1704  HISTORY     - 20140531 GOOD             RODCON
 JV1704  HISTORY     - 20200307 GOOD             WTBALL
 JV1704  HISTORY     - 20210117 GOOD             WTBALL
 JV1704
 JV1704                          STATION DESCRIPTION
 JV1704
 JV1704'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1704'1 MI SE FROM HAMPSTEAD.
 JV1704'1.0 MILE SOUTHEAST ALONG THE BUTLER ROAD FROM THE POST OFFICE
 JV1704'AT HAMPSTEAD, CARROLL COUNTY, NEAR A TWO-STORY ROCK HOUSE, 25.4
 JV1704'FEET NORTHEAST OF THE CENTER LINE OF THE ROAD, 23.6 FEET EAST
 JV1704'OF A POWER-TRANSMISSION LINE POLE, IN THE NORTH END OF A ROCK
 JV1704'WALL AROUND THE HOUSE, AND ABOUT 1 FOOT HIGHER THAN THE GROUND.
 JV1704'A STANDARD DISK, STAMPED E 83 1942.
 JV1704
 JV1704                          STATION RECOVERY (2008)
 JV1704
 JV1704'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV1704'RECOVERED IN GOOD CONDITION.
 JV1704'
 JV1704'NOTE-  TO REACH THE MARK FROM THE INTERSECTION OF MARYLAND ROUTE 30
 JV1704'AND MARYLAND ROUTE 482 IN HAMPSTEAD, GO SOUTHEAST ON MARYLAND ROUTE 30
 JV1704'FOR 0.75 MI (1.2 KM) TO ROUTE 88.  TURN LEFT AND GO EAST ON ROUTE 88
 JV1704'FOR 0.95 MI (1.5 KM) TO ROCK WALL AND MARK ON THE LEFT.
 JV1704
 JV1704                          STATION RECOVERY (2014)
 JV1704
 JV1704'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV1704'RECOVERED IN GOOD CONDITION.
 JV1704
 JV1704                          STATION RECOVERY (2020)
 JV1704
 JV1704'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV1704'RECOVERED IN GOOD CONDITION.
 JV1704
 JV1704                          STATION RECOVERY (2021)
 JV1704
 JV1704'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2021 (JMB)
 JV1704'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1212 ***********************************************************************
 HV1212  DESIGNATION -  E 84
 HV1212  PID         -  HV1212
 HV1212  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1212  COUNTRY     -  US
 HV1212  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1212
 HV1212                         *CURRENT SURVEY CONTROL
 HV1212  ______________________________________________________________________
 HV1212* NAD 83(1986) POSITION- 38 53 19.     (N) 076 52 40.     (W)   SCALED
 HV1212* NAVD 88 ORTHO HEIGHT -    69.290 (meters)      227.33  (feet) ADJUSTED
 HV1212  ______________________________________________________________________
 HV1212  GEOID HEIGHT    -        -32.414 (meters)                     GEOID18
 HV1212  DYNAMIC HEIGHT  -         69.252 (meters)      227.20  (feet) COMP
 HV1212  MODELED GRAVITY -    980,079.1   (mgal)                       NAVD 88
 HV1212
 HV1212  VERT ORDER      -  SECOND    CLASS 0
 HV1212
 HV1212.The horizontal coordinates were scaled from a map and have
 HV1212.an estimated accuracy of +/- 6 seconds.
 HV1212
 HV1212.The orthometric height was determined by differential leveling and
 HV1212.adjusted by the NATIONAL GEODETIC SURVEY
 HV1212.in June 1991.
 HV1212
 HV1212.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1212.GEOID18 height accuracy estimate available here.
 HV1212
 HV1212.Click photographs - Photos may exist for this station.
 HV1212
 HV1212.The dynamic height is computed by dividing the NAVD 88
 HV1212.geopotential number by the normal gravity value computed on the
 HV1212.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1212.degrees latitude (g = 980.6199 gals.).
 HV1212
 HV1212.The modeled gravity was interpolated from observed gravity values.
 HV1212
 HV1212;                    North         East    Units  Estimated Accuracy
 HV1212;SPC MD       -   135,650.      410,600.      MT  (+/- 180 meters Scaled)
 HV1212
 HV1212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ371060(NAD 83)
 HV1212
 HV1212                          SUPERSEDED SURVEY CONTROL
 HV1212
 HV1212  NGVD 29 (11/26/84)   69.530  (m)          228.12   (f) ADJUSTED    2 0
 HV1212
 HV1212.Superseded values are not recommended for survey control.
 HV1212
 HV1212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1212.See file dsdata.pdf to determine how the superseded data were derived.
 HV1212
 HV1212_MARKER: DB = BENCH MARK DISK
 HV1212_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1212_STAMPING: E 84 1942
 HV1212_MARK LOGO: CGS
 HV1212_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1212+STABILITY: SURFACE MOTION
 HV1212
 HV1212  HISTORY     - Date     Condition        Report By
 HV1212  HISTORY     - 1942     MONUMENTED       CGS
 HV1212  HISTORY     - 1958     GOOD             CGS
 HV1212  HISTORY     - 19781102 GOOD             NGS
 HV1212
 HV1212                          STATION DESCRIPTION
 HV1212
 HV1212'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1212'1.4 MI E FROM SEAT PLEASANT.
 HV1212'ABOUT 1.4 MILES EAST ALONG CENTRAL AVENUE FROM LYNDON HILL SCHOOL
 HV1212'NEAR SEAT PLEASANT, PRINCE GEORGES COUNTY, NEAR THE TOP OF A HILL,
 HV1212'AT A TAR ROAD LEADING NORTH, ABOUT 250 FEET EAST OF TANNERS
 HV1212'GARAGE, 27 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 31 FEET
 HV1212'WEST OF THE CENTER LINE OF THE SIDE ROAD, 2 FEET SOUTH OF A
 HV1212'HEDGE ROW IN FRONT OF A 2-STORY WHITE HOUSE, AND ABOUT 12 FEET
 HV1212'WEST OF A POLE.  A STANDARD DISK, STAMPED E 84 1942 AND SET IN
 HV1212'THE TOP OF A CONCRETE POST PROJECTING ABOUT 3 INCHES ABOVE GROUND.
 HV1212
 HV1212                          STATION RECOVERY (1978)
 HV1212
 HV1212'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (RGP)
 HV1212'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7953 ***********************************************************************
 HV7953  DESIGNATION -  E 84 RESET
 HV7953  PID         -  HV7953
 HV7953  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7953  COUNTRY     -  US
 HV7953  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7953
 HV7953                         *CURRENT SURVEY CONTROL
 HV7953  ______________________________________________________________________
 HV7953* NAD 83(1986) POSITION- 38 53 19.     (N) 076 52 40.     (W)   SCALED
 HV7953* NAVD 88 ORTHO HEIGHT -    68.07  (+/-2cm)      223.3   (feet) VERTCON3
 HV7953  ______________________________________________________________________
 HV7953  GEOID HEIGHT    -        -32.414 (meters)                     GEOID18
 HV7953  VERT ORDER      -  THIRD (See Below)
 HV7953
 HV7953.The horizontal coordinates were scaled from a map and have
 HV7953.an estimated accuracy of +/- 6 seconds.
 HV7953
 HV7953.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7953.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7953
 HV7953.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7953.GEOID18 height accuracy estimate available here.
 HV7953
 HV7953.The vertical order pertains to the NGVD 29 superseded value.
 HV7953
 HV7953.Click photographs - Photos may exist for this station.
 HV7953
 HV7953;                    North         East    Units  Estimated Accuracy
 HV7953;SPC MD       -   135,650.      410,600.      MT  (+/- 180 meters Scaled)
 HV7953
 HV7953_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ371060(NAD 83)
 HV7953
 HV7953                          SUPERSEDED SURVEY CONTROL
 HV7953
 HV7953  NGVD 29 (??/??/??)   68.31   (m)          224.1    (f) RESET       3  
 HV7953
 HV7953.Superseded values are not recommended for survey control.
 HV7953
 HV7953.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7953.See file dsdata.pdf to determine how the superseded data were derived.
 HV7953
 HV7953_MARKER: DV = VERTICAL CONTROL DISK
 HV7953_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV7953_SP_SET: CURB
 HV7953_STAMPING: E 84 RESET 1978
 HV7953_MARK LOGO: NGS
 HV7953_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7953_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7953+SATELLITE: SATELLITE OBSERVATIONS - October 27, 2010
 HV7953
 HV7953  HISTORY     - Date     Condition        Report By
 HV7953  HISTORY     - 1978     MONUMENTED       NGS
 HV7953  HISTORY     - 19791102 GOOD             NGS
 HV7953  HISTORY     - 20101027 GOOD             MDSHA
 HV7953
 HV7953                          STATION DESCRIPTION
 HV7953
 HV7953'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 HV7953'ABOUT 1.4 MILES (2.3 KM) EAST ALONG CENTRAL AVENUE, FROM LYNDON HILL
 HV7953'SCHOOL, NEAR SEAT PLEASANT, IN SIDEWALK CURB, 1.7 MILES (2.7 KM) WEST
 HV7953'OF JUNCTION 495, 100 YARDS SOUTH OF 214, 17.5 FEET (5.3 M) SOUTH OF
 HV7953'CENTERLINE OF WALKER MILL DRIVE, 15 FEET (4.6 M) WEST OF CENTERLINE OF
 HV7953'SHADY GLEN ROAD, 11.8 FEET (3.6 M) NORTHEAST OF POWER POLE 15296.
 HV7953
 HV7953                          STATION RECOVERY (2010)
 HV7953
 HV7953'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (TPB)
 HV7953'RECOVERED AS DESCRIBED, NOT SUITABLE FOR POTENTIAL GPS OBSERVATIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1154 ***********************************************************************
 HV1154  DESIGNATION -  E 85
 HV1154  PID         -  HV1154
 HV1154  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1154  COUNTRY     -  US
 HV1154  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1154
 HV1154                         *CURRENT SURVEY CONTROL
 HV1154  ______________________________________________________________________
 HV1154* NAD 83(1986) POSITION- 38 51 04.     (N) 076 45 07.     (W)   SCALED
 HV1154* NAVD 88 ORTHO HEIGHT -    18.164 (meters)       59.59  (feet) ADJUSTED
 HV1154  ______________________________________________________________________
 HV1154  GEOID HEIGHT    -        -32.846 (meters)                     GEOID18
 HV1154  DYNAMIC HEIGHT  -         18.154 (meters)       59.56  (feet) COMP
 HV1154  MODELED GRAVITY -    980,074.7   (mgal)                       NAVD 88
 HV1154
 HV1154  VERT ORDER      -  SECOND    CLASS 0
 HV1154
 HV1154.The horizontal coordinates were scaled from a map and have
 HV1154.an estimated accuracy of +/- 6 seconds.
 HV1154
 HV1154.The orthometric height was determined by differential leveling and
 HV1154.adjusted by the NATIONAL GEODETIC SURVEY
 HV1154.in June 1991.
 HV1154
 HV1154.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1154.GEOID18 height accuracy estimate available here.
 HV1154
 HV1154.Click photographs - Photos may exist for this station.
 HV1154
 HV1154.The dynamic height is computed by dividing the NAVD 88
 HV1154.geopotential number by the normal gravity value computed on the
 HV1154.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1154.degrees latitude (g = 980.6199 gals.).
 HV1154
 HV1154.The modeled gravity was interpolated from observed gravity values.
 HV1154
 HV1154;                    North         East    Units  Estimated Accuracy
 HV1154;SPC MD       -   131,510.      421,530.      MT  (+/- 180 meters Scaled)
 HV1154
 HV1154_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ479017(NAD 83)
 HV1154
 HV1154                          SUPERSEDED SURVEY CONTROL
 HV1154
 HV1154  NGVD 29 (11/26/84)   18.435  (m)           60.48   (f) ADJUSTED    2 0
 HV1154
 HV1154.Superseded values are not recommended for survey control.
 HV1154
 HV1154.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1154.See file dsdata.pdf to determine how the superseded data were derived.
 HV1154
 HV1154_MARKER: DB = BENCH MARK DISK
 HV1154_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1154_SP_SET: BRIDGE WALL
 HV1154_STAMPING: E 85 1942
 HV1154_MARK LOGO: CGS
 HV1154_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1154
 HV1154  HISTORY     - Date     Condition        Report By
 HV1154  HISTORY     - 1942     MONUMENTED       CGS
 HV1154  HISTORY     - 1943     GOOD             CGS
 HV1154
 HV1154                          STATION DESCRIPTION
 HV1154
 HV1154'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1154'2.3 MI N FROM UPPER MARLBORO.
 HV1154'ABOUT 2.3 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 HV1154'CROSSING OF STATE HIGHWAY 4 AT UPPER MARLBORO, PRINCE GEORGES
 HV1154'COUNTY, AT A CURVE IN THE TRACK FROM NORTHWEST TO NORTH-NORTHEAST,
 HV1154'AT BRIDGE 11.46, IN THE TOP OF THE SOUTH END OF THE EAST WALL,
 HV1154'ABOUT 40 FEET EAST OF THE TRACK, AND ABOUT 18 FEET LOWER THAN THE
 HV1154'RAIL.  A STANDARD DISK, STAMPED E 85 1942.
 HV1154
 HV1154                          STATION RECOVERY (1943)
 HV1154
 HV1154'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 HV1154'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1078 ***********************************************************************
 HV1078  DESIGNATION -  E 86
 HV1078  PID         -  HV1078
 HV1078  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1078  COUNTRY     -  US
 HV1078  USGS QUAD   -  PISCATAWAY (2016)
 HV1078
 HV1078                         *CURRENT SURVEY CONTROL
 HV1078  ______________________________________________________________________
 HV1078* NAD 83(1986) POSITION- 38 44 56.     (N) 076 55 51.     (W)   SCALED
 HV1078* NAVD 88 ORTHO HEIGHT -    74.988 (meters)      246.02  (feet) ADJUSTED
 HV1078  ______________________________________________________________________
 HV1078  GEOID HEIGHT    -        -32.533 (meters)                     GEOID18
 HV1078  DYNAMIC HEIGHT  -         74.946 (meters)      245.89  (feet) COMP
 HV1078  MODELED GRAVITY -    980,070.4   (mgal)                       NAVD 88
 HV1078
 HV1078  VERT ORDER      -  SECOND    CLASS 0
 HV1078
 HV1078.The horizontal coordinates were scaled from a map and have
 HV1078.an estimated accuracy of +/- 6 seconds.
 HV1078
 HV1078.The orthometric height was determined by differential leveling and
 HV1078.adjusted by the NATIONAL GEODETIC SURVEY
 HV1078.in June 1991.
 HV1078
 HV1078.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1078.GEOID18 height accuracy estimate available here.
 HV1078
 HV1078.Click photographs - Photos may exist for this station.
 HV1078
 HV1078.The dynamic height is computed by dividing the NAVD 88
 HV1078.geopotential number by the normal gravity value computed on the
 HV1078.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1078.degrees latitude (g = 980.6199 gals.).
 HV1078
 HV1078.The modeled gravity was interpolated from observed gravity values.
 HV1078
 HV1078;                    North         East    Units  Estimated Accuracy
 HV1078;SPC MD       -   120,130.      406,010.      MT  (+/- 180 meters Scaled)
 HV1078
 HV1078_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH322906(NAD 83)
 HV1078
 HV1078                          SUPERSEDED SURVEY CONTROL
 HV1078
 HV1078  NGVD 29 (05/01/89)   75.224  (m)          246.80   (f) ADJUSTED    2 0
 HV1078  NGVD 29 (??/??/87)   75.252  (m)          246.89   (f) SUPERSEDED  2 0
 HV1078
 HV1078.Superseded values are not recommended for survey control.
 HV1078
 HV1078.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1078.See file dsdata.pdf to determine how the superseded data were derived.
 HV1078
 HV1078_MARKER: DB = BENCH MARK DISK
 HV1078_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1078_STAMPING: E 86 1942
 HV1078_MARK LOGO: CGS
 HV1078_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1078+STABILITY: SURFACE MOTION
 HV1078
 HV1078  HISTORY     - Date     Condition        Report By
 HV1078  HISTORY     - 1942     MONUMENTED       CGS
 HV1078
 HV1078                          STATION DESCRIPTION
 HV1078
 HV1078'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1078'2.3 MI SW FROM CLINTON.
 HV1078'2.3 MILES SOUTHWEST ALONG THE PISCATAWAY ROAD FROM THE MAIN
 HV1078'INTERSECTION AT CLINTON, AT THE HYDE FIELD NAVAL TRAINING
 HV1078'STATION, 159.5 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE
 HV1078'CONCRETE HANGAR, 45 FEET SOUTHWEST OF THE CENTERLINE OF THE
 HV1078'SECOND DRIVEWAY INTO THE FIELD SOUTH OF THE MAIN BUILDINGS,
 HV1078'39.6 FEET NORTHWEST OF THE CENTERLINE OF THE ROAD, IN LINE WITH
 HV1078'A ROW OF WOODEN GUARD POSTS ALONG THE SOUTHEAST SIDE OF THE
 HV1078'FIELD, AND IN LINE WITH THE CENTERLINE OF THE NORTHEAST-AND-SOUTHWEST
 HV1078'ASPHALT RUNWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2551 ***********************************************************************
 JV2551  DESIGNATION -  E 87
 JV2551  PID         -  JV2551
 JV2551  STATE/COUNTY-  MD/HOWARD
 JV2551  COUNTRY     -  US
 JV2551  USGS QUAD   -  DAMASCUS (2016)
 JV2551
 JV2551                         *CURRENT SURVEY CONTROL
 JV2551  ______________________________________________________________________
 JV2551* NAD 83(2011) POSITION- 39 20 02.71879(N) 077 09 20.33993(W)   ADJUSTED
 JV2551* NAD 83(2011) ELLIP HT-   215.852 (meters)        (06/27/12)   ADJUSTED
 JV2551* NAD 83(2011) EPOCH   -  2010.00
 JV2551* NAVD 88 ORTHO HEIGHT -   247.704 (meters)      812.68  (feet) ADJUSTED
 JV2551  ______________________________________________________________________
 JV2551  GEOID HEIGHT    -        -31.869 (meters)                     GEOID18
 JV2551  NAD 83(2011) X  -  1,098,193.357 (meters)                     COMP
 JV2551  NAD 83(2011) Y  - -4,816,456.333 (meters)                     COMP
 JV2551  NAD 83(2011) Z  -  4,021,210.019 (meters)                     COMP
 JV2551  LAPLACE CORR    -          1.93  (seconds)                    DEFLEC18
 JV2551  DYNAMIC HEIGHT  -        247.574 (meters)      812.25  (feet) COMP
 JV2551  MODELED GRAVITY -    980,094.1   (mgal)                       NAVD 88
 JV2551
 JV2551  VERT ORDER      -  SECOND    CLASS I
 JV2551
 JV2551  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV2551  Standards:
 JV2551         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV2551            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV2551  -------------------------------------------------------------------
 JV2551  NETWORK    0.40   0.49           0.18   0.14   0.25     -0.07440219
 JV2551  -------------------------------------------------------------------
 JV2551  Click here for local accuracies and other accuracy information.
 JV2551
 JV2551.The horizontal coordinates were established by GPS observations
 JV2551.and adjusted by the National Geodetic Survey in June 2012.
 JV2551
 JV2551.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV2551.been affixed to the stable North American tectonic plate. See 
 JV2551.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV2551
 JV2551.The horizontal coordinates are valid at the epoch date displayed above
 JV2551.which is a decimal equivalence of Year/Month/Day.
 JV2551
 JV2551.The orthometric height was determined by differential leveling and
 JV2551.adjusted by the NATIONAL GEODETIC SURVEY
 JV2551.in June 1991.
 JV2551
 JV2551.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2551.GEOID18 height accuracy estimate available here.
 JV2551
 JV2551.Click photographs - Photos may exist for this station.
 JV2551
 JV2551.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV2551
 JV2551.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2551
 JV2551.The ellipsoidal height was determined by GPS observations
 JV2551.and is referenced to NAD 83.
 JV2551
 JV2551.The dynamic height is computed by dividing the NAVD 88
 JV2551.geopotential number by the normal gravity value computed on the
 JV2551.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2551.degrees latitude (g = 980.6199 gals.).
 JV2551
 JV2551.The modeled gravity was interpolated from observed gravity values.
 JV2551
 JV2551. The following values were computed from the NAD 83(2011) position.
 JV2551
 JV2551;                    North         East     Units Scale Factor Converg.
 JV2551;SPC MD       -   185,106.386   386,580.491   MT  0.99998178   -0 05 51.7
 JV2551;SPC MD       -   607,303.20  1,268,306.16   sFT  0.99998178   -0 05 51.7
 JV2551;UTM  18      - 4,356,067.663   314,210.766   MT  1.00002502   -1 22 00.2
 JV2551
 JV2551!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2551!SPC MD       -   0.99996614  x   0.99998178  =   0.99994792
 JV2551!UTM  18      -   0.99996614  x   1.00002502  =   0.99999116
 JV2551
 JV2551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1421056067(NAD 83)
 JV2551
 JV2551                          SUPERSEDED SURVEY CONTROL
 JV2551
 JV2551  NAD 83(2007)-  39 20 02.71892(N)    077 09 20.34048(W) AD(2002.00) 0
 JV2551  ELLIP H (02/10/07)  215.883  (m)                       GP(2002.00)    
 JV2551  ELLIP H (08/30/02)  215.881  (m)                       GP(       ) 4 2
 JV2551  NAD 83(1991)-  39 20 02.71884(N)    077 09 20.34061(W) AD(       ) 1
 JV2551  ELLIP H (11/16/00)  215.763  (m)                       GP(       ) 4 1
 JV2551  NAVD 88             247.70   (m)          812.7    (f) LEVELING    3  
 JV2551  NGVD 29 (11/26/84)  247.907  (m)          813.34   (f) ADJUSTED    2 0
 JV2551
 JV2551.Superseded values are not recommended for survey control.
 JV2551
 JV2551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2551.See file dsdata.pdf to determine how the superseded data were derived.
 JV2551
 JV2551_MARKER: DB = BENCH MARK DISK
 JV2551_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2551_STAMPING: E 87 1942
 JV2551_MARK LOGO: CGS
 JV2551_PROJECTION: PROJECTING 15 CENTIMETERS
 JV2551_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2551+STABILITY: SURFACE MOTION
 JV2551_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2551+SATELLITE: SATELLITE OBSERVATIONS - April 09, 2018
 JV2551
 JV2551  HISTORY     - Date     Condition        Report By
 JV2551  HISTORY     - 1942     MONUMENTED       CGS
 JV2551  HISTORY     - 1985     GOOD             LOCSUR
 JV2551  HISTORY     - 20000915 GOOD             MD-027
 JV2551  HISTORY     - 20070530 GOOD             MDSHA
 JV2551  HISTORY     - 20070627 GOOD             MDSHA
 JV2551  HISTORY     - 20090226 GOOD             MDSHA
 JV2551  HISTORY     - 20170609 GOOD             NGS
 JV2551  HISTORY     - 20170810 GOOD             NGS
 JV2551  HISTORY     - 20180409 GOOD             NGS
 JV2551
 JV2551                          STATION DESCRIPTION
 JV2551
 JV2551'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2551'AT LONG CORNER.
 JV2551'AT LONG CORNER, HOWARD COUNTY, AT THE PUBLIC SCHOOL, IN THE
 JV2551'SOUTHEAST CORNER OF THE SCHOOLYARD, 63.6 FEET SOUTH OF THE SOUTH
 JV2551'CORNER OF THE STONE FOUNDATION OF THE BUILDING, 73 FEET
 JV2551'EAST-NORTHEAST OF THE EAST CORNER OF A SHEET-METAL IMPLEMENT
 JV2551'SHED, 56 FEET NORTH-NORTHEAST OF THE NORTH CORNER OF A WHITE
 JV2551'WOODEN IMPLEMENT SHED, AND 8.5 FEET NORTHEAST OF A 22-INCH OAK
 JV2551'TREE.  A STANDARD DISK, STAMPED E 87 1942 AND SET IN THE TOP OF
 JV2551'A CONCRETE POST.
 JV2551
 JV2551                          STATION RECOVERY (1985)
 JV2551
 JV2551'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1985
 JV2551'RECOVERED IN GOOD CONDITION.
 JV2551
 JV2551                          STATION RECOVERY (2000)
 JV2551
 JV2551'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV2551'REPORT 2000 BY  HOWARD COUNTY  FOUND IN GOOD CONDITION,
 JV2551'ALTHOUGH THE SCHOOL MENTIONED IN  PREVIOUS DESCRIPTION IS NOT A
 JV2551'SCHOOL ANYMORE,  STRUCTURES AND  TIES STILL EXIST AND ARE VALID
 JV2551'TODAY
 JV2551'
 JV2551
 JV2551                          STATION RECOVERY (2007)
 JV2551
 JV2551'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV2551'THE STATION IS LOCATED ABOUT 3.0 MI (4.8 KM) SOUTH OF MOUNT AIRY, 2.9
 JV2551'MI (4.7 KM) NORTHEAST OF FRIENDSHIP AND 2.6 MI (4.2 KM) EAST-NORTHEAST
 JV2551'OF CLAGGETTSVILLE.
 JV2551'
 JV2551'TO REACH FROM THE INTERSTATE HIGHWAY 70 BRIDGE OVER STATE HIGHWAY 27
 JV2551'IN MOUNT AIRY, GO SOUTH ON STATE HIGHWAY 27 FOR 0.65 MI (1.0 KM) TO
 JV2551'SIDE ROAD ON THE LEFT.  TURN LEFT AND GO EAST ON PENN SHOP ROAD FOR
 JV2551'1.5 MI (2.4 KM) TO Y-INTERSECTION.  TAKE THE RIGHT FORK AND GO SOUTH
 JV2551'ON LONG CORNER ROAD FOR 0.3 MI (0.5 KM) TO THE STATION ON THE RIGHT.
 JV2551'
 JV2551'IT IS 36.3 FT (11.1 M) WEST OF THE CENTERLINE OF THE ROAD, 42.3 FT
 JV2551'(12.9 M) SOUTHWEST OF P AND E SYSTEM POLE NUMBER F28635, IN THE
 JV2551'SOUTHEAST CORNER OF A GRASS LAWN TO A 1 1/2 STORY FRAME HOUSE NUMBER
 JV2551'1452 AND SET IN THE TOP OF A 6-IN (15 CM) SQUARE CONCRETE POST.
 JV2551
 JV2551                          STATION RECOVERY (2007)
 JV2551
 JV2551'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 JV2551'RECOVERED IN GOOD CONDITION.
 JV2551
 JV2551                          STATION RECOVERY (2009)
 JV2551
 JV2551'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV2551'RECOVERED AS DESCRIBED.
 JV2551
 JV2551                          STATION RECOVERY (2017)
 JV2551
 JV2551'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV2551'RECOVERED IN GOOD CONDITION.
 JV2551
 JV2551                          STATION RECOVERY (2017)
 JV2551
 JV2551'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (GS)
 JV2551'RECOVERED AS DESCRIBED.
 JV2551
 JV2551                          STATION RECOVERY (2018)
 JV2551
 JV2551'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2018 (RWA)
 JV2551'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2961 ***********************************************************************
 JV2961  DESIGNATION -  E 88
 JV2961  PID         -  JV2961
 JV2961  STATE/COUNTY-  MD/FREDERICK
 JV2961  COUNTRY     -  US
 JV2961  USGS QUAD   -  MIDDLETOWN (2016)
 JV2961
 JV2961                         *CURRENT SURVEY CONTROL
 JV2961  ______________________________________________________________________
 JV2961* NAD 83(1986) POSITION- 39 25 52.     (N) 077 30 34.     (W)   SCALED
 JV2961* NAVD 88 ORTHO HEIGHT -   201.644 (meters)      661.56  (feet) ADJUSTED
 JV2961  ______________________________________________________________________
 JV2961  GEOID HEIGHT    -        -32.913 (meters)                     GEOID18
 JV2961  DYNAMIC HEIGHT  -        201.533 (meters)      661.20  (feet) COMP
 JV2961  MODELED GRAVITY -    980,070.0   (mgal)                       NAVD 88
 JV2961
 JV2961  VERT ORDER      -  SECOND    CLASS 0
 JV2961
 JV2961.The horizontal coordinates were scaled from a map and have
 JV2961.an estimated accuracy of +/- 6 seconds.
 JV2961
 JV2961.The orthometric height was determined by differential leveling and
 JV2961.adjusted by the NATIONAL GEODETIC SURVEY
 JV2961.in June 1991.
 JV2961
 JV2961.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2961.GEOID18 height accuracy estimate available here.
 JV2961
 JV2961.Click photographs - Photos may exist for this station.
 JV2961
 JV2961.The dynamic height is computed by dividing the NAVD 88
 JV2961.geopotential number by the normal gravity value computed on the
 JV2961.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2961.degrees latitude (g = 980.6199 gals.).
 JV2961
 JV2961.The modeled gravity was interpolated from observed gravity values.
 JV2961
 JV2961;                    North         East    Units  Estimated Accuracy
 JV2961;SPC MD       -   195,990.      356,140.      MT  (+/- 180 meters Scaled)
 JV2961
 JV2961_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ840676(NAD 83)
 JV2961
 JV2961                          SUPERSEDED SURVEY CONTROL
 JV2961
 JV2961  NGVD 29 (11/26/84)  201.860  (m)          662.27   (f) ADJUSTED    2 0
 JV2961
 JV2961.Superseded values are not recommended for survey control.
 JV2961
 JV2961.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2961.See file dsdata.pdf to determine how the superseded data were derived.
 JV2961
 JV2961_MARKER: DB = BENCH MARK DISK
 JV2961_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2961_SP_SET: OVERPASS
 JV2961_STAMPING: E 88 1942
 JV2961_MARK LOGO: CGS
 JV2961_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2961
 JV2961  HISTORY     - Date     Condition        Report By
 JV2961  HISTORY     - 1942     MONUMENTED       CGS
 JV2961  HISTORY     - 20071228 GOOD             GEOCAC
 JV2961
 JV2961                          STATION DESCRIPTION
 JV2961
 JV2961'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2961'2.1 MI SE FROM MIDDLETOWN.
 JV2961'2.1 MILES SOUTHEAST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION OF
 JV2961'STATE HIGHWAY 17 AT MIDDLETOWN, FREDERICK COUNTY, 27.3 FEET
 JV2961'SOUTHEAST OF HIGHWAY MARKER 47, 33 FEET NORTHEAST OF THE CENTER
 JV2961'LINE OF THE HIGHWAY, 17.9 FEET NORTHEAST OF THE NORTHEAST END OF
 JV2961'A 4-FOOT CONCRETE-BOX CULVERT, AT A RAILROAD OVERPASS, IN THE TOP
 JV2961'OF THE SOUTHWEST END OF THE NORTHWEST RETAINING WALL, 3 FEET
 JV2961'HIGHER THAN THE HIGHWAY, AND ABOUT 3 FEET LOWER THAN THE TRACK.  A
 JV2961'STANDARD DISK, STAMPED E 88 1942.
 JV2961
 JV2961                          STATION RECOVERY (2007)
 JV2961
 JV2961'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV2961'THE RAILROAD HAS BEEN REMOVED.  THE CULVERT IS OBVIOUS BY THE ROADSIDE
 JV2961'AND THE MARK IS IN EXCELLENT CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3526 ***********************************************************************
 JV3526  DESIGNATION -  E 89
 JV3526  PID         -  JV3526
 JV3526  STATE/COUNTY-  MD/FREDERICK
 JV3526  COUNTRY     -  US
 JV3526  USGS QUAD   -  MYERSVILLE (2016)
 JV3526
 JV3526                         *CURRENT SURVEY CONTROL
 JV3526  ______________________________________________________________________
 JV3526* NAD 83(1986) POSITION- 39 30 37.     (N) 077 33 25.     (W)   SCALED
 JV3526* NAVD 88 ORTHO HEIGHT -   178.889 (meters)      586.91  (feet) ADJUSTED
 JV3526  ______________________________________________________________________
 JV3526  GEOID HEIGHT    -        -33.211 (meters)                     GEOID18
 JV3526  DYNAMIC HEIGHT  -        178.788 (meters)      586.57  (feet) COMP
 JV3526  MODELED GRAVITY -    980,062.3   (mgal)                       NAVD 88
 JV3526
 JV3526  VERT ORDER      -  SECOND    CLASS I
 JV3526
 JV3526.The horizontal coordinates were scaled from a map and have
 JV3526.an estimated accuracy of +/- 6 seconds.
 JV3526
 JV3526.The orthometric height was determined by differential leveling and
 JV3526.adjusted by the NATIONAL GEODETIC SURVEY
 JV3526.in June 1991.
 JV3526
 JV3526.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3526.GEOID18 height accuracy estimate available here.
 JV3526
 JV3526.Click photographs - Photos may exist for this station.
 JV3526
 JV3526.The dynamic height is computed by dividing the NAVD 88
 JV3526.geopotential number by the normal gravity value computed on the
 JV3526.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3526.degrees latitude (g = 980.6199 gals.).
 JV3526
 JV3526.The modeled gravity was interpolated from observed gravity values.
 JV3526
 JV3526;                    North         East    Units  Estimated Accuracy
 JV3526;SPC MD       -   204,800.      352,100.      MT  (+/- 180 meters Scaled)
 JV3526
 JV3526_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ801765(NAD 83)
 JV3526
 JV3526                          SUPERSEDED SURVEY CONTROL
 JV3526
 JV3526  NGVD 29 (11/26/84)  179.099  (m)          587.59   (f) ADJUSTED    2 0
 JV3526
 JV3526.Superseded values are not recommended for survey control.
 JV3526
 JV3526.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3526.See file dsdata.pdf to determine how the superseded data were derived.
 JV3526
 JV3526_MARKER: DB = BENCH MARK DISK
 JV3526_SETTING: 80 = SET IN A BOULDER
 JV3526_STAMPING: E 89 1942
 JV3526_MARK LOGO: CGS
 JV3526_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3526_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3526+STABILITY: SURFACE MOTION
 JV3526
 JV3526  HISTORY     - Date     Condition        Report By
 JV3526  HISTORY     - 1942     MONUMENTED       CGS
 JV3526  HISTORY     - 1958     GOOD             CGS
 JV3526  HISTORY     - 20011121 GOOD             MDSHA
 JV3526
 JV3526                          STATION DESCRIPTION
 JV3526
 JV3526'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3526'0.6 MI NE FROM MYERSVILLE.
 JV3526'0.6 MILE NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV3526'AT MYERSVILLE, 83.0 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A
 JV3526'BRICK FARMHOUSE, 71.0 FEET NORTHWEST OF THE NORTHWEST CORNER OF
 JV3526'A WASHHOUSE, 49.0 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY,
 JV3526'ABOUT 4 FEET HIGHER THAN THE HIGHWAY, AND IN THE WEST SIDE OF
 JV3526'A BOULDER.
 JV3526
 JV3526                          STATION RECOVERY (2001)
 JV3526
 JV3526'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3526'RECOVERED IN GOOD CONDITION. STATE HIGHWAY 153 IS NOW STATE HIGHWAY
 JV3526'17. THE STATION IS ALSO 0.15 MI (0.24 KM) NORTHEAST ALONG STATE
 JV3526'HIGHWAY 17 FROM THE INTERSECTION WITH U.S.40 IN MYERSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0056 ***********************************************************************
 HV0056  DESIGNATION -  E 9
 HV0056  PID         -  HV0056
 HV0056  STATE/COUNTY-  MD/QUEEN ANNES
 HV0056  COUNTRY     -  US
 HV0056  USGS QUAD   -  WYE MILLS (2016)
 HV0056
 HV0056                         *CURRENT SURVEY CONTROL
 HV0056  ______________________________________________________________________
 HV0056* NAD 83(1986) POSITION- 38 57 50.8    (N) 076 04 40.1    (W)   HD_HELD2
 HV0056* NAVD 88 ORTHO HEIGHT -    17.742 (meters)       58.21  (feet) ADJUSTED
 HV0056  ______________________________________________________________________
 HV0056  GEOID HEIGHT    -        -34.118 (meters)                     GEOID18
 HV0056  DYNAMIC HEIGHT  -         17.732 (meters)       58.18  (feet) COMP
 HV0056  MODELED GRAVITY -    980,070.3   (mgal)                       NAVD 88
 HV0056
 HV0056  VERT ORDER      -  FIRST     CLASS II
 HV0056
 HV0056.The horizontal coordinates were established by autonomous hand held GPS
 HV0056.observations and have an estimated accuracy of +/- 10 meters.
 HV0056
 HV0056.The orthometric height was determined by differential leveling and
 HV0056.adjusted by the NATIONAL GEODETIC SURVEY
 HV0056.in June 1991.
 HV0056
 HV0056.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0056.GEOID18 height accuracy estimate available here.
 HV0056
 HV0056.Click photographs - Photos may exist for this station.
 HV0056
 HV0056.The dynamic height is computed by dividing the NAVD 88
 HV0056.geopotential number by the normal gravity value computed on the
 HV0056.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0056.degrees latitude (g = 980.6199 gals.).
 HV0056
 HV0056.The modeled gravity was interpolated from observed gravity values.
 HV0056
 HV0056;                    North         East    Units  Estimated Accuracy
 HV0056;SPC MD       -   144,426.      479,921.      MT  (+/- 10 meters HH2 GPS)
 HV0056
 HV0056_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0662213346(NAD 83)
 HV0056
 HV0056                          SUPERSEDED SURVEY CONTROL
 HV0056
 HV0056  NGVD 29 (11/26/84)   17.970  (m)           58.96   (f) ADJUSTED    1 2
 HV0056
 HV0056.Superseded values are not recommended for survey control.
 HV0056
 HV0056.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0056.See file dsdata.pdf to determine how the superseded data were derived.
 HV0056
 HV0056_MARKER: DB = BENCH MARK DISK
 HV0056_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0056_STAMPING: E 9 1935
 HV0056_MARK LOGO: CGS
 HV0056_PROJECTION: RECESSED 8 CENTIMETERS
 HV0056_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0056+STABILITY: SURFACE MOTION
 HV0056
 HV0056  HISTORY     - Date     Condition        Report By
 HV0056  HISTORY     - 1935     MONUMENTED       CGS
 HV0056  HISTORY     - 1971     GOOD             NGS
 HV0056  HISTORY     - 20010324 GOOD             USPSQD
 HV0056
 HV0056                          STATION DESCRIPTION
 HV0056
 HV0056'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0056'1.6 MI N FROM WYE MILLS.
 HV0056'ABOUT 0.95 MILE NORTH ALONG STATE HIGHWAY 626 FROM THE POST OFFICE
 HV0056'AT WYE MILLS, THENCE 0.7 MILE NORTH ALONG U.S. HIGHWAY 213, AT THE
 HV0056'CROSSING OF THE BALTIMORE AND EASTERN RAILROAD, 40.6 FEET WEST
 HV0056'OF THE CENTER LINE OF THE HIGHWAY, 30.1 FEET SOUTHWEST OF THE
 HV0056'SOUTHWEST RAIL OF THE TRACK, 22.9 FEET NORTH OF THE CENTER LINE
 HV0056'OF A FARM ROAD, 12 1/2 FEET NORTHEAST OF POWER LINE POLE NO. T
 HV0056'13, 1 FOOT EAST OF A METAL WITNESS POST, 1 FOOT ABOVE THE LEVEL
 HV0056'OF THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST 3 INCHES
 HV0056'BELOW THE LEVEL OF THE GROUND.
 HV0056
 HV0056                          STATION RECOVERY (2001)
 HV0056
 HV0056'RECOVERY NOTE BY US POWER SQUADRON 2001 (KNP)
 HV0056'RAILROAD DOES NOT EXIST. RIGHT OF WAY REMAINS. POWER POLE T13 DOES NOT
 HV0056'EXIST.MARK IS 50.0 FEET NORTH OF DPL POWER POLE 33398 AND 41.0 FEET
 HV0056'WEST OF THE CENTER LINE OF RT 213.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1886 ***********************************************************************
 JV1886  DESIGNATION -  E 90 RESET
 JV1886  PID         -  JV1886
 JV1886  STATE/COUNTY-  MD/FREDERICK
 JV1886  COUNTRY     -  US
 JV1886  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV1886
 JV1886                         *CURRENT SURVEY CONTROL
 JV1886  ______________________________________________________________________
 JV1886* NAD 83(1986) POSITION- 39 32 41.     (N) 077 25 36.     (W)   SCALED
 JV1886* NAVD 88 ORTHO HEIGHT -   127.50  (meters)      418.3   (feet) RESET
 JV1886  ______________________________________________________________________
 JV1886  GEOID HEIGHT    -        -32.997 (meters)                     GEOID18
 JV1886  VERT ORDER      -  THIRD
 JV1886
 JV1886.The horizontal coordinates were scaled from a map and have
 JV1886.an estimated accuracy of +/- 6 seconds.
 JV1886
 JV1886.The orthometric height was computed from unverified reset data.
 JV1886
 JV1886.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1886.GEOID18 height accuracy estimate available here.
 JV1886
 JV1886.Click photographs - Photos may exist for this station.
 JV1886
 JV1886;                    North         East    Units  Estimated Accuracy
 JV1886;SPC MD       -   208,570.      363,320.      MT  (+/- 180 meters Scaled)
 JV1886
 JV1886_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ914800(NAD 83)
 JV1886
 JV1886                          SUPERSEDED SURVEY CONTROL
 JV1886
 JV1886  NGVD 29 (??/??/??)  127.70   (m)          419.0    (f) RESET       3  
 JV1886
 JV1886.Superseded values are not recommended for survey control.
 JV1886
 JV1886.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1886.See file dsdata.pdf to determine how the superseded data were derived.
 JV1886
 JV1886_MARKER: DB = BENCH MARK DISK
 JV1886_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1886_STAMPING: E 90 RESET 1961
 JV1886_MARK LOGO: CGS
 JV1886_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1886+STABILITY: SURFACE MOTION
 JV1886
 JV1886  HISTORY     - Date     Condition        Report By
 JV1886  HISTORY     - 1961     MONUMENTED       MDSRC
 JV1886
 JV1886                          STATION DESCRIPTION
 JV1886
 JV1886'DESCRIBED BY MD STATE ROADS COMM 1961
 JV1886'1.2 MI NE FROM LEWISTOWN.
 JV1886'THIS MARK IS LOCATED 1.2 MILES NORTHEAST ALONG U.S. ROUTE 15
 JV1886'FROM THE RAILROAD CROSSING AT LEWISTOWN, AT THE INTERSECTION OF
 JV1886'PUTNAM ROAD (GRAVEL ROAD LEADING WESTERLY), 106.0 FEET WEST OF
 JV1886'THE CENTERLINE OF U.S. ROUTE 15, 13.5 FEET NORTH OF THE CENTERLINE
 JV1886'OF PUTNAM ROAD, AND 2.0 FEET EAST OF CHESAPEAKE AND POTOMAC POLE
 JV1886'1, AND SET IN CONCRETE POST PROJECTING 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0776 ***********************************************************************
 JV0776  DESIGNATION -  E 92
 JV0776  PID         -  JV0776
 JV0776  STATE/COUNTY-  MD/BALTIMORE
 JV0776  COUNTRY     -  US
 JV0776  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0776
 JV0776                         *CURRENT SURVEY CONTROL
 JV0776  ______________________________________________________________________
 JV0776* NAD 83(1986) POSITION- 39 21 58.     (N) 076 46 22.     (W)   SCALED
 JV0776* NAVD 88 ORTHO HEIGHT -   154.560 (meters)      507.09  (feet) ADJUSTED
 JV0776  ______________________________________________________________________
 JV0776  GEOID HEIGHT    -        -32.185 (meters)                     GEOID18
 JV0776  DYNAMIC HEIGHT  -        154.479 (meters)      506.82  (feet) COMP
 JV0776  MODELED GRAVITY -    980,102.5   (mgal)                       NAVD 88
 JV0776
 JV0776  VERT ORDER      -  SECOND    CLASS 0
 JV0776
 JV0776.The horizontal coordinates were scaled from a map and have
 JV0776.an estimated accuracy of +/- 6 seconds.
 JV0776
 JV0776.The orthometric height was determined by differential leveling and
 JV0776.adjusted by the NATIONAL GEODETIC SURVEY
 JV0776.in June 1991.
 JV0776
 JV0776.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0776.GEOID18 height accuracy estimate available here.
 JV0776
 JV0776.Click photographs - Photos may exist for this station.
 JV0776
 JV0776.The dynamic height is computed by dividing the NAVD 88
 JV0776.geopotential number by the normal gravity value computed on the
 JV0776.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0776.degrees latitude (g = 980.6199 gals.).
 JV0776
 JV0776.The modeled gravity was interpolated from observed gravity values.
 JV0776
 JV0776;                    North         East    Units  Estimated Accuracy
 JV0776;SPC MD       -   188,670.      419,580.      MT  (+/- 180 meters Scaled)
 JV0776
 JV0776_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ472589(NAD 83)
 JV0776
 JV0776                          SUPERSEDED SURVEY CONTROL
 JV0776
 JV0776  NGVD 29 (11/26/84)  154.781  (m)          507.81   (f) ADJUSTED    2 0
 JV0776
 JV0776.Superseded values are not recommended for survey control.
 JV0776
 JV0776.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0776.See file dsdata.pdf to determine how the superseded data were derived.
 JV0776
 JV0776_MARKER: DB = BENCH MARK DISK
 JV0776_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0776_STAMPING: E 92 1942
 JV0776_MARK LOGO: CGS
 JV0776_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0776+STABILITY: SURFACE MOTION
 JV0776
 JV0776  HISTORY     - Date     Condition        Report By
 JV0776  HISTORY     - 1942     MONUMENTED       CGS
 JV0776  HISTORY     - 1967     GOOD             CGS
 JV0776  HISTORY     - 1974     MARK NOT FOUND   MDDT
 JV0776  HISTORY     - 19950725 MARK NOT FOUND   USPSQD
 JV0776
 JV0776                          STATION DESCRIPTION
 JV0776
 JV0776'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JV0776'2.7 MI SW FROM PIKESVILLE.
 JV0776'2.7 MILES SOUTHWEST ALONG STATE HIGHWAY 125 FROM THE JUNCTION
 JV0776'OF U.S. HIGHWAY 140 AT PIKESVILLE, BALTIMORE COUNTY, SOUTH OF
 JV0776'THE T-JUNCTION OF A DIRT ROAD, 19.0 FOOT SOUTH OF THE CENTER
 JV0776'LINE OF THE HIGHWAY, 6 FEET WEST OF POLE 118, 31 FEET SOUTH
 JV0776'OF A BRACE POLE, AND NEAR A WHITE WOODEN WITNESS POST.  A
 JV0776'STANDARD DISK, STAMPED E 92 1942 AND SET IN THE TOP OF A CONCRETE
 JV0776'POST.
 JV0776
 JV0776                          STATION RECOVERY (1974)
 JV0776
 JV0776'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1974
 JV0776'MARK NOT FOUND.
 JV0776
 JV0776                          STATION RECOVERY (1995)
 JV0776
 JV0776'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0776'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1875 ***********************************************************************
 JV1875  DESIGNATION -  E 93
 JV1875  PID         -  JV1875
 JV1875  STATE/COUNTY-  MD/FREDERICK
 JV1875  COUNTRY     -  US
 JV1875  USGS QUAD   -  UNION BRIDGE (2016)
 JV1875
 JV1875                         *CURRENT SURVEY CONTROL
 JV1875  ______________________________________________________________________
 JV1875* NAD 83(1986) POSITION- 39 32 19.     (N) 077 10 25.     (W)   SCALED
 JV1875* NAVD 88 ORTHO HEIGHT -   152.220 (meters)      499.41  (feet) ADJUSTED
 JV1875  ______________________________________________________________________
 JV1875  GEOID HEIGHT    -        -32.497 (meters)                     GEOID18
 JV1875  DYNAMIC HEIGHT  -        152.140 (meters)      499.15  (feet) COMP
 JV1875  MODELED GRAVITY -    980,098.0   (mgal)                       NAVD 88
 JV1875
 JV1875  VERT ORDER      -  SECOND    CLASS 0
 JV1875
 JV1875.The horizontal coordinates were scaled from a map and have
 JV1875.an estimated accuracy of +/- 6 seconds.
 JV1875
 JV1875.The orthometric height was determined by differential leveling and
 JV1875.adjusted by the NATIONAL GEODETIC SURVEY
 JV1875.in June 1991.
 JV1875
 JV1875.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1875.GEOID18 height accuracy estimate available here.
 JV1875
 JV1875.Click photographs - Photos may exist for this station.
 JV1875
 JV1875.The dynamic height is computed by dividing the NAVD 88
 JV1875.geopotential number by the normal gravity value computed on the
 JV1875.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1875.degrees latitude (g = 980.6199 gals.).
 JV1875
 JV1875.The modeled gravity was interpolated from observed gravity values.
 JV1875
 JV1875;                    North         East    Units  Estimated Accuracy
 JV1875;SPC MD       -   207,820.      385,080.      MT  (+/- 180 meters Scaled)
 JV1875
 JV1875_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ132788(NAD 83)
 JV1875
 JV1875                          SUPERSEDED SURVEY CONTROL
 JV1875
 JV1875  NGVD 29 (11/26/84)  152.427  (m)          500.09   (f) ADJUSTED    2 0
 JV1875
 JV1875.Superseded values are not recommended for survey control.
 JV1875
 JV1875.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1875.See file dsdata.pdf to determine how the superseded data were derived.
 JV1875
 JV1875_MARKER: DB = BENCH MARK DISK
 JV1875_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1875_STAMPING: E 93 1942
 JV1875_MARK LOGO: CGS
 JV1875_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1875+STABILITY: SURFACE MOTION
 JV1875
 JV1875  HISTORY     - Date     Condition        Report By
 JV1875  HISTORY     - 1942     MONUMENTED       CGS
 JV1875
 JV1875                          STATION DESCRIPTION
 JV1875
 JV1875'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1875'2.3 MI S FROM UNION BRIDGE.
 JV1875'2.3 MILES SOUTH ALONG THE UNIONVILLE ROAD FROM THE RAILROAD
 JV1875'STATION AT UNION BRIDGE, FREDERICK COUNTY, 24 FEET WEST OF THE
 JV1875'CENTER LINE OF THE HIGHWAY, 5 FEET NORTH OF POWER-TRANSMISSION
 JV1875'LINE POLE N 5, 3 FEET EAST OF A NORTH-AND-SOUTH FENCE, AND NEAR
 JV1875'A WHITE WOODEN WITNESS POST.  A STANDARD DISK, STAMPED E 93 1942
 JV1875'AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0155 ***********************************************************************
 JV0155  DESIGNATION -  E 96
 JV0155  PID         -  JV0155
 JV0155  STATE/COUNTY-  MD/CECIL
 JV0155  COUNTRY     -  US
 JV0155  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0155
 JV0155                         *CURRENT SURVEY CONTROL
 JV0155  ______________________________________________________________________
 JV0155* NAD 83(2011) POSITION- 39 35 50.06587(N) 076 05 29.62123(W)   ADJUSTED
 JV0155* NAD 83(2011) ELLIP HT-    71.112 (meters)        (06/27/12)   ADJUSTED
 JV0155* NAD 83(2011) EPOCH   -  2010.00
 JV0155* NAVD 88 ORTHO HEIGHT -   104.154 (meters)      341.71  (feet) ADJUSTED
 JV0155  ______________________________________________________________________
 JV0155  GEOID HEIGHT    -        -33.050 (meters)                     GEOID18
 JV0155  NAD 83(2011) X  -  1,182,958.602 (meters)                     COMP
 JV0155  NAD 83(2011) Y  - -4,777,096.696 (meters)                     COMP
 JV0155  NAD 83(2011) Z  -  4,043,673.645 (meters)                     COMP
 JV0155  LAPLACE CORR    -         -1.49  (seconds)                    DEFLEC18
 JV0155  DYNAMIC HEIGHT  -        104.102 (meters)      341.54  (feet) COMP
 JV0155  MODELED GRAVITY -    980,130.3   (mgal)                       NAVD 88
 JV0155
 JV0155  VERT ORDER      -  SECOND    CLASS 0
 JV0155
 JV0155  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0155  Standards:
 JV0155         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0155            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0155  -------------------------------------------------------------------
 JV0155  NETWORK    0.54   1.27           0.23   0.21   0.65      0.09561189
 JV0155  -------------------------------------------------------------------
 JV0155  Click here for local accuracies and other accuracy information.
 JV0155
 JV0155.The horizontal coordinates were established by GPS observations
 JV0155.and adjusted by the National Geodetic Survey in June 2012.
 JV0155
 JV0155.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0155.been affixed to the stable North American tectonic plate. See 
 JV0155.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0155
 JV0155.The horizontal coordinates are valid at the epoch date displayed above
 JV0155.which is a decimal equivalence of Year/Month/Day.
 JV0155
 JV0155.The orthometric height was determined by differential leveling and
 JV0155.adjusted by the NATIONAL GEODETIC SURVEY
 JV0155.in June 1991.
 JV0155
 JV0155.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0155.GEOID18 height accuracy estimate available here.
 JV0155
 JV0155.Click photographs - Photos may exist for this station.
 JV0155
 JV0155.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0155
 JV0155.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0155
 JV0155.The ellipsoidal height was determined by GPS observations
 JV0155.and is referenced to NAD 83.
 JV0155
 JV0155.The dynamic height is computed by dividing the NAVD 88
 JV0155.geopotential number by the normal gravity value computed on the
 JV0155.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0155.degrees latitude (g = 980.6199 gals.).
 JV0155
 JV0155.The modeled gravity was interpolated from observed gravity values.
 JV0155
 JV0155. The following values were computed from the NAD 83(2011) position.
 JV0155
 JV0155;                    North         East     Units Scale Factor Converg.
 JV0155;SPC MD       -   214,699.590   478,029.892   MT  1.00002908   +0 34 12.6
 JV0155;SPC MD       -   704,393.57  1,568,336.40   sFT  1.00002908   +0 34 12.6
 JV0155;UTM  18      - 4,383,625.484   406,278.459   MT  0.99970814   -0 41 44.9
 JV0155
 JV0155!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0155!SPC MD       -   0.99998884  x   1.00002908  =   1.00001792
 JV0155!UTM  18      -   0.99998884  x   0.99970814  =   0.99969699
 JV0155
 JV0155_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0627883625(NAD 83)
 JV0155
 JV0155                          SUPERSEDED SURVEY CONTROL
 JV0155
 JV0155  NAD 83(2007)-  39 35 50.06590(N)    076 05 29.62220(W) AD(2002.00) 1
 JV0155  ELLIP H (02/23/12)   71.146  (m)                       GP(2002.00) 4 1
 JV0155  NAVD 88             104.15   (m)          341.7    (f) LEVELING    3  
 JV0155  NGVD 29 (11/26/84)  104.422  (m)          342.59   (f) ADJUSTED    2 0
 JV0155
 JV0155.Superseded values are not recommended for survey control.
 JV0155
 JV0155.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0155.See file dsdata.pdf to determine how the superseded data were derived.
 JV0155
 JV0155_MARKER: DB = BENCH MARK DISK
 JV0155_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 JV0155_SP_SET: MASS
 JV0155_STAMPING: E 96 1959
 JV0155_MARK LOGO: CGS
 JV0155_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0155_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0155+SATELLITE: SATELLITE OBSERVATIONS - October 06, 2025
 JV0155
 JV0155  HISTORY     - Date     Condition        Report By
 JV0155  HISTORY     - 1959     MONUMENTED       CGS
 JV0155  HISTORY     - 1964     GOOD             CGS
 JV0155  HISTORY     - 19901201 GOOD             USPSQD
 JV0155  HISTORY     - 20030809 GOOD             GEOCAC
 JV0155  HISTORY     - 20090309 GOOD             GWS
 JV0155  HISTORY     - 20251006 GOOD             PROFLN
 JV0155
 JV0155                          STATION DESCRIPTION
 JV0155
 JV0155'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0155'3.6 MI NW FROM PERRYVILLE.
 JV0155'ABOUT 1.7 MILE NORTH ALONG U.S. HIGHWAY 222 FROM THE
 JV0155'INTERSECTION OF U.S. HIGHWAY 40 AT PERRYVILLE TO BRIDGE OVER THE
 JV0155'NORTHEASTERN EXPRESSWAY INTERCHANGE, THENCE 0.45 MILE TO THE
 JV0155'OLD HIGHWAY, THENCE 1.25 MILE WESTERLY ALONG HIGHWAY 222,
 JV0155'THENCE 0.2 MILE SOUTHWEST ALONG A MACADAM ROAD.  AT A CROSSROADS,
 JV0155'94.5 FEET SOUTH OF THE SOUTHEAST CORNER OF A CONCRETE SLAB
 JV0155'OVER A BASEMENT, 47 FEET SOUTH-SOUTHWEST OF CENTER OF THE CROSSROADS,
 JV0155'16 FEET NORTHWEST OF CENTERLINE OF A MACADAM ROAD AND 1 FOOT
 JV0155'NORTH OF A BOARD FENCE CORNER.  A STANDARD DISK IN THE TOP
 JV0155'OF A MASS OF CONCRETE AND 3 INCHES BELOW SURFACE OF THE GROUND.
 JV0155
 JV0155                          STATION RECOVERY (1990)
 JV0155
 JV0155'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0155'RECOVERED IN GOOD CONDITION.
 JV0155
 JV0155                          STATION RECOVERY (2003)
 JV0155
 JV0155'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV0155'STATION IS LOCATED IN THE SOUTHWEST QUADRANT OF THE INTERSECTION OF
 JV0155'FRENCHTOWN ROAD AND MT. ARARAT ROAD (WHICH IS THE UNNAMED MACADAM ROAD
 JV0155'MENTIONED IN THE 1964 DESCRIPTION). STATION DISK IS APPROXIMATELY 15
 JV0155'FEET NORTH NORTHEAST OF A 'PRIVATE ROAD' SIGN.
 JV0155
 JV0155                          STATION RECOVERY (2009)
 JV0155
 JV0155'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2009 (JMS)
 JV0155'RECOVERED AS DESCRIBED.
 JV0155
 JV0155                          STATION RECOVERY (2025)
 JV0155
 JV0155'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0155'THE MARK IS 56 FT (17.1 M) WEST DIAGONAL ACROSS MOUNT ARARAT FARM ROAD
 JV0155'FROM POLE 3476-16 WITH GUY WIRE AT THE EAST CORNER OF THE
 JV0155'INTERSECTION, 48 FT (14.6 M) SOUTH OF POLE 363-25, 46 FT (14.0 M)
 JV0155'SOUTHWEST OF FRENCHTOWN ROAD EXTENDED, 39 FT (11.9 M) WEST ACROSS THE
 JV0155'FARM ROAD FROM A STOP SIGN, 29 FT (8.8 M) SOUTHWEST OF THE CENTRAL ONE
 JV0155'OF SEVERAL UTILITY OVERHEAD WIRES, 16.5 5 NE OF A SIGN - PRIVATE ROAD
 JV0155'- 14 FT (4.3 M) NORTHWEST OF THE FARM ROAD.  THE CONCRETE AROUND THE
 JV0155'MARK WAS ANGLED TO MATCH THE SIDE SLOPE.  DID NOT SEE ANY CONCRETE
 JV0155'SLAB OVER A BASEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1471 ***********************************************************************
 JV1471  DESIGNATION -  E 97
 JV1471  PID         -  JV1471
 JV1471  STATE/COUNTY-  MD/BALTIMORE
 JV1471  COUNTRY     -  US
 JV1471  USGS QUAD   -  HEREFORD (2016)
 JV1471
 JV1471                         *CURRENT SURVEY CONTROL
 JV1471  ______________________________________________________________________
 JV1471* NAD 83(1986) POSITION- 39 30 35.     (N) 076 39 49.     (W)   SCALED
 JV1471* NAVD 88 ORTHO HEIGHT -    91.657 (meters)      300.71  (feet) ADJUSTED
 JV1471  ______________________________________________________________________
 JV1471  GEOID HEIGHT    -        -32.333 (meters)                     GEOID18
 JV1471  DYNAMIC HEIGHT  -         91.611 (meters)      300.56  (feet) COMP
 JV1471  MODELED GRAVITY -    980,117.9   (mgal)                       NAVD 88
 JV1471
 JV1471  VERT ORDER      -  SECOND    CLASS 0
 JV1471
 JV1471.The horizontal coordinates were scaled from a map and have
 JV1471.an estimated accuracy of +/- 6 seconds.
 JV1471
 JV1471.The orthometric height was determined by differential leveling and
 JV1471.adjusted by the NATIONAL GEODETIC SURVEY
 JV1471.in June 1991.
 JV1471
 JV1471.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1471.GEOID18 height accuracy estimate available here.
 JV1471
 JV1471.Click photographs - Photos may exist for this station.
 JV1471
 JV1471.The dynamic height is computed by dividing the NAVD 88
 JV1471.geopotential number by the normal gravity value computed on the
 JV1471.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1471.degrees latitude (g = 980.6199 gals.).
 JV1471
 JV1471.The modeled gravity was interpolated from observed gravity values.
 JV1471
 JV1471;                    North         East    Units  Estimated Accuracy
 JV1471;SPC MD       -   204,650.      428,930.      MT  (+/- 180 meters Scaled)
 JV1471
 JV1471_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ569746(NAD 83)
 JV1471
 JV1471                          SUPERSEDED SURVEY CONTROL
 JV1471
 JV1471  NGVD 29 (11/26/84)   91.866  (m)          301.40   (f) ADJUSTED    2 0
 JV1471
 JV1471.Superseded values are not recommended for survey control.
 JV1471
 JV1471.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1471.See file dsdata.pdf to determine how the superseded data were derived.
 JV1471
 JV1471_MARKER: DB = BENCH MARK DISK
 JV1471_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1471_SP_SET: BRIDGE
 JV1471_STAMPING: E 97 1959
 JV1471_MARK LOGO: CGS
 JV1471_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1471
 JV1471  HISTORY     - Date     Condition        Report By
 JV1471  HISTORY     - 1959     MONUMENTED       CGS
 JV1471
 JV1471                          STATION DESCRIPTION
 JV1471
 JV1471'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1471'2.1 MI NW FROM MARBLE HILL.
 JV1471'1.0 MILE WEST ALONG SHAWAN ROAD FROM THE JUNCTION OF STATE HIGHWAY
 JV1471'45 AT MARBLE HILL, THENCE 1.1 MILES NORTH ALONG NEW U.S. HIGHWAY 111,
 JV1471'AT A LARGE CONCRETE BRIDGE OF THE NORTH BOUND LANE OF THE HIGHWAY
 JV1471'OVER WESTERN RUN CREEK, ON TOP AND AT THE SOUTH END OF THE EAST
 JV1471'CONCRETE WALKWAY OF THE BRIDGE, 1 FOOT NORTH OF THE SOUTH END OF
 JV1471'THE WALKWAY AND 0.6 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4031 ***********************************************************************
 JV4031  DESIGNATION -  E 97 RESET
 JV4031  PID         -  JV4031
 JV4031  STATE/COUNTY-  MD/BALTIMORE
 JV4031  COUNTRY     -  US
 JV4031  USGS QUAD   -  HEREFORD (2016)
 JV4031
 JV4031                         *CURRENT SURVEY CONTROL
 JV4031  ______________________________________________________________________
 JV4031* NAD 83(1986) POSITION- 39 30 35.     (N) 076 39 49.     (W)   SCALED
 JV4031* NAVD 88 ORTHO HEIGHT -    92.03  (+/-2cm)      301.9   (feet) VERTCON3
 JV4031  ______________________________________________________________________
 JV4031  GEOID HEIGHT    -        -32.333 (meters)                     GEOID18
 JV4031  VERT ORDER      -  THIRD (See Below)
 JV4031
 JV4031.The horizontal coordinates were scaled from a map and have
 JV4031.an estimated accuracy of +/- 6 seconds.
 JV4031
 JV4031.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4031.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4031
 JV4031.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4031.GEOID18 height accuracy estimate available here.
 JV4031
 JV4031.The vertical order pertains to the NGVD 29 superseded value.
 JV4031
 JV4031.Click photographs - Photos may exist for this station.
 JV4031
 JV4031;                    North         East    Units  Estimated Accuracy
 JV4031;SPC MD       -   204,650.      428,930.      MT  (+/- 180 meters Scaled)
 JV4031
 JV4031_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ569746(NAD 83)
 JV4031
 JV4031                          SUPERSEDED SURVEY CONTROL
 JV4031
 JV4031  NGVD 29 (??/??/??)   92.25   (m)          302.7    (f) RESET       3  
 JV4031
 JV4031.Superseded values are not recommended for survey control.
 JV4031
 JV4031.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4031.See file dsdata.pdf to determine how the superseded data were derived.
 JV4031
 JV4031_MARKER: DV = VERTICAL CONTROL DISK
 JV4031_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV4031_SP_SET: BRIDGE
 JV4031_STAMPING: E 97 RESET 1981
 JV4031_MARK LOGO: NGS
 JV4031_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV4031
 JV4031  HISTORY     - Date     Condition        Report By
 JV4031  HISTORY     - 1981     MONUMENTED       NGS
 JV4031
 JV4031                          STATION DESCRIPTION
 JV4031
 JV4031'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 JV4031'2.1 MI NW FROM MARBLE HILL.
 JV4031'LOCATED 1.8 KM (1.1 MILES) NORTRH ALONG INTERSTATE HIGHWAY 83 FROM
 JV4031'ITS JUNCTION WITH SHAWN ROAD (EXIT 20), IN THE SOUTH PART OF THE
 JV4031'CONCRETE DIVIDER FOR A HIGHWAY BRIDGE OVER WESTERN RUN, 8.5 METERS
 JV4031'(28.0 FEET) WEST OF THE CENTER OF THE NORTH BOUND LANE OF INTERSTATE
 JV4031'HIGHWAY 83, 8.5 METERS (28.0 FEET) EAST OF THE CENTER OF THE SOUTH
 JV4031'BOUND LANE, 4.7 METERS NORTH OF THE SOUTH END OF THE CONCRETE
 JV4031'DIVIDER AND 0.3 METERS (10 FEET) SOUTH OF A EXPANSION JOINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0219 ***********************************************************************
 JV0219  DESIGNATION -  E 99
 JV0219  PID         -  JV0219
 JV0219  STATE/COUNTY-  MD/HARFORD
 JV0219  COUNTRY     -  US
 JV0219  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0219
 JV0219                         *CURRENT SURVEY CONTROL
 JV0219  ______________________________________________________________________
 JV0219* NAD 83(1986) POSITION- 39 36 23.     (N) 076 26 52.     (W)   SCALED
 JV0219* NAVD 88 ORTHO HEIGHT -   155.930 (meters)      511.58  (feet) ADJUSTED
 JV0219  ______________________________________________________________________
 JV0219  GEOID HEIGHT    -        -32.573 (meters)                     GEOID18
 JV0219  DYNAMIC HEIGHT  -        155.850 (meters)      511.32  (feet) COMP
 JV0219  MODELED GRAVITY -    980,111.9   (mgal)                       NAVD 88
 JV0219
 JV0219  VERT ORDER      -  SECOND    CLASS 0
 JV0219
 JV0219.The horizontal coordinates were scaled from a map and have
 JV0219.an estimated accuracy of +/- 6 seconds.
 JV0219
 JV0219.The orthometric height was determined by differential leveling and
 JV0219.adjusted by the NATIONAL GEODETIC SURVEY
 JV0219.in June 1991.
 JV0219
 JV0219.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0219.GEOID18 height accuracy estimate available here.
 JV0219
 JV0219.Click photographs - Photos may exist for this station.
 JV0219
 JV0219.The dynamic height is computed by dividing the NAVD 88
 JV0219.geopotential number by the normal gravity value computed on the
 JV0219.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0219.degrees latitude (g = 980.6199 gals.).
 JV0219
 JV0219.The modeled gravity was interpolated from observed gravity values.
 JV0219
 JV0219;                    North         East    Units  Estimated Accuracy
 JV0219;SPC MD       -   215,470.      447,430.      MT  (+/- 180 meters Scaled)
 JV0219
 JV0219_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ757850(NAD 83)
 JV0219
 JV0219                          SUPERSEDED SURVEY CONTROL
 JV0219
 JV0219  NGVD 29 (11/26/84)  156.173  (m)          512.38   (f) ADJUSTED    2 0
 JV0219
 JV0219.Superseded values are not recommended for survey control.
 JV0219
 JV0219.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0219.See file dsdata.pdf to determine how the superseded data were derived.
 JV0219
 JV0219_MARKER: DB = BENCH MARK DISK
 JV0219_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0219_STAMPING: E 99 1960
 JV0219_MARK LOGO: CGS
 JV0219_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0219+STABILITY: SURFACE MOTION
 JV0219
 JV0219  HISTORY     - Date     Condition        Report By
 JV0219  HISTORY     - 1960     MONUMENTED       CGS
 JV0219  HISTORY     - 20041010 MARK NOT FOUND   GEOCAC
 JV0219
 JV0219                          STATION DESCRIPTION
 JV0219
 JV0219'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0219'1.6 MI E FROM JARRETTSVILLE.
 JV0219'ABOUT 1.65 MILES EAST ALONG STATE HIGHWAY 23 FROM THE INTERSECTION
 JV0219'OF STATE HIGHWAY 165 AT JARRETTSVILLE, 36 FEET NORTHEAST OF THE
 JV0219'CENTER LINE OF THE HIGHWAY, 76 FEET SOUTH-SOUTHEAST OF THE
 JV0219'SOUTHEAST CORNER OF A TWO-STORY HOME, 21 FEET SOUTHEAST OF THE
 JV0219'CENTER LINE OF A DRIVEWAY, 16 FEET NORTH-NORTHEAST OF POWER LINE
 JV0219'POLE NO. 71425, 18 FEET NORTH-NORTHWEST OF A LONE BLACK WALNUT TREE,
 JV0219'1 FOOT NORTHWEST OF A FENCE LINE, 2 FEET SOUTHWEST OF A STEEL
 JV0219'WITNESS POST, ABOUT 4 FEET ABOVE THE LEVEL OF THE HIGHWAY, AND
 JV0219'SET IN TOP OF A CONCRETE POST PROJECTING 1 INCH.
 JV0219
 JV0219                          STATION RECOVERY (2004)
 JV0219
 JV0219'RECOVERY NOTE BY GEOCACHING 2004 (MFL)
 JV0219'PROPERTY OWNER STATED THAT THE AREA WHERE THE MARK WAS LOCATED HAD
 JV0219'BEEN EXCAVATED. WITNESS POST WAS LOOSE AND FACED AWAY FROM THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0024 ***********************************************************************
 JV0024  DESIGNATION -  E USGS
 JV0024  PID         -  JV0024
 JV0024  STATE/COUNTY-  MD/CECIL
 JV0024  COUNTRY     -  US
 JV0024  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0024
 JV0024                         *CURRENT SURVEY CONTROL
 JV0024  ______________________________________________________________________
 JV0024* NAD 83(1986) POSITION- 39 34 19.     (N) 076 04 46.     (W)   SCALED
 JV0024* NAVD 88 ORTHO HEIGHT -     7.049 (meters)       23.13  (feet) ADJUSTED
 JV0024  ______________________________________________________________________
 JV0024  GEOID HEIGHT    -        -33.118 (meters)                     GEOID18
 JV0024  DYNAMIC HEIGHT  -          7.046 (meters)       23.12  (feet) COMP
 JV0024  MODELED GRAVITY -    980,126.8   (mgal)                       NAVD 88
 JV0024
 JV0024  VERT ORDER      -  FIRST     CLASS I
 JV0024
 JV0024.The horizontal coordinates were scaled from a map and have
 JV0024.an estimated accuracy of +/- 6 seconds.
 JV0024
 JV0024.The orthometric height was determined by differential leveling and
 JV0024.adjusted by the NATIONAL GEODETIC SURVEY
 JV0024.in June 1991.
 JV0024
 JV0024.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0024.GEOID18 height accuracy estimate available here.
 JV0024
 JV0024.Click photographs - Photos may exist for this station.
 JV0024
 JV0024.The dynamic height is computed by dividing the NAVD 88
 JV0024.geopotential number by the normal gravity value computed on the
 JV0024.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0024.degrees latitude (g = 980.6199 gals.).
 JV0024
 JV0024.The modeled gravity was interpolated from observed gravity values.
 JV0024
 JV0024;                    North         East    Units  Estimated Accuracy
 JV0024;SPC MD       -   211,900.      479,100.      MT  (+/- 180 meters Scaled)
 JV0024
 JV0024_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ072808(NAD 83)
 JV0024
 JV0024                          SUPERSEDED SURVEY CONTROL
 JV0024
 JV0024  NGVD 29 (11/26/84)    7.284  (m)           23.90   (f) ADJUSTED    1 1
 JV0024
 JV0024.Superseded values are not recommended for survey control.
 JV0024
 JV0024.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0024.See file dsdata.pdf to determine how the superseded data were derived.
 JV0024
 JV0024_MARKER: Z = SEE DESCRIPTION
 JV0024_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0024_SP_SET: BRIDGE
 JV0024_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0024
 JV0024  HISTORY     - Date     Condition        Report By
 JV0024  HISTORY     - UNK      MONUMENTED       USGS
 JV0024  HISTORY     - 1955     GOOD             CGS
 JV0024  HISTORY     - 1971     GOOD             NGS
 JV0024  HISTORY     - 1979     GOOD             NGS
 JV0024  HISTORY     - 19901116 GOOD             USPSQD
 JV0024  HISTORY     - 20120308 GOOD             CCDES
 JV0024
 JV0024                          STATION DESCRIPTION
 JV0024
 JV0024'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0024'1 MI N FROM PERRYVLLE.
 JV0024'ABOUT 1.05 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV0024'STATION AT PERRYVILLE, UNDER THE EAST END OF THE BALTIMORE AND
 JV0024'OHIO RAILROAD BRIDGE OVER THE P.R.R. AND SUSQUEHANNA RIVER, AT
 JV0024'THE BOTTOM AND NEAR CENTER OF THE EAST STONE MASONRY FACE OF THE
 JV0024'SECOND PIER WEST OF THE EAST END OF OVERHEAD BRIDGE, A PROJECTING
 JV0024'POINT OF ROCK ABOUT 2 INCHES EAST AND BELOW THE LETTER M OF
 JV0024'CHISELED LETTERS BM, IN THE TOP EDGE OF THE BOTTOM LAYER OF
 JV0024'STONE, 14 1/2 FEET SOUTH OF NORTHEAST CORNER OF PIER, 6 FEET WEST
 JV0024'OF WEST RAIL OF WEST TRACK OF TWO YARD TRACKS, ABOUT 10 FEET
 JV0024'BELOW LEVEL OF MAIN TRACKS OF THE P.R.R., ABOUT LEVEL WITH
 JV0024'YARD TRACKS OF P.R.R.
 JV0024
 JV0024                          STATION RECOVERY (1971)
 JV0024
 JV0024'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0024'RECOVERED IN GOOD CONDITION.
 JV0024
 JV0024                          STATION RECOVERY (1979)
 JV0024
 JV0024'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0024'RECOVERED IN GOOD CONDITION.
 JV0024
 JV0024                          STATION RECOVERY (1990)
 JV0024
 JV0024'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0024'RECOVERED IN GOOD CONDITION.
 JV0024
 JV0024                          STATION RECOVERY (2012)
 JV0024
 JV0024'RECOVERY NOTE BY CECIL COUNTY DEPARTMENT OF 2012 (JEH)
 JV0024'1955 DESCRIPTION REFERENCE TO WEST RAIL OF WEST TRACK OF TWO YARD
 JV0024'TRACKS
 JV0024'NO LONGER VALID AS YARD TRACKS LONG AGO REMOVED WITH ONLY MAIN TRACKS
 JV0024'
 JV0024'REMAINING. LOCATED DIRECTLY ON EAST SIDE STONE MASONRY FACE OF SECOND
 JV0024'
 JV0024'PIER OF CSX (BALTIMORE AND OHIO) BRIDGE 14 1/2' SOUTH OF NORTHEAST
 JV0024'CORNER OF PILLAR AS OTHERWISE DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8033 ***********************************************************************
 AJ8033  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8033  DESIGNATION -  EA 27
 AJ8033  PID         -  AJ8033
 AJ8033  STATE/COUNTY-  MD/HARFORD
 AJ8033  COUNTRY     -  US
 AJ8033  USGS QUAD   -  EDGEWOOD (2016)
 AJ8033
 AJ8033                         *CURRENT SURVEY CONTROL
 AJ8033  ______________________________________________________________________
 AJ8033* NAD 83(2011) POSITION- 39 23 30.57146(N) 076 17 24.89344(W)   ADJUSTED
 AJ8033* NAD 83(2011) ELLIP HT-   -25.730 (meters)        (06/27/12)   ADJUSTED
 AJ8033* NAD 83(2011) EPOCH   -  2010.00
 AJ8033* NAVD 88 ORTHO HEIGHT -     7.4   (meters)       24.    (feet) GPS OBS
 AJ8033  ______________________________________________________________________
 AJ8033  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8033  GEOID HEIGHT    -        -33.157 (meters)                     GEOID99
 AJ8033  GEOID HEIGHT    -        -33.174 (meters)                     GEOID18
 AJ8033  NAD 83(2011) X  -  1,169,805.804 (meters)                     COMP
 AJ8033  NAD 83(2011) Y  - -4,795,189.183 (meters)                     COMP
 AJ8033  NAD 83(2011) Z  -  4,026,012.791 (meters)                     COMP
 AJ8033  LAPLACE CORR    -         -2.51  (seconds)                    DEFLEC18
 AJ8033
 AJ8033  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8033  Standards:
 AJ8033         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8033            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8033  -------------------------------------------------------------------
 AJ8033  NETWORK    0.50   0.90           0.22   0.19   0.46     -0.00862182
 AJ8033  -------------------------------------------------------------------
 AJ8033  Click here for local accuracies and other accuracy information.
 AJ8033
 AJ8033.The horizontal coordinates were established by GPS observations
 AJ8033.and adjusted by the National Geodetic Survey in June 2012.
 AJ8033
 AJ8033.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8033.been affixed to the stable North American tectonic plate. See 
 AJ8033.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8033
 AJ8033.The horizontal coordinates are valid at the epoch date displayed above
 AJ8033.which is a decimal equivalence of Year/Month/Day.
 AJ8033
 AJ8033.The orthometric height was determined by GPS observations and a
 AJ8033.high-resolution geoid model.
 AJ8033
 AJ8033.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8033.GEOID18 height accuracy estimate available here.
 AJ8033
 AJ8033.Click photographs - Photos may exist for this station.
 AJ8033
 AJ8033.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8033
 AJ8033.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8033
 AJ8033.The ellipsoidal height was determined by GPS observations
 AJ8033.and is referenced to NAD 83.
 AJ8033
 AJ8033. The following values were computed from the NAD 83(2011) position.
 AJ8033
 AJ8033;                    North         East     Units Scale Factor Converg.
 AJ8033;SPC MD       -   191,742.624   461,141.498   MT  0.99999034   +0 26 43.7
 AJ8033;SPC MD       -   629,075.59  1,512,928.40   sFT  0.99999034   +0 26 43.7
 AJ8033;UTM  18      - 4,361,053.334   388,892.122   MT  0.99975199   -0 49 08.0
 AJ8033
 AJ8033!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8033!SPC MD       -   1.00000404  x   0.99999034  =   0.99999438
 AJ8033!UTM  18      -   1.00000404  x   0.99975199  =   0.99975603
 AJ8033
 AJ8033_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8889261053(NAD 83)
 AJ8033
 AJ8033                          SUPERSEDED SURVEY CONTROL
 AJ8033
 AJ8033  NAD 83(2007)-  39 23 30.57170(N)    076 17 24.89421(W) AD(2002.00) 0
 AJ8033  ELLIP H (02/10/07)  -25.709  (m)                       GP(2002.00)    
 AJ8033  NAD 83(1991)-  39 23 30.57173(N)    076 17 24.89435(W) AD(       ) A
 AJ8033  ELLIP H (02/12/02)  -25.708  (m)                       GP(       ) 4 1
 AJ8033
 AJ8033.Superseded values are not recommended for survey control.
 AJ8033
 AJ8033.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8033.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8033
 AJ8033_MARKER: DD = SURVEY DISK
 AJ8033_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8033_STAMPING: EA 27 1963
 AJ8033_MARK LOGO: USACE
 AJ8033_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8033_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8033+STABILITY: SURFACE MOTION
 AJ8033_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8033+SATELLITE: SATELLITE OBSERVATIONS - 1945
 AJ8033
 AJ8033  HISTORY     - Date     Condition        Report By
 AJ8033  HISTORY     - 1945     MONUMENTED       USACE
 AJ8033
 AJ8033                          STATION DESCRIPTION
 AJ8033
 AJ8033'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1945 (USE)
 AJ8033'STATION IS LOCATED AT THE INTERSECTION OF RICKETTS POINT AND S
 AJ8033'KINGSCREEK ROADS JUST EAST OF WEIDE AIRFIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7364 ***********************************************************************
 HV7364  DESIGNATION -  EAGLE
 HV7364  PID         -  HV7364
 HV7364  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7364  COUNTRY     -  US
 HV7364  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7364
 HV7364                         *CURRENT SURVEY CONTROL
 HV7364  ______________________________________________________________________
 HV7364* NAD 83(1993) POSITION- 38 40 39.87344(N) 076 43 01.78865(W)   ADJUSTED
 HV7364* NAVD 88 ORTHO HEIGHT -    55.5   (meters)      182.    (feet) VERTCON3
 HV7364  ______________________________________________________________________
 HV7364  GEOID HEIGHT    -        -33.312 (meters)                     GEOID18
 HV7364  LAPLACE CORR    -         -4.31  (seconds)                    DEFLEC18
 HV7364  HORZ ORDER      -  FIRST
 HV7364
 HV7364.The horizontal coordinates were established by classical geodetic methods
 HV7364.and adjusted by the National Geodetic Survey in November 1994.
 HV7364
 HV7364.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7364.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7364
 HV7364.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7364.GEOID18 height accuracy estimate available here.
 HV7364
 HV7364.Click photographs - Photos may exist for this station.
 HV7364
 HV7364.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7364
 HV7364. The following values were computed from the NAD 83(1993) position.
 HV7364
 HV7364;                    North         East     Units Scale Factor Converg.
 HV7364;SPC MD       -   112,271.505   424,610.731   MT  0.99995579   +0 10 39.1
 HV7364;SPC MD       -   368,344.10  1,393,077.04   sFT  0.99995579   +0 10 39.1
 HV7364;UTM  18      - 4,282,415.368   350,630.730   MT  0.99987475   -1 04 24.0
 HV7364
 HV7364!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7364!SPC MD       -   0.99999652  x   0.99995579  =   0.99995231
 HV7364!UTM  18      -   0.99999652  x   0.99987475  =   0.99987127
 HV7364
 HV7364:                Primary Azimuth Mark                     Grid Az
 HV7364:SPC MD       -  EAGLE AZ MK                              255 00 29.3
 HV7364:UTM  18      -  EAGLE AZ MK                              256 15 32.4
 HV7364
 HV7364_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5063082415(NAD 83)
 HV7364
 HV7364|---------------------------------------------------------------------|
 HV7364| PID    Reference Object                     Distance      Geod. Az  |
 HV7364|                                                           dddmmss.s |
 HV7364| CX2728 EAGLE RM 1                           23.330 METERS 08814     |
 HV7364| HV7363 WESTWOOD ATT MICROWAVE              APPROX. 3.4 KM 1804851.5 |
 HV7364| CX2727 EAGLE AZ MK                                        2551108.4 |
 HV7364| HV7367 VORTAC NOTTINGHAM OTT               APPROX. 3.9 KM 3222745.4 |
 HV7364| CX2729 EAGLE RM 2                           23.894 METERS 33319     |
 HV7364|---------------------------------------------------------------------|
 HV7364
 HV7364                          SUPERSEDED SURVEY CONTROL
 HV7364
 HV7364  NAD 83(1991)-  38 40 39.87263(N)    076 43 01.78906(W) AD(       ) 1
 HV7364  NAD 83(1986)-  38 40 39.87072(N)    076 43 01.80433(W) AD(       ) 1
 HV7364  NAD 27      -  38 40 39.44748(N)    076 43 02.92401(W) AD(       ) 1
 HV7364  NGVD 29 (07/19/86)   55.8    (m)          183.     (f) VERT ANG       
 HV7364
 HV7364.Superseded values are not recommended for survey control.
 HV7364
 HV7364.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7364.See file dsdata.pdf to determine how the superseded data were derived.
 HV7364
 HV7364_MARKER: DS = TRIANGULATION STATION DISK
 HV7364_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7364_STAMPING: EAGLE 1970
 HV7364_MARK LOGO: CGS
 HV7364_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7364+STABILITY: SURFACE MOTION
 HV7364
 HV7364  HISTORY     - Date     Condition        Report By
 HV7364  HISTORY     - 1970     MONUMENTED       NGS
 HV7364
 HV7364                          STATION DESCRIPTION
 HV7364
 HV7364'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7364'THE STATION IS ABOUT 6 MILES NORTH OF AQUASCO, 3 MILES SOUTHEAST
 HV7364'OF NAYLOR, 1-1/2 MILES WEST OF THE PATUXENT RIVER, AT THE WEST
 HV7364'END OF A SHALLOW ABANDONED GRAVEL PIT, AND ON PROPERTY OWNED BY
 HV7364'FRANCIS R. RICHARDS.  PERMISSION WAS GRANTED BY MR. RICHARDS WHOSE
 HV7364'ADDRESS IS RURAL ROUTE 3, BOX 242, BRANDYWINE, MARYLAND.
 HV7364'
 HV7364'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV7364'STATE HIGHWAY 382, GO SOUTHEASTERLY ON STATE HIGHWAY 382 FOR 3.4
 HV7364'MILES TO A STORE ON THE RIGHT IN THE TOWN OF CROOM.  CONTINUE
 HV7364'SOUTHEASTERLY ON STATE HIGHWAY 382 FOR 3.8 MILES TO THE HOLLY
 HV7364'GROVE ELEMENTARY SCHOOL ON THE RIGHT IN THE TOWN OF NAYLOR.
 HV7364'CONTINUE SOUTHEASTERLY ON STATE HIGHWAY 382 FOR 0.45 MILE TO A
 HV7364'FORK.  TAKE THE LEFT FORK AND CONTINUE SOUTHEASTERLY ON STATE
 HV7364'HIGHWAY 382 FOR 2.45 MILES TO A SIDE ROAD LEFT, AIRPORT ROAD, AND
 HV7364'THE AZIMUTH MARK ON THE LEFT.  TURN LEFT AND GO NORTHEAST ON
 HV7364'AIRPORT ROAD FOR 0.3 MILE TO A DRIVEWAY TO A FARM HOUSE ON THE
 HV7364'RIGHT AND A FIELD ROAD ON THE RIGHT 100 FEET EAST OF THE DRIVEWAY.
 HV7364'TURN RIGHT AND GO SOUTHEAST ON THE FIELD ROAD FOR 0.05 MILE TO THE
 HV7364'TOP OF A LOW HILL AND THE STATION.
 HV7364'
 HV7364'THE STATION MARK IS A STANDARD DISK, STAMPED EAGLE 1970, SET IN
 HV7364'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7364'PROJECTS 2 INCHES ABOVE THE GROUND.  IT IS 27.5 FEET SOUTH OF THE
 HV7364'CENTERLINE OF A CURVE IN THE FIELD ROAD, 12.6 FEET EAST OF A
 HV7364'WITNESS POST, AND 10.0 FEET WEST OF THE WEST EDGE OF THE GRAVEL
 HV7364'PIT.  THE UNDERGROUND MARK IS 46 INCHES BELOW THE GROUND SURFACE.
 HV7364'
 HV7364'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED EAGLE NO 1 1970, SET
 HV7364'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7364'PROJECTS 6 INCHES ABOVE THE GROUND.  IT IS 89.2 FEET EAST OF THE
 HV7364'WITNESS POST, 36.0 FEET SOUTHEAST OF THE CENTERLINE OF THE FIELD
 HV7364'ROAD, 28.0 FEET SOUTHEAST OF THE NORTHERN EDGE OF THE GRAVEL PIT,
 HV7364'AND ABOUT 5 FEET LOWER IN ELEVATION THAN THE STATION.
 HV7364'
 HV7364'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED EAGLE NO 2 1970, SET
 HV7364'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7364'IS FLUSH WITH THE GROUND SURFACE.  IT IS 77.7 FEET NORTHWEST OF
 HV7364'THE WITNESS POST, 10.0 FEET WEST OF THE CENTERLINE OF THE FIELD
 HV7364'ROAD, AND ABOUT 4 FEET LOWER IN ELEVATION THAN THE STATION.
 HV7364'
 HV7364'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED EAGLE 1970, SET IN
 HV7364'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER THAT
 HV7364'PROJECTS 2 INCHES ABOVE THE GROUND.  IT IS 28.5 FEET NORTHWEST OF
 HV7364'THE CENTERLINE OF AIRPORT ROAD, 22.3 FEET NORTHEAST OF THE
 HV7364'CENTERLINE OF STATE HIGHWAY 382, 1.7 FEET EAST OF A POWER LINE
 HV7364'POLE AND 1.7 FEET SOUTH OF A WITNESS POST.
 HV7364'
 HV7364'THE DISTANCE BETWEEN REFERENCE MARKS COULD NOT BE MEASURED DUE TO
 HV7364'OBSTRUCTIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5109 ***********************************************************************
 JV5109  DESIGNATION -  EAGLE
 JV5109  PID         -  JV5109
 JV5109  STATE/COUNTY-  MD/KENT
 JV5109  COUNTRY     -  US
 JV5109  USGS QUAD   -  ROCK HALL (2016)
 JV5109
 JV5109                         *CURRENT SURVEY CONTROL
 JV5109  ______________________________________________________________________
 JV5109* NAD 83(1991) POSITION- 39 07 58.04556(N) 076 10 31.65046(W)   ADJUSTED
 JV5109* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5109  ______________________________________________________________________
 JV5109  GEOID HEIGHT    -        -33.433 (meters)                     GEOID18
 JV5109  LAPLACE CORR    -         -2.07  (seconds)                    DEFLEC18
 JV5109  HORZ ORDER      -  THIRD
 JV5109
 JV5109.The horizontal coordinates were established by classical geodetic methods
 JV5109.and adjusted by the National Geodetic Survey in January 1992.
 JV5109
 JV5109.The orthometric height was scaled from a topographic map.
 JV5109
 JV5109.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5109.GEOID18 height accuracy estimate available here.
 JV5109
 JV5109.Click photographs - Photos may exist for this station.
 JV5109
 JV5109.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5109
 JV5109. The following values were computed from the NAD 83(1991) position.
 JV5109
 JV5109;                    North         East     Units Scale Factor Converg.
 JV5109;SPC MD       -   163,069.470   471,289.537   MT  0.99995988   +0 31 03.0
 JV5109;SPC MD       -   535,003.75  1,546,222.42   sFT  0.99995988   +0 31 03.0
 JV5109;UTM  18      - 4,332,170.422   398,404.052   MT  0.99972709   -0 44 30.9
 JV5109
 JV5109!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5109!SPC MD       -   1.00000513  x   0.99995988  =   0.99996501
 JV5109!UTM  18      -   1.00000513  x   0.99972709  =   0.99973222
 JV5109
 JV5109:                Primary Azimuth Mark                     Grid Az
 JV5109:SPC MD       -  FORD                                     302 21 39.4
 JV5109:UTM  18      -  FORD                                     303 37 13.3
 JV5109
 JV5109_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9840432170(NAD 83)
 JV5109
 JV5109|---------------------------------------------------------------------|
 JV5109| PID    Reference Object                     Distance      Geod. Az  |
 JV5109|                                                           dddmmss.s |
 JV5109| JV5110 WEST                                489.783 METERS 0284711.6 |
 JV5109| JV5104 HORNOR                              482.540 METERS 0840927.6 |
 JV5109| JV5113 FORD                                APPROX. 0.5 KM 3025242.4 |
 JV5109|---------------------------------------------------------------------|
 JV5109
 JV5109                          SUPERSEDED SURVEY CONTROL
 JV5109
 JV5109  NAD 83(1986)-  39 07 58.04004(N)    076 10 31.66199(W) AD(       ) 3
 JV5109  NAD 27      -  39 07 57.64300(N)    076 10 32.83300(W) AD(       ) 3
 JV5109  USSD        -  39 07 58.04600(N)    076 10 32.65900(W) AD(       ) 3
 JV5109
 JV5109.Superseded values are not recommended for survey control.
 JV5109
 JV5109.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5109.See file dsdata.pdf to determine how the superseded data were derived.
 JV5109
 JV5109_MARKER: H = DRILL HOLE
 JV5109_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5109_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5109+STABILITY: SURFACE MOTION
 JV5109
 JV5109  HISTORY     - Date     Condition        Report By
 JV5109  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5109  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5109
 JV5109                          STATION DESCRIPTION
 JV5109
 JV5109'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5109'STATION IS ON THE WESTERN SHORE OF WEST FORK OF LANGFORD CREEK, ON
 JV5109'EAGLE POINT, AT S SIDE OF ENTRANCE TO GRAVEYARD COVE, ABOUT 3/4
 JV5109'MILE NW OF MAIN BODY OF LANGFORD CREEK, ON A PROMINENT BLUFF ABOUT
 JV5109'20 FEET ABOVE HIGH WATER, 26 YARDS W OF EXTREME END OF POINT, 11
 JV5109'YARDS S OF TOP OF BANK, 8 YARDS N OF TOP OF BANK, AND 2 YARDS N
 JV5109'OF SMALL CEDAR TREE.
 JV5109'
 JV5109'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5109'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5109'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5109'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5109'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV5109'INCHES BELOW THE BASE OF THE MONUMENT.
 JV5109'
 JV5109'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5109'FOLLOWS--N CHIMNEY OF HOUSE, 1 MILE, S 35 DEG 58 MIN W.  12-INCH LONE
 JV5109'OAK TREE, 1/4 MILE, S 57 DEG 38 MIN W.  NAIL IN BLAZE IN 15-INCH
 JV5109'STUMP, 4.54 METERS (14.89 FEET), N 73 DEG 45 MIN W. E CHIMNEY OF
 JV5109'DE FORDS HOUSE, 3/8 MILE, N 59 DEG 07 MIN W. S CHIMNEY OF HOUSE
 JV5109'3/4 MILE, N 51 DEG 12 MIN W. LONE CEDAR TREE, 5/8 MILE, N 07 DEG 07
 JV5109'MIN W.  CHIMNEY OF SMALL HOUSE, 1-1/2 MILES, N 04 DEG 58 MIN E.
 JV5109'LEFT TANGENT OF CACAWAY ISLAND, 3/4 MILE, S 53 DEG 44 MIN E. NAIL
 JV5109'IN BLAZE IN STUMP NEAR TOP OF BANK, 9.96 METERS (32.68 FEET), S 09
 JV5109'DEG 58 MIN E.
 JV5109
 JV5109                          STATION RECOVERY (1941)
 JV5109
 JV5109'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5109'SEARCHED FOR BUT NOT FOUND.  STATION WAS LOCATED ON BANK IN
 JV5109'FIELD.  MEASUREMENTS WERE TAKEN FROM TOP OF BANK AND SUBSURFACE
 JV5109'MARK WAS DUG FOR BUT NOT FOUND.  BELIEVE PLOWED OUT.  RECOMMEND
 JV5109'IT BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6292 ***********************************************************************
 JV6292  DESIGNATION -  EAGLE
 JV6292  PID         -  JV6292
 JV6292  STATE/COUNTY-  MD/HARFORD
 JV6292  COUNTRY     -  US
 JV6292  USGS QUAD   -  ABERDEEN (2016)
 JV6292
 JV6292                         *CURRENT SURVEY CONTROL
 JV6292  ______________________________________________________________________
 JV6292* NAD 83(2011) POSITION- 39 31 00.35204(N) 076 10 20.21387(W)   ADJUSTED
 JV6292* NAD 83(2011) ELLIP HT-     9.844 (meters)        (06/27/12)   ADJUSTED
 JV6292* NAD 83(2011) EPOCH   -  2010.00
 JV6292* NAVD 88 ORTHO HEIGHT -    42.975 (meters)      140.99  (feet) ADJUSTED
 JV6292  ______________________________________________________________________
 JV6292  GEOID HEIGHT    -        -33.086 (meters)                     GEOID18
 JV6292  NAD 83(2011) X  -  1,177,575.990 (meters)                     COMP
 JV6292  NAD 83(2011) Y  - -4,784,237.985 (meters)                     COMP
 JV6292  NAD 83(2011) Z  -  4,036,745.817 (meters)                     COMP
 JV6292  LAPLACE CORR    -         -2.82  (seconds)                    DEFLEC18
 JV6292  DYNAMIC HEIGHT  -         42.953 (meters)      140.92  (feet) COMP
 JV6292  MODELED GRAVITY -    980,126.3   (mgal)                       NAVD 88
 JV6292
 JV6292  VERT ORDER      -  FIRST     CLASS II
 JV6292
 JV6292  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6292  Standards:
 JV6292         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6292            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6292  -------------------------------------------------------------------
 JV6292  NETWORK    2.05   5.86           0.83   0.79   2.99      0.46806242
 JV6292  -------------------------------------------------------------------
 JV6292  Click here for local accuracies and other accuracy information.
 JV6292
 JV6292.The horizontal coordinates were established by GPS observations
 JV6292.and adjusted by the National Geodetic Survey in June 2012.
 JV6292
 JV6292.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6292.been affixed to the stable North American tectonic plate. See 
 JV6292.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6292
 JV6292.The horizontal coordinates are valid at the epoch date displayed above
 JV6292.which is a decimal equivalence of Year/Month/Day.
 JV6292
 JV6292.The orthometric height was determined by differential leveling and
 JV6292.adjusted by the NATIONAL GEODETIC SURVEY
 JV6292.in June 1991.
 JV6292
 JV6292.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6292.GEOID18 height accuracy estimate available here.
 JV6292
 JV6292.Click photographs - Photos may exist for this station.
 JV6292
 JV6292.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6292
 JV6292.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6292
 JV6292.The ellipsoidal height was determined by GPS observations
 JV6292.and is referenced to NAD 83.
 JV6292
 JV6292.The dynamic height is computed by dividing the NAVD 88
 JV6292.geopotential number by the normal gravity value computed on the
 JV6292.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6292.degrees latitude (g = 980.6199 gals.).
 JV6292
 JV6292.The modeled gravity was interpolated from observed gravity values.
 JV6292
 JV6292. The following values were computed from the NAD 83(2011) position.
 JV6292
 JV6292;                    North         East     Units Scale Factor Converg.
 JV6292;SPC MD       -   205,698.896   471,177.685   MT  1.00001236   +0 31 10.2
 JV6292;SPC MD       -   674,863.79  1,545,855.45   sFT  1.00001236   +0 31 10.2
 JV6292;UTM  18      - 4,374,781.040   399,231.246   MT  0.99972502   -0 44 45.6
 JV6292
 JV6292!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6292!SPC MD       -   0.99999846  x   1.00001236  =   1.00001082
 JV6292!UTM  18      -   0.99999846  x   0.99972502  =   0.99972348
 JV6292
 JV6292_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9923174781(NAD 83)
 JV6292
 JV6292|---------------------------------------------------------------------|
 JV6292| PID    Reference Object                     Distance      Geod. Az  |
 JV6292|                                                           dddmmss.s |
 JV6292| JV6326 EAGLE AZ MK                         233.791 METERS 20955     |
 JV6292|---------------------------------------------------------------------|
 JV6292
 JV6292                          SUPERSEDED SURVEY CONTROL
 JV6292
 JV6292  NAD 83(2007)-  39 31 00.35206(N)    076 10 20.21472(W) AD(2002.00) 0
 JV6292  ELLIP H (02/10/07)    9.857  (m)                       GP(2002.00)    
 JV6292  ELLIP H (09/18/02)    9.886  (m)                       GP(       ) 4 2
 JV6292  NAD 83(1991)-  39 31 00.35158(N)    076 10 20.21542(W) AD(       ) 1
 JV6292  ELLIP H (01/27/92)    9.860  (m)                       GP(       ) 4 1
 JV6292  NAD 83(1986)-  39 31 00.34549(N)    076 10 20.22130(W) AD(       ) 1
 JV6292  NGVD 29              43.21   (m)          141.8    (f) LEVELING    3  
 JV6292
 JV6292.Superseded values are not recommended for survey control.
 JV6292
 JV6292.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6292.See file dsdata.pdf to determine how the superseded data were derived.
 JV6292
 JV6292_MARKER: DD = SURVEY DISK
 JV6292_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6292_STAMPING: 53 EAGLE 1989
 JV6292_MARK LOGO: MD-025
 JV6292_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6292_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6292+STABILITY: SURFACE MOTION
 JV6292_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6292+SATELLITE: SATELLITE OBSERVATIONS - January 23, 2009
 JV6292
 JV6292  HISTORY     - Date     Condition        Report By
 JV6292  HISTORY     - 1989     MONUMENTED       RDA
 JV6292  HISTORY     - 19991226 GOOD             USPSQD
 JV6292  HISTORY     - 20090123 GOOD             JMTMD
 JV6292
 JV6292                          STATION DESCRIPTION
 JV6292
 JV6292'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6292'THE STATION IS LOCATED IN SOUTHEASTERN HARFORD COUNTY, MARYLAND IN
 JV6292'THE VILLAGE OF ABERDEEN IN FRONT OF ABERDEEN HIGH SCHOOL.  TO REACH
 JV6292'THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE
 JV6292'HIGHWAY 22 IN ABERDEEN PROCEED NORTHWEST ALONG HIGHWAY 22 0.8 MILES
 JV6292'TO ITS INTERSECTION WITH STATE HIGHWAY 462, PARADISE ROAD.  TURN LEFT
 JV6292'AND PROCEED SOUTH ALONG HIGHWAY 462, PARADISE ROAD 0.4 MILES TO
 JV6292'ABERDEEN HIGH SCHOOL AND THE STATION ON THE LEFT.  THE STATION IS A
 JV6292'STANDARD HARFORD COUNTY STATION DISC SET IN CONCRETE ABOUT 1 INCH
 JV6292'BELOW GROUND STAMPED 53 EAGLE 1989.  THE STATION IS 13.8 FEET EAST OF
 JV6292'THE FACE OF THE CURB OF THE NORTH BOUND LANES OF PARADISE ROAD, 17.6
 JV6292'FEET SOUTHWEST OF A UTILITY POLE WITH A STREET LIGHT, AND 61 FEET
 JV6292'WEST OF A 9 INCH DOGWOOD TREE.
 JV6292
 JV6292                          STATION RECOVERY (1999)
 JV6292
 JV6292'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6292'RECOVERED IN GOOD CONDITION.
 JV6292
 JV6292                          STATION RECOVERY (2009)
 JV6292
 JV6292'RECOVERY NOTE BY JMT ENGINEERING 2009 (CJH)
 JV6292'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6326 ***********************************************************************
 JV6326  DESIGNATION -  EAGLE AZ MK
 JV6326  PID         -  JV6326
 JV6326  STATE/COUNTY-  MD/HARFORD
 JV6326  COUNTRY     -  US
 JV6326  USGS QUAD   -  ABERDEEN (2016)
 JV6326
 JV6326                         *CURRENT SURVEY CONTROL
 JV6326  ______________________________________________________________________
 JV6326* NAD 83(2011) POSITION- 39 30 53.78134(N) 076 10 25.09492(W)   ADJUSTED
 JV6326* NAD 83(2011) ELLIP HT-     1.516 (meters)        (06/27/12)   ADJUSTED
 JV6326* NAD 83(2011) EPOCH   -  2010.00
 JV6326* NAVD 88 ORTHO HEIGHT -    34.628 (meters)      113.61  (feet) ADJUSTED
 JV6326  ______________________________________________________________________
 JV6326  GEOID HEIGHT    -        -33.089 (meters)                     GEOID18
 JV6326  NAD 83(2011) X  -  1,177,492.054 (meters)                     COMP
 JV6326  NAD 83(2011) Y  - -4,784,384.815 (meters)                     COMP
 JV6326  NAD 83(2011) Z  -  4,036,584.189 (meters)                     COMP
 JV6326  LAPLACE CORR    -         -2.80  (seconds)                    DEFLEC18
 JV6326  DYNAMIC HEIGHT  -         34.611 (meters)      113.55  (feet) COMP
 JV6326  MODELED GRAVITY -    980,126.0   (mgal)                       NAVD 88
 JV6326
 JV6326  VERT ORDER      -  FIRST     CLASS II
 JV6326
 JV6326  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6326  Standards:
 JV6326         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6326            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6326  -------------------------------------------------------------------
 JV6326  NETWORK    2.09   5.98           0.84   0.82   3.05      0.43371219
 JV6326  -------------------------------------------------------------------
 JV6326  Click here for local accuracies and other accuracy information.
 JV6326
 JV6326.The horizontal coordinates were established by GPS observations
 JV6326.and adjusted by the National Geodetic Survey in June 2012.
 JV6326
 JV6326.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6326.been affixed to the stable North American tectonic plate. See 
 JV6326.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6326
 JV6326.The horizontal coordinates are valid at the epoch date displayed above
 JV6326.which is a decimal equivalence of Year/Month/Day.
 JV6326
 JV6326.The orthometric height was determined by differential leveling and
 JV6326.adjusted by the NATIONAL GEODETIC SURVEY
 JV6326.in June 1991.
 JV6326
 JV6326.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6326.GEOID18 height accuracy estimate available here.
 JV6326
 JV6326.Click photographs - Photos may exist for this station.
 JV6326
 JV6326.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6326
 JV6326.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6326
 JV6326.The ellipsoidal height was determined by GPS observations
 JV6326.and is referenced to NAD 83.
 JV6326
 JV6326.The dynamic height is computed by dividing the NAVD 88
 JV6326.geopotential number by the normal gravity value computed on the
 JV6326.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6326.degrees latitude (g = 980.6199 gals.).
 JV6326
 JV6326.The modeled gravity was interpolated from observed gravity values.
 JV6326
 JV6326. The following values were computed from the NAD 83(2011) position.
 JV6326
 JV6326;                    North         East     Units Scale Factor Converg.
 JV6326;SPC MD       -   205,495.203   471,062.930   MT  1.00001201   +0 31 07.2
 JV6326;SPC MD       -   674,195.51  1,545,478.96   sFT  1.00001201   +0 31 07.2
 JV6326;UTM  18      - 4,374,579.988   399,112.054   MT  0.99972532   -0 44 48.6
 JV6326
 JV6326!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6326!SPC MD       -   0.99999976  x   1.00001201  =   1.00001177
 JV6326!UTM  18      -   0.99999976  x   0.99972532  =   0.99972508
 JV6326
 JV6326_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9911274579(NAD 83)
 JV6326
 JV6326|---------------------------------------------------------------------|
 JV6326| PID    Reference Object                     Distance      Geod. Az  |
 JV6326|                                                           dddmmss.s |
 JV6326| JV6292 EAGLE                               233.791 METERS 02955     |
 JV6326|---------------------------------------------------------------------|
 JV6326
 JV6326                          SUPERSEDED SURVEY CONTROL
 JV6326
 JV6326  NAD 83(2007)-  39 30 53.78135(N)    076 10 25.09576(W) AD(2002.00) 0
 JV6326  ELLIP H (02/10/07)    1.528  (m)                       GP(2002.00)    
 JV6326  ELLIP H (09/18/02)    1.543  (m)                       GP(       ) 4 2
 JV6326  NAD 83(1991)-  39 30 53.78072(N)    076 10 25.09575(W) AD(       ) 1
 JV6326  ELLIP H (01/27/92)    1.517  (m)                       GP(       ) 4 1
 JV6326  NAD 83(1986)-  39 30 53.77464(N)    076 10 25.10163(W) AD(       ) 1
 JV6326  NGVD 29              34.86   (m)          114.4    (f) LEVELING    3  
 JV6326
 JV6326.Superseded values are not recommended for survey control.
 JV6326
 JV6326.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6326.See file dsdata.pdf to determine how the superseded data were derived.
 JV6326
 JV6326_MARKER: DZ = AZIMUTH MARK DISK
 JV6326_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6326_STAMPING: 53 EAGLE 1989
 JV6326_MARK LOGO: MD-025
 JV6326_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6326_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6326+STABILITY: SURFACE MOTION
 JV6326_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6326+SATELLITE: SATELLITE OBSERVATIONS - April 21, 2001
 JV6326
 JV6326  HISTORY     - Date     Condition        Report By
 JV6326  HISTORY     - 1989     MONUMENTED       RDA
 JV6326  HISTORY     - 19900103 GOOD
 JV6326  HISTORY     - 20010421 GOOD             USPSQD
 JV6326
 JV6326                          STATION DESCRIPTION
 JV6326
 JV6326'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6326'THE STATION IS LOCATED IN SOUTHEASTERN HARFORD COUNTY, MARYLAND IN
 JV6326'THE VILLAGE OF ABERDEEN IN FRONT OF ABERDEEN HIGH SCHOOL.  TO REACH
 JV6326'THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE
 JV6326'HIGHWAY 22 IN ABERDEEN PROCEED NORTHWEST ALONG HIGHWAY 22 0.8 MILES
 JV6326'TO ITS INTERSECTION WITH STATE HIGHWAY 462, PARADISE ROAD.  TURN LEFT
 JV6326'AND PROCEED SOUTH ALONG HIGHWAY 462, PARADISE ROAD 0.4 MILES TO
 JV6326'ABERDEEN HIGH SCHOOL AND THE STATION ON THE LEFT.  TO REACH THE
 JV6326'AZIMUTH MARK FROM THE STATION PROCEED SOUTH ALONG PARADISE ROAD,
 JV6326'HIGHWAY 462 0.15 MILES TO AZIMUTH MARK ON THE LEFT.  THE MARK IS A
 JV6326'STANDARD HARFORD COUNTY AZIMUTH DISC SET IN CONCRETE ABOUT 1 INCH
 JV6326'BELOW GROUND STAMPED 53 EAGLE 1989.  THE MARK IS 32 FEET SOUTHWEST OF
 JV6326'C AND P MARYLAND POLE NUMBER 5, 17 FEET SOUTHEAST OF THE END OF
 JV6326'WINGWALL FOR THE BRIDGE ON THE SOUTHEAST ABUTMENT, AND 20 FEET
 JV6326'SOUTHEAST OF THE FACE OF CURB OF THE NORTH BOUND LANE OF PARADISE
 JV6326'ROAD.
 JV6326
 JV6326                          STATION RECOVERY (1990)
 JV6326
 JV6326'RECOVERED 1990
 JV6326'RECOVERED IN GOOD CONDITION.
 JV6326
 JV6326                          STATION RECOVERY (2001)
 JV6326
 JV6326'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV6326'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1956 ***********************************************************************
 HU1956  DESIGNATION -  EAR 1910
 HU1956  PID         -  HU1956
 HU1956  STATE/COUNTY-  MD/DORCHESTER
 HU1956  COUNTRY     -  US
 HU1956  USGS QUAD   -  NANTICOKE (2016)
 HU1956
 HU1956                         *CURRENT SURVEY CONTROL
 HU1956  ______________________________________________________________________
 HU1956* NAD 83(1991) POSITION- 38 17 26.93318(N) 075 59 53.50262(W)   ADJUSTED
 HU1956* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1956  ______________________________________________________________________
 HU1956  GEOID HEIGHT    -        -35.539 (meters)                     GEOID18
 HU1956  LAPLACE CORR    -         -2.45  (seconds)                    DEFLEC18
 HU1956  HORZ ORDER      -  THIRD
 HU1956
 HU1956.The horizontal coordinates were established by classical geodetic methods
 HU1956.and adjusted by the National Geodetic Survey in January 1992.
 HU1956
 HU1956.The orthometric height was scaled from a topographic map.
 HU1956
 HU1956.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1956.GEOID18 height accuracy estimate available here.
 HU1956
 HU1956.Click photographs - Photos may exist for this station.
 HU1956
 HU1956.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1956
 HU1956. The following values were computed from the NAD 83(1991) position.
 HU1956
 HU1956;                    North         East     Units Scale Factor Converg.
 HU1956;SPC MD       -    69,764.167   487,640.751   MT  1.00000161   +0 37 43.6
 HU1956;SPC MD       -   228,884.60  1,599,868.03   sFT  1.00000161   +0 37 43.6
 HU1956;UTM  18      - 4,238,553.533   412,707.315   MT  0.99969384   -0 37 06.9
 HU1956
 HU1956!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1956!SPC MD       -   1.00000561  x   1.00000161  =   1.00000722
 HU1956!UTM  18      -   1.00000561  x   0.99969384  =   0.99969945
 HU1956
 HU1956:                Primary Azimuth Mark                     Grid Az
 HU1956:SPC MD       -  FISH 1910                                155 38 08.4
 HU1956:UTM  18      -  FISH 1910                                156 52 58.9
 HU1956
 HU1956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1270738553(NAD 83)
 HU1956
 HU1956|---------------------------------------------------------------------|
 HU1956| PID    Reference Object                     Distance      Geod. Az  |
 HU1956|                                                           dddmmss.s |
 HU1956| HU1958 FISH 1910                           APPROX. 3.1 KM 1561552.0 |
 HU1956| HV6411 TODDVILLE METHODIST CH SPIRE        APPROX. 6.2 KM 2762319.4 |
 HU1956|---------------------------------------------------------------------|
 HU1956
 HU1956                          SUPERSEDED SURVEY CONTROL
 HU1956
 HU1956  NAD 83(1986)-  38 17 26.93201(N)    075 59 53.52190(W) AD(       ) 3
 HU1956  NAD 27      -  38 17 26.49400(N)    075 59 54.75700(W) AD(       ) 3
 HU1956  USSD        -  38 17 26.88500(N)    075 59 54.51900(W) AD(       ) 3
 HU1956
 HU1956.Superseded values are not recommended for survey control.
 HU1956
 HU1956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1956.See file dsdata.pdf to determine how the superseded data were derived.
 HU1956
 HU1956_MARKER: H = DRILL HOLE
 HU1956_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1956_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1956+STABILITY: SURFACE MOTION
 HU1956
 HU1956  HISTORY     - Date     Condition        Report By
 HU1956  HISTORY     - 1910     MONUMENTED       MDSFC
 HU1956  HISTORY     - 1931     MARK NOT FOUND   CGS
 HU1956
 HU1956                          STATION DESCRIPTION
 HU1956
 HU1956'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HU1956'STATION IS ON THE EASTERN SHORE OF FISHING BAY, ABOUT 6-1/8
 HU1956'MILES N OF SHARKFIN SHOAL LIGHT, 1-3/4 MILES E-NE OF ROASTING
 HU1956'EAR POINT, AND 1-3/4 MILES SE OF FISHING POINT, ON ELLIOTT
 HU1956'ISLAND, ON MARSH LAND ABOUT 1 FOOT ABOVE HIGH WATER, 20 YARDS
 HU1956'NE OF SHORE, 30 YARDS N BY W OF SHORE, AND 40 YARDS E BY S OF
 HU1956'SHORE.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HU1956'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HU1956'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HU1956'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HU1956'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF
 HU1956'A 2-INCH DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW THE
 HU1956'BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HU1956'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY IN MIDDLE
 HU1956'OF LARGE BUILDING, 5 MILES, S 40 DEG 32 MIN W.  NEAR PEAK OF
 HU1956'BARN, 2-1/2 MILES, S 64 DEG 33 MIN W.  STACK OF CANNING
 HU1956'HOUSE AT ELLIOTT ISLAND, 1-1/2 MILES, N 39 DEG 50 MIN W.
 HU1956'CHIMNEY ON RIGHT END OF HOUSE, 1-1/4 MILES, N 34 DEG 27 MIN W.
 HU1956'NEAR PEAK OF HOUSE, 1-1/4 MILES, N 21 DEG 46 MIN W.  LEFT
 HU1956'PEAK OF BARN, 1-1/4 MILES, N 11 DEG 56 MIN E.
 HU1956
 HU1956                          STATION RECOVERY (1931)
 HU1956
 HU1956'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1931 (EHB)
 HU1956'STATION WAS NOT LOCATED AFTER A THOROUGH SEARCH.  THERE ARE NO
 HU1956'DISTINGUISHING POINTS ALONG THE SHORE IN THE VICINITY OF THE
 HU1956'STATION, AND THE SEARCH WAS CARRIED ON WITH THE AID OF THE
 HU1956'AZIMUTH MARKS ALONE.  THE GROUND WAS COVERED WITH A DENSE GROWTH
 HU1956'OF WATER BUSHES AND MATTED MARSH GRASS WHICH MADE THE LIKELIHOOD
 HU1956'OF FINDING THE MARK, WITH THE GIVEN DESCRIPTION, DOUBTFUL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0145 ***********************************************************************
 JV0145  DESIGNATION -  EARL
 JV0145  PID         -  JV0145
 JV0145  STATE/COUNTY-  MD/HARFORD
 JV0145  COUNTRY     -  US
 JV0145  USGS QUAD   -  ABERDEEN (2016)
 JV0145
 JV0145                         *CURRENT SURVEY CONTROL
 JV0145  ______________________________________________________________________
 JV0145* NAD 83(1991) POSITION- 39 34 13.69435(N) 076 07 53.61669(W)   ADJUSTED
 JV0145* NAVD 88 ORTHO HEIGHT -   134.446 (meters)      441.09  (feet) ADJUSTED
 JV0145  ______________________________________________________________________
 JV0145  GEOID HEIGHT    -        -33.031 (meters)                     GEOID18
 JV0145  LAPLACE CORR    -         -3.52  (seconds)                    DEFLEC18
 JV0145  DYNAMIC HEIGHT  -        134.380 (meters)      440.88  (feet) COMP
 JV0145  MODELED GRAVITY -    980,132.0   (mgal)                       NAVD 88
 JV0145
 JV0145  HORZ ORDER      -  SECOND
 JV0145  VERT ORDER      -  SECOND    CLASS 0
 JV0145
 JV0145.The horizontal coordinates were established by classical geodetic methods
 JV0145.and adjusted by the National Geodetic Survey in January 1992.
 JV0145
 JV0145.The orthometric height was determined by differential leveling and
 JV0145.adjusted by the NATIONAL GEODETIC SURVEY
 JV0145.in June 1991.
 JV0145
 JV0145.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0145.GEOID18 height accuracy estimate available here.
 JV0145
 JV0145.Click photographs - Photos may exist for this station.
 JV0145
 JV0145.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0145
 JV0145.The dynamic height is computed by dividing the NAVD 88
 JV0145.geopotential number by the normal gravity value computed on the
 JV0145.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0145.degrees latitude (g = 980.6199 gals.).
 JV0145
 JV0145.The modeled gravity was interpolated from observed gravity values.
 JV0145
 JV0145. The following values were computed from the NAD 83(1991) position.
 JV0145
 JV0145;                    North         East     Units Scale Factor Converg.
 JV0145;SPC MD       -   211,694.041   474,622.601   MT  1.00002330   +0 32 42.2
 JV0145;SPC MD       -   694,532.87  1,557,157.65   sFT  1.00002330   +0 32 42.2
 JV0145;UTM  18      - 4,380,696.868   402,806.687   MT  0.99971630   -0 43 15.2
 JV0145
 JV0145!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0145!SPC MD       -   0.99998409  x   1.00002330  =   1.00000739
 JV0145!UTM  18      -   0.99998409  x   0.99971630  =   0.99970039
 JV0145
 JV0145:                Primary Azimuth Mark                     Grid Az
 JV0145:SPC MD       -  EARL AZ MK                               041 37 01.8
 JV0145:UTM  18      -  EARL AZ MK                               042 52 59.2
 JV0145
 JV0145_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0280680696(NAD 83)
 JV0145
 JV0145|---------------------------------------------------------------------|
 JV0145| PID    Reference Object                     Distance      Geod. Az  |
 JV0145|                                                           dddmmss.s |
 JV0145| JV4784 BAINBRIDGE NAVAL STA N TANK         APPROX. 6.5 KM 0334401.2 |
 JV0145| CA9376 EARL AZ MK                                         0420944.0 |
 JV0145| JV4786 BAINBRIDGE NAVAL STA S TANK         APPROX. 6.5 KM 0460524.4 |
 JV0145| JV0143 EARL RM 1                            19.820 METERS 10239     |
 JV0145| JV0144 EARL RM 2                            30.125 METERS 16647     |
 JV0145|---------------------------------------------------------------------|
 JV0145
 JV0145                          SUPERSEDED SURVEY CONTROL
 JV0145
 JV0145  NAD 83(1986)-  39 34 13.68788(N)    076 07 53.62220(W) AD(       ) 2
 JV0145  NAD 27      -  39 34 13.29870(N)    076 07 54.79930(W) AD(       ) 2
 JV0145  NGVD 29             134.75   (m)          442.1    (f) LEVELING    3  
 JV0145  NGVD 29 (11/26/84)  134.715  (m)          441.98   (f) ADJUSTED    2 0
 JV0145
 JV0145.Superseded values are not recommended for survey control.
 JV0145
 JV0145.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0145.See file dsdata.pdf to determine how the superseded data were derived.
 JV0145
 JV0145_MARKER: DS = TRIANGULATION STATION DISK
 JV0145_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0145_STAMPING: EARL 1958
 JV0145_MARK LOGO: CGS
 JV0145_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0145+STABILITY: SURFACE MOTION
 JV0145
 JV0145  HISTORY     - Date     Condition        Report By
 JV0145  HISTORY     - 1958     MONUMENTED       CGS
 JV0145  HISTORY     - 1959     GOOD             CGS
 JV0145  HISTORY     - 1965     SEE DESCRIPTION  CGS
 JV0145
 JV0145                          STATION DESCRIPTION
 JV0145
 JV0145'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0145'THE STATION IS LOCATED ABOUT 4-1/2 MILES NORTHEAST OF ABERDEEN
 JV0145'AND ABOUT 2 MILES NORTHWEST OF HAVRE DE GRACE.  IT IS 30 FEET
 JV0145'NORTH OF THE NORTHEAST CORNER OF OLD CORN CRIB, 27 FEET
 JV0145'SOUTH-SOUTHWEST OF GATE AND FENCE CORNER.  THE MARK IS A STANDARD
 JV0145'TRIANGULATION STATION MARK DISK SET IN A 12X12 INCH CONCRETE
 JV0145'POST, THE MARK IS SET FLUSH AND THE DISK IS STAMPED EARL 1958.
 JV0145'
 JV0145'R.M. NO. 1 IS 23-1/2 FEET EAST OF THE NORTHEAST CORNER OF OLD
 JV0145'CORN CRIB AND 1-1/2 FEET SOUTH OF BOARD FENCE.  THE MARK IS A
 JV0145'STANDARD REFERENCE MARK DISK SET IN A 12X12 INCH CONCRETE POST,
 JV0145'THE MARK IS SET FLUSH AND THE DISK IS STAMPED EARL NO 1 1958.
 JV0145'
 JV0145'R.M. NO. 2 IS 49 FEET NORTH OF THE SOUTHWEST CORNER OF BARN,
 JV0145'63-1/2 FEET NORTHEAST OF UTILITY POLE, 45 FEET SOUTHWEST OF THE
 JV0145'NORTHWEST CORNER OF BARN AND 26 FEET SOUTHEAST OF THE CENTER OF
 JV0145'DRIVEWAY.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN A
 JV0145'12X12 INCH CONCRETE POST, THE MARK IS SET FLUSH AND THE DISK IS
 JV0145'STAMPED EARL NO 2 1958.
 JV0145'
 JV0145'AZIMUTH MARK IS 16 FEET EAST OF CENTER OF ROAD AND 1-1/2 FEET
 JV0145'SOUTH OF WITNESS POST.  THE MARK IS A STANDARD AZIMUTH MARK DISK
 JV0145'SET IN A 12X12 INCH CONCRETE POST, THE MARK IS SET FLUSH AND THE
 JV0145'DISK IS STAMPED EARL 1958.
 JV0145'
 JV0145'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV0145'STATE HIGHWAYS 7 AND 155 IN HAVRE DE GRACE.  GO NORTH ON STATE
 JV0145'HIGHWAY 155 FOR 0.2 MILE TO A REVERSE Y, KEEP LEFT AND CONTINUE
 JV0145'ON STATE HIGHWAY 155 FOR 1.85 MILES TO DRIVE WAY ON RIGHT, TURN
 JV0145'RIGHT AND GO NORTH FOR 0.1 MILE TO THE STATION BEHIND OLD CORN
 JV0145'CRIB AS DESCRIBED.
 JV0145'
 JV0145'TO REACH THE AZIMUTH MARK FROM THE STATION, GO EAST FOR ABOUT
 JV0145'200 FEET TO TRACK ROAD LEFT, TURN LEFT AND GO NORTHERLY FOR 0.1
 JV0145'MILE TO HARD SURFACED ROAD, TURN LEFT AND GO NORTHWEST ON HARD
 JV0145'SURFACED ROAD FOR 0.15 MILE TO THE AZIMUTH MARK ON RIGHT AS
 JV0145'DESCRIBED.
 JV0145'
 JV0145'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV0145
 JV0145                          STATION RECOVERY (1959)
 JV0145
 JV0145'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV0145'2.2 MI NW FROM HAVRE DE GRACE.
 JV0145'ABOUT 2.0 MILES NORTHWEST ALONG STATE HIGHWAY 155 FROM ITS
 JV0145'INTERSECTION WITH U.S. HIGHWAY 40 AT HAVRE DE GRACE, THENCE
 JV0145'0.15 MILE NORTH ALONG A PRIVATE DRIVEWAY TO A LARGE FRAME FARM
 JV0145'HOUSE, 30 FEET NORTHEAST OF THE NORTHEAST CORNER OF A BARN, 27
 JV0145'FEET SOUTHWEST OF A FENCE CORNER, SET IN THE TOP OF A CONCRETE
 JV0145'POST FLUSH WITH THE GROUND.
 JV0145
 JV0145                          STATION RECOVERY (1965)
 JV0145
 JV0145'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (JCB)
 JV0145'THE TOP 6 INCHES OF THE STATION MONUMENT WITH THE DISK INTACT
 JV0145'WAS FOUND IN A REFUSE HEAP.
 JV0145'
 JV0145'THE AZIMUTH MARK MONUMENT WAS FOUND LYING ON THE GROUND IN A
 JV0145'HORIZONTAL POSITION.
 JV0145'
 JV0145'THE TOP 10 INCHES OF THE MONUMENT OF REFERENCE MARK NO. 1 WITH
 JV0145'THE DISK INTACT WAS FOUND IN THE REFUSE HEAP.
 JV0145'
 JV0145'A ONE-HALF DAY UNSUCCESSFUL SEARCH WAS MADE FOR REFERENCE MARK
 JV0145'NO. 2.
 JV0145'
 JV0145'ALL OBJECTS USED AS REFERENCE POINTS IN THE ORIGINAL DESCRIPTION
 JV0145'HAVE BEEN DESTROYED AND THE FORMER STATION SITE IS NOW IN A NEW
 JV0145'HOUSING AREA.
 JV0145'
 JV0145'THE STATION IS ASSUMED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8512 ***********************************************************************
 AI8512  DESIGNATION -  EARL
 AI8512  PID         -  AI8512
 AI8512  STATE/COUNTY-  MD/HOWARD
 AI8512  COUNTRY     -  US
 AI8512  USGS QUAD   -  WOODBINE (2016)
 AI8512
 AI8512                         *CURRENT SURVEY CONTROL
 AI8512  ______________________________________________________________________
 AI8512* NAD 83(2011) POSITION- 39 19 05.06497(N) 077 00 24.05870(W)   ADJUSTED
 AI8512* NAD 83(2011) ELLIP HT-   150.648 (meters)        (06/27/12)   ADJUSTED
 AI8512* NAD 83(2011) EPOCH   -  2010.00
 AI8512* NAVD 88 ORTHO HEIGHT -   182.5   (meters)      599.    (feet) GPS OBS
 AI8512  ______________________________________________________________________
 AI8512  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8512  GEOID HEIGHT    -        -31.874 (meters)                     GEOID99
 AI8512  GEOID HEIGHT    -        -31.890 (meters)                     GEOID18
 AI8512  NAD 83(2011) X  -  1,110,954.258 (meters)                     COMP
 AI8512  NAD 83(2011) Y  - -4,814,633.610 (meters)                     COMP
 AI8512  NAD 83(2011) Z  -  4,019,793.277 (meters)                     COMP
 AI8512  LAPLACE CORR    -         -1.81  (seconds)                    DEFLEC18
 AI8512
 AI8512  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8512  Standards:
 AI8512         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8512            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8512  -------------------------------------------------------------------
 AI8512  NETWORK    0.94   1.22           0.42   0.34   0.62     -0.03769664
 AI8512  -------------------------------------------------------------------
 AI8512  Click here for local accuracies and other accuracy information.
 AI8512
 AI8512.The horizontal coordinates were established by GPS observations
 AI8512.and adjusted by the National Geodetic Survey in June 2012.
 AI8512
 AI8512.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8512.been affixed to the stable North American tectonic plate. See 
 AI8512.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8512
 AI8512.The horizontal coordinates are valid at the epoch date displayed above
 AI8512.which is a decimal equivalence of Year/Month/Day.
 AI8512
 AI8512.The orthometric height was determined by GPS observations and a
 AI8512.high-resolution geoid model.
 AI8512
 AI8512.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8512.GEOID18 height accuracy estimate available here.
 AI8512
 AI8512.Click photographs - Photos may exist for this station.
 AI8512
 AI8512.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8512
 AI8512.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8512
 AI8512.The ellipsoidal height was determined by GPS observations
 AI8512.and is referenced to NAD 83.
 AI8512
 AI8512. The following values were computed from the NAD 83(2011) position.
 AI8512
 AI8512;                    North         East     Units Scale Factor Converg.
 AI8512;SPC MD       -   183,316.994   399,423.691   MT  0.99997958   -0 00 15.1
 AI8512;SPC MD       -   601,432.50  1,310,442.56   sFT  0.99997958   -0 00 15.1
 AI8512;UTM  18      - 4,353,994.399   327,011.413   MT  0.99996846   -1 16 18.5
 AI8512
 AI8512!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8512!SPC MD       -   0.99997637  x   0.99997958  =   0.99995595
 AI8512!UTM  18      -   0.99997637  x   0.99996846  =   0.99994483
 AI8512
 AI8512_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2701153994(NAD 83)
 AI8512
 AI8512                          SUPERSEDED SURVEY CONTROL
 AI8512
 AI8512  NAD 83(2007)-  39 19 05.06501(N)    077 00 24.05945(W) AD(2002.00) 0
 AI8512  ELLIP H (02/10/07)  150.676  (m)                       GP(2002.00)    
 AI8512  ELLIP H (08/30/02)  150.676  (m)                       GP(       ) 4 2
 AI8512  NAD 83(1991)-  39 19 05.06469(N)    077 00 24.05960(W) AD(       ) 1
 AI8512  ELLIP H (11/16/00)  150.574  (m)                       GP(       ) 4 1
 AI8512
 AI8512.Superseded values are not recommended for survey control.
 AI8512
 AI8512.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8512.See file dsdata.pdf to determine how the superseded data were derived.
 AI8512
 AI8512_MARKER: DD = SURVEY DISK
 AI8512_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8512_STAMPING: EARL
 AI8512_MARK LOGO: MD-027
 AI8512_PROJECTION: FLUSH
 AI8512_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8512_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8512+STABILITY: SURFACE MOTION
 AI8512_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8512+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8512
 AI8512  HISTORY     - Date     Condition        Report By
 AI8512  HISTORY     - 1995     MONUMENTED       MD-027
 AI8512  HISTORY     - 20000915 GOOD             MD-027
 AI8512
 AI8512                          STATION DESCRIPTION
 AI8512
 AI8512'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8512'DESCRIPTION BY  HOWARD COUNTY 2000.    THE STATION IS LOCATED AT
 AI8512'COOKSVILLE  IN THE BACK OF HOWARD  COUNTY REPAIR SHOP  AT NUMBER
 AI8512'14212 FREDERICK ROAD (STATE  HIGHWAY 144). TO REACH THE STATION
 AI8512'FROM THE INTERSECTION OF  STATE HIGHWAY 97 AND STATE HIGHWAY 144
 AI8512'GO EAST 0.6 MILES ALONG  ROUTE 144 TO THE SHOP ENTRANCE ON THE
 AI8512'LEFT (NORTH). THEN GO ABOUT  400 FEET ALONG THE ENTRANCE ROAD TO A
 AI8512'METALIC GATE.  ABOUT 30 FEET  NORTWEST OF THE WEST PILLAR OF THE
 AI8512'GATE IS THE CORNER OF A FENCE SURROUNDING THE SHOP COMPOUND.
 AI8512'FOLLOW  WEST THAT BACK FENCE  FOR ABOUT 150 FEET TO THE STATION
 AI8512'NEAR  THE SALT STORAGE CONE    THE STATION IS A STANDARD HOWARD
 AI8512'COUNTY SURVEY DISC, FLUSH  WITH THE GROUND. A PERMANENT
 AI8512'METALIC     TRIPOD WAS BUILT OVER THE  MARK IN ORDER TO  ALLOW ITS
 AI8512'USE AS AN     UNMANNED  RTK  BASE STATION.
 AI8512'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0143 ***********************************************************************
 JV0143  DESIGNATION -  EARL RM 1
 JV0143  PID         -  JV0143
 JV0143  STATE/COUNTY-  MD/HARFORD
 JV0143  COUNTRY     -  US
 JV0143  USGS QUAD   -  ABERDEEN (2016)
 JV0143
 JV0143                         *CURRENT SURVEY CONTROL
 JV0143  ______________________________________________________________________
 JV0143* NAD 83(1986) POSITION- 39 34 13.55   (N) 076 07 52.81   (W)   HD_HELD1
 JV0143* NAVD 88 ORTHO HEIGHT -   134.510 (meters)      441.30  (feet) ADJUSTED
 JV0143  ______________________________________________________________________
 JV0143  GEOID HEIGHT    -        -33.032 (meters)                     GEOID18
 JV0143  DYNAMIC HEIGHT  -        134.444 (meters)      441.09  (feet) COMP
 JV0143  MODELED GRAVITY -    980,132.0   (mgal)                       NAVD 88
 JV0143
 JV0143  VERT ORDER      -  SECOND    CLASS 0
 JV0143
 JV0143.The horizontal coordinates were determined by differentially corrected
 JV0143.hand held GPS observations or other comparable positioning techniques
 JV0143.and have an estimated accuracy of +/- 3 meters.
 JV0143
 JV0143.The orthometric height was determined by differential leveling and
 JV0143.adjusted by the NATIONAL GEODETIC SURVEY
 JV0143.in June 1991.
 JV0143
 JV0143.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0143.GEOID18 height accuracy estimate available here.
 JV0143
 JV0143.Click photographs - Photos may exist for this station.
 JV0143
 JV0143.The dynamic height is computed by dividing the NAVD 88
 JV0143.geopotential number by the normal gravity value computed on the
 JV0143.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0143.degrees latitude (g = 980.6199 gals.).
 JV0143
 JV0143.The modeled gravity was interpolated from observed gravity values.
 JV0143
 JV0143;                    North         East    Units  Estimated Accuracy
 JV0143;SPC MD       -   211,689.8     474,641.9     MT  (+/- 3 meters HH1 GPS) 
 JV0143
 JV0143_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0282580692(NAD 83)
 JV0143
 JV0143                          SUPERSEDED SURVEY CONTROL
 JV0143
 JV0143  NGVD 29 (11/26/84)  134.779  (m)          442.19   (f) ADJUSTED    2 0
 JV0143
 JV0143.Superseded values are not recommended for survey control.
 JV0143
 JV0143.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0143.See file dsdata.pdf to determine how the superseded data were derived.
 JV0143
 JV0143_MARKER: DR = REFERENCE MARK DISK
 JV0143_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0143_STAMPING: EARL NO 1 1958
 JV0143_MARK LOGO: CGS
 JV0143_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0143+STABILITY: SURFACE MOTION
 JV0143
 JV0143  HISTORY     - Date     Condition        Report By
 JV0143  HISTORY     - 1958     MONUMENTED       CGS
 JV0143  HISTORY     - 1959     GOOD             CGS
 JV0143
 JV0143                          STATION DESCRIPTION
 JV0143
 JV0143'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0143'2.2 MI NW FROM HAVRE DE GRACE.
 JV0143'ABOUT 2.0 MILES NORTHWEST ALONG STATE HIGHWAY 155 FROM ITS
 JV0143'INTERSECTION WITH U.S. HIGHWAY 40 AT HAVRE DE GRACE, THENCE
 JV0143'0.15 MILE NORTH ALONG A PRIVATE DRIVEWAY TO A LARGE FRAME FARM
 JV0143'HOUSE, 23 FEET EAST OF THE NORTHEAST CORNER OF A CORN CRIB, 65
 JV0143'FEET SOUTHEAST OF THE STATION, 1 1/2 FEET SOUTH OF A BOARD
 JV0143'FENCE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0144 ***********************************************************************
 JV0144  DESIGNATION -  EARL RM 2
 JV0144  PID         -  JV0144
 JV0144  STATE/COUNTY-  MD/HARFORD
 JV0144  COUNTRY     -  US
 JV0144  USGS QUAD   -  ABERDEEN (2016)
 JV0144
 JV0144                         *CURRENT SURVEY CONTROL
 JV0144  ______________________________________________________________________
 JV0144* NAD 83(1986) POSITION- 39 34 12.75   (N) 076 07 53.33   (W)   HD_HELD1
 JV0144* NAVD 88 ORTHO HEIGHT -   134.228 (meters)      440.38  (feet) ADJUSTED
 JV0144  ______________________________________________________________________
 JV0144  GEOID HEIGHT    -        -33.032 (meters)                     GEOID18
 JV0144  DYNAMIC HEIGHT  -        134.162 (meters)      440.16  (feet) COMP
 JV0144  MODELED GRAVITY -    980,132.0   (mgal)                       NAVD 88
 JV0144
 JV0144  VERT ORDER      -  SECOND    CLASS 0
 JV0144
 JV0144.The horizontal coordinates were determined by differentially corrected
 JV0144.hand held GPS observations or other comparable positioning techniques
 JV0144.and have an estimated accuracy of +/- 3 meters.
 JV0144
 JV0144.The orthometric height was determined by differential leveling and
 JV0144.adjusted by the NATIONAL GEODETIC SURVEY
 JV0144.in June 1991.
 JV0144
 JV0144.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0144.GEOID18 height accuracy estimate available here.
 JV0144
 JV0144.Click photographs - Photos may exist for this station.
 JV0144
 JV0144.The dynamic height is computed by dividing the NAVD 88
 JV0144.geopotential number by the normal gravity value computed on the
 JV0144.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0144.degrees latitude (g = 980.6199 gals.).
 JV0144
 JV0144.The modeled gravity was interpolated from observed gravity values.
 JV0144
 JV0144;                    North         East    Units  Estimated Accuracy
 JV0144;SPC MD       -   211,665.0     474,629.7     MT  (+/- 3 meters HH1 GPS) 
 JV0144
 JV0144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0281380667(NAD 83)
 JV0144
 JV0144                          SUPERSEDED SURVEY CONTROL
 JV0144
 JV0144  NGVD 29 (11/26/84)  134.497  (m)          441.26   (f) ADJUSTED    2 0
 JV0144
 JV0144.Superseded values are not recommended for survey control.
 JV0144
 JV0144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0144.See file dsdata.pdf to determine how the superseded data were derived.
 JV0144
 JV0144_MARKER: DR = REFERENCE MARK DISK
 JV0144_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0144_STAMPING: EARL NO 2 1958
 JV0144_MARK LOGO: CGS
 JV0144_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0144+STABILITY: SURFACE MOTION
 JV0144
 JV0144  HISTORY     - Date     Condition        Report By
 JV0144  HISTORY     - 1958     MONUMENTED       CGS
 JV0144  HISTORY     - 1959     GOOD             CGS
 JV0144
 JV0144                          STATION DESCRIPTION
 JV0144
 JV0144'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0144'2.2 MI NW FROM HAVRE DE GRACE.
 JV0144'ABOUT 2.0 MILES NORTHWEST ALONG STATE HIGHWAY 155 FROM ITS
 JV0144'INTERSECTION WITH U.S. HIGHWAY 40 AT HAVRE DE GRACE, THENCE
 JV0144'0.15 MILE NORTH ALONG A PRIVATE DRIVEWAY TO A LARGE FRAME FARM
 JV0144'HOUSE, 98.8 FEET SOUTHEAST OF THE STATION, 49 FEET NORTH OF THE
 JV0144'SOUTHWEST CORNER OF A BARN, 26 FEET SOUTHEAST OF THE CENTER
 JV0144'LINE OF A DRIVEWAY, SET IN THE TOP OF A CONCRETE POST FLUSH
 JV0144'WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1940 ***********************************************************************
 HU1940  DESIGNATION -  EARLE
 HU1940  PID         -  HU1940
 HU1940  STATE/COUNTY-  MD/WICOMICO
 HU1940  COUNTRY     -  US
 HU1940  USGS QUAD   -  WETIPQUIN (2016)
 HU1940
 HU1940                         *CURRENT SURVEY CONTROL
 HU1940  ______________________________________________________________________
 HU1940* NAD 83(1991) POSITION- 38 20 32.51533(N) 075 52 03.23890(W)   ADJUSTED
 HU1940* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1940  ______________________________________________________________________
 HU1940  GEOID HEIGHT    -        -35.652 (meters)                     GEOID18
 HU1940  LAPLACE CORR    -         -2.13  (seconds)                    DEFLEC18
 HU1940  HORZ ORDER      -  THIRD
 HU1940
 HU1940.The horizontal coordinates were established by classical geodetic methods
 HU1940.and adjusted by the National Geodetic Survey in January 1992.
 HU1940
 HU1940.The orthometric height was scaled from a topographic map.
 HU1940
 HU1940.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1940.GEOID18 height accuracy estimate available here.
 HU1940
 HU1940.Click photographs - Photos may exist for this station.
 HU1940
 HU1940.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1940
 HU1940. The following values were computed from the NAD 83(1991) position.
 HU1940
 HU1940;                    North         East     Units Scale Factor Converg.
 HU1940;SPC MD       -    75,619.539   498,996.998   MT  0.99999290   +0 42 38.7
 HU1940;SPC MD       -   248,095.10  1,637,125.98   sFT  0.99999290   +0 42 38.7
 HU1940;UTM  18      - 4,244,158.376   424,184.797   MT  0.99967079   -0 32 17.6
 HU1940
 HU1940!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1940!SPC MD       -   1.00000563  x   0.99999290  =   0.99999853
 HU1940!UTM  18      -   1.00000563  x   0.99967079  =   0.99967642
 HU1940
 HU1940:                Primary Azimuth Mark                     Grid Az
 HU1940:SPC MD       -  JULIET                                   220 22 26.0
 HU1940:UTM  18      -  JULIET                                   221 37 22.3
 HU1940
 HU1940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2418444158(NAD 83)
 HU1940
 HU1940|---------------------------------------------------------------------|
 HU1940| PID    Reference Object                     Distance      Geod. Az  |
 HU1940|                                                           dddmmss.s |
 HU1940| HU1953 JULIET                              APPROX. 2.0 KM 2210504.7 |
 HU1940|---------------------------------------------------------------------|
 HU1940
 HU1940                          SUPERSEDED SURVEY CONTROL
 HU1940
 HU1940  NAD 83(1986)-  38 20 32.51337(N)    075 52 03.25986(W) AD(       ) 3
 HU1940  NAD 27      -  38 20 32.07251(N)    075 52 04.51828(W) AD(       ) 3
 HU1940  USSD        -  38 20 32.49600(N)    075 52 04.25600(W) AD(       ) 3
 HU1940
 HU1940.Superseded values are not recommended for survey control.
 HU1940
 HU1940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1940.See file dsdata.pdf to determine how the superseded data were derived.
 HU1940
 HU1940_MARKER: H = DRILL HOLE
 HU1940_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1940_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1940+STABILITY: SURFACE MOTION
 HU1940
 HU1940  HISTORY     - Date     Condition        Report By
 HU1940  HISTORY     - 1907     MONUMENTED       CGS
 HU1940  HISTORY     - 1933     GOOD             LOCENG
 HU1940  HISTORY     - 1942     GOOD             CGS
 HU1940  HISTORY     - 1950     GOOD             CGS
 HU1940  HISTORY     - 1961     GOOD             CGS
 HU1940  HISTORY     - 1975     GOOD             MDDNR
 HU1940  HISTORY     - 1980     GOOD             MDDNR
 HU1940
 HU1940                          STATION DESCRIPTION
 HU1940
 HU1940'DESCRIBED BY COAST AND GEODETIC SURVEY 1907 (CCY)
 HU1940'STATION IS ON THE SE SHORE OF NANTICOKE RIVER, ABOUT 1 MILE BELOW
 HU1940'SANDY HILL WHARF, ON SAND AND GRASS LAND BETWEEN RIVER AND PINE
 HU1940'GROVE, ABOUT 80 YARDS BACK FROM AND 5 FEET ABOVE HIGH-WATER MARK.  A
 HU1940'SHANTY STANDS ABOUT 20 YARDS TO THE W AND A SAND BEACH IS NW OF THE
 HU1940'STATION.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF
 HU1940'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HU1940'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HU1940'INCHES.  THE LETTERS M. S. F. C. AND U. S. C. S. ARE COUNTER-SUNK
 HU1940'IN TOP OF POST.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HU1940'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN PINE TREE, 19.05 METERS
 HU1940'(62.5 FEET), N 21 DEG 44 MIN E.  NAIL IN BLAZE IN 2 1/2-FOOT OAK
 HU1940'TREE, 13.95 METERS (45.8 FEET), N 57 DEG 41 MIN E.  NAIL IN BLAZE IN
 HU1940'PINE TREE, 15.76 METERS (51.7 FEET), S 07 DEG 06 MIN W.  RIGHT
 HU1940'TANGENT OF WOODS ON OTHER SIDE OF WETIPQUIN CREEK, 1-1/2 MILES,
 HU1940'S 39 DEG 57 MIN W.  NAIL IN BLAZE IN 2 1/2-FOOT WHITE OAK TREE, 13.98
 HU1940'METERS (45.9 FEET), N 50 DEG 11 MIN W.
 HU1940
 HU1940                          STATION RECOVERY (1933)
 HU1940
 HU1940'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1933
 HU1940'RECOVERED.
 HU1940
 HU1940                          STATION RECOVERY (1942)
 HU1940
 HU1940'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1940'THE STATION IS LOCATED ON THE SE SHORE OF THE NANTICOKE RIVER, ABOUT
 HU1940'1 MILE N OF THE MOUTH OF WETIPQUIN CREEK, ABOUT 80 METERS SE OF THE
 HU1940'SHORELINE, IN A GROVE OF TREES, ABOUT 5 FEET ABOVE HIGH WATER, 62.5
 HU1940'FEET S OF A NAIL IN A BLAZED 20-INCH PINE TREE, AND 46 FEET SE OF
 HU1940'A NAIL IN A BLAZE OF A 30-INCH WHITE OAK TREE.
 HU1940'
 HU1940'THE STATION IS THE CENTER OF A 3/4-INCH HOLE IN THE CENTER OF THE TOP
 HU1940'OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN
 HU1940'8-INCH SQUARE CONCRETE POST THAT IS FLUSH WITH THE GROUND.  THE
 HU1940'LETTERS M. S. F. C. AND U. S. C. S. ARE COUNTERSUNK IN
 HU1940'THE TOP.  THE STATION IS IN GOOD CONDITION.
 HU1940
 HU1940                          STATION RECOVERY (1950)
 HU1940
 HU1940'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HU1940'STATION WAS FOUND AS DESCRIBED IN GOOD CONDITION.  THE ORIGINAL
 HU1940'DESCRIPTION AS AMENDED IN 1942 BY W. D. P. IS ADEQUATE.
 HU1940'
 HU1940'TO ASSIST IN RECOVERY FROM THE WATER, LAND ON THE SAND BEACH AT A
 HU1940'SMALL HUT WHICH HAS A FEW MIMOSA TREES IN FRONT.  FOLLOW THE PATH
 HU1940'INTO THE WOODS TO THE STATION.
 HU1940
 HU1940                          STATION RECOVERY (1961)
 HU1940
 HU1940'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HU1940'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE SHACK AND 20-INCH
 HU1940'PINE TREE USED AS POINTS OF REFERENCE IN THE DESCRIPTION NO LONGER
 HU1940'EXIST.
 HU1940'
 HU1940'THE STATION IS ABOUT 200 FT. E OF A SMALL, GRAY, PAINTED SHED ON THE
 HU1940'SHORELINE.  46 FT. SE OF A NAIL IN A BLAZE OF A 30-INCH WHITE OAK
 HU1940'TREE, 62.5 FT. S OF A 20-INCH PINE TREE STUMP, 8.5 FT. SW OF A NAIL
 HU1940'IN A BLAZE OF A 10-INCH PINE TREE, 5 FT. E OF A CLUMP OF BRUSH.  THE
 HU1940'MARYLAND SHELL FISHERIES MONUMENT IS FLUSH WITH THE GROUND.
 HU1940
 HU1940                          STATION RECOVERY (1975)
 HU1940
 HU1940'RECOVERY NOTE BY MD DEPT OF NAT RES 1975 (GH)
 HU1940'MSFC-USCS RECOVERED GOOD.
 HU1940'
 HU1940'STA. RECOVERED AS DESC. WITH ADDS AND CHANGES--STA. NOW 3 INCH BELOW
 HU1940'SURFACE WITH BLAZED 6 INCH PINE TREE AT W. EDGE OF MONUMENT.  30
 HU1940'INCH WHITE OAK IS NOW 48 INCH OAK AND BLAZE WITH NAIL IS HOLE IN
 HU1940'TRUNK OF TREE.  STUMP AND BLAZED 10 INCH PINE RECOVERED.  NEW REFS,
 HU1940'STA. 16 FT E OF BLAZED 10 INCH PINE AND 15 FT S OF CENTERLINE OF
 HU1940'WOODS ROAD.  STA. IS APPROX 100 PACES EASTERLY ALONG TRAIL
 HU1940'FROM OLD SHACK AT WATERS EDGE.
 HU1940'
 HU1940'DISTANCE AND DIRECTION FROM NEAREST TOWN--1-1/2 MILES NORTH OF
 HU1940'TYASKIN.
 HU1940
 HU1940                          STATION RECOVERY (1980)
 HU1940
 HU1940'RECOVERY NOTE BY MD DEPT OF NAT RES 1980 (LW)
 HU1940'PRESENT DESCRIPTION OK.  RECOVERED GOOD BUT 30 INCHES
 HU1940'WHITE OAK DEAD AND ROTTING 8 INCH CONCRETE MON. IN GROVE
 HU1940'OF YELLOW PINES ON PROPERTY LARGE PINE HAS BEEN CUT DOWN
 HU1940'OF MR. DENISOF (301-873-02269) 2-1/2 S OF WITNESS POST, JUST E. OF
 HU1940'5 INCHES YELLOW PINE, TOP OF MON. FLUSH UP GROUND.
 HU1940'
 HU1940'DISTANCE AND DIRECTION FROM NEAREST TOWN--1-1/4 MI N OF TYASKIN MD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5026 ***********************************************************************
 JV5026  DESIGNATION -  EARLE
 JV5026  PID         -  JV5026
 JV5026  STATE/COUNTY-  MD/QUEEN ANNES
 JV5026  COUNTRY     -  US
 JV5026  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5026
 JV5026                         *CURRENT SURVEY CONTROL
 JV5026  ______________________________________________________________________
 JV5026* NAD 83(1991) POSITION- 39 04 47.28522(N) 076 08 22.50682(W)   ADJUSTED
 JV5026* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5026  ______________________________________________________________________
 JV5026  GEOID HEIGHT    -        -33.583 (meters)                     GEOID18
 JV5026  LAPLACE CORR    -         -2.62  (seconds)                    DEFLEC18
 JV5026  HORZ ORDER      -  THIRD
 JV5026
 JV5026.The horizontal coordinates were established by classical geodetic methods
 JV5026.and adjusted by the National Geodetic Survey in January 1992.
 JV5026
 JV5026.The orthometric height was scaled from a topographic map.
 JV5026
 JV5026.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5026.GEOID18 height accuracy estimate available here.
 JV5026
 JV5026.Click photographs - Photos may exist for this station.
 JV5026
 JV5026.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5026
 JV5026. The following values were computed from the NAD 83(1991) position.
 JV5026
 JV5026;                    North         East     Units Scale Factor Converg.
 JV5026;SPC MD       -   157,215.898   474,446.475   MT  0.99995617   +0 32 24.1
 JV5026;SPC MD       -   515,799.16  1,556,579.81   sFT  0.99995617   +0 32 24.1
 JV5026;UTM  18      - 4,326,250.291   401,430.909   MT  0.99971963   -0 43 06.4
 JV5026
 JV5026!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5026!SPC MD       -   1.00000515  x   0.99995617  =   0.99996132
 JV5026!UTM  18      -   1.00000515  x   0.99971963  =   0.99972478
 JV5026
 JV5026:                Primary Azimuth Mark                     Grid Az
 JV5026:SPC MD       -  HOLTON POINT                             267 56 36.7
 JV5026:UTM  18      -  HOLTON POINT                             269 12 07.2
 JV5026
 JV5026_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0143026250(NAD 83)
 JV5026
 JV5026|---------------------------------------------------------------------|
 JV5026| PID    Reference Object                     Distance      Geod. Az  |
 JV5026|                                                           dddmmss.s |
 JV5026| JV5027 SWEPSON                             APPROX. 0.6 KM 0292428.2 |
 JV5026| JV5036 HOLTON POINT                        APPROX. 0.9 KM 2682900.8 |
 JV5026|---------------------------------------------------------------------|
 JV5026
 JV5026                          SUPERSEDED SURVEY CONTROL
 JV5026
 JV5026  NAD 83(1986)-  39 04 47.27965(N)    076 08 22.51884(W) AD(       ) 3
 JV5026  NAD 27      -  39 04 46.88700(N)    076 08 23.69000(W) AD(       ) 3
 JV5026  USSD        -  39 04 47.27000(N)    076 08 23.49900(W) AD(       ) 3
 JV5026
 JV5026.Superseded values are not recommended for survey control.
 JV5026
 JV5026.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5026.See file dsdata.pdf to determine how the superseded data were derived.
 JV5026
 JV5026_MARKER: H = DRILL HOLE
 JV5026_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5026_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5026+STABILITY: SURFACE MOTION
 JV5026
 JV5026  HISTORY     - Date     Condition        Report By
 JV5026  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5026  HISTORY     - 1927     SEE DESCRIPTION  CGS
 JV5026  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV5026
 JV5026                          STATION DESCRIPTION
 JV5026
 JV5026'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5026'STATION IS ON THE SOUTHERN SHORE OF CORSICA RIVER, ON TOWN BAR
 JV5026'POINT, ABOUT 1/2 MILE E OF CHESTER RIVER AND 100 YARDS N OF EARLE
 JV5026'WHARF, ON MARSHLAND, ABOUT 1 FOOT ABOVE HIGH WATER, 5 YARDS S OF
 JV5026'SHORE, AND 19 YARDS N OF A POND.
 JV5026'
 JV5026'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5026'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5026'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5026'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5026'MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE
 JV5026'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5026'
 JV5026'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5026'FOLLOWS--NAIL IN BLAZE IN 3-INCH LOCUST TREE, 11.07 METERS (36.3
 JV5026'FEET), S 23 DEG 21 MIN W.  EARLES WINDMILL, 300 YARDS, S 53 DEG 29
 JV5026'MIN W. GABLE OF BARN, 3-5/8 MILES, N 79 DEG 17 MIN W. E GABLE OF SMALL
 JV5026'HOUSE, 2-3/4 MILES, N 65 DEG 12 MIN W. CHURCH STEEPLE AT CROSBY,
 JV5026'3-3/4 MILES, N 48 DEG 18 MIN W. S GABLE OF BROWNS HOUSE, 2-1/4 MILES,
 JV5026'N 35 DEG 29 MIN W. W CHIMNEY OF HOUSE, 5/8 MILE, N 00 DEG 15 MIN W.
 JV5026'S GABLE OF EMORYS BARN, 3/4 MILE, N 53 DEG 30 MIN E. W CHIMNEY
 JV5026'OF HOUSE, 1-7/8 MILES, S 86 DEG 28 MIN E. LONE SYCAMORE TREE, 1/2
 JV5026'MILE, S 53 DEG 55 MIN E. E CHIMNEY OF HOUSE, 1/2 MILE, S 45 DEG 42
 JV5026'MIN E.  SE PILE AT END OF EARLE WHARF, 100 YARDS, S 15 DEG 39 MIN E.
 JV5026'NAIL IN BLAZE IN 5-INCH LOCUST TREE, 12.92 METERS (42.4 FEET), S 01
 JV5026'DEG 20 MIN E.
 JV5026
 JV5026                          STATION RECOVERY (1927)
 JV5026
 JV5026'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1927 (LFE)
 JV5026'A LETTER FROM LLOYD F. EMORY, 4 S. FIFTEENTH STREET, PHILADELPHIA,
 JV5026'SEPTEMBER 19, 1927, STATES--
 JV5026'
 JV5026'FOUND UPPER PART OF CONCRETE MARK FORMERLY MARKING TRIANGULATION
 JV5026'STATION ON TOWN POINT AT THE MOUTH OF THE CORSICA RIVER, IN A FIELD
 JV5026'SEVERAL HUNDRED YARDS AWAY FROM PROPER LOCATION.  BLOCK 6 INCHES
 JV5026'SQUARE ON TOP AND MARKED WITH A TRIANGLE, CENTER POINT, AND
 JV5026'LETTERS D.M.--U.S.C.S.  BLOCK ONLY ABOUT 8 INCHES DEEP, LOWER
 JV5026'PORTION MAY STILL BE IN PLACE.
 JV5026
 JV5026                          STATION RECOVERY (1939)
 JV5026
 JV5026'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5026'STATION SEARCHED FOR BUT NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ5994 ***********************************************************************
 AJ5994  DESIGNATION -  EARTHDATA
 AJ5994  PID         -  AJ5994
 AJ5994  STATE/COUNTY-  MD/WASHINGTON
 AJ5994  COUNTRY     -  US
 AJ5994  USGS QUAD   -  HAGERSTOWN (2016)
 AJ5994
 AJ5994                         *CURRENT SURVEY CONTROL
 AJ5994  ______________________________________________________________________
 AJ5994* NAD 83(2011) POSITION- 39 42 42.91465(N) 077 44 06.81012(W)   ADJUSTED
 AJ5994* NAD 83(2011) ELLIP HT-   161.036 (meters)        (06/27/12)   ADJUSTED
 AJ5994* NAD 83(2011) EPOCH   -  2010.00
 AJ5994* NAVD 88 ORTHO HEIGHT -   195.3   (meters)      641.    (feet) GPS OBS
 AJ5994  ______________________________________________________________________
 AJ5994  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ5994  GEOID HEIGHT    -        -34.238 (meters)                     GEOID99
 AJ5994  GEOID HEIGHT    -        -34.270 (meters)                     GEOID18
 AJ5994  NAD 83(2011) X  -  1,043,737.045 (meters)                     COMP
 AJ5994  NAD 83(2011) Y  - -4,801,189.907 (meters)                     COMP
 AJ5994  NAD 83(2011) Z  -  4,053,534.198 (meters)                     COMP
 AJ5994  LAPLACE CORR    -          2.86  (seconds)                    DEFLEC18
 AJ5994
 AJ5994  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ5994  Standards:
 AJ5994         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ5994            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ5994  -------------------------------------------------------------------
 AJ5994  NETWORK    0.84   3.31           0.39   0.27   1.69      0.00591202
 AJ5994  -------------------------------------------------------------------
 AJ5994  Click here for local accuracies and other accuracy information.
 AJ5994
 AJ5994.The horizontal coordinates were established by GPS observations
 AJ5994.and adjusted by the National Geodetic Survey in June 2012.
 AJ5994
 AJ5994.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ5994.been affixed to the stable North American tectonic plate. See 
 AJ5994.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ5994
 AJ5994.The horizontal coordinates are valid at the epoch date displayed above
 AJ5994.which is a decimal equivalence of Year/Month/Day.
 AJ5994
 AJ5994.The orthometric height was determined by GPS observations and a
 AJ5994.high-resolution geoid model.
 AJ5994
 AJ5994.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ5994.GEOID18 height accuracy estimate available here.
 AJ5994
 AJ5994.Click photographs - Photos may exist for this station.
 AJ5994
 AJ5994.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ5994
 AJ5994.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ5994
 AJ5994.The ellipsoidal height was determined by GPS observations
 AJ5994.and is referenced to NAD 83.
 AJ5994
 AJ5994. The following values were computed from the NAD 83(2011) position.
 AJ5994
 AJ5994;                    North         East     Units Scale Factor Converg.
 AJ5994;SPC MD       -   227,298.490   336,950.390   MT  1.00005633   -0 27 41.2
 AJ5994;SPC MD       -   745,728.46  1,105,478.07   sFT  1.00005633   -0 27 41.2
 AJ5994;UTM  18      - 4,399,361.423   265,527.303   MT  1.00027690   -1 44 54.3
 AJ5994
 AJ5994!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ5994!SPC MD       -   0.99997474  x   1.00005633  =   1.00003107
 AJ5994!UTM  18      -   0.99997474  x   1.00027690  =   1.00025163
 AJ5994
 AJ5994_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6552799361(NAD 83)
 AJ5994
 AJ5994                          SUPERSEDED SURVEY CONTROL
 AJ5994
 AJ5994  NAD 83(2007)-  39 42 42.91491(N)    077 44 06.81054(W) AD(2002.00) 0
 AJ5994  ELLIP H (02/10/07)  161.061  (m)                       GP(2002.00)    
 AJ5994  ELLIP H (08/09/02)  161.067  (m)                       GP(       ) 3 2
 AJ5994  NAD 83(1991)-  39 42 42.91487(N)    077 44 06.81059(W) AD(       ) B
 AJ5994  ELLIP H (11/06/01)  161.067  (m)                       GP(       ) 4 1
 AJ5994
 AJ5994.Superseded values are not recommended for survey control.
 AJ5994
 AJ5994.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ5994.See file dsdata.pdf to determine how the superseded data were derived.
 AJ5994
 AJ5994_MARKER: DH = HORIZONTAL CONTROL DISK
 AJ5994_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ5994_STAMPING: EARTHDATA 2001
 AJ5994_MARK LOGO: NGS
 AJ5994_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ5994_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ5994+STABILITY: SURFACE MOTION
 AJ5994_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ5994+SATELLITE: SATELLITE OBSERVATIONS - August 30, 2001
 AJ5994
 AJ5994  HISTORY     - Date     Condition        Report By
 AJ5994  HISTORY     - 20010830 MONUMENTED       NGS
 AJ5994
 AJ5994                          STATION DESCRIPTION
 AJ5994
 AJ5994'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (JMW)
 AJ5994'THE STATION IS LOCATED ABOUT 5.0 MILES NORTH OF HAGERSTOWN, AT THE
 AJ5994'WASHINGTON COUNTY REGIONAL AIRPORT, THE MONUMENT IS ON PROPERTY OWNED
 AJ5994'BY THE COUNTY OF WASHINGTON, WASHINGTON COUNTY REGIONAL AIRPORT, 18434
 AJ5994'SHOWATER ROAD, HAGERSTOWN, MD 21742-1347.  CONTACT AIRPORT OPERATIONS
 AJ5994'MANAGER CAROLYN MOTZ, PHONE 301 791-3333.
 AJ5994'
 AJ5994'TO REACH FROM THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAY
 AJ5994'81 AND MASON DIXON ROAD (EXIT 10), GO EAST ON MASON DIXON ROAD FOR
 AJ5994'0.25 MI TO STATE HIGHWAY 11 AND A DEAD END, TURN RIGHT AND SOUTH ON
 AJ5994'STATE HIGHWAY 11 FOR 0.35 MI TO THE INTERSECTION OF HENSON BOULEVARD,
 AJ5994'TURN RIGHT AND SOUTH ON HENSON BOULEVARD FOR 0.5 MI TO AIR PARK ROAD,
 AJ5994'TURN RIGHT AND SOUTHWEST ON AIRPARK ROAD FOR 0.2 MI TO THE STATION ON
 AJ5994'THE LEFT.
 AJ5994'
 AJ5994'THE STATION IS A STANDARD NGS HORIZONTAL CONTROL DISK SET IN A
 AJ5994'CONCRETE MONUMENT, 37.0 M NORTHEAST OF THE NORTHEAST CORNER OF THE
 AJ5994'EARTHDATA AVIATION HANGER AND OFFICE, 26.6 M WEST OF THE WEST EDGE OF
 AJ5994'A CONCRETE SLAB, 11.9 M SOUTHEAST OF A FENCE CORNER POST, 9.3 M EAST
 AJ5994'OF A NORTH-SOUTH FENCE, 8.3 M M SOUTH OF A WITNESS POST AND A
 AJ5994'CHAIN-LINK FENCE.  THE MONUMENT IS RECESSED 0.03 M BELOW THE GROUND
 AJ5994'SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW1325 ***********************************************************************
 FW1325  DESIGNATION -  EAST
 FW1325  PID         -  FW1325
 FW1325  STATE/COUNTY-  MD/SOMERSET
 FW1325  COUNTRY     -  US
 FW1325  USGS QUAD   -  CRISFIELD (2016)
 FW1325
 FW1325                         *CURRENT SURVEY CONTROL
 FW1325  ______________________________________________________________________
 FW1325* NAD 83(1993) POSITION- 37 55 43.27460(N) 075 50 03.53429(W)   ADJUSTED
 FW1325* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 FW1325  ______________________________________________________________________
 FW1325  GEOID HEIGHT    -        -36.175 (meters)                     GEOID18
 FW1325  LAPLACE CORR    -         -1.72  (seconds)                    DEFLEC18
 FW1325  HORZ ORDER      -  THIRD
 FW1325
 FW1325.The horizontal coordinates were established by classical geodetic methods
 FW1325.and adjusted by the National Geodetic Survey in November 1994.
 FW1325
 FW1325.The orthometric height was scaled from a topographic map.
 FW1325
 FW1325.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW1325.GEOID18 height accuracy estimate available here.
 FW1325
 FW1325.Click photographs - Photos may exist for this station.
 FW1325
 FW1325.The Laplace correction was computed from DEFLEC18 derived deflections.
 FW1325
 FW1325. The following values were computed from the NAD 83(1993) position.
 FW1325
 FW1325;                    North         East     Units Scale Factor Converg.
 FW1325;SPC MD       -    29,740.412   502,490.000   MT  1.00008531   +0 43 53.8
 FW1325;SPC MD       -    97,573.34  1,648,585.94   sFT  1.00008531   +0 43 53.8
 FW1325;SPC VA S     - 1,180,358.686 3,734,327.497   MT  0.99999329   +1 37 04.3
 FW1325;SPC VA S     - 3,872,560.12 12,251,706.13   sFT  0.99999329   +1 37 04.3
 FW1325;UTM  18      - 4,198,230.941   426,677.849   MT  0.99966621   -0 30 46.3
 FW1325
 FW1325!             -  Elev Factor  x  Scale Factor =   Combined Factor
 FW1325!SPC MD       -   1.00000572  x   1.00008531  =   1.00009103
 FW1325!SPC VA S     -   1.00000572  x   0.99999329  =   0.99999901
 FW1325!UTM  18      -   1.00000572  x   0.99966621  =   0.99967193
 FW1325
 FW1325:                Primary Azimuth Mark                     Grid Az
 FW1325:SPC MD       -  BROAD                                    265 47 47.4
 FW1325:SPC VA S     -  BROAD                                    264 54 36.9
 FW1325:UTM  18      -  BROAD                                    267 02 27.5
 FW1325
 FW1325_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVG2667798230(NAD 83)
 FW1325
 FW1325|---------------------------------------------------------------------|
 FW1325| PID    Reference Object                     Distance      Geod. Az  |
 FW1325|                                                           dddmmss.s |
 FW1325| DC7255 EAST RM                               6.380 METERS 14947     |
 FW1325| FW1323 BROAD                               APPROX. 1.3 KM 2663141.2 |
 FW1325|---------------------------------------------------------------------|
 FW1325
 FW1325                          SUPERSEDED SURVEY CONTROL
 FW1325
 FW1325  NAD 83(1991)-  37 55 43.27489(N)    075 50 03.54131(W) AD(       ) 3
 FW1325  NAD 83(1986)-  37 55 43.27427(N)    075 50 03.56083(W) AD(       ) 3
 FW1325  NAD 27      -  37 55 42.82600(N)    075 50 04.79100(W) AD(       ) 3
 FW1325  USSD        -  37 55 43.18800(N)    075 50 04.56500(W) AD(       ) 3
 FW1325
 FW1325.Superseded values are not recommended for survey control.
 FW1325
 FW1325.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW1325.See file dsdata.pdf to determine how the superseded data were derived.
 FW1325
 FW1325
 FW1325  HISTORY     - Date     Condition        Report By
 FW1325  HISTORY     - 1898     MONUMENTED       MDSFC
 FW1325  HISTORY     - 1923     SEE DESCRIPTION  CGS
 FW1325  HISTORY     - 1951     GOOD             CGS
 FW1325  HISTORY     - 1960     MARK NOT FOUND   CGS
 FW1325
 FW1325                          STATION DESCRIPTION
 FW1325
 FW1325'DESCRIBED BY COAST AND GEODETIC SURVEY 1923
 FW1325'STATION IS ON THE N SHORE OF POCOMOKE SOUND, BETWEEN APES HOLE
 FW1325'AND BROAD CREEKS, ON A DETACHED MARSH POINT CALLED OYSTERSHELL
 FW1325'POINT, ON E SIDE OF ENTRANCE TO COW GAP CREEK.  THIS DETACHED
 FW1325'MARSH POINT OR ISLAND IS ABOUT 200 YARDS FROM THE
 FW1325'MAINLAND.  WATER BUSHES COVER THE NORTHERLY PART OF THE
 FW1325'ISLAND.  IT IS ON THE SOUTHERLY PART OF THE ISLAND, ABOUT 13
 FW1325'YARDS S FROM THE SHORE, 14 YARDS W OF SHORE, 36 YARDS N OF
 FW1325'SHORE, AND 5 YARDS E OF SHORE.  STATION MARK IS A SPIKE IN A
 FW1325'CEMENT-FILLED DRAINTILE PIPE, 3-1/2 FEET LONG, SET WITH
 FW1325'ITS TOP FLUSH WITH THE SURFACE OF THE GROUND.  THE REFERENCE
 FW1325'MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 FW1325'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 FW1325'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 FW1325'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 FW1325'POST.  IT IS 6.38 METERS (20.93 FEET) FROM THE STATION
 FW1325'S 30 DEG 15 MIN E.  OTHER DISTANCES AND BEARINGS ARE AS
 FW1325'FOLLOWS--POLE AT OYSTER HOUSE, 3-1/2 MILES, S 34 DEG 53 MIN W.
 FW1325'POINT OF LAND W, 200 YARDS,S 63 DEG 06 MIN W.  CABIN CHIMNEY, 1/4
 FW1325'MILE,S 70 DEG 50 MIN W.  TALL TREE, 1-3/4 MILES, N 21 DEG 52 MIN W.
 FW1325'POINT OF LAND E, 35 YARDS, N 81 DEG 00 MIN E.  WHEN
 FW1325'RECOVERED IN 1916 THE STATION MARK WAS REPORTED AS BEING IN
 FW1325'VERY SOFT GROUND, WHILE THE REFERENCE MARK WAS REPORTED AS
 FW1325'HAVING BEEN REMOVED.
 FW1325
 FW1325                          STATION RECOVERY (1951)
 FW1325
 FW1325'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951 (JB)
 FW1325'STATION WAS RECOVERED AS DESCRIBED.  THE REFERENCE MARK WAS NOT
 FW1325'FOUND.
 FW1325'
 FW1325'STATION MARK IS A SPIKE IN A CEMENT-FILLED DRAIN TILE PIPE,
 FW1325'3-1/2 FEET LONG, SET WITH ITS TOP FLUSH WITH THE SURFACE OF THE
 FW1325'GROUND.
 FW1325'
 FW1325'STATION IS NOW IN AN UNSTABLE CONDITION AS THE SMALL ISLAND ON
 FW1325'WHICH ORIGINALLY LOCATED HAS ALMOST ERODED AWAY.  (PRESENT SIZE
 FW1325'OF THE ISLAND IS ABOUT 10 FEET IN DIAMETER.) THE STATION MARK IS
 FW1325'STANDING IN THE WATER JUST OFF THE NE SIDE OF THE ISLAND.
 FW1325
 FW1325                          STATION RECOVERY (1960)
 FW1325
 FW1325'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 FW1325'STATION NOT RECOVERED AFTER A SEARCH OF THE NE SIDE OF THE
 FW1325'ISLAND.  IT HAS UNDOUBTEDLY BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5733 ***********************************************************************
 JV5733  DESIGNATION -  EAST
 JV5733  PID         -  JV5733
 JV5733  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5733  COUNTRY     -  US
 JV5733  USGS QUAD   -  CURTIS BAY (2016)
 JV5733
 JV5733                         *CURRENT SURVEY CONTROL
 JV5733  ______________________________________________________________________
 JV5733* NAD 83(1991) POSITION- 39 13 56.67206(N) 076 33 34.81572(W)   ADJUSTED
 JV5733* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5733  ______________________________________________________________________
 JV5733  GEOID HEIGHT    -        -32.928 (meters)                     GEOID18
 JV5733  LAPLACE CORR    -         -3.64  (seconds)                    DEFLEC18
 JV5733  HORZ ORDER      -  THIRD
 JV5733
 JV5733.The horizontal coordinates were established by classical geodetic methods
 JV5733.and adjusted by the National Geodetic Survey in January 1992.
 JV5733
 JV5733.The orthometric height was scaled from a topographic map.
 JV5733
 JV5733.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5733.GEOID18 height accuracy estimate available here.
 JV5733
 JV5733.Click photographs - Photos may exist for this station.
 JV5733
 JV5733.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5733
 JV5733. The following values were computed from the NAD 83(1991) position.
 JV5733
 JV5733;                    North         East     Units Scale Factor Converg.
 JV5733;SPC MD       -   173,898.349   438,017.696   MT  0.99996917   +0 16 34.9
 JV5733;SPC MD       -   570,531.50  1,437,063.06   sFT  0.99996917   +0 16 34.9
 JV5733;UTM  18      - 4,343,726.734   365,384.921   MT  0.99982312   -0 59 11.7
 JV5733
 JV5733!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5733!SPC MD       -   1.00000505  x   0.99996917  =   0.99997422
 JV5733!UTM  18      -   1.00000505  x   0.99982312  =   0.99982817
 JV5733
 JV5733:                Primary Azimuth Mark                     Grid Az
 JV5733:SPC MD       -  F S ROYSTER 1915                         319 42 13.4
 JV5733:UTM  18      -  F S ROYSTER 1915                         320 58 00.0
 JV5733
 JV5733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6538443726(NAD 83)
 JV5733
 JV5733|---------------------------------------------------------------------|
 JV5733| PID    Reference Object                     Distance      Geod. Az  |
 JV5733|                                                           dddmmss.s |
 JV5733| JV5471 CANTON RAILROAD CO TANK             APPROX. 3.2 KM 0002543.2 |
 JV5733| JV5474 CAMP HOLABIRD BLACK YELLOW TK       APPROX. 4.7 KM 0253935.0 |
 JV5733| JV5283 HUMPHREY CREEK TANK                 APPROX. 6.0 KM 0900147.3 |
 JV5733| JV5694 SOLLERS POINT WATER TANK            APPROX. 3.9 KM 0921052.9 |
 JV5733| JV5734 US QUARANTINE STATION TANK          APPROX. 2.1 KM 1580222.5 |
 JV5733| CA9378 EAST RM                              23.995 METERS 25247     |
 JV5733| JV5726 F S ROYSTER 1915                    APPROX. 1.1 KM 3195848.3 |
 JV5733| JV5529 PENN RR CO TANK                     APPROX. 4.1 KM 3482708.6 |
 JV5733| JV5470 CANTON RAILROAD TERMINAL TANK       APPROX. 3.3 KM 3544816.9 |
 JV5733|---------------------------------------------------------------------|
 JV5733
 JV5733                          SUPERSEDED SURVEY CONTROL
 JV5733
 JV5733  NAD 83(1986)-  39 13 56.66820(N)    076 33 34.82488(W) AD(       ) 3
 JV5733  NAD 27      -  39 13 56.27800(N)    076 33 35.95200(W) AD(       ) 3
 JV5733
 JV5733.Superseded values are not recommended for survey control.
 JV5733
 JV5733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5733.See file dsdata.pdf to determine how the superseded data were derived.
 JV5733
 JV5733_MARKER: DS = TRIANGULATION STATION DISK
 JV5733_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV5733_SP_SET: SIDEWALK
 JV5733_STAMPING: EAST 1934
 JV5733_MARK LOGO: CGS
 JV5733_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5733
 JV5733  HISTORY     - Date     Condition        Report By
 JV5733  HISTORY     - 1934     MONUMENTED       CGS
 JV5733  HISTORY     - 1956     MARK NOT FOUND   AMS
 JV5733
 JV5733                          STATION DESCRIPTION
 JV5733
 JV5733'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5733'STATION IS ON THE SOUTHERN SHORE OF THE PATAPSCO RIVER 1/2 MILE
 JV5733'NNE OF FISHING POINT ON A FILL, SURROUNDED BY A BULKHEAD, ABOUT
 JV5733'9 YARDS W OF EDGE OF BULKHEAD, AND 50 YARDS ENE OF PAPER BOX
 JV5733'FACTORY.  STATION IS STANDARD DISK SET IN THE NW CORNER OF A
 JV5733'CONCRETE SIDEWALK WHICH RUNS ALONG THE NW SIDE OF AN OPEN
 JV5733'WOODEN SHED.
 JV5733'
 JV5733'REFERENCE MARK IS STANDARD DISK SET FARTHER BACK IN CONCRETE
 JV5733'SIDEWALK.
 JV5733
 JV5733                          STATION RECOVERY (1956)
 JV5733
 JV5733'RECOVERY NOTE BY US ARMY MAP SERVICE (NOW DMA) 1956
 JV5733'STATION AND CONCRETE PIER HAS BEEN WASHED OUT BY WATER.  THE
 JV5733'MARK CAN BE SEEN UNDER WATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7586 ***********************************************************************
 AC7586  DESIGNATION -  EAST
 AC7586  PID         -  AC7586
 AC7586  STATE/COUNTY-  MD/MONTGOMERY
 AC7586  COUNTRY     -  US
 AC7586  USGS QUAD   -  GAITHERSBURG (2016)
 AC7586
 AC7586                         *CURRENT SURVEY CONTROL
 AC7586  ______________________________________________________________________
 AC7586* NAD 83(1986) POSITION- 39 07 47.     (N) 077 12 51.     (W)   SCALED
 AC7586* NAVD 88 ORTHO HEIGHT -   136.376 (meters)      447.43  (feet) ADJUSTED
 AC7586  ______________________________________________________________________
 AC7586  GEOID HEIGHT    -        -31.737 (meters)                     GEOID18
 AC7586  DYNAMIC HEIGHT  -        136.305 (meters)      447.19  (feet) COMP
 AC7586  MODELED GRAVITY -    980,100.9   (mgal)                       NAVD 88
 AC7586
 AC7586  VERT ORDER      -  FIRST     CLASS II
 AC7586
 AC7586.The horizontal coordinates were scaled from a map and have
 AC7586.an estimated accuracy of +/- 6 seconds.
 AC7586
 AC7586.The orthometric height was determined by differential leveling and
 AC7586.adjusted by the NATIONAL GEODETIC SURVEY
 AC7586.in April 1999.
 AC7586
 AC7586.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7586.GEOID18 height accuracy estimate available here.
 AC7586
 AC7586.Click photographs - Photos may exist for this station.
 AC7586
 AC7586.The dynamic height is computed by dividing the NAVD 88
 AC7586.geopotential number by the normal gravity value computed on the
 AC7586.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7586.degrees latitude (g = 980.6199 gals.).
 AC7586
 AC7586.The modeled gravity was interpolated from observed gravity values.
 AC7586
 AC7586;                    North         East    Units  Estimated Accuracy
 AC7586;SPC MD       -   162,430.      381,480.      MT  (+/- 180 meters Scaled)
 AC7586
 AC7586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ086335(NAD 83)
 AC7586
 AC7586                          SUPERSEDED SURVEY CONTROL
 AC7586
 AC7586  NAVD 88 (04/11/97)  136.371  (m)          447.41   (f) SUPERSEDED  1 2
 AC7586
 AC7586.Superseded values are not recommended for survey control.
 AC7586
 AC7586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7586.See file dsdata.pdf to determine how the superseded data were derived.
 AC7586
 AC7586_MARKER: DD = SURVEY DISK
 AC7586_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 AC7586_STAMPING: EAST 1996
 AC7586_MARK LOGO: NGS
 AC7586_PROJECTION: FLUSH
 AC7586_MAGNETIC: P = MARKER IS A STEEL PIPE
 AC7586_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AC7586_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7586+SATELLITE: SATELLITE OBSERVATIONS - July 08, 1998
 AC7586_ROD/PIPE-DEPTH: 1.0 meters
 AC7586
 AC7586  HISTORY     - Date     Condition        Report By
 AC7586  HISTORY     - 1996     MONUMENTED       NGS
 AC7586  HISTORY     - 19980708 GOOD             NGS
 AC7586
 AC7586                          STATION DESCRIPTION
 AC7586
 AC7586'DESCRIBED BY NATIONAL GEODETIC SURVEY 1996 (RWA)
 AC7586'THE STATION IS LOCATED IN GAITHERSBURG, ON THE GROUNDS OF THE NATIONAL
 AC7586'INSTITUTE OF STANDARDS AND TECHNOLOGY (NIST) , ON THE HIGH GROUND
 AC7586'SOUTHWEST OF THE JUNCTION OF SOUTH DRIVE AND EAST DRIVE, ON A LINE
 AC7586'WITH THE SOUTH FACE OF BUILDING 245, RADIATION PHYSICS.
 AC7586'OWNERSHIP--U.S.  DEPARTMENT OF COMMERCE, NIST.  NIST AND NGS MUST BE
 AC7586'NOTIFIED PRIOR TO USING THIS MONUMENT.  TELEPHONE (301) 975-3500 FOR
 AC7586'NIST INQUIRES AND (301) 713-3194 FOR NGS INQUIRES. TO REACH THE
 AC7586'STATION FROM THE NORTH ENTRANCE TO NIST OFF CLOPPER ROAD, GO SOUTH FOR
 AC7586'0.15 MI (0.24 KM) THROUGH THE MAIN GATE TO A T-INTERSECTION WITH NORTH
 AC7586'DRIVE.  TURN LEFT AND GO EAST FOR 0.3 MI (0.5 KM) TO THE INTERSECTION
 AC7586'WITH EAST DRIVE.  TURN LEFT AND GO EAST AND SOUTH FOR 0.5 MI (0.8 KM)
 AC7586'TO THE T-INTERSECTION WITH SOUTH DRIVE ON THE RIGHT.  FROM THIS
 AC7586'INTERSECTION GO SOUTHWEST ACROSS THE LAWN FOR 0.1 MI (0.2 KM) TOWARD
 AC7586'THE CHIMNEY ON THE REACTOR BUILDING (THIS CHIMNEY IS THE SOUTH MOST
 AC7586'AND FARTHEST OF TWO ON THE HORIZON IN THIS DIRECTION) TO THE HIGH
 AC7586'GROUND AND THE STATION. THE STATION IS THE CENTER OF A 2-INCH SURVEY
 AC7586'DISK SET INTO THE TOP OF A 1-METER LONG FENO PIPE, RECESSED ABOUT
 AC7586'3-INCHES BELOW GROUND LEVEL AND ENCASED IN 5-INCH ROUND PVC PIPE WITH
 AC7586'A LOGO CAP SURROUNDED BY CONCRETE.  THE LOGO CAP AND CONCRETE ARE SET
 AC7586'FLUSH WITH THE SURFACE. THREE CIRCULAR ANCHOR PRONGS EXTEND FROM THE
 AC7586'BOTTOM OF THE PIPE. IT IS ABOUT 200.3 M (657.2 FT) SOUTHWEST OF THE
 AC7586'CENTER OF THE INTERSECTION OF SOUTH DRIVE AND EAST DRIVE, 210.5 M
 AC7586'(690.6 FT) NORTH OF A 14-INCH PINE TREE WHICH IS THE MOST EASTERLY
 AC7586'TREE IN A STAND SOUTH OF THE STATION, 107.2 M (351.7 FT) SOUTHEAST OF
 AC7586'A 20-INCH BLACK OAK TREE, 130.8 M (429.1 FT) NORTHEAST OF A 24-INCH
 AC7586'BLACK OAK TREE IN THE FENCE LINE, AND 101.4 M (332.7 FT) EAST OF THE
 AC7586'CORNER OF A NORTH-SOUTH, EAST-WEST, 6-FOOT HIGH CHAIN LINK FENCE.
 AC7586
 AC7586                          STATION RECOVERY (1998)
 AC7586
 AC7586'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 AC7586'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4823 ***********************************************************************
 JV4823  DESIGNATION -  EAST BASE 51 PP
 JV4823  PID         -  JV4823
 JV4823  STATE/COUNTY-  MD/HARFORD
 JV4823  COUNTRY     -  US
 JV4823  USGS QUAD   -  DELTA (2019)
 JV4823
 JV4823                         *CURRENT SURVEY CONTROL
 JV4823  ______________________________________________________________________
 JV4823* NAD 83(1991) POSITION- 39 43 11.48030(N) 076 20 29.89843(W)   ADJUSTED
 JV4823* NAVD 88 ORTHO HEIGHT -   145.8   (meters)      478.    (feet) VERTCON3
 JV4823  ______________________________________________________________________
 JV4823  GEOID HEIGHT    -        -32.787 (meters)                     GEOID18
 JV4823  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 JV4823  HORZ ORDER      -  THIRD
 JV4823
 JV4823.The horizontal coordinates were established by classical geodetic methods
 JV4823.and adjusted by the National Geodetic Survey in January 1992.
 JV4823
 JV4823.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4823.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4823
 JV4823.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4823.GEOID18 height accuracy estimate available here.
 JV4823
 JV4823.Click photographs - Photos may exist for this station.
 JV4823
 JV4823.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4823
 JV4823. The following values were computed from the NAD 83(1991) position.
 JV4823
 JV4823;                    North         East     Units Scale Factor Converg.
 JV4823;SPC MD       -   228,129.211   456,451.908   MT  1.00005836   +0 24 47.6
 JV4823;SPC MD       -   748,453.92  1,497,542.63   sFT  1.00005836   +0 24 47.6
 JV4823;SPC PA S     -    43,880.632   720,755.192   MT  1.00004024   +0 54 49.4
 JV4823;SPC PA S     -   143,965.04  2,364,677.66   sFT  1.00004024   +0 54 49.4
 JV4823;UTM  18      - 4,397,525.112   385,009.571   MT  0.99976279   -0 51 26.8
 JV4823
 JV4823!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4823!SPC MD       -   0.99998228  x   1.00005836  =   1.00004064
 JV4823!SPC PA S     -   0.99998228  x   1.00004024  =   1.00002252
 JV4823!UTM  18      -   0.99998228  x   0.99976279  =   0.99974507
 JV4823
 JV4823:                Primary Azimuth Mark                     Grid Az
 JV4823:SPC MD       -  WHITEFORD                                151 05 13.9
 JV4823:SPC PA S     -  WHITEFORD                                150 35 12.1
 JV4823:UTM  18      -  WHITEFORD                                152 21 28.3
 JV4823
 JV4823_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8500997525(NAD 83)
 JV4823
 JV4823|---------------------------------------------------------------------|
 JV4823| PID    Reference Object                     Distance      Geod. Az  |
 JV4823|                                                           dddmmss.s |
 JV4823| JV4824 WHITEFORD                           APPROX. 1.3 KM 1513001.5 |
 JV4823| JV4822 STAKE 8 SETUP 1947                  260.916 METERS 24027     |
 JV4823|---------------------------------------------------------------------|
 JV4823
 JV4823                          SUPERSEDED SURVEY CONTROL
 JV4823
 JV4823  NAD 83(1986)-  39 43 11.47449(N)    076 20 29.90244(W) AD(       ) 3
 JV4823  NAD 27      -  39 43 11.09700(N)    076 20 31.04800(W) AD(       ) 3
 JV4823  NGVD 29 (07/19/86)  146.0    (m)          479.     (f) VERT ANG       
 JV4823
 JV4823.Superseded values are not recommended for survey control.
 JV4823
 JV4823.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4823.See file dsdata.pdf to determine how the superseded data were derived.
 JV4823
 JV4823_MARKER: DD = SURVEY DISK
 JV4823_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4823_STAMPING: 2ND 0 TRL. STA. EAST BASE 1940
 JV4823_MARK LOGO: USACE
 JV4823_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4823+STABILITY: SURFACE MOTION
 JV4823
 JV4823  HISTORY     - Date     Condition        Report By
 JV4823  HISTORY     - 1947     MONUMENTED       USACE
 JV4823
 JV4823                          STATION DESCRIPTION
 JV4823
 JV4823'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1947 (MJT)
 JV4823'THIS IS A TRAVERSE STATION.
 JV4823'
 JV4823'THE STATION IS LOCATED ABOUT 0.32 MILES WEST OF CARDIFF STATION,
 JV4823'ALONG MACADAM ROAD.  STATION IS IN PROLONGATION WITH WEST SIDE OF
 JV4823'A SIDE ROAD, 10 FEET NORTH OF CENTERLINE OF MAIN ROAD, 35 FEET
 JV4823'NORTHEAST OF POWER POLE 212.  MARK IS A STANDARD U.S. ENGINEERS
 JV4823'DISK, STAMPED 2ND 0. TRL. STA. EAST BASE 1940 SET IN TOP OF A
 JV4823'CONCRETE POST, FLUSH WITH THE SURFACE OF THE GROUND.
 JV4823'
 JV4823'TO REACH STATION FROM CARDIFF RAILROAD STATION GO 0.32 MILES
 JV4823'ALONG MACADAM ROAD, ACROSS NARROW BRIDGE TO STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6628 ***********************************************************************
 HV6628  DESIGNATION -  EAST END 1901
 HV6628  PID         -  HV6628
 HV6628  STATE/COUNTY-  MD/DORCHESTER
 HV6628  COUNTRY     -  US
 HV6628  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV6628
 HV6628                         *CURRENT SURVEY CONTROL
 HV6628  ______________________________________________________________________
 HV6628* NAD 83(1991) POSITION- 38 28 10.15591(N) 076 17 21.82631(W)   ADJUSTED
 HV6628* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6628  ______________________________________________________________________
 HV6628  GEOID HEIGHT    -        -34.641 (meters)                     GEOID18
 HV6628  LAPLACE CORR    -         -5.33  (seconds)                    DEFLEC18
 HV6628  HORZ ORDER      -  THIRD
 HV6628
 HV6628.The horizontal coordinates were established by classical geodetic methods
 HV6628.and adjusted by the National Geodetic Survey in January 1992.
 HV6628
 HV6628.The orthometric height was scaled from a topographic map.
 HV6628
 HV6628.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6628.GEOID18 height accuracy estimate available here.
 HV6628
 HV6628.Click photographs - Photos may exist for this station.
 HV6628
 HV6628.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6628
 HV6628. The following values were computed from the NAD 83(1991) position.
 HV6628
 HV6628;                    North         East     Units Scale Factor Converg.
 HV6628;SPC MD       -    89,357.740   462,011.890   MT  0.99997484   +0 26 45.6
 HV6628;SPC MD       -   293,167.85  1,515,784.01   sFT  0.99997484   +0 26 45.6
 HV6628;UTM  18      - 4,258,695.189   387,517.810   MT  0.99975581   -0 48 08.0
 HV6628
 HV6628!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6628!SPC MD       -   1.00000547  x   0.99997484  =   0.99998031
 HV6628!UTM  18      -   1.00000547  x   0.99975581  =   0.99976128
 HV6628
 HV6628_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8751758695(NAD 83)
 HV6628
 HV6628|---------------------------------------------------------------------|
 HV6628| PID    Reference Object                     Distance      Geod. Az  |
 HV6628|                                                           dddmmss.s |
 HV6628| HV6626 WEST END                            360.211 METERS 28301     |
 HV6628|---------------------------------------------------------------------|
 HV6628
 HV6628                          SUPERSEDED SURVEY CONTROL
 HV6628
 HV6628  NAD 83(1986)-  38 28 10.15406(N)    076 17 21.84214(W) AD(       ) 3
 HV6628  NAD 27      -  38 28 09.73100(N)    076 17 22.99600(W) AD(       ) 3
 HV6628  USSD        -  38 28 10.10300(N)    076 17 22.78000(W) AD(       ) 3
 HV6628
 HV6628.Superseded values are not recommended for survey control.
 HV6628
 HV6628.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6628.See file dsdata.pdf to determine how the superseded data were derived.
 HV6628
 HV6628
 HV6628  HISTORY     - Date     Condition        Report By
 HV6628  HISTORY     - 1901     MONUMENTED       CGS
 HV6628  HISTORY     - 1908     SEE DESCRIPTION  CGS
 HV6628  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6628
 HV6628                          STATION DESCRIPTION
 HV6628
 HV6628'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV6628'ON E SIDE OF SLAUGHTER CREEK, S OF E END OF TAYLOR ISLAND BRIDGE,
 HV6628'ON MARSHY POINT 50 METERS FROM THE S LINE OF BRIDGE AT HIGH-WATER
 HV6628'MARK.  MARKED BY A CEDAR STUB.
 HV6628
 HV6628                          STATION RECOVERY (1942)
 HV6628
 HV6628'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6628'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE HOUR,
 HV6628'BUT NO TRACE OF THE STATION COULD BE FOUND.  IT IS RECOMMENDED
 HV6628'THAT THIS STATION BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6935 ***********************************************************************
 JV6935  DESIGNATION -  EAST PT
 JV6935  PID         -  JV6935
 JV6935  STATE/COUNTY-  MD/C OF BALTIMORE
 JV6935  COUNTRY     -  US
 JV6935  USGS QUAD   -  BALTIMORE EAST (2016)
 JV6935
 JV6935                         *CURRENT SURVEY CONTROL
 JV6935  ______________________________________________________________________
 JV6935* NAD 83(2011) POSITION- 39 17 39.76071(N) 076 31 52.73125(W)   ADJUSTED
 JV6935* NAD 83(2011) ELLIP HT-    -0.334 (meters)        (06/27/12)   ADJUSTED
 JV6935* NAD 83(2011) EPOCH   -  2010.00
 JV6935* NAVD 88 ORTHO HEIGHT -    32.572 (meters)      106.86  (feet) ADJUSTED
 JV6935  ______________________________________________________________________
 JV6935  GEOID HEIGHT    -        -32.903 (meters)                     GEOID18
 JV6935  NAD 83(2011) X  -  1,151,222.311 (meters)                     COMP
 JV6935  NAD 83(2011) Y  - -4,806,757.740 (meters)                     COMP
 JV6935  NAD 83(2011) Z  -  4,017,662.035 (meters)                     COMP
 JV6935  LAPLACE CORR    -         -3.49  (seconds)                    DEFLEC18
 JV6935  DYNAMIC HEIGHT  -         32.555 (meters)      106.81  (feet) COMP
 JV6935  MODELED GRAVITY -    980,100.2   (mgal)                       NAVD 88
 JV6935
 JV6935  VERT ORDER      -  SECOND    CLASS I
 JV6935
 JV6935  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6935  Standards:
 JV6935         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6935            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6935  -------------------------------------------------------------------
 JV6935  NETWORK    0.52   0.86           0.23   0.19   0.44      0.09959532
 JV6935  -------------------------------------------------------------------
 JV6935  Click here for local accuracies and other accuracy information.
 JV6935
 JV6935.The horizontal coordinates were established by GPS observations
 JV6935.and adjusted by the National Geodetic Survey in June 2012.
 JV6935
 JV6935.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6935.been affixed to the stable North American tectonic plate. See 
 JV6935.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6935
 JV6935.The horizontal coordinates are valid at the epoch date displayed above
 JV6935.which is a decimal equivalence of Year/Month/Day.
 JV6935
 JV6935.The orthometric height was determined by differential leveling and
 JV6935.adjusted by the NATIONAL GEODETIC SURVEY
 JV6935.in June 1995.
 JV6935
 JV6935.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6935.GEOID18 height accuracy estimate available here.
 JV6935
 JV6935.Click photographs - Photos may exist for this station.
 JV6935
 JV6935.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6935
 JV6935.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6935
 JV6935.The ellipsoidal height was determined by GPS observations
 JV6935.and is referenced to NAD 83.
 JV6935
 JV6935.The dynamic height is computed by dividing the NAVD 88
 JV6935.geopotential number by the normal gravity value computed on the
 JV6935.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6935.degrees latitude (g = 980.6199 gals.).
 JV6935
 JV6935.The modeled gravity was interpolated from observed gravity values.
 JV6935
 JV6935. The following values were computed from the NAD 83(2011) position.
 JV6935
 JV6935;                    North         East     Units Scale Factor Converg.
 JV6935;SPC MD       -   180,790.099   440,430.660   MT  0.99997648   +0 17 39.0
 JV6935;SPC MD       -   593,142.18  1,444,979.59   sFT  0.99997648   +0 17 39.0
 JV6935;UTM  18      - 4,350,562.547   367,948.874   MT  0.99981470   -0 58 11.7
 JV6935
 JV6935!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6935!SPC MD       -   1.00000005  x   0.99997648  =   0.99997653
 JV6935!UTM  18      -   1.00000005  x   0.99981470  =   0.99981475
 JV6935
 JV6935_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6794850562(NAD 83)
 JV6935
 JV6935                          SUPERSEDED SURVEY CONTROL
 JV6935
 JV6935  NAD 83(2007)-  39 17 39.76097(N)    076 31 52.73202(W) AD(2002.00) 0
 JV6935  ELLIP H (02/10/07)   -0.317  (m)                       GP(2002.00)    
 JV6935  ELLIP H (08/30/02)   -0.298  (m)                       GP(       ) 4 2
 JV6935  NAD 83(1991)-  39 17 39.76080(N)    076 31 52.73142(W) AD(       ) 1
 JV6935  ELLIP H (09/15/92)   -0.388  (m)                       GP(       ) 4 1
 JV6935  NAVD 88              32.57   (m)          106.9    (f) LEVELING    3  
 JV6935  NAVD 88 (04/08/97)   32.6    (m)  GEOID93  model used  GPS OBS        
 JV6935  NGVD 29 (09/15/92)   32.9    (m)  GEOID90  model used  GPS OBS        
 JV6935
 JV6935.Superseded values are not recommended for survey control.
 JV6935
 JV6935.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6935.See file dsdata.pdf to determine how the superseded data were derived.
 JV6935
 JV6935_MARKER: DD = SURVEY DISK
 JV6935_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6935_STAMPING: EAST PT. 1991
 JV6935_MARK LOGO: MDSHA
 JV6935_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6935_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6935+STABILITY: SURFACE MOTION
 JV6935_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6935+SATELLITE: SATELLITE OBSERVATIONS - February 16, 2007
 JV6935
 JV6935  HISTORY     - Date     Condition        Report By
 JV6935  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6935  HISTORY     - 19950205 GOOD             MCCRON
 JV6935  HISTORY     - 19990401 GOOD             AMTHOM
 JV6935  HISTORY     - 20010410 GOOD             DMW
 JV6935  HISTORY     - 20020719 GOOD             WR
 JV6935  HISTORY     - 20070216 GOOD             INDIV
 JV6935
 JV6935                          STATION DESCRIPTION
 JV6935
 JV6935'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6935'THE MARKER IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTHEAST OF BALTIMORE,
 JV6935'3.0 MI (4.8 KM) SOUTHWEST OF ESSEX, AND ALONG THE NORTHBOUND LANE OF
 JV6935'INTERSTATE HIGHWAY 95.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE
 JV6935'MARKER FROM A POINT WHERE STATE HIGHWAY 150 CROSSES OVER INTERSTATE
 JV6935'HIGHWAY 95, GO NORTH ON INTERSTATE HIGHWAY 95 FOR 0.5 MI (0.8 KM) TO
 JV6935'THE MARKER ON THE RIGHT.  THE POINT IS MARKED WITH A MARYLAND STATE
 JV6935'HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M)
 JV6935'ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE
 JV6935'GROUND.  IT IS 5.5 FT (1.7 M) SOUTHEAST OF THE SOUTHEAST EDGE OF THE
 JV6935'MOST SOUTHEAST PAVED SHOULDER ALONG THE NORTHBOUND LANE OF INTERSTATE
 JV6935'HIGHWAY 95, 15.3 FT (4.7 M) WEST-NORTHWEST OF A 6-FOOT HIGH CHAIN
 JV6935'LINK FENCE AND 76.0 FT (23.2 M) SOUTH-SOUTHEAST OF A POINT WHERE THE
 JV6935'FENCE MEETS THE SOUTHEAST CORNER OF THE INTERSTATE HIGHWAY 95 BRIDGE
 JV6935'OVER KANE STREET.
 JV6935
 JV6935                          STATION RECOVERY (1995)
 JV6935
 JV6935'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6935'RECOVERED AS DESCRIBED.
 JV6935
 JV6935                          STATION RECOVERY (1999)
 JV6935
 JV6935'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 1999
 JV6935'RECOVERED AS DESCRIBED.
 JV6935
 JV6935                          STATION RECOVERY (2001)
 JV6935
 JV6935'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV6935'RECOVERED IN GOOD CONDITION.
 JV6935
 JV6935                          STATION RECOVERY (2002)
 JV6935
 JV6935'RECOVERY NOTE BY WHITMAN, REQUARDT & ASSOCIATES 2002 (RTD)
 JV6935'RECOVERED IN GOOD CONDITION.
 JV6935
 JV6935                          STATION RECOVERY (2007)
 JV6935
 JV6935'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (WRA)
 JV6935'BRASS TOP IS IN ROUGH CONDITION
 JV6935'RECOVERED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0431 ***********************************************************************
 HU0431  DESIGNATION -  EAST SCHOOL
 HU0431  PID         -  HU0431
 HU0431  STATE/COUNTY-  MD/WICOMICO
 HU0431  COUNTRY     -  US
 HU0431  USGS QUAD   -  DELMAR (2016)
 HU0431
 HU0431                         *CURRENT SURVEY CONTROL
 HU0431  ______________________________________________________________________
 HU0431* NAD 83(2011) POSITION- 38 22 29.26668(N) 075 34 31.28210(W)   NO CHECK
 HU0431* NAD 83(2011) ELLIP HT-   -24.494 (meters)        (06/27/12)   NO CHECK
 HU0431* NAD 83(2011) EPOCH   -  2010.00
 HU0431* NAVD 88 ORTHO HEIGHT -    11.336 (meters)       37.19  (feet) ADJUSTED
 HU0431  ______________________________________________________________________
 HU0431  GEOID HEIGHT    -        -35.820 (meters)                     GEOID18
 HU0431  NAD 83(2011) X  -  1,247,198.882 (meters)                     COMP
 HU0431  NAD 83(2011) Y  - -4,848,859.714 (meters)                     COMP
 HU0431  NAD 83(2011) Z  -  3,938,127.893 (meters)                     COMP
 HU0431  LAPLACE CORR    -         -1.19  (seconds)                    DEFLEC18
 HU0431  DYNAMIC HEIGHT  -         11.328 (meters)       37.17  (feet) COMP
 HU0431  MODELED GRAVITY -    980,006.3   (mgal)                       NAVD 88
 HU0431
 HU0431  VERT ORDER      -  FIRST     CLASS I
 HU0431
 HU0431  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0431  Standards:
 HU0431         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0431            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0431  -------------------------------------------------------------------
 HU0431  NETWORK    1.05   1.22           0.32   0.50   0.62     -0.02464365
 HU0431  -------------------------------------------------------------------
 HU0431  Click here for local accuracies and other accuracy information.
 HU0431
 HU0431.The horizontal coordinates were established by GPS observations
 HU0431.and adjusted by the National Geodetic Survey in June 2012.
 HU0431
 HU0431.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0431.been affixed to the stable North American tectonic plate. See 
 HU0431.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0431
 HU0431.The horizontal coordinates are valid at the epoch date displayed above
 HU0431.which is a decimal equivalence of Year/Month/Day.
 HU0431
 HU0431.No horizontal observational check was made to the station.
 HU0431
 HU0431.The orthometric height was determined by differential leveling and
 HU0431.adjusted by the NATIONAL GEODETIC SURVEY
 HU0431.in June 1991.
 HU0431
 HU0431.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0431.GEOID18 height accuracy estimate available here.
 HU0431
 HU0431.Click photographs - Photos may exist for this station.
 HU0431
 HU0431.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0431
 HU0431.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0431
 HU0431.The ellipsoidal height was determined by GPS observations
 HU0431.and is referenced to NAD 83.
 HU0431
 HU0431.The dynamic height is computed by dividing the NAVD 88
 HU0431.geopotential number by the normal gravity value computed on the
 HU0431.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0431.degrees latitude (g = 980.6199 gals.).
 HU0431
 HU0431.The modeled gravity was interpolated from observed gravity values.
 HU0431
 HU0431. The following values were computed from the NAD 83(2011) position.
 HU0431
 HU0431;                    North         East     Units Scale Factor Converg.
 HU0431;SPC MD       -    79,576.772   524,483.887   MT  0.99998783   +0 53 39.0
 HU0431;SPC MD       -   261,078.13  1,720,744.22   sFT  0.99998783   +0 53 39.0
 HU0431;UTM  18      - 4,247,557.432   449,743.246   MT  0.99963110   -0 21 25.9
 HU0431
 HU0431!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0431!SPC MD       -   1.00000384  x   0.99998783  =   0.99999167
 HU0431!UTM  18      -   1.00000384  x   0.99963110  =   0.99963494
 HU0431
 HU0431:                Primary Azimuth Mark                     Grid Az
 HU0431:SPC MD       -  SALISBURY COURTHOUSE SPIRE               244 19 58.9
 HU0431:UTM  18      -  SALISBURY COURTHOUSE SPIRE               245 35 03.8
 HU0431
 HU0431_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4974347557(NAD 83)
 HU0431
 HU0431|---------------------------------------------------------------------|
 HU0431| PID    Reference Object                     Distance      Geod. Az  |
 HU0431|                                                           dddmmss.s |
 HU0431| HU0432 EAST SCHOOL RM 1                     25.759 METERS 06709     |
 HU0431| HU0430 EAST SCHOOL RM 2                     23.639 METERS 17929     |
 HU0431| HU0433 EAST SCHOOL AZ MK                   333.134 METERS 18030     |
 HU0431| HU1244 TEX                                 203.808 METERS 20241     |
 HU0431| HU1764 SALISBURY COURTHOUSE SPIRE          APPROX. 2.4 KM 2451337.9 |
 HU0431| HU1241 SALISBURY C P TEL TOWER             APPROX. 1.2 KM 2893255.5 |
 HU0431| HU1706 SALISBURY NORTH MUNICIPAL TANK      APPROX. 1.4 KM 3081410.2 |
 HU0431| HU1242 SALISBURY WCPB TV MAST              APPROX. 1.8 KM 3112802.9 |
 HU0431| HU1708 SALISBURY RADIO WBOC NW MAST        APPROX. 1.2 KM 3410308.1 |
 HU0431|---------------------------------------------------------------------|
 HU0431
 HU0431                          SUPERSEDED SURVEY CONTROL
 HU0431
 HU0431  NAD 83(2007)-  38 22 29.26694(N)    075 34 31.28295(W) AD(2002.00) 0
 HU0431  ELLIP H (02/10/07)  -24.461  (m)                       GP(2002.00)    
 HU0431  ELLIP H (10/28/02)  -24.455  (m)                       GP(       ) 4 2
 HU0431  NAD 83(1991)-  38 22 29.26711(N)    075 34 31.28333(W) AD(       ) 1
 HU0431  ELLIP H (10/08/97)  -24.467  (m)                       GP(       ) 4 2
 HU0431  NAD 83(1991)-  38 22 29.26710(N)    075 34 31.28242(W) AD(       ) 2
 HU0431  NAD 83(1986)-  38 22 29.25900(N)    075 34 31.30752(W) AD(       ) 2
 HU0431  NAD 27      -  38 22 28.84300(N)    075 34 32.57700(W) AD(       ) 2
 HU0431  NAVD 88              11.34   (m)           37.2    (f) LEVELING    3  
 HU0431  NGVD 29 (06/12/91)   11.590  (m)           38.02   (f) ADJUSTED    1 1
 HU0431  NGVD 29 (??/??/87)   11.590  (m)           38.02   (f) SUPERSEDED  1 1
 HU0431  NGVD 29              11.59   (m)           38.0    (f) LEVELING    3  
 HU0431
 HU0431.Superseded values are not recommended for survey control.
 HU0431
 HU0431.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0431.See file dsdata.pdf to determine how the superseded data were derived.
 HU0431
 HU0431_MARKER: DS = TRIANGULATION STATION DISK
 HU0431_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0431_STAMPING: EAST SCHOOL 1956
 HU0431_MARK LOGO: CGS
 HU0431_PROJECTION: FLUSH
 HU0431_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU0431_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0431+STABILITY: SURFACE MOTION
 HU0431_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0431+SATELLITE: SATELLITE OBSERVATIONS - August 26, 2019
 HU0431
 HU0431  HISTORY     - Date     Condition        Report By
 HU0431  HISTORY     - 1956     MONUMENTED       CGS
 HU0431  HISTORY     - 1963     GOOD             CGS
 HU0431  HISTORY     - 1967     GOOD             CGS
 HU0431  HISTORY     - 1983     GOOD             LOCENG
 HU0431  HISTORY     - 1985     GOOD             MDSHA
 HU0431  HISTORY     - 19891129 GOOD             NGS
 HU0431  HISTORY     - 19960922 GOOD             NGS
 HU0431  HISTORY     - 20050908 GOOD             GEOCAC
 HU0431  HISTORY     - 20190426 GOOD             PROFLN
 HU0431  HISTORY     - 20190826 GOOD             MDSHA
 HU0431
 HU0431                          STATION DESCRIPTION
 HU0431
 HU0431'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (WFD)
 HU0431'THE STATION IS LOCATED IN THE NORTHWEST CORNER OF THE EAST SCHOOL
 HU0431'PLAYGROUND, ABOUT 1-1/2 MILES EAST-NORTHEAST OF THE CENTER OF
 HU0431'SALISBURY, 0.1 MILE NORTH OF U.S. HIGHWAY 50, 225 FEET NORTHWEST
 HU0431'OF THE NORTHWEST CORNER OF THE SCHOOLHOUSE, 69 FEET SOUTH OF THE
 HU0431'SOUTH RAIL OF A RAILROAD TRACK, 54 FEET SOUTHEAST OF A POWERLINE
 HU0431'POLE, 28 FEET EAST OF THE CENTER OF A STREET AND 3 FEET SOUTH OF
 HU0431'A 4 IN X 4 IN WHITE WITNESS POST.
 HU0431'
 HU0431'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 HU0431'STAMPED EAST SCHOOL 1956.
 HU0431'
 HU0431'REFERENCE MARK 1 IS 52 FEET SOUTH OF THE SOUTH RAIL OF THE
 HU0431'RAILROAD TRACK.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK
 HU0431'IS STAMPED EAST SCHOOL NO 1 1956.
 HU0431'
 HU0431'REFERENCE MARK 2 IS 21 FEET EAST OF THE CENTER OF THE STREET.  THE
 HU0431'MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED EAST SCHOOL
 HU0431'NO 2 1956.
 HU0431'
 HU0431'THE AZIMUTH MARK IS 32 FEET SOUTHWEST OF THE CENTER OF A CROSS
 HU0431'STREET, 6 FEET SOUTHEAST OF A POWERLINE POLE AND 4 FEET SOUTHEAST
 HU0431'OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK IS FLUSH WITH THE
 HU0431'GROUND, AND THE DISK IS STAMPED EAST SCHOOL 1956.  TO REACH THE
 HU0431'AZIMUTH MARK FROM THE STATION, GO SOUTH FOR 0.1 MILE TO U.S.
 HU0431'HIGHWAY 50, CONTINUE SOUTH, CROSSING THE HIGHWAY, FOR 0.1 MILE
 HU0431'TO THE MARK ON THE RIGHT.
 HU0431'
 HU0431'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HU0431
 HU0431                          STATION RECOVERY (1963)
 HU0431
 HU0431'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963
 HU0431'1.2 MI E FROM SALISBURY.
 HU0431'1.25 MILES EAST ALONG MAIN STREET FROM THE OVERPASS OF THE
 HU0431'PENNSYLVANIA RAILROAD OVER MAIN STREET AT SALISBURY, AT EAST
 HU0431'SCHOOL, IN THE NORTHWEST CORNER OF THE PLAYGROUND, 231 FEET
 HU0431'NORTHWEST OF NORTHWEST CORNER OF THE SCHOOL, 69.8 FEET SOUTH OF
 HU0431'SOUTH RAIL OF A RAILROAD TRACK, 54.6 FEET SOUTH-SOUTHWEST OF A
 HU0431'6-FOOT HIGH METAL WHISTLE POST, 54 1/2 FEET SOUTHEAST OF POWER
 HU0431'POLE 3G, 23 FEET EAST OF APPROXIMATE CENTER OF A DIRT ROAD ALONG
 HU0431'WEST SIDE OF PLAYGROUND LEADING NORTH AND DEAD ENDS AT TRACK,
 HU0431'AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH GROUND.
 HU0431
 HU0431                          STATION RECOVERY (1967)
 HU0431
 HU0431'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JCB)
 HU0431'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO
 HU0431'BE IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION IS ADEQUATE.
 HU0431'
 HU0431'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU0431'AT SALISBURY.
 HU0431
 HU0431                          STATION RECOVERY (1983)
 HU0431
 HU0431'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (MA)
 HU0431'EAST SCHOOL 1956 RECOVERED AS DESCRIBED IN GOOD CONDITION.
 HU0431
 HU0431                          STATION RECOVERY (1985)
 HU0431
 HU0431'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1985 (RGP)
 HU0431'THE STATION MARK, REFERENCE MARK ONE, REFERENCE MARK TWO, AND THE
 HU0431'AZIMUTH MARK WERE RECOVERED AND FOUND IN GOOD CONDITION.  A DIFFERENCE
 HU0431'IN DIRECTION OF MINUS 2 MINUTES 54 SECONDS AND DISTANCE OF MINUS 0.015
 HU0431'METERS (0.05 FT) WAS NOTED AND VERIFIED TO REFERENCE MARK ONE.  A
 HU0431'DIFFERENCE IN DIRECTION OF PLUS 1 MINUTE 12 SECONDS AND DISTANCE OF
 HU0431'MINUS 0.005 METERS (0.02 FT) WAS NOTED AND VERIFIED TO REFERENCE MARK
 HU0431'TWO.
 HU0431'
 HU0431'A COMPLETE NEW DESCRIPTION OF THIS STATION FOLLOWS.
 HU0431'
 HU0431'THE STATION IS LOCATED ABOUT IN SALISBURY, AT THE NORTHEAST CORNER OF
 HU0431'THE EAST SCHOOL PLAYGROUND.  --WICOMICO COUNTY BOARD OF EDUCATION--.
 HU0431'
 HU0431'TO REACH THE STATION FROM THE INTERSECTION OF US HIGHWAY 50 AND 13
 HU0431'BUSINESS AT SALISBURY, GO SOUTH ON US HIGHWAY 13 BUSINESS ROUTE FOR
 HU0431'0.2 KM (0.3 MI ) TO A CROSSROADS.  TURN LEFT AND GO EAST ON EAST MAIN
 HU0431'STREET FOR 2.1 KM (1.3 MI ) TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 HU0431'NORTH ON A DRIVEWAY AND ACROSS A PLAYGROUND FOR 0.15 KM (0.1 MI) TO
 HU0431'THE STATION.
 HU0431'
 HU0431'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 HU0431'STAMPED ---EAST SCHOOL 1956--- SET INTO THE TOP OF A ROUND CONCRETE
 HU0431'MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND LOCATED
 HU0431'70.0 METERS (229.5 FEET) NW FROM THE NORTHWEST CORNER OF THE MAIN
 HU0431'SCHOOL BUILDING, 21.3 METERS (69.8 FEET) S FROM THE SOUTH RAIL OF A
 HU0431'RAILROAD, 16.5 METERS (54.1 FEET) SE FROM A POWERLINE POLE NUMBERED
 HU0431'47538-93480, 33.8 METERS (110.9 FEET) N FROM AN 18 IN MAPLE TREE,
 HU0431'AND, 16.3 METERS (53.5 FEET) SE FROM A WITNESS POST, AND 16.3 METERS
 HU0431'(53.5 FEET) SE FROM A WITNESS POST.
 HU0431'
 HU0431'REFERENCE MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HU0431'NOS) DISK STAMPED ---EAST SCHOOL NO 1 1956--- SET INTO THE TOP OF A
 HU0431'ROUND CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE
 HU0431'GROUND LOCATED 66.4 METERS (218.0 FEET) NW FROM THE NORTHWEST CORNER
 HU0431'OF THE MAIN SCHOOL BUILDING, 15.9 METERS (52.1 FEET) S FROM THE
 HU0431'SOUTH RAIL OF THE RAILROAD, 37.8 METERS (124.1 FEET) ESE FROM THE
 HU0431'POWERLINE POLE NUMBERED 47538-93480, AND 37.6 METERS (123.4 FEET)
 HU0431'ESE FROM THE WITNESS POST.  MARK IS LEVEL WITH THE STATION.
 HU0431'
 HU0431'REFERENCE MARK NO. 2 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HU0431'NOS) DISK STAMPED ---EAST SCHOOL NO 2 1956--- SET INTO THE TOP OF A
 HU0431'ROUND CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE
 HU0431'GROUND LOCATED 54.3 METERS (178.0 FEET) NNW FROM THE NORTHWEST CORNER
 HU0431'OF THE MAIN SCHOOL BUILDING, 10.2 METERS (33.5 FEET) N FROM THE 18
 HU0431'IN MAPLE TREE, 35.5 METERS (116.6 FEET) SSE FROM THE POWERLINE POLE
 HU0431'NUMBERED 47538-93480, AND 44.5 METERS (146.0 FEET) S FROM THE SOUTH
 HU0431'RAIL OF THE RAILROAD.  MARK IS LEVEL WITH THE STATION.
 HU0431'
 HU0431'AZIMUTH MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HU0431'NOS) DISK STAMPED ---EAST SCHOOL 1956--- SET INTO THE TOP OF A ROUND
 HU0431'CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND
 HU0431'LOCATED 7.7 METERS (25.3 FEET) S FROM THE CENTERLINE OF WHITE
 HU0431'STREET, 5.3 METERS (17.4 FEET) W FROM THE CENTERLINE OF CENTENARY
 HU0431'DRIVE, 10.4 METERS (34.2 FEET) ENE FROM THE NORTHEAST CORNER OF A
 HU0431'HOUSE, AND, 1.8 METERS (5.8 FEET) SE FROM A POWERLINE POLE NUMBERED
 HU0431'47542-93369, AND 1.8 METERS (5.8 FEET) SE FROM A POWERLINE POLE
 HU0431'NUMBERED 47542-93369.
 HU0431'
 HU0431'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTH ACROSS THE
 HU0431'PLAYGROUND AND ON A DRIVEWAY FOR 0.15 KM (0.1 MI) TO A TEE
 HU0431'INTERSECTION.  TURN RIGHT AND GO WEST ON EAST MAIN STREET FOR 0.05 KM
 HU0431'(0.05 MI) TO A SIDE ROAD L.  TURN LEFT AND GO SOUTH ON CENTENARY
 HU0431'DRIVE FOR 0.15 KM (0.05 MI) TO THE MARK ON THE RIGHT.
 HU0431'
 HU0431'THIS STATION IS SUITABLE FOR GPS.
 HU0431'
 HU0431'DESCRIBED BY M. R. ARCHER-SHEE.
 HU0431
 HU0431                          STATION RECOVERY (1989)
 HU0431
 HU0431'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU0431'IN SALISBURY, AT THE SALISBURY EAST SCHOOL, NEAR THE NORTH EDGE OF THE
 HU0431'SCHOOL YARD, 67.5 M (221.46 FT) NORTH OF THE NORTHWEST CORNER OF THE
 HU0431'MOST WESTERLY 1 OF 3 SCHOOL BUILDINGS, 21.0 M (68.90 FT) SOUTH OF THE
 HU0431'NEAR RAIL OF THE CONRAIL RAILROAD, 16.6 M (54.46 FT) SOUTHEAST OF
 HU0431'UTILITY POLE NUMBER 47538 93480, 12.3 M (40.35 FT) SOUTH OF A FENCE,
 HU0431'AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU0431
 HU0431                          STATION RECOVERY (1996)
 HU0431
 HU0431'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 HU0431'THE STATION IS LOCATED IN THE EAST PART OF SALISBURY, AT THE EAST
 HU0431'ELEMENTARY SCHOOL AND IN THE NORTH PART OF THE PLAYGROUND.
 HU0431'OWNERSHIP--WICOMICO COUNTY BOARD OF EDUCATION, SCHOOL PRINCIPAL LESLEY
 HU0431'HUGHES, PHONE (410) 749-3488. TO REACH THE STATION FROM THE JUNCTION
 HU0431'OF US HIGHWAY 50 AND 13 BUSINESS ROUTE IN SALISBURY, GO SOUTH ON US
 HU0431'HIGHWAY 13 BUSINESS ROUTE FOR 0.2 MI (0.3 KM) TO A INTERSECTION, TURN
 HU0431'LEFT AND GO WESTERLY ON MAIN STREET FOR 1.3 MI (2.1 KM) (CROSSING US
 HU0431'HIGHWAY 50) TO A PARKING LOT FOR THE SCHOOL ON THE LEFT, TURN LEFT AND
 HU0431'GO NORTH ACROSS THE PARKING LOT AND THEN THE GRASS PLAYGROUND FOR 0.1
 HU0431'MI (0.2 KM) TO THE STATION. THE STATION IS FLUSH WITH THE GROUND,
 HU0431'229.5 FT (70.0 M) NORTHWEST OF THE NORTHWEST CORNER OF THE SCHOOL
 HU0431'BUILDING, 110.9 FT (33.8 M) NORTH OF A TREE, 69.8 FT (21.3 M) SOUTH OF
 HU0431'THE SOUTH RAIL OF A RAILROAD, 54.1 FT (16.5 M) SOUTHEAST OF A
 HU0431'POWERLINE POLE (47538-93480) AND 53.5 FT (16.3 M) SOUTHEAST OF A
 HU0431'WITNESS POST.
 HU0431
 HU0431                          STATION RECOVERY (2005)
 HU0431
 HU0431'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0431'RECOVERED IN GOOD CONDITION.
 HU0431
 HU0431                          STATION RECOVERY (2019)
 HU0431
 HU0431'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU0431'RECOVERED THE MAIN STATION AND BOTH RMS, ALL FLUSH WITH THE GROUND.
 HU0431'THE MARKS ARE IN THE GRASS AREA NORTH OF THE 1-STORY BRICK ADDITION
 HU0431'THAT IS ON THE WEST SIDE OF THE MAIN SCHOOL BUILDING.  TO CHECK
 HU0431'RESTRICTIONS ON ACCESS, CONTACT THE WICOMICO COUNTY BOARD OF EDUCATION
 HU0431'AT THE SCHOOL OFFICE OR THE MAIN OFFICE.  ALLOW A DAY OR TWO FOR AN
 HU0431'ACCESS REQUEST TO BE PROCESSED.  DID NOT SEARCH FOR THE AZIMUTH MARK.
 HU0431'
 HU0431'THE MAIN STATION IS 75 FT (22.9 M) WEST OF THE EAST LINE EXTENDED OF
 HU0431'THE ADDITION, 57 FT (17.4 M) EAST OF THE MOST SOUTHERLY POST OF A
 HU0431'BASEBALL BACKSTOP, 56.5 FT (17.2 M) SOUTHEAST FROM POWER POLE
 HU0431'47538-93480, 40.5 FT (12.3 M) SOUTH OF A CHAIN LINK FENCE WITH WITNESS
 HU0431'SIGN ATTACHED ALONG THE SOUTH SIDE OF THE RAILROAD AND 17 FT (5.2 M)
 HU0431'EAST OF THE WEST LINE EXTENDED OF THE ADDITION (NOT THE COVERED
 HU0431'WALKWAY).
 HU0431'
 HU0431'REFERENCE MARK 1 IS ROUGHLY 35 FT (10.7 M) NORTH OF THE IRREGULAR EDGE
 HU0431'OF THE PLAYGROUND EQUIPMENT AREA, 27.5 FT (8.4 M) WEST OF THE WEST END
 HU0431'OF A METAL BENCH, 23 FT (7.0 M) SOUTH OF THE FENCE, 21 FT (6.4 M) WEST
 HU0431'OF THE WEST LINE EXTENDED OF THE MAIN BUILDING AND 9 FT (2.7 M) EAST
 HU0431'OF THE EAST LINE EXTENDED OF THE ADDITION.
 HU0431'
 HU0431'REFERENCE MARK 2 IS 115 FT (35.1 M) NORTH-NORTHEAST OF POLE
 HU0431'47541-93458 AT THE NORTH EDGE OF THE PARKING LOT, 102 FT (31.1 M)
 HU0431'NORTH OF THE NORTH EDGE OF THE PARKING LOT, 82 FT (25.0 M)
 HU0431'SOUTH-SOUTHEAST OF THE SOUTH BACKSTOP POST, 42 FT (12.8 M)
 HU0431'NORTH-NORTHEAST OF A MANHOLE AND 2 FT (0.6 M) EAST OF THE EXTENDED
 HU0431'WEST LINE OF THE ADDITION.
 HU0431
 HU0431                          STATION RECOVERY (2019)
 HU0431
 HU0431'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (WAC)
 HU0431'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0433 ***********************************************************************
 HU0433  DESIGNATION -  EAST SCHOOL AZ MK
 HU0433  PID         -  HU0433
 HU0433  STATE/COUNTY-  MD/WICOMICO
 HU0433  COUNTRY     -  US
 HU0433  USGS QUAD   -  SALISBURY (2016)
 HU0433
 HU0433                         *CURRENT SURVEY CONTROL
 HU0433  ______________________________________________________________________
 HU0433* NAD 83(1991) POSITION- 38 22 18.46350(N) 075 34 31.40116(W)   NO CHECK
 HU0433* NAVD 88 ORTHO HEIGHT -     9.864 (meters)       32.36  (feet) ADJUSTED
 HU0433  ______________________________________________________________________
 HU0433  GEOID HEIGHT    -        -35.825 (meters)                     GEOID18
 HU0433  LAPLACE CORR    -         -1.20  (seconds)                    DEFLEC18
 HU0433  DYNAMIC HEIGHT  -          9.858 (meters)       32.34  (feet) COMP
 HU0433  MODELED GRAVITY -    980,006.0   (mgal)                       NAVD 88
 HU0433
 HU0433  HORZ ORDER      -  SECOND
 HU0433  VERT ORDER      -  FIRST     CLASS I
 HU0433
 HU0433.The horizontal coordinates were established by classical geodetic methods
 HU0433.and adjusted by the National Geodetic Survey in January 1992.
 HU0433
 HU0433.No horizontal observational check was made to the station.
 HU0433
 HU0433.The orthometric height was determined by differential leveling and
 HU0433.adjusted by the NATIONAL GEODETIC SURVEY
 HU0433.in June 1991.
 HU0433
 HU0433.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0433.GEOID18 height accuracy estimate available here.
 HU0433
 HU0433.Click photographs - Photos may exist for this station.
 HU0433
 HU0433.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0433
 HU0433.The dynamic height is computed by dividing the NAVD 88
 HU0433.geopotential number by the normal gravity value computed on the
 HU0433.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0433.degrees latitude (g = 980.6199 gals.).
 HU0433
 HU0433.The modeled gravity was interpolated from observed gravity values.
 HU0433
 HU0433. The following values were computed from the NAD 83(1991) position.
 HU0433
 HU0433;                    North         East     Units Scale Factor Converg.
 HU0433;SPC MD       -    79,243.662   524,486.195   MT  0.99998829   +0 53 38.9
 HU0433;SPC MD       -   259,985.25  1,720,751.79   sFT  0.99998829   +0 53 38.9
 HU0433;UTM  18      - 4,247,224.471   449,738.281   MT  0.99963111   -0 21 25.9
 HU0433
 HU0433!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0433!SPC MD       -   1.00000407  x   0.99998829  =   0.99999236
 HU0433!UTM  18      -   1.00000407  x   0.99963111  =   0.99963518
 HU0433
 HU0433_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4973847224(NAD 83)
 HU0433
 HU0433                          SUPERSEDED SURVEY CONTROL
 HU0433
 HU0433  NAD 83(1986)-  38 22 18.45540(N)    075 34 31.42628(W) AD(       ) 2
 HU0433  NGVD 29              10.12   (m)           33.2    (f) LEVELING    3  
 HU0433  NGVD 29 (11/26/84)   10.119  (m)           33.20   (f) ADJUSTED    1 1
 HU0433
 HU0433.Superseded values are not recommended for survey control.
 HU0433
 HU0433.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0433.See file dsdata.pdf to determine how the superseded data were derived.
 HU0433
 HU0433_MARKER: DZ = AZIMUTH MARK DISK
 HU0433_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0433_STAMPING: EAST SCHOOL 1956
 HU0433_MARK LOGO: CGS
 HU0433_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0433+STABILITY: SURFACE MOTION
 HU0433_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0433+SATELLITE: SATELLITE OBSERVATIONS - September 08, 2005
 HU0433
 HU0433  HISTORY     - Date     Condition        Report By
 HU0433  HISTORY     - 1956     MONUMENTED       CGS
 HU0433  HISTORY     - 1963     GOOD             CGS
 HU0433  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0433  HISTORY     - 20050908 GOOD             GEOCAC
 HU0433
 HU0433                          STATION DESCRIPTION
 HU0433
 HU0433'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0433'1.4 MI E FROM SALISBURY.
 HU0433'1.25 MILES EAST ALONG MAIN STREET FROM THE OVERPASS OF THE
 HU0433'PENNSYLVANIA RAILROAD OVER MAIN STREET AT SALISBURY, THENCE 0.1
 HU0433'MILE SOUTH ALONG A BLACK TOP STREET, IN THE SOUTHWEST QUARTER OF
 HU0433'A STREET INTERSECTION, 82 FEET EAST-NORTHEAST OF A TWO STORY
 HU0433'FRAME HOUSE SIDED WITH BLUE SHINGLES, 30 FEET SOUTHWEST OF CENTER
 HU0433'OF INTERSECTION, 6.4 FEET SOUTHEAST OF POWER POLE 108L, 4.8 FEET
 HU0433'SOUTHEAST OF A WHITE WOODEN WITNESS POST, ABOUT LEVEL WITH
 HU0433'INTERSECTION, AND SET IN THE TOP OF A CONCRETE POST 1 INCH BELOW
 HU0433'SURFACE OF GROUND.
 HU0433
 HU0433                          STATION RECOVERY (1997)
 HU0433
 HU0433'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0433'MARK NOT FOUND.
 HU0433
 HU0433                          STATION RECOVERY (2005)
 HU0433
 HU0433'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0433'THE AZIMUTH MARK IS LOCATED IN THE SOUTHWEST ANGLE OF THE INTERSECTION
 HU0433'OF CENTENARY AND WHITE STREETS, AND IS RECESSED ONE INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0432 ***********************************************************************
 HU0432  DESIGNATION -  EAST SCHOOL RM 1
 HU0432  PID         -  HU0432
 HU0432  STATE/COUNTY-  MD/WICOMICO
 HU0432  COUNTRY     -  US
 HU0432  USGS QUAD   -  DELMAR (2016)
 HU0432
 HU0432                         *CURRENT SURVEY CONTROL
 HU0432  ______________________________________________________________________
 HU0432* NAD 83(1991) POSITION- 38 22 29.59146(N) 075 34 30.30432(W)   NO CHECK
 HU0432* NAVD 88 ORTHO HEIGHT -    11.535 (meters)       37.84  (feet) ADJUSTED
 HU0432  ______________________________________________________________________
 HU0432  GEOID HEIGHT    -        -35.820 (meters)                     GEOID18
 HU0432  LAPLACE CORR    -         -1.19  (seconds)                    DEFLEC18
 HU0432  DYNAMIC HEIGHT  -         11.528 (meters)       37.82  (feet) COMP
 HU0432  MODELED GRAVITY -    980,006.3   (mgal)                       NAVD 88
 HU0432
 HU0432  HORZ ORDER      -  SECOND
 HU0432  VERT ORDER      -  FIRST     CLASS I
 HU0432
 HU0432.The horizontal coordinates were established by classical geodetic methods
 HU0432.and adjusted by the National Geodetic Survey in January 1992.
 HU0432
 HU0432.No horizontal observational check was made to the station.
 HU0432
 HU0432.The orthometric height was determined by differential leveling and
 HU0432.adjusted by the NATIONAL GEODETIC SURVEY
 HU0432.in June 1991.
 HU0432
 HU0432.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0432.GEOID18 height accuracy estimate available here.
 HU0432
 HU0432.Click photographs - Photos may exist for this station.
 HU0432
 HU0432.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0432
 HU0432.The dynamic height is computed by dividing the NAVD 88
 HU0432.geopotential number by the normal gravity value computed on the
 HU0432.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0432.degrees latitude (g = 980.6199 gals.).
 HU0432
 HU0432.The modeled gravity was interpolated from observed gravity values.
 HU0432
 HU0432. The following values were computed from the NAD 83(1991) position.
 HU0432
 HU0432;                    North         East     Units Scale Factor Converg.
 HU0432;SPC MD       -    79,587.155   524,507.461   MT  0.99998782   +0 53 39.6
 HU0432;SPC MD       -   261,112.19  1,720,821.56   sFT  0.99998782   +0 53 39.6
 HU0432;UTM  18      - 4,247,567.295   449,767.033   MT  0.99963107   -0 21 25.3
 HU0432
 HU0432!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0432!SPC MD       -   1.00000381  x   0.99998782  =   0.99999163
 HU0432!UTM  18      -   1.00000381  x   0.99963107  =   0.99963488
 HU0432
 HU0432_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4976747567(NAD 83)
 HU0432
 HU0432                          SUPERSEDED SURVEY CONTROL
 HU0432
 HU0432  NAD 83(1986)-  38 22 29.58332(N)    075 34 30.32954(W) AD(       ) 2
 HU0432  NGVD 29              11.79   (m)           38.7    (f) LEVELING    3  
 HU0432  NGVD 29 (11/26/84)   11.790  (m)           38.68   (f) ADJUSTED    1 1
 HU0432
 HU0432.Superseded values are not recommended for survey control.
 HU0432
 HU0432.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0432.See file dsdata.pdf to determine how the superseded data were derived.
 HU0432
 HU0432_MARKER: DR = REFERENCE MARK DISK
 HU0432_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0432_STAMPING: EAST SCHOOL RM 1 1956
 HU0432_MARK LOGO: CGS
 HU0432_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0432+STABILITY: SURFACE MOTION
 HU0432_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0432+SATELLITE: SATELLITE OBSERVATIONS - September 08, 2005
 HU0432
 HU0432  HISTORY     - Date     Condition        Report By
 HU0432  HISTORY     - 1956     MONUMENTED       CGS
 HU0432  HISTORY     - 1963     GOOD             CGS
 HU0432  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0432  HISTORY     - 20050908 GOOD             GEOCAC
 HU0432
 HU0432                          STATION DESCRIPTION
 HU0432
 HU0432'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0432'1.2 MI E FROM SALISBURY.
 HU0432'1.25 MILES EAST ALONG MAIN STREET FROM THE OVERPASS OF THE
 HU0432'PENNSYLVANIA RAILROAD OVER MAIN STREET AT SALISBURY, AT EAST
 HU0432'SCHOOL, IN THE NORTHWEST CORNER OF THE PLAYGROUND, 205 FEET
 HU0432'NORTH-NORTHWEST OF NORTHWEST CORNER OF THE SCHOOL, 114 FEET
 HU0432'EAST-SOUTHEAST OF POWER POLE 3G, 84.7 FEET EAST-NORTHEAST OF
 HU0432'TRIANGULATION STATION EAST SCHOOL DESCRIBED, 52.1 FEET SOUTH OF
 HU0432'SOUTH RAIL OF A RAILROAD TRACK, 11 FEET NORTHEAST OF A 4-INCH
 HU0432'MAPLE TREE, AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 HU0432'GROUND.
 HU0432
 HU0432                          STATION RECOVERY (1997)
 HU0432
 HU0432'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0432'MARK NOT FOUND.
 HU0432
 HU0432                          STATION RECOVERY (2005)
 HU0432
 HU0432'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0432'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0430 ***********************************************************************
 HU0430  DESIGNATION -  EAST SCHOOL RM 2
 HU0430  PID         -  HU0430
 HU0430  STATE/COUNTY-  MD/WICOMICO
 HU0430  COUNTRY     -  US
 HU0430  USGS QUAD   -  SALISBURY (2016)
 HU0430
 HU0430                         *CURRENT SURVEY CONTROL
 HU0430  ______________________________________________________________________
 HU0430* NAD 83(1991) POSITION- 38 22 28.50049(N) 075 34 31.27358(W)   NO CHECK
 HU0430* NAVD 88 ORTHO HEIGHT -    11.237 (meters)       36.87  (feet) ADJUSTED
 HU0430  ______________________________________________________________________
 HU0430  GEOID HEIGHT    -        -35.820 (meters)                     GEOID18
 HU0430  LAPLACE CORR    -         -1.19  (seconds)                    DEFLEC18
 HU0430  DYNAMIC HEIGHT  -         11.230 (meters)       36.84  (feet) COMP
 HU0430  MODELED GRAVITY -    980,006.3   (mgal)                       NAVD 88
 HU0430
 HU0430  HORZ ORDER      -  SECOND
 HU0430  VERT ORDER      -  FIRST     CLASS I
 HU0430
 HU0430.The horizontal coordinates were established by classical geodetic methods
 HU0430.and adjusted by the National Geodetic Survey in January 1992.
 HU0430
 HU0430.No horizontal observational check was made to the station.
 HU0430
 HU0430.The orthometric height was determined by differential leveling and
 HU0430.adjusted by the NATIONAL GEODETIC SURVEY
 HU0430.in June 1991.
 HU0430
 HU0430.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0430.GEOID18 height accuracy estimate available here.
 HU0430
 HU0430.Click photographs - Photos may exist for this station.
 HU0430
 HU0430.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0430
 HU0430.The dynamic height is computed by dividing the NAVD 88
 HU0430.geopotential number by the normal gravity value computed on the
 HU0430.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0430.degrees latitude (g = 980.6199 gals.).
 HU0430
 HU0430.The modeled gravity was interpolated from observed gravity values.
 HU0430
 HU0430. The following values were computed from the NAD 83(1991) position.
 HU0430
 HU0430;                    North         East     Units Scale Factor Converg.
 HU0430;SPC MD       -    79,553.153   524,484.462   MT  0.99998786   +0 53 39.0
 HU0430;SPC MD       -   261,000.64  1,720,746.11   sFT  0.99998786   +0 53 39.0
 HU0430;UTM  18      - 4,247,533.815   449,743.306   MT  0.99963110   -0 21 25.9
 HU0430
 HU0430!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0430!SPC MD       -   1.00000386  x   0.99998786  =   0.99999172
 HU0430!UTM  18      -   1.00000386  x   0.99963110  =   0.99963496
 HU0430
 HU0430_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4974347533(NAD 83)
 HU0430
 HU0430                          SUPERSEDED SURVEY CONTROL
 HU0430
 HU0430  NAD 83(1986)-  38 22 28.49238(N)    075 34 31.29869(W) AD(       ) 2
 HU0430  NGVD 29              11.49   (m)           37.7    (f) LEVELING    3  
 HU0430  NGVD 29 (11/26/84)   11.492  (m)           37.70   (f) ADJUSTED    1 1
 HU0430
 HU0430.Superseded values are not recommended for survey control.
 HU0430
 HU0430.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0430.See file dsdata.pdf to determine how the superseded data were derived.
 HU0430
 HU0430_MARKER: DR = REFERENCE MARK DISK
 HU0430_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0430_STAMPING: EAST SCHOOL RM 2 1956
 HU0430_MARK LOGO: CGS
 HU0430_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0430+STABILITY: SURFACE MOTION
 HU0430_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0430+SATELLITE: SATELLITE OBSERVATIONS - September 08, 2005
 HU0430
 HU0430  HISTORY     - Date     Condition        Report By
 HU0430  HISTORY     - 1956     MONUMENTED       CGS
 HU0430  HISTORY     - 1963     GOOD             CGS
 HU0430  HISTORY     - 19971018 GOOD             USPSQD
 HU0430  HISTORY     - 20050908 GOOD             GEOCAC
 HU0430
 HU0430                          STATION DESCRIPTION
 HU0430
 HU0430'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0430'1.2 MI E FROM SALISBURY.
 HU0430'1.25 MILES EAST ALONG MAIN STREET FROM THE OVERPASS OF THE
 HU0430'PENNSYLVANIA RAILROAD OVER MAIN STREET AT SALISBURY, AT EAST
 HU0430'SCHOOL, IN THE NORTHWEST CORNER OF THE PLAYGROUND, 183 FEET
 HU0430'NORTHWEST OF NORTHWEST CORNER OF THE SCHOOL, 77.5 FEET SOUTH-SOUTHWEST
 HU0430'OF TRIANGULATION STATION EAST SCHOOL DESCRIBED, 32.6 FEET
 HU0430'NORTH OF A 6-INCH MAPLE TREE, 16 FEET EAST OF APPROXIMATE
 HU0430'CENTER OF A DIRT ROAD ALONG WEST SIDE OF PLAYGROUND LEADING NORTH
 HU0430'AND DEAD ENDS AT A RAILROAD TRACK, AND SET IN THE TOP OF A
 HU0430'CONCRETE POST 1 INCH BELOW SURFACE OF GROUND.
 HU0430
 HU0430                          STATION RECOVERY (1997)
 HU0430
 HU0430'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0430'RECOVERED IN GOOD CONDITION.
 HU0430
 HU0430                          STATION RECOVERY (2005)
 HU0430
 HU0430'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0430'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6207 ***********************************************************************
 HV6207  DESIGNATION -  EASTERN
 HV6207  PID         -  HV6207
 HV6207  STATE/COUNTY-  MD/QUEEN ANNES
 HV6207  COUNTRY     -  US
 HV6207  USGS QUAD   -  KENT ISLAND (2016)
 HV6207
 HV6207                         *CURRENT SURVEY CONTROL
 HV6207  ______________________________________________________________________
 HV6207* NAD 83(1991) POSITION- 38 58 55.51495(N) 076 20 02.68464(W)   ADJUSTED
 HV6207* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6207  ______________________________________________________________________
 HV6207  GEOID HEIGHT    -        -33.559 (meters)                     GEOID18
 HV6207  LAPLACE CORR    -         -2.45  (seconds)                    DEFLEC18
 HV6207  HORZ ORDER      -  SECOND
 HV6207
 HV6207.The horizontal coordinates were established by classical geodetic methods
 HV6207.and adjusted by the National Geodetic Survey in January 1992.
 HV6207
 HV6207.The orthometric height was scaled from a topographic map.
 HV6207
 HV6207.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6207.GEOID18 height accuracy estimate available here.
 HV6207
 HV6207.Click photographs - Photos may exist for this station.
 HV6207
 HV6207.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6207
 HV6207. The following values were computed from the NAD 83(1991) position.
 HV6207
 HV6207;                    North         East     Units Scale Factor Converg.
 HV6207;SPC MD       -   146,228.184   457,697.571   MT  0.99995156   +0 25 04.6
 HV6207;SPC MD       -   479,750.30  1,501,629.45   sFT  0.99995156   +0 25 04.6
 HV6207;UTM  18      - 4,315,635.170   384,448.431   MT  0.99976441   -0 50 21.6
 HV6207
 HV6207!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6207!SPC MD       -   1.00000515  x   0.99995156  =   0.99995671
 HV6207!UTM  18      -   1.00000515  x   0.99976441  =   0.99976955
 HV6207
 HV6207:                Primary Azimuth Mark                     Grid Az
 HV6207:SPC MD       -  EASTERN AZ MK                            022 45 15.1
 HV6207:UTM  18      -  EASTERN AZ MK                            024 00 41.3
 HV6207
 HV6207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8444815635(NAD 83)
 HV6207
 HV6207|---------------------------------------------------------------------|
 HV6207| PID    Reference Object                     Distance      Geod. Az  |
 HV6207|                                                           dddmmss.s |
 HV6207| CX2733 EASTERN AZ MK                                      0231019.7 |
 HV6207| CX2734 EASTERN RM 1                         30.690 METERS 16222     |
 HV6207| CX2735 EASTERN RM 2                         18.483 METERS 24709     |
 HV6207|---------------------------------------------------------------------|
 HV6207
 HV6207                          SUPERSEDED SURVEY CONTROL
 HV6207
 HV6207  NAD 83(1986)-  38 58 55.51039(N)    076 20 02.69661(W) AD(       ) 2
 HV6207  NAD 27      -  38 58 55.10400(N)    076 20 03.85300(W) AD(       ) 2
 HV6207
 HV6207.Superseded values are not recommended for survey control.
 HV6207
 HV6207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6207.See file dsdata.pdf to determine how the superseded data were derived.
 HV6207
 HV6207_MARKER: DS = TRIANGULATION STATION DISK
 HV6207_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6207_STAMPING: EASTERN 1947
 HV6207_MARK LOGO: CGS
 HV6207_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6207+STABILITY: SURFACE MOTION
 HV6207
 HV6207  HISTORY     - Date     Condition        Report By
 HV6207  HISTORY     - 1947     MONUMENTED       CGS
 HV6207  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6207
 HV6207                          STATION DESCRIPTION
 HV6207
 HV6207'DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (MJT)
 HV6207'THE STATION IS LOCATED ON THE W SHORE OF KENT ISLAND, ABOUT 2
 HV6207'MILES N OF THE MATAPEAKE FERRY LANDING.  THE STATION IS ON A POINT
 HV6207'OF MARSHY LAND, 45 FEET FROM THE NEAREST HIGH WATER, 34.2 FEET E
 HV6207'OF A RED AND WHITE RANGE POLE OR TARGET, AND 2 FEET W OF THE EDGE
 HV6207'OF A CULTIVATED FIELD.  MARK IS A BRONZE STATION DISK STAMPED
 HV6207'EASTERN 1947, AND IS SET IN AN 8-INCH TILE PROJECTING 4
 HV6207'INCHES.  UNDERGROUND MARK IS A BRONZE STATION DISK SET IN THE
 HV6207'TOP OF A CONCRETE POST.
 HV6207'
 HV6207'REFERENCE MARK 1 IS 100.69 FEET SE OF THE STATION AND 2 FEET W
 HV6207'OF THE EDGE OF THE FIELD.  IT IS A BRONZE REFERENCE DISK STAMPED
 HV6207'EASTERN NO 1 1947, IS SET IN THE TOP OF A CONCRETE POST, AND
 HV6207'PROJECTS ABOUT 6 INCHES.
 HV6207'
 HV6207'REFERENCE MARK 2 IS 60.64 FEET SW OF THE STATION AND 35 FEET S
 HV6207'OF THE RED AND WHITE RANGE POLE.  IT IS A BRONZE REFERENCE DISK
 HV6207'STAMPED EASTERN NO 2 1947, IS SET IN THE TOP OF A CONCRETE POST,
 HV6207'AND PROJECTS ABOUT 8 INCHES.
 HV6207'
 HV6207'THE AZIMUTH MARK IS ABOUT 0.3 MILE NW OF THE STATION, 10 FEET
 HV6207'NE OF A GRAVEL TRACK ROAD, AND 1 FOOT NW OF THE FENCE LINE UNDER A
 HV6207'POWER LINE LEADING FROM THE CABLE HOUSE ON THE BEACH.  IT IS A
 HV6207'BRONZE AZIMUTH DISK STAMPED EASTERN 1947, IS SET IN THE TOP OF A
 HV6207'CONCRETE POST, AND PROJECTS ABOUT 6 INCHES.
 HV6207'
 HV6207'TO REACH THE STATION FROM THE MATAPEAKE FERRY LANDING, GO E FOR
 HV6207'0.4 MILE, TURN LEFT ON STATE HIGHWAY 404, GO 1.9 MILES, TURN LEFT
 HV6207'INTO A GRAVEL FARM DRIVE, GO 0.6 MILE BEARING RIGHT AROUND THE
 HV6207'BUILDINGS TO THE REAR OF THE BARN AND END OF TRUCK TRAVEL.  THE
 HV6207'STATION IS ABOUT 0.3 MILE NW ACROSS THE FIELD TO THE BEACH AS
 HV6207'DESCRIBED.  TO REACH THE AZIMUTH MARK FROM THE BARN, GO N ON
 HV6207'GRAVEL TRACK ROAD FOR 0.3 MILE TO THE AZIMUTH MARK ON THE LEFT AS
 HV6207'DESCRIBED.
 HV6207'
 HV6207'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 HV6207
 HV6207                          STATION RECOVERY (1960)
 HV6207
 HV6207'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6207'STATION COULD NOT BE FOUND.  THE FILL FOR THE EASTERN APPROACH FOR
 HV6207'THE BAY BRIDGE COVERS THE AREA OF THE STATION, RMS, AND AZIMUTH
 HV6207'MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0046 ***********************************************************************
 HV0046  DESIGNATION -  EASTON
 HV0046  PID         -  HV0046
 HV0046  STATE/COUNTY-  MD/TALBOT
 HV0046  COUNTRY     -  US
 HV0046  USGS QUAD   -  EASTON (2016)
 HV0046
 HV0046                         *CURRENT SURVEY CONTROL
 HV0046  ______________________________________________________________________
 HV0046* NAD 83(1986) POSITION- 38 45 49.6    (N) 076 04 22.0    (W)   HD_HELD2
 HV0046* NAVD 88 ORTHO HEIGHT -    10.554 (meters)       34.63  (feet) ADJUSTED
 HV0046  ______________________________________________________________________
 HV0046  GEOID HEIGHT    -        -34.692 (meters)                     GEOID18
 HV0046  DYNAMIC HEIGHT  -         10.547 (meters)       34.60  (feet) COMP
 HV0046  MODELED GRAVITY -    980,035.3   (mgal)                       NAVD 88
 HV0046
 HV0046  VERT ORDER      -  FIRST     CLASS II
 HV0046
 HV0046.The horizontal coordinates were established by autonomous hand held GPS
 HV0046.observations and have an estimated accuracy of +/- 10 meters.
 HV0046
 HV0046.The orthometric height was determined by differential leveling and
 HV0046.adjusted by the NATIONAL GEODETIC SURVEY
 HV0046.in June 1991.
 HV0046
 HV0046.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0046.GEOID18 height accuracy estimate available here.
 HV0046
 HV0046.Click photographs - Photos may exist for this station.
 HV0046
 HV0046.The dynamic height is computed by dividing the NAVD 88
 HV0046.geopotential number by the normal gravity value computed on the
 HV0046.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0046.degrees latitude (g = 980.6199 gals.).
 HV0046
 HV0046.The modeled gravity was interpolated from observed gravity values.
 HV0046
 HV0046;                    North         East    Units  Estimated Accuracy
 HV0046;SPC MD       -   122,193.      480,583.      MT  (+/- 10 meters HH2 GPS)
 HV0046
 HV0046_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0679791109(NAD 83)
 HV0046
 HV0046                          SUPERSEDED SURVEY CONTROL
 HV0046
 HV0046  NGVD 29 (11/26/84)   10.792  (m)           35.41   (f) ADJUSTED    1 2
 HV0046
 HV0046.Superseded values are not recommended for survey control.
 HV0046
 HV0046.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0046.See file dsdata.pdf to determine how the superseded data were derived.
 HV0046
 HV0046_MARKER: DB = BENCH MARK DISK
 HV0046_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV0046+WITH SETTING: PAVEMENT
 HV0046_SP_SET: FLAGPOLE BASE
 HV0046_STAMPING: EASTON 1935
 HV0046_MARK LOGO: CGS
 HV0046_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0046_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0046+STABILITY: SURFACE MOTION
 HV0046_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0046+SATELLITE: SATELLITE OBSERVATIONS - February 13, 2012
 HV0046
 HV0046  HISTORY     - Date     Condition        Report By
 HV0046  HISTORY     - 1935     MONUMENTED       CGS
 HV0046  HISTORY     - 1971     GOOD             NGS
 HV0046  HISTORY     - 20000818 GOOD             MDSHA
 HV0046  HISTORY     - 20020312 GOOD             USPSQD
 HV0046  HISTORY     - 20050314 GOOD             USPSQD
 HV0046  HISTORY     - 20060516 GOOD             USPSQD
 HV0046  HISTORY     - 20120213 GOOD             NGS
 HV0046
 HV0046                          STATION DESCRIPTION
 HV0046
 HV0046'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0046'0.8 MI S FROM EASTON.
 HV0046'ABOUT 0.8 MILE SOUTH ALONG WASHINGTON STREET FROM THE COURTHOUSE
 HV0046'AT EASTON, AT THE EASTON HIGH SCHOOL, SET IN THE TOP AND AT THE
 HV0046'NORTHEAST CORNER OF THE CONCRETE BASE SUPPORTING THE FLAGPOLE,
 HV0046'167 FEET EAST OF THE CENTER LINE OF WASHINGTON STREET, 109.5
 HV0046'FEET SOUTH OF THE SOUTHWEST CORNER OF THE SCHOOL BUILDING, 2.9
 HV0046'FEET ABOVE THE LEVEL OF THE GROUND AND ABOUT 3 FEET ABOVE THE
 HV0046'LEVEL OF THE STREET.
 HV0046
 HV0046                          STATION RECOVERY (2000)
 HV0046
 HV0046'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV0046'RECOVERED AS DESCRIBED.
 HV0046
 HV0046                          STATION RECOVERY (2002)
 HV0046
 HV0046'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0046'EASTON HIGH SCHOOL MOVED AND OLD BUILDING DESTROYED.  FLAG POLE
 HV0046'REMOVED, BASE REMAINS, WITH BRONZE AMERICAN LEGION DISK ON THE W SIDE.
 HV0046'PROPERTY IS NOW IDLEWILDE PARK.
 HV0046
 HV0046                          STATION RECOVERY (2005)
 HV0046
 HV0046'RECOVERY NOTE BY US POWER SQUADRON 2005 (AEM)
 HV0046'RECOVERED IN GOOD CONDITION.
 HV0046
 HV0046                          STATION RECOVERY (2006)
 HV0046
 HV0046'RECOVERY NOTE BY US POWER SQUADRON 2006
 HV0046'RECOVERED IN GOOD CONDITION.
 HV0046
 HV0046                          STATION RECOVERY (2012)
 HV0046
 HV0046'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRA)
 HV0046'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0047 ***********************************************************************
 HV0047  DESIGNATION -  EASTON
 HV0047  PID         -  HV0047
 HV0047  STATE/COUNTY-  MD/TALBOT
 HV0047  COUNTRY     -  US
 HV0047  USGS QUAD   -  EASTON (2016)
 HV0047
 HV0047                         *CURRENT SURVEY CONTROL
 HV0047  ______________________________________________________________________
 HV0047* NAD 83(2011) POSITION- 38 46 03.52591(N) 076 05 40.26963(W)   ADJUSTED
 HV0047* NAD 83(2011) ELLIP HT-   -33.804 (meters)        (06/27/12)   ADJUSTED
 HV0047* NAD 83(2011) EPOCH   -  2010.00
 HV0047* NAVD 88 ORTHO HEIGHT -     0.850 (meters)        2.79  (feet) ADJUSTED
 HV0047  ______________________________________________________________________
 HV0047  GEOID HEIGHT    -        -34.648 (meters)                     GEOID18
 HV0047  NAD 83(2011) X  -  1,196,676.269 (meters)                     COMP
 HV0047  NAD 83(2011) Y  - -4,833,561.684 (meters)                     COMP
 HV0047  NAD 83(2011) Z  -  3,972,217.008 (meters)                     COMP
 HV0047  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 HV0047  DYNAMIC HEIGHT  -          0.850 (meters)        2.79  (feet) COMP
 HV0047  MODELED GRAVITY -    980,036.3   (mgal)                       NAVD 88
 HV0047
 HV0047  VERT ORDER      -  SECOND    CLASS I
 HV0047
 HV0047  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0047  Standards:
 HV0047         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0047            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0047  -------------------------------------------------------------------
 HV0047  NETWORK    0.32   0.47           0.14   0.12   0.24     -0.12588566
 HV0047  -------------------------------------------------------------------
 HV0047  Click here for local accuracies and other accuracy information.
 HV0047
 HV0047.The horizontal coordinates were established by GPS observations
 HV0047.and adjusted by the National Geodetic Survey in June 2012.
 HV0047
 HV0047.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0047.been affixed to the stable North American tectonic plate. See 
 HV0047.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0047
 HV0047.The horizontal coordinates are valid at the epoch date displayed above
 HV0047.which is a decimal equivalence of Year/Month/Day.
 HV0047
 HV0047.The orthometric height was determined by differential leveling and
 HV0047.adjusted by the NATIONAL GEODETIC SURVEY
 HV0047.in September 2004.
 HV0047
 HV0047.No vertical observational check was made to the station.
 HV0047
 HV0047.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0047.GEOID18 height accuracy estimate available here.
 HV0047
 HV0047.Click photographs - Photos may exist for this station.
 HV0047
 HV0047.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0047
 HV0047.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0047
 HV0047.The ellipsoidal height was determined by GPS observations
 HV0047.and is referenced to NAD 83.
 HV0047
 HV0047.The dynamic height is computed by dividing the NAVD 88
 HV0047.geopotential number by the normal gravity value computed on the
 HV0047.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0047.degrees latitude (g = 980.6199 gals.).
 HV0047
 HV0047.The modeled gravity was interpolated from observed gravity values.
 HV0047
 HV0047. The following values were computed from the NAD 83(2011) position.
 HV0047
 HV0047;                    North         East     Units Scale Factor Converg.
 HV0047;SPC MD       -   122,603.376   478,689.332   MT  0.99995162   +0 34 05.9
 HV0047;SPC MD       -   402,241.24  1,570,499.92   sFT  0.99995162   +0 34 05.9
 HV0047;UTM  18      - 4,291,561.267   404,913.193   MT  0.99971134   -0 41 07.4
 HV0047
 HV0047!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0047!SPC MD       -   1.00000530  x   0.99995162  =   0.99995692
 HV0047!UTM  18      -   1.00000530  x   0.99971134  =   0.99971664
 HV0047
 HV0047:                Primary Azimuth Mark                     Grid Az
 HV0047:SPC MD       -  EASTON RM 2 AZ MK                        141 51 30.6
 HV0047:UTM  18      -  EASTON RM 2 AZ MK                        143 06 43.9
 HV0047
 HV0047_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0491391561(NAD 83)
 HV0047
 HV0047|---------------------------------------------------------------------|
 HV0047| PID    Reference Object                     Distance      Geod. Az  |
 HV0047|                                                           dddmmss.s |
 HV0047| HV7939 EASTON RM 4                          15.132 METERS 03209     |
 HV0047| HV5646 EASTON STANDPIPE                    APPROX. 2.0 KM 0664701.6 |
 HV0047| HV5647 EASTON WATER TANK                   APPROX. 2.1 KM 0980745.4 |
 HV0047| HV0048 EASTON RM 1                          49.277 METERS 12952     |
 HV0047| HV8908 EASTON RM 2 AZ MK                                  1422536.5 |
 HV0047| HV7940 EASTON RM 5                          13.234 METERS 26849     |
 HV0047| CX2736 EASTON RM 3                          58.604 METERS 33847     |
 HV0047|---------------------------------------------------------------------|
 HV0047
 HV0047                          SUPERSEDED SURVEY CONTROL
 HV0047
 HV0047  NAD 83(2007)-  38 46 03.52613(N)    076 05 40.27027(W) AD(2002.00) 0
 HV0047  ELLIP H (02/10/07)  -33.771  (m)                       GP(2002.00)    
 HV0047  ELLIP H (08/09/02)  -33.741  (m)                       GP(       ) 4 2
 HV0047  NAD 83(1991)-  38 46 03.52674(N)    076 05 40.27110(W) AD(       ) B
 HV0047  ELLIP H (03/24/98)  -33.687  (m)                       GP(       ) 4 1
 HV0047  NAD 83(1993)-  38 46 03.52673(N)    076 05 40.27106(W) AD(       ) B
 HV0047  ELLIP H (11/22/95)  -33.685  (m)                       GP(       ) 1 1
 HV0047  NAD 83(1991)-  38 46 03.52551(N)    076 05 40.26945(W) AD(       ) 3
 HV0047  ELLIP H (01/27/92)  -33.771  (m)                       GP(       ) 4 1
 HV0047  NAD 83(1986)-  38 46 03.52321(N)    076 05 40.28480(W) AD(       ) 3
 HV0047  NAD 27      -  38 46 03.10700(N)    076 05 41.50000(W) AD(       ) 3
 HV0047  NAVD 88               0.85   (m)            2.8    (f) LEVELING    3  
 HV0047  NAVD 88               0.92   (m)            3.0    (f) LEVELING    3  
 HV0047  NAVD 88 (06/15/91)    0.922  (m)            3.02   (f) SUPERSEDED  1 2
 HV0047  NGVD 29               1.16   (m)            3.8    (f) LEVELING    3  
 HV0047  NGVD 29 (11/26/84)    1.160  (m)            3.81   (f) ADJUSTED    1 2
 HV0047
 HV0047.Superseded values are not recommended for survey control.
 HV0047
 HV0047.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0047.See file dsdata.pdf to determine how the superseded data were derived.
 HV0047
 HV0047_MARKER: DS = TRIANGULATION STATION DISK
 HV0047_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0047_STAMPING: EASTON 1934
 HV0047_MARK LOGO: CGS
 HV0047_PROJECTION: RECESSED 25 CENTIMETERS
 HV0047_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0047_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0047+STABILITY: SURFACE MOTION
 HV0047_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0047+SATELLITE: SATELLITE OBSERVATIONS - August 25, 2008
 HV0047
 HV0047  HISTORY     - Date     Condition        Report By
 HV0047  HISTORY     - 1934     MONUMENTED       CGS
 HV0047  HISTORY     - 1954     GOOD             CGS
 HV0047  HISTORY     - 1961     GOOD             CGS
 HV0047  HISTORY     - 1971     GOOD             NGS
 HV0047  HISTORY     - 1971     GOOD             NGS
 HV0047  HISTORY     - 1973     GOOD             MDDNR
 HV0047  HISTORY     - 1980     GOOD             NGS
 HV0047  HISTORY     - 19860130 GOOD
 HV0047  HISTORY     - 19941101 GOOD             NGS
 HV0047  HISTORY     - 19960319 GOOD             MCCRON
 HV0047  HISTORY     - 19970110 GOOD             USPSQD
 HV0047  HISTORY     - 20000522 GOOD             GEOMET
 HV0047  HISTORY     - 20000818 GOOD             MDSHA
 HV0047  HISTORY     - 20000918 GOOD             GEOMET
 HV0047  HISTORY     - 20060106 GOOD             GEOMET
 HV0047  HISTORY     - 20080825 GOOD             GEOMET
 HV0047
 HV0047                          STATION DESCRIPTION
 HV0047
 HV0047'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV0047'THIS SECOND-ORDER STATION IS ON EASTON POINT ABOUT 1 MILE SW OF THE
 HV0047'CENTER OF THE CITY OF EASTON, MARYLAND ON THE TRED AVON RIVER, ON THE
 HV0047'PROPERTY OF THE GULF REFINING COMPANY.  THE STATION IS ON THE GRASSY
 HV0047'PLOT BETWEEN THE DOCK AND THE WAREHOUSE.  34 FEET NE OF THE WATERS
 HV0047'EDGE AT THE NW EDGE OF THE DOCK.  45 FEET SE OF PROPERTY-LINE FENCE
 HV0047'BETWEEN THE GULF COMPANY PROPERTY AND TALBOT COUNTY PROPERTY.  37 FEET
 HV0047'S OF SW CORNER OF WAREHOUSE.  20 FEET NW OF RAMP FROM WAREHOUSE TO
 HV0047'DOCK.  MARK PROJECTS 7 INCHES ABOVE GROUND.
 HV0047'
 HV0047'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE DISKS
 HV0047'SET IN CONCRETE.
 HV0047'
 HV0047'REFERENCE MARK NO.1 IS SE OF THE STATION, PROJECTS 6 INCHES ABOVE THE
 HV0047'GROUND.  ON NW SIDE OF CEMENT TILE WAREHOUSE.  3 FEET NW OF NW SIDE OF
 HV0047'WAREHOUSE.  30 FEET NE OF SW SIDE OF WAREHOUSE.  39 FEET NE OF WATERS
 HV0047'EDGE.
 HV0047'
 HV0047'REFERENCE MARK NO.2, AZIMUTH MARK, IS SE OF STATION, PROJECTS 2 INCHES
 HV0047'ABOVE GROUND. THE MARK IS ON THE BLUFF NEAR A RED BRICK HOUSE AT THE S
 HV0047'END OF THE LARGE BODY OF THE CREEK, WHICH CAN BE SEEN FROM THE POINT
 HV0047'BY LOOKING OVER THE RAMP AND PAST THE TILE WAREHOUSE.  TO REACH THE
 HV0047'MARK, AT SIGN EASTON POINT MENTIONED ABOVE, GO S 0.6 MILE AND TURN
 HV0047'RIGHT AT SIGN TALBOT COUNTRY CLUB.  GO 0.7 MILE AND TURN RIGHT (FIRST
 HV0047'ROAD TO THE RIGHT AFTER CROSSING THE CREEK) ON TO DRIVE LEADING TO RED
 HV0047'BRICK HOUSE.  GO 0.7 MILE TO RED BRICK HOUSE.  GO AROUND HOUSE TO TOP
 HV0047'OF BLUFF AT WATERS EDGE.  THE MARK IS SE OF WATERS EDGE (30 FEET), 48
 HV0047'FEET SW OF AN OLD STUMP, 36 FEET W OF A LARGE CEDAR TREE, 69 FEET W OF
 HV0047'W CORNER OF BRICK HOUSE.
 HV0047'
 HV0047'REFERENCE MARK NO.3 IS NW OF STATION, PROJECTS 3 INCHES ABOVE GROUND.
 HV0047'IT IS AT THE S CORNER OF A BARN THAT IS AT THE WATERS EDGE, 39 FEET NW
 HV0047'OF THE CENTER LINE OF PAVEMENT AT THE PAVEMENTS END, 28 FEET SE OF
 HV0047'WATERS EDGE, 23 FEET N OF WATERS EDGE.
 HV0047'
 HV0047'TO REACH STATION FROM THE COURTHOUSE IN EASTON, GO S 1.0 MILE (2
 HV0047'BLOCKS) AND TURN RIGHT AT SIGN EASTON POINT.  GO 1.0 MILE TO END OF
 HV0047'PAVEMENT AT WATERS EDGE AND GULF COMPANY WAREHOUSE ON LEFT.
 HV0047'
 HV0047'90-FOOT TOWER NECESSARY.
 HV0047
 HV0047                          STATION RECOVERY (1954)
 HV0047
 HV0047'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (JCC)
 HV0047'STATION, STAMPED EASTON 1934, RECOVERED AS DESCRIBED.  REFERENCE
 HV0047'MARK 3, STAMPED EASTON NO 3 1934, RECOVERED AS DESCRIBED.
 HV0047'REFERENCE MARK 1, STAMPED EASTON NO 1 1934, RECOVERED AS DESCRIBED.
 HV0047
 HV0047                          STATION RECOVERY (1961)
 HV0047
 HV0047'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV0047'STATION MARK AND REFERENCE MARK NO.1 RECOVERED IN GOOD CONDITION.
 HV0047'REFERENCE MARK NO.3 IS BELIEVED TO HAVE BEEN DESTROYED BY STREET
 HV0047'CONSTRUCTION.  THE AZIMUTH MARK WAS NOT VISITED AT THIS TIME.
 HV0047
 HV0047                          STATION RECOVERY (1971)
 HV0047
 HV0047'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV0047'THE STATION MARK AND RM 1 WERE RECOVERED IN GOOD CONDITION.  RM 3
 HV0047'WAS NOT RECOVERED AND RM 2 (AZIMUTH MARK) WAS NOT SEARCHED FOR.
 HV0047'
 HV0047'TO REACH THE STATION MARK FROM THE COURTHOUSE AT EASTON GO ABOUT
 HV0047'0.15 MILE SOUTH ALONG WASHINGTON STREET, THENCE 1.1 MILES WEST
 HV0047'ALONG PORT STREET, AT EASTON POINT, ON THE PROPERTY OF THE GULF
 HV0047'OIL COMPANY, NEAR THE EAST BANK OF TRED AVON RIVER, 157 FEET
 HV0047'SOUTH OF THE EXTENDED CENTER LINE OF PORT STREET, 37.3 FEET
 HV0047'SOUTHWEST OF THE NORTHWEST CORNER OF THE MAIN BUILDING OF THE OIL
 HV0047'COMPANY, 25.5 FEET SOUTH OF A METAL FENCE, 20.3 FEET NORTH OF THE
 HV0047'NORTH EDGE OF A DOCK, 34 FEET EAST OF THE HIGH WATER LINE OF THE
 HV0047'RIVER, ABOUT LEVEL WITH THE STREET, AND SET IN THE TOP OF A
 HV0047'CONCRETE POST PROJECTING 6 INCHES.
 HV0047'
 HV0047'RM 1 IS 161.7 FEET SOUTHEAST OF THE STATION MARK, 294 FEET SOUTH
 HV0047'OF THE CENTER LINE OF THE STREET, 27.5 FEET EAST OF THE NORTHWEST
 HV0047'CORNER OF A WAREHOUSE, 1 FOOT NORTH OF A METAL FENCE, ABOUT LEVEL
 HV0047'WITH THE STREET, AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 HV0047'6 INCHES.
 HV0047'
 HV0047'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 1.25 MILES SOUTHWEST.
 HV0047
 HV0047                          STATION RECOVERY (1971)
 HV0047
 HV0047'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0047'1.2 MI SW FROM EASTON.
 HV0047'ABOUT 0.15 MILE SOUTH ALONG WASHINGTON STREET FROM THE COURTHOUSE
 HV0047'AT EASTON, THENCE 1.1 MILES WEST ALONG PORT STREET, AT EASTON
 HV0047'POINT, ON THE PROPERTY OF THE GULF OIL COMPANY, NEAR THE EAST
 HV0047'BANK OF TRED AVON RIVER, 157 FEET SOUTH OF THE EXTENDED CENTER
 HV0047'LINE OF PORT STREET, 37.3 FEET SOUTHWEST OF THE NORTHWEST CORNER
 HV0047'OF THE MAIN BUILDING OF THE OIL COMPANY, 25.5 FEET SOUTH OF A
 HV0047'STEEL BOUNDARY FENCE, 20.3 FEET NORTH OF THE NORTH EDGE OF A DOCK,
 HV0047'161.7 FEET NORTHWEST OF RM 1 DESCRIBED, 34 FEET EAST OF THE HIGH
 HV0047'WATER LINE OF TRED AVON RIVER, ABOUT LEVEL WITH PORT STREET
 HV0047'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES ABOVE
 HV0047'THE LEVEL OF THE GROUND.
 HV0047
 HV0047                          STATION RECOVERY (1973)
 HV0047
 HV0047'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV0047'EASTON 1934 GOOD
 HV0047'
 HV0047'RM 1 1934 GOOD
 HV0047'
 HV0047'RECOVERED AS DESCRIBED.  AZ MARK NOT VISITED.
 HV0047
 HV0047                          STATION RECOVERY (1980)
 HV0047
 HV0047'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 (RGP)
 HV0047'THE STATION MARK AND THE AZIMUTH MARK WERE RECOVERED AND FOUND IN GOOD
 HV0047'CONDITION.  REFERENCE MARKS ONE AND THREE WERE NOT FOUND AND THEY ARE
 HV0047'BELIEVED DESTROYED AS PREVIOUSLY REPORTED.  REFERENCE MARKS FOUR AND
 HV0047'FIVE WERE ESTABLISHED AT THIS DATE.
 HV0047'
 HV0047'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HV0047'
 HV0047'THE STATION IS LOCATED ABOUT 1-1/4 MILES WEST OF EASTON, ON THE EAST
 HV0047'BANK OF THE TRED AVON RIVER AND AT EASTON POINT.  THE PROPERTY IS
 HV0047'OWNED BY THE GULF OIL COMPANY.
 HV0047'
 HV0047'TO REACH THE STATION FROM THE COURT HOUSE IN EASTON, GO SOUTH ON
 HV0047'WASHINGTON STREET FOR 0.15 MILE TO A CROSSROADS.  TURN RIGHT AND GO
 HV0047'WEST STATE HIGHWAY 334 (PORT ST.) FOR 0.65 MILE TO A CROSSROADS AT
 HV0047'THE INTERSECTION OF STATE HIGHWAY 334 (PORT STREET) AND STATE HIGHWAY
 HV0047'322 (EASTON PARKWAY).  CONTINUE WEST ON STATE HIGHWAY 322 (PORT
 HV0047'STREET) FOR 0.5 MILE TO EASTON POINT AND THE STATION ABOUT 155 FEET
 HV0047'TO THE SOUTH OF THE END OF THE ROAD AND INSIDE OF A WOVEN WIRE
 HV0047'ENCLOSURE.
 HV0047'
 HV0047'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 HV0047'STAMPED---EASTON 1934---SET INTO THE TOP OF A SQUARE CONCRETE
 HV0047'MONUMENT 25 CM (10 INCHES) ON SIDE RECESSED 10 CM (4 INCHES) BELOW
 HV0047'THE GROUND LOCATED 11.3 METERS (37 FEET) SW FROM THE NORTHWEST CORNER
 HV0047'OF THE GULF OIL COMPANY, 10.4 METERS (34 FEET) E FROM THE SHORE LINE
 HV0047'AT A BUCKHEAD, 9.4 METERS (31 FEET) S FROM THE SOUTH SIDE OF A
 HV0047'PARKING LOT, 8.69 METERS (28.5 FEET) NE FROM THE SOUTHEAST OF A
 HV0047'MARINE GAS PUMP ISLAND, AND 8.2 METERS (27 FEET) S FROM THE CENTER OF
 HV0047'A GATE IN A CHAIN LINK FENCE.
 HV0047'
 HV0047'REFERENCE MARK NO. 4 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HV0047'STAMPED---EASTON 1934 NO 4 1980---CEMENTED IN A DRILL HOLE IN THE
 HV0047'WEST PART OF A GAS PUMP ISLAND FOR THE GULF OIL COMPANY BUILDING.  IT
 HV0047'PROJECTS 6-INCHES AND IS LOCATED 25.9 METERS (85 FEET) E FROM THE
 HV0047'SHORE LINE, 10.7 METERS (35 FEET) E FROM THE CENTER OF THE GATE, 4.6
 HV0047'METERS (15 FEET) N FROM THE NORTHWEST CORNER OF THE GULF OIL CO.
 HV0047'BUILDING, 1.8 METERS (6 FEET) S FROM THE SOUTH EDGE OF THE PARKING
 HV0047'LOT, AND 0.3 METER (1 FOOT) HIGHER THAN THE STATION.
 HV0047'
 HV0047'REFERENCE MARK NO. 5 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HV0047'STAMPED---EASTON 1934 NO 5 1980---SET IN A DRILL HOLE IN THE
 HV0047'NORTHEAST CORNER OF A 2 BY 2 FOOT SQUARE CONCRETE FOUNDATION FOR A 30
 HV0047'FOOT HIGH SIGN GULF.  IT PROJECTS 1 FOOT ABOVE THE SURFACE AND IS
 HV0047'LOCATED 22.40 METERS (73.5 FEET) WNW FROM THE NORTHWEST CORNER OF THE
 HV0047'OIL COMPANYS BULIDING, 14.3 METERS (47 FEET) W FROM THE CENTER OF THE
 HV0047'GATE IN THE CHAIN LINK FENCE, 2.4 METERS (8 FEET) S FROM THE SOUTH
 HV0047'EDGE OF THE PARKING LOT, 1.2 METERS (4 FEET) E FROM THE SHORE LINE,
 HV0047'AND 0.3 METER (1 FOOT) HIGHER THAN THE STATION.
 HV0047'
 HV0047'AZIMUTH MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY DISK
 HV0047'STAMPED---EASTON NO 2 1934---SET INTO THE TOP OF A SQUARE CONCRETE
 HV0047'MONUMENT 25 CM (10 INCHES) ON SIDE PROJECTING 3 CM (1 INCH) ABOVE THE
 HV0047'GROUND LOCATED 18.6 METERS (61 FEET) NW FROM A LONE 30-INCH HOLLY
 HV0047'TREE, 10.1 METERS (33 FEET) NW FROM A 36-INCH MAPLE TREE, 8.5 METERS
 HV0047'(28 FEET) SW FROM A 28-INCH MAPLE TREE, 3.0 METERS (10 FEET) NE FROM
 HV0047'THE MOST WESTERLY ONE OF SEVERAL LARGE MAPLE TREES, 7.6 METERS (25
 HV0047'FEET) SE FROM THE SHORE LINE AND BLUFF, AND 0.49 METER (1.6 FEET) NW
 HV0047'FROM A WITNESS POST.
 HV0047'
 HV0047'TO REACH THE AZIMUTH MARK FROM THE STATION, GO EAST ON STATE HIGHWAY
 HV0047'334 FOR 0.5 MILE TO THE INTERSECTION OF STATE HIGHWAYS 322 AND 334.
 HV0047'TURN RIGHT AND GO SOUTH ON STATE HIGHWAY 322 (EASTON PARKWAY) FOR 0.8
 HV0047'MILE TO A CROSSROADS.  TURN RIGHT AND GO WEST ON STATE HIGHWAY 333
 HV0047'(PEACHBLOSSOM ROAD) FOR 0.25 MILE TO A FARM ROAD ON THE RIGHT.  TURN
 HV0047'RIGHT AND GO NORTHWEST ON THE FARMROAD FOR 0.7 MILE TO THE END OF THE
 HV0047'ROAD AND THE MARK AT THE BLUFF OVERLOOKING THE SHORE LINE.
 HV0047
 HV0047                          STATION RECOVERY (1986)
 HV0047
 HV0047'RECOVERED 1986
 HV0047'RECOVERED IN GOOD CONDITION.
 HV0047
 HV0047                          STATION RECOVERY (1994)
 HV0047
 HV0047'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (JDR)
 HV0047'RECOVERED AS DESCRIBED.
 HV0047
 HV0047                          STATION RECOVERY (1996)
 HV0047
 HV0047'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 HV0047'RECOVERED AS DESCRIBED.
 HV0047
 HV0047                          STATION RECOVERY (1997)
 HV0047
 HV0047'RECOVERY NOTE BY US POWER SQUADRON 1997
 HV0047'RECOVERED IN GOOD CONDITION.
 HV0047
 HV0047                          STATION RECOVERY (2000)
 HV0047
 HV0047'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TLL)
 HV0047'GOOD.
 HV0047
 HV0047                          STATION RECOVERY (2000)
 HV0047
 HV0047'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV0047'THE MARK WAS RECOVERED IN GOOD CONDITION.  THE TO REACH SECTION OF THE
 HV0047'DESCRIPTION IS ADEQUATE.  IT IS 36.9 FEET (11.2 M) EAST OF A
 HV0047'NORTH-SOUTH BULKHEAD, 37.0 FEET (11.3 M) SOUTHWEST OF THE NORTHWEST
 HV0047'CORNER OF THE PEP-UP GAS BUILDING, 51.9 FEET (15.8 M) NORTHWEST OF THE
 HV0047'SOUTHWEST CORNER OF THE PEP-UP GAS BUILDING, 25.5 FEET (7.8 M) SOUTH
 HV0047'OF THE SOUTH EDGE OF A PAVED PARKING LOT AND ABOUT 0.5 FEET (15.2 CM)
 HV0047'BELOW THE SURFACE OF THE GROUND.
 HV0047
 HV0047                          STATION RECOVERY (2000)
 HV0047
 HV0047'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HV0047'RECOVERED IN GOOD CONDITION.
 HV0047
 HV0047                          STATION RECOVERY (2006)
 HV0047
 HV0047'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2006 (KRO)
 HV0047'RECOVERED AS DESCRIBED
 HV0047
 HV0047                          STATION RECOVERY (2008)
 HV0047
 HV0047'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2008 (KRO)
 HV0047'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0041 ***********************************************************************
 HV0041  DESIGNATION -  EASTON
 HV0041  PID         -  HV0041
 HV0041  STATE/COUNTY-  MD/TALBOT
 HV0041  COUNTRY     -  US
 HV0041  USGS QUAD   -  EASTON (2016)
 HV0041
 HV0041                         *CURRENT SURVEY CONTROL
 HV0041  ______________________________________________________________________
 HV0041* NAD 83(1986) POSITION- 38 46 35.     (N) 076 01 20.     (W)   SCALED
 HV0041* NAVD 88 ORTHO HEIGHT -    17.314 (meters)       56.80  (feet) ADJUSTED
 HV0041  ______________________________________________________________________
 HV0041  GEOID HEIGHT    -        -34.753 (meters)                     GEOID18
 HV0041  DYNAMIC HEIGHT  -         17.303 (meters)       56.77  (feet) COMP
 HV0041  MODELED GRAVITY -    980,035.1   (mgal)                       NAVD 88
 HV0041
 HV0041  VERT ORDER      -  SECOND    CLASS 0
 HV0041
 HV0041.This mark is at Easton/newnam Field Airport (ESN)
 HV0041
 HV0041.The horizontal coordinates were scaled from a map and have
 HV0041.an estimated accuracy of +/- 6 seconds.
 HV0041
 HV0041.The orthometric height was determined by differential leveling and
 HV0041.adjusted by the NATIONAL GEODETIC SURVEY
 HV0041.in June 1991.
 HV0041
 HV0041.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0041.GEOID18 height accuracy estimate available here.
 HV0041
 HV0041.Click photographs - Photos may exist for this station.
 HV0041
 HV0041.The dynamic height is computed by dividing the NAVD 88
 HV0041.geopotential number by the normal gravity value computed on the
 HV0041.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0041.degrees latitude (g = 980.6199 gals.).
 HV0041
 HV0041.The modeled gravity was interpolated from observed gravity values.
 HV0041
 HV0041;                    North         East    Units  Estimated Accuracy
 HV0041;SPC MD       -   123,640.      484,960.      MT  (+/- 180 meters Scaled)
 HV0041
 HV0041_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH112924(NAD 83)
 HV0041
 HV0041                          SUPERSEDED SURVEY CONTROL
 HV0041
 HV0041  NGVD 29 (11/26/84)   17.549  (m)           57.58   (f) ADJUSTED    2 0
 HV0041
 HV0041.Superseded values are not recommended for survey control.
 HV0041
 HV0041.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0041.See file dsdata.pdf to determine how the superseded data were derived.
 HV0041
 HV0041_MARKER: DB = BENCH MARK DISK
 HV0041_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0041_STAMPING: EASTON 1942
 HV0041_MARK LOGO: CGS
 HV0041_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0041+STABILITY: SURFACE MOTION
 HV0041
 HV0041  HISTORY     - Date     Condition        Report By
 HV0041  HISTORY     - 1942     MONUMENTED       CGS
 HV0041  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0041
 HV0041                          STATION DESCRIPTION
 HV0041
 HV0041'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0041'3.3 MI SE FROM EASTON.
 HV0041'3.3 MILES SOUTHEAST ALONG STATE HIGHWAY 331 FROM THE POST OFFICE
 HV0041'AT EASTON, TALBOT COUNTY, AT EASTON AIRPORT, 6 FEET WEST OF THE
 HV0041'SOUTH CORNER OF A BUILDING, 50.5 FEET EAST OF THE CENTERLINE
 HV0041'OF THE HIGHWAY, AND NEAR A WHITE WOODEN WITNESS POST.  A STANDARD
 HV0041'DISK, STAMPED EASTON 1942 AND SET IN THE TOP OF A CONCRETE POST.
 HV0041
 HV0041                          STATION RECOVERY (1971)
 HV0041
 HV0041'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0041'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5736 ***********************************************************************
 HV5736  DESIGNATION -  EASTON
 HV5736  PID         -  HV5736
 HV5736  STATE/COUNTY-  MD/TALBOT
 HV5736  COUNTRY     -  US
 HV5736  USGS QUAD   -  EASTON (2016)
 HV5736
 HV5736                         *CURRENT SURVEY CONTROL
 HV5736  ______________________________________________________________________
 HV5736* NAD 83(1991) POSITION- 38 47 36.34040(N) 076 07 30.38236(W)   ADJUSTED
 HV5736* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5736  ______________________________________________________________________
 HV5736  GEOID HEIGHT    -        -34.538 (meters)                     GEOID18
 HV5736  LAPLACE CORR    -         -3.87  (seconds)                    DEFLEC18
 HV5736  HORZ ORDER      -  THIRD
 HV5736
 HV5736.The horizontal coordinates were established by classical geodetic methods
 HV5736.and adjusted by the National Geodetic Survey in January 1992.
 HV5736
 HV5736.The orthometric height was scaled from a topographic map.
 HV5736
 HV5736.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5736.GEOID18 height accuracy estimate available here.
 HV5736
 HV5736.Click photographs - Photos may exist for this station.
 HV5736
 HV5736.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5736
 HV5736. The following values were computed from the NAD 83(1991) position.
 HV5736
 HV5736;                    North         East     Units Scale Factor Converg.
 HV5736;SPC MD       -   125,439.256   476,003.884   MT  0.99995088   +0 32 56.8
 HV5736;SPC MD       -   411,545.29  1,561,689.41   sFT  0.99995088   +0 32 56.8
 HV5736;UTM  18      - 4,294,454.548   402,291.066   MT  0.99971756   -0 42 17.8
 HV5736
 HV5736!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5736!SPC MD       -   1.00000530  x   0.99995088  =   0.99995618
 HV5736!UTM  18      -   1.00000530  x   0.99971756  =   0.99972286
 HV5736
 HV5736_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0229194454(NAD 83)
 HV5736
 HV5736                          SUPERSEDED SURVEY CONTROL
 HV5736
 HV5736  NAD 83(1986)-  38 47 36.33593(N)    076 07 30.39655(W) AD(       ) 3
 HV5736  NAD 27      -  38 47 35.85500(N)    076 07 31.59500(W) AD(       ) 3
 HV5736  USSD        -  38 47 36.23900(N)    076 07 31.35700(W) AD(       ) 3
 HV5736
 HV5736.Superseded values are not recommended for survey control.
 HV5736
 HV5736.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5736.See file dsdata.pdf to determine how the superseded data were derived.
 HV5736
 HV5736_MARKER: Z = SEE DESCRIPTION
 HV5736_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5736
 HV5736  HISTORY     - Date     Condition        Report By
 HV5736  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5736  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5736
 HV5736                          STATION DESCRIPTION
 HV5736
 HV5736'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5736'STATION IS ON THE SOUTHERN SIDE OF MILES RIVER, ON SOUTHEASTERN
 HV5736'APPROACH TO MILES RIVER BRIDGE, ON SW SIDE OF CRIBWORK RETAINING A
 HV5736'SHELL ROAD, 6 INCHES FROM DOWNSTREAM EDGE OF CRIBWORK, 7 YARDS SW
 HV5736'OF UPSTREAM EDGE OF CRIBWORK, 25 YARDS SE OF CORNER OF CRIBWORK
 HV5736'ABUTMENT, 30 YARDS NW OF EXTENDED LINE OF HENDERSONS SEA WALL, 9
 HV5736'YARDS SW BY S OF NAILS IN SIDE OF TELEPHONE POLE ON UPSTREAM SIDE
 HV5736'OF BRIDGE, AND 45 YARDS NW BY W OF FIRST TELEPHONE POLE SE OF
 HV5736'BRIDGE ON NORTHEASTERN SIDE OF ROAD.  STATION MARK IS A SPINDLE 1
 HV5736'INCH IN DIAMETER, ON TOP OF A 3-INCH SQUARE TIMBER.
 HV5736
 HV5736                          STATION RECOVERY (1940)
 HV5736
 HV5736'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5736'STATION MARK SEARCHED FOR BUT NOT RECOVERED.
 HV5736'
 HV5736'REFERENCE OBJECTS IN DESCRIPTION OF STATION ARE ALL DESTROYED.
 HV5736'
 HV5736'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6214 ***********************************************************************
 DL6214  DESIGNATION -  EASTON CONTROL 53
 DL6214  PID         -  DL6214
 DL6214  STATE/COUNTY-  MD/TALBOT
 DL6214  COUNTRY     -  US
 DL6214  USGS QUAD   -  EASTON (2016)
 DL6214
 DL6214                         *CURRENT SURVEY CONTROL
 DL6214  ______________________________________________________________________
 DL6214* NAD 83(2011) POSITION- 38 46 52.38455(N) 076 05 00.27867(W)   ADJUSTED
 DL6214* NAD 83(2011) ELLIP HT-   -30.157 (meters)        (06/27/12)   ADJUSTED
 DL6214* NAD 83(2011) EPOCH   -  2010.00
 DL6214* NAVD 88 ORTHO HEIGHT -     4.5   (meters)       15.    (feet) GPS OBS
 DL6214  ______________________________________________________________________
 DL6214  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DL6214  GEOID HEIGHT    -        -34.607 (meters)                     GEOID03
 DL6214  GEOID HEIGHT    -        -34.641 (meters)                     GEOID18
 DL6214  NAD 83(2011) X  -  1,197,387.142 (meters)                     COMP
 DL6214  NAD 83(2011) Y  - -4,832,416.506 (meters)                     COMP
 DL6214  NAD 83(2011) Z  -  3,973,393.878 (meters)                     COMP
 DL6214  LAPLACE CORR    -         -3.26  (seconds)                    DEFLEC18
 DL6214
 DL6214  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DL6214  Standards:
 DL6214         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DL6214            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DL6214  -------------------------------------------------------------------
 DL6214  NETWORK    0.54   1.00           0.25   0.18   0.51     -0.08336992
 DL6214  -------------------------------------------------------------------
 DL6214  Click here for local accuracies and other accuracy information.
 DL6214
 DL6214.The horizontal coordinates were established by GPS observations
 DL6214.and adjusted by the National Geodetic Survey in June 2012.
 DL6214
 DL6214.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DL6214.been affixed to the stable North American tectonic plate. See 
 DL6214.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DL6214
 DL6214.The horizontal coordinates are valid at the epoch date displayed above
 DL6214.which is a decimal equivalence of Year/Month/Day.
 DL6214
 DL6214.The orthometric height was determined by GPS observations and a
 DL6214.high-resolution geoid model.
 DL6214
 DL6214.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6214.GEOID18 height accuracy estimate available here.
 DL6214
 DL6214.Click photographs - Photos may exist for this station.
 DL6214
 DL6214.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DL6214
 DL6214.The Laplace correction was computed from DEFLEC18 derived deflections.
 DL6214
 DL6214.The ellipsoidal height was determined by GPS observations
 DL6214.and is referenced to NAD 83.
 DL6214
 DL6214. The following values were computed from the NAD 83(2011) position.
 DL6214
 DL6214;                    North         East     Units Scale Factor Converg.
 DL6214;SPC MD       -   124,119.487   479,639.548   MT  0.99995120   +0 34 31.0
 DL6214;SPC MD       -   407,215.35  1,573,617.42   sFT  0.99995120   +0 34 31.0
 DL6214;UTM  18      - 4,293,055.863   405,896.119   MT  0.99970905   -0 40 43.1
 DL6214
 DL6214!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DL6214!SPC MD       -   1.00000473  x   0.99995120  =   0.99995593
 DL6214!UTM  18      -   1.00000473  x   0.99970905  =   0.99971378
 DL6214
 DL6214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0589693055(NAD 83)
 DL6214
 DL6214                          SUPERSEDED SURVEY CONTROL
 DL6214
 DL6214  NAD 83(2007)-  38 46 52.38488(N)    076 05 00.27959(W) AD(2002.00) 1
 DL6214  ELLIP H (01/14/10)  -30.128  (m)                       GP(2002.00) 4 1
 DL6214
 DL6214.Superseded values are not recommended for survey control.
 DL6214
 DL6214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DL6214.See file dsdata.pdf to determine how the superseded data were derived.
 DL6214
 DL6214_MARKER: DD = SURVEY DISK
 DL6214_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6214_STAMPING: GPS 053
 DL6214_MARK LOGO: MD0480
 DL6214_PROJECTION: FLUSH
 DL6214_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 DL6214_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6214+STABILITY: SURFACE MOTION
 DL6214_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6214+SATELLITE: SATELLITE OBSERVATIONS - July 21, 2017
 DL6214
 DL6214  HISTORY     - Date     Condition        Report By
 DL6214  HISTORY     - 20080101 MONUMENTED       MCCRON
 DL6214  HISTORY     - 20170721 GOOD             BASE9
 DL6214
 DL6214                          STATION DESCRIPTION
 DL6214
 DL6214'DESCRIBED BY J R MCCRONE JR INCORPORATED 2008 (BWF)
 DL6214'STATION IS LOCATED 0.6 MI (1.0 KM) WEST OF THE CENTER OF EASTON ON
 DL6214'MARYLAND STATE HIGHWAY 322 RIGHT-OF-WAY.
 DL6214'
 DL6214'FROM THE INTERSECTION OF MARYLAND ROUTE 50 AND MARYLAND ROUTE 322
 DL6214'(EASTON PARKWAY) IN EASTON MARYLAND, GO SOUTHWESTERLY ON MARYLAND
 DL6214'ROUTE 322 FOR 1.8 MI (2.4 KM) TO THE INTERSECTION OF MARYLAND ROUTE
 DL6214'322 AND MARLBORO AVENUE. CONTINUE 0.02 MI (0.3 KM) TO THE STATION ON
 DL6214'THE RIGHT.
 DL6214'
 DL6214'THIS STATION IS A TOWN OF EASTON DISK, STAMPED GPS 53 SET IN A TOP OF
 DL6214'A 12 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS
 DL6214'69.5 FT (21.2 M) SOUTH OF TRAFFIC SIGNAL POLE, 18.2 FT (5.5 M) WEST OF
 DL6214'THE WESTERLY END OF CONCRETE CURB, 17.0 FT (5.2 M) SOUTH EAST OF THE
 DL6214'SOUTH EAST EDGE OF THE TOP OF DRAINAGE DITCH THAT RUNS NE-SW.
 DL6214
 DL6214                          STATION RECOVERY (2017)
 DL6214
 DL6214'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 DL6214'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6215 ***********************************************************************
 DL6215  DESIGNATION -  EASTON CONTROL 54
 DL6215  PID         -  DL6215
 DL6215  STATE/COUNTY-  MD/TALBOT
 DL6215  COUNTRY     -  US
 DL6215  USGS QUAD   -  EASTON (2016)
 DL6215
 DL6215                         *CURRENT SURVEY CONTROL
 DL6215  ______________________________________________________________________
 DL6215* NAD 83(2011) POSITION- 38 46 39.01467(N) 076 05 09.25855(W)   ADJUSTED
 DL6215* NAD 83(2011) ELLIP HT-   -32.607 (meters)        (06/27/12)   ADJUSTED
 DL6215* NAD 83(2011) EPOCH   -  2010.00
 DL6215* NAVD 88 ORTHO HEIGHT -     3.1   (meters)       10.    (feet) GPS OBS
 DL6215  ______________________________________________________________________
 DL6215  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DL6215  GEOID HEIGHT    -        -35.627 (meters)                     GEOID03
 DL6215  GEOID HEIGHT    -        -34.644 (meters)                     GEOID18
 DL6215  NAD 83(2011) X  -  1,197,238.392 (meters)                     COMP
 DL6215  NAD 83(2011) Y  - -4,832,717.419 (meters)                     COMP
 DL6215  NAD 83(2011) Z  -  3,973,070.947 (meters)                     COMP
 DL6215  LAPLACE CORR    -         -3.29  (seconds)                    DEFLEC18
 DL6215
 DL6215  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DL6215  Standards:
 DL6215         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DL6215            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DL6215  -------------------------------------------------------------------
 DL6215  NETWORK    0.56   1.06           0.26   0.18   0.54     -0.11285554
 DL6215  -------------------------------------------------------------------
 DL6215  Click here for local accuracies and other accuracy information.
 DL6215
 DL6215.The horizontal coordinates were established by GPS observations
 DL6215.and adjusted by the National Geodetic Survey in June 2012.
 DL6215
 DL6215.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DL6215.been affixed to the stable North American tectonic plate. See 
 DL6215.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DL6215
 DL6215.The horizontal coordinates are valid at the epoch date displayed above
 DL6215.which is a decimal equivalence of Year/Month/Day.
 DL6215
 DL6215.The orthometric height was determined by GPS observations and a
 DL6215.high-resolution geoid model.
 DL6215
 DL6215.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6215.GEOID18 height accuracy estimate available here.
 DL6215
 DL6215.Click photographs - Photos may exist for this station.
 DL6215
 DL6215.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DL6215
 DL6215.The Laplace correction was computed from DEFLEC18 derived deflections.
 DL6215
 DL6215.The ellipsoidal height was determined by GPS observations
 DL6215.and is referenced to NAD 83.
 DL6215
 DL6215. The following values were computed from the NAD 83(2011) position.
 DL6215
 DL6215;                    North         East     Units Scale Factor Converg.
 DL6215;SPC MD       -   123,705.075   479,426.952   MT  0.99995131   +0 34 25.4
 DL6215;SPC MD       -   405,855.73  1,572,919.93   sFT  0.99995131   +0 34 25.4
 DL6215;UTM  18      - 4,292,646.301   405,674.559   MT  0.99970956   -0 40 48.5
 DL6215
 DL6215!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DL6215!SPC MD       -   1.00000512  x   0.99995131  =   0.99995643
 DL6215!UTM  18      -   1.00000512  x   0.99970956  =   0.99971467
 DL6215
 DL6215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0567492646(NAD 83)
 DL6215
 DL6215                          SUPERSEDED SURVEY CONTROL
 DL6215
 DL6215  NAD 83(2007)-  38 46 39.01500(N)    076 05 09.25946(W) AD(2002.00) 1
 DL6215  ELLIP H (01/14/10)  -32.580  (m)                       GP(2002.00) 4 1
 DL6215
 DL6215.Superseded values are not recommended for survey control.
 DL6215
 DL6215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DL6215.See file dsdata.pdf to determine how the superseded data were derived.
 DL6215
 DL6215_MARKER: DD = SURVEY DISK
 DL6215_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6215_STAMPING: NO. GPS 054
 DL6215_MARK LOGO: MD0480
 DL6215_PROJECTION: FLUSH
 DL6215_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 DL6215_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6215+STABILITY: SURFACE MOTION
 DL6215_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6215+SATELLITE: SATELLITE OBSERVATIONS - January 01, 2008
 DL6215
 DL6215  HISTORY     - Date     Condition        Report By
 DL6215  HISTORY     - 20080101 MONUMENTED       MCCRON
 DL6215
 DL6215                          STATION DESCRIPTION
 DL6215
 DL6215'DESCRIBED BY J R MCCRONE JR INCORPORATED 2008 (BWF)
 DL6215'STATION IS LOCATED 2.1 MI (3.3 KM) NORTH WEST OF THE CENTER OF EASTON
 DL6215'ON MARYLAND HIGHWAY 322 RIGHT-OF-WAY.
 DL6215'
 DL6215'TO REACH FROM THE INTERSECTION OF MARYLAND ROUTE 50 AND MARYLAND ROUTE
 DL6215'322 (EASTON PARKWAY) IN EASTON MARYLAND, GO SOUTHWESTERLY ON MARYLAND
 DL6215'ROUTE 322 FOR 2.1 MI (3.3 KM) TO THE INTERSECTION OF MARYLAND ROUTE
 DL6215'322 (EASTON PARKWAY) AND MARYLAND ROUTE 33 (ST. MICHAELS ROAD).
 DL6215'CONTINUE 0.03 MI (0.04 KM) THROUGH THE INTERSECTION TO STATION ON THE
 DL6215'RIGHT IN THE GROUND.
 DL6215'
 DL6215'THIS STATION IS A TOWN OF EASTON DISK, STAMPED GPS 054 SET IN A THE
 DL6215'TOP OF A 12 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 DL6215'IT IS 90.0 FT (27.4 M) SOUTH EAST OF THE SOUTHERLY END OF THE MIDDLE
 DL6215'ONE OF THREE 78 IN DIAMETER CORRUGATED METAL PIPES, 44.1 FT (13.4 M)
 DL6215'NORTH THE SOUTHERLY END OF THE GUARD RAIL ALONG MARYLAND ROUTE 322,
 DL6215'20.1 FT (6.1 M) NORTH WEST OF THE WESTERLY EDGE OF PAVEMENT OF
 DL6215'MARYLAND ROUTE 322.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0048 ***********************************************************************
 HV0048  DESIGNATION -  EASTON RM 1
 HV0048  PID         -  HV0048
 HV0048  STATE/COUNTY-  MD/TALBOT
 HV0048  COUNTRY     -  US
 HV0048  USGS QUAD   -  EASTON (2016)
 HV0048
 HV0048                         *CURRENT SURVEY CONTROL
 HV0048  ______________________________________________________________________
 HV0048* NAD 83(1986) POSITION- 38 46 02.50   (N) 076 05 38.70   (W)   HD_HELD1
 HV0048* NAVD 88 ORTHO HEIGHT -     0.670 (meters)        2.20  (feet) ADJUSTED
 HV0048  ______________________________________________________________________
 HV0048  GEOID HEIGHT    -        -34.649 (meters)                     GEOID18
 HV0048  DYNAMIC HEIGHT  -          0.669 (meters)        2.19  (feet) COMP
 HV0048  MODELED GRAVITY -    980,036.3   (mgal)                       NAVD 88
 HV0048
 HV0048  VERT ORDER      -  FIRST     CLASS II
 HV0048
 HV0048.The horizontal coordinates were determined by differentially corrected
 HV0048.hand held GPS observations or other comparable positioning techniques
 HV0048.and have an estimated accuracy of +/- 3 meters.
 HV0048
 HV0048.The orthometric height was determined by differential leveling and
 HV0048.adjusted by the NATIONAL GEODETIC SURVEY
 HV0048.in June 1991.
 HV0048
 HV0048.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0048.GEOID18 height accuracy estimate available here.
 HV0048
 HV0048.Click photographs - Photos may exist for this station.
 HV0048
 HV0048.The dynamic height is computed by dividing the NAVD 88
 HV0048.geopotential number by the normal gravity value computed on the
 HV0048.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0048.degrees latitude (g = 980.6199 gals.).
 HV0048
 HV0048.The modeled gravity was interpolated from observed gravity values.
 HV0048
 HV0048;                    North         East    Units  Estimated Accuracy
 HV0048;SPC MD       -   122,572.1     478,727.5     MT  (+/- 3 meters HH1 GPS) 
 HV0048
 HV0048_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0495091529(NAD 83)
 HV0048
 HV0048                          SUPERSEDED SURVEY CONTROL
 HV0048
 HV0048  NGVD 29 (11/26/84)    0.908  (m)            2.98   (f) ADJUSTED    1 2
 HV0048
 HV0048.Superseded values are not recommended for survey control.
 HV0048
 HV0048.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0048.See file dsdata.pdf to determine how the superseded data were derived.
 HV0048
 HV0048_MARKER: DR = REFERENCE MARK DISK
 HV0048_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0048_STAMPING: EASTON NO 1 1934
 HV0048_MARK LOGO: CGS
 HV0048_PROJECTION: PROJECTING 15 CENTIMETERS
 HV0048_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0048+STABILITY: SURFACE MOTION
 HV0048
 HV0048  HISTORY     - Date     Condition        Report By
 HV0048  HISTORY     - 1934     MONUMENTED       CGS
 HV0048  HISTORY     - 1971     GOOD             NGS
 HV0048  HISTORY     - 19970110 MARK NOT FOUND   USPSQD
 HV0048  HISTORY     - 20011203 MARK NOT FOUND   MDSHA
 HV0048  HISTORY     - 20020312 MARK NOT FOUND   USPSQD
 HV0048
 HV0048                          STATION DESCRIPTION
 HV0048
 HV0048'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0048'1.2 MI SE FROM EASTON.
 HV0048'ABOUT 0.15 MILE SOUTH ALONG WASHINGTON STREET FROM THE COURTHOUSE
 HV0048'AT EASTON, THENCE 1.1 MILES WEST ALONG PORT STREET, AT EASTON
 HV0048'POINT, 294 FEET SOUTH OF THE CENTER LINE OF PORT STREET, 27.5
 HV0048'FEET EAST OF THE NORTHWEST CORNER OF A WAREHOUSE, 38 FEET EAST
 HV0048'OF THE WEST END OF A STEEL FENCE AT THE WATER EDGE OF TRED AVON
 HV0048'RIVER, 3 FEET NORTH OF THE NORTH FACE OF A WAREHOUSE, 1.1 FEET
 HV0048'NORTH OF A STEEL FENCE, 161.7 FEET SOUTHEAST OF THE STATION MARK
 HV0048'DESCRIBED, ABOUT LEVEL WITH THE STREET AND SET IN THE TOP OF A
 HV0048'CONCRETE POST PROJECTING 6 INCHES ABOVE THE LEVEL OF THE GROUND.
 HV0048
 HV0048                          STATION RECOVERY (1997)
 HV0048
 HV0048'RECOVERY NOTE BY US POWER SQUADRON 1997
 HV0048'MARK NOT FOUND.
 HV0048
 HV0048                          STATION RECOVERY (2001)
 HV0048
 HV0048'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HV0048'THE MARK WAS SEARCHED FOR AND NOT RECOVERED.
 HV0048
 HV0048                          STATION RECOVERY (2002)
 HV0048
 HV0048'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0048'REFERENCED N FACE OF A WAREHOUSE DOES NOT EXIST, 1/2 OF WAREHOUSE HAS
 HV0048'BEEN REMOVED.  EXTENSIVE PROBING AND DIGGING FAILED TO RECOVER THE
 HV0048'MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8908 ***********************************************************************
 HV8908  DESIGNATION -  EASTON RM 2 AZ MK
 HV8908  PID         -  HV8908
 HV8908  STATE/COUNTY-  MD/TALBOT
 HV8908  COUNTRY     -  US
 HV8908  USGS QUAD   -  EASTON (2016)
 HV8908
 HV8908                         *CURRENT SURVEY CONTROL
 HV8908  ______________________________________________________________________
 HV8908* NAD 83(1986) POSITION- 38 45 49.9    (N) 076 05 26.9    (W)   HD_HELD2
 HV8908* NAVD 88 ORTHO HEIGHT -     6.108 (meters)       20.04  (feet) ADJUSTED
 HV8908  ______________________________________________________________________
 HV8908  GEOID HEIGHT    -        -34.662 (meters)                     GEOID18
 HV8908  DYNAMIC HEIGHT  -          6.105 (meters)       20.03  (feet) COMP
 HV8908  MODELED GRAVITY -    980,035.7   (mgal)                       NAVD 88
 HV8908
 HV8908  VERT ORDER      -  SECOND    CLASS I
 HV8908
 HV8908.The horizontal coordinates were established by autonomous hand held GPS
 HV8908.observations and have an estimated accuracy of +/- 10 meters.
 HV8908
 HV8908.The orthometric height was determined by differential leveling and
 HV8908.adjusted by the NATIONAL GEODETIC SURVEY
 HV8908.in September 2004.
 HV8908
 HV8908.No vertical observational check was made to the station.
 HV8908
 HV8908.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8908.GEOID18 height accuracy estimate available here.
 HV8908
 HV8908.Click photographs - Photos may exist for this station.
 HV8908
 HV8908.The dynamic height is computed by dividing the NAVD 88
 HV8908.geopotential number by the normal gravity value computed on the
 HV8908.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8908.degrees latitude (g = 980.6199 gals.).
 HV8908
 HV8908.The modeled gravity was interpolated from observed gravity values.
 HV8908
 HV8908;                    North         East    Units  Estimated Accuracy
 HV8908;SPC MD       -   122,186.      479,016.      MT  (+/- 10 meters HH2 GPS)
 HV8908
 HV8908_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0523091137(NAD 83)
 HV8908
 HV8908                          SUPERSEDED SURVEY CONTROL
 HV8908
 HV8908.No superseded survey control is available for this station.
 HV8908
 HV8908_MARKER: DR = REFERENCE MARK DISK
 HV8908_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8908_STAMPING: EASTON NO 2 1934
 HV8908_MARK LOGO: CGS
 HV8908_PROJECTION: PROJECTING 3 CENTIMETERS
 HV8908_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8908_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8908+STABILITY: SURFACE MOTION
 HV8908_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8908+SATELLITE: SATELLITE OBSERVATIONS - November 14, 2006
 HV8908
 HV8908  HISTORY     - Date     Condition        Report By
 HV8908  HISTORY     - 1934     MONUMENTED       CGS
 HV8908  HISTORY     - 19800710 GOOD             NGS
 HV8908  HISTORY     - 20000915 GOOD             MDSHA
 HV8908  HISTORY     - 20061114 GOOD             USPSQD
 HV8908
 HV8908                          STATION DESCRIPTION
 HV8908
 HV8908'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 HV8908'THIS POINT IS LOCATED ABOUT 2.0 KM (1.25 MI) WEST OF EASTON, ON THE
 HV8908'EAST BANK OF THE TRED AVON RIVER AND JUST SOUTH OF EASTON POINT.
 HV8908'
 HV8908'TO REACH FROM THE COURT HOUSE IN EASTON, GO SOUTH ON WASHINGTON STREET
 HV8908'FOR 0.25 KM (0.15 MI) TO A CROSSROADS.  TURN RIGHT AND GO WEST ON
 HV8908'STATE HIGHWAY 344, ALSO KNOWN AS PORT STREET, FOR 1.05 KM (0.65 MI)
 HV8908'TO A CROSSROADS AT THE INTERSECTION OF STATE HIGHWAYS 322 AND 334.
 HV8908'TURN LEFT AND GO SOUTH ON STATE HIGHWAY 322 FOR 1.3 KM (0.80 MI) TO A
 HV8908'CROSSROADS.  TURN RIGHT AND GO WEST ON STATE HIGHWAY 333 FOR 0.4 KM
 HV8908'(0.25 MI) TO A FARM ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTHWEST ON
 HV8908'THE FARM ROAD FOR 1.13 KM (0.70 MI) TO THE END OF THE ROAD AND THE
 HV8908'MARK.
 HV8908'
 HV8908'THE DISK IS SET IN THE TOP OF THE 0.25 M (0.8 FT) POST WHICH PROJECTS
 HV8908'0.03 M (0.1 FT) ABOVE THE SURFACE OF THE GROUND.  IT IS 18.59 M
 HV8908'(61.0 FT) NORTHWEST OF A LONE 1.0 M (3.3 FT) HOLLY TREE, 10.06 M
 HV8908'(33.0 FT) NORTHWEST OF A 1.0 M (3.3 FT) MAPLE TREE, 8.53 M (28.0 FT)
 HV8908'SOUTHWEST OF A 0.7 M (2.3 FT) MAPLE TREE, 3.05 M (10.0 FT) NORTHEAST
 HV8908'OF THE MOST WESTERLY ONE OF SEVERAL LARGE MAPLE TREES, 7.62 M
 HV8908'(25.0 FT) SOUTHEAST OF THE SHORE LINE AND 0.49 M (1.6 FT) NORTHWEST OF
 HV8908'A WITNESS POST.
 HV8908
 HV8908                          STATION RECOVERY (2000)
 HV8908
 HV8908'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV8908'THE MARK IS LOCATED ABOUT 4.7 MI (7.56 KM) EAST OF NEWCOMB, 4.4 MI
 HV8908'(7.08 KM) SOUTHEAST OF UNIONVILLE AND 1.0 MI (1.61 KM) SOUTHWEST OF
 HV8908'EASTON.
 HV8908'
 HV8908'TO REACH THE MARK FROM THE COURTHOUSE IN EASTON, GO SOUTH ALONG
 HV8908'WASHINGTON STREET FOR 0.7 MILES (1.1 KM) TO STATE HIGHWAY 333
 HV8908'(PEACHBLOSSOM ROAD).  TURN RIGHT AND GO SOUTHWEST ALONG STATE HIGHWAY
 HV8908'333 FOR 0.4 MILES (0.6 KM) TO STATE HIGHWAY 322.  CONTINUE SOUTHWEST
 HV8908'ALONG STATE HIGHWAY 333 FOR 0.2 MILES (0.3 KM) TO CLUBHOUSE DRIVE.
 HV8908'TURN RIGHT AND GO NORTHWEST FOR 0.6 MILES (1.0 KM) TO A
 HV8908'T-INTERSECTION.  TURN LEFT AND PROCEED TO THE NORTHWEST CORNER OF A
 HV8908'MACADAM PARKING LOT FOR THE EASTON CLUB AND THE MARK LOCATED IN A
 HV8908'GRASS AREA BETWEEN THE PARKING LOT AND THE TOP OF THE BLUFF.
 HV8908'
 HV8908'IT IS 40.8 FEET (12.4 M) NORTH OF A METAL LAMP POST, 60.2 FEET
 HV8908'(18.3 M) WEST OF A METAL LAMP POST, 61.0 FEET (18.6 M) NORTHWEST OF A
 HV8908'LONE 24 INCH (61 CM) HOLLY, 94.7 FEET (28.9 M) NORTH OF THE NORTHEAST
 HV8908'CORNER OF THE EAGLE POINT PAVILLON, 30.0 FEET (9.1 M) SOUTHEAST OF THE
 HV8908'TOP OF THE BLUFF AND 1.5 FEET (0.5 M) NORTH OF A METAL WITNESS POST
 HV8908'AND SIGN.  IT IS A CGS DISK SET IN THE TOP OF A 12 INCH (30 CM)
 HV8908'SQUARE CONCRETE MONUMENT PROJECTING 2 INCHES (5 CM).
 HV8908
 HV8908                          STATION RECOVERY (2006)
 HV8908
 HV8908'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV8908'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7939 ***********************************************************************
 HV7939  DESIGNATION -  EASTON RM 4
 HV7939  PID         -  HV7939
 HV7939  STATE/COUNTY-  MD/TALBOT
 HV7939  COUNTRY     -  US
 HV7939  USGS QUAD   -  EASTON (2016)
 HV7939
 HV7939                         *CURRENT SURVEY CONTROL
 HV7939  ______________________________________________________________________
 HV7939* NAD 83(1991) POSITION- 38 46 03.94096(N) 076 05 39.93588(W)   ADJUSTED
 HV7939* NAVD 88 ORTHO HEIGHT -     1.005 (meters)        3.30  (feet) ADJUSTED
 HV7939  ______________________________________________________________________
 HV7939  GEOID HEIGHT    -        -34.648 (meters)                     GEOID18
 HV7939  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 HV7939  DYNAMIC HEIGHT  -          1.005 (meters)        3.30  (feet) COMP
 HV7939  MODELED GRAVITY -    980,036.3   (mgal)                       NAVD 88
 HV7939
 HV7939  HORZ ORDER      -  THIRD
 HV7939  VERT ORDER      -  SECOND    CLASS I
 HV7939
 HV7939.The horizontal coordinates were established by classical geodetic methods
 HV7939.and adjusted by the National Geodetic Survey in January 1992.
 HV7939
 HV7939.The orthometric height was determined by differential leveling and
 HV7939.adjusted by the NATIONAL GEODETIC SURVEY
 HV7939.in September 2004.
 HV7939
 HV7939.No vertical observational check was made to the station.
 HV7939
 HV7939.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7939.GEOID18 height accuracy estimate available here.
 HV7939
 HV7939.Click photographs - Photos may exist for this station.
 HV7939
 HV7939.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7939
 HV7939.The dynamic height is computed by dividing the NAVD 88
 HV7939.geopotential number by the normal gravity value computed on the
 HV7939.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7939.degrees latitude (g = 980.6199 gals.).
 HV7939
 HV7939.The modeled gravity was interpolated from observed gravity values.
 HV7939
 HV7939. The following values were computed from the NAD 83(1991) position.
 HV7939
 HV7939;                    North         East     Units Scale Factor Converg.
 HV7939;SPC MD       -   122,616.253   478,697.261   MT  0.99995162   +0 34 06.1
 HV7939;SPC MD       -   402,283.49  1,570,525.93   sFT  0.99995162   +0 34 06.1
 HV7939;UTM  18      - 4,291,573.965   404,921.400   MT  0.99971132   -0 41 07.2
 HV7939
 HV7939!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7939!SPC MD       -   1.00000528  x   0.99995162  =   0.99995690
 HV7939!UTM  18      -   1.00000528  x   0.99971132  =   0.99971660
 HV7939
 HV7939_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0492191573(NAD 83)
 HV7939
 HV7939                          SUPERSEDED SURVEY CONTROL
 HV7939
 HV7939  NAD 83(1986)-  38 46 03.93867(N)    076 05 39.95123(W) AD(       ) 3
 HV7939  NGVD 29 (??/??/??)    1.37   (m)            4.5    (f) RESET       3  
 HV7939  NGVD 29               1.36   (m)            4.5    (f) LEVELING    3  
 HV7939
 HV7939.Superseded values are not recommended for survey control.
 HV7939
 HV7939.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7939.See file dsdata.pdf to determine how the superseded data were derived.
 HV7939
 HV7939_MARKER: DR = REFERENCE MARK DISK
 HV7939_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV7939_SP_SET: GAS ISLAND
 HV7939_STAMPING: EASTON 1934 NO 4 1980
 HV7939_MARK LOGO: NGS
 HV7939_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV7939_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7939_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7939+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2006
 HV7939
 HV7939  HISTORY     - Date     Condition        Report By
 HV7939  HISTORY     - 1980     MONUMENTED       NGS
 HV7939  HISTORY     - 19970110 GOOD             USPSQD
 HV7939  HISTORY     - 20000818 GOOD             MDSHA
 HV7939  HISTORY     - 20020312 GOOD             USPSQD
 HV7939  HISTORY     - 20061129 GOOD             USPSQD
 HV7939
 HV7939                          STATION DESCRIPTION
 HV7939
 HV7939'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980 (RGP)
 HV7939'1.25 MI SW FROM EASTON.
 HV7939'ABOUT 0.5 MILE WEST ALONG ST HIGHWAY 334 (PORT STREET) FROM ITS JCT
 HV7939'WITH ST HIGHWAY 322 (EASTON PARKWAY), ABOUT 50 YARDS SOUTH OF A
 HV7939'POINT WHERE PORT STREET ENDS AT EASTON POINT, 85 FEET EAST OF
 HV7939'THE SHORE LINE AND BULKHEAD, 35 FEET EAST OF THE CENTER OF A CHAIN
 HV7939'LINK GATE, 15 FEET NORTH OF THE NW CORNER OF A GULF OIL COMPANY
 HV7939'OFFICE BUILDING, 6 FEET SOUTH OF THE SOUTH EDGE OF A PAVED
 HV7939'PARKING LOT AND 2 FEET EAST OF THE EAST END OF A CHAIN LINK FENCE.
 HV7939'NOTE--MARK IS 49.6 FEET WEST OF BENCH MARK EASTON.
 HV7939
 HV7939                          STATION RECOVERY (1997)
 HV7939
 HV7939'RECOVERY NOTE BY US POWER SQUADRON 1997
 HV7939'RECOVERED IN GOOD CONDITION.
 HV7939
 HV7939                          STATION RECOVERY (2000)
 HV7939
 HV7939'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV7939'THE MARK IS LOCATED ABOUT 4.5 MI (7.24 KM) EAST-NORTHEAST OF NEWCOMB,
 HV7939'4.0 MI (6.44 KM) SOUTHEAST OF UNIONVILLE AND 1.1 MI (1.77 KM)
 HV7939'WEST-SOUTHWEST OF EASTON.  TO REACH THE MARK FROM THE POST OFFICE IN
 HV7939'EASTON, GO WEST ALONG DOVER STREET FOR 0.14 MILES (0.23 KM) TO
 HV7939'WASHINGTON STREET.  TURN LEFT AND GO SOUTH FOR 0.12 MILES (0.19 KM) TO
 HV7939'PORT STREET.  TURN RIGHT AND GO SOUTHWEST ALONG PORT STREET FOR 0.6
 HV7939'MILES (1.0 KM) TO STATE HIGHWAY 322 (EASTON PARKWAY).  CONTINUE
 HV7939'SOUTHWEST ALONG PORT STREET FOR 0.4 MILES (0.6 KM) TO ROADS END AND
 HV7939'THE MARK ON THE LEFT.  IT IS 15.0 FEET (4.6 M) NORTH OF THE NORTHWEST
 HV7939'CORNER OF THE PEP-UP GAS STATION, 24.2 FEET (7.4 M) SOUTHEAST OF THE
 HV7939'NORTHWEST CORNER OF A CONCRETE CAR PAD, 82.0 FEET (25.0 M) WEST OF RM
 HV7939'5 AND 3.2 FEET (1.0 M) NORTHEAST OF THE SOUTHWEST END OF THE CONCRETE
 HV7939'GAS ISLAND. IT IS A NGS RM DISK SET IN A DRILL HOLE AT THE SOUTHWEST
 HV7939'END OF A CONCRETE GAS ISLAND.
 HV7939
 HV7939                          STATION RECOVERY (2002)
 HV7939
 HV7939'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV7939'REFERENCED CHAIN LINK GATE DOES NOT EXIST. GULF OIL BUILDING IS NOW
 HV7939'PEP UP INC. REFERENCED PAVED PARKING EXTENSIVELY ENLARGED. MARK IS SET
 HV7939'IN THE W END OF THE FUEL PUMP ISLAND, .7 FT NE OF W GALVANIZED CANOPY
 HV7939'SUPPORT POST.
 HV7939
 HV7939                          STATION RECOVERY (2006)
 HV7939
 HV7939'RECOVERY NOTE BY US POWER SQUADRON 2006 (CPS)
 HV7939'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7940 ***********************************************************************
 HV7940  DESIGNATION -  EASTON RM 5
 HV7940  PID         -  HV7940
 HV7940  STATE/COUNTY-  MD/TALBOT
 HV7940  COUNTRY     -  US
 HV7940  USGS QUAD   -  EASTON (2016)
 HV7940
 HV7940                         *CURRENT SURVEY CONTROL
 HV7940  ______________________________________________________________________
 HV7940* NAD 83(1991) POSITION- 38 46 03.51659(N) 076 05 40.81755(W)   ADJUSTED
 HV7940* NAVD 88 ORTHO HEIGHT -     1.211 (meters)        3.97  (feet) ADJUSTED
 HV7940  ______________________________________________________________________
 HV7940  GEOID HEIGHT    -        -34.648 (meters)                     GEOID18
 HV7940  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 HV7940  DYNAMIC HEIGHT  -          1.210 (meters)        3.97  (feet) COMP
 HV7940  MODELED GRAVITY -    980,036.3   (mgal)                       NAVD 88
 HV7940
 HV7940  HORZ ORDER      -  THIRD
 HV7940  VERT ORDER      -  SECOND    CLASS I
 HV7940
 HV7940.The horizontal coordinates were established by classical geodetic methods
 HV7940.and adjusted by the National Geodetic Survey in January 1992.
 HV7940
 HV7940.The orthometric height was determined by differential leveling and
 HV7940.adjusted by the NATIONAL GEODETIC SURVEY
 HV7940.in September 2004.
 HV7940
 HV7940.No vertical observational check was made to the station.
 HV7940
 HV7940.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7940.GEOID18 height accuracy estimate available here.
 HV7940
 HV7940.Click photographs - Photos may exist for this station.
 HV7940
 HV7940.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7940
 HV7940.The dynamic height is computed by dividing the NAVD 88
 HV7940.geopotential number by the normal gravity value computed on the
 HV7940.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7940.degrees latitude (g = 980.6199 gals.).
 HV7940
 HV7940.The modeled gravity was interpolated from observed gravity values.
 HV7940
 HV7940. The following values were computed from the NAD 83(1991) position.
 HV7940
 HV7940;                    North         East     Units Scale Factor Converg.
 HV7940;SPC MD       -   122,602.957   478,676.108   MT  0.99995162   +0 34 05.6
 HV7940;SPC MD       -   402,239.87  1,570,456.53   sFT  0.99995162   +0 34 05.6
 HV7940;UTM  18      - 4,291,561.138   404,899.967   MT  0.99971137   -0 41 07.8
 HV7940
 HV7940!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7940!SPC MD       -   1.00000525  x   0.99995162  =   0.99995687
 HV7940!UTM  18      -   1.00000525  x   0.99971137  =   0.99971661
 HV7940
 HV7940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0489991561(NAD 83)
 HV7940
 HV7940                          SUPERSEDED SURVEY CONTROL
 HV7940
 HV7940  NAD 83(1986)-  38 46 03.51430(N)    076 05 40.83287(W) AD(       ) 3
 HV7940  NGVD 29 (??/??/??)    1.54   (m)            5.1    (f) RESET       3  
 HV7940  NGVD 29               1.54   (m)            5.1    (f) LEVELING    3  
 HV7940
 HV7940.Superseded values are not recommended for survey control.
 HV7940
 HV7940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7940.See file dsdata.pdf to determine how the superseded data were derived.
 HV7940
 HV7940_MARKER: DR = REFERENCE MARK DISK
 HV7940_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV7940+WITH SETTING: PAVEMENT
 HV7940_SP_SET: SIGN BASE
 HV7940_STAMPING: EASTON 1934 NO 5 1980
 HV7940_MARK LOGO: NGS
 HV7940_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV7940_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7940+STABILITY: SURFACE MOTION
 HV7940_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7940+SATELLITE: SATELLITE OBSERVATIONS - November 14, 2006
 HV7940
 HV7940  HISTORY     - Date     Condition        Report By
 HV7940  HISTORY     - 1980     MONUMENTED       NGS
 HV7940  HISTORY     - 19970111 MARK NOT FOUND   USPSQD
 HV7940  HISTORY     - 20000818 GOOD             MDSHA
 HV7940  HISTORY     - 20020312 GOOD             USPSQD
 HV7940  HISTORY     - 20061114 GOOD             USPSQD
 HV7940
 HV7940                          STATION DESCRIPTION
 HV7940
 HV7940'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980 (RGP)
 HV7940'1.25 MI SW FROM EASTON.
 HV7940'ABOUT 0.5 MILE WEST ALONG ST HIGHWAY 334 (PORT STREET) FROM ITS JCT
 HV7940'WITH ST HIGHWAY 322 (EASTON PARKWAY), ABOUT 50 YARDS SOUTH OF PORT
 HV7940'STREET, 73.5 FEET WSW OF THE NW CORNER OF A GULF OIL COMPANY OFFICE
 HV7940'BUILDING, 47 FEET WEST OF THE CENTER OF A CHAIN LINK GATE, 8 FEET
 HV7940'SOUTH OF THE SOUTH EDGE OF A PARKING LOT, 6 FEET SE OF THE WEST END
 HV7940'OF A CHAIN LINK FENCE AND 4 FEET EAST OF THE SHORE LINE AND BULK
 HV7940'HEAD OF EASTON POINT, IN A GULF GAS SIGN, IN THE CONCRETE BASE.
 HV7940'NOTE--MARK IS 43.4 FEET NNE OF BENCH MARK EASTON.
 HV7940
 HV7940                          STATION RECOVERY (1997)
 HV7940
 HV7940'RECOVERY NOTE BY US POWER SQUADRON 1997
 HV7940'MARK NOT FOUND.
 HV7940
 HV7940                          STATION RECOVERY (2000)
 HV7940
 HV7940'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV7940'THE MARK IS LOCATED ABOUT 4.5 MI (7.24 KM) EAST-NORTHEAST OF NEWCOMB,
 HV7940'4.0 MI (6.44 KM) SOUTHEAST OF UNIONVILLE AND 1.1 MI (1.77 KM)
 HV7940'WEST-SOUTHWEST OF EASTON.  TO REACH THE MARK FROM THE POST OFFICE IN
 HV7940'EASTON, GO WEST ALONG DOVER STREET FOR 0.14 MILES (0.23 KM) TO
 HV7940'WASHINGTON STREET.  TURN LEFT AND GO SOUTH FOR 0.12 MILES (0.19 KM) TO
 HV7940'PORT STREET.  TURN RIGHT AND GO SOUTHWEST ALONG PORT STREET FOR 0.6
 HV7940'MILES (1.0 KM) TO STATE HIGHWAY 322 (EASTON PARKWAY) .  CONTINUE
 HV7940'SOUTHWEST ALONG PORT STREET FOR 0.4 MILES (0.6 KM) TO THE ROADS END
 HV7940'AND THE MARK ON THE LEFT.  IT IS 7.6 FEET (2.3 M) WEST OF A
 HV7940'NORTH-SOUTH BULKHEAD, 43.5 FEET (13.3 M) NORTHWEST OF MARK EASTON
 HV7940'1934, 74.1 FEET (22.6 M) WEST OF THE NORTHWEST CORNER OF THE PEP-UP
 HV7940'GAS BUILDING AND 91.5 FEET (27.9 M) NORTHWEST OF THE SOUTHWST CORNER
 HV7940'OF THE PEP-UP GAS BUILDING.  IT IS A NGS RM DISK SET IN A DRILL HOLE
 HV7940'IN A CONCRETE SIGN BASE ABOUT 1 FOOT (0.3 M) HIGHER THAN THE GROUND.
 HV7940
 HV7940                          STATION RECOVERY (2002)
 HV7940
 HV7940'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV7940'REFERENCED GULF OIL COMPANY BUILDING RENAMED PEP UP INC. CHAIN LINK
 HV7940'GATE AND FENCE DO NOT EXIST. REFERENCED GULF GAS SIGN CHANGED TO PEP
 HV7940'UP, AND REFERENCED PARKING EXTENSIVELY ENLARGED, MARK IS NOW 4.2 FT S
 HV7940'OF THE S EDGE. REFERENCED BM EASTON (1934) RECOVERED IN GOOD
 HV7940'CONDITION, SEE HV 7939.
 HV7940
 HV7940                          STATION RECOVERY (2006)
 HV7940
 HV7940'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV7940'MARK IS ABOUT 1 FOOT BELOW GROUND NOT ABOVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5646 ***********************************************************************
 HV5646  DESIGNATION -  EASTON STANDPIPE
 HV5646  PID         -  HV5646
 HV5646  STATE/COUNTY-  MD/TALBOT
 HV5646  COUNTRY     -  US
 HV5646  USGS QUAD   -  EASTON (2016)
 HV5646
 HV5646                         *CURRENT SURVEY CONTROL
 HV5646  ______________________________________________________________________
 HV5646* NAD 83(1991) POSITION- 38 46 29.26089(N) 076 04 23.60463(W)   ADJUSTED
 HV5646  ______________________________________________________________________
 HV5646  GEOID HEIGHT    -        -34.671 (meters)                     GEOID18
 HV5646  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 HV5646  HORZ ORDER      -  THIRD
 HV5646
 HV5646.The horizontal coordinates were established by classical geodetic methods
 HV5646.and adjusted by the National Geodetic Survey in January 1992.
 HV5646
 HV5646.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5646.GEOID18 height accuracy estimate available here.
 HV5646
 HV5646.Click photographs - Photos may exist for this station.
 HV5646
 HV5646.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5646
 HV5646. The following values were computed from the NAD 83(1991) position.
 HV5646
 HV5646;                    North         East     Units Scale Factor Converg.
 HV5646;SPC MD       -   123,415.444   480,531.893   MT  0.99995139   +0 34 54.0
 HV5646;SPC MD       -   404,905.50  1,576,545.05   sFT  0.99995139   +0 34 54.0
 HV5646;UTM  18      - 4,292,332.637   406,772.631   MT  0.99970702   -0 40 19.8
 HV5646
 HV5646_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0677292332(NAD 83)
 HV5646
 HV5646                          SUPERSEDED SURVEY CONTROL
 HV5646
 HV5646  NAD 83(1986)-  38 46 29.25824(N)    076 04 23.62012(W) AD(       ) 3
 HV5646  NAD 27      -  38 46 28.84000(N)    076 04 24.84000(W) AD(       ) 3
 HV5646
 HV5646.Superseded values are not recommended for survey control.
 HV5646
 HV5646.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5646.See file dsdata.pdf to determine how the superseded data were derived.
 HV5646
 HV5646_MARKER: 52 = STANDPIPE TANK
 HV5646_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV5646+SATELLITE: SATELLITE OBSERVATIONS - November 14, 2006
 HV5646
 HV5646  HISTORY     - Date     Condition        Report By
 HV5646  HISTORY     - 1934     FIRST OBSERVED   CGS
 HV5646  HISTORY     - 1938     GOOD             CGS
 HV5646  HISTORY     - 1961     GOOD             CGS
 HV5646  HISTORY     - 20020222 GOOD             USPSQD
 HV5646  HISTORY     - 20041222 GOOD             USPSQD
 HV5646  HISTORY     - 20061114 GOOD             USPSQD
 HV5646
 HV5646                          STATION DESCRIPTION
 HV5646
 HV5646'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV5646'STATION IS LOCATED ON THE W SIDE OF HANSON STREET BETWEEN DOVER
 HV5646'STREET AND MILL PLACE IN THE NE SECTION OF EASTON, MARYLAND.  IT
 HV5646'IS A TALL, BLACK, IRON STANDPIPE.
 HV5646
 HV5646                          STATION RECOVERY (1961)
 HV5646
 HV5646'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5646'STATION FOUND AS DESCRIBED IN THE DESCRIPTION OF L.W.S. IN 1938
 HV5646'WITH THE EXCEPTION THAT THE STANDPIPE IS NOW GREEN IN COLOR.
 HV5646
 HV5646                          STATION RECOVERY (2002)
 HV5646
 HV5646'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV5646'STANDPIPE IS NOW PAINTED LIGHT BLUE.
 HV5646
 HV5646                          STATION RECOVERY (2004)
 HV5646
 HV5646'RECOVERY NOTE BY US POWER SQUADRON 2004 (AEM)
 HV5646'RECOVERED IN GOOD CONDITION.
 HV5646
 HV5646                          STATION RECOVERY (2006)
 HV5646
 HV5646'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV5646'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8844 ***********************************************************************
 HV8844  DESIGNATION -  EASTPORT
 HV8844  PID         -  HV8844
 HV8844  STATE/COUNTY-  MD/TALBOT
 HV8844  COUNTRY     -  US
 HV8844  USGS QUAD   -  EASTON (2016)
 HV8844
 HV8844                         *CURRENT SURVEY CONTROL
 HV8844  ______________________________________________________________________
 HV8844* NAD 83(1991) POSITION- 38 48 24.91223(N) 076 03 57.49929(W)   ADJUSTED
 HV8844* NAD 83(1991) ELLIP HT-   -16.555 (meters)        (01/27/92)   ADJUSTED
 HV8844* NAVD 88 ORTHO HEIGHT -    17.9   (meters)       59.    (feet) VERTCON3
 HV8844  ______________________________________________________________________
 HV8844  GEOID HEIGHT    -        -34.617 (meters)                     GEOID18
 HV8844  NAD 83(1991) X  -  1,198,429.984 (meters)                     COMP
 HV8844  NAD 83(1991) Y  - -4,830,327.124 (meters)                     COMP
 HV8844  NAD 83(1991) Z  -  3,975,626.211 (meters)                     COMP
 HV8844  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 HV8844  HORZ ORDER      -  FIRST
 HV8844  ELLP ORDER      -  FOURTH    CLASS I
 HV8844
 HV8844.This mark is at Easton/newnam Field Airport (ESN)
 HV8844
 HV8844.The horizontal coordinates were established by GPS observations
 HV8844.and adjusted by the National Geodetic Survey in January 1992.
 HV8844
 HV8844.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8844.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8844
 HV8844.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8844.GEOID18 height accuracy estimate available here.
 HV8844
 HV8844.Click photographs - Photos may exist for this station.
 HV8844
 HV8844.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8844
 HV8844.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8844
 HV8844.The ellipsoidal height was determined by GPS observations
 HV8844.and is referenced to NAD 83.
 HV8844
 HV8844. The following values were computed from the NAD 83(1991) position.
 HV8844
 HV8844;                    North         East     Units Scale Factor Converg.
 HV8844;SPC MD       -   126,987.790   481,125.499   MT  0.99995057   +0 35 10.4
 HV8844;SPC MD       -   416,625.77  1,578,492.57   sFT  0.99995057   +0 35 10.4
 HV8844;UTM  18      - 4,295,890.265   407,444.116   MT  0.99970549   -0 40 05.1
 HV8844
 HV8844!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8844!SPC MD       -   1.00000260  x   0.99995057  =   0.99995317
 HV8844!UTM  18      -   1.00000260  x   0.99970549  =   0.99970809
 HV8844
 HV8844:                Primary Azimuth Mark                     Grid Az
 HV8844:SPC MD       -  EASTPORT AZ MK                           211 54 03.9
 HV8844:UTM  18      -  EASTPORT AZ MK                           213 09 19.4
 HV8844
 HV8844_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0744495890(NAD 83)
 HV8844
 HV8844|---------------------------------------------------------------------|
 HV8844| PID    Reference Object                     Distance      Geod. Az  |
 HV8844|                                                           dddmmss.s |
 HV8844| HV8269 EASTPORT AZ MK                      APPROX. 0.6 KM 2122914.3 |
 HV8844|---------------------------------------------------------------------|
 HV8844
 HV8844                          SUPERSEDED SURVEY CONTROL
 HV8844
 HV8844  NAD 83(1986)-  38 48 24.91066(N)    076 03 57.51629(W) AD(       ) 1
 HV8844  NAD 27      -  38 48 24.49550(N)    076 03 58.73390(W) AD(       ) 1
 HV8844  NGVD 29 (11/20/87)   18.2    (m)  RAPOU78  model used  GPS OBS        
 HV8844
 HV8844.Superseded values are not recommended for survey control.
 HV8844
 HV8844.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8844.See file dsdata.pdf to determine how the superseded data were derived.
 HV8844
 HV8844_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8844_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8844_STAMPING: EASTPORT 1985
 HV8844_MARK LOGO: NGS
 HV8844_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8844_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8844+STABILITY: SURFACE MOTION
 HV8844_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8844+SATELLITE: SATELLITE OBSERVATIONS - February 03, 1986
 HV8844
 HV8844  HISTORY     - Date     Condition        Report By
 HV8844  HISTORY     - 1985     MONUMENTED       NGS
 HV8844  HISTORY     - 19860203 GOOD
 HV8844
 HV8844                          STATION DESCRIPTION
 HV8844
 HV8844'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (MRM)
 HV8844'THE STATION IS LOCATED ABOUT 18.2 KM (11.3 MI) WEST-SOUTHWEST OF
 HV8844'MATHEWS, 5.8 KM (3.6 MI) SOUTH OF LONGWOODS, 3.4 KM (2.1 MI) NORTH OF
 HV8844'EASTON AND ON THE EASTON MUNICIPAL AIRPORT.  OWNERSHIP--COUNTY OF
 HV8844'TALBOT AND THE TOWN OF EASTON, AIRPORT MANAGER - WILLIAM S. D.
 HV8844'NEWMAN JR., PHONE 301-822-1282.
 HV8844'
 HV8844'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND MD 331
 HV8844'EAST (DOVER ROAD) AT THE EAST EDGE OF EASTON, GO NORTH FOR 4.5 KM
 HV8844'(2.8 MI) ON U.S. HIGHWAY 50 TO A ROAD LEFT.  TURN LEFT AND GO
 HV8844'SOUTHWEST FOR 0.6 KM (0.4 MI) ON AIRPORT ROAD TO A PAVED DRIVE LEFT.
 HV8844'TURN LEFT AND GO SOUTHEAST FOR 0.2 KM (0.1 MI) ON THE PAVED DRIVE TO
 HV8844'THE AIRPORT ADMINISTRATION BUILDING ON THE LEFT.  PASS THE BUILDING.
 HV8844'TURN RIGHT AND GO SOUTHWEST FOR 0.3 KM (0.2 MI) ON A TAXI RAMP.
 HV8844'.  TURN LEFT AND GO SOUTHEAST FOR 0.2 KM (0.1 MI) ACROSS THE GRASS TO
 HV8844'THE WINDSOCK AND THE STATION.
 HV8844'
 HV8844'THE STATION IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HV8844'STAMPED---EASTPORT 1985---, SET INTO THE TOP OF A ROUND CONCRETE
 HV8844'MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND.  LOCATED
 HV8844'68.58 M (225.0 FT) NORTHWEST FROM THE NORTHWEST EDGE OF RUNWAY 4/22,
 HV8844'10.67 M (35.0 FT) NORTHWEST FROM THE WINDSOCK AND 0.61 M (2.0 FT)
 HV8844'SOUTHEAST FROM A WITNESS POST.  THE UNDERGROUND MARK IS A STANDARD
 HV8844'NATIONAL GEODETIC SURVEY DISK STAMPED---EASTPORT 1985---, SET INTO AN
 HV8844'IRREGULAR MASS OF CONCRETE 1.1 M (3.6 FT) BELOW THE SURFACE.
 HV8844'
 HV8844'AZIMUTH MARK NO. 1 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HV8844'STAMPED---EASTPORT 1985---, SET INTO THE TOP OF A ROUND CONCRETE
 HV8844'MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND.  LOCATED
 HV8844'3.35 M (11.0 FT) SOUTHWEST FROM THE SECOND WHITE LIGHT ALONG THE
 HV8844'WESTERN EDGE OF RUNWAY 15/33 THAT IS NORTH OF RUNWAY 4/22 AND 0.61 M
 HV8844'(2.0 FT) NORTHEAST FROM A WITNESS POST.
 HV8844'
 HV8844'TO REACH THE AZIMUTH FROM THE STATION, GO NORTHWEST FOR 0.2 KM
 HV8844'(0.1 MI) ACROSS THE GRASS TO A TAXI RAMP.  TURN LEFT AND GO SOUTHEAST
 HV8844'FOR 0.2 KM (0.1 MI) ON THE TAXI RAMP TO WHERE THE RAMP TURNS
 HV8844'SOUTHEAST.  TURN LEFT AND GO SOUTHEAST FOR 0.1 KM (0.1 MI) ON THE TAXI
 HV8844'RAMP TO A RAMP RIGHT.  TURN RIGHT AND GO SOUTHWEST FOR 0.4 KM (0.2 MI)
 HV8844'ON THE RAMP TO RUNWAY 15/33 AND THE STATION STRAIGHT AHEAD ON THE
 HV8844'SOUTHWEST SIDE OF THE RUNWAY.  THE UNDERGROUND MARK IS A STANDARD
 HV8844'NATIONAL GEODETIC SURVEY DISK STAMPED---EASTPORT 1985---, SET INTO AN
 HV8844'IRREGULAR MASS OF CONCRETE 1.1 M (3.6 FT) BELOW THE SURFACE.
 HV8844'
 HV8844'NO REFERENCE MARKS WERE SET AT THIS TIME.
 HV8844'
 HV8844'FAA AIRPORT SURVEYS, MARYLAND, JANUARY-FEBRUARY 1986.
 HV8844'
 HV8844'THIS STATION SUITABLE FOR GPS SURVEYS.
 HV8844'
 HV8844'DESCRIBED BY D.F. CALLAHAN.
 HV8844
 HV8844                          STATION RECOVERY (1986)
 HV8844
 HV8844'RECOVERED 1986
 HV8844'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8268 ***********************************************************************
 HV8268  CBN         -  This is a Cooperative Base Network Control Station.
 HV8268  PACS        -  This is a Primary Airport Control Station.
 HV8268  DESIGNATION -  EASTPORT 2
 HV8268  PID         -  HV8268
 HV8268  STATE/COUNTY-  MD/TALBOT
 HV8268  COUNTRY     -  US
 HV8268  USGS QUAD   -  EASTON (2016)
 HV8268
 HV8268                         *CURRENT SURVEY CONTROL
 HV8268  ______________________________________________________________________
 HV8268* NAD 83(2011) POSITION- 38 48 24.40838(N) 076 03 56.60917(W)   ADJUSTED
 HV8268* NAD 83(2011) ELLIP HT-   -16.421 (meters)        (06/27/12)   ADJUSTED
 HV8268* NAD 83(2011) EPOCH   -  2010.00
 HV8268* NAVD 88 ORTHO HEIGHT -    18.204 (meters)       59.72  (feet) ADJUSTED
 HV8268  ______________________________________________________________________
 HV8268  GEOID HEIGHT    -        -34.617 (meters)                     GEOID18
 HV8268  NAD 83(2011) X  -  1,198,453.199 (meters)                     COMP
 HV8268  NAD 83(2011) Y  - -4,830,331.504 (meters)                     COMP
 HV8268  NAD 83(2011) Z  -  3,975,614.187 (meters)                     COMP
 HV8268  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 HV8268  DYNAMIC HEIGHT  -         18.193 (meters)       59.69  (feet) COMP
 HV8268  MODELED GRAVITY -    980,039.7   (mgal)                       NAVD 88
 HV8268
 HV8268  VERT ORDER      -  SECOND    CLASS I
 HV8268
 HV8268  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8268  Standards:
 HV8268         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8268            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8268  -------------------------------------------------------------------
 HV8268  NETWORK    0.32   0.45           0.14   0.12   0.23     -0.07218084
 HV8268  -------------------------------------------------------------------
 HV8268  Click here for local accuracies and other accuracy information.
 HV8268
 HV8268.This mark is at Easton/newnam Field Airport (ESN)
 HV8268
 HV8268.The horizontal coordinates were established by GPS observations
 HV8268.and adjusted by the National Geodetic Survey in June 2012.
 HV8268
 HV8268.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8268.been affixed to the stable North American tectonic plate. See 
 HV8268.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8268
 HV8268.The horizontal coordinates are valid at the epoch date displayed above
 HV8268.which is a decimal equivalence of Year/Month/Day.
 HV8268
 HV8268.The orthometric height was determined by differential leveling and
 HV8268.adjusted by the NATIONAL GEODETIC SURVEY
 HV8268.in August 1994.
 HV8268
 HV8268.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8268.GEOID18 height accuracy estimate available here.
 HV8268
 HV8268.Click photographs - Photos may exist for this station.
 HV8268
 HV8268.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8268
 HV8268.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8268
 HV8268.The ellipsoidal height was determined by GPS observations
 HV8268.and is referenced to NAD 83.
 HV8268
 HV8268.The dynamic height is computed by dividing the NAVD 88
 HV8268.geopotential number by the normal gravity value computed on the
 HV8268.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8268.degrees latitude (g = 980.6199 gals.).
 HV8268
 HV8268.The modeled gravity was interpolated from observed gravity values.
 HV8268
 HV8268. The following values were computed from the NAD 83(2011) position.
 HV8268
 HV8268;                    North         East     Units Scale Factor Converg.
 HV8268;SPC MD       -   126,972.474   481,147.133   MT  0.99995057   +0 35 11.0
 HV8268;SPC MD       -   416,575.53  1,578,563.55   sFT  0.99995057   +0 35 11.0
 HV8268;UTM  18      - 4,295,874.483   407,465.404   MT  0.99970544   -0 40 04.6
 HV8268
 HV8268!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8268!SPC MD       -   1.00000258  x   0.99995057  =   0.99995315
 HV8268!UTM  18      -   1.00000258  x   0.99970544  =   0.99970802
 HV8268
 HV8268:                Primary Azimuth Mark                     Grid Az
 HV8268:SPC MD       -  EASTPORT AZ MK                           214 27 47.8
 HV8268:UTM  18      -  EASTPORT AZ MK                           215 43 03.4
 HV8268
 HV8268_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0746595874(NAD 83)
 HV8268
 HV8268|---------------------------------------------------------------------|
 HV8268| PID    Reference Object                     Distance      Geod. Az  |
 HV8268|                                                           dddmmss.s |
 HV8268| HV8269 EASTPORT AZ MK                      APPROX. 0.6 KM 2150258.8 |
 HV8268|---------------------------------------------------------------------|
 HV8268
 HV8268                          SUPERSEDED SURVEY CONTROL
 HV8268
 HV8268  NAD 83(2007)-  38 48 24.40861(N)    076 03 56.60991(W) AD(2002.00) 0
 HV8268  ELLIP H (02/10/07)  -16.389  (m)                       GP(2002.00)    
 HV8268  ELLIP H (08/09/02)  -16.386  (m)                       GP(       ) 4 2
 HV8268  NAD 83(1991)-  38 48 24.40878(N)    076 03 56.61064(W) AD(       ) B
 HV8268  ELLIP H (06/19/96)  -16.384  (m)                       GP(       ) 4 1
 HV8268  NAD 83(1991)-  38 48 24.40743(N)    076 03 56.60843(W) AD(       ) B
 HV8268  ELLIP H (10/23/91)  -16.417  (m)                       GP(       ) 4 1
 HV8268  NAD 83(1986)-  38 48 24.40595(N)    076 03 56.62625(W) AD(       ) 3
 HV8268  NAD 27      -  38 48 23.99183(N)    076 03 57.84279(W) AD(       ) 3
 HV8268  NAVD 88              18.20   (m)           59.7    (f) LEVELING    3  
 HV8268  NAVD 88              18.17   (m)           59.6    (f) LEVELING    3  
 HV8268  NAVD 88              18.20   (m)           59.7    (f) LEVELING    3  
 HV8268  NGVD 29              18.44   (m)           60.5    (f) LEVELING    3  
 HV8268  NGVD 29 (03/22/89)   18.33   (m)  RAPSU86  model used  GPS OBS        
 HV8268
 HV8268.Superseded values are not recommended for survey control.
 HV8268
 HV8268.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8268.See file dsdata.pdf to determine how the superseded data were derived.
 HV8268
 HV8268_MARKER: F = FLANGE-ENCASED ROD
 HV8268_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HV8268_STAMPING: EASTPORT 2 1988
 HV8268_MARK LOGO: NGS
 HV8268_PROJECTION: FLUSH
 HV8268_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8268_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8268_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8268+SATELLITE: SATELLITE OBSERVATIONS - April 09, 2009
 HV8268_ROD/PIPE-DEPTH: 4.9 meters
 HV8268
 HV8268  HISTORY     - Date     Condition        Report By
 HV8268  HISTORY     - 1988     MONUMENTED       NGS
 HV8268  HISTORY     - 1988     GOOD             NGS
 HV8268  HISTORY     - 19900511 GOOD             NGS
 HV8268  HISTORY     - 19910201 GOOD
 HV8268  HISTORY     - 19941029 GOOD             NOS
 HV8268  HISTORY     - 19951218 GOOD             MDSHA
 HV8268  HISTORY     - 19960319 GOOD             MCCRON
 HV8268  HISTORY     - 19960807 GOOD             NGS
 HV8268  HISTORY     - 19980629 GOOD             NGS
 HV8268  HISTORY     - 19991018 GOOD             NGS
 HV8268  HISTORY     - 20090409 GOOD             MCCRO
 HV8268
 HV8268                          STATION DESCRIPTION
 HV8268
 HV8268'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 (AJL)
 HV8268'THE STATION IS LOCATED ABOUT 3.9 KM (2.4 MI) NORTH OF EASTON, AT THE
 HV8268'EASTON MUNICIPAL AIRPORT, AT THE WIND SOCK ON THE NORTHWEST SIDE OF
 HV8268'RUNWAY 4-22.  OWNERSHIP--TOWN OF EASTON AND TALBOT COUNTY, C/O
 HV8268'AIRPORT SUPERINTENDENT JACK CHAIRES, P O BOX 1832, EASTON MD 31601.
 HV8268'PHONE (301) 822-8560.
 HV8268'
 HV8268'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND STATE
 HV8268'HIGHWAY 331, DOVER ROAD, AT THE EAST SIDE OF EASTON, GO NORTH FOR 4.5
 HV8268'KM (2.8 MI) ON HIGHWAY 50 TO A PAVED CROSS ROAD AT A STOP LIGHT.  TURN
 HV8268'LEFT AND GO WEST FOR 0.4 KM (0.25 MI) ON AIRPORT ROAD TO THE EASTON
 HV8268'AIRPORT TERMINAL BUILDING ON THE LEFT.  CONTINUE STRAIGHT AHEAD AND GO
 HV8268'WEST FOR 0.5 KM (0.3 MI) ON AIRPORT ROAD TO CORKRAN DRIVE ON THE LEFT.
 HV8268'TURN LEFT AND GO SOUTHEAST FOR 0.5 KM (0.3 MI) ON CORKRAN DRIVE TO A
 HV8268'T-JUNCTION WITH A TAXIWAY.  TURN RIGHT AND GO SOUTHWEST FOR 0.2 KM
 HV8268'(0.1 MI) ON THE TAXIWAY ACROSS THE PARKING RAMP TO A CROSS TAXIWAY.
 HV8268'TURN LEFT AND GO SOUTHEAST FOR 0.1 KM (0.05 MI) ON THE TAXIWAY TO THE
 HV8268'JUNCTION OF THE PARALLEL TAXIWAY.  TURN LEFT AND GO NORTHEAST FOR 0.2
 HV8268'KM (0.1 MI) ON THE PARALLEL TAXIWAY TO THE STATION, AT THE SOUTH SIDE
 HV8268'OF THE WIND SOCK ON THE RIGHT.
 HV8268'
 HV8268'THE STATION IS THE TOP CENTER OF A STAINLESS STEEL ROD 8 CM BELOW
 HV8268'GROUND DRIVEN TO REFUSAL AT A DEPTH OF 4.9 METERS IN A GREASE FILLED
 HV8268'SLEEVE EXTENDING TO A DEPTH OF 1.0 METER ENCASED IN A PVC PIPE COVERED
 HV8268'BY A STANDARD METAL NGS LOGO CAP STAMPED ---EASTPORT 2 1988---, FLUSH
 HV8268'WITH THE GROUND.  LOCATED 61.8 METERS (202.6 FT) NORTHWEST FROM THE
 HV8268'CENTER OF THE RUNWAY, 60.1 METERS (197.1 FT) SOUTHEAST FROM THE CENTER
 HV8268'OF THE PARALLEL TAXIWAY, 48.2 METERS (158.0 FT) NORTH FROM THE THIRD
 HV8268'WHITE RUNWAY LIGHT NORTHEAST FROM THE JUNCTION OF THE CROSS OVER
 HV8268'TAXIWAY, 15.8 METERS (52.0 FT) SOUTH-SOUTHEAST FROM THE WIND SOCK
 HV8268'POLE, 1.3 METERS (4.3 FT) NORTHEAST FROM THE NORTHEAST END OF A
 HV8268'RECTANGULAR CONCRETE PAD FORMING A CIRCLE AROUND THE WIND SOCK, AND
 HV8268'1.2 METERS (3.9 FT) SOUTHWEST FROM THE SOUTHWEST END OF A RECTANGULAR
 HV8268'CONCRETE PAD.
 HV8268'
 HV8268'DESCRIBED BY C.L. SMITH, TYPED BY R.L. ZURFLUH.
 HV8268
 HV8268                          STATION RECOVERY (1988)
 HV8268
 HV8268'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HV8268'RECOVERED IN GOOD CONDITION.
 HV8268
 HV8268                          STATION RECOVERY (1990)
 HV8268
 HV8268'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV8268'THE STATION IS LOCATED ABOUT 3.9 KM (2.4 MI) NORTH OF EASTON, AT THE
 HV8268'EASTON MUNICIPAL AIRPORT, AT THE WIND SOCK ON THE NORTHWEST SIDE OF
 HV8268'RUNWAY 4-22.  OWNERSHIP--TOWN OF EASTON AND TALBOT COUNTY, C/O AIRPORT
 HV8268'SUPERINTENDENT JACK CHAIRES, P O BOX 1832, EASTON MD 31601.  PHONE
 HV8268'(301) 822-8560.
 HV8268'
 HV8268'TO REACH THE STATION FROM THE JUNCTION OF U.S.  HIGHWAY 50 AND STATE
 HV8268'HIGHWAY 331, DOVER ROAD, AT THE EAST SIDE OF EASTON, GO NORTH FOR 4.5
 HV8268'KM (2.8 MI) ON HIGHWAY 50 TO A PAVED CROSS ROAD AT A STOP LIGHT.  TURN
 HV8268'LEFT AND GO WEST FOR 0.4 KM (0.25 MI) ON AIRPORT ROAD TO THE EASTON
 HV8268'AIRPORT TERMINAL BUILDING ON THE LEFT.  CONTINUE STRAIGHT AHEAD AND GO
 HV8268'WEST FOR 0.5 KM (0.3 MI) ON AIRPORT ROAD TO CORKRAN DRIVE ON THE LEFT.
 HV8268'TURN LEFT AND GO SOUTHEAST FOR 0.5 KM (0.3 MI) ON CORKRAN DRIVE TO A
 HV8268'T-JUNCTION WITH A TAXIWAY.  TURN RIGHT AND GO SOUTHWEST FOR 0.2 KM
 HV8268'(0.1 MI) ON THE TAXIWAY ACROSS THE PARKING RAMP TO A CROSS TAXIWAY.
 HV8268'TURN LEFT AND GO SOUTHEAST FOR 0.1 KM (0.05 MI) ON THE TAXIWAY TO THE
 HV8268'JUNCTION OF THE PARALLEL TAXIWAY.  TURN LEFT AND GO NORTHEAST FOR 0.2
 HV8268'KM (0.1 MI) ON THE PARALLEL TAXIWAY TO THE STATION, AT THE SOUTH SIDE
 HV8268'OF THE WIND SOCK ON THE RIGHT.
 HV8268'
 HV8268'THE STATION IS THE TOP CENTER OF A STAINLESS STEEL ROD 8 CM BELOW
 HV8268'GROUND DRIVEN TO REFUSAL AT A DEPTH OF 4.9 METERS IN A GREASE FILLED
 HV8268'SLEEVE EXTENDING TO A DEPTH OF 1.0 METER ENCASED IN A PVC PIPE COVERED
 HV8268'BY A STANDARD METAL NGS LOGO CAP STAMPED  ---EASTPORT 2 1988---, FLUSH
 HV8268'WITH THE GROUND.
 HV8268'
 HV8268'LOCATED 61.8 METERS (202.6 FT) NORTHWEST FROM THE CENTER OF THE
 HV8268'RUNWAY, 60.1 METERS (197.1 FT) SOUTHEAST FROM THE CENTER OF THE
 HV8268'PARALLEL TAXIWAY, 48.2 METERS (158.0 FT) NORTH FROM THE THIRD WHITE
 HV8268'RUNWAY LIGHT NORTHEAST FROM THE JUNCTION OF THE CROSS OVER TAXIWAY,
 HV8268'15.8 METERS (52.0 FT) SOUTH-SOUTHEAST FROM THE WIND SOCK POLE, 1.3
 HV8268'METERS (4.3 FT) NORTHEAST FROM THE NORTHEAST END OF A RECTANGULAR
 HV8268'CONCRETE PAD FORMING A CIRCLE AROUND THE WIND SOCK, AND 1.2 METERS
 HV8268'(3.9 FT) SOUTHWEST FROM THE SOUTHWEST END OF A RECTANGULAR CONCRETE
 HV8268'PAD.  DESCRIBED BY C.L. SMITH, TYPED BY R.L. ZURFLUH.
 HV8268
 HV8268                          STATION RECOVERY (1991)
 HV8268
 HV8268'RECOVERED 1991
 HV8268'RECOVERED IN GOOD CONDITION.
 HV8268
 HV8268                          STATION RECOVERY (1994)
 HV8268
 HV8268'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1994 (RJH)
 HV8268'RECOVERED AS DESCRIBED.
 HV8268
 HV8268                          STATION RECOVERY (1995)
 HV8268
 HV8268'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1995 (GHG)
 HV8268'THE STATION IS LOCATED ADJACENT TO A WIND-TEE.  THE WIND-TEE IS
 HV8268'LOCATED JUST SOUTHWEST OF THE WINDSOCK.
 HV8268
 HV8268                          STATION RECOVERY (1996)
 HV8268
 HV8268'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 HV8268'RECOVERED AS DESCRIBED.  NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A
 HV8268'5-INCH LOGO CAP.
 HV8268
 HV8268                          STATION RECOVERY (1996)
 HV8268
 HV8268'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (DMM)
 HV8268'RECOVERED AS DESCRIBED.
 HV8268
 HV8268                          STATION RECOVERY (1998)
 HV8268
 HV8268'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (AJL)
 HV8268'RECOVERED AS DESCRIBED.  THIS STATION HAS BEEN SELECTED AS THE PRIMARY
 HV8268'AIRPORT CONTROL STATION (PACS) .
 HV8268
 HV8268                          STATION RECOVERY (1999)
 HV8268
 HV8268'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (AJL)
 HV8268'RECOVERED AS DESCRIBED.
 HV8268
 HV8268                          STATION RECOVERY (2009)
 HV8268
 HV8268'RECOVERY NOTE BY MCCRONE INCORPORATED 2009 (BWF)
 HV8268'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8269 ***********************************************************************
 HV8269  SACS        -  This is a Secondary Airport Control Station.
 HV8269  DESIGNATION -  EASTPORT AZ MK
 HV8269  PID         -  HV8269
 HV8269  STATE/COUNTY-  MD/TALBOT
 HV8269  COUNTRY     -  US
 HV8269  USGS QUAD   -  EASTON (2016)
 HV8269
 HV8269                         *CURRENT SURVEY CONTROL
 HV8269  ______________________________________________________________________
 HV8269* NAD 83(2011) POSITION- 38 48 08.68057(N) 076 04 10.70870(W)   ADJUSTED
 HV8269* NAD 83(2011) ELLIP HT-   -20.971 (meters)        (06/27/12)   ADJUSTED
 HV8269* NAD 83(2011) EPOCH   -  2010.00
 HV8269* NAVD 88 ORTHO HEIGHT -    13.66  (meters)       44.8   (feet) GPS OBS
 HV8269  ______________________________________________________________________
 HV8269  NAVD 88 orthometric height was determined with geoid model    GEOID96
 HV8269  GEOID HEIGHT    -        -34.612 (meters)                     GEOID96
 HV8269  GEOID HEIGHT    -        -34.620 (meters)                     GEOID18
 HV8269  NAD 83(2011) X  -  1,198,195.326 (meters)                     COMP
 HV8269  NAD 83(2011) Y  - -4,830,704.962 (meters)                     COMP
 HV8269  NAD 83(2011) Z  -  3,975,233.389 (meters)                     COMP
 HV8269  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 HV8269
 HV8269  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8269  Standards:
 HV8269         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8269            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8269  -------------------------------------------------------------------
 HV8269  NETWORK    0.44   0.59           0.20   0.15   0.30     -0.01737302
 HV8269  -------------------------------------------------------------------
 HV8269  Click here for local accuracies and other accuracy information.
 HV8269
 HV8269.This mark is at Easton/newnam Field Airport (ESN)
 HV8269
 HV8269.The horizontal coordinates were established by GPS observations
 HV8269.and adjusted by the National Geodetic Survey in June 2012.
 HV8269
 HV8269.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8269.been affixed to the stable North American tectonic plate. See 
 HV8269.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8269
 HV8269.The horizontal coordinates are valid at the epoch date displayed above
 HV8269.which is a decimal equivalence of Year/Month/Day.
 HV8269
 HV8269.The orthometric height was determined by GPS observations and a
 HV8269.high-resolution geoid model.
 HV8269
 HV8269.GPS derived orthometric heights for airport stations designated as
 HV8269.PACS or SACS are published to 2 decimal places.  This maintains
 HV8269.centimeter relative accuracy between the PACS and SACS.  It does
 HV8269.not indicate centimeter accuracy relative to other marks which are
 HV8269.part of the published vertical control network.
 HV8269
 HV8269.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8269.GEOID18 height accuracy estimate available here.
 HV8269
 HV8269.Click photographs - Photos may exist for this station.
 HV8269
 HV8269.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8269
 HV8269.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8269
 HV8269.The ellipsoidal height was determined by GPS observations
 HV8269.and is referenced to NAD 83.
 HV8269
 HV8269. The following values were computed from the NAD 83(2011) position.
 HV8269
 HV8269;                    North         East     Units Scale Factor Converg.
 HV8269;SPC MD       -   126,484.057   480,811.914   MT  0.99995066   +0 35 02.1
 HV8269;SPC MD       -   414,973.11  1,577,463.75   sFT  0.99995066   +0 35 02.1
 HV8269;UTM  18      - 4,295,393.638   407,119.658   MT  0.99970623   -0 40 13.2
 HV8269
 HV8269!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8269!SPC MD       -   1.00000329  x   0.99995066  =   0.99995395
 HV8269!UTM  18      -   1.00000329  x   0.99970623  =   0.99970952
 HV8269
 HV8269:                Primary Azimuth Mark                     Grid Az
 HV8269:SPC MD       -  EASTPORT                                 031 54 03.9
 HV8269:UTM  18      -  EASTPORT                                 033 09 19.2
 HV8269
 HV8269_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0711995393(NAD 83)
 HV8269
 HV8269|---------------------------------------------------------------------|
 HV8269| PID    Reference Object                     Distance      Geod. Az  |
 HV8269|                                                           dddmmss.s |
 HV8269| HV8844 EASTPORT                            APPROX. 0.6 KM 0322906.0 |
 HV8269| HV8268 EASTPORT 2                          APPROX. 0.6 KM 0350246.7 |
 HV8269|---------------------------------------------------------------------|
 HV8269
 HV8269                          SUPERSEDED SURVEY CONTROL
 HV8269
 HV8269  NAD 83(2007)-  38 48 08.68081(N)    076 04 10.70944(W) AD(2002.00) 0
 HV8269  ELLIP H (02/10/07)  -20.939  (m)                       GP(2002.00)    
 HV8269  ELLIP H (10/29/02)  -20.931  (m)                       GP(       ) 4 2
 HV8269  NAD 83(1991)-  38 48 08.68104(N)    076 04 10.71018(W) AD(       ) 1
 HV8269  ELLIP H (07/08/98)  -20.929  (m)                       GP(       ) 4 2
 HV8269  NAD 83(1991)-  38 48 08.67972(N)    076 04 10.70822(W) AD(       ) 1
 HV8269  ELLIP H (01/27/92)  -20.953  (m)                       GP(       ) 4 1
 HV8269  NAD 83(1986)-  38 48 08.67819(N)    076 04 10.72526(W) AD(       ) 1
 HV8269  NAD 27      -  38 48 08.26412(N)    076 04 11.94232(W) AD(       ) 3
 HV8269  NGVD 29 (11/20/87)   13.78   (m)  UNKNOWN  model used  GPS OBS        
 HV8269
 HV8269.Superseded values are not recommended for survey control.
 HV8269
 HV8269.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8269.See file dsdata.pdf to determine how the superseded data were derived.
 HV8269
 HV8269_MARKER: DZ = AZIMUTH MARK DISK
 HV8269_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8269_STAMPING: EASTPORT 1985
 HV8269_MARK LOGO: NGS
 HV8269_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8269_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8269+STABILITY: SURFACE MOTION
 HV8269_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8269+SATELLITE: SATELLITE OBSERVATIONS - October 18, 1999
 HV8269
 HV8269  HISTORY     - Date     Condition        Report By
 HV8269  HISTORY     - 1985     MONUMENTED       NGS
 HV8269  HISTORY     - 1988     GOOD             NGS
 HV8269  HISTORY     - 19980629 GOOD             NGS
 HV8269  HISTORY     - 19991018 GOOD             NGS
 HV8269
 HV8269                          STATION DESCRIPTION
 HV8269
 HV8269'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (MRM)
 HV8269'THE STATION IS LOCATED ABOUT 18.2 KM (11.3 MI) WEST-SOUTHWEST OF
 HV8269'MATHEWS, 5.8 KM (3.6 MI) SOUTH OF LONGWOODS, 3.4 KM (2.1 MI) NORTH OF
 HV8269'EASTON, AND ON THE EASTON MUNICIPAL AIRPORT.  OWNERSHIP--COUNTY OF
 HV8269'TALBOT AND TOWN OF EASTON, AIRPORT MANAGER - WILLIAM S.D. NEWMAN JR.,
 HV8269'PHONE 301-822-1282.
 HV8269'
 HV8269'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND STATE
 HV8269'HIGHWAY 331 EAST AT THE EAST EDGE OF EASTON, GO NORTH FOR 4.5 KM
 HV8269'(2.8 MI) ON U.S. HIGHWAY 50 TO A ROAD LEFT.  TURN LEFT AND GO
 HV8269'SOUTHWEST FOR 0.6 KM (0.35 MI) ON AIRPORT ROAD TO A PAVED DRIVE LEFT.
 HV8269'TURN LEFT AND GO SOUTHEAST FOR 0.2 KM (0.15 MI) ON THE PAVED DRIVE TO
 HV8269'THE AIRPORT ADMINISTRATION BUILDING ON THE LEFT.  PASS THE BUILDING,
 HV8269'TURN RIGHT AND GO SOUTHWEST FOR 0.5 KM (0.3 MI) ON A TAXI RAMP TO
 HV8269'WHERE THE RAMP TURNS SOUTHEAST.  TURN LEFT AND GO SOUTHEAST FOR 0.1 KM
 HV8269'(0.05 MI) ON A TAXI RAMP TO A TAXI RAMP RIGHT.  TURN RIGHT AND GO
 HV8269'SOUTHWEST FOR 0.4 KM (0.25 MI) ON THE TAXI RAMP TO RUNWAY 15/33 AND
 HV8269'THE STATION STRAIGHT AHEAD ON THE SOUTHWEST SIDE OF THE RUNWAY.
 HV8269'
 HV8269'THE STATION IS A STANDARD NGS DISK STAMPED ---EASTPORT 1985---, SET
 HV8269'INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER FLUSH WITH
 HV8269'GROUND.  LOCATED 3.35 METERS (11.0 FT) SOUTHWEST FROM THE SECOND LIGHT
 HV8269'ALONG THE WESTERN EDGE OF RUNWAY 15/33 THAT IS NORTH OF RUNWAY 4/22
 HV8269'AND 0.61 METERS (2.0 FT) NORTHEAST FROM A WITNESS POST.  THE
 HV8269'UNDERGROUND MARK IS A STANDARD NGS DISK STAMPED ---EASTPORT 1985---,
 HV8269'SET INTO AN IRREGULAR MASS OF CONCRETE 1.1 METERS BELOW THE SURFACE.
 HV8269'
 HV8269'NO REFERENCE MARKS WERE SET AT THIS TIME.
 HV8269'
 HV8269'FAA AIRPORT SURVEYS, MARYLAND, JANUARY-FEBRUARY 1986.
 HV8269'
 HV8269'THIS STATION SUITABLE FOR GPS SURVEYS.
 HV8269'
 HV8269'DESCRIBED BY D.F. CALLAHAN.
 HV8269
 HV8269                          STATION RECOVERY (1988)
 HV8269
 HV8269'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 (AJL)
 HV8269'THE STATION WAS RECOVERED AT THIS DATE.  A COMPLETE NEW DESCRIPTION
 HV8269'FOLLOWS.
 HV8269'
 HV8269'THE STATION IS LOCATED ABOUT 3.9 KM (2.4 MI) NORTH OF EASTON, AT THE
 HV8269'EASTON AIRPORT, IN THE NORTHWEST CORNER OF THE INTERSECTION OF THE TWO
 HV8269'RUNWAYS, ON THE EDGE OF RUNWAY 15-33.  OWNERSHIP--TOWN OF EASTON AND
 HV8269'TALBOT COUNTY, C/O AIRPORT SUPERINTENDENT JACK CHAIRES, P O BOX 1832,
 HV8269'EASTON MD 21601.  PHONE (301) 822-8560.
 HV8269'
 HV8269'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND STATE
 HV8269'HIGHWAY 331, DOVER ROAD, AT THE EAST SIDE OF EASTON, GO NORTH FOR 4.5
 HV8269'KM (2.8 MI) ON HIGHWAY 50 TO A PAVED CROSS ROAD AT A STOP LIGHT.  TURN
 HV8269'LEFT AND GO WEST FOR 0.4 KM (0.25 MI) ON AIRPORT ROAD TO THE EASTON
 HV8269'AIRPORT TERMINAL ON THE LEFT.  CONTINUE STRAIGHT AHEAD AND GO WEST FOR
 HV8269'0.5 KM (0.3 MI) ON AIRPORT ROAD TO CORKRAN DRIVE ON THE LEFT.  TURN
 HV8269'LEFT AND GO SOUTHEAST FOR 0.4 KM (0.25 MI) ON CORKRAN DRIVE TO A PAVED
 HV8269'SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST FOR 0.2 KM
 HV8269'(0.1 MI) ON THE PAVED ROAD ALONG THE NORTHWEST SIDE OF THE HANGARS TO
 HV8269'A FORK, JUST PAST A LEFT TURN IN THE ROAD.  BEAR RIGHT AT THE FORK AND
 HV8269'GO SOUTH FOR 0.3 KM (0.2 MI) ON AN ABANDONED TAXIWAY TO THE PARALLEL
 HV8269'TAXIWAY ALONG RUNWAY 4-22.  TURN RIGHT AND GO SOUTHWEST FOR 0.2 KM
 HV8269'(0.1 MI) ON THE TAXIWAY AND ACROSS RUNWAY 15-33 TO THE STATION ON THE
 HV8269'LEFT.
 HV8269'
 HV8269'THE STATION IS A STANDARD NGS DISK STAMPED ---EASTPORT 1985---, SET
 HV8269'INTO THE TOP OF A ROUND CONCRETE MONUMENT 24 CM IN DIAMETER PROJECTING
 HV8269'4 CM ABOVE GROUND.  LOCATED 110.3 METERS (362.0 FT) NORTHWEST FROM THE
 HV8269'CENTER OF RUNWAY 4-22, 29.5 METERS (96.8 FT) SOUTHWEST FROM THE CENTER
 HV8269'OF RUNWAY 15-33, 13.5 METERS (44.4 FT) SOUTHEAST FROM THE EXTENDED
 HV8269'CENTER OF THE PARALLEL TAXIWAY, 3.5 METERS (11.6 FT) SOUTHWEST FROM
 HV8269'THE SECOND WHITE RUNWAY LIGHT NORTHWEST OF THE JUNCTION OF THE
 HV8269'RUNWAYS, AND 0.6 METERS (0.2 FT) NORTHEAST FROM A FIBERGLASS WITNESS
 HV8269'POST.  THE UNDERGROUND MARK IS A STANDARD NGS DISK STAMPED
 HV8269'---EASTPORT 1985---, SET INTO AN IRREGULAR MASS OF CONCRETE 1.0 METERS
 HV8269'BELOW THE SURFACE.
 HV8269'
 HV8269'DESCRIBED BY C.L. SMITH, TYPED BY R.L. ZURFLUH.
 HV8269
 HV8269                          STATION RECOVERY (1998)
 HV8269
 HV8269'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (AJL)
 HV8269'RECOVERED AS DESCRIBED.  THIS STATION HAS BEEN SELECTED AS A SECONDARY
 HV8269'AIRPORT CONTROL STATION (SACS).
 HV8269
 HV8269                          STATION RECOVERY (1999)
 HV8269
 HV8269'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (AJL)
 HV8269'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5938 ***********************************************************************
 JV5938  DESIGNATION -  ECHO
 JV5938  PID         -  JV5938
 JV5938  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5938  COUNTRY     -  US
 JV5938  USGS QUAD   -  BELTSVILLE (2016)
 JV5938
 JV5938                         *CURRENT SURVEY CONTROL
 JV5938  ______________________________________________________________________
 JV5938* NAD 83(1991) POSITION- 39 03 55.73577(N) 076 54 23.84485(W)   ADJUSTED
 JV5938* NAVD 88 ORTHO HEIGHT -    81.    (meters)      266.    (feet) SCALED
 JV5938  ______________________________________________________________________
 JV5938  GEOID HEIGHT    -        -32.143 (meters)                     GEOID18
 JV5938  LAPLACE CORR    -         -4.08  (seconds)                    DEFLEC18
 JV5938  HORZ ORDER      -  SECOND
 JV5938
 JV5938.The horizontal coordinates were established by classical geodetic methods
 JV5938.and adjusted by the National Geodetic Survey in January 1992.
 JV5938
 JV5938.The orthometric height was scaled from a topographic map.
 JV5938
 JV5938.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5938.GEOID18 height accuracy estimate available here.
 JV5938
 JV5938.Click photographs - Photos may exist for this station.
 JV5938
 JV5938.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5938
 JV5938. The following values were computed from the NAD 83(1991) position.
 JV5938
 JV5938;                    North         East     Units Scale Factor Converg.
 JV5938;SPC MD       -   155,279.578   408,081.041   MT  0.99995531   +0 03 31.0
 JV5938;SPC MD       -   509,446.42  1,338,845.88   sFT  0.99995531   +0 03 31.0
 JV5938;UTM  18      - 4,325,773.237   335,048.075   MT  0.99993504   -1 12 06.6
 JV5938
 JV5938!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5938!SPC MD       -   0.99999237  x   0.99995531  =   0.99994768
 JV5938!UTM  18      -   0.99999237  x   0.99993504  =   0.99992741
 JV5938
 JV5938:                Primary Azimuth Mark                     Grid Az
 JV5938:SPC MD       -  ECHO AZ MK                               331 03 13.8
 JV5938:UTM  18      -  ECHO AZ MK                               332 18 51.4
 JV5938
 JV5938_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3504825773(NAD 83)
 JV5938
 JV5938|---------------------------------------------------------------------|
 JV5938| PID    Reference Object                     Distance      Geod. Az  |
 JV5938|                                                           dddmmss.s |
 JV5938| JV5941 LAUREL PATUXENT FILT PLANT TK       APPROX. 3.7 KM 0081654.3 |
 JV5938| CA9380 ECHO RM 1                            25.920 METERS 10900     |
 JV5938| JV5937 BELTSVILLE DA RSCH CTR N TANK       APPROX. 4.2 KM 1405303.0 |
 JV5938| CA9379 ECHO AZ MK                                         3310644.8 |
 JV5938| CA9381 ECHO RM 2                            29.961 METERS 33419     |
 JV5938|---------------------------------------------------------------------|
 JV5938
 JV5938                          SUPERSEDED SURVEY CONTROL
 JV5938
 JV5938  NAD 83(1986)-  39 03 55.73470(N)    076 54 23.85491(W) AD(       ) 2
 JV5938  NAD 27      -  39 03 55.34230(N)    076 54 24.95043(W) AD(       ) 2
 JV5938
 JV5938.Superseded values are not recommended for survey control.
 JV5938
 JV5938.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5938.See file dsdata.pdf to determine how the superseded data were derived.
 JV5938
 JV5938_MARKER: DS = TRIANGULATION STATION DISK
 JV5938_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5938_STAMPING: ECHO 1957
 JV5938_MARK LOGO: CGS
 JV5938_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5938+STABILITY: SURFACE MOTION
 JV5938
 JV5938  HISTORY     - Date     Condition        Report By
 JV5938  HISTORY     - 1957     MONUMENTED       CGS
 JV5938
 JV5938                          STATION DESCRIPTION
 JV5938
 JV5938'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5938'STATION IS LOCATED ABOUT 4.0 MILES SOUTH-SOUTHWEST OF LAUREL AND
 JV5938'ABOUT 2.0 MILES NORTH OF BELTSVILLE.  STATION IS 42-1/2 FEET
 JV5938'SOUTH-SOUTHWEST OF APPROXIMATE CENTERLINE OF TRACK ROAD AND 5 FEET
 JV5938'SOUTH-SOUTHEAST OF WITNESS POST.  THE MARK PROJECTS 4 INCHES AND THE
 JV5938'DISK IS STAMPED ECHO 1957.
 JV5938'
 JV5938'REFERENCE MARK NO. 1 IS 44 FEET WEST-NORTHWEST OF UTILITY POLE AND 8
 JV5938'FEET SOUTH-SOUTHWEST OF APPROXIMATE CENTERLINE OF TRACK ROAD.  THE
 JV5938'MARK PROJECTS 4 INCHES AND THE DISK IS STAMPED ECHO NO 1 1957.
 JV5938'
 JV5938'REFERENCE MARK NO. 2 IS 25 FEET SOUTHEAST OF UTILITY POLE AND 9 FEET
 JV5938'NORTHWEST OF APPROXIMATE CENTERLINE OF TRACK ROAD.  THE MARK
 JV5938'PROJECTS 2 INCHES AND THE DISK IS STAMPED ECHO NO 2 1957.
 JV5938'
 JV5938'AZIMUTH MARK IS 30 FEET SOUTH-SOUTHEAST OF MAPLE TREE, 7 FEET
 JV5938'EAST-SOUTHEAST OF FENCELINE AND 5-1/4 FEET SOUTHEAST OF WITNESS
 JV5938'POST.  THE MARK PROJECTS 4 INCHES AND THE DISK IS STAMPED ECHO
 JV5938'1957.
 JV5938'
 JV5938'TO REACH FROM INTERSECTION OF U.S. HIGHWAY NO. 1 AND STATE HIGHWAY
 JV5938'NO. 198 IN LAUREL, GO SOUTHERLY ON U.S. HIGHWAY NO. 1 FOR 3-1/2
 JV5938'MILES TO RAILROAD OVERPASS.  CONTINUE SOUTHERLY ON U.S. HIGHWAY
 JV5938'NO. 1 FOR 1.0 MILE TO SIDE ROAD RIGHT.  TURN RIGHT AND GO
 JV5938'NORTHWESTERLY ON AMMONDALE ROAD FOR 0.65 MILE TO FORK.  TAKE
 JV5938'RIGHT FORK AND GO 100 YARDS, KEEP RIGHT AND GO NORTHERLY FOR
 JV5938'0.05 MILE TO FORKS.  TAKE LEFT FORK AND GO NORTHWESTERLY FOR 0.5
 JV5938'MILE TO HOUSE ON LEFT.  TURN LEFT, PASS TO RIGHT OF HOUSE AND
 JV5938'GO 0.05 MILE TO GATE.  PASS THROUGH GATE, TURN RIGHT AND GO
 JV5938'NORTHERLY FOR 0.05 MILE TO EDGE OF CLEARING.  TURN LEFT AND GO
 JV5938'WESTERLY ALONG EDGE OF FIELD FOR 0.1 MILE TO STATION ON LEFT
 JV5938'(SOUTH) SIDE OF TRACK ROAD.  CONTINUE WESTERLY FOR 0.1 MILE
 JV5938'TO T ROAD.  TURN RIGHT AND GO NORTHERLY FOR 0.05 MILE TO LARGE
 JV5938'MAPLE TREE AND AZIMUTH MARK AS DESCRIBED.
 JV5938'
 JV5938'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8849 ***********************************************************************
 HV8849  CBN         -  This is a Cooperative Base Network Control Station.
 HV8849  DESIGNATION -  EDEN
 HV8849  PID         -  HV8849
 HV8849  STATE/COUNTY-  MD/DORCHESTER
 HV8849  COUNTRY     -  US
 HV8849  USGS QUAD   -  CHURCH CREEK (2016)
 HV8849
 HV8849                         *CURRENT SURVEY CONTROL
 HV8849  ______________________________________________________________________
 HV8849* NAD 83(2011) POSITION- 38 35 05.82052(N) 076 10 11.11394(W)   ADJUSTED
 HV8849* NAD 83(2011) ELLIP HT-   -33.689 (meters)        (06/27/12)   ADJUSTED
 HV8849* NAD 83(2011) EPOCH   -  2010.00
 HV8849* NAVD 88 ORTHO HEIGHT -     1.1   (meters)        4.    (feet) GPS OBS
 HV8849  ______________________________________________________________________
 HV8849  NAVD 88 orthometric height was determined with geoid model    GEOID03
 HV8849  GEOID HEIGHT    -        -34.795 (meters)                     GEOID03
 HV8849  GEOID HEIGHT    -        -34.824 (meters)                     GEOID18
 HV8849  NAD 83(2011) X  -  1,193,358.003 (meters)                     COMP
 HV8849  NAD 83(2011) Y  - -4,847,435.404 (meters)                     COMP
 HV8849  NAD 83(2011) Z  -  3,956,384.056 (meters)                     COMP
 HV8849  LAPLACE CORR    -         -4.27  (seconds)                    DEFLEC18
 HV8849
 HV8849  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8849  Standards:
 HV8849         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8849            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8849  -------------------------------------------------------------------
 HV8849  NETWORK    0.74   1.37           0.32   0.28   0.70     -0.04326368
 HV8849  -------------------------------------------------------------------
 HV8849  Click here for local accuracies and other accuracy information.
 HV8849
 HV8849.The horizontal coordinates were established by GPS observations
 HV8849.and adjusted by the National Geodetic Survey in June 2012.
 HV8849
 HV8849.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8849.been affixed to the stable North American tectonic plate. See 
 HV8849.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8849
 HV8849.The horizontal coordinates are valid at the epoch date displayed above
 HV8849.which is a decimal equivalence of Year/Month/Day.
 HV8849
 HV8849.The orthometric height was determined by GPS observations and a
 HV8849.high-resolution geoid model.
 HV8849
 HV8849.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8849.GEOID18 height accuracy estimate available here.
 HV8849
 HV8849.Click photographs - Photos may exist for this station.
 HV8849
 HV8849.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8849
 HV8849.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8849
 HV8849.The ellipsoidal height was determined by GPS observations
 HV8849.and is referenced to NAD 83.
 HV8849
 HV8849. The following values were computed from the NAD 83(2011) position.
 HV8849
 HV8849;                    North         East     Units Scale Factor Converg.
 HV8849;SPC MD       -   102,261.993   472,335.824   MT  0.99996266   +0 31 15.9
 HV8849;SPC MD       -   335,504.56  1,549,655.12   sFT  0.99996266   +0 31 15.9
 HV8849;UTM  18      - 4,271,368.375   398,118.274   MT  0.99972782   -0 43 46.6
 HV8849
 HV8849!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8849!SPC MD       -   1.00000529  x   0.99996266  =   0.99996795
 HV8849!UTM  18      -   1.00000529  x   0.99972782  =   0.99973310
 HV8849
 HV8849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9811871368(NAD 83)
 HV8849
 HV8849                          SUPERSEDED SURVEY CONTROL
 HV8849
 HV8849  NAD 83(2007)-  38 35 05.82089(N)    076 10 11.11488(W) AD(2002.00) 0
 HV8849  ELLIP H (02/10/07)  -33.667  (m)                       GP(2002.00)    
 HV8849  NAD 83(1991)-  38 35 05.82051(N)    076 10 11.11493(W) AD(       ) A
 HV8849  ELLIP H (02/12/02)  -33.665  (m)                       GP(       ) 4 1
 HV8849  NAD 83(1991)-  38 35 05.81963(N)    076 10 11.11407(W) AD(       ) 1
 HV8849  ELLIP H (01/27/92)  -33.734  (m)                       GP(       ) 4 1
 HV8849  NAD 83(1986)-  38 35 05.81712(N)    076 10 11.13022(W) AD(       ) 1
 HV8849  NAD 27      -  38 35 05.38777(N)    076 10 12.33763(W) AD(       ) 1
 HV8849  NAVD 88 (02/12/02)    1.1    (m)  GEOID99  model used  GPS OBS        
 HV8849  NGVD 29 (11/20/87)    1.3    (m)  RAPOU78  model used  GPS OBS        
 HV8849
 HV8849.Superseded values are not recommended for survey control.
 HV8849
 HV8849.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8849.See file dsdata.pdf to determine how the superseded data were derived.
 HV8849
 HV8849_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8849_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8849_STAMPING: EDEN 1985
 HV8849_MARK LOGO: NGS
 HV8849_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8849_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8849+STABILITY: SURFACE MOTION
 HV8849_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8849+SATELLITE: SATELLITE OBSERVATIONS - May 20, 2006
 HV8849
 HV8849  HISTORY     - Date     Condition        Report By
 HV8849  HISTORY     - 1985     MONUMENTED       NGS
 HV8849  HISTORY     - 19860129 GOOD
 HV8849  HISTORY     - 20000327 GOOD             MDSHA
 HV8849  HISTORY     - 20020624 GOOD             MDSHA
 HV8849  HISTORY     - 20060520 GOOD             USPSQD
 HV8849
 HV8849                          STATION DESCRIPTION
 HV8849
 HV8849'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 HV8849'THE STATION IS LOCATED ABOUT 8-1/2 KM (5-1/4 MI) WEST FROM CAMBRIDGE
 HV8849'AND 1-1/4 KM (3/4 MI) EAST FROM LLOYDS.
 HV8849'
 HV8849'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8849'
 HV8849'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 341 AND 343 AT
 HV8849'CAMBRIDGE, GO WEST ON STATE HIGHWAY 343 FOR 7.5 KM (4.65 MI) TO THE
 HV8849'AZIMUTH MARK ON THE LEFT.  CONTINUE WEST ON STATE HIGHWAY 343 FOR
 HV8849'1.15 KM (0.7 MI) TO THE STATION ON THE RIGHT NEAR A SIDE ROAD RIGHT.
 HV8849'
 HV8849'THE STATION SURFACE MARK IS A STANDARD NGS DISK STAMPED--EDEN 1985--
 HV8849'SET IN THE TOP OF A 30 CM (12 INCH) ROUND CONCRETE MONUMENT WHICH IS
 HV8849'8 CM (4 INCHES) BELOW THE GROUND SURFACE.  THE SUB-SURFACE DISK IS
 HV8849'ALSO A STANDARD NGS STATION MARK STAMPED--EDEN 1985--SET IN THE TOP
 HV8849'OF A 15 CM (6 INCH) MASS OF CONCRETE WHICH IS 1.03 METERS (3.3 FT)
 HV8849'BELOW THE GROUND SURFACE.
 HV8849'
 HV8849'THE STATION IS 15.7 METERS (51.5 FT) WEST-NORTHWEST FROM A POWERLINE
 HV8849'POLE NUMBERED 30609 01292, 13.4 METERS (44.0 FT) SOUTHEAST FROM THE
 HV8849'CENTER OF THE GARDEN OF EDEN ROAD, 17.0 METERS (55.8 FT) NORTHEAST
 HV8849'FROM THE CENTER OF STATE HIGHWAY 343, 22.2 METERS (72.8 FT) SOUTH
 HV8849'SOUTHWEST FROM THE CENTER OF A FIELD ROAD AND 15.6 METERS (51.2 FT)
 HV8849'WEST-NORTHWEST FROM A CARSONITE WITNESS POST.
 HV8849
 HV8849                          STATION RECOVERY (1986)
 HV8849
 HV8849'RECOVERED 1986
 HV8849'RECOVERED IN GOOD CONDITION.
 HV8849
 HV8849                          STATION RECOVERY (2000)
 HV8849
 HV8849'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV8849'RECOVERED AS DESCRIBED.
 HV8849
 HV8849                          STATION RECOVERY (2002)
 HV8849
 HV8849'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 HV8849'RECOVERED AS DESCRIBED.
 HV8849
 HV8849                          STATION RECOVERY (2006)
 HV8849
 HV8849'RECOVERY NOTE BY US POWER SQUADRON 2006 (NHN)
 HV8849'MARK IS ON THE EAST CORNER OF TRAVERS WHARF ROAD AND 343. (TRAVERS
 HV8849'WHARF ROAD LATER SPLITS INTO GARDEN OF EDEN AND TRAVERS WHARF ROAD)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6745 ***********************************************************************
 JV6745  DESIGNATION -  EDEN
 JV6745  PID         -  JV6745
 JV6745  STATE/COUNTY-  MD/HARFORD
 JV6745  COUNTRY     -  US
 JV6745  USGS QUAD   -  FAWN GROVE (2019)
 JV6745
 JV6745                         *CURRENT SURVEY CONTROL
 JV6745  ______________________________________________________________________
 JV6745* NAD 83(2011) POSITION- 39 40 11.48427(N) 076 27 51.18212(W)   ADJUSTED
 JV6745* NAD 83(2011) ELLIP HT-   115.605 (meters)        (06/27/12)   ADJUSTED
 JV6745* NAD 83(2011) EPOCH   -  2010.00
 JV6745* NAVD 88 ORTHO HEIGHT -   148.1   (meters)      486.    (feet) VERTCON3
 JV6745  ______________________________________________________________________
 JV6745  GEOID HEIGHT    -        -32.566 (meters)                     GEOID18
 JV6745  NAD 83(2011) X  -  1,150,667.540 (meters)                     COMP
 JV6745  NAD 83(2011) Y  - -4,779,722.927 (meters)                     COMP
 JV6745  NAD 83(2011) Z  -  4,049,911.296 (meters)                     COMP
 JV6745  LAPLACE CORR    -         -3.52  (seconds)                    DEFLEC18
 JV6745
 JV6745  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6745  Standards:
 JV6745         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6745            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6745  -------------------------------------------------------------------
 JV6745  NETWORK    1.76   4.72           0.75   0.63   2.41      0.47498509
 JV6745  -------------------------------------------------------------------
 JV6745  Click here for local accuracies and other accuracy information.
 JV6745
 JV6745.The horizontal coordinates were established by GPS observations
 JV6745.and adjusted by the National Geodetic Survey in June 2012.
 JV6745
 JV6745.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6745.been affixed to the stable North American tectonic plate. See 
 JV6745.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6745
 JV6745.The horizontal coordinates are valid at the epoch date displayed above
 JV6745.which is a decimal equivalence of Year/Month/Day.
 JV6745
 JV6745.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6745.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6745
 JV6745.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6745.GEOID18 height accuracy estimate available here.
 JV6745
 JV6745.Click photographs - Photos may exist for this station.
 JV6745
 JV6745.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6745
 JV6745.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6745
 JV6745.The ellipsoidal height was determined by GPS observations
 JV6745.and is referenced to NAD 83.
 JV6745
 JV6745. The following values were computed from the NAD 83(2011) position.
 JV6745
 JV6745;                    North         East     Units Scale Factor Converg.
 JV6745;SPC MD       -   222,508.957   445,973.976   MT  1.00004586   +0 20 10.6
 JV6745;SPC MD       -   730,014.80  1,463,166.29   sFT  1.00004586   +0 20 10.6
 JV6745;UTM  18      - 4,392,140.109   374,412.464   MT  0.99979418   -0 56 05.4
 JV6745
 JV6745!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6745!SPC MD       -   0.99998186  x   1.00004586  =   1.00002772
 JV6745!UTM  18      -   0.99998186  x   0.99979418  =   0.99977605
 JV6745
 JV6745_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7441292140(NAD 83)
 JV6745
 JV6745                          SUPERSEDED SURVEY CONTROL
 JV6745
 JV6745  NAD 83(2007)-  39 40 11.48452(N)    076 27 51.18273(W) AD(2002.00) 0
 JV6745  ELLIP H (02/10/07)  115.625  (m)                       GP(2002.00)    
 JV6745  ELLIP H (09/18/02)  115.633  (m)                       GP(       ) 4 2
 JV6745  NAD 83(1991)-  39 40 11.48452(N)    076 27 51.18163(W) AD(       ) 1
 JV6745  ELLIP H (01/27/92)  115.626  (m)                       GP(       ) 4 1
 JV6745  NAD 83(1986)-  39 40 11.47745(N)    076 27 51.18731(W) AD(       ) 1
 JV6745  NGVD 29 (06/18/91)  148.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6745
 JV6745.Superseded values are not recommended for survey control.
 JV6745
 JV6745.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6745.See file dsdata.pdf to determine how the superseded data were derived.
 JV6745
 JV6745_MARKER: DD = SURVEY DISK
 JV6745_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6745_STAMPING: 100 EDEN 1989
 JV6745_MARK LOGO: MD-025
 JV6745_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6745_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6745+STABILITY: SURFACE MOTION
 JV6745_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6745+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6745
 JV6745  HISTORY     - Date     Condition        Report By
 JV6745  HISTORY     - 1989     MONUMENTED       RDA
 JV6745
 JV6745                          STATION DESCRIPTION
 JV6745
 JV6745'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6745'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6745'1 MILE SOUTHEAST OF THE HIDDEN VALLEY GIRLS CAMP.
 JV6745'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 24 AND
 JV6745'STATE HIGHWAY 165 PROCEED SOUTHWEST ALONG HIGHWAY 165 2.15 MILES TO
 JV6745'ITS INTERSECTION WITH FAWN GROVE ROAD.  TURN RIGHT AND PROCEED NORTH
 JV6745'ALONG FAWN GROVE ROAD 0.5 MILE TO ITS INTERSECTION WITH JERRYS ROAD.
 JV6745'TURN LEFT AND PROCEED WEST ALONG JERRYS ROAD 0.8 MILE TO THE STATION
 JV6745'THE STATION ON THE RIGHT.
 JV6745'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6745'ABOUT 1 INCH BELOW GROUND STAMPED 100 EDEN 1989.  THE STATION IS 16.0
 JV6745'FEET NORTH OF THE CENTERLINE OF JERRYS ROAD, 21.0 FEET EAST OF A 4
 JV6745'INCH POPULAR TREE, AND 50.0 FEET NORTHEAST OF B AND G POWER POLE
 JV6745'NUMBER 107129.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8850 ***********************************************************************
 HV8850  DESIGNATION -  EDEN AZ MK
 HV8850  PID         -  HV8850
 HV8850  STATE/COUNTY-  MD/DORCHESTER
 HV8850  COUNTRY     -  US
 HV8850  USGS QUAD   -  CHURCH CREEK (2016)
 HV8850
 HV8850                         *CURRENT SURVEY CONTROL
 HV8850  ______________________________________________________________________
 HV8850* NAD 83(1991) POSITION- 38 34 43.16632(N) 076 09 32.82641(W)   NO CHECK
 HV8850* NAVD 88 ORTHO HEIGHT -     3.2   (meters)       10.    (feet) VERTCON3
 HV8850  ______________________________________________________________________
 HV8850  GEOID HEIGHT    -        -34.859 (meters)                     GEOID18
 HV8850  LAPLACE CORR    -         -4.11  (seconds)                    DEFLEC18
 HV8850  HORZ ORDER      -  SECOND
 HV8850
 HV8850.The horizontal coordinates were established by classical geodetic methods
 HV8850.and adjusted by the National Geodetic Survey in January 1992.
 HV8850
 HV8850.No horizontal observational check was made to the station.
 HV8850
 HV8850.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8850.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8850
 HV8850.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8850.GEOID18 height accuracy estimate available here.
 HV8850
 HV8850.Click photographs - Photos may exist for this station.
 HV8850
 HV8850.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8850
 HV8850. The following values were computed from the NAD 83(1991) position.
 HV8850
 HV8850;                    North         East     Units Scale Factor Converg.
 HV8850;SPC MD       -   101,571.978   473,268.852   MT  0.99996322   +0 31 40.0
 HV8850;SPC MD       -   333,240.73  1,552,716.23   sFT  0.99996322   +0 31 40.0
 HV8850;UTM  18      - 4,270,658.327   399,035.802   MT  0.99972553   -0 43 22.3
 HV8850
 HV8850!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8850!SPC MD       -   1.00000497  x   0.99996322  =   0.99996819
 HV8850!UTM  18      -   1.00000497  x   0.99972553  =   0.99973050
 HV8850
 HV8850_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9903570658(NAD 83)
 HV8850
 HV8850                          SUPERSEDED SURVEY CONTROL
 HV8850
 HV8850  NAD 83(1986)-  38 34 43.16268(N)    076 09 32.84363(W) AD(       ) 2
 HV8850  NAD 27      -  38 34 42.73350(N)    076 09 34.05179(W) AD(       ) 2
 HV8850  NGVD 29 (11/20/87)    3.4    (m)           11.     (f) VERT ANG       
 HV8850
 HV8850.Superseded values are not recommended for survey control.
 HV8850
 HV8850.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8850.See file dsdata.pdf to determine how the superseded data were derived.
 HV8850
 HV8850_MARKER: DZ = AZIMUTH MARK DISK
 HV8850_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8850_STAMPING: EDEN 1985
 HV8850_MARK LOGO: NGS
 HV8850_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8850_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8850+STABILITY: SURFACE MOTION
 HV8850
 HV8850  HISTORY     - Date     Condition        Report By
 HV8850  HISTORY     - 1985     MONUMENTED       NGS
 HV8850
 HV8850                          STATION DESCRIPTION
 HV8850
 HV8850'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 HV8850'THE STATION IS LOCATED ABOUT 7-1/4 KM (4-1/2 MI) WEST FROM CAMBRIDGE
 HV8850'AND 2-1/2 KM (1-1/2 MI) EAST FROM LLOYDS.
 HV8850'
 HV8850'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8850'
 HV8850'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 341 AND 343 AT
 HV8850'CAMBRIDGE, GO WEST ON STATE HIGHWAY 343 FOR 7.5 KM (4.65 MI) TO THE
 HV8850'STATION ON THE LEFT.
 HV8850'
 HV8850'THE STATION SURFACE MARK IS A STANDARD NGS AZIMUTH MARK DISK
 HV8850'STAMPED--EDEN 1985--SET IN THE TOP OF A 30 CM (12 INCH) ROUND POST
 HV8850'FLUSH WITH THE SURFACE OF THE GROUND.  THE SUB-SURFACE DISK IS
 HV8850'SIMILAR TO THE SURFACE DISK AND SET 1.0 METERS (3.4 FT) BELOW THE
 HV8850'SURFACE.
 HV8850'
 HV8850'THE STATION IS 15.8 M (51.8 FT) SOUTH-SOUTHWEST FROM THE CENTER OF
 HV8850'THE HIGHWAY, 18.0 METERS (59.1 FT) NORTH-NORTHEAST FROM A
 HV8850'TELEPHONE POLE NUMBERED 169, 77.0 METERS (252.6 FT) NORTHEAST FROM
 HV8850'A LONE 36 CM (1 FT) PINE TREE AND 15.6 METERS (51.1 FT) NORTHEAST
 HV8850'FROM A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6746 ***********************************************************************
 JV6746  DESIGNATION -  EDEN AZ MK
 JV6746  PID         -  JV6746
 JV6746  STATE/COUNTY-  MD/HARFORD
 JV6746  COUNTRY     -  US
 JV6746  USGS QUAD   -  FAWN GROVE (2019)
 JV6746
 JV6746                         *CURRENT SURVEY CONTROL
 JV6746  ______________________________________________________________________
 JV6746* NAD 83(2011) POSITION- 39 40 14.47197(N) 076 27 04.91146(W)   ADJUSTED
 JV6746* NAD 83(2011) ELLIP HT-    99.040 (meters)        (06/27/12)   ADJUSTED
 JV6746* NAD 83(2011) EPOCH   -  2010.00
 JV6746* NAVD 88 ORTHO HEIGHT -   131.6   (meters)      432.    (feet) VERTCON3
 JV6746  ______________________________________________________________________
 JV6746  GEOID HEIGHT    -        -32.588 (meters)                     GEOID18
 JV6746  NAD 83(2011) X  -  1,151,722.962 (meters)                     COMP
 JV6746  NAD 83(2011) Y  - -4,779,395.100 (meters)                     COMP
 JV6746  NAD 83(2011) Z  -  4,049,971.649 (meters)                     COMP
 JV6746  LAPLACE CORR    -         -3.26  (seconds)                    DEFLEC18
 JV6746
 JV6746  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6746  Standards:
 JV6746         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6746            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6746  -------------------------------------------------------------------
 JV6746  NETWORK    3.04   5.86           1.35   0.91   2.99      0.68798519
 JV6746  -------------------------------------------------------------------
 JV6746  Click here for local accuracies and other accuracy information.
 JV6746
 JV6746.The horizontal coordinates were established by GPS observations
 JV6746.and adjusted by the National Geodetic Survey in June 2012.
 JV6746
 JV6746.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6746.been affixed to the stable North American tectonic plate. See 
 JV6746.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6746
 JV6746.The horizontal coordinates are valid at the epoch date displayed above
 JV6746.which is a decimal equivalence of Year/Month/Day.
 JV6746
 JV6746.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6746.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6746
 JV6746.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6746.GEOID18 height accuracy estimate available here.
 JV6746
 JV6746.Click photographs - Photos may exist for this station.
 JV6746
 JV6746.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6746
 JV6746.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6746
 JV6746.The ellipsoidal height was determined by GPS observations
 JV6746.and is referenced to NAD 83.
 JV6746
 JV6746. The following values were computed from the NAD 83(2011) position.
 JV6746
 JV6746;                    North         East     Units Scale Factor Converg.
 JV6746;SPC MD       -   222,607.654   447,076.285   MT  1.00004606   +0 20 39.6
 JV6746;SPC MD       -   730,338.61  1,466,782.78   sFT  1.00004606   +0 20 39.6
 JV6746;UTM  18      - 4,392,214.312   375,516.411   MT  0.99979078   -0 55 35.9
 JV6746
 JV6746!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6746!SPC MD       -   0.99998446  x   1.00004606  =   1.00003052
 JV6746!UTM  18      -   0.99998446  x   0.99979078  =   0.99977525
 JV6746
 JV6746_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7551692214(NAD 83)
 JV6746
 JV6746                          SUPERSEDED SURVEY CONTROL
 JV6746
 JV6746  NAD 83(2007)-  39 40 14.47222(N)    076 27 04.91208(W) AD(2002.00) 0
 JV6746  ELLIP H (02/10/07)   99.061  (m)                       GP(2002.00)    
 JV6746  ELLIP H (09/18/02)   99.068  (m)                       GP(       ) 4 2
 JV6746  NAD 83(1991)-  39 40 14.47243(N)    076 27 04.91079(W) AD(       ) 1
 JV6746  ELLIP H (01/27/92)   99.061  (m)                       GP(       ) 4 1
 JV6746  NAD 83(1986)-  39 40 14.46535(N)    076 27 04.91644(W) AD(       ) 1
 JV6746  NGVD 29 (06/18/91)  131.8    (m)  UNKNOWN  model used  GPS OBS        
 JV6746
 JV6746.Superseded values are not recommended for survey control.
 JV6746
 JV6746.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6746.See file dsdata.pdf to determine how the superseded data were derived.
 JV6746
 JV6746_MARKER: DZ = AZIMUTH MARK DISK
 JV6746_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6746_STAMPING: 100 EDEN 1989
 JV6746_MARK LOGO: MD-025
 JV6746_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6746_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6746+STABILITY: SURFACE MOTION
 JV6746_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6746+SATELLITE: SATELLITE OBSERVATIONS - January 04, 1990
 JV6746
 JV6746  HISTORY     - Date     Condition        Report By
 JV6746  HISTORY     - 1989     MONUMENTED       RDA
 JV6746  HISTORY     - 19900104 GOOD
 JV6746
 JV6746                          STATION DESCRIPTION
 JV6746
 JV6746'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6746'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED EAST ALONG JERRYS
 JV6746'ROAD 0.75 MILES TO THE MARK ON THE RIGHT.
 JV6746'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6746'ABOUT 1 INCH BELOW GROUND STAMPED 100 EDEN 1989.  THE MARK IS 16.0
 JV6746'FEET SOUTHEAST OF THE CENTERLINE OF JERRYS ROAD, 37.0 FEET SOUTHEAST
 JV6746'OF POWER POLE NUMBER 126, AND 81.0 FEET SOUTHWEST OF A 20 INCH LOCUST
 JV6746'TREE AND 3630.85 FEET FROM THE STATION.
 JV6746
 JV6746                          STATION RECOVERY (1990)
 JV6746
 JV6746'RECOVERED 1990
 JV6746'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6221 ***********************************************************************
 DN6221  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6221  DESIGNATION -  EDER
 DN6221  PID         -  DN6221
 DN6221  STATE/COUNTY-  MD/CECIL
 DN6221  COUNTRY     -  US
 DN6221  USGS QUAD   -  ELKTON (2016)
 DN6221
 DN6221                         *CURRENT SURVEY CONTROL
 DN6221  ______________________________________________________________________
 DN6221* NAD 83(2011) POSITION- 39 36 23.76671(N) 075 49 40.65189(W)   ADJUSTED
 DN6221* NAD 83(2011) ELLIP HT-   -31.644 (meters)        (06/27/12)   ADJUSTED
 DN6221* NAD 83(2011) EPOCH   -  2010.00
 DN6221* NAVD 88 ORTHO HEIGHT -     1.49  (meters)        4.9   (feet) GPS OBS
 DN6221  ______________________________________________________________________
 DN6221  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6221  GEOID HEIGHT    -        -33.119 (meters)                     GEOID03
 DN6221  GEOID HEIGHT    -        -33.145 (meters)                     GEOID18
 DN6221  NAD 83(2011) X  -  1,204,742.555 (meters)                     COMP
 DN6221  NAD 83(2011) Y  - -4,770,884.539 (meters)                     COMP
 DN6221  NAD 83(2011) Z  -  4,044,408.966 (meters)                     COMP
 DN6221  LAPLACE CORR    -          1.48  (seconds)                    DEFLEC18
 DN6221
 DN6221  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6221  Standards:
 DN6221         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6221            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6221  -------------------------------------------------------------------
 DN6221  NETWORK    0.56   1.14           0.26   0.18   0.58      0.03000176
 DN6221  -------------------------------------------------------------------
 DN6221  Click here for local accuracies and other accuracy information.
 DN6221
 DN6221.The horizontal coordinates were established by GPS observations
 DN6221.and adjusted by the National Geodetic Survey in June 2012.
 DN6221
 DN6221.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6221.been affixed to the stable North American tectonic plate. See 
 DN6221.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6221
 DN6221.The horizontal coordinates are valid at the epoch date displayed above
 DN6221.which is a decimal equivalence of Year/Month/Day.
 DN6221
 DN6221.The orthometric height was determined by GPS observations and a
 DN6221.high-resolution geoid model using precise GPS observation and
 DN6221.processing techniques.
 DN6221
 DN6221.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6221.GEOID18 height accuracy estimate available here.
 DN6221
 DN6221.Click photographs - Photos may exist for this station.
 DN6221
 DN6221.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6221
 DN6221.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6221
 DN6221.The ellipsoidal height was determined by GPS observations
 DN6221.and is referenced to NAD 83.
 DN6221
 DN6221. The following values were computed from the NAD 83(2011) position.
 DN6221
 DN6221;                    North         East     Units Scale Factor Converg.
 DN6221;SPC MD       -   215,996.903   500,657.462   MT  1.00003115   +0 44 08.2
 DN6221;SPC MD       -   708,649.84  1,642,573.69   sFT  1.00003115   +0 44 08.2
 DN6221;UTM  18      - 4,384,422.776   428,921.314   MT  0.99966220   -0 31 40.3
 DN6221
 DN6221!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6221!SPC MD       -   1.00000496  x   1.00003115  =   1.00003611
 DN6221!UTM  18      -   1.00000496  x   0.99966220  =   0.99966716
 DN6221
 DN6221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2892184422(NAD 83)
 DN6221
 DN6221                          SUPERSEDED SURVEY CONTROL
 DN6221
 DN6221  NAD 83(2007)-  39 36 23.76692(N)    075 49 40.65242(W) AD(2002.00) 1
 DN6221  ELLIP H (02/23/12)  -31.610  (m)                       GP(2002.00) 4 1
 DN6221
 DN6221.Superseded values are not recommended for survey control.
 DN6221
 DN6221.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6221.See file dsdata.pdf to determine how the superseded data were derived.
 DN6221
 DN6221_MARKER: DD = SURVEY DISK
 DN6221_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6221_STAMPING: EDER 2008
 DN6221_MARK LOGO: MD-015
 DN6221_PROJECTION: FLUSH
 DN6221_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6221_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6221+STABILITY: SURFACE MOTION
 DN6221_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6221+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6221
 DN6221  HISTORY     - Date     Condition        Report By
 DN6221  HISTORY     - 20081204 MONUMENTED       GWS
 DN6221
 DN6221                          STATION DESCRIPTION
 DN6221
 DN6221'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6221'THE STATION IS LOCATED IN EDER PARK IN THE TOWN OF ELKTON.
 DN6221'
 DN6221'TO REACH FROM THE JUNCTION OF US 40 AND MD 213, GO NORTH ON MD 213 FOR
 DN6221'0.46 MI (0.7 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO
 DN6221'NORTHEAST ON HOWARD STREET FOR 0.24 MI (0.4 KM) TO THE STATION ON THE
 DN6221'RIGHT.
 DN6221'
 DN6221'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6221'CONCRETE MONUMENT, 259 FT (78.9 M) SOUTHEAST OF THE CENTERLINE OF
 DN6221'HOWARD STREET, OUTSIDE OF THE CENTERFIELD FENCE OF THE SECOND BALL
 DN6221'FIELD ALONG HOWARD STREET, 24.0 FT (7.3 M) SOUTHEAST OF THE SOUTHEAST
 DN6221'CORNER OF THE CONCRETE PAD UNDER THE BLEACHERS, 36.6 FT (11.2 M)
 DN6221'SOUTHWEST OF A POST ON THE SCOREBOARD AND 89.3 FT (27.2 M) NORTH OF
 DN6221'STADIUM LIGHT B2 ON THE SMALLER BALL FIELD TO THE SOUTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8205 ***********************************************************************
 DH8205  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8205  DESIGNATION -  EDGAR
 DH8205  PID         -  DH8205
 DH8205  STATE/COUNTY-  MD/DORCHESTER
 DH8205  COUNTRY     -  US
 DH8205  USGS QUAD   -  CAMBRIDGE (2016)
 DH8205
 DH8205                         *CURRENT SURVEY CONTROL
 DH8205  ______________________________________________________________________
 DH8205* NAD 83(2011) POSITION- 38 30 06.08543(N) 076 05 29.02786(W)   ADJUSTED
 DH8205* NAD 83(2011) ELLIP HT-   -33.712 (meters)        (06/27/12)   ADJUSTED
 DH8205* NAD 83(2011) EPOCH   -  2010.00
 DH8205* NAVD 88 ORTHO HEIGHT -     1.42  (meters)        4.7   (feet) GPS OBS
 DH8205  ______________________________________________________________________
 DH8205  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8205  GEOID HEIGHT    -        -35.093 (meters)                     GEOID03
 DH8205  GEOID HEIGHT    -        -35.125 (meters)                     GEOID18
 DH8205  NAD 83(2011) X  -  1,201,370.498 (meters)                     COMP
 DH8205  NAD 83(2011) Y  - -4,851,388.940 (meters)                     COMP
 DH8205  NAD 83(2011) Z  -  3,949,155.258 (meters)                     COMP
 DH8205  LAPLACE CORR    -         -3.14  (seconds)                    DEFLEC18
 DH8205
 DH8205  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8205  Standards:
 DH8205         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8205            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8205  -------------------------------------------------------------------
 DH8205  NETWORK    0.86   1.94           0.38   0.32   0.99      0.04502423
 DH8205  -------------------------------------------------------------------
 DH8205  Click here for local accuracies and other accuracy information.
 DH8205
 DH8205.The horizontal coordinates were established by GPS observations
 DH8205.and adjusted by the National Geodetic Survey in June 2012.
 DH8205
 DH8205.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8205.been affixed to the stable North American tectonic plate. See 
 DH8205.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8205
 DH8205.The horizontal coordinates are valid at the epoch date displayed above
 DH8205.which is a decimal equivalence of Year/Month/Day.
 DH8205
 DH8205.The orthometric height was determined by GPS observations and a
 DH8205.high-resolution geoid model using precise GPS observation and
 DH8205.processing techniques.
 DH8205
 DH8205.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8205.GEOID18 height accuracy estimate available here.
 DH8205
 DH8205.Click photographs - Photos may exist for this station.
 DH8205
 DH8205.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8205
 DH8205.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8205
 DH8205.The ellipsoidal height was determined by GPS observations
 DH8205.and is referenced to NAD 83.
 DH8205
 DH8205. The following values were computed from the NAD 83(2011) position.
 DH8205
 DH8205;                    North         East     Units Scale Factor Converg.
 DH8205;SPC MD       -    93,085.381   479,254.529   MT  0.99997104   +0 34 13.0
 DH8205;SPC MD       -   305,397.62  1,572,354.23   sFT  0.99997104   +0 34 13.0
 DH8205;UTM  18      - 4,262,045.295   404,833.451   MT  0.99971153   -0 40 46.2
 DH8205
 DH8205!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8205!SPC MD       -   1.00000529  x   0.99997104  =   0.99997633
 DH8205!UTM  18      -   1.00000529  x   0.99971153  =   0.99971682
 DH8205
 DH8205_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0483362045(NAD 83)
 DH8205
 DH8205                          SUPERSEDED SURVEY CONTROL
 DH8205
 DH8205  NAD 83(2007)-  38 30 06.08571(N)    076 05 29.02872(W) AD(2002.00) B
 DH8205  ELLIP H (02/12/09)  -33.680  (m)                       GP(2002.00) 5 1
 DH8205  NAD 83(1991)-  38 30 06.08592(N)    076 05 29.02830(W) AD(       ) B
 DH8205  ELLIP H (02/28/06)  -33.672  (m)                       GP(       ) 5 1
 DH8205
 DH8205.Superseded values are not recommended for survey control.
 DH8205
 DH8205.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8205.See file dsdata.pdf to determine how the superseded data were derived.
 DH8205
 DH8205_MARKER: F = FLANGE-ENCASED ROD
 DH8205_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DH8205_STAMPING: EDGAR 2005
 DH8205_MARK LOGO: NONE
 DH8205_PROJECTION: RECESSED 15 CENTIMETERS
 DH8205_MAGNETIC: I = MARKER IS A STEEL ROD
 DH8205_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH8205_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8205+SATELLITE: SATELLITE OBSERVATIONS - March 19, 2015
 DH8205_ROD/PIPE-DEPTH: 20.1 meters
 DH8205_SLEEVE-DEPTH  : 0.5 meters
 DH8205
 DH8205  HISTORY     - Date     Condition        Report By
 DH8205  HISTORY     - 20050907 MONUMENTED       NGS
 DH8205  HISTORY     - 20070218 GOOD             USPSQD
 DH8205  HISTORY     - 20121103 GOOD             ARCSHE
 DH8205  HISTORY     - 20150319 GOOD             USGS
 DH8205
 DH8205                          STATION DESCRIPTION
 DH8205
 DH8205'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (FCM)
 DH8205'THIS MARK IS EITHER ON THE EAST EDGE OF COUNTY ROAD R.O.W. OR WEST
 DH8205'EDGE OF PRIVATE  PROPERTY (EDGAR FAMILY, RIVERDALE FARMS), AT THE
 DH8205'FORMER SITE OF A SMALL CHURCH AND OF  BENCHMARK X 52, AT A SMALL
 DH8205'UNMARKED CEMETERY TO EAST AND TWO LARGE LONE TREES TO  EAST. IT IS THE
 DH8205'TOP CENTER OF A STAINLESS STEEL ROD UNDER A LOGO CAP WITH NO AGENCY
 DH8205'ID,  WITHIN A 6-INCH PVC PIPE THAT IS SURROUNDED BY A CONCRETE COLLAR.
 DH8205'THE ACCESS LID IS HELD IN  PLACE WITH A SLOTTED HEAD SCREW UNLESS THE
 DH8205'SCREW GETS LOST.
 DH8205'
 DH8205'THE MARK IS 4.35 MILES NORTHERLY ALONG MAPLE DAM RD FROM KEY WALLACE
 DH8205'DRIVE, 3.4 MILES  SOUTH ALONG SAME FROM STATE ROUTE 16, 1.0 MILE SOUTH
 DH8205'OF LUTHY LANE.
 DH8205'
 DH8205'IT IS BETWEEN THE NORTH END OF A GRAVEL PULL-OFF AREA AND A POWER POLE
 DH8205'(NUMBERS 504, 127,  029), 6.5 FT SOUTH OF THE LINE BETWEEN THE POLE
 DH8205'AND ITS GUY WIRE TO WEST, 38 FT WEST OF THE  LARGER AND MORE WESTERLY
 DH8205'TREE, 33 FT EAST OF CENTERLINE OF MAPLE DAM RD (TWO-LANE WITH  GRASS
 DH8205'OR NONEXISTENT SHOULDERS), 14.5 FT EAST OF CENTERLINE OF 24-INCH
 DH8205'C.M.P. ALONG RD,  10.5 FT SW OF THE POLE, 7.0 FT WEST OF A 1-INCH PVC
 DH8205'PIPE STICKING UP 8 FT. THE AREA AROUND THE  MARK IS WILD GRASS THAT
 DH8205'WILL PROBABLY GROW KIND OF HIGH.
 DH8205'
 DH8205'THE LOGO CAP IS FLUSH WITH THE GROUND. THE ROD IS 0.5 FT BELOW CAP.
 DH8205
 DH8205                          STATION RECOVERY (2007)
 DH8205
 DH8205'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 DH8205'RECOVERED IN GOOD CONDITION.
 DH8205
 DH8205                          STATION RECOVERY (2012)
 DH8205
 DH8205'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2012 (MRA)
 DH8205'RECOVERED IN GOOD CONDITION.
 DH8205
 DH8205                          STATION RECOVERY (2015)
 DH8205
 DH8205'RECOVERY NOTE BY US GEOLOGICAL SURVEY 2015 (CWN)
 DH8205'RECOVERED AS DESCRIBED. VERTICAL ELEVATION FOUND TO BE 4.393 FT ASL
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1103 ***********************************************************************
 HV1103  DESIGNATION -  EDGE
 HV1103  PID         -  HV1103
 HV1103  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1103  COUNTRY     -  US
 HV1103  USGS QUAD   -  ANACOSTIA (2016)
 HV1103
 HV1103                         *CURRENT SURVEY CONTROL
 HV1103  ______________________________________________________________________
 HV1103* NAD 83(1993) POSITION- 38 50 09.17710(N) 076 52 34.08669(W)   ADJUSTED
 HV1103* NAVD 88 ORTHO HEIGHT -    80.756 (meters)      264.95  (feet) ADJUSTED
 HV1103  ______________________________________________________________________
 HV1103  GEOID HEIGHT    -        -32.496 (meters)                     GEOID18
 HV1103  LAPLACE CORR    -         -5.06  (seconds)                    DEFLEC18
 HV1103  DYNAMIC HEIGHT  -         80.711 (meters)      264.80  (feet) COMP
 HV1103  MODELED GRAVITY -    980,070.6   (mgal)                       NAVD 88
 HV1103
 HV1103  HORZ ORDER      -  SECOND
 HV1103  VERT ORDER      -  SECOND    CLASS 0
 HV1103
 HV1103.The horizontal coordinates were established by classical geodetic methods
 HV1103.and adjusted by the National Geodetic Survey in November 1994.
 HV1103
 HV1103.The orthometric height was determined by differential leveling and
 HV1103.adjusted by the NATIONAL GEODETIC SURVEY
 HV1103.in June 1991.
 HV1103
 HV1103.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1103.GEOID18 height accuracy estimate available here.
 HV1103
 HV1103.Click photographs - Photos may exist for this station.
 HV1103
 HV1103.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1103
 HV1103.The dynamic height is computed by dividing the NAVD 88
 HV1103.geopotential number by the normal gravity value computed on the
 HV1103.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1103.degrees latitude (g = 980.6199 gals.).
 HV1103
 HV1103.The modeled gravity was interpolated from observed gravity values.
 HV1103
 HV1103. The following values were computed from the NAD 83(1993) position.
 HV1103
 HV1103;                    North         East     Units Scale Factor Converg.
 HV1103;SPC MD       -   129,795.083   410,754.166   MT  0.99995009   +0 04 39.9
 HV1103;SPC MD       -   425,836.03  1,347,615.96   sFT  0.99995009   +0 04 39.9
 HV1103;UTM  18      - 4,300,236.743   337,161.253   MT  0.99992653   -1 10 36.4
 HV1103
 HV1103!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1103!SPC MD       -   0.99999243  x   0.99995009  =   0.99994252
 HV1103!UTM  18      -   0.99999243  x   0.99992653  =   0.99991896
 HV1103
 HV1103_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3716100236(NAD 83)
 HV1103
 HV1103                          SUPERSEDED SURVEY CONTROL
 HV1103
 HV1103  NAD 83(1991)-  38 50 09.17641(N)    076 52 34.08699(W) AD(       ) 2
 HV1103  NAD 83(1986)-  38 50 09.17488(N)    076 52 34.09965(W) AD(       ) 2
 HV1103  NAD 27      -  38 50 08.76804(N)    076 52 35.20060(W) AD(       ) 2
 HV1103  NGVD 29              81.00   (m)          265.7    (f) LEVELING    3  
 HV1103  NGVD 29 (11/26/84)   81.000  (m)          265.75   (f) ADJUSTED    2 0
 HV1103
 HV1103.Superseded values are not recommended for survey control.
 HV1103
 HV1103.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1103.See file dsdata.pdf to determine how the superseded data were derived.
 HV1103
 HV1103_MARKER: DE = TRAVERSE STATION DISK
 HV1103_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1103_STAMPING: EDGE 1958
 HV1103_MARK LOGO: CGS
 HV1103_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1103+STABILITY: SURFACE MOTION
 HV1103
 HV1103  HISTORY     - Date     Condition        Report By
 HV1103  HISTORY     - 1958     MONUMENTED       CGS
 HV1103  HISTORY     - 1958     GOOD             CGS
 HV1103  HISTORY     - 1968     POOR             CGS
 HV1103  HISTORY     - 1971     GOOD             NGS
 HV1103  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV1103
 HV1103                          STATION DESCRIPTION
 HV1103
 HV1103'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1103'THIS IS AN UNOCCUPIED TRAVERSE STATION.
 HV1103'
 HV1103'STATION IS LOCATED ABOUT 9.0 MILES EAST-SOUTHEAST OF THE CENTER
 HV1103'OF WASHINGTON D.C., AND ABOUT 0.5 MILE SOUTHWEST OF THE SIGNAL
 HV1103'LIGHT AT THE MAIN INTERSECTION IN FORESTVILLE, AND ALONG THE
 HV1103'SOUTH SIDE OF A ROAD THAT RUNS BETWEEN SUITLAND PARKWAY AND
 HV1103'STATE HIGHWAY NO. 4.  STATION IS 26 FEET NORTHWEST OF A PILLAR
 HV1103'AT THE SOUTH SIDE OF DRIVEWAY, 24 FEET SOUTHWEST OF A PILLAR AT
 HV1103'NORTH SIDE OF DRIVEWAY, 14-1/2 FEET EAST OF APPROXIMATE
 HV1103'CENTERLINE OF SURFACED ROAD AND 2 FEET WEST OF CURB.  THE MARK IS
 HV1103'A STANDARD TRAVERSE DISK SET IN A 12X12 INCH CONCRETE MONUMENT,
 HV1103'FLUSH WITH THE GROUND AND THE DISK IS STAMPED EDGE 1958.
 HV1103'
 HV1103'TO REACH FROM STATION FOREST GO SOUTHWEST FOR 0.1 MILE TO STATE
 HV1103'HIGHWAY NO. 4.  TURN RIGHT AND GO NORTHWEST ON STATE HIGHWAY
 HV1103'NO. 4 FOR 0.3 MILE TO TRAFFIC LIGHT AT MAIN INTERSECTION IN
 HV1103'FORESTVILLE.  TURN LEFT AND GO SOUTHWESTERLY ON SURFACED ROAD FOR
 HV1103'0.6 MILES TO FOUR WHITE PILLARS ON LEFT (EAST) SIDE OF ROAD AND
 HV1103'STATION AS DESCRIBED.
 HV1103'
 HV1103'THIS TRAVERSE STATION IS THE AZIMUTH MARK FOR TRIANGULATION
 HV1103'STATION FOREST 1958.
 HV1103'
 HV1103'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 HV1103
 HV1103                          STATION RECOVERY (1958)
 HV1103
 HV1103'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV1103'0.6 MI S FROM FORESTVILLE.
 HV1103'ABOUT 0.6 MILE SOUTH ALONG THE FORESTVILLE ROAD FROM THE INTERSECTION
 HV1103'OF STATE HIGHWAY 4 AT FORESTVILLE, 15 FEET SOUTHEAST OF THE
 HV1103'CENTER LINE OF THE ROAD, 41.6 FEET NORTH OF THE SOUTH POST OF
 HV1103'FOUR CONCRETE POST, 2 FEET NORTHWEST OF A CONCRETE WALL 1-FOOT
 HV1103'HIGH, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 HV1103
 HV1103                          STATION RECOVERY (1968)
 HV1103
 HV1103'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (WMR)
 HV1103'STATION RECOVERED IN FAIR CONDITION.  THE MARK HAS BEEN STRUCK
 HV1103'BY A GRADER AND IS LEANING SLIGHTLY.  THE MARK IS IN THE SHOULDER
 HV1103'OF THE ROAD AND WAS COVERED WITH SAND AT THE TIME OF THIS
 HV1103'RECOVERY.  THE 1958 DESCRIPTION IS ADEQUATE FOR RECOVERY.
 HV1103
 HV1103                          STATION RECOVERY (1971)
 HV1103
 HV1103'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (JKW)
 HV1103'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.  ADDITIONAL
 HV1103'MEASUREMENTS WERE TAKEN--STATION IS 0.2 MILE WEST OF THE EAST END OF
 HV1103'EDGEWATER DRIVE, 131.0 FEET EAST OF CENTER OF LAUNCHING RAMP AT
 HV1103'FOOT OF CENTER STREET, 27.7 FEET EAST OF WESTERLY FLAGPOLE, 26.0
 HV1103'FEET NORTHWEST OF EASTERLY FLAGPOLE, AND 2.2 FEET NORTH OF
 HV1103'SOUTHWEST CORNER OF WOODEN PIER.  IT IS DIRECTLY UNDER THE WESTERLY
 HV1103'EDGE OF THIS PIER, AND SET INTO AN OLD BULKHEAD.
 HV1103
 HV1103                          STATION RECOVERY (1971)
 HV1103
 HV1103'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV1103'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7144 ***********************************************************************
 HV7144  DESIGNATION -  EDGE
 HV7144  PID         -  HV7144
 HV7144  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7144  COUNTRY     -  US
 HV7144  USGS QUAD   -  SOUTH RIVER (2016)
 HV7144
 HV7144                         *CURRENT SURVEY CONTROL
 HV7144  ______________________________________________________________________
 HV7144* NAD 83(1991) POSITION- 38 57 03.39157(N) 076 33 34.70630(W)   ADJUSTED
 HV7144* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7144  ______________________________________________________________________
 HV7144  GEOID HEIGHT    -        -33.235 (meters)                     GEOID18
 HV7144  LAPLACE CORR    -         -4.61  (seconds)                    DEFLEC18
 HV7144  HORZ ORDER      -  THIRD
 HV7144
 HV7144.The horizontal coordinates were established by classical geodetic methods
 HV7144.and adjusted by the National Geodetic Survey in January 1992.
 HV7144
 HV7144.The orthometric height was scaled from a topographic map.
 HV7144
 HV7144.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7144.GEOID18 height accuracy estimate available here.
 HV7144
 HV7144.Click photographs - Photos may exist for this station.
 HV7144
 HV7144.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7144
 HV7144. The following values were computed from the NAD 83(1991) position.
 HV7144
 HV7144;                    North         East     Units Scale Factor Converg.
 HV7144;SPC MD       -   142,652.375   438,171.046   MT  0.99995070   +0 16 35.0
 HV7144;SPC MD       -   468,018.67  1,437,566.17   sFT  0.99995070   +0 16 35.0
 HV7144;UTM  18      - 4,312,489.126   364,851.235   MT  0.99982491   -0 58 50.2
 HV7144
 HV7144!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7144!SPC MD       -   1.00000510  x   0.99995070  =   0.99995580
 HV7144!UTM  18      -   1.00000510  x   0.99982491  =   0.99983000
 HV7144
 HV7144:                Primary Azimuth Mark                     Grid Az
 HV7144:SPC MD       -  SIMMON                                   357 54 21.2
 HV7144:UTM  18      -  SIMMON                                   359 09 46.4
 HV7144
 HV7144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6485112489(NAD 83)
 HV7144
 HV7144|---------------------------------------------------------------------|
 HV7144| PID    Reference Object                     Distance      Geod. Az  |
 HV7144|                                                           dddmmss.s |
 HV7144| HV7147 SOUTH RIVER BRIDGE HOUSE SIREN      378.190 METERS 08121     |
 HV7144| HV7146 LAMP                                297.743 METERS 12328     |
 HV7144| CX2738 EDGE RM                              21.605 METERS 22013     |
 HV7144| HV7143 SIMMON                              APPROX. 0.6 KM 3581056.2 |
 HV7144|---------------------------------------------------------------------|
 HV7144
 HV7144                          SUPERSEDED SURVEY CONTROL
 HV7144
 HV7144  NAD 83(1986)-  38 57 03.38819(N)    076 33 34.71733(W) AD(       ) 3
 HV7144  NAD 27      -  38 57 02.98900(N)    076 33 35.85700(W) AD(       ) 3
 HV7144
 HV7144.Superseded values are not recommended for survey control.
 HV7144
 HV7144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7144.See file dsdata.pdf to determine how the superseded data were derived.
 HV7144
 HV7144_MARKER: DS = TRIANGULATION STATION DISK
 HV7144_SETTING: 0 = UNSPECIFIED SETTING
 HV7144_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7144+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2005
 HV7144
 HV7144  HISTORY     - Date     Condition        Report By
 HV7144  HISTORY     - 1933     MONUMENTED       CGS
 HV7144  HISTORY     - 1960     GOOD             CGS
 HV7144  HISTORY     - 20041010 GOOD             INDIV
 HV7144  HISTORY     - 20051215 GOOD             USPSQD
 HV7144
 HV7144                          STATION DESCRIPTION
 HV7144
 HV7144'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7144'ON THE S SHORE OF SOUTH RIVER ABOUT 300 METERS NW OF SOUTH RIVER
 HV7144'BRIDGE ON A CONCRETE RETAINING WALL ON THE LAWN OF A SUMMER HOUSE
 HV7144'IN EDGEWATER DEVELOPMENT.  STATION IS ON THE W SECTION OF THE WALL
 HV7144'14.25 METERS FROM N END OF WALL.
 HV7144'
 HV7144'STATION IS MARKED, AS DESCRIBED. BY A STANDARD BRONZE DISK SET IN
 HV7144'DRILL HOLE IN CONCRETE RETAINING WALL.
 HV7144'
 HV7144'REFERENCE MARK IS A STANDARD BRONZE DISK SET IN CONCRETE AS DESCRIBED.
 HV7144
 HV7144                          STATION RECOVERY (1960)
 HV7144
 HV7144'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7144'STATION AND REFERENCE MARK RECOVERED AS DESCRIBED IN GOOD
 HV7144'CONDITION.  SUPPLEMENTARY INFORMATION FOLLOWS--STATION IS 12.4 FT
 HV7144'NE OF A LONE WILLOW TREE NEAR MARINE RAILWAY, 25 FEET NW OF STEEL
 HV7144'FLAGPOLE (EASTERLY OF 2 FLAGPOLES).
 HV7144'
 HV7144'STATION AND R.M. BOTH STAMPED EDGE 1933.  R.M. IS 37.4 FEET NW OF
 HV7144'A 30 INCH SOFT MAPLE TREE, AND 41 FEET N OF A SUMMER COTTAGE.
 HV7144'(COTTAGE BUILT ON CONCRETE BLOCK PILINGS).
 HV7144
 HV7144                          STATION RECOVERY (2004)
 HV7144
 HV7144'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2004 (GWE)
 HV7144'MARK FOUND AS GENERALLY DESCRIBED IN 1960 RECOVERY, SET IN A CONCRETE
 HV7144'RETAINING WALL LOCATED ON LEFT SIDE OF PIER OF 227 EDGEWATER DRIVE AT
 HV7144'END OF LAWN AT WATER.
 HV7144
 HV7144                          STATION RECOVERY (2005)
 HV7144
 HV7144'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV7144'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2385 ***********************************************************************
 JV2385  DESIGNATION -  EDGEMONT AZ
 JV2385  PID         -  JV2385
 JV2385  STATE/COUNTY-  MD/FREDERICK
 JV2385  COUNTRY     -  US
 JV2385  USGS QUAD   -  FREDERICK (2016)
 JV2385
 JV2385                         *CURRENT SURVEY CONTROL
 JV2385  ______________________________________________________________________
 JV2385* NAD 83(1986) POSITION- 39 25 44.     (N) 077 29 15.     (W)   SCALED
 JV2385* NAVD 88 ORTHO HEIGHT -   196.754 (meters)      645.52  (feet) ADJUSTED
 JV2385  ______________________________________________________________________
 JV2385  GEOID HEIGHT    -        -32.854 (meters)                     GEOID18
 JV2385  DYNAMIC HEIGHT  -        196.647 (meters)      645.17  (feet) COMP
 JV2385  MODELED GRAVITY -    980,078.0   (mgal)                       NAVD 88
 JV2385
 JV2385  VERT ORDER      -  SECOND    CLASS 0
 JV2385
 JV2385.The horizontal coordinates were scaled from a map and have
 JV2385.an estimated accuracy of +/- 6 seconds.
 JV2385
 JV2385.The orthometric height was determined by differential leveling and
 JV2385.adjusted by the NATIONAL GEODETIC SURVEY
 JV2385.in June 1991.
 JV2385
 JV2385.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2385.GEOID18 height accuracy estimate available here.
 JV2385
 JV2385.Click photographs - Photos may exist for this station.
 JV2385
 JV2385.The dynamic height is computed by dividing the NAVD 88
 JV2385.geopotential number by the normal gravity value computed on the
 JV2385.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2385.degrees latitude (g = 980.6199 gals.).
 JV2385
 JV2385.The modeled gravity was interpolated from observed gravity values.
 JV2385
 JV2385;                    North         East    Units  Estimated Accuracy
 JV2385;SPC MD       -   195,730.      358,030.      MT  (+/- 180 meters Scaled)
 JV2385
 JV2385_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ858673(NAD 83)
 JV2385
 JV2385                          SUPERSEDED SURVEY CONTROL
 JV2385
 JV2385  NGVD 29 (11/26/84)  196.971  (m)          646.23   (f) ADJUSTED    2 0
 JV2385
 JV2385.Superseded values are not recommended for survey control.
 JV2385
 JV2385.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2385.See file dsdata.pdf to determine how the superseded data were derived.
 JV2385
 JV2385_MARKER: DZ = AZIMUTH MARK DISK
 JV2385_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2385_STAMPING: EDGEMONT AZ 1957
 JV2385_MARK LOGO: MDBCSM
 JV2385_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2385+STABILITY: SURFACE MOTION
 JV2385
 JV2385  HISTORY     - Date     Condition        Report By
 JV2385  HISTORY     - 1957     MONUMENTED       MDBCSM
 JV2385  HISTORY     - 1958     GOOD             CGS
 JV2385
 JV2385                          STATION DESCRIPTION
 JV2385
 JV2385'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2385'4.4 MI NW FROM FREDERICK.
 JV2385'4.4 MILES NORTHWEST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2385'AT FREDERICK, 0.15 MILE SOUTHEAST OF A PICNIC AREA ALONG THE
 JV2385'NORTHEAST SIDE OF THE HIGHWAY, 33.0 FEET WEST OF THE CENTER
 JV2385'LINE OF THE HIGHWAY, 15 FEET NORTH OF A 9-INCH OAK TREE WHICH
 JV2385'IS AT THE NORTH END OF A CUT BANK, 14.6 FEET NORTHWEST OF THE
 JV2385'SOUTHEAST IRON GUARDRAIL POST, ABOUT 1 FOOT LOWER THAN THE
 JV2385'HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.3
 JV2385'FOOT ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2686 ***********************************************************************
 HU2686  DESIGNATION -  EDM 1
 HU2686  PID         -  HU2686
 HU2686  STATE/COUNTY-  MD/QUEEN ANNES
 HU2686  COUNTRY     -  US
 HU2686  USGS QUAD   -  RIDGELY (2017)
 HU2686
 HU2686                         *CURRENT SURVEY CONTROL
 HU2686  ______________________________________________________________________
 HU2686* NAD 83(1991) POSITION- 38 55 27.07647(N) 075 57 28.89482(W)   ADJUSTED
 HU2686* NAVD 88 ORTHO HEIGHT -    20.    (meters)       66.    (feet) SCALED
 HU2686  ______________________________________________________________________
 HU2686  GEOID HEIGHT    -        -34.502 (meters)                     GEOID18
 HU2686  LAPLACE CORR    -         -3.64  (seconds)                    DEFLEC18
 HU2686  HORZ ORDER      -  THIRD
 HU2686
 HU2686.The horizontal coordinates were established by classical geodetic methods
 HU2686.and adjusted by the National Geodetic Survey in January 1992.
 HU2686
 HU2686.The orthometric height was scaled from a topographic map.
 HU2686
 HU2686.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2686.GEOID18 height accuracy estimate available here.
 HU2686
 HU2686.Click photographs - Photos may exist for this station.
 HU2686
 HU2686.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2686
 HU2686. The following values were computed from the NAD 83(1991) position.
 HU2686
 HU2686;                    North         East     Units Scale Factor Converg.
 HU2686;SPC MD       -   140,106.008   490,352.213   MT  0.99995020   +0 39 14.3
 HU2686;SPC MD       -   459,664.46  1,608,763.89   sFT  0.99995020   +0 39 14.3
 HU2686;UTM  18      - 4,308,799.933   416,953.542   MT  0.99968492   -0 36 07.0
 HU2686
 HU2686!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2686!SPC MD       -   1.00000229  x   0.99995020  =   0.99995249
 HU2686!UTM  18      -   1.00000229  x   0.99968492  =   0.99968721
 HU2686
 HU2686_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1695308799(NAD 83)
 HU2686
 HU2686|---------------------------------------------------------------------|
 HU2686| PID    Reference Object                     Distance      Geod. Az  |
 HU2686|                                                           dddmmss.s |
 HU2686| HU2689 QUEEN AZ MK 2                        65.933 METERS 29712     |
 HU2686| HU2752 QUEEN RESET                         358.132 METERS 31957     |
 HU2686|---------------------------------------------------------------------|
 HU2686
 HU2686                          SUPERSEDED SURVEY CONTROL
 HU2686
 HU2686  NAD 83(1986)-  38 55 27.07056(N)    075 57 28.90697(W) AD(       ) 3
 HU2686
 HU2686.Superseded values are not recommended for survey control.
 HU2686
 HU2686.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2686.See file dsdata.pdf to determine how the superseded data were derived.
 HU2686
 HU2686_MARKER: I = METAL ROD
 HU2686_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HU2686_SP_SET: DRIVEN INTO GROUND
 HU2686_MARK LOGO: MDSHA
 HU2686_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2686_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2686_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2686+SATELLITE: SATELLITE OBSERVATIONS - 1980
 HU2686
 HU2686  HISTORY     - Date     Condition        Report By
 HU2686  HISTORY     - 1980     MONUMENTED       MDSHA
 HU2686  HISTORY     - 20020124 MARK NOT FOUND   USPSQD
 HU2686
 HU2686                          STATION DESCRIPTION
 HU2686
 HU2686'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1980
 HU2686'THE STATION IS LOCATED ABOUT 19 KM (11.80 MI) NORTH-NORTHEAST OF
 HU2686'EASTON, 7.75 KM (4.80 MI) WEST-NORTHWEST OF DENTON, 0.9 KM (0.55 MI)
 HU2686'NORTH OF QUEEN ANNE AND NEAR THE INTERSECTION OF STATE HIGHWAYS 309
 HU2686'AND 404.  OWNERSHIP--MARYLAND ARMY NATIONAL GUARD.
 HU2686'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 309 AND 404 WHICH IS
 HU2686'IN THE SMALL TOWN OF QUEEN ANNE, GO NORTHERLY ON STATE HIGHWAY 309 FOR
 HU2686'0.1 KM (0.05 MI) TO A ROAD LEADING EAST TO THE MARYLAND ARMY NATIONAL
 HU2686'GUARD BUILDING.  TURN RIGHT AND GO SOUTHEAST ACROSS COUNTRY FOR 0.15
 HU2686'KM (0.10 MI) TO THE STATION ON SMALL LOW HILL.
 HU2686'THE POINT IS MARKED BY A YELLOW CAP ATOP A 0.02 M (0.1 FT) ROUND IRON
 HU2686'ROD DRIVEN 1.0 M (3.3 FT) INTO THE GROUND.  IT IS 40 M (131.2 FT)
 HU2686'NORTH OF STATE HIGHWAY 404, 76.2 M (250.0 FT) EAST OF THE CENTER OF
 HU2686'STATE HIGHWAY 309, 30.4 M (99.7 FT) NORTHEAST OF A POWERLINE POLE
 HU2686'NUMBERED 13-1/2 AND 13.19 M (43.3 FT) NORTH-NORTHEAST OF A SIGN
 HU2686'MARYLAND ARMY NATIONAL GUARD.
 HU2686
 HU2686                          STATION RECOVERY (2002)
 HU2686
 HU2686'RECOVERY NOTE BY US POWER SQUADRON 2002 (KNP)
 HU2686'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0650 ***********************************************************************
 HV0650  DESIGNATION -  EDWARDS
 HV0650  PID         -  HV0650
 HV0650  STATE/COUNTY-  MD/ST MARYS
 HV0650  COUNTRY     -  US
 HV0650  USGS QUAD   -  LEONARDTOWN (2016)
 HV0650
 HV0650                         *CURRENT SURVEY CONTROL
 HV0650  ______________________________________________________________________
 HV0650* NAD 83(1993) POSITION- 38 22 28.75898(N) 076 44 36.86166(W)   ADJUSTED
 HV0650* NAVD 88 ORTHO HEIGHT -    42.838 (meters)      140.54  (feet) ADJUSTED
 HV0650  ______________________________________________________________________
 HV0650  GEOID HEIGHT    -        -33.711 (meters)                     GEOID18
 HV0650  LAPLACE CORR    -         -1.65  (seconds)                    DEFLEC18
 HV0650  DYNAMIC HEIGHT  -         42.812 (meters)      140.46  (feet) COMP
 HV0650  MODELED GRAVITY -    980,021.3   (mgal)                       NAVD 88
 HV0650
 HV0650  HORZ ORDER      -  FIRST
 HV0650  VERT ORDER      -  SECOND    CLASS 0
 HV0650
 HV0650.The horizontal coordinates were established by classical geodetic methods
 HV0650.and adjusted by the National Geodetic Survey in November 1994.
 HV0650
 HV0650.The orthometric height was determined by differential leveling and
 HV0650.adjusted by the NATIONAL GEODETIC SURVEY
 HV0650.in June 1991.
 HV0650
 HV0650.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0650.GEOID18 height accuracy estimate available here.
 HV0650
 HV0650.Click photographs - Photos may exist for this station.
 HV0650
 HV0650.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0650
 HV0650.The dynamic height is computed by dividing the NAVD 88
 HV0650.geopotential number by the normal gravity value computed on the
 HV0650.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0650.degrees latitude (g = 980.6199 gals.).
 HV0650
 HV0650.The modeled gravity was interpolated from observed gravity values.
 HV0650
 HV0650. The following values were computed from the NAD 83(1993) position.
 HV0650
 HV0650;                    North         East     Units Scale Factor Converg.
 HV0650;SPC MD       -    78,621.224   422,407.274   MT  0.99998785   +0 09 39.4
 HV0650;SPC MD       -   257,943.13  1,385,847.86   sFT  0.99998785   +0 09 39.4
 HV0650;UTM  18      - 4,248,824.020   347,695.612   MT  0.99988568   -1 04 57.4
 HV0650
 HV0650!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0650!SPC MD       -   0.99999857  x   0.99998785  =   0.99998642
 HV0650!UTM  18      -   0.99999857  x   0.99988568  =   0.99988425
 HV0650
 HV0650:                Primary Azimuth Mark                     Grid Az
 HV0650:SPC MD       -  EDWARDS AZ MK                            087 36 12.0
 HV0650:UTM  18      -  EDWARDS AZ MK                            088 50 48.8
 HV0650
 HV0650_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4769548824(NAD 83)
 HV0650
 HV0650|---------------------------------------------------------------------|
 HV0650| PID    Reference Object                     Distance      Geod. Az  |
 HV0650|                                                           dddmmss.s |
 HV0650| CX2740 EDWARDS AZ MK                                      0874551.4 |
 HV0650| HV6848 MORGANZA ST JOSEPHS CH TOWER        APPROX. 4.1 KM 0875500.1 |
 HV0650| HV0649 EDWARDS RM 1                         32.574 METERS 11024     |
 HV0650| HV7065 BUSHWOOD SACRED HEART CH SPIRE      APPROX. 9.1 KM 2075543.4 |
 HV0650| HV0651 EDWARDS RM 2                         31.259 METERS 22401     |
 HV0650|---------------------------------------------------------------------|
 HV0650
 HV0650                          SUPERSEDED SURVEY CONTROL
 HV0650
 HV0650  NAD 83(1991)-  38 22 28.75860(N)    076 44 36.86509(W) AD(       ) 1
 HV0650  NAD 83(1986)-  38 22 28.75870(N)    076 44 36.87725(W) AD(       ) 1
 HV0650  NAD 27      -  38 22 28.30543(N)    076 44 37.99950(W) AD(       ) 1
 HV0650  NGVD 29              43.10   (m)          141.4    (f) LEVELING    3  
 HV0650  NGVD 29 (11/26/84)   43.104  (m)          141.42   (f) ADJUSTED    2 0
 HV0650
 HV0650.Superseded values are not recommended for survey control.
 HV0650
 HV0650.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0650.See file dsdata.pdf to determine how the superseded data were derived.
 HV0650
 HV0650_MARKER: DS = TRIANGULATION STATION DISK
 HV0650_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0650_STAMPING: EDWARDS 1942
 HV0650_MARK LOGO: CGS
 HV0650_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0650+STABILITY: SURFACE MOTION
 HV0650
 HV0650  HISTORY     - Date     Condition        Report By
 HV0650  HISTORY     - 1942     MONUMENTED       CGS
 HV0650  HISTORY     - 1942     GOOD             CGS
 HV0650  HISTORY     - 1953     GOOD             USGS
 HV0650
 HV0650                          STATION DESCRIPTION
 HV0650
 HV0650'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV0650'STATION IS ABOUT 1.4 MILES SW OF THE SMALL SETTLEMENT OF HELEN
 HV0650'WHICH IS LOCATED 4.5 MILES S OF MECHANICSVILLE ON STATE HIGHWAY 5.
 HV0650'IT IS ON THE PROPERTY OF C.B. EDWARDS, 19 FEET S OF A 4-INCH CEDAR
 HV0650'TREE, 16 FEET N OF THE SE CORNER OF A E-W RAIL FENCE AND A N-S
 HV0650'WIRE FENCE, AT THE SW CORNER OF A CULTIVATED FIELD, AND 38 FEET N
 HV0650'OF THE CENTER OF STATE HIGHWAY 234, AND IS STAMPED EDWARDS 1942
 HV0650'AND PROJECTS ABOUT 4 INCHES.
 HV0650'
 HV0650'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 HV0650'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED.
 HV0650'
 HV0650'REFERENCE MARK NO. 1 IS 15 FEET S OF THE CENTER OF HIGHWAY 234
 HV0650'AND 47 FEET W OF A POWER LINE POLE.  IT IS STAMPED EDWARDS NO. 1
 HV0650'1942 AND PROJECTS ABOUT 6 INCHES.  REFERENCE MARKS ARE IN FENCE LINES.
 HV0650'
 HV0650'REFERENCE MARK NO. 2 IS 42 FEET E OF THE DRIVEWAY INTO ANDREW
 HV0650'BURROUGHS HOME AND 23 FEET S OF THE CENTER OF HIGHWAY 234.  IT IS
 HV0650'STAMPED EDWARDS NO. 2 1942 AND PROJECTS ABOUT 6 INCHES.
 HV0650'
 HV0650'THE AZIMUTH MARK IS ABOUT 0.5 MILE ESE OF THE STATION IN A
 HV0650'4-STRAND BARBED-WIRE FENCE LINE, 66 FEET N OF A POWER LINE POLE,
 HV0650'AND 44 FEET WSW OF THE CENTER OF A GRAVEL ROAD.  IT IS STAMPED
 HV0650'EDWARDS 1942 AND PROJECTS ABOUT 4 INCHES.
 HV0650'
 HV0650'TO REACH THE AZIMUTH MARK FROM THE STATION GO EASTERLY ON HIGHWAY
 HV0650'234 FOR 0.5 MILE TO A GRAVEL ROAD RIGHT.  TURN RIGHT AND GO 0.15
 HV0650'MILE TO THE MARK ON THE RIGHT.
 HV0650'
 HV0650'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 5 AND
 HV0650'234 AT HELEN GO WESTERLY ON HIGHWAY 234 FOR 1.35 MILE TO THE
 HV0650'STATION ON THE RIGHT.
 HV0650'
 HV0650'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION LAUREL.
 HV0650'
 HV0650'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION SOMERVILLE.
 HV0650'
 HV0650'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION MILLS.
 HV0650'
 HV0650'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION OWENS.
 HV0650
 HV0650                          STATION RECOVERY (1942)
 HV0650
 HV0650'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0650'2.4 MI E FROM CHAPTICO.
 HV0650'A STANDARD TRIANGULATION DISK SET IN A CONCRETE MONUMENT, STAMPED
 HV0650'EDWARDS 1942 - 37 FEET NORTH OF HIGHWAY NO. 234, 1 FOOT EAST OF
 HV0650'FENCE, 14 FEET NORTH OF CORNER POST OF FENCE, 107 FEET NORTHWEST
 HV0650'EDWARDS RM 1, 9 FEET NORTH OF MARKER POST.
 HV0650
 HV0650                          STATION RECOVERY (1953)
 HV0650
 HV0650'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV0650'STATION FOUND IN GOOD CONDITION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5955 ***********************************************************************
 JV5955  DESIGNATION -  EDWARDS
 JV5955  PID         -  JV5955
 JV5955  STATE/COUNTY-  MD/MONTGOMERY
 JV5955  COUNTRY     -  US
 JV5955  USGS QUAD   -  BELTSVILLE (2016)
 JV5955
 JV5955                         *CURRENT SURVEY CONTROL
 JV5955  ______________________________________________________________________
 JV5955* NAD 83(1991) POSITION- 39 04 54.63674(N) 076 57 03.12760(W)   ADJUSTED
 JV5955* NAVD 88 ORTHO HEIGHT -   136.6   (meters)      448.    (feet) VERTCON3
 JV5955  ______________________________________________________________________
 JV5955  GEOID HEIGHT    -        -32.048 (meters)                     GEOID18
 JV5955  LAPLACE CORR    -         -3.35  (seconds)                    DEFLEC18
 JV5955  HORZ ORDER      -  FIRST
 JV5955
 JV5955.The horizontal coordinates were established by classical geodetic methods
 JV5955.and adjusted by the National Geodetic Survey in January 1992.
 JV5955
 JV5955.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5955.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5955
 JV5955.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5955.GEOID18 height accuracy estimate available here.
 JV5955
 JV5955.Click photographs - Photos may exist for this station.
 JV5955
 JV5955.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5955
 JV5955. The following values were computed from the NAD 83(1991) position.
 JV5955
 JV5955;                    North         East     Units Scale Factor Converg.
 JV5955;SPC MD       -   157,092.898   404,250.968   MT  0.99995629   +0 01 51.0
 JV5955;SPC MD       -   515,395.62  1,326,280.05   sFT  0.99995629   +0 01 51.0
 JV5955;UTM  18      - 4,327,670.363   331,258.875   MT  0.99995061   -1 13 48.6
 JV5955
 JV5955!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5955!SPC MD       -   0.99998360  x   0.99995629  =   0.99993989
 JV5955!UTM  18      -   0.99998360  x   0.99995061  =   0.99993421
 JV5955
 JV5955:                Primary Azimuth Mark                     Grid Az
 JV5955:SPC MD       -  GODDARD 2                                122 16 21.1
 JV5955:UTM  18      -  GODDARD 2                                123 32 00.7
 JV5955
 JV5955_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3125827670(NAD 83)
 JV5955
 JV5955|---------------------------------------------------------------------|
 JV5955| PID    Reference Object                     Distance      Geod. Az  |
 JV5955|                                                           dddmmss.s |
 JV5955| JV5873 GODDARD 2                           APPROX.12.6 KM 1221812.1 |
 JV5955| CA9383 EDWARDS RM 3                         18.034 METERS 21304     |
 JV5955| CA9382 EDWARDS RM 2                         23.599 METERS 29617     |
 JV5955|---------------------------------------------------------------------|
 JV5955
 JV5955                          SUPERSEDED SURVEY CONTROL
 JV5955
 JV5955  NAD 83(1986)-  39 04 54.63585(N)    076 57 03.13794(W) AD(       ) 1
 JV5955  NAD 27      -  39 04 54.24434(N)    076 57 04.22846(W) AD(       ) 1
 JV5955  NGVD 29 (07/19/86)  136.8    (m)          449.     (f) VERT ANG       
 JV5955
 JV5955.Superseded values are not recommended for survey control.
 JV5955
 JV5955.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5955.See file dsdata.pdf to determine how the superseded data were derived.
 JV5955
 JV5955_MARKER: DS = TRIANGULATION STATION DISK
 JV5955_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5955_STAMPING: EDWARDS 1963
 JV5955_MARK LOGO: CGS
 JV5955_PROJECTION: FLUSH
 JV5955_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5955+STABILITY: SURFACE MOTION
 JV5955
 JV5955  HISTORY     - Date     Condition        Report By
 JV5955  HISTORY     - 1966     MONUMENTED       CGS
 JV5955  HISTORY     - 1970     GOOD             NGS
 JV5955  HISTORY     - 20150618 SEE DESCRIPTION  PROFLN
 JV5955
 JV5955                          STATION DESCRIPTION
 JV5955
 JV5955'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV5955'THE STATION IS LOCATED BETWEEN U.S. HIGHWAY 29 AND OLD COLUMBIA ROAD,
 JV5955'5 MILES SOUTHWEST OF LAUREL, 4 MILES NORTHWEST OF BELTSVILLE AND 2
 JV5955'MILES SOUTH OF BURTONSVILLE.
 JV5955'
 JV5955'TO REACH THE STATION FROM THE CROSSROAD AT TRAFFIC LIGHT, AT THE
 JV5955'JUNCTION OF U.S. HIGHWAY 29 AND STATE HIGHWAY 198.  GO SOUTH ON
 JV5955'U.S. HIGHWAY 29 FOR 2.25 MILES TO A CROSSROAD.  TURN RIGHT ON
 JV5955'BRIGGS CHENEY ROAD AND GO WEST FOR 0.2 MILE TO A T-ROAD.  TURN LEFT
 JV5955'ON OLD COLUMBIA ROAD AND GO SOUTH FOR 0.1 MILE TO A ROAD LEFT.
 JV5955'TURN LEFT ON HALLS LANE AND GO EAST FOR 0.1 MILE TO WHERE THE ROAD
 JV5955'TURNS RIGHT.  CONTINUE STRAIGHT AHEAD INTO DRIVEWAY AND PASS
 JV5955'THROUGH YARD, TO THE NORTH OF A HOUSE, FOR ABOUT 150 FEET TO THE
 JV5955'BACK OF THE HOUSE AND THE STATION.
 JV5955'
 JV5955'THE STATION IS A STANDARD DISK STAMPED EDWARDS 1963, SET IN THE TOP
 JV5955'OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH IS SET FLUSH WITH THE
 JV5955'GROUND SURFACE.  IT IS 94 FEET EAST OF THE NORTHEAST CORNER OF A
 JV5955'HOUSE AND 39 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A SMALL SHED.
 JV5955'
 JV5955'REFERENCE MARK 2 IS A STANDARD DISK STAMPED EDWARDS NO 2 1963, SET IN
 JV5955'THE TOP OF A 12-INCH CONCRETE MONUMENT WHICH IS SET FLUSH WITH THE
 JV5955'GROUND SURFACE.  IT IS 55 FEET NORTHWEST OF THE NORTHWEST CORNER OF
 JV5955'A SMALL SHED, 35 FEET SOUTH OF THE SOUTHEAST CORNER OF A GARAGE AND
 JV5955'21 FEET NORTHEAST OF THE NORTHEAST CORNER OF A HOUSE.
 JV5955'
 JV5955'REFERENCE MARK 3 IS A STANDARD DISK STAMPED EDWARDS NO 3 1966, SET IN
 JV5955'THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT WHICH IS SET
 JV5955'FLUSH WITH THE GROUND SURFACE.  IT IS 96 FEET SOUTHEAST OF THE
 JV5955'NORTHEAST CORNER OF A HOUSE, 92 FEET SOUTH OF THE SOUTHEAST
 JV5955'CORNER OF A SMALL SHED AND 17 FEET NORTHEAST OF AND 18-INCH OAK
 JV5955'TREE.
 JV5955'
 JV5955'NOTE--STATION NASA WAS USED AS THE AZIMUTH MARK FOR THIS STATION.
 JV5955'SEE DESCRIPTION THEREOF.
 JV5955
 JV5955                          STATION RECOVERY (1970)
 JV5955
 JV5955'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5955'THE STATION MARK AND REFERENCE MARKS 2 AND 3 WERE RECOVERED IN
 JV5955'GOOD CONDITION AS DESCRIBED BY L.G. BURDINE IN 1966.  TRIANGULATION
 JV5955'STATION NASA 1966 IS NO LONGER VISIBLE FROM THE
 JV5955'GROUND.  TRIANGULATION STATION CASTLE WILL SERVE AS AN AZIMUTH
 JV5955'MARK.
 JV5955'
 JV5955'A GEODIMETER TRAVERSE TIE WAS MADE TO TRIANGULATION STATION CASTLE
 JV5955'THE DISTANCE BEING 886.110 METERS NORTHEAST.
 JV5955'
 JV5955'RM 3 TO RM 2 OBSTRUCTED.
 JV5955'
 JV5955'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5955'2 MILES SOUTH OF BURTONSVILLE.
 JV5955
 JV5955                          STATION RECOVERY (2015)
 JV5955
 JV5955'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2015 (JRO)
 JV5955'I KNOCKED ON THE FRONT DOOR OF THE HOUSE ON THREE DIFFERENT OCCASIONS
 JV5955'BUT NO ONE ANSWERED.  SEEMS LIKE ALL MARKS SHOULD STILL BE THERE IN
 JV5955'GOOD SHAPE - BACK YARD WHERE THEY WERE LOOKS PRETTY UNDISTURBED.  I
 JV5955'CHOSE NOT TO LEAVE A NOTE IN THE MAILBOX REQUESTING ACCESS BUT A
 JV5955'PERSON COULD DO THAT.
 JV5955'
 JV5955'TO REACH THE HOUSE FROM THE INTERSECTION OF BRIGGS CHANEY ROAD AND OLD
 JV5955'COLUMBIA PIKE, PROCEED 0.15 MI (0.2 KM) SOUTHERLY ON OLD COLUMBIA PIKE
 JV5955'AND TURN LEFT ON NALL LANE, THEN PROCEED 0.1 MI (0.2 KM) TO THE HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0649 ***********************************************************************
 HV0649  DESIGNATION -  EDWARDS RM 1
 HV0649  PID         -  HV0649
 HV0649  STATE/COUNTY-  MD/ST MARYS
 HV0649  COUNTRY     -  US
 HV0649  USGS QUAD   -  LEONARDTOWN (2016)
 HV0649
 HV0649                         *CURRENT SURVEY CONTROL
 HV0649  ______________________________________________________________________
 HV0649* NAD 83(1986) POSITION- 38 22 28.39   (N) 076 44 35.60   (W)   HD_HELD1
 HV0649* NAVD 88 ORTHO HEIGHT -    42.573 (meters)      139.67  (feet) ADJUSTED
 HV0649  ______________________________________________________________________
 HV0649  GEOID HEIGHT    -        -33.712 (meters)                     GEOID18
 HV0649  DYNAMIC HEIGHT  -         42.547 (meters)      139.59  (feet) COMP
 HV0649  MODELED GRAVITY -    980,021.3   (mgal)                       NAVD 88
 HV0649
 HV0649  VERT ORDER      -  SECOND    CLASS 0
 HV0649
 HV0649.The horizontal coordinates were determined by differentially corrected
 HV0649.hand held GPS observations or other comparable positioning techniques
 HV0649.and have an estimated accuracy of +/- 3 meters.
 HV0649
 HV0649.The orthometric height was determined by differential leveling and
 HV0649.adjusted by the NATIONAL GEODETIC SURVEY
 HV0649.in June 1991.
 HV0649
 HV0649.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0649.GEOID18 height accuracy estimate available here.
 HV0649
 HV0649.Click photographs - Photos may exist for this station.
 HV0649
 HV0649.The dynamic height is computed by dividing the NAVD 88
 HV0649.geopotential number by the normal gravity value computed on the
 HV0649.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0649.degrees latitude (g = 980.6199 gals.).
 HV0649
 HV0649.The modeled gravity was interpolated from observed gravity values.
 HV0649
 HV0649;                    North         East    Units  Estimated Accuracy
 HV0649;SPC MD       -    78,609.9     422,437.9     MT  (+/- 3 meters HH1 GPS) 
 HV0649
 HV0649_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4772648812(NAD 83)
 HV0649
 HV0649                          SUPERSEDED SURVEY CONTROL
 HV0649
 HV0649  NGVD 29 (11/26/84)   42.839  (m)          140.55   (f) ADJUSTED    2 0
 HV0649
 HV0649.Superseded values are not recommended for survey control.
 HV0649
 HV0649.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0649.See file dsdata.pdf to determine how the superseded data were derived.
 HV0649
 HV0649_MARKER: DR = REFERENCE MARK DISK
 HV0649_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0649_STAMPING: EDWARDS NO 1 1942
 HV0649_MARK LOGO: CGS
 HV0649_PROJECTION: PROJECTING 15 CENTIMETERS
 HV0649_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0649+STABILITY: SURFACE MOTION
 HV0649
 HV0649  HISTORY     - Date     Condition        Report By
 HV0649  HISTORY     - 1942     MONUMENTED       CGS
 HV0649
 HV0649                          STATION DESCRIPTION
 HV0649
 HV0649'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0649'2.4 MI E FROM CHAPTICO.
 HV0649'A STANDARD REFERENCE MARK DISK SET IN A CONCRETE MONUMENT, STAMPED
 HV0649'EDWARDS 1, 1942 - 18 FEET SOUTH OF CENTER LINE OF STATE HIGHWAY
 HV0649'NO. 234, 1 FOOT NORTH OF FENCE LINE, 47.6 FEET EAST OF HIGHWAY
 HV0649'MARKER 7/3.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0651 ***********************************************************************
 HV0651  DESIGNATION -  EDWARDS RM 2
 HV0651  PID         -  HV0651
 HV0651  STATE/COUNTY-  MD/ST MARYS
 HV0651  COUNTRY     -  US
 HV0651  USGS QUAD   -  LEONARDTOWN (2016)
 HV0651
 HV0651                         *CURRENT SURVEY CONTROL
 HV0651  ______________________________________________________________________
 HV0651* NAD 83(1986) POSITION- 38 22 28.03   (N) 076 44 37.76   (W)   HD_HELD1
 HV0651* NAVD 88 ORTHO HEIGHT -    42.017 (meters)      137.85  (feet) ADJUSTED
 HV0651  ______________________________________________________________________
 HV0651  GEOID HEIGHT    -        -33.711 (meters)                     GEOID18
 HV0651  DYNAMIC HEIGHT  -         41.991 (meters)      137.77  (feet) COMP
 HV0651  MODELED GRAVITY -    980,021.3   (mgal)                       NAVD 88
 HV0651
 HV0651  VERT ORDER      -  SECOND    CLASS 0
 HV0651
 HV0651.The horizontal coordinates were determined by differentially corrected
 HV0651.hand held GPS observations or other comparable positioning techniques
 HV0651.and have an estimated accuracy of +/- 3 meters.
 HV0651
 HV0651.The orthometric height was determined by differential leveling and
 HV0651.adjusted by the NATIONAL GEODETIC SURVEY
 HV0651.in June 1991.
 HV0651
 HV0651.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0651.GEOID18 height accuracy estimate available here.
 HV0651
 HV0651.Click photographs - Photos may exist for this station.
 HV0651
 HV0651.The dynamic height is computed by dividing the NAVD 88
 HV0651.geopotential number by the normal gravity value computed on the
 HV0651.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0651.degrees latitude (g = 980.6199 gals.).
 HV0651
 HV0651.The modeled gravity was interpolated from observed gravity values.
 HV0651
 HV0651;                    North         East    Units  Estimated Accuracy
 HV0651;SPC MD       -    78,598.7     422,385.5     MT  (+/- 3 meters HH1 GPS) 
 HV0651
 HV0651_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4767348801(NAD 83)
 HV0651
 HV0651                          SUPERSEDED SURVEY CONTROL
 HV0651
 HV0651  NGVD 29 (11/26/84)   42.282  (m)          138.72   (f) ADJUSTED    2 0
 HV0651
 HV0651.Superseded values are not recommended for survey control.
 HV0651
 HV0651.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0651.See file dsdata.pdf to determine how the superseded data were derived.
 HV0651
 HV0651_MARKER: DR = REFERENCE MARK DISK
 HV0651_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0651_STAMPING: EDWARDS NO 2 1942
 HV0651_MARK LOGO: CGS
 HV0651_PROJECTION: PROJECTING 15 CENTIMETERS
 HV0651_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0651+STABILITY: SURFACE MOTION
 HV0651
 HV0651  HISTORY     - Date     Condition        Report By
 HV0651  HISTORY     - 1942     MONUMENTED       CGS
 HV0651
 HV0651                          STATION DESCRIPTION
 HV0651
 HV0651'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0651'2.4 MI E FROM CHAPTICO.
 HV0651'A STANDARD REFERENCE MARK DISK SET IN A CONCRETE MONUMENT, STAMPED
 HV0651'EDWARDS 2, 1942 - 23 FEET SOUTH OF CENTER LINE OF HIGHWAY NO.
 HV0651'234, 1 FOOT NORTH OF FENCE LINE, 65.6 FEET EAST OF POWER POLE,
 HV0651'49 FEET EAST OF ANDREW BURROUGHS DRIVEWAY, 7 FEET EAST OF FENCE
 HV0651'CORNER POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0730 ***********************************************************************
 JV0730  DESIGNATION -  EE 44
 JV0730  PID         -  JV0730
 JV0730  STATE/COUNTY-  MD/HOWARD
 JV0730  COUNTRY     -  US
 JV0730  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0730
 JV0730                         *CURRENT SURVEY CONTROL
 JV0730  ______________________________________________________________________
 JV0730* NAD 83(1986) POSITION- 39 17 40.4    (N) 076 46 54.1    (W)   HD_HELD2
 JV0730* NAVD 88 ORTHO HEIGHT -    57.891 (meters)      189.93  (feet) ADJUSTED
 JV0730  ______________________________________________________________________
 JV0730  GEOID HEIGHT    -        -32.232 (meters)                     GEOID18
 JV0730  DYNAMIC HEIGHT  -         57.861 (meters)      189.83  (feet) COMP
 JV0730  MODELED GRAVITY -    980,113.1   (mgal)                       NAVD 88
 JV0730
 JV0730  VERT ORDER      -  FIRST     CLASS II
 JV0730
 JV0730.The horizontal coordinates were established by autonomous hand held GPS
 JV0730.observations and have an estimated accuracy of +/- 10 meters.
 JV0730
 JV0730.The orthometric height was determined by differential leveling and
 JV0730.adjusted by the NATIONAL GEODETIC SURVEY
 JV0730.in June 1991.
 JV0730
 JV0730.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0730.GEOID18 height accuracy estimate available here.
 JV0730
 JV0730.Click photographs - Photos may exist for this station.
 JV0730
 JV0730.The dynamic height is computed by dividing the NAVD 88
 JV0730.geopotential number by the normal gravity value computed on the
 JV0730.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0730.degrees latitude (g = 980.6199 gals.).
 JV0730
 JV0730.The modeled gravity was interpolated from observed gravity values.
 JV0730
 JV0730;                    North         East    Units  Estimated Accuracy
 JV0730;SPC MD       -   180,729.      418,832.      MT  (+/- 10 meters HH2 GPS)
 JV0730
 JV0730_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4635650977(NAD 83)
 JV0730
 JV0730                          SUPERSEDED SURVEY CONTROL
 JV0730
 JV0730  NGVD 29 (11/26/84)   58.111  (m)          190.65   (f) ADJUSTED    1 2
 JV0730
 JV0730.Superseded values are not recommended for survey control.
 JV0730
 JV0730.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0730.See file dsdata.pdf to determine how the superseded data were derived.
 JV0730
 JV0730_MARKER: DB = BENCH MARK DISK
 JV0730_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0730_SP_SET: TUNNEL WALL
 JV0730_STAMPING: EE 44 1941
 JV0730_MARK LOGO: CGS
 JV0730_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0730
 JV0730  HISTORY     - Date     Condition        Report By
 JV0730  HISTORY     - 1941     MONUMENTED       CGS
 JV0730
 JV0730                          STATION DESCRIPTION
 JV0730
 JV0730'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0730'2.1 MI N FROM ELLICOTT CITY.
 JV0730'ABOUT 2.1 MILES NORTH ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV0730'ELLICOTT CITY, HOWARD COUNTY, IN THE EAST WALL OF THE UNION DAM
 JV0730'TUNNEL, 2.4 FEET NORTH OF THE SOUTH END, 6.0 FEET EAST OF THE
 JV0730'EAST RAIL, AND ABOUT 3.0 FEET HIGHER THAN THE TOP OF THE RAIL.
 JV0730'A STANDARD DISK, STAMPED EE 44 1941 AND SET VERTICALLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7062 ***********************************************************************
 HV7062  DESIGNATION -  EEDLING
 HV7062  PID         -  HV7062
 HV7062  STATE/COUNTY-  MD/CHARLES
 HV7062  COUNTRY     -  US
 HV7062  USGS QUAD   -  ROCK POINT (2016)
 HV7062
 HV7062                         *CURRENT SURVEY CONTROL
 HV7062  ______________________________________________________________________
 HV7062* NAD 83(1993) POSITION- 38 19 20.07990(N) 076 51 24.99633(W)   ADJUSTED
 HV7062* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7062  ______________________________________________________________________
 HV7062  GEOID HEIGHT    -        -33.658 (meters)                     GEOID18
 HV7062  LAPLACE CORR    -         -1.75  (seconds)                    DEFLEC18
 HV7062  HORZ ORDER      -  THIRD
 HV7062
 HV7062.The horizontal coordinates were established by classical geodetic methods
 HV7062.and adjusted by the National Geodetic Survey in November 1994.
 HV7062
 HV7062.The orthometric height was scaled from a topographic map.
 HV7062
 HV7062.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7062.GEOID18 height accuracy estimate available here.
 HV7062
 HV7062.Click photographs - Photos may exist for this station.
 HV7062
 HV7062.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7062
 HV7062. The following values were computed from the NAD 83(1993) position.
 HV7062
 HV7062;                    North         East     Units Scale Factor Converg.
 HV7062;SPC MD       -    72,781.835   412,509.777   MT  0.99999620   +0 05 23.2
 HV7062;SPC MD       -   238,785.07  1,353,375.83   sFT  0.99999620   +0 05 23.2
 HV7062;SPC VA N     - 2,074,053.346 3,643,666.736   MT  0.99996159   +1 01 31.7
 HV7062;SPC VA N     - 6,804,623.35 11,954,263.28   sFT  0.99996159   +1 01 31.7
 HV7062;UTM  18      - 4,243,201.119   337,674.689   MT  0.99992451   -1 09 06.2
 HV7062
 HV7062!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7062!SPC MD       -   1.00000517  x   0.99999620  =   1.00000137
 HV7062!SPC VA N     -   1.00000517  x   0.99996159  =   0.99996676
 HV7062!UTM  18      -   1.00000517  x   0.99992451  =   0.99992968
 HV7062
 HV7062:                Primary Azimuth Mark                     Grid Az
 HV7062:SPC MD       -  BOWMAN 1908                              319 23 33.0
 HV7062:SPC VA N     -  BOWMAN 1908                              318 27 24.5
 HV7062:UTM  18      -  BOWMAN 1908                              320 38 02.4
 HV7062
 HV7062_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3767443201(NAD 83)
 HV7062
 HV7062|---------------------------------------------------------------------|
 HV7062| PID    Reference Object                     Distance      Geod. Az  |
 HV7062|                                                           dddmmss.s |
 HV7062| CX2741 EEDLING RM                           23.990 METERS 09003     |
 HV7062| HV7059 BOWMAN 1908                         APPROX. 1.6 KM 3192856.2 |
 HV7062|---------------------------------------------------------------------|
 HV7062
 HV7062                          SUPERSEDED SURVEY CONTROL
 HV7062
 HV7062  NAD 83(1991)-  38 19 20.07948(N)    076 51 25.00102(W) AD(       ) 3
 HV7062  NAD 83(1986)-  38 19 20.07985(N)    076 51 25.01207(W) AD(       ) 3
 HV7062  NAD 27      -  38 19 19.57500(N)    076 51 26.08100(W) AD(       ) 3
 HV7062  USSD        -  38 19 20.29500(N)    076 51 26.19200(W) AD(       ) 3
 HV7062
 HV7062.Superseded values are not recommended for survey control.
 HV7062
 HV7062.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7062.See file dsdata.pdf to determine how the superseded data were derived.
 HV7062
 HV7062_MARKER: H = DRILL HOLE
 HV7062_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7062
 HV7062  HISTORY     - Date     Condition        Report By
 HV7062  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7062  HISTORY     - 1960     SEE DESCRIPTION  CGS
 HV7062  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7062  HISTORY     - 1974     GOOD             MDDNR
 HV7062
 HV7062                          STATION DESCRIPTION
 HV7062
 HV7062'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7062'ON THE WESTERN SHORE OF WICOMICO RIVER, ABOUT 1-1/4 MILES SW OF
 HV7062'MILLS POINT, AND ABOUT 1 MILE SE OF MOUTH OF BOWMANS CREEK, IN A
 HV7062'SHELL-COVERED CULTIVATED FIELD, ABOUT 10 FEET ABOVE HIGH WATER, 37
 HV7062'YARDS SW OF SHELL AND GRAVEL BEACH, 88 YARDS WNW OF EXTREME END OF
 HV7062'POINT, AND 79 YARDS N OF DITCH IN MARSH.  STATION MARK IS CENTER
 HV7062'OF STANDARD MONUMENT OF MARYLAND SHELL FISH SURVEY, WHICH IS MADE
 HV7062'OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE AT THE TOP AND
 HV7062'BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND SHOWS A CENTER
 HV7062'HOLE SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK LETTERS M.S.F.C.
 HV7062'ARRANGED AROUND THE VERTEX, AND THE LETTERS U.S.C.S. UNDERNEATH THE
 HV7062'BASE OF THE TRIANGLE.  THE CENTER HOLE IS ALWAYS AT THE CENTER OF
 HV7062'THE MONUMENT AND IF THE MARKING HAS BEEN BROKEN OFF WITHOUT
 HV7062'DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE
 HV7062'USED AS THE LOCATION OF THE STATION. THE MONUMENT IS SET
 HV7062'VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5 INCHES
 HV7062'ABOVE THE SURFACE. REFERENCE MARK IS SIMILAR TO STATION MARK AND
 HV7062'IS 23.99 METERS (78.7 FEET) FROM STATION S 89 DEG 57 MIN E.
 HV7062'DISTANCES AND BEARINGS OF OTHER POINTS OF REFERENCE ARE AS
 HV7062'FOLLOWS--NEAR PEAK OF ROOF OF EEDLING HOUSE, 3/8 MILE, N 54 DEG 51
 HV7062'MIN W.  NAIL IN BLAZE IN 24-INCH OAK TREE, 33.99 METERS (111.5
 HV7062'FEET), N 10 DEG 42 MIN E.  NAIL IN BLAZE IN 20-INCH GUM TREE,
 HV7062'26.06 METERS (85.5 FEET), N 41 DEG 22 MIN E. NEAR PEAK OF ROOF OF
 HV7062'HOUSE ON CHAPTICO WHARF, 1-3/8 MILES, N 81 DEG 19 MIN E.  CHIMNEY
 HV7062'OUTSIDE NEAR END OF HOUSE ON HILL, 2-5/8 MILES, N 83 DEG 38 MIN E.
 HV7062'NAIL IN BLAZE IN 3-INCH CEDAR TREE, 25.75 METERS (84.5 FEET), N 89
 HV7062'DEG 9 MIN E.  CHIMNEY ON RIGHT OF ELL OF A HOUSE, 2 MILES, S 80
 HV7062'DEG 34 MIN E.
 HV7062
 HV7062                          STATION RECOVERY (1960)
 HV7062
 HV7062'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (WER)
 HV7062'A CONCRETE MONUMENT AS DESCRIBED IN THE 1908 DESCRIPTION WAS
 HV7062'RECOVERED IN GOOD CONDITION.  POSITIONS OF GROUND FEATURES
 HV7062'ARRIVED AT BY A PHOTOGRAMMETRIC RADIAL PLOT LEAD TO THE CONCLUSION
 HV7062'THIS MONUMENT IS THE REFERENCE MARK AND NOT THE STATION MARK.  THE
 HV7062'ORIGINAL DESCRIPTION STATES REFERENCE MARK IS SIMILAR TO STATION
 HV7062'MARK.  NONE OF THE ORIGINAL REFERENCE POINTS COULD BE FOUND ON THE
 HV7062'GROUND.  PLOTTING THESE REFERENCE POINTS AND THOSE MENTIONED IN
 HV7062'THE 1942 RECOVERY NOTE CONFIRMS THAT THE MARK FOUND IS THE REFERENCE
 HV7062'MARK AND, ALSO, THAT THE 1942 RECOVERY WAS PROBABLY OF THE
 HV7062'REFERENCE MARK AND NOT THE STATION.
 HV7062'
 HV7062'IN EITHER CASE THE ORIGINAL DESCRIPTION AND THE 1942 RECOVERY NOTE
 HV7062'ARE INADEQUATE--
 HV7062'
 HV7062'A NEW DESCRIPTION FOLLOWS--
 HV7062'
 HV7062'THE REFERENCE MARK (OR STATION) IS LOCATED ON THE WESTERN SHORE OF
 HV7062'WICOMICO RIVER, ABOUT 1-1/4 MILES SW OF MILLS POINT AND ABOUT 1
 HV7062'MILE SE OF BOWMANS CREEK.  IT IS ON THE NORTH CORNER OF THE FRONT
 HV7062'LAWN OF MR. BARBERS FARM HOUSE ON THE EDGE OF A 10 FOOT BLUFF
 HV7062'ABOUT 10 YARDS FROM THE HIGH WATER LINE OF THE WICOMICO RIVER, 157
 HV7062'FEET SE OF A 36 INCH OAK ON THE EDGE OF THE BLUFF, 150 FEET ENE OF
 HV7062'THE FENCE CORNER AT THE T ROAD JUNCTION JUST NORTH OF THE FARM
 HV7062'HOUSE, AND 70.8 FEET NW OF THE WALKWAY FROM THE HOUSE AT THE POINT
 HV7062'WHERE THE WALK JOINS THE STEPS DOWN THE BLUFF TO THE PIER.
 HV7062'
 HV7062'THE REFERENCE MARK (OR STATION) IS MARKED BY A CONCRETE MONUMENT 8
 HV7062'INCHES SQUARE AT THE TOP.  THERE IS A CENTER HOLE SURROUNDED BY A
 HV7062'TRIANGLE WITH COUNTER-SUNK LETTERS MSFC ARRANGED AROUND THE
 HV7062'VERTEX, AND THE LETTERS USCS UNDERNEATH THE BASE OF THE TRIANGLE.
 HV7062'THE MARK PROJECTS ABOUT 4 INCHES ABOVE THE LAWN.
 HV7062'
 HV7062'TO REACH FROM JUNCTION OF U.S. ROUTE 301 AND MD STATE HWY 257
 HV7062'WHICH IS ABOUT 2 MILES NORTHEAST OF THE POTOMAC RIVER TOLL
 HV7062'BRIDGE, GO EAST ON STATE HWY 257 FOR 6.2 MILES TO SIMMS STORE IN
 HV7062'TOMPKINSVILLE, TURN LEFT 0.1 MILE TO WHERE THE ROAD FORKS, KEEP
 HV7062'RIGHT FORK 2.5 MILES TO WICOMICO BEACH, TURN RIGHT AT T JUNCTION
 HV7062'FOR 0.5 MILES TO LANE TO MR. BARBERS HOUSE, TURN LEFT FOR 0.13
 HV7062'MILES TO FARM HOUSE AND STATION.
 HV7062
 HV7062                          STATION RECOVERY (1960)
 HV7062
 HV7062'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV7062'STATION HAS BEEN DESTROYED BY EROSION OF THE SHORE.  THE REFERENCE
 HV7062'MARK IS IN GOOD CONDITION AND MARKED IN THE SAME MANNER AS THE
 HV7062'STATION ITSELF.
 HV7062'
 HV7062'THE REFERENCE MARK IS LOCATED ON THE LAWN IN FRONT OF MR. K.W.
 HV7062'BARBERS HOME, 76.8 FEET NW OF NW CORNER OF HOUSE, 73.0 FEET N OF
 HV7062'THE CONCRETE WALKWAY TO PIER AND 5.2 FEET W OF AN 8 INCH CEDAR TREE.
 HV7062
 HV7062                          STATION RECOVERY (1974)
 HV7062
 HV7062'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 HV7062'MSFC-USCS GOOD
 HV7062'
 HV7062'RECOVD AS DESCRIBED WITH CORRECTION PROP. OWNER IS GILBERT W.
 HV7062'BARBER NOT K.W. BARBER
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6483 ***********************************************************************
 HV6483  DESIGNATION -  EGG
 HV6483  PID         -  HV6483
 HV6483  STATE/COUNTY-  MD/SOMERSET
 HV6483  COUNTRY     -  US
 HV6483  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6483
 HV6483                         *CURRENT SURVEY CONTROL
 HV6483  ______________________________________________________________________
 HV6483* NAD 83(1993) POSITION- 38 08 28.98974(N) 076 00 32.28090(W)   ADJUSTED
 HV6483* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6483  ______________________________________________________________________
 HV6483  GEOID HEIGHT    -        -35.751 (meters)                     GEOID18
 HV6483  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 HV6483  HORZ ORDER      -  THIRD
 HV6483
 HV6483.The horizontal coordinates were established by classical geodetic methods
 HV6483.and adjusted by the National Geodetic Survey in November 1994.
 HV6483
 HV6483.The orthometric height was scaled from a topographic map.
 HV6483
 HV6483.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6483.GEOID18 height accuracy estimate available here.
 HV6483
 HV6483.Click photographs - Photos may exist for this station.
 HV6483
 HV6483.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6483
 HV6483. The following values were computed from the NAD 83(1993) position.
 HV6483
 HV6483;                    North         East     Units Scale Factor Converg.
 HV6483;SPC MD       -    53,167.919   486,878.510   MT  1.00003138   +0 37 19.2
 HV6483;SPC MD       -   174,435.08  1,597,367.24   sFT  1.00003138   +0 37 19.2
 HV6483;UTM  18      - 4,221,983.109   411,584.650   MT  0.99969628   -0 37 23.5
 HV6483
 HV6483!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6483!SPC MD       -   1.00000565  x   1.00003138  =   1.00003703
 HV6483!UTM  18      -   1.00000565  x   0.99969628  =   0.99970193
 HV6483
 HV6483:                Primary Azimuth Mark                     Grid Az
 HV6483:SPC MD       -  HAINES                                   051 20 58.7
 HV6483:UTM  18      -  HAINES                                   052 35 41.4
 HV6483
 HV6483_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1158421983(NAD 83)
 HV6483
 HV6483|---------------------------------------------------------------------|
 HV6483| PID    Reference Object                     Distance      Geod. Az  |
 HV6483|                                                           dddmmss.s |
 HV6483| HU1893 HAINES                              APPROX. 6.3 KM 0515817.9 |
 HV6483| HU1890 DEAL ISLAND CHURCH SPIRE            APPROX. 5.5 KM 0735228.1 |
 HV6483| HV6463 PEARL                               APPROX. 4.3 KM 3443431.9 |
 HV6483|---------------------------------------------------------------------|
 HV6483
 HV6483                          SUPERSEDED SURVEY CONTROL
 HV6483
 HV6483  NAD 83(1991)-  38 08 28.98950(N)    076 00 32.28119(W) AD(       ) 3
 HV6483  NAD 83(1986)-  38 08 28.98974(N)    076 00 32.30033(W) AD(       ) 3
 HV6483  NAD 27      -  38 08 28.55200(N)    076 00 33.51300(W) AD(       ) 3
 HV6483  USSD        -  38 08 28.92300(N)    076 00 33.27300(W) AD(       ) 3
 HV6483
 HV6483.Superseded values are not recommended for survey control.
 HV6483
 HV6483.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6483.See file dsdata.pdf to determine how the superseded data were derived.
 HV6483
 HV6483_MARKER: N = NAIL
 HV6483_SETTING: 0 = UNSPECIFIED SETTING
 HV6483_MARK LOGO: CGS
 HV6483_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6483
 HV6483  HISTORY     - Date     Condition        Report By
 HV6483  HISTORY     - 1901     MONUMENTED       CGS
 HV6483  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6483
 HV6483                          STATION DESCRIPTION
 HV6483
 HV6483'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (WIV)
 HV6483'STATION IS ON THE W SIDE OF TANGIER SOUND, ABOUT 1/2 MILE N OF NE
 HV6483'POINT OF S MARSH, IN ABOUT THE CENTER OF A SMALL ISLAND KNOWN AS
 HV6483'TURTLE EGG ISLAND.  IT IS MARKED BY NAIL IN PINE STAKE INSIDE A
 HV6483'4-INCH TILE PIPE 2 FEET LONG, SET IN CEMENT, FLANGE END DOWN.
 HV6483
 HV6483                          STATION RECOVERY (1942)
 HV6483
 HV6483'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6483'THE SMALL ISLAND KNOWN AS TURTLE EGG ISLAND IS NOW ALL COVERED
 HV6483'WITH WATER EXCEPT FOR ONE SMALL SPOT ABOUT 4 SQUARE METERS IN
 HV6483'AREA.  THIS AREA AS WELL AS THE PART UNDER WATER WHICH COULD BE
 HV6483'REACHED, WAS SEARCHED THOROUGHLY, BUT THE MARK COULD NOT BE FOUND.
 HV6483'
 HV6483'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3961 ***********************************************************************
 JU3961  DESIGNATION -  EGG
 JU3961  PID         -  JU3961
 JU3961  STATE/COUNTY-  MD/CECIL
 JU3961  COUNTRY     -  US
 JU3961  USGS QUAD   -  BAY VIEW (2016)
 JU3961
 JU3961                         *CURRENT SURVEY CONTROL
 JU3961  ______________________________________________________________________
 JU3961* NAD 83(1991) POSITION- 39 39 34.68299(N) 075 53 56.58206(W)   ADJUSTED
 JU3961* NAVD 88 ORTHO HEIGHT -   125.    (meters)      410.    (feet) SCALED
 JU3961  ______________________________________________________________________
 JU3961  GEOID HEIGHT    -        -33.069 (meters)                     GEOID18
 JU3961  LAPLACE CORR    -         -0.56  (seconds)                    DEFLEC18
 JU3961  HORZ ORDER      -  SECOND
 JU3961
 JU3961.The horizontal coordinates were established by classical geodetic methods
 JU3961.and adjusted by the National Geodetic Survey in January 1992.
 JU3961
 JU3961.The orthometric height was scaled from a topographic map.
 JU3961
 JU3961.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3961.GEOID18 height accuracy estimate available here.
 JU3961
 JU3961.Click photographs - Photos may exist for this station.
 JU3961
 JU3961.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3961
 JU3961. The following values were computed from the NAD 83(1991) position.
 JU3961
 JU3961;                    North         East     Units Scale Factor Converg.
 JU3961;SPC MD       -   221,808.732   494,481.244   MT  1.00004340   +0 41 27.6
 JU3961;SPC MD       -   727,717.48  1,622,310.55   sFT  1.00004340   +0 41 27.6
 JU3961;SPC PA S     -    37,895.742   758,838.635   MT  1.00005406   +1 12 03.2
 JU3961;SPC PA S     -   124,329.61  2,489,623.09   sFT  1.00005406   +1 12 03.2
 JU3961;UTM  18      - 4,390,367.249   422,877.051   MT  0.99967323   -0 34 25.8
 JU3961
 JU3961!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3961!SPC MD       -   0.99998563  x   1.00004340  =   1.00002903
 JU3961!SPC PA S     -   0.99998563  x   1.00005406  =   1.00003969
 JU3961!UTM  18      -   0.99998563  x   0.99967323  =   0.99965886
 JU3961
 JU3961:                Primary Azimuth Mark                     Grid Az
 JU3961:SPC MD       -  PRINCIPIO ECC                            230 15 12.0
 JU3961:SPC PA S     -  PRINCIPIO ECC                            229 44 36.4
 JU3961:UTM  18      -  PRINCIPIO ECC                            231 31 05.4
 JU3961
 JU3961_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2287790367(NAD 83)
 JU3961
 JU3961|---------------------------------------------------------------------|
 JU3961| PID    Reference Object                     Distance      Geod. Az  |
 JU3961|                                                           dddmmss.s |
 JU3961| JU3963 PLEASANT HILL FIRE TOWER USGS        12.670 METERS 00340     |
 JU3961| JU3876 ELKTON THE ELKTON CO E TANK         APPROX. 6.0 KM 1370619.9 |
 JU3961| JU3865 ELKTON PLASTICOID WATER TANK        APPROX. 7.8 KM 1373411.5 |
 JU3961| JU3873 ELKTON MARTIN DWYER WATER TANK      APPROX. 6.5 KM 1380845.6 |
 JU3961| JU3871 ELKTON BRICK STACK                  APPROX. 8.3 KM 1381810.5 |
 JU3961| JU3874 ELKTON THE ELKTON CO W TANK         APPROX. 5.8 KM 1394056.6 |
 JU3961| JU3954 NORTH EAST MICROWAVE TOWER          APPROX.11.2 KM 1933528.2 |
 JU3961| JU3951 NORTH EAST MUNICIPAL TANK           APPROX. 7.5 KM 2082129.9 |
 JU3961| JV4792 PRINCIPIO ECC                       APPROX.11.6 KM 2305639.6 |
 JU3961| JU3948 NORTH EAST HARBISON WALKER TK       APPROX. 8.5 KM 2360948.8 |
 JU3961| CB1469 EGG AZ MK                                          2612106.3 |
 JU3961| CB1470 EGG RM 1                             26.442 METERS 27608     |
 JU3961| JU3957 CHROME ATT MICROWAVE RELAY TWR      APPROX.10.0 KM 3251919.1 |
 JU3961|---------------------------------------------------------------------|
 JU3961
 JU3961                          SUPERSEDED SURVEY CONTROL
 JU3961
 JU3961  NAD 83(1986)-  39 39 34.67702(N)    075 53 56.58851(W) AD(       ) 2
 JU3961  NAD 27      -  39 39 34.28450(N)    075 53 57.80220(W) AD(       ) 2
 JU3961
 JU3961.Superseded values are not recommended for survey control.
 JU3961
 JU3961.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3961.See file dsdata.pdf to determine how the superseded data were derived.
 JU3961
 JU3961_MARKER: DS = TRIANGULATION STATION DISK
 JU3961_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3961_STAMPING: EGG 1958
 JU3961_MARK LOGO: CGS
 JU3961_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3961+STABILITY: SURFACE MOTION
 JU3961_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3961+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2014
 JU3961
 JU3961  HISTORY     - Date     Condition        Report By
 JU3961  HISTORY     - 1958     MONUMENTED       CGS
 JU3961  HISTORY     - 20140321 GOOD             GEOCAC
 JU3961
 JU3961                          STATION DESCRIPTION
 JU3961
 JU3961'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3961'THE STATION IS ABOUT 5 MILES NORTHWEST OF ELKTON, ABOUT 4-1/2
 JU3961'MILES NORTHEAST OF NORTH EAST AND IS AT THE PLEASANT HILL FIRE
 JU3961'TOWER.  IT IS 31 FEET SOUTH OF THE SOUTHWEST CORNER OF THE FIRE
 JU3961'TOWER, 18 FEET WEST OF A THREE TRUNKED TREE AND IS 24 FEET NORTH
 JU3961'OF CENTER OF ROAD.  THE MARK IS A STANDARD TRIANGULATION STATION
 JU3961'MARK DISK SET IN TOP OF A 12 X 12 INCH CONCRETE POST, THE MARK IS
 JU3961'SET FLUSH WITH THE SURFACE OF THE GROUND AND THE DISK IS
 JU3961'STAMPED EGG 1958.
 JU3961'
 JU3961'R.M. NO. 1 IS 36 FEET SOUTHWEST OF UTILITY POLE, 81 FEET
 JU3961'WEST-SOUTHWEST OF THE SOUTHWEST CORNER OF FIRE TOWER AND 15 FEET
 JU3961'NORTH OF DRIVEWAY.  THE MARK IS A STANDARD REFERENCE MARK DISK
 JU3961'SET IN TOP OF A 12 X 12 INCH CONCRETE POST, SET FLUSH WITH THE
 JU3961'SURFACE OF THE GROUND AND THE DISK IS STAMPED EGG NO 1 1958.
 JU3961'
 JU3961'AZIMUTH MARK IS 53 FEET SOUTH OF TRACK ROAD, 9 FEET EAST OF
 JU3961'TRACK ROAD AND 1 FOOT EAST OF WITNESS POST.  THE MARK IS A
 JU3961'STANDARD AZIMUTH MARK DISK SET IN TOP OF A 12 X 12 INCH CONCRETE
 JU3961'POST, PROJECTING ABOUT 4 INCHES AND THE DISK IS STAMPED EGG 1958.
 JU3961'
 JU3961'USGS BENCH MARK IS SET UNDER THE FIRE TOWER AND IS IN THE
 JU3961'APPROXIMATE CENTER, THE MARK IS A 6 X 6 INCH CONCRETE POST WITH
 JU3961'A BRONZE DISK SET IN TOP AND THE DISK IS STAMPED PLEASANT HILL
 JU3961'FIRE TOWER 1938 412 FT.
 JU3961'
 JU3961'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JU3961'STATE HIGHWAY 272, ABOUT 1/4 MILE NORTH OF NORTH EAST).  GO EAST
 JU3961'ON STATE HIGHWAY 40 FOR 1.1 MILES TO CROSSROADS, TURN LEFT AND GO
 JU3961'NORTH ON SURFACED ROAD FOR 0.75 MILE OVER PASS AND FORKS, TAKE
 JU3961'THE RIGHT FORK AND GO NORTHEASTERLY FOR 0.85 MILE TO FORKS, KEEP
 JU3961'RIGHT FORK CROSSING BRIDGE AND GO FOR 0.2 MILE TO FORKS, TAKE
 JU3961'LEFT FORK AND GO NORTH FOR 1.0 MILE TO CROSSROADS, CONTINUE
 JU3961'NORTH FOR 1.0 MILE TO A TRACK ROAD RIGHT, TURN RIGHT AND FOLLOW
 JU3961'MAIN TRAVELED ROAD EASTERLY FOR 0.45 MILE TO FIRE TOWER AND
 JU3961'THE STATION AS DESCRIBED.
 JU3961'
 JU3961'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JU3961
 JU3961                          STATION RECOVERY (2014)
 JU3961
 JU3961'RECOVERY NOTE BY GEOCACHING 2014 (MFL)
 JU3961'THE STATION, REFERENCE MARK AND USGS MARK FOUND AS DESCRIBED.  THE
 JU3961'TOWER HAS BEEN REMOVED BUT THE FOUNDATIONS REMAIN.  THE STATION IS
 JU3961'1.7 FEET SOUTH OF A WITNESS POST. REFERENCE MARK 1 IS 4.9 FEET
 JU3961'SOUTHEAST OF A 3 FOOT HIGH STUMP, 13.7 FEET NORTHEAST OF A TRAIL AND
 JU3961'14 FEET SOUTH SOUTHEAST OF A TRAIL. THE TRAILS MEET NORTH OF THE
 JU3961'REFERENCE MARK.
 JU3961'
 JU3961'THE AZIMUTH MARK WAS NOT SEARCHED FOR.  ACCESS TO THE MARK CAN BE HAD
 JU3961'BY DRIVING UP LAZY GIRLS LANE TO THE END OF THE ROAD AND PACKING UP
 JU3961'A HILL TO THE MARK.  PERMISSION CAN BE GOTTEN AT WRIGHT'S AUTO
 JU3961'SALVAGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3171 ***********************************************************************
 DI3171  DESIGNATION -  EGYPT 1
 DI3171  PID         -  DI3171
 DI3171  STATE/COUNTY-  MD/DORCHESTER
 DI3171  COUNTRY     -  US
 DI3171  USGS QUAD   -  CAMBRIDGE (2016)
 DI3171
 DI3171                         *CURRENT SURVEY CONTROL
 DI3171  ______________________________________________________________________
 DI3171* NAD 83(2011) POSITION- 38 30 28.49586(N) 076 06 10.39528(W)   ADJUSTED
 DI3171* NAD 83(2011) ELLIP HT-   -33.855 (meters)        (06/27/12)   ADJUSTED
 DI3171* NAD 83(2011) EPOCH   -  2010.00
 DI3171* NAVD 88 ORTHO HEIGHT -     1.2   (meters)        4.    (feet) GPS OBS
 DI3171  ______________________________________________________________________
 DI3171  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3171  GEOID HEIGHT    -        -35.063 (meters)                     GEOID03
 DI3171  GEOID HEIGHT    -        -35.095 (meters)                     GEOID18
 DI3171  NAD 83(2011) X  -  1,200,294.148 (meters)                     COMP
 DI3171  NAD 83(2011) Y  - -4,851,212.051 (meters)                     COMP
 DI3171  NAD 83(2011) Z  -  3,949,695.932 (meters)                     COMP
 DI3171  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 DI3171
 DI3171  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3171  Standards:
 DI3171         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3171            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3171  -------------------------------------------------------------------
 DI3171  NETWORK    0.49   0.65           0.21   0.19   0.33      0.02172651
 DI3171  -------------------------------------------------------------------
 DI3171  Click here for local accuracies and other accuracy information.
 DI3171
 DI3171.The horizontal coordinates were established by GPS observations
 DI3171.and adjusted by the National Geodetic Survey in June 2012.
 DI3171
 DI3171.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3171.been affixed to the stable North American tectonic plate. See 
 DI3171.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3171
 DI3171.The horizontal coordinates are valid at the epoch date displayed above
 DI3171.which is a decimal equivalence of Year/Month/Day.
 DI3171
 DI3171.The orthometric height was determined by GPS observations and a
 DI3171.high-resolution geoid model.
 DI3171
 DI3171.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3171.GEOID18 height accuracy estimate available here.
 DI3171
 DI3171.Click photographs - Photos may exist for this station.
 DI3171
 DI3171.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3171
 DI3171.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3171
 DI3171.The ellipsoidal height was determined by GPS observations
 DI3171.and is referenced to NAD 83.
 DI3171
 DI3171. The following values were computed from the NAD 83(2011) position.
 DI3171
 DI3171;                    North         East     Units Scale Factor Converg.
 DI3171;SPC MD       -    93,766.440   478,245.453   MT  0.99997034   +0 33 47.0
 DI3171;SPC MD       -   307,632.06  1,569,043.62   sFT  0.99997034   +0 33 47.0
 DI3171;UTM  18      - 4,262,748.020   403,839.726   MT  0.99971387   -0 41 12.2
 DI3171
 DI3171!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3171!SPC MD       -   1.00000531  x   0.99997034  =   0.99997565
 DI3171!UTM  18      -   1.00000531  x   0.99971387  =   0.99971918
 DI3171
 DI3171:                Primary Azimuth Mark                     Grid Az
 DI3171:SPC MD       -  EGYPT 2                                  191 00 04.7
 DI3171:UTM  18      -  EGYPT 2                                  192 15 03.9
 DI3171
 DI3171_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0383962748(NAD 83)
 DI3171
 DI3171|---------------------------------------------------------------------|
 DI3171| PID    Reference Object                     Distance      Geod. Az  |
 DI3171|                                                           dddmmss.s |
 DI3171| DI3172 EGYPT 2                             401.869 METERS 1913351.7 |
 DI3171|---------------------------------------------------------------------|
 DI3171
 DI3171                          SUPERSEDED SURVEY CONTROL
 DI3171
 DI3171  NAD 83(1991)-  38 30 28.49616(N)    076 06 10.39618(W) AD(       ) 1
 DI3171  ELLIP H (01/05/07)  -33.830  (m)                       GP(       ) 4 2
 DI3171
 DI3171.Superseded values are not recommended for survey control.
 DI3171
 DI3171.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3171.See file dsdata.pdf to determine how the superseded data were derived.
 DI3171
 DI3171_MARKER: DD = SURVEY DISK
 DI3171_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3171_STAMPING: EGYPT 1
 DI3171_MARK LOGO: MD-019
 DI3171_PROJECTION: RECESSED 8 CENTIMETERS
 DI3171_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3171_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3171+STABILITY: SURFACE MOTION
 DI3171_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3171+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3171
 DI3171  HISTORY     - Date     Condition        Report By
 DI3171  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3171
 DI3171                          STATION DESCRIPTION
 DI3171
 DI3171'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3171'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR CAMBRIDGE,
 DI3171'MARYLAND.  IT IS  ABOUT 4.0 MI (6.4 KM) SOUTHWEST OF CAMBRIDGE,
 DI3171'MARYLAND, ABOUT 18.6 MI (29.9 KM) SOUTHWEST  OF EASTON, MARYLAND AND
 DI3171'ABOUT 29.1 MI (46.8 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3171'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3171'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHWEST ON US RTE 50 FOR 2.6 MI
 DI3171'(4.2 KM) TO INTERSECTION WITH SR  16 (CHURCH CREEK ROAD/ CAMBRIDGE
 DI3171'BYPASS).  TURN LEFT AND PROCEED 2.8 MI (4.5 KM)  SOUTHWEST TO
 DI3171'INTERSECTION WITH EGYPT ROAD.  TURN LEFT AND PROCEED SOUTH 2.7 MI
 DI3171'(4.3. KM)  TO THE STATION IN THE LEFT.              STATION IS 4.5 FT
 DI3171'(1.4 M) EAST OF THE EAST EDGE OF EGYPT ROAD,  10.0 FT (3.0 M) WEST OF
 DI3171'CULTIVATED FIELD AND 416.0 FT (126.8 M) NORTH OF CENTER LINE OF
 DI3171'DRIVEWAY TO HOUSE 34757.  A  3 IN BRASS DISK STAMPED EGYPT 1 SET IN
 DI3171'THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT  RECESSED 0.30 FT BELOW
 DI3171'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3172 ***********************************************************************
 DI3172  DESIGNATION -  EGYPT 2
 DI3172  PID         -  DI3172
 DI3172  STATE/COUNTY-  MD/DORCHESTER
 DI3172  COUNTRY     -  US
 DI3172  USGS QUAD   -  CAMBRIDGE (2016)
 DI3172
 DI3172                         *CURRENT SURVEY CONTROL
 DI3172  ______________________________________________________________________
 DI3172* NAD 83(2011) POSITION- 38 30 15.72754(N) 076 06 13.72019(W)   ADJUSTED
 DI3172* NAD 83(2011) ELLIP HT-   -33.397 (meters)        (06/27/12)   ADJUSTED
 DI3172* NAD 83(2011) EPOCH   -  2010.00
 DI3172* NAVD 88 ORTHO HEIGHT -     1.7   (meters)        6.    (feet) GPS OBS
 DI3172  ______________________________________________________________________
 DI3172  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3172  GEOID HEIGHT    -        -35.067 (meters)                     GEOID03
 DI3172  GEOID HEIGHT    -        -35.099 (meters)                     GEOID18
 DI3172  NAD 83(2011) X  -  1,200,274.904 (meters)                     COMP
 DI3172  NAD 83(2011) Y  - -4,851,469.695 (meters)                     COMP
 DI3172  NAD 83(2011) Z  -  3,949,388.123 (meters)                     COMP
 DI3172  LAPLACE CORR    -         -3.38  (seconds)                    DEFLEC18
 DI3172
 DI3172  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3172  Standards:
 DI3172         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3172            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3172  -------------------------------------------------------------------
 DI3172  NETWORK    0.49   0.65           0.21   0.19   0.33      0.02920588
 DI3172  -------------------------------------------------------------------
 DI3172  Click here for local accuracies and other accuracy information.
 DI3172
 DI3172.The horizontal coordinates were established by GPS observations
 DI3172.and adjusted by the National Geodetic Survey in June 2012.
 DI3172
 DI3172.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3172.been affixed to the stable North American tectonic plate. See 
 DI3172.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3172
 DI3172.The horizontal coordinates are valid at the epoch date displayed above
 DI3172.which is a decimal equivalence of Year/Month/Day.
 DI3172
 DI3172.The orthometric height was determined by GPS observations and a
 DI3172.high-resolution geoid model.
 DI3172
 DI3172.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3172.GEOID18 height accuracy estimate available here.
 DI3172
 DI3172.Click photographs - Photos may exist for this station.
 DI3172
 DI3172.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3172
 DI3172.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3172
 DI3172.The ellipsoidal height was determined by GPS observations
 DI3172.and is referenced to NAD 83.
 DI3172
 DI3172. The following values were computed from the NAD 83(2011) position.
 DI3172
 DI3172;                    North         East     Units Scale Factor Converg.
 DI3172;SPC MD       -    93,371.968   478,168.766   MT  0.99997074   +0 33 44.9
 DI3172;SPC MD       -   306,337.87  1,568,792.03   sFT  0.99997074   +0 33 44.9
 DI3172;UTM  18      - 4,262,355.415   403,754.475   MT  0.99971407   -0 41 14.1
 DI3172
 DI3172!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3172!SPC MD       -   1.00000524  x   0.99997074  =   0.99997598
 DI3172!UTM  18      -   1.00000524  x   0.99971407  =   0.99971931
 DI3172
 DI3172:                Primary Azimuth Mark                     Grid Az
 DI3172:SPC MD       -  EGYPT 1                                  011 00 04.7
 DI3172:UTM  18      -  EGYPT 1                                  012 15 03.7
 DI3172
 DI3172_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0375462355(NAD 83)
 DI3172
 DI3172|---------------------------------------------------------------------|
 DI3172| PID    Reference Object                     Distance      Geod. Az  |
 DI3172|                                                           dddmmss.s |
 DI3172| DI3171 EGYPT 1                             401.869 METERS 0113349.6 |
 DI3172|---------------------------------------------------------------------|
 DI3172
 DI3172                          SUPERSEDED SURVEY CONTROL
 DI3172
 DI3172  NAD 83(1991)-  38 30 15.72784(N)    076 06 13.72109(W) AD(       ) 1
 DI3172  ELLIP H (01/05/07)  -33.372  (m)                       GP(       ) 4 2
 DI3172
 DI3172.Superseded values are not recommended for survey control.
 DI3172
 DI3172.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3172.See file dsdata.pdf to determine how the superseded data were derived.
 DI3172
 DI3172_MARKER: DD = SURVEY DISK
 DI3172_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3172_STAMPING: EGYPT 2
 DI3172_MARK LOGO: MD-019
 DI3172_PROJECTION: RECESSED 5 CENTIMETERS
 DI3172_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3172_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3172+STABILITY: SURFACE MOTION
 DI3172_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3172+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3172
 DI3172  HISTORY     - Date     Condition        Report By
 DI3172  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3172
 DI3172                          STATION DESCRIPTION
 DI3172
 DI3172'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3172'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR CAMBRIDGE,
 DI3172'MARYLAND.  IT IS  ABOUT 4.3 MI (6.9 KM) SOUTHWEST OF CAMBRIDGE,
 DI3172'MARYLAND, ABOUT 18.8 MI (30.2 KM) SOUTHWEST  OF EASTON, MARYLAND AND
 DI3172'ABOUT 29.1 MI (46.8 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3172'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3172'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHWEST ON US RTE 50 FOR 2.6 MI
 DI3172'(4.2 KM) TO INTERSECTION WITH SR  16 (CHURCH CREEK ROAD/ CAMBRIDGE
 DI3172'BYPASS).  TURN LEFT AND PROCEED 2.8 MI (4.5 KM)  SOUTHWEST TO
 DI3172'INTERSECTION WITH EGYPT ROAD.  TURN LEFT AND PROCEED SOUTH 2.9 MI
 DI3172'(4.7. KM)  TO THE STATION IN THE LEFT.              STATION IS 5.0 FT
 DI3172'(1.5 M) EAST OF THE EAST EDGE OF EGYPT ROAD,  113.5 FT (34.6 M) NORTH
 DI3172'OF  UTILITY POLE 511-203-T52 AND 244.5 FT (74.5 M) SOUTHWEST OF
 DI3172'UTILITY POLE 30-148-T51.  A 3 IN  BRASS DISK STAMPED EGYPT 2 SET IN
 DI3172'THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT RECESSED  0.20 FT BELOW
 DI3172'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6121 ***********************************************************************
 JV6121  DESIGNATION -  EKLO MIDDLETN GUNPOWDER BAP CH
 JV6121  PID         -  JV6121
 JV6121  STATE/COUNTY-  MD/BALTIMORE
 JV6121  COUNTRY     -  US
 JV6121  USGS QUAD   -  NEW FREEDOM (2019)
 JV6121
 JV6121                         *CURRENT SURVEY CONTROL
 JV6121  ______________________________________________________________________
 JV6121* NAD 83(1991) POSITION- 39 40 35.05715(N) 076 43 27.99886(W)   ADJUSTED
 JV6121  ______________________________________________________________________
 JV6121  GEOID HEIGHT    -        -32.273 (meters)                     GEOID18
 JV6121  LAPLACE CORR    -         -0.29  (seconds)                    DEFLEC18
 JV6121  HORZ ORDER      -  THIRD
 JV6121
 JV6121.The horizontal coordinates were established by classical geodetic methods
 JV6121.and adjusted by the National Geodetic Survey in January 1992.
 JV6121
 JV6121.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6121.GEOID18 height accuracy estimate available here.
 JV6121
 JV6121.Click photographs - Photos may exist for this station.
 JV6121
 JV6121.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6121
 JV6121. The following values were computed from the NAD 83(1991) position.
 JV6121
 JV6121;                    North         East     Units Scale Factor Converg.
 JV6121;SPC MD       -   223,136.776   423,642.562   MT  1.00004746   +0 10 22.6
 JV6121;SPC MD       -   732,074.57  1,389,900.64   sFT  1.00004746   +0 10 22.6
 JV6121;SPC PA S     -    38,604.132   687,990.592   MT  1.00005010   +0 39 55.3
 JV6121;SPC PA S     -   126,653.72  2,257,182.47   sFT  1.00005010   +0 39 55.3
 JV6121;UTM  18      - 4,393,263.497   352,105.320   MT  0.99986929   -1 06 04.2
 JV6121
 JV6121_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5210593263(NAD 83)
 JV6121
 JV6121                          SUPERSEDED SURVEY CONTROL
 JV6121
 JV6121  NAD 83(1986)-  39 40 35.05012(N)    076 43 28.00381(W) AD(       ) 3
 JV6121  NAD 27      -  39 40 34.68000(N)    076 43 29.10000(W) AD(       ) 3
 JV6121
 JV6121.Superseded values are not recommended for survey control.
 JV6121
 JV6121.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6121.See file dsdata.pdf to determine how the superseded data were derived.
 JV6121
 JV6121_MARKER: 90 = CHURCH SPIRE
 JV6121
 JV6121  HISTORY     - Date     Condition        Report By
 JV6121  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV6121  HISTORY     - 19950722 GOOD             USPSQD
 JV6121
 JV6121                          STATION DESCRIPTION
 JV6121
 JV6121'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV6121'THIS STATION IS A SPIRE LOCATED ON THE W END OF THE GUN-POWDER
 JV6121'BAPTIST CHURCH AT THE INTERSECTION OF FREEDLAND ROAD AND
 JV6121'MIDDLETOWN ROAD.
 JV6121'
 JV6121'THE SPIRE IS CONSTRUCTED OF WOOD, HAS A BELFRY AT ITS BASE AND
 JV6121'A WHITE ROOF WITH A SMALL FINIAL AT ITS TOP.  THE SPIRE IS
 JV6121'APPROXIMATELY 60 FEET HIGH.
 JV6121
 JV6121                          STATION RECOVERY (1995)
 JV6121
 JV6121'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6121'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3173 ***********************************************************************
 DI3173  DESIGNATION -  EL DORADO 1
 DI3173  PID         -  DI3173
 DI3173  STATE/COUNTY-  MD/DORCHESTER
 DI3173  COUNTRY     -  US
 DI3173  USGS QUAD   -  RHODESDALE (2016)
 DI3173
 DI3173                         *CURRENT SURVEY CONTROL
 DI3173  ______________________________________________________________________
 DI3173* NAD 83(2011) POSITION- 38 35 22.90654(N) 075 47 00.29923(W)   ADJUSTED
 DI3173* NAD 83(2011) ELLIP HT-   -27.623 (meters)        (06/27/12)   ADJUSTED
 DI3173* NAD 83(2011) EPOCH   -  2010.00
 DI3173* NAVD 88 ORTHO HEIGHT -     7.8   (meters)       26.    (feet) GPS OBS
 DI3173  ______________________________________________________________________
 DI3173  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3173  GEOID HEIGHT    -        -35.413 (meters)                     GEOID03
 DI3173  GEOID HEIGHT    -        -35.435 (meters)                     GEOID18
 DI3173  NAD 83(2011) X  -  1,225,936.669 (meters)                     COMP
 DI3173  NAD 83(2011) Y  - -4,838,964.680 (meters)                     COMP
 DI3173  NAD 83(2011) Z  -  3,956,799.658 (meters)                     COMP
 DI3173  LAPLACE CORR    -         -2.78  (seconds)                    DEFLEC18
 DI3173
 DI3173  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3173  Standards:
 DI3173         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3173            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3173  -------------------------------------------------------------------
 DI3173  NETWORK    0.86   1.10           0.38   0.32   0.56      0.07417567
 DI3173  -------------------------------------------------------------------
 DI3173  Click here for local accuracies and other accuracy information.
 DI3173
 DI3173.The horizontal coordinates were established by GPS observations
 DI3173.and adjusted by the National Geodetic Survey in June 2012.
 DI3173
 DI3173.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3173.been affixed to the stable North American tectonic plate. See 
 DI3173.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3173
 DI3173.The horizontal coordinates are valid at the epoch date displayed above
 DI3173.which is a decimal equivalence of Year/Month/Day.
 DI3173
 DI3173.The orthometric height was determined by GPS observations and a
 DI3173.high-resolution geoid model.
 DI3173
 DI3173.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3173.GEOID18 height accuracy estimate available here.
 DI3173
 DI3173.Click photographs - Photos may exist for this station.
 DI3173
 DI3173.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3173
 DI3173.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3173
 DI3173.The ellipsoidal height was determined by GPS observations
 DI3173.and is referenced to NAD 83.
 DI3173
 DI3173. The following values were computed from the NAD 83(2011) position.
 DI3173
 DI3173;                    North         East     Units Scale Factor Converg.
 DI3173;SPC MD       -   103,166.132   505,987.068   MT  0.99996225   +0 45 48.8
 DI3173;SPC MD       -   338,470.88  1,660,059.24   sFT  0.99996225   +0 45 48.8
 DI3173;UTM  18      - 4,271,537.291   431,772.075   MT  0.99965732   -0 29 19.2
 DI3173
 DI3173!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3173!SPC MD       -   1.00000433  x   0.99996225  =   0.99996658
 DI3173!UTM  18      -   1.00000433  x   0.99965732  =   0.99966165
 DI3173
 DI3173_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3177271537(NAD 83)
 DI3173
 DI3173|---------------------------------------------------------------------|
 DI3173| PID    Reference Object                     Distance      Geod. Az  |
 DI3173|                                                           dddmmss.s |
 DI3173| DI3174 EL DORADO 2                         340.815 METERS 03939     |
 DI3173|---------------------------------------------------------------------|
 DI3173
 DI3173                          SUPERSEDED SURVEY CONTROL
 DI3173
 DI3173  NAD 83(1991)-  38 35 22.90662(N)    075 47 00.29982(W) AD(       ) 1
 DI3173  ELLIP H (01/05/07)  -27.579  (m)                       GP(       ) 4 2
 DI3173
 DI3173.Superseded values are not recommended for survey control.
 DI3173
 DI3173.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3173.See file dsdata.pdf to determine how the superseded data were derived.
 DI3173
 DI3173_MARKER: DD = SURVEY DISK
 DI3173_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3173_STAMPING: EL DORADO 1
 DI3173_MARK LOGO: MD-019
 DI3173_PROJECTION: FLUSH
 DI3173_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3173_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3173+STABILITY: SURFACE MOTION
 DI3173_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3173+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3173
 DI3173  HISTORY     - Date     Condition        Report By
 DI3173  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3173
 DI3173                          STATION DESCRIPTION
 DI3173
 DI3173'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3173'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR HURLOCH,
 DI3173'MARYLAND.  IT IS  ABOUT 16.0 MI (25.7 KM) EAST OF CAMBRIDGE, MARYLAND,
 DI3173'ABOUT 19.8 MI (31.9 KM) SOUTHEAST OF  EASTON, MARYLAND AND ABOUT 18.5
 DI3173'MI (29.8 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3173'
 DI3173'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3173'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHEAST ON SR 16 FOR 5.1 MI
 DI3173'(8.2 KM) TO INTERSECTION WITH SR 392  (EAST NEW MARKET HULOCK ROAD).
 DI3173'CONTINUE STRAIGHT TO GET ON SR 392 AND PROCEED 0.8 MI  (1.3 KM)
 DI3173'NORTHEAST TO INTERSECTION WITH SR 14 (EAST NEW MARKET RHODESDALE
 DI3173'ROAD).  TURN  RIGHT AND PROCEED 7.7 MI (12.4 KM) EAST TO INTERSECTION
 DI3173'WITH SR 313 (ELDORADO SHARPTOWN  ROAD).  CONTINUE STRAIGHT TO GET ON
 DI3173'SR 313 AND PROCEED 0.5 MI (0.8 KM) NORTHEAST TO  INTERSECTION WITH
 DI3173'COKESBURY ROAD.              STATION IS NORTHEAST OF THE INTERSECTION.
 DI3173'STATION IS 4.0 FT (1.2 M) NORTHWEST OF THE  NORTHWEST EDGE OF
 DI3173'COKESBURY ROAD, 47.0 FT (14.3 M) EAST OF THE CENTERLINE OF SR 313  AND
 DI3173'66.00 FT (20.1 M) NORTH OF TELEPHONE JUNCTION BOX.  3 IN BRASS DISK
 DI3173'STAMPED EL DORADO 1 SET  IN THE TOP OF A 1 FT (0.3 M) CONCRETE
 DI3173'MONUMENT FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3174 ***********************************************************************
 DI3174  DESIGNATION -  EL DORADO 2
 DI3174  PID         -  DI3174
 DI3174  STATE/COUNTY-  MD/DORCHESTER
 DI3174  COUNTRY     -  US
 DI3174  USGS QUAD   -  RHODESDALE (2016)
 DI3174
 DI3174                         *CURRENT SURVEY CONTROL
 DI3174  ______________________________________________________________________
 DI3174* NAD 83(2011) POSITION- 38 35 31.41677(N) 075 46 51.31330(W)   ADJUSTED
 DI3174* NAD 83(2011) ELLIP HT-   -26.820 (meters)        (06/27/12)   ADJUSTED
 DI3174* NAD 83(2011) EPOCH   -  2010.00
 DI3174* NAVD 88 ORTHO HEIGHT -     8.6   (meters)       28.    (feet) GPS OBS
 DI3174  ______________________________________________________________________
 DI3174  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3174  GEOID HEIGHT    -        -35.414 (meters)                     GEOID03
 DI3174  GEOID HEIGHT    -        -35.436 (meters)                     GEOID18
 DI3174  NAD 83(2011) X  -  1,226,107.426 (meters)                     COMP
 DI3174  NAD 83(2011) Y  - -4,838,753.208 (meters)                     COMP
 DI3174  NAD 83(2011) Z  -  3,957,005.268 (meters)                     COMP
 DI3174  LAPLACE CORR    -         -2.79  (seconds)                    DEFLEC18
 DI3174
 DI3174  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3174  Standards:
 DI3174         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3174            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3174  -------------------------------------------------------------------
 DI3174  NETWORK    0.86   1.10           0.38   0.32   0.56      0.07486963
 DI3174  -------------------------------------------------------------------
 DI3174  Click here for local accuracies and other accuracy information.
 DI3174
 DI3174.The horizontal coordinates were established by GPS observations
 DI3174.and adjusted by the National Geodetic Survey in June 2012.
 DI3174
 DI3174.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3174.been affixed to the stable North American tectonic plate. See 
 DI3174.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3174
 DI3174.The horizontal coordinates are valid at the epoch date displayed above
 DI3174.which is a decimal equivalence of Year/Month/Day.
 DI3174
 DI3174.The orthometric height was determined by GPS observations and a
 DI3174.high-resolution geoid model.
 DI3174
 DI3174.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3174.GEOID18 height accuracy estimate available here.
 DI3174
 DI3174.Click photographs - Photos may exist for this station.
 DI3174
 DI3174.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3174
 DI3174.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3174
 DI3174.The ellipsoidal height was determined by GPS observations
 DI3174.and is referenced to NAD 83.
 DI3174
 DI3174. The following values were computed from the NAD 83(2011) position.
 DI3174
 DI3174;                    North         East     Units Scale Factor Converg.
 DI3174;SPC MD       -   103,431.417   506,201.007   MT  0.99996204   +0 45 54.5
 DI3174;SPC MD       -   339,341.24  1,660,761.14   sFT  0.99996204   +0 45 54.5
 DI3174;UTM  18      - 4,271,797.758   431,991.693   MT  0.99965696   -0 29 13.7
 DI3174
 DI3174!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3174!SPC MD       -   1.00000421  x   0.99996204  =   0.99996625
 DI3174!UTM  18      -   1.00000421  x   0.99965696  =   0.99966117
 DI3174
 DI3174_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3199171797(NAD 83)
 DI3174
 DI3174|---------------------------------------------------------------------|
 DI3174| PID    Reference Object                     Distance      Geod. Az  |
 DI3174|                                                           dddmmss.s |
 DI3174| DI3173 EL DORADO 1                         340.815 METERS 21939     |
 DI3174|---------------------------------------------------------------------|
 DI3174
 DI3174                          SUPERSEDED SURVEY CONTROL
 DI3174
 DI3174  NAD 83(1991)-  38 35 31.41686(N)    075 46 51.31389(W) AD(       ) 1
 DI3174  ELLIP H (01/05/07)  -26.777  (m)                       GP(       ) 4 2
 DI3174
 DI3174.Superseded values are not recommended for survey control.
 DI3174
 DI3174.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3174.See file dsdata.pdf to determine how the superseded data were derived.
 DI3174
 DI3174_MARKER: DD = SURVEY DISK
 DI3174_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3174_STAMPING: EL DORADO 2
 DI3174_MARK LOGO: MD-019
 DI3174_PROJECTION: FLUSH
 DI3174_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3174_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3174+STABILITY: SURFACE MOTION
 DI3174_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3174+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3174
 DI3174  HISTORY     - Date     Condition        Report By
 DI3174  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3174
 DI3174                          STATION DESCRIPTION
 DI3174
 DI3174'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3174'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR HURLOCH,
 DI3174'MARYLAND.  IT IS  ABOUT 16.1 MI (25.9 KM) EAST OF CAMBRIDGE, MARYLAND,
 DI3174'ABOUT 19.8 MI (31.9 KM) SOUTHEAST OF  EASTON, MARYLAND AND ABOUT 18.5
 DI3174'MI (29.8 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3174'
 DI3174'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3174'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHEAST ON SR 16 FOR 5.1 MI
 DI3174'(8.2 KM) TO INTERSECTION WITH SR 392  (EAST NEW MARKET HULOCK ROAD).
 DI3174'CONTINUE STRAIGHT TO GET ON SR 392 AND PROCEED 0.8 MI  (1.3 KM)
 DI3174'NORTHEAST TO INTERSECTION WITH SR 14 (EAST NEW MARKET RHODESDALE
 DI3174'ROAD).  TURN  RIGHT AND PROCEED 7.7 MI (12.4 KM) EAST TO INTERSECTION
 DI3174'WITH SR 313 (ELDORADO SHARPTOWN  ROAD).  CONTINUE STRAIGHT TO GET ON
 DI3174'SR 313 AND PROCEED 0.5 MI (0.8 KM) NORTHEAST TO  INTERSECTION WITH
 DI3174'COKESBURY ROAD.  TURN RIGHT AND PROCEED 0.2 MI (0.3 KM)  NORTHEAST TO
 DI3174'THE STATION ON THE LEFT.          STATION IS 2.0 FT (0.6 M) WEST OF
 DI3174'THE WEST EDGE OF COKESBURY ROAD, 500.0 FT (152.4 M) SOUTH  OF GRAVEL
 DI3174'DRIVE  AND 1000.00 FT (304.8 M) NORTH OF INTERSECTION WITH SR 313.  3
 DI3174'IN BRASS DISK  STAMPED EL DORADO 2 SET IN THE TOP OF A 1 FT (0.3 M)
 DI3174'CONCRETE MONUMENT FLUSH WITH THE  GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6067 ***********************************************************************
 JV6067  DESIGNATION -  ELDER
 JV6067  PID         -  JV6067
 JV6067  STATE/COUNTY-  MD/CARROLL
 JV6067  COUNTRY     -  US
 JV6067  USGS QUAD   -  FINKSBURG (2016)
 JV6067
 JV6067                         *CURRENT SURVEY CONTROL
 JV6067  ______________________________________________________________________
 JV6067* NAD 83(1991) POSITION- 39 24 32.07829(N) 076 57 07.90283(W)   ADJUSTED
 JV6067* NAVD 88 ORTHO HEIGHT -   209.    (meters)      686.    (feet) SCALED
 JV6067  ______________________________________________________________________
 JV6067  GEOID HEIGHT    -        -31.969 (meters)                     GEOID18
 JV6067  LAPLACE CORR    -         -1.50  (seconds)                    DEFLEC18
 JV6067  HORZ ORDER      -  SECOND
 JV6067
 JV6067.The horizontal coordinates were established by classical geodetic methods
 JV6067.and adjusted by the National Geodetic Survey in January 1992.
 JV6067
 JV6067.The orthometric height was scaled from a topographic map.
 JV6067
 JV6067.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6067.GEOID18 height accuracy estimate available here.
 JV6067
 JV6067.Click photographs - Photos may exist for this station.
 JV6067
 JV6067.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6067
 JV6067. The following values were computed from the NAD 83(1991) position.
 JV6067
 JV6067;                    North         East     Units Scale Factor Converg.
 JV6067;SPC MD       -   193,402.859   404,117.185   MT  0.99999307   +0 01 48.0
 JV6067;SPC MD       -   634,522.55  1,325,841.13   sFT  0.99999307   +0 01 48.0
 JV6067;UTM  18      - 4,363,973.597   331,926.921   MT  0.99994781   -1 14 22.7
 JV6067
 JV6067!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6067!SPC MD       -   0.99997226  x   0.99999307  =   0.99996533
 JV6067!UTM  18      -   0.99997226  x   0.99994781  =   0.99992007
 JV6067
 JV6067:                Primary Azimuth Mark                     Grid Az
 JV6067:SPC MD       -  ELDER AZ MK                              151 36 11.3
 JV6067:UTM  18      -  ELDER AZ MK                              152 52 22.0
 JV6067
 JV6067_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3192663973(NAD 83)
 JV6067
 JV6067|---------------------------------------------------------------------|
 JV6067| PID    Reference Object                     Distance      Geod. Az  |
 JV6067|                                                           dddmmss.s |
 JV6067| JV6026 REISTERSTOWN METRO WATER TANK       APPROX.12.9 KM 0555501.4 |
 JV6067| JV6625 ELDER RM 3                           26.607 METERS 08618     |
 JV6067| JV6041 MT WILSON SANITORIUM TANK           APPROX.16.4 KM 0995718.1 |
 JV6067| JV6037 WBAL WEST RADIO MAST                APPROX.15.9 KM 1032049.8 |
 JV6067| JV6029 RANDALLSTOWN POLICE RADIO MAST      APPROX.11.1 KM 1042751.0 |
 JV6067| CS5363 UNIDENTIFIED MICROWAVE TOWER                       13038     |
 JV6067| JV6627 ELDER AZ MK RESET                                  14955     |
 JV6067| CA9384 ELDER AZ MK                                        1513759.3 |
 JV6067| JV6626 ELDER RM 1                           33.162 METERS 16918     |
 JV6067| JV6068 SYKESVILLE SPRINGFIELD HOSP TK      APPROX. 2.8 KM 1962611.8 |
 JV6067| JV6624 ELDER RM 2                           29.185 METERS 31140     |
 JV6067|---------------------------------------------------------------------|
 JV6067
 JV6067                          SUPERSEDED SURVEY CONTROL
 JV6067
 JV6067  NAD 83(1986)-  39 24 32.07698(N)    076 57 07.91030(W) AD(       ) 2
 JV6067  NAD 27      -  39 24 31.70200(N)    076 57 08.98300(W) AD(       ) 2
 JV6067
 JV6067.Superseded values are not recommended for survey control.
 JV6067
 JV6067.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6067.See file dsdata.pdf to determine how the superseded data were derived.
 JV6067
 JV6067_MARKER: DS = TRIANGULATION STATION DISK
 JV6067_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6067_STAMPING: ELDER 1943
 JV6067_MARK LOGO: CGS
 JV6067_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6067_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6067+STABILITY: SURFACE MOTION
 JV6067_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6067+SATELLITE: SATELLITE OBSERVATIONS - June 04, 1981
 JV6067
 JV6067  HISTORY     - Date     Condition        Report By
 JV6067  HISTORY     - 1943     MONUMENTED       CGS
 JV6067  HISTORY     - 1943     GOOD             CGS
 JV6067  HISTORY     - 1957     GOOD             CGS
 JV6067  HISTORY     - 1959     GOOD             MDDT
 JV6067  HISTORY     - 1981     GOOD             NGS
 JV6067  HISTORY     - 19810604 GOOD             NGS
 JV6067
 JV6067                          STATION DESCRIPTION
 JV6067
 JV6067'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV6067'THE STATION IS LOCATED ABOUT 0.4 MILE NNW OF THE VILLAGE OF
 JV6067'ELDERSBURG ON LAND OWNED BY N.A. PARISH OF BALTIMORE, MD., WHO
 JV6067'HAS A SUMMER HOME ABOUT 0.25 MILE W OF ELDERSBURG, ON THE N SIDE
 JV6067'OF STATE HIGHWAY 26.  IT IS IN A WOODED TRACT, OPPOSITE A HOUSE
 JV6067'ON THE E SIDE OF THE ROAD, 26 FEET W OF THE CENTER OF THE ROAD,
 JV6067'11 FEET W OF A FENCE LINE, AND 67 FEET N BY W OF TRANSFORMER
 JV6067'POLE NO.58414.  IT IS STAMPED ELDER 1943 AND PROJECTS 4 INCHES.
 JV6067'
 JV6067'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV6067'DISKS SET IN CONCRETE.
 JV6067'
 JV6067'REFERENCE MARK NO.1 IS S BY E OF THE STATION, 19 FEET W OF THE
 JV6067'CENTER OF THE ROAD, 1 FOOT W OF THE FENCE LINE AND 42 FEET S BY
 JV6067'W OF TRANSFORMER POLE NO.58414.  IT IS STAMPED ELDER NO.1 1943
 JV6067'AND PROJECTS 4 INCHES.
 JV6067'
 JV6067'REFERENCE MARK NO.2 IS NW OF THE STATION, 92 FEET W OF THE
 JV6067'CENTER OF THE ROAD AND 74 FEET W OF A GATE IN THE FENCE LINE.  IT
 JV6067'IS STAMPED ELDER NO.2 1943 AND PROJECTS 4 INCHES.
 JV6067'
 JV6067'THE AZIMUTH MARK IS ABOUT 0.5 MILE (AIR LINE) SE OF THE STATION,
 JV6067'0.15 MILE E ALONG STATE HIGHWAY 26 FROM THE JUNCTION OF STATE
 JV6067'HIGHWAYS 26 AND 32 IN ELDERSBURG.  IT IS OPPOSITE A LARGE BRICK
 JV6067'GARAGE, 20 FEET N OF THE CENTER OF HIGHWAY 26, 7 FEET W OF
 JV6067'TELEGRAPH POLE NO. N1, STAMPED ELDER 1943 AND PROJECTS 6 INCHES.
 JV6067'
 JV6067'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 26 AND
 JV6067'32 IN ELDERSBURG GO W ON HIGHWAY 26 FOR 0.05 MILE THEN TURN
 JV6067'RIGHT ON A MACADAM ROAD AND GO 0.3 MILE TO A FARMHOUSE ON THE
 JV6067'RIGHT AND THE STATION ON THE LEFT.
 JV6067'
 JV6067'A 100-FOOT LIGHT AT CROSS 1933 IS VISIBLE FROM THE GROUND.
 JV6067'
 JV6067'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT HAMMOND 1933.
 JV6067'
 JV6067'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT SLACK.
 JV6067'
 JV6067'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT COOK.
 JV6067'
 JV6067'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAY.
 JV6067'
 JV6067'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT BLACK 1938.
 JV6067'
 JV6067'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT TAYLOR.
 JV6067'
 JV6067'A 90-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT BIRD.
 JV6067'
 JV6067'HEIGHT OF LIGHT ABOVE STATION MARK 33 METERS.
 JV6067
 JV6067                          STATION RECOVERY (1943)
 JV6067
 JV6067'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 JV6067'RECOVERED IN GOOD CONDITION.
 JV6067
 JV6067                          STATION RECOVERY (1957)
 JV6067
 JV6067'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCL)
 JV6067'THE STATION, BOTH REFERENCE MARKS AND THE AZIMUTH MARK WERE
 JV6067'RECOVERED IN GOOD CONDITION.  THE DESCRIPTION IS ADEQUATE AND
 JV6067'COMPLETE WITH THE ONE CORRECTION--
 JV6067'
 JV6067'THE GARAGE OPPOSITE THE AZIMUTH MARK HAS A STONE FRONT AND IS
 JV6067'OCCUPIED BY CLEMENTS MOTOR COMPANY.
 JV6067
 JV6067                          STATION RECOVERY (1959)
 JV6067
 JV6067'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1959
 JV6067'STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED.  THE
 JV6067'AZIMUTH MARK WAS MOVED DUE TO PARTIAL OBSTRUCTION OF THE LINE
 JV6067'BETWEEN THE STATION AND THE AZIMUTH MARK.
 JV6067'
 JV6067'THE AZIMUTH MARK IS ABOUT 0.5 MILE SE OF THE STATION, 0.15 MILE
 JV6067'E ALONG STATE HWY 26 FROM THE JUNCTION OF HWYS 26 AND 32 IN
 JV6067'ELDERSBURG.  IT IS OPPOSITE A LARGE BRICK GARAGE, 45.0 FEET N
 JV6067'OF THE CENTER OF HWY 26, 2.0 FEET E OF C AND P POLE 6, AND 110
 JV6067'FEET W OF POWER POLE 273578, SET FLUSH TO THE GROUND AND STAMPED
 JV6067'ELDER AZ 1943 RESET 1959.
 JV6067'
 JV6067'OFFICE NOTE--IN FEB. 1975, R.G. POUST TOOK POLARIS OBSERVATIONS TO
 JV6067'THE AZIMUTH MARK.
 JV6067
 JV6067                          STATION RECOVERY (1981)
 JV6067
 JV6067'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981 (CLN)
 JV6067'THE STATION MARK, THE AZIMUTH MARK AND REFERENCE MARK TWO WERE FOUND
 JV6067'IN GOOD CONDITION.  REFERENCE MARK ONE WAS SEARCHED FOR BUT NOT
 JV6067'FOUND.  THE AZIMUTH MARK IS NO LONGER VISIBLE FROM THE
 JV6067'GROUND.  NUMEROUS TREES HAVE GROWN ON LINE AND PERMISSION TO CUT THEM
 JV6067'COULD NOT BE OBTAINED.  A NEW REFERENCE MARK THREE WAS
 JV6067'ESTABLISHED.  THE DISTANCE TO REFERENCE MARK TWO AGREED WITH THE
 JV6067'MOST RECENT INFORMATION.
 JV6067'
 JV6067'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV6067'
 JV6067'THE STATION IS LOCATED 27.4 KM (17 MILES) NORTHWEST OF BALTIMORE, 6.4
 JV6067'KM (4 MI) NORTH-NORTHEAST OF SYKESVILLE, 0.5 KM (0.3 MI) NORTHWEST OF
 JV6067'ELDERSBURG AND ON A LOW WOODED HILL.  OWNERSHIP, CARROLL COUNTY.
 JV6067'
 JV6067'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 32 AND
 JV6067'26 IN ELDERSBURG, GO NORTH ON STATE HIGHWAY 32 FOR 0.4 KM (0.25 MI)
 JV6067'TO A CROSSROADS.  TURN LEFT AND GO WEST ON LONDONTOWN BOULEVARD FOR
 JV6067'0.2 KM (0.1 MI) TO THE TOP OF A LOW HILL AT A POINT WHERE THE ROAD
 JV6067'CURVES NORTH AND THE STATION ON THE LEFT, JUST WEST OF A WIRE FENCE.
 JV6067'
 JV6067'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 JV6067'STAMPED---ELDER 1943--- SET INTO THE TOP OF A SQUARE CONCRETE
 JV6067'MONUMENT 30 CM (12 INCHES) ON SIDE PROJECTING 8 CM (3 INCHES) ABOVE
 JV6067'THE GROUND LOCATED 29.7 METERS (95.7 FEET) NW FROM A POWERLINE POLE
 JV6067'NUMBERED 58414, 18.0 METERS (59.0 FEET) W FROM THE CENTER OF THE
 JV6067'PAVED ROAD, 2.6 METERS (8.4 FEET) W FROM THE WIRE FENCE, AND 2.4
 JV6067'METERS (8.0 FEET) W FROM A WITNESS POST.
 JV6067'
 JV6067'REFERENCE MARK NO. 2 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 JV6067'NOS) DISK STAMPED---ELDER NO. 2 1943--- SET INTO THE TOP OF A
 JV6067'SQUARE CONCRETE MONUMENT 30 CM (12 INCHES) ON SIDE LOCATED 31.1
 JV6067'METERS (101.9 FEET) NW FROM THE WITNESS POST WHICH IS NEAR THE
 JV6067'STATION MARK, 30.0 METERS (98.5 FEET) W FROM THE CENTER OF THE ROAD,
 JV6067'21.4 METERS (70.3 FEET) W FROM THE WIRE FENCE, 0.9 METER (3.0 FEET) S
 JV6067'FROM A WITNESS POST, AND 0.6 METER (2.0 FEET) HIGHER THAN THE STATION.
 JV6067'
 JV6067'REFERENCE MARK NO. 4 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 JV6067'STAMPED---ELDER 1943 NO 4 1981--- SET IN A DRILL HOLE IN THE
 JV6067'NORTHWEST END OF A CURB ALONG THE NORTHEAST SIDE OF THE PAVED ROAD.
 JV6067'MARK PROJECTS 152 CM (0.5 FT) AND IS LOCATED 24.1 METERS (79.2 FEET)
 JV6067'E FROM THE WITNESS POST WHICH IS NEAR THE STATION MARK, 23.8 METERS
 JV6067'(78.0 FEET) NE FROM THE POWERLINE POLE, 5.9 METERS (19.5 FEET) E FROM
 JV6067'THE CENTER OF THE PAVED ROAD, 0.6 METER (2.0 FEET) SW FROM THE
 JV6067'NORTHWEST END OF THE CURB, AND 2.5 METERS (8 FEET) LOWER THAN THE
 JV6067'STATION.
 JV6067'
 JV6067'AZIMUTH MARK NO. 2 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 JV6067'NOS) DISK STAMPED---ELDER 1943 RESET 1959--- SET INTO THE TOP OF A
 JV6067'ROUND CONCRETE MONUMENT 25 CM (10 INCHES) IN DIAMETER FLUSH WITH THE
 JV6067'GROUND LOCATED 13.4 METERS (43.8 FEET) N FROM THE CENTER OF STATE
 JV6067'HIGHWAY 26, 5.3 METERS (17.5 FEET) E FROM A TELEPHONE POLE NUMBERED
 JV6067'5-3/4, 0.6 METER (2.0 FEET) E FROM A TELEPHONE POLE NUMBERED 6, AND
 JV6067'0.4 METER (1.2 FEET) S FROM A WITNESS POST.
 JV6067'
 JV6067'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE HIGHWAYS 32
 JV6067'AND 26, GO EAST ON STATE HIGHWAY 26 FOR 0.25 KM (0.15 MI) TO THE MARK
 JV6067'ON THE LEFT.
 JV6067
 JV6067                          STATION RECOVERY (1981)
 JV6067
 JV6067'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 JV6067'THE STATION MARK, REFERENCE MARK TWO AND THE AZIMUTH MARK WERE
 JV6067'RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK ONE WAS
 JV6067'SEARCHED FOR BUT NOT FOUND AND BELIEVED DESTROYED.  THE AZIMUTH MARK
 JV6067'IS OBSTRUCTED BY SEVERAL TREES AND PERMISSION TO CUT THEM COULD NOT BE
 JV6067'OBTAINED AT THIS DATE.  A NEW REFERENCE MARK THREE WAS ESTABLISHED.
 JV6067'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV6067'THE STATION IS LOCATED ABOUT 27.4 KM (17.05 MI) NORTHWEST OF
 JV6067'BALTIMORE, 6.4 KM (4.00 MI) NORTH-NORTHEAST OF SYKESVILLE, 0.5 KM
 JV6067'(0.30 MI) NORTHWEST OF ELDERSBURG AND ON A LOW WOODED HILL.
 JV6067'OWNERSHIP--CARROLL COUNTY.
 JV6067'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 26 AND 32 IN
 JV6067'ELDERSBURG, GO NORTH ON STATE HIGHWAY 32 FOR 0.4 KM (0.25 MI) TO A
 JV6067'CROSSROADS.  TURN LEFT AND WEST ON BARTHOLOW ROAD FOR 0.2 KM
 JV6067'(0.10 MI) TO THE TOP OF A LOW HILL AT THE POINT WHERE THE ROAD CURVES
 JV6067'TO THE NORTH AND THE STATION ON THE LEFT, JUST WEST OF A WIRE FENCE.
 JV6067'THE STATION DISK IS SET IN THE TOP OF THE 0.3 M (1.0 FT) SQUARE
 JV6067'CONCRETE MONUMENT WHICH PROJECTS 0.08 M (0.3 FT) ABOVE THE SURFACE OF
 JV6067'THE GROUND.  IT IS 29.16 M (95.7 FT) NORTHWEST OF A POWERLINE POLE
 JV6067'NUMBERED 58414, 18.0 M (59 FT) WEST OF THE CENTER OF THE PAVED ROAD,
 JV6067'2.56 M (8.4 FT) WEST OF THE WIRE FENCE AND 2.45 M (8.0 FT) WEST OF A
 JV6067'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1255 ***********************************************************************
 JW1255  DESIGNATION -  ELDER HILL LOT
 JW1255  PID         -  JW1255
 JW1255  STATE/COUNTY-  MD/GARRETT
 JW1255  COUNTRY     -  US
 JW1255  USGS QUAD   -  SANG RUN (2016)
 JW1255
 JW1255                         *CURRENT SURVEY CONTROL
 JW1255  ______________________________________________________________________
 JW1255* NAD 83(1995) POSITION- 39 36 18.82698(N) 079 23 44.13418(W)   ADJUSTED
 JW1255  ______________________________________________________________________
 JW1255  GEOID HEIGHT    -        -31.346 (meters)                     GEOID18
 JW1255  LAPLACE CORR    -          1.17  (seconds)                    DEFLEC18
 JW1255  HORZ ORDER      -  THIRD
 JW1255
 JW1255.The horizontal coordinates were established by classical geodetic methods
 JW1255.and adjusted by the National Geodetic Survey in April 1998.
 JW1255
 JW1255.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1255.GEOID18 height accuracy estimate available here.
 JW1255
 JW1255.Click photographs - Photos may exist for this station.
 JW1255
 JW1255.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1255
 JW1255. The following values were computed from the NAD 83(1995) position.
 JW1255
 JW1255;                    North         East     Units Scale Factor Converg.
 JW1255;SPC MD       -   217,897.850   194,275.200   MT  1.00003084   -1 30 12.8
 JW1255;SPC MD       -   714,886.53    637,384.55   sFT  1.00003084   -1 30 12.8
 JW1255;SPC WV N     -   122,704.647   608,966.328   MT  0.99994081   +0 03 59.7
 JW1255;SPC WV N     -   402,573.50  1,997,917.03   sFT  0.99994081   +0 03 59.7
 JW1255;UTM  17      - 4,385,172.670   637,740.512   MT  0.99983359   +1 01 22.7
 JW1255
 JW1255_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3774085172(NAD 83)
 JW1255
 JW1255                          SUPERSEDED SURVEY CONTROL
 JW1255
 JW1255  NAD 83(1991)-  39 36 18.82730(N)    079 23 44.14072(W) AD(       ) 3
 JW1255  NAD 83(1986)-  39 36 18.83518(N)    079 23 44.14327(W) AD(       ) 3
 JW1255  NAD 27      -  39 36 18.52069(N)    079 23 44.98200(W) AD(       ) 3
 JW1255
 JW1255.Superseded values are not recommended for survey control.
 JW1255
 JW1255.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1255.See file dsdata.pdf to determine how the superseded data were derived.
 JW1255
 JW1255_MARKER: 57 = LOOKOUT TOWER
 JW1255
 JW1255  HISTORY     - Date     Condition        Report By
 JW1255  HISTORY     - 1975     FIRST OBSERVED   NGS
 JW1255
 JW1255                          STATION DESCRIPTION
 JW1255
 JW1255'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (WOM)
 JW1255'THE STATION, ELDER HILL LOOKOUT TOWER, IS THE APEX OF THE ROOF
 JW1255'OF THE CABIN ATOP A FOUR LEGGED SELF-SUPPORTED, STEEL TOWER.
 JW1255'THE STRUCTURE HAS AN OVERALL HEIGHT OF ABOUT 80 FEET.
 JW1255'
 JW1255'THE STATION IS ABOUT 13-1/2 MILES NORTH OF OAKLAND, 4-1/4 MILES
 JW1255'WEST OF ACCIDENT, 4-1/2 MILES EAST OF THE WEST VIRGINIA-MARYLAND
 JW1255'STATE LINE AND ON THE SUMMIT OF ELDER HILL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5946 ***********************************************************************
 JV5946  DESIGNATION -  ELDORADO
 JV5946  PID         -  JV5946
 JV5946  STATE/COUNTY-  MD/MONTGOMERY
 JV5946  COUNTRY     -  US
 JV5946  USGS QUAD   -  BELTSVILLE (2016)
 JV5946
 JV5946                         *CURRENT SURVEY CONTROL
 JV5946  ______________________________________________________________________
 JV5946* NAD 83(1991) POSITION- 39 02 24.75615(N) 076 59 30.31302(W)   ADJUSTED
 JV5946* NAVD 88 ORTHO HEIGHT -   171.5   (meters)      563.    (feet) VERTCON3
 JV5946  ______________________________________________________________________
 JV5946  GEOID HEIGHT    -        -31.999 (meters)                     GEOID18
 JV5946  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 JV5946  HORZ ORDER      -  FIRST
 JV5946
 JV5946.The horizontal coordinates were established by classical geodetic methods
 JV5946.and adjusted by the National Geodetic Survey in January 1992.
 JV5946
 JV5946.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5946.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5946
 JV5946.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5946.GEOID18 height accuracy estimate available here.
 JV5946
 JV5946.Click photographs - Photos may exist for this station.
 JV5946
 JV5946.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5946
 JV5946. The following values were computed from the NAD 83(1991) position.
 JV5946
 JV5946;                    North         East     Units Scale Factor Converg.
 JV5946;SPC MD       -   152,469.983   400,713.917   MT  0.99995395   +0 00 18.6
 JV5946;SPC MD       -   500,228.60  1,314,675.58   sFT  0.99995395   +0 00 18.6
 JV5946;UTM  18      - 4,323,126.362   327,620.972   MT  0.99996590   -1 15 17.4
 JV5946
 JV5946!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5946!SPC MD       -   0.99997812  x   0.99995395  =   0.99993207
 JV5946!UTM  18      -   0.99997812  x   0.99996590  =   0.99994402
 JV5946
 JV5946:                Primary Azimuth Mark                     Grid Az
 JV5946:SPC MD       -  COLESVILLE METH CH SPIRE                 340 28 13.5
 JV5946:UTM  18      -  COLESVILLE METH CH SPIRE                 341 43 49.5
 JV5946
 JV5946_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2762023126(NAD 83)
 JV5946
 JV5946|---------------------------------------------------------------------|
 JV5946| PID    Reference Object                     Distance      Geod. Az  |
 JV5946|                                                           dddmmss.s |
 JV5946| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 5.5 KM 2703441.9 |
 JV5946| JV4306 WHEATON RAD STA WTOP CEN TOWER      APPROX. 4.7 KM 2722641.2 |
 JV5946| JV4292 COLESVILLE METH CH SPIRE            APPROX. 3.9 KM 3402832.1 |
 JV5946|---------------------------------------------------------------------|
 JV5946
 JV5946                          SUPERSEDED SURVEY CONTROL
 JV5946
 JV5946  NAD 83(1986)-  39 02 24.75543(N)    076 59 30.32347(W) AD(       ) 1
 JV5946  NAD 27      -  39 02 24.36243(N)    076 59 31.40820(W) AD(       ) 1
 JV5946  NGVD 29 (07/19/86)  171.7    (m)          563.     (f) VERT ANG       
 JV5946
 JV5946.Superseded values are not recommended for survey control.
 JV5946
 JV5946.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5946.See file dsdata.pdf to determine how the superseded data were derived.
 JV5946
 JV5946_MARKER: DS = TRIANGULATION STATION DISK
 JV5946_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV5946_SP_SET: ROOF
 JV5946_STAMPING: ELDORADO 1969
 JV5946_MARK LOGO: CGS
 JV5946_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV5946
 JV5946  HISTORY     - Date     Condition        Report By
 JV5946  HISTORY     - 1970     MONUMENTED       NGS
 JV5946
 JV5946                          STATION DESCRIPTION
 JV5946
 JV5946'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5946'THE STATION IS ON THE ROOF OF THE ELDORADO TOWERS APARTMENT BUILDING,
 JV5946'THE ADDRESS OF THE BUILDING IS 11200 LOCKWOOD DRIVE, SILVER SPRING
 JV5946'MARYLAND.
 JV5946'
 JV5946'THE STATION MARK IS A STANDARD DISK, STAMPED
 JV5946'ELDORADO 1969, FIXED TO THE ROOF WITH ROOFING COMPOUND UNDER A 6
 JV5946'INCH CYLINDRICAL COPPER CAP.  THE MARK IS ON THE ROOF OF A STAIRCASE
 JV5946'LEADING TO A SUNDECK AND IS NEAR THE EAST END OF THE SOUTH
 JV5946'WING OF THE BUILDING.  IT IS 6.7 FEET NORTHWEST OF THE SOUTHEAST
 JV5946'CORNER AND 6.1 FEET SOUTHWEST OF THE NORTHEAST CORNER OF THE ROOF
 JV5946'OF THE STAIRCASE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5948 ***********************************************************************
 HV5948  DESIGNATION -  ELEANOR MSFC 1910
 HV5948  PID         -  HV5948
 HV5948  STATE/COUNTY-  MD/DORCHESTER
 HV5948  COUNTRY     -  US
 HV5948  USGS QUAD   -  CHURCH CREEK (2016)
 HV5948
 HV5948                         *CURRENT SURVEY CONTROL
 HV5948  ______________________________________________________________________
 HV5948* NAD 83(1991) POSITION- 38 31 54.30396(N) 076 12 54.34605(W)   ADJUSTED
 HV5948* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5948  ______________________________________________________________________
 HV5948  GEOID HEIGHT    -        -34.792 (meters)                     GEOID18
 HV5948  LAPLACE CORR    -         -5.44  (seconds)                    DEFLEC18
 HV5948  HORZ ORDER      -  THIRD
 HV5948
 HV5948.The horizontal coordinates were established by classical geodetic methods
 HV5948.and adjusted by the National Geodetic Survey in January 1992.
 HV5948
 HV5948.The orthometric height was scaled from a topographic map.
 HV5948
 HV5948.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5948.GEOID18 height accuracy estimate available here.
 HV5948
 HV5948.Click photographs - Photos may exist for this station.
 HV5948
 HV5948.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5948
 HV5948. The following values were computed from the NAD 83(1991) position.
 HV5948
 HV5948;                    North         East     Units Scale Factor Converg.
 HV5948;SPC MD       -    96,322.000   468,436.220   MT  0.99996777   +0 29 33.5
 HV5948;SPC MD       -   316,016.43  1,536,861.17   sFT  0.99996777   +0 29 33.5
 HV5948;UTM  18      - 4,265,516.236   394,090.934   MT  0.99973813   -0 45 25.2
 HV5948
 HV5948!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5948!SPC MD       -   1.00000518  x   0.99996777  =   0.99997295
 HV5948!UTM  18      -   1.00000518  x   0.99973813  =   0.99974331
 HV5948
 HV5948:                Primary Azimuth Mark                     Grid Az
 HV5948:SPC MD       -  LANEY MSFC 1910                          344 58 25.3
 HV5948:UTM  18      -  LANEY MSFC 1910                          346 13 24.0
 HV5948
 HV5948_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9409065516(NAD 83)
 HV5948
 HV5948|---------------------------------------------------------------------|
 HV5948| PID    Reference Object                     Distance      Geod. Az  |
 HV5948|                                                           dddmmss.s |
 HV5948| HV5899 LANEY MSFC 1910                     APPROX. 0.8 KM 3452758.8 |
 HV5948|---------------------------------------------------------------------|
 HV5948
 HV5948                          SUPERSEDED SURVEY CONTROL
 HV5948
 HV5948  NAD 83(1986)-  38 31 54.30163(N)    076 12 54.36167(W) AD(       ) 3
 HV5948  NAD 27      -  38 31 53.89200(N)    076 12 55.54600(W) AD(       ) 3
 HV5948  USSD        -  38 31 54.27600(N)    076 12 55.32300(W) AD(       ) 3
 HV5948
 HV5948.Superseded values are not recommended for survey control.
 HV5948
 HV5948.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5948.See file dsdata.pdf to determine how the superseded data were derived.
 HV5948
 HV5948_MARKER: Z = SEE DESCRIPTION
 HV5948_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5948_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5948+STABILITY: SURFACE MOTION
 HV5948
 HV5948  HISTORY     - Date     Condition        Report By
 HV5948  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5948  HISTORY     - 1941     MARK NOT FOUND   CGS
 HV5948
 HV5948                          STATION DESCRIPTION
 HV5948
 HV5948'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5948'ON THE SOUTHWESTERN SHORE OF FISHING CREEK, ABOUT 5/8 MILE SSE OF
 HV5948'MCKEILS POINT, AND 1 MILE S OF TOWN POINT, ON SANDY LAND AT EDGE
 HV5948'OF WOODS, ABOUT 10 YARDS SW BY S OF SHORE, 15 YARDS WNW OF SHORE,
 HV5948'28 YARDS WSW OF EXTREME END OF SMALL MARSH POINT, AND 70 YARDS
 HV5948'WNW OF SHORE END OF FENCE EXTENDING INTO WATER AT A MARSH POINT.
 HV5948'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5948'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5948'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5948'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE
 HV5948'MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP
 HV5948'2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS
 HV5948'TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 HV5948'10-INCH CEDAR TREE, 17.95 METERS (58.9 FEET), S 7 DEG 9 MIN W.
 HV5948'NAIL IN BLAZE IN 10-INCH CEDAR TREE, 6.70 METERS (21.98 FEET), N
 HV5948'86 DEG 10 MIN W.  NAIL IN BLAZE IN 6-INCH CEDAR TREE, 8.40 METERS
 HV5948'(27.56 FEET), N 59 DEG 30 MIN W.  NEAR PEAK OF HOUSE, 1/4 MILE, N
 HV5948'19 DEG 2 MIN W.  MIDDLE DORMER WINDOW OF HOUSE, 1 MILE, N 20 DEG 3
 HV5948'MIN E.  NEAR PEAK OF BARN, 1 MILE, S 23 DEG 19 MIN W.  LEFT
 HV5948'CHIMNEY OF HOUSE, 1 MILE, N 34 DEG 24 MIN E.  RIGHT CHIMNEY OF
 HV5948'HOUSE, 7/8 MILE, N 71 DEG 3 MIN E.  RIGHT END OF BARN ROOF 1 MILE,
 HV5948'N 79 DEG 44 MIN E.
 HV5948
 HV5948                          STATION RECOVERY (1941)
 HV5948
 HV5948'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HV5948'SEARCHED FOR, BUT NOT FOUND.  THE SHORE HAS WASHED BADLY, HERE AND
 HV5948'THERE ARE TREES IN THE WATER ALL ALONG SHORE.
 HV5948'
 HV5948'RECOMMENDED THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5626 ***********************************************************************
 JV5626  DESIGNATION -  ELECTRIC
 JV5626  PID         -  JV5626
 JV5626  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5626  COUNTRY     -  US
 JV5626  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5626
 JV5626                         *CURRENT SURVEY CONTROL
 JV5626  ______________________________________________________________________
 JV5626* NAD 83(1991) POSITION- 39 15 54.15502(N) 076 37 40.57525(W)   ADJUSTED
 JV5626* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5626  ______________________________________________________________________
 JV5626  GEOID HEIGHT    -        -32.725 (meters)                     GEOID18
 JV5626  LAPLACE CORR    -         -5.66  (seconds)                    DEFLEC18
 JV5626  HORZ ORDER      -  THIRD
 JV5626
 JV5626.The horizontal coordinates were established by classical geodetic methods
 JV5626.and adjusted by the National Geodetic Survey in January 1992.
 JV5626
 JV5626.The orthometric height was scaled from a topographic map.
 JV5626
 JV5626.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5626.GEOID18 height accuracy estimate available here.
 JV5626
 JV5626.Click photographs - Photos may exist for this station.
 JV5626
 JV5626.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5626
 JV5626. The following values were computed from the NAD 83(1991) position.
 JV5626
 JV5626;                    North         East     Units Scale Factor Converg.
 JV5626;SPC MD       -   177,495.040   432,108.880   MT  0.99997287   +0 14 00.7
 JV5626;SPC MD       -   582,331.64  1,417,677.22   sFT  0.99997287   +0 14 00.7
 JV5626;UTM  18      - 4,347,452.325   359,557.654   MT  0.99984286   -1 01 49.8
 JV5626
 JV5626!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5626!SPC MD       -   1.00000470  x   0.99997287  =   0.99997757
 JV5626!UTM  18      -   1.00000470  x   0.99984286  =   0.99984756
 JV5626
 JV5626:                Primary Azimuth Mark                     Grid Az
 JV5626:SPC MD       -  CURB                                     124 33 54.1
 JV5626:UTM  18      -  CURB                                     125 49 44.6
 JV5626
 JV5626_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5955747452(NAD 83)
 JV5626
 JV5626|---------------------------------------------------------------------|
 JV5626| PID    Reference Object                     Distance      Geod. Az  |
 JV5626|                                                           dddmmss.s |
 JV5626| JV5505 BALTIMORE GAS ELEC GAS HOLDER       APPROX. 1.0 KM 0414016.8 |
 JV5626| JV5592 CURB                                APPROX. 1.3 KM 1244754.8 |
 JV5626| CB1138 DAVE                                               12638     |
 JV5626|---------------------------------------------------------------------|
 JV5626
 JV5626                          SUPERSEDED SURVEY CONTROL
 JV5626
 JV5626  NAD 83(1986)-  39 15 54.15155(N)    076 37 40.58415(W) AD(       ) 3
 JV5626  NAD 27      -  39 15 53.77000(N)    076 37 41.69600(W) AD(       ) 3
 JV5626  USSD        -  39 15 54.13400(N)    076 37 41.53400(W) AD(       ) 3
 JV5626
 JV5626.Superseded values are not recommended for survey control.
 JV5626
 JV5626.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5626.See file dsdata.pdf to determine how the superseded data were derived.
 JV5626
 JV5626_MARKER: DD = SURVEY DISK
 JV5626_SETTING: 0 = UNSPECIFIED SETTING
 JV5626
 JV5626  HISTORY     - Date     Condition        Report By
 JV5626  HISTORY     - 1915     MONUMENTED       USACE
 JV5626  HISTORY     - 1934     GOOD             CGS
 JV5626  HISTORY     - 1954     GOOD             CGS
 JV5626  HISTORY     - 1954     GOOD             CGS
 JV5626
 JV5626                          STATION DESCRIPTION
 JV5626
 JV5626'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1915 (EWE)
 JV5626'STATION IS ON THE WESTERN SIDE OF THE MIDDLE BRANCH OF THE
 JV5626'PATAPSCO RIVER NEAR END OF WESTERN MARYLAND RAILROAD BRIDGE.
 JV5626'
 JV5626'STATION MARKED BY A STANDARD STATION MARK SET IN CONCRETE
 JV5626'MONUMENT WITH TOP FLUSH WITH GROUND.  IT IS 3.246 METERS (10.65
 JV5626'FEET) S OF THE CENTER OF THE SOUTHERNMOST RAIL, 9.45 METERS
 JV5626'(31.00 FEET) W FROM END OF BRIDGE, AND 6.23 METERS (20.44 FEET)
 JV5626'E FROM NEAREST EDGE OF SEMAPHORE.  HARBOR BOARD STATION WABASH, A
 JV5626'6- BY 6-INCH WHITE MARBLE MONUMENT, LOCATED BETWEEN THE TRACKS,
 JV5626'IS 7.874 METERS (25.83 FEET) FROM THE STATION N 43
 JV5626'DEG 08 MIN E.
 JV5626
 JV5626                          STATION RECOVERY (1934)
 JV5626
 JV5626'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5626'STATION FOUND IN GOOD CONDITION.  DESCRIPTION INADEQUATE.  THE
 JV5626'STATION IS LOCATED ON THE RIGHT-OF-WAY OF THE WESTERN MARYLAND
 JV5626'RAILROAD ADJACENT TO THE PROPERTY OF THE CONSOLIDATED GAS AND
 JV5626'ELECTRIC COMPANY OF BALTIMORE 5.65 FEET S OF MOST SOUTHERLY
 JV5626'RAIL, 13.95 FEET N FROM WIRE FENCE OF THE CONSOLIDATED GAS AND
 JV5626'ELECTRIC COMPANY AND 95 FEET FROM THE HIGH-WATER LINE.  THE
 JV5626'STATION IS ALSO 37.7 FEET W OF A LONE SEMAPHORE, LOCATED ON THE
 JV5626'S SIDE OF THE RAILROAD TRACK.
 JV5626
 JV5626                          STATION RECOVERY (1954)
 JV5626
 JV5626'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 JV5626'STATION WAS RECOVERED IN GOOD CONDITION.  DESCRIPTION IS ADEQUATE
 JV5626'WITH THE FOLLOWING ADDITIONS--
 JV5626'
 JV5626'THE STATION IS 68.9 FT. SW OF THE SW CORNER OF THE CONCRETE
 JV5626'BASE OF A SEMAPHORE SIGNAL ON THE N SIDE OF THE RAILROAD TRACK.  THE
 JV5626'SEMAPHORE, MENTIONED IN THE ORIGINAL DESCRIPTION, IS DESTROYED
 JV5626'AND ONLY THE CONCRETE BASE REMAINS.  THE MARK IS ABOUT 12 IN.
 JV5626'BELOW THE SURFACE OF THE GROUND.
 JV5626'
 JV5626'STATION DAVE (U.S.E.) IS 15.5 M. (50.9 FT.) FROM THE STATION
 JV5626'N 86 DEG 42 MIN E.
 JV5626
 JV5626                          STATION RECOVERY (1954)
 JV5626
 JV5626'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (JCC)
 JV5626'TRIANGULATION STATION UNSTAMPED.  RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5575 ***********************************************************************
 JV5575  DESIGNATION -  ELEVATOR 1915
 JV5575  PID         -  JV5575
 JV5575  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5575  COUNTRY     -  US
 JV5575  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5575
 JV5575                         *CURRENT SURVEY CONTROL
 JV5575  ______________________________________________________________________
 JV5575* NAD 83(1991) POSITION- 39 15 39.43904(N) 076 36 25.87164(W)   ADJUSTED
 JV5575* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5575  ______________________________________________________________________
 JV5575  GEOID HEIGHT    -        -32.788 (meters)                     GEOID18
 JV5575  LAPLACE CORR    -         -5.19  (seconds)                    DEFLEC18
 JV5575  HORZ ORDER      -  THIRD
 JV5575
 JV5575.The horizontal coordinates were established by classical geodetic methods
 JV5575.and adjusted by the National Geodetic Survey in January 1992.
 JV5575
 JV5575.The orthometric height was scaled from a topographic map.
 JV5575
 JV5575.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5575.GEOID18 height accuracy estimate available here.
 JV5575
 JV5575.Click photographs - Photos may exist for this station.
 JV5575
 JV5575.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5575
 JV5575. The following values were computed from the NAD 83(1991) position.
 JV5575
 JV5575;                    North         East     Units Scale Factor Converg.
 JV5575;SPC MD       -   177,048.732   433,901.628   MT  0.99997239   +0 14 47.6
 JV5575;SPC MD       -   580,867.38  1,423,558.92   sFT  0.99997239   +0 14 47.6
 JV5575;UTM  18      - 4,346,966.646   361,339.884   MT  0.99983673   -1 01 02.2
 JV5575
 JV5575!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5575!SPC MD       -   1.00000518  x   0.99997239  =   0.99997757
 JV5575!UTM  18      -   1.00000518  x   0.99983673  =   0.99984191
 JV5575
 JV5575:                Primary Azimuth Mark                     Grid Az
 JV5575:SPC MD       -  BALTIMORE WATER WKS STANDPIPE            162 01 42.5
 JV5575:UTM  18      -  BALTIMORE WATER WKS STANDPIPE            163 17 32.3
 JV5575
 JV5575_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6133946966(NAD 83)
 JV5575
 JV5575|---------------------------------------------------------------------|
 JV5575| PID    Reference Object                     Distance      Geod. Az  |
 JV5575|                                                           dddmmss.s |
 JV5575| JV5538 OUR LADY OF CONCEPTION CHURCH       APPROX. 1.5 KM 0555334.6 |
 JV5575| JV5495 BALTIMORE AND OHIO ELEV CUPOLA      APPROX. 2.3 KM 0642118.7 |
 JV5575| JV5671 BALTIMORE WATER WKS STANDPIPE       APPROX. 4.2 KM 1621630.1 |
 JV5575| JV5669 BROOKLYN CHURCH SPIRE               APPROX. 2.6 KM 1792007.7 |
 JV5575| JV5690 YOKELS PARK FLAGSTAFF               APPROX. 2.0 KM 1793219.6 |
 JV5575|---------------------------------------------------------------------|
 JV5575
 JV5575                          SUPERSEDED SURVEY CONTROL
 JV5575
 JV5575  NAD 83(1986)-  39 15 39.43548(N)    076 36 25.88061(W) AD(       ) 3
 JV5575  NAD 27      -  39 15 39.05200(N)    076 36 26.99800(W) AD(       ) 3
 JV5575  USSD        -  39 15 39.41600(N)    076 36 26.83700(W) AD(       ) 3
 JV5575
 JV5575.Superseded values are not recommended for survey control.
 JV5575
 JV5575.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5575.See file dsdata.pdf to determine how the superseded data were derived.
 JV5575
 JV5575
 JV5575  HISTORY     - Date     Condition        Report By
 JV5575  HISTORY     - 1915     MONUMENTED       CGS
 JV5575  HISTORY     - 1924     GOOD             CGS
 JV5575  HISTORY     - 1975     GOOD             NGS
 JV5575
 JV5575                          STATION DESCRIPTION
 JV5575
 JV5575'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5575'STATION IS ON THE NORTHERN SHORE OF PATAPSCO RIVER, N OF THE
 JV5575'ENTRANCE TO THE MIDDLE BRANCH, ON THE ROOF OF THE WESTERN
 JV5575'MARYLAND RAILROAD ELEVATOR.  STATION IS CENTER OF GALVANIZED-IRON
 JV5575'FLAGPOLE, WHICH IS FASTENED SECURELY TO THE CONCRETE ROOF OF THE
 JV5575'BUILDING.
 JV5575
 JV5575                          STATION RECOVERY (1975)
 JV5575
 JV5575'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5575'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3927 ***********************************************************************
 JU3927  DESIGNATION -  ELK
 JU3927  PID         -  JU3927
 JU3927  STATE/COUNTY-  MD/CECIL
 JU3927  COUNTRY     -  US
 JU3927  USGS QUAD   -  NORTH EAST (2016)
 JU3927
 JU3927                         *CURRENT SURVEY CONTROL
 JU3927  ______________________________________________________________________
 JU3927* NAD 83(1991) POSITION- 39 30 18.30924(N) 075 54 01.65473(W)   ADJUSTED
 JU3927* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3927  ______________________________________________________________________
 JU3927  GEOID HEIGHT    -        -33.321 (meters)                     GEOID18
 JU3927  LAPLACE CORR    -         -0.88  (seconds)                    DEFLEC18
 JU3927  HORZ ORDER      -  THIRD
 JU3927
 JU3927.The horizontal coordinates were established by classical geodetic methods
 JU3927.and adjusted by the National Geodetic Survey in January 1992.
 JU3927
 JU3927.The orthometric height was scaled from a topographic map.
 JU3927
 JU3927.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3927.GEOID18 height accuracy estimate available here.
 JU3927
 JU3927.Click photographs - Photos may exist for this station.
 JU3927
 JU3927.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3927
 JU3927. The following values were computed from the NAD 83(1991) position.
 JU3927
 JU3927;                    North         East     Units Scale Factor Converg.
 JU3927;SPC MD       -   204,649.100   494,567.001   MT  1.00001010   +0 41 24.4
 JU3927;SPC MD       -   671,419.59  1,622,591.90   sFT  1.00001010   +0 41 24.4
 JU3927;UTM  18      - 4,373,215.950   422,584.395   MT  0.99967379   -0 34 22.3
 JU3927
 JU3927!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3927!SPC MD       -   1.00000511  x   1.00001010  =   1.00001521
 JU3927!UTM  18      -   1.00000511  x   0.99967379  =   0.99967890
 JU3927
 JU3927:                Primary Azimuth Mark                     Grid Az
 JU3927:SPC MD       -  TOWN PT 2 1898                           257 34 47.4
 JU3927:UTM  18      -  TOWN PT 2 1898                           258 50 34.1
 JU3927
 JU3927_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2258473215(NAD 83)
 JU3927
 JU3927|---------------------------------------------------------------------|
 JU3927| PID    Reference Object                     Distance      Geod. Az  |
 JU3927|                                                           dddmmss.s |
 JU3927| JU3942 TOWN PT 2 1898                      APPROX. 1.3 KM 2581611.8 |
 JU3927|---------------------------------------------------------------------|
 JU3927
 JU3927                          SUPERSEDED SURVEY CONTROL
 JU3927
 JU3927  NAD 83(1986)-  39 30 18.30090(N)    075 54 01.66030(W) AD(       ) 3
 JU3927  NAD 27      -  39 30 17.90600(N)    075 54 02.87300(W) AD(       ) 3
 JU3927  USSD        -  39 30 18.28600(N)    075 54 02.70300(W) AD(       ) 3
 JU3927
 JU3927.Superseded values are not recommended for survey control.
 JU3927
 JU3927.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3927.See file dsdata.pdf to determine how the superseded data were derived.
 JU3927
 JU3927_MARKER: Z = SEE DESCRIPTION
 JU3927_SETTING: 0 = UNSPECIFIED SETTING
 JU3927_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3927
 JU3927  HISTORY     - Date     Condition        Report By
 JU3927  HISTORY     - 1898     MONUMENTED       CGS
 JU3927
 JU3927                          STATION DESCRIPTION
 JU3927
 JU3927'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (JBB)
 JU3927'ON THE S SIDE OF ELK RIVER JUST ABOVE HIGH-WATER MARK 1,325
 JU3927'METERS E BY N FROM TOWN POINT WHARF, AND ABOUT 55 METERS NE
 JU3927'FROM ELK RIVER BOARDING HOUSE.  COULD NOT BE FOUND IN 1902.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1482 ***********************************************************************
 JW1482  DESIGNATION -  ELK LICK
 JW1482  PID         -  JW1482
 JW1482  STATE/COUNTY-  MD/ALLEGANY
 JW1482  COUNTRY     -  US
 JW1482  USGS QUAD   -  EVITTS CREEK (2016)
 JW1482
 JW1482                         *CURRENT SURVEY CONTROL
 JW1482  ______________________________________________________________________
 JW1482* NAD 83(1995) POSITION- 39 40 25.37288(N) 078 42 51.21538(W)   ADJUSTED
 JW1482* NAVD 88 ORTHO HEIGHT -   186.    (meters)      610.    (feet) SCALED
 JW1482  ______________________________________________________________________
 JW1482  GEOID HEIGHT    -        -32.793 (meters)                     GEOID18
 JW1482  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 JW1482  HORZ ORDER      -  SECOND
 JW1482
 JW1482.The horizontal coordinates were established by classical geodetic methods
 JW1482.and adjusted by the National Geodetic Survey in April 1998.
 JW1482
 JW1482.The orthometric height was scaled from a topographic map.
 JW1482
 JW1482.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1482.GEOID18 height accuracy estimate available here.
 JW1482
 JW1482.Click photographs - Photos may exist for this station.
 JW1482
 JW1482.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1482
 JW1482. The following values were computed from the NAD 83(1995) position.
 JW1482
 JW1482;                    North         East     Units Scale Factor Converg.
 JW1482;SPC MD       -   224,183.360   252,922.999   MT  1.00004680   -1 04 33.3
 JW1482;SPC MD       -   735,508.24    829,798.21   sFT  1.00004680   -1 04 33.3
 JW1482;SPC PA S     -    38,246.180   517,267.866   MT  1.00005073   -0 37 32.1
 JW1482;SPC PA S     -   125,479.34  1,697,069.66   sFT  1.00005073   -0 37 32.1
 JW1482;SPC WV N     -   130,597.539   667,413.678   MT  0.99994109   +0 30 04.1
 JW1482;SPC WV N     -   428,468.76  2,189,673.04   sFT  0.99994109   +0 30 04.1
 JW1482;UTM  17      - 4,394,041.076   696,048.150   MT  1.00007321   +1 27 35.0
 JW1482
 JW1482!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1482!SPC MD       -   0.99997599  x   1.00004680  =   1.00002279
 JW1482!SPC PA S     -   0.99997599  x   1.00005073  =   1.00002672
 JW1482!SPC WV N     -   0.99997599  x   0.99994109  =   0.99991708
 JW1482!UTM  17      -   0.99997599  x   1.00007321  =   1.00004920
 JW1482
 JW1482:                Primary Azimuth Mark                     Grid Az
 JW1482:SPC MD       -  ELK LICK AZ MK                           270 14 22.2
 JW1482:SPC PA S     -  ELK LICK AZ MK                           269 47 21.0
 JW1482:SPC WV N     -  ELK LICK AZ MK                           268 39 44.8
 JW1482:UTM  17      -  ELK LICK AZ MK                           267 42 13.9
 JW1482
 JW1482_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9604894041(NAD 83)
 JW1482
 JW1482|---------------------------------------------------------------------|
 JW1482| PID    Reference Object                     Distance      Geod. Az  |
 JW1482|                                                           dddmmss.s |
 JW1482| JW1480 ELK LICK 2                           55.146 METERS 03545     |
 JW1482| CJ9734 ELK LICK RM 1                        20.753 METERS 14844     |
 JW1482| CK8161 UNIDENTIFIED RADIO MAST                            21534     |
 JW1482| CJ9735 ELK LICK RM 2                        23.023 METERS 22909     |
 JW1482| CJ9733 ELK LICK AZ MK                                     2690948.9 |
 JW1482|---------------------------------------------------------------------|
 JW1482
 JW1482                          SUPERSEDED SURVEY CONTROL
 JW1482
 JW1482  NAD 83(1993)-  39 40 25.37234(N)    078 42 51.21707(W) AD(       ) 2
 JW1482  NAD 83(1991)-  39 40 25.37366(N)    078 42 51.21781(W) AD(       ) 2
 JW1482  NAD 83(1986)-  39 40 25.37669(N)    078 42 51.22304(W) AD(       ) 2
 JW1482  NAD 27      -  39 40 25.06400(N)    078 42 52.16200(W) AD(       ) 2
 JW1482
 JW1482.Superseded values are not recommended for survey control.
 JW1482
 JW1482.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1482.See file dsdata.pdf to determine how the superseded data were derived.
 JW1482
 JW1482_MARKER: DS = TRIANGULATION STATION DISK
 JW1482_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1482_STAMPING: ELK LICK 1955
 JW1482_MARK LOGO: CGS
 JW1482_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1482+STABILITY: SURFACE MOTION
 JW1482
 JW1482  HISTORY     - Date     Condition        Report By
 JW1482  HISTORY     - 1955     MONUMENTED       CGS
 JW1482  HISTORY     - 1966     SEE DESCRIPTION  CGS
 JW1482
 JW1482                          STATION DESCRIPTION
 JW1482
 JW1482'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1482'THE STATION IS LOCATED ABOUT 3 MILES NORTHEAST OF THE CENTER OF
 JW1482'CUMBERLAND, 1 MILE NORTH OF WHERE ELK LICK RUN CREEK JOINS EVITTS
 JW1482'CREEK, 0.1 MILE NORTHWEST OF U.S. HIGHWAY 40, 75 FEET EAST OF A
 JW1482'POWERLINE POLE, 12 FEET WEST OF THE CENTER OF A TRACK ROAD,
 JW1482'5 FEET NORTHWEST OF A WHITE 4 IN X 4 IN WITNESS POST, AND ON LAND
 JW1482'OWNED BY MR. JOHN TURANO.
 JW1482'
 JW1482'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 40 AND 220
 JW1482'IN CUMBERLAND, GO NORTHEASTERLY ON U.S. HIGHWAY 40 FOR 2.1 MILES TO
 JW1482'A CONCRETE BRIDGE THAT SPANS EVITTS CREEK, CONTINUE EASTERLY
 JW1482'ON U.S. HIGHWAY 40 FOR 0.4 MILE TO A SIDE ROAD ON THE LEFT AT
 JW1482'A SMALL SCHOOL SHELTER ON THE LEFT, TURN LEFT (NORTH) THEN
 JW1482'RIGHT (NORTHEAST) UP A TRACK ROAD FOR 0.05 MILE TO THE STATION
 JW1482'ON THE LEFT.
 JW1482'
 JW1482'TO REACH THE AZIMUTH MARK FROM THE JUNCTION, GO SOUTHWEST TO
 JW1482'THE HIGHWAY, GO WEST ON THE HIGHWAY FOR 0.7 MILE TO A HIGHWAY
 JW1482'STORAGE LOT ON THE RIGHT AND THE AZIMUTH MARK.
 JW1482'
 JW1482'THE STATION MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED
 JW1482'ELK LICK 1955.
 JW1482'
 JW1482'REFERENCE MARK 1 IS 51 FEET SOUTH OF THE CENTER OF THE TRACK
 JW1482'ROAD.  THE MARK PROJECTS 5 INCHES, AND THE DISK IS STAMPED ELK
 JW1482'LICK NO 1 1955.
 JW1482'
 JW1482'REFERENCE MARK 2 IS 10 FEET WEST OF THE CENTER OF THE TRACK
 JW1482'ROAD, AND 9 FEET SOUTH OF THE POWERLINE POLE.  THE MARK PROJECTS
 JW1482'6 INCHES, AND THE DISK IS STAMPED ELK LICK NO 2 1955.
 JW1482'
 JW1482'THE AZIMUTH MARK IS 210 FEET NORTH OF THE CENTER OF U.S. HIGHWAY
 JW1482'40, AND 3 FEET SOUTH OF A WHITE 4 IN X 4 IN WITNESS POST.  THE MARK
 JW1482'PROJECTS 3 INCHES, AND THE DISK IS STAMPED ELK LICK 1955.
 JW1482'
 JW1482'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JW1482
 JW1482                          STATION RECOVERY (1966)
 JW1482
 JW1482'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (JCB)
 JW1482'STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED AND
 JW1482'FOUND TO BE IN GOOD CONDITION.  THE AZIMUTH MARK WAS REPORTED AS
 JW1482'PREVIOUSLY DESTROYED BY THE STATE HIGHWAY DEPARTMENT.  A SLIGHT
 JW1482'DIFFERENCE WAS FOUND IN THE DISTANCE TO REFERENCE MARK NO. 1.  THE
 JW1482'ANGLE BETWEEN THE TWO REFERENCE MARKS WAS CHECKED AND FOUND TO
 JW1482'BE CORRECT.  UPON REQUEST OF THE STATE HIGHWAY DEPARTMENT A
 JW1482'NEW STATION AND TWO NEW REFERENCE MARKS WERE
 JW1482'ESTABLISHED.  REFERENCE MARKS 1 AND 2 WERE DESTROYED.  THE
 JW1482'STATION WAS LEFT IN PLACE AS IT WAS BEING USED BY SOME OTHER
 JW1482'ORGANIZATION AT THE TIME, BUT WILL BE DESTROYED BY THE
 JW1482'HIGHWAY CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1480 ***********************************************************************
 JW1480  DESIGNATION -  ELK LICK 2
 JW1480  PID         -  JW1480
 JW1480  STATE/COUNTY-  MD/ALLEGANY
 JW1480  COUNTRY     -  US
 JW1480  USGS QUAD   -  EVITTS CREEK (2016)
 JW1480
 JW1480                         *CURRENT SURVEY CONTROL
 JW1480  ______________________________________________________________________
 JW1480* NAD 83(1995) POSITION- 39 40 26.82418(N) 078 42 49.86377(W)   NO CHECK
 JW1480* NAVD 88 ORTHO HEIGHT -   183.    (meters)      600.    (feet) SCALED
 JW1480  ______________________________________________________________________
 JW1480  GEOID HEIGHT    -        -32.793 (meters)                     GEOID18
 JW1480  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 JW1480  HORZ ORDER      -  THIRD
 JW1480
 JW1480.The horizontal coordinates were established by classical geodetic methods
 JW1480.and adjusted by the National Geodetic Survey in April 1998.
 JW1480
 JW1480.No horizontal observational check was made to the station.
 JW1480
 JW1480.The orthometric height was scaled from a topographic map.
 JW1480
 JW1480.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1480.GEOID18 height accuracy estimate available here.
 JW1480
 JW1480.Click photographs - Photos may exist for this station.
 JW1480
 JW1480.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1480
 JW1480. The following values were computed from the NAD 83(1995) position.
 JW1480
 JW1480;                    North         East     Units Scale Factor Converg.
 JW1480;SPC MD       -   224,227.509   252,956.048   MT  1.00004690   -1 04 32.4
 JW1480;SPC MD       -   735,653.09    829,906.63   sFT  1.00004690   -1 04 32.4
 JW1480;UTM  17      - 4,394,086.645   696,079.214   MT  1.00007336   +1 27 36.0
 JW1480
 JW1480!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1480!SPC MD       -   0.99997646  x   1.00004690  =   1.00002336
 JW1480!UTM  17      -   0.99997646  x   1.00007336  =   1.00004982
 JW1480
 JW1480_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9607994086(NAD 83)
 JW1480
 JW1480|---------------------------------------------------------------------|
 JW1480| PID    Reference Object                     Distance      Geod. Az  |
 JW1480|                                                           dddmmss.s |
 JW1480| CJ9736 ELK LICK 2 RM 3                                    05349     |
 JW1480| JW1482 ELK LICK                             55.146 METERS 21545     |
 JW1480| CJ9737 ELK LICK 2 RM 4                                    24701     |
 JW1480|---------------------------------------------------------------------|
 JW1480
 JW1480                          SUPERSEDED SURVEY CONTROL
 JW1480
 JW1480  NAD 83(1991)-  39 40 26.82496(N)    078 42 49.86621(W) AD(       ) 3
 JW1480  NAD 83(1986)-  39 40 26.82798(N)    078 42 49.87143(W) AD(       ) 3
 JW1480  NAD 27      -  39 40 26.51520(N)    078 42 50.81039(W) AD(       ) 3
 JW1480
 JW1480.Superseded values are not recommended for survey control.
 JW1480
 JW1480.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1480.See file dsdata.pdf to determine how the superseded data were derived.
 JW1480
 JW1480_MARKER: DS = TRIANGULATION STATION DISK
 JW1480_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1480_STAMPING: ELK LICK 2 1966
 JW1480_MARK LOGO: CGS
 JW1480_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1480+STABILITY: SURFACE MOTION
 JW1480
 JW1480  HISTORY     - Date     Condition        Report By
 JW1480  HISTORY     - 1966     MONUMENTED       CGS
 JW1480  HISTORY     - 1966     GOOD             CGS
 JW1480
 JW1480                          STATION DESCRIPTION
 JW1480
 JW1480'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (JCB)
 JW1480'STATION IS LOCATED ABOUT 3 MILES NORTHEAST OF THE CENTER OF
 JW1480'CUMBERLAND ALONG THE RIGHT OF WAY OF U.S. HIGHWAY 40 AND ON THE
 JW1480'PROPERTY OF MR. JOHN TURANO.  STATION IS 15 FEET EAST OF A TWIN
 JW1480'PINE TREE, 11 FEET NORTH OF THE HIGHWAY RIGHT OF WAY LINE AND
 JW1480'1 FOOT WEST OF A STEEL WITNESS POST.  THE MARK IS A STANDARD
 JW1480'DISK SET FLUSH IN A CONCRETE MONUMENT ABOUT 10 INCHES IN
 JW1480'DIAMETER, PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED ELK
 JW1480'LICK 2 1966.
 JW1480'
 JW1480'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAYS 40 AND 220
 JW1480'IN CUMBERLAND GO NORTHEASTERLY ON U.S. HIGHWAY 40 FOR 2.5 MILES
 JW1480'TO SIDE ROAD LEFT.  FOLLOW TRACK ROAD NORTHEASTERLY FOR ABOUT 0.15
 JW1480'MILE TO STATION ON LEFT AS DESCRIBED.  A NEW HIGHWAY CUT IS GOING
 JW1480'TO MAKE THE LAST 0.15 MILE OF THE DESCRIPTION OF LITTLE VALUE.
 JW1480'
 JW1480'REFERENCE MARK NO. 3 IS 11 FEET NORTH OF THE RIGHT OF WAY
 JW1480'LINE.  THE MARK IS A STANDARD DISK SET FLUSH IN A CONCRETE
 JW1480'MONUMENT ABOUT 10 INCHES IN DIAMETER, PROJECTS ABOUT 2 INCHES AND
 JW1480'THE DISK IS STAMPED ELK LICK 2 NO 3 1966.
 JW1480'
 JW1480'REFERENCE MARK NO. 4 IS 13 FEET NORTH OF THE RIGHT OF WAY
 JW1480'LINE.  THE MARK IS A STANDARD DISK SET FLUSH IN A CONCRETE
 JW1480'MONUMENT ABOUT 10 INCHES IN DIAMETER, PROJECTS ABOUT 2 INCHES
 JW1480'AND THE DISK IS STAMPED ELK LICK 2 NO 4 1966.
 JW1480
 JW1480                          STATION RECOVERY (1966)
 JW1480
 JW1480'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (JCB)
 JW1480'STATION WAS RECOVERED AND FOUND TO BE IN GOOD CONDITION.  ONE
 JW1480'REFERENCE MARK HAD BEEN DESTROYED BY A UTILITY COMPANY AND THE
 JW1480'OTHER HAD BEEN DESTROYED BY HIGHWAY CONSTRUCTION.  A LARGE SLIDE
 JW1480'OF ROCK AND SOIL HAD OCCURED AT THE CONSTRUCTION SITE AND THERE
 JW1480'WAS NO WAY OF TELLING HOW MUCH THE STATION MAY HAVE BEEN
 JW1480'AFFECTED.  SINCE IT WAS NECESSARY TO MOVE THE STATION AGAIN AND
 JW1480'THE POSITION WAS ALREADY DOUBTFUL THE STATION WAS DESTROYED.
 JW1480'
 JW1480'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JW1480'ABOUT 3.0 MILES NORTHEAST OF CUMBERLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6747 ***********************************************************************
 JV6747  DESIGNATION -  ELKRIDGE
 JV6747  PID         -  JV6747
 JV6747  STATE/COUNTY-  MD/HARFORD
 JV6747  COUNTRY     -  US
 JV6747  USGS QUAD   -  PHOENIX (2016)
 JV6747
 JV6747                         *CURRENT SURVEY CONTROL
 JV6747  ______________________________________________________________________
 JV6747* NAD 83(2011) POSITION- 39 34 32.73803(N) 076 30 59.59035(W)   ADJUSTED
 JV6747* NAD 83(2011) ELLIP HT-   145.830 (meters)        (06/27/12)   ADJUSTED
 JV6747* NAD 83(2011) EPOCH   -  2010.00
 JV6747* NAVD 88 ORTHO HEIGHT -   178.3   (meters)      585.    (feet) VERTCON3
 JV6747  ______________________________________________________________________
 JV6747  GEOID HEIGHT    -        -32.490 (meters)                     GEOID18
 JV6747  NAD 83(2011) X  -  1,147,860.050 (meters)                     COMP
 JV6747  NAD 83(2011) Y  - -4,787,273.654 (meters)                     COMP
 JV6747  NAD 83(2011) Z  -  4,041,883.312 (meters)                     COMP
 JV6747  LAPLACE CORR    -         -2.36  (seconds)                    DEFLEC18
 JV6747
 JV6747  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6747  Standards:
 JV6747         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6747            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6747  -------------------------------------------------------------------
 JV6747  NETWORK    1.75   5.04           0.79   0.57   2.57      0.40119442
 JV6747  -------------------------------------------------------------------
 JV6747  Click here for local accuracies and other accuracy information.
 JV6747
 JV6747.The horizontal coordinates were established by GPS observations
 JV6747.and adjusted by the National Geodetic Survey in June 2012.
 JV6747
 JV6747.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6747.been affixed to the stable North American tectonic plate. See 
 JV6747.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6747
 JV6747.The horizontal coordinates are valid at the epoch date displayed above
 JV6747.which is a decimal equivalence of Year/Month/Day.
 JV6747
 JV6747.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6747.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6747
 JV6747.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6747.GEOID18 height accuracy estimate available here.
 JV6747
 JV6747.Click photographs - Photos may exist for this station.
 JV6747
 JV6747.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6747
 JV6747.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6747
 JV6747.The ellipsoidal height was determined by GPS observations
 JV6747.and is referenced to NAD 83.
 JV6747
 JV6747. The following values were computed from the NAD 83(2011) position.
 JV6747
 JV6747;                    North         East     Units Scale Factor Converg.
 JV6747;SPC MD       -   212,036.416   441,538.580   MT  1.00002442   +0 18 12.3
 JV6747;SPC MD       -   695,656.14  1,448,614.49   sFT  1.00002442   +0 18 12.3
 JV6747;UTM  18      - 4,381,770.903   369,747.055   MT  0.99980888   -0 57 58.8
 JV6747
 JV6747!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6747!SPC MD       -   0.99997712  x   1.00002442  =   1.00000154
 JV6747!UTM  18      -   0.99997712  x   0.99980888  =   0.99978601
 JV6747
 JV6747_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6974781770(NAD 83)
 JV6747
 JV6747                          SUPERSEDED SURVEY CONTROL
 JV6747
 JV6747  NAD 83(2007)-  39 34 32.73816(N)    076 30 59.59113(W) AD(2002.00) 0
 JV6747  ELLIP H (02/10/07)  145.848  (m)                       GP(2002.00)    
 JV6747  ELLIP H (09/18/02)  145.856  (m)                       GP(       ) 4 2
 JV6747  NAD 83(1991)-  39 34 32.73836(N)    076 30 59.58962(W) AD(       ) 1
 JV6747  ELLIP H (01/27/92)  145.855  (m)                       GP(       ) 4 1
 JV6747  NAD 83(1986)-  39 34 32.73140(N)    076 30 59.59616(W) AD(       ) 1
 JV6747  NGVD 29 (06/18/91)  178.6    (m)  UNKNOWN  model used  GPS OBS        
 JV6747
 JV6747.Superseded values are not recommended for survey control.
 JV6747
 JV6747.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6747.See file dsdata.pdf to determine how the superseded data were derived.
 JV6747
 JV6747_MARKER: DD = SURVEY DISK
 JV6747_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6747_STAMPING: 58 ELKRIDGE 1989
 JV6747_MARK LOGO: MD-025
 JV6747_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6747_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6747+STABILITY: SURFACE MOTION
 JV6747_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6747+SATELLITE: SATELLITE OBSERVATIONS - August 02, 2007
 JV6747
 JV6747  HISTORY     - Date     Condition        Report By
 JV6747  HISTORY     - 1989     MONUMENTED       RDA
 JV6747  HISTORY     - 20070802 GOOD             MDSHA
 JV6747
 JV6747                          STATION DESCRIPTION
 JV6747
 JV6747'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6747'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND IN THE
 JV6747'VILLAGE OF TAYLOR.
 JV6747'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 152 AND
 JV6747'STATE HIGHWAY 165 PROCEED NORTHWEST ALONG HIGHWAY 152 1.67 MILES TO
 JV6747'ITS INTERSECTION WITH POCOCK ROAD.  TURN LEFT AND PROCEED NORTHWEST
 JV6747'ALONG POCOCK ROAD 1.25 MILES TO STATION ON THE LEFT.
 JV6747'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6747'ABOUT 1 INCH BELOW GROUND STAMPED 58 ELKRIDGE 1989.  THE STATION IS
 JV6747'19.0 FEET WEST OF THE CENTERLINE OF POCOCK ROAD, 5.2 FEET EAST OF A
 JV6747'BOARD FENCE, AND 9.2 FEET NORTHWEST OF C AND P OF BALTIMORE COUNTY
 JV6747'POLE NUMBER 517063 AND APPROXIMATELY 250.0 FEET SOUTH OF THE
 JV6747'INTERSECTION OF HIGHWAY 146 AND POCOCK ROAD.
 JV6747
 JV6747                          STATION RECOVERY (2007)
 JV6747
 JV6747'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (DCS)
 JV6747'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4353 ***********************************************************************
 JU4353  DESIGNATION -  ELKT
 JU4353  PID         -  JU4353
 JU4353  STATE/COUNTY-  MD/CECIL
 JU4353  COUNTRY     -  US
 JU4353  USGS QUAD   -  ELKTON (2016)
 JU4353
 JU4353                         *CURRENT SURVEY CONTROL
 JU4353  ______________________________________________________________________
 JU4353* NAD 83(2011) POSITION- 39 35 22.55942(N) 075 49 26.16089(W)   ADJUSTED
 JU4353* NAD 83(2011) ELLIP HT-   -10.772 (meters)        (06/27/12)   ADJUSTED
 JU4353* NAD 83(2011) EPOCH   -  2010.00
 JU4353* NAVD 88 ORTHO HEIGHT -    22.4   (meters)       73.    (feet) VERTCON3
 JU4353  ______________________________________________________________________
 JU4353  GEOID HEIGHT    -        -33.175 (meters)                     GEOID18
 JU4353  NAD 83(2011) X  -  1,205,376.333 (meters)                     COMP
 JU4353  NAD 83(2011) Y  - -4,771,982.043 (meters)                     COMP
 JU4353  NAD 83(2011) Z  -  4,042,967.750 (meters)                     COMP
 JU4353  LAPLACE CORR    -          1.36  (seconds)                    DEFLEC18
 JU4353
 JU4353  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4353  Standards:
 JU4353         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4353            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4353  -------------------------------------------------------------------
 JU4353  NETWORK    2.23   2.35           1.03   0.74   1.20     -0.07376571
 JU4353  -------------------------------------------------------------------
 JU4353  Click here for local accuracies and other accuracy information.
 JU4353
 JU4353.The horizontal coordinates were established by GPS observations
 JU4353.and adjusted by the National Geodetic Survey in June 2012.
 JU4353
 JU4353.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4353.been affixed to the stable North American tectonic plate. See 
 JU4353.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4353
 JU4353.The horizontal coordinates are valid at the epoch date displayed above
 JU4353.which is a decimal equivalence of Year/Month/Day.
 JU4353
 JU4353.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU4353.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU4353
 JU4353.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4353.GEOID18 height accuracy estimate available here.
 JU4353
 JU4353.Click photographs - Photos may exist for this station.
 JU4353
 JU4353.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4353
 JU4353.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4353
 JU4353.The ellipsoidal height was determined by GPS observations
 JU4353.and is referenced to NAD 83.
 JU4353
 JU4353. The following values were computed from the NAD 83(2011) position.
 JU4353
 JU4353;                    North         East     Units Scale Factor Converg.
 JU4353;SPC MD       -   214,113.768   501,027.462   MT  1.00002740   +0 44 17.3
 JU4353;SPC MD       -   702,471.59  1,643,787.60   sFT  1.00002740   +0 44 17.3
 JU4353;UTM  18      - 4,382,532.635   429,249.583   MT  0.99966163   -0 31 30.4
 JU4353
 JU4353!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4353!SPC MD       -   1.00000169  x   1.00002740  =   1.00002909
 JU4353!UTM  18      -   1.00000169  x   0.99966163  =   0.99966332
 JU4353
 JU4353_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2924982532(NAD 83)
 JU4353
 JU4353                          SUPERSEDED SURVEY CONTROL
 JU4353
 JU4353  NAD 83(2007)-  39 35 22.55963(N)    075 49 26.16167(W) AD(2002.00) 0
 JU4353  ELLIP H (02/10/07)  -10.735  (m)                       GP(2002.00)    
 JU4353  ELLIP H (08/30/02)  -10.731  (m)                       GP(       ) 4 2
 JU4353  NAD 83(1991)-  39 35 22.56016(N)    075 49 26.16200(W) AD(       ) 1
 JU4353  ELLIP H (12/03/93)  -10.737  (m)                       GP(       ) 4 1
 JU4353  NGVD 29 (12/03/93)   22.7    (m)  GEOID93  model used  GPS OBS        
 JU4353
 JU4353.Superseded values are not recommended for survey control.
 JU4353
 JU4353.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4353.See file dsdata.pdf to determine how the superseded data were derived.
 JU4353
 JU4353_MARKER: A = ALUMINUM MARKER
 JU4353_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4353_STAMPING: ELKT 1993
 JU4353_MARK LOGO: NOS
 JU4353_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JU4353_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4353+STABILITY: SURFACE MOTION
 JU4353_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4353+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2014
 JU4353
 JU4353  HISTORY     - Date     Condition        Report By
 JU4353  HISTORY     - 1993     MONUMENTED       NOS
 JU4353  HISTORY     - 20040325 GOOD             USPSQD
 JU4353  HISTORY     - 20041012 POOR             GEOCAC
 JU4353  HISTORY     - 20140321 GOOD             GEOCAC
 JU4353
 JU4353                          STATION DESCRIPTION
 JU4353
 JU4353'DESCRIBED BY NATIONAL OCEAN SERVICE 1993
 JU4353'THE STATION IS LOCATED AT THE SOUTH EDGE OF THE ELKTON CITY LIMITS ON
 JU4353'THE EAST SIDE OF STATE ROUTE 213.
 JU4353'TO REACH THE STATION FROM THE JUNCTION OF U.S. 40 AND STATE ROUTE 213
 JU4353'IN ELKTON, PROCEED SOUTH ON 213 FOR 0.75 MI (1.21 KM) TO THE STATION
 JU4353'ON THE LEFT IN THE RIGHT OF WAY.
 JU4353'STATION MARK IS A STANDARD NOS ALUMINUM DISK STAMPED ---ELKT 1993---
 JU4353'ATTATCHED TO A 42 IN ALUMINUM ROD DRIVEN INTO THE GROUND AND
 JU4353'SURROUNDED BY A MASS OF CONCRETE FLUSH WITH THE GROUND.  STATION IS
 JU4353'LOCATED 28.80 M (94.49 FT) SSE OF POWE POLE NUMBER 20, 23.30 M
 JU4353'(76.44 FT) NNE OF AN INTERSECTION ROAD SIGN READING WHITE HALL ROAD,
 JU4353'AND 10.90 M (35.76 FT) EAST OF THE EAST EDGE OF STATE ROUTE 213.
 JU4353
 JU4353                          STATION RECOVERY (2004)
 JU4353
 JU4353'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLG)
 JU4353'FOUND MARK SSW OF POLE NUMBER 20, NOT SSE AS IN THE DESCRIPTION.
 JU4353
 JU4353                          STATION RECOVERY (2004)
 JU4353
 JU4353'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JU4353'THE DISK HAS BEEN DAMAGED BY HEAVY EQUIPMENT DURING GRADING OPERATIONS
 JU4353'ALONG THE EAST SIDE OF US HIGHWAY 213.  THE DISK HAS BEEN GOUGED AND
 JU4353'THE LETTERS E AND K HAVE BEEN OBLITERATED, AS HAS THE LAST CHARACTER
 JU4353'OF THE DATE.
 JU4353
 JU4353                          STATION RECOVERY (2014)
 JU4353
 JU4353'RECOVERY NOTE BY GEOCACHING 2014 (MFL)
 JU4353'22 FEET EAST NORTHEAST OF A SIGN SAYING NO THRU TRUCKS, 28 FEET EAST
 JU4353'OF
 JU4353'THE EDGE OF THE ROADWAY. DISK HAS SOME DAMAGE BUT IS READABLE AND
 JU4353'CENTER POINT IS VISIBLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1589 ***********************************************************************
 JU1589  DESIGNATION -  ELKTON
 JU1589  PID         -  JU1589
 JU1589  STATE/COUNTY-  MD/CECIL
 JU1589  COUNTRY     -  US
 JU1589  USGS QUAD   -  ELKTON (2016)
 JU1589
 JU1589                         *CURRENT SURVEY CONTROL
 JU1589  ______________________________________________________________________
 JU1589* NAD 83(1991) POSITION- 39 35 49.18474(N) 075 50 26.14152(W)   ADJUSTED
 JU1589* NAVD 88 ORTHO HEIGHT -     3.431 (meters)       11.26  (feet) ADJUSTED
 JU1589  ______________________________________________________________________
 JU1589  GEOID HEIGHT    -        -33.171 (meters)                     GEOID18
 JU1589  LAPLACE CORR    -          0.99  (seconds)                    DEFLEC18
 JU1589  DYNAMIC HEIGHT  -          3.429 (meters)       11.25  (feet) COMP
 JU1589  MODELED GRAVITY -    980,139.5   (mgal)                       NAVD 88
 JU1589
 JU1589  HORZ ORDER      -  SECOND
 JU1589  VERT ORDER      -  SECOND    CLASS I
 JU1589
 JU1589.The horizontal coordinates were established by classical geodetic methods
 JU1589.and adjusted by the National Geodetic Survey in January 1992.
 JU1589
 JU1589.The orthometric height was determined by differential leveling and
 JU1589.adjusted by the NATIONAL GEODETIC SURVEY
 JU1589.in October 2007.
 JU1589
 JU1589.No vertical observational check was made to the station.
 JU1589
 JU1589.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1589.GEOID18 height accuracy estimate available here.
 JU1589
 JU1589.Click photographs - Photos may exist for this station.
 JU1589
 JU1589.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU1589
 JU1589.The dynamic height is computed by dividing the NAVD 88
 JU1589.geopotential number by the normal gravity value computed on the
 JU1589.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1589.degrees latitude (g = 980.6199 gals.).
 JU1589
 JU1589.The modeled gravity was interpolated from observed gravity values.
 JU1589
 JU1589. The following values were computed from the NAD 83(1991) position.
 JU1589
 JU1589;                    North         East     Units Scale Factor Converg.
 JU1589;SPC MD       -   214,916.563   499,585.858   MT  1.00002902   +0 43 39.7
 JU1589;SPC MD       -   705,105.42  1,639,057.94   sFT  1.00002902   +0 43 39.7
 JU1589;UTM  18      - 4,383,366.714   427,826.551   MT  0.99966413   -0 32 08.9
 JU1589
 JU1589!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU1589!SPC MD       -   1.00000467  x   1.00002902  =   1.00003369
 JU1589!UTM  18      -   1.00000467  x   0.99966413  =   0.99966879
 JU1589
 JU1589:                Primary Azimuth Mark                     Grid Az
 JU1589:SPC MD       -  ELKTON AZ MK                             036 05 37.7
 JU1589:UTM  18      -  ELKTON AZ MK                             037 21 26.3
 JU1589
 JU1589_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2782683366(NAD 83)
 JU1589
 JU1589|---------------------------------------------------------------------|
 JU1589| PID    Reference Object                     Distance      Geod. Az  |
 JU1589|                                                           dddmmss.s |
 JU1589| JU3865 ELKTON PLASTICOID WATER TANK        APPROX. 1.2 KM 0095628.1 |
 JU1589| JU1590 ELKTON RM 1                          35.682 METERS 02909     |
 JU1589| JU3871 ELKTON BRICK STACK                  APPROX. 0.9 KM 0344537.3 |
 JU1589| CB1472 ELKTON AZ MK                                       0364917.4 |
 JU1589| JU3861 ELKTON PRESBYTERIAN CH SPIRE        APPROX. 1.9 KM 0422703.3 |
 JU1589| JU3935 AIRWAY BEACON 63 B                  APPROX. 6.5 KM 2752201.5 |
 JU1589| CB1473 ELKTON RM 2                          22.102 METERS 29219     |
 JU1589| CB1474 ELKTON RM 3 AZIMUTH                                3221944.1 |
 JU1589|---------------------------------------------------------------------|
 JU1589
 JU1589                          SUPERSEDED SURVEY CONTROL
 JU1589
 JU1589  NAD 83(1986)-  39 35 49.17853(N)    075 50 26.14868(W) AD(       ) 2
 JU1589  NAD 27      -  39 35 48.78770(N)    075 50 27.37840(W) AD(       ) 2
 JU1589  NAVD 88 (06/15/91)    3.453  (m)           11.33   (f) SUPERSEDED  2 0
 JU1589  NGVD 29               3.78   (m)           12.4    (f) LEVELING    3  
 JU1589  NGVD 29 (11/26/84)    3.687  (m)           12.10   (f) ADJUSTED    2 0
 JU1589
 JU1589.Superseded values are not recommended for survey control.
 JU1589
 JU1589.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1589.See file dsdata.pdf to determine how the superseded data were derived.
 JU1589
 JU1589_MARKER: DS = TRIANGULATION STATION DISK
 JU1589_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1589_STAMPING: ELKTON 1934
 JU1589_MARK LOGO: CGS
 JU1589_PROJECTION: FLUSH
 JU1589_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU1589_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1589+STABILITY: SURFACE MOTION
 JU1589_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1589+SATELLITE: SATELLITE OBSERVATIONS - October 16, 2025
 JU1589
 JU1589  HISTORY     - Date     Condition        Report By
 JU1589  HISTORY     - 1934     MONUMENTED       CGS
 JU1589  HISTORY     - 1937     GOOD             CGS
 JU1589  HISTORY     - 1958     GOOD             CGS
 JU1589  HISTORY     - 1964     GOOD             CGS
 JU1589  HISTORY     - 1964     GOOD             CGS
 JU1589  HISTORY     - 20060429 GOOD             GEOCAC
 JU1589  HISTORY     - 20070606 GOOD             MDSHA
 JU1589  HISTORY     - 20251016 GOOD             PROFLN
 JU1589
 JU1589                          STATION DESCRIPTION
 JU1589
 JU1589'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 JU1589'THE STATION IS LOCATED ABOUT 1 MILE S OF ELKTON ON ELKTON LANDING,
 JU1589'AT INTERSECTION OF BIG AND LITTLE ELK CREEKS, ON PROPERTY OF
 JU1589'MRS. HELEN MICHAEL.  THE STATION IS 26 FEET W OF CENTER LINE OF
 JU1589'ROAD (LANDING LANE) 23 FEET SSW OF SE CORNER POST OF FENCE AROUND
 JU1589'ESSO COMPANY STORAGE TANKS.  20 PACES NW OF TELEPHONE POLE NO. 6.
 JU1589'
 JU1589'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JU1589'DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 JU1589'
 JU1589'THE STATION MARK PROJECTS 6 INCHES.
 JU1589'
 JU1589'REFERENCE MARK NO. 2 IS 72.67 FEET WNW OF STATION, 2 FEET W OF
 JU1589'FENCE LINE, 15 FEET E OF HIGH-WATER MARK OF CREEK, IN LINE WITH
 JU1589'E SIDE OF MOST WESTERLY GAS TANK.
 JU1589'
 JU1589'REFERENCE MARK NO. 1 IS 117.21 FEET NE OF STATION, 5 PACES E OF
 JU1589'CENTER LINE OF LANDING LANE, 3 FEET S OF TELEPHONE POLE, 21 PACES
 JU1589'N OF CENTER LINE OF BARN-YARD ROAD.
 JU1589'
 JU1589'REFERENCE MARK NO. 3, THE AZIMUTH MARK, IS 0.4 MILE WNW OF
 JU1589'STATION, 16 INCHES S OF E AND W FENCE LINE, 3 PACES N OF CENTER
 JU1589'LINE OF ROAD LEADING ON N SIDE OF GRAVEL PIT, ABOUT 75 YARDS
 JU1589'WNW OF GRAVEL WASHING MACHINE.  THE MARK PROJECTS 6 INCHES AND
 JU1589'IS VISIBLE FROM THE GROUND.
 JU1589'
 JU1589'TO REACH FROM ELKTON AT INTERSECTION OF ROUTES 213 AND 40 AT
 JU1589'TRAFFIC LIGHT FOLLOW ROUTE 40 WESTERLY 0.4 MILE TO LANDING
 JU1589'LANE.  AT ESSO SERVICE STATION AND BLOCK BUILDING TURN LEFT ON
 JU1589'LANDING LANE AND GO 0.6 MILE TO ESSO COMPANY STORAGE TANKS AND
 JU1589'STATION.
 JU1589'
 JU1589'A 90-FOOT TOWER WILL CLEAR ALL LINES.
 JU1589
 JU1589                          STATION RECOVERY (1937)
 JU1589
 JU1589'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU1589'STATION RECOVERED AS DESCRIBED EXCEPT THAT GASOLINE STORAGE TANKS
 JU1589'AS MENTIONED IN THE ORIGINAL DESCRIPTION HAVE BEEN REMOVED AND
 JU1589'REFERENCE MARK NO. 2 IS 30 METERS E OF HIGH-WATER LINE OF CREEK
 JU1589'INSTEAD OF 15 FEET AS GIVEN IN THE ORIGINAL DESCRIPTION.
 JU1589'
 JU1589'ALL MARKS ARE IN GOOD CONDITION.
 JU1589
 JU1589                          STATION RECOVERY (1958)
 JU1589
 JU1589'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU1589'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 JU1589'TO BE IN GOOD CONDITION, EXCEPT THE AZIMUTH MARK WHICH WAS NOT
 JU1589'RECOVERED.
 JU1589'
 JU1589'A NEW AZIMUTH MARK WAS ESTABLISHED.  IT IS 42 FEET SOUTH WEST
 JU1589'OF CENTER LINE OF THE EAST BOUND LANE OF U.S. HIGHWAY 40, 3 FEET
 JU1589'WEST OF WITNESS POST AND 2 FEET SOUTHWEST OF GUARD RAIL FENCE.  THE
 JU1589'MARK IS A STANDARD AZIMUTH MARK DISK WHICH PROJECTS ABOUT 4 INCHES
 JU1589'AND THE DISK IS STAMPED ELKTON 1958.
 JU1589'
 JU1589'A DIFFERENCE WAS FOUND IN THE DIRECTION AND DISTANCE OF BOTH
 JU1589'THE REFERENCE MARKS.
 JU1589'
 JU1589'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JU1589'
 JU1589'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH FOR 0.5
 JU1589'MILE TO U.S. HIGHWAY 40, TURN RIGHT AND GO EAST ON U.S. HIGHWAY 40
 JU1589'FOR 0.2 MILE TO THE MARK ON RIGHT AS DESCRIBED.
 JU1589
 JU1589                          STATION RECOVERY (1964)
 JU1589
 JU1589'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (CFO)
 JU1589'DUE TO THE LOCAL CHANGES IN THE AREA A NEW DESCRIPTION IS AS
 JU1589'FOLLOWS--
 JU1589'
 JU1589'STATION MARK RECOVERED IN GOOD CONDITION IN A SMALL CULTIVATED
 JU1589'AREA, 84 FEET SSW OF CENTER OF PRIVATE GATE ENTRANCE TO THE
 JU1589'PRIVATE PROPERTY, 63 FEET ESE OF SE CORNER OF A LARGE BLOCK OF
 JU1589'CONCRETE 6- BY 2- BY 1.5 FEET HIGH, 48 FEET NE OF THE LONE LARGE
 JU1589'SYCAMORE TREE AND 27 FEET W OF THE CENTERLINE OF THE PRIVATE
 JU1589'ROAD.  THE MARK IS FLUSH WITH THE GROUND AND STAMPED ELKTON
 JU1589'1934.
 JU1589'
 JU1589'REFERENCE MARK NO. 1 IS 35.5 FEET NE OF CENTER OF THE PRIVATE
 JU1589'GATE ENTRANCE, 22.5 FEET E OF THE CENTERLINE OF THE ROAD, 2 FEET
 JU1589'SE OF POWERLINE POLE WITH A TRANSFORMER AND IN AN OLD FENCE LINE
 JU1589'AND ROW OF SHRUBBERY.  THE MARK PROJECTS 3-INCHES AND STAMPED
 JU1589'ELKTON NO 1 1934.
 JU1589'
 JU1589'REFERENCE MARK NO. 2 IS 59 FEET NW OF THE LONE LARGE SYCAMORE
 JU1589'TREE, 6.5 FEET SW OF SW CORNER OF THE LARGE BLOCK OF
 JU1589'CONCRETE.  THE MARK PROJECTS 3 INCHES AND STAMPED ELKTON NO 2 1934.
 JU1589'
 JU1589'THE AZIMUTH MARK ESTABLISHED IN 1958 WAS RECOVERED AS DESCRIBED
 JU1589'AND FOUND TO BE IN GOOD CONDITION.
 JU1589'
 JU1589'THE ORIGINAL DESCRIPTION TO REACH THE STATION AND THE AZIMUTH
 JU1589'MARK IS GOOD.
 JU1589
 JU1589                          STATION RECOVERY (1964)
 JU1589
 JU1589'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JU1589'1 MI S FROM ELKTON.
 JU1589'0.35 MILE WEST ON MAIN STREET FROM THE POST OFFICE IN ELKTON,
 JU1589'THENCE 0.6 MILE SOUTH ON THE ELKTON LANDING ROAD TO END OF THE
 JU1589'PUBLIC ROAD.  84 FEET SOUTH-SOUTHWEST OF THE CENTER OF THE PRIVATE
 JU1589'GATE ENTRANCE, 63 FEET EAST-SOUTHEAST OF THE SOUTHEAST CORNER OF
 JU1589'A LARGE BLOCK OF CONCRETE 6 FEET LONG, 2 FEET WIDE AND 1.5 FEET
 JU1589'HIGH, 48 FEET NORTHEAST OF THE LONE LARGE SYCAMORE TREE AND 27
 JU1589'FEET WEST OF THE CENTERLINE OF THE PRIVATE ROAD.  A STANDARD
 JU1589'TRIANGULATION STATION DISK IN THE TOP OF A CONCRETE MONUMENT
 JU1589'ABOUT FLUSH WITH THE GROUND.
 JU1589
 JU1589                          STATION RECOVERY (2006)
 JU1589
 JU1589'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JU1589'STATION FOUND AS DESCRIBED, JUST INSIDE THE GROUNDS OF ELK LANDING
 JU1589'HISTORIC SITE, AND MARKED BY A SLIM METAL WITNESS POST (WITHOUT A
 JU1589'SIGN).
 JU1589'
 JU1589'TO REACH STATION FROM THE INTERSECTION OF U.S. HWY 40 AND LANDING
 JU1589'LANE, TRAVEL SOUTH ON LANDING LANE ABOUT 0.47 MILES, THROUGH A GATE IN
 JU1589'A CHAIN LINK FENCE TO ELK LANDING AND THE STATION ON THE RIGHT.
 JU1589'
 JU1589'RM 1 (JU1590) FOUND SET IN A SQUARE CONCRETE POST APPROXIMATELY 5.5
 JU1589'FEET SOUTH OF POLE 40362 38049. POLE IS ADJACENT TO AN ELECTRIC BOX
 JU1589'AND IS JUST NORTH OF A CHAIN LINK FENCE AROUND ELK LANDING.
 JU1589'
 JU1589'SCALED COORDINATES WOULD PLACE THIS RM AS SOUTH OF THE MAIN STATION
 JU1589'MARK, IT IS ACTUALLY MORE OR LESS NNE OF THE MARK.
 JU1589'
 JU1589'DID NOT SEARCH FOR RM 2 OR AZ MK.
 JU1589
 JU1589                          STATION RECOVERY (2007)
 JU1589
 JU1589'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JU1589'RECOVERED AS DESCRIBED.
 JU1589
 JU1589                          STATION RECOVERY (2025)
 JU1589
 JU1589'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1589'THE MARK IS IN ELK LANDING HISTORIC PARK, 62 FT (18.9 M) SOUTH OF AN
 JU1589'EAST-WEST CHAIN LINK FENCE THAT LINES UP WITH THE DECORATIVE WROUGHT
 JU1589'IRON GATE, 49 FT (14.9 M) NORTHEAST OF A 60 INCH (152 CM) DOUBLE-TRUNK
 JU1589'SYCAMORE, 38 FT (11.6 M) EAST OF THE EAST EDGE OF WOODS, 27 FT (8.2 M)
 JU1589'WEST OF THE DIRT ENTRANCE ROAD, FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3865 ***********************************************************************
 JU3865  DESIGNATION -  ELKTON PLASTICOID WATER TANK
 JU3865  PID         -  JU3865
 JU3865  STATE/COUNTY-  MD/CECIL
 JU3865  COUNTRY     -  US
 JU3865  USGS QUAD   -  ELKTON (2016)
 JU3865
 JU3865                         *CURRENT SURVEY CONTROL
 JU3865  ______________________________________________________________________
 JU3865* NAD 83(1991) POSITION- 39 36 28.93049(N) 075 50 17.13555(W)   ADJUSTED
 JU3865  ______________________________________________________________________
 JU3865  GEOID HEIGHT    -        -33.149 (meters)                     GEOID18
 JU3865  LAPLACE CORR    -          1.13  (seconds)                    DEFLEC18
 JU3865  HORZ ORDER      -  THIRD
 JU3865
 JU3865.The horizontal coordinates were established by classical geodetic methods
 JU3865.and adjusted by the National Geodetic Survey in January 1992.
 JU3865
 JU3865.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3865.GEOID18 height accuracy estimate available here.
 JU3865
 JU3865.Click photographs - Photos may exist for this station.
 JU3865
 JU3865.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3865
 JU3865. The following values were computed from the NAD 83(1991) position.
 JU3865
 JU3865;                    North         East     Units Scale Factor Converg.
 JU3865;SPC MD       -   216,145.025   499,785.122   MT  1.00003147   +0 43 45.3
 JU3865;SPC MD       -   709,135.80  1,639,711.69   sFT  1.00003147   +0 43 45.3
 JU3865;SPC PA S     -    32,279.390   764,192.892   MT  1.00006678   +1 14 25.6
 JU3865;SPC PA S     -   105,903.30  2,507,189.51   sFT  1.00006678   +1 14 25.6
 JU3865;UTM  18      - 4,384,590.035   428,052.772   MT  0.99966373   -0 32 03.6
 JU3865
 JU3865_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2805284590(NAD 83)
 JU3865
 JU3865                          SUPERSEDED SURVEY CONTROL
 JU3865
 JU3865  NAD 83(1986)-  39 36 28.92442(N)    075 50 17.14250(W) AD(       ) 3
 JU3865  NAD 27      -  39 36 28.53500(N)    075 50 18.37200(W) AD(       ) 3
 JU3865
 JU3865.Superseded values are not recommended for survey control.
 JU3865
 JU3865.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3865.See file dsdata.pdf to determine how the superseded data were derived.
 JU3865
 JU3865_MARKER: 53 = ELEVATED TANK
 JU3865_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3865+SATELLITE: SATELLITE OBSERVATIONS - July 29, 2008
 JU3865
 JU3865  HISTORY     - Date     Condition        Report By
 JU3865  HISTORY     - 1958     FIRST OBSERVED   CGS
 JU3865  HISTORY     - 1983     GOOD             USPSQD
 JU3865  HISTORY     - 1983     GOOD             LOCENG
 JU3865  HISTORY     - 20040313 GOOD             GEOCAC
 JU3865  HISTORY     - 20080729 GOOD             UE
 JU3865
 JU3865                          STATION DESCRIPTION
 JU3865
 JU3865'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3865'STATION IS LOCATED NEAR THE WEST SIDE OF WEST HIGH STREET AND
 JU3865'NEAR THE WEST EDGE OF THE TOWN OF ELKTON, MARYLAND ON THE PROPERTY
 JU3865'OF THE PLASTICOID COMPANY.  IT IS OF STEEL CONSTRUCTION WITH
 JU3865'4 LEGS AND PAINTED SILVER.  THE TANK IS ABOUT 120 FEET HIGH.  THE
 JU3865'POINT INTERSECTED WAS THE BALL FINIAL.
 JU3865
 JU3865                          STATION RECOVERY (1983)
 JU3865
 JU3865'RECOVERY NOTE BY US POWER SQUADRON 1983 (JLM)
 JU3865'AS DESCRIBED OTHERWISE DIRECTIONS OK.
 JU3865
 JU3865                          STATION RECOVERY (1983)
 JU3865
 JU3865'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (GSW)
 JU3865'RECOVERED IN GOOD CONDITION.
 JU3865
 JU3865                          STATION RECOVERY (2004)
 JU3865
 JU3865'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JU3865'RECOVERED IN GOOD CONDITION.
 JU3865
 JU3865                          STATION RECOVERY (2008)
 JU3865
 JU3865'RECOVERY NOTE BY URBAN ENGINEERS INC 2008 (WBF)
 JU3865'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3861 ***********************************************************************
 JU3861  DESIGNATION -  ELKTON PRESBYTERIAN CH SPIRE
 JU3861  PID         -  JU3861
 JU3861  STATE/COUNTY-  MD/CECIL
 JU3861  COUNTRY     -  US
 JU3861  USGS QUAD   -  ELKTON (2016)
 JU3861
 JU3861                         *CURRENT SURVEY CONTROL
 JU3861  ______________________________________________________________________
 JU3861* NAD 83(1991) POSITION- 39 36 34.21696(N) 075 49 32.88080(W)   ADJUSTED
 JU3861  ______________________________________________________________________
 JU3861  GEOID HEIGHT    -        -33.138 (meters)                     GEOID18
 JU3861  LAPLACE CORR    -          1.55  (seconds)                    DEFLEC18
 JU3861  HORZ ORDER      -  THIRD
 JU3861
 JU3861.The horizontal coordinates were established by classical geodetic methods
 JU3861.and adjusted by the National Geodetic Survey in January 1992.
 JU3861
 JU3861.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3861.GEOID18 height accuracy estimate available here.
 JU3861
 JU3861.Click photographs - Photos may exist for this station.
 JU3861
 JU3861.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3861
 JU3861. The following values were computed from the NAD 83(1991) position.
 JU3861
 JU3861;                    North         East     Units Scale Factor Converg.
 JU3861;SPC MD       -   216,321.564   500,838.695   MT  1.00003180   +0 44 13.1
 JU3861;SPC MD       -   709,715.00  1,643,168.29   sFT  1.00003180   +0 44 13.1
 JU3861;SPC PA S     -    32,465.331   765,244.884   MT  1.00006640   +1 14 54.3
 JU3861;SPC PA S     -   106,513.34  2,510,640.92   sFT  1.00006640   +1 14 54.3
 JU3861;UTM  18      - 4,384,743.243   429,109.591   MT  0.99966187   -0 31 35.4
 JU3861
 JU3861_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2910984743(NAD 83)
 JU3861
 JU3861                          SUPERSEDED SURVEY CONTROL
 JU3861
 JU3861  NAD 83(1986)-  39 36 34.21082(N)    075 49 32.88760(W) AD(       ) 3
 JU3861  NAD 27      -  39 36 33.82200(N)    075 49 34.11700(W) AD(       ) 3
 JU3861
 JU3861.Superseded values are not recommended for survey control.
 JU3861
 JU3861.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3861.See file dsdata.pdf to determine how the superseded data were derived.
 JU3861
 JU3861_MARKER: 90 = CHURCH SPIRE
 JU3861_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3861+SATELLITE: SATELLITE OBSERVATIONS - July 29, 2008
 JU3861
 JU3861  HISTORY     - Date     Condition        Report By
 JU3861  HISTORY     - 1958     FIRST OBSERVED   CGS
 JU3861  HISTORY     - 1983     GOOD             USPSQD
 JU3861  HISTORY     - 1983     GOOD             LOCENG
 JU3861  HISTORY     - 20040313 GOOD             GEOCAC
 JU3861  HISTORY     - 20080729 GOOD             UE
 JU3861
 JU3861                          STATION DESCRIPTION
 JU3861
 JU3861'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3861'STATION IS LOCATED ALONG THE NORTH SIDE OF MAIN STREET ABOUT
 JU3861'MIDWAY BETWEEN LOCUST LANE AND SOUTH STREET IN THE TOWN OF
 JU3861'ELKTON, MARYLAND.  THE SPIRE IS ABOUT 50 FEET HIGH.  THE POINT
 JU3861'INTERSECTED WAS THE BALL ON TOP OF THE SPIRE.
 JU3861
 JU3861                          STATION RECOVERY (1983)
 JU3861
 JU3861'RECOVERY NOTE BY US POWER SQUADRON 1983 (JLM)
 JU3861'STATION RECOVERED GOOD.
 JU3861'
 JU3861'THE SPIRE IS ON TOP OF THE ORIGINAL RED BRICK CHURCH CLOSER TO
 JU3861'SOUTH ST.  DIRECTIONS ARE SATISFACTORY.
 JU3861'
 JU3861'THE SPIRE IS A SLATE COVERED OCTAGONAL PYRAMID WITH FOUR
 JU3861'DORMERS.  THE TOP IS A GOLD BALL WITH A WEATHER VANE.
 JU3861
 JU3861                          STATION RECOVERY (1983)
 JU3861
 JU3861'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (GSW)
 JU3861'RECOVERED IN GOOD CONDITION.
 JU3861
 JU3861                          STATION RECOVERY (2004)
 JU3861
 JU3861'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JU3861'RECOVERED IN GOOD CONDITION.
 JU3861
 JU3861                          STATION RECOVERY (2008)
 JU3861
 JU3861'RECOVERY NOTE BY URBAN ENGINEERS INC 2008 (WBF)
 JU3861'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1590 ***********************************************************************
 JU1590  DESIGNATION -  ELKTON RM 1
 JU1590  PID         -  JU1590
 JU1590  STATE/COUNTY-  MD/CECIL
 JU1590  COUNTRY     -  US
 JU1590  USGS QUAD   -  ELKTON (2016)
 JU1590
 JU1590                         *CURRENT SURVEY CONTROL
 JU1590  ______________________________________________________________________
 JU1590* NAD 83(1986) POSITION- 39 35 50.20   (N) 075 50 25.41   (W)   HD_HELD1
 JU1590* NAVD 88 ORTHO HEIGHT -     3.852 (meters)       12.64  (feet) ADJUSTED
 JU1590  ______________________________________________________________________
 JU1590  GEOID HEIGHT    -        -33.170 (meters)                     GEOID18
 JU1590  DYNAMIC HEIGHT  -          3.850 (meters)       12.63  (feet) COMP
 JU1590  MODELED GRAVITY -    980,139.4   (mgal)                       NAVD 88
 JU1590
 JU1590  VERT ORDER      -  SECOND    CLASS I
 JU1590
 JU1590.The horizontal coordinates were determined by differentially corrected
 JU1590.hand held GPS observations or other comparable positioning techniques
 JU1590.and have an estimated accuracy of +/- 3 meters.
 JU1590
 JU1590.The orthometric height was determined by differential leveling and
 JU1590.adjusted by the NATIONAL GEODETIC SURVEY
 JU1590.in June 1991.
 JU1590
 JU1590.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1590.GEOID18 height accuracy estimate available here.
 JU1590
 JU1590.Click photographs - Photos may exist for this station.
 JU1590
 JU1590.The dynamic height is computed by dividing the NAVD 88
 JU1590.geopotential number by the normal gravity value computed on the
 JU1590.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1590.degrees latitude (g = 980.6199 gals.).
 JU1590
 JU1590.The modeled gravity was interpolated from observed gravity values.
 JU1590
 JU1590;                    North         East    Units  Estimated Accuracy
 JU1590;SPC MD       -   214,948.1     499,602.9     MT  (+/- 3 meters HH1 GPS) 
 JU1590
 JU1590_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2784483397(NAD 83)
 JU1590
 JU1590                          SUPERSEDED SURVEY CONTROL
 JU1590
 JU1590  NGVD 29 (11/26/84)    4.085  (m)           13.40   (f) ADJUSTED    2 0
 JU1590
 JU1590.Superseded values are not recommended for survey control.
 JU1590
 JU1590.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1590.See file dsdata.pdf to determine how the superseded data were derived.
 JU1590
 JU1590_MARKER: DR = REFERENCE MARK DISK
 JU1590_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1590_STAMPING: ELKTON NO 1 1934
 JU1590_MARK LOGO: CGS
 JU1590_PROJECTION: PROJECTING 8 CENTIMETERS
 JU1590_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU1590_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1590+STABILITY: SURFACE MOTION
 JU1590_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1590+SATELLITE: SATELLITE OBSERVATIONS - October 16, 2025
 JU1590
 JU1590  HISTORY     - Date     Condition        Report By
 JU1590  HISTORY     - 1934     MONUMENTED       CGS
 JU1590  HISTORY     - 1964     GOOD             CGS
 JU1590  HISTORY     - 20060429 GOOD             GEOCAC
 JU1590  HISTORY     - 20070606 GOOD             MDSHA
 JU1590  HISTORY     - 20110625 GOOD             MAEC
 JU1590  HISTORY     - 20251016 GOOD             PROFLN
 JU1590
 JU1590                          STATION DESCRIPTION
 JU1590
 JU1590'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1590'1 MI S FROM ELKTON.
 JU1590'0.35 MILE WEST ON MAIN STREET FROM THE POST OFFICE AT ELKTON,
 JU1590'THENCE 0.6 MILE SOUTH ON THE ELKTON LANDING ROAD.  35.5 FEET
 JU1590'NORTHEAST OF CENTER OF THE PRIVATE GATE ENTRANCE, 22.5 FEET EAST
 JU1590'OF THE CENTER LINE OF THE ROAD AND 2 FEET SOUTHEAST OF POWER
 JU1590'LINE POLE WITH THE TRANSFORMER.  A STANDARD TRIANGULATION STATION
 JU1590'REFERENCE MARK DISK SET IN THE TOP OF A CONCRETE MONUMENT AND
 JU1590'PROJECTS 3 INCHES.
 JU1590
 JU1590                          STATION RECOVERY (2006)
 JU1590
 JU1590'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JU1590'FOUND AS DESCRIBED EXCEPT MARK IS APPROXIMATELY 5.5 FEET SOUTH OF POLE
 JU1590'40 362 38049.
 JU1590
 JU1590                          STATION RECOVERY (2007)
 JU1590
 JU1590'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JU1590'RECOVERED AS DESCRIBED.
 JU1590
 JU1590                          STATION RECOVERY (2011)
 JU1590
 JU1590'RECOVERY NOTE BY MA ENGINEERING CONSULT INC 2011
 JU1590'RECOVERED IN GOOD CONDITION.
 JU1590
 JU1590                          STATION RECOVERY (2025)
 JU1590
 JU1590'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1590'THE MARK IS IN THE MIDDLE OF THE GRASS TURNAROUND AT THE SOUTH END OF
 JU1590'LANDING ROAD, 46 FT (14.0 M) NORTH OF A POST AND RAIL FENCE THAT RUNS
 JU1590'EAST FROM THE DECORATIVE WROUGHT IRON ENTRANCE GATE, 6 FT (1.8 M)
 JU1590'SOUTH-SOUTHEAST OF UTILITY POLE 40362-38049 WITH TRANSFORMER,
 JU1590'PROJECTING 5 INCHES (13 CM).  THE LINE TO JU1589 ELKTON RUNS THROUGH
 JU1590'THE GATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 CB1473 ***********************************************************************
 CB1473  DESIGNATION -  ELKTON RM 2
 CB1473  PID         -  CB1473
 CB1473  STATE/COUNTY-  MD/CECIL
 CB1473  COUNTRY     -  US
 CB1473  USGS QUAD   -  ELKTON (2016)
 CB1473
 CB1473                         *CURRENT SURVEY CONTROL
 CB1473  ______________________________________________________________________
 CB1473* NAD 83(1986) POSITION- 39 35 49.46   (N) 075 50 27.00   (W)   HD_HELD1
 CB1473* NAVD 88 ORTHO HEIGHT -     3.975 (meters)       13.04  (feet) ADJUSTED
 CB1473  ______________________________________________________________________
 CB1473  GEOID HEIGHT    -        -33.171 (meters)                     GEOID18
 CB1473  DYNAMIC HEIGHT  -          3.973 (meters)       13.03  (feet) COMP
 CB1473  MODELED GRAVITY -    980,139.4   (mgal)                       NAVD 88
 CB1473
 CB1473  VERT ORDER      -  SECOND    CLASS I
 CB1473
 CB1473.The horizontal coordinates were determined by differentially corrected
 CB1473.hand held GPS observations or other comparable positioning techniques
 CB1473.and have an estimated accuracy of +/- 3 meters.
 CB1473
 CB1473.The orthometric height was determined by differential leveling and
 CB1473.adjusted by the NATIONAL GEODETIC SURVEY
 CB1473.in October 2007.
 CB1473
 CB1473.No vertical observational check was made to the station.
 CB1473
 CB1473.Significant digits in the geoid height do not necessarily reflect accuracy.
 CB1473.GEOID18 height accuracy estimate available here.
 CB1473
 CB1473.Click photographs - Photos may exist for this station.
 CB1473
 CB1473.The dynamic height is computed by dividing the NAVD 88
 CB1473.geopotential number by the normal gravity value computed on the
 CB1473.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 CB1473.degrees latitude (g = 980.6199 gals.).
 CB1473
 CB1473.The modeled gravity was interpolated from observed gravity values.
 CB1473
 CB1473;                    North         East    Units  Estimated Accuracy
 CB1473;SPC MD       -   214,924.8     499,565.3     MT  (+/- 3 meters HH1 GPS) 
 CB1473
 CB1473_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2780683375(NAD 83)
 CB1473
 CB1473                          SUPERSEDED SURVEY CONTROL
 CB1473
 CB1473.No superseded survey control is available for this station.
 CB1473
 CB1473_MARKER: DR = REFERENCE MARK DISK
 CB1473_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 CB1473_STAMPING: ELKTON NO 2 1934
 CB1473_MARK LOGO: CGS
 CB1473_PROJECTION: PROJECTING 8 CENTIMETERS
 CB1473_MAGNETIC: N = NO MAGNETIC MATERIAL
 CB1473_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 CB1473+STABILITY: SURFACE MOTION
 CB1473_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 CB1473+SATELLITE: SATELLITE OBSERVATIONS - October 16, 2025
 CB1473
 CB1473  HISTORY     - Date     Condition        Report By
 CB1473  HISTORY     - 1934     MONUMENTED       CGS
 CB1473  HISTORY     - 20070606 GOOD             MDSHA
 CB1473  HISTORY     - 20251016 GOOD             PROFLN
 CB1473
 CB1473                          STATION DESCRIPTION
 CB1473
 CB1473'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 CB1473'THE MARK IS LOCATED ABOUT 12.2 MI (19.63 KM) NORTH-NORTHWEST OF
 CB1473'MIDDLETOWN, 5.4 MI (8.69 KM) EAST OF NORTH EAST AND 0.8 MI (1.29 KM)
 CB1473'SOUTH-SOUTHWEST OF ELKTON.
 CB1473'
 CB1473'TO REACH THE MARK FROM THE POST OFFICE IN ELKTON, PROCEED WEST ON MAIN
 CB1473'STREET FOR 0.35 MILES, (0.56 KM) THENCE 0.6 MILES (1.0 KM) SOUTH ON
 CB1473'ELKTON LANDING ROAD TO THE END OF THE PUBLIC ROAD.
 CB1473'
 CB1473'IT IS SET IN THE TOP OF A 12-IN (30 CM) SQUARE CONCRETE MONUMENT, 59
 CB1473'FEET (18.0 M) WEST OF A LARGE SYCAMORE TREE, 72.5 FEET (22.1 M) WEST
 CB1473'OF THE STATION ELKTON, 6.5 FEET (2.0 M) SOUTHWEST OF THE SOUTHWEST
 CB1473'CORNER OF A LARGE BLOCK OF CONCRETE.
 CB1473
 CB1473                          STATION RECOVERY (2025)
 CB1473
 CB1473'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 CB1473'THE MARK IS IN THICK GREENBRIERS AND WOODS, ABOUT 35 FT (10.7 M) WEST
 CB1473'OF THE EAST EDGE OF THE WOODS, ABOUT 10 FT (3.0 M) SOUTHWEST OF THE
 CB1473'SOUTHWEST CORNER OF THE BIG CONCRETE BLOCK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3874 ***********************************************************************
 JU3874  DESIGNATION -  ELKTON THE ELKTON CO W TANK
 JU3874  PID         -  JU3874
 JU3874  STATE/COUNTY-  MD/CECIL
 JU3874  COUNTRY     -  US
 JU3874  USGS QUAD   -  ELKTON (2016)
 JU3874
 JU3874                         *CURRENT SURVEY CONTROL
 JU3874  ______________________________________________________________________
 JU3874* NAD 83(1991) POSITION- 39 37 10.67957(N) 075 51 18.60531(W)   ADJUSTED
 JU3874  ______________________________________________________________________
 JU3874  GEOID HEIGHT    -        -33.137 (meters)                     GEOID18
 JU3874  LAPLACE CORR    -          0.71  (seconds)                    DEFLEC18
 JU3874  HORZ ORDER      -  THIRD
 JU3874
 JU3874.The horizontal coordinates were established by classical geodetic methods
 JU3874.and adjusted by the National Geodetic Survey in January 1992.
 JU3874
 JU3874.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3874.GEOID18 height accuracy estimate available here.
 JU3874
 JU3874.Click photographs - Photos may exist for this station.
 JU3874
 JU3874.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3874
 JU3874. The following values were computed from the NAD 83(1991) position.
 JU3874
 JU3874;                    North         East     Units Scale Factor Converg.
 JU3874;SPC MD       -   217,414.018   498,302.649   MT  1.00003408   +0 43 06.7
 JU3874;SPC MD       -   713,299.16  1,634,847.94   sFT  1.00003408   +0 43 06.7
 JU3874;SPC PA S     -    33,535.152   762,699.111   MT  1.00006385   +1 13 45.7
 JU3874;SPC PA S     -   110,023.24  2,502,288.67   sFT  1.00006385   +1 13 45.7
 JU3874;UTM  18      - 4,385,890.936   426,599.181   MT  0.99966633   -0 32 43.3
 JU3874
 JU3874_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2659985890(NAD 83)
 JU3874
 JU3874                          SUPERSEDED SURVEY CONTROL
 JU3874
 JU3874  NAD 83(1986)-  39 37 10.67356(N)    075 51 18.61215(W) AD(       ) 3
 JU3874  NAD 27      -  39 37 10.28300(N)    075 51 19.83900(W) AD(       ) 3
 JU3874
 JU3874.Superseded values are not recommended for survey control.
 JU3874
 JU3874.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3874.See file dsdata.pdf to determine how the superseded data were derived.
 JU3874
 JU3874_MARKER: 53 = ELEVATED TANK
 JU3874
 JU3874  HISTORY     - Date     Condition        Report By
 JU3874  HISTORY     - 1958     FIRST OBSERVED   CGS
 JU3874  HISTORY     - 1983     GOOD             USPSQD
 JU3874  HISTORY     - 1983     GOOD             LOCENG
 JU3874  HISTORY     - 20060429 GOOD             GEOCAC
 JU3874
 JU3874                          STATION DESCRIPTION
 JU3874
 JU3874'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3874'STATION IS LOCATED ON THE PROPERTY OF THE ELKTON COMPANY.  IT IS
 JU3874'THE WEST TANK OF TWO.  ABOUT 1.5 MILES NORTHWEST OF THE TOWN OF
 JU3874'ELKTON, MARYLAND.  ABOUT 0.2 MILE WEST OF STATE HIGHWAY 545.  IT
 JU3874'IS OF STEEL CONSTRUCTION WITH FOUR STEEL LEGS.  THE TANK IS ABOUT
 JU3874'110 FEET HIGH AND PAINTED SILVER.  THE POINT INTERSECTED WAS
 JU3874'THE BALL FINIAL.
 JU3874'
 JU3874'STATION MAY BE REACHED BY GOING ABOUT 1.5 MILES NORTHWEST ALONG
 JU3874'STATE HIGHWAY 545 FROM THE JUNCTION OF STATE HIGHWAY 280 AT
 JU3874'ELKTON, THENCE 0.2 MILE WEST ALONG AN ASPHALT ROAD TO TANK ON LEFT.
 JU3874
 JU3874                          STATION RECOVERY (1983)
 JU3874
 JU3874'RECOVERY NOTE BY US POWER SQUADRON 1983 (JLM)
 JU3874'RUSTY STANDPIPE.
 JU3874'BALL FINIAL.
 JU3874'4 LACED-CHANNEL LEGS.
 JU3874'RIVETED TANK.
 JU3874'DIRECTION OK EXCEPT 280 IS 213 NOW.
 JU3874
 JU3874                          STATION RECOVERY (1983)
 JU3874
 JU3874'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (GSW)
 JU3874'THE TANK APPEARS TO BE IN ONLY FAIR CONDITION.
 JU3874'IT IS LOCATED ON THE PROPERTY OF THE TRIUMPH INDUSTRIAL PARK AT
 JU3874'DOG WOOD ROAD ABOUT 3/4 MILE SOUTH OF RTE 545.
 JU3874'
 JU3874'MARCH 17, 1983 AT 0949.
 JU3874
 JU3874                          STATION RECOVERY (2006)
 JU3874
 JU3874'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JU3874'TANK IS LOCATED AT INTERSECTION OF TRIUMPH PARK DRIVE AND TECHNOLOGY
 JU3874'DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3876 ***********************************************************************
 JU3876  DESIGNATION -  ELKTON THE ELKTON CO E TANK
 JU3876  PID         -  JU3876
 JU3876  STATE/COUNTY-  MD/CECIL
 JU3876  COUNTRY     -  US
 JU3876  USGS QUAD   -  ELKTON (2016)
 JU3876
 JU3876                         *CURRENT SURVEY CONTROL
 JU3876  ______________________________________________________________________
 JU3876* NAD 83(1991) POSITION- 39 37 12.36134(N) 075 51 05.64672(W)   ADJUSTED
 JU3876  ______________________________________________________________________
 JU3876  GEOID HEIGHT    -        -33.134 (meters)                     GEOID18
 JU3876  LAPLACE CORR    -          0.84  (seconds)                    DEFLEC18
 JU3876  HORZ ORDER      -  THIRD
 JU3876
 JU3876.The horizontal coordinates were established by classical geodetic methods
 JU3876.and adjusted by the National Geodetic Survey in January 1992.
 JU3876
 JU3876.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3876.GEOID18 height accuracy estimate available here.
 JU3876
 JU3876.Click photographs - Photos may exist for this station.
 JU3876
 JU3876.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3876
 JU3876. The following values were computed from the NAD 83(1991) position.
 JU3876
 JU3876;                    North         East     Units Scale Factor Converg.
 JU3876;SPC MD       -   217,469.765   498,611.066   MT  1.00003419   +0 43 14.9
 JU3876;SPC MD       -   713,482.05  1,635,859.81   sFT  1.00003419   +0 43 14.9
 JU3876;SPC PA S     -    33,593.649   763,007.028   MT  1.00006373   +1 13 54.1
 JU3876;SPC PA S     -   110,215.16  2,503,298.89   sFT  1.00006373   +1 13 54.1
 JU3876;UTM  18      - 4,385,939.849   426,908.638   MT  0.99966577   -0 32 35.0
 JU3876
 JU3876_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2690885939(NAD 83)
 JU3876
 JU3876                          SUPERSEDED SURVEY CONTROL
 JU3876
 JU3876  NAD 83(1986)-  39 37 12.35535(N)    075 51 05.65361(W) AD(       ) 3
 JU3876  NAD 27      -  39 37 11.96500(N)    075 51 06.88100(W) AD(       ) 3
 JU3876
 JU3876.Superseded values are not recommended for survey control.
 JU3876
 JU3876.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3876.See file dsdata.pdf to determine how the superseded data were derived.
 JU3876
 JU3876_MARKER: 53 = ELEVATED TANK
 JU3876
 JU3876  HISTORY     - Date     Condition        Report By
 JU3876  HISTORY     - 1958     FIRST OBSERVED   CGS
 JU3876  HISTORY     - 1983     GOOD             USPSQD
 JU3876  HISTORY     - 1983     GOOD             LOCENG
 JU3876
 JU3876                          STATION DESCRIPTION
 JU3876
 JU3876'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3876'STATION IS LOCATED ON THE PROPERTY OF THE ELKTON COMPANY.  IT IS
 JU3876'THE EAST TANK OF TWO.  IT IS LOCATED ALONG THE WEST SIDE OF
 JU3876'STATE HIGHWAY 545.  IT IS OF STEEL CONSTRUCTION WITH 4 STEEL
 JU3876'LEGS.  THE TANK IS ABOUT 75 FEET HIGH AND PAINTED SILVER.  THE
 JU3876'POINT INTERSECTED WAS THE BALL FINIAL.
 JU3876'
 JU3876'STATION MAY BE REACHED BY GOING 1.4 MILES NORTHWEST ALONG STATE
 JU3876'HIGHWAY 545 FROM ITS JUNCTION WITH STATE HIGHWAY 280 AT ELKTON
 JU3876'TO TANK ON LEFT ABOUT 75 FEET WEST OF THE HIGHWAY.
 JU3876
 JU3876                          STATION RECOVERY (1983)
 JU3876
 JU3876'RECOVERY NOTE BY US POWER SQUADRON 1983 (JLM)
 JU3876'BLUE FINIAL.
 JU3876'4 LACED-CHANNEL LEGS.
 JU3876'NO PRINTING.
 JU3876'COLONIAL METALS ON PROPERTY - LISTED FOR SALE NOW.
 JU3876'DIRECTIONS OK EXCEPT 280 IS 213 NOW.
 JU3876
 JU3876                          STATION RECOVERY (1983)
 JU3876
 JU3876'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (GSW)
 JU3876'TANK LOOKS ONLY IN FAIR CONDITION.
 JU3876'THE LOCATION IS ON THE PROPERTY OF THE TRIUMPH INDUSTRIAL PARK, AT
 JU3876'THE SOUTH WEST CORNER OF RTE 545 AND DOG WOOD ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1849 ***********************************************************************
 HU1849  DESIGNATION -  ELLA
 HU1849  PID         -  HU1849
 HU1849  STATE/COUNTY-  MD/WICOMICO
 HU1849  COUNTRY     -  US
 HU1849  USGS QUAD   -  MONIE (2016)
 HU1849
 HU1849                         *CURRENT SURVEY CONTROL
 HU1849  ______________________________________________________________________
 HU1849* NAD 83(1991) POSITION- 38 14 34.37357(N) 075 52 23.30980(W)   ADJUSTED
 HU1849* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1849  ______________________________________________________________________
 HU1849  GEOID HEIGHT    -        -35.793 (meters)                     GEOID18
 HU1849  LAPLACE CORR    -         -2.36  (seconds)                    DEFLEC18
 HU1849  HORZ ORDER      -  THIRD
 HU1849
 HU1849.The horizontal coordinates were established by classical geodetic methods
 HU1849.and adjusted by the National Geodetic Survey in January 1992.
 HU1849
 HU1849.The orthometric height was scaled from a topographic map.
 HU1849
 HU1849.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1849.GEOID18 height accuracy estimate available here.
 HU1849
 HU1849.Click photographs - Photos may exist for this station.
 HU1849
 HU1849.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1849
 HU1849. The following values were computed from the NAD 83(1991) position.
 HU1849
 HU1849;                    North         East     Units Scale Factor Converg.
 HU1849;SPC MD       -    64,571.428   498,645.946   MT  1.00001043   +0 42 26.1
 HU1849;SPC MD       -   211,848.09  1,635,974.24   sFT  1.00001043   +0 42 26.1
 HU1849;UTM  18      - 4,233,124.179   423,593.324   MT  0.99967190   -0 32 25.8
 HU1849
 HU1849!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1849!SPC MD       -   1.00000566  x   1.00001043  =   1.00001609
 HU1849!UTM  18      -   1.00000566  x   0.99967190  =   0.99967755
 HU1849
 HU1849:                Primary Azimuth Mark                     Grid Az
 HU1849:SPC MD       -  HOLLAND                                  074 39 43.3
 HU1849:UTM  18      -  HOLLAND                                  075 54 35.2
 HU1849
 HU1849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2359333124(NAD 83)
 HU1849
 HU1849|---------------------------------------------------------------------|
 HU1849| PID    Reference Object                     Distance      Geod. Az  |
 HU1849|                                                           dddmmss.s |
 HU1849| HU1856 HOLLAND                             APPROX. 1.9 KM 0752209.4 |
 HU1849|---------------------------------------------------------------------|
 HU1849
 HU1849                          SUPERSEDED SURVEY CONTROL
 HU1849
 HU1849  NAD 83(1986)-  38 14 34.37229(N)    075 52 23.33144(W) AD(       ) 3
 HU1849  NAD 27      -  38 14 33.92700(N)    075 52 24.56700(W) AD(       ) 3
 HU1849  USSD        -  38 14 34.31500(N)    075 52 24.30000(W) AD(       ) 3
 HU1849
 HU1849.Superseded values are not recommended for survey control.
 HU1849
 HU1849.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1849.See file dsdata.pdf to determine how the superseded data were derived.
 HU1849
 HU1849_MARKER: H = DRILL HOLE
 HU1849_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1849_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1849+STABILITY: SURFACE MOTION
 HU1849
 HU1849  HISTORY     - Date     Condition        Report By
 HU1849  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1849  HISTORY     - 1932     MARK NOT FOUND   CGS
 HU1849
 HU1849                          STATION DESCRIPTION
 HU1849
 HU1849'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1849'STATION IS ON THE N SHORE OF WICOMICO RIVER, ON THE MARSH POINT
 HU1849'ON THE E SIDE OF ENTRANCE TO ELLIS BAY, ABOUT 1 FOOT ABOVE
 HU1849'HIGH-WATER MARK.  IT IS ABOUT 10 YARDS BACK FROM SHORE TO W, 20
 HU1849'YARDS BACK FROM SHORE TO S, AND 20 YARDS BACK FROM SHORE TO
 HU1849'N.  STATION MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 HU1849'A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HU1849'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.
 HU1849'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HU1849'POST.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HU1849'ARE AS FOLLOWS--TANGENT OF LAND ON MOLLIES POINT, 1 MILE, S 15
 HU1849'DEG 02 MIN W.  WATCH HOUSE, 1/2 MILE, S 35 DEG 58 MIN W.  CHIMNEY OF
 HU1849'WHITE HOUSE, 2 MILES, N 34 DEG 27 MIN W.  CHIMNEY OF GRAY HOUSE, 2
 HU1849'MILES, N 27 DEG 29 MIN W.  CHIMNEY OF WHITE HOUSE, 200 YARDS, N 79 DEG
 HU1849'15 MIN W.  CHIMNEY ON MIDDLE OF WHITE HOUSE, 1-1/4 MILES, S 75 DEG 44
 HU1849'MIN E.  CHIMNEY ON CREAM AND BROWN HOUSE, 1 MILE, S 59 DEG 23
 HU1849'MIN E.  CHIMNEY ON BROWN HOUSE, 1 MILE, S 59 DEG 09 MIN E.  SMOKE
 HU1849'PIPE OF WATCH HOUSE, 1 MILE, S 43 DEG 15 MIN E.
 HU1849
 HU1849                          STATION RECOVERY (1932)
 HU1849
 HU1849'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1849'NO TRACE OF THIS STATION WAS FOUND AFTER THOROUGH SEARCH, BY FOUR
 HU1849'MEN AT TWO DIFFERENT TIMES.  THE MARSH WAS BURNED AND THE GROUND
 HU1849'DUG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6473 ***********************************************************************
 JV6473  DESIGNATION -  ELLERSLIE AZ MK RESET
 JV6473  PID         -  JV6473
 JV6473  STATE/COUNTY-  MD/HOWARD
 JV6473  COUNTRY     -  US
 JV6473  USGS QUAD   -  WOODBINE (2016)
 JV6473
 JV6473                         *CURRENT SURVEY CONTROL
 JV6473  ______________________________________________________________________
 JV6473* NAD 83(2011) POSITION- 39 18 08.62623(N) 077 01 14.44072(W)   ADJUSTED
 JV6473* NAD 83(2011) ELLIP HT-   156.927 (meters)        (06/27/12)   ADJUSTED
 JV6473* NAD 83(2011) EPOCH   -  2010.00
 JV6473* NAVD 88 ORTHO HEIGHT -   188.78  (meters)      619.4   (feet) N HEIGHT
 JV6473  ______________________________________________________________________
 JV6473  GEOID HEIGHT    -        -31.874 (meters)                     GEOID18
 JV6473  NAD 83(2011) X  -  1,110,026.961 (meters)                     COMP
 JV6473  NAD 83(2011) Y  - -4,815,984.074 (meters)                     COMP
 JV6473  NAD 83(2011) Z  -  4,018,450.527 (meters)                     COMP
 JV6473  LAPLACE CORR    -         -1.69  (seconds)                    DEFLEC18
 JV6473  DYNAMIC HEIGHT  -        188.68  (meters)      619.0   (feet) COMP
 JV6473  MODELED GRAVITY -    980,095.1   (mgal)                       NAVD 88
 JV6473
 JV6473  VERT ORDER      -  THIRD
 JV6473
 JV6473  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6473  Standards:
 JV6473         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6473            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6473  -------------------------------------------------------------------
 JV6473  NETWORK    1.15   2.18           0.52   0.40   1.11      0.08387555
 JV6473  -------------------------------------------------------------------
 JV6473  Click here for local accuracies and other accuracy information.
 JV6473
 JV6473.The horizontal coordinates were established by GPS observations
 JV6473.and adjusted by the National Geodetic Survey in June 2012.
 JV6473
 JV6473.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6473.been affixed to the stable North American tectonic plate. See 
 JV6473.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6473
 JV6473.The horizontal coordinates are valid at the epoch date displayed above
 JV6473.which is a decimal equivalence of Year/Month/Day.
 JV6473
 JV6473.The orthometric height was determined by differential leveling
 JV6473.and adjusted by the NATIONAL GEODETIC SURVEY in August 1994.
 JV6473
 JV6473.The height was determined by precise leveling from only one NSRS
 JV6473.bench mark.  This was not adequate 'tie leveling' to NSRS and was
 JV6473.allowed ONLY to validate the GPS-derived height.
 JV6473
 JV6473.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6473.GEOID18 height accuracy estimate available here.
 JV6473
 JV6473.Click photographs - Photos may exist for this station.
 JV6473
 JV6473.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6473
 JV6473.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6473
 JV6473.The ellipsoidal height was determined by GPS observations
 JV6473.and is referenced to NAD 83.
 JV6473
 JV6473.The dynamic height is computed by dividing the NAVD 88
 JV6473.geopotential number by the normal gravity value computed on the
 JV6473.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6473.degrees latitude (g = 980.6199 gals.).
 JV6473
 JV6473.The modeled gravity was interpolated from observed gravity values.
 JV6473
 JV6473. The following values were computed from the NAD 83(2011) position.
 JV6473
 JV6473;                    North         East     Units Scale Factor Converg.
 JV6473;SPC MD       -   181,576.682   398,216.431   MT  0.99997751   -0 00 46.7
 JV6473;SPC MD       -   595,722.83  1,306,481.74   sFT  0.99997751   -0 00 46.7
 JV6473;UTM  18      - 4,352,281.229   325,765.964   MT  0.99997379   -1 16 48.9
 JV6473
 JV6473!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6473!SPC MD       -   0.99997538  x   0.99997751  =   0.99995289
 JV6473!UTM  18      -   0.99997538  x   0.99997379  =   0.99994917
 JV6473
 JV6473_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2576552281(NAD 83)
 JV6473
 JV6473                          SUPERSEDED SURVEY CONTROL
 JV6473
 JV6473  NAD 83(2007)-  39 18 08.62640(N)    077 01 14.44147(W) AD(2002.00) 0
 JV6473  ELLIP H (02/10/07)  156.954  (m)                       GP(2002.00)    
 JV6473  ELLIP H (08/30/02)  156.954  (m)                       GP(       ) 4 2
 JV6473  NAD 83(1991)-  39 18 08.62625(N)    077 01 14.44159(W) AD(       ) 1
 JV6473  ELLIP H (02/23/93)  156.854  (m)                       GP(       ) 4 2
 JV6473  NAD 83(1991)-  39 18 08.63185(N)    077 01 14.44874(W) AD(       ) 2
 JV6473  NAD 83(1986)-  39 18 08.63049(N)    077 01 14.45991(W) AD(       ) 2
 JV6473  NAD 27      -  39 18 08.25170(N)    077 01 15.54936(W) AD(       ) 2
 JV6473  NGVD 29             188.99   (m)          620.0    (f) LEVELING    3  
 JV6473  NGVD 29 (11/20/87)  188.9    (m)          620.     (f) VERT ANG       
 JV6473
 JV6473.Superseded values are not recommended for survey control.
 JV6473
 JV6473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6473.See file dsdata.pdf to determine how the superseded data were derived.
 JV6473
 JV6473_MARKER: DD = SURVEY DISK
 JV6473_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6473_STAMPING: ELLERSLIE AZ 1961 RESET 1963
 JV6473_MARK LOGO: MDBCSM
 JV6473_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6473_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6473+STABILITY: SURFACE MOTION
 JV6473_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6473+SATELLITE: SATELLITE OBSERVATIONS - June 06, 1992
 JV6473
 JV6473  HISTORY     - Date     Condition        Report By
 JV6473  HISTORY     - 1963     MONUMENTED       MDBCSM
 JV6473  HISTORY     - 1986     GOOD             NGS
 JV6473  HISTORY     - 19910211 GOOD             NGS
 JV6473  HISTORY     - 19920606 GOOD             MD-027
 JV6473  HISTORY     - 20000902 POOR             GEOMET
 JV6473  HISTORY     - 20000905 MARK NOT FOUND   GEOMET
 JV6473
 JV6473                          STATION DESCRIPTION
 JV6473
 JV6473'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (MRM)
 JV6473'THE STATION IS LOCATED ABOUT 2-1/2 KM (1-1/2 MI) SOUTH FROM
 JV6473'COOKSVILLE, 9-1/2 KM (6 MI) NORTH-NORTHWEST FROM SUNSHINE AND 15
 JV6473'KM (9-1/2 MI) NORTHWEST FROM CLARKSVILLE
 JV6473'
 JV6473'OWNERSHIP--ROAD RIGHT OF WAY.
 JV6473'
 JV6473'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 97 AND
 JV6473'144 (FREDERICK ROAD AND GEORGIA AVENUE) IN COOKSVILLE, GO SOUTH ON
 JV6473'STATE HIGHWAY 97 FOR 2.15 KM (1.35 MI) TO STATION ON THE RIGHT.
 JV6473'
 JV6473'THE STATION IS A MARYLAND BUREAU OF CONTROL SURVEY DISK STAMPED--
 JV6473'ELLERSLIE AZ 1961 RESET 1963--SET IN THE TOP OF A 15 CM (6 INCH)
 JV6473'ROUND CONCRETE MONUMENT FLUSH WITH THE SURFACE OF THE GROUND.
 JV6473'
 JV6473'THE STATION IS LOCATED 10.1 M (33 FT) SOUTH FROM THE CENTER OF CARRS
 JV6473'MILLS ROAD, 12.3 M (40.4 FT) WEST FROM THE CENTER OF STATE HIGHWAY
 JV6473'97, 1.5 M (37.6 FT) NORTHWEST FROM A POWERPOLE NUMBERED 465707 29
 JV6473'AND 0.3 M (1 FT) EAST FROM A CARSONITE WITNESS POST.
 JV6473
 JV6473                          STATION RECOVERY (1991)
 JV6473
 JV6473'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV6473'THE STATION IS LOCATED ABOUT 2.17 KM (1.35 MI) SOUTH OF COOKSVILLE,
 JV6473'0.5 KM (0.3 MI) NORTHEAST OF THE GLENWOOD MIDDLE SCHOOL AND ON ROAD
 JV6473'RIGHT-OF-WAY.  MARK SERVES AS AN AZ MK FOR GPS STATION HOBBS.
 JV6473'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 97 (GEORGIA AVENUE)AND
 JV6473'STATE HIGHWAY 144 (FREDERICK ROAD) AT COOKSVILLE, GO SOUTH ON STATE
 JV6473'HIGHWAY 97 (GEORGIA AVENUE) FOR 2.17 KM (1.35 MI) TO THE INTERSECTION
 JV6473'OF STATE HIGHWAY 97, CARRS MILL ROAD AND MCKENDER ROAD AND THE MARKER
 JV6473'ON THE RIGHT IN THE SOUTHWEST ANGLE OF THE INTERSECTION.
 JV6473'THE DISK IS SET IN THE TOP OF A ROUND CONCRETE MONUMENT WHICH IS FLUSH
 JV6473'WITH THE SURFACE OF THE GROUND.  IT IS 10.1 M (33.1 FT) SOUTH OF THE
 JV6473'CENTER OF CARRS MILL ROAD, 12.3 M (40.4 FT) WEST OF THE CENTER OF
 JV6473'STATE HIGHWAY 97, 11.5 M (37.7 FT) NORTH OF A POWERLINE POLE NUMBERED
 JV6473'465770 29 AND 0.3 M (1.0 FT) SOUTH OF A CARSONITE WITNESS POST.
 JV6473
 JV6473                          STATION RECOVERY (1992)
 JV6473
 JV6473'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 1992
 JV6473'RECOVERED IN GOOD CONDITION.
 JV6473
 JV6473                          STATION RECOVERY (2000)
 JV6473
 JV6473'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 JV6473'POSSSIBLY DESTROYED DUE TO INSTALLATION OF TRAFFIC LIGHT.
 JV6473
 JV6473                          STATION RECOVERY (2000)
 JV6473
 JV6473'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 JV6473'PROBABLY DESTROYED DUE TO INSTALLATION OF TRAFFIC LIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5148 ***********************************************************************
 JV5148  DESIGNATION -  ELLIASON
 JV5148  PID         -  JV5148
 JV5148  STATE/COUNTY-  MD/KENT
 JV5148  COUNTRY     -  US
 JV5148  USGS QUAD   -  SWAN POINT (2016)
 JV5148
 JV5148                         *CURRENT SURVEY CONTROL
 JV5148  ______________________________________________________________________
 JV5148* NAD 83(1991) POSITION- 39 09 16.47154(N) 076 15 27.84762(W)   ADJUSTED
 JV5148* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5148  ______________________________________________________________________
 JV5148  GEOID HEIGHT    -        -33.305 (meters)                     GEOID18
 JV5148  LAPLACE CORR    -         -2.08  (seconds)                    DEFLEC18
 JV5148  HORZ ORDER      -  THIRD
 JV5148
 JV5148.The horizontal coordinates were established by classical geodetic methods
 JV5148.and adjusted by the National Geodetic Survey in January 1992.
 JV5148
 JV5148.The orthometric height was scaled from a topographic map.
 JV5148
 JV5148.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5148.GEOID18 height accuracy estimate available here.
 JV5148
 JV5148.Click photographs - Photos may exist for this station.
 JV5148
 JV5148.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5148
 JV5148. The following values were computed from the NAD 83(1991) position.
 JV5148
 JV5148;                    North         East     Units Scale Factor Converg.
 JV5148;SPC MD       -   165,426.780   464,156.402   MT  0.99996165   +0 27 57.1
 JV5148;SPC MD       -   542,737.69  1,522,819.80   sFT  0.99996165   +0 27 57.1
 JV5148;UTM  18      - 4,334,683.421   391,326.058   MT  0.99974542   -0 47 39.2
 JV5148
 JV5148!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5148!SPC MD       -   1.00000526  x   0.99996165  =   0.99996691
 JV5148!UTM  18      -   1.00000526  x   0.99974542  =   0.99975068
 JV5148
 JV5148:                Primary Azimuth Mark                     Grid Az
 JV5148:SPC MD       -  CORR                                     033 29 28.0
 JV5148:UTM  18      -  CORR                                     034 45 04.3
 JV5148
 JV5148_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9132634683(NAD 83)
 JV5148
 JV5148|---------------------------------------------------------------------|
 JV5148| PID    Reference Object                     Distance      Geod. Az  |
 JV5148|                                                           dddmmss.s |
 JV5148| JV5139 CORR                                APPROX. 0.6 KM 0335725.1 |
 JV5148| JV5144 SPIKE                               329.266 METERS 07426     |
 JV5148| JV5143 FORK                                459.357 METERS 1642854.3 |
 JV5148| JV5147 URIE                                404.591 METERS 3591611.0 |
 JV5148|---------------------------------------------------------------------|
 JV5148
 JV5148                          SUPERSEDED SURVEY CONTROL
 JV5148
 JV5148  NAD 83(1986)-  39 09 16.46561(N)    076 15 27.85824(W) AD(       ) 3
 JV5148  NAD 27      -  39 09 16.08400(N)    076 15 29.03400(W) AD(       ) 3
 JV5148  USSD        -  39 09 16.43400(N)    076 15 28.86100(W) AD(       ) 3
 JV5148
 JV5148.Superseded values are not recommended for survey control.
 JV5148
 JV5148.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5148.See file dsdata.pdf to determine how the superseded data were derived.
 JV5148
 JV5148_MARKER: Z = SEE DESCRIPTION
 JV5148_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5148_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5148+STABILITY: SURFACE MOTION
 JV5148
 JV5148  HISTORY     - Date     Condition        Report By
 JV5148  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5148  HISTORY     - 1941     SEE DESCRIPTION  CGS
 JV5148  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5148  HISTORY     - 1990     GOOD             MDDNR
 JV5148
 JV5148                          STATION DESCRIPTION
 JV5148
 JV5148'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5148'ON THE WESTERN SHORE OF SWAN CREEK, ON POINT OF LAND AT N SIDE OF
 JV5148'ENTRANCE TO A SMALL COVE ABOUT 3/4 MILE N OF ROCK HALL LANDING.
 JV5148'STATION IS ABOUT 2 FEET ABOVE HIGH WATER, 16 YARDS W BY N OF
 JV5148'SHORE, 23 YARDS NNW OF SHORE, 30 YARDS NE OF SHORE, AND 33 YARDS
 JV5148'N BY E OF SHORE.  STATION MARK IS MARKED BY A HOLE IN THE CENTER
 JV5148'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 JV5148'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 JV5148'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 JV5148'TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH TILE PIPE BURIED
 JV5148'WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES
 JV5148'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5148'FOLLOWS--WINDMILL AT GRATITUDE, 3/4 MILE, S 6 DEG 40 MIN W.  GILT
 JV5148'BALL ON LIGHTNING ROD, 3/4 MILE, S 9 DEG 31 MIN W.  WEATHER VANE
 JV5148'ON ROCK HALL WHARF HOUSE, 1 MILE, S 14 DEG 51 MIN W.  E CHIMNEY OF
 JV5148'STRONGS HOUSE, 5/8 MILE, S 56 DEG 49 MIN W.  NEAR PEAK OF VERY
 JV5148'LARGE BRICK HOUSE, 3/4 MILE, N 6 DEG 1 MIN W.  S CHIMNEY OF LARGE
 JV5148'HOUSE, 1/2 MILE, N 33 DEG 11 MIN E.  LARGE CHIMNEY OF 2 1/2-STORY
 JV5148'HOUSE, 1 3/8 MILES, N 43 DEG 5 MIN E.  W PEAK OF BARN, 1/2 MILE,
 JV5148'N 74 DEG 50 MIN E.  S CHIMNEY OF HOUSE, 7/8 MILE, S 85 DEG 5 MIN
 JV5148'E.  RIGHT CHIMNEY OF HOUSE, 1-1/4 MILES, S 47 DEG 51 MIN E.  MAIN
 JV5148'CHIMNEY OF HOUSE ON ROCK HALL ROAD, 1-1/4 MILES, S 39 DEG 7 MIN E.
 JV5148'LARGE HOUSE ON ROCK HALL ROAD, 1-1/4 MILES, S 31 DEG 59 MIN E.
 JV5148
 JV5148                          STATION RECOVERY (1941)
 JV5148
 JV5148'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5148'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.  NO BETTER
 JV5148'DESCRIPTION COULD BE GIVEN SO STATION WAS MARKED BY 2 BY 4 STAKE 3
 JV5148'FEET HIGH.
 JV5148
 JV5148                          STATION RECOVERY (1961)
 JV5148
 JV5148'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5148'STATION NOT RECOVERED AFTER A CAREFUL SEARCH.  IT HAS PROBABLY
 JV5148'BEEN DESTROYED EITHER BY EROSION OR FROST ACTION.
 JV5148
 JV5148                          STATION RECOVERY (1990)
 JV5148
 JV5148'RECOVERY NOTE BY MD DEPT OF NAT RES 1990 (LW)
 JV5148'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2108 ***********************************************************************
 HU2108  DESIGNATION -  ELLIOTT
 HU2108  PID         -  HU2108
 HU2108  STATE/COUNTY-  MD/TALBOT
 HU2108  COUNTRY     -  US
 HU2108  USGS QUAD   -  FOWLING CREEK (2017)
 HU2108
 HU2108                         *CURRENT SURVEY CONTROL
 HU2108  ______________________________________________________________________
 HU2108* NAD 83(1991) POSITION- 38 50 10.34387(N) 075 58 30.49550(W)   ADJUSTED
 HU2108* NAVD 88 ORTHO HEIGHT -    17.    (meters)       56.    (feet) SCALED
 HU2108  ______________________________________________________________________
 HU2108  GEOID HEIGHT    -        -34.707 (meters)                     GEOID18
 HU2108  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 HU2108  HORZ ORDER      -  SECOND
 HU2108
 HU2108.The horizontal coordinates were established by classical geodetic methods
 HU2108.and adjusted by the National Geodetic Survey in January 1992.
 HU2108
 HU2108.The orthometric height was scaled from a topographic map.
 HU2108
 HU2108.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2108.GEOID18 height accuracy estimate available here.
 HU2108
 HU2108.Click photographs - Photos may exist for this station.
 HU2108
 HU2108.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2108
 HU2108. The following values were computed from the NAD 83(1991) position.
 HU2108
 HU2108;                    North         East     Units Scale Factor Converg.
 HU2108;SPC MD       -   130,323.233   488,978.155   MT  0.99995009   +0 38 35.7
 HU2108;SPC MD       -   427,568.81  1,604,255.83   sFT  0.99995009   +0 38 35.7
 HU2108;UTM  18      - 4,299,052.177   415,365.906   MT  0.99968820   -0 36 41.5
 HU2108
 HU2108!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2108!SPC MD       -   1.00000282  x   0.99995009  =   0.99995291
 HU2108!UTM  18      -   1.00000282  x   0.99968820  =   0.99969101
 HU2108
 HU2108:                Primary Azimuth Mark                     Grid Az
 HU2108:SPC MD       -  QUEEN RESET                              006 28 18.5
 HU2108:UTM  18      -  QUEEN RESET                              007 43 35.7
 HU2108
 HU2108_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1536599052(NAD 83)
 HU2108
 HU2108|---------------------------------------------------------------------|
 HU2108| PID    Reference Object                     Distance      Geod. Az  |
 HU2108|                                                           dddmmss.s |
 HU2108| HU2752 QUEEN RESET                         APPROX.10.1 KM 0070654.2 |
 HU2108| DC7264 ELLIOTT RM 3                                       0150446.5 |
 HU2108| DC7262 ELLIOTT RM 1                         30.794 METERS 14426     |
 HU2108| HV5647 EASTON WATER TANK                   APPROX.11.4 KM 2261158.9 |
 HU2108| DC7263 ELLIOTT RM 2                         61.679 METERS 26143     |
 HU2108|---------------------------------------------------------------------|
 HU2108
 HU2108                          SUPERSEDED SURVEY CONTROL
 HU2108
 HU2108  NAD 83(1986)-  38 50 10.33963(N)    075 58 30.50905(W) AD(       ) 2
 HU2108  NAD 27      -  38 50 09.93200(N)    075 58 31.73100(W) AD(       ) 2
 HU2108
 HU2108.Superseded values are not recommended for survey control.
 HU2108
 HU2108.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2108.See file dsdata.pdf to determine how the superseded data were derived.
 HU2108
 HU2108_MARKER: DS = TRIANGULATION STATION DISK
 HU2108_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2108_STAMPING: ELLIOTT 1934
 HU2108_MARK LOGO: CGS
 HU2108_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2108+STABILITY: SURFACE MOTION
 HU2108
 HU2108  HISTORY     - Date     Condition        Report By
 HU2108  HISTORY     - 1934     MONUMENTED       CGS
 HU2108  HISTORY     - 1940     GOOD             CGS
 HU2108
 HU2108                          STATION DESCRIPTION
 HU2108
 HU2108'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU2108'THIS SECOND-ORDER STATION IS ABOUT 9 MILES SW OF DENTON, 6 MILES
 HU2108'S OF QUEEN ANNE, 6-3/4 MILES NE OF EASTON (AIR LINE), ON
 HU2108'PROPERTY OF HARRY ELLIOTT.  THE STATION IS 40 FEET W OF
 HU2108'W FARM BUILDINGS, 20 FEET SW OF HOG PEN, 10 FEET S OF WAGON
 HU2108'ROAD.  THE MARK PROJECTS 4 INCHES ABOVE GROUND.
 HU2108'
 HU2108'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HU2108'DISKS SET IN CONCRETE.
 HU2108'
 HU2108'REFERENCE MARK NO.1 IS S OF STATION, 2 FEET W OF CORNER OF
 HU2108'TOOL SHED ON S SIDE OF BARN AT W CORNER.  MARK PROJECTS 4 INCHES
 HU2108'ABOVE GROUND.  REFERENCE MARK NO.2 IS W OF STATION, 1-1/4 FEET
 HU2108'E OF FENCE LINE (N), 6 FEET W OF FARM ROAD.  MARK PROJECTS 4
 HU2108'INCHES ABOVE GROUND.  REFERENCE MARK NO.3 (AZIMUTH MARK) IS N
 HU2108'OF STATION IN S CORNER OF INTERSECTION OF T-ROADS.  IN N CORNER
 HU2108'OF FIELD THAT THE STATION IS IN, 5 PACES SSW OF CENTER LINE OF
 HU2108'MAIN DIRT ROAD AND 7 PACES SSE OF CENTER LINE OF T-ROAD.
 HU2108'MARK PROJECTS 4 INCHES ABOVE GROUND (VISIBLE FROM GROUND).
 HU2108'
 HU2108'TO REACH THE STATION FROM EASTON GO 7.1 MILES FROM THE
 HU2108'INTERSECTION OF GOLDSBOROUGH AND WASHINGTON STREETS ON
 HU2108'GOLDSBOROUGH STREET WHICH IS THE ROAD TO MATHEWS.  AT CROSSROADS
 HU2108'WHERE TELEPHONE LINE TURNS RIGHT, TURN LEFT ON GRAVEL ROAD AND
 HU2108'GO 1.7 MILES TO FARM LANE.  GO 0.1 MILE TO FENCE AROUND FARMHOUSE
 HU2108'OF ELLIOTT AND FOLLOW THE OUTSIDE OF THE FENCE (N SIDE) TO PIG
 HU2108'PEN AT NW CORNER OF CORRAL FENCE, AND STATION.
 HU2108'
 HU2108'A 103-FOOT TOWER WILL CLEAR ALL LINES OBSERVED.
 HU2108'
 HU2108'NO PROMINENT OBJECTS VISIBLE FROM GROUND.
 HU2108
 HU2108                          STATION RECOVERY (1940)
 HU2108
 HU2108'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HU2108'STATION AND REFERENCE MARKS NOS. 1 AND 3 WERE RECOVERED IN GOOD
 HU2108'CONDITION.
 HU2108'
 HU2108'REFERENCE MARK NO.2 WAS NOT FOUND.  IT WAS PROBABLY COVERED BY
 HU2108'A BRUSH PILE.
 HU2108'
 HU2108'ORIGINAL DESCRIPTION IS ADEQUATE EXCEPT THAT THE PROPERTY IS
 HU2108'NO LONGER OCCUPIED BY HARRY ELLIOTT.  PRESENT OWNERS NAME COULD
 HU2108'NOT BE DETERMINED AT THE TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6408 ***********************************************************************
 HV6408  DESIGNATION -  ELLIOTT
 HV6408  PID         -  HV6408
 HV6408  STATE/COUNTY-  MD/DORCHESTER
 HV6408  COUNTRY     -  US
 HV6408  USGS QUAD   -  WINGATE (2016)
 HV6408
 HV6408                         *CURRENT SURVEY CONTROL
 HV6408  ______________________________________________________________________
 HV6408* NAD 83(1991) POSITION- 38 18 33.19736(N) 076 01 01.65351(W)   ADJUSTED
 HV6408* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6408  ______________________________________________________________________
 HV6408  GEOID HEIGHT    -        -35.490 (meters)                     GEOID18
 HV6408  LAPLACE CORR    -         -2.11  (seconds)                    DEFLEC18
 HV6408  HORZ ORDER      -  THIRD
 HV6408
 HV6408.The horizontal coordinates were established by classical geodetic methods
 HV6408.and adjusted by the National Geodetic Survey in January 1992.
 HV6408
 HV6408.The orthometric height was scaled from a topographic map.
 HV6408
 HV6408.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6408.GEOID18 height accuracy estimate available here.
 HV6408
 HV6408.Click photographs - Photos may exist for this station.
 HV6408
 HV6408.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6408
 HV6408. The following values were computed from the NAD 83(1991) position.
 HV6408
 HV6408;                    North         East     Units Scale Factor Converg.
 HV6408;SPC MD       -    71,789.231   485,962.697   MT  0.99999841   +0 37 00.8
 HV6408;SPC MD       -   235,528.50  1,594,362.62   sFT  0.99999841   +0 37 00.8
 HV6408;UTM  18      - 4,240,614.021   411,074.240   MT  0.99969739   -0 37 50.0
 HV6408
 HV6408!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6408!SPC MD       -   1.00000529  x   0.99999841  =   1.00000370
 HV6408!UTM  18      -   1.00000529  x   0.99969739  =   0.99970268
 HV6408
 HV6408:                Primary Azimuth Mark                     Grid Az
 HV6408:SPC MD       -  TODDVILLE METHODIST CH SPIRE             252 33 47.8
 HV6408:UTM  18      -  TODDVILLE METHODIST CH SPIRE             253 48 38.6
 HV6408
 HV6408_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1107440614(NAD 83)
 HV6408
 HV6408|---------------------------------------------------------------------|
 HV6408| PID    Reference Object                     Distance      Geod. Az  |
 HV6408|                                                           dddmmss.s |
 HV6408| HV6411 TODDVILLE METHODIST CH SPIRE        APPROX. 4.7 KM 2531048.6 |
 HV6408|---------------------------------------------------------------------|
 HV6408
 HV6408                          SUPERSEDED SURVEY CONTROL
 HV6408
 HV6408  NAD 83(1986)-  38 18 33.19637(N)    076 01 01.67276(W) AD(       ) 3
 HV6408  NAD 27      -  38 18 32.75700(N)    076 01 02.90300(W) AD(       ) 3
 HV6408  USSD        -  38 18 33.15200(N)    076 01 02.67300(W) AD(       ) 3
 HV6408
 HV6408.Superseded values are not recommended for survey control.
 HV6408
 HV6408.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6408.See file dsdata.pdf to determine how the superseded data were derived.
 HV6408
 HV6408_MARKER: H = DRILL HOLE
 HV6408_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6408_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6408+STABILITY: SURFACE MOTION
 HV6408
 HV6408  HISTORY     - Date     Condition        Report By
 HV6408  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6408  HISTORY     - 1931     GOOD             CGS
 HV6408  HISTORY     - 1942     GOOD             CGS
 HV6408  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6408
 HV6408                          STATION DESCRIPTION
 HV6408
 HV6408'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6408'STATION IS ON THE EASTERN SHORE OF FISHING BAY, ON FISHING POINT,
 HV6408'AT THE EXTREME WESTERN END OF ELLIOTT ISLAND, AND OPPOSITE THE
 HV6408'ENTRANCE TO FARM CREEK, ON SANDY MARSH ABOUT 1 FOOT ABOVE HIGH
 HV6408'WATER, 16 YARDS S OF SHORE, 20 YARDS N OF SHORE, 30 YARDS E-NE
 HV6408'OF EXTREME END OF SANDY POINT, 185 YARDS W-SW OF SAND RIDGE NEAR
 HV6408'TREES AND BRUSH, AND 290 YARDS NW OF A CANNING HOUSE.  STATION
 HV6408'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6408'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6408'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6408'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  THE
 HV6408'SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED
 HV6408'WITH TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES
 HV6408'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6408'FOLLOWS--SMALL HOUSE IN TREE, 2-5/8 MILES, S 39 DEG 30 MIN W.
 HV6408'CHIMNEY ON RIGHT END OF HOUSE, 2 MILES, S 79 DEG 06 MIN W.  TANGENT
 HV6408'OF HIGH BLUFF, 1/4 MILE, N 60 DEG 42 MIN E.  LEFT EDGE OF OLD
 HV6408'BUILDING, S 36 DEG 25 MIN E.  STACK OF CANNING HOUSE AT
 HV6408'ELLIOTT ISLAND, 290 YARDS, S 20 DEG 19 MIN E.
 HV6408
 HV6408                          STATION RECOVERY (1931)
 HV6408
 HV6408'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1931 (EHB)
 HV6408'STATION RECOVERED.  DESCRIPTION IS GOOD, EXCEPT THAT STATION
 HV6408'IS 30 YARDS ESE OF EXTREME SANDY POINT INSTEAD OF 30 YARDS ENE.
 HV6408
 HV6408                          STATION RECOVERY (1942)
 HV6408
 HV6408'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6408'THE FOLLOWING DISCREPANCY WAS NOTED IN THE ORIGINAL DESCRIPTION--
 HV6408'
 HV6408'(1) THE STATION IS 21.3 METERS SE OF THE POINT, 4.6 METERS
 HV6408'S OF THE SHORE, AND 17.7 METERS NE OF THE SHORE INSTEAD OF 30
 HV6408'YARDS ENE OF THE POINT, 16 YARDS S OF THE SHORE AND 20 YARDS N OF
 HV6408'THE SHORE.
 HV6408'
 HV6408'THE STATION IS LOCATED ON THE EASTERN SHORE OF FISHING BAY
 HV6408'ON FISHING POINT, AT THE EXTREME W END OF ELLIOTT ISLAND, ON A
 HV6408'SANDY MARSH, ABOUT 1 FOOT ABOVE HIGH WATER, 21.3 METERS SE OF THE
 HV6408'EDGE OF THE GRASS ON THE POINT, 4.6 METERS S OF THE EDGE OF THE
 HV6408'GRASS ON THE N SIDE OF THE POINT, 17.7 METERS NE OF THE EDGE OF
 HV6408'THE GRASS ON THE SW SIDE OF THE POINT, AND ABOUT 190 METERS N OF
 HV6408'THE OYSTER HOUSE AT THE END OF THE ROAD.
 HV6408'
 HV6408'THE STATION IS A STANDARD MARYLAND SHELL FISH SURVEY CONCRETE
 HV6408'MONUMENT, 8 INCHES SQUARE, WITH A 3/4-INCH HOLE IN THE CENTER
 HV6408'WHICH MARKS THE STATION, SET FLUSH WITH THE GROUND.  THE
 HV6408'STATION IS IN GOOD CONDITION.  NO REFERENCE MARKS WERE SET WHEN
 HV6408'THE STATION WAS ESTABLISHED.
 HV6408
 HV6408                          STATION RECOVERY (1961)
 HV6408
 HV6408'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6408'THE STATION COULD NOT BE RECOVERED AFTER A TWO HOUR SEARCH BY TWO
 HV6408'MEN.  IT IS BELIEVED THAT THE STATION IS STILL IN EXISTANCE BUT
 HV6408'IS BURIED BY SAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6407 ***********************************************************************
 HV6407  DESIGNATION -  ELLIOTT CHURCH
 HV6407  PID         -  HV6407
 HV6407  STATE/COUNTY-  MD/DORCHESTER
 HV6407  COUNTRY     -  US
 HV6407  USGS QUAD   -  WINGATE (2016)
 HV6407
 HV6407                         *CURRENT SURVEY CONTROL
 HV6407  ______________________________________________________________________
 HV6407* NAD 83(1991) POSITION- 38 18 33.58251(N) 076 00 07.23250(W)   ADJUSTED
 HV6407  ______________________________________________________________________
 HV6407  GEOID HEIGHT    -        -35.508 (meters)                     GEOID18
 HV6407  LAPLACE CORR    -         -2.33  (seconds)                    DEFLEC18
 HV6407  HORZ ORDER      -  THIRD
 HV6407
 HV6407.The horizontal coordinates were established by classical geodetic methods
 HV6407.and adjusted by the National Geodetic Survey in January 1992.
 HV6407
 HV6407.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6407.GEOID18 height accuracy estimate available here.
 HV6407
 HV6407.Click photographs - Photos may exist for this station.
 HV6407
 HV6407.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6407
 HV6407. The following values were computed from the NAD 83(1991) position.
 HV6407
 HV6407;                    North         East     Units Scale Factor Converg.
 HV6407;SPC MD       -    71,815.450   487,284.651   MT  0.99999839   +0 37 34.9
 HV6407;SPC MD       -   235,614.52  1,598,699.73   sFT  0.99999839   +0 37 34.9
 HV6407;UTM  18      - 4,240,611.454   412,396.052   MT  0.99969451   -0 37 16.3
 HV6407
 HV6407_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1239640611(NAD 83)
 HV6407
 HV6407                          SUPERSEDED SURVEY CONTROL
 HV6407
 HV6407  NAD 83(1986)-  38 18 33.58146(N)    076 00 07.25201(W) AD(       ) 3
 HV6407  NAD 27      -  38 18 33.14000(N)    076 00 08.49000(W) AD(       ) 3
 HV6407
 HV6407.Superseded values are not recommended for survey control.
 HV6407
 HV6407.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6407.See file dsdata.pdf to determine how the superseded data were derived.
 HV6407
 HV6407_MARKER: 90 = CHURCH SPIRE
 HV6407
 HV6407  HISTORY     - Date     Condition        Report By
 HV6407  HISTORY     - 1932     FIRST OBSERVED   CGS
 HV6407  HISTORY     - 1961     SEE DESCRIPTION  CGS
 HV6407
 HV6407                          STATION DESCRIPTION
 HV6407
 HV6407'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6407'THERE IS A CHURCH AT THE APPROXIMATE POSITION OF THE STATION,
 HV6407'HOWEVER IT COULD NOT BE ASCERTAINED IF IT WAS THE SAME CHURCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1851 ***********************************************************************
 HU1851  DESIGNATION -  ELLIS 2
 HU1851  PID         -  HU1851
 HU1851  STATE/COUNTY-  MD/WICOMICO
 HU1851  COUNTRY     -  US
 HU1851  USGS QUAD   -  MONIE (2016)
 HU1851
 HU1851                         *CURRENT SURVEY CONTROL
 HU1851  ______________________________________________________________________
 HU1851* NAD 83(1991) POSITION- 38 14 35.91021(N) 075 52 12.41474(W)   ADJUSTED
 HU1851* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1851  ______________________________________________________________________
 HU1851  GEOID HEIGHT    -        -35.796 (meters)                     GEOID18
 HU1851  LAPLACE CORR    -         -2.31  (seconds)                    DEFLEC18
 HU1851  HORZ ORDER      -  SECOND
 HU1851
 HU1851.The horizontal coordinates were established by classical geodetic methods
 HU1851.and adjusted by the National Geodetic Survey in January 1992.
 HU1851
 HU1851.The orthometric height was scaled from a topographic map.
 HU1851
 HU1851.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1851.GEOID18 height accuracy estimate available here.
 HU1851
 HU1851.Click photographs - Photos may exist for this station.
 HU1851
 HU1851.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1851
 HU1851. The following values were computed from the NAD 83(1991) position.
 HU1851
 HU1851;                    North         East     Units Scale Factor Converg.
 HU1851;SPC MD       -    64,622.080   498,910.280   MT  1.00001035   +0 42 33.0
 HU1851;SPC MD       -   212,014.27  1,636,841.48   sFT  1.00001035   +0 42 33.0
 HU1851;UTM  18      - 4,233,169.047   423,858.609   MT  0.99967140   -0 32 19.1
 HU1851
 HU1851!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1851!SPC MD       -   1.00000566  x   1.00001035  =   1.00001601
 HU1851!UTM  18      -   1.00000566  x   0.99967140  =   0.99967705
 HU1851
 HU1851:                Primary Azimuth Mark                     Grid Az
 HU1851:SPC MD       -  RAG                                      328 31 04.3
 HU1851:UTM  18      -  RAG                                      329 45 56.4
 HU1851
 HU1851_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2385833169(NAD 83)
 HU1851
 HU1851|---------------------------------------------------------------------|
 HU1851| PID    Reference Object                     Distance      Geod. Az  |
 HU1851|                                                           dddmmss.s |
 HU1851| DC7265 ELLIS 2 RM 1                                       02336     |
 HU1851| HU1857 MT VERNON FLATS UPPER TEMP BCN      APPROX. 1.6 KM 0863208.1 |
 HU1851| HU1850 WINGATE POINT BEACON                APPROX. 1.1 KM 1780946.9 |
 HU1851| HU1904 WICOMICO RIVER BUOY 8               APPROX. 3.2 KM 1893432.0 |
 HU1851| HU1895 LONE                                APPROX. 2.5 KM 2772402.0 |
 HU1851| HU1946 RAG                                 APPROX. 6.4 KM 3291337.3 |
 HU1851|---------------------------------------------------------------------|
 HU1851
 HU1851                          SUPERSEDED SURVEY CONTROL
 HU1851
 HU1851  NAD 83(1986)-  38 14 35.90900(N)    075 52 12.43644(W) AD(       ) 2
 HU1851  NAD 27      -  38 14 35.46700(N)    075 52 13.67600(W) AD(       ) 2
 HU1851
 HU1851.Superseded values are not recommended for survey control.
 HU1851
 HU1851.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1851.See file dsdata.pdf to determine how the superseded data were derived.
 HU1851
 HU1851_MARKER: DS = TRIANGULATION STATION DISK
 HU1851_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1851_STAMPING: ELLIS 2 1932
 HU1851_MARK LOGO: CGS
 HU1851_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1851+STABILITY: SURFACE MOTION
 HU1851
 HU1851  HISTORY     - Date     Condition        Report By
 HU1851  HISTORY     - 1932     MONUMENTED       CGS
 HU1851  HISTORY     - 1936     GOOD             CGS
 HU1851  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1851
 HU1851                          STATION DESCRIPTION
 HU1851
 HU1851'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1851'STATION IS ON THE N SHORE OF THE WICOMICO RIVER, ABOUT 230 METERS
 HU1851'TO THE EASTWARD FROM THE POINT WHICH FORMS THE EASTERN SHORE OF
 HU1851'ELLIS BAY.  THE STATION IS 3 METERS FROM THE EDGE OF THE MARSH
 HU1851'AND 58 METERS TO THE EASTWARD OF A SHACK USED BY FISHERMEN.
 HU1851'
 HU1851'STATION MARK AND REFERENCE MARK ARE STANDARD BRONZE DISKS SET
 HU1851'IN CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HU1851'
 HU1851'HEIGHT OF SIGNAL ABOVE STATION MARK - 6.0 METERS.
 HU1851
 HU1851                          STATION RECOVERY (1936)
 HU1851
 HU1851'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1936 (CES)
 HU1851'LETTER OF MR. C.E. SUMWALT, JR. ENGINEER, WATERVIEW, MD.,
 HU1851'10/30/36--
 HU1851'
 HU1851'THIS STATION IS GETTING SHAKY.
 HU1851'
 HU1851'THE SHACK WHICH IS MENTIONED IN THE RECOVERY DESCRIPTION OF
 HU1851'THIS POINT HAS BEEN MOVED AND IS NOW SOME 200 FEET TO THE E OF
 HU1851'THE MARK INSTEAD OF TO THE W.
 HU1851
 HU1851                          STATION RECOVERY (1942)
 HU1851
 HU1851'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1851'THIS STATION AND REFERENCE MARK WERE THOROUGHLY SEARCHED FOR
 HU1851'BY TWO MEN FOR TWO HOURS.  THE MARKS ARE LOST.  A CONCRETE POST
 HU1851'WITH AN IRON PIPE WAS FOUND IN THE APPROXIMATE LOCATION OF THE
 HU1851'STATION.  THIS POST IS DISCUSSED UNDER HYDROGRAPHIC STATION
 HU1851'ENTITLED E 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1537 ***********************************************************************
 HU1537  DESIGNATION -  ELLPOW ECC MSFC 1929
 HU1537  PID         -  HU1537
 HU1537  STATE/COUNTY-  MD/WORCESTER
 HU1537  COUNTRY     -  US
 HU1537  USGS QUAD   -  BERLIN (2016)
 HU1537
 HU1537                         *CURRENT SURVEY CONTROL
 HU1537  ______________________________________________________________________
 HU1537* NAD 83(1991) POSITION- 38 17 36.96673(N) 075 07 59.69800(W)   ADJUSTED
 HU1537* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1537  ______________________________________________________________________
 HU1537  GEOID HEIGHT    -        -36.095 (meters)                     GEOID18
 HU1537  LAPLACE CORR    -         -0.48  (seconds)                    DEFLEC18
 HU1537  HORZ ORDER      -  THIRD
 HU1537
 HU1537.The horizontal coordinates were established by classical geodetic methods
 HU1537.and adjusted by the National Geodetic Survey in January 1992.
 HU1537
 HU1537.The orthometric height was scaled from a topographic map.
 HU1537
 HU1537.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1537.GEOID18 height accuracy estimate available here.
 HU1537
 HU1537.Click photographs - Photos may exist for this station.
 HU1537
 HU1537.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1537
 HU1537. The following values were computed from the NAD 83(1991) position.
 HU1537
 HU1537;                    North         East     Units Scale Factor Converg.
 HU1537;SPC MD       -    71,262.302   563,294.247   MT  1.00000112   +1 10 17.9
 HU1537;SPC MD       -   233,799.74  1,848,074.54   sFT  1.00000112   +1 10 17.9
 HU1537;UTM  18      - 4,238,399.970   488,347.848   MT  0.99960167   -0 04 57.3
 HU1537
 HU1537!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1537!SPC MD       -   1.00000554  x   1.00000112  =   1.00000666
 HU1537!UTM  18      -   1.00000554  x   0.99960167  =   0.99960721
 HU1537
 HU1537:                Primary Azimuth Mark                     Grid Az
 HU1537:SPC MD       -  FASSETT                                  189 07 24.7
 HU1537:UTM  18      -  FASSETT                                  190 22 39.9
 HU1537
 HU1537_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8834738399(NAD 83)
 HU1537
 HU1537|---------------------------------------------------------------------|
 HU1537| PID    Reference Object                     Distance      Geod. Az  |
 HU1537|                                                           dddmmss.s |
 HU1537| HU1492 TRIPOD                              APPROX. 3.3 KM 0630853.2 |
 HU1537| HU1533 FASSETT                             APPROX. 1.9 KM 1901742.6 |
 HU1537|---------------------------------------------------------------------|
 HU1537
 HU1537                          SUPERSEDED SURVEY CONTROL
 HU1537
 HU1537  NAD 83(1986)-  38 17 36.95057(N)    075 07 59.72849(W) AD(       ) 3
 HU1537  NAD 27      -  38 17 36.53396(N)    075 08 01.05764(W) AD(       ) 3
 HU1537
 HU1537.Superseded values are not recommended for survey control.
 HU1537
 HU1537.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1537.See file dsdata.pdf to determine how the superseded data were derived.
 HU1537
 HU1537_MARKER: H = DRILL HOLE
 HU1537_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1537_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1537+STABILITY: SURFACE MOTION
 HU1537
 HU1537  HISTORY     - Date     Condition        Report By
 HU1537  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1537  HISTORY     - 1929     GOOD             CGS
 HU1537  HISTORY     - 1933     GOOD             CGS
 HU1537  HISTORY     - 1934     GOOD             CGS
 HU1537  HISTORY     - 1942     GOOD             CGS
 HU1537  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1537
 HU1537                          STATION DESCRIPTION
 HU1537
 HU1537'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (CFE)
 HU1537'STATION MARK IS CENTER OF STANDARD MONUMENT OF THE MARYLAND
 HU1537'SHELL FISH SURVEY WHICH PROJECTS 3 TO 5 INCHES ABOVE SURFACE.
 HU1537'
 HU1537'STATION IS MARKED BY THE CENTER OF STANDARD CEMENT MONUMENT
 HU1537'OF THE MARYLAND SHELL FISH SURVEY WHICH IS MADE OF CONCRETE 2
 HU1537'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1537'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1537'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1537'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1537'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1537'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1537'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1537'THE LOCATION OF THE STATION.
 HU1537'THOROFARE WHICH IS SET 7.20 METERS (23.62 FEET) FROM THE STATION
 HU1537'S 83 DEG 48 MIN W.
 HU1537
 HU1537                          STATION RECOVERY (1933)
 HU1537
 HU1537'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (IER)
 HU1537'TRIANGULATION STATION FOUND AS DESCRIBED.  SEE DESCRIPTION FOR
 HU1537'ELLPOW MSFC.
 HU1537
 HU1537                          STATION RECOVERY (1934)
 HU1537
 HU1537'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1537'STATION RECOVERED IN GOOD CONDITION.  THE DESCRIPTION FOR ELLPOW
 HU1537'ECCENTRIC SHOULD READ AS FOLLOWS--
 HU1537'
 HU1537'ON THE WESTERN SHORE OF SINEPUXENT BAY, ABOUT 1/4 MILE INLAND
 HU1537'FROM WHAT IS KNOWN LOCALLY AS POWELL POINT, AND ABOUT 3-1/2 MILES
 HU1537'SW OF OCEAN CITY.  IT IS ON MARSHY GRASSLAND NEAR THE JUNCTION OF
 HU1537'TWO WIRE FENCES ON THE NW SIDE OF THEIR INTERSECTION.  THREE SMALL
 HU1537'CRAB-APPLE TREES ARE GROWING AT THE FENCE INTERSECTION, WHICH IS
 HU1537'ONLY 2.5 METERS FROM THE STATION.  THE LOCATION OF THE MARK IS
 HU1537'KNOWN TO FARMERS OF THE REGION, AND ITS WHEREABOUTS MAY BE
 HU1537'ASCERTAINED BY LOCAL INQUIRY.
 HU1537'
 HU1537'THE STATION IS CENTER OF STANDARD MONUMENT OF THE MARYLAND SHELL
 HU1537'FISH SURVEY, WHICH ORIGINALLY WAS THE REFERENCE MARK FOR THE OLD
 HU1537'STATION ELLPOW, 1908.
 HU1537'
 HU1537'NO REFERENCE MARKS EXIST FOR THIS PRESENT STATION ELLPOW
 HU1537'ECCENTRIC, 1929.
 HU1537
 HU1537                          STATION RECOVERY (1942)
 HU1537
 HU1537'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1537'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HU1537'(1) DELETE THREE SMALL CRAB APPLE TREES ARE GROWING AT THE FENCE
 HU1537'INTERSECTION.  THEY HAVE BEEN REMOVED.
 HU1537'
 HU1537'(2) THE STATION IS 1.1 METERS FROM THE FENCE INTERSECTION, NOT
 HU1537'2.5 METERS.
 HU1537'
 HU1537'THE STATION IS LOCATED ON THE WESTERN SHORE OF SINEPUXENT BAY,
 HU1537'ABOUT 1/4 MILE INLAND FROM WHAT IS LOCALLY KNOWN AS POWELLS POINT,
 HU1537'ABOUT 3-1/2 MILES SW OF OCEAN CITY, AND 3.61 FEET NW OF THE
 HU1537'JUNCTION OF TWO WIRE FENCES.  THE STATION IS MARKED BY A STANDARD
 HU1537'9-INCH SQUARE CONCRETE MONUMENT OF THE MARYLAND SHELL FISH
 HU1537'SURVEY, WITH MSFC - USCS COUNTERSUNK IN THE TOP, AND EXTENDING
 HU1537'3 INCHES ABOVE THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1537
 HU1537                          STATION RECOVERY (1962)
 HU1537
 HU1537'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1537'STATION WAS SEARCHED FOR BY THREE MEN FOR TWO AND ONE HALF HOURS
 HU1537'BUT COULD NOT BE FOUND.  THE LOCATION OF THE STATION APPEARS TO BE
 HU1537'IN THE CENTER OF A NEW DRAINAGE DITCH.  THE STATION WAS PROBABLY
 HU1537'EITHER DUG UP OR COVERED OVER IN THE CONSTRUCTION OF THE DRAINAGE
 HU1537'DITCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1538 ***********************************************************************
 HU1538  DESIGNATION -  ELLPOW MSFC 1908
 HU1538  PID         -  HU1538
 HU1538  STATE/COUNTY-  MD/WORCESTER
 HU1538  COUNTRY     -  US
 HU1538  USGS QUAD   -  BERLIN (2016)
 HU1538
 HU1538                         *CURRENT SURVEY CONTROL
 HU1538  ______________________________________________________________________
 HU1538* NAD 83(1991) POSITION- 38 17 36.99191(N) 075 07 59.40413(W)   ADJUSTED
 HU1538* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1538  ______________________________________________________________________
 HU1538  GEOID HEIGHT    -        -36.095 (meters)                     GEOID18
 HU1538  LAPLACE CORR    -         -0.48  (seconds)                    DEFLEC18
 HU1538  HORZ ORDER      -  THIRD
 HU1538
 HU1538.The horizontal coordinates were established by classical geodetic methods
 HU1538.and adjusted by the National Geodetic Survey in January 1992.
 HU1538
 HU1538.The orthometric height was scaled from a topographic map.
 HU1538
 HU1538.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1538.GEOID18 height accuracy estimate available here.
 HU1538
 HU1538.Click photographs - Photos may exist for this station.
 HU1538
 HU1538.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1538
 HU1538. The following values were computed from the NAD 83(1991) position.
 HU1538
 HU1538;                    North         East     Units Scale Factor Converg.
 HU1538;SPC MD       -    71,263.224   563,301.371   MT  1.00000112   +1 10 18.1
 HU1538;SPC MD       -   233,802.76  1,848,097.91   sFT  1.00000112   +1 10 18.1
 HU1538;UTM  18      - 4,238,400.736   488,354.988   MT  0.99960167   -0 04 57.1
 HU1538
 HU1538!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1538!SPC MD       -   1.00000554  x   1.00000112  =   1.00000666
 HU1538!UTM  18      -   1.00000554  x   0.99960167  =   0.99960721
 HU1538
 HU1538:                Primary Azimuth Mark                     Grid Az
 HU1538:SPC MD       -  SHORE                                    149 11 52.2
 HU1538:UTM  18      -  SHORE                                    150 27 07.4
 HU1538
 HU1538_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8835438400(NAD 83)
 HU1538
 HU1538|---------------------------------------------------------------------|
 HU1538| PID    Reference Object                     Distance      Geod. Az  |
 HU1538|                                                           dddmmss.s |
 HU1538| HU1509 SHORE                               APPROX. 2.7 KM 1502210.3 |
 HU1538| HU1537 ELLPOW ECC MSFC 1929                  7.183 METERS 26348     |
 HU1538|---------------------------------------------------------------------|
 HU1538
 HU1538                          SUPERSEDED SURVEY CONTROL
 HU1538
 HU1538  NAD 83(1986)-  38 17 36.97575(N)    075 07 59.43460(W) AD(       ) 3
 HU1538  NAD 27      -  38 17 36.55920(N)    075 08 00.76309(W) AD(       ) 3
 HU1538  USSD        -  38 17 36.72900(N)    075 08 00.55900(W) AD(       ) 3
 HU1538
 HU1538.Superseded values are not recommended for survey control.
 HU1538
 HU1538.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1538.See file dsdata.pdf to determine how the superseded data were derived.
 HU1538
 HU1538_MARKER: N = NAIL
 HU1538_SETTING: 0 = UNSPECIFIED SETTING
 HU1538_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1538
 HU1538  HISTORY     - Date     Condition        Report By
 HU1538  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1538  HISTORY     - 1929     MARK NOT FOUND   CGS
 HU1538  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1538
 HU1538                          STATION DESCRIPTION
 HU1538
 HU1538'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1538'ON THE WESTERN SHORE OF SINEPUXENT BAY, ABOUT 1/4 MILE INLAND FROM
 HU1538'WHAT IS KNOWN LOCALLY AS POWELL POINT AND ABOUT 3-1/2 MILES SW
 HU1538'OF OCEAN CITY, ON MARSHY GRASSLAND, NEAR A PROPERTY LINE INDICATED
 HU1538'BY CRAB-APPLE TREES AND A WIRE FENCE WHICH RUNS FROM BAY TO
 HU1538'CRAB-APPLE TREES AND JOINS A SNAKE FENCE.  STATION MARKED BY NAIL
 HU1538'IN PINE STUB FLUSH WITH THE GROUND.
 HU1538'
 HU1538'REFERENCE MARK IS CENTER OF STANDARD MONUMENT OF THE MARYLAND
 HU1538'SHELL FISH SURVEY WHICH PROJECTS 3 TO 5 INCHES ABOVE SURFACE
 HU1538'WHICH IS MADE OF CONCRETE 2
 HU1538'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1538'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1538'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1538'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1538'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1538'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1538'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1538'THE LOCATION OF THE STATION.
 HU1538'THOROFARE WHICH IS SET 7.20 METERS (23.62 FEET) FROM THE STATION
 HU1538'S 83 DEG 48 MIN W.
 HU1538'
 HU1538'OTHER DISTANCES AND AZIMUTHS ARE AS FOLLOWS--CHIMNEY OF HENRYS
 HU1538'BRICK HOUSE, 1-7/8 MILES, S 20 DEG 18 MIN W.  CHIMNEY ON RIGHT SIDE
 HU1538'OF FOUR-SIDED ROOF OF COFFIN HOTEL, 1/4 MILE, S 70 DEG 16 MIN W.
 HU1538'CHIMNEY ON LEFT END OF ROOF OF HASTINGSS HOUSE, 1/4 MILE,
 HU1538'N 36 DEG 14 MIN W.  BAKERS WINDMILL, 1-3/8 MILES, N 34 DEG 11 MIN E.
 HU1538'CHIMNEY OF BUFFINGTONS HOUSE, 1-7/8 MILES, N 36 DEG 30 MIN E.
 HU1538
 HU1538                          STATION RECOVERY (1929)
 HU1538
 HU1538'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (CFE)
 HU1538'THE PINE STUB MARKING THE STATION COULD NOT BE FOUND.  THE
 HU1538'REFERENCE MARK WAS RECOVERED IN GOOD CONDITION.  IT IS NEAR THE
 HU1538'JUNCTION OF TWO WIRE FENCES AND THE SITE IS MARKED BY THREE SMALL
 HU1538'CRAB-APPLE TREES.  THE LOCATION OF THE MARK IS KNOWN TO THE
 HU1538'FARMERS OF THAT LOCALITY AND ITS WHEREABOUTS CAN BE ASCERTAINED
 HU1538'BY LOCAL INQUIRY.  THE REFERENCE MARK WAS OCCUPIED.
 HU1538
 HU1538                          STATION RECOVERY (1962)
 HU1538
 HU1538'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1538'THE STATION WAS A PINE STUB AND COULD NOT BE FOUND IN 1929 OR BY
 HU1538'THIS PARTY.
 HU1538'
 HU1538'STATION LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0829 ***********************************************************************
 JV0829  DESIGNATION -  ELM
 JV0829  PID         -  JV0829
 JV0829  STATE/COUNTY-  MD/HOWARD
 JV0829  COUNTRY     -  US
 JV0829  USGS QUAD   -  SYKESVILLE (2016)
 JV0829
 JV0829                         *CURRENT SURVEY CONTROL
 JV0829  ______________________________________________________________________
 JV0829* NAD 83(1991) POSITION- 39 18 36.11313(N) 076 53 16.00496(W)   ADJUSTED
 JV0829* NAVD 88 ORTHO HEIGHT -   155.708 (meters)      510.85  (feet) ADJUSTED
 JV0829  ______________________________________________________________________
 JV0829  GEOID HEIGHT    -        -32.061 (meters)                     GEOID18
 JV0829  LAPLACE CORR    -         -3.28  (seconds)                    DEFLEC18
 JV0829  DYNAMIC HEIGHT  -        155.626 (meters)      510.58  (feet) COMP
 JV0829  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 JV0829
 JV0829  HORZ ORDER      -  SECOND
 JV0829  VERT ORDER      -  SECOND    CLASS 0
 JV0829
 JV0829.The horizontal coordinates were established by classical geodetic methods
 JV0829.and adjusted by the National Geodetic Survey in January 1992.
 JV0829
 JV0829.The orthometric height was determined by differential leveling and
 JV0829.adjusted by the NATIONAL GEODETIC SURVEY
 JV0829.in June 1991.
 JV0829
 JV0829.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0829.GEOID18 height accuracy estimate available here.
 JV0829
 JV0829.Click photographs - Photos may exist for this station.
 JV0829
 JV0829.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0829
 JV0829.The dynamic height is computed by dividing the NAVD 88
 JV0829.geopotential number by the normal gravity value computed on the
 JV0829.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0829.degrees latitude (g = 980.6199 gals.).
 JV0829
 JV0829.The modeled gravity was interpolated from observed gravity values.
 JV0829
 JV0829. The following values were computed from the NAD 83(1991) position.
 JV0829
 JV0829;                    North         East     Units Scale Factor Converg.
 JV0829;SPC MD       -   182,430.086   409,678.511   MT  0.99997851   +0 04 13.6
 JV0829;SPC MD       -   598,522.71  1,344,086.91   sFT  0.99997851   +0 04 13.6
 JV0829;UTM  18      - 4,352,880.972   337,243.786   MT  0.99992616   -1 11 46.3
 JV0829
 JV0829!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0829!SPC MD       -   0.99998060  x   0.99997851  =   0.99995911
 JV0829!UTM  18      -   0.99998060  x   0.99992616  =   0.99990676
 JV0829
 JV0829:                Primary Azimuth Mark                     Grid Az
 JV0829:SPC MD       -  ELM AZ MK                                083 19 01.8
 JV0829:UTM  18      -  ELM AZ MK                                084 35 01.7
 JV0829
 JV0829_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3724352880(NAD 83)
 JV0829
 JV0829|---------------------------------------------------------------------|
 JV0829| PID    Reference Object                     Distance      Geod. Az  |
 JV0829|                                                           dddmmss.s |
 JV0829| JV6039 RANDALLSTOWN RAD WBAL CEN MAST      APPROX.12.3 KM 0534000.6 |
 JV0829| JV0831 ELM AZ MK                                          0832315.4 |
 JV0829| JV0830 ELM RM 1                             30.672 METERS 18634     |
 JV0829| JV0828 ELM RM 2                             22.996 METERS 27705     |
 JV0829|---------------------------------------------------------------------|
 JV0829
 JV0829                          SUPERSEDED SURVEY CONTROL
 JV0829
 JV0829  NAD 83(1986)-  39 18 36.11139(N)    076 53 16.01337(W) AD(       ) 2
 JV0829  NAD 27      -  39 18 35.73231(N)    076 53 17.09656(W) AD(       ) 2
 JV0829  NGVD 29             155.92   (m)          511.5    (f) LEVELING    3  
 JV0829  NGVD 29 (11/26/84)  155.924  (m)          511.56   (f) ADJUSTED    2 0
 JV0829
 JV0829.Superseded values are not recommended for survey control.
 JV0829
 JV0829.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0829.See file dsdata.pdf to determine how the superseded data were derived.
 JV0829
 JV0829_MARKER: DS = TRIANGULATION STATION DISK
 JV0829_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0829_STAMPING: ELM 1958
 JV0829_MARK LOGO: CGS
 JV0829_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0829+STABILITY: SURFACE MOTION
 JV0829
 JV0829  HISTORY     - Date     Condition        Report By
 JV0829  HISTORY     - 1958     MONUMENTED       CGS
 JV0829  HISTORY     - 1958     GOOD             CGS
 JV0829  HISTORY     - 1975     GOOD             NGS
 JV0829  HISTORY     - 19990114 MARK NOT FOUND   MDSHA
 JV0829
 JV0829                          STATION DESCRIPTION
 JV0829
 JV0829'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0829'THE STATION IS LOCATED ABOUT 6 MILES SOUTHWEST OF THE CENTER
 JV0829'OF SYKESVILLE, ABOUT 5.5 MILES NORTHWEST OF ELLICOTT CITY AND
 JV0829'0.5 MILE SOUTH OF STATE HIGHWAY 99.  IT IS 11 FEET SOUTH OF RAIL
 JV0829'FENCE, 24-1/2 FEET NORTHEAST OF THE CENTER OF THE SHARP TURN IN
 JV0829'GRAVEL ROAD AND 5-1/2 FEET WEST OF FENCE LINE.  THE MARK PROJECTS
 JV0829'ABOUT 2 INCHES AND THE DISK IS STAMPED ELM 1958.
 JV0829'
 JV0829'R.M. NO. 1 IS 6-1/2 FEET WEST OF CENTER OF GRAVEL ROAD AND 1 FOOT
 JV0829'EAST OF FENCE LINE.  THE MARK PROJECTS ABOUT 2 INCHES AND THE
 JV0829'DISK IS STAMPED ELM NO 1 1958.
 JV0829'
 JV0829'R.M. NO. 2 IS 5 FEET NORTH OF CENTER OF GRAVEL ROAD AND 6 INCHES
 JV0829'SOUTH OF RAIL FENCE.  THE MARK PROJECTS ABOUT 4 INCHES AND THE
 JV0829'DISK IS STAMPED ELM NO 2 1958.
 JV0829'
 JV0829'AZIMUTH MARK IS 27 FEET NORTH OF CENTER OF STATE HIGHWAY 99
 JV0829'AND 2 FEET EAST-SOUTHEAST OF WITNESS POST.  THE MARK PROJECTS
 JV0829'ABOUT 3 INCHES AND THE DISK IS STAMPED ELM 1958.
 JV0829'
 JV0829'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 40 AND
 JV0829'29, ABOUT 1.0 MILE NORTHWEST OF ELLICOTT CITY.  GO WEST ON
 JV0829'U.S. HIGHWAY 40 FOR 4.7 MILES TO CROSSROADS, TURN RIGHT AND GO
 JV0829'NORTH ON MARRIOTTSVILLE ROAD FOR 1.4 MILES TO STATE HIGHWAY 99,
 JV0829'TURN RIGHT AND GO EAST ON STATE HIGHWAY 99 FOR 0.5 MILE TO A
 JV0829'NARROW GRAVEL ROAD RIGHT.  TURN RIGHT AND GO SOUTH ON NARROW
 JV0829'GRAVEL ROAD FOR 0.5 MILE, TURN LEFT AND GO EAST ON GRAVEL ROAD
 JV0829'FOR 0.15 MILE TO FENCE CORNER AND STATION ON LEFT AT POINT WHERE
 JV0829'GRAVEL ROAD MAKE A SHARP RIGHT TURN.
 JV0829'
 JV0829'HEIGHT OF LIGHT ABOVE STATION MARK 33 METERS.
 JV0829
 JV0829                          STATION RECOVERY (1958)
 JV0829
 JV0829'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV0829'7.3 MI NW FROM ELLICOTT CITY.
 JV0829'4.7 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION OF
 JV0829'U.S. HIGHWAY 29 AT ELLICOTT CITY, THENCE 1.4 MILES NORTH ALONG
 JV0829'THE MARRIOTTSVILLE ROAD, THENCE 0.5 MILE EAST ALONG STATE HIGHWAY
 JV0829'99, THENCE 0.6 MILE SOUTH ALONG A GRAVELED DRIVEWAY, THENCE 0.1
 JV0829'MILE EAST ALONG A GRAVELED DRIVEWAY, AT A SHARP TURN IN THE
 JV0829'ROAD, ABOUT 150 FEET SOUTHEAST OF A FRAME HOUSE, 24 1/2 FEET
 JV0829'NORTHEAST OF THE CENTER LINE OF THE ROAD, 11 1/2 FEET SOUTH OF A
 JV0829'RAIL FENCE, 5 FEET WEST OF A WIRE FENCE, SET IN THE TOP OF A
 JV0829'CONCRETE POST PROJECTING 3 INCHES ABOVE THE GROUND AND ABOUT 1
 JV0829'FOOT BELOW THE LEVEL OF THE ROAD.
 JV0829
 JV0829                          STATION RECOVERY (1975)
 JV0829
 JV0829'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV0829'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV0829'CONDITION AS DESCRIBED.  NO OBSERVATIONS WERE TAKEN FROM THIS
 JV0829'STATION AT THIS DATE.
 JV0829'
 JV0829'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV0829'6 MILES SW OF SYKESVILLE.
 JV0829
 JV0829                          STATION RECOVERY (1999)
 JV0829
 JV0829'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV0829'NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0831 ***********************************************************************
 JV0831  DESIGNATION -  ELM AZ MK
 JV0831  PID         -  JV0831
 JV0831  STATE/COUNTY-  MD/HOWARD
 JV0831  COUNTRY     -  US
 JV0831  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0831
 JV0831                         *CURRENT SURVEY CONTROL
 JV0831  ______________________________________________________________________
 JV0831* NAD 83(1986) POSITION- 39 18 40.6    (N) 076 52 26.3    (W)   HD_HELD2
 JV0831* NAVD 88 ORTHO HEIGHT -   146.643 (meters)      481.11  (feet) ADJUSTED
 JV0831  ______________________________________________________________________
 JV0831  GEOID HEIGHT    -        -32.083 (meters)                     GEOID18
 JV0831  DYNAMIC HEIGHT  -        146.566 (meters)      480.86  (feet) COMP
 JV0831  MODELED GRAVITY -    980,098.3   (mgal)                       NAVD 88
 JV0831
 JV0831  VERT ORDER      -  SECOND    CLASS I
 JV0831
 JV0831.The horizontal coordinates were established by autonomous hand held GPS
 JV0831.observations and have an estimated accuracy of +/- 10 meters.
 JV0831
 JV0831.The orthometric height was determined by differential leveling and
 JV0831.adjusted by the NATIONAL GEODETIC SURVEY
 JV0831.in June 1991.
 JV0831
 JV0831.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0831.GEOID18 height accuracy estimate available here.
 JV0831
 JV0831.Click photographs - Photos may exist for this station.
 JV0831
 JV0831.The dynamic height is computed by dividing the NAVD 88
 JV0831.geopotential number by the normal gravity value computed on the
 JV0831.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0831.degrees latitude (g = 980.6199 gals.).
 JV0831
 JV0831.The modeled gravity was interpolated from observed gravity values.
 JV0831
 JV0831;                    North         East    Units  Estimated Accuracy
 JV0831;SPC MD       -   182,570.      410,869.      MT  (+/- 10 meters HH2 GPS)
 JV0831
 JV0831_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3843752994(NAD 83)
 JV0831
 JV0831                          SUPERSEDED SURVEY CONTROL
 JV0831
 JV0831  NGVD 29 (11/26/84)  146.859  (m)          481.82   (f) ADJUSTED    2 0
 JV0831
 JV0831.Superseded values are not recommended for survey control.
 JV0831
 JV0831.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0831.See file dsdata.pdf to determine how the superseded data were derived.
 JV0831
 JV0831_MARKER: DZ = AZIMUTH MARK DISK
 JV0831_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0831_STAMPING: ELM 1958
 JV0831_MARK LOGO: CGS
 JV0831_PROJECTION: FLUSH
 JV0831_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0831_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0831+STABILITY: SURFACE MOTION
 JV0831_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0831+SATELLITE: SATELLITE OBSERVATIONS - May 25, 2007
 JV0831
 JV0831  HISTORY     - Date     Condition        Report By
 JV0831  HISTORY     - 1958     MONUMENTED       CGS
 JV0831  HISTORY     - 20070525 GOOD             MDSHA
 JV0831
 JV0831                          STATION DESCRIPTION
 JV0831
 JV0831'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0831'7.6 MI NW FROM ELLICOTT CITY.
 JV0831'4.7 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION OF
 JV0831'U.S. HIGHWAY 29 AT ELLICOTT CITY, THENCE 1.4 MILES NORTH ALONG
 JV0831'THE MARRIOTTSVILLE ROAD, THENCE 1.5 MILES EAST ALONG STATE
 JV0831'HIGHWAY 99, ABOUT 200 FEET SOUTHEAST OF A ROAD CROSSING, 27 FEET
 JV0831'NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 67 FEET NORTH OF
 JV0831'TELEPHONE POLE NO. 121, 12.5 FEET SOUTH OF A 30-INCH MAPLE TREE,
 JV0831'2 FEET SOUTHEAST OF A METAL WITNESS POST, SET IN THE TOP OF A
 JV0831'CONCRETE POST PROJECTING 3 INCHES ABOVE THE GROUND AND ABOUT 3
 JV0831'FEET ABOVE THE LEVEL OF THE HIGHWAY.
 JV0831
 JV0831                          STATION RECOVERY (2007)
 JV0831
 JV0831'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV0831'THE STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTHWEST OF ELLICOTT
 JV0831'CITY, 4.3 MI (6.9 KM) EAST OF WEST FRIENDSHIP AND 2.4 MI (3.9 KM)
 JV0831'NORTH-NORTHWEST OF PINE ORCHARD.
 JV0831'
 JV0831'TO REACH FROM THE INTERSECTION OF US HIGHWAYS 40 AND 29 AT ELLICOTT
 JV0831'CITY, GO WEST ALONG US HIGHWAY 40 FOR 4.7 MI (7.6 KM) TO AN
 JV0831'INTERSECTION.  TURN RIGHT AND GO NORTH ON MARRIOTSVILLE ROAD FOR 1.4
 JV0831'MI (2.3 KM) TO AN INTERSECTION.  TURN RIGHT AND GO EAST ON STATE
 JV0831'HIGHWAY 99 FOR 1.5 MI (2.4 KM) TO THE MARK ON THE LEFT, ABOUT 0.1 MI
 JV0831'(0.2 KM) SOUTHEAST OF DORCHESTER WAY.
 JV0831'
 JV0831'IT IS 40.0 FT (12.2 M) NORTHEAST OF THE CENTERLINE OF THE HIGHWAY,
 JV0831'94.0 FT (28.7 M) SOUTHEAST OF POWER POLE NUMBER 389893, 125.5 FT (38.3
 JV0831'M) NORTHWEST OF POWER POLE NUMBER 389892, 2.0 FT (0.6 M) SOUTHWEST OF
 JV0831'A METAL WITNESS POST AND SET IN THE TOP OF A 12-INCH (30 CM) SQUARE
 JV0831'CONCRETE POST ABOUT 3 FT (0.9 M) HIGHER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0830 ***********************************************************************
 JV0830  DESIGNATION -  ELM RM 1
 JV0830  PID         -  JV0830
 JV0830  STATE/COUNTY-  MD/HOWARD
 JV0830  COUNTRY     -  US
 JV0830  USGS QUAD   -  SYKESVILLE (2016)
 JV0830
 JV0830                         *CURRENT SURVEY CONTROL
 JV0830  ______________________________________________________________________
 JV0830* NAD 83(1986) POSITION- 39 18 35.13   (N) 076 53 16.15   (W)   HD_HELD1
 JV0830* NAVD 88 ORTHO HEIGHT -   156.475 (meters)      513.37  (feet) ADJUSTED
 JV0830  ______________________________________________________________________
 JV0830  GEOID HEIGHT    -        -32.061 (meters)                     GEOID18
 JV0830  DYNAMIC HEIGHT  -        156.393 (meters)      513.10  (feet) COMP
 JV0830  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 JV0830
 JV0830  VERT ORDER      -  SECOND    CLASS 0
 JV0830
 JV0830.The horizontal coordinates were determined by differentially corrected
 JV0830.hand held GPS observations or other comparable positioning techniques
 JV0830.and have an estimated accuracy of +/- 3 meters.
 JV0830
 JV0830.The orthometric height was determined by differential leveling and
 JV0830.adjusted by the NATIONAL GEODETIC SURVEY
 JV0830.in June 1991.
 JV0830
 JV0830.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0830.GEOID18 height accuracy estimate available here.
 JV0830
 JV0830.Click photographs - Photos may exist for this station.
 JV0830
 JV0830.The dynamic height is computed by dividing the NAVD 88
 JV0830.geopotential number by the normal gravity value computed on the
 JV0830.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0830.degrees latitude (g = 980.6199 gals.).
 JV0830
 JV0830.The modeled gravity was interpolated from observed gravity values.
 JV0830
 JV0830;                    North         East    Units  Estimated Accuracy
 JV0830;SPC MD       -   182,399.8     409,675.1     MT  (+/- 3 meters HH1 GPS) 
 JV0830
 JV0830_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3723952850(NAD 83)
 JV0830
 JV0830                          SUPERSEDED SURVEY CONTROL
 JV0830
 JV0830  NGVD 29 (11/26/84)  156.691  (m)          514.08   (f) ADJUSTED    2 0
 JV0830
 JV0830.Superseded values are not recommended for survey control.
 JV0830
 JV0830.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0830.See file dsdata.pdf to determine how the superseded data were derived.
 JV0830
 JV0830_MARKER: DR = REFERENCE MARK DISK
 JV0830_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0830_STAMPING: ELM NO 1 1958
 JV0830_MARK LOGO: CGS
 JV0830_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0830+STABILITY: SURFACE MOTION
 JV0830
 JV0830  HISTORY     - Date     Condition        Report By
 JV0830  HISTORY     - 1958     MONUMENTED       CGS
 JV0830  HISTORY     - 19990114 MARK NOT FOUND   MDSHA
 JV0830
 JV0830                          STATION DESCRIPTION
 JV0830
 JV0830'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0830'7.3 MI NW FROM ELLICOTT CITY.
 JV0830'4.7 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION OF
 JV0830'U.S. HIGHWAY 29 AT ELLICOTT CITY, THENCE 1.4 MILES NORTH ALONG
 JV0830'THE MARRIOTTSVILLE ROAD, THENCE 0.5 MILE EAST ALONG STATE
 JV0830'HIGHWAY 99, THENCE 0.6 MILE SOUTH ALONG A GRAVELED ROAD, THENCE
 JV0830'0.1 MILE EAST ALONG A GRAVELED ROAD, 100.6 FEET SOUTH OF THE
 JV0830'STATION, 7 FEET WEST OF THE CENTER LINE OF A GRAVELED ROAD, 1
 JV0830'FOOT EAST OF A FENCE LINE AND SET IN THE TOP OF A CONCRETE POST
 JV0830'FLUSH WITH THE GROUND.
 JV0830
 JV0830                          STATION RECOVERY (1999)
 JV0830
 JV0830'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV0830'NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0828 ***********************************************************************
 JV0828  DESIGNATION -  ELM RM 2
 JV0828  PID         -  JV0828
 JV0828  STATE/COUNTY-  MD/HOWARD
 JV0828  COUNTRY     -  US
 JV0828  USGS QUAD   -  SYKESVILLE (2016)
 JV0828
 JV0828                         *CURRENT SURVEY CONTROL
 JV0828  ______________________________________________________________________
 JV0828* NAD 83(1986) POSITION- 39 18 36.20   (N) 076 53 16.96   (W)   HD_HELD1
 JV0828* NAVD 88 ORTHO HEIGHT -   156.136 (meters)      512.26  (feet) ADJUSTED
 JV0828  ______________________________________________________________________
 JV0828  GEOID HEIGHT    -        -32.061 (meters)                     GEOID18
 JV0828  DYNAMIC HEIGHT  -        156.054 (meters)      511.99  (feet) COMP
 JV0828  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 JV0828
 JV0828  VERT ORDER      -  SECOND    CLASS 0
 JV0828
 JV0828.The horizontal coordinates were determined by differentially corrected
 JV0828.hand held GPS observations or other comparable positioning techniques
 JV0828.and have an estimated accuracy of +/- 3 meters.
 JV0828
 JV0828.The orthometric height was determined by differential leveling and
 JV0828.adjusted by the NATIONAL GEODETIC SURVEY
 JV0828.in June 1991.
 JV0828
 JV0828.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0828.GEOID18 height accuracy estimate available here.
 JV0828
 JV0828.Click photographs - Photos may exist for this station.
 JV0828
 JV0828.The dynamic height is computed by dividing the NAVD 88
 JV0828.geopotential number by the normal gravity value computed on the
 JV0828.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0828.degrees latitude (g = 980.6199 gals.).
 JV0828
 JV0828.The modeled gravity was interpolated from observed gravity values.
 JV0828
 JV0828;                    North         East    Units  Estimated Accuracy
 JV0828;SPC MD       -   182,432.7     409,655.6     MT  (+/- 3 meters HH1 GPS) 
 JV0828
 JV0828_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3722052884(NAD 83)
 JV0828
 JV0828                          SUPERSEDED SURVEY CONTROL
 JV0828
 JV0828  NGVD 29 (11/26/84)  156.352  (m)          512.96   (f) ADJUSTED    2 0
 JV0828
 JV0828.Superseded values are not recommended for survey control.
 JV0828
 JV0828.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0828.See file dsdata.pdf to determine how the superseded data were derived.
 JV0828
 JV0828_MARKER: DR = REFERENCE MARK DISK
 JV0828_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0828_STAMPING: ELM NO 2 1958
 JV0828_MARK LOGO: CGS
 JV0828_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0828+STABILITY: SURFACE MOTION
 JV0828
 JV0828  HISTORY     - Date     Condition        Report By
 JV0828  HISTORY     - 1958     MONUMENTED       CGS
 JV0828  HISTORY     - 19990114 MARK NOT FOUND   MDSHA
 JV0828
 JV0828                          STATION DESCRIPTION
 JV0828
 JV0828'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV0828'7.3 MI NW FROM ELLICOTT CITY.
 JV0828'4.7 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION OF
 JV0828'U.S. HIGHWAY 29 AT ELLICOTT CITY, THENCE 1.4 MILES NORTH ALONG
 JV0828'THE MARRIOTTSVILLE ROAD, THENCE 0.5 MILE EAST ALONG STATE HIGHWAY
 JV0828'99, THENCE 0.6 MILE SOUTH ALONG A GRAVELED ROAD, THENCE 0.1 MILE
 JV0828'EAST ALONG A GRAVELED ROAD, 75.4 FEET WEST OF THE STATION, 7
 JV0828'FEET NORTH OF THE CENTER LINE OF THE GRAVELED ROAD, 1/2-FOOT
 JV0828'SOUTH OF A RAIL FENCE, SET IN THE TOP OF A CONCRETE POST
 JV0828'PROJECTING 3 INCHES ABOVE THE GROUND.
 JV0828
 JV0828                          STATION RECOVERY (1999)
 JV0828
 JV0828'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JV0828'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE AREA IS NOW THE
 JV0828'CATTAIL CREEK GOLF COURSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4545 ***********************************************************************
 JV4545  DESIGNATION -  ELMER
 JV4545  PID         -  JV4545
 JV4545  STATE/COUNTY-  MD/MONTGOMERY
 JV4545  COUNTRY     -  US
 JV4545  USGS QUAD   -  POOLESVILLE (2016)
 JV4545
 JV4545                         *CURRENT SURVEY CONTROL
 JV4545  ______________________________________________________________________
 JV4545* NAD 83(1993) POSITION- 39 07 39.12960(N) 077 29 03.61062(W)   ADJUSTED
 JV4545* NAVD 88 ORTHO HEIGHT -    92.92  (+/-2cm)      304.9   (feet) VERTCON3
 JV4545  ______________________________________________________________________
 JV4545  GEOID HEIGHT    -        -32.286 (meters)                     GEOID18
 JV4545  LAPLACE CORR    -          5.19  (seconds)                    DEFLEC18
 JV4545  HORZ ORDER      -  FIRST
 JV4545  VERT ORDER      -  THIRD ? (See Below)
 JV4545
 JV4545.The horizontal coordinates were established by classical geodetic methods
 JV4545.and adjusted by the National Geodetic Survey in November 1994.
 JV4545
 JV4545.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4545.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4545
 JV4545.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4545.GEOID18 height accuracy estimate available here.
 JV4545
 JV4545.The vertical order pertains to the NGVD 29 superseded value.
 JV4545
 JV4545.Click photographs - Photos may exist for this station.
 JV4545
 JV4545.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4545
 JV4545. The following values were computed from the NAD 83(1993) position.
 JV4545
 JV4545;                    North         East     Units Scale Factor Converg.
 JV4545;SPC MD       -   162,275.298   358,121.008   MT  0.99995947   -0 18 14.3
 JV4545;SPC MD       -   532,398.21  1,174,935.34   sFT  0.99995947   -0 18 14.3
 JV4545;UTM  18      - 4,333,868.584   285,249.845   MT  1.00016789   -1 34 06.0
 JV4545
 JV4545!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4545!SPC MD       -   0.99999049  x   0.99995947  =   0.99994996
 JV4545!UTM  18      -   0.99999049  x   1.00016789  =   1.00015837
 JV4545
 JV4545:                Primary Azimuth Mark                     Grid Az
 JV4545:SPC MD       -  ELMER AZ MK                              351 32 34.2
 JV4545:UTM  18      -  ELMER AZ MK                              352 48 25.9
 JV4545
 JV4545_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8524933868(NAD 83)
 JV4545
 JV4545|---------------------------------------------------------------------|
 JV4545| PID    Reference Object                     Distance      Geod. Az  |
 JV4545|                                                           dddmmss.s |
 JV4545| JV4542 DICKERSON PEPCO W STACK             APPROX. 9.2 KM 0105038.7 |
 JV4545| JV4541 DICKERSON PEPCO E STACK             APPROX. 9.3 KM 0105558.5 |
 JV4545| JV4546 ELMER ANIMAL CTR TANK               462.189 METERS 0932344.2 |
 JV4545| CJ9740 ELMER RM 1                           29.313 METERS 17315     |
 JV4545| CJ9741 ELMER RM 2                           17.209 METERS 26801     |
 JV4545| CJ9739 ELMER AZ MK                                        3511419.9 |
 JV4545|---------------------------------------------------------------------|
 JV4545
 JV4545                          SUPERSEDED SURVEY CONTROL
 JV4545
 JV4545  NAD 83(1991)-  39 07 39.13051(N)    077 29 03.61152(W) AD(       ) 1
 JV4545  NAD 83(1986)-  39 07 39.12910(N)    077 29 03.62092(W) AD(       ) 1
 JV4545  NAD 27      -  39 07 38.74631(N)    077 29 04.65142(W) AD(       ) 1
 JV4545  NGVD 29              93.14   (m)          305.6    (f) LEVELING    3  
 JV4545
 JV4545.Superseded values are not recommended for survey control.
 JV4545
 JV4545.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4545.See file dsdata.pdf to determine how the superseded data were derived.
 JV4545
 JV4545_MARKER: DS = TRIANGULATION STATION DISK
 JV4545_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4545_STAMPING: ELMER 1958
 JV4545_MARK LOGO: CGS
 JV4545_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4545+STABILITY: SURFACE MOTION
 JV4545_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4545+SATELLITE: SATELLITE OBSERVATIONS - July 17, 2003
 JV4545
 JV4545  HISTORY     - Date     Condition        Report By
 JV4545  HISTORY     - 1958     MONUMENTED       CGS
 JV4545  HISTORY     - 1969     GOOD             CGS
 JV4545  HISTORY     - 20030717 GOOD             GEOCAC
 JV4545
 JV4545                          STATION DESCRIPTION
 JV4545
 JV4545'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (WER)
 JV4545'THE STATION IS APPROXIMATELY 4.0 MILES SOUTHWEST OF POOLESVILLE,
 JV4545'ABOUT 3.0 MILES SOUTHEAST OF WHITES FERRY AND ABOUT 1.0 MILE NORTH OF
 JV4545'THE POTOMAC RIVER, AT THE ENTRANCE TO THE RED OAKS FARM AND ON THE
 JV4545'PROPERTY OF MR. EDMUND G. WARTHER.
 JV4545'
 JV4545'TO REACH THE STATION FROM THE POST OFFICE IN POOLESVILLE, GO WEST ON
 JV4545'STATE HIGHWAY 107 FOR 4.2 MILES TO A SIDE ROAD LEFT, (ELMER SCHOOL
 JV4545'ROAD) TURN LEFT, SOUTH ON ELMER SCHOOL ROAD AND GO 2.6 MILES TO
 JV4545'FARM LANE (RED OAK FARM) AND THE STATION ON THE WEST SIDE OF ROAD.
 JV4545'
 JV4545'STATION MARKS ARE STANDARD DISKS STAMPED ELMER 1958.  THE SURFACE
 JV4545'DISK IS SET IN A SQUARE CONCRETE POST WHICH PROJECTS 4 INCHES.  IT IS
 JV4545'38 FEET WEST OF THE CENTER OF ELMER SCHOOL ROAD, 19 FEET SOUTH OF
 JV4545'THE CENTER OF FARM LANE ROAD, 6 INCHES NORTH OF AN EAST-WEST
 JV4545'FENCE LINE AND 57 FEET SOUTHWEST OF A POWER LINE POLE NUMBER 98.
 JV4545'A STANDARD WITNESS POST WAS SET 3 FEET EAST OF THE MARK.  THE
 JV4545'UNDERGROUND DISK IS SET IN AN IRREGULAR MASS OF CONCRETE 32 INCHES
 JV4545'BELOW THE SURFACE OF THE GROUND.
 JV4545'
 JV4545'REFERENCE MARK NO. 1, A STANDARD DISK STAMPED ELMER NO 1 1958, IS SET
 JV4545'IN A SQUARE CONCRETE POST WHICH PROJECTS 1 INCH.  IT IS 5 FEET WEST
 JV4545'OF FENCE, 23 FEET WEST OF THE CENTER OF ELMER SCHOOL ROAD, 84 FEET
 JV4545'NORTH-NORTHWEST OF A POWER LINE POLE AND 95 FEET SOUTH OF A FENCE
 JV4545'CORNER.
 JV4545'
 JV4545'REFERENCE MARK NO. 2, A STANDARD DISK STAMPED ELMER NO 2 1958, IS SET
 JV4545'IN A SQUARE CONCRETE POST WHICH PROJECTS 3 INCHES.  IT IS 2.5 FEET
 JV4545'NORTH OF EAST-WEST FENCE LINE, 4 FEET EAST-SOUTHEAST OF A 18 INCH
 JV4545'TREE AND 14 FEET SOUTH OF THE CENTER OF FARM LANE.
 JV4545'
 JV4545'AZIMUTH MARK, A STANDARD DISK STAMPED ELMER 1958, IS SET IN A SQUARE
 JV4545'CONCRETE POST WHICH PROJECTS 3 INCHES.  IT IS 6 INCHES SOUTH OF
 JV4545'FENCE LINE, 11 FEET NORTH OF THE CENTER OF ROAD, 39 FEET NORTHEAST
 JV4545'OF A POWER LINE POLE AND 74 FEET WEST OF A TELEPHONE LINE POLE.
 JV4545'
 JV4545'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH ON ELMER SCHOOL
 JV4545'ROAD FOR 0.7 MILE TO A FARM LANE ON LEFT, TURN LEFT AND GO WEST FOR
 JV4545'0.15 MILE TO THE AZIMUTH MARK ON THE RIGHT.
 JV4545'
 JV4545'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4545
 JV4545                          STATION RECOVERY (1969)
 JV4545
 JV4545'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4545'THE STATION MARK, REFERENCE MARKS 1, 2, AND THE AZIMUTH MARK WERE
 JV4545'RECOVERED AS DESCRIBED IN 1958 BY W.E. RANDALL.
 JV4545'
 JV4545'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--4 MILES SOUTHWEST
 JV4545'OF POOLESVILLE.
 JV4545
 JV4545                          STATION RECOVERY (2003)
 JV4545
 JV4545'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV4545'DID NOT SEARCH FOR REFERENCE OR AZIMUTH MARKS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9080 ***********************************************************************
 HV9080  DESIGNATION -  ELMER
 HV9080  PID         -  HV9080
 HV9080  STATE/COUNTY-  MD/ST MARYS
 HV9080  COUNTRY     -  US
 HV9080  USGS QUAD   -  STRATFORD HALL (2019)
 HV9080
 HV9080                         *CURRENT SURVEY CONTROL
 HV9080  ______________________________________________________________________
 HV9080* NAD 83(1993) POSITION- 38 14 29.48140(N) 076 46 34.27282(W)   ADJUSTED
 HV9080* NAD 83(1993) ELLIP HT-   -30.987 (meters)        (11/14/94)   ADJUSTED
 HV9080* NAVD 88 ORTHO HEIGHT -     2.7   (meters)        9.    (feet) GPS OBS
 HV9080  ______________________________________________________________________
 HV9080  NAVD 88 orthometric height was determined with geoid model    GEOID90
 HV9080  GEOID HEIGHT    -        -33.920 (meters)                     GEOID90
 HV9080  GEOID HEIGHT    -        -33.712 (meters)                     GEOID18
 HV9080  NAD 83(1993) X  -  1,147,404.445 (meters)                     COMP
 HV9080  NAD 83(1993) Y  - -4,882,854.554 (meters)                     COMP
 HV9080  NAD 83(1993) Z  -  3,926,515.491 (meters)                     COMP
 HV9080  LAPLACE CORR    -         -1.25  (seconds)                    DEFLEC18
 HV9080  HORZ ORDER      -  SECOND
 HV9080  ELLP ORDER      -  FOURTH    CLASS II
 HV9080
 HV9080.The horizontal coordinates were established by GPS observations
 HV9080.and adjusted by the National Geodetic Survey in November 1994.
 HV9080
 HV9080.The orthometric height was determined by GPS observations and a
 HV9080.high-resolution geoid model.
 HV9080
 HV9080.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9080.GEOID18 height accuracy estimate available here.
 HV9080
 HV9080.Click photographs - Photos may exist for this station.
 HV9080
 HV9080.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9080
 HV9080.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9080
 HV9080.The ellipsoidal height was determined by GPS observations
 HV9080.and is referenced to NAD 83.
 HV9080
 HV9080. The following values were computed from the NAD 83(1993) position.
 HV9080
 HV9080;                    North         East     Units Scale Factor Converg.
 HV9080;SPC MD       -    63,835.756   419,593.598   MT  1.00001069   +0 08 25.7
 HV9080;SPC MD       -   209,434.48  1,376,616.66   sFT  1.00001069   +0 08 25.7
 HV9080;SPC VA N     - 2,065,224.452 3,650,895.406   MT  0.99996979   +1 04 33.1
 HV9080;SPC VA N     - 6,775,657.22 11,977,979.34   sFT  0.99996979   +1 04 33.1
 HV9080;UTM  18      - 4,234,104.583   344,562.493   MT  0.99989756   -1 05 58.7
 HV9080
 HV9080!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9080!SPC MD       -   1.00000486  x   1.00001069  =   1.00001555
 HV9080!SPC VA N     -   1.00000486  x   0.99996979  =   0.99997465
 HV9080!UTM  18      -   1.00000486  x   0.99989756  =   0.99990242
 HV9080
 HV9080_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4456234104(NAD 83)
 HV9080
 HV9080                          SUPERSEDED SURVEY CONTROL
 HV9080
 HV9080  NAD 83(1991)-  38 14 29.48074(N)    076 46 34.27761(W) AD(       ) 2
 HV9080
 HV9080.Superseded values are not recommended for survey control.
 HV9080
 HV9080.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9080.See file dsdata.pdf to determine how the superseded data were derived.
 HV9080
 HV9080_MARKER: DD = SURVEY DISK
 HV9080_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9080_STAMPING: ELMER GPS 1992
 HV9080_MARK LOGO: NOS
 HV9080_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 HV9080_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 HV9080+STABILITY: POSITION/ELEVATION WELL
 HV9080_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9080+SATELLITE: SATELLITE OBSERVATIONS - 1992
 HV9080
 HV9080  HISTORY     - Date     Condition        Report By
 HV9080  HISTORY     - 1992     MONUMENTED       NOS
 HV9080
 HV9080                          STATION DESCRIPTION
 HV9080
 HV9080'DESCRIBED BY NATIONAL OCEAN SERVICE 1992
 HV9080'STATION IS LOCATED ALONG THE EAST BANK OF ST CATHERINE SOUND IN THE
 HV9080'VICINITY OF RIVER SPRING.
 HV9080'TO REACH FROM THE POST OFFICE IN AVENUE GO
 HV9080'SOUTH ON MD HIGHWAY 242 FOR 1.15 MI (1.85 KM) TO A ROAD RIGHT.  TURN
 HV9080'RIGHT AND GO WEST ON LOUIS BAILEY ROAD FOR 0.4 MI (0.64 KM) TO A DIRT
 HV9080'DRIVE LEFT . TURN LEFT AND GO SW ON THE DRIVE FOR 0.05 MI (0.08 KM) TO
 HV9080'THE STATION ON THE LEFT.
 HV9080'THE STATION IS MARKED BY A STANDARD NOS
 HV9080'ALUMINUN DISK STAMPED ---ELMER GPS 1992--- SET ON AN ALUMINUM ROD THAT
 HV9080'IS SUROUNDED BY A ROUND CONCRETE MONUMENT THAT IS RECESSED 0.05 METERS
 HV9080'BELOW GROUND, IT IS 30.5 METERS NORTH OF A TREE LINE, 22.7 M
 HV9080'(74.47 FT) SE OF A DIAGONAL DRIVE AND 14.6 M (47.90 FT) S OF THE
 HV9080'CENTERLINE OF THE DRIVE TO THE BAILEY PLACE.
 HV9080'DESCRIBED BY PBW
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4546 ***********************************************************************
 JV4546  DESIGNATION -  ELMER ANIMAL CTR TANK
 JV4546  PID         -  JV4546
 JV4546  STATE/COUNTY-  MD/MONTGOMERY
 JV4546  COUNTRY     -  US
 JV4546  USGS QUAD   -  POOLESVILLE (2016)
 JV4546
 JV4546                         *CURRENT SURVEY CONTROL
 JV4546  ______________________________________________________________________
 JV4546* NAD 83(1993) POSITION- 39 07 38.24145(N) 077 28 44.40235(W)   ADJUSTED
 JV4546  ______________________________________________________________________
 JV4546  GEOID HEIGHT    -        -32.271 (meters)                     GEOID18
 JV4546  LAPLACE CORR    -          5.30  (seconds)                    DEFLEC18
 JV4546  HORZ ORDER      -  THIRD
 JV4546
 JV4546.The horizontal coordinates were established by classical geodetic methods
 JV4546.and adjusted by the National Geodetic Survey in November 1994.
 JV4546
 JV4546.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4546.GEOID18 height accuracy estimate available here.
 JV4546
 JV4546.Click photographs - Photos may exist for this station.
 JV4546
 JV4546.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4546
 JV4546. The following values were computed from the NAD 83(1993) position.
 JV4546
 JV4546;                    North         East     Units Scale Factor Converg.
 JV4546;SPC MD       -   162,245.477   358,582.215   MT  0.99995945   -0 18 02.3
 JV4546;SPC MD       -   532,300.37  1,176,448.48   sFT  0.99995945   -0 18 02.3
 JV4546;SPC VA N     - 2,162,623.099 3,588,283.924   MT  0.99998791   +0 38 14.0
 JV4546;SPC VA N     - 7,095,205.95 11,772,561.51   sFT  0.99998791   +0 38 14.0
 JV4546;UTM  18      - 4,333,828.584   285,710.377   MT  1.00016545   -1 33 53.8
 JV4546
 JV4546_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8571033828(NAD 83)
 JV4546
 JV4546                          SUPERSEDED SURVEY CONTROL
 JV4546
 JV4546  NAD 83(1991)-  39 07 38.24222(N)    077 28 44.40302(W) AD(       ) 3
 JV4546  NAD 83(1986)-  39 07 38.24101(N)    077 28 44.41277(W) AD(       ) 3
 JV4546  NAD 27      -  39 07 37.85992(N)    077 28 45.44180(W) AD(       ) 3
 JV4546
 JV4546.Superseded values are not recommended for survey control.
 JV4546
 JV4546.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4546.See file dsdata.pdf to determine how the superseded data were derived.
 JV4546
 JV4546_MARKER: 53 = ELEVATED TANK
 JV4546_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4546+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2005
 JV4546
 JV4546  HISTORY     - Date     Condition        Report By
 JV4546  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4546  HISTORY     - 20030717 GOOD             GEOCAC
 JV4546  HISTORY     - 20050731 GOOD             USPSQD
 JV4546
 JV4546                          STATION DESCRIPTION
 JV4546
 JV4546'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4546'THE STATION IS THE CENTER OF THE TOP OF THE ELMER ANIMAL CENTER
 JV4546'TANK, LOCATED 2.6 MILES SOUTH OF THE INTERSECTION OF ELMER SCHOOL
 JV4546'ROAD AND STATE HIGHWAY 107.
 JV4546'
 JV4546'THE TANK IS A PEDESTAL-SPHERE ELEVATED TANK 171 FEET ABOVE THE
 JV4546'GROUND
 JV4546
 JV4546                          STATION RECOVERY (2003)
 JV4546
 JV4546'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 JV4546'RECOVERED IN GOOD CONDITION.
 JV4546
 JV4546                          STATION RECOVERY (2005)
 JV4546
 JV4546'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV4546'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5733 ***********************************************************************
 HV5733  DESIGNATION -  ELMORE
 HV5733  PID         -  HV5733
 HV5733  STATE/COUNTY-  MD/TALBOT
 HV5733  COUNTRY     -  US
 HV5733  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5733
 HV5733                         *CURRENT SURVEY CONTROL
 HV5733  ______________________________________________________________________
 HV5733* NAD 83(1991) POSITION- 38 46 00.30172(N) 076 13 46.22117(W)   ADJUSTED
 HV5733* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5733  ______________________________________________________________________
 HV5733  GEOID HEIGHT    -        -34.356 (meters)                     GEOID18
 HV5733  LAPLACE CORR    -         -4.81  (seconds)                    DEFLEC18
 HV5733  HORZ ORDER      -  THIRD
 HV5733
 HV5733.The horizontal coordinates were established by classical geodetic methods
 HV5733.and adjusted by the National Geodetic Survey in January 1992.
 HV5733
 HV5733.The orthometric height was scaled from a topographic map.
 HV5733
 HV5733.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5733.GEOID18 height accuracy estimate available here.
 HV5733
 HV5733.Click photographs - Photos may exist for this station.
 HV5733
 HV5733.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5733
 HV5733. The following values were computed from the NAD 83(1991) position.
 HV5733
 HV5733;                    North         East     Units Scale Factor Converg.
 HV5733;SPC MD       -   122,396.278   466,959.687   MT  0.99995165   +0 29 00.9
 HV5733;SPC MD       -   401,561.79  1,532,016.91   sFT  0.99995165   +0 29 00.9
 HV5733;UTM  18      - 4,291,610.828   393,184.476   MT  0.99974050   -0 46 11.7
 HV5733
 HV5733!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5733!SPC MD       -   1.00000527  x   0.99995165  =   0.99995692
 HV5733!UTM  18      -   1.00000527  x   0.99974050  =   0.99974577
 HV5733
 HV5733:                Primary Azimuth Mark                     Grid Az
 HV5733:SPC MD       -  BEVERLY                                  029 18 58.7
 HV5733:UTM  18      -  BEVERLY                                  030 34 11.3
 HV5733
 HV5733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9318491610(NAD 83)
 HV5733
 HV5733|---------------------------------------------------------------------|
 HV5733| PID    Reference Object                     Distance      Geod. Az  |
 HV5733|                                                           dddmmss.s |
 HV5733| HV5729 BEVERLY                             467.427 METERS 0294759.6 |
 HV5733| HV5731 ANSLEY                              297.982 METERS 09026     |
 HV5733| HV5728 HARPER                              471.565 METERS 1713758.6 |
 HV5733| HV5664 THELMA                              APPROX. 0.6 KM 2031758.5 |
 HV5733|---------------------------------------------------------------------|
 HV5733
 HV5733                          SUPERSEDED SURVEY CONTROL
 HV5733
 HV5733  NAD 83(1986)-  38 46 00.29781(N)    076 13 46.23590(W) AD(       ) 3
 HV5733  NAD 27      -  38 45 59.88300(N)    076 13 47.43200(W) AD(       ) 3
 HV5733  USSD        -  38 46 00.25800(N)    076 13 47.25200(W) AD(       ) 3
 HV5733
 HV5733.Superseded values are not recommended for survey control.
 HV5733
 HV5733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5733.See file dsdata.pdf to determine how the superseded data were derived.
 HV5733
 HV5733_MARKER: H = DRILL HOLE
 HV5733_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5733_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5733
 HV5733  HISTORY     - Date     Condition        Report By
 HV5733  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5733  HISTORY     - 1940     GOOD             CGS
 HV5733  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5733
 HV5733                          STATION DESCRIPTION
 HV5733
 HV5733'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5733'ON THE WESTERN SHORE OF BACK CREEK (SAN DOMINGO CREEK), ABOUT 1/4
 HV5733'MILE N OF N END OF HAMBLETON ISLAND, AND 1-1/4 MILES S OF ST.
 HV5733'MICHAELS, NEAR EDGE OF CULTIVATED FIELD ABOUT 6 FEET ABOVE HIGH
 HV5733'WATER, 5 YARDS S OF EDGE OF VERTICAL BANK AT SHORE, AND 20 YARDS
 HV5733'W OF EXTREME END OF POINT OF MARSH.  STATION IS MARKED BY A HOLE
 HV5733'IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5733'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5733'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5733'COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A
 HV5733'2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE
 HV5733'BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV5733'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 5-INCH LOCUST TREE,
 HV5733'5.39 METERS (17.68 FEET), S 5 DEG 30 MIN W.  S CHIMNEY OF WILLEY
 HV5733'HOUSE, 3/8 MILE, S 25 DEG 8 MIN W.  N CHIMNEY OF HOUSE, 1/4 MILE,
 HV5733'S 61 DEG W.  CHIMNEY OF HOUSE, 1 MILE, N 41 DEG 19 MIN E.  CHIMNEY OF
 HV5733'OYSTER HOUSE, 3/4 MILE, N 50 DEG 18 MIN E.  CHIMNEY OF HOUSE, 1/2
 HV5733'MILE, N 57 DEG 39 MIN E. NAIL IN BLAZE IN 12-INCH CEDAR TREE, 5.40
 HV5733'METERS (17.72 FEET), S 31 DEG 51 MIN E.  CUPOLA ON BEVERLY HOUSE,
 HV5733'1/4 MILE, S 13 DEG 30 MIN E.
 HV5733
 HV5733                          STATION RECOVERY (1940)
 HV5733
 HV5733'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5733'STATION MARK RECOVERED.  3 INCHES ABOVE SURFACE OF GROUND, TOP IS
 HV5733'CRACKED BUT FIRMLY IN PLACE.  12-INCH CEDAR REFERENCE TREE INTACT.
 HV5733'
 HV5733'STATION IS ON THE WESTERN SHORE OF SAN DOMINGO CREEK ABOUT 1/4
 HV5733'MILE N OF N END OF HAMBLETON ISLAND, IN SE CORNER OF ORCHARD
 HV5733'OVERGROWN WITH YOUNG TREES ON BANK 6 FEET ABOVE HIGH WATER, 0.6
 HV5733'METER SW OF EDGE OF BANK, 6.0 METERS NW OF POINT OF BANK, AND
 HV5733'ABOUT 20 YARDS W OF EXTREME POINT OF MARSH.
 HV5733
 HV5733                          STATION RECOVERY (1961)
 HV5733
 HV5733'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5733'STATION NOT RECOVERED AFTER AN ADEQUATE SEARCH OF THE AREA.  THE
 HV5733'STATION WAS REPORTED AS BEING 0.6 M. FROM THE EDGE OF THE BANK IN
 HV5733'1940 AND HAS NO DOUBT BEEN DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3907 ***********************************************************************
 JU3907  DESIGNATION -  EMERLE
 JU3907  PID         -  JU3907
 JU3907  STATE/COUNTY-  MD/CECIL
 JU3907  COUNTRY     -  US
 JU3907  USGS QUAD   -  ELKTON (2016)
 JU3907
 JU3907                         *CURRENT SURVEY CONTROL
 JU3907  ______________________________________________________________________
 JU3907* NAD 83(1991) POSITION- 39 33 44.36854(N) 075 46 54.44975(W)   ADJUSTED
 JU3907* NAVD 88 ORTHO HEIGHT -    18.1   (meters)       59.    (feet) VERTCON3
 JU3907  ______________________________________________________________________
 JU3907  GEOID HEIGHT    -        -33.218 (meters)                     GEOID18
 JU3907  LAPLACE CORR    -          0.97  (seconds)                    DEFLEC18
 JU3907  HORZ ORDER      -  SECOND
 JU3907
 JU3907.The horizontal coordinates were established by classical geodetic methods
 JU3907.and adjusted by the National Geodetic Survey in January 1992.
 JU3907
 JU3907.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3907.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3907
 JU3907.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3907.GEOID18 height accuracy estimate available here.
 JU3907
 JU3907.Click photographs - Photos may exist for this station.
 JU3907
 JU3907.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3907
 JU3907. The following values were computed from the NAD 83(1991) position.
 JU3907
 JU3907;                    North         East     Units Scale Factor Converg.
 JU3907;SPC MD       -   211,133.162   504,687.778   MT  1.00002158   +0 45 52.5
 JU3907;SPC MD       -   692,692.72  1,655,796.48   sFT  1.00002158   +0 45 52.5
 JU3907;UTM  18      - 4,379,473.200   432,842.004   MT  0.99965553   -0 29 52.6
 JU3907
 JU3907!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3907!SPC MD       -   1.00000238  x   1.00002158  =   1.00002396
 JU3907!UTM  18      -   1.00000238  x   0.99965553  =   0.99965791
 JU3907
 JU3907:                Primary Azimuth Mark                     Grid Az
 JU3907:SPC MD       -  GRAYS HILL 2                             346 11 33.6
 JU3907:UTM  18      -  GRAYS HILL 2                             347 27 18.7
 JU3907
 JU3907_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3284279473(NAD 83)
 JU3907
 JU3907|---------------------------------------------------------------------|
 JU3907| PID    Reference Object                     Distance      Geod. Az  |
 JU3907|                                                           dddmmss.s |
 JU3907| JU3906 BOUNDARY MONUMENT 76 DE MD           24.044 METERS 05837     |
 JU3907| CB1477 EMERLE RM 1                          23.328 METERS 19623     |
 JU3907| JU3954 NORTH EAST MICROWAVE TOWER          APPROX.12.7 KM 2694148.8 |
 JU3907| CB1478 EMERLE RM 2                          25.260 METERS 28457     |
 JU3907| CB1479 EMERLE RM 3                          66.991 METERS 33752     |
 JU3907| JU3872 GRAYS HILL 2                        APPROX. 5.8 KM 3465726.1 |
 JU3907|---------------------------------------------------------------------|
 JU3907
 JU3907                          SUPERSEDED SURVEY CONTROL
 JU3907
 JU3907  NAD 83(1986)-  39 33 44.36164(N)    075 46 54.45683(W) AD(       ) 2
 JU3907  NAD 27      -  39 33 43.96760(N)    075 46 55.69280(W) AD(       ) 2
 JU3907  NGVD 29 (07/19/86)   18.3    (m)           60.     (f) VERT ANG       
 JU3907
 JU3907.Superseded values are not recommended for survey control.
 JU3907
 JU3907.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3907.See file dsdata.pdf to determine how the superseded data were derived.
 JU3907
 JU3907_MARKER: DS = TRIANGULATION STATION DISK
 JU3907_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3907_STAMPING: EMERLE 1961
 JU3907_MARK LOGO: CGS
 JU3907_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU3907_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3907+STABILITY: SURFACE MOTION
 JU3907_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU3907+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2008
 JU3907
 JU3907  HISTORY     - Date     Condition        Report By
 JU3907  HISTORY     - 1961     MONUMENTED       CGS
 JU3907  HISTORY     - 20080208 GOOD             GEOCAC
 JU3907
 JU3907                          STATION DESCRIPTION
 JU3907
 JU3907'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3907'THE STATION IS LOCATED IN A HEAVY WOODED AREA ALONG THE DELAWARE
 JU3907'AND MARYLAND STATE LINE, 3-1/2 MILES NORTHEAST OF NORTH
 JU3907'CHESAPEAKE CITY, 3-3/4 MILES SOUTHWEST OF GLASGOW, 4-1/4 MILES
 JU3907'SOUTHEAST OF ELKTON AND ON PROPERTY OWNED BY MR. ALPHONSE J.
 JU3907'EMERLE.
 JU3907'
 JU3907'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JU3907'213 ABOUT 1/2 MILE SOUTH OF ELKTON, GO SOUTH ON U.S. HIGHWAY 213
 JU3907'FOR 2.5 MILES TO A CROSSROAD, TURN LEFT, GO EAST ON A MACADAM
 JU3907'ROAD FOR 1.45 MILES TO A FARM ROAD RIGHT, JUST WEST OF
 JU3907'MR. EMERLES HOUSE, TURN RIGHT AND GO SOUTH ON A FARM ROAD FOR
 JU3907'0.35 MILE TO A DIM FORK, CONTINUE STRAIGHT AHEAD ON THE RIGHT
 JU3907'FORK FOR 0.3 MILE TO DIM WOODS ROAD RIGHT AND THE STATION LOCATED
 JU3907'ON THE LEFT.
 JU3907'
 JU3907'THE STATION MARK, A STANDARD DISK STAMPED EMERLE 1961, IS SET
 JU3907'IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 2 INCHES
 JU3907'ABOVE THE GROUND SURFACE.  IT IS 2.0 FEET SOUTH-SOUTHEAST OF A
 JU3907'STANDARD METAL WITNESS POST AND MARKER, 18.0 FEET WEST-SOUTHWEST
 JU3907'OF A 20-INCH WHITE OAK TREE AND 27.0 FEET EAST OF THE APPROXIMATE
 JU3907'CENTER OF A NORTH AND SOUTH WOODS ROAD.
 JU3907'
 JU3907'REFERENCE MARK 1, A STANDARD DISK STAMPED EMERLE NO 1 1961,
 JU3907'IS SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 3
 JU3907'INCHES ABOVE THE GROUND SURFACE.  IT IS 9.5 FEET WEST OF THE
 JU3907'APPROXIMATE CENTER OF THE WOODS ROAD, 77.1 FEET SOUTH-SOUTHEAST OF
 JU3907'THE WITNESS POST AND ABOUT 1.0 FOOT LOWER THAN THE STATION MARK.
 JU3907'
 JU3907'REFERENCE MARK 2, A STANDARD DISK STAMPED EMERLE NO 2 1961, IS
 JU3907'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 4 INCHES
 JU3907'ABOVE THE GROUND SURFACE.  IT IS 6.0 FEET NORTH OF A DIM WOODS
 JU3907'ROAD, 51.0 FEET WEST-NORTHWEST OF THE APPROXIMATE CENTER OF THE
 JU3907'NORTH AND SOUTH WOODS ROAD, 80.9 FEET WEST-NORTHWEST OF THE
 JU3907'WITNESS POST AND IS ABOUT 1-1/2 FEET HIGHER THAN THE STATION
 JU3907'MARK.
 JU3907'
 JU3907'REFERENCE MARK 3, A STANDARD DISK STAMPED EMERLE NO 3 1961, IS
 JU3907'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 4 INCHES
 JU3907'ABOVE THE GROUND SURFACE.  IT IS 1.2 FEET WEST-SOUTHWEST OF A
 JU3907'STANDARD METAL WITNESS POST AND MARKER, 2.4 FEET WEST-SOUTHWEST
 JU3907'OF A NORTH AND SOUTH FENCE LINE AND 8.0 FEET EAST-NORTHEAST OF
 JU3907'THE APPROXIMATE CENTER OF THE WOODS ROAD.
 JU3907'
 JU3907'BOUNDARY MONUMENT 76, IS A 15-INCH GRANITE STONE WHICH PROJECTS
 JU3907'ABOUT 3.0 FEET ABOVE THE GROUND SURFACE.  THE POINT OBSERVED TO AND
 JU3907'TRAVERSE TO WAS THE APEX OF THE MONUMENT.  IT IS 60.9 FEET
 JU3907'NORTHEAST OF A 20-INCH WHITE OAK TREE, 79.0 FEET NORTHEAST OF
 JU3907'A WITNESS POST AND 100.0 FEET EAST-NORTHEAST OF THE APPROXIMATE
 JU3907'CENTER OF A NORTH AND SOUTH WOODS ROAD.
 JU3907'
 JU3907'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 JU3907
 JU3907                          STATION RECOVERY (2008)
 JU3907
 JU3907'RECOVERY NOTE BY GEOCACHING 2008 (WD)
 JU3907'THE STATION AND ALL THREE REFERENCE MARKS ARE MARKED WITH ORANGE
 JU3907'CASRONITE WITNESS POSTS.  REFERENCE MARK NO. 1 IS SOUTHWEST OF THE
 JU3907'STATION.  TO REACH FROM THE INTERSECTION OF US HIGHWAY 40 AND 213
 JU3907'ABOUT ONE-HALF MILE SOUTH OF ELKTON, MD, GO SOUTH ON US HIGHWAY 213
 JU3907'FOR ABOUT 3.4 MILES TO THE INTERSECTION WITH ELK FOREST ROAD.  TURN
 JU3907'LEFT AND GO NORTHEAST ON ELK FOREST ROAD FOR ABOUT 100 YARDS TO THE
 JU3907'INTERSECTION WITH KNIGHTS CORNER ROAD.  TURN RIGHT AND GO SOUTHEAST ON
 JU3907'KNIGHTS CORNER ROAD FOR ABOUT 0.4 MILES TO THE INTERSECTION WITH
 JU3907'WOODS ROAD.  TURN LEFT AND GO EASTERLY ON WOODS ROAD FOR ABOUT 1.1
 JU3907'MILES TO THE STATE BOUNDARY LINE AND A DRIVEWAY LEADING NORTH.  TURN
 JU3907'LEFT AND GO NORTH ON THE DRIVEWAY FOR ABOUT 0.25 MILES TO A WHITE
 JU3907'FARMHOUSE ON THE RIGHT.  FROM THE FARMHOUSE, PACK NORTH ON A MUDDY
 JU3907'WOODS ROAD FOR ABOUT 0.3 MILES TO THE STONE ON THE RIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6021 ***********************************************************************
 JV6021  DESIGNATION -  EMERY
 JV6021  PID         -  JV6021
 JV6021  STATE/COUNTY-  MD/HOWARD
 JV6021  COUNTRY     -  US
 JV6021  USGS QUAD   -  CLARKSVILLE (2016)
 JV6021
 JV6021                         *CURRENT SURVEY CONTROL
 JV6021  ______________________________________________________________________
 JV6021* NAD 83(1991) POSITION- 39 08 40.87743(N) 076 54 05.86583(W)   ADJUSTED
 JV6021* NAVD 88 ORTHO HEIGHT -   136.37  (+/-2cm)      447.4   (feet) VERTCON3
 JV6021  ______________________________________________________________________
 JV6021  GEOID HEIGHT    -        -32.117 (meters)                     GEOID18
 JV6021  LAPLACE CORR    -         -3.67  (seconds)                    DEFLEC18
 JV6021  HORZ ORDER      -  FIRST
 JV6021  VERT ORDER      -  THIRD ? (See Below)
 JV6021
 JV6021.The horizontal coordinates were established by classical geodetic methods
 JV6021.and adjusted by the National Geodetic Survey in January 1992.
 JV6021
 JV6021.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6021.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6021
 JV6021.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6021.GEOID18 height accuracy estimate available here.
 JV6021
 JV6021.The vertical order pertains to the NGVD 29 superseded value.
 JV6021
 JV6021.Click photographs - Photos may exist for this station.
 JV6021
 JV6021.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6021
 JV6021. The following values were computed from the NAD 83(1991) position.
 JV6021
 JV6021;                    North         East     Units Scale Factor Converg.
 JV6021;SPC MD       -   164,072.910   408,503.774   MT  0.99996083   +0 03 42.3
 JV6021;SPC MD       -   538,295.87  1,340,232.80   sFT  0.99996083   +0 03 42.3
 JV6021;UTM  18      - 4,334,554.919   335,664.275   MT  0.99993254   -1 12 02.6
 JV6021
 JV6021!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6021!SPC MD       -   0.99998364  x   0.99996083  =   0.99994447
 JV6021!UTM  18      -   0.99998364  x   0.99993254  =   0.99991619
 JV6021
 JV6021:                Primary Azimuth Mark                     Grid Az
 JV6021:SPC MD       -  RENN AZ MK                               312 40 45.4
 JV6021:UTM  18      -  RENN AZ MK                               313 56 30.3
 JV6021
 JV6021_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3566434554(NAD 83)
 JV6021
 JV6021|---------------------------------------------------------------------|
 JV6021| PID    Reference Object                     Distance      Geod. Az  |
 JV6021|                                                           dddmmss.s |
 JV6021| JV6023 JOHN HOPKINS PHYSICS LAB TANK       APPROX. 2.2 KM 0020950.9 |
 JV6021| CA9387 EMERY RM 1                           48.006 METERS 03535     |
 JV6021| JV6022 RENN                                  9.911 METERS 13130     |
 JV6021| JV5880 LAUREL MUN TANK                     APPROX. 5.2 KM 1420144.0 |
 JV6021| CA9388 EMERY RM 2                           46.208 METERS 15045     |
 JV6021| CA9386 RENN AZ MK                                         3124427.7 |
 JV6021| JV6024 CLARKSVILLE GRACE R AND D TANK      APPROX. 5.2 KM 3573419.4 |
 JV6021|---------------------------------------------------------------------|
 JV6021
 JV6021                          SUPERSEDED SURVEY CONTROL
 JV6021
 JV6021  NAD 83(1986)-  39 08 40.87616(N)    076 54 05.87517(W) AD(       ) 1
 JV6021  NAD 27      -  39 08 40.48868(N)    076 54 06.96913(W) AD(       ) 1
 JV6021  NGVD 29             136.58   (m)          448.1    (f) LEVELING    3  
 JV6021
 JV6021.Superseded values are not recommended for survey control.
 JV6021
 JV6021.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6021.See file dsdata.pdf to determine how the superseded data were derived.
 JV6021
 JV6021_MARKER: DS = TRIANGULATION STATION DISK
 JV6021_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6021_STAMPING: EMERY 1957
 JV6021_MARK LOGO: CGS
 JV6021_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6021+STABILITY: SURFACE MOTION
 JV6021
 JV6021  HISTORY     - Date     Condition        Report By
 JV6021  HISTORY     - 1957     MONUMENTED       CGS
 JV6021  HISTORY     - 1960     GOOD             MDBCSM
 JV6021  HISTORY     - 1966     GOOD             CGS
 JV6021
 JV6021                          STATION DESCRIPTION
 JV6021
 JV6021'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6021'STATION IS LOCATED ABOUT 4 MILES NORTHWEST OF LAUREL ON THE PROPERTY
 JV6021'OF EMERY IAGER.  STATION IS 84 FEET SOUTHWEST OF THE SOUTHWEST
 JV6021'CORNER OF OLD BARN, 55 FEET NORTHWEST OF EDGE OF ROAD BANK AND ON
 JV6021'THE APPROXIMATE HIGHWAY RIGHT OF WAY LINE.  THE MARK IS ABOUT
 JV6021'1 FOOT BELOW THE SURFACE AND THE DISK IS STAMPED EMERY 1957.
 JV6021'
 JV6021'REFERENCE MARK NO. 1 IS 49 FEET SOUTH OF THE APPROXIMATE CENTER OF
 JV6021'DRIVEWAY 27 FEET WEST OF PEAR TREE AND 4 FEET SOUTH OF CONCRETE
 JV6021'HIGHWAY RIGHT OF WAY MARKER.  THE MARK IS FLUSH WITH THE SURFACE
 JV6021'AND THE DISK IS STAMPED EMERY NO 1 1957.
 JV6021'
 JV6021'REFERENCE MARK NO. 2 IS 46 FEET SOUTHEAST OF THE APPROXIMATE CENTER
 JV6021'OF HIGHWAY, 18 FEET SOUTHWEST OF THE APPROXIMATE CENTER OF DRIVEWAY
 JV6021'AND 5.5 FEET WEST OF UTILITY POLE.  THE MARK PROJECTS ABOUT 5
 JV6021'INCHES AND THE DISK IS STAMPED EMERY NO 2 1957.
 JV6021'
 JV6021'AZIMUTH MARK IS 18 FEET NORTH OF THE APPROXIMATE CENTER OF ROAD, 6
 JV6021'FEET EAST SOUTHEAST OF UTILITY POLE AND 2.5 FEET EAST SOUTHEAST OF
 JV6021'WITNESS POST.  THE MARK PROJECTS ABOUT 5 INCHES AND THE DISK IS
 JV6021'STAMPED RENN WSSD 1942.
 JV6021'
 JV6021'A TRAVERSE CONNECTION WAS MADE TO STATION RENN 1942 WSSD WHICH IS 23
 JV6021'FEET NORTHWEST OF EDGE OF ROAD BANK.  THIS STATION WAS NOT USED AT
 JV6021'THIS TIME AS IT IS BELIEVED IT WILL SOON BE DISTURBED BY HIGHWAY
 JV6021'CONSTRUCTION.
 JV6021'
 JV6021'TO REACH STATION FROM THE POST OFFICE IN LAUREL GO WEST ON MAIN
 JV6021'STREET FOR 0.7 MILE TO CROSS STREET.  TURN RIGHT AND FOLLOW STATE
 JV6021'ROUTE 216 FOR 0.75 MILE TO FORKS.  KEEP LEFT FORK FOR 2.5 MILES TO
 JV6021'CROSSROADS.  TURN LEFT AND GO 0.05 MILE TO STATION ON
 JV6021'RIGHT AS DESCRIBED.  TO REACH AZIMUTH MARK FROM CROSSROADS GO
 JV6021'WESTERLY FOR 0.2 MILE TO AZIMUTH MARK ON RIGHT AS DESCRIBED.
 JV6021'
 JV6021'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV6021
 JV6021                          STATION RECOVERY (1960)
 JV6021
 JV6021'RECOVERY NOTE BY MD BUR SURV AND MAPS 1960 (TLC)
 JV6021'STATION AND ALL REFERENCE MARKS WERE RECOVERED IN GOOD
 JV6021'CONDITION.  IT IS LOCATED 0.05 MILE SOUTH OF THE INTERSECTION
 JV6021'OF MARYLAND ROUTES 216 AND 29.
 JV6021
 JV6021                          STATION RECOVERY (1966)
 JV6021
 JV6021'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV6021'THE STATION, REFERENCE MARKS 1 AND 2, AND THE AZIMUTH MARKS WERE
 JV6021'RECOVERED AND FOUND IN GOOD CONDITION.  THE AZIMUTH MARK WAS FOUND
 JV6021'IN A LEANING POSITION BUT THE DIRECTION AND MEASUREMENTS COMPARED
 JV6021'FAVORABLY WITH THE 1957 OBSERVATIONS.  STATION RENN 1942 WSSD
 JV6021'WAS SEARCHED FOR BUT WAS NOT RECOVERED AND ASSUMED DESTROYED BY
 JV6021'HIGHWAY CONSTRUCTION.  DUE TO CHANGES IN THE AREA A COMPLETE NEW
 JV6021'DESCRIPTION FOLLOWS.
 JV6021'
 JV6021'THE STATION IS ABOUT 4 MILES NORTHWEST OF LAUREL, 3 MILES NORTHEAST
 JV6021'OF BURTONSVILLE, 0.05 MILE SOUTHWEST OF THE INTERSECTION OF U.S.
 JV6021'HIGHWAY 29 AND STATE HIGHWAY 216, AND ON PROPERTY OWNED BY MR. EMERY
 JV6021'IAGER.
 JV6021'
 JV6021'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 29 AND
 JV6021'STATE HIGHWAY 216, GO SOUTHERLY ON U.S. HIGHWAY 29 FOR 100 YARDS TO
 JV6021'A DRIVEWAY ON THE RIGHT.  TURN RIGHT ONTO DRIVEWAY AND THE STATION
 JV6021'IS TO THE LEFT ON THE WEST ROAD CUTBANK.
 JV6021'
 JV6021'THE STATION IS A STANDARD TRIANGULATION STATION DISK STAMPED EMERY
 JV6021'1957, SET IN THE TOP OF A CIRCULAR CONCRETE POST AND 12 INCHES BELOW
 JV6021'THE SURFACE OF THE GROUND.  IT IS 105 FEET NORTHWEST OF THE CENTER
 JV6021'OF U.S. HIGHWAY 29, 84 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF AN
 JV6021'OLD BARN, AND 54 FEET NORTHWEST OF THE EDGE OF THE ROAD CUTBANK.
 JV6021'
 JV6021'REFERENCE MARK 1 IS A STANDARD REFERENCE MARK DISK STAMPED EMERY NO 1
 JV6021'1957, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT AND IS
 JV6021'FLUSH WITH THE GROUND.  IT IS 48 FEET SOUTH OF THE CENTER OF THE
 JV6021'DRIVEWAY, 26-1/2 FEET WEST OF A PEAR TREE 24 INCHES IN DIAMETER,
 JV6021'AND 4 FEET SOUTH OF A CONCRETE HIGHWAY RIGHT-OF-WAY MARKER.
 JV6021'
 JV6021'REFERENCE MARK 2 IS A STANDARD REFERENCE MARK DISK STAMPED EMERY NO 2
 JV6021'1957, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT AND
 JV6021'PROJECTS 5 INCHES ABOVE THE GROUND.  IT IS 45 FEET EAST OF THE
 JV6021'CENTER OF U.S. HIGHWAY 29, 19 FEET SOUTH OF THE CENTER OF A
 JV6021'DRIVEWAY, AND 6.4 FEET WEST-SOUTHWEST OF A POWERLINE POLE.
 JV6021'
 JV6021'THE AZIMUTH MARK IS A STANDARD AZIMUTH MARK DISK STAMPED RENN WSSD
 JV6021'1942, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT AND
 JV6021'PROJECTS 6 INCHES ABOVE THE GROUND.  IT IS 18 FEET NORTH OF THE
 JV6021'CENTER OF STATE HIGHWAY 216, 5 FEET EAST-SOUTHEAST OF A POWERLINE
 JV6021'POLE, AND 2.5 FEET EAST-SOUTHEAST OF A WOODEN 4 BY 4 INCH WITNESS
 JV6021'POST.
 JV6021'
 JV6021'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF U.S. HIGHWAY 29
 JV6021'AND STATE HIGHWAY 216, GO WEST ON STATE HIGHWAY 216 FOR 0.2 MILE TO
 JV6021'THE AZIMUTH MARK ON THE RIGHT.
 JV6021'
 JV6021'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES NORTHEAST
 JV6021'OF BURTONSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4184 ***********************************************************************
 JV4184  DESIGNATION -  EMMITSBURG CHRIST REFORMED CH
 JV4184  PID         -  JV4184
 JV4184  STATE/COUNTY-  MD/FREDERICK
 JV4184  COUNTRY     -  US
 JV4184  USGS QUAD   -  EMMITSBURG (2016)
 JV4184
 JV4184                         *CURRENT SURVEY CONTROL
 JV4184  ______________________________________________________________________
 JV4184* NAD 83(1991) POSITION- 39 42 18.77392(N) 077 19 42.26204(W)   ADJUSTED
 JV4184  ______________________________________________________________________
 JV4184  GEOID HEIGHT    -        -33.343 (meters)                     GEOID18
 JV4184  LAPLACE CORR    -          0.92  (seconds)                    DEFLEC18
 JV4184  HORZ ORDER      -  THIRD
 JV4184
 JV4184.The horizontal coordinates were established by classical geodetic methods
 JV4184.and adjusted by the National Geodetic Survey in January 1992.
 JV4184
 JV4184.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4184.GEOID18 height accuracy estimate available here.
 JV4184
 JV4184.Click photographs - Photos may exist for this station.
 JV4184
 JV4184.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4184
 JV4184. The following values were computed from the NAD 83(1991) position.
 JV4184
 JV4184;                    North         East     Units Scale Factor Converg.
 JV4184;SPC MD       -   226,350.679   371,834.438   MT  1.00005462   -0 12 22.0
 JV4184;SPC MD       -   742,618.85  1,219,926.82   sFT  1.00005462   -0 12 22.0
 JV4184;SPC PA S     -    41,378.427   636,157.295   MT  1.00004350   +0 16 24.7
 JV4184;SPC PA S     -   135,755.72  2,087,126.06   sFT  1.00004350   +0 16 24.7
 JV4184;UTM  18      - 4,397,631.708   300,385.723   MT  1.00009058   -1 29 16.7
 JV4184
 JV4184_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0038597631(NAD 83)
 JV4184
 JV4184                          SUPERSEDED SURVEY CONTROL
 JV4184
 JV4184  NAD 83(1986)-  39 42 18.77558(N)    077 19 42.26609(W) AD(       ) 3
 JV4184  NAD 27      -  39 42 18.43000(N)    077 19 43.31700(W) AD(       ) 3
 JV4184
 JV4184.Superseded values are not recommended for survey control.
 JV4184
 JV4184.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4184.See file dsdata.pdf to determine how the superseded data were derived.
 JV4184
 JV4184_MARKER: 90 = CHURCH SPIRE
 JV4184_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4184+SATELLITE: SATELLITE OBSERVATIONS - December 05, 2008
 JV4184
 JV4184  HISTORY     - Date     Condition        Report By
 JV4184  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4184  HISTORY     - 1990     GOOD             USPSQD
 JV4184  HISTORY     - 20081205 GOOD             GEOCAC
 JV4184
 JV4184                          STATION DESCRIPTION
 JV4184
 JV4184'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4184'THIS STATION IS A LARGE GOLD CROSS ON THE CHRIST REFORMED CHURCH
 JV4184'IN EMMITSBURG MD.  IT IS LOCATED ONE BLOCK W OF THE JUNCTION
 JV4184'OF U.S. HIGHWAY 15 AND STATE HIGHWAY 32.  THE CHURCH IS A WHITE
 JV4184'BRICK BUILDING AND HAS A 50-FOOT BRICK TOWER AT THE FRONT, ON THIS
 JV4184'THERE IS A 20-FOOT OPEN BELL TOWER, ON THIS THERE IS A TALL GRAY
 JV4184'SHINGLED SPIRE 35 FEET HIGH WITH A LARGE GOLD CROSS AT ITS APEX.
 JV4184'
 JV4184'THE TOTAL HEIGHT IS 105 FEET.
 JV4184
 JV4184                          STATION RECOVERY (1990)
 JV4184
 JV4184'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV4184'CHURCH IS NOW KNOWN AS INCARNATION UNITED CHURCH OF CHRIST CHURCH.
 JV4184'HOWEVER, THE UPPER PORTION OF THE BRICK TOWER APPEARS TO HAVE
 JV4184'REBUILT AT SOME POINT.  THE BELL TOWER DOES NOT HAVE A 35 FOOT
 JV4184'SPIRE ON TOP OF THE OPEN BELL TOWER.
 JV4184
 JV4184                          STATION RECOVERY (2008)
 JV4184
 JV4184'RECOVERY NOTE BY GEOCACHING 2008 (JLG)
 JV4184'THE DETAILS OF BENCHMARKS JV4184 AND JV4185 APPEAR TO HAVE BEEN MIXED.
 JV4184'THE FOLLOWING DESCRIBES THE DETAILS OF THE MARK LISTED AS EMMITSBURG
 JV4184'CHRIST REFORMED CHURCH.
 JV4184'THE ACTUAL MARKER OF THE CHURCH CROSS STILL EXISTS.
 JV4184'IN FEBRUARY OF 1950 THE ORIGINAL CHURCH CONTENTS AND TOWER BURNED. AT
 JV4184'THE TIME OF THE FIRE, THE BRICKS HAD BEEN WHITEWASHED.  WHEN THE
 JV4184'BUILDING WAS RESTORED AND REBUILT IN 1950, THE BRICK EXTERIOR WAS
 JV4184'SANDBLASTED BACK TO ITS ORIGINAL RED COLOR.
 JV4184'THE BELLTOWER WAS SAVED FROM THE FIRE, BUT THE SPIRE BURNED
 JV4184'COMPLETELY.  THE CONGREGATION PUT A SMALL ROOF ON THE BELLTOWER AND
 JV4184'RESTORED THE CROSS ON THE TOP.  THE NAME OF THE CHURCH WAS CHANGED IN
 JV4184'THE LATE 1950'S TO INCARNATION UNITED CHURCH OF CHRIST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4177 ***********************************************************************
 JV4177  DESIGNATION -  EMMITSBURG MT ST MARYS CHAPEL
 JV4177  PID         -  JV4177
 JV4177  STATE/COUNTY-  MD/FREDERICK
 JV4177  COUNTRY     -  US
 JV4177  USGS QUAD   -  EMMITSBURG (2016)
 JV4177
 JV4177                         *CURRENT SURVEY CONTROL
 JV4177  ______________________________________________________________________
 JV4177* NAD 83(1991) POSITION- 39 40 52.87736(N) 077 21 14.07161(W)   ADJUSTED
 JV4177  ______________________________________________________________________
 JV4177  GEOID HEIGHT    -        -33.260 (meters)                     GEOID18
 JV4177  LAPLACE CORR    -         -1.63  (seconds)                    DEFLEC18
 JV4177  HORZ ORDER      -  THIRD
 JV4177
 JV4177.The horizontal coordinates were established by classical geodetic methods
 JV4177.and adjusted by the National Geodetic Survey in January 1992.
 JV4177
 JV4177.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4177.GEOID18 height accuracy estimate available here.
 JV4177
 JV4177.Click photographs - Photos may exist for this station.
 JV4177
 JV4177.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4177
 JV4177. The following values were computed from the NAD 83(1991) position.
 JV4177
 JV4177;                    North         East     Units Scale Factor Converg.
 JV4177;SPC MD       -   223,709.573   369,636.957   MT  1.00004867   -0 13 19.7
 JV4177;SPC MD       -   733,953.82  1,212,717.25   sFT  1.00004867   -0 13 19.7
 JV4177;SPC PA S     -    38,719.042   633,982.000   MT  1.00004895   +0 15 25.1
 JV4177;SPC PA S     -   127,030.72  2,079,989.28   sFT  1.00004895   +0 15 25.1
 JV4177;UTM  18      - 4,395,040.298   298,129.619   MT  1.00010174   -1 30 12.7
 JV4177
 JV4177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9812995040(NAD 83)
 JV4177
 JV4177                          SUPERSEDED SURVEY CONTROL
 JV4177
 JV4177  NAD 83(1986)-  39 40 52.87920(N)    077 21 14.07666(W) AD(       ) 3
 JV4177  NAD 27      -  39 40 52.53000(N)    077 21 15.13000(W) AD(       ) 3
 JV4177
 JV4177.Superseded values are not recommended for survey control.
 JV4177
 JV4177.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4177.See file dsdata.pdf to determine how the superseded data were derived.
 JV4177
 JV4177_MARKER: 91 = CHURCH CROSS
 JV4177
 JV4177  HISTORY     - Date     Condition        Report By
 JV4177  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4177  HISTORY     - 1988     GOOD             USPSQD
 JV4177  HISTORY     - 1990     GOOD             USPSQD
 JV4177  HISTORY     - 20050430 GOOD             GEOCAC
 JV4177
 JV4177                          STATION DESCRIPTION
 JV4177
 JV4177'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4177'THIS STATION IS A LARGE GOLD CROSS ON THE CHAPEL AT THE
 JV4177'MT. ST. MARYS COLLEGE OF EMMITSBURG, MD.  IT IS A LARGE STONE
 JV4177'TOWER ON THE E FRONT OF THE CHAPEL AND IS ABOUT 70 FEET HIGH, ON
 JV4177'THIS THERE IS A TALL CONICAL-SHAPED SLATE ROOFED SPIRE WHICH HAS
 JV4177'THE GOLD CROSS AT ITS APEX.
 JV4177'
 JV4177'THE TOTAL HEIGHT IS ABOUT 100 FEET.
 JV4177
 JV4177                          STATION RECOVERY (1988)
 JV4177
 JV4177'RECOVERY NOTE BY US POWER SQUADRON 1988 (WPG)
 JV4177'RECOVERED IN GOOD CONDITION.
 JV4177
 JV4177                          STATION RECOVERY (1990)
 JV4177
 JV4177'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV4177'RECOVERED IN GOOD CONDITION.
 JV4177
 JV4177                          STATION RECOVERY (2005)
 JV4177
 JV4177'RECOVERY NOTE BY GEOCACHING 2005 (MFL)
 JV4177'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4185 ***********************************************************************
 JV4185  DESIGNATION -  EMMITSBURG SILAS EVAN LUTH CH
 JV4185  PID         -  JV4185
 JV4185  STATE/COUNTY-  MD/FREDERICK
 JV4185  COUNTRY     -  US
 JV4185  USGS QUAD   -  EMMITSBURG (2016)
 JV4185
 JV4185                         *CURRENT SURVEY CONTROL
 JV4185  ______________________________________________________________________
 JV4185* NAD 83(1991) POSITION- 39 42 20.16033(N) 077 19 38.99855(W)   ADJUSTED
 JV4185  ______________________________________________________________________
 JV4185  GEOID HEIGHT    -        -33.343 (meters)                     GEOID18
 JV4185  LAPLACE CORR    -          0.96  (seconds)                    DEFLEC18
 JV4185  HORZ ORDER      -  THIRD
 JV4185
 JV4185.The horizontal coordinates were established by classical geodetic methods
 JV4185.and adjusted by the National Geodetic Survey in January 1992.
 JV4185
 JV4185.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4185.GEOID18 height accuracy estimate available here.
 JV4185
 JV4185.Click photographs - Photos may exist for this station.
 JV4185
 JV4185.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4185
 JV4185. The following values were computed from the NAD 83(1991) position.
 JV4185
 JV4185;                    North         East     Units Scale Factor Converg.
 JV4185;SPC MD       -   226,393.161   371,912.338   MT  1.00005472   -0 12 20.0
 JV4185;SPC MD       -   742,758.23  1,220,182.40   sFT  1.00005472   -0 12 20.0
 JV4185;SPC PA S     -    41,421.559   636,234.836   MT  1.00004341   +0 16 26.8
 JV4185;SPC PA S     -   135,897.23  2,087,380.46   sFT  1.00004341   +0 16 26.8
 JV4185;UTM  18      - 4,397,672.438   300,464.558   MT  1.00009020   -1 29 14.6
 JV4185
 JV4185_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0046497672(NAD 83)
 JV4185
 JV4185                          SUPERSEDED SURVEY CONTROL
 JV4185
 JV4185  NAD 83(1986)-  39 42 20.16199(N)    077 19 39.00258(W) AD(       ) 3
 JV4185  NAD 27      -  39 42 19.82000(N)    077 19 40.06000(W) AD(       ) 3
 JV4185
 JV4185.Superseded values are not recommended for survey control.
 JV4185
 JV4185.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4185.See file dsdata.pdf to determine how the superseded data were derived.
 JV4185
 JV4185_MARKER: 91 = CHURCH CROSS
 JV4185
 JV4185  HISTORY     - Date     Condition        Report By
 JV4185  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4185  HISTORY     - 1990     GOOD             USPSQD
 JV4185
 JV4185                          STATION DESCRIPTION
 JV4185
 JV4185'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4185'THIS STATION IS A TALL WHITE SPIRE ON THE SILAS EVANGELICAL LUTHERAN
 JV4185'CHURCH IN EMMITSBURG, MARYLAND, LOCATED ONE BLOCK W OF THE
 JV4185'JUNCTION OF U.S. HIGHWAY 15 AND STATE HIGHWAY 32.  THE CHURCH IS
 JV4185'BUILT OF BROWN STONE AND HAS A BROWN STONE TOWER 50 FEET HIGH
 JV4185'ON WHICH THERE IS A WHITE WOOD BELFRY 20 FEET HIGH, ON TOP OF
 JV4185'WHICH THERE IS A WHITE SHINGLED SPIRE ABOUT 30 FEET HIGH WITH AN
 JV4185'ORNAMENTAL LIGHTING ROD AT ITS APEX.
 JV4185'
 JV4185'THE CHURCH WAS BUILT IN 1930.
 JV4185'
 JV4185'THE TOTAL HEIGHT IS ABOUT 150 FEET.
 JV4185
 JV4185                          STATION RECOVERY (1990)
 JV4185
 JV4185'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV4185'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4180 ***********************************************************************
 JV4180  DESIGNATION -  EMMITSBURG ST JOSEPHS COLLEGE
 JV4180  PID         -  JV4180
 JV4180  STATE/COUNTY-  MD/FREDERICK
 JV4180  COUNTRY     -  US
 JV4180  USGS QUAD   -  EMMITSBURG (2016)
 JV4180
 JV4180                         *CURRENT SURVEY CONTROL
 JV4180  ______________________________________________________________________
 JV4180* NAD 83(1991) POSITION- 39 41 43.39079(N) 077 19 37.07080(W)   ADJUSTED
 JV4180  ______________________________________________________________________
 JV4180  GEOID HEIGHT    -        -33.309 (meters)                     GEOID18
 JV4180  LAPLACE CORR    -          0.83  (seconds)                    DEFLEC18
 JV4180  HORZ ORDER      -  THIRD
 JV4180
 JV4180.The horizontal coordinates were established by classical geodetic methods
 JV4180.and adjusted by the National Geodetic Survey in January 1992.
 JV4180
 JV4180.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4180.GEOID18 height accuracy estimate available here.
 JV4180
 JV4180.Click photographs - Photos may exist for this station.
 JV4180
 JV4180.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4180
 JV4180. The following values were computed from the NAD 83(1991) position.
 JV4180
 JV4180;                    North         East     Units Scale Factor Converg.
 JV4180;SPC MD       -   225,258.920   371,954.202   MT  1.00005215   -0 12 18.8
 JV4180;SPC MD       -   739,036.97  1,220,319.74   sFT  1.00005215   -0 12 18.8
 JV4180;SPC PA S     -    40,287.719   636,286.193   MT  1.00004572   +0 16 28.1
 JV4180;SPC PA S     -   132,177.29  2,087,548.95   sFT  1.00004572   +0 16 28.1
 JV4180;UTM  18      - 4,396,537.503   300,481.041   MT  1.00009012   -1 29 12.2
 JV4180
 JV4180_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0048196537(NAD 83)
 JV4180
 JV4180                          SUPERSEDED SURVEY CONTROL
 JV4180
 JV4180  NAD 83(1986)-  39 41 43.39245(N)    077 19 37.07509(W) AD(       ) 3
 JV4180  NAD 27      -  39 41 43.04000(N)    077 19 38.12000(W) AD(       ) 3
 JV4180
 JV4180.Superseded values are not recommended for survey control.
 JV4180
 JV4180.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4180.See file dsdata.pdf to determine how the superseded data were derived.
 JV4180
 JV4180
 JV4180  HISTORY     - Date     Condition        Report By
 JV4180  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4180  HISTORY     - 1990     GOOD             USPSQD
 JV4180  HISTORY     - 20050830 GOOD             GEOCAC
 JV4180
 JV4180                          STATION DESCRIPTION
 JV4180
 JV4180'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4180'THIS STATION IS A CROSS ON THE TOWER OF THE MAIN BUILDING OF THE
 JV4180'ST. JOSEPH COLLEGE, 0.5 MILE S OF EMMITSBURG AND 0.1 MILE E OF
 JV4180'THE CENTER LINE OF U.S. HIGHWAY 15.
 JV4180'
 JV4180'THE BUILDING IS OF BROWN BRICK ON WHICH THERE IS A BROWN
 JV4180'BRICK TOWER ABOUT 30 FEET HIGH.  ON THIS THERE IS A 10 FOOT DOME
 JV4180'PAINTED GREEN AND HAS A CROSS AT ITS APEX.  THE TOTAL HEIGHT IS
 JV4180'ABOUT 95 FEET.
 JV4180
 JV4180                          STATION RECOVERY (1990)
 JV4180
 JV4180'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV4180'RECOVERED IN GOOD CONDITION.
 JV4180
 JV4180                          STATION RECOVERY (2005)
 JV4180
 JV4180'RECOVERY NOTE BY GEOCACHING 2005 (RCF)
 JV4180'THE BUILDING IS NOW PART OF THE DEPT. OF HOMELAND SECURITY'S NATIONAL
 JV4180'EMERGENCY TRAINING CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4176 ***********************************************************************
 JV4176  DESIGNATION -  EMMITSBURG ST MARY DUBOIS HALL
 JV4176  PID         -  JV4176
 JV4176  STATE/COUNTY-  MD/FREDERICK
 JV4176  COUNTRY     -  US
 JV4176  USGS QUAD   -  EMMITSBURG (2016)
 JV4176
 JV4176                         *CURRENT SURVEY CONTROL
 JV4176  ______________________________________________________________________
 JV4176* NAD 83(1991) POSITION- 39 40 54.19799(N) 077 21 14.44207(W)   ADJUSTED
 JV4176  ______________________________________________________________________
 JV4176  GEOID HEIGHT    -        -33.261 (meters)                     GEOID18
 JV4176  LAPLACE CORR    -         -1.66  (seconds)                    DEFLEC18
 JV4176  HORZ ORDER      -  THIRD
 JV4176
 JV4176.The horizontal coordinates were established by classical geodetic methods
 JV4176.and adjusted by the National Geodetic Survey in January 1992.
 JV4176
 JV4176.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4176.GEOID18 height accuracy estimate available here.
 JV4176
 JV4176.Click photographs - Photos may exist for this station.
 JV4176
 JV4176.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4176
 JV4176. The following values were computed from the NAD 83(1991) position.
 JV4176
 JV4176;                    North         East     Units Scale Factor Converg.
 JV4176;SPC MD       -   223,750.339   369,628.286   MT  1.00004876   -0 13 19.9
 JV4176;SPC MD       -   734,087.57  1,212,688.80   sFT  1.00004876   -0 13 19.9
 JV4176;SPC PA S     -    38,759.734   633,972.988   MT  1.00004887   +0 15 24.9
 JV4176;SPC PA S     -   127,164.23  2,079,959.71   sFT  1.00004887   +0 15 24.9
 JV4176;UTM  18      - 4,395,081.250   298,121.862   MT  1.00010178   -1 30 12.9
 JV4176
 JV4176_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9812195081(NAD 83)
 JV4176
 JV4176                          SUPERSEDED SURVEY CONTROL
 JV4176
 JV4176  NAD 83(1986)-  39 40 54.19981(N)    077 21 14.44639(W) AD(       ) 3
 JV4176  NAD 27      -  39 40 53.85000(N)    077 21 15.50000(W) AD(       ) 3
 JV4176
 JV4176.Superseded values are not recommended for survey control.
 JV4176
 JV4176.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4176.See file dsdata.pdf to determine how the superseded data were derived.
 JV4176
 JV4176
 JV4176  HISTORY     - Date     Condition        Report By
 JV4176  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4176  HISTORY     - 1988     GOOD             USPSQD
 JV4176  HISTORY     - 1990     GOOD             USPSQD
 JV4176  HISTORY     - 20050430 GOOD             GEOCAC
 JV4176
 JV4176                          STATION DESCRIPTION
 JV4176
 JV4176'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4176'THIS STATION IS A LARGE CROSS ON DUBOIS HALL AT THE MT. ST. MARYS
 JV4176'COLLEGE S OF EMMITSBURG, MD.  THE BUILDING IS OF STONE ON WHICH
 JV4176'THERE IS A TALL WHITE TOWER ABOUT 30 FEET HIGH WHICH HAS A CLOCK
 JV4176'DIAL ON ALL FOUR SIDES NEAR THE TOP.  ON THIS TOWER THERE IS AN
 JV4176'OPEN BELFRY ABOUT 20 FEET HIGH ON WHICH THERE IS A TALL WHITE
 JV4176'DOME AND HAS A LARGE GOLD CROSS AT ITS APEX.  THE TOTAL HEIGHT
 JV4176'IS ABOUT 100 FEET.
 JV4176
 JV4176                          STATION RECOVERY (1988)
 JV4176
 JV4176'RECOVERY NOTE BY US POWER SQUADRON 1988 (WPG)
 JV4176'RECOVERED IN GOOD CONDITION.
 JV4176
 JV4176                          STATION RECOVERY (1990)
 JV4176
 JV4176'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV4176'RECOVERED IN GOOD CONDITION.
 JV4176
 JV4176                          STATION RECOVERY (2005)
 JV4176
 JV4176'RECOVERY NOTE BY GEOCACHING 2005 (MFL)
 JV4176'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4182 ***********************************************************************
 JV4182  DESIGNATION -  EMMITSBURG ST MARY ADMIN BLDG
 JV4182  PID         -  JV4182
 JV4182  STATE/COUNTY-  MD/FREDERICK
 JV4182  COUNTRY     -  US
 JV4182  USGS QUAD   -  EMMITSBURG (2016)
 JV4182
 JV4182                         *CURRENT SURVEY CONTROL
 JV4182  ______________________________________________________________________
 JV4182* NAD 83(1991) POSITION- 39 40 56.82135(N) 077 21 10.26379(W)   ADJUSTED
 JV4182  ______________________________________________________________________
 JV4182  GEOID HEIGHT    -        -33.264 (meters)                     GEOID18
 JV4182  LAPLACE CORR    -         -1.66  (seconds)                    DEFLEC18
 JV4182  HORZ ORDER      -  THIRD
 JV4182
 JV4182.The horizontal coordinates were established by classical geodetic methods
 JV4182.and adjusted by the National Geodetic Survey in January 1992.
 JV4182
 JV4182.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4182.GEOID18 height accuracy estimate available here.
 JV4182
 JV4182.Click photographs - Photos may exist for this station.
 JV4182
 JV4182.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4182
 JV4182. The following values were computed from the NAD 83(1991) position.
 JV4182
 JV4182;                    North         East     Units Scale Factor Converg.
 JV4182;SPC MD       -   223,830.864   369,728.173   MT  1.00004894   -0 13 17.3
 JV4182;SPC MD       -   734,351.76  1,213,016.51   sFT  1.00004894   -0 13 17.3
 JV4182;SPC PA S     -    38,841.092   634,072.198   MT  1.00004870   +0 15 27.6
 JV4182;SPC PA S     -   127,431.15  2,080,285.20   sFT  1.00004870   +0 15 27.6
 JV4182;UTM  18      - 4,395,159.525   298,223.529   MT  1.00010127   -1 30 10.4
 JV4182
 JV4182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9822395159(NAD 83)
 JV4182
 JV4182                          SUPERSEDED SURVEY CONTROL
 JV4182
 JV4182  NAD 83(1986)-  39 40 56.82316(N)    077 21 10.26811(W) AD(       ) 3
 JV4182  NAD 27      -  39 40 56.47000(N)    077 21 11.32000(W) AD(       ) 3
 JV4182
 JV4182.Superseded values are not recommended for survey control.
 JV4182
 JV4182.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4182.See file dsdata.pdf to determine how the superseded data were derived.
 JV4182
 JV4182
 JV4182  HISTORY     - Date     Condition        Report By
 JV4182  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4182  HISTORY     - 1988     MARK NOT FOUND   USPSQD
 JV4182  HISTORY     - 1990     GOOD             USPSQD
 JV4182  HISTORY     - 20050430 GOOD             GEOCAC
 JV4182
 JV4182                          STATION DESCRIPTION
 JV4182
 JV4182'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4182'THIS STATION IS A LARGE GOLD CROSS ON THE ADMINISTRATION BUILDING
 JV4182'AT THE MT. ST. MARYS COLLEGE S OF EMMITSBURG, MD.  THERE IS A TALL
 JV4182'OPEN TOWER ON THE ADMINISTRATION BUILDING ON WHICH THERE IS A
 JV4182'CONICAL ROOF WITH A LARGE GOLD CROSS AT ITS APEX.  THE TOTAL
 JV4182'HEIGHT IS ABOUT 135 FEET.
 JV4182
 JV4182                          STATION RECOVERY (1988)
 JV4182
 JV4182'RECOVERY NOTE BY US POWER SQUADRON 1988 (WPG)
 JV4182'MARK NOT FOUND.
 JV4182
 JV4182                          STATION RECOVERY (1990)
 JV4182
 JV4182'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV4182'RECOVERED IN GOOD CONDITION.
 JV4182
 JV4182                          STATION RECOVERY (2005)
 JV4182
 JV4182'RECOVERY NOTE BY GEOCACHING 2005 (MFL)
 JV4182'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4996 ***********************************************************************
 JV4996  DESIGNATION -  EMORY
 JV4996  PID         -  JV4996
 JV4996  STATE/COUNTY-  MD/KENT
 JV4996  COUNTRY     -  US
 JV4996  USGS QUAD   -  CHESTERTOWN (2017)
 JV4996
 JV4996                         *CURRENT SURVEY CONTROL
 JV4996  ______________________________________________________________________
 JV4996* NAD 83(1991) POSITION- 39 10 59.77271(N) 076 04 03.60371(W)   ADJUSTED
 JV4996* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV4996  ______________________________________________________________________
 JV4996  GEOID HEIGHT    -        -33.478 (meters)                     GEOID18
 JV4996  LAPLACE CORR    -         -2.41  (seconds)                    DEFLEC18
 JV4996  HORZ ORDER      -  THIRD
 JV4996
 JV4996.The horizontal coordinates were established by classical geodetic methods
 JV4996.and adjusted by the National Geodetic Survey in January 1992.
 JV4996
 JV4996.The orthometric height was scaled from a topographic map.
 JV4996
 JV4996.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4996.GEOID18 height accuracy estimate available here.
 JV4996
 JV4996.Click photographs - Photos may exist for this station.
 JV4996
 JV4996.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4996
 JV4996. The following values were computed from the NAD 83(1991) position.
 JV4996
 JV4996;                    North         East     Units Scale Factor Converg.
 JV4996;SPC MD       -   168,762.831   480,551.546   MT  0.99996421   +0 35 06.6
 JV4996;SPC MD       -   553,682.72  1,576,609.53   sFT  0.99996421   +0 35 06.6
 JV4996;UTM  18      - 4,337,657.453   407,786.667   MT  0.99970470   -0 40 28.6
 JV4996
 JV4996!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4996!SPC MD       -   1.00000498  x   0.99996421  =   0.99996919
 JV4996!UTM  18      -   1.00000498  x   0.99970470  =   0.99970968
 JV4996
 JV4996:                Primary Azimuth Mark                     Grid Az
 JV4996:SPC MD       -  PEAR                                     329 09 06.7
 JV4996:UTM  18      -  PEAR                                     330 24 41.9
 JV4996
 JV4996_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0778637657(NAD 83)
 JV4996
 JV4996|---------------------------------------------------------------------|
 JV4996| PID    Reference Object                     Distance      Geod. Az  |
 JV4996|                                                           dddmmss.s |
 JV4996| JV4976 SKIPPERS WINDMILL                   APPROX. 1.3 KM 0335419.0 |
 JV4996| JV4981 PEAR                                APPROX. 0.8 KM 3294413.3 |
 JV4996| JV4991 CHESTERTOWN M P CHURCH SPIRE        APPROX. 3.0 KM 3575558.3 |
 JV4996| JV4999 CHESTERTOWN ME CHURCH SPIRE         APPROX. 3.0 KM 3591710.7 |
 JV4996| JV4995 CHESTERTOWN WASH COLL CUP FLAG      APPROX. 3.8 KM 3595241.8 |
 JV4996|---------------------------------------------------------------------|
 JV4996
 JV4996                          SUPERSEDED SURVEY CONTROL
 JV4996
 JV4996  NAD 83(1986)-  39 10 59.76517(N)    076 04 03.61571(W) AD(       ) 3
 JV4996  NAD 27      -  39 10 59.37500(N)    076 04 04.80000(W) AD(       ) 3
 JV4996  USSD        -  39 10 59.81400(N)    076 04 04.57800(W) AD(       ) 3
 JV4996
 JV4996.Superseded values are not recommended for survey control.
 JV4996
 JV4996.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4996.See file dsdata.pdf to determine how the superseded data were derived.
 JV4996
 JV4996_MARKER: N = NAIL
 JV4996_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4996_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4996
 JV4996  HISTORY     - Date     Condition        Report By
 JV4996  HISTORY     - 1909     MONUMENTED       CGS
 JV4996  HISTORY     - 1938     GOOD             CGS
 JV4996  HISTORY     - 1990     GOOD             MDDNR
 JV4996
 JV4996                          STATION DESCRIPTION
 JV4996
 JV4996'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JV4996'STATION IS ON THE SW SIDE OF CHESTER RIVER, ON A HILL W OF
 JV4996'PINEY GROVE WHARF, ON LAND BELONGING TO A MR. EMORY, WHOSE
 JV4996'HOUSE STANDS ABOUT 300 METERS SW OF THE STATION.  STATION IS
 JV4996'ABOUT 25 METERS BACK FROM HIGH-WATER MARK AND ABOUT 30 FEET ABOVE
 JV4996'THE RIVER.
 JV4996'
 JV4996'THE STATION IS MARKED BY A BURIED WHITE QUART BOTTLE AND A NAIL
 JV4996'IN CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE
 JV4996'TOP OF A 4-INCH DRAINTILE AT THE SURFACE OF THE GROUND.  THE
 JV4996'REFERENCE MARK IS A QUART BOTTLE BURIED 3 FEET AND A NAIL IN
 JV4996'CONCRETE IN THE TOP OF A 3-INCH TILE DRAIN PIPE AT THE SURFACE
 JV4996'OF THE GROUND.  REFERENCE MARK IS 8.95 METERS (29.36 FEET) FROM
 JV4996'THE STATION S 42 DEG 59 MIN E.
 JV4996
 JV4996                          STATION RECOVERY (1938)
 JV4996
 JV4996'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV4996'STATION WAS FOUND AS DESCRIBED IN THE ORIGINAL DESCRIPTION AND
 JV4996'IN GOOD CONDITION.  REFERENCE MARKS COULD NOT BE LOCATED.
 JV4996
 JV4996                          STATION RECOVERY (1990)
 JV4996
 JV4996'RECOVERY NOTE BY MD DEPT OF NAT RES 1990 (LW)
 JV4996'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6748 ***********************************************************************
 JV6748  DESIGNATION -  EMORY
 JV6748  PID         -  JV6748
 JV6748  STATE/COUNTY-  MD/HARFORD
 JV6748  COUNTRY     -  US
 JV6748  USGS QUAD   -  DELTA (2019)
 JV6748
 JV6748                         *CURRENT SURVEY CONTROL
 JV6748  ______________________________________________________________________
 JV6748* NAD 83(2011) POSITION- 39 39 02.24468(N) 076 20 22.18805(W)   ADJUSTED
 JV6748* NAD 83(2011) ELLIP HT-   101.816 (meters)        (06/27/12)   ADJUSTED
 JV6748* NAD 83(2011) EPOCH   -  2010.00
 JV6748* NAVD 88 ORTHO HEIGHT -   134.6   (meters)      442.    (feet) VERTCON3
 JV6748  ______________________________________________________________________
 JV6748  GEOID HEIGHT    -        -32.730 (meters)                     GEOID18
 JV6748  NAD 83(2011) X  -  1,161,388.606 (meters)                     COMP
 JV6748  NAD 83(2011) Y  - -4,778,520.906 (meters)                     COMP
 JV6748  NAD 83(2011) Z  -  4,048,258.524 (meters)                     COMP
 JV6748  LAPLACE CORR    -         -2.32  (seconds)                    DEFLEC18
 JV6748
 JV6748  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6748  Standards:
 JV6748         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6748            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6748  -------------------------------------------------------------------
 JV6748  NETWORK    1.59   4.45           0.67   0.59   2.27      0.44113570
 JV6748  -------------------------------------------------------------------
 JV6748  Click here for local accuracies and other accuracy information.
 JV6748
 JV6748.The horizontal coordinates were established by GPS observations
 JV6748.and adjusted by the National Geodetic Survey in June 2012.
 JV6748
 JV6748.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6748.been affixed to the stable North American tectonic plate. See 
 JV6748.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6748
 JV6748.The horizontal coordinates are valid at the epoch date displayed above
 JV6748.which is a decimal equivalence of Year/Month/Day.
 JV6748
 JV6748.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6748.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6748
 JV6748.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6748.GEOID18 height accuracy estimate available here.
 JV6748
 JV6748.Click photographs - Photos may exist for this station.
 JV6748
 JV6748.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6748
 JV6748.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6748
 JV6748.The ellipsoidal height was determined by GPS observations
 JV6748.and is referenced to NAD 83.
 JV6748
 JV6748. The following values were computed from the NAD 83(2011) position.
 JV6748
 JV6748;                    North         East     Units Scale Factor Converg.
 JV6748;SPC MD       -   220,443.613   456,691.172   MT  1.00004126   +0 24 52.4
 JV6748;SPC MD       -   723,238.75  1,498,327.62   sFT  1.00004126   +0 24 52.4
 JV6748;UTM  18      - 4,389,838.305   385,078.410   MT  0.99976260   -0 51 17.4
 JV6748
 JV6748!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6748!SPC MD       -   0.99998403  x   1.00004126  =   1.00002529
 JV6748!UTM  18      -   0.99998403  x   0.99976260  =   0.99974663
 JV6748
 JV6748:                Primary Azimuth Mark                     Grid Az
 JV6748:SPC MD       -  EMORY AZ MK                              266 32 30.8
 JV6748:UTM  18      -  EMORY AZ MK                              267 48 40.6
 JV6748
 JV6748_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8507889838(NAD 83)
 JV6748
 JV6748|---------------------------------------------------------------------|
 JV6748| PID    Reference Object                     Distance      Geod. Az  |
 JV6748|                                                           dddmmss.s |
 JV6748| JV6749 EMORY AZ MK                         423.745 METERS 2665723.2 |
 JV6748|---------------------------------------------------------------------|
 JV6748
 JV6748                          SUPERSEDED SURVEY CONTROL
 JV6748
 JV6748  NAD 83(2007)-  39 39 02.24495(N)    076 20 22.18876(W) AD(2002.00) 0
 JV6748  ELLIP H (02/10/07)  101.836  (m)                       GP(2002.00)    
 JV6748  ELLIP H (09/18/02)  101.852  (m)                       GP(       ) 4 2
 JV6748  NAD 83(1991)-  39 39 02.24491(N)    076 20 22.18831(W) AD(       ) 1
 JV6748  ELLIP H (01/27/92)  101.850  (m)                       GP(       ) 4 1
 JV6748  NAD 83(1986)-  39 39 02.23777(N)    076 20 22.19464(W) AD(       ) 1
 JV6748  NGVD 29 (06/18/91)  134.8    (m)  UNKNOWN  model used  GPS OBS        
 JV6748
 JV6748.Superseded values are not recommended for survey control.
 JV6748
 JV6748.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6748.See file dsdata.pdf to determine how the superseded data were derived.
 JV6748
 JV6748_MARKER: DD = SURVEY DISK
 JV6748_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6748_STAMPING: 84 EMORY 1989
 JV6748_MARK LOGO: MD-025
 JV6748_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6748_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6748+STABILITY: SURFACE MOTION
 JV6748_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6748+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2007
 JV6748
 JV6748  HISTORY     - Date     Condition        Report By
 JV6748  HISTORY     - 1989     MONUMENTED       RDA
 JV6748  HISTORY     - 20010421 GOOD             USPSQD
 JV6748  HISTORY     - 20070224 GOOD             INDIV
 JV6748
 JV6748                          STATION DESCRIPTION
 JV6748
 JV6748'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6748'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6748'5 MILES NORTH OF THE VILLAGE OF HICKORY.
 JV6748'TO REACH THE STATION FROM THE INTERSECTION OF FEDERAL HIGHWAY 1 AND
 JV6748'STATE HIGHWAY 543 IN HICKORY PROCEED NORTH ALONG HIGHWAY 543 5.14
 JV6748'MILES TO ITS INTERSECTION WITH CHERRY HILL ROAD.  TURN LEFT AND
 JV6748'PROCEED WEST ALONG CHERRY HILL ROAD 0.21 MILES TO THE STATION ON THE
 JV6748'LEFT.
 JV6748'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6748'ABOUT 1 INCH BELOW GROUND STAMPED 84 EMORY 1989.  THE STATION IS 22.0
 JV6748'FEET SOUTH OF THE CENTERLINE OF CHERRY HILL ROAD, 13.3 FEET WEST OF
 JV6748'CEL AND P COMPANY POWER POLE NUMBER 767, AND 106.0 FEET EAST OF CEL
 JV6748'AND P COMPANY POWER POLE NUMBER 766.
 JV6748
 JV6748                          STATION RECOVERY (2001)
 JV6748
 JV6748'RECOVERY NOTE BY US POWER SQUADRON 2001 (LB)
 JV6748'RECOVERED IN GOOD CONDITION.
 JV6748
 JV6748                          STATION RECOVERY (2007)
 JV6748
 JV6748'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (TRA)
 JV6748'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6749 ***********************************************************************
 JV6749  DESIGNATION -  EMORY AZ MK
 JV6749  PID         -  JV6749
 JV6749  STATE/COUNTY-  MD/HARFORD
 JV6749  COUNTRY     -  US
 JV6749  USGS QUAD   -  DELTA (2019)
 JV6749
 JV6749                         *CURRENT SURVEY CONTROL
 JV6749  ______________________________________________________________________
 JV6749* NAD 83(2011) POSITION- 39 39 01.51480(N) 076 20 39.93675(W)   ADJUSTED
 JV6749* NAD 83(2011) ELLIP HT-    98.437 (meters)        (06/27/12)   ADJUSTED
 JV6749* NAD 83(2011) EPOCH   -  2010.00
 JV6749* NAVD 88 ORTHO HEIGHT -   131.2   (meters)      430.    (feet) VERTCON3
 JV6749  ______________________________________________________________________
 JV6749  GEOID HEIGHT    -        -32.724 (meters)                     GEOID18
 JV6749  NAD 83(2011) X  -  1,160,980.196 (meters)                     COMP
 JV6749  NAD 83(2011) Y  - -4,778,632.253 (meters)                     COMP
 JV6749  NAD 83(2011) Z  -  4,048,239.036 (meters)                     COMP
 JV6749  LAPLACE CORR    -         -2.37  (seconds)                    DEFLEC18
 JV6749
 JV6749  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6749  Standards:
 JV6749         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6749            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6749  -------------------------------------------------------------------
 JV6749  NETWORK    2.19   4.66           0.99   0.66   2.38      0.56749717
 JV6749  -------------------------------------------------------------------
 JV6749  Click here for local accuracies and other accuracy information.
 JV6749
 JV6749.The horizontal coordinates were established by GPS observations
 JV6749.and adjusted by the National Geodetic Survey in June 2012.
 JV6749
 JV6749.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6749.been affixed to the stable North American tectonic plate. See 
 JV6749.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6749
 JV6749.The horizontal coordinates are valid at the epoch date displayed above
 JV6749.which is a decimal equivalence of Year/Month/Day.
 JV6749
 JV6749.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6749.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6749
 JV6749.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6749.GEOID18 height accuracy estimate available here.
 JV6749
 JV6749.Click photographs - Photos may exist for this station.
 JV6749
 JV6749.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6749
 JV6749.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6749
 JV6749.The ellipsoidal height was determined by GPS observations
 JV6749.and is referenced to NAD 83.
 JV6749
 JV6749. The following values were computed from the NAD 83(2011) position.
 JV6749
 JV6749;                    North         East     Units Scale Factor Converg.
 JV6749;SPC MD       -   220,418.052   456,268.181   MT  1.00004121   +0 24 41.3
 JV6749;SPC MD       -   723,154.89  1,496,939.86   sFT  1.00004121   +0 24 41.3
 JV6749;UTM  18      - 4,389,822.126   384,655.075   MT  0.99976380   -0 51 28.7
 JV6749
 JV6749!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6749!SPC MD       -   0.99998456  x   1.00004121  =   1.00002577
 JV6749!UTM  18      -   0.99998456  x   0.99976380  =   0.99974836
 JV6749
 JV6749:                Primary Azimuth Mark                     Grid Az
 JV6749:SPC MD       -  EMORY                                    086 32 30.6
 JV6749:UTM  18      -  EMORY                                    087 48 40.6
 JV6749
 JV6749_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8465589822(NAD 83)
 JV6749
 JV6749|---------------------------------------------------------------------|
 JV6749| PID    Reference Object                     Distance      Geod. Az  |
 JV6749|                                                           dddmmss.s |
 JV6749| JV6748 EMORY                               423.745 METERS 0865711.9 |
 JV6749|---------------------------------------------------------------------|
 JV6749
 JV6749                          SUPERSEDED SURVEY CONTROL
 JV6749
 JV6749  NAD 83(2007)-  39 39 01.51506(N)    076 20 39.93747(W) AD(2002.00) 0
 JV6749  ELLIP H (02/10/07)   98.458  (m)                       GP(2002.00)    
 JV6749  ELLIP H (09/18/02)   98.470  (m)                       GP(       ) 4 2
 JV6749  NAD 83(1991)-  39 39 01.51498(N)    076 20 39.93704(W) AD(       ) 1
 JV6749  ELLIP H (01/27/92)   98.469  (m)                       GP(       ) 4 1
 JV6749  NAD 83(1986)-  39 39 01.50787(N)    076 20 39.94336(W) AD(       ) 1
 JV6749  NGVD 29 (06/18/91)  131.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6749
 JV6749.Superseded values are not recommended for survey control.
 JV6749
 JV6749.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6749.See file dsdata.pdf to determine how the superseded data were derived.
 JV6749
 JV6749_MARKER: DZ = AZIMUTH MARK DISK
 JV6749_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6749_STAMPING: 84 EMORY 1989
 JV6749_MARK LOGO: MD-025
 JV6749_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6749_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6749+STABILITY: SURFACE MOTION
 JV6749_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6749+SATELLITE: SATELLITE OBSERVATIONS - April 21, 2001
 JV6749
 JV6749  HISTORY     - Date     Condition        Report By
 JV6749  HISTORY     - 1989     MONUMENTED       RDA
 JV6749  HISTORY     - 19900103 GOOD
 JV6749  HISTORY     - 20010421 GOOD             USPSQD
 JV6749
 JV6749                          STATION DESCRIPTION
 JV6749
 JV6749'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6749'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED WEST ALONG CHERRY
 JV6749'HILL ROAD 0.24 MILES TO THE MARK ON THE RIGHT.
 JV6749'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6749'ABOUT 1 INCH BELOW GROUND STAMPED 84 EMORY 1989.  THE MARK IS 17.0
 JV6749'FEET NORTH OF THE CENTERLINE OF CHERRY HILL ROAD, 58.7 FEET NORTHWEST
 JV6749'OF CEL AND P COMPANY POWER POLE NUMBER 756, AND 111.4 FEET EAST OF C
 JV6749'AND P OF MARYLAND POWER POLE NUMBER 11 AND 1390.24 FEET FROM THE
 JV6749'STATION.
 JV6749
 JV6749                          STATION RECOVERY (1990)
 JV6749
 JV6749'RECOVERED 1990
 JV6749'RECOVERED IN GOOD CONDITION.
 JV6749
 JV6749                          STATION RECOVERY (2001)
 JV6749
 JV6749'RECOVERY NOTE BY US POWER SQUADRON 2001 (JB)
 JV6749'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4628 ***********************************************************************
 AB4628  DESIGNATION -  EMORY AZ MK
 AB4628  PID         -  AB4628
 AB4628  STATE/COUNTY-  MD/CARROLL
 AB4628  COUNTRY     -  US
 AB4628  USGS QUAD   -  HAMPSTEAD (2016)
 AB4628
 AB4628                         *CURRENT SURVEY CONTROL
 AB4628  ______________________________________________________________________
 AB4628* NAD 83(2011) POSITION- 39 31 38.81928(N) 076 51 35.67044(W)   ADJUSTED
 AB4628* NAD 83(2011) ELLIP HT-   162.838 (meters)        (06/27/12)   ADJUSTED
 AB4628* NAD 83(2011) EPOCH   -  2010.00
 AB4628* NAVD 88 ORTHO HEIGHT -   194.9   (meters)      639.    (feet) GPS OBS
 AB4628  ______________________________________________________________________
 AB4628  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4628  GEOID HEIGHT    -        -32.101 (meters)                     GEOID99
 AB4628  GEOID HEIGHT    -        -32.089 (meters)                     GEOID18
 AB4628  NAD 83(2011) X  -  1,119,930.439 (meters)                     COMP
 AB4628  NAD 83(2011) Y  - -4,797,405.333 (meters)                     COMP
 AB4628  NAD 83(2011) Z  -  4,037,758.313 (meters)                     COMP
 AB4628  LAPLACE CORR    -         -0.33  (seconds)                    DEFLEC18
 AB4628
 AB4628  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4628  Standards:
 AB4628         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4628            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4628  -------------------------------------------------------------------
 AB4628  NETWORK    1.63   7.84           0.67   0.66   4.00      0.05454571
 AB4628  -------------------------------------------------------------------
 AB4628  Click here for local accuracies and other accuracy information.
 AB4628
 AB4628.The horizontal coordinates were established by GPS observations
 AB4628.and adjusted by the National Geodetic Survey in June 2012.
 AB4628
 AB4628.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4628.been affixed to the stable North American tectonic plate. See 
 AB4628.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4628
 AB4628.The horizontal coordinates are valid at the epoch date displayed above
 AB4628.which is a decimal equivalence of Year/Month/Day.
 AB4628
 AB4628.The orthometric height was determined by GPS observations and a
 AB4628.high-resolution geoid model.
 AB4628
 AB4628.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4628.GEOID18 height accuracy estimate available here.
 AB4628
 AB4628.Click photographs - Photos may exist for this station.
 AB4628
 AB4628.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4628
 AB4628.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4628
 AB4628.The ellipsoidal height was determined by GPS observations
 AB4628.and is referenced to NAD 83.
 AB4628
 AB4628. The following values were computed from the NAD 83(2011) position.
 AB4628
 AB4628;                    North         East     Units Scale Factor Converg.
 AB4628;SPC MD       -   206,571.811   412,045.181   MT  1.00001447   +0 05 16.5
 AB4628;SPC MD       -   677,727.68  1,351,851.56   sFT  1.00001447   +0 05 16.5
 AB4628;UTM  18      - 4,376,962.545   340,144.432   MT  0.99991462   -1 11 02.3
 AB4628
 AB4628!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4628!SPC MD       -   0.99997445  x   1.00001447  =   0.99998892
 AB4628!UTM  18      -   0.99997445  x   0.99991462  =   0.99988908
 AB4628
 AB4628:                Primary Azimuth Mark                     Grid Az
 AB4628:SPC MD       -  MARSHALL                                 035 20 02.4
 AB4628:UTM  18      -  MARSHALL                                 036 36 21.2
 AB4628
 AB4628_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4014476962(NAD 83)
 AB4628
 AB4628|---------------------------------------------------------------------|
 AB4628| PID    Reference Object                     Distance      Geod. Az  |
 AB4628|                                                           dddmmss.s |
 AB4628| AB4659 MARSHALL                            469.357 METERS 0352518.9 |
 AB4628|---------------------------------------------------------------------|
 AB4628
 AB4628                          SUPERSEDED SURVEY CONTROL
 AB4628
 AB4628  NAD 83(2007)-  39 31 38.81952(N)    076 51 35.67120(W) AD(2002.00) 0
 AB4628  ELLIP H (02/10/07)  162.861  (m)                       GP(2002.00)    
 AB4628  ELLIP H (08/30/02)  162.849  (m)                       GP(       ) 4 2
 AB4628  NAD 83(1991)-  39 31 38.81915(N)    076 51 35.67164(W) AD(       ) 1
 AB4628  ELLIP H (07/03/96)  162.775  (m)                       GP(       ) 1 1
 AB4628  NAVD 88 (07/03/96)  194.9    (m)  GEOID93  model used  GPS OBS        
 AB4628
 AB4628.Superseded values are not recommended for survey control.
 AB4628
 AB4628.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4628.See file dsdata.pdf to determine how the superseded data were derived.
 AB4628
 AB4628_MARKER: DD = SURVEY DISK
 AB4628_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4628_STAMPING: EMORY AZI 1995
 AB4628_MARK LOGO: MD-013
 AB4628_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4628_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4628+STABILITY: SURFACE MOTION
 AB4628_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4628+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4628
 AB4628  HISTORY     - Date     Condition        Report By
 AB4628  HISTORY     - 1995     MONUMENTED       MD-013
 AB4628
 AB4628                          STATION DESCRIPTION
 AB4628
 AB4628'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4628'STATION IS LOCATED ABOUT 8 MI (12.9 KM) SOUTHEAST OF WESTMINSTER AND
 AB4628'ABOUT 3 MI (4.8 KM) NORTHEAST OF FINKSBURG. TO REACH STATION FROM THE
 AB4628'INTERSECTION OF MD ROUTE 140 (BALTIMORE BLVD) AND MD ROUTE 91 (EMORY
 AB4628'ROAD) GO NORTH ON MD ROUTE 91 FOR 3 MI (4.8 KM) TO THE STATION ON THE
 AB4628'LEFT ON THE NORTHEAST SIDE OF A DRIVEWAY LEADING TO HOUSE NO.1710.
 AB4628'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AB4628'SET FLUSH WITH THE GROUND. IT IS ABOUT 1000 FT (304.8 M) SOUTHWEST OF
 AB4628'THE INTERSECTION OF MD ROUTE 91 AND EMORY CHURCH ROAD, 292 FT (89.0 M)
 AB4628'NORTHWEST OF THE CENTERLINE OF MD ROUTE 91, 52.6 FT (16.0 M) NORTHEAST
 AB4628'OF THE NORTHERNMOST CORNER OF HOUSE NO.1710 AND 1.9 FT (0.6 M)
 AB4628'NORTHWEST OF POWER POLE NO. 326283.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1932 ***********************************************************************
 HU1932  DESIGNATION -  END
 HU1932  PID         -  HU1932
 HU1932  STATE/COUNTY-  MD/WICOMICO
 HU1932  COUNTRY     -  US
 HU1932  USGS QUAD   -  WETIPQUIN (2016)
 HU1932
 HU1932                         *CURRENT SURVEY CONTROL
 HU1932  ______________________________________________________________________
 HU1932* NAD 83(1991) POSITION- 38 15 23.15917(N) 075 48 29.91213(W)   ADJUSTED
 HU1932* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1932  ______________________________________________________________________
 HU1932  GEOID HEIGHT    -        -35.842 (meters)                     GEOID18
 HU1932  LAPLACE CORR    -         -1.44  (seconds)                    DEFLEC18
 HU1932  HORZ ORDER      -  THIRD
 HU1932
 HU1932.The horizontal coordinates were established by classical geodetic methods
 HU1932.and adjusted by the National Geodetic Survey in January 1992.
 HU1932
 HU1932.The orthometric height was scaled from a topographic map.
 HU1932
 HU1932.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1932.GEOID18 height accuracy estimate available here.
 HU1932
 HU1932.Click photographs - Photos may exist for this station.
 HU1932
 HU1932.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1932
 HU1932. The following values were computed from the NAD 83(1991) position.
 HU1932
 HU1932;                    North         East     Units Scale Factor Converg.
 HU1932;SPC MD       -    66,147.626   504,301.493   MT  1.00000787   +0 44 52.6
 HU1932;SPC MD       -   217,019.34  1,654,529.15   sFT  1.00000787   +0 44 52.6
 HU1932;UTM  18      - 4,234,576.317   429,279.915   MT  0.99966159   -0 30 01.8
 HU1932
 HU1932!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1932!SPC MD       -   1.00000566  x   1.00000787  =   1.00001353
 HU1932!UTM  18      -   1.00000566  x   0.99966159  =   0.99966725
 HU1932
 HU1932:                Primary Azimuth Mark                     Grid Az
 HU1932:SPC MD       -  JONES                                    239 47 38.0
 HU1932:UTM  18      -  JONES                                    241 02 32.4
 HU1932
 HU1932_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2927934576(NAD 83)
 HU1932
 HU1932|---------------------------------------------------------------------|
 HU1932| PID    Reference Object                     Distance      Geod. Az  |
 HU1932|                                                           dddmmss.s |
 HU1932| HU1929 WHITEHAVEN CHURCH                   APPROX. 2.2 KM 0423605.2 |
 HU1932| HU1939 WALNUT                              472.200 METERS 1551423.2 |
 HU1932| HU1933 JONES                               APPROX. 1.1 KM 2403230.6 |
 HU1932|---------------------------------------------------------------------|
 HU1932
 HU1932                          SUPERSEDED SURVEY CONTROL
 HU1932
 HU1932  NAD 83(1986)-  38 15 23.15722(N)    075 48 29.93497(W) AD(       ) 3
 HU1932  NAD 27      -  38 15 22.71800(N)    075 48 31.19300(W) AD(       ) 3
 HU1932  USSD        -  38 15 23.09500(N)    075 48 30.88500(W) AD(       ) 3
 HU1932
 HU1932.Superseded values are not recommended for survey control.
 HU1932
 HU1932.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1932.See file dsdata.pdf to determine how the superseded data were derived.
 HU1932
 HU1932_MARKER: H = DRILL HOLE
 HU1932_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1932_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1932+STABILITY: SURFACE MOTION
 HU1932
 HU1932  HISTORY     - Date     Condition        Report By
 HU1932  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1932  HISTORY     - 1932     MARK NOT FOUND   CGS
 HU1932
 HU1932                          STATION DESCRIPTION
 HU1932
 HU1932'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1932'STATION IS THE N SHORE OF WICOMICO RIVER, OPPOSITE MOUNT VERNON
 HU1932'WHARF, ON MARSH LAND, ABOUT 3 FEET ABOVE AND 100 YARDS N OF
 HU1932'HIGH-WATER MARK IN RIVER AND ABOUT 75 YARDS TO THE NW OF A LARGE
 HU1932'CREEK WHICH EXTENDS ABOUT 2 MILES INLAND.  WATER BUSHES SKIRT
 HU1932'SHORE AROUND THE STATION.  STATION IS MARKED BY A HOLE IN THE
 HU1932'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HU1932'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH
 HU1932'TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HU1932'ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES AND BEARINGS TO
 HU1932'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--STACK OF DASHIELLS
 HU1932'CANNING HOUSE, 3/8 MILE, S 05 DEG 25 MIN W.  MIDDLE ATTIC WINDOW OF
 HU1932'WHITE HOUSE, 1/2 MILE, S 29 DEG 27 MIN W.  CHIMNEY ON OUTSIDE OF
 HU1932'YELLOW HOUSE, 1/2 MILE, S 52 DEG 45 MIN W.  CHIMNEY ON WHITE
 HU1932'HOUSE, 1 MILE, S 67 DEG 57 MIN W.  TANGENT OF LAND, 1 MILE, S 73 DEG
 HU1932'01 MIN W.  NEAR CHIMNEY OF CREAM-COLORED HOUSE, 1/2 MILE, N 48 DEG
 HU1932'02 MIN W.  CUPOLA ON RED BARN, 3/4 MILE, N 35 DEG 54 MIN E.  OLD
 HU1932'STYLE WINDMILL, 3/4 MILE, N 43 DEG 59 MIN E.  CHIMNEY OF
 HU1932'WHITEHAVEN HOTEL, 1-1/4 MILES, N 51 DEG 42 MIN E.  WEBSTERS CANNING
 HU1932'HOUSE, 1/2 MILE, S 46 DEG 59 MIN E.  RIGHT-HAND CHIMNEY ON GRAY HOUSE,
 HU1932'1/2 MILE S 25 DEG 45 MIN E.  LEFT SIDE OF MOUNT VERNON WHARF, 1/4
 HU1932'MILE, S 05 DEG 14 MIN E.
 HU1932
 HU1932                          STATION RECOVERY (1932)
 HU1932
 HU1932'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1932'THIS STATION IS LOST.  TWO PARTIES OF FOUR MEN EACH MADE THOROUGH
 HU1932'SEARCH FOR IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6197 ***********************************************************************
 HV6197  DESIGNATION -  END
 HV6197  PID         -  HV6197
 HV6197  STATE/COUNTY-  MD/QUEEN ANNES
 HV6197  COUNTRY     -  US
 HV6197  USGS QUAD   -  KENT ISLAND (2016)
 HV6197
 HV6197                         *CURRENT SURVEY CONTROL
 HV6197  ______________________________________________________________________
 HV6197* NAD 83(1991) POSITION- 38 59 37.93306(N) 076 17 08.35277(W)   ADJUSTED
 HV6197  ______________________________________________________________________
 HV6197  GEOID HEIGHT    -        -33.597 (meters)                     GEOID18
 HV6197  LAPLACE CORR    -         -2.70  (seconds)                    DEFLEC18
 HV6197  HORZ ORDER      -  THIRD
 HV6197
 HV6197.The horizontal coordinates were established by classical geodetic methods
 HV6197.and adjusted by the National Geodetic Survey in January 1992.
 HV6197
 HV6197.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6197.GEOID18 height accuracy estimate available here.
 HV6197
 HV6197.Click photographs - Photos may exist for this station.
 HV6197
 HV6197.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6197
 HV6197. The following values were computed from the NAD 83(1991) position.
 HV6197
 HV6197;                    North         East     Units Scale Factor Converg.
 HV6197;SPC MD       -   147,567.872   461,882.999   MT  0.99995196   +0 26 54.1
 HV6197;SPC MD       -   484,145.59  1,515,361.14   sFT  0.99995196   +0 26 54.1
 HV6197;UTM  18      - 4,316,882.453   388,661.433   MT  0.99975264   -0 48 32.6
 HV6197
 HV6197_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8866116882(NAD 83)
 HV6197
 HV6197                          SUPERSEDED SURVEY CONTROL
 HV6197
 HV6197  NAD 83(1986)-  38 59 37.92853(N)    076 17 08.36449(W) AD(       ) 3
 HV6197  NAD 27      -  38 59 37.52400(N)    076 17 09.52400(W) AD(       ) 3
 HV6197
 HV6197.Superseded values are not recommended for survey control.
 HV6197
 HV6197.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6197.See file dsdata.pdf to determine how the superseded data were derived.
 HV6197
 HV6197_MARKER: W = UNMONUMENTED
 HV6197_SETTING: 0 = UNSPECIFIED SETTING
 HV6197
 HV6197  HISTORY     - Date     Condition        Report By
 HV6197  HISTORY     - 1932     MONUMENTED       CGS
 HV6197
 HV6197                          STATION DESCRIPTION
 HV6197
 HV6197'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (JAB)
 HV6197'STATION IS A LARGE BANNER USED FOR TOPOGRAPHIC CONTROL OF THE NE
 HV6197'SIDE OF KENT ISLAND.  STATION IS UNMARKED AND NOT RECOVERABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6275 ***********************************************************************
 HV6275  DESIGNATION -  END
 HV6275  PID         -  HV6275
 HV6275  STATE/COUNTY-  MD/TALBOT
 HV6275  COUNTRY     -  US
 HV6275  USGS QUAD   -  CLAIBORNE (2016)
 HV6275
 HV6275                         *CURRENT SURVEY CONTROL
 HV6275  ______________________________________________________________________
 HV6275* NAD 83(1991) POSITION- 38 47 36.67982(N) 076 16 30.23842(W)   ADJUSTED
 HV6275* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6275  ______________________________________________________________________
 HV6275  GEOID HEIGHT    -        -34.180 (meters)                     GEOID18
 HV6275  LAPLACE CORR    -         -5.18  (seconds)                    DEFLEC18
 HV6275  HORZ ORDER      -  THIRD
 HV6275
 HV6275.The horizontal coordinates were established by classical geodetic methods
 HV6275.and adjusted by the National Geodetic Survey in January 1992.
 HV6275
 HV6275.The orthometric height was scaled from a topographic map.
 HV6275
 HV6275.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6275.GEOID18 height accuracy estimate available here.
 HV6275
 HV6275.Click photographs - Photos may exist for this station.
 HV6275
 HV6275.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6275
 HV6275. The following values were computed from the NAD 83(1991) position.
 HV6275
 HV6275;                    North         East     Units Scale Factor Converg.
 HV6275;SPC MD       -   125,335.569   462,976.758   MT  0.99995087   +0 27 18.0
 HV6275;SPC MD       -   411,205.11  1,518,949.58   sFT  0.99995087   +0 27 18.0
 HV6275;UTM  18      - 4,294,635.940   389,267.617   MT  0.99975099   -0 47 56.1
 HV6275
 HV6275!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6275!SPC MD       -   1.00000524  x   0.99995087  =   0.99995611
 HV6275!UTM  18      -   1.00000524  x   0.99975099  =   0.99975623
 HV6275
 HV6275_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8926794635(NAD 83)
 HV6275
 HV6275                          SUPERSEDED SURVEY CONTROL
 HV6275
 HV6275  NAD 83(1986)-  38 47 36.67578(N)    076 16 30.25248(W) AD(       ) 3
 HV6275  NAD 27      -  38 47 36.22200(N)    076 16 31.47200(W) AD(       ) 3
 HV6275  USSD        -  38 47 36.61400(N)    076 16 31.26900(W) AD(       ) 3
 HV6275
 HV6275.Superseded values are not recommended for survey control.
 HV6275
 HV6275.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6275.See file dsdata.pdf to determine how the superseded data were derived.
 HV6275
 HV6275_MARKER: K = CLAY TILE PIPE
 HV6275_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6275_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6275_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6275
 HV6275  HISTORY     - Date     Condition        Report By
 HV6275  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6275  HISTORY     - 1934     MARK NOT FOUND   CGS
 HV6275  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6275
 HV6275                          STATION DESCRIPTION
 HV6275
 HV6275'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6275'ON THE WESTERN SHORE OF HARRIS CREEK, ON THE SOUTHWESTERN SIDE
 HV6275'OF ENTRANCE TO NORTHWEST BRANCH, IN A CULTIVATED FIELD, ABOUT 5
 HV6275'FEET ABOVE HIGH WATER, AND 4 YARDS W OF SHORE.  STATION MARK IS
 HV6275'CENTER OF 2-INCH TILE PIPE PROJECTING 5 INCHES ABOVE SURFACE OF
 HV6275'GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 HV6275'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6275'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6275'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6275'TOP OF THE POST.  IT IS 14.76 METERS (48.4 FEET) FROM STATION
 HV6275'S 83 DEG 57 MIN W.  OTHER DISTANCES AND BEARINGS ARE AS
 HV6275'FOLLOWS--S GABLE OF BARN, 200 YARDS, N 51 DEG 00 MIN W.  S
 HV6275'CHIMNEY OF KERBYS HOUSE, 200 YARDS, N 41 DEG 03 MIN W.  S CHIMNEY
 HV6275'OF HOUSE, 1/2 MILE, N 0 DEG 31 MIN W.  W GABLE OF TIN-ROOF BARN,
 HV6275'3/8 MILE, N 2 DEG 09 MIN E.  S CHIMNEY OF HARRISONS HOUSE, 3/4
 HV6275'MILE, N 85 DEG 29 MIN E.  W GABLE OF BARN, 7/8 MILE, S 68 DEG 11
 HV6275'MIN E.  N CHIMNEY OF MILLERS HOUSE, 1-1/4 MILES, S 34 DEG 14
 HV6275'MIN E.
 HV6275
 HV6275                          STATION RECOVERY (1934)
 HV6275
 HV6275'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 HV6275'STATION BELIEVED WASHED AWAY.  MEASUREMENT TAKEN IN DIRECTION
 HV6275'INDICATED WOULD BRING STATION OVER BANK.  OWNER SAYS CONSIDERABLE
 HV6275'AMOUNT OF BANK WASHED AWAY AT THIS POINT.  REFERENCE MARKER
 HV6275'SEARCHED FOR, BUT COULD NOT BE FOUND.  IT IS RECOMMENDED THAT THIS
 HV6275'STATION BE LISTED AS LOST.
 HV6275
 HV6275                          STATION RECOVERY (1940)
 HV6275
 HV6275'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6275'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  OWNER INTERVIEWED
 HV6275'SAYS THAT MONUMENT WAS WASHED OUT.  ANGLES TAKEN TO REFERENCE
 HV6275'OBJECTS WITH SEXTANT VERIFIES THE OWNERS STATEMENT.
 HV6275'
 HV6275'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5583 ***********************************************************************
 JV5583  DESIGNATION -  END
 JV5583  PID         -  JV5583
 JV5583  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5583  COUNTRY     -  US
 JV5583  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5583
 JV5583                         *CURRENT SURVEY CONTROL
 JV5583  ______________________________________________________________________
 JV5583* NAD 83(1991) POSITION- 39 15 54.20801(N) 076 37 13.37080(W)   ADJUSTED
 JV5583* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5583  ______________________________________________________________________
 JV5583  GEOID HEIGHT    -        -32.746 (meters)                     GEOID18
 JV5583  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 JV5583  HORZ ORDER      -  THIRD
 JV5583
 JV5583.The horizontal coordinates were established by classical geodetic methods
 JV5583.and adjusted by the National Geodetic Survey in January 1992.
 JV5583
 JV5583.The orthometric height was scaled from a topographic map.
 JV5583
 JV5583.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5583.GEOID18 height accuracy estimate available here.
 JV5583
 JV5583.Click photographs - Photos may exist for this station.
 JV5583
 JV5583.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5583
 JV5583. The following values were computed from the NAD 83(1991) position.
 JV5583
 JV5583;                    North         East     Units Scale Factor Converg.
 JV5583;SPC MD       -   177,499.359   432,761.019   MT  0.99997288   +0 14 17.7
 JV5583;SPC MD       -   582,345.81  1,419,816.78   sFT  0.99997288   +0 14 17.7
 JV5583;UTM  18      - 4,347,442.259   360,209.644   MT  0.99984061   -1 01 32.6
 JV5583
 JV5583!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5583!SPC MD       -   1.00000470  x   0.99997288  =   0.99997758
 JV5583!UTM  18      -   1.00000470  x   0.99984061  =   0.99984531
 JV5583
 JV5583:                Primary Azimuth Mark                     Grid Az
 JV5583:SPC MD       -  DUGAN                                    170 27 27.7
 JV5583:UTM  18      -  DUGAN                                    171 43 18.0
 JV5583
 JV5583_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6020947442(NAD 83)
 JV5583
 JV5583|---------------------------------------------------------------------|
 JV5583| PID    Reference Object                     Distance      Geod. Az  |
 JV5583|                                                           dddmmss.s |
 JV5583| JV5585 GAS USE 1915                         53.520 METERS 10319     |
 JV5583| JV5587 DUGAN                               APPROX. 1.1 KM 1704145.4 |
 JV5583| CA9389 END RM                               17.288 METERS 26713     |
 JV5583| JV5628 RAIL                                427.618 METERS 2694808.2 |
 JV5583| JV5577 NIRA                                APPROX. 0.6 KM 3474456.8 |
 JV5583|---------------------------------------------------------------------|
 JV5583
 JV5583                          SUPERSEDED SURVEY CONTROL
 JV5583
 JV5583  NAD 83(1986)-  39 15 54.20451(N)    076 37 13.37972(W) AD(       ) 3
 JV5583  NAD 27      -  39 15 53.82100(N)    076 37 14.49200(W) AD(       ) 3
 JV5583
 JV5583.Superseded values are not recommended for survey control.
 JV5583
 JV5583.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5583.See file dsdata.pdf to determine how the superseded data were derived.
 JV5583
 JV5583_MARKER: DS = TRIANGULATION STATION DISK
 JV5583_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5583_STAMPING: END 1934
 JV5583_MARK LOGO: CGS
 JV5583_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5583+STABILITY: SURFACE MOTION
 JV5583
 JV5583  HISTORY     - Date     Condition        Report By
 JV5583  HISTORY     - 1934     MONUMENTED       CGS
 JV5583  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV5583
 JV5583                          STATION DESCRIPTION
 JV5583
 JV5583'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5583'STATION IS ON THE EASTERN SHORE OF THE MIDDLE BRANCH OF THE
 JV5583'PATAPSCO RIVER, ON THE N SIDE OF THE WESTERN MARYLAND RAILROAD
 JV5583'ON THE TOP EDGE OF THE RAILROAD FILL, 57 FEET FROM E END OF
 JV5583'BRIDGE, 9 FEET N OF NORTHERNMOST RAIL.
 JV5583'
 JV5583'STATION MARK IS A STANDARD BRONZE DISK SET IN CONCRETE.
 JV5583'
 JV5583'REFERENCE MARK IS A STANDARD DISK SET IN THE CONCRETE BASE OF
 JV5583'SEMAPHORE SIGNAL AT E END OF BRIDGE.
 JV5583'
 JV5583'HEIGHT OF LIGHT ABOVE STATION MARK 3 METERS.
 JV5583
 JV5583                          STATION RECOVERY (1975)
 JV5583
 JV5583'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV5583'A SEARCH WAS MADE AND NO EVIDENCE OF THE STATION WAS FOUND.  IT
 JV5583'IS BELIEVED THE STATION WAS DESTROYED DURING CONSTRUCTION ON THE
 JV5583'HANOVER STREET BRIDGE WHICH THE STATION WAS LOCATED ON.
 JV5583'
 JV5583'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5583'IN SOUTH PART OF BALTIMORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3551 ***********************************************************************
 JU3551  DESIGNATION -  END 1898
 JU3551  PID         -  JU3551
 JU3551  STATE/COUNTY-  MD/CECIL
 JU3551  COUNTRY     -  US
 JU3551  USGS QUAD   -  GALENA (2017)
 JU3551
 JU3551                         *CURRENT SURVEY CONTROL
 JU3551  ______________________________________________________________________
 JU3551* NAD 83(1991) POSITION- 39 22 14.57746(N) 075 58 43.25966(W)   ADJUSTED
 JU3551* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3551  ______________________________________________________________________
 JU3551  GEOID HEIGHT    -        -33.409 (meters)                     GEOID18
 JU3551  LAPLACE CORR    -         -1.84  (seconds)                    DEFLEC18
 JU3551  HORZ ORDER      -  THIRD
 JU3551
 JU3551.The horizontal coordinates were established by classical geodetic methods
 JU3551.and adjusted by the National Geodetic Survey in January 1992.
 JU3551
 JU3551.The orthometric height was scaled from a topographic map.
 JU3551
 JU3551.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3551.GEOID18 height accuracy estimate available here.
 JU3551
 JU3551.Click photographs - Photos may exist for this station.
 JU3551
 JU3551.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3551
 JU3551. The following values were computed from the NAD 83(1991) position.
 JU3551
 JU3551;                    North         East     Units Scale Factor Converg.
 JU3551;SPC MD       -   189,653.642   488,006.497   MT  0.99998709   +0 38 27.6
 JU3551;SPC MD       -   622,221.99  1,601,067.98   sFT  0.99998709   +0 38 27.6
 JU3551;UTM  18      - 4,358,373.388   415,697.294   MT  0.99968750   -0 37 15.1
 JU3551
 JU3551!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3551!SPC MD       -   1.00000528  x   0.99998709  =   0.99999237
 JU3551!UTM  18      -   1.00000528  x   0.99968750  =   0.99969278
 JU3551
 JU3551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1569758373(NAD 83)
 JU3551
 JU3551                          SUPERSEDED SURVEY CONTROL
 JU3551
 JU3551  NAD 83(1986)-  39 22 14.56961(N)    075 58 43.26671(W) AD(       ) 3
 JU3551  NAD 27      -  39 22 14.18000(N)    075 58 44.47800(W) AD(       ) 3
 JU3551  USSD        -  39 22 14.57000(N)    075 58 44.35000(W) AD(       ) 3
 JU3551
 JU3551.Superseded values are not recommended for survey control.
 JU3551
 JU3551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3551.See file dsdata.pdf to determine how the superseded data were derived.
 JU3551
 JU3551_MARKER: 61 = POLE
 JU3551
 JU3551  HISTORY     - Date     Condition        Report By
 JU3551  HISTORY     - 1898     FIRST OBSERVED   CGS
 JU3551
 JU3551                          STATION DESCRIPTION
 JU3551
 JU3551'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (HLM)
 JU3551'ON N SIDE OF SASSAFRAS RIVER, AT END OF ORDINARY POINT.  MARKED
 JU3551'BY SIGNAL POLE SET IN BOX 3 BY 3 INCHES BY 3 FEET DEEP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4263 ***********************************************************************
 JU4263  DESIGNATION -  ENDO
 JU4263  PID         -  JU4263
 JU4263  STATE/COUNTY-  MD/CECIL
 JU4263  COUNTRY     -  US
 JU4263  USGS QUAD   -  NEWARK WEST (2016)
 JU4263
 JU4263                         *CURRENT SURVEY CONTROL
 JU4263  ______________________________________________________________________
 JU4263* NAD 83(2011) POSITION- 39 38 20.72349(N) 075 47 35.53020(W)   ADJUSTED
 JU4263* NAD 83(2011) ELLIP HT-    10.882 (meters)        (06/27/12)   ADJUSTED
 JU4263* NAD 83(2011) EPOCH   -  2010.00
 JU4263* NAVD 88 ORTHO HEIGHT -    43.942 (meters)      144.17  (feet) ADJUSTED
 JU4263  ______________________________________________________________________
 JU4263  GEOID HEIGHT    -        -33.066 (meters)                     GEOID18
 JU4263  NAD 83(2011) X  -  1,207,079.872 (meters)                     COMP
 JU4263  NAD 83(2011) Y  - -4,767,954.634 (meters)                     COMP
 JU4263  NAD 83(2011) Z  -  4,047,214.450 (meters)                     COMP
 JU4263  LAPLACE CORR    -          1.70  (seconds)                    DEFLEC18
 JU4263  DYNAMIC HEIGHT  -         43.921 (meters)      144.10  (feet) COMP
 JU4263  MODELED GRAVITY -    980,150.5   (mgal)                       NAVD 88
 JU4263
 JU4263  VERT ORDER      -  SECOND    CLASS I
 JU4263
 JU4263  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4263  Standards:
 JU4263         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4263            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4263  -------------------------------------------------------------------
 JU4263  NETWORK    2.11   4.17           0.85   0.85   2.13      0.31831188
 JU4263  -------------------------------------------------------------------
 JU4263  Click here for local accuracies and other accuracy information.
 JU4263
 JU4263.The horizontal coordinates were established by GPS observations
 JU4263.and adjusted by the National Geodetic Survey in June 2012.
 JU4263
 JU4263.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4263.been affixed to the stable North American tectonic plate. See 
 JU4263.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4263
 JU4263.The horizontal coordinates are valid at the epoch date displayed above
 JU4263.which is a decimal equivalence of Year/Month/Day.
 JU4263
 JU4263.The orthometric height was determined by differential leveling and
 JU4263.adjusted by the NATIONAL GEODETIC SURVEY
 JU4263.in June 1995.
 JU4263
 JU4263.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4263.GEOID18 height accuracy estimate available here.
 JU4263
 JU4263.Click photographs - Photos may exist for this station.
 JU4263
 JU4263.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4263
 JU4263.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4263
 JU4263.The ellipsoidal height was determined by GPS observations
 JU4263.and is referenced to NAD 83.
 JU4263
 JU4263.The dynamic height is computed by dividing the NAVD 88
 JU4263.geopotential number by the normal gravity value computed on the
 JU4263.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4263.degrees latitude (g = 980.6199 gals.).
 JU4263
 JU4263.The modeled gravity was interpolated from observed gravity values.
 JU4263
 JU4263. The following values were computed from the NAD 83(2011) position.
 JU4263
 JU4263;                    North         East     Units Scale Factor Converg.
 JU4263;SPC MD       -   219,642.662   503,594.530   MT  1.00003855   +0 45 26.7
 JU4263;SPC MD       -   720,610.97  1,652,209.72   sFT  1.00003855   +0 45 26.7
 JU4263;UTM  18      - 4,388,001.543   431,936.925   MT  0.99965703   -0 30 21.8
 JU4263
 JU4263!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4263!SPC MD       -   0.99999829  x   1.00003855  =   1.00003684
 JU4263!UTM  18      -   0.99999829  x   0.99965703  =   0.99965532
 JU4263
 JU4263_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3193688001(NAD 83)
 JU4263
 JU4263                          SUPERSEDED SURVEY CONTROL
 JU4263
 JU4263  NAD 83(2007)-  39 38 20.72386(N)    075 47 35.53105(W) AD(2002.00) 0
 JU4263  ELLIP H (02/10/07)   10.902  (m)                       GP(2002.00)    
 JU4263  ELLIP H (08/30/02)   10.910  (m)                       GP(       ) 4 2
 JU4263  NAD 83(1991)-  39 38 20.72387(N)    075 47 35.53133(W) AD(       ) 1
 JU4263  ELLIP H (09/15/92)   10.924  (m)                       GP(       ) 4 1
 JU4263  NGVD 29 (09/15/92)   44.2    (m)  GEOID90  model used  GPS OBS        
 JU4263
 JU4263.Superseded values are not recommended for survey control.
 JU4263
 JU4263.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4263.See file dsdata.pdf to determine how the superseded data were derived.
 JU4263
 JU4263_MARKER: DD = SURVEY DISK
 JU4263_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4263_STAMPING: ENDO 1991
 JU4263_MARK LOGO: MDSHA
 JU4263_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4263_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4263+STABILITY: SURFACE MOTION
 JU4263_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4263+SATELLITE: SATELLITE OBSERVATIONS - 1991
 JU4263
 JU4263  HISTORY     - Date     Condition        Report By
 JU4263  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4263  HISTORY     - 20130206 GOOD             INDIV
 JU4263
 JU4263                          STATION DESCRIPTION
 JU4263
 JU4263'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4263'THE MARKER IS LOCATED ABOUT 49.8 MI (80.1 KM) NORTHEAST OF BALTIMORE,
 JU4263'2.8 MI (4.5 KM) NORTHEAST OF ELKTON AND ALONG THE NORTHBOUND LANE OF
 JU4263'INTERSTATE HIGHWAY 95.  THE MARKER IS ON ROAD RIGHT-OF-WAY.  TO REACH
 JU4263'THE MARKER FROM A POINT WHERE STATE HIGHWAY 279 PASSES UNDER
 JU4263'INTERSTATE HIGHWAY 95, GO NORTH ON INTERSTATE HIGHWAY 95 FOR 0.5 MI
 JU4263'(0.8 KM) TO THE MARKER ON THE RIGHT.  THE POINT IS MARKED WITH A
 JU4263'MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE TOP OF A
 JU4263'0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 JU4263'GROUND.  IT IS 42.5 FT (13.0 M) SOUTH OF THE SOUTH EDGE OF THE MOST
 JU4263'SOUTH PAVED SHOULDER OF THE NORTHBOUND LANE ALONG INTERSTATE HIGHWAY
 JU4263'95, 35.5 FT (10.8 M) NORTH OF A 4-FOOT HIGH FENCE AND 98.0 FT (29.9
 JU4263'M) WEST OF A 10 IN.  MAPLE TREE.
 JU4263
 JU4263                          STATION RECOVERY (2013)
 JU4263
 JU4263'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (DRD)
 JU4263'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3322 ***********************************************************************
 JV3322  DESIGNATION -  ENDS
 JV3322  PID         -  JV3322
 JV3322  STATE/COUNTY-  MD/WASHINGTON
 JV3322  COUNTRY     -  US
 JV3322  USGS QUAD   -  HAGERSTOWN (2016)
 JV3322
 JV3322                         *CURRENT SURVEY CONTROL
 JV3322  ______________________________________________________________________
 JV3322* NAD 83(1991) POSITION- 39 43 08.25528(N) 077 44 05.08377(W)   ADJUSTED
 JV3322* NAVD 88 ORTHO HEIGHT -   197.675 (meters)      648.54  (feet) ADJUSTED
 JV3322  ______________________________________________________________________
 JV3322  GEOID HEIGHT    -        -34.277 (meters)                     GEOID18
 JV3322  LAPLACE CORR    -          2.88  (seconds)                    DEFLEC18
 JV3322  DYNAMIC HEIGHT  -        197.560 (meters)      648.16  (feet) COMP
 JV3322  MODELED GRAVITY -    980,037.9   (mgal)                       NAVD 88
 JV3322
 JV3322  HORZ ORDER      -  SECOND
 JV3322  VERT ORDER      -  FIRST     CLASS II
 JV3322
 JV3322.The horizontal coordinates were established by classical geodetic methods
 JV3322.and adjusted by the National Geodetic Survey in January 1992.
 JV3322
 JV3322.The orthometric height was determined by differential leveling and
 JV3322.adjusted by the NATIONAL GEODETIC SURVEY
 JV3322.in June 1991.
 JV3322
 JV3322.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3322.GEOID18 height accuracy estimate available here.
 JV3322
 JV3322.Click photographs - Photos may exist for this station.
 JV3322
 JV3322.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3322
 JV3322.The dynamic height is computed by dividing the NAVD 88
 JV3322.geopotential number by the normal gravity value computed on the
 JV3322.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3322.degrees latitude (g = 980.6199 gals.).
 JV3322
 JV3322.The modeled gravity was interpolated from observed gravity values.
 JV3322
 JV3322. The following values were computed from the NAD 83(1991) position.
 JV3322
 JV3322;                    North         East     Units Scale Factor Converg.
 JV3322;SPC MD       -   228,079.720   336,997.803   MT  1.00005813   -0 27 40.1
 JV3322;SPC MD       -   748,291.55  1,105,633.63   sFT  1.00005813   -0 27 40.1
 JV3322;SPC PA S     -    42,818.373   601,308.019   MT  1.00004043   +0 00 35.6
 JV3322;SPC PA S     -   140,479.95  1,972,791.39   sFT  1.00004043   +0 00 35.6
 JV3322;SPC WV N     -   136,812.852   751,339.544   MT  0.99994205   +1 07 33.0
 JV3322;SPC WV N     -   448,860.17  2,465,019.82   sFT  0.99994205   +1 07 33.0
 JV3322;UTM  18      - 4,400,141.562   265,592.266   MT  1.00027653   -1 44 54.1
 JV3322
 JV3322!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3322!SPC MD       -   0.99997437  x   1.00005813  =   1.00003249
 JV3322!SPC PA S     -   0.99997437  x   1.00004043  =   1.00001480
 JV3322!SPC WV N     -   0.99997437  x   0.99994205  =   0.99991642
 JV3322!UTM  18      -   0.99997437  x   1.00027653  =   1.00025089
 JV3322
 JV3322:                Primary Azimuth Mark                     Grid Az
 JV3322:SPC MD       -  ENDS AZ MK                               044 18 26.9
 JV3322:SPC PA S     -  ENDS AZ MK                               043 50 11.2
 JV3322:SPC WV N     -  ENDS AZ MK                               042 43 13.8
 JV3322:UTM  18      -  ENDS AZ MK                               045 35 40.9
 JV3322
 JV3322_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STK6559200141(NAD 83)
 JV3322
 JV3322|---------------------------------------------------------------------|
 JV3322| PID    Reference Object                     Distance      Geod. Az  |
 JV3322|                                                           dddmmss.s |
 JV3322| JV4671 FORT RITCHIE SITE A TANK            APPROX. 4.5 KM 0204210.5 |
 JV3322| CJ9748 ENDS AZ MK                                         0435046.8 |
 JV3322| JV4718 MIDDLETOWN TRINITY CH CHRIST        APPROX. 1.0 KM 0653426.4 |
 JV3322| JV3323 ENDS RM 1                            26.791 METERS 10614     |
 JV3322| JV3324 ENDS RM 2                            34.207 METERS 22332     |
 JV3322|---------------------------------------------------------------------|
 JV3322
 JV3322                          SUPERSEDED SURVEY CONTROL
 JV3322
 JV3322  NAD 83(1986)-  39 43 08.25379(N)    077 44 05.09508(W) AD(       ) 2
 JV3322  NAD 27      -  39 43 07.91500(N)    077 44 06.11690(W) AD(       ) 2
 JV3322  NGVD 29             197.87   (m)          649.2    (f) LEVELING    3  
 JV3322  NGVD 29 (11/26/84)  197.869  (m)          649.18   (f) ADJUSTED    1 2
 JV3322
 JV3322.Superseded values are not recommended for survey control.
 JV3322
 JV3322.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3322.See file dsdata.pdf to determine how the superseded data were derived.
 JV3322
 JV3322_MARKER: DS = TRIANGULATION STATION DISK
 JV3322_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3322_STAMPING: ENDS 1957
 JV3322_MARK LOGO: CGS
 JV3322_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3322_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3322+STABILITY: SURFACE MOTION
 JV3322_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3322+SATELLITE: SATELLITE OBSERVATIONS - May 08, 2008
 JV3322
 JV3322  HISTORY     - Date     Condition        Report By
 JV3322  HISTORY     - 1957     MONUMENTED       CGS
 JV3322  HISTORY     - 1958     GOOD             CGS
 JV3322  HISTORY     - 1960     GOOD             CGS
 JV3322  HISTORY     - 1961     GOOD             CGS
 JV3322  HISTORY     - 1979     GOOD             NGS
 JV3322  HISTORY     - 20011220 GOOD             MDSHA
 JV3322  HISTORY     - 20070120 GOOD             GEOCAC
 JV3322  HISTORY     - 20080508 GOOD             GEOCAC
 JV3322
 JV3322                          STATION DESCRIPTION
 JV3322
 JV3322'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV3322'STATION IS LOCATED ABOUT 5 MILES NORTH OF THE CENTER OF
 JV3322'HAGERSTOWN, 0.35 MILE WEST OF OLD U.S. HIGHWAY NO.11, 0.15 MILE
 JV3322'SOUTH OF THE PENNSYLVANIA-MARYLAND STATE LINE, AND 87-1/2 FEET
 JV3322'EAST OF NORTH BOUND TRAFFIC LANE OF U.S. HIGHWAY NO. 11.  AND 33
 JV3322'FEET WEST OF GRAVEL ROAD, 5 FEET SOUTH-EAST OF WHITE WITNESS
 JV3322'POST.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED ENDS 1957.
 JV3322'
 JV3322'REFERENCE MARK NO.1 IS 45 FEET EAST OF ROAD, AND 74 FEET SOUTH
 JV3322'OF ROCK FENCE.  THE MARK IS SET IN A DRILL HOLE IN ROCK, AND THE
 JV3322'DISK IS STAMPED ENDS NO 1 1957.
 JV3322'
 JV3322'REFERENCE MARK NO. 2 IS 90 FEET EAST OF CENTER-LINE OF EAST
 JV3322'LANE OF ROAD, 30 FEET WEST OF GRAVEL ROAD AND 41 FEET NORTH-WEST
 JV3322'OF A LONE TREE.  THE MARK IS SET IN A DRILL HOLE IN ROCK, AND
 JV3322'THE DISK IS STAMPED ENDS NO 2 1957.
 JV3322'
 JV3322'PENNSYLVANIA-MARYLAND STATE LINE BOUNDRY MARKER (AZIMUTH MARK) IS
 JV3322'22 FEET SOUTH OF SURFACED ROAD, 15-1/2 FEET WEST OF NARROW LANE,
 JV3322'AND 10 FEET EAST OF HIGHLINE POLE.  THE MARK PROJECTS 2 FEET AND
 JV3322'IS 10 INCHES SQUARE.  POINT INTERSECTED WAS A CROSS CUT ON TOP
 JV3322'OF STONE.
 JV3322'
 JV3322'TO REACH FROM THE JUNCTION OF U.S. HIGHWAYS NO. 11 AND NO. 40
 JV3322'IN HAGERSTOWN.  GO NORTH ON U.S. HIGHWAY NO.11 FOR 5.35 MILES TO
 JV3322'PENNSYLVANIA-MARYLAND STATE LINE.  TURN LEFT ON MACADAM ROAD AND
 JV3322'GO WEST FOR 0.35 MILE TO PENNSYLVANIA-MARYLAND STATE LINE
 JV3322'BOUNDARY MARKER (AZIMUTH MARK) ON LEFT.  CONTINUE WEST FOR 0.05
 JV3322'MILE.  TURN LEFT ON TRACK ROAD, AND GO 0.15 MILE TO STATION ON
 JV3322'RIGHT AS DESCRIBED.
 JV3322'
 JV3322'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV3322
 JV3322                          STATION RECOVERY (1958)
 JV3322
 JV3322'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV3322'5 MI N FROM HAGERSTOWN.
 JV3322'5.0 MILES NORTH ALONG U.S. HIGHWAY 11 FROM THE JUNCTION OF
 JV3322'U.S. HIGHWAY 40 AT HAGERSTOWN, THENCE WEST 0.35 MILE ALONG A
 JV3322'PAVED ROAD, THENCE 0.15 MILE SOUTH ALONG NEW HIGHWAY SITE, 86 1/2
 JV3322'FEET EAST OF THE CENTER LINE OF THE NORTH BOUND LANES OF THE
 JV3322'HIGHWAY, 4 FEET SOUTH OF A WITNESS POST AND SET IN THE TOP OF
 JV3322'A CONCRETE POST PROJECTING 0.4 FOOT ABOVE THE GROUND.
 JV3322
 JV3322                          STATION RECOVERY (1960)
 JV3322
 JV3322'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (JCC)
 JV3322'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED AS
 JV3322'DESCRIBED AND FOUND IN GOOD CONDITION.  THE DISTANCES AND DIRECTIONS
 JV3322'TO REFERENCE MARKS 1 AND 2 CHECKED WITH THE PREVIOUS DATA.  THE
 JV3322'PREVIOUS DESCRIPTION OF THE TO REACH THE STATION IS
 JV3322'ADEQUATE.  THE PENNSYLVANIA AND MARYLAND STATE LINE BOUNDRY
 JV3322'MARKER, WHICH WAS PREVIOUSLY USED AS AN AZIMUTH MARK WAS FOUND
 JV3322'BROKEN OFF AND LAYING ON ITS SIDE.  A NEW AZIMUTH MARK WAS
 JV3322'ESTABLISHED AT THIS DATE.
 JV3322'
 JV3322'TO REACH THE AZIMUTH MARK FROM THE STATION.  GO NORTH ON A
 JV3322'BLACKTOP FARM ROAD FOR 0.2 MILE, THENCE TURN RIGHT AND GO EAST
 JV3322'ON THE BLACKTOP ROAD FOR 0.15 MILE TO THE INTERSECTION OF
 JV3322'COUNTY HIGHWAY 28030.  TURN SHARP LEFT AND GO WEST ON COUNTY
 JV3322'HIGHWAY 28030 FOR 0.15 MILE TO THE EAST END OF A LARGE CONCRETE
 JV3322'BRIDGE AND THE AZIMUTH MARK ON THE LEFT, SOUTH, SIDE OF THE
 JV3322'HIGHWAY IN THE SOUTHEAST ABUTMENT OF THE CONCRETE BRIDGE.
 JV3322'
 JV3322'THE AZIMUTH MARK, A STANDARD DISK STAMPED ENDS 1960, IS CEMENTED
 JV3322'IN A DRILL HOLE IN SOUTHEAST CONCRETE ABUTMENT OF THE BRIDGE
 JV3322'WHICH PROJECTS ABOUT 3 FEET ABOVE THE SURFACE OF THE GROUND.  IT
 JV3322'IS 19.0 FEET SOUTH OF THE CENTER OF COUNTY HIGHWAY 28030 AND 1.5
 JV3322'FEET WEST OF THE EAST END OF THE CONCRETE ABUTMENT.
 JV3322'
 JV3322'HEIGHT OF LIGHT ABOVE STATION MARK 16.20 METERS.
 JV3322
 JV3322                          STATION RECOVERY (1961)
 JV3322
 JV3322'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961
 JV3322'RECOVERED IN GOOD CONDITION.
 JV3322
 JV3322                          STATION RECOVERY (1979)
 JV3322
 JV3322'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3322'RECOVERED IN GOOD CONDITION.
 JV3322
 JV3322                          STATION RECOVERY (2001)
 JV3322
 JV3322'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3322'RECOVERED AS DESCRIBED.
 JV3322
 JV3322                          STATION RECOVERY (2007)
 JV3322
 JV3322'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JV3322'STATION IS LOCATED 2 FEET WEST OF A 12-INCH TREE AND ABOUT 10 FEET
 JV3322'WEST OF THE RIGHT-OF-WAY FENCE.
 JV3322'
 JV3322'REFERENCE MARK 1 WAS NOT RECOVERED - APPEARS TO HAVE BEEN GRADED OUT.
 JV3322'
 JV3322'REFERENCE MARK 2 WAS RECOVERED IN GOOD CONDITION ABOUT 6 FEET WEST OF
 JV3322'THE RIGHT-OF-WAY FENCE.
 JV3322'
 JV3322'THE AZIMUTH MARK WAS NOT SEARCHED FOR.
 JV3322
 JV3322                          STATION RECOVERY (2008)
 JV3322
 JV3322'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3322'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3323 ***********************************************************************
 JV3323  DESIGNATION -  ENDS RM 1
 JV3323  PID         -  JV3323
 JV3323  STATE/COUNTY-  MD/WASHINGTON
 JV3323  COUNTRY     -  US
 JV3323  USGS QUAD   -  HAGERSTOWN (2016)
 JV3323
 JV3323                         *CURRENT SURVEY CONTROL
 JV3323  ______________________________________________________________________
 JV3323* NAD 83(1986) POSITION- 39 43 08.01   (N) 077 44 04.00   (W)   HD_HELD1
 JV3323* NAVD 88 ORTHO HEIGHT -   198.092 (meters)      649.91  (feet) ADJUSTED
 JV3323  ______________________________________________________________________
 JV3323  GEOID HEIGHT    -        -34.276 (meters)                     GEOID18
 JV3323  DYNAMIC HEIGHT  -        197.976 (meters)      649.53  (feet) COMP
 JV3323  MODELED GRAVITY -    980,037.9   (mgal)                       NAVD 88
 JV3323
 JV3323  VERT ORDER      -  FIRST     CLASS II
 JV3323
 JV3323.The horizontal coordinates were determined by differentially corrected
 JV3323.hand held GPS observations or other comparable positioning techniques
 JV3323.and have an estimated accuracy of +/- 3 meters.
 JV3323
 JV3323.The orthometric height was determined by differential leveling and
 JV3323.adjusted by the NATIONAL GEODETIC SURVEY
 JV3323.in June 1991.
 JV3323
 JV3323.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3323.GEOID18 height accuracy estimate available here.
 JV3323
 JV3323.Click photographs - Photos may exist for this station.
 JV3323
 JV3323.The dynamic height is computed by dividing the NAVD 88
 JV3323.geopotential number by the normal gravity value computed on the
 JV3323.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3323.degrees latitude (g = 980.6199 gals.).
 JV3323
 JV3323.The modeled gravity was interpolated from observed gravity values.
 JV3323
 JV3323;                    North         East    Units  Estimated Accuracy
 JV3323;SPC MD       -   228,071.9     337,023.6     MT  (+/- 3 meters HH1 GPS) 
 JV3323
 JV3323_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STK6561700133(NAD 83)
 JV3323
 JV3323                          SUPERSEDED SURVEY CONTROL
 JV3323
 JV3323  NGVD 29 (11/26/84)  198.285  (m)          650.54   (f) ADJUSTED    1 2
 JV3323
 JV3323.Superseded values are not recommended for survey control.
 JV3323
 JV3323.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3323.See file dsdata.pdf to determine how the superseded data were derived.
 JV3323
 JV3323_MARKER: DR = REFERENCE MARK DISK
 JV3323_SETTING: 65 = SET IN UNSPECIFIED ROCK OR BOULDER
 JV3323_SP_SET: UNSPECIFIED ROCK
 JV3323_STAMPING: ENDS NO 1 1957
 JV3323_MARK LOGO: CGS
 JV3323_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3323
 JV3323  HISTORY     - Date     Condition        Report By
 JV3323  HISTORY     - 1957     MONUMENTED       CGS
 JV3323  HISTORY     - 1961     GOOD             CGS
 JV3323  HISTORY     - 1979     GOOD             NGS
 JV3323  HISTORY     - 20080508 MARK NOT FOUND   GEOCAC
 JV3323
 JV3323                          STATION DESCRIPTION
 JV3323
 JV3323'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV3323'5 MI N FROM HAGERSTOWN.
 JV3323'5.0 MILES NORTH ALONG U.S. HIGHWAY 11 FROM THE JUNCTION OF U.S.
 JV3323'HIGHWAY 40 AT HAGERSTOWN, THENCE WEST 0.35 MILE ALONG A PAVED
 JV3323'ROAD, THENCE 0.15 MILE SOUTH ALONG NEW HIGHWAY SITE, 87.90 FEET
 JV3323'EAST-SOUTHEAST OF THE TRIANGULATION STATION, 74 FEET SOUTH OF
 JV3323'ROCK FENCE, AND 45 FEET EAST OF THE ROAD.  A STANDARD REFERENCE-MARK
 JV3323'DISK, STAMPED ENDS NO 1 1957 AND SET IN A DRILL HOLE IN ROCK.
 JV3323
 JV3323                          STATION RECOVERY (1961)
 JV3323
 JV3323'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961
 JV3323'RECOVERED IN GOOD CONDITION.
 JV3323
 JV3323                          STATION RECOVERY (1979)
 JV3323
 JV3323'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3323'RECOVERED IN GOOD CONDITION.
 JV3323
 JV3323                          STATION RECOVERY (2008)
 JV3323
 JV3323'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3323'REGRADING IN THE AREA APPEARS TO HAVE REMOVED OR BURIED THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3324 ***********************************************************************
 JV3324  DESIGNATION -  ENDS RM 2
 JV3324  PID         -  JV3324
 JV3324  STATE/COUNTY-  MD/WASHINGTON
 JV3324  COUNTRY     -  US
 JV3324  USGS QUAD   -  HAGERSTOWN (2016)
 JV3324
 JV3324                         *CURRENT SURVEY CONTROL
 JV3324  ______________________________________________________________________
 JV3324* NAD 83(1986) POSITION- 39 43 07.45   (N) 077 44 06.07   (W)   HD_HELD1
 JV3324* NAVD 88 ORTHO HEIGHT -   196.924 (meters)      646.07  (feet) ADJUSTED
 JV3324  ______________________________________________________________________
 JV3324  GEOID HEIGHT    -        -34.277 (meters)                     GEOID18
 JV3324  DYNAMIC HEIGHT  -        196.809 (meters)      645.70  (feet) COMP
 JV3324  MODELED GRAVITY -    980,037.9   (mgal)                       NAVD 88
 JV3324
 JV3324  VERT ORDER      -  FIRST     CLASS II
 JV3324
 JV3324.The horizontal coordinates were determined by differentially corrected
 JV3324.hand held GPS observations or other comparable positioning techniques
 JV3324.and have an estimated accuracy of +/- 3 meters.
 JV3324
 JV3324.The orthometric height was determined by differential leveling and
 JV3324.adjusted by the NATIONAL GEODETIC SURVEY
 JV3324.in June 1991.
 JV3324
 JV3324.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3324.GEOID18 height accuracy estimate available here.
 JV3324
 JV3324.Click photographs - Photos may exist for this station.
 JV3324
 JV3324.The dynamic height is computed by dividing the NAVD 88
 JV3324.geopotential number by the normal gravity value computed on the
 JV3324.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3324.degrees latitude (g = 980.6199 gals.).
 JV3324
 JV3324.The modeled gravity was interpolated from observed gravity values.
 JV3324
 JV3324;                    North         East    Units  Estimated Accuracy
 JV3324;SPC MD       -   228,055.1     336,974.1     MT  (+/- 3 meters HH1 GPS) 
 JV3324
 JV3324_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STK6556800117(NAD 83)
 JV3324
 JV3324                          SUPERSEDED SURVEY CONTROL
 JV3324
 JV3324  NGVD 29 (11/26/84)  197.120  (m)          646.72   (f) ADJUSTED    1 2
 JV3324
 JV3324.Superseded values are not recommended for survey control.
 JV3324
 JV3324.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3324.See file dsdata.pdf to determine how the superseded data were derived.
 JV3324
 JV3324_MARKER: DR = REFERENCE MARK DISK
 JV3324_SETTING: 65 = SET IN UNSPECIFIED ROCK OR BOULDER
 JV3324_SP_SET: UNSPECIFIED ROCK
 JV3324_STAMPING: ENDS NO 2 1957
 JV3324_MARK LOGO: CGS
 JV3324_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3324_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3324+SATELLITE: SATELLITE OBSERVATIONS - May 08, 2008
 JV3324
 JV3324  HISTORY     - Date     Condition        Report By
 JV3324  HISTORY     - 1957     MONUMENTED       CGS
 JV3324  HISTORY     - 1960     GOOD             CGS
 JV3324  HISTORY     - 1979     GOOD             NGS
 JV3324  HISTORY     - 20070120 GOOD             GEOCAC
 JV3324  HISTORY     - 20080508 GOOD             GEOCAC
 JV3324
 JV3324                          STATION DESCRIPTION
 JV3324
 JV3324'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV3324'5 MI N FROM HAGERSTOWN.
 JV3324'5.0 MILES NORTH ALONG U.S. HIGHWAY 11 FROM THE JUNCTION OF U.S.
 JV3324'HIGHWAY 40, AT HAGERSTOWN, THENCE WEST 0.35 MILE ALONG A PAVED
 JV3324'ROAD, THENCE 0.15 MILE SOUTH ALONG NEW HIGHWAY SITE, 112.24
 JV3324'FEET SOUTHWEST OF THE TRINAGULATION STATION, 90 FEET EAST OF
 JV3324'THE CENTERLINE OF EAST LANE OF THE ROAD, 30 FEET WEST OF A
 JV3324'GRAVEL ROAD AND 41 FEET NORTHWEST OF A LONE TREE.  A STANDARD
 JV3324'REFERENCE-MARK DISK, STAMPED ENDS NO 2 1957 AND SET IN A DRILL
 JV3324'HOLE IN ROCK.
 JV3324
 JV3324                          STATION RECOVERY (1960)
 JV3324
 JV3324'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960
 JV3324'RECOVERED IN GOOD CONDITION.
 JV3324
 JV3324                          STATION RECOVERY (1979)
 JV3324
 JV3324'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3324'RECOVERED IN GOOD CONDITION.
 JV3324
 JV3324                          STATION RECOVERY (2007)
 JV3324
 JV3324'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JV3324'MARK IS LOCATED NEAR THE SOUTH END OF A SMALL KNOLL AND IS ABOUT 10
 JV3324'FEET WEST OF RIGHT-OF-WAY FENCE.
 JV3324
 JV3324                          STATION RECOVERY (2008)
 JV3324
 JV3324'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3324'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5017 ***********************************************************************
 JV5017  DESIGNATION -  ENGINEER
 JV5017  PID         -  JV5017
 JV5017  STATE/COUNTY-  MD/QUEEN ANNES
 JV5017  COUNTRY     -  US
 JV5017  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5017
 JV5017                         *CURRENT SURVEY CONTROL
 JV5017  ______________________________________________________________________
 JV5017* NAD 83(1991) POSITION- 39 05 02.73576(N) 076 07 42.92309(W)   ADJUSTED
 JV5017* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5017  ______________________________________________________________________
 JV5017  GEOID HEIGHT    -        -33.588 (meters)                     GEOID18
 JV5017  LAPLACE CORR    -         -2.69  (seconds)                    DEFLEC18
 JV5017  HORZ ORDER      -  THIRD
 JV5017
 JV5017.The horizontal coordinates were established by classical geodetic methods
 JV5017.and adjusted by the National Geodetic Survey in January 1992.
 JV5017
 JV5017.The orthometric height was scaled from a topographic map.
 JV5017
 JV5017.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5017.GEOID18 height accuracy estimate available here.
 JV5017
 JV5017.Click photographs - Photos may exist for this station.
 JV5017
 JV5017.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5017
 JV5017. The following values were computed from the NAD 83(1991) position.
 JV5017
 JV5017;                    North         East     Units Scale Factor Converg.
 JV5017;SPC MD       -   157,701.344   475,393.271   MT  0.99995644   +0 32 48.9
 JV5017;SPC MD       -   517,391.83  1,559,686.09   sFT  0.99995644   +0 32 48.9
 JV5017;UTM  18      - 4,326,714.715   402,387.911   MT  0.99971732   -0 42 41.7
 JV5017
 JV5017!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5017!SPC MD       -   1.00000531  x   0.99995644  =   0.99996175
 JV5017!UTM  18      -   1.00000531  x   0.99971732  =   0.99972263
 JV5017
 JV5017:                Primary Azimuth Mark                     Grid Az
 JV5017:SPC MD       -  RUTH                                     149 50 54.9
 JV5017:UTM  18      -  RUTH                                     151 06 25.5
 JV5017
 JV5017_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0238726714(NAD 83)
 JV5017
 JV5017|---------------------------------------------------------------------|
 JV5017| PID    Reference Object                     Distance      Geod. Az  |
 JV5017|                                                           dddmmss.s |
 JV5017| JV5014 RUTH                                APPROX. 1.1 KM 1502343.8 |
 JV5017|---------------------------------------------------------------------|
 JV5017
 JV5017                          SUPERSEDED SURVEY CONTROL
 JV5017
 JV5017  NAD 83(1986)-  39 05 02.73013(N)    076 07 42.93509(W) AD(       ) 3
 JV5017  NAD 27      -  39 05 02.33900(N)    076 07 44.11000(W) AD(       ) 3
 JV5017  USSD        -  39 05 02.72300(N)    076 07 43.91400(W) AD(       ) 3
 JV5017
 JV5017.Superseded values are not recommended for survey control.
 JV5017
 JV5017.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5017.See file dsdata.pdf to determine how the superseded data were derived.
 JV5017
 JV5017_MARKER: H = DRILL HOLE
 JV5017_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5017_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5017+STABILITY: SURFACE MOTION
 JV5017
 JV5017  HISTORY     - Date     Condition        Report By
 JV5017  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5017  HISTORY     - 1941     GOOD             CGS
 JV5017
 JV5017                          STATION DESCRIPTION
 JV5017
 JV5017'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5017'STATION IS ON THE NORTHERN SHORE OF CORSICA RIVER, ABOUT 1 MILE E
 JV5017'OF CHESTER RIVER, 5/8 MILE NE OF EARLE WHARF, AND 50 YARDS W OF
 JV5017'EMORY WHARF, ON MARSHLAND, ABOUT 1 FOOT ABOVE HIGH WATER, 12 YARDS
 JV5017'N OF SHORE, AND 50 YARDS SE OF A POND.
 JV5017'
 JV5017'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5017'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5017'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5017'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5017'MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE
 JV5017'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5017'
 JV5017'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5017'FOLLOWS--NAIL IN BLAZE IN 6-INCH PEAR TREE, 99.95 FEET, S 41 DEG
 JV5017'03 MIN W.  EARLES WINDMILL, 7/8 MILE, S 60 DEG 37 MIN W. W LONE CEDAR
 JV5017'TREE, 125 YARDS, N 43 DEG 54 MIN W. S GABLE OF EMORYS BARN, 300
 JV5017'YARDS, N 10 DEG 23 MIN E. E CHIMNEY OF EMORYS HOUSE, 250 YARDS, N 48
 JV5017'DEG 11 MIN E.  W CHIMNEY OF HOUSE, 1-3/8 MILES, S 61 DEG 37 MIN E.
 JV5017'NE CORNER OF EMORYS WHARF HOUSE, 156.94 FEET, S 68 DEG 01 MIN E. E
 JV5017'CHIMNEY OF HOUSE, 7/8 MILE, S 00 DEG 05 MIN E.
 JV5017
 JV5017                          STATION RECOVERY (1941)
 JV5017
 JV5017'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5017'RECOVERED AS DESCRIBED.  STATION IS ON HARD MARSH 12 METERS NW OF
 JV5017'HIGH-WATER LINE.  IT IS 5.2 METERS FROM TRIANGULAR-SHAPED BLAZE IN
 JV5017'HACKBERRY BUSH AND 9 METERS SW OF NEW WIRE FENCE.  IT IS ABOUT 500
 JV5017'YARDS TO LARGE WHITE HOUSE AND 300 YARDS FROM WHARF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4738 ***********************************************************************
 AB4738  DESIGNATION -  ENGLAND
 AB4738  PID         -  AB4738
 AB4738  STATE/COUNTY-  MD/CARROLL
 AB4738  COUNTRY     -  US
 AB4738  USGS QUAD   -  NEW WINDSOR (2016)
 AB4738
 AB4738                         *CURRENT SURVEY CONTROL
 AB4738  ______________________________________________________________________
 AB4738* NAD 83(2011) POSITION- 39 31 53.24920(N) 077 04 21.20408(W)   ADJUSTED
 AB4738* NAD 83(2011) ELLIP HT-   182.484 (meters)        (06/27/12)   ADJUSTED
 AB4738* NAD 83(2011) EPOCH   -  2010.00
 AB4738* NAVD 88 ORTHO HEIGHT -   214.7   (meters)      704.    (feet) GPS OBS
 AB4738  ______________________________________________________________________
 AB4738  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4738  GEOID HEIGHT    -        -32.264 (meters)                     GEOID99
 AB4738  GEOID HEIGHT    -        -32.256 (meters)                     GEOID18
 AB4738  NAD 83(2011) X  -  1,102,057.641 (meters)                     COMP
 AB4738  NAD 83(2011) Y  - -4,801,267.499 (meters)                     COMP
 AB4738  NAD 83(2011) Z  -  4,038,114.074 (meters)                     COMP
 AB4738  LAPLACE CORR    -          3.88  (seconds)                    DEFLEC18
 AB4738
 AB4738  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4738  Standards:
 AB4738         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4738            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4738  -------------------------------------------------------------------
 AB4738  NETWORK    1.47   3.37           0.67   0.51   1.72      0.13635508
 AB4738  -------------------------------------------------------------------
 AB4738  Click here for local accuracies and other accuracy information.
 AB4738
 AB4738.The horizontal coordinates were established by GPS observations
 AB4738.and adjusted by the National Geodetic Survey in June 2012.
 AB4738
 AB4738.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4738.been affixed to the stable North American tectonic plate. See 
 AB4738.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4738
 AB4738.The horizontal coordinates are valid at the epoch date displayed above
 AB4738.which is a decimal equivalence of Year/Month/Day.
 AB4738
 AB4738.The orthometric height was determined by GPS observations and a
 AB4738.high-resolution geoid model.
 AB4738
 AB4738.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4738.GEOID18 height accuracy estimate available here.
 AB4738
 AB4738.Click photographs - Photos may exist for this station.
 AB4738
 AB4738.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4738
 AB4738.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4738
 AB4738.The ellipsoidal height was determined by GPS observations
 AB4738.and is referenced to NAD 83.
 AB4738
 AB4738. The following values were computed from the NAD 83(2011) position.
 AB4738
 AB4738;                    North         East     Units Scale Factor Converg.
 AB4738;SPC MD       -   207,010.080   393,761.871   MT  1.00001527   -0 02 43.9
 AB4738;SPC MD       -   679,165.57  1,291,867.07   sFT  1.00001527   -0 02 43.9
 AB4738;UTM  18      - 4,377,806.822   321,876.520   MT  0.99999065   -1 19 10.3
 AB4738
 AB4738!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4738!SPC MD       -   0.99997137  x   1.00001527  =   0.99998664
 AB4738!UTM  18      -   0.99997137  x   0.99999065  =   0.99996202
 AB4738
 AB4738:                Primary Azimuth Mark                     Grid Az
 AB4738:SPC MD       -  ENGLAND AZ MK                            256 44 55.6
 AB4738:UTM  18      -  ENGLAND AZ MK                            258 01 22.0
 AB4738
 AB4738_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2187677806(NAD 83)
 AB4738
 AB4738|---------------------------------------------------------------------|
 AB4738| PID    Reference Object                     Distance      Geod. Az  |
 AB4738|                                                           dddmmss.s |
 AB4738| AB4793 ENGLAND AZ MK                       APPROX. 0.5 KM 2564211.7 |
 AB4738|---------------------------------------------------------------------|
 AB4738
 AB4738                          SUPERSEDED SURVEY CONTROL
 AB4738
 AB4738  NAD 83(2007)-  39 31 53.24945(N)    077 04 21.20484(W) AD(2002.00) 0
 AB4738  ELLIP H (02/10/07)  182.503  (m)                       GP(2002.00)    
 AB4738  ELLIP H (08/30/02)  182.497  (m)                       GP(       ) 4 2
 AB4738  NAD 83(1991)-  39 31 53.24864(N)    077 04 21.20552(W) AD(       ) 1
 AB4738  ELLIP H (07/03/96)  182.430  (m)                       GP(       ) 1 1
 AB4738  NAVD 88 (07/03/96)  214.7    (m)  GEOID93  model used  GPS OBS        
 AB4738
 AB4738.Superseded values are not recommended for survey control.
 AB4738
 AB4738.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4738.See file dsdata.pdf to determine how the superseded data were derived.
 AB4738
 AB4738_MARKER: DD = SURVEY DISK
 AB4738_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4738_STAMPING: ENGLAND 1995
 AB4738_MARK LOGO: MD-013
 AB4738_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4738_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4738+STABILITY: SURFACE MOTION
 AB4738_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4738+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4738
 AB4738  HISTORY     - Date     Condition        Report By
 AB4738  HISTORY     - 1995     MONUMENTED       MD-013
 AB4738
 AB4738                          STATION DESCRIPTION
 AB4738
 AB4738'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4738'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTHWEST OF WESTMINSTER AND
 AB4738'ABOUT 1.5 MI (2.4 KM) SOUTHEAST OF NEW WINDSOR. TO REACH STATION FROM
 AB4738'THE INTERSECTION OF MD ROUTE 75 (GEEN VALLEY ROAD) AND MD ROUTE 31
 AB4738'(NEW WINDSOR ROAD) IN THE CENTER OF NEW WINDSOR, GO SOUTHWEST ON ROUTE
 AB4738'31 FOR 0.07 MI (0.11 KM) TO THE INTERSECTION WITH HIGH STREET. TURN
 AB4738'LEFT ON HIGH STREET AND GO SOUTH (STILL MD ROUTE 31) FOR 0.95 MI (1.53
 AB4738'KM) TO THE INTERSECTION WITH WAKEFIELD VALLEY ROAD. TURN LEFT ON
 AB4738'WAKEFIELD VALLEY ROAD AND GO EAST FOR 0.9 MI (1.4 KM) TO A T
 AB4738'INTERSECTION. TURN LEFT AND CONTINUE ON WAKEFIELD VALLEY ROAD
 AB4738'NORTHERLY FOR 0.8 MI (1.3 KM) TO THE STATION ON THE LEFT. STATION IS
 AB4738'ALSO 1.35 MI (2.17 KM) SOUTH OF THE INTERSECTION OF WAKEFIELD VALLEY
 AB4738'AND MD ROUTE 31 EAST OF NEW WINDSOR. STATION MARK IS SET IN THE TOP OF
 AB4738'A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AB4738'27.2 FT (8.3 M) WEST OF THE CENTERLINE OF THE ROAD, 78.0 FT (23.8 M)
 AB4738'NORTHWEST OF TELEPHONE POLE NO.45, 95 FT (29.0 M) SOUTHEAST OF THE
 AB4738'WESTERNMOST CORNER OF A WOODEN FENCE AND 102 FT (31.1 M) SOUTH OF THE
 AB4738'EASTERMOST CORNER OF THE FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4793 ***********************************************************************
 AB4793  DESIGNATION -  ENGLAND AZ MK
 AB4793  PID         -  AB4793
 AB4793  STATE/COUNTY-  MD/CARROLL
 AB4793  COUNTRY     -  US
 AB4793  USGS QUAD   -  NEW WINDSOR (2016)
 AB4793
 AB4793                         *CURRENT SURVEY CONTROL
 AB4793  ______________________________________________________________________
 AB4793* NAD 83(2011) POSITION- 39 31 49.27596(N) 077 04 42.91159(W)   ADJUSTED
 AB4793* NAD 83(2011) ELLIP HT-   166.232 (meters)        (06/27/12)   ADJUSTED
 AB4793* NAD 83(2011) EPOCH   -  2010.00
 AB4793* NAVD 88 ORTHO HEIGHT -   198.5   (meters)      651.    (feet) GPS OBS
 AB4793  ______________________________________________________________________
 AB4793  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4793  GEOID HEIGHT    -        -32.271 (meters)                     GEOID99
 AB4793  GEOID HEIGHT    -        -32.263 (meters)                     GEOID18
 AB4793  NAD 83(2011) X  -  1,101,566.983 (meters)                     COMP
 AB4793  NAD 83(2011) Y  - -4,801,447.257 (meters)                     COMP
 AB4793  NAD 83(2011) Z  -  4,038,009.216 (meters)                     COMP
 AB4793  LAPLACE CORR    -          4.00  (seconds)                    DEFLEC18
 AB4793
 AB4793  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4793  Standards:
 AB4793         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4793            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4793  -------------------------------------------------------------------
 AB4793  NETWORK    1.54   4.41           0.69   0.56   2.25      0.05168273
 AB4793  -------------------------------------------------------------------
 AB4793  Click here for local accuracies and other accuracy information.
 AB4793
 AB4793.The horizontal coordinates were established by GPS observations
 AB4793.and adjusted by the National Geodetic Survey in June 2012.
 AB4793
 AB4793.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4793.been affixed to the stable North American tectonic plate. See 
 AB4793.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4793
 AB4793.The horizontal coordinates are valid at the epoch date displayed above
 AB4793.which is a decimal equivalence of Year/Month/Day.
 AB4793
 AB4793.The orthometric height was determined by GPS observations and a
 AB4793.high-resolution geoid model.
 AB4793
 AB4793.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4793.GEOID18 height accuracy estimate available here.
 AB4793
 AB4793.Click photographs - Photos may exist for this station.
 AB4793
 AB4793.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4793
 AB4793.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4793
 AB4793.The ellipsoidal height was determined by GPS observations
 AB4793.and is referenced to NAD 83.
 AB4793
 AB4793. The following values were computed from the NAD 83(2011) position.
 AB4793
 AB4793;                    North         East     Units Scale Factor Converg.
 AB4793;SPC MD       -   206,887.970   393,243.342   MT  1.00001504   -0 02 57.6
 AB4793;SPC MD       -   678,764.95  1,290,165.86   sFT  1.00001504   -0 02 57.6
 AB4793;UTM  18      - 4,377,696.274   321,355.417   MT  0.99999294   -1 19 24.0
 AB4793
 AB4793!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4793!SPC MD       -   0.99997392  x   1.00001504  =   0.99998896
 AB4793!UTM  18      -   0.99997392  x   0.99999294  =   0.99996686
 AB4793
 AB4793:                Primary Azimuth Mark                     Grid Az
 AB4793:SPC MD       -  ENGLAND                                  076 44 55.4
 AB4793:UTM  18      -  ENGLAND                                  078 01 21.8
 AB4793
 AB4793_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2135577696(NAD 83)
 AB4793
 AB4793|---------------------------------------------------------------------|
 AB4793| PID    Reference Object                     Distance      Geod. Az  |
 AB4793|                                                           dddmmss.s |
 AB4793| AB4738 ENGLAND                             APPROX. 0.5 KM 0764157.8 |
 AB4793|---------------------------------------------------------------------|
 AB4793
 AB4793                          SUPERSEDED SURVEY CONTROL
 AB4793
 AB4793  NAD 83(2007)-  39 31 49.27620(N)    077 04 42.91236(W) AD(2002.00) 0
 AB4793  ELLIP H (02/10/07)  166.252  (m)                       GP(2002.00)    
 AB4793  ELLIP H (08/30/02)  166.248  (m)                       GP(       ) 4 2
 AB4793  NAD 83(1991)-  39 31 49.27544(N)    077 04 42.91300(W) AD(       ) 1
 AB4793  ELLIP H (07/03/96)  166.179  (m)                       GP(       ) 1 1
 AB4793  NAVD 88 (07/03/96)  198.5    (m)  GEOID93  model used  GPS OBS        
 AB4793
 AB4793.Superseded values are not recommended for survey control.
 AB4793
 AB4793.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4793.See file dsdata.pdf to determine how the superseded data were derived.
 AB4793
 AB4793_MARKER: DD = SURVEY DISK
 AB4793_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4793_STAMPING: ENGLAND AZI 1995
 AB4793_MARK LOGO: MD-013
 AB4793_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4793_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4793+STABILITY: SURFACE MOTION
 AB4793_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4793+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4793
 AB4793  HISTORY     - Date     Condition        Report By
 AB4793  HISTORY     - 1995     MONUMENTED       MD-013
 AB4793
 AB4793                          STATION DESCRIPTION
 AB4793
 AB4793'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4793'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTHWEST OF WESTMINSTER AND
 AB4793'ABOUT 1.5 MI (2.4 KM) SOUTHEAST OF NEW WINDSOR. TO REACH STATION FROM
 AB4793'THE INTERSECTION OF MD ROUTE 31 (NEW WINDSOR ROAD) AND MD ROUTE 75
 AB4793'(GREEN VALLEY ROAD) AT NEW WINDSOR, GO NORTHEAST ON MD ROUTE 31 FOR
 AB4793'1.9 MI (3.1 KM) TO THE INTERSECTION WITH WAKEFIELD VALLEY ROAD. TURN
 AB4793'RIGHT ON WAKEFILED VALLEY ROAD AND GO SOUTH FOR 1.65 MI (2.66 KM) TO
 AB4793'THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4793'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 25.7 FT
 AB4793'(7.8 M) SOUTHEAST OF THE CENTERLINE OF THE ROAD, 4.0 FT (1.2 M)
 AB4793'NORTHWEST OF THE EDGE OF A CULTIVATED FIELD, 64.5 FT (19.7 M)
 AB4793'NORTHEAST OF THE NORTHEAST END OF A 12 IN CULVERT PIPE, 84.5 FT (25.8
 AB4793'M) NORTHEAST OF THE SOUTHWEST END OF THE PIPE, 120.8 FT (36.8 M) SOUTH
 AB4793'OF A ROAD SIGN AND 331 FT (100.9 M) NORTHEAST OF THE CENTERLINE OF A
 AB4793'DRIVEWAY LEADING SOUTHEAST TO HOUSE NO. 1643.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6294 ***********************************************************************
 JV6294  DESIGNATION -  ENGLE
 JV6294  PID         -  JV6294
 JV6294  STATE/COUNTY-  MD/HARFORD
 JV6294  COUNTRY     -  US
 JV6294  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6294
 JV6294                         *CURRENT SURVEY CONTROL
 JV6294  ______________________________________________________________________
 JV6294* NAD 83(2011) POSITION- 39 33 49.46402(N) 076 29 54.30245(W)   ADJUSTED
 JV6294* NAD 83(2011) ELLIP HT-   150.055 (meters)        (06/27/12)   ADJUSTED
 JV6294* NAD 83(2011) EPOCH   -  2010.00
 JV6294* NAVD 88 ORTHO HEIGHT -   182.573 (meters)      598.99  (feet) ADJUSTED
 JV6294  ______________________________________________________________________
 JV6294  GEOID HEIGHT    -        -32.524 (meters)                     GEOID18
 JV6294  NAD 83(2011) X  -  1,149,574.537 (meters)                     COMP
 JV6294  NAD 83(2011) Y  - -4,787,739.942 (meters)                     COMP
 JV6294  NAD 83(2011) Z  -  4,040,857.204 (meters)                     COMP
 JV6294  LAPLACE CORR    -         -2.64  (seconds)                    DEFLEC18
 JV6294  DYNAMIC HEIGHT  -        182.478 (meters)      598.68  (feet) COMP
 JV6294  MODELED GRAVITY -    980,104.1   (mgal)                       NAVD 88
 JV6294
 JV6294  VERT ORDER      -  FIRST     CLASS II
 JV6294
 JV6294  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6294  Standards:
 JV6294         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6294            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6294  -------------------------------------------------------------------
 JV6294  NETWORK    0.74   1.12           0.33   0.27   0.57     -0.08122910
 JV6294  -------------------------------------------------------------------
 JV6294  Click here for local accuracies and other accuracy information.
 JV6294
 JV6294.The horizontal coordinates were established by GPS observations
 JV6294.and adjusted by the National Geodetic Survey in June 2012.
 JV6294
 JV6294.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6294.been affixed to the stable North American tectonic plate. See 
 JV6294.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6294
 JV6294.The horizontal coordinates are valid at the epoch date displayed above
 JV6294.which is a decimal equivalence of Year/Month/Day.
 JV6294
 JV6294.The orthometric height was determined by differential leveling and
 JV6294.adjusted by the NATIONAL GEODETIC SURVEY
 JV6294.in June 1991.
 JV6294
 JV6294.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6294.GEOID18 height accuracy estimate available here.
 JV6294
 JV6294.Click photographs - Photos may exist for this station.
 JV6294
 JV6294.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6294
 JV6294.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6294
 JV6294.The ellipsoidal height was determined by GPS observations
 JV6294.and is referenced to NAD 83.
 JV6294
 JV6294.The dynamic height is computed by dividing the NAVD 88
 JV6294.geopotential number by the normal gravity value computed on the
 JV6294.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6294.degrees latitude (g = 980.6199 gals.).
 JV6294
 JV6294.The modeled gravity was interpolated from observed gravity values.
 JV6294
 JV6294. The following values were computed from the NAD 83(2011) position.
 JV6294
 JV6294;                    North         East     Units Scale Factor Converg.
 JV6294;SPC MD       -   210,710.213   443,104.132   MT  1.00002188   +0 18 53.3
 JV6294;SPC MD       -   691,305.09  1,453,750.81   sFT  1.00002188   +0 18 53.3
 JV6294;UTM  18      - 4,380,410.634   371,282.507   MT  0.99980399   -0 57 16.3
 JV6294
 JV6294!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6294!SPC MD       -   0.99997646  x   1.00002188  =   0.99999834
 JV6294!UTM  18      -   0.99997646  x   0.99980399  =   0.99978045
 JV6294
 JV6294:                Primary Azimuth Mark                     Grid Az
 JV6294:SPC MD       -  ENGLE AZ MK                              166 53 44.4
 JV6294:UTM  18      -  ENGLE AZ MK                              168 09 54.0
 JV6294
 JV6294_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7128280410(NAD 83)
 JV6294
 JV6294|---------------------------------------------------------------------|
 JV6294| PID    Reference Object                     Distance      Geod. Az  |
 JV6294|                                                           dddmmss.s |
 JV6294| JV6328 ENGLE AZ MK                         APPROX. 0.7 KM 1671237.7 |
 JV6294|---------------------------------------------------------------------|
 JV6294
 JV6294                          SUPERSEDED SURVEY CONTROL
 JV6294
 JV6294  NAD 83(2007)-  39 33 49.46421(N)    076 29 54.30293(W) AD(2002.00) 0
 JV6294  ELLIP H (02/10/07)  150.077  (m)                       GP(2002.00)    
 JV6294  ELLIP H (08/30/02)  150.075  (m)                       GP(       ) 4 2
 JV6294  ELLIP H (03/31/00)  150.026  (m)                       GP(       ) 3 1
 JV6294  NAD 83(1991)-  39 33 49.46467(N)    076 29 54.30115(W) AD(       ) 1
 JV6294  ELLIP H (01/27/92)  150.079  (m)                       GP(       ) 4 1
 JV6294  NAD 83(1986)-  39 33 49.45802(N)    076 29 54.30824(W) AD(       ) 1
 JV6294  NAVD 88             182.57   (m)          599.0    (f) LEVELING    3  
 JV6294  NGVD 29             182.81   (m)          599.8    (f) LEVELING    3  
 JV6294
 JV6294.Superseded values are not recommended for survey control.
 JV6294
 JV6294.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6294.See file dsdata.pdf to determine how the superseded data were derived.
 JV6294
 JV6294_MARKER: DD = SURVEY DISK
 JV6294_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6294_STAMPING: 62 ENGLE 1989
 JV6294_MARK LOGO: MD-025
 JV6294_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6294_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6294+STABILITY: SURFACE MOTION
 JV6294_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6294+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2001
 JV6294
 JV6294  HISTORY     - Date     Condition        Report By
 JV6294  HISTORY     - 1989     MONUMENTED       RDA
 JV6294  HISTORY     - 19970615 GOOD             MD-005
 JV6294  HISTORY     - 20010217 GOOD             USPSQD
 JV6294
 JV6294                          STATION DESCRIPTION
 JV6294
 JV6294'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6294'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 9
 JV6294'MILES WEST OF THE VILLAGE OF BEL AIR.  TO REACH THE STATION FROM THE
 JV6294'INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 152 PROCEED
 JV6294'NORTHWEST ALONG HIGHWAY 152 7.7 MILES TO ITS INTERSECTION WITH POCOCK
 JV6294'ROAD AND THE STATION ON THE LEFT.  THE STATION IS A STANDARD HARFORD
 JV6294'COUNTY STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED
 JV6294'62 ENGLE 1989.  THE STATION IS 27.9 FEET WEST OF THE CENTERLINE OF
 JV6294'HIGHWAY 152, 31.5 FEET NORTHEAST OF THE CENTERLINE OF POCOCK ROAD,
 JV6294'40.0 FEET SOUTH OF G AND E POWER POLE NUMBER 118050.
 JV6294
 JV6294                          STATION RECOVERY (1997)
 JV6294
 JV6294'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV6294'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) RECOVERED
 JV6294'AS DESCRIBED.
 JV6294
 JV6294                          STATION RECOVERY (2001)
 JV6294
 JV6294'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV6294'REMOVE THE LAST LINE OF DESCRIPTION STATING THE POWER POLE NUMBER.
 JV6294'THE NUMBER ON THE POLE IS NOT VISIBLE.  IT IS COVERED BY A METAL
 JV6294'PLATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6328 ***********************************************************************
 JV6328  DESIGNATION -  ENGLE AZ MK
 JV6328  PID         -  JV6328
 JV6328  STATE/COUNTY-  MD/HARFORD
 JV6328  COUNTRY     -  US
 JV6328  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6328
 JV6328                         *CURRENT SURVEY CONTROL
 JV6328  ______________________________________________________________________
 JV6328* NAD 83(2011) POSITION- 39 33 26.07976(N) 076 29 47.44490(W)   ADJUSTED
 JV6328* NAD 83(2011) ELLIP HT-   147.369 (meters)        (06/27/12)   ADJUSTED
 JV6328* NAD 83(2011) EPOCH   -  2010.00
 JV6328* NAVD 88 ORTHO HEIGHT -   179.888 (meters)      590.18  (feet) ADJUSTED
 JV6328  ______________________________________________________________________
 JV6328  GEOID HEIGHT    -        -32.533 (meters)                     GEOID18
 JV6328  NAD 83(2011) X  -  1,149,840.483 (meters)                     COMP
 JV6328  NAD 83(2011) Y  - -4,788,146.336 (meters)                     COMP
 JV6328  NAD 83(2011) Z  -  4,040,299.481 (meters)                     COMP
 JV6328  LAPLACE CORR    -         -2.71  (seconds)                    DEFLEC18
 JV6328  DYNAMIC HEIGHT  -        179.795 (meters)      589.88  (feet) COMP
 JV6328  MODELED GRAVITY -    980,103.6   (mgal)                       NAVD 88
 JV6328
 JV6328  VERT ORDER      -  FIRST     CLASS II
 JV6328
 JV6328  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6328  Standards:
 JV6328         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6328            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6328  -------------------------------------------------------------------
 JV6328  NETWORK    1.23   3.78           0.51   0.48   1.93      0.33103127
 JV6328  -------------------------------------------------------------------
 JV6328  Click here for local accuracies and other accuracy information.
 JV6328
 JV6328.The horizontal coordinates were established by GPS observations
 JV6328.and adjusted by the National Geodetic Survey in June 2012.
 JV6328
 JV6328.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6328.been affixed to the stable North American tectonic plate. See 
 JV6328.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6328
 JV6328.The horizontal coordinates are valid at the epoch date displayed above
 JV6328.which is a decimal equivalence of Year/Month/Day.
 JV6328
 JV6328.The orthometric height was determined by differential leveling and
 JV6328.adjusted by the NATIONAL GEODETIC SURVEY
 JV6328.in June 1991.
 JV6328
 JV6328.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6328.GEOID18 height accuracy estimate available here.
 JV6328
 JV6328.Click photographs - Photos may exist for this station.
 JV6328
 JV6328.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6328
 JV6328.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6328
 JV6328.The ellipsoidal height was determined by GPS observations
 JV6328.and is referenced to NAD 83.
 JV6328
 JV6328.The dynamic height is computed by dividing the NAVD 88
 JV6328.geopotential number by the normal gravity value computed on the
 JV6328.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6328.degrees latitude (g = 980.6199 gals.).
 JV6328
 JV6328.The modeled gravity was interpolated from observed gravity values.
 JV6328
 JV6328. The following values were computed from the NAD 83(2011) position.
 JV6328
 JV6328;                    North         East     Units Scale Factor Converg.
 JV6328;SPC MD       -   209,989.925   443,271.806   MT  1.00002052   +0 18 57.6
 JV6328;SPC MD       -   688,941.95  1,454,300.92   sFT  1.00002052   +0 18 57.6
 JV6328;UTM  18      - 4,379,686.966   371,434.152   MT  0.99980351   -0 57 11.5
 JV6328
 JV6328!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6328!SPC MD       -   0.99997688  x   1.00002052  =   0.99999740
 JV6328!UTM  18      -   0.99997688  x   0.99980351  =   0.99978039
 JV6328
 JV6328:                Primary Azimuth Mark                     Grid Az
 JV6328:SPC MD       -  ENGLE                                    346 53 44.4
 JV6328:UTM  18      -  ENGLE                                    348 09 53.5
 JV6328
 JV6328_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7143479686(NAD 83)
 JV6328
 JV6328|---------------------------------------------------------------------|
 JV6328| PID    Reference Object                     Distance      Geod. Az  |
 JV6328|                                                           dddmmss.s |
 JV6328| JV6294 ENGLE                               APPROX. 0.7 KM 3471242.0 |
 JV6328|---------------------------------------------------------------------|
 JV6328
 JV6328                          SUPERSEDED SURVEY CONTROL
 JV6328
 JV6328  NAD 83(2007)-  39 33 26.07984(N)    076 29 47.44570(W) AD(2002.00) 0
 JV6328  ELLIP H (02/10/07)  147.383  (m)                       GP(2002.00)    
 JV6328  ELLIP H (09/18/02)  147.382  (m)                       GP(       ) 4 2
 JV6328  NAD 83(1991)-  39 33 26.08031(N)    076 29 47.44393(W) AD(       ) 1
 JV6328  ELLIP H (01/27/92)  147.384  (m)                       GP(       ) 4 1
 JV6328  NAD 83(1986)-  39 33 26.07366(N)    076 29 47.45104(W) AD(       ) 1
 JV6328  NGVD 29             180.13   (m)          591.0    (f) LEVELING    3  
 JV6328
 JV6328.Superseded values are not recommended for survey control.
 JV6328
 JV6328.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6328.See file dsdata.pdf to determine how the superseded data were derived.
 JV6328
 JV6328_MARKER: DZ = AZIMUTH MARK DISK
 JV6328_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6328_STAMPING: 62 ENGLE 1989
 JV6328_MARK LOGO: MD-025
 JV6328_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6328_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6328+STABILITY: SURFACE MOTION
 JV6328_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6328+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2001
 JV6328
 JV6328  HISTORY     - Date     Condition        Report By
 JV6328  HISTORY     - 1989     MONUMENTED       RDA
 JV6328  HISTORY     - 20010217 GOOD             USPSQD
 JV6328
 JV6328                          STATION DESCRIPTION
 JV6328
 JV6328'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6328'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 9
 JV6328'MILES WEST OF THE VILLAGE OF BEL AIR.  TO REACH THE STATION FROM THE
 JV6328'INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 152 PROCEED
 JV6328'NORTHWEST ALONG HIGHWAY 152 7.7 MILES TO ITS INTERSECTION WITH POCOCK
 JV6328'ROAD AND THE STATION ON THE LEFT.  TO REACH THE AZIMUTH MARK FROM THE
 JV6328'STATION PROCEED SOUTH ALONG HIGHWAY 152 0.4 MILE TO ITS INTERSECTION
 JV6328'WITH HESS ROAD.  TURN RIGHT AND PROCEED WEST ALONG HESS ROAD 150 FEET
 JV6328'TO ITS INTERSECTION WITH ELY ROAD AND THE MARK ON THE RIGHT.  THE
 JV6328'MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET IN CONCRETE ABOUT
 JV6328'1 INCH BELOW GROUND STAMPED 62 ENGLE 1989.  THE MARK IS 169.0 FEET
 JV6328'WEST OF THE CENTERLINE OF HIGHWAY 152, 26.6 FEET NORTH OF THE
 JV6328'CENTERLINE OF HESS ROAD, 26.0 EAST FEET FROM THE CENTERLINE OF ELY
 JV6328'ROAD.
 JV6328
 JV6328                          STATION RECOVERY (2001)
 JV6328
 JV6328'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV6328'AFTER THE DESCRIPTION - BELOW GROUND STAMPED 62 ENGLE 1989, ADD - 5'
 JV6328'NORTH OF A WITNESS POST.  THE STATION IS LOCATED 1.53 MI. NORTH ON
 JV6328'ROUTE 152 OF INTERSECTION OF ROUTE 152 AND ROUTE 165.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6559 ***********************************************************************
 HV6559  DESIGNATION -  ENOUGH
 HV6559  PID         -  HV6559
 HV6559  STATE/COUNTY-  MD/ST MARYS
 HV6559  COUNTRY     -  US
 HV6559  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6559
 HV6559                         *CURRENT SURVEY CONTROL
 HV6559  ______________________________________________________________________
 HV6559* NAD 83(1993) POSITION- 38 07 00.92104(N) 076 23 48.85463(W)   ADJUSTED
 HV6559* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6559  ______________________________________________________________________
 HV6559  GEOID HEIGHT    -        -34.980 (meters)                     GEOID18
 HV6559  LAPLACE CORR    -         -5.99  (seconds)                    DEFLEC18
 HV6559  HORZ ORDER      -  THIRD
 HV6559
 HV6559.The horizontal coordinates were established by classical geodetic methods
 HV6559.and adjusted by the National Geodetic Survey in November 1994.
 HV6559
 HV6559.The orthometric height was scaled from a topographic map.
 HV6559
 HV6559.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6559.GEOID18 height accuracy estimate available here.
 HV6559
 HV6559.Click photographs - Photos may exist for this station.
 HV6559
 HV6559.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6559
 HV6559. The following values were computed from the NAD 83(1993) position.
 HV6559
 HV6559;                    North         East     Units Scale Factor Converg.
 HV6559;SPC MD       -    50,155.523   452,888.753   MT  1.00003689   +0 22 42.7
 HV6559;SPC MD       -   164,551.91  1,485,852.52   sFT  1.00003689   +0 22 42.7
 HV6559;SPC VA N     - 2,052,089.793 3,684,407.766   MT  0.99998630   +1 18 45.3
 HV6559;SPC VA N     - 6,732,564.60 12,087,927.81   sFT  0.99998630   +1 18 45.3
 HV6559;SPC VA S     - 1,199,998.125 3,684,416.863   MT  1.00003088   +1 16 35.1
 HV6559;SPC VA S     - 3,936,993.85 12,087,957.66   sFT  1.00003088   +1 16 35.1
 HV6559;UTM  18      - 4,219,709.462   377,547.619   MT  0.99978467   -0 51 44.5
 HV6559
 HV6559!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6559!SPC MD       -   1.00000522  x   1.00003689  =   1.00004211
 HV6559!SPC VA N     -   1.00000522  x   0.99998630  =   0.99999152
 HV6559!SPC VA S     -   1.00000522  x   1.00003088  =   1.00003610
 HV6559!UTM  18      -   1.00000522  x   0.99978467  =   0.99978989
 HV6559
 HV6559:                Primary Azimuth Mark                     Grid Az
 HV6559:SPC MD       -  IN MSFC 1908                             273 27 59.8
 HV6559:SPC VA N     -  IN MSFC 1908                             272 31 57.2
 HV6559:SPC VA S     -  IN MSFC 1908                             272 34 07.4
 HV6559:UTM  18      -  IN MSFC 1908                             274 42 27.0
 HV6559
 HV6559_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7754719709(NAD 83)
 HV6559
 HV6559|---------------------------------------------------------------------|
 HV6559| PID    Reference Object                     Distance      Geod. Az  |
 HV6559|                                                           dddmmss.s |
 HV6559| CX2742 ENOUGH RM                            19.750 METERS 01951     |
 HV6559| HV6562 FACTORY STACK PIPE MSFC             408.334 METERS 2442400.9 |
 HV6559| HV6560 PIER MSFC                           415.610 METERS 2540948.4 |
 HV6559| HV6546 IN MSFC 1908                        APPROX. 0.7 KM 2735042.5 |
 HV6559| HV6545 DRUM MSFC 1908                      307.389 METERS 29934     |
 HV6559|---------------------------------------------------------------------|
 HV6559
 HV6559                          SUPERSEDED SURVEY CONTROL
 HV6559
 HV6559  NAD 83(1991)-  38 07 00.91997(N)    076 23 48.85746(W) AD(       ) 3
 HV6559  NAD 83(1986)-  38 07 00.92131(N)    076 23 48.87137(W) AD(       ) 3
 HV6559  NAD 27      -  38 07 00.49800(N)    076 23 50.06700(W) AD(       ) 3
 HV6559  USSD        -  38 07 00.87600(N)    076 23 49.77900(W) AD(       ) 3
 HV6559
 HV6559.Superseded values are not recommended for survey control.
 HV6559
 HV6559.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6559.See file dsdata.pdf to determine how the superseded data were derived.
 HV6559
 HV6559_MARKER: H = DRILL HOLE
 HV6559_SETTING: 0 = UNSPECIFIED SETTING
 HV6559
 HV6559  HISTORY     - Date     Condition        Report By
 HV6559  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6559  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6559  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6559
 HV6559                          STATION DESCRIPTION
 HV6559
 HV6559'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6559'STATION IS ON SOUTHEASTERN SHORE OF NORTHEASTERN BRANCH OF SMITH
 HV6559'CREEK, ABOUT 1/4 MILE ENE OF MILLERS WHARF, ON A LIGHTLY WOODED BANK
 HV6559'ABOUT 12 FEET ABOVE HIGH WATER, 5 YARDS BACK FROM EDGE OF BANK, 40
 HV6559'YARDS SW OF A HOUSE, AND 45 YARDS NW OF A BARN.
 HV6559'
 HV6559'STATION MARK IS A HOLE IN A 3-INCH SQUARE STUB WITH THE TOP ABOUT
 HV6559'3 INCHES ABOVE SURFACE OF GROUND.
 HV6559'
 HV6559'THE REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV6559'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6559'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6559'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 HV6559'IS NEAR A FENCE, 19.75 METERS (64.8 FEET) FROM THE STATION
 HV6559'N 19 DEG 51 MIN E.  DISTANCES AND BEARINGS FROM THE STATION
 HV6559'TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NORTH GABLE OF
 HV6559'STORE AT WYNNE, 1/4 MILE, S 63 DEG 45 MIN W.  CHIMNEY OF HOUSE, 1/2
 HV6559'MILE, N 19 DEG 11 MIN E.  NEAR GABLE OF LOGAN DUNBARS HOUSE, 40
 HV6559'YARDS, N 32 DEG 08 MIN E.  W POST OF SMALL GATE, 28 YARDS, N 53 DEG
 HV6559'36 MIN E.  N GABLE OF BARN, 45 YARDS, S 51 DEG 05 MIN E.  N CHIMNEY
 HV6559'OF FRED DUNBARS HOUSE, 1/4 MILE, S 31 DEG 14 MIN E.  E CHIMNEY OF
 HV6559'2-STORY HOUSE, 1/2 MILE, S 13 DEG 57 MIN E.
 HV6559
 HV6559                          STATION RECOVERY (1942)
 HV6559
 HV6559'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6559'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED FOR
 HV6559'BY TWO MEN FOR 1-1/2 HOURS.  MR. DUNBAR, WHO HAS BEEN A RESIDENT ON
 HV6559'THIS PROPERTY FOR 71 YEARS, REPORTED SEEING THE STUB BEFORE IT
 HV6559'ROTTED, BUT HAD NEVER SEEN THE CONCRETE REFERENCE MARK.  IT IS
 HV6559'RECOMMENDED THAT THIS REFERENCE MARK BE CLASSIFIED AS LOST.
 HV6559
 HV6559                          STATION RECOVERY (1958)
 HV6559
 HV6559'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6559'A THOROUGH SEARCH ALONG THE BANK AT THE STATIONS PLOTTED POSITION
 HV6559'WAS MADE.  NO TRACE OF THE MARK COULD BE FOUND.  THERE IS EVIDENCE
 HV6559'THAT THE BANK HAS ERODED CONSIDERABLY IN LATE YEARS.  THIS STATION
 HV6559'SHOULD BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6041 ***********************************************************************
 HV6041  DESIGNATION -  ENTER
 HV6041  PID         -  HV6041
 HV6041  STATE/COUNTY-  MD/TALBOT
 HV6041  COUNTRY     -  US
 HV6041  USGS QUAD   -  OXFORD (2016)
 HV6041
 HV6041                         *CURRENT SURVEY CONTROL
 HV6041  ______________________________________________________________________
 HV6041* NAD 83(1991) POSITION- 38 39 43.98846(N) 076 09 36.71131(W)   ADJUSTED
 HV6041* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6041  ______________________________________________________________________
 HV6041  GEOID HEIGHT    -        -34.709 (meters)                     GEOID18
 HV6041  LAPLACE CORR    -         -3.91  (seconds)                    DEFLEC18
 HV6041  HORZ ORDER      -  THIRD
 HV6041
 HV6041.The horizontal coordinates were established by classical geodetic methods
 HV6041.and adjusted by the National Geodetic Survey in January 1992.
 HV6041
 HV6041.The orthometric height was scaled from a topographic map.
 HV6041
 HV6041.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6041.GEOID18 height accuracy estimate available here.
 HV6041
 HV6041.Click photographs - Photos may exist for this station.
 HV6041
 HV6041.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6041
 HV6041. The following values were computed from the NAD 83(1991) position.
 HV6041
 HV6041;                    North         East     Units Scale Factor Converg.
 HV6041;SPC MD       -   110,846.386   473,089.496   MT  0.99995676   +0 31 37.5
 HV6041;SPC MD       -   363,668.52  1,552,127.79   sFT  0.99995676   +0 31 37.5
 HV6041;UTM  18      - 4,279,932.266   399,059.014   MT  0.99972547   -0 43 29.5
 HV6041
 HV6041!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6041!SPC MD       -   1.00000533  x   0.99995676  =   0.99996209
 HV6041!UTM  18      -   1.00000533  x   0.99972547  =   0.99973079
 HV6041
 HV6041:                Primary Azimuth Mark                     Grid Az
 HV6041:SPC MD       -  STRAW                                    075 44 55.6
 HV6041:UTM  18      -  STRAW                                    077 00 02.6
 HV6041
 HV6041_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9905979932(NAD 83)
 HV6041
 HV6041|---------------------------------------------------------------------|
 HV6041| PID    Reference Object                     Distance      Geod. Az  |
 HV6041|                                                           dddmmss.s |
 HV6041| HV5990 STRAW                               APPROX. 1.0 KM 0761633.1 |
 HV6041|---------------------------------------------------------------------|
 HV6041
 HV6041                          SUPERSEDED SURVEY CONTROL
 HV6041
 HV6041  NAD 83(1986)-  38 39 43.98518(N)    076 09 36.72725(W) AD(       ) 3
 HV6041  NAD 27      -  38 39 43.55300(N)    076 09 37.94400(W) AD(       ) 3
 HV6041  USSD        -  38 39 43.94500(N)    076 09 37.75200(W) AD(       ) 3
 HV6041
 HV6041.Superseded values are not recommended for survey control.
 HV6041
 HV6041.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6041.See file dsdata.pdf to determine how the superseded data were derived.
 HV6041
 HV6041_MARKER: H = DRILL HOLE
 HV6041_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6041_PROJECTION: PROJECTING 10 CENTIMETERS
 HV6041_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6041
 HV6041  HISTORY     - Date     Condition        Report By
 HV6041  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6041  HISTORY     - 1939     MARK NOT FOUND   CGS
 HV6041  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6041
 HV6041                          STATION DESCRIPTION
 HV6041
 HV6041'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6041'ON THE NORTHERN SHORE OF ISLAND CREEK, ON POINT AT E SIDE OF
 HV6041'ENTRANCE TO SMALL COVE, ABOUT 1/8 MILE NE OF CHOPTANK RIVER AND 1
 HV6041'3/8 MILES ENE OF CHOPTANK RIVER LIGHT, IN A CULTIVATED FIELD,
 HV6041'ABOUT 6 FEET ABOVE HIGH WATER, 16 YARDS N OF EDGE OF BANK OF
 HV6041'CREEK, 18 YARDS SSE OF EDGE OF BANK OF COVE, 30 YARDS ENE OF
 HV6041'OUTLET OF COVE, AND 250 YARDS W BY S OF FRAME HOUSE.  STATION IS
 HV6041'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV6041'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6041'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV6041'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE MARK IS
 HV6041'THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2
 HV6041'INCHES BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO
 HV6041'VARIOUS POINTS OF THE REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 HV6041'4-INCH LOCUST TREE, 23.93 METERS (78.5 FEET), S 69 DEG 14 MIN W.
 HV6041'NAIL IN BLAZE IN 6-INCH LOCUST TREE 39.96 METERS (131.1 FEET), N
 HV6041'40 DEG 54 MIN W.  NAIL IN BLAZE IN 10-INCH CEDAR TREE, 16.91
 HV6041'METERS (55.5 FEET), N 1 DEG 17 MIN E. LEFT CORNER OF LEFT CHIMNEY
 HV6041'OF HOUSE, 2 MILES, N 9 DEG 35 MIN E. LEFT CORNER OF HOUSE, 1/8
 HV6041'MILE, N 65 DEG 35 MIN E.  NEAR CORNER OF HOUSE, 1-1/2 MILES, S 83
 HV6041'DEG 49 MIN E.
 HV6041
 HV6041                          STATION RECOVERY (1939)
 HV6041
 HV6041'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV6041'STATION SEARCHED FOR BUT NOT FOUND.
 HV6041
 HV6041                          STATION RECOVERY (1940)
 HV6041
 HV6041'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6041'STATION VISITED THREE TIMES BUT NOT RECOVERED.  POSITION IS AS
 HV6041'DESCRIBED BUT REFERENCE TREES ARE OUT.  OYSTERMAN CLAIMS HE SAW IT
 HV6041'ABOUT A YEAR AGO AND FARMER REMEMBERED HAVING STRUCK OBSTACLE WITH
 HV6041'PLOW AT EDGE OF FIELD.  AREA WAS SPADED AND OBSTACLE TURNED OUT
 HV6041'TO BE NATURAL ROCK.  POSITION IS OBSCURED BY HEAVY GROWTH OF
 HV6041'VINES.  MONUMENT MAY STILL BE IN PLACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2319 ***********************************************************************
 JV2319  DESIGNATION -  ERMAN
 JV2319  PID         -  JV2319
 JV2319  STATE/COUNTY-  MD/MONTGOMERY
 JV2319  COUNTRY     -  US
 JV2319  USGS QUAD   -  ROCKVILLE (2016)
 JV2319
 JV2319                         *CURRENT SURVEY CONTROL
 JV2319  ______________________________________________________________________
 JV2319* NAD 83(1993) POSITION- 39 01 59.26051(N) 077 08 27.40682(W)   ADJUSTED
 JV2319* NAVD 88 ORTHO HEIGHT -   100.468 (meters)      329.62  (feet) ADJUSTED
 JV2319  ______________________________________________________________________
 JV2319  GEOID HEIGHT    -        -31.768 (meters)                     GEOID18
 JV2319  LAPLACE CORR    -         -2.04  (seconds)                    DEFLEC18
 JV2319  DYNAMIC HEIGHT  -        100.415 (meters)      329.44  (feet) COMP
 JV2319  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 JV2319
 JV2319  HORZ ORDER      -  THIRD
 JV2319  VERT ORDER      -  SECOND    CLASS 0
 JV2319
 JV2319.The horizontal coordinates were established by classical geodetic methods
 JV2319.and adjusted by the National Geodetic Survey in November 1994.
 JV2319
 JV2319.The orthometric height was determined by differential leveling and
 JV2319.adjusted by the NATIONAL GEODETIC SURVEY
 JV2319.in June 1991.
 JV2319
 JV2319.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2319.GEOID18 height accuracy estimate available here.
 JV2319
 JV2319.Click photographs - Photos may exist for this station.
 JV2319
 JV2319.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2319
 JV2319.The dynamic height is computed by dividing the NAVD 88
 JV2319.geopotential number by the normal gravity value computed on the
 JV2319.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2319.degrees latitude (g = 980.6199 gals.).
 JV2319
 JV2319.The modeled gravity was interpolated from observed gravity values.
 JV2319
 JV2319. The following values were computed from the NAD 83(1993) position.
 JV2319
 JV2319;                    North         East     Units Scale Factor Converg.
 JV2319;SPC MD       -   151,693.178   387,796.592   MT  0.99995361   -0 05 18.5
 JV2319;SPC MD       -   497,680.03  1,272,295.99   sFT  0.99995361   -0 05 18.5
 JV2319;UTM  18      - 4,322,633.796   314,689.167   MT  1.00002286   -1 20 55.3
 JV2319
 JV2319!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2319!SPC MD       -   0.99998922  x   0.99995361  =   0.99994283
 JV2319!UTM  18      -   0.99998922  x   1.00002286  =   1.00001208
 JV2319
 JV2319:                Primary Azimuth Mark                     Grid Az
 JV2319:SPC MD       -  GEORGE                                   100 32 59.1
 JV2319:UTM  18      -  GEORGE                                   101 48 35.9
 JV2319
 JV2319_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1468922633(NAD 83)
 JV2319
 JV2319|---------------------------------------------------------------------|
 JV2319| PID    Reference Object                     Distance      Geod. Az  |
 JV2319|                                                           dddmmss.s |
 JV2319| JV2322 GEORGE                              APPROX. 1.5 KM 1002740.6 |
 JV2319| JV2320 ERMAN RM 1                           24.855 METERS 12125     |
 JV2319| JV2318 ERMAN RM 2                           23.228 METERS 28720     |
 JV2319|---------------------------------------------------------------------|
 JV2319
 JV2319                          SUPERSEDED SURVEY CONTROL
 JV2319
 JV2319  NAD 83(1991)-  39 01 59.26014(N)    077 08 27.40780(W) AD(       ) 3
 JV2319  NAD 83(1986)-  39 01 59.25990(N)    077 08 27.41753(W) AD(       ) 3
 JV2319  NAD 27      -  39 01 58.86606(N)    077 08 28.48513(W) AD(       ) 3
 JV2319  NGVD 29             100.70   (m)          330.4    (f) LEVELING    3  
 JV2319  NGVD 29 (11/26/84)  100.696  (m)          330.37   (f) ADJUSTED    2 0
 JV2319
 JV2319.Superseded values are not recommended for survey control.
 JV2319
 JV2319.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2319.See file dsdata.pdf to determine how the superseded data were derived.
 JV2319
 JV2319_MARKER: DS = TRIANGULATION STATION DISK
 JV2319_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2319_STAMPING: ERMAN 1958
 JV2319_MARK LOGO: CGS
 JV2319_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2319+STABILITY: SURFACE MOTION
 JV2319
 JV2319  HISTORY     - Date     Condition        Report By
 JV2319  HISTORY     - 1958     MONUMENTED       CGS
 JV2319  HISTORY     - 1958     GOOD             CGS
 JV2319  HISTORY     - 1978     SEE DESCRIPTION  NGS
 JV2319
 JV2319                          STATION DESCRIPTION
 JV2319
 JV2319'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2319'STATION IS LOCATED ABOUT 5 MILES SOUTH OF ROCKVILLE NEAR THE
 JV2319'INTERSECTION OF THE WASHINGTON CIRCUMFERENTIAL HIGHWAY AND THE NEW
 JV2319'U.S. HIGHWAY 240.  STATION IS 45 PACES SOUTHWEST OF THE EDGE OF
 JV2319'GRADED ROAD, 15 FEET NORTH NORTHEAST OF TRIANGLE BLAZED TREE, 4
 JV2319'FEET EAST OF WITNESS POST AND ON THE EDGE OF GRADE.  THE MARK
 JV2319'PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED ERMAN 1958.
 JV2319'
 JV2319'REFERENCE MARK NO. 1 IS 5 FEET EAST OF A SMALL TREE AND ON THE EDGE
 JV2319'OF GRADE.  THE MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED
 JV2319'ERMAN NO 1 1958.
 JV2319'
 JV2319'REFERENCE MARK NO. 2 IS 4 FEET EAST SOUTHEAST OF SMALL TREE AND ON
 JV2319'THE EDGE OF GRADE.  THE MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS
 JV2319'STAMPED ERMAN NO 2 1958.
 JV2319'
 JV2319'TO REACH STATION FROM ROCKVILLE GO SOUTHEAST ON OLD U.S. HIGHWAY
 JV2319'240, ROCKVILLE PIKE, FOR 2.6 MILES TO JUNCTION OF STATE HIGHWAY
 JV2319'187.  KEEP RIGHT ON STATE HIGHWAY 187 FOR 0.1 MILE TO CROSSROADS.
 JV2319'CONTINUE STRAIGHT AHEAD FOR 1.6 MILES TO A NEW GRADED ROAD.  TURN
 JV2319'RIGHT AND GO 0.8 MILE ON NEW GRADE TO STATION ON THE LEFT AS
 JV2319'DESCRIBED.
 JV2319'
 JV2319'STATION GEORGE CAN BE USED FOR AZIMUTH MARK.
 JV2319'
 JV2319'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV2319
 JV2319                          STATION RECOVERY (1958)
 JV2319
 JV2319'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2319'5.1 MI SE FROM ROCKVILLE.
 JV2319'ABOUT 1.0 MILE WEST ALONG STATE HIGHWAY 28 FROM THE COURTHOUSE
 JV2319'AT ROCKVILLE, THENCE 4.1 MILES SOUTHEAST ALONG U.S. HIGHWAY
 JV2319'240, ABOUT 0.5 MILE SOUTH OF A BRIDGE OVER A BRANCH OF CABIN
 JV2319'JOHN CREEK, IN THE APPROXIMATE CENTER OF A LARGE INTERCHANGE,
 JV2319'15 FEET NORTH OF AN 8-INCH BLAZED OAK TREE, 3 1/2 FEET NORTHEAST
 JV2319'OF A WHITE WOODEN WITNESS POST, SET IN THE TOP OF A CONCRETE
 JV2319'POST PROJECTING 3 INCHES ABOVE THE GROUND.  NOTE-- AT THE TIME
 JV2319'THAT THE LEVELS WERE RUN TO THIS STATION, THE CONSTRUCTION OF THE
 JV2319'INTERCHANGE WAS IN PROGRESS AND NO MEASUREMENT COULD BE MADE
 JV2319'TO ANY DEFINITE POINT OF ROAD.  STATION SHOULD BE DESCRIBED AT
 JV2319'A LATER DATE.  STATION LEVELED IN AUGUST, 1958.  NOTE-- THIS
 JV2319'STATION IS ABOUT 0.8 MILE WEST OF THE OLD GEORGETOWN ROAD
 JV2319'BRIDGE OVER THE HIGHWAY.
 JV2319
 JV2319                          STATION RECOVERY (1978)
 JV2319
 JV2319'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (RGP)
 JV2319'UNABLE TO MEASURE BETWEEN RMS.
 JV2319'
 JV2319'NO OTHER OBJECTS V.G.
 JV2319'
 JV2319'THE STATION SURFACE MARK WAS FOUND DESTROYED.  THE SUB-SURFACE MARK
 JV2319'AND BOTH REFERENCE MARKS WERE RECOVERED AND FOUND IN GOOD
 JV2319'CONDITION.  A NEW STATION SURFACE MARK WAS SET DIRECTLY OVER THE
 JV2319'THE OLD SUB-SURFACE DISK.  A SHORTER DISTANCE OF 0.18 FOOT OR 0.055
 JV2319'METER WAS NOTED TO REFERENCE MARK 2.  IT IS BELIEVED THE 1955
 JV2319'MEASUREMENT WAS A SLOPE MEASUREMENT.  A DIFFERENCE OF 2
 JV2319'MINUTES AND 46 SECONDS IN DIRECTION WAS NOTED BETWEEN THE
 JV2319'REFERENCE MARKS.
 JV2319'
 JV2319'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV2319'
 JV2319'THE STATION IS LOCATED ABOUT 5-1/2 MILES NORTHWEST OF THE CITY
 JV2319'LIMITS OF THE DISTRICT OF COLUMBIA AND IN THE MEDIAN STRIP BETWEEN
 JV2319'THE NORTH-SOUTH BOUND LANES OF INTERSTATE HIGHWAY 270.  IT IS 0.1
 JV2319'MILE EAST OF A POINT WHERE INTERSTATE HIGHWAY 270 DIVIDES AND ONE
 JV2319'PART OF IT LEADS TO INTERSTATE HIGHWAY 495 SOUTHWEST INTO
 JV2319'VIRGINIA AND THE OTHER LEADS TO THE EAST.  THE STATION IS ON THE MOST
 JV2319'EASTERLY ONE OF THE TWO HIGHWAYS.
 JV2319'
 JV2319'THE STATION SURFACE MARK IS A STANDARD DISK STAMPED ERMAN 1958
 JV2319'1978, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 JV2319'PROJECTS 4-INCHES.  THE SUB-SURFACE MARK IS A STANDARD DISK STAMPED
 JV2319'ERMAN 1958, SET IN THE TOP OF A 8-INCH MASS OF CONCRETE WHICH IS
 JV2319'3 FEET BELOW THE SURFACE.  THEY ARE 130 FEET SOUTHWEST OF THE
 JV2319'SOUTHWEST EDGE OF THE WEST BOUND LANE OF INTERSTATE HIGHWAY 270,
 JV2319'115 FEET NORTHEAST OF THE NORTHEAST EDGE OF THE EAST BOUND
 JV2319'LANE, 15 FEET NORTHEAST OF A TRIANGULAR BLAZED TREE 4 FEET
 JV2319'SOUTHEAST OF A 6-INCH PINE TREE AND 2.4 FEET NORTHEAST OF A
 JV2319'WITNESS POST.
 JV2319'
 JV2319'REFERENCE MARK 1 IS A STANDARD DISK STAMPED ERMAN NO 1 1958, SET IN
 JV2319'THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV2319'2-INCHES.  IT IS 132 FEET SOUTHWEST OF THE SOUTHWEST EDGE OF THE
 JV2319'WEST BOUND LANE OF THE HIGHWAY AND 81.5 FEET SOUTHEAST OF THE
 JV2319'WITNESS POST.
 JV2319'
 JV2319'REFERENCE MARK 2 IS A STANDARD DISK STAMPED ERMAN NO 2 1958, SET IN
 JV2319'THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV2319'3-INCHES.  IT IS 146 FEET SOUTHWEST OF THE SOUTHWEST EDGE OF THE
 JV2319'HIGHWAY, 75.8 FEET NORTHWEST OF THE WITNESS POST AND 5 FEET
 JV2319'SOUTHEAST OF A 24-INCH TULIP POPLAR TREE.
 JV2319'
 JV2319'DUE TO LARGE TREES AND THE LACK OF PERMISSION TO CUT THEM, STATION
 JV2319'GEORGE (AZ MK) WAS NOT INTERSECTED AT THIS DATE.
 JV2319'
 JV2319'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES SOUTH
 JV2319'OF ROCKVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2320 ***********************************************************************
 JV2320  DESIGNATION -  ERMAN RM 1
 JV2320  PID         -  JV2320
 JV2320  STATE/COUNTY-  MD/MONTGOMERY
 JV2320  COUNTRY     -  US
 JV2320  USGS QUAD   -  ROCKVILLE (2016)
 JV2320
 JV2320                         *CURRENT SURVEY CONTROL
 JV2320  ______________________________________________________________________
 JV2320* NAD 83(1986) POSITION- 39 01 58.84   (N) 077 08 26.52   (W)   HD_HELD1
 JV2320* NAVD 88 ORTHO HEIGHT -   101.058 (meters)      331.55  (feet) ADJUSTED
 JV2320  ______________________________________________________________________
 JV2320  GEOID HEIGHT    -        -31.768 (meters)                     GEOID18
 JV2320  DYNAMIC HEIGHT  -        101.005 (meters)      331.38  (feet) COMP
 JV2320  MODELED GRAVITY -    980,098.0   (mgal)                       NAVD 88
 JV2320
 JV2320  VERT ORDER      -  SECOND    CLASS 0
 JV2320
 JV2320.The horizontal coordinates were determined by differentially corrected
 JV2320.hand held GPS observations or other comparable positioning techniques
 JV2320.and have an estimated accuracy of +/- 3 meters.
 JV2320
 JV2320.The orthometric height was determined by differential leveling and
 JV2320.adjusted by the NATIONAL GEODETIC SURVEY
 JV2320.in June 1991.
 JV2320
 JV2320.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2320.GEOID18 height accuracy estimate available here.
 JV2320
 JV2320.Click photographs - Photos may exist for this station.
 JV2320
 JV2320.The dynamic height is computed by dividing the NAVD 88
 JV2320.geopotential number by the normal gravity value computed on the
 JV2320.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2320.degrees latitude (g = 980.6199 gals.).
 JV2320
 JV2320.The modeled gravity was interpolated from observed gravity values.
 JV2320
 JV2320;                    North         East    Units  Estimated Accuracy
 JV2320;SPC MD       -   151,680.2     387,817.9     MT  (+/- 3 meters HH1 GPS) 
 JV2320
 JV2320_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1471022620(NAD 83)
 JV2320
 JV2320                          SUPERSEDED SURVEY CONTROL
 JV2320
 JV2320  NGVD 29 (11/26/84)  101.286  (m)          332.30   (f) ADJUSTED    2 0
 JV2320
 JV2320.Superseded values are not recommended for survey control.
 JV2320
 JV2320.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2320.See file dsdata.pdf to determine how the superseded data were derived.
 JV2320
 JV2320_MARKER: DR = REFERENCE MARK DISK
 JV2320_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2320_STAMPING: ERMAN NO 1 1958
 JV2320_MARK LOGO: CGS
 JV2320_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2320+STABILITY: SURFACE MOTION
 JV2320
 JV2320  HISTORY     - Date     Condition        Report By
 JV2320  HISTORY     - 1958     MONUMENTED       CGS
 JV2320
 JV2320                          STATION DESCRIPTION
 JV2320
 JV2320'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2320'5.1 MI SE FROM ROCKVILLE.
 JV2320'ABOUT 1.0 MILE WEST ALONG STATE HIGHWAY 28 FROM THE COURTHOUSE
 JV2320'AT ROCKVILLE, THENCE 4.1 MILES SOUTHEAST ALONG U.S. HIGHWAY 240,
 JV2320'ABOUT 0.5 MILE SOUTH OF A BRIDGE OVER A BRANCH OF CABIN JOHN CREEK,
 JV2320'AT A LARGE INTERCHANGE (UNDER CONSTRUCTION IN AUGUST 1958), 81.6
 JV2320'FEET SOUTHEAST OF THE STATION, SET IN THE TOP OF A CONCRETE
 JV2320'POST PROJECTING 3 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2318 ***********************************************************************
 JV2318  DESIGNATION -  ERMAN RM 2
 JV2318  PID         -  JV2318
 JV2318  STATE/COUNTY-  MD/MONTGOMERY
 JV2318  COUNTRY     -  US
 JV2318  USGS QUAD   -  ROCKVILLE (2016)
 JV2318
 JV2318                         *CURRENT SURVEY CONTROL
 JV2318  ______________________________________________________________________
 JV2318* NAD 83(1986) POSITION- 39 01 59.48   (N) 077 08 28.33   (W)   HD_HELD1
 JV2318* NAVD 88 ORTHO HEIGHT -    98.976 (meters)      324.72  (feet) ADJUSTED
 JV2318  ______________________________________________________________________
 JV2318  GEOID HEIGHT    -        -31.767 (meters)                     GEOID18
 JV2318  DYNAMIC HEIGHT  -         98.924 (meters)      324.55  (feet) COMP
 JV2318  MODELED GRAVITY -    980,098.0   (mgal)                       NAVD 88
 JV2318
 JV2318  VERT ORDER      -  SECOND    CLASS 0
 JV2318
 JV2318.The horizontal coordinates were determined by differentially corrected
 JV2318.hand held GPS observations or other comparable positioning techniques
 JV2318.and have an estimated accuracy of +/- 3 meters.
 JV2318
 JV2318.The orthometric height was determined by differential leveling and
 JV2318.adjusted by the NATIONAL GEODETIC SURVEY
 JV2318.in June 1991.
 JV2318
 JV2318.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2318.GEOID18 height accuracy estimate available here.
 JV2318
 JV2318.Click photographs - Photos may exist for this station.
 JV2318
 JV2318.The dynamic height is computed by dividing the NAVD 88
 JV2318.geopotential number by the normal gravity value computed on the
 JV2318.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2318.degrees latitude (g = 980.6199 gals.).
 JV2318
 JV2318.The modeled gravity was interpolated from observed gravity values.
 JV2318
 JV2318;                    North         East    Units  Estimated Accuracy
 JV2318;SPC MD       -   151,700.0     387,774.4     MT  (+/- 3 meters HH1 GPS) 
 JV2318
 JV2318_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1466722641(NAD 83)
 JV2318
 JV2318                          SUPERSEDED SURVEY CONTROL
 JV2318
 JV2318  NGVD 29 (11/26/84)   99.204  (m)          325.47   (f) ADJUSTED    2 0
 JV2318
 JV2318.Superseded values are not recommended for survey control.
 JV2318
 JV2318.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2318.See file dsdata.pdf to determine how the superseded data were derived.
 JV2318
 JV2318_MARKER: DR = REFERENCE MARK DISK
 JV2318_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2318_STAMPING: ERMAN NO 2 1958
 JV2318_MARK LOGO: CGS
 JV2318_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2318+STABILITY: SURFACE MOTION
 JV2318
 JV2318  HISTORY     - Date     Condition        Report By
 JV2318  HISTORY     - 1958     MONUMENTED       CGS
 JV2318
 JV2318                          STATION DESCRIPTION
 JV2318
 JV2318'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2318'5.1 MI SE FROM ROCKVILLE.
 JV2318'ABOUT 1.0 MILE WEST ALONG STATE HIGHWAY 28 FROM THE COURTHOUSE
 JV2318'AT ROCKVILLE, THENCE 4.1 MILES SOUTHEAST ALONG U.S. HIGHWAY 240,
 JV2318'ABOUT 0.5 MILE SOUTH OF A BRIDGE OVER A BRANCH OF CABIN JOHN
 JV2318'CREEK, AT A LARGE INTERCHANGE, (UNDER CONSTRUCTION IN 1958), 76.5
 JV2318'FEET NORTHWEST OF THE STATION, SET IN THE TOP OF A CONCRETE
 JV2318'POST PROJECTING 3 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0159 ***********************************************************************
 JV0159  DESIGNATION -  ERN
 JV0159  PID         -  JV0159
 JV0159  STATE/COUNTY-  MD/CECIL
 JV0159  COUNTRY     -  US
 JV0159  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0159
 JV0159                         *CURRENT SURVEY CONTROL
 JV0159  ______________________________________________________________________
 JV0159* NAD 83(1991) POSITION- 39 35 52.60927(N) 076 03 22.18557(W)   ADJUSTED
 JV0159* NAVD 88 ORTHO HEIGHT -   110.630 (meters)      362.96  (feet) ADJUSTED
 JV0159  ______________________________________________________________________
 JV0159  GEOID HEIGHT    -        -33.082 (meters)                     GEOID18
 JV0159  LAPLACE CORR    -         -2.15  (seconds)                    DEFLEC18
 JV0159  DYNAMIC HEIGHT  -        110.575 (meters)      362.78  (feet) COMP
 JV0159  MODELED GRAVITY -    980,127.0   (mgal)                       NAVD 88
 JV0159
 JV0159  HORZ ORDER      -  SECOND
 JV0159  VERT ORDER      -  SECOND    CLASS 0
 JV0159
 JV0159.The horizontal coordinates were established by classical geodetic methods
 JV0159.and adjusted by the National Geodetic Survey in January 1992.
 JV0159
 JV0159.The orthometric height was determined by differential leveling and
 JV0159.adjusted by the NATIONAL GEODETIC SURVEY
 JV0159.in June 1991.
 JV0159
 JV0159.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0159.GEOID18 height accuracy estimate available here.
 JV0159
 JV0159.Click photographs - Photos may exist for this station.
 JV0159
 JV0159.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0159
 JV0159.The dynamic height is computed by dividing the NAVD 88
 JV0159.geopotential number by the normal gravity value computed on the
 JV0159.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0159.degrees latitude (g = 980.6199 gals.).
 JV0159
 JV0159.The modeled gravity was interpolated from observed gravity values.
 JV0159
 JV0159. The following values were computed from the NAD 83(1991) position.
 JV0159
 JV0159;                    North         East     Units Scale Factor Converg.
 JV0159;SPC MD       -   214,808.875   481,069.538   MT  1.00002923   +0 35 32.6
 JV0159;SPC MD       -   704,752.12  1,578,308.98   sFT  1.00002923   +0 35 32.6
 JV0159;UTM  18      - 4,383,667.582   409,318.790   MT  0.99970124   -0 40 23.7
 JV0159
 JV0159!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0159!SPC MD       -   0.99998783  x   1.00002923  =   1.00001706
 JV0159!UTM  18      -   0.99998783  x   0.99970124  =   0.99968908
 JV0159
 JV0159:                Primary Azimuth Mark                     Grid Az
 JV0159:SPC MD       -  PERRY POINT VET HOSP NW TANK             191 59 58.2
 JV0159:UTM  18      -  PERRY POINT VET HOSP NW TANK             193 15 54.5
 JV0159
 JV0159_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0931883667(NAD 83)
 JV0159
 JV0159|---------------------------------------------------------------------|
 JV0159| PID    Reference Object                     Distance      Geod. Az  |
 JV0159|                                                           dddmmss.s |
 JV0159| JV0160 ERN RM 1                              7.648 METERS 06335     |
 JV0159| JV4778 PERRY POINT VET HOSP NE STACK       APPROX. 5.2 KM 1900812.3 |
 JV0159| JV4777 PERRY POINT VET HOSP SW STACK       APPROX. 5.2 KM 1901631.4 |
 JV0159| JV4787 PERRY POINT VET HOSP NW TANK        APPROX. 4.9 KM 1923530.8 |
 JV0159| JV0158 ERN RM 2                              8.910 METERS 22738     |
 JV0159|---------------------------------------------------------------------|
 JV0159
 JV0159                          SUPERSEDED SURVEY CONTROL
 JV0159
 JV0159  NAD 83(1986)-  39 35 52.60300(N)    076 03 22.19066(W) AD(       ) 2
 JV0159  NAD 27      -  39 35 52.21220(N)    076 03 23.38030(W) AD(       ) 2
 JV0159  NGVD 29             110.92   (m)          363.9    (f) LEVELING    3  
 JV0159  NGVD 29 (11/26/84)  110.911  (m)          363.88   (f) ADJUSTED    2 0
 JV0159
 JV0159.Superseded values are not recommended for survey control.
 JV0159
 JV0159.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0159.See file dsdata.pdf to determine how the superseded data were derived.
 JV0159
 JV0159_MARKER: DE = TRAVERSE STATION DISK
 JV0159_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0159_STAMPING: ERN 1958
 JV0159_MARK LOGO: CGS
 JV0159_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0159+STABILITY: SURFACE MOTION
 JV0159
 JV0159  HISTORY     - Date     Condition        Report By
 JV0159  HISTORY     - 1958     MONUMENTED       CGS
 JV0159  HISTORY     - 1964     GOOD             CGS
 JV0159  HISTORY     - 1964     GOOD             CGS
 JV0159  HISTORY     - 19901116 GOOD             USPSQD
 JV0159  HISTORY     - 20040325 MARK NOT FOUND   USPSQD
 JV0159
 JV0159                          STATION DESCRIPTION
 JV0159
 JV0159'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0159'STATION IS LOCATED ABOUT 4.0 MILES NORTHEAST OF HAVRE DE GRACE
 JV0159'AND ABOUT 6.0 MILES WEST OF NORTH EAST.  STATION IS 14 FEET
 JV0159'SOUTHEAST OF APPROXIMATE CENTERLINE OF ROAD, 9 FEET EAST OF A
 JV0159'WILD CHERRY TREE AND 2 FEET NORTHWEST OF WITNESS POST.  THE MARK
 JV0159'IS A STANDARD TRAVERSE DISK SET IN A 12X12 INCH CONCRETE
 JV0159'MONUMENT, PROJECTS 4 INCHES AND THE DISK IS STAMPED ERN 1958.
 JV0159'
 JV0159'REFERENCE MARK NO. 1 IS 7-1/2 FEET SOUTHEAST OF AN OAK TREE AND
 JV0159'21 FEET SOUTHEAST OF APPROXIMATE CENTERLINE OF ROAD.  THE MARK IS
 JV0159'A STANDARD REFERENCE MARK DISK SET IN A 12X12 INCH CONCRETE
 JV0159'MONUMENT, PROJECTS 2 INCHES AND THE DISK IS STAMPED ERN NO 1 1958.
 JV0159'
 JV0159'REFERENCE MARK NO. 2 IS 13 FEET SOUTHEAST OF APPROXIMATE
 JV0159'CENTERLINE OF ROAD, 7 FEET SOUTHWEST OF A WILD CHERRY TREE AND
 JV0159'3-1/2 FEET EAST-SOUTHEAST OF A WILD CHERRY TREE.  THE MARK IS A
 JV0159'STANDARD REFERENCE MARK DISK SET IN A 12X12 INCH CONCRETE
 JV0159'MONUMENT, PROJECTS 2 INCHES AND THE DISK IS STAMPED ERN NO 2
 JV0159'1958.
 JV0159'
 JV0159'NO SUITABLE PLACE WAS FOUND TO SET AN AZIMUTH MARK, BUT
 JV0159'PERRYVILLE VET. HOSP. TANK IS VISIBLE FROM GROUND AND MAY BE
 JV0159'USED AS AZIMUTH MARK.
 JV0159'
 JV0159'TO REACH FROM THE JUNCTION OF U.S. HIGHWAYS NO. 40 AND 222 WHICH
 JV0159'IS ABOUT 1/2 MILE EAST OF THE NORTHEAST END OF SUSQUEHANNA RIVER
 JV0159'BRIDGE, GO NORTHERLY ON U.S. HIGHWAY NO. 222 FOR 1.9 MILES TO SIDE
 JV0159'ROAD RIGHT.  TURN RIGHT AND GO EASTERLY ON GRAVELED ROAD FOR 0.1
 JV0159'MILE TO FORKS.  TAKE LEFT FORK AND GO NORTHEASTERLY ON GRAVELED
 JV0159'ROAD FOR 0.25 MILE TO TOP OF HILL AT CURVE IN ROAD AND STATION
 JV0159'ON RIGHT (SOUTHEAST) SIDE OF ROAD AS DESCRIBED.
 JV0159'
 JV0159'THIS STATION WAS CONNECTED TO TRIANGULATION STATION CRAIG BY
 JV0159'TELLUROMETER TRAVERSE.
 JV0159'
 JV0159'NOTE--THE STACKS AND WATER TANK LISTED ABOVE ARE LOCATED AT
 JV0159'PERRY POINT VETERANS HOSPITAL.
 JV0159'
 JV0159'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV0159
 JV0159                          STATION RECOVERY (1964)
 JV0159
 JV0159'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (CFO)
 JV0159'THE STATION MARK AND THE TWO REFERENCE MARKS WERE RECOVERED AND
 JV0159'FOUND TO BE IN GOOD CONDITION.
 JV0159'
 JV0159'DUE TO THE CONSTRUCTION OF THE NORTHEAST EXPRESSWAY A NEW
 JV0159'DESCRIPTION IS AS FOLLOWS--
 JV0159'
 JV0159'STATION IS LOCATED ABOUT 3.0 MILE NORTH-NORTHEAST OF PERRYVILLE,
 JV0159'AND 6.0 MILES WEST OF NORTH EAST, ON THE SOUTHWEST END OF A RIDGE
 JV0159'EXTENDING TO THE NORTHEAST.  STATION MARK IS 159 FEET SOUTHWEST
 JV0159'OF THE TURN IN THE ABANDONED ROAD, 54 FEET NORTH OF THE
 JV0159'EXPRESSWAY RIGHT-OF-WAY MARKER POST, 14 FEET SOUTHEAST OF THE
 JV0159'CENTER OF THE ABANDONED ROAD, 9 FEET WEST OF A WILD CHERRY TREE
 JV0159'AND 1 FOOT NORTHWEST OF A METAL WITNESS POST.  A STANDARD DISK,
 JV0159'TRAVERSE, IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT
 JV0159'PROJECTING 4 INCHES AND ON BANK ABOUT 3 FEET ABOVE THE ROAD.
 JV0159'THE DISK IS STAMPED ERN 1958.
 JV0159'
 JV0159'REFERENCE MARK NO.1 IS 132 FEET SOUTHWEST OF THE TURN IN THE
 JV0159'ABANDONED ROAD, 59 FEET NORTH OF THE EXPRESSWAY FENCE AND 21 FEET
 JV0159'SOUTHEAST OF CENTER OF THE ABANDONED ROAD.  A STANDARD REFERENCE
 JV0159'MARK DISK IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT
 JV0159'PROJECTING 3 INCHES.  THE DISK IS STAMPED, ERN NO 1 1958.
 JV0159'
 JV0159'REFERENCE MARK NO.2 IS 187 FEET SOUTHWEST OF THE TURN IN THE
 JV0159'ABANDONED ROAD, 42 FEET NORTHWEST OF THE EXPRESSWAY RIGHT-OF-WAY
 JV0159'POST, 13 FEET SOUTHEAST OF CENTER OF THE ABANDONED ROAD AND ABOUT
 JV0159'2 FEET ABOVE THE ROAD.  A STANDARD REFERENCE MARK DISK IN THE TOP
 JV0159'OF A 12-INCH SQUARE CONCRETE MONUMENT PROJECTING 4 INCHES.
 JV0159'STAMPED, ERN NO 2 1958.
 JV0159'
 JV0159'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV0159'U.S. HIGHWAY 222 AT PERRYVILLE, GO NORTH ON HIGHWAY 222 FOR 1.3
 JV0159'MILES, TAKE THE RIGHT FORK, OLD HIGHWAY AND CONTINUE 0.65 MILE
 JV0159'TO A FORK JUST NORTH OF THE EXPRESSWAY BRIDGE, KEEP THE RIGHT
 JV0159'FORK AND GO 0.15 MILE TO A SIDE ROAD RIGHT, TURN RIGHT, GO EAST
 JV0159'UP THE HILL FOR 0.3 MILE TO A SIDE ROAD RIGHT, TURN RIGHT, GO
 JV0159'SOUTHERLY ON THE OLD ABANDONED ROAD FOR 0.15 MILE TO THE
 JV0159'STATION AS ABOVE.
 JV0159
 JV0159                          STATION RECOVERY (1964)
 JV0159
 JV0159'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JV0159'2.6 MI NE FROM PERRYVILLE.
 JV0159'ABOUT 1.3 MILE NORTH ALONG U.S. HIGHWAY 222 FROM THE INTERSECTION
 JV0159'OF U.S. HIGHWAY 40 AT PERRYVILLE, THENCE 0.65 MILE NORTHEAST
 JV0159'ALONG THE OLD HIGHWAY, THENCE 0.15 MILE NORTH ALONG A MACADAM
 JV0159'ROAD, THENCE 0.3 MILE EAST ALONG THE MACADAM ROAD UP THE HILL,
 JV0159'THENCE 0.15 MILE SOUTH ALONG THE ABANDONED SAND ROAD.  159 FEET
 JV0159'SOUTHWEST OF TURN IN THE ROAD, 54 FEET NORTH OF THE HIGHWAY
 JV0159'RIGHT-OF-WAY POST, 14 FEET SOUTHEAST OF CENTER OF THE ABANDONED
 JV0159'ROAD AND 1 FOOT NORTHWEST OF A METAL WITNESS POST AND 3 FEET ABOVE
 JV0159'THE LEVEL OF THE ROAD.  A STANDARD TRAVERSE DISK IN THE TOP OF
 JV0159'A CONCRETE MONUMENT AND PROJECTS 3 INCHES.
 JV0159
 JV0159                          STATION RECOVERY (1990)
 JV0159
 JV0159'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0159'RECOVERED IN GOOD CONDITION.
 JV0159
 JV0159                          STATION RECOVERY (2004)
 JV0159
 JV0159'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLG)
 JV0159'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0160 ***********************************************************************
 JV0160  DESIGNATION -  ERN RM 1
 JV0160  PID         -  JV0160
 JV0160  STATE/COUNTY-  MD/CECIL
 JV0160  COUNTRY     -  US
 JV0160  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0160
 JV0160                         *CURRENT SURVEY CONTROL
 JV0160  ______________________________________________________________________
 JV0160* NAD 83(1986) POSITION- 39 35 52.72   (N) 076 03 21.90   (W)   HD_HELD1
 JV0160* NAVD 88 ORTHO HEIGHT -   111.201 (meters)      364.83  (feet) ADJUSTED
 JV0160  ______________________________________________________________________
 JV0160  GEOID HEIGHT    -        -33.082 (meters)                     GEOID18
 JV0160  DYNAMIC HEIGHT  -        111.145 (meters)      364.65  (feet) COMP
 JV0160  MODELED GRAVITY -    980,127.0   (mgal)                       NAVD 88
 JV0160
 JV0160  VERT ORDER      -  SECOND    CLASS 0
 JV0160
 JV0160.The horizontal coordinates were determined by differentially corrected
 JV0160.hand held GPS observations or other comparable positioning techniques
 JV0160.and have an estimated accuracy of +/- 3 meters.
 JV0160
 JV0160.The orthometric height was determined by differential leveling and
 JV0160.adjusted by the NATIONAL GEODETIC SURVEY
 JV0160.in June 1991.
 JV0160
 JV0160.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0160.GEOID18 height accuracy estimate available here.
 JV0160
 JV0160.Click photographs - Photos may exist for this station.
 JV0160
 JV0160.The dynamic height is computed by dividing the NAVD 88
 JV0160.geopotential number by the normal gravity value computed on the
 JV0160.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0160.degrees latitude (g = 980.6199 gals.).
 JV0160
 JV0160.The modeled gravity was interpolated from observed gravity values.
 JV0160
 JV0160;                    North         East    Units  Estimated Accuracy
 JV0160;SPC MD       -   214,812.4     481,076.3     MT  (+/- 3 meters HH1 GPS) 
 JV0160
 JV0160_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0932583670(NAD 83)
 JV0160
 JV0160                          SUPERSEDED SURVEY CONTROL
 JV0160
 JV0160  NGVD 29 (11/26/84)  111.481  (m)          365.75   (f) ADJUSTED    2 0
 JV0160
 JV0160.Superseded values are not recommended for survey control.
 JV0160
 JV0160.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0160.See file dsdata.pdf to determine how the superseded data were derived.
 JV0160
 JV0160_MARKER: DR = REFERENCE MARK DISK
 JV0160_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0160_STAMPING: ERN NO 1 1958
 JV0160_MARK LOGO: CGS
 JV0160_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0160+STABILITY: SURFACE MOTION
 JV0160
 JV0160  HISTORY     - Date     Condition        Report By
 JV0160  HISTORY     - 1958     MONUMENTED       CGS
 JV0160  HISTORY     - 1964     GOOD             CGS
 JV0160  HISTORY     - 19901116 MARK NOT FOUND   USPSQD
 JV0160
 JV0160                          STATION DESCRIPTION
 JV0160
 JV0160'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0160'2.6 MI NE FROM PERRYVILLE.
 JV0160'ABOUT 1.3 MILES NORTH ALONG U.S. HIGHWAY 222 FROM THE
 JV0160'INTERSECTION OF U.S. HIGHWAY 40 AT PERRYVILLE, THENCE 0.65 MILE
 JV0160'NORTHEAST ALONG THE OLD HIGHWAY, THENCE 0.15 MILE NORTH ALONG A
 JV0160'MACADAM ROAD, THENCE 0.3 MILE EAST UP THE HILL ALONG A MACADAM
 JV0160'ROAD, THENCE 0.15 MILE SOUTH ALONG THE OLD ABANDONED SAND ROAD.
 JV0160'132 FEET SOUTHWEST OF THE TURN IN THE ROAD, 25 FEET NORTHEAST
 JV0160'OF THE STATION MARK, AND 21 FEET SOUTHEAST OF CENTER OF THE
 JV0160'ABANDONED ROAD.  A STANDARD REFERENCE MARK DISK IN THE TOP OF A
 JV0160'CONCRETE MONUMENT AND PROJECTS 3 INCHES.  ON BANK ABOUT 4 FEET
 JV0160'ABOVE THE ROAD.
 JV0160
 JV0160                          STATION RECOVERY (1990)
 JV0160
 JV0160'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0160'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0158 ***********************************************************************
 JV0158  DESIGNATION -  ERN RM 2
 JV0158  PID         -  JV0158
 JV0158  STATE/COUNTY-  MD/CECIL
 JV0158  COUNTRY     -  US
 JV0158  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0158
 JV0158                         *CURRENT SURVEY CONTROL
 JV0158  ______________________________________________________________________
 JV0158* NAD 83(1986) POSITION- 39 35 52.42   (N) 076 03 22.46   (W)   HD_HELD1
 JV0158* NAVD 88 ORTHO HEIGHT -   109.488 (meters)      359.21  (feet) ADJUSTED
 JV0158  ______________________________________________________________________
 JV0158  GEOID HEIGHT    -        -33.082 (meters)                     GEOID18
 JV0158  DYNAMIC HEIGHT  -        109.434 (meters)      359.03  (feet) COMP
 JV0158  MODELED GRAVITY -    980,127.0   (mgal)                       NAVD 88
 JV0158
 JV0158  VERT ORDER      -  SECOND    CLASS 0
 JV0158
 JV0158.The horizontal coordinates were determined by differentially corrected
 JV0158.hand held GPS observations or other comparable positioning techniques
 JV0158.and have an estimated accuracy of +/- 3 meters.
 JV0158
 JV0158.The orthometric height was determined by differential leveling and
 JV0158.adjusted by the NATIONAL GEODETIC SURVEY
 JV0158.in June 1991.
 JV0158
 JV0158.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0158.GEOID18 height accuracy estimate available here.
 JV0158
 JV0158.Click photographs - Photos may exist for this station.
 JV0158
 JV0158.The dynamic height is computed by dividing the NAVD 88
 JV0158.geopotential number by the normal gravity value computed on the
 JV0158.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0158.degrees latitude (g = 980.6199 gals.).
 JV0158
 JV0158.The modeled gravity was interpolated from observed gravity values.
 JV0158
 JV0158;                    North         East    Units  Estimated Accuracy
 JV0158;SPC MD       -   214,803.0     481,063.0     MT  (+/- 3 meters HH1 GPS) 
 JV0158
 JV0158_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0931283661(NAD 83)
 JV0158
 JV0158                          SUPERSEDED SURVEY CONTROL
 JV0158
 JV0158  NGVD 29 (11/26/84)  109.769  (m)          360.13   (f) ADJUSTED    2 0
 JV0158
 JV0158.Superseded values are not recommended for survey control.
 JV0158
 JV0158.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0158.See file dsdata.pdf to determine how the superseded data were derived.
 JV0158
 JV0158_MARKER: DR = REFERENCE MARK DISK
 JV0158_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0158_STAMPING: ERN NO 2 1958
 JV0158_MARK LOGO: CGS
 JV0158_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0158+STABILITY: SURFACE MOTION
 JV0158
 JV0158  HISTORY     - Date     Condition        Report By
 JV0158  HISTORY     - 1958     MONUMENTED       CGS
 JV0158  HISTORY     - 1964     GOOD             CGS
 JV0158  HISTORY     - 19901116 MARK NOT FOUND   USPSQD
 JV0158
 JV0158                          STATION DESCRIPTION
 JV0158
 JV0158'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0158'2.6 MI NE FROM PERRYVILLE.
 JV0158'ABOUT 1.3 MILE NORTHEAST ALONG U.S. HIGHWAY 222 FROM THE
 JV0158'INTERSECTION OF U.S. HIGHWAY 40 AT PERRYVILLE, THENCE 0.65 MILE
 JV0158'NORTHEASTERLY ALONG THE OLD HIGHWAY, THENCE 0.15 MILE NORTH
 JV0158'ALONG A MACADAM ROAD, THENCE 0.3 MILE EAST ALONG THE MACADAM
 JV0158'ROAD UP THE HILL, THENCE 0.15 MILE SOUTH ALONG THE OLD ABANDONED
 JV0158'ROAD.  29 FEET SOUTHWEST OF THE STATION MARK, 42 FEET NORTHWEST
 JV0158'OF A HIGHWAY RIGHT-OF-WAY POST, 13 FEET SOUTHEAST OF THE
 JV0158'ABANDONED ROAD AND 187 FEET SOUTHWEST OF THE TURN IN THE ROAD.
 JV0158'A STANDARD REFERENCE MARK DISK IN THE TOP OF A CONCRETE MONUMENT,
 JV0158'PROJECTS 4 INCHES.
 JV0158
 JV0158                          STATION RECOVERY (1990)
 JV0158
 JV0158'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0158'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI2469 ***********************************************************************
 AI2469  SACS        -  This is a Secondary Airport Control Station.
 AI2469  DESIGNATION -  ESN A
 AI2469  PID         -  AI2469
 AI2469  STATE/COUNTY-  MD/TALBOT
 AI2469  COUNTRY     -  US
 AI2469  USGS QUAD   -  EASTON (2016)
 AI2469
 AI2469                         *CURRENT SURVEY CONTROL
 AI2469  ______________________________________________________________________
 AI2469* NAD 83(2011) POSITION- 38 47 53.09942(N) 076 04 21.91074(W)   ADJUSTED
 AI2469* NAD 83(2011) ELLIP HT-   -25.481 (meters)        (06/27/12)   ADJUSTED
 AI2469* NAD 83(2011) EPOCH   -  2010.00
 AI2469* NAVD 88 ORTHO HEIGHT -     9.15  (meters)       30.0   (feet) GPS OBS
 AI2469  ______________________________________________________________________
 AI2469  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AI2469  GEOID HEIGHT    -        -34.615 (meters)                     GEOID96
 AI2469  GEOID HEIGHT    -        -34.624 (meters)                     GEOID18
 AI2469  NAD 83(2011) X  -  1,198,004.591 (meters)                     COMP
 AI2469  NAD 83(2011) Y  - -4,831,058.830 (meters)                     COMP
 AI2469  NAD 83(2011) Z  -  3,974,856.117 (meters)                     COMP
 AI2469  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 AI2469
 AI2469  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI2469  Standards:
 AI2469         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI2469            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI2469  -------------------------------------------------------------------
 AI2469  NETWORK    0.33   0.67           0.15   0.12   0.34     -0.05815051
 AI2469  -------------------------------------------------------------------
 AI2469  Click here for local accuracies and other accuracy information.
 AI2469
 AI2469.This mark is at Easton/newnam Field Airport (ESN)
 AI2469
 AI2469.The horizontal coordinates were established by GPS observations
 AI2469.and adjusted by the National Geodetic Survey in June 2012.
 AI2469
 AI2469.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI2469.been affixed to the stable North American tectonic plate. See 
 AI2469.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI2469
 AI2469.The horizontal coordinates are valid at the epoch date displayed above
 AI2469.which is a decimal equivalence of Year/Month/Day.
 AI2469
 AI2469.The orthometric height was determined by GPS observations and a
 AI2469.high-resolution geoid model.
 AI2469
 AI2469.GPS derived orthometric heights for airport stations designated as
 AI2469.PACS or SACS are published to 2 decimal places.  This maintains
 AI2469.centimeter relative accuracy between the PACS and SACS.  It does
 AI2469.not indicate centimeter accuracy relative to other marks which are
 AI2469.part of the published vertical control network.
 AI2469
 AI2469.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI2469.GEOID18 height accuracy estimate available here.
 AI2469
 AI2469.Click photographs - Photos may exist for this station.
 AI2469
 AI2469.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI2469
 AI2469.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI2469
 AI2469.The ellipsoidal height was determined by GPS observations
 AI2469.and is referenced to NAD 83.
 AI2469
 AI2469. The following values were computed from the NAD 83(2011) position.
 AI2469
 AI2469;                    North         East     Units Scale Factor Converg.
 AI2469;SPC MD       -   126,000.886   480,546.520   MT  0.99995076   +0 34 55.1
 AI2469;SPC MD       -   413,387.91  1,576,593.04   sFT  0.99995076   +0 34 55.1
 AI2469;UTM  18      - 4,294,916.509   406,843.819   MT  0.99970686   -0 40 20.0
 AI2469
 AI2469!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI2469!SPC MD       -   1.00000400  x   0.99995076  =   0.99995476
 AI2469!UTM  18      -   1.00000400  x   0.99970686  =   0.99971086
 AI2469
 AI2469_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0684394916(NAD 83)
 AI2469
 AI2469                          SUPERSEDED SURVEY CONTROL
 AI2469
 AI2469  NAD 83(2007)-  38 47 53.09966(N)    076 04 21.91148(W) AD(2002.00) 0
 AI2469  ELLIP H (02/10/07)  -25.448  (m)                       GP(2002.00)    
 AI2469  ELLIP H (01/21/03)  -25.446  (m)                       GP(       ) 4 1
 AI2469  NAD 83(1991)-  38 47 53.09982(N)    076 04 21.91221(W) AD(       ) 1
 AI2469  ELLIP H (11/10/99)  -25.444  (m)                       GP(       ) 4 1
 AI2469
 AI2469.Superseded values are not recommended for survey control.
 AI2469
 AI2469.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI2469.See file dsdata.pdf to determine how the superseded data were derived.
 AI2469
 AI2469_MARKER: DW = HYDROGRAPHIC STATION DISK
 AI2469_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 AI2469_SP_SET: CONCRETE DRAIN
 AI2469_STAMPING: ESN A 1999
 AI2469_MARK LOGO: NOS
 AI2469_MAGNETIC: N = NO MAGNETIC MATERIAL
 AI2469_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI2469+STABILITY: SURFACE MOTION
 AI2469_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI2469+SATELLITE: SATELLITE OBSERVATIONS - 1999
 AI2469
 AI2469  HISTORY     - Date     Condition        Report By
 AI2469  HISTORY     - 1999     MONUMENTED       NGS
 AI2469
 AI2469                          STATION DESCRIPTION
 AI2469
 AI2469'DESCRIBED BY NATIONAL GEODETIC SURVEY 1999 (AJL)
 AI2469'THE STATION IS LOCATED ABOUT 11.3 MI (18.2 KM) WEST-SOUTHWEST OF
 AI2469'MATHEWS, 3.6 MI (5.8 KM) SOUTH OF LONGWOODS, 2.1 MI (3.4 KM) NORTH OF
 AI2469'EASTON, AT THE EASTON/NEWNAM FIELD AIRPORT, NEAR RUNWAY END 4.
 AI2469'OWNERSHIP--COUNTY OF TALBOT AND TOWN OF EASTON.  AIRPORT MANAGER IS
 AI2469'JOE MARSH.  29137 NEWNAM RD, UNIT 1 EASTON MD 21601.  PHONE
 AI2469'410-770-8055.  TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY
 AI2469'50 AND STATE HIGHWAY 331 EAST AT THE EAST EDGE OF EASTON , GO NORTH
 AI2469'4.5 KM (2.80 MI) ON U.S.  HIGHWAY 50 TO A ROAD LEFT.  TURN LEFT AND GO
 AI2469'SOUTHWEST FOR 0.6 KM (0.35 MI) ON AIRPORT ROAD TO A PAVED DRIVE LEFT.
 AI2469'TURN LEFT AND GO SOUTHEAST 0.2 KM (0.10 MI) ON THE PAVED DRIVE TO THE
 AI2469'AIRPORT ADMINISTRATION BUILDING ON THE LEFT.  PASS THE BUILDING, TURN
 AI2469'RIGHT AND GO THRU GATE ONTO RAMP.  CONTINUE STRAIGHT AHEAD AND GO
 AI2469'SOUTHWEST ON TAXI FOR 0.25 MI (0.40 KM) TO RUNWAY 15/33.  CROSS RUNWAY
 AI2469'AND CONTINUE SOUTHWEST ON TAXIWAY FOR 0.25 MI (0.40 KM) TO THE END OF
 AI2469'TAXIWAY AND STATION ON THE LEFT, IN THE EAST CORNER OF A CONCRETE
 AI2469'DRAIN.  LOCATED 83.5 FT (25.5 M) NORTH-NORTHWEST FROM THE NORTH CORNER
 AI2469'OF A LIGHTED RUNWAY 4 SIGN, 78.0 FT (23.8 M) NORTHEAST FROM CENTERLINE
 AI2469'OF TAXI, 79.0 FT (24.1 M) SOUTHEAST FROM CENTERLINE OF EAST-WEST
 AI2469'TAXIWAY, 25.0 FT (7.6 M) SOUTHWEST FROM 6 FT (1.8 M) X 6 FT (1.8 M)
 AI2469'CONCRETE DRAIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7454 ***********************************************************************
 HV7454  DESIGNATION -  ESSEX
 HV7454  PID         -  HV7454
 HV7454  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7454  COUNTRY     -  US
 HV7454  USGS QUAD   -  LANHAM (2016)
 HV7454
 HV7454                         *CURRENT SURVEY CONTROL
 HV7454  ______________________________________________________________________
 HV7454* NAD 83(1991) POSITION- 38 57 26.07424(N) 076 51 57.84252(W)   ADJUSTED
 HV7454* NAVD 88 ORTHO HEIGHT -    58.    (meters)      190.    (feet) SCALED
 HV7454  ______________________________________________________________________
 HV7454  GEOID HEIGHT    -        -32.350 (meters)                     GEOID18
 HV7454  LAPLACE CORR    -         -5.17  (seconds)                    DEFLEC18
 HV7454  HORZ ORDER      -  SECOND
 HV7454
 HV7454.The horizontal coordinates were established by classical geodetic methods
 HV7454.and adjusted by the National Geodetic Survey in January 1992.
 HV7454
 HV7454.The orthometric height was scaled from a topographic map.
 HV7454
 HV7454.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7454.GEOID18 height accuracy estimate available here.
 HV7454
 HV7454.Click photographs - Photos may exist for this station.
 HV7454
 HV7454.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7454
 HV7454. The following values were computed from the NAD 83(1991) position.
 HV7454
 HV7454;                    North         East     Units Scale Factor Converg.
 HV7454;SPC MD       -   143,268.265   411,608.507   MT  0.99995085   +0 05 02.6
 HV7454;SPC MD       -   470,039.30  1,350,418.91   sFT  0.99995085   +0 05 02.6
 HV7454;UTM  18      - 4,313,687.612   338,310.697   MT  0.99992193   -1 10 24.7
 HV7454
 HV7454!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7454!SPC MD       -   0.99999601  x   0.99995085  =   0.99994686
 HV7454!UTM  18      -   0.99999601  x   0.99992193  =   0.99991794
 HV7454
 HV7454:                Primary Azimuth Mark                     Grid Az
 HV7454:SPC MD       -  CARR                                     344 32 43.9
 HV7454:UTM  18      -  CARR                                     345 48 11.2
 HV7454
 HV7454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3831013687(NAD 83)
 HV7454
 HV7454|---------------------------------------------------------------------|
 HV7454| PID    Reference Object                     Distance      Geod. Az  |
 HV7454|                                                           dddmmss.s |
 HV7454| CX2743 ESSEX RM 1                           29.492 METERS 00933     |
 HV7454| CX2745 ESSEX RM 3                           38.983 METERS 08535     |
 HV7454| CX2744 ESSEX RM 2                           21.290 METERS 10030     |
 HV7454| HV7456 CARR                                APPROX. 0.7 KM 3443746.5 |
 HV7454|---------------------------------------------------------------------|
 HV7454
 HV7454                          SUPERSEDED SURVEY CONTROL
 HV7454
 HV7454  NAD 83(1986)-  38 57 26.07255(N)    076 51 57.85383(W) AD(       ) 2
 HV7454  NAD 27      -  38 57 25.67331(N)    076 51 58.95291(W) AD(       ) 2
 HV7454
 HV7454.Superseded values are not recommended for survey control.
 HV7454
 HV7454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7454.See file dsdata.pdf to determine how the superseded data were derived.
 HV7454
 HV7454_MARKER: DS = TRIANGULATION STATION DISK
 HV7454_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV7454_STAMPING: ESSEX 1958
 HV7454_MARK LOGO: CGS
 HV7454_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7454
 HV7454  HISTORY     - Date     Condition        Report By
 HV7454  HISTORY     - 1958     MONUMENTED       CGS
 HV7454  HISTORY     - 1968     MARK NOT FOUND   CGS
 HV7454  HISTORY     - 1974     SEE DESCRIPTION  NGS
 HV7454
 HV7454                          STATION DESCRIPTION
 HV7454
 HV7454'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7454'STATION IS LOCATED ABOUT 9.5 MILES NORTHEAST OF THE CENTER OF
 HV7454'WASHINGTON, D.C., ABOUT 0.6 MILES SOUTHWEST OF THE INTERSECTION
 HV7454'OF U.S. HIGHWAY NO. 50 AND STATE HIGHWAY NO. 564 AND ABOUT 0.15
 HV7454'MILE SOUTH OF U.S. HIGHWAY NO. 50.  STATION IS 59 FEET WEST OF
 HV7454'WEST EDGE OF WOODS, 86 FEET EAST-SOUTHEAST OF 36 INCH TREE AND 24
 HV7454'FEET SOUTH OF THE SOUTH EDGE OF YARD.  THE MARK IS A STANDARD
 HV7454'STATION DISK WELDED ON TOP OF A 3 INCH METAL PIPE, PROJECTS
 HV7454'ABOUT 1 INCH AND THE DISK IS STAMPED ESSEX 1958.
 HV7454'
 HV7454'R.M. NO. 1 IS 7 FEET WEST OF WEST EDGE OF WOODS AREA, 22 FEET
 HV7454'SOUTH OF 12 INCH PINE TREE AND 18 FEET SOUTHWEST OF 15 INCH PINE
 HV7454'TREE.  THE MARK IS A STANDARD REFERENCE DISK WELDED ON TOP OF A
 HV7454'3 INCH METAL PIPE WHICH PROJECTS ABOUT 4 INCHES AND THE DISK IS
 HV7454'STAMPED ESSEX NO 1 1958.
 HV7454'
 HV7454'R.M. NO. 2 IS 11 FEET EAST OF THE WEST EDGE OF WOODS AREA AND
 HV7454'11 FEET NORTHWEST OF A 24 INCH TREE.  THE MARK IS A STANDARD
 HV7454'REFERENCE DISK WELDED ON TOP OF A 3 INCH METAL PIPE THAT PROJECTS
 HV7454'ABOUT 6 INCHES AND THE DISK IS STAMPED ESSEX NO 2 1958.
 HV7454'
 HV7454'TRAVERSE STATION CARR (AZIMUTH MARK) IS 20 FEET NORTH OF
 HV7454'APPROXIMATE CENTERLINE OF MADISON AVENUE, 34 FEET WEST OF THE
 HV7454'APPROXIMATE CENTERLINE OF 87TH AVENUE, 6-1/2 FEET SOUTH OF THE
 HV7454'SOUTH EDGE OF THE SIDE WALK AND 15 FEET SOUTHWEST OF THE STREET
 HV7454'MARKER POST.  THE MARK IS SET FLUSH ON THE CURB, THE DISK IS A
 HV7454'STANDARD TRAVERSE DISK STAMPED CARR 1958.
 HV7454'
 HV7454'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 50 AND STATE
 HV7454'HIGHWAY NO. 564, GO SOUTHWEST ON U.S. HIGHWAY NO. 50 FOR 0.4
 HV7454'MILE TO A GRAVELED LANE LEFT (ABOUT 0.1 MILE BEFORE REACHING
 HV7454'CARROLTON ESTATES ON RIGHT, AND JUST PAST DRIVEWAY LEADING INTO
 HV7454'YARD WITH NO. 8071 ON LARGE GATE POSTS), TURN LEFT ONTO LANE AND
 HV7454'GO UPHILL PASSING TO RIGHT OF HOUSES ON LEFT FOR 0.1 MILE TO
 HV7454'WHERE LANE TURNS RIGHT TOWARDS A LARGE WHITE HOUSE, HERE
 HV7454'CONTINUE AHEAD LEAVING ROAD AND GO SOUTH ALONG WEST EDGE OF
 HV7454'WOODS AREA FOR ABOUT 150 FEET, THEN RIGHT FOR ABOUT 70 FEET
 HV7454'AND STATION AS DESCRIBED.
 HV7454'
 HV7454'TO REACH TRAVERSE STATION CARR 1958 (AZIMUTH MARK) FROM THE
 HV7454'JUNCTION OF U.S. HIGHWAY NO. 50 AND STATE HIGHWAY NO. 564 (ABOUT
 HV7454'10 MILES NORTHEAST OF WASHINGTON, D.C.), GO SOUTHWEST ON
 HV7454'U.S. HIGHWAY NO. 50 FOR 0.5 MILE TO ENTRANCE TO THE CARROLTON
 HV7454'ESTATES ON THE RIGHT, TURN RIGHT INTO CARROLTON ESTATES AND GO
 HV7454'NORTH ON 85TH AVENUE FOR 0.25 MILE TO A T INTERSECTION AFTER
 HV7454'CROSSING DRAINAGE DITCH, TURN LEFT AND GO NORTHERLY AGAIN ON
 HV7454'WESTBROOK DRIVE FOR 0.1 MILE TO A STREET TO RIGHT, TURN RIGHT
 HV7454'AND GO EAST ON MADISON AVENUE FOR 0.1 MILE TO END OF STREET AND
 HV7454'STATION SITE ON LEFT.
 HV7454'
 HV7454'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 HV7454
 HV7454                          STATION RECOVERY (1968)
 HV7454
 HV7454'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (JCB)
 HV7454'ALTHOUGH A THOROUGH SEARCH WAS MADE NO TRACE OF THE STATION OR
 HV7454'REFERENCE MARK NUMBER 2 COULD BE FOUND.  REFERENCE MARK NO. 1
 HV7454'AND TRAVERSE STATION CARR (AZIMUTH MARK) WERE RECOVERED AND FOUND
 HV7454'TO BE IN GOOD CONDITION.  APPARENTLY THE STATION MARK AND
 HV7454'REFERENCE MARK NUMBER 2 WERE DESTROYED BY THE CONSTRUCTION OR
 HV7454'THE LANDSCAPING OF INTERSTATE HIGHWAY.  SITE IS NOW IN THE
 HV7454'SOUTHWEST ANGLE (IN CLOVERLEAF) OF JUNCTION OF INTERSTATE
 HV7454'HIGHWAY 495 AND STATE HIGHWAY 450.
 HV7454'
 HV7454'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV7454'9-1/2 MILES NORTHEAST OF WASHINGTON, D.C.
 HV7454
 HV7454                          STATION RECOVERY (1974)
 HV7454
 HV7454'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 HV7454'THE STATION MARK WAS FOUND DESTROYED.  REFERENCE MARK 2 WAS
 HV7454'NOT FOUND.  IT IS BELIEVED DESTROYED BY CONSTRUCTION.  REFERENCE
 HV7454'MARK 1 AND THE AZIMUTH MARK WERE RECOVERED AND FOUND IN GOOD
 HV7454'CONDITION.  THE STATION MARK WAS RE-ESTABLISHED FROM THE
 HV7454'DISTANCE TO REFERENCE MARK 1 AND THE ANGLE BETWEEN THE REFERENCE
 HV7454'MARK AND THE AZIMUTH MARK.  THE NEW OBSERVED DISTANCE AND
 HV7454'DIRECTION TO THE AZIMUTH MARK AND THE REFERENCE MARK WERE
 HV7454'WITHIN CLOSE AGREEMENT WITH THE 1958 OBSERVATIONS.  A NEW
 HV7454'REFERENCE MARK 3 WAS ALSO ESTABLISHED AT THIS DATE.
 HV7454'
 HV7454'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HV7454'
 HV7454'THE STATION IS LOCATED AT THE INTERSECTION OF INTERSTATE HIGHWAY
 HV7454'495 AND STATE HIGHWAY 450 WHICH IS ABOUT 10 MILES NORTHEAST OF
 HV7454'THE CENTER OF THE DISTRICT OF COLUMBIA.  THE MARK IS ON A LOW
 HV7454'HILL WHICH IS BORDERED BY INTERSTATE HIGHWAY 495 ON THE EAST,
 HV7454'STATE HIGHWAY 450 ON THE NORTH AND A EXIT RAMP FOR THE SOUTH
 HV7454'BOUND LANE OF INTERSTATE HIGHWAY 495 ON THE SOUTH AND WEST.  THE
 HV7454'SMALL HILL HAS SEVERAL LARGE TREES ON THE NORTH PART.
 HV7454'
 HV7454'THE STATION MARK IS A STANDARD DISK STAMPED ESSEX 1958 1974, SET
 HV7454'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS 1-INCH
 HV7454'BELOW THE SURFACE.  IT IS 2.5 FEET EAST OF A WITNESS POST, 95
 HV7454'FEET NORTHWEST OF A LIGHTPOLE NUMBERED 28 AND 100 FEET SOUTHWEST
 HV7454'OF THE SOUTHWEST EDGE OF THE WOODED AREA.
 HV7454'
 HV7454'REFERENCE MARK 1 IS A STANDARD DISK STAMPED ESSEX NO 1 1958,
 HV7454'WELDED TO THE TOP OF A 3-INCH IRON PIPE WHICH PROJECTS 4
 HV7454'INCHES.  IT IS 5 FEET WEST OF THE SMALL WOODED AREA, 79 FEET
 HV7454'EAST OF THE WITNESS POST AND JUST NORTH OF A SANDY AREA.
 HV7454'
 HV7454'REFERENCE MARK 3 IS A STANDARD DISK STAMPED ESSEX 1958 NO 3
 HV7454'1974, CEMENTED IN A DRILL HOLE IN THE NORTH CURB ON THE EXIT
 HV7454'RAMP FOR INTERSTATE HIGHWAY 495.  IT IS 0.5 FOOT NORTH OF THE
 HV7454'EDGE OF THE PAVEMENT, 74 FEET NORTHEAST OF THE LIGHTPOLE AND 129
 HV7454'FEET SOUTHEAST OF THE WITNESS POST.
 HV7454'
 HV7454'THE AZIMUTH MARK IS A STANDARD TRAVERSE DISK STAMPED CARR 1958,
 HV7454'CEMENTED IN A DRILL HOLE IN THE NORTHWEST PART OF THE INTERSECTION
 HV7454'OF 87TH. AVENUE AND MADISON AVENUE.  IT IS 6 FEET SOUTH OF THE
 HV7454'SIDEWALK ON THE NORTH SIDE OF MADISON AVENUE, 20 FEET NORTH OF
 HV7454'THE CENTER OF MADISON AVENUE AND 34 FEET WEST OF THE CENTER OF
 HV7454'87TH. AVENUE.
 HV7454'
 HV7454'TO REACH TRAVERSE STATION CARR 1958 FROM THIS STATION, GO WEST
 HV7454'ON STATE HIGHWAY 450 FOR 0.1 MILE TO 85TH. AVENUE.  GO NORTH AND
 HV7454'EAST ON 85TH. AVE. FOR 0.25 MILE TO WESTBROOK DRIVE JUST AFTER
 HV7454'CROSSING A SMALL CREEK.  GO NORTH ON WESTBROOK DRIVE FOR 0.1
 HV7454'MILE TO MADISON AVENUE ON THE RIGHT.  TURN RIGHT AND GO EAST ON
 HV7454'MADISON AVENUE FOR 0.1 MILE TO THE MARK ON THE LEFT.
 HV7454'
 HV7454'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV7454'10 MILES NORTHEAST OF DISTRICT OF COL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5379 ***********************************************************************
 JV5379  DESIGNATION -  ESSEX
 JV5379  PID         -  JV5379
 JV5379  STATE/COUNTY-  MD/BALTIMORE
 JV5379  COUNTRY     -  US
 JV5379  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5379
 JV5379                         *CURRENT SURVEY CONTROL
 JV5379  ______________________________________________________________________
 JV5379* NAD 83(1991) POSITION- 39 18 01.25307(N) 076 28 32.09757(W)   ADJUSTED
 JV5379* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5379  ______________________________________________________________________
 JV5379  GEOID HEIGHT    -        -32.979 (meters)                     GEOID18
 JV5379  LAPLACE CORR    -         -2.37  (seconds)                    DEFLEC18
 JV5379  HORZ ORDER      -  SECOND
 JV5379
 JV5379.The horizontal coordinates were established by classical geodetic methods
 JV5379.and adjusted by the National Geodetic Survey in January 1992.
 JV5379
 JV5379.The orthometric height was scaled from a topographic map.
 JV5379
 JV5379.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5379.GEOID18 height accuracy estimate available here.
 JV5379
 JV5379.Click photographs - Photos may exist for this station.
 JV5379
 JV5379.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5379
 JV5379. The following values were computed from the NAD 83(1991) position.
 JV5379
 JV5379;                    North         East     Units Scale Factor Converg.
 JV5379;SPC MD       -   181,479.030   445,234.426   MT  0.99997724   +0 19 44.9
 JV5379;SPC MD       -   595,402.45  1,460,739.95   sFT  0.99997724   +0 19 44.9
 JV5379;UTM  18      - 4,351,145.246   372,765.849   MT  0.99979932   -0 56 05.1
 JV5379
 JV5379!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5379!SPC MD       -   1.00000506  x   0.99997724  =   0.99998230
 JV5379!UTM  18      -   1.00000506  x   0.99979932  =   0.99980438
 JV5379
 JV5379:                Primary Azimuth Mark                     Grid Az
 JV5379:SPC MD       -  COX                                      133 47 12.9
 JV5379:UTM  18      -  COX                                      135 03 02.9
 JV5379
 JV5379_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7276551145(NAD 83)
 JV5379
 JV5379|---------------------------------------------------------------------|
 JV5379| PID    Reference Object                     Distance      Geod. Az  |
 JV5379|                                                           dddmmss.s |
 JV5379| CA9390 ESSEX RM 1                           15.590 METERS 06849     |
 JV5379| JV5398 COX                                 APPROX. 1.2 KM 1340657.8 |
 JV5379| JV5396 BALTIMORE CITY SEWAGE PLANT TK      APPROX. 2.0 KM 2485804.5 |
 JV5379|---------------------------------------------------------------------|
 JV5379
 JV5379                          SUPERSEDED SURVEY CONTROL
 JV5379
 JV5379  NAD 83(1986)-  39 18 01.24882(N)    076 28 32.10607(W) AD(       ) 2
 JV5379  NAD 27      -  39 18 00.86300(N)    076 28 33.24700(W) AD(       ) 2
 JV5379
 JV5379.Superseded values are not recommended for survey control.
 JV5379
 JV5379.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5379.See file dsdata.pdf to determine how the superseded data were derived.
 JV5379
 JV5379_MARKER: DS = TRIANGULATION STATION DISK
 JV5379_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5379_STAMPING: ESSEX 1934
 JV5379_MARK LOGO: CGS
 JV5379_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5379+STABILITY: SURFACE MOTION
 JV5379
 JV5379  HISTORY     - Date     Condition        Report By
 JV5379  HISTORY     - 1934     MONUMENTED       CGS
 JV5379  HISTORY     - 1974     MARK NOT FOUND   MDDNR
 JV5379  HISTORY     - 1979     GOOD             NGS
 JV5379  HISTORY     - 19940719 MARK NOT FOUND   USPSQD
 JV5379  HISTORY     - 19961006 GOOD             USPSQD
 JV5379
 JV5379                          STATION DESCRIPTION
 JV5379
 JV5379'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5379'ON NORTHERN SHORE OF BACK RIVER, ON SMALL POINT ABOUT MIDWAY
 JV5379'BETWEEN COX POINT AND E END OF EASTERN AVENUE BRIDGE.  STATION IS
 JV5379'25 FEET N OF HIGH-WATER LINE, 40 FEET E OF HIGH-WATER LINE AND 10
 JV5379'FEET FROM TOP OF BLUFF.  STATION ON PROPERTY OF ESSEX OUTING CLUB.
 JV5379'
 JV5379'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5379'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5379'
 JV5379'REFERENCE MARK IS 51 FEET E OF STATION ON TOP BLUFF AND 3 FEET
 JV5379'FROM LARGE OAK TREE.
 JV5379
 JV5379                          STATION RECOVERY (1974)
 JV5379
 JV5379'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 JV5379'ESSEX 1934 NOT RECOVD.
 JV5379'
 JV5379'ESSEX NO1 1934 GOOD
 JV5379'
 JV5379'RM RECOVD. ON TOP OF SLOPE IN HEDGE LINE 5 FT NE OF LARGE MAPLE
 JV5379'TREE.  STA. WAS PROBED FOR BUT NOT FOUND.  POSSIBLE STILL
 JV5379'RECOVERABLE WITH MORE DIGGING.
 JV5379
 JV5379                          STATION RECOVERY (1979)
 JV5379
 JV5379'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 JV5379'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV5379'CONDITION.  ADDITIONAL INFORMATION FOLLOWS.
 JV5379'
 JV5379'TO REACH FROM THE EAST END OF THE BRIDGE OVER THE BACK RIVER ON
 JV5379'EASTERN AVENUE IN ESSEX, GO EAST ON EASTERN AVENUE FOR 0.45 MILE
 JV5379'TO A CROSSROADS.  TURN RIGHT AND GO SOUTHERLY ON RIVERSIDE DRIVE
 JV5379'FOR 0.4 MILE TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO SOUTHWEST
 JV5379'ON A GRAVELED ROAD FOR 0.1 MILE TO A ONE STORY BRICK HOUSE AND THE
 JV5379'STATION 157 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE HOUSE,
 JV5379'17 FEET EAST OF A SMALL BRICK BULKHEAD AND 14 FEET WEST OF THE
 JV5379'BOTTOM OF THE BLUFF AT THE EAST SHORE OF THE BACK RIVER.  IT IS
 JV5379'ABOUT 3 FEET ABOVE THE WATER.
 JV5379'
 JV5379'REFERENCE MARK 1 IS ON THE TOP OF THE 20 FOOT BLUFF IN A HEDGE, 106
 JV5379'FEET NORTHWEST OF THE NORTHWEST CORNER OF THE BRICK HOUSE AND 101
 JV5379'FEET WEST OF A POWERLINE POLE NUMBERED 113703.
 JV5379
 JV5379                          STATION RECOVERY (1994)
 JV5379
 JV5379'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5379'MARK NOT FOUND.
 JV5379
 JV5379                          STATION RECOVERY (1996)
 JV5379
 JV5379'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV5379'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4016 ***********************************************************************
 JV4016  TIDAL BM    -  This is a Tidal Bench Mark.
 JV4016  DESIGNATION -  ESSEX TANK 3
 JV4016  PID         -  JV4016
 JV4016  STATE/COUNTY-  MD/BALTIMORE
 JV4016  COUNTRY     -  US
 JV4016  USGS QUAD   -  MIDDLE RIVER (2016)
 JV4016
 JV4016                         *CURRENT SURVEY CONTROL
 JV4016  ______________________________________________________________________
 JV4016* NAD 83(1991) POSITION- 39 19 00.21937(N) 076 28 39.30417(W)   NO CHECK
 JV4016* NAVD 88 ORTHO HEIGHT -    31.81  (+/-2cm)      104.4   (feet) VERTCON3
 JV4016  ______________________________________________________________________
 JV4016  GEOID HEIGHT    -        -32.961 (meters)                     GEOID18
 JV4016  LAPLACE CORR    -         -2.82  (seconds)                    DEFLEC18
 JV4016  HORZ ORDER      -  SECOND
 JV4016  VERT ORDER      -  THIRD (See Below)
 JV4016
 JV4016.The horizontal coordinates were established by classical geodetic methods
 JV4016.and adjusted by the National Geodetic Survey in January 1992.
 JV4016
 JV4016.No horizontal observational check was made to the station.
 JV4016
 JV4016.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4016.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4016
 JV4016.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4016.GEOID18 height accuracy estimate available here.
 JV4016
 JV4016.The vertical order pertains to the NGVD 29 superseded value.
 JV4016
 JV4016.This Tidal Bench Mark is designated as VM 14934
 JV4016.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV4016
 JV4016.Click photographs - Photos may exist for this station.
 JV4016
 JV4016.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4016
 JV4016. The following values were computed from the NAD 83(1991) position.
 JV4016
 JV4016;                    North         East     Units Scale Factor Converg.
 JV4016;SPC MD       -   183,296.449   445,051.350   MT  0.99997940   +0 19 40.4
 JV4016;SPC MD       -   601,365.10  1,460,139.30   sFT  0.99997940   +0 19 40.4
 JV4016;UTM  18      - 4,352,965.935   372,622.936   MT  0.99979977   -0 56 10.8
 JV4016
 JV4016!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4016!SPC MD       -   1.00000018  x   0.99997940  =   0.99997958
 JV4016!UTM  18      -   1.00000018  x   0.99979977  =   0.99979995
 JV4016
 JV4016_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7262252965(NAD 83)
 JV4016
 JV4016|---------------------------------------------------------------------|
 JV4016| PID    Reference Object                     Distance      Geod. Az  |
 JV4016|                                                           dddmmss.s |
 JV4016| JV3747 ESSEX TANK 2 RM 1                    31.693 METERS 08123     |
 JV4016| JV0494 ESSEX TANK 2                          9.092 METERS 18102     |
 JV4016| JV4017 ESSEX TANK 3 RM 3                    36.942 METERS 20032     |
 JV4016| JV4018 ESSEX TANK 3 RM 4                    23.521 METERS 24534     |
 JV4016|---------------------------------------------------------------------|
 JV4016
 JV4016                          SUPERSEDED SURVEY CONTROL
 JV4016
 JV4016  NAD 83(1986)-  39 19 00.21485(N)    076 28 39.31307(W) AD(       ) 2
 JV4016  NAD 27      -  39 18 59.82678(N)    076 28 40.45013(W) AD(       ) 2
 JV4016  NGVD 29 (??/??/??)   32.06   (m)          105.2    (f) RESET       3  
 JV4016  NGVD 29              32.05   (m)          105.2    (f) LEVELING    3  
 JV4016
 JV4016.Superseded values are not recommended for survey control.
 JV4016
 JV4016.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4016.See file dsdata.pdf to determine how the superseded data were derived.
 JV4016
 JV4016_MARKER: DH = HORIZONTAL CONTROL DISK
 JV4016_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4016_STAMPING: ESSEX TANK 3 1977
 JV4016_MARK LOGO: NGS
 JV4016_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4016+STABILITY: SURFACE MOTION
 JV4016
 JV4016  HISTORY     - Date     Condition        Report By
 JV4016  HISTORY     - 1977     MONUMENTED       NGS
 JV4016  HISTORY     - 1977     GOOD             NGS
 JV4016  HISTORY     - 19940719 GOOD             USPSQD
 JV4016  HISTORY     - 19950717 MARK NOT FOUND   USPSQD
 JV4016  HISTORY     - 19971027 MARK NOT FOUND   USPSQD
 JV4016
 JV4016                          STATION DESCRIPTION
 JV4016
 JV4016'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 JV4016'THE STATION IS LOCATED 7-1/2 MILES WEST OF BALTIMORE, 1/2 MILE
 JV4016'NORTH OF ESSEX, AND 1/2 MILE EAST OF BACK RIVER, ON PROPERTY
 JV4016'OWNED BY IACHETTA BUILDING CONTRACTOR, TELEPHONE NUMBER (301) 391
 JV4016'1531.
 JV4016'
 JV4016'TO REACH FROM THE INTERSECTION OF INTERSTATE 695 AND STATE HIGHWAY
 JV4016'150 (EASTERN BOULEVARD) IN ESSEX, GO NORTHEAST ON STATE HIGHWAY
 JV4016'150 (EASTERN BOULEVARD) FOR 1.35 MILES TO MACE AVENUE.  TURN LEFT
 JV4016'AND GO NORTH-NORTHEAST ON MACE AVENUE FOR 0.65 MILE TO
 JV4016'UPPERLANDING ROAD.  TURN LEFT AND GO WEST-NORTHWEST ON
 JV4016'UPPERLANDING ROAD FOR 0.15 MILE TO TOP OF HILL AND STATION ON THE
 JV4016'RIGHT.
 JV4016'
 JV4016'THE STATION MARK IS A STANDARD DISK STAMPED ESSEX TANK 3 1977 SET
 JV4016'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS 2-INCHES
 JV4016'BELOW THE SURFACE.  IT IS 140 FEET NORTH OF UPPERLANDING ROAD, 122
 JV4016'FEET NORTH-NORTHWEST OF POWERLINE POLE NUMBER 5, 110 FEET NORTH OF
 JV4016'THE SOUTHWEST CORNER OF FENCE, 21 FEET NORTH-NORTHWEST OF PROPOSED
 JV4016'NORTHWEST CORNER OF NEW HOUSE, 3 FEET EAST OF A FENCE, AND 1.4
 JV4016'FEET WEST OF A WITNESS POST.
 JV4016'
 JV4016'REFERENCE MARK 3 IS A STANDARD DISK STAMPED ESSEX TANK 3 NO 3 1977
 JV4016'SET IN A DRILL HOLE IN A CURB ALONG NORTH SIDE OF UPPERLANDING
 JV4016'ROAD AND ABOUT 6 INCHES ABOVE ROAD.  IT IS 121 FEET SOUTH OF A
 JV4016'WITNESS POST, 22.3 FEET WEST OF POWERLINE POLE NUMBER 5, 19.2 FEET
 JV4016'NORTH OF THE CENTER OF UPPERLANDING ROAD, AND 11 FEET SOUTH OF
 JV4016'SOUTHWEST CORNER OF A FENCE.
 JV4016'
 JV4016'REFERENCE MARK 4 IS A STANDARD DISK STAMPED ESSEX TANK 3 NO 4 1977
 JV4016'SET IN A DRILL HOLE IN A SIDEWALK ALONG EAST SIDE OF MR. MCKIMS
 JV4016'HOUSE.  IT IS 86 FEET NORTH OF THE CENTER OF UPPERLANDING ROAD, 78
 JV4016'FEET WEST-SOUTHWEST OF A WITNESS POST, 9.5 FEET SOUTH-SOUTHEAST OF
 JV4016'NORTHEAST CORNER OF MR. FRANK MCKIMS HOUSE, AND 2 FEET EAST OF
 JV4016'EAST SIDE OF MR. FRANK MCKIMS HOUSE.
 JV4016'
 JV4016'THERE IS NO SUITABLE LOCATION TO SET AN AZIMUTH MARK.  THE
 JV4016'STATION IS SURROUNDED BY TREES AND HOUSES.
 JV4016'
 JV4016'NEAREST TOWN--ESSEX.
 JV4016
 JV4016                          STATION RECOVERY (1977)
 JV4016
 JV4016'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 JV4016'0.5 MI N FROM ESSEX.
 JV4016'LOCATED 1.35 MILES NORTHEAST ALONG STATE HIGHWAY 150 (EASTERN
 JV4016'BLVD) FROM ITS JUNCTION WITH INTERSTATE HIGHWAY 695 IN ESSEX,
 JV4016'THENCE 0.65 MILE NORTH-NORTHEAST ALONG MACE AVENUE, THENCE 0.15 MILE
 JV4016'WEST-NORTHWEST ALONG UPPERLANDING ROAD, 140 FEET NORTH OF THE CENTER
 JV4016'OF UPPERLANDING ROAD, 110 FEET NORTH OF A FENCE CORNER, 122 FEET
 JV4016'NORTH-NORTHWEST OF A POWERLINE POLE NUMBERED 5, 21 FEET NORTH-
 JV4016'NORTHWEST OF THE PROPOSED NORTHWEST CORNER OF A NEW HOUSE, 3 FEET
 JV4016'EAST OF A FENCE AND ON THE HIGHEST POINT IN THE AREA.  MARK IS .3
 JV4016'FEET ABOVE UPPERLANDING ROAD, 1.4 FEET WEST OF A WITNESS POST AND
 JV4016'.2 FEET BELOW THE SURFACE OF THE GROUND.
 JV4016
 JV4016                          STATION RECOVERY (1994)
 JV4016
 JV4016'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV4016'RECOVERED IN GOOD CONDITION.
 JV4016
 JV4016                          STATION RECOVERY (1995)
 JV4016
 JV4016'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4016'MARK NOT FOUND.
 JV4016
 JV4016                          STATION RECOVERY (1997)
 JV4016
 JV4016'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4016'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4017 ***********************************************************************
 JV4017  TIDAL BM    -  This is a Tidal Bench Mark.
 JV4017  DESIGNATION -  ESSEX TANK 3 RM 3
 JV4017  PID         -  JV4017
 JV4017  STATE/COUNTY-  MD/BALTIMORE
 JV4017  COUNTRY     -  US
 JV4017  USGS QUAD   -  MIDDLE RIVER (2016)
 JV4017
 JV4017                         *CURRENT SURVEY CONTROL
 JV4017  ______________________________________________________________________
 JV4017* NAD 83(1986) POSITION- 39 18 59.09   (N) 076 28 39.84   (W)   HD_HELD1
 JV4017* NAVD 88 ORTHO HEIGHT -    31.11  (meters)      102.1   (feet) RESET
 JV4017  ______________________________________________________________________
 JV4017  GEOID HEIGHT    -        -32.961 (meters)                     GEOID18
 JV4017  VERT ORDER      -  THIRD
 JV4017
 JV4017.The horizontal coordinates were determined by differentially corrected
 JV4017.hand held GPS observations or other comparable positioning techniques
 JV4017.and have an estimated accuracy of +/- 3 meters.
 JV4017
 JV4017.The orthometric height was computed from unverified reset data.
 JV4017
 JV4017.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4017.GEOID18 height accuracy estimate available here.
 JV4017
 JV4017.This Tidal Bench Mark is designated as VM 14933
 JV4017.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV4017
 JV4017.Click photographs - Photos may exist for this station.
 JV4017
 JV4017;                    North         East    Units  Estimated Accuracy
 JV4017;SPC MD       -   183,261.5     445,038.7     MT  (+/- 3 meters HH1 GPS) 
 JV4017
 JV4017_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7260952931(NAD 83)
 JV4017
 JV4017                          SUPERSEDED SURVEY CONTROL
 JV4017
 JV4017  NGVD 29 (??/??/??)   31.35   (m)          102.9    (f) RESET       3  
 JV4017
 JV4017.Superseded values are not recommended for survey control.
 JV4017
 JV4017.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4017.See file dsdata.pdf to determine how the superseded data were derived.
 JV4017
 JV4017_MARKER: DR = REFERENCE MARK DISK
 JV4017_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV4017_SP_SET: CURB
 JV4017_STAMPING: ESSEX TANK 3 NO 3 1977
 JV4017_MARK LOGO: NGS
 JV4017_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4017
 JV4017  HISTORY     - Date     Condition        Report By
 JV4017  HISTORY     - 1977     MONUMENTED       NGS
 JV4017  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV4017  HISTORY     - 19950717 GOOD             USPSQD
 JV4017  HISTORY     - 19950718 GOOD             USPSQD
 JV4017  HISTORY     - 19961006 GOOD             USPSQD
 JV4017  HISTORY     - 19971027 GOOD             USPSQD
 JV4017
 JV4017                          STATION DESCRIPTION
 JV4017
 JV4017'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 JV4017'0.5 MI N FROM ESSEX.
 JV4017'LOCATED 1.35 MILES NORTHEAST ALONG STATE HIGHWAY 150 (EASTERN
 JV4017'BLVD) FROM ITS JUNCTION WITH INTERSTATE HIGHWAY 695 IN ESSEX,
 JV4017'THENCE 0.65 MILE NORTH-NORTHEAST ALONG MACE AVENUE, THENCE WEST
 JV4017'NORTHWEST ALONG UPPERLANDING ROAD FOR 0.15 MILE, 121 FEET SOUTH
 JV4017'OF ESSEX TANK 3, 22.3 FEET WEST OF A POWERLINE POLE NUMBERED 5, 19.2
 JV4017'FEET NORTH OF THE CENTER OF UPPERLANDING ROAD AND 11 FEET SOUTH OF A
 JV4017'FENCE CORNER.  MARK IS .5 FEET ABOVE UPPERLANDING ROAD AND 121 FEET
 JV4017'SOUTH OF A WITNESS POST.
 JV4017
 JV4017                          STATION RECOVERY (1994)
 JV4017
 JV4017'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV4017'MARK NOT FOUND.
 JV4017
 JV4017                          STATION RECOVERY (1995)
 JV4017
 JV4017'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4017'RECOVERED IN GOOD CONDITION.
 JV4017
 JV4017                          STATION RECOVERY (1995)
 JV4017
 JV4017'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4017'RECOVERED IN GOOD CONDITION.
 JV4017
 JV4017                          STATION RECOVERY (1996)
 JV4017
 JV4017'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV4017'RECOVERED IN GOOD CONDITION.
 JV4017
 JV4017                          STATION RECOVERY (1997)
 JV4017
 JV4017'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4017'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4018 ***********************************************************************
 JV4018  TIDAL BM    -  This is a Tidal Bench Mark.
 JV4018  DESIGNATION -  ESSEX TANK 3 RM 4
 JV4018  PID         -  JV4018
 JV4018  STATE/COUNTY-  MD/BALTIMORE
 JV4018  COUNTRY     -  US
 JV4018  USGS QUAD   -  MIDDLE RIVER (2016)
 JV4018
 JV4018                         *CURRENT SURVEY CONTROL
 JV4018  ______________________________________________________________________
 JV4018* NAD 83(1986) POSITION- 39 18 59.90   (N) 076 28 40.20   (W)   HD_HELD1
 JV4018* NAVD 88 ORTHO HEIGHT -    31.73  (meters)      104.1   (feet) RESET
 JV4018  ______________________________________________________________________
 JV4018  GEOID HEIGHT    -        -32.961 (meters)                     GEOID18
 JV4018  VERT ORDER      -  THIRD
 JV4018
 JV4018.The horizontal coordinates were determined by differentially corrected
 JV4018.hand held GPS observations or other comparable positioning techniques
 JV4018.and have an estimated accuracy of +/- 3 meters.
 JV4018
 JV4018.The orthometric height was computed from unverified reset data.
 JV4018
 JV4018.No vertical observational check was made to the station.
 JV4018
 JV4018.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4018.GEOID18 height accuracy estimate available here.
 JV4018
 JV4018.This Tidal Bench Mark is designated as VM 14935
 JV4018.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 JV4018
 JV4018.Click photographs - Photos may exist for this station.
 JV4018
 JV4018;                    North         East    Units  Estimated Accuracy
 JV4018;SPC MD       -   183,286.5     445,029.9     MT  (+/- 3 meters HH1 GPS) 
 JV4018
 JV4018_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7260152956(NAD 83)
 JV4018
 JV4018                          SUPERSEDED SURVEY CONTROL
 JV4018
 JV4018  NGVD 29 (??/??/??)   31.96   (m)          104.9    (f) RESET       3  
 JV4018
 JV4018.Superseded values are not recommended for survey control.
 JV4018
 JV4018.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4018.See file dsdata.pdf to determine how the superseded data were derived.
 JV4018
 JV4018_MARKER: DR = REFERENCE MARK DISK
 JV4018_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV4018_SP_SET: SIDEWALK
 JV4018_STAMPING: ESSEX TANK 3 NO 4 1977
 JV4018_MARK LOGO: NGS
 JV4018_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4018
 JV4018  HISTORY     - Date     Condition        Report By
 JV4018  HISTORY     - 1977     MONUMENTED       NGS
 JV4018  HISTORY     - 19950718 GOOD             USPSQD
 JV4018  HISTORY     - 19971027 GOOD             USPSQD
 JV4018
 JV4018                          STATION DESCRIPTION
 JV4018
 JV4018'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 JV4018'0.5 MI N FROM ESSEX.
 JV4018'LOCATED 1.35 MILES NORTHEAST ALONG STATE HIGHWAY 150 FROM ITS
 JV4018'JUNCTION WITH INTERSTATE HIGHWAY 695 AT ESSEX, THENCE 0.65 MILE
 JV4018'NORTH-NORTHEAST ALONG MACE AVENUE, THENCE 0.15 MILE
 JV4018'WEST-NORTHWEST ALONG UPPERLANDING, 86 FEET NORTH OF THE CENTER OF
 JV4018'UPPERLANDING ROAD, 9.5 FEET SOUTH-SOUTHEAST OF THE NORTHEAST CORNER
 JV4018'OF MR. FRANCIS MCKINS HOUSE AND 2 FEET EAST OF THE EAST SIDE OF THE
 JV4018'HOUSE.  MARK IS 2 FEET ABOVE UPPERLANDING ROAD, .78 FEET WSW OF A
 JV4018'WITNESS POST.
 JV4018
 JV4018                          STATION RECOVERY (1995)
 JV4018
 JV4018'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4018'RECOVERED IN GOOD CONDITION.
 JV4018
 JV4018                          STATION RECOVERY (1997)
 JV4018
 JV4018'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4018'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6910 ***********************************************************************
 JV6910  DESIGNATION -  ETL 5
 JV6910  PID         -  JV6910
 JV6910  STATE/COUNTY-  MD/MONTGOMERY
 JV6910  COUNTRY     -  US
 JV6910  USGS QUAD   -  ROCKVILLE (2016)
 JV6910
 JV6910                         *CURRENT SURVEY CONTROL
 JV6910  ______________________________________________________________________
 JV6910* NAD 83(1986) POSITION- 39 07 22.     (N) 077 13 22.     (W)   SCALED
 JV6910* NAVD 88 ORTHO HEIGHT -   117.381 (meters)      385.11  (feet) ADJUSTED
 JV6910  ______________________________________________________________________
 JV6910  GEOID HEIGHT    -        -31.738 (meters)                     GEOID18
 JV6910  DYNAMIC HEIGHT  -        117.320 (meters)      384.91  (feet) COMP
 JV6910  MODELED GRAVITY -    980,102.4   (mgal)                       NAVD 88
 JV6910
 JV6910  VERT ORDER      -  FIRST     CLASS I
 JV6910
 JV6910.The horizontal coordinates were scaled from a map and have
 JV6910.an estimated accuracy of +/- 6 seconds.
 JV6910
 JV6910.The orthometric height was determined by differential leveling and
 JV6910.adjusted by the NATIONAL GEODETIC SURVEY
 JV6910.in July 1994.
 JV6910
 JV6910.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6910.GEOID18 height accuracy estimate available here.
 JV6910
 JV6910.Click photographs - Photos may exist for this station.
 JV6910
 JV6910.The dynamic height is computed by dividing the NAVD 88
 JV6910.geopotential number by the normal gravity value computed on the
 JV6910.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6910.degrees latitude (g = 980.6199 gals.).
 JV6910
 JV6910.The modeled gravity was interpolated from observed gravity values.
 JV6910
 JV6910;                    North         East    Units  Estimated Accuracy
 JV6910;SPC MD       -   161,660.      380,740.      MT  (+/- 180 meters Scaled)
 JV6910
 JV6910_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ078327(NAD 83)
 JV6910
 JV6910                          SUPERSEDED SURVEY CONTROL
 JV6910
 JV6910.No superseded survey control is available for this station.
 JV6910
 JV6910_MARKER: DV = VERTICAL CONTROL DISK
 JV6910_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6910_STAMPING: ETL 5
 JV6910_MARK LOGO: NGS
 JV6910_PROJECTION: FLUSH
 JV6910_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6910_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6910_ROD/PIPE-DEPTH: 20 meters
 JV6910
 JV6910  HISTORY     - Date     Condition        Report By
 JV6910  HISTORY     - 1991     MONUMENTED       NGS
 JV6910  HISTORY     - 19911015 GOOD             NGS
 JV6910  HISTORY     - 19970912 GOOD             NGS
 JV6910
 JV6910                          STATION DESCRIPTION
 JV6910
 JV6910'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6910'GO WEST ALONG SOUTH DRIVE FOR 0.25 MILES (0.40 KM) FROM THE
 JV6910'INTERSECTION OF SOUTH DRIVE AND EAST DRIVE TO CENTER DRIVE THENCE .6
 JV6910'MILE (1.0 KM) SOUTH ALONG CENTER DRIVE, THENCE .15 MILE (0.24 KM)
 JV6910'WESTERLY CROSS CROUNTRY (BASICALLY PARALLEL WITH CREEK), NORTH OF
 JV6910'STONE TEST WALL, APROXIMATELY 300 METERS (984.2 FT) SOUTHEAST, IN
 JV6910'LINE WITH A SERIES OF ELT MARKS, 45 METERS (147.6 FT) NORTH OF A
 JV6910'SMALL CREEK (PACED), 58 METERS (190.3 FT) SOUTH OF A 14 INCH CEDAR
 JV6910'TREE (PACED), AND ON LINE WITH THE STONE TEST WALL AND CEDAR TREE.
 JV6910'NOTE ACCESS IS HAD THROUGH A 5 INCH LOGO CAP.
 JV6910
 JV6910                          STATION RECOVERY (1997)
 JV6910
 JV6910'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (RLA)
 JV6910'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7125 ***********************************************************************
 HV7125  DESIGNATION -  ETNA
 HV7125  PID         -  HV7125
 HV7125  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7125  COUNTRY     -  US
 HV7125  USGS QUAD   -  SOUTH RIVER (2016)
 HV7125
 HV7125                         *CURRENT SURVEY CONTROL
 HV7125  ______________________________________________________________________
 HV7125* NAD 83(1991) POSITION- 38 52 56.28861(N) 076 31 05.18287(W)   ADJUSTED
 HV7125* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7125  ______________________________________________________________________
 HV7125  GEOID HEIGHT    -        -33.441 (meters)                     GEOID18
 HV7125  LAPLACE CORR    -         -3.71  (seconds)                    DEFLEC18
 HV7125  HORZ ORDER      -  THIRD
 HV7125
 HV7125.The horizontal coordinates were established by classical geodetic methods
 HV7125.and adjusted by the National Geodetic Survey in January 1992.
 HV7125
 HV7125.The orthometric height was scaled from a topographic map.
 HV7125
 HV7125.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7125.GEOID18 height accuracy estimate available here.
 HV7125
 HV7125.Click photographs - Photos may exist for this station.
 HV7125
 HV7125.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7125
 HV7125. The following values were computed from the NAD 83(1991) position.
 HV7125
 HV7125;                    North         East     Units Scale Factor Converg.
 HV7125;SPC MD       -   135,051.086   441,811.494   MT  0.99994985   +0 18 08.8
 HV7125;SPC MD       -   443,080.10  1,449,509.88   sFT  0.99994985   +0 18 08.8
 HV7125;UTM  18      - 4,304,810.855   368,323.700   MT  0.99981351   -0 57 11.1
 HV7125
 HV7125!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7125!SPC MD       -   1.00000513  x   0.99994985  =   0.99995498
 HV7125!UTM  18      -   1.00000513  x   0.99981351  =   0.99981864
 HV7125
 HV7125:                Primary Azimuth Mark                     Grid Az
 HV7125:SPC MD       -  DELTA                                    162 10 50.6
 HV7125:UTM  18      -  DELTA                                    163 26 10.5
 HV7125
 HV7125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6832304810(NAD 83)
 HV7125
 HV7125|---------------------------------------------------------------------|
 HV7125| PID    Reference Object                     Distance      Geod. Az  |
 HV7125|                                                           dddmmss.s |
 HV7125| CX2746 ETNA RP                               5.400 METERS 04145     |
 HV7125| HV7130 DELTA                               APPROX. 0.7 KM 1622859.4 |
 HV7125| HV7123 TURF                                436.722 METERS 2492720.4 |
 HV7125|---------------------------------------------------------------------|
 HV7125
 HV7125                          SUPERSEDED SURVEY CONTROL
 HV7125
 HV7125  NAD 83(1986)-  38 52 56.28541(N)    076 31 05.19479(W) AD(       ) 3
 HV7125  NAD 27      -  38 52 55.87900(N)    076 31 06.33300(W) AD(       ) 3
 HV7125  USSD        -  38 52 56.24200(N)    076 31 06.15600(W) AD(       ) 3
 HV7125
 HV7125.Superseded values are not recommended for survey control.
 HV7125
 HV7125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7125.See file dsdata.pdf to determine how the superseded data were derived.
 HV7125
 HV7125_MARKER: H = DRILL HOLE
 HV7125_SETTING: 0 = UNSPECIFIED SETTING
 HV7125
 HV7125  HISTORY     - Date     Condition        Report By
 HV7125  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7125  HISTORY     - 1933     MARK NOT FOUND   MDDNR
 HV7125
 HV7125                          STATION DESCRIPTION
 HV7125
 HV7125'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7125'ON THE E SHORE OF RHODE RIVER, ABOUT 400 YARDS N OF MOUTH OF CADLE
 HV7125'CREEK, 6 FEET BACK FROM EDGE OF A BANK 12 FEET HIGH, AND IN FRONT
 HV7125'OF AND 25 YARDS SW OF THE SECOND HOUSE N OF CADLE CREEK.
 HV7125'
 HV7125'STATION MARK IS AUGER HOLE IN PINE STUB PROJECTING 3 FEET ABOVE
 HV7125'SURFACE OF GROUND.
 HV7125'
 HV7125'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7125'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7125'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7125'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7125'IS 5.40 METERS (17.72 FEET) FROM STATION N 41 DEG 44 MIN W.
 HV7125'DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV7125'REFERENCE ARE AS FOLLOWS--N PEAK OF MURRAY WHARF HOUSE, 1 MILE, S
 HV7125'83 DEG 35 MIN W.  W CHIMNEY OF HOUSE, 1-1/4 MILES, N 70 DEG 15
 HV7125'MIN W.  SW CORNER OF CARR WHARF HOUSE, 1/4 MILE, N 38 DEG 28 MIN
 HV7125'W.  S CHIMNEY ON RED-ROOF HOUSE, 1/4 MILE, N 27 DEG 02 MIN W.  NW
 HV7125'CORNER OF PICKET FENCE, 17.45 METERS (57.3 FEET), N 11 DEG 40
 HV7125'MIN W.  SW CORNER OF PICKET FENCE.  11.85 METERS (38.9 FEET), N 62
 HV7125'DEG 27 MIN E.
 HV7125
 HV7125                          STATION RECOVERY (1933)
 HV7125
 HV7125'RECOVERY NOTE BY MD DEPT OF NAT RES 1933
 HV7125'STATION REPORTED LOST BY H.E. COLLINS, ENGINEER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4698 ***********************************************************************
 JV4698  DESIGNATION -  ETNA
 JV4698  PID         -  JV4698
 JV4698  STATE/COUNTY-  MD/WASHINGTON
 JV4698  COUNTRY     -  US
 JV4698  USGS QUAD   -  FUNKSTOWN (2017)
 JV4698
 JV4698                         *CURRENT SURVEY CONTROL
 JV4698  ______________________________________________________________________
 JV4698* NAD 83(1991) POSITION- 39 35 14.65547(N) 077 40 13.08387(W)   ADJUSTED
 JV4698* NAVD 88 ORTHO HEIGHT -   183.    (meters)      600.    (feet) SCALED
 JV4698  ______________________________________________________________________
 JV4698  GEOID HEIGHT    -        -33.894 (meters)                     GEOID18
 JV4698  LAPLACE CORR    -          7.04  (seconds)                    DEFLEC18
 JV4698  HORZ ORDER      -  SECOND
 JV4698
 JV4698.The horizontal coordinates were established by classical geodetic methods
 JV4698.and adjusted by the National Geodetic Survey in January 1992.
 JV4698
 JV4698.The orthometric height was scaled from a topographic map.
 JV4698
 JV4698.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4698.GEOID18 height accuracy estimate available here.
 JV4698
 JV4698.Click photographs - Photos may exist for this station.
 JV4698
 JV4698.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4698
 JV4698. The following values were computed from the NAD 83(1991) position.
 JV4698
 JV4698;                    North         East     Units Scale Factor Converg.
 JV4698;SPC MD       -   213,430.632   342,416.359   MT  1.00002693   -0 25 14.5
 JV4698;SPC MD       -   700,230.33  1,123,411.00   sFT  1.00002693   -0 25 14.5
 JV4698;UTM  18      - 4,385,371.447   270,682.210   MT  1.00024748   -1 42 08.6
 JV4698
 JV4698!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4698!SPC MD       -   0.99997664  x   1.00002693  =   1.00000357
 JV4698!UTM  18      -   0.99997664  x   1.00024748  =   1.00022411
 JV4698
 JV4698_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7068285371(NAD 83)
 JV4698
 JV4698                          SUPERSEDED SURVEY CONTROL
 JV4698
 JV4698  NAD 83(1986)-  39 35 14.65539(N)    077 40 13.09396(W) AD(       ) 2
 JV4698  NAD 27      -  39 35 14.30250(N)    077 40 14.11990(W) AD(       ) 2
 JV4698
 JV4698.Superseded values are not recommended for survey control.
 JV4698
 JV4698.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4698.See file dsdata.pdf to determine how the superseded data were derived.
 JV4698
 JV4698_MARKER: DD = SURVEY DISK
 JV4698_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4698_STAMPING: ETNA 1957
 JV4698_MARK LOGO: MDBCSM
 JV4698_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4698+STABILITY: SURFACE MOTION
 JV4698
 JV4698  HISTORY     - Date     Condition        Report By
 JV4698  HISTORY     - 1958     MONUMENTED       MDBCSM
 JV4698  HISTORY     - 1974     SEE DESCRIPTION  NGS
 JV4698
 JV4698                          STATION DESCRIPTION
 JV4698
 JV4698'DESCRIBED BY MD BUR SURV AND MAPS 1958 (JCE)
 JV4698'STATION IS LOCATED ALONG THE SOUTH SIDE OF U.S. HIGHWAY NO. 40
 JV4698'ABOUT 4-1/2 MILES SOUTHEAST OF THE CENTER OF HAGERSTOWN.  STATION
 JV4698'IS A MARYLAND BUREAU OF CONTROL SURVEY DISK SET IN A 6 INCH
 JV4698'CONCRETE CYLINDER ABOUT 6 FEET SOUTHWEST OF THE SOUTH BACK SLOPE
 JV4698'OF CUT BANK, 21 FEET NORTHWEST OF FENCE CORNER AND 3-1/2 FEET
 JV4698'EAST-NORTHEAST OF FENCELINE.  THE MARK PROJECTS 3 INCHES AND THE
 JV4698'DISK IS STAMPED ETNA 1957.
 JV4698'
 JV4698'A TRAVERSE CONNECTION WAS MADE FROM TRIANGULATION STATION SETNA TO
 JV4698'ETNA (MBCS) AND THE DISTANCE IS 46.95 FEET OR 14.310 METERS.
 JV4698'
 JV4698'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JV4698'HIGHWAY NO. 66 WHICH IS ABOUT 17.7 MILES NORTHWEST OF FREDERICK, GO
 JV4698'NORTHWESTERLY ON U.S. HIGHWAY NO. 40 FOR 1.75 MILES TO CROSSROADS
 JV4698'AT NORTHWEST END OF LOW CUT.  TURN LEFT AND GO SOUTHWESTERLY ON
 JV4698'DIRT ROAD FOR 0.05 MILE TO WIRE GATE ON LEFT (SOUTHEAST) SIDE OF
 JV4698'ROAD.  TURN RIGHT, PASS THROUGH GATE AND CONTINUE SOUTHEASTERLY
 JV4698'TO TOP OF SMALL KNOLL AT FENCE CORNER AND STATION AS DESCRIBED.
 JV4698
 JV4698                          STATION RECOVERY (1974)
 JV4698
 JV4698'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV4698'THE DISK WAS FOUND REMOVED FROM THE MONUMENT WITH THE TOP OF THE
 JV4698'CONCRETE POST BROKEN AND CHIPPED OFF.  THE POST WAS LEFT INTACT
 JV4698'AND A NEW REFERENCE MARK 2 SET NEAR IT FOR TRIANGULATION STATION
 JV4698'SETNA 1958.  THIS POINT WAS FORMERLY USED AS A REFERENCE MARK
 JV4698'FOR STATION SETNA 1958.
 JV4698'
 JV4698'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4698'4-1/2 MILES SOUTHEAST OF HAGERSTOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5942 ***********************************************************************
 HV5942  DESIGNATION -  ETTA MSFC 1910
 HV5942  PID         -  HV5942
 HV5942  STATE/COUNTY-  MD/DORCHESTER
 HV5942  COUNTRY     -  US
 HV5942  USGS QUAD   -  CHURCH CREEK (2016)
 HV5942
 HV5942                         *CURRENT SURVEY CONTROL
 HV5942  ______________________________________________________________________
 HV5942* NAD 83(1991) POSITION- 38 32 02.56214(N) 076 11 55.14894(W)   ADJUSTED
 HV5942* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5942  ______________________________________________________________________
 HV5942  GEOID HEIGHT    -        -34.835 (meters)                     GEOID18
 HV5942  LAPLACE CORR    -         -5.19  (seconds)                    DEFLEC18
 HV5942  HORZ ORDER      -  THIRD
 HV5942
 HV5942.The horizontal coordinates were established by classical geodetic methods
 HV5942.and adjusted by the National Geodetic Survey in January 1992.
 HV5942
 HV5942.The orthometric height was scaled from a topographic map.
 HV5942
 HV5942.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5942.GEOID18 height accuracy estimate available here.
 HV5942
 HV5942.Click photographs - Photos may exist for this station.
 HV5942
 HV5942.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5942
 HV5942. The following values were computed from the NAD 83(1991) position.
 HV5942
 HV5942;                    North         East     Units Scale Factor Converg.
 HV5942;SPC MD       -    96,589.080   469,867.678   MT  0.99996753   +0 30 10.6
 HV5942;SPC MD       -   316,892.67  1,541,557.54   sFT  0.99996753   +0 30 10.6
 HV5942;UTM  18      - 4,265,751.979   395,527.545   MT  0.99973441   -0 44 48.5
 HV5942
 HV5942!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5942!SPC MD       -   1.00000550  x   0.99996753  =   0.99997303
 HV5942!UTM  18      -   1.00000550  x   0.99973441  =   0.99973991
 HV5942
 HV5942:                Primary Azimuth Mark                     Grid Az
 HV5942:SPC MD       -  MARY MSFC 1910                           177 51 53.7
 HV5942:UTM  18      -  MARY MSFC 1910                           179 06 52.8
 HV5942
 HV5942_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9552765751(NAD 83)
 HV5942
 HV5942|---------------------------------------------------------------------|
 HV5942| PID    Reference Object                     Distance      Geod. Az  |
 HV5942|                                                           dddmmss.s |
 HV5942| HV5931 MARY MSFC 1910                      434.009 METERS 1782204.3 |
 HV5942|---------------------------------------------------------------------|
 HV5942
 HV5942                          SUPERSEDED SURVEY CONTROL
 HV5942
 HV5942  NAD 83(1986)-  38 32 02.55975(N)    076 11 55.16457(W) AD(       ) 3
 HV5942  NAD 27      -  38 32 02.15200(N)    076 11 56.35100(W) AD(       ) 3
 HV5942  USSD        -  38 32 02.53600(N)    076 11 56.12600(W) AD(       ) 3
 HV5942
 HV5942.Superseded values are not recommended for survey control.
 HV5942
 HV5942.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5942.See file dsdata.pdf to determine how the superseded data were derived.
 HV5942
 HV5942_MARKER: Z = SEE DESCRIPTION
 HV5942_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5942_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5942+STABILITY: SURFACE MOTION
 HV5942
 HV5942  HISTORY     - Date     Condition        Report By
 HV5942  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5942  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5942
 HV5942                          STATION DESCRIPTION
 HV5942
 HV5942'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5942'ON THE NORTHEASTERN SHORE OF FISHING CREEK, AT E SIDE OF ENTRANCE
 HV5942'TO SMALL CREEK ABOUT 1/4 MILE N OF WINDMILL POINT, ON MARSH, ABOUT
 HV5942'1 FOOT ABOVE HIGH WATER, 8 YARDS E OF SHORE, 9 YARDS NE OF SHORE,
 HV5942'11 YARDS SE OF SHORE, AND 100 YARDS W OF BARN.  STATION IS MARKED
 HV5942'BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5942'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV5942'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5942'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE MARK IS THE
 HV5942'CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES
 HV5942'BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO VARIOUS
 HV5942'POINTS OF REFERENCE ARE AS FOLLOWS--CUPOLA ON BROOKS BARN, 3/4
 HV5942'MILE, S 27 DEG 1 MIN W. CENTER OF CUPOLA ON BROOKS WORKSHOP, 3/4
 HV5942'MILE, S 30 DEG 7 MIN W.  RIGHT CHIMNEY OF HOUSE, 5/8 MILE, S 45
 HV5942'DEG 35 MIN W.  LEFT PEAK OF HOUSE, 1 MILE, N 84 DEG 39 MIN W.
 HV5942'CHIMNEY ON NEAR END HOUSE, 1/8 MILE, N 47 DEG 34 MIN W.  NEAR
 HV5942'PEAK OF HOUSE, 1/8 MILE N 37 DEG 27 MIN W.  NEAR PEAK OF LARGE
 HV5942'PART OF HOUSE, 1/8 MILE, N 35 DEG 56 MIN E.  PEAK OF BARN, 100
 HV5942'YARDS, N 77 DEG 9 MIN E.
 HV5942
 HV5942                          STATION RECOVERY (1961)
 HV5942
 HV5942'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5942'THE STATION WAS NOT RECOVERED AFTER A THOROUGH SEARCH OF THE AREA.
 HV5942'THE PUBLISHED DESCRIPTION IS INADEQUATE FOR PRESENT DAY RECOVERY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5392 ***********************************************************************
 JV5392  DESIGNATION -  EVA
 JV5392  PID         -  JV5392
 JV5392  STATE/COUNTY-  MD/BALTIMORE
 JV5392  COUNTRY     -  US
 JV5392  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5392
 JV5392                         *CURRENT SURVEY CONTROL
 JV5392  ______________________________________________________________________
 JV5392* NAD 83(1991) POSITION- 39 16 51.15179(N) 076 27 56.54643(W)   ADJUSTED
 JV5392* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5392  ______________________________________________________________________
 JV5392  GEOID HEIGHT    -        -32.999 (meters)                     GEOID18
 JV5392  LAPLACE CORR    -         -1.62  (seconds)                    DEFLEC18
 JV5392  HORZ ORDER      -  SECOND
 JV5392
 JV5392.The horizontal coordinates were established by classical geodetic methods
 JV5392.and adjusted by the National Geodetic Survey in January 1992.
 JV5392
 JV5392.The orthometric height was scaled from a topographic map.
 JV5392
 JV5392.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5392.GEOID18 height accuracy estimate available here.
 JV5392
 JV5392.Click photographs - Photos may exist for this station.
 JV5392
 JV5392.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5392
 JV5392. The following values were computed from the NAD 83(1991) position.
 JV5392
 JV5392;                    North         East     Units Scale Factor Converg.
 JV5392;SPC MD       -   179,322.193   446,098.879   MT  0.99997479   +0 20 07.2
 JV5392;SPC MD       -   588,326.23  1,463,576.07   sFT  0.99997479   +0 20 07.2
 JV5392;UTM  18      - 4,348,970.256   373,582.382   MT  0.99979677   -0 55 41.1
 JV5392
 JV5392!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5392!SPC MD       -   1.00000506  x   0.99997479  =   0.99997985
 JV5392!UTM  18      -   1.00000506  x   0.99979677  =   0.99980183
 JV5392
 JV5392:                Primary Azimuth Mark                     Grid Az
 JV5392:SPC MD       -  WETHER                                   319 06 09.2
 JV5392:UTM  18      -  WETHER                                   320 21 57.5
 JV5392
 JV5392_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7358248970(NAD 83)
 JV5392
 JV5392|---------------------------------------------------------------------|
 JV5392| PID    Reference Object                     Distance      Geod. Az  |
 JV5392|                                                           dddmmss.s |
 JV5392| CA9392 EVA RM 1                             24.780 METERS 18353     |
 JV5392| JV5375 WETHER                              APPROX. 1.4 KM 3192616.4 |
 JV5392|---------------------------------------------------------------------|
 JV5392
 JV5392                          SUPERSEDED SURVEY CONTROL
 JV5392
 JV5392  NAD 83(1986)-  39 16 51.14740(N)    076 27 56.55509(W) AD(       ) 2
 JV5392  NAD 27      -  39 16 50.76200(N)    076 27 57.70000(W) AD(       ) 2
 JV5392
 JV5392.Superseded values are not recommended for survey control.
 JV5392
 JV5392.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5392.See file dsdata.pdf to determine how the superseded data were derived.
 JV5392
 JV5392_MARKER: DS = TRIANGULATION STATION DISK
 JV5392_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5392_STAMPING: EVA 1934
 JV5392_MARK LOGO: CGS
 JV5392_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5392+STABILITY: SURFACE MOTION
 JV5392
 JV5392  HISTORY     - Date     Condition        Report By
 JV5392  HISTORY     - 1934     MONUMENTED       CGS
 JV5392  HISTORY     - 1974     MARK NOT FOUND   MDDNR
 JV5392  HISTORY     - 19950725 MARK NOT FOUND   USPSQD
 JV5392
 JV5392                          STATION DESCRIPTION
 JV5392
 JV5392'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5392'ON SOUTHERN SHORE OF BACK RIVER, ALMOST DUE S ACROSS RIVER FROM
 JV5392'COX POINT.  STATION IS 150 FEET FROM LARGE YELLOW HOUSE, AND 18
 JV5392'FEET FROM EDGE OF BLUFF ABOUT 12 FEET HIGH.
 JV5392'
 JV5392'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5392'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5392'
 JV5392'REFERENCE MARK IS 81.3 FEET S OF STATION AND 3 FEET FROM NE
 JV5392'CORNER OF CHICKEN YARD FENCE.
 JV5392
 JV5392                          STATION RECOVERY (1974)
 JV5392
 JV5392'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GH)
 JV5392'EVA 1934 NOT RECOVD.
 JV5392'
 JV5392'EVA NO1 1934 NOT RECOVD.
 JV5392'
 JV5392'STA. AND RM. NOT RECOVD. HSE MENTIONED HAS BEEN TORN DOWN.  AREA
 JV5392'IS NOW COMMERCIAL WITH LARGE TRUCKS PARKING ON LOT.  STA MAY
 JV5392'STILL BE RECOVERABLE.
 JV5392
 JV5392                          STATION RECOVERY (1995)
 JV5392
 JV5392'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5392'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP4248 ***********************************************************************
 DP4248  DESIGNATION -  EVANS
 DP4248  PID         -  DP4248
 DP4248  STATE/COUNTY-  MD/ANNE ARUNDEL
 DP4248  COUNTRY     -  US
 DP4248  USGS QUAD   -  SOUTH RIVER (2016)
 DP4248
 DP4248                         *CURRENT SURVEY CONTROL
 DP4248  ______________________________________________________________________
 DP4248* NAD 83(1986) POSITION- 38 54 14.91   (N) 076 33 36.52   (W)   HD_HELD1
 DP4248* NAVD 88 ORTHO HEIGHT -    36.083 (meters)      118.38  (feet) ADJUSTED
 DP4248  ______________________________________________________________________
 DP4248  GEOID HEIGHT    -        -33.311 (meters)                     GEOID18
 DP4248  DYNAMIC HEIGHT  -         36.062 (meters)      118.31  (feet) COMP
 DP4248  MODELED GRAVITY -    980,064.5   (mgal)                       NAVD 88
 DP4248
 DP4248  VERT ORDER      -  FIRST     CLASS II
 DP4248
 DP4248.The horizontal coordinates were determined by differentially corrected
 DP4248.hand held GPS observations or other comparable positioning techniques
 DP4248.and have an estimated accuracy of +/- 3 meters.
 DP4248
 DP4248.The orthometric height was determined by differential leveling and
 DP4248.adjusted by the NATIONAL GEODETIC SURVEY
 DP4248.in November 2014.
 DP4248
 DP4248.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP4248.GEOID18 height accuracy estimate available here.
 DP4248
 DP4248.Click photographs - Photos may exist for this station.
 DP4248
 DP4248.The dynamic height is computed by dividing the NAVD 88
 DP4248.geopotential number by the normal gravity value computed on the
 DP4248.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP4248.degrees latitude (g = 980.6199 gals.).
 DP4248
 DP4248.The modeled gravity was interpolated from observed gravity values.
 DP4248
 DP4248;                    North         East    Units  Estimated Accuracy
 DP4248;SPC MD       -   137,457.0     438,152.4     MT  (+/- 3 meters HH1 GPS) 
 DP4248
 DP4248_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6471807296(NAD 83)
 DP4248
 DP4248                          SUPERSEDED SURVEY CONTROL
 DP4248
 DP4248  NAVD 88 (11/04/14)   36.083  (m)          118.38   (f) SUPERSEDED  1 2
 DP4248  NAVD 88 (08/27/14)   36.083  (m)          118.38   (f) SUPERSEDED  1 2
 DP4248
 DP4248.Superseded values are not recommended for survey control.
 DP4248
 DP4248.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DP4248.See file dsdata.pdf to determine how the superseded data were derived.
 DP4248
 DP4248_MARKER: F = FLANGE-ENCASED ROD
 DP4248_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DP4248_STAMPING: EVANS 2014
 DP4248_MARK LOGO: NGS
 DP4248_PROJECTION: FLUSH
 DP4248_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP4248_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP4248_ROD/PIPE-DEPTH: 17.1 meters
 DP4248_SLEEVE-DEPTH  : 1.22 meters
 DP4248
 DP4248  HISTORY     - Date     Condition        Report By
 DP4248  HISTORY     - 20140613 MONUMENTED       NGS
 DP4248
 DP4248                          STATION DESCRIPTION
 DP4248
 DP4248'DESCRIBED BY NATIONAL GEODETIC SURVEY 2014 (DBC)
 DP4248'THE STATION IS LOCATED ABOUT 14.2 KM (8.8 MI) NORTH OF DEALE, 10.1 KM
 DP4248'(6.3 MI) SOUTHWEST OF ANNAPOLIS AND IN THE TOWN OF SOUTH RIVER, MD.
 DP4248'OWNERSHIP--ROAD RIGHT-OF-WAY.
 DP4248'
 DP4248'TO REACH FROM THE INTERSECTION OF MD-214 (CENTRAL AVE) AND MD-468
 DP4248'(MUDDY CREEK ROAD), GO 1.0 MI (1.6 KM) SOUTH ALONG MD-468 TO SOUTH
 DP4248'RIVER CLUBHOUSE ROAD, ON YOUR RIGHT, THENCE WEST ON SOUTH RIVER
 DP4248'CLUBHOUSE ROAD FOR 0.1 MI (0.2 KM) TO THE STATION ON THE LEFT IN FRONT
 DP4248'OF THE BARN LOCATED AT 349 SOUTH RIVER CLUBHOUSE ROAD.
 DP4248'
 DP4248'NOTE-ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH (13 CM) LOGO CAP.
 DP4248'
 DP4248'IT IS 18.35 M (60.2 FT) WEST OF A POWER LINE POLE NUMBERED 814652, 6.2
 DP4248'M (20.3 FT) SOUTHWEST OF THE NORTHWEST CORNER OF BARN, 4.9 M (16.1 FT)
 DP4248'SOUTH OF THE CENTERLINE OF THE ROAD AND 0.3 M (1.0 FT) NORTH OF A
 DP4248'WOODEN FENCE AND ABOUT 0.04 M (0.0 FT) LOWER THAN THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5083 ***********************************************************************
 JV5083  DESIGNATION -  EVANS LOWER CHESTER RIVER
 JV5083  PID         -  JV5083
 JV5083  STATE/COUNTY-  MD/QUEEN ANNES
 JV5083  COUNTRY     -  US
 JV5083  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5083
 JV5083                         *CURRENT SURVEY CONTROL
 JV5083  ______________________________________________________________________
 JV5083* NAD 83(1991) POSITION- 39 05 55.13012(N) 076 08 10.74727(W)   ADJUSTED
 JV5083* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5083  ______________________________________________________________________
 JV5083  GEOID HEIGHT    -        -33.544 (meters)                     GEOID18
 JV5083  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 JV5083  HORZ ORDER      -  THIRD
 JV5083
 JV5083.The horizontal coordinates were established by classical geodetic methods
 JV5083.and adjusted by the National Geodetic Survey in January 1992.
 JV5083
 JV5083.The orthometric height was scaled from a topographic map.
 JV5083
 JV5083.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5083.GEOID18 height accuracy estimate available here.
 JV5083
 JV5083.Click photographs - Photos may exist for this station.
 JV5083
 JV5083.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5083
 JV5083. The following values were computed from the NAD 83(1991) position.
 JV5083
 JV5083;                    North         East     Units Scale Factor Converg.
 JV5083;SPC MD       -   159,310.591   474,709.308   MT  0.99995739   +0 32 31.5
 JV5083;SPC MD       -   522,671.50  1,557,442.12   sFT  0.99995739   +0 32 31.5
 JV5083;UTM  18      - 4,328,338.209   401,739.615   MT  0.99971888   -0 43 00.1
 JV5083
 JV5083!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5083!SPC MD       -   1.00000530  x   0.99995739  =   0.99996269
 JV5083!UTM  18      -   1.00000530  x   0.99971888  =   0.99972418
 JV5083
 JV5083:                Primary Azimuth Mark                     Grid Az
 JV5083:SPC MD       -  SPANIARD PT 2 UPPER                      231 45 18.5
 JV5083:UTM  18      -  SPANIARD PT 2 UPPER                      233 00 50.1
 JV5083
 JV5083_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0173928338(NAD 83)
 JV5083
 JV5083|---------------------------------------------------------------------|
 JV5083| PID    Reference Object                     Distance      Geod. Az  |
 JV5083|                                                           dddmmss.s |
 JV5083| JV5012 WESTCOTTS WINDMILL                  APPROX. 2.7 KM 0224227.5 |
 JV5083| JV5032 SPANIARD PT 2 UPPER                 APPROX. 0.9 KM 2321750.0 |
 JV5083|---------------------------------------------------------------------|
 JV5083
 JV5083                          SUPERSEDED SURVEY CONTROL
 JV5083
 JV5083  NAD 83(1986)-  39 05 55.12448(N)    076 08 10.75919(W) AD(       ) 3
 JV5083  NAD 27      -  39 05 54.73000(N)    076 08 11.93500(W) AD(       ) 3
 JV5083  USSD        -  39 05 55.12200(N)    076 08 11.74200(W) AD(       ) 3
 JV5083
 JV5083.Superseded values are not recommended for survey control.
 JV5083
 JV5083.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5083.See file dsdata.pdf to determine how the superseded data were derived.
 JV5083
 JV5083_MARKER: N = NAIL
 JV5083_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5083_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5083+STABILITY: SURFACE MOTION
 JV5083
 JV5083  HISTORY     - Date     Condition        Report By
 JV5083  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5083  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV5083
 JV5083                          STATION DESCRIPTION
 JV5083
 JV5083'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5083'STATION IS ON THE SOUTHEASTERN SHORE OF CHESTER RIVER, ON UPPER
 JV5083'SPANIARD POINT, ABOUT 5/8 MILE S OF CLIFFS LANDING, AND 1/8 MILE
 JV5083'NE OF SPANIARD WHARF, ON MARSHLAND, ABOUT 1 FOOT ABOVE HIGH WATER,
 JV5083'10 YARDS N OF SHORE, AND 200 YARDS E OF END OF SPANIARD WHARF.
 JV5083'
 JV5083'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5083'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5083'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5083'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  THE
 JV5083'SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE, BURIED
 JV5083'WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5083'
 JV5083'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5083'FOLLOWS--LONE 6-INCH WALNUT TREE, 200 YARDS, S 26 DEG 04 MIN W. S
 JV5083'GABLE OF FISHING SHACK NEAR SHORE, 1/8 MILE, S 55 DEG 47
 JV5083'MIN W.  SPANIARD WHARF 1896, 2.49 METERS (8.17 FEET), S 44 DEG 36
 JV5083'MIN W.  RIGHT TANGENT PILES AT END OF SPANIARD WHARF, 250 YARDS,
 JV5083'S 87 DEG 10 MIN W. N CHIMNEY OF HOUSE, 1-1/2 MILES, N 70 DEG 57 MIN W.
 JV5083'W CHIMNEY OF HOUSE, 1-1/8 MILES, N 48 DEG 00 MIN W. CHIMNEY
 JV5083'OF MARTINS CABIN, 3/4 MILE, N 40 DEG 53 MIN W. N GABLE OF CLIFFS
 JV5083'LANDING HOUSE, 3/4 MILE, N 25 DEG 42 MIN W. E CHIMNEY OF HOUSE, 7/8
 JV5083'MILE, N 12 DEG 45 MIN W. N GABLE OF BARN, 1-3/4 MILES, N 16 DEG
 JV5083'10 MIN E.  E GABLE OF BARN, 1-1/8 MILES, N 48 DEG 18 MIN E. N GABLE
 JV5083'OF BARN, 2-1/4 MILES, N 57 DEG 50 MIN E. E GABLE OF BARN,
 JV5083'1-1/4 MILES, N 88 DEG 26 MIN E.
 JV5083
 JV5083                          STATION RECOVERY (1939)
 JV5083
 JV5083'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5083'STATION SEARCHED FOR BUT NOT FOUND.  SAID BY LOCAL FISHERMEN TO
 JV5083'HAVE BEEN WASHED OUT.  THE BEARINGS TO VARIOUS OBJECTS, MENTIONED
 JV5083'IN THE ORIGINAL DESCRIPTION, WERE NOT CHECKED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4970 ***********************************************************************
 JV4970  DESIGNATION -  EVANS UPPER CHESTER RIVER
 JV4970  PID         -  JV4970
 JV4970  STATE/COUNTY-  MD/QUEEN ANNES
 JV4970  COUNTRY     -  US
 JV4970  USGS QUAD   -  CHESTERTOWN (2017)
 JV4970
 JV4970                         *CURRENT SURVEY CONTROL
 JV4970  ______________________________________________________________________
 JV4970* NAD 83(1991) POSITION- 39 10 44.33338(N) 076 02 26.38593(W)   ADJUSTED
 JV4970* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4970  ______________________________________________________________________
 JV4970  GEOID HEIGHT    -        -33.517 (meters)                     GEOID18
 JV4970  LAPLACE CORR    -         -2.28  (seconds)                    DEFLEC18
 JV4970  HORZ ORDER      -  THIRD
 JV4970
 JV4970.The horizontal coordinates were established by classical geodetic methods
 JV4970.and adjusted by the National Geodetic Survey in January 1992.
 JV4970
 JV4970.The orthometric height was scaled from a topographic map.
 JV4970
 JV4970.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4970.GEOID18 height accuracy estimate available here.
 JV4970
 JV4970.Click photographs - Photos may exist for this station.
 JV4970
 JV4970.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4970
 JV4970. The following values were computed from the NAD 83(1991) position.
 JV4970
 JV4970;                    North         East     Units Scale Factor Converg.
 JV4970;SPC MD       -   168,310.921   482,889.634   MT  0.99996381   +0 36 07.6
 JV4970;SPC MD       -   552,200.08  1,584,280.41   sFT  0.99996381   +0 36 07.6
 JV4970;UTM  18      - 4,337,154.384   410,113.646   MT  0.99969948   -0 39 26.9
 JV4970
 JV4970!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4970!SPC MD       -   1.00000530  x   0.99996381  =   0.99996911
 JV4970!UTM  18      -   1.00000530  x   0.99969948  =   0.99970477
 JV4970
 JV4970:                Primary Azimuth Mark                     Grid Az
 JV4970:SPC MD       -  ROLPHS                                   147 58 56.1
 JV4970:UTM  18      -  ROLPHS                                   149 14 30.6
 JV4970
 JV4970_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1011337154(NAD 83)
 JV4970
 JV4970|---------------------------------------------------------------------|
 JV4970| PID    Reference Object                     Distance      Geod. Az  |
 JV4970|                                                           dddmmss.s |
 JV4970| JV4963 ROLPHS                              APPROX. 0.7 KM 1483503.7 |
 JV4970|---------------------------------------------------------------------|
 JV4970
 JV4970                          SUPERSEDED SURVEY CONTROL
 JV4970
 JV4970  NAD 83(1986)-  39 10 44.32582(N)    076 02 26.39893(W) AD(       ) 3
 JV4970  NAD 27      -  39 10 43.93600(N)    076 02 27.59300(W) AD(       ) 3
 JV4970  USSD        -  39 10 44.37400(N)    076 02 27.35300(W) AD(       ) 3
 JV4970
 JV4970.Superseded values are not recommended for survey control.
 JV4970
 JV4970.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4970.See file dsdata.pdf to determine how the superseded data were derived.
 JV4970
 JV4970_MARKER: N = NAIL
 JV4970_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4970_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4970
 JV4970  HISTORY     - Date     Condition        Report By
 JV4970  HISTORY     - 1909     MONUMENTED       CGS
 JV4970
 JV4970                          STATION DESCRIPTION
 JV4970
 JV4970'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JV4970'STATION IS ON THE EASTERN SIDE OF CHESTER RIVER, ON A MARSHY
 JV4970'POINT, THE SECOND POINT UPRIVER FROM ROLPHS WHARF, ABOUT 4
 JV4970'METERS INSIDE OF HIGH-WATER MARK.  THE STATION IS MARKED BY A
 JV4970'ROUND BLACK BOTTLE BURIED 3.3 FEET AND A NAIL IN CONCRETE
 JV4970'SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE TOP OF A 4-INCH
 JV4970'DRAINTILE PIPE AT THE SURFACE OF THE GROUND.  THE REFERENCE
 JV4970'MARK IS THE CENTER OF NECK OF A WHITE QUART BOTTLE BURIED 3.3
 JV4970'FEET AND A NAIL IN CONCRETE IN THE TOP OF A 3-INCH DRAINTILE
 JV4970'AT THE SURFACE OF THE GROUND.  REFERENCE MARK IS 8.74 METERS
 JV4970'(28.67 FEET) FROM THE STATION S 83 DEG 13 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7209 ***********************************************************************
 JV7209  DESIGNATION -  EVERLY
 JV7209  PID         -  JV7209
 JV7209  STATE/COUNTY-  MD/FREDERICK
 JV7209  COUNTRY     -  US
 JV7209  USGS QUAD   -  BLUE RIDGE SUMMIT (2019)
 JV7209
 JV7209                         *CURRENT SURVEY CONTROL
 JV7209  ______________________________________________________________________
 JV7209* NAD 83(2011) POSITION- 39 41 19.24129(N) 077 29 57.14496(W)   ADJUSTED
 JV7209* NAD 83(2011) ELLIP HT-   453.538 (meters)        (06/27/12)   ADJUSTED
 JV7209* NAD 83(2011) EPOCH   -  2010.00
 JV7209* NAVD 88 ORTHO HEIGHT -   487.0   (meters)     1598.    (feet) GPS OBS
 JV7209  ______________________________________________________________________
 JV7209  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7209  GEOID HEIGHT    -        -33.780 (meters)                     GEOID93
 JV7209  GEOID HEIGHT    -        -33.487 (meters)                     GEOID18
 JV7209  NAD 83(2011) X  -  1,063,911.176 (meters)                     COMP
 JV7209  NAD 83(2011) Y  - -4,798,678.854 (meters)                     COMP
 JV7209  NAD 83(2011) Z  -  4,051,735.440 (meters)                     COMP
 JV7209  LAPLACE CORR    -          5.50  (seconds)                    DEFLEC18
 JV7209
 JV7209  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7209  Standards:
 JV7209         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7209            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7209  -------------------------------------------------------------------
 JV7209  NETWORK    2.41   2.72           0.98   0.99   1.39     -0.00037570
 JV7209  -------------------------------------------------------------------
 JV7209  Click here for local accuracies and other accuracy information.
 JV7209
 JV7209.The horizontal coordinates were established by GPS observations
 JV7209.and adjusted by the National Geodetic Survey in June 2012.
 JV7209
 JV7209.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7209.been affixed to the stable North American tectonic plate. See 
 JV7209.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7209
 JV7209.The horizontal coordinates are valid at the epoch date displayed above
 JV7209.which is a decimal equivalence of Year/Month/Day.
 JV7209
 JV7209.The orthometric height was determined by GPS observations and a
 JV7209.high-resolution geoid model.
 JV7209
 JV7209.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7209.GEOID18 height accuracy estimate available here.
 JV7209
 JV7209.Click photographs - Photos may exist for this station.
 JV7209
 JV7209.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7209
 JV7209.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7209
 JV7209.The ellipsoidal height was determined by GPS observations
 JV7209.and is referenced to NAD 83.
 JV7209
 JV7209. The following values were computed from the NAD 83(2011) position.
 JV7209
 JV7209;                    North         East     Units Scale Factor Converg.
 JV7209;SPC MD       -   224,580.946   357,175.885   MT  1.00005048   -0 18 47.9
 JV7209;SPC MD       -   736,812.65  1,171,834.55   sFT  1.00005048   -0 18 47.9
 JV7209;SPC PA S     -    39,486.520   621,514.116   MT  1.00004726   +0 09 45.8
 JV7209;SPC PA S     -   129,548.69  2,039,084.23   sFT  1.00004726   +0 09 45.8
 JV7209;UTM  18      - 4,396,190.420   285,690.127   MT  1.00016549   -1 35 47.9
 JV7209
 JV7209!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7209!SPC MD       -   0.99992885  x   1.00005048  =   0.99997933
 JV7209!SPC PA S     -   0.99992885  x   1.00004726  =   0.99997611
 JV7209!UTM  18      -   0.99992885  x   1.00016549  =   1.00009433
 JV7209
 JV7209_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8569096190(NAD 83)
 JV7209
 JV7209                          SUPERSEDED SURVEY CONTROL
 JV7209
 JV7209  NAD 83(2007)-  39 41 19.24145(N)    077 29 57.14573(W) AD(2002.00) 0
 JV7209  ELLIP H (02/10/07)  453.569  (m)                       GP(2002.00)    
 JV7209  ELLIP H (08/30/02)  453.577  (m)                       GP(       ) 4 2
 JV7209  NAD 83(1991)-  39 41 19.24071(N)    077 29 57.14594(W) AD(       ) 1
 JV7209  ELLIP H (02/09/94)  453.521  (m)                       GP(       ) 4 1
 JV7209
 JV7209.Superseded values are not recommended for survey control.
 JV7209
 JV7209.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7209.See file dsdata.pdf to determine how the superseded data were derived.
 JV7209
 JV7209_MARKER: DD = SURVEY DISK
 JV7209_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7209_STAMPING: EVERLY 1993
 JV7209_MARK LOGO: MD-021
 JV7209_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7209_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7209+STABILITY: SURFACE MOTION
 JV7209_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7209+SATELLITE: SATELLITE OBSERVATIONS - March 01, 2017
 JV7209
 JV7209  HISTORY     - Date     Condition        Report By
 JV7209  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7209  HISTORY     - 20031108 GOOD             NAGEL
 JV7209  HISTORY     - 20070530 GOOD             GEOCAC
 JV7209  HISTORY     - 20130614 GOOD             DEWDAV
 JV7209  HISTORY     - 20170301 GOOD             BASE9
 JV7209
 JV7209                          STATION DESCRIPTION
 JV7209
 JV7209'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7209'FROM THE INTERSECTION OF MD RTE 15 AND MD RTE 77 IN THURMONT, MD,
 JV7209'PROCEED WEST ON RTE 77 4.5 MILES (7.2 KM) TO THE INTERSECTION OF MD
 JV7209'RTE 491. TURN RIGHT AND PROCEED NORTH ALONG RTE 491 4.3 MILES
 JV7209'(6.9 KM) TO WISE ROAD. TURN LEFT AND PROCEED NORTHWEST ALONG WISE
 JV7209'ROAD 0.2 MILES (0.3 KM) TO THE STATION ON THE LEFT. STATION IS 40
 JV7209'FEET (12.2 M) SOUTHEAST OF A FENCE CORNER, 13 FEET (4.0 M) SOUTHWEST
 JV7209'OF THE CENTERLINE OF WISE ROAD, 2 FEET (0.6 M) NORTHEAST OF A FENCE,
 JV7209'AND 70 FEET (21.3 M) WEST OF P.E. SYSTEM POWER POLE NO. 8. STATION IS
 JV7209'A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND CONCRETE MONUMENT SET
 JV7209'FLUSH WITH THE GROUND.
 JV7209
 JV7209                          STATION RECOVERY (2003)
 JV7209
 JV7209'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2003 (GEN)
 JV7209'RECOVERED IN GOOD CONDITION.
 JV7209
 JV7209                          STATION RECOVERY (2007)
 JV7209
 JV7209'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 JV7209'THE STATION AND AZIMUTH MARK FOUND IN GOOD CONDITION.
 JV7209
 JV7209                          STATION RECOVERY (2013)
 JV7209
 JV7209'RECOVERY NOTE BY DEWBERRY DAVIS 2013 (GDS)
 JV7209'RECOVERED IN GOOD CONDITION.
 JV7209
 JV7209                          STATION RECOVERY (2017)
 JV7209
 JV7209'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 JV7209'GPS OBSERVATIONS MAY BE PROBLEMATIC DURING LEAF ON WITH SOME TREE
 JV7209'OBSTRUCTIONS FROM SOUTH TO WEST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN5997 ***********************************************************************
 DN5997  DESIGNATION -  EW 4
 DN5997  PID         -  DN5997
 DN5997  STATE/COUNTY-  MD/CARROLL
 DN5997  COUNTRY     -  US
 DN5997  USGS QUAD   -  WESTMINSTER (2016)
 DN5997
 DN5997                         *CURRENT SURVEY CONTROL
 DN5997  ______________________________________________________________________
 DN5997* NAD 83(1986) POSITION- 39 35 07.3    (N) 076 58 37.6    (W)   HD_HELD2
 DN5997* NAVD 88 ORTHO HEIGHT -   213.498 (meters)      700.45  (feet) ADJUSTED
 DN5997  ______________________________________________________________________
 DN5997  GEOID HEIGHT    -        -32.241 (meters)                     GEOID18
 DN5997  DYNAMIC HEIGHT  -        213.388 (meters)      700.09  (feet) COMP
 DN5997  MODELED GRAVITY -    980,102.3   (mgal)                       NAVD 88
 DN5997
 DN5997  VERT ORDER      -  SECOND    CLASS II
 DN5997
 DN5997.The horizontal coordinates were established by autonomous hand held GPS
 DN5997.observations and have an estimated accuracy of +/- 10 meters.
 DN5997
 DN5997.The orthometric height was determined by differential leveling and
 DN5997.adjusted by the NATIONAL GEODETIC SURVEY
 DN5997.in June 2012.
 DN5997
 DN5997.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN5997.GEOID18 height accuracy estimate available here.
 DN5997
 DN5997.Click photographs - Photos may exist for this station.
 DN5997
 DN5997.The dynamic height is computed by dividing the NAVD 88
 DN5997.geopotential number by the normal gravity value computed on the
 DN5997.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN5997.degrees latitude (g = 980.6199 gals.).
 DN5997
 DN5997.The modeled gravity was interpolated from observed gravity values.
 DN5997
 DN5997;                    North         East    Units  Estimated Accuracy
 DN5997;SPC MD       -   212,993.      401,966.      MT  (+/- 10 meters HH2 GPS)
 DN5997
 DN5997_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3021183605(NAD 83)
 DN5997
 DN5997                          SUPERSEDED SURVEY CONTROL
 DN5997
 DN5997.No superseded survey control is available for this station.
 DN5997
 DN5997_MARKER: DB = BENCH MARK DISK
 DN5997_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 DN5997_SP_SET: BRIDGE WING WALL
 DN5997_STAMPING: EW-04 1969
 DN5997_MARK LOGO: MDBCSM
 DN5997_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DN5997_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DN5997+SATELLITE: SATELLITE OBSERVATIONS - April 12, 2015
 DN5997
 DN5997  HISTORY     - Date     Condition        Report By
 DN5997  HISTORY     - 1969     MONUMENTED       MDBCSM
 DN5997  HISTORY     - 20080131 GOOD             MDSHA
 DN5997  HISTORY     - 20150412 GOOD             RODCON
 DN5997
 DN5997                          STATION DESCRIPTION
 DN5997
 DN5997'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN5997'THE MARK IS LOCATED IN THE NORTHEAST SECTION OF WESTMINSTER.
 DN5997'
 DN5997'TO REACH THE MARK FROM THE MARYLAND ROUTE 140 BRIDGE OVER MARYLAND
 DN5997'ROUTE 27 IN WESTMINSTER, GO NORTHEAST ON MARYLAND ROUTE 27 FOR 0.65 MI
 DN5997'(1.0 KM) TO THE MARK ON THE RIGHT.
 DN5997'
 DN5997'IT IS SET IN THE TOP OF THE SOUTHEAST WING WALL OF THE MARYLAND ROUTE
 DN5997'27 BRIDGE OVER RAILROAD TRACKS, 28.2 FT (8.6 M) SOUTHEAST OF THE
 DN5997'CENTERLINE OF MARYLAND ROUTE 27 AND 8.5 FT (2.6 M) SOUTHEAST OF THE
 DN5997'FACE OF THE BRIDGE.
 DN5997
 DN5997                          STATION RECOVERY (2015)
 DN5997
 DN5997'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 DN5997'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN5999 ***********************************************************************
 DN5999  DESIGNATION -  EW 6
 DN5999  PID         -  DN5999
 DN5999  STATE/COUNTY-  MD/CARROLL
 DN5999  COUNTRY     -  US
 DN5999  USGS QUAD   -  WESTMINSTER (2016)
 DN5999
 DN5999                         *CURRENT SURVEY CONTROL
 DN5999  ______________________________________________________________________
 DN5999* NAD 83(1986) POSITION- 39 35 49.2    (N) 076 57 19.2    (W)   HD_HELD2
 DN5999* NAVD 88 ORTHO HEIGHT -   236.552 (meters)      776.09  (feet) ADJUSTED
 DN5999  ______________________________________________________________________
 DN5999  GEOID HEIGHT    -        -32.235 (meters)                     GEOID18
 DN5999  DYNAMIC HEIGHT  -        236.430 (meters)      775.69  (feet) COMP
 DN5999  MODELED GRAVITY -    980,103.6   (mgal)                       NAVD 88
 DN5999
 DN5999  VERT ORDER      -  SECOND    CLASS II
 DN5999
 DN5999.The horizontal coordinates were established by autonomous hand held GPS
 DN5999.observations and have an estimated accuracy of +/- 10 meters.
 DN5999
 DN5999.The orthometric height was determined by differential leveling and
 DN5999.adjusted by the NATIONAL GEODETIC SURVEY
 DN5999.in June 2012.
 DN5999
 DN5999.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN5999.GEOID18 height accuracy estimate available here.
 DN5999
 DN5999.Click photographs - Photos may exist for this station.
 DN5999
 DN5999.The dynamic height is computed by dividing the NAVD 88
 DN5999.geopotential number by the normal gravity value computed on the
 DN5999.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN5999.degrees latitude (g = 980.6199 gals.).
 DN5999
 DN5999.The modeled gravity was interpolated from observed gravity values.
 DN5999
 DN5999;                    North         East    Units  Estimated Accuracy
 DN5999;SPC MD       -   214,286.      403,837.      MT  (+/- 10 meters HH2 GPS)
 DN5999
 DN5999_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3211084856(NAD 83)
 DN5999
 DN5999                          SUPERSEDED SURVEY CONTROL
 DN5999
 DN5999.No superseded survey control is available for this station.
 DN5999
 DN5999_MARKER: DB = BENCH MARK DISK
 DN5999_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DN5999_SP_SET: HEADWALL
 DN5999_STAMPING: E-W-06 1969
 DN5999_MARK LOGO: MDBCSM
 DN5999_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN5999+STABILITY: SURFACE MOTION
 DN5999_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DN5999+SATELLITE: SATELLITE OBSERVATIONS - January 31, 2008
 DN5999
 DN5999  HISTORY     - Date     Condition        Report By
 DN5999  HISTORY     - 1969     MONUMENTED       MDBCSM
 DN5999  HISTORY     - 20080131 GOOD             MDSHA
 DN5999
 DN5999                          STATION DESCRIPTION
 DN5999
 DN5999'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN5999'THE MARK IS LOCATED ABOUT 5.8 MI (9.3 KM) SOUTHWEST OF MANCHESTER, 5.6
 DN5999'MI (9.0 KM) WEST OF HAMPSTEAD AND 2.6 MI (4.2 KM) NORTHEAST OF
 DN5999'WESTMINSTER.
 DN5999'
 DN5999'TO REACH THE MARK FROM THE MARYLAND ROUTE 27 AND MAIN STREET
 DN5999'INTERSECTION IN WESTMINSTER, GO NORTHEAST ALONG MARYLAND ROUTE 27 FOR
 DN5999'2.65 MI (4.3 KM) TO THE MARK ON THE RIGHT.
 DN5999'
 DN5999'IT IS 44.9 FT (13.7 M) SOUTHEAST OF THE CENTERLINE OF ROUTE 27, 148.5
 DN5999'FT (45.3 M) NORTHEAST OF THE PROJECTED CENTERLINE OF MARTIN DRIVE AND
 DN5999'SET IN THE TOP OF A L-SHAPED HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 GV3605 ***********************************************************************
 GV3605  DESIGNATION -  EWELL
 GV3605  PID         -  GV3605
 GV3605  STATE/COUNTY-  MD/SOMERSET
 GV3605  COUNTRY     -  US
 GV3605  USGS QUAD   -  EWELL (2016)
 GV3605
 GV3605                         *CURRENT SURVEY CONTROL
 GV3605  ______________________________________________________________________
 GV3605* NAD 83(1993) POSITION- 37 59 44.08493(N) 076 02 21.88981(W)   ADJUSTED
 GV3605* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 GV3605  ______________________________________________________________________
 GV3605  GEOID HEIGHT    -        -35.930 (meters)                     GEOID18
 GV3605  LAPLACE CORR    -         -1.75  (seconds)                    DEFLEC18
 GV3605  HORZ ORDER      -  FIRST
 GV3605
 GV3605.The horizontal coordinates were established by classical geodetic methods
 GV3605.and adjusted by the National Geodetic Survey in November 1994.
 GV3605
 GV3605.The orthometric height was scaled from a topographic map.
 GV3605
 GV3605.Significant digits in the geoid height do not necessarily reflect accuracy.
 GV3605.GEOID18 height accuracy estimate available here.
 GV3605
 GV3605.Click photographs - Photos may exist for this station.
 GV3605
 GV3605.The Laplace correction was computed from DEFLEC18 derived deflections.
 GV3605
 GV3605. The following values were computed from the NAD 83(1993) position.
 GV3605
 GV3605;                    North         East     Units Scale Factor Converg.
 GV3605;SPC MD       -    36,955.258   484,379.798   MT  1.00006689   +0 36 10.4
 GV3605;SPC MD       -   121,244.04  1,589,169.39   sFT  1.00006689   +0 36 10.4
 GV3605;SPC VA S     - 1,187,291.345 3,716,109.008   MT  1.00000540   +1 29 36.2
 GV3605;SPC VA S     - 3,895,305.02 12,191,934.30   sFT  1.00000540   +1 29 36.2
 GV3605;UTM  18      - 4,205,834.157   408,735.540   MT  0.99970258   -0 38 23.7
 GV3605
 GV3605!             -  Elev Factor  x  Scale Factor =   Combined Factor
 GV3605!SPC MD       -   1.00000553  x   1.00006689  =   1.00007242
 GV3605!SPC VA S     -   1.00000553  x   1.00000540  =   1.00001093
 GV3605!UTM  18      -   1.00000553  x   0.99970258  =   0.99970811
 GV3605
 GV3605:                Primary Azimuth Mark                     Grid Az
 GV3605:SPC MD       -  EWELL RM 3 AZIMUTH                       173 14 47.4
 GV3605:SPC VA S     -  EWELL RM 3 AZIMUTH                       172 21 21.6
 GV3605:UTM  18      -  EWELL RM 3 AZIMUTH                       174 29 21.5
 GV3605
 GV3605_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0873505834(NAD 83)
 GV3605
 GV3605|---------------------------------------------------------------------|
 GV3605| PID    Reference Object                     Distance      Geod. Az  |
 GV3605|                                                           dddmmss.s |
 GV3605| DC9399 EWELL RM 1                           46.284 METERS 00819     |
 GV3605| DC9400 EWELL RM 2                           60.536 METERS 10435     |
 GV3605| DC9401 EWELL RM 3 AZIMUTH                                 1735057.8 |
 GV3605|---------------------------------------------------------------------|
 GV3605
 GV3605                          SUPERSEDED SURVEY CONTROL
 GV3605
 GV3605  NAD 83(1991)-  37 59 44.08383(N)    076 02 21.89444(W) AD(       ) 1
 GV3605  NAD 83(1986)-  37 59 44.08423(N)    076 02 21.91138(W) AD(       ) 1
 GV3605  NAD 27      -  37 59 43.64000(N)    076 02 23.14500(W) AD(       ) 1
 GV3605
 GV3605.Superseded values are not recommended for survey control.
 GV3605
 GV3605.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 GV3605.See file dsdata.pdf to determine how the superseded data were derived.
 GV3605
 GV3605_MARKER: DS = TRIANGULATION STATION DISK
 GV3605_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 GV3605_STAMPING: EWELL 1934
 GV3605_MARK LOGO: CGS
 GV3605_PROJECTION: PROJECTING 15 CENTIMETERS
 GV3605_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 GV3605+STABILITY: SURFACE MOTION
 GV3605_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 GV3605+SATELLITE: SATELLITE OBSERVATIONS - September 26, 2021
 GV3605
 GV3605  HISTORY     - Date     Condition        Report By
 GV3605  HISTORY     - 1934     MONUMENTED       CGS
 GV3605  HISTORY     - 1942     GOOD             CGS
 GV3605  HISTORY     - 1961     GOOD             CGS
 GV3605  HISTORY     - 20050720 GOOD             USPSQD
 GV3605  HISTORY     - 20210926 SEE DESCRIPTION  PROFLN
 GV3605
 GV3605                          STATION DESCRIPTION
 GV3605
 GV3605'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 GV3605'STATION IS ON THE N END OF SMITHS ISLAND, IN CHESAPEAKE BAY, AT
 GV3605'THE W EDGE OF THE TOWN OF EWELL, MARYLAND, ABOUT 0.3 MILE W OF
 GV3605'THE CHURCH, ON PROPERTY OWNED BY AARON T. EVANS, 157 FEET S OF
 GV3605'THE S SHORE LINE OF LEVINS CREEK, 74 FEET SSE OF THE SE CORNER OF
 GV3605'THE HOUSE, 27 FEET S OF A 24-INCH BLACK WALNUT TREE, 13 FEET S OF
 GV3605'S FENCE CORNER (PICKET FENCE), 37 FEET W OF 16-INCH PEAR TREE,
 GV3605'MARK PROJECTS 6 INCHES ABOVE GROUND.
 GV3605'
 GV3605'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 GV3605'DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 GV3605'
 GV3605'REFERENCE MARK NO.1 IS N OF STATION, PROJECTS 6 INCHES, 68 FEET
 GV3605'N OF NE CORNER OF OLD WASH HOUSE, 5 FEET S OF HIGH-WATER MARK,
 GV3605'121 FEET NE OF NE CORNER OF HOUSE, 37 FEET ENE OF 10-INCH BLACK
 GV3605'WALNUT TREE.
 GV3605'
 GV3605'REFERENCE MARK NO.2 IS SE OF STATION, PROJECTS 6 INCHES, IN ROW
 GV3605'OF SHRUBBERY ON E SIDE OF PROPERTY, 15 FEET W OF SW CORNER OF
 GV3605'SMALL POND, 157 FEET S OF SHORE LINE.
 GV3605'
 GV3605'REFERENCE MARK NO.3, THE AZIMUTH MARK, IS SSE OF STATION,
 GV3605'PROJECTS 8 INCHES ABOVE GROUND, ABOUT 1/2 MILE BY ROAD FROM THE
 GV3605'CHURCH IN EWELL, ON ROAD FROM EWELL TO ROADS POINT, 4 PACES W OF
 GV3605'CENTER LINE OF ROAD, 6 PACES N OF PATH TO HOUSE ON BEACH, 1 FOOT
 GV3605'NNW OF FENCE CORNER, 18 INCHES W OF DRAIN DITCH.
 GV3605'
 GV3605'A 64-FOOT TOWER IS NECESSARY.
 GV3605
 GV3605                          STATION RECOVERY (1942)
 GV3605
 GV3605'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 GV3605'THE FOLLOWING DISCREPANCY WAS NOTED IN THE FIELD WITH THE ORIGINAL
 GV3605'DESCRIPTION--
 GV3605'
 GV3605'(1) REFERENCE MARK NO.1 IS LOCATED 161.82 FEET N OF THE STATION,
 GV3605'NOT 151.85 FEET.
 GV3605'
 GV3605'THE STATION IS LOCATED ON THE N END OF SMITHS ISLAND ON THE
 GV3605'W EDGE OF THE TOWN OF EWELL, ABOUT 0.3 MILE W OF THE CHURCH, ON
 GV3605'PROPERTY OWNED BY AARON T. EVANS, 157 FEET S OF THE S SHORE LINE
 GV3605'OF LEVINS CREEK, 74 FEET SE OF THE SE CORNER OF EVANS HOUSE, 27
 GV3605'FEET S OF A 26-INCH BLACK WALNUT TREE, 13 FEET S OF THE SE FENCE
 GV3605'CORNER, 37 FEET W OF A 16-INCH PEAR TREE, AND IN A CLUMP OF FIG
 GV3605'BUSHES.
 GV3605'
 GV3605'THE STATION IS A BRONZE DISK, STAMPED EWELL 1934, SET IN THE
 GV3605'TOP OF A 10-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 6 INCHES
 GV3605'ABOVE THE GROUND.  THE MARK IS IN GOOD CONDITION.
 GV3605'
 GV3605'REFERENCE MARK NO.1 IS LOCATED 161.82 FEET N OF THE STATION, 68
 GV3605'FEET N OF THE NE CORNER OF THE OLD WASHHOUSE, 5 FEET S OF THE
 GV3605'RIP RAP BULKHEAD AT THE HIGH-WATER LINE, 125 FEET NE OF THE NE
 GV3605'CORNER OF THE EVANS HOUSE, AND 37 FEET NE OF A 12-INCH BLACK
 GV3605'WALNUT TREE.  THE MARK IS A BRONZE DISK, WITH THE ARROW POINTING
 GV3605'TOWARD THE STATION, STAMPED EWELL 1934 NO.1 SET IN THE TOP OF A
 GV3605'10-INCH SQUARE CONCRETE MONUMENT, WHICH PROJECTS 6 INCHES ABOVE
 GV3605'THE GROUND.  THE MARK IS IN GOOD CONDITION.
 GV3605'
 GV3605'REFERENCE MARK NO.2 IS LOCATED 198.61 FEET SE OF THE STATION,
 GV3605'15 FEET W OF THE SW CORNER OF A SMALL POND, IN A ROW OF BUSHES
 GV3605'WHICH LINES THE FIELD, AND 157 FEET S OF THE SHORE LINE.  THE
 GV3605'MARK IS A BRONZE DISK, WITH THE ARROW POINTING TOWARD THE STATION,
 GV3605'STAMPED EWELL 1934 NO.2, SET IN THE TOP OF A 10-INCH SQUARE
 GV3605'CONCRETE MONUMENT, WHICH EXTENDS 6 INCHES ABOVE THE GROUND.  THE
 GV3605'MARK IS IN GOOD CONDITION.
 GV3605'
 GV3605'REFERENCE MARK NO.3 (THE AZIMUTH MARK) IS LOCATED 1/4 MILE SE OF
 GV3605'THE STATION ABOUT 1/2 MILE FROM THE CHURCH IN EWELL ON THE ROAD TO
 GV3605'RHODES POINT, 13 FEET W OF THE CENTER LINE OF THE ROAD, 14 FEET
 GV3605'N OF THE PATH TO A HOUSE ON THE BEACH, 1 FOOT NW OF A FENCE
 GV3605'CORNER, AND 18 INCHES W OF A DITCH.  THE MARK IS A BRONZE DISK,
 GV3605'WITH THE ARROW POINTING TOWARD THE STATION, STAMPED EWELL 1934
 GV3605'NO.3, SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT,
 GV3605'WHICH EXTENDS 6 INCHES ABOVE THE GROUND.  THE MARK IS IN GOOD
 GV3605'CONDITION.
 GV3605
 GV3605                          STATION RECOVERY (1961)
 GV3605
 GV3605'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 GV3605'STATION RECOVERED AS DESCRIBED IN THE RECOVERY NOTE OF W.D.P. IN
 GV3605'1942.  THE DESCRIPTION IS ADEQUATE.
 GV3605
 GV3605                          STATION RECOVERY (2005)
 GV3605
 GV3605'RECOVERY NOTE BY US POWER SQUADRON 2005 (EEC)
 GV3605'RECOVERED IN GOOD CONDITION.
 GV3605
 GV3605                          STATION RECOVERY (2021)
 GV3605
 GV3605'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 GV3605'THE POSITIONS OF THE STATION AND REFERENCE MARK 1 ARE IN THICK WOODS,
 GV3605'NOT SERIOUSLY SEARCHED FOR THIS DATE, NOR WAS REFERENCE MARK 3, THE
 GV3605'AZIMUTH MARK THE STANDARD SCHEDULE OF THE FERRY FROM CRISFIELD TO
 GV3605'SMITH ISLAND DOES NOT ALLOW MUCH TIME FOR SEARCHING, UNLESS ONE STAYS
 GV3605'OVERNIGHT.
 GV3605'
 GV3605'RM 2 WAS FOUND OBVIOUS ON THE EAST SIDE OF A POWER COMPANY BUILDING.
 GV3605'IT LOOKS LIKE IT WAS DISTURBED DURING CONSTRUCTION OF THE BUILDING -
 GV3605'THE ARROW NO LONGER POINTS TOWARD THE STATION.  IT COULD STILL HELP
 GV3605'WITH RECOVERING THE STATION HOWEVER.  ONE COULD USE THE WIDTH OF THE
 GV3605'BUILDING AS PART OF THE DISTANCE BETWEEN THE REFERENCE MARK AND THE
 GV3605'STATION SO AS TO HAVE SOME IDEA WHERE TO LOOK FOR THE STATION IN THE
 GV3605'THICK WOODS.
 GV3605'
 GV3605'OWNERSHIP WAS NOT DETERMINED.  REMAINS OF THE EVANS HOUSE AND THE
 GV3605'PICKET FENCE MAY STILL EXIST BUT NOT SEEN IN A BRIEF SEARCH FOR THE
 GV3605'STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6516 ***********************************************************************
 JV6516  DESIGNATION -  EXPRESS RESET
 JV6516  PID         -  JV6516
 JV6516  STATE/COUNTY-  MD/BALTIMORE
 JV6516  COUNTRY     -  US
 JV6516  USGS QUAD   -  MIDDLE RIVER (2016)
 JV6516
 JV6516                         *CURRENT SURVEY CONTROL
 JV6516  ______________________________________________________________________
 JV6516* NAD 83(1991) POSITION- 39 21 36.18796(N) 076 28 28.51624(W)   ADJUSTED
 JV6516* NAD 83(1991) ELLIP HT-     9.557 (meters)        (01/27/92)   ADJUSTED
 JV6516* NAVD 88 ORTHO HEIGHT -    42.39  (meters)      139.1   (feet) RESET
 JV6516  ______________________________________________________________________
 JV6516  GEOID HEIGHT    -        -32.912 (meters)                     GEOID18
 JV6516  NAD 83(1991) X  -  1,154,901.820 (meters)                     COMP
 JV6516  NAD 83(1991) Y  - -4,801,130.362 (meters)                     COMP
 JV6516  NAD 83(1991) Z  -  4,023,308.389 (meters)                     COMP
 JV6516  LAPLACE CORR    -         -3.59  (seconds)                    DEFLEC18
 JV6516  HORZ ORDER      -  THIRD
 JV6516  VERT ORDER      -  THIRD
 JV6516  ELLP ORDER      -  FOURTH    CLASS I
 JV6516
 JV6516.The horizontal coordinates were established by classical geodetic methods
 JV6516.and adjusted by the National Geodetic Survey in January 1992.
 JV6516
 JV6516.The orthometric height was computed from unverified reset data.
 JV6516
 JV6516.No vertical observational check was made to the station.
 JV6516
 JV6516.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6516.GEOID18 height accuracy estimate available here.
 JV6516
 JV6516.Click photographs - Photos may exist for this station.
 JV6516
 JV6516.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6516
 JV6516.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6516
 JV6516.The ellipsoidal height was determined by GPS observations
 JV6516.and is referenced to NAD 83.
 JV6516
 JV6516. The following values were computed from the NAD 83(1991) position.
 JV6516
 JV6516;                    North         East     Units Scale Factor Converg.
 JV6516;SPC MD       -   188,107.750   445,282.085   MT  0.99998550   +0 19 47.2
 JV6516;SPC MD       -   617,150.18  1,460,896.31   sFT  0.99998550   +0 19 47.2
 JV6516;UTM  18      - 4,357,770.092   372,959.739   MT  0.99979871   -0 56 07.1
 JV6516
 JV6516!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6516!SPC MD       -   0.99999850  x   0.99998550  =   0.99998400
 JV6516!UTM  18      -   0.99999850  x   0.99979871  =   0.99979721
 JV6516
 JV6516:                Primary Azimuth Mark                     Grid Az
 JV6516:SPC MD       -  EXPRESS AZ MK                            315 14 05.9
 JV6516:UTM  18      -  EXPRESS AZ MK                            316 30 00.2
 JV6516
 JV6516_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7295957770(NAD 83)
 JV6516
 JV6516|---------------------------------------------------------------------|
 JV6516| PID    Reference Object                     Distance      Geod. Az  |
 JV6516|                                                           dddmmss.s |
 JV6516| JV0442 EXPRESS RM 1                         24.209 METERS 02741     |
 JV6516| JV6517 EXPRESS RM 3                        107.659 METERS 14841     |
 JV6516| JV0438 EXPRESS RM 2                         16.661 METERS 20754     |
 JV6516| JV6518 EXPRESS RM 4                         89.487 METERS 23318     |
 JV6516| JV6645 EXPRESS AZ MK                                      3153353.1 |
 JV6516|---------------------------------------------------------------------|
 JV6516
 JV6516                          SUPERSEDED SURVEY CONTROL
 JV6516
 JV6516  NAD 83(1986)-  39 21 36.18328(N)    076 28 28.52486(W) AD(       ) 3
 JV6516  NAD 27      -  39 21 35.79490(N)    076 28 29.66240(W) AD(       ) 3
 JV6516  NGVD 29 (11/18/05)   42.63   (m)          139.9    (f) RESET       3  
 JV6516  NGVD 29              42.63   (m)          139.9    (f) LEVELING    3  
 JV6516
 JV6516.Superseded values are not recommended for survey control.
 JV6516
 JV6516.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6516.See file dsdata.pdf to determine how the superseded data were derived.
 JV6516
 JV6516_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6516_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6516_STAMPING: EXPRESS 1958 1984
 JV6516_MARK LOGO: NGS
 JV6516_PROJECTION: RECESSED 30 CENTIMETERS
 JV6516_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6516_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6516+STABILITY: SURFACE MOTION
 JV6516_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6516+SATELLITE: SATELLITE OBSERVATIONS - 1984
 JV6516
 JV6516  HISTORY     - Date     Condition        Report By
 JV6516  HISTORY     - 1984     MONUMENTED       NGS
 JV6516  HISTORY     - 20040302 MARK NOT FOUND   URS
 JV6516
 JV6516                          STATION DESCRIPTION
 JV6516
 JV6516'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6516'5.5 KM (3.40 MI) NE FROM GOLDEN RING.
 JV6516'FROM THE INTERSECTION OF INTERSTATE HIGHWAY 695 AND STATE HIGHWAY 7
 JV6516'(PHILADELPHIA ROAD), GO NORTHEAST ON STATE HIGHWAY 7
 JV6516'(PHILADELPHIA ROAD) FOR 3.3 KM (2.05 MI) TO A ROAD LEFT.  TURN LEFT
 JV6516'AND GO NORTHWEST ON KING AVENUE FOR 1.2 KM (0.75 MI) TO THE MARK ON
 JV6516'THE RIGHT, 53.94 M (177.0 FT) NORTH FROM THE CENTER OF KING AVENUE,
 JV6516'83.26 M (273.2 FT) NORTHEAST FROM A POWERLINE POLE NUMBERED 233786,
 JV6516'107.59 M (353.0 FT) NORTHWEST FROM A POWERLINE POLE NUMBERED 95350
 JV6516'AND 0.9 M (3.0 FT) SOUTH FROM A SMALL BUSH.
 JV6516'THE MARK IS 0.58 METERS  SW FROM  A WITNESS POST
 JV6516'THE MARK IS 0.3 M ABOVE .
 JV6516
 JV6516                          STATION RECOVERY (2004)
 JV6516
 JV6516'RECOVERY NOTE BY URS COMPANY 2004
 JV6516'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6517 ***********************************************************************
 JV6517  DESIGNATION -  EXPRESS RM 3
 JV6517  PID         -  JV6517
 JV6517  STATE/COUNTY-  MD/BALTIMORE
 JV6517  COUNTRY     -  US
 JV6517  USGS QUAD   -  MIDDLE RIVER (2016)
 JV6517
 JV6517                         *CURRENT SURVEY CONTROL
 JV6517  ______________________________________________________________________
 JV6517* NAD 83(1991) POSITION- 39 21 33.20554(N) 076 28 26.17908(W)   NO CHECK
 JV6517* NAVD 88 ORTHO HEIGHT -    41.43  (meters)      135.9   (feet) RESET
 JV6517  ______________________________________________________________________
 JV6517  GEOID HEIGHT    -        -32.914 (meters)                     GEOID18
 JV6517  LAPLACE CORR    -         -3.57  (seconds)                    DEFLEC18
 JV6517  HORZ ORDER      -  THIRD
 JV6517  VERT ORDER      -  THIRD
 JV6517
 JV6517.The horizontal coordinates were established by classical geodetic methods
 JV6517.and adjusted by the National Geodetic Survey in January 1992.
 JV6517
 JV6517.No horizontal observational check was made to the station.
 JV6517
 JV6517.The orthometric height was computed from unverified reset data.
 JV6517
 JV6517.No vertical observational check was made to the station.
 JV6517
 JV6517.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6517.GEOID18 height accuracy estimate available here.
 JV6517
 JV6517.Click photographs - Photos may exist for this station.
 JV6517
 JV6517.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6517
 JV6517. The following values were computed from the NAD 83(1991) position.
 JV6517
 JV6517;                    North         East     Units Scale Factor Converg.
 JV6517;SPC MD       -   188,016.098   445,338.566   MT  0.99998538   +0 19 48.6
 JV6517;SPC MD       -   616,849.48  1,461,081.61   sFT  0.99998538   +0 19 48.6
 JV6517;UTM  18      - 4,357,677.233   373,014.173   MT  0.99979854   -0 56 05.5
 JV6517
 JV6517!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6517!SPC MD       -   0.99999866  x   0.99998538  =   0.99998404
 JV6517!UTM  18      -   0.99999866  x   0.99979854  =   0.99979720
 JV6517
 JV6517_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7301457677(NAD 83)
 JV6517
 JV6517                          SUPERSEDED SURVEY CONTROL
 JV6517
 JV6517  NAD 83(1986)-  39 21 33.20085(N)    076 28 26.18771(W) AD(       ) 3
 JV6517  NGVD 29 (11/18/05)   41.68   (m)          136.7    (f) RESET       3  
 JV6517  NGVD 29              41.68   (m)          136.7    (f) LEVELING    3  
 JV6517
 JV6517.Superseded values are not recommended for survey control.
 JV6517
 JV6517.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6517.See file dsdata.pdf to determine how the superseded data were derived.
 JV6517
 JV6517_STAMPING: EXPRESS 1958 NO 3 1984
 JV6517_MARK LOGO: NGS
 JV6517_PROJECTION: PROJECTING 5 CENTIMETERS
 JV6517
 JV6517  HISTORY     - Date     Condition        Report By
 JV6517  HISTORY     - 1984     MONUMENTED       NGS
 JV6517  HISTORY     - 19950720 MARK NOT FOUND   USPSQD
 JV6517  HISTORY     - 2017     MARK NOT FOUND   NGS
 JV6517
 JV6517                          STATION DESCRIPTION
 JV6517
 JV6517'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6517'5.5 KM (3.40 MI) NE FROM GOLDEN RING.
 JV6517'FROM THE INTERSECTION OF INTERSTATE HIGHWAY 695 AND STATE HIGHWAY 7
 JV6517'(PHILADELPHIA ROAD) GO NORTHEAST ON STATE HIGHWAY 7
 JV6517'(PHILADELPHIA ROAD) FOR 3.3 KM (2.05 MI) TO ROAD LEFT, TURN LEFT AND
 JV6517'GO NORTHWEST ON KING AVENUE FOR 1.2 KM (0.75 MI) TO THE MARK ON THE
 JV6517'LEFT, 5.5 M (18.0 FT) SOUTH-SOUTHWEST FROM THE CENTER OF KING AVENUE,
 JV6517'20.9 M (68.6 FT) SOUTHWEST FROM THE SOUTHWEST CORNER OF A HOUSE
 JV6517'NUMBERED 5210 KING AVENUE, 0.5 M (1.6 FT) EAST FROM A POWERLINE POLE
 JV6517'NUMBERED 95350 AND 0.9 M (3.0 FT) SOUTH FROM A SMALL DITCH.
 JV6517'THE MARK IS 0.33 METERS  SE FROM  A WITNESS POST
 JV6517'THE MARK IS 0.3 M ABOVE ROAD.
 JV6517
 JV6517                          STATION RECOVERY (1995)
 JV6517
 JV6517'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6517'MARK NOT FOUND.
 JV6517
 JV6517                          STATION RECOVERY (2017)
 JV6517
 JV6517'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV6517'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6518 ***********************************************************************
 JV6518  DESIGNATION -  EXPRESS RM 4
 JV6518  PID         -  JV6518
 JV6518  STATE/COUNTY-  MD/BALTIMORE
 JV6518  COUNTRY     -  US
 JV6518  USGS QUAD   -  MIDDLE RIVER (2016)
 JV6518
 JV6518                         *CURRENT SURVEY CONTROL
 JV6518  ______________________________________________________________________
 JV6518* NAD 83(1991) POSITION- 39 21 34.45403(N) 076 28 31.51339(W)   NO CHECK
 JV6518* NAVD 88 ORTHO HEIGHT -    42.67  (meters)      140.0   (feet) RESET
 JV6518  ______________________________________________________________________
 JV6518  GEOID HEIGHT    -        -32.911 (meters)                     GEOID18
 JV6518  LAPLACE CORR    -         -3.59  (seconds)                    DEFLEC18
 JV6518  HORZ ORDER      -  THIRD
 JV6518  VERT ORDER      -  THIRD
 JV6518
 JV6518.The horizontal coordinates were established by classical geodetic methods
 JV6518.and adjusted by the National Geodetic Survey in January 1992.
 JV6518
 JV6518.No horizontal observational check was made to the station.
 JV6518
 JV6518.The orthometric height was computed from unverified reset data.
 JV6518
 JV6518.No vertical observational check was made to the station.
 JV6518
 JV6518.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6518.GEOID18 height accuracy estimate available here.
 JV6518
 JV6518.Click photographs - Photos may exist for this station.
 JV6518
 JV6518.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6518
 JV6518. The following values were computed from the NAD 83(1991) position.
 JV6518
 JV6518;                    North         East     Units Scale Factor Converg.
 JV6518;SPC MD       -   188,053.865   445,210.641   MT  0.99998543   +0 19 45.3
 JV6518;SPC MD       -   616,973.39  1,460,661.91   sFT  0.99998543   +0 19 45.3
 JV6518;UTM  18      - 4,357,717.808   372,887.137   MT  0.99979894   -0 56 08.9
 JV6518
 JV6518!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6518!SPC MD       -   0.99999847  x   0.99998543  =   0.99998390
 JV6518!UTM  18      -   0.99999847  x   0.99979894  =   0.99979741
 JV6518
 JV6518_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7288757717(NAD 83)
 JV6518
 JV6518                          SUPERSEDED SURVEY CONTROL
 JV6518
 JV6518  NAD 83(1986)-  39 21 34.44934(N)    076 28 31.52203(W) AD(       ) 3
 JV6518  NGVD 29 (11/18/05)   42.91   (m)          140.8    (f) RESET       3  
 JV6518  NGVD 29              42.91   (m)          140.8    (f) LEVELING    3  
 JV6518
 JV6518.Superseded values are not recommended for survey control.
 JV6518
 JV6518.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6518.See file dsdata.pdf to determine how the superseded data were derived.
 JV6518
 JV6518_MARKER: DR = REFERENCE MARK DISK
 JV6518_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV6518_SP_SET: HEADWALL
 JV6518_STAMPING: EXPRESS 1959 NO 4 1984
 JV6518_MARK LOGO: NGS
 JV6518_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6518_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6518+STABILITY: SURFACE MOTION
 JV6518
 JV6518  HISTORY     - Date     Condition        Report By
 JV6518  HISTORY     - 1984     MONUMENTED       NGS
 JV6518  HISTORY     - 19950720 MARK NOT FOUND   USPSQD
 JV6518
 JV6518                          STATION DESCRIPTION
 JV6518
 JV6518'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6518'5.5 KM (3.40 MI) NE FROM GOLDEN RING.
 JV6518'FROM THE INTERSECTION OF INTERSTATE HIGHWAY 695 AND STATE HIGHWAY 7
 JV6518'(PHILADELPHIA ROAD) GO NORTHEAST ON STATE HIGHWAY 7
 JV6518'(PHILADELPHIA ROAD) FOR 3.3 KM (2.05 MI) TO A ROAD LEFT.  TURN LEFT
 JV6518'AND GO NORTHWEST ON KING AVENUE FOR 1.2 KM (0.75 MI) TO THE MARK ON
 JV6518'THE LEFT, 4.5 M (14.8 FT) SOUTH FROM THE CENTER OF KING AVENUE, 34.6
 JV6518'M (113.5 FT) NORTHWEST FROM THE NORTHWEST CORNER OF A HOUSE NUMBERED
 JV6518'5135 KING AVENUE, 8.4 M (27.6 FT) WEST FROM A POWERLINE POLE NUMBERED
 JV6518'233786 AND 0.9 M (3.0 FT) WEST FROM THE CENTER OF A SMALL DITCH.
 JV6518'THE MARK IS 0.4 M ABOVE .
 JV6518
 JV6518                          STATION RECOVERY (1995)
 JV6518
 JV6518'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6518'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5936 ***********************************************************************
 JV5936  DESIGNATION -  EXTRA
 JV5936  PID         -  JV5936
 JV5936  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5936  COUNTRY     -  US
 JV5936  USGS QUAD   -  BELTSVILLE (2016)
 JV5936
 JV5936                         *CURRENT SURVEY CONTROL
 JV5936  ______________________________________________________________________
 JV5936* NAD 83(1991) POSITION- 39 05 42.54205(N) 076 53 03.78311(W)   ADJUSTED
 JV5936* NAVD 88 ORTHO HEIGHT -   100.7   (meters)      330.    (feet) VERTCON3
 JV5936  ______________________________________________________________________
 JV5936  GEOID HEIGHT    -        -32.170 (meters)                     GEOID18
 JV5936  LAPLACE CORR    -         -4.33  (seconds)                    DEFLEC18
 JV5936  HORZ ORDER      -  SECOND
 JV5936
 JV5936.The horizontal coordinates were established by classical geodetic methods
 JV5936.and adjusted by the National Geodetic Survey in January 1992.
 JV5936
 JV5936.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5936.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5936
 JV5936.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5936.GEOID18 height accuracy estimate available here.
 JV5936
 JV5936.Click photographs - Photos may exist for this station.
 JV5936
 JV5936.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5936
 JV5936. The following values were computed from the NAD 83(1991) position.
 JV5936
 JV5936;                    North         East     Units Scale Factor Converg.
 JV5936;SPC MD       -   158,575.333   410,001.522   MT  0.99995715   +0 04 21.2
 JV5936;SPC MD       -   520,259.24  1,345,146.66   sFT  0.99995715   +0 04 21.2
 JV5936;UTM  18      - 4,329,025.855   337,040.558   MT  0.99992699   -1 11 18.9
 JV5936
 JV5936!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5936!SPC MD       -   0.99998925  x   0.99995715  =   0.99994640
 JV5936!UTM  18      -   0.99998925  x   0.99992699  =   0.99991624
 JV5936
 JV5936:                Primary Azimuth Mark                     Grid Az
 JV5936:SPC MD       -  CROWS RESET                              319 37 29.0
 JV5936:UTM  18      -  CROWS RESET                              320 53 09.1
 JV5936
 JV5936_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3704029025(NAD 83)
 JV5936
 JV5936|---------------------------------------------------------------------|
 JV5936| PID    Reference Object                     Distance      Geod. Az  |
 JV5936|                                                           dddmmss.s |
 JV5936| CA9393 EXTRA RM 1                           11.011 METERS 16230     |
 JV5936| JV5941 LAUREL PATUXENT FILT PLANT TK       APPROX. 1.4 KM 2831517.3 |
 JV5936| JV7071 CROWS RESET                         APPROX. 0.6 KM 3194150.2 |
 JV5936| CA9394 EXTRA RM 2                           11.009 METERS 33209     |
 JV5936|---------------------------------------------------------------------|
 JV5936
 JV5936                          SUPERSEDED SURVEY CONTROL
 JV5936
 JV5936  NAD 83(1986)-  39 05 42.54087(N)    076 53 03.79307(W) AD(       ) 2
 JV5936  NAD 27      -  39 05 42.15033(N)    076 53 04.89110(W) AD(       ) 2
 JV5936  NGVD 29 (07/19/86)  100.9    (m)          331.     (f) VERT ANG       
 JV5936
 JV5936.Superseded values are not recommended for survey control.
 JV5936
 JV5936.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5936.See file dsdata.pdf to determine how the superseded data were derived.
 JV5936
 JV5936_MARKER: DS = TRIANGULATION STATION DISK
 JV5936_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5936_STAMPING: EXTRA 1957
 JV5936_MARK LOGO: CGS
 JV5936_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5936+STABILITY: SURFACE MOTION
 JV5936
 JV5936  HISTORY     - Date     Condition        Report By
 JV5936  HISTORY     - 1957     MONUMENTED       CGS
 JV5936  HISTORY     - 1970     GOOD             NGS
 JV5936  HISTORY     - 1989     GOOD             LOCSUR
 JV5936
 JV5936                          STATION DESCRIPTION
 JV5936
 JV5936'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5936'STATION IS LOCATED ABOUT 2 MILES WEST SOUTHWEST OF LAUREL AND ABOUT
 JV5936'1/2 MILE SOUTH OF STATE HIGHWAY 198.  STATION IS 18 FEET WEST OF
 JV5936'THE APPROXIMATE CENTER OF BLACKTOP ROAD, 4 FEET WEST OF TELEPHONE
 JV5936'POLE AND 2 FEET WEST OF WITNESS POST.  THE MARK PROJECTS ABOUT 4
 JV5936'INCHES AND THE DISK IS STAMPED EXTRA 1957.
 JV5936'
 JV5936'REFERENCE MARK NO. 1 IS 16 FEET WEST OF THE APPROXIMATE CENTER OF
 JV5936'BLACKTOP ROAD.  THE MARK PROJECTS ABOUT 6 INCHES AND THE DISK IS
 JV5936'STAMPED EXTRA NO 1 1957.
 JV5936'
 JV5936'REFERENCE MARK NO. 2 IS 21 FEET WEST OF THE APPROXIMATE CENTERLINE OF
 JV5936'BLACKTOP ROAD.  THE MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS
 JV5936'STAMPED EXTRA NO 2 1957.
 JV5936'
 JV5936'A TRAVERSE CONNECTION WAS MADE TO STATION FROM TRIANGULATION STATION
 JV5936'CROWS.
 JV5936'
 JV5936'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 1 AND STATE
 JV5936'HIGHWAY 198 IN LAUREL GO NORTHWEST ON STATE HIGHWAY 198 FOR 0.9
 JV5936'MILE TO FORKS.  KEEP LEFT FORK ON STATE HIGHWAY 198 FOR 1.65 MILES
 JV5936'TO SIDE ROAD LEFT.  TURN LEFT AND GO 0.4 MILE TO STATION ON THE
 JV5936'RIGHT AS DESCRIBED.
 JV5936'
 JV5936'HEIGHT OF LIGHT ABOVE STATION MARK 1 METERS.
 JV5936
 JV5936                          STATION RECOVERY (1970)
 JV5936
 JV5936'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5936'THE STATION MARK, REFERENCE MARKS NUMBER 1 AND 2 WERE RECOVERED
 JV5936'AS DESCRIBED BY J.C. ELLERBE IN 1957 AND ALL MARKS WERE IN
 JV5936'GOOD CONDITION.
 JV5936'
 JV5936'A GEODIMETER TRAVERSE CONNECTION WAS MADE TO TRIANGULATION
 JV5936'STATION CROWS 1957 DISTANCE BEING 570.392 METERS.
 JV5936'
 JV5936'A DIFFERENCE WAS NOTED IN THE 1957 TAPED DISTANCE AND THE
 JV5936'GEODIMETER DISTANCE OF 0.009 METERS.
 JV5936'
 JV5936'1957 TAPED DISTANCE TO TRIANGULATION STATION CROWS 1957, 570.401
 JV5936'METERS.
 JV5936'
 JV5936'1970 GEODIMETER DISTANCE TO TRIANGULATION STATION CROWS 1957,
 JV5936'570.392 METERS.
 JV5936'
 JV5936'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5936'2 MILES WEST-SOUTHWEST OF LAUREL.
 JV5936
 JV5936                          STATION RECOVERY (1989)
 JV5936
 JV5936'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1989 (MSC)
 JV5936'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0015 ***********************************************************************
 JW0015  DESIGNATION -  F
 JW0015  PID         -  JW0015
 JW0015  STATE/COUNTY-  MD/WASHINGTON
 JW0015  COUNTRY     -  US
 JW0015  USGS QUAD   -  HANCOCK (2016)
 JW0015
 JW0015                         *CURRENT SURVEY CONTROL
 JW0015  ______________________________________________________________________
 JW0015* NAD 83(1986) POSITION- 39 41 53.     (N) 078 11 02.     (W)   SCALED
 JW0015* NAVD 88 ORTHO HEIGHT -   128.094 (meters)      420.26  (feet) ADJUSTED
 JW0015  ______________________________________________________________________
 JW0015  GEOID HEIGHT    -        -34.019 (meters)                     GEOID18
 JW0015  DYNAMIC HEIGHT  -        128.020 (meters)      420.01  (feet) COMP
 JW0015  MODELED GRAVITY -    980,052.6   (mgal)                       NAVD 88
 JW0015
 JW0015  VERT ORDER      -  FIRST     CLASS II
 JW0015
 JW0015.The horizontal coordinates were scaled from a map and have
 JW0015.an estimated accuracy of +/- 6 seconds.
 JW0015
 JW0015.The orthometric height was determined by differential leveling and
 JW0015.adjusted by the NATIONAL GEODETIC SURVEY
 JW0015.in June 1991.
 JW0015
 JW0015.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0015.GEOID18 height accuracy estimate available here.
 JW0015
 JW0015.Click photographs - Photos may exist for this station.
 JW0015
 JW0015.The dynamic height is computed by dividing the NAVD 88
 JW0015.geopotential number by the normal gravity value computed on the
 JW0015.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0015.degrees latitude (g = 980.6199 gals.).
 JW0015
 JW0015.The modeled gravity was interpolated from observed gravity values.
 JW0015
 JW0015;                    North         East    Units  Estimated Accuracy
 JW0015;SPC MD       -   226,160.      298,460.      MT  (+/- 180 meters Scaled)
 JW0015
 JW0015_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD414980(NAD 83)
 JW0015
 JW0015                          SUPERSEDED SURVEY CONTROL
 JW0015
 JW0015  NGVD 29 (??/??/92)  128.301  (m)          420.93   (f) ADJ UNCH    1 2
 JW0015
 JW0015.Superseded values are not recommended for survey control.
 JW0015
 JW0015.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0015.See file dsdata.pdf to determine how the superseded data were derived.
 JW0015
 JW0015_MARKER: Q = CHISELED SQUARE
 JW0015_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0015_SP_SET: WALL
 JW0015_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0015
 JW0015  HISTORY     - Date     Condition        Report By
 JW0015  HISTORY     - 1879     MONUMENTED       CGS
 JW0015  HISTORY     - 1941     GOOD             CGS
 JW0015  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0015
 JW0015                          STATION DESCRIPTION
 JW0015
 JW0015'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0015'AT HANCOCK.
 JW0015'NEW DESCRIPTION-- AT HANCOCK, 33 RAILS EAST OF THE WESTERN
 JW0015'MARYLAND RAILROAD STATION, SET IN ABOUT THE CENTER OF THE NORTH
 JW0015'WALL OF THE AQUEDUCT, 2.1 FEET SOUTH OF THE NORTH EDGE, 2.1
 JW0015'FEET NORTH OF THE SOUTH EDGE, 115 FEET SOUTH OF THE SOUTH RAIL
 JW0015'OF THE TRACK.  A CHISELED SQUARE.
 JW0015
 JW0015                          STATION RECOVERY (1983)
 JW0015
 JW0015'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0015'NOT RECOVERED, NO SIGN OF A CHISELED SQUARE COULD BE FOUND AT THIS
 JW0015'LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3583 ***********************************************************************
 JU3583  DESIGNATION -  F
 JU3583  PID         -  JU3583
 JU3583  STATE/COUNTY-  MD/CECIL
 JU3583  COUNTRY     -  US
 JU3583  USGS QUAD   -  NORTH EAST (2016)
 JU3583
 JU3583                         *CURRENT SURVEY CONTROL
 JU3583  ______________________________________________________________________
 JU3583* NAD 83(1991) POSITION- 39 30 00.28103(N) 075 55 53.17046(W)   ADJUSTED
 JU3583* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3583  ______________________________________________________________________
 JU3583  GEOID HEIGHT    -        -33.317 (meters)                     GEOID18
 JU3583  LAPLACE CORR    -         -0.87  (seconds)                    DEFLEC18
 JU3583  HORZ ORDER      -  THIRD
 JU3583
 JU3583.The horizontal coordinates were established by classical geodetic methods
 JU3583.and adjusted by the National Geodetic Survey in January 1992.
 JU3583
 JU3583.The orthometric height was scaled from a topographic map.
 JU3583
 JU3583.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3583.GEOID18 height accuracy estimate available here.
 JU3583
 JU3583.Click photographs - Photos may exist for this station.
 JU3583
 JU3583.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3583
 JU3583. The following values were computed from the NAD 83(1991) position.
 JU3583
 JU3583;                    North         East     Units Scale Factor Converg.
 JU3583;SPC MD       -   204,061.500   491,909.461   MT  1.00000914   +0 40 14.4
 JU3583;SPC MD       -   669,491.77  1,613,872.96   sFT  1.00000914   +0 40 14.4
 JU3583;UTM  18      - 4,372,687.249   419,915.439   MT  0.99967896   -0 35 33.0
 JU3583
 JU3583!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3583!SPC MD       -   1.00000526  x   1.00000914  =   1.00001440
 JU3583!UTM  18      -   1.00000526  x   0.99967896  =   0.99968422
 JU3583
 JU3583:                Primary Azimuth Mark                     Grid Az
 JU3583:SPC MD       -  E                                        035 12 21.5
 JU3583:UTM  18      -  E                                        036 28 08.9
 JU3583
 JU3583_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1991572687(NAD 83)
 JU3583
 JU3583|---------------------------------------------------------------------|
 JU3583| PID    Reference Object                     Distance      Geod. Az  |
 JU3583|                                                           dddmmss.s |
 JU3583| JU3938 E                                   APPROX. 0.6 KM 0355235.9 |
 JU3583| CB1489 F RM 1                               64.380 METERS 27617     |
 JU3583| CB1490 F RM 2                               35.348 METERS 32012     |
 JU3583|---------------------------------------------------------------------|
 JU3583
 JU3583                          SUPERSEDED SURVEY CONTROL
 JU3583
 JU3583  NAD 83(1986)-  39 30 00.27349(N)    075 55 53.17748(W) AD(       ) 3
 JU3583  NAD 27      -  39 29 59.87500(N)    075 55 54.39100(W) AD(       ) 3
 JU3583
 JU3583.Superseded values are not recommended for survey control.
 JU3583
 JU3583.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3583.See file dsdata.pdf to determine how the superseded data were derived.
 JU3583
 JU3583_MARKER: DD = SURVEY DISK
 JU3583_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3583_STAMPING: F
 JU3583_MARK LOGO: USACE
 JU3583_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3583+STABILITY: SURFACE MOTION
 JU3583
 JU3583  HISTORY     - Date     Condition        Report By
 JU3583  HISTORY     - 1937     MONUMENTED       USACE
 JU3583
 JU3583                          STATION DESCRIPTION
 JU3583
 JU3583'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3583'LOCATED ON THE N SIDE OF ELK RIVER ABOUT 0.3 MILE SW OF HYLANDS
 JU3583'POINT ON A BULKHEADED PIER.  IT IS 41.3 METERS INSHORE FROM
 JU3583'THE OUTER END OF PIER, 3.5 METERS FROM THE N BULKHEAD, AND
 JU3583'7.8 METERS FROM THE S BULKHEAD.  THE STATION IS MARKED BY A
 JU3583'STANDARD U.S.E.D. DISK, STAMPED F SET ATOP A 6-INCH SQUARE
 JU3583'CONCRETE POST AND PROJECTS 12 INCHES ABOVE GROUND.  THE
 JU3583'REFERENCE MARKS ARE STANDARD U.S.E.D. DISKS SET ATOP CONCRETE
 JU3583'POSTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0976 ***********************************************************************
 HV0976  DESIGNATION -  F 100
 HV0976  PID         -  HV0976
 HV0976  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0976  COUNTRY     -  US
 HV0976  USGS QUAD   -  BENEDICT (2016)
 HV0976
 HV0976                         *CURRENT SURVEY CONTROL
 HV0976  ______________________________________________________________________
 HV0976* NAD 83(1986) POSITION- 38 33 51.     (N) 076 43 48.     (W)   SCALED
 HV0976* NAVD 88 ORTHO HEIGHT -    42.349 (meters)      138.94  (feet) ADJUSTED
 HV0976  ______________________________________________________________________
 HV0976  GEOID HEIGHT    -        -33.499 (meters)                     GEOID18
 HV0976  DYNAMIC HEIGHT  -         42.324 (meters)      138.86  (feet) COMP
 HV0976  MODELED GRAVITY -    980,029.6   (mgal)                       NAVD 88
 HV0976
 HV0976  VERT ORDER      -  FIRST     CLASS II
 HV0976
 HV0976.The horizontal coordinates were scaled from a map and have
 HV0976.an estimated accuracy of +/- 6 seconds.
 HV0976
 HV0976.The orthometric height was determined by differential leveling and
 HV0976.adjusted by the NATIONAL GEODETIC SURVEY
 HV0976.in June 1991.
 HV0976
 HV0976.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0976.GEOID18 height accuracy estimate available here.
 HV0976
 HV0976.Click photographs - Photos may exist for this station.
 HV0976
 HV0976.The dynamic height is computed by dividing the NAVD 88
 HV0976.geopotential number by the normal gravity value computed on the
 HV0976.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0976.degrees latitude (g = 980.6199 gals.).
 HV0976
 HV0976.The modeled gravity was interpolated from observed gravity values.
 HV0976
 HV0976;                    North         East    Units  Estimated Accuracy
 HV0976;SPC MD       -    99,660.      423,530.      MT  (+/- 180 meters Scaled)
 HV0976
 HV0976_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH492698(NAD 83)
 HV0976
 HV0976                          SUPERSEDED SURVEY CONTROL
 HV0976
 HV0976  NGVD 29 (11/26/84)   42.612  (m)          139.80   (f) ADJUSTED    1 2
 HV0976
 HV0976.Superseded values are not recommended for survey control.
 HV0976
 HV0976.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0976.See file dsdata.pdf to determine how the superseded data were derived.
 HV0976
 HV0976_MARKER: DB = BENCH MARK DISK
 HV0976_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0976_STAMPING: F 100 1961
 HV0976_MARK LOGO: CGS
 HV0976_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0976+STABILITY: SURFACE MOTION
 HV0976_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0976+SATELLITE: SATELLITE OBSERVATIONS - May 02, 1993
 HV0976
 HV0976  HISTORY     - Date     Condition        Report By
 HV0976  HISTORY     - 1961     MONUMENTED       CGS
 HV0976  HISTORY     - 1971     GOOD             NGS
 HV0976  HISTORY     - 19930502 GOOD
 HV0976
 HV0976                          STATION DESCRIPTION
 HV0976
 HV0976'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0976'4.2 MI NE FROM HUGHESVILLE.
 HV0976'ABOUT 2.15 MILES EAST ALONG STATE HIGHWAYS 231 AND 381 FROM THE
 HV0976'INTERSECTION OF STATE HIGHWAY 5 AT HUGHESVILLE, THENCE 2.0 MILES
 HV0976'NORTHEAST ALONG STATE HIGHWAY 381, ABOUT 0.7 MILE NORTHEAST OF
 HV0976'THE HIGHWAY BRIDGE OVER SWANSON CREEK, ABOUT 0.55 MILE NORTHEAST
 HV0976'OF A HIGHWAY OVERPASS FOR A RAILROAD, 46 FEET SOUTHEAST OF THE
 HV0976'CENTER LINE OF THE HIGHWAY, 196 FEET SOUTHWEST OF A POWER POLE
 HV0976'WHICH IS LOCATED ON THE TOP OF A CUT FOR THE HIGHWAY, 43.0 FEET
 HV0976'EAST OF THE MOST NORTHEASTERLY POST IN A GUARDRAIL, 3.0 FEET
 HV0976'NORTHWEST OF A METAL WITNESS POST, ABOUT 2 FEET ABOVE THE LEVEL
 HV0976'OF THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 HV0976'3 INCHES.
 HV0976
 HV0976                          STATION RECOVERY (1993)
 HV0976
 HV0976'RECOVERED 1993
 HV0976'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7681 ***********************************************************************
 AJ7681  DESIGNATION -  F 100 TBM
 AJ7681  PID         -  AJ7681
 AJ7681  STATE/COUNTY-  MD/PRINCE GEORGES
 AJ7681  COUNTRY     -  US
 AJ7681  USGS QUAD   -  BENEDICT (2016)
 AJ7681
 AJ7681                         *CURRENT SURVEY CONTROL
 AJ7681  ______________________________________________________________________
 AJ7681* NAD 83(2011) POSITION- 38 33 51.20448(N) 076 43 48.63065(W)   ADJUSTED
 AJ7681* NAD 83(2011) ELLIP HT-     9.269 (meters)        (06/27/12)   ADJUSTED
 AJ7681* NAD 83(2011) EPOCH   -  2010.00
 AJ7681* NAVD 88 ORTHO HEIGHT -    42.8   (meters)      140.    (feet) GPS OBS
 AJ7681  ______________________________________________________________________
 AJ7681  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AJ7681  GEOID HEIGHT    -        -33.830 (meters)                     GEOID93
 AJ7681  GEOID HEIGHT    -        -33.499 (meters)                     GEOID18
 AJ7681  NAD 83(2011) X  -  1,146,224.963 (meters)                     COMP
 AJ7681  NAD 83(2011) Y  - -4,860,304.821 (meters)                     COMP
 AJ7681  NAD 83(2011) Z  -  3,954,612.075 (meters)                     COMP
 AJ7681  LAPLACE CORR    -         -3.30  (seconds)                    DEFLEC18
 AJ7681
 AJ7681  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7681  Standards:
 AJ7681         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7681            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7681  -------------------------------------------------------------------
 AJ7681  NETWORK    1.45   2.98           0.62   0.56   1.52      0.02305566
 AJ7681  -------------------------------------------------------------------
 AJ7681  Click here for local accuracies and other accuracy information.
 AJ7681
 AJ7681.The horizontal coordinates were established by GPS observations
 AJ7681.and adjusted by the National Geodetic Survey in June 2012.
 AJ7681
 AJ7681.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7681.been affixed to the stable North American tectonic plate. See 
 AJ7681.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7681
 AJ7681.The horizontal coordinates are valid at the epoch date displayed above
 AJ7681.which is a decimal equivalence of Year/Month/Day.
 AJ7681
 AJ7681.The orthometric height was determined by GPS observations and a
 AJ7681.high-resolution geoid model.
 AJ7681
 AJ7681.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7681.GEOID18 height accuracy estimate available here.
 AJ7681
 AJ7681.Click photographs - Photos may exist for this station.
 AJ7681
 AJ7681.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7681
 AJ7681.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7681
 AJ7681.The ellipsoidal height was determined by GPS observations
 AJ7681.and is referenced to NAD 83.
 AJ7681
 AJ7681. The following values were computed from the NAD 83(2011) position.
 AJ7681
 AJ7681;                    North         East     Units Scale Factor Converg.
 AJ7681;SPC MD       -    99,667.075   423,515.783   MT  0.99996455   +0 10 09.7
 AJ7681;SPC MD       -   326,991.06  1,389,484.70   sFT  0.99996455   +0 10 09.7
 AJ7681;UTM  18      - 4,269,838.850   349,261.303   MT  0.99987982   -1 04 43.6
 AJ7681
 AJ7681!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7681!SPC MD       -   0.99999855  x   0.99996455  =   0.99996310
 AJ7681!UTM  18      -   0.99999855  x   0.99987982  =   0.99987837
 AJ7681
 AJ7681_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4926169838(NAD 83)
 AJ7681
 AJ7681                          SUPERSEDED SURVEY CONTROL
 AJ7681
 AJ7681  NAD 83(2007)-  38 33 51.20473(N)    076 43 48.63128(W) AD(2002.00) 0
 AJ7681  ELLIP H (02/10/07)    9.281  (m)                       GP(2002.00)    
 AJ7681  ELLIP H (08/30/02)    9.269  (m)                       GP(       ) 4 2
 AJ7681  NAD 83(1993)-  38 33 51.20395(N)    076 43 48.63106(W) AD(       ) 1
 AJ7681  ELLIP H (11/14/94)    9.329  (m)                       GP(       ) 4 2
 AJ7681  ELLIP H (09/09/94)    9.302  (m)                       GP(       ) 4 1
 AJ7681  NAD 83(1991)-  38 33 51.20404(N)    076 43 48.63232(W) AD(       ) 1
 AJ7681
 AJ7681.Superseded values are not recommended for survey control.
 AJ7681
 AJ7681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7681.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7681
 AJ7681_MARKER: Z = SEE DESCRIPTION
 AJ7681_SETTING: 0 = UNSPECIFIED SETTING
 AJ7681_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AJ7681
 AJ7681  HISTORY     - Date     Condition        Report By
 AJ7681  HISTORY     - 2001     MONUMENTED       NGS
 AJ7681
 AJ7681                          STATION DESCRIPTION
 AJ7681
 AJ7681'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001
 AJ7681'DESCRIPTION ADDED BY ADDESC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2608 ***********************************************************************
 DJ2608  DESIGNATION -  F 103 RESET
 DJ2608  PID         -  DJ2608
 DJ2608  STATE/COUNTY-  MD/CECIL
 DJ2608  COUNTRY     -  US
 DJ2608  USGS QUAD   -  NORTH EAST (2016)
 DJ2608
 DJ2608                         *CURRENT SURVEY CONTROL
 DJ2608  ______________________________________________________________________
 DJ2608* NAD 83(1986) POSITION- 39 36 08.6    (N) 075 56 33.2    (W)   HD_HELD2
 DJ2608* NAVD 88 ORTHO HEIGHT -     4.940 (meters)       16.21  (feet) ADJUSTED
 DJ2608  ______________________________________________________________________
 DJ2608  GEOID HEIGHT    -        -33.163 (meters)                     GEOID18
 DJ2608  DYNAMIC HEIGHT  -          4.937 (meters)       16.20  (feet) COMP
 DJ2608  MODELED GRAVITY -    980,132.1   (mgal)                       NAVD 88
 DJ2608
 DJ2608  VERT ORDER      -  FIRST     CLASS II
 DJ2608
 DJ2608.The horizontal coordinates were established by autonomous hand held GPS
 DJ2608.observations and have an estimated accuracy of +/- 10 meters.
 DJ2608
 DJ2608.The orthometric height was determined by differential leveling and
 DJ2608.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2608.in October 2007.
 DJ2608
 DJ2608.No vertical observational check was made to the station.
 DJ2608
 DJ2608.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2608.GEOID18 height accuracy estimate available here.
 DJ2608
 DJ2608.Click photographs - Photos may exist for this station.
 DJ2608
 DJ2608.The dynamic height is computed by dividing the NAVD 88
 DJ2608.geopotential number by the normal gravity value computed on the
 DJ2608.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2608.degrees latitude (g = 980.6199 gals.).
 DJ2608
 DJ2608.The modeled gravity was interpolated from observed gravity values.
 DJ2608
 DJ2608;                    North         East    Units  Estimated Accuracy
 DJ2608;SPC MD       -   215,409.      490,822.      MT  (+/- 10 meters HH2 GPS)
 DJ2608
 DJ2608_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1907884052(NAD 83)
 DJ2608
 DJ2608                          SUPERSEDED SURVEY CONTROL
 DJ2608
 DJ2608.No superseded survey control is available for this station.
 DJ2608
 DJ2608_MARKER: DD = SURVEY DISK
 DJ2608_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 DJ2608_SP_SET: BRIDGE ABUTMENT
 DJ2608_STAMPING: F 103 RESET 2004
 DJ2608_MARK LOGO: MDSHA
 DJ2608_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DJ2608_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DJ2608_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ2608+SATELLITE: SATELLITE OBSERVATIONS - September 29, 2004
 DJ2608
 DJ2608  HISTORY     - Date     Condition        Report By
 DJ2608  HISTORY     - 20040929 MONUMENTED       MDSHA
 DJ2608  HISTORY     - 20120210 GOOD             MD-015
 DJ2608  HISTORY     - 20250918 GOOD             PROFLN
 DJ2608
 DJ2608                          STATION DESCRIPTION
 DJ2608
 DJ2608'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004
 DJ2608'THE MARK IS LOCATED ABOUT 14.3 MI (23.01 KM) NORTH-NORTHWEST OF
 DJ2608'CECILTON, 5.9 MI (9.5 KM) WEST OF ELKTON AND 0.2 MI (0.32 KM)
 DJ2608'NORTH-NORTHWEST OF NORTH EAST, ABOUT 100 YARDS (91.4 M) NORTHWEST
 DJ2608'ALONG STATE HIGHWAY 272 FROM STATE HIGHWAY 7, AT THE HIGHWAY BRIDGE
 DJ2608'OVER NORTH EAST CREEK.
 DJ2608'
 DJ2608'IT IS A MARYLAND STATE SURVEY DISK SET IN A DRILL HOLE IN THE
 DJ2608'SOUTHEAST END OF THE SOUTHWEST SIDEWALK, WHICH IS PART OF THE BRIDGE
 DJ2608'ABUTMENT, 19.0 FT (5.8 M) SOUTHWEST OF THE CENTER OF THE ROAD, 1.9 FT
 DJ2608'(0.6 M) NORTHEAST OF THE FACE OF THE PARAPET WALL, 4.0 FT (1.2 M)
 DJ2608'NORTH OF THE SOUTH CORNER OF THE PARAPET WALL, 52.0 FT (15.8 M)
 DJ2608'NORTHEAST OF A SMALL METAL LIGHT POLE, 104.5 FT (31.9 M) NORTHWEST OF
 DJ2608'A POWER POLE 37486-38255 AND ABOUT 0.5 FT (0.2 M) ABOVE THE LEVEL OF
 DJ2608'THE ROAD.
 DJ2608
 DJ2608                          STATION RECOVERY (2012)
 DJ2608
 DJ2608'RECOVERY NOTE BY CECIL COUNTY MARYLAND 2012 (DRB)
 DJ2608'THE MARK IS ON THE WESTERN SIDEWALK OF THE NORTHBOUND LANES OF ROUTE
 DJ2608'272 (N MAULDIN AVE).
 DJ2608
 DJ2608                          STATION RECOVERY (2025)
 DJ2608
 DJ2608'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DJ2608'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL8738 ***********************************************************************
 DL8738  TIDAL BM    -  This is a Tidal Bench Mark.
 DL8738  DESIGNATION -  F 104 RESET
 DL8738  PID         -  DL8738
 DL8738  STATE/COUNTY-  MD/WORCESTER
 DL8738  COUNTRY     -  US
 DL8738  USGS QUAD   -  OCEAN CITY (2016)
 DL8738
 DL8738                         *CURRENT SURVEY CONTROL
 DL8738  ______________________________________________________________________
 DL8738* NAD 83(1986) POSITION- 38 19 48.1    (N) 075 05 14.7    (W)   HD_HELD2
 DL8738* NAVD 88 ORTHO HEIGHT -     1.070 (meters)        3.51  (feet) ADJUSTED
 DL8738  ______________________________________________________________________
 DL8738  GEOID HEIGHT    -        -36.063 (meters)                     GEOID18
 DL8738  DYNAMIC HEIGHT  -          1.070 (meters)        3.51  (feet) COMP
 DL8738  MODELED GRAVITY -    980,007.8   (mgal)                       NAVD 88
 DL8738
 DL8738  VERT ORDER      -  SECOND    CLASS I
 DL8738
 DL8738.The horizontal coordinates were established by autonomous hand held GPS
 DL8738.observations and have an estimated accuracy of +/- 10 meters.
 DL8738
 DL8738.The orthometric height was determined by differential leveling and
 DL8738.adjusted by the NATIONAL GEODETIC SURVEY
 DL8738.in August 2010.
 DL8738
 DL8738.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL8738.GEOID18 height accuracy estimate available here.
 DL8738
 DL8738.This Tidal Bench Mark is designated as VM 19241
 DL8738.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 DL8738
 DL8738.Click photographs - Photos may exist for this station.
 DL8738
 DL8738.The dynamic height is computed by dividing the NAVD 88
 DL8738.geopotential number by the normal gravity value computed on the
 DL8738.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL8738.degrees latitude (g = 980.6199 gals.).
 DL8738
 DL8738.The modeled gravity was interpolated from observed gravity values.
 DL8738
 DL8738;                    North         East    Units  Estimated Accuracy
 DL8738;SPC MD       -    75,388.      567,218.      MT  (+/- 10 meters HH2 GPS)
 DL8738
 DL8738_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9235942436(NAD 83)
 DL8738
 DL8738                          SUPERSEDED SURVEY CONTROL
 DL8738
 DL8738.No superseded survey control is available for this station.
 DL8738
 DL8738_MARKER: DV = VERTICAL CONTROL DISK
 DL8738_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DL8738_SP_SET: DRIVEWAY
 DL8738_STAMPING: F 104 RESET
 DL8738_MARK LOGO: NGS
 DL8738_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL8738_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DL8738_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DL8738+SATELLITE: SATELLITE OBSERVATIONS - January 11, 2011
 DL8738
 DL8738  HISTORY     - Date     Condition        Report By
 DL8738  HISTORY     - 2007     MONUMENTED       NOS
 DL8738  HISTORY     - 20101003 GOOD             NGS
 DL8738  HISTORY     - 20110111 GOOD             INDIV
 DL8738
 DL8738                          STATION DESCRIPTION
 DL8738
 DL8738'DESCRIBED BY NATIONAL OCEAN SERVICE 2007 (OJ)
 DL8738'THE MARK IS LOCATED IN OCEAN CITY, MARYLAND AT THE OCEAN CITY
 DL8738'VOLUNTEER FIREHOUSE COMPANY NO. 2, 102 DORCHESTER STREET, IN THE
 DL8738'SOUTHWEST CORNER OF THE CONCRETE DRIVEWAY.
 DL8738'
 DL8738'TO REACH FROM THE EAST END OF THE U.S. ROUTE 50 BRIDGE (THE HARRY W.
 DL8738'KELLY MEMORIAL BRIDGE) OVER ISLE OF WIGHT BAY, TURN SOUTH ONTO SOUTH
 DL8738'PHILADELPHIA AVENUE.  AT THE SECOND INTERSECTION, TURN EAST (LEFT)
 DL8738'ONTO DORCHESTER STREET.  CONTINUE EAST TO THE FIREHOUSE AND THE MARK
 DL8738'ON THE LEFT.
 DL8738'
 DL8738'THE MARK IS 29.25 M (96.0 FT) NORTH OF THE CENTERLINE OF DORCHESTER
 DL8738'STREET, 7.08 M (23.2 FT) NORTHWEST OF THE CENTER OF THE FIRE HYDRANT
 DL8738'AT THE SOUTHWEST CORNER OF THE INTERSECTION OF BALTIMORE AVENUE AND
 DL8738'DORCHESTER STREET, AND 6.25 M (20.5 FT) SOUTHEAST OF THE SOUTHWEST
 DL8738'CORNER OF THE FIRE COMPANY BUILDING.
 DL8738
 DL8738                          STATION RECOVERY (2010)
 DL8738
 DL8738'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 DL8738'RECOVERED IN GOOD CONDITION.
 DL8738
 DL8738                          STATION RECOVERY (2011)
 DL8738
 DL8738'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (RNH)
 DL8738'THE MARKER IS FOUND TO BE IN GOOD CONDITION BY THE TOWN OF OCEAN CITY
 DL8738'ENGINEERING DEPARTMENT AND LOCATED AS PER DESCRIPTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0462 ***********************************************************************
 HU0462  DESIGNATION -  F 105
 HU0462  PID         -  HU0462
 HU0462  STATE/COUNTY-  MD/WICOMICO
 HU0462  COUNTRY     -  US
 HU0462  USGS QUAD   -  SALISBURY (2016)
 HU0462
 HU0462                         *CURRENT SURVEY CONTROL
 HU0462  ______________________________________________________________________
 HU0462* NAD 83(2011) POSITION- 38 19 19.11088(N) 075 37 08.38346(W)   ADJUSTED
 HU0462* NAD 83(2011) ELLIP HT-   -24.183 (meters)        (01/22/24)   ADJUSTED
 HU0462* NAD 83(2011) EPOCH   -  2010.00
 HU0462* NAVD 88 ORTHO HEIGHT -    11.682 (meters)       38.33  (feet) ADJUSTED
 HU0462  ______________________________________________________________________
 HU0462  GEOID HEIGHT    -        -35.876 (meters)                     GEOID18
 HU0462  NAD 83(2011) X  -  1,244,408.973 (meters)                     COMP
 HU0462  NAD 83(2011) Y  - -4,853,332.303 (meters)                     COMP
 HU0462  NAD 83(2011) Z  -  3,933,529.795 (meters)                     COMP
 HU0462  LAPLACE CORR    -         -1.34  (seconds)                    DEFLEC18
 HU0462  DYNAMIC HEIGHT  -         11.675 (meters)       38.30  (feet) COMP
 HU0462  MODELED GRAVITY -    980,000.9   (mgal)                       NAVD 88
 HU0462
 HU0462  VERT ORDER      -  FIRST     CLASS I
 HU0462
 HU0462  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0462  Standards:
 HU0462         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0462            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0462  -------------------------------------------------------------------
 HU0462  NETWORK    0.45   1.35           0.19   0.18   0.69     -0.04505557
 HU0462  -------------------------------------------------------------------
 HU0462  Click here for local accuracies and other accuracy information.
 HU0462
 HU0462.The horizontal coordinates were established by GPS observations
 HU0462.and adjusted by the MD DOT HIGHWAY ADMIN in January 2024.
 HU0462
 HU0462.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0462.been affixed to the stable North American tectonic plate. See 
 HU0462.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0462
 HU0462.The horizontal coordinates are valid at the epoch date displayed above
 HU0462.which is a decimal equivalence of Year/Month/Day.
 HU0462
 HU0462.The orthometric height was determined by differential leveling and
 HU0462.adjusted by the NATIONAL GEODETIC SURVEY
 HU0462.in June 1991.
 HU0462
 HU0462.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0462.GEOID18 height accuracy estimate available here.
 HU0462
 HU0462.Click photographs - Photos may exist for this station.
 HU0462
 HU0462.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0462
 HU0462.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0462
 HU0462.The ellipsoidal height was determined by GPS observations
 HU0462.and is referenced to NAD 83.
 HU0462
 HU0462.The dynamic height is computed by dividing the NAVD 88
 HU0462.geopotential number by the normal gravity value computed on the
 HU0462.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0462.degrees latitude (g = 980.6199 gals.).
 HU0462
 HU0462.The modeled gravity was interpolated from observed gravity values.
 HU0462
 HU0462. The following values were computed from the NAD 83(2011) position.
 HU0462
 HU0462;                    North         East     Units Scale Factor Converg.
 HU0462;SPC MD       -    73,655.593   520,759.724   MT  0.99999625   +0 52 00.4
 HU0462;SPC MD       -   241,651.72  1,708,525.86   sFT  0.99999625   +0 52 00.4
 HU0462;UTM  18      - 4,241,721.063   445,892.081   MT  0.99963605   -0 23 01.8
 HU0462
 HU0462!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0462!SPC MD       -   1.00000379  x   0.99999625  =   1.00000004
 HU0462!UTM  18      -   1.00000379  x   0.99963605  =   0.99963984
 HU0462
 HU0462_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4589241721(NAD 83)
 HU0462
 HU0462                          SUPERSEDED SURVEY CONTROL
 HU0462
 HU0462  NGVD 29 (11/26/84)   11.937  (m)           39.16   (f) ADJUSTED    1 1
 HU0462
 HU0462.Superseded values are not recommended for survey control.
 HU0462
 HU0462.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0462.See file dsdata.pdf to determine how the superseded data were derived.
 HU0462
 HU0462_MARKER: DB = BENCH MARK DISK
 HU0462_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0462_STAMPING: F 105 1963
 HU0462_MARK LOGO: CGS
 HU0462_PROJECTION: PROJECTING 15 CENTIMETERS
 HU0462_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0462+STABILITY: SURFACE MOTION
 HU0462_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0462+SATELLITE: SATELLITE OBSERVATIONS - February 26, 2020
 HU0462
 HU0462  HISTORY     - Date     Condition        Report By
 HU0462  HISTORY     - 1963     MONUMENTED       CGS
 HU0462  HISTORY     - 1972     GOOD             NGS
 HU0462  HISTORY     - 19971018 GOOD             USPSQD
 HU0462  HISTORY     - 20050907 GOOD             GEOCAC
 HU0462  HISTORY     - 20200226 GOOD             MDSHA
 HU0462
 HU0462                          STATION DESCRIPTION
 HU0462
 HU0462'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0462'AT FRUITLAND.
 HU0462'AT FRUITLAND, ALONG THE PENN CENTRAL RAILROAD, NEAR THE CROSSING
 HU0462'OF MAIN STREET, 195 FEET NORTHEAST OF THE CENTER OF THE MAIN
 HU0462'STREET CROSSING THE TRACK, 58 FEET SOUTHEAST OF THE SOUTH CORNER
 HU0462'OF A CONCRETE BLOCK BUILDING OF THE MILLS MOTOR INC, 36.2 FEET
 HU0462'NORTHWEST OF THE NORTHWEST RAIL, 5 1/2 FEET SOUTH OF POWER LINE
 HU0462'POLE NO. 348-T 73, 1.5 FEET SOUTHEAST OF A METAL WITNESS POST,
 HU0462'1 FOOT BELOW THE LEVEL OF THE TRACK, SET IN THE TOP OF A CONCRETE
 HU0462'POST PROJECTING 6 INCHES ABOVE THE LEVEL OF THE GROUND.
 HU0462
 HU0462                          STATION RECOVERY (1997)
 HU0462
 HU0462'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0462'RECOVERED IN GOOD CONDITION.
 HU0462
 HU0462                          STATION RECOVERY (2005)
 HU0462
 HU0462'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0462'THE STATION IS LOCATED 195 FEET NORTHEAST OF THE CENTER OF THE MAIN
 HU0462'STREET CROSSING OF THE TRACK, 36.2 FEET NORTHWEST OF THE NORTHWEST
 HU0462'RAIL, 5.5 FEET SOUTH OF POWER LINE POLE 46278 91566, ABOUT FOUR FEET
 HU0462'EAST OF THE EAST EDGE OF PAVEMENT OF THE LOT FOR GARY PUSEY QUALITY
 HU0462'CARS, 1.5 FEET SOUTHEAST OF AN ORANGE CARSONITE WITNESS POST, ONE FOOT
 HU0462'BELOW THE LEVEL OF THE TRACK, SET IN THE TOP OF A CONCRETE POST THAT
 HU0462'PROJECTS SIX INCHES.
 HU0462
 HU0462                          STATION RECOVERY (2020)
 HU0462
 HU0462'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (EBD)
 HU0462'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0492 ***********************************************************************
 HU0492  DESIGNATION -  F 106
 HU0492  PID         -  HU0492
 HU0492  STATE/COUNTY-  MD/SOMERSET
 HU0492  COUNTRY     -  US
 HU0492  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0492
 HU0492                         *CURRENT SURVEY CONTROL
 HU0492  ______________________________________________________________________
 HU0492* NAD 83(1986) POSITION- 38 08 47.     (N) 075 40 17.     (W)   SCALED
 HU0492* NAVD 88 ORTHO HEIGHT -     5.148 (meters)       16.89  (feet) ADJUSTED
 HU0492  ______________________________________________________________________
 HU0492  GEOID HEIGHT    -        -36.094 (meters)                     GEOID18
 HU0492  DYNAMIC HEIGHT  -          5.145 (meters)       16.88  (feet) COMP
 HU0492  MODELED GRAVITY -    979,982.1   (mgal)                       NAVD 88
 HU0492
 HU0492  VERT ORDER      -  FIRST     CLASS I
 HU0492
 HU0492.The horizontal coordinates were scaled from a map and have
 HU0492.an estimated accuracy of +/- 6 seconds.
 HU0492
 HU0492.The orthometric height was determined by differential leveling and
 HU0492.adjusted by the NATIONAL GEODETIC SURVEY
 HU0492.in June 1991.
 HU0492
 HU0492.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0492.GEOID18 height accuracy estimate available here.
 HU0492
 HU0492.Click photographs - Photos may exist for this station.
 HU0492
 HU0492.The dynamic height is computed by dividing the NAVD 88
 HU0492.geopotential number by the normal gravity value computed on the
 HU0492.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0492.degrees latitude (g = 980.6199 gals.).
 HU0492
 HU0492.The modeled gravity was interpolated from observed gravity values.
 HU0492
 HU0492;                    North         East    Units  Estimated Accuracy
 HU0492;SPC MD       -    54,100.      516,460.      MT  (+/- 180 meters Scaled)
 HU0492
 HU0492_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH411222(NAD 83)
 HU0492
 HU0492                          SUPERSEDED SURVEY CONTROL
 HU0492
 HU0492  NGVD 29 (11/26/84)    5.401  (m)           17.72   (f) ADJUSTED    1 1
 HU0492
 HU0492.Superseded values are not recommended for survey control.
 HU0492
 HU0492.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0492.See file dsdata.pdf to determine how the superseded data were derived.
 HU0492
 HU0492_MARKER: DB = BENCH MARK DISK
 HU0492_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0492_STAMPING: F 106 1963
 HU0492_MARK LOGO: CGS
 HU0492_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0492_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0492+STABILITY: SURFACE MOTION
 HU0492
 HU0492  HISTORY     - Date     Condition        Report By
 HU0492  HISTORY     - 1963     MONUMENTED       CGS
 HU0492  HISTORY     - 1972     GOOD             NGS
 HU0492
 HU0492                          STATION DESCRIPTION
 HU0492
 HU0492'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0492'4.2 MI SE FROM PRINCESS ANNE.
 HU0492'ABOUT 2.6 MILES SOUTH ALONG SOMERSET AVENUE AND U.S. HIGHWAY 13
 HU0492'FROM THE JUNCTION OF STATE HIGHWAY 363 AT PRINCESS ANNE, THENCE
 HU0492'1.65 MILES SOUTHEAST ALONG THE PENN CENTRAL RAILROAD, 1.0 MILE
 HU0492'NORTHWEST OF THE CROSSING OF A SAND ROAD, 0.1 MILE SOUTHEAST OF
 HU0492'MILEPOST 23, 51 FEET SOUTHWEST OF POWER LINE POLE NO. 29, 42.5
 HU0492'FEET NORTHEAST OF THE NORTHEAST RAIL, 1.5 FEET SOUTHWEST OF A
 HU0492'METAL WITNESS POST, ABOUT LEVEL WITH THE TRACK AND SET IN THE
 HU0492'TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE LEVEL OF
 HU0492'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0416 ***********************************************************************
 HU0416  DESIGNATION -  F 107
 HU0416  PID         -  HU0416
 HU0416  STATE/COUNTY-  MD/WICOMICO
 HU0416  COUNTRY     -  US
 HU0416  USGS QUAD   -  DELMAR (2016)
 HU0416
 HU0416                         *CURRENT SURVEY CONTROL
 HU0416  ______________________________________________________________________
 HU0416* NAD 83(1986) POSITION- 38 23 34.     (N) 075 35 13.     (W)   SCALED
 HU0416* NAVD 88 ORTHO HEIGHT -    10.784 (meters)       35.38  (feet) ADJUSTED
 HU0416  ______________________________________________________________________
 HU0416  GEOID HEIGHT    -        -35.788 (meters)                     GEOID18
 HU0416  DYNAMIC HEIGHT  -         10.777 (meters)       35.36  (feet) COMP
 HU0416  MODELED GRAVITY -    980,008.1   (mgal)                       NAVD 88
 HU0416
 HU0416  VERT ORDER      -  FIRST     CLASS I
 HU0416
 HU0416.The horizontal coordinates were scaled from a map and have
 HU0416.an estimated accuracy of +/- 6 seconds.
 HU0416
 HU0416.The orthometric height was determined by differential leveling and
 HU0416.adjusted by the NATIONAL GEODETIC SURVEY
 HU0416.in June 1991.
 HU0416
 HU0416.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0416.GEOID18 height accuracy estimate available here.
 HU0416
 HU0416.Click photographs - Photos may exist for this station.
 HU0416
 HU0416.The dynamic height is computed by dividing the NAVD 88
 HU0416.geopotential number by the normal gravity value computed on the
 HU0416.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0416.degrees latitude (g = 980.6199 gals.).
 HU0416
 HU0416.The modeled gravity was interpolated from observed gravity values.
 HU0416
 HU0416;                    North         East    Units  Estimated Accuracy
 HU0416;SPC MD       -    81,560.      523,440.      MT  (+/- 180 meters Scaled)
 HU0416
 HU0416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH487495(NAD 83)
 HU0416
 HU0416                          SUPERSEDED SURVEY CONTROL
 HU0416
 HU0416  NGVD 29 (06/12/91)   11.036  (m)           36.21   (f) ADJUSTED    1 1
 HU0416  NGVD 29 (??/??/87)   11.036  (m)           36.21   (f) SUPERSEDED  1 1
 HU0416
 HU0416.Superseded values are not recommended for survey control.
 HU0416
 HU0416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0416.See file dsdata.pdf to determine how the superseded data were derived.
 HU0416
 HU0416_MARKER: DB = BENCH MARK DISK
 HU0416_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0416_STAMPING: F 107 1963
 HU0416_MARK LOGO: CGS
 HU0416_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0416+STABILITY: SURFACE MOTION
 HU0416_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0416+SATELLITE: SATELLITE OBSERVATIONS - January 24, 1990
 HU0416
 HU0416  HISTORY     - Date     Condition        Report By
 HU0416  HISTORY     - 1963     MONUMENTED       CGS
 HU0416  HISTORY     - 1972     GOOD             NGS
 HU0416  HISTORY     - 19900124 GOOD             NGS
 HU0416
 HU0416                          STATION DESCRIPTION
 HU0416
 HU0416'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0416'1.5 MI N FROM SALISBURY.
 HU0416'1.5 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HU0416'AT SALISBURY, ABOUT 0.4 MILE SOUTH OF MILEPOST 4, AT A POINT WHERE
 HU0416'POWER TRANSMISSION LINES CROSS TRACK, 59 FEET EAST OF EAST RAIL,
 HU0416'38 1/2 FEET NORTH OF POWER POLE 188, 4 1/2 FEET WEST OF POWER POLE
 HU0416'SS20, 1.5 FEET EAST OF A STEEL WITNESS POST, ABOUT LEVEL WITH
 HU0416'TRACK, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES.
 HU0416
 HU0416                          STATION RECOVERY (1972)
 HU0416
 HU0416'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0416'RECOVERED IN GOOD CONDITION.
 HU0416
 HU0416                          STATION RECOVERY (1990)
 HU0416
 HU0416'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0416'0.9 KM (0.56 MI) SOUTHERLY ALONG THE CONRAIL RAILROAD FROM THE
 HU0416'JUNCTION OF MARVEL ROAD IN SALISBURY, AT A HIGHLINE CROSSING, 18.0 M
 HU0416'(59.05 FT) EAST OF THE NEAR RAIL, 11.7 M (38.39 FT) NORTH OF UTILITY
 HU0416'POLE NUMBER 47219 94126, 1.4 M (4.59 FT) WEST OF UTILITY POLE NUMBER
 HU0416'47220 94130, 0.3 M (0.98 FT) EAST OF A WITNESS POST, 0.3 M (0.98 FT)
 HU0416'BELOW THE LEVEL OF THE TRACK, AND IN A CONCRETE MONUMENT THAT
 HU0416'PROJECTS 0.05 M (0.16 FT) ABOVE THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1829 ***********************************************************************
 JU1829  DESIGNATION -  F 108
 JU1829  PID         -  JU1829
 JU1829  STATE/COUNTY-  MD/CECIL
 JU1829  COUNTRY     -  US
 JU1829  USGS QUAD   -  ELKTON (2016)
 JU1829
 JU1829                         *CURRENT SURVEY CONTROL
 JU1829  ______________________________________________________________________
 JU1829* NAD 83(1986) POSITION- 39 32 01.2    (N) 075 47 48.1    (W)   HD_HELD2
 JU1829* NAVD 88 ORTHO HEIGHT -     6.522 (meters)       21.40  (feet) ADJUSTED
 JU1829  ______________________________________________________________________
 JU1829  GEOID HEIGHT    -        -33.308 (meters)                     GEOID18
 JU1829  DYNAMIC HEIGHT  -          6.518 (meters)       21.38  (feet) COMP
 JU1829  MODELED GRAVITY -    980,134.5   (mgal)                       NAVD 88
 JU1829
 JU1829  VERT ORDER      -  FIRST     CLASS I
 JU1829
 JU1829.The horizontal coordinates were established by autonomous hand held GPS
 JU1829.observations and have an estimated accuracy of +/- 10 meters.
 JU1829
 JU1829.The orthometric height was determined by differential leveling and
 JU1829.adjusted by the NATIONAL GEODETIC SURVEY
 JU1829.in June 1991.
 JU1829
 JU1829.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1829.GEOID18 height accuracy estimate available here.
 JU1829
 JU1829.Click photographs - Photos may exist for this station.
 JU1829
 JU1829.The dynamic height is computed by dividing the NAVD 88
 JU1829.geopotential number by the normal gravity value computed on the
 JU1829.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1829.degrees latitude (g = 980.6199 gals.).
 JU1829
 JU1829.The modeled gravity was interpolated from observed gravity values.
 JU1829
 JU1829;                    North         East    Units  Estimated Accuracy
 JU1829;SPC MD       -   207,935.      503,449.      MT  (+/- 10 meters HH2 GPS)
 JU1829
 JU1829_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3153376303(NAD 83)
 JU1829
 JU1829                          SUPERSEDED SURVEY CONTROL
 JU1829
 JU1829  NGVD 29 (11/26/84)    6.759  (m)           22.18   (f) ADJUSTED    1 1
 JU1829
 JU1829.Superseded values are not recommended for survey control.
 JU1829
 JU1829.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1829.See file dsdata.pdf to determine how the superseded data were derived.
 JU1829
 JU1829_MARKER: DB = BENCH MARK DISK
 JU1829_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1829_STAMPING: F 108 1963
 JU1829_MARK LOGO: CGS
 JU1829_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU1829_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1829+STABILITY: SURFACE MOTION
 JU1829_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1829+SATELLITE: SATELLITE OBSERVATIONS - November 20, 2011
 JU1829
 JU1829  HISTORY     - Date     Condition        Report By
 JU1829  HISTORY     - 1963     MONUMENTED       CGS
 JU1829  HISTORY     - 1971     GOOD             NGS
 JU1829  HISTORY     - 20010201 GOOD             MDSHA
 JU1829  HISTORY     - 20111120 GOOD             GEOCAC
 JU1829  HISTORY     - 20121127 GOOD             MD-015
 JU1829
 JU1829                          STATION DESCRIPTION
 JU1829
 JU1829'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1829'1.4 MI E FROM CHESAPEAKE CITY.
 JU1829'ABOUT 0.25 MILE NORTHEAST ALONG U.S. HIGHWAY 213 FROM THE
 JU1829'NORTHEAST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1829'DELAWARE CANAL AT CHESAPEAKE CITY, THENCE 0.25 MILE SOUTHEAST
 JU1829'ALONG STATE HIGHWAY 285, THENCE 0.3 MILE SOUTH ALONG STATE
 JU1829'HIGHWAY 284, THENCE 0.65 MILE EAST ALONG STATE HIGHWAY 285, 128
 JU1829'FEET SOUTHWEST OF THE CENTER OF THE JUNCTION OF A FARM ROAD WHICH
 JU1829'LEADS NORTH, 19 1/2 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY,
 JU1829'3 FEET WEST OF POWER POLE NUMBER 30, 1.5 FEET EAST OF A METAL
 JU1829'WITNESS POST, ABOUT 1 1/2 FEET BELOW THE LEVEL OF THE HIGHWAY, AND
 JU1829'SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES.  NOTE-- THE
 JU1829'MARK IS ALSO 0.25 MILE EAST ALONG A STREET AND STATE HIGHWAY 285
 JU1829'FROM THE U.S. HIGHWAY 213 BRIDGE OVER THE CHESAPEAKE AND DELAWARE
 JU1829'CANAL.
 JU1829
 JU1829                          STATION RECOVERY (2001)
 JU1829
 JU1829'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JU1829'RECOVERED AS DESCRIBED.
 JU1829
 JU1829                          STATION RECOVERY (2011)
 JU1829
 JU1829'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JU1829'RECOVERED AS DESCRIBED.
 JU1829
 JU1829                          STATION RECOVERY (2012)
 JU1829
 JU1829'RECOVERY NOTE BY CECIL COUNTY MARYLAND 2012 (DRB)
 JU1829'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1310 ***********************************************************************
 JV1310  DESIGNATION -  F 110
 JV1310  PID         -  JV1310
 JV1310  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1310  COUNTRY     -  US
 JV1310  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1310
 JV1310                         *CURRENT SURVEY CONTROL
 JV1310  ______________________________________________________________________
 JV1310* NAD 83(1986) POSITION- 39 17 16.     (N) 076 32 15.     (W)   SCALED
 JV1310* NAVD 88 ORTHO HEIGHT -    28.290 (meters)       92.81  (feet) POSTED
 JV1310  ______________________________________________________________________
 JV1310  GEOID HEIGHT    -        -32.900 (meters)                     GEOID18
 JV1310  DYNAMIC HEIGHT  -         28.27  (meters)       92.7   (feet) COMP
 JV1310  MODELED GRAVITY -    980,100.0   (mgal)                       NAVD 88
 JV1310
 JV1310  VERT ORDER      -  * POSTED, SEE BELOW
 JV1310
 JV1310.The horizontal coordinates were scaled from a map and have
 JV1310.an estimated accuracy of +/- 6 seconds.
 JV1310
 JV1310.The orthometric height was determined by differential leveling
 JV1310.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV1310
 JV1310.* This is a POSTED BENCH MARK height.
 JV1310
 JV1310.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1310.GEOID18 height accuracy estimate available here.
 JV1310
 JV1310.Click photographs - Photos may exist for this station.
 JV1310
 JV1310.The dynamic height is computed by dividing the NAVD 88
 JV1310.geopotential number by the normal gravity value computed on the
 JV1310.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1310.degrees latitude (g = 980.6199 gals.).
 JV1310
 JV1310.The modeled gravity was interpolated from observed gravity values.
 JV1310
 JV1310;                    North         East    Units  Estimated Accuracy
 JV1310;SPC MD       -   180,060.      439,900.      MT  (+/- 180 meters Scaled)
 JV1310
 JV1310_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ674498(NAD 83)
 JV1310
 JV1310                          SUPERSEDED SURVEY CONTROL
 JV1310
 JV1310  NGVD 29 (11/26/84)   28.532  (m)           93.61   (f) ADJUSTED    1 2
 JV1310
 JV1310.Superseded values are not recommended for survey control.
 JV1310
 JV1310.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1310.See file dsdata.pdf to determine how the superseded data were derived.
 JV1310
 JV1310_MARKER: DB = BENCH MARK DISK
 JV1310_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1310+WITH SETTING: PAVEMENT
 JV1310_SP_SET: SIGN POST BASE
 JV1310_STAMPING: F 110 1965
 JV1310_MARK LOGO: CGS
 JV1310_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1310+STABILITY: SURFACE MOTION
 JV1310
 JV1310  HISTORY     - Date     Condition        Report By
 JV1310  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1310  HISTORY     - 20140517 MARK NOT FOUND   USPSQD
 JV1310
 JV1310                          STATION DESCRIPTION
 JV1310
 JV1310'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1310'3 MI E FROM BALTIMORE.
 JV1310'STATION IS LOCATED 1.2 MILES WEST OF THE NORTH POINT ROAD AND
 JV1310'EASTERN BLVD. INTERCHANGE ALONG EASTERN BLVD. ON THE RIGHT AT
 JV1310'KANE STREET.  40.0 FEET WEST OF THE CENTERLINE OF KANE STREET,
 JV1310'28.0 FEET NORTH OF THE CENTERLINE OF THE WEST BOUND LANE OF
 JV1310'EASTERN BLVD., AND 8.2 FEET WEST-NORTHWEST OF A FIRE BOX POST,
 JV1310'SET FLUSH IN THE CONCRETE BASE OF SIGN POST.
 JV1310
 JV1310                          STATION RECOVERY (2014)
 JV1310
 JV1310'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV1310'THE FIRE BOX POST AND CONCRETE BASE OF A SIGN POST REFERENCES NO
 JV1310'LONGER EXIST. THE NORTH-WEST CORNER PROPERTY AT THE INTERSECTION OF
 JV1310'EASTERN BLVD. AND KANE STREET IS NOW THE SITE OF A VERY LARGE EXON
 JV1310'GAS STATION. THE WHOLE AREA HAVE BASICALLY BEEN PAVED. NO MARKER WAS
 JV1310'FOUND NEAR THE POSITION GIVEN FOR THE MARKER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8900 ***********************************************************************
 HV8900  DESIGNATION -  F 111 RESET
 HV8900  PID         -  HV8900
 HV8900  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8900  COUNTRY     -  US
 HV8900  USGS QUAD   -  MOUNT VERNON (2019)
 HV8900
 HV8900                         *CURRENT SURVEY CONTROL
 HV8900  ______________________________________________________________________
 HV8900* NAD 83(1986) POSITION- 38 39 29.     (N) 077 01 35.     (W)   SCALED
 HV8900* NAVD 88 ORTHO HEIGHT -    46.80  (meters)      153.5   (feet) RESET
 HV8900  ______________________________________________________________________
 HV8900  GEOID HEIGHT    -        -32.549 (meters)                     GEOID18
 HV8900  VERT ORDER      -  THIRD
 HV8900
 HV8900.The horizontal coordinates were scaled from a map and have
 HV8900.an estimated accuracy of +/- 6 seconds.
 HV8900
 HV8900.The orthometric height was computed from unverified reset data.
 HV8900
 HV8900.No vertical observational check was made to the station.
 HV8900
 HV8900.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8900.GEOID18 height accuracy estimate available here.
 HV8900
 HV8900.Click photographs - Photos may exist for this station.
 HV8900
 HV8900;                    North         East    Units  Estimated Accuracy
 HV8900;SPC MD       -   110,050.      397,700.      MT  (+/- 180 meters Scaled)
 HV8900
 HV8900_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH236807(NAD 83)
 HV8900
 HV8900                          SUPERSEDED SURVEY CONTROL
 HV8900
 HV8900  NGVD 29 (11/18/05)   47.04   (m)          154.3    (f) RESET       3  
 HV8900
 HV8900.Superseded values are not recommended for survey control.
 HV8900
 HV8900.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8900.See file dsdata.pdf to determine how the superseded data were derived.
 HV8900
 HV8900_MARKER: DV = VERTICAL CONTROL DISK
 HV8900_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV8900_SP_SET: HEADWALL
 HV8900_STAMPING: F 111 MDSRC RESET 1986
 HV8900_MARK LOGO: NGS
 HV8900_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8900+STABILITY: SURFACE MOTION
 HV8900
 HV8900  HISTORY     - Date     Condition        Report By
 HV8900  HISTORY     - 1986     MONUMENTED       NGS
 HV8900
 HV8900                          STATION DESCRIPTION
 HV8900
 HV8900'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 HV8900'13.5 KM (8.40 MI) NORTH FROM INDIAN HEAD.
 HV8900'FROM THE INTERSECTION OF STATE HIGHWAYS 210 AND 373, GO SOUTHWEST ON
 HV8900'STATE HIGHWAY 210 FOR 3.4 KM (2.10 MI) TO PINE LANE ON THE RIGHT AND
 HV8900'THE BENCH MARK ON THE RIGHT, 14.2 M (46.6 FT) NORTHWEST FROM THE
 HV8900'CENTER OF THE SOUTH BOUND LANE OF STATE HIGHWAY 210
 HV8900'(INDIAN HEAD HIGHWAY), 35.7 M (117.1 FT) SOUTHWEST FROM THE CENTER OF
 HV8900'PINE LANE, 29.8 M (97.8 FT) SOUTH FROM A POWERLINE POLE WITH NO
 HV8900'NUMBER, 1.1 M (3.6 FT) NORTHEAST FROM THE CENTER OF THE HEADWALL AND
 HV8900'0.2 M (0.7 FT) SOUTHWEST FROM THE NORTHEAST END OF THE HEAD WALL.
 HV8900'THE MARK IS 0.21 METERS  SW FROM  A WITNESS POST
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1285 ***********************************************************************
 JV1285  DESIGNATION -  F 112
 JV1285  PID         -  JV1285
 JV1285  STATE/COUNTY-  MD/BALTIMORE
 JV1285  COUNTRY     -  US
 JV1285  USGS QUAD   -  REISTERSTOWN (2016)
 JV1285
 JV1285                         *CURRENT SURVEY CONTROL
 JV1285  ______________________________________________________________________
 JV1285* NAD 83(1986) POSITION- 39 25 36.4    (N) 076 47 22.2    (W)   HD_HELD2
 JV1285* NAVD 88 ORTHO HEIGHT -   178.058 (meters)      584.18  (feet) ADJUSTED
 JV1285  ______________________________________________________________________
 JV1285  GEOID HEIGHT    -        -32.144 (meters)                     GEOID18
 JV1285  DYNAMIC HEIGHT  -        177.964 (meters)      583.87  (feet) COMP
 JV1285  MODELED GRAVITY -    980,095.2   (mgal)                       NAVD 88
 JV1285
 JV1285  VERT ORDER      -  SECOND    CLASS 0
 JV1285
 JV1285.The horizontal coordinates were established by autonomous hand held GPS
 JV1285.observations and have an estimated accuracy of +/- 10 meters.
 JV1285
 JV1285.The orthometric height was determined by differential leveling and
 JV1285.adjusted by the NATIONAL GEODETIC SURVEY
 JV1285.in June 1991.
 JV1285
 JV1285.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1285.GEOID18 height accuracy estimate available here.
 JV1285
 JV1285.Click photographs - Photos may exist for this station.
 JV1285
 JV1285.The dynamic height is computed by dividing the NAVD 88
 JV1285.geopotential number by the normal gravity value computed on the
 JV1285.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1285.degrees latitude (g = 980.6199 gals.).
 JV1285
 JV1285.The modeled gravity was interpolated from observed gravity values.
 JV1285
 JV1285;                    North         East    Units  Estimated Accuracy
 JV1285;SPC MD       -   195,406.      418,125.      MT  (+/- 10 meters HH2 GPS)
 JV1285
 JV1285_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4597465666(NAD 83)
 JV1285
 JV1285                          SUPERSEDED SURVEY CONTROL
 JV1285
 JV1285  NGVD 29 (11/26/84)  178.272  (m)          584.88   (f) ADJUSTED    2 0
 JV1285
 JV1285.Superseded values are not recommended for survey control.
 JV1285
 JV1285.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1285.See file dsdata.pdf to determine how the superseded data were derived.
 JV1285
 JV1285_MARKER: DB = BENCH MARK DISK
 JV1285_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1285+WITH SETTING: PAVEMENT
 JV1285_SP_SET: FLAG POLE BASE
 JV1285_STAMPING: F 112 1967
 JV1285_MARK LOGO: MDBCSM
 JV1285_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1285+STABILITY: SURFACE MOTION
 JV1285_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1285+SATELLITE: SATELLITE OBSERVATIONS - March 17, 2020
 JV1285
 JV1285  HISTORY     - Date     Condition        Report By
 JV1285  HISTORY     - 1967     MONUMENTED       MDBCSM
 JV1285  HISTORY     - 19900719 GOOD             NGS
 JV1285  HISTORY     - 20100217 GOOD             JARICE
 JV1285  HISTORY     - 20140924 GOOD             INDIV
 JV1285  HISTORY     - 20200317 GOOD             WTBALL
 JV1285
 JV1285                          STATION DESCRIPTION
 JV1285
 JV1285'DESCRIBED BY MD BUR SURV AND MAPS 1967
 JV1285'0.7 MI NW FROM OWINGS MILL.
 JV1285'FROM THE BRIDGE OVER THE BALTIMORE BELTWAY PROCEED NORTHWEST
 JV1285'ALONG U.S. 140 (REISTERSTOWN ROAD) FOR 4.1 MILES AND STATION ON
 JV1285'THE WEST SIDE OF U.S. 140.  SET IN A DRILLED HOLE IN THE CONCRETE
 JV1285'BASE OF THE FLAG POLE OF OWINGS MILL ELEMENTARY SCHOOL.  50.0
 JV1285'FEET WEST OF THE CENTERLINE OF DRIVEWAY, 24.0 FEET SOUTH OF THE
 JV1285'SOUTH EDGE OF THE NORTHERLY ENTRANCE TO THE SCHOOL, 8.2 FEET
 JV1285'WEST OF THE WEST EDGE OF SIDEWALK AND 1.5 FEET SOUTHEAST OF THE
 JV1285'FLAG POLE.  A STANDARD DISK STAMPED F-112 1967 U.S.C. AND G.S.
 JV1285
 JV1285                          STATION RECOVERY (1990)
 JV1285
 JV1285'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV1285'RECOVERED IN GOOD CONDITION.
 JV1285
 JV1285                          STATION RECOVERY (2010)
 JV1285
 JV1285'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV1285'RECOVERED IN GOOD CONDITION.
 JV1285
 JV1285                          STATION RECOVERY (2014)
 JV1285
 JV1285'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (GDS)
 JV1285'RECOVERED BY DEWBERRY CONSULTANTS LLC.
 JV1285
 JV1285                          STATION RECOVERY (2020)
 JV1285
 JV1285'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV1285'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6401 ***********************************************************************
 JV6401  DESIGNATION -  F 113
 JV6401  PID         -  JV6401
 JV6401  STATE/COUNTY-  MD/MONTGOMERY
 JV6401  COUNTRY     -  US
 JV6401  USGS QUAD   -  ROCKVILLE (2016)
 JV6401
 JV6401                         *CURRENT SURVEY CONTROL
 JV6401  ______________________________________________________________________
 JV6401* NAD 83(1986) POSITION- 39 07 27.     (N) 077 13 20.     (W)   SCALED
 JV6401* NAVD 88 ORTHO HEIGHT -   115.809 (meters)      379.95  (feet) ADJUSTED
 JV6401  ______________________________________________________________________
 JV6401  GEOID HEIGHT    -        -31.739 (meters)                     GEOID18
 JV6401  DYNAMIC HEIGHT  -        115.749 (meters)      379.75  (feet) COMP
 JV6401  MODELED GRAVITY -    980,102.2   (mgal)                       NAVD 88
 JV6401
 JV6401  VERT ORDER      -  FIRST     CLASS II
 JV6401
 JV6401.The horizontal coordinates were scaled from a map and have
 JV6401.an estimated accuracy of +/- 6 seconds.
 JV6401
 JV6401.The orthometric height was determined by differential leveling and
 JV6401.adjusted by the NATIONAL GEODETIC SURVEY
 JV6401.in April 1999.
 JV6401
 JV6401.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6401.GEOID18 height accuracy estimate available here.
 JV6401
 JV6401.Click photographs - Photos may exist for this station.
 JV6401
 JV6401.The dynamic height is computed by dividing the NAVD 88
 JV6401.geopotential number by the normal gravity value computed on the
 JV6401.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6401.degrees latitude (g = 980.6199 gals.).
 JV6401
 JV6401.The modeled gravity was interpolated from observed gravity values.
 JV6401
 JV6401;                    North         East    Units  Estimated Accuracy
 JV6401;SPC MD       -   161,810.      380,780.      MT  (+/- 180 meters Scaled)
 JV6401
 JV6401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ079329(NAD 83)
 JV6401
 JV6401                          SUPERSEDED SURVEY CONTROL
 JV6401
 JV6401  NAVD 88 (06/15/91)  115.811  (m)          379.96   (f) SUPERSEDED  1 1
 JV6401  NGVD 29 (??/??/92)  116.02   (m)          380.6    (f) COMPUTED    1 1
 JV6401
 JV6401.Superseded values are not recommended for survey control.
 JV6401
 JV6401.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6401.See file dsdata.pdf to determine how the superseded data were derived.
 JV6401
 JV6401_MARKER: DB = BENCH MARK DISK
 JV6401_SETTING: 66 = SET IN ROCK OUTCROP
 JV6401_STAMPING: F 113 1968
 JV6401_MARK LOGO: CGS
 JV6401_PROJECTION: FLUSH
 JV6401_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6401_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6401+STABILITY: POSITION/ELEVATION WELL
 JV6401_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6401+SATELLITE: SATELLITE OBSERVATIONS - September 12, 1997
 JV6401
 JV6401  HISTORY     - Date     Condition        Report By
 JV6401  HISTORY     - 1968     MONUMENTED       CGS
 JV6401  HISTORY     - 19741015 GOOD             NGS
 JV6401  HISTORY     - 19900620 GOOD             NGS
 JV6401  HISTORY     - 19911015 GOOD             NGS
 JV6401  HISTORY     - 19970912 GOOD             NGS
 JV6401
 JV6401                          STATION DESCRIPTION
 JV6401
 JV6401'DESCRIBED BY COAST AND GEODETIC SURVEY 1968
 JV6401'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6401'TECHNOLOGY GROUNDS, ABOUT 0.2 MI (0.32 KM) SOUTHWEST ACROSS COUNTRY
 JV6401'FROM BUILDING 235 WHICH IS NEAR THE EAST END OF CENTER DRIVE, ON THE
 JV6401'EAST SLOPE OF THE EAST BANK OF A DEEP RAVINE, SET IN THE TOP OF AND
 JV6401'HIGHEST POINT OF A ROCK OUTCROP WHICH IS CONNECTED TO AN OUTCROP
 JV6401'ABOUT 50 FT (15.24 M) LONG AND 25 FT (7.62 M) WIDE, 12.7 FT (3.87 M)
 JV6401'SOUTHEAST OF BENCH MARK RV 1 LOCATED IN THE SAME OUTCROP, 7 FT (2.13
 JV6401'M) EAST OF A SMALL WILD CHERRY TREE, AND ABOUT LEVEL WITH THE GROUND.
 JV6401
 JV6401                          STATION RECOVERY (1974)
 JV6401
 JV6401'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 JV6401'RECOVERED IN GOOD CONDITION.
 JV6401
 JV6401                          STATION RECOVERY (1990)
 JV6401
 JV6401'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6401'RECOVERED IN GOOD CONDITION.
 JV6401
 JV6401                          STATION RECOVERY (1991)
 JV6401
 JV6401'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV6401'RECOVERED IN GOOD CONDITION.
 JV6401
 JV6401                          STATION RECOVERY (1997)
 JV6401
 JV6401'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (RLA)
 JV6401'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0267 ***********************************************************************
 JV0267  DESIGNATION -  F 115
 JV0267  PID         -  JV0267
 JV0267  STATE/COUNTY-  MD/KENT
 JV0267  COUNTRY     -  US
 JV0267  USGS QUAD   -  BETTERTON (2017)
 JV0267
 JV0267                         *CURRENT SURVEY CONTROL
 JV0267  ______________________________________________________________________
 JV0267* NAD 83(1986) POSITION- 39 17 33.     (N) 076 05 09.     (W)   SCALED
 JV0267* NAVD 88 ORTHO HEIGHT -    24.478 (meters)       80.31  (feet) ADJUSTED
 JV0267  ______________________________________________________________________
 JV0267  GEOID HEIGHT    -        -33.334 (meters)                     GEOID18
 JV0267  DYNAMIC HEIGHT  -         24.466 (meters)       80.27  (feet) COMP
 JV0267  MODELED GRAVITY -    980,112.6   (mgal)                       NAVD 88
 JV0267
 JV0267  VERT ORDER      -  FIRST     CLASS II
 JV0267
 JV0267.The horizontal coordinates were scaled from a map and have
 JV0267.an estimated accuracy of +/- 6 seconds.
 JV0267
 JV0267.The orthometric height was determined by differential leveling and
 JV0267.adjusted by the NATIONAL GEODETIC SURVEY
 JV0267.in June 1991.
 JV0267
 JV0267.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0267.GEOID18 height accuracy estimate available here.
 JV0267
 JV0267.Click photographs - Photos may exist for this station.
 JV0267
 JV0267.The dynamic height is computed by dividing the NAVD 88
 JV0267.geopotential number by the normal gravity value computed on the
 JV0267.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0267.degrees latitude (g = 980.6199 gals.).
 JV0267
 JV0267.The modeled gravity was interpolated from observed gravity values.
 JV0267
 JV0267;                    North         East    Units  Estimated Accuracy
 JV0267;SPC MD       -   180,870.      478,860.      MT  (+/- 180 meters Scaled)
 JV0267
 JV0267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ063497(NAD 83)
 JV0267
 JV0267                          SUPERSEDED SURVEY CONTROL
 JV0267
 JV0267  NGVD 29 (11/26/84)   24.719  (m)           81.10   (f) ADJUSTED    1 2
 JV0267
 JV0267.Superseded values are not recommended for survey control.
 JV0267
 JV0267.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0267.See file dsdata.pdf to determine how the superseded data were derived.
 JV0267
 JV0267_MARKER: DB = BENCH MARK DISK
 JV0267_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0267+WITH SETTING: INTO GROUND
 JV0267_STAMPING: F 115 1971
 JV0267_MARK LOGO: CGS
 JV0267_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0267+STABILITY: SURFACE MOTION
 JV0267
 JV0267  HISTORY     - Date     Condition        Report By
 JV0267  HISTORY     - 1971     MONUMENTED       NGS
 JV0267  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JV0267  HISTORY     - 20250416 MARK NOT FOUND   PROFLN
 JV0267
 JV0267                          STATION DESCRIPTION
 JV0267
 JV0267'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0267'1.6 MI NE FROM WORTON.
 JV0267'ABOUT 0.8 MILE NORTH ALONG STATE HIGHWAY 297 FROM THE WORTON
 JV0267'METHODIST CHURCH AT WORTON, THENCE 0.8 MILE NORTHEAST ALONG
 JV0267'STATE HIGHWAY 298, AT THE JUNCTION OF KINNIARD POINT ROAD
 JV0267'LEADING NORTHERLY, 91 FEET NORTH OF THE CENTER OF THE JUNCTION,
 JV0267'85 FEET NORTHWEST OF THE CENTER LINE OF STATE HIGHWAY 298, 29
 JV0267'FEET NORTHEAST OF THE CENTER LINE OF THE ROAD, 2 FEET NORTHWEST
 JV0267'OF A CABLE LINE POLE, 2 FEET SOUTHEAST OF A METAL WITNESS POST,
 JV0267'1 FOOT ABOVE THE LEVEL OF THE HIGHWAY, ON THE TOP OF A 4 FOOT
 JV0267'COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE
 JV0267'DISK IS FLUSH WITH THE GROUND AND ENCASED IN A 4 INCH STEEL
 JV0267'PIPE THAT PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.
 JV0267'NOTE-- MARK MAY BE REACHED BY GOING 0.9 MILE SOUTH ALONG STATE
 JV0267'HIGHWAY 292 FROM THE JUNCTION OF STATE HIGHWAY 566 AT STILLPOND,
 JV0267'THENCE 2.75 MILES SOUTHWEST ALONG STATE HIGHWAY 298.
 JV0267
 JV0267                          STATION RECOVERY (1990)
 JV0267
 JV0267'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0267'MARK NOT FOUND.
 JV0267
 JV0267                          STATION RECOVERY (2025)
 JV0267
 JV0267'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0267'SEARCHED FOR, NOT FOUND, LOOKS LIKE PLOWED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1868 ***********************************************************************
 JU1868  DESIGNATION -  F 118
 JU1868  PID         -  JU1868
 JU1868  STATE/COUNTY-  MD/CECIL
 JU1868  COUNTRY     -  US
 JU1868  USGS QUAD   -  ELKTON (2016)
 JU1868
 JU1868                         *CURRENT SURVEY CONTROL
 JU1868  ______________________________________________________________________
 JU1868* NAD 83(1986) POSITION- 39 36 29.01   (N) 075 52 04.11   (W)   HD_HELD1
 JU1868* NAVD 88 ORTHO HEIGHT -    16.386 (meters)       53.76  (feet) ADJUSTED
 JU1868  ______________________________________________________________________
 JU1868  GEOID HEIGHT    -        -33.159 (meters)                     GEOID18
 JU1868  DYNAMIC HEIGHT  -         16.378 (meters)       53.73  (feet) COMP
 JU1868  MODELED GRAVITY -    980,137.2   (mgal)                       NAVD 88
 JU1868
 JU1868  VERT ORDER      -  FIRST     CLASS I
 JU1868
 JU1868.The horizontal coordinates were determined by differentially corrected
 JU1868.hand held GPS observations or other comparable positioning techniques
 JU1868.and have an estimated accuracy of +/- 3 meters.
 JU1868
 JU1868.The orthometric height was determined by differential leveling and
 JU1868.adjusted by the NATIONAL GEODETIC SURVEY
 JU1868.in June 1991.
 JU1868
 JU1868.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1868.GEOID18 height accuracy estimate available here.
 JU1868
 JU1868.Click photographs - Photos may exist for this station.
 JU1868
 JU1868.The dynamic height is computed by dividing the NAVD 88
 JU1868.geopotential number by the normal gravity value computed on the
 JU1868.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1868.degrees latitude (g = 980.6199 gals.).
 JU1868
 JU1868.The modeled gravity was interpolated from observed gravity values.
 JU1868
 JU1868;                    North         East    Units  Estimated Accuracy
 JU1868;SPC MD       -   216,115.4     497,233.3     MT  (+/- 3 meters HH1 GPS) 
 JU1868
 JU1868_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2550184616(NAD 83)
 JU1868
 JU1868                          SUPERSEDED SURVEY CONTROL
 JU1868
 JU1868  NGVD 29 (11/26/84)   16.623  (m)           54.54   (f) ADJUSTED    1 1
 JU1868
 JU1868.Superseded values are not recommended for survey control.
 JU1868
 JU1868.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1868.See file dsdata.pdf to determine how the superseded data were derived.
 JU1868
 JU1868_MARKER: DB = BENCH MARK DISK
 JU1868_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JU1868+WITH SETTING: INTO GROUND
 JU1868_STAMPING: F 118 1971
 JU1868_MARK LOGO: CGS
 JU1868_PROJECTION: RECESSED 10 CENTIMETERS
 JU1868_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1868+STABILITY: SURFACE MOTION
 JU1868_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1868+SATELLITE: SATELLITE OBSERVATIONS - August 20, 2014
 JU1868
 JU1868  HISTORY     - Date     Condition        Report By
 JU1868  HISTORY     - 1971     MONUMENTED       NGS
 JU1868  HISTORY     - 1982     GOOD             LOCSUR
 JU1868  HISTORY     - 19910216 GOOD             USPSQD
 JU1868  HISTORY     - 20040313 GOOD             GEOCAC
 JU1868  HISTORY     - 20080729 GOOD             UE
 JU1868  HISTORY     - 20140820 GOOD             JARICE
 JU1868
 JU1868                          STATION DESCRIPTION
 JU1868
 JU1868'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1868'2.2 MI W FROM ELKTON.
 JU1868'ABOUT 2.25 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE JUNCTION OF
 JU1868'U.S. HIGHWAY 213 AT ELKTON, ABOUT 0.8 MILE WEST OF TRHE JUNCTION OF
 JU1868'STATE HIGHWAY 7 LEADING WEST AND STATE HIGHWAY 279 LEADING NORTH,
 JU1868'43 FEET NORTH OF THE CENTER LINE OF THE NORTH LANES OF THE
 JU1868'HIGHWAY, 132.0 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE
 JU1868'FELLOWSHIP BAPTIST CHURCH (A SMALL CONCRETE BLOCK BUILDING), 4 1/2
 JU1868'FEET EAST OF A POWER POLE, 4.5 FEET WEST OF A METAL WITNESS POST,
 JU1868'ABOUT 1 FOOT BELOW THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A
 JU1868'4-FOOT SECTION OF COPPER COATED ROD THAT IS ATTACHED TO A METAL
 JU1868'BASE PLATE.  THE DISK IS LEVEL WITH THE SURFACE OF THE GROUND
 JU1868'AND IS PROTECTED BY A 4-INCH METAL PIPE THAT IS LEVEL WITH THE
 JU1868'GROUND.
 JU1868
 JU1868                          STATION RECOVERY (1982)
 JU1868
 JU1868'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
 JU1868'RECOVERED IN GOOD CONDITION.
 JU1868
 JU1868                          STATION RECOVERY (1991)
 JU1868
 JU1868'RECOVERY NOTE BY US POWER SQUADRON 1991 (MWD)
 JU1868'RECOVERED IN GOOD CONDITION.
 JU1868
 JU1868                          STATION RECOVERY (2004)
 JU1868
 JU1868'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JU1868'THE STATION IS APPROXIMATELY 3.8 FEET EAST OF A POWER POLE, WHICH IS
 JU1868'NOW MORE PROMINENTLY NUMBERED 39560 38452.
 JU1868'
 JU1868'NO CONCRETE BLOCK CHURCH WAS OBSERVED.  RIVER ROCK APOSTOLIC FAITH
 JU1868'CHURCH, WITH A METAL FACADE, MAY BE THE SAME BUILDING MENTIONED IN THE
 JU1868'1971 DESCRIPTION, BUT THE EXACT DISTANCE TO THE MARK WAS NOT MEASURED.
 JU1868
 JU1868                          STATION RECOVERY (2008)
 JU1868
 JU1868'RECOVERY NOTE BY URBAN ENGINEERS INC 2008 (WBF)
 JU1868'RECOVERED IN GOOD CONDITION.
 JU1868
 JU1868                          STATION RECOVERY (2014)
 JU1868
 JU1868'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JU1868'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0614 ***********************************************************************
 HU0614  DESIGNATION -  F 119
 HU0614  PID         -  HU0614
 HU0614  STATE/COUNTY-  MD/WICOMICO
 HU0614  COUNTRY     -  US
 HU0614  USGS QUAD   -  HEBRON (2016)
 HU0614
 HU0614                         *CURRENT SURVEY CONTROL
 HU0614  ______________________________________________________________________
 HU0614* NAD 83(1986) POSITION- 38 24 59.     (N) 075 39 44.     (W)   SCALED
 HU0614* NAVD 88 ORTHO HEIGHT -    14.753 (meters)       48.40  (feet) ADJUSTED
 HU0614  ______________________________________________________________________
 HU0614  GEOID HEIGHT    -        -35.709 (meters)                     GEOID18
 HU0614  DYNAMIC HEIGHT  -         14.744 (meters)       48.37  (feet) COMP
 HU0614  MODELED GRAVITY -    980,010.5   (mgal)                       NAVD 88
 HU0614  OBS GRAVITY     -    980,009.1   (mgal)                       GRAV_OBS
 HU0614
 HU0614  VERT ORDER      -  FIRST     CLASS II
 HU0614
 HU0614.The horizontal coordinates were scaled from a map and have
 HU0614.an estimated accuracy of +/- 6 seconds.
 HU0614
 HU0614.The orthometric height was determined by differential leveling and
 HU0614.adjusted by the NATIONAL GEODETIC SURVEY
 HU0614.in June 1991.
 HU0614
 HU0614.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0614.GEOID18 height accuracy estimate available here.
 HU0614
 HU0614.Click photographs - Photos may exist for this station.
 HU0614
 HU0614.The dynamic height is computed by dividing the NAVD 88
 HU0614.geopotential number by the normal gravity value computed on the
 HU0614.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0614.degrees latitude (g = 980.6199 gals.).
 HU0614
 HU0614.The modeled gravity was interpolated from observed gravity values.
 HU0614
 HU0614.The observed gravity was obtained from relative gravimeter ties
 HU0614.to the IGSN71 gravity network.
 HU0614
 HU0614;                    North         East    Units  Estimated Accuracy
 HU0614;SPC MD       -    84,080.      516,830.      MT  (+/- 180 meters Scaled)
 HU0614
 HU0614_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH421522(NAD 83)
 HU0614
 HU0614                          SUPERSEDED SURVEY CONTROL
 HU0614
 HU0614  NGVD 29 (11/26/84)   14.997  (m)           49.20   (f) ADJUSTED    1 2
 HU0614
 HU0614.Superseded values are not recommended for survey control.
 HU0614
 HU0614.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0614.See file dsdata.pdf to determine how the superseded data were derived.
 HU0614
 HU0614_MARKER: DB = BENCH MARK DISK
 HU0614_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HU0614_STAMPING: F 119 1971
 HU0614_MARK LOGO: CGS
 HU0614_PROJECTION: RECESSED 5 CENTIMETERS
 HU0614_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0614
 HU0614  HISTORY     - Date     Condition        Report By
 HU0614  HISTORY     - 1971     MONUMENTED       NGS
 HU0614  HISTORY     - 20051107 MARK NOT FOUND   USPSQD
 HU0614
 HU0614                          STATION DESCRIPTION
 HU0614
 HU0614'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0614'1.6 MI E FROM HEBRON.
 HU0614'ABOUT 1.6 MILES EAST ALONG STATE HIGHWAY 670 FROM THE POST OFFICE
 HU0614'AT HEBRON, 88 YARDS EAST OF THE CENTER OF THE INTERSECTION OF
 HU0614'U.S. HIGHWAY 50 AND STATE HIGHWAY 670, 110 FEET NORTHEAST OF THE
 HU0614'CENTER LINE OF THE NORTHEAST LANE OF THE HIGHWAY (U.S.), 43 FEET
 HU0614'NORTHWEST OF THE NORTHWEST CORNER OF A 2 STORY FRAME HOUSE, 58
 HU0614'FEET NORTH OF A LONE 50 INCH OAK TREE, 21 1/2 FEET NORTH OF THE
 HU0614'CENTER LINE OF A DRIVEWAY, 14 1/2 FEET EAST OF POWER LINE POLE XB
 HU0614'62 BRACED BY 3 GUY WIRES, 4.2 FEET WEST OF A METAL WITNESS POST,
 HU0614'3 FEET ABOVE THE LEVEL OF THE HIGHWAYS AND IS A DISK ON THE TOP
 HU0614'OF A COPPER COATED STEEL ROD 2 INCHES BELOW THE LEVEL OF THE
 HU0614'GROUND AND ENCASED IN A 5 INCH PIPE THAT IS 1 INCH BELOW THE
 HU0614'LEVEL OF THE GROUND.  THE ROD WAS DRIVEN TO A DEPTH OF 110 FEET
 HU0614'TO REFUSAL.
 HU0614
 HU0614                          STATION RECOVERY (2005)
 HU0614
 HU0614'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 HU0614'REFERENCED TWO STORY HOUSE, TELEPHONE POLE AND WITNESS POST DO NOT
 HU0614'EXIST.  THE INTERSECTION HAS BEEN WIDENED AND ENLARGED.  THERE IS
 HU0614'EVIDENCE OF EXTENSIVE GRADING, BANK CONSTRUCTION AND DRAINAGE DITCH
 HU0614'CONSTRUCTION IN THE AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1856 ***********************************************************************
 JV1856  DESIGNATION -  F 12
 JV1856  PID         -  JV1856
 JV1856  STATE/COUNTY-  MD/FREDERICK
 JV1856  COUNTRY     -  US
 JV1856  USGS QUAD   -  WOODSBORO (2016)
 JV1856
 JV1856                         *CURRENT SURVEY CONTROL
 JV1856  ______________________________________________________________________
 JV1856* NAD 83(1986) POSITION- 39 33 15.     (N) 077 18 45.     (W)   SCALED
 JV1856* NAVD 88 ORTHO HEIGHT -   132.166 (meters)      433.61  (feet) ADJUSTED
 JV1856  ______________________________________________________________________
 JV1856  GEOID HEIGHT    -        -32.897 (meters)                     GEOID18
 JV1856  DYNAMIC HEIGHT  -        132.095 (meters)      433.38  (feet) COMP
 JV1856  MODELED GRAVITY -    980,086.4   (mgal)                       NAVD 88
 JV1856
 JV1856  VERT ORDER      -  SECOND    CLASS 0
 JV1856
 JV1856.The horizontal coordinates were scaled from a map and have
 JV1856.an estimated accuracy of +/- 6 seconds.
 JV1856
 JV1856.The orthometric height was determined by differential leveling and
 JV1856.adjusted by the NATIONAL GEODETIC SURVEY
 JV1856.in June 1991.
 JV1856
 JV1856.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1856.GEOID18 height accuracy estimate available here.
 JV1856
 JV1856.Click photographs - Photos may exist for this station.
 JV1856
 JV1856.The dynamic height is computed by dividing the NAVD 88
 JV1856.geopotential number by the normal gravity value computed on the
 JV1856.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1856.degrees latitude (g = 980.6199 gals.).
 JV1856
 JV1856.The modeled gravity was interpolated from observed gravity values.
 JV1856
 JV1856;                    North         East    Units  Estimated Accuracy
 JV1856;SPC MD       -   209,580.      373,140.      MT  (+/- 180 meters Scaled)
 JV1856
 JV1856_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ013808(NAD 83)
 JV1856
 JV1856                          SUPERSEDED SURVEY CONTROL
 JV1856
 JV1856  NGVD 29 (11/26/84)  132.372  (m)          434.29   (f) ADJUSTED    2 0
 JV1856
 JV1856.Superseded values are not recommended for survey control.
 JV1856
 JV1856.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1856.See file dsdata.pdf to determine how the superseded data were derived.
 JV1856
 JV1856_MARKER: DB = BENCH MARK DISK
 JV1856_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1856_STAMPING: F 12 1935
 JV1856_MARK LOGO: CGS
 JV1856_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1856+STABILITY: SURFACE MOTION
 JV1856
 JV1856  HISTORY     - Date     Condition        Report By
 JV1856  HISTORY     - 1935     MONUMENTED       CGS
 JV1856  HISTORY     - 1942     GOOD             CGS
 JV1856
 JV1856                          STATION DESCRIPTION
 JV1856
 JV1856'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1856'AT LE GORE.
 JV1856'AT LE GORE, FREDERICK COUNTY, 81 FEET NORTH OF THE PENNSYLVANIA
 JV1856'RAILROAD STATION, AT A ROAD CROSSING, 45 FEET NORTH OF THE
 JV1856'CENTER LINE OF THE ROAD, AND 24 FEET WEST OF THE CENTER LINE
 JV1856'OF THE TRACK.  A STANDARD DISK, STAMPED F 12 1935 AND SET IN
 JV1856'THE TOP OF A CONCRETE POST.
 JV1856
 JV1856                          STATION RECOVERY (1942)
 JV1856
 JV1856'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV1856'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0224 ***********************************************************************
 HV0224  DESIGNATION -  F 120
 HV0224  PID         -  HV0224
 HV0224  STATE/COUNTY-  MD/DORCHESTER
 HV0224  COUNTRY     -  US
 HV0224  USGS QUAD   -  CAMBRIDGE (2016)
 HV0224
 HV0224                         *CURRENT SURVEY CONTROL
 HV0224  ______________________________________________________________________
 HV0224* NAD 83(1986) POSITION- 38 33 04.8    (N) 076 01 03.9    (W)   HD_HELD2
 HV0224* NAVD 88 ORTHO HEIGHT -     3.880 (meters)       12.73  (feet) ADJUSTED
 HV0224  ______________________________________________________________________
 HV0224  GEOID HEIGHT    -        -35.163 (meters)                     GEOID18
 HV0224  DYNAMIC HEIGHT  -          3.878 (meters)       12.72  (feet) COMP
 HV0224  MODELED GRAVITY -    980,016.1   (mgal)                       NAVD 88
 HV0224
 HV0224  VERT ORDER      -  FIRST     CLASS II
 HV0224
 HV0224.The horizontal coordinates were established by autonomous hand held GPS
 HV0224.observations and have an estimated accuracy of +/- 10 meters.
 HV0224
 HV0224.The orthometric height was determined by differential leveling and
 HV0224.adjusted by the NATIONAL GEODETIC SURVEY
 HV0224.in June 1991.
 HV0224
 HV0224.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0224.GEOID18 height accuracy estimate available here.
 HV0224
 HV0224.Click photographs - Photos may exist for this station.
 HV0224
 HV0224.The dynamic height is computed by dividing the NAVD 88
 HV0224.geopotential number by the normal gravity value computed on the
 HV0224.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0224.degrees latitude (g = 980.6199 gals.).
 HV0224
 HV0224.The modeled gravity was interpolated from observed gravity values.
 HV0224
 HV0224;                    North         East    Units  Estimated Accuracy
 HV0224;SPC MD       -    98,662.      485,619.      MT  (+/- 10 meters HH2 GPS)
 HV0224
 HV0224_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1131667480(NAD 83)
 HV0224
 HV0224                          SUPERSEDED SURVEY CONTROL
 HV0224
 HV0224  NGVD 29 (11/26/84)    4.115  (m)           13.50   (f) ADJUSTED    1 2
 HV0224
 HV0224.Superseded values are not recommended for survey control.
 HV0224
 HV0224.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0224.See file dsdata.pdf to determine how the superseded data were derived.
 HV0224
 HV0224_MARKER: DB = BENCH MARK DISK
 HV0224_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0224+WITH SETTING: INTO GROUND
 HV0224_STAMPING: F 120 1971
 HV0224_MARK LOGO: CGS
 HV0224_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0224+STABILITY: SURFACE MOTION
 HV0224_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0224+SATELLITE: SATELLITE OBSERVATIONS - January 07, 2007
 HV0224
 HV0224  HISTORY     - Date     Condition        Report By
 HV0224  HISTORY     - 1971     MONUMENTED       NGS
 HV0224  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV0224  HISTORY     - 20021127 GOOD             USPSQD
 HV0224  HISTORY     - 20041124 GOOD             USPSQD
 HV0224  HISTORY     - 20060106 GOOD             USPSQD
 HV0224  HISTORY     - 20070107 GOOD             USPSQD
 HV0224
 HV0224                          STATION DESCRIPTION
 HV0224
 HV0224'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0224'3.6 MI E FROM CAMBRIDGE.
 HV0224'ABOUT 3.55 MILES EAST ALONG U.S. HIGHWAY 50 FROM THE SOUTH
 HV0224'END OF THE HIGHWAY BRIDGE OVER THE CHOPTANK RIVER AT CAMBRIDGE,
 HV0224'103 FEET SOUTH OF THE CENTER LINE OF THE SOUTH LANES OF THE
 HV0224'HIGHWAY, 216 FEET EAST OF THE CENTER LINE OF THE MEDIAN FOR A
 HV0224'PAVED ROAD, 18 FEET WEST OF THE CENTER LINE OF THE MORE
 HV0224'NORTHEASTERLY DRIVEWAY TO THE DORCHESTER MEMORIAL PARK, 54
 HV0224'FEET SOUTHWEST OF POWER POLE NUMBER 158, 5.7 FEET WEST OF A
 HV0224'LARGE STONE POST, 1 FOOT NORTH OF A FENCE, ABOUT 4 1/2 FEET
 HV0224'BELOW THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-FOOT
 HV0224'SECTION OF COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE
 HV0224'PLATE.  THE DISK IS 4 INCHES BELOW THE SURFACE OF THE GROUND
 HV0224'AND IS PROTECTED BY A 4-INCH ORANGEBURG PIPE THAT IS 3 INCHES
 HV0224'BELOW THE SURFACE OF THE GROUND.
 HV0224
 HV0224                          STATION RECOVERY (2001)
 HV0224
 HV0224'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0224'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0224
 HV0224                          STATION RECOVERY (2002)
 HV0224
 HV0224'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0224'MARK IS 2 INCHES N OF A METAL POST WITH SIGN BM276 AND IS 12 INCHES
 HV0224'BELOW THE SURFACE OF THE GROUND. THE REFERENCED NORTHEASTERLY DRIVEWAY
 HV0224'TO DORCHESTER MEMORIAL PARK HAS BEEN CLOSED TO ACCESS FROM US 50.
 HV0224'REFERENCED FENCE IS HEAVY CHAIN BETWEEN STONE POSTS, AND THE AREA
 HV0224'SHOWS EVIDENCE OF GRADING AND LANDSCAPING.
 HV0224
 HV0224                          STATION RECOVERY (2004)
 HV0224
 HV0224'RECOVERY NOTE BY US POWER SQUADRON 2004 (JKW)
 HV0224'RECOVERED IN GOOD CONDITION.
 HV0224
 HV0224                          STATION RECOVERY (2006)
 HV0224
 HV0224'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV0224'ACCESS TO THIS MARK IS OFF AIREY ROAD.IT IS EAST OF THE ROAD, NEAR THE
 HV0224'OLD ENTRANCE TO THE CEMETARY, OFF ROUTE 50.  THE MARK IS 7 INCHES
 HV0224'BELOW THE SURFACE.
 HV0224
 HV0224                          STATION RECOVERY (2007)
 HV0224
 HV0224'RECOVERY NOTE BY US POWER SQUADRON 2007 (NNH)
 HV0224'BENCH MARK SIGN 276, 8 INCHES BELOW SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0600 ***********************************************************************
 JV0600  DESIGNATION -  F 121
 JV0600  PID         -  JV0600
 JV0600  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0600  COUNTRY     -  US
 JV0600  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0600
 JV0600                         *CURRENT SURVEY CONTROL
 JV0600  ______________________________________________________________________
 JV0600* NAD 83(1986) POSITION- 39 15 08.     (N) 076 38 21.     (W)   SCALED
 JV0600* NAVD 88 ORTHO HEIGHT -    28.802 (meters)       94.49  (feet) ADJUSTED
 JV0600  ______________________________________________________________________
 JV0600  GEOID HEIGHT    -        -32.709 (meters)                     GEOID18
 JV0600  DYNAMIC HEIGHT  -         28.787 (meters)       94.45  (feet) COMP
 JV0600  MODELED GRAVITY -    980,101.3   (mgal)                       NAVD 88
 JV0600
 JV0600  VERT ORDER      -  FIRST     CLASS I
 JV0600
 JV0600.The horizontal coordinates were scaled from a map and have
 JV0600.an estimated accuracy of +/- 6 seconds.
 JV0600
 JV0600.The orthometric height was determined by differential leveling and
 JV0600.adjusted by the NATIONAL GEODETIC SURVEY
 JV0600.in June 1991.
 JV0600
 JV0600.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0600.GEOID18 height accuracy estimate available here.
 JV0600
 JV0600.Click photographs - Photos may exist for this station.
 JV0600
 JV0600.The dynamic height is computed by dividing the NAVD 88
 JV0600.geopotential number by the normal gravity value computed on the
 JV0600.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0600.degrees latitude (g = 980.6199 gals.).
 JV0600
 JV0600.The modeled gravity was interpolated from observed gravity values.
 JV0600
 JV0600;                    North         East    Units  Estimated Accuracy
 JV0600;SPC MD       -   176,070.      431,150.      MT  (+/- 180 meters Scaled)
 JV0600
 JV0600_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ585460(NAD 83)
 JV0600
 JV0600                          SUPERSEDED SURVEY CONTROL
 JV0600
 JV0600  NGVD 29 (11/26/84)   29.043  (m)           95.29   (f) ADJUSTED    1 1
 JV0600
 JV0600.Superseded values are not recommended for survey control.
 JV0600
 JV0600.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0600.See file dsdata.pdf to determine how the superseded data were derived.
 JV0600
 JV0600_MARKER: DB = BENCH MARK DISK
 JV0600_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0600_SP_SET: ABUTMENT
 JV0600_STAMPING: F 121 1971
 JV0600_MARK LOGO: CGS
 JV0600_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0600
 JV0600  HISTORY     - Date     Condition        Report By
 JV0600  HISTORY     - 1971     MONUMENTED       NGS
 JV0600  HISTORY     - 20030923 MARK NOT FOUND   USPSQD
 JV0600
 JV0600                          STATION DESCRIPTION
 JV0600
 JV0600'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0600'AT BALTIMORE.
 JV0600'AT WEST BALTIMORE, SET IN THE TOP OF THE CONCRETE FOUNDATION FOR
 JV0600'THE EAST GUARDRAIL AND DIRECTLY OVER THE EAST END OF THE SOUTH
 JV0600'ABUTMENT OF THE OLD ANNAPOLIS ROAD OVERPASS FOR THE
 JV0600'BALTIMORE-WASHINGTON EXPRESSWAY, 82 FEET NORTH OF THE SOUTH END
 JV0600'OF THE OVERPASS, 21 FEET EAST OF THE CENTER LINE OF THE ROAD,
 JV0600'1 1/2 FEET WEST OF THE WEST EDGE OF THE GUARDRAIL, AND ABOUT 1/2
 JV0600'FOOT ABOVE THE LEVEL OF THE ROAD.
 JV0600
 JV0600                          STATION RECOVERY (2003)
 JV0600
 JV0600'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0600'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0296 ***********************************************************************
 JV0296  DESIGNATION -  F 122
 JV0296  PID         -  JV0296
 JV0296  STATE/COUNTY-  MD/QUEEN ANNES
 JV0296  COUNTRY     -  US
 JV0296  USGS QUAD   -  CENTREVILLE (2017)
 JV0296
 JV0296                         *CURRENT SURVEY CONTROL
 JV0296  ______________________________________________________________________
 JV0296* NAD 83(1986) POSITION- 39 04 43.1    (N) 076 02 04.2    (W)   HD_HELD2
 JV0296* NAVD 88 ORTHO HEIGHT -    13.491 (meters)       44.26  (feet) ADJUSTED
 JV0296  ______________________________________________________________________
 JV0296  GEOID HEIGHT    -        -33.755 (meters)                     GEOID18
 JV0296  DYNAMIC HEIGHT  -         13.483 (meters)       44.24  (feet) COMP
 JV0296  MODELED GRAVITY -    980,095.2   (mgal)                       NAVD 88
 JV0296
 JV0296  VERT ORDER      -  FIRST     CLASS II
 JV0296
 JV0296.The horizontal coordinates were established by autonomous hand held GPS
 JV0296.observations and have an estimated accuracy of +/- 10 meters.
 JV0296
 JV0296.The orthometric height was determined by differential leveling and
 JV0296.adjusted by the NATIONAL GEODETIC SURVEY
 JV0296.in June 1991.
 JV0296
 JV0296.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0296.GEOID18 height accuracy estimate available here.
 JV0296
 JV0296.Click photographs - Photos may exist for this station.
 JV0296
 JV0296.The dynamic height is computed by dividing the NAVD 88
 JV0296.geopotential number by the normal gravity value computed on the
 JV0296.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0296.degrees latitude (g = 980.6199 gals.).
 JV0296
 JV0296.The modeled gravity was interpolated from observed gravity values.
 JV0296
 JV0296;                    North         East    Units  Estimated Accuracy
 JV0296;SPC MD       -   157,178.      483,540.      MT  (+/- 10 meters HH2 GPS)
 JV0296
 JV0296_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1051926012(NAD 83)
 JV0296
 JV0296                          SUPERSEDED SURVEY CONTROL
 JV0296
 JV0296  NGVD 29 (11/26/84)   13.729  (m)           45.04   (f) ADJUSTED    1 2
 JV0296
 JV0296.Superseded values are not recommended for survey control.
 JV0296
 JV0296.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0296.See file dsdata.pdf to determine how the superseded data were derived.
 JV0296
 JV0296_MARKER: DB = BENCH MARK DISK
 JV0296_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV0296_SP_SET: BOX CULVERT HEADWALL
 JV0296_STAMPING: F 122 1971
 JV0296_MARK LOGO: CGS
 JV0296_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0296+STABILITY: SURFACE MOTION
 JV0296_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0296+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV0296
 JV0296  HISTORY     - Date     Condition        Report By
 JV0296  HISTORY     - 1971     MONUMENTED       NGS
 JV0296  HISTORY     - 20000319 GOOD             USPSQD
 JV0296  HISTORY     - 20060318 GOOD             USPSQD
 JV0296  HISTORY     - 20140821 GOOD             USPSQD
 JV0296  HISTORY     - 20250731 GOOD             PROFLN
 JV0296
 JV0296                          STATION DESCRIPTION
 JV0296
 JV0296'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0296'ABOUT 3.1 MILES NORTHEAST ALONG U.S. HIGHWAY 213 FROM THE
 JV0296'COURTHOUSE AT CENTREVILLE, SET ON THE TOP OF THE NORTHEAST END
 JV0296'OF THE SOUTHEAST CONCRETE HEADWALL FOR A BOX CULVERT WITH
 JV0296'PARTITIONS UNDER THE HIGHWAY FOR ISLAND CREEK, 21.9 FEET
 JV0296'SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, 1 FOOT ABOVE THE
 JV0296'LEVEL OF THE HIGHWAY.
 JV0296
 JV0296                          STATION RECOVERY (2000)
 JV0296
 JV0296'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 JV0296'RECOVERED IN GOOD CONDITION.
 JV0296
 JV0296                          STATION RECOVERY (2006)
 JV0296
 JV0296'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JV0296'RECOVERED IN GOOD CONDITION.
 JV0296
 JV0296                          STATION RECOVERY (2014)
 JV0296
 JV0296'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV0296'RECOVERED IN GOOD CONDITION.
 JV0296
 JV0296                          STATION RECOVERY (2025)
 JV0296
 JV0296'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0296'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0825 ***********************************************************************
 HV0825  DESIGNATION -  F 123
 HV0825  PID         -  HV0825
 HV0825  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0825  COUNTRY     -  US
 HV0825  USGS QUAD   -  BRANDYWINE (2016)
 HV0825
 HV0825                         *CURRENT SURVEY CONTROL
 HV0825  ______________________________________________________________________
 HV0825* NAD 83(1986) POSITION- 38 43 13.     (N) 076 50 40.     (W)   SCALED
 HV0825* NAVD 88 ORTHO HEIGHT -    59.772 (meters)      196.10  (feet) ADJUSTED
 HV0825  ______________________________________________________________________
 HV0825  GEOID HEIGHT    -        -32.847 (meters)                     GEOID18
 HV0825  DYNAMIC HEIGHT  -         59.738 (meters)      195.99  (feet) COMP
 HV0825  MODELED GRAVITY -    980,052.6   (mgal)                       NAVD 88
 HV0825
 HV0825  VERT ORDER      -  FIRST     CLASS II
 HV0825
 HV0825.The horizontal coordinates were scaled from a map and have
 HV0825.an estimated accuracy of +/- 6 seconds.
 HV0825
 HV0825.The orthometric height was determined by differential leveling and
 HV0825.adjusted by the NATIONAL GEODETIC SURVEY
 HV0825.in June 1991.
 HV0825
 HV0825.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0825.GEOID18 height accuracy estimate available here.
 HV0825
 HV0825.Click photographs - Photos may exist for this station.
 HV0825
 HV0825.The dynamic height is computed by dividing the NAVD 88
 HV0825.geopotential number by the normal gravity value computed on the
 HV0825.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0825.degrees latitude (g = 980.6199 gals.).
 HV0825
 HV0825.The modeled gravity was interpolated from observed gravity values.
 HV0825
 HV0825;                    North         East    Units  Estimated Accuracy
 HV0825;SPC MD       -   116,970.      413,530.      MT  (+/- 180 meters Scaled)
 HV0825
 HV0825_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH396873(NAD 83)
 HV0825
 HV0825                          SUPERSEDED SURVEY CONTROL
 HV0825
 HV0825  NGVD 29 (11/26/84)   60.002  (m)          196.86   (f) ADJUSTED    1 2
 HV0825
 HV0825.Superseded values are not recommended for survey control.
 HV0825
 HV0825.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0825.See file dsdata.pdf to determine how the superseded data were derived.
 HV0825
 HV0825_MARKER: DB = BENCH MARK DISK
 HV0825_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0825_SP_SET: BOX CULVERT
 HV0825_STAMPING: F 123 1971
 HV0825_MARK LOGO: CGS
 HV0825_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0825+STABILITY: SURFACE MOTION
 HV0825
 HV0825  HISTORY     - Date     Condition        Report By
 HV0825  HISTORY     - 1971     MONUMENTED       NGS
 HV0825  HISTORY     - 1975     GOOD             NGS
 HV0825
 HV0825                          STATION DESCRIPTION
 HV0825
 HV0825'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0825'1.4 MI SW FROM CHELTENHAM.
 HV0825'ABOUT 1.45 MILES SOUTHWEST ALONG U.S. HIGHWAY 301 FROM THE JUNCTION
 HV0825'OF SURRATTS ROAD AT CHELTENHAM, 59 1/2 FEET SOUTHEAST OF THE
 HV0825'CENTER LINE OF THE NORTHBOUND LANE OF THE HIGHWAY, SET IN TOP
 HV0825'OF THE WEST END OF THE NORTHEAST WING WALL FOR  A 6-FOOT CONCRETE
 HV0825'BOX CULVERT UNDER U.S. HIGHWAY 301 AND AT THE NORTHEAST END OF
 HV0825'THE SOUTHEAST CONCRETE HEADWALL FOR CULVERT, ABOUT 15 FEET BELOW
 HV0825'THE LEVEL OF THE HIGHWAY.
 HV0825
 HV0825                          STATION RECOVERY (1975)
 HV0825
 HV0825'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0825'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0522 ***********************************************************************
 JV0522  DESIGNATION -  F 125
 JV0522  PID         -  JV0522
 JV0522  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0522  COUNTRY     -  US
 JV0522  USGS QUAD   -  GIBSON ISLAND (2017)
 JV0522
 JV0522                         *CURRENT SURVEY CONTROL
 JV0522  ______________________________________________________________________
 JV0522* NAD 83(1986) POSITION- 39 01 12.7    (N) 076 29 46.7    (W)   HD_HELD2
 JV0522* NAVD 88 ORTHO HEIGHT -    17.413 (meters)       57.13  (feet) ADJUSTED
 JV0522  ______________________________________________________________________
 JV0522  GEOID HEIGHT    -        -33.265 (meters)                     GEOID18
 JV0522  DYNAMIC HEIGHT  -         17.403 (meters)       57.10  (feet) COMP
 JV0522  MODELED GRAVITY -    980,074.5   (mgal)                       NAVD 88
 JV0522
 JV0522  VERT ORDER      -  FIRST     CLASS II
 JV0522
 JV0522.The horizontal coordinates were established by autonomous hand held GPS
 JV0522.observations and have an estimated accuracy of +/- 10 meters.
 JV0522
 JV0522.The orthometric height was determined by differential leveling and
 JV0522.adjusted by the NATIONAL GEODETIC SURVEY
 JV0522.in June 1991.
 JV0522
 JV0522.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0522.GEOID18 height accuracy estimate available here.
 JV0522
 JV0522.Click photographs - Photos may exist for this station.
 JV0522
 JV0522.The dynamic height is computed by dividing the NAVD 88
 JV0522.geopotential number by the normal gravity value computed on the
 JV0522.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0522.degrees latitude (g = 980.6199 gals.).
 JV0522
 JV0522.The modeled gravity was interpolated from observed gravity values.
 JV0522
 JV0522;                    North         East    Units  Estimated Accuracy
 JV0522;SPC MD       -   150,368.      443,619.      MT  (+/- 10 meters HH2 GPS)
 JV0522
 JV0522_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7046620082(NAD 83)
 JV0522
 JV0522                          SUPERSEDED SURVEY CONTROL
 JV0522
 JV0522  NGVD 29 (11/26/84)   17.656  (m)           57.93   (f) ADJUSTED    1 2
 JV0522
 JV0522.Superseded values are not recommended for survey control.
 JV0522
 JV0522.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0522.See file dsdata.pdf to determine how the superseded data were derived.
 JV0522
 JV0522_MARKER: DB = BENCH MARK DISK
 JV0522_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0522+WITH SETTING: INTO GROUND
 JV0522_STAMPING: F 125 1971
 JV0522_MARK LOGO: CGS
 JV0522_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0522+STABILITY: SURFACE MOTION
 JV0522
 JV0522  HISTORY     - Date     Condition        Report By
 JV0522  HISTORY     - 1971     MONUMENTED       NGS
 JV0522
 JV0522                          STATION DESCRIPTION
 JV0522
 JV0522'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0522'2.2 MI NW FROM ANNAPOLIS.
 JV0522'ABOUT 1.6 MILES NORTHWEST ALONG STATE HIGHWAY 450 FROM THE NORTHEAST
 JV0522'END OF THE HIGHWAY BRIDGE OVER THE SEVERN RIVER AT ANNAPOLIS,
 JV0522'THENCE 0.55 MILE NORTHWEST ALONG STATE HIGHWAY 2, ABOUT 0.7 MILE
 JV0522'SOUTHEAST OF THE JUNCTION OF ARNOLD ROAD LEADING WEST, NEAR THE
 JV0522'JUNCTION OF CHATAUGUA ROAD LEADING NORTHEAST, 36 FEET NORTHEAST
 JV0522'OF THE CENTER LINE OF THE NORTHEAST LANES OF THE HIGHWAY, 142 1/2
 JV0522'FEET NORTHWEST OF THE CENTER LINE OF THE NORTHWEST DRIVE TO
 JV0522'CHATAUGUA ROAD, 106 FEET NORTHWEST OF A 36-INCH COTTONWOOD TREE AT
 JV0522'THE ENTRANCE TO THE DRIVE, 4 1/2 FEET SOUTHWEST OF POWER POLE
 JV0522'NUMBER 399121, ABOUT 0.55 MILE NORTHWEST OF THE INTERCHANGE
 JV0522'OF STATE HIGHWAY 2, U.S. HIGHWAYS 50 AND 301, AND STATE HIGHWAY 450,
 JV0522'3 FEET SOUTHEAST OF A METAL WITNESS POST, ABOUT LEVEL WITH THE
 JV0522'HIGHWAY, AND ON THE TOP OF A 4-FOOT SECTION OF COPPER COATED ROD
 JV0522'THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS LEVEL WITH
 JV0522'THE SURFACE OF THE GROUND AND IS PROTECTED BY A 4-INCH METAL
 JV0522'PIPE THAT PROJECTS 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0298 ***********************************************************************
 HV0298  DESIGNATION -  F 126
 HV0298  PID         -  HV0298
 HV0298  STATE/COUNTY-  MD/QUEEN ANNES
 HV0298  COUNTRY     -  US
 HV0298  USGS QUAD   -  KENT ISLAND (2016)
 HV0298
 HV0298                         *CURRENT SURVEY CONTROL
 HV0298  ______________________________________________________________________
 HV0298* NAD 83(1986) POSITION- 38 58 50.8    (N) 076 19 49.0    (W)   HD_HELD2
 HV0298* NAVD 88 ORTHO HEIGHT -     3.582 (meters)       11.75  (feet) ADJUSTED
 HV0298  ______________________________________________________________________
 HV0298  GEOID HEIGHT    -        -33.567 (meters)                     GEOID18
 HV0298  DYNAMIC HEIGHT  -          3.580 (meters)       11.75  (feet) COMP
 HV0298  MODELED GRAVITY -    980,081.6   (mgal)                       NAVD 88
 HV0298  OBS GRAVITY     -    980,084.3   (mgal)                       GRAV_OBS
 HV0298
 HV0298  VERT ORDER      -  FIRST     CLASS II
 HV0298
 HV0298.The horizontal coordinates were established by autonomous hand held GPS
 HV0298.observations and have an estimated accuracy of +/- 10 meters.
 HV0298
 HV0298.The orthometric height was determined by differential leveling and
 HV0298.adjusted by the NATIONAL GEODETIC SURVEY
 HV0298.in June 1991.
 HV0298
 HV0298.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0298.GEOID18 height accuracy estimate available here.
 HV0298
 HV0298.Click photographs - Photos may exist for this station.
 HV0298
 HV0298.The dynamic height is computed by dividing the NAVD 88
 HV0298.geopotential number by the normal gravity value computed on the
 HV0298.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0298.degrees latitude (g = 980.6199 gals.).
 HV0298
 HV0298.The modeled gravity was interpolated from observed gravity values.
 HV0298
 HV0298.The observed gravity was obtained from relative gravimeter ties
 HV0298.to the IGSN71 gravity network.
 HV0298
 HV0298;                    North         East    Units  Estimated Accuracy
 HV0298;SPC MD       -   146,085.      458,028.      MT  (+/- 10 meters HH2 GPS)
 HV0298
 HV0298_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8477515485(NAD 83)
 HV0298
 HV0298                          SUPERSEDED SURVEY CONTROL
 HV0298
 HV0298  NGVD 29 (11/26/84)    3.820  (m)           12.53   (f) ADJUSTED    1 2
 HV0298
 HV0298.Superseded values are not recommended for survey control.
 HV0298
 HV0298.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0298.See file dsdata.pdf to determine how the superseded data were derived.
 HV0298
 HV0298_MARKER: DB = BENCH MARK DISK
 HV0298_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0298+WITH SETTING: INTO GROUND
 HV0298_STAMPING: F 126 1971
 HV0298_MARK LOGO: CGS
 HV0298_PROJECTION: RECESSED 15 CENTIMETERS
 HV0298_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0298_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0298_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0298+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2012
 HV0298
 HV0298  HISTORY     - Date     Condition        Report By
 HV0298  HISTORY     - 1971     MONUMENTED       NGS
 HV0298  HISTORY     - 19910301 GOOD             MDSHA
 HV0298  HISTORY     - 20000111 GOOD             USPSQD
 HV0298  HISTORY     - 20010331 GOOD             NGS
 HV0298  HISTORY     - 20050606 GOOD             USPSQD
 HV0298  HISTORY     - 20120726 GOOD             ARCSHE
 HV0298
 HV0298                          STATION DESCRIPTION
 HV0298
 HV0298'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0298'0.6 MI W FROM STEVENSVILLE.
 HV0298'ABOUT 0.65 MILE WEST ALONG U.S. HIGHWAY 301 AND 50 FROM THE
 HV0298'INTERSECTION OF STATE HIGHWAY 8 AT STEVENSVILLE, ABOUT 0.6 MILE
 HV0298'EAST OF THE EAST END OF THE LARGE HIGHWAY BRIDGE OVER THE
 HV0298'CHESAPEAKE BAY, 271.7 FEET SOUTHEAST OF THE SOUTHEAST END OF THE
 HV0298'SOUTHEAST CONCRETE WING WALL FOR THE SOUTHWEST HEADWALL OF A
 HV0298'36-INCH PIPE CULVERT UNDER THE HIGHWAY, 67 1/2 FEET NORTHWEST OF
 HV0298'POWER LINE POLE NO. 1511-351N, 47.8 FEET SOUTHWEST OF THE CENTER
 HV0298'LINE OF THE EASTBOUND LANE OF THE HIGHWAY, 1 FOOT NORTHEAST OF A
 HV0298'FENCE LINE, 1.8 FEET SOUTHWEST OF A METAL WITNESS POST, ABOUT
 HV0298'LEVEL WITH THE HIGHWAY, ON THE TOP OF A 4 FOOT COPPER COATED
 HV0298'STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS
 HV0298'ONE INCH BELOW THE LEVEL OF THE GROUND AND ENCASED IN A 4-INCH
 HV0298'IRON PIPE THAT PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.
 HV0298
 HV0298                          STATION RECOVERY (1991)
 HV0298
 HV0298'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 HV0298'RECOVERED IN GOOD CONDITION.  ADDITIONAL INFORMATION AND REFERENCE
 HV0298'TIES FOLLOWS.  TO REACH FROM THE EAST END OF THE U.S. HIGHWAY 50 AND
 HV0298'301 BRIDGE OVER THE CHESAPEAKE BAY, GO EAST ON U.S. HIGHWAYS 50 AND
 HV0298'301 FOR 0.55 MI (0.89 KM) TO THE MARKER ON THE RIGHT.  IT IS 54.5 FT
 HV0298'(16.6 M) SOUTH-SOUTHWEST OF THE CENTER OF THE EASTBOUND LANE OF U.S.
 HV0298'HIGHWAYS 50 AND 301, 55.0 FT (16.8 M) NORTH-NORTHEAST OF THE CENTER
 HV0298'OF PIER ONE ROAD, 78.4 FT (23.9 M) NORTH-NORTHEAST OF A POWERLINE
 HV0298'POLE NUMBERED 36 12 6 54, 76.0 FT (23.2 M) NORTHWEST OF A POWERLINE
 HV0298'POLE NUMBERED 26232 1-5757, 0.8 FT (0.2 M) SOUTH OF A CHAIN LINK
 HV0298'FENCE AND 1.9 FT (0.6 M) SOUTHEAST OF A WITNESS POST,SET IN A METAL
 HV0298'ROD WITH A BASE PLATE DRIVEN 1.5 METERS AND PROJECTING 2 INCHES.
 HV0298
 HV0298                          STATION RECOVERY (2000)
 HV0298
 HV0298'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 HV0298'DISK IS NOW 2 INCHES BELOW GROUND LEVEL.  POWER POLE 36-12-6-54 DOES
 HV0298'NOT EXIST.
 HV0298
 HV0298                          STATION RECOVERY (2001)
 HV0298
 HV0298'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0298'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0298
 HV0298                          STATION RECOVERY (2005)
 HV0298
 HV0298'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HV0298'DISK IS NOW 6 INCHES BELOW GROUND LEVEL.
 HV0298
 HV0298                          STATION RECOVERY (2012)
 HV0298
 HV0298'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2012 (MRA)
 HV0298'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0540 ***********************************************************************
 HV0540  DESIGNATION -  F 128
 HV0540  PID         -  HV0540
 HV0540  STATE/COUNTY-  MD/ST MARYS
 HV0540  COUNTRY     -  US
 HV0540  USGS QUAD   -  LEONARDTOWN (2016)
 HV0540
 HV0540                         *CURRENT SURVEY CONTROL
 HV0540  ______________________________________________________________________
 HV0540* NAD 83(1986) POSITION- 38 19 08.     (N) 076 41 03.     (W)   SCALED
 HV0540* NAVD 88 ORTHO HEIGHT -    27.989 (meters)       91.83  (feet) ADJUSTED
 HV0540  ______________________________________________________________________
 HV0540  GEOID HEIGHT    -        -33.782 (meters)                     GEOID18
 HV0540  DYNAMIC HEIGHT  -         27.972 (meters)       91.77  (feet) COMP
 HV0540  MODELED GRAVITY -    980,033.8   (mgal)                       NAVD 88
 HV0540
 HV0540  VERT ORDER      -  FIRST     CLASS II
 HV0540
 HV0540.The horizontal coordinates were scaled from a map and have
 HV0540.an estimated accuracy of +/- 6 seconds.
 HV0540
 HV0540.The orthometric height was determined by differential leveling and
 HV0540.adjusted by the NATIONAL GEODETIC SURVEY
 HV0540.in June 1991.
 HV0540
 HV0540.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0540.GEOID18 height accuracy estimate available here.
 HV0540
 HV0540.Click photographs - Photos may exist for this station.
 HV0540
 HV0540.The dynamic height is computed by dividing the NAVD 88
 HV0540.geopotential number by the normal gravity value computed on the
 HV0540.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0540.degrees latitude (g = 980.6199 gals.).
 HV0540
 HV0540.The modeled gravity was interpolated from observed gravity values.
 HV0540
 HV0540;                    North         East    Units  Estimated Accuracy
 HV0540;SPC MD       -    72,450.      427,620.      MT  (+/- 180 meters Scaled)
 HV0540
 HV0540_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH527425(NAD 83)
 HV0540
 HV0540                          SUPERSEDED SURVEY CONTROL
 HV0540
 HV0540  NGVD 29 (11/26/84)   28.230  (m)           92.62   (f) ADJUSTED    1 2
 HV0540
 HV0540.Superseded values are not recommended for survey control.
 HV0540
 HV0540.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0540.See file dsdata.pdf to determine how the superseded data were derived.
 HV0540
 HV0540_MARKER: DB = BENCH MARK DISK
 HV0540_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HV0540_SP_SET: CULVERT WINGWALL
 HV0540_STAMPING: F 128 1971
 HV0540_MARK LOGO: CGS
 HV0540_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0540_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0540+STABILITY: SURFACE MOTION
 HV0540
 HV0540  HISTORY     - Date     Condition        Report By
 HV0540  HISTORY     - 1971     MONUMENTED       NGS
 HV0540  HISTORY     - 20020329 GOOD             MDSHA
 HV0540
 HV0540                          STATION DESCRIPTION
 HV0540
 HV0540'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0540'2 MI SE FROM CLEMENTS.
 HV0540'ABOUT 2.05 MILES SOUTHEAST ALONG STATE HIGHWAY 234 FROM THE POST
 HV0540'OFFICE AT CLEMENTS, SET ON THE TOP OF THE SOUTH CONCRETE WING WALL
 HV0540'AND AT THE EAST END OF THE SOUTH CONCRETE HEADWALL FOR 2 4-FOOT
 HV0540'PIPE CULVERT UNDER THE HIGHWAY, 0.2 MILE EAST OF THE JUNCTION OF
 HV0540'BIG CHESTNUT ROAD LEADING SOUTH, 26 FEET SOUTH OF THE CENTER
 HV0540'LINE OF THE HIGHWAY, 210 FEET SOUTHEAST OF THE CENTER OF THE
 HV0540'JUNCTION OF A GRAVEL ROAD LEADING NORTH TO A HOUSE, AND 1 FOOT
 HV0540'BELOW THE LEVEL OF THE HIGHWAY.
 HV0540
 HV0540                          STATION RECOVERY (2002)
 HV0540
 HV0540'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0540'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0613 ***********************************************************************
 HV0613  DESIGNATION -  F 129
 HV0613  PID         -  HV0613
 HV0613  STATE/COUNTY-  MD/CHARLES
 HV0613  COUNTRY     -  US
 HV0613  USGS QUAD   -  POPES CREEK (2016)
 HV0613
 HV0613                         *CURRENT SURVEY CONTROL
 HV0613  ______________________________________________________________________
 HV0613* NAD 83(1986) POSITION- 38 23 58.8    (N) 076 57 32.3    (W)   HD_HELD2
 HV0613* NAVD 88 ORTHO HEIGHT -    38.948 (meters)      127.78  (feet) ADJUSTED
 HV0613  ______________________________________________________________________
 HV0613  GEOID HEIGHT    -        -33.401 (meters)                     GEOID18
 HV0613  DYNAMIC HEIGHT  -         38.924 (meters)      127.70  (feet) COMP
 HV0613  MODELED GRAVITY -    980,007.2   (mgal)                       NAVD 88
 HV0613
 HV0613  VERT ORDER      -  FIRST     CLASS II
 HV0613
 HV0613.The horizontal coordinates were established by autonomous hand held GPS
 HV0613.observations and have an estimated accuracy of +/- 10 meters.
 HV0613
 HV0613.The orthometric height was determined by differential leveling and
 HV0613.adjusted by the NATIONAL GEODETIC SURVEY
 HV0613.in June 1991.
 HV0613
 HV0613.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0613.GEOID18 height accuracy estimate available here.
 HV0613
 HV0613.Click photographs - Photos may exist for this station.
 HV0613
 HV0613.The dynamic height is computed by dividing the NAVD 88
 HV0613.geopotential number by the normal gravity value computed on the
 HV0613.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0613.degrees latitude (g = 980.6199 gals.).
 HV0613
 HV0613.The modeled gravity was interpolated from observed gravity values.
 HV0613
 HV0613;                    North         East    Units  Estimated Accuracy
 HV0613;SPC MD       -    81,367.      403,584.      MT  (+/- 10 meters HH2 GPS)
 HV0613
 HV0613_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2893751977(NAD 83)
 HV0613
 HV0613                          SUPERSEDED SURVEY CONTROL
 HV0613
 HV0613  NGVD 29 (11/26/84)   39.190  (m)          128.58   (f) ADJUSTED    1 2
 HV0613
 HV0613.Superseded values are not recommended for survey control.
 HV0613
 HV0613.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0613.See file dsdata.pdf to determine how the superseded data were derived.
 HV0613
 HV0613_MARKER: DB = BENCH MARK DISK
 HV0613_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0613+WITH SETTING: INTO GROUND
 HV0613_STAMPING: F 129 1971
 HV0613_MARK LOGO: CGS
 HV0613_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0613+STABILITY: SURFACE MOTION
 HV0613_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0613+SATELLITE: SATELLITE OBSERVATIONS - August 13, 2005
 HV0613
 HV0613  HISTORY     - Date     Condition        Report By
 HV0613  HISTORY     - 1971     MONUMENTED       NGS
 HV0613  HISTORY     - 20050813 GOOD             GEOCAC
 HV0613
 HV0613                          STATION DESCRIPTION
 HV0613
 HV0613'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0613'1.8 MI N FROM NEWBURG.
 HV0613'ABOUT 0.2 MILE NORTHWEST ALONG STATE HIGHWAY 257 FROM THE POST
 HV0613'OFFICE AT NEWBURG, THENCE 1.6 MILES NORTH ALONG EDGE HILL ROAD
 HV0613'(OLD STATE HIGHWAY 3), 0.2 MILE SOUTHWEST OF A CURVE IN THE ROAD,
 HV0613'24 FEET WEST OF THE CENTER LINE OF EDGE HILL ROAD, 2 1/2 FEET
 HV0613'WEST OF POWER LINE POLE 339, 354 FEET NORTH OF AN ABANDONED FRAME
 HV0613'HOUSE, 24 FEET SOUTH OF A DIRT ROAD, 2 FEET EAST OF A METAL
 HV0613'WITNESS POST, 1/2 FOOT ABOVE THE LEVEL OF THE ROAD AND SET ON THE
 HV0613'TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A
 HV0613'METAL BASE PLATE.  THE ROD PROJECTS 1 INCH ABOVE THE LEVEL OF THE
 HV0613'GROUND AND ENCASED IN A 4 INCH PIPE THAT PROJECTS 2 INCHES ABOVE
 HV0613'THE LEVEL OF THE GROUND.
 HV0613
 HV0613                          STATION RECOVERY (2005)
 HV0613
 HV0613'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 HV0613'LINE POLE 339, MENTIONED IN DESCRIPTION, IS NO LONGER NUMBERED (OR HAS
 HV0613'BEEN REPLACED AT APPROXIMATELY THE SAME LOCATION). IT IS A GUY POLE
 HV0613'OPPOSITE ANOTHER UNNUMBERED POLE ACROSS THE STREET.
 HV0613'
 HV0613'THE DIRT ROAD 24 FEET NORTH OF THE STATION HAS BEEN ABANDONED AND
 HV0613'LARGELY RECLAIMED BY NATURE. IT MAY BE DESCRIBED AS A DIM ROAD. THE
 HV0613'STATION IS ABOUT 34 FEET SOUTH OF A RUSTING SIGN READING, 'NO DUMPING
 HV0613'OF REFUSE,' WHICH IS MOUNTED ON A METAL POLE ON THE NORTH SIDE OF THE
 HV0613'DIM ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1851 ***********************************************************************
 JV1851  DESIGNATION -  F 13
 JV1851  PID         -  JV1851
 JV1851  STATE/COUNTY-  MD/CARROLL
 JV1851  COUNTRY     -  US
 JV1851  USGS QUAD   -  NEW WINDSOR (2016)
 JV1851
 JV1851                         *CURRENT SURVEY CONTROL
 JV1851  ______________________________________________________________________
 JV1851* NAD 83(1986) POSITION- 39 33 23.     (N) 077 02 00.     (W)   SCALED
 JV1851* NAVD 88 ORTHO HEIGHT -   169.756 (meters)      556.94  (feet) ADJUSTED
 JV1851  ______________________________________________________________________
 JV1851  GEOID HEIGHT    -        -32.261 (meters)                     GEOID18
 JV1851  DYNAMIC HEIGHT  -        169.668 (meters)      556.65  (feet) COMP
 JV1851  MODELED GRAVITY -    980,104.2   (mgal)                       NAVD 88
 JV1851
 JV1851  VERT ORDER      -  SECOND    CLASS 0
 JV1851
 JV1851.The horizontal coordinates were scaled from a map and have
 JV1851.an estimated accuracy of +/- 6 seconds.
 JV1851
 JV1851.The orthometric height was determined by differential leveling and
 JV1851.adjusted by the NATIONAL GEODETIC SURVEY
 JV1851.in June 1991.
 JV1851
 JV1851.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1851.GEOID18 height accuracy estimate available here.
 JV1851
 JV1851.Click photographs - Photos may exist for this station.
 JV1851
 JV1851.The dynamic height is computed by dividing the NAVD 88
 JV1851.geopotential number by the normal gravity value computed on the
 JV1851.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1851.degrees latitude (g = 980.6199 gals.).
 JV1851
 JV1851.The modeled gravity was interpolated from observed gravity values.
 JV1851
 JV1851;                    North         East    Units  Estimated Accuracy
 JV1851;SPC MD       -   209,780.      397,140.      MT  (+/- 180 meters Scaled)
 JV1851
 JV1851_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ253804(NAD 83)
 JV1851
 JV1851                          SUPERSEDED SURVEY CONTROL
 JV1851
 JV1851  NGVD 29 (11/26/84)  169.952  (m)          557.58   (f) ADJUSTED    2 0
 JV1851
 JV1851.Superseded values are not recommended for survey control.
 JV1851
 JV1851.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1851.See file dsdata.pdf to determine how the superseded data were derived.
 JV1851
 JV1851_MARKER: DB = BENCH MARK DISK
 JV1851_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1851_STAMPING: F 13 1935
 JV1851_MARK LOGO: CGS
 JV1851_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1851+STABILITY: SURFACE MOTION
 JV1851
 JV1851  HISTORY     - Date     Condition        Report By
 JV1851  HISTORY     - 1935     MONUMENTED       CGS
 JV1851  HISTORY     - 1962     MARK NOT FOUND   MDDT
 JV1851
 JV1851                          STATION DESCRIPTION
 JV1851
 JV1851'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1851'AT AVONDALE.
 JV1851'AT AVONDALE, CARROLL COUNTY, ABOUT 54 FEET SOUTHEAST OF THE
 JV1851'SOUTHEAST CORNER OF THE WESTERN MARYLAND RAILWAY STATION, ABOUT
 JV1851'97 FEET WEST OF BLOCK SIGNAL A 367, AND 36 FEET SOUTH OF THE
 JV1851'CENTER LINE OF THE TRACK.  A STANDARD DISK, STAMPED F 13 1935
 JV1851'AND SET IN THE TOP OF A CONCRETE POST.
 JV1851
 JV1851                          STATION RECOVERY (1962)
 JV1851
 JV1851'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1962
 JV1851'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0040 ***********************************************************************
 HV0040  DESIGNATION -  F 130
 HV0040  PID         -  HV0040
 HV0040  STATE/COUNTY-  MD/TALBOT
 HV0040  COUNTRY     -  US
 HV0040  USGS QUAD   -  EASTON (2016)
 HV0040
 HV0040                         *CURRENT SURVEY CONTROL
 HV0040  ______________________________________________________________________
 HV0040* NAD 83(1986) POSITION- 38 46 28.     (N) 076 01 20.     (W)   SCALED
 HV0040* NAVD 88 ORTHO HEIGHT -    17.510 (meters)       57.45  (feet) ADJUSTED
 HV0040  ______________________________________________________________________
 HV0040  GEOID HEIGHT    -        -34.756 (meters)                     GEOID18
 HV0040  DYNAMIC HEIGHT  -         17.499 (meters)       57.41  (feet) COMP
 HV0040  MODELED GRAVITY -    980,034.9   (mgal)                       NAVD 88
 HV0040
 HV0040  VERT ORDER      -  FIRST     CLASS I
 HV0040
 HV0040.The horizontal coordinates were scaled from a map and have
 HV0040.an estimated accuracy of +/- 6 seconds.
 HV0040
 HV0040.The orthometric height was determined by differential leveling and
 HV0040.adjusted by the NATIONAL GEODETIC SURVEY
 HV0040.in June 1991.
 HV0040
 HV0040.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0040.GEOID18 height accuracy estimate available here.
 HV0040
 HV0040.Click photographs - Photos may exist for this station.
 HV0040
 HV0040.The dynamic height is computed by dividing the NAVD 88
 HV0040.geopotential number by the normal gravity value computed on the
 HV0040.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0040.degrees latitude (g = 980.6199 gals.).
 HV0040
 HV0040.The modeled gravity was interpolated from observed gravity values.
 HV0040
 HV0040;                    North         East    Units  Estimated Accuracy
 HV0040;SPC MD       -   123,420.      484,960.      MT  (+/- 180 meters Scaled)
 HV0040
 HV0040_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH112922(NAD 83)
 HV0040
 HV0040                          SUPERSEDED SURVEY CONTROL
 HV0040
 HV0040  NGVD 29 (11/26/84)   17.745  (m)           58.22   (f) ADJUSTED    1 1
 HV0040
 HV0040.Superseded values are not recommended for survey control.
 HV0040
 HV0040.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0040.See file dsdata.pdf to determine how the superseded data were derived.
 HV0040
 HV0040_MARKER: DB = BENCH MARK DISK
 HV0040_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0040+WITH SETTING: INTO GROUND
 HV0040_STAMPING: F 130 1971
 HV0040_MARK LOGO: CGS
 HV0040_PROJECTION: PROJECTING 3 CENTIMETERS
 HV0040_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0040+STABILITY: SURFACE MOTION
 HV0040
 HV0040  HISTORY     - Date     Condition        Report By
 HV0040  HISTORY     - 1971     MONUMENTED       NGS
 HV0040  HISTORY     - 20000920 MARK NOT FOUND   MDSHA
 HV0040  HISTORY     - 20020312 MARK NOT FOUND   USPSQD
 HV0040
 HV0040                          STATION DESCRIPTION
 HV0040
 HV0040'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV0040'2 MI E FROM EASTON.
 HV0040'ABOUT 2.05 MILES EAST ALONG STATE HIGHWAY 331 FROM THE INTERSECTION
 HV0040'OF U.S. HIGHWAY 50 AT EASTON, NEAR THE JUNCTION OF A BLACK TOP
 HV0040'ROAD LEADING NORTHWEST, 239 1/2 FEET NORTHWEST OF THE APPROXIMATE
 HV0040'CENTER OF THE JUNCTION, 87 1/2 FEET NORTHEAST OF AND ACROSS
 HV0040'THE HIGHWAY FROM CABLE LINE POLE NO. 129, 38.7 FEET NORTH OF
 HV0040'THE CENTER LINE OF THE HIGHWAY, 2 1/2 FEET WEST OF A POWER
 HV0040'LINE POLE WITH A GUY WIRE, 1 FOOT EAST OF A METAL WITNESS POST,
 HV0040'2 FEET BELOW THE LEVEL OF THE HIGHWAY, A DISK ON THE TOP OF A
 HV0040'4 FOOT COPPER COATED STEEL ROD WITH METAL BASE PLATE ATTACHED.
 HV0040'THE DISK IS FLUSH WITH THE GROUND AND ENCASED IN A 4 INCH
 HV0040'STEEL PIPE THAT PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.
 HV0040'NOTE-- MARK IS ABOUT 1.75 MILES NORTHWEST OF THE NORTHWEST
 HV0040'END OF THE HIGHWAY BRIDGE OVER THE CHOPTANK RIVER.
 HV0040
 HV0040                          STATION RECOVERY (2000)
 HV0040
 HV0040'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV0040'THE MARK WAS SEARCHED FOR AND WHAT APPEARS TO BE THE ROD WAS FOUND AT
 HV0040'THE DESCRIBED LOCATION.  THE 4 INCH (10 CM) PIPE AND DISK WERE NOT
 HV0040'RECOVERED.
 HV0040
 HV0040                          STATION RECOVERY (2002)
 HV0040
 HV0040'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0040'REFERENCED POWER POLE WITH GUY WIRE HAS BEEN REPLACED AND MOVED 4 FEET
 HV0040'W.  METAL WITNESS POST DOES NOT EXIST.  REMAINS OF THE METAL BASE AND
 HV0040'STEEL ROD WERE FOUND 2 FEET E OF THE POLE, ABOUT 1 FOOT BELOW GROUND
 HV0040'LEVEL.  NEW DRAINAGE DITCH AND EXTENSIVE ROAD GRADING IN THE VICINITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0897 ***********************************************************************
 HV0897  DESIGNATION -  F 131
 HV0897  PID         -  HV0897
 HV0897  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0897  COUNTRY     -  US
 HV0897  USGS QUAD   -  BRISTOL (2016)
 HV0897
 HV0897                         *CURRENT SURVEY CONTROL
 HV0897  ______________________________________________________________________
 HV0897* NAD 83(1986) POSITION- 38 49 26.     (N) 076 44 06.     (W)   SCALED
 HV0897* NAVD 88 ORTHO HEIGHT -    28.297 (meters)       92.84  (feet) ADJUSTED
 HV0897  ______________________________________________________________________
 HV0897  GEOID HEIGHT    -        -32.954 (meters)                     GEOID18
 HV0897  DYNAMIC HEIGHT  -         28.281 (meters)       92.79  (feet) COMP
 HV0897  MODELED GRAVITY -    980,067.3   (mgal)                       NAVD 88
 HV0897
 HV0897  VERT ORDER      -  FIRST     CLASS I
 HV0897
 HV0897.The horizontal coordinates were scaled from a map and have
 HV0897.an estimated accuracy of +/- 6 seconds.
 HV0897
 HV0897.The orthometric height was determined by differential leveling and
 HV0897.adjusted by the NATIONAL GEODETIC SURVEY
 HV0897.in June 1991.
 HV0897
 HV0897.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0897.GEOID18 height accuracy estimate available here.
 HV0897
 HV0897.Click photographs - Photos may exist for this station.
 HV0897
 HV0897.The dynamic height is computed by dividing the NAVD 88
 HV0897.geopotential number by the normal gravity value computed on the
 HV0897.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0897.degrees latitude (g = 980.6199 gals.).
 HV0897
 HV0897.The modeled gravity was interpolated from observed gravity values.
 HV0897
 HV0897;                    North         East    Units  Estimated Accuracy
 HV0897;SPC MD       -   128,490.      423,010.      MT  (+/- 180 meters Scaled)
 HV0897
 HV0897_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH493986(NAD 83)
 HV0897
 HV0897                          SUPERSEDED SURVEY CONTROL
 HV0897
 HV0897  NGVD 29 (11/26/84)   28.532  (m)           93.61   (f) ADJUSTED    1 1
 HV0897
 HV0897.Superseded values are not recommended for survey control.
 HV0897
 HV0897.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0897.See file dsdata.pdf to determine how the superseded data were derived.
 HV0897
 HV0897_MARKER: DB = BENCH MARK DISK
 HV0897_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0897_STAMPING: F 131 1971
 HV0897_MARK LOGO: CGS
 HV0897_PROJECTION: FLUSH
 HV0897_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0897
 HV0897  HISTORY     - Date     Condition        Report By
 HV0897  HISTORY     - 1971     MONUMENTED       NGS
 HV0897  HISTORY     - 1975     GOOD             NGS
 HV0897
 HV0897                          STATION DESCRIPTION
 HV0897
 HV0897'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0897'1.1 MI NE FROM UPPER MARLBORO.
 HV0897'ABOUT 1.1 MILES NORTHEAST ALONG MAIN STREET FROM THE POST OFFICE
 HV0897'AT UPPER MARLBORO, IN THE EAST ANGLE OF THE INTERSECTION OF
 HV0897'STATE HIGHWAY 408 (MAIN STREET) AND U.S. HIGHWAY 301, 101 FEET
 HV0897'SOUTHEAST OF THE CENTER LINE OF THE SOUTHEAST LANES OF HIGHWAY
 HV0897'301, 104 FEET NORTH-NORTHEAST OF THE CENTER LINE OF HIGHWAY
 HV0897'408, 126.4 FEET SOUTHWEST OF THE SOUTH CORNER OF A SHELL SERVICE
 HV0897'STATION, 0.8 FOOT WEST OF THE WEST CORNER OF A 2 1/2- X 2 1/2-
 HV0897'X 1.7-FOOT CONCRETE FOUNDATION FOR A METAL LIGHT POST, 0.8
 HV0897'FOOT SOUTHEAST OF A METAL WITNESS POST, ABOUT LEVEL WITH THE
 HV0897'HIGHWAYS, AND ON THE TOP OF A COPPER COATED ROD WHICH IS LEVEL
 HV0897'WITH THE SURFACE OF THE GROUND AND IS PROTECTED BY A 4-INCH METAL
 HV0897'PIPE WHICH PROJECTS 1 INCH.  THE ROD WAS DRIVEN TO REFUSAL AT
 HV0897'A DEPTH OF 38 1/2 FEET.  NOTE-- THIS MARK IS ALSO 0.7 MILE
 HV0897'NORTH ALONG U.S. HIGHWAY 301 FROM THE HIGHWAY UNDERPASS FOR
 HV0897'STATE HIGHWAY 4.
 HV0897
 HV0897                          STATION RECOVERY (1975)
 HV0897
 HV0897'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0897'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1596 ***********************************************************************
 HV1596  DESIGNATION -  F 132
 HV1596  PID         -  HV1596
 HV1596  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1596  COUNTRY     -  US
 HV1596  USGS QUAD   -  DEALE (2016)
 HV1596
 HV1596                         *CURRENT SURVEY CONTROL
 HV1596  ______________________________________________________________________
 HV1596* NAD 83(1986) POSITION- 38 46 37.     (N) 076 35 43.     (W)   SCALED
 HV1596* NAVD 88 ORTHO HEIGHT -    36.736 (meters)      120.52  (feet) ADJUSTED
 HV1596  ______________________________________________________________________
 HV1596  GEOID HEIGHT    -        -33.424 (meters)                     GEOID18
 HV1596  DYNAMIC HEIGHT  -         36.715 (meters)      120.46  (feet) COMP
 HV1596  MODELED GRAVITY -    980,052.1   (mgal)                       NAVD 88
 HV1596
 HV1596  VERT ORDER      -  FIRST     CLASS II
 HV1596
 HV1596.The horizontal coordinates were scaled from a map and have
 HV1596.an estimated accuracy of +/- 6 seconds.
 HV1596
 HV1596.The orthometric height was determined by differential leveling and
 HV1596.adjusted by the NATIONAL GEODETIC SURVEY
 HV1596.in June 1991.
 HV1596
 HV1596.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1596.GEOID18 height accuracy estimate available here.
 HV1596
 HV1596.Click photographs - Photos may exist for this station.
 HV1596
 HV1596.The dynamic height is computed by dividing the NAVD 88
 HV1596.geopotential number by the normal gravity value computed on the
 HV1596.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1596.degrees latitude (g = 980.6199 gals.).
 HV1596
 HV1596.The modeled gravity was interpolated from observed gravity values.
 HV1596
 HV1596;                    North         East    Units  Estimated Accuracy
 HV1596;SPC MD       -   123,320.      435,170.      MT  (+/- 180 meters Scaled)
 HV1596
 HV1596_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH614932(NAD 83)
 HV1596
 HV1596                          SUPERSEDED SURVEY CONTROL
 HV1596
 HV1596  NGVD 29 (11/26/84)   36.976  (m)          121.31   (f) ADJUSTED    1 2
 HV1596
 HV1596.Superseded values are not recommended for survey control.
 HV1596
 HV1596.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1596.See file dsdata.pdf to determine how the superseded data were derived.
 HV1596
 HV1596_MARKER: DB = BENCH MARK DISK
 HV1596_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV1596_STAMPING: F 132 1971
 HV1596_MARK LOGO: CGS
 HV1596_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1596
 HV1596  HISTORY     - Date     Condition        Report By
 HV1596  HISTORY     - 1971     MONUMENTED       NGS
 HV1596  HISTORY     - 1972     GOOD             NGS
 HV1596
 HV1596                          STATION DESCRIPTION
 HV1596
 HV1596'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1596'3 MI N FROM FRIENDSHIP.
 HV1596'ABOUT 0.1 MILE WEST ALONG FRIENDSHIP ROAD FROM THE FRIENDSHIP
 HV1596'METHODIST CHURCH AT FRIENDSHIP, THENCE 2.9 MILES NORTH ALONG
 HV1596'STATE HIGHWAY 2, 0.2 MILE SOUTH OF THE JUNCTION OF STATE HIGHWAY
 HV1596'2, AT THE JUNCTION OF OLD STATE HIGHWAY 2, 69 FEET SOUTH OF AND
 HV1596'ACROSS THE OLD HIGHWAY FROM POWER LINE POLE 327960, 43 1/2 FEET
 HV1596'SOUTHWEST OF THE EXTENDED CENTER LINE OF A FARM ROAD LEADING
 HV1596'SOUTHEAST FROM THE HIGHWAY, 38.9 FEET NORTHWEST OF THE CENTER LINE
 HV1596'OF THE HIGHWAY, 25 FEET EAST OF THE CENTER LINE OF THE OLD HIGHWAY,
 HV1596'1 FOOT SOUTHWEST OF A METAL WITNESS POST, 1 FOOT ABOVE THE LEVEL
 HV1596'OF THE HIGHWAY, AND IS A DISK ON THE TOP OF A 4 FOOT COPPER COATED
 HV1596'STEEL ROD PROJECTING 1 INCH ABOVE THE LEVEL OF THE GROUND AND
 HV1596'ENCASED IN A 6 INCH STEEL PIPE THAT PROJECTS 2 INCHES ABOVE THE
 HV1596'LEVEL OF THE GROUND.  NOTE-- MARK MAY BE REACHED BY GOING 0.2
 HV1596'MILE SOUTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE POST OFFICE
 HV1596'AT LOTHIAN, THENCE 4.0 MILES SOUTHEAST ALONG STATE HIGHWAY 2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0954 ***********************************************************************
 HV0954  DESIGNATION -  F 133
 HV0954  PID         -  HV0954
 HV0954  STATE/COUNTY-  MD/CALVERT
 HV0954  COUNTRY     -  US
 HV0954  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0954
 HV0954                         *CURRENT SURVEY CONTROL
 HV0954  ______________________________________________________________________
 HV0954* NAD 83(1986) POSITION- 38 30 21.     (N) 076 33 26.     (W)   SCALED
 HV0954* NAVD 88 ORTHO HEIGHT -    46.134 (meters)      151.36  (feet) ADJUSTED
 HV0954  ______________________________________________________________________
 HV0954  GEOID HEIGHT    -        -33.978 (meters)                     GEOID18
 HV0954  DYNAMIC HEIGHT  -         46.106 (meters)      151.27  (feet) COMP
 HV0954  MODELED GRAVITY -    980,020.7   (mgal)                       NAVD 88
 HV0954
 HV0954  VERT ORDER      -  FIRST     CLASS II
 HV0954
 HV0954.The horizontal coordinates were scaled from a map and have
 HV0954.an estimated accuracy of +/- 6 seconds.
 HV0954
 HV0954.The orthometric height was determined by differential leveling and
 HV0954.adjusted by the NATIONAL GEODETIC SURVEY
 HV0954.in June 1991.
 HV0954
 HV0954.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0954.GEOID18 height accuracy estimate available here.
 HV0954
 HV0954.Click photographs - Photos may exist for this station.
 HV0954
 HV0954.The dynamic height is computed by dividing the NAVD 88
 HV0954.geopotential number by the normal gravity value computed on the
 HV0954.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0954.degrees latitude (g = 980.6199 gals.).
 HV0954
 HV0954.The modeled gravity was interpolated from observed gravity values.
 HV0954
 HV0954;                    North         East    Units  Estimated Accuracy
 HV0954;SPC MD       -    93,250.      438,620.      MT  (+/- 180 meters Scaled)
 HV0954
 HV0954_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH642630(NAD 83)
 HV0954
 HV0954                          SUPERSEDED SURVEY CONTROL
 HV0954
 HV0954  NGVD 29 (11/26/84)   46.378  (m)          152.16   (f) ADJUSTED    1 2
 HV0954
 HV0954.Superseded values are not recommended for survey control.
 HV0954
 HV0954.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0954.See file dsdata.pdf to determine how the superseded data were derived.
 HV0954
 HV0954_MARKER: DB = BENCH MARK DISK
 HV0954_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0954+WITH SETTING: INTO GROUND
 HV0954_STAMPING: F 133 1971
 HV0954_MARK LOGO: CGS
 HV0954_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0954+STABILITY: SURFACE MOTION
 HV0954
 HV0954  HISTORY     - Date     Condition        Report By
 HV0954  HISTORY     - 1971     MONUMENTED       NGS
 HV0954  HISTORY     - 1972     GOOD             NGS
 HV0954
 HV0954                          STATION DESCRIPTION
 HV0954
 HV0954'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV0954'2.8 MI SE FROM PRINCE FREDERICK.
 HV0954'ABOUT 2.8 MILES SOUTHEAST ALONG STATE HIGHWAY 4 AND 2 FROM THE
 HV0954'INTERSECTION OF STATE HIGHWAY 231 AT PRINCE FREDERICK, 1.2
 HV0954'MILES SOUTHEAST OF THE JUNCTION OF STATE HIGHWAY 765, 0.95 MILE
 HV0954'NORTHWEST OF THE JUNCTION OF STATE HIGHWAY 264 LEADING SOUTH
 HV0954'TO BROOMES ISLAND, 56.2 FEET SOUTHEAST OF THE SOUTHEAST GATE
 HV0954'POST FOR GATE AT ROAD, 49 FEET SOUTHWEST OF THE CENTER LINE OF
 HV0954'THE HIGHWAY, 35 FEET NORTHWEST OF POWER LINE POLE, 173.5 FEET
 HV0954'SOUTHEAST OF SMITH AZ MARK DESCRIBED, 0.9 FOOT NORTHEAST OF A
 HV0954'BOARD FENCE, 0.7 FOOT SOUTHEAST OF A METAL WITNESS POST, 1 FOOT
 HV0954'ABOVE THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4 FOOT
 HV0954'COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.
 HV0954'THE DISK IS FLUSH WITH THE GROUND AND ENCASED IN A  6 INCH IRON
 HV0954'PIPE THAT PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7954 ***********************************************************************
 HV7954  DESIGNATION -  F 133 RESET
 HV7954  PID         -  HV7954
 HV7954  STATE/COUNTY-  MD/CALVERT
 HV7954  COUNTRY     -  US
 HV7954  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV7954
 HV7954                         *CURRENT SURVEY CONTROL
 HV7954  ______________________________________________________________________
 HV7954* NAD 83(1986) POSITION- 38 30 21.     (N) 076 33 26.     (W)   SCALED
 HV7954* NAVD 88 ORTHO HEIGHT -    45.71  (+/-2cm)      150.0   (feet) VERTCON3
 HV7954  ______________________________________________________________________
 HV7954  GEOID HEIGHT    -        -33.978 (meters)                     GEOID18
 HV7954  VERT ORDER      -  THIRD (See Below)
 HV7954
 HV7954.The horizontal coordinates were scaled from a map and have
 HV7954.an estimated accuracy of +/- 6 seconds.
 HV7954
 HV7954.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7954.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7954
 HV7954.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7954.GEOID18 height accuracy estimate available here.
 HV7954
 HV7954.The vertical order pertains to the NGVD 29 superseded value.
 HV7954
 HV7954.Click photographs - Photos may exist for this station.
 HV7954
 HV7954;                    North         East    Units  Estimated Accuracy
 HV7954;SPC MD       -    93,250.      438,620.      MT  (+/- 180 meters Scaled)
 HV7954
 HV7954_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH642630(NAD 83)
 HV7954
 HV7954                          SUPERSEDED SURVEY CONTROL
 HV7954
 HV7954  NGVD 29 (??/??/??)   45.96   (m)          150.8    (f) RESET       3  
 HV7954
 HV7954.Superseded values are not recommended for survey control.
 HV7954
 HV7954.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7954.See file dsdata.pdf to determine how the superseded data were derived.
 HV7954
 HV7954_MARKER: DV = VERTICAL CONTROL DISK
 HV7954_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7954_STAMPING: F 133 RESET 1975
 HV7954_MARK LOGO: NGS
 HV7954_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV7954_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7954+STABILITY: SURFACE MOTION
 HV7954
 HV7954  HISTORY     - Date     Condition        Report By
 HV7954  HISTORY     - 1975     MONUMENTED       NGS
 HV7954
 HV7954                          STATION DESCRIPTION
 HV7954
 HV7954'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7954'2.65 MILES (4.26 KM) SOUTH ALONG ROUTE 224 FROM JUNCTION 4, 2 AND 231
 HV7954'IN PRINCE FREDRICK, SOUTHWEST OF RUSTIC FARM LOUNGE, A STANDARD DISK
 HV7954'STAMPED F 133 RESET 1975 SET IN A 10 - INCH ROUND POST FLUSH, 164 FEET
 HV7954'(50.0 M) SOUTHWEST OF SOUTHWEST CORNER FIRE CHIMNEY ON LOUNGE, 46 FEET
 HV7954'(14.0 M) NORTH CENTERLINE NORTH BOUND LANE 4 AND 2, 16.2 FEET (4.9 M)
 HV7954'WEST POWER POLE 83, 4.3 FEET (1.3 M) EAST LIGHT POLE, 1.4 FEET (0.4 M)
 HV7954'WEST WITNESS POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0331 ***********************************************************************
 HV0331  DESIGNATION -  F 134
 HV0331  PID         -  HV0331
 HV0331  STATE/COUNTY-  MD/ST MARYS
 HV0331  COUNTRY     -  US
 HV0331  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0331
 HV0331                         *CURRENT SURVEY CONTROL
 HV0331  ______________________________________________________________________
 HV0331* NAD 83(1986) POSITION- 38 19 19.5    (N) 076 29 07.2    (W)   HD_HELD2
 HV0331* NAVD 88 ORTHO HEIGHT -     4.683 (meters)       15.36  (feet) ADJUSTED
 HV0331  ______________________________________________________________________
 HV0331  GEOID HEIGHT    -        -34.313 (meters)                     GEOID18
 HV0331  DYNAMIC HEIGHT  -          4.680 (meters)       15.35  (feet) COMP
 HV0331  MODELED GRAVITY -    980,019.4   (mgal)                       NAVD 88
 HV0331
 HV0331  VERT ORDER      -  FIRST     CLASS II
 HV0331
 HV0331.The horizontal coordinates were established by autonomous hand held GPS
 HV0331.observations and have an estimated accuracy of +/- 10 meters.
 HV0331
 HV0331.The orthometric height was determined by differential leveling and
 HV0331.adjusted by the NATIONAL GEODETIC SURVEY
 HV0331.in June 1991.
 HV0331
 HV0331.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0331.GEOID18 height accuracy estimate available here.
 HV0331
 HV0331.Click photographs - Photos may exist for this station.
 HV0331
 HV0331.The dynamic height is computed by dividing the NAVD 88
 HV0331.geopotential number by the normal gravity value computed on the
 HV0331.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0331.degrees latitude (g = 980.6199 gals.).
 HV0331
 HV0331.The modeled gravity was interpolated from observed gravity values.
 HV0331
 HV0331;                    North         East    Units  Estimated Accuracy
 HV0331;SPC MD       -    72,881.      445,006.      MT  (+/- 10 meters HH2 GPS)
 HV0331
 HV0331_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7016042595(NAD 83)
 HV0331
 HV0331                          SUPERSEDED SURVEY CONTROL
 HV0331
 HV0331  NGVD 29 (11/26/84)    4.929  (m)           16.17   (f) ADJUSTED    1 2
 HV0331
 HV0331.Superseded values are not recommended for survey control.
 HV0331
 HV0331.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0331.See file dsdata.pdf to determine how the superseded data were derived.
 HV0331
 HV0331_MARKER: DB = BENCH MARK DISK
 HV0331_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0331_STAMPING: F 134 1971
 HV0331_MARK LOGO: CGS
 HV0331_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0331_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0331+SATELLITE: SATELLITE OBSERVATIONS - September 29, 2013
 HV0331
 HV0331  HISTORY     - Date     Condition        Report By
 HV0331  HISTORY     - 1971     MONUMENTED       NGS
 HV0331  HISTORY     - 20130929 GOOD             USPSQD
 HV0331
 HV0331                          STATION DESCRIPTION
 HV0331
 HV0331'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0331'3 MI NE FROM CALIFORNIA.
 HV0331'ABOUT 0.6 MILE NORTHWEST ALONG STATE HIGHWAY 235 FROM THE POST
 HV0331'OFFICE AT CALIFORNIA, THENCE 2.45 MILES NORTHEAST ALONG PATUXENT
 HV0331'BEACH ROAD, ABOUT 0.75 MILE SOUTHWEST OF AND ACROSS THE PATUXENT
 HV0331'RIVER FROM BENCH MARK WO 3 (USGS) DESCRIBED, ALONG THE SOUTH
 HV0331'BANK OF THE PATUXENT RIVER, AT A SHARP CURVE IN THE ROAD, NEAR
 HV0331'THE WEST END OF A CABLE GUARD RAIL, 29 FEET NORTHEAST OF POWER
 HV0331'LINE BRACE POLE NO. 40, 18 1/2 FEET NORTHWEST OF THE CENTER LINE
 HV0331'OF THE ROAD, 6 FEET WEST OF AN 8-INCH CEDAR TREE, 1.1 FEET
 HV0331'SOUTHEAST OF THE STEEL POST SUPPORTING THE CABLE GUARD RAIL
 HV0331'(THE WEST POST OF SEVERAL), 0.5 FOOT SOUTH OF A METAL WITNESS
 HV0331'POST, ABOUT LEVEL WITH THE ROAD AND IS A DISK ON THE TOP OF A
 HV0331'COPPER COATED STEEL ROD PROJECTING 1 INCH ABOVE THE LEVEL OF THE
 HV0331'GROUND AND ENCASED IN A 6 INCH STEEL PIPE THAT PROJECTS 2 INCHES
 HV0331'ABOVE THE LEVEL OF THE GROUND.  THE ROD WAS DRIVEN TO A DEPTH
 HV0331'OF 43 FEET TO REFUSAL.
 HV0331
 HV0331                          STATION RECOVERY (2013)
 HV0331
 HV0331'RECOVERY NOTE BY US POWER SQUADRON 2013
 HV0331'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0502 ***********************************************************************
 HU0502  DESIGNATION -  F 135
 HU0502  PID         -  HU0502
 HU0502  STATE/COUNTY-  MD/SOMERSET
 HU0502  COUNTRY     -  US
 HU0502  USGS QUAD   -  POCOMOKE CITY (2016)
 HU0502
 HU0502                         *CURRENT SURVEY CONTROL
 HU0502  ______________________________________________________________________
 HU0502* NAD 83(1986) POSITION- 38 06 19.9    (N) 075 37 04.3    (W)   HD_HELD2
 HU0502* NAVD 88 ORTHO HEIGHT -     5.865 (meters)       19.24  (feet) ADJUSTED
 HU0502  ______________________________________________________________________
 HU0502  GEOID HEIGHT    -        -36.196 (meters)                     GEOID18
 HU0502  DYNAMIC HEIGHT  -          5.862 (meters)       19.23  (feet) COMP
 HU0502  MODELED GRAVITY -    979,977.0   (mgal)                       NAVD 88
 HU0502
 HU0502  VERT ORDER      -  FIRST     CLASS II
 HU0502
 HU0502.The horizontal coordinates were established by autonomous hand held GPS
 HU0502.observations and have an estimated accuracy of +/- 10 meters.
 HU0502
 HU0502.The orthometric height was determined by differential leveling and
 HU0502.adjusted by the NATIONAL GEODETIC SURVEY
 HU0502.in June 1991.
 HU0502
 HU0502.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0502.GEOID18 height accuracy estimate available here.
 HU0502
 HU0502.Click photographs - Photos may exist for this station.
 HU0502
 HU0502.The dynamic height is computed by dividing the NAVD 88
 HU0502.geopotential number by the normal gravity value computed on the
 HU0502.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0502.degrees latitude (g = 980.6199 gals.).
 HU0502
 HU0502.The modeled gravity was interpolated from observed gravity values.
 HU0502
 HU0502;                    North         East    Units  Estimated Accuracy
 HU0502;SPC MD       -    49,634.      521,223.      MT  (+/- 10 meters HH2 GPS)
 HU0502
 HU0502_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4583117703(NAD 83)
 HU0502
 HU0502                          SUPERSEDED SURVEY CONTROL
 HU0502
 HU0502  NGVD 29 (11/26/84)    6.117  (m)           20.07   (f) ADJUSTED    1 2
 HU0502
 HU0502.Superseded values are not recommended for survey control.
 HU0502
 HU0502.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0502.See file dsdata.pdf to determine how the superseded data were derived.
 HU0502
 HU0502_MARKER: DB = BENCH MARK DISK
 HU0502_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU0502+WITH SETTING: INTO GROUND
 HU0502_STAMPING: F 135 1972
 HU0502_MARK LOGO: CGS
 HU0502_PROJECTION: PROJECTING 3 CENTIMETERS
 HU0502_MAGNETIC: I = MARKER IS A STEEL ROD
 HU0502_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0502+STABILITY: SURFACE MOTION
 HU0502_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0502+SATELLITE: SATELLITE OBSERVATIONS - November 06, 2019
 HU0502
 HU0502  HISTORY     - Date     Condition        Report By
 HU0502  HISTORY     - 1972     MONUMENTED       NGS
 HU0502  HISTORY     - 20191106 GOOD             ARCSHE
 HU0502
 HU0502                          STATION DESCRIPTION
 HU0502
 HU0502'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0502'3.4 MI NW FROM POCOMOKE CITY.
 HU0502'ABOUT 3.45 MILES NORTHWEST ALONG THE PENN CENTRAL RAILROAD FROM
 HU0502'THE CROSSING OF CLARKE AVENUE AT POCOMOKE CITY, 0.15 MILE
 HU0502'NORTHWEST OF A BLACK TOP ROAD CROSSING, 0.2 MILE SOUTHEAST OF
 HU0502'MILEPOST 27, BETWEEN THE TRACK AND A BLACK TOP ROAD (OLD U.S.
 HU0502'HIGHWAY 13), 71 FEET SOUTHWEST OF AND ACROSS THE TRACK FROM A
 HU0502'LONE 12 INCH CEDAR TREE, 35 1/2 FEET SOUTHEAST OF POWER LINE POLE
 HU0502'NO. 184, 47 1/2 FEET NORTHWEST OF A POWER LINE BRACE POLE, 41 1/2
 HU0502'FEET NORTHEAST OF THE CENTER LINE OF THE BLACK TOP ROAD, 20.3
 HU0502'FEET SOUTHWEST OF THE SOUTHWEST RAIL, 1.7 FEET NORTHWEST OF A
 HU0502'METAL WITNESS POST, ABOUT LEVEL WITH THE TRACK AND ON THE TOP OF
 HU0502'A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE
 HU0502'PLATE.  THE DISK IS FLUSH WITH THE LEVEL OF THE GROUND AND
 HU0502'ENCASED IN A 4 INCH IRON PIPE THAT PROJECTS 1 INCH ABOVE THE
 HU0502'LEVEL OF THE GROUND.
 HU0502
 HU0502                          STATION RECOVERY (2019)
 HU0502
 HU0502'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HU0502'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8876 ***********************************************************************
 HV8876  DESIGNATION -  F 136 RESET
 HV8876  PID         -  HV8876
 HV8876  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8876  COUNTRY     -  US
 HV8876  USGS QUAD   -  BOWIE (2016)
 HV8876
 HV8876                         *CURRENT SURVEY CONTROL
 HV8876  ______________________________________________________________________
 HV8876* NAD 83(2011) POSITION- 38 57 12.25352(N) 076 43 02.21578(W)   ADJUSTED
 HV8876* NAD 83(2011) ELLIP HT-     7.011 (meters)        (06/27/12)   ADJUSTED
 HV8876* NAD 83(2011) EPOCH   -  2010.00
 HV8876* NAVD 88 ORTHO HEIGHT -    39.81  (meters)      130.6   (feet) RESET
 HV8876  ______________________________________________________________________
 HV8876  GEOID HEIGHT    -        -32.779 (meters)                     GEOID18
 HV8876  NAD 83(2011) X  -  1,141,103.986 (meters)                     COMP
 HV8876  NAD 83(2011) Y  - -4,833,721.519 (meters)                     COMP
 HV8876  NAD 83(2011) Z  -  3,988,300.021 (meters)                     COMP
 HV8876  LAPLACE CORR    -         -6.06  (seconds)                    DEFLEC18
 HV8876  VERT ORDER      -  THIRD
 HV8876
 HV8876  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8876  Standards:
 HV8876         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8876            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8876  -------------------------------------------------------------------
 HV8876  NETWORK    1.18   2.43           0.36   0.56   1.24     -0.04287595
 HV8876  -------------------------------------------------------------------
 HV8876  Click here for local accuracies and other accuracy information.
 HV8876
 HV8876.The horizontal coordinates were established by GPS observations
 HV8876.and adjusted by the National Geodetic Survey in June 2012.
 HV8876
 HV8876.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8876.been affixed to the stable North American tectonic plate. See 
 HV8876.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8876
 HV8876.The horizontal coordinates are valid at the epoch date displayed above
 HV8876.which is a decimal equivalence of Year/Month/Day.
 HV8876
 HV8876.The orthometric height was computed from unverified reset data.
 HV8876
 HV8876.No vertical observational check was made to the station.
 HV8876
 HV8876.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8876.GEOID18 height accuracy estimate available here.
 HV8876
 HV8876.Click photographs - Photos may exist for this station.
 HV8876
 HV8876.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8876
 HV8876.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8876
 HV8876.The ellipsoidal height was determined by GPS observations
 HV8876.and is referenced to NAD 83.
 HV8876
 HV8876. The following values were computed from the NAD 83(2011) position.
 HV8876
 HV8876;                    North         East     Units Scale Factor Converg.
 HV8876;SPC MD       -   142,871.522   424,505.639   MT  0.99995076   +0 10 38.8
 HV8876;SPC MD       -   468,737.65  1,392,732.25   sFT  0.99995076   +0 10 38.8
 HV8876;UTM  18      - 4,313,007.979   351,195.323   MT  0.99987266   -1 04 47.4
 HV8876
 HV8876!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8876!SPC MD       -   0.99999890  x   0.99995076  =   0.99994966
 HV8876!UTM  18      -   0.99999890  x   0.99987266  =   0.99987156
 HV8876
 HV8876_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5119513007(NAD 83)
 HV8876
 HV8876                          SUPERSEDED SURVEY CONTROL
 HV8876
 HV8876  NAD 83(2007)-  38 57 12.25384(N)    076 43 02.21651(W) AD(2002.00) 0
 HV8876  ELLIP H (02/10/07)    7.047  (m)                       GP(2002.00)    
 HV8876  ELLIP H (08/30/02)    7.041  (m)                       GP(       ) 4 2
 HV8876  NAD 83(1991)-  38 57 12.25363(N)    076 43 02.21625(W) AD(       ) 1
 HV8876  ELLIP H (01/27/92)    6.995  (m)                       GP(       ) 4 1
 HV8876  NAD 83(1986)-  38 57 12.25195(N)    076 43 02.22700(W) AD(       ) 1
 HV8876  NGVD 29 (11/18/05)   40.05   (m)          131.4    (f) RESET       3  
 HV8876  NGVD 29              40.04   (m)          131.4    (f) LEVELING    3  
 HV8876
 HV8876.Superseded values are not recommended for survey control.
 HV8876
 HV8876.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8876.See file dsdata.pdf to determine how the superseded data were derived.
 HV8876
 HV8876_MARKER: DV = VERTICAL CONTROL DISK
 HV8876_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8876_STAMPING: F 136 RESET 1989
 HV8876_MARK LOGO: NGS
 HV8876_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8876_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8876+STABILITY: SURFACE MOTION
 HV8876_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8876+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HV8876
 HV8876  HISTORY     - Date     Condition        Report By
 HV8876  HISTORY     - 1989     MONUMENTED       NGS
 HV8876  HISTORY     - 20030604 MARK NOT FOUND   URS
 HV8876
 HV8876                          STATION DESCRIPTION
 HV8876
 HV8876'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HV8876'2.5 KM (1.55 MI) SOUTHEAST OF THE APPROXIMATE CENTER OF BOWIE, 0.061
 HV8876'KM (0.05 MI) SOUTH OF THE INTERSECTION OF U.S. HIGHWAYS 3, 50 AND 301
 HV8876'IN THE MEDIAN STRIP OF U.S. HIGHWAYS 3 AND 301.  OWNERSHIP--ROAD
 HV8876'RIGHT-OF-WAY, IN TOP OF A ROUND CONCRETE MONUMENT, FLUSH WITH GROUND,
 HV8876'28.95 M (95.0 FT) SOUTH OF THE SOUTH EDGE OF A CONCRETE BULL NOSE OF
 HV8876'A STEEL GUARD RAIL AT THE SOUTH EDGE AND UNDER U.S. HIGHWAY 50, 12.8 M
 HV8876'12.8 M (42.0 FT) EAST OF THE CENTER OF THE SOUTH BOUND LANE OF
 HV8876'U.S. HIGHWAY 301, 10.05 M (33.0 FT) WEST OF THE CENTER OF NORTHBOUND
 HV8876'LANE OF U.S. HIGHWAY 3, 5.5 M (18.0 FT) NORTH OF THE NORTH EDGE
 HV8876'OF A DROP INLET AND 0.6 M (2.0 FT) EAST OF A CARSONITE WITNESS POST.
 HV8876
 HV8876                          STATION RECOVERY (2003)
 HV8876
 HV8876'RECOVERY NOTE BY URS COMPANY 2003 (JP)
 HV8876'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3823 ***********************************************************************
 JV3823  DESIGNATION -  F 137
 JV3823  PID         -  JV3823
 JV3823  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV3823  COUNTRY     -  US
 JV3823  USGS QUAD   -  ROUND BAY (2016)
 JV3823
 JV3823                         *CURRENT SURVEY CONTROL
 JV3823  ______________________________________________________________________
 JV3823* NAD 83(1986) POSITION- 39 05 11.2    (N) 076 37 24.2    (W)   HD_HELD2
 JV3823* NAVD 88 ORTHO HEIGHT -    32.134 (meters)      105.43  (feet) ADJUSTED
 JV3823  ______________________________________________________________________
 JV3823  GEOID HEIGHT    -        -32.886 (meters)                     GEOID18
 JV3823  DYNAMIC HEIGHT  -         32.116 (meters)      105.37  (feet) COMP
 JV3823  MODELED GRAVITY -    980,081.2   (mgal)                       NAVD 88
 JV3823
 JV3823  VERT ORDER      -  FIRST     CLASS II
 JV3823
 JV3823.The horizontal coordinates were established by autonomous hand held GPS
 JV3823.observations and have an estimated accuracy of +/- 10 meters.
 JV3823
 JV3823.The orthometric height was determined by differential leveling and
 JV3823.adjusted by the NATIONAL GEODETIC SURVEY
 JV3823.in June 1991.
 JV3823
 JV3823.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3823.GEOID18 height accuracy estimate available here.
 JV3823
 JV3823.Click photographs - Photos may exist for this station.
 JV3823
 JV3823.The dynamic height is computed by dividing the NAVD 88
 JV3823.geopotential number by the normal gravity value computed on the
 JV3823.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3823.degrees latitude (g = 980.6199 gals.).
 JV3823
 JV3823.The modeled gravity was interpolated from observed gravity values.
 JV3823
 JV3823;                    North         East    Units  Estimated Accuracy
 JV3823;SPC MD       -   157,670.      432,583.      MT  (+/- 10 meters HH2 GPS)
 JV3823
 JV3823_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5959527623(NAD 83)
 JV3823
 JV3823                          SUPERSEDED SURVEY CONTROL
 JV3823
 JV3823  NGVD 29 (11/26/84)   32.371  (m)          106.20   (f) ADJUSTED    1 2
 JV3823
 JV3823.Superseded values are not recommended for survey control.
 JV3823
 JV3823.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3823.See file dsdata.pdf to determine how the superseded data were derived.
 JV3823
 JV3823_MARKER: DV = VERTICAL CONTROL DISK
 JV3823_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV3823+WITH SETTING: INTO GROUND
 JV3823_STAMPING: F 137 1975
 JV3823_MARK LOGO: NGS
 JV3823_PROJECTION: PROJECTING 2 CENTIMETERS
 JV3823_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3823_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3823+STABILITY: SURFACE MOTION
 JV3823_ROD/PIPE-DEPTH: 1.2 meters
 JV3823
 JV3823  HISTORY     - Date     Condition        Report By
 JV3823  HISTORY     - 1975     MONUMENTED       NGS
 JV3823  HISTORY     - 19920309 GOOD             MDSHA
 JV3823
 JV3823                          STATION DESCRIPTION
 JV3823
 JV3823'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 JV3823'0.85 MI SOUTH FROM BENFIELD.
 JV3823'.85 MI SOUTH ALONG STATE HIGHWAY 3 FROM THE ANNE ARUNDEL POLICE AND
 JV3823'FIRE DEPARTMENT HEADQUARTERS. AT THE INTERSECTION OF BENFIELD ROAD AND
 JV3823'STATE HIGHWAY 3. 55.2 FEET EAST OF THE CENTERLINE OF THE NORTHBOUND
 JV3823'LANE OF STATE HIGHWAY 3. 38.7 FEET NORTH OF THE CENTERLINE OF BENFIELD
 JV3823'ROAD. 74.8 FEET NORTH OF BENFIELD ROAD SIGN. 10.4 FEET NORTHEAST OF A
 JV3823'LARGE METAL TRAFFIC LIGHT POLE. 9.7 FEET SOUTH OF POWER POLE NO 292830
 JV3823'.15 MILE SOUTH OF MILEPOST NO 11.
 JV3823
 JV3823                          STATION RECOVERY (1992)
 JV3823
 JV3823'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JV3823'THE MARKER IS LOCATED ABOUT 10 MI (16.1 KM) NORTHWEST OF ANNAPOLIS,
 JV3823'4.5 MI (7.2 KM) WEST OF SEVERNA PARK AND NEAR THE SMALL VILLAGE OF
 JV3823'DORRS CORNER.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH FROM THE
 JV3823'SOUTHWEST END OF THE U.S. HIGHWAYS 50 AND 301 BRIDGE OVER THE SEVERN
 JV3823'RIVER, GO SOUTHWEST ON U.S. HIGHWAYS 50 AND 301 FOR 2.8 MI (4.5 KM)
 JV3823'TO AN EXIT RAMP ON THE RIGHT LEADING TO INTERSTATE HIGHWAY 97.  BEAR
 JV3823'RIGHT LEAVING U.S. HIGHWAYS 50 AND 301 AND GO NORTHWEST ON
 JV3823'INTERSTATE HIGHWAY 97 FOR 8.2 MI (13.2 KM) TO A POINT WHERE THE
 JV3823'NORTHBOUND LANE OF INTERSTATE HIGHWAY 97 PASSES OVER AN EXIT RAMP
 JV3823'LEADING TO THE WESTBOUND LANE OF STATE HIGHWAY 32.  BEAR RIGHT AND
 JV3823'CONTINUE NORTH ON INTERSTATE HIGHWAY 97 FOR 2.15 MI (3.46 KM) TO AN
 JV3823'EXIT RAMP ON THE RIGHT AT EXIT 10.  BEAR RIGHT LEAVING INTERSTATE
 JV3823'HIGHWAY 97 AND GO NORTHEAST AND EAST ON A PAVED EXIT ROAD FOR 0.3 MI
 JV3823'(0.5 KM) TO A T-INTERSECTION.  TURN RIGHT AND GO SOUTH ON OLD STATE
 JV3823'HIGHWAY 3 FOR 0.5 MI (0.8 KM) TO A CROSSROADS AND THE MARKER ON THE
 JV3823'LEFT.  THIS MARKER IS ALSO LOCATED 8.25 MI (13.28 KM) SOUTH ALONG
 JV3823'INTERSTATE HIGHWAY 97 FROM A POINT WHERE THE SOUTHBOUND LANE OF
 JV3823'INTERSTATE HIGHWAY 97 PASSES UNDER INTERSTATE HIGHWAY 695.  THE
 JV3823'MARKER IS 55 FT (16.8 M) EAST OF THE CENTER OF OLD STATE HIGHWAY 3,
 JV3823'74.8 FT (22.8 M) NORTH OF THE CENTER OF WEST BENFIELD ROAD, 9.0 FT
 JV3823'(2.7 M) EAST OF A RED METAL SIGNAL LIGHT SUPPORT POLE, 8.9 FT (2.7 M)
 JV3823'SOUTH OF A POWERLINE POLE NUMBERED 502842 219, 0.6 FT (0.2 M)
 JV3823'SOUTHWEST OF A CARSONITE WITNESS POST AND ABOUT 2 FT (0.6 M) LOWER
 JV3823'THAN THE ROAD INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1179 ***********************************************************************
 JV1179  DESIGNATION -  F 14
 JV1179  PID         -  JV1179
 JV1179  STATE/COUNTY-  MD/BALTIMORE
 JV1179  COUNTRY     -  US
 JV1179  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1179
 JV1179                         *CURRENT SURVEY CONTROL
 JV1179  ______________________________________________________________________
 JV1179* NAD 83(1986) POSITION- 39 27 26.     (N) 076 38 25.     (W)   SCALED
 JV1179* NAVD 88 ORTHO HEIGHT -   104.819 (meters)      343.89  (feet) ADJUSTED
 JV1179  ______________________________________________________________________
 JV1179  GEOID HEIGHT    -        -32.418 (meters)                     GEOID18
 JV1179  DYNAMIC HEIGHT  -        104.764 (meters)      343.71  (feet) COMP
 JV1179  MODELED GRAVITY -    980,099.7   (mgal)                       NAVD 88
 JV1179
 JV1179  VERT ORDER      -  SECOND    CLASS 0
 JV1179
 JV1179.The horizontal coordinates were scaled from a map and have
 JV1179.an estimated accuracy of +/- 6 seconds.
 JV1179
 JV1179.The orthometric height was determined by differential leveling and
 JV1179.adjusted by the NATIONAL GEODETIC SURVEY
 JV1179.in June 1991.
 JV1179
 JV1179.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1179.GEOID18 height accuracy estimate available here.
 JV1179
 JV1179.Click photographs - Photos may exist for this station.
 JV1179
 JV1179.The dynamic height is computed by dividing the NAVD 88
 JV1179.geopotential number by the normal gravity value computed on the
 JV1179.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1179.degrees latitude (g = 980.6199 gals.).
 JV1179
 JV1179.The modeled gravity was interpolated from observed gravity values.
 JV1179
 JV1179;                    North         East    Units  Estimated Accuracy
 JV1179;SPC MD       -   198,830.      430,960.      MT  (+/- 180 meters Scaled)
 JV1179
 JV1179_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ588688(NAD 83)
 JV1179
 JV1179                          SUPERSEDED SURVEY CONTROL
 JV1179
 JV1179  NGVD 29 (11/26/84)  105.040  (m)          344.62   (f) ADJUSTED    2 0
 JV1179
 JV1179.Superseded values are not recommended for survey control.
 JV1179
 JV1179.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1179.See file dsdata.pdf to determine how the superseded data were derived.
 JV1179
 JV1179_MARKER: DB = BENCH MARK DISK
 JV1179_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1179_STAMPING: F 14 1935
 JV1179_MARK LOGO: CGS
 JV1179_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1179+STABILITY: SURFACE MOTION
 JV1179
 JV1179  HISTORY     - Date     Condition        Report By
 JV1179  HISTORY     - 1935     MONUMENTED       CGS
 JV1179  HISTORY     - 1959     GOOD             CGS
 JV1179  HISTORY     - 19950819 MARK NOT FOUND   USPSQD
 JV1179  HISTORY     - 19951018 MARK NOT FOUND   USPSQD
 JV1179
 JV1179                          STATION DESCRIPTION
 JV1179
 JV1179'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1179'AT PADONIA.
 JV1179'AT PADONIA, BALTIMORE COUNTY, 48 FEET SOUTH OF THE PENNSYLVANIA
 JV1179'RAILROAD STATION, 291 FEET SOUTH OF MILEPOST 13, 33 FEET EAST
 JV1179'OF THE CENTERLINE OF PADONIA ROAD, AND 30 FEET WEST OF THE
 JV1179'CENTERLINE OF THE WEST TRACK.  A STANDARD DISK, STAMPED F 14 1935
 JV1179'AND SET IN THE TOP OF A CONCRETE POST.
 JV1179
 JV1179                          STATION RECOVERY (1995)
 JV1179
 JV1179'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1179'MARK NOT FOUND.
 JV1179
 JV1179                          STATION RECOVERY (1995)
 JV1179
 JV1179'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1179'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1029 ***********************************************************************
 HU1029  HT_MOD      -  This is a Height Modernization Survey Station.
 HU1029  DESIGNATION -  F 141
 HU1029  PID         -  HU1029
 HU1029  STATE/COUNTY-  MD/WORCESTER
 HU1029  COUNTRY     -  US
 HU1029  USGS QUAD   -  WHITTINGTON POINT (2016)
 HU1029
 HU1029                         *CURRENT SURVEY CONTROL
 HU1029  ______________________________________________________________________
 HU1029* NAD 83(2011) POSITION- 38 06 49.56085(N) 075 11 15.75394(W)   ADJUSTED
 HU1029* NAD 83(2011) ELLIP HT-   -34.963 (meters)        (06/05/19)   ADJUSTED
 HU1029* NAD 83(2011) EPOCH   -  2010.00
 HU1029* NAVD 88 ORTHO HEIGHT -     1.40  (meters)        4.6   (feet) GPS OBS
 HU1029  ______________________________________________________________________
 HU1029  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 HU1029  GEOID HEIGHT    -        -36.312 (meters)                     GEOID12B
 HU1029  GEOID HEIGHT    -        -36.317 (meters)                     GEOID18
 HU1029  NAD 83(2011) X  -  1,284,559.262 (meters)                     COMP
 HU1029  NAD 83(2011) Y  - -4,857,642.238 (meters)                     COMP
 HU1029  NAD 83(2011) Z  -  3,915,365.543 (meters)                     COMP
 HU1029  LAPLACE CORR    -          0.71  (seconds)                    DEFLEC18
 HU1029
 HU1029  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1029  Standards:
 HU1029         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1029            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1029  -------------------------------------------------------------------
 HU1029  NETWORK    1.01   0.84           0.49   0.28   0.43     -0.00987114
 HU1029  -------------------------------------------------------------------
 HU1029  Click here for local accuracies and other accuracy information.
 HU1029
 HU1029.The horizontal coordinates were established by GPS observations
 HU1029.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 HU1029
 HU1029.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1029.been affixed to the stable North American tectonic plate. See 
 HU1029.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1029
 HU1029.The horizontal coordinates are valid at the epoch date displayed above
 HU1029.which is a decimal equivalence of Year/Month/Day.
 HU1029
 HU1029.The orthometric height was determined by GPS observations and a
 HU1029.high-resolution geoid model using precise GPS observation and
 HU1029.processing techniques.
 HU1029
 HU1029.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1029.GEOID18 height accuracy estimate available here.
 HU1029
 HU1029.Click photographs - Photos may exist for this station.
 HU1029
 HU1029.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1029
 HU1029.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1029
 HU1029.The ellipsoidal height was determined by GPS observations
 HU1029.and is referenced to NAD 83.
 HU1029
 HU1029. The following values were computed from the NAD 83(2011) position.
 HU1029
 HU1029;                    North         East     Units Scale Factor Converg.
 HU1029;SPC MD       -    51,208.128   558,927.257   MT  1.00003761   +1 08 14.8
 HU1029;SPC MD       -   168,005.33  1,833,747.18   sFT  1.00003761   +1 08 14.8
 HU1029;UTM  18      - 4,218,454.454   483,545.099   MT  0.99960333   -0 06 57.1
 HU1029
 HU1029!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1029!SPC MD       -   1.00000549  x   1.00003761  =   1.00004310
 HU1029!UTM  18      -   1.00000549  x   0.99960333  =   0.99960881
 HU1029
 HU1029_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8354518454(NAD 83)
 HU1029
 HU1029                          SUPERSEDED SURVEY CONTROL
 HU1029
 HU1029  NAVD 88 (06/15/91)    1.471  (m)            4.83   (f) ADJUSTED    2 1
 HU1029  NGVD 29 (11/26/84)    1.712  (m)            5.62   (f) ADJUSTED    2 1
 HU1029
 HU1029.Superseded values are not recommended for survey control.
 HU1029
 HU1029.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1029.See file dsdata.pdf to determine how the superseded data were derived.
 HU1029
 HU1029_MARKER: DV = VERTICAL CONTROL DISK
 HU1029_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1029+WITH SETTING: INTO GROUND
 HU1029_STAMPING: F 141 1977
 HU1029_MARK LOGO: NGS
 HU1029_PROJECTION: PROJECTING 46 CENTIMETERS
 HU1029_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1029+STABILITY: SURFACE MOTION
 HU1029_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1029+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 HU1029
 HU1029  HISTORY     - Date     Condition        Report By
 HU1029  HISTORY     - 1977     MONUMENTED       NGS
 HU1029  HISTORY     - 1989     GOOD             USPSQD
 HU1029  HISTORY     - 20140409 GOOD             NPS
 HU1029  HISTORY     - 20150316 GOOD             NGS
 HU1029
 HU1029                          STATION DESCRIPTION
 HU1029
 HU1029'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1029'IN ASSATEAGUE ISLAND.
 HU1029'6.3 MILES NORTHEAST ALONG THE SERVICE ROAD FROM THE STATE LINE ON
 HU1029'ASSATEAGUE ISLAND, 119 FEET NORTHWEST OF THE CENTERLINE OF THE
 HU1029'ROAD, 8 FEET SOUTHWEST OF POWERLINE POLE 314.
 HU1029
 HU1029                          STATION RECOVERY (1989)
 HU1029
 HU1029'RECOVERY NOTE BY US POWER SQUADRON 1989 (RBD)
 HU1029'RECOVERED IN GOOD CONDITION.
 HU1029
 HU1029                          STATION RECOVERY (2014)
 HU1029
 HU1029'RECOVERY NOTE BY NATIONAL PARK SERVICE 2014 (NTW)
 HU1029'RECOVERED IN GOOD CONDITION.
 HU1029
 HU1029                          STATION RECOVERY (2015)
 HU1029
 HU1029'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2015 (NTW)
 HU1029'THE STATION IS LOCATED AT KM 24.8 IN THE OSV ZONE. FROM BAYBERRY
 HU1029'DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE
 HU1029'REQUIRED). DRIVE SOUTH ON THE BEACH 8.8 KM (5.5 MI), PARK VEHICLE, AND
 HU1029'WALK NORTHWEST FOR 235.5 M (772.6 FT). THE STATION IS 68 CM (26.8 IN)
 HU1029'EAST OF A ORANGE CARSONITE WITNESS POST AND PROJECTS 30 CM (11.8 IN)
 HU1029'FROM THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3873 ***********************************************************************
 JV3873  DESIGNATION -  F 143
 JV3873  PID         -  JV3873
 JV3873  STATE/COUNTY-  MD/FREDERICK
 JV3873  COUNTRY     -  US
 JV3873  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3873
 JV3873                         *CURRENT SURVEY CONTROL
 JV3873  ______________________________________________________________________
 JV3873* NAD 83(1986) POSITION- 39 18 32.     (N) 077 32 38.     (W)   SCALED
 JV3873* NAVD 88 ORTHO HEIGHT -   143.862 (meters)      471.99  (feet) ADJUSTED
 JV3873  ______________________________________________________________________
 JV3873  GEOID HEIGHT    -        -32.789 (meters)                     GEOID18
 JV3873  DYNAMIC HEIGHT  -        143.784 (meters)      471.73  (feet) COMP
 JV3873  MODELED GRAVITY -    980,082.8   (mgal)                       NAVD 88
 JV3873
 JV3873  VERT ORDER      -  FIRST     CLASS II
 JV3873
 JV3873.The horizontal coordinates were scaled from a map and have
 JV3873.an estimated accuracy of +/- 6 seconds.
 JV3873
 JV3873.The orthometric height was determined by differential leveling and
 JV3873.adjusted by the NATIONAL GEODETIC SURVEY
 JV3873.in June 1991.
 JV3873
 JV3873.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3873.GEOID18 height accuracy estimate available here.
 JV3873
 JV3873.Click photographs - Photos may exist for this station.
 JV3873
 JV3873.The dynamic height is computed by dividing the NAVD 88
 JV3873.geopotential number by the normal gravity value computed on the
 JV3873.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3873.degrees latitude (g = 980.6199 gals.).
 JV3873
 JV3873.The modeled gravity was interpolated from observed gravity values.
 JV3873
 JV3873;                    North         East    Units  Estimated Accuracy
 JV3873;SPC MD       -   182,440.      353,090.      MT  (+/- 180 meters Scaled)
 JV3873
 JV3873_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ806541(NAD 83)
 JV3873
 JV3873                          SUPERSEDED SURVEY CONTROL
 JV3873
 JV3873.No superseded survey control is available for this station.
 JV3873
 JV3873_MARKER: DV = VERTICAL CONTROL DISK
 JV3873_SETTING: 66 = SET IN ROCK OUTCROP
 JV3873_STAMPING: F 143 1979
 JV3873_MARK LOGO: NGS
 JV3873_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3873_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3873+STABILITY: POSITION/ELEVATION WELL
 JV3873_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3873+SATELLITE: SATELLITE OBSERVATIONS - March 23, 1995
 JV3873
 JV3873  HISTORY     - Date     Condition        Report By
 JV3873  HISTORY     - 1979     MONUMENTED       NGS
 JV3873  HISTORY     - 19950323 GOOD             NGS
 JV3873
 JV3873                          STATION DESCRIPTION
 JV3873
 JV3873'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3873'2.85 MI NORTH FROM POINT OF ROCKS.
 JV3873'1.0 MILE NORTHEAST ALONG STATE ROUTE 15 FROM THE JUNCTION OF STATE
 JV3873'ROUTE 28 IN POINT OF ROCKS TO THE INTERSECTION OF STATE ROUTE 464,
 JV3873'THENCE 1.85 MILES NORTHWEST ALONG ROUTE 464 TO THE MARK ON THE RIGHT,
 JV3873'SET IN MASSIVE BEDROCK ON TOP OF A HILL DIRECTLY ACROSS THE HIGHWAY
 JV3873'FROM A WHITE SINGLE STORY HOUSE WITH A CONCRETE BLOCK 2 CAR GARAGE
 JV3873'OWNED BY MR J.C. WHITNEY ROUTE 1, BOX 118, ABOUT 200 FEET EAST OF THE
 JV3873'CENTERLLNE OF THE HIGHWAY, 179 FEET SOUTHEAST AND UP HILL FROM
 JV3873'POWER POLE 144, 136 FEET EAST OF A WIRE FENCE.
 JV3873'THE MARK IS 1 FT  S FROM A WITNESS POST.
 JV3873'THE MARK IS 40 FT ABOVE HIGHWAY.
 JV3873
 JV3873                          STATION RECOVERY (1995)
 JV3873
 JV3873'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (GAS)
 JV3873'1.6 KM (1.00 MI) NORTHERLY ALONG U.S.  HIGHWAY 15 FROM THE JUNCTION OF
 JV3873'STATE HIGHWAY 28 IN POINT OF ROCKS, THENCE 2.9 KM (1.80 MI)
 JV3873'NORTHWESTERLY ALONG STATE HIGHWAY 464, NEAR THE CENTER OF A 2 BY
 JV3873'5-FOOT AREA OF OUTCROPPING BEDROCK, 56.1 M (184.1 FT) EAST OF THE
 JV3873'HIGHWAY CENTERLINE, 9.1 M (29.9 FT) NORTH OF THE CENTER OF A DRIVEWAY,
 JV3873'0.5 M (1.6 FT) BELOW THE LEVEL OF THE DRIVEWAY, AND 0.3 M (1.0 FT)
 JV3873'SOUTHWEST OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3939 ***********************************************************************
 JV3939  DESIGNATION -  F 146
 JV3939  PID         -  JV3939
 JV3939  STATE/COUNTY-  MD/WASHINGTON
 JV3939  COUNTRY     -  US
 JV3939  USGS QUAD   -  KEEDYSVILLE (2016)
 JV3939
 JV3939                         *CURRENT SURVEY CONTROL
 JV3939  ______________________________________________________________________
 JV3939* NAD 83(1986) POSITION- 39 23 18.63   (N) 077 39 25.08   (W)   HD_HELD1
 JV3939* NAVD 88 ORTHO HEIGHT -   193.686 (meters)      635.45  (feet) ADJUSTED
 JV3939  ______________________________________________________________________
 JV3939  GEOID HEIGHT    -        -33.322 (meters)                     GEOID18
 JV3939  DYNAMIC HEIGHT  -        193.572 (meters)      635.08  (feet) COMP
 JV3939  MODELED GRAVITY -    980,037.5   (mgal)                       NAVD 88
 JV3939
 JV3939  VERT ORDER      -  FIRST     CLASS II
 JV3939
 JV3939.The horizontal coordinates were determined by differentially corrected
 JV3939.hand held GPS observations or other comparable positioning techniques
 JV3939.and have an estimated accuracy of +/- 3 meters.
 JV3939
 JV3939.The orthometric height was determined by differential leveling and
 JV3939.adjusted by the NATIONAL GEODETIC SURVEY
 JV3939.in June 1991.
 JV3939
 JV3939.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3939.GEOID18 height accuracy estimate available here.
 JV3939
 JV3939.Click photographs - Photos may exist for this station.
 JV3939
 JV3939.The dynamic height is computed by dividing the NAVD 88
 JV3939.geopotential number by the normal gravity value computed on the
 JV3939.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3939.degrees latitude (g = 980.6199 gals.).
 JV3939
 JV3939.The modeled gravity was interpolated from observed gravity values.
 JV3939
 JV3939;                    North         East    Units  Estimated Accuracy
 JV3939;SPC MD       -   191,340.3     343,402.9     MT  (+/- 3 meters HH1 GPS) 
 JV3939
 JV3939_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7117563259(NAD 83)
 JV3939
 JV3939                          SUPERSEDED SURVEY CONTROL
 JV3939
 JV3939.No superseded survey control is available for this station.
 JV3939
 JV3939_MARKER: DV = VERTICAL CONTROL DISK
 JV3939_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3939_STAMPING: F 146 1979
 JV3939_MARK LOGO: NGS
 JV3939_PROJECTION: RECESSED 10 CENTIMETERS
 JV3939_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3939_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3939_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3939+SATELLITE: SATELLITE OBSERVATIONS - May 27, 2021
 JV3939_ROD/PIPE-DEPTH: 4.6 meters
 JV3939
 JV3939  HISTORY     - Date     Condition        Report By
 JV3939  HISTORY     - 1979     MONUMENTED       NGS
 JV3939  HISTORY     - 20100726 GOOD             INDIV
 JV3939  HISTORY     - 20210527 GOOD             BASE9
 JV3939
 JV3939                          STATION DESCRIPTION
 JV3939
 JV3939'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3939'4.35 MI NE FROM WEVERTON.
 JV3939'4.35 MILES NORTHEAST ALONG STATE ROUTE 67 FROM THE NORTH END OF THE
 JV3939'ROUTE 67 OVERPASS BRIDGE OVER U.S. HIGHWAY 340 TO THE MARK ON THE
 JV3939'LEFT, 0.6 MILE NORTHEAST OF BROWNSVILLE ROAD, 56 FEET WEST OF THE
 JV3939'CENTER LINE OF ROUTE 67, 39 FEET NORTHEAST OF THE NORTHEAST CORNER OF
 JV3939'SINGLE STORY HOUSE WITH A 2 DOOR GARAGE OWNED BY MR BOLT, 2 FEET WEST
 JV3939'OF POWER POLE 336, F36360, WITH A TRANSFORMER AND A STREET LIGHT, 2
 JV3939'FEET WEST OF TELEPHONE CABLE JUNCTION BOX 336.
 JV3939'THE MARK IS 3 FT  W FROM A WITNESS POST.
 JV3939'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JV3939
 JV3939                          STATION RECOVERY (2010)
 JV3939
 JV3939'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2010
 JV3939'RECOVERED AS DESCRIBED. CAP IS MISSING FROM TOP OF PVC TUBE AROUND
 JV3939'MARKER. WITNESS SIGN IS ATTACHED TO BASE OF PP F36360 AND IS VISIBLE
 JV3939'FROM RT67
 JV3939
 JV3939                          STATION RECOVERY (2021)
 JV3939
 JV3939'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2021 (DRD)
 JV3939'THE MARK IS BETWEEN THE END OF A WOODEN FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3846 ***********************************************************************
 JV3846  DESIGNATION -  F 147
 JV3846  PID         -  JV3846
 JV3846  STATE/COUNTY-  MD/MONTGOMERY
 JV3846  COUNTRY     -  US
 JV3846  USGS QUAD   -  ROCKVILLE (2016)
 JV3846
 JV3846                         *CURRENT SURVEY CONTROL
 JV3846  ______________________________________________________________________
 JV3846* NAD 83(1986) POSITION- 39 03 57.     (N) 077 07 39.     (W)   SCALED
 JV3846* NAVD 88 ORTHO HEIGHT -   118.089 (meters)      387.43  (feet) ADJUSTED
 JV3846  ______________________________________________________________________
 JV3846  GEOID HEIGHT    -        -31.760 (meters)                     GEOID18
 JV3846  DYNAMIC HEIGHT  -        118.027 (meters)      387.23  (feet) COMP
 JV3846  MODELED GRAVITY -    980,098.4   (mgal)                       NAVD 88
 JV3846
 JV3846  VERT ORDER      -  FIRST     CLASS II
 JV3846
 JV3846.The horizontal coordinates were scaled from a map and have
 JV3846.an estimated accuracy of +/- 6 seconds.
 JV3846
 JV3846.The orthometric height was determined by differential leveling and
 JV3846.adjusted by the NATIONAL GEODETIC SURVEY
 JV3846.in June 1991.
 JV3846
 JV3846.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3846.GEOID18 height accuracy estimate available here.
 JV3846
 JV3846.Click photographs - Photos may exist for this station.
 JV3846
 JV3846.The dynamic height is computed by dividing the NAVD 88
 JV3846.geopotential number by the normal gravity value computed on the
 JV3846.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3846.degrees latitude (g = 980.6199 gals.).
 JV3846
 JV3846.The modeled gravity was interpolated from observed gravity values.
 JV3846
 JV3846;                    North         East    Units  Estimated Accuracy
 JV3846;SPC MD       -   155,320.      388,970.      MT  (+/- 180 meters Scaled)
 JV3846
 JV3846_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ159262(NAD 83)
 JV3846
 JV3846                          SUPERSEDED SURVEY CONTROL
 JV3846
 JV3846.No superseded survey control is available for this station.
 JV3846
 JV3846_MARKER: DV = VERTICAL CONTROL DISK
 JV3846_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3846_STAMPING: F 147 1979
 JV3846_MARK LOGO: NGS
 JV3846_PROJECTION: RECESSED 10 CENTIMETERS
 JV3846_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3846_ROD/PIPE-DEPTH: 4.6 meters
 JV3846
 JV3846  HISTORY     - Date     Condition        Report By
 JV3846  HISTORY     - 1979     MONUMENTED       NGS
 JV3846  HISTORY     - 20020125 MARK NOT FOUND   MDSHA
 JV3846
 JV3846                          STATION DESCRIPTION
 JV3846
 JV3846'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3846'IN ROCKVILLE.
 JV3846'IN ROCKVILLE, 1.2 MILES NORTHWEST ALONG STATE ROUTE 355, ROCKVILLE
 JV3846'PIKE FROM THE JUNCTION OF MONTROSE ROAD TO THE MARK ON THE RIGHT,
 JV3846'97 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF KIMELS STUDIO OF INTERIOR
 JV3846'BUILDING, 17.5 FEET EAST OF THE EAST CURB OF ROUTE 355, AND 1.5 FEET
 JV3846'SOUTH OF POWER POLE 763449-5425.
 JV3846'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JV3846
 JV3846                          STATION RECOVERY (2002)
 JV3846
 JV3846'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV3846'THE STATION WAS SEARCHED FOR AND NOT RECOVERED. APPEARS THE STATION
 JV3846'HAS BEEN DESTROYED BY ROAD IMPROVEMENTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0668 ***********************************************************************
 JW0668  DESIGNATION -  F 15
 JW0668  PID         -  JW0668
 JW0668  STATE/COUNTY-  MD/GARRETT
 JW0668  COUNTRY     -  US
 JW0668  USGS QUAD   -  DEER PARK (2016)
 JW0668
 JW0668                         *CURRENT SURVEY CONTROL
 JW0668  ______________________________________________________________________
 JW0668* NAD 83(1986) POSITION- 39 24 24.     (N) 079 20 42.     (W)   SCALED
 JW0668* NAVD 88 ORTHO HEIGHT -   739.403 (meters)     2425.86  (feet) POSTED
 JW0668  ______________________________________________________________________
 JW0668  GEOID HEIGHT    -        -31.182 (meters)                     GEOID18
 JW0668  DYNAMIC HEIGHT  -        738.89  (meters)     2424.2   (feet) COMP
 JW0668  MODELED GRAVITY -    979,912.0   (mgal)                       NAVD 88
 JW0668
 JW0668  VERT ORDER      -  * POSTED, SEE BELOW
 JW0668
 JW0668.The horizontal coordinates were scaled from a map and have
 JW0668.an estimated accuracy of +/- 6 seconds.
 JW0668
 JW0668.The orthometric height was determined by differential leveling
 JW0668.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JW0668
 JW0668.* This is a POSTED BENCH MARK height.
 JW0668
 JW0668.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0668.GEOID18 height accuracy estimate available here.
 JW0668
 JW0668.Click photographs - Photos may exist for this station.
 JW0668
 JW0668.The dynamic height is computed by dividing the NAVD 88
 JW0668.geopotential number by the normal gravity value computed on the
 JW0668.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0668.degrees latitude (g = 980.6199 gals.).
 JW0668
 JW0668.The modeled gravity was interpolated from observed gravity values.
 JW0668
 JW0668;                    North         East    Units  Estimated Accuracy
 JW0668;SPC MD       -   195,750.      198,050.      MT  (+/- 180 meters Scaled)
 JW0668
 JW0668_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD424632(NAD 83)
 JW0668
 JW0668                          SUPERSEDED SURVEY CONTROL
 JW0668
 JW0668  NGVD 29 (??/??/92)  739.522  (m)         2426.25   (f) ADJ UNCH    1 2
 JW0668
 JW0668.Superseded values are not recommended for survey control.
 JW0668
 JW0668.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0668.See file dsdata.pdf to determine how the superseded data were derived.
 JW0668
 JW0668_MARKER: DB = BENCH MARK DISK
 JW0668_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0668_SP_SET: BRIDGE
 JW0668_STAMPING: F 15 1935
 JW0668_MARK LOGO: CGS
 JW0668_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0668
 JW0668  HISTORY     - Date     Condition        Report By
 JW0668  HISTORY     - 1935     MONUMENTED       CGS
 JW0668  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0668
 JW0668                          STATION DESCRIPTION
 JW0668
 JW0668'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0668'4.2 MI NE FROM OAKLAND.
 JW0668'ABOUT 4.2 MILES NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD
 JW0668'FROM THE CROSSING OF SECOND STREET AT OAKLAND, GARRETT COUNTY,
 JW0668'ABOUT 1.8 MILES NORTHEAST OF THE STATION AT MOUNTAIN LAKE PARK,
 JW0668'ABOUT 240 FEET SOUTHEAST OF POLE 227+30, AT A HIGHWAY BRIDGE OVER
 JW0668'A SMALL STREAM, IN THE TOP OF THE NORTHWEST CORNER OF THE NORTH
 JW0668'CONCRETE ABUTMENT, AND 33 FEET SOUTH OF THE CENTER LINE OF THE
 JW0668'SOUTH MAIN TRACK.  A STANDARD DISK, STAMPED F 15 1935.
 JW0668
 JW0668                          STATION RECOVERY (1983)
 JW0668
 JW0668'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0668'NOT RECOVERED, THE HIGHWAY HAS BEEN REROUTED AND THE BRIDGE DESTROYED,
 JW0668'CONSIDERED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6430 ***********************************************************************
 JV6430  DESIGNATION -  F 16
 JV6430  PID         -  JV6430
 JV6430  STATE/COUNTY-  MD/MONTGOMERY
 JV6430  COUNTRY     -  US
 JV6430  USGS QUAD   -  BELTSVILLE (2016)
 JV6430
 JV6430                         *CURRENT SURVEY CONTROL
 JV6430  ______________________________________________________________________
 JV6430* NAD 83(1986) POSITION- 39 02 00.     (N) 076 59 11.     (W)   SCALED
 JV6430* NAVD 88 ORTHO HEIGHT -   111.310 (meters)      365.19  (feet) ADJUSTED
 JV6430  ______________________________________________________________________
 JV6430  GEOID HEIGHT    -        -32.011 (meters)                     GEOID18
 JV6430  DYNAMIC HEIGHT  -        111.251 (meters)      365.00  (feet) COMP
 JV6430  MODELED GRAVITY -    980,092.0   (mgal)                       NAVD 88
 JV6430
 JV6430  VERT ORDER      -  SECOND    CLASS I
 JV6430
 JV6430.The horizontal coordinates were scaled from a map and have
 JV6430.an estimated accuracy of +/- 6 seconds.
 JV6430
 JV6430.The orthometric height was determined by differential leveling and
 JV6430.adjusted by the NATIONAL GEODETIC SURVEY
 JV6430.in June 1991.
 JV6430
 JV6430.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6430.GEOID18 height accuracy estimate available here.
 JV6430
 JV6430.Click photographs - Photos may exist for this station.
 JV6430
 JV6430.The dynamic height is computed by dividing the NAVD 88
 JV6430.geopotential number by the normal gravity value computed on the
 JV6430.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6430.degrees latitude (g = 980.6199 gals.).
 JV6430
 JV6430.The modeled gravity was interpolated from observed gravity values.
 JV6430
 JV6430;                    North         East    Units  Estimated Accuracy
 JV6430;SPC MD       -   151,710.      401,180.      MT  (+/- 180 meters Scaled)
 JV6430
 JV6430_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ280223(NAD 83)
 JV6430
 JV6430                          SUPERSEDED SURVEY CONTROL
 JV6430
 JV6430.No superseded survey control is available for this station.
 JV6430
 JV6430_MARKER: DB = BENCH MARK DISK
 JV6430_SETTING: 0 = UNSPECIFIED SETTING
 JV6430_STAMPING: F 16 1951
 JV6430_MARK LOGO: CGS
 JV6430_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6430_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6430_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6430+SATELLITE: SATELLITE OBSERVATIONS - 1951
 JV6430
 JV6430  HISTORY     - Date     Condition        Report By
 JV6430  HISTORY     - 1951     MONUMENTED       CGS
 JV6430
 JV6430                          STATION DESCRIPTION
 JV6430
 JV6430'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV6430'IN WHITE OAK, ON THE NAVAL SURFACE WEAPONS CENTER GROUNDS, AT THE
 JV6430'WEST GATE.  NO OTHER INFORMATION AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1143 ***********************************************************************
 JW1143  DESIGNATION -  F 167
 JW1143  PID         -  JW1143
 JW1143  STATE/COUNTY-  MD/GARRETT
 JW1143  COUNTRY     -  US
 JW1143  USGS QUAD   -  DEER PARK (2016)
 JW1143
 JW1143                         *CURRENT SURVEY CONTROL
 JW1143  ______________________________________________________________________
 JW1143* NAD 83(1986) POSITION- 39 24 28.     (N) 079 21 11.     (W)   SCALED
 JW1143* NAVD 88 ORTHO HEIGHT -   760.833 (meters)     2496.17  (feet) ADJUSTED
 JW1143  ______________________________________________________________________
 JW1143  GEOID HEIGHT    -        -31.177 (meters)                     GEOID18
 JW1143  DYNAMIC HEIGHT  -        760.311 (meters)     2494.45  (feet) COMP
 JW1143  MODELED GRAVITY -    979,915.0   (mgal)                       NAVD 88
 JW1143
 JW1143  VERT ORDER      -  FIRST     CLASS II
 JW1143
 JW1143.The horizontal coordinates were scaled from a map and have
 JW1143.an estimated accuracy of +/- 6 seconds.
 JW1143
 JW1143.The orthometric height was determined by differential leveling and
 JW1143.adjusted by the NATIONAL GEODETIC SURVEY
 JW1143.in June 1991.
 JW1143
 JW1143.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1143.GEOID18 height accuracy estimate available here.
 JW1143
 JW1143.Click photographs - Photos may exist for this station.
 JW1143
 JW1143.The dynamic height is computed by dividing the NAVD 88
 JW1143.geopotential number by the normal gravity value computed on the
 JW1143.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1143.degrees latitude (g = 980.6199 gals.).
 JW1143
 JW1143.The modeled gravity was interpolated from observed gravity values.
 JW1143
 JW1143;                    North         East    Units  Estimated Accuracy
 JW1143;SPC MD       -   195,890.      197,360.      MT  (+/- 180 meters Scaled)
 JW1143
 JW1143_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD417633(NAD 83)
 JW1143
 JW1143                          SUPERSEDED SURVEY CONTROL
 JW1143
 JW1143.No superseded survey control is available for this station.
 JW1143
 JW1143_MARKER: I = METAL ROD
 JW1143_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JW1143_STAMPING: F 167 1983
 JW1143_MARK LOGO: NGS
 JW1143_PROJECTION: FLUSH
 JW1143_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1143_ROD/PIPE-DEPTH: 3.6 meters
 JW1143
 JW1143  HISTORY     - Date     Condition        Report By
 JW1143  HISTORY     - 1983     MONUMENTED       NGS
 JW1143
 JW1143                          STATION DESCRIPTION
 JW1143
 JW1143'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1143'4.7 KM (2.95 MI) EAST FROM OAKLAND.
 JW1143'4.7 KM (2.95 MI) EAST ALONG STATE HIGHWAY 135 FROM THE JUNCTION OF
 JW1143'U.S. HIGHWAY 219 IN OAKLAND TO THE MARK ON THE RIGHT, ON THE NORTHEAST
 JW1143'SIDE OF POWER POLE 29 DIRECTLY NORTHWEST OF DENNIES RESTAURANT,
 JW1143'15.54 METERS (51.0 FT) SOUTHEAST OF THE CENTERLINE OF THE HIGHWAY,
 JW1143'43.28 METERS (142.0 FT) NORTHEAST OF THE SOUTHWEST ENTRANCE ROAD FOR
 JW1143'THE RESTAURANT, 38.40 METERS (126.0 FT) WEST-NORTHWEST OF THE WEST
 JW1143'CORNER OF THE RESTAURANT, 1.06 METERS (3.5 FT) NORTHEAST OF THE POWER
 JW1143'POLE.
 JW1143'THE MARK IS 0.45 M ABOVE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1168 ***********************************************************************
 JW1168  DESIGNATION -  F 168
 JW1168  PID         -  JW1168
 JW1168  STATE/COUNTY-  MD/ALLEGANY
 JW1168  COUNTRY     -  US
 JW1168  USGS QUAD   -  LONACONING (2016)
 JW1168
 JW1168                         *CURRENT SURVEY CONTROL
 JW1168  ______________________________________________________________________
 JW1168* NAD 83(1986) POSITION- 39 31 34.     (N) 078 54 10.     (W)   SCALED
 JW1168* NAVD 88 ORTHO HEIGHT -   261.473 (meters)      857.85  (feet) ADJUSTED
 JW1168  ______________________________________________________________________
 JW1168  GEOID HEIGHT    -        -32.421 (meters)                     GEOID18
 JW1168  DYNAMIC HEIGHT  -        261.310 (meters)      857.31  (feet) COMP
 JW1168  MODELED GRAVITY -    980,000.6   (mgal)                       NAVD 88
 JW1168
 JW1168  VERT ORDER      -  FIRST     CLASS II
 JW1168
 JW1168.The horizontal coordinates were scaled from a map and have
 JW1168.an estimated accuracy of +/- 6 seconds.
 JW1168
 JW1168.The orthometric height was determined by differential leveling and
 JW1168.adjusted by the NATIONAL GEODETIC SURVEY
 JW1168.in June 1991.
 JW1168
 JW1168.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1168.GEOID18 height accuracy estimate available here.
 JW1168
 JW1168.Click photographs - Photos may exist for this station.
 JW1168
 JW1168.The dynamic height is computed by dividing the NAVD 88
 JW1168.geopotential number by the normal gravity value computed on the
 JW1168.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1168.degrees latitude (g = 980.6199 gals.).
 JW1168
 JW1168.The modeled gravity was interpolated from observed gravity values.
 JW1168
 JW1168;                    North         East    Units  Estimated Accuracy
 JW1168;SPC MD       -   208,120.      236,410.      MT  (+/- 180 meters Scaled)
 JW1168
 JW1168_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD802772(NAD 83)
 JW1168
 JW1168                          SUPERSEDED SURVEY CONTROL
 JW1168
 JW1168.No superseded survey control is available for this station.
 JW1168
 JW1168_MARKER: DV = VERTICAL CONTROL DISK
 JW1168_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JW1168_SP_SET: HEADWALL
 JW1168_STAMPING: F 168 1983
 JW1168_MARK LOGO: NGS
 JW1168_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1168
 JW1168  HISTORY     - Date     Condition        Report By
 JW1168  HISTORY     - 1983     MONUMENTED       NGS
 JW1168
 JW1168                          STATION DESCRIPTION
 JW1168
 JW1168'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1168'11.0 KM (6.8 MI) SW FROM CRESAPTOWN.
 JW1168'11.0 KM (6.8 MI) SOUTHWEST ALONG U.S. HIGHWAY 220 FROM THE CALVARY
 JW1168'BAPTIST CHURCH IN CRESAPTOWN TO THE MARK ON THE RIGHT, IN TOP OF THE
 JW1168'SOUTHWEST END OF THE NORTHWEST HEADWALL, ON BEDROCK, OF A DOUBLE
 JW1168'CHANNEL CULVERT UNDER THE HIGHWAY, 8.83 METERS (29.0 FT) NORTHWEST OF
 JW1168'THE CENTERLINE OF THE HIGHWAY, 8.70 METERS (28.5 FT) SOUTH-SOUTHWEST
 JW1168'OF A TELEPHONE POLE.
 JW1168'THE MARK IS 0.61 METERS  NE FROM A WITNESS POST.
 JW1168'THE MARK IS 0.18 M ABOVE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1573 ***********************************************************************
 JW1573  DESIGNATION -  F 169 RESET
 JW1573  PID         -  JW1573
 JW1573  STATE/COUNTY-  MD/ALLEGANY
 JW1573  COUNTRY     -  US
 JW1573  USGS QUAD   -  ARTEMAS (2019)
 JW1573
 JW1573                         *CURRENT SURVEY CONTROL
 JW1573  ______________________________________________________________________
 JW1573* NAD 83(1986) POSITION- 39 40 31.     (N) 078 27 29.     (W)   SCALED
 JW1573* NAVD 88 ORTHO HEIGHT -   233.68  (meters)      766.7   (feet) RESET
 JW1573  ______________________________________________________________________
 JW1573  GEOID HEIGHT    -        -33.387 (meters)                     GEOID18
 JW1573  VERT ORDER      -  THIRD
 JW1573
 JW1573.The horizontal coordinates were scaled from a map and have
 JW1573.an estimated accuracy of +/- 6 seconds.
 JW1573
 JW1573.The orthometric height was computed from unverified reset data.
 JW1573
 JW1573.No vertical observational check was made to the station.
 JW1573
 JW1573.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1573.GEOID18 height accuracy estimate available here.
 JW1573
 JW1573.Click photographs - Photos may exist for this station.
 JW1573
 JW1573;                    North         East    Units  Estimated Accuracy
 JW1573;SPC MD       -   223,980.      274,900.      MT  (+/- 180 meters Scaled)
 JW1573
 JW1573_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD180948(NAD 83)
 JW1573
 JW1573                          SUPERSEDED SURVEY CONTROL
 JW1573
 JW1573.No superseded survey control is available for this station.
 JW1573
 JW1573_MARKER: DB = BENCH MARK DISK
 JW1573_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW1573_SP_SET: BRIDGE ABUTMENT
 JW1573_STAMPING: F 169 RESET 1989
 JW1573_MARK LOGO: NGS
 JW1573_MAGNETIC: N = NO MAGNETIC MATERIAL
 JW1573_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1573+STABILITY: POSITION/ELEVATION WELL
 JW1573
 JW1573  HISTORY     - Date     Condition        Report By
 JW1573  HISTORY     - 1989     MONUMENTED       NGS
 JW1573
 JW1573                          STATION DESCRIPTION
 JW1573
 JW1573'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JW1573'TO REACH FROM A POINT WHERE OLD U.S. HIGHWAY 40 CROSSED OVER THE
 JW1573'FLINTSTONE CREEK NEAR THE SMALL TOWN OF FLINTSTONE, GO EAST ON OLD
 JW1573'U.S. HIGHWAY 40 FOR 5.8 KM (3.60 MI) TO A CROSSROADS AT OLD CUMBERLAND
 JW1573'ROAD.  CONTINUE EAST ON OLD U.S. HIGHWAY 40 FOR 2.9 KM (1.80 MI) TO A
 JW1573'POINT WHERE SMITHS ROAD CROSSES THE HIGHWAY.  CONTINUE EAST ON U.S.
 JW1573'HIGHWAY 40 FOR 1.9 KM (1.20 MI) TO THE MARK ON THE LEFT IN THE EAST
 JW1573'END OF THE PARAPET WALL ALONG THE SOUTH SIDE OF A BRIDGE FOR THE WEST
 JW1573'BOUND LANE OF NEW STATE HIGHWAY 48 WHERE IT CROSSES OVER FIFTEEN MILE
 JW1573'CREEK, IN THE SOUTHEAST CORNER OF THE PARAPET WALL OF A BRIDGE FOR THE
 JW1573'WEST BOUND LANE OF THE HIGHWAY,   5.8 M (19.0 FT) SOUTH OF THE CENTER
 JW1573'OF THE WESTBOUND LANE OF THE HIGHWAY, 25.15 M (82.5 FT) WEST OF A DROP
 JW1573'INLET, 13.1 M (43.0 FT) SOUTH-SOUTHEAST OF EAST END OF A CONCRETE WALL
 JW1573'ALONG THE NORTH SIDE OF THE HIGHWAY AND 34.3 M (112.5 FT) EAST OF A
 JW1573'METAL GRATE FOR A BRIDGE SCUPPER AND ABOUT 1.27 M (4.2 FT) HIGHER
 JW1573'THAN THE ROAD SURFACE WHERE IT CROSSES THE BRIDGE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0643 ***********************************************************************
 JW0643  DESIGNATION -  F 17 RESET
 JW0643  PID         -  JW0643
 JW0643  STATE/COUNTY-  MD/GARRETT
 JW0643  COUNTRY     -  US
 JW0643  USGS QUAD   -  MCHENRY (2016)
 JW0643
 JW0643                         *CURRENT SURVEY CONTROL
 JW0643  ______________________________________________________________________
 JW0643* NAD 83(1986) POSITION- 39 34 20.     (N) 079 22 15.     (W)   SCALED
 JW0643* NAVD 88 ORTHO HEIGHT -   811.22  (meters)     2661.5   (feet) RESET
 JW0643  ______________________________________________________________________
 JW0643  GEOID HEIGHT    -        -31.282 (meters)                     GEOID18
 JW0643  VERT ORDER      -  THIRD
 JW0643
 JW0643.The horizontal coordinates were scaled from a map and have
 JW0643.an estimated accuracy of +/- 6 seconds.
 JW0643
 JW0643.The orthometric height was computed from unverified reset data.
 JW0643
 JW0643.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0643.GEOID18 height accuracy estimate available here.
 JW0643
 JW0643.Click photographs - Photos may exist for this station.
 JW0643
 JW0643;                    North         East    Units  Estimated Accuracy
 JW0643;SPC MD       -   214,180.      196,310.      MT  (+/- 180 meters Scaled)
 JW0643
 JW0643_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD399815(NAD 83)
 JW0643
 JW0643                          SUPERSEDED SURVEY CONTROL
 JW0643
 JW0643.No superseded survey control is available for this station.
 JW0643
 JW0643_MARKER: DB = BENCH MARK DISK
 JW0643_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0643_STAMPING: F 17 RESET 1960
 JW0643_MARK LOGO: CGS
 JW0643_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0643+STABILITY: SURFACE MOTION
 JW0643
 JW0643  HISTORY     - Date     Condition        Report By
 JW0643  HISTORY     - 1960     MONUMENTED       MDSRC
 JW0643
 JW0643                          STATION DESCRIPTION
 JW0643
 JW0643'DESCRIBED BY MD STATE ROADS COMM 1960
 JW0643'5.6 MI SW FROM ACCIDENT.
 JW0643'THIS MARK IS LOCATED 5.6 MILES SOUTHWEST ALONG U.S. HIGHWAY
 JW0643'219 FROM THE NORTH CITY LIMITS OF ACCIDENT, 55.5 FEET WEST OF
 JW0643'THE CENTERLINE OF THE SOUTH BOUND LANE, 250 FEET NORTH OF A
 JW0643'PIPE OUTLET, 6.0 FEET EAST OF A 16-INCH MAPLE, 20.0 FEET NORTH
 JW0643'OF A TWIN MAPLE, 15.6 FEET NORTHWEST OF A 14-INCH OAK TREE,
 JW0643'SET AT THE EDGE OF THE WOODS ON LINE WITH THE FENCE LINE LEADING
 JW0643'WESTERLY AND SET IN THE TOP OF A CONCRETE POST PROJECTING 4
 JW0643'INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC9951 ***********************************************************************
 AC9951  DESIGNATION -  F 170
 AC9951  PID         -  AC9951
 AC9951  STATE/COUNTY-  MD/SOMERSET
 AC9951  COUNTRY     -  US
 AC9951  USGS QUAD   -  DEAL ISLAND (2016)
 AC9951
 AC9951                         *CURRENT SURVEY CONTROL
 AC9951  ______________________________________________________________________
 AC9951* NAD 83(1986) POSITION- 38 10 33.     (N) 075 56 10.     (W)   SCALED
 AC9951* NAVD 88 ORTHO HEIGHT -     1.801 (meters)        5.91  (feet) ADJUSTED
 AC9951  ______________________________________________________________________
 AC9951  GEOID HEIGHT    -        -35.789 (meters)                     GEOID18
 AC9951  DYNAMIC HEIGHT  -          1.800 (meters)        5.91  (feet) COMP
 AC9951  MODELED GRAVITY -    979,985.5   (mgal)                       NAVD 88
 AC9951
 AC9951  VERT ORDER      -  SECOND    CLASS I
 AC9951
 AC9951.The horizontal coordinates were scaled from a map and have
 AC9951.an estimated accuracy of +/- 6 seconds.
 AC9951
 AC9951.The orthometric height was determined by differential leveling and
 AC9951.adjusted by the NATIONAL GEODETIC SURVEY
 AC9951.in October 1997.
 AC9951
 AC9951.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC9951.GEOID18 height accuracy estimate available here.
 AC9951
 AC9951.Click photographs - Photos may exist for this station.
 AC9951
 AC9951.The dynamic height is computed by dividing the NAVD 88
 AC9951.geopotential number by the normal gravity value computed on the
 AC9951.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC9951.degrees latitude (g = 980.6199 gals.).
 AC9951
 AC9951.The modeled gravity was interpolated from observed gravity values.
 AC9951
 AC9951;                    North         East    Units  Estimated Accuracy
 AC9951;SPC MD       -    57,060.      493,220.      MT  (+/- 180 meters Scaled)
 AC9951
 AC9951_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH180257(NAD 83)
 AC9951
 AC9951                          SUPERSEDED SURVEY CONTROL
 AC9951
 AC9951.No superseded survey control is available for this station.
 AC9951
 AC9951_MARKER: DV = VERTICAL CONTROL DISK
 AC9951_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC9951_STAMPING: F 170 1987
 AC9951_MARK LOGO: NGS
 AC9951_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC9951_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC9951+STABILITY: SURFACE MOTION
 AC9951_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC9951+SATELLITE: SATELLITE OBSERVATIONS - 1987
 AC9951
 AC9951  HISTORY     - Date     Condition        Report By
 AC9951  HISTORY     - 1987     MONUMENTED       NGS
 AC9951
 AC9951                          STATION DESCRIPTION
 AC9951
 AC9951'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 AC9951'FROM THE POST OFFICE IN CHANCE GO SE FOR 70 M (229.7 FT) ON HAINES
 AC9951'POINT ROAD TO A ROAD CROSSING. TURN LEFT AND GO NE FOR 0.3 KM (0.20
 AC9951'MI) ON STATE HIGHWAY 363 TO THE MARK ON THE LEFT. 7.6 M (24.9 FT) NW
 AC9951'FROM THE CENTERLINE OF HIGHWAY 363, 1.2 M (3.9 FT) SW FROM TELEPHONE
 AC9951'POLE NO. 620, 15.1 M (49.5 FT) NW FROM POWERLINE POLE NO. 37117-86315,
 AC9951'AND 32 M (105.0 FT) SW FROM THE SW CORNER OF THE ROCK CREEK CHURCH
 AC9951'BELL TOWER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2213 ***********************************************************************
 HU2213  DESIGNATION -  F 171
 HU2213  PID         -  HU2213
 HU2213  STATE/COUNTY-  MD/WICOMICO
 HU2213  COUNTRY     -  US
 HU2213  USGS QUAD   -  HEBRON (2016)
 HU2213
 HU2213                         *CURRENT SURVEY CONTROL
 HU2213  ______________________________________________________________________
 HU2213* NAD 83(1986) POSITION- 38 29 13.5    (N) 075 44 59.2    (W)   HD_HELD2
 HU2213* NAVD 88 ORTHO HEIGHT -     8.342 (meters)       27.37  (feet) ADJUSTED
 HU2213  ______________________________________________________________________
 HU2213  GEOID HEIGHT    -        -35.566 (meters)                     GEOID18
 HU2213  DYNAMIC HEIGHT  -          8.337 (meters)       27.35  (feet) COMP
 HU2213  MODELED GRAVITY -    980,015.5   (mgal)                       NAVD 88
 HU2213
 HU2213  VERT ORDER      -  SECOND    CLASS I
 HU2213
 HU2213.The horizontal coordinates were established by autonomous hand held GPS
 HU2213.observations and have an estimated accuracy of +/- 10 meters.
 HU2213
 HU2213.The orthometric height was determined by differential leveling and
 HU2213.adjusted by the NATIONAL GEODETIC SURVEY
 HU2213.in June 1991.
 HU2213
 HU2213.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2213.GEOID18 height accuracy estimate available here.
 HU2213
 HU2213.Click photographs - Photos may exist for this station.
 HU2213
 HU2213.The dynamic height is computed by dividing the NAVD 88
 HU2213.geopotential number by the normal gravity value computed on the
 HU2213.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2213.degrees latitude (g = 980.6199 gals.).
 HU2213
 HU2213.The modeled gravity was interpolated from observed gravity values.
 HU2213
 HU2213;                    North         East    Units  Estimated Accuracy
 HU2213;SPC MD       -    91,816.      509,073.      MT  (+/- 10 meters HH2 GPS)
 HU2213
 HU2213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3460860126(NAD 83)
 HU2213
 HU2213                          SUPERSEDED SURVEY CONTROL
 HU2213
 HU2213  NGVD 29 (06/12/91)    8.587  (m)           28.17   (f) ADJUSTED    2 1
 HU2213
 HU2213.Superseded values are not recommended for survey control.
 HU2213
 HU2213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2213.See file dsdata.pdf to determine how the superseded data were derived.
 HU2213
 HU2213_MARKER: DV = VERTICAL CONTROL DISK
 HU2213_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2213_STAMPING: F 171 1989
 HU2213_MARK LOGO: NGS
 HU2213_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2213_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2213+STABILITY: SURFACE MOTION
 HU2213_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2213+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2017
 HU2213
 HU2213  HISTORY     - Date     Condition        Report By
 HU2213  HISTORY     - 1989     MONUMENTED       MDSHA
 HU2213  HISTORY     - 19900221 GOOD             NGS
 HU2213  HISTORY     - 20170606 GOOD             ARCSHE
 HU2213
 HU2213                          STATION DESCRIPTION
 HU2213
 HU2213'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2213'2.6 KM (1.62 MI) NORTHERLY ALONG STATE HIGHWAY 313 FROM THE JUNCTION
 HU2213'OF STATE HIGHWAY 54 IN MARDELA SPRINGS, ON THE OUTSIDE OF A CURVE,
 HU2213'12.7 M (41.67 FT) EAST OF THE CENTERLINE OF THE HIGHWAY, 1.3 M (4.27
 HU2213'FT) NORTH OF TELEPHONE PEDESTAL NUMBER 38, 0.8 M (2.62 FT) EAST OF
 HU2213'UTILITY POLE NUMBER 42577 97601 38, 0.6 M (1.97 FT) BELOW THE LEVEL
 HU2213'OF THE HIGHWAY, AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE
 HU2213'GROUND SURFACE.
 HU2213
 HU2213                          STATION RECOVERY (2017)
 HU2213
 HU2213'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2213'IT IS BETWEEN A POWER POLE AND GUY WIRE, 68.0 FT (20.7 M) SOUTH OF THE
 HU2213'PROJECTED SOUTH SIDE OF HOUSE NUMBER 10669 AND 3.6 FT (1.1 M) EAST OF
 HU2213'A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6174 ***********************************************************************
 JV6174  DESIGNATION -  F 172
 JV6174  PID         -  JV6174
 JV6174  STATE/COUNTY-  MD/HARFORD
 JV6174  COUNTRY     -  US
 JV6174  USGS QUAD   -  PHOENIX (2016)
 JV6174
 JV6174                         *CURRENT SURVEY CONTROL
 JV6174  ______________________________________________________________________
 JV6174* NAD 83(1986) POSITION- 39 36 16.     (N) 076 30 44.     (W)   SCALED
 JV6174* NAVD 88 ORTHO HEIGHT -   209.426 (meters)      687.09  (feet) ADJUSTED
 JV6174  ______________________________________________________________________
 JV6174  GEOID HEIGHT    -        -32.473 (meters)                     GEOID18
 JV6174  DYNAMIC HEIGHT  -        209.320 (meters)      686.74  (feet) COMP
 JV6174  MODELED GRAVITY -    980,111.5   (mgal)                       NAVD 88
 JV6174
 JV6174  VERT ORDER      -  FIRST     CLASS II
 JV6174
 JV6174.The horizontal coordinates were scaled from a map and have
 JV6174.an estimated accuracy of +/- 6 seconds.
 JV6174
 JV6174.The orthometric height was determined by differential leveling and
 JV6174.adjusted by the NATIONAL GEODETIC SURVEY
 JV6174.in June 1991.
 JV6174
 JV6174.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6174.GEOID18 height accuracy estimate available here.
 JV6174
 JV6174.Click photographs - Photos may exist for this station.
 JV6174
 JV6174.The dynamic height is computed by dividing the NAVD 88
 JV6174.geopotential number by the normal gravity value computed on the
 JV6174.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6174.degrees latitude (g = 980.6199 gals.).
 JV6174
 JV6174.The modeled gravity was interpolated from observed gravity values.
 JV6174
 JV6174;                    North         East    Units  Estimated Accuracy
 JV6174;SPC MD       -   215,220.      441,890.      MT  (+/- 180 meters Scaled)
 JV6174
 JV6174_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ701849(NAD 83)
 JV6174
 JV6174                          SUPERSEDED SURVEY CONTROL
 JV6174
 JV6174.No superseded survey control is available for this station.
 JV6174
 JV6174_MARKER: I = METAL ROD
 JV6174_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6174_STAMPING: F 172 1989
 JV6174_MARK LOGO: NGS
 JV6174_PROJECTION: FLUSH
 JV6174_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6174_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6174_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6174+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6174_ROD/PIPE-DEPTH: 7.6 meters
 JV6174
 JV6174  HISTORY     - Date     Condition        Report By
 JV6174  HISTORY     - 1989     MONUMENTED       NGS
 JV6174
 JV6174                          STATION DESCRIPTION
 JV6174
 JV6174'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6174'1.1 KM (0.70 MI) SOUTHERLY ALONG STATE HIGHWAY 146 FROM ITS JUNCTION
 JV6174'WITH STATE HIGHWAY 23 IN MADONNA, 11.6 M (38.1 FT) NORTH OF UTILITY
 JV6174'POLE NUMBER 26, 9.0 M (29.5 FT) EAST OF THE CENTERLINE OF THE
 JV6174'HIGHWAY, 5.2 M (17.1 FT) SOUTH OF A FIELD ENTRANCE, 2.5 M (8.2 FT)
 JV6174'SOUTH OF A FENCE CORNER, 0.3 M (1.0 FT) WEST OF A WITNESS POST AND
 JV6174'FENCE, AND 0.3 M (1.0 FT) BELOW THE LEVEL OF THE HIGHWAY.
 JV6174'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6204 ***********************************************************************
 JV6204  DESIGNATION -  F 173
 JV6204  PID         -  JV6204
 JV6204  STATE/COUNTY-  MD/HARFORD
 JV6204  COUNTRY     -  US
 JV6204  USGS QUAD   -  FAWN GROVE (2019)
 JV6204
 JV6204                         *CURRENT SURVEY CONTROL
 JV6204  ______________________________________________________________________
 JV6204* NAD 83(1986) POSITION- 39 39 00.4    (N) 076 24 37.5    (W)   HD_HELD2
 JV6204* NAVD 88 ORTHO HEIGHT -   118.029 (meters)      387.23  (feet) ADJUSTED
 JV6204  ______________________________________________________________________
 JV6204  GEOID HEIGHT    -        -32.634 (meters)                     GEOID18
 JV6204  DYNAMIC HEIGHT  -        117.969 (meters)      387.04  (feet) COMP
 JV6204  MODELED GRAVITY -    980,120.0   (mgal)                       NAVD 88
 JV6204
 JV6204  VERT ORDER      -  FIRST     CLASS II
 JV6204
 JV6204.The horizontal coordinates were established by autonomous hand held GPS
 JV6204.observations and have an estimated accuracy of +/- 10 meters.
 JV6204
 JV6204.The orthometric height was determined by differential leveling and
 JV6204.adjusted by the NATIONAL GEODETIC SURVEY
 JV6204.in June 1991.
 JV6204
 JV6204.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6204.GEOID18 height accuracy estimate available here.
 JV6204
 JV6204.Click photographs - Photos may exist for this station.
 JV6204
 JV6204.The dynamic height is computed by dividing the NAVD 88
 JV6204.geopotential number by the normal gravity value computed on the
 JV6204.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6204.degrees latitude (g = 980.6199 gals.).
 JV6204
 JV6204.The modeled gravity was interpolated from observed gravity values.
 JV6204
 JV6204;                    North         East    Units  Estimated Accuracy
 JV6204;SPC MD       -   220,345.      450,605.      MT  (+/- 10 meters HH2 GPS)
 JV6204
 JV6204_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7899289874(NAD 83)
 JV6204
 JV6204                          SUPERSEDED SURVEY CONTROL
 JV6204
 JV6204.No superseded survey control is available for this station.
 JV6204
 JV6204_MARKER: DV = VERTICAL CONTROL DISK
 JV6204_SETTING: 66 = SET IN ROCK OUTCROP
 JV6204_STAMPING: F 173 1989
 JV6204_MARK LOGO: NGS
 JV6204_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6204_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6204+STABILITY: POSITION/ELEVATION WELL
 JV6204_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6204+SATELLITE: SATELLITE OBSERVATIONS - November 03, 2004
 JV6204
 JV6204  HISTORY     - Date     Condition        Report By
 JV6204  HISTORY     - 1989     MONUMENTED       NGS
 JV6204  HISTORY     - 20041103 GOOD             GEOCAC
 JV6204
 JV6204                          STATION DESCRIPTION
 JV6204
 JV6204'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6204'2.5 KM (1.55 MI) SOUTHERLY ALONG STATE HIGHWAY 24 FROM THE JUNCTION
 JV6204'OF STATE HIGHWAY 165 IN BUSHS CORNER, IN THE NORTH END OF A 60 FOOT
 JV6204'EXPOSED AREA OF BEDROCK IN A HIGHWAY CUT, 33.0 M (108.3 FT) SOUTH OF
 JV6204'THE CENTERLINE OF COEN ROAD, 8.8 M (28.9 FT) EAST OF THE CENTERLINE
 JV6204'OF THE HIGHWAY, 3.0 M (9.8 FT) ABOVE THE LEVEL OF THE HIGHWAY, AND
 JV6204'0.2 M (0.7 FT) WEST OF A WITNESS POST.
 JV6204
 JV6204                          STATION RECOVERY (2004)
 JV6204
 JV6204'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6204'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6189 ***********************************************************************
 JV6189  DESIGNATION -  F 174
 JV6189  PID         -  JV6189
 JV6189  STATE/COUNTY-  MD/HARFORD
 JV6189  COUNTRY     -  US
 JV6189  USGS QUAD   -  DELTA (2019)
 JV6189
 JV6189                         *CURRENT SURVEY CONTROL
 JV6189  ______________________________________________________________________
 JV6189* NAD 83(1986) POSITION- 39 42 26.2    (N) 076 21 22.5    (W)   HD_HELD2
 JV6189* NAVD 88 ORTHO HEIGHT -   135.051 (meters)      443.08  (feet) ADJUSTED
 JV6189  ______________________________________________________________________
 JV6189  GEOID HEIGHT    -        -32.751 (meters)                     GEOID18
 JV6189  DYNAMIC HEIGHT  -        134.983 (meters)      442.86  (feet) COMP
 JV6189  MODELED GRAVITY -    980,119.0   (mgal)                       NAVD 88
 JV6189
 JV6189  VERT ORDER      -  FIRST     CLASS II
 JV6189
 JV6189.The horizontal coordinates were established by autonomous hand held GPS
 JV6189.observations and have an estimated accuracy of +/- 10 meters.
 JV6189
 JV6189.The orthometric height was determined by differential leveling and
 JV6189.adjusted by the NATIONAL GEODETIC SURVEY
 JV6189.in June 1991.
 JV6189
 JV6189.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6189.GEOID18 height accuracy estimate available here.
 JV6189
 JV6189.Click photographs - Photos may exist for this station.
 JV6189
 JV6189.The dynamic height is computed by dividing the NAVD 88
 JV6189.geopotential number by the normal gravity value computed on the
 JV6189.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6189.degrees latitude (g = 980.6199 gals.).
 JV6189
 JV6189.The modeled gravity was interpolated from observed gravity values.
 JV6189
 JV6189;                    North         East    Units  Estimated Accuracy
 JV6189;SPC MD       -   226,724.      455,209.      MT  (+/- 10 meters HH2 GPS)
 JV6189
 JV6189_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8373696147(NAD 83)
 JV6189
 JV6189                          SUPERSEDED SURVEY CONTROL
 JV6189
 JV6189.No superseded survey control is available for this station.
 JV6189
 JV6189_MARKER: DV = VERTICAL CONTROL DISK
 JV6189_SETTING: 66 = SET IN ROCK OUTCROP
 JV6189_STAMPING: F 174 1989
 JV6189_MARK LOGO: NGS
 JV6189_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6189_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6189+STABILITY: POSITION/ELEVATION WELL
 JV6189_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6189+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2004
 JV6189
 JV6189  HISTORY     - Date     Condition        Report By
 JV6189  HISTORY     - 1989     MONUMENTED       NGS
 JV6189  HISTORY     - 20041122 GOOD             GEOCAC
 JV6189
 JV6189                          STATION DESCRIPTION
 JV6189
 JV6189'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6189'0.8 KM (0.50 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 165 FROM THE
 JV6189'JUNCTION OF STATE HIGHWAY 136 IN WHITEFORD, NEAR THE CENTER OF A 4 BY
 JV6189'9 FOOT AREA OF OUTCROPPING BEDROCK, 25.3 M (83.0 FT) NORTH OF THE
 JV6189'CENTERLINE OF THE HIGHWAY, 0.3 M (1.0 FT) SOUTH OF A WITNESS POST,
 JV6189'AND LEVEL WITH THE HIGHWAY.
 JV6189
 JV6189                          STATION RECOVERY (2004)
 JV6189
 JV6189'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6189'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2474 ***********************************************************************
 HU2474  DESIGNATION -  F 175
 HU2474  PID         -  HU2474
 HU2474  STATE/COUNTY-  MD/WICOMICO
 HU2474  COUNTRY     -  US
 HU2474  USGS QUAD   -  WANGO (2016)
 HU2474
 HU2474                         *CURRENT SURVEY CONTROL
 HU2474  ______________________________________________________________________
 HU2474* NAD 83(1986) POSITION- 38 20 50.     (N) 075 29 13.     (W)   SCALED
 HU2474* NAVD 88 ORTHO HEIGHT -    15.398 (meters)       50.52  (feet) ADJUSTED
 HU2474  ______________________________________________________________________
 HU2474  GEOID HEIGHT    -        -35.918 (meters)                     GEOID18
 HU2474  DYNAMIC HEIGHT  -         15.388 (meters)       50.49  (feet) COMP
 HU2474  MODELED GRAVITY -    980,003.2   (mgal)                       NAVD 88
 HU2474
 HU2474  VERT ORDER      -  SECOND    CLASS I
 HU2474
 HU2474.The horizontal coordinates were scaled from a map and have
 HU2474.an estimated accuracy of +/- 6 seconds.
 HU2474
 HU2474.The orthometric height was determined by differential leveling and
 HU2474.adjusted by the NATIONAL GEODETIC SURVEY
 HU2474.in June 1991.
 HU2474
 HU2474.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2474.GEOID18 height accuracy estimate available here.
 HU2474
 HU2474.Click photographs - Photos may exist for this station.
 HU2474
 HU2474.The dynamic height is computed by dividing the NAVD 88
 HU2474.geopotential number by the normal gravity value computed on the
 HU2474.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2474.degrees latitude (g = 980.6199 gals.).
 HU2474
 HU2474.The modeled gravity was interpolated from observed gravity values.
 HU2474
 HU2474;                    North         East    Units  Estimated Accuracy
 HU2474;SPC MD       -    76,640.      532,260.      MT  (+/- 180 meters Scaled)
 HU2474
 HU2474_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH574444(NAD 83)
 HU2474
 HU2474                          SUPERSEDED SURVEY CONTROL
 HU2474
 HU2474  NGVD 29 (06/12/91)   15.644  (m)           51.33   (f) ADJUSTED    2 1
 HU2474
 HU2474.Superseded values are not recommended for survey control.
 HU2474
 HU2474.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2474.See file dsdata.pdf to determine how the superseded data were derived.
 HU2474
 HU2474_MARKER: I = METAL ROD
 HU2474_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2474_STAMPING: F 175 1990
 HU2474_MARK LOGO: NGS
 HU2474_PROJECTION: RECESSED 3 CENTIMETERS
 HU2474_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2474_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2474_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2474+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2474_ROD/PIPE-DEPTH: 22.3 meters
 HU2474_SLEEVE-DEPTH  : 0.9 meters
 HU2474
 HU2474  HISTORY     - Date     Condition        Report By
 HU2474  HISTORY     - 1990     MONUMENTED       NGS
 HU2474
 HU2474                          STATION DESCRIPTION
 HU2474
 HU2474'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2474'10.1 KM (6.28 MI) WESTERLY ALONG STATE HIGHWAY 350 (MOUNT HERMON ROAD)
 HU2474'FROM THE JUNCTION OF STATE HIGHWAY 354 (WILLARDS WHITON ROAD) IN
 HU2474'POWELLVILLE, 30.0 M (98.42 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF A
 HU2474'BRICK HOUSE, 9.0 M (29.53 FT) NORTH OF AND LEVEL WITH THE CENTERLINE
 HU2474'OF THE HIGHWAY, 7.4 M (24.28 FT) WEST OF THE CENTER OF BERRY ROAD,
 HU2474'AND 1.7 M (5.58 FT) WEST OF A UTILITY POLE.  NOTE--ACCESS TO THE
 HU2474'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2474'PROPERTY OWNED BY JACK POLLITT, RT 1 BOX 50, PARSONSBURG, MD 21849,
 HU2474'TELEPHONE NUMBER (301) 742-1032.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2510 ***********************************************************************
 HU2510  DESIGNATION -  F 176
 HU2510  PID         -  HU2510
 HU2510  STATE/COUNTY-  MD/WICOMICO
 HU2510  COUNTRY     -  US
 HU2510  USGS QUAD   -  EDEN (2016)
 HU2510
 HU2510                         *CURRENT SURVEY CONTROL
 HU2510  ______________________________________________________________________
 HU2510* NAD 83(1986) POSITION- 38 18 50.     (N) 075 38 13.     (W)   SCALED
 HU2510* NAVD 88 ORTHO HEIGHT -    12.629 (meters)       41.43  (feet) ADJUSTED
 HU2510  ______________________________________________________________________
 HU2510  GEOID HEIGHT    -        -35.878 (meters)                     GEOID18
 HU2510  DYNAMIC HEIGHT  -         12.621 (meters)       41.41  (feet) COMP
 HU2510  MODELED GRAVITY -    980,000.0   (mgal)                       NAVD 88
 HU2510
 HU2510  VERT ORDER      -  SECOND    CLASS I
 HU2510
 HU2510.The horizontal coordinates were scaled from a map and have
 HU2510.an estimated accuracy of +/- 6 seconds.
 HU2510
 HU2510.The orthometric height was determined by differential leveling and
 HU2510.adjusted by the NATIONAL GEODETIC SURVEY
 HU2510.in June 1991.
 HU2510
 HU2510.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2510.GEOID18 height accuracy estimate available here.
 HU2510
 HU2510.Click photographs - Photos may exist for this station.
 HU2510
 HU2510.The dynamic height is computed by dividing the NAVD 88
 HU2510.geopotential number by the normal gravity value computed on the
 HU2510.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2510.degrees latitude (g = 980.6199 gals.).
 HU2510
 HU2510.The modeled gravity was interpolated from observed gravity values.
 HU2510
 HU2510;                    North         East    Units  Estimated Accuracy
 HU2510;SPC MD       -    72,740.      519,200.      MT  (+/- 180 meters Scaled)
 HU2510
 HU2510_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH443408(NAD 83)
 HU2510
 HU2510                          SUPERSEDED SURVEY CONTROL
 HU2510
 HU2510  NGVD 29 (06/12/91)   12.884  (m)           42.27   (f) ADJUSTED    2 1
 HU2510
 HU2510.Superseded values are not recommended for survey control.
 HU2510
 HU2510.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2510.See file dsdata.pdf to determine how the superseded data were derived.
 HU2510
 HU2510_MARKER: I = METAL ROD
 HU2510_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2510_STAMPING: F 176 1990
 HU2510_MARK LOGO: NGS
 HU2510_PROJECTION: FLUSH
 HU2510_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2510_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2510_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2510+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2510_ROD/PIPE-DEPTH: 12.0 meters
 HU2510_SLEEVE-DEPTH  : 0.9 meters
 HU2510
 HU2510  HISTORY     - Date     Condition        Report By
 HU2510  HISTORY     - 1990     MONUMENTED       NGS
 HU2510
 HU2510                          STATION DESCRIPTION
 HU2510
 HU2510'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2510'0.3 KM (0.19 MI) WESTERLY ALONG ALLEN CUT OFF ROAD FROM ITS JUNCTION
 HU2510'WITH COUNTY ROAD 360 IN FRUITLAND, 17.0 M (55.77 FT) SOUTHWEST OF THE
 HU2510'SOUTHWEST CORNER OF A HOUSE, 15.5 M (50.85 FT) NORTH OF THE
 HU2510'CENTERLINE OF THE ROAD, 7.3 M (23.95 FT) WEST OF THE CENTER OF A
 HU2510'DRIVEWAY, AND 0.3 M (0.98 FT) BELOW THE LEVEL OF THE ROAD.
 HU2510'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE
 HU2510'MONUMENT IS ON PROPERTY OWNED BY JOHN PARSONS, P.O. BOX 413,
 HU2510'FRUITLAND, MD 21826, TELEPHONE NUMBER (301) 742-3810.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6209 ***********************************************************************
 JV6209  DESIGNATION -  F 177
 JV6209  PID         -  JV6209
 JV6209  STATE/COUNTY-  MD/HARFORD
 JV6209  COUNTRY     -  US
 JV6209  USGS QUAD   -  BEL AIR (2016)
 JV6209
 JV6209                         *CURRENT SURVEY CONTROL
 JV6209  ______________________________________________________________________
 JV6209* NAD 83(1986) POSITION- 39 34 19.     (N) 076 21 50.     (W)   SCALED
 JV6209* NAVD 88 ORTHO HEIGHT -   133.547 (meters)      438.15  (feet) ADJUSTED
 JV6209  ______________________________________________________________________
 JV6209  GEOID HEIGHT    -        -32.690 (meters)                     GEOID18
 JV6209  DYNAMIC HEIGHT  -        133.479 (meters)      437.92  (feet) COMP
 JV6209  MODELED GRAVITY -    980,118.7   (mgal)                       NAVD 88
 JV6209
 JV6209  VERT ORDER      -  FIRST     CLASS II
 JV6209
 JV6209.The horizontal coordinates were scaled from a map and have
 JV6209.an estimated accuracy of +/- 6 seconds.
 JV6209
 JV6209.The orthometric height was determined by differential leveling and
 JV6209.adjusted by the NATIONAL GEODETIC SURVEY
 JV6209.in June 1991.
 JV6209
 JV6209.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6209.GEOID18 height accuracy estimate available here.
 JV6209
 JV6209.Click photographs - Photos may exist for this station.
 JV6209
 JV6209.The dynamic height is computed by dividing the NAVD 88
 JV6209.geopotential number by the normal gravity value computed on the
 JV6209.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6209.degrees latitude (g = 980.6199 gals.).
 JV6209
 JV6209.The modeled gravity was interpolated from observed gravity values.
 JV6209
 JV6209;                    North         East    Units  Estimated Accuracy
 JV6209;SPC MD       -   211,690.      454,660.      MT  (+/- 180 meters Scaled)
 JV6209
 JV6209_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ828811(NAD 83)
 JV6209
 JV6209                          SUPERSEDED SURVEY CONTROL
 JV6209
 JV6209.No superseded survey control is available for this station.
 JV6209
 JV6209_MARKER: I = METAL ROD
 JV6209_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6209_STAMPING: F 177 1989
 JV6209_MARK LOGO: NGS
 JV6209_PROJECTION: FLUSH
 JV6209_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6209_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6209_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6209+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6209_ROD/PIPE-DEPTH: 8.4 meters
 JV6209
 JV6209  HISTORY     - Date     Condition        Report By
 JV6209  HISTORY     - 1989     MONUMENTED       NGS
 JV6209
 JV6209                          STATION DESCRIPTION
 JV6209
 JV6209'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6209'1.0 KM (0.60 MI) SOUTHERLY ALONG STATE HIGHWAY 24 FROM THE JUNCTION
 JV6209'OF JARRETTSVILLE ROAD IN FOREST HILL, THENCE 2.0 KM (1.25 MI)
 JV6209'EASTERLY ALONG STATE HIGHWAY 23, 12.8 M (42.0 FT) NORTHEAST OF THE
 JV6209'CENTERLINE OF THE HIGHWAY, 0.8 M (2.6 FT) NORTHEAST OF A GUARDRAIL,
 JV6209'0.3 M (1.0 FT) SOUTHWEST OF A WITNESS POST, AND LEVEL WITH THE
 JV6209'HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO
 JV6209'CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2512 ***********************************************************************
 HU2512  DESIGNATION -  F 178
 HU2512  PID         -  HU2512
 HU2512  STATE/COUNTY-  MD/WICOMICO
 HU2512  COUNTRY     -  US
 HU2512  USGS QUAD   -  EDEN (2016)
 HU2512
 HU2512                         *CURRENT SURVEY CONTROL
 HU2512  ______________________________________________________________________
 HU2512* NAD 83(1986) POSITION- 38 19 16.     (N) 075 42 21.     (W)   SCALED
 HU2512* NAVD 88 ORTHO HEIGHT -     6.976 (meters)       22.89  (feet) ADJUSTED
 HU2512  ______________________________________________________________________
 HU2512  GEOID HEIGHT    -        -35.820 (meters)                     GEOID18
 HU2512  DYNAMIC HEIGHT  -          6.971 (meters)       22.87  (feet) COMP
 HU2512  MODELED GRAVITY -    980,000.6   (mgal)                       NAVD 88
 HU2512
 HU2512  VERT ORDER      -  SECOND    CLASS I
 HU2512
 HU2512.The horizontal coordinates were scaled from a map and have
 HU2512.an estimated accuracy of +/- 6 seconds.
 HU2512
 HU2512.The orthometric height was determined by differential leveling and
 HU2512.adjusted by the NATIONAL GEODETIC SURVEY
 HU2512.in June 1991.
 HU2512
 HU2512.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2512.GEOID18 height accuracy estimate available here.
 HU2512
 HU2512.Click photographs - Photos may exist for this station.
 HU2512
 HU2512.The dynamic height is computed by dividing the NAVD 88
 HU2512.geopotential number by the normal gravity value computed on the
 HU2512.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2512.degrees latitude (g = 980.6199 gals.).
 HU2512
 HU2512.The modeled gravity was interpolated from observed gravity values.
 HU2512
 HU2512;                    North         East    Units  Estimated Accuracy
 HU2512;SPC MD       -    73,450.      513,170.      MT  (+/- 180 meters Scaled)
 HU2512
 HU2512_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH383416(NAD 83)
 HU2512
 HU2512                          SUPERSEDED SURVEY CONTROL
 HU2512
 HU2512  NGVD 29 (06/12/91)    7.231  (m)           23.72   (f) ADJUSTED    2 1
 HU2512
 HU2512.Superseded values are not recommended for survey control.
 HU2512
 HU2512.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2512.See file dsdata.pdf to determine how the superseded data were derived.
 HU2512
 HU2512_MARKER: I = METAL ROD
 HU2512_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2512_STAMPING: F 178 1990
 HU2512_MARK LOGO: NGS
 HU2512_PROJECTION: RECESSED 5 CENTIMETERS
 HU2512_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2512_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2512_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2512+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2512_ROD/PIPE-DEPTH: 16.9 meters
 HU2512_SLEEVE-DEPTH  : 0.9 meters
 HU2512
 HU2512  HISTORY     - Date     Condition        Report By
 HU2512  HISTORY     - 1990     MONUMENTED       NGS
 HU2512
 HU2512                          STATION DESCRIPTION
 HU2512
 HU2512'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2512'5.5 KM (3.42 MI) WESTERLY ALONG WALNUT TREE ROAD FROM THE JUNCTION OF
 HU2512'ALLEN ROAD IN FRUITLAND, THENCE 1.2 KM (0.75 MI) NORTHERLY ALONG
 HU2512'UPPER FERRY ROAD, 13.1 M (42.98 FT) NORTHWEST OF THE CENTERLINE OF
 HU2512'THE ROAD, 9.3 M (30.51 FT) NORTHEAST OF THE CENTER OF DITCH BANK ROAD
 HU2512', 0.3 M (0.98 FT) SOUTH OF A WITNESS POST, AND LEVEL WITH THE ROAD.
 HU2512'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2203 ***********************************************************************
 HU2203  DESIGNATION -  F 179
 HU2203  PID         -  HU2203
 HU2203  STATE/COUNTY-  MD/WICOMICO
 HU2203  COUNTRY     -  US
 HU2203  USGS QUAD   -  HEBRON (2016)
 HU2203
 HU2203                         *CURRENT SURVEY CONTROL
 HU2203  ______________________________________________________________________
 HU2203* NAD 83(1986) POSITION- 38 28 46.7    (N) 075 42 06.6    (W)   HD_HELD2
 HU2203* NAVD 88 ORTHO HEIGHT -    11.098 (meters)       36.41  (feet) ADJUSTED
 HU2203  ______________________________________________________________________
 HU2203  GEOID HEIGHT    -        -35.619 (meters)                     GEOID18
 HU2203  DYNAMIC HEIGHT  -         11.091 (meters)       36.39  (feet) COMP
 HU2203  MODELED GRAVITY -    980,014.8   (mgal)                       NAVD 88
 HU2203
 HU2203  VERT ORDER      -  SECOND    CLASS I
 HU2203
 HU2203.The horizontal coordinates were established by autonomous hand held GPS
 HU2203.observations and have an estimated accuracy of +/- 10 meters.
 HU2203
 HU2203.The orthometric height was determined by differential leveling and
 HU2203.adjusted by the NATIONAL GEODETIC SURVEY
 HU2203.in June 1991.
 HU2203
 HU2203.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2203.GEOID18 height accuracy estimate available here.
 HU2203
 HU2203.Click photographs - Photos may exist for this station.
 HU2203
 HU2203.The dynamic height is computed by dividing the NAVD 88
 HU2203.geopotential number by the normal gravity value computed on the
 HU2203.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2203.degrees latitude (g = 980.6199 gals.).
 HU2203
 HU2203.The modeled gravity was interpolated from observed gravity values.
 HU2203
 HU2203;                    North         East    Units  Estimated Accuracy
 HU2203;SPC MD       -    91,049.      513,268.      MT  (+/- 10 meters HH2 GPS)
 HU2203
 HU2203_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3878459267(NAD 83)
 HU2203
 HU2203                          SUPERSEDED SURVEY CONTROL
 HU2203
 HU2203  NGVD 29 (06/12/91)   11.344  (m)           37.22   (f) ADJUSTED    2 1
 HU2203
 HU2203.Superseded values are not recommended for survey control.
 HU2203
 HU2203.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2203.See file dsdata.pdf to determine how the superseded data were derived.
 HU2203
 HU2203_MARKER: F = FLANGE-ENCASED ROD
 HU2203_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2203_STAMPING: F 179 1990
 HU2203_MARK LOGO: NGS
 HU2203_PROJECTION: RECESSED 30 CENTIMETERS
 HU2203_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2203_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 HU2203+STABILITY: POSITION/ELEVATION WELL
 HU2203_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2203+SATELLITE: SATELLITE OBSERVATIONS - June 07, 2017
 HU2203_ROD/PIPE-DEPTH: 28.3 meters
 HU2203_SLEEVE-DEPTH  : 0.9 meters
 HU2203
 HU2203  HISTORY     - Date     Condition        Report By
 HU2203  HISTORY     - 1990     MONUMENTED       NGS
 HU2203  HISTORY     - 20170607 GOOD             ARCSHE
 HU2203
 HU2203                          STATION DESCRIPTION
 HU2203
 HU2203'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2203'3.6 KM (2.24 MI) EASTERLY ALONG STATE HIGHWAY 54 FROM THE JUNCTION OF
 HU2203'STATE HIGHWAY 313 IN MARDELA SPRINGS, THENCE 1.8 KM (1.12 MI)
 HU2203'NORTHERLY ALONG NORRIS TWILLEY ROAD, 55.2 M (181.10 FT) NORTH OF
 HU2203'UTILITY POLE NUMBER 714-61-28, 27.3 M (89.57 FT) NORTH OF THE CENTER
 HU2203'OF THE MOST NORTHERLY 1 OF 2 DRIVEWAYS, 11.7 M (38.39 FT) EAST OF THE
 HU2203'CENTERLINE OF THE ROAD, 4.8 M (15.75 FT) NORTH OF THE SOUTH END OF A
 HU2203'FENCE, 0.5 M (1.64 FT) WEST OF A WITNESS POST AND FENCE, AND LEVEL
 HU2203'WITH THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 HU2203'LOGO CAP.  THE MARK IS ON PROPERTY OWNED BY MR. DAVID STUDLEY, RT 2
 HU2203'BOX 106, DELMAR, MD 21875, TELEPHONE NUMBER (301) 883-3862.
 HU2203
 HU2203                          STATION RECOVERY (2017)
 HU2203
 HU2203'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2203'THE MARK IS IN THICK WOODS, 10 FT (3.0 M) EAST OF THE WEST EDGE OF
 HU2203'WOODS, ABOUT ON THE EXTENDED LINE OF A FENCE ACROSS THE ROAD.  THERE
 HU2203'IS NOT MUCH LEFT OF THE FENCE ADJOINING THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1516 ***********************************************************************
 HV1516  DESIGNATION -  F 18 RESET
 HV1516  PID         -  HV1516
 HV1516  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1516  COUNTRY     -  US
 HV1516  USGS QUAD   -  DEALE (2016)
 HV1516
 HV1516                         *CURRENT SURVEY CONTROL
 HV1516  ______________________________________________________________________
 HV1516* NAD 83(1986) POSITION- 38 51 28.45   (N) 076 36 34.70   (W)   HD_HELD1
 HV1516* NAVD 88 ORTHO HEIGHT -    59.799 (meters)      196.19  (feet) ADJUSTED
 HV1516  ______________________________________________________________________
 HV1516  GEOID HEIGHT    -        -33.263 (meters)                     GEOID18
 HV1516  DYNAMIC HEIGHT  -         59.765 (meters)      196.08  (feet) COMP
 HV1516  MODELED GRAVITY -    980,060.6   (mgal)                       NAVD 88
 HV1516
 HV1516  VERT ORDER      -  FIRST     CLASS I
 HV1516
 HV1516.The horizontal coordinates were determined by differentially corrected
 HV1516.hand held GPS observations or other comparable positioning techniques
 HV1516.and have an estimated accuracy of +/- 3 meters.
 HV1516
 HV1516.The orthometric height was determined by differential leveling and
 HV1516.adjusted by the NATIONAL GEODETIC SURVEY
 HV1516.in June 1991.
 HV1516
 HV1516.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1516.GEOID18 height accuracy estimate available here.
 HV1516
 HV1516.Click photographs - Photos may exist for this station.
 HV1516
 HV1516.The dynamic height is computed by dividing the NAVD 88
 HV1516.geopotential number by the normal gravity value computed on the
 HV1516.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1516.degrees latitude (g = 980.6199 gals.).
 HV1516
 HV1516.The modeled gravity was interpolated from observed gravity values.
 HV1516
 HV1516;                    North         East    Units  Estimated Accuracy
 HV1516;SPC MD       -   132,304.6     433,881.3     MT  (+/- 3 meters HH1 GPS) 
 HV1516
 HV1516_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6033602239(NAD 83)
 HV1516
 HV1516                          SUPERSEDED SURVEY CONTROL
 HV1516
 HV1516  NGVD 29 (11/26/84)   60.038  (m)          196.97   (f) ADJUSTED    1 1
 HV1516
 HV1516.Superseded values are not recommended for survey control.
 HV1516
 HV1516.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1516.See file dsdata.pdf to determine how the superseded data were derived.
 HV1516
 HV1516_MARKER: DB = BENCH MARK DISK
 HV1516_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1516_STAMPING: F 18 1935 RESET 1971
 HV1516_MARK LOGO: CGS
 HV1516_PROJECTION: RECESSED
 HV1516_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV1516_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1516+STABILITY: SURFACE MOTION
 HV1516_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV1516+SATELLITE: SATELLITE OBSERVATIONS - March 01, 2013
 HV1516
 HV1516  HISTORY     - Date     Condition        Report By
 HV1516  HISTORY     - 1971     MONUMENTED       NGS
 HV1516  HISTORY     - 19990413 GOOD             GEOMET
 HV1516  HISTORY     - 20041113 GOOD             USPSQD
 HV1516  HISTORY     - 20051215 GOOD             USPSQD
 HV1516  HISTORY     - 20101221 GOOD             NGS
 HV1516  HISTORY     - 20130301 GOOD             TWT
 HV1516
 HV1516                          STATION DESCRIPTION
 HV1516
 HV1516'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1516'1 MI SE FROM HARWOOD.
 HV1516'ABOUT 0.95 MILE SOUTHEAST ALONG STATE HIGHWAY 2 FROM THE
 HV1516'SOUTHWEST END OF THE SOUTHERN HIGH SCHOOL AT HARWOOD, ABOUT 0.8
 HV1516'MILE NORTHWEST OF THE JUNCTION OF STATE HIGHWAY 255, 44 1/2
 HV1516'FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 130.6
 HV1516'FEET SOUTH-SOUTHWEST OF THE SOUTH CORNER OF THE ONE-STORY
 HV1516'HOUSE OF MR. POLAND, 67 FEET SOUTHEAST OF THE CENTER LINE OF
 HV1516'A DRIVEWAY, 3 1/2 FEET SOUTHWEST OF POWER POLE NUMBER 386174,
 HV1516'1.2 FEET SOUTHWEST OF A METAL WITNESS POST, ABOUT 1/2 FOOT BELOW
 HV1516'THE LEVEL OF THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE
 HV1516'POST WHICH IS 5 INCHES BELOW THE SURFACE OF THE GROUND.
 HV1516
 HV1516                          STATION RECOVERY (1999)
 HV1516
 HV1516'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (DR)
 HV1516'RECOVERED AS DESCRIBED.
 HV1516
 HV1516                          STATION RECOVERY (2004)
 HV1516
 HV1516'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1516'RECOVERED IN GOOD CONDITION.
 HV1516
 HV1516                          STATION RECOVERY (2005)
 HV1516
 HV1516'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV1516'RECOVERED IN GOOD CONDITION.
 HV1516
 HV1516                          STATION RECOVERY (2010)
 HV1516
 HV1516'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HV1516'REFERENCES FROM 1971 CHECKED.
 HV1516
 HV1516                          STATION RECOVERY (2013)
 HV1516
 HV1516'RECOVERY NOTE BY TWT CONS ENG 2013 (KML)
 HV1516'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2178 ***********************************************************************
 HU2178  DESIGNATION -  F 180
 HU2178  PID         -  HU2178
 HU2178  STATE/COUNTY-  MD/WICOMICO
 HU2178  COUNTRY     -  US
 HU2178  USGS QUAD   -  WETIPQUIN (2016)
 HU2178
 HU2178                         *CURRENT SURVEY CONTROL
 HU2178  ______________________________________________________________________
 HU2178* NAD 83(1986) POSITION- 38 19 06.     (N) 075 47 20.     (W)   SCALED
 HU2178* NAVD 88 ORTHO HEIGHT -     3.010 (meters)        9.88  (feet) ADJUSTED
 HU2178  ______________________________________________________________________
 HU2178  GEOID HEIGHT    -        -35.766 (meters)                     GEOID18
 HU2178  DYNAMIC HEIGHT  -          3.008 (meters)        9.87  (feet) COMP
 HU2178  MODELED GRAVITY -    979,998.2   (mgal)                       NAVD 88
 HU2178
 HU2178  VERT ORDER      -  SECOND    CLASS I
 HU2178
 HU2178.The horizontal coordinates were scaled from a map and have
 HU2178.an estimated accuracy of +/- 6 seconds.
 HU2178
 HU2178.The orthometric height was determined by differential leveling and
 HU2178.adjusted by the NATIONAL GEODETIC SURVEY
 HU2178.in June 1991.
 HU2178
 HU2178.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2178.GEOID18 height accuracy estimate available here.
 HU2178
 HU2178.Click photographs - Photos may exist for this station.
 HU2178
 HU2178.The dynamic height is computed by dividing the NAVD 88
 HU2178.geopotential number by the normal gravity value computed on the
 HU2178.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2178.degrees latitude (g = 980.6199 gals.).
 HU2178
 HU2178.The modeled gravity was interpolated from observed gravity values.
 HU2178
 HU2178;                    North         East    Units  Estimated Accuracy
 HU2178;SPC MD       -    73,040.      505,910.      MT  (+/- 180 meters Scaled)
 HU2178
 HU2178_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH310414(NAD 83)
 HU2178
 HU2178                          SUPERSEDED SURVEY CONTROL
 HU2178
 HU2178  NGVD 29 (06/12/91)    3.264  (m)           10.71   (f) ADJUSTED    2 1
 HU2178
 HU2178.Superseded values are not recommended for survey control.
 HU2178
 HU2178.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2178.See file dsdata.pdf to determine how the superseded data were derived.
 HU2178
 HU2178_STAMPING: F 180 1990
 HU2178_MARK LOGO: NGS
 HU2178_PROJECTION: RECESSED 2 CENTIMETERS
 HU2178_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2178+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2178_ROD/PIPE-DEPTH: 11.7 meters
 HU2178_SLEEVE-DEPTH  : 0.9 meters
 HU2178
 HU2178  HISTORY     - Date     Condition        Report By
 HU2178  HISTORY     - 1990     MONUMENTED       NGS
 HU2178  HISTORY     - 20190513 MARK NOT FOUND   PROFLN
 HU2178
 HU2178                          STATION DESCRIPTION
 HU2178
 HU2178'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2178'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2178'OFFICE IN QUANTICO, THENCE 1.0 KM (0.62 MI) EASTERLY ALONG STATE
 HU2178'HIGHWAY 349, THENCE 7.0 KM (4.35 MI) SOUTHWESTERLY ALONG STATE
 HU2178'HIGHWAY 352, THENCE 1.2 KM (0.75 MI) NORTHWESTERLY ALONG HEAD OF THE
 HU2178'CREEK ROAD, 16.3 M (53.48 FT) EAST OF THE CORNER OF A HOUSE, 13.5 M
 HU2178'(44.29 FT) NORTHWEST OF UTILITY POLE NUMBER Y293 15, 8.5 M (27.89 FT)
 HU2178'SOUTHWEST OF AND LEVEL WITH THE CENTER OF THE ROAD, AND 5.0 M (16.40
 HU2178'FT) SOUTHEAST OF THE CENTER OF A DRIVEWAY.  NOTE--ACCESS TO THE DATUM
 HU2178'POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY
 HU2178'OWNED BY ALMA ASBURY, RT 1 BOX 246, QUANTICO, MD 21856, TELEPHONE
 HU2178'NUMBER (301) 873-2713.
 HU2178
 HU2178                          STATION RECOVERY (2019)
 HU2178
 HU2178'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2178'DID NOT GET THE TIES TO MATCH.  MIGHT BE AT MOBILE HOME 23845.  DID
 HU2178'NOT FIND POLE Y293 15 TO MEASURE FROM.  GAVE UP FOR NOW.  THE ROAD IS
 HU2178'TOO CURVY TO USE THE RUNNING DISTANCE FROM EITHER ADJOINING MARK -
 HU2178'GREEN OR G 180 - TO CHECK THE SCALED POSITION OR GET A BETTER ONE FOR
 HU2178'SEARCHING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2349 ***********************************************************************
 HU2349  DESIGNATION -  F 182
 HU2349  PID         -  HU2349
 HU2349  STATE/COUNTY-  MD/WORCESTER
 HU2349  COUNTRY     -  US
 HU2349  USGS QUAD   -  SALISBURY (2016)
 HU2349
 HU2349                         *CURRENT SURVEY CONTROL
 HU2349  ______________________________________________________________________
 HU2349* NAD 83(1986) POSITION- 38 16 47.     (N) 075 34 10.     (W)   SCALED
 HU2349* NAVD 88 ORTHO HEIGHT -    14.301 (meters)       46.92  (feet) ADJUSTED
 HU2349  ______________________________________________________________________
 HU2349  GEOID HEIGHT    -        -35.982 (meters)                     GEOID18
 HU2349  DYNAMIC HEIGHT  -         14.292 (meters)       46.89  (feet) COMP
 HU2349  MODELED GRAVITY -    979,996.2   (mgal)                       NAVD 88
 HU2349
 HU2349  VERT ORDER      -  SECOND    CLASS I
 HU2349
 HU2349.The horizontal coordinates were scaled from a map and have
 HU2349.an estimated accuracy of +/- 6 seconds.
 HU2349
 HU2349.The orthometric height was determined by differential leveling and
 HU2349.adjusted by the NATIONAL GEODETIC SURVEY
 HU2349.in June 1991.
 HU2349
 HU2349.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2349.GEOID18 height accuracy estimate available here.
 HU2349
 HU2349.Click photographs - Photos may exist for this station.
 HU2349
 HU2349.The dynamic height is computed by dividing the NAVD 88
 HU2349.geopotential number by the normal gravity value computed on the
 HU2349.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2349.degrees latitude (g = 980.6199 gals.).
 HU2349
 HU2349.The modeled gravity was interpolated from observed gravity values.
 HU2349
 HU2349;                    North         East    Units  Estimated Accuracy
 HU2349;SPC MD       -    69,030.      525,170.      MT  (+/- 180 meters Scaled)
 HU2349
 HU2349_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH501370(NAD 83)
 HU2349
 HU2349                          SUPERSEDED SURVEY CONTROL
 HU2349
 HU2349  NGVD 29 (06/12/91)   14.555  (m)           47.75   (f) ADJUSTED    2 1
 HU2349
 HU2349.Superseded values are not recommended for survey control.
 HU2349
 HU2349.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2349.See file dsdata.pdf to determine how the superseded data were derived.
 HU2349
 HU2349_MARKER: I = METAL ROD
 HU2349_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2349_STAMPING: F 182 1989
 HU2349_MARK LOGO: NGS
 HU2349_PROJECTION: FLUSH
 HU2349_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2349_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2349_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2349+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2007
 HU2349_ROD/PIPE-DEPTH: 23.0 meters
 HU2349_SLEEVE-DEPTH  : 0.9 meters
 HU2349
 HU2349  HISTORY     - Date     Condition        Report By
 HU2349  HISTORY     - 1989     MONUMENTED       NGS
 HU2349  HISTORY     - 20070330 GOOD             GPSSS
 HU2349
 HU2349                          STATION DESCRIPTION
 HU2349
 HU2349'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU2349'0.9 KM (0.56 MI) NORTHEASTERLY ALONG DIVISION STREET FROM ITS JUNCTION
 HU2349'WITH U.S. HIGHWAY 13 IN FRUITLAND, THENCE 6.1 KM (3.79 MI)
 HU2349'SOUTHEASTERLY ALONG ST LUKES ROAD, 74.0 M (242.78 FT) NORTHWEST OF THE
 HU2349'CENTER OF POCOMOKE ROAD, 23.6 M (77.43 FT) NORTHWEST OF A UTILITY
 HU2349'POLE, 21.8 M (71.52 FT) NORTH OF THE NORTHEAST CORNER OF A HOUSE,
 HU2349'19.8 M (64.96 FT) SOUTHEAST OF A DRIVEWAY, 9.3 M (30.51 FT) SOUTHWEST
 HU2349'OF THE CENTERLINE OF THE ROAD, AND LEVEL WITH THE ROAD.  NOTE--ACCESS
 HU2349'TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2349'PROPERTY OWNED BY DARMOND NUSE, ROUTE 1 BOX 744, ST LUKES ROAD,
 HU2349'SALISBURY, MD 21801, TELEPHONE NUMBER (301) 742-6239.
 HU2349
 HU2349                          STATION RECOVERY (2007)
 HU2349
 HU2349'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (CC)
 HU2349'RECOVERED BY CHRIS FROM HAMPSHIRE, HAMPSHIRE AND ANDREWS, INC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2328 ***********************************************************************
 HU2328  DESIGNATION -  F 183
 HU2328  PID         -  HU2328
 HU2328  STATE/COUNTY-  MD/WICOMICO
 HU2328  COUNTRY     -  US
 HU2328  USGS QUAD   -  DELMAR (2016)
 HU2328
 HU2328                         *CURRENT SURVEY CONTROL
 HU2328  ______________________________________________________________________
 HU2328* NAD 83(1986) POSITION- 38 26 43.81   (N) 075 33 37.61   (W)   HD_HELD1
 HU2328* NAVD 88 ORTHO HEIGHT -    15.365 (meters)       50.41  (feet) ADJUSTED
 HU2328  ______________________________________________________________________
 HU2328  GEOID HEIGHT    -        -35.750 (meters)                     GEOID18
 HU2328  DYNAMIC HEIGHT  -         15.355 (meters)       50.38  (feet) COMP
 HU2328  MODELED GRAVITY -    980,012.0   (mgal)                       NAVD 88
 HU2328
 HU2328  VERT ORDER      -  SECOND    CLASS I
 HU2328
 HU2328.The horizontal coordinates were determined by differentially corrected
 HU2328.hand held GPS observations or other comparable positioning techniques
 HU2328.and have an estimated accuracy of +/- 3 meters.
 HU2328
 HU2328.The orthometric height was determined by differential leveling and
 HU2328.adjusted by the NATIONAL GEODETIC SURVEY
 HU2328.in June 1991.
 HU2328
 HU2328.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2328.GEOID18 height accuracy estimate available here.
 HU2328
 HU2328.Click photographs - Photos may exist for this station.
 HU2328
 HU2328.The dynamic height is computed by dividing the NAVD 88
 HU2328.geopotential number by the normal gravity value computed on the
 HU2328.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2328.degrees latitude (g = 980.6199 gals.).
 HU2328
 HU2328.The modeled gravity was interpolated from observed gravity values.
 HU2328
 HU2328;                    North         East    Units  Estimated Accuracy
 HU2328;SPC MD       -    87,444.8     525,662.7     MT  (+/- 3 meters HH1 GPS) 
 HU2328
 HU2328_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5109355395(NAD 83)
 HU2328
 HU2328                          SUPERSEDED SURVEY CONTROL
 HU2328
 HU2328  NGVD 29 (06/12/91)   15.619  (m)           51.24   (f) ADJUSTED    2 1
 HU2328
 HU2328.Superseded values are not recommended for survey control.
 HU2328
 HU2328.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2328.See file dsdata.pdf to determine how the superseded data were derived.
 HU2328
 HU2328_MARKER: F = FLANGE-ENCASED ROD
 HU2328_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2328_STAMPING: F 183 1990
 HU2328_MARK LOGO: NGS
 HU2328_PROJECTION: FLUSH
 HU2328_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2328_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2328_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2328+SATELLITE: SATELLITE OBSERVATIONS - June 25, 2009
 HU2328_ROD/PIPE-DEPTH: 30.4 meters
 HU2328_SLEEVE-DEPTH  : 0.9 meters
 HU2328
 HU2328  HISTORY     - Date     Condition        Report By
 HU2328  HISTORY     - 1990     MONUMENTED       NGS
 HU2328  HISTORY     - 19990719 GOOD             MDSHA
 HU2328  HISTORY     - 20040719 MARK NOT FOUND   GEOCAC
 HU2328  HISTORY     - 20090625 GOOD             MDSHA
 HU2328
 HU2328                          STATION DESCRIPTION
 HU2328
 HU2328'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2328'1.1 KM (0.68 MI) SOUTHERLY ALONG U.S. HIGHWAY 13 FROM ITS JUNCTION
 HU2328'WITH STATE HIGHWAY 54 IN DELMAR, 25.1 M (82.35 FT) NORTHWEST OF A
 HU2328'UTILITY POLE NUMBER 47993 96048, 23.5 M (77.10 FT) NORTH OF THE
 HU2328'EXTENDED CENTER OF FOSKEY LANE, 8.5 M (27.89 FT) WEST OF THE
 HU2328'CENTERLINE OF THE NORTHBOUND LANES OF THE HIGHWAY, 1.5 M (4.92 FT)
 HU2328'SOUTH OF A WITNESS POST, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO
 HU2328'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2328
 HU2328                          STATION RECOVERY (1999)
 HU2328
 HU2328'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HU2328'RECOVERED AS DESCRIBED.
 HU2328
 HU2328                          STATION RECOVERY (2004)
 HU2328
 HU2328'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2328'MARK NOT FOUND.
 HU2328
 HU2328                          STATION RECOVERY (2009)
 HU2328
 HU2328'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (MW)
 HU2328'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2288 ***********************************************************************
 HU2288  DESIGNATION -  F 184
 HU2288  PID         -  HU2288
 HU2288  STATE/COUNTY-  MD/WICOMICO
 HU2288  COUNTRY     -  US
 HU2288  USGS QUAD   -  EDEN (2016)
 HU2288
 HU2288                         *CURRENT SURVEY CONTROL
 HU2288  ______________________________________________________________________
 HU2288* NAD 83(1986) POSITION- 38 20 47.39   (N) 075 41 44.09   (W)   HD_HELD1
 HU2288* NAVD 88 ORTHO HEIGHT -     6.690 (meters)       21.95  (feet) ADJUSTED
 HU2288  ______________________________________________________________________
 HU2288  GEOID HEIGHT    -        -35.782 (meters)                     GEOID18
 HU2288  DYNAMIC HEIGHT  -          6.686 (meters)       21.94  (feet) COMP
 HU2288  MODELED GRAVITY -    980,003.7   (mgal)                       NAVD 88
 HU2288
 HU2288  VERT ORDER      -  SECOND    CLASS I
 HU2288
 HU2288.The horizontal coordinates were determined by differentially corrected
 HU2288.hand held GPS observations or other comparable positioning techniques
 HU2288.and have an estimated accuracy of +/- 3 meters.
 HU2288
 HU2288.The orthometric height was determined by differential leveling and
 HU2288.adjusted by the NATIONAL GEODETIC SURVEY
 HU2288.in June 1991.
 HU2288
 HU2288.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2288.GEOID18 height accuracy estimate available here.
 HU2288
 HU2288.Click photographs - Photos may exist for this station.
 HU2288
 HU2288.The dynamic height is computed by dividing the NAVD 88
 HU2288.geopotential number by the normal gravity value computed on the
 HU2288.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2288.degrees latitude (g = 980.6199 gals.).
 HU2288
 HU2288.The modeled gravity was interpolated from observed gravity values.
 HU2288
 HU2288;                    North         East    Units  Estimated Accuracy
 HU2288;SPC MD       -    76,278.8     514,024.4     MT  (+/- 3 meters HH1 GPS) 
 HU2288
 HU2288_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3921844489(NAD 83)
 HU2288
 HU2288                          SUPERSEDED SURVEY CONTROL
 HU2288
 HU2288  NGVD 29 (06/12/91)    6.942  (m)           22.78   (f) ADJUSTED    2 1
 HU2288
 HU2288.Superseded values are not recommended for survey control.
 HU2288
 HU2288.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2288.See file dsdata.pdf to determine how the superseded data were derived.
 HU2288
 HU2288_MARKER: I = METAL ROD
 HU2288_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2288_STAMPING: F 184 1990
 HU2288_MARK LOGO: NGS
 HU2288_PROJECTION: RECESSED 2 CENTIMETERS
 HU2288_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2288_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2288_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2288+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2288_ROD/PIPE-DEPTH: 13.7 meters
 HU2288_SLEEVE-DEPTH  : 0.9 meters
 HU2288
 HU2288  HISTORY     - Date     Condition        Report By
 HU2288  HISTORY     - 1990     MONUMENTED       NGS
 HU2288
 HU2288                          STATION DESCRIPTION
 HU2288
 HU2288'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2288'8.2 KM (5.10 MI) SOUTHEASTERLY ALONG PEMBERTON DRIVE FROM THE
 HU2288'JUNCTION OF ELLEGOOD STREET IN SALISBURY, 41.5 M (136.15 FT)
 HU2288'NORTHEAST OF THE NORTHEAST CORNER OF A HOUSE, 13.9 M (45.60 FT) SOUTH
 HU2288'OF THE CENTER OF THE DRIVE, 13.1 M (42.98 FT) NORTH OF A UTILITY
 HU2288'POLE, 11.8 M (38.71 FT) WEST OF THE CENTER OF UPPER FERRY ROAD, AND
 HU2288'LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2288'5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY CAROL
 HU2288'CORRAGIN, ROUTE 12 BOX 225, SALISBURY, MD 21801, TELEPHONE NUMBER
 HU2288'(301) 742-4664.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2226 ***********************************************************************
 HU2226  DESIGNATION -  F 185
 HU2226  PID         -  HU2226
 HU2226  STATE/COUNTY-  MD/WICOMICO
 HU2226  COUNTRY     -  US
 HU2226  USGS QUAD   -  HEBRON (2016)
 HU2226
 HU2226                         *CURRENT SURVEY CONTROL
 HU2226  ______________________________________________________________________
 HU2226* NAD 83(1986) POSITION- 38 23 13.     (N) 075 43 43.     (W)   SCALED
 HU2226* NAVD 88 ORTHO HEIGHT -     6.664 (meters)       21.86  (feet) ADJUSTED
 HU2226  ______________________________________________________________________
 HU2226  GEOID HEIGHT    -        -35.690 (meters)                     GEOID18
 HU2226  DYNAMIC HEIGHT  -          6.660 (meters)       21.85  (feet) COMP
 HU2226  MODELED GRAVITY -    980,008.9   (mgal)                       NAVD 88
 HU2226
 HU2226  VERT ORDER      -  SECOND    CLASS I
 HU2226
 HU2226.The horizontal coordinates were scaled from a map and have
 HU2226.an estimated accuracy of +/- 6 seconds.
 HU2226
 HU2226.The orthometric height was determined by differential leveling and
 HU2226.adjusted by the NATIONAL GEODETIC SURVEY
 HU2226.in June 1991.
 HU2226
 HU2226.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2226.GEOID18 height accuracy estimate available here.
 HU2226
 HU2226.Click photographs - Photos may exist for this station.
 HU2226
 HU2226.The dynamic height is computed by dividing the NAVD 88
 HU2226.geopotential number by the normal gravity value computed on the
 HU2226.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2226.degrees latitude (g = 980.6199 gals.).
 HU2226
 HU2226.The modeled gravity was interpolated from observed gravity values.
 HU2226
 HU2226;                    North         East    Units  Estimated Accuracy
 HU2226;SPC MD       -    80,730.      511,080.      MT  (+/- 180 meters Scaled)
 HU2226
 HU2226_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH363489(NAD 83)
 HU2226
 HU2226                          SUPERSEDED SURVEY CONTROL
 HU2226
 HU2226  NGVD 29 (06/12/91)    6.913  (m)           22.68   (f) ADJUSTED    2 1
 HU2226
 HU2226.Superseded values are not recommended for survey control.
 HU2226
 HU2226.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2226.See file dsdata.pdf to determine how the superseded data were derived.
 HU2226
 HU2226_STAMPING: F 185 1990
 HU2226_MARK LOGO: NGS
 HU2226_PROJECTION: RECESSED 5 CENTIMETERS
 HU2226_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2226+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2226_ROD/PIPE-DEPTH: 15.8 meters
 HU2226_SLEEVE-DEPTH  : 0.9 meters
 HU2226
 HU2226  HISTORY     - Date     Condition        Report By
 HU2226  HISTORY     - 1990     MONUMENTED       NGS
 HU2226  HISTORY     - 20040719 MARK NOT FOUND   GEOCAC
 HU2226  HISTORY     - 20190513 MARK NOT FOUND   PROFLN
 HU2226
 HU2226                          STATION DESCRIPTION
 HU2226
 HU2226'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2226'4.9 KM (3.04 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU2226'ROAD) FROM THE JUNCTION OF RAILROAD AVENUE IN HEBRON, 37.5 M (123.03
 HU2226'FT) NORTHEAST OF THE CENTER OF A FIELD ENTRANCE ROAD, 28.8 M (94.49
 HU2226'FT) SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 0.4 M (1.31 FT)
 HU2226'NORTHWEST OF A WITNESS POST, AND LEVEL WITH THE HIGHWAY.
 HU2226'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2226
 HU2226                          STATION RECOVERY (2004)
 HU2226
 HU2226'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2226'MARK NOT FOUND.
 HU2226
 HU2226                          STATION RECOVERY (2019)
 HU2226
 HU2226'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2226'THE DIRECTION FROM THE CENTERLINE OF HIGHWAY IS WRONG BY 90 DEGREES -
 HU2226'SHOULD BE EITHER NW OR SOUTHEAST, NOT SW. THE WOODS TO THE SOUTHEAST
 HU2226'OF THE ROAD ARE MORE OPEN WITH FEWER THICK GREENBRIERS THAN THE WOODS
 HU2226'TO THE NORTHWEST, THEREFORE MAYBE A MORE LIKELY SPOT FOR THE MARK.
 HU2226'POSITIONS WERE SCALED IN GOOGLE EARTH USING THE RUNNING DISTANCE 1.33
 HU2226'KM (0.83 MI) NORTHEAST OF G 185 AND 1.12 KM (0.70 MI) SOUTHWEST OF E
 HU2226'185.  THESE FELL CLOSE TOGETHER AND YIELDED A POSITION NW OF THE ROAD
 HU2226'N 38 23 15.4, W 075 43 42.7. TO THE SOUTHEAST OF THE ROAD N 38 23
 HU2226'15.1, W 075 43 40.7.  THE AREA TO THE SOUTHEAST WAS SEARCHED BECAUSE
 HU2226'IT WAS REASONABLE BUT WITHOUT SUCCESS.  THE AREA TO THE NORTHWEST WAS
 HU2226'NOT SEARCHED - TOO THICK TO BE STUMBLING AROUND WITH NO GOOD TIES
 HU2226'EXCEPT ROAD CENTERLINE TO WORK FROM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2139 ***********************************************************************
 HU2139  DESIGNATION -  F 186
 HU2139  PID         -  HU2139
 HU2139  STATE/COUNTY-  MD/WICOMICO
 HU2139  COUNTRY     -  US
 HU2139  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2139
 HU2139                         *CURRENT SURVEY CONTROL
 HU2139  ______________________________________________________________________
 HU2139* NAD 83(1986) POSITION- 38 28 16.8    (N) 075 45 47.7    (W)   HD_HELD2
 HU2139* NAVD 88 ORTHO HEIGHT -     8.623 (meters)       28.29  (feet) ADJUSTED
 HU2139  ______________________________________________________________________
 HU2139  GEOID HEIGHT    -        -35.566 (meters)                     GEOID18
 HU2139  DYNAMIC HEIGHT  -          8.618 (meters)       28.27  (feet) COMP
 HU2139  MODELED GRAVITY -    980,015.0   (mgal)                       NAVD 88
 HU2139
 HU2139  VERT ORDER      -  SECOND    CLASS I
 HU2139
 HU2139.The horizontal coordinates were established by autonomous hand held GPS
 HU2139.observations and have an estimated accuracy of +/- 10 meters.
 HU2139
 HU2139.The orthometric height was determined by differential leveling and
 HU2139.adjusted by the NATIONAL GEODETIC SURVEY
 HU2139.in June 1991.
 HU2139
 HU2139.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2139.GEOID18 height accuracy estimate available here.
 HU2139
 HU2139.Click photographs - Photos may exist for this station.
 HU2139
 HU2139.The dynamic height is computed by dividing the NAVD 88
 HU2139.geopotential number by the normal gravity value computed on the
 HU2139.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2139.degrees latitude (g = 980.6199 gals.).
 HU2139
 HU2139.The modeled gravity was interpolated from observed gravity values.
 HU2139
 HU2139;                    North         East    Units  Estimated Accuracy
 HU2139;SPC MD       -    90,052.      507,922.      MT  (+/- 10 meters HH2 GPS)
 HU2139
 HU2139_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3341958388(NAD 83)
 HU2139
 HU2139                          SUPERSEDED SURVEY CONTROL
 HU2139
 HU2139  NGVD 29 (06/12/91)    8.868  (m)           29.09   (f) ADJUSTED    2 1
 HU2139
 HU2139.Superseded values are not recommended for survey control.
 HU2139
 HU2139.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2139.See file dsdata.pdf to determine how the superseded data were derived.
 HU2139
 HU2139_MARKER: F = FLANGE-ENCASED ROD
 HU2139_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2139_STAMPING: F 186 1990
 HU2139_MARK LOGO: NGS
 HU2139_PROJECTION: RECESSED 12 CENTIMETERS
 HU2139_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2139_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2139+SATELLITE: SATELLITE OBSERVATIONS - March 29, 2017
 HU2139_ROD/PIPE-DEPTH: 25.5 meters
 HU2139_SLEEVE-DEPTH  : 0.9 meters
 HU2139
 HU2139  HISTORY     - Date     Condition        Report By
 HU2139  HISTORY     - 1990     MONUMENTED       NGS
 HU2139  HISTORY     - 20170329 GOOD             PROFLN
 HU2139
 HU2139                          STATION DESCRIPTION
 HU2139
 HU2139'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2139'0.9 KM (0.56 MI) NORTHERLY ALONG STATE HIGHWAY 460 FROM THE JUNCTION
 HU2139'OF U.S. HIGHWAY 50 IN MARDELA SPRINGS, 18.6 M (61.02 FT) SOUTH OF
 HU2139'THE SOUTHEAST CORNER OF A HOUSE, 13.7 M (44.95 FT) NORTH OF THE
 HU2139'CENTER OF A DRIVEWAY, 11.2 M (36.75 FT) EAST OF A UTILITY PEDESTAL,
 HU2139'6.8 M (22.31 FT) SOUTH OF THE CENTER OF A DRIVEWAY, 6.4 M (21.00 FT)
 HU2139'SOUTHWEST OF UTILITY POLE NUMBER 711-65-17, 5.5 M (18.04 FT) EAST OF
 HU2139'THE CENTER OF THE HIGHWAY, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO
 HU2139'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2139'PROPERTY OWNED BY MR HOWARD SAULSBURY, RT 1 BOX 87, MARDELA SPRINGS,
 HU2139'MD 21837, TELEPHONE NUMBER (301) 546-1924.
 HU2139
 HU2139                          STATION RECOVERY (2017)
 HU2139
 HU2139'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2139'RECOVERED GOOD AFTER SORTING OUT SOME CONTRADICTIONS OF DESCRIPTION
 HU2139'AND POSITION.  THE ROAD IS APPARENTLY NO LONGER KNOWN AS STATE HIGHWAY
 HU2139'460, RATHER AS RIVERTON ROAD.  ADDITIONAL TIES ARE 61.5 FT (18.7 M)
 HU2139'SOUTHERLY FROM THE SOUTHWEST CORNER OF 2-STORY WHITE FRAME HOUSE
 HU2139'10073, BETWEEN THE ENDS OF A U-SHAPED DRIVEWAY, 46 FT (14.0 M) NORTH
 HU2139'OF THE SOUTH DRIVE, 25 FT (7.6 M) SOUTH OF THE NORTH DRIVE, 18.5 FT
 HU2139'(5.6 M) EASTERLY OF RIVERTON ROAD, 12 FT (3.7 M) WEST-NORTHWEST OF A
 HU2139'BIRDHOUSE, 7.5 FT (2.3 M) SOUTHEAST OF A WOODEN POST MAILBOX 10068, 7
 HU2139'FT (2.1 M) NORTH OF A TWIN-TRUNK HOLLY, 6 FT (1.8 M) SOUTH OF A
 HU2139'MANY-TRUNK CRAPE MYRTLE.  THE POLE NEARBY IS NUMBER 711-66-17.  THE
 HU2139'LOGO CAP IS 0.2 FT (6 CM) BELOW GROUND, MARK 0.4 FT (12 CM) BELOW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2257 ***********************************************************************
 HU2257  DESIGNATION -  F 187
 HU2257  PID         -  HU2257
 HU2257  STATE/COUNTY-  MD/WICOMICO
 HU2257  COUNTRY     -  US
 HU2257  USGS QUAD   -  WETIPQUIN (2016)
 HU2257
 HU2257                         *CURRENT SURVEY CONTROL
 HU2257  ______________________________________________________________________
 HU2257* NAD 83(1986) POSITION- 38 19 35.9    (N) 075 52 01.1    (W)   HD_HELD2
 HU2257* NAVD 88 ORTHO HEIGHT -     0.566 (meters)        1.86  (feet) ADJUSTED
 HU2257  ______________________________________________________________________
 HU2257  GEOID HEIGHT    -        -35.681 (meters)                     GEOID18
 HU2257  DYNAMIC HEIGHT  -          0.566 (meters)        1.86  (feet) COMP
 HU2257  MODELED GRAVITY -    979,998.2   (mgal)                       NAVD 88
 HU2257
 HU2257  VERT ORDER      -  SECOND    CLASS I
 HU2257
 HU2257.The horizontal coordinates were established by autonomous hand held GPS
 HU2257.observations and have an estimated accuracy of +/- 10 meters.
 HU2257
 HU2257.The orthometric height was determined by differential leveling and
 HU2257.adjusted by the NATIONAL GEODETIC SURVEY
 HU2257.in June 1991.
 HU2257
 HU2257.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2257.GEOID18 height accuracy estimate available here.
 HU2257
 HU2257.Click photographs - Photos may exist for this station.
 HU2257
 HU2257.The dynamic height is computed by dividing the NAVD 88
 HU2257.geopotential number by the normal gravity value computed on the
 HU2257.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2257.degrees latitude (g = 980.6199 gals.).
 HU2257
 HU2257.The modeled gravity was interpolated from observed gravity values.
 HU2257
 HU2257;                    North         East    Units  Estimated Accuracy
 HU2257;SPC MD       -    73,875.      499,071.      MT  (+/- 10 meters HH2 GPS)
 HU2257
 HU2257_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2422042412(NAD 83)
 HU2257
 HU2257                          SUPERSEDED SURVEY CONTROL
 HU2257
 HU2257  NGVD 29 (06/12/91)    0.820  (m)            2.69   (f) ADJUSTED    2 1
 HU2257
 HU2257.Superseded values are not recommended for survey control.
 HU2257
 HU2257.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2257.See file dsdata.pdf to determine how the superseded data were derived.
 HU2257
 HU2257_MARKER: F = FLANGE-ENCASED ROD
 HU2257_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2257_STAMPING: F 187 1990
 HU2257_MARK LOGO: NGS
 HU2257_PROJECTION: RECESSED 3 CENTIMETERS
 HU2257_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2257_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2257_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2257+SATELLITE: SATELLITE OBSERVATIONS - May 15, 2019
 HU2257_ROD/PIPE-DEPTH: 10.4 meters
 HU2257_SLEEVE-DEPTH  : 0.9 meters
 HU2257
 HU2257  HISTORY     - Date     Condition        Report By
 HU2257  HISTORY     - 1990     MONUMENTED       NGS
 HU2257  HISTORY     - 20190515 GOOD             PROFLN
 HU2257
 HU2257                          STATION DESCRIPTION
 HU2257
 HU2257'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2257'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2257'OFFICE IN QUANTICO, THENCE 7.8 KM (4.85 MI) WESTERLY ALONG STATE
 HU2257'HIGHWAY 349, THENCE 6.0 KM (3.73 MI) WESTERLY ALONG STATE HIGHWAY
 HU2257'478, 40.5 M (132.87 FT) WEST-SOUTHWEST OF THE CENER OF THE HIGHWAY,
 HU2257'40.5 M (132.87 FT) WEST OF THE SOUTHWEST CORNER OF A HIGHWAY BRIDGE
 HU2257'SPANNING WETIPQUIN CREEK, 23.3 M (76.44 FT) NORTH-NORTHEAST OF THE
 HU2257'NORTH CORNER OF A LARGE CONCRETE SLAB, 8.2 M (26.90 FT) WEST OF THE
 HU2257'CENTER OF A BOAT RAMP, 1.4 M (4.59 FT) SOUTH-SOUTHWEST OF A UTILITY
 HU2257'LIGHT POLE, 1.4 M (4.59 FT) BELOW THE LEVEL OF THE HIGHWAY, AND 0.3 M
 HU2257'(0.98 FT) SOUTH OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT
 HU2257'IS THROUGH A 5-INCH LOGO CAP.
 HU2257
 HU2257                          STATION RECOVERY (2019)
 HU2257
 HU2257'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2257'THE MARK IS AT THE NORTHWEST CORNER OF THE WETIPQUIN BOAT RAMP, 9 FT
 HU2257'(2.7 M) WEST OF THE EXTENDED CENTER OF THE WESTERLY BOARDWALK AND 3 FT
 HU2257'(0.9 M) NORTHWEST OF A TRASH CAN EMPLACEMENT.  THE LOGO CAP IS FLUSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2406 ***********************************************************************
 HU2406  DESIGNATION -  F 188
 HU2406  PID         -  HU2406
 HU2406  STATE/COUNTY-  MD/WICOMICO
 HU2406  COUNTRY     -  US
 HU2406  USGS QUAD   -  DELMAR (2016)
 HU2406
 HU2406                         *CURRENT SURVEY CONTROL
 HU2406  ______________________________________________________________________
 HU2406* NAD 83(1986) POSITION- 38 25 01.     (N) 075 32 35.     (W)   SCALED
 HU2406* NAVD 88 ORTHO HEIGHT -    14.566 (meters)       47.79  (feet) ADJUSTED
 HU2406  ______________________________________________________________________
 HU2406  GEOID HEIGHT    -        -35.788 (meters)                     GEOID18
 HU2406  DYNAMIC HEIGHT  -         14.557 (meters)       47.76  (feet) COMP
 HU2406  MODELED GRAVITY -    980,009.9   (mgal)                       NAVD 88
 HU2406
 HU2406  VERT ORDER      -  SECOND    CLASS I
 HU2406
 HU2406.The horizontal coordinates were scaled from a map and have
 HU2406.an estimated accuracy of +/- 6 seconds.
 HU2406
 HU2406.The orthometric height was determined by differential leveling and
 HU2406.adjusted by the NATIONAL GEODETIC SURVEY
 HU2406.in June 1991.
 HU2406
 HU2406.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2406.GEOID18 height accuracy estimate available here.
 HU2406
 HU2406.Click photographs - Photos may exist for this station.
 HU2406
 HU2406.The dynamic height is computed by dividing the NAVD 88
 HU2406.geopotential number by the normal gravity value computed on the
 HU2406.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2406.degrees latitude (g = 980.6199 gals.).
 HU2406
 HU2406.The modeled gravity was interpolated from observed gravity values.
 HU2406
 HU2406;                    North         East    Units  Estimated Accuracy
 HU2406;SPC MD       -    84,300.      527,230.      MT  (+/- 180 meters Scaled)
 HU2406
 HU2406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH525522(NAD 83)
 HU2406
 HU2406                          SUPERSEDED SURVEY CONTROL
 HU2406
 HU2406  NGVD 29 (06/12/91)   14.820  (m)           48.62   (f) ADJUSTED    2 1
 HU2406
 HU2406.Superseded values are not recommended for survey control.
 HU2406
 HU2406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2406.See file dsdata.pdf to determine how the superseded data were derived.
 HU2406
 HU2406_MARKER: I = METAL ROD
 HU2406_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2406_STAMPING: F 188 1990
 HU2406_MARK LOGO: NGS
 HU2406_PROJECTION: RECESSED 3 CENTIMETERS
 HU2406_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2406_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2406_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2406+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2406_ROD/PIPE-DEPTH: 20.6 meters
 HU2406_SLEEVE-DEPTH  : 0.9 meters
 HU2406
 HU2406  HISTORY     - Date     Condition        Report By
 HU2406  HISTORY     - 1990     MONUMENTED       NGS
 HU2406
 HU2406                          STATION DESCRIPTION
 HU2406
 HU2406'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2406'2.8 KM (1.74 MI) EASTERLY ALONG ZION ROAD FROM THE JUNCTION OF U.S.
 HU2406'HIGHWAY 13 BUSINESS IN SALISBURY, THENCE 2.1 KM (1.30 MI) NORTHERLY
 HU2406'ALONG BROWN ROAD, 30.3 M (99.41 FT) NORTHWEST OF THE NORTHWEST CORNER
 HU2406'OF A HOUSE, 18.1 M (59.38 FT) NORTH OF THE CENTER OF A DRIVEWAY, 14.2
 HU2406'M (46.59 FT) NORTH-NORTHWEST OF UTILITY PEDESTAL NUMBER 3 E, 7.4 M
 HU2406'(24.28 FT) EAST OF AND LEVEL WITH THE CENTERLINE OF THE ROAD, 3.3 M
 HU2406'(10.83 FT) NORTH OF A FENCE CORNER, AND 0.3 M (0.98 FT) WEST OF A
 HU2406'WITNESS POST AND FENCE.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2406'5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2550 ***********************************************************************
 HU2550  DESIGNATION -  F 189
 HU2550  PID         -  HU2550
 HU2550  STATE/COUNTY-  MD/WICOMICO
 HU2550  COUNTRY     -  US
 HU2550  USGS QUAD   -  PITTSVILLE (2016)
 HU2550
 HU2550                         *CURRENT SURVEY CONTROL
 HU2550  ______________________________________________________________________
 HU2550* NAD 83(1986) POSITION- 38 25 51.     (N) 075 26 55.     (W)   SCALED
 HU2550* NAVD 88 ORTHO HEIGHT -    20.155 (meters)       66.13  (feet) ADJUSTED
 HU2550  ______________________________________________________________________
 HU2550  GEOID HEIGHT    -        -35.824 (meters)                     GEOID18
 HU2550  DYNAMIC HEIGHT  -         20.142 (meters)       66.08  (feet) COMP
 HU2550  MODELED GRAVITY -    980,010.7   (mgal)                       NAVD 88
 HU2550
 HU2550  VERT ORDER      -  SECOND    CLASS I
 HU2550
 HU2550.The horizontal coordinates were scaled from a map and have
 HU2550.an estimated accuracy of +/- 6 seconds.
 HU2550
 HU2550.The orthometric height was determined by differential leveling and
 HU2550.adjusted by the NATIONAL GEODETIC SURVEY
 HU2550.in June 1991.
 HU2550
 HU2550.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2550.GEOID18 height accuracy estimate available here.
 HU2550
 HU2550.Click photographs - Photos may exist for this station.
 HU2550
 HU2550.The dynamic height is computed by dividing the NAVD 88
 HU2550.geopotential number by the normal gravity value computed on the
 HU2550.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2550.degrees latitude (g = 980.6199 gals.).
 HU2550
 HU2550.The modeled gravity was interpolated from observed gravity values.
 HU2550
 HU2550;                    North         East    Units  Estimated Accuracy
 HU2550;SPC MD       -    85,980.      535,450.      MT  (+/- 180 meters Scaled)
 HU2550
 HU2550_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH608537(NAD 83)
 HU2550
 HU2550                          SUPERSEDED SURVEY CONTROL
 HU2550
 HU2550  NGVD 29 (06/12/91)   20.402  (m)           66.94   (f) ADJUSTED    2 1
 HU2550
 HU2550.Superseded values are not recommended for survey control.
 HU2550
 HU2550.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2550.See file dsdata.pdf to determine how the superseded data were derived.
 HU2550
 HU2550_MARKER: I = METAL ROD
 HU2550_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2550_STAMPING: F 189 1990
 HU2550_MARK LOGO: NGS
 HU2550_PROJECTION: RECESSED 2 CENTIMETERS
 HU2550_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2550_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2550_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2550+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2550_ROD/PIPE-DEPTH: 9.7 meters
 HU2550_SLEEVE-DEPTH  : 0.9 meters
 HU2550
 HU2550  HISTORY     - Date     Condition        Report By
 HU2550  HISTORY     - 1990     MONUMENTED       NGS
 HU2550
 HU2550                          STATION DESCRIPTION
 HU2550
 HU2550'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2550'4.6 KM (2.86 MI) NORTHWESTERLY ALONG PITTSVILLE ROAD FROM THE JUNCTION
 HU2550'OF STATE HIGHWAY 353 (PITTSVILLE DELAWARE ROAD) IN PITTSVILLE, 24.0 M
 HU2550'(78.74 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF A HOUSE, 6.0 M
 HU2550'(19.68 FT) SOUTHEAST OF THE CENTER OF A DRIVEWAY, 5.3 M (17.39 FT)
 HU2550'EAST OF AND LEVEL WITH THE ROAD CENTER, AND 0.9 M (2.95 FT) SOUTHEAST
 HU2550'OF A WITNESS POST AND UTILITY PEDESTAL NUMBER 48 A.  NOTE--ACCESS TO
 HU2550'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2550'PROPERTY OWNED BY CARROLL PARSONS, P.O. BOX 22, PITTSVILLE, MD 21850,
 HU2550'TELEPHONE NUMBER (301) 896-9130.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0305 ***********************************************************************
 JW0305  DESIGNATION -  F 19
 JW0305  PID         -  JW0305
 JW0305  STATE/COUNTY-  MD/ALLEGANY
 JW0305  COUNTRY     -  US
 JW0305  USGS QUAD   -  KEYSER (2016)
 JW0305
 JW0305                         *CURRENT SURVEY CONTROL
 JW0305  ______________________________________________________________________
 JW0305* NAD 83(1986) POSITION- 39 27 02.     (N) 078 57 36.     (W)   SCALED
 JW0305* NAVD 88 ORTHO HEIGHT -   241.984 (meters)      793.91  (feet) ADJUSTED
 JW0305  ______________________________________________________________________
 JW0305  GEOID HEIGHT    -        -32.326 (meters)                     GEOID18
 JW0305  DYNAMIC HEIGHT  -        241.835 (meters)      793.42  (feet) COMP
 JW0305  MODELED GRAVITY -    980,006.6   (mgal)                       NAVD 88
 JW0305
 JW0305  VERT ORDER      -  FIRST     CLASS II
 JW0305
 JW0305.The horizontal coordinates were scaled from a map and have
 JW0305.an estimated accuracy of +/- 6 seconds.
 JW0305
 JW0305.The orthometric height was determined by differential leveling and
 JW0305.adjusted by the NATIONAL GEODETIC SURVEY
 JW0305.in June 1991.
 JW0305
 JW0305.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0305.GEOID18 height accuracy estimate available here.
 JW0305
 JW0305.Click photographs - Photos may exist for this station.
 JW0305
 JW0305.The dynamic height is computed by dividing the NAVD 88
 JW0305.geopotential number by the normal gravity value computed on the
 JW0305.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0305.degrees latitude (g = 980.6199 gals.).
 JW0305
 JW0305.The modeled gravity was interpolated from observed gravity values.
 JW0305
 JW0305;                    North         East    Units  Estimated Accuracy
 JW0305;SPC MD       -   199,840.      231,310.      MT  (+/- 180 meters Scaled)
 JW0305
 JW0305_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD755687(NAD 83)
 JW0305
 JW0305                          SUPERSEDED SURVEY CONTROL
 JW0305
 JW0305  NGVD 29 (??/??/92)  242.158  (m)          794.48   (f) ADJ UNCH    1 2
 JW0305
 JW0305.Superseded values are not recommended for survey control.
 JW0305
 JW0305.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0305.See file dsdata.pdf to determine how the superseded data were derived.
 JW0305
 JW0305_MARKER: DB = BENCH MARK DISK
 JW0305_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JW0305_STAMPING: F 19 1934
 JW0305_MARK LOGO: CGS
 JW0305_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0305
 JW0305  HISTORY     - Date     Condition        Report By
 JW0305  HISTORY     - 1934     MONUMENTED       CGS
 JW0305  HISTORY     - 1935     GOOD             CGS
 JW0305  HISTORY     - 1983     GOOD             NGS
 JW0305
 JW0305                          STATION DESCRIPTION
 JW0305
 JW0305'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JW0305'2 MI E FROM KEYSER.
 JW0305'IN ALLEGANY COUNTY, MARYLAND, 2.0 MILES EAST ALONG THE BALTIMORE
 JW0305'AND OHIO RAILROAD FROM THE STATION AT KEYSER, MINERAL COUNTY,
 JW0305'WEST VIRGINIA, 6 YARDS EAST OF A MARYLAND-WEST VIRGINIA STATE-LINE
 JW0305'POST, AT A BRIDGE OVER POTOMAC RIVER, IN THE TOP OF THE SOUTHEAST
 JW0305'ABUTMENT, 3 YARDS EAST OF THE CENTER LINE OF THE EAST-BOUND TRACK,
 JW0305'AND ABOUT 1 FOOT LOWER THAN THE TRACK.  A STANDARD DISK,
 JW0305'STAMPED F 19 1934.
 JW0305
 JW0305                          STATION RECOVERY (1935)
 JW0305
 JW0305'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JW0305'RECOVERED IN GOOD CONDITION.
 JW0305
 JW0305                          STATION RECOVERY (1983)
 JW0305
 JW0305'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0305'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8785 ***********************************************************************
 HV8785  DESIGNATION -  F 190
 HV8785  PID         -  HV8785
 HV8785  STATE/COUNTY-  MD/CHARLES
 HV8785  COUNTRY     -  US
 HV8785  USGS QUAD   -  PORT TOBACCO (2016)
 HV8785
 HV8785                         *CURRENT SURVEY CONTROL
 HV8785  ______________________________________________________________________
 HV8785* NAD 83(1986) POSITION- 38 31 05.     (N) 077 00 56.     (W)   SCALED
 HV8785* NAVD 88 ORTHO HEIGHT -     9.853 (meters)       32.33  (feet) ADJUSTED
 HV8785  ______________________________________________________________________
 HV8785  GEOID HEIGHT    -        -32.961 (meters)                     GEOID18
 HV8785  DYNAMIC HEIGHT  -          9.847 (meters)       32.31  (feet) COMP
 HV8785  MODELED GRAVITY -    980,032.2   (mgal)                       NAVD 88
 HV8785
 HV8785  VERT ORDER      -  FIRST     CLASS II
 HV8785
 HV8785.The horizontal coordinates were scaled from a map and have
 HV8785.an estimated accuracy of +/- 6 seconds.
 HV8785
 HV8785.The orthometric height was determined by differential leveling and
 HV8785.adjusted by the NATIONAL GEODETIC SURVEY
 HV8785.in June 1991.
 HV8785
 HV8785.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8785.GEOID18 height accuracy estimate available here.
 HV8785
 HV8785.Click photographs - Photos may exist for this station.
 HV8785
 HV8785.The dynamic height is computed by dividing the NAVD 88
 HV8785.geopotential number by the normal gravity value computed on the
 HV8785.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8785.degrees latitude (g = 980.6199 gals.).
 HV8785
 HV8785.The modeled gravity was interpolated from observed gravity values.
 HV8785
 HV8785;                    North         East    Units  Estimated Accuracy
 HV8785;SPC MD       -    94,510.      398,640.      MT  (+/- 180 meters Scaled)
 HV8785
 HV8785_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH242652(NAD 83)
 HV8785
 HV8785                          SUPERSEDED SURVEY CONTROL
 HV8785
 HV8785.No superseded survey control is available for this station.
 HV8785
 HV8785_MARKER: I = METAL ROD
 HV8785_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8785_STAMPING: F 190 1990
 HV8785_MARK LOGO: NGS
 HV8785_PROJECTION: RECESSED 2 CENTIMETERS
 HV8785_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8785_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8785_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8785+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8785_ROD/PIPE-DEPTH: 6.9 meters
 HV8785
 HV8785  HISTORY     - Date     Condition        Report By
 HV8785  HISTORY     - 1990     MONUMENTED       NGS
 HV8785
 HV8785                          STATION DESCRIPTION
 HV8785
 HV8785'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8785'3.4 KM (2.11 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 6 FROM THE
 HV8785'JUNCTION OF U.S. HIGHWAY 301 IN LA PLATA, 40.2 M (131.89 FT)
 HV8785'SOUTHWEST OF A UTILITY POLE, 14.8 M (48.56 FT) SOUTHEAST OF THE
 HV8785'CENTERLINE OF THE HIGHWAY, 7.5 M (24.61 FT) NORTHEAST OF THE CENTER
 HV8785'OF A DRIVEWAY, 4.0 M (13.12 FT) NORTHEAST OF A FENCE CORNER, 0.9 M
 HV8785'(2.95 FT) ABOVE THE LEVEL OF THE HIGHWAY, AND 0.3 M (0.98 FT)
 HV8785'NORTHWEST OF A WITNESS POST AND FENCE.  NOTE--ACCESS TO THE DATUM
 HV8785'POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8789 ***********************************************************************
 HV8789  DESIGNATION -  F 191
 HV8789  PID         -  HV8789
 HV8789  STATE/COUNTY-  MD/CHARLES
 HV8789  COUNTRY     -  US
 HV8789  USGS QUAD   -  MATHIAS POINT (2019)
 HV8789
 HV8789                         *CURRENT SURVEY CONTROL
 HV8789  ______________________________________________________________________
 HV8789* NAD 83(1986) POSITION- 38 28 50.     (N) 077 05 22.     (W)   SCALED
 HV8789* NAVD 88 ORTHO HEIGHT -    19.203 (meters)       63.00  (feet) ADJUSTED
 HV8789  ______________________________________________________________________
 HV8789  GEOID HEIGHT    -        -32.878 (meters)                     GEOID18
 HV8789  DYNAMIC HEIGHT  -         19.192 (meters)       62.97  (feet) COMP
 HV8789  MODELED GRAVITY -    980,040.7   (mgal)                       NAVD 88
 HV8789
 HV8789  VERT ORDER      -  FIRST     CLASS II
 HV8789
 HV8789.The horizontal coordinates were scaled from a map and have
 HV8789.an estimated accuracy of +/- 6 seconds.
 HV8789
 HV8789.The orthometric height was determined by differential leveling and
 HV8789.adjusted by the NATIONAL GEODETIC SURVEY
 HV8789.in June 1991.
 HV8789
 HV8789.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8789.GEOID18 height accuracy estimate available here.
 HV8789
 HV8789.Click photographs - Photos may exist for this station.
 HV8789
 HV8789.The dynamic height is computed by dividing the NAVD 88
 HV8789.geopotential number by the normal gravity value computed on the
 HV8789.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8789.degrees latitude (g = 980.6199 gals.).
 HV8789
 HV8789.The modeled gravity was interpolated from observed gravity values.
 HV8789
 HV8789;                    North         East    Units  Estimated Accuracy
 HV8789;SPC MD       -    90,350.      392,200.      MT  (+/- 180 meters Scaled)
 HV8789
 HV8789_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH177612(NAD 83)
 HV8789
 HV8789                          SUPERSEDED SURVEY CONTROL
 HV8789
 HV8789.No superseded survey control is available for this station.
 HV8789
 HV8789_MARKER: I = METAL ROD
 HV8789_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8789_STAMPING: F 191 1990
 HV8789_MARK LOGO: NGS
 HV8789_PROJECTION: FLUSH
 HV8789_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8789_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8789_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8789+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8789_ROD/PIPE-DEPTH: 13.3 meters
 HV8789
 HV8789  HISTORY     - Date     Condition        Report By
 HV8789  HISTORY     - 1990     MONUMENTED       NGS
 HV8789
 HV8789                          STATION DESCRIPTION
 HV8789
 HV8789'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8789'11.5 KM (7.15 MI) WESTERLY ALONG STATE HIGHWAY 6 FROM THE JUNCTION OF
 HV8789'U.S. HIGHWAY 301 IN LA PLATA, 13.5 M (44.29 FT) EAST OF THE CENTER
 HV8789'OF A DRIVEWAY, 11.1 M (36.42 FT) SOUTH OF THE CENTERLINE OF THE
 HV8789'HIGHWAY, 7.4 M (24.28 FT) NORTHWEST OF A FENCE CORNER, 1.5 M (4.92
 HV8789'FT) WEST OF UTILITY POLE NUMBER 19, 0.3 M (0.98 FT) NORTH OF A
 HV8789'WITNESS POST, AND 0.3 M (0.98 FT) BELOW THE LEVEL OF THE HIGHWAY.
 HV8789'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8860 ***********************************************************************
 HV8860  DESIGNATION -  F 192
 HV8860  PID         -  HV8860
 HV8860  STATE/COUNTY-  MD/ST MARYS
 HV8860  COUNTRY     -  US
 HV8860  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV8860
 HV8860                         *CURRENT SURVEY CONTROL
 HV8860  ______________________________________________________________________
 HV8860* NAD 83(1986) POSITION- 38 13 23.     (N) 076 27 23.     (W)   SCALED
 HV8860* NAVD 88 ORTHO HEIGHT -     3.412 (meters)       11.19  (feet) ADJUSTED
 HV8860  ______________________________________________________________________
 HV8860  GEOID HEIGHT    -        -34.596 (meters)                     GEOID18
 HV8860  DYNAMIC HEIGHT  -          3.410 (meters)       11.19  (feet) COMP
 HV8860  MODELED GRAVITY -    980,004.5   (mgal)                       NAVD 88
 HV8860
 HV8860  VERT ORDER      -  SECOND    CLASS I
 HV8860
 HV8860.The horizontal coordinates were scaled from a map and have
 HV8860.an estimated accuracy of +/- 6 seconds.
 HV8860
 HV8860.The orthometric height was determined by differential leveling and
 HV8860.adjusted by the NATIONAL GEODETIC SURVEY
 HV8860.in June 1991.
 HV8860
 HV8860.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8860.GEOID18 height accuracy estimate available here.
 HV8860
 HV8860.Click photographs - Photos may exist for this station.
 HV8860
 HV8860.The dynamic height is computed by dividing the NAVD 88
 HV8860.geopotential number by the normal gravity value computed on the
 HV8860.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8860.degrees latitude (g = 980.6199 gals.).
 HV8860
 HV8860.The modeled gravity was interpolated from observed gravity values.
 HV8860
 HV8860;                    North         East    Units  Estimated Accuracy
 HV8860;SPC MD       -    61,900.      447,600.      MT  (+/- 180 meters Scaled)
 HV8860
 HV8860_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH725315(NAD 83)
 HV8860
 HV8860                          SUPERSEDED SURVEY CONTROL
 HV8860
 HV8860.No superseded survey control is available for this station.
 HV8860
 HV8860_MARKER: DV = VERTICAL CONTROL DISK
 HV8860_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV8860_SP_SET: ABUTMENT
 HV8860_STAMPING: F 192 1990
 HV8860_MARK LOGO: NGS
 HV8860_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8860_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8860_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8860+SATELLITE: SATELLITE OBSERVATIONS - February 23, 2009
 HV8860
 HV8860  HISTORY     - Date     Condition        Report By
 HV8860  HISTORY     - 1990     MONUMENTED       NGS
 HV8860  HISTORY     - 19990214 GOOD             USPSQD
 HV8860  HISTORY     - 20020329 GOOD             MDSHA
 HV8860  HISTORY     - 20050416 GOOD             USPSQD
 HV8860  HISTORY     - 20090223 GOOD             MDSHA
 HV8860
 HV8860                          STATION DESCRIPTION
 HV8860
 HV8860'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8860'3.9 KM (2.4 MI) ALONG STATE HIGHWAY 5 FROM THE JUNCTION OF STATE
 HV8860'HIGHWAY 246 IN GREAT MILLS, 0.1 KM (0.1 MI) EAST OF THE INTERSECTION
 HV8860'OF WILLOWS ROAD, IN TOP OF AND 1.2 M (3.9 FT) NORTH OF THE SOUTH END
 HV8860'OF THE EAST CONCRETE ABUTMENT OF A HIGHWAY BRIDGE SPANNING EASTERN
 HV8860'BRANCH CREEK, 5.2 M (17.1 FT) SOUTH OF AND LEVEL WITH THE HIGHWAY
 HV8860'CENTERLINE.
 HV8860
 HV8860                          STATION RECOVERY (1999)
 HV8860
 HV8860'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV8860'RECOVERED IN GOOD CONDITION.
 HV8860
 HV8860                          STATION RECOVERY (2002)
 HV8860
 HV8860'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV8860'RECOVERED AS DESCRIBED.
 HV8860
 HV8860                          STATION RECOVERY (2005)
 HV8860
 HV8860'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPF)
 HV8860'HV8860
 HV8860'
 HV8860'THE DESCRIPTION HAS BEEN MODIFIED TO REFLECT ADDITIONAL REFERENCED
 HV8860'POINTS AND DISTANCES
 HV8860'
 HV8860'THE STATION IS LOCATED ALONG STATE HIGHWAY 5, 2.4 MI (3.9 KM)
 HV8860'SOUTHEASTERLY OF THE INTERSECTION OF STATE HIGHWAYS 5 AND 246 (GREAT
 HV8860'MILLS ROAD).
 HV8860'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 246 AND 5
 HV8860'(LEONARDTOWN POINT LOOKOUT ROAD) AT GREAT MILLS, MD., GO SOUTHEAST ON
 HV8860'STATE HIGHWAY 5 FOR 2.4 MI (3.9 KM) TO STATION ON THE RIGHT.
 HV8860'STATION IS 0.1 MI (0.2 KM) SOUTHEASTERLY OF WILLOWS ROAD AND 100 FT
 HV8860'(30.3 M) NORTHWESTERLY OF MARSHFIELD LANE.  STATION IS IN TOP OF AND
 HV8860'3.9 FT (1.2 M) NORTH OF THE SOUTH END OF THE EAST CONCRETE ABUTMENT OF
 HV8860'A HIGHWAY BRIDGE SPANNING EASTERN BRANCH CREEK, 17.1 FT (5.2 M) SOUTH
 HV8860'OF AND LEVEL WITH HIGHWAY 5 CENTERLINE.
 HV8860'
 HV8860
 HV8860                          STATION RECOVERY (2009)
 HV8860
 HV8860'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 HV8860'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6668 ***********************************************************************
 JV6668  FBN         -  This is a Federal Base Network Control Station.
 JV6668  DESIGNATION -  F 194
 JV6668  PID         -  JV6668
 JV6668  STATE/COUNTY-  MD/WASHINGTON
 JV6668  COUNTRY     -  US
 JV6668  USGS QUAD   -  CLEAR SPRING (2016)
 JV6668
 JV6668                         *CURRENT SURVEY CONTROL
 JV6668  ______________________________________________________________________
 JV6668* NAD 83(2011) POSITION- 39 39 34.50535(N) 077 54 33.19142(W)   ADJUSTED
 JV6668* NAD 83(2011) ELLIP HT-   128.355 (meters)        (06/27/12)   ADJUSTED
 JV6668* NAD 83(2011) EPOCH   -  2010.00
 JV6668* NAVD 88 ORTHO HEIGHT -   162.663 (meters)      533.67  (feet) ADJUSTED
 JV6668  ______________________________________________________________________
 JV6668  GEOID HEIGHT    -        -34.302 (meters)                     GEOID18
 JV6668  NAD 83(2011) X  -  1,029,924.069 (meters)                     COMP
 JV6668  NAD 83(2011) Y  - -4,807,941.173 (meters)                     COMP
 JV6668  NAD 83(2011) Z  -  4,049,041.490 (meters)                     COMP
 JV6668  LAPLACE CORR    -         -1.36  (seconds)                    DEFLEC18
 JV6668  DYNAMIC HEIGHT  -        162.568 (meters)      533.36  (feet) COMP
 JV6668  MODELED GRAVITY -    980,039.6   (mgal)                       NAVD 88
 JV6668
 JV6668  VERT ORDER      -  SECOND    CLASS I
 JV6668
 JV6668  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6668  Standards:
 JV6668         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6668            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6668  -------------------------------------------------------------------
 JV6668  NETWORK    1.03   1.90           0.45   0.39   0.97     -0.02487385
 JV6668  -------------------------------------------------------------------
 JV6668  Click here for local accuracies and other accuracy information.
 JV6668
 JV6668.The horizontal coordinates were established by GPS observations
 JV6668.and adjusted by the National Geodetic Survey in June 2012.
 JV6668
 JV6668.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6668.been affixed to the stable North American tectonic plate. See 
 JV6668.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6668
 JV6668.The horizontal coordinates are valid at the epoch date displayed above
 JV6668.which is a decimal equivalence of Year/Month/Day.
 JV6668
 JV6668.The orthometric height was determined by differential leveling and
 JV6668.adjusted by the NATIONAL GEODETIC SURVEY
 JV6668.in August 1994.
 JV6668
 JV6668.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6668.GEOID18 height accuracy estimate available here.
 JV6668
 JV6668.Click photographs - Photos may exist for this station.
 JV6668
 JV6668.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6668
 JV6668.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6668
 JV6668.The ellipsoidal height was determined by GPS observations
 JV6668.and is referenced to NAD 83.
 JV6668
 JV6668.The dynamic height is computed by dividing the NAVD 88
 JV6668.geopotential number by the normal gravity value computed on the
 JV6668.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6668.degrees latitude (g = 980.6199 gals.).
 JV6668
 JV6668.The modeled gravity was interpolated from observed gravity values.
 JV6668
 JV6668. The following values were computed from the NAD 83(2011) position.
 JV6668
 JV6668;                    North         East     Units Scale Factor Converg.
 JV6668;SPC MD       -   221,622.096   321,971.944   MT  1.00004339   -0 34 14.4
 JV6668;SPC MD       -   727,105.16  1,056,336.29   sFT  1.00004339   -0 34 14.4
 JV6668;UTM  18      - 4,394,021.438   250,421.036   MT  1.00036696   -1 51 27.7
 JV6668
 JV6668!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6668!SPC MD       -   0.99997986  x   1.00004339  =   1.00002325
 JV6668!UTM  18      -   0.99997986  x   1.00036696  =   1.00034682
 JV6668
 JV6668_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5042194021(NAD 83)
 JV6668
 JV6668                          SUPERSEDED SURVEY CONTROL
 JV6668
 JV6668  NAD 83(2007)-  39 39 34.50555(N)    077 54 33.19216(W) AD(2002.00) 0
 JV6668  ELLIP H (02/10/07)  128.379  (m)                       GP(2002.00)    
 JV6668  NAD 83(1991)-  39 39 34.50561(N)    077 54 33.19236(W) AD(       ) A
 JV6668  ELLIP H (02/12/02)  128.381  (m)                       GP(       ) 4 1
 JV6668  NAVD 88             162.66   (m)          533.7    (f) LEVELING    3  
 JV6668
 JV6668.Superseded values are not recommended for survey control.
 JV6668
 JV6668.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6668.See file dsdata.pdf to determine how the superseded data were derived.
 JV6668
 JV6668_MARKER: DV = VERTICAL CONTROL DISK
 JV6668_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6668_STAMPING: F 194 1990
 JV6668_MARK LOGO: NGS
 JV6668_PROJECTION: FLUSH
 JV6668_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6668_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6668+STABILITY: SURFACE MOTION
 JV6668_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6668+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2015
 JV6668
 JV6668  HISTORY     - Date     Condition        Report By
 JV6668  HISTORY     - 1990     MONUMENTED       NGS
 JV6668  HISTORY     - 20000327 GOOD             MDSHA
 JV6668  HISTORY     - 20040326 GOOD             DEWDAV
 JV6668  HISTORY     - 20050330 GOOD             DEWDAV
 JV6668  HISTORY     - 20070607 GOOD             NAGEL
 JV6668  HISTORY     - 20080427 GOOD             GEOCAC
 JV6668  HISTORY     - 20150330 GOOD             ARCSHE
 JV6668
 JV6668                          STATION DESCRIPTION
 JV6668
 JV6668'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JV6668'LOCATED ABOUT 1.6 KM (1.0 MI) EAST OF CLEAR SPRINGS, ALONG THE SOUTH
 JV6668'SIDE OF U.S. HIGHWAY 40 AND ON ROAD RIGHT-OF-WAY.
 JV6668'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND STATE HIGHWAY 68
 JV6668'AT CLEAR SPRINGS, GO EAST ON U.S. HIGHWAY 40 FOR 1.6 KM (1.0 MI) TO
 JV6668'THE MARKER ON THE RIGHT, SOUTH SIDE OF THE ROAD.
 JV6668'THE DISK IS SET IN THE TOP OF A 0.3 M (1.0 FT) ROUND CONCRETE POST
 JV6668'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 9.3 M
 JV6668'(30.5 FT) SOUTH OF THE CENTER OF U.S. HIGHWAY 40, 3.7 M (12.1 FT)
 JV6668'NORTHEAST OF A POWERLINE POLE NUMBERED 377 AND 0.6 M (2.0 FT) NORTH OF
 JV6668'A CARSONITE WITNESS POST.
 JV6668
 JV6668                          STATION RECOVERY (2000)
 JV6668
 JV6668'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6668'RECOVERED AS DESCRIBED.
 JV6668
 JV6668                          STATION RECOVERY (2004)
 JV6668
 JV6668'RECOVERY NOTE BY DEWBERRY DAVIS 2004 (KEC)
 JV6668'RECOVERED IN GOOD CONDITION.
 JV6668
 JV6668                          STATION RECOVERY (2005)
 JV6668
 JV6668'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (KEC)
 JV6668'RECOVERED IN GOOD CONDITION.
 JV6668
 JV6668                          STATION RECOVERY (2007)
 JV6668
 JV6668'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2007 (REN)
 JV6668'RECOVERED IN GOOD CONDITION.
 JV6668
 JV6668                          STATION RECOVERY (2008)
 JV6668
 JV6668'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JV6668'RECOVERED IN GOOD CONDITION.
 JV6668
 JV6668                          STATION RECOVERY (2015)
 JV6668
 JV6668'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 JV6668'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8923 ***********************************************************************
 HV8923  DESIGNATION -  F 195
 HV8923  PID         -  HV8923
 HV8923  STATE/COUNTY-  MD/DORCHESTER
 HV8923  COUNTRY     -  US
 HV8923  USGS QUAD   -  GOLDEN HILL (2016)
 HV8923
 HV8923                         *CURRENT SURVEY CONTROL
 HV8923  ______________________________________________________________________
 HV8923* NAD 83(1986) POSITION- 38 28 59.7    (N) 076 08 34.1    (W)   HD_HELD2
 HV8923* NAVD 88 ORTHO HEIGHT -     3.458 (meters)       11.35  (feet) ADJUSTED
 HV8923  ______________________________________________________________________
 HV8923  GEOID HEIGHT    -        -35.057 (meters)                     GEOID18
 HV8923  DYNAMIC HEIGHT  -          3.455 (meters)       11.34  (feet) COMP
 HV8923  MODELED GRAVITY -    980,011.4   (mgal)                       NAVD 88
 HV8923
 HV8923  VERT ORDER      -  SECOND    CLASS I
 HV8923
 HV8923.The horizontal coordinates were established by autonomous hand held GPS
 HV8923.observations and have an estimated accuracy of +/- 10 meters.
 HV8923
 HV8923.The orthometric height was determined by differential leveling and
 HV8923.adjusted by the NATIONAL GEODETIC SURVEY
 HV8923.in August 1994.
 HV8923
 HV8923.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8923.GEOID18 height accuracy estimate available here.
 HV8923
 HV8923.Click photographs - Photos may exist for this station.
 HV8923
 HV8923.The dynamic height is computed by dividing the NAVD 88
 HV8923.geopotential number by the normal gravity value computed on the
 HV8923.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8923.degrees latitude (g = 980.6199 gals.).
 HV8923
 HV8923.The modeled gravity was interpolated from observed gravity values.
 HV8923
 HV8923;                    North         East    Units  Estimated Accuracy
 HV8923;SPC MD       -    90,995.      474,790.      MT  (+/- 10 meters HH2 GPS)
 HV8923
 HV8923_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0032560053(NAD 83)
 HV8923
 HV8923                          SUPERSEDED SURVEY CONTROL
 HV8923
 HV8923.No superseded survey control is available for this station.
 HV8923
 HV8923_MARKER: DV = VERTICAL CONTROL DISK
 HV8923_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV8923_SP_SET: BRIDGE
 HV8923_STAMPING: F 195 1990
 HV8923_MARK LOGO: NGS
 HV8923_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV8923_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8923_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8923+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2014
 HV8923
 HV8923  HISTORY     - Date     Condition        Report By
 HV8923  HISTORY     - 1990     MONUMENTED       MDSHA
 HV8923  HISTORY     - 20040416 GOOD             GEOCAC
 HV8923  HISTORY     - 20051231 GOOD             USPSQD
 HV8923  HISTORY     - 20070130 GOOD             USPSQD
 HV8923  HISTORY     - 20140208 GOOD             ARCSHE
 HV8923
 HV8923                          STATION DESCRIPTION
 HV8923
 HV8923'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HV8923'2.45 KM (1.52 MI) SOUTHEAST ALONG STATE HIGHWAY 335 FROM THE JUNCTION
 HV8923'OF STATE HIGHWAY 16 AT CHURCH CREEK, IN THE BRIDGE OVER BUTTONS
 HV8923'CREEK, 20.5 FT (6.2 M) EAST OF CENTERLINE OF STATE HIGHWAY 335, 0.4
 HV8923'FT (0.1 M) SOUTH OF THE NORTHEAST CORNER OF THE BRIDGE, 18.3 FT
 HV8923'(5.6 M) NORTH OF A WOODEN BULKHEAD, 15.0 FT (4.6 M) WEST OF A WOODEN
 HV8923'BULKHEAD, SET IN A DRILL HOLE IN A CONCRETE BARRIER WALL, AND 3.4 FT
 HV8923'(1.0 M) HIGHER THAN STATE HIGHWAY 335.
 HV8923
 HV8923                          STATION RECOVERY (2004)
 HV8923
 HV8923'RECOVERY NOTE BY GEOCACHING 2004 (MHB)
 HV8923'RECOVERED IN GOOD CONDITION.
 HV8923
 HV8923                          STATION RECOVERY (2005)
 HV8923
 HV8923'RECOVERY NOTE BY US POWER SQUADRON 2005 (NNH)
 HV8923'MARK IS 1 FOOT SOUTH OF THE 15.0 MILE MARKER.
 HV8923
 HV8923                          STATION RECOVERY (2007)
 HV8923
 HV8923'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HV8923'RECOVERED IN GOOD CONDITION.
 HV8923
 HV8923                          STATION RECOVERY (2014)
 HV8923
 HV8923'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV8923'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4394 ***********************************************************************
 JU4394  DESIGNATION -  F 196
 JU4394  PID         -  JU4394
 JU4394  STATE/COUNTY-  MD/QUEEN ANNES
 JU4394  COUNTRY     -  US
 JU4394  USGS QUAD   -  CHURCH HILL (2017)
 JU4394
 JU4394                         *CURRENT SURVEY CONTROL
 JU4394  ______________________________________________________________________
 JU4394* NAD 83(1986) POSITION- 39 13 15.8    (N) 075 52 43.0    (W)   HD_HELD2
 JU4394* NAVD 88 ORTHO HEIGHT -    19.889 (meters)       65.25  (feet) ADJUSTED
 JU4394  ______________________________________________________________________
 JU4394  GEOID HEIGHT    -        -33.656 (meters)                     GEOID18
 JU4394  DYNAMIC HEIGHT  -         19.879 (meters)       65.22  (feet) COMP
 JU4394  MODELED GRAVITY -    980,107.0   (mgal)                       NAVD 88
 JU4394
 JU4394  VERT ORDER      -  SECOND    CLASS I
 JU4394
 JU4394.The horizontal coordinates were established by autonomous hand held GPS
 JU4394.observations and have an estimated accuracy of +/- 10 meters.
 JU4394
 JU4394.The orthometric height was determined by differential leveling and
 JU4394.adjusted by the NATIONAL GEODETIC SURVEY
 JU4394.in July 1996.
 JU4394
 JU4394.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4394.GEOID18 height accuracy estimate available here.
 JU4394
 JU4394.Click photographs - Photos may exist for this station.
 JU4394
 JU4394.The dynamic height is computed by dividing the NAVD 88
 JU4394.geopotential number by the normal gravity value computed on the
 JU4394.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4394.degrees latitude (g = 980.6199 gals.).
 JU4394
 JU4394.The modeled gravity was interpolated from observed gravity values.
 JU4394
 JU4394;                    North         East    Units  Estimated Accuracy
 JU4394;SPC MD       -   173,141.      496,833.      MT  (+/- 10 meters HH2 GPS)
 JU4394
 JU4394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2415641675(NAD 83)
 JU4394
 JU4394                          SUPERSEDED SURVEY CONTROL
 JU4394
 JU4394.No superseded survey control is available for this station.
 JU4394
 JU4394_MARKER: DD = SURVEY DISK
 JU4394_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4394_STAMPING: F 196 1991
 JU4394_MARK LOGO: MDSHA
 JU4394_PROJECTION: RECESSED 10 CENTIMETERS
 JU4394_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4394_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4394+STABILITY: SURFACE MOTION
 JU4394_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU4394+SATELLITE: SATELLITE OBSERVATIONS - February 25, 2013
 JU4394
 JU4394  HISTORY     - Date     Condition        Report By
 JU4394  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4394  HISTORY     - 20020301 GOOD             USPSQD
 JU4394  HISTORY     - 20130225 GOOD             ARCSHE
 JU4394
 JU4394                          STATION DESCRIPTION
 JU4394
 JU4394'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4394'THE MARKER IS LOCATED ABOUT 2.75 MI (4.43 KM) EAST-SOUTHEAST OF
 JU4394'CRUMPTON, 2.75 MI (4.43 KM) NORTH-NORTHEAST OF DUDLEY CORNERS, 1.75 MI
 JU4394'(2.82 KM) SOUTH OF THE CHESTER RIVER AND ALONG THE SOUTHEAST SIDE OF
 JU4394'U.S. HIGHWAY 301.  IT IS ON ROAD RIGHT-OF-WAY.
 JU4394'
 JU4394'TO REACH FROM THE POST OFFICE IN CRUMPTON, GO SOUTH ON STATE HIGHWAY
 JU4394'290 FOR 3.25 MI (5.23 KM) TO U.S. HIGHWAY 301.  TURN LEFT AND GO
 JU4394'NORTHERLY ON U.S.  HIGHWAY 301 FOR 2.0 MI (3.2 KM) TO THE MARKER ON
 JU4394'THE RIGHT.
 JU4394'
 JU4394'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JU4394'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS
 JU4394'RECESSED ABOUT 0.15 FT (0.05 M) BELOW THE SURFACE OF THE GROUND.  IT
 JU4394'IS 50 FT (15.2 M) SOUTHEAST OF THE CENTER OF THE NORTHBOUND LANE OF
 JU4394'U.S.  HIGHWAY 301, 175.5 FT (53.5 M) NORTHEAST OF THE CENTER OF A 2.0
 JU4394'FT (0.6 M) CONCRETE PIPE WHICH RUNS UNDER U.S. HIGHWAY 301, 3.0 FT
 JU4394'(0.9 M) NORTHWEST OF THE EDGE OF A WOODED AREA, 2.5 FT (0.8 M)
 JU4394'NORTHWEST OF A CARSONITE WITNESS POST AND ABOUT 4.0 FT (1.2 M) BELOW
 JU4394'THE SURFACE OF THE HIGHWAY.
 JU4394
 JU4394                          STATION RECOVERY (2002)
 JU4394
 JU4394'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4394'RECOVERED IN GOOD CONDITION.
 JU4394
 JU4394                          STATION RECOVERY (2013)
 JU4394
 JU4394'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU4394'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6917 ***********************************************************************
 JV6917  DESIGNATION -  F 197
 JV6917  PID         -  JV6917
 JV6917  STATE/COUNTY-  MD/BALTIMORE
 JV6917  COUNTRY     -  US
 JV6917  USGS QUAD   -  BALTIMORE EAST (2016)
 JV6917
 JV6917                         *CURRENT SURVEY CONTROL
 JV6917  ______________________________________________________________________
 JV6917* NAD 83(1986) POSITION- 39 20 44.     (N) 076 30 25.     (W)   SCALED
 JV6917* NAVD 88 ORTHO HEIGHT -    39.994 (meters)      131.21  (feet) ADJUSTED
 JV6917  ______________________________________________________________________
 JV6917  GEOID HEIGHT    -        -32.875 (meters)                     GEOID18
 JV6917  DYNAMIC HEIGHT  -         39.973 (meters)      131.14  (feet) COMP
 JV6917  MODELED GRAVITY -    980,099.0   (mgal)                       NAVD 88
 JV6917
 JV6917  VERT ORDER      -  SECOND    CLASS I
 JV6917
 JV6917.The horizontal coordinates were scaled from a map and have
 JV6917.an estimated accuracy of +/- 6 seconds.
 JV6917
 JV6917.The orthometric height was determined by differential leveling and
 JV6917.adjusted by the NATIONAL GEODETIC SURVEY
 JV6917.in June 1995.
 JV6917
 JV6917.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6917.GEOID18 height accuracy estimate available here.
 JV6917
 JV6917.Click photographs - Photos may exist for this station.
 JV6917
 JV6917.The dynamic height is computed by dividing the NAVD 88
 JV6917.geopotential number by the normal gravity value computed on the
 JV6917.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6917.degrees latitude (g = 980.6199 gals.).
 JV6917
 JV6917.The modeled gravity was interpolated from observed gravity values.
 JV6917
 JV6917;                    North         East    Units  Estimated Accuracy
 JV6917;SPC MD       -   186,480.      442,500.      MT  (+/- 180 meters Scaled)
 JV6917
 JV6917_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ701562(NAD 83)
 JV6917
 JV6917                          SUPERSEDED SURVEY CONTROL
 JV6917
 JV6917.No superseded survey control is available for this station.
 JV6917
 JV6917_MARKER: DD = SURVEY DISK
 JV6917_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6917_SP_SET: WHEEL GUARD
 JV6917_STAMPING: F 197 1991
 JV6917_MARK LOGO: MDSHA
 JV6917_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6917_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6917
 JV6917  HISTORY     - Date     Condition        Report By
 JV6917  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6917  HISTORY     - 19950607 GOOD             MCCRON
 JV6917
 JV6917                          STATION DESCRIPTION
 JV6917
 JV6917'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6917'7 MILES (11.3 KM) NORTHEAST OF THE CENTER OF BALTIMORE, 1 MI (1.6 KM)
 JV6917'NORTHWEST OF GOLDEN RING AND IN THE KENTWOOD DISTRICT, TO REACH FROM
 JV6917'THE INTERSTATE HIGHWAY 95 NORTHBOUND TOLL PLAZA WHICH IS LOCATED ON
 JV6917'THE NORTHEAST SIDE OF THE FORT MCHENRY TUNNEL, GO NORTHEAST ON
 JV6917'INTERSTATE HIGHWAY 95 FOR 7.0 MI (11.3 KM) TO THE MARKER ON THE
 JV6917'RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK IN A
 JV6917'CONCRETE WHEEL GUARD ALONG THE SOUTHEAST SIDE OF THE NORTHBOUND LANE
 JV6917'INTERSTATE HIGHWAY 95, 1.5 FT (0.5 M) SOUTHEAST OF THE MOST SOUTHEAST
 JV6917'EDGE OF THE PAVED SOUTHEAST SHOULDER ALONG THE NORTHBOUND LANE OF
 JV6917'INTERSTATE HIGHWAY 95, 4 FT (1.2 M) NORTHEAST OF THE SOUTHWEST END OF
 JV6917'A JERSEY BARRIER, 2.4 FT (0.7 M) SOUTHWEST OF THE MOST EASTERN
 JV6917'OVERHEAD BRIDGE PIER FOR KENWOOD AVENUE BRIDGE NUMBER 3232, OVER
 JV6917'INTERSTATE HIGHWAY 95 AND ABOUT 0.5 FT (0.2 M) LOWER THAN INTERSTATE
 JV6917'HIGHWAY 95.
 JV6917
 JV6917                          STATION RECOVERY (1995)
 JV6917
 JV6917'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6917'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1588 ***********************************************************************
 JW1588  DESIGNATION -  F 198
 JW1588  PID         -  JW1588
 JW1588  STATE/COUNTY-  MD/GARRETT
 JW1588  COUNTRY     -  US
 JW1588  USGS QUAD   -  TABLE ROCK (2016)
 JW1588
 JW1588                         *CURRENT SURVEY CONTROL
 JW1588  ______________________________________________________________________
 JW1588* NAD 83(1986) POSITION- 39 20 54.07   (N) 079 26 02.76   (W)   HD_HELD1
 JW1588* NAVD 88 ORTHO HEIGHT -   734.319 (meters)     2409.18  (feet) ADJUSTED
 JW1588  ______________________________________________________________________
 JW1588  GEOID HEIGHT    -        -31.082 (meters)                     GEOID18
 JW1588  DYNAMIC HEIGHT  -        733.808 (meters)     2407.50  (feet) COMP
 JW1588  MODELED GRAVITY -    979,905.6   (mgal)                       NAVD 88
 JW1588
 JW1588  VERT ORDER      -  SECOND    CLASS I
 JW1588
 JW1588.The horizontal coordinates were determined by differentially corrected
 JW1588.hand held GPS observations or other comparable positioning techniques
 JW1588.and have an estimated accuracy of +/- 3 meters.
 JW1588
 JW1588.The orthometric height was determined by differential leveling and
 JW1588.adjusted by the NATIONAL GEODETIC SURVEY
 JW1588.in April 1995.
 JW1588
 JW1588.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1588.GEOID18 height accuracy estimate available here.
 JW1588
 JW1588.Click photographs - Photos may exist for this station.
 JW1588
 JW1588.The dynamic height is computed by dividing the NAVD 88
 JW1588.geopotential number by the normal gravity value computed on the
 JW1588.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1588.degrees latitude (g = 980.6199 gals.).
 JW1588
 JW1588.The modeled gravity was interpolated from observed gravity values.
 JW1588
 JW1588;                    North         East    Units  Estimated Accuracy
 JW1588;SPC MD       -   189,475.6     190,208.8     MT  (+/- 3 meters HH1 GPS) 
 JW1588
 JW1588_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3492956604(NAD 83)
 JW1588
 JW1588                          SUPERSEDED SURVEY CONTROL
 JW1588
 JW1588.No superseded survey control is available for this station.
 JW1588
 JW1588_MARKER: DD = SURVEY DISK
 JW1588_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW1588_SP_SET: BRIDGE
 JW1588_STAMPING: F 198 1991
 JW1588_MARK LOGO: MDSHA
 JW1588_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1588
 JW1588  HISTORY     - Date     Condition        Report By
 JW1588  HISTORY     - 1991     MONUMENTED       MDSHA
 JW1588  HISTORY     - 20090725 GOOD             GEOCAC
 JW1588  HISTORY     - 20160925 MARK NOT FOUND   GEOCAC
 JW1588
 JW1588                          STATION DESCRIPTION
 JW1588
 JW1588'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW1588'THE MARK IS LOCATED ABOUT 2.85 MI (4.59 KM) NORTH-NORTHEAST OF
 JW1588'REDHOUSE, 0.55 MI (0.89 KM) SOUTHWEST OF GORTNER AND ALONG U.S.
 JW1588'HIGHWAY 219.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARK FROM THE
 JW1588'POST OFFICE IN OAKLAND, GO SOUTHWEST ON SECOND STREET FOR 0.2 MI (0.3
 JW1588'KM) TO U.S. HIGHWAY 219.  TURN LEFT AND GO SOUTH ON U.S. HIGHWAY
 JW1588'219 FOR 4.9 MI (7.9 KM) TO THE MARK ON THE LEFT.  THE POINT IS MARKED
 JW1588'WITH A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE
 JW1588'CONCRETE WHEELGUARD OF THE BRIDGE FOR U.S. HIGHWAY 219 PASSING OVER
 JW1588'CHERRY CREEK.  IT IS 12.5 FT (3.8 M) SOUTHEAST OF THE CENTER OF U.S.
 JW1588'HIGHWAY 219, 89.5 FT (27.3 M) SOUTHWEST OF A POWER POLE NUMBERED WM
 JW1588'1260, 74.0 FT (22.6 M) WEST OF THE NORTHWEST CORNER OF A ONE STORY
 JW1588'BLOCK BUILDING (SNYDER CABINETS) AND 1.0 FT (0.3 M) SOUTHWEST OF THE
 JW1588'NORTHEAST EDGE OF THE WHEELGUARD.  IT IS LEVEL WITH THE SURFACE OF
 JW1588'THE ROAD.
 JW1588
 JW1588                          STATION RECOVERY (2009)
 JW1588
 JW1588'RECOVERY NOTE BY GEOCACHING 2009 (BP)
 JW1588'THE DISK IS BELOW THE GUARDRAIL JUST OFF THE ROAD SURFACE.
 JW1588
 JW1588                          STATION RECOVERY (2016)
 JW1588
 JW1588'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW1588'THE HIGHWAY HAS BEEN WIDENED.  MEASUREMENTS FELL UNDER THE PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2785 ***********************************************************************
 HU2785  DESIGNATION -  F 199
 HU2785  PID         -  HU2785
 HU2785  STATE/COUNTY-  MD/WORCESTER
 HU2785  COUNTRY     -  US
 HU2785  USGS QUAD   -  BERLIN (2016)
 HU2785
 HU2785                         *CURRENT SURVEY CONTROL
 HU2785  ______________________________________________________________________
 HU2785* NAD 83(2011) POSITION- 38 20 28.48407(N) 075 11 59.69945(W)   ADJUSTED
 HU2785* NAD 83(2011) ELLIP HT-   -28.295 (meters)        (03/04/17)   ADJUSTED
 HU2785* NAD 83(2011) EPOCH   -  2010.00
 HU2785* NAVD 88 ORTHO HEIGHT -     7.730 (meters)       25.36  (feet) ADJUSTED
 HU2785  ______________________________________________________________________
 HU2785  GEOID HEIGHT    -        -36.013 (meters)                     GEOID18
 HU2785  NAD 83(2011) X  -  1,279,534.413 (meters)                     COMP
 HU2785  NAD 83(2011) Y  - -4,842,814.803 (meters)                     COMP
 HU2785  NAD 83(2011) Z  -  3,935,205.190 (meters)                     COMP
 HU2785  LAPLACE CORR    -         -0.55  (seconds)                    DEFLEC18
 HU2785  DYNAMIC HEIGHT  -          7.725 (meters)       25.34  (feet) COMP
 HU2785  MODELED GRAVITY -    980,007.4   (mgal)                       NAVD 88
 HU2785
 HU2785  VERT ORDER      -  SECOND    CLASS I
 HU2785
 HU2785  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2785  Standards:
 HU2785         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2785            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2785  -------------------------------------------------------------------
 HU2785  NETWORK    0.66   1.25           0.29   0.25   0.64     -0.03385081
 HU2785  -------------------------------------------------------------------
 HU2785  Click here for local accuracies and other accuracy information.
 HU2785
 HU2785.The horizontal coordinates were established by GPS observations
 HU2785.and adjusted by the ARCHER-SHEE LAND SURVEYING in March 2017.
 HU2785
 HU2785.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2785.been affixed to the stable North American tectonic plate. See 
 HU2785.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2785
 HU2785.The horizontal coordinates are valid at the epoch date displayed above
 HU2785.which is a decimal equivalence of Year/Month/Day.
 HU2785
 HU2785.The orthometric height was determined by differential leveling and
 HU2785.adjusted by the NATIONAL GEODETIC SURVEY
 HU2785.in November 1994.
 HU2785
 HU2785.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2785.GEOID18 height accuracy estimate available here.
 HU2785
 HU2785.Click photographs - Photos may exist for this station.
 HU2785
 HU2785.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2785
 HU2785.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2785
 HU2785.The ellipsoidal height was determined by GPS observations
 HU2785.and is referenced to NAD 83.
 HU2785
 HU2785.The dynamic height is computed by dividing the NAVD 88
 HU2785.geopotential number by the normal gravity value computed on the
 HU2785.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2785.degrees latitude (g = 980.6199 gals.).
 HU2785
 HU2785.The modeled gravity was interpolated from observed gravity values.
 HU2785
 HU2785. The following values were computed from the NAD 83(2011) position.
 HU2785
 HU2785;                    North         East     Units Scale Factor Converg.
 HU2785;SPC MD       -    76,432.705   557,359.030   MT  0.99999308   +1 07 47.3
 HU2785;SPC MD       -   250,762.97  1,828,602.08   sFT  0.99999308   +1 07 47.3
 HU2785;UTM  18      - 4,243,696.936   482,529.502   MT  0.99960376   -0 07 26.5
 HU2785
 HU2785!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2785!SPC MD       -   1.00000444  x   0.99999308  =   0.99999752
 HU2785!UTM  18      -   1.00000444  x   0.99960376  =   0.99960820
 HU2785
 HU2785_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8252943696(NAD 83)
 HU2785
 HU2785                          SUPERSEDED SURVEY CONTROL
 HU2785
 HU2785  NGVD 29 (02/25/92)    7.973  (m)           26.16   (f) ADJUSTED    2 1
 HU2785
 HU2785.Superseded values are not recommended for survey control.
 HU2785
 HU2785.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2785.See file dsdata.pdf to determine how the superseded data were derived.
 HU2785
 HU2785_MARKER: DV = VERTICAL CONTROL DISK
 HU2785_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2785_STAMPING: F 199 1991
 HU2785_MARK LOGO: NGS
 HU2785_PROJECTION: RECESSED 8 CENTIMETERS
 HU2785_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2785_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2785+STABILITY: SURFACE MOTION
 HU2785_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2785+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2016
 HU2785
 HU2785  HISTORY     - Date     Condition        Report By
 HU2785  HISTORY     - 1991     MONUMENTED       MDSHA
 HU2785  HISTORY     - 20031228 GOOD             USPSQD
 HU2785  HISTORY     - 20051220 GOOD             USPSQD
 HU2785  HISTORY     - 20130618 GOOD             ARCSHE
 HU2785  HISTORY     - 20160220 GOOD             ARCSHE
 HU2785
 HU2785                          STATION DESCRIPTION
 HU2785
 HU2785'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2785'THE MARK IS LOCATED ABOUT 6.16 MI (9.91 KM) WEST OF OCEAN CITY, 1.53
 HU2785'MI (2.46 KM) NORTHEAST OF BERLIN AND ON ROAD RIGHT-OF-WAY.  TO REACH
 HU2785'FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN, GO
 HU2785'EAST ON U.S. HIGHWAY 50 FOR 0.75 MI (1.21 KM) TO THE MARK ON THE
 HU2785'LEFT IN THE MEDIAN.  IT IS 95.8 FT (29.2 M) EAST OF A DRAINAGE INLET,
 HU2785'57.1 FT (17.4 M) NORTH OF THE CENTER LINE OF THE EASTBOUND LANES OF
 HU2785'THE HIGHWAY, 31.1 FT (9.5 M) NORTH OF A CARSONITE WITNESS POST, 27.8
 HU2785'FT (8.5 M) SOUTH OF THE CENTER LINE OF THE WESTBOUND LANES OF THE
 HU2785'HIGHWAY AND SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE POST
 HU2785'FLUSH WITH THE GROUND.
 HU2785
 HU2785                          STATION RECOVERY (2003)
 HU2785
 HU2785'RECOVERY NOTE BY US POWER SQUADRON 2003 (JW)
 HU2785'RECOVERED IN GOOD CONDITION.
 HU2785
 HU2785                          STATION RECOVERY (2005)
 HU2785
 HU2785'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU2785'RECOVERED IN GOOD CONDITION.
 HU2785
 HU2785                          STATION RECOVERY (2013)
 HU2785
 HU2785'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU2785'RECOVERED IN GOOD CONDITION.
 HU2785
 HU2785                          STATION RECOVERY (2016)
 HU2785
 HU2785'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MRA)
 HU2785'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0603 ***********************************************************************
 HV0603  DESIGNATION -  F 2
 HV0603  PID         -  HV0603
 HV0603  STATE/COUNTY-  MD/CHARLES
 HV0603  COUNTRY     -  US
 HV0603  USGS QUAD   -  POPES CREEK (2016)
 HV0603
 HV0603                         *CURRENT SURVEY CONTROL
 HV0603  ______________________________________________________________________
 HV0603* NAD 83(1986) POSITION- 38 27 48.     (N) 076 59 07.     (W)   SCALED
 HV0603* NAVD 88 ORTHO HEIGHT -    52.384 (meters)      171.86  (feet) ADJUSTED
 HV0603  ______________________________________________________________________
 HV0603  GEOID HEIGHT    -        -33.196 (meters)                     GEOID18
 HV0603  DYNAMIC HEIGHT  -         52.352 (meters)      171.76  (feet) COMP
 HV0603  MODELED GRAVITY -    980,016.5   (mgal)                       NAVD 88
 HV0603
 HV0603  VERT ORDER      -  FIRST     CLASS II
 HV0603
 HV0603.The horizontal coordinates were scaled from a map and have
 HV0603.an estimated accuracy of +/- 6 seconds.
 HV0603
 HV0603.The orthometric height was determined by differential leveling and
 HV0603.adjusted by the NATIONAL GEODETIC SURVEY
 HV0603.in June 1991.
 HV0603
 HV0603.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0603.GEOID18 height accuracy estimate available here.
 HV0603
 HV0603.Click photographs - Photos may exist for this station.
 HV0603
 HV0603.The dynamic height is computed by dividing the NAVD 88
 HV0603.geopotential number by the normal gravity value computed on the
 HV0603.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0603.degrees latitude (g = 980.6199 gals.).
 HV0603
 HV0603.The modeled gravity was interpolated from observed gravity values.
 HV0603
 HV0603;                    North         East    Units  Estimated Accuracy
 HV0603;SPC MD       -    88,430.      401,290.      MT  (+/- 180 meters Scaled)
 HV0603
 HV0603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH267590(NAD 83)
 HV0603
 HV0603                          SUPERSEDED SURVEY CONTROL
 HV0603
 HV0603  NGVD 29 (05/01/89)   52.636  (m)          172.69   (f) ADJUSTED    1 2
 HV0603  NGVD 29 (??/??/87)   52.662  (m)          172.78   (f) SUPERSEDED  1 2
 HV0603
 HV0603.Superseded values are not recommended for survey control.
 HV0603
 HV0603.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0603.See file dsdata.pdf to determine how the superseded data were derived.
 HV0603
 HV0603_MARKER: DB = BENCH MARK DISK
 HV0603_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0603_STAMPING: F 2 1917
 HV0603_MARK LOGO: CGS
 HV0603_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0603+STABILITY: SURFACE MOTION
 HV0603
 HV0603  HISTORY     - Date     Condition        Report By
 HV0603  HISTORY     - 1917     MONUMENTED       CGS
 HV0603  HISTORY     - 1971     GOOD             NGS
 HV0603  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0603
 HV0603                          STATION DESCRIPTION
 HV0603
 HV0603'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0603'1.8 MI NW FROM FAULKNER.
 HV0603'1.8 MILES NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM THE
 HV0603'STATION AT FAULKNER, CHARLES COUNTY, AT BEL ALTON (FORMERLY KNOWN
 HV0603'AS COX), AT THE CROSSING OF STATE HIGHWAY 558, AND 37.5 FEET
 HV0603'NORTHWEST OF THE CENTER OF THE CROSSING.  THE TOP OF A STONE POST
 HV0603'LETTERED 1 AND PROJECTING 2 INCHES ABOVE GROUND.
 HV0603
 HV0603                          STATION RECOVERY (1971)
 HV0603
 HV0603'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0603'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0045 ***********************************************************************
 JV0045  DESIGNATION -  F 20
 JV0045  PID         -  JV0045
 JV0045  STATE/COUNTY-  MD/CECIL
 JV0045  COUNTRY     -  US
 JV0045  USGS QUAD   -  CONOWINGO DAM (2016)
 JV0045
 JV0045                         *CURRENT SURVEY CONTROL
 JV0045  ______________________________________________________________________
 JV0045* NAD 83(1986) POSITION- 39 41 15.     (N) 076 12 09.     (W)   SCALED
 JV0045* NAVD 88 ORTHO HEIGHT -    36.429 (meters)      119.52  (feet) ADJUSTED
 JV0045  ______________________________________________________________________
 JV0045  GEOID HEIGHT    -        -32.892 (meters)                     GEOID18
 JV0045  DYNAMIC HEIGHT  -         36.411 (meters)      119.46  (feet) COMP
 JV0045  MODELED GRAVITY -    980,140.8   (mgal)                       NAVD 88
 JV0045
 JV0045  VERT ORDER      -  FIRST     CLASS II
 JV0045
 JV0045.The horizontal coordinates were scaled from a map and have
 JV0045.an estimated accuracy of +/- 6 seconds.
 JV0045
 JV0045.The orthometric height was determined by differential leveling and
 JV0045.adjusted by the NATIONAL GEODETIC SURVEY
 JV0045.in June 1991.
 JV0045
 JV0045.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0045.GEOID18 height accuracy estimate available here.
 JV0045
 JV0045.Click photographs - Photos may exist for this station.
 JV0045
 JV0045.The dynamic height is computed by dividing the NAVD 88
 JV0045.geopotential number by the normal gravity value computed on the
 JV0045.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0045.degrees latitude (g = 980.6199 gals.).
 JV0045
 JV0045.The modeled gravity was interpolated from observed gravity values.
 JV0045
 JV0045;                    North         East    Units  Estimated Accuracy
 JV0045;SPC MD       -   224,630.      468,410.      MT  (+/- 180 meters Scaled)
 JV0045
 JV0045_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ968937(NAD 83)
 JV0045
 JV0045                          SUPERSEDED SURVEY CONTROL
 JV0045
 JV0045  NGVD 29 (11/26/84)   36.681  (m)          120.34   (f) ADJUSTED    1 2
 JV0045
 JV0045.Superseded values are not recommended for survey control.
 JV0045
 JV0045.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0045.See file dsdata.pdf to determine how the superseded data were derived.
 JV0045
 JV0045_MARKER: DB = BENCH MARK DISK
 JV0045_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0045_SP_SET: CULVERT
 JV0045_STAMPING: F 20 1955
 JV0045_MARK LOGO: CGS
 JV0045_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0045
 JV0045  HISTORY     - Date     Condition        Report By
 JV0045  HISTORY     - 1955     MONUMENTED       CGS
 JV0045
 JV0045                          STATION DESCRIPTION
 JV0045
 JV0045'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0045'2.2 MI NW FROM CONOWINGO DAM.
 JV0045'ABOUT 2.15 MILES NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV0045'THE STATION AT CONOWINGO DAM, ABOUT 287 YARDS NORTHWEST OF MILE
 JV0045'POST 12, ABOUT 80 YARDS SOUTHEAST OF A CURVE, IN THE TOP OF
 JV0045'NORTHWEST END OF NORTHEAST CONCRETE HEAD WALL OF A 15-INCH PIPE
 JV0045'CULVERT UNDER TRACK, 8 FEET NORTHEAST OF NORTHEAST RAIL AND ABOUT
 JV0045'1 1/2 FEET BELOW LEVEL OF TRACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0880 ***********************************************************************
 JV0880  DESIGNATION -  F 25
 JV0880  PID         -  JV0880
 JV0880  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0880  COUNTRY     -  US
 JV0880  USGS QUAD   -  BELTSVILLE (2016)
 JV0880
 JV0880                         *CURRENT SURVEY CONTROL
 JV0880  ______________________________________________________________________
 JV0880* NAD 83(1986) POSITION- 39 04 54.     (N) 076 54 13.     (W)   SCALED
 JV0880* NAVD 88 ORTHO HEIGHT -    98.967 (meters)      324.69  (feet) ADJUSTED
 JV0880  ______________________________________________________________________
 JV0880  GEOID HEIGHT    -        -32.138 (meters)                     GEOID18
 JV0880  DYNAMIC HEIGHT  -         98.915 (meters)      324.52  (feet) COMP
 JV0880  MODELED GRAVITY -    980,093.4   (mgal)                       NAVD 88
 JV0880
 JV0880  VERT ORDER      -  SECOND    CLASS 0
 JV0880
 JV0880.The horizontal coordinates were scaled from a map and have
 JV0880.an estimated accuracy of +/- 6 seconds.
 JV0880
 JV0880.The orthometric height was determined by differential leveling and
 JV0880.adjusted by the NATIONAL GEODETIC SURVEY
 JV0880.in June 1991.
 JV0880
 JV0880.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0880.GEOID18 height accuracy estimate available here.
 JV0880
 JV0880.Click photographs - Photos may exist for this station.
 JV0880
 JV0880.The dynamic height is computed by dividing the NAVD 88
 JV0880.geopotential number by the normal gravity value computed on the
 JV0880.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0880.degrees latitude (g = 980.6199 gals.).
 JV0880
 JV0880.The modeled gravity was interpolated from observed gravity values.
 JV0880
 JV0880;                    North         East    Units  Estimated Accuracy
 JV0880;SPC MD       -   157,080.      408,340.      MT  (+/- 180 meters Scaled)
 JV0880
 JV0880_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ353275(NAD 83)
 JV0880
 JV0880                          SUPERSEDED SURVEY CONTROL
 JV0880
 JV0880  NGVD 29 (11/26/84)   99.181  (m)          325.40   (f) ADJUSTED    2 0
 JV0880
 JV0880.Superseded values are not recommended for survey control.
 JV0880
 JV0880.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0880.See file dsdata.pdf to determine how the superseded data were derived.
 JV0880
 JV0880_MARKER: DB = BENCH MARK DISK
 JV0880_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0880_SP_SET: CURB
 JV0880_STAMPING: F 25 1957
 JV0880_MARK LOGO: CGS
 JV0880_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0880
 JV0880  HISTORY     - Date     Condition        Report By
 JV0880  HISTORY     - 1957     MONUMENTED       CGS
 JV0880  HISTORY     - 19920808 MARK NOT FOUND   USPSQD
 JV0880
 JV0880                          STATION DESCRIPTION
 JV0880
 JV0880'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0880'3.5 MI NW FROM BELTSVILLE.
 JV0880'FROM THE JUNCTION OF U.S. HIGHWAY 1 AND OLD GUNPOWDER ROAD IN
 JV0880'BELTSVILLE, GO NORTHWEST ON GUNPOWDER ROAD 3.4 MILES TO A ROAD
 JV0880'RIGHT AT SIGN CONTEE, TURN RIGHT 0.9 MILE TO FARM DRIVE ON LEFT.
 JV0880'MARK IS SET IN THE CONCRETE CURB ON THE EAST SIDE OF DRIVE, 24.5
 JV0880'FEET FROM THE CENTERLINE OF MAIN ROAD, 13.5 FEET FROM THE
 JV0880'CENTERLINE OF DRIVEWAY, 4 FEET SOUTH OF THE SOUTHEAST CONCRETE
 JV0880'GATE POST AND 3.5 FEET SOUTH OF A WITNESS POST.  THE DISK IS
 JV0880'STAMPED F 25 1957.
 JV0880
 JV0880                          STATION RECOVERY (1992)
 JV0880
 JV0880'RECOVERY NOTE BY US POWER SQUADRON 1992 (JLF)
 JV0880'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0929 ***********************************************************************
 JV0929  DESIGNATION -  F 26
 JV0929  PID         -  JV0929
 JV0929  STATE/COUNTY-  MD/BALTIMORE
 JV0929  COUNTRY     -  US
 JV0929  USGS QUAD   -  RELAY (2016)
 JV0929
 JV0929                         *CURRENT SURVEY CONTROL
 JV0929  ______________________________________________________________________
 JV0929* NAD 83(1986) POSITION- 39 14 08.7    (N) 076 38 56.0    (W)   HD_HELD2
 JV0929* NAVD 88 ORTHO HEIGHT -    24.791 (meters)       81.34  (feet) ADJUSTED
 JV0929  ______________________________________________________________________
 JV0929  GEOID HEIGHT    -        -32.701 (meters)                     GEOID18
 JV0929  DYNAMIC HEIGHT  -         24.778 (meters)       81.29  (feet) COMP
 JV0929  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV0929
 JV0929  VERT ORDER      -  SECOND    CLASS 0
 JV0929
 JV0929.The horizontal coordinates were established by autonomous hand held GPS
 JV0929.observations and have an estimated accuracy of +/- 10 meters.
 JV0929
 JV0929.The orthometric height was determined by differential leveling and
 JV0929.adjusted by the NATIONAL GEODETIC SURVEY
 JV0929.in June 1991.
 JV0929
 JV0929.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0929.GEOID18 height accuracy estimate available here.
 JV0929
 JV0929.Click photographs - Photos may exist for this station.
 JV0929
 JV0929.The dynamic height is computed by dividing the NAVD 88
 JV0929.geopotential number by the normal gravity value computed on the
 JV0929.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0929.degrees latitude (g = 980.6199 gals.).
 JV0929
 JV0929.The modeled gravity was interpolated from observed gravity values.
 JV0929
 JV0929;                    North         East    Units  Estimated Accuracy
 JV0929;SPC MD       -   174,236.      430,313.      MT  (+/- 10 meters HH2 GPS)
 JV0929
 JV0929_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5769044233(NAD 83)
 JV0929
 JV0929                          SUPERSEDED SURVEY CONTROL
 JV0929
 JV0929  NGVD 29 (11/26/84)   25.029  (m)           82.12   (f) ADJUSTED    2 0
 JV0929
 JV0929.Superseded values are not recommended for survey control.
 JV0929
 JV0929.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0929.See file dsdata.pdf to determine how the superseded data were derived.
 JV0929
 JV0929_MARKER: DB = BENCH MARK DISK
 JV0929_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0929_STAMPING: F 26 1957
 JV0929_MARK LOGO: CGS
 JV0929_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0929_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0929+STABILITY: SURFACE MOTION
 JV0929_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0929+SATELLITE: SATELLITE OBSERVATIONS - October 01, 2009
 JV0929
 JV0929  HISTORY     - Date     Condition        Report By
 JV0929  HISTORY     - 1957     MONUMENTED       CGS
 JV0929  HISTORY     - 1960     GOOD             CGS
 JV0929  HISTORY     - 19960201 GOOD             MCCRON
 JV0929  HISTORY     - 20091001 GOOD             MD-005
 JV0929
 JV0929                          STATION DESCRIPTION
 JV0929
 JV0929'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0929'4.3 MI W FROM BROOKLYN.
 JV0929'4.0 MILES WEST ALONG HARBOR TUNNEL THRUWAY FROM TOLL GATE AT
 JV0929'BROOKLYN, THENCE ABOUT 0.3 MILE NORTH ALONG BALTIMORE-WASHINGTON
 JV0929'EXPRESSWAY, ABOUT 58 YARDS NORTHWEST OF A GREENHOUSE WITH RED
 JV0929'ROOF, 88 FEET EAST OF CENTER LINE OF NORTH BOUND TRAFFIC LANE OF
 JV0929'THE EXPRESSWAY, 151 FEET SOUTH-SOUTHEAST OF SOUTH END OF A GUARD
 JV0929'RAIL, 3 FEET SOUTH OF THE NORTH ONE OF A ROW OF WHITE STEEL
 JV0929'POSTS, ABOUT 1 1/2 FEET ABOVE LEVEL OF EXPRESSWAY AND SET IN THE
 JV0929'TOP OF A CONCRETE POST FLUSH WITH GROUND.
 JV0929
 JV0929                          STATION RECOVERY (1996)
 JV0929
 JV0929'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 JV0929'RECOVERED AS DESCRIBED.
 JV0929
 JV0929                          STATION RECOVERY (2009)
 JV0929
 JV0929'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (PAS)
 JV0929'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (PAS).
 JV0929'THE STATION IS LOCATED ON THE EAST SIDE OF THE BALTIMORE WASHINGTON
 JV0929'PARKWAY AND BEHIND THE TOWNHOUSES AT THE END OF VIRGINIA AVENUE. IT IS
 JV0929'6 FEET WEST OF A CONCRETE SIDEWALK, 40 FEET EAST OF THE PARKWAY AND
 JV0929'36.9 FEET NORTHWEST A POLE NUMBERED 561198. THE IS A METAL I-BEAM 3
 JV0929'FEET NORTH AS WELL AS 3-FEET SOUTH OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3580 ***********************************************************************
 JV3580  DESIGNATION -  F 27
 JV3580  PID         -  JV3580
 JV3580  STATE/COUNTY-  MD/WASHINGTON
 JV3580  COUNTRY     -  US
 JV3580  USGS QUAD   -  MYERSVILLE (2016)
 JV3580
 JV3580                         *CURRENT SURVEY CONTROL
 JV3580  ______________________________________________________________________
 JV3580* NAD 83(1986) POSITION- 39 33 00.     (N) 077 36 53.     (W)   SCALED
 JV3580* NAVD 88 ORTHO HEIGHT -   257.228 (meters)      843.92  (feet) ADJUSTED
 JV3580  ______________________________________________________________________
 JV3580  GEOID HEIGHT    -        -33.535 (meters)                     GEOID18
 JV3580  DYNAMIC HEIGHT  -        257.078 (meters)      843.43  (feet) COMP
 JV3580  MODELED GRAVITY -    980,037.0   (mgal)                       NAVD 88
 JV3580
 JV3580  VERT ORDER      -  SECOND    CLASS 0
 JV3580
 JV3580.The horizontal coordinates were scaled from a map and have
 JV3580.an estimated accuracy of +/- 6 seconds.
 JV3580
 JV3580.The orthometric height was determined by differential leveling and
 JV3580.adjusted by the NATIONAL GEODETIC SURVEY
 JV3580.in June 1991.
 JV3580
 JV3580.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3580.GEOID18 height accuracy estimate available here.
 JV3580
 JV3580.Click photographs - Photos may exist for this station.
 JV3580
 JV3580.The dynamic height is computed by dividing the NAVD 88
 JV3580.geopotential number by the normal gravity value computed on the
 JV3580.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3580.degrees latitude (g = 980.6199 gals.).
 JV3580
 JV3580.The modeled gravity was interpolated from observed gravity values.
 JV3580
 JV3580;                    North         East    Units  Estimated Accuracy
 JV3580;SPC MD       -   209,240.      347,160.      MT  (+/- 180 meters Scaled)
 JV3580
 JV3580_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ753810(NAD 83)
 JV3580
 JV3580                          SUPERSEDED SURVEY CONTROL
 JV3580
 JV3580  NGVD 29 (11/26/84)  257.431  (m)          844.59   (f) ADJUSTED    2 0
 JV3580
 JV3580.Superseded values are not recommended for survey control.
 JV3580
 JV3580.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3580.See file dsdata.pdf to determine how the superseded data were derived.
 JV3580
 JV3580_MARKER: DB = BENCH MARK DISK
 JV3580_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3580_SP_SET: FOUNDATION
 JV3580_STAMPING: F 27 1958
 JV3580_MARK LOGO: CGS
 JV3580_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3580
 JV3580  HISTORY     - Date     Condition        Report By
 JV3580  HISTORY     - 1958     MONUMENTED       CGS
 JV3580  HISTORY     - 20080208 MARK NOT FOUND   GEOCAC
 JV3580
 JV3580                          STATION DESCRIPTION
 JV3580
 JV3580'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3580'1 MI SE FROM MOUNT LENA.
 JV3580'1.0 MILE SOUTHEAST ALONG THE MAIN ROAD FROM THE JUNCTION OF SAN
 JV3580'MAR ROAD AT MOUNT LENA, 0.2 MILE WEST OF THE JUNCTION OF U.S.
 JV3580'HIGHWAY 40, MARK IS SOUTHWEST OF THE ROAD, 8.0 FEET SOUTHWEST OF
 JV3580'THE NORTHWEST CORNER OF A HOUSE, AND IN THE NORTHWEST CORNER OF
 JV3580'CONCRETE FOUNDATION FOR WELL.
 JV3580
 JV3580                          STATION RECOVERY (2008)
 JV3580
 JV3580'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3580'THE PROPERTY OWNERS, WHO HAVE LIVED AT THE LOCATION FOR MANY YEARS
 JV3580'HAVE NO KNOWLEDGE OF THE MARK.  THERE IS A WELL THAT IS EITHER NEWER
 JV3580'OR REPLACED SINCE 1958 AT APPROXIMATELY THE SITE DESCRIBED BUT THE
 JV3580'FOUNDATION (IF THERE IS ONE) IS COVERED BY THE LAWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0443 ***********************************************************************
 JV0443  DESIGNATION -  F 29
 JV0443  PID         -  JV0443
 JV0443  STATE/COUNTY-  MD/BALTIMORE
 JV0443  COUNTRY     -  US
 JV0443  USGS QUAD   -  MIDDLE RIVER (2016)
 JV0443
 JV0443                         *CURRENT SURVEY CONTROL
 JV0443  ______________________________________________________________________
 JV0443* NAD 83(1986) POSITION- 39 21 18.     (N) 076 29 09.     (W)   SCALED
 JV0443* NAVD 88 ORTHO HEIGHT -    46.678 (meters)      153.14  (feet) ADJUSTED
 JV0443  ______________________________________________________________________
 JV0443  GEOID HEIGHT    -        -32.898 (meters)                     GEOID18
 JV0443  DYNAMIC HEIGHT  -         46.653 (meters)      153.06  (feet) COMP
 JV0443  MODELED GRAVITY -    980,101.3   (mgal)                       NAVD 88
 JV0443
 JV0443  VERT ORDER      -  FIRST     CLASS II
 JV0443
 JV0443.The horizontal coordinates were scaled from a map and have
 JV0443.an estimated accuracy of +/- 6 seconds.
 JV0443
 JV0443.The orthometric height was determined by differential leveling and
 JV0443.adjusted by the NATIONAL GEODETIC SURVEY
 JV0443.in June 1991.
 JV0443
 JV0443.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0443.GEOID18 height accuracy estimate available here.
 JV0443
 JV0443.Click photographs - Photos may exist for this station.
 JV0443
 JV0443.The dynamic height is computed by dividing the NAVD 88
 JV0443.geopotential number by the normal gravity value computed on the
 JV0443.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0443.degrees latitude (g = 980.6199 gals.).
 JV0443
 JV0443.The modeled gravity was interpolated from observed gravity values.
 JV0443
 JV0443;                    North         East    Units  Estimated Accuracy
 JV0443;SPC MD       -   187,540.      444,320.      MT  (+/- 180 meters Scaled)
 JV0443
 JV0443_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ719572(NAD 83)
 JV0443
 JV0443                          SUPERSEDED SURVEY CONTROL
 JV0443
 JV0443  NGVD 29 (11/26/84)   46.921  (m)          153.94   (f) ADJUSTED    1 2
 JV0443
 JV0443.Superseded values are not recommended for survey control.
 JV0443
 JV0443.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0443.See file dsdata.pdf to determine how the superseded data were derived.
 JV0443
 JV0443_MARKER: DB = BENCH MARK DISK
 JV0443_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0443_STAMPING: F 29 1958
 JV0443_MARK LOGO: CGS
 JV0443_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0443+STABILITY: SURFACE MOTION
 JV0443
 JV0443  HISTORY     - Date     Condition        Report By
 JV0443  HISTORY     - 1958     MONUMENTED       CGS
 JV0443  HISTORY     - 1959     GOOD             CGS
 JV0443
 JV0443                          STATION DESCRIPTION
 JV0443
 JV0443'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0443'2 MI NE FROM GOLDEN RING.
 JV0443'ABOUT 1.0 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE
 JV0443'GOLDEN RING JUNION HIGH SCHOOL AT GOLDEN RIGHT, THENCE 1.0
 JV0443'MILES NORTH-NORTHEAST ALONG RIDGE ROAD, 0.5 MILE NORTHEAST OF
 JV0443'THE JUNCTION OF TRUMPS MILL ROAD, NEAR THE NORTH END OF A LONG ROW
 JV0443'OF HEDGE, 15 1/2 FEET EAST OF THE CENTER LINE OF RIDGE ROAD,
 JV0443'49 FEET SOUTHEAST AND ACROSS THE ROAD FROM POWER LINE POLE NO.
 JV0443'36, 2 FEET ABOVE THE LEVEL OF THE ROAD, 1 FOOT NORTH OF A METAL
 JV0443'WITNESS POST, SET IN THE TOP OF A CONCRETE POST PROJECTING 4
 JV0443'INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0444 ***********************************************************************
 JV0444  DESIGNATION -  F 29 RESET
 JV0444  PID         -  JV0444
 JV0444  STATE/COUNTY-  MD/BALTIMORE
 JV0444  COUNTRY     -  US
 JV0444  USGS QUAD   -  MIDDLE RIVER (2016)
 JV0444
 JV0444                         *CURRENT SURVEY CONTROL
 JV0444  ______________________________________________________________________
 JV0444* NAD 83(1986) POSITION- 39 21 17.     (N) 076 29 08.     (W)   SCALED
 JV0444* NAVD 88 ORTHO HEIGHT -    45.917 (meters)      150.65  (feet) ADJUSTED
 JV0444  ______________________________________________________________________
 JV0444  GEOID HEIGHT    -        -32.899 (meters)                     GEOID18
 JV0444  DYNAMIC HEIGHT  -         45.893 (meters)      150.57  (feet) COMP
 JV0444  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV0444
 JV0444  VERT ORDER      -  FIRST     CLASS I
 JV0444
 JV0444.The horizontal coordinates were scaled from a map and have
 JV0444.an estimated accuracy of +/- 6 seconds.
 JV0444
 JV0444.The orthometric height was determined by differential leveling and
 JV0444.adjusted by the NATIONAL GEODETIC SURVEY
 JV0444.in June 1991.
 JV0444
 JV0444.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0444.GEOID18 height accuracy estimate available here.
 JV0444
 JV0444.Click photographs - Photos may exist for this station.
 JV0444
 JV0444.The dynamic height is computed by dividing the NAVD 88
 JV0444.geopotential number by the normal gravity value computed on the
 JV0444.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0444.degrees latitude (g = 980.6199 gals.).
 JV0444
 JV0444.The modeled gravity was interpolated from observed gravity values.
 JV0444
 JV0444;                    North         East    Units  Estimated Accuracy
 JV0444;SPC MD       -   187,510.      444,340.      MT  (+/- 180 meters Scaled)
 JV0444
 JV0444_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ720571(NAD 83)
 JV0444
 JV0444                          SUPERSEDED SURVEY CONTROL
 JV0444
 JV0444  NGVD 29 (11/26/84)   46.161  (m)          151.45   (f) ADJUSTED    1 1
 JV0444
 JV0444.Superseded values are not recommended for survey control.
 JV0444
 JV0444.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0444.See file dsdata.pdf to determine how the superseded data were derived.
 JV0444
 JV0444_MARKER: DB = BENCH MARK DISK
 JV0444_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0444_STAMPING: F 29 RESET 1961
 JV0444_MARK LOGO: CGS
 JV0444_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0444+STABILITY: SURFACE MOTION
 JV0444
 JV0444  HISTORY     - Date     Condition        Report By
 JV0444  HISTORY     - 1961     MONUMENTED       CGS
 JV0444  HISTORY     - 1971     GOOD             NGS
 JV0444
 JV0444                          STATION DESCRIPTION
 JV0444
 JV0444'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0444'2 MI NE FROM GOLDEN RING.
 JV0444'ABOUT 1.0 MILE NORTHEAST ALONG STATE HIGHWAY 7 FROM THE JUNIOR
 JV0444'HIGH SCHOOL AT GOLDEN RING, THENCE 1.0 MILE NORTH ALONG RIDGE
 JV0444'ROAD, ABOUT 0.1 MILE SOUTH OF THE SOUTH END OF THE ROAD
 JV0444'OVERPASS FOR INTERSTATE HIGHWAY 95, 99 YARDS NORTH OF THE
 JV0444'JUNCTION OF A DRIVEWAY LEADING EAST TO THE ESSEX COMMUNITY
 JV0444'COLLEGE, 31 FEET WEST OF THE CENTER LINE OF THE ROAD, 1 1/2
 JV0444'FEET SOUTH OF POWER POLE NUMBER 295035, 140 FEET SOUTHWEST OF
 JV0444'THE CENTER OF A JUNCTION OF A PAVED ROAD LEADING NORTHEAST AND
 JV0444'DEAD ENDS AT INTERSTATE HIGHWAY 95, ABOUT 1 FOOT ABOVE THE
 JV0444'LEVEL OF THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 JV0444'2 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1266 ***********************************************************************
 HV1266  DESIGNATION -  F 3
 HV1266  PID         -  HV1266
 HV1266  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1266  COUNTRY     -  US
 HV1266  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1266
 HV1266                         *CURRENT SURVEY CONTROL
 HV1266  ______________________________________________________________________
 HV1266* NAD 83(1986) POSITION- 38 56 11.     (N) 076 57 16.     (W)   SCALED
 HV1266* NAVD 88 ORTHO HEIGHT -    15.423 (meters)       50.60  (feet) POSTED
 HV1266  ______________________________________________________________________
 HV1266  GEOID HEIGHT    -        -32.153 (meters)                     GEOID18
 HV1266  DYNAMIC HEIGHT  -         15.41  (meters)       50.6   (feet) COMP
 HV1266  MODELED GRAVITY -    980,103.9   (mgal)                       NAVD 88
 HV1266
 HV1266  VERT ORDER      -  * POSTED, SEE BELOW
 HV1266
 HV1266.The horizontal coordinates were scaled from a map and have
 HV1266.an estimated accuracy of +/- 6 seconds.
 HV1266
 HV1266.The orthometric height was determined by differential leveling
 HV1266.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV1266
 HV1266.* This is a POSTED BENCH MARK height.
 HV1266
 HV1266.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1266.GEOID18 height accuracy estimate available here.
 HV1266
 HV1266.Click photographs - Photos may exist for this station.
 HV1266
 HV1266.The dynamic height is computed by dividing the NAVD 88
 HV1266.geopotential number by the normal gravity value computed on the
 HV1266.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1266.degrees latitude (g = 980.6199 gals.).
 HV1266
 HV1266.The modeled gravity was interpolated from observed gravity values.
 HV1266
 HV1266;                    North         East    Units  Estimated Accuracy
 HV1266;SPC MD       -   140,950.      403,950.      MT  (+/- 180 meters Scaled)
 HV1266
 HV1266_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ306115(NAD 83)
 HV1266
 HV1266                          SUPERSEDED SURVEY CONTROL
 HV1266
 HV1266  NGVD 29 (11/26/84)   15.650  (m)           51.35   (f) ADJUSTED    1 2
 HV1266
 HV1266.Superseded values are not recommended for survey control.
 HV1266
 HV1266.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1266.See file dsdata.pdf to determine how the superseded data were derived.
 HV1266
 HV1266_MARKER: DB = BENCH MARK DISK
 HV1266_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1266_STAMPING: F 3 1933
 HV1266_MARK LOGO: CGS
 HV1266_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1266+STABILITY: SURFACE MOTION
 HV1266
 HV1266  HISTORY     - Date     Condition        Report By
 HV1266  HISTORY     - 1933     MONUMENTED       CGS
 HV1266  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV1266
 HV1266                          STATION DESCRIPTION
 HV1266
 HV1266'DESCRIBED BY COAST AND GEODETIC SURVEY 1933
 HV1266'AT COTTAGE CITY.
 HV1266'AT COTTAGE CITY, PRINCE GEORGES COUNTY, ON THE BALTIMORE AND OHIO
 HV1266'RAILROAD, 510 FEET SOUTH OF THE BARNEY STREET OVERPASS, 34 FEET
 HV1266'EAST OF THE EAST RAIL OF THE NORTH-BOUND MAIN TRACK, 33 FEET
 HV1266'WEST OF THE CENTER LINE OF A GRAVEL STREET, AND LEVEL WITH THE
 HV1266'TOP OF THE RAIL.  A STANDARD DISK, STAMPED F 3 1933 AND SET IN
 HV1266'THE TOP OF A CONCRETE POST.
 HV1266
 HV1266                          STATION RECOVERY (1971)
 HV1266
 HV1266'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV1266'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1127 ***********************************************************************
 JV1127  DESIGNATION -  F 30 C OF B
 JV1127  PID         -  JV1127
 JV1127  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1127  COUNTRY     -  US
 JV1127  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1127
 JV1127                         *CURRENT SURVEY CONTROL
 JV1127  ______________________________________________________________________
 JV1127* NAD 83(1986) POSITION- 39 17 26.     (N) 076 35 14.     (W)   SCALED
 JV1127* NAVD 88 ORTHO HEIGHT -    31.094 (meters)      102.01  (feet) ADJUSTED
 JV1127  ______________________________________________________________________
 JV1127  GEOID HEIGHT    -        -32.790 (meters)                     GEOID18
 JV1127  DYNAMIC HEIGHT  -         31.078 (meters)      101.96  (feet) COMP
 JV1127  MODELED GRAVITY -    980,102.9   (mgal)                       NAVD 88
 JV1127
 JV1127  VERT ORDER      -  FIRST     CLASS I
 JV1127
 JV1127.The horizontal coordinates were scaled from a map and have
 JV1127.an estimated accuracy of +/- 6 seconds.
 JV1127
 JV1127.The orthometric height was determined by differential leveling and
 JV1127.adjusted by the NATIONAL GEODETIC SURVEY
 JV1127.in June 1991.
 JV1127
 JV1127.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1127.GEOID18 height accuracy estimate available here.
 JV1127
 JV1127.Click photographs - Photos may exist for this station.
 JV1127
 JV1127.The dynamic height is computed by dividing the NAVD 88
 JV1127.geopotential number by the normal gravity value computed on the
 JV1127.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1127.degrees latitude (g = 980.6199 gals.).
 JV1127
 JV1127.The modeled gravity was interpolated from observed gravity values.
 JV1127
 JV1127;                    North         East    Units  Estimated Accuracy
 JV1127;SPC MD       -   180,340.      435,610.      MT  (+/- 180 meters Scaled)
 JV1127
 JV1127_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ631502(NAD 83)
 JV1127
 JV1127                          SUPERSEDED SURVEY CONTROL
 JV1127
 JV1127  NGVD 29 (11/26/84)   31.337  (m)          102.81   (f) ADJUSTED    1 1
 JV1127
 JV1127.Superseded values are not recommended for survey control.
 JV1127
 JV1127.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1127.See file dsdata.pdf to determine how the superseded data were derived.
 JV1127
 JV1127_MARKER: DD = SURVEY DISK
 JV1127_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1127_STAMPING: F 30
 JV1127_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1127+STABILITY: SURFACE MOTION
 JV1127
 JV1127  HISTORY     - Date     Condition        Report By
 JV1127  HISTORY     - UNK      MONUMENTED       MD0050
 JV1127  HISTORY     - 1959     GOOD             CGS
 JV1127  HISTORY     - 1971     GOOD             NGS
 JV1127  HISTORY     - 20020121 MARK NOT FOUND   USPSQD
 JV1127
 JV1127                          STATION DESCRIPTION
 JV1127
 JV1127'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1127'AT BALTIMORE.
 JV1127'AT BALTIMORE, AT THE SOUTHEAST CORNER OF THE INTERSECTION OF
 JV1127'SOUTH CHESTER AND LOMBARD STREET, 6.5 FEET EAST OF THE EAST
 JV1127'CURB OF SOUTH CHESTER STREET, 5.4 FEET SOUTH OF THE SOUTH CURB
 JV1127'OF EAST LOMBARD STREET, SET IN THE TOP OF A CONCRETE POST 3
 JV1127'INCHES BELOW THE LEVEL OF THE SIDEWALK AND PROTECTED BY A CAST
 JV1127'IRON COVER MARKED CITY OF BALTIMORE SURVEY POINT.
 JV1127
 JV1127                          STATION RECOVERY (1971)
 JV1127
 JV1127'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1127'RECOVERED IN GOOD CONDITION.
 JV1127
 JV1127                          STATION RECOVERY (2002)
 JV1127
 JV1127'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV1127'MARK PROBABLY DESTROYED DURING CONSTRUCTION OF CONCRETE HANDICAPPED
 JV1127'ACCESS RAMP
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0411 ***********************************************************************
 JV0411  DESIGNATION -  F 31
 JV0411  PID         -  JV0411
 JV0411  STATE/COUNTY-  MD/HARFORD
 JV0411  COUNTRY     -  US
 JV0411  USGS QUAD   -  EDGEWOOD (2016)
 JV0411
 JV0411                         *CURRENT SURVEY CONTROL
 JV0411  ______________________________________________________________________
 JV0411* NAD 83(1986) POSITION- 39 26 14.     (N) 076 20 52.     (W)   SCALED
 JV0411* NAVD 88 ORTHO HEIGHT -    66.944 (meters)      219.63  (feet) ADJUSTED
 JV0411  ______________________________________________________________________
 JV0411  GEOID HEIGHT    -        -33.019 (meters)                     GEOID18
 JV0411  DYNAMIC HEIGHT  -         66.909 (meters)      219.52  (feet) COMP
 JV0411  MODELED GRAVITY -    980,102.6   (mgal)                       NAVD 88
 JV0411
 JV0411  VERT ORDER      -  FIRST     CLASS I
 JV0411
 JV0411.The horizontal coordinates were scaled from a map and have
 JV0411.an estimated accuracy of +/- 6 seconds.
 JV0411
 JV0411.The orthometric height was determined by differential leveling and
 JV0411.adjusted by the NATIONAL GEODETIC SURVEY
 JV0411.in June 1991.
 JV0411
 JV0411.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0411.GEOID18 height accuracy estimate available here.
 JV0411
 JV0411.Click photographs - Photos may exist for this station.
 JV0411
 JV0411.The dynamic height is computed by dividing the NAVD 88
 JV0411.geopotential number by the normal gravity value computed on the
 JV0411.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0411.degrees latitude (g = 980.6199 gals.).
 JV0411
 JV0411.The modeled gravity was interpolated from observed gravity values.
 JV0411
 JV0411;                    North         East    Units  Estimated Accuracy
 JV0411;SPC MD       -   196,750.      456,150.      MT  (+/- 180 meters Scaled)
 JV0411
 JV0411_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ840661(NAD 83)
 JV0411
 JV0411                          SUPERSEDED SURVEY CONTROL
 JV0411
 JV0411  NGVD 29 (11/26/84)   67.189  (m)          220.44   (f) ADJUSTED    1 1
 JV0411
 JV0411.Superseded values are not recommended for survey control.
 JV0411
 JV0411.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0411.See file dsdata.pdf to determine how the superseded data were derived.
 JV0411
 JV0411_MARKER: DB = BENCH MARK DISK
 JV0411_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0411_STAMPING: F 31 1959
 JV0411_MARK LOGO: CGS
 JV0411_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0411+STABILITY: SURFACE MOTION
 JV0411
 JV0411  HISTORY     - Date     Condition        Report By
 JV0411  HISTORY     - 1959     MONUMENTED       CGS
 JV0411  HISTORY     - 1971     GOOD             NGS
 JV0411  HISTORY     - 19891010 MARK NOT FOUND   NGS
 JV0411
 JV0411                          STATION DESCRIPTION
 JV0411
 JV0411'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0411'AT JOPPA.
 JV0411'AT JOPPA, ABOUT 0.4 MILE WEST ALONG STATE HIGHWAY 7 FROM THE
 JV0411'TRINITY LUTHERAN CHURCH AND CEMETERY, 149 FEET WEST OF THE CENTER
 JV0411'OF THE INTERSECTION OF THE HIGHWAY AND STATE HIGHWAY 152, 27 1/2
 JV0411'FEET SOUTH OF THE CENTER LINE OF STATE HIGHWAY 7, 22 1/2 FEET
 JV0411'WEST OF THE CENTER LINE OF A GRAVELED DRIVEWAY LEADING SOUTH, 55
 JV0411'FEET EAST OF POWER POLE NUMBER 56783, ABOUT 2 FEET BELOW THE
 JV0411'LEVEL OF THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST WHICH
 JV0411'IS 2 INCHES BELOW THE SURFACE OF THE GROUND.
 JV0411
 JV0411                          STATION RECOVERY (1989)
 JV0411
 JV0411'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0411'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2178 ***********************************************************************
 JV2178  DESIGNATION -  F 34
 JV2178  PID         -  JV2178
 JV2178  STATE/COUNTY-  MD/MONTGOMERY
 JV2178  COUNTRY     -  US
 JV2178  USGS QUAD   -  ROCKVILLE (2016)
 JV2178
 JV2178                         *CURRENT SURVEY CONTROL
 JV2178  ______________________________________________________________________
 JV2178* NAD 83(1986) POSITION- 39 04 50.     (N) 077 08 30.     (W)   SCALED
 JV2178* NAVD 88 ORTHO HEIGHT -   130.185 (meters)      427.12  (feet) ADJUSTED
 JV2178  ______________________________________________________________________
 JV2178  GEOID HEIGHT    -        -31.736 (meters)                     GEOID18
 JV2178  DYNAMIC HEIGHT  -        130.117 (meters)      426.89  (feet) COMP
 JV2178  MODELED GRAVITY -    980,099.0   (mgal)                       NAVD 88
 JV2178
 JV2178  VERT ORDER      -  FIRST     CLASS II
 JV2178
 JV2178.The horizontal coordinates were scaled from a map and have
 JV2178.an estimated accuracy of +/- 6 seconds.
 JV2178
 JV2178.The orthometric height was determined by differential leveling and
 JV2178.adjusted by the NATIONAL GEODETIC SURVEY
 JV2178.in June 1991.
 JV2178
 JV2178.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2178.GEOID18 height accuracy estimate available here.
 JV2178
 JV2178.Click photographs - Photos may exist for this station.
 JV2178
 JV2178.The dynamic height is computed by dividing the NAVD 88
 JV2178.geopotential number by the normal gravity value computed on the
 JV2178.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2178.degrees latitude (g = 980.6199 gals.).
 JV2178
 JV2178.The modeled gravity was interpolated from observed gravity values.
 JV2178
 JV2178;                    North         East    Units  Estimated Accuracy
 JV2178;SPC MD       -   156,960.      387,740.      MT  (+/- 180 meters Scaled)
 JV2178
 JV2178_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ147278(NAD 83)
 JV2178
 JV2178                          SUPERSEDED SURVEY CONTROL
 JV2178
 JV2178  NGVD 29 (11/26/84)  130.404  (m)          427.83   (f) ADJUSTED    1 2
 JV2178
 JV2178.Superseded values are not recommended for survey control.
 JV2178
 JV2178.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2178.See file dsdata.pdf to determine how the superseded data were derived.
 JV2178
 JV2178_MARKER: DB = BENCH MARK DISK
 JV2178_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2178_SP_SET: OVERPASS
 JV2178_STAMPING: F 34 1938
 JV2178_MARK LOGO: CGS
 JV2178_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2178
 JV2178  HISTORY     - Date     Condition        Report By
 JV2178  HISTORY     - 1938     MONUMENTED       CGS
 JV2178  HISTORY     - 1944     GOOD             CGS
 JV2178  HISTORY     - 20020125 MARK NOT FOUND   MDSHA
 JV2178
 JV2178                          STATION DESCRIPTION
 JV2178
 JV2178'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2178'0.3 MI SE FROM ROCKVILLE.
 JV2178'0.3 MILE SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2178'THE STATION AT ROCKVILLE, MONTGOMERY COUNTY, AT A CONCRETE
 JV2178'OVERPASS, IN THE CENTER OF THE TOP F THE SOUTHEAST BASE OF A
 JV2178'RETAINING WALL, 22 FEET SOUTHWEST OF THE CENTER LINE OF THE
 JV2178'NORTHBOUND TRACK, 3.5 FEET FROM THE END OF THE BASE, AND 1.5
 JV2178'FEET ABOVE THE LEVEL OF THE RAILS.  A STANDARD DISK, STAMPED
 JV2178'F 34 1938.
 JV2178
 JV2178                          STATION RECOVERY (1944)
 JV2178
 JV2178'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944
 JV2178'RECOVERED IN GOOD CONDITION.
 JV2178
 JV2178                          STATION RECOVERY (2002)
 JV2178
 JV2178'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV2178'THE STATION WAS SEARCHED FOR AND NOT RECOVERED. APPEARS THE STATION
 JV2178'HAS BEEN DESTROYED BY THE CONSTRUCTION OF THE WASHINGTON METRO LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3188 ***********************************************************************
 JV3188  DESIGNATION -  F 35
 JV3188  PID         -  JV3188
 JV3188  STATE/COUNTY-  MD/FREDERICK
 JV3188  COUNTRY     -  US
 JV3188  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3188
 JV3188                         *CURRENT SURVEY CONTROL
 JV3188  ______________________________________________________________________
 JV3188* NAD 83(1986) POSITION- 39 16 27.     (N) 077 32 32.     (W)   SCALED
 JV3188* NAVD 88 ORTHO HEIGHT -    70.745 (meters)      232.10  (feet) ADJUSTED
 JV3188  ______________________________________________________________________
 JV3188  GEOID HEIGHT    -        -32.728 (meters)                     GEOID18
 JV3188  DYNAMIC HEIGHT  -         70.707 (meters)      231.98  (feet) COMP
 JV3188  MODELED GRAVITY -    980,082.9   (mgal)                       NAVD 88
 JV3188
 JV3188  VERT ORDER      -  FIRST     CLASS II
 JV3188
 JV3188.The horizontal coordinates were scaled from a map and have
 JV3188.an estimated accuracy of +/- 6 seconds.
 JV3188
 JV3188.The orthometric height was determined by differential leveling and
 JV3188.adjusted by the NATIONAL GEODETIC SURVEY
 JV3188.in June 1991.
 JV3188
 JV3188.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3188.GEOID18 height accuracy estimate available here.
 JV3188
 JV3188.Click photographs - Photos may exist for this station.
 JV3188
 JV3188.The dynamic height is computed by dividing the NAVD 88
 JV3188.geopotential number by the normal gravity value computed on the
 JV3188.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3188.degrees latitude (g = 980.6199 gals.).
 JV3188
 JV3188.The modeled gravity was interpolated from observed gravity values.
 JV3188
 JV3188;                    North         East    Units  Estimated Accuracy
 JV3188;SPC MD       -   178,580.      353,210.      MT  (+/- 180 meters Scaled)
 JV3188
 JV3188_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ807502(NAD 83)
 JV3188
 JV3188                          SUPERSEDED SURVEY CONTROL
 JV3188
 JV3188  NGVD 29 (11/26/84)   70.963  (m)          232.82   (f) ADJUSTED    1 2
 JV3188
 JV3188.Superseded values are not recommended for survey control.
 JV3188
 JV3188.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3188.See file dsdata.pdf to determine how the superseded data were derived.
 JV3188
 JV3188_MARKER: DB = BENCH MARK DISK
 JV3188_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV3188_SP_SET: PIER
 JV3188_STAMPING: F 35 1938
 JV3188_MARK LOGO: CGS
 JV3188_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3188_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3188_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3188+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2010
 JV3188
 JV3188  HISTORY     - Date     Condition        Report By
 JV3188  HISTORY     - 1938     MONUMENTED       CGS
 JV3188  HISTORY     - 1942     GOOD             CGS
 JV3188  HISTORY     - 1979     GOOD             NGS
 JV3188  HISTORY     - 19950323 GOOD             NGS
 JV3188  HISTORY     - 20100314 GOOD             GEOCAC
 JV3188
 JV3188                          STATION DESCRIPTION
 JV3188
 JV3188'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV3188'0.5 MI NW FROM POINT OF ROCKS.
 JV3188'ON THE BALTIMORE AND WHEELING BRANCH OF THE B. AND O. R.R., 0.6
 JV3188'MILE WEST OF THE POINT OF ROCKS STATION.  VERTICAL MARK SET IN
 JV3188'THE BASE OF THE SECOND PIER OF THE NORTH APPROACH TO CONCRETE AND
 JV3188'STEEL BRIDGE OVER THE POTOMAC RIVER.  SET IN THE NORTH FACE OF
 JV3188'THE BASE OF THE PIER UNDER THE CENTER COLUMN OF THE SECOND PIER.
 JV3188'125 FT EAST OF EAST ENTRANCE TO POINT OF ROCKS B. AND O. R.R.
 JV3188'TUNNEL.  10 FT NORTH OF CENTER LINE OF EASTBOUND TRACK.  2 FT
 JV3188'ABOVE THE LEVEL OF THE RAILS.
 JV3188
 JV3188                          STATION RECOVERY (1942)
 JV3188
 JV3188'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV3188'RECOVERED IN GOOD CONDITION.
 JV3188
 JV3188                          STATION RECOVERY (1979)
 JV3188
 JV3188'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3188'RECOVERED IN GOOD CONDITION.
 JV3188
 JV3188                          STATION RECOVERY (1995)
 JV3188
 JV3188'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (GAS)
 JV3188'0.1 KM (0.05 MI) SOUTHERLY ALONG U.S.  HIGHWAY 15 FROM THE JUNCTION OF
 JV3188'STATE HIGHWAY 28 IN POINT OF ROCKS, SET VERTICALLY IN THE NORTH FACE
 JV3188'OF THE 2ND CONCRETE PIER SOUTHWEST OF THE NORTHEAST ABUTMENT OF THE
 JV3188'HIGHWAY BRIDGE SPANNING THE CHESSIE SYSTEMS RAILROAD AND THE POTOMAC
 JV3188'RIVER, 45.0 M (147.6 FT) EAST OF THE EAST END THE POINT OF ROCKS
 JV3188'RAILROAD TUNNEL, 4.9 M (16.1 FT) SOUTH OF THE NEAR RAIL OF THE MOST
 JV3188'NORTHERLY OF 2 TRACKS, 0.5 M (1.6 FT) ABOVE THE LEVEL OF THE TRACKS,
 JV3188'AND DIRECTLY UNDER THE CENTER COLUMN OF THE PIER.
 JV3188
 JV3188                          STATION RECOVERY (2010)
 JV3188
 JV3188'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV3188'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1402 ***********************************************************************
 JV1402  DESIGNATION -  F 36
 JV1402  PID         -  JV1402
 JV1402  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1402  COUNTRY     -  US
 JV1402  USGS QUAD   -  ODENTON (2016)
 JV1402
 JV1402                         *CURRENT SURVEY CONTROL
 JV1402  ______________________________________________________________________
 JV1402* NAD 83(1986) POSITION- 39 03 24.4    (N) 076 38 56.6    (W)   HD_HELD2
 JV1402* NAVD 88 ORTHO HEIGHT -    37.207 (meters)      122.07  (feet) ADJUSTED
 JV1402  ______________________________________________________________________
 JV1402  GEOID HEIGHT    -        -32.840 (meters)                     GEOID18
 JV1402  DYNAMIC HEIGHT  -         37.187 (meters)      122.00  (feet) COMP
 JV1402  MODELED GRAVITY -    980,079.6   (mgal)                       NAVD 88
 JV1402
 JV1402  VERT ORDER      -  FIRST     CLASS II
 JV1402
 JV1402.The horizontal coordinates were established by autonomous hand held GPS
 JV1402.observations and have an estimated accuracy of +/- 10 meters.
 JV1402
 JV1402.The orthometric height was determined by differential leveling and
 JV1402.adjusted by the NATIONAL GEODETIC SURVEY
 JV1402.in June 1991.
 JV1402
 JV1402.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1402.GEOID18 height accuracy estimate available here.
 JV1402
 JV1402.Click photographs - Photos may exist for this station.
 JV1402
 JV1402.The dynamic height is computed by dividing the NAVD 88
 JV1402.geopotential number by the normal gravity value computed on the
 JV1402.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1402.degrees latitude (g = 980.6199 gals.).
 JV1402
 JV1402.The modeled gravity was interpolated from observed gravity values.
 JV1402
 JV1402;                    North         East    Units  Estimated Accuracy
 JV1402;SPC MD       -   154,368.      430,375.      MT  (+/- 10 meters HH2 GPS)
 JV1402
 JV1402_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5731524371(NAD 83)
 JV1402
 JV1402                          SUPERSEDED SURVEY CONTROL
 JV1402
 JV1402  NGVD 29 (11/26/84)   37.442  (m)          122.84   (f) ADJUSTED    1 2
 JV1402
 JV1402.Superseded values are not recommended for survey control.
 JV1402
 JV1402.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1402.See file dsdata.pdf to determine how the superseded data were derived.
 JV1402
 JV1402_MARKER: DB = BENCH MARK DISK
 JV1402_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1402_STAMPING: F 36 1938
 JV1402_MARK LOGO: CGS
 JV1402_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1402+STABILITY: SURFACE MOTION
 JV1402
 JV1402  HISTORY     - Date     Condition        Report By
 JV1402  HISTORY     - 1938     MONUMENTED       CGS
 JV1402
 JV1402                          STATION DESCRIPTION
 JV1402
 JV1402'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV1402'AT MILLERSVILLE.
 JV1402'AT MILLERSVILLE, ANNE ARUNDEL COUNTY, AT THE POST OFFICE, 42 FEET
 JV1402'WEST OF THE CENTER LINE OF A ROAD, 35 FEET NORTH OF THE WASHINGTON,
 JV1402'BALTIMORE AND ANNAPOLIS RAILROAD (ABANDONED) TRACK, AND 2.5 FEET
 JV1402'FROM THE SOUTHEAST CORNER OF THE POST OFFICE.  A STANDARD DISK,
 JV1402'STAMPED F 36 1938 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0955 ***********************************************************************
 HV0955  DESIGNATION -  F 37
 HV0955  PID         -  HV0955
 HV0955  STATE/COUNTY-  MD/CALVERT
 HV0955  COUNTRY     -  US
 HV0955  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0955
 HV0955                         *CURRENT SURVEY CONTROL
 HV0955  ______________________________________________________________________
 HV0955* NAD 83(1986) POSITION- 38 29 59.     (N) 076 32 24.     (W)   SCALED
 HV0955* NAVD 88 ORTHO HEIGHT -    45.091 (meters)      147.94  (feet) ADJUSTED
 HV0955  ______________________________________________________________________
 HV0955  GEOID HEIGHT    -        -34.030 (meters)                     GEOID18
 HV0955  DYNAMIC HEIGHT  -         45.063 (meters)      147.84  (feet) COMP
 HV0955  MODELED GRAVITY -    980,016.8   (mgal)                       NAVD 88
 HV0955
 HV0955  VERT ORDER      -  FIRST     CLASS II
 HV0955
 HV0955.The horizontal coordinates were scaled from a map and have
 HV0955.an estimated accuracy of +/- 6 seconds.
 HV0955
 HV0955.The orthometric height was determined by differential leveling and
 HV0955.adjusted by the NATIONAL GEODETIC SURVEY
 HV0955.in June 1991.
 HV0955
 HV0955.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0955.GEOID18 height accuracy estimate available here.
 HV0955
 HV0955.Click photographs - Photos may exist for this station.
 HV0955
 HV0955.The dynamic height is computed by dividing the NAVD 88
 HV0955.geopotential number by the normal gravity value computed on the
 HV0955.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0955.degrees latitude (g = 980.6199 gals.).
 HV0955
 HV0955.The modeled gravity was interpolated from observed gravity values.
 HV0955
 HV0955;                    North         East    Units  Estimated Accuracy
 HV0955;SPC MD       -    92,570.      440,130.      MT  (+/- 180 meters Scaled)
 HV0955
 HV0955_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH657623(NAD 83)
 HV0955
 HV0955                          SUPERSEDED SURVEY CONTROL
 HV0955
 HV0955  NGVD 29 (11/26/84)   45.379  (m)          148.88   (f) ADJUSTED    1 2
 HV0955
 HV0955.Superseded values are not recommended for survey control.
 HV0955
 HV0955.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0955.See file dsdata.pdf to determine how the superseded data were derived.
 HV0955
 HV0955_MARKER: DB = BENCH MARK DISK
 HV0955_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0955_STAMPING: F 37 1941
 HV0955_MARK LOGO: CGS
 HV0955_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0955+STABILITY: SURFACE MOTION
 HV0955
 HV0955  HISTORY     - Date     Condition        Report By
 HV0955  HISTORY     - 1941     MONUMENTED       CGS
 HV0955  HISTORY     - 1972     MARK NOT FOUND   NGS
 HV0955
 HV0955                          STATION DESCRIPTION
 HV0955
 HV0955'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0955'3.6 MI SE FROM PRINCE FREDERICK.
 HV0955'3.6 MILES SOUTHEAST ALONG STATE HIGHWAY 2 FROM THE POST OFFICE
 HV0955'AT PRINCE FREDERICK, CALVERT COUNTY, 300 FEET SOUTH OF THE JUNCTION
 HV0955'OF THE ROAD LEADING TO BROOMES ISLAND, 250 FEET NORTHEAST OF A
 HV0955'LARGE TOW-SOTRY FARMHOUSE, 18.3 FEET EAST OF THE CENTER LINE OF
 HV0955'THE ROAD, 2.8 FEET WEST OF POLE 1, 2.8 FEET EAST OF THE RIGHT-OF-WAY
 HV0955'FENCE, AND 1 FOOT WEST OF A WHITE WOODEN WITNESS POST.  A
 HV0955'STANDARD DISK, STAMPED F 37 1941 AND SET IN THE TOP OF A
 HV0955'CONCRETE POST.
 HV0955
 HV0955                          STATION RECOVERY (1972)
 HV0955
 HV0955'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HV0955'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1389 ***********************************************************************
 JV1389  DESIGNATION -  F 39
 JV1389  PID         -  JV1389
 JV1389  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1389  COUNTRY     -  US
 JV1389  USGS QUAD   -  LAUREL (2016)
 JV1389
 JV1389                         *CURRENT SURVEY CONTROL
 JV1389  ______________________________________________________________________
 JV1389* NAD 83(1986) POSITION- 39 01 23.     (N) 076 45 37.     (W)   SCALED
 JV1389* NAVD 88 ORTHO HEIGHT -    34.966 (meters)      114.72  (feet) ADJUSTED
 JV1389  ______________________________________________________________________
 JV1389  GEOID HEIGHT    -        -32.572 (meters)                     GEOID18
 JV1389  DYNAMIC HEIGHT  -         34.947 (meters)      114.66  (feet) COMP
 JV1389  MODELED GRAVITY -    980,085.3   (mgal)                       NAVD 88
 JV1389
 JV1389  VERT ORDER      -  FIRST     CLASS II
 JV1389
 JV1389.The horizontal coordinates were scaled from a map and have
 JV1389.an estimated accuracy of +/- 6 seconds.
 JV1389
 JV1389.The orthometric height was determined by differential leveling and
 JV1389.adjusted by the NATIONAL GEODETIC SURVEY
 JV1389.in June 1991.
 JV1389
 JV1389.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1389.GEOID18 height accuracy estimate available here.
 JV1389
 JV1389.Click photographs - Photos may exist for this station.
 JV1389
 JV1389.The dynamic height is computed by dividing the NAVD 88
 JV1389.geopotential number by the normal gravity value computed on the
 JV1389.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1389.degrees latitude (g = 980.6199 gals.).
 JV1389
 JV1389.The modeled gravity was interpolated from observed gravity values.
 JV1389
 JV1389;                    North         East    Units  Estimated Accuracy
 JV1389;SPC MD       -   150,590.      420,760.      MT  (+/- 180 meters Scaled)
 JV1389
 JV1389_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ476208(NAD 83)
 JV1389
 JV1389                          SUPERSEDED SURVEY CONTROL
 JV1389
 JV1389  NGVD 29 (11/26/84)   35.192  (m)          115.46   (f) ADJUSTED    1 2
 JV1389
 JV1389.Superseded values are not recommended for survey control.
 JV1389
 JV1389.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1389.See file dsdata.pdf to determine how the superseded data were derived.
 JV1389
 JV1389_MARKER: DB = BENCH MARK DISK
 JV1389_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1389+WITH SETTING: PAVEMENT
 JV1389_SP_SET: POLE BASE
 JV1389_STAMPING: F 39 1941
 JV1389_MARK LOGO: CGS
 JV1389_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1389+STABILITY: SURFACE MOTION
 JV1389
 JV1389  HISTORY     - Date     Condition        Report By
 JV1389  HISTORY     - 1941     MONUMENTED       CGS
 JV1389  HISTORY     - 1956     GOOD             CGS
 JV1389
 JV1389                          STATION DESCRIPTION
 JV1389
 JV1389'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1389'5.2 MI SW FROM ODENTON.
 JV1389'IN PRINCE GEORGES COUNTY, ABOUT 5.2 MILES SOUTHWEST ALONG THE
 JV1389'PENNSYLVANIA RAILROAD FROM THE STATION AT ODENTON, ANNE ARUNDEL
 JV1389'COUNTY, ABOUT 101 FEET SOUTHWEST OF MILEPOST 119, AT
 JV1389'POWER-TRANSMISSION LINE POLE 119-02, IN THE TOP OF THE EAST
 JV1389'CORNER OF THE CONCRETE BASE, AND 21.6 FEET NORTHWEST OF THE
 JV1389'NORTHWEST RAIL OF THE NORTHWEST TRACK.  A STANDARD DISK, STAMPED
 JV1389'F 39 1941.
 JV1389
 JV1389                          STATION RECOVERY (1956)
 JV1389
 JV1389'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956
 JV1389'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0718 ***********************************************************************
 JV0718  DESIGNATION -  F 4
 JV0718  PID         -  JV0718
 JV0718  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0718  COUNTRY     -  US
 JV0718  USGS QUAD   -  RELAY (2016)
 JV0718
 JV0718                         *CURRENT SURVEY CONTROL
 JV0718  ______________________________________________________________________
 JV0718* NAD 83(1986) POSITION- 39 12 43.     (N) 076 41 42.     (W)   SCALED
 JV0718* NAVD 88 ORTHO HEIGHT -     6.201 (meters)       20.34  (feet) ADJUSTED
 JV0718  ______________________________________________________________________
 JV0718  GEOID HEIGHT    -        -32.591 (meters)                     GEOID18
 JV0718  DYNAMIC HEIGHT  -          6.198 (meters)       20.33  (feet) COMP
 JV0718  MODELED GRAVITY -    980,101.2   (mgal)                       NAVD 88
 JV0718
 JV0718  VERT ORDER      -  FIRST     CLASS II
 JV0718
 JV0718.The horizontal coordinates were scaled from a map and have
 JV0718.an estimated accuracy of +/- 6 seconds.
 JV0718
 JV0718.The orthometric height was determined by differential leveling and
 JV0718.adjusted by the NATIONAL GEODETIC SURVEY
 JV0718.in June 1991.
 JV0718
 JV0718.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0718.GEOID18 height accuracy estimate available here.
 JV0718
 JV0718.Click photographs - Photos may exist for this station.
 JV0718
 JV0718.The dynamic height is computed by dividing the NAVD 88
 JV0718.geopotential number by the normal gravity value computed on the
 JV0718.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0718.degrees latitude (g = 980.6199 gals.).
 JV0718
 JV0718.The modeled gravity was interpolated from observed gravity values.
 JV0718
 JV0718;                    North         East    Units  Estimated Accuracy
 JV0718;SPC MD       -   171,580.      426,340.      MT  (+/- 180 meters Scaled)
 JV0718
 JV0718_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ536416(NAD 83)
 JV0718
 JV0718                          SUPERSEDED SURVEY CONTROL
 JV0718
 JV0718  NGVD 29 (11/26/84)    6.444  (m)           21.14   (f) ADJUSTED    1 2
 JV0718
 JV0718.Superseded values are not recommended for survey control.
 JV0718
 JV0718.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0718.See file dsdata.pdf to determine how the superseded data were derived.
 JV0718
 JV0718_MARKER: DB = BENCH MARK DISK
 JV0718_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0718_SP_SET: STEP OF WINGWALL
 JV0718_STAMPING: F 4 1933
 JV0718_MARK LOGO: CGS
 JV0718_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0718
 JV0718  HISTORY     - Date     Condition        Report By
 JV0718  HISTORY     - 1933     MONUMENTED       CGS
 JV0718  HISTORY     - 1971     GOOD             NGS
 JV0718  HISTORY     - 20030315 MARK NOT FOUND   USPSQD
 JV0718
 JV0718                          STATION DESCRIPTION
 JV0718
 JV0718'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0718'0.9 MI SE FROM ELKRIDGE.
 JV0718'ABOUT 0.9 MILE SOUTHEAST ALONG FURNACE ROAD FROM THE JUNCTION OF
 JV0718'MAIN STREET AT ELKRIDGE, HOWARD COUNTY, 12 FEET NORTHEAST OF THE
 JV0718'CENTER LINE OF THE ROAD, AT THE PENNSYLVANIA RAILROAD BRIDGE OVER
 JV0718'FURNACE ROAD, IN TOP OF THE BOTTOM STEP FOR THE EAST STONE WING
 JV0718'WALL AND ABOUT 2 FEET ABOVE THE LEVEL OF THE ROAD, 50 FEET EAST
 JV0718'OF THE CENTER LINE OF THE BRIDGE.  ALSO ABOUT 1.1 MILES SOUTH
 JV0718'ALONG THE P. RR FROM THE CROSSING OF THE B AND O RR AT RELAY.
 JV0718
 JV0718                          STATION RECOVERY (2003)
 JV0718
 JV0718'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 JV0718'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0964 ***********************************************************************
 HV0964  DESIGNATION -  F 40
 HV0964  PID         -  HV0964
 HV0964  STATE/COUNTY-  MD/CHARLES
 HV0964  COUNTRY     -  US
 HV0964  USGS QUAD   -  HUGHESVILLE (2016)
 HV0964
 HV0964                         *CURRENT SURVEY CONTROL
 HV0964  ______________________________________________________________________
 HV0964* NAD 83(1986) POSITION- 38 33 24.     (N) 076 50 46.     (W)   SCALED
 HV0964* NAVD 88 ORTHO HEIGHT -    30.477 (meters)       99.99  (feet) ADJUSTED
 HV0964  ______________________________________________________________________
 HV0964  GEOID HEIGHT    -        -33.288 (meters)                     GEOID18
 HV0964  DYNAMIC HEIGHT  -         30.459 (meters)       99.93  (feet) COMP
 HV0964  MODELED GRAVITY -    980,022.1   (mgal)                       NAVD 88
 HV0964
 HV0964  VERT ORDER      -  FIRST     CLASS II
 HV0964
 HV0964.The horizontal coordinates were scaled from a map and have
 HV0964.an estimated accuracy of +/- 6 seconds.
 HV0964
 HV0964.The orthometric height was determined by differential leveling and
 HV0964.adjusted by the NATIONAL GEODETIC SURVEY
 HV0964.in June 1991.
 HV0964
 HV0964.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0964.GEOID18 height accuracy estimate available here.
 HV0964
 HV0964.Click photographs - Photos may exist for this station.
 HV0964
 HV0964.The dynamic height is computed by dividing the NAVD 88
 HV0964.geopotential number by the normal gravity value computed on the
 HV0964.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0964.degrees latitude (g = 980.6199 gals.).
 HV0964
 HV0964.The modeled gravity was interpolated from observed gravity values.
 HV0964
 HV0964;                    North         East    Units  Estimated Accuracy
 HV0964;SPC MD       -    98,810.      413,410.      MT  (+/- 180 meters Scaled)
 HV0964
 HV0964_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH391691(NAD 83)
 HV0964
 HV0964                          SUPERSEDED SURVEY CONTROL
 HV0964
 HV0964  NGVD 29 (11/26/84)   30.729  (m)          100.82   (f) ADJUSTED    1 2
 HV0964
 HV0964.Superseded values are not recommended for survey control.
 HV0964
 HV0964.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0964.See file dsdata.pdf to determine how the superseded data were derived.
 HV0964
 HV0964_MARKER: DB = BENCH MARK DISK
 HV0964_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0964_SP_SET: CULVERT
 HV0964_STAMPING: F 40 1941
 HV0964_MARK LOGO: CGS
 HV0964_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0964
 HV0964  HISTORY     - Date     Condition        Report By
 HV0964  HISTORY     - 1941     MONUMENTED       CGS
 HV0964
 HV0964                          STATION DESCRIPTION
 HV0964
 HV0964'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0964'6.3 MI SE FROM WALDORF.
 HV0964'6.3 MILES SOUTH-EAST ALONG STATE HIGHWAY NO. 5 FROM THE STATION
 HV0964'AT WALDORF, 0.25 MILE NORTH-WEST OF THE CROSS ROADS AT BRYANTOWN,
 HV0964'SET IN THE SOUTH-EAST CORNER OF THE SOUTH-WEST END OF THE 24-INCH
 HV0964'CONCRETE CULVERT UNDER THE HIGHWAY, 29 FEET SOUTH-WEST OF THE
 HV0964'CENTER-LINE OF THE NEW HIGHWAY, 120 FEET NORTH-EAST OF THE
 HV0964'CENTER-LINE OF THE OLD HIGHWAY, 2 FEET NORTH-WEST OF THE
 HV0964'SOUTH-EAST END OF THE CULVERT, 80 FEET SOUTH-WEST OF TELEPHONE
 HV0964'POLE NO. 230.  A STANDARD DISK STAMPED F-40 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0965 ***********************************************************************
 HV0965  DESIGNATION -  F 40 RESET
 HV0965  PID         -  HV0965
 HV0965  STATE/COUNTY-  MD/CHARLES
 HV0965  COUNTRY     -  US
 HV0965  USGS QUAD   -  HUGHESVILLE (2016)
 HV0965
 HV0965                         *CURRENT SURVEY CONTROL
 HV0965  ______________________________________________________________________
 HV0965* NAD 83(1986) POSITION- 38 33 24.     (N) 076 50 46.     (W)   SCALED
 HV0965* NAVD 88 ORTHO HEIGHT -    31.522 (meters)      103.42  (feet) ADJUSTED
 HV0965  ______________________________________________________________________
 HV0965  GEOID HEIGHT    -        -33.288 (meters)                     GEOID18
 HV0965  DYNAMIC HEIGHT  -         31.503 (meters)      103.36  (feet) COMP
 HV0965  MODELED GRAVITY -    980,022.1   (mgal)                       NAVD 88
 HV0965
 HV0965  VERT ORDER      -  SECOND    CLASS 0
 HV0965
 HV0965.The horizontal coordinates were scaled from a map and have
 HV0965.an estimated accuracy of +/- 6 seconds.
 HV0965
 HV0965.The orthometric height was determined by differential leveling and
 HV0965.adjusted by the NATIONAL GEODETIC SURVEY
 HV0965.in June 1991.
 HV0965
 HV0965.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0965.GEOID18 height accuracy estimate available here.
 HV0965
 HV0965.Click photographs - Photos may exist for this station.
 HV0965
 HV0965.The dynamic height is computed by dividing the NAVD 88
 HV0965.geopotential number by the normal gravity value computed on the
 HV0965.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0965.degrees latitude (g = 980.6199 gals.).
 HV0965
 HV0965.The modeled gravity was interpolated from observed gravity values.
 HV0965
 HV0965;                    North         East    Units  Estimated Accuracy
 HV0965;SPC MD       -    98,810.      413,410.      MT  (+/- 180 meters Scaled)
 HV0965
 HV0965_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH391691(NAD 83)
 HV0965
 HV0965                          SUPERSEDED SURVEY CONTROL
 HV0965
 HV0965  NGVD 29 (11/26/84)   31.757  (m)          104.19   (f) ADJUSTED    2 0
 HV0965
 HV0965.Superseded values are not recommended for survey control.
 HV0965
 HV0965.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0965.See file dsdata.pdf to determine how the superseded data were derived.
 HV0965
 HV0965_MARKER: DB = BENCH MARK DISK
 HV0965_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0965_STAMPING: F 40 RESET 1965
 HV0965_MARK LOGO: CGS
 HV0965_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0965+STABILITY: SURFACE MOTION
 HV0965
 HV0965  HISTORY     - Date     Condition        Report By
 HV0965  HISTORY     - 1965     MONUMENTED       MDSRC
 HV0965  HISTORY     - 1969     GOOD             CGS
 HV0965
 HV0965                          STATION DESCRIPTION
 HV0965
 HV0965'DESCRIBED BY MD STATE ROADS COMM 1965
 HV0965'6.3 MI SE FROM WALDORF.
 HV0965'ABOUT 6.3 MILES SOUTHEAST OF THE WALDORF POST OFFICE ALONG
 HV0965'MARYLAND ROUTE 5 ON THE RIGHT NEAR THE INTERSECTION OF MD. 5 AND
 HV0965'BRYAN TOWN ROAD.  0.1 MILE SOUTH OF THE JUNCTION OF MARYLAND
 HV0965'ROUTE 5 AND BRYAN TOWN ROAD ON THE RIGHT.  26.0 FEET SOUTH OF THE
 HV0965'CENTERLINE OF BRYAN TOWN ROAD.  70.3 FEET EAST OF A GRAVEL
 HV0965'DRIVEWAY TO  1 1/2 STORY FRAME DWELLING, 2.0 FEET EAST OF POLE
 HV0965'NO. 374, AND 1.0 FEET NORTH OF A METAL WITNESS POST, SET IN THE
 HV0965'TOP OF A CONCRETE POST PROJECTING INCHES.
 HV0965
 HV0965                          STATION RECOVERY (1969)
 HV0965
 HV0965'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969
 HV0965'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0544 ***********************************************************************
 HV0544  DESIGNATION -  F 41 RESET
 HV0544  PID         -  HV0544
 HV0544  STATE/COUNTY-  MD/ST MARYS
 HV0544  COUNTRY     -  US
 HV0544  USGS QUAD   -  LEONARDTOWN (2016)
 HV0544
 HV0544                         *CURRENT SURVEY CONTROL
 HV0544  ______________________________________________________________________
 HV0544* NAD 83(1986) POSITION- 38 18 14.     (N) 076 39 22.     (W)   SCALED
 HV0544* NAVD 88 ORTHO HEIGHT -     2.739 (meters)        8.99  (feet) ADJUSTED
 HV0544  ______________________________________________________________________
 HV0544  GEOID HEIGHT    -        -33.831 (meters)                     GEOID18
 HV0544  DYNAMIC HEIGHT  -          2.737 (meters)        8.98  (feet) COMP
 HV0544  MODELED GRAVITY -    980,036.2   (mgal)                       NAVD 88
 HV0544
 HV0544  VERT ORDER      -  FIRST     CLASS II
 HV0544
 HV0544.The horizontal coordinates were scaled from a map and have
 HV0544.an estimated accuracy of +/- 6 seconds.
 HV0544
 HV0544.The orthometric height was determined by differential leveling and
 HV0544.adjusted by the NATIONAL GEODETIC SURVEY
 HV0544.in June 1991.
 HV0544
 HV0544.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0544.GEOID18 height accuracy estimate available here.
 HV0544
 HV0544.Click photographs - Photos may exist for this station.
 HV0544
 HV0544.The dynamic height is computed by dividing the NAVD 88
 HV0544.geopotential number by the normal gravity value computed on the
 HV0544.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0544.degrees latitude (g = 980.6199 gals.).
 HV0544
 HV0544.The modeled gravity was interpolated from observed gravity values.
 HV0544
 HV0544;                    North         East    Units  Estimated Accuracy
 HV0544;SPC MD       -    70,790.      430,080.      MT  (+/- 180 meters Scaled)
 HV0544
 HV0544_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH551408(NAD 83)
 HV0544
 HV0544                          SUPERSEDED SURVEY CONTROL
 HV0544
 HV0544  NGVD 29 (11/26/84)    2.980  (m)            9.78   (f) ADJUSTED    1 2
 HV0544
 HV0544.Superseded values are not recommended for survey control.
 HV0544
 HV0544.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0544.See file dsdata.pdf to determine how the superseded data were derived.
 HV0544
 HV0544_MARKER: DB = BENCH MARK DISK
 HV0544_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0544_SP_SET: BRIDGE WALL
 HV0544_STAMPING: F 41 RESET 1967
 HV0544_MARK LOGO: CGS
 HV0544_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0544_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0544+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2007
 HV0544
 HV0544  HISTORY     - Date     Condition        Report By
 HV0544  HISTORY     - 1967     MONUMENTED       MDDT
 HV0544  HISTORY     - 1971     GOOD             NGS
 HV0544  HISTORY     - 20070315 GOOD             MDSHA
 HV0544
 HV0544                          STATION DESCRIPTION
 HV0544
 HV0544'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0544'1.8 MI NW FROM LEONARDTOWN.
 HV0544'ABOUT 1.8 MILES NORTHWEST ALONG WASHINGTON STREET AND STATE
 HV0544'HIGHWAY 5 FROM THE COURTHOUSE AT LEONARDTOWN, NEAR A STATE
 HV0544'HIGHWAY GARAGE, 24.5 FEET NORTHWEST OF THE CENTER LINE OF OLD ROUTE
 HV0544'243, 58 FEET SOUTHWEST OF THE NORTHEAST END OF OLD ROUTE 243, 103
 HV0544'FEET SOUTHWEST OF THE CENTER LINE OF STATE HIGHWAY 5, 52 FEET
 HV0544'SOUTH OF THE EAST CORNER OF THE STATE HIGHWAY COMMISSION BUILDING,
 HV0544'127 FEET WEST OF THE NORTHEAST END OF THE SOUTHWEST CONCRETE
 HV0544'GUARD RAIL FOR THE HIGHWAY BRIDGE OVER MC INTOSH RUN, SET ON THE
 HV0544'TOP AND 11.9 FEET SOUTHWEST OF THE NORTHEAST END OF A 1-FOOT
 HV0544'CONCRETE RETAINING WALL AND 2 FEET ABOVE THE LEVEL OF THE OLD
 HV0544'HIGHWAY.
 HV0544
 HV0544                          STATION RECOVERY (2007)
 HV0544
 HV0544'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 HV0544'RECOVERED AS DESCRIBED
 HV0544'PROPERTY IS THE FUTURE SITE OF THE LEONARDTOWN WINERY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3219 ***********************************************************************
 JV3219  DESIGNATION -  F 42
 JV3219  PID         -  JV3219
 JV3219  STATE/COUNTY-  MD/WASHINGTON
 JV3219  COUNTRY     -  US
 JV3219  USGS QUAD   -  HEDGESVILLE (2016)
 JV3219
 JV3219                         *CURRENT SURVEY CONTROL
 JV3219  ______________________________________________________________________
 JV3219* NAD 83(1986) POSITION- 39 37 21.     (N) 077 52 33.     (W)   SCALED
 JV3219* NAVD 88 ORTHO HEIGHT -   133.855 (meters)      439.16  (feet) ADJUSTED
 JV3219  ______________________________________________________________________
 JV3219  GEOID HEIGHT    -        -34.304 (meters)                     GEOID18
 JV3219  DYNAMIC HEIGHT  -        133.776 (meters)      438.90  (feet) COMP
 JV3219  MODELED GRAVITY -    980,039.1   (mgal)                       NAVD 88
 JV3219
 JV3219  VERT ORDER      -  FIRST     CLASS II
 JV3219
 JV3219.The horizontal coordinates were scaled from a map and have
 JV3219.an estimated accuracy of +/- 6 seconds.
 JV3219
 JV3219.The orthometric height was determined by differential leveling and
 JV3219.adjusted by the NATIONAL GEODETIC SURVEY
 JV3219.in June 1991.
 JV3219
 JV3219.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3219.GEOID18 height accuracy estimate available here.
 JV3219
 JV3219.Click photographs - Photos may exist for this station.
 JV3219
 JV3219.The dynamic height is computed by dividing the NAVD 88
 JV3219.geopotential number by the normal gravity value computed on the
 JV3219.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3219.degrees latitude (g = 980.6199 gals.).
 JV3219
 JV3219.The modeled gravity was interpolated from observed gravity values.
 JV3219
 JV3219;                    North         East    Units  Estimated Accuracy
 JV3219;SPC MD       -   217,480.      324,800.      MT  (+/- 180 meters Scaled)
 JV3219
 JV3219_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ531898(NAD 83)
 JV3219
 JV3219                          SUPERSEDED SURVEY CONTROL
 JV3219
 JV3219  NGVD 29 (11/26/84)  134.060  (m)          439.83   (f) ADJUSTED    1 2
 JV3219
 JV3219.Superseded values are not recommended for survey control.
 JV3219
 JV3219.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3219.See file dsdata.pdf to determine how the superseded data were derived.
 JV3219
 JV3219_MARKER: DB = BENCH MARK DISK
 JV3219_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 JV3219_STAMPING: F 42 1941
 JV3219_MARK LOGO: CGS
 JV3219_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3219
 JV3219  HISTORY     - Date     Condition        Report By
 JV3219  HISTORY     - 1941     MONUMENTED       CGS
 JV3219  HISTORY     - 1976     MARK NOT FOUND   LOCSUR
 JV3219  HISTORY     - 19901025 MARK NOT FOUND   NGS
 JV3219
 JV3219                          STATION DESCRIPTION
 JV3219
 JV3219'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV3219'9.2 MI SW FROM HAGERSTOWN.
 JV3219'9.2 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JV3219'THE STATION AT HAGERSTOWN, AT THE NORTHWEST END OF A LONG HILL,
 JV3219'AT MILE-POST NO. 96, 42.6 FEET SOUTHWEST OF THE SOUTHWEST
 JV3219'RAIL OF THE WEST-BOUND TRACK, 52.5 FEET WEST OF MILE-POST NO. 96,
 JV3219'74.2 FEET SOUTHWEST OF SIGNAL TOWER NO. A 960, 3 FEET NORTHEAST
 JV3219'OF THE RIGHT-OF-WAY FENCE, 1.5 FEET NORTHWEST OF A WHITE MARKER
 JV3219'POST STENCILED USBM.  A STANDARD DISK, STAMPED F 42 1941 AND
 JV3219'SET IN THE TOP OF A PRE-CAST CONCRETE POST.
 JV3219
 JV3219                          STATION RECOVERY (1976)
 JV3219
 JV3219'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1976
 JV3219'MARK NOT FOUND.
 JV3219
 JV3219                          STATION RECOVERY (1990)
 JV3219
 JV3219'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV3219'SEARCHED FOR BUT NOT FOUND. THE RAILROAD IS NO LONGER IN USE AND THE
 JV3219'ENTIRE AREA HAS BEEN DISTURBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0024 ***********************************************************************
 JW0024  DESIGNATION -  F 43
 JW0024  PID         -  JW0024
 JW0024  STATE/COUNTY-  MD/WASHINGTON
 JW0024  COUNTRY     -  US
 JW0024  USGS QUAD   -  BELLEGROVE (2016)
 JW0024
 JW0024                         *CURRENT SURVEY CONTROL
 JW0024  ______________________________________________________________________
 JW0024* NAD 83(1986) POSITION- 39 38 30.     (N) 078 15 28.     (W)   SCALED
 JW0024* NAVD 88 ORTHO HEIGHT -   138.511 (meters)      454.43  (feet) ADJUSTED
 JW0024  ______________________________________________________________________
 JW0024  GEOID HEIGHT    -        -33.895 (meters)                     GEOID18
 JW0024  DYNAMIC HEIGHT  -        138.430 (meters)      454.17  (feet) COMP
 JW0024  MODELED GRAVITY -    980,038.4   (mgal)                       NAVD 88
 JW0024
 JW0024  VERT ORDER      -  FIRST     CLASS II
 JW0024
 JW0024.The horizontal coordinates were scaled from a map and have
 JW0024.an estimated accuracy of +/- 6 seconds.
 JW0024
 JW0024.The orthometric height was determined by differential leveling and
 JW0024.adjusted by the NATIONAL GEODETIC SURVEY
 JW0024.in June 1991.
 JW0024
 JW0024.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0024.GEOID18 height accuracy estimate available here.
 JW0024
 JW0024.Click photographs - Photos may exist for this station.
 JW0024
 JW0024.The dynamic height is computed by dividing the NAVD 88
 JW0024.geopotential number by the normal gravity value computed on the
 JW0024.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0024.degrees latitude (g = 980.6199 gals.).
 JW0024
 JW0024.The modeled gravity was interpolated from observed gravity values.
 JW0024
 JW0024;                    North         East    Units  Estimated Accuracy
 JW0024;SPC MD       -   219,990.      292,030.      MT  (+/- 180 meters Scaled)
 JW0024
 JW0024_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD353915(NAD 83)
 JW0024
 JW0024                          SUPERSEDED SURVEY CONTROL
 JW0024
 JW0024  NGVD 29 (??/??/92)  138.715  (m)          455.10   (f) ADJ UNCH    1 2
 JW0024
 JW0024.Superseded values are not recommended for survey control.
 JW0024
 JW0024.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0024.See file dsdata.pdf to determine how the superseded data were derived.
 JW0024
 JW0024_MARKER: DB = BENCH MARK DISK
 JW0024_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0024_SP_SET: SIGNAL TOWER
 JW0024_STAMPING: F 43 1941
 JW0024_MARK LOGO: CGS
 JW0024_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0024
 JW0024  HISTORY     - Date     Condition        Report By
 JW0024  HISTORY     - 1941     MONUMENTED       CGS
 JW0024
 JW0024                          STATION DESCRIPTION
 JW0024
 JW0024'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0024'6.8 MI SW FROM HANCOCK.
 JW0024'6.8 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JW0024'THE STATION AT HANCOCK, 16 RAILS SOUTHWEST OF MILE-POST NO. 122,
 JW0024'SET IN THE WEST CORNER OF SIGNAL TOWER NO. A-1223, 7 FEET SOUTHEAST
 JW0024'OF THE SOUTHEAST RAIL OF THE TRACK, A STANDARD DISK STAMPED F-43
 JW0024'1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0733 ***********************************************************************
 JV0733  DESIGNATION -  F 44
 JV0733  PID         -  JV0733
 JV0733  STATE/COUNTY-  MD/HOWARD
 JV0733  COUNTRY     -  US
 JV0733  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0733
 JV0733                         *CURRENT SURVEY CONTROL
 JV0733  ______________________________________________________________________
 JV0733* NAD 83(1986) POSITION- 39 18 59.     (N) 076 48 53.     (W)   SCALED
 JV0733* NAVD 88 ORTHO HEIGHT -    69.704 (meters)      228.69  (feet) ADJUSTED
 JV0733  ______________________________________________________________________
 JV0733  GEOID HEIGHT    -        -32.170 (meters)                     GEOID18
 JV0733  DYNAMIC HEIGHT  -         69.667 (meters)      228.57  (feet) COMP
 JV0733  MODELED GRAVITY -    980,101.2   (mgal)                       NAVD 88
 JV0733
 JV0733  VERT ORDER      -  FIRST     CLASS II
 JV0733
 JV0733.The horizontal coordinates were scaled from a map and have
 JV0733.an estimated accuracy of +/- 6 seconds.
 JV0733
 JV0733.The orthometric height was determined by differential leveling and
 JV0733.adjusted by the NATIONAL GEODETIC SURVEY
 JV0733.in June 1991.
 JV0733
 JV0733.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0733.GEOID18 height accuracy estimate available here.
 JV0733
 JV0733.Click photographs - Photos may exist for this station.
 JV0733
 JV0733.The dynamic height is computed by dividing the NAVD 88
 JV0733.geopotential number by the normal gravity value computed on the
 JV0733.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0733.degrees latitude (g = 980.6199 gals.).
 JV0733
 JV0733.The modeled gravity was interpolated from observed gravity values.
 JV0733
 JV0733;                    North         East    Units  Estimated Accuracy
 JV0733;SPC MD       -   183,150.      415,980.      MT  (+/- 180 meters Scaled)
 JV0733
 JV0733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ435534(NAD 83)
 JV0733
 JV0733                          SUPERSEDED SURVEY CONTROL
 JV0733
 JV0733  NGVD 29 (11/26/84)   69.921  (m)          229.40   (f) ADJUSTED    1 2
 JV0733
 JV0733.Superseded values are not recommended for survey control.
 JV0733
 JV0733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0733.See file dsdata.pdf to determine how the superseded data were derived.
 JV0733
 JV0733_MARKER: DB = BENCH MARK DISK
 JV0733_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0733_SP_SET: BRIDGE
 JV0733_STAMPING: F 44 1941
 JV0733_MARK LOGO: CGS
 JV0733_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0733
 JV0733  HISTORY     - Date     Condition        Report By
 JV0733  HISTORY     - 1941     MONUMENTED       CGS
 JV0733  HISTORY     - 1984     MARK NOT FOUND   LOCSUR
 JV0733
 JV0733                          STATION DESCRIPTION
 JV0733
 JV0733'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0733'5.4 MI NW FROM ELLICOTT CITY.
 JV0733'ABOUT 5.4 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0733'FROM THE STATION AT ELLICOTT CITY, HOWARD COUNTY, AT ALBERTON, AT
 JV0733'BRIDGE 17 A OVER PATAPSCO RIVER, IN THE TOP OF THE EAST ABUTMENT,
 JV0733'1.4 FEET SOUTH OF THE NORTH END, AND 6.7 FEET NORTH OF THE NORTH
 JV0733'RAIL OF THE WEST-BOUND TRACK.  A STANDARD DISK, STAMPED F 44
 JV0733'1941.
 JV0733
 JV0733                          STATION RECOVERY (1984)
 JV0733
 JV0733'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1984
 JV0733'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0759 ***********************************************************************
 JV0759  DESIGNATION -  F 45 RESET
 JV0759  PID         -  JV0759
 JV0759  STATE/COUNTY-  MD/CARROLL
 JV0759  COUNTRY     -  US
 JV0759  USGS QUAD   -  FINKSBURG (2016)
 JV0759
 JV0759                         *CURRENT SURVEY CONTROL
 JV0759  ______________________________________________________________________
 JV0759* NAD 83(1986) POSITION- 39 26 56.6    (N) 076 55 27.9    (W)   HD_HELD2
 JV0759* NAVD 88 ORTHO HEIGHT -   183.783 (meters)      602.96  (feet) ADJUSTED
 JV0759  ______________________________________________________________________
 JV0759  GEOID HEIGHT    -        -32.015 (meters)                     GEOID18
 JV0759  DYNAMIC HEIGHT  -        183.688 (meters)      602.65  (feet) COMP
 JV0759  MODELED GRAVITY -    980,103.9   (mgal)                       NAVD 88
 JV0759
 JV0759  VERT ORDER      -  SECOND    CLASS II
 JV0759
 JV0759.The horizontal coordinates were established by autonomous hand held GPS
 JV0759.observations and have an estimated accuracy of +/- 10 meters.
 JV0759
 JV0759.The orthometric height was determined by differential leveling and
 JV0759.adjusted by the NATIONAL GEODETIC SURVEY
 JV0759.in June 2012.
 JV0759
 JV0759.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0759.GEOID18 height accuracy estimate available here.
 JV0759
 JV0759.Click photographs - Photos may exist for this station.
 JV0759
 JV0759.The dynamic height is computed by dividing the NAVD 88
 JV0759.geopotential number by the normal gravity value computed on the
 JV0759.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0759.degrees latitude (g = 980.6199 gals.).
 JV0759
 JV0759.The modeled gravity was interpolated from observed gravity values.
 JV0759
 JV0759;                    North         East    Units  Estimated Accuracy
 JV0759;SPC MD       -   197,861.      406,506.      MT  (+/- 10 meters HH2 GPS)
 JV0759
 JV0759_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3441368377(NAD 83)
 JV0759
 JV0759                          SUPERSEDED SURVEY CONTROL
 JV0759
 JV0759  NAVD 88 (11/18/05)  183.812  (m)          603.06   (f) SUPERSEDED  3 0
 JV0759  NGVD 29 (??/??/??)  183.95   (m)          603.5    (f) RESET       3  
 JV0759
 JV0759.Superseded values are not recommended for survey control.
 JV0759
 JV0759.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0759.See file dsdata.pdf to determine how the superseded data were derived.
 JV0759
 JV0759_MARKER: DB = BENCH MARK DISK
 JV0759_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0759_SP_SET: WELL COVER
 JV0759_STAMPING: F 45 RESET 1961
 JV0759_MARK LOGO: CGS
 JV0759_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0759_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0759+SATELLITE: SATELLITE OBSERVATIONS - June 16, 2015
 JV0759
 JV0759  HISTORY     - Date     Condition        Report By
 JV0759  HISTORY     - 1961     MONUMENTED       CGS
 JV0759  HISTORY     - 20080125 GOOD             MDSHA
 JV0759  HISTORY     - 20150616 GOOD             USPSQD
 JV0759
 JV0759                          STATION DESCRIPTION
 JV0759
 JV0759'DESCRIBED BY COAST AND GEODETIC SURVEY 1961
 JV0759'1.2 MI S FROM GAMBER.
 JV0759'MARK IS 1.2 MILES SOUTH ALONG ROUTE MD-32 FROM THE JUNCTION OF
 JV0759'ROUTES MD-32 AND MD-91 AT GAMBER, CARROLL COUNTY, AT THE INTERSECTION
 JV0759'OF MD-32 AND BOLLINGER MILL ROAD.  IT IS CEMENTED IN A DRILL HOLE
 JV0759'IN THE NORTHWEST CORNER OF A FOUR-FEET SQUARE CONCRETE WELL
 JV0759'COVER 58 FEET EAST OF THE CENTERLINE OF MD-32, 67.5 FEET SOUTHWEST
 JV0759'OF THE SOUTHEAST CORNER OF THE HOUSE, 36.5 FEET NORTHEAST OF
 JV0759'A THREE-FEET DIAMETER LOCUST TREE AND 85 FEET NORTHEAST OF THE
 JV0759'POINT OF LAND IN THE INTERSECTION, ON PROPERTY OF MR. L. A. PIERCE.
 JV0759'MARK IS A STANDARD DISK STAMPED F 45 RESET 1961.
 JV0759
 JV0759                          STATION RECOVERY (2008)
 JV0759
 JV0759'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV0759'RECOVERED AS DESCRIBED.
 JV0759
 JV0759                          STATION RECOVERY (2015)
 JV0759
 JV0759'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV0759'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2151 ***********************************************************************
 JV2151  DESIGNATION -  F 46
 JV2151  PID         -  JV2151
 JV2151  STATE/COUNTY-  MD/FREDERICK
 JV2151  COUNTRY     -  US
 JV2151  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2151
 JV2151                         *CURRENT SURVEY CONTROL
 JV2151  ______________________________________________________________________
 JV2151* NAD 83(1986) POSITION- 39 21 52.     (N) 077 24 39.     (W)   SCALED
 JV2151* NAVD 88 ORTHO HEIGHT -    77.936 (meters)      255.70  (feet) ADJUSTED
 JV2151  ______________________________________________________________________
 JV2151  GEOID HEIGHT    -        -32.617 (meters)                     GEOID18
 JV2151  DYNAMIC HEIGHT  -         77.894 (meters)      255.56  (feet) COMP
 JV2151  MODELED GRAVITY -    980,087.2   (mgal)                       NAVD 88
 JV2151
 JV2151  VERT ORDER      -  FIRST     CLASS II
 JV2151
 JV2151.The horizontal coordinates were scaled from a map and have
 JV2151.an estimated accuracy of +/- 6 seconds.
 JV2151
 JV2151.The orthometric height was determined by differential leveling and
 JV2151.adjusted by the NATIONAL GEODETIC SURVEY
 JV2151.in June 1991.
 JV2151
 JV2151.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2151.GEOID18 height accuracy estimate available here.
 JV2151
 JV2151.Click photographs - Photos may exist for this station.
 JV2151
 JV2151.The dynamic height is computed by dividing the NAVD 88
 JV2151.geopotential number by the normal gravity value computed on the
 JV2151.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2151.degrees latitude (g = 980.6199 gals.).
 JV2151
 JV2151.The modeled gravity was interpolated from observed gravity values.
 JV2151
 JV2151;                    North         East    Units  Estimated Accuracy
 JV2151;SPC MD       -   188,550.      364,600.      MT  (+/- 180 meters Scaled)
 JV2151
 JV2151_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ923599(NAD 83)
 JV2151
 JV2151                          SUPERSEDED SURVEY CONTROL
 JV2151
 JV2151  NGVD 29 (11/26/84)   78.158  (m)          256.42   (f) ADJUSTED    1 2
 JV2151
 JV2151.Superseded values are not recommended for survey control.
 JV2151
 JV2151.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2151.See file dsdata.pdf to determine how the superseded data were derived.
 JV2151
 JV2151_MARKER: DB = BENCH MARK DISK
 JV2151_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2151_STAMPING: F 46 1941
 JV2151_MARK LOGO: CGS
 JV2151_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2151+STABILITY: SURFACE MOTION
 JV2151
 JV2151  HISTORY     - Date     Condition        Report By
 JV2151  HISTORY     - 1941     MONUMENTED       CGS
 JV2151
 JV2151                          STATION DESCRIPTION
 JV2151
 JV2151'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2151'1.2 MI W FROM FREDERICK JUNCTION.
 JV2151'ABOUT 1.2 MILES WEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV2151'THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, 81.0 FEET
 JV2151'NORTHEAST OF THE FOURTEENTH POLE WEST OF MILEPOST 59, 29.0 FEET
 JV2151'NORTHEAST OF THE CENTER OF A FARM-ROAD CROSSING, 17.9 FEET NORTH
 JV2151'OF THE NORTH RAIL OF THE WEST-BOUND TRACK, AND 2.5 FEET WEST OF
 JV2151'A WHITE WOODEN POST STENCILED U.S.B.M.  A STANDARD DISK, STAMPED
 JV2151'F 46 1941 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0662 ***********************************************************************
 HV0662  DESIGNATION -  F 48
 HV0662  PID         -  HV0662
 HV0662  STATE/COUNTY-  MD/ST MARYS
 HV0662  COUNTRY     -  US
 HV0662  USGS QUAD   -  ROCK POINT (2016)
 HV0662
 HV0662                         *CURRENT SURVEY CONTROL
 HV0662  ______________________________________________________________________
 HV0662* NAD 83(1986) POSITION- 38 15 57.     (N) 076 46 05.     (W)   SCALED
 HV0662* NAVD 88 ORTHO HEIGHT -     8.656 (meters)       28.40  (feet) ADJUSTED
 HV0662  ______________________________________________________________________
 HV0662  GEOID HEIGHT    -        -33.716 (meters)                     GEOID18
 HV0662  DYNAMIC HEIGHT  -          8.651 (meters)       28.38  (feet) COMP
 HV0662  MODELED GRAVITY -    980,023.7   (mgal)                       NAVD 88
 HV0662
 HV0662  VERT ORDER      -  SECOND    CLASS 0
 HV0662
 HV0662.The horizontal coordinates were scaled from a map and have
 HV0662.an estimated accuracy of +/- 6 seconds.
 HV0662
 HV0662.The orthometric height was determined by differential leveling and
 HV0662.adjusted by the NATIONAL GEODETIC SURVEY
 HV0662.in June 1991.
 HV0662
 HV0662.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0662.GEOID18 height accuracy estimate available here.
 HV0662
 HV0662.Click photographs - Photos may exist for this station.
 HV0662
 HV0662.The dynamic height is computed by dividing the NAVD 88
 HV0662.geopotential number by the normal gravity value computed on the
 HV0662.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0662.degrees latitude (g = 980.6199 gals.).
 HV0662
 HV0662.The modeled gravity was interpolated from observed gravity values.
 HV0662
 HV0662;                    North         East    Units  Estimated Accuracy
 HV0662;SPC MD       -    66,540.      420,300.      MT  (+/- 180 meters Scaled)
 HV0662
 HV0662_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH453367(NAD 83)
 HV0662
 HV0662                          SUPERSEDED SURVEY CONTROL
 HV0662
 HV0662  NGVD 29 (11/26/84)    8.936  (m)           29.32   (f) ADJUSTED    2 0
 HV0662
 HV0662.Superseded values are not recommended for survey control.
 HV0662
 HV0662.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0662.See file dsdata.pdf to determine how the superseded data were derived.
 HV0662
 HV0662_MARKER: DB = BENCH MARK DISK
 HV0662_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0662_STAMPING: F 48 1942
 HV0662_MARK LOGO: CGS
 HV0662_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0662+STABILITY: SURFACE MOTION
 HV0662
 HV0662  HISTORY     - Date     Condition        Report By
 HV0662  HISTORY     - 1942     MONUMENTED       CGS
 HV0662
 HV0662                          STATION DESCRIPTION
 HV0662
 HV0662'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0662'9.5 MI S FROM CHAPTICO.
 HV0662'THIS MARK IS ABOUT 9.6 MILES SOUTH OF THE INTERSECTION AT CHAPTICO,
 HV0662'SAINT MARYS COUNTY, ABOUT 0.3 MILE NORTHWEST OF THE INTERSECTION
 HV0662'OF HIGHWAYS 242 AND 470, AT AVENUE, IN THE NORTHEAST CORNER OF
 HV0662'THE LAWN, 39 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 23
 HV0662'FEET NORTH OF THE CENTER LINE OF THE DRIVEWAY TO THE HOUSE,
 HV0662'19 FEET SOUTHWEST OF A POWER POLE, JUST SOUTH OF A HEDGE ROW, AND
 HV0662'IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST ABOUT FLUSH
 HV0662'WITH THE SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0692 ***********************************************************************
 HV0692  DESIGNATION -  F 49
 HV0692  PID         -  HV0692
 HV0692  STATE/COUNTY-  MD/ST MARYS
 HV0692  COUNTRY     -  US
 HV0692  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0692
 HV0692                         *CURRENT SURVEY CONTROL
 HV0692  ______________________________________________________________________
 HV0692* NAD 83(1986) POSITION- 38 28 29.     (N) 076 47 41.     (W)   SCALED
 HV0692* NAVD 88 ORTHO HEIGHT -    51.176 (meters)      167.90  (feet) ADJUSTED
 HV0692  ______________________________________________________________________
 HV0692  GEOID HEIGHT    -        -33.543 (meters)                     GEOID18
 HV0692  DYNAMIC HEIGHT  -         51.144 (meters)      167.79  (feet) COMP
 HV0692  MODELED GRAVITY -    980,015.0   (mgal)                       NAVD 88
 HV0692
 HV0692  VERT ORDER      -  SECOND    CLASS 0
 HV0692
 HV0692.The horizontal coordinates were scaled from a map and have
 HV0692.an estimated accuracy of +/- 6 seconds.
 HV0692
 HV0692.The orthometric height was determined by differential leveling and
 HV0692.adjusted by the NATIONAL GEODETIC SURVEY
 HV0692.in June 1991.
 HV0692
 HV0692.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0692.GEOID18 height accuracy estimate available here.
 HV0692
 HV0692.Click photographs - Photos may exist for this station.
 HV0692
 HV0692.The dynamic height is computed by dividing the NAVD 88
 HV0692.geopotential number by the normal gravity value computed on the
 HV0692.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0692.degrees latitude (g = 980.6199 gals.).
 HV0692
 HV0692.The modeled gravity was interpolated from observed gravity values.
 HV0692
 HV0692;                    North         East    Units  Estimated Accuracy
 HV0692;SPC MD       -    89,720.      417,910.      MT  (+/- 180 meters Scaled)
 HV0692
 HV0692_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH434600(NAD 83)
 HV0692
 HV0692                          SUPERSEDED SURVEY CONTROL
 HV0692
 HV0692  NGVD 29 (11/26/84)   51.442  (m)          168.77   (f) ADJUSTED    2 0
 HV0692
 HV0692.Superseded values are not recommended for survey control.
 HV0692
 HV0692.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0692.See file dsdata.pdf to determine how the superseded data were derived.
 HV0692
 HV0692_MARKER: DB = BENCH MARK DISK
 HV0692_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0692_STAMPING: F 49 1942
 HV0692_MARK LOGO: CGS
 HV0692_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0692+STABILITY: SURFACE MOTION
 HV0692
 HV0692  HISTORY     - Date     Condition        Report By
 HV0692  HISTORY     - 1942     MONUMENTED       CGS
 HV0692
 HV0692                          STATION DESCRIPTION
 HV0692
 HV0692'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0692'1.1 MI W FROM NEW MARKET.
 HV0692'THIS MARK IS ALONG HIGHWAY NUMBER 6, ABOUT 1.1 MILES WEST OF THE
 HV0692'INTERSECTION AT NEW MARKET, SAINT MARYS COUNTY, 0.1 MILE EAST OF THE
 HV0692'CHARLES-SAINT MARYS COUNTY LINE, 33 FEET NORTH OF THE CENTER LINE
 HV0692'OF THE HIGHWAY, 13.6 FEET NORTH OF A WIRE RIGHT-OF-WAY FENCE,
 HV0692'IN THE SOUTHWEST CORNER OF AN OPEN FIELD, JUST EAST OF A RAIL
 HV0692'FENCE AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST
 HV0692'ABOUT 2 FEET FROM A WHITE WOODEN POST STENCILED USBM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0286 ***********************************************************************
 HU0286  DESIGNATION -  F 5
 HU0286  PID         -  HU0286
 HU0286  STATE/COUNTY-  MD/WORCESTER
 HU0286  COUNTRY     -  US
 HU0286  USGS QUAD   -  WHALEYVILLE (2016)
 HU0286
 HU0286                         *CURRENT SURVEY CONTROL
 HU0286  ______________________________________________________________________
 HU0286* NAD 83(1986) POSITION- 38 23 20.     (N) 075 17 10.     (W)   SCALED
 HU0286* NAVD 88 ORTHO HEIGHT -    10.478 (meters)       34.38  (feet) ADJUSTED
 HU0286  ______________________________________________________________________
 HU0286  GEOID HEIGHT    -        -35.927 (meters)                     GEOID18
 HU0286  DYNAMIC HEIGHT  -         10.471 (meters)       34.35  (feet) COMP
 HU0286  MODELED GRAVITY -    980,010.6   (mgal)                       NAVD 88
 HU0286
 HU0286  VERT ORDER      -  SECOND    CLASS 0
 HU0286
 HU0286.The horizontal coordinates were scaled from a map and have
 HU0286.an estimated accuracy of +/- 6 seconds.
 HU0286
 HU0286.The orthometric height was determined by differential leveling and
 HU0286.adjusted by the NATIONAL GEODETIC SURVEY
 HU0286.in June 1991.
 HU0286
 HU0286.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0286.GEOID18 height accuracy estimate available here.
 HU0286
 HU0286.Click photographs - Photos may exist for this station.
 HU0286
 HU0286.The dynamic height is computed by dividing the NAVD 88
 HU0286.geopotential number by the normal gravity value computed on the
 HU0286.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0286.degrees latitude (g = 980.6199 gals.).
 HU0286
 HU0286.The modeled gravity was interpolated from observed gravity values.
 HU0286
 HU0286;                    North         East    Units  Estimated Accuracy
 HU0286;SPC MD       -    81,580.      549,730.      MT  (+/- 180 meters Scaled)
 HU0286
 HU0286_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH750490(NAD 83)
 HU0286
 HU0286                          SUPERSEDED SURVEY CONTROL
 HU0286
 HU0286  NGVD 29 (11/26/84)   10.723  (m)           35.18   (f) ADJUSTED    2 0
 HU0286
 HU0286.Superseded values are not recommended for survey control.
 HU0286
 HU0286.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0286.See file dsdata.pdf to determine how the superseded data were derived.
 HU0286
 HU0286_MARKER: DB = BENCH MARK DISK
 HU0286_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0286_STAMPING: F 5 1935
 HU0286_MARK LOGO: CGS
 HU0286_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0286+STABILITY: SURFACE MOTION
 HU0286
 HU0286  HISTORY     - Date     Condition        Report By
 HU0286  HISTORY     - 1935     MONUMENTED       CGS
 HU0286  HISTORY     - 1942     GOOD             CGS
 HU0286  HISTORY     - 19900221 MARK NOT FOUND   NGS
 HU0286  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU0286
 HU0286                          STATION DESCRIPTION
 HU0286
 HU0286'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0286'2.3 MI W FROM ST MARTINS.
 HU0286'2.3 MILES WEST ALONG THE BALTIMORE AND EASTERN RAILROAD FROM THE
 HU0286'VILLAGE OF ST. MARTINS, WORCESTER COUNTY, ABOUT 700 FEET NORTH
 HU0286'OF STATION 175+50 OF U.S. HIGHWAY 213, ABOUT 450 FEET NORTH OF THE
 HU0286'W.F. BAKER 2-STORY WHITE FRAMEHOUSE IN 1942, 60.8 FEET EAST OF A
 HU0286'TELEPHONE POLE, 21.2 FEET NORTH OF THE CENTERLINE OF THE TRACK, 34
 HU0286'FEET WEST OF THE CENTERLINE OF A FIELD ROAD, NEAR A WHITE WOODEN
 HU0286'WITNESS POST, AND ABOUT 3 FEET HIGHER THAN THE TRACK.  A STANDARD
 HU0286'DISK, STAMPED F 5 1935 AND SET IN THE TOP OF A CONCRETE POST
 HU0286'PROJECTING 2 INCHES ABOVE GROUND.
 HU0286
 HU0286                          STATION RECOVERY (1990)
 HU0286
 HU0286'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0286'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THIS MARK.
 HU0286
 HU0286                          STATION RECOVERY (2003)
 HU0286
 HU0286'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0286'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0633 ***********************************************************************
 HV0633  DESIGNATION -  F 50 RESET 1950
 HV0633  PID         -  HV0633
 HV0633  STATE/COUNTY-  MD/CHARLES
 HV0633  COUNTRY     -  US
 HV0633  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV0633
 HV0633                         *CURRENT SURVEY CONTROL
 HV0633  ______________________________________________________________________
 HV0633* NAD 83(1986) POSITION- 38 18 58.     (N) 076 53 30.     (W)   SCALED
 HV0633* NAVD 88 ORTHO HEIGHT -     4.20  (meters)       13.8   (feet) RESET
 HV0633  ______________________________________________________________________
 HV0633  GEOID HEIGHT    -        -33.626 (meters)                     GEOID18
 HV0633  VERT ORDER      -  THIRD
 HV0633
 HV0633.The horizontal coordinates were scaled from a map and have
 HV0633.an estimated accuracy of +/- 6 seconds.
 HV0633
 HV0633.The orthometric height was computed from unverified reset data.
 HV0633
 HV0633.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0633.GEOID18 height accuracy estimate available here.
 HV0633
 HV0633.Click photographs - Photos may exist for this station.
 HV0633
 HV0633;                    North         East    Units  Estimated Accuracy
 HV0633;SPC MD       -    72,100.      409,470.      MT  (+/- 180 meters Scaled)
 HV0633
 HV0633_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH346425(NAD 83)
 HV0633
 HV0633                          SUPERSEDED SURVEY CONTROL
 HV0633
 HV0633  NGVD 29 (??/??/??)    4.46   (m)           14.6    (f) RESET       3  
 HV0633
 HV0633.Superseded values are not recommended for survey control.
 HV0633
 HV0633.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0633.See file dsdata.pdf to determine how the superseded data were derived.
 HV0633
 HV0633_MARKER: DB = BENCH MARK DISK
 HV0633_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0633_STAMPING: F 50 RESET 1950
 HV0633_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0633+STABILITY: SURFACE MOTION
 HV0633
 HV0633  HISTORY     - Date     Condition        Report By
 HV0633  HISTORY     - 1950     MONUMENTED       MDSRC
 HV0633  HISTORY     - 1968     MARK NOT FOUND   USGS
 HV0633
 HV0633                          STATION DESCRIPTION
 HV0633
 HV0633'DESCRIBED BY MD STATE ROADS COMM 1950
 HV0633'0.4 MI S FROM TOMPKINSVILLE.
 HV0633'0.4 MILE SOUTH ALONG STATE HIGHWAY 3 FROM THE ROAD JUNCTION AT
 HV0633'TOMPKINVILLE, CHARLES COUNTY, NEAR THE FRERE STORE AND TEXACO
 HV0633'SERVICE STATION, 87 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE
 HV0633'STORE, IN A PASTURE LOT, 6 FEET FROM A WHITE BOARD FENCE JUST
 HV0633'NORTH OF THE STORE, 10 FEET FROM A POLE, AND 48 FEET WEST OF
 HV0633'THE CENTERLINE OF THE HIGHWAY AT SURVEY STATION 334-48.  A STANDARD
 HV0633'DISK, STAMPED F 50 RESET 1950 AND SET IN THE TOP OF A CONCRETE
 HV0633'POST PROJECTING 6 INCHES ABOVE GROUND.
 HV0633
 HV0633                          STATION RECOVERY (1968)
 HV0633
 HV0633'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1968
 HV0633'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0271 ***********************************************************************
 HV0271  DESIGNATION -  F 51
 HV0271  PID         -  HV0271
 HV0271  STATE/COUNTY-  MD/DORCHESTER
 HV0271  COUNTRY     -  US
 HV0271  USGS QUAD   -  CAMBRIDGE (2016)
 HV0271
 HV0271                         *CURRENT SURVEY CONTROL
 HV0271  ______________________________________________________________________
 HV0271* NAD 83(1986) POSITION- 38 31 28.     (N) 076 07 13.     (W)   SCALED
 HV0271* NAVD 88 ORTHO HEIGHT -     2.347 (meters)        7.70  (feet) ADJUSTED
 HV0271  ______________________________________________________________________
 HV0271  GEOID HEIGHT    -        -35.035 (meters)                     GEOID18
 HV0271  DYNAMIC HEIGHT  -          2.346 (meters)        7.70  (feet) COMP
 HV0271  MODELED GRAVITY -    980,014.2   (mgal)                       NAVD 88
 HV0271
 HV0271  VERT ORDER      -  SECOND    CLASS 0
 HV0271
 HV0271.The horizontal coordinates were scaled from a map and have
 HV0271.an estimated accuracy of +/- 6 seconds.
 HV0271
 HV0271.The orthometric height was determined by differential leveling and
 HV0271.adjusted by the NATIONAL GEODETIC SURVEY
 HV0271.in June 1991.
 HV0271
 HV0271.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0271.GEOID18 height accuracy estimate available here.
 HV0271
 HV0271.Click photographs - Photos may exist for this station.
 HV0271
 HV0271.The dynamic height is computed by dividing the NAVD 88
 HV0271.geopotential number by the normal gravity value computed on the
 HV0271.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0271.degrees latitude (g = 980.6199 gals.).
 HV0271
 HV0271.The modeled gravity was interpolated from observed gravity values.
 HV0271
 HV0271;                    North         East    Units  Estimated Accuracy
 HV0271;SPC MD       -    95,590.      476,710.      MT  (+/- 180 meters Scaled)
 HV0271
 HV0271_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH023646(NAD 83)
 HV0271
 HV0271                          SUPERSEDED SURVEY CONTROL
 HV0271
 HV0271  NGVD 29 (02/24/95)    2.579  (m)            8.46   (f) ADJUSTED    2 0
 HV0271  NGVD 29 (11/26/84)    2.586  (m)            8.48   (f) SUPERSEDED  2 0
 HV0271
 HV0271.Superseded values are not recommended for survey control.
 HV0271
 HV0271.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0271.See file dsdata.pdf to determine how the superseded data were derived.
 HV0271
 HV0271_MARKER: DB = BENCH MARK DISK
 HV0271_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0271_STAMPING: F 51 1942
 HV0271_MARK LOGO: CGS
 HV0271_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0271+STABILITY: SURFACE MOTION
 HV0271
 HV0271  HISTORY     - Date     Condition        Report By
 HV0271  HISTORY     - 1942     MONUMENTED       CGS
 HV0271  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0271
 HV0271                          STATION DESCRIPTION
 HV0271
 HV0271'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0271'4.1 MI SW FROM CAMBRIDGE.
 HV0271'THIS MARK IS ABOUT 4.1 MILES SOUTHWEST ALONG HIGHWAY 16 FROM THE
 HV0271'INTERSECTION OF RACE AND WASHINGTON STREETS IN CAMBRIDGE, DORCHESTER
 HV0271'COUNTY, AT A DIRT ROAD RUNNING NORTHWEST FROM THE HIGHWAY TO A
 HV0271'FARM HOUSE, 27 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY
 HV0271'13.5 FEET SOUTHWEST OF THE CENTER LINE OF THE DIRT ROAD, ABOUT 2
 HV0271'FEET EAST OF A WIRE FENCE ROW, AND IS A STANDARD DISK SET IN
 HV0271'THE TOP OF A CONCRETE POST ABOUT 3 FEET FROM A REFERENCE POST.
 HV0271
 HV0271                          STATION RECOVERY (1971)
 HV0271
 HV0271'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0271'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0468 ***********************************************************************
 HV0468  DESIGNATION -  F 52
 HV0468  PID         -  HV0468
 HV0468  STATE/COUNTY-  MD/DORCHESTER
 HV0468  COUNTRY     -  US
 HV0468  USGS QUAD   -  GOLDEN HILL (2016)
 HV0468
 HV0468                         *CURRENT SURVEY CONTROL
 HV0468  ______________________________________________________________________
 HV0468* NAD 83(1986) POSITION- 38 22 55.1    (N) 076 10 05.0    (W)   HD_HELD2
 HV0468* NAVD 88 ORTHO HEIGHT -     0.347 (meters)        1.14  (feet) ADJUSTED
 HV0468  ______________________________________________________________________
 HV0468  GEOID HEIGHT    -        -35.172 (meters)                     GEOID18
 HV0468  DYNAMIC HEIGHT  -          0.347 (meters)        1.14  (feet) COMP
 HV0468  MODELED GRAVITY -    980,000.2   (mgal)                       NAVD 88
 HV0468
 HV0468  VERT ORDER      -  SECOND    CLASS 0
 HV0468
 HV0468.The horizontal coordinates were established by autonomous hand held GPS
 HV0468.observations and have an estimated accuracy of +/- 10 meters.
 HV0468
 HV0468.The orthometric height was determined by differential leveling and
 HV0468.adjusted by the NATIONAL GEODETIC SURVEY
 HV0468.in June 1991.
 HV0468
 HV0468.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0468.GEOID18 height accuracy estimate available here.
 HV0468
 HV0468.Click photographs - Photos may exist for this station.
 HV0468
 HV0468.The dynamic height is computed by dividing the NAVD 88
 HV0468.geopotential number by the normal gravity value computed on the
 HV0468.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0468.degrees latitude (g = 980.6199 gals.).
 HV0468
 HV0468.The modeled gravity was interpolated from observed gravity values.
 HV0468
 HV0468;                    North         East    Units  Estimated Accuracy
 HV0468;SPC MD       -    79,733.      472,689.      MT  (+/- 10 meters HH2 GPS)
 HV0468
 HV0468_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9798048842(NAD 83)
 HV0468
 HV0468                          SUPERSEDED SURVEY CONTROL
 HV0468
 HV0468  NGVD 29 (11/26/84)    0.570  (m)            1.87   (f) ADJUSTED    2 0
 HV0468
 HV0468.Superseded values are not recommended for survey control.
 HV0468
 HV0468.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0468.See file dsdata.pdf to determine how the superseded data were derived.
 HV0468
 HV0468_MARKER: DB = BENCH MARK DISK
 HV0468_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0468_STAMPING: F 52 1942
 HV0468_MARK LOGO: CGS
 HV0468_PROJECTION: RECESSED 10 CENTIMETERS
 HV0468_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0468+STABILITY: SURFACE MOTION
 HV0468_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0468+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2014
 HV0468
 HV0468  HISTORY     - Date     Condition        Report By
 HV0468  HISTORY     - 1942     MONUMENTED       CGS
 HV0468  HISTORY     - 20140328 GOOD             ARCSHE
 HV0468
 HV0468                          STATION DESCRIPTION
 HV0468
 HV0468'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0468'3.9 MI SE FROM GOLDEN HILL.
 HV0468'THIS MARK IS ALONG HIGHWAY 336, ABOUT 3.9 MILES SOUTHEAST OF
 HV0468'THE POST OFFICE AT GOLDEN HILL, DORCHESTER COUNTY, AT A
 HV0468'2-STORY YELLOW HOUSE, AT THE DRIVEWAY ENTRANCE, 30 FEET SOUTH
 HV0468'WEST OF THE CENTER LINE OF THE HIGHWAY, 22 FEET NORTHWEST OF
 HV0468'THE NORTHWEST CORNER OF A SMALL BARN, 11 FEET NORTHWEST OF THE
 HV0468'CENTER LINE OF THE DRIVEWAY, 6 FEET NORTHWEST OF THE NORTHWEST
 HV0468'GATE POST, AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE
 HV0468'POST JUST INSIDE THE YARD FENCE.
 HV0468
 HV0468                          STATION RECOVERY (2014)
 HV0468
 HV0468'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0468'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3365 ***********************************************************************
 JV3365  DESIGNATION -  F 54
 JV3365  PID         -  JV3365
 JV3365  STATE/COUNTY-  MD/WASHINGTON
 JV3365  COUNTRY     -  US
 JV3365  USGS QUAD   -  HAGERSTOWN (2016)
 JV3365
 JV3365                         *CURRENT SURVEY CONTROL
 JV3365  ______________________________________________________________________
 JV3365* NAD 83(1986) POSITION- 39 41 17.     (N) 077 38 21.     (W)   SCALED
 JV3365* NAVD 88 ORTHO HEIGHT -   160.677 (meters)      527.15  (feet) ADJUSTED
 JV3365  ______________________________________________________________________
 JV3365  GEOID HEIGHT    -        -34.048 (meters)                     GEOID18
 JV3365  DYNAMIC HEIGHT  -        160.584 (meters)      526.85  (feet) COMP
 JV3365  MODELED GRAVITY -    980,042.7   (mgal)                       NAVD 88
 JV3365
 JV3365  VERT ORDER      -  SECOND    CLASS 0
 JV3365
 JV3365.The horizontal coordinates were scaled from a map and have
 JV3365.an estimated accuracy of +/- 6 seconds.
 JV3365
 JV3365.The orthometric height was determined by differential leveling and
 JV3365.adjusted by the NATIONAL GEODETIC SURVEY
 JV3365.in June 1991.
 JV3365
 JV3365.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3365.GEOID18 height accuracy estimate available here.
 JV3365
 JV3365.Click photographs - Photos may exist for this station.
 JV3365
 JV3365.The dynamic height is computed by dividing the NAVD 88
 JV3365.geopotential number by the normal gravity value computed on the
 JV3365.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3365.degrees latitude (g = 980.6199 gals.).
 JV3365
 JV3365.The modeled gravity was interpolated from observed gravity values.
 JV3365
 JV3365;                    North         East    Units  Estimated Accuracy
 JV3365;SPC MD       -   224,590.      345,170.      MT  (+/- 180 meters Scaled)
 JV3365
 JV3365_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ736964(NAD 83)
 JV3365
 JV3365                          SUPERSEDED SURVEY CONTROL
 JV3365
 JV3365  NGVD 29 (11/26/84)  160.863  (m)          527.76   (f) ADJUSTED    2 0
 JV3365
 JV3365.Superseded values are not recommended for survey control.
 JV3365
 JV3365.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3365.See file dsdata.pdf to determine how the superseded data were derived.
 JV3365
 JV3365_MARKER: DB = BENCH MARK DISK
 JV3365_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3365_SP_SET: BRIDGE
 JV3365_STAMPING: F 54 1942
 JV3365_MARK LOGO: CGS
 JV3365_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3365
 JV3365  HISTORY     - Date     Condition        Report By
 JV3365  HISTORY     - 1942     MONUMENTED       CGS
 JV3365  HISTORY     - 1962     GOOD             CGS
 JV3365  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3365
 JV3365                          STATION DESCRIPTION
 JV3365
 JV3365'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3365'6.5 MI NE FROM HAGERSTOWN.
 JV3365'6.5 MILES NORTHEAST ALONG STATE HIGHWAY 60 FROM THE COURTHOUSE
 JV3365'AT HAGERSTOWN, WASHINGTON COUNTY, IN THE WEST END OF THE SOUTH
 JV3365'SIDEWALK OF THE CONCRETE BRIDGE OVER THE LITTLE ANTIETAM CREEK,
 JV3365'17 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY, AND 0.5 FOOT NORTH
 JV3365'OF THE SOUTH PARAPET.  A STANDARD DISK, STAMPED F 54 1942.
 JV3365
 JV3365                          STATION RECOVERY (1962)
 JV3365
 JV3365'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962
 JV3365'RECOVERED IN GOOD CONDITION.
 JV3365
 JV3365                          STATION RECOVERY (1998)
 JV3365
 JV3365'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3365'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  IT APPEARS THE
 JV3365'STATION WAS DESTROYED BY THE CONSTRUCTION OF A NEW BRIDGE OVER
 JV3365'ANTEITAM CREEK IN 1988.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0391 ***********************************************************************
 HU0391  DESIGNATION -  F 56
 HU0391  PID         -  HU0391
 HU0391  STATE/COUNTY-  MD/WORCESTER
 HU0391  COUNTRY     -  US
 HU0391  USGS QUAD   -  BERLIN (2016)
 HU0391
 HU0391                         *CURRENT SURVEY CONTROL
 HU0391  ______________________________________________________________________
 HU0391* NAD 83(1986) POSITION- 38 16 16.     (N) 075 09 25.     (W)   SCALED
 HU0391* NAVD 88 ORTHO HEIGHT -     2.694 (meters)        8.84  (feet) ADJUSTED
 HU0391  ______________________________________________________________________
 HU0391  GEOID HEIGHT    -        -36.120 (meters)                     GEOID18
 HU0391  DYNAMIC HEIGHT  -          2.692 (meters)        8.83  (feet) COMP
 HU0391  MODELED GRAVITY -    979,999.9   (mgal)                       NAVD 88
 HU0391
 HU0391  VERT ORDER      -  SECOND    CLASS 0
 HU0391
 HU0391.The horizontal coordinates were scaled from a map and have
 HU0391.an estimated accuracy of +/- 6 seconds.
 HU0391
 HU0391.The orthometric height was determined by differential leveling and
 HU0391.adjusted by the NATIONAL GEODETIC SURVEY
 HU0391.in June 1991.
 HU0391
 HU0391.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0391.GEOID18 height accuracy estimate available here.
 HU0391
 HU0391.Click photographs - Photos may exist for this station.
 HU0391
 HU0391.The dynamic height is computed by dividing the NAVD 88
 HU0391.geopotential number by the normal gravity value computed on the
 HU0391.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0391.degrees latitude (g = 980.6199 gals.).
 HU0391
 HU0391.The modeled gravity was interpolated from observed gravity values.
 HU0391
 HU0391;                    North         East    Units  Estimated Accuracy
 HU0391;SPC MD       -    68,720.      561,270.      MT  (+/- 180 meters Scaled)
 HU0391
 HU0391_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH862359(NAD 83)
 HU0391
 HU0391                          SUPERSEDED SURVEY CONTROL
 HU0391
 HU0391  NGVD 29 (11/26/84)    2.943  (m)            9.66   (f) ADJUSTED    2 0
 HU0391
 HU0391.Superseded values are not recommended for survey control.
 HU0391
 HU0391.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0391.See file dsdata.pdf to determine how the superseded data were derived.
 HU0391
 HU0391_MARKER: DB = BENCH MARK DISK
 HU0391_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0391_STAMPING: F 56 1942
 HU0391_MARK LOGO: CGS
 HU0391_PROJECTION: PROJECTING 15 CENTIMETERS
 HU0391_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0391+STABILITY: SURFACE MOTION
 HU0391
 HU0391  HISTORY     - Date     Condition        Report By
 HU0391  HISTORY     - 1942     MONUMENTED       CGS
 HU0391  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU0391  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU0391
 HU0391                          STATION DESCRIPTION
 HU0391
 HU0391'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0391'6 MI SE FROM BERLIN.
 HU0391'4.7 MILES SOUTHEAST ALONG STATE HIGHWAY 376 FROM THE CALVIN B.
 HU0391'TAYLOR BANKING CO. AT BERLIN, THENCE 1.3 MILES SOUTH ALONG A GRAVEL
 HU0391'ROAD, AT THE JUNCTION OF A DIRT ROAD LEADING TO THE NEWBAY FERRY,
 HU0391'68.7 FEET EAST OF THE CENTERLINE OF THE GRAVEL ROAD, 23 FEET
 HU0391'NORTHEAST OF THE DIRT ROAD, AND 14.0 FEET SOUTH OF THE WEST CORNER
 HU0391'OF A ONE-STORY RED HOUSE.  A STANDARD DISK, STAMPED F 56 1942 AND
 HU0391'SET IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES ABOVE GROUND.
 HU0391'NOTE-- THE RED HOUSE MENTIONED IN THE PREVIOUS DESCRIPTION IS GONE
 HU0391'AND THE DIRT ROAD HAS BEEN WIDENED AND IMPROVED WITH BLACKTOP.
 HU0391
 HU0391                          STATION RECOVERY (2003)
 HU0391
 HU0391'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0391'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0709 ***********************************************************************
 HU0709  DESIGNATION -  F 58 RESET
 HU0709  PID         -  HU0709
 HU0709  STATE/COUNTY-  MD/WICOMICO
 HU0709  COUNTRY     -  US
 HU0709  USGS QUAD   -  SALISBURY (2016)
 HU0709
 HU0709                         *CURRENT SURVEY CONTROL
 HU0709  ______________________________________________________________________
 HU0709* NAD 83(1986) POSITION- 38 17 43.9    (N) 075 31 38.8    (W)   HD_HELD2
 HU0709* NAVD 88 ORTHO HEIGHT -    15.226 (meters)       49.95  (feet) ADJUSTED
 HU0709  ______________________________________________________________________
 HU0709  GEOID HEIGHT    -        -35.980 (meters)                     GEOID18
 HU0709  DYNAMIC HEIGHT  -         15.216 (meters)       49.92  (feet) COMP
 HU0709  MODELED GRAVITY -    979,997.9   (mgal)                       NAVD 88
 HU0709
 HU0709  VERT ORDER      -  SECOND    CLASS I
 HU0709
 HU0709.The horizontal coordinates were established by autonomous hand held GPS
 HU0709.observations and have an estimated accuracy of +/- 10 meters.
 HU0709
 HU0709.The orthometric height was determined by differential leveling and
 HU0709.adjusted by the NATIONAL GEODETIC SURVEY
 HU0709.in June 1991.
 HU0709
 HU0709.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0709.GEOID18 height accuracy estimate available here.
 HU0709
 HU0709.Click photographs - Photos may exist for this station.
 HU0709
 HU0709.The dynamic height is computed by dividing the NAVD 88
 HU0709.geopotential number by the normal gravity value computed on the
 HU0709.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0709.degrees latitude (g = 980.6199 gals.).
 HU0709
 HU0709.The modeled gravity was interpolated from observed gravity values.
 HU0709
 HU0709;                    North         East    Units  Estimated Accuracy
 HU0709;SPC MD       -    70,845.      528,812.      MT  (+/- 10 meters HH2 GPS)
 HU0709
 HU0709_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5387838736(NAD 83)
 HU0709
 HU0709                          SUPERSEDED SURVEY CONTROL
 HU0709
 HU0709  NGVD 29 (??/??/??)   15.46   (m)           50.7    (f) RESET       3  
 HU0709  NGVD 29 (06/12/91)   15.478  (m)           50.78   (f) ADJUSTED    2 1
 HU0709
 HU0709.Superseded values are not recommended for survey control.
 HU0709
 HU0709.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0709.See file dsdata.pdf to determine how the superseded data were derived.
 HU0709
 HU0709_MARKER: DB = BENCH MARK DISK
 HU0709_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0709_STAMPING: F 58 1942 RESET 1962
 HU0709_MARK LOGO: CGS
 HU0709_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0709_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0709+STABILITY: SURFACE MOTION
 HU0709_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0709+SATELLITE: SATELLITE OBSERVATIONS - April 11, 2001
 HU0709
 HU0709  HISTORY     - Date     Condition        Report By
 HU0709  HISTORY     - 1962     MONUMENTED       MDSRC
 HU0709  HISTORY     - 19900223 GOOD             NGS
 HU0709  HISTORY     - 20010411 GOOD             MDSHA
 HU0709  HISTORY     - 20050907 GOOD             GEOCAC
 HU0709
 HU0709                          STATION DESCRIPTION
 HU0709
 HU0709'DESCRIBED BY MD STATE ROADS COMM 1962
 HU0709'6.4 MI SE FROM SALISBURY.
 HU0709'6.4 MILES SE ALONG MARYLAND ROUTE 12 FROM THE PENNA. R.R.
 HU0709'UNDERPASS AT SALISBURY, AT THE T JUNCTION OF OLD SNOW HILL ROAD
 HU0709'(ALSO CALLED SPEARIN ROAD), 26.0 FEET E OF THE CENTERLINE OF
 HU0709'MARYLAND ROUTE 12, 160.0 FEET N OF THE CENTERLINE OF OLD SNOW
 HU0709'HILL ROAD, AND 1.0 FOOT W OF POLE 94A, AND SET IN A CONCRETE POST
 HU0709'FLUSH TO THE GROUND.
 HU0709
 HU0709                          STATION RECOVERY (1990)
 HU0709
 HU0709'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0709'7.7 KM (4.78 MI) SOUTHEASTERLY ALONG STATE HIGHWAY 12 FROM THE
 HU0709'JUNCTION OF JOHNSON ROAD IN SALISBURY, 48.0 M (157.48 FT) NORTH OF
 HU0709'THE CENTER OF SPEARIN ROAD, 29.7 NORTHWEST OF THE NORTHWEST CORNER OF
 HU0709'A HOUSE, 8.1 M (26.57 FT) EAST OF THE CENTERLINE OF THE HIGHWAY, 0.4
 HU0709'M (1.31 FT) WEST OF UTILITY POLE NUMBER 48900 90585, LEVEL WITH THE
 HU0709'HIGHWAY, AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND
 HU0709'SURFACE.
 HU0709
 HU0709                          STATION RECOVERY (2001)
 HU0709
 HU0709'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU0709'RECOVERED AS DESCRIBED.
 HU0709
 HU0709                          STATION RECOVERY (2005)
 HU0709
 HU0709'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0709'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0477 ***********************************************************************
 HU0477  DESIGNATION -  F 6
 HU0477  PID         -  HU0477
 HU0477  STATE/COUNTY-  MD/SOMERSET
 HU0477  COUNTRY     -  US
 HU0477  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0477
 HU0477                         *CURRENT SURVEY CONTROL
 HU0477  ______________________________________________________________________
 HU0477* NAD 83(1986) POSITION- 38 14 53.     (N) 075 40 34.     (W)   SCALED
 HU0477* NAVD 88 ORTHO HEIGHT -     5.977 (meters)       19.61  (feet) ADJUSTED
 HU0477  ______________________________________________________________________
 HU0477  GEOID HEIGHT    -        -35.955 (meters)                     GEOID18
 HU0477  DYNAMIC HEIGHT  -          5.974 (meters)       19.60  (feet) COMP
 HU0477  MODELED GRAVITY -    979,992.5   (mgal)                       NAVD 88
 HU0477
 HU0477  VERT ORDER      -  FIRST     CLASS I
 HU0477
 HU0477.The horizontal coordinates were scaled from a map and have
 HU0477.an estimated accuracy of +/- 6 seconds.
 HU0477
 HU0477.The orthometric height was determined by differential leveling and
 HU0477.adjusted by the NATIONAL GEODETIC SURVEY
 HU0477.in June 1991.
 HU0477
 HU0477.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0477.GEOID18 height accuracy estimate available here.
 HU0477
 HU0477.Click photographs - Photos may exist for this station.
 HU0477
 HU0477.The dynamic height is computed by dividing the NAVD 88
 HU0477.geopotential number by the normal gravity value computed on the
 HU0477.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0477.degrees latitude (g = 980.6199 gals.).
 HU0477
 HU0477.The modeled gravity was interpolated from observed gravity values.
 HU0477
 HU0477;                    North         East    Units  Estimated Accuracy
 HU0477;SPC MD       -    65,380.      515,890.      MT  (+/- 180 meters Scaled)
 HU0477
 HU0477_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH408335(NAD 83)
 HU0477
 HU0477                          SUPERSEDED SURVEY CONTROL
 HU0477
 HU0477  NGVD 29 (11/26/84)    6.234  (m)           20.45   (f) ADJUSTED    1 1
 HU0477
 HU0477.Superseded values are not recommended for survey control.
 HU0477
 HU0477.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0477.See file dsdata.pdf to determine how the superseded data were derived.
 HU0477
 HU0477_MARKER: DB = BENCH MARK DISK
 HU0477_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0477_STAMPING: F 6 1935
 HU0477_MARK LOGO: CGS
 HU0477_PROJECTION: PROJECTING 3 CENTIMETERS
 HU0477_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0477+STABILITY: SURFACE MOTION
 HU0477
 HU0477  HISTORY     - Date     Condition        Report By
 HU0477  HISTORY     - 1935     MONUMENTED       CGS
 HU0477  HISTORY     - 1972     GOOD             NGS
 HU0477
 HU0477                          STATION DESCRIPTION
 HU0477
 HU0477'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0477'3.3 MI NE FROM PRINCESS ANNE.
 HU0477'ABOUT 3.3 MILES NORTHEAST ALONG SOMERSET AVENUE AND U.S. HIGHWAY
 HU0477'13 FROM THE JUNCTION OF STATE HIGHWAY 363 AT PRINCESS ANNE, 0.4
 HU0477'MILE NORTHEAST OF MILEPOST 16 OF THE PENN CENTRAL RAILROAD, AT THE
 HU0477'CROSSING OF STATE HIGHWAY 529, 95 FEET SOUTHEAST OF THE CENTER
 HU0477'LINE OF THE NORTHBOUND LANE OF THE HIGHWAY, 47 1/2 FEET WEST OF
 HU0477'THE CENTER OF THE CROSSING OF STATE HIGHWAY 529 AND THE TRACK OF
 HU0477'THE PENN CENTRAL RAILROAD, 29.5 FEET NORTHWEST OF THE NORTHWEST
 HU0477'RAIL, 1.5 FEET NORTHEAST OF A METAL WITNESS POST, 1 FOOT SOUTHWEST
 HU0477'OF A METAL WITNESS POST, ABOUT LEVEL WITH THE HWY., SET IN THE
 HU0477'TOP OF A CONCRETE POST PROJECTING 1 INCH ABOVE THE LEVEL OF THE
 HU0477'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0650 ***********************************************************************
 HU0650  DESIGNATION -  F 60
 HU0650  PID         -  HU0650
 HU0650  STATE/COUNTY-  MD/DORCHESTER
 HU0650  COUNTRY     -  US
 HU0650  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU0650
 HU0650                         *CURRENT SURVEY CONTROL
 HU0650  ______________________________________________________________________
 HU0650* NAD 83(1986) POSITION- 38 24 45.     (N) 075 52 30.     (W)   SCALED
 HU0650* NAVD 88 ORTHO HEIGHT -     0.467 (meters)        1.53  (feet) ADJUSTED
 HU0650  ______________________________________________________________________
 HU0650  GEOID HEIGHT    -        -35.521 (meters)                     GEOID18
 HU0650  DYNAMIC HEIGHT  -          0.467 (meters)        1.53  (feet) COMP
 HU0650  MODELED GRAVITY -    980,010.1   (mgal)                       NAVD 88
 HU0650
 HU0650  VERT ORDER      -  SECOND    CLASS 0
 HU0650
 HU0650.The horizontal coordinates were scaled from a map and have
 HU0650.an estimated accuracy of +/- 6 seconds.
 HU0650
 HU0650.The orthometric height was determined by differential leveling and
 HU0650.adjusted by the NATIONAL GEODETIC SURVEY
 HU0650.in June 1991.
 HU0650
 HU0650.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0650.GEOID18 height accuracy estimate available here.
 HU0650
 HU0650.Click photographs - Photos may exist for this station.
 HU0650
 HU0650.The dynamic height is computed by dividing the NAVD 88
 HU0650.geopotential number by the normal gravity value computed on the
 HU0650.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0650.degrees latitude (g = 980.6199 gals.).
 HU0650
 HU0650.The modeled gravity was interpolated from observed gravity values.
 HU0650
 HU0650;                    North         East    Units  Estimated Accuracy
 HU0650;SPC MD       -    83,400.      498,250.      MT  (+/- 180 meters Scaled)
 HU0650
 HU0650_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH236519(NAD 83)
 HU0650
 HU0650                          SUPERSEDED SURVEY CONTROL
 HU0650
 HU0650  NGVD 29 (11/26/84)    0.706  (m)            2.32   (f) ADJUSTED    2 0
 HU0650
 HU0650.Superseded values are not recommended for survey control.
 HU0650
 HU0650.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0650.See file dsdata.pdf to determine how the superseded data were derived.
 HU0650
 HU0650_MARKER: DB = BENCH MARK DISK
 HU0650_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0650_STAMPING: F 60 1942
 HU0650_MARK LOGO: CGS
 HU0650_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0650+STABILITY: SURFACE MOTION
 HU0650
 HU0650  HISTORY     - Date     Condition        Report By
 HU0650  HISTORY     - 1942     MONUMENTED       CGS
 HU0650  HISTORY     - 1964     MARK NOT FOUND   CGS
 HU0650
 HU0650                          STATION DESCRIPTION
 HU0650
 HU0650'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0650'6.2 MI S FROM VIENNA.
 HU0650'THIS MARK IS ALONG A TAR AND GRAVEL ROAD ABOUT 6.25 MILES SOUTH OF
 HU0650'THE HIGH SCHOOL AT VIENNA, DORCHESTER COUNTY, IN A THICKLY
 HU0650'WOODED AREA, 27.5 FEET WEST OF THE CENTER LINE OF THE ROAD, 7.8
 HU0650'FEET SOUTH OF A 12-INCH WHITE OAK TREE, AND IS A STANDARD DISK
 HU0650'SET IN THE TOP OF A CONCRETE POST PROJECTING ABOUT 4 INCHES ABOVE
 HU0650'THE GROUND.
 HU0650
 HU0650                          STATION RECOVERY (1964)
 HU0650
 HU0650'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HU0650'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0293 ***********************************************************************
 HU0293  DESIGNATION -  F 61
 HU0293  PID         -  HU0293
 HU0293  STATE/COUNTY-  MD/WORCESTER
 HU0293  COUNTRY     -  US
 HU0293  USGS QUAD   -  SNOW HILL (2016)
 HU0293
 HU0293                         *CURRENT SURVEY CONTROL
 HU0293  ______________________________________________________________________
 HU0293* NAD 83(1986) POSITION- 38 11 17.8    (N) 075 28 51.4    (W)   HD_HELD2
 HU0293* NAVD 88 ORTHO HEIGHT -    14.955 (meters)       49.06  (feet) ADJUSTED
 HU0293  ______________________________________________________________________
 HU0293  GEOID HEIGHT    -        -36.169 (meters)                     GEOID18
 HU0293  DYNAMIC HEIGHT  -         14.946 (meters)       49.04  (feet) COMP
 HU0293  MODELED GRAVITY -    979,985.9   (mgal)                       NAVD 88
 HU0293
 HU0293  VERT ORDER      -  SECOND    CLASS 0
 HU0293
 HU0293.The horizontal coordinates were established by autonomous hand held GPS
 HU0293.observations and have an estimated accuracy of +/- 10 meters.
 HU0293
 HU0293.The orthometric height was determined by differential leveling and
 HU0293.adjusted by the NATIONAL GEODETIC SURVEY
 HU0293.in June 1991.
 HU0293
 HU0293.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0293.GEOID18 height accuracy estimate available here.
 HU0293
 HU0293.Click photographs - Photos may exist for this station.
 HU0293
 HU0293.The dynamic height is computed by dividing the NAVD 88
 HU0293.geopotential number by the normal gravity value computed on the
 HU0293.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0293.degrees latitude (g = 980.6199 gals.).
 HU0293
 HU0293.The modeled gravity was interpolated from observed gravity values.
 HU0293
 HU0293;                    North         East    Units  Estimated Accuracy
 HU0293;SPC MD       -    59,009.      533,077.      MT  (+/- 10 meters HH2 GPS)
 HU0293
 HU0293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5788226814(NAD 83)
 HU0293
 HU0293                          SUPERSEDED SURVEY CONTROL
 HU0293
 HU0293  NGVD 29 (11/26/84)   15.200  (m)           49.87   (f) ADJUSTED    2 0
 HU0293
 HU0293.Superseded values are not recommended for survey control.
 HU0293
 HU0293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0293.See file dsdata.pdf to determine how the superseded data were derived.
 HU0293
 HU0293_MARKER: DB = BENCH MARK DISK
 HU0293_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0293_STAMPING: F 61 1942
 HU0293_MARK LOGO: CGS
 HU0293_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0293+STABILITY: SURFACE MOTION
 HU0293_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0293+SATELLITE: SATELLITE OBSERVATIONS - October 08, 2006
 HU0293
 HU0293  HISTORY     - Date     Condition        Report By
 HU0293  HISTORY     - 1942     MONUMENTED       CGS
 HU0293  HISTORY     - 1962     GOOD             CGS
 HU0293  HISTORY     - 20061008 GOOD             USPSQD
 HU0293
 HU0293                          STATION DESCRIPTION
 HU0293
 HU0293'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0293'5.8 MI W FROM SNOW HILL.
 HU0293'2.8 MILES NORTHWEST ALONG STATE HIGHWAY 12 FROM THE DRAWBRIDGE
 HU0293'OVER POCOMOKE RIVER AT SNOW HILL, WORCESTER COUNTY, THENCE ABOUT
 HU0293'3.0 MILES WEST ALONG A DIRT ROAD, IN A WOODED AREA, ACROSS THE
 HU0293'ROAD FROM A SAND PIT, 18.5 FEET SOUTHEAST OF THE CENTER LINE OF
 HU0293'THE ROAD, 4.5 FEET EAST OF A BLAZED 12-INCH OAK TREE, AND 1.5 FEET
 HU0293'NORTHWEST OF A WOODEN WITNESS POST.  A STANDARD DISK, STAMPED
 HU0293'F 61 1942 AND SET IN THE TOP OF A CONCRETE POST PROJECTING ABOUT
 HU0293'5 INCHES ABOVE GROUND.  NOTE-- THE 12 INCH BLAZED OAK TREE IS GONE.
 HU0293
 HU0293                          STATION RECOVERY (2006)
 HU0293
 HU0293'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU0293'AS YOU FOLLOW DIRECTIONS REGARDING A DIRT ROAD, THE ROAD IS RED HOUSE
 HU0293'ROAD(BLACKTOP) FROM ROUTE 12, THEN FOLLOW SAND ROAD.  THERE IS A
 HU0293'CARSONITE MARKER WHICH IS BROKEN.  THERE IS NO LONGER A SAND PIT, BUT
 HU0293'A HOUSE ON EACH SIDE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0025 ***********************************************************************
 HV0025  DESIGNATION -  F 62
 HV0025  PID         -  HV0025
 HV0025  STATE/COUNTY-  MD/TALBOT
 HV0025  COUNTRY     -  US
 HV0025  USGS QUAD   -  TRAPPE (2016)
 HV0025
 HV0025                         *CURRENT SURVEY CONTROL
 HV0025  ______________________________________________________________________
 HV0025* NAD 83(1986) POSITION- 38 41 35.     (N) 076 04 49.     (W)   SCALED
 HV0025* NAVD 88 ORTHO HEIGHT -     6.738 (meters)       22.11  (feet) ADJUSTED
 HV0025  ______________________________________________________________________
 HV0025  GEOID HEIGHT    -        -34.804 (meters)                     GEOID18
 HV0025  DYNAMIC HEIGHT  -          6.733 (meters)       22.09  (feet) COMP
 HV0025  MODELED GRAVITY -    980,028.5   (mgal)                       NAVD 88
 HV0025
 HV0025  VERT ORDER      -  SECOND    CLASS 0
 HV0025
 HV0025.The horizontal coordinates were scaled from a map and have
 HV0025.an estimated accuracy of +/- 6 seconds.
 HV0025
 HV0025.The orthometric height was determined by differential leveling and
 HV0025.adjusted by the NATIONAL GEODETIC SURVEY
 HV0025.in June 1991.
 HV0025
 HV0025.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0025.GEOID18 height accuracy estimate available here.
 HV0025
 HV0025.Click photographs - Photos may exist for this station.
 HV0025
 HV0025.The dynamic height is computed by dividing the NAVD 88
 HV0025.geopotential number by the normal gravity value computed on the
 HV0025.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0025.degrees latitude (g = 980.6199 gals.).
 HV0025
 HV0025.The modeled gravity was interpolated from observed gravity values.
 HV0025
 HV0025;                    North         East    Units  Estimated Accuracy
 HV0025;SPC MD       -   114,340.      480,010.      MT  (+/- 180 meters Scaled)
 HV0025
 HV0025_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH060832(NAD 83)
 HV0025
 HV0025                          SUPERSEDED SURVEY CONTROL
 HV0025
 HV0025  NGVD 29 (11/26/84)    6.977  (m)           22.89   (f) ADJUSTED    2 0
 HV0025
 HV0025.Superseded values are not recommended for survey control.
 HV0025
 HV0025.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0025.See file dsdata.pdf to determine how the superseded data were derived.
 HV0025
 HV0025_MARKER: DB = BENCH MARK DISK
 HV0025_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0025_STAMPING: F 62 1942
 HV0025_MARK LOGO: CGS
 HV0025_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0025+STABILITY: SURFACE MOTION
 HV0025
 HV0025  HISTORY     - Date     Condition        Report By
 HV0025  HISTORY     - 1942     MONUMENTED       CGS
 HV0025  HISTORY     - 1982     MARK NOT FOUND   USGS
 HV0025
 HV0025                          STATION DESCRIPTION
 HV0025
 HV0025'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0025'1.1 MI W FROM HAMBLETON.
 HV0025'ALONG HAMBLETON-OXFORD ROAD, 84 FEET NORTHWEST OF CORNER OF WOOD AND
 HV0025'BRICK HOUSE, 20 FEET SOUTH OF CENTERLINE OF DIRT ROAD, 2 FEET EAST OF
 HV0025'FENCE NEAR THE CORNER, 15 FEET WEST OF CENTERLINE OF DRIVEWAY, 28 FEET
 HV0025'NORTHWEST OF LARGE ELM TREE, AND SET IN THE TOP OF A CONCRETE POST.
 HV0025'A STANDARD DISK.
 HV0025
 HV0025                          STATION RECOVERY (1982)
 HV0025
 HV0025'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1982
 HV0025'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0255 ***********************************************************************
 HV0255  DESIGNATION -  F 63
 HV0255  PID         -  HV0255
 HV0255  STATE/COUNTY-  MD/DORCHESTER
 HV0255  COUNTRY     -  US
 HV0255  USGS QUAD   -  CHURCH CREEK (2016)
 HV0255
 HV0255                         *CURRENT SURVEY CONTROL
 HV0255  ______________________________________________________________________
 HV0255* NAD 83(1986) POSITION- 38 36 13.     (N) 076 13 54.     (W)   SCALED
 HV0255* NAVD 88 ORTHO HEIGHT -     1.227 (meters)        4.03  (feet) ADJUSTED
 HV0255  ______________________________________________________________________
 HV0255  GEOID HEIGHT    -        -34.641 (meters)                     GEOID18
 HV0255  DYNAMIC HEIGHT  -          1.226 (meters)        4.02  (feet) COMP
 HV0255  MODELED GRAVITY -    980,026.6   (mgal)                       NAVD 88
 HV0255
 HV0255  VERT ORDER      -  SECOND    CLASS 0
 HV0255
 HV0255.The horizontal coordinates were scaled from a map and have
 HV0255.an estimated accuracy of +/- 6 seconds.
 HV0255
 HV0255.The orthometric height was determined by differential leveling and
 HV0255.adjusted by the NATIONAL GEODETIC SURVEY
 HV0255.in June 1991.
 HV0255
 HV0255.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0255.GEOID18 height accuracy estimate available here.
 HV0255
 HV0255.Click photographs - Photos may exist for this station.
 HV0255
 HV0255.The dynamic height is computed by dividing the NAVD 88
 HV0255.geopotential number by the normal gravity value computed on the
 HV0255.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0255.degrees latitude (g = 980.6199 gals.).
 HV0255
 HV0255.The modeled gravity was interpolated from observed gravity values.
 HV0255
 HV0255;                    North         East    Units  Estimated Accuracy
 HV0255;SPC MD       -   104,290.      466,920.      MT  (+/- 180 meters Scaled)
 HV0255
 HV0255_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH927735(NAD 83)
 HV0255
 HV0255                          SUPERSEDED SURVEY CONTROL
 HV0255
 HV0255  NGVD 29 (02/24/95)    1.459  (m)            4.79   (f) ADJUSTED    2 0
 HV0255  NGVD 29 (11/26/84)    1.464  (m)            4.80   (f) SUPERSEDED  2 0
 HV0255
 HV0255.Superseded values are not recommended for survey control.
 HV0255
 HV0255.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0255.See file dsdata.pdf to determine how the superseded data were derived.
 HV0255
 HV0255_MARKER: DB = BENCH MARK DISK
 HV0255_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0255_SP_SET: CULVERT
 HV0255_STAMPING: F 63 1942
 HV0255_MARK LOGO: CGS
 HV0255_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0255
 HV0255  HISTORY     - Date     Condition        Report By
 HV0255  HISTORY     - 1942     MONUMENTED       CGS
 HV0255  HISTORY     - 1943     GOOD             CGS
 HV0255  HISTORY     - 1978     MARK NOT FOUND   USGS
 HV0255
 HV0255                          STATION DESCRIPTION
 HV0255
 HV0255'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0255'9.1 MI NW FROM CAMBRIDGE.
 HV0255'ALONG STATE HIGHWAY 343, SET IN THE EAST CONCRETE HEADWALL OF
 HV0255'A CULVERT UNDER A FARM DRIVE TO THE NORTH, 24 FEET NORTH OF THE
 HV0255'CENTER OF THE HIGHWAY, 11 FEET EAST OF THE CENTER OF THE DRIVE,
 HV0255'43 FEET EAST OF POWER POLE NO. 365, 2 FEET SOUTH OF THE NORTH END
 HV0255'OF THE HEADWALL.  A STANDARD DISK.
 HV0255
 HV0255                          STATION RECOVERY (1943)
 HV0255
 HV0255'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 HV0255'RECOVERED IN GOOD CONDITION.
 HV0255
 HV0255                          STATION RECOVERY (1978)
 HV0255
 HV0255'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1978
 HV0255'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1593 ***********************************************************************
 JU1593  DESIGNATION -  F 64
 JU1593  PID         -  JU1593
 JU1593  STATE/COUNTY-  MD/CECIL
 JU1593  COUNTRY     -  US
 JU1593  USGS QUAD   -  ELKTON (2016)
 JU1593
 JU1593                         *CURRENT SURVEY CONTROL
 JU1593  ______________________________________________________________________
 JU1593* NAD 83(1986) POSITION- 39 35 00.     (N) 075 52 26.     (W)   SCALED
 JU1593* NAVD 88 ORTHO HEIGHT -    19.997 (meters)       65.61  (feet) ADJUSTED
 JU1593  ______________________________________________________________________
 JU1593  GEOID HEIGHT    -        -33.198 (meters)                     GEOID18
 JU1593  DYNAMIC HEIGHT  -         19.987 (meters)       65.57  (feet) COMP
 JU1593  MODELED GRAVITY -    980,134.5   (mgal)                       NAVD 88
 JU1593
 JU1593  VERT ORDER      -  SECOND    CLASS 0
 JU1593
 JU1593.The horizontal coordinates were scaled from a map and have
 JU1593.an estimated accuracy of +/- 6 seconds.
 JU1593
 JU1593.The orthometric height was determined by differential leveling and
 JU1593.adjusted by the NATIONAL GEODETIC SURVEY
 JU1593.in June 1991.
 JU1593
 JU1593.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1593.GEOID18 height accuracy estimate available here.
 JU1593
 JU1593.Click photographs - Photos may exist for this station.
 JU1593
 JU1593.The dynamic height is computed by dividing the NAVD 88
 JU1593.geopotential number by the normal gravity value computed on the
 JU1593.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1593.degrees latitude (g = 980.6199 gals.).
 JU1593
 JU1593.The modeled gravity was interpolated from observed gravity values.
 JU1593
 JU1593;                    North         East    Units  Estimated Accuracy
 JU1593;SPC MD       -   213,360.      496,750.      MT  (+/- 180 meters Scaled)
 JU1593
 JU1593_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ249818(NAD 83)
 JU1593
 JU1593                          SUPERSEDED SURVEY CONTROL
 JU1593
 JU1593  NGVD 29 (11/26/84)   20.230  (m)           66.37   (f) ADJUSTED    2 0
 JU1593
 JU1593.Superseded values are not recommended for survey control.
 JU1593
 JU1593.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1593.See file dsdata.pdf to determine how the superseded data were derived.
 JU1593
 JU1593_MARKER: DB = BENCH MARK DISK
 JU1593_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1593_STAMPING: F 64 1942
 JU1593_MARK LOGO: CGS
 JU1593_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1593+STABILITY: SURFACE MOTION
 JU1593
 JU1593  HISTORY     - Date     Condition        Report By
 JU1593  HISTORY     - 1942     MONUMENTED       CGS
 JU1593  HISTORY     - 1964     MARK NOT FOUND   CGS
 JU1593
 JU1593                          STATION DESCRIPTION
 JU1593
 JU1593'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1593'3.5 MI SW FROM ELKTON.
 JU1593'3.5 MILES SOUTHWEST ALONG THE ELK NECK ROAD FROM THE COURTHOUSE
 JU1593'AT ELKTON, CECIL COUNTY, 1.0 MILE SOUTHWEST OF THE POINT WHERE THE
 JU1593'ROAD MAKES A SHARP TURN TO THE SOUTH, 100 FEET FROM A WHITEWASHED
 JU1593'BARN, IN A FIELD, 18.8 FEET SOUTHEAST OF THE CENTERLINE OF THE
 JU1593'ROAD, 8.4 FEET WEST OF A 30-INCH MAPLE TREE, AND NEAR A WHITE
 JU1593'WOODEN WITNESS POST.  A STANDARD DISK, STAMPED F 64 1942 AND
 JU1593'SET IN THE TOP OF A CONCRETE POST.  NOTE-- A RESIDENT AT THE
 JU1593'LOCATION STATED IT WAS LOCATED AT PLACE WERE THERE IS NOW A ROAD
 JU1593'TO A GRAVEL PIT, MARK PROBABLY WAS DESTROYED WHEN THIS ROAD WAS
 JU1593'MADE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0890 ***********************************************************************
 HU0890  DESIGNATION -  F 67
 HU0890  PID         -  HU0890
 HU0890  STATE/COUNTY-  MD/CAROLINE
 HU0890  COUNTRY     -  US
 HU0890  USGS QUAD   -  HOBBS (2017)
 HU0890
 HU0890                         *CURRENT SURVEY CONTROL
 HU0890  ______________________________________________________________________
 HU0890* NAD 83(1986) POSITION- 38 50 51.2    (N) 075 49 11.5    (W)   HD_HELD2
 HU0890* NAVD 88 ORTHO HEIGHT -    11.130 (meters)       36.52  (feet) ADJUSTED
 HU0890  ______________________________________________________________________
 HU0890  GEOID HEIGHT    -        -34.957 (meters)                     GEOID18
 HU0890  DYNAMIC HEIGHT  -         11.123 (meters)       36.49  (feet) COMP
 HU0890  MODELED GRAVITY -    980,036.4   (mgal)                       NAVD 88
 HU0890
 HU0890  VERT ORDER      -  SECOND    CLASS I
 HU0890
 HU0890.The horizontal coordinates were established by autonomous hand held GPS
 HU0890.observations and have an estimated accuracy of +/- 10 meters.
 HU0890
 HU0890.The orthometric height was determined by differential leveling and
 HU0890.adjusted by the NATIONAL GEODETIC SURVEY
 HU0890.in June 1991.
 HU0890
 HU0890.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0890.GEOID18 height accuracy estimate available here.
 HU0890
 HU0890.Click photographs - Photos may exist for this station.
 HU0890
 HU0890.The dynamic height is computed by dividing the NAVD 88
 HU0890.geopotential number by the normal gravity value computed on the
 HU0890.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0890.degrees latitude (g = 980.6199 gals.).
 HU0890
 HU0890.The modeled gravity was interpolated from observed gravity values.
 HU0890
 HU0890;                    North         East    Units  Estimated Accuracy
 HU0890;SPC MD       -   131,746.      502,442.      MT  (+/- 10 meters HH2 GPS)
 HU0890
 HU0890_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2885400179(NAD 83)
 HU0890
 HU0890                          SUPERSEDED SURVEY CONTROL
 HU0890
 HU0890  NGVD 29 (11/26/84)   11.370  (m)           37.30   (f) ADJUSTED    2 0
 HU0890
 HU0890.Superseded values are not recommended for survey control.
 HU0890
 HU0890.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0890.See file dsdata.pdf to determine how the superseded data were derived.
 HU0890
 HU0890_MARKER: DB = BENCH MARK DISK
 HU0890_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0890_STAMPING: F 67 1942
 HU0890_MARK LOGO: CGS
 HU0890_PROJECTION: PROJECTING 5 CENTIMETERS
 HU0890_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0890+STABILITY: SURFACE MOTION
 HU0890_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0890+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2016
 HU0890
 HU0890  HISTORY     - Date     Condition        Report By
 HU0890  HISTORY     - 1942     MONUMENTED       CGS
 HU0890  HISTORY     - 1974     GOOD             MDDT
 HU0890  HISTORY     - 19910103 GOOD             NGS
 HU0890  HISTORY     - 20020604 GOOD             MDSHA
 HU0890  HISTORY     - 20160915 GOOD             USPSQD
 HU0890
 HU0890                          STATION DESCRIPTION
 HU0890
 HU0890'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0890'2.8 MI S FROM DENTON.
 HU0890'2.75 MILES SOUTH ALONG HIGHWAY 313 FROM THE WYE JUNCTION OF
 HU0890'HIGHWAY 313 AND HIGHWAY 404 AT DENTON, CAROLINE COUNTY, 40.5
 HU0890'FEET SOUTHEAST OF THE CENTER LINE OF HIGHWAY 313, 6.4 FEET
 HU0890'SOUTHWEST OF A BLAZED TREE, 54.0 FEET NORTHEAST OF A TELEPHONE
 HU0890'POLE, SET IN THE NORTHWEST EDGE OF THE WOODS ABOUT 4.0 FEET
 HU0890'HIGHER THAN THE ROAD, 2.0 FEET FROM A STANDARD REFERENCE POST,
 HU0890'70 YARDS EAST OF A DIRT ROAD WHICH RUNS NORTHWEST FROM HIGHWAY
 HU0890'TO A 1-STORY HOUSE.
 HU0890
 HU0890                          STATION RECOVERY (1974)
 HU0890
 HU0890'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1974
 HU0890'RECOVERED IN GOOD CONDITION.
 HU0890
 HU0890                          STATION RECOVERY (1991)
 HU0890
 HU0890'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU0890'1.0 EASTERLY ALONG STATE HIGHWAY 404 BUSINESS (FRANKLIN STREET) FROM
 HU0890'THE INTERSECTION OF STATE HIGHWAY 313 (SIXTH STREET) IN DENTON,
 HU0890'THENCE 3.5 KM (2.2 MI) SOUTHEASTERLY ALONG STATE HIGHWAY 404, THENCE
 HU0890'0.6 KM (0.4 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 16, 33.2 M
 HU0890'(108.9 FT) NORTH OF THE NORTH CORNER OF A HOUSE, 17.2 M (56.4 FT)
 HU0890'NORTHEAST OF UTILITY POLE NUMBER 7, 12.3 M (40.4 FT) SOUTHEAST OF THE
 HU0890'HIGHWAY CENTERLINE, 4.9 M (16.1 FT) WEST OF THE CENTER OF A DRIVEWAY,
 HU0890'2.4 M (7.9 FT) NORTHWEST OF A 16-INCH PINE TREE, 0.3 M (1.0 FT) ABOVE
 HU0890'THE LEVEL OF THE HIGHWAY, AND THE MONUMENT PROJECTS 0.05 M (0.16 FT)
 HU0890'ABOVE THE GROUND SURFACE.
 HU0890
 HU0890                          STATION RECOVERY (2002)
 HU0890
 HU0890'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU0890'RECOVERED AS DESCRIBED.
 HU0890
 HU0890                          STATION RECOVERY (2016)
 HU0890
 HU0890'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 HU0890'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0822 ***********************************************************************
 HU0822  DESIGNATION -  F 68
 HU0822  PID         -  HU0822
 HU0822  STATE/COUNTY-  MD/CAROLINE
 HU0822  COUNTRY     -  US
 HU0822  USGS QUAD   -  RIDGELY (2017)
 HU0822
 HU0822                         *CURRENT SURVEY CONTROL
 HU0822  ______________________________________________________________________
 HU0822* NAD 83(1986) POSITION- 38 57 36.     (N) 075 53 27.     (W)   SCALED
 HU0822* NAVD 88 ORTHO HEIGHT -    18.108 (meters)       59.41  (feet) ADJUSTED
 HU0822  ______________________________________________________________________
 HU0822  GEOID HEIGHT    -        -34.512 (meters)                     GEOID18
 HU0822  DYNAMIC HEIGHT  -         18.097 (meters)       59.37  (feet) COMP
 HU0822  MODELED GRAVITY -    980,056.7   (mgal)                       NAVD 88
 HU0822
 HU0822  VERT ORDER      -  SECOND    CLASS 0
 HU0822
 HU0822.The horizontal coordinates were scaled from a map and have
 HU0822.an estimated accuracy of +/- 6 seconds.
 HU0822
 HU0822.The orthometric height was determined by differential leveling and
 HU0822.adjusted by the NATIONAL GEODETIC SURVEY
 HU0822.in June 1991.
 HU0822
 HU0822.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0822.GEOID18 height accuracy estimate available here.
 HU0822
 HU0822.Click photographs - Photos may exist for this station.
 HU0822
 HU0822.The dynamic height is computed by dividing the NAVD 88
 HU0822.geopotential number by the normal gravity value computed on the
 HU0822.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0822.degrees latitude (g = 980.6199 gals.).
 HU0822
 HU0822.The modeled gravity was interpolated from observed gravity values.
 HU0822
 HU0822;                    North         East    Units  Estimated Accuracy
 HU0822;SPC MD       -   144,150.      496,130.      MT  (+/- 180 meters Scaled)
 HU0822
 HU0822_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ228127(NAD 83)
 HU0822
 HU0822                          SUPERSEDED SURVEY CONTROL
 HU0822
 HU0822  NGVD 29 (11/26/84)   18.344  (m)           60.18   (f) ADJUSTED    2 0
 HU0822
 HU0822.Superseded values are not recommended for survey control.
 HU0822
 HU0822.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0822.See file dsdata.pdf to determine how the superseded data were derived.
 HU0822
 HU0822_MARKER: DB = BENCH MARK DISK
 HU0822_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0822_STAMPING: F 68 1942
 HU0822_MARK LOGO: CGS
 HU0822_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0822+STABILITY: SURFACE MOTION
 HU0822
 HU0822  HISTORY     - Date     Condition        Report By
 HU0822  HISTORY     - 1942     MONUMENTED       CGS
 HU0822
 HU0822                          STATION DESCRIPTION
 HU0822
 HU0822'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0822'0.1 MI E FROM RIDGLEY.
 HU0822'0.1 MILE EAST AND 1.0 MILE NORTH ALONG STATE HIGHWAY 312 FROM THE
 HU0822'PENNSYLVANIA RAILROAD STATION AT RIDGLEY, CAROLINE COUNTY, 39
 HU0822'FEET NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 15 FEET
 HU0822'SOUTHWEST OF THE CENTERLINE OF A DRIVEWAY, 9.6 FEET WEST OF AN
 HU0822'18-INCH WALNUT TREE, 4 FEET WEST OF POLE 14, AND 2 FEET SOUTHEAST
 HU0822'OF A WHITE WOODEN WITNESS POST.  A STANDARD DISK, STAMPED
 HU0822'F 68 1942 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0358 ***********************************************************************
 JV0358  DESIGNATION -  F 69
 JV0358  PID         -  JV0358
 JV0358  STATE/COUNTY-  MD/KENT
 JV0358  COUNTRY     -  US
 JV0358  USGS QUAD   -  CHESTERTOWN (2017)
 JV0358
 JV0358                         *CURRENT SURVEY CONTROL
 JV0358  ______________________________________________________________________
 JV0358* NAD 83(1986) POSITION- 39 09 32.3    (N) 076 06 47.8    (W)   HD_HELD2
 JV0358* NAVD 88 ORTHO HEIGHT -    10.663 (meters)       34.98  (feet) ADJUSTED
 JV0358  ______________________________________________________________________
 JV0358  GEOID HEIGHT    -        -33.458 (meters)                     GEOID18
 JV0358  DYNAMIC HEIGHT  -         10.657 (meters)       34.96  (feet) COMP
 JV0358  MODELED GRAVITY -    980,106.0   (mgal)                       NAVD 88
 JV0358
 JV0358  VERT ORDER      -  FIRST     CLASS II
 JV0358
 JV0358.The horizontal coordinates were established by autonomous hand held GPS
 JV0358.observations and have an estimated accuracy of +/- 10 meters.
 JV0358
 JV0358.The orthometric height was determined by differential leveling and
 JV0358.adjusted by the NATIONAL GEODETIC SURVEY
 JV0358.in July 2019.
 JV0358
 JV0358.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0358.GEOID18 height accuracy estimate available here.
 JV0358
 JV0358.Click photographs - Photos may exist for this station.
 JV0358
 JV0358.The dynamic height is computed by dividing the NAVD 88
 JV0358.geopotential number by the normal gravity value computed on the
 JV0358.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0358.degrees latitude (g = 980.6199 gals.).
 JV0358
 JV0358.The modeled gravity was interpolated from observed gravity values.
 JV0358
 JV0358;                    North         East    Units  Estimated Accuracy
 JV0358;SPC MD       -   166,026.      476,637.      MT  (+/- 10 meters HH2 GPS)
 JV0358
 JV0358_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0381435008(NAD 83)
 JV0358
 JV0358                          SUPERSEDED SURVEY CONTROL
 JV0358
 JV0358  NAVD 88 (06/15/91)   10.667  (m)           35.00   (f) SUPERSEDED  1 2
 JV0358  NGVD 29 (11/26/84)   10.906  (m)           35.78   (f) ADJUSTED    1 2
 JV0358
 JV0358.Superseded values are not recommended for survey control.
 JV0358
 JV0358.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0358.See file dsdata.pdf to determine how the superseded data were derived.
 JV0358
 JV0358_MARKER: DB = BENCH MARK DISK
 JV0358_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0358_SP_SET: BUILDING
 JV0358_STAMPING: F 69 1942
 JV0358_MARK LOGO: CGS
 JV0358_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0358_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0358+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV0358
 JV0358  HISTORY     - Date     Condition        Report By
 JV0358  HISTORY     - 1942     MONUMENTED       CGS
 JV0358  HISTORY     - 1971     GOOD             NGS
 JV0358  HISTORY     - 19910412 GOOD             USPSQD
 JV0358  HISTORY     - 20031021 GOOD             USPSQD
 JV0358  HISTORY     - 20140117 GOOD             ARCSHE
 JV0358  HISTORY     - 20190423 GOOD             MDSHA
 JV0358  HISTORY     - 20250731 GOOD             PROFLN
 JV0358
 JV0358                          STATION DESCRIPTION
 JV0358
 JV0358'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0358'AT POMONA.
 JV0358'AT POMONA, AT THE BOND CHAPEL METHODIST CHURCH AND CEMETERY, ALONG
 JV0358'STATE HIGHWAY 289, SET VERTICALLY IN THE NORTHWEST BRICK FACE
 JV0358'AND 1.5 FEET SOUTHWEST OF THE NORTH CORNER OF THE CHURCH, 54.7 FEET
 JV0358'SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, 72.1 FEET SOUTH OF
 JV0358'BENCH MARK M 114 DESCRIBED AND 4.8 FEET ABOVE THE LEVEL OF THE
 JV0358'GROUND.
 JV0358
 JV0358                          STATION RECOVERY (1991)
 JV0358
 JV0358'RECOVERY NOTE BY US POWER SQUADRON 1991 (GSW)
 JV0358'RECOVERED IN GOOD CONDITION.
 JV0358
 JV0358                          STATION RECOVERY (2003)
 JV0358
 JV0358'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 JV0358'MARK PAINTED SAME COLOR AS CHURCH BRICK RED.
 JV0358
 JV0358                          STATION RECOVERY (2014)
 JV0358
 JV0358'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0358'RECOVERED IN GOOD CONDITION.
 JV0358
 JV0358                          STATION RECOVERY (2019)
 JV0358
 JV0358'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (EBD)
 JV0358'RECOVERED AS DESCRIBED.
 JV0358
 JV0358                          STATION RECOVERY (2025)
 JV0358
 JV0358'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0358'RECOVERED AS DESCRIBED.  THE DISK IS PAINTED RED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0278 ***********************************************************************
 HU0278  DESIGNATION -  F 7
 HU0278  PID         -  HU0278
 HU0278  STATE/COUNTY-  MD/WORCESTER
 HU0278  COUNTRY     -  US
 HU0278  USGS QUAD   -  BERLIN (2016)
 HU0278
 HU0278                         *CURRENT SURVEY CONTROL
 HU0278  ______________________________________________________________________
 HU0278* NAD 83(1986) POSITION- 38 19 42.     (N) 075 08 40.     (W)   SCALED
 HU0278* NAVD 88 ORTHO HEIGHT -     1.317 (meters)        4.32  (feet) POSTED
 HU0278  ______________________________________________________________________
 HU0278  GEOID HEIGHT    -        -36.046 (meters)                     GEOID18
 HU0278  DYNAMIC HEIGHT  -          1.32  (meters)        4.3   (feet) COMP
 HU0278  MODELED GRAVITY -    980,006.9   (mgal)                       NAVD 88
 HU0278
 HU0278  VERT ORDER      -  * POSTED, SEE BELOW
 HU0278
 HU0278.The horizontal coordinates were scaled from a map and have
 HU0278.an estimated accuracy of +/- 6 seconds.
 HU0278
 HU0278.The orthometric height was determined by differential leveling
 HU0278.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HU0278
 HU0278.* This is a POSTED BENCH MARK height.
 HU0278
 HU0278.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0278.GEOID18 height accuracy estimate available here.
 HU0278
 HU0278.Click photographs - Photos may exist for this station.
 HU0278
 HU0278.The dynamic height is computed by dividing the NAVD 88
 HU0278.geopotential number by the normal gravity value computed on the
 HU0278.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0278.degrees latitude (g = 980.6199 gals.).
 HU0278
 HU0278.The modeled gravity was interpolated from observed gravity values.
 HU0278
 HU0278;                    North         East    Units  Estimated Accuracy
 HU0278;SPC MD       -    75,100.      562,240.      MT  (+/- 180 meters Scaled)
 HU0278
 HU0278_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH873422(NAD 83)
 HU0278
 HU0278                          SUPERSEDED SURVEY CONTROL
 HU0278
 HU0278  NGVD 29 (11/26/84)    1.563  (m)            5.13   (f) ADJUSTED    2 0
 HU0278
 HU0278.Superseded values are not recommended for survey control.
 HU0278
 HU0278.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0278.See file dsdata.pdf to determine how the superseded data were derived.
 HU0278
 HU0278_MARKER: DB = BENCH MARK DISK
 HU0278_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0278_STAMPING: F 7 1935
 HU0278_MARK LOGO: CGS
 HU0278_PROJECTION: FLUSH
 HU0278_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0278+STABILITY: SURFACE MOTION
 HU0278
 HU0278  HISTORY     - Date     Condition        Report By
 HU0278  HISTORY     - 1935     MONUMENTED       CGS
 HU0278  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU0278
 HU0278                          STATION DESCRIPTION
 HU0278
 HU0278'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0278'4.2 MI E FROM BERLIN.
 HU0278'4.2 MILES EAST ALONG THE BALTIMORE AND EASTERN RAILROAD FROM THE
 HU0278'STATION AT BERLIN, WORCESTER COUNTY, 21 FEET EAST OF THE CENTERLINE
 HU0278'OF A PRIVATE ROAD, 17 FEET FROM THE CENTERLINE OF THE TRACK, 4 FEET
 HU0278'SOUTHEAST OF A POLE, AND 1.8 FEET LOWER THAN THE TRACK.  A STANDARD
 HU0278'DISK, STAMPED F 7 1935 AND SET IN THE TOP OF A CONCRETE POST FLUSH
 HU0278'WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0284 ***********************************************************************
 JV0284  DESIGNATION -  F 71
 JV0284  PID         -  JV0284
 JV0284  STATE/COUNTY-  MD/KENT
 JV0284  COUNTRY     -  US
 JV0284  USGS QUAD   -  CHESTERTOWN (2017)
 JV0284
 JV0284                         *CURRENT SURVEY CONTROL
 JV0284  ______________________________________________________________________
 JV0284* NAD 83(1986) POSITION- 39 12 03.     (N) 076 02 39.     (W)   SCALED
 JV0284* NAVD 88 ORTHO HEIGHT -     6.712 (meters)       22.02  (feet) ADJUSTED
 JV0284  ______________________________________________________________________
 JV0284  GEOID HEIGHT    -        -33.481 (meters)                     GEOID18
 JV0284  DYNAMIC HEIGHT  -          6.709 (meters)       22.01  (feet) COMP
 JV0284  MODELED GRAVITY -    980,107.9   (mgal)                       NAVD 88
 JV0284
 JV0284  VERT ORDER      -  SECOND    CLASS 0
 JV0284
 JV0284.The horizontal coordinates were scaled from a map and have
 JV0284.an estimated accuracy of +/- 6 seconds.
 JV0284
 JV0284.The orthometric height was determined by differential leveling and
 JV0284.adjusted by the NATIONAL GEODETIC SURVEY
 JV0284.in June 1991.
 JV0284
 JV0284.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0284.GEOID18 height accuracy estimate available here.
 JV0284
 JV0284.Click photographs - Photos may exist for this station.
 JV0284
 JV0284.The dynamic height is computed by dividing the NAVD 88
 JV0284.geopotential number by the normal gravity value computed on the
 JV0284.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0284.degrees latitude (g = 980.6199 gals.).
 JV0284
 JV0284.The modeled gravity was interpolated from observed gravity values.
 JV0284
 JV0284;                    North         East    Units  Estimated Accuracy
 JV0284;SPC MD       -   170,730.      482,560.      MT  (+/- 180 meters Scaled)
 JV0284
 JV0284_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ098395(NAD 83)
 JV0284
 JV0284                          SUPERSEDED SURVEY CONTROL
 JV0284
 JV0284  NGVD 29 (11/26/84)    6.947  (m)           22.79   (f) ADJUSTED    2 0
 JV0284
 JV0284.Superseded values are not recommended for survey control.
 JV0284
 JV0284.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0284.See file dsdata.pdf to determine how the superseded data were derived.
 JV0284
 JV0284_MARKER: DB = BENCH MARK DISK
 JV0284_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0284_STAMPING: F 71 1942
 JV0284_MARK LOGO: CGS
 JV0284_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0284+STABILITY: SURFACE MOTION
 JV0284
 JV0284  HISTORY     - Date     Condition        Report By
 JV0284  HISTORY     - 1942     MONUMENTED       CGS
 JV0284  HISTORY     - 20031021 MARK NOT FOUND   USPSQD
 JV0284
 JV0284                          STATION DESCRIPTION
 JV0284
 JV0284'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0284'0.9 MI SE FROM CHESTERTOWN.
 JV0284'ALONG HIGHWAY 213, ABOUT 0.9 MILE SOUTHEAST OF THE SOUTHEAST END
 JV0284'OF THE CHESTER RIVER BRIDGE AT CHESTERTOWN, 30 YARDS NORTHWEST
 JV0284'OF MILEAGE MARKER NUMBER 20, AT A JUNCTION OF A DIRT ROAD
 JV0284'RUNNING NORTHEAST FROM THE HIGHWAY, IN THE NORTH ANGLE OF THE
 JV0284'JUNCTION, 33.5 FEET NORTHEAST CENTER LINE OF THE HIGHWAY, 22 FEET
 JV0284'NORTHWEST OF THE CENTER LINE OF THE DIRT ROAD, 3 FEET NORTH OF
 JV0284'THE CORNER FENCE POST, A BENCH MARK DISK SET IN THE TOP OF A
 JV0284'CONCRETE POST PROJECTING ABOUT 6 INCHES.
 JV0284
 JV0284                          STATION RECOVERY (2003)
 JV0284
 JV0284'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 JV0284'SEE JV0285 F-71 RESET 1958.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0285 ***********************************************************************
 JV0285  DESIGNATION -  F 71 RESET
 JV0285  PID         -  JV0285
 JV0285  STATE/COUNTY-  MD/QUEEN ANNES
 JV0285  COUNTRY     -  US
 JV0285  USGS QUAD   -  CHESTERTOWN (2017)
 JV0285
 JV0285                         *CURRENT SURVEY CONTROL
 JV0285  ______________________________________________________________________
 JV0285* NAD 83(1986) POSITION- 39 12 05.     (N) 076 02 37.     (W)   SCALED
 JV0285* NAVD 88 ORTHO HEIGHT -     6.246 (meters)       20.49  (feet) ADJUSTED
 JV0285  ______________________________________________________________________
 JV0285  GEOID HEIGHT    -        -33.481 (meters)                     GEOID18
 JV0285  DYNAMIC HEIGHT  -          6.242 (meters)       20.48  (feet) COMP
 JV0285  MODELED GRAVITY -    980,108.0   (mgal)                       NAVD 88
 JV0285
 JV0285  VERT ORDER      -  FIRST     CLASS II
 JV0285
 JV0285.The horizontal coordinates were scaled from a map and have
 JV0285.an estimated accuracy of +/- 6 seconds.
 JV0285
 JV0285.The orthometric height was determined by differential leveling and
 JV0285.adjusted by the NATIONAL GEODETIC SURVEY
 JV0285.in January 2023.
 JV0285
 JV0285.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0285.GEOID18 height accuracy estimate available here.
 JV0285
 JV0285.Click photographs - Photos may exist for this station.
 JV0285
 JV0285.The dynamic height is computed by dividing the NAVD 88
 JV0285.geopotential number by the normal gravity value computed on the
 JV0285.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0285.degrees latitude (g = 980.6199 gals.).
 JV0285
 JV0285.The modeled gravity was interpolated from observed gravity values.
 JV0285
 JV0285;                    North         East    Units  Estimated Accuracy
 JV0285;SPC MD       -   170,800.      482,610.      MT  (+/- 180 meters Scaled)
 JV0285
 JV0285_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ098396(NAD 83)
 JV0285
 JV0285                          SUPERSEDED SURVEY CONTROL
 JV0285
 JV0285  NAVD 88 (06/15/91)    6.242  (m)           20.48   (f) SUPERSEDED  1 2
 JV0285  NGVD 29 (11/26/84)    6.483  (m)           21.27   (f) ADJUSTED    1 2
 JV0285
 JV0285.Superseded values are not recommended for survey control.
 JV0285
 JV0285.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0285.See file dsdata.pdf to determine how the superseded data were derived.
 JV0285
 JV0285_MARKER: DB = BENCH MARK DISK
 JV0285_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0285_STAMPING: F 71 RESET 1958
 JV0285_MARK LOGO: CGS
 JV0285_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0285+STABILITY: SURFACE MOTION
 JV0285
 JV0285  HISTORY     - Date     Condition        Report By
 JV0285  HISTORY     - 1958     MONUMENTED       CGS
 JV0285  HISTORY     - 1971     GOOD             NGS
 JV0285  HISTORY     - 19901128 GOOD             USPSQD
 JV0285  HISTORY     - 20031021 MARK NOT FOUND   USPSQD
 JV0285
 JV0285                          STATION DESCRIPTION
 JV0285
 JV0285'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0285'0.8 MI SE FROM KINGSTON.
 JV0285'ABOUT 0.8 MILE SOUTHEAST ALONG U.S. HIGHWAY 213 FROM THE
 JV0285'SOUTHEAST END OF THE HIGHWAY BRIDGE OVER THE CHESTER RIVER AT
 JV0285'KINGSTON, NEAR THE JUNCTION OF ROUNDTOP ROAD LEADING NORTHEAST,
 JV0285'316 FEET NORTHEAST OF THE CENTER LINE OF U.S. HIGHWAY 213,
 JV0285'25 1/2 FEET SOUTHEAST OF THE CENTER LINE OF ROUND TOP ROAD, 35
 JV0285'FEET SOUTHWEST OF THE CENTER LINE OF A DRIVEWAY LEADING
 JV0285'SOUTHEAST, 4 FEET SOUTHWEST OF POWER LINE POLE NO. 2, 2.2 FEET
 JV0285'NORTHWEST OF A FENCE LINE, 1 FOOT NORTHEAST OF A METAL WITNESS
 JV0285'POST, ABOUT LEVEL WITH THE ROAD AND SET IN THE TOP OF A CONCRETE
 JV0285'POST PROJECTING 4 INCHES ABOVE THE LEVEL OF THE GROUND.
 JV0285
 JV0285                          STATION RECOVERY (1990)
 JV0285
 JV0285'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0285'RECOVERED IN GOOD CONDITION.
 JV0285
 JV0285                          STATION RECOVERY (2003)
 JV0285
 JV0285'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 JV0285'REFERENCED FENCE AND WITNESS POST DO NOT EXIST.  EVIDENCE OF EXTENSIVE
 JV0285'DRAINAGE DITCH CONSTRUCTION IN THE AREA.  MARK MAY BE COVERED BY FILL.
 JV0285'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1162 ***********************************************************************
 JU1162  DESIGNATION -  F 72
 JU1162  PID         -  JU1162
 JU1162  STATE/COUNTY-  MD/KENT
 JU1162  COUNTRY     -  US
 JU1162  USGS QUAD   -  GALENA (2017)
 JU1162
 JU1162                         *CURRENT SURVEY CONTROL
 JU1162  ______________________________________________________________________
 JU1162* NAD 83(2011) POSITION- 39 21 19.76963(N) 075 52 36.28002(W)   ADJUSTED
 JU1162* NAD 83(2011) ELLIP HT-   -13.113 (meters)        (09/18/23)   ADJUSTED
 JU1162* NAD 83(2011) EPOCH   -  2010.00
 JU1162* NAVD 88 ORTHO HEIGHT -    20.407 (meters)       66.95  (feet) ADJUSTED
 JU1162  ______________________________________________________________________
 JU1162  GEOID HEIGHT    -        -33.523 (meters)                     GEOID18
 JU1162  NAD 83(2011) X  -  1,205,008.720 (meters)                     COMP
 JU1162  NAD 83(2011) Y  - -4,789,112.980 (meters)                     COMP
 JU1162  NAD 83(2011) Z  -  4,022,902.515 (meters)                     COMP
 JU1162  LAPLACE CORR    -         -1.87  (seconds)                    DEFLEC18
 JU1162  DYNAMIC HEIGHT  -         20.397 (meters)       66.92  (feet) COMP
 JU1162  MODELED GRAVITY -    980,110.5   (mgal)                       NAVD 88
 JU1162
 JU1162  VERT ORDER      -  FIRST     CLASS II
 JU1162
 JU1162  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU1162  Standards:
 JU1162         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU1162            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU1162  -------------------------------------------------------------------
 JU1162  NETWORK    0.57   1.35           0.25   0.21   0.69     -0.13358350
 JU1162  -------------------------------------------------------------------
 JU1162  Click here for local accuracies and other accuracy information.
 JU1162
 JU1162.The horizontal coordinates were established by GPS observations
 JU1162.and adjusted by the MD DEPT OF TRANSP in September 2023.
 JU1162
 JU1162.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU1162.been affixed to the stable North American tectonic plate. See 
 JU1162.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU1162
 JU1162.The horizontal coordinates are valid at the epoch date displayed above
 JU1162.which is a decimal equivalence of Year/Month/Day.
 JU1162
 JU1162.The orthometric height was determined by differential leveling and
 JU1162.adjusted by the NATIONAL GEODETIC SURVEY
 JU1162.in June 1991.
 JU1162
 JU1162.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1162.GEOID18 height accuracy estimate available here.
 JU1162
 JU1162.Click photographs - Photos may exist for this station.
 JU1162
 JU1162.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU1162
 JU1162.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU1162
 JU1162.The ellipsoidal height was determined by GPS observations
 JU1162.and is referenced to NAD 83.
 JU1162
 JU1162.The dynamic height is computed by dividing the NAVD 88
 JU1162.geopotential number by the normal gravity value computed on the
 JU1162.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1162.degrees latitude (g = 980.6199 gals.).
 JU1162
 JU1162.The modeled gravity was interpolated from observed gravity values.
 JU1162
 JU1162. The following values were computed from the NAD 83(2011) position.
 JU1162
 JU1162;                    North         East     Units Scale Factor Converg.
 JU1162;SPC MD       -   188,066.723   496,810.900   MT  0.99998483   +0 42 18.0
 JU1162;SPC MD       -   617,015.57  1,629,953.76   sFT  0.99998483   +0 42 18.0
 JU1162;UTM  18      - 4,356,593.578   424,461.934   MT  0.99967025   -0 33 21.6
 JU1162
 JU1162!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU1162!SPC MD       -   1.00000206  x   0.99998483  =   0.99998689
 JU1162!UTM  18      -   1.00000206  x   0.99967025  =   0.99967231
 JU1162
 JU1162_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2446156593(NAD 83)
 JU1162
 JU1162                          SUPERSEDED SURVEY CONTROL
 JU1162
 JU1162  NGVD 29 (11/26/84)   20.650  (m)           67.75   (f) ADJUSTED    1 2
 JU1162
 JU1162.Superseded values are not recommended for survey control.
 JU1162
 JU1162.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1162.See file dsdata.pdf to determine how the superseded data were derived.
 JU1162
 JU1162_MARKER: DB = BENCH MARK DISK
 JU1162_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1162_STAMPING: F 72 1942
 JU1162_MARK LOGO: CGS
 JU1162_PROJECTION: PROJECTING 8 CENTIMETERS
 JU1162_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1162+STABILITY: SURFACE MOTION
 JU1162_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1162+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2025
 JU1162
 JU1162  HISTORY     - Date     Condition        Report By
 JU1162  HISTORY     - 1942     MONUMENTED       CGS
 JU1162  HISTORY     - 1971     GOOD             NGS
 JU1162  HISTORY     - 20010325 GOOD             USPSQD
 JU1162  HISTORY     - 20050101 GOOD             USPSQD
 JU1162  HISTORY     - 20070204 GOOD             USPSQD
 JU1162  HISTORY     - 20111120 GOOD             GEOCAC
 JU1162  HISTORY     - 20130503 GOOD             ARCSHE
 JU1162  HISTORY     - 20211226 GOOD             MDSHA
 JU1162  HISTORY     - 20250821 GOOD             PROFLN
 JU1162
 JU1162                          STATION DESCRIPTION
 JU1162
 JU1162'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1162'1 MI N FROM GALENA.
 JU1162'ABOUT 1.05 MILES NORTH ALONG U.S. HIGHWAY 213 FROM THE
 JU1162'INTERSECTION OF STATE HIGHWAYS 290 AND 313 AT GALENA, 0.6 MILE
 JU1162'SOUTH OF THE SOUTHEAST END OF THE HIGHWAY BRIDGE OVER THE
 JU1162'SASSAFRAS RIVER AT GEORGETOWN, 57 FEET EAST OF THE CENTER LINE
 JU1162'OF THE HIGHWAY, 85.0 FEET SOUTHWEST AND ACROSS A DRIVEWAY FROM
 JU1162'THE SOUTHWEST CORNER OF A PORCH ON A 2-STORY HOUSE, 22 FEET
 JU1162'SOUTH OF THE CENTER LINE OF THE DRIVEWAY, 18 1/2 FEET NORTHEAST
 JU1162'OF POWER POLE NUMBER 1-278, 1.4 FEET SOUTHWEST OF A METAL WITNESS
 JU1162'POST, ABOUT LEVEL WITH THE HIGHWAY, AND SET IN THE TOP OF A
 JU1162'CONCRETE POST PROJECTING 3 INCHES.
 JU1162
 JU1162                          STATION RECOVERY (2001)
 JU1162
 JU1162'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKW)
 JU1162'RECOVERED IN GOOD CONDITION.
 JU1162
 JU1162                          STATION RECOVERY (2005)
 JU1162
 JU1162'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JU1162'POWER POLE ALSO BEARS THE NUMBERS 39250 AND 29258.  WITNESS POST HAS
 JU1162'BEEN MOVED, THE MARK IS AT THE BASE OF THE POST.
 JU1162
 JU1162                          STATION RECOVERY (2007)
 JU1162
 JU1162'RECOVERY NOTE BY US POWER SQUADRON 2007 (JKW)
 JU1162'RECOVERED IN GOOD CONDITION.
 JU1162
 JU1162                          STATION RECOVERY (2011)
 JU1162
 JU1162'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JU1162'RECOVERED AS DESCRIBED.
 JU1162
 JU1162                          STATION RECOVERY (2013)
 JU1162
 JU1162'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU1162'RECOVERED IN GOOD CONDITION.
 JU1162
 JU1162                          STATION RECOVERY (2021)
 JU1162
 JU1162'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JU1162'RECOVERED IN GOOD CONDITION.DESCRIPTION HAS BEEN UPDATED. THE MARK IS
 JU1162'LOCATED ABOUT 14.4 MI (23.2 KM) NORTHEAST OF CHESTERTOWN, 4.2 MI (6.8
 JU1162'KM) NORTHWEST OF MASSEY, 3.4 MI (5.5 KM) SOUTH OF CECILTON AND 1.0 MI
 JU1162'(1.6 KM) NORTH OF GALENA.
 JU1162'
 JU1162'TO REACH THE MARK FROM THE JUNCTION OF MD 290 AND MD 213 N AND N MAIN
 JU1162'ST, GO NORTH-NORTHWEST ON N MAIN ST FOR 1.04 MI (1.67 KM) TO THE MARK
 JU1162'ON THE RIGHT.
 JU1162'
 JU1162'THE MARK IS 218 FT (66.4 M) NORTHEAST OF A UTILITY POLE NUMBERED DPL
 JU1162'39249-29230, 58.5 FT (17.8 M) EAST OF THE CENTERLINE OF STATE ROUTE MD
 JU1162'213 AUGUSTINE HERMAN HIGHWAY, 19.2 FT (5.9 M) SOUTH OF THE CENTERLINE
 JU1162'OF A GRAVEL DRIVEWAY FOR 13831 AUGUSTINE HERMAN HIGHWAY, 16.3 FT (5.0
 JU1162'M) EAST OF A UTILITY POLE NUMBERED DPL 39250-29248, 0.8 FT (24 CM)
 JU1162'WEST OF A METAL WITNESS POST AND SIGN SET IN THE TOP OF A 8-IN (20 CM)
 JU1162'SQUARE CONCRETE POST AND ABOUT 0.25 FT (8 CM) HIGHER THAN THE GROUND.
 JU1162
 JU1162                          STATION RECOVERY (2025)
 JU1162
 JU1162'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1162'RECOVERED AS DESCRIBED.  THE MARK IS RIGHT NEXT TO A SKINNY LAMP POST
 JU1162'AND A METAL WITNESS POST.  OVERGROWN WITH GRASS THIS DATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0216 ***********************************************************************
 HV0216  DESIGNATION -  F 73
 HV0216  PID         -  HV0216
 HV0216  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0216  COUNTRY     -  US
 HV0216  USGS QUAD   -  ANNAPOLIS (2016)
 HV0216
 HV0216                         *CURRENT SURVEY CONTROL
 HV0216  ______________________________________________________________________
 HV0216* NAD 83(1986) POSITION- 38 57 56.     (N) 076 29 19.     (W)   SCALED
 HV0216* NAVD 88 ORTHO HEIGHT -     8.726 (meters)       28.63  (feet) ADJUSTED
 HV0216  ______________________________________________________________________
 HV0216  GEOID HEIGHT    -        -33.365 (meters)                     GEOID18
 HV0216  DYNAMIC HEIGHT  -          8.721 (meters)       28.61  (feet) COMP
 HV0216  MODELED GRAVITY -    980,073.4   (mgal)                       NAVD 88
 HV0216
 HV0216  VERT ORDER      -  SECOND    CLASS 0
 HV0216
 HV0216.The horizontal coordinates were scaled from a map and have
 HV0216.an estimated accuracy of +/- 6 seconds.
 HV0216
 HV0216.The orthometric height was determined by differential leveling and
 HV0216.adjusted by the NATIONAL GEODETIC SURVEY
 HV0216.in June 1991.
 HV0216
 HV0216.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0216.GEOID18 height accuracy estimate available here.
 HV0216
 HV0216.Click photographs - Photos may exist for this station.
 HV0216
 HV0216.The dynamic height is computed by dividing the NAVD 88
 HV0216.geopotential number by the normal gravity value computed on the
 HV0216.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0216.degrees latitude (g = 980.6199 gals.).
 HV0216
 HV0216.The modeled gravity was interpolated from observed gravity values.
 HV0216
 HV0216;                    North         East    Units  Estimated Accuracy
 HV0216;SPC MD       -   144,310.      444,320.      MT  (+/- 180 meters Scaled)
 HV0216
 HV0216_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ710140(NAD 83)
 HV0216
 HV0216                          SUPERSEDED SURVEY CONTROL
 HV0216
 HV0216  NGVD 29 (11/26/84)    8.976  (m)           29.45   (f) ADJUSTED    2 0
 HV0216
 HV0216.Superseded values are not recommended for survey control.
 HV0216
 HV0216.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0216.See file dsdata.pdf to determine how the superseded data were derived.
 HV0216
 HV0216_MARKER: DB = BENCH MARK DISK
 HV0216_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0216_STAMPING: F 73 1942
 HV0216_MARK LOGO: CGS
 HV0216_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0216+STABILITY: SURFACE MOTION
 HV0216
 HV0216  HISTORY     - Date     Condition        Report By
 HV0216  HISTORY     - 1942     MONUMENTED       CGS
 HV0216  HISTORY     - 20010215 MARK NOT FOUND   USPSQD
 HV0216
 HV0216                          STATION DESCRIPTION
 HV0216
 HV0216'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0216'AT ANNAPOLIS.
 HV0216'ALONG THE ROAD TO BAY RIDGE 1.3 MILES SOUTH OF THE CHURCH CIRCLE
 HV0216'AT ANNAPOLIS, IN THE SOUTH PART OF TOWN AT THE INTERSECTION
 HV0216'OF CHESAPEAKE AVE. AND BAY RIDGE AVE. IN THE SOUTHEAST ANGLE,
 HV0216'42.2 FEET EAST OF THE CENTER LINE OF BAY RIDGE AVE., ABOUT 4
 HV0216'FEET EAST OF A FIRE HYDRANT, JUST NORTHWEST OF A WIRE FENCE, ABOUT
 HV0216'1 FOOT HIGHER THAN THE CENTER OF THE INTERSECTION AND IS A BENCH
 HV0216'MARK DISK SET IN THE TOP OF A CONCRETE POST SET FLUSH WITH THE
 HV0216'GROUND.
 HV0216
 HV0216                          STATION RECOVERY (2001)
 HV0216
 HV0216'RECOVERY NOTE BY US POWER SQUADRON 2001 (CRA)
 HV0216'MARK'S LOCATION IS NOW EASTPORT SHOPPING CENTER.  MARK MAY BE LOCATED
 HV0216'UNDER LARGE MATURE HEDGE OR CONCRETE GUTTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0514 ***********************************************************************
 JV0514  DESIGNATION -  F 74
 JV0514  PID         -  JV0514
 JV0514  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0514  COUNTRY     -  US
 JV0514  USGS QUAD   -  GIBSON ISLAND (2017)
 JV0514
 JV0514                         *CURRENT SURVEY CONTROL
 JV0514  ______________________________________________________________________
 JV0514* NAD 83(1986) POSITION- 39 07 08.     (N) 076 25 58.     (W)   SCALED
 JV0514* NAVD 88 ORTHO HEIGHT -     4.228 (meters)       13.87  (feet) ADJUSTED
 JV0514  ______________________________________________________________________
 JV0514  GEOID HEIGHT    -        -33.202 (meters)                     GEOID18
 JV0514  DYNAMIC HEIGHT  -          4.225 (meters)       13.86  (feet) COMP
 JV0514  MODELED GRAVITY -    980,092.3   (mgal)                       NAVD 88
 JV0514
 JV0514  VERT ORDER      -  SECOND    CLASS 0
 JV0514
 JV0514.The horizontal coordinates were scaled from a map and have
 JV0514.an estimated accuracy of +/- 6 seconds.
 JV0514
 JV0514.The orthometric height was determined by differential leveling and
 JV0514.adjusted by the NATIONAL GEODETIC SURVEY
 JV0514.in June 1991.
 JV0514
 JV0514.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0514.GEOID18 height accuracy estimate available here.
 JV0514
 JV0514.Click photographs - Photos may exist for this station.
 JV0514
 JV0514.The dynamic height is computed by dividing the NAVD 88
 JV0514.geopotential number by the normal gravity value computed on the
 JV0514.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0514.degrees latitude (g = 980.6199 gals.).
 JV0514
 JV0514.The modeled gravity was interpolated from observed gravity values.
 JV0514
 JV0514;                    North         East    Units  Estimated Accuracy
 JV0514;SPC MD       -   161,360.      449,050.      MT  (+/- 180 meters Scaled)
 JV0514
 JV0514_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ761309(NAD 83)
 JV0514
 JV0514                          SUPERSEDED SURVEY CONTROL
 JV0514
 JV0514  NGVD 29 (11/26/84)    4.474  (m)           14.68   (f) ADJUSTED    2 0
 JV0514
 JV0514.Superseded values are not recommended for survey control.
 JV0514
 JV0514.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0514.See file dsdata.pdf to determine how the superseded data were derived.
 JV0514
 JV0514_MARKER: DB = BENCH MARK DISK
 JV0514_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0514_STAMPING: F 74 1942
 JV0514_MARK LOGO: CGS
 JV0514_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0514+STABILITY: SURFACE MOTION
 JV0514
 JV0514  HISTORY     - Date     Condition        Report By
 JV0514  HISTORY     - 1942     MONUMENTED       CGS
 JV0514  HISTORY     - 1955     GOOD             CGS
 JV0514
 JV0514                          STATION DESCRIPTION
 JV0514
 JV0514'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0514'AT PINEHURST.
 JV0514'FROM THE JUNCTION OF GOV. RITCHIE HY (RT. 2) AND RT. 177, PROCEED
 JV0514'E ON RT. 177 FOR A DISTANCE OF 9.2 MILES TO THE JUNCTION OF
 JV0514'PINEHURST RD., THENCE 1.2 MILES ON PINEHURST RD. TO SPRINGDALE RD.,
 JV0514'E ON SPRINGDALE RD. 0.2 MILE TO BAYSIDE DRIVE.  BM IS 200 FT.
 JV0514'E OF BAYSIDE DRIVE ON THE PROPERTY BORDERING SOUTH OF SPRINGDALE RD.
 JV0514'EXTENDED AND OWNED BY C.E. HARE, IN THE NE CORNER OF THE PROPERTY
 JV0514'ON TOP OF A CONCRETE RETAINING WALL 2 FT. FROM THE N END.  STAMPED
 JV0514'F 74 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0179 ***********************************************************************
 HV0179  DESIGNATION -  F 76
 HV0179  PID         -  HV0179
 HV0179  STATE/COUNTY-  MD/QUEEN ANNES
 HV0179  COUNTRY     -  US
 HV0179  USGS QUAD   -  KENT ISLAND (2016)
 HV0179
 HV0179                         *CURRENT SURVEY CONTROL
 HV0179  ______________________________________________________________________
 HV0179* NAD 83(1986) POSITION- 38 53 29.     (N) 076 21 02.     (W)   SCALED
 HV0179* NAVD 88 ORTHO HEIGHT -     3.304 (meters)       10.84  (feet) ADJUSTED
 HV0179  ______________________________________________________________________
 HV0179  GEOID HEIGHT    -        -33.744 (meters)                     GEOID18
 HV0179  DYNAMIC HEIGHT  -          3.302 (meters)       10.83  (feet) COMP
 HV0179  MODELED GRAVITY -    980,071.2   (mgal)                       NAVD 88
 HV0179
 HV0179  VERT ORDER      -  SECOND    CLASS 0
 HV0179
 HV0179.The horizontal coordinates were scaled from a map and have
 HV0179.an estimated accuracy of +/- 6 seconds.
 HV0179
 HV0179.The orthometric height was determined by differential leveling and
 HV0179.adjusted by the NATIONAL GEODETIC SURVEY
 HV0179.in June 1991.
 HV0179
 HV0179.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0179.GEOID18 height accuracy estimate available here.
 HV0179
 HV0179.Click photographs - Photos may exist for this station.
 HV0179
 HV0179.The dynamic height is computed by dividing the NAVD 88
 HV0179.geopotential number by the normal gravity value computed on the
 HV0179.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0179.degrees latitude (g = 980.6199 gals.).
 HV0179
 HV0179.The modeled gravity was interpolated from observed gravity values.
 HV0179
 HV0179;                    North         East    Units  Estimated Accuracy
 HV0179;SPC MD       -   136,150.      456,340.      MT  (+/- 180 meters Scaled)
 HV0179
 HV0179_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ828055(NAD 83)
 HV0179
 HV0179                          SUPERSEDED SURVEY CONTROL
 HV0179
 HV0179  NGVD 29 (11/26/84)    3.541  (m)           11.62   (f) ADJUSTED    2 0
 HV0179
 HV0179.Superseded values are not recommended for survey control.
 HV0179
 HV0179.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0179.See file dsdata.pdf to determine how the superseded data were derived.
 HV0179
 HV0179_MARKER: DB = BENCH MARK DISK
 HV0179_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0179_STAMPING: F 76 1942
 HV0179_MARK LOGO: CGS
 HV0179_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0179+STABILITY: SURFACE MOTION
 HV0179
 HV0179  HISTORY     - Date     Condition        Report By
 HV0179  HISTORY     - 1942     MONUMENTED       CGS
 HV0179  HISTORY     - 19950628 MARK NOT FOUND   USPSQD
 HV0179  HISTORY     - 19990228 MARK NOT FOUND   USPSQD
 HV0179
 HV0179                          STATION DESCRIPTION
 HV0179
 HV0179'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0179'7 MI S FROM STEVENSVILLE.
 HV0179'THIS MARK IS ABOUT 7.0 MILES SOUTH OF THE WYE JUNCTION AT
 HV0179'STEVENSVILLE, AND ABOUT 4.5 MILES SOUTH OF THE T JUNCTION OF
 HV0179'HIGHWAY 404 AND 33, SET AT A FARM ROAD, IN THE EDGE OF A
 HV0179'FIELD, 48.0 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 24.0 FEET
 HV0179'NORTH OF THE CENTER LINE OF A FARM ROAD, 2.0 FEET WEST OF A
 HV0179'FENCE, 17.2 FEET NORTH OF THE NORTH GATE POST, ABOUT 100.0 FEET
 HV0179'SOUTHWEST FROM A 2 STORY YELLOW HOUSE, 15.6 FEET NORTHWEST FROM
 HV0179'A CULVERT, NEAR A WHITE REFERENCE POST.
 HV0179
 HV0179                          STATION RECOVERY (1995)
 HV0179
 HV0179'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0179'MARK NOT FOUND.
 HV0179
 HV0179                          STATION RECOVERY (1999)
 HV0179
 HV0179'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV0179'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0180 ***********************************************************************
 HV0180  DESIGNATION -  F 76 RESET
 HV0180  PID         -  HV0180
 HV0180  STATE/COUNTY-  MD/QUEEN ANNES
 HV0180  COUNTRY     -  US
 HV0180  USGS QUAD   -  KENT ISLAND (2016)
 HV0180
 HV0180                         *CURRENT SURVEY CONTROL
 HV0180  ______________________________________________________________________
 HV0180* NAD 83(1986) POSITION- 38 53 29.     (N) 076 21 02.     (W)   SCALED
 HV0180* NAVD 88 ORTHO HEIGHT -     3.28  (meters)       10.8   (feet) RESET
 HV0180  ______________________________________________________________________
 HV0180  GEOID HEIGHT    -        -33.744 (meters)                     GEOID18
 HV0180  VERT ORDER      -  THIRD
 HV0180
 HV0180.The horizontal coordinates were scaled from a map and have
 HV0180.an estimated accuracy of +/- 6 seconds.
 HV0180
 HV0180.The orthometric height was computed from unverified reset data.
 HV0180
 HV0180.No vertical observational check was made to the station.
 HV0180
 HV0180.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0180.GEOID18 height accuracy estimate available here.
 HV0180
 HV0180.Click photographs - Photos may exist for this station.
 HV0180
 HV0180;                    North         East    Units  Estimated Accuracy
 HV0180;SPC MD       -   136,150.      456,340.      MT  (+/- 180 meters Scaled)
 HV0180
 HV0180_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ828055(NAD 83)
 HV0180
 HV0180                          SUPERSEDED SURVEY CONTROL
 HV0180
 HV0180  NGVD 29 (??/??/??)    3.51   (m)           11.5    (f) RESET       3  
 HV0180
 HV0180.Superseded values are not recommended for survey control.
 HV0180
 HV0180.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0180.See file dsdata.pdf to determine how the superseded data were derived.
 HV0180
 HV0180_MARKER: DB = BENCH MARK DISK
 HV0180_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0180_STAMPING: F 76 RESET 1955
 HV0180_MARK LOGO: CGS
 HV0180_PROJECTION: PROJECTING 10 CENTIMETERS
 HV0180_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0180+STABILITY: SURFACE MOTION
 HV0180
 HV0180  HISTORY     - Date     Condition        Report By
 HV0180  HISTORY     - 1956     MONUMENTED       MDBCSM
 HV0180  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 HV0180  HISTORY     - 19990228 MARK NOT FOUND   USPSQD
 HV0180
 HV0180                          STATION DESCRIPTION
 HV0180
 HV0180'DESCRIBED BY MD BUR SURV AND MAPS 1956
 HV0180'6.4 MI S FROM STEVENSVILLE.
 HV0180'6.4 MILES SOUTH ALONG STATE HIGHWAY 33 FROM THE JUNCTION OF
 HV0180'U.S. HIGHWAY 50 AT STEVENSVILLE, QUEEN ANNES COUNTY, 0.3 MILE
 HV0180'NORTH OF THE JUNCTION OF A ROAD LEADING SOUTH TO KENT POINT, 90
 HV0180'FEET WEST OF THE CENTERLINE OF THE HIGHWAY, 25 FEET NORTH OF A
 HV0180'SAND ENTRANCE LEADING EAST AND WEST, AND 11.5 FEET EAST OF
 HV0180'E.S.P.S. CO. POLE 79A.  A STANDARD DISK, STAMPED F 76 RESET
 HV0180'1955 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES
 HV0180'ABOVE GROUND.
 HV0180
 HV0180                          STATION RECOVERY (1983)
 HV0180
 HV0180'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0180'MARK NOT FOUND.
 HV0180
 HV0180                          STATION RECOVERY (1999)
 HV0180
 HV0180'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV0180'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1337 ***********************************************************************
 JU1337  DESIGNATION -  F 77
 JU1337  PID         -  JU1337
 JU1337  STATE/COUNTY-  MD/QUEEN ANNES
 JU1337  COUNTRY     -  US
 JU1337  USGS QUAD   -  PRICE (2017)
 JU1337
 JU1337                         *CURRENT SURVEY CONTROL
 JU1337  ______________________________________________________________________
 JU1337* NAD 83(1986) POSITION- 39 00 50.     (N) 075 55 48.     (W)   SCALED
 JU1337* NAVD 88 ORTHO HEIGHT -    14.453 (meters)       47.42  (feet) ADJUSTED
 JU1337  ______________________________________________________________________
 JU1337  GEOID HEIGHT    -        -34.239 (meters)                     GEOID18
 JU1337  DYNAMIC HEIGHT  -         14.445 (meters)       47.39  (feet) COMP
 JU1337  MODELED GRAVITY -    980,068.3   (mgal)                       NAVD 88
 JU1337
 JU1337  VERT ORDER      -  SECOND    CLASS 0
 JU1337
 JU1337.The horizontal coordinates were scaled from a map and have
 JU1337.an estimated accuracy of +/- 6 seconds.
 JU1337
 JU1337.The orthometric height was determined by differential leveling and
 JU1337.adjusted by the NATIONAL GEODETIC SURVEY
 JU1337.in June 1991.
 JU1337
 JU1337.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1337.GEOID18 height accuracy estimate available here.
 JU1337
 JU1337.Click photographs - Photos may exist for this station.
 JU1337
 JU1337.The dynamic height is computed by dividing the NAVD 88
 JU1337.geopotential number by the normal gravity value computed on the
 JU1337.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1337.degrees latitude (g = 980.6199 gals.).
 JU1337
 JU1337.The modeled gravity was interpolated from observed gravity values.
 JU1337
 JU1337;                    North         East    Units  Estimated Accuracy
 JU1337;SPC MD       -   150,090.      492,670.      MT  (+/- 180 meters Scaled)
 JU1337
 JU1337_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ194187(NAD 83)
 JU1337
 JU1337                          SUPERSEDED SURVEY CONTROL
 JU1337
 JU1337  NGVD 29 (11/26/84)   14.689  (m)           48.19   (f) ADJUSTED    2 0
 JU1337
 JU1337.Superseded values are not recommended for survey control.
 JU1337
 JU1337.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1337.See file dsdata.pdf to determine how the superseded data were derived.
 JU1337
 JU1337_MARKER: DB = BENCH MARK DISK
 JU1337_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1337_STAMPING: F 77 1942
 JU1337_MARK LOGO: CGS
 JU1337_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1337+STABILITY: SURFACE MOTION
 JU1337
 JU1337  HISTORY     - Date     Condition        Report By
 JU1337  HISTORY     - 1942     MONUMENTED       CGS
 JU1337  HISTORY     - 19900517 MARK NOT FOUND   USPSQD
 JU1337
 JU1337                          STATION DESCRIPTION
 JU1337
 JU1337'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JU1337'0.8 MI W FROM BRIDGETOWN.
 JU1337'IN QUEEN ANNES COUNTY, 0.8 MILE WEST ALONG A MACADAM ROAD FROM
 JU1337'THE BRIDGETOWN METHODIST CHURCH AT BRIDGETOWN, CAROLINE COUNTY,
 JU1337'THENCE 2.1 MILES SOUTHWEST ALONG A DIRT ROAD, 24 FEET NORTH
 JU1337'OF POLE 208, 23.5 FEET NORTHWEST OF THE CENTERLINE OF THE DIRT
 JU1337'ROAD, 2.3 FEET NORTHEAST OF THE FOURTH ROW OF APPLE TREES, AND 2
 JU1337'FEET SOUTHEAST OF A WHITE WOODEN WITNESS POST.  A STANDARD
 JU1337'DISK, STAMPED F 77 1942 AND SET IN THE TOP OF A CONCRETE POST.
 JU1337
 JU1337                          STATION RECOVERY (1990)
 JU1337
 JU1337'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1337'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1559 ***********************************************************************
 JV1559  DESIGNATION -  F 79
 JV1559  PID         -  JV1559
 JV1559  STATE/COUNTY-  MD/BALTIMORE
 JV1559  COUNTRY     -  US
 JV1559  USGS QUAD   -  PHOENIX (2016)
 JV1559
 JV1559                         *CURRENT SURVEY CONTROL
 JV1559  ______________________________________________________________________
 JV1559* NAD 83(1986) POSITION- 39 30 30.     (N) 076 36 07.     (W)   SCALED
 JV1559* NAVD 88 ORTHO HEIGHT -    87.547 (meters)      287.23  (feet) ADJUSTED
 JV1559  ______________________________________________________________________
 JV1559  GEOID HEIGHT    -        -32.432 (meters)                     GEOID18
 JV1559  DYNAMIC HEIGHT  -         87.501 (meters)      287.08  (feet) COMP
 JV1559  MODELED GRAVITY -    980,110.2   (mgal)                       NAVD 88
 JV1559
 JV1559  VERT ORDER      -  SECOND    CLASS 0
 JV1559
 JV1559.The horizontal coordinates were scaled from a map and have
 JV1559.an estimated accuracy of +/- 6 seconds.
 JV1559
 JV1559.The orthometric height was determined by differential leveling and
 JV1559.adjusted by the NATIONAL GEODETIC SURVEY
 JV1559.in June 1991.
 JV1559
 JV1559.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1559.GEOID18 height accuracy estimate available here.
 JV1559
 JV1559.Click photographs - Photos may exist for this station.
 JV1559
 JV1559.The dynamic height is computed by dividing the NAVD 88
 JV1559.geopotential number by the normal gravity value computed on the
 JV1559.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1559.degrees latitude (g = 980.6199 gals.).
 JV1559
 JV1559.The modeled gravity was interpolated from observed gravity values.
 JV1559
 JV1559;                    North         East    Units  Estimated Accuracy
 JV1559;SPC MD       -   204,520.      434,230.      MT  (+/- 180 meters Scaled)
 JV1559
 JV1559_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ622744(NAD 83)
 JV1559
 JV1559                          SUPERSEDED SURVEY CONTROL
 JV1559
 JV1559  NGVD 29 (11/26/84)   87.782  (m)          288.00   (f) ADJUSTED    2 0
 JV1559
 JV1559.Superseded values are not recommended for survey control.
 JV1559
 JV1559.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1559.See file dsdata.pdf to determine how the superseded data were derived.
 JV1559
 JV1559_MARKER: DB = BENCH MARK DISK
 JV1559_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1559_SP_SET: BRIDGE
 JV1559_STAMPING: F 79 1942
 JV1559_MARK LOGO: CGS
 JV1559_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1559
 JV1559  HISTORY     - Date     Condition        Report By
 JV1559  HISTORY     - 1942     MONUMENTED       CGS
 JV1559  HISTORY     - 1965     GOOD             CGS
 JV1559  HISTORY     - 19950718 GOOD             USPSQD
 JV1559  HISTORY     - 19951018 GOOD             USPSQD
 JV1559
 JV1559                          STATION DESCRIPTION
 JV1559
 JV1559'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1559'2 MI E FROM ASHLAND.
 JV1559'THIS MARK IS ABOUT 2.0 MILES EAST ALONG ROAD NUMBER 145 FROM THE
 JV1559'RAILROAD OVERHEAD BRIDGE AT ASHLAND, BALTIMORE COUNTY, 15.5 FEET
 JV1559'NORTHWEST OF THE CENTER LINE OF THE ROAD, SET IN THE NORTH END
 JV1559'OF THE WEST RETAINING WALL OF A CONCRETE BRIDGE, 45.5 FEET WEST
 JV1559'OF A 40-INCH WHITE OAK TREE, ABOUT LEVEL WITH THE ROAD.  STAMPED
 JV1559'F 79 1942.
 JV1559
 JV1559                          STATION RECOVERY (1965)
 JV1559
 JV1559'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 JV1559'RECOVERED IN GOOD CONDITION.
 JV1559
 JV1559                          STATION RECOVERY (1995)
 JV1559
 JV1559'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1559'RECOVERED IN GOOD CONDITION.
 JV1559
 JV1559                          STATION RECOVERY (1995)
 JV1559
 JV1559'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1559'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0587 ***********************************************************************
 HU0587  DESIGNATION -  F 8
 HU0587  PID         -  HU0587
 HU0587  STATE/COUNTY-  MD/SOMERSET
 HU0587  COUNTRY     -  US
 HU0587  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0587
 HU0587                         *CURRENT SURVEY CONTROL
 HU0587  ______________________________________________________________________
 HU0587* NAD 83(1986) POSITION- 38 09 44.     (N) 075 41 21.     (W)   SCALED
 HU0587* NAVD 88 ORTHO HEIGHT -     4.783 (meters)       15.69  (feet) ADJUSTED
 HU0587  ______________________________________________________________________
 HU0587  GEOID HEIGHT    -        -36.057 (meters)                     GEOID18
 HU0587  DYNAMIC HEIGHT  -          4.780 (meters)       15.68  (feet) COMP
 HU0587  MODELED GRAVITY -    979,983.9   (mgal)                       NAVD 88
 HU0587
 HU0587  VERT ORDER      -  FIRST     CLASS II
 HU0587
 HU0587.The horizontal coordinates were scaled from a map and have
 HU0587.an estimated accuracy of +/- 6 seconds.
 HU0587
 HU0587.The orthometric height was determined by differential leveling and
 HU0587.adjusted by the NATIONAL GEODETIC SURVEY
 HU0587.in June 1991.
 HU0587
 HU0587.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0587.GEOID18 height accuracy estimate available here.
 HU0587
 HU0587.Click photographs - Photos may exist for this station.
 HU0587
 HU0587.The dynamic height is computed by dividing the NAVD 88
 HU0587.geopotential number by the normal gravity value computed on the
 HU0587.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0587.degrees latitude (g = 980.6199 gals.).
 HU0587
 HU0587.The modeled gravity was interpolated from observed gravity values.
 HU0587
 HU0587;                    North         East    Units  Estimated Accuracy
 HU0587;SPC MD       -    55,830.      514,880.      MT  (+/- 180 meters Scaled)
 HU0587
 HU0587_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH396240(NAD 83)
 HU0587
 HU0587                          SUPERSEDED SURVEY CONTROL
 HU0587
 HU0587  NGVD 29 (11/26/84)    5.029  (m)           16.50   (f) ADJUSTED    1 2
 HU0587
 HU0587.Superseded values are not recommended for survey control.
 HU0587
 HU0587.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0587.See file dsdata.pdf to determine how the superseded data were derived.
 HU0587
 HU0587_MARKER: DB = BENCH MARK DISK
 HU0587_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0587_STAMPING: F 8 1935
 HU0587_MARK LOGO: CGS
 HU0587_PROJECTION: PROJECTING 5 CENTIMETERS
 HU0587_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0587+STABILITY: SURFACE MOTION
 HU0587
 HU0587  HISTORY     - Date     Condition        Report By
 HU0587  HISTORY     - 1935     MONUMENTED       CGS
 HU0587  HISTORY     - 1942     GOOD             CGS
 HU0587  HISTORY     - 1963     MARK NOT FOUND   CGS
 HU0587
 HU0587                          STATION DESCRIPTION
 HU0587
 HU0587'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0587'AT PENINSULA JUNCTION.
 HU0587'AT PENINSULA JUNCTION, 2.5 MILES SOUTH OF PRINCESS ANNE, 800 FEET
 HU0587'SOUTH OF THE JUNCTION OF THE MAIN LINE OF THE PENNSYLVANIA RAILROAD
 HU0587'AND THE CRISFIELD BRANCH LINE, 141 FEET EAST OF U.S. 13, 60 FEET
 HU0587'NORTH OF THE NORTHWEST CORNER OF A LARGE BRICK PUMP HOUSE, AND 8
 HU0587'FEET WEST OF THE MOST WESTERLY OF TWO 40-FOOT WATER TANKS.  A
 HU0587'STANDARD DISK, STAMPED F 8 1935 AND SET IN THE TOP OF A CONCRETE
 HU0587'POST PROJECTING 2 INCHES ABOVE THE GROUND.
 HU0587
 HU0587                          STATION RECOVERY (1963)
 HU0587
 HU0587'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963
 HU0587'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0228 ***********************************************************************
 JV0228  DESIGNATION -  F 80
 JV0228  PID         -  JV0228
 JV0228  STATE/COUNTY-  MD/HARFORD
 JV0228  COUNTRY     -  US
 JV0228  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0228
 JV0228                         *CURRENT SURVEY CONTROL
 JV0228  ______________________________________________________________________
 JV0228* NAD 83(1986) POSITION- 39 35 21.     (N) 076 28 25.     (W)   SCALED
 JV0228* NAVD 88 ORTHO HEIGHT -   185.534 (meters)      608.71  (feet) ADJUSTED
 JV0228  ______________________________________________________________________
 JV0228  GEOID HEIGHT    -        -32.538 (meters)                     GEOID18
 JV0228  DYNAMIC HEIGHT  -        185.438 (meters)      608.39  (feet) COMP
 JV0228  MODELED GRAVITY -    980,108.2   (mgal)                       NAVD 88
 JV0228
 JV0228  VERT ORDER      -  FIRST     CLASS II
 JV0228
 JV0228.The horizontal coordinates were scaled from a map and have
 JV0228.an estimated accuracy of +/- 6 seconds.
 JV0228
 JV0228.The orthometric height was determined by differential leveling and
 JV0228.adjusted by the NATIONAL GEODETIC SURVEY
 JV0228.in June 1991.
 JV0228
 JV0228.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0228.GEOID18 height accuracy estimate available here.
 JV0228
 JV0228.Click photographs - Photos may exist for this station.
 JV0228
 JV0228.The dynamic height is computed by dividing the NAVD 88
 JV0228.geopotential number by the normal gravity value computed on the
 JV0228.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0228.degrees latitude (g = 980.6199 gals.).
 JV0228
 JV0228.The modeled gravity was interpolated from observed gravity values.
 JV0228
 JV0228;                    North         East    Units  Estimated Accuracy
 JV0228;SPC MD       -   213,550.      445,220.      MT  (+/- 180 meters Scaled)
 JV0228
 JV0228_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ734831(NAD 83)
 JV0228
 JV0228                          SUPERSEDED SURVEY CONTROL
 JV0228
 JV0228  NGVD 29 (11/26/84)  185.776  (m)          609.50   (f) ADJUSTED    1 2
 JV0228
 JV0228.Superseded values are not recommended for survey control.
 JV0228
 JV0228.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0228.See file dsdata.pdf to determine how the superseded data were derived.
 JV0228
 JV0228_MARKER: DB = BENCH MARK DISK
 JV0228_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0228_STAMPING: F 80 1942
 JV0228_MARK LOGO: CGS
 JV0228_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0228_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0228+STABILITY: SURFACE MOTION
 JV0228_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0228+SATELLITE: SATELLITE OBSERVATIONS - October 12, 1989
 JV0228
 JV0228  HISTORY     - Date     Condition        Report By
 JV0228  HISTORY     - 1942     MONUMENTED       CGS
 JV0228  HISTORY     - 1971     GOOD             NGS
 JV0228  HISTORY     - 19891012 GOOD             NGS
 JV0228  HISTORY     - 20010103 GOOD             MDSHA
 JV0228
 JV0228                          STATION DESCRIPTION
 JV0228
 JV0228'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0228'3.7 MI NE FROM UPPER CROSSROADS.
 JV0228'ABOUT 3.7 MILES NORTHEAST ALONG HIGHWAY 165 FROM THE INTERSECTION
 JV0228'AT UPPER CROSSROADS, HARFORD COUNTY, 35.7 FEET EAST OF THE CENTER
 JV0228'LINE OF THE HIGHWAY, 32.0 FEET SOUTHEAST OF HIGHWAY MARKER NUMBER
 JV0228'71, SET IN LINE WITH A HIGH TENSION POWER LINE, 7.0 FEET SOUTHWEST
 JV0228'OF THE EAST CORNER OF TOWER NUMBER S.T.CO. 187, ABOUT 6.0 FEET
 JV0228'HIGHER THAN THE HIGHWAY, 2.0 FEET NORTHWEST OF A STANDARD
 JV0228'REFERENCE POST, STAMPED F 80 1942.
 JV0228
 JV0228                          STATION RECOVERY (1971)
 JV0228
 JV0228'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0228'RECOVERED IN GOOD CONDITION.
 JV0228
 JV0228                          STATION RECOVERY (1989)
 JV0228
 JV0228'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0228'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  1.7 KM
 JV0228'(1.05 MI) SOUTHERLY ALONG STATE HIGHWAY 165 FROM ITS JUNCTION WITH
 JV0228'STATE HIGHWAY 23 IN JARRETTSVILLE, 10.7 M (35.1 FT) EAST OF THE
 JV0228'CENTERLINE OF THE HIGHWAY, 4.1 M (13.5 FT) SOUTHEAST OF THE WEST LEG
 JV0228'OF THE MOST NORTHWESTERLY 1 OF 2 HIGHLINE TOWERS, 2.1 M (6.9 FT) WEST
 JV0228'OF THE SOUTH LEG OF THE MOST NORTHWESTERLY 1 OF 2 HIGHLINE TOWERS,
 JV0228'1.0 M (3.3 FT) ABOVE THE LEVEL OF THE HIGHWAY, 0.3 M (1.0 FT) NORTH
 JV0228'OF A WITNESS POST, AND IN A CONCRETE MONUMENT THAT IS 0.1 M (0.3 FT)
 JV0228'BELOW THE GROUND SURFACE.
 JV0228
 JV0228                          STATION RECOVERY (2001)
 JV0228
 JV0228'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV0228'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1657 ***********************************************************************
 JV1657  DESIGNATION -  F 81
 JV1657  PID         -  JV1657
 JV1657  STATE/COUNTY-  MD/CARROLL
 JV1657  COUNTRY     -  US
 JV1657  USGS QUAD   -  MANCHESTER (2016)
 JV1657
 JV1657                         *CURRENT SURVEY CONTROL
 JV1657  ______________________________________________________________________
 JV1657* NAD 83(1986) POSITION- 39 41 45.     (N) 076 56 19.     (W)   SCALED
 JV1657* NAVD 88 ORTHO HEIGHT -   302.963 (meters)      993.97  (feet) ADJUSTED
 JV1657  ______________________________________________________________________
 JV1657  GEOID HEIGHT    -        -32.524 (meters)                     GEOID18
 JV1657  DYNAMIC HEIGHT  -        302.807 (meters)      993.46  (feet) COMP
 JV1657  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 JV1657
 JV1657  VERT ORDER      -  SECOND    CLASS 0
 JV1657
 JV1657.The horizontal coordinates were scaled from a map and have
 JV1657.an estimated accuracy of +/- 6 seconds.
 JV1657
 JV1657.The orthometric height was determined by differential leveling and
 JV1657.adjusted by the NATIONAL GEODETIC SURVEY
 JV1657.in June 1991.
 JV1657
 JV1657.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1657.GEOID18 height accuracy estimate available here.
 JV1657
 JV1657.Click photographs - Photos may exist for this station.
 JV1657
 JV1657.The dynamic height is computed by dividing the NAVD 88
 JV1657.geopotential number by the normal gravity value computed on the
 JV1657.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1657.degrees latitude (g = 980.6199 gals.).
 JV1657
 JV1657.The modeled gravity was interpolated from observed gravity values.
 JV1657
 JV1657;                    North         East    Units  Estimated Accuracy
 JV1657;SPC MD       -   225,260.      405,270.      MT  (+/- 180 meters Scaled)
 JV1657
 JV1657_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ337957(NAD 83)
 JV1657
 JV1657                          SUPERSEDED SURVEY CONTROL
 JV1657
 JV1657  NGVD 29 (11/26/84)  303.165  (m)          994.63   (f) ADJUSTED    2 0
 JV1657
 JV1657.Superseded values are not recommended for survey control.
 JV1657
 JV1657.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1657.See file dsdata.pdf to determine how the superseded data were derived.
 JV1657
 JV1657_MARKER: DB = BENCH MARK DISK
 JV1657_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1657_STAMPING: F 81 1942
 JV1657_MARK LOGO: CGS
 JV1657_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1657+STABILITY: SURFACE MOTION
 JV1657
 JV1657  HISTORY     - Date     Condition        Report By
 JV1657  HISTORY     - 1942     MONUMENTED       CGS
 JV1657  HISTORY     - 1967     GOOD             CGS
 JV1657  HISTORY     - 20031008 MARK NOT FOUND   PADT
 JV1657
 JV1657                          STATION DESCRIPTION
 JV1657
 JV1657'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1657'5.9 MI E FROM UNION MILLS.
 JV1657'5.9 MILES EAST ALONG DEEP RUN ROAD FROM THE POST OFFICE AT
 JV1657'UNION MILLS, CARROLL COUNTY, AT THE EDGE OF A WOODS, 51 FEET
 JV1657'EAST OF A FIELD, AT THE JUNCTION OF A FARM ROAD LEADING SOUTH,
 JV1657'43.6 FEET EAST OF THE CENTER LINE OF THE FARM ROAD, 32 FEET
 JV1657'SOUTH OF THE CENTER LINE OF DEEP RUN ROAD, AND NEAR A WHITE WOODEN
 JV1657'WITNESS POST.  A STANDARD DISK, STAMPED F 81 1942 AND SET IN THE
 JV1657'TOP OF A CONCRETE POST.
 JV1657
 JV1657                          STATION RECOVERY (1967)
 JV1657
 JV1657'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JV1657'RECOVERED IN GOOD CONDITION.
 JV1657
 JV1657                          STATION RECOVERY (2003)
 JV1657
 JV1657'RECOVERY NOTE BY PA DEPT OF TRANSP 2003 (LJM)
 JV1657'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1979 ***********************************************************************
 JV1979  DESIGNATION -  F 82
 JV1979  PID         -  JV1979
 JV1979  STATE/COUNTY-  MD/FREDERICK
 JV1979  COUNTRY     -  US
 JV1979  USGS QUAD   -  EMMITSBURG (2016)
 JV1979
 JV1979                         *CURRENT SURVEY CONTROL
 JV1979  ______________________________________________________________________
 JV1979* NAD 83(1986) POSITION- 39 42 43.6    (N) 077 18 43.9    (W)   HD_HELD2
 JV1979* NAVD 88 ORTHO HEIGHT -   141.125 (meters)      463.01  (feet) ADJUSTED
 JV1979  ______________________________________________________________________
 JV1979  GEOID HEIGHT    -        -33.355 (meters)                     GEOID18
 JV1979  DYNAMIC HEIGHT  -        141.049 (meters)      462.76  (feet) COMP
 JV1979  MODELED GRAVITY -    980,085.7   (mgal)                       NAVD 88
 JV1979
 JV1979  VERT ORDER      -  SECOND    CLASS I
 JV1979
 JV1979.The horizontal coordinates were established by autonomous hand held GPS
 JV1979.observations and have an estimated accuracy of +/- 10 meters.
 JV1979
 JV1979.The orthometric height was determined by differential leveling and
 JV1979.adjusted by the NATIONAL GEODETIC SURVEY
 JV1979.in June 1991.
 JV1979
 JV1979.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1979.GEOID18 height accuracy estimate available here.
 JV1979
 JV1979.Click photographs - Photos may exist for this station.
 JV1979
 JV1979.The dynamic height is computed by dividing the NAVD 88
 JV1979.geopotential number by the normal gravity value computed on the
 JV1979.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1979.degrees latitude (g = 980.6199 gals.).
 JV1979
 JV1979.The modeled gravity was interpolated from observed gravity values.
 JV1979
 JV1979;                    North         East    Units  Estimated Accuracy
 JV1979;SPC MD       -   227,112.      373,227.      MT  (+/- 10 meters HH2 GPS)
 JV1979
 JV1979_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0179598361(NAD 83)
 JV1979
 JV1979                          SUPERSEDED SURVEY CONTROL
 JV1979
 JV1979  NGVD 29 (11/26/84)  141.318  (m)          463.64   (f) ADJUSTED    2 0
 JV1979
 JV1979.Superseded values are not recommended for survey control.
 JV1979
 JV1979.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1979.See file dsdata.pdf to determine how the superseded data were derived.
 JV1979
 JV1979_MARKER: DB = BENCH MARK DISK
 JV1979_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1979_STAMPING: F 82 1942
 JV1979_MARK LOGO: CGS
 JV1979_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1979_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1979+STABILITY: SURFACE MOTION
 JV1979_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1979+SATELLITE: SATELLITE OBSERVATIONS - March 23, 2016
 JV1979
 JV1979  HISTORY     - Date     Condition        Report By
 JV1979  HISTORY     - 1942     MONUMENTED       CGS
 JV1979  HISTORY     - 1990     GOOD             USPSQD
 JV1979  HISTORY     - 20010606 GOOD             MDSHA
 JV1979  HISTORY     - 20050829 GOOD             GEOCAC
 JV1979  HISTORY     - 20110326 GOOD             GEOCAC
 JV1979  HISTORY     - 20160323 GOOD             GEOCAC
 JV1979
 JV1979                          STATION DESCRIPTION
 JV1979
 JV1979'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1979'1 MI NE FROM EMMITSBURG.
 JV1979'1.0 MILE NORTHEAST ALONG U.S. HIGHWAY 15 FROM THE POST OFFICE AT
 JV1979'EMMITSBURG, FREDERICK COUNTY, 74 FEET SOUTHWEST OF THE SOUTHWEST
 JV1979'CORNER OF A TWO-STORY YELLOW HOUSE, 48.5 FEET SOUTHWEST OF A
 JV1979'POLE, 30.4 FEET SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, 7.9
 JV1979'FEET NORTH OF A 6-INCH LOCUST TREE, AND 6.5 FEET EAST OF A FENCE
 JV1979'CORNER.  A STANDARD DISK, STAMPED F 82 1942 AND SET IN THE TOP
 JV1979'OF A CONCRETE POST.
 JV1979
 JV1979                          STATION RECOVERY (1990)
 JV1979
 JV1979'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1979'RECOVERED IN GOOD CONDITION.
 JV1979
 JV1979                          STATION RECOVERY (2001)
 JV1979
 JV1979'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1979'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE STATION IS LOCATED
 JV1979'1.0 MILES (1.6 KM) NORTHEAST ALONG OLD U.S.  HIGHWAY 15 (SETON AVENUE)
 JV1979'FROM STATE HIGHWAY 140 (MAIN STREET) IN EMMITSBURG.
 JV1979
 JV1979                          STATION RECOVERY (2005)
 JV1979
 JV1979'RECOVERY NOTE BY GEOCACHING 2005 (RCF)
 JV1979'1.0 MILE NORTHEAST ALONG N SETON AVE FROM EMMITSBURG, 74 FEET
 JV1979'SOUTHWEST OF THE SOUTHWEST CORNER OF A TWO-STORY BLUE HOUSE, 48.5 FEET
 JV1979'SOUTHWEST OF A POLE, 30.4 FEET SOUTHEAST OF THE CENTER LINE OF THE
 JV1979'HIGHWAY, AND ALONG A WOOD FENCE. A STANDARD DISK, STAMPED F 82 1942
 JV1979'AND SET IN THE TOP OF A CONCRETE POST THAT PROJECTS 6 INCHES.
 JV1979
 JV1979                          STATION RECOVERY (2011)
 JV1979
 JV1979'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JV1979'RECOVERED AS DESCRIBED.
 JV1979
 JV1979                          STATION RECOVERY (2016)
 JV1979
 JV1979'RECOVERY NOTE BY GEOCACHING 2016 (LJB)
 JV1979'OCCUPIED FOR THE 2016 GPS ON BENCHMARKS CAMPAIGN
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1216 ***********************************************************************
 HV1216  DESIGNATION -  F 84
 HV1216  PID         -  HV1216
 HV1216  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1216  COUNTRY     -  US
 HV1216  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1216
 HV1216                         *CURRENT SURVEY CONTROL
 HV1216  ______________________________________________________________________
 HV1216* NAD 83(1986) POSITION- 38 53 15.     (N) 076 53 34.     (W)   SCALED
 HV1216* NAVD 88 ORTHO HEIGHT -    33.099 (meters)      108.59  (feet) ADJUSTED
 HV1216  ______________________________________________________________________
 HV1216  GEOID HEIGHT    -        -32.378 (meters)                     GEOID18
 HV1216  DYNAMIC HEIGHT  -         33.081 (meters)      108.53  (feet) COMP
 HV1216  MODELED GRAVITY -    980,079.1   (mgal)                       NAVD 88
 HV1216
 HV1216  VERT ORDER      -  SECOND    CLASS 0
 HV1216
 HV1216.The horizontal coordinates were scaled from a map and have
 HV1216.an estimated accuracy of +/- 6 seconds.
 HV1216
 HV1216.The orthometric height was determined by differential leveling and
 HV1216.adjusted by the NATIONAL GEODETIC SURVEY
 HV1216.in June 1991.
 HV1216
 HV1216.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1216.GEOID18 height accuracy estimate available here.
 HV1216
 HV1216.Click photographs - Photos may exist for this station.
 HV1216
 HV1216.The dynamic height is computed by dividing the NAVD 88
 HV1216.geopotential number by the normal gravity value computed on the
 HV1216.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1216.degrees latitude (g = 980.6199 gals.).
 HV1216
 HV1216.The modeled gravity was interpolated from observed gravity values.
 HV1216
 HV1216;                    North         East    Units  Estimated Accuracy
 HV1216;SPC MD       -   135,520.      409,300.      MT  (+/- 180 meters Scaled)
 HV1216
 HV1216_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ358059(NAD 83)
 HV1216
 HV1216                          SUPERSEDED SURVEY CONTROL
 HV1216
 HV1216  NGVD 29 (11/26/84)   33.355  (m)          109.43   (f) ADJUSTED    2 0
 HV1216
 HV1216.Superseded values are not recommended for survey control.
 HV1216
 HV1216.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1216.See file dsdata.pdf to determine how the superseded data were derived.
 HV1216
 HV1216_MARKER: DB = BENCH MARK DISK
 HV1216_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 HV1216_SP_SET: BRIDGE WINGWALL
 HV1216_STAMPING: F 84 1942
 HV1216_MARK LOGO: CGS
 HV1216_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1216
 HV1216  HISTORY     - Date     Condition        Report By
 HV1216  HISTORY     - 1942     MONUMENTED       CGS
 HV1216  HISTORY     - 19781102 GOOD             NGS
 HV1216
 HV1216                          STATION DESCRIPTION
 HV1216
 HV1216'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1216'0.6 MI E FROM SEAT PLEASANT.
 HV1216'0.6 MILE EAST ALONG CENTRAL AVENUE FROM LYNDON HILL SCHOOL NEAR
 HV1216'SEAT PLEASANT, 0.3 MILE EAST OF A ROAD LEADING NORTH TO THE
 HV1216'SEAT PLEASANT BUSINESS DISTRICT, SET IN THE TOP OF THE NORTHWEST
 HV1216'WING WALL OF A CONCRETE HIGHWAY BRIDGE OVER A SMALL STREAM.
 HV1216
 HV1216                          STATION RECOVERY (1978)
 HV1216
 HV1216'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (RGP)
 HV1216'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7956 ***********************************************************************
 HV7956  DESIGNATION -  F 84 RESET
 HV7956  PID         -  HV7956
 HV7956  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7956  COUNTRY     -  US
 HV7956  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7956
 HV7956                         *CURRENT SURVEY CONTROL
 HV7956  ______________________________________________________________________
 HV7956* NAD 83(1986) POSITION- 38 53 15.     (N) 076 53 34.     (W)   SCALED
 HV7956* NAVD 88 ORTHO HEIGHT -    34.68  (+/-2cm)      113.8   (feet) VERTCON3
 HV7956  ______________________________________________________________________
 HV7956  GEOID HEIGHT    -        -32.378 (meters)                     GEOID18
 HV7956  VERT ORDER      -  THIRD (See Below)
 HV7956
 HV7956.The horizontal coordinates were scaled from a map and have
 HV7956.an estimated accuracy of +/- 6 seconds.
 HV7956
 HV7956.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7956.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7956
 HV7956.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7956.GEOID18 height accuracy estimate available here.
 HV7956
 HV7956.The vertical order pertains to the NGVD 29 superseded value.
 HV7956
 HV7956.Click photographs - Photos may exist for this station.
 HV7956
 HV7956;                    North         East    Units  Estimated Accuracy
 HV7956;SPC MD       -   135,520.      409,300.      MT  (+/- 180 meters Scaled)
 HV7956
 HV7956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ358059(NAD 83)
 HV7956
 HV7956                          SUPERSEDED SURVEY CONTROL
 HV7956
 HV7956  NGVD 29 (??/??/??)   34.93   (m)          114.6    (f) RESET       3  
 HV7956
 HV7956.Superseded values are not recommended for survey control.
 HV7956
 HV7956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7956.See file dsdata.pdf to determine how the superseded data were derived.
 HV7956
 HV7956_MARKER: DV = VERTICAL CONTROL DISK
 HV7956_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV7956_SP_SET: CONRAIL ABUTMENT
 HV7956_STAMPING: F 84 RESET 1978
 HV7956_MARK LOGO: NGS
 HV7956_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7956
 HV7956  HISTORY     - Date     Condition        Report By
 HV7956  HISTORY     - 1978     MONUMENTED       NGS
 HV7956  HISTORY     - 19791102 GOOD             NGS
 HV7956
 HV7956                          STATION DESCRIPTION
 HV7956
 HV7956'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 HV7956'0.6 MILES (1.0 KM) EAST ALONG CENTRAL AVENUE FROM THE LYNDON HILL
 HV7956'SCHOOL, NEAR SEAT PLEASANT, AT THE CONRAIL ABUTMENT, 250 FEET (76.2 M)
 HV7956'SOUTHWEST, 2.55 MILES (4.10 KM) WEST ALONG ROUTE 214 FROM 495, 225
 HV7956'FEET (68.6 M) SOUTHWEST OF CENTERLINE OF JUNCTION CABIN BRANCH ROAD
 HV7956'AND ROUTE 214, 91 FEET (27.7 M) WEST OF CENTERLINE OF CABIN BRANCH
 HV7956'ROAD, 2.2 FEET (0.7 M) WEST OF NORTHWEST CORNER OF EAST EXTENSION OF
 HV7956'ABUTMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1155 ***********************************************************************
 HV1155  DESIGNATION -  F 85
 HV1155  PID         -  HV1155
 HV1155  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1155  COUNTRY     -  US
 HV1155  USGS QUAD   -  BRISTOL (2016)
 HV1155
 HV1155                         *CURRENT SURVEY CONTROL
 HV1155  ______________________________________________________________________
 HV1155* NAD 83(1986) POSITION- 38 49 40.     (N) 076 44 42.     (W)   SCALED
 HV1155* NAVD 88 ORTHO HEIGHT -     9.768 (meters)       32.05  (feet) ADJUSTED
 HV1155  ______________________________________________________________________
 HV1155  GEOID HEIGHT    -        -32.915 (meters)                     GEOID18
 HV1155  DYNAMIC HEIGHT  -          9.763 (meters)       32.03  (feet) COMP
 HV1155  MODELED GRAVITY -    980,069.7   (mgal)                       NAVD 88
 HV1155
 HV1155  VERT ORDER      -  FIRST     CLASS I
 HV1155
 HV1155.The horizontal coordinates were scaled from a map and have
 HV1155.an estimated accuracy of +/- 6 seconds.
 HV1155
 HV1155.The orthometric height was determined by differential leveling and
 HV1155.adjusted by the NATIONAL GEODETIC SURVEY
 HV1155.in June 1991.
 HV1155
 HV1155.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1155.GEOID18 height accuracy estimate available here.
 HV1155
 HV1155.Click photographs - Photos may exist for this station.
 HV1155
 HV1155.The dynamic height is computed by dividing the NAVD 88
 HV1155.geopotential number by the normal gravity value computed on the
 HV1155.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1155.degrees latitude (g = 980.6199 gals.).
 HV1155
 HV1155.The modeled gravity was interpolated from observed gravity values.
 HV1155
 HV1155;                    North         East    Units  Estimated Accuracy
 HV1155;SPC MD       -   128,920.      422,140.      MT  (+/- 180 meters Scaled)
 HV1155
 HV1155_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH485991(NAD 83)
 HV1155
 HV1155                          SUPERSEDED SURVEY CONTROL
 HV1155
 HV1155  NGVD 29 (11/26/84)   10.004  (m)           32.82   (f) ADJUSTED    1 1
 HV1155
 HV1155.Superseded values are not recommended for survey control.
 HV1155
 HV1155.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1155.See file dsdata.pdf to determine how the superseded data were derived.
 HV1155
 HV1155_MARKER: DB = BENCH MARK DISK
 HV1155_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV1155_SP_SET: CULVERT
 HV1155_STAMPING: F 85 1942
 HV1155_MARK LOGO: CGS
 HV1155_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1155
 HV1155  HISTORY     - Date     Condition        Report By
 HV1155  HISTORY     - 1942     MONUMENTED       CGS
 HV1155  HISTORY     - 1971     GOOD             NGS
 HV1155  HISTORY     - 1975     GOOD             NGS
 HV1155
 HV1155                          STATION DESCRIPTION
 HV1155
 HV1155'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1155'1 MI NE FROM UPPER MARLBORO.
 HV1155'ABOUT 0.55 MILE NORTHEAST ALONG MAIN STREET FROM THE POST OFFICE
 HV1155'AT UPPER MARLBORO, THENCE 0.5 MILE NORTH ALONG THE PENN CENTRAL
 HV1155'RAILROAD, SET IN THE TOP AND 3.2 FEET NORTH OF THE SOUTH END OF
 HV1155'THE WEST CONCRETE HEADWALL OF A 3-FOOT CONCRETE CULVERT UNDER THE
 HV1155'TRACK, 9 FEET WEST OF THE WEST RAIL, AND ABOUT 1 FOOT BELOW THE
 HV1155'LEVEL OF THE TRACK.
 HV1155
 HV1155                          STATION RECOVERY (1975)
 HV1155
 HV1155'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV1155'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1077 ***********************************************************************
 HV1077  DESIGNATION -  F 86
 HV1077  PID         -  HV1077
 HV1077  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1077  COUNTRY     -  US
 HV1077  USGS QUAD   -  PISCATAWAY (2016)
 HV1077
 HV1077                         *CURRENT SURVEY CONTROL
 HV1077  ______________________________________________________________________
 HV1077* NAD 83(1986) POSITION- 38 44 14.     (N) 076 56 30.     (W)   SCALED
 HV1077* NAVD 88 ORTHO HEIGHT -    70.567 (meters)      231.52  (feet) ADJUSTED
 HV1077  ______________________________________________________________________
 HV1077  GEOID HEIGHT    -        -32.536 (meters)                     GEOID18
 HV1077  DYNAMIC HEIGHT  -         70.527 (meters)      231.39  (feet) COMP
 HV1077  MODELED GRAVITY -    980,071.6   (mgal)                       NAVD 88
 HV1077
 HV1077  VERT ORDER      -  SECOND    CLASS 0
 HV1077
 HV1077.The horizontal coordinates were scaled from a map and have
 HV1077.an estimated accuracy of +/- 6 seconds.
 HV1077
 HV1077.The orthometric height was determined by differential leveling and
 HV1077.adjusted by the NATIONAL GEODETIC SURVEY
 HV1077.in June 1991.
 HV1077
 HV1077.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1077.GEOID18 height accuracy estimate available here.
 HV1077
 HV1077.Click photographs - Photos may exist for this station.
 HV1077
 HV1077.The dynamic height is computed by dividing the NAVD 88
 HV1077.geopotential number by the normal gravity value computed on the
 HV1077.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1077.degrees latitude (g = 980.6199 gals.).
 HV1077
 HV1077.The modeled gravity was interpolated from observed gravity values.
 HV1077
 HV1077;                    North         East    Units  Estimated Accuracy
 HV1077;SPC MD       -   118,840.      405,070.      MT  (+/- 180 meters Scaled)
 HV1077
 HV1077_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH312894(NAD 83)
 HV1077
 HV1077                          SUPERSEDED SURVEY CONTROL
 HV1077
 HV1077  NGVD 29 (05/01/89)   70.803  (m)          232.29   (f) ADJUSTED    2 0
 HV1077  NGVD 29 (??/??/87)   70.831  (m)          232.38   (f) SUPERSEDED  2 0
 HV1077
 HV1077.Superseded values are not recommended for survey control.
 HV1077
 HV1077.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1077.See file dsdata.pdf to determine how the superseded data were derived.
 HV1077
 HV1077_MARKER: DB = BENCH MARK DISK
 HV1077_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1077_STAMPING: F 86 1942
 HV1077_MARK LOGO: CGS
 HV1077_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1077+STABILITY: SURFACE MOTION
 HV1077
 HV1077  HISTORY     - Date     Condition        Report By
 HV1077  HISTORY     - 1942     MONUMENTED       CGS
 HV1077
 HV1077                          STATION DESCRIPTION
 HV1077
 HV1077'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1077'3.3 MI SW FROM CLINTON.
 HV1077'3.3 MILES SOUTHWEST ALONG THE PISCATAWAY ROAD FROM THE MAIN
 HV1077'INTERSECTION AT CLINTON, 1.0 MILE SOUTHWEST OF HYDE FIELD AIR
 HV1077'STATION, AT THE JOSEPH TAYLOR GENERAL STORE, 77 FEET SOUTHWEST
 HV1077'OF THE SOUTHWEST CORNER OF THE STORE BUILDING, 132.3 FEET
 HV1077'WEST-SOUTHWEST OF THE SOUTHWEST CORNER OF THE SHINGLE-COVERED
 HV1077'TWO-STORY HOUSE OCCUPIED BY MR. TAYLOR, 40.7 FEET SOUTHEAST
 HV1077'OF THE CENTERLINE OF THE ROAD, 20 FEET SOUTHEAST OF A LINE OF
 HV1077'POWER POLES, IN LINE WITH THE FRONT OF THE STORE BUILDING, AND
 HV1077'ONE FOOT NORTHEAST OF A WIRE-FENCE LINE.  NOTE-- IT WAS REPORTED
 HV1077'BY TELEPHONE ON JANUARY 30, 1963 THAT THE MARK WAS DUG UP AND
 HV1077'MOVED.  PROBABLY RESET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2550 ***********************************************************************
 JV2550  DESIGNATION -  F 87
 JV2550  PID         -  JV2550
 JV2550  STATE/COUNTY-  MD/HOWARD
 JV2550  COUNTRY     -  US
 JV2550  USGS QUAD   -  DAMASCUS (2016)
 JV2550
 JV2550                         *CURRENT SURVEY CONTROL
 JV2550  ______________________________________________________________________
 JV2550* NAD 83(1986) POSITION- 39 20 46.4    (N) 077 09 29.2    (W)   HD_HELD2
 JV2550* NAVD 88 ORTHO HEIGHT -   245.612 (meters)      805.81  (feet) ADJUSTED
 JV2550  ______________________________________________________________________
 JV2550  GEOID HEIGHT    -        -31.891 (meters)                     GEOID18
 JV2550  DYNAMIC HEIGHT  -        245.483 (meters)      805.39  (feet) COMP
 JV2550  MODELED GRAVITY -    980,094.1   (mgal)                       NAVD 88
 JV2550
 JV2550  VERT ORDER      -  SECOND    CLASS I
 JV2550
 JV2550.The horizontal coordinates were established by autonomous hand held GPS
 JV2550.observations and have an estimated accuracy of +/- 10 meters.
 JV2550
 JV2550.The orthometric height was determined by differential leveling and
 JV2550.adjusted by the NATIONAL GEODETIC SURVEY
 JV2550.in June 1991.
 JV2550
 JV2550.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2550.GEOID18 height accuracy estimate available here.
 JV2550
 JV2550.Click photographs - Photos may exist for this station.
 JV2550
 JV2550.The dynamic height is computed by dividing the NAVD 88
 JV2550.geopotential number by the normal gravity value computed on the
 JV2550.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2550.degrees latitude (g = 980.6199 gals.).
 JV2550
 JV2550.The modeled gravity was interpolated from observed gravity values.
 JV2550
 JV2550;                    North         East    Units  Estimated Accuracy
 JV2550;SPC MD       -   186,454.      386,371.      MT  (+/- 10 meters HH2 GPS)
 JV2550
 JV2550_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1403057419(NAD 83)
 JV2550
 JV2550                          SUPERSEDED SURVEY CONTROL
 JV2550
 JV2550  NGVD 29 (11/26/84)  245.814  (m)          806.47   (f) ADJUSTED    2 0
 JV2550
 JV2550.Superseded values are not recommended for survey control.
 JV2550
 JV2550.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2550.See file dsdata.pdf to determine how the superseded data were derived.
 JV2550
 JV2550_MARKER: DB = BENCH MARK DISK
 JV2550_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2550_STAMPING: F 87 1942
 JV2550_MARK LOGO: CGS
 JV2550_PROJECTION: PROJECTING 5 CENTIMETERS
 JV2550_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV2550_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2550+STABILITY: SURFACE MOTION
 JV2550_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2550+SATELLITE: SATELLITE OBSERVATIONS - May 30, 2007
 JV2550
 JV2550  HISTORY     - Date     Condition        Report By
 JV2550  HISTORY     - 1942     MONUMENTED       CGS
 JV2550  HISTORY     - 1969     GOOD             CGS
 JV2550  HISTORY     - 1985     GOOD             LOCSUR
 JV2550  HISTORY     - 20070530 GOOD             MDSHA
 JV2550
 JV2550                          STATION DESCRIPTION
 JV2550
 JV2550'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2550'2.5 MI S FROM MOUNT AIRY.
 JV2550'2.5 MILES SOUTH ALONG THE LONG CORNER ROAD FROM THE BALTIMORE AND
 JV2550'OHIO RAILROAD STATION AT MOUNT AIRY, HOWARD COUNTY, 1.0 MILE
 JV2550'NORTH OF THE PUBLIC SCHOOL AT LONG CORNER, AT THE Y-JUNCTION OF
 JV2550'DIRT ROADS (ONE LEADS NORTH TO MOUNT AIRY, ONE LEADS SOUTHEAST
 JV2550'TO LONG CORNER, AND ONE LEADS WEST TO RIDGEVILLE), 40 FEET EAST
 JV2550'OF THE CENTER OF THE TRIANGULAR PLOT OF GROUND FORMED BY THE
 JV2550'FORKS OF THE ROADS, 32 FEET NORTH OF POLE 40, ON THE EAST SIDE
 JV2550'OF THE LONG CORNER ROAD, AND 5.3 FEET EAST OF A 10-INCH WHITE
 JV2550'OAK TREE.  A STANDARD DISK, STAMPED F 87 1942 AND SET IN THE
 JV2550'TOP OF A CONCRETE POST.
 JV2550
 JV2550                          STATION RECOVERY (1969)
 JV2550
 JV2550'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969
 JV2550'RECOVERED IN GOOD CONDITION.
 JV2550
 JV2550                          STATION RECOVERY (1985)
 JV2550
 JV2550'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1985
 JV2550'RECOVERED IN GOOD CONDITION.
 JV2550
 JV2550                          STATION RECOVERY (2007)
 JV2550
 JV2550'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV2550'THE STATION IS LOCATED ABOUT 3.3 MI (5.3 KM) WEST OF POPLAR SPRINGS,
 JV2550'2.9 MI (4.7 KM) NORTHEAST OF CLAGGETTSVILLE AND 2.2 MI (3.5 KM) SOUTH
 JV2550'OF MOUNT AIRY.
 JV2550'
 JV2550'TO REACH FROM THE INTERSTATE HIGHWAY 70 BRIDGE OVER STATE HIGHWAY 27,
 JV2550'GO SOUTH ON STATE HIGHWAY 27 FOR 0.65 MI (1.0 KM) TO A SIDE ROAD ON
 JV2550'THE LEFT.  TURN LEFT AND GO EAST ON PENN SHOP ROAD FOR 1.0 MI (1.6 KM)
 JV2550'TO BENNETT ROAD LEADING NORTHEAST AND THE STATION ON THE LEFT.
 JV2550'
 JV2550'IT IS 33.5 FT (10.2 M) NORTHEAST OF THE CENTERLINE OF PENN SHOP ROAD,
 JV2550'28.5 FT (8.7 M) NORTHWEST OF C AND P POWER POLE NUMBER 31, 38.5 FT
 JV2550'(11.7 M) SOUTHEAST OF THE CENTERLINE OF BENNETT ROAD, 1.0 FT (0.3 M)
 JV2550'WEST OF A FIBERGLASS WITNESS AND SET IN THE TOP OF A 6-IN (15 CM)
 JV2550'SQUARE CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2960 ***********************************************************************
 JV2960  DESIGNATION -  F 88
 JV2960  PID         -  JV2960
 JV2960  STATE/COUNTY-  MD/FREDERICK
 JV2960  COUNTRY     -  US
 JV2960  USGS QUAD   -  MIDDLETOWN (2016)
 JV2960
 JV2960                         *CURRENT SURVEY CONTROL
 JV2960  ______________________________________________________________________
 JV2960* NAD 83(1986) POSITION- 39 26 09.     (N) 077 31 20.     (W)   SCALED
 JV2960* NAVD 88 ORTHO HEIGHT -   185.439 (meters)      608.39  (feet) ADJUSTED
 JV2960  ______________________________________________________________________
 JV2960  GEOID HEIGHT    -        -32.968 (meters)                     GEOID18
 JV2960  DYNAMIC HEIGHT  -        185.336 (meters)      608.06  (feet) COMP
 JV2960  MODELED GRAVITY -    980,067.3   (mgal)                       NAVD 88
 JV2960
 JV2960  VERT ORDER      -  SECOND    CLASS 0
 JV2960
 JV2960.The horizontal coordinates were scaled from a map and have
 JV2960.an estimated accuracy of +/- 6 seconds.
 JV2960
 JV2960.The orthometric height was determined by differential leveling and
 JV2960.adjusted by the NATIONAL GEODETIC SURVEY
 JV2960.in June 1991.
 JV2960
 JV2960.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2960.GEOID18 height accuracy estimate available here.
 JV2960
 JV2960.Click photographs - Photos may exist for this station.
 JV2960
 JV2960.The dynamic height is computed by dividing the NAVD 88
 JV2960.geopotential number by the normal gravity value computed on the
 JV2960.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2960.degrees latitude (g = 980.6199 gals.).
 JV2960
 JV2960.The modeled gravity was interpolated from observed gravity values.
 JV2960
 JV2960;                    North         East    Units  Estimated Accuracy
 JV2960;SPC MD       -   196,520.      355,040.      MT  (+/- 180 meters Scaled)
 JV2960
 JV2960_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ829681(NAD 83)
 JV2960
 JV2960                          SUPERSEDED SURVEY CONTROL
 JV2960
 JV2960  NGVD 29 (11/26/84)  185.653  (m)          609.10   (f) ADJUSTED    2 0
 JV2960
 JV2960.Superseded values are not recommended for survey control.
 JV2960
 JV2960.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2960.See file dsdata.pdf to determine how the superseded data were derived.
 JV2960
 JV2960_MARKER: DD = SURVEY DISK
 JV2960_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2960_STAMPING: F 88 1942
 JV2960_MARK LOGO: CGS+SS
 JV2960_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2960+STABILITY: SURFACE MOTION
 JV2960
 JV2960  HISTORY     - Date     Condition        Report By
 JV2960  HISTORY     - 1942     MONUMENTED       MDGS
 JV2960  HISTORY     - 1942     GOOD             CGS
 JV2960  HISTORY     - 20071228 MARK NOT FOUND   GEOCAC
 JV2960
 JV2960                          STATION DESCRIPTION
 JV2960
 JV2960'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2960'1.4 MI SE FROM MIDDLETOWN.
 JV2960'1.4 MILES SOUTHEAST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION
 JV2960'OF STATE HIGHWAY 17 AT MIDDLETOWN, FREDERICK COUNTY, 98.2 FEET
 JV2960'NORTHWEST OF HIGHWAY MARKER 54, 28.7 FEET NORTHEAST OF THE CENTER
 JV2960'LINE OF THE HIGHWAY, 14 FEET SOUTHWEST OF THE CENTER LINE OF THE
 JV2960'RAILROAD TRACK, 2 FEET NORTHWEST OF A WHITE WOODEN WITNESS POST,
 JV2960'ABOUT 2 FEET HIGHER THAN THE HIGHWAY, AND LEVEL WITH THE TRACK.
 JV2960'A STATE SURVEY STANDARD DISK, STAMPED F 88 1942 AND SET IN THE TOP
 JV2960'OF A CONCRETE POST.
 JV2960
 JV2960                          STATION RECOVERY (2007)
 JV2960
 JV2960'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV2960'THE RAILROAD HAS BEEN REMOVED, THE ROAD WIDENED AND REGRADING DONE. NO
 JV2960'WITNESS POST WAS LOCATED. M.P. 54 WAS NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3527 ***********************************************************************
 JV3527  DESIGNATION -  F 89
 JV3527  PID         -  JV3527
 JV3527  STATE/COUNTY-  MD/FREDERICK
 JV3527  COUNTRY     -  US
 JV3527  USGS QUAD   -  MYERSVILLE (2016)
 JV3527
 JV3527                         *CURRENT SURVEY CONTROL
 JV3527  ______________________________________________________________________
 JV3527* NAD 83(1986) POSITION- 39 31 03.     (N) 077 32 52.     (W)   SCALED
 JV3527* NAVD 88 ORTHO HEIGHT -   187.517 (meters)      615.21  (feet) ADJUSTED
 JV3527  ______________________________________________________________________
 JV3527  GEOID HEIGHT    -        -33.182 (meters)                     GEOID18
 JV3527  DYNAMIC HEIGHT  -        187.412 (meters)      614.87  (feet) COMP
 JV3527  MODELED GRAVITY -    980,063.7   (mgal)                       NAVD 88
 JV3527
 JV3527  VERT ORDER      -  SECOND    CLASS 0
 JV3527
 JV3527.The horizontal coordinates were scaled from a map and have
 JV3527.an estimated accuracy of +/- 6 seconds.
 JV3527
 JV3527.The orthometric height was determined by differential leveling and
 JV3527.adjusted by the NATIONAL GEODETIC SURVEY
 JV3527.in June 1991.
 JV3527
 JV3527.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3527.GEOID18 height accuracy estimate available here.
 JV3527
 JV3527.Click photographs - Photos may exist for this station.
 JV3527
 JV3527.The dynamic height is computed by dividing the NAVD 88
 JV3527.geopotential number by the normal gravity value computed on the
 JV3527.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3527.degrees latitude (g = 980.6199 gals.).
 JV3527
 JV3527.The modeled gravity was interpolated from observed gravity values.
 JV3527
 JV3527;                    North         East    Units  Estimated Accuracy
 JV3527;SPC MD       -   205,600.      352,900.      MT  (+/- 180 meters Scaled)
 JV3527
 JV3527_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ809773(NAD 83)
 JV3527
 JV3527                          SUPERSEDED SURVEY CONTROL
 JV3527
 JV3527  NGVD 29 (11/26/84)  187.728  (m)          615.90   (f) ADJUSTED    2 0
 JV3527
 JV3527.Superseded values are not recommended for survey control.
 JV3527
 JV3527.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3527.See file dsdata.pdf to determine how the superseded data were derived.
 JV3527
 JV3527_MARKER: DB = BENCH MARK DISK
 JV3527_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3527_SP_SET: BRIDGE
 JV3527_STAMPING: F 89 1942
 JV3527_MARK LOGO: CGS
 JV3527_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3527
 JV3527  HISTORY     - Date     Condition        Report By
 JV3527  HISTORY     - 1942     MONUMENTED       CGS
 JV3527  HISTORY     - 1958     GOOD             CGS
 JV3527  HISTORY     - 20011128 MARK NOT FOUND   MDSHA
 JV3527
 JV3527                          STATION DESCRIPTION
 JV3527
 JV3527'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3527'1.5 MI NE FROM MYERSVILLE.
 JV3527'1.5 MILES NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV3527'AT MYERSVILLE, AT CONCRETE BRIDGE OVER COATOCTIN CREEK, AT THE
 JV3527'NORTH END OF THE BRIDGE, IN TOP OF THE NORTHWEST WING WALL, 14.0
 JV3527'FEET WEST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT LEVEL
 JV3527'WITH THE HIGHWAY.
 JV3527
 JV3527                          STATION RECOVERY (2001)
 JV3527
 JV3527'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3527'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1887 ***********************************************************************
 JV1887  DESIGNATION -  F 90
 JV1887  PID         -  JV1887
 JV1887  STATE/COUNTY-  MD/FREDERICK
 JV1887  COUNTRY     -  US
 JV1887  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV1887
 JV1887                         *CURRENT SURVEY CONTROL
 JV1887  ______________________________________________________________________
 JV1887* NAD 83(1986) POSITION- 39 33 12.     (N) 077 25 50.     (W)   SCALED
 JV1887* NAVD 88 ORTHO HEIGHT -   122.364 (meters)      401.46  (feet) ADJUSTED
 JV1887  ______________________________________________________________________
 JV1887  GEOID HEIGHT    -        -33.013 (meters)                     GEOID18
 JV1887  DYNAMIC HEIGHT  -        122.298 (meters)      401.24  (feet) COMP
 JV1887  MODELED GRAVITY -    980,088.6   (mgal)                       NAVD 88
 JV1887
 JV1887  VERT ORDER      -  SECOND    CLASS 0
 JV1887
 JV1887.The horizontal coordinates were scaled from a map and have
 JV1887.an estimated accuracy of +/- 6 seconds.
 JV1887
 JV1887.The orthometric height was determined by differential leveling and
 JV1887.adjusted by the NATIONAL GEODETIC SURVEY
 JV1887.in June 1991.
 JV1887
 JV1887.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1887.GEOID18 height accuracy estimate available here.
 JV1887
 JV1887.Click photographs - Photos may exist for this station.
 JV1887
 JV1887.The dynamic height is computed by dividing the NAVD 88
 JV1887.geopotential number by the normal gravity value computed on the
 JV1887.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1887.degrees latitude (g = 980.6199 gals.).
 JV1887
 JV1887.The modeled gravity was interpolated from observed gravity values.
 JV1887
 JV1887;                    North         East    Units  Estimated Accuracy
 JV1887;SPC MD       -   209,520.      362,990.      MT  (+/- 180 meters Scaled)
 JV1887
 JV1887_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ911810(NAD 83)
 JV1887
 JV1887                          SUPERSEDED SURVEY CONTROL
 JV1887
 JV1887  NGVD 29 (11/26/84)  122.570  (m)          402.13   (f) ADJUSTED    2 0
 JV1887
 JV1887.Superseded values are not recommended for survey control.
 JV1887
 JV1887.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1887.See file dsdata.pdf to determine how the superseded data were derived.
 JV1887
 JV1887_MARKER: DB = BENCH MARK DISK
 JV1887_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1887_SP_SET: CULVERT
 JV1887_STAMPING: F 90 1942
 JV1887_MARK LOGO: CGS
 JV1887_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1887
 JV1887  HISTORY     - Date     Condition        Report By
 JV1887  HISTORY     - 1942     MONUMENTED       CGS
 JV1887  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JV1887
 JV1887                          STATION DESCRIPTION
 JV1887
 JV1887'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1887'2 MI S FROM CATOCTIN.
 JV1887'2.0 MILES SOUTH ALONG U.S. HIGHWAY 15 FROM THE T-JUNCTION OF A
 JV1887'DIRT ROAD LEADING WEST AT CATOCTIN, FREDERICK COUNTY, 14.5 FEET
 JV1887'WEST OF THE CENTER LINE OF THE HIGHWAY, 15 FEET EAST OF THE
 JV1887'SOUTH END OF A RAIL FENCE PARALLELING THE HIGHWAY, AT A 3-FOOT
 JV1887'DOUBLE CORRUGATED-IRON PIPE CULVERT, IN THE TOP OF THE NORTH
 JV1887'END OF THE WEST HEAD WALL, AND ABOUT 6 INCHES HIGHER THAN THE
 JV1887'HIGHWAY.  A STANDARD DISK, STAMPED F 90 1942.
 JV1887
 JV1887                          STATION RECOVERY (1990)
 JV1887
 JV1887'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1887'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4058 ***********************************************************************
 JV4058  DESIGNATION -  F 90 RESET
 JV4058  PID         -  JV4058
 JV4058  STATE/COUNTY-  MD/FREDERICK
 JV4058  COUNTRY     -  US
 JV4058  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV4058
 JV4058                         *CURRENT SURVEY CONTROL
 JV4058  ______________________________________________________________________
 JV4058* NAD 83(1986) POSITION- 39 33 12.     (N) 077 25 50.     (W)   SCALED
 JV4058* NAVD 88 ORTHO HEIGHT -   122.79  (+/-2cm)      402.9   (feet) VERTCON3
 JV4058  ______________________________________________________________________
 JV4058  GEOID HEIGHT    -        -33.013 (meters)                     GEOID18
 JV4058  VERT ORDER      -  THIRD (See Below)
 JV4058
 JV4058.The horizontal coordinates were scaled from a map and have
 JV4058.an estimated accuracy of +/- 6 seconds.
 JV4058
 JV4058.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4058.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4058
 JV4058.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4058.GEOID18 height accuracy estimate available here.
 JV4058
 JV4058.The vertical order pertains to the NGVD 29 superseded value.
 JV4058
 JV4058.Click photographs - Photos may exist for this station.
 JV4058
 JV4058;                    North         East    Units  Estimated Accuracy
 JV4058;SPC MD       -   209,520.      362,990.      MT  (+/- 180 meters Scaled)
 JV4058
 JV4058_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ911810(NAD 83)
 JV4058
 JV4058                          SUPERSEDED SURVEY CONTROL
 JV4058
 JV4058  NGVD 29 (??/??/??)  122.99   (m)          403.5    (f) RESET       3  
 JV4058
 JV4058.Superseded values are not recommended for survey control.
 JV4058
 JV4058.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4058.See file dsdata.pdf to determine how the superseded data were derived.
 JV4058
 JV4058_MARKER: DV = VERTICAL CONTROL DISK
 JV4058_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV4058_SP_SET: CULVERT
 JV4058_STAMPING: F 90 RESET 1979
 JV4058_MARK LOGO: NGS
 JV4058_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4058+STABILITY: SURFACE MOTION
 JV4058
 JV4058  HISTORY     - Date     Condition        Report By
 JV4058  HISTORY     - 1979     MONUMENTED       NGS
 JV4058  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JV4058
 JV4058                          STATION DESCRIPTION
 JV4058
 JV4058'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV4058'6.1 MI S FROM THURMONT.
 JV4058'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 550 AND U.S. HIGH-
 JV4058'WAY 15 IN THURMONT, GO SOUTH ON U.S. HIGHWAY 15 FOR 4.85 MILES TO THE
 JV4058'STATE HIGHWAY 806 CONTINUE SOUTH ON U.S. HIGHWAY 15 FOR 1.29 MILE TO
 JV4058'THE MARK ON THE RIGHT, 69 FEET EAST OF THE CENTER OF STATE HIGHWAY
 JV4058'806, 36 FEET NORTH OF THE SOUTH EDGE OF THE LARGE CONCRETE CULVERT,
 JV4058'9.5 FEET NORTH OF THE CENTER OF THE CREEK AND SET IN THE NORTHWEST
 JV4058
 JV4058                          STATION RECOVERY (1990)
 JV4058
 JV4058'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV4058'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2369 ***********************************************************************
 JV2369  DESIGNATION -  F 91
 JV2369  PID         -  JV2369
 JV2369  STATE/COUNTY-  MD/MONTGOMERY
 JV2369  COUNTRY     -  US
 JV2369  USGS QUAD   -  URBANA (2016)
 JV2369
 JV2369                         *CURRENT SURVEY CONTROL
 JV2369  ______________________________________________________________________
 JV2369* NAD 83(1986) POSITION- 39 17 08.     (N) 077 18 52.     (W)   SCALED
 JV2369* NAVD 88 ORTHO HEIGHT -   143.751 (meters)      471.62  (feet) ADJUSTED
 JV2369  ______________________________________________________________________
 JV2369  GEOID HEIGHT    -        -32.118 (meters)                     GEOID18
 JV2369  DYNAMIC HEIGHT  -        143.675 (meters)      471.37  (feet) COMP
 JV2369  MODELED GRAVITY -    980,095.8   (mgal)                       NAVD 88
 JV2369
 JV2369  VERT ORDER      -  SECOND    CLASS I
 JV2369
 JV2369.The horizontal coordinates were scaled from a map and have
 JV2369.an estimated accuracy of +/- 6 seconds.
 JV2369
 JV2369.The orthometric height was determined by differential leveling and
 JV2369.adjusted by the NATIONAL GEODETIC SURVEY
 JV2369.in June 1991.
 JV2369
 JV2369.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2369.GEOID18 height accuracy estimate available here.
 JV2369
 JV2369.Click photographs - Photos may exist for this station.
 JV2369
 JV2369.The dynamic height is computed by dividing the NAVD 88
 JV2369.geopotential number by the normal gravity value computed on the
 JV2369.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2369.degrees latitude (g = 980.6199 gals.).
 JV2369
 JV2369.The modeled gravity was interpolated from observed gravity values.
 JV2369
 JV2369;                    North         East    Units  Estimated Accuracy
 JV2369;SPC MD       -   179,750.      372,870.      MT  (+/- 180 meters Scaled)
 JV2369
 JV2369_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ003510(NAD 83)
 JV2369
 JV2369                          SUPERSEDED SURVEY CONTROL
 JV2369
 JV2369  NGVD 29 (11/26/84)  143.946  (m)          472.26   (f) ADJUSTED    2 0
 JV2369
 JV2369.Superseded values are not recommended for survey control.
 JV2369
 JV2369.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2369.See file dsdata.pdf to determine how the superseded data were derived.
 JV2369
 JV2369_MARKER: DB = BENCH MARK DISK
 JV2369_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2369_STAMPING: F 91 1942
 JV2369_MARK LOGO: CGS
 JV2369_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2369_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2369+STABILITY: SURFACE MOTION
 JV2369_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2369+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2001
 JV2369
 JV2369  HISTORY     - Date     Condition        Report By
 JV2369  HISTORY     - 1942     MONUMENTED       CGS
 JV2369  HISTORY     - 1958     GOOD             CGS
 JV2369  HISTORY     - 1970     GOOD             NGS
 JV2369  HISTORY     - 20010615 GOOD             MDSHA
 JV2369
 JV2369                          STATION DESCRIPTION
 JV2369
 JV2369'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2369'0.4 MI NW FROM HYATTSTOWN.
 JV2369'ABOUT 0.4 MILE NORTHWEST ALONG STATE HIGHWAY 355 (OLD U.S.
 JV2369'HIGHWAY 240) FROM THE POST OFFICE AT HYATTSTOWN, NEAR THE
 JV2369'MONTGOMERY-FREDERICK COUNTY LINE, 31 FEET SOUTHWEST OF THE
 JV2369'CENTERLINE OF THE HIGHWAY, 22 FEET SOUTHEAST OF THE SOUTHEAST
 JV2369'CORNER OF A CHURCH, 17 FEET SOUTHEAST OF THE CENTER OF A CONCRETE
 JV2369'WALK LEADING TO CHURCH, 1 FOOT SOUTHEAST OF A ROCK WALL, ABOUT
 JV2369'100 FEET NORTHWEST AND ACROSS THE HIGHWAY FROM A LARGE CEMETERY,
 JV2369'SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE
 JV2369'GROUND AND ABOUT 3 FEET ABOVE THE LEVEL OF THE HIGHWAY.
 JV2369
 JV2369                          STATION RECOVERY (1970)
 JV2369
 JV2369'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 JV2369'RECOVERED IN GOOD CONDITION.
 JV2369
 JV2369                          STATION RECOVERY (2001)
 JV2369
 JV2369'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2369'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0775 ***********************************************************************
 JV0775  DESIGNATION -  F 92
 JV0775  PID         -  JV0775
 JV0775  STATE/COUNTY-  MD/BALTIMORE
 JV0775  COUNTRY     -  US
 JV0775  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0775
 JV0775                         *CURRENT SURVEY CONTROL
 JV0775  ______________________________________________________________________
 JV0775* NAD 83(1986) POSITION- 39 21 31.     (N) 076 47 06.     (W)   SCALED
 JV0775* NAVD 88 ORTHO HEIGHT -   150.679 (meters)      494.35  (feet) ADJUSTED
 JV0775  ______________________________________________________________________
 JV0775  GEOID HEIGHT    -        -32.169 (meters)                     GEOID18
 JV0775  DYNAMIC HEIGHT  -        150.601 (meters)      494.10  (feet) COMP
 JV0775  MODELED GRAVITY -    980,102.6   (mgal)                       NAVD 88
 JV0775
 JV0775  VERT ORDER      -  SECOND    CLASS 0
 JV0775
 JV0775.The horizontal coordinates were scaled from a map and have
 JV0775.an estimated accuracy of +/- 6 seconds.
 JV0775
 JV0775.The orthometric height was determined by differential leveling and
 JV0775.adjusted by the NATIONAL GEODETIC SURVEY
 JV0775.in June 1991.
 JV0775
 JV0775.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0775.GEOID18 height accuracy estimate available here.
 JV0775
 JV0775.Click photographs - Photos may exist for this station.
 JV0775
 JV0775.The dynamic height is computed by dividing the NAVD 88
 JV0775.geopotential number by the normal gravity value computed on the
 JV0775.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0775.degrees latitude (g = 980.6199 gals.).
 JV0775
 JV0775.The modeled gravity was interpolated from observed gravity values.
 JV0775
 JV0775;                    North         East    Units  Estimated Accuracy
 JV0775;SPC MD       -   187,840.      418,530.      MT  (+/- 180 meters Scaled)
 JV0775
 JV0775_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ462580(NAD 83)
 JV0775
 JV0775                          SUPERSEDED SURVEY CONTROL
 JV0775
 JV0775  NGVD 29 (11/26/84)  150.899  (m)          495.07   (f) ADJUSTED    2 0
 JV0775
 JV0775.Superseded values are not recommended for survey control.
 JV0775
 JV0775.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0775.See file dsdata.pdf to determine how the superseded data were derived.
 JV0775
 JV0775_MARKER: DB = BENCH MARK DISK
 JV0775_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0775_SP_SET: BRIDGE
 JV0775_STAMPING: F 92 1942
 JV0775_MARK LOGO: CGS
 JV0775_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0775
 JV0775  HISTORY     - Date     Condition        Report By
 JV0775  HISTORY     - 1942     MONUMENTED       CGS
 JV0775  HISTORY     - 1967     GOOD             CGS
 JV0775  HISTORY     - 1974     MARK NOT FOUND   MDDT
 JV0775  HISTORY     - 19950713 MARK NOT FOUND   USPSQD
 JV0775
 JV0775                          STATION DESCRIPTION
 JV0775
 JV0775'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JV0775'0.4 MI SW FROM RANDALLSTOWN.
 JV0775'0.4 MILE SOUTHWEST ALONG STATE HIGHWAY 125 FROM THE INTERSECTION
 JV0775'OF STATE HIGHWAY 26 AT RANDALLSTOWN, BALTIMORE COUNTY, IN THE
 JV0775'NORTHWEST WING WALL OF A BRIDGE, 13.0 FEET NORTH OF THE CENTER
 JV0775'LINE OF THE HIGHWAY, AND 24 FEET EAST OF A POLE.  A STANDARD
 JV0775'DISK, STAMPED F 92 1942.
 JV0775
 JV0775                          STATION RECOVERY (1974)
 JV0775
 JV0775'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1974
 JV0775'MARK NOT FOUND.
 JV0775
 JV0775                          STATION RECOVERY (1995)
 JV0775
 JV0775'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0775'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1874 ***********************************************************************
 JV1874  DESIGNATION -  F 93
 JV1874  PID         -  JV1874
 JV1874  STATE/COUNTY-  MD/FREDERICK
 JV1874  COUNTRY     -  US
 JV1874  USGS QUAD   -  UNION BRIDGE (2016)
 JV1874
 JV1874                         *CURRENT SURVEY CONTROL
 JV1874  ______________________________________________________________________
 JV1874* NAD 83(1986) POSITION- 39 32 57.     (N) 077 10 44.     (W)   SCALED
 JV1874* NAVD 88 ORTHO HEIGHT -   125.373 (meters)      411.33  (feet) ADJUSTED
 JV1874  ______________________________________________________________________
 JV1874  GEOID HEIGHT    -        -32.549 (meters)                     GEOID18
 JV1874  DYNAMIC HEIGHT  -        125.307 (meters)      411.11  (feet) COMP
 JV1874  MODELED GRAVITY -    980,096.9   (mgal)                       NAVD 88
 JV1874
 JV1874  VERT ORDER      -  SECOND    CLASS 0
 JV1874
 JV1874.The horizontal coordinates were scaled from a map and have
 JV1874.an estimated accuracy of +/- 6 seconds.
 JV1874
 JV1874.The orthometric height was determined by differential leveling and
 JV1874.adjusted by the NATIONAL GEODETIC SURVEY
 JV1874.in June 1991.
 JV1874
 JV1874.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1874.GEOID18 height accuracy estimate available here.
 JV1874
 JV1874.Click photographs - Photos may exist for this station.
 JV1874
 JV1874.The dynamic height is computed by dividing the NAVD 88
 JV1874.geopotential number by the normal gravity value computed on the
 JV1874.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1874.degrees latitude (g = 980.6199 gals.).
 JV1874
 JV1874.The modeled gravity was interpolated from observed gravity values.
 JV1874
 JV1874;                    North         East    Units  Estimated Accuracy
 JV1874;SPC MD       -   208,990.      384,620.      MT  (+/- 180 meters Scaled)
 JV1874
 JV1874_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ127799(NAD 83)
 JV1874
 JV1874                          SUPERSEDED SURVEY CONTROL
 JV1874
 JV1874  NGVD 29 (11/26/84)  125.581  (m)          412.01   (f) ADJUSTED    2 0
 JV1874
 JV1874.Superseded values are not recommended for survey control.
 JV1874
 JV1874.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1874.See file dsdata.pdf to determine how the superseded data were derived.
 JV1874
 JV1874_MARKER: DB = BENCH MARK DISK
 JV1874_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1874_STAMPING: F 93 1942
 JV1874_MARK LOGO: CGS
 JV1874_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1874+STABILITY: SURFACE MOTION
 JV1874
 JV1874  HISTORY     - Date     Condition        Report By
 JV1874  HISTORY     - 1942     MONUMENTED       CGS
 JV1874
 JV1874                          STATION DESCRIPTION
 JV1874
 JV1874'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1874'1.3 MI S FROM UNION BRIDGE.
 JV1874'1.3 MILES SOUTH ALONG STATE HIGHWAY 75 FROM THE RAILROAD STATION
 JV1874'AT UNION BRIDGE, FREDERICK COUNTY, THENCE 0.2 MILE SOUTH ALONG
 JV1874'THE UNIONVILLE ROAD, 136 FEET NORTHWEST OF A 20-INCH WALNUT
 JV1874'TREE, 27 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 3 FEET
 JV1874'EAST OF A POWER-TRANSMISSION LINE POLE, AND NEAR A WHITE WOODEN
 JV1874'WITNESS POST.  A STANDARD DISK, STAMPED F 93 1942 AND SET IN THE
 JV1874'TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0156 ***********************************************************************
 JV0156  DESIGNATION -  F 96
 JV0156  PID         -  JV0156
 JV0156  STATE/COUNTY-  MD/CECIL
 JV0156  COUNTRY     -  US
 JV0156  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0156
 JV0156                         *CURRENT SURVEY CONTROL
 JV0156  ______________________________________________________________________
 JV0156* NAD 83(1986) POSITION- 39 35 59.8    (N) 076 04 09.5    (W)   HD_HELD2
 JV0156* NAVD 88 ORTHO HEIGHT -   123.150 (meters)      404.03  (feet) ADJUSTED
 JV0156  ______________________________________________________________________
 JV0156  GEOID HEIGHT    -        -33.065 (meters)                     GEOID18
 JV0156  DYNAMIC HEIGHT  -        123.089 (meters)      403.83  (feet) COMP
 JV0156  MODELED GRAVITY -    980,128.0   (mgal)                       NAVD 88
 JV0156
 JV0156  VERT ORDER      -  SECOND    CLASS 0
 JV0156
 JV0156.The horizontal coordinates were established by autonomous hand held GPS
 JV0156.observations and have an estimated accuracy of +/- 10 meters.
 JV0156
 JV0156.The orthometric height was determined by differential leveling and
 JV0156.adjusted by the NATIONAL GEODETIC SURVEY
 JV0156.in June 1995.
 JV0156
 JV0156.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0156.GEOID18 height accuracy estimate available here.
 JV0156
 JV0156.Click photographs - Photos may exist for this station.
 JV0156
 JV0156.The dynamic height is computed by dividing the NAVD 88
 JV0156.geopotential number by the normal gravity value computed on the
 JV0156.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0156.degrees latitude (g = 980.6199 gals.).
 JV0156
 JV0156.The modeled gravity was interpolated from observed gravity values.
 JV0156
 JV0156;                    North         East    Units  Estimated Accuracy
 JV0156;SPC MD       -   215,019.      479,938.      MT  (+/- 10 meters HH2 GPS)
 JV0156
 JV0156_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0819283902(NAD 83)
 JV0156
 JV0156                          SUPERSEDED SURVEY CONTROL
 JV0156
 JV0156  NAVD 88 (06/15/91)  123.161  (m)          404.07   (f) SUPERSEDED  2 0
 JV0156  NGVD 29 (11/26/84)  123.436  (m)          404.97   (f) ADJUSTED    2 0
 JV0156
 JV0156.Superseded values are not recommended for survey control.
 JV0156
 JV0156.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0156.See file dsdata.pdf to determine how the superseded data were derived.
 JV0156
 JV0156_MARKER: DB = BENCH MARK DISK
 JV0156_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0156_STAMPING: F 96 1959
 JV0156_MARK LOGO: CGS
 JV0156_PROJECTION: FLUSH
 JV0156_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0156_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0156+STABILITY: SURFACE MOTION
 JV0156_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0156+SATELLITE: SATELLITE OBSERVATIONS - October 06, 2025
 JV0156
 JV0156  HISTORY     - Date     Condition        Report By
 JV0156  HISTORY     - 1959     MONUMENTED       CGS
 JV0156  HISTORY     - 1964     GOOD             CGS
 JV0156  HISTORY     - 19901201 GOOD             USPSQD
 JV0156  HISTORY     - 19910904 GOOD             MDSHA
 JV0156  HISTORY     - 20050507 GOOD             GEOCAC
 JV0156  HISTORY     - 20110217 GOOD             GWS
 JV0156  HISTORY     - 20251006 GOOD             PROFLN
 JV0156
 JV0156                          STATION DESCRIPTION
 JV0156
 JV0156'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0156'2.2 MI FROM PERRYVILLE.
 JV0156'ABOUT 1.7 MILES NORTH ALONG U.S. HIGHWAY 222 FROM THE
 JV0156'INTERSECTION OF U.S. HIGHWAY 40 AT PERRYVILLE TO BRIDGE OVER THE
 JV0156'NORTHEASTERN EXPRESSWAY INTERCHANGE, THENCE 0.45 MILE TO OLD
 JV0156'HIGHWAY, THENCE 0.1 MILE WEST ALONG THE HIGHWAY.  AT THE ASBURY
 JV0156'METHODIST CHURCH, 54 FEET SOUTH OF SOUTHEAST CORNER, 37 FEET
 JV0156'NORTHWEST OF SOUTHEAST END OF A ROCK WALL ABOUT 3 FEET HIGH
 JV0156'AND 1 FOOT SOUTH OF THE WALL.  A STANDARD DISK IN THE TOP OF A
 JV0156'CONCRETE MONUMENT AND PROJECTING 4 INCHES.
 JV0156
 JV0156                          STATION RECOVERY (1990)
 JV0156
 JV0156'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0156'RECOVERED IN GOOD CONDITION.
 JV0156
 JV0156                          STATION RECOVERY (1991)
 JV0156
 JV0156'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV0156'RECOVERED IN GOOD CONDITION.
 JV0156
 JV0156                          STATION RECOVERY (2005)
 JV0156
 JV0156'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 JV0156'FOUND AS DESCRIBED JUST SOUTHEAST OF AND OUTSIDE A LOW STONE WALL
 JV0156'SURROUNDING ASBURY UNITED METHODIST CHURCH AND CEMETERY.
 JV0156'STATION DISK IS ABOUT 8 INCHES SOUTHEAST OF THE STONE WALL AND ABOUT
 JV0156'53.5 FEET WEST FROM POLE 33909 38217.
 JV0156
 JV0156                          STATION RECOVERY (2011)
 JV0156
 JV0156'RECOVERY NOTE BY GW STEPHENS JR AND ASSOCIATES 2011 (WAJ)
 JV0156'RECOVERED IN GOOD CONDITION.
 JV0156
 JV0156                          STATION RECOVERY (2025)
 JV0156
 JV0156'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0156'THE MARK IS 13 FT (4.0 M) EAST-NORTHEAST OF THE SOUTHWEST (BACK) LINE
 JV0156'EXTENDED OF THE CHURCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1476 ***********************************************************************
 JV1476  DESIGNATION -  F 97
 JV1476  PID         -  JV1476
 JV1476  STATE/COUNTY-  MD/BALTIMORE
 JV1476  COUNTRY     -  US
 JV1476  USGS QUAD   -  HEREFORD (2016)
 JV1476
 JV1476                         *CURRENT SURVEY CONTROL
 JV1476  ______________________________________________________________________
 JV1476* NAD 83(1986) POSITION- 39 32 48.     (N) 076 39 57.     (W)   SCALED
 JV1476* NAVD 88 ORTHO HEIGHT -   108.488 (meters)      355.93  (feet) ADJUSTED
 JV1476  ______________________________________________________________________
 JV1476  GEOID HEIGHT    -        -32.307 (meters)                     GEOID18
 JV1476  DYNAMIC HEIGHT  -        108.433 (meters)      355.75  (feet) COMP
 JV1476  MODELED GRAVITY -    980,119.8   (mgal)                       NAVD 88
 JV1476
 JV1476  VERT ORDER      -  SECOND    CLASS 0
 JV1476
 JV1476.The horizontal coordinates were scaled from a map and have
 JV1476.an estimated accuracy of +/- 6 seconds.
 JV1476
 JV1476.The orthometric height was determined by differential leveling and
 JV1476.adjusted by the NATIONAL GEODETIC SURVEY
 JV1476.in June 1991.
 JV1476
 JV1476.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1476.GEOID18 height accuracy estimate available here.
 JV1476
 JV1476.Click photographs - Photos may exist for this station.
 JV1476
 JV1476.The dynamic height is computed by dividing the NAVD 88
 JV1476.geopotential number by the normal gravity value computed on the
 JV1476.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1476.degrees latitude (g = 980.6199 gals.).
 JV1476
 JV1476.The modeled gravity was interpolated from observed gravity values.
 JV1476
 JV1476;                    North         East    Units  Estimated Accuracy
 JV1476;SPC MD       -   208,750.      428,720.      MT  (+/- 180 meters Scaled)
 JV1476
 JV1476_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ568787(NAD 83)
 JV1476
 JV1476                          SUPERSEDED SURVEY CONTROL
 JV1476
 JV1476  NGVD 29 (11/26/84)  108.692  (m)          356.60   (f) ADJUSTED    2 0
 JV1476
 JV1476.Superseded values are not recommended for survey control.
 JV1476
 JV1476.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1476.See file dsdata.pdf to determine how the superseded data were derived.
 JV1476
 JV1476_MARKER: DB = BENCH MARK DISK
 JV1476_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1476_SP_SET: BRIDGE
 JV1476_STAMPING: F 97 1959
 JV1476_MARK LOGO: CGS
 JV1476_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1476
 JV1476  HISTORY     - Date     Condition        Report By
 JV1476  HISTORY     - 1959     MONUMENTED       CGS
 JV1476  HISTORY     - 19961004 MARK NOT FOUND   USPSQD
 JV1476  HISTORY     - 20010815 MARK NOT FOUND   MDSHA
 JV1476
 JV1476                          STATION DESCRIPTION
 JV1476
 JV1476'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1476'4.9 MI NW FROM MARBLE HILL.
 JV1476'1.0 MILE WEST ALONG SHAWAN ROAD FROM ITS JUNCTION WITH STATE
 JV1476'HIGHWAY 45 AT MARBLE HILL, THENCE 3.9 MILES NORTH ALONG NEW
 JV1476'U.S. HIGHWAY 111, ON THE TOP OF THE NORTH END OF THE EAST BASE
 JV1476'OF THE CONCRETE RAILING OF THE LARGE NORTHBOUND LANE BRIDGE OVER
 JV1476'THE BELFAST ROAD, 18 FEET EAST OF THE CENTER LINE OF THE HIGHWAY,
 JV1476'4 FEET SOUTH OF THE NORTH END OF THE GUARDRAIL AND 1 FOOT ABOVE
 JV1476'THE LEVEL OF THE HIGHWAY.
 JV1476
 JV1476                          STATION RECOVERY (1996)
 JV1476
 JV1476'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV1476'MARK NOT FOUND.
 JV1476
 JV1476                          STATION RECOVERY (2001)
 JV1476
 JV1476'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1476'THE STATION WAS SEARCHED FOR AND NOT RECOVERED. A NEW BRIDGE HAS BEEN
 JV1476'CONSTRUCTED AT THE DESCRIBED LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3997 ***********************************************************************
 JV3997  DESIGNATION -  F 97 RESET
 JV3997  PID         -  JV3997
 JV3997  STATE/COUNTY-  MD/BALTIMORE
 JV3997  COUNTRY     -  US
 JV3997  USGS QUAD   -  HEREFORD (2016)
 JV3997
 JV3997                         *CURRENT SURVEY CONTROL
 JV3997  ______________________________________________________________________
 JV3997* NAD 83(1986) POSITION- 39 32 48.     (N) 076 39 57.     (W)   SCALED
 JV3997* NAVD 88 ORTHO HEIGHT -   107.18  (+/-2cm)      351.6   (feet) VERTCON3
 JV3997  ______________________________________________________________________
 JV3997  GEOID HEIGHT    -        -32.307 (meters)                     GEOID18
 JV3997  VERT ORDER      -  THIRD (See Below)
 JV3997
 JV3997.The horizontal coordinates were scaled from a map and have
 JV3997.an estimated accuracy of +/- 6 seconds.
 JV3997
 JV3997.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3997.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3997
 JV3997.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3997.GEOID18 height accuracy estimate available here.
 JV3997
 JV3997.The vertical order pertains to the NGVD 29 superseded value.
 JV3997
 JV3997.Click photographs - Photos may exist for this station.
 JV3997
 JV3997;                    North         East    Units  Estimated Accuracy
 JV3997;SPC MD       -   208,750.      428,720.      MT  (+/- 180 meters Scaled)
 JV3997
 JV3997_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ568787(NAD 83)
 JV3997
 JV3997                          SUPERSEDED SURVEY CONTROL
 JV3997
 JV3997  NGVD 29 (??/??/??)  107.39   (m)          352.3    (f) RESET       3  
 JV3997
 JV3997.Superseded values are not recommended for survey control.
 JV3997
 JV3997.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3997.See file dsdata.pdf to determine how the superseded data were derived.
 JV3997
 JV3997_MARKER: DV = VERTICAL CONTROL DISK
 JV3997_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3997_SP_SET: BRIDGE
 JV3997_STAMPING: F 97 RESET 1981
 JV3997_MARK LOGO: NGS
 JV3997_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3997
 JV3997  HISTORY     - Date     Condition        Report By
 JV3997  HISTORY     - 1981     MONUMENTED       NGS
 JV3997  HISTORY     - 19961004 MARK NOT FOUND   USPSQD
 JV3997  HISTORY     - 20010827 MARK NOT FOUND   MDSHA
 JV3997
 JV3997                          STATION DESCRIPTION
 JV3997
 JV3997'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 JV3997'4.9 MI NW FROM MARBLE HILL.
 JV3997'LOCATED 1.1 MILE NORTHWEST ALONG SHAWAN ROAD FROM ITS JUNCTON WITH
 JV3997'STATE HIGHWAY 45 AT MARBLE HILL, THENSE NORTH 3.9 MILES ALONG INTER-
 JV3997'STATE HIGHWAY 83 (FORMER U.S. HIGHWAY 111) IN THE WEST PAVED BRIDGE
 JV3997'DECK FOR THE NORTH BOUND LANE OF INTERSTATE HIGHWAY 83, OVER THE
 JV3997'BRIDGE ABUTMENT, (3.0 FT) EAST OF THE EAST BOTTOM SIDE OF THE DIVIDER
 JV3997'AND 1.7 FEET NORTH OF THE SOUTH EDGE OF THE DECK.
 JV3997
 JV3997                          STATION RECOVERY (1996)
 JV3997
 JV3997'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV3997'MARK NOT FOUND.
 JV3997
 JV3997                          STATION RECOVERY (2001)
 JV3997
 JV3997'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3997'THE STATION WAS SEARCHED FOR AND THE STEM WAS RECOVERED BUT THE DISK
 JV3997'HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0852 ***********************************************************************
 JV0852  DESIGNATION -  F 98
 JV0852  PID         -  JV0852
 JV0852  STATE/COUNTY-  MD/BALTIMORE
 JV0852  COUNTRY     -  US
 JV0852  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0852
 JV0852                         *CURRENT SURVEY CONTROL
 JV0852  ______________________________________________________________________
 JV0852* NAD 83(1986) POSITION- 39 16 55.     (N) 076 43 53.     (W)   SCALED
 JV0852* NAVD 88 ORTHO HEIGHT -   147.312 (meters)      483.31  (feet) ADJUSTED
 JV0852  ______________________________________________________________________
 JV0852  GEOID HEIGHT    -        -32.350 (meters)                     GEOID18
 JV0852  DYNAMIC HEIGHT  -        147.235 (meters)      483.05  (feet) COMP
 JV0852  MODELED GRAVITY -    980,098.5   (mgal)                       NAVD 88
 JV0852
 JV0852  VERT ORDER      -  SECOND    CLASS 0
 JV0852
 JV0852.The horizontal coordinates were scaled from a map and have
 JV0852.an estimated accuracy of +/- 6 seconds.
 JV0852
 JV0852.The orthometric height was determined by differential leveling and
 JV0852.adjusted by the NATIONAL GEODETIC SURVEY
 JV0852.in June 1991.
 JV0852
 JV0852.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0852.GEOID18 height accuracy estimate available here.
 JV0852
 JV0852.Click photographs - Photos may exist for this station.
 JV0852
 JV0852.The dynamic height is computed by dividing the NAVD 88
 JV0852.geopotential number by the normal gravity value computed on the
 JV0852.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0852.degrees latitude (g = 980.6199 gals.).
 JV0852
 JV0852.The modeled gravity was interpolated from observed gravity values.
 JV0852
 JV0852;                    North         East    Units  Estimated Accuracy
 JV0852;SPC MD       -   179,340.      423,180.      MT  (+/- 180 meters Scaled)
 JV0852
 JV0852_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ506494(NAD 83)
 JV0852
 JV0852                          SUPERSEDED SURVEY CONTROL
 JV0852
 JV0852  NGVD 29 (11/26/84)  147.530  (m)          484.02   (f) ADJUSTED    2 0
 JV0852
 JV0852.Superseded values are not recommended for survey control.
 JV0852
 JV0852.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0852.See file dsdata.pdf to determine how the superseded data were derived.
 JV0852
 JV0852_MARKER: DB = BENCH MARK DISK
 JV0852_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0852_SP_SET: OVERPASS CURBING
 JV0852_STAMPING: F 98 1960
 JV0852_MARK LOGO: CGS
 JV0852_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0852
 JV0852  HISTORY     - Date     Condition        Report By
 JV0852  HISTORY     - 1960     MONUMENTED       CGS
 JV0852  HISTORY     - 20030921 MARK NOT FOUND   USPSQD
 JV0852
 JV0852                          STATION DESCRIPTION
 JV0852
 JV0852'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0852'1.3 MI NW FROM CATONSVILLE.
 JV0852'ABOUT 0.6 MILE EAST ALONG FREDERICK ROAD FROM THE POST OFFICE AT
 JV0852'CATONSVILLE, THENCE ABOUT 0.7 MILE NORTHWEST ALONG BALTIMORE
 JV0852'COUNTY BELTWAY (INTERSTATE HIGHWAY 695), IN THE TOP OF SOUTH END
 JV0852'OF THE EAST CURBING OF NORTH BOUND TRAFFIC LANE OF INTERSTATE
 JV0852'HIGHWAY OVERPASS OVER INGLESIDE AVENUE, 24 1/2 FEET EAST OF CENTER
 JV0852'LINE OF NORTH BOUND TRAFFIC LANE, 4 1/2 FEET NORTH OF SOUTH END
 JV0852'OF CURBING AND 1 FOOT ABOVE LEVEL OF HIGHWAY.
 JV0852
 JV0852                          STATION RECOVERY (2003)
 JV0852
 JV0852'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0852'NOT FOUND.  THE BRIDGE AND CURBING WERE REPLACED IN 1981.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0854 ***********************************************************************
 JV0854  DESIGNATION -  F 98 RESET
 JV0854  PID         -  JV0854
 JV0854  STATE/COUNTY-  MD/BALTIMORE
 JV0854  COUNTRY     -  US
 JV0854  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0854
 JV0854                         *CURRENT SURVEY CONTROL
 JV0854  ______________________________________________________________________
 JV0854* NAD 83(1986) POSITION- 39 16 55.     (N) 076 43 53.     (W)   SCALED
 JV0854* NAVD 88 ORTHO HEIGHT -   144.33  (+/-2cm)      473.5   (feet) VERTCON3
 JV0854  ______________________________________________________________________
 JV0854  GEOID HEIGHT    -        -32.350 (meters)                     GEOID18
 JV0854  VERT ORDER      -  THIRD (See Below)
 JV0854
 JV0854.The horizontal coordinates were scaled from a map and have
 JV0854.an estimated accuracy of +/- 6 seconds.
 JV0854
 JV0854.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV0854.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV0854
 JV0854.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0854.GEOID18 height accuracy estimate available here.
 JV0854
 JV0854.The vertical order pertains to the NGVD 29 superseded value.
 JV0854
 JV0854.Click photographs - Photos may exist for this station.
 JV0854
 JV0854;                    North         East    Units  Estimated Accuracy
 JV0854;SPC MD       -   179,340.      423,180.      MT  (+/- 180 meters Scaled)
 JV0854
 JV0854_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ506494(NAD 83)
 JV0854
 JV0854                          SUPERSEDED SURVEY CONTROL
 JV0854
 JV0854  NGVD 29 (??/??/??)  144.55   (m)          474.2    (f) RESET       3  
 JV0854
 JV0854.Superseded values are not recommended for survey control.
 JV0854
 JV0854.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0854.See file dsdata.pdf to determine how the superseded data were derived.
 JV0854
 JV0854_MARKER: DV = VERTICAL CONTROL DISK
 JV0854_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0854_SP_SET: CURB
 JV0854_STAMPING: F 98 RESET 1974
 JV0854_MARK LOGO: NGS
 JV0854_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0854
 JV0854  HISTORY     - Date     Condition        Report By
 JV0854  HISTORY     - 1974     MONUMENTED       NGS
 JV0854  HISTORY     - 20030921 MARK NOT FOUND   USPSQD
 JV0854
 JV0854                          STATION DESCRIPTION
 JV0854
 JV0854'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
 JV0854'1.2 MI N FROM CATONSVILLE.
 JV0854'THE MARK IS LOCATED ABOUT 7 MILES WEST OF BALTIMORE.  IT IS IN
 JV0854'A CURB ON THE SOUTHWEST SIDE OF AN EXIT RAMP FOR INTERSTATE
 JV0854'HIGHWAY 695 AT THE INTERSECTION OF THE BELTWAY AND EDMONDSON AVENUE.
 JV0854'THE MARK IS A STANDARD DISK CEMENTED IN A DRILL HOLE IN THE CURB,
 JV0854'75 PACES SOUTHEAST OF A POINT WHERE THE EXIT RAMP LEAVES THE
 JV0854'BELTWAY, 25 PACES SOUTHWEST OF THE CENTER OF THE BELTWAY, 12.5
 JV0854'FEET WEST OF THE CENTER OF THE EXIT RAMP AND 3.8 FEET NORTH OF A
 JV0854'LIGHT POLE NUMBERED 14 49 250.  IT IS ABOUT 1/2 FOOT HIGHER THAN
 JV0854'THE EXIT RAMP AND 3 FEET LOWER THAN INTERSTATE HIGHWAY 695 WHICH
 JV0854'IS THE BELTWAY.  AN ELEVATION WAS TRANSFERED TO THIS MARK FROM
 JV0854'BENCH MARK F 98 RESET 1964.  AT THE REQUEST OF THE HIGHWAY DEPT.
 JV0854'BENCH MARK F 98 RESET 1964 WAS LEFT INTACT UNTIL THE CONSTRUCTION
 JV0854'DESTROYS IN THE EARLY SPRING OF 1974.
 JV0854
 JV0854                          STATION RECOVERY (2003)
 JV0854
 JV0854'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0854'NOT FOUND.  THE LIGHT POLE WAS FOUND TO BE PRESENT, BUT THE STATION
 JV0854'WAS NOT FOUND WITH PROBING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0220 ***********************************************************************
 JV0220  DESIGNATION -  F 99
 JV0220  PID         -  JV0220
 JV0220  STATE/COUNTY-  MD/HARFORD
 JV0220  COUNTRY     -  US
 JV0220  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0220
 JV0220                         *CURRENT SURVEY CONTROL
 JV0220  ______________________________________________________________________
 JV0220* NAD 83(1986) POSITION- 39 36 29.     (N) 076 27 45.     (W)   SCALED
 JV0220* NAVD 88 ORTHO HEIGHT -   185.183 (meters)      607.55  (feet) ADJUSTED
 JV0220  ______________________________________________________________________
 JV0220  GEOID HEIGHT    -        -32.548 (meters)                     GEOID18
 JV0220  DYNAMIC HEIGHT  -        185.089 (meters)      607.25  (feet) COMP
 JV0220  MODELED GRAVITY -    980,111.9   (mgal)                       NAVD 88
 JV0220
 JV0220  VERT ORDER      -  SECOND    CLASS 0
 JV0220
 JV0220.The horizontal coordinates were scaled from a map and have
 JV0220.an estimated accuracy of +/- 6 seconds.
 JV0220
 JV0220.The orthometric height was determined by differential leveling and
 JV0220.adjusted by the NATIONAL GEODETIC SURVEY
 JV0220.in June 1991.
 JV0220
 JV0220.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0220.GEOID18 height accuracy estimate available here.
 JV0220
 JV0220.Click photographs - Photos may exist for this station.
 JV0220
 JV0220.The dynamic height is computed by dividing the NAVD 88
 JV0220.geopotential number by the normal gravity value computed on the
 JV0220.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0220.degrees latitude (g = 980.6199 gals.).
 JV0220
 JV0220.The modeled gravity was interpolated from observed gravity values.
 JV0220
 JV0220;                    North         East    Units  Estimated Accuracy
 JV0220;SPC MD       -   215,650.      446,160.      MT  (+/- 180 meters Scaled)
 JV0220
 JV0220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ744852(NAD 83)
 JV0220
 JV0220                          SUPERSEDED SURVEY CONTROL
 JV0220
 JV0220  NGVD 29 (11/26/84)  185.426  (m)          608.35   (f) ADJUSTED    2 0
 JV0220
 JV0220.Superseded values are not recommended for survey control.
 JV0220
 JV0220.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0220.See file dsdata.pdf to determine how the superseded data were derived.
 JV0220
 JV0220_MARKER: DB = BENCH MARK DISK
 JV0220_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0220_STAMPING: F 99 1960
 JV0220_MARK LOGO: CGS
 JV0220_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0220+STABILITY: SURFACE MOTION
 JV0220_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0220+SATELLITE: SATELLITE OBSERVATIONS - October 10, 2004
 JV0220
 JV0220  HISTORY     - Date     Condition        Report By
 JV0220  HISTORY     - 1960     MONUMENTED       CGS
 JV0220  HISTORY     - 1971     GOOD             NGS
 JV0220  HISTORY     - 20041010 GOOD             GEOCAC
 JV0220
 JV0220                          STATION DESCRIPTION
 JV0220
 JV0220'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0220'0.8 MI E FROM JARRETTSVILLE.
 JV0220'ABOUT 0.8 MILE EAST ALONG STATE HIGHWAY 23 FROM THE INTERSECTION
 JV0220'OF STATE HIGHWAY 165 AT JARRETTSVILLE, AT A POINT WHERE A DOUBLE
 JV0220'STEEL TOWER TRANSMISSION LINE CROSSES OVER THE HIGHWAY, 48 FEET
 JV0220'NORTH OF THE CENTER LINE OF THE HIGHWAY, 4 1/2 FEET NORTHWEST OF
 JV0220'THE SOUTHEAST LEG OF STEEL POWER LINE TOWER NO. 137E (EASTERNMOST
 JV0220'ONE OF TWO STEEL TOWERS), ABOUT 3 FEET BELOW THE LEVEL OF THE
 JV0220'HIGHWAY, AND SET IN TOP OF A CONCRETE POST PROJECTING 4 INCHES.
 JV0220
 JV0220                          STATION RECOVERY (1971)
 JV0220
 JV0220'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0220'RECOVERED IN GOOD CONDITION.
 JV0220
 JV0220                          STATION RECOVERY (2004)
 JV0220
 JV0220'RECOVERY NOTE BY GEOCACHING 2004 (MFL)
 JV0220'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5716 ***********************************************************************
 HV5716  DESIGNATION -  FACE
 HV5716  PID         -  HV5716
 HV5716  STATE/COUNTY-  MD/TALBOT
 HV5716  COUNTRY     -  US
 HV5716  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5716
 HV5716                         *CURRENT SURVEY CONTROL
 HV5716  ______________________________________________________________________
 HV5716* NAD 83(1991) POSITION- 38 48 30.79658(N) 076 10 56.15373(W)   ADJUSTED
 HV5716* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5716  ______________________________________________________________________
 HV5716  GEOID HEIGHT    -        -34.380 (meters)                     GEOID18
 HV5716  LAPLACE CORR    -         -4.40  (seconds)                    DEFLEC18
 HV5716  HORZ ORDER      -  THIRD
 HV5716
 HV5716.The horizontal coordinates were established by classical geodetic methods
 HV5716.and adjusted by the National Geodetic Survey in January 1992.
 HV5716
 HV5716.The orthometric height was scaled from a topographic map.
 HV5716
 HV5716.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5716.GEOID18 height accuracy estimate available here.
 HV5716
 HV5716.Click photographs - Photos may exist for this station.
 HV5716
 HV5716.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5716
 HV5716. The following values were computed from the NAD 83(1991) position.
 HV5716
 HV5716;                    North         East     Units Scale Factor Converg.
 HV5716;SPC MD       -   127,072.314   471,023.481   MT  0.99995053   +0 30 47.7
 HV5716;SPC MD       -   416,903.08  1,545,349.54   sFT  0.99995053   +0 30 47.7
 HV5716;UTM  18      - 4,296,195.827   397,348.723   MT  0.99972975   -0 44 27.7
 HV5716
 HV5716!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5716!SPC MD       -   1.00000512  x   0.99995053  =   0.99995565
 HV5716!UTM  18      -   1.00000512  x   0.99972975  =   0.99973487
 HV5716
 HV5716_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9734896195(NAD 83)
 HV5716
 HV5716                          SUPERSEDED SURVEY CONTROL
 HV5716
 HV5716  NAD 83(1986)-  38 48 30.79221(N)    076 10 56.16745(W) AD(       ) 3
 HV5716  NAD 27      -  38 48 30.34000(N)    076 10 57.36300(W) AD(       ) 3
 HV5716  USSD        -  38 48 30.72500(N)    076 10 57.13500(W) AD(       ) 3
 HV5716
 HV5716.Superseded values are not recommended for survey control.
 HV5716
 HV5716.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5716.See file dsdata.pdf to determine how the superseded data were derived.
 HV5716
 HV5716_MARKER: H = DRILL HOLE
 HV5716_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5716_PROJECTION: PROJECTING 10 CENTIMETERS
 HV5716_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5716
 HV5716  HISTORY     - Date     Condition        Report By
 HV5716  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5716  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5716
 HV5716                          STATION DESCRIPTION
 HV5716
 HV5716'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5716'STATION IS ON THE SOUTHEASTERN SHORE OF LEEDS CREEK, ABOUT 1 MILE
 HV5716'NE OF MILES RIVER, AND NEAR THE NORTHEASTERN SIDE OF ENTRANCE TO A
 HV5716'SMALL COVE, IN A FIELD, ABOUT 5 FEET ABOVE HIGH WATER, 130 YARDS
 HV5716'E OF BANK, 150 YARDS S OF BANK, 300 YARDS WNW OF LARGE BRICK
 HV5716'HOUSE, AND 110 YARDS NNW OF TWO VERY LARGE CEDAR TREES.  STATION
 HV5716'MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5716'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5716'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV5716'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS
 HV5716'CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES
 HV5716'BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV5716'POINTS OF REFERENCE ARE AS FOLLOWS--SPINDLE ON TOWER OF HOUSE, 3/8
 HV5716'MILE, S 21 DEG 6 MIN W.  TANGENT OF WOODS, 1 MILE, S 47 DEG 27
 HV5716'MIN W.  LEFT CORNER OF HOUSE, 3/8 MILE, N 59 DEG 44 MIN W.  RIGHT
 HV5716'ONE OF THREE LARGE CEDAR TREES, 111 YARDS, N 33 DEG 41 MIN W. NEAR
 HV5716'PEAK OF HOUSE, 1/2 MILE, N 27 DEG 3 MIN E.  BRICK SMOKESTACK AT
 HV5716'TUNIS MILLS, 1-1/8 MILES, N 46 DEG 49 MIN E.  W PEAK OF LARGE
 HV5716'BARN, 400 YARDS, S 87 DEG 56 MIN E.  RIGHT CORNER OF LARGE BRICK
 HV5716'HOUSE, 300 YARDS, S 70 DEG 52 MIN E.  LEFT PEAK OF BARN CUPOLA,
 HV5716'1/4 MILE, S 6 DEG 58 MIN E.
 HV5716
 HV5716                          STATION RECOVERY (1940)
 HV5716
 HV5716'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5716'STATION MARK SEARCHED FOR IN CULTIVATED FIELD, AT APPROXIMATE
 HV5716'POSITION AS OBTAINED BY SEXTANT FROM REFERENCE OBJECTS AS
 HV5716'DESCRIBED IN ORIGINAL DESCRIPTION.
 HV5716'
 HV5716'MARK EVIDENTLY HAS BEEN PLOWED OUT.  FARMER ON PLACE WHO WAS
 HV5716'INTERVIEWED, CLAIMS HE HAS NEVER SEEN THE MONUMENT.
 HV5716'
 HV5716'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7058 ***********************************************************************
 HV7058  DESIGNATION -  FACT 1908
 HV7058  PID         -  HV7058
 HV7058  STATE/COUNTY-  MD/ST MARYS
 HV7058  COUNTRY     -  US
 HV7058  USGS QUAD   -  ROCK POINT (2016)
 HV7058
 HV7058                         *CURRENT SURVEY CONTROL
 HV7058  ______________________________________________________________________
 HV7058* NAD 83(1993) POSITION- 38 20 12.75506(N) 076 50 30.38280(W)   ADJUSTED
 HV7058* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7058  ______________________________________________________________________
 HV7058  GEOID HEIGHT    -        -33.663 (meters)                     GEOID18
 HV7058  LAPLACE CORR    -         -1.55  (seconds)                    DEFLEC18
 HV7058  HORZ ORDER      -  THIRD
 HV7058
 HV7058.The horizontal coordinates were established by classical geodetic methods
 HV7058.and adjusted by the National Geodetic Survey in November 1994.
 HV7058
 HV7058.The orthometric height was scaled from a topographic map.
 HV7058
 HV7058.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7058.GEOID18 height accuracy estimate available here.
 HV7058
 HV7058.Click photographs - Photos may exist for this station.
 HV7058
 HV7058.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7058
 HV7058. The following values were computed from the NAD 83(1993) position.
 HV7058
 HV7058;                    North         East     Units Scale Factor Converg.
 HV7058;SPC MD       -    74,408.204   413,833.559   MT  0.99999379   +0 05 57.5
 HV7058;SPC MD       -   244,120.92  1,357,718.93   sFT  0.99999379   +0 05 57.5
 HV7058;UTM  18      - 4,244,798.302   339,033.305   MT  0.99991910   -1 08 33.6
 HV7058
 HV7058!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7058!SPC MD       -   1.00000532  x   0.99999379  =   0.99999911
 HV7058!UTM  18      -   1.00000532  x   0.99991910  =   0.99992442
 HV7058
 HV7058:                Primary Azimuth Mark                     Grid Az
 HV7058:SPC MD       -  FARR 1908                                153 54 21.6
 HV7058:UTM  18      -  FARR 1908                                155 08 52.7
 HV7058
 HV7058_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3903344798(NAD 83)
 HV7058
 HV7058|---------------------------------------------------------------------|
 HV7058| PID    Reference Object                     Distance      Geod. Az  |
 HV7058|                                                           dddmmss.s |
 HV7058| HV7041 PERRY 1908                          APPROX. 1.6 KM 0510841.1 |
 HV7058| HV7060 FARR 1908                           APPROX. 2.2 KM 1540019.1 |
 HV7058|---------------------------------------------------------------------|
 HV7058
 HV7058                          SUPERSEDED SURVEY CONTROL
 HV7058
 HV7058  NAD 83(1991)-  38 20 12.75459(N)    076 50 30.38720(W) AD(       ) 3
 HV7058  NAD 83(1986)-  38 20 12.75501(N)    076 50 30.39853(W) AD(       ) 3
 HV7058  NAD 27      -  38 20 12.24500(N)    076 50 31.47200(W) AD(       ) 3
 HV7058  USSD        -  38 20 12.98600(N)    076 50 31.56000(W) AD(       ) 3
 HV7058
 HV7058.Superseded values are not recommended for survey control.
 HV7058
 HV7058.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7058.See file dsdata.pdf to determine how the superseded data were derived.
 HV7058
 HV7058_MARKER: H = DRILL HOLE
 HV7058_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7058_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7058+STABILITY: SURFACE MOTION
 HV7058
 HV7058  HISTORY     - Date     Condition        Report By
 HV7058  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7058  HISTORY     - 1933     MARK NOT FOUND   CGS
 HV7058
 HV7058                          STATION DESCRIPTION
 HV7058
 HV7058'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7058'ON THE EASTERN SHORE OF WICOMICO RIVER, ON MILLS POINT, ON S SIDE
 HV7058'OF MOUTH OF CHAPTICO BAY, ON A LONG POINT COVERED ON ITS SOUTHERN
 HV7058'SIDE WITH GUM AND CEDAR TREES, ABOUT 10 FEET ABOVE HIGH WATER, 23
 HV7058'YARDS FROM EXTREME END OF TOP OF BANK, 6 YARDS N OF EDGE OF BANK,
 HV7058'AND 8 YARDS SE OF EDGE OF BANK.  STATION MARK IS CENTER OF
 HV7058'STANDARD MONUMENT OF MARYLAND SHELL FISH SURVEY, WHICH IS MADE OF
 HV7058'CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE AT THE TOP AND
 HV7058'BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND SHOWS A CENTER
 HV7058'HOLE SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK LETTERS M.S.F.C.
 HV7058'ARRANGED AROUND THE VERTEX, AND THE LETTERS U.S.C.S. UNDERNEATH
 HV7058'THE BASE OF THE TRIANGLE.  THE CENTER HOLE IS ALWAYS AT THE CENTER
 HV7058'OF THE MONUMENT AND IF THE MARKING HAS BEEN BROKEN OFF WITHOUT
 HV7058'DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE
 HV7058'USED AS THE LOCATION OF THE STATION. THE MONUMENT IS SET
 HV7058'VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5 INCHES
 HV7058'ABOVE THE SURFACE. DISTANCES AND BEARINGS FROM STATION TO VARIOUS
 HV7058'POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 28-INCH OAK TREE,
 HV7058'6.37 METERS (20.9 FEET), S 49 DEG 3 MIN W.  CHIMNEY ON ELL END OF
 HV7058'STODDARD HOUSE, 1-7/8 MILES, N 30 DEG 5 MIN W.  CHIMNEY ON KEY
 HV7058'HOUSE, 2-1/8 MILES, N 12 DEG 41 MIN E.  NEAR PEAK OF ROOF OF LARGE
 HV7058'HOUSE, 1/4 MILE, N 87 DEG 12 MIN E.  NAIL IN BLAZE IN 6-INCH CEDAR
 HV7058'TREE, 16.26 METERS (53.3 FEET), S 65 DEG 28 MIN E.  NEAR CHIMNEY
 HV7058'OF LARGE HOUSE NEAR SHORE, 5/8 MILE, S 49 DEG 20 MIN E.  W END OF
 HV7058'PEAK OF HOUSE ON CHAPTICO WHARF, 7/8 MILE, S 24 DEG 20 MIN E.
 HV7058'NAIL IN BLAZE IN 7-INCH CEDAR TREE, 6.20 METERS (20.34 FEET), S 2
 HV7058'DEG 6 MIN E.
 HV7058
 HV7058                          STATION RECOVERY (1933)
 HV7058
 HV7058'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (HEC)
 HV7058'STATION LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6032 ***********************************************************************
 JV6032  DESIGNATION -  FADELY
 JV6032  PID         -  JV6032
 JV6032  STATE/COUNTY-  MD/BALTIMORE
 JV6032  COUNTRY     -  US
 JV6032  USGS QUAD   -  REISTERSTOWN (2016)
 JV6032
 JV6032                         *CURRENT SURVEY CONTROL
 JV6032  ______________________________________________________________________
 JV6032* NAD 83(1991) POSITION- 39 25 46.26424(N) 076 48 14.15917(W)   ADJUSTED
 JV6032* NAVD 88 ORTHO HEIGHT -   216.    (meters)      709.    (feet) SCALED
 JV6032  ______________________________________________________________________
 JV6032  GEOID HEIGHT    -        -32.118 (meters)                     GEOID18
 JV6032  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 JV6032  HORZ ORDER      -  FIRST
 JV6032
 JV6032.The horizontal coordinates were established by classical geodetic methods
 JV6032.and adjusted by the National Geodetic Survey in January 1992.
 JV6032
 JV6032.The orthometric height was scaled from a topographic map.
 JV6032
 JV6032.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6032.GEOID18 height accuracy estimate available here.
 JV6032
 JV6032.Click photographs - Photos may exist for this station.
 JV6032
 JV6032.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6032
 JV6032. The following values were computed from the NAD 83(1991) position.
 JV6032
 JV6032;                    North         East     Units Scale Factor Converg.
 JV6032;SPC MD       -   195,707.782   416,881.332   MT  0.99999648   +0 07 23.0
 JV6032;SPC MD       -   642,084.61  1,367,718.17   sFT  0.99999648   +0 07 23.0
 JV6032;UTM  18      - 4,365,995.052   344,738.063   MT  0.99989681   -1 08 45.4
 JV6032
 JV6032!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6032!SPC MD       -   0.99997119  x   0.99999648  =   0.99996767
 JV6032!UTM  18      -   0.99997119  x   0.99989681  =   0.99986800
 JV6032
 JV6032:                Primary Azimuth Mark                     Grid Az
 JV6032:SPC MD       -  UHLER                                    063 11 57.3
 JV6032:UTM  18      -  UHLER                                    064 28 05.7
 JV6032
 JV6032_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4473865995(NAD 83)
 JV6032
 JV6032|---------------------------------------------------------------------|
 JV6032| PID    Reference Object                     Distance      Geod. Az  |
 JV6032|                                                           dddmmss.s |
 JV6032| CA9396 FADELY RM 1                          34.534 METERS 04344     |
 JV6032| JV6038 UHLER                               APPROX. 3.0 KM 0631920.3 |
 JV6032| JV6033 PLEASANT HILL METRO WATER TANK      APPROX. 1.2 KM 0905533.6 |
 JV6032| JV6040 ROSEWOOD STACK                      APPROX. 2.8 KM 1020322.9 |
 JV6032| CA9397 FADELY RM 2                          41.447 METERS 13023     |
 JV6032| JV6036 RANDALLSTOWN MC DONOUGH SCH TK      APPROX. 4.5 KM 1454756.9 |
 JV6032| CA9395 FADELY AZ MK                                       1460536.7 |
 JV6032| JV6041 MT WILSON SANITORIUM TANK           APPROX. 6.2 KM 1463853.6 |
 JV6032| JV6026 REISTERSTOWN METRO WATER TANK       APPROX. 5.3 KM 3365947.0 |
 JV6032|---------------------------------------------------------------------|
 JV6032
 JV6032                          SUPERSEDED SURVEY CONTROL
 JV6032
 JV6032  NAD 83(1986)-  39 25 46.26185(N)    076 48 14.16629(W) AD(       ) 1
 JV6032  NAD 27      -  39 25 45.88300(N)    076 48 15.24500(W) AD(       ) 1
 JV6032
 JV6032.Superseded values are not recommended for survey control.
 JV6032
 JV6032.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6032.See file dsdata.pdf to determine how the superseded data were derived.
 JV6032
 JV6032_MARKER: DS = TRIANGULATION STATION DISK
 JV6032_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6032_STAMPING: FADELY 1938
 JV6032_MARK LOGO: CGS
 JV6032_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6032+STABILITY: SURFACE MOTION
 JV6032
 JV6032  HISTORY     - Date     Condition        Report By
 JV6032  HISTORY     - 1938     MONUMENTED       CGS
 JV6032
 JV6032                          STATION DESCRIPTION
 JV6032
 JV6032'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV6032'THE STATION IS ON THE PROPERTY OF MRS. A.L. FADELY.
 JV6032'
 JV6032'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV6032'BRONZE DISKS SET IN CONCRETE.
 JV6032'
 JV6032'AZIMUTH MARK IS SE OF STATION ON S SIDE OF PLEASANT HILL ROAD E
 JV6032'OF FEATHER BED LANE BEHIND PRIVET HEDGE ON PROPERTY OF
 JV6032'MR. DEUBELL.  THE AZIMUTH MARK IS FLUSH.
 JV6032'
 JV6032'TO REACH FROM BALTIMORE, GO NW ON REISTERSTOWN ROAD TO THE
 JV6032'UNDERPASS AT WESTERN MARYLAND RAILROAD AT OWINGS MILLS.  CONTINUE
 JV6032'ON REISTERSTOWN ROAD 0.9 MILE TO PLEASANT HILL ROAD.  TURN LEFT
 JV6032'ON PLEASANT HILL ROAD 0.55 MILE TO FEATHER BED LANE.  TURN RIGHT
 JV6032'ON AN UNIMPROVED ROAD 0.2 MILE TO THE STATION.  MARK IS ON S EDGE
 JV6032'OF WOODS AND W OF ROAD.
 JV6032'
 JV6032'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4691 ***********************************************************************
 JV4691  DESIGNATION -  FAHRNEY
 JV4691  PID         -  JV4691
 JV4691  STATE/COUNTY-  MD/WASHINGTON
 JV4691  COUNTRY     -  US
 JV4691  USGS QUAD   -  FUNKSTOWN (2017)
 JV4691
 JV4691                         *CURRENT SURVEY CONTROL
 JV4691  ______________________________________________________________________
 JV4691* NAD 83(1991) POSITION- 39 33 47.34950(N) 077 39 15.29004(W)   ADJUSTED
 JV4691* NAVD 88 ORTHO HEIGHT -   186.    (meters)      610.    (feet) SCALED
 JV4691  ______________________________________________________________________
 JV4691  GEOID HEIGHT    -        -33.771 (meters)                     GEOID18
 JV4691  LAPLACE CORR    -          8.39  (seconds)                    DEFLEC18
 JV4691  HORZ ORDER      -  SECOND
 JV4691
 JV4691.The horizontal coordinates were established by classical geodetic methods
 JV4691.and adjusted by the National Geodetic Survey in January 1992.
 JV4691
 JV4691.The orthometric height was scaled from a topographic map.
 JV4691
 JV4691.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4691.GEOID18 height accuracy estimate available here.
 JV4691
 JV4691.Click photographs - Photos may exist for this station.
 JV4691
 JV4691.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4691
 JV4691. The following values were computed from the NAD 83(1991) position.
 JV4691
 JV4691;                    North         East     Units Scale Factor Converg.
 JV4691;SPC MD       -   210,728.054   343,776.177   MT  1.00002175   -0 24 38.3
 JV4691;SPC MD       -   691,363.62  1,127,872.34   sFT  1.00002175   -0 24 38.3
 JV4691;UTM  18      - 4,382,638.541   271,981.546   MT  1.00024017   -1 41 28.7
 JV4691
 JV4691!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4691!SPC MD       -   0.99997615  x   1.00002175  =   0.99999790
 JV4691!UTM  18      -   0.99997615  x   1.00024017  =   1.00021631
 JV4691
 JV4691:                Primary Azimuth Mark                     Grid Az
 JV4691:SPC MD       -  WAGNERS                                  057 26 14.8
 JV4691:UTM  18      -  WAGNERS                                  058 43 05.2
 JV4691
 JV4691_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7198182638(NAD 83)
 JV4691
 JV4691|---------------------------------------------------------------------|
 JV4691| PID    Reference Object                     Distance      Geod. Az  |
 JV4691|                                                           dddmmss.s |
 JV4691| JV3576 WAGNERS                             APPROX. 1.2 KM 0570136.5 |
 JV4691| CJ8128 FAHRNEY RM 1                         17.240 METERS 09904     |
 JV4691| CJ8129 FAHRNEY RM 2                          7.646 METERS 27105     |
 JV4691|---------------------------------------------------------------------|
 JV4691
 JV4691                          SUPERSEDED SURVEY CONTROL
 JV4691
 JV4691  NAD 83(1986)-  39 33 47.34932(N)    077 39 15.29993(W) AD(       ) 2
 JV4691  NAD 27      -  39 33 46.99500(N)    077 39 16.32970(W) AD(       ) 2
 JV4691
 JV4691.Superseded values are not recommended for survey control.
 JV4691
 JV4691.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4691.See file dsdata.pdf to determine how the superseded data were derived.
 JV4691
 JV4691_MARKER: DS = TRIANGULATION STATION DISK
 JV4691_SETTING: 66 = SET IN ROCK OUTCROP
 JV4691_STAMPING: FAHRNEY 1957
 JV4691_MARK LOGO: CGS
 JV4691_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4691+STABILITY: POSITION/ELEVATION WELL
 JV4691
 JV4691  HISTORY     - Date     Condition        Report By
 JV4691  HISTORY     - 1958     MONUMENTED       CGS
 JV4691  HISTORY     - 20081223 MARK NOT FOUND   MDSHA
 JV4691
 JV4691                          STATION DESCRIPTION
 JV4691
 JV4691'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4691'STATION IS LOCATED ON A BARE KNOLL ABOUT 6-1/2 MILES SOUTHEAST
 JV4691'OF THE CENTER OF HAGERSTOWN AND ABOUT 0.8 MILE SOUTH OF THE
 JV4691'JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE HIGHWAY NO. 66.  STATION
 JV4691'IS SET IN OUTCROPPING ROCK AND AT THE HIGHEST POINT OF
 JV4691'KNOLL.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED FAHRNEY
 JV4691'1957.
 JV4691'
 JV4691'REFERENCE MARK NO. 1 IS SET IN OUTCROPPING ROCK.  THE MARK IS
 JV4691'SET FLUSH AND THE DISK IS STAMPED FAHRNEY NO 1 1957.
 JV4691'
 JV4691'REFERENCE MARK NO. 2 IS SET IN OUTCROPPING ROCK.  THE MARK IS
 JV4691'SET FLUSH AND THE DISK IS STAMPED FAHRNEY NO 2 1957.
 JV4691'
 JV4691'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JV4691'HIGHWAY NO. 66 WHICH IS ABOUT 17.7 MILES NORTHWEST OF FREDERICK,
 JV4691'GO SOUTHERLY ON STATE HIGHWAY NO. 66 FOR 0.45 MILE TO SIDE ROAD
 JV4691'RIGHT.  TURN RIGHT AND GO WESTERLY ON ROCKY ROAD FOR 0.65
 JV4691'MILE TO LANE ON RIGHT.  CONTINUE STRAIGHT AHEAD THROUGH GATE
 JV4691'AND GO SOUTHERLY ON LANE FOR 0.15 MILE TO WOOD GATE ON LEFT AT
 JV4691'POINT WHERE LANE TURNS RIGHT.  TURN LEFT THROUGH WOOD GATE
 JV4691'AND GO EASTERLY ON TRACK ROAD FOR 0.15 MILE TO WOOD GATE.
 JV4691'PASS THROUGH GATE AND GO EASTERLY FOR 0.05 MILE, TURN LEFT AND
 JV4691'GO NORTHERLY FOR 0.05 MILE TO TOP OF KNOLL AND STATION.
 JV4691'
 JV4691'NOTE--STATION WAGNERS 1955 IS VISIBLE FROM GROUND AND MAY
 JV4691'BE USED AS AN AZIMUTH MARK.
 JV4691'
 JV4691'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV4691
 JV4691                          STATION RECOVERY (2008)
 JV4691
 JV4691'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 JV4691'MARK APPEARS TO BE DESTROYED. A RESIDENTIAL DEVELOPMENT EXISTS IN THE
 JV4691'AREA NOW.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1259 ***********************************************************************
 JV1259  DESIGNATION -  FAIR
 JV1259  PID         -  JV1259
 JV1259  STATE/COUNTY-  MD/BALTIMORE
 JV1259  COUNTRY     -  US
 JV1259  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1259
 JV1259                         *CURRENT SURVEY CONTROL
 JV1259  ______________________________________________________________________
 JV1259* NAD 83(1991) POSITION- 39 27 00.65397(N) 076 38 18.38426(W)   ADJUSTED
 JV1259* NAVD 88 ORTHO HEIGHT -   122.068 (meters)      400.48  (feet) ADJUSTED
 JV1259  ______________________________________________________________________
 JV1259  GEOID HEIGHT    -        -32.429 (meters)                     GEOID18
 JV1259  LAPLACE CORR    -         -4.61  (seconds)                    DEFLEC18
 JV1259  DYNAMIC HEIGHT  -        122.004 (meters)      400.27  (feet) COMP
 JV1259  MODELED GRAVITY -    980,099.3   (mgal)                       NAVD 88
 JV1259
 JV1259  HORZ ORDER      -  SECOND
 JV1259  VERT ORDER      -  SECOND    CLASS 0
 JV1259
 JV1259.The horizontal coordinates were established by classical geodetic methods
 JV1259.and adjusted by the National Geodetic Survey in January 1992.
 JV1259
 JV1259.The orthometric height was determined by differential leveling and
 JV1259.adjusted by the NATIONAL GEODETIC SURVEY
 JV1259.in June 1991.
 JV1259
 JV1259.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1259.GEOID18 height accuracy estimate available here.
 JV1259
 JV1259.Click photographs - Photos may exist for this station.
 JV1259
 JV1259.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1259
 JV1259.The dynamic height is computed by dividing the NAVD 88
 JV1259.geopotential number by the normal gravity value computed on the
 JV1259.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1259.degrees latitude (g = 980.6199 gals.).
 JV1259
 JV1259.The modeled gravity was interpolated from observed gravity values.
 JV1259
 JV1259. The following values were computed from the NAD 83(1991) position.
 JV1259
 JV1259;                    North         East     Units Scale Factor Converg.
 JV1259;SPC MD       -   198,045.456   431,121.115   MT  1.00000003   +0 13 36.9
 JV1259;SPC MD       -   649,754.13  1,414,436.52   sFT  1.00000003   +0 13 36.9
 JV1259;UTM  18      - 4,368,016.633   359,024.282   MT  0.99984470   -1 02 28.5
 JV1259
 JV1259!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1259!SPC MD       -   0.99998594  x   1.00000003  =   0.99998597
 JV1259!UTM  18      -   0.99998594  x   0.99984470  =   0.99983064
 JV1259
 JV1259:                Primary Azimuth Mark                     Grid Az
 JV1259:SPC MD       -  LINE                                     306 08 53.0
 JV1259:UTM  18      -  LINE                                     307 24 58.4
 JV1259
 JV1259_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5902468016(NAD 83)
 JV1259
 JV1259|---------------------------------------------------------------------|
 JV1259| PID    Reference Object                     Distance      Geod. Az  |
 JV1259|                                                           dddmmss.s |
 JV1259| JV5448 TIMONIUM MUNICIPAL TANK             APPROX. 1.4 KM 0891221.0 |
 JV1259| JV1262 FAIR 2 RESET                         21.301 METERS 12622     |
 JV1259| JV1260 FAIR RM 1                            24.740 METERS 14744     |
 JV1259| JV1261 FAIR RM 2                            26.338 METERS 25322     |
 JV1259| JV1267 LINE                                APPROX. 1.5 KM 3062229.9 |
 JV1259|---------------------------------------------------------------------|
 JV1259
 JV1259                          SUPERSEDED SURVEY CONTROL
 JV1259
 JV1259  NAD 83(1986)-  39 27 00.65044(N)    076 38 18.39099(W) AD(       ) 2
 JV1259  NAD 27      -  39 27 00.26720(N)    076 38 19.50000(W) AD(       ) 2
 JV1259  NGVD 29             122.28   (m)          401.2    (f) LEVELING    3  
 JV1259  NGVD 29 (11/26/84)  122.283  (m)          401.19   (f) ADJUSTED    2 0
 JV1259
 JV1259.Superseded values are not recommended for survey control.
 JV1259
 JV1259.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1259.See file dsdata.pdf to determine how the superseded data were derived.
 JV1259
 JV1259_MARKER: DS = TRIANGULATION STATION DISK
 JV1259_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1259_STAMPING: FAIR 1959
 JV1259_MARK LOGO: CGS
 JV1259_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1259+STABILITY: SURFACE MOTION
 JV1259
 JV1259  HISTORY     - Date     Condition        Report By
 JV1259  HISTORY     - 1959     MONUMENTED       CGS
 JV1259  HISTORY     - 1959     GOOD             CGS
 JV1259  HISTORY     - 1970     GOOD             NGS
 JV1259
 JV1259                          STATION DESCRIPTION
 JV1259
 JV1259'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV1259'STATION IS LOCATED ALONG THE EAST SIDE OF U.S. HIGHWAY NO. 111
 JV1259'ABOUT 1.2 MILES NORTHWEST OF TIMONIUM.  STATION IS 18 FEET
 JV1259'SOUTHEAST OF A WILD CHERRY TREE WITH TRIANGLE BLAZE, 47 FEET
 JV1259'NORTHEAST OF CENTERLINE OF NORTH BOUND TRAFFIC LANE OF U.S.
 JV1259'HIGHWAY NO. 111, 15 FEET WEST OF A ROW OF WHITE POSTS AND 2.5 FEET
 JV1259'WEST OF WITNESS MARKER.  STATION MARK IS A STANDARD DISK
 JV1259'STAMPED FAIR 1959 SET IN A 12X12 INCH CONCRETE MONUMENT FLUSH
 JV1259'WITH THE GROUND.
 JV1259'
 JV1259'TO REACH FROM THE WEST JUNCTION OF U.S. HIGHWAY NO. 111 AND
 JV1259'BALTIMORE BELTWAY WHICH IS ABOUT 2-1/2 MILES NORTHWEST OF TOWSON,
 JV1259'GO NORTHERLY ON U.S. HIGHWAY NO. U.S. 111 FOR 2.05 MILES TO AN 18
 JV1259'INCH WILD CHERRY TREE ON RIGHT AND STATION ON RIGHT (EAST) SIDE
 JV1259'OF HIGHWAY AS DESCRIBED.
 JV1259'
 JV1259'REFERENCE MARK NO. 1, A STANDARD DISK SET IN A 12X12 INCH
 JV1259'CONCRETE MONUMENT AND STAMPED FAIR NO 1 1959, IS 78 FEET SOUTH
 JV1259'OF THE SOUTH ONE OF A ROW OF WHITE POSTS AND 31 FEET EAST OF THE
 JV1259'CENTERLINE OF NORTH BOUND TRAFFIC LANE OF U.S. HIGHWAY NO. 111.
 JV1259'
 JV1259'REFERENCE MARK NO. 2, A STANDARD DISK, STAMPED FAIR NO 2 1959,
 JV1259'IS 30 FEET WEST OF THE CENTERLINE OF NORTH BOUND TRAFFIC LANE OF
 JV1259'U.S. HIGHWAY NO. 111, 8-1/2 FEET EAST OF A DITCH IN THE MEDIAN
 JV1259'STRIP, 19 FEET SOUTHEAST OF A SMALL TREE AND 35 FEET SOUTH OF A
 JV1259'SMALL TREE.  THE MONUMENT IS FLUSH WITH THE GROUND.
 JV1259'
 JV1259'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV1259
 JV1259                          STATION RECOVERY (1959)
 JV1259
 JV1259'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV1259'2.2 MI N FROM LUTHERVILLE.
 JV1259'2.2 MILES NORTH ALONG U.S. HIGHWAY 111 FROM THE JUNCTION OF
 JV1259'THE BALTIMORE BELTWAY IN THE VICINITY OF LUTHERVILLE, 47 FEET
 JV1259'NORTHEAST OF THE CENTER LINE OF THE NORTH BOUND LANE OF THE
 JV1259'HIGHWAY, 18 FEET SOUTHEAST OF A 20-INCH WILD CHERRY TREE WITH
 JV1259'A TRIANGULAR BLAZE, 15 FEET WEST OF A ROW OF WHITE POST, 2 1/2
 JV1259'FEET EAST OF A METAL WITNESS POST, SET IN THE TOP OF A CONCRETE
 JV1259'POST FLUSH WITH THE GROUND AND ABOUT 3 FEET ABOVE THE LEVEL
 JV1259'OF THE HIGHWAY.
 JV1259
 JV1259                          STATION RECOVERY (1970)
 JV1259
 JV1259'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (LFS)
 JV1259'THE STATION MARK, REFERENCE MARK 1 AND REFERENCE MARK 2 WERE
 JV1259'RECOVERED AND FOUND TO BE IN GOOD CONDITION.  THE STATION MARK
 JV1259'AND REFERENCE MARK NO. 1 ARE IN THE WAY OF THE CONSTRUCTION OF A
 JV1259'NEW TWELVE FOOT LANE TO BE ADDED TO THE NORTHBOUND TRAFFIC LANES
 JV1259'OF I-83.  REFERENCE MARK NO. 2 WILL PROBABLY NOT BE DISTURBED.
 JV1259'
 JV1259'A NEW STATION FAIR 2 WAS ESTABLISHED TO REPLACE THIS MONUMENT.
 JV1259'
 JV1259'THE STATION MONUMENT, REFERENCE MARK NO. 1 AND REFERENCE
 JV1259'MARK NO. 2 WERE LEFT INTACT, AS THESE MARKERS CARRY ELEVATIONS
 JV1259'AS WELL AS GEODETIC CONTROL, AND WILL BE USED BY THE MARYLAND
 JV1259'BUREAU OF LOCATION AND SURVEYS, UNTIL SUCH TIME THEY ARE DESTROYED
 JV1259'BY CONSTRUCTION.
 JV1259'
 JV1259'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV1259'1.2 MILES NORTHWEST OF TIMONIUM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4924 ***********************************************************************
 JV4924  DESIGNATION -  FAIR
 JV4924  PID         -  JV4924
 JV4924  STATE/COUNTY-  MD/KENT
 JV4924  COUNTRY     -  US
 JV4924  USGS QUAD   -  HANESVILLE (2016)
 JV4924
 JV4924                         *CURRENT SURVEY CONTROL
 JV4924  ______________________________________________________________________
 JV4924* NAD 83(1991) POSITION- 39 15 38.13606(N) 076 11 50.31952(W)   ADJUSTED
 JV4924* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV4924  ______________________________________________________________________
 JV4924  GEOID HEIGHT    -        -33.253 (meters)                     GEOID18
 JV4924  LAPLACE CORR    -         -1.76  (seconds)                    DEFLEC18
 JV4924  HORZ ORDER      -  THIRD
 JV4924
 JV4924.The horizontal coordinates were established by classical geodetic methods
 JV4924.and adjusted by the National Geodetic Survey in January 1992.
 JV4924
 JV4924.The orthometric height was scaled from a topographic map.
 JV4924
 JV4924.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4924.GEOID18 height accuracy estimate available here.
 JV4924
 JV4924.Click photographs - Photos may exist for this station.
 JV4924
 JV4924.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4924
 JV4924. The following values were computed from the NAD 83(1991) position.
 JV4924
 JV4924;                    North         East     Units Scale Factor Converg.
 JV4924;SPC MD       -   177,240.179   469,275.473   MT  0.99997235   +0 30 13.7
 JV4924;SPC MD       -   581,495.49  1,539,614.61   sFT  0.99997235   +0 30 13.7
 JV4924;UTM  18      - 4,346,378.646   396,702.607   MT  0.99973138   -0 45 28.0
 JV4924
 JV4924!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4924!SPC MD       -   1.00000384  x   0.99997235  =   0.99997619
 JV4924!UTM  18      -   1.00000384  x   0.99973138  =   0.99973522
 JV4924
 JV4924:                Primary Azimuth Mark                     Grid Az
 JV4924:SPC MD       -  BUCK                                     085 05 57.5
 JV4924:UTM  18      -  BUCK                                     086 21 39.2
 JV4924
 JV4924_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9670246378(NAD 83)
 JV4924
 JV4924|---------------------------------------------------------------------|
 JV4924| PID    Reference Object                     Distance      Geod. Az  |
 JV4924|                                                           dddmmss.s |
 JV4924| CA9399 FAIR RM 2                            54.461 METERS 04435     |
 JV4924| JV4910 BUCK                                APPROX. 2.1 KM 0853611.2 |
 JV4924| CA9398 FAIR RM 1 AZIMUTH                   111.540 METERS 26226     |
 JV4924|---------------------------------------------------------------------|
 JV4924
 JV4924                          SUPERSEDED SURVEY CONTROL
 JV4924
 JV4924  NAD 83(1986)-  39 15 38.12953(N)    076 11 50.32807(W) AD(       ) 3
 JV4924  NAD 27      -  39 15 37.73500(N)    076 11 51.50000(W) AD(       ) 3
 JV4924
 JV4924.Superseded values are not recommended for survey control.
 JV4924
 JV4924.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4924.See file dsdata.pdf to determine how the superseded data were derived.
 JV4924
 JV4924_MARKER: DS = TRIANGULATION STATION DISK
 JV4924_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4924_STAMPING: FAIR 1935
 JV4924_MARK LOGO: CGS
 JV4924_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4924+STABILITY: SURFACE MOTION
 JV4924
 JV4924  HISTORY     - Date     Condition        Report By
 JV4924  HISTORY     - 1935     MONUMENTED       CGS
 JV4924  HISTORY     - 1939     GOOD             CGS
 JV4924  HISTORY     - 20060121 MARK NOT FOUND   USPSQD
 JV4924
 JV4924                          STATION DESCRIPTION
 JV4924
 JV4924'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JCP)
 JV4924'STATION FAIR IS ON THE N SHORE OF FAIRLEE CREEK ON THE EASTERN SIDE
 JV4924'OF CHESAPEAKE BAY, IN A FIELD ON THE S SIDE OF THE LANE LEADING TO
 JV4924'THE FARM TENANTED BY MR. E.H. DULIN AND OWNED BY MR. HINSON
 JV4924'ROGERS.  IT IS 29.5 METERS S OF CENTER LINE OF LANE, 132.7 METERS
 JV4924'E OF N-S FENCE LINE AND 111.45 METERS FROM JUNCTION OF DRAINAGE
 JV4924'DITCH OF THE FIELD AND E-W FENCE LINE ALONG THE LANE.
 JV4924'
 JV4924'STATION IS STANDARD SUBSURFACE MONUMENT SET WITH BRONZE DISK.
 JV4924'ABOUT 3.5 FEET BELOW SURFACE OF
 JV4924'GROUND.  SURFACE MARK IS 2-FOOT CONCRETE MONUMENT SET WITH BRONZE
 JV4924'DISK, 1.5 FEET BELOW SURFACE OF
 JV4924'GROUND.  BOTH MARKS ARE STAMPED FAIR 1935.
 JV4924'
 JV4924'REFERENCE MARK NO.1 IS IN E-W FENCE LINE ALONG LANE AND IS 29.45
 JV4924'METERS FROM N-S FENCE LINE.
 JV4924'
 JV4924'REFERENCE MARK NO.2 IS IN E-W FENCE LINE 158.095 METERS FROM
 JV4924'REFERENCE MARK NO.1 REFERENCE MARK NO.1 AND REFERENCE MARK NO.2
 JV4924'ARE MARKED, BY STANDARD BRONZE DISKS SET
 JV4924'IN 3-FOOT CONCRETE MONUMENTS SET FLUSH WITH SURFACE OF GROUND.
 JV4924'
 JV4924'STATION FAIR MAY BE REACHED BY PROCEEDING N ON 9-FOOT CONCRETE
 JV4924'ROAD FROM FAIRLEE, MARYLAND, FOR 0.5 MILE TO FORK.  BEAR LEFT ON
 JV4924'DIRT ROAD FOR 2.3 MILES.  TURN LEFT AND GO 0.5 MILE.  TURN LEFT
 JV4924'INTO PRIVATE LANE AND GO 1.5 MILES.  STATION IN FIELD TO LEFT OF
 JV4924'LANE BEYOND GATE.
 JV4924'
 JV4924'OCCUPIED WITH 66-FOOT TOWER.
 JV4924
 JV4924                          STATION RECOVERY (1939)
 JV4924
 JV4924'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4924'REFERENCE MARK NO.1 AND REFERENCE MARK NO.2 RECOVERED AS DESCRIBED
 JV4924'BY J.C. PARTINGTON IN 1935.
 JV4924'
 JV4924'STATION MARK (UNDERGROUND) WAS NOT DUG FOR DUE TO CULTIVATION.
 JV4924'
 JV4924'DESCRIPTION IS ADEQUATE.
 JV4924
 JV4924                          STATION RECOVERY (2006)
 JV4924
 JV4924'RECOVERY NOTE BY US POWER SQUADRON 2006 (DU)
 JV4924'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7196 ***********************************************************************
 HV7196  DESIGNATION -  FAIR 1933
 HV7196  PID         -  HV7196
 HV7196  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7196  COUNTRY     -  US
 HV7196  USGS QUAD   -  DEALE (2016)
 HV7196
 HV7196                         *CURRENT SURVEY CONTROL
 HV7196  ______________________________________________________________________
 HV7196* NAD 83(1991) POSITION- 38 45 06.44427(N) 076 33 15.84819(W)   ADJUSTED
 HV7196* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV7196  ______________________________________________________________________
 HV7196  GEOID HEIGHT    -        -33.545 (meters)                     GEOID18
 HV7196  LAPLACE CORR    -         -4.14  (seconds)                    DEFLEC18
 HV7196  HORZ ORDER      -  THIRD
 HV7196
 HV7196.The horizontal coordinates were established by classical geodetic methods
 HV7196.and adjusted by the National Geodetic Survey in January 1992.
 HV7196
 HV7196.The orthometric height was scaled from a topographic map.
 HV7196
 HV7196.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7196.GEOID18 height accuracy estimate available here.
 HV7196
 HV7196.Click photographs - Photos may exist for this station.
 HV7196
 HV7196.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7196
 HV7196. The following values were computed from the NAD 83(1991) position.
 HV7196
 HV7196;                    North         East     Units Scale Factor Converg.
 HV7196;SPC MD       -   120,547.544   438,733.022   MT  0.99995218   +0 16 46.8
 HV7196;SPC MD       -   395,496.40  1,439,409.92   sFT  0.99995218   +0 16 46.8
 HV7196;UTM  18      - 4,290,380.067   364,928.962   MT  0.99982466   -0 58 23.2
 HV7196
 HV7196!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7196!SPC MD       -   1.00000452  x   0.99995218  =   0.99995670
 HV7196!UTM  18      -   1.00000452  x   0.99982466  =   0.99982918
 HV7196
 HV7196_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6492890380(NAD 83)
 HV7196
 HV7196                          SUPERSEDED SURVEY CONTROL
 HV7196
 HV7196  NAD 83(1986)-  38 45 06.44202(N)    076 33 15.86082(W) AD(       ) 3
 HV7196  NAD 27      -  38 45 06.03000(N)    076 33 17.02000(W) AD(       ) 3
 HV7196
 HV7196.Superseded values are not recommended for survey control.
 HV7196
 HV7196.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7196.See file dsdata.pdf to determine how the superseded data were derived.
 HV7196
 HV7196_MARKER: DS = TRIANGULATION STATION DISK
 HV7196_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7196_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7196
 HV7196  HISTORY     - Date     Condition        Report By
 HV7196  HISTORY     - 1933     MONUMENTED       CGS
 HV7196  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV7196  HISTORY     - 20031001 MARK NOT FOUND   USPSQD
 HV7196
 HV7196                          STATION DESCRIPTION
 HV7196
 HV7196'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (ERM)
 HV7196'STATION IS LOCATED ON THE PROMINENT POINT ABOUT 0.3 MILE N OF
 HV7196'FAIRHAVEN ON THE CENTRAL PART OF THE W SHORE OF HERRING BAY.
 HV7196'LOCATED 25 METERS INSHORE OF THE 20-FOOT BANK AT THIS POINT IN A
 HV7196'VACANT LOT BETWEEN THE PROPERTIES OF W.C. GLEICHMAN, ON THE
 HV7196'NORTHWARD, AND E.H. LOWMAN TO THE SOUTHWARD.
 HV7196'
 HV7196'STATION MARK IS STANDARD BRONZE DISK IN A TILE, AS DESCRIBED.
 HV7196'
 HV7196'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE, AS
 HV7196'DESCRIBED.
 HV7196'
 HV7196'STATION MAY BE REACHED BY BOAT OR BY ROAD FROM FAIRHAVEN.
 HV7196'
 HV7196'HEIGH OF SIGNAL ABOVE STATION MARK - 6 METERS.
 HV7196
 HV7196                          STATION RECOVERY (1943)
 HV7196
 HV7196'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7196'STATION FAIR AND R.M. NO. 1 HAVE BEEN DESTROYED DURING THE
 HV7196'CONSTRUCTION OF A HOUSE.  R. M. NO. 2 WAS RECOVERED IN PLACE,
 HV7196'HOWEVER, IT HAS NO VALUE BECAUSE THE ANGLE TURNED FROM THE STATION
 HV7196'WAS A MAGNETIC AZIMUTH.  IT IS RECOMMENDED THAT STATION FAIR BE
 HV7196'CLASSIFIED AS DESTROYED.
 HV7196
 HV7196                          STATION RECOVERY (2003)
 HV7196
 HV7196'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7196'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1262 ***********************************************************************
 JV1262  DESIGNATION -  FAIR 2 RESET
 JV1262  PID         -  JV1262
 JV1262  STATE/COUNTY-  MD/BALTIMORE
 JV1262  COUNTRY     -  US
 JV1262  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1262
 JV1262                         *CURRENT SURVEY CONTROL
 JV1262  ______________________________________________________________________
 JV1262* NAD 83(1991) POSITION- 39 27 00.24438(N) 076 38 17.66691(W)   NO CHECK
 JV1262* NAVD 88 ORTHO HEIGHT -   121.68  (meters)      399.2   (feet) RESET
 JV1262  ______________________________________________________________________
 JV1262  GEOID HEIGHT    -        -32.429 (meters)                     GEOID18
 JV1262  LAPLACE CORR    -         -4.60  (seconds)                    DEFLEC18
 JV1262  HORZ ORDER      -  THIRD
 JV1262  VERT ORDER      -  THIRD
 JV1262
 JV1262.The horizontal coordinates were established by classical geodetic methods
 JV1262.and adjusted by the National Geodetic Survey in January 1992.
 JV1262
 JV1262.No horizontal observational check was made to the station.
 JV1262
 JV1262.The orthometric height was computed from unverified reset data.
 JV1262
 JV1262.No vertical observational check was made to the station.
 JV1262
 JV1262.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1262.GEOID18 height accuracy estimate available here.
 JV1262
 JV1262.Click photographs - Photos may exist for this station.
 JV1262
 JV1262.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1262
 JV1262. The following values were computed from the NAD 83(1991) position.
 JV1262
 JV1262;                    North         East     Units Scale Factor Converg.
 JV1262;SPC MD       -   198,032.892   431,138.316   MT  1.00000001   +0 13 37.4
 JV1262;SPC MD       -   649,712.91  1,414,492.96   sFT  1.00000001   +0 13 37.4
 JV1262;UTM  18      - 4,368,003.693   359,041.199   MT  0.99984464   -1 02 28.0
 JV1262
 JV1262!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1262!SPC MD       -   0.99998600  x   1.00000001  =   0.99998601
 JV1262!UTM  18      -   0.99998600  x   0.99984464  =   0.99983064
 JV1262
 JV1262:                Primary Azimuth Mark                     Grid Az
 JV1262:SPC MD       -  LINE                                     306 08 52.7
 JV1262:UTM  18      -  LINE                                     307 24 58.1
 JV1262
 JV1262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5904168003(NAD 83)
 JV1262
 JV1262|---------------------------------------------------------------------|
 JV1262| PID    Reference Object                     Distance      Geod. Az  |
 JV1262|                                                           dddmmss.s |
 JV1262| CA9401 FAIR 2 RM 4                                        13304     |
 JV1262| JV1261 FAIR RM 2                                          27651     |
 JV1262| JV1259 FAIR                                 21.301 METERS 30622     |
 JV1262| JV1267 LINE                                APPROX. 1.5 KM 3062230.1 |
 JV1262| CA9400 FAIR 2 RM 3                                        31815     |
 JV1262|---------------------------------------------------------------------|
 JV1262
 JV1262                          SUPERSEDED SURVEY CONTROL
 JV1262
 JV1262  NAD 83(1986)-  39 27 00.24085(N)    076 38 17.67365(W) AD(       ) 3
 JV1262  NAD 27      -  39 26 59.85760(N)    076 38 18.78268(W) AD(       ) 3
 JV1262  NGVD 29 (??/??/??)  121.89   (m)          399.9    (f) RESET       3  
 JV1262  NGVD 29 (07/19/86)  121.9    (m)          400.     (f) VERT ANG       
 JV1262
 JV1262.Superseded values are not recommended for survey control.
 JV1262
 JV1262.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1262.See file dsdata.pdf to determine how the superseded data were derived.
 JV1262
 JV1262_MARKER: DS = TRIANGULATION STATION DISK
 JV1262_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1262_STAMPING: FAIR 2 1970
 JV1262_MARK LOGO: CGS
 JV1262_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1262+STABILITY: SURFACE MOTION
 JV1262_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1262+SATELLITE: SATELLITE OBSERVATIONS - October 25, 2022
 JV1262
 JV1262  HISTORY     - Date     Condition        Report By
 JV1262  HISTORY     - 1970     MONUMENTED       NGS
 JV1262  HISTORY     - 1970     GOOD             NGS
 JV1262  HISTORY     - 1976     GOOD             NGS
 JV1262  HISTORY     - 20221025 GOOD             STUBY
 JV1262
 JV1262                          STATION DESCRIPTION
 JV1262
 JV1262'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (LFS)
 JV1262'STATION IS LOCATED ALONG THE EAST SIDE OF I-83 HIGHWAY ABOUT 1.2
 JV1262'MILES NORTHWEST OF TIMONIUM.  IT IS 47.5 FEET NORTHEAST OF THE
 JV1262'EAST EDGE OF THE OUTSIDE TRAFFIC LANE OF NORTH BOUND TRAFFIC, 50
 JV1262'FEET SOUTH-SOUTHWEST OF A 16-INCH LOCUST TREE, LARGEST TREE IN ROW
 JV1262'OF LOCUST TREES, 2.5 FT WEST OF EAST RIGHT-OF-WAY FENCE OF I-83,
 JV1262'AND 2.0 FEET WEST OF A METAL WITNESS POST AND SIGN.  IT IS SET
 JV1262'FLUSH WITH SURFACE OF GROUND AND THE DISK IS STAMPED FAIR 2
 JV1262'1973.
 JV1262'
 JV1262'REFERENCE MARK NO. 3 IS SET FLUSH WITH GROUND SURFACE AT THE
 JV1262'EAST EDGE OF RIGHT-OF-WAY PROPERTY.  49.0 FEET NORTHEAST OF THE
 JV1262'EAST EDGE OF THE OUTSIDE LANE OF NORTH BOUND TRAFFIC OF I-83,
 JV1262'19.5 FEET NORTHWEST OF THE MOST WESTERLY LOCUST TREE IN A ROW OF
 JV1262'LOCUST TREES, AND 1.9 FEET WEST OF A METAL WITNESS POST AND
 JV1262'SIGN.  IT IS STAMPED FAIR 2 NO 3 1970.
 JV1262'
 JV1262'REFERENCE MARK NO. 4 IS SET FLUSH WITH THE GROUND SURFACE AT
 JV1262'THE EAST EDGE OF RIGHT-OF-WAY PROPERTY OF I-83.  58.0 FEET
 JV1262'SOUTH-SOUTHWEST OF A 16-INCH LOCUST TREE, LARGEST IN ROW OF LOCUST
 JV1262'TREES, 48.5 FEET EAST NORTHEAST OF THE EAST EDGE OF NORTH BOUND
 JV1262'TRAFFIC LANES OF I-83, 15.0 FEET SOUTH -SOUTHEAST OF A METAL
 JV1262'WITNESS POST AND SIGN, AND 1.0 FOOT WEST OF EDGE OF HIGHWAY
 JV1262'RIGHT-OF-WAY.  IT IS STAMPED FAIR 2 NO 4 1970.
 JV1262'
 JV1262'REFERENCE MARK NO. 2 IS SET FLUSH WITH THE GROUND IN THE MEDIAN
 JV1262'STRIP OF HIGHWAY I-83.  18.0 FEET WEST OF THE INSIDE EDGE OF THE
 JV1262'NORTH BOUND TRAFFIC LANES, 8.5 FEET EAST OF A DITCH, AND 19 FEET
 JV1262'SOUTHEAST OF A SMALL TREE.  THE DISK IS STAMPED FAIR NO 2 1959.
 JV1262'NO MEASUREMENTS BETWEEN THIS MARK AND THE STATION WERE TAKEN DUE
 JV1262'TO HEAVY CROSS TRAFFIC.
 JV1262'
 JV1262'NO AZIMUTH MARK WAS SET BUT STATION LINE 1959 IS V.G.
 JV1262'
 JV1262'TO REACH FROM THE INTERSECTION OF HIGHWAYS I-83, NORTH, AND
 JV1262'I-695, BALTIMORE BELTWAY, NORTH OF BALTIMORE.  GO NORTH ON I-83
 JV1262'HIGHWAY FOR 2.15 MILES TO THE NORTH END OF A LONG CURVE TO LEFT IN
 JV1262'HIGHWAY AND STATION MARK ON THE RIGHT, JUST SOUTH OF A LOW CUT IN
 JV1262'HIGHWAY RIGHT-OF-WAY.
 JV1262
 JV1262                          STATION RECOVERY (1970)
 JV1262
 JV1262'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 JV1262'1.2 MI NW FROM TIMONIUM.
 JV1262'2.2 MILES NORTH ALONG I-83 HIGHWAY FROM THE JUNCTION OF THE
 JV1262'BALTIMORE BELTWAY, I-695, IN THE VICINITY OF LUTHERVILLE, 47.4
 JV1262'FEET NORTHEAST OF THE EAST EDGE OF THE OUTSIDE TRAFFIC LANE OF
 JV1262'NORTH BOUND TRAFFIC OF I-83, 50.0 FEET SOUTH-SOUTHWEST OF A 16-INCH
 JV1262'LOCUST TREE, LARGEST TREE IN A ROW OF TREES, 2.5 FEET WEST OF THE
 JV1262'EAST RIGHT-OF-WAY FENCE, AND 2.0 FEET WEST OF A METAL WITNESS SIGN
 JV1262'AND POST.  SET IN A CONCRETE POST LEVEL WITH SURFACE OF GROUND
 JV1262'AND ABOUT 6-INCHES ABOVE LEVEL OF HIGHWAY.
 JV1262
 JV1262                          STATION RECOVERY (1976)
 JV1262
 JV1262'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JV1262'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV1262'CONDITION AS PREVIOUSLY DESCRIBED.
 JV1262'
 JV1262'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV1262'1-1/4 MILES NORTHWEST OF TIMONIUM.
 JV1262
 JV1262                          STATION RECOVERY (2022)
 JV1262
 JV1262'RECOVERY NOTE BY STUBY SUBSURFACE INVESTIGATIONS, LLC 2022 (JS)
 JV1262'WITNESS POST STILL STANDING NEXT TO FENCE ALONG EAST SIDE OF
 JV1262'INTERSTATE 83 SOUTH OF PADONIA ROAD EXIT AND NORTH OF TIMONIUM ROAD
 JV1262'EXIT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1263 ***********************************************************************
 JV1263  DESIGNATION -  FAIR 2 RM 3
 JV1263  PID         -  JV1263
 JV1263  STATE/COUNTY-  MD/BALTIMORE
 JV1263  COUNTRY     -  US
 JV1263  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1263
 JV1263                         *CURRENT SURVEY CONTROL
 JV1263  ______________________________________________________________________
 JV1263* NAD 83(1986) POSITION- 39 27 00.68   (N) 076 38 18.16   (W)   HD_HELD1
 JV1263* NAVD 88 ORTHO HEIGHT -   122.11  (meters)      400.6   (feet) RESET
 JV1263  ______________________________________________________________________
 JV1263  GEOID HEIGHT    -        -32.429 (meters)                     GEOID18
 JV1263  VERT ORDER      -  THIRD
 JV1263
 JV1263.The horizontal coordinates were determined by differentially corrected
 JV1263.hand held GPS observations or other comparable positioning techniques
 JV1263.and have an estimated accuracy of +/- 3 meters.
 JV1263
 JV1263.The orthometric height was computed from unverified reset data.
 JV1263
 JV1263.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1263.GEOID18 height accuracy estimate available here.
 JV1263
 JV1263.Click photographs - Photos may exist for this station.
 JV1263
 JV1263;                    North         East    Units  Estimated Accuracy
 JV1263;SPC MD       -   198,046.3     431,126.5     MT  (+/- 3 meters HH1 GPS) 
 JV1263
 JV1263_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5902968017(NAD 83)
 JV1263
 JV1263                          SUPERSEDED SURVEY CONTROL
 JV1263
 JV1263  NGVD 29 (??/??/??)  122.32   (m)          401.3    (f) RESET       3  
 JV1263
 JV1263.Superseded values are not recommended for survey control.
 JV1263
 JV1263.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1263.See file dsdata.pdf to determine how the superseded data were derived.
 JV1263
 JV1263_MARKER: DR = REFERENCE MARK DISK
 JV1263_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1263_STAMPING: FAIR 2 NO 3 1970
 JV1263_MARK LOGO: CGS
 JV1263_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1263+STABILITY: SURFACE MOTION
 JV1263
 JV1263  HISTORY     - Date     Condition        Report By
 JV1263  HISTORY     - 1970     MONUMENTED       NGS
 JV1263
 JV1263                          STATION DESCRIPTION
 JV1263
 JV1263'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970
 JV1263'1.2 MI NW FROM TIMONIUM.
 JV1263'2.2 MILES NORTH ALONG I-83 HIGHWAY FROM THE JUNCTION OF THE
 JV1263'BALTIMORE BELTWAY, I-695, IN THE VICINITY OF LUTHERVILLE, 49.0
 JV1263'FEET NORTHEAST OF THE EAST EDGE OF THE OUTSIDE LANE OF NORTH
 JV1263'BOUND TRAFFIC, 19.5 FEET NORTHWEST OF THE MOST WESTERLY LOCUST
 JV1263'TREE IN A ROW OF LOCUST TREES, AND 1.9 FEET WEST OF A METAL
 JV1263'WITNESS POST AND SIGN.  SET IN A CONCRETE MONUMENT LEVEL WITH
 JV1263'SURFACE OF GROUND AND ABOUT 3 FEET ABOVE LEVEL OF HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1264 ***********************************************************************
 JV1264  DESIGNATION -  FAIR 2 RM 4
 JV1264  PID         -  JV1264
 JV1264  STATE/COUNTY-  MD/BALTIMORE
 JV1264  COUNTRY     -  US
 JV1264  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1264
 JV1264                         *CURRENT SURVEY CONTROL
 JV1264  ______________________________________________________________________
 JV1264* NAD 83(1986) POSITION- 39 27 00.14   (N) 076 38 17.53   (W)   HD_HELD1
 JV1264* NAVD 88 ORTHO HEIGHT -   121.64  (meters)      399.1   (feet) RESET
 JV1264  ______________________________________________________________________
 JV1264  GEOID HEIGHT    -        -32.430 (meters)                     GEOID18
 JV1264  VERT ORDER      -  THIRD
 JV1264
 JV1264.The horizontal coordinates were determined by differentially corrected
 JV1264.hand held GPS observations or other comparable positioning techniques
 JV1264.and have an estimated accuracy of +/- 3 meters.
 JV1264
 JV1264.The orthometric height was computed from unverified reset data.
 JV1264
 JV1264.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1264.GEOID18 height accuracy estimate available here.
 JV1264
 JV1264.Click photographs - Photos may exist for this station.
 JV1264
 JV1264;                    North         East    Units  Estimated Accuracy
 JV1264;SPC MD       -   198,029.7     431,141.6     MT  (+/- 3 meters HH1 GPS) 
 JV1264
 JV1264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5904468000(NAD 83)
 JV1264
 JV1264                          SUPERSEDED SURVEY CONTROL
 JV1264
 JV1264  NGVD 29 (??/??/??)  121.85   (m)          399.8    (f) RESET       3  
 JV1264
 JV1264.Superseded values are not recommended for survey control.
 JV1264
 JV1264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1264.See file dsdata.pdf to determine how the superseded data were derived.
 JV1264
 JV1264_MARKER: DR = REFERENCE MARK DISK
 JV1264_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1264_STAMPING: FAIR 2 NO 4 1970
 JV1264_MARK LOGO: CGS
 JV1264_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1264+STABILITY: SURFACE MOTION
 JV1264
 JV1264  HISTORY     - Date     Condition        Report By
 JV1264  HISTORY     - 1970     MONUMENTED       NGS
 JV1264
 JV1264                          STATION DESCRIPTION
 JV1264
 JV1264'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970
 JV1264'1.2 MI NW FROM TIMONIUM.
 JV1264'2.2 MILES NORTH ALONG I-83 HIGHWAY FROM THE JUNCTION OF THE
 JV1264'BALTIMORE BELTWAY, I-695, IN THE VICINITY OF LUTHERVILLE, 58.0
 JV1264'FEET SOUTH-SOUTHWEST OF A 16-INCH LOCUST TREE, LARGEST IN A
 JV1264'ROW OF LOCUST TREES, 48.5 FEET EAST-NORTHEAST OF THE EAST EDGE
 JV1264'OF NORTH BOUND TRAFFIC LANES, 15.0 FEET SOUTHEAST OF A METAL
 JV1264'WITNESS POST AND SIGN, AND ABOUT 1.0 FT. WEST OF EDGE OF HIGHWAY
 JV1264'RIGHT-OF-WAY.  SET IN THE TOP OF A CONCRETE MONUMENT FLUSH WITH
 JV1264'SURFACE OF THE GROUND AND ABOUT LEVEL WITH THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6222 ***********************************************************************
 DN6222  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6222  DESIGNATION -  FAIR HILL
 DN6222  PID         -  DN6222
 DN6222  STATE/COUNTY-  MD/CECIL
 DN6222  COUNTRY     -  US
 DN6222  USGS QUAD   -  NEWARK WEST (2016)
 DN6222
 DN6222                         *CURRENT SURVEY CONTROL
 DN6222  ______________________________________________________________________
 DN6222* NAD 83(2011) POSITION- 39 42 52.41002(N) 075 49 20.38930(W)   ADJUSTED
 DN6222* NAD 83(2011) ELLIP HT-    69.047 (meters)        (06/27/12)   ADJUSTED
 DN6222* NAD 83(2011) EPOCH   -  2010.00
 DN6222* NAVD 88 ORTHO HEIGHT -   102.04  (meters)      334.8   (feet) GPS OBS
 DN6222  ______________________________________________________________________
 DN6222  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6222  GEOID HEIGHT    -        -32.975 (meters)                     GEOID03
 DN6222  GEOID HEIGHT    -        -32.994 (meters)                     GEOID18
 DN6222  NAD 83(2011) X  -  1,203,356.477 (meters)                     COMP
 DN6222  NAD 83(2011) Y  - -4,763,424.260 (meters)                     COMP
 DN6222  NAD 83(2011) Z  -  4,053,700.702 (meters)                     COMP
 DN6222  LAPLACE CORR    -          1.07  (seconds)                    DEFLEC18
 DN6222
 DN6222  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6222  Standards:
 DN6222         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6222            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6222  -------------------------------------------------------------------
 DN6222  NETWORK    0.57   1.31           0.25   0.21   0.67     -0.04584125
 DN6222  -------------------------------------------------------------------
 DN6222  Click here for local accuracies and other accuracy information.
 DN6222
 DN6222.The horizontal coordinates were established by GPS observations
 DN6222.and adjusted by the National Geodetic Survey in June 2012.
 DN6222
 DN6222.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6222.been affixed to the stable North American tectonic plate. See 
 DN6222.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6222
 DN6222.The horizontal coordinates are valid at the epoch date displayed above
 DN6222.which is a decimal equivalence of Year/Month/Day.
 DN6222
 DN6222.The orthometric height was determined by GPS observations and a
 DN6222.high-resolution geoid model using precise GPS observation and
 DN6222.processing techniques.
 DN6222
 DN6222.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6222.GEOID18 height accuracy estimate available here.
 DN6222
 DN6222.Click photographs - Photos may exist for this station.
 DN6222
 DN6222.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6222
 DN6222.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6222
 DN6222.The ellipsoidal height was determined by GPS observations
 DN6222.and is referenced to NAD 83.
 DN6222
 DN6222. The following values were computed from the NAD 83(2011) position.
 DN6222
 DN6222;                    North         East     Units Scale Factor Converg.
 DN6222;SPC MD       -   227,988.856   500,986.192   MT  1.00005700   +0 44 20.9
 DN6222;SPC MD       -   747,993.44  1,643,652.20   sFT  1.00005700   +0 44 20.9
 DN6222;UTM  18      - 4,396,399.980   429,514.278   MT  0.99966116   -0 31 31.7
 DN6222
 DN6222!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6222!SPC MD       -   0.99998917  x   1.00005700  =   1.00004617
 DN6222!UTM  18      -   0.99998917  x   0.99966116  =   0.99965033
 DN6222
 DN6222_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2951496399(NAD 83)
 DN6222
 DN6222                          SUPERSEDED SURVEY CONTROL
 DN6222
 DN6222  NAD 83(2007)-  39 42 52.41020(N)    075 49 20.39004(W) AD(2002.00) 1
 DN6222  ELLIP H (02/23/12)   69.073  (m)                       GP(2002.00) 4 1
 DN6222
 DN6222.Superseded values are not recommended for survey control.
 DN6222
 DN6222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6222.See file dsdata.pdf to determine how the superseded data were derived.
 DN6222
 DN6222_MARKER: DD = SURVEY DISK
 DN6222_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6222_STAMPING: FAIR HILL 2008
 DN6222_MARK LOGO: MD-015
 DN6222_PROJECTION: RECESSED 6 CENTIMETERS
 DN6222_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6222_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6222+STABILITY: SURFACE MOTION
 DN6222_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6222+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6222
 DN6222  HISTORY     - Date     Condition        Report By
 DN6222  HISTORY     - 20081204 MONUMENTED       GWS
 DN6222  HISTORY     - 20250916 GOOD             PROFLN
 DN6222
 DN6222                          STATION DESCRIPTION
 DN6222
 DN6222'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6222'THE STATION IS LOCATED ABOUT 2.60 MI (4.2 KM) NORTHEAST OF FAIR HILL
 DN6222'AND 0.50 MI (0.8 KM) SOUTH OF THE MASON-DIXON LINE.
 DN6222'
 DN6222'TO REACH FROM THE JUNCTION OF MD 213 AND MD 273, GO EAST ON MD-273 FOR
 DN6222'2.92 MI (4.7 KM) TO AN INTERSECTION.  TURN LEFT AND GO NORTH ON
 DN6222'APPLETON ROAD FOR 1.17 MI (1.9 KM) TO A SIDE ROAD AND PARKING LOT 3 ON
 DN6222'THE LEFT.  TURN LEFT AND GO WEST ON BLACK BRIDGE ROAD FOR 0.04 MI (0.1
 DN6222'KM) TO THE STATION ON THE RIGHT.
 DN6222'
 DN6222'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6222'CONCRETE MONUMENT ON THE WEST SIDE OF APPLETON ROAD, ON THE NORTH SIDE
 DN6222'OF PARKING LOT 3, 134 FT (40.8 M) NORTHWEST OF THE CENTERLINE OF BLACK
 DN6222'BRIDGE ROAD, 159 FT (48.5 M) SOUTHWEST OF THE CENTERLINE OF APPLETON
 DN6222'ROAD AND 184.7 FT (56.3 M) NORTH-NORTHWEST OF A UTILITY POLE (CONECTIV
 DN6222'40915/42298) ON THE SOUTHEAST SIDE OF THE PARKING LOT.
 DN6222
 DN6222                          STATION RECOVERY (2025)
 DN6222
 DN6222'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6222'THE MARK IS ON THE NORTHERLY SIDE OF A PARKING LOT FOR FAIR HILLS
 DN6222'NATURAL RESOURCES MANAGEMENT AREA, 111 FT (33.8 M) WESTERLY OF A BOARD
 DN6222'FENCE, 24 FT (7.3 M) SOUTHERLY FROM THE SOUTHERLY OF TWO 6X6 POSTS
 DN6222'HOLDING A METAL CROSS BAR AND 8.5 FT (2.6 M) SOUTHERLY FROM THE
 DN6222'SOUTHERLY EDGE OF A WOOD MOUNTING PLATFORM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1260 ***********************************************************************
 JV1260  DESIGNATION -  FAIR RM 1
 JV1260  PID         -  JV1260
 JV1260  STATE/COUNTY-  MD/BALTIMORE
 JV1260  COUNTRY     -  US
 JV1260  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1260
 JV1260                         *CURRENT SURVEY CONTROL
 JV1260  ______________________________________________________________________
 JV1260* NAD 83(1986) POSITION- 39 26 59.98   (N) 076 38 17.83   (W)   HD_HELD1
 JV1260* NAVD 88 ORTHO HEIGHT -   121.849 (meters)      399.77  (feet) ADJUSTED
 JV1260  ______________________________________________________________________
 JV1260  GEOID HEIGHT    -        -32.429 (meters)                     GEOID18
 JV1260  DYNAMIC HEIGHT  -        121.785 (meters)      399.56  (feet) COMP
 JV1260  MODELED GRAVITY -    980,099.2   (mgal)                       NAVD 88
 JV1260
 JV1260  VERT ORDER      -  SECOND    CLASS 0
 JV1260
 JV1260.The horizontal coordinates were determined by differentially corrected
 JV1260.hand held GPS observations or other comparable positioning techniques
 JV1260.and have an estimated accuracy of +/- 3 meters.
 JV1260
 JV1260.The orthometric height was determined by differential leveling and
 JV1260.adjusted by the NATIONAL GEODETIC SURVEY
 JV1260.in June 1991.
 JV1260
 JV1260.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1260.GEOID18 height accuracy estimate available here.
 JV1260
 JV1260.Click photographs - Photos may exist for this station.
 JV1260
 JV1260.The dynamic height is computed by dividing the NAVD 88
 JV1260.geopotential number by the normal gravity value computed on the
 JV1260.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1260.degrees latitude (g = 980.6199 gals.).
 JV1260
 JV1260.The modeled gravity was interpolated from observed gravity values.
 JV1260
 JV1260;                    North         East    Units  Estimated Accuracy
 JV1260;SPC MD       -   198,024.7     431,134.4     MT  (+/- 3 meters HH1 GPS) 
 JV1260
 JV1260_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5903767995(NAD 83)
 JV1260
 JV1260                          SUPERSEDED SURVEY CONTROL
 JV1260
 JV1260  NGVD 29 (11/26/84)  122.063  (m)          400.47   (f) ADJUSTED    2 0
 JV1260
 JV1260.Superseded values are not recommended for survey control.
 JV1260
 JV1260.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1260.See file dsdata.pdf to determine how the superseded data were derived.
 JV1260
 JV1260_MARKER: DR = REFERENCE MARK DISK
 JV1260_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1260_STAMPING: FAIR NO 1 1959
 JV1260_MARK LOGO: CGS
 JV1260_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1260+STABILITY: SURFACE MOTION
 JV1260
 JV1260  HISTORY     - Date     Condition        Report By
 JV1260  HISTORY     - 1959     MONUMENTED       CGS
 JV1260
 JV1260                          STATION DESCRIPTION
 JV1260
 JV1260'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1260'2.2 MI N FROM LUTHERVILLE.
 JV1260'2.2 MILES NORTH ALONG U.S. HIGHWAY 111 FROM THE JUNCTION OF THE
 JV1260'BALTIMORE BELTWAY IN THE VICINITY OF LUTHERVILLE, 81.2 FEET
 JV1260'SOUTHEAST OF THE STATION, 78 FEET SOUTH OF THE SOUTH ONE OF A ROW
 JV1260'OF WHITE POST, 31 FEET EAST OF THE CENTER LINE OF THE NORTH
 JV1260'BOUND TRAFFIC LANE, SET IN THE TOP OF A CONCRETE POST FLUSH
 JV1260'WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1261 ***********************************************************************
 JV1261  DESIGNATION -  FAIR RM 2
 JV1261  PID         -  JV1261
 JV1261  STATE/COUNTY-  MD/BALTIMORE
 JV1261  COUNTRY     -  US
 JV1261  USGS QUAD   -  COCKEYSVILLE (2016)
 JV1261
 JV1261                         *CURRENT SURVEY CONTROL
 JV1261  ______________________________________________________________________
 JV1261* NAD 83(1986) POSITION- 39 27 00.41   (N) 076 38 19.44   (W)   HD_HELD1
 JV1261* NAVD 88 ORTHO HEIGHT -   121.287 (meters)      397.92  (feet) ADJUSTED
 JV1261  ______________________________________________________________________
 JV1261  GEOID HEIGHT    -        -32.428 (meters)                     GEOID18
 JV1261  DYNAMIC HEIGHT  -        121.223 (meters)      397.71  (feet) COMP
 JV1261  MODELED GRAVITY -    980,099.2   (mgal)                       NAVD 88
 JV1261
 JV1261  VERT ORDER      -  SECOND    CLASS 0
 JV1261
 JV1261.The horizontal coordinates were determined by differentially corrected
 JV1261.hand held GPS observations or other comparable positioning techniques
 JV1261.and have an estimated accuracy of +/- 3 meters.
 JV1261
 JV1261.The orthometric height was determined by differential leveling and
 JV1261.adjusted by the NATIONAL GEODETIC SURVEY
 JV1261.in June 1991.
 JV1261
 JV1261.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1261.GEOID18 height accuracy estimate available here.
 JV1261
 JV1261.Click photographs - Photos may exist for this station.
 JV1261
 JV1261.The dynamic height is computed by dividing the NAVD 88
 JV1261.geopotential number by the normal gravity value computed on the
 JV1261.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1261.degrees latitude (g = 980.6199 gals.).
 JV1261
 JV1261.The modeled gravity was interpolated from observed gravity values.
 JV1261
 JV1261;                    North         East    Units  Estimated Accuracy
 JV1261;SPC MD       -   198,037.8     431,095.9     MT  (+/- 3 meters HH1 GPS) 
 JV1261
 JV1261_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5899868009(NAD 83)
 JV1261
 JV1261                          SUPERSEDED SURVEY CONTROL
 JV1261
 JV1261  NGVD 29 (11/26/84)  121.502  (m)          398.63   (f) ADJUSTED    2 0
 JV1261
 JV1261.Superseded values are not recommended for survey control.
 JV1261
 JV1261.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1261.See file dsdata.pdf to determine how the superseded data were derived.
 JV1261
 JV1261_MARKER: DR = REFERENCE MARK DISK
 JV1261_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1261_STAMPING: FAIR NO 1 1959
 JV1261_MARK LOGO: CGS
 JV1261_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1261+STABILITY: SURFACE MOTION
 JV1261
 JV1261  HISTORY     - Date     Condition        Report By
 JV1261  HISTORY     - 1959     MONUMENTED       CGS
 JV1261
 JV1261                          STATION DESCRIPTION
 JV1261
 JV1261'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1261'2.2 MI N FROM LUTHERVILLE.
 JV1261'2.2 MILES NORTH ALONG U.S. HIGHWAY 111 FROM THE JUNCTION OF THE
 JV1261'BALTIMORE BELTWAY IN THE VICINITY OF LUTHERVILLE, IN THE PARKWAY,
 JV1261'86.4 FEET SOUTHWEST OF THE STATION, 30 FEET WEST OF THE CENTER
 JV1261'LINE OF THE NORTH BOUND LANE, 8 1/2 FEET EAST OF A DITCH IN THE
 JV1261'PARKWAY, 19 FEET SOUTHEAST OF A SMALL TREE, SET IN THE TOP OF A
 JV1261'CONCRETE POST FLUSH WITH THE GROUND AND ABOUT LEVEL WITH THE
 JV1261'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6223 ***********************************************************************
 DN6223  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6223  DESIGNATION -  FAIRFIELD
 DN6223  PID         -  DN6223
 DN6223  STATE/COUNTY-  MD/CECIL
 DN6223  COUNTRY     -  US
 DN6223  USGS QUAD   -  BAY VIEW (2016)
 DN6223
 DN6223                         *CURRENT SURVEY CONTROL
 DN6223  ______________________________________________________________________
 DN6223* NAD 83(2011) POSITION- 39 41 18.51595(N) 075 58 21.55285(W)   ADJUSTED
 DN6223* NAD 83(2011) ELLIP HT-    93.698 (meters)        (06/27/12)   ADJUSTED
 DN6223* NAD 83(2011) EPOCH   -  2010.00
 DN6223* NAVD 88 ORTHO HEIGHT -   126.71  (meters)      415.7   (feet) GPS OBS
 DN6223  ______________________________________________________________________
 DN6223  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6223  GEOID HEIGHT    -        -32.994 (meters)                     GEOID03
 DN6223  GEOID HEIGHT    -        -33.016 (meters)                     GEOID18
 DN6223  NAD 83(2011) X  -  1,191,307.834 (meters)                     COMP
 DN6223  NAD 83(2011) Y  - -4,768,378.109 (meters)                     COMP
 DN6223  NAD 83(2011) Z  -  4,051,488.426 (meters)                     COMP
 DN6223  LAPLACE CORR    -         -0.68  (seconds)                    DEFLEC18
 DN6223
 DN6223  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6223  Standards:
 DN6223         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6223            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6223  -------------------------------------------------------------------
 DN6223  NETWORK    0.46   1.02           0.21   0.16   0.52      0.04271323
 DN6223  -------------------------------------------------------------------
 DN6223  Click here for local accuracies and other accuracy information.
 DN6223
 DN6223.The horizontal coordinates were established by GPS observations
 DN6223.and adjusted by the National Geodetic Survey in June 2012.
 DN6223
 DN6223.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6223.been affixed to the stable North American tectonic plate. See 
 DN6223.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6223
 DN6223.The horizontal coordinates are valid at the epoch date displayed above
 DN6223.which is a decimal equivalence of Year/Month/Day.
 DN6223
 DN6223.The orthometric height was determined by GPS observations and a
 DN6223.high-resolution geoid model using precise GPS observation and
 DN6223.processing techniques.
 DN6223
 DN6223.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6223.GEOID18 height accuracy estimate available here.
 DN6223
 DN6223.Click photographs - Photos may exist for this station.
 DN6223
 DN6223.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6223
 DN6223.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6223
 DN6223.The ellipsoidal height was determined by GPS observations
 DN6223.and is referenced to NAD 83.
 DN6223
 DN6223. The following values were computed from the NAD 83(2011) position.
 DN6223
 DN6223;                    North         East     Units Scale Factor Converg.
 DN6223;SPC MD       -   224,937.383   488,129.021   MT  1.00005043   +0 38 41.3
 DN6223;SPC MD       -   737,982.06  1,601,469.96   sFT  1.00005043   +0 38 41.3
 DN6223;UTM  18      - 4,393,634.215   416,597.778   MT  0.99968564   -0 37 16.3
 DN6223
 DN6223!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6223!SPC MD       -   0.99998530  x   1.00005043  =   1.00003573
 DN6223!UTM  18      -   0.99998530  x   0.99968564  =   0.99967095
 DN6223
 DN6223_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1659793634(NAD 83)
 DN6223
 DN6223                          SUPERSEDED SURVEY CONTROL
 DN6223
 DN6223  NAD 83(2007)-  39 41 18.51619(N)    075 58 21.55361(W) AD(2002.00) 1
 DN6223  ELLIP H (02/23/12)   93.720  (m)                       GP(2002.00) 4 1
 DN6223
 DN6223.Superseded values are not recommended for survey control.
 DN6223
 DN6223.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6223.See file dsdata.pdf to determine how the superseded data were derived.
 DN6223
 DN6223_MARKER: DD = SURVEY DISK
 DN6223_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6223_STAMPING: FAIRFIELD 2008
 DN6223_MARK LOGO: MD-015
 DN6223_PROJECTION: RECESSED 3 CENTIMETERS
 DN6223_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6223_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6223+STABILITY: SURFACE MOTION
 DN6223_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6223+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6223
 DN6223  HISTORY     - Date     Condition        Report By
 DN6223  HISTORY     - 20081204 MONUMENTED       GWS
 DN6223  HISTORY     - 20251008 GOOD             PROFLN
 DN6223
 DN6223                          STATION DESCRIPTION
 DN6223
 DN6223'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6223'THE STATION IS LOCATED 4.8 MI (7.7 KM) EASTERLY OF THE TOWN OF RISING
 DN6223'SUN.
 DN6223'
 DN6223'TO REACH FROM THE JUNCTION OF MD 273 AND MD 272, GO SOUTH ON MD 272
 DN6223'FOR 1.09 MI (1.8 KM) TO THE STATION ON THE LEFT, JUST NORTH OF THE
 DN6223'INTERSECTION OF FAIRFIELD ROAD.
 DN6223'
 DN6223'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6223'CONCRETE MONUMENT, 12.5 FT (3.8 M) EAST OF THE EAST EDGE OF PAVING OF
 DN6223'MD 272, 88.7 FT (27.0 M) NORTH OF THE CENTERLINE OF FAIRFIELD ROAD AND
 DN6223'78.4 FT (23.9 M) WEST OF A UTILITY POLE (CONECTIV 36667/41407).
 DN6223
 DN6223                          STATION RECOVERY (2025)
 DN6223
 DN6223'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6223'THE MARK IS 75 FT (22.9 M) WEST-SOUTHWEST TOWARD THE HIGHWAY FROM THE
 DN6223'WESTERLY LINE EXTENDED OF A WOOD FENCE, 74 FT (22.6 M) WEST-SOUTHWEST
 DN6223'OF THE MAIN WIRE OF POWERLINES, 56 FT (17.1 M) SOUTHERLY OF THE
 DN6223'SOUTHERLY LINE EXTENDED OF THE WOOD FENCE, 50.5 FT (15.4 M) SOUTHERLY
 DN6223'OF A SIGN - BEGIN R TURN LANE - ON THE TOP OF THE BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7198 ***********************************************************************
 HV7198  DESIGNATION -  FAIRHAVEN 2
 HV7198  PID         -  HV7198
 HV7198  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7198  COUNTRY     -  US
 HV7198  USGS QUAD   -  DEALE (2016)
 HV7198
 HV7198                         *CURRENT SURVEY CONTROL
 HV7198  ______________________________________________________________________
 HV7198* NAD 83(1991) POSITION- 38 45 16.25472(N) 076 33 53.43491(W)   ADJUSTED
 HV7198* NAVD 88 ORTHO HEIGHT -    43.    (meters)      141.    (feet) SCALED
 HV7198  ______________________________________________________________________
 HV7198  GEOID HEIGHT    -        -33.519 (meters)                     GEOID18
 HV7198  LAPLACE CORR    -         -4.16  (seconds)                    DEFLEC18
 HV7198  HORZ ORDER      -  FIRST
 HV7198
 HV7198.The horizontal coordinates were established by classical geodetic methods
 HV7198.and adjusted by the National Geodetic Survey in January 1992.
 HV7198
 HV7198.The orthometric height was scaled from a topographic map.
 HV7198
 HV7198.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7198.GEOID18 height accuracy estimate available here.
 HV7198
 HV7198.Click photographs - Photos may exist for this station.
 HV7198
 HV7198.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7198
 HV7198. The following values were computed from the NAD 83(1991) position.
 HV7198
 HV7198;                    North         East     Units Scale Factor Converg.
 HV7198;SPC MD       -   120,845.666   437,824.037   MT  0.99995208   +0 16 23.2
 HV7198;SPC MD       -   396,474.49  1,436,427.69   sFT  0.99995208   +0 16 23.2
 HV7198;UTM  18      - 4,290,697.952   364,026.827   MT  0.99982767   -0 58 47.0
 HV7198
 HV7198!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7198!SPC MD       -   0.99999855  x   0.99995208  =   0.99995063
 HV7198!UTM  18      -   0.99999855  x   0.99982767  =   0.99982622
 HV7198
 HV7198:                Primary Azimuth Mark                     Grid Az
 HV7198:SPC MD       -  SHARPS ISLAND LIGHTHOUSE                 127 34 33.6
 HV7198:UTM  18      -  SHARPS ISLAND LIGHTHOUSE                 128 49 43.8
 HV7198
 HV7198_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6402690697(NAD 83)
 HV7198
 HV7198|---------------------------------------------------------------------|
 HV7198| PID    Reference Object                     Distance      Geod. Az  |
 HV7198|                                                           dddmmss.s |
 HV7198| CX2747 FAIRHAVEN 2 RM                        6.080 METERS 01918     |
 HV7198| HV6155 TOLSON                              APPROX.22.3 KM 0503556.6 |
 HV7198| HV6143 BEACON 1                            APPROX. 6.1 KM 1094807.0 |
 HV7198| HV6142 SHARPS ISLAND LIGHTHOUSE            APPROX.20.9 KM 1275056.8 |
 HV7198| CX2749 FAIRHAVEN 2 RM 2                     14.065 METERS 23931     |
 HV7198| CX2748 FAIRHAVEN 2 RM 1                     19.041 METERS 31252     |
 HV7198|---------------------------------------------------------------------|
 HV7198
 HV7198                          SUPERSEDED SURVEY CONTROL
 HV7198
 HV7198  NAD 83(1986)-  38 45 16.25249(N)    076 33 53.44744(W) AD(       ) 1
 HV7198  NAD 27      -  38 45 15.83000(N)    076 33 54.60500(W) AD(       ) 1
 HV7198  USSD        -  38 45 16.19700(N)    076 33 54.41500(W) AD(       ) 3
 HV7198
 HV7198.Superseded values are not recommended for survey control.
 HV7198
 HV7198.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7198.See file dsdata.pdf to determine how the superseded data were derived.
 HV7198
 HV7198
 HV7198  HISTORY     - Date     Condition        Report By
 HV7198  HISTORY     - 1898     MONUMENTED       CGS
 HV7198  HISTORY     - 1906     GOOD             CGS
 HV7198  HISTORY     - 1934     GOOD             CGS
 HV7198  HISTORY     - 1943     GOOD             CGS
 HV7198  HISTORY     - 1960     GOOD             CGS
 HV7198
 HV7198                          STATION DESCRIPTION
 HV7198
 HV7198'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 HV7198'STATION IS ON THE WESTERN SIDE OF HERRING BAY, ON PROMINENT BALD
 HV7198'HILL, ABOUT 1/4 MILE BACK FROM SHORE AND 3/4 MILE W BY N OF
 HV7198'FAIRHAVEN WHARF.  ON N SIDE OF ROAD RUNNING FROM FAIRHAVEN HOTEL
 HV7198'TO FRIENDSHIP, AND 44 FEET E OF FENCE RUNNING N 3 DEG E.
 HV7198'
 HV7198'STATION IS MARKED BY 2 4-INCH DRAINTILES SET ONE ABOVE THE OTHER,
 HV7198'TOP OF UPPER ONE BEING ABOUT 8 INCHES BELOW SURFACE OF GROUND, AND
 HV7198'NAIL IN CENTER OF 4-INCH PINE STUB.
 HV7198'
 HV7198'REFERENCE MARK IS MARKED BY HOLE IN CENTER OF TOP OF MARYLAND
 HV7198'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV7198'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES AND IS 6.08
 HV7198'METERS (19.95 FEET) FROM STATION IN BEARING N 19 DEG 18 MIN E.
 HV7198'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER SUNK IN TOP OF POST.
 HV7198'NAIL IN BLAZE ON LONE CHESTNUT TREE (3 FEET IN DIAMETER) IS 20.78
 HV7198'METERS (68.2 FEET) DISTANT IN BEARING N 14 DEG 5 MIN E.  OTHER
 HV7198'DISTANCES AND AZIMUTH ARE AS FOLLOWS--POST OF RAIL FENCE, 14.53
 HV7198'METERS (47.7 FEET), S 88 DEG 33 MIN W.  CUPOLA ON FAIRHAVEN HOTEL,
 HV7198'1/2 MILE, N 73 DEG 12 MIN E.  E CHIMNEY OF YELLOW HOUSE, 1/2 MILE,
 HV7198'N 78 DEG 34 MIN E.  W PEAK OF FAIRHAVEN WHARF HOUSE, 1 MILE, S 53
 HV7198'DEG 43 MIN E.  CHIMNEY OF SMALL HOUSE CLOSE TO SHORE, 1/2 MILE, S
 HV7198'39 DEG 7 MIN E.
 HV7198
 HV7198                          STATION RECOVERY (1934)
 HV7198
 HV7198'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV7198'THIS SECOND-ORDER STATION IS ON A PROMINENT KNOLL ABOUT 3/4 MILE
 HV7198'FROM SHORE OF HERRING BAY, JUST N OF STATE ROAD TO FAIRHAVEN
 HV7198'WHARF, ON PROPERTY OWNED BY MR. IRVIN OWINGS.  LAND IS NOW UNDER
 HV7198'CULTIVATION.
 HV7198'
 HV7198'STATION MARK IS STANDARD DISK CEMENTED IN A 4-INCH TILE AND IS 2
 HV7198'FEET UNDERGROUND.  MARK IS 13 METERS (43 FEET) E OF A N-S
 HV7198'BARBED-WIRE FENCE AND IS STAMPED FAIRHAVEN 2 1898.
 HV7198'
 HV7198'REFERENCE MARK NO.1, AS DESCRIBED, IS STANDARD BRONZE DISK SET IN
 HV7198'CONCRETE, FLUSH WITH GROUND, STAMPED FAIRHAVEN 2 1933, 19.041
 HV7198'METERS NW OF STATION, IN N-S FENCE.
 HV7198'
 HV7198'REFERENCE MARK NO.2, AS DESCRIBED, IS STANDARD BRONZE DISK SET IN
 HV7198'CONCRETE, FLUSH WITH GROUND, STAMPED FAIRHAVEN 2 1933, 14.065
 HV7198'METERS SSW OF STATION, IN N-S FENCE LINE.
 HV7198'
 HV7198'REACHED BY GOING S FROM ANNAPOLIS ON STATE HIGHWAY 2, 16 MILES, OR
 HV7198'E FROM UPPER MARLBORO 8 MILES ON STATE HIGHWAY 4, TO MOUNT ZOIN,
 HV7198'THEN GO 6.3 MILES ON SOLOMONS ISLAND, TURN LEFT ON HARD-SURFACED
 HV7198'ROAD TOWARDS FAIRHAVEN AND GO 1.3 MILES TO STATION.
 HV7198'
 HV7198'A 37-FOOT TOWER USED.
 HV7198'
 HV7198'SECOND-ORDER-16 POSITIONS.
 HV7198
 HV7198                          STATION RECOVERY (1943)
 HV7198
 HV7198'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7198'RECOVERED AS DESCRIBED.  DESCRIPTION ADEQUATE EXCEPT FOR THE
 HV7198'FOLLOWING DISCREPANCY--
 HV7198'
 HV7198'THE ANGLE 209 DEG 06 MIN 57 SEC WAS TURNED TO THE MOST SOUTHERLY
 HV7198'CHIMNEY ON TWO-STORY HOUSE, NOT THE MOST NORTHERLY.
 HV7198
 HV7198                          STATION RECOVERY (1960)
 HV7198
 HV7198'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7198'STATION AND REFERENCE MARKS WERE FOUND AS DESCRIBED AND IN GOOD
 HV7198'CONDITION.  DISTANCE TO R.M. NO.1, 1933 WAS MEASURED AND FOUND TO
 HV7198'BE 62.46 FEET.  DISTANCE TO R.M. NO.2, 1933 WAS MEASURED AND
 HV7198'FOUND TO BE 46.34 FEET.
 HV7198'
 HV7198'FOUR POSITIONS WITH A WILD T-2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5954 ***********************************************************************
 JV5954  DESIGNATION -  FAIRLAND
 JV5954  PID         -  JV5954
 JV5954  STATE/COUNTY-  MD/MONTGOMERY
 JV5954  COUNTRY     -  US
 JV5954  USGS QUAD   -  BELTSVILLE (2016)
 JV5954
 JV5954                         *CURRENT SURVEY CONTROL
 JV5954  ______________________________________________________________________
 JV5954* NAD 83(1991) POSITION- 39 04 51.16330(N) 076 57 34.47865(W)   ADJUSTED
 JV5954* NAVD 88 ORTHO HEIGHT -   140.1   (meters)      460.    (feet) VERTCON3
 JV5954  ______________________________________________________________________
 JV5954  GEOID HEIGHT    -        -32.034 (meters)                     GEOID18
 JV5954  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 JV5954  HORZ ORDER      -  SECOND
 JV5954
 JV5954.The horizontal coordinates were established by classical geodetic methods
 JV5954.and adjusted by the National Geodetic Survey in January 1992.
 JV5954
 JV5954.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5954.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5954
 JV5954.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5954.GEOID18 height accuracy estimate available here.
 JV5954
 JV5954.Click photographs - Photos may exist for this station.
 JV5954
 JV5954.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5954
 JV5954. The following values were computed from the NAD 83(1991) position.
 JV5954
 JV5954;                    North         East     Units Scale Factor Converg.
 JV5954;SPC MD       -   156,985.419   403,497.521   MT  0.99995623   +0 01 31.3
 JV5954;SPC MD       -   515,043.00  1,323,808.12   sFT  0.99995623   +0 01 31.3
 JV5954;UTM  18      - 4,327,579.491   330,503.249   MT  0.99995376   -1 14 08.3
 JV5954
 JV5954!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5954!SPC MD       -   0.99998305  x   0.99995623  =   0.99993928
 JV5954!UTM  18      -   0.99998305  x   0.99995376  =   0.99993681
 JV5954
 JV5954:                Primary Azimuth Mark                     Grid Az
 JV5954:SPC MD       -  CASTLE                                   069 28 36.0
 JV5954:UTM  18      -  CASTLE                                   070 44 15.6
 JV5954
 JV5954_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3050327579(NAD 83)
 JV5954
 JV5954|---------------------------------------------------------------------|
 JV5954| PID    Reference Object                     Distance      Geod. Az  |
 JV5954|                                                           dddmmss.s |
 JV5954| CA9402 FAIRLAND AZ MK                                     0473752.1 |
 JV5954| JV5957 CASTLE                              APPROX. 1.6 KM 0693007.3 |
 JV5954| CA9403 FAIRLAND RM 1                        23.000 METERS 07557     |
 JV5954| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 9.4 KM 2413734.4 |
 JV5954| CA9404 FAIRLAND RM 2                        21.939 METERS 24654     |
 JV5954|---------------------------------------------------------------------|
 JV5954
 JV5954                          SUPERSEDED SURVEY CONTROL
 JV5954
 JV5954  NAD 83(1986)-  39 04 51.16249(N)    076 57 34.48876(W) AD(       ) 2
 JV5954  NAD 27      -  39 04 50.77143(N)    076 57 35.57722(W) AD(       ) 2
 JV5954  NGVD 29 (07/19/86)  140.3    (m)          460.     (f) VERT ANG       
 JV5954
 JV5954.Superseded values are not recommended for survey control.
 JV5954
 JV5954.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5954.See file dsdata.pdf to determine how the superseded data were derived.
 JV5954
 JV5954_MARKER: DS = TRIANGULATION STATION DISK
 JV5954_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5954_STAMPING: FAIRLAND 1957
 JV5954_MARK LOGO: CGS
 JV5954_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5954+STABILITY: SURFACE MOTION
 JV5954
 JV5954  HISTORY     - Date     Condition        Report By
 JV5954  HISTORY     - 1957     MONUMENTED       CGS
 JV5954  HISTORY     - 1970     GOOD             NGS
 JV5954
 JV5954                          STATION DESCRIPTION
 JV5954
 JV5954'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5954'STATION IS LOCATED ABOUT 2-1/2 MILES SOUTHWEST OF BURTONSVILLE AND
 JV5954'ABOUT 0.1 MILE WEST OF COLUMBIA ROAD ALONG A TRACK ROAD.  STATION IS
 JV5954'19 FEET SOUTH OF ROW OF PEACH TREES AND 13 FEET NORTH OF A HEDGE.
 JV5954'THE MARK IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED FAIRLAND
 JV5954'1957.
 JV5954'
 JV5954'REFERENCE MARK NO. 1 IS 15 FEET SOUTH OF THE APPROXIMATE CENTER OF
 JV5954'TRACK ROAD AND 3 FEET NORTH OF HEDGE.  THE MARK PROJECTS ABOUT 4
 JV5954'INCHES AND THE DISK IS STAMPED FAIRLAND NO 1 1957.
 JV5954'
 JV5954'REFERENCE MARK NO. 2 IS 10 FEET SOUTH OF THE APPROXIMATE CENTER
 JV5954'OF TRACK ROAD AND IN THE NORTH EDGE OF HEDGE.  THE MARK PROJECTS
 JV5954'ABOUT 6 INCHES AND THE DISK IS STAMPED FAIRLAND NO 2 1957.
 JV5954'
 JV5954'AZIMUTH MARK IS 14 FEET SOUTH OF THE APPROXIMATE CENTER OF BLACKTOP
 JV5954'ROAD, 2 FEET WEST OF WITNESS POST AND DIRECTLY UNDER TELEPHONE
 JV5954'CABLE.  THE MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED
 JV5954'FAIRLAND 1957.
 JV5954'
 JV5954'TO REACH STATION FROM THE FIRE STATION IN BURTONSVILLE GO SOUTHWEST
 JV5954'FOR 0.1 MILE TO THE JUNCTION OF STATE ROUTES 196 AND 198.  KEEP LEFT
 JV5954'FORK ON STATE ROUTE 196 FOR 2.2 MILES TO SHERVIEW LANE ON THE
 JV5954'RIGHT.  TURN RIGHT AND GO 0.25 MILE TO FENCE CORNER IN THE YARD
 JV5954'OF MR. CARSON KIRK.  TURN LEFT THROUGH BOARD GATE AND GO 0.05
 JV5954'MILE TO ANOTHER GATE.  TURN RIGHT THROUGH BOARD GATE AND GO 0.05
 JV5954'MILE TO STATION ALONG TRACK ROAD AS DESCRIBED.  TO REACH
 JV5954'AZIMUTH MARK RETURN TO THE INTERSECTION OF STATE ROUTE 196 AND
 JV5954'SHERVIEW LANE.  TURN LEFT AND GO NORTH ON STATE ROUTE 196 FOR 0.4
 JV5954'MILE TO BRIGGS-CHANEY ROAD LEFT.  TURN LEFT AND GO WEST FOR
 JV5954'0.1 MILE TO THE AZIMUTH MARK ON THE LEFT AS DESCRIBED.
 JV5954'
 JV5954'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5954
 JV5954                          STATION RECOVERY (1970)
 JV5954
 JV5954'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5954'RM 1 TO RM 2 OBSTRUCTED.
 JV5954'
 JV5954'THE STATION MARK AND REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 JV5954'CONDITION AS DESCRIBED BY J.C. ELLERBE IN 1966.  THE AZIMUTH MARK
 JV5954'WAS DESTROYED.  TRIANGULATION STATION CASTLE WILL SERVE AS AN
 JV5954'AZIMUTH MARK.
 JV5954'
 JV5954'A GEODIMETER TRAVERSE TIE WAS MADE TO TRIANGULATION STATION CASTLE
 JV5954'THE DISTANCE BEING 1614.232 METERS NORTHEAST.
 JV5954'
 JV5954'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2-1/2 MILES
 JV5954'SOUTHWEST OF BURTONSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9402 ***********************************************************************
 DR9402  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9402  DESIGNATION -  FAIRLEE
 DR9402  PID         -  DR9402
 DR9402  STATE/COUNTY-  MD/KENT
 DR9402  COUNTRY     -  US
 DR9402  USGS QUAD   -  ROCK HALL (2016)
 DR9402
 DR9402                         *CURRENT SURVEY CONTROL
 DR9402  ______________________________________________________________________
 DR9402* NAD 83(2011) POSITION- 39 12 46.60860(N) 076 10 30.35485(W)   ADJUSTED
 DR9402* NAD 83(2011) ELLIP HT-    -9.639 (meters)        (09/18/23)   ADJUSTED
 DR9402* NAD 83(2011) EPOCH   -  2010.00
 DR9402* NAVD 88 ORTHO HEIGHT -    23.65  (meters)       77.6   (feet) GPS OBS
 DR9402  ______________________________________________________________________
 DR9402  GEOID HEIGHT    -        -33.299 (meters)                     GEOID18
 DR9402  NAD 83(2011) X  -  1,182,449.341 (meters)                     COMP
 DR9402  NAD 83(2011) Y  - -4,805,055.292 (meters)                     COMP
 DR9402  NAD 83(2011) Z  -  4,010,655.613 (meters)                     COMP
 DR9402  LAPLACE CORR    -         -2.26  (seconds)                    DEFLEC18
 DR9402
 DR9402  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9402  Standards:
 DR9402         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9402            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9402  -------------------------------------------------------------------
 DR9402  NETWORK    0.66   1.47           0.29   0.25   0.75     -0.08989594
 DR9402  -------------------------------------------------------------------
 DR9402  Click here for local accuracies and other accuracy information.
 DR9402
 DR9402.The horizontal coordinates were established by GPS observations
 DR9402.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9402
 DR9402.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9402.been affixed to the stable North American tectonic plate. See 
 DR9402.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9402
 DR9402.The horizontal coordinates are valid at the epoch date displayed above
 DR9402.which is a decimal equivalence of Year/Month/Day.
 DR9402
 DR9402.The orthometric height was determined by GPS observations and a
 DR9402.high-resolution geoid model using precise GPS observation and
 DR9402.processing techniques.
 DR9402
 DR9402.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9402.GEOID18 height accuracy estimate available here.
 DR9402
 DR9402.Click photographs - Photos may exist for this station.
 DR9402
 DR9402.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9402
 DR9402.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9402
 DR9402.The ellipsoidal height was determined by GPS observations
 DR9402.and is referenced to NAD 83.
 DR9402
 DR9402. The following values were computed from the NAD 83(2011) position.
 DR9402
 DR9402;                    North         East     Units Scale Factor Converg.
 DR9402;SPC MD       -   171,967.928   471,240.244   MT  0.99996712   +0 31 03.9
 DR9402;SPC MD       -   564,198.11  1,546,060.70   sFT  0.99996712   +0 31 03.9
 DR9402;UTM  18      - 4,341,065.708   398,550.419   MT  0.99972672   -0 44 34.7
 DR9402
 DR9402!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9402!SPC MD       -   1.00000151  x   0.99996712  =   0.99996863
 DR9402!UTM  18      -   1.00000151  x   0.99972672  =   0.99972823
 DR9402
 DR9402_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9855041065(NAD 83)
 DR9402
 DR9402                          SUPERSEDED SURVEY CONTROL
 DR9402
 DR9402.No superseded survey control is available for this station.
 DR9402
 DR9402_MARKER: DD = SURVEY DISK
 DR9402_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9402_STAMPING: FAIRLEE 2021
 DR9402_MARK LOGO: MD-029
 DR9402_PROJECTION: FLUSH
 DR9402_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9402_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9402+STABILITY: SURFACE MOTION
 DR9402_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9402+SATELLITE: SATELLITE OBSERVATIONS - December 16, 2021
 DR9402
 DR9402  HISTORY     - Date     Condition        Report By
 DR9402  HISTORY     - 20211216 MONUMENTED       MDSHA
 DR9402
 DR9402                          STATION DESCRIPTION
 DR9402
 DR9402'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9402'THE MARK IS LOCATED ABOUT 5.8 MI (9.3 KM) WEST OF CHESTERTOWN, IN THE
 DR9402'TOWN OF, MD, 4.7 MI (7.6 KM) SOUTH-SOUTHWEST OF HANESVILLE AND IN THE
 DR9402'TOWN OF FAIRLEE, MD.
 DR9402'
 DR9402'TO REACH THE MARK FROM THE JUNCTION OF MD 297 AND MD 298, GO SOUTHWEST
 DR9402'ON MD 298 FOR 7.33 MI (11.79 KM) TO THE MARK ON THE LEFT. MARK IS IN
 DR9402'THE GRASS ISLAND BETWEEN MD 298 AND MD 20.
 DR9402'
 DR9402'THE MARK IS 107.6 FT (32.8 M) WEST-SOUTHWEST OF A MANHOLE LOCATED IN A
 DR9402'INLET, 54.5 FT (16.6 M) EAST OF FIBER OPTIC BOX FLUSH WITH THE GROUND,
 DR9402'52.7 FT (16.1 M) NORTHWEST OF THE CENTERLINE OF STATE ROUTE 20, 46.7
 DR9402'FT (14.2 M) NORTH-NORTHEAST OF A UTILITY POLE NUMBERED
 DR9402'30749-24161/VZ270, 16.4 FT (5.0 M) EAST-SOUTHEAST OF THE CENTERLINE OF
 DR9402'A RAMP FROM MD 20 TO MD 298 NORTH SET IN THE TOP OF A 12-IN (30 CM)
 DR9402'ROUND CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5108 ***********************************************************************
 JV5108  DESIGNATION -  FAIRLEE ATT RELAY TOWER
 JV5108  PID         -  JV5108
 JV5108  STATE/COUNTY-  MD/KENT
 JV5108  COUNTRY     -  US
 JV5108  USGS QUAD   -  ROCK HALL (2016)
 JV5108
 JV5108                         *CURRENT SURVEY CONTROL
 JV5108  ______________________________________________________________________
 JV5108* NAD 83(1991) POSITION- 39 12 39.57960(N) 076 10 34.18480(W)   ADJUSTED
 JV5108  ______________________________________________________________________
 JV5108  GEOID HEIGHT    -        -33.300 (meters)                     GEOID18
 JV5108  LAPLACE CORR    -         -2.25  (seconds)                    DEFLEC18
 JV5108  HORZ ORDER      -  THIRD
 JV5108
 JV5108.The horizontal coordinates were established by classical geodetic methods
 JV5108.and adjusted by the National Geodetic Survey in January 1992.
 JV5108
 JV5108.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5108.GEOID18 height accuracy estimate available here.
 JV5108
 JV5108.Click photographs - Photos may exist for this station.
 JV5108
 JV5108.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5108
 JV5108. The following values were computed from the NAD 83(1991) position.
 JV5108
 JV5108;                    North         East     Units Scale Factor Converg.
 JV5108;SPC MD       -   171,750.349   471,150.324   MT  0.99996692   +0 31 01.4
 JV5108;SPC MD       -   563,484.27  1,545,765.69   sFT  0.99996692   +0 31 01.4
 JV5108;UTM  18      - 4,340,850.212   398,455.756   MT  0.99972696   -0 44 37.0
 JV5108
 JV5108_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9845540850(NAD 83)
 JV5108
 JV5108                          SUPERSEDED SURVEY CONTROL
 JV5108
 JV5108  NAD 83(1986)-  39 12 39.57291(N)    076 10 34.19379(W) AD(       ) 3
 JV5108  NAD 27      -  39 12 39.18000(N)    076 10 35.36900(W) AD(       ) 3
 JV5108
 JV5108.Superseded values are not recommended for survey control.
 JV5108
 JV5108.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5108.See file dsdata.pdf to determine how the superseded data were derived.
 JV5108
 JV5108_MARKER: 45 = MICROWAVE TOWER
 JV5108
 JV5108  HISTORY     - Date     Condition        Report By
 JV5108  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5108  HISTORY     - 1964     GOOD             CGS
 JV5108  HISTORY     - 1972     GOOD             NGS
 JV5108
 JV5108                          STATION DESCRIPTION
 JV5108
 JV5108'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5108'THE STATION IS LOCATED ABOUT 6 MI. W OF CHESTERTOWN AND IS ALONG
 JV5108'STATE HIGHWAY 20.  IT IS OF STEEL CONSTRUCTION, PAINTED RED AND
 JV5108'WHITE AND IS 320 FT. HIGH.  THE POINT INTERSECTED WAS THE RED
 JV5108'LIGHT ON THE TOP.
 JV5108'
 JV5108'TO REACH FROM THE POST OFFICE IN CHESTERTOWN, GO NW AND W ON
 JV5108'STATE HIGHWAY 20 FOR 6.8 MI. TO THE STATION ON THE LEFT.
 JV5108'
 JV5108'THIS IS AN INTERSECTION STATION.
 JV5108
 JV5108                          STATION RECOVERY (1964)
 JV5108
 JV5108'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (MJT)
 JV5108'STATION RECOVERED AS DESCRIBED AND IS IN GOOD CONDITION.
 JV5108'
 JV5108'STATION IS 185 FEET SOUTHEAST OF STATE HIGHWAY NO. 20.
 JV5108
 JV5108                          STATION RECOVERY (1972)
 JV5108
 JV5108'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (EH)
 JV5108'THE STATION WAS RECOVERED AS DESCRIBED.  IT STANDS TO THE EAST OF
 JV5108'STATE HIGHWAY 20, ABOUT 0.75 MILES SOUTH OF THE CENTER OF FAIRLEE,
 JV5108'MARYLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9403 ***********************************************************************
 DR9403  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9403  DESIGNATION -  FAIRLEE AZ MK
 DR9403  PID         -  DR9403
 DR9403  STATE/COUNTY-  MD/KENT
 DR9403  COUNTRY     -  US
 DR9403  USGS QUAD   -  ROCK HALL (2016)
 DR9403
 DR9403                         *CURRENT SURVEY CONTROL
 DR9403  ______________________________________________________________________
 DR9403* NAD 83(2011) POSITION- 39 12 52.35771(N) 076 10 28.39784(W)   ADJUSTED
 DR9403* NAD 83(2011) ELLIP HT-    -9.732 (meters)        (09/18/23)   ADJUSTED
 DR9403* NAD 83(2011) EPOCH   -  2010.00
 DR9403* NAVD 88 ORTHO HEIGHT -    23.55  (meters)       77.3   (feet) GPS OBS
 DR9403  ______________________________________________________________________
 DR9403  GEOID HEIGHT    -        -33.298 (meters)                     GEOID18
 DR9403  NAD 83(2011) X  -  1,182,468.129 (meters)                     COMP
 DR9403  NAD 83(2011) Y  - -4,804,935.161 (meters)                     COMP
 DR9403  NAD 83(2011) Z  -  4,010,792.921 (meters)                     COMP
 DR9403  LAPLACE CORR    -         -2.26  (seconds)                    DEFLEC18
 DR9403
 DR9403  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9403  Standards:
 DR9403         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9403            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9403  -------------------------------------------------------------------
 DR9403  NETWORK    0.66   1.45           0.29   0.25   0.74     -0.09649521
 DR9403  -------------------------------------------------------------------
 DR9403  Click here for local accuracies and other accuracy information.
 DR9403
 DR9403.The horizontal coordinates were established by GPS observations
 DR9403.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9403
 DR9403.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9403.been affixed to the stable North American tectonic plate. See 
 DR9403.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9403
 DR9403.The horizontal coordinates are valid at the epoch date displayed above
 DR9403.which is a decimal equivalence of Year/Month/Day.
 DR9403
 DR9403.The orthometric height was determined by GPS observations and a
 DR9403.high-resolution geoid model using precise GPS observation and
 DR9403.processing techniques.
 DR9403
 DR9403.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9403.GEOID18 height accuracy estimate available here.
 DR9403
 DR9403.Click photographs - Photos may exist for this station.
 DR9403
 DR9403.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9403
 DR9403.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9403
 DR9403.The ellipsoidal height was determined by GPS observations
 DR9403.and is referenced to NAD 83.
 DR9403
 DR9403. The following values were computed from the NAD 83(2011) position.
 DR9403
 DR9403;                    North         East     Units Scale Factor Converg.
 DR9403;SPC MD       -   172,145.635   471,285.587   MT  0.99996728   +0 31 05.1
 DR9403;SPC MD       -   564,781.14  1,546,209.46   sFT  0.99996728   +0 31 05.1
 DR9403;UTM  18      - 4,341,242.332   398,599.649   MT  0.99972660   -0 44 33.5
 DR9403
 DR9403!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9403!SPC MD       -   1.00000153  x   0.99996728  =   0.99996881
 DR9403!UTM  18      -   1.00000153  x   0.99972660  =   0.99972813
 DR9403
 DR9403_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9859941242(NAD 83)
 DR9403
 DR9403                          SUPERSEDED SURVEY CONTROL
 DR9403
 DR9403.No superseded survey control is available for this station.
 DR9403
 DR9403_MARKER: DD = SURVEY DISK
 DR9403_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9403_STAMPING: FAIRLEE AZ 2021
 DR9403_MARK LOGO: MD-029
 DR9403_PROJECTION: FLUSH
 DR9403_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9403_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9403+STABILITY: SURFACE MOTION
 DR9403_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9403+SATELLITE: SATELLITE OBSERVATIONS - December 16, 2021
 DR9403
 DR9403  HISTORY     - Date     Condition        Report By
 DR9403  HISTORY     - 20211216 MONUMENTED       MDSHA
 DR9403
 DR9403                          STATION DESCRIPTION
 DR9403
 DR9403'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9403'THE MARK IS LOCATED ABOUT 5.8 MI (9.3 KM) WEST OF CHESTERTOWN, IN THE
 DR9403'TOWN OF, MD, 4.7 MI (7.6 KM) SOUTH-SOUTHWEST OF HANESVILLE AND IN THE
 DR9403'TOWN OF FAIRLEE, MD.
 DR9403'
 DR9403'TO REACH THE MARK FROM THE JUNCTION OF MD 297 AND MD 298, GO SOUTHWEST
 DR9403'ON MD 298 FOR 7.21 MI (11.60 KM) TO THE MARK ON THE LEFT.
 DR9403'
 DR9403'THE MARK IS 67.6 FT (20.6 M) SOUTH-SOUTHEAST OF A TELEPHONE POLE
 DR9403'NUMBERED 30760-24224, 40.5 FT (12.3 M) SOUTHEAST OF THE CENTERLINE OF
 DR9403'A DIRT ENTRANCE FOR 8720 FAIRLEE ROAD, 31.6 FT (9.6 M) NORTH OF A
 DR9403'METAL POST WITH A SPEED LIMIT SIGN, 22.9 FT (7.0 M) EAST-SOUTHEAST OF
 DR9403'THE CENTERLINE OF STATE ROUTE 298 SET IN THE TOP OF A 12-IN (30 CM)
 DR9403'ROUND CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4926 ***********************************************************************
 JV4926  DESIGNATION -  FAIRLEE TOWER 10
 JV4926  PID         -  JV4926
 JV4926  STATE/COUNTY-  MD/KENT
 JV4926  COUNTRY     -  US
 JV4926  USGS QUAD   -  HANESVILLE (2016)
 JV4926
 JV4926                         *CURRENT SURVEY CONTROL
 JV4926  ______________________________________________________________________
 JV4926* NAD 83(1991) POSITION- 39 15 12.76328(N) 076 13 24.86505(W)   ADJUSTED
 JV4926* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV4926  ______________________________________________________________________
 JV4926  GEOID HEIGHT    -        -33.229 (meters)                     GEOID18
 JV4926  LAPLACE CORR    -         -1.75  (seconds)                    DEFLEC18
 JV4926  HORZ ORDER      -  THIRD
 JV4926
 JV4926.The horizontal coordinates were established by classical geodetic methods
 JV4926.and adjusted by the National Geodetic Survey in January 1992.
 JV4926
 JV4926.The orthometric height was scaled from a topographic map.
 JV4926
 JV4926.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4926.GEOID18 height accuracy estimate available here.
 JV4926
 JV4926.Click photographs - Photos may exist for this station.
 JV4926
 JV4926.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4926
 JV4926. The following values were computed from the NAD 83(1991) position.
 JV4926
 JV4926;                    North         East     Units Scale Factor Converg.
 JV4926;SPC MD       -   176,438.154   467,015.606   MT  0.99997153   +0 29 14.3
 JV4926;SPC MD       -   578,864.18  1,532,200.37   sFT  0.99997153   +0 29 14.3
 JV4926;UTM  18      - 4,345,626.751   394,426.170   MT  0.99973723   -0 46 27.4
 JV4926
 JV4926!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4926!SPC MD       -   1.00000400  x   0.99997153  =   0.99997553
 JV4926!UTM  18      -   1.00000400  x   0.99973723  =   0.99974123
 JV4926
 JV4926:                Primary Azimuth Mark                     Grid Az
 JV4926:SPC MD       -  MITCHELL BLUFF TOWER 11 RESET            201 32 47.8
 JV4926:UTM  18      -  MITCHELL BLUFF TOWER 11 RESET            202 48 29.5
 JV4926
 JV4926_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9442645626(NAD 83)
 JV4926
 JV4926|---------------------------------------------------------------------|
 JV4926| PID    Reference Object                     Distance      Geod. Az  |
 JV4926|                                                           dddmmss.s |
 JV4926| CA9405 FAIRLEE TOWER 10 RM                  24.118 METERS 09306     |
 JV4926| JV5133 MITCHELL BLUFF TOWER 11 RESET       APPROX. 3.5 KM 2020202.1 |
 JV4926| JV5101 FERRY BLDG CUPOLA                   APPROX. 4.6 KM 2042837.0 |
 JV4926| JV5102 FERRY WHARF LIGHT                   APPROX. 4.6 KM 2043951.5 |
 JV4926|---------------------------------------------------------------------|
 JV4926
 JV4926                          SUPERSEDED SURVEY CONTROL
 JV4926
 JV4926  NAD 83(1986)-  39 15 12.75697(N)    076 13 24.87374(W) AD(       ) 3
 JV4926  NAD 27      -  39 15 12.36300(N)    076 13 26.04000(W) AD(       ) 3
 JV4926  USSD        -  39 15 12.73100(N)    076 13 25.88200(W) AD(       ) 3
 JV4926
 JV4926.Superseded values are not recommended for survey control.
 JV4926
 JV4926.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4926.See file dsdata.pdf to determine how the superseded data were derived.
 JV4926
 JV4926_MARKER: DS = TRIANGULATION STATION DISK
 JV4926_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4926_MARK LOGO: CGS
 JV4926_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4926+STABILITY: SURFACE MOTION
 JV4926
 JV4926  HISTORY     - Date     Condition        Report By
 JV4926  HISTORY     - 1918     MONUMENTED       CGS
 JV4926  HISTORY     - 1935     GOOD             CGS
 JV4926  HISTORY     - 1939     GOOD             CGS
 JV4926  HISTORY     - 1961     GOOD             CGS
 JV4926  HISTORY     - 1972     GOOD             NGS
 JV4926  HISTORY     - 1974     GOOD             MDDNR
 JV4926
 JV4926                          STATION DESCRIPTION
 JV4926
 JV4926'DESCRIBED BY COAST AND GEODETIC SURVEY 1918 (EDB)
 JV4926'ON THE EASTERN SHORE OF CHESAPEAKE BAY, ABOUT 1 MILE S OF THE
 JV4926'ENTRANCE TO FAIRLEE CREEK AND ABOUT 211 METERS S OF TRIANGULATION
 JV4926'STATION BRAMBLE AND 25 PACES BACK FROM EDGE OF BLUFF.  THE
 JV4926'UNDERGROUND MARK IS A NAIL SET IN CONCRETE.
 JV4926'THE STATION MARK IS A BRONZE TABLET SET IN A CONCRETE POST
 JV4926'THE REFERENCE MARK IS A BRONZE TABLET
 JV4926'SET IN A CONCRETE POST.  IT IS 24.118
 JV4926'METERS (79.13 FEET) FROM STATION S 86 DEG 54 MIN E.
 JV4926'OTHER BEARINGS FROM THE STATION ARE AS FOLLOWS--BARN CUPOLA,
 JV4926'S 26 DEG 06 MIN E.  CUPOLA ON END OF TOLCHESTER WHARF, S 24 DEG
 JV4926'28 MIN W.
 JV4926'
 JV4926'A 4-FOOT OBSERVATION TOWER WAS ERECTED OVER THIS STATION.
 JV4926
 JV4926                          STATION RECOVERY (1935)
 JV4926
 JV4926'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (JCP)
 JV4926'STATION AND REFERENCE MARK RECOVERED IN GOOD CONDITION.
 JV4926'
 JV4926'ORIGINAL DESCRIPTION ADEQUATE WITH THE EXCEPTION THAT STATION
 JV4926'BRAMBLE IS LOST.
 JV4926'
 JV4926'STATION MARKED FAIRLEE TOWER NO.10 1918.
 JV4926
 JV4926                          STATION RECOVERY (1939)
 JV4926
 JV4926'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4926'STATION RECOVERED IN GOOD CONDITION.
 JV4926'
 JV4926'STATION IS ON THE EASTERN SHORE OF CHESAPEAKE BAY, ABOUT 1 MILE S
 JV4926'OF THE ENTRANCE TO FAIRLEE CREEK, IN AN OPEN FIELD, 24 METERS E OF
 JV4926'THE TOP OF THE BLUFF AND DIRECTLY UNDER THE CENTER OF A 40-FOOT
 JV4926'WHITE WOODEN ARMY OBSERVATION TOWER.
 JV4926'
 JV4926'STATION MARK IS A STANDARD BRONZE TABLET SET IN A 12-INCH SQUARE
 JV4926'CONCRETE POST, FLUSH WITH THE SURFACE OF THE GROUND.
 JV4926'
 JV4926'REFERENCE MARK IS E OF THE STATION ON THE EDGE OF THE ARMY
 JV4926'RESERVATION, 24.1 METERS DISTANT FROM THE STATION.
 JV4926'
 JV4926'TO REACH STATION FROM TOLCHESTER, MARYLAND, TURN LEFT AT THE
 JV4926'INTERSECTION 1 MILE E OF TOLCHESTER FERRY WHARF.  CONTINUE ON MAIN
 JV4926'DIRT ROAD FOR 2.9 MILES TO HOUSE AND BARNS.  STATION IS 1/2 MILE NW
 JV4926'OF HOUSE BEYOND SMALL WOODS AND ACROSS FIELD.
 JV4926
 JV4926                          STATION RECOVERY (1961)
 JV4926
 JV4926'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV4926'STATION MARK AND REFERENCE MARK RECOVERED IN GOOD CONDITION.  THE
 JV4926'PUBLISHED DESCRIPTION IS ADEQUATE WITH THE FOLLOWING
 JV4926'ADDITIONS--STATION MARK IS BENEATH A WOODEN ARMY OBSERVATION
 JV4926'TOWER.  THE ARROW ON THE REFERENCE MARK DOES NOT POINT TOWARD THE
 JV4926'STATION.
 JV4926
 JV4926                          STATION RECOVERY (1972)
 JV4926
 JV4926'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (EH)
 JV4926'THE STATION WAS RECOVERED IN GOOD CONDITION.  IT IS NOW ONLY 21
 JV4926'METERS E OF EDGE OF BLUFF DUE TO BANK EROSION.
 JV4926'
 JV4926'THE RM WAS NOT FOUND AND IS BELIEVED TO HAVE BEEN DESTROYED BY
 JV4926'PLOWING.
 JV4926'
 JV4926'TO REACH THE STATION FROM MC CLEANS CORNER (THE INTERSECTION OF
 JV4926'STATE HIGHWAYS 20 AND 21), GO NW ON 21 FOR 0.6 MILES TO FORK IN
 JV4926'ROAD.  GO STRAIGHT ON ASPHALT ROAD 2.1 MILES TO STATE HIGHWAY 445
 JV4926'(BAY SHORE ROAD) AND TURN RIGHT.  GO N 0.7 MILES AND TURN LEFT
 JV4926'ONTO A DIRT ROAD.  FOLLOW ROAD 1.8 MILES TO 40-FOOT, WHITE, WOODEN
 JV4926'OBSERVATION TOWER ERECTED OVER THE STATION.
 JV4926
 JV4926                          STATION RECOVERY (1974)
 JV4926
 JV4926'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 JV4926'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED UNDER WHITE WOOD
 JV4926'TOWER.  AFTER BRIEF SEARCH REFERENCE MARK WAS NOT RECOVERED.  IT IS
 JV4926'POSSIBLE THAT IT STILL EXISTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7297 ***********************************************************************
 JV7297  DESIGNATION -  FAIRPORT
 JV7297  PID         -  JV7297
 JV7297  STATE/COUNTY-  MD/HARFORD
 JV7297  COUNTRY     -  US
 JV7297  USGS QUAD   -  JARRETTSVILLE (2016)
 JV7297
 JV7297                         *CURRENT SURVEY CONTROL
 JV7297  ______________________________________________________________________
 JV7297* NAD 83(2011) POSITION- 39 30 13.06849(N) 076 24 35.99342(W)   ADJUSTED
 JV7297* NAD 83(2011) ELLIP HT-   106.230 (meters)        (06/27/12)   ADJUSTED
 JV7297* NAD 83(2011) EPOCH   -  2010.00
 JV7297* NAVD 88 ORTHO HEIGHT -   139.0   (meters)      456.    (feet) GPS OBS
 JV7297  ______________________________________________________________________
 JV7297  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7297  GEOID HEIGHT    -        -33.040 (meters)                     GEOID93
 JV7297  GEOID HEIGHT    -        -32.733 (meters)                     GEOID18
 JV7297  NAD 83(2011) X  -  1,157,951.885 (meters)                     COMP
 JV7297  NAD 83(2011) Y  - -4,790,056.551 (meters)                     COMP
 JV7297  NAD 83(2011) Z  -  4,035,682.080 (meters)                     COMP
 JV7297  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 JV7297
 JV7297  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7297  Standards:
 JV7297         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7297            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7297  -------------------------------------------------------------------
 JV7297  NETWORK    1.11   2.21           0.48   0.42   1.13      0.23237223
 JV7297  -------------------------------------------------------------------
 JV7297  Click here for local accuracies and other accuracy information.
 JV7297
 JV7297.The horizontal coordinates were established by GPS observations
 JV7297.and adjusted by the National Geodetic Survey in June 2012.
 JV7297
 JV7297.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7297.been affixed to the stable North American tectonic plate. See 
 JV7297.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7297
 JV7297.The horizontal coordinates are valid at the epoch date displayed above
 JV7297.which is a decimal equivalence of Year/Month/Day.
 JV7297
 JV7297.The orthometric height was determined by GPS observations and a
 JV7297.high-resolution geoid model.
 JV7297
 JV7297.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7297.GEOID18 height accuracy estimate available here.
 JV7297
 JV7297.Click photographs - Photos may exist for this station.
 JV7297
 JV7297.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7297
 JV7297.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7297
 JV7297.The ellipsoidal height was determined by GPS observations
 JV7297.and is referenced to NAD 83.
 JV7297
 JV7297. The following values were computed from the NAD 83(2011) position.
 JV7297
 JV7297;                    North         East     Units Scale Factor Converg.
 JV7297;SPC MD       -   204,081.937   450,745.580   MT  1.00000982   +0 22 13.1
 JV7297;SPC MD       -   669,558.82  1,478,821.12   sFT  1.00000982   +0 22 13.1
 JV7297;UTM  18      - 4,373,616.358   378,773.693   MT  0.99978094   -0 53 49.4
 JV7297
 JV7297!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7297!SPC MD       -   0.99998333  x   1.00000982  =   0.99999315
 JV7297!UTM  18      -   0.99998333  x   0.99978094  =   0.99976428
 JV7297
 JV7297_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7877373616(NAD 83)
 JV7297
 JV7297|---------------------------------------------------------------------|
 JV7297| PID    Reference Object                     Distance      Geod. Az  |
 JV7297|                                                           dddmmss.s |
 JV7297| JV7298 FAIRPORT AZ MK                      365.050 METERS 20828     |
 JV7297|---------------------------------------------------------------------|
 JV7297
 JV7297                          SUPERSEDED SURVEY CONTROL
 JV7297
 JV7297  NAD 83(2007)-  39 30 13.06861(N)    076 24 35.99431(W) AD(2002.00) 0
 JV7297  ELLIP H (02/10/07)  106.253  (m)                       GP(2002.00)    
 JV7297  ELLIP H (08/30/02)  106.258  (m)                       GP(       ) 4 2
 JV7297  NAD 83(1991)-  39 30 13.06890(N)    076 24 35.99316(W) AD(       ) 1
 JV7297  ELLIP H (08/17/94)  106.211  (m)                       GP(       ) 4 1
 JV7297
 JV7297.Superseded values are not recommended for survey control.
 JV7297
 JV7297.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7297.See file dsdata.pdf to determine how the superseded data were derived.
 JV7297
 JV7297_MARKER: DD = SURVEY DISK
 JV7297_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7297_STAMPING: 145 FAIRPORT 1993
 JV7297_MARK LOGO: MD-025
 JV7297_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7297_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7297+STABILITY: SURFACE MOTION
 JV7297_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7297+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2002
 JV7297
 JV7297  HISTORY     - Date     Condition        Report By
 JV7297  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7297  HISTORY     - 20020217 GOOD             USPSQD
 JV7297  HISTORY     - 20130520 MARK NOT FOUND   GPSSS
 JV7297
 JV7297                          STATION DESCRIPTION
 JV7297
 JV7297'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7297'THE STATION IS LOCATED AT FALLSTON AIRPORT IN HARFORD COUNTY, MARYLAND
 JV7297'ABOUT 1.3 MILES NORTHWEST OF THE VILLAGE OF LYNCHS CORNER.
 JV7297'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 147 AND
 JV7297'STATE HIGHWAY 152 PROCEED NORTH NORTHWEST ALONG STATE HIGHWAY 152 0.5
 JV7297'MILES TO ITS INTERSECTION WITH CONNOLLY ROAD.  TURN LEFT AND PROCEED
 JV7297'SOUTHWEST ALONG CONNOLLY ROAD 0.1 MILES TO ITS INTERSECTION WITH OLD
 JV7297'FALLSTON ROAD.  TURN RIGHT AND PROCEED NORTHWEST ALONG OLD FALLSTON
 JV7297'ROAD 0.3 MILES TO ITS INTERSECTION WITH RECKFORD ROAD.  TURN LEFT AND
 JV7297'PROCEED SOUTHWEST ALONG RECKFORD ROAD 0.4 TO ITS INTERSECTION WITH
 JV7297'THE AIRPORT ENTRANCE.  TURN LEFT AND PROCEED EAST ALONG AIRPORT ROAD
 JV7297'(GRAVEL ROAD) 0.1 MILES AND THE STATION ON THE RIGHT.
 JV7297'THE STATION IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7297'CONCRETE FLUSH WITH THE GROUND STAMPED 145 FAIRPORT 1993.
 JV7297'THE STATION IS 30.4 FEET SOUTHEAST FROM A WOOD POST, 95.8 FEET
 JV7297'SOUTHEAST FROM A WOOD POST AND 40.7 FEET NORTHWEST FROM THE EDGE OF
 JV7297'RUNWAY.
 JV7297
 JV7297                          STATION RECOVERY (2002)
 JV7297
 JV7297'RECOVERY NOTE BY US POWER SQUADRON 2002 (RG)
 JV7297'RECOVERED IN GOOD CONDITION.
 JV7297
 JV7297                          STATION RECOVERY (2013)
 JV7297
 JV7297'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 JV7297'NOT RECOVERED BY MIKE BUTLER AND DEWEY LILLY OF NORTHERN BAY SURVEYS.
 JV7297'BEHIND LOCKED GATES AND NOT EASILY ACCESSIBLE.  WHO KNOWS IF IT IS
 JV7297'THERE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7298 ***********************************************************************
 JV7298  DESIGNATION -  FAIRPORT AZ MK
 JV7298  PID         -  JV7298
 JV7298  STATE/COUNTY-  MD/HARFORD
 JV7298  COUNTRY     -  US
 JV7298  USGS QUAD   -  JARRETTSVILLE (2016)
 JV7298
 JV7298                         *CURRENT SURVEY CONTROL
 JV7298  ______________________________________________________________________
 JV7298* NAD 83(2011) POSITION- 39 30 02.66306(N) 076 24 43.27677(W)   ADJUSTED
 JV7298* NAD 83(2011) ELLIP HT-   106.466 (meters)        (06/27/12)   ADJUSTED
 JV7298* NAD 83(2011) EPOCH   -  2010.00
 JV7298* NAVD 88 ORTHO HEIGHT -   139.2   (meters)      457.    (feet) GPS OBS
 JV7298  ______________________________________________________________________
 JV7298  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7298  GEOID HEIGHT    -        -33.050 (meters)                     GEOID93
 JV7298  GEOID HEIGHT    -        -32.735 (meters)                     GEOID18
 JV7298  NAD 83(2011) X  -  1,157,830.746 (meters)                     COMP
 JV7298  NAD 83(2011) Y  - -4,790,296.034 (meters)                     COMP
 JV7298  NAD 83(2011) Z  -  4,035,434.614 (meters)                     COMP
 JV7298  LAPLACE CORR    -         -3.08  (seconds)                    DEFLEC18
 JV7298
 JV7298  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7298  Standards:
 JV7298         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7298            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7298  -------------------------------------------------------------------
 JV7298  NETWORK    1.37   2.90           0.61   0.48   1.48      0.29314260
 JV7298  -------------------------------------------------------------------
 JV7298  Click here for local accuracies and other accuracy information.
 JV7298
 JV7298.The horizontal coordinates were established by GPS observations
 JV7298.and adjusted by the National Geodetic Survey in June 2012.
 JV7298
 JV7298.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7298.been affixed to the stable North American tectonic plate. See 
 JV7298.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7298
 JV7298.The horizontal coordinates are valid at the epoch date displayed above
 JV7298.which is a decimal equivalence of Year/Month/Day.
 JV7298
 JV7298.The orthometric height was determined by GPS observations and a
 JV7298.high-resolution geoid model.
 JV7298
 JV7298.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7298.GEOID18 height accuracy estimate available here.
 JV7298
 JV7298.Click photographs - Photos may exist for this station.
 JV7298
 JV7298.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7298
 JV7298.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7298
 JV7298.The ellipsoidal height was determined by GPS observations
 JV7298.and is referenced to NAD 83.
 JV7298
 JV7298. The following values were computed from the NAD 83(2011) position.
 JV7298
 JV7298;                    North         East     Units Scale Factor Converg.
 JV7298;SPC MD       -   203,759.911   450,573.639   MT  1.00000927   +0 22 08.5
 JV7298;SPC MD       -   668,502.31  1,478,257.01   sFT  1.00000927   +0 22 08.5
 JV7298;UTM  18      - 4,373,298.287   378,594.713   MT  0.99978147   -0 53 53.8
 JV7298
 JV7298!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7298!SPC MD       -   0.99998330  x   1.00000927  =   0.99999257
 JV7298!UTM  18      -   0.99998330  x   0.99978147  =   0.99976477
 JV7298
 JV7298_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7859473298(NAD 83)
 JV7298
 JV7298|---------------------------------------------------------------------|
 JV7298| PID    Reference Object                     Distance      Geod. Az  |
 JV7298|                                                           dddmmss.s |
 JV7298| JV7297 FAIRPORT                            365.050 METERS 02828     |
 JV7298|---------------------------------------------------------------------|
 JV7298
 JV7298                          SUPERSEDED SURVEY CONTROL
 JV7298
 JV7298  NAD 83(2007)-  39 30 02.66318(N)    076 24 43.27765(W) AD(2002.00) 0
 JV7298  ELLIP H (02/10/07)  106.488  (m)                       GP(2002.00)    
 JV7298  ELLIP H (08/30/02)  106.496  (m)                       GP(       ) 4 2
 JV7298  NAD 83(1991)-  39 30 02.66343(N)    076 24 43.27655(W) AD(       ) 1
 JV7298  ELLIP H (08/17/94)  106.447  (m)                       GP(       ) 4 1
 JV7298
 JV7298.Superseded values are not recommended for survey control.
 JV7298
 JV7298.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7298.See file dsdata.pdf to determine how the superseded data were derived.
 JV7298
 JV7298_MARKER: DD = SURVEY DISK
 JV7298_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7298_STAMPING: 145 FAIRPORT AZ MK 1993
 JV7298_MARK LOGO: MD-025
 JV7298_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7298_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7298+STABILITY: SURFACE MOTION
 JV7298_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7298+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2002
 JV7298
 JV7298  HISTORY     - Date     Condition        Report By
 JV7298  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7298  HISTORY     - 20020217 GOOD             USPSQD
 JV7298  HISTORY     - 20130520 MARK NOT FOUND   GPSSS
 JV7298
 JV7298                          STATION DESCRIPTION
 JV7298
 JV7298'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7298'THE AZIMUTH MARK IS LOCATED AT FALLSTON AIRPORT IN HARFORD COUNTY,
 JV7298'MARYLAND ABOUT 1.3 MILES NORTHWEST OF THE VILLAGE OF LYNCHS CORNER.
 JV7298'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE HIGHWAY 147
 JV7298'AND STATE HIGHWAY 152 PROCEED NORTH NORTHWEST ALONG STATE HIGHWAY 152
 JV7298'0.5 MILES TO ITS INTERSECTION WITH CONNOLLY ROAD.  TURN LEFT AND
 JV7298'PROCEED SOUTHWEST ALONG CONNOLLY ROAD 0.1 MILES TO ITS INTERSECTION
 JV7298'WITH OLD FALLSTON ROAD.  TURN RIGHT AND PROCEED NORTHWEST ALONG OLD
 JV7298'FALLSTON ROAD 0.3 MILES TO ITS INTERSECTION WITH RECKFORD ROAD.  TURN
 JV7298'LEFT AND PROCEED SOUTHWEST ALONG RECKFORD ROAD 0.4 TO ITS
 JV7298'INTERSECTION WITH THE AIRPORT ENTRANCE.  TURN LEFT AND PROCEED EAST
 JV7298'ALONG AIRPORT ROAD (GRAVEL ROAD) 0.1 MILES PASSING TO THE STATION ON
 JV7298'THE RIGHT. CONTINUE EAST ALONG AIRPORT ROAD 0.05 MILES TO THE MAIN
 JV7298'RUN WAY. TURN RIGHT AND PROCEED SOUTHWEST ALONG THE MAIN RUN WAY 0.3
 JV7298'MILES TO THE AZIMUTH MARK ON THE RIGHT.
 JV7298'THE AZIMUTH MARK IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7298'CONCRETE FLUSH WITH THE GROUND STAMPED 145 FAIRPORT AZ MK 1993.
 JV7298'THE AZIMUTH MARK IS 6.5 FEET SOUTHEAST OF A CULTIVATED FIELD, 87.7
 JV7298'FEET SOUTHWEST FROM A RUNWAY LIGHT, AND 45.1 FEET NORTHWEST FROM THE
 JV7298'EDGE OF THE RUNWAY.
 JV7298
 JV7298                          STATION RECOVERY (2002)
 JV7298
 JV7298'RECOVERY NOTE BY US POWER SQUADRON 2002 (RG)
 JV7298'RECKORD ROAD NOT RECKFORD ROAD.
 JV7298
 JV7298                          STATION RECOVERY (2013)
 JV7298
 JV7298'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 JV7298'NOT RECOVERED BY MIKE BUTLER AND DEWEY LILLY OF NORTHERN BAY SURVEYS.
 JV7298'BEHIND LOCKED GATES AND NOT EASILY ACCESSIBLE.  WHO KNOWS IF IT IS
 JV7298'THERE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5737 ***********************************************************************
 HV5737  DESIGNATION -  FAIRVIEW
 HV5737  PID         -  HV5737
 HV5737  STATE/COUNTY-  MD/TALBOT
 HV5737  COUNTRY     -  US
 HV5737  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5737
 HV5737                         *CURRENT SURVEY CONTROL
 HV5737  ______________________________________________________________________
 HV5737* NAD 83(1991) POSITION- 38 48 04.37636(N) 076 11 59.42500(W)   ADJUSTED
 HV5737* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5737  ______________________________________________________________________
 HV5737  GEOID HEIGHT    -        -34.356 (meters)                     GEOID18
 HV5737  LAPLACE CORR    -         -4.57  (seconds)                    DEFLEC18
 HV5737  HORZ ORDER      -  THIRD
 HV5737
 HV5737.The horizontal coordinates were established by classical geodetic methods
 HV5737.and adjusted by the National Geodetic Survey in January 1992.
 HV5737
 HV5737.The orthometric height was scaled from a topographic map.
 HV5737
 HV5737.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5737.GEOID18 height accuracy estimate available here.
 HV5737
 HV5737.Click photographs - Photos may exist for this station.
 HV5737
 HV5737.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5737
 HV5737. The following values were computed from the NAD 83(1991) position.
 HV5737
 HV5737;                    North         East     Units Scale Factor Converg.
 HV5737;SPC MD       -   126,244.149   469,504.174   MT  0.99995069   +0 30 07.9
 HV5737;SPC MD       -   414,186.01  1,540,364.94   sFT  0.99995069   +0 30 07.9
 HV5737;UTM  18      - 4,295,401.289   395,811.988   MT  0.99973367   -0 45 06.9
 HV5737
 HV5737!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5737!SPC MD       -   1.00000543  x   0.99995069  =   0.99995612
 HV5737!UTM  18      -   1.00000543  x   0.99973367  =   0.99973910
 HV5737
 HV5737:                Primary Azimuth Mark                     Grid Az
 HV5737:SPC MD       -  MARENGO                                  147 33 30.7
 HV5737:UTM  18      -  MARENGO                                  148 48 45.5
 HV5737
 HV5737_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9581195401(NAD 83)
 HV5737
 HV5737|---------------------------------------------------------------------|
 HV5737| PID    Reference Object                     Distance      Geod. Az  |
 HV5737|                                                           dddmmss.s |
 HV5737| HV5675 MARENGO                             APPROX. 2.2 KM 1480338.6 |
 HV5737|---------------------------------------------------------------------|
 HV5737
 HV5737                          SUPERSEDED SURVEY CONTROL
 HV5737
 HV5737  NAD 83(1986)-  38 48 04.37210(N)    076 11 59.43870(W) AD(       ) 3
 HV5737  NAD 27      -  38 48 03.91400(N)    076 12 00.65800(W) AD(       ) 3
 HV5737  USBS        -  38 48 08.12000(N)    076 11 43.53000(W) AD(       ) 3
 HV5737  USSD        -  38 48 04.29400(N)    076 12 00.43200(W) AD(       ) 3
 HV5737
 HV5737.Superseded values are not recommended for survey control.
 HV5737
 HV5737.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5737.See file dsdata.pdf to determine how the superseded data were derived.
 HV5737
 HV5737_MARKER: Z = SEE DESCRIPTION
 HV5737_SETTING: 0 = UNSPECIFIED SETTING
 HV5737_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5737
 HV5737  HISTORY     - Date     Condition        Report By
 HV5737  HISTORY     - 1899     MONUMENTED       CGS
 HV5737  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5737
 HV5737                          STATION DESCRIPTION
 HV5737
 HV5737'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (JWD)
 HV5737'STATION IS ON EASTERN SHORE OF MILES RIVER, ON FAIRVIEW POINT, ON
 HV5737'BORDER OF MARSH BETWEEN SMALL POND OR SLOUGH AND HEAVY WOODS.
 HV5737'MARKED BY CEDAR STUB.
 HV5737
 HV5737                          STATION RECOVERY (1940)
 HV5737
 HV5737'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5737'STATION IS ON EASTERN SHORE OF MILES RIVER, ON FAIRVIEW POINT.
 HV5737'MARK SEARCHED FOR BUT NOT RECOVERED.  BELIEVED TO HAVE BEEN WASHED
 HV5737'OUT AS THE SHORE SHOWS EVIDENCE OF EROSION.
 HV5737'
 HV5737'RECOMMEND STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4748 ***********************************************************************
 JV4748  DESIGNATION -  FAIRVIEW
 JV4748  PID         -  JV4748
 JV4748  STATE/COUNTY-  MD/WASHINGTON
 JV4748  COUNTRY     -  US
 JV4748  USGS QUAD   -  CLEAR SPRING (2016)
 JV4748
 JV4748                         *CURRENT SURVEY CONTROL
 JV4748  ______________________________________________________________________
 JV4748* NAD 83(1991) POSITION- 39 39 21.97086(N) 077 58 10.19017(W)   ADJUSTED
 JV4748* NAVD 88 ORTHO HEIGHT -   515.    (meters)     1690.    (feet) SCALED
 JV4748  ______________________________________________________________________
 JV4748  GEOID HEIGHT    -        -34.240 (meters)                     GEOID18
 JV4748  LAPLACE CORR    -         -1.29  (seconds)                    DEFLEC18
 JV4748  HORZ ORDER      -  FIRST
 JV4748
 JV4748.The horizontal coordinates were established by classical geodetic methods
 JV4748.and adjusted by the National Geodetic Survey in January 1992.
 JV4748
 JV4748.The orthometric height was scaled from a topographic map.
 JV4748
 JV4748.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4748.GEOID18 height accuracy estimate available here.
 JV4748
 JV4748.Click photographs - Photos may exist for this station.
 JV4748
 JV4748.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4748
 JV4748. The following values were computed from the NAD 83(1991) position.
 JV4748
 JV4748;                    North         East     Units Scale Factor Converg.
 JV4748;SPC MD       -   221,288.753   316,795.096   MT  1.00004256   -0 36 30.6
 JV4748;SPC MD       -   726,011.52  1,039,351.91   sFT  1.00004256   -0 36 30.6
 JV4748;SPC PA S     -    35,862.436   581,161.577   MT  1.00005491   -0 08 32.7
 JV4748;SPC PA S     -   117,658.68  1,906,694.27   sFT  1.00005491   -0 08 32.7
 JV4748;SPC WV N     -   129,466.201   731,334.685   MT  0.99994088   +0 58 34.0
 JV4748;SPC WV N     -   424,757.03  2,399,387.21   sFT  0.99994088   +0 58 34.0
 JV4748;UTM  18      - 4,393,804.409   245,236.244   MT  1.00039916   -1 53 45.9
 JV4748;UTM  17      - 4,393,979.490   759,998.536   MT  1.00043234   +1 56 06.3
 JV4748
 JV4748!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4748!SPC MD       -   0.99992461  x   1.00004256  =   0.99996717
 JV4748!SPC PA S     -   0.99992461  x   1.00005491  =   0.99997952
 JV4748!SPC WV N     -   0.99992461  x   0.99994088  =   0.99986550
 JV4748!UTM  18      -   0.99992461  x   1.00039916  =   1.00032374
 JV4748!UTM  17      -   0.99992461  x   1.00043234  =   1.00035692
 JV4748
 JV4748:                Primary Azimuth Mark                     Grid Az
 JV4748:SPC MD       -  KAISES                                   028 21 37.7
 JV4748:SPC PA S     -  KAISES                                   027 53 39.8
 JV4748:SPC WV N     -  KAISES                                   026 46 33.1
 JV4748:UTM  18      -  KAISES                                   029 38 53.0
 JV4748:UTM  17      -  KAISES                                   025 49 00.8
 JV4748
 JV4748_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ4523693804(NAD 83)
 JV4748
 JV4748|---------------------------------------------------------------------|
 JV4748| PID    Reference Object                     Distance      Geod. Az  |
 JV4748|                                                           dddmmss.s |
 JV4748| CJ8136 FAIRVIEW RM 2                        17.450 METERS 01348     |
 JV4748| JV4758 KAISES                              APPROX.10.0 KM 0274507.1 |
 JV4748| CJ8135 FAIRVIEW RM 1                        10.970 METERS 25521     |
 JV4748|---------------------------------------------------------------------|
 JV4748
 JV4748                          SUPERSEDED SURVEY CONTROL
 JV4748
 JV4748  NAD 83(1986)-  39 39 21.97041(N)    077 58 10.19751(W) AD(       ) 1
 JV4748  NAD 27      -  39 39 21.62600(N)    077 58 11.20200(W) AD(       ) 1
 JV4748
 JV4748.Superseded values are not recommended for survey control.
 JV4748
 JV4748.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4748.See file dsdata.pdf to determine how the superseded data were derived.
 JV4748
 JV4748_MARKER: DS = TRIANGULATION STATION DISK
 JV4748_SETTING: 66 = SET IN ROCK OUTCROP
 JV4748_STAMPING: FAIRVIEW 1935
 JV4748_MARK LOGO: CGS
 JV4748_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4748+STABILITY: POSITION/ELEVATION WELL
 JV4748
 JV4748  HISTORY     - Date     Condition        Report By
 JV4748  HISTORY     - 1935     MONUMENTED       CGS
 JV4748  HISTORY     - 1955     SEE DESCRIPTION  CGS
 JV4748
 JV4748                          STATION DESCRIPTION
 JV4748
 JV4748'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JB)
 JV4748'THIS IS A FIRST ORDER STATION LOCATED 2 MILES W OF CLEARSPRING,
 JV4748'MARYLAND, ON THE HIGHEST POINT OF FAIRVIEW MOUNTAIN.  STATION
 JV4748'MARK IS A STANDARD BRONZE DISK SET IN A LARGE SLOPING ROCK IN A
 JV4748'BURNED AREA.
 JV4748'
 JV4748'REFERENCE MARK NO.1 A STANDARD BRONZE DISK SET IN A LARGE FLAT
 JV4748'BOULDER 10.970 METERS NW OF THE STATION.
 JV4748'
 JV4748'REFERENCE MARK NO.2 IS LOCATED 17.450 METERS SE OF THE
 JV4748'STATION.  MARK IS A STANDARD BRONZE DISK SET IN A LARGE BOULDER.
 JV4748'
 JV4748'TO REACH STATION FROM CLEARSPRING, MARYLAND, GO W 2.5 MILES TO
 JV4748'TOP OF THE MOUNTAIN WHERE THE HIGHWAY CROSSES.  LEAVE THE TRUCKS
 JV4748'HERE AND FOLLOW A PACK UP THE MOUNTAIN N A DISTANCE OF ABOUT
 JV4748'1.25 MILE (OR 40 MINUTES WITH A PACK) TO N END OF THE MOUNTAIN
 JV4748'AND STATION.
 JV4748'
 JV4748'CROSS MOUNTAIN FIRE TOWER IS VISIBLE FROM THE STAND.
 JV4748'
 JV4748'A 4-FOOT STAND CLEARED ALL LINES.
 JV4748
 JV4748                          STATION RECOVERY (1955)
 JV4748
 JV4748'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4748'THE STATION MARK HAS BEEN DESTROYED BECAUSE OF CONSTRUCTION AT
 JV4748'THE STATION SITE.  REFERENCE MARKS 1 AND 2 WERE FOUND INTACT AND
 JV4748'IN GOOD CONDITION.  REFERENCE MARK 2 WAS DESTROYED AND A NEW
 JV4748'STATION DISK, FAIRVIEW 2, WAS ESTABLISHED IN THE SAME DRILL
 JV4748'HOLE.  SEE DESCRIPTION FOR FAIRVIEW 2 1955.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4750 ***********************************************************************
 JV4750  DESIGNATION -  FAIRVIEW 2
 JV4750  PID         -  JV4750
 JV4750  STATE/COUNTY-  MD/WASHINGTON
 JV4750  COUNTRY     -  US
 JV4750  USGS QUAD   -  CLEAR SPRING (2016)
 JV4750
 JV4750                         *CURRENT SURVEY CONTROL
 JV4750  ______________________________________________________________________
 JV4750* NAD 83(1991) POSITION- 39 39 21.41384(N) 077 58 10.28516(W)   ADJUSTED
 JV4750* NAVD 88 ORTHO HEIGHT -   515.    (meters)     1690.    (feet) SCALED
 JV4750  ______________________________________________________________________
 JV4750  GEOID HEIGHT    -        -34.240 (meters)                     GEOID18
 JV4750  LAPLACE CORR    -         -1.29  (seconds)                    DEFLEC18
 JV4750  HORZ ORDER      -  FIRST
 JV4750
 JV4750.The horizontal coordinates were established by classical geodetic methods
 JV4750.and adjusted by the National Geodetic Survey in January 1992.
 JV4750
 JV4750.The orthometric height was scaled from a topographic map.
 JV4750
 JV4750.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4750.GEOID18 height accuracy estimate available here.
 JV4750
 JV4750.Click photographs - Photos may exist for this station.
 JV4750
 JV4750.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4750
 JV4750. The following values were computed from the NAD 83(1991) position.
 JV4750
 JV4750;                    North         East     Units Scale Factor Converg.
 JV4750;SPC MD       -   221,271.598   316,792.650   MT  1.00004252   -0 36 30.6
 JV4750;SPC MD       -   725,955.23  1,039,343.89   sFT  1.00004252   -0 36 30.6
 JV4750;SPC PA S     -    35,845.262   581,159.270   MT  1.00005495   -0 08 32.7
 JV4750;SPC PA S     -   117,602.33  1,906,686.70   sFT  1.00005495   -0 08 32.7
 JV4750;SPC WV N     -   129,448.987   731,332.713   MT  0.99994088   +0 58 33.9
 JV4750;SPC WV N     -   424,700.55  2,399,380.74   sFT  0.99994088   +0 58 33.9
 JV4750;UTM  18      - 4,393,787.307   245,233.412   MT  1.00039917   -1 53 45.9
 JV4750;UTM  17      - 4,393,962.237   759,996.852   MT  1.00043233   +1 56 06.2
 JV4750
 JV4750!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4750!SPC MD       -   0.99992461  x   1.00004252  =   0.99996713
 JV4750!SPC PA S     -   0.99992461  x   1.00005495  =   0.99997956
 JV4750!SPC WV N     -   0.99992461  x   0.99994088  =   0.99986550
 JV4750!UTM  18      -   0.99992461  x   1.00039917  =   1.00032375
 JV4750!UTM  17      -   0.99992461  x   1.00043233  =   1.00035691
 JV4750
 JV4750:                Primary Azimuth Mark                     Grid Az
 JV4750:SPC MD       -  FAIRVIEW 2 AZ MK RESET                   091 48 05.8
 JV4750:SPC PA S     -  FAIRVIEW 2 AZ MK RESET                   091 20 07.9
 JV4750:SPC WV N     -  FAIRVIEW 2 AZ MK RESET                   090 13 01.3
 JV4750:UTM  18      -  FAIRVIEW 2 AZ MK RESET                   093 05 21.1
 JV4750:UTM  17      -  FAIRVIEW 2 AZ MK RESET                   089 15 29.0
 JV4750
 JV4750_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ4523393787(NAD 83)
 JV4750
 JV4750|---------------------------------------------------------------------|
 JV4750| PID    Reference Object                     Distance      Geod. Az  |
 JV4750|                                                           dddmmss.s |
 JV4750| CJ8135 FAIRVIEW RM 1                        24.422 METERS 03023     |
 JV4750| CJ8138 FAIRVIEW 2 AZ MK RESET                             0911135.2 |
 JV4750| CJ8137 FAIRVIEW 2 AZ MK                                   0911135.2 |
 JV4750| CJ9756 FAIRVIEW RM 3                        12.336 METERS 29659     |
 JV4750|---------------------------------------------------------------------|
 JV4750
 JV4750                          SUPERSEDED SURVEY CONTROL
 JV4750
 JV4750  NAD 83(1986)-  39 39 21.41333(N)    077 58 10.29342(W) AD(       ) 1
 JV4750  NAD 27      -  39 39 21.07000(N)    077 58 11.29700(W) AD(       ) 1
 JV4750
 JV4750.Superseded values are not recommended for survey control.
 JV4750
 JV4750.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4750.See file dsdata.pdf to determine how the superseded data were derived.
 JV4750
 JV4750_MARKER: DS = TRIANGULATION STATION DISK
 JV4750_SETTING: 66 = SET IN ROCK OUTCROP
 JV4750_STAMPING: FAIRVIEW 2 1955
 JV4750_MARK LOGO: CGS
 JV4750_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4750+STABILITY: POSITION/ELEVATION WELL
 JV4750
 JV4750  HISTORY     - Date     Condition        Report By
 JV4750  HISTORY     - 1955     MONUMENTED       CGS
 JV4750  HISTORY     - 1962     GOOD             CGS
 JV4750
 JV4750                          STATION DESCRIPTION
 JV4750
 JV4750'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4750'THE STATION IS LOCATED ON FAIRVIEW MOUNTAIN ABOUT 2 MILES WEST OF
 JV4750'CLEAR SPRING, 40 FEET SOUTH OF THE SOUTHEAST CORNER OF THE POTOMAC
 JV4750'EDISON CO. RELAY STATION POWER HOUSE.
 JV4750'
 JV4750'TO REACH THE STATION FROM THE JUNCTION OF FORT FREDERICK ROAD
 JV4750'AND U.S. HIGHWAY 40 IN CLEAR SPRING, GO WEST ON HIGHWAY 40 FOR
 JV4750'1.1 MILES TO THE AZIMUTH MARK ON THE LEFT AS DESCRIBED, CONTINUE
 JV4750'ON THE HIGHWAY FOR 0.9 MILE TO THE SUMMIT OF FAIRVIEW MOUNTAIN,
 JV4750'CONTINUE WEST ON THE HIGHWAY FOR 1.0 MILE TO THE FUNKHOUSER
 JV4750'ROAD ON THE RIGHT, TURN RIGHT ON THE FUNKHOUSER ROAD FOR 0.1
 JV4750'MILE TO A FORK, TAKE RIGHT ROAD AND GO 2.3 MILES TO HANGING
 JV4750'ROCK ROAD, TURN RIGHT ON HANGING ROCK ROAD FOR 0.15 MILE TO A
 JV4750'FORK, TAKE RIGHT ROAD AND GO 0.55 MILE TO HANGING ROCK ON THE
 JV4750'LEFT, CONTINUE STRAIGHT AHEAD FOR 0.15 MILE TO A SIDE ROAD
 JV4750'ON THE RIGHT, TURN RIGHT ON A TRACK ROAD AND GO 1.6 MILES
 JV4750'TO A POWERLINE, TURN LEFT UP STEEP HILL FOR 0.15 MILE TO A CHAIN
 JV4750'GATE, PASS THROUGH GATE AND CONTINUE UP HILL FOR 0.35 MILE
 JV4750'TO THE TOP OF THE MOUNTAIN AND THE STATION.
 JV4750'
 JV4750'THE STATION MARK IS CEMENTED IN A DRILL HOLE IN OUTCROPPING
 JV4750'BEDROCK THAT SLOPES TOWARDS THE EAST, AND PROJECTS ABOUT 2
 JV4750'FEET.  THE DISK IS STAMPED FAIRVIEW 2 1955.
 JV4750'
 JV4750'REFERENCE MARK 1 IS CEMENTED IN A DRILL HOLE IN OUTCROPPING
 JV4750'BEDROCK THAT IS FLUSH WITH THE GROUND.  IT IS 28 FEET NORTHEAST
 JV4750'OF THE NORTHEAST CORNER OF THE POWER HOUSE.  THE DISK IS STAMPED
 JV4750'FAIRVIEW NO 1 1935.
 JV4750'
 JV4750'REFERENCE MARK 3 IS CEMENTED IN A DRILL HOLE IN OUTCROPPING
 JV4750'BEDROCK WHICH PROJECTS ABOUT 2 INCHES.  IT IS 44 FEET SOUTH OF
 JV4750'THE SOUTHWEST CORNER OF THE POWER HOUSE.  THE DISK IS STAMPED
 JV4750'FAIRVIEW NO 3 1955.
 JV4750'
 JV4750'THE AZIMUTH MARK IS 52 FEET SOUTHEAST OF THE CENTER OF
 JV4750'U.S. HIGHWAY 40 AND 2 FEET WEST OF A 4 IN X 4 IN WHITE WITNESS
 JV4750'POST.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 JV4750'FAIRVIEW 2 1955.
 JV4750'
 JV4750'HEIGHT OF LIGHT ABOVE STATION MARK 14 METERS.
 JV4750
 JV4750                          STATION RECOVERY (1962)
 JV4750
 JV4750'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (CWP)
 JV4750'STATION WAS RECOVERED.  THE AZIMUTH MARK WAS MOVED IN LINE TOWARD
 JV4750'THE STATION AND A NEW DESCRIPTION SHOULD READ AS FOLLOWS--
 JV4750'
 JV4750'IT IS LOCATED 1.35 MILES WEST ALONG U.S. ROUTE 40 FROM THE
 JV4750'JUNCTION OF FORT FREDERICK ROAD IN CLEARSPRING, 20.0 FEET NORTH
 JV4750'OF THE CENTERLINE OF U.S. ROUTE 40, 50.0 FEET EAST OF THE BREAK
 JV4750'IN THE GUARD RAIL (UNUSED ENTRANCE), 96.5 FEET WEST OF
 JV4750'C. AND P. POLE NO. 712, 102.0 FEET EAST OF C. AND P. POLE NO.
 JV4750'714, AND 3.0 FEET NORTH OF THE GUARD RAIL.
 JV4750'
 JV4750'THE AZIMUTH MARK IS A STANDARD DISK SET IN CONCRETE FLUSH WITH THE
 JV4750'GROUND, AND THE MARK IS STAMPED FAIRVIEW 2 1955 RESET 1962.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6750 ***********************************************************************
 JV6750  DESIGNATION -  FAIRWAY
 JV6750  PID         -  JV6750
 JV6750  STATE/COUNTY-  MD/HARFORD
 JV6750  COUNTRY     -  US
 JV6750  USGS QUAD   -  BEL AIR (2016)
 JV6750
 JV6750                         *CURRENT SURVEY CONTROL
 JV6750  ______________________________________________________________________
 JV6750* NAD 83(2011) POSITION- 39 30 45.20212(N) 076 17 52.28853(W)   ADJUSTED
 JV6750* NAD 83(2011) ELLIP HT-    63.258 (meters)        (06/27/12)   ADJUSTED
 JV6750* NAD 83(2011) EPOCH   -  2010.00
 JV6750* NAVD 88 ORTHO HEIGHT -    96.2   (meters)      316.    (feet) GPS OBS
 JV6750  ______________________________________________________________________
 JV6750  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6750  GEOID HEIGHT    -        -33.220 (meters)                     GEOID93
 JV6750  GEOID HEIGHT    -        -32.933 (meters)                     GEOID18
 JV6750  NAD 83(2011) X  -  1,167,167.642 (meters)                     COMP
 JV6750  NAD 83(2011) Y  - -4,787,136.270 (meters)                     COMP
 JV6750  NAD 83(2011) Z  -  4,036,419.352 (meters)                     COMP
 JV6750  LAPLACE CORR    -         -3.27  (seconds)                    DEFLEC18
 JV6750
 JV6750  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6750  Standards:
 JV6750         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6750            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6750  -------------------------------------------------------------------
 JV6750  NETWORK    1.07   2.18           0.48   0.36   1.11      0.34901498
 JV6750  -------------------------------------------------------------------
 JV6750  Click here for local accuracies and other accuracy information.
 JV6750
 JV6750.The horizontal coordinates were established by GPS observations
 JV6750.and adjusted by the National Geodetic Survey in June 2012.
 JV6750
 JV6750.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6750.been affixed to the stable North American tectonic plate. See 
 JV6750.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6750
 JV6750.The horizontal coordinates are valid at the epoch date displayed above
 JV6750.which is a decimal equivalence of Year/Month/Day.
 JV6750
 JV6750.The orthometric height was determined by GPS observations and a
 JV6750.high-resolution geoid model.
 JV6750
 JV6750.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6750.GEOID18 height accuracy estimate available here.
 JV6750
 JV6750.Click photographs - Photos may exist for this station.
 JV6750
 JV6750.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6750
 JV6750.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6750
 JV6750.The ellipsoidal height was determined by GPS observations
 JV6750.and is referenced to NAD 83.
 JV6750
 JV6750. The following values were computed from the NAD 83(2011) position.
 JV6750
 JV6750;                    North         East     Units Scale Factor Converg.
 JV6750;SPC MD       -   205,141.190   460,382.874   MT  1.00001154   +0 26 26.5
 JV6750;SPC MD       -   673,034.05  1,510,439.48   sFT  1.00001154   +0 26 26.5
 JV6750;UTM  18      - 4,374,462.061   388,429.698   MT  0.99975326   -0 49 33.0
 JV6750
 JV6750!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6750!SPC MD       -   0.99999008  x   1.00001154  =   1.00000162
 JV6750!UTM  18      -   0.99999008  x   0.99975326  =   0.99974334
 JV6750
 JV6750_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8842974462(NAD 83)
 JV6750
 JV6750|---------------------------------------------------------------------|
 JV6750| PID    Reference Object                     Distance      Geod. Az  |
 JV6750|                                                           dddmmss.s |
 JV6750| JV6751 FAIRWAY AZ MK                       318.102 METERS 01845     |
 JV6750|---------------------------------------------------------------------|
 JV6750
 JV6750                          SUPERSEDED SURVEY CONTROL
 JV6750
 JV6750  NAD 83(2007)-  39 30 45.20225(N)    076 17 52.28925(W) AD(2002.00) 0
 JV6750  ELLIP H (02/10/07)   63.276  (m)                       GP(2002.00)    
 JV6750  ELLIP H (08/30/02)   63.286  (m)                       GP(       ) 4 2
 JV6750  NAD 83(1991)-  39 30 45.20175(N)    076 17 52.28942(W) AD(       ) 1
 JV6750  ELLIP H (01/27/92)   63.230  (m)                       GP(       ) 4 1
 JV6750  NAD 83(1986)-  39 30 45.19547(N)    076 17 52.29668(W) AD(       ) 1
 JV6750  NGVD 29 (06/18/91)   96.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6750
 JV6750.Superseded values are not recommended for survey control.
 JV6750
 JV6750.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6750.See file dsdata.pdf to determine how the superseded data were derived.
 JV6750
 JV6750_MARKER: DD = SURVEY DISK
 JV6750_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6750_STAMPING: 33 FAIRWAY 1989
 JV6750_MARK LOGO: MD-025
 JV6750_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6750_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6750+STABILITY: SURFACE MOTION
 JV6750_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6750+SATELLITE: SATELLITE OBSERVATIONS - January 20, 1994
 JV6750
 JV6750  HISTORY     - Date     Condition        Report By
 JV6750  HISTORY     - 1989     MONUMENTED       RDA
 JV6750  HISTORY     - 19931229 GOOD
 JV6750  HISTORY     - 19940120 GOOD             GEOMET
 JV6750
 JV6750                          STATION DESCRIPTION
 JV6750
 JV6750'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6750'THE STATION IS LOCATED IN SOUTH CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6750'2 MILES SOUTHEAST OF THE TOWN OF BEL AIR IN THE VILLAGE OF FAIRWAY ON
 JV6750'WHEEL ROAD.
 JV6750'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 136 AND
 JV6750'STATE HIGHWAY 543 PROCEED NORTHWEST ALONG HIGHWAY 543 1.6 MILES TO ITS
 JV6750'INTERSECTION WITH WHEEL ROAD.  TURN LEFT AND PROCEED SOUTHWEST ALONG
 JV6750'WHEEL ROAD 1.05 MILES TO THE STATION ON THE RIGHT.
 JV6750'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6750'ABOUT 1 INCH BELOW GROUND STAMPED 33 FAIRWAY 1989.  THE STATION IS
 JV6750'47.3 FEET NORTHEAST FROM A 14 INCH ELM TREE, 12.2 FEET SOUTHEAST FROM
 JV6750'A TELEPHONE STAND, 9.2 FEET NORTHWEST FROM THE WEST EDGE OF PAVEMENT
 JV6750'OF WHEEL ROAD.
 JV6750
 JV6750                          STATION RECOVERY (1993)
 JV6750
 JV6750'RECOVERED 1993
 JV6750'RECOVERED IN GOOD CONDITION.
 JV6750
 JV6750                          STATION RECOVERY (1994)
 JV6750
 JV6750'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1994
 JV6750'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6751 ***********************************************************************
 JV6751  DESIGNATION -  FAIRWAY AZ MK
 JV6751  PID         -  JV6751
 JV6751  STATE/COUNTY-  MD/HARFORD
 JV6751  COUNTRY     -  US
 JV6751  USGS QUAD   -  BEL AIR (2016)
 JV6751
 JV6751                         *CURRENT SURVEY CONTROL
 JV6751  ______________________________________________________________________
 JV6751* NAD 83(2011) POSITION- 39 30 54.96937(N) 076 17 48.00872(W)   ADJUSTED
 JV6751* NAD 83(2011) ELLIP HT-    60.698 (meters)        (06/27/12)   ADJUSTED
 JV6751* NAD 83(2011) EPOCH   -  2010.00
 JV6751* NAVD 88 ORTHO HEIGHT -    93.6   (meters)      307.    (feet) VERTCON3
 JV6751  ______________________________________________________________________
 JV6751  GEOID HEIGHT    -        -32.927 (meters)                     GEOID18
 JV6751  NAD 83(2011) X  -  1,167,221.099 (meters)                     COMP
 JV6751  NAD 83(2011) Y  - -4,786,923.927 (meters)                     COMP
 JV6751  NAD 83(2011) Z  -  4,036,650.112 (meters)                     COMP
 JV6751  LAPLACE CORR    -         -3.26  (seconds)                    DEFLEC18
 JV6751
 JV6751  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6751  Standards:
 JV6751         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6751            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6751  -------------------------------------------------------------------
 JV6751  NETWORK    1.22   3.65           0.50   0.47   1.86      0.43516454
 JV6751  -------------------------------------------------------------------
 JV6751  Click here for local accuracies and other accuracy information.
 JV6751
 JV6751.The horizontal coordinates were established by GPS observations
 JV6751.and adjusted by the National Geodetic Survey in June 2012.
 JV6751
 JV6751.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6751.been affixed to the stable North American tectonic plate. See 
 JV6751.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6751
 JV6751.The horizontal coordinates are valid at the epoch date displayed above
 JV6751.which is a decimal equivalence of Year/Month/Day.
 JV6751
 JV6751.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6751.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6751
 JV6751.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6751.GEOID18 height accuracy estimate available here.
 JV6751
 JV6751.Click photographs - Photos may exist for this station.
 JV6751
 JV6751.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6751
 JV6751.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6751
 JV6751.The ellipsoidal height was determined by GPS observations
 JV6751.and is referenced to NAD 83.
 JV6751
 JV6751. The following values were computed from the NAD 83(2011) position.
 JV6751
 JV6751;                    North         East     Units Scale Factor Converg.
 JV6751;SPC MD       -   205,443.197   460,482.789   MT  1.00001207   +0 26 29.2
 JV6751;SPC MD       -   674,024.89  1,510,767.28   sFT  1.00001207   +0 26 29.2
 JV6751;UTM  18      - 4,374,761.709   388,536.236   MT  0.99975297   -0 49 30.5
 JV6751
 JV6751!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6751!SPC MD       -   0.99999048  x   1.00001207  =   1.00000255
 JV6751!UTM  18      -   0.99999048  x   0.99975297  =   0.99974345
 JV6751
 JV6751_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8853674761(NAD 83)
 JV6751
 JV6751|---------------------------------------------------------------------|
 JV6751| PID    Reference Object                     Distance      Geod. Az  |
 JV6751|                                                           dddmmss.s |
 JV6751| JV6750 FAIRWAY                             318.102 METERS 19845     |
 JV6751|---------------------------------------------------------------------|
 JV6751
 JV6751                          SUPERSEDED SURVEY CONTROL
 JV6751
 JV6751  NAD 83(2007)-  39 30 54.96951(N)    076 17 48.00944(W) AD(2002.00) 0
 JV6751  ELLIP H (02/10/07)   60.716  (m)                       GP(2002.00)    
 JV6751  ELLIP H (09/18/02)   60.722  (m)                       GP(       ) 4 2
 JV6751  NAD 83(1991)-  39 30 54.96899(N)    076 17 48.00961(W) AD(       ) 1
 JV6751  ELLIP H (01/27/92)   60.679  (m)                       GP(       ) 4 1
 JV6751  NAD 83(1986)-  39 30 54.96270(N)    076 17 48.01684(W) AD(       ) 1
 JV6751  NGVD 29 (06/18/91)   93.9    (m)  UNKNOWN  model used  GPS OBS        
 JV6751
 JV6751.Superseded values are not recommended for survey control.
 JV6751
 JV6751.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6751.See file dsdata.pdf to determine how the superseded data were derived.
 JV6751
 JV6751_MARKER: DZ = AZIMUTH MARK DISK
 JV6751_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6751_STAMPING: 33 FAIRWAY 1989
 JV6751_MARK LOGO: MD-025
 JV6751_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6751_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6751+STABILITY: SURFACE MOTION
 JV6751_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6751+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6751
 JV6751  HISTORY     - Date     Condition        Report By
 JV6751  HISTORY     - 1989     MONUMENTED       RDA
 JV6751
 JV6751                          STATION DESCRIPTION
 JV6751
 JV6751'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6751'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTHEAST ALONG
 JV6751'WHEEL ROAD 0.2 MILES TO THE AZIMUTH MARK ON THE RIGHT.
 JV6751'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6751'ABOUT 1 INCH BELOW GROUND STAMPED 33 FAIRWAY 1989.  THE MARK IS 15.7
 JV6751'FEET NORTHEAST FROM G AND E POLE NUMBER 116542, 37.7 FEET SOUTHEAST
 JV6751'FROM G AND E POLE NUMBER 348833, 4.2 FEET SOUTHEAST FROM THE EAST EDGE
 JV6751'OF PAVEMENT OF WHEEL ROAD AND 1043.65 FEET FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7210 ***********************************************************************
 JV7210  DESIGNATION -  FALL
 JV7210  PID         -  JV7210
 JV7210  STATE/COUNTY-  MD/CARROLL
 JV7210  COUNTRY     -  US
 JV7210  USGS QUAD   -  LIBERTYTOWN (2016)
 JV7210
 JV7210                         *CURRENT SURVEY CONTROL
 JV7210  ______________________________________________________________________
 JV7210* NAD 83(2011) POSITION- 39 24 28.79999(N) 077 07 36.83564(W)   ADJUSTED
 JV7210* NAD 83(2011) ELLIP HT-   189.141 (meters)        (06/27/12)   ADJUSTED
 JV7210* NAD 83(2011) EPOCH   -  2010.00
 JV7210* NAVD 88 ORTHO HEIGHT -   221.1   (meters)      725.    (feet) GPS OBS
 JV7210  ______________________________________________________________________
 JV7210  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7210  GEOID HEIGHT    -        -31.989 (meters)                     GEOID99
 JV7210  GEOID HEIGHT    -        -31.987 (meters)                     GEOID18
 JV7210  NAD 83(2011) X  -  1,099,445.794 (meters)                     COMP
 JV7210  NAD 83(2011) Y  - -4,810,809.898 (meters)                     COMP
 JV7210  NAD 83(2011) Z  -  4,027,536.835 (meters)                     COMP
 JV7210  LAPLACE CORR    -          2.83  (seconds)                    DEFLEC18
 JV7210
 JV7210  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7210  Standards:
 JV7210         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7210            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7210  -------------------------------------------------------------------
 JV7210  NETWORK    2.96   8.74           1.29   1.11   4.46      0.19059778
 JV7210  -------------------------------------------------------------------
 JV7210  Click here for local accuracies and other accuracy information.
 JV7210
 JV7210.The horizontal coordinates were established by GPS observations
 JV7210.and adjusted by the National Geodetic Survey in June 2012.
 JV7210
 JV7210.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7210.been affixed to the stable North American tectonic plate. See 
 JV7210.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7210
 JV7210.The horizontal coordinates are valid at the epoch date displayed above
 JV7210.which is a decimal equivalence of Year/Month/Day.
 JV7210
 JV7210.The orthometric height was determined by GPS observations and a
 JV7210.high-resolution geoid model.
 JV7210
 JV7210.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7210.GEOID18 height accuracy estimate available here.
 JV7210
 JV7210.Click photographs - Photos may exist for this station.
 JV7210
 JV7210.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7210
 JV7210.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7210
 JV7210.The ellipsoidal height was determined by GPS observations
 JV7210.and is referenced to NAD 83.
 JV7210
 JV7210. The following values were computed from the NAD 83(2011) position.
 JV7210
 JV7210;                    North         East     Units Scale Factor Converg.
 JV7210;SPC MD       -   193,308.276   389,070.707   MT  0.99999292   -0 04 46.7
 JV7210;SPC MD       -   634,212.24  1,276,476.14   sFT  0.99999292   -0 04 46.7
 JV7210;UTM  18      - 4,364,212.603   316,882.241   MT  1.00001287   -1 21 02.2
 JV7210
 JV7210!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7210!SPC MD       -   0.99997033  x   0.99999292  =   0.99996325
 JV7210!UTM  18      -   0.99997033  x   1.00001287  =   0.99998320
 JV7210
 JV7210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1688264212(NAD 83)
 JV7210
 JV7210                          SUPERSEDED SURVEY CONTROL
 JV7210
 JV7210  NAD 83(2007)-  39 24 28.80052(N)    077 07 36.83754(W) AD(2002.00) 0
 JV7210  ELLIP H (02/10/07)  189.151  (m)                       GP(2002.00)    
 JV7210  ELLIP H (08/30/02)  189.099  (m)                       GP(       ) 4 2
 JV7210  NAD 83(1991)-  39 24 28.80130(N)    077 07 36.83858(W) AD(       ) 1
 JV7210  ELLIP H (02/09/94)  189.079  (m)                       GP(       ) 4 1
 JV7210  NAVD 88 (02/09/94)  221.1    (m)  GEOID93  model used  GPS OBS        
 JV7210
 JV7210.Superseded values are not recommended for survey control.
 JV7210
 JV7210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7210.See file dsdata.pdf to determine how the superseded data were derived.
 JV7210
 JV7210_MARKER: DD = SURVEY DISK
 JV7210_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7210_STAMPING: FALL 1993
 JV7210_MARK LOGO: MD-021
 JV7210_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV7210_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7210+STABILITY: SURFACE MOTION
 JV7210_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7210+SATELLITE: SATELLITE OBSERVATIONS - November 27, 1995
 JV7210
 JV7210  HISTORY     - Date     Condition        Report By
 JV7210  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7210  HISTORY     - 19951127 GOOD             MCCRON
 JV7210
 JV7210                          STATION DESCRIPTION
 JV7210
 JV7210'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7210'FROM THE INTERSECTION OF MD RTE 27 AND I-70 IN MT. AIRY, MD, GO NORTH
 JV7210'ON RTE 27 4.5 MILES (7.2 KM) TO GILLIS FALLS ROAD. RIGHT ON GILLIS
 JV7210'FALLS ROAD 0.1 MILES (0.2 KM) TO STATION ON RIGHT. STATION IS 2 FEET
 JV7210'(0.6 M) SOUTH OF THE EDGE OF PAVEMENT AND 107 FEET (32.6 M) SOUTHEAST
 JV7210'FROM THE CENTERLINE OF A ROAD. STATION IS A BRASS DISK SET IN THE TOP
 JV7210'OF AN 8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7210
 JV7210                          STATION RECOVERY (1995)
 JV7210
 JV7210'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV7210'STATION IS LOCATED ABOUT 4 MI (6.4 KM) NORTH OF MOUNT AIRY AND ABOUT
 JV7210'13.5 MI (21.7 KM) SOUTHWEST OF WESTMINSTER. TO REACH STATION FROM THE
 JV7210'I-70 OVERPASS BRIDGE OVER MD ROUTE 27 (RIDGE ROAD) GO NORTH ON MD
 JV7210'ROUTE 27 FOR 4.5 MI (7.2 KM) TO THE INTERSECTION WITH GILLIS FALLS
 JV7210'ROAD. TURN RIGHT ON GILLIS FALLS ROAD AND GO 0.1 MI (0.2 KM) TO THE
 JV7210'INTERSECTION WITH YORKTOWN ROAD AND THE STATION ON THE RIGHT. STATION
 JV7210'MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 JV7210'WITH THE GROUND. IT IS 107 FT (32.6 M) EAST OF THE CENTERLINE OF
 JV7210'YORKTOWN ROAD AND 2.0 FT (0.6 M) SOUTH OF THE EDGE OF PAVE OF GILLIS
 JV7210'FALLS ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1488 ***********************************************************************
 JV1488  DESIGNATION -  FALLS
 JV1488  PID         -  JV1488
 JV1488  STATE/COUNTY-  MD/BALTIMORE
 JV1488  COUNTRY     -  US
 JV1488  USGS QUAD   -  NEW FREEDOM (2019)
 JV1488
 JV1488                         *CURRENT SURVEY CONTROL
 JV1488  ______________________________________________________________________
 JV1488* NAD 83(1991) POSITION- 39 37 29.88991(N) 076 40 04.08032(W)   ADJUSTED
 JV1488* NAVD 88 ORTHO HEIGHT -   194.093 (meters)      636.79  (feet) ADJUSTED
 JV1488  ______________________________________________________________________
 JV1488  GEOID HEIGHT    -        -32.276 (meters)                     GEOID18
 JV1488  LAPLACE CORR    -         -2.57  (seconds)                    DEFLEC18
 JV1488  DYNAMIC HEIGHT  -        193.997 (meters)      636.47  (feet) COMP
 JV1488  MODELED GRAVITY -    980,125.1   (mgal)                       NAVD 88
 JV1488
 JV1488  HORZ ORDER      -  SECOND
 JV1488  VERT ORDER      -  SECOND    CLASS 0
 JV1488
 JV1488.The horizontal coordinates were established by classical geodetic methods
 JV1488.and adjusted by the National Geodetic Survey in January 1992.
 JV1488
 JV1488.The orthometric height was determined by differential leveling and
 JV1488.adjusted by the NATIONAL GEODETIC SURVEY
 JV1488.in June 1991.
 JV1488
 JV1488.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1488.GEOID18 height accuracy estimate available here.
 JV1488
 JV1488.Click photographs - Photos may exist for this station.
 JV1488
 JV1488.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1488
 JV1488.The dynamic height is computed by dividing the NAVD 88
 JV1488.geopotential number by the normal gravity value computed on the
 JV1488.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1488.degrees latitude (g = 980.6199 gals.).
 JV1488
 JV1488.The modeled gravity was interpolated from observed gravity values.
 JV1488
 JV1488. The following values were computed from the NAD 83(1991) position.
 JV1488
 JV1488;                    North         East     Units Scale Factor Converg.
 JV1488;SPC MD       -   217,441.996   428,523.356   MT  1.00003530   +0 12 30.6
 JV1488;SPC MD       -   713,390.95  1,405,913.71   sFT  1.00003530   +0 12 30.6
 JV1488;UTM  18      - 4,387,462.719   356,857.512   MT  0.99985227   -1 03 49.8
 JV1488
 JV1488!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1488!SPC MD       -   0.99997461  x   1.00003530  =   1.00000991
 JV1488!UTM  18      -   0.99997461  x   0.99985227  =   0.99982689
 JV1488
 JV1488:                Primary Azimuth Mark                     Grid Az
 JV1488:SPC MD       -  FALLS AZ MK                              156 02 58.5
 JV1488:UTM  18      -  FALLS AZ MK                              157 19 18.9
 JV1488
 JV1488_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5685787462(NAD 83)
 JV1488
 JV1488|---------------------------------------------------------------------|
 JV1488| PID    Reference Object                     Distance      Geod. Az  |
 JV1488|                                                           dddmmss.s |
 JV1488| JV1489 FALLS RM 1                            9.212 METERS 01623     |
 JV1488| JV1486 FALLS AZ MK                         APPROX. 1.3 KM 1561529.1 |
 JV1488| JV1487 FALLS RM 2                           10.600 METERS 15829     |
 JV1488| JV6111 HEREFORD HIGH SCHOOL TANK           APPROX. 3.0 KM 1645122.5 |
 JV1488|---------------------------------------------------------------------|
 JV1488
 JV1488                          SUPERSEDED SURVEY CONTROL
 JV1488
 JV1488  NAD 83(1986)-  39 37 29.88517(N)    076 40 04.08324(W) AD(       ) 2
 JV1488  NAD 83(1986)-  39 37 29.84909(N)    076 40 04.09018(W) AD(       ) 2
 JV1488  NAD 27      -  39 37 29.50400(N)    076 40 05.18660(W) AD(       ) 2
 JV1488  NGVD 29             194.31   (m)          637.5    (f) LEVELING    3  
 JV1488  NGVD 29 (11/26/84)  194.309  (m)          637.50   (f) ADJUSTED    2 0
 JV1488
 JV1488.Superseded values are not recommended for survey control.
 JV1488
 JV1488.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1488.See file dsdata.pdf to determine how the superseded data were derived.
 JV1488
 JV1488_MARKER: DS = TRIANGULATION STATION DISK
 JV1488_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1488_STAMPING: FALLS 1959
 JV1488_MARK LOGO: CGS
 JV1488_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1488+STABILITY: SURFACE MOTION
 JV1488
 JV1488  HISTORY     - Date     Condition        Report By
 JV1488  HISTORY     - 1959     MONUMENTED       CGS
 JV1488  HISTORY     - 1959     GOOD             CGS
 JV1488  HISTORY     - 1961     GOOD             LOCENG
 JV1488  HISTORY     - 19840925 GOOD             NGS
 JV1488
 JV1488                          STATION DESCRIPTION
 JV1488
 JV1488'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV1488'STATION IS LOCATED ON TOP OF HIGH CUT EMBANKMENT ALONG THE EAST
 JV1488'SIDE OF NEW U.S. HIGHWAY NO. 111 NOW UNDER CONSTRUCTION, ABOUT
 JV1488'1/2 MILE SOUTHWEST OF WEISBURG AND ABOUT 3 MILES NORTH OF
 JV1488'HEREFORD.  STATION, A STANDARD DISK SET IN A 12X12 INCH CONCRETE
 JV1488'MONUMENT AND STAMPED FALLS, IS 19 FEET NORTHEAST OF A 36 INCH
 JV1488'STUMP, 21 FEET NORTHEAST OF THE EDGE OF CUT EMBANKMENT AND 2.5
 JV1488'FEET EAST OF WITNESS MARKER.  THE MARK IS SET FLUSH WITH THE
 JV1488'GROUND.
 JV1488'
 JV1488'TO REACH FROM THE OVERPASS AT THE JUNCTION OF U.S. HIGHWAY NO. 111
 JV1488'AND STATE HIGHWAY NO. 137 ABOUT 0.35 MILE WEST OF HEREFORD, GO
 JV1488'NORTHERLY ON U.S. HIGHWAY NO. 111 FOR 1.3 MILES TO CONSTRUCTION
 JV1488'OF NEW HIGHWAY.  CONTINUE NORTHERLY ON NEW HIGHWAY U.S. 111
 JV1488'FOR 0.55 MILE TO NORTH END OF BRIDGE AND AZIMUTH MARK AS
 JV1488'DESCRIBED.  CONTINUE NORTHERLY ON NEW U.S. HIGHWAY NO. 111 FOR
 JV1488'0.9 MILE TO STATION ON RIGHT (EAST) SIDE OF HIGHWAY AS
 JV1488'DESCRIBED.
 JV1488'
 JV1488'REFERENCE MARK NO. 1, A STANDARD DISK SET IN A 12X12 INCH
 JV1488'CONCRETE MONUMENT AND STAMPED FALLS NO 1 1959 IS 40 FEET
 JV1488'NORTHEAST OF CUT EMBANKMENT, 16 FEET SOUTHEAST OF A LARGE
 JV1488'STUMP AND 3 FEET SOUTH OF WITNESS MARKER.  THE MARK IS FLUSH
 JV1488'WITH THE GROUND.
 JV1488'
 JV1488'REFERENCE MARK NO. 2, A STANDARD DISK SET IN A 12X12 INCH
 JV1488'CONCRETE MONUMENT AND STAMPED FALLS NO 2 1959, IS 22 FEET
 JV1488'NORTHEAST OF CUT EMBANKMENT 18-1/2 FEET WEST OF AN 18 INCH
 JV1488'STUMP AND 1.7 FEET EAST OF WITNESS MARKER.  THE MARK PROJECTS
 JV1488'3 INCHES.
 JV1488'
 JV1488'AZIMUTH MARK, A STANDARD DISK SET IN A DRILLHOLE IN A CONCRETE
 JV1488'CAT-WALK OF BRIDGE AND STAMPED FALLS 1959 IS NEAR THE NORTHWEST
 JV1488'CORNER OF BRIDGE, 18-1/2 FEET WEST OF THE CENTERLINE OF BRIDGE,
 JV1488'3.9 FEET SOUTH OF NORTH END OF BRIDGE.  1.2 FEET EAST OF BRIDGE
 JV1488'WALL AND 10 FEET NORTH OF EXTENSION PLATE.  THE MARK IS FLUSH
 JV1488'WITH THE CONCRETE.
 JV1488'
 JV1488'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV1488
 JV1488                          STATION RECOVERY (1959)
 JV1488
 JV1488'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV1488'3.1 MI NW FROM HEREFORD.
 JV1488'0.45 MILE WEST ALONG STATE HIGHWAY 137 FROM ITS JUNCTION WITH
 JV1488'STATE HIGHWAY 45 AT HEREFORD, THENCE 2.65 MILES NORTH-NORTHEAST
 JV1488'ALONG NEW U.S. HIGHWAY 111, ABOUT 0.8 MILE NORTH OF THE LARGE
 JV1488'NEW BRIDGE OVER GUNPOWDER FALLS, ON THE TOP OF A HIGH CUT BANK,
 JV1488'ABOUT 60 FEET EAST OF THE CENTER LINE OF THE NORTH BOUND LANE OF
 JV1488'THE HIGHWAY (UNDER CONSTRUCTION IN 1959), 19 FEET NORTHEAST OF
 JV1488'A STUMP, 20 FEET NORTHEAST OF THE EDGE OF THE CUT EMBANKMENT,
 JV1488'ABOUT 20 FEET ABOVE THE HIGHWAY, 2 1/2 FEET EAST OF A METAL
 JV1488'WITNESS MARKER AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV1488'THE GROUND.
 JV1488
 JV1488                          STATION RECOVERY (1961)
 JV1488
 JV1488'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1961
 JV1488'RECOVERED BY EC BALLING MAPS, INC.
 JV1488'
 JV1488'STATION AND AZIMUTH MARK FOUND IN GOOD CONDITION.
 JV1488
 JV1488                          STATION RECOVERY (1984)
 JV1488
 JV1488'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 JV1488'THE STATION AND BOTH REFERENCE MARKS WERE
 JV1488'RECOVERED AND FOUND IN GOOD CONDITION AS DESCRIBED IN THE MOST RECENT
 JV1488'INFORMATION AVAILABLE.  THE AZIMUTH MARK WAS DESTROYED BY CONSTRUCTION
 JV1488'AND A NEW AZIMUTH MARK WAS SET, HOWEVER NO HORIZONTAL OBSERVATIONS
 JV1488'COULD BE TAKEN TO THE OLD NOR THE NEW AZIMUTH MARK AT THIS DATE.  THE
 JV1488'NEW AZIMUTH MARK HAS ELEVATIONS ON IT ONLY.  SEE THE DESCRIPTION FOR
 JV1488'FALLS AZ MK 2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6555 ***********************************************************************
 JV6555  DESIGNATION -  FALLS AZ MK RESET
 JV6555  PID         -  JV6555
 JV6555  STATE/COUNTY-  MD/BALTIMORE
 JV6555  COUNTRY     -  US
 JV6555  USGS QUAD   -  HEREFORD (2016)
 JV6555
 JV6555                         *CURRENT SURVEY CONTROL
 JV6555  ______________________________________________________________________
 JV6555* NAD 83(1986) POSITION- 39 36 50.00   (N) 076 39 41.45   (W)   HD_HELD1
 JV6555* NAVD 88 ORTHO HEIGHT -   127.32  (meters)      417.7   (feet) RESET
 JV6555  ______________________________________________________________________
 JV6555  GEOID HEIGHT    -        -32.285 (meters)                     GEOID18
 JV6555  VERT ORDER      -  THIRD
 JV6555
 JV6555.The horizontal coordinates were determined by differentially corrected
 JV6555.hand held GPS observations or other comparable positioning techniques
 JV6555.and have an estimated accuracy of +/- 3 meters.
 JV6555
 JV6555.The orthometric height was computed from unverified reset data.
 JV6555
 JV6555.No vertical observational check was made to the station.
 JV6555
 JV6555.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6555.GEOID18 height accuracy estimate available here.
 JV6555
 JV6555.Click photographs - Photos may exist for this station.
 JV6555
 JV6555;                    North         East    Units  Estimated Accuracy
 JV6555;SPC MD       -   216,213.7     429,067.7     MT  (+/- 3 meters HH1 GPS) 
 JV6555
 JV6555_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5737486222(NAD 83)
 JV6555
 JV6555                          SUPERSEDED SURVEY CONTROL
 JV6555
 JV6555  NGVD 29 (11/18/05)  127.54   (m)          418.4    (f) RESET       3  
 JV6555
 JV6555.Superseded values are not recommended for survey control.
 JV6555
 JV6555.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6555.See file dsdata.pdf to determine how the superseded data were derived.
 JV6555
 JV6555_MARKER: DV = VERTICAL CONTROL DISK
 JV6555_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV6555_SP_SET: PARAPET WALL
 JV6555_STAMPING: FALLS AZI RESET 1984
 JV6555_MARK LOGO: NGS
 JV6555_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6555
 JV6555  HISTORY     - Date     Condition        Report By
 JV6555  HISTORY     - 1984     MONUMENTED       NGS
 JV6555
 JV6555                          STATION DESCRIPTION
 JV6555
 JV6555'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6555'3.5 KM (2.15 MI) NW FROM HEREFORD.
 JV6555'2.95 KM (1.85 MI) NORTH ALONG INTERSTATE HIGHWAY 83 FROM EXIT NUMBER
 JV6555'27 IN HEREFORD, 5.9 M (19.4 FT) WEST FROM THE CENTER OF THE NORTH
 JV6555'BOUND LANE OF INTERSTATE HIGHWAY 83, 0.2 M (0.7 FT) SOUTH FROM THE
 JV6555'NORTH END OF THE PARAPET WALL ALONG THE WEST SIDE OF THE BRIDGE FOR
 JV6555'THE NORTH BOUND LANE OF INTERSTATE HIGHWAY 83 AND 4.3 M (14.1 FT)
 JV6555'NORTH FROM THE MOST NORTH EXPANSION JOINT IN THE BRIDGE.
 JV6555'THE MARK IS 0.9 M ABOVE INTERSTATE HIGHWAY 83.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1489 ***********************************************************************
 JV1489  DESIGNATION -  FALLS RM 1
 JV1489  PID         -  JV1489
 JV1489  STATE/COUNTY-  MD/BALTIMORE
 JV1489  COUNTRY     -  US
 JV1489  USGS QUAD   -  NEW FREEDOM (2019)
 JV1489
 JV1489                         *CURRENT SURVEY CONTROL
 JV1489  ______________________________________________________________________
 JV1489* NAD 83(1986) POSITION- 39 37 30.18   (N) 076 40 03.97   (W)   HD_HELD1
 JV1489* NAVD 88 ORTHO HEIGHT -   194.721 (meters)      638.85  (feet) ADJUSTED
 JV1489  ______________________________________________________________________
 JV1489  GEOID HEIGHT    -        -32.276 (meters)                     GEOID18
 JV1489  DYNAMIC HEIGHT  -        194.625 (meters)      638.53  (feet) COMP
 JV1489  MODELED GRAVITY -    980,125.0   (mgal)                       NAVD 88
 JV1489
 JV1489  VERT ORDER      -  SECOND    CLASS 0
 JV1489
 JV1489.The horizontal coordinates were determined by differentially corrected
 JV1489.hand held GPS observations or other comparable positioning techniques
 JV1489.and have an estimated accuracy of +/- 3 meters.
 JV1489
 JV1489.The orthometric height was determined by differential leveling and
 JV1489.adjusted by the NATIONAL GEODETIC SURVEY
 JV1489.in June 1991.
 JV1489
 JV1489.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1489.GEOID18 height accuracy estimate available here.
 JV1489
 JV1489.Click photographs - Photos may exist for this station.
 JV1489
 JV1489.The dynamic height is computed by dividing the NAVD 88
 JV1489.geopotential number by the normal gravity value computed on the
 JV1489.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1489.degrees latitude (g = 980.6199 gals.).
 JV1489
 JV1489.The modeled gravity was interpolated from observed gravity values.
 JV1489
 JV1489;                    North         East    Units  Estimated Accuracy
 JV1489;SPC MD       -   217,451.0     428,526.0     MT  (+/- 3 meters HH1 GPS) 
 JV1489
 JV1489_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5686087471(NAD 83)
 JV1489
 JV1489                          SUPERSEDED SURVEY CONTROL
 JV1489
 JV1489  NGVD 29 (11/26/84)  194.937  (m)          639.56   (f) ADJUSTED    2 0
 JV1489
 JV1489.Superseded values are not recommended for survey control.
 JV1489
 JV1489.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1489.See file dsdata.pdf to determine how the superseded data were derived.
 JV1489
 JV1489_MARKER: DR = REFERENCE MARK DISK
 JV1489_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1489_STAMPING: FALLS NO 1 1959
 JV1489_MARK LOGO: CGS
 JV1489_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1489+STABILITY: SURFACE MOTION
 JV1489
 JV1489  HISTORY     - Date     Condition        Report By
 JV1489  HISTORY     - 1959     MONUMENTED       CGS
 JV1489
 JV1489                          STATION DESCRIPTION
 JV1489
 JV1489'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1489'3.1 MI NW FROM HEREFORD.
 JV1489'0.45 MILE WEST ALONG STATE HIGHWAY 137 FROM ITS JUNCTION WITH
 JV1489'STATE HIGHWAY 45 AT HEREFORD, THENCE 2.65 MILES NORTH-NORTHEAST
 JV1489'ALONG NEW U.S. HIGHWAY 111, ON THE TOP OF A CUT BANK, ABOUT
 JV1489'0.8 MILE NORTH OF THE LARGE BRIDGE OVER GUNPOWDER FALLS, 30.2
 JV1489'FEET NORTH OF THE STATION, 40 FEET NORTHEAST OF THE EDGE OF
 JV1489'THE CUT EMBANKMENT, 16 FEET SOUTHEAST OF A LARGE STUMP, 3 FEET
 JV1489'SOUTH OF A WITNESS MARKER AND SET IN THE TOP OF A CONCRETE POST
 JV1489'FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1487 ***********************************************************************
 JV1487  DESIGNATION -  FALLS RM 2
 JV1487  PID         -  JV1487
 JV1487  STATE/COUNTY-  MD/BALTIMORE
 JV1487  COUNTRY     -  US
 JV1487  USGS QUAD   -  NEW FREEDOM (2019)
 JV1487
 JV1487                         *CURRENT SURVEY CONTROL
 JV1487  ______________________________________________________________________
 JV1487* NAD 83(1986) POSITION- 39 37 29.57   (N) 076 40 03.92   (W)   HD_HELD1
 JV1487* NAVD 88 ORTHO HEIGHT -   193.698 (meters)      635.49  (feet) ADJUSTED
 JV1487  ______________________________________________________________________
 JV1487  GEOID HEIGHT    -        -32.276 (meters)                     GEOID18
 JV1487  DYNAMIC HEIGHT  -        193.602 (meters)      635.18  (feet) COMP
 JV1487  MODELED GRAVITY -    980,125.0   (mgal)                       NAVD 88
 JV1487
 JV1487  VERT ORDER      -  SECOND    CLASS 0
 JV1487
 JV1487.The horizontal coordinates were determined by differentially corrected
 JV1487.hand held GPS observations or other comparable positioning techniques
 JV1487.and have an estimated accuracy of +/- 3 meters.
 JV1487
 JV1487.The orthometric height was determined by differential leveling and
 JV1487.adjusted by the NATIONAL GEODETIC SURVEY
 JV1487.in June 1991.
 JV1487
 JV1487.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1487.GEOID18 height accuracy estimate available here.
 JV1487
 JV1487.Click photographs - Photos may exist for this station.
 JV1487
 JV1487.The dynamic height is computed by dividing the NAVD 88
 JV1487.geopotential number by the normal gravity value computed on the
 JV1487.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1487.degrees latitude (g = 980.6199 gals.).
 JV1487
 JV1487.The modeled gravity was interpolated from observed gravity values.
 JV1487
 JV1487;                    North         East    Units  Estimated Accuracy
 JV1487;SPC MD       -   217,432.1     428,527.2     MT  (+/- 3 meters HH1 GPS) 
 JV1487
 JV1487_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5686187452(NAD 83)
 JV1487
 JV1487                          SUPERSEDED SURVEY CONTROL
 JV1487
 JV1487  NGVD 29 (11/26/84)  193.913  (m)          636.20   (f) ADJUSTED    2 0
 JV1487
 JV1487.Superseded values are not recommended for survey control.
 JV1487
 JV1487.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1487.See file dsdata.pdf to determine how the superseded data were derived.
 JV1487
 JV1487_MARKER: DR = REFERENCE MARK DISK
 JV1487_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1487_STAMPING: FALLS NO 2 1959
 JV1487_MARK LOGO: CGS
 JV1487_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1487+STABILITY: SURFACE MOTION
 JV1487
 JV1487  HISTORY     - Date     Condition        Report By
 JV1487  HISTORY     - 1959     MONUMENTED       CGS
 JV1487
 JV1487                          STATION DESCRIPTION
 JV1487
 JV1487'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1487'3.1 MI NW FROM HEREFORD.
 JV1487'0.45 MILE WEST ALONG STATE HIGHWAY 137 FROM ITS JUNCTION WITH
 JV1487'STATE HIGHWAY 45 AT HEREFORD, THENCE 2.65 MILES NORTH-NORTHEAST
 JV1487'ALONG NEW U.S. HIGHWAY 111, ABOUT 0.8 MILE NORTH OF THE LARGE
 JV1487'BRIDGE OVER GUNPOWDER FALLS, ON THE TOP OF A HIGH CUT BANK, 34.8
 JV1487'FEET SOUTHEAST OF THE STATION, 22 FEET NORTHEAST OF THE EDGE
 JV1487'OF THE EMBANKMENT, 18 FEET WEST OF AN 18-INCH STUMP, 1.7 FEET
 JV1487'EAST OF A METAL WITNESS MARKER, SET IN THE TOP OF A CONCRETE POST
 JV1487'FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6752 ***********************************************************************
 JV6752  DESIGNATION -  FALLSMONT
 JV6752  PID         -  JV6752
 JV6752  STATE/COUNTY-  MD/HARFORD
 JV6752  COUNTRY     -  US
 JV6752  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6752
 JV6752                         *CURRENT SURVEY CONTROL
 JV6752  ______________________________________________________________________
 JV6752* NAD 83(2011) POSITION- 39 30 44.72837(N) 076 27 29.24527(W)   ADJUSTED
 JV6752* NAD 83(2011) ELLIP HT-    88.925 (meters)        (06/27/12)   ADJUSTED
 JV6752* NAD 83(2011) EPOCH   -  2010.00
 JV6752* NAVD 88 ORTHO HEIGHT -   121.6   (meters)      399.    (feet) VERTCON3
 JV6752  ______________________________________________________________________
 JV6752  GEOID HEIGHT    -        -32.649 (meters)                     GEOID18
 JV6752  NAD 83(2011) X  -  1,153,779.495 (meters)                     COMP
 JV6752  NAD 83(2011) Y  - -4,790,410.588 (meters)                     COMP
 JV6752  NAD 83(2011) Z  -  4,036,424.410 (meters)                     COMP
 JV6752  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 JV6752
 JV6752  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6752  Standards:
 JV6752         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6752            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6752  -------------------------------------------------------------------
 JV6752  NETWORK    2.05   6.23           0.75   0.86   3.18      0.48039348
 JV6752  -------------------------------------------------------------------
 JV6752  Click here for local accuracies and other accuracy information.
 JV6752
 JV6752.The horizontal coordinates were established by GPS observations
 JV6752.and adjusted by the National Geodetic Survey in June 2012.
 JV6752
 JV6752.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6752.been affixed to the stable North American tectonic plate. See 
 JV6752.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6752
 JV6752.The horizontal coordinates are valid at the epoch date displayed above
 JV6752.which is a decimal equivalence of Year/Month/Day.
 JV6752
 JV6752.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6752.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6752
 JV6752.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6752.GEOID18 height accuracy estimate available here.
 JV6752
 JV6752.Click photographs - Photos may exist for this station.
 JV6752
 JV6752.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6752
 JV6752.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6752
 JV6752.The ellipsoidal height was determined by GPS observations
 JV6752.and is referenced to NAD 83.
 JV6752
 JV6752. The following values were computed from the NAD 83(2011) position.
 JV6752
 JV6752;                    North         East     Units Scale Factor Converg.
 JV6752;SPC MD       -   205,032.670   446,600.598   MT  1.00001152   +0 20 24.4
 JV6752;SPC MD       -   672,678.02  1,465,222.13   sFT  1.00001152   +0 20 24.4
 JV6752;UTM  18      - 4,374,658.325   374,651.680   MT  0.99979345   -0 55 40.2
 JV6752
 JV6752!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6752!SPC MD       -   0.99998605  x   1.00001152  =   0.99999757
 JV6752!UTM  18      -   0.99998605  x   0.99979345  =   0.99977950
 JV6752
 JV6752_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7465174658(NAD 83)
 JV6752
 JV6752                          SUPERSEDED SURVEY CONTROL
 JV6752
 JV6752  NAD 83(2007)-  39 30 44.72850(N)    076 27 29.24610(W) AD(2002.00) 0
 JV6752  ELLIP H (02/10/07)   88.944  (m)                       GP(2002.00)    
 JV6752  ELLIP H (09/18/02)   88.947  (m)                       GP(       ) 4 2
 JV6752  NAD 83(1991)-  39 30 44.72887(N)    076 27 29.24474(W) AD(       ) 1
 JV6752  ELLIP H (01/27/92)   88.922  (m)                       GP(       ) 4 1
 JV6752  NAD 83(1986)-  39 30 44.72231(N)    076 27 29.25277(W) AD(       ) 1
 JV6752  NGVD 29 (06/18/91)  121.8    (m)  UNKNOWN  model used  GPS OBS        
 JV6752
 JV6752.Superseded values are not recommended for survey control.
 JV6752
 JV6752.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6752.See file dsdata.pdf to determine how the superseded data were derived.
 JV6752
 JV6752_MARKER: DD = SURVEY DISK
 JV6752_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6752_STAMPING: 52 FALLSMONT 1989
 JV6752_MARK LOGO: MD-025
 JV6752_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6752_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6752+STABILITY: SURFACE MOTION
 JV6752_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6752+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6752
 JV6752  HISTORY     - Date     Condition        Report By
 JV6752  HISTORY     - 1989     MONUMENTED       RDA
 JV6752
 JV6752                          STATION DESCRIPTION
 JV6752
 JV6752'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6752'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 5
 JV6752'MILES WEST OF BEL AIR.
 JV6752'TO REACH THE STATION FROM THE INTERSECTION FEDERAL HIGHWAY 1 AND STATE
 JV6752'HIGHWAY 152 PROCEED WEST ALONG HIGHWAY 152 4.15 MILES TO ITS
 JV6752'INTERSECTION WITH PLEASANTVILLE ROAD.  TURN LEFT AND PROCEED SOUTH
 JV6752'ALONG PLEASANTVILLE ROAD 1.5 MILES TO THE STATION ON THE LEFT.
 JV6752'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6752'ABOUT 1 INCH BELOW GROUND STAMPED 52 FALLSMONT 1989.  THE STATION IS
 JV6752'15.8 FEET EAST OF THE CENTERLINE OF PLEASANTVILLE ROAD, 79.7 FEET
 JV6752'SOUTH OF A 12 INCH SASSAFRASS TREE, AND 463.0 FEET NORTH OF THE TREE
 JV6752'LINE OF GUNPOWDER STATE PARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6753 ***********************************************************************
 JV6753  DESIGNATION -  FALLSMONT AZ MK
 JV6753  PID         -  JV6753
 JV6753  STATE/COUNTY-  MD/HARFORD
 JV6753  COUNTRY     -  US
 JV6753  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6753
 JV6753                         *CURRENT SURVEY CONTROL
 JV6753  ______________________________________________________________________
 JV6753* NAD 83(1991) POSITION- 39 30 34.92589(N) 076 27 33.80261(W)   NO CHECK
 JV6753* NAVD 88 ORTHO HEIGHT -   109.    (meters)      358.    (feet) VERTCON3
 JV6753  ______________________________________________________________________
 JV6753  GEOID HEIGHT    -        -32.652 (meters)                     GEOID18
 JV6753  LAPLACE CORR    -         -2.61  (seconds)                    DEFLEC18
 JV6753  HORZ ORDER      -  SECOND
 JV6753
 JV6753.The horizontal coordinates were established by classical geodetic methods
 JV6753.and adjusted by the National Geodetic Survey in January 1992.
 JV6753
 JV6753.No horizontal observational check was made to the station.
 JV6753
 JV6753.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6753.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6753
 JV6753.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6753.GEOID18 height accuracy estimate available here.
 JV6753
 JV6753.Click photographs - Photos may exist for this station.
 JV6753
 JV6753.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6753
 JV6753. The following values were computed from the NAD 83(1991) position.
 JV6753
 JV6753;                    North         East     Units Scale Factor Converg.
 JV6753;SPC MD       -   204,729.714   446,493.522   MT  1.00001099   +0 20 21.5
 JV6753;SPC MD       -   671,684.07  1,464,870.83   sFT  1.00001099   +0 20 21.5
 JV6753;UTM  18      - 4,374,357.878   374,537.951   MT  0.99979380   -0 55 43.0
 JV6753
 JV6753!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6753!SPC MD       -   0.99998801  x   1.00001099  =   0.99999900
 JV6753!UTM  18      -   0.99998801  x   0.99979380  =   0.99978181
 JV6753
 JV6753_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7453774357(NAD 83)
 JV6753
 JV6753                          SUPERSEDED SURVEY CONTROL
 JV6753
 JV6753  NAD 83(1986)-  39 30 34.91937(N)    076 27 33.81076(W) AD(       ) 2
 JV6753  NGVD 29 (06/18/91)  109.     (m)          358.     (f) VERT ANG       
 JV6753
 JV6753.Superseded values are not recommended for survey control.
 JV6753
 JV6753.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6753.See file dsdata.pdf to determine how the superseded data were derived.
 JV6753
 JV6753_MARKER: DZ = AZIMUTH MARK DISK
 JV6753_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6753_STAMPING: 52 FALLSMONT 1989
 JV6753_MARK LOGO: MD-025
 JV6753_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6753_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6753+STABILITY: SURFACE MOTION
 JV6753_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6753+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6753
 JV6753  HISTORY     - Date     Condition        Report By
 JV6753  HISTORY     - 1989     MONUMENTED       RDA
 JV6753
 JV6753                          STATION DESCRIPTION
 JV6753
 JV6753'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6753'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTH ALONG
 JV6753'PLEASANTVILLE ROAD 0.2 MILES TO THE MARK ON THE RIGHT.
 JV6753'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6753'ABOUT 1 INCH BELOW GROUND STAMPED 52 FALLSMONT 1989.  THE MARK IS 15.3
 JV6753'FEET NORTHWEST OF THE CENTERLINE OF PLEASANTVILLE ROAD, 25.0 FEET
 JV6753'NORTHEAST OF A 30 INCH OAK TREE, 138.0 FEET SOUTHWEST OF THE NORTH END
 JV6753'OF GUARD ROAD, AND 1054.26 FEET FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6291 ***********************************************************************
 JV6291  DESIGNATION -  FALLSTON
 JV6291  PID         -  JV6291
 JV6291  STATE/COUNTY-  MD/HARFORD
 JV6291  COUNTRY     -  US
 JV6291  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6291
 JV6291                         *CURRENT SURVEY CONTROL
 JV6291  ______________________________________________________________________
 JV6291* NAD 83(2011) POSITION- 39 31 11.32051(N) 076 24 51.27369(W)   ADJUSTED
 JV6291* NAD 83(2011) ELLIP HT-   106.244 (meters)        (06/27/12)   ADJUSTED
 JV6291* NAD 83(2011) EPOCH   -  2010.00
 JV6291* NAVD 88 ORTHO HEIGHT -   138.925 (meters)      455.79  (feet) ADJUSTED
 JV6291  ______________________________________________________________________
 JV6291  GEOID HEIGHT    -        -32.697 (meters)                     GEOID18
 JV6291  NAD 83(2011) X  -  1,157,328.536 (meters)                     COMP
 JV6291  NAD 83(2011) Y  - -4,789,031.288 (meters)                     COMP
 JV6291  NAD 83(2011) Z  -  4,037,068.111 (meters)                     COMP
 JV6291  LAPLACE CORR    -         -3.00  (seconds)                    DEFLEC18
 JV6291  DYNAMIC HEIGHT  -        138.854 (meters)      455.56  (feet) COMP
 JV6291  MODELED GRAVITY -    980,113.5   (mgal)                       NAVD 88
 JV6291
 JV6291  VERT ORDER      -  FIRST     CLASS II
 JV6291
 JV6291  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6291  Standards:
 JV6291         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6291            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6291  -------------------------------------------------------------------
 JV6291  NETWORK    0.89   1.41           0.40   0.32   0.72     -0.02830582
 JV6291  -------------------------------------------------------------------
 JV6291  Click here for local accuracies and other accuracy information.
 JV6291
 JV6291.The horizontal coordinates were established by GPS observations
 JV6291.and adjusted by the National Geodetic Survey in June 2012.
 JV6291
 JV6291.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6291.been affixed to the stable North American tectonic plate. See 
 JV6291.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6291
 JV6291.The horizontal coordinates are valid at the epoch date displayed above
 JV6291.which is a decimal equivalence of Year/Month/Day.
 JV6291
 JV6291.The orthometric height was determined by differential leveling and
 JV6291.adjusted by the NATIONAL GEODETIC SURVEY
 JV6291.in June 1991.
 JV6291
 JV6291.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6291.GEOID18 height accuracy estimate available here.
 JV6291
 JV6291.Click photographs - Photos may exist for this station.
 JV6291
 JV6291.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6291
 JV6291.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6291
 JV6291.The ellipsoidal height was determined by GPS observations
 JV6291.and is referenced to NAD 83.
 JV6291
 JV6291.The dynamic height is computed by dividing the NAVD 88
 JV6291.geopotential number by the normal gravity value computed on the
 JV6291.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6291.degrees latitude (g = 980.6199 gals.).
 JV6291
 JV6291.The modeled gravity was interpolated from observed gravity values.
 JV6291
 JV6291. The following values were computed from the NAD 83(2011) position.
 JV6291
 JV6291;                    North         East     Units Scale Factor Converg.
 JV6291;SPC MD       -   205,876.082   450,368.989   MT  1.00001296   +0 22 03.5
 JV6291;SPC MD       -   675,445.11  1,477,585.59   sFT  1.00001296   +0 22 03.5
 JV6291;UTM  18      - 4,375,417.981   378,436.960   MT  0.99978194   -0 54 00.2
 JV6291
 JV6291!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6291!SPC MD       -   0.99998333  x   1.00001296  =   0.99999629
 JV6291!UTM  18      -   0.99998333  x   0.99978194  =   0.99976528
 JV6291
 JV6291_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7843675417(NAD 83)
 JV6291
 JV6291|---------------------------------------------------------------------|
 JV6291| PID    Reference Object                     Distance      Geod. Az  |
 JV6291|                                                           dddmmss.s |
 JV6291| JV6325 FALLSTON AZ MK                      398.439 METERS 00047     |
 JV6291|---------------------------------------------------------------------|
 JV6291
 JV6291                          SUPERSEDED SURVEY CONTROL
 JV6291
 JV6291  NAD 83(2007)-  39 31 11.32075(N)    076 24 51.27402(W) AD(2002.00) 0
 JV6291  ELLIP H (02/10/07)  106.258  (m)                       GP(2002.00)    
 JV6291  ELLIP H (08/30/02)  106.262  (m)                       GP(       ) 4 2
 JV6291  ELLIP H (03/31/00)  106.248  (m)                       GP(       ) 3 1
 JV6291  NAD 83(1991)-  39 31 11.32126(N)    076 24 51.27251(W) AD(       ) 1
 JV6291  ELLIP H (01/27/92)  106.209  (m)                       GP(       ) 4 1
 JV6291  NAD 83(1986)-  39 31 11.31485(N)    076 24 51.28024(W) AD(       ) 1
 JV6291  NAVD 88             138.93   (m)          455.8    (f) LEVELING    3  
 JV6291  NGVD 29             139.16   (m)          456.6    (f) LEVELING    3  
 JV6291
 JV6291.Superseded values are not recommended for survey control.
 JV6291
 JV6291.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6291.See file dsdata.pdf to determine how the superseded data were derived.
 JV6291
 JV6291_MARKER: DD = SURVEY DISK
 JV6291_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6291_STAMPING: 51 FALLSTON 1989
 JV6291_MARK LOGO: MD-025
 JV6291_PROJECTION: RECESSED 3 CENTIMETERS
 JV6291_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6291_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6291+STABILITY: SURFACE MOTION
 JV6291_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6291+SATELLITE: SATELLITE OBSERVATIONS - November 12, 2018
 JV6291
 JV6291  HISTORY     - Date     Condition        Report By
 JV6291  HISTORY     - 1989     MONUMENTED       RDA
 JV6291  HISTORY     - 19931209 GOOD             GEOMET
 JV6291  HISTORY     - 19970615 GOOD             MD-005
 JV6291  HISTORY     - 20020217 GOOD             USPSQD
 JV6291  HISTORY     - 20130220 GOOD             GPSSS
 JV6291  HISTORY     - 20130520 GOOD             GPSSS
 JV6291  HISTORY     - 20181112 GOOD             DEWDAV
 JV6291
 JV6291                          STATION DESCRIPTION
 JV6291
 JV6291'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6291'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 3
 JV6291'MILES WEST OF THE VILLAGE OF BEL AIR ON THE GROUNDS OF FALLSTON HIGH
 JV6291'SCHOOL.  TO REACH THE STATION FROM THE INTERSECTION OF FEDERAL
 JV6291'HIGHWAY 1 AND STATE HIGHWAY 152 PROCEED NORTHWEST ALONG HIGHWAY 152
 JV6291'2.2 MILES TO THE STATION ON THE RIGHT.  THE STATION IS A STANDARD
 JV6291'HARFORD COUNTY STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND
 JV6291'STAMPED 51 FALLSTON 1989.  THE STATION IS 35.6 FEET SOUTH OF THE
 JV6291'SOUTHWEST CORNER OF THE FALLSTON HIGH SCHOOL SIGN, 71.1 FEET
 JV6291'NORTHWEST OF A STEET LAMP POST, 55.8 FEET NORTHEAST OF THE CENTERLINE
 JV6291'OF THE TURNING LANE OF OLD FALLSTON ROAD.
 JV6291
 JV6291                          STATION RECOVERY (1993)
 JV6291
 JV6291'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6291'RECOVERED IN GOOD CONDITION.
 JV6291
 JV6291                          STATION RECOVERY (1997)
 JV6291
 JV6291'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV6291'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) RECOVERED
 JV6291'AS DESCRIBED.
 JV6291
 JV6291                          STATION RECOVERY (2002)
 JV6291
 JV6291'RECOVERY NOTE BY US POWER SQUADRON 2002 (DG)
 JV6291'FALLSTON ROAD BECOMES CARRS MILL ROAD.
 JV6291
 JV6291                          STATION RECOVERY (2013)
 JV6291
 JV6291'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 JV6291'RECOVERED BY MIKE BUTLER, DEWEY LILLY AND MIKE ESTES OF NORTHERN BAY
 JV6291'LAND PLANNING, ENGINEERING AND SURVEYING CORP.
 JV6291
 JV6291                          STATION RECOVERY (2013)
 JV6291
 JV6291'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 JV6291'RECOVERED BY MIKE BUTLER AND DEWEY LILLY OF NORTHERN BAY SURVEYS.
 JV6291'REFERENCED SIGN IS THE ONE HIDDEN BY BUSHES, NOT THE NEW SIGN.
 JV6291
 JV6291                          STATION RECOVERY (2018)
 JV6291
 JV6291'RECOVERY NOTE BY DEWBERRY DAVIS 2018 (GDS)
 JV6291'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6325 ***********************************************************************
 JV6325  DESIGNATION -  FALLSTON AZ MK
 JV6325  PID         -  JV6325
 JV6325  STATE/COUNTY-  MD/HARFORD
 JV6325  COUNTRY     -  US
 JV6325  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6325
 JV6325                         *CURRENT SURVEY CONTROL
 JV6325  ______________________________________________________________________
 JV6325* NAD 83(2011) POSITION- 39 31 24.23868(N) 076 24 51.04398(W)   ADJUSTED
 JV6325* NAD 83(2011) ELLIP HT-   109.048 (meters)        (06/27/12)   ADJUSTED
 JV6325* NAD 83(2011) EPOCH   -  2010.00
 JV6325* NAVD 88 ORTHO HEIGHT -   141.726 (meters)      464.98  (feet) ADJUSTED
 JV6325  ______________________________________________________________________
 JV6325  GEOID HEIGHT    -        -32.692 (meters)                     GEOID18
 JV6325  NAD 83(2011) X  -  1,157,274.821 (meters)                     COMP
 JV6325  NAD 83(2011) Y  - -4,788,785.660 (meters)                     COMP
 JV6325  NAD 83(2011) Z  -  4,037,377.222 (meters)                     COMP
 JV6325  LAPLACE CORR    -         -3.02  (seconds)                    DEFLEC18
 JV6325  DYNAMIC HEIGHT  -        141.654 (meters)      464.74  (feet) COMP
 JV6325  MODELED GRAVITY -    980,114.1   (mgal)                       NAVD 88
 JV6325
 JV6325  VERT ORDER      -  FIRST     CLASS II
 JV6325
 JV6325  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6325  Standards:
 JV6325         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6325            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6325  -------------------------------------------------------------------
 JV6325  NETWORK    1.28   2.63           0.52   0.53   1.34     -0.03809077
 JV6325  -------------------------------------------------------------------
 JV6325  Click here for local accuracies and other accuracy information.
 JV6325
 JV6325.The horizontal coordinates were established by GPS observations
 JV6325.and adjusted by the National Geodetic Survey in June 2012.
 JV6325
 JV6325.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6325.been affixed to the stable North American tectonic plate. See 
 JV6325.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6325
 JV6325.The horizontal coordinates are valid at the epoch date displayed above
 JV6325.which is a decimal equivalence of Year/Month/Day.
 JV6325
 JV6325.The orthometric height was determined by differential leveling and
 JV6325.adjusted by the NATIONAL GEODETIC SURVEY
 JV6325.in June 1991.
 JV6325
 JV6325.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6325.GEOID18 height accuracy estimate available here.
 JV6325
 JV6325.Click photographs - Photos may exist for this station.
 JV6325
 JV6325.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6325
 JV6325.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6325
 JV6325.The ellipsoidal height was determined by GPS observations
 JV6325.and is referenced to NAD 83.
 JV6325
 JV6325.The dynamic height is computed by dividing the NAVD 88
 JV6325.geopotential number by the normal gravity value computed on the
 JV6325.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6325.degrees latitude (g = 980.6199 gals.).
 JV6325
 JV6325.The modeled gravity was interpolated from observed gravity values.
 JV6325
 JV6325. The following values were computed from the NAD 83(2011) position.
 JV6325
 JV6325;                    North         East     Units Scale Factor Converg.
 JV6325;SPC MD       -   206,274.516   450,371.920   MT  1.00001366   +0 22 03.7
 JV6325;SPC MD       -   676,752.31  1,477,595.21   sFT  1.00001366   +0 22 03.7
 JV6325;UTM  18      - 4,375,816.160   378,448.702   MT  0.99978191   -0 54 00.3
 JV6325
 JV6325!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6325!SPC MD       -   0.99998289  x   1.00001366  =   0.99999655
 JV6325!UTM  18      -   0.99998289  x   0.99978191  =   0.99976481
 JV6325
 JV6325_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7844875816(NAD 83)
 JV6325
 JV6325|---------------------------------------------------------------------|
 JV6325| PID    Reference Object                     Distance      Geod. Az  |
 JV6325|                                                           dddmmss.s |
 JV6325| JV6291 FALLSTON                            398.439 METERS 18047     |
 JV6325|---------------------------------------------------------------------|
 JV6325
 JV6325                          SUPERSEDED SURVEY CONTROL
 JV6325
 JV6325  NAD 83(2007)-  39 31 24.23880(N)    076 24 51.04488(W) AD(2002.00) 0
 JV6325  ELLIP H (02/10/07)  109.071  (m)                       GP(2002.00)    
 JV6325  ELLIP H (09/18/02)  109.074  (m)                       GP(       ) 4 2
 JV6325  NAD 83(1991)-  39 31 24.23930(N)    076 24 51.04337(W) AD(       ) 1
 JV6325  ELLIP H (01/27/92)  109.021  (m)                       GP(       ) 4 1
 JV6325  NAD 83(1986)-  39 31 24.23289(N)    076 24 51.05109(W) AD(       ) 1
 JV6325  NGVD 29             141.96   (m)          465.7    (f) LEVELING    3  
 JV6325
 JV6325.Superseded values are not recommended for survey control.
 JV6325
 JV6325.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6325.See file dsdata.pdf to determine how the superseded data were derived.
 JV6325
 JV6325_MARKER: DZ = AZIMUTH MARK DISK
 JV6325_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6325_STAMPING: 51 FALLSTON 1989
 JV6325_MARK LOGO: MD-025
 JV6325_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6325_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6325+STABILITY: SURFACE MOTION
 JV6325_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6325+SATELLITE: SATELLITE OBSERVATIONS - October 14, 2015
 JV6325
 JV6325  HISTORY     - Date     Condition        Report By
 JV6325  HISTORY     - 1989     MONUMENTED       RDA
 JV6325  HISTORY     - 20020217 GOOD             USPSQD
 JV6325  HISTORY     - 20151014 GOOD             USPSQD
 JV6325
 JV6325                          STATION DESCRIPTION
 JV6325
 JV6325'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6325'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 3
 JV6325'MILES WEST OF THE VILLAGE OF BEL AIR ON THE GROUNDS OF FALLSTON HIGH
 JV6325'SCHOOL.  TO REACH THE STATION FROM THE INTERSECTION OF FEDERAL
 JV6325'HIGHWAY 1 AND STATE HIGHWAY 152 PROCEED NORTHWEST ALONG HIGHWAY 152
 JV6325'2.2 MILES TO THE STATION ON THE RIGHT.  TO REACH THE AZIMUTH MARK
 JV6325'FROM THE STATION PROCEED NORTH ALONG OLD FALLSTON ROAD 0.3 MILES TO
 JV6325'THE MARK ON THE RIGHT.  THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH
 JV6325'DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 51 FALLSTON
 JV6325'1989.  THE MARK IS 28.3 FEET NORTH OF THE CENTERLINE OF THE NORTH
 JV6325'ENTRANCE OF FALLSTON HIGH SCHOOL, 13.2 FEET NORTHEAST OF THE BASE OF
 JV6325'A LAMP POST, 63.0 FEET EAST OF THE CENTERLINE OF OLD FALLSTON ROAD.
 JV6325
 JV6325                          STATION RECOVERY (2002)
 JV6325
 JV6325'RECOVERY NOTE BY US POWER SQUADRON 2002 (DG)
 JV6325'CHANGE DESCRIPTION TO READ 13 FEET SOUTHEAST OF BASE OF LAMP POST.
 JV6325'FALLSTON ROAD BECOMES CARRS MILL ROAD.
 JV6325
 JV6325                          STATION RECOVERY (2015)
 JV6325
 JV6325'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV6325'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8002 ***********************************************************************
 AJ8002  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8002  DESIGNATION -  FARM
 AJ8002  PID         -  AJ8002
 AJ8002  STATE/COUNTY-  MD/ALLEGANY
 AJ8002  COUNTRY     -  US
 AJ8002  USGS QUAD   -  PATTERSON CREEK (2016)
 AJ8002
 AJ8002                         *CURRENT SURVEY CONTROL
 AJ8002  ______________________________________________________________________
 AJ8002* NAD 83(2011) POSITION- 39 35 47.41332(N) 078 44 14.05873(W)   ADJUSTED
 AJ8002* NAD 83(2011) ELLIP HT-   172.648 (meters)        (06/27/12)   ADJUSTED
 AJ8002* NAD 83(2011) EPOCH   -  2010.00
 AJ8002* NAVD 88 ORTHO HEIGHT -   205.515 (meters)      674.26  (feet) ADJUSTED
 AJ8002  ______________________________________________________________________
 AJ8002  GEOID HEIGHT    -        -32.847 (meters)                     GEOID18
 AJ8002  NAD 83(2011) X  -    961,215.371 (meters)                     COMP
 AJ8002  NAD 83(2011) Y  - -4,826,737.225 (meters)                     COMP
 AJ8002  NAD 83(2011) Z  -  4,043,675.325 (meters)                     COMP
 AJ8002  LAPLACE CORR    -         -2.85  (seconds)                    DEFLEC18
 AJ8002  DYNAMIC HEIGHT  -        205.395 (meters)      673.87  (feet) COMP
 AJ8002  MODELED GRAVITY -    980,040.9   (mgal)                       NAVD 88
 AJ8002
 AJ8002  VERT ORDER      -  SECOND    CLASS I
 AJ8002
 AJ8002  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8002  Standards:
 AJ8002         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8002            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8002  -------------------------------------------------------------------
 AJ8002  NETWORK    0.54   0.98           0.23   0.21   0.50     -0.02264133
 AJ8002  -------------------------------------------------------------------
 AJ8002  Click here for local accuracies and other accuracy information.
 AJ8002
 AJ8002.The horizontal coordinates were established by GPS observations
 AJ8002.and adjusted by the National Geodetic Survey in June 2012.
 AJ8002
 AJ8002.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8002.been affixed to the stable North American tectonic plate. See 
 AJ8002.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8002
 AJ8002.The horizontal coordinates are valid at the epoch date displayed above
 AJ8002.which is a decimal equivalence of Year/Month/Day.
 AJ8002
 AJ8002.The orthometric height was determined by differential leveling and
 AJ8002.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8002.in June 2003.
 AJ8002
 AJ8002.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8002.GEOID18 height accuracy estimate available here.
 AJ8002
 AJ8002.Click photographs - Photos may exist for this station.
 AJ8002
 AJ8002.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8002
 AJ8002.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8002
 AJ8002.The ellipsoidal height was determined by GPS observations
 AJ8002.and is referenced to NAD 83.
 AJ8002
 AJ8002.The dynamic height is computed by dividing the NAVD 88
 AJ8002.geopotential number by the normal gravity value computed on the
 AJ8002.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8002.degrees latitude (g = 980.6199 gals.).
 AJ8002
 AJ8002.The modeled gravity was interpolated from observed gravity values.
 AJ8002
 AJ8002. The following values were computed from the NAD 83(2011) position.
 AJ8002
 AJ8002;                    North         East     Units Scale Factor Converg.
 AJ8002;SPC MD       -   215,649.360   250,785.718   MT  1.00002891   -1 05 25.3
 AJ8002;SPC MD       -   707,509.61    822,786.14   sFT  1.00002891   -1 05 25.3
 AJ8002;UTM  17      - 4,385,420.647   694,290.261   MT  1.00006477   +1 26 33.7
 AJ8002
 AJ8002!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8002!SPC MD       -   0.99997291  x   1.00002891  =   1.00000182
 AJ8002!UTM  17      -   0.99997291  x   1.00006477  =   1.00003768
 AJ8002
 AJ8002_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9429085420(NAD 83)
 AJ8002
 AJ8002                          SUPERSEDED SURVEY CONTROL
 AJ8002
 AJ8002  NAD 83(2007)-  39 35 47.41348(N)    078 44 14.05943(W) AD(2002.00) 0
 AJ8002  ELLIP H (02/10/07)  172.669  (m)                       GP(2002.00)    
 AJ8002  NAD 83(1991)-  39 35 47.41358(N)    078 44 14.05983(W) AD(       ) A
 AJ8002  ELLIP H (02/12/02)  172.677  (m)                       GP(       ) 4 1
 AJ8002  NAVD 88 (02/12/02)  205.5    (m)  GEOID99  model used  GPS OBS        
 AJ8002
 AJ8002.Superseded values are not recommended for survey control.
 AJ8002
 AJ8002.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8002.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8002
 AJ8002_MARKER: DD = SURVEY DISK
 AJ8002_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8002_STAMPING: FARM 2000
 AJ8002_MARK LOGO: MDSHA
 AJ8002_PROJECTION: FLUSH
 AJ8002_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8002_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8002+STABILITY: SURFACE MOTION
 AJ8002_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8002+SATELLITE: SATELLITE OBSERVATIONS - October 03, 2021
 AJ8002
 AJ8002  HISTORY     - Date     Condition        Report By
 AJ8002  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ8002  HISTORY     - 20010713 GOOD             MDSHA
 AJ8002  HISTORY     - 20030624 GOOD             DEWDAV
 AJ8002  HISTORY     - 20090325 GOOD             MDSHA
 AJ8002  HISTORY     - 20090708 GOOD             RUKLKA
 AJ8002  HISTORY     - 20161201 GOOD             DEWDAV
 AJ8002  HISTORY     - 20211003 GOOD             GEOPRO
 AJ8002
 AJ8002                          STATION DESCRIPTION
 AJ8002
 AJ8002'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8002'THE STATION IS LOCATED ABOUT 0.7 MILES (1.1 KM) NORTH OF NORTH BRANCH,
 AJ8002'4.6 MILES (7.4 KM) SOUTH OF CUMBERLAND, AND 7.2 MILES (11.6 KM)
 AJ8002'NORTHWEST OF OLDTOWN.  TO REACH THE STATION FROM THE INTERSTATE 68
 AJ8002'BRIDGE OVER STATE HIGHWAY 51 (INDUSTRIAL BLVD) , EXIT 43B IN THE
 AJ8002'CENTER OF CUMBERLAND, GO SOUTH ALONG STATE HIGHWAY 51 FOR 1.25 MILES
 AJ8002'(2.01 KM) TO THE INTERSECTION WITH STATE HIGHWAY 28.  CONTINUE SOUTH
 AJ8002'ALONG STATE HIGHWAY 51 FOR 3.65 MILES (5.87 KM) TO MEXICO FARM ROAD
 AJ8002'LEADING WEST.  CONTINUE SOUTH ALONG STATE HIGHWAY 51 FOR 0.15 MILES
 AJ8002'(0.24 KM) TO THE STATION ON THE RIGHT.  THE STATION IS A MARYLAND
 AJ8002'STATE HIGHWAY SURVEY DISK SET IN THE TOP OF A 12 INCH ROUND CONCRETE
 AJ8002'MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS 35.0 FEET (10.7 M)
 AJ8002'SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 7.3 FEET (2.2 M) NORTHEAST
 AJ8002'OF A CARSONITE WITNESS POST, 7.8 FEET (2.4 M) NORTHEAST OF A METAL
 AJ8002'GUARD RAIL, 70.2 FEET (21.4 M) NORTH OF THE CENTER OF A 28 INCH ROUND
 AJ8002'METAL STORM WATER MANAGEMENT POND DRAINAGE OUTLET COVER, 114.5
 AJ8002'SOUTHEAST OF THE NORTHWEST MOST METAL GUARD RAIL SUPPORT I-BEAM, AND 1
 AJ8002'FOOT (0.3 M) LOWER THAN THE LEVEL OF THE HIGHWAY.
 AJ8002
 AJ8002                          STATION RECOVERY (2001)
 AJ8002
 AJ8002'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ8002'RECOVERED AS DESCRIBED.
 AJ8002
 AJ8002                          STATION RECOVERY (2003)
 AJ8002
 AJ8002'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (CSW)
 AJ8002'RECOVERED IN GOOD CONDITION.
 AJ8002
 AJ8002                          STATION RECOVERY (2009)
 AJ8002
 AJ8002'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 AJ8002'RECOVERED AS DESCRIBED, HOWEVER, A NEW CARSONITE POST WAS PLACED
 AJ8002'OUTSIDE THE GUARD RAIL. THE MARK IS NOW 9.0 FEET (2.7 M) NE OF THE
 AJ8002'POST.
 AJ8002
 AJ8002                          STATION RECOVERY (2009)
 AJ8002
 AJ8002'RECOVERY NOTE BY RUMMEL KLEPPER AND KAHL 2009 (GV)
 AJ8002'RECOVERED AS DESCRIBED BY MARYLAND DOT
 AJ8002
 AJ8002                          STATION RECOVERY (2016)
 AJ8002
 AJ8002'RECOVERY NOTE BY DEWBERRY DAVIS 2016 (GDS)
 AJ8002'RECOVERED IN GOOD CONDITION.
 AJ8002
 AJ8002                          STATION RECOVERY (2021)
 AJ8002
 AJ8002'RECOVERY NOTE BY GEOPRO CONSULTANTS LLC 2021 (CTS)
 AJ8002'RECOVERED AS DESCRIBED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6406 ***********************************************************************
 HV6406  DESIGNATION -  FARM 1910
 HV6406  PID         -  HV6406
 HV6406  STATE/COUNTY-  MD/DORCHESTER
 HV6406  COUNTRY     -  US
 HV6406  USGS QUAD   -  WINGATE (2016)
 HV6406
 HV6406                         *CURRENT SURVEY CONTROL
 HV6406  ______________________________________________________________________
 HV6406* NAD 83(1991) POSITION- 38 18 50.52515(N) 076 02 45.79821(W)   ADJUSTED
 HV6406* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6406  ______________________________________________________________________
 HV6406  GEOID HEIGHT    -        -35.454 (meters)                     GEOID18
 HV6406  LAPLACE CORR    -         -1.75  (seconds)                    DEFLEC18
 HV6406  HORZ ORDER      -  THIRD
 HV6406
 HV6406.The horizontal coordinates were established by classical geodetic methods
 HV6406.and adjusted by the National Geodetic Survey in January 1992.
 HV6406
 HV6406.The orthometric height was scaled from a topographic map.
 HV6406
 HV6406.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6406.GEOID18 height accuracy estimate available here.
 HV6406
 HV6406.Click photographs - Photos may exist for this station.
 HV6406
 HV6406.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6406
 HV6406. The following values were computed from the NAD 83(1991) position.
 HV6406
 HV6406;                    North         East     Units Scale Factor Converg.
 HV6406;SPC MD       -    72,296.645   483,427.054   MT  0.99999759   +0 35 55.4
 HV6406;SPC MD       -   237,193.24  1,586,043.59   sFT  0.99999759   +0 35 55.4
 HV6406;UTM  18      - 4,241,176.346   408,550.996   MT  0.99970299   -0 38 54.8
 HV6406
 HV6406!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6406!SPC MD       -   1.00000544  x   0.99999759  =   1.00000303
 HV6406!UTM  18      -   1.00000544  x   0.99970299  =   0.99970843
 HV6406
 HV6406:                Primary Azimuth Mark                     Grid Az
 HV6406:SPC MD       -  THORO 1910                               050 05 51.4
 HV6406:UTM  18      -  THORO 1910                               051 20 41.6
 HV6406
 HV6406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0855041176(NAD 83)
 HV6406
 HV6406|---------------------------------------------------------------------|
 HV6406| PID    Reference Object                     Distance      Geod. Az  |
 HV6406|                                                           dddmmss.s |
 HV6406| HV6405 THORO 1910                          APPROX. 3.1 KM 0504146.8 |
 HV6406| HV6411 TODDVILLE METHODIST CH SPIRE        APPROX. 2.7 KM 2255750.6 |
 HV6406|---------------------------------------------------------------------|
 HV6406
 HV6406                          SUPERSEDED SURVEY CONTROL
 HV6406
 HV6406  NAD 83(1986)-  38 18 50.52414(N)    076 02 45.81695(W) AD(       ) 3
 HV6406  NAD 27      -  38 18 50.08300(N)    076 02 47.03600(W) AD(       ) 3
 HV6406  USSD        -  38 18 50.47500(N)    076 02 46.82300(W) AD(       ) 3
 HV6406
 HV6406.Superseded values are not recommended for survey control.
 HV6406
 HV6406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6406.See file dsdata.pdf to determine how the superseded data were derived.
 HV6406
 HV6406_MARKER: H = DRILL HOLE
 HV6406_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6406_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6406+STABILITY: SURFACE MOTION
 HV6406
 HV6406  HISTORY     - Date     Condition        Report By
 HV6406  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6406  HISTORY     - 1931     GOOD             CGS
 HV6406  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6406  HISTORY     - 1950     MARK NOT FOUND   CGS
 HV6406
 HV6406                          STATION DESCRIPTION
 HV6406
 HV6406'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6406'STATION IS ON THE WESTERN SHORE OF FISHING BAY, ON POINT ON S
 HV6406'SIDE OF ENTRANCE TO CEDAR CREEK, ABOUT 1-5/8 MILES W OF FISHING
 HV6406'POINT, AND 3/4 MILE NE OF ENTRANCE TO FARM CREEK, ON MARSH ABOUT
 HV6406'1 FOOT ABOVE HIGH WATER, 20 YARDS S OF SHORE, 60 YARDS NW OF
 HV6406'SHORE, 45 YARDS W-SW OF EXTREME END OF POINT, 10 YARDS E-NE OF
 HV6406'SMALL POND IN MARSH, AND 300 YARDS S BY E OF A SMALL OYSTER WATCH
 HV6406'HOUSE ON OPPOSITE SIDE OF CEDAR CREEK.  STATION MARK IS A HOLE
 HV6406'IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6406'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6406'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6406'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  THE
 HV6406'SUBSURFACE MARK IS CENTER OF A 2-INCH DRAINTILE, BURIED WITH
 HV6406'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND
 HV6406'BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NEAR
 HV6406'PEAK OF HOUSE, 2-1/4 MILES, S 08 DEG 19 MIN W.  CHIMNEY IN
 HV6406'MIDDLE OF HOUSE, 2 MILES, S 50 DEG 00 MIN W.  STACK OF CANNING
 HV6406'HOUSE ON FAR CREEK, 1-1/2 MILES, S 55 DEG 28 MIN W.
 HV6406'NEAR CORNER OF SMALL SHANTY, 1/2 MILE, N 82 DEG 50 MIN W.
 HV6406'SMOKE PIPE OF SMALL SHANTY, 3/4 MILE, N 49 DEG 51 MIN W.  LEFT
 HV6406'CHIMNEY OF HOUSE, 4-7/8 MILES, S 74 DEG 34 MIN E.  STACK OF
 HV6406'CANNING HOUSE AT ELLIOTT ISLAND, 1-3/4 MILES, 285 DEG 26 MIN.
 HV6406
 HV6406                          STATION RECOVERY (1931)
 HV6406
 HV6406'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1931 (EHB)
 HV6406'STATION RECOVERED, DESCRIPTION IS GOOD, EXCEPT THAT SHANTY 1/2
 HV6406'MILE, 97 DEG 10 MIN IS MISSING.
 HV6406
 HV6406                          STATION RECOVERY (1942)
 HV6406
 HV6406'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6406'THE STATION IS LOCATED ON THE WESTERN SHORE OF FISHING BAY,
 HV6406'ON THE POINT ON THE S SIDE OF THE ENTRANCE TO CEDAR CREEK,
 HV6406'ABOUT 1-5/8 MILES W OF FISHING POINT AND 3/4 MILE NE OF THE
 HV6406'ENTRANCE TO FARM CREEK, ON MARSH 6.6 METERS NW OF THE HIGH-WATER
 HV6406'LINE, 35.2 METERS SW OF THE EXTREME END OF THE POINT, 19.6
 HV6406'METERS S OF THE HIGH-WATER LINE AND 8.8 METERS E OF THE EDGE OF
 HV6406'A SMALL POND.
 HV6406'
 HV6406'THE MARK IS A STANDARD CEMENT MONUMENT OF THE MARYLAND SHELL
 HV6406'FISH SURVEY, 8 INCHES SQUARE AND IS NOW FLUSH WITH THE SURFACE
 HV6406'OF THE MARSH.  THE TOP OF THE MARK HAS BEEN BROKEN OFF BY ICE
 HV6406'BUT THE BASE IS STILL INTACT.
 HV6406
 HV6406                          STATION RECOVERY (1950)
 HV6406
 HV6406'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HV6406'THIS STATION WAS THOROUGHLY SEARCHED FOR BY A FOUR-MAN PARTY
 HV6406'FOR APPROXIMATELY ONE AND A HALF HOURS.  SOME BROKEN PIECES OF
 HV6406'THE ORIGINAL MONUMENT WERE FOUND UNDER WATER, BUT NO OTHER
 HV6406'INDICATION OF THE STATION COULD BE FOUND.  AS THIS SECTION OF
 HV6406'THE SHORELINE IS SUBJECT TO EROSION, IT IS BELIEVED THAT THE
 HV6406'BASE OF THE STATION MENTIONED IN THE 1942 DESCRIPTION HAS BEEN
 HV6406'WASHED OUT AND THAT THE STATION SHOULD BE CONSIDERED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7060 ***********************************************************************
 HV7060  DESIGNATION -  FARR 1908
 HV7060  PID         -  HV7060
 HV7060  STATE/COUNTY-  MD/ST MARYS
 HV7060  COUNTRY     -  US
 HV7060  USGS QUAD   -  ROCK POINT (2016)
 HV7060
 HV7060                         *CURRENT SURVEY CONTROL
 HV7060  ______________________________________________________________________
 HV7060* NAD 83(1993) POSITION- 38 19 10.05160(N) 076 49 51.57385(W)   ADJUSTED
 HV7060* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7060  ______________________________________________________________________
 HV7060  GEOID HEIGHT    -        -33.680 (meters)                     GEOID18
 HV7060  LAPLACE CORR    -         -1.09  (seconds)                    DEFLEC18
 HV7060  HORZ ORDER      -  THIRD
 HV7060
 HV7060.The horizontal coordinates were established by classical geodetic methods
 HV7060.and adjusted by the National Geodetic Survey in November 1994.
 HV7060
 HV7060.The orthometric height was scaled from a topographic map.
 HV7060
 HV7060.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7060.GEOID18 height accuracy estimate available here.
 HV7060
 HV7060.Click photographs - Photos may exist for this station.
 HV7060
 HV7060.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7060
 HV7060. The following values were computed from the NAD 83(1993) position.
 HV7060
 HV7060;                    North         East     Units Scale Factor Converg.
 HV7060;SPC MD       -    72,476.502   414,779.641   MT  0.99999667   +0 06 21.9
 HV7060;SPC MD       -   237,783.32  1,360,822.87   sFT  0.99999667   +0 06 21.9
 HV7060;UTM  18      - 4,242,846.703   339,937.231   MT  0.99991553   -1 08 07.9
 HV7060
 HV7060!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7060!SPC MD       -   1.00000533  x   0.99999667  =   1.00000200
 HV7060!UTM  18      -   1.00000533  x   0.99991553  =   0.99992086
 HV7060
 HV7060:                Primary Azimuth Mark                     Grid Az
 HV7060:SPC MD       -  LYON 1908                                164 06 01.3
 HV7060:UTM  18      -  LYON 1908                                165 20 31.1
 HV7060
 HV7060_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3993742846(NAD 83)
 HV7060
 HV7060|---------------------------------------------------------------------|
 HV7060| PID    Reference Object                     Distance      Geod. Az  |
 HV7060|                                                           dddmmss.s |
 HV7060| HV7052 LYON 1908                           APPROX. 1.9 KM 1641223.2 |
 HV7060|---------------------------------------------------------------------|
 HV7060
 HV7060                          SUPERSEDED SURVEY CONTROL
 HV7060
 HV7060  NAD 83(1991)-  38 19 10.05095(N)    076 49 51.57844(W) AD(       ) 3
 HV7060  NAD 83(1986)-  38 19 10.05155(N)    076 49 51.58959(W) AD(       ) 3
 HV7060  NAD 27      -  38 19 09.54600(N)    076 49 52.67000(W) AD(       ) 3
 HV7060  USSD        -  38 19 10.26100(N)    076 49 52.74300(W) AD(       ) 3
 HV7060
 HV7060.Superseded values are not recommended for survey control.
 HV7060
 HV7060.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7060.See file dsdata.pdf to determine how the superseded data were derived.
 HV7060
 HV7060_MARKER: H = DRILL HOLE
 HV7060_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7060_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7060+STABILITY: SURFACE MOTION
 HV7060
 HV7060  HISTORY     - Date     Condition        Report By
 HV7060  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7060  HISTORY     - 1933     MARK NOT FOUND   CGS
 HV7060
 HV7060                          STATION DESCRIPTION
 HV7060
 HV7060'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7060'ON THE EASTERN SHORE OF WICOMICO RIVER, ABOUT 1-1/4 MILES SSE OF
 HV7060'MILLS POINT, AND 1/4 MILE N OF THE MOUTH OF MANAHOWIC CREEK.
 HV7060'STATION IS ABOUT 10 FEET ABOVE HIGH-WATER MARK, 5 YARDS E BY S OF
 HV7060'EDGE OF BANK, 32 YARDS NNW OF SEVERAL PINE TREES AT FISH SHANTY
 HV7060'NEAR EDGE OF BANK, 22 YARDS S BY E OF OTHER TREES, AND 300 YARDS
 HV7060'W BY N OF A LARGE HOUSE.  STATION MARK IS CENTER OF STANDARD
 HV7060'MONUMENT OF MARYLAND SHELL FISH SURVEY, WHICH IS MADE OF CONCRETE
 HV7060'AND IS 2 FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS
 HV7060'TOP IS MARKED WITH THE SAME MOLD AND SHOWS A CENTER HOLE
 HV7060'SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK LETTERS M.S.F.C.
 HV7060'ARRANGED AROUND THE VERTEX, AND THE LETTERS U.S.C.S. UNDERNEATH
 HV7060'THE BASE OF THE TRIANGLE.  THE CENTER HOLE IS ALWAYS AT THE CENTER OF
 HV7060'THE MOUNMENT AND IF THE MARKING HAS BEEN BROKEN OFF WITHOUT
 HV7060'DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE
 HV7060'USED AS THE LOCATION OF THE STATION.  THE MONUMENT IS SET
 HV7060'VERTICALLY IN THE GROUND, WITH TOP 16 INCHES BELOW SURFACE OF
 HV7060'GROUND.  SURFACE MARK IS NAIL IN STUB.  DISTANCES AND BEARINGS TO
 HV7060'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY ON LEFT SIDE
 HV7060'OF HOUSE, 1-3/4 MILES, S 39 DEG 6 MIN W.  LEFT PEAK OF HOUSE ON
 HV7060'CHAPTICO WHARF, 1/2 MILE, N 29 DEG 27 MIN W.  LEFT CHIMNEY OF
 HV7060'HOUSE ON MILLS POINT FARM, 1-1/4 MILES, N 14 DEG 1 MIN W.  RIGHT
 HV7060'CHIMNEY ON MADDOX HOUSE, 2 MILES, N 59 DEG 53 MIN E.  RIGHT
 HV7060'CORNER OF LARGE HOUSE, 1/4 MILE, S 70 DEG 2 MIN E.  NEAR CORNER OF
 HV7060'FISH SHANTY, 23.69 METERS (77.7 FEET), S 24 DEG 5 MIN E.
 HV7060
 HV7060                          STATION RECOVERY (1933)
 HV7060
 HV7060'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (HEC)
 HV7060'STATION LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH6260 ***********************************************************************
 DH6260  DESIGNATION -  FARRARA
 DH6260  PID         -  DH6260
 DH6260  STATE/COUNTY-  MD/BALTIMORE
 DH6260  COUNTRY     -  US
 DH6260  USGS QUAD   -  CURTIS BAY (2016)
 DH6260
 DH6260                         *CURRENT SURVEY CONTROL
 DH6260  ______________________________________________________________________
 DH6260* NAD 83(1986) POSITION- 39 13 59.84   (N) 076 30 16.15   (W)   HD_HELD1
 DH6260* NAVD 88 ORTHO HEIGHT -    10.124 (meters)       33.22  (feet) ADJUSTED
 DH6260  ______________________________________________________________________
 DH6260  GEOID HEIGHT    -        -33.000 (meters)                     GEOID18
 DH6260  DYNAMIC HEIGHT  -         10.119 (meters)       33.20  (feet) COMP
 DH6260  MODELED GRAVITY -    980,099.4   (mgal)                       NAVD 88
 DH6260
 DH6260  VERT ORDER      -  SECOND    CLASS I
 DH6260
 DH6260.The horizontal coordinates were determined by differentially corrected
 DH6260.hand held GPS observations or other comparable positioning techniques
 DH6260.and have an estimated accuracy of +/- 3 meters.
 DH6260
 DH6260.The orthometric height was determined by differential leveling and
 DH6260.adjusted by the NATIONAL GEODETIC SURVEY
 DH6260.in May 2006.
 DH6260
 DH6260.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH6260.GEOID18 height accuracy estimate available here.
 DH6260
 DH6260.Click photographs - Photos may exist for this station.
 DH6260
 DH6260.The dynamic height is computed by dividing the NAVD 88
 DH6260.geopotential number by the normal gravity value computed on the
 DH6260.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH6260.degrees latitude (g = 980.6199 gals.).
 DH6260
 DH6260.The modeled gravity was interpolated from observed gravity values.
 DH6260
 DH6260;                    North         East    Units  Estimated Accuracy
 DH6260;SPC MD       -   174,020.5     442,781.7     MT  (+/- 3 meters HH1 GPS) 
 DH6260
 DH6260_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7014943743(NAD 83)
 DH6260
 DH6260                          SUPERSEDED SURVEY CONTROL
 DH6260
 DH6260.No superseded survey control is available for this station.
 DH6260
 DH6260_MARKER: DD = SURVEY DISK
 DH6260_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 DH6260_SP_SET: PARAPET WALL
 DH6260_STAMPING: FARRARA 1998
 DH6260_MARK LOGO: MDSHA
 DH6260_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DH6260_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH6260_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH6260+SATELLITE: SATELLITE OBSERVATIONS - 1998
 DH6260
 DH6260  HISTORY     - Date     Condition        Report By
 DH6260  HISTORY     - 1998     MONUMENTED       MDSHA
 DH6260
 DH6260                          STATION DESCRIPTION
 DH6260
 DH6260'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 DH6260'THE STATION IS LOCATED ABOUT 8.0 MILES (12.9 KM) SOUTHEAST OF THE
 DH6260'BALTIMORE, IN THE TOWN OF DUNDALK.  TO REACH THE STATION FROM THE
 DH6260'NORTHEAST END OF THE INTERSTATE HIGHWAY 695 (FRANCIS SCOTT KEY) BRIDGE
 DH6260'OVER THE PATAPSCO RIVER PROCEED NORTHEAST FOR 0.75 MILES (1.21 KM) TO
 DH6260'THE BRIDGE OVER BEAR CREEK AND THE STATION ON THE RIGHT.  IT IS A
 DH6260'STANDARD STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE TOP OF
 DH6260'THE SOUTHWEST END OF THE SOUTHEAST PARAPET WALL FOR THE NORTH BOUND
 DH6260'LANES OF INTERSTATE HIGHWAY 695, 24.2 FEET (7.4 M) SOUTHEAST OF THE
 DH6260'CENTER LINE OF THE NORTHBOUND LANES OF THE HIGHWAY, 4.7 FEET (1.4 M)
 DH6260'NORTHEAST OF THE SOUTHWEST END OF WALL, 63.3 FEET (19.3 M) NORTHEAST
 DH6260'OF THE NORTHEAST MOST METAL SUPPORT POLE FOR A LARGE METAL OVERHEAD
 DH6260'HIGHWAY SIGN AND 3.6 FEET (1.1 M) HIGHER THAN THE ROAD SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1533 ***********************************************************************
 HU1533  DESIGNATION -  FASSETT
 HU1533  PID         -  HU1533
 HU1533  STATE/COUNTY-  MD/WORCESTER
 HU1533  COUNTRY     -  US
 HU1533  USGS QUAD   -  BERLIN (2016)
 HU1533
 HU1533                         *CURRENT SURVEY CONTROL
 HU1533  ______________________________________________________________________
 HU1533* NAD 83(1991) POSITION- 38 16 35.11218(N) 075 08 13.95093(W)   ADJUSTED
 HU1533* NAVD 88 ORTHO HEIGHT -     0.4   (meters)        1.    (feet) VERTCON3
 HU1533  ______________________________________________________________________
 HU1533  GEOID HEIGHT    -        -36.116 (meters)                     GEOID18
 HU1533  LAPLACE CORR    -         -0.35  (seconds)                    DEFLEC18
 HU1533  HORZ ORDER      -  THIRD
 HU1533
 HU1533.The horizontal coordinates were established by classical geodetic methods
 HU1533.and adjusted by the National Geodetic Survey in January 1992.
 HU1533
 HU1533.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1533.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1533
 HU1533.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1533.GEOID18 height accuracy estimate available here.
 HU1533
 HU1533.Click photographs - Photos may exist for this station.
 HU1533
 HU1533.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1533
 HU1533. The following values were computed from the NAD 83(1991) position.
 HU1533
 HU1533;                    North         East     Units Scale Factor Converg.
 HU1533;SPC MD       -    69,348.405   562,986.884   MT  1.00000419   +1 10 08.9
 HU1533;SPC MD       -   227,520.56  1,847,066.14   sFT  1.00000419   +1 10 08.9
 HU1533;UTM  18      - 4,236,494.024   487,998.807   MT  0.99960177   -0 05 06.0
 HU1533
 HU1533!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1533!SPC MD       -   1.00000561  x   1.00000419  =   1.00000980
 HU1533!UTM  18      -   1.00000561  x   0.99960177  =   0.99960738
 HU1533
 HU1533:                Primary Azimuth Mark                     Grid Az
 HU1533:SPC MD       -  MUD RM                                   175 02 17.5
 HU1533:UTM  18      -  MUD RM                                   176 17 32.4
 HU1533
 HU1533_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8799836494(NAD 83)
 HU1533
 HU1533|---------------------------------------------------------------------|
 HU1533| PID    Reference Object                     Distance      Geod. Az  |
 HU1533|                                                           dddmmss.s |
 HU1533| DR1328 SHORELINE REF 1                     164.400 METERS 03034     |
 HU1533| HU1492 TRIPOD                              APPROX. 4.7 KM 0440708.7 |
 HU1533| DC7277 FASSETT RM 3                         12.439 METERS 06637     |
 HU1533| DR1329 SHORELINE REF 2                     108.000 METERS 10717     |
 HU1533| HU1593 MUD RM                              APPROX. 3.8 KM 1761226.4 |
 HU1533| DR1330 SHORELINE REF 3                      95.400 METERS 18817     |
 HU1533| DC7278 FASSETT RM 4                         11.394 METERS 20645     |
 HU1533| DC7275 FASSETT RM 1                                       21207     |
 HU1533| DC7276 FASSETT RM 2                                       33153     |
 HU1533|---------------------------------------------------------------------|
 HU1533
 HU1533                          SUPERSEDED SURVEY CONTROL
 HU1533
 HU1533  NAD 83(1986)-  38 16 35.09633(N)    075 08 13.98211(W) AD(       ) 3
 HU1533  NAD 27      -  38 16 34.67571(N)    075 08 15.30744(W) AD(       ) 3
 HU1533  USSD        -  38 16 34.84300(N)    075 08 15.10400(W) AD(       ) 3
 HU1533  NGVD 29 (07/19/86)    0.6    (m)            2.     (f) VERT ANG       
 HU1533
 HU1533.Superseded values are not recommended for survey control.
 HU1533
 HU1533.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1533.See file dsdata.pdf to determine how the superseded data were derived.
 HU1533
 HU1533_MARKER: H = DRILL HOLE
 HU1533_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1533
 HU1533  HISTORY     - Date     Condition        Report By
 HU1533  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1533  HISTORY     - 1929     GOOD             CGS
 HU1533  HISTORY     - 1932     GOOD             CGS
 HU1533  HISTORY     - 1932     GOOD             CGS
 HU1533  HISTORY     - 1942     GOOD             CGS
 HU1533  HISTORY     - 1958     GOOD             CGS
 HU1533  HISTORY     - 1962     GOOD             CGS
 HU1533  HISTORY     - 1962     GOOD             CGS
 HU1533  HISTORY     - 1969     GOOD             MDDNR
 HU1533  HISTORY     - 1973     GOOD             MDDNR
 HU1533
 HU1533                          STATION DESCRIPTION
 HU1533
 HU1533'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1533'ON THE WESTERN SHORE OF SINEPUXENT BAY, ABOUT 1/2 MILE NNE
 HU1533'OF FASSETT POINT, ON SHELL AND MARSHLAND ABOUT 2 FEET ABOVE
 HU1533'HIGH WATER, 120 YARDS S BY E FROM A SLOUGH MAKING INTO MARSH, ABOUT
 HU1533'140 YARDS W OF SIDE OF POINT, AND 110 YARDS N OF SIDE OF POINT.
 HU1533'IT IS ABOUT 200 YARDS NE OF A FENCE BEYOND WHICH IS A CLUMP OF
 HU1533'TREES.  STATION MARKED BY CENTER OF STANDARD CEMENT MONUMENT
 HU1533'OF THE MARYLAND SHELL FISH SURVEY WHICH PROJECTS 3 TO 5 INCHES
 HU1533'ABOVE SURFACE WHICH IS MADE OF CONCRETE 2
 HU1533'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1533'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1533'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1533'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1533'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1533'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1533'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1533'THE LOCATION OF THE STATION.
 HU1533'
 HU1533'DISTANCES AND AZIMUTHS TO VARIOUS POINTS OF REFERENCE ARE
 HU1533'AS FOLLOWS--LEFT OF CLUMP OF TREES, 500 YARDS, S 32 DEG 16 MIN W.
 HU1533'RIGHT EDGE OF CLUMP OF TREES, 400 YARDS S 62 DEG 03 MIN W.
 HU1533'CHIMNEY OF GRAY HOUSE, 5/8 MILE, N 80 DEG 12 MIN W.  RIGHT
 HU1533'TANGENT OF ROOF OF BRICK HOUSE, 3/4 MILE, N 36 DEG 02 MIN W.
 HU1533'CHIMNEY ON CENTER OF RED ROOF ON WHITE HOUSE, 3/4 MILE, N 27 DEG
 HU1533'51 MIN W.  CHIMNEY ON LEFT SIDE OF A FRENCH-ROOF HOUSE, 2
 HU1533'MILES, N 4 DEG 07 MIN W.  BAKERS WINDMILL, 2-1/2 MILES, N 23 DEG
 HU1533'19 MIN E.  CHIMNEY ON RIGHT EDGE OF BAKERS HOUSE,
 HU1533'2-1/2 MILES, N 24 DEG 07 MIN E.
 HU1533
 HU1533                          STATION RECOVERY (1929)
 HU1533
 HU1533'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (CFE)
 HU1533'STATION MARK RECOVERED AS DESCRIBED.  THE SITE IS ON FIRM
 HU1533'MARSH GROUND, BUT IS SURROUNDED BY LOW WET MARSH.  TWO REFERENCE
 HU1533'MARKS (TERRA-COTTA PIPE FILLED WITH CONCRETE WITH REGULATION
 HU1533'DISK IN TOP) WERE ESTABLISHED.
 HU1533
 HU1533                          STATION RECOVERY (1932)
 HU1533
 HU1533'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (ERM)
 HU1533'STATION AND REFERENCE RECOVERED IN GOOD CONDITION.  STATION
 HU1533'MARK, STANDARD MARK, SHELL FISH COMMISSION CONCRETE
 HU1533'POST.  REFERENCE MARKS ARE STANDARD COAST AND GEODETIC SURVEY
 HU1533'MARKS.
 HU1533'
 HU1533'TO REACH THIS POINT, GO OUT FROM BERLIN ON HARD-SURFACED
 HU1533'ROAD 4.7 MILES TO RAYNES STORE, TURN TO RIGHT ON DIRT ROAD, GO
 HU1533'0.7 MILE TO MRS. SHOCKLEYS FARM.  STATION IN MARSH 1/2 MILE
 HU1533'E OF FARMHOUSE.
 HU1533
 HU1533                          STATION RECOVERY (1932)
 HU1533
 HU1533'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (CDM)
 HU1533'STATION MARK AND TWO REFERENCE MARKS FOUND IN GOOD
 HU1533'CONDITION.  STATION IS MARKED BY CEMENT POST.  NO NEW MARKS
 HU1533'WERE REQUIRED.
 HU1533'
 HU1533'TO REACH STATION GO ON HARD-SURFACED ROAD FROM BERLIN,
 HU1533'MARYLAND, ABOUT SE 4.7 MILES TO RAYNES STORE, TURN RIGHT, GO
 HU1533'0.7 MILE ON DIRT ROAD, TURN LEFT, GO 0.3 MILE TO FARM OWNED BY
 HU1533'MRS. SHOCKLEY AND OCCUPIED BY MR. JOHN BRITTINGHAM, GO 1/2 MILE
 HU1533'TO MARSH ON E SIDE OF THIS FARM.  STATION IS HERE.
 HU1533
 HU1533                          STATION RECOVERY (1942)
 HU1533
 HU1533'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1533'THE FOLLOWING DISCREPANCY WAS NOTED IN THE ORIGINAL DESCRIPTION--
 HU1533'
 HU1533'110 YARDS S OF SLOUGH MAKING INTO MARSH.  NOT 120 YARDS S BY E.
 HU1533'
 HU1533'THE STATION IS LOCATED ON THE WESTERN SHORE OF SINEPUXENT
 HU1533'BAY, ABOUT 1/2 MILE NNE OF FASSETT POINT, ON FIRM LAND
 HU1533'SURROUNDED BY LOW, WET MARSH, 135 YARDS W OF THE SHORE OF THE
 HU1533'BAY, 110 YARDS S OF A SMALL SLOUGH MAKING INTO THE MARSH,
 HU1533'AND 200 YARDS NE OF A FENCE BEYOND WHICH IS A CLUMP OF
 HU1533'TREES.  THE STATION IS MARKED BY A 9-INCH SQUARE CONCRETE
 HU1533'MONUMENT OF THE MARYLAND SHELL FISH SURVEY WITH
 HU1533'M.S.F.C. - U.S.C.S. COUNTERSUNK IN THE TOP, WHICH EXTENDS
 HU1533'2 INCHES ABOVE THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1533'
 HU1533'REFERENCE MARK NO.1 AND REFERENCE MARK NO.2 WERE FOUND DESTROYED.
 HU1533
 HU1533                          STATION RECOVERY (1958)
 HU1533
 HU1533'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1533'STATION WAS RECOVERED AS DESCRIBED
 HU1533'
 HU1533'STATION IS NOW 142 PACES WNW OF THE CLOSEST PART OF THE GROUND
 HU1533'NEAR CHANNEL MARKER NO. 14
 HU1533'
 HU1533'THE CEMENT IN REFERENCE MARKS NO. 1 AND 2 HAVE CRUMBLED AND THE
 HU1533'TERRACOTTA PIPES HAVE BEEN BROKEN OFF ABOUT AT THE TOP OF THE
 HU1533'GROUND.  THE PIECES OF TERRACOTTA PIPE ARE STILL IN THE
 HU1533'IMMEDIATE AREA OF THE REFERENCE MARKS.
 HU1533
 HU1533                          STATION RECOVERY (1962)
 HU1533
 HU1533'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1533'THE STATION MARK WAS RECOVERED IN GOOD CONDITION 1 INCH ABOVE
 HU1533'SURFACE OF MARSH.
 HU1533'
 HU1533'BOTH REFERENCE MARKS ARE DESTROYED HOWEVER REMNANTS OF TILE
 HU1533'REMAIN AT THE LOCATION OF BOTH REFERENCE MARKS.  THE STATION IS
 HU1533'65 FEET NE OF A DITCH INTERSECTION ON RANGE WITH OCEAN CITY
 HU1533'NORTH MUNICIPAL WATER TANK, AND 2 FEET E OF STEEL WITNESS
 HU1533'POST.  MANY OLD STAKES SURROUND THE AREA OF THE STATION.
 HU1533
 HU1533                          STATION RECOVERY (1962)
 HU1533
 HU1533'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1533'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED,
 HU1533'RM 1 AND 2 WERE DESTROYED AN RM 3 AND 4 WERE SET AT THIS TIME.  A
 HU1533'NEW TO REACH AS FOLLOWS.
 HU1533'
 HU1533'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50
 HU1533'WITH STATE HIGHWAY 611, ABOUT 1.5 MILES EAST OF OCEAN CITY,
 HU1533'GO SOUTH ON HIGHWAY 611 FOR 3.8 MILES TO A JUNCTION WITH
 HU1533'STATE HIGHWAY 376, CONTINUE FOR 0.6 MILE TO A SAND ROAD LEFT,
 HU1533'TURN LEFT, AND GO EAST ON A SAND ROAD FOR 0.4 MILE TO AN OLD
 HU1533'HOUSE SITE ON THE RIGHT AND A RED BARN ON THE LEFT.  CONTINUE
 HU1533'EAST THROUGH A GATE AND ON A FIELD ROAD FOR 0.25 MILE TO A
 HU1533'FORK AT WEST EDGE OF A FIELD.  TURN LEFT AND GO NORTHERLY
 HU1533'ALONG WEST EDGE OF FIELD FOR 0.15 MILE TO AN OLD BOAT HOUSE ON
 HU1533'THE LEFT AND AN OPEN FIELD ON THE RIGHT (THIS IS ETT), GO
 HU1533'EASTERLY ON A TRACK ROAD THROUGH AND AROUND A FRINGE OF BRUSH
 HU1533'FOR APPROX 0.4 MILE TO A DRAINAGE DITCH THAT BEGINS
 HU1533'NEAR THE BRUSH AND EMPTIES INTO THE BAY BY DAY MARKER NO. 14,
 HU1533'TURN LEFT TOWARD THE BAY FOR ABOUT 150 YARDS TO THE STATION ON
 HU1533'THE LEFT.
 HU1533'
 HU1533'REFERENCE MARK NO. 3 IS A STANDARD DISK STAMPED FASSETT NO. 3
 HU1533'1908, SET IN A 12 X 12 INCH SQUARE CONCRETE MONUMENT, PROJECTING
 HU1533'1 INCH FROM THE GROUND.  IT IS 42.5 FEET NORTHEAST OF A
 HU1533'STANDARD METAL WITNESS POST.  82.7 FEET NORTH OF A DRAINAGE
 HU1533'DITCH.  72.0 FEET EAST OF A DRAINAGE DITCH.
 HU1533'
 HU1533'REFERENCE MARK NO. 4 IS A STANDARD DISK STAMPED FASSETT NO. 4
 HU1533'1908, SET IN A 12 X 12 INCH SQUARE CONCRETE MONUMENT,
 HU1533'PROJECTING 1 FOOT FROM THE GROUND.  IT IS 36.8 FEET SOUTHWEST OF A
 HU1533'STANDARD METAL WITNESS POST.  24.3 FEET NORTH OF A DRAINAGE
 HU1533'DITCH.  15.6 FEET EAST OF A DRAINAGE DITCH.
 HU1533'
 HU1533'HEIGHT OF LIGHT ABOVE STATION MARK 1.53 METERS.
 HU1533
 HU1533                          STATION RECOVERY (1969)
 HU1533
 HU1533'RECOVERY NOTE BY MD DEPT OF NAT RES 1969 (GEH)
 HU1533'RECOVERED BY MDDCBA.
 HU1533'
 HU1533'MDSFC-USGS GOOD
 HU1533'
 HU1533'RM NO-3 1908 POOR
 HU1533'
 HU1533'RM NO-4 1908 POOR
 HU1533'
 HU1533'SHOULD BE CHANGED (DESCRIPTION) RM 3 SHOULD READ--12 X 12
 HU1533'CONC. MONUMENT 1 FOOT ABOVE GROUND (NOT 1 INCH).  BOTH RM 3 AND 4
 HU1533'CONC. MONUMENTS ARE BROKEN OFF EVEN WITH THE GROUND.  THEY ARE
 HU1533'HELD IN PLACE BY WOOD FORMS THE CONC. WAS POURED IN.  WHEN WOOD
 HU1533'ROTS MONUMENTS WILL FALL OVER AND BE DESTROYED.  STATION FASSETT
 HU1533'HAS OLD WOOD TRIPOD STILL OVER MONUMENT.
 HU1533
 HU1533                          STATION RECOVERY (1973)
 HU1533
 HU1533'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HU1533'MDSFC-USCS (CAST) GOOD
 HU1533'
 HU1533'RM 3 DESTROYED
 HU1533'
 HU1533'RM 4 DESTROYED
 HU1533'
 HU1533'RECOVERED AS DESCRIBED WITH CHANGES--NEW WITNESS POST AND SIGN
 HU1533'PLACED E OF STATION.  RMS 3 AND 4 FOUND DESTROYED CONCRETE CRUMBLED
 HU1533'AND DISKS GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4831 ***********************************************************************
 JV4831  DESIGNATION -  FAWN GROVE
 JV4831  PID         -  JV4831
 JV4831  STATE/COUNTY-  MD/HARFORD
 JV4831  COUNTRY     -  US
 JV4831  USGS QUAD   -  FAWN GROVE (2019)
 JV4831
 JV4831                         *CURRENT SURVEY CONTROL
 JV4831  ______________________________________________________________________
 JV4831* NAD 83(1991) POSITION- 39 42 00.58226(N) 076 27 05.98045(W)   ADJUSTED
 JV4831* NAVD 88 ORTHO HEIGHT -   206.803 (meters)      678.49  (feet) ADJUSTED
 JV4831  ______________________________________________________________________
 JV4831  GEOID HEIGHT    -        -32.598 (meters)                     GEOID18
 JV4831  LAPLACE CORR    -         -3.23  (seconds)                    DEFLEC18
 JV4831  DYNAMIC HEIGHT  -        206.700 (meters)      678.15  (feet) COMP
 JV4831  MODELED GRAVITY -    980,122.3   (mgal)                       NAVD 88
 JV4831
 JV4831  HORZ ORDER      -  THIRD
 JV4831  VERT ORDER      -  FIRST     CLASS II
 JV4831
 JV4831.The horizontal coordinates were established by classical geodetic methods
 JV4831.and adjusted by the National Geodetic Survey in January 1992.
 JV4831
 JV4831.The orthometric height was determined by differential leveling and
 JV4831.adjusted by the NATIONAL GEODETIC SURVEY
 JV4831.in June 1991.
 JV4831
 JV4831.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4831.GEOID18 height accuracy estimate available here.
 JV4831
 JV4831.Click photographs - Photos may exist for this station.
 JV4831
 JV4831.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4831
 JV4831.The dynamic height is computed by dividing the NAVD 88
 JV4831.geopotential number by the normal gravity value computed on the
 JV4831.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV4831.degrees latitude (g = 980.6199 gals.).
 JV4831
 JV4831.The modeled gravity was interpolated from observed gravity values.
 JV4831
 JV4831. The following values were computed from the NAD 83(1991) position.
 JV4831
 JV4831;                    North         East     Units Scale Factor Converg.
 JV4831;SPC MD       -   225,880.181   447,031.148   MT  1.00005335   +0 20 39.0
 JV4831;SPC MD       -   741,075.23  1,466,634.69   sFT  1.00005335   +0 20 39.0
 JV4831;SPC PA S     -    41,549.613   711,354.516   MT  1.00004464   +0 50 32.5
 JV4831;SPC PA S     -   136,317.36  2,333,835.61   sFT  1.00004464   +0 50 32.5
 JV4831;UTM  18      - 4,395,486.188   375,543.882   MT  0.99979070   -0 55 38.6
 JV4831
 JV4831!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4831!SPC MD       -   0.99997267  x   1.00005335  =   1.00002602
 JV4831!SPC PA S     -   0.99997267  x   1.00004464  =   1.00001731
 JV4831!UTM  18      -   0.99997267  x   0.99979070  =   0.99976338
 JV4831
 JV4831:                Primary Azimuth Mark                     Grid Az
 JV4831:SPC MD       -  FAWN GROVE AZ MK                         000 58 03.1
 JV4831:SPC PA S     -  FAWN GROVE AZ MK                         000 28 09.6
 JV4831:UTM  18      -  FAWN GROVE AZ MK                         002 14 20.7
 JV4831
 JV4831_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7554395486(NAD 83)
 JV4831
 JV4831|---------------------------------------------------------------------|
 JV4831| PID    Reference Object                     Distance      Geod. Az  |
 JV4831|                                                           dddmmss.s |
 JV4831| JV6299 FAWN GROVE AZ MK                    APPROX. 0.7 KM 0011842.1 |
 JV4831| CA9406 FAWN GROVE RM 1                      21.077 METERS 07043     |
 JV4831| JV4832 PENNSYLVANIA W AND P TOWER 100      APPROX. 8.3 KM 1435259.1 |
 JV4831| CA9407 FAWN GROVE RM 2                      21.491 METERS 15405     |
 JV4831|---------------------------------------------------------------------|
 JV4831
 JV4831                          SUPERSEDED SURVEY CONTROL
 JV4831
 JV4831  NAD 83(1986)-  39 42 00.57710(N)    076 27 05.98601(W) AD(       ) 3
 JV4831  NAD 27      -  39 42 00.20300(N)    076 27 07.11000(W) AD(       ) 3
 JV4831  NGVD 29             207.05   (m)          679.3    (f) LEVELING    3  
 JV4831
 JV4831.Superseded values are not recommended for survey control.
 JV4831
 JV4831.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4831.See file dsdata.pdf to determine how the superseded data were derived.
 JV4831
 JV4831_MARKER: DS = TRIANGULATION STATION DISK
 JV4831_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4831_STAMPING: FAWN GROVE 1947
 JV4831_MARK LOGO: CGS
 JV4831_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4831_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4831+STABILITY: SURFACE MOTION
 JV4831_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4831+SATELLITE: SATELLITE OBSERVATIONS - September 04, 1989
 JV4831
 JV4831  HISTORY     - Date     Condition        Report By
 JV4831  HISTORY     - 1947     MONUMENTED       CGS
 JV4831  HISTORY     - 1947     GOOD             CGS
 JV4831  HISTORY     - 19890904 GOOD             RDA
 JV4831
 JV4831                          STATION DESCRIPTION
 JV4831
 JV4831'DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (CRR)
 JV4831'THE STATION IS LOCATED ABOUT 01.85 MILES SOUTH OF THE TOWN OF
 JV4831'FAWN GROVE, ALONG A BLACK TOP ROAD, AND IS ON THE PROPERTY OF
 JV4831'MR. JIM SMITH.  THE STATION IS 98 FEET SOUTHWEST OF THE CENTERLINE
 JV4831'OF THE ROAD, 15 FEET SOUTHEAST OF A FENCE LINE AND 50 FEET
 JV4831'NORTHWEST OF A TRACK ROAD WHICH LEADS INTO A GROVE OF TREES FROM
 JV4831'THE HIGHWAY.  THE MARK PROJECTS ABOUT 8 INCHES AND THE DISK IS
 JV4831'STAMPED FAWN GROVE 1947.
 JV4831'
 JV4831'REFERENCE MARK NO. 1 IS 69.15 FEET NORTHEAST OF THE STATION, 29
 JV4831'FEET WEST OF THE CENTER LINE OF THE HIGHWAY AND 12 FEET NORTHWEST
 JV4831'OF A TRACK ROAD.  THE MARK PROJECTS ABOUT 8 INCHES AND IS STAMPED
 JV4831'FAWN GROVE NO. 1 1947.
 JV4831'
 JV4831'REFERENCE MARK NO. 2 IS 70.51 FEET SOUTHEAST OF THE STATION, 98
 JV4831'FEET WEST OF THE CENTER LINE OF THE HIGHWAY AND 10 FEET EAST OF THE
 JV4831'TRACK ROAD.  THE MARK PROJECTS ABOUT 8 INCHES AND IS STAMPED FAWN
 JV4831'GROVE NO. 2 1947.
 JV4831'
 JV4831'THE AZIMUTH MARK IS 0.4 MILE NORTH OF THE STATION ALONG A BLACK
 JV4831'TOP ROAD, 15 FEET NORTHEAST OF THE CENTERLINE OF THE HIGHWAY, 3
 JV4831'FEET EAST OF G AND E CO. POLE NUMBER 114282.  IT IS ABOUT 300 FEET
 JV4831'NORTH OF THE OLD SUMMER HALL SCHOOL.  THE MARK PROJECTS ABOUT 8
 JV4831'INCHES AND THE DISK IS STAMPED FAWN GROVE 1947.
 JV4831'
 JV4831'TO REACH THE STATION FROM FAWN GROVE GO SOUTH ON THE BLACK TOP
 JV4831'ROAD FOR 1.85 MILES TO A DIM ROAD LEADING INTO A TIMBER AREA ON THE
 JV4831'RIGHT.  TURN RIGHT AND CONTINUE ON FOR 98 FEET.  THE STATION IS
 JV4831'ABOUT 60 FEET NORTH OF THE DIM ROAD AT THIS POINT.
 JV4831'
 JV4831'TO REACH THE AZIMUTH FROM FAWN GROVE GO SOUTH ON THE BLACK TOP
 JV4831'ROAD FOR 1.45 MILES TO G. AND E. CO. POLE NO. 114282 ON THE LEFT
 JV4831'AND THE AZIMUTH AS DESCRIBED.
 JV4831'
 JV4831'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4831
 JV4831                          STATION RECOVERY (1947)
 JV4831
 JV4831'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947
 JV4831'RECOVERED IN GOOD CONDITION.
 JV4831
 JV4831                          STATION RECOVERY (1989)
 JV4831
 JV4831'RECOVERY NOTE BY RINKER DETWILER AND ASSOCIATES 1989
 JV4831'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV4831'5 MILES EAST OF NORRISVILLE.  TO REACH THE STATION FROM THE
 JV4831'INTERSECTION OF STATE HIGHWAY 136 AND STATE HIGHWAY 24 PROCEED WEST
 JV4831'ALONG HIGHWAY 136 1.84 MILES TO ITS INTERSECTION WITH FAWN GROVE
 JV4831'ROAD.  TURN RIGHT AND PROCEED NORTH ALONG FAWN GROVE ROAD 0.21 MILES
 JV4831'TO THE STATION ON THE LEFT APPROXIMATELY 100 FEET INTO THE WOODS.
 JV4831'THE STATION IS A STANDARD U.S. COAST AND GEODETIC SURVEY DISC SET IN
 JV4831'CONCRETE ABOUT 4 INCHES ABOVE GROUND STAMPED FAWN GROVE 1947.  THE
 JV4831'STATION IS 69.15 FEET SOUTHWEST OF REFERENCE MARK FAWN GROVE NUMBER
 JV4831'1, 70.51 FEET NORTHWEST OF REFERENCE MARK FAWN GROVE NUMBER 2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6299 ***********************************************************************
 JV6299  DESIGNATION -  FAWN GROVE AZ MK
 JV6299  PID         -  JV6299
 JV6299  STATE/COUNTY-  MD/HARFORD
 JV6299  COUNTRY     -  US
 JV6299  USGS QUAD   -  FAWN GROVE (2019)
 JV6299
 JV6299                         *CURRENT SURVEY CONTROL
 JV6299  ______________________________________________________________________
 JV6299* NAD 83(2011) POSITION- 39 42 24.05492(N) 076 27 05.28463(W)   ADJUSTED
 JV6299* NAD 83(2011) ELLIP HT-   168.361 (meters)        (06/27/12)   ADJUSTED
 JV6299* NAD 83(2011) EPOCH   -  2010.00
 JV6299* NAVD 88 ORTHO HEIGHT -   200.962 (meters)      659.32  (feet) ADJUSTED
 JV6299  ______________________________________________________________________
 JV6299  GEOID HEIGHT    -        -32.603 (meters)                     GEOID18
 JV6299  NAD 83(2011) X  -  1,151,128.891 (meters)                     COMP
 JV6299  NAD 83(2011) Y  - -4,776,967.783 (meters)                     COMP
 JV6299  NAD 83(2011) Z  -  4,053,091.397 (meters)                     COMP
 JV6299  LAPLACE CORR    -         -3.31  (seconds)                    DEFLEC18
 JV6299  DYNAMIC HEIGHT  -        200.861 (meters)      658.99  (feet) COMP
 JV6299  MODELED GRAVITY -    980,120.5   (mgal)                       NAVD 88
 JV6299
 JV6299  VERT ORDER      -  FIRST     CLASS II
 JV6299
 JV6299  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6299  Standards:
 JV6299         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6299            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6299  -------------------------------------------------------------------
 JV6299  NETWORK    2.19   5.64           0.73   1.01   2.88     -0.01694562
 JV6299  -------------------------------------------------------------------
 JV6299  Click here for local accuracies and other accuracy information.
 JV6299
 JV6299.The horizontal coordinates were established by GPS observations
 JV6299.and adjusted by the National Geodetic Survey in June 2012.
 JV6299
 JV6299.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6299.been affixed to the stable North American tectonic plate. See 
 JV6299.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6299
 JV6299.The horizontal coordinates are valid at the epoch date displayed above
 JV6299.which is a decimal equivalence of Year/Month/Day.
 JV6299
 JV6299.The orthometric height was determined by differential leveling and
 JV6299.adjusted by the NATIONAL GEODETIC SURVEY
 JV6299.in June 1991.
 JV6299
 JV6299.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6299.GEOID18 height accuracy estimate available here.
 JV6299
 JV6299.Click photographs - Photos may exist for this station.
 JV6299
 JV6299.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6299
 JV6299.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6299
 JV6299.The ellipsoidal height was determined by GPS observations
 JV6299.and is referenced to NAD 83.
 JV6299
 JV6299.The dynamic height is computed by dividing the NAVD 88
 JV6299.geopotential number by the normal gravity value computed on the
 JV6299.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6299.degrees latitude (g = 980.6199 gals.).
 JV6299
 JV6299.The modeled gravity was interpolated from observed gravity values.
 JV6299
 JV6299. The following values were computed from the NAD 83(2011) position.
 JV6299
 JV6299;                    North         East     Units Scale Factor Converg.
 JV6299;SPC MD       -   226,604.236   447,043.375   MT  1.00005499   +0 20 39.4
 JV6299;SPC MD       -   743,450.73  1,466,674.81   sFT  1.00005499   +0 20 39.4
 JV6299;SPC PA S     -    42,273.739   711,360.448   MT  1.00004317   +0 50 32.9
 JV6299;SPC PA S     -   138,693.09  2,333,855.07   sFT  1.00004317   +0 50 32.9
 JV6299;UTM  18      - 4,396,209.602   375,572.167   MT  0.99979061   -0 55 38.6
 JV6299
 JV6299!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6299!SPC MD       -   0.99997359  x   1.00005499  =   1.00002858
 JV6299!SPC PA S     -   0.99997359  x   1.00004317  =   1.00001676
 JV6299!UTM  18      -   0.99997359  x   0.99979061  =   0.99976420
 JV6299
 JV6299_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7557296209(NAD 83)
 JV6299
 JV6299                          SUPERSEDED SURVEY CONTROL
 JV6299
 JV6299  NAD 83(2007)-  39 42 24.05521(N)    076 27 05.28529(W) AD(2002.00) 0
 JV6299  ELLIP H (02/10/07)  168.382  (m)                       GP(2002.00)    
 JV6299  ELLIP H (09/18/02)  168.405  (m)                       GP(       ) 4 2
 JV6299  NAD 83(1991)-  39 42 24.05524(N)    076 27 05.28448(W) AD(       ) 1
 JV6299  ELLIP H (01/27/92)  168.397  (m)                       GP(       ) 4 1
 JV6299  NAD 83(1986)-  39 42 24.04825(N)    076 27 05.29021(W) AD(       ) 1
 JV6299  NGVD 29             201.20   (m)          660.1    (f) LEVELING    3  
 JV6299
 JV6299.Superseded values are not recommended for survey control.
 JV6299
 JV6299.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6299.See file dsdata.pdf to determine how the superseded data were derived.
 JV6299
 JV6299_MARKER: DZ = AZIMUTH MARK DISK
 JV6299_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6299_STAMPING: FAWN GROVE 1947
 JV6299_MARK LOGO: CGS
 JV6299_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6299_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6299+STABILITY: SURFACE MOTION
 JV6299_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6299+SATELLITE: SATELLITE OBSERVATIONS - September 04, 1989
 JV6299
 JV6299  HISTORY     - Date     Condition        Report By
 JV6299  HISTORY     - 1947     MONUMENTED       CGS
 JV6299  HISTORY     - 19890904 GOOD             RDA
 JV6299  HISTORY     - 19990514 GOOD             GEOMET
 JV6299
 JV6299                          STATION DESCRIPTION
 JV6299
 JV6299'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6299'THE STATION IS LOCATED IN NORTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6299'5 MILES EAST OF NORRISVILLE.  TO REACH THE STATION FROM THE
 JV6299'INTERSECTION OF STATE HIGHWAY 136 AND STATE HIGHWAY 24 PROCEED WEST
 JV6299'ALONG HIGHWAY 136 1.84 MILES TO ITS INTERSECTION WITH FAWN GROVE
 JV6299'ROAD.  TURN RIGHT AND PROCEED NORTH ALONG FAWN GROVE ROAD 0.21 MILES
 JV6299'TO THE STATION ON THE LEFT APPROXIMATELY 100 FEET INTO THE WOODS.  TO
 JV6299'REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTH ALONG FAWN
 JV6299'GROVE ROAD 0.4 MILES TO THE MARK ON THE RIGHT.  THE MARK IS A
 JV6299'STANDARD U.S. COAST AND GEODETIC AZIMUTH DISC SET IN CONCRETE ABOUT
 JV6299'2 INCHES ABOVE GROUND STAMPED FAWN GROVE 1947.  THE MARK IS 1.5 FEET
 JV6299'SOUTHEAST OF G AND E POWER POLE NUMBER 114282, 14.8 FEET EAST OF THE
 JV6299'CENTERLINE OF FAWN GROVE ROAD, 36.9 FEET NORTHEAST OF THE CENTERLINE
 JV6299'OF DRIVEWAY RESIDENCE NUMBER 5128.
 JV6299
 JV6299                          STATION RECOVERY (1999)
 JV6299
 JV6299'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (CN)
 JV6299'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7020 ***********************************************************************
 JV7020  DESIGNATION -  FDK A
 JV7020  PID         -  JV7020
 JV7020  STATE/COUNTY-  MD/FREDERICK
 JV7020  COUNTRY     -  US
 JV7020  USGS QUAD   -  FREDERICK (2016)
 JV7020
 JV7020                         *CURRENT SURVEY CONTROL
 JV7020  ______________________________________________________________________
 JV7020* NAD 83(2011) POSITION- 39 24 32.67067(N) 077 22 46.77745(W)   ADJUSTED
 JV7020* NAD 83(2011) ELLIP HT-    60.534 (meters)        (06/27/12)   ADJUSTED
 JV7020* NAD 83(2011) EPOCH   -  2010.00
 JV7020* NAVD 88 ORTHO HEIGHT -    93.1   (meters)      305.    (feet) GPS OBS
 JV7020  ______________________________________________________________________
 JV7020  NAVD 88 orthometric height was determined with geoid model    GEOID96
 JV7020  GEOID HEIGHT    -        -32.642 (meters)                     GEOID96
 JV7020  GEOID HEIGHT    -        -32.646 (meters)                     GEOID18
 JV7020  NAD 83(2011) X  -  1,078,173.901 (meters)                     COMP
 JV7020  NAD 83(2011) Y  - -4,815,442.381 (meters)                     COMP
 JV7020  NAD 83(2011) Z  -  4,027,547.422 (meters)                     COMP
 JV7020  LAPLACE CORR    -          4.79  (seconds)                    DEFLEC18
 JV7020
 JV7020  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7020  Standards:
 JV7020         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7020            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7020  -------------------------------------------------------------------
 JV7020  NETWORK    1.87   4.04           0.89   0.56   2.06     -0.10619399
 JV7020  -------------------------------------------------------------------
 JV7020  Click here for local accuracies and other accuracy information.
 JV7020
 JV7020.This mark is at Frederick Airport (FDK)
 JV7020
 JV7020.The horizontal coordinates were established by GPS observations
 JV7020.and adjusted by the National Geodetic Survey in June 2012.
 JV7020
 JV7020.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7020.been affixed to the stable North American tectonic plate. See 
 JV7020.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7020
 JV7020.The horizontal coordinates are valid at the epoch date displayed above
 JV7020.which is a decimal equivalence of Year/Month/Day.
 JV7020
 JV7020.The orthometric height was determined by GPS observations and a
 JV7020.high-resolution geoid model.
 JV7020
 JV7020.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7020.GEOID18 height accuracy estimate available here.
 JV7020
 JV7020.Click photographs - Photos may exist for this station.
 JV7020
 JV7020.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7020
 JV7020.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7020
 JV7020.The ellipsoidal height was determined by GPS observations
 JV7020.and is referenced to NAD 83.
 JV7020
 JV7020. The following values were computed from the NAD 83(2011) position.
 JV7020
 JV7020;                    North         East     Units Scale Factor Converg.
 JV7020;SPC MD       -   193,488.044   367,301.923   MT  0.99999310   -0 14 17.8
 JV7020;SPC MD       -   634,802.02  1,205,056.39   sFT  0.99999310   -0 14 17.8
 JV7020;UTM  18      - 4,364,875.601   295,121.270   MT  1.00011684   -1 30 40.5
 JV7020
 JV7020!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7020!SPC MD       -   0.99999050  x   0.99999310  =   0.99998360
 JV7020!UTM  18      -   0.99999050  x   1.00011684  =   1.00010734
 JV7020
 JV7020_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9512164875(NAD 83)
 JV7020
 JV7020                          SUPERSEDED SURVEY CONTROL
 JV7020
 JV7020  NAD 83(2007)-  39 24 32.67051(N)    077 22 46.77809(W) AD(2002.00) 0
 JV7020  ELLIP H (02/10/07)   60.546  (m)                       GP(2002.00)    
 JV7020  ELLIP H (08/19/02)   60.547  (m)                       GP(       ) 4 2
 JV7020  NAD 83(1991)-  39 24 32.67040(N)    077 22 46.77793(W) AD(       ) 1
 JV7020  ELLIP H (04/02/98)   60.561  (m)                       GP(       ) 4 2
 JV7020  NAD 83(1993)-  39 24 32.67036(N)    077 22 46.77789(W) AD(       ) 1
 JV7020  ELLIP H (11/30/95)   60.566  (m)                       GP(       ) 4 2
 JV7020  NAD 83(1991)-  39 24 32.67019(N)    077 22 46.77796(W) AD(       ) 2
 JV7020  ELLIP H (02/09/93)   60.463  (m)                       GP(       ) 4 2
 JV7020  NAVD 88 (11/30/95)   93.1    (m)  UNKNOWN  model used  GPS OBS        
 JV7020  NGVD 29              93.38   (m)          306.4    (f) LEVELING    3  
 JV7020
 JV7020.Superseded values are not recommended for survey control.
 JV7020
 JV7020.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7020.See file dsdata.pdf to determine how the superseded data were derived.
 JV7020
 JV7020_STAMPING: FDK A 1983
 JV7020_MARK LOGO: NOS
 JV7020_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7020+SATELLITE: SATELLITE OBSERVATIONS - August 19, 1994
 JV7020
 JV7020  HISTORY     - Date     Condition        Report By
 JV7020  HISTORY     - 1983     MONUMENTED       NOS
 JV7020  HISTORY     - 19910615 GOOD             NGS
 JV7020  HISTORY     - 19920716 GOOD
 JV7020  HISTORY     - 19940819 GOOD             NGS
 JV7020  HISTORY     - 20181024 MARK NOT FOUND   GEOPRO
 JV7020
 JV7020                          STATION DESCRIPTION
 JV7020
 JV7020'DESCRIBED BY NATIONAL OCEAN SERVICE 1983
 JV7020'THE STATION IS LOCATED ON THE EAST SIDE OF FREDERICK AT THE FREDERICK
 JV7020'MUNICIPAL AIRPORT NEAR RUNWAY ENDS 1 AND 5 ABOUT 300 FT (91.44 M)
 JV7020'SOUTHEAST OF THE CENTERLINE END OF RUNWAY 5.  TO REACH CONTACT THE
 JV7020'AIRPORT MANAGER FOR PERMISSION TO ACCESS THE AIRCRAFT OPERATIONS AREA
 JV7020'OF THE FREDERICK MUNICIPAL AIRPORT.  THE STATION MARK IS AN NOS BRONZE
 JV7020'DISK SET IN A CONCRETE MONUMENT FLUSH WITH GROUND LEVEL.  IT IS, 291.4
 JV7020'FT (88.82 M) SOUTH-SOUTHEAST OF THE FIRST RUNWAY LIGHT ON THE
 JV7020'SOUTHEAST SIDE OF RUNWAY 5, 236.2 FT (71.99 M) SOUTHEAST OF THE
 JV7020'SOUTHEASTERLY MOST THRESHOLD LIGHT AND 130.4 FT (39.75 M) NORTHWEST OF
 JV7020'THE NORTH END OF A CONCRETE HEADWALL.  DESCRIBED BY D.R. MCCONNELL.
 JV7020
 JV7020                          STATION RECOVERY (1991)
 JV7020
 JV7020'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV7020'THE STATION IS LOCATED AT THE FREDERICK MUNICIPAL AIRPORT NEAR RUNWAY
 JV7020'ENDS 1 AND 5 ABOUT 300 FT (91.4 M) SE OF CL END RWY 5.  THE STATION IS
 JV7020'LOCATED 236.2 FT (72.0 M) SOUTHEAST OF THE SOUTHEASTERLY MOST
 JV7020'THRESHOLD LIGHT, 291.4 FT (88.8 M) SSE OF THE FIRST RUNWAY LIGHT ON
 JV7020'THE SOUTHEAST SIDE OF THE RUNWAY, AND 130.4 FT (39.7 M) NW OF THE
 JV7020'NORTH END OF A CONCRETE HEADWALL.  THE STATION IS STANDARD NOS DISK
 JV7020'STAMPED FDK A 1983 AND SET IN THE TOP OF CONCRETE MONUMENT THAT IS SET
 JV7020'IN THE TOP OF A CONCRETE MONUMENT THAT IS SET FLUSH WITH THE GROUND.
 JV7020
 JV7020                          STATION RECOVERY (1992)
 JV7020
 JV7020'RECOVERED 1992
 JV7020'RECOVERED IN GOOD CONDITION.
 JV7020
 JV7020                          STATION RECOVERY (1994)
 JV7020
 JV7020'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (RAH)
 JV7020'THE STATION IS LOCATED ON THE FREDERICK MUNICIPAL AIRPORT LOCED ON THE
 JV7020'EASTERN SIDE OF THE CITY OF FREDERICK, MD.  ACCESS TO THE AIRPORT AND
 JV7020'THE STATIONS MUST BE OBTAINED FROM MR.  CHARLES M.  ABELL, AIRPORT
 JV7020'MANAGER, 111 AIRPORT DRIVE EAST, FREDERICK, MD 21701, PHONE (301)
 JV7020'846-2201 / 2202.  TO REACH THE STATION FROM THE AIRPORT ENTRANCE, TURN
 JV7020'RIGHT, SOUTH AT THE ENTRANCE AND PROCEED SOUTH FOR APPROXIMATELY 150
 JV7020'FT, (45.7 M) TURN LEFT, SOUTHEAST BETWEEN A HANGAR AND THE
 JV7020'INTERNATIONAL AVIATION INC.  BUILDING, CONTINUE EAST ON PARKING APRON
 JV7020'FOR 0.1 MI (0.2 KM) TO THE INTERSECTION OF THE EAST-WEST TAXIWAY AND
 JV7020'THE NORTHWEST-SOUTHEAST TAXIWAY (OLD RUNWAY 1-19) , TURN RIGHT,
 JV7020'SOUTHEAST ON NORTHWEST-SOUTHEAST TAXIWAY, AND PROCEED 0.25 MI (0.40
 JV7020'KM) (CROSSING RUNWAY 5-23) TO OLD RUNWAY END 1, TURN RIGHT SOUTHWEST
 JV7020'AT THE OLD END AND PROCEED IN THE GRASS FOR 0.15 MI (0.24 KM) TO
 JV7020'STATION NEAR RUNWAY END 5.  THE STATION IS 236.2 FT (72.0 M) SOUTHEAST
 JV7020'OF THE SOUTHEASTERLY-MOST THRESHOLD LIGHT (RWY 5) , 291.4 FT (88.8 M)
 JV7020'SOUTH SOUTHEAST OF THE FIRST RUNWAY LIGHT ON THE SOUTHSIDE OF THE
 JV7020'RUNWAY, AND 130.4 FEET (39.7 M) NORTHWEST OF THE NORTH END OF A
 JV7020'CONCRETE HEADWALL.  DESCRIBED BY KRN.
 JV7020
 JV7020                          STATION RECOVERY (2018)
 JV7020
 JV7020'RECOVERY NOTE BY GEOPRO CONSULTANTS LLC 2018 (CTS)
 JV7020'SUBSTANTIAL GRADING HAS BEEN PERFORMED AT STATION COORDINATE LOCATION,
 JV7020'MORE THAN 7.5 FT (2.3 M) OF DIRT HAS BEEN REMOVED.  STATION PRESUMED
 JV7020'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9250 ***********************************************************************
 AA9250  SACS        -  This is a Secondary Airport Control Station.
 AA9250  DESIGNATION -  FDK B
 AA9250  PID         -  AA9250
 AA9250  STATE/COUNTY-  MD/FREDERICK
 AA9250  COUNTRY     -  US
 AA9250  USGS QUAD   -  WALKERSVILLE (2016)
 AA9250
 AA9250                         *CURRENT SURVEY CONTROL
 AA9250  ______________________________________________________________________
 AA9250* NAD 83(2011) POSITION- 39 25 02.21203(N) 077 22 16.75131(W)   ADJUSTED
 AA9250* NAD 83(2011) ELLIP HT-    55.187 (meters)        (06/27/12)   ADJUSTED
 AA9250* NAD 83(2011) EPOCH   -  2010.00
 AA9250* NAVD 88 ORTHO HEIGHT -    87.80  (meters)      288.1   (feet) GPS OBS
 AA9250  ______________________________________________________________________
 AA9250  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AA9250  GEOID HEIGHT    -        -32.643 (meters)                     GEOID96
 AA9250  GEOID HEIGHT    -        -32.648 (meters)                     GEOID18
 AA9250  NAD 83(2011) X  -  1,078,747.509 (meters)                     COMP
 AA9250  NAD 83(2011) Y  - -4,814,716.903 (meters)                     COMP
 AA9250  NAD 83(2011) Z  -  4,028,247.900 (meters)                     COMP
 AA9250  LAPLACE CORR    -          5.00  (seconds)                    DEFLEC18
 AA9250
 AA9250  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9250  Standards:
 AA9250         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9250            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9250  -------------------------------------------------------------------
 AA9250  NETWORK    0.84   1.71           0.38   0.29   0.87     -0.11464435
 AA9250  -------------------------------------------------------------------
 AA9250  Click here for local accuracies and other accuracy information.
 AA9250
 AA9250.This mark is at Frederick Airport (FDK)
 AA9250
 AA9250.The horizontal coordinates were established by GPS observations
 AA9250.and adjusted by the National Geodetic Survey in June 2012.
 AA9250
 AA9250.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9250.been affixed to the stable North American tectonic plate. See 
 AA9250.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9250
 AA9250.The horizontal coordinates are valid at the epoch date displayed above
 AA9250.which is a decimal equivalence of Year/Month/Day.
 AA9250
 AA9250.The orthometric height was determined by GPS observations and a
 AA9250.high-resolution geoid model.
 AA9250
 AA9250.GPS derived orthometric heights for airport stations designated as
 AA9250.PACS or SACS are published to 2 decimal places.  This maintains
 AA9250.centimeter relative accuracy between the PACS and SACS.  It does
 AA9250.not indicate centimeter accuracy relative to other marks which are
 AA9250.part of the published vertical control network.
 AA9250
 AA9250.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9250.GEOID18 height accuracy estimate available here.
 AA9250
 AA9250.Click photographs - Photos may exist for this station.
 AA9250
 AA9250.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9250
 AA9250.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9250
 AA9250.The ellipsoidal height was determined by GPS observations
 AA9250.and is referenced to NAD 83.
 AA9250
 AA9250. The following values were computed from the NAD 83(2011) position.
 AA9250
 AA9250;                    North         East     Units Scale Factor Converg.
 AA9250;SPC MD       -   194,396.126   368,023.955   MT  0.99999444   -0 13 59.0
 AA9250;SPC MD       -   637,781.29  1,207,425.26   sFT  0.99999444   -0 13 59.0
 AA9250;UTM  18      - 4,365,767.526   295,863.389   MT  1.00011310   -1 30 22.4
 AA9250
 AA9250!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9250!SPC MD       -   0.99999134  x   0.99999444  =   0.99998578
 AA9250!UTM  18      -   0.99999134  x   1.00011310  =   1.00010444
 AA9250
 AA9250_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9586365767(NAD 83)
 AA9250
 AA9250                          SUPERSEDED SURVEY CONTROL
 AA9250
 AA9250  NAD 83(2007)-  39 25 02.21189(N)    077 22 16.75194(W) AD(2002.00) 0
 AA9250  ELLIP H (02/10/07)   55.199  (m)                       GP(2002.00)    
 AA9250  ELLIP H (08/19/02)   55.204  (m)                       GP(       ) 4 2
 AA9250  NAD 83(1991)-  39 25 02.21170(N)    077 22 16.75177(W) AD(       ) 1
 AA9250  ELLIP H (04/02/98)   55.218  (m)                       GP(       ) 4 2
 AA9250  NAD 83(1993)-  39 25 02.21166(N)    077 22 16.75173(W) AD(       ) 1
 AA9250  ELLIP H (11/30/95)   55.223  (m)                       GP(       ) 4 2
 AA9250  NAVD 88 (11/30/95)   87.76   (m)  GEOID93  model used  GPS OBS        
 AA9250
 AA9250.Superseded values are not recommended for survey control.
 AA9250
 AA9250.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9250.See file dsdata.pdf to determine how the superseded data were derived.
 AA9250
 AA9250_MARKER: DD = SURVEY DISK
 AA9250_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA9250_STAMPING: FDK B 1983
 AA9250_MARK LOGO: NOS
 AA9250_PROJECTION: FLUSH
 AA9250_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9250_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA9250+STABILITY: SURFACE MOTION
 AA9250_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9250+SATELLITE: SATELLITE OBSERVATIONS - June 17, 2020
 AA9250
 AA9250  HISTORY     - Date     Condition        Report By
 AA9250  HISTORY     - 1983     MONUMENTED       NOS
 AA9250  HISTORY     - 19911107 GOOD             NGS
 AA9250  HISTORY     - 19940819 GOOD             NGS
 AA9250  HISTORY     - 20141201 GOOD             NAGEL
 AA9250  HISTORY     - 20200617 GOOD             GEOPRO
 AA9250
 AA9250                          STATION DESCRIPTION
 AA9250
 AA9250'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991 (DAH)
 AA9250'THE STATION IS LOCATED IN THE NORTHEAST PART OF THE NEAR RUNWAY END
 AA9250'23.  IT IS ABOUT 1430 FT (435.9 M) SOUTHWEST OF THE CENTERLINE END OF
 AA9250'RWY 23, 197.3 FT (60.1 M) NORTHEAST OF THE FIRST RUNWAY LIGHT
 AA9250'SOUTHWEST OF CONNECTING TAXIWAY, 143.0 FT (43.6 M) SOUTHEAST OF THE
 AA9250'CENTERLINE OF THE RUNWAY, 101.3 FT (30.9 M) SOUTH OF THE FIRST RUNWAY
 AA9250'LIGHT NORTHEAST OF THE CONNECTING TAXIWAY, AND 68.1 FT (20.8 M) SOUTH
 AA9250'OF THE SOUTH SUPPORT OF THE OUTBOARD ONE OF THE SOUTHWEST VASI (23).
 AA9250'IT IS A STANDARD NOS DISK STAMPED, FDK B 1983 AND SET IN THE TOP OF
 AA9250'SQUARE CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND.
 AA9250
 AA9250                          STATION RECOVERY (1994)
 AA9250
 AA9250'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (RAH)
 AA9250'THE STATION IS LOCATED ON THE FREDERICK MUNICIPAL AIRPORT LOCED ON THE
 AA9250'EASTERN SIDE OF THE CITY OF FREDERICK, MD.  ACCESS TO THE AIRPORT AND
 AA9250'THE STATIONS MUST BE OBTAINED FROM MR.  CHARLES M.  ABELL, AIRPORT
 AA9250'MANAGER, 111 AIRPORT DRIVE EAST, FREDERICK, MD 21701, PHONE (301)
 AA9250'846-2201 / 2202.
 AA9250'
 AA9250'TO REACH THE STATION FROM THE AIRPORT ENTRANCE, TURN RIGHT, SOUTH AT
 AA9250'THE ENTRANCE AND PROCEED SOUTH FOR APPROXIMATELY 150 FT, (45.7 M) TURN
 AA9250'LEFT, SOUTHEAST BETWEEN A HANGAR AND THE INTERNATIONAL AVIATION INC.
 AA9250'BUILDING, CONTINUE EAST ON PARKING APRON FOR 0.1 MI (0.2 KM) TO THE
 AA9250'INTERSECTION OF THE EAST-WEST TAXIWAY, CONTINUE EAST ON EAST-WEST
 AA9250'TAXIWAY FOR 0.2 MI (0.3 KM) TO PARALLEL TAXIWAY TO RUNWAY 5-23, TURN
 AA9250'LEFT NORTH NORTHEAST ON PARALLEL TAXIWAY AND PROCEED 0.2 MI (0.3 KM)
 AA9250'TO A EAST WEST CONNECTING TAXIWAY, TURN RIGHT AND PROCEED ACCROSS
 AA9250'RUNWAY 5-23 TO THE STATION.
 AA9250'
 AA9250'THE STATION IS 143.0 FT (43.6 M) SOUTHEAST OF THE CENTERLINE OF RUNWAY
 AA9250'4-23, 197.3 FEET (60.1 M) NORTHEAST OF THE FIRST RUNWAY LIGHT
 AA9250'SOUTHWEST OF A CONNECTING TAXIWAY, 101.3 FT (30.9 M) SOUTHOF THE FIRST
 AA9250'RUNWAY LIGHT NORTHEAST OF THE CONNECTING TAXIWAY, AND 68.1 FT (20.8 M)
 AA9250'SOUTH OF THE SOUTH SUPPORT LEG OF THE OUTBOARD ONE OF THE SOUTHWESTERN
 AA9250'VASI (23) .  DESCRIBED BY KRN.
 AA9250
 AA9250                          STATION RECOVERY (2014)
 AA9250
 AA9250'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2014 (GEN)
 AA9250'RECOVERED IN GOOD CONDITION.
 AA9250
 AA9250                          STATION RECOVERY (2020)
 AA9250
 AA9250'RECOVERY NOTE BY GEOPRO CONSULTANTS LLC 2020 (CTS)
 AA9250'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7021 ***********************************************************************
 JV7021  DESIGNATION -  FDK C
 JV7021  PID         -  JV7021
 JV7021  STATE/COUNTY-  MD/FREDERICK
 JV7021  COUNTRY     -  US
 JV7021  USGS QUAD   -  FREDERICK (2016)
 JV7021
 JV7021                         *CURRENT SURVEY CONTROL
 JV7021  ______________________________________________________________________
 JV7021* NAD 83(2011) POSITION- 39 25 14.13636(N) 077 22 34.92997(W)   ADJUSTED
 JV7021* NAD 83(2011) ELLIP HT-    54.420 (meters)        (06/27/12)   ADJUSTED
 JV7021* NAD 83(2011) EPOCH   -  2010.00
 JV7021* NAVD 88 ORTHO HEIGHT -    87.1   (meters)      286.    (feet) GPS OBS
 JV7021  ______________________________________________________________________
 JV7021  NAVD 88 orthometric height was determined with an earlier geoid model
 JV7021  GEOID HEIGHT    -        -32.669 (meters)                     GEOID18
 JV7021  NAD 83(2011) X  -  1,078,272.008 (meters)                     COMP
 JV7021  NAD 83(2011) Y  - -4,814,583.509 (meters)                     COMP
 JV7021  NAD 83(2011) Z  -  4,028,531.507 (meters)                     COMP
 JV7021  LAPLACE CORR    -          4.69  (seconds)                    DEFLEC18
 JV7021
 JV7021  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7021  Standards:
 JV7021         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7021            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7021  -------------------------------------------------------------------
 JV7021  NETWORK    2.17   4.06           1.04   0.62   2.07     -0.04621739
 JV7021  -------------------------------------------------------------------
 JV7021  Click here for local accuracies and other accuracy information.
 JV7021
 JV7021.This mark is at Frederick Airport (FDK)
 JV7021
 JV7021.The horizontal coordinates were established by GPS observations
 JV7021.and adjusted by the National Geodetic Survey in June 2012.
 JV7021
 JV7021.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7021.been affixed to the stable North American tectonic plate. See 
 JV7021.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7021
 JV7021.The horizontal coordinates are valid at the epoch date displayed above
 JV7021.which is a decimal equivalence of Year/Month/Day.
 JV7021
 JV7021.The orthometric height was determined by GPS observations and a
 JV7021.high-resolution geoid model.
 JV7021
 JV7021.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7021.GEOID18 height accuracy estimate available here.
 JV7021
 JV7021.Click photographs - Photos may exist for this station.
 JV7021
 JV7021.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7021
 JV7021.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7021
 JV7021.The ellipsoidal height was determined by GPS observations
 JV7021.and is referenced to NAD 83.
 JV7021
 JV7021. The following values were computed from the NAD 83(2011) position.
 JV7021
 JV7021;                    North         East     Units Scale Factor Converg.
 JV7021;SPC MD       -   194,765.647   367,590.627   MT  0.99999499   -0 14 10.4
 JV7021;SPC MD       -   638,993.63  1,206,003.58   sFT  0.99999499   -0 14 10.4
 JV7021;UTM  18      - 4,366,146.629   295,438.328   MT  1.00011524   -1 30 34.3
 JV7021
 JV7021!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7021!SPC MD       -   0.99999146  x   0.99999499  =   0.99998645
 JV7021!UTM  18      -   0.99999146  x   1.00011524  =   1.00010670
 JV7021
 JV7021:                Primary Azimuth Mark                     Grid Az
 JV7021:SPC MD       -  STRIP                                    200 19 32.9
 JV7021:UTM  18      -  STRIP                                    201 35 56.8
 JV7021
 JV7021_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9543866146(NAD 83)
 JV7021
 JV7021|---------------------------------------------------------------------|
 JV7021| PID    Reference Object                     Distance      Geod. Az  |
 JV7021|                                                           dddmmss.s |
 JV7021| JV4614 STRIP                               APPROX. 0.6 KM 2000522.5 |
 JV7021|---------------------------------------------------------------------|
 JV7021
 JV7021                          SUPERSEDED SURVEY CONTROL
 JV7021
 JV7021  NAD 83(2007)-  39 25 14.13627(N)    077 22 34.93055(W) AD(2002.00) 0
 JV7021  ELLIP H (02/10/07)   54.428  (m)                       GP(2002.00)    
 JV7021  ELLIP H (10/29/02)   54.438  (m)                       GP(       ) 4 2
 JV7021  ELLIP H (10/15/98)   54.452  (m)                       GP(       ) 4 2
 JV7021  NAD 83(1991)-  39 25 14.13597(N)    077 22 34.93034(W) AD(       ) 2
 JV7021  ELLIP H (02/09/93)   54.337  (m)                       GP(       ) 4 2
 JV7021  NGVD 29              87.27   (m)          286.3    (f) LEVELING    3  
 JV7021
 JV7021.Superseded values are not recommended for survey control.
 JV7021
 JV7021.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7021.See file dsdata.pdf to determine how the superseded data were derived.
 JV7021
 JV7021_STAMPING: FDK C 1983
 JV7021_MARK LOGO: NGS
 JV7021_PROJECTION: FLUSH
 JV7021_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7021+SATELLITE: SATELLITE OBSERVATIONS - December 01, 2014
 JV7021
 JV7021  HISTORY     - Date     Condition        Report By
 JV7021  HISTORY     - 1983     MONUMENTED       NOS
 JV7021  HISTORY     - 19910915 GOOD             NGS
 JV7021  HISTORY     - 19920716 GOOD
 JV7021  HISTORY     - 19981006 GOOD             NGS
 JV7021  HISTORY     - 20141201 GOOD             NAGEL
 JV7021  HISTORY     - 20190617 MARK NOT FOUND   GEOPRO
 JV7021
 JV7021                          STATION DESCRIPTION
 JV7021
 JV7021'DESCRIBED BY NATIONAL OCEAN SERVICE 1983
 JV7021'THE STATION IS LOCATED ON THE EAST SIDE OF FREDERICK ON THE NORTH PART
 JV7021'OF THE FREDERICK MUNICIPAL AIRPORT SOUTHEAST OF OLD RUNWAY END 19
 JV7021'WHICH NOW SERVES AS A TAXIWAY.  TO REACH THE STATION CONTACT THE
 JV7021'AIRPORT MANAGER AT THE FREDERICK MUNICIPAL AIRPORT FOR PERMISSION AND
 JV7021'CLEARANCE TO ACCESS THE AIRCRAFT OPERATIONS AREA.  THE STATION MARK IS
 JV7021'AN NOS BRONZE DISK SET IN A SQUARE CONCRETE MONUMENT FLUSH WITH THE
 JV7021'GROUND.  IT IS, 258.5 FT (78.79 M) SOUTHWEST OF A PK NAIL DRIVEN INTO
 JV7021'THE CENTERLINE INTERSECTION OF TWO TAXIWAYS, 221.4 FT (67.48 M) EAST
 JV7021'OF THE EAST EDGE OF THE TAXIWAY (FORMERLY RUNWAY 1-19) AND 58 FT
 JV7021'(17.68 M) WEST OF THE SOUTH END OF A DITCH IN THE GRASS INFIELD.
 JV7021'DESCRIBED BY DRM AND REDECRIBED BY JLD IN 9/91.
 JV7021
 JV7021                          STATION RECOVERY (1991)
 JV7021
 JV7021'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991 (JLD)
 JV7021'THE STATION IS LOCATED SE OF OLD RUNWAY END 19.  THE STATION IS 258.5
 JV7021'FT (78.8 M) SW OF A PK NAIL IN THE CL INTERSECTION OF TWO TAXIWAYS,
 JV7021'221.4 FT (67.5 M) E OF THE E EDGE OF THE TAXIWAY (FORMERLY RWY 1-19)
 JV7021'AND 58 FT (17.7 M) W OF THE S END OF A DITCH.  THE STATION IS A
 JV7021'STANDARD NOS DISK STAMPED FDK C 1983, SET IN THE TOP OF A SQUARE
 JV7021'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7021
 JV7021                          STATION RECOVERY (1992)
 JV7021
 JV7021'RECOVERED 1992
 JV7021'RECOVERED IN GOOD CONDITION.
 JV7021
 JV7021                          STATION RECOVERY (1998)
 JV7021
 JV7021'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (AJL)
 JV7021'THE STATION IS LOCATED ON THE EAST SIDE OF FREDERICK ON THE NORTH PART
 JV7021'OF THE FREDERICK MUNICIPAL AIRPORT SOUTHEAST OF OLD RUNWAY END 19
 JV7021'WHICH NOW SERVES AS A TAXIWAY.  TO REACH THE STATION CONTACT THE
 JV7021'AIRPORT MANAGER AT THE FREDERICK MUNICIPAL AIRPORT FOR PERMISSION AND
 JV7021'CLEARANCE TO ACCESS THE AIRCRAFT OPERATIONS AREA.  THE STATION MARK IS
 JV7021'AN NOS BRONZE DISK SET IN A SQUARE CONCRETE MONUMENT FLUSH WITH THE
 JV7021'GROUND.  IT IS, 258.5 FT (78.8 M) SOUTHWEST OF A PK NAIL DRIVEN INTO
 JV7021'THE CENTERLINE INTERSECTION OF TWO TAXIWAYS, 221.4 FT (67.5 M) EAST OF
 JV7021'THE EAST EDGE OF THE TAXIWAY (FORMERLY RUNWAY 1-19) AND 58 FT (17.7 M)
 JV7021'WEST OF THE SOUTH END OF A DITCH IN THE GRASS INFIELD.
 JV7021
 JV7021                          STATION RECOVERY (2014)
 JV7021
 JV7021'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2014 (GEN)
 JV7021'RECOVERED IN GOOD CONDITION.
 JV7021
 JV7021                          STATION RECOVERY (2019)
 JV7021
 JV7021'RECOVERY NOTE BY GEOPRO CONSULTANTS LLC 2019 (CTS)
 JV7021'MARK NOT FOUND. STATION IS KNOWN TO HAVE BEEN BY HEAVY REGRADING IN
 JV7021'VICINITY OF PUBLISHED COORDINATES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR6191 ***********************************************************************
 DR6191  SACS        -  This is a Secondary Airport Control Station.
 DR6191  DESIGNATION -  FDK D
 DR6191  PID         -  DR6191
 DR6191  STATE/COUNTY-  MD/FREDERICK
 DR6191  COUNTRY     -  US
 DR6191  USGS QUAD   -  FREDERICK (2016)
 DR6191
 DR6191                         *CURRENT SURVEY CONTROL
 DR6191  ______________________________________________________________________
 DR6191* NAD 83(2011) POSITION- 39 25 16.52934(N) 077 22 39.53084(W)   ADJUSTED
 DR6191* NAD 83(2011) ELLIP HT-    54.727 (meters)        (08/12/20)   ADJUSTED
 DR6191* NAD 83(2011) EPOCH   -  2010.00
 DR6191* NAVD 88 ORTHO HEIGHT -    87.40  (meters)      286.7   (feet) GPS OBS
 DR6191  ______________________________________________________________________
 DR6191  GEOID HEIGHT    -        -32.673 (meters)                     GEOID18
 DR6191  NAD 83(2011) X  -  1,078,154.426 (meters)                     COMP
 DR6191  NAD 83(2011) Y  - -4,814,562.060 (meters)                     COMP
 DR6191  NAD 83(2011) Z  -  4,028,588.712 (meters)                     COMP
 DR6191  LAPLACE CORR    -          4.61  (seconds)                    DEFLEC18
 DR6191
 DR6191  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR6191  Standards:
 DR6191         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR6191            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR6191  -------------------------------------------------------------------
 DR6191  NETWORK    0.93   1.84           0.42   0.33   0.94     -0.14759499
 DR6191  -------------------------------------------------------------------
 DR6191  Click here for local accuracies and other accuracy information.
 DR6191
 DR6191.This mark is at Frederick Airport (FDK)
 DR6191
 DR6191.The horizontal coordinates were established by GPS observations
 DR6191.and adjusted by the GEOPRO CONSULTANTS LLC in August 2020.
 DR6191
 DR6191.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR6191.been affixed to the stable North American tectonic plate. See 
 DR6191.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR6191
 DR6191.The horizontal coordinates are valid at the epoch date displayed above
 DR6191.which is a decimal equivalence of Year/Month/Day.
 DR6191
 DR6191.The orthometric height was determined by GPS observations and a
 DR6191.high-resolution geoid model.
 DR6191
 DR6191.GPS derived orthometric heights for airport stations designated as
 DR6191.PACS or SACS are published to 2 decimal places.  This maintains
 DR6191.centimeter relative accuracy between the PACS and SACS.  It does
 DR6191.not indicate centimeter accuracy relative to other marks which are
 DR6191.part of the published vertical control network.
 DR6191
 DR6191.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR6191.GEOID18 height accuracy estimate available here.
 DR6191
 DR6191.Click photographs - Photos may exist for this station.
 DR6191
 DR6191.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR6191
 DR6191.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR6191
 DR6191.The ellipsoidal height was determined by GPS observations
 DR6191.and is referenced to NAD 83.
 DR6191
 DR6191. The following values were computed from the NAD 83(2011) position.
 DR6191
 DR6191;                    North         East     Units Scale Factor Converg.
 DR6191;SPC MD       -   194,839.899   367,480.882   MT  0.99999510   -0 14 13.3
 DR6191;SPC MD       -   639,237.24  1,205,643.53   sFT  0.99999510   -0 14 13.3
 DR6191;UTM  18      - 4,366,223.311   295,330.247   MT  1.00011578   -1 30 37.3
 DR6191
 DR6191!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR6191!SPC MD       -   0.99999141  x   0.99999510  =   0.99998651
 DR6191!UTM  18      -   0.99999141  x   1.00011578  =   1.00010719
 DR6191
 DR6191_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9533066223(NAD 83)
 DR6191
 DR6191                          SUPERSEDED SURVEY CONTROL
 DR6191
 DR6191.No superseded survey control is available for this station.
 DR6191
 DR6191_MARKER: Z = SEE DESCRIPTION
 DR6191_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 DR6191_SP_SET: MASSIVE CONCRETE CATCH BASIN
 DR6191_STAMPING: FDK D 2020
 DR6191_MARK LOGO: GEOPRO
 DR6191_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR6191_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR6191_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR6191+SATELLITE: SATELLITE OBSERVATIONS - June 17, 2020
 DR6191
 DR6191  HISTORY     - Date     Condition        Report By
 DR6191  HISTORY     - 20200617 MONUMENTED       GEOPRO
 DR6191
 DR6191                          STATION DESCRIPTION
 DR6191
 DR6191'DESCRIBED BY GEOPRO CONSULTANTS LLC 2020 (CTS)
 DR6191'THE STATION IS LOCATED ABOUT 6.3 MI (10.1 KM) WEST-NORTHWEST OF NEW
 DR6191'MARKET, 4.7 MI (7.6 KM) SOUTH-SOUTHWEST OF WALKERSVILLE AND 1.8 MI
 DR6191'(2.9 KM) EAST-NORTHEAST OF FREDERICK AT THE FREDERICK MUNICIPAL
 DR6191'AIRPORT IN THE CITY OF FREDERICK, MARYLAND IN THE GRASS AREA NORTH OF
 DR6191'THE T-HANGERS ALONG TAXIWAY C.
 DR6191'
 DR6191'TO REACH THE STATION FROM THE INTERSECTION OF AVIATION WAY AND HUGHES
 DR6191'FORD ROAD, NEAR THE AIRPORT ADMINISTRATION BUILDING, PROCEED NORTH ON
 DR6191'AVIATION WAY FOR 0.41 MI (0.66 KM) TO END OF THE CUL-DE-SAC AND APRON
 DR6191'ACCESS ROAD (U-TURN) IMMEDIATELY AHEAD.  CONTINUE STRAIGHT ON THE
 DR6191'U-TURN ROAD AND PROCEED NORTH-EAST-SOUTH FOR APPROXIMATELY 200 FT
 DR6191'(61.0 M) TO THE T-HANGER APRON.  TURN LEFT AND PROCEED EAST ON THE
 DR6191'APRON FOR APPROXIMATELY 300 FT (94 M) TO THE INTERSECTION OF TAXIWAY
 DR6191'C.  TURN LEFT AND PROCEED NORTH ON TAXIWAY C FOR 150 FT (45.7 M) TO
 DR6191'THE STATION ON YOUR LEFT.
 DR6191'
 DR6191'THE STATION IS A BRASS DISK EPOXIED IN THE SOUTHWEST CORNER OF A 16 FT
 DR6191'(4.9 M) DEEP CONCRETE CATCH BASIN, THE STATION IS LOCATED 201.8 FT
 DR6191'(61.5 M) NORTHWEST OF THE NORTHEAST CORNER OF THE NORTHERN MOST
 DR6191'T-HANGER, 140.2 FT (42.7 M) NORTH OF THE NORTH EDGE OF PAVEMENT OF THE
 DR6191'T-HANGER APRON, 70.9 FT (21.6 M) EAST OF THE EASTERN EDGE OF PAVEMENT
 DR6191'OF AN UNNAMED NORTH-SOUTH TAXIWAY, 49.1 FT (15.0 M) WEST OF THE CENTER
 DR6191'OF A ROUND MANHOLE SET IN THE CENTER OF THE SOUTHEASTERN MOST OF FOUR
 DR6191'CONCRETE PADS AND 2.0 FT (0.6 M) NORTHEAST OF THE SOUTHWEST CORNER OF
 DR6191'THE CONCRETE CATCH BASIN.
 DR6191'
 DR6191'THIS STATION IS DESIGNATED AS A SECONDARY AIRPORT CONTROL STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6754 ***********************************************************************
 JV6754  DESIGNATION -  FEDERAL
 JV6754  PID         -  JV6754
 JV6754  STATE/COUNTY-  MD/HARFORD
 JV6754  COUNTRY     -  US
 JV6754  USGS QUAD   -  FAWN GROVE (2019)
 JV6754
 JV6754                         *CURRENT SURVEY CONTROL
 JV6754  ______________________________________________________________________
 JV6754* NAD 83(2011) POSITION- 39 37 41.23330(N) 076 27 55.81684(W)   ADJUSTED
 JV6754* NAD 83(2011) ELLIP HT-   168.332 (meters)        (06/27/12)   ADJUSTED
 JV6754* NAD 83(2011) EPOCH   -  2010.00
 JV6754* NAVD 88 ORTHO HEIGHT -   200.9   (meters)      659.    (feet) VERTCON3
 JV6754  ______________________________________________________________________
 JV6754  GEOID HEIGHT    -        -32.543 (meters)                     GEOID18
 JV6754  NAD 83(2011) X  -  1,151,261.642 (meters)                     COMP
 JV6754  NAD 83(2011) Y  - -4,782,663.015 (meters)                     COMP
 JV6754  NAD 83(2011) Z  -  4,046,376.904 (meters)                     COMP
 JV6754  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 JV6754
 JV6754  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6754  Standards:
 JV6754         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6754            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6754  -------------------------------------------------------------------
 JV6754  NETWORK    1.33   4.23           0.59   0.47   2.16      0.31104307
 JV6754  -------------------------------------------------------------------
 JV6754  Click here for local accuracies and other accuracy information.
 JV6754
 JV6754.The horizontal coordinates were established by GPS observations
 JV6754.and adjusted by the National Geodetic Survey in June 2012.
 JV6754
 JV6754.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6754.been affixed to the stable North American tectonic plate. See 
 JV6754.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6754
 JV6754.The horizontal coordinates are valid at the epoch date displayed above
 JV6754.which is a decimal equivalence of Year/Month/Day.
 JV6754
 JV6754.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6754.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6754
 JV6754.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6754.GEOID18 height accuracy estimate available here.
 JV6754
 JV6754.Click photographs - Photos may exist for this station.
 JV6754
 JV6754.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6754
 JV6754.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6754
 JV6754.The ellipsoidal height was determined by GPS observations
 JV6754.and is referenced to NAD 83.
 JV6754
 JV6754. The following values were computed from the NAD 83(2011) position.
 JV6754
 JV6754;                    North         East     Units Scale Factor Converg.
 JV6754;SPC MD       -   217,874.297   445,890.640   MT  1.00003602   +0 20 07.7
 JV6754;SPC MD       -   714,809.26  1,462,892.87   sFT  1.00003602   +0 20 07.7
 JV6754;UTM  18      - 4,387,509.578   374,226.416   MT  0.99979476   -0 56 05.4
 JV6754
 JV6754!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6754!SPC MD       -   0.99997359  x   1.00003602  =   1.00000961
 JV6754!UTM  18      -   0.99997359  x   0.99979476  =   0.99976836
 JV6754
 JV6754:                Primary Azimuth Mark                     Grid Az
 JV6754:SPC MD       -  FEDERAL AZ MK                            211 09 59.2
 JV6754:UTM  18      -  FEDERAL AZ MK                            212 26 12.3
 JV6754
 JV6754_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7422687509(NAD 83)
 JV6754
 JV6754|---------------------------------------------------------------------|
 JV6754| PID    Reference Object                     Distance      Geod. Az  |
 JV6754|                                                           dddmmss.s |
 JV6754| JV6755 FEDERAL AZ MK                       APPROX. 0.7 KM 2113006.9 |
 JV6754|---------------------------------------------------------------------|
 JV6754
 JV6754                          SUPERSEDED SURVEY CONTROL
 JV6754
 JV6754  NAD 83(2007)-  39 37 41.23345(N)    076 27 55.81766(W) AD(2002.00) 0
 JV6754  ELLIP H (02/10/07)  168.348  (m)                       GP(2002.00)    
 JV6754  ELLIP H (09/18/02)  168.368  (m)                       GP(       ) 4 2
 JV6754  NAD 83(1991)-  39 37 41.23345(N)    076 27 55.81635(W) AD(       ) 1
 JV6754  ELLIP H (01/27/92)  168.351  (m)                       GP(       ) 4 1
 JV6754  NAD 83(1986)-  39 37 41.22645(N)    076 27 55.82282(W) AD(       ) 1
 JV6754  NGVD 29 (06/18/91)  201.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6754
 JV6754.Superseded values are not recommended for survey control.
 JV6754
 JV6754.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6754.See file dsdata.pdf to determine how the superseded data were derived.
 JV6754
 JV6754_MARKER: DD = SURVEY DISK
 JV6754_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6754_STAMPING: 137 FEDERAL 1989
 JV6754_MARK LOGO: MD-025
 JV6754_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6754_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6754+STABILITY: SURFACE MOTION
 JV6754_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6754+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6754
 JV6754  HISTORY     - Date     Condition        Report By
 JV6754  HISTORY     - 1989     MONUMENTED       RDA
 JV6754
 JV6754                          STATION DESCRIPTION
 JV6754
 JV6754'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6754'THE STATION IS LOCATED IN WEST CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6754'1.5 MILES NORTH NORTHEAST OF THE VILLAGE OF JARRETTSVILLE.
 JV6754'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 23, STATE
 JV6754'HIGHWAY 165 AND JARRETTSVILLE ROAD IN JARRETSVILLE PROCEED NORTH ALONG
 JV6754'HIGHWAY 165 1.48 MILES TO ITS INTERSECTION WITH OLD FEDERAL HILL ROAD.
 JV6754'TURN RIGHT AND PROCEED EAST ALONG OLD FEDERAL HILL ROAD 0.47 MILES TO
 JV6754'THE STATION ON THE RIGHT.
 JV6754'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6754'ABOUT 1 INCH BELOW GROUND STAMPED 137 FEDERAL 1989.  THE STATION IS
 JV6754'30.4 FEET SOUTHWEST OF THE CENTERLINE OF OLD FEDERAL HILL ROAD, 54.0
 JV6754'FEET SOUTHEAST OF AN 8 INCH MAPLE TREE, AND 102.0 FEET WEST OF A POWER
 JV6754'POLE WITH NO NUMBER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2056 ***********************************************************************
 HU2056  DESIGNATION -  FEDERAL 2
 HU2056  PID         -  HU2056
 HU2056  STATE/COUNTY-  MD/CAROLINE
 HU2056  COUNTRY     -  US
 HU2056  USGS QUAD   -  FEDERALSBURG (2016)
 HU2056
 HU2056                         *CURRENT SURVEY CONTROL
 HU2056  ______________________________________________________________________
 HU2056* NAD 83(1991) POSITION- 38 41 25.81867(N) 075 47 11.57061(W)   ADJUSTED
 HU2056* NAVD 88 ORTHO HEIGHT -    12.922 (meters)       42.39  (feet) ADJUSTED
 HU2056  ______________________________________________________________________
 HU2056  GEOID HEIGHT    -        -35.311 (meters)                     GEOID18
 HU2056  LAPLACE CORR    -         -3.06  (seconds)                    DEFLEC18
 HU2056  DYNAMIC HEIGHT  -         12.914 (meters)       42.37  (feet) COMP
 HU2056  MODELED GRAVITY -    980,022.0   (mgal)                       NAVD 88
 HU2056
 HU2056  HORZ ORDER      -  SECOND
 HU2056  VERT ORDER      -  SECOND    CLASS I
 HU2056
 HU2056.The horizontal coordinates were established by classical geodetic methods
 HU2056.and adjusted by the National Geodetic Survey in January 1992.
 HU2056
 HU2056.The orthometric height was determined by differential leveling and
 HU2056.adjusted by the NATIONAL GEODETIC SURVEY
 HU2056.in December 2004.
 HU2056
 HU2056.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2056.GEOID18 height accuracy estimate available here.
 HU2056
 HU2056.Click photographs - Photos may exist for this station.
 HU2056
 HU2056.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2056
 HU2056.The dynamic height is computed by dividing the NAVD 88
 HU2056.geopotential number by the normal gravity value computed on the
 HU2056.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2056.degrees latitude (g = 980.6199 gals.).
 HU2056
 HU2056.The modeled gravity was interpolated from observed gravity values.
 HU2056
 HU2056. The following values were computed from the NAD 83(1991) position.
 HU2056
 HU2056;                    North         East     Units Scale Factor Converg.
 HU2056;SPC MD       -   114,351.708   505,565.580   MT  0.99995505   +0 45 41.8
 HU2056;SPC MD       -   375,168.90  1,658,676.41   sFT  0.99995505   +0 45 41.8
 HU2056;UTM  18      - 4,282,726.040   431,595.293   MT  0.99965762   -0 29 30.1
 HU2056
 HU2056!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2056!SPC MD       -   1.00000351  x   0.99995505  =   0.99995856
 HU2056!UTM  18      -   1.00000351  x   0.99965762  =   0.99966113
 HU2056
 HU2056:                Primary Azimuth Mark                     Grid Az
 HU2056:SPC MD       -  PRATTIS                                  333 35 06.1
 HU2056:UTM  18      -  PRATTIS                                  334 50 18.0
 HU2056
 HU2056_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3159582726(NAD 83)
 HU2056
 HU2056|---------------------------------------------------------------------|
 HU2056| PID    Reference Object                     Distance      Geod. Az  |
 HU2056|                                                           dddmmss.s |
 HU2056| HU1980 FOUNTAINVILLE INTERSTATE LOT        APPROX.13.6 KM 0245607.6 |
 HU2056| DC7283 FEDERAL 2 AZ MK                     208.679 METERS 09337     |
 HU2056| HU2057 FEDERALSBURG CAROLINE FARMS TK      APPROX. 0.8 KM 1145005.7 |
 HU2056| HU2047 SEAFORD DUPONT NYLON PLANT STK      APPROX.15.5 KM 1151445.7 |
 HU2056| DC7284 FEDERAL 2 RM 1                       73.345 METERS 15212     |
 HU2056| HU2054 FEDERAL                              51.387 METERS 15726     |
 HU2056| DC7285 FEDERAL 2 RM 2                       75.231 METERS 18544     |
 HU2056| DC7282 FEDERAL RM 3 AZIMUTH                               24615     |
 HU2056| HU2109 PRESTON C P TEL CO MAST             APPROX.11.4 KM 3084451.8 |
 HU2056| HU2105 PRATTIS                             APPROX.12.7 KM 3342047.9 |
 HU2056|---------------------------------------------------------------------|
 HU2056
 HU2056                          SUPERSEDED SURVEY CONTROL
 HU2056
 HU2056  NAD 83(1986)-  38 41 25.81336(N)    075 47 11.58776(W) AD(       ) 2
 HU2056  NAD 27      -  38 41 25.40200(N)    075 47 12.82060(W) AD(       ) 2
 HU2056  NGVD 29 (07/19/86)   12.8    (m)           42.     (f) VERT ANG       
 HU2056
 HU2056.Superseded values are not recommended for survey control.
 HU2056
 HU2056.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2056.See file dsdata.pdf to determine how the superseded data were derived.
 HU2056
 HU2056_MARKER: DS = TRIANGULATION STATION DISK
 HU2056_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2056_STAMPING: FEDERAL 2 1962
 HU2056_MARK LOGO: CGS
 HU2056_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2056_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2056+STABILITY: SURFACE MOTION
 HU2056_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2056+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2002
 HU2056
 HU2056  HISTORY     - Date     Condition        Report By
 HU2056  HISTORY     - 1962     MONUMENTED       CGS
 HU2056  HISTORY     - 20020606 GOOD             MDSHA
 HU2056
 HU2056                          STATION DESCRIPTION
 HU2056
 HU2056'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU2056'STATION IS LOCATED ABOUT 1.0 MILE WEST-SOUTHWEST OF CENTER OF
 HU2056'FEDERALSBURG MARYLAND, ON THE HURLOCK ROAD.
 HU2056'
 HU2056'TO REACH THE STATION FROM THE INTERSECTION OF MAIN STREET AND FEDERAL
 HU2056'AVE. IN FEDERALSBURG MARYLAND, GO SOUTH ON MAIN STREET, HIGHWAY 307
 HU2056'FOR 0.15 MILE TO A SIDE STREET RIGHT, TURN RIGHT, GO WEST ON
 HU2056'HIGHWAY 307 FOR 0.60 MILE TO AZIMUTH ON THE RIGHT, CONTINUE WEST ON
 HU2056'HIGHWAY 307 FOR 0.15 MILE TO A CINDER BLOCK BUILDING ON THE RIGHT
 HU2056'AND STATION. ON THE PROPERTY OWNED BY MR. WALTON.
 HU2056'
 HU2056'STATION MARK, A STANDARD DISK STAMPED FEDERAL 2 1962, SET IN THE TOP
 HU2056'OF A 10 X 10 INCH SQUARE CONCRETE MONUMENT, PROJECTING 2 INCHES FROM
 HU2056'GROUND SURFACE.  IT IS 49.7 FEET WEST OF A FENCE LINE.  95.0 FEET
 HU2056'NORTH OF THE NORTHEAST CORNER OF A CINDER BLOCK BUILDING.  16.0
 HU2056'FEET SOUTH OF A STANDARD METAL WITNESS POST.
 HU2056'
 HU2056'REFERENCE MARK NO. 1, A STANDARD DISK STAMPED FEDERAL 2 NO. 1 1962,
 HU2056'SET IN THE TOP OF A 10 X 10 INCH SQUARE CONCRETE MONUMENT,
 HU2056'PROJECTING 1 INCH FROM GROUND SURFACE.  IT IS 2.0 FEET WEST OF A
 HU2056'TELEPHONE POLE, NUMBER 42.  21.0 FEET SOUTH OF CENTER OF BLACKTOP
 HU2056'ROAD.  10.4 FEET SOUTHEAST OF A HIGHWAY SIGN.  110 FEET NORTHWEST
 HU2056'OF THE NORTHEAST CORNER OF A CINDER BLOCK BUILDING.
 HU2056'
 HU2056'REFERENCE MARK NO. 2, A STANDARD DISK STAMPED FEDERAL 2 NO. 2 1962,
 HU2056'SET IN THE TOP OF A 10 X 10 INCH SQUARE CONCRETE MONUMENT, THAT IS
 HU2056'FLUSH WITH THE GROUND SURFACE.  IT IS 32.0 FEET EAST OF CENTER OF A
 HU2056'DRIVEWAY.  16.8 FEET EAST OF A TELEPHONE POLE NUMBER 33.  24.0
 HU2056'FEET SOUTH OF CENTER OF BLACK TOP ROAD.  101.0 FEET
 HU2056'SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF A CINDER BLOCK BUILDING.
 HU2056'
 HU2056'AZIMUTH MARK, A STANDARD DISK STAMPED FEDERAL 2 1962, SET IN THE
 HU2056'TOP OF A 10 X 10 INCH SQUARE CONCRETE MONUMENT, THAT IS FLUSH WITH
 HU2056'THE GROUND SURFACE.  IT IS 2.3 FEET SOUTH OF A POWERLINE-POLE
 HU2056'NUMBER HF 75.  20.5 FEET SOUTH OF CENTER OF STATE HIGHWAY 307.
 HU2056'11.7 FEET EAST OF CENTER OF GRAVEL DRIVEWAY LEADING TO EASTERN
 HU2056'SHORE PUBLIC SERVICE TRANSFORMER STATION.
 HU2056'
 HU2056'HEIGHT OF LIGHT ABOVE STATION MARK 34.22 METERS.
 HU2056
 HU2056                          STATION RECOVERY (2002)
 HU2056
 HU2056'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2056'THE STATION IS LOCATED 1.0 MILE WEST-SOUTHWEST OF THE CENTER OF
 HU2056'FEDERALSBURG, MARYLAND.  TO REACH THE STATION FROM THE INTERSECTION OF
 HU2056'MAIN STREET AND CENTRAL AVENUE IN FEDERALSBURG, GO SOUTH ALONG MAIN
 HU2056'STREET FOR 0.15 MI (0.24 KM) TO SIDE ROAD RIGHT.  TURN RIGHT AND GO
 HU2056'WEST ALONG ACADEMY AVENUE FOR 0.75 MI (1.21 KM) TO A CINDER BLOCK
 HU2056'BUILDING AND THE STATION ON THE RIGHT.  THE STATION IS A STANDARD DISK
 HU2056'SET IN THE TOP OF A 12 INCH (30 CM) SQUARE CONCRETE MONUMENT WHICH IS
 HU2056'FLUSH WITH THE GROUND. IT IS 62.5 FT (19.1 M) NORTH OF THE NORTHEAST
 HU2056'CORNER OF THE CINDER BLOCK BUILDING, 16.0 FT (4.9 M) SOUTH OF A METAL
 HU2056'WITNESS POST, 3.2 FT (1.0 M) WEST OF A CARSONITE WITNESS POST AND 1.8
 HU2056'FT (0.5 M) NORTH OF A 8 INCH (20 CM) TWIN HICKORY TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DC7283 ***********************************************************************
 DC7283  DESIGNATION -  FEDERAL 2 AZ MK
 DC7283  PID         -  DC7283
 DC7283  STATE/COUNTY-  MD/CAROLINE
 DC7283  COUNTRY     -  US
 DC7283  USGS QUAD   -  FEDERALSBURG (2016)
 DC7283
 DC7283                         *CURRENT SURVEY CONTROL
 DC7283  ______________________________________________________________________
 DC7283* NAD 83(2011) POSITION- 38 41 25.38580(N) 075 47 02.97027(W)   ADJUSTED
 DC7283* NAD 83(2011) ELLIP HT-   -23.455 (meters)        (01/13/18)   ADJUSTED
 DC7283* NAD 83(2011) EPOCH   -  2010.00
 DC7283* NAVD 88 ORTHO HEIGHT -    11.845 (meters)       38.86  (feet) ADJUSTED
 DC7283  ______________________________________________________________________
 DC7283  GEOID HEIGHT    -        -35.315 (meters)                     GEOID18
 DC7283  NAD 83(2011) X  -  1,224,160.844 (meters)                     COMP
 DC7283  NAD 83(2011) Y  - -4,832,218.066 (meters)                     COMP
 DC7283  NAD 83(2011) Z  -  3,965,532.647 (meters)                     COMP
 DC7283  LAPLACE CORR    -         -3.06  (seconds)                    DEFLEC18
 DC7283  DYNAMIC HEIGHT  -         11.838 (meters)       38.84  (feet) COMP
 DC7283  MODELED GRAVITY -    980,021.9   (mgal)                       NAVD 88
 DC7283
 DC7283  VERT ORDER      -  SECOND    CLASS I
 DC7283
 DC7283  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DC7283  Standards:
 DC7283         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DC7283            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DC7283  -------------------------------------------------------------------
 DC7283  NETWORK    0.91   1.43           0.44   0.24   0.73     -0.01232800
 DC7283  -------------------------------------------------------------------
 DC7283  Click here for local accuracies and other accuracy information.
 DC7283
 DC7283.The horizontal coordinates were established by GPS observations
 DC7283.and adjusted by the ARCHER-SHEE LAND SURVEYING in January 2018.
 DC7283
 DC7283.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DC7283.been affixed to the stable North American tectonic plate. See 
 DC7283.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DC7283
 DC7283.The horizontal coordinates are valid at the epoch date displayed above
 DC7283.which is a decimal equivalence of Year/Month/Day.
 DC7283
 DC7283.The orthometric height was determined by differential leveling and
 DC7283.adjusted by the NATIONAL GEODETIC SURVEY
 DC7283.in December 2004.
 DC7283
 DC7283.Significant digits in the geoid height do not necessarily reflect accuracy.
 DC7283.GEOID18 height accuracy estimate available here.
 DC7283
 DC7283.Click photographs - Photos may exist for this station.
 DC7283
 DC7283.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DC7283
 DC7283.The Laplace correction was computed from DEFLEC18 derived deflections.
 DC7283
 DC7283.The ellipsoidal height was determined by GPS observations
 DC7283.and is referenced to NAD 83.
 DC7283
 DC7283.The dynamic height is computed by dividing the NAVD 88
 DC7283.geopotential number by the normal gravity value computed on the
 DC7283.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DC7283.degrees latitude (g = 980.6199 gals.).
 DC7283
 DC7283.The modeled gravity was interpolated from observed gravity values.
 DC7283
 DC7283. The following values were computed from the NAD 83(2011) position.
 DC7283
 DC7283;                    North         East     Units Scale Factor Converg.
 DC7283;SPC MD       -   114,341.127   505,773.578   MT  0.99995506   +0 45 47.2
 DC7283;SPC MD       -   375,134.18  1,659,358.81   sFT  0.99995506   +0 45 47.2
 DC7283;UTM  18      - 4,282,710.917   431,802.948   MT  0.99965727   -0 29 24.7
 DC7283
 DC7283!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DC7283!SPC MD       -   1.00000368  x   0.99995506  =   0.99995874
 DC7283!UTM  18      -   1.00000368  x   0.99965727  =   0.99966095
 DC7283
 DC7283_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3180282710(NAD 83)
 DC7283
 DC7283                          SUPERSEDED SURVEY CONTROL
 DC7283
 DC7283.No superseded survey control is available for this station.
 DC7283
 DC7283_MARKER: DZ = AZIMUTH MARK DISK
 DC7283_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DC7283_STAMPING: FEDERAL 2 1962
 DC7283_MARK LOGO: CGS
 DC7283_PROJECTION: RECESSED 8 CENTIMETERS
 DC7283_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DC7283_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DC7283+STABILITY: SURFACE MOTION
 DC7283_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DC7283+SATELLITE: SATELLITE OBSERVATIONS - October 12, 2017
 DC7283
 DC7283  HISTORY     - Date     Condition        Report By
 DC7283  HISTORY     - 1962     MONUMENTED       CGS
 DC7283  HISTORY     - 20020606 GOOD             MDSHA
 DC7283  HISTORY     - 20171012 GOOD             ARCSHE
 DC7283
 DC7283                          STATION DESCRIPTION
 DC7283
 DC7283'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DC7283'THE STATION IS LOCATED ABOUT 0.9 MI (1.45 KM) WEST-SOUTHWEST OF THE
 DC7283'CENTER OF FEDERALSBURG, MARYLAND.  TO REACH THE STATION FROM THE
 DC7283'INTERSECTION OF MAIN STREET AND CENTRAL AVENUE IN FEDERALSBURG, GO
 DC7283'SOUTH ALONG MAIN STREET FOR 0.15 MI (0.97 KM) TO A SIDE ROAD RIGHT.
 DC7283'TURN RIGHT AND GO WEST ALONG ACADEMY AVENUE FOR 0.6 MI (0.97 KM) TO
 DC7283'THE STATION ON THE RIGHT.  THE STATION IS A STANDARD AZIMUTH MARK DISK
 DC7283'SET IN THE TOP OF A 10 INCH (25 CM) SQUARE CONCRETE MONUMENT WHICH IS
 DC7283'BURIED THREE INCHES.  IT IS 20.5 FT (6.2 M) NORTH OF THE CENTER OF THE
 DC7283'ROAD, 80.0 FT (24.4 M) SOUTH OF GUY POLE 41656-05021, 64.3 FT (19.6 M)
 DC7283'WEST OF THE CENTER OF A MACADAM DRIVEWAY LEADING TO HOUSE 612, 33.0 FT
 DC7283'(10.1 M) EAST OF THE CENTER OF A METAL DROP INLET GRATE, 2.4 FT (0.7
 DC7283'M) NORTH OF POWER POLE 41657-05013.
 DC7283
 DC7283                          STATION RECOVERY (2017)
 DC7283
 DC7283'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 DC7283'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DC7284 ***********************************************************************
 DC7284  DESIGNATION -  FEDERAL 2 RM 1
 DC7284  PID         -  DC7284
 DC7284  STATE/COUNTY-  MD/CAROLINE
 DC7284  COUNTRY     -  US
 DC7284  USGS QUAD   -  FEDERALSBURG (2016)
 DC7284
 DC7284                         *CURRENT SURVEY CONTROL
 DC7284  ______________________________________________________________________
 DC7284* NAD 83(1986) POSITION- 38 41 23.72   (N) 075 47 10.15   (W)   HD_HELD1
 DC7284* NAVD 88 ORTHO HEIGHT -    12.986 (meters)       42.60  (feet) ADJUSTED
 DC7284  ______________________________________________________________________
 DC7284  GEOID HEIGHT    -        -35.312 (meters)                     GEOID18
 DC7284  DYNAMIC HEIGHT  -         12.978 (meters)       42.58  (feet) COMP
 DC7284  MODELED GRAVITY -    980,021.9   (mgal)                       NAVD 88
 DC7284
 DC7284  VERT ORDER      -  SECOND    CLASS I
 DC7284
 DC7284.The horizontal coordinates were determined by differentially corrected
 DC7284.hand held GPS observations or other comparable positioning techniques
 DC7284.and have an estimated accuracy of +/- 3 meters.
 DC7284
 DC7284.The orthometric height was determined by differential leveling and
 DC7284.adjusted by the NATIONAL GEODETIC SURVEY
 DC7284.in December 2004.
 DC7284
 DC7284.Significant digits in the geoid height do not necessarily reflect accuracy.
 DC7284.GEOID18 height accuracy estimate available here.
 DC7284
 DC7284.Click photographs - Photos may exist for this station.
 DC7284
 DC7284.The dynamic height is computed by dividing the NAVD 88
 DC7284.geopotential number by the normal gravity value computed on the
 DC7284.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DC7284.degrees latitude (g = 980.6199 gals.).
 DC7284
 DC7284.The modeled gravity was interpolated from observed gravity values.
 DC7284
 DC7284;                    North         East    Units  Estimated Accuracy
 DC7284;SPC MD       -   114,287.5     505,600.8     MT  (+/- 3 meters HH1 GPS) 
 DC7284
 DC7284_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3162982661(NAD 83)
 DC7284
 DC7284                          SUPERSEDED SURVEY CONTROL
 DC7284
 DC7284.No superseded survey control is available for this station.
 DC7284
 DC7284_MARKER: DR = REFERENCE MARK DISK
 DC7284_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DC7284_STAMPING: FEDERAL 2 NO. 1 1962
 DC7284_MARK LOGO: CGS
 DC7284_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DC7284_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DC7284+STABILITY: SURFACE MOTION
 DC7284_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DC7284+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2002
 DC7284
 DC7284  HISTORY     - Date     Condition        Report By
 DC7284  HISTORY     - 1962     MONUMENTED       CGS
 DC7284  HISTORY     - 20020606 GOOD             MDSHA
 DC7284
 DC7284                          STATION DESCRIPTION
 DC7284
 DC7284'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DC7284'THE STATION IS LOCATED 1.0 MI (1.61 KM) WEST-SOUTHWEST OF THE CENTER
 DC7284'OF FEDERALSBURG, MARYLAND.  TO REACH THE STATION FROM THE INTERSECTION
 DC7284'OF MAIN STREET AND CENTRAL AVENUE IN FEDERALSBURG, GO SOUTH ALONG MAIN
 DC7284'STREET FOR 0.15 MI (0.97 KM) TO A SIDE ROAD RIGHT. TURN RIGHT AND GO
 DC7284'WEST ALONG ACADEMY AVENUE FOR 0.75 MI (1.21 KM) TO A CINDER BLOCK
 DC7284'BUILDING AND THE STATION ON THE LEFT.  THE STATION IS A STANDARD
 DC7284'REFERENCE MARK DISK SET IN THE TOP OF A 10 INCH (25 CM) SQUARE
 DC7284'CONCRETE MONUMENT WHICH IS BURIED THREE INCHES.  IT IS 18.8 FT (5.7 M)
 DC7284'SOUTH OF THE CENTER OF THE ROAD, 110.2 FT (33.6 M) SOUTHEAST OF THE
 DC7284'SOUTHEAST CORNER OF THE CINDER BLOCK BUILDING, 64.4 FT (19.6 M)
 DC7284'SOUTHWEST AND ACROSS THE ROAD FROM POWER POLE 41605-05002, 12.5 FT
 DC7284'(3.8 M) EAST OF THE CENTER OF A DRIVEWAY LEADING SOUTH TO HOUSE 714,
 DC7284'AND 1.8 FT (0.5 M) WEST OF POWER POLE 41601-04994.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6755 ***********************************************************************
 JV6755  DESIGNATION -  FEDERAL AZ MK
 JV6755  PID         -  JV6755
 JV6755  STATE/COUNTY-  MD/HARFORD
 JV6755  COUNTRY     -  US
 JV6755  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6755
 JV6755                         *CURRENT SURVEY CONTROL
 JV6755  ______________________________________________________________________
 JV6755* NAD 83(2011) POSITION- 39 37 22.54001(N) 076 28 10.63050(W)   ADJUSTED
 JV6755* NAD 83(2011) ELLIP HT-   165.625 (meters)        (06/27/12)   ADJUSTED
 JV6755* NAD 83(2011) EPOCH   -  2010.00
 JV6755* NAVD 88 ORTHO HEIGHT -   198.2   (meters)      650.    (feet) VERTCON3
 JV6755  ______________________________________________________________________
 JV6755  GEOID HEIGHT    -        -32.535 (meters)                     GEOID18
 JV6755  NAD 83(2011) X  -  1,151,003.693 (meters)                     COMP
 JV6755  NAD 83(2011) Y  - -4,783,101.147 (meters)                     COMP
 JV6755  NAD 83(2011) Z  -  4,045,931.115 (meters)                     COMP
 JV6755  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 JV6755
 JV6755  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6755  Standards:
 JV6755         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6755            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6755  -------------------------------------------------------------------
 JV6755  NETWORK    1.32   4.45           0.58   0.48   2.27      0.28031947
 JV6755  -------------------------------------------------------------------
 JV6755  Click here for local accuracies and other accuracy information.
 JV6755
 JV6755.The horizontal coordinates were established by GPS observations
 JV6755.and adjusted by the National Geodetic Survey in June 2012.
 JV6755
 JV6755.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6755.been affixed to the stable North American tectonic plate. See 
 JV6755.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6755
 JV6755.The horizontal coordinates are valid at the epoch date displayed above
 JV6755.which is a decimal equivalence of Year/Month/Day.
 JV6755
 JV6755.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6755.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6755
 JV6755.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6755.GEOID18 height accuracy estimate available here.
 JV6755
 JV6755.Click photographs - Photos may exist for this station.
 JV6755
 JV6755.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6755
 JV6755.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6755
 JV6755.The ellipsoidal height was determined by GPS observations
 JV6755.and is referenced to NAD 83.
 JV6755
 JV6755. The following values were computed from the NAD 83(2011) position.
 JV6755
 JV6755;                    North         East     Units Scale Factor Converg.
 JV6755;SPC MD       -   217,295.706   445,540.696   MT  1.00003483   +0 19 58.4
 JV6755;SPC MD       -   712,911.00  1,461,744.77   sFT  1.00003483   +0 19 58.4
 JV6755;UTM  18      - 4,386,939.025   373,863.819   MT  0.99979588   -0 56 14.5
 JV6755
 JV6755!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6755!SPC MD       -   0.99997402  x   1.00003483  =   1.00000885
 JV6755!UTM  18      -   0.99997402  x   0.99979588  =   0.99976990
 JV6755
 JV6755:                Primary Azimuth Mark                     Grid Az
 JV6755:SPC MD       -  FEDERAL                                  031 09 59.0
 JV6755:UTM  18      -  FEDERAL                                  032 26 11.9
 JV6755
 JV6755_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7386386939(NAD 83)
 JV6755
 JV6755|---------------------------------------------------------------------|
 JV6755| PID    Reference Object                     Distance      Geod. Az  |
 JV6755|                                                           dddmmss.s |
 JV6755| JV6754 FEDERAL                             APPROX. 0.7 KM 0312957.4 |
 JV6755|---------------------------------------------------------------------|
 JV6755
 JV6755                          SUPERSEDED SURVEY CONTROL
 JV6755
 JV6755  NAD 83(2007)-  39 37 22.54014(N)    076 28 10.63132(W) AD(2002.00) 0
 JV6755  ELLIP H (02/10/07)  165.641  (m)                       GP(2002.00)    
 JV6755  ELLIP H (09/18/02)  165.660  (m)                       GP(       ) 4 2
 JV6755  NAD 83(1991)-  39 37 22.54014(N)    076 28 10.63002(W) AD(       ) 1
 JV6755  ELLIP H (01/27/92)  165.642  (m)                       GP(       ) 4 1
 JV6755  NAD 83(1986)-  39 37 22.53314(N)    076 28 10.63648(W) AD(       ) 1
 JV6755  NGVD 29 (06/18/91)  198.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6755
 JV6755.Superseded values are not recommended for survey control.
 JV6755
 JV6755.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6755.See file dsdata.pdf to determine how the superseded data were derived.
 JV6755
 JV6755_MARKER: DZ = AZIMUTH MARK DISK
 JV6755_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6755_STAMPING: 137 FEDERAL 1989
 JV6755_MARK LOGO: MD-025
 JV6755_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6755_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6755+STABILITY: SURFACE MOTION
 JV6755_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6755+SATELLITE: SATELLITE OBSERVATIONS - January 03, 1990
 JV6755
 JV6755  HISTORY     - Date     Condition        Report By
 JV6755  HISTORY     - 1989     MONUMENTED       RDA
 JV6755  HISTORY     - 19900103 GOOD
 JV6755
 JV6755                          STATION DESCRIPTION
 JV6755
 JV6755'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6755'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED WEST ALONG OLD
 JV6755'FEDERAL HILL ROAD 0.33 MILES TO ITS INTERSECTION WITH GRIMM ROAD. TURN
 JV6755'LEFT AND PROCEED SOUTHEAST ALONG GRIMM ROAD 0.5 MILES TO THE MARK ON
 JV6755'THE LEFT.
 JV6755'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6755'ABOUT 1 INCH BELOW GROUND STAMPED 137 FEDERAL 1989.  THE MARK IS 2.4
 JV6755'FEET SOUTH OF A SPLIT RAIL FENCE LINE, 117.0 FEET EAST OF THE END OF
 JV6755'THE SPLIT RAIL FENCE, AND 17.5 FEET NORTH OF THE CENTERLINE OF GRIMM
 JV6755'ROAD, AND 2218.43 FEET FROM THE STATION.
 JV6755
 JV6755                          STATION RECOVERY (1990)
 JV6755
 JV6755'RECOVERED 1990
 JV6755'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5573 ***********************************************************************
 JV5573  DESIGNATION -  FEDERAL USE 1915
 JV5573  PID         -  JV5573
 JV5573  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5573  COUNTRY     -  US
 JV5573  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5573
 JV5573                         *CURRENT SURVEY CONTROL
 JV5573  ______________________________________________________________________
 JV5573* NAD 83(1991) POSITION- 39 16 49.14598(N) 076 36 29.26783(W)   ADJUSTED
 JV5573* NAVD 88 ORTHO HEIGHT -    14.    (meters)       46.    (feet) SCALED
 JV5573  ______________________________________________________________________
 JV5573  GEOID HEIGHT    -        -32.754 (meters)                     GEOID18
 JV5573  LAPLACE CORR    -         -5.33  (seconds)                    DEFLEC18
 JV5573  HORZ ORDER      -  THIRD
 JV5573
 JV5573.The horizontal coordinates were established by classical geodetic methods
 JV5573.and adjusted by the National Geodetic Survey in January 1992.
 JV5573
 JV5573.The orthometric height was scaled from a topographic map.
 JV5573
 JV5573.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5573.GEOID18 height accuracy estimate available here.
 JV5573
 JV5573.Click photographs - Photos may exist for this station.
 JV5573
 JV5573.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5573
 JV5573. The following values were computed from the NAD 83(1991) position.
 JV5573
 JV5573;                    North         East     Units Scale Factor Converg.
 JV5573;SPC MD       -   179,198.002   433,810.982   MT  0.99997472   +0 14 45.4
 JV5573;SPC MD       -   587,918.78  1,423,261.53   sFT  0.99997472   +0 14 45.4
 JV5573;UTM  18      - 4,349,117.100   361,296.679   MT  0.99983688   -1 01 05.9
 JV5573
 JV5573!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5573!SPC MD       -   1.00000298  x   0.99997472  =   0.99997770
 JV5573!UTM  18      -   1.00000298  x   0.99983688  =   0.99983986
 JV5573
 JV5573:                Primary Azimuth Mark                     Grid Az
 JV5573:SPC MD       -  PIER 3 USE 1915                          002 18 23.2
 JV5573:UTM  18      -  PIER 3 USE 1915                          003 34 14.5
 JV5573
 JV5573_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6129649117(NAD 83)
 JV5573
 JV5573|---------------------------------------------------------------------|
 JV5573| PID    Reference Object                     Distance      Geod. Az  |
 JV5573|                                                           dddmmss.s |
 JV5573| JV5574 PIER 3 USE 1915                     446.081 METERS 0023308.6 |
 JV5573| JV5559 PIER 6 USE 1915                     435.470 METERS 0465126.0 |
 JV5573| JV5572 YORK USE 1915                       282.975 METERS 32528     |
 JV5573| JV5565 MARYLAND CASUALTY TOWER             APPROX. 1.1 KM 3450838.2 |
 JV5573|---------------------------------------------------------------------|
 JV5573
 JV5573                          SUPERSEDED SURVEY CONTROL
 JV5573
 JV5573  NAD 83(1986)-  39 16 49.14234(N)    076 36 29.27652(W) AD(       ) 3
 JV5573  NAD 27      -  39 16 48.75400(N)    076 36 30.38200(W) AD(       ) 3
 JV5573  USSD        -  39 16 49.11900(N)    076 36 30.22000(W) AD(       ) 3
 JV5573
 JV5573.Superseded values are not recommended for survey control.
 JV5573
 JV5573.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5573.See file dsdata.pdf to determine how the superseded data were derived.
 JV5573
 JV5573
 JV5573  HISTORY     - Date     Condition        Report By
 JV5573  HISTORY     - 1915     MONUMENTED       CGS
 JV5573  HISTORY     - 1924     GOOD             CGS
 JV5573  HISTORY     - 20010822 MARK NOT FOUND   USPSQD
 JV5573
 JV5573                          STATION DESCRIPTION
 JV5573
 JV5573'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5573'AT FEDERAL HILL PARK, NEARLY N OF THE ARMISTEAD MONUMENT.  THE
 JV5573'STATION IS MARKED BY A CONCRETE MONUMENT CENTERED BY A WIRE
 JV5573'NAIL.  DISTANCES FROM THE STATION TO REFERENCE POINTS ARE AS
 JV5573'FOLLOWS--NW CORNER OF THE BASE OF ARMISTEAD MONUMENT, 7.742 METERS
 JV5573'(25.40 FEET).  NE CORNER OF THE SAME, 7.852 METERS (25.76
 JV5573'FEET).  ARC LIGHT LAMP-POST E OF THE STATION, 7.89 METERS (25.9
 JV5573'FEET).
 JV5573
 JV5573                          STATION RECOVERY (2001)
 JV5573
 JV5573'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKL)
 JV5573'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4731 ***********************************************************************
 AB4731  DESIGNATION -  FEESER
 AB4731  PID         -  AB4731
 AB4731  STATE/COUNTY-  MD/CARROLL
 AB4731  COUNTRY     -  US
 AB4731  USGS QUAD   -  TANEYTOWN (2016)
 AB4731
 AB4731                         *CURRENT SURVEY CONTROL
 AB4731  ______________________________________________________________________
 AB4731* NAD 83(2011) POSITION- 39 38 01.79359(N) 077 10 49.28745(W)   ADJUSTED
 AB4731* NAD 83(2011) ELLIP HT-   128.522 (meters)        (06/27/12)   ADJUSTED
 AB4731* NAD 83(2011) EPOCH   -  2010.00
 AB4731* NAVD 88 ORTHO HEIGHT -   161.4   (meters)      530.    (feet) GPS OBS
 AB4731  ______________________________________________________________________
 AB4731  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4731  GEOID HEIGHT    -        -32.871 (meters)                     GEOID99
 AB4731  GEOID HEIGHT    -        -32.873 (meters)                     GEOID18
 AB4731  NAD 83(2011) X  -  1,091,405.965 (meters)                     COMP
 AB4731  NAD 83(2011) Y  - -4,796,229.884 (meters)                     COMP
 AB4731  NAD 83(2011) Z  -  4,046,839.887 (meters)                     COMP
 AB4731  LAPLACE CORR    -          4.50  (seconds)                    DEFLEC18
 AB4731
 AB4731  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4731  Standards:
 AB4731         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4731            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4731  -------------------------------------------------------------------
 AB4731  NETWORK    0.94   2.41           0.44   0.30   1.23     -0.12439325
 AB4731  -------------------------------------------------------------------
 AB4731  Click here for local accuracies and other accuracy information.
 AB4731
 AB4731.The horizontal coordinates were established by GPS observations
 AB4731.and adjusted by the National Geodetic Survey in June 2012.
 AB4731
 AB4731.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4731.been affixed to the stable North American tectonic plate. See 
 AB4731.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4731
 AB4731.The horizontal coordinates are valid at the epoch date displayed above
 AB4731.which is a decimal equivalence of Year/Month/Day.
 AB4731
 AB4731.The orthometric height was determined by GPS observations and a
 AB4731.high-resolution geoid model.
 AB4731
 AB4731.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4731.GEOID18 height accuracy estimate available here.
 AB4731
 AB4731.Click photographs - Photos may exist for this station.
 AB4731
 AB4731.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4731
 AB4731.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4731
 AB4731.The ellipsoidal height was determined by GPS observations
 AB4731.and is referenced to NAD 83.
 AB4731
 AB4731. The following values were computed from the NAD 83(2011) position.
 AB4731
 AB4731;                    North         East     Units Scale Factor Converg.
 AB4731;SPC MD       -   218,389.370   384,516.050   MT  1.00003733   -0 06 47.5
 AB4731;SPC MD       -   716,499.12  1,261,533.07   sFT  1.00003733   -0 06 47.5
 AB4731;UTM  18      - 4,389,389.000   312,886.525   MT  1.00003107   -1 23 28.3
 AB4731
 AB4731!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4731!SPC MD       -   0.99997984  x   1.00003733  =   1.00001717
 AB4731!UTM  18      -   0.99997984  x   1.00003107  =   1.00001091
 AB4731
 AB4731:                Primary Azimuth Mark                     Grid Az
 AB4731:SPC MD       -  TURF                                     009 04 54.1
 AB4731:UTM  18      -  TURF                                     010 21 34.9
 AB4731
 AB4731_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1288689388(NAD 83)
 AB4731
 AB4731|---------------------------------------------------------------------|
 AB4731| PID    Reference Object                     Distance      Geod. Az  |
 AB4731|                                                           dddmmss.s |
 AB4731| AB4706 TURF                                APPROX. 0.6 KM 0085806.6 |
 AB4731|---------------------------------------------------------------------|
 AB4731
 AB4731                          SUPERSEDED SURVEY CONTROL
 AB4731
 AB4731  NAD 83(2007)-  39 38 01.79355(N)    077 10 49.28843(W) AD(2002.00) 0
 AB4731  ELLIP H (02/10/07)  128.538  (m)                       GP(2002.00)    
 AB4731  ELLIP H (08/30/02)  128.557  (m)                       GP(       ) 4 2
 AB4731  NAD 83(1991)-  39 38 01.79328(N)    077 10 49.28818(W) AD(       ) 1
 AB4731  ELLIP H (07/03/96)  128.513  (m)                       GP(       ) 1 1
 AB4731  NAVD 88 (07/03/96)  161.4    (m)  GEOID93  model used  GPS OBS        
 AB4731
 AB4731.Superseded values are not recommended for survey control.
 AB4731
 AB4731.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4731.See file dsdata.pdf to determine how the superseded data were derived.
 AB4731
 AB4731_MARKER: DD = SURVEY DISK
 AB4731_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4731_STAMPING: FEESER 1995
 AB4731_MARK LOGO: MD-013
 AB4731_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4731_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4731+STABILITY: SURFACE MOTION
 AB4731_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4731+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2007
 AB4731
 AB4731  HISTORY     - Date     Condition        Report By
 AB4731  HISTORY     - 1995     MONUMENTED       MD-013
 AB4731  HISTORY     - 20070529 GOOD             GEOCAC
 AB4731
 AB4731                          STATION DESCRIPTION
 AB4731
 AB4731'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4731'STATION IS LOCATED ABOUT 2.0 MI (3.2 KM) SOUTH OF TANEYTOWN. TO REACH
 AB4731'STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD
 AB4731'ROUTE 194 (FRANCIS SCOTT KEY HIGHWAY) IN TANEYTOWN, GO SOUTH ON MD
 AB4731'ROUTE 194 FOR 0.65 MI (1.05 KM) TO THE INTERSECTION WITH CROUSE MILL
 AB4731'ROAD. TURN LEFT ON CROUSE MILL ROAD AND GO SOUTH FOR 0.7 MI (1.1 KM)
 AB4731'TO THE INTERSECTION WITH FEESER ROAD. TURN LEFT ON FEESER ROAD AND GO
 AB4731'EAST FOR 0.8 MI (1.3 KM) TO THE STATION ON RIGHT. STATION IS ALSO 0.4
 AB4731'MI (0.6 KM) EAST OF THE INTERSECTION OF FEESER ROAD AND STONESIFER
 AB4731'ROAD. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4731'MONUMENT SET FLUSH WITH THE GROUND. IT IS 15.6 FT (4.8 M) SOUTH OF THE
 AB4731'CENTERLINE OF THE ROAD, 9.0 FT (2.7 M) WEST OF THE SOUTH END OF AN 18
 AB4731'IN STORM DRAIN PIPE, 57.0 FT (17.4 M) SOUTHWEST OF POWER POLE
 AB4731'NO.U-3813 AND 128.0 FT (39.0 M) EAST OF THE CORNER OF A BARBED WIRE
 AB4731'FENCE.
 AB4731
 AB4731                          STATION RECOVERY (2007)
 AB4731
 AB4731'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 AB4731'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5653 ***********************************************************************
 JV5653  DESIGNATION -  FELL RESET
 JV5653  PID         -  JV5653
 JV5653  STATE/COUNTY-  MD/BALTIMORE
 JV5653  COUNTRY     -  US
 JV5653  USGS QUAD   -  COCKEYSVILLE (2016)
 JV5653
 JV5653                         *CURRENT SURVEY CONTROL
 JV5653  ______________________________________________________________________
 JV5653* NAD 83(1991) POSITION- 39 24 23.57213(N) 076 40 24.88576(W)   ADJUSTED
 JV5653* NAVD 88 ORTHO HEIGHT -   134.    (meters)      440.    (feet) SCALED
 JV5653  ______________________________________________________________________
 JV5653  GEOID HEIGHT    -        -32.406 (meters)                     GEOID18
 JV5653  LAPLACE CORR    -         -5.13  (seconds)                    DEFLEC18
 JV5653  HORZ ORDER      -  SECOND
 JV5653
 JV5653.The horizontal coordinates were established by classical geodetic methods
 JV5653.and adjusted by the National Geodetic Survey in January 1992.
 JV5653
 JV5653.The orthometric height was scaled from a topographic map.
 JV5653
 JV5653.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5653.GEOID18 height accuracy estimate available here.
 JV5653
 JV5653.Click photographs - Photos may exist for this station.
 JV5653
 JV5653.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5653
 JV5653. The following values were computed from the NAD 83(1991) position.
 JV5653
 JV5653;                    North         East     Units Scale Factor Converg.
 JV5653;SPC MD       -   193,189.718   428,113.850   MT  0.99999269   +0 12 17.5
 JV5653;SPC MD       -   633,823.27  1,404,570.19   sFT  0.99999269   +0 12 17.5
 JV5653;UTM  18      - 4,363,229.322   355,910.771   MT  0.99985563   -1 03 45.4
 JV5653
 JV5653!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5653!SPC MD       -   0.99998410  x   0.99999269  =   0.99997679
 JV5653!UTM  18      -   0.99998410  x   0.99985563  =   0.99983973
 JV5653
 JV5653:                Primary Azimuth Mark                     Grid Az
 JV5653:SPC MD       -  FELL AZ MK                               305 41 42.3
 JV5653:UTM  18      -  FELL AZ MK                               306 57 45.2
 JV5653
 JV5653_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5591063229(NAD 83)
 JV5653
 JV5653|---------------------------------------------------------------------|
 JV5653| PID    Reference Object                     Distance      Geod. Az  |
 JV5653|                                                           dddmmss.s |
 JV5653| JV6508 CHANGE RESET                        APPROX. 3.3 KM 0641328.7 |
 JV5653| CA9409 FELL RM 1                            25.258 METERS 08704     |
 JV5653| CA9410 FELL RM 2                            22.352 METERS 18942     |
 JV5653| CA9408 FELL AZ MK                                         3055359.8 |
 JV5653| CA9411 FELL RM 3                             9.280 METERS 31942     |
 JV5653|---------------------------------------------------------------------|
 JV5653
 JV5653                          SUPERSEDED SURVEY CONTROL
 JV5653
 JV5653  NAD 83(1986)-  39 24 23.56880(N)    076 40 24.89308(W) AD(       ) 2
 JV5653  NAD 27      -  39 24 23.18550(N)    076 40 25.99500(W) AD(       ) 2
 JV5653
 JV5653.Superseded values are not recommended for survey control.
 JV5653
 JV5653.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5653.See file dsdata.pdf to determine how the superseded data were derived.
 JV5653
 JV5653_MARKER: DH = HORIZONTAL CONTROL DISK
 JV5653_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5653_STAMPING: FELL 1959 1973
 JV5653_MARK LOGO: NGS
 JV5653_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5653+STABILITY: SURFACE MOTION
 JV5653
 JV5653  HISTORY     - Date     Condition        Report By
 JV5653  HISTORY     - 1959     MONUMENTED       CGS
 JV5653  HISTORY     - 1973     SEE DESCRIPTION  MDDT
 JV5653  HISTORY     - 1973     SEE DESCRIPTION  NGS
 JV5653  HISTORY     - 1977     GOOD             NGS
 JV5653
 JV5653                          STATION DESCRIPTION
 JV5653
 JV5653'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (HRL)
 JV5653'STATION IS LOCATED ABOUT 8 MILES NORTH NORTHWEST OF THE CENTER OF
 JV5653'BALTIMORE, ABOUT 3-1/2 MILES WEST OF THE CENTER OF TOWSON AND 1/2
 JV5653'MILE NORTH OF THE JUNCTION OF STATE HIGHWAYS 25 AND 133.  STATION
 JV5653'IS 21 FEET EAST OF FENCE, 19 FEET SOUTHWEST OF 1.5 FOOT TREE WITH
 JV5653'TRIANGLE BLAZE AND 13 FEET SOUTH OF FENCE.  THE MARK PROJECTS
 JV5653'ABOUT 2 INCHES AND THE DISK IS STAMPED FELL 1959.
 JV5653'
 JV5653'REFERENCE MARK NO. 1 IS 1 FOOT SOUTH OF FENCE.  THE MARK PROJECTS
 JV5653'ABOUT 4 INCHES AND THE DISK IS STAMPED FELL NO 1 1959.
 JV5653'
 JV5653'REFERENCE MARK NO. 2 IS 4 FEET EAST OF FENCE.  THE MARK PROJECTS
 JV5653'ABOUT 4 INCHES AND THE DISK IS STAMPED FELL NO 2 1959.
 JV5653'
 JV5653'AZIMUTH MARK IS 15 FEET NORTH OF THE APPROXIMATE CENTER OF
 JV5653'BLACKTOP DRIVEWAY, 5 FEET WEST OF 10 INCH TREE AND 1.5 FEET SOUTH
 JV5653'OF FENCE.  THE MARK IS FLUSH WITH THE GROUND AND THE DISK IS
 JV5653'STAMPED FELL 1959.
 JV5653'
 JV5653'TO REACH STATION FROM THE JUNCTION OF STATE HIGHWAYS 25 AND 133,
 JV5653'WHICH IS ABOUT 0.1 MILE NORTH OF TRAFFIC LIGHT AT JUNCTION OF
 JV5653'STATE HIGHWAYS 25 AND 134, GO NORTH ON STATE HIGHWAY 25 FOR 0.45
 JV5653'MILE TO TWO DRIVEWAYS ON THE LEFT.  TURN LEFT ON THE SOUTHERLY OF
 JV5653'TWO DRIVEWAYS AND GO WESTERLY FOR 0.35 MILE TO DRIVEWAY ON
 JV5653'LEFT.  TURN LEFT AND GO SOUTH FOR 0.1 MILE TO A LARGE STONE
 JV5653'HOUSE ON THE RIGHT AND STATION ON THE LEFT AS DESCRIBED.
 JV5653'
 JV5653'A TALL TRIPOD ON BOTH ENDS NECESSARY TO SEE AZIMUTH MARK FROM
 JV5653'THE GROUND.
 JV5653'
 JV5653'TO REACH AZIMUTH MARK FROM STATION GO NORTH ON DRIVEWAY FOR 0.1
 JV5653'MILE TO T DRIVEWAY.  TURN LEFT AND GO WEST FOR 0.1 MILE TO AZIMUTH
 JV5653'MARK ON THE RIGHT OR NORTH SIDE OF ROAD AS DESCRIBED.
 JV5653'
 JV5653'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5653
 JV5653                          STATION RECOVERY (1973)
 JV5653
 JV5653'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1973
 JV5653'THE STATION SURFACE MARK WAS FOUND DESTROYED.  THE UNDERGROUND
 JV5653'MARK WAS FOUND IN GOOD CONDITION 27 INCHES DEEP.  RMS 1 AND 2 AND
 JV5653'THE AZIMUTH MARK WERE FOUND IN GOOD CONDITION.
 JV5653'
 JV5653'THE FOLLOWING REFERENCES SHOULD BE ADDED--
 JV5653'
 JV5653'SPIKE IN CENTERLINE OF DRIVEWAY SET ON LINE TO AZIMUTH MARK,
 JV5653'70.32 FEET FROM UNDERGROUND MARK.
 JV5653'
 JV5653'REBAR AND CAP SET ON LINE TO RM 1, 11.38 FEET FROM UNDERGROUND
 JV5653'MARK.
 JV5653'
 JV5653'REBAR AND CAP SET ON LINE TO RM 2, 18.51 FEET FROM UNDERGROUND
 JV5653'MARK, 13.63 FEET SW OF NAIL IN 12 INCH TREE AND 18.17 FEET NW OF
 JV5653'NAIL IN 30 INCH POPLAR TREE.
 JV5653
 JV5653                          STATION RECOVERY (1973)
 JV5653
 JV5653'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV5653'THE STATION SURFACE DISK WAS FOUND DESTROYED.  THE SUB-SURFACE
 JV5653'DISK WAS FOUND IN GOOD CONDITION.  A NEW STATION SURFACE DISK WAS
 JV5653'PLACED OVER THE OLD SUB-SURFACE DISK.  REFERENCE MARKS 1 AND 2
 JV5653'WERE RECOVERED AND FOUND IN GOOD CONDITION.  DUE TO CROPS IN THE
 JV5653'CULTIVATED FIELD ON LINE TO THE AZIMUTH MARK, IT IS NO LONGER
 JV5653'VISIBLE FROM THE GROUND.  AFTER THE CROPS ARE CUT THE LINE MAY
 JV5653'BE OBSERVED TO THE AZIMUTH MARK.  THE DISTANCES TO THE
 JV5653'REFERENCE MARKS WHICH WERE OBTAINED IN 1959 WERE SLOPE
 JV5653'MEASUREMENTS, THEREFOR A SHORTER HORIZONAL DISTANCE WAS OBTAINED
 JV5653'TO BOTH REFERENCE MARKS AT THIS DATE.  THE DIRECTION BETWEEN THE
 JV5653'REFERENCE MARKS WAS FOUND TO BE WITHIN CLOSE AGREEMENT WITH
 JV5653'THE 1959 OBSERVATIONS.
 JV5653'
 JV5653'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV5653'
 JV5653'THE STATION IS LOCATED ABOUT 8 AIRLINE MILES NORTH-NORTHWEST OF
 JV5653'BALTIMORE AND 2 MILES NORTHWEST OF TOWSON.  IT IS IN THE EDGE OF A
 JV5653'BRUSH COVERED HILL JUST EAST OF A LARGE STONE HOUSE.  THE PROPERTY
 JV5653'IS OWNED BY MR. R.A. BROOKS AND MR. BROOKS LIVES IN THE STONE
 JV5653'HOUSE AT THE STATION.
 JV5653'
 JV5653'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 25
 JV5653'AND 133 IN THE NORTHWEST PART OF BALTIMORE, GO NORTHERLY ON STATE
 JV5653'HIGHWAY 25 FOR 0.5 MILE TO A SIDE ROAD LEFT, JUST AFTER CROSSING
 JV5653'OVER INTERSTATE HIGHWAY 695.  TURN LEFT AND GO WESTERLY UPHILL
 JV5653'ON A PAVED ROAD FOR 0.4 MILE TO A SIDE ROAD LEFT.  TURN LEFT AND
 JV5653'GO SOUTH ON A PRIVATE ROAD FOR 0.1 MILE TO THE LARGE STONE HOUSE
 JV5653'ON THE RIGHT AND THE STATION ON THE LEFT.
 JV5653'
 JV5653'THE STATION MARK IS A STANDARD DISK STAMPED FELL 1959 1973, SET
 JV5653'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS 1-INCH
 JV5653'BELOW THE SURFACE.  IT IS 100 FEET EAST OF THE LARGE STONE HOUSE,
 JV5653'30 FEET EAST OF THE CENTER OF THE PRIVATE ROAD AND 19 FEET
 JV5653'SOUTHWEST OF A 24-INCH TREE.
 JV5653'
 JV5653'REFERENCE MARK 1 IS A STANDARD DISK STAMPED FELL NO 1 1959, SET
 JV5653'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV5653'3-INCHES.  IT IS 60 FEET EAST OF THE 24-INCH TREE AND IN THE EDGE
 JV5653'OF THE BRUSH COVERED SLOPE OF THE HILL WHERE IT SLOPES TO THE
 JV5653'EAST.
 JV5653'
 JV5653'REFERENCE MARK 2 IS A STANDARD DISK STAMPED FELL NO 2 1959, SET
 JV5653'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV5653'3-INCHES.  IT IS 25 FEET EAST OF THE CENTER OF THE PRIVATE ROAD
 JV5653'AND 1 FOOT EAST OF A SMALL PILE OF ROCKS.
 JV5653'
 JV5653'THE AZIMUTH MARK IS A STANDARD DISK STAMPED FELL 1959, SET IN
 JV5653'THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV5653'1-INCH.  IT IS 15 FEET NORTH OF THE CENTER OF A PAVED ROAD, 5
 JV5653'FEET WEST OF A 12-INCH TREE AND 1.5 FEET SOUTH OF A BOARD
 JV5653'FENCE.
 JV5653'
 JV5653'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH ON THE
 JV5653'PRIVATE ROAD FOR 0.1 MILE TO A T-INTERSECTION.  TURN LEFT AND GO
 JV5653'WEST ON A PAVED ROAD FOR 0.1 MILE TO THE MARK ON THE RIGHT, JUST
 JV5653'BEFORE REACHING A FARM ON THE LEFT.
 JV5653'
 JV5653'DUE TO THE GRASS COVERED YARDS THERE WAS NO WITNESS POST SET AT
 JV5653'THIS STATION.
 JV5653'
 JV5653'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5653'2 MILES NORTHWEST OF TOWSON.
 JV5653
 JV5653                          STATION RECOVERY (1977)
 JV5653
 JV5653'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 JV5653'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV5653'CONDITION AS PREVIOUSLY DESCRIBED.  REFERENCE MARK 1 WAS FOUND
 JV5653'IN THE AREA OF THE CONSTRUCTION OF A NEW HOUSE.  A NEW REFERENCE
 JV5653'MARK 3 WAS ESTABLISHED AT THIS DATE.  REFERENCE MARK 1 WAS THEN
 JV5653'DESTROYED.  THE DISTANCES AND DIRECTION TO ALL MARKS WERE WITHIN
 JV5653'CLOSE AGREEMENT WITH THE PREVIOUS OBSERVATIONS.
 JV5653'
 JV5653'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV5653'
 JV5653'THE STATION IS LOCATED ABOUT 8 AIRLINE MILES NORTH-NORTHWEST OF
 JV5653'THE CENTER OF BALTIMORE, 3-1/2 MILES WEST OF TOWSON, 1/2 MILE
 JV5653'NORTH OF THE INTERSECTION OF INTERSTATE HIGHWAY 695 AND STATE
 JV5653'HIGHWAY 25 AND ON PROPERTY OWNED BY MR. RICHARD BROOKS, 10410
 JV5653'FALLS ROAD, BALTIMORE, MARYLAND.  TELEPHONE NUMBER (301) 358
 JV5653'7400.
 JV5653'
 JV5653'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAYS 695 AND
 JV5653'STATE HIGHWAY 25 (FALLS ROAD), GO NORTHERLY ON STATE HIGHWAY 25
 JV5653'(FALLS ROAD) FOR 0.05 MILE TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 JV5653'WESTERLY ON A PAVED ROAD FOR 0.4 MILE TO A SIDE ROAD LEFT, (THE
 JV5653'AZIMUTH MARK IS LOCATED 0.1 MILE WEST OF THIS POINT ON THE NORTH
 JV5653'SIDE OF THE ROAD).  TURN LEFT AND GO SOUTH ON A PAVED DRIVE FOR
 JV5653'0.05 MILE TO MR. BROOKS HOME ON THE LEFT AND THE STATION JUST
 JV5653'WEST OF THE HOUSE.
 JV5653'
 JV5653'THE STATION MARK IS A STANDARD DISK STAMPED FELL 1959 1973, SET
 JV5653'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS 1-INCH
 JV5653'BELOW THE SURFACE.  IT IS 122 FEET NORTHEAST OF THE NORTHEAST
 JV5653'CORNER OF A TWO STORY STONE HOUSE, 59 FEET EAST OF THE CENTER OF
 JV5653'A DRIVE LEADING TO THE STONE HOUSE, 52 FEET WEST OF THE WEST SIDE
 JV5653'OF MR. BROOKS HOUSE AND 1.5 FEET EAST OF A WITNESS POST.
 JV5653'
 JV5653'REFERENCE MARK 2 IS A STANDARD DISK STAMPED FELL NO 2 1959, SET
 JV5653'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV5653'2-INCHES.  IT IS 97 FEET SOUTHWEST OF MR. BROOKS HOUSE, 74 FEET
 JV5653'SOUTH OF THE WITNESS POST AND 60 FEET EAST OF THE CENTER OF THE
 JV5653'DRIVE LEADING TO THE STONE HOUSE.
 JV5653'
 JV5653'REFERENCE MARK 3 IS A STANDARD DISK STAMPED FELL 1959 NO 3 1977,
 JV5653'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS
 JV5653'2-INCHES.  IT IS 115 FEET NORTHEAST OF THE NORTHEAST CORNER OF
 JV5653'THE STONE HOUSE, 68 FEET WEST OF THE WEST SIDE OF MR. BROOKS
 JV5653'HOUSE, 38 FEET EAST OF THE CENTER OF THE DRIVE LEADING TO THE
 JV5653'STONE HOUSE AND 29.5 FEET NORTHWEST OF THE WITNESS POST.
 JV5653'
 JV5653'THE AZIMUTH MARK IS A STANDARD DISK STAMPED FELL 1959, SET IN
 JV5653'THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH
 JV5653'THE SURFACE.  IT IS 19 FEET EAST OF A 24-INCH MAPLE TREE, 14.5
 JV5653'FEET NORTH OF THE CENTER OF THE ROAD, 6 FEET WEST OF A 24-INCH
 JV5653'MAPLE TREE AND 4 FEET SOUTH OF A WHITE BOARD FENCE.
 JV5653'
 JV5653'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5653'3-1/2 WEST OF TOWSON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6956 ***********************************************************************
 HV6956  DESIGNATION -  FENCE
 HV6956  PID         -  HV6956
 HV6956  STATE/COUNTY-  MD/ST MARYS
 HV6956  COUNTRY     -  US
 HV6956  USGS QUAD   -  SAINT CLEMENTS ISLAND (2016)
 HV6956
 HV6956                         *CURRENT SURVEY CONTROL
 HV6956  ______________________________________________________________________
 HV6956* NAD 83(1993) POSITION- 38 14 37.97150(N) 076 40 59.13167(W)   ADJUSTED
 HV6956* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6956  ______________________________________________________________________
 HV6956  GEOID HEIGHT    -        -33.835 (meters)                     GEOID18
 HV6956  LAPLACE CORR    -         -3.87  (seconds)                    DEFLEC18
 HV6956  HORZ ORDER      -  THIRD
 HV6956
 HV6956.The horizontal coordinates were established by classical geodetic methods
 HV6956.and adjusted by the National Geodetic Survey in November 1994.
 HV6956
 HV6956.The orthometric height was scaled from a topographic map.
 HV6956
 HV6956.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6956.GEOID18 height accuracy estimate available here.
 HV6956
 HV6956.Click photographs - Photos may exist for this station.
 HV6956
 HV6956.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6956
 HV6956. The following values were computed from the NAD 83(1993) position.
 HV6956
 HV6956;                    North         East     Units Scale Factor Converg.
 HV6956;SPC MD       -    64,121.674   427,742.593   MT  1.00001024   +0 11 56.0
 HV6956;SPC MD       -   210,372.53  1,403,352.16   sFT  1.00001024   +0 11 56.0
 HV6956;SPC VA N     - 2,065,643.324 3,659,038.316   MT  0.99996952   +1 08 02.3
 HV6956;SPC VA N     - 6,777,031.47 12,004,694.88   sFT  0.99996952   +1 08 02.3
 HV6956;UTM  18      - 4,234,213.998   352,714.722   MT  0.99986716   -1 02 31.3
 HV6956
 HV6956!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6956!SPC MD       -   1.00000488  x   1.00001024  =   1.00001512
 HV6956!SPC VA N     -   1.00000488  x   0.99996952  =   0.99997440
 HV6956!UTM  18      -   1.00000488  x   0.99986716  =   0.99987204
 HV6956
 HV6956:                Primary Azimuth Mark                     Grid Az
 HV6956:SPC MD       -  COMPTON MSFC 1908                        318 17 33.8
 HV6956:SPC VA N     -  COMPTON MSFC 1908                        317 21 27.5
 HV6956:UTM  18      -  COMPTON MSFC 1908                        319 32 01.1
 HV6956
 HV6956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5271434213(NAD 83)
 HV6956
 HV6956|---------------------------------------------------------------------|
 HV6956| PID    Reference Object                     Distance      Geod. Az  |
 HV6956|                                                           dddmmss.s |
 HV6956| CX2750 FENCE RM                             12.870 METERS 15418     |
 HV6956| HV6957 DUNE MSFC 1908                      422.269 METERS 2261454.6 |
 HV6956| HV6818 COMPTON MSFC 1908                   APPROX. 1.8 KM 3182929.8 |
 HV6956|---------------------------------------------------------------------|
 HV6956
 HV6956                          SUPERSEDED SURVEY CONTROL
 HV6956
 HV6956  NAD 83(1991)-  38 14 37.97028(N)    076 40 59.13644(W) AD(       ) 3
 HV6956  NAD 83(1986)-  38 14 37.97131(N)    076 40 59.14805(W) AD(       ) 3
 HV6956  NAD 27      -  38 14 37.49800(N)    076 41 00.26400(W) AD(       ) 3
 HV6956  USSD        -  38 14 38.08800(N)    076 41 00.18400(W) AD(       ) 3
 HV6956
 HV6956.Superseded values are not recommended for survey control.
 HV6956
 HV6956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6956.See file dsdata.pdf to determine how the superseded data were derived.
 HV6956
 HV6956_MARKER: N = NAIL
 HV6956_SETTING: 0 = UNSPECIFIED SETTING
 HV6956
 HV6956  HISTORY     - Date     Condition        Report By
 HV6956  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6956  HISTORY     - 1927     MARK NOT FOUND   CGS
 HV6956  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6956
 HV6956                          STATION DESCRIPTION
 HV6956
 HV6956'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6956'ON THE SOUTHEASTERN SHORE OF BRETONS BAY, OPPOSITE COMPTON, ABOUT
 HV6956'1-5/8 MILES NE OF KAYWOOD POINT, ABOUT 12 FEET ABOVE HIGH WATER, 3
 HV6956'FEET SE OF EDGE OF BANK, 70 YARDS SW OF LOCUST TREES, AND IN
 HV6956'FRONT OF CEDAR AND SASSAFRAS TREES.  STATION MARK IS NAIL IN STUB.
 HV6956'REFERENCE MARK IS CENTER OF STANDARD MONUMENT OF MARYLAND SHELL
 HV6956'FISH SURVEY WHICH IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8
 HV6956'INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE
 HV6956'SAME MOLD AND SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH
 HV6956'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HV6956'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE CENTER
 HV6956'HOLE IS ALWAYS AT THE CENTER OF THE MONUMENT AND IF THE MARKING
 HV6956'HAS BEEN BROKEN OFF WITHOUT DISTURBING THE BOTTOM, THE CENTER OF
 HV6956'THE SQUARE SECTION MAY BE USED AS THE LOCATION OF THE REFERENCE
 HV6956'MARK.  THE MONUMENT IS SET VERTICALLY IN THE GROUND, WITH TOP
 HV6956'PROJECTING ABOUT 3 TO 5 INCHES ABOVE THE SURFACE.  IT IS 12.87
 HV6956'METERS (42.2 FEET) FROM STATION IN BEARING S 25 DEG 41 MIN E.
 HV6956'DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV6956'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 2-INCH CEDAR TREE,
 HV6956'18.10 METERS (59.4 FEET), S 11 DEG 21 MIN W.  CHIMNEY ON MIDDLE OF
 HV6956'HOUSE, 1 MILE, S 73 DEG 25 MIN W.  NEAR END OF NEAR CHIMNEY OF
 HV6956'PRIESTS HOUSE, 1-1/4 MILES, N 48 DEG 33 MIN W.  NEAR CORNER OF
 HV6956'LARGE OUTSIDE CHIMNEY OF HOUSE, 1-3/8 MILES, N 35 DEG 6 MIN W.
 HV6956'NEAR PEAK OF ROOF OF HOUSE, 1-1/4 MILES, N 8 DEG 34 MIN W.
 HV6956'CHIMNEY OF HOUSE, 1-1/2 MILES, N 7 DEG 17 MIN E.  LARGEST CHIMNEY
 HV6956'OF DUKE HOUSE, 1-3/4 MILES, N 30 DEG 45 MIN E.  NAIL IN BLAZE IN
 HV6956'16-INCH APPLE TREE, 59.59 METERS (195.5 FEET), S 76 DEG 31 MIN E.
 HV6956'LARGE CHIMNEY OF BUILDING AMONG TREES, 1/8 MILE, S 34 DEG 59 MIN
 HV6956'E.  NAIL IN BLAZE IN 4-INCH PERSIMMON TREE, 19.97 METERS (65.5
 HV6956'FEET), S 25 DEG 54 MIN E.
 HV6956
 HV6956                          STATION RECOVERY (1927)
 HV6956
 HV6956'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1927 (HRE)
 HV6956'STATION ROTTED OUT.  REFERENCE MARKS OF MARYLAND SHELL FISH SURVEY
 HV6956'HAVE BEEN MOVED.
 HV6956
 HV6956                          STATION RECOVERY (1958)
 HV6956
 HV6956'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6956'A NEW HOUSE HAS BEEN CONSTRUCTED AT THE STATION SITE.  THERE IS
 HV6956'EVIDENCE THAT THERE WAS A CONSIDERABLE AMOUNT OF EXCAVATION AND
 HV6956'LEVELING IN PREPARATION OF THE PLOT OF GROUND.  IT IS BELIEVED
 HV6956'THAT THE STATION WAS EITHER DESTROYED OR BURIED DURING THAT
 HV6956'PERIOD.  THE STATION SHOULD BE LISTED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3878 ***********************************************************************
 JU3878  DESIGNATION -  FENCE 1898
 JU3878  PID         -  JU3878
 JU3878  STATE/COUNTY-  MD/CECIL
 JU3878  COUNTRY     -  US
 JU3878  USGS QUAD   -  ELKTON (2016)
 JU3878
 JU3878                         *CURRENT SURVEY CONTROL
 JU3878  ______________________________________________________________________
 JU3878* NAD 83(1991) POSITION- 39 31 49.19917(N) 075 50 48.98271(W)   ADJUSTED
 JU3878* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3878  ______________________________________________________________________
 JU3878  GEOID HEIGHT    -        -33.304 (meters)                     GEOID18
 JU3878  LAPLACE CORR    -         -0.77  (seconds)                    DEFLEC18
 JU3878  HORZ ORDER      -  THIRD
 JU3878
 JU3878.The horizontal coordinates were established by classical geodetic methods
 JU3878.and adjusted by the National Geodetic Survey in January 1992.
 JU3878
 JU3878.The orthometric height was scaled from a topographic map.
 JU3878
 JU3878.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3878.GEOID18 height accuracy estimate available here.
 JU3878
 JU3878.Click photographs - Photos may exist for this station.
 JU3878
 JU3878.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3878
 JU3878. The following values were computed from the NAD 83(1991) position.
 JU3878
 JU3878;                    North         East     Units Scale Factor Converg.
 JU3878;SPC MD       -   207,508.783   499,134.395   MT  1.00001504   +0 43 25.3
 JU3878;SPC MD       -   680,801.73  1,637,576.76   sFT  1.00001504   +0 43 25.3
 JU3878;UTM  18      - 4,375,973.329   427,212.118   MT  0.99966523   -0 32 20.7
 JU3878
 JU3878!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3878!SPC MD       -   1.00000526  x   1.00001504  =   1.00002030
 JU3878!UTM  18      -   1.00000526  x   0.99966523  =   0.99967049
 JU3878
 JU3878:                Primary Azimuth Mark                     Grid Az
 JU3878:SPC MD       -  BEAN 1898                                260 45 08.7
 JU3878:UTM  18      -  BEAN 1898                                262 00 54.7
 JU3878
 JU3878_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2721275973(NAD 83)
 JU3878
 JU3878|---------------------------------------------------------------------|
 JU3878| PID    Reference Object                     Distance      Geod. Az  |
 JU3878|                                                           dddmmss.s |
 JU3878| JU3884 NO 1898                             APPROX. 1.4 KM 0841602.6 |
 JU3878| JU3875 BEAN 1898                           APPROX. 0.7 KM 2612834.0 |
 JU3878| JU3877 HARD 1898                           234.151 METERS 33443     |
 JU3878|---------------------------------------------------------------------|
 JU3878
 JU3878                          SUPERSEDED SURVEY CONTROL
 JU3878
 JU3878  NAD 83(1986)-  39 31 49.19047(N)    075 50 48.98785(W) AD(       ) 3
 JU3878  NAD 27      -  39 31 48.79400(N)    075 50 50.21500(W) AD(       ) 3
 JU3878  USSD        -  39 31 49.17500(N)    075 50 50.04200(W) AD(       ) 3
 JU3878
 JU3878.Superseded values are not recommended for survey control.
 JU3878
 JU3878.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3878.See file dsdata.pdf to determine how the superseded data were derived.
 JU3878
 JU3878_MARKER: N = NAIL
 JU3878_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3878_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3878+STABILITY: SURFACE MOTION
 JU3878
 JU3878  HISTORY     - Date     Condition        Report By
 JU3878  HISTORY     - 1898     MONUMENTED       CGS
 JU3878
 JU3878                          STATION DESCRIPTION
 JU3878
 JU3878'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (JBB)
 JU3878'ON THE S SIDE OF BACK CREEK, ABOUT 3/4 MILE ABOVE RANDALL WHARF,
 JU3878'AND AT HIGH-WATER MARK.  MARKED BY A BOX 3 BY 3 INCHES AND 3 FEET
 JU3878'DEEP FILLED WITH CEMENT, A NAIL IN TOP MARKING CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7362 ***********************************************************************
 HV7362  DESIGNATION -  FENNO
 HV7362  PID         -  HV7362
 HV7362  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7362  COUNTRY     -  US
 HV7362  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7362
 HV7362                         *CURRENT SURVEY CONTROL
 HV7362  ______________________________________________________________________
 HV7362* NAD 83(1993) POSITION- 38 43 57.06755(N) 076 42 42.97068(W)   ADJUSTED
 HV7362* NAVD 88 ORTHO HEIGHT -    36.3   (meters)      119.    (feet) VERTCON3
 HV7362  ______________________________________________________________________
 HV7362  GEOID HEIGHT    -        -33.217 (meters)                     GEOID18
 HV7362  LAPLACE CORR    -         -5.14  (seconds)                    DEFLEC18
 HV7362  HORZ ORDER      -  FIRST
 HV7362
 HV7362.The horizontal coordinates were established by classical geodetic methods
 HV7362.and adjusted by the National Geodetic Survey in November 1994.
 HV7362
 HV7362.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7362.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7362
 HV7362.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7362.GEOID18 height accuracy estimate available here.
 HV7362
 HV7362.Click photographs - Photos may exist for this station.
 HV7362
 HV7362.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7362
 HV7362. The following values were computed from the NAD 83(1993) position.
 HV7362
 HV7362;                    North         East     Units Scale Factor Converg.
 HV7362;SPC MD       -   118,353.311   425,046.383   MT  0.99995296   +0 10 50.9
 HV7362;SPC MD       -   388,297.49  1,394,506.34   sFT  0.99995296   +0 10 50.9
 HV7362;UTM  18      - 4,288,485.719   351,199.064   MT  0.99987266   -1 04 16.8
 HV7362
 HV7362!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7362!SPC MD       -   0.99999951  x   0.99995296  =   0.99995247
 HV7362!UTM  18      -   0.99999951  x   0.99987266  =   0.99987217
 HV7362
 HV7362:                Primary Azimuth Mark                     Grid Az
 HV7362:SPC MD       -  FENNO AZ MK                              080 21 15.7
 HV7362:UTM  18      -  FENNO AZ MK                              081 36 23.4
 HV7362
 HV7362_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5119988485(NAD 83)
 HV7362
 HV7362|---------------------------------------------------------------------|
 HV7362| PID    Reference Object                     Distance      Geod. Az  |
 HV7362|                                                           dddmmss.s |
 HV7362| CX2751 FENNO AZ MK                                        0803206.6 |
 HV7362| CX2752 FENNO RM 1                           24.522 METERS 08632     |
 HV7362| HV7367 VORTAC NOTTINGHAM OTT               APPROX. 4.1 KM 2235831.5 |
 HV7362| CX2753 FENNO RM 2                           25.818 METERS 28909     |
 HV7362|---------------------------------------------------------------------|
 HV7362
 HV7362                          SUPERSEDED SURVEY CONTROL
 HV7362
 HV7362  NAD 83(1991)-  38 43 57.06713(N)    076 42 42.97069(W) AD(       ) 1
 HV7362  NAD 83(1986)-  38 43 57.06437(N)    076 42 42.98563(W) AD(       ) 1
 HV7362  NAD 27      -  38 43 56.64682(N)    076 42 44.10269(W) AD(       ) 1
 HV7362  NGVD 29 (07/19/86)   36.6    (m)          120.     (f) VERT ANG       
 HV7362
 HV7362.Superseded values are not recommended for survey control.
 HV7362
 HV7362.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7362.See file dsdata.pdf to determine how the superseded data were derived.
 HV7362
 HV7362_MARKER: DS = TRIANGULATION STATION DISK
 HV7362_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7362_STAMPING: FENNO 1970
 HV7362_MARK LOGO: CGS
 HV7362_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7362+STABILITY: SURFACE MOTION
 HV7362
 HV7362  HISTORY     - Date     Condition        Report By
 HV7362  HISTORY     - 1970     MONUMENTED       NGS
 HV7362
 HV7362                          STATION DESCRIPTION
 HV7362
 HV7362'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7362'THE STATION IS ABOUT 3-1/4 MILES WEST-NORTHWEST OF CROOM, 2-1/2
 HV7362'MILES NORTHEAST OF NAYLOR, 1-1/2 MILES NORTH-NORTHWEST OF
 HV7362'NOTTINGHAM, AND ON THE PROPERTY OF MR. HENRY HARRISON FENNO.
 HV7362'
 HV7362'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV7362'STATE HIGHWAY 382 (CROOM ROAD), GO EAST AND SOUTHEAST ON STATE
 HV7362'HIGHWAY 382 FOR 3.55 MILES TO A STORE IN CROOM ON THE RIGHT,
 HV7362'CONTINUE SOUTHERLY FOR 3.15 MILES TO A SIDE ROAD LEFT (NOTTINGHAM
 HV7362'ROAD) AT A STORE AND TEXACO SERVICE STATION.  TURN LEFT AND GO
 HV7362'EAST ON NOTTINGHAM ROAD FOR 1.7 MILES TO A SIDE ROAD LEFT (FENNO
 HV7362'ROAD), TURN SHARPLY LEFT AND GO NORTH ON FENNO ROAD FOR 0.85 MILE
 HV7362'TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO EAST ON PRIVATE GRADED
 HV7362'ROAD FOR 0.35 MILE TO A FORK, BEAR RIGHT FOR 0.05 MILE TO A FARM
 HV7362'HOUSE AND THE STATION AT THE REAR.  TO REACH THE AZIMUTH MARK FROM
 HV7362'THIS POINT GO NORTH ON THE DRIVEWAY AT THE NORTHEAST SIDE OF THE
 HV7362'HOUSE FOR 0.5 MILE TO FARM ROAD.  TURN RIGHT AND GO NORTHEASTERLY
 HV7362'ON THE FARM ROAD FOR 0.3 MILE TO A BARN, CONTINUE NORTHEASTERLY ON
 HV7362'FARM ROAD FOR 0.25 MILE TO A FORK, BEAR TO THE RIGHT AND GO EAST
 HV7362'ON A FIELD TRACK ROAD FOR 0.3 MILE TO A T FARM ROAD, TURN RIGHT
 HV7362'AND GO SOUTH ON FARM ROAD FOR 0.4 MILE TO THE AZIMUTH MARK ON THE
 HV7362'LEFT.
 HV7362'
 HV7362'THE STATION MARK IS A STANDARD DISK, STAMPED FENNO 1970, SET IN
 HV7362'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER THAT IS
 HV7362'SET 2 INCHES BELOW THE GROUND.  IT IS 156.0 FEET WEST OF A
 HV7362'POWERLINE POLE NUMBERED PEP 844820, 88.0 FEET SOUTHWEST OF A
 HV7362'POWERLINE POLE NUMBERED PEP 844817, AND 66.6 FEET SOUTHEAST OF THE
 HV7362'SOUTHEAST CORNER OF THE HOUSE.  THE UNDERGROUND MARK WAS SET 42
 HV7362'INCHES BELOW THE SURFACE OF THE GROUND.
 HV7362'
 HV7362'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED FENNO NO 1 1970, SET
 HV7362'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER THAT IS
 HV7362'SET FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 96.0 FEET
 HV7362'SOUTHEAST OF THE SOUTHEAST CORNER OF THE HOUSE AND 75.5 FEET WEST
 HV7362'OF THE POWERLINE POLE NUMBERED PEP 844820.  IT IS ABOUT FOUR FEET
 HV7362'LOWER IN ELEVATION THAN THE STATION.
 HV7362'
 HV7362'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED FENNO NO 2 1970, SET
 HV7362'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER THAT IS
 HV7362'SET FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 27.5 FEET
 HV7362'NORTHWEST OF A SMALL SHED, 13.0 FEET SOUTH OF THE POWERLINE POLE
 HV7362'NUMBERED PEP 844817.  IT IS ABOUT THE SAME ELEVATION AS THE STATION.
 HV7362'
 HV7362'AZIMUTH MARK IS A STANDARD DISK, STAMPED FENNO 1970, SET IN THE
 HV7362'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER THAT IS SET
 HV7362'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 6.5 FEET EAST OF A
 HV7362'FARM ROAD AND 1.5 FEET SOUTH OF A METAL WITNESS POST.
 HV7362'
 HV7362'REFERENCE MARKS 1 AND 2 WERE NOT MEASURED BETWEEN BECAUSE OF
 HV7362'OBSTRUCTIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1463 ***********************************************************************
 HU1463  DESIGNATION -  FENWICK ISLAND RM 5
 HU1463  PID         -  HU1463
 HU1463  STATE/COUNTY-  MD/WORCESTER
 HU1463  COUNTRY     -  US
 HU1463  USGS QUAD   -  ASSAWOMAN BAY (2016)
 HU1463
 HU1463                         *CURRENT SURVEY CONTROL
 HU1463  ______________________________________________________________________
 HU1463* NAD 83(1991) POSITION- 38 27 04.00743(N) 075 03 15.40045(W)   ADJUSTED
 HU1463* NAVD 88 ORTHO HEIGHT -     2.17  (+/-2cm)        7.1   (feet) VERTCON3
 HU1463  ______________________________________________________________________
 HU1463  GEOID HEIGHT    -        -35.924 (meters)                     GEOID18
 HU1463  LAPLACE CORR    -         -0.83  (seconds)                    DEFLEC18
 HU1463  HORZ ORDER      -  SECOND
 HU1463  VERT ORDER      -  THIRD ? (See Below)
 HU1463
 HU1463.The horizontal coordinates were established by classical geodetic methods
 HU1463.and adjusted by the National Geodetic Survey in January 1992.
 HU1463
 HU1463.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1463.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1463
 HU1463.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1463.GEOID18 height accuracy estimate available here.
 HU1463
 HU1463.The vertical order pertains to the NGVD 29 superseded value.
 HU1463
 HU1463.Click photographs - Photos may exist for this station.
 HU1463
 HU1463.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1463
 HU1463. The following values were computed from the NAD 83(1991) position.
 HU1463
 HU1463;                    North         East     Units Scale Factor Converg.
 HU1463;SPC MD       -    88,886.691   569,828.640   MT  0.99997715   +1 13 16.3
 HU1463;SPC MD       -   291,622.42  1,869,512.80   sFT  0.99997715   +1 13 16.3
 HU1463;UTM  18      - 4,255,870.286   495,263.885   MT  0.99960028   -0 02 01.5
 HU1463
 HU1463!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1463!SPC MD       -   1.00000530  x   0.99997715  =   0.99998245
 HU1463!UTM  18      -   1.00000530  x   0.99960028  =   0.99960557
 HU1463
 HU1463:                Primary Azimuth Mark                     Grid Az
 HU1463:SPC MD       -  PINE                                     227 04 48.7
 HU1463:UTM  18      -  PINE                                     228 20 06.5
 HU1463
 HU1463_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9526355870(NAD 83)
 HU1463
 HU1463|---------------------------------------------------------------------|
 HU1463| PID    Reference Object                     Distance      Geod. Az  |
 HU1463|                                                           dddmmss.s |
 HU1463| DC7290 FENWICK ISLAND AZ MK RESET                         0930528.5 |
 HU1463| HU1464 OCEAN CITY TANK                     APPROX. 1.0 KM 1842754.2 |
 HU1463| HU0360 PINE                                APPROX. 6.7 KM 2281805.0 |
 HU1463| HU1443 BOUNDARY MON INITIAL DE MD           60.531 METERS 28450     |
 HU1463| HU0379 1                                    54.649 METERS 28620     |
 HU1463| HU1442 FENWICK IS LH                        64.717 METERS 29515     |
 HU1463| HU0377 FENWICK ISLAND                       25.591 METERS 32407     |
 HU1463|---------------------------------------------------------------------|
 HU1463
 HU1463                          SUPERSEDED SURVEY CONTROL
 HU1463
 HU1463  NAD 83(1986)-  38 27 03.98866(N)    075 03 15.42396(W) AD(       ) 2
 HU1463  NAD 27      -  38 27 03.57964(N)    075 03 16.77135(W) AD(       ) 2
 HU1463  NGVD 29               2.41   (m)            7.9    (f) LEVELING    3  
 HU1463
 HU1463.Superseded values are not recommended for survey control.
 HU1463
 HU1463.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1463.See file dsdata.pdf to determine how the superseded data were derived.
 HU1463
 HU1463_MARKER: DR = REFERENCE MARK DISK
 HU1463_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1463_STAMPING: FENWICK ISLAND 1932 NO 5 1974
 HU1463_MARK LOGO: NGS
 HU1463_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1463+STABILITY: SURFACE MOTION
 HU1463
 HU1463  HISTORY     - Date     Condition        Report By
 HU1463  HISTORY     - 1974     MONUMENTED       NGS
 HU1463  HISTORY     - 1976     GOOD             NGS
 HU1463  HISTORY     - 20060522 MARK NOT FOUND   GEOCAC
 HU1463
 HU1463                          STATION DESCRIPTION
 HU1463
 HU1463'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1463'THE STATION IS LOCATED AT FENWICK ISLAND, NEAR THE FENWICK ISLAND,
 HU1463'LIGHTHOUSE AND ON LAND OWNED BY MR. ISAIAH MUMFORD, SELBYVILLE,
 HU1463'DELAWARE.  TELEPHONE NUMBER 436-5690.
 HU1463'
 HU1463'TO REACH THE STATION FROM THE JUNCTION OF STATE ROADS 14 AND 54
 HU1463'IN FENWICK ISLAND, GO SOUTH ON STATE ROAD 14 FOR 0.05 MILE TO THE
 HU1463'STATE LINE AND A SIDE ROAD RIGHT AND THE AZIMUTH MARK ON THE EAST
 HU1463'SIDE OF STATE ROAD 14.  TURN RIGHT AND GO WEST ON A SAND ROAD FOR
 HU1463'0.1 MILE TO THE STATION ON THE LEFT, JUST BEFORE REACHING THE
 HU1463'LIGHTHOUSE.
 HU1463'
 HU1463'STATION MARK, A STANDARD REFERENCE MARK DISK STAMPED FENWICK
 HU1463'ISLAND 1932 RM 5 1974, IS SET IN THE TOP OF A 12-INCH CYLINDRICAL
 HU1463'CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS
 HU1463'60.5 FEET SOUTH-SOUTHEAST OF POWERLINE POLE NUMBER 24-209AC AND
 HU1463'36 FEET SOUTH OF THE CENTER OF THE SAND ROAD.  NO UNDERGROUND
 HU1463'DISK WAS ESTABLISHED.
 HU1463'
 HU1463'FENWICK ISLAND STATION MARKS ARE STANDARD DISKS STAMPED FENWICK
 HU1463'ISLAND 1932.  THE SURFACE DISK IS SET IN THE TOP OF A 12 INCH
 HU1463'SQUARE CONCRETE MONUMENT THAT PROJECTS 4 INCHES ABOVE THE GROUND
 HU1463'SURFACE.  IT IS 33 FEET NORTH-NORTHEAST OF THE CENTER OF THE
 HU1463'SAND ROAD, 20 FEET NORTHWEST OF POWERLINE POLE NUMBER 24-209AC
 HU1463'AND UNDER THE NORTH EDGE OF A WHITE TRAILER HOUSE.  THE
 HU1463'UNDERGROUND DISK IS SET IN THE TOP OF AN IRREGULAR MASS OF
 HU1463'CONCRETE 42 INCHES BELOW THE GROUND SURFACE.
 HU1463'
 HU1463'REFERENCE MARK 2, A STANDARD DISK STAMPED FENWICK ISLAND NO 2
 HU1463'1932, IS CEMENTED IN A DRILL HOLE IN THE TOP OF THE BOUNDARY
 HU1463'MONUMENT.  IT IS 31 FEET SOUTH OF THE DOOR LEADING TO THE
 HU1463'LIGHTHOUSE, 23 FEET EAST OF POWERLINE POLE NUMBER 24-209D AND 18
 HU1463'FEET NORTH OF THE CENTER OF THE SAND ROAD.
 HU1463'
 HU1463'COAST GUARD MARK, A STANDARD COAST GUARD DISK STAMPED NO 1, IS
 HU1463'SET IN THE TOP OF A 4 INCH SQUARE CONCRETE MONUMENT THAT PROJECTS
 HU1463'2 FEET ABOVE THE GROUND SURFACE.  IT IS 16 FEET NORTH OF THE
 HU1463'CENTER OF THE SAND ROAD AND 1.5 FEET SOUTHWEST OF A FENCE CORNER.
 HU1463'
 HU1463'AZIMUTH MARK, A STANDARD DISK STAMPED FENWICK ISLAND 1932 RESET
 HU1463'1962, IS SET IN THE TOP OF A 12 INCH SQUARE CONCRETE MONUMENT
 HU1463'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 54 FEET EAST OF THE
 HU1463'CENTER OF THE DIVIDER OF STATE ROAD 14, 2 FEET WEST OF A METAL
 HU1463'WITNESS POST AND 2 FEET NORTHWEST OF POWERLINE POLE NUMBER 150A.
 HU1463'
 HU1463'HEIGHT OF LIGHT ABOVE STATION MARK 30.6 METERS.
 HU1463
 HU1463                          STATION RECOVERY (1976)
 HU1463
 HU1463'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1463'THE STATION WAS RECOVERED AND FOUND IN GOOD CONDITION AS PREVIOUSLY
 HU1463'DESCRIBED.
 HU1463'
 HU1463'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1463'AT FENWICK ISLAND.
 HU1463
 HU1463                          STATION RECOVERY (2006)
 HU1463
 HU1463'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 HU1463'SAND ROAD HAS BEEN PAVED AND WIDENED - NOW KNOWN AS 146TH ST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6344 ***********************************************************************
 HV6344  DESIGNATION -  FERGUSON
 HV6344  PID         -  HV6344
 HV6344  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6344  COUNTRY     -  US
 HV6344  USGS QUAD   -  ANNAPOLIS (2016)
 HV6344
 HV6344                         *CURRENT SURVEY CONTROL
 HV6344  ______________________________________________________________________
 HV6344* NAD 83(1991) POSITION- 38 59 47.85581(N) 076 27 54.02381(W)   ADJUSTED
 HV6344* NAVD 88 ORTHO HEIGHT -    23.    (meters)       75.    (feet) SCALED
 HV6344  ______________________________________________________________________
 HV6344  GEOID HEIGHT    -        -33.362 (meters)                     GEOID18
 HV6344  LAPLACE CORR    -         -3.38  (seconds)                    DEFLEC18
 HV6344  HORZ ORDER      -  SECOND
 HV6344
 HV6344.The horizontal coordinates were established by classical geodetic methods
 HV6344.and adjusted by the National Geodetic Survey in January 1992.
 HV6344
 HV6344.The orthometric height was scaled from a topographic map.
 HV6344
 HV6344.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6344.GEOID18 height accuracy estimate available here.
 HV6344
 HV6344.Click photographs - Photos may exist for this station.
 HV6344
 HV6344.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6344
 HV6344. The following values were computed from the NAD 83(1991) position.
 HV6344
 HV6344;                    North         East     Units Scale Factor Converg.
 HV6344;SPC MD       -   147,767.528   446,344.267   MT  0.99995206   +0 20 08.8
 HV6344;SPC MD       -   484,800.63  1,464,381.15   sFT  0.99995206   +0 20 08.8
 HV6344;UTM  18      - 4,317,423.002   373,133.577   MT  0.99979819   -0 55 19.3
 HV6344
 HV6344!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6344!SPC MD       -   1.00000166  x   0.99995206  =   0.99995372
 HV6344!UTM  18      -   1.00000166  x   0.99979819  =   0.99979985
 HV6344
 HV6344_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7313317423(NAD 83)
 HV6344
 HV6344                          SUPERSEDED SURVEY CONTROL
 HV6344
 HV6344  NAD 83(1986)-  38 59 47.85196(N)    076 27 54.03518(W) AD(       ) 2
 HV6344  NAD 27      -  38 59 47.45000(N)    076 27 55.17700(W) AD(       ) 2
 HV6344
 HV6344.Superseded values are not recommended for survey control.
 HV6344
 HV6344.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6344.See file dsdata.pdf to determine how the superseded data were derived.
 HV6344
 HV6344_MARKER: DD = SURVEY DISK
 HV6344_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6344
 HV6344  HISTORY     - Date     Condition        Report By
 HV6344  HISTORY     - 1946     MONUMENTED       USN
 HV6344  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6344
 HV6344                          STATION DESCRIPTION
 HV6344
 HV6344'DESCRIBED BY US NAVY 1946 (JF)
 HV6344'STATION IS LOCATED ABOUT 1-1/2 MILES NORTHEAST OF ANNAPOLIS, ON
 HV6344'GREENBURY POINT BETWEEN MILL CREEK AND THE SEVERN RIVER, ABOUT
 HV6344'150 YARDS NORTH OF GREENBURY POINT ROAD, NEAR THE 7TH GREEN OF
 HV6344'THE GOLF COURSE.
 HV6344'
 HV6344'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 450
 HV6344'AND 648 AT THE NORTHEAST END OF THE OLD SEVERN RIVER BRIDGE, GO
 HV6344'EASTERLY ON STATE HIGHWAY 648 (BALTO-ANNAPOLIS RD) FOR 0.45 MILE
 HV6344'TO POINT WHERE STATE HIGHWAY 648 TURN LEFT (EDGEWOOD RD AND
 HV6344'GREENBURY POINT RD), CONTINUE EASTERLY ON GREENBURY POINT ROAD
 HV6344'FOR 0.15 MILE TO SIDE ROAD RIGHT, KINKAID ROAD, CONTINUE AHEAD ON
 HV6344'GREENBURY POINT ROAD FOR 0.45 MILE TO A LARGE RADIO TOWER ON
 HV6344'THE RIGHT AND THE STATION ABOUT 150 YARD ON LEFT AT 7TH GREEN
 HV6344'OF THE GOLF COURSE.
 HV6344'
 HV6344'FERGUSON (USNA) IS A MARYLAND GRID MARK SET IN TOP OF 7 INCH
 HV6344'SQUARE CONCRETE MONUMENT PROJECTING ABOUT 4 INCHES ABOVE GROUND AND
 HV6344'IS STAMPED FERGUSON 1946.  IT IS 94.5 FEET EAST-SOUTHEAST OF A
 HV6344'WITNESS SIGN NAILED TO A TREE 42 FEET NORTHEAST OF NORTHWEST POST
 HV6344'OF A SHORT CABLE FENCE AND 32 FEET NORTH OF CENTER OF GRAVEL GOLF
 HV6344'CART ROAD.
 HV6344'
 HV6344'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV6344'1-1/2 MILES NORTHEAST OF ANNAPOLIS.
 HV6344
 HV6344                          STATION RECOVERY (1961)
 HV6344
 HV6344'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 HV6344'STATION WAS SEARCHED FOR BUT NOT RECOVERED.  SNOW AND ICE MADE
 HV6344'SEARCH DIFFICULT.  THE 7TH GREEN HAS BEEN CHANGED TO THE 2ND
 HV6344'GREEN ACCORDING TO CARETAKER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5820 ***********************************************************************
 JV5820  DESIGNATION -  FERNDALE STANDPIPE
 JV5820  PID         -  JV5820
 JV5820  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5820  COUNTRY     -  US
 JV5820  USGS QUAD   -  RELAY (2016)
 JV5820
 JV5820                         *CURRENT SURVEY CONTROL
 JV5820  ______________________________________________________________________
 JV5820* NAD 83(1991) POSITION- 39 11 33.84417(N) 076 38 25.04619(W)   ADJUSTED
 JV5820  ______________________________________________________________________
 JV5820  GEOID HEIGHT    -        -32.764 (meters)                     GEOID18
 JV5820  LAPLACE CORR    -         -5.46  (seconds)                    DEFLEC18
 JV5820  HORZ ORDER      -  THIRD
 JV5820
 JV5820.The horizontal coordinates were established by classical geodetic methods
 JV5820.and adjusted by the National Geodetic Survey in January 1992.
 JV5820
 JV5820.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5820.GEOID18 height accuracy estimate available here.
 JV5820
 JV5820.Click photographs - Photos may exist for this station.
 JV5820
 JV5820.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5820
 JV5820. The following values were computed from the NAD 83(1991) position.
 JV5820
 JV5820;                    North         East     Units Scale Factor Converg.
 JV5820;SPC MD       -   169,463.392   431,074.453   MT  0.99996511   +0 13 32.8
 JV5820;SPC MD       -   555,981.15  1,414,283.43   sFT  0.99996511   +0 13 32.8
 JV5820;UTM  18      - 4,339,446.427   358,346.561   MT  0.99984707   -1 02 12.2
 JV5820
 JV5820_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5834639446(NAD 83)
 JV5820
 JV5820                          SUPERSEDED SURVEY CONTROL
 JV5820
 JV5820  NAD 83(1986)-  39 11 33.84098(N)    076 38 25.05572(W) AD(       ) 3
 JV5820  NAD 27      -  39 11 33.45300(N)    076 38 26.17300(W) AD(       ) 3
 JV5820
 JV5820.Superseded values are not recommended for survey control.
 JV5820
 JV5820.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5820.See file dsdata.pdf to determine how the superseded data were derived.
 JV5820
 JV5820_MARKER: 52 = STANDPIPE TANK
 JV5820_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5820+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2003
 JV5820
 JV5820  HISTORY     - Date     Condition        Report By
 JV5820  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5820  HISTORY     - 1975     GOOD             NGS
 JV5820  HISTORY     - 1977     GOOD             NGS
 JV5820  HISTORY     - 1983     GOOD             NGS
 JV5820  HISTORY     - 1985     GOOD             USPSQD
 JV5820  HISTORY     - 20030930 GOOD             USPSQD
 JV5820
 JV5820                          STATION DESCRIPTION
 JV5820
 JV5820'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5820'STATION IS LOCATED ON A HIGH WOODED HILL NEAR NORTH EDGE OF THE
 JV5820'VILLAGE OF FERNDALE AND ABOUT 2-1/2 MILES NORTH-NORTHWEST OF
 JV5820'GLEN BURNIE.  STATION IS OF STEEL CONSTRUCTION ABOUT 100 FEET
 JV5820'HIGH.  THE UPPER PART OF TANK IS PAINTED RED AND WHITE CHECKED
 JV5820'AND THE LOWER PART IS SILVER COLOR.  THE POINT INTERSECTED WAS
 JV5820'THE EXTREME TOP OF STANDPIPE.
 JV5820
 JV5820                          STATION RECOVERY (1975)
 JV5820
 JV5820'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5820'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5820
 JV5820                          STATION RECOVERY (1977)
 JV5820
 JV5820'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (DRM)
 JV5820'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5820'
 JV5820'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN FERNDALE.
 JV5820
 JV5820                          STATION RECOVERY (1983)
 JV5820
 JV5820'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (MLS)
 JV5820'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5820'
 JV5820'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN FERNDALE.
 JV5820
 JV5820                          STATION RECOVERY (1985)
 JV5820
 JV5820'RECOVERY NOTE BY US POWER SQUADRON 1985 (WRB)
 JV5820'STATION RECOVERED AS DESCRIBED AND IS IN GOOD CONDITION.
 JV5820
 JV5820                          STATION RECOVERY (2003)
 JV5820
 JV5820'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5820'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2734 ***********************************************************************
 JV2734  DESIGNATION -  FERNWOOD
 JV2734  PID         -  JV2734
 JV2734  STATE/COUNTY-  MD/MONTGOMERY
 JV2734  COUNTRY     -  US
 JV2734  USGS QUAD   -  ROCKVILLE (2016)
 JV2734
 JV2734                         *CURRENT SURVEY CONTROL
 JV2734  ______________________________________________________________________
 JV2734* NAD 83(1993) POSITION- 39 00 48.62900(N) 077 08 01.15398(W)   ADJUSTED
 JV2734* NAVD 88 ORTHO HEIGHT -   112.144 (meters)      367.93  (feet) ADJUSTED
 JV2734  ______________________________________________________________________
 JV2734  GEOID HEIGHT    -        -31.793 (meters)                     GEOID18
 JV2734  LAPLACE CORR    -         -2.19  (seconds)                    DEFLEC18
 JV2734  DYNAMIC HEIGHT  -        112.084 (meters)      367.73  (feet) COMP
 JV2734  MODELED GRAVITY -    980,096.1   (mgal)                       NAVD 88
 JV2734
 JV2734  HORZ ORDER      -  SECOND
 JV2734  VERT ORDER      -  SECOND    CLASS 0
 JV2734
 JV2734.The horizontal coordinates were established by classical geodetic methods
 JV2734.and adjusted by the National Geodetic Survey in November 1994.
 JV2734
 JV2734.The orthometric height was determined by differential leveling and
 JV2734.adjusted by the NATIONAL GEODETIC SURVEY
 JV2734.in June 1991.
 JV2734
 JV2734.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2734.GEOID18 height accuracy estimate available here.
 JV2734
 JV2734.Click photographs - Photos may exist for this station.
 JV2734
 JV2734.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2734
 JV2734.The dynamic height is computed by dividing the NAVD 88
 JV2734.geopotential number by the normal gravity value computed on the
 JV2734.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2734.degrees latitude (g = 980.6199 gals.).
 JV2734
 JV2734.The modeled gravity was interpolated from observed gravity values.
 JV2734
 JV2734. The following values were computed from the NAD 83(1993) position.
 JV2734
 JV2734;                    North         East     Units Scale Factor Converg.
 JV2734;SPC MD       -   149,514.215   388,424.798   MT  0.99995273   -0 05 02.0
 JV2734;SPC MD       -   490,531.22  1,274,357.02   sFT  0.99995273   -0 05 02.0
 JV2734;UTM  18      - 4,320,441.397   315,269.349   MT  1.00002022   -1 20 36.7
 JV2734
 JV2734!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2734!SPC MD       -   0.99998739  x   0.99995273  =   0.99994012
 JV2734!UTM  18      -   0.99998739  x   1.00002022  =   1.00000761
 JV2734
 JV2734:                Primary Azimuth Mark                     Grid Az
 JV2734:SPC MD       -  MEDICAL CENTER                           110 57 33.1
 JV2734:UTM  18      -  MEDICAL CENTER                           112 13 07.8
 JV2734
 JV2734_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1526920441(NAD 83)
 JV2734
 JV2734|---------------------------------------------------------------------|
 JV2734| PID    Reference Object                     Distance      Geod. Az  |
 JV2734|                                                           dddmmss.s |
 JV2734| JV2733 FERNWOOD AZ MK                                     0260035.1 |
 JV2734| JV4314 MEDICAL CENTER                      APPROX. 3.6 KM 1105231.1 |
 JV2734| JV4363 FERNWOOD RM 3                        85.096 METERS 17051     |
 JV2734| JV2736 FERNWOOD RM 1                        15.165 METERS 23854     |
 JV2734| JV2735 FERNWOOD RM 2                        24.520 METERS 31509     |
 JV2734|---------------------------------------------------------------------|
 JV2734
 JV2734                          SUPERSEDED SURVEY CONTROL
 JV2734
 JV2734  NAD 83(1991)-  39 00 48.62853(N)    077 08 01.15494(W) AD(       ) 2
 JV2734  NAD 83(1986)-  39 00 48.62833(N)    077 08 01.16473(W) AD(       ) 2
 JV2734  NAD 27      -  39 00 48.23330(N)    077 08 02.23359(W) AD(       ) 2
 JV2734  NGVD 29             112.37   (m)          368.7    (f) LEVELING    3  
 JV2734  NGVD 29 (11/26/84)  112.372  (m)          368.67   (f) ADJUSTED    2 0
 JV2734
 JV2734.Superseded values are not recommended for survey control.
 JV2734
 JV2734.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2734.See file dsdata.pdf to determine how the superseded data were derived.
 JV2734
 JV2734_MARKER: DS = TRIANGULATION STATION DISK
 JV2734_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2734_STAMPING: FERNWOOD 1958
 JV2734_MARK LOGO: CGS
 JV2734_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2734+STABILITY: SURFACE MOTION
 JV2734
 JV2734  HISTORY     - Date     Condition        Report By
 JV2734  HISTORY     - 1958     MONUMENTED       CGS
 JV2734  HISTORY     - 1958     GOOD             CGS
 JV2734  HISTORY     - 1969     GOOD             CGS
 JV2734  HISTORY     - 1978     GOOD             LOCENG
 JV2734
 JV2734                          STATION DESCRIPTION
 JV2734
 JV2734'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2734'STATION IS LOCATED NEAR THE END OF FERNWOOD ROAD ABOUT 9.0 MILES
 JV2734'NORTH-NORTHEAST OF THE CENTER OF WASHINGTON D.C. AND ABOUT
 JV2734'4-1/2 MILES SOUTH OF THE CENTER OF ROCKVILLE.  STATION IS 12 FEET
 JV2734'EAST-NORTHEAST OF A BLAZED TREE, 13-1/2 FEET NORTH OF PINE TREE,
 JV2734'15-1/2 FEET WEST OF AN OAK TREE AND 4 FEET WEST OF A WITNESS
 JV2734'POST, THE MARK PROJECTS 2 INCHES AND THE DISK IS STAMPED FERNWOOD
 JV2734'1958.
 JV2734'
 JV2734'REFERENCE MARK NO. 1 IS 11 FEET NORTHWEST OF A PINE TREE AND 11 FEET
 JV2734'NORTHEAST OF A PINE TREE.  THE MARK PROJECTS 2 INCHES AND THE DISK
 JV2734'IS STAMPED FERNWOOD NO 1 1958.
 JV2734'
 JV2734'REFERENCE MARK NO. 2 IS 10 FEET WEST OF A BLACK OAK TREE AND 8
 JV2734'FEET SOUTH OF A POPLAR TREE.  THE MARK PROJECTS 4 INCHES AND THE
 JV2734'DISK IS STAMPED FERNWOOD NO 2 1958.
 JV2734'
 JV2734'AZIMUTH MARK IS 36-1/2 FEET WEST-NORTHWEST OF THE APPROXIMATE
 JV2734'CENTERLINE OF FERNWOOD ROAD, 13-1/2 FEET WEST-SOUTHWEST OF
 JV2734'POWERLINE POLE, 7-1/4 FEET NORTH OF OAK TREE AND 3 FEET
 JV2734'WEST-SOUTHWEST OF WITNESS POST.  THE MARK PROJECTS 4 INCHES AND
 JV2734'THE DISK IS STAMPED FERNWOOD 1958.
 JV2734'
 JV2734'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 240 AND STATE HIGHWAY
 JV2734'NO. 187 WHICH IS ABOUT 2.75 MILES SOUTHEAST OF ROCKVILLE, GO
 JV2734'SOUTHERLY ON STATE HIGHWAY NO. 187 (GEORGETOWN ROAD) FOR 1.55 MILES
 JV2734'TO OVERPASS WHERE STATE HIGHWAY NO. 187 (GEORGETOWN ROAD)
 JV2734'PASSES OVER WASHINGTON CIRCUMFERENTIAL HIGHWAY.  CONTINUE
 JV2734'SOUTHERLY ON STATE HIGHWAY NO. 187 FOR 2.6 MILES TO GREENTREE
 JV2734'ROAD RIGHT.  TURN RIGHT AND GO WESTERLY ON GREENTREE ROAD FOR
 JV2734'1.15 MILES TO BRADLEY HILLS PRESBYTERIAN CHURCH ON LEFT.
 JV2734'CONTINUE WESTERLY ON GREENTREE ROAD FOR 0.2 MILE TO CROSS ROADS
 JV2734'AT FORKS.  TAKE RIGHT FORK AND GO NORTH ON FERNWOOD ROAD FOR 0.6
 JV2734'MILE TO TOP OF HILL AND CLEARED TRAIL ON LEFT JUST BEFORE REACHING
 JV2734'SMALL HOUSE ON LEFT.  STATION IS ABOUT 30 PACES LEFT (NORTHEAST)
 JV2734'ON ROAD IN CLEARED TRAIL.  CONTINUE EASTERLY ON FERNWOOD ROAD FOR
 JV2734'0.05 MILE TO AZIMUTH MARK ON RIGHT (SOUTHWEST) SIDE OF ROAD AS
 JV2734'DESCRIBED.
 JV2734'
 JV2734'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV2734
 JV2734                          STATION RECOVERY (1958)
 JV2734
 JV2734'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2734'4.7 MI NE FROM CABIN JOHN.
 JV2734'ABOUT 2.5 MILES NORTH ALONG THE SEVEN LOCKS ROAD FROM THE FIRE
 JV2734'STATION AT CABIN JOHN, THENCE 1.2 MILES SOUTHEAST ALONG BRADLEY
 JV2734'BOULEVARD, THENCE 0.2 MILE NORTHEAST ALONG BURDETTE ROAD, THENCE
 JV2734'0.3 MILE SOUTHEAST ALONG GREEN TREE ROAD, THENCE 0.5 MILE NORTH
 JV2734'ALONG FERNWOOD ROAD, IN A HEAVILY WOODED AREA, ABOUT 0.2 MILE
 JV2734'SOUTH OF THE JUNCTION OF FERNWOOD ROAD AND STONEHAM ROAD, ABOUT
 JV2734'150 FEET SOUTH OF THE SOUTH SIDE OF A MR. JAMES F. QUEEN RESIDENCE,
 JV2734'113 FEET WEST OF THE CENTER LINE OF FERNWOOD ROAD, 4 1/2 FEET
 JV2734'EAST OF A WHITE WOODEN WITNESS POST, SET IN THE TOP OF A CONCRETE
 JV2734'POST FLUSH WITH THE GROUND.
 JV2734
 JV2734                          STATION RECOVERY (1969)
 JV2734
 JV2734'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV2734'THE STATION MARK, REFERENCE MARKS 1, 2 AND THE AZIMUTH MARK WERE
 JV2734'RECOVERED IN A SOLID CONDITION, HOWEVER A DIFFERENCE IN THE
 JV2734'DISTANCE AND THE CARDINAL DIRECTION TO THE REFERENCE MARKS WAS
 JV2734'NOTED.  REFERENCE MARK 1 HAS BEEN OBLITERATED AND PART OF THE
 JV2734'STAMPING IS NOT LEGIBLE.  THE AZIMUTH MARK IS NOT VISIBLE FROM
 JV2734'THE GROUND.  DUE TO THE PROXIMITY OF THE STATION TO A CUTBANK OF
 JV2734'A HIGHWAY A TOWER COULD NOT BE ERECTED OVER THE STATION,
 JV2734'FERNWOOD 1958 RM 3 WAS ESTABLISHED.  A GEODIMETER MEASUREMENT
 JV2734'WAS MADE BETWEEN THE STATIONS, THE DISTANCE BEING 85.065
 JV2734'METERS, (279.08 FEET) SOUTH.
 JV2734'
 JV2734'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV2734'4 MILES EAST OF POTOMAC.
 JV2734
 JV2734                          STATION RECOVERY (1978)
 JV2734
 JV2734'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1978
 JV2734'THE STATION MARK AND AZIMUTH MARK WERE RECOVERED IN GOOD CONDITION.
 JV2734'
 JV2734'REFERENCE MARKS 1 AND 2 WERE NOT CHECKED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2733 ***********************************************************************
 JV2733  DESIGNATION -  FERNWOOD AZ MK
 JV2733  PID         -  JV2733
 JV2733  STATE/COUNTY-  MD/MONTGOMERY
 JV2733  COUNTRY     -  US
 JV2733  USGS QUAD   -  ROCKVILLE (2016)
 JV2733
 JV2733                         *CURRENT SURVEY CONTROL
 JV2733  ______________________________________________________________________
 JV2733* NAD 83(1986) POSITION- 39 00 53.     (N) 077 08 00.     (W)   SCALED
 JV2733* NAVD 88 ORTHO HEIGHT -   110.976 (meters)      364.09  (feet) ADJUSTED
 JV2733  ______________________________________________________________________
 JV2733  GEOID HEIGHT    -        -31.792 (meters)                     GEOID18
 JV2733  DYNAMIC HEIGHT  -        110.917 (meters)      363.90  (feet) COMP
 JV2733  MODELED GRAVITY -    980,096.2   (mgal)                       NAVD 88
 JV2733
 JV2733  VERT ORDER      -  SECOND    CLASS 0
 JV2733
 JV2733.The horizontal coordinates were scaled from a map and have
 JV2733.an estimated accuracy of +/- 6 seconds.
 JV2733
 JV2733.The orthometric height was determined by differential leveling and
 JV2733.adjusted by the NATIONAL GEODETIC SURVEY
 JV2733.in June 1991.
 JV2733
 JV2733.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2733.GEOID18 height accuracy estimate available here.
 JV2733
 JV2733.Click photographs - Photos may exist for this station.
 JV2733
 JV2733.The dynamic height is computed by dividing the NAVD 88
 JV2733.geopotential number by the normal gravity value computed on the
 JV2733.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2733.degrees latitude (g = 980.6199 gals.).
 JV2733
 JV2733.The modeled gravity was interpolated from observed gravity values.
 JV2733
 JV2733;                    North         East    Units  Estimated Accuracy
 JV2733;SPC MD       -   149,650.      388,450.      MT  (+/- 180 meters Scaled)
 JV2733
 JV2733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ153205(NAD 83)
 JV2733
 JV2733                          SUPERSEDED SURVEY CONTROL
 JV2733
 JV2733  NGVD 29 (11/26/84)  111.204  (m)          364.84   (f) ADJUSTED    2 0
 JV2733
 JV2733.Superseded values are not recommended for survey control.
 JV2733
 JV2733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2733.See file dsdata.pdf to determine how the superseded data were derived.
 JV2733
 JV2733_MARKER: DZ = AZIMUTH MARK DISK
 JV2733_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2733_STAMPING: FERNWOOD 1958
 JV2733_MARK LOGO: CGS
 JV2733_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2733+STABILITY: SURFACE MOTION
 JV2733
 JV2733  HISTORY     - Date     Condition        Report By
 JV2733  HISTORY     - 1958     MONUMENTED       CGS
 JV2733
 JV2733                          STATION DESCRIPTION
 JV2733
 JV2733'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2733'4.8 MI NE FROM CABIN JOHN.
 JV2733'ABOUT 2.5 MILES NORTH ALONG SEVEN LOCKS ROAD FROM THE FIRE
 JV2733'STATION AT CABIN JOHN, THENCE 1.2 MILES SOUTHEAST ALONG BRADLEY
 JV2733'BOULEVARD, THENCE 0.2 MILE NORTHEAST ALONG BURDETTE ROAD, THENCE
 JV2733'0.3 MILE SOUTHEAST ALONG GREEN TREE ROAD, THENCE 0.6 MILE NORTH
 JV2733'ALONG FERNWOOD ROAD, ABOUT 250 FEET NORTHEAST AND ACROSS THE
 JV2733'AVENUE FROM THE RESIDENCE OF MR. JAMES F. QUEEN, ABOUT 0.1
 JV2733'MILE SOUTH OF THE T JUNCTION OF FERNWOOD ROAD AND STONEHAM ROAD,
 JV2733'37 1/2 FEET EAST OF THE CENTER LINE OF FERNWOOD AVENUE, 14 FEET
 JV2733'EAST OF POWER LINE POLE NO. 642510, 7 1/2 FEET WEST OF A 20-INCH
 JV2733'OAK TREE, 3 FEET SOUTHEAST OF A WHITE WOODEN WITNESS POST, SET
 JV2733'IN THE TOP OF A CONCRETE POST PROJECTING 5 INCHES ABOVE THE
 JV2733'GROUND AND ABOUT 1 FOOT ABOVE THE LEVEL OF THE AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2736 ***********************************************************************
 JV2736  DESIGNATION -  FERNWOOD RM 1
 JV2736  PID         -  JV2736
 JV2736  STATE/COUNTY-  MD/MONTGOMERY
 JV2736  COUNTRY     -  US
 JV2736  USGS QUAD   -  ROCKVILLE (2016)
 JV2736
 JV2736                         *CURRENT SURVEY CONTROL
 JV2736  ______________________________________________________________________
 JV2736* NAD 83(1986) POSITION- 39 00 48.38   (N) 077 08 01.69   (W)   HD_HELD1
 JV2736* NAVD 88 ORTHO HEIGHT -   112.065 (meters)      367.67  (feet) ADJUSTED
 JV2736  ______________________________________________________________________
 JV2736  GEOID HEIGHT    -        -31.793 (meters)                     GEOID18
 JV2736  DYNAMIC HEIGHT  -        112.005 (meters)      367.47  (feet) COMP
 JV2736  MODELED GRAVITY -    980,096.1   (mgal)                       NAVD 88
 JV2736
 JV2736  VERT ORDER      -  SECOND    CLASS 0
 JV2736
 JV2736.The horizontal coordinates were determined by differentially corrected
 JV2736.hand held GPS observations or other comparable positioning techniques
 JV2736.and have an estimated accuracy of +/- 3 meters.
 JV2736
 JV2736.The orthometric height was determined by differential leveling and
 JV2736.adjusted by the NATIONAL GEODETIC SURVEY
 JV2736.in June 1991.
 JV2736
 JV2736.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2736.GEOID18 height accuracy estimate available here.
 JV2736
 JV2736.Click photographs - Photos may exist for this station.
 JV2736
 JV2736.The dynamic height is computed by dividing the NAVD 88
 JV2736.geopotential number by the normal gravity value computed on the
 JV2736.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2736.degrees latitude (g = 980.6199 gals.).
 JV2736
 JV2736.The modeled gravity was interpolated from observed gravity values.
 JV2736
 JV2736;                    North         East    Units  Estimated Accuracy
 JV2736;SPC MD       -   149,506.6     388,411.9     MT  (+/- 3 meters HH1 GPS) 
 JV2736
 JV2736_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1525620434(NAD 83)
 JV2736
 JV2736                          SUPERSEDED SURVEY CONTROL
 JV2736
 JV2736  NGVD 29 (11/26/84)  112.293  (m)          368.41   (f) ADJUSTED    2 0
 JV2736
 JV2736.Superseded values are not recommended for survey control.
 JV2736
 JV2736.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2736.See file dsdata.pdf to determine how the superseded data were derived.
 JV2736
 JV2736_MARKER: DR = REFERENCE MARK DISK
 JV2736_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2736_STAMPING: FERNWOOD NO 1 1958
 JV2736_MARK LOGO: CGS
 JV2736_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2736+STABILITY: SURFACE MOTION
 JV2736
 JV2736  HISTORY     - Date     Condition        Report By
 JV2736  HISTORY     - 1958     MONUMENTED       CGS
 JV2736
 JV2736                          STATION DESCRIPTION
 JV2736
 JV2736'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2736'4.7 MI NE FROM CABIN JOHN.
 JV2736'ABOUT 2.5 MILES NORTH ALONG THE SEVEN LOCKS ROAD FROM THE FIRE
 JV2736'STATION AT CABIN JOHN, THENCE 1.2 MILES SOUTHEAST ALONG BRADLEY
 JV2736'BOULEVARD, THENCE 0.2 MILE NORTHEAST ALONG BURDETTE ROAD, THENCE
 JV2736'0.3 MILE SOUTHEAST ALONG GREEN TREE ROAD, THENCE 0.5 MILE NORTH
 JV2736'ALONG FERNWOOD ROAD, IN A HEAVILY WOODED AREA, 49.8 FEET SOUTHWEST
 JV2736'OF THE STATION AND SET IN THE TOP OF A CONCRETE POST FLUSH
 JV2736'WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2735 ***********************************************************************
 JV2735  DESIGNATION -  FERNWOOD RM 2
 JV2735  PID         -  JV2735
 JV2735  STATE/COUNTY-  MD/MONTGOMERY
 JV2735  COUNTRY     -  US
 JV2735  USGS QUAD   -  ROCKVILLE (2016)
 JV2735
 JV2735                         *CURRENT SURVEY CONTROL
 JV2735  ______________________________________________________________________
 JV2735* NAD 83(1986) POSITION- 39 00 49.19   (N) 077 08 01.87   (W)   HD_HELD1
 JV2735* NAVD 88 ORTHO HEIGHT -   110.723 (meters)      363.26  (feet) ADJUSTED
 JV2735  ______________________________________________________________________
 JV2735  GEOID HEIGHT    -        -31.793 (meters)                     GEOID18
 JV2735  DYNAMIC HEIGHT  -        110.664 (meters)      363.07  (feet) COMP
 JV2735  MODELED GRAVITY -    980,096.1   (mgal)                       NAVD 88
 JV2735
 JV2735  VERT ORDER      -  SECOND    CLASS 0
 JV2735
 JV2735.The horizontal coordinates were determined by differentially corrected
 JV2735.hand held GPS observations or other comparable positioning techniques
 JV2735.and have an estimated accuracy of +/- 3 meters.
 JV2735
 JV2735.The orthometric height was determined by differential leveling and
 JV2735.adjusted by the NATIONAL GEODETIC SURVEY
 JV2735.in June 1991.
 JV2735
 JV2735.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2735.GEOID18 height accuracy estimate available here.
 JV2735
 JV2735.Click photographs - Photos may exist for this station.
 JV2735
 JV2735.The dynamic height is computed by dividing the NAVD 88
 JV2735.geopotential number by the normal gravity value computed on the
 JV2735.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2735.degrees latitude (g = 980.6199 gals.).
 JV2735
 JV2735.The modeled gravity was interpolated from observed gravity values.
 JV2735
 JV2735;                    North         East    Units  Estimated Accuracy
 JV2735;SPC MD       -   149,531.5     388,407.6     MT  (+/- 3 meters HH1 GPS) 
 JV2735
 JV2735_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1525220459(NAD 83)
 JV2735
 JV2735                          SUPERSEDED SURVEY CONTROL
 JV2735
 JV2735  NGVD 29 (11/26/84)  110.951  (m)          364.01   (f) ADJUSTED    2 0
 JV2735
 JV2735.Superseded values are not recommended for survey control.
 JV2735
 JV2735.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2735.See file dsdata.pdf to determine how the superseded data were derived.
 JV2735
 JV2735_MARKER: DR = REFERENCE MARK DISK
 JV2735_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2735_STAMPING: FERNWOOD NO 2 1958
 JV2735_MARK LOGO: CGS
 JV2735_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2735+STABILITY: SURFACE MOTION
 JV2735
 JV2735  HISTORY     - Date     Condition        Report By
 JV2735  HISTORY     - 1958     MONUMENTED       CGS
 JV2735
 JV2735                          STATION DESCRIPTION
 JV2735
 JV2735'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2735'4.7 MI NE FROM CABIN JOHN.
 JV2735'ABOUT 2.5 MILES NORTH ALONG SEVEN LOCKS ROAD FROM THE FIRE
 JV2735'STATION AT CABIN JOHN, THENCE 1.2 MILES SOUTHEAST ALONG BRADLEY
 JV2735'BOULEVARD, THENCE 0.2 MILE NORTHEAST ALONG BURDETTE ROAD, THENCE
 JV2735'0.3 MILE SOUTHEAST ALONG GREEN TREE ROAD, THENCE 0.5 MILE NORTH
 JV2735'ALONG FERNWOOD ROAD, IN A HEAVILY WOODED AREA, 80.6 FEET NORTHWEST
 JV2735'OF THE STATION AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV2735'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4363 ***********************************************************************
 JV4363  DESIGNATION -  FERNWOOD RM 3
 JV4363  PID         -  JV4363
 JV4363  STATE/COUNTY-  MD/MONTGOMERY
 JV4363  COUNTRY     -  US
 JV4363  USGS QUAD   -  ROCKVILLE (2016)
 JV4363
 JV4363                         *CURRENT SURVEY CONTROL
 JV4363  ______________________________________________________________________
 JV4363* NAD 83(1993) POSITION- 39 00 45.90462(N) 077 08 00.59169(W)   ADJUSTED
 JV4363* NAVD 88 ORTHO HEIGHT -   112.6   (meters)      369.    (feet) VERTCON3
 JV4363  ______________________________________________________________________
 JV4363  GEOID HEIGHT    -        -31.794 (meters)                     GEOID18
 JV4363  LAPLACE CORR    -         -2.19  (seconds)                    DEFLEC18
 JV4363  HORZ ORDER      -  FIRST
 JV4363
 JV4363.The horizontal coordinates were established by classical geodetic methods
 JV4363.and adjusted by the National Geodetic Survey in November 1994.
 JV4363
 JV4363.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4363.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4363
 JV4363.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4363.GEOID18 height accuracy estimate available here.
 JV4363
 JV4363.Click photographs - Photos may exist for this station.
 JV4363
 JV4363.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4363
 JV4363. The following values were computed from the NAD 83(1993) position.
 JV4363
 JV4363;                    North         East     Units Scale Factor Converg.
 JV4363;SPC MD       -   149,430.186   388,438.202   MT  0.99995270   -0 05 01.6
 JV4363;SPC MD       -   490,255.54  1,274,401.00   sFT  0.99995270   -0 05 01.6
 JV4363;UTM  18      - 4,320,357.088   315,280.904   MT  1.00002016   -1 20 36.2
 JV4363
 JV4363!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4363!SPC MD       -   0.99998733  x   0.99995270  =   0.99994003
 JV4363!UTM  18      -   0.99998733  x   1.00002016  =   1.00000749
 JV4363
 JV4363:                Primary Azimuth Mark                     Grid Az
 JV4363:SPC MD       -  PAVILION                                 016 05 29.8
 JV4363:UTM  18      -  PAVILION                                 017 21 04.4
 JV4363
 JV4363_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1528020357(NAD 83)
 JV4363
 JV4363|---------------------------------------------------------------------|
 JV4363| PID    Reference Object                     Distance      Geod. Az  |
 JV4363|                                                           dddmmss.s |
 JV4363| JV2733 FERNWOOD AZ MK                                     0095659.5 |
 JV4363| JV4316 PAVILION                            APPROX. 4.7 KM 0160028.2 |
 JV4363| JV4293 BETHESDA GEORGETOWN PREP BELL       APPROX. 3.1 KM 0420410.0 |
 JV4363| JV4317 BETHESDA CEDAR LANE WSSC SPIPE      APPROX. 2.3 KM 1120502.1 |
 JV4363| HV4103 BETHESDA BRADLEY HILLS S SPIPE      APPROX. 4.0 KM 1543025.4 |
 JV4363| CJ9769 FERNWOOD RM 4                        27.955 METERS 16322     |
 JV4363| JV4345 BETHESDA RAD STA WMAL E TWR         APPROX. 0.6 KM 2955036.4 |
 JV4363| JV4347 POTOMAC RADIO STA WGMS SW MAST      APPROX. 4.0 KM 3060319.8 |
 JV4363| JV4360 BETHESDA CABIN JOHN MICROWAVE       APPROX. 2.2 KM 3303004.2 |
 JV4363| JV2734 FERNWOOD                             85.096 METERS 35051     |
 JV4363|---------------------------------------------------------------------|
 JV4363
 JV4363                          SUPERSEDED SURVEY CONTROL
 JV4363
 JV4363  NAD 83(1991)-  39 00 45.90412(N)    077 08 00.59265(W) AD(       ) 1
 JV4363  NAD 83(1986)-  39 00 45.90395(N)    077 08 00.60244(W) AD(       ) 1
 JV4363  NAD 27      -  39 00 45.50986(N)    077 08 01.67151(W) AD(       ) 1
 JV4363  NGVD 29 (07/19/86)  112.8    (m)          370.     (f) VERT ANG       
 JV4363
 JV4363.Superseded values are not recommended for survey control.
 JV4363
 JV4363.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4363.See file dsdata.pdf to determine how the superseded data were derived.
 JV4363
 JV4363_MARKER: DR = REFERENCE MARK DISK
 JV4363_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4363_STAMPING: FERNWOOD NO 3 1969
 JV4363_MARK LOGO: CGS
 JV4363_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4363+STABILITY: SURFACE MOTION
 JV4363_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4363+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2003
 JV4363
 JV4363  HISTORY     - Date     Condition        Report By
 JV4363  HISTORY     - 1969     MONUMENTED       CGS
 JV4363  HISTORY     - 1978     GOOD             LOCENG
 JV4363  HISTORY     - 20030909 GOOD             URS
 JV4363
 JV4363                          STATION DESCRIPTION
 JV4363
 JV4363'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4363'THE STATION IS ABOUT 5 MILES SOUTH OF ROCKVILLE, 4 MILES EAST OF
 JV4363'POTOMAC AND ABOUT 200 FEET SOUTH OF INTERSTATE HIGHWAY 495, ON THE
 JV4363'WEST RIGHT-OF-WAY OF FERNWOOD ROAD.
 JV4363'
 JV4363'TO REACH THE STATION FROM WHERE DEMOCRACY BOULEVARD CROSSES
 JV4363'INTERSTATE HIGHWAY 270, GO EAST ON DEMOCRACY BOULEVARD FOR 0.45
 JV4363'MILE TO THE JUNCTION WITH FERNWOOD ROAD.  TURN RIGHT AND GO SOUTH
 JV4363'ON FERNWOOD ROAD FOR 0.5 MILE TO THE AZIMUTH MARK ON THE LEFT.
 JV4363'CONTINUE SOUTH ON FERNWOOD ROAD FOR 0.1 MILE TO THE STATION ON THE
 JV4363'RIGHT.
 JV4363'
 JV4363'STATION MARK IS A STANDARD REFERENCE MARK DISK, STAMPED FERNWOOD
 JV4363'NO 3 1969, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 JV4363'DIAMETER, THAT PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 68.0 FEET
 JV4363'WEST OF THE CENTERLINE OF FERNWOOD ROAD, 64.0 FEET SOUTHWEST OF
 JV4363'THE SOUTHWEST CORNER OF A BRIDGE OVER INTERSTATE HIGHWAY 495 AND
 JV4363'15.7 FEET SOUTH OF A RIGHT-OF-WAY FENCE.  THE UNDERGROUND MARK
 JV4363'IS 42 INCHES BELOW THE GROUND SURFACE.
 JV4363'
 JV4363'REFERENCE MARK 4 IS A STANDARD DISK, STAMPED FERNWOOD NO 4 1969, SET
 JV4363'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 JV4363'FLUSH WITH THE GROUND SURFACE.  IT IS 41.0 FEET WEST OF THE
 JV4363'CENTERLINE OF FERNWOOD ROAD, 38.8 FEET NORTH OF THE NORTH END OF A
 JV4363'GUARD RAIL AND ABOUT THE SAME ELEVATION AS THE STATION.
 JV4363'
 JV4363'AZIMUTH MARK IS A STANDARD DISK, STAMPED FERNWOOD 1958, SET IN THE
 JV4363'TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 5 INCHES ABOVE
 JV4363'THE GROUND.  IT IS 44.7 FEET NORTH-NORTHEAST OF A FIRE PLUG, 36.0
 JV4363'FEET EAST OF THE CENTERLINE OF FERNWOOD ROAD AND 34.0 FEET SOUTH OF
 JV4363'THE CENTERLINE OF A PAVED DRIVEWAY.
 JV4363'
 JV4363'FERNWOOD 1958 IS A STANDARD DISK, STAMPED FERNWOOD 1958, SET IN
 JV4363'THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 2 INCHES
 JV4363'ABOVE THE GROUND.  IT IS 114.0 FEET WEST OF THE CENTERLINE OF
 JV4363'FERNWOOD ROAD, 65.0 FEET WEST OF A RIGHT-OF-WAY FENCE CORNER POST,
 JV4363'35.0 FEET NORTH OF THE EDGE OF A CUTBANK AND 8.9 FEET SOUTH OF A
 JV4363'FENCE.
 JV4363'
 JV4363'RESULTS OF A GEODIMETER TRAVERSE.
 JV4363
 JV4363                          STATION RECOVERY (1978)
 JV4363
 JV4363'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1978
 JV4363'THE STATION MARK WAS FOUND IN GOOD CONDITION.  REFERENCE MARK 4 WAS
 JV4363'NOT CHECKED.
 JV4363
 JV4363                          STATION RECOVERY (2003)
 JV4363
 JV4363'RECOVERY NOTE BY URS COMPANY 2003 (RJ)
 JV4363'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1794 ***********************************************************************
 HU1794  DESIGNATION -  FERRY
 HU1794  PID         -  HU1794
 HU1794  STATE/COUNTY-  MD/WICOMICO
 HU1794  COUNTRY     -  US
 HU1794  USGS QUAD   -  EDEN (2016)
 HU1794
 HU1794                         *CURRENT SURVEY CONTROL
 HU1794  ______________________________________________________________________
 HU1794* NAD 83(1991) POSITION- 38 20 25.93480(N) 075 41 44.28663(W)   ADJUSTED
 HU1794* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1794  ______________________________________________________________________
 HU1794  GEOID HEIGHT    -        -35.793 (meters)                     GEOID18
 HU1794  LAPLACE CORR    -         -1.35  (seconds)                    DEFLEC18
 HU1794  HORZ ORDER      -  SECOND
 HU1794
 HU1794.The horizontal coordinates were established by classical geodetic methods
 HU1794.and adjusted by the National Geodetic Survey in January 1992.
 HU1794
 HU1794.The orthometric height was scaled from a topographic map.
 HU1794
 HU1794.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1794.GEOID18 height accuracy estimate available here.
 HU1794
 HU1794.Click photographs - Photos may exist for this station.
 HU1794
 HU1794.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1794
 HU1794. The following values were computed from the NAD 83(1991) position.
 HU1794
 HU1794;                    North         East     Units Scale Factor Converg.
 HU1794;SPC MD       -    75,617.258   514,029.113   MT  0.99999319   +0 49 07.2
 HU1794;SPC MD       -   248,087.62  1,686,443.85   sFT  0.99999319   +0 49 07.2
 HU1794;UTM  18      - 4,243,828.389   439,208.247   MT  0.99964551   -0 25 53.5
 HU1794
 HU1794!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1794!SPC MD       -   1.00000550  x   0.99999319  =   0.99999869
 HU1794!UTM  18      -   1.00000550  x   0.99964551  =   0.99965101
 HU1794
 HU1794:                Primary Azimuth Mark                     Grid Az
 HU1794:SPC MD       -  SILOAM                                   162 49 25.9
 HU1794:UTM  18      -  SILOAM                                   164 04 26.6
 HU1794
 HU1794_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3920843828(NAD 83)
 HU1794
 HU1794|---------------------------------------------------------------------|
 HU1794| PID    Reference Object                     Distance      Geod. Az  |
 HU1794|                                                           dddmmss.s |
 HU1794| DC7294 FERRY RM 1                                         08816     |
 HU1794| HU1795 SILOAM                              APPROX. 1.8 KM 1633833.1 |
 HU1794| DC7295 FERRY RM 2                                         17436     |
 HU1794|---------------------------------------------------------------------|
 HU1794
 HU1794                          SUPERSEDED SURVEY CONTROL
 HU1794
 HU1794  NAD 83(1986)-  38 20 25.92903(N)    075 41 44.31120(W) AD(       ) 2
 HU1794  NAD 27      -  38 20 25.51600(N)    075 41 45.56500(W) AD(       ) 2
 HU1794
 HU1794.Superseded values are not recommended for survey control.
 HU1794
 HU1794.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1794.See file dsdata.pdf to determine how the superseded data were derived.
 HU1794
 HU1794_MARKER: DS = TRIANGULATION STATION DISK
 HU1794_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1794_STAMPING: FERRY 1932
 HU1794_MARK LOGO: CGS
 HU1794_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1794+STABILITY: SURFACE MOTION
 HU1794
 HU1794  HISTORY     - Date     Condition        Report By
 HU1794  HISTORY     - 1932     MONUMENTED       CGS
 HU1794  HISTORY     - 1942     GOOD             CGS
 HU1794
 HU1794                          STATION DESCRIPTION
 HU1794
 HU1794'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1794'STATION IS AT UPPER FERRY ON THE SOUTHEASTERN SHORE OF THE WICOMICO
 HU1794'RIVER, ON MARSH LAND OWNED BY WILLIAM SEITZ.  IT IS ABOUT 80 FEET SE
 HU1794'OF MARSH LINE OF RIVER AND ABOUT 40 FEET W OF ROAD LEADING FROM
 HU1794'FERRY.  THE MARSH IS OVERGROWN BY TALL REEDS IN THE SUMMER.
 HU1794'
 HU1794'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1794'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HU1794'
 HU1794'HEIGHT OF SIGNAL ABOVE STATION MARK - 16.2 METERS.
 HU1794
 HU1794                          STATION RECOVERY (1942)
 HU1794
 HU1794'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1794'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HU1794'ORIGINAL DESCRIPTION--
 HU1794'
 HU1794'(1) 95 FEET INSTEAD OF 80 FEET SE OF MARSH LINE OF RIVER.
 HU1794'
 HU1794'(2) 68.9 FEET INSTEAD OF 40 FEET W OF ROAD.
 HU1794'
 HU1794'THE STATION IS LOCATED AT UPPER FERRY ON THE SE SHORE OF THE
 HU1794'WICOMICO RIVER, 68.9 FEET W OF THE CENTER LINE OF ROAD, 152 FEET
 HU1794'SW OF THE SHORELINE, AT THE W EDGE OF THE FERRY LANDING, 95 FEET SE
 HU1794'OF THE MARSH LINE OF THE RIVER, AND 93 FEET E OF A POWER-LINE POLE
 HU1794'MARKED R.E.A. V 180.
 HU1794'
 HU1794'THE STATION IS A BRONZE DISK, STAMPED FERRY 1932, SET IN A 12-INCH
 HU1794'SQUARE CONCRETE MONUMENT, WHICH IS FLUSH WITH THE GROUND.  THE
 HU1794'STATION IS IN FAIR CONDITION (THE CONCRETE IS BEGINNING TO
 HU1794'DISTINTEGRATE).
 HU1794'
 HU1794'A 1 1/2-HOUR SEARCH WAS MADE IN AN EFFORT TO LOCATE THE REFERENCE
 HU1794'MARKS, BUT NEITHER ONE COULD BE FOUND.  TALL REEDS AND CONSIDERABLE
 HU1794'BRUSH COVER THE ENTIRE AREA OF THE MARSH.  IT IS RECOMMENDED THAT
 HU1794'REFERENCE MARKS NO.1 AND NO.2 BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5819 ***********************************************************************
 HV5819  DESIGNATION -  FERRY
 HV5819  PID         -  HV5819
 HV5819  STATE/COUNTY-  MD/QUEEN ANNES
 HV5819  COUNTRY     -  US
 HV5819  USGS QUAD   -  QUEENSTOWN (2016)
 HV5819
 HV5819                         *CURRENT SURVEY CONTROL
 HV5819  ______________________________________________________________________
 HV5819* NAD 83(1991) POSITION- 38 53 19.33845(N) 076 11 10.98887(W)   ADJUSTED
 HV5819* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5819  ______________________________________________________________________
 HV5819  GEOID HEIGHT    -        -34.150 (meters)                     GEOID18
 HV5819  LAPLACE CORR    -         -4.57  (seconds)                    DEFLEC18
 HV5819  HORZ ORDER      -  THIRD
 HV5819
 HV5819.The horizontal coordinates were established by classical geodetic methods
 HV5819.and adjusted by the National Geodetic Survey in January 1992.
 HV5819
 HV5819.The orthometric height was scaled from a topographic map.
 HV5819
 HV5819.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5819.GEOID18 height accuracy estimate available here.
 HV5819
 HV5819.Click photographs - Photos may exist for this station.
 HV5819
 HV5819.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5819
 HV5819. The following values were computed from the NAD 83(1991) position.
 HV5819
 HV5819;                    North         East     Units Scale Factor Converg.
 HV5819;SPC MD       -   135,966.035   470,586.281   MT  0.99994987   +0 30 38.3
 HV5819;SPC MD       -   446,081.90  1,543,915.16   sFT  0.99994987   +0 30 38.3
 HV5819;UTM  18      - 4,305,095.032   397,106.455   MT  0.99973037   -0 44 41.6
 HV5819
 HV5819!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5819!SPC MD       -   1.00000524  x   0.99994987  =   0.99995511
 HV5819!UTM  18      -   1.00000524  x   0.99973037  =   0.99973560
 HV5819
 HV5819:                Primary Azimuth Mark                     Grid Az
 HV5819:SPC MD       -  OWE                                      066 11 30.5
 HV5819:UTM  18      -  OWE                                      067 26 50.4
 HV5819
 HV5819_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9710605095(NAD 83)
 HV5819
 HV5819|---------------------------------------------------------------------|
 HV5819| PID    Reference Object                     Distance      Geod. Az  |
 HV5819|                                                           dddmmss.s |
 HV5819| HV5766 OWE                                 APPROX. 1.1 KM 0664208.8 |
 HV5819| HV5818 DARCE                               386.090 METERS 17405     |
 HV5819| HV5774 TWIXT                               APPROX. 0.6 KM 1904842.6 |
 HV5819|---------------------------------------------------------------------|
 HV5819
 HV5819                          SUPERSEDED SURVEY CONTROL
 HV5819
 HV5819  NAD 83(1986)-  38 53 19.33389(N)    076 11 11.00192(W) AD(       ) 3
 HV5819  NAD 27      -  38 53 18.90700(N)    076 11 12.18200(W) AD(       ) 3
 HV5819  USSD        -  38 53 19.30100(N)    076 11 11.95700(W) AD(       ) 3
 HV5819
 HV5819.Superseded values are not recommended for survey control.
 HV5819
 HV5819.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5819.See file dsdata.pdf to determine how the superseded data were derived.
 HV5819
 HV5819_MARKER: Z = SEE DESCRIPTION
 HV5819_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5819_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5819+STABILITY: SURFACE MOTION
 HV5819
 HV5819  HISTORY     - Date     Condition        Report By
 HV5819  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5819  HISTORY     - 1940     SEE DESCRIPTION  CGS
 HV5819
 HV5819                          STATION DESCRIPTION
 HV5819
 HV5819'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5819'STATION IS ON THE WESTERN SHORE OF THE BRANCH OF WYE RIVER
 HV5819'BOUNDING WYE ISLAND ON THE W, ON DRUM POINT, ABOUT 3/8 MILE W OF
 HV5819'CEDAR POINT, IN A PASTURE WITH PALING FENCE ON NW AND WSW SIDES,
 HV5819'ABOUT 4 FEET ABOVE HIGH WATER, 6 YARDS NW OF SHORE, 10 YARDS W OF
 HV5819'SHORE, 20 YARDS NE BY E OF FENCE AT COUNTY ROAD, AND 40 YARDS SE
 HV5819'OF FENCE NEAR SMALL HOUSE.  STATION IS MARKED BY A HOLE IN THE
 HV5819'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5819'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5819'PROJECTING ABOUT 8 INCHES ABOVE SURFACE OF GROUND.  THE LETTERS
 HV5819'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 HV5819'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 HV5819'INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS OF
 HV5819'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--PEAK BETWEEN 2
 HV5819'CHIMNEYS OF HOUSE, 1 1/2 MILES, S 24 DEG 43 MIN W.  NAIL IN BLAZE
 HV5819'IN 5-INCH LOCUST TREE, 26.92 METERS (88.3 FEET), S 58 DEG 0 MIN W.
 HV5819'NAIL IN BLAZE IN 7-INCH HACKBERRY TREE, 35.04 METERS (115.0 FEET)
 HV5819'S 89 DEG 29 MIN W.  NAIL IN BLAZE IN 9-INCH HACKBERRY TREE, 34.93
 HV5819'METERS (114.6 FEET), N 51 DEG 9 MIN W.  LEFT CORNER OF LARGE BRICK
 HV5819'HOUSE, 1/4 MILE, N 12 DEG 2 MIN W.  NEAR PEAK OF HOUSE 5/8 MILE,
 HV5819'N 64 DEG 9 MIN E.  NEAR PEAK OF HOUSE, 1-1/4 MILES, N 71 DEG 50
 HV5819'MIN E. NEAR PEAK OF HOUSE, 1-3/8 MILES, N 86 DEG 7 MIN E.  CUPOLA
 HV5819'OF BUILDING, 1 MILE, S 52 DEG 21 MIN E.  NEAR PEAK OF HOUSE, 3/8
 HV5819'MILE, 352 DEG 11.
 HV5819
 HV5819                          STATION RECOVERY (1940)
 HV5819
 HV5819'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5819'CONCRETE MONUMENT FOUND WASHED OUT.  SUBSURFACE MARK NOT DUG FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5874 ***********************************************************************
 HV5874  DESIGNATION -  FERRY
 HV5874  PID         -  HV5874
 HV5874  STATE/COUNTY-  MD/DORCHESTER
 HV5874  COUNTRY     -  US
 HV5874  USGS QUAD   -  CAMBRIDGE (2016)
 HV5874
 HV5874                         *CURRENT SURVEY CONTROL
 HV5874  ______________________________________________________________________
 HV5874* NAD 83(1991) POSITION- 38 34 01.07741(N) 076 01 30.57017(W)   ADJUSTED
 HV5874* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5874  ______________________________________________________________________
 HV5874  GEOID HEIGHT    -        -35.127 (meters)                     GEOID18
 HV5874  LAPLACE CORR    -         -3.06  (seconds)                    DEFLEC18
 HV5874  HORZ ORDER      -  THIRD
 HV5874
 HV5874.The horizontal coordinates were established by classical geodetic methods
 HV5874.and adjusted by the National Geodetic Survey in January 1992.
 HV5874
 HV5874.The orthometric height was scaled from a topographic map.
 HV5874
 HV5874.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5874.GEOID18 height accuracy estimate available here.
 HV5874
 HV5874.Click photographs - Photos may exist for this station.
 HV5874
 HV5874.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5874
 HV5874. The following values were computed from the NAD 83(1991) position.
 HV5874
 HV5874;                    North         East     Units Scale Factor Converg.
 HV5874;SPC MD       -   100,390.353   484,954.691   MT  0.99996429   +0 36 42.6
 HV5874;SPC MD       -   329,364.02  1,591,055.52   sFT  0.99996429   +0 36 42.6
 HV5874;UTM  18      - 4,269,222.254   410,690.123   MT  0.99969822   -0 38 21.0
 HV5874
 HV5874!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5874!SPC MD       -   1.00000539  x   0.99996429  =   0.99996968
 HV5874!UTM  18      -   1.00000539  x   0.99969822  =   0.99970361
 HV5874
 HV5874:                Primary Azimuth Mark                     Grid Az
 HV5874:SPC MD       -  REAR                                     345 55 33.0
 HV5874:UTM  18      -  REAR                                     347 10 36.6
 HV5874
 HV5874_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1069069222(NAD 83)
 HV5874
 HV5874|---------------------------------------------------------------------|
 HV5874| PID    Reference Object                     Distance      Geod. Az  |
 HV5874|                                                           dddmmss.s |
 HV5874| HV5867 REAR                                APPROX. 1.4 KM 3463215.6 |
 HV5874|---------------------------------------------------------------------|
 HV5874
 HV5874                          SUPERSEDED SURVEY CONTROL
 HV5874
 HV5874  NAD 83(1986)-  38 34 01.07446(N)    076 01 30.58787(W) AD(       ) 3
 HV5874  NAD 27      -  38 34 00.62400(N)    076 01 31.80700(W) AD(       ) 3
 HV5874  USSD        -  38 34 01.02500(N)    076 01 31.60900(W) AD(       ) 3
 HV5874
 HV5874.Superseded values are not recommended for survey control.
 HV5874
 HV5874.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5874.See file dsdata.pdf to determine how the superseded data were derived.
 HV5874
 HV5874
 HV5874  HISTORY     - Date     Condition        Report By
 HV5874  HISTORY     - 1900     MONUMENTED       MDSFC
 HV5874  HISTORY     - 1910     GOOD             CGS
 HV5874  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV5874  HISTORY     - 1941     MARK NOT FOUND   CGS
 HV5874
 HV5874                          STATION DESCRIPTION
 HV5874
 HV5874'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV5874'ON THE SOUTHERN SHORE OF CHOPTANK RIVER, NEAR E SIDE OF ENTRANCE
 HV5874'TO HURST CREEK, AND ABOUT 2-1/2 MILES E OF CAMBRIDGE.  STATION IS
 HV5874'ON SAND BEACH, ABOUT ON LEVEL WITH HIGH WATER, 92 YARDS ENE OF
 HV5874'HURST CREEK, 1 YARD SE OF SHORE, AND 6 TO 10 YARDS NW TO N OF
 HV5874'SEVERAL LOW CEDAR TREES.  STATION MARKED BY NAIL IN PINE STUB IN
 HV5874'CENTER OF 2-INCH TILE PIPE, TOP OF PIPE BEING 6 INCHES BELOW
 HV5874'SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE
 HV5874'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5874'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5874'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5874'COUNTER-SUNK IN TOP OF POST.  IT IS 16.74 METERS (54.9 FEET) FROM
 HV5874'THE STATION, S 51 DEG 12 MIN E. DISTANCES AND BEARINGS FROM THE
 HV5874'STATION TO OTHER POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN
 HV5874'BLAZE IS 16-INCH CEDAR TREE, 9.76 METERS (32.02 FEET), S 18 DEG 28
 HV5874'MIN W.  CHIMNEY OF HOUSE, 1 3/4 MILES, S 76 DEG 49 MIN W.  NEAR
 HV5874'PEAK OF LARGE HOUSE WITH CUPOLA, 1 MILE, N 1 DEG 44 MIN W.  NEAR
 HV5874'PEAK OF BARN CUPOLA 2 MILES, N 18 DEG 1 MIN E.  NEAR PEAK OF
 HV5874'JAMAICA POINT WHARF HOUSE, 3-5/8 MILES, N 35 DEG 2 MIN E.  NAIL IN
 HV5874'BLAZE IN 11-INCH CEDAR TREE, 6.82 METERS (22.38 FEET), S 68 DEG 14
 HV5874'MIN E.  NAIL IN BLAZE IN 8-INCH CEDAR TREE, 8.32 METERS (27.30
 HV5874'FEET), S 18 DEG 38 MIN E.
 HV5874
 HV5874                          STATION RECOVERY (1930)
 HV5874
 HV5874'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV5874'NO TRACE.  WASHED BADLY.
 HV5874
 HV5874                          STATION RECOVERY (1941)
 HV5874
 HV5874'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HV5874'STATION SEARCHED FOR BUT NOT FOUND.  THIS POINT HAS SANDED
 HV5874'CONSIDERABLY, AND THE MOUTH OF THE CREEK HAS SHIFTED SO THAT
 HV5874'DESCRIPTION IS OF NO VALUE.
 HV5874'
 HV5874'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7159 ***********************************************************************
 HV7159  DESIGNATION -  FERRY
 HV7159  PID         -  HV7159
 HV7159  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7159  COUNTRY     -  US
 HV7159  USGS QUAD   -  SOUTH RIVER (2016)
 HV7159
 HV7159                         *CURRENT SURVEY CONTROL
 HV7159  ______________________________________________________________________
 HV7159* NAD 83(1991) POSITION- 38 56 45.30197(N) 076 31 56.19233(W)   ADJUSTED
 HV7159* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV7159  ______________________________________________________________________
 HV7159  GEOID HEIGHT    -        -33.305 (meters)                     GEOID18
 HV7159  LAPLACE CORR    -         -4.19  (seconds)                    DEFLEC18
 HV7159  HORZ ORDER      -  SECOND
 HV7159
 HV7159.The horizontal coordinates were established by classical geodetic methods
 HV7159.and adjusted by the National Geodetic Survey in January 1992.
 HV7159
 HV7159.The orthometric height was scaled from a topographic map.
 HV7159
 HV7159.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7159.GEOID18 height accuracy estimate available here.
 HV7159
 HV7159.Click photographs - Photos may exist for this station.
 HV7159
 HV7159.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7159
 HV7159. The following values were computed from the NAD 83(1991) position.
 HV7159
 HV7159;                    North         East     Units Scale Factor Converg.
 HV7159;SPC MD       -   142,106.372   440,545.925   MT  0.99995059   +0 17 36.8
 HV7159;SPC MD       -   466,227.32  1,445,357.76   sFT  0.99995059   +0 17 36.8
 HV7159;UTM  18      - 4,311,891.237   367,213.259   MT  0.99981712   -0 57 47.9
 HV7159
 HV7159!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7159!SPC MD       -   1.00000432  x   0.99995059  =   0.99995491
 HV7159!UTM  18      -   1.00000432  x   0.99981712  =   0.99982144
 HV7159
 HV7159:                Primary Azimuth Mark                     Grid Az
 HV7159:SPC MD       -  ALMSHOUSE RESET                          221 43 20.6
 HV7159:UTM  18      -  ALMSHOUSE RESET                          222 58 45.3
 HV7159
 HV7159_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6721311891(NAD 83)
 HV7159
 HV7159|---------------------------------------------------------------------|
 HV7159| PID    Reference Object                     Distance      Geod. Az  |
 HV7159|                                                           dddmmss.s |
 HV7159| CX2755 FERRY RM 1                           15.758 METERS 04508     |
 HV7159| HV7160 FERRY POINT FLAGPOLE                 36.561 METERS 15624     |
 HV7159| CX2756 FERRY RM 2                           36.408 METERS 15625     |
 HV7159| HV7158 GLEBE CREEK RED ROOF HSE E CHY      APPROX. 1.1 KM 1972453.3 |
 HV7159| HV7155 FLEET HOUSE NORTH GABLE             APPROX. 0.8 KM 2123840.4 |
 HV7159| HV7113 ALMSHOUSE RESET                     APPROX. 0.7 KM 2220057.4 |
 HV7159| HV7154 WILMER ESTATE WINDMILL              APPROX. 1.1 KM 2585659.5 |
 HV7159| CX2757 FERRY RM 3 AZIMUTH                                 2875414.6 |
 HV7159| HV7156 CRAB CREEK YELLOW HSE MID CHIM      APPROX. 0.8 KM 3302945.7 |
 HV7159|---------------------------------------------------------------------|
 HV7159
 HV7159                          SUPERSEDED SURVEY CONTROL
 HV7159
 HV7159  NAD 83(1986)-  38 56 45.29845(N)    076 31 56.20345(W) AD(       ) 2
 HV7159  NAD 27      -  38 56 44.89407(N)    076 31 57.34112(W) AD(       ) 2
 HV7159
 HV7159.Superseded values are not recommended for survey control.
 HV7159
 HV7159.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7159.See file dsdata.pdf to determine how the superseded data were derived.
 HV7159
 HV7159_MARKER: DS = TRIANGULATION STATION DISK
 HV7159_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7159_STAMPING: FERRY 1933
 HV7159_MARK LOGO: CGS
 HV7159
 HV7159  HISTORY     - Date     Condition        Report By
 HV7159  HISTORY     - 1933     MONUMENTED       CGS
 HV7159  HISTORY     - 1933     GOOD             CGS
 HV7159  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV7159  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7159
 HV7159                          STATION DESCRIPTION
 HV7159
 HV7159'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7159'ON THE NE SIDE OF SOUTH RIVER ABOUT 4 MILES ABOVE THE MOUTH, ON
 HV7159'FERRY POINT, ON LAND OWNED BY MR. JOSEPH SIEMIK.  STATION IS
 HV7159'ABOUT 15 FEET FROM HIGH WATER, ABOUT 20 FEET W OF END OF
 HV7159'BREAKWATER SURROUNDING WATER FRONT OF DR. DAVIS, 85 FEET FROM THE
 HV7159'SW CORNER OF DR. DAVIS HOME, ABOUT 160 FEET FROM MR. SIEMEKS
 HV7159'BATHHOUSE AT THE END OF WHARF.  STATION IS AT THE LINE BETWEEN
 HV7159'PROPERTIES OF DR. DAVIS AND MR. SIEMEK.
 HV7159'
 HV7159'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7159'CONCRETE AS DESCRIBED.
 HV7159
 HV7159                          STATION RECOVERY (1933)
 HV7159
 HV7159'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (RDH)
 HV7159'STATION AND TWO REFERENCE MARKS WERE FOUND IN GOOD CONDITION AND
 HV7159'AN AZIMUTH MARK WAS ESTABLISHED.
 HV7159'
 HV7159'THE STATION MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE AS
 HV7159'DESCRIBED.  THE SURFACE MARK IS FLUSH WITH THE GROUND IN A SLIGHT
 HV7159'DEPRESSION ON FERRY POINT ON THE N SHORE OF THE SOUTH RIVER, ABOUT
 HV7159'3 MILES SW OF ANNAPOLIS AND 1 MILE SE OF THE RIVERVIEW BRIDGE. IT
 HV7159'IS 3 YARDS E OF HIGH WATER, 48 YARDS S OF A BATHHOUSE AND PIER, 48
 HV7159'YARDS NW OF AN ARTIFICIAL POOL, 40 YARDS NW OF THE TALLER OF TWO
 HV7159'CEDAR TREES, AND 119.95 FEET FROM THE CENTER OF A FLAGPOLE. THE
 HV7159'DIRECTION TO THIS POLE AND OTHER OBJECTS VISIBLE FROM THE GROUND
 HV7159'AT THE STATION IS GIVEN BELOW.
 HV7159'
 HV7159'REFERENCE MARK NO. 1 IS MARKED, AS DESCRIBED, BY A STANDARD BRONZE
 HV7159'DISK SET IN CONCRETE, FLUSH WITH THE GROUND, AND ALSO IN THE
 HV7159'DEPRESSION.
 HV7159'
 HV7159'REFERENCE MARK NO. 2 IS A STANDARD COPPER DISK SET IN THE CONCRETE
 HV7159'BASE OF THE FLAGPOLE, 5 INCHES NE OF THE FLAGPOLE, 3 YARDS NE OF
 HV7159'HIGH WATER, 10 YARDS SW OF A 10-INCH TREE, AND 19 YARDS W OF THE W
 HV7159'END OF THE ARTIFICIAL POOL.
 HV7159'
 HV7159'REFERENCE MARK NO. 3 IS A STANDARD COPPER DISK SET IN THE CONCRETE
 HV7159'RIVERVIEW BRIDGE, ON THE E COPING DIRECTLY UNDER THE GUARDRAIL, 3
 HV7159'FEET N OF THE N END OF THE DRAW SECTION.
 HV7159'
 HV7159'ALMSHOUSE, 1933, IS A STANDARD COAST SURVEY MARK SET IN CONCRETE
 HV7159'AS DESCRIBED.  IT WAS ESTABLISHED BY J.A. BOND, AND IS LOCATED
 HV7159'DIRECTLY ACROSS THE RIVER FROM FERRY ON THE S SHORE OF THE SOUTH
 HV7159'RIVER, ABOUT 200 YARDS SE OF THE COUNTY ALMSHOUSE, IN A WIRE FENCE
 HV7159'LINE, NEAR THE WATER.  THE RED LIGHT LISTED BELOW IS THE LOWER OF
 HV7159'THE TWO MOST SOUTHERLY OF THE RED LIGHTS ON THE BRIDGE.  IT IS
 HV7159'LOCATED ON THE CONCRETE PIER THAT STANDS AT THE S END OF THE DRAWSPAN.
 HV7159'
 HV7159'THE STATION MAY BE REACHED FROM ANNAPOLIS BY GOING W ON WEST
 HV7159'STREET, OR ROUTE 50, TO WHERE ROUTE 50 MAKES A SLIGHT RIGHT TURN
 HV7159'AND ANOTHER STREET CONTINUE STRAIGHT AHEAD.  FOLLOW THIS STREET
 HV7159'(UNKNOWN), WHICH BECOMES A PAVED ROAD, THEN GRAVEL, KEEPING MAIN
 HV7159'ROAD TO THE RIVER AND THE STATION.
 HV7159
 HV7159                          STATION RECOVERY (1943)
 HV7159
 HV7159'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7159'A TWO-MAN PARTY MADE A THOROUGH SEARCH FOR THE STATION.  REFERENCE
 HV7159'MARK 2 WAS RECOVERED AS DESCRIBED, BUT NEITHER THE STATION MARK
 HV7159'NOR REFERENCE MARK 1 COULD BE FOUND.  A DRAINAGE DITCH RUNS
 HV7159'APPROXIMATELY THROUGH THE LOCATION OF THESE STATIONS AND IT IS
 HV7159'POSSIBLE THAT THEY WERE COVERED OR DESTROYED DURING THE
 HV7159'CONSTRUCTION OF THIS DITCH.  THE AZIMUTH MARK WAS NOT SEARCHED
 HV7159'FOR. IT IS RECOMMENDED THAT FERRY 1933 AND ITS REFERENCE MARK 1 BE
 HV7159'CLASSIFIED AS LOST.
 HV7159
 HV7159                          STATION RECOVERY (1960)
 HV7159
 HV7159'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7159'STATION WAS PREVIOUSLY LISTED AS DESTROYED BUT R.M. 2 WAS FOUND AS
 HV7159'DESCRIBED.  NO OTHER MARKS WERE FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5793 ***********************************************************************
 JV5793  DESIGNATION -  FERRY
 JV5793  PID         -  JV5793
 JV5793  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5793  COUNTRY     -  US
 JV5793  USGS QUAD   -  ROUND BAY (2016)
 JV5793
 JV5793                         *CURRENT SURVEY CONTROL
 JV5793  ______________________________________________________________________
 JV5793* NAD 83(1991) POSITION- 39 04 19.35448(N) 076 30 07.70408(W)   ADJUSTED
 JV5793* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5793  ______________________________________________________________________
 JV5793  GEOID HEIGHT    -        -33.185 (meters)                     GEOID18
 JV5793  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 JV5793  HORZ ORDER      -  THIRD
 JV5793
 JV5793.The horizontal coordinates were established by classical geodetic methods
 JV5793.and adjusted by the National Geodetic Survey in January 1992.
 JV5793
 JV5793.The orthometric height was scaled from a topographic map.
 JV5793
 JV5793.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5793.GEOID18 height accuracy estimate available here.
 JV5793
 JV5793.Click photographs - Photos may exist for this station.
 JV5793
 JV5793.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5793
 JV5793. The following values were computed from the NAD 83(1991) position.
 JV5793
 JV5793;                    North         East     Units Scale Factor Converg.
 JV5793;SPC MD       -   156,121.245   443,081.928   MT  0.99995570   +0 18 44.9
 JV5793;SPC MD       -   512,207.78  1,453,677.96   sFT  0.99995570   +0 18 44.9
 JV5793;UTM  18      - 4,325,845.090   370,055.976   MT  0.99980792   -0 56 48.9
 JV5793
 JV5793!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5793!SPC MD       -   1.00000509  x   0.99995570  =   0.99996079
 JV5793!UTM  18      -   1.00000509  x   0.99980792  =   0.99981301
 JV5793
 JV5793:                Primary Azimuth Mark                     Grid Az
 JV5793:SPC MD       -  IRON 2                                   069 54 02.0
 JV5793:UTM  18      -  IRON 2                                   071 09 35.8
 JV5793
 JV5793_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7005525845(NAD 83)
 JV5793
 JV5793|---------------------------------------------------------------------|
 JV5793| PID    Reference Object                     Distance      Geod. Az  |
 JV5793|                                                           dddmmss.s |
 JV5793| JV5175 IRON 2                              APPROX. 2.4 KM 0701246.9 |
 JV5793| CA9412 FERRY RM                              5.080 METERS 20416     |
 JV5793|---------------------------------------------------------------------|
 JV5793
 JV5793                          SUPERSEDED SURVEY CONTROL
 JV5793
 JV5793  NAD 83(1986)-  39 04 19.35064(N)    076 30 07.71462(W) AD(       ) 3
 JV5793  NAD 27      -  39 04 18.94100(N)    076 30 08.79700(W) AD(       ) 3
 JV5793  USSD        -  39 04 19.30100(N)    076 30 08.67500(W) AD(       ) 3
 JV5793
 JV5793.Superseded values are not recommended for survey control.
 JV5793
 JV5793.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5793.See file dsdata.pdf to determine how the superseded data were derived.
 JV5793
 JV5793
 JV5793  HISTORY     - Date     Condition        Report By
 JV5793  HISTORY     - 1898     MONUMENTED       CGS
 JV5793  HISTORY     - 1906     GOOD             CGS
 JV5793  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5793
 JV5793                          STATION DESCRIPTION
 JV5793
 JV5793'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5793'ON THE S SHORE OF MAGOTHY RIVER, ON FERRY POINT, ABOUT 1/2 MILE
 JV5793'E OF MOUTH OF DIVIDING CREEK, 15 FEET BACK FROM AND 3 FEET ABOVE
 JV5793'HIGH-WATER MARK.  THERE ARE 5 CEDAR TREES IN CLOSE PROXIMITY
 JV5793'TO THE STATION.  STATION MARKED BY NAIL IN CEMENT IN TILE PIPE
 JV5793'BURIED 1 FOOT BELOW SURFACE OF GROUND.  REFERENCE MARK IS MARKED
 JV5793'BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 JV5793'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 JV5793'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5793'M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK IN TOP OF POST.  IT IS 5.08
 JV5793'METERS (16.67 FEET) FROM THE STATION S 24 DEG 15 MIN W.
 JV5793'OTHER DISTANCES AND BEARINGS FROM THE STATION OF POINTS OF
 JV5793'REFERENCE ARE AS FOLLOWS--TOP OF WHITE HOUSE, 1/2 MILE, S 41
 JV5793'DEG 32 MIN W.  NAIL IN BLAZE IN 8-INCH TREE, 6.43 METERS (21.10
 JV5793'FEET).  HOUSE ON DOBBINS ISLAND, 2-1/4 MILES, N 79 DEG 40 MIN E.
 JV5793'NAIL IN BLAZE IN 4-INCH FORKED TREE, 9.74 METERS (31.96
 JV5793'FEET), S 44 DEG 16 MIN E.  NAIL IN BLAZE IN 6-INCH TREE, 22.70
 JV5793'METERS (74.5 FEET), S 15 DEG 04 MIN E.
 JV5793
 JV5793                          STATION RECOVERY (1933)
 JV5793
 JV5793'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5793'STATION WAS LOCATED ON SOUTH FERRY POINT, NOW KNOWN AS MAGO
 JV5793'VISTA, OPERATED BY ROBERT C. BENSON, WHO HAS BEEN IN THIS VICINITY
 JV5793'SINCE 1916.  A PAVILION NOW OCCUPIES THE POINT.  A HOTEL, WHICH
 JV5793'BURNED THIS YEAR, SEVERAL BATHHOUSES, CONCRETE WALKS,
 JV5793'PLAYGROUND APPARATUS, ETC., COVER THE ENTIRE POINT.  THERE ARE
 JV5793'SEVERAL CEDAR TREES ABOUT 100 FEET BACK FROM THE POINT BUT NO
 JV5793'BLAZES COULD BE FOUND.  THERE WERE CEDAR TREES WHERE THE
 JV5793'BUILDINGS NOW STAND.  NO TRACE OF EITHER STATION, A NAIL IN A
 JV5793'TILE BURIED 1 FOOT BELOW THE SURFACE OF THE GROUND, OR THE
 JV5793'MARYLAND SHELL FISH SURVEY MONUMENT COULD BE FOUND.  THEY
 JV5793'HAVE EITHER BEEN DESTROYED OR COVERED OVER DURING THE
 JV5793'DEVELOPMENT OF THIS PROPERTY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5571 ***********************************************************************
 JV5571  DESIGNATION -  FERRY BAR USE 1916
 JV5571  PID         -  JV5571
 JV5571  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5571  COUNTRY     -  US
 JV5571  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5571
 JV5571                         *CURRENT SURVEY CONTROL
 JV5571  ______________________________________________________________________
 JV5571* NAD 83(1991) POSITION- 39 15 26.04976(N) 076 36 36.19080(W)   ADJUSTED
 JV5571* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5571  ______________________________________________________________________
 JV5571  GEOID HEIGHT    -        -32.786 (meters)                     GEOID18
 JV5571  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 JV5571  HORZ ORDER      -  THIRD
 JV5571
 JV5571.The horizontal coordinates were established by classical geodetic methods
 JV5571.and adjusted by the National Geodetic Survey in January 1992.
 JV5571
 JV5571.The orthometric height was scaled from a topographic map.
 JV5571
 JV5571.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5571.GEOID18 height accuracy estimate available here.
 JV5571
 JV5571.Click photographs - Photos may exist for this station.
 JV5571
 JV5571.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5571
 JV5571. The following values were computed from the NAD 83(1991) position.
 JV5571
 JV5571;                    North         East     Units Scale Factor Converg.
 JV5571;SPC MD       -   176,634.774   433,656.007   MT  0.99997196   +0 14 41.1
 JV5571;SPC MD       -   579,509.25  1,422,753.08   sFT  0.99997196   +0 14 41.1
 JV5571;UTM  18      - 4,346,558.262   361,085.227   MT  0.99983760   -1 01 08.4
 JV5571
 JV5571!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5571!SPC MD       -   1.00000471  x   0.99997196  =   0.99997667
 JV5571!UTM  18      -   1.00000471  x   0.99983760  =   0.99984231
 JV5571
 JV5571:                Primary Azimuth Mark                     Grid Az
 JV5571:SPC MD       -  FORT                                     079 53 39.8
 JV5571:UTM  18      -  FORT                                     081 09 29.3
 JV5571
 JV5571_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6108546558(NAD 83)
 JV5571
 JV5571|---------------------------------------------------------------------|
 JV5571| PID    Reference Object                     Distance      Geod. Az  |
 JV5571|                                                           dddmmss.s |
 JV5571| JV5532 FORT                                APPROX. 2.7 KM 0800820.9 |
 JV5571| JV5593 MARYLAND YACHT CLUB FLAGPOLE        APPROX. 0.5 KM 2384908.9 |
 JV5571| JV5594 FERRY BAR CHANNEL REAR RNG LT       APPROX. 0.5 KM 2434802.2 |
 JV5571|---------------------------------------------------------------------|
 JV5571
 JV5571                          SUPERSEDED SURVEY CONTROL
 JV5571
 JV5571  NAD 83(1986)-  39 15 26.04621(N)    076 36 36.19978(W) AD(       ) 3
 JV5571  NAD 27      -  39 15 25.66400(N)    076 36 37.31500(W) AD(       ) 3
 JV5571  USSD        -  39 15 26.02700(N)    076 36 37.15400(W) AD(       ) 3
 JV5571
 JV5571.Superseded values are not recommended for survey control.
 JV5571
 JV5571.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5571.See file dsdata.pdf to determine how the superseded data were derived.
 JV5571
 JV5571
 JV5571  HISTORY     - Date     Condition        Report By
 JV5571  HISTORY     - 1916     MONUMENTED       CGS
 JV5571  HISTORY     - 1924     GOOD             CGS
 JV5571  HISTORY     - 1934     GOOD             CGS
 JV5571
 JV5571                          STATION DESCRIPTION
 JV5571
 JV5571'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5571'STATION IS N OF THE PATAPSCO RIVER, ON THE EASTERLY CURVED CURB
 JV5571'OF LIGHT STREET, 0.954 METER (3.13 FEET) NW FROM A WATER PLUG,
 JV5571'AND 10.36 METERS (34.0 FEET) N FROM THE LINE OF THE S FACE OF
 JV5571'THE N CURB OF A STREET LEADING TO THE BOAT CLUB.  THE STATION IS
 JV5571'MARKED BY A U.S.E. BRONZE MARKER SET IN THE CONCRETE CURB.
 JV5571
 JV5571                          STATION RECOVERY (1934)
 JV5571
 JV5571'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5571'STATION FOUND AS DESCRIBED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5205 ***********************************************************************
 JV5205  DESIGNATION -  FIELD
 JV5205  PID         -  JV5205
 JV5205  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5205  COUNTRY     -  US
 JV5205  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5205
 JV5205                         *CURRENT SURVEY CONTROL
 JV5205  ______________________________________________________________________
 JV5205* NAD 83(1991) POSITION- 39 05 34.92673(N) 076 26 24.43740(W)   ADJUSTED
 JV5205* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5205  ______________________________________________________________________
 JV5205  GEOID HEIGHT    -        -33.240 (meters)                     GEOID18
 JV5205  LAPLACE CORR    -         -2.31  (seconds)                    DEFLEC18
 JV5205  HORZ ORDER      -  THIRD
 JV5205
 JV5205.The horizontal coordinates were established by classical geodetic methods
 JV5205.and adjusted by the National Geodetic Survey in January 1992.
 JV5205
 JV5205.The orthometric height was scaled from a topographic map.
 JV5205
 JV5205.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5205.GEOID18 height accuracy estimate available here.
 JV5205
 JV5205.Click photographs - Photos may exist for this station.
 JV5205
 JV5205.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5205
 JV5205. The following values were computed from the NAD 83(1991) position.
 JV5205
 JV5205;                    North         East     Units Scale Factor Converg.
 JV5205;SPC MD       -   158,482.693   448,434.297   MT  0.99995701   +0 21 05.0
 JV5205;SPC MD       -   519,955.30  1,471,238.19   sFT  0.99995701   +0 21 05.0
 JV5205;UTM  18      - 4,328,087.966   375,458.111   MT  0.99979099   -0 54 29.6
 JV5205
 JV5205!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5205!SPC MD       -   1.00000510  x   0.99995701  =   0.99996211
 JV5205!UTM  18      -   1.00000510  x   0.99979099  =   0.99979609
 JV5205
 JV5205:                Primary Azimuth Mark                     Grid Az
 JV5205:SPC MD       -  TAR                                      290 22 56.7
 JV5205:UTM  18      -  TAR                                      291 38 31.3
 JV5205
 JV5205_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7545828087(NAD 83)
 JV5205
 JV5205|---------------------------------------------------------------------|
 JV5205| PID    Reference Object                     Distance      Geod. Az  |
 JV5205|                                                           dddmmss.s |
 JV5205| JV5219 TAR                                 APPROX. 0.9 KM 2904401.7 |
 JV5205| CA9413 FIELD RM                             29.930 METERS 35637     |
 JV5205|---------------------------------------------------------------------|
 JV5205
 JV5205                          SUPERSEDED SURVEY CONTROL
 JV5205
 JV5205  NAD 83(1986)-  39 05 34.92238(N)    076 26 24.44805(W) AD(       ) 3
 JV5205  NAD 27      -  39 05 34.52500(N)    076 26 25.58900(W) AD(       ) 3
 JV5205
 JV5205.Superseded values are not recommended for survey control.
 JV5205
 JV5205.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5205.See file dsdata.pdf to determine how the superseded data were derived.
 JV5205
 JV5205_MARKER: DD = SURVEY DISK
 JV5205_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5205
 JV5205  HISTORY     - Date     Condition        Report By
 JV5205  HISTORY     - 1933     MONUMENTED       WSSC
 JV5205  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5205
 JV5205                          STATION DESCRIPTION
 JV5205
 JV5205'DESCRIBED BY WASH SUBURB SAN COMM 1933 (JAB)
 JV5205'ON LONG POINT, TAR COVE, SILLERY BAY, IN SIDE YARD OF WALTER
 JV5205'HASSLINGER PROPERTY, 82.15 FEET FROM A SHARP ANGLE IN THE SEA
 JV5205'WALL, 66.0 FEET FROM THE SEA WALL ON THE E, 66.7 FEET FROM THE SEA
 JV5205'WALL ON THE W.  STATION IS ON THE POINT BETWEEN CORNFIELD CREEK
 JV5205'AND TAR COVE ON A LAWN USED AS A PARK, CEMENT BLOCK PILLAR CHAIN
 JV5205'FENCE SURROUNDS THE POINT.
 JV5205'
 JV5205'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5205'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5205'
 JV5205'STATION AND REFERENCE MARKS ARE SET FLUSH WITH THE SURFACE OF THE
 JV5205'GROUND.  REFERENCE MARK IS 110 FEET FROM A 24-INCH RED OAK TREE.
 JV5205'RED OAK TREE, STATION AND REFERENCE MARKS ARE IN RANGE.
 JV5205'
 JV5205'DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 JV5205'REFERENCES ARE AS FOLLOWS--SE TANGENT DOBBINS ISLAND, 1-1/2
 JV5205'MILES, N 51 DEG E.  SE TANGENT LITTLE ISLAND, 1-1/4 MILES,
 JV5205'N 68 DEG E.  SW TANGENT GIBSON ISLAND, 1/2 MILE, N 38 DEG E.
 JV5205
 JV5205                          STATION RECOVERY (1961)
 JV5205
 JV5205'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5205'STATION AND R.M. COULD NOT BE FOUND.  THE ENTIRE AREA HAS BEEN
 JV5205'FILLED IN WITH ABOUT 4 FT. OF DIRT DURING LAST TEN YEARS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6052 ***********************************************************************
 JV6052  DESIGNATION -  FIELD
 JV6052  PID         -  JV6052
 JV6052  STATE/COUNTY-  MD/HOWARD
 JV6052  COUNTRY     -  US
 JV6052  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6052
 JV6052                         *CURRENT SURVEY CONTROL
 JV6052  ______________________________________________________________________
 JV6052* NAD 83(1991) POSITION- 39 18 13.25050(N) 076 47 54.37245(W)   ADJUSTED
 JV6052* NAVD 88 ORTHO HEIGHT -   122.    (meters)      400.    (feet) SCALED
 JV6052  ______________________________________________________________________
 JV6052  GEOID HEIGHT    -        -32.199 (meters)                     GEOID18
 JV6052  LAPLACE CORR    -         -2.78  (seconds)                    DEFLEC18
 JV6052  HORZ ORDER      -  SECOND
 JV6052
 JV6052.The horizontal coordinates were established by classical geodetic methods
 JV6052.and adjusted by the National Geodetic Survey in January 1992.
 JV6052
 JV6052.The orthometric height was scaled from a topographic map.
 JV6052
 JV6052.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6052.GEOID18 height accuracy estimate available here.
 JV6052
 JV6052.Click photographs - Photos may exist for this station.
 JV6052
 JV6052.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6052
 JV6052. The following values were computed from the NAD 83(1991) position.
 JV6052
 JV6052;                    North         East     Units Scale Factor Converg.
 JV6052;SPC MD       -   181,738.279   417,385.410   MT  0.99997768   +0 07 35.4
 JV6052;SPC MD       -   596,253.00  1,369,371.97   sFT  0.99997768   +0 07 35.4
 JV6052;UTM  18      - 4,352,019.079   344,932.999   MT  0.99989607   -1 08 21.9
 JV6052
 JV6052!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6052!SPC MD       -   0.99998594  x   0.99997768  =   0.99996363
 JV6052!UTM  18      -   0.99998594  x   0.99989607  =   0.99988202
 JV6052
 JV6052:                Primary Azimuth Mark                     Grid Az
 JV6052:SPC MD       -  RANDALLSTOWN RAD WBAL CEN MAST           015 32 30.6
 JV6052:UTM  18      -  RANDALLSTOWN RAD WBAL CEN MAST           016 48 27.9
 JV6052
 JV6052_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4493252019(NAD 83)
 JV6052
 JV6052|---------------------------------------------------------------------|
 JV6052| PID    Reference Object                     Distance      Geod. Az  |
 JV6052|                                                           dddmmss.s |
 JV6052| JV6039 RANDALLSTOWN RAD WBAL CEN MAST      APPROX. 8.3 KM 0154006.0 |
 JV6052| CA9414 FIELD RM 1                           63.240 METERS 05652     |
 JV6052| JV6045 ACROSS                              340.661 METERS 05835     |
 JV6052| JV6057 HOLLOFIELD FIRE LOOKOUT TOWER       APPROX. 0.9 KM 1692636.5 |
 JV6052| JV6051 FIELD 2                             222.794 METERS 19524     |
 JV6052| CA9415 FIELD RM 2                           23.766 METERS 26019     |
 JV6052|---------------------------------------------------------------------|
 JV6052
 JV6052                          SUPERSEDED SURVEY CONTROL
 JV6052
 JV6052  NAD 83(1986)-  39 18 13.24803(N)    076 47 54.38063(W) AD(       ) 2
 JV6052  NAD 27      -  39 18 12.86860(N)    076 47 55.47050(W) AD(       ) 2
 JV6052
 JV6052.Superseded values are not recommended for survey control.
 JV6052
 JV6052.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6052.See file dsdata.pdf to determine how the superseded data were derived.
 JV6052
 JV6052_MARKER: DS = TRIANGULATION STATION DISK
 JV6052_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6052_STAMPING: FIELD 1957
 JV6052_MARK LOGO: CGS
 JV6052_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6052+STABILITY: SURFACE MOTION
 JV6052
 JV6052  HISTORY     - Date     Condition        Report By
 JV6052  HISTORY     - 1957     MONUMENTED       CGS
 JV6052  HISTORY     - 1958     GOOD             CGS
 JV6052  HISTORY     - 1961     GOOD             CGS
 JV6052
 JV6052                          STATION DESCRIPTION
 JV6052
 JV6052'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6052'THE STATION IS LOCATED ABOUT 10 MILES WEST OF THE CENTER OF
 JV6052'BALTIMORE, 2.5 MILES NORTH OF ELLICOTT CITY, ON THE POINT OF A
 JV6052'SLOPING RIDGE TO THE NORTH, INTO THE PATAPSCO RIVER VALLEY AND
 JV6052'0.15 MILE SOUTH OF THE PATAPSCO RIVER.  THE MARK IS SET FLUSH
 JV6052'AND THE DISK IS STAMPED FIELD 1957.
 JV6052'
 JV6052'R.M. NO.1 IS 3 FEET SOUTHEAST OF NORTHWEST LEG OF TRANSMISSION
 JV6052'LINE TOWER.  THE MARK PROJECTS ABOUT 3 INCHES AND THE DISK IS
 JV6052'STAMPED FIELD NO 1 1957.
 JV6052'
 JV6052'R.M. NO.2 IS SET FLUSH AND THE DISK IS STAMPED FIELD NO 2 1957.
 JV6052'
 JV6052'TO REACH FROM THE JUNCTION OF U.S. HIGHWAYS 29 AND 40, NORTHWEST
 JV6052'OF ELLICOTT CITY.  GO NORTHEAST ON U.S. HIGHWAY 40 FOR 0.35 MILE
 JV6052'TO A SIDE ROAD LEFT AT AMACO GAS STATION ON LEFT, TURN LEFT, CROSS
 JV6052'WEST BOUND TRAFFIC LANE AND GO NORTH ON SURFACED ROAD FOR 1.05
 JV6052'MILES TO A ROAD RIGHT AT A CHURCH ON RIGHT, TURN RIGHT AND GO
 JV6052'EAST FOR 0.55 MILE TO CROSSROADS, TURN LEFT AND GO NORTH FOR 0.25
 JV6052'TO GATE JUST NORTH OF MR. ALBERT MELLORS HOUSE.  CONTINUE
 JV6052'THROUGH ALUMINUM GATE INTO FIELD AND CONTINUE NORTH
 JV6052'(DOWNRIDGE) THROUGH FIELD ALONG FENCE FOR 0.2 TO ANOTHER GATE
 JV6052'AT FENCE CORNER, GO THROUGH GATE CONTINUE NORTH ON TRACK
 JV6052'ROAD FOR 0.15 TO STATION SITE.
 JV6052'
 JV6052'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV6052
 JV6052                          STATION RECOVERY (1958)
 JV6052
 JV6052'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV6052'STATION RECOVERED AS DESCRIBED.
 JV6052'
 JV6052'TRIANGULATION STATION FIELD 1957 AND ACROSS 1957 ARE
 JV6052'INTERVISIBLE FROM THE GROUND.  ALSO TRAVERSE STATION HALLO 1957,
 JV6052'IN THE CEILING OF THE HALLO FIELD LOOKOUT TOWER IS VISIBLE FROM
 JV6052'THE GROUND.
 JV6052
 JV6052                          STATION RECOVERY (1961)
 JV6052
 JV6052'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (WER)
 JV6052'STATION RECOVERED AS DESCRIBED.  ALL MARKS APPEARED IN GOOD
 JV6052'CONDITION.
 JV6052'
 JV6052'HIGHWAY CONSTRUCTION WILL DESTROY THIS MARK IN 1962.
 JV6052'
 JV6052'FIELD 2 1961 WAS ESTABLISHED NEARBY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3933 ***********************************************************************
 JU3933  DESIGNATION -  FIELD 1898
 JU3933  PID         -  JU3933
 JU3933  STATE/COUNTY-  MD/CECIL
 JU3933  COUNTRY     -  US
 JU3933  USGS QUAD   -  NORTH EAST (2016)
 JU3933
 JU3933                         *CURRENT SURVEY CONTROL
 JU3933  ______________________________________________________________________
 JU3933* NAD 83(1991) POSITION- 39 30 43.38468(N) 075 54 04.78462(W)   ADJUSTED
 JU3933* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3933  ______________________________________________________________________
 JU3933  GEOID HEIGHT    -        -33.309 (meters)                     GEOID18
 JU3933  LAPLACE CORR    -         -0.91  (seconds)                    DEFLEC18
 JU3933  HORZ ORDER      -  THIRD
 JU3933
 JU3933.The horizontal coordinates were established by classical geodetic methods
 JU3933.and adjusted by the National Geodetic Survey in January 1992.
 JU3933
 JU3933.The orthometric height was scaled from a topographic map.
 JU3933
 JU3933.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3933.GEOID18 height accuracy estimate available here.
 JU3933
 JU3933.Click photographs - Photos may exist for this station.
 JU3933
 JU3933.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3933
 JU3933. The following values were computed from the NAD 83(1991) position.
 JU3933
 JU3933;                    North         East     Units Scale Factor Converg.
 JU3933;SPC MD       -   205,421.487   494,482.922   MT  1.00001144   +0 41 22.4
 JU3933;SPC MD       -   673,953.66  1,622,316.05   sFT  1.00001144   +0 41 22.4
 JU3933;UTM  18      - 4,373,989.742   422,517.385   MT  0.99967391   -0 34 24.6
 JU3933
 JU3933!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3933!SPC MD       -   1.00000526  x   1.00001144  =   1.00001670
 JU3933!UTM  18      -   1.00000526  x   0.99967391  =   0.99967917
 JU3933
 JU3933:                Primary Azimuth Mark                     Grid Az
 JU3933:SPC MD       -  DUCK 1898                                036 26 36.4
 JU3933:UTM  18      -  DUCK 1898                                037 42 23.4
 JU3933
 JU3933_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2251773989(NAD 83)
 JU3933
 JU3933|---------------------------------------------------------------------|
 JU3933| PID    Reference Object                     Distance      Geod. Az  |
 JU3933|                                                           dddmmss.s |
 JU3933| JU3921 DUCK 1898                           APPROX. 1.4 KM 0370758.8 |
 JU3933|---------------------------------------------------------------------|
 JU3933
 JU3933                          SUPERSEDED SURVEY CONTROL
 JU3933
 JU3933  NAD 83(1986)-  39 30 43.37634(N)    075 54 04.79012(W) AD(       ) 3
 JU3933  NAD 27      -  39 30 42.98100(N)    075 54 06.00200(W) AD(       ) 3
 JU3933  USSD        -  39 30 43.36100(N)    075 54 05.83200(W) AD(       ) 3
 JU3933
 JU3933.Superseded values are not recommended for survey control.
 JU3933
 JU3933.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3933.See file dsdata.pdf to determine how the superseded data were derived.
 JU3933
 JU3933_MARKER: Z = SEE DESCRIPTION
 JU3933_SETTING: 0 = UNSPECIFIED SETTING
 JU3933_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3933
 JU3933  HISTORY     - Date     Condition        Report By
 JU3933  HISTORY     - 1898     MONUMENTED       CGS
 JU3933  HISTORY     - 1902     GOOD             CGS
 JU3933
 JU3933                          STATION DESCRIPTION
 JU3933
 JU3933'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 JU3933'ON N SIDE OF ELK RIVER, 1 MILE NE FROM TOWN POINT WHARF, ON
 JU3933'EXTREME END OF OLD FIELD POINT MARKED BY A STAKE 2 BY 4 INCHES
 JU3933'AND 2 FEET LONG.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6051 ***********************************************************************
 JV6051  DESIGNATION -  FIELD 2
 JV6051  PID         -  JV6051
 JV6051  STATE/COUNTY-  MD/HOWARD
 JV6051  COUNTRY     -  US
 JV6051  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6051
 JV6051                         *CURRENT SURVEY CONTROL
 JV6051  ______________________________________________________________________
 JV6051* NAD 83(1991) POSITION- 39 18 06.28577(N) 076 47 56.84297(W)   ADJUSTED
 JV6051* NAVD 88 ORTHO HEIGHT -   128.    (meters)      420.    (feet) SCALED
 JV6051  ______________________________________________________________________
 JV6051  GEOID HEIGHT    -        -32.199 (meters)                     GEOID18
 JV6051  LAPLACE CORR    -         -2.86  (seconds)                    DEFLEC18
 JV6051  HORZ ORDER      -  SECOND
 JV6051
 JV6051.The horizontal coordinates were established by classical geodetic methods
 JV6051.and adjusted by the National Geodetic Survey in January 1992.
 JV6051
 JV6051.The orthometric height was scaled from a topographic map.
 JV6051
 JV6051.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6051.GEOID18 height accuracy estimate available here.
 JV6051
 JV6051.Click photographs - Photos may exist for this station.
 JV6051
 JV6051.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6051
 JV6051. The following values were computed from the NAD 83(1991) position.
 JV6051
 JV6051;                    North         East     Units Scale Factor Converg.
 JV6051;SPC MD       -   181,523.367   417,326.691   MT  0.99997743   +0 07 33.9
 JV6051;SPC MD       -   595,547.91  1,369,179.32   sFT  0.99997743   +0 07 33.9
 JV6051;UTM  18      - 4,351,805.534   344,869.551   MT  0.99989631   -1 08 23.3
 JV6051
 JV6051!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6051!SPC MD       -   0.99998500  x   0.99997743  =   0.99996243
 JV6051!UTM  18      -   0.99998500  x   0.99989631  =   0.99988132
 JV6051
 JV6051:                Primary Azimuth Mark                     Grid Az
 JV6051:SPC MD       -  RANDALLSTOWN RAD WBAL CEN MAST           015 32 06.1
 JV6051:UTM  18      -  RANDALLSTOWN RAD WBAL CEN MAST           016 48 03.3
 JV6051
 JV6051_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4486951805(NAD 83)
 JV6051
 JV6051|---------------------------------------------------------------------|
 JV6051| PID    Reference Object                     Distance      Geod. Az  |
 JV6051|                                                           dddmmss.s |
 JV6051| JV6052 FIELD                               222.794 METERS 01524     |
 JV6051| JV6039 RANDALLSTOWN RAD WBAL CEN MAST      APPROX. 8.5 KM 0153940.0 |
 JV6051| CA9416 FIELD 2 RM 3                         18.127 METERS 10137     |
 JV6051| CA9417 FIELD 2 RM 4                         30.116 METERS 21033     |
 JV6051|---------------------------------------------------------------------|
 JV6051
 JV6051                          SUPERSEDED SURVEY CONTROL
 JV6051
 JV6051  NAD 83(1986)-  39 18 06.28334(N)    076 47 56.85116(W) AD(       ) 2
 JV6051  NAD 27      -  39 18 05.90380(N)    076 47 57.94120(W) AD(       ) 2
 JV6051
 JV6051.Superseded values are not recommended for survey control.
 JV6051
 JV6051.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6051.See file dsdata.pdf to determine how the superseded data were derived.
 JV6051
 JV6051_MARKER: DS = TRIANGULATION STATION DISK
 JV6051_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6051_STAMPING: FIELD 2 1961
 JV6051_MARK LOGO: CGS
 JV6051_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6051+STABILITY: SURFACE MOTION
 JV6051
 JV6051  HISTORY     - Date     Condition        Report By
 JV6051  HISTORY     - 1961     MONUMENTED       CGS
 JV6051
 JV6051                          STATION DESCRIPTION
 JV6051
 JV6051'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (WER)
 JV6051'THE STATION IS ABOUT 10 MILES WEST OF THE CENTER OF BALTIMORE,
 JV6051'2-1/2 MILES NORTH OF ELLICOTT CITY, ON A HILL ON THE SOUTHWEST
 JV6051'SIDE OF THE PATAPSCO RIVER ON PROPERTY OF MR. ALBERT MELLOR.  IT
 JV6051'IS AT THE DOWN-HILL END OF THE PASTURE BEHIND HIS HOUSE, ON THE
 JV6051'CREST OF THE RIDGE ABOUT 100 FEET NORTHEAST OF A LONE TWIN-TRUNK
 JV6051'TULIP TREE.
 JV6051'
 JV6051'THE STATION SURFACE AND UNDERGROUND MARKS, STAMPED FIELD 2 1961,
 JV6051'ARE STANDARD MARKS LOCATED 24.6 FEET EAST OF THE FENCE CORNER BY
 JV6051'THE GATE AND TWO FEET SOUTH OF THE FENCE, INSIDE THE PASTURE.  THE
 JV6051'SURFACE MARK IS SET IN A SQUARE CONCRETE POST PROJECTING FOUR
 JV6051'INCHES.
 JV6051'
 JV6051'REFERENCE MARK NO. 3, A STANDARD DISK SET IN A ROUND CONCRETE
 JV6051'POST, IS STAMPED FIELD 2 NO.3 1961.  IT IS 84 FEET EAST OF THE
 JV6051'FENCE CORNER, ONE FOOT SOUTH OF THE FENCE, AND PROJECTS ONE INCH.
 JV6051'
 JV6051'REFERENCE MARK NO. 4, A STANDARD DISK SET IN A SQUARE CONCRETE
 JV6051'POST, IS STAMPED FIELD 2 NO.4 1961.  IT IS 93-1/2 FEET SOUTH OF
 JV6051'THE FENCE CORNER, 5 FEET NORTH OF THE TWIN-TRUNK TULIP TREE, AND
 JV6051'ONE FOOT EAST OF THE FENCE, INSIDE THE PASTURE.  IT PROJECTS
 JV6051'ABOUT ONE INCH.
 JV6051'
 JV6051'TO REACH THE STATION FROM THE INTERSECTION OF ROUTES U.S.-29 AND
 JV6051'U.S.-40 NORTHWEST OF ELLICOTT CITY, GO NORTHEASTWARD ON U.S.-29
 JV6051'ABOUT 0.3 MILE TO ROUTE MD-99, ROGERS AVENUE.  TURN LEFT AND GO
 JV6051'NORTHWARD 1.1 MILE TO A CHURCH AND ROAD ON THE RIGHT.  TURN RIGHT
 JV6051'ON CHURCH LANE AND GO 0.5 MILE TO HIGH RIDGE ROAD AND THE
 JV6051'DRIVEWAY TO MR. MELLORS HOUSE.  TURN LEFT AND FOLLOW THE
 JV6051'DRIVEWAY PAST THE HOUSE TO AN ALUMINUM GATE LEADING INTO THE
 JV6051'PASTURE.  CONTINUE THROUGH THE GATE, ABOUT 0.25 MILE
 JV6051'DOWNRIDGE TO ANOTHER GATE AND THE MARKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6345 ***********************************************************************
 HV6345  DESIGNATION -  FIELD RESET
 HV6345  PID         -  HV6345
 HV6345  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6345  COUNTRY     -  US
 HV6345  USGS QUAD   -  ANNAPOLIS (2016)
 HV6345
 HV6345                         *CURRENT SURVEY CONTROL
 HV6345  ______________________________________________________________________
 HV6345* NAD 83(1991) POSITION- 38 59 45.90367(N) 076 29 37.21639(W)   ADJUSTED
 HV6345* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 HV6345  ______________________________________________________________________
 HV6345  GEOID HEIGHT    -        -33.310 (meters)                     GEOID18
 HV6345  LAPLACE CORR    -         -3.86  (seconds)                    DEFLEC18
 HV6345  HORZ ORDER      -  SECOND
 HV6345
 HV6345.The horizontal coordinates were established by classical geodetic methods
 HV6345.and adjusted by the National Geodetic Survey in January 1992.
 HV6345
 HV6345.The orthometric height was scaled from a topographic map.
 HV6345
 HV6345.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6345.GEOID18 height accuracy estimate available here.
 HV6345
 HV6345.Click photographs - Photos may exist for this station.
 HV6345
 HV6345.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6345
 HV6345. The following values were computed from the NAD 83(1991) position.
 HV6345
 HV6345;                    North         East     Units Scale Factor Converg.
 HV6345;SPC MD       -   147,693.170   443,861.530   MT  0.99995204   +0 19 04.0
 HV6345;SPC MD       -   484,556.68  1,456,235.70   sFT  0.99995204   +0 19 04.0
 HV6345;UTM  18      - 4,317,403.164   370,650.179   MT  0.99980602   -0 56 24.2
 HV6345
 HV6345!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6345!SPC MD       -   1.00000401  x   0.99995204  =   0.99995605
 HV6345!UTM  18      -   1.00000401  x   0.99980602  =   0.99981003
 HV6345
 HV6345:                Primary Azimuth Mark                     Grid Az
 HV6345:SPC MD       -  SEVERN                                   073 50 18.0
 HV6345:UTM  18      -  SEVERN                                   075 05 46.2
 HV6345
 HV6345_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7065017403(NAD 83)
 HV6345
 HV6345|---------------------------------------------------------------------|
 HV6345| PID    Reference Object                     Distance      Geod. Az  |
 HV6345|                                                           dddmmss.s |
 HV6345| JV5181 MANRESA CATH RETREAT CROSS          APPROX. 1.1 KM 0111204.2 |
 HV6345| CX2758 FIELD RM 1                           14.110 METERS 02428     |
 HV6345| HV6324 SEVERN                              APPROX. 0.8 KM 0740922.0 |
 HV6345| CX2759 FIELD RM 2                           13.030 METERS 17255     |
 HV6345| CX2760 FIELD RM 3                            8.207 METERS 27248     |
 HV6345| JV5794 RIDGEWAY TANK                       APPROX. 2.5 KM 3342144.9 |
 HV6345|---------------------------------------------------------------------|
 HV6345
 HV6345                          SUPERSEDED SURVEY CONTROL
 HV6345
 HV6345  NAD 83(1986)-  38 59 45.89988(N)    076 29 37.22767(W) AD(       ) 2
 HV6345  NAD 27      -  38 59 45.49800(N)    076 29 38.36800(W) AD(       ) 2
 HV6345  USSD        -  38 59 45.86300(N)    076 29 38.21200(W) AD(       ) 3
 HV6345
 HV6345.Superseded values are not recommended for survey control.
 HV6345
 HV6345.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6345.See file dsdata.pdf to determine how the superseded data were derived.
 HV6345
 HV6345_STAMPING: M.S.F.C.  U.S.C.S.
 HV6345_MARK LOGO: MDSFC
 HV6345_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6345
 HV6345  HISTORY     - Date     Condition        Report By
 HV6345  HISTORY     - 1906     MONUMENTED       MDSFC
 HV6345  HISTORY     - 1910     GOOD             CGS
 HV6345  HISTORY     - 1932     GOOD             CGS
 HV6345  HISTORY     - 1952     MARK NOT FOUND   CGS
 HV6345  HISTORY     - 1954     MARK NOT FOUND   CGS
 HV6345
 HV6345                          STATION DESCRIPTION
 HV6345
 HV6345'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV6345'ON THE SW SHORE OF SEVERN RIVER, AT THE EDGE OF A FIELD, ON FIRST
 HV6345'POINT E OF RAILWAY BRIDGE AND 1/4 MILE N OF COUNTY BRIDGE, ON A
 HV6345'ROUND-KNOB HILL ABOUT 10 FEET ABOVE HIGH WATER, AND 15 FEET W OF
 HV6345'EDGE OF LOW SAND POINT EXTENDING 50 YARDS TO THE W.  STATION IS
 HV6345'ABOUT 15 METERS N OF NW CORNER OF DWELLING HOUSE AND ABOUT 40
 HV6345'METERS ABOVE A NEW PIER EXTENDING 80 METERS OUT INTO THE WATER.
 HV6345'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6345'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6345'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6345'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6345'DISTANCES AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF
 HV6345'REFERENCE ARE AS FOLLOWS--BLAZE IN 12-INCH POPLAR
 HV6345'TREE, 7.18 METERS (23.56 FEET), N 80 DEG 53 MIN W.  CENTER CHIMNEY
 HV6345'OF LEAD-COLORED HOUSE ON OPPOSITE SHORE, 3/4 MILE, N 25 DEG 52
 HV6345'MIN W.  N CHIMNEY OF YELLOW HOUSE ON OPPOSITE SHORE, 1/2 MILE,
 HV6345'N 1 DEG 51 MIN E.  BLAZE IN 12-INCH PINE TREE, 10.30 METERS (33.8
 HV6345'FEET), S 66 DEG 13 MIN E.  CHAPEL DOME, NAVAL ACADEMY, 1 MILE, S 21
 HV6345'DEG 24 MIN E.  HOSPITAL CUPOLA, 3/4 MILE, S 13 DEG 29 MIN E.
 HV6345
 HV6345                          STATION RECOVERY (1932)
 HV6345
 HV6345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6345'THE ORIGINAL DESCRIPTION SHOULD BE CANCELED AND THE FOLLOWING
 HV6345'SUBSTITUTED--
 HV6345'
 HV6345'ON THE SW SHORE OF THE SEVERN RIVER ON THE FIRST POINT E OF THE
 HV6345'ELECTRIC RAILWAY BRIDGE AND 1/4 MILE W OF THE COUNTY
 HV6345'BRIDGE.  STATION IS ON THE LAWN 15 METERS N OF NW CORNER OF
 HV6345'DWELLING HOUSE AND ABOUT 10 FEET ABOVE HIGH WATER AND 300 METERS W
 HV6345'BY S OF A SANDY SPIT EXTENDING EASTWARD.
 HV6345'
 HV6345'STATION WAS RE-MARKED IN 1906 BY A HOLE IN THE CENTER OF THE TOP
 HV6345'OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6345'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6345'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6345'
 HV6345'REFERENCE MARK NO.1 IS MARKED BY
 HV6345'STANDARD BRONZE DISK SET IN CENTER OF THE CONCRETE WALK AT THE
 HV6345'TURN OF A WALK LEADING FROM THE PORCH TO THE KICHEN DOOR OF THE
 HV6345'DWELLING.
 HV6345'
 HV6345'REFERENCE MARK NO.2, MARKED BY A STANDARD BRONZE DISK SET IN
 HV6345'CONCRETE, IN THE TOP OF A TILE, IS AT THE
 HV6345'REAR CORNER OF THE GARAGE BELONGING TO THE DWELLING.
 HV6345'
 HV6345'REFERENCE MARK NO.3, MARKED BY A STANDARD BRONZE DISK SET IN
 HV6345'CONCRETE, IN THE TOP OF A TILE, IS AT THE
 HV6345'OUTER EDGE OF THE LAWN.
 HV6345
 HV6345                          STATION RECOVERY (1952)
 HV6345
 HV6345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (WTA)
 HV6345'LETTER FROM MR. W.T. ARMBRUSTER, 82 MARYLAND AVENUE, ANNAPOLIS,
 HV6345'MARYLAND, DATED MARCH 27, 1952--
 HV6345'
 HV6345'REFERENCE MARK 1 HAS BEEN REMOVED DUE TO PROPERTY
 HV6345'CONSTRUCTION.  DISK STAMPED FIELD NO 1 1932 WAS RECEIVED AT THIS
 HV6345'OFFICE APRIL 16, 1952.
 HV6345
 HV6345                          STATION RECOVERY (1954)
 HV6345
 HV6345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 HV6345'STATION WAS SEARCHED FOR BUT NOT FOUND.  THE LOCATION OF THE MARK,
 HV6345'FROM THE 1932 DESCRIPTION, WOULD PLACE IT UNDER AN ASPHALT
 HV6345'DRIVEWAY.  THE OWNER OF THE PROPERTY, MR. A.G. PAVES, WAS
 HV6345'CONTACTED, AND HE VERIFIED THAT THE MARK WAS COVERED.  NO ATTEMPT
 HV6345'WAS MADE TO DIG FOR THE STATION.  REFERENCE MARKS 2 AND 3 WERE
 HV6345'NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8927 ***********************************************************************
 HV8927  CBN         -  This is a Cooperative Base Network Control Station.
 HV8927  DESIGNATION -  FIELDS
 HV8927  PID         -  HV8927
 HV8927  STATE/COUNTY-  MD/CALVERT
 HV8927  COUNTRY     -  US
 HV8927  USGS QUAD   -  COVE POINT (2016)
 HV8927
 HV8927                         *CURRENT SURVEY CONTROL
 HV8927  ______________________________________________________________________
 HV8927* NAD 83(2011) POSITION- 38 23 14.77354(N) 076 25 08.26492(W)   ADJUSTED
 HV8927* NAD 83(2011) ELLIP HT-    -2.036 (meters)        (06/27/12)   ADJUSTED
 HV8927* NAD 83(2011) EPOCH   -  2010.00
 HV8927* NAVD 88 ORTHO HEIGHT -    32.378 (meters)      106.23  (feet) ADJUSTED
 HV8927  ______________________________________________________________________
 HV8927  GEOID HEIGHT    -        -34.400 (meters)                     GEOID18
 HV8927  NAD 83(2011) X  -  1,175,472.634 (meters)                     COMP
 HV8927  NAD 83(2011) Y  - -4,865,867.124 (meters)                     COMP
 HV8927  NAD 83(2011) Z  -  3,939,241.781 (meters)                     COMP
 HV8927  LAPLACE CORR    -         -4.36  (seconds)                    DEFLEC18
 HV8927  DYNAMIC HEIGHT  -         32.359 (meters)      106.16  (feet) COMP
 HV8927  MODELED GRAVITY -    980,023.7   (mgal)                       NAVD 88
 HV8927
 HV8927  VERT ORDER      -  SECOND    CLASS I
 HV8927
 HV8927  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8927  Standards:
 HV8927         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8927            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8927  -------------------------------------------------------------------
 HV8927  NETWORK    0.64   1.29           0.28   0.24   0.66     -0.00878120
 HV8927  -------------------------------------------------------------------
 HV8927  Click here for local accuracies and other accuracy information.
 HV8927
 HV8927.The horizontal coordinates were established by GPS observations
 HV8927.and adjusted by the National Geodetic Survey in June 2012.
 HV8927
 HV8927.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8927.been affixed to the stable North American tectonic plate. See 
 HV8927.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8927
 HV8927.The horizontal coordinates are valid at the epoch date displayed above
 HV8927.which is a decimal equivalence of Year/Month/Day.
 HV8927
 HV8927.The orthometric height was determined by differential leveling and
 HV8927.adjusted by the NATIONAL GEODETIC SURVEY
 HV8927.in August 1994.
 HV8927
 HV8927.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8927.GEOID18 height accuracy estimate available here.
 HV8927
 HV8927.Click photographs - Photos may exist for this station.
 HV8927
 HV8927.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8927
 HV8927.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8927
 HV8927.The ellipsoidal height was determined by GPS observations
 HV8927.and is referenced to NAD 83.
 HV8927
 HV8927.The dynamic height is computed by dividing the NAVD 88
 HV8927.geopotential number by the normal gravity value computed on the
 HV8927.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8927.degrees latitude (g = 980.6199 gals.).
 HV8927
 HV8927.The modeled gravity was interpolated from observed gravity values.
 HV8927
 HV8927. The following values were computed from the NAD 83(2011) position.
 HV8927
 HV8927;                    North         East     Units Scale Factor Converg.
 HV8927;SPC MD       -    80,170.114   450,763.237   MT  0.99998594   +0 21 52.8
 HV8927;SPC MD       -   263,024.78  1,478,879.05   sFT  0.99998594   +0 21 52.8
 HV8927;UTM  18      - 4,249,756.417   376,074.240   MT  0.99978913   -0 52 52.5
 HV8927
 HV8927!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8927!SPC MD       -   1.00000032  x   0.99998594  =   0.99998626
 HV8927!UTM  18      -   1.00000032  x   0.99978913  =   0.99978945
 HV8927
 HV8927_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7607449756(NAD 83)
 HV8927
 HV8927                          SUPERSEDED SURVEY CONTROL
 HV8927
 HV8927  NAD 83(2007)-  38 23 14.77426(N)    076 25 08.26645(W) AD(2002.00) 0
 HV8927  ELLIP H (02/10/07)   -2.032  (m)                       GP(2002.00)    
 HV8927  ELLIP H (02/12/02)   -1.989  (m)                       GP(       ) 4 1
 HV8927  ELLIP H (12/03/93)   -1.970  (m)                       GP(       ) 4 1
 HV8927  NAD 83(1991)-  38 23 14.77399(N)    076 25 08.26495(W) AD(       ) B
 HV8927  ELLIP H (10/23/91)   -1.978  (m)                       GP(       ) 4 1
 HV8927  NAVD 88 (11/16/93)   32.4    (m)  GEOID93  model used  GPS OBS        
 HV8927  NGVD 29              32.62   (m)          107.0    (f) LEVELING    3  
 HV8927
 HV8927.Superseded values are not recommended for survey control.
 HV8927
 HV8927.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8927.See file dsdata.pdf to determine how the superseded data were derived.
 HV8927
 HV8927_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8927_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8927_STAMPING: FIELDS 1990
 HV8927_MARK LOGO: NGS
 HV8927_PROJECTION: RECESSED 4 CENTIMETERS
 HV8927_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8927_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8927+STABILITY: SURFACE MOTION
 HV8927_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8927+SATELLITE: SATELLITE OBSERVATIONS - December 05, 2022
 HV8927
 HV8927  HISTORY     - Date     Condition        Report By
 HV8927  HISTORY     - 1990     MONUMENTED       NGS
 HV8927  HISTORY     - 19901207 GOOD             NGS
 HV8927  HISTORY     - 19910129 GOOD
 HV8927  HISTORY     - 19921117 GOOD             MCCRON
 HV8927  HISTORY     - 19930511 GOOD             NOS
 HV8927  HISTORY     - 19990327 GOOD             GEOMET
 HV8927  HISTORY     - 20000216 GOOD             NGS
 HV8927  HISTORY     - 20080722 GOOD             INDIV
 HV8927  HISTORY     - 20221205 GOOD             MDSHA
 HV8927
 HV8927                          STATION DESCRIPTION
 HV8927
 HV8927'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8927'THE STATION IS LOCATED ABOUT 3.68 KM (2.29 MI) WEST OF COVE POINT, 8.0
 HV8927'KM (5.0 MI) NORTHEAST OF SOLOMONS ISLAND AND 11.84 KM (7.36 MI)
 HV8927'SOUTHEAST OF ST LEONARD ON THE GROUNDS OF COVE POINT PARK.
 HV8927'OWNERSHIP--CALVERT COUNTY DEPARTMENT OF RECREATION AND PARKS
 HV8927'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 2,4 AND
 HV8927'STATE HIGHWAY 497, WEST OF AN AREA CALLED BERTHA, GO EAST ON STATE
 HV8927'HIGHWAY 497 FOR 1.12 KM (0.70 MI) TO THE ENTERANCE TO COVE POINT
 HV8927'PARK.  TURN LEFT AND GO NORTHEAST ON THE PARK ROAD FOR 0.5 KM
 HV8927'(0.3 MI) TO A SIDE ROAD LEFT, TURN LEFT FOR 0.24 KM (0.15 MI) TO THE
 HV8927'STATION ON THE RIGHT NEAR THE CORNER OF LEFT FIELD OF A BASEBALL
 HV8927'DIAMOND.
 HV8927'THE STATION DISK IS SET IN THE TOP OF A 0.23 M (0.75 FT) ROUND
 HV8927'CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND. IT
 HV8927'IS 22.25 M (73.00 FT) NORTHEAST OF A LIGHT POLE, 12.50 M (41.01 FT)
 HV8927'SOUTHEAST OF THE NORTHEAST CORNER OF A PARKING AREA, 15.0 M (49.2 FT)
 HV8927'SOUTH SOUTHWEST OF THE SOUTH CORNER OF A PARKING AREA, 24.23 M
 HV8927'(79.49 FT) SOUTHWEST OF ANOTHER LIGHT POLE AND 35.05 M (114.99 FT)
 HV8927'WEST SOUTHWEST OF A TALL LIGHT POLE FOR THE BALL DIAMOND.
 HV8927
 HV8927                          STATION RECOVERY (1990)
 HV8927
 HV8927'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV8927'STATION IS LOCATED AT THE SOUTHEAST CORNER OF THE COUNTY, BETWEEN
 HV8927'STATE HIGHWAYS 2, 4 AND CHESAPEAKE BAY, ABOUT 3.5 KM (2.2 MI) WEST OF
 HV8927'COVE POINT, 8 KM (5.0 MI) NORTHEAST OF SOLOMONS ISLAND, ON THE
 HV8927'GROUNDS OF COVE POINT PARK, AT A BEND IN THE PAVED ROAD, BETWEEN TWO
 HV8927'PARKING STRIPS, AND AT EDGE OF A BASEBALL FIELD.  OWNERSHIP--CALVERT
 HV8927'COUNTY DEPARTMENT OF RECREATION AND PARKS.  CONTACT RALPH CRANFORD
 HV8927'(301-535-1600 EXT 299) AT THE PRINCE FREDERICK COURTHOUSE FOR KEY TO
 HV8927'GATE.
 HV8927'TO REACH FROM THE CENTER OF THE HIGHWAY 4 BRIDGE OVER THE PATUXENT
 HV8927'RIVER AT SOLOMONS, GO NORTHEAST ON STATE HIGHWAY 4 (ALSO BECOMES
 HV8927'HIGHWAY 2) FOR 7.87 KM (4.89 MI) TO THE JUNCTION OF STATE HIGHWAY 497
 HV8927'ON THE RIGHT.  TURN RIGHT, EAST, ON HIGHWAY 497 FOR 0.39 KM
 HV8927'(0.24 MI) TO A CROSSROAD. CONTINUE AHEAD FOR 0.79 KM (0.49 MI) TO THE
 HV8927'PARK ENTRANCE ON THE LEFT.  TURN LEFT, PASSING THROUGH LOCKED GATE,
 HV8927'ON PAVED ROAD FOR 0.45 KM (0.28 MI) TO A PAVED ROAD LEFT.  TURN LEFT,
 HV8927'NORTHERLY, FOR 0.22 KM (0.14 MI) TO A ROAD CURVE AND STATION ON THE
 HV8927'RIGHT.
 HV8927'STATION MARK IS SET IN THE TOP OF A 20-CM ROUND CONCRETE POST FLUSH
 HV8927'WITH THE GROUND.  IT IS 15.3 M (50.2 FT) SOUTH-SOUTHWEST OF THE
 HV8927'SOUTHWEST CORNER OF A PARKING STRIP, 12.5 EAST-SOUTHEAST OF THE
 HV8927'NORTHEAST CORNER OF A PARKING STRIP, 24.4 M (80.1 FT) WEST OF A LIGHT
 HV8927'POLE AT PARKING STRIP, 22.4 M (73.5 FT) EAST OF A LIGHT POLE AT
 HV8927'PARKING STRIP, AND 35.1 M (115.2 FT) NORTHWEST OF A BALL DIAMOND
 HV8927'LIGHT POLE.
 HV8927'DESCRIBED BY G.R.HEID.
 HV8927
 HV8927                          STATION RECOVERY (1991)
 HV8927
 HV8927'RECOVERED 1991
 HV8927'RECOVERED IN GOOD CONDITION.
 HV8927
 HV8927                          STATION RECOVERY (1992)
 HV8927
 HV8927'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1992
 HV8927'RECOVERED IN GOOD CONDITION.
 HV8927
 HV8927                          STATION RECOVERY (1993)
 HV8927
 HV8927'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1993
 HV8927'RECOVERED IN GOOD CONDITION.
 HV8927
 HV8927                          STATION RECOVERY (1999)
 HV8927
 HV8927'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (DR)
 HV8927'RECOVERED AS DESCRIBED.
 HV8927
 HV8927                          STATION RECOVERY (2000)
 HV8927
 HV8927'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 HV8927'THE STATION IS LOCATED ABOUT 8.04 KM (5.00 MI) NORTHEAST OF SOLOMONS
 HV8927'ISLAND, ABOUT 3.7 KM (2.30 MI) WEST OF COVE POINT ON THE GROUNDS OF
 HV8927'THE COVE POINT STATE PARK NEAR THE NORTH END OF A BALL FIELD.
 HV8927'OWNERSHIP--CALVERT COUNTY BOARD OF PARKS AND RECREATION, NOTE--THE
 HV8927'PARK OPENS LATE AND CLOSES EARLY DURING THE WINTER MONTHS, FOR KEY TO
 HV8927'THE ENTRANCE GATE OF THE PARK NOTIFY MR.  WALTER MCKAINE, PARK
 HV8927'SUPERVISOR ONE DAY IN ADVANCE BEFORE OCCUPYING THE STATION, PHONE
 HV8927'(410) 535-1600, EXTENSION 228.  TO REACH THE STATION FROM THE JUNCTION
 HV8927'OF COMBINED STATE HIGHWAYS 2 AND 4 AND STATE HIGHWAY 497 LOCATED ABOUT
 HV8927'8.37 KM (5.20 MI) NORTHEAST OF THE NORTHEAST END OF THE STATE HIGHWAY
 HV8927'4 BRIDGE OVER THE PATUXENT RIVER AT SOLOMONS ISLAND, GO EAST ON
 HV8927'HIGHWAY 497 FOR 1.05 KM (0.65 MI) TO THE ENTRANCE TO THE COVE POINT
 HV8927'COUNTY PARK ON THE LEFT, TURN LEFT, NORTHEAST ON THE PARK ROAD PASSING
 HV8927'THROUGH THE GATE AND GO 0.48 KM (0.30 MI) TO THE JUNCTION OF A PAVED
 HV8927'ROAD ON THE LEFT, TURN LEFT, NORTHERLY ON THE ROAD FOR 0.24 KM (0.15
 HV8927'MI) TO THE NORTH END OF THE SECOND PARKING AREA FOR THE BALL FIELD AND
 HV8927'THE STATION ON THE RIGHT EAST-SOUTHEAST OF THE EAST CORNER OF THE
 HV8927'PARKING STRIP IN A GRASSY AREA ABOUT 0.9 M (3.0 FT) ABOVE THE PARKING
 HV8927'LOT AND ON THE SLOPE OF THE BALL FIELD.  THE STATION IS AN NGS
 HV8927'HORIZONTAL CONTROL DISK SET IN THE TOP OF A 20 CM CONCRETE POST ABOUT
 HV8927'FLUSH WITH THE GROUND, LOCATED 22.1 M (72.5 FT) EAST-NORTHEAST OF A
 HV8927'LIGHT POLE THAT IS CENTERED APPROXIMATELY ON THE SOUTHEAST SIDE OF THE
 HV8927'PARKING STRIP, 12.44 M (40.81 FT) EAST-SOUTHEAST OF THE EAST CORNER OF
 HV8927'THE PARKING STRIP AND 11.98 M (39.30 FT) SOUTHEAST OF THE SOUTHEAST
 HV8927'EDGE OF THE PARKING STRIP.
 HV8927
 HV8927                          STATION RECOVERY (2008)
 HV8927
 HV8927'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2008 (JAL)
 HV8927'RECOVERED IN GOOD CONDITION BY COA,INC.
 HV8927
 HV8927                          STATION RECOVERY (2022)
 HV8927
 HV8927'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 HV8927'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5748 ***********************************************************************
 HV5748  DESIGNATION -  FIG
 HV5748  PID         -  HV5748
 HV5748  STATE/COUNTY-  MD/TALBOT
 HV5748  COUNTRY     -  US
 HV5748  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5748
 HV5748                         *CURRENT SURVEY CONTROL
 HV5748  ______________________________________________________________________
 HV5748* NAD 83(1991) POSITION- 38 46 59.97747(N) 076 08 25.17684(W)   ADJUSTED
 HV5748* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5748  ______________________________________________________________________
 HV5748  GEOID HEIGHT    -        -34.528 (meters)                     GEOID18
 HV5748  LAPLACE CORR    -         -3.97  (seconds)                    DEFLEC18
 HV5748  HORZ ORDER      -  THIRD
 HV5748
 HV5748.The horizontal coordinates were established by classical geodetic methods
 HV5748.and adjusted by the National Geodetic Survey in January 1992.
 HV5748
 HV5748.The orthometric height was scaled from a topographic map.
 HV5748
 HV5748.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5748.GEOID18 height accuracy estimate available here.
 HV5748
 HV5748.Click photographs - Photos may exist for this station.
 HV5748
 HV5748.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5748
 HV5748. The following values were computed from the NAD 83(1991) position.
 HV5748
 HV5748;                    North         East     Units Scale Factor Converg.
 HV5748;SPC MD       -   124,305.493   474,692.229   MT  0.99995114   +0 32 22.4
 HV5748;SPC MD       -   407,825.60  1,557,386.09   sFT  0.99995114   +0 32 22.4
 HV5748;UTM  18      - 4,293,350.017   400,955.223   MT  0.99972080   -0 42 51.6
 HV5748
 HV5748!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5748!SPC MD       -   1.00000530  x   0.99995114  =   0.99995644
 HV5748!UTM  18      -   1.00000530  x   0.99972080  =   0.99972610
 HV5748
 HV5748:                Primary Azimuth Mark                     Grid Az
 HV5748:SPC MD       -  TANG                                     314 19 38.2
 HV5748:UTM  18      -  TANG                                     315 34 52.2
 HV5748
 HV5748_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0095593350(NAD 83)
 HV5748
 HV5748|---------------------------------------------------------------------|
 HV5748| PID    Reference Object                     Distance      Geod. Az  |
 HV5748|                                                           dddmmss.s |
 HV5748| HV5743 DOCTOR                              393.803 METERS 23135     |
 HV5748| HV5672 TANG                                APPROX. 0.5 KM 3145200.6 |
 HV5748|---------------------------------------------------------------------|
 HV5748
 HV5748                          SUPERSEDED SURVEY CONTROL
 HV5748
 HV5748  NAD 83(1986)-  38 46 59.97305(N)    076 08 25.19093(W) AD(       ) 3
 HV5748  NAD 27      -  38 46 59.49500(N)    076 08 26.39200(W) AD(       ) 3
 HV5748  USSD        -  38 46 59.87700(N)    076 08 26.15600(W) AD(       ) 3
 HV5748
 HV5748.Superseded values are not recommended for survey control.
 HV5748
 HV5748.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5748.See file dsdata.pdf to determine how the superseded data were derived.
 HV5748
 HV5748_MARKER: H = DRILL HOLE
 HV5748_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5748_PROJECTION: PROJECTING 10 CENTIMETERS
 HV5748_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5748
 HV5748  HISTORY     - Date     Condition        Report By
 HV5748  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5748  HISTORY     - 1939     POOR             CGS
 HV5748  HISTORY     - 1940     POOR             CGS
 HV5748  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5748
 HV5748                          STATION DESCRIPTION
 HV5748
 HV5748'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5748'STATION IS ON THE SOUTHEASTERN SHORE OF MILES RIVER, ABOUT 1 MILE
 HV5748'SW OF MILES RIVER BRIDGE, IN CULTIVATED LAND, ABOUT 12 FEET ABOVE
 HV5748'HIGH WATER, 4 YARDS SE OF EDGE OF TREE-COVERED BANK, AND 150 YARDS
 HV5748'NNW OF LARGE BARN WITH TWO CUPOLAS.  STATION MARK IS A HOLE IN THE
 HV5748'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5748'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5748'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5748'COUNTER-SUNK IN TOP OF POST.  DISTANCES AND BEARINGS TO VARIOUS
 HV5748'POINTS OF REFERENCE ARE AS FOLLOWS--NEAR PEAK OF LARGE BARN, 1/4
 HV5748'MILE, S 24 DEG 35 MIN W.  NAIL IN BLAZE IN 8-INCH OAK TREE, 19.14
 HV5748'METERS (62.8 FEET), S 46 DEG 7 MIN W.  NEAR PEAK OF HOUSE, 5/8
 HV5748'MILE, S 85 DEG 19 MIN W.  NAIL IN BLAZE IN HACKBERRY TREE, 8.66
 HV5748'METERS (28.41 FEET), S 86 DEG 42 MIN W.  LEFT CORNER OF DORRANCES
 HV5748'HOUSE, 1/2 MILE, N 76 DEG 20 MIN W.  NAIL IN BLAZE IN 4-INCH CEDAR
 HV5748'TREE, 9.39 METERS (30.81 FEET), N 16 DEG 28 MIN W.  SPINDLE ON
 HV5748'CUPOLA ON HIP-ROOF OF HOUSE, 3/4 MILE, N 21 DEG 21 MIN E.  CENTER
 HV5748'OF WINDMILL ON TOWER, 7/8 MILE, N 34 DEG 31 MIN E.  POINT OF
 HV5748'TOWER ON HOUSE, 7/8 MILE, N 37 DEG 47 MIN E.  LEFT CORNER OF
 HV5748'HENDERSONS HOUSE, 1 MILE, N 53 DEG 56 MIN E. CENTER OF WINDMILL ON
 HV5748'TOWER, 1 MILE, N 55 DEG 17 MIN E.  NEAR PEAK OF TENANT HOUSE, 1/4
 HV5748'MILE, N 81 DEG 12 MIN E.  SPINDLE ON LEFT ONE OF TWO CUPOLAS ON
 HV5748'BARN, 150 YARDS, S 18 DEG 31 MIN E.
 HV5748
 HV5748                          STATION RECOVERY (1939)
 HV5748
 HV5748'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV5748'STATION MARK FOUND IN BADLY BROKEN CONDITION, IN A CULTIVATED
 HV5748'FIELD ON THE SOUTHEASTERN SIDE OF MILES RIVER, ABOUT 1 MILE SW OF
 HV5748'MILES RIVER BRIDGE, ABOUT 5 METERS SE OF THE EDGE OF BRUSH ALONG A
 HV5748'15-FOOT BANK, ABOUT 120 METERS NW OF THE FENCE BETWEEN THE
 HV5748'CULTIVATED FIELD AND FARM BUILDINGS.  THE MARK IS COVERED BY SOIL,
 HV5748'AND WAS POINTED OUT BY THE TENANT FARMER WHO CULTIVATES THE LAND.
 HV5748
 HV5748                          STATION RECOVERY (1940)
 HV5748
 HV5748'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5748'STATION IS ABOUT 1 MILE SW OF MILES RIVER BRIDGE, ON THE
 HV5748'SOUTHEASTERN SHORE OF MILES RIVER.  MARK RECOVERED AS DESCRIBED.
 HV5748'DESCRIPTION ADEQUATE, EXCEPT THAT REFERENCE TREES REFERRED TO AS
 HV5748'POINTS OF REFERENCE HAVE BEEN DESTROYED.
 HV5748'
 HV5748'TOP OF MARK HAS BEEN BROKEN OFF BY FARMER IN PLOWING OF FIELD. IT
 HV5748'IS NOW FLUSH WITH SURFACE OF THE GROUND.
 HV5748
 HV5748                          STATION RECOVERY (1961)
 HV5748
 HV5748'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5748'STATION NOT RECOVERED AFTER AN ADEQUATE SEARCH OF THE AREA.
 HV5748'STATION WAS REPORTED AS BROKEN OFF IN 1940.  THE PRESENT OWNER OF
 HV5748'THE LAND DOES NOT RECALL HAVING EVER SEEN THE MARK.  IT HAS
 HV5748'PROBABLY BEEN REMOVED FROM THE FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6850 ***********************************************************************
 HV6850  DESIGNATION -  FIGHT MSFC 1908
 HV6850  PID         -  HV6850
 HV6850  STATE/COUNTY-  MD/ST MARYS
 HV6850  COUNTRY     -  US
 HV6850  USGS QUAD   -  MECHANICSVILLE (2016)
 HV6850
 HV6850                         *CURRENT SURVEY CONTROL
 HV6850  ______________________________________________________________________
 HV6850* NAD 83(1993) POSITION- 38 25 55.47442(N) 076 37 59.44396(W)   ADJUSTED
 HV6850* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6850  ______________________________________________________________________
 HV6850  GEOID HEIGHT    -        -33.848 (meters)                     GEOID18
 HV6850  LAPLACE CORR    -         -4.26  (seconds)                    DEFLEC18
 HV6850  HORZ ORDER      -  SECOND
 HV6850
 HV6850.The horizontal coordinates were established by classical geodetic methods
 HV6850.and adjusted by the National Geodetic Survey in November 1994.
 HV6850
 HV6850.The orthometric height was scaled from a topographic map.
 HV6850
 HV6850.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6850.GEOID18 height accuracy estimate available here.
 HV6850
 HV6850.Click photographs - Photos may exist for this station.
 HV6850
 HV6850.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6850
 HV6850. The following values were computed from the NAD 83(1993) position.
 HV6850
 HV6850;                    North         East     Units Scale Factor Converg.
 HV6850;SPC MD       -    85,027.960   432,028.111   MT  0.99997965   +0 13 48.8
 HV6850;SPC MD       -   278,962.57  1,417,412.23   sFT  0.99997965   +0 13 48.8
 HV6850;UTM  18      - 4,255,019.560   357,452.204   MT  0.99985024   -1 00 55.2
 HV6850
 HV6850!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6850!SPC MD       -   1.00000535  x   0.99997965  =   0.99998500
 HV6850!UTM  18      -   1.00000535  x   0.99985024  =   0.99985559
 HV6850
 HV6850:                Primary Azimuth Mark                     Grid Az
 HV6850:SPC MD       -  BATTLE MSFC 1908                         050 31 01.7
 HV6850:UTM  18      -  BATTLE MSFC 1908                         051 45 45.7
 HV6850
 HV6850_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5745255019(NAD 83)
 HV6850
 HV6850|---------------------------------------------------------------------|
 HV6850| PID    Reference Object                     Distance      Geod. Az  |
 HV6850|                                                           dddmmss.s |
 HV6850| HV6754 BATTLE MSFC 1908                    APPROX. 2.6 KM 0504450.5 |
 HV6850|---------------------------------------------------------------------|
 HV6850
 HV6850                          SUPERSEDED SURVEY CONTROL
 HV6850
 HV6850  NAD 83(1991)-  38 25 55.47452(N)    076 37 59.44511(W) AD(       ) 2
 HV6850  NAD 83(1986)-  38 25 55.47395(N)    076 37 59.45899(W) AD(       ) 2
 HV6850  NAD 27      -  38 25 55.02500(N)    076 38 00.61500(W) AD(       ) 2
 HV6850  USSD        -  38 25 55.38400(N)    076 38 00.35400(W) AD(       ) 3
 HV6850
 HV6850.Superseded values are not recommended for survey control.
 HV6850
 HV6850.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6850.See file dsdata.pdf to determine how the superseded data were derived.
 HV6850
 HV6850_MARKER: H = DRILL HOLE
 HV6850_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6850_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6850+STABILITY: SURFACE MOTION
 HV6850
 HV6850  HISTORY     - Date     Condition        Report By
 HV6850  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6850  HISTORY     - 1930     GOOD             MDDNR
 HV6850  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6850  HISTORY     - 1953     MARK NOT FOUND   USGS
 HV6850
 HV6850                          STATION DESCRIPTION
 HV6850
 HV6850'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6850'STATION IS ON THE SW SHORE OF PATUXENT RIVER, OPPOSITE MOUTH OF
 HV6850'BATTLE CREEK, ON A PROMINENT LOW POINT, ON LAND KNOWN AS HORSEHEAD
 HV6850'MARSH, ABOUT 1 FOOT ABOVE HIGH WATER, 12 YARDS SSW OF EXTREME END
 HV6850'OF POINT, 15 YARDS WNW OF SHORE OF SMALL CREEK, 40 YARDS NE OF
 HV6850'WOODS, AND 110 YARDS ESE OF A BLUFF 50 FEET HIGH.  STATION IS
 HV6850'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV6850'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6850'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV6850'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. DISTANCES AND
 HV6850'BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LEFT
 HV6850'CORNER OF LEFT CHIMNEY OF LARGE HOUSE, 1 MILE, N 46 DEG 35 MIN W.
 HV6850'DOWELLS WINDMILL, 2-1/2 MILES, N 8 DEG 47 MIN W.  LEFT CHIMNEY ON
 HV6850'SMALL HOUSE ADJOINING LARGE HOUSE, 2-1/4 MILES, N 12 DEG 26 MIN E.
 HV6850'CHIMNEY OF SMALL HOUSE, 2 MILES, N 16 DEG 23 MIN E.  OUTSIDE
 HV6850'CHIMNEY IN CENTER OF GROUP OF BUILDINGS, 2-1/4 MILES, N 64 DEG 15
 HV6850'MIN E.  LEFT TANGENT OF FORREST WHARF, 2 MILES, S 47 DEG 9 MIN E.
 HV6850'NEAR END OF PEAK OF ROOF OF 2 1/2-STORY BUILDING, 1-3/4 MILES,  S 45
 HV6850'DEG S8 MIN E.  LARGE SQUARE CHIMNEY ON LARGE BUILDING, 1 MILE, 322
 HV6850'S 37 DEG 56 MIN.
 HV6850
 HV6850                          STATION RECOVERY (1930)
 HV6850
 HV6850'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6850'STATION RECOVERED AND TRIPOD ERECTED.
 HV6850
 HV6850                          STATION RECOVERY (1943)
 HV6850
 HV6850'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6850'THE LOCALITY WAS VISITED AND A THOROUGH SEARCH WAS MADE BUT NO
 HV6850'TRACE OF THIS STATION COULD BE FOUND.  THE POINT OF MARSH
 HV6850'DESCRIBED IS WASHING AWAY AND IT IS THOUGHT THAT THE STATION HAS
 HV6850'BEEN DESTROYED.
 HV6850'
 HV6850'IT IS RECOMMENDED THAT THE STATION BE CONSIDERED LOST.
 HV6850
 HV6850                          STATION RECOVERY (1953)
 HV6850
 HV6850'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV6850'STATION WAS NOT FOUND.  PROBABLY COVERED WITH SAND AND DIRT FROM
 HV6850'HIGH TIDES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0947 ***********************************************************************
 JV0947  DESIGNATION -  FILBERT
 JV0947  PID         -  JV0947
 JV0947  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0947  COUNTRY     -  US
 JV0947  USGS QUAD   -  CURTIS BAY (2016)
 JV0947
 JV0947                         *CURRENT SURVEY CONTROL
 JV0947  ______________________________________________________________________
 JV0947* NAD 83(1991) POSITION- 39 13 29.91118(N) 076 35 35.33830(W)   ADJUSTED
 JV0947* NAVD 88 ORTHO HEIGHT -    46.144 (meters)      151.39  (feet) ADJUSTED
 JV0947  ______________________________________________________________________
 JV0947  GEOID HEIGHT    -        -32.861 (meters)                     GEOID18
 JV0947  LAPLACE CORR    -         -4.93  (seconds)                    DEFLEC18
 JV0947  DYNAMIC HEIGHT  -         46.119 (meters)      151.31  (feet) COMP
 JV0947  MODELED GRAVITY -    980,094.0   (mgal)                       NAVD 88
 JV0947
 JV0947  HORZ ORDER      -  FIRST
 JV0947  VERT ORDER      -  SECOND    CLASS 0
 JV0947
 JV0947.The horizontal coordinates were established by classical geodetic methods
 JV0947.and adjusted by the National Geodetic Survey in January 1992.
 JV0947
 JV0947.The orthometric height was determined by differential leveling and
 JV0947.adjusted by the NATIONAL GEODETIC SURVEY
 JV0947.in June 1991.
 JV0947
 JV0947.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0947.GEOID18 height accuracy estimate available here.
 JV0947
 JV0947.Click photographs - Photos may exist for this station.
 JV0947
 JV0947.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0947
 JV0947.The dynamic height is computed by dividing the NAVD 88
 JV0947.geopotential number by the normal gravity value computed on the
 JV0947.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0947.degrees latitude (g = 980.6199 gals.).
 JV0947
 JV0947.The modeled gravity was interpolated from observed gravity values.
 JV0947
 JV0947. The following values were computed from the NAD 83(1991) position.
 JV0947
 JV0947;                    North         East     Units Scale Factor Converg.
 JV0947;SPC MD       -   173,059.696   435,130.884   MT  0.99996837   +0 15 19.3
 JV0947;SPC MD       -   567,780.02  1,427,591.91   sFT  0.99996837   +0 15 19.3
 JV0947;UTM  18      - 4,342,952.022   362,480.734   MT  0.99983286   -1 00 27.4
 JV0947
 JV0947!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0947!SPC MD       -   0.99999792  x   0.99996837  =   0.99996629
 JV0947!UTM  18      -   0.99999792  x   0.99983286  =   0.99983078
 JV0947
 JV0947:                Primary Azimuth Mark                     Grid Az
 JV0947:SPC MD       -  BALTIMORE LORD BALTIMORE HOTEL           344 21 53.9
 JV0947:UTM  18      -  BALTIMORE LORD BALTIMORE HOTEL           345 37 40.6
 JV0947
 JV0947_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6248042952(NAD 83)
 JV0947
 JV0947|---------------------------------------------------------------------|
 JV0947| PID    Reference Object                     Distance      Geod. Az  |
 JV0947|                                                           dddmmss.s |
 JV0947| CA9418 FILBERT RM 1                         44.008 METERS 00755     |
 JV0947| CB1665 PROSPECT STA 128                                   0131102.2 |
 JV0947| CA9419 FILBERT RM 5                         25.050 METERS 05302     |
 JV0947| JV5713 CURTIS BAY FAIRFLD CHEM CO TK       APPROX. 1.6 KM 0545330.0 |
 JV0947| JV5675 BALTIMORE MUN AIRPORT BCN 59        APPROX. 7.2 KM 0695107.2 |
 JV0947| JV5731 PAN AMERICAN REFINING CO STACK      APPROX. 2.5 KM 0851217.8 |
 JV0947| JV5734 US QUARANTINE STATION TANK          APPROX. 3.9 KM 1072037.0 |
 JV0947| JV5671 BALTIMORE WATER WKS STANDPIPE        81.944 METERS 11338     |
 JV0947| JV5670 CURTIS BAY TANK                      42.201 METERS 11812     |
 JV0947| JV5674 BALTIMORE US ALCOHOL CO STACK       APPROX. 1.1 KM 1262134.5 |
 JV0947| JV0946 FILBERT RM 2                         25.000 METERS 12904     |
 JV0947| JV5708 US ORDNANCE PLANT TANK              APPROX. 2.2 KM 1780913.3 |
 JV0947| JV5821 NEW YORK WASHINGTON AWY BCN 58      APPROX.10.0 KM 2091705.9 |
 JV0947| JV5824 LINTHICUM HEIGHTS MUN TANK          APPROX. 5.8 KM 2435659.4 |
 JV0947| JV5504 BROMO SELTZER BLDG FINIAL LT        APPROX. 7.4 KM 3411137.8 |
 JV0947| JV5503 BALTIMORE BROMO SELTZER CLKTWR      APPROX. 7.4 KM 3411132.8 |
 JV0947| JV5506 BALTIMORE LORD BALTIMORE HOTEL      APPROX. 7.5 KM 3443713.2 |
 JV0947| JV5501 BALTIMORE FIRST PRESB CH SPIRE      APPROX. 8.5 KM 3445333.3 |
 JV0947| JV5491 BALTIMORE FIRST NAT BANK STK        APPROX. 7.3 KM 3453402.6 |
 JV0947| JV5497 BALTIMORE TRUST FLAT TOP TOWER      APPROX. 7.4 KM 3454847.1 |
 JV0947| JV5496 BALTIMORE TV STATION WMAR MAST      APPROX. 7.4 KM 3454838.5 |
 JV0947| JV5565 MARYLAND CASUALTY TOWER             APPROX. 7.4 KM 3474049.2 |
 JV0947| JV5487 BALTIMORE ST JAMES CATH CHURCH      APPROX. 8.5 KM 3545628.5 |
 JV0947|---------------------------------------------------------------------|
 JV0947
 JV0947                          SUPERSEDED SURVEY CONTROL
 JV0947
 JV0947  NAD 83(1986)-  39 13 29.90761(N)    076 35 35.34765(W) AD(       ) 1
 JV0947  NAD 27      -  39 13 29.52100(N)    076 35 36.46900(W) AD(       ) 1
 JV0947  NGVD 29              46.38   (m)          152.2    (f) LEVELING    3  
 JV0947  NGVD 29 (11/26/84)   46.384  (m)          152.18   (f) ADJUSTED    2 0
 JV0947
 JV0947.Superseded values are not recommended for survey control.
 JV0947
 JV0947.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0947.See file dsdata.pdf to determine how the superseded data were derived.
 JV0947
 JV0947_MARKER: DS = TRIANGULATION STATION DISK
 JV0947_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0947_STAMPING: FILBERT 1933
 JV0947_MARK LOGO: CGS
 JV0947_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0947+STABILITY: SURFACE MOTION
 JV0947
 JV0947  HISTORY     - Date     Condition        Report By
 JV0947  HISTORY     - 1933     MONUMENTED       CGS
 JV0947  HISTORY     - 1940     GOOD             PWPCO
 JV0947  HISTORY     - 1940     GOOD             CGS
 JV0947  HISTORY     - 1943     GOOD             CGS
 JV0947  HISTORY     - 1952     GOOD             CGS
 JV0947  HISTORY     - 1957     GOOD             CGS
 JV0947  HISTORY     - 1960     GOOD             CGS
 JV0947  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV0947  HISTORY     - 1984     MARK NOT FOUND   USPSQD
 JV0947  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV0947
 JV0947                          STATION DESCRIPTION
 JV0947
 JV0947'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV0947'STATION IS ABOUT 5 MILES SE OF BALTIMORE BUSINESS SECTION, 1 MILE
 JV0947'SE OF BROOKLYN, ON THE W SIDE OF CURTIS BAY AND CURTIS CREEK, ON
 JV0947'PROPERTY OWNED BY THE BALTIMORE WATER WORKS COMMISSION.  IT IS
 JV0947'ON TOP OF THE HILL IN SOUTH BALTIMORE ON WHICH IS LOCATED A LARGE
 JV0947'BRICK RESERVOIR AND A METAL STANDPIPE, ABOUT 300 YARDS W OF
 JV0947'PENINGTON STREET ON LINE WITH THE CENTER LINE OF FILBERT
 JV0947'STREET.  IT IS IN AN UNCULTIVATED FIELD, 79.1 FEET NW OF THE NW
 JV0947'SIDE OF THE RESERVOIR, 50 FEET WSW OF A CURVE IN THE DIRT
 JV0947'ROAD, AND 23.5 FEET WSW OF A 2-INCH CAST-IRON PIPE THAT
 JV0947'PROTRUDES FROM THE GROUND AT AN ANGLE ABOUT 1 FOOT.  THE
 JV0947'STATION MARK IS ABOUT 4 INCHES ABOVE THE GROUND.
 JV0947'
 JV0947'PROSPECT IS A STATION OF THE BALTIMORE PLANS AND SURVEYS, AND
 JV0947'CONSISTS OF A CAST-IRON PIPE WITH A CAP MARKED NO. 128 FLUSH WITH
 JV0947'THE GROUND.  IT IS AN UNCULTIVATED FIELD, NNE OF THE STATION,
 JV0947'ABOUT 75 YARDS E (W) OF THE DIRT ROAD.  USED FOR AN AZIMUTH MARK.
 JV0947'
 JV0947'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE
 JV0947'DISKS SET IN CONCRETE.
 JV0947'
 JV0947'REFERENCE MARK NO.1 IS N OF THE STATION, 43 YARDS N OF THE CURVE
 JV0947'IN THE ROAD, AND 3 YARDS W OF THE CENTER LINE OF THE DIRT ROAD.
 JV0947'
 JV0947'REFERENCE MARK NO.2 IS SE OF THE STATION IN THE FOOTING OF THE
 JV0947'RESERVOIR ON THE W SIDE, MIDWAY BETWEEN TWO ARTIFICIAL WINDOWS.
 JV0947'
 JV0947'THE OBJECTS LISTED ABOVE ARE ALL VISIBLE FROM THE GROUND.  THE
 JV0947'WOODEN TANK IS THE TANK OF THE U.S. ARMY ORDINANCE PLANT.  THE
 JV0947'SPIRE, WITH THE RED LIGHT, IS IN THE CITY OF BALTIMORE, AND IS ON
 JV0947'THE BROMO SELTZER BUILDING.
 JV0947'
 JV0947'FOUR POSITIONS OF THE CIRCLE WERE OBSERVED ON THIS RED LIGHT,
 JV0947'THE AVIATION BEACON, AND PROSPECT.  THE STACK IS VISIBLE STRAIGHT
 JV0947'DOWN FILBERT STREET.
 JV0947'
 JV0947'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV0947
 JV0947                          STATION RECOVERY (1940)
 JV0947
 JV0947'RECOVERY NOTE BY PENNSYLVANIA WATER AND POWER COMPANY 1940
 JV0947'FOUND STATION WITHOUT DIFFICULTY FROM MIMEO. DIRECTIONS.  ALTHOUGH,
 JV0947'WEEDS HAVE SINCE OVERGROWN THE MONUMENT.  THE EASIEST WAY IS TO
 JV0947'LOOK FIRST FOR REFERENCE MARK NO.2 ON FOOTING OF TANK, AND THEN
 JV0947'FOLLOW THE ARROW 82.05 FEET.  COULD NOT FIND PROSPECT WITHOUT
 JV0947'SETTING UP INSTRUMENT AND HAVING HELP TO LINE ME UP.  AS, FIELD
 JV0947'HAS BECOME BADLY OVERGROWN WITH BUSHES.  SUGGEST THAT IN THE
 JV0947'FUTURE REFERENCE MARKS (LIKE NO.2) BE SET OUT A LITTLE FARTHER
 JV0947'FROM VERTICAL WALL IN ORDER THAT AN INSTRUMENT CAN BE SET UP
 JV0947'OVER THEM.  THE RED LIGHT ON THE BROMO SELTZER BUILDING HAS
 JV0947'SINCE BEEN REMOVED.  A PROMINENT OBJECT VISIBLE FROM THE GROUND
 JV0947'AT THE STATION IS THE FLAGPOLE AT FORT MC HENRY.
 JV0947
 JV0947                          STATION RECOVERY (1940)
 JV0947
 JV0947'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV0947'STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED AND IN
 JV0947'GOOD CONDITION.
 JV0947'
 JV0947'THE AZIMUTH MARK (STATION PROSPECT) WAS NOT RECOVERED.  BUT, IT
 JV0947'WAS NOT PROVEN TO BE LOST.
 JV0947
 JV0947                          STATION RECOVERY (1943)
 JV0947
 JV0947'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (CFM)
 JV0947'REFERENCE MARK NO. 1 WAS DESTROYED DURING EXCAVATIONS FOR A SEWER
 JV0947'FOR NEW HOUSES.  IT WAS NO LONGER VISIBLE FROM THE STATION, HOUSES
 JV0947'HAVING BEEN BUILT IN THE WAY.  A REFERENCE MARK NO. 3, NOT
 JV0947'DESCRIBED IN THE ORIGINAL DESCRIPTION, WAS EVIDENTLY SET FOR AN
 JV0947'AZIMUTH MARK AND NOT USED.  THIS MARK WAS REMOVED ALSO.
 JV0947'
 JV0947'THE STATION MARK IS NOT IN THE HOUSING PROJECT AREA AND IS
 JV0947'UNDISTURBED.  WITH BUILDING OF THE HOUSING PROJECT, WHICH IS OF
 JV0947'TEMPORARY CONSTRUCTION, THERE IS ONLY A VERY LIMITED OUTLOOK TO
 JV0947'ANY DISTANT OBJECTS EXCEPT EASTWARD ALONG FILBERT STREET.  THE
 JV0947'STACK OF THE PAN AMERICAN OIL IS OBSCURED BY AN ELECTRIC LIGHT
 JV0947'POLE.  REFERENCE MARK NO. 2 IS SET IN THE CONCRETE FOOTING OF A
 JV0947'LARGE BRICK RESERVOIR, THE CURTIS BAY RESERVOIR.
 JV0947'
 JV0947'MR. ROBERT SUTTON, WHO IS RUNNING THE PROPERTY SURVEY OBSERVED
 JV0947'ANGLES TO THREE NEARBY CORNERS OF THE PROJECT BOUNDARY, WHICH
 JV0947'TOGETHER WITH SOME CHAINED DISTANCES WILL TIE IN TWO OF
 JV0947'THEM.  AT PRESENT THESE ARE WOODEN HUBS BUT ARE TO BE REPLACED
 JV0947'WITH CONCRETE MONUMENTS IN WHICH I SHALL HAVE REFERENCE MARKS
 JV0947'PLACED.
 JV0947
 JV0947                          STATION RECOVERY (1952)
 JV0947
 JV0947'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (CFM)
 JV0947'LETTER OF MR. CARROLL F. MERRIAM, DATED OCT. 13, 1952--
 JV0947'
 JV0947'FOUND STATION STILL UNDISTURBED IN A SMALL PATCH OF NEARLY
 JV0947'WAIST HIGH WEEDS.  HUBS AND TACKS HAVE BEEN REPLACED BY REFERENCE
 JV0947'MARKS 4 AND 5 IN CONCRETE MONUMENTS FLUSH WITH THE PRESENT SURFACE
 JV0947'OF THE GROUND.  I DID NOT CHECK THE DISTANCES.
 JV0947
 JV0947                          STATION RECOVERY (1957)
 JV0947
 JV0947'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV0947'THE STATION, REFERENCE MARKS 2 AND 5 WERE RECOVERED AS DESCRIBED
 JV0947'AND ALL MARKS WERE FOUND TO BE IN GOOD CONDITION.  THE DISTANCE
 JV0947'AND DIRECTION TO REFERENCE MARKS 2 AND 5 WERE CHECKED AND WERE
 JV0947'FOUND TO BE CORRECT.
 JV0947'
 JV0947'ORIGINAL DESCRIPTION IS ADEQUATE.
 JV0947'
 JV0947'1957 OBSERVATIONS TAKEN FROM AN 87-FT. TOWER.
 JV0947
 JV0947                          STATION RECOVERY (1960)
 JV0947
 JV0947'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960
 JV0947'AT BROOKLYN.
 JV0947'AT BROOKLYN, ABOUT 0.25 MILE WEST ALONG FILBERT STREET FROM
 JV0947'BALTIMORE FIRE STATION NO. 57, ON TOP OF A HILL NEAR THE SITE OF
 JV0947'A LARGE BRICK WATER TANK, 3 YARDS SOUTH OF THE EXTENDED CENTER
 JV0947'LINE OF FILBERT STREET, 89 FEET NORTHWEST OF THE NORTHWEST SIDE
 JV0947'OF TANK, AND SET IN TOP OF A CONCRETE POST PROJECTING 2 INCHES.
 JV0947
 JV0947                          STATION RECOVERY (1975)
 JV0947
 JV0947'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV0947'SEARCH WAS MADE TO NO AVAIL, STATION FILBERT APPEARS TO BE IN
 JV0947'THE STREET THAT RUNS PAST THE CURTIS BAY WATER TANK.  NO SIGN
 JV0947'OF THE STATION COULD BE FOUND.  RM2 WAS FOUND AS DESCRIBED.
 JV0947
 JV0947                          STATION RECOVERY (1984)
 JV0947
 JV0947'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV0947'SEARCH WAS MADE FOR THE FILBERT STATION TO NO AVAIL, DESCRIPTION BY
 JV0947'GWJ DATED 1975 IS ACCURATE.
 JV0947
 JV0947                          STATION RECOVERY (1994)
 JV0947
 JV0947'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV0947'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0946 ***********************************************************************
 JV0946  DESIGNATION -  FILBERT RM 2
 JV0946  PID         -  JV0946
 JV0946  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0946  COUNTRY     -  US
 JV0946  USGS QUAD   -  CURTIS BAY (2016)
 JV0946
 JV0946                         *CURRENT SURVEY CONTROL
 JV0946  ______________________________________________________________________
 JV0946* NAD 83(1986) POSITION- 39 13 29.40   (N) 076 35 34.53   (W)   HD_HELD1
 JV0946* NAVD 88 ORTHO HEIGHT -    45.856 (meters)      150.45  (feet) ADJUSTED
 JV0946  ______________________________________________________________________
 JV0946  GEOID HEIGHT    -        -32.862 (meters)                     GEOID18
 JV0946  DYNAMIC HEIGHT  -         45.832 (meters)      150.37  (feet) COMP
 JV0946  MODELED GRAVITY -    980,094.0   (mgal)                       NAVD 88
 JV0946
 JV0946  VERT ORDER      -  SECOND    CLASS 0
 JV0946
 JV0946.The horizontal coordinates were determined by differentially corrected
 JV0946.hand held GPS observations or other comparable positioning techniques
 JV0946.and have an estimated accuracy of +/- 3 meters.
 JV0946
 JV0946.The orthometric height was determined by differential leveling and
 JV0946.adjusted by the NATIONAL GEODETIC SURVEY
 JV0946.in June 1991.
 JV0946
 JV0946.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0946.GEOID18 height accuracy estimate available here.
 JV0946
 JV0946.Click photographs - Photos may exist for this station.
 JV0946
 JV0946.The dynamic height is computed by dividing the NAVD 88
 JV0946.geopotential number by the normal gravity value computed on the
 JV0946.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0946.degrees latitude (g = 980.6199 gals.).
 JV0946
 JV0946.The modeled gravity was interpolated from observed gravity values.
 JV0946
 JV0946;                    North         East    Units  Estimated Accuracy
 JV0946;SPC MD       -   173,044.0     435,150.3     MT  (+/- 3 meters HH1 GPS) 
 JV0946
 JV0946_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6249942935(NAD 83)
 JV0946
 JV0946                          SUPERSEDED SURVEY CONTROL
 JV0946
 JV0946  NGVD 29 (11/26/84)   46.096  (m)          151.23   (f) ADJUSTED    2 0
 JV0946
 JV0946.Superseded values are not recommended for survey control.
 JV0946
 JV0946.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0946.See file dsdata.pdf to determine how the superseded data were derived.
 JV0946
 JV0946_MARKER: DR = REFERENCE MARK DISK
 JV0946_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0946_SP_SET: WATER TANK BASE
 JV0946_STAMPING: FILBERT NO 2 1933
 JV0946_MARK LOGO: CGS
 JV0946_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0946
 JV0946  HISTORY     - Date     Condition        Report By
 JV0946  HISTORY     - 1933     MONUMENTED       CGS
 JV0946  HISTORY     - 1960     GOOD             CGS
 JV0946  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV0946
 JV0946                          STATION DESCRIPTION
 JV0946
 JV0946'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0946'AT BROOKLYN.
 JV0946'AT BROOKLYN, ABOUT 0.25 MILE WEST ALONG FILBERT STREET FROM
 JV0946'BALTIMORE FIRE STATION NO. 57, 82.3 FEET SOUTHEAST OF FILBERT
 JV0946'DESCRIBED, 134.5 FEET SOUTH OF R M 5, ON TOP OF THE CONCRETE BASE
 JV0946'SUPPORTING A LARGE WATER TANK, 0.4 FOOT WEST OF THE WEST SIDE OF
 JV0946'BRICK WALL OF TANK.
 JV0946
 JV0946                          STATION RECOVERY (1994)
 JV0946
 JV0946'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV0946'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0945 ***********************************************************************
 JV0945  DESIGNATION -  FILBERT RM 5
 JV0945  PID         -  JV0945
 JV0945  STATE/COUNTY-  MD/C OF BALTIMORE
 JV0945  COUNTRY     -  US
 JV0945  USGS QUAD   -  CURTIS BAY (2016)
 JV0945
 JV0945                         *CURRENT SURVEY CONTROL
 JV0945  ______________________________________________________________________
 JV0945* NAD 83(1986) POSITION- 39 13 30.40   (N) 076 35 34.50   (W)   HD_HELD1
 JV0945* NAVD 88 ORTHO HEIGHT -    45.853 (meters)      150.44  (feet) ADJUSTED
 JV0945  ______________________________________________________________________
 JV0945  GEOID HEIGHT    -        -32.862 (meters)                     GEOID18
 JV0945  DYNAMIC HEIGHT  -         45.828 (meters)      150.35  (feet) COMP
 JV0945  MODELED GRAVITY -    980,094.0   (mgal)                       NAVD 88
 JV0945
 JV0945  VERT ORDER      -  SECOND    CLASS 0
 JV0945
 JV0945.The horizontal coordinates were determined by differentially corrected
 JV0945.hand held GPS observations or other comparable positioning techniques
 JV0945.and have an estimated accuracy of +/- 3 meters.
 JV0945
 JV0945.The orthometric height was determined by differential leveling and
 JV0945.adjusted by the NATIONAL GEODETIC SURVEY
 JV0945.in June 1991.
 JV0945
 JV0945.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0945.GEOID18 height accuracy estimate available here.
 JV0945
 JV0945.Click photographs - Photos may exist for this station.
 JV0945
 JV0945.The dynamic height is computed by dividing the NAVD 88
 JV0945.geopotential number by the normal gravity value computed on the
 JV0945.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0945.degrees latitude (g = 980.6199 gals.).
 JV0945
 JV0945.The modeled gravity was interpolated from observed gravity values.
 JV0945
 JV0945;                    North         East    Units  Estimated Accuracy
 JV0945;SPC MD       -   173,074.9     435,150.9     MT  (+/- 3 meters HH1 GPS) 
 JV0945
 JV0945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6250142966(NAD 83)
 JV0945
 JV0945                          SUPERSEDED SURVEY CONTROL
 JV0945
 JV0945  NGVD 29 (11/26/84)   46.093  (m)          151.22   (f) ADJUSTED    2 0
 JV0945
 JV0945.Superseded values are not recommended for survey control.
 JV0945
 JV0945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0945.See file dsdata.pdf to determine how the superseded data were derived.
 JV0945
 JV0945_MARKER: DR = REFERENCE MARK DISK
 JV0945_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0945_STAMPING: FILBERT NO 5 1933
 JV0945_MARK LOGO: CGS
 JV0945_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0945+STABILITY: SURFACE MOTION
 JV0945
 JV0945  HISTORY     - Date     Condition        Report By
 JV0945  HISTORY     - 1933     MONUMENTED       CGS
 JV0945  HISTORY     - 1960     GOOD             CGS
 JV0945  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV0945
 JV0945                          STATION DESCRIPTION
 JV0945
 JV0945'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0945'AT BROOKLYN.
 JV0945'AT BROOKLYN, ABOUT 0.25 MILE WEST ALONG FILBERT STREET FROM
 JV0945'BALTIMORE FIRE STATION NO. 57, 68.9 FEET NORTH OF THE NORTH SIDE
 JV0945'OF A LARGE CIRCULAR BRICK WATER TANK, 8 YARDS NORTH OF THE EXTENDED
 JV0945'CENTER LINE OF FILBERT STREET, 82.3 FEET NORTHEAST OF FILBERT
 JV0945'TRIANGULATION STATION, 134.5 FEET NORTH OF R M 2, AND SET IN TOP
 JV0945'OF A CONCRETE POST PROJECTING 1 INCH.
 JV0945
 JV0945                          STATION RECOVERY (1994)
 JV0945
 JV0945'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV0945'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5689 ***********************************************************************
 JV5689  DESIGNATION -  FILL
 JV5689  PID         -  JV5689
 JV5689  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5689  COUNTRY     -  US
 JV5689  USGS QUAD   -  CURTIS BAY (2016)
 JV5689
 JV5689                         *CURRENT SURVEY CONTROL
 JV5689  ______________________________________________________________________
 JV5689* NAD 83(1991) POSITION- 39 14 58.16834(N) 076 36 49.20156(W)   ADJUSTED
 JV5689* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 JV5689  ______________________________________________________________________
 JV5689  GEOID HEIGHT    -        -32.785 (meters)                     GEOID18
 JV5689  LAPLACE CORR    -         -5.34  (seconds)                    DEFLEC18
 JV5689  HORZ ORDER      -  THIRD
 JV5689
 JV5689.The horizontal coordinates were established by classical geodetic methods
 JV5689.and adjusted by the National Geodetic Survey in January 1992.
 JV5689
 JV5689.The orthometric height was scaled from a topographic map.
 JV5689
 JV5689.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5689.GEOID18 height accuracy estimate available here.
 JV5689
 JV5689.Click photographs - Photos may exist for this station.
 JV5689
 JV5689.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5689
 JV5689. The following values were computed from the NAD 83(1991) position.
 JV5689
 JV5689;                    North         East     Units Scale Factor Converg.
 JV5689;SPC MD       -   175,773.646   433,347.717   MT  0.99997107   +0 14 32.9
 JV5689;SPC MD       -   576,684.04  1,421,741.63   sFT  0.99997107   +0 14 32.9
 JV5689;UTM  18      - 4,345,704.256   360,758.066   MT  0.99983873   -1 01 16.1
 JV5689
 JV5689!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5689!SPC MD       -   1.00000440  x   0.99997107  =   0.99997547
 JV5689!UTM  18      -   1.00000440  x   0.99983873  =   0.99984313
 JV5689
 JV5689:                Primary Azimuth Mark                     Grid Az
 JV5689:SPC MD       -  WESTERN                                  029 13 14.2
 JV5689:UTM  18      -  WESTERN                                  030 29 03.2
 JV5689
 JV5689_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6075845704(NAD 83)
 JV5689
 JV5689|---------------------------------------------------------------------|
 JV5689| PID    Reference Object                     Distance      Geod. Az  |
 JV5689|                                                           dddmmss.s |
 JV5689| JV5544 WESTERN                             APPROX. 2.1 KM 0292747.1 |
 JV5689| CA9420 FILL RM 1                            29.492 METERS 06948     |
 JV5689|---------------------------------------------------------------------|
 JV5689
 JV5689                          SUPERSEDED SURVEY CONTROL
 JV5689
 JV5689  NAD 83(1986)-  39 14 58.16484(N)    076 36 49.21063(W) AD(       ) 3
 JV5689  NAD 27      -  39 14 57.78100(N)    076 36 50.33000(W) AD(       ) 3
 JV5689
 JV5689.Superseded values are not recommended for survey control.
 JV5689
 JV5689.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5689.See file dsdata.pdf to determine how the superseded data were derived.
 JV5689
 JV5689_MARKER: DS = TRIANGULATION STATION DISK
 JV5689_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5689_STAMPING: FILL 1934
 JV5689_MARK LOGO: CGS
 JV5689_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5689+STABILITY: SURFACE MOTION
 JV5689
 JV5689  HISTORY     - Date     Condition        Report By
 JV5689  HISTORY     - 1934     MONUMENTED       CGS
 JV5689
 JV5689                          STATION DESCRIPTION
 JV5689
 JV5689'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5689'ON THE NORTHERN SIDE OF THE PATAPSCO RIVER, ON THE WESTERN SIDE OF
 JV5689'THE ROAD TO ANNAPOLIS, 1/4 MILE NW OF BRIDGE OVER THE PATAPSCO
 JV5689'RIVER, IN A BRUSH-COVERED VACANT LOT, 55 FEET FROM THE CENTER OF
 JV5689'ROAD.
 JV5689'
 JV5689'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5689'CONCRETE.
 JV5689'
 JV5689'HEIGHT OF LIGHT ABOVE STATION MARK 3 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7211 ***********************************************************************
 JV7211  DESIGNATION -  FINGER
 JV7211  PID         -  JV7211
 JV7211  STATE/COUNTY-  MD/FREDERICK
 JV7211  COUNTRY     -  US
 JV7211  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV7211
 JV7211                         *CURRENT SURVEY CONTROL
 JV7211  ______________________________________________________________________
 JV7211* NAD 83(2011) POSITION- 39 19 45.15277(N) 077 22 57.95814(W)   ADJUSTED
 JV7211* NAD 83(2011) ELLIP HT-   112.816 (meters)        (06/27/12)   ADJUSTED
 JV7211* NAD 83(2011) EPOCH   -  2010.00
 JV7211* NAVD 88 ORTHO HEIGHT -   145.3   (meters)      477.    (feet) GPS OBS
 JV7211  ______________________________________________________________________
 JV7211  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7211  GEOID HEIGHT    -        -32.780 (meters)                     GEOID93
 JV7211  GEOID HEIGHT    -        -32.444 (meters)                     GEOID18
 JV7211  NAD 83(2011) X  -  1,079,150.302 (meters)                     COMP
 JV7211  NAD 83(2011) Y  - -4,821,028.932 (meters)                     COMP
 JV7211  NAD 83(2011) Z  -  4,020,725.684 (meters)                     COMP
 JV7211  LAPLACE CORR    -          6.00  (seconds)                    DEFLEC18
 JV7211
 JV7211  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7211  Standards:
 JV7211         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7211            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7211  -------------------------------------------------------------------
 JV7211  NETWORK    1.18   1.71           0.47   0.49   0.87     -0.10897142
 JV7211  -------------------------------------------------------------------
 JV7211  Click here for local accuracies and other accuracy information.
 JV7211
 JV7211.The horizontal coordinates were established by GPS observations
 JV7211.and adjusted by the National Geodetic Survey in June 2012.
 JV7211
 JV7211.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7211.been affixed to the stable North American tectonic plate. See 
 JV7211.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7211
 JV7211.The horizontal coordinates are valid at the epoch date displayed above
 JV7211.which is a decimal equivalence of Year/Month/Day.
 JV7211
 JV7211.The orthometric height was determined by GPS observations and a
 JV7211.high-resolution geoid model.
 JV7211
 JV7211.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7211.GEOID18 height accuracy estimate available here.
 JV7211
 JV7211.Click photographs - Photos may exist for this station.
 JV7211
 JV7211.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7211
 JV7211.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7211
 JV7211.The ellipsoidal height was determined by GPS observations
 JV7211.and is referenced to NAD 83.
 JV7211
 JV7211. The following values were computed from the NAD 83(2011) position.
 JV7211
 JV7211;                    North         East     Units Scale Factor Converg.
 JV7211;SPC MD       -   184,622.419   366,997.266   MT  0.99998110   -0 14 24.9
 JV7211;SPC MD       -   605,715.39  1,204,056.86   sFT  0.99998110   -0 14 24.9
 JV7211;UTM  18      - 4,356,017.760   294,619.863   MT  1.00011938   -1 30 38.4
 JV7211
 JV7211!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7211!SPC MD       -   0.99998230  x   0.99998110  =   0.99996340
 JV7211!UTM  18      -   0.99998230  x   1.00011938  =   1.00010168
 JV7211
 JV7211_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9461956017(NAD 83)
 JV7211
 JV7211                          SUPERSEDED SURVEY CONTROL
 JV7211
 JV7211  NAD 83(2007)-  39 19 45.15294(N)    077 22 57.95884(W) AD(2002.00) 0
 JV7211  ELLIP H (02/10/07)  112.839  (m)                       GP(2002.00)    
 JV7211  ELLIP H (08/30/02)  112.837  (m)                       GP(       ) 4 2
 JV7211  NAD 83(1991)-  39 19 45.15307(N)    077 22 57.95894(W) AD(       ) 1
 JV7211  ELLIP H (02/09/94)  112.786  (m)                       GP(       ) 4 1
 JV7211
 JV7211.Superseded values are not recommended for survey control.
 JV7211
 JV7211.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7211.See file dsdata.pdf to determine how the superseded data were derived.
 JV7211
 JV7211_MARKER: DD = SURVEY DISK
 JV7211_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7211_STAMPING: FINGER 1993
 JV7211_MARK LOGO: MD-021
 JV7211_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7211_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7211+STABILITY: SURFACE MOTION
 JV7211_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV7211+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2002
 JV7211
 JV7211  HISTORY     - Date     Condition        Report By
 JV7211  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7211  HISTORY     - 20021031 GOOD             POWELL
 JV7211  HISTORY     - 20130626 POOR             GPSSS
 JV7211  HISTORY     - 20230725 MARK NOT FOUND   WTBALL
 JV7211
 JV7211                          STATION DESCRIPTION
 JV7211
 JV7211'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7211'FROM FREDERICK, MD, GO SOUTH ON I-270 TO THE MD RTE 80 EXIT. TAKE RTE
 JV7211'80 (FINGERBOARD ROAD) WEST 1.5 MILES (2.4 KM) TO THE INTERSECTION
 JV7211'WITH PARK MILLS ROAD. STATION IS NORTHWEST OF THE INTERSECTION, 45
 JV7211'FEET (13.7 M) SOUTHWEST OF A MACADAM DRIVEWAY AND 40 FEET (12.2 M)
 JV7211'SOUTHEAST OF POTOMAC EDISON POWER POLE NO. F20707. STATION IS A BRASS
 JV7211'DISK SET IN THE TOP OF AN 8 INCH CONCRETE MONUMENT SET FLUSH WITH THE
 JV7211'GROUND.
 JV7211
 JV7211                          STATION RECOVERY (2002)
 JV7211
 JV7211'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7211'RECOVERED IN GOOD CONDITION.
 JV7211
 JV7211                          STATION RECOVERY (2013)
 JV7211
 JV7211'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 JV7211'RECOVERED BY MIKE BUTLER AND DEWEY LILLY OF NORTHERN BAY LAND
 JV7211'PLANNING, ENGINEERING AND SURVEYING CORP.  THE ROAD BANK HAS BEEN
 JV7211'GRADED.
 JV7211
 JV7211                          STATION RECOVERY (2023)
 JV7211
 JV7211'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2023 (JMB)
 JV7211'A SEARCH WAS CONDUCTED AND THE MARK WAS NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6631 ***********************************************************************
 HV6631  DESIGNATION -  FINISH MSFC 1910
 HV6631  PID         -  HV6631
 HV6631  STATE/COUNTY-  MD/DORCHESTER
 HV6631  COUNTRY     -  US
 HV6631  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV6631
 HV6631                         *CURRENT SURVEY CONTROL
 HV6631  ______________________________________________________________________
 HV6631* NAD 83(1991) POSITION- 38 27 57.76069(N) 076 17 11.96849(W)   ADJUSTED
 HV6631* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6631  ______________________________________________________________________
 HV6631  GEOID HEIGHT    -        -34.653 (meters)                     GEOID18
 HV6631  LAPLACE CORR    -         -5.44  (seconds)                    DEFLEC18
 HV6631  HORZ ORDER      -  THIRD
 HV6631
 HV6631.The horizontal coordinates were established by classical geodetic methods
 HV6631.and adjusted by the National Geodetic Survey in January 1992.
 HV6631
 HV6631.The orthometric height was scaled from a topographic map.
 HV6631
 HV6631.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6631.GEOID18 height accuracy estimate available here.
 HV6631
 HV6631.Click photographs - Photos may exist for this station.
 HV6631
 HV6631.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6631
 HV6631. The following values were computed from the NAD 83(1991) position.
 HV6631
 HV6631;                    North         East     Units Scale Factor Converg.
 HV6631;SPC MD       -    88,977.421   462,253.832   MT  0.99997526   +0 26 51.8
 HV6631;SPC MD       -   291,920.09  1,516,577.78   sFT  0.99997526   +0 26 51.8
 HV6631;UTM  18      - 4,258,309.774   387,751.359   MT  0.99975516   -0 48 01.6
 HV6631
 HV6631!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6631!SPC MD       -   1.00000547  x   0.99997526  =   0.99998073
 HV6631!UTM  18      -   1.00000547  x   0.99975516  =   0.99976063
 HV6631
 HV6631:                Primary Azimuth Mark                     Grid Az
 HV6631:SPC MD       -  TAYLOR MSFC 1910                         266 51 25.8
 HV6631:UTM  18      -  TAYLOR MSFC 1910                         268 06 19.2
 HV6631
 HV6631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8775158309(NAD 83)
 HV6631
 HV6631|---------------------------------------------------------------------|
 HV6631| PID    Reference Object                     Distance      Geod. Az  |
 HV6631|                                                           dddmmss.s |
 HV6631| HV6632 TAYLOR MSFC 1910                    APPROX. 0.5 KM 2671817.6 |
 HV6631|---------------------------------------------------------------------|
 HV6631
 HV6631                          SUPERSEDED SURVEY CONTROL
 HV6631
 HV6631  NAD 83(1986)-  38 27 57.75893(N)    076 17 11.98438(W) AD(       ) 3
 HV6631  NAD 27      -  38 27 57.33900(N)    076 17 13.14400(W) AD(       ) 3
 HV6631  USSD        -  38 27 57.69200(N)    076 17 12.93400(W) AD(       ) 3
 HV6631
 HV6631.Superseded values are not recommended for survey control.
 HV6631
 HV6631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6631.See file dsdata.pdf to determine how the superseded data were derived.
 HV6631
 HV6631_MARKER: H = DRILL HOLE
 HV6631_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6631_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6631+STABILITY: SURFACE MOTION
 HV6631
 HV6631  HISTORY     - Date     Condition        Report By
 HV6631  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6631  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6631
 HV6631                          STATION DESCRIPTION
 HV6631
 HV6631'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6631'ON THE EASTERN SHORE OF SLAUGHTER CREEK, ABOUT 3/8 MILE SE OF
 HV6631'SLAUGHTER CREEK BRIDGE, IN CORNER OF CULTIVATED FIELD, ABOUT 50
 HV6631'YARDS E OF SHORE, 12 YARDS E OF WIRE FENCE BETWEEN FIELD AND
 HV6631'MARSH, 14 YARDS N OF WIRE FENCE BETWEEN FIELD AND WOODS, AND 17
 HV6631'YARDS NE OF FENCE CORNER.  STATION IS MARKED BY A HOLE IN THE
 HV6631'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6631'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV6631'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HV6631'ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE CENTER
 HV6631'OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW
 HV6631'THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV6631'POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 8-INCH
 HV6631'PINE TREE, 19.55 METERS (64.1 FEET), S 21 DEG 57 MIN W.  TALLER
 HV6631'STACK OF CANNING HOUSE AT TAYLOR ISLAND, 1/2 MILE, N 71 DEG 32
 HV6631'MIN W.  NEAR PEAK OF LARGE DWELLING AT TAYLOR ISLAND, 1/2 MILE,
 HV6631'N 63 DEG 33 MIN W.  LEFT CHIMNEY OF HOUSE NEAREST SLAUGHTER CREEK
 HV6631'BRIDGE, 1/2 MILE, N 56 DEG 00 MIN W.  NEAR PEAK OF TAYLOR
 HV6631'ISLAND WHARF HOUSE, 3/8 MILE, N 42 DEG 45 MIN W.  CENTER OF DRAW OF
 HV6631'SLAUGHTER CREEK BRIDGE, 3/8 MILE, N 41 DEG 42 MIN W.  NEAR PEAK
 HV6631'OF OLD CANNING HOUSE, 3/8 MILE, N 10 DEG 32 MIN W.  NEAR PEAK OF
 HV6631'BARN, 5/8 MILE, N 12 DEG 49 MIN E.  NAIL IN BLAZE IN 8-INCH TREE,
 HV6631'20.18 METERS (66.2 FEET), S 46 DEG 46 MIN E.  NAIL IN BLAZE
 HV6631'IN 12-INCH PINE TREE, 16.15 METERS (53.0 FEET), S 26 DEG
 HV6631'46 MIN E.
 HV6631
 HV6631                          STATION RECOVERY (1942)
 HV6631
 HV6631'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6631'THE AREA IS WHICH THIS STATION IS LOCATED IS NOW UNDER
 HV6631'CULTIVATION.  EVIDENTLY THE MONUMENT HAS BEEN PLOUGHED UP UNDER
 HV6631'FARMING OPERATIONS.  IT IS RECOMMENDED THAT THIS STATION BE
 HV6631'CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5442 ***********************************************************************
 JV5442  DESIGNATION -  FINLAY 1844
 JV5442  PID         -  JV5442
 JV5442  STATE/COUNTY-  MD/BALTIMORE
 JV5442  COUNTRY     -  US
 JV5442  USGS QUAD   -  TOWSON (2016)
 JV5442
 JV5442                         *CURRENT SURVEY CONTROL
 JV5442  ______________________________________________________________________
 JV5442* NAD 83(1991) POSITION- 39 24 28.03181(N) 076 31 27.51912(W)   ADJUSTED
 JV5442* NAVD 88 ORTHO HEIGHT -   149.8   (meters)      491.    (feet) VERTCON3
 JV5442  ______________________________________________________________________
 JV5442  GEOID HEIGHT    -        -32.737 (meters)                     GEOID18
 JV5442  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 JV5442  HORZ ORDER      -  FIRST
 JV5442
 JV5442.The horizontal coordinates were established by classical geodetic methods
 JV5442.and adjusted by the National Geodetic Survey in January 1992.
 JV5442
 JV5442.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5442.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5442
 JV5442.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5442.GEOID18 height accuracy estimate available here.
 JV5442
 JV5442.Click photographs - Photos may exist for this station.
 JV5442
 JV5442.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5442
 JV5442. The following values were computed from the NAD 83(1991) position.
 JV5442
 JV5442;                    North         East     Units Scale Factor Converg.
 JV5442;SPC MD       -   193,383.731   440,969.185   MT  0.99999289   +0 17 54.8
 JV5442;SPC MD       -   634,459.79  1,446,746.40   sFT  0.99999289   +0 17 54.8
 JV5442;UTM  18      - 4,363,139.067   368,765.205   MT  0.99981205   -0 58 04.2
 JV5442
 JV5442!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5442!SPC MD       -   0.99998164  x   0.99999289  =   0.99997453
 JV5442!UTM  18      -   0.99998164  x   0.99981205  =   0.99979369
 JV5442
 JV5442:                Primary Azimuth Mark                     Grid Az
 JV5442:SPC MD       -  OSBORNES RUIN 1844                       072 40 32.5
 JV5442:UTM  18      -  OSBORNES RUIN 1844                       073 56 31.5
 JV5442
 JV5442_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6876563139(NAD 83)
 JV5442
 JV5442|---------------------------------------------------------------------|
 JV5442| PID    Reference Object                     Distance      Geod. Az  |
 JV5442|                                                           dddmmss.s |
 JV5442| JV5309 OSBORNES RUIN 1844                  APPROX.21.9 KM 0725827.3 |
 JV5442|---------------------------------------------------------------------|
 JV5442
 JV5442                          SUPERSEDED SURVEY CONTROL
 JV5442
 JV5442  NAD 83(1986)-  39 24 28.02733(N)    076 31 27.52674(W) AD(       ) 1
 JV5442  NAD 27      -  39 24 27.64100(N)    076 31 28.65300(W) AD(       ) 1
 JV5442  USBS        -  39 24 24.76000(N)    076 31 09.65000(W) AD(       ) 3
 JV5442  USSD        -  39 24 28.00200(N)    076 31 28.51500(W) AD(       ) 3
 JV5442  NGVD 29 (07/19/86)  150.0    (m)          492.     (f) VERT ANG       
 JV5442
 JV5442.Superseded values are not recommended for survey control.
 JV5442
 JV5442.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5442.See file dsdata.pdf to determine how the superseded data were derived.
 JV5442
 JV5442
 JV5442  HISTORY     - Date     Condition        Report By
 JV5442  HISTORY     - 1844     MONUMENTED       COASUR
 JV5442  HISTORY     - 1896     SEE DESCRIPTION  CGS
 JV5442  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5442  HISTORY     - 1938     SEE DESCRIPTION  CGS
 JV5442  HISTORY     - 1957     MARK NOT FOUND   CGS
 JV5442
 JV5442                          STATION DESCRIPTION
 JV5442
 JV5442'DESCRIBED BY COAST AND GEODETIC SURVEY 1896
 JV5442'ABOUT 9 MILES NORTHEASTERLY FROM BALTIMORE, 300 FEET E OF THE OLD
 JV5442'HARFORD ROAD, 3/4 MILE W OF THE HARFORD TURNPIKE, ON CUB HILL, ON
 JV5442'THE OLD FINLAY FARM, NOW THE PROPERTY OF THEODORE FASTIE.  THE
 JV5442'NE CORNER OF AN OLD LOG HOUSE, FORMERLY A SCHOOLHOUSE BUT NOW A
 JV5442'BLACKSMITH SHOP, IS 253.71 FEET FROM THE STATION S 47
 JV5442'DEG 06 MIN E.  THE BEARING OF THE E GABLE OF STONE BARN ON THE
 JV5442'FASTIE PLACE IS N 9 DEG 28 MIN E.  AND A LARGE CHERRY TREE IS
 JV5442'126.85 FEET FROM THE STATION S 22 DEG 46 MIN E.  IN 1896
 JV5442'THE STATION WAS RE-MARKED AS FOLLOWS--A GLAZED DRAIN TILE, 4
 JV5442'INCHES IN DIAMETER AND 30 INCHES LONG, WAS SUNK IN THE
 JV5442'GROUND SO THAT ITS UPPER END WAS 3 FEET BELOW THE SURFACE OF
 JV5442'THE GROUND.  IT WAS SET IN CEMENT AND GRAVEL AND THE CENTER
 JV5442'OF THE STATION MARKED BY A 60D NAIL.  ABOVE THIS WAS PLACED
 JV5442'A CHESTNUT POST, ITS TOP EVEN WITH THE SURFACE OF THE GROUND,
 JV5442'WITH A 40D NAIL MARKING THE CENTER.
 JV5442
 JV5442                          STATION RECOVERY (1933)
 JV5442
 JV5442'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (ERM)
 JV5442'ONLY ONE MEASUREMENT NOW REMAINS, VIZ., THAT TO THE CORNER OF THE
 JV5442'OLD LOG BLACKSMITHS SHOP.  THE SURFACE MARK SET IN 1896 HAS LONG
 JV5442'SINCE GONE, THE FIELD BEING REGULARLY IN CULTIVATION.  THE PRESENT
 JV5442'OWNERS DO NOT KNOW THE LOCATION OF THE OLD STATION, AND DO NOT
 JV5442'ENCOURAGE ANY OPERATION TOWARDS THE RECOVERY OF IT UNLESS THEY
 JV5442'ARE PAID.  SOME EFFORT WAS MADE TO RECOVER THE STATION BY
 JV5442'PRODDING WITH STEEL RODS, BUT THE GROUND IS OF CLAY AND
 JV5442'FILLED WITH SMALL ROCKS.  SO IT APPEARS THAT THE ONLY WAY TO
 JV5442'RECOVER IT IS TO ESTABLISH A NEW ONE AND HAVE A DEFINITE
 JV5442'BEARING AND DISTANCE.
 JV5442
 JV5442                          STATION RECOVERY (1938)
 JV5442
 JV5442'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (CIA)
 JV5442'ALL REFERENCE POINTS EXCEPT THE BLACKSMITH SHOP ARE GONE.  SIGNS OF
 JV5442'THE RUINS OF THAT STILL REMAIN.  THE SURFACE MARK WAS GONE AND
 JV5442'THE UNDERGROUND MARK WHICH WAS RECOVERED WAS IN GOOD
 JV5442'CONDITION.  THE STATION WAS RECOVERED BY A MEASURED DISTANCE AND
 JV5442'DIRECTION FROM STATION FINLAY 2 (1934).  THE UNDERGROUND MARK IS
 JV5442'A GOOD 4 FEET BELOW THE SURFACE OF THE GROUND.  NO NEW SURFACE
 JV5442'MARK WAS ESTABLISHED BECAUSE OF THE NEW STATION FINLAY 2
 JV5442'(1934).  AN ACCURATE TIE WAS MADE TO THE LATTER STATION.
 JV5442
 JV5442                          STATION RECOVERY (1957)
 JV5442
 JV5442'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (WFD)
 JV5442'THE UNDERGROUND MARK RECOVERED IN 1938 HAS BEEN DESTROYED.  A
 JV5442'MEASURED DISTANCE AND DIRECTION FROM FINLAY 2, 1933 TO FINLAY,
 JV5442'1844 SHOWS THE LATTER BENEATH A NEW BRICK HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5441 ***********************************************************************
 JV5441  DESIGNATION -  FINLAY 3
 JV5441  PID         -  JV5441
 JV5441  STATE/COUNTY-  MD/BALTIMORE
 JV5441  COUNTRY     -  US
 JV5441  USGS QUAD   -  TOWSON (2016)
 JV5441
 JV5441                         *CURRENT SURVEY CONTROL
 JV5441  ______________________________________________________________________
 JV5441* NAD 83(2011) POSITION- 39 24 28.39614(N) 076 31 28.51361(W)   ADJUSTED
 JV5441* NAD 83(2011) ELLIP HT-   115.202 (meters)        (06/27/12)   ADJUSTED
 JV5441* NAD 83(2011) EPOCH   -  2010.00
 JV5441* NAVD 88 ORTHO HEIGHT -   147.8   (meters)      485.    (feet) VERTCON3
 JV5441  ______________________________________________________________________
 JV5441  GEOID HEIGHT    -        -32.737 (meters)                     GEOID18
 JV5441  NAD 83(2011) X  -  1,149,945.426 (meters)                     COMP
 JV5441  NAD 83(2011) Y  - -4,798,938.700 (meters)                     COMP
 JV5441  NAD 83(2011) Z  -  4,027,480.273 (meters)                     COMP
 JV5441  LAPLACE CORR    -         -3.89  (seconds)                    DEFLEC18
 JV5441
 JV5441  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV5441  Standards:
 JV5441         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV5441            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV5441  -------------------------------------------------------------------
 JV5441  NETWORK   24.62  17.70           9.86   8.72   9.03      0.74795572
 JV5441  -------------------------------------------------------------------
 JV5441  Click here for local accuracies and other accuracy information.
 JV5441
 JV5441.The horizontal coordinates were established by GPS observations
 JV5441.and adjusted by the National Geodetic Survey in June 2012.
 JV5441
 JV5441.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV5441.been affixed to the stable North American tectonic plate. See 
 JV5441.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV5441
 JV5441.The horizontal coordinates are valid at the epoch date displayed above
 JV5441.which is a decimal equivalence of Year/Month/Day.
 JV5441
 JV5441.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5441.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5441
 JV5441.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5441.GEOID18 height accuracy estimate available here.
 JV5441
 JV5441.Click photographs - Photos may exist for this station.
 JV5441
 JV5441.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV5441
 JV5441.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5441
 JV5441.The ellipsoidal height was determined by GPS observations
 JV5441.and is referenced to NAD 83.
 JV5441
 JV5441. The following values were computed from the NAD 83(2011) position.
 JV5441
 JV5441;                    North         East     Units Scale Factor Converg.
 JV5441;SPC MD       -   193,394.843   440,945.335   MT  0.99999290   +0 17 54.2
 JV5441;SPC MD       -   634,496.25  1,446,668.15   sFT  0.99999290   +0 17 54.2
 JV5441;UTM  18      - 4,363,150.701   368,741.610   MT  0.99981213   -0 58 04.8
 JV5441
 JV5441!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5441!SPC MD       -   0.99998193  x   0.99999290  =   0.99997483
 JV5441!UTM  18      -   0.99998193  x   0.99981213  =   0.99979406
 JV5441
 JV5441:                Primary Azimuth Mark                     Grid Az
 JV5441:SPC MD       -  CUB HILL FIRE TOWER                      032 04 30.2
 JV5441:UTM  18      -  CUB HILL FIRE TOWER                      033 20 29.2
 JV5441
 JV5441_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6874163150(NAD 83)
 JV5441
 JV5441|---------------------------------------------------------------------|
 JV5441| PID    Reference Object                     Distance      Geod. Az  |
 JV5441|                                                           dddmmss.s |
 JV5441| JV5445 LONG GREEN BALTIMORE GAS TOWER      APPROX. 7.9 KM 0032331.9 |
 JV5441| JV5444 MARYLAND TRAINING SCHOOL TANK       APPROX. 1.4 KM 0151214.6 |
 JV5441| JV5443 CUB HILL FIRE TOWER                 APPROX. 0.6 KM 0322224.4 |
 JV5441| CA9425 FINLAY 3 RM 5                        14.870 METERS 13120     |
 JV5441| JV5432 CARNEY MICROWAVE RELAY TOWER        APPROX. 1.8 KM 1654117.0 |
 JV5441| CA9424 FINLAY 3 RM 4                        23.352 METERS 19816     |
 JV5441| JV5496 BALTIMORE TV STATION WMAR MAST      APPROX.15.3 KM 2102146.2 |
 JV5441| JV5461 TOWSON RADIO STA WTOW MAST          APPROX. 2.9 KM 2925123.2 |
 JV5441| JV5654 MAYS CHAPEL BALTIMORE GAS MAST      APPROX.13.4 KM 2925659.5 |
 JV5441| JV5440 FINLAY 2                             56.825 METERS 30147     |
 JV5441|---------------------------------------------------------------------|
 JV5441
 JV5441                          SUPERSEDED SURVEY CONTROL
 JV5441
 JV5441  NAD 83(2007)-  39 24 28.39687(N)    076 31 28.51380(W) AD(2002.00) 0
 JV5441  ELLIP H (02/10/07)  115.230  (m)                       GP(2002.00)    
 JV5441  ELLIP H (09/18/02)  115.243  (m)                       GP(       ) 4 2
 JV5441  NAD 83(1991)-  39 24 28.39642(N)    076 31 28.51525(W) AD(       ) 2
 JV5441  NAD 83(1986)-  39 24 28.39195(N)    076 31 28.52306(W) AD(       ) 2
 JV5441  NAD 27      -  39 24 28.00600(N)    076 31 29.65000(W) AD(       ) 2
 JV5441  NGVD 29 (11/16/90)  148.0    (m)  RAPSU86  model used  GPS OBS        
 JV5441
 JV5441.Superseded values are not recommended for survey control.
 JV5441
 JV5441.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5441.See file dsdata.pdf to determine how the superseded data were derived.
 JV5441
 JV5441_MARKER: DS = TRIANGULATION STATION DISK
 JV5441_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5441_STAMPING: FINLAY 3 1957
 JV5441_MARK LOGO: CGS
 JV5441_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5441+STABILITY: SURFACE MOTION
 JV5441_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5441+SATELLITE: SATELLITE OBSERVATIONS - June 17, 1988
 JV5441
 JV5441  HISTORY     - Date     Condition        Report By
 JV5441  HISTORY     - 1957     MONUMENTED       CGS
 JV5441  HISTORY     - 1957     GOOD             CGS
 JV5441  HISTORY     - 19880617 GOOD
 JV5441  HISTORY     - 19950620 GOOD             USPSQD
 JV5441  HISTORY     - 19950621 GOOD             USPSQD
 JV5441
 JV5441                          STATION DESCRIPTION
 JV5441
 JV5441'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (WFD)
 JV5441'THE STATION IS ABOUT 7 MI. NE OF BALTIMORE, 5 MI. E OF TOWSON,
 JV5441'NEAR THE INTERSECTION OF OLD HARFORD ROAD AND SUMMIT AVENUE, AND
 JV5441'ON A HILL KNOWN LOCALLY AS CUB HILL.  IT IS ON THE PROPERTY OF
 JV5441'JOHN F. DICKARD, AT 2801 SUMMIT AVENUE.  THE MARK IS 26.5 FT. SW
 JV5441'OF THE SW CORNER OF MR. DICKARDS GARAGE WHICH IS CONNECTED TO HIS
 JV5441'HOUSE, 21.3 FT. S OF THE GAS AND ELECTRIC COMPANY POWER POLE
 JV5441'NO. 235900, AND IS A STANDARD DISK SET IN A CONCRETE MONUMENT
 JV5441'7 IN. IN DIAMETER AND FLUSH WITH THE GROUND.
 JV5441'THE MARK IS STAMPED FINLAY 3 1957.
 JV5441'
 JV5441'REFERENCE MARK 5 IS A STANDARD DISK SET FLUSH WITH THE SURFACE
 JV5441'IN A DRILL HOLE IN THE SW CORNER OF A FLAGSTONE PATIO AT THE REAR
 JV5441'OF MR. DICKARDS HOUSE.  THE MARK IS STAMPED FINLAY 3 1957 NO 5.
 JV5441'
 JV5441'REFERENCE MARK 4 IS NEAR THE SW CORNER OF MR. DICKARDS LOT.  IT
 JV5441'IS A STANDARD DISK, STAMPED FINLAY 3 1957 NO 4 SET IN A CONCRETE
 JV5441'MONUMENT 10 IN. IN DIAMETER, AND PROJECTING 3 IN. ABOVE THE
 JV5441'GROUND.
 JV5441'
 JV5441'THE CUB HILL FIRE TOWER IS USED AS THE AZIMUTH MARK.  THE MARK
 JV5441'IS THE CENTER OF THE VENTILATOR ATOP A PYRAMIDAL-ROOFED CABIN
 JV5441'WHICH OCCUPIES THE TOP OF THE TOWER.  THE TOWER IS OF SKELETON
 JV5441'STEEL CONSTRUCTION, 129 FT. HIGH OVERALL, AND IS THE PROPERTY OF
 JV5441'THE WESTERN UNION TELEGRAPH COMPANY.
 JV5441
 JV5441                          STATION RECOVERY (1957)
 JV5441
 JV5441'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5441'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO
 JV5441'BE IN GOOD CONDITION.  THE DISTANCE AND DIRECTION TO THE REFERENCE
 JV5441'MARKS CHECKED THE ORIGINAL DESCRIPTION WHICH IS ADEQUATE.
 JV5441'
 JV5441'1957 OBSERVATIONS TAKEN FROM A TRIPOD AND A 90-FT. TOWER.
 JV5441
 JV5441                          STATION RECOVERY (1988)
 JV5441
 JV5441'RECOVERED 1988
 JV5441'RECOVERED IN GOOD CONDITION.
 JV5441
 JV5441                          STATION RECOVERY (1995)
 JV5441
 JV5441'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5441'RECOVERED IN GOOD CONDITION.
 JV5441
 JV5441                          STATION RECOVERY (1995)
 JV5441
 JV5441'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5441'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4689 ***********************************************************************
 AB4689  DESIGNATION -  FINN
 AB4689  PID         -  AB4689
 AB4689  STATE/COUNTY-  MD/CARROLL
 AB4689  COUNTRY     -  US
 AB4689  USGS QUAD   -  WESTMINSTER (2016)
 AB4689
 AB4689                         *CURRENT SURVEY CONTROL
 AB4689  ______________________________________________________________________
 AB4689* NAD 83(2011) POSITION- 39 32 33.36050(N) 076 53 20.92973(W)   ADJUSTED
 AB4689* NAD 83(2011) ELLIP HT-   175.332 (meters)        (06/27/12)   ADJUSTED
 AB4689* NAD 83(2011) EPOCH   -  2010.00
 AB4689* NAVD 88 ORTHO HEIGHT -   207.4   (meters)      680.    (feet) GPS OBS
 AB4689  ______________________________________________________________________
 AB4689  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4689  GEOID HEIGHT    -        -32.112 (meters)                     GEOID99
 AB4689  GEOID HEIGHT    -        -32.098 (meters)                     GEOID18
 AB4689  NAD 83(2011) X  -  1,117,241.423 (meters)                     COMP
 AB4689  NAD 83(2011) Y  - -4,796,942.763 (meters)                     COMP
 AB4689  NAD 83(2011) Z  -  4,039,063.579 (meters)                     COMP
 AB4689  LAPLACE CORR    -          0.07  (seconds)                    DEFLEC18
 AB4689
 AB4689  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4689  Standards:
 AB4689         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4689            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4689  -------------------------------------------------------------------
 AB4689  NETWORK    1.62   6.10           0.65   0.67   3.11     -0.17206212
 AB4689  -------------------------------------------------------------------
 AB4689  Click here for local accuracies and other accuracy information.
 AB4689
 AB4689.The horizontal coordinates were established by GPS observations
 AB4689.and adjusted by the National Geodetic Survey in June 2012.
 AB4689
 AB4689.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4689.been affixed to the stable North American tectonic plate. See 
 AB4689.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4689
 AB4689.The horizontal coordinates are valid at the epoch date displayed above
 AB4689.which is a decimal equivalence of Year/Month/Day.
 AB4689
 AB4689.The orthometric height was determined by GPS observations and a
 AB4689.high-resolution geoid model.
 AB4689
 AB4689.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4689.GEOID18 height accuracy estimate available here.
 AB4689
 AB4689.Click photographs - Photos may exist for this station.
 AB4689
 AB4689.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4689
 AB4689.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4689
 AB4689.The ellipsoidal height was determined by GPS observations
 AB4689.and is referenced to NAD 83.
 AB4689
 AB4689. The following values were computed from the NAD 83(2011) position.
 AB4689
 AB4689;                    North         East     Units Scale Factor Converg.
 AB4689;SPC MD       -   208,250.458   409,529.174   MT  1.00001751   +0 04 10.5
 AB4689;SPC MD       -   683,235.04  1,343,596.97   sFT  1.00001751   +0 04 10.5
 AB4689;UTM  18      - 4,378,696.474   337,666.556   MT  0.99992445   -1 12 10.8
 AB4689
 AB4689!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4689!SPC MD       -   0.99997249  x   1.00001751  =   0.99999000
 AB4689!UTM  18      -   0.99997249  x   0.99992445  =   0.99989695
 AB4689
 AB4689_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3766678696(NAD 83)
 AB4689
 AB4689                          SUPERSEDED SURVEY CONTROL
 AB4689
 AB4689  NAD 83(2007)-  39 32 33.36074(N)    076 53 20.93049(W) AD(2002.00) 0
 AB4689  ELLIP H (02/10/07)  175.355  (m)                       GP(2002.00)    
 AB4689  ELLIP H (08/30/02)  175.344  (m)                       GP(       ) 4 2
 AB4689  NAD 83(1991)-  39 32 33.36031(N)    076 53 20.93091(W) AD(       ) 1
 AB4689  ELLIP H (07/03/96)  175.271  (m)                       GP(       ) 1 1
 AB4689  NAVD 88 (07/03/96)  207.4    (m)  GEOID93  model used  GPS OBS        
 AB4689
 AB4689.Superseded values are not recommended for survey control.
 AB4689
 AB4689.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4689.See file dsdata.pdf to determine how the superseded data were derived.
 AB4689
 AB4689_MARKER: DD = SURVEY DISK
 AB4689_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4689_STAMPING: FINN 1995
 AB4689_MARK LOGO: MD-013
 AB4689_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4689_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4689+STABILITY: SURFACE MOTION
 AB4689_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4689+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4689
 AB4689  HISTORY     - Date     Condition        Report By
 AB4689  HISTORY     - 1995     MONUMENTED       MD-013
 AB4689
 AB4689                          STATION DESCRIPTION
 AB4689
 AB4689'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4689'STATION IS LOCATED ABOUT 6 MI (9.7 KM) SOUTHEAST OF WESTMINSTER AND
 AB4689'ABOUT 3 MI (4.8 KM) NORTH OF FINKSBURG. TO REACH STATION FROM THE
 AB4689'INTERSECTION OF MD ROUTE 140 (BALTIMORE BLVD) AND MD ROUTE 91 (GAMBER
 AB4689'ROAD) GO WEST ON MD ROUTE 140 FOR 2.6 MI (4.2 KM) TO THE INTERSECTION
 AB4689'WITH SANDYMOUNT ROAD. TURN RIGHT ON SANDYMOUNT ROAD AND GO NORTH FOR
 AB4689'1.7 MI (2.7 KM) TO THE INTERSECTION WITH PATAPSCO ROAD. TURN RIGHT ON
 AB4689'PATAPSCO ROAD AND GO NORTH FOR 0.6 MI (1.0 KM) TO THE INTERSECTION
 AB4689'WITH FINN DRIVE. TURN RIGHT ON FINN DRIVE AND GO EAST FOR 0.1 MI (0.2
 AB4689'KM) TO THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10
 AB4689'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 9.0 FT
 AB4689'(2.7 M) NORTH OF THE CENTERLINE OF THE ROAD, 6.9 FT (2.1 M) SOUTH OF A
 AB4689'FENCE AND 58.0 FT (17.7 M) WEST OF THE CORNER OF THE FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5089 ***********************************************************************
 JV5089  DESIGNATION -  FIR
 JV5089  PID         -  JV5089
 JV5089  STATE/COUNTY-  MD/QUEEN ANNES
 JV5089  COUNTRY     -  US
 JV5089  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5089
 JV5089                         *CURRENT SURVEY CONTROL
 JV5089  ______________________________________________________________________
 JV5089* NAD 83(1991) POSITION- 39 02 45.36588(N) 076 11 03.49454(W)   ADJUSTED
 JV5089* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5089  ______________________________________________________________________
 JV5089  GEOID HEIGHT    -        -33.606 (meters)                     GEOID18
 JV5089  LAPLACE CORR    -         -2.68  (seconds)                    DEFLEC18
 JV5089  HORZ ORDER      -  THIRD
 JV5089
 JV5089.The horizontal coordinates were established by classical geodetic methods
 JV5089.and adjusted by the National Geodetic Survey in January 1992.
 JV5089
 JV5089.The orthometric height was scaled from a topographic map.
 JV5089
 JV5089.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5089.GEOID18 height accuracy estimate available here.
 JV5089
 JV5089.Click photographs - Photos may exist for this station.
 JV5089
 JV5089.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5089
 JV5089. The following values were computed from the NAD 83(1991) position.
 JV5089
 JV5089;                    North         East     Units Scale Factor Converg.
 JV5089;SPC MD       -   153,420.951   470,610.926   MT  0.99995424   +0 30 43.1
 JV5089;SPC MD       -   503,348.57  1,543,996.01   sFT  0.99995424   +0 30 43.1
 JV5089;UTM  18      - 4,322,541.341   397,513.854   MT  0.99972933   -0 44 46.0
 JV5089
 JV5089!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5089!SPC MD       -   1.00000515  x   0.99995424  =   0.99995939
 JV5089!UTM  18      -   1.00000515  x   0.99972933  =   0.99973448
 JV5089
 JV5089:                Primary Azimuth Mark                     Grid Az
 JV5089:SPC MD       -  RAIN                                     194 32 27.4
 JV5089:UTM  18      -  RAIN                                     195 47 56.5
 JV5089
 JV5089_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9751322541(NAD 83)
 JV5089
 JV5089|---------------------------------------------------------------------|
 JV5089| PID    Reference Object                     Distance      Geod. Az  |
 JV5089|                                                           dddmmss.s |
 JV5089| CA9426 FIR RM                               10.450 METERS 10917     |
 JV5089| JV5048 RAIN                                APPROX. 3.9 KM 1950310.5 |
 JV5089|---------------------------------------------------------------------|
 JV5089
 JV5089                          SUPERSEDED SURVEY CONTROL
 JV5089
 JV5089  NAD 83(1986)-  39 02 45.36058(N)    076 11 03.50665(W) AD(       ) 3
 JV5089  NAD 27      -  39 02 44.96200(N)    076 11 04.65300(W) AD(       ) 3
 JV5089  USSD        -  39 02 45.33200(N)    076 11 04.48900(W) AD(       ) 3
 JV5089
 JV5089.Superseded values are not recommended for survey control.
 JV5089
 JV5089.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5089.See file dsdata.pdf to determine how the superseded data were derived.
 JV5089
 JV5089_MARKER: Z = SEE DESCRIPTION
 JV5089_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 JV5089_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 JV5089
 JV5089  HISTORY     - Date     Condition        Report By
 JV5089  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5089  HISTORY     - 1938     MARK NOT FOUND   CGS
 JV5089
 JV5089                          STATION DESCRIPTION
 JV5089
 JV5089'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5089'STATION IS ON THE EASTERN SHORE OF CHESTER RIVER, ON PINEY POINT,
 JV5089'ABOUT 1-5/8 MILES NNW OF BREAK POINT AND 1/2 MILE W OF PINEY COVE,
 JV5089'ON MARSH LAND AT THE EXTREME END OF PINEY POINT, ABOUT ON LEVEL
 JV5089'WITH HIGH WATER, AND 4 YARDS E OF SHORE.
 JV5089'
 JV5089'STATION MARK IS CENTER OF 2-INCH TILE PIPE WITH TOP FLUSH WITH
 JV5089'SURFACE OF GROUND.  SUBSURFACE MARK IS CENTER OF A 2-INCH
 JV5089'DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES BELOW THE SURFACE
 JV5089'MARK.
 JV5089'
 JV5089'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 JV5089'A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5089'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5089'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 JV5089'IS 10.45 METERS (34.3 FEET) FROM STATION S 70 DEG 43 MIN E.
 JV5089'
 JV5089'OTHER DISTANCES AND BEARINGS ARE AS FOLLOWS--CHIMNEY OF FISHING
 JV5089'SHACK, 2-3/4 MILES, S 30 DEG 37 MIN W.  RIGHT TANGENT OF PILES OF
 JV5089'BOGLE WHARF, 1-1/4 MILES, S 50 DEG 37 MIN W.  CHIMNEY OF HOUSE, 1-1/2
 JV5089'MILES, S 56 DEG 04 MIN W.  S CHIMNEY OF HOUSE, 1-1/2 MILES, N 65 DEG
 JV5089'30 MIN W.  N CHIMNEY OF HOUSE, 2-1/4 MILES, N 30 DEG 10 MIN W. W
 JV5089'CHIMNEY OF HOUSE, 3 MILES, N 23 DEG 04 MIN W. W GABLE OF BARN, 3
 JV5089'1/8 MILES, N 01 DEG 34 MIN W. LEFT TANGENT OF WOODS, 3/4 MILE,
 JV5089'N 25 DEG 33 MIN E. WILLIAMS WATER TANK, 1-1/4 MILES, S 41 DEG 23
 JV5089'MIN E.
 JV5089
 JV5089                          STATION RECOVERY (1938)
 JV5089
 JV5089'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5089'THE POINT IS SUBJECT TO CONSIDERABLE EROSION AND THE STATION HAS
 JV5089'BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1009 ***********************************************************************
 JV1009  DESIGNATION -  FIRE STATION
 JV1009  PID         -  JV1009
 JV1009  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1009  COUNTRY     -  US
 JV1009  USGS QUAD   -  ODENTON (2016)
 JV1009
 JV1009                         *CURRENT SURVEY CONTROL
 JV1009  ______________________________________________________________________
 JV1009* NAD 83(1986) POSITION- 39 05 24.     (N) 076 44 04.     (W)   SCALED
 JV1009* NAVD 88 ORTHO HEIGHT -    42.211 (meters)      138.49  (feet) ADJUSTED
 JV1009  ______________________________________________________________________
 JV1009  GEOID HEIGHT    -        -32.578 (meters)                     GEOID18
 JV1009  DYNAMIC HEIGHT  -         42.188 (meters)      138.41  (feet) COMP
 JV1009  MODELED GRAVITY -    980,085.7   (mgal)                       NAVD 88
 JV1009
 JV1009  VERT ORDER      -  FIRST     CLASS II
 JV1009
 JV1009.The horizontal coordinates were scaled from a map and have
 JV1009.an estimated accuracy of +/- 6 seconds.
 JV1009
 JV1009.The orthometric height was determined by differential leveling and
 JV1009.adjusted by the NATIONAL GEODETIC SURVEY
 JV1009.in June 1991.
 JV1009
 JV1009.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1009.GEOID18 height accuracy estimate available here.
 JV1009
 JV1009.Click photographs - Photos may exist for this station.
 JV1009
 JV1009.The dynamic height is computed by dividing the NAVD 88
 JV1009.geopotential number by the normal gravity value computed on the
 JV1009.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1009.degrees latitude (g = 980.6199 gals.).
 JV1009
 JV1009.The modeled gravity was interpolated from observed gravity values.
 JV1009
 JV1009;                    North         East    Units  Estimated Accuracy
 JV1009;SPC MD       -   158,030.      422,970.      MT  (+/- 180 meters Scaled)
 JV1009
 JV1009_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ499281(NAD 83)
 JV1009
 JV1009                          SUPERSEDED SURVEY CONTROL
 JV1009
 JV1009  NGVD 29 (11/26/84)   42.437  (m)          139.23   (f) ADJUSTED    1 2
 JV1009
 JV1009.Superseded values are not recommended for survey control.
 JV1009
 JV1009.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1009.See file dsdata.pdf to determine how the superseded data were derived.
 JV1009
 JV1009_MARKER: Z = SEE DESCRIPTION
 JV1009_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1009_SP_SET: PAVEMENT
 JV1009_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1009_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1009+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2003
 JV1009
 JV1009  HISTORY     - Date     Condition        Report By
 JV1009  HISTORY     - UNK      MONUMENTED       USACE
 JV1009  HISTORY     - 1941     GOOD             CGS
 JV1009  HISTORY     - 20030930 GOOD             USPSQD
 JV1009
 JV1009                          STATION DESCRIPTION
 JV1009
 JV1009'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1009'AT FORT GEORGE G. MEADE, ANNE ARUNDEL COUNTY, ABOUT 250 FEET
 JV1009'NORTHEAST OF THE RAILWAY STATION, AT THE NORTHWEST CORNER OF THE
 JV1009'INTERSECTION OF ROBERTS AND ROCK AVENUES, AT THE ENTRANCE
 JV1009'TO THE FIRE STATION, 0.4 FOOT SOUTHEAST OF THE SOUTHEAST CORNER
 JV1009'OF THE STATION, AND ON THE TOP OF THE CONCRETE PAVEMENT.  A
 JV1009'CHISELED SEMI-CIRCLE WITH STRAIGHT EDGE FORMED BY EDGE OF
 JV1009'PAVEMENT.
 JV1009
 JV1009                          STATION RECOVERY (2003)
 JV1009
 JV1009'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV1009'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6581 ***********************************************************************
 HV6581  DESIGNATION -  FIRING POINT F RNG TRIAL 1919
 HV6581  PID         -  HV6581
 HV6581  STATE/COUNTY-  MD/ST MARYS
 HV6581  COUNTRY     -  US
 HV6581  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6581
 HV6581                         *CURRENT SURVEY CONTROL
 HV6581  ______________________________________________________________________
 HV6581* NAD 83(1993) POSITION- 38 08 03.58863(N) 076 29 55.40245(W)   ADJUSTED
 HV6581* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6581  ______________________________________________________________________
 HV6581  GEOID HEIGHT    -        -34.626 (meters)                     GEOID18
 HV6581  LAPLACE CORR    -         -5.84  (seconds)                    DEFLEC18
 HV6581  HORZ ORDER      -  THIRD
 HV6581
 HV6581.The horizontal coordinates were established by classical geodetic methods
 HV6581.and adjusted by the National Geodetic Survey in November 1994.
 HV6581
 HV6581.The orthometric height was scaled from a topographic map.
 HV6581
 HV6581.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6581.GEOID18 height accuracy estimate available here.
 HV6581
 HV6581.Click photographs - Photos may exist for this station.
 HV6581
 HV6581.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6581
 HV6581. The following values were computed from the NAD 83(1993) position.
 HV6581
 HV6581;                    North         East     Units Scale Factor Converg.
 HV6581;SPC MD       -    52,033.782   443,949.195   MT  1.00003295   +0 18 52.6
 HV6581;SPC MD       -   170,714.17  1,456,523.32   sFT  1.00003295   +0 18 52.6
 HV6581;SPC VA N     - 2,053,821.959 3,675,439.220   MT  0.99998371   +1 14 56.5
 HV6581;SPC VA N     - 6,738,247.54 12,058,503.51   sFT  0.99998371   +1 14 56.5
 HV6581;SPC VA S     - 1,201,735.897 3,675,448.956   MT  1.00003490   +1 12 52.6
 HV6581;SPC VA S     - 3,942,695.19 12,058,535.45   sFT  1.00003490   +1 12 52.6
 HV6581;UTM  18      - 4,221,780.333   368,652.925   MT  0.99981248   -0 55 32.2
 HV6581
 HV6581!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6581!SPC MD       -   1.00000532  x   1.00003295  =   1.00003827
 HV6581!SPC VA N     -   1.00000532  x   0.99998371  =   0.99998903
 HV6581!SPC VA S     -   1.00000532  x   1.00003490  =   1.00004022
 HV6581!UTM  18      -   1.00000532  x   0.99981248  =   0.99981780
 HV6581
 HV6581:                Primary Azimuth Mark                     Grid Az
 HV6581:SPC MD       -  PINEY POINT LIGHTHOUSE                   272 02 50.4
 HV6581:SPC VA N     -  PINEY POINT LIGHTHOUSE                   271 06 46.5
 HV6581:SPC VA S     -  PINEY POINT LIGHTHOUSE                   271 08 50.4
 HV6581:UTM  18      -  PINEY POINT LIGHTHOUSE                   273 17 15.2
 HV6581
 HV6581_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6865221780(NAD 83)
 HV6581
 HV6581|---------------------------------------------------------------------|
 HV6581| PID    Reference Object                     Distance      Geod. Az  |
 HV6581|                                                           dddmmss.s |
 HV6581| HV6579 FIRING POINT FRONT RANGE 1919       118.348 METERS 13522     |
 HV6581| HV6869 PINEY POINT LIGHTHOUSE              APPROX. 2.7 KM 2722143.0 |
 HV6581|---------------------------------------------------------------------|
 HV6581
 HV6581                          SUPERSEDED SURVEY CONTROL
 HV6581
 HV6581  NAD 83(1991)-  38 08 03.58763(N)    076 29 55.40554(W) AD(       ) 3
 HV6581  NAD 83(1986)-  38 08 03.58877(N)    076 29 55.41844(W) AD(       ) 3
 HV6581  NAD 27      -  38 08 03.13900(N)    076 29 56.57900(W) AD(       ) 3
 HV6581  USSD        -  38 08 03.58000(N)    076 29 56.37600(W) AD(       ) 3
 HV6581
 HV6581.Superseded values are not recommended for survey control.
 HV6581
 HV6581.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6581.See file dsdata.pdf to determine how the superseded data were derived.
 HV6581
 HV6581_MARKER: DS = TRIANGULATION STATION DISK
 HV6581_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6581_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6581
 HV6581  HISTORY     - Date     Condition        Report By
 HV6581  HISTORY     - 1919     MONUMENTED       CGS
 HV6581  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6581  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6581
 HV6581                          STATION DESCRIPTION
 HV6581
 HV6581'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6581'STATION IS ON NE SIDE OF POTOMAC RIVER, ON EXTREME N POINT OF
 HV6581'ST. GEORGE ISLAND, ABOUT 200 METERS W FROM COURTNEYS HOUSE, ON
 HV6581'LAND BELONGING TO FRED LEWIS, ABOUT 200 METERS FROM END OF MARSHY
 HV6581'SPIT, 15 METERS FROM HIGH-WATER MARK IN LINE WITH SANDY POINT, 12
 HV6581'METERS FROM HIGH-WATER MARK IN LINE WITH PINEY POINT LIGHTHOUSE,
 HV6581'17 METERS FROM HIGH-WATER MARK IN LINE WITH SWANNS HOUSE, AND 12
 HV6581'METERS FROM EDGE OF MARSH IN LINE WITH COURTNEYS HOUSE.  IT IS
 HV6581'ON SAND AT EDGE OF MARSH, AND IS AWASH AT HIGH TIDE.
 HV6581'
 HV6581'STATION MARK IS A BRONZE TABLET MARKED F.P.F.R. TRIAL, SET IN
 HV6581'CONCRETE IN A TILE AND SURROUNDED BY A MASS OF CONCRETE.  IT IS
 HV6581'118.35 METERS (388.3 FEET) NW OF STATION FIRING POINT FRONT RANGE.
 HV6581
 HV6581                          STATION RECOVERY (1942)
 HV6581
 HV6581'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6581'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR 1-1/2
 HV6581'HOURS.  EVIDENTLY THE SHORE LINE HAS CHANGED CONSIDERABLY AT
 HV6581'THIS POINT, ALSO THERE HAS BEEN A SMALL QUANTITY OF SAND REMOVED
 HV6581'AT THIS LOCATION.  IT IS RECOMMENDED THAT THIS STATION BE
 HV6581'CLASSIFIED AS DESTROYED.
 HV6581
 HV6581                          STATION RECOVERY (1958)
 HV6581
 HV6581'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6581'A THOROUGH SEARCH WAS MADE FOR THIS STATION WITHOUT RESULTS.  THE
 HV6581'WHOLE AREA HAS BEEN CHANGED BY A FILL FOR THE NEW ST. GEORGE
 HV6581'ISLAND BRIDGE.  THIS STATION SHOULD BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6579 ***********************************************************************
 HV6579  DESIGNATION -  FIRING POINT FRONT RANGE 1919
 HV6579  PID         -  HV6579
 HV6579  STATE/COUNTY-  MD/ST MARYS
 HV6579  COUNTRY     -  US
 HV6579  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6579
 HV6579                         *CURRENT SURVEY CONTROL
 HV6579  ______________________________________________________________________
 HV6579* NAD 83(1993) POSITION- 38 08 00.85743(N) 076 29 51.98797(W)   ADJUSTED
 HV6579* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6579  ______________________________________________________________________
 HV6579  GEOID HEIGHT    -        -34.630 (meters)                     GEOID18
 HV6579  LAPLACE CORR    -         -5.84  (seconds)                    DEFLEC18
 HV6579  HORZ ORDER      -  SECOND
 HV6579
 HV6579.The horizontal coordinates were established by classical geodetic methods
 HV6579.and adjusted by the National Geodetic Survey in November 1994.
 HV6579
 HV6579.The orthometric height was scaled from a topographic map.
 HV6579
 HV6579.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6579.GEOID18 height accuracy estimate available here.
 HV6579
 HV6579.Click photographs - Photos may exist for this station.
 HV6579
 HV6579.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6579
 HV6579. The following values were computed from the NAD 83(1993) position.
 HV6579
 HV6579;                    North         East     Units Scale Factor Converg.
 HV6579;SPC MD       -    51,950.026   444,032.814   MT  1.00003312   +0 18 54.8
 HV6579;SPC MD       -   170,439.38  1,456,797.66   sFT  1.00003312   +0 18 54.8
 HV6579;SPC VA N     - 2,053,739.582 3,675,524.189   MT  0.99998382   +1 14 58.6
 HV6579;SPC VA N     - 6,737,977.28 12,058,782.28   sFT  0.99998382   +1 14 58.6
 HV6579;SPC VA S     - 1,201,653.465 3,675,533.880   MT  1.00003472   +1 12 54.7
 HV6579;SPC VA S     - 3,942,424.74 12,058,814.07   sFT  1.00003472   +1 12 54.7
 HV6579;UTM  18      - 4,221,694.806   368,734.693   MT  0.99981221   -0 55 30.0
 HV6579
 HV6579!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6579!SPC MD       -   1.00000532  x   1.00003312  =   1.00003844
 HV6579!SPC VA N     -   1.00000532  x   0.99998382  =   0.99998914
 HV6579!SPC VA S     -   1.00000532  x   1.00003472  =   1.00004004
 HV6579!UTM  18      -   1.00000532  x   0.99981221  =   0.99981753
 HV6579
 HV6579_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6873421694(NAD 83)
 HV6579
 HV6579                          SUPERSEDED SURVEY CONTROL
 HV6579
 HV6579  NAD 83(1991)-  38 08 00.85644(N)    076 29 51.99105(W) AD(       ) 2
 HV6579  NAD 83(1986)-  38 08 00.85759(N)    076 29 52.00397(W) AD(       ) 2
 HV6579  NAD 27      -  38 08 00.40800(N)    076 29 53.16500(W) AD(       ) 2
 HV6579  USSD        -  38 08 00.84900(N)    076 29 52.96200(W) AD(       ) 3
 HV6579
 HV6579.Superseded values are not recommended for survey control.
 HV6579
 HV6579.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6579.See file dsdata.pdf to determine how the superseded data were derived.
 HV6579
 HV6579_MARKER: DS = TRIANGULATION STATION DISK
 HV6579_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6579_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6579
 HV6579  HISTORY     - Date     Condition        Report By
 HV6579  HISTORY     - 1919     MONUMENTED       CGS
 HV6579  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6579  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6579
 HV6579                          STATION DESCRIPTION
 HV6579
 HV6579'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6579'STATION IS ON NE SIDE OF POTOMAC RIVER, ON N END OF ST. GEORGE
 HV6579'ISLAND, ABOUT 350 METERS FROM EXTREME END OF THE SPIT, 200 METERS
 HV6579'SW FROM COURTNEYS HOUSE, ON CLEARED LAND (CLAY), ABOUT 1 FOOT
 HV6579'ABOVE HIGH-WATER.  IT IS 23 METERS FROM HIGH-WATER MARK ON W
 HV6579'SIDE OF ISLAND, AND 25 METERS FROM HEAD OF MARSH WHICH RUNS TO
 HV6579'NE POINT OF ISLAND.
 HV6579'
 HV6579'STATION MARK IS A BRONZE TABLET, STAMPED FRONT FIRING POINT
 HV6579'RANGE, SET IN CONCRETE IN A TILE SURROUNDED BY A MASS OF
 HV6579'CONCRETE.  STATION FIRING POINT FRONT RANGE TRIAL IS 118.35
 HV6579'METERS (388.3 FEET) NW OF STATION.
 HV6579
 HV6579                          STATION RECOVERY (1942)
 HV6579
 HV6579'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6579'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HV6579'
 HV6579'(1) 19 METERS FROM HIGH-WATER MARK, NOT 23 METERS.
 HV6579'
 HV6579'(2) DELETE COURTNEYS HOUSE SINCE THE HOUSE NO LONGER EXISTS.
 HV6579'
 HV6579'THE STATION IS LOCATED ON THE NE SIDE OF THE POTOMAC RIVER ON
 HV6579'THE N END OF ST. GEORGE ISLAND ON THE PROPERTY OF MR. DODSON,
 HV6579'ABOUT 0.2 MILE FROM EXTREME END OF THE SPIT, ABOUT 250 FEET W OF
 HV6579'A WATER TANK, ABOUT 80 FEET FROM HEAD OF MARSH WHICH RUNS TO NE
 HV6579'POINT OF ISLAND, 62 FEET FROM HIGH-WATER MARK ON W SIDE OF
 HV6579'ISLAND, 32 FEET S OF A POWER-LINE POLE AT THE CORNER OF A CHICKEN
 HV6579'LOT, 18 FEET E OF THE SE CORNER OF A BOAT HOUSE AND 1 FOOT
 HV6579'ABOVE HIGH WATER.
 HV6579'
 HV6579'THE STATION IS MARKED BY A BRONZE DISK TRIANGULATION-STATION
 HV6579'MARK, STAMPED FRONT FIRING POINT RANGE, SET IN A TILE
 HV6579'SURROUNDED BY A MASS OF CONCRETE, WHICH IS FLUSH WITH THE SURFACE
 HV6579'OF THE GROUND.  THE DISK IS LOOSE IN THE CONCRETE AND THE CONCRETE
 HV6579'IS CRACKED.
 HV6579
 HV6579                          STATION RECOVERY (1958)
 HV6579
 HV6579'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6579'A THOROUGH SEARCH WAS MADE FOR THIS STATION WITHOUT RESULTS.  ALL
 HV6579'REFERENCES WERE INTACT AND MEASUREMENTS WERE MADE, GIVING AN
 HV6579'EXCELLENT LOCATION FOR THE MARK.  SINCE IT WAS NOTED IN THE 1942
 HV6579'RECOVERY NOTE THAT THE MARK WAS LOOSE AND THAT IT WAS LOCATED ON
 HV6579'A DRIVEWAY, THIS STATION SHOULD BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6030 ***********************************************************************
 HV6030  DESIGNATION -  FIRST
 HV6030  PID         -  HV6030
 HV6030  STATE/COUNTY-  MD/TALBOT
 HV6030  COUNTRY     -  US
 HV6030  USGS QUAD   -  OXFORD (2016)
 HV6030
 HV6030                         *CURRENT SURVEY CONTROL
 HV6030  ______________________________________________________________________
 HV6030* NAD 83(1991) POSITION- 38 41 05.49666(N) 076 10 23.50339(W)   ADJUSTED
 HV6030* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6030  ______________________________________________________________________
 HV6030  GEOID HEIGHT    -        -34.643 (meters)                     GEOID18
 HV6030  LAPLACE CORR    -         -4.07  (seconds)                    DEFLEC18
 HV6030  HORZ ORDER      -  THIRD
 HV6030
 HV6030.The horizontal coordinates were established by classical geodetic methods
 HV6030.and adjusted by the National Geodetic Survey in January 1992.
 HV6030
 HV6030.The orthometric height was scaled from a topographic map.
 HV6030
 HV6030.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6030.GEOID18 height accuracy estimate available here.
 HV6030
 HV6030.Click photographs - Photos may exist for this station.
 HV6030
 HV6030.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6030
 HV6030. The following values were computed from the NAD 83(1991) position.
 HV6030
 HV6030;                    North         East     Units Scale Factor Converg.
 HV6030;SPC MD       -   113,349.225   471,935.543   MT  0.99995537   +0 31 08.2
 HV6030;SPC MD       -   371,879.92  1,548,341.86   sFT  0.99995537   +0 31 08.2
 HV6030;UTM  18      - 4,282,459.145   397,960.280   MT  0.99972822   -0 44 00.1
 HV6030
 HV6030!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6030!SPC MD       -   1.00000516  x   0.99995537  =   0.99996053
 HV6030!UTM  18      -   1.00000516  x   0.99972822  =   0.99973338
 HV6030
 HV6030:                Primary Azimuth Mark                     Grid Az
 HV6030:SPC MD       -  BACH                                     197 07 20.7
 HV6030:UTM  18      -  BACH                                     198 22 29.0
 HV6030
 HV6030_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9796082459(NAD 83)
 HV6030
 HV6030|---------------------------------------------------------------------|
 HV6030| PID    Reference Object                     Distance      Geod. Az  |
 HV6030|                                                           dddmmss.s |
 HV6030| HV6046 BACH                                APPROX. 1.1 KM 1973828.9 |
 HV6030|---------------------------------------------------------------------|
 HV6030
 HV6030                          SUPERSEDED SURVEY CONTROL
 HV6030
 HV6030  NAD 83(1986)-  38 41 05.49322(N)    076 10 23.51908(W) AD(       ) 3
 HV6030  NAD 27      -  38 41 05.05800(N)    076 10 24.73600(W) AD(       ) 3
 HV6030  USSD        -  38 41 05.45200(N)    076 10 24.54000(W) AD(       ) 3
 HV6030
 HV6030.Superseded values are not recommended for survey control.
 HV6030
 HV6030.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6030.See file dsdata.pdf to determine how the superseded data were derived.
 HV6030
 HV6030_MARKER: H = DRILL HOLE
 HV6030_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6030_PROJECTION: PROJECTING 10 CENTIMETERS
 HV6030_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6030
 HV6030  HISTORY     - Date     Condition        Report By
 HV6030  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6030  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6030
 HV6030                          STATION DESCRIPTION
 HV6030
 HV6030'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6030'ON THE EASTERN SHORE OF TRED AVON RIVER, IN TOWN OF OXFORD, ABOUT
 HV6030'1/8 MILE N OF RAILROAD WHARVES.  STATION IS ABOUT 8 FEET ABOVE
 HV6030'HIGH WATER, 2 YARDS ESE OF EDGE OF BANK, 4 YARDS E BY N OF POINT
 HV6030'OF BANK, 4 YARDS NE OF EDGE OF BANK OF SMALL GULLY, 2 YARDS S OF
 HV6030'CORNER FENCE POST, AND 35 YARDS W OF HOUSE.  STATION IS MARKED BY
 HV6030'A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6030'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV6030'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6030'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE MARK IS THE
 HV6030'CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES
 HV6030'BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO VARIOUS
 HV6030'POINTS OF REFERENCE ARE AS FOLLOWS--WINDMILL, 1/4 MILE, S 4 DEG 21
 HV6030'MIN W.  RIGHT PEAK OF SMALL HOUSE, 1-5/8 MILES, S 69 DEG 37 MIN W.
 HV6030'RIGHT PEAK OF MODERN HOUSE, 1-5/8 MILES, S 84 DEG 48 MIN W.  LEFT
 HV6030'PEAK OF SMALL HOUSE, 1-1/8 MILES, N 33 DEG 45 MIN W.  NAIL IN
 HV6030'BLAZE IN FENCE POST, 4.98 METERS (16.34 FEET), N 45 DEG 30 MIN E.
 HV6030'NAIL IN BLAZE IN 20-INCH APPLE TREE, 11.94 METERS (39.2 FEET), N
 HV6030'75 DEG 21 MIN E.  NAIL IN BLAZE IN 12-INCH APPLE TREE, 14.56
 HV6030'METERS (47.8 FEET), S 75 DEG 57 MIN E.
 HV6030
 HV6030                          STATION RECOVERY (1940)
 HV6030
 HV6030'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6030'STATION SEARCHED FOR BUT NOT RECOVERED.  ACCORDING TO LOCAL
 HV6030'INFORMATION VERIFIED BY CARETAKER OF NEARBY ESTATE, THE SHORE LINE
 HV6030'HAS MOVED BACK APPROXIMATELY 100 FEET SINCE THE STATION WAS PUT
 HV6030'IN, AND THE MONUMENT HAS BEEN WASHED OUT FOR AT LEAST TEN YEARS.
 HV6030'
 HV6030'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7088 ***********************************************************************
 HV7088  DESIGNATION -  FIRST
 HV7088  PID         -  HV7088
 HV7088  STATE/COUNTY-  MD/CHARLES
 HV7088  COUNTRY     -  US
 HV7088  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7088
 HV7088                         *CURRENT SURVEY CONTROL
 HV7088  ______________________________________________________________________
 HV7088* NAD 83(1993) POSITION- 38 22 06.94416(N) 076 59 03.58659(W)   ADJUSTED
 HV7088* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV7088  ______________________________________________________________________
 HV7088  GEOID HEIGHT    -        -33.401 (meters)                     GEOID18
 HV7088  LAPLACE CORR    -         -3.98  (seconds)                    DEFLEC18
 HV7088  HORZ ORDER      -  THIRD
 HV7088
 HV7088.The horizontal coordinates were established by classical geodetic methods
 HV7088.and adjusted by the National Geodetic Survey in November 1994.
 HV7088
 HV7088.The orthometric height was scaled from a topographic map.
 HV7088
 HV7088.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7088.GEOID18 height accuracy estimate available here.
 HV7088
 HV7088.Click photographs - Photos may exist for this station.
 HV7088
 HV7088.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7088
 HV7088. The following values were computed from the NAD 83(1993) position.
 HV7088
 HV7088;                    North         East     Units Scale Factor Converg.
 HV7088;SPC MD       -    77,917.233   401,369.436   MT  0.99998877   +0 00 35.4
 HV7088;SPC MD       -   255,633.46  1,316,826.22   sFT  0.99998877   +0 00 35.4
 HV7088;SPC VA N     - 2,079,005.932 3,632,444.369   MT  0.99995777   +0 56 45.4
 HV7088;SPC VA N     - 6,820,871.96 11,917,444.57   sFT  0.99995777   +0 56 45.4
 HV7088;UTM  18      - 4,248,576.472   326,648.745   MT  0.99997009   -1 13 55.3
 HV7088
 HV7088!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7088!SPC MD       -   1.00000497  x   0.99998877  =   0.99999374
 HV7088!SPC VA N     -   1.00000497  x   0.99995777  =   0.99996274
 HV7088!UTM  18      -   1.00000497  x   0.99997009  =   0.99997506
 HV7088
 HV7088:                Primary Azimuth Mark                     Grid Az
 HV7088:SPC MD       -  PERSIMMON 3                              283 57 48.2
 HV7088:SPC VA N     -  PERSIMMON 3                              283 01 38.2
 HV7088:UTM  18      -  PERSIMMON 3                              285 12 18.9
 HV7088
 HV7088_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2664848576(NAD 83)
 HV7088
 HV7088|---------------------------------------------------------------------|
 HV7088| PID    Reference Object                     Distance      Geod. Az  |
 HV7088|                                                           dddmmss.s |
 HV7088| CX2761 FIRST RM 1                           10.081 METERS 02926     |
 HV7088| CX2762 FIRST RM 2                            8.463 METERS 12157     |
 HV7088| HV7101 LOWER CEDAR POINT LIGHTHOUSE        APPROX. 3.3 KM 1941802.1 |
 HV7088| HV5376 PERSIMMON POINT SHOAL LIGHT         APPROX. 1.4 KM 2812531.6 |
 HV7088| HV5372 PERSIMMON 3                         APPROX. 2.5 KM 2835823.6 |
 HV7088|---------------------------------------------------------------------|
 HV7088
 HV7088                          SUPERSEDED SURVEY CONTROL
 HV7088
 HV7088  NAD 83(1991)-  38 22 06.94470(N)    076 59 03.59158(W) AD(       ) 3
 HV7088  NAD 83(1986)-  38 22 06.94493(N)    076 59 03.60132(W) AD(       ) 3
 HV7088  NAD 27      -  38 22 06.48800(N)    076 59 04.70000(W) AD(       ) 3
 HV7088
 HV7088.Superseded values are not recommended for survey control.
 HV7088
 HV7088.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7088.See file dsdata.pdf to determine how the superseded data were derived.
 HV7088
 HV7088_MARKER: DS = TRIANGULATION STATION DISK
 HV7088_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7088_STAMPING: FIRST 1928
 HV7088_MARK LOGO: CGS
 HV7088_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7088+STABILITY: SURFACE MOTION
 HV7088
 HV7088  HISTORY     - Date     Condition        Report By
 HV7088  HISTORY     - 1928     MONUMENTED       CGS
 HV7088  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV7088  HISTORY     - 1958     SEE DESCRIPTION  CGS
 HV7088
 HV7088                          STATION DESCRIPTION
 HV7088
 HV7088'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (PCD)
 HV7088'MARK IS ON THE E SHORE OF THE POTOMAC RIVER ABOUT 2 MILES ABOVE
 HV7088'LOWER CEDAR POINT AND ABOUT IN LINE WITH PERSIMMON POINT AND
 HV7088'PERSIMMON POINT FLASHING BEACON.  STANDARD MARK WITH TOP FLUSH
 HV7088'WITH THE SURFACE OF THE GROUND LOCATED AT THE HIGH-WATER LINE.
 HV7088'
 HV7088'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7088'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 HV7088'
 HV7088'REFERENCE MARK NO.1 IS SET BETWEEN THE MOST NORTHERLY CEDARS OF
 HV7088'GROUP IN THIS LOCALITY, 10.081 METERS NE OF MARK AND 5.1 FEET W OF
 HV7088'FENCE.
 HV7088'
 HV7088'REFERENCE MARK NO.2 IS FLUSH WITH THE GROUND, 8.463 METERS SE OF
 HV7088'STATION AND 4.7 FEET W OF FENCE LINE.
 HV7088'
 HV7088'TO REACH POINT TURN OFF MAIN HIGHWAY ON THE POPES CREEK ROAD.
 HV7088'WHERE THIS ROAD APPROACHES THE RIVER TURN LEFT THROUGH THE
 HV7088'PROPERTY OF A.A. HAYDEN.  PASS HOUSE AND CONTINUE THROUGH FARM TO
 HV7088'DRAW WITH OLD BARN IN LOWER END OF IT.  GATE TO BEACH IS AT
 HV7088'BOTTOM OF DRAW.  MARK IS 160 STEPS DOWN BEACH FROM CENTER OF THIS
 HV7088'GATE.
 HV7088'
 HV7088'HEIGHT OF SIGNAL ABOVE STATION MARK - 1.4 METERS.
 HV7088
 HV7088                          STATION RECOVERY (1942)
 HV7088
 HV7088'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7088'STATION SEARCHED FOR BUT NOT FOUND.  REFERENCE MARK NO.1 AND NO.2
 HV7088'RECOVERED AS DESCRIBED BUT FOR THE FOLLOWING EXCEPTION--
 HV7088'
 HV7088'THE OLD BARN IN THE DRAW IS GONE.
 HV7088
 HV7088                          STATION RECOVERY (1958)
 HV7088
 HV7088'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV7088'THIS STATION WAS DESTROYED.  THE MONUMENT WAS FOUND OVERTURNED,
 HV7088'WITH THE DISK MISSING.  BOTH REFERENCE MARKS WERE LOCATED LYING ON
 HV7088'THE BEACH AND THE DISKS WERE REMOVED BY THIS PARTY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7089 ***********************************************************************
 HV7089  DESIGNATION -  FIRST 2
 HV7089  PID         -  HV7089
 HV7089  STATE/COUNTY-  MD/CHARLES
 HV7089  COUNTRY     -  US
 HV7089  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV7089
 HV7089                         *CURRENT SURVEY CONTROL
 HV7089  ______________________________________________________________________
 HV7089* NAD 83(1993) POSITION- 38 22 23.40388(N) 076 58 53.04786(W)   ADJUSTED
 HV7089* NAVD 88 ORTHO HEIGHT -    42.9   (meters)      141.    (feet) VERTCON3
 HV7089  ______________________________________________________________________
 HV7089  GEOID HEIGHT    -        -33.399 (meters)                     GEOID18
 HV7089  LAPLACE CORR    -         -3.91  (seconds)                    DEFLEC18
 HV7089  HORZ ORDER      -  SECOND
 HV7089
 HV7089.The horizontal coordinates were established by classical geodetic methods
 HV7089.and adjusted by the National Geodetic Survey in November 1994.
 HV7089
 HV7089.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7089.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7089
 HV7089.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7089.GEOID18 height accuracy estimate available here.
 HV7089
 HV7089.Click photographs - Photos may exist for this station.
 HV7089
 HV7089.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7089
 HV7089. The following values were computed from the NAD 83(1993) position.
 HV7089
 HV7089;                    North         East     Units Scale Factor Converg.
 HV7089;SPC MD       -    78,424.799   401,625.160   MT  0.99998808   +0 00 42.0
 HV7089;SPC MD       -   257,298.69  1,317,665.21   sFT  0.99998808   +0 00 42.0
 HV7089;SPC VA N     - 2,079,517.593 3,632,691.759   MT  0.99995743   +0 56 52.0
 HV7089;SPC VA N     - 6,822,550.64 11,918,256.21   sFT  0.99995743   +0 56 52.0
 HV7089;UTM  18      - 4,249,078.367   326,915.405   MT  0.99996895   -1 13 49.2
 HV7089
 HV7089!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7089!SPC MD       -   0.99999852  x   0.99998808  =   0.99998660
 HV7089!SPC VA N     -   0.99999852  x   0.99995743  =   0.99995595
 HV7089!UTM  18      -   0.99999852  x   0.99996895  =   0.99996747
 HV7089
 HV7089:                Primary Azimuth Mark                     Grid Az
 HV7089:SPC MD       -  FIRST 2 AZ MK                            341 27 18.6
 HV7089:SPC VA N     -  FIRST 2 AZ MK                            340 31 08.6
 HV7089:UTM  18      -  FIRST 2 AZ MK                            342 41 49.8
 HV7089
 HV7089_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2691549078(NAD 83)
 HV7089
 HV7089|---------------------------------------------------------------------|
 HV7089| PID    Reference Object                     Distance      Geod. Az  |
 HV7089|                                                           dddmmss.s |
 HV7089| CX2764 FIRST 2 RM 1                         10.811 METERS 11939     |
 HV7089| HV7092 POTOMAC RIVER BRIDGE RED LIGHT      APPROX. 1.4 KM 2141401.2 |
 HV7089| CX2765 FIRST 2 RM 2                         11.128 METERS 25608     |
 HV7089| HV5376 PERSIMMON POINT SHOAL LIGHT         APPROX. 1.7 KM 2620713.0 |
 HV7089| CX2763 FIRST 2 AZ MK                                      3412800.6 |
 HV7089|---------------------------------------------------------------------|
 HV7089
 HV7089                          SUPERSEDED SURVEY CONTROL
 HV7089
 HV7089  NAD 83(1991)-  38 22 23.40433(N)    076 58 53.05266(W) AD(       ) 2
 HV7089  NAD 83(1986)-  38 22 23.40406(N)    076 58 53.06288(W) AD(       ) 2
 HV7089  NAD 27      -  38 22 22.94800(N)    076 58 54.15700(W) AD(       ) 2
 HV7089  NGVD 29 (07/19/86)   43.1    (m)          141.     (f) VERT ANG       
 HV7089
 HV7089.Superseded values are not recommended for survey control.
 HV7089
 HV7089.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7089.See file dsdata.pdf to determine how the superseded data were derived.
 HV7089
 HV7089_MARKER: DS = TRIANGULATION STATION DISK
 HV7089_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7089_STAMPING: FIRST 2 1962
 HV7089_MARK LOGO: CGS
 HV7089_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7089+STABILITY: SURFACE MOTION
 HV7089
 HV7089  HISTORY     - Date     Condition        Report By
 HV7089  HISTORY     - 1962     MONUMENTED       CGS
 HV7089
 HV7089                          STATION DESCRIPTION
 HV7089
 HV7089'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (DGR)
 HV7089'STATION IS LOCATED IN A FIELD ON HAYDEN RESIDENCE ON THE NORTHERN
 HV7089'SIDE OF THE POTOMAC APPROXIMATELY 1 MILE NORTH OF THE POTOMAC
 HV7089'RIVER BRIDGE.  TO REACH THIS STATION FROM THE MARYLAND SIDE OF THE
 HV7089'POTOMAC RIVER BRIDGE PROCEED NORTHERLY ON U.S. 301 FOR 0.7 MILES
 HV7089'TO TOWN OF NEWBURY AND SIDE ROAD LEFT (EDGE HILL ROAD). TAKE ROAD
 HV7089'LEFT AND PROCEED NW ON EDGE HILL ROAD FOR 1.0 MILES TO ITS
 HV7089'INTERSECTION WITH POPES CREEK ROAD.  TURN LEFT AND PROCEED
 HV7089'WESTERLY ON POPES CREEK ROAD, FOR 1.5 MILES TO CURVE IN ROAD AND A
 HV7089'SECONDARY SIDEROAD LEFT.  TAKE ROAD LEFT AND PROCEED SOUTHERLY FOR
 HV7089'1.55 MILES TO STATION.  STATION IS 0.65 MILES SOUTH OF THE HAYDEN
 HV7089'RESIDENCE ON A HILL APPROXIMATELY 53 YARDS EAST OF THE FARM ROAD
 HV7089'THAT RUNS NORTH AND SOUTH. WITNESS POST MARKS VICINITY OF THE
 HV7089'STATION.  STATION IS A STANDARD DISK SET IN A CONCRETE POST
 HV7089'PROJECTING 3 INCHES ABOVE THE GROUND.  IT IS STAMPED FIRST 2 1962.
 HV7089'
 HV7089'REFERENCE MARKER NO. 1 IS A STANDARD DISK SET IN A TILE PROJECTING
 HV7089'3 INCHES ABOVE THE GROUND.  IT IS STAMPED--FIRST 2 NO. 1 1962 AND
 HV7089'IS 35.48 FEET EAST OF STATION.  REFERENCE MARKER NO 2 IS A
 HV7089'STANDARD DISK SET IN A TILE PROJECTING 4 INCHES ABOVE THE GROUND.
 HV7089'IT IS 36.51 FEET WEST OF THE STATION.  IT IS STAMPED--FIRST NO 2 1962.
 HV7089'
 HV7089'THE AZIMUTH MARK IS 0.5 MILES NORTH OF STATION, 100 FEET SE OF SE
 HV7089'CORNER OF TENANT HOUSE 12 FEET E OF CENTER LINE OF ROAD.  IT IS A
 HV7089'STANDARD DISK SET IN A TILE FLUSH WITH THE GROUND.  IT IS
 HV7089'STAMPED--FIRST 2 1962.
 HV7089'
 HV7089'THIS IS A GROUND STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5401 ***********************************************************************
 JV5401  DESIGNATION -  FISCHER
 JV5401  PID         -  JV5401
 JV5401  STATE/COUNTY-  MD/BALTIMORE
 JV5401  COUNTRY     -  US
 JV5401  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5401
 JV5401                         *CURRENT SURVEY CONTROL
 JV5401  ______________________________________________________________________
 JV5401* NAD 83(1991) POSITION- 39 16 37.34072(N) 076 27 24.29155(W)   ADJUSTED
 JV5401* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5401  ______________________________________________________________________
 JV5401  GEOID HEIGHT    -        -33.007 (meters)                     GEOID18
 JV5401  LAPLACE CORR    -         -1.39  (seconds)                    DEFLEC18
 JV5401  HORZ ORDER      -  SECOND
 JV5401
 JV5401.The horizontal coordinates were established by classical geodetic methods
 JV5401.and adjusted by the National Geodetic Survey in January 1992.
 JV5401
 JV5401.The orthometric height was scaled from a topographic map.
 JV5401
 JV5401.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5401.GEOID18 height accuracy estimate available here.
 JV5401
 JV5401.Click photographs - Photos may exist for this station.
 JV5401
 JV5401.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5401
 JV5401. The following values were computed from the NAD 83(1991) position.
 JV5401
 JV5401;                    North         East     Units Scale Factor Converg.
 JV5401;SPC MD       -   178,900.852   446,874.448   MT  0.99997432   +0 20 27.5
 JV5401;SPC MD       -   586,943.88  1,466,120.58   sFT  0.99997432   +0 20 27.5
 JV5401;UTM  18      - 4,348,531.997   374,348.335   MT  0.99979440   -0 55 20.4
 JV5401
 JV5401!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5401!SPC MD       -   1.00000506  x   0.99997432  =   0.99997938
 JV5401!UTM  18      -   1.00000506  x   0.99979440  =   0.99979946
 JV5401
 JV5401:                Primary Azimuth Mark                     Grid Az
 JV5401:SPC MD       -  COX                                      336 28 11.4
 JV5401:UTM  18      -  COX                                      337 43 59.3
 JV5401
 JV5401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7434848531(NAD 83)
 JV5401
 JV5401|---------------------------------------------------------------------|
 JV5401| PID    Reference Object                     Distance      Geod. Az  |
 JV5401|                                                           dddmmss.s |
 JV5401| CA9428 FISCHER RM 1                         20.015 METERS 18640     |
 JV5401| JV5398 COX                                 APPROX. 1.9 KM 3364838.9 |
 JV5401|---------------------------------------------------------------------|
 JV5401
 JV5401                          SUPERSEDED SURVEY CONTROL
 JV5401
 JV5401  NAD 83(1986)-  39 16 37.33625(N)    076 27 24.30022(W) AD(       ) 2
 JV5401  NAD 27      -  39 16 36.95000(N)    076 27 25.44800(W) AD(       ) 2
 JV5401
 JV5401.Superseded values are not recommended for survey control.
 JV5401
 JV5401.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5401.See file dsdata.pdf to determine how the superseded data were derived.
 JV5401
 JV5401_MARKER: DS = TRIANGULATION STATION DISK
 JV5401_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5401_STAMPING: FISCHER 1934
 JV5401_MARK LOGO: CGS
 JV5401_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5401+STABILITY: SURFACE MOTION
 JV5401
 JV5401  HISTORY     - Date     Condition        Report By
 JV5401  HISTORY     - 1934     MONUMENTED       CGS
 JV5401  HISTORY     - 1974     GOOD             MDDNR
 JV5401
 JV5401                          STATION DESCRIPTION
 JV5401
 JV5401'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5401'ON SOUTHERN SHORE OF BACK RIVER, ON FIRST SMALL POINT, 1/2 MILE
 JV5401'NW OF STANSBURY POINT.  STATION IS IN YARD ABOUT MIDWAY OF STONE
 JV5401'RETAINING WALL AND 3 FEET FROM WALL.
 JV5401'
 JV5401'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5401'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5401'
 JV5401'REFERENCE MARK IS 72 FEET SE FROM STATION AND 3 FEET FROM NE
 JV5401'CORNER OF SUMMER COTTAGE.
 JV5401
 JV5401                          STATION RECOVERY (1974)
 JV5401
 JV5401'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 JV5401'FISCHER 1934 GOOD
 JV5401'
 JV5401'FISCHER NO1 1934 GOOD
 JV5401'
 JV5401'STA. RECOVD AS DESCRIBED EXPOSED 6 IN MR. RICHARD SAKOWSKI STATED
 JV5401'THE RM IS STILL IN PLACE BELOW SURFACE OF LAWN AND DID NOT DIG FOR
 JV5401'IT.  STA. LOCATED AT 4068 BEACH RD. 2ND HSE. FROM POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6409 ***********************************************************************
 HV6409  DESIGNATION -  FISH
 HV6409  PID         -  HV6409
 HV6409  STATE/COUNTY-  MD/DORCHESTER
 HV6409  COUNTRY     -  US
 HV6409  USGS QUAD   -  WINGATE (2016)
 HV6409
 HV6409                         *CURRENT SURVEY CONTROL
 HV6409  ______________________________________________________________________
 HV6409* NAD 83(1991) POSITION- 38 18 32.46772(N) 076 00 59.88085(W)   ADJUSTED
 HV6409* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6409  ______________________________________________________________________
 HV6409  GEOID HEIGHT    -        -35.491 (meters)                     GEOID18
 HV6409  LAPLACE CORR    -         -2.11  (seconds)                    DEFLEC18
 HV6409  HORZ ORDER      -  THIRD
 HV6409
 HV6409.The horizontal coordinates were established by classical geodetic methods
 HV6409.and adjusted by the National Geodetic Survey in January 1992.
 HV6409
 HV6409.The orthometric height was scaled from a topographic map.
 HV6409
 HV6409.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6409.GEOID18 height accuracy estimate available here.
 HV6409
 HV6409.Click photographs - Photos may exist for this station.
 HV6409
 HV6409.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6409
 HV6409. The following values were computed from the NAD 83(1991) position.
 HV6409
 HV6409;                    North         East     Units Scale Factor Converg.
 HV6409;SPC MD       -    71,767.198   486,006.004   MT  0.99999844   +0 37 01.9
 HV6409;SPC MD       -   235,456.22  1,594,504.70   sFT  0.99999844   +0 37 01.9
 HV6409;UTM  18      - 4,240,591.057   411,117.044   MT  0.99969729   -0 37 48.9
 HV6409
 HV6409!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6409!SPC MD       -   1.00000561  x   0.99999844  =   1.00000405
 HV6409!UTM  18      -   1.00000561  x   0.99969729  =   0.99970289
 HV6409
 HV6409_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1111740591(NAD 83)
 HV6409
 HV6409                          SUPERSEDED SURVEY CONTROL
 HV6409
 HV6409  NAD 83(1986)-  38 18 32.46665(N)    076 00 59.90001(W) AD(       ) 3
 HV6409  NAD 27      -  38 18 32.00400(N)    076 01 01.11400(W) AD(       ) 3
 HV6409  USSD        -  38 18 32.42000(N)    076 01 00.87000(W) AD(       ) 3
 HV6409
 HV6409.Superseded values are not recommended for survey control.
 HV6409
 HV6409.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6409.See file dsdata.pdf to determine how the superseded data were derived.
 HV6409
 HV6409_MARKER: Z = SEE DESCRIPTION
 HV6409_SETTING: 0 = UNSPECIFIED SETTING
 HV6409_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6409
 HV6409  HISTORY     - Date     Condition        Report By
 HV6409  HISTORY     - 1901     MONUMENTED       CGS
 HV6409
 HV6409                          STATION DESCRIPTION
 HV6409
 HV6409'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (WIV)
 HV6409'STATION IS ON THE EASTERN SIDE OF FISHING BAY, ON SW SIDE OF
 HV6409'FISHING POINT, ELLIOTT ISLAND.  MARKED BY A BRACED POLE SIGNAL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7118 ***********************************************************************
 HV7118  DESIGNATION -  FISH
 HV7118  PID         -  HV7118
 HV7118  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7118  COUNTRY     -  US
 HV7118  USGS QUAD   -  SOUTH RIVER (2016)
 HV7118
 HV7118                         *CURRENT SURVEY CONTROL
 HV7118  ______________________________________________________________________
 HV7118* NAD 83(1993) POSITION- 38 55 26.59277(N) 076 30 01.91286(W)   ADJUSTED
 HV7118* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7118  ______________________________________________________________________
 HV7118  GEOID HEIGHT    -        -33.406 (meters)                     GEOID18
 HV7118  LAPLACE CORR    -         -3.58  (seconds)                    DEFLEC18
 HV7118  HORZ ORDER      -  THIRD
 HV7118
 HV7118.The horizontal coordinates were established by classical geodetic methods
 HV7118.and adjusted by the National Geodetic Survey in November 1994.
 HV7118
 HV7118.The orthometric height was scaled from a topographic map.
 HV7118
 HV7118.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7118.GEOID18 height accuracy estimate available here.
 HV7118
 HV7118.Click photographs - Photos may exist for this station.
 HV7118
 HV7118.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7118
 HV7118. The following values were computed from the NAD 83(1993) position.
 HV7118
 HV7118;                    North         East     Units Scale Factor Converg.
 HV7118;SPC MD       -   139,693.928   443,311.016   MT  0.99995020   +0 18 48.5
 HV7118;SPC MD       -   458,312.50  1,454,429.56   sFT  0.99995020   +0 18 48.5
 HV7118;UTM  18      - 4,309,419.074   369,924.406   MT  0.99980834   -0 56 34.4
 HV7118
 HV7118!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7118!SPC MD       -   1.00000512  x   0.99995020  =   0.99995532
 HV7118!UTM  18      -   1.00000512  x   0.99980834  =   0.99981346
 HV7118
 HV7118:                Primary Azimuth Mark                     Grid Az
 HV7118:SPC MD       -  JERRY                                    161 20 05.0
 HV7118:UTM  18      -  JERRY                                    162 35 27.9
 HV7118
 HV7118_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6992409419(NAD 83)
 HV7118
 HV7118|---------------------------------------------------------------------|
 HV7118| PID    Reference Object                     Distance      Geod. Az  |
 HV7118|                                                           dddmmss.s |
 HV7118| CX2766 FISH RM 1                                          07040     |
 HV7118| HV6327 JERRY                               APPROX. 1.7 KM 1613853.5 |
 HV7118|---------------------------------------------------------------------|
 HV7118
 HV7118                          SUPERSEDED SURVEY CONTROL
 HV7118
 HV7118  NAD 83(1991)-  38 55 26.59354(N)    076 30 01.91265(W) AD(       ) 3
 HV7118  NAD 83(1986)-  38 55 26.58939(N)    076 30 01.92390(W) AD(       ) 3
 HV7118  NAD 27      -  38 55 26.15800(N)    076 30 03.04600(W) AD(       ) 3
 HV7118
 HV7118.Superseded values are not recommended for survey control.
 HV7118
 HV7118.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7118.See file dsdata.pdf to determine how the superseded data were derived.
 HV7118
 HV7118_MARKER: DS = TRIANGULATION STATION DISK
 HV7118_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7118
 HV7118  HISTORY     - Date     Condition        Report By
 HV7118  HISTORY     - 1961     MONUMENTED       CGS
 HV7118  HISTORY     - 1977     GOOD             NGS
 HV7118
 HV7118                          STATION DESCRIPTION
 HV7118
 HV7118'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (GFW)
 HV7118'THE STATION IS LOCATED ON HILL POINT ON THE NORTHWEST SIDE OF THE
 HV7118'SOUTH RIVER IN THE FRONT LAWN OF A SHINGLED HOUSE WITH TWO GABLES
 HV7118'FACING SOUTH.  THE HOUSE AND PROPERTY BELONGS TO MR. JOHN J. HARBOR.
 HV7118'
 HV7118'THE STATION IS BETWEEN TWO SMALL SILVER MAPLES ON THE WEST SIDE OF
 HV7118'THE LAWN, 73.9 FEET FROM THE SOUTHEAST CORNER OF THE HOUSE AND
 HV7118'47.26 FEET FROM THE SOUTHWEST CORNER OF THE HOUSE.  THE STATION IS
 HV7118'18.4 FEET FROM THE INSIDE CORNER OF A ONE FOOT DECREASE IN THE
 HV7118'CONCRETE SEA WALL ON THE SOUTHWEST SIDE OF THE LAWN.
 HV7118'
 HV7118'THE REFERENCE MARK IS AT THE CORNER OF THE HOUSE AND A SMALL
 HV7118'CONCRETE PORCH BY THE SOUTH FACING DOOR TO THE HOUSE.
 HV7118'
 HV7118'THE STATION AND REFERENCE MARK ARE STANDARD BRONZE DISKS AS
 HV7118'DESCRIBED, SET FLUSH WITH THE GROUND AND STAMPED FISH 1961 AND
 HV7118'FISH NO 1 1961 RESPECTIVELY.
 HV7118'
 HV7118'TO REACH THE STATION FROM THE INTERSECTIONS OF FOREST DRIVE AND
 HV7118'HILLSMERE ROAD, DRIVE SOUTH 1.55 MILES ON HILLSMERE ROAD TO GREEN
 HV7118'SPRING DRIVE.  GO RIGHT ON GREEN SPRING DRIVE .25 MILES TO
 HV7118'RIVERSIDE DRIVE.  FOLLOW RIVERSIDE DRIVE TO THE LEFT .15 MILES TO
 HV7118'POINT AND HENCE TO STATION.
 HV7118
 HV7118                          STATION RECOVERY (1977)
 HV7118
 HV7118'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HV7118'STATION WAS NOT OCCUPIED AT THIS TIME.
 HV7118'
 HV7118'THE STATION MARK AND REFERENCE MARK 1 WERE RECOVERED IN GOOD
 HV7118'CONDITION.
 HV7118'
 HV7118'STATION IS LOCATED 4 MILES SOUTH OF ANNAPOLIS, ON THE NORTH SHORE
 HV7118'OF THE SOUTH RIVER, AT THE HILLSMERE ESTATES, ON HILL POINT, IN
 HV7118'THE LAWN OF MR. THOMPSONS RESIDENCE.
 HV7118'
 HV7118'TO REACH THE STATION FROM THE INTERSECTION OF FOREST DRIVE AND
 HV7118'HILLSMERE ROAD, GO SOUTHERLY ON HILLSMERE ROAD FOR 1.65 MILES TO A
 HV7118'T INTERSECTION, TURN RIGHT, GO SOUTHWEST ON BAYVIEW DRIVE FOR 0.35
 HV7118'MILE TO RIVERSIDE DRIVE, TURN LEFT, GO SOUTH FOR 0.1 MILE TO MR
 HV7118'THOMPSONS HOUSE AND STATION IN THE BACK LAWN.
 HV7118'
 HV7118'STATION MARK IS A STANDARD DISK SET TOP OF A 10 INCH ROUND
 HV7118'CONCRETE MONUMENT ABOUT 3 INCHES BELOW THE GROUND AND IS STAMPED
 HV7118'FISH 1961.  IT IS 73.9 FEET WEST OF SOUTHEAST CORNER OF HOUSE,
 HV7118'58.2 FEET WEST OF BIRD HOUSE ON 10 FOOT POLE, 49.2 FEET SOUTHWEST
 HV7118'OF THE SOUTHWEST CORNER OF HOUSE, 18.3 FEET EAST OF INSIDE EDGE OF
 HV7118'RETAINING WALL, 16.2 FEET SOUTHWEST OF A BIRD HOUSE ON A 10 FOOT
 HV7118'POLE AND 5.3 FEET EAST-SOUTHEAST OF SIDEWALK EDGE.
 HV7118'
 HV7118'REFERENCE MARK 1 IS A STANDARD DISK SET IN TOP OF A 6 INCH ROUND
 HV7118'CONCRETE MONUMENT ABOUT 3 INCHES BELOW THE GROUND AND IS STAMPED
 HV7118'FISH NO 1 1961.  IT IS 3.9 FEET SOUTHEAST OF WINDOW WELL, 3.3 FEET
 HV7118'NORTH OF SOUTHWEST CORNER OF STEP, 2.2 FEET SOUTHWEST OF CORNER OF
 HV7118'STEP AND HOUSE, 1.4 FEET WEST OF EDGE OF STEP AND 61.94 FEET
 HV7118'NORTHEAST OF STATION.
 HV7118'
 HV7118'NO AZIMUTH MARK AT THIS STATION.
 HV7118'
 HV7118'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN IN HILLSMERE ESTATES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7212 ***********************************************************************
 JV7212  DESIGNATION -  FISH
 JV7212  PID         -  JV7212
 JV7212  STATE/COUNTY-  MD/FREDERICK
 JV7212  COUNTRY     -  US
 JV7212  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV7212
 JV7212                         *CURRENT SURVEY CONTROL
 JV7212  ______________________________________________________________________
 JV7212* NAD 83(2011) POSITION- 39 34 24.08874(N) 077 29 02.49381(W)   ADJUSTED
 JV7212* NAD 83(2011) ELLIP HT-   485.077 (meters)        (06/27/12)   ADJUSTED
 JV7212* NAD 83(2011) EPOCH   -  2010.00
 JV7212* NAVD 88 ORTHO HEIGHT -   518.2   (meters)     1700.    (feet) GPS OBS
 JV7212  ______________________________________________________________________
 JV7212  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7212  GEOID HEIGHT    -        -33.400 (meters)                     GEOID93
 JV7212  GEOID HEIGHT    -        -33.055 (meters)                     GEOID18
 JV7212  NAD 83(2011) X  -  1,066,957.800 (meters)                     COMP
 JV7212  NAD 83(2011) Y  - -4,806,393.753 (meters)                     COMP
 JV7212  NAD 83(2011) Z  -  4,041,893.820 (meters)                     COMP
 JV7212  LAPLACE CORR    -          2.67  (seconds)                    DEFLEC18
 JV7212
 JV7212  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7212  Standards:
 JV7212         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7212            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7212  -------------------------------------------------------------------
 JV7212  NETWORK    1.78   2.00           0.72   0.72   1.02      0.30645022
 JV7212  -------------------------------------------------------------------
 JV7212  Click here for local accuracies and other accuracy information.
 JV7212
 JV7212.The horizontal coordinates were established by GPS observations
 JV7212.and adjusted by the National Geodetic Survey in June 2012.
 JV7212
 JV7212.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7212.been affixed to the stable North American tectonic plate. See 
 JV7212.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7212
 JV7212.The horizontal coordinates are valid at the epoch date displayed above
 JV7212.which is a decimal equivalence of Year/Month/Day.
 JV7212
 JV7212.The orthometric height was determined by GPS observations and a
 JV7212.high-resolution geoid model.
 JV7212
 JV7212.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7212.GEOID18 height accuracy estimate available here.
 JV7212
 JV7212.Click photographs - Photos may exist for this station.
 JV7212
 JV7212.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7212
 JV7212.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7212
 JV7212.The ellipsoidal height was determined by GPS observations
 JV7212.and is referenced to NAD 83.
 JV7212
 JV7212. The following values were computed from the NAD 83(2011) position.
 JV7212
 JV7212;                    North         East     Units Scale Factor Converg.
 JV7212;SPC MD       -   211,769.926   358,410.263   MT  1.00002391   -0 18 13.6
 JV7212;SPC MD       -   694,781.83  1,175,884.34   sFT  1.00002391   -0 18 13.6
 JV7212;UTM  18      - 4,383,353.383   286,637.848   MT  1.00016051   -1 34 59.1
 JV7212
 JV7212!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7212!SPC MD       -   0.99992390  x   1.00002391  =   0.99994781
 JV7212!UTM  18      -   0.99992390  x   1.00016051  =   1.00008440
 JV7212
 JV7212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8663783353(NAD 83)
 JV7212
 JV7212                          SUPERSEDED SURVEY CONTROL
 JV7212
 JV7212  NAD 83(2007)-  39 34 24.08913(N)    077 29 02.49434(W) AD(2002.00) 0
 JV7212  ELLIP H (02/10/07)  485.098  (m)                       GP(2002.00)    
 JV7212  ELLIP H (08/30/02)  485.100  (m)                       GP(       ) 4 2
 JV7212  NAD 83(1991)-  39 34 24.08968(N)    077 29 02.49427(W) AD(       ) 1
 JV7212  ELLIP H (02/09/94)  485.034  (m)                       GP(       ) 4 1
 JV7212
 JV7212.Superseded values are not recommended for survey control.
 JV7212
 JV7212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7212.See file dsdata.pdf to determine how the superseded data were derived.
 JV7212
 JV7212_MARKER: DD = SURVEY DISK
 JV7212_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7212_STAMPING: FISH 1993
 JV7212_MARK LOGO: MD-021
 JV7212_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7212_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7212+STABILITY: SURFACE MOTION
 JV7212_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7212+SATELLITE: SATELLITE OBSERVATIONS - April 15, 2025
 JV7212
 JV7212  HISTORY     - Date     Condition        Report By
 JV7212  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7212  HISTORY     - 20010205 GOOD             GEOMET
 JV7212  HISTORY     - 20250415 GOOD             MD0580
 JV7212
 JV7212                          STATION DESCRIPTION
 JV7212
 JV7212'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7212'FROM FREDERICK, MD, PROCEED WEST ON US RTE 40 TO GAMBRILL PARK ROAD.
 JV7212'TURN RIGHT AND PROCEED NORTH ON GAMBRILL PARK ROAD 9.8 MILES
 JV7212'(15.8 KM) TO A TEE INTERSECTION WITH FISHING CREEK ROAD. INTERSECTION
 JV7212'IS 1 MILE (1.6 KM) PAST THE END OF THE PAVED PORTION OF GAMBRILL PARK
 JV7212'ROAD. STATION IS 54 FEET (16.5 M) WEST OF CENTERLINE OF FISHING CREEK
 JV7212'ROAD AND 21 FEET (6.4 M) SOUTH OF CENTERLINE OF GAMBRILL PARK ROAD.
 JV7212'STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND CONCRETE
 JV7212'MONUMENT SET FLUSH WITH THE GROUND.
 JV7212
 JV7212                          STATION RECOVERY (2001)
 JV7212
 JV7212'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2001 (CG)
 JV7212'RECOVERED IN GOOD CONDITION.
 JV7212
 JV7212                          STATION RECOVERY (2025)
 JV7212
 JV7212'RECOVERY NOTE BY CITY OF FREDERICK MARYLAND 2025 (CK)
 JV7212'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ3499 ***********************************************************************
 DJ3499  DESIGNATION -  FISH
 DJ3499  PID         -  DJ3499
 DJ3499  STATE/COUNTY-  MD/TALBOT
 DJ3499  COUNTRY     -  US
 DJ3499  USGS QUAD   -  CAMBRIDGE (2016)
 DJ3499
 DJ3499                         *CURRENT SURVEY CONTROL
 DJ3499  ______________________________________________________________________
 DJ3499* NAD 83(2011) POSITION- 38 35 28.92688(N) 076 02 48.83374(W)   ADJUSTED
 DJ3499* NAD 83(2011) ELLIP HT-   -31.455 (meters)        (06/27/12)   ADJUSTED
 DJ3499* NAD 83(2011) EPOCH   -  2010.00
 DJ3499* NAVD 88 ORTHO HEIGHT -     3.6   (meters)       12.    (feet) GPS OBS
 DJ3499  ______________________________________________________________________
 DJ3499  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DJ3499  GEOID HEIGHT    -        -35.020 (meters)                     GEOID03
 DJ3499  GEOID HEIGHT    -        -35.047 (meters)                     GEOID18
 DJ3499  NAD 83(2011) X  -  1,203,642.557 (meters)                     COMP
 DJ3499  NAD 83(2011) Y  - -4,844,435.835 (meters)                     COMP
 DJ3499  NAD 83(2011) Z  -  3,956,942.368 (meters)                     COMP
 DJ3499  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 DJ3499
 DJ3499  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ3499  Standards:
 DJ3499         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ3499            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ3499  -------------------------------------------------------------------
 DJ3499  NETWORK    2.15   3.49           0.74   0.98   1.78     -0.11807408
 DJ3499  -------------------------------------------------------------------
 DJ3499  Click here for local accuracies and other accuracy information.
 DJ3499
 DJ3499.The horizontal coordinates were established by GPS observations
 DJ3499.and adjusted by the National Geodetic Survey in June 2012.
 DJ3499
 DJ3499.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ3499.been affixed to the stable North American tectonic plate. See 
 DJ3499.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ3499
 DJ3499.The horizontal coordinates are valid at the epoch date displayed above
 DJ3499.which is a decimal equivalence of Year/Month/Day.
 DJ3499
 DJ3499.The orthometric height was determined by GPS observations and a
 DJ3499.high-resolution geoid model.
 DJ3499
 DJ3499.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ3499.GEOID18 height accuracy estimate available here.
 DJ3499
 DJ3499.Click photographs - Photos may exist for this station.
 DJ3499
 DJ3499.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ3499
 DJ3499.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ3499
 DJ3499.The ellipsoidal height was determined by GPS observations
 DJ3499.and is referenced to NAD 83.
 DJ3499
 DJ3499. The following values were computed from the NAD 83(2011) position.
 DJ3499
 DJ3499;                    North         East     Units Scale Factor Converg.
 DJ3499;SPC MD       -   103,078.974   483,031.911   MT  0.99996210   +0 35 53.5
 DJ3499;SPC MD       -   338,184.93  1,584,747.19   sFT  0.99996210   +0 35 53.5
 DJ3499;UTM  18      - 4,271,951.500   408,826.996   MT  0.99970236   -0 39 11.0
 DJ3499
 DJ3499!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ3499!SPC MD       -   1.00000494  x   0.99996210  =   0.99996704
 DJ3499!UTM  18      -   1.00000494  x   0.99970236  =   0.99970729
 DJ3499
 DJ3499_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0882671951(NAD 83)
 DJ3499
 DJ3499                          SUPERSEDED SURVEY CONTROL
 DJ3499
 DJ3499  NAD 83(2007)-  38 35 28.92715(N)    076 02 48.83476(W) AD(2002.00) 1
 DJ3499  ELLIP H (04/02/09)  -31.439  (m)                       GP(2002.00) 4 1
 DJ3499  NAD 83(1991)-  38 35 28.92692(N)    076 02 48.83439(W) AD(       ) 1
 DJ3499  ELLIP H (10/15/07)  -31.415  (m)                       GP(       ) 4 1
 DJ3499
 DJ3499.Superseded values are not recommended for survey control.
 DJ3499
 DJ3499.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ3499.See file dsdata.pdf to determine how the superseded data were derived.
 DJ3499
 DJ3499_MARKER: DD = SURVEY DISK
 DJ3499_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ3499_STAMPING: FISH 1990
 DJ3499_MARK LOGO: MDSHA
 DJ3499_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ3499_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ3499+STABILITY: SURFACE MOTION
 DJ3499_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ3499+SATELLITE: SATELLITE OBSERVATIONS - June 24, 2002
 DJ3499
 DJ3499  HISTORY     - Date     Condition        Report By
 DJ3499  HISTORY     - 1990     MONUMENTED       MDSHA
 DJ3499  HISTORY     - 20020624 GOOD             MDSHA
 DJ3499
 DJ3499                          STATION DESCRIPTION
 DJ3499
 DJ3499'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 DJ3499'THE MARK IS ABOUT 3.2 MI (5.1 KM) NORTHWEST OF CAMBRIDGE NEAR THE
 DJ3499'NORTHWEST END OF OLD US ROUTE 50 BRIDGE OVER THE CHOPTANK RIVER (NOW
 DJ3499'USED AS A FISHING PIER).
 DJ3499'
 DJ3499'IT IS 117.5 FT (35.8 M) NORTHWEST OF THE NORTHEAST CORNER OF THE OLD
 DJ3499'US ROUTE 50 BRIDGE, 22.5 FT (6.9 M) EAST OF THE CENTER LINE OF OLD US
 DJ3499'ROUTE 50, 3.0 FT (0.9 M) EAST OF A METAL GUARD RAIL, 14.5 FT (4.4 M)
 DJ3499'NORTH OF THE CENTER LINE OF A FOOT PATH AND SET IN THE TOP OF A 9-IN
 DJ3499'(23 CM) ROUND CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3175 ***********************************************************************
 DI3175  DESIGNATION -  FISH 1
 DI3175  PID         -  DI3175
 DI3175  STATE/COUNTY-  MD/DORCHESTER
 DI3175  COUNTRY     -  US
 DI3175  USGS QUAD   -  HONGA (2016)
 DI3175
 DI3175                         *CURRENT SURVEY CONTROL
 DI3175  ______________________________________________________________________
 DI3175* NAD 83(2011) POSITION- 38 20 45.13865(N) 076 13 38.34152(W)   ADJUSTED
 DI3175* NAD 83(2011) ELLIP HT-   -33.760 (meters)        (06/27/12)   ADJUSTED
 DI3175* NAD 83(2011) EPOCH   -  2010.00
 DI3175* NAVD 88 ORTHO HEIGHT -     1.3   (meters)        4.    (feet) GPS OBS
 DI3175  ______________________________________________________________________
 DI3175  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3175  GEOID HEIGHT    -        -35.034 (meters)                     GEOID03
 DI3175  GEOID HEIGHT    -        -35.076 (meters)                     GEOID18
 DI3175  NAD 83(2011) X  -  1,192,417.452 (meters)                     COMP
 DI3175  NAD 83(2011) Y  - -4,864,665.434 (meters)                     COMP
 DI3175  NAD 83(2011) Z  -  3,935,604.562 (meters)                     COMP
 DI3175  LAPLACE CORR    -         -6.20  (seconds)                    DEFLEC18
 DI3175
 DI3175  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3175  Standards:
 DI3175         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3175            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3175  -------------------------------------------------------------------
 DI3175  NETWORK    0.89   1.20           0.41   0.30   0.61      0.12332132
 DI3175  -------------------------------------------------------------------
 DI3175  Click here for local accuracies and other accuracy information.
 DI3175
 DI3175.The horizontal coordinates were established by GPS observations
 DI3175.and adjusted by the National Geodetic Survey in June 2012.
 DI3175
 DI3175.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3175.been affixed to the stable North American tectonic plate. See 
 DI3175.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3175
 DI3175.The horizontal coordinates are valid at the epoch date displayed above
 DI3175.which is a decimal equivalence of Year/Month/Day.
 DI3175
 DI3175.The orthometric height was determined by GPS observations and a
 DI3175.high-resolution geoid model.
 DI3175
 DI3175.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3175.GEOID18 height accuracy estimate available here.
 DI3175
 DI3175.Click photographs - Photos may exist for this station.
 DI3175
 DI3175.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3175
 DI3175.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3175
 DI3175.The ellipsoidal height was determined by GPS observations
 DI3175.and is referenced to NAD 83.
 DI3175
 DI3175. The following values were computed from the NAD 83(2011) position.
 DI3175
 DI3175;                    North         East     Units Scale Factor Converg.
 DI3175;SPC MD       -    75,680.589   467,545.332   MT  0.99999234   +0 29 05.9
 DI3175;SPC MD       -   248,295.40  1,533,938.31   sFT  0.99999234   +0 29 05.9
 DI3175;UTM  18      - 4,244,904.061   392,750.986   MT  0.99974165   -0 45 41.4
 DI3175
 DI3175!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3175!SPC MD       -   1.00000530  x   0.99999234  =   0.99999764
 DI3175!UTM  18      -   1.00000530  x   0.99974165  =   0.99974695
 DI3175
 DI3175_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9275044904(NAD 83)
 DI3175
 DI3175|---------------------------------------------------------------------|
 DI3175| PID    Reference Object                     Distance      Geod. Az  |
 DI3175|                                                           dddmmss.s |
 DI3175| DI3176 FISH 2                              289.971 METERS 23032     |
 DI3175|---------------------------------------------------------------------|
 DI3175
 DI3175                          SUPERSEDED SURVEY CONTROL
 DI3175
 DI3175  NAD 83(1991)-  38 20 45.13886(N)    076 13 38.34233(W) AD(       ) 1
 DI3175  ELLIP H (01/05/07)  -33.728  (m)                       GP(       ) 4 2
 DI3175
 DI3175.Superseded values are not recommended for survey control.
 DI3175
 DI3175.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3175.See file dsdata.pdf to determine how the superseded data were derived.
 DI3175
 DI3175_MARKER: DD = SURVEY DISK
 DI3175_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3175_STAMPING: FISH 1 2006
 DI3175_MARK LOGO: MD-019
 DI3175_PROJECTION: RECESSED 5 CENTIMETERS
 DI3175_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3175_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3175+STABILITY: SURFACE MOTION
 DI3175_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3175+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2014
 DI3175
 DI3175  HISTORY     - Date     Condition        Report By
 DI3175  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3175  HISTORY     - 20140328 GOOD             ARCSHE
 DI3175
 DI3175                          STATION DESCRIPTION
 DI3175
 DI3175'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3175'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR FISHING
 DI3175'CREEK, MARYLAND.   IT IS ABOUT 17.0 MI (27.3 KM) SOUTHWEST OF
 DI3175'CAMBRIDGE, MARYLAND, ABOUT 31.0 MI (49.9 KM)  SOUTHWEST OF EASTON,
 DI3175'MARYLAND AND ABOUT 34.2 MI (55.0 KM) WEST OF SALISBURY, MARYLAND.
 DI3175'
 DI3175'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3175'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHWEST ON US RTE 50 FOR 2.6 MI
 DI3175'(4.2 KM) TO INTERSECTION WITH SR  16 (CHURCH CREEK ROAD/ CAMBRIDGE
 DI3175'BYPASS).  TURN LEFT AND PROCEED 7.3 MI (11.7 KM)  SOUTHWEST TO
 DI3175'INTERSECTION WITH SR 335 (CHURCH CREEK- GOLDEN HILL ROAD).  TURN LEFT
 DI3175'AND  PROCEED 9.8 MI (15.8. KM) SOUTHWEST TO INTERSECTION WITH SR 336
 DI3175'(CRAPO ROAD).  TURN RIGHT  TO REMAIN ON SR 335 (HOOPER ISLAND ROAD)
 DI3175'AND PROCEED 6.6 MI (10.6 KM) SOUTHWEST TO THE  STATION ON THE LEFT.
 DI3175'STATION IS 4.0 FT (1.2 M) SOUTHEAST OF THE SOUTHEAST EDGE OF SR 335,
 DI3175'29.7 FT (9.0 M)  SOUTHWEST OF UTILITY POLE 513-109 AND 35.0 FT (10.7
 DI3175'M) SOUTHEAST OF UTILITY POLE CP 100.  A  3 IN BRASS DISK STAMPED FISH
 DI3175'1 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT RECESSED  0.20 FT
 DI3175'BELOW THE GROUND.
 DI3175
 DI3175                          STATION RECOVERY (2014)
 DI3175
 DI3175'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 DI3175'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1958 ***********************************************************************
 HU1958  DESIGNATION -  FISH 1910
 HU1958  PID         -  HU1958
 HU1958  STATE/COUNTY-  MD/DORCHESTER
 HU1958  COUNTRY     -  US
 HU1958  USGS QUAD   -  NANTICOKE (2016)
 HU1958
 HU1958                         *CURRENT SURVEY CONTROL
 HU1958  ______________________________________________________________________
 HU1958* NAD 83(1991) POSITION- 38 15 55.54887(N) 075 59 02.53777(W)   ADJUSTED
 HU1958* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1958  ______________________________________________________________________
 HU1958  GEOID HEIGHT    -        -35.593 (meters)                     GEOID18
 HU1958  LAPLACE CORR    -         -2.70  (seconds)                    DEFLEC18
 HU1958  HORZ ORDER      -  THIRD
 HU1958
 HU1958.The horizontal coordinates were established by classical geodetic methods
 HU1958.and adjusted by the National Geodetic Survey in January 1992.
 HU1958
 HU1958.The orthometric height was scaled from a topographic map.
 HU1958
 HU1958.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1958.GEOID18 height accuracy estimate available here.
 HU1958
 HU1958.Click photographs - Photos may exist for this station.
 HU1958
 HU1958.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1958
 HU1958. The following values were computed from the NAD 83(1991) position.
 HU1958
 HU1958;                    North         East     Units Scale Factor Converg.
 HU1958;SPC MD       -    66,960.290   488,910.545   MT  1.00000619   +0 38 15.5
 HU1958;SPC MD       -   219,685.55  1,604,034.01   sFT  1.00000619   +0 38 15.5
 HU1958;UTM  18      - 4,235,723.564   413,915.401   MT  0.99969126   -0 36 34.0
 HU1958
 HU1958!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1958!SPC MD       -   1.00000547  x   1.00000619  =   1.00001166
 HU1958!UTM  18      -   1.00000547  x   0.99969126  =   0.99969672
 HU1958
 HU1958:                Primary Azimuth Mark                     Grid Az
 HU1958:SPC MD       -  FROG                                     135 15 32.9
 HU1958:UTM  18      -  FROG                                     136 30 22.4
 HU1958
 HU1958_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1391535723(NAD 83)
 HU1958
 HU1958|---------------------------------------------------------------------|
 HU1958| PID    Reference Object                     Distance      Geod. Az  |
 HU1958|                                                           dddmmss.s |
 HU1958| HU1891 FROG                                APPROX. 4.5 KM 1355348.4 |
 HU1958|---------------------------------------------------------------------|
 HU1958
 HU1958                          SUPERSEDED SURVEY CONTROL
 HU1958
 HU1958  NAD 83(1986)-  38 15 55.54793(N)    075 59 02.55741(W) AD(       ) 3
 HU1958  NAD 27      -  38 15 55.11200(N)    075 59 03.79300(W) AD(       ) 3
 HU1958  USSD        -  38 15 55.49700(N)    075 59 03.55000(W) AD(       ) 3
 HU1958
 HU1958.Superseded values are not recommended for survey control.
 HU1958
 HU1958.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1958.See file dsdata.pdf to determine how the superseded data were derived.
 HU1958
 HU1958_MARKER: H = DRILL HOLE
 HU1958_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1958_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1958+STABILITY: SURFACE MOTION
 HU1958
 HU1958  HISTORY     - Date     Condition        Report By
 HU1958  HISTORY     - 1910     MONUMENTED       MDSFC
 HU1958  HISTORY     - 1932     MARK NOT FOUND   CGS
 HU1958
 HU1958                          STATION DESCRIPTION
 HU1958
 HU1958'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HU1958'STATION IS ON THE EASTERN SHORE OF FISHING BAY, ABOUT 4-3/4
 HU1958'MILES N OF SHARKFIN SHOAL LIGHT, 3-1/4 MILES S-SE OF ELLIOTT
 HU1958'ISLAND, AND 2-1/4 MILES N-NE OF POINT OF CLAY ISLAND.  IT IS ON
 HU1958'MARSH, ABOUT 1 FOOT ABOVE HIGH WATER, 50 YARDS NE OF SHORE, 60
 HU1958'YARDS E OF SHORE, AND 85 YARDS N-NE OF SHORE.  THE STATION
 HU1958'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HU1958'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HU1958'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HU1958'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HU1958'POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE,
 HU1958'BURIED WITH TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HU1958'DISTANCES AND BEARINGS TO POINTS OF REFERENCE ARE AS
 HU1958'FOLLOWS--CENTER GABLE OF HOUSE AT BISHOP HEAD, 4-1/4 MILES, S 43 DEG
 HU1958'55 MIN W.  NEAR PEAK OF HOUSE, 4-1/4 MILES, S 65 DEG 14 MIN W.
 HU1958'CHIMNEY IN MIDDLE OF HOUSE, 3-7/8 MILES, S 67 DEG 20 MIN W.
 HU1958'LEFT CHIMNEY OF HOUSE 3 MILES, N 88 DEG 13 MIN W.  NEAR PEAK
 HU1958'OF HOUSE, 3 MILES, N 78 DEG 43 MIN W.  STACK OF CANNING HOUSE ON
 HU1958'ELLIOTT ISLAND, 3-1/2 MILES, N 31 DEG 47 MIN W.
 HU1958
 HU1958                          STATION RECOVERY (1932)
 HU1958
 HU1958'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1958'AN OLD TRIPOD WAS FOUND AT THE SITE OF THE STATION, BUT NONE OF
 HU1958'THE MARKS.  BROKEN PIECES OF CONCRETE INDICATE THAT THE CENTER
 HU1958'MARK IS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3176 ***********************************************************************
 DI3176  DESIGNATION -  FISH 2
 DI3176  PID         -  DI3176
 DI3176  STATE/COUNTY-  MD/DORCHESTER
 DI3176  COUNTRY     -  US
 DI3176  USGS QUAD   -  HONGA (2016)
 DI3176
 DI3176                         *CURRENT SURVEY CONTROL
 DI3176  ______________________________________________________________________
 DI3176* NAD 83(2011) POSITION- 38 20 39.16142(N) 076 13 47.56048(W)   ADJUSTED
 DI3176* NAD 83(2011) ELLIP HT-   -34.434 (meters)        (06/27/12)   ADJUSTED
 DI3176* NAD 83(2011) EPOCH   -  2010.00
 DI3176* NAVD 88 ORTHO HEIGHT -     0.6   (meters)        2.    (feet) GPS OBS
 DI3176  ______________________________________________________________________
 DI3176  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3176  GEOID HEIGHT    -        -35.030 (meters)                     GEOID03
 DI3176  GEOID HEIGHT    -        -35.072 (meters)                     GEOID18
 DI3176  NAD 83(2011) X  -  1,192,227.116 (meters)                     COMP
 DI3176  NAD 83(2011) Y  - -4,864,829.264 (meters)                     COMP
 DI3176  NAD 83(2011) Z  -  3,935,459.598 (meters)                     COMP
 DI3176  LAPLACE CORR    -         -6.23  (seconds)                    DEFLEC18
 DI3176
 DI3176  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3176  Standards:
 DI3176         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3176            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3176  -------------------------------------------------------------------
 DI3176  NETWORK    0.89   1.20           0.41   0.30   0.61      0.12111484
 DI3176  -------------------------------------------------------------------
 DI3176  Click here for local accuracies and other accuracy information.
 DI3176
 DI3176.The horizontal coordinates were established by GPS observations
 DI3176.and adjusted by the National Geodetic Survey in June 2012.
 DI3176
 DI3176.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3176.been affixed to the stable North American tectonic plate. See 
 DI3176.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3176
 DI3176.The horizontal coordinates are valid at the epoch date displayed above
 DI3176.which is a decimal equivalence of Year/Month/Day.
 DI3176
 DI3176.The orthometric height was determined by GPS observations and a
 DI3176.high-resolution geoid model.
 DI3176
 DI3176.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3176.GEOID18 height accuracy estimate available here.
 DI3176
 DI3176.Click photographs - Photos may exist for this station.
 DI3176
 DI3176.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3176
 DI3176.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3176
 DI3176.The ellipsoidal height was determined by GPS observations
 DI3176.and is referenced to NAD 83.
 DI3176
 DI3176. The following values were computed from the NAD 83(2011) position.
 DI3176
 DI3176;                    North         East     Units Scale Factor Converg.
 DI3176;SPC MD       -    75,494.402   467,323.034   MT  0.99999260   +0 29 00.1
 DI3176;SPC MD       -   247,684.55  1,533,208.99   sFT  0.99999260   +0 29 00.1
 DI3176;UTM  18      - 4,244,722.799   392,524.747   MT  0.99974225   -0 45 47.1
 DI3176
 DI3176!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3176!SPC MD       -   1.00000540  x   0.99999260  =   0.99999800
 DI3176!UTM  18      -   1.00000540  x   0.99974225  =   0.99974765
 DI3176
 DI3176_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9252444722(NAD 83)
 DI3176
 DI3176|---------------------------------------------------------------------|
 DI3176| PID    Reference Object                     Distance      Geod. Az  |
 DI3176|                                                           dddmmss.s |
 DI3176| DI3175 FISH 1                              289.971 METERS 05032     |
 DI3176|---------------------------------------------------------------------|
 DI3176
 DI3176                          SUPERSEDED SURVEY CONTROL
 DI3176
 DI3176  NAD 83(1991)-  38 20 39.16163(N)    076 13 47.56128(W) AD(       ) 1
 DI3176  ELLIP H (01/05/07)  -34.401  (m)                       GP(       ) 4 2
 DI3176
 DI3176.Superseded values are not recommended for survey control.
 DI3176
 DI3176.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3176.See file dsdata.pdf to determine how the superseded data were derived.
 DI3176
 DI3176_MARKER: DD = SURVEY DISK
 DI3176_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3176_STAMPING: FISH 2 2006
 DI3176_MARK LOGO: MD-019
 DI3176_PROJECTION: RECESSED 10 CENTIMETERS
 DI3176_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3176_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3176+STABILITY: SURFACE MOTION
 DI3176_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3176+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2014
 DI3176
 DI3176  HISTORY     - Date     Condition        Report By
 DI3176  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3176  HISTORY     - 20090122 GOOD             USACE
 DI3176  HISTORY     - 20140320 GOOD             ARCSHE
 DI3176
 DI3176                          STATION DESCRIPTION
 DI3176
 DI3176'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3176'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR FISHING
 DI3176'CREEK, MARYLAND.   IT IS ABOUT 17.1 MI (27.5 KM) SOUTHWEST OF
 DI3176'CAMBRIDGE, MARYLAND, ABOUT 31.1 MI (50.0 KM)  SOUTHWEST OF EASTON,
 DI3176'MARYLAND AND ABOUT 34.4 MI (55.3 KM) WEST OF SALISBURY, MARYLAND.
 DI3176'
 DI3176'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3176'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHWEST ON US RTE 50 FOR 2.6 MI
 DI3176'(4.2 KM) TO INTERSECTION WITH SR  16 (CHURCH CREEK ROAD/ CAMBRIDGE
 DI3176'BYPASS).  TURN LEFT AND PROCEED 7.3 MI (11.7 KM)  SOUTHWEST TO
 DI3176'INTERSECTION WITH SR 335 (CHURCH CREEK- GOLDEN HILL ROAD).  TURN LEFT
 DI3176'AND  PROCEED SOUTHWEST 9.8 MI (15.8. KM) TO INTERSECTION WITH SR 336
 DI3176'(CRAPO ROAD).  TURN RIGHT  TO REMAIN ON SR 335 (HOOPER ISLAND ROAD)
 DI3176'AND PROCEED 6.8 MI (10.9 KM) SOUTHWEST TO THE  STATION ON THE LEFT.
 DI3176'STATION IS 4.0 FT (1.2 M) SOUTHEAST OF THE SOUTHEAST EDGE OF SR 335,
 DI3176'58.5 FT (9.0 M) SOUTHEAST  OF UTILITY POLE CP 104 AND 112.5 FT (10.7
 DI3176'M) NORTHEAST OF UTILITY POLE CP 116.  A 3 IN BRASS  DISK STAMPED FISH
 DI3176'1 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT RECESSED 0.20 FT
 DI3176'BELOW THE GROUND.
 DI3176
 DI3176                          STATION RECOVERY (2009)
 DI3176
 DI3176'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2009 (HLC)
 DI3176'RECOVERED AS DESCRIBED EXCEPT STATION IS 58.5 FEET SOUTHWEST OF CP
 DI3176'POLE NUMBER 104. AND 58.5 FEET IS 17.83METERS AND 112.5 FEET IS
 DI3176'34.29METERS
 DI3176
 DI3176                          STATION RECOVERY (2014)
 DI3176
 DI3176'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 DI3176'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1595 ***********************************************************************
 HU1595  HT_MOD      -  This is a Height Modernization Survey Station.
 HU1595  DESIGNATION -  FISHER
 HU1595  PID         -  HU1595
 HU1595  STATE/COUNTY-  MD/WORCESTER
 HU1595  COUNTRY     -  US
 HU1595  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1595
 HU1595                         *CURRENT SURVEY CONTROL
 HU1595  ______________________________________________________________________
 HU1595* NAD 83(2011) POSITION- 38 10 01.26550(N) 075 10 07.05673(W)   ADJUSTED
 HU1595* NAD 83(2011) ELLIP HT-   -33.599 (meters)        (06/05/19)   ADJUSTED
 HU1595* NAD 83(2011) EPOCH   -  2010.00
 HU1595* NAVD 88 ORTHO HEIGHT -     2.70  (meters)        8.9   (feet) GPS OBS
 HU1595  ______________________________________________________________________
 HU1595  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 HU1595  GEOID HEIGHT    -        -36.250 (meters)                     GEOID12B
 HU1595  GEOID HEIGHT    -        -36.254 (meters)                     GEOID18
 HU1595  NAD 83(2011) X  -  1,285,242.892 (meters)                     COMP
 HU1595  NAD 83(2011) Y  - -4,853,686.337 (meters)                     COMP
 HU1595  NAD 83(2011) Z  -  3,920,015.241 (meters)                     COMP
 HU1595  LAPLACE CORR    -          0.44  (seconds)                    DEFLEC18
 HU1595
 HU1595  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1595  Standards:
 HU1595         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1595            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1595  -------------------------------------------------------------------
 HU1595  NETWORK    1.01   0.84           0.49   0.28   0.43     -0.00612128
 HU1595  -------------------------------------------------------------------
 HU1595  Click here for local accuracies and other accuracy information.
 HU1595
 HU1595.The horizontal coordinates were established by GPS observations
 HU1595.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 HU1595
 HU1595.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1595.been affixed to the stable North American tectonic plate. See 
 HU1595.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1595
 HU1595.The horizontal coordinates are valid at the epoch date displayed above
 HU1595.which is a decimal equivalence of Year/Month/Day.
 HU1595
 HU1595.The orthometric height was determined by GPS observations and a
 HU1595.high-resolution geoid model using precise GPS observation and
 HU1595.processing techniques.
 HU1595
 HU1595.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1595.GEOID18 height accuracy estimate available here.
 HU1595
 HU1595.Click photographs - Photos may exist for this station.
 HU1595
 HU1595.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1595
 HU1595.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1595
 HU1595.The ellipsoidal height was determined by GPS observations
 HU1595.and is referenced to NAD 83.
 HU1595
 HU1595. The following values were computed from the NAD 83(2011) position.
 HU1595
 HU1595;                    North         East     Units Scale Factor Converg.
 HU1595;SPC MD       -    57,151.369   560,481.887   MT  1.00002580   +1 08 58.0
 HU1595;SPC MD       -   187,504.12  1,838,847.66   sFT  1.00002580   +1 08 58.0
 HU1595;UTM  18      - 4,224,359.732   485,228.647   MT  0.99960269   -0 06 15.1
 HU1595
 HU1595!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1595!SPC MD       -   1.00000527  x   1.00002580  =   1.00003107
 HU1595!UTM  18      -   1.00000527  x   0.99960269  =   0.99960796
 HU1595
 HU1595:                Primary Azimuth Mark                     Grid Az
 HU1595:SPC MD       -  FISHER AZ MK                             027 30 09.4
 HU1595:UTM  18      -  FISHER AZ MK                             028 45 22.5
 HU1595
 HU1595_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8522824359(NAD 83)
 HU1595
 HU1595|---------------------------------------------------------------------|
 HU1595| PID    Reference Object                     Distance      Geod. Az  |
 HU1595|                                                           dddmmss.s |
 HU1595| DC7301 FISHER AZ MK                                       0283907.4 |
 HU1595| DC7302 FISHER RM 1                          10.203 METERS 21812     |
 HU1595| DC7303 FISHER RM 2                           8.733 METERS 33227     |
 HU1595|---------------------------------------------------------------------|
 HU1595
 HU1595                          SUPERSEDED SURVEY CONTROL
 HU1595
 HU1595  NAD 83(1991)-  38 10 01.26498(N)    075 10 07.05702(W) AD(       ) 2
 HU1595  NAD 83(1986)-  38 10 01.25107(N)    075 10 07.09313(W) AD(       ) 2
 HU1595  NAD 27      -  38 10 00.82325(N)    075 10 08.41289(W) AD(       ) 2
 HU1595  NGVD 29 (07/19/86)    2.7    (m)            9.     (f) VERT ANG       
 HU1595
 HU1595.Superseded values are not recommended for survey control.
 HU1595
 HU1595.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1595.See file dsdata.pdf to determine how the superseded data were derived.
 HU1595
 HU1595_MARKER: DS = TRIANGULATION STATION DISK
 HU1595_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1595_STAMPING: FISHER 1962
 HU1595_MARK LOGO: CGS
 HU1595_PROJECTION: PROJECTING 30 CENTIMETERS
 HU1595_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1595+STABILITY: SURFACE MOTION
 HU1595_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1595+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 HU1595
 HU1595  HISTORY     - Date     Condition        Report By
 HU1595  HISTORY     - 1962     MONUMENTED       CGS
 HU1595  HISTORY     - 1975     GOOD             NGS
 HU1595  HISTORY     - 20130227 GOOD             ARCSHE
 HU1595  HISTORY     - 20150316 GOOD             NPS
 HU1595
 HU1595                          STATION DESCRIPTION
 HU1595
 HU1595'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1595'STATION IS LOCATED ABOUT 12.0 MILES EAST-NORTHEAST OF SNOW HILL,
 HU1595'MARYLAND, 11-1/2 MILES WEST-SOUTHWEST OF OCEAN CITY, MARYLAND AND
 HU1595'2.0 MILES SOUTH OF THE FERRY LANDING AND ON ASSATEAGUE ISLAND.
 HU1595'
 HU1595'STATION IS A STANDARD DISK SET IN THE TOP OF A 10 X 12 INCH
 HU1595'CONCRETE MONUMENT WHICH PROJECTS ABOUT 6 INCHES ABOVE THE SURFACE
 HU1595'OF THE GROUND, STAMPED FISHER 1962.  IT IS 235.0 FEET
 HU1595'WEST-NORTHWEST OF POWERLINE POLE Q 230 AND 190.0 FEET
 HU1595'WEST-NORTHWEST OF THE APPROXIMATE CENTER OF BALTIMORE BLVD.
 HU1595'
 HU1595'REFERENCE MARK 1 IS A STANDARD DISK SET IN THE TOP OF A 10 X 12
 HU1595'INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 7 INCHES ABOVE THE
 HU1595'SURFACE OF THE GROUND, STAMPED FISHER NO 1 1962.
 HU1595'
 HU1595'REFERENCE MARK 2 IS A STANDARD DISK SET IN THE TOP OF A CONCRETE
 HU1595'MONUMENT WHICH PROJECTS ABOUT 7 INCHES ABOVE THE SURFACE OF THE
 HU1595'GROUND AND IS SET IN THE TOP OF A 10 X 12 INCH MONUMENT, STAMPED
 HU1595'FISHER NO 2 1962.
 HU1595'
 HU1595'AZIMUTH MARK IS A STANDARD DISK STAMPED FISHER 1962, SET IN THE
 HU1595'TOP OF A 12X12-INCH CONCRETE MONUMENT WHICH IS SET ABOUT 2 INCHES
 HU1595'BELOW THE SURFACE OF THE GROUND.  IT IS 2 FEET NNW OF POWERLINE
 HU1595'POLE Q 226.
 HU1595'
 HU1595'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 HU1595
 HU1595                          STATION RECOVERY (1975)
 HU1595
 HU1595'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (EAB)
 HU1595'STATION MARK WAS RECOVERED AND IT WAS FOUND TO BE IN GOOD
 HU1595'CONDITION.  IT WAS FOUND TO BE 167 PACES WEST OF THE CENTER OF A
 HU1595'CLAY AND SAND ROAD, 1 FOOT EAST OF A WITNESS POST THAT WAS SET
 HU1595'AT THIS TIME AND ABOUT 3 INCHES BELOW THE SAND SURFACE.
 HU1595'
 HU1595'REFERENCE MARK NO 1 WAS RECOVERED AND IT WAS FOUND TO BE
 HU1595'PROJECTING 2.5 FEET AND IT WAS STILL SOLID IN THE GROUND.  AT THIS
 HU1595'TIME SAND WAS SHOVELED AROUND THIS MARK.
 HU1595'
 HU1595'REFERENCE MARK NO 2 WAS RECOVERED AND IT WAS FOUND TO BE IN
 HU1595'GOOD CONDITION.  IT IS ABOUT 6 INCHES BELOW THE SAND SURFACE.
 HU1595'
 HU1595'AZIMUTH MARK WAS NOT FOUND, ALTHO THE POWER POLE MENTIONED IN
 HU1595'THE 1962 DESCRIPTION WAS RECOVERED.
 HU1595'
 HU1595'THIS STATION SITE IS ON PROPERTY OWNED BY THE U.S. GOVERNMENT AND
 HU1595'IT IS MANAGED BY THE ASSATEAGUE ISLAND NATIONAL SEASHORE AND
 HU1595'PARK SERVICE.  THIS OFFICE IS LOCATED ABOUT 5.8 MILES NORTH
 HU1595'OF THIS STATION SITE.  PERMISSION IS REQUIRED TO GET TO THIS
 HU1595'STATION AND IT CAN BE OBTAINED FROM THAT OFFICE.
 HU1595'
 HU1595'TO REACH THIS STATION FROM ABOUT 6 MILES SOUTHEAST OF THE TOWN
 HU1595'OF BERLIN, AT THE ASSATEAGUE ISLAND NATIONAL SEASHORE AND PARK
 HU1595'SERVICE OFFICE, GO SOUTHEAST FOLLOWING STATE ROAD 611 AND ON A
 HU1595'CONCRETE BRIDGE OVER THE SINEPUXENT BAY INLET FOR 1.2 MILES TO
 HU1595'A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTH-SOUTHWESTERLY
 HU1595'FOR 2.6 MILES TO A RANGER GUARD SHELTER IN THE CENTER OF THE
 HU1595'ROAD, CONTINUE ON SOUTHERLY FOR 3.1 MILES TO THE STATION SITE
 HU1595'ON THE RIGHT, ABOUT 167 PACES WESTERLY OF THE CENTER OF THIS
 HU1595'ROAD, AS DESCRIBED IN THE 1962 DESCRIPTION.
 HU1595
 HU1595                          STATION RECOVERY (2013)
 HU1595
 HU1595'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU1595'THE ROAD HAS BEEN OBLITERATED BY BEACH EROSION.  THE POWER LINE AND
 HU1595'POLES HAVE BEEN REMOVED.
 HU1595'
 HU1595'THE MARK IS LOCATED ABOUT 11.1 MI (17.9 KM) SOUTH-SOUTHEAST OF BERLIN,
 HU1595'10.5 MI (16.9 KM) EAST-NORTHEAST OF BOXIRON AND 8.8 MI (14.2 KM)
 HU1595'SOUTHEAST OF NEWARK ON ASSATEAGUE ISLAND.  OWNERSHIP--U.S. GOVERNMENT.
 HU1595'TO REACH FROM THE SOUTHEAST END OF THE VERRAZANO BRIDGE OVER
 HU1595'SINEPUXENT BAY, GO SOUTHEAST ON MD 611 FOR 0.6 MI (1.0 KM) TO A SIDE
 HU1595'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ON STEPHEN DECATUR
 HU1595'MEMORIAL ROAD/BAYBERRY DRIVE FOR 3.5 MI (5.6 KM) TO A TRAFFIC CIRCLE.
 HU1595'TAKE THE SECOND EXIT SOUTH TOWARD THE NATIONAL SEASHORE AND CONTINUE
 HU1595'SOUTH-SOUTHWEST ON A PAVED ROAD TO THE END.  ACTIVATE FOUR-WHEEL DRIVE
 HU1595'AND CONTINUE SOUTH-SOUTHWEST ON THE SAND ROAD/BEACH FOR 1.62 MI (2.6
 HU1595'KM) AND PARK THE VEHICLE.  PACK WEST-NORTHWEST FOR 860 FT (262.1 M) TO
 HU1595'THE MARK ON THE EAST SIDE OF A SMALL SAND DUNE.
 HU1595
 HU1595                          STATION RECOVERY (2015)
 HU1595
 HU1595'RECOVERY NOTE BY NATIONAL PARK SERVICE 2015 (NTW)
 HU1595'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5582 ***********************************************************************
 JV5582  DESIGNATION -  FISHER USE 1954
 JV5582  PID         -  JV5582
 JV5582  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5582  COUNTRY     -  US
 JV5582  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5582
 JV5582                         *CURRENT SURVEY CONTROL
 JV5582  ______________________________________________________________________
 JV5582* NAD 83(1991) POSITION- 39 15 54.19783(N) 076 37 13.84625(W)   ADJUSTED
 JV5582* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5582  ______________________________________________________________________
 JV5582  GEOID HEIGHT    -        -32.746 (meters)                     GEOID18
 JV5582  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 JV5582  HORZ ORDER      -  THIRD
 JV5582
 JV5582.The horizontal coordinates were established by classical geodetic methods
 JV5582.and adjusted by the National Geodetic Survey in January 1992.
 JV5582
 JV5582.The orthometric height was scaled from a topographic map.
 JV5582
 JV5582.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5582.GEOID18 height accuracy estimate available here.
 JV5582
 JV5582.Click photographs - Photos may exist for this station.
 JV5582
 JV5582.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5582
 JV5582. The following values were computed from the NAD 83(1991) position.
 JV5582
 JV5582;                    North         East     Units Scale Factor Converg.
 JV5582;SPC MD       -   177,498.997   432,749.623   MT  0.99997288   +0 14 17.4
 JV5582;SPC MD       -   582,344.63  1,419,779.39   sFT  0.99997288   +0 14 17.4
 JV5582;UTM  18      - 4,347,442.149   360,198.244   MT  0.99984065   -1 01 32.9
 JV5582
 JV5582!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5582!SPC MD       -   1.00000470  x   0.99997288  =   0.99997758
 JV5582!UTM  18      -   1.00000470  x   0.99984065  =   0.99984535
 JV5582
 JV5582:                Primary Azimuth Mark                     Grid Az
 JV5582:SPC MD       -  BALTIMORE GAS ELEC GAS HOLDER            002 40 10.2
 JV5582:UTM  18      -  BALTIMORE GAS ELEC GAS HOLDER            003 56 00.5
 JV5582
 JV5582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6019847442(NAD 83)
 JV5582
 JV5582|---------------------------------------------------------------------|
 JV5582| PID    Reference Object                     Distance      Geod. Az  |
 JV5582|                                                           dddmmss.s |
 JV5582| JV5505 BALTIMORE GAS ELEC GAS HOLDER       APPROX. 0.8 KM 0025427.6 |
 JV5582| JV5577 NIRA                                APPROX. 0.6 KM 3485216.3 |
 JV5582|---------------------------------------------------------------------|
 JV5582
 JV5582                          SUPERSEDED SURVEY CONTROL
 JV5582
 JV5582  NAD 83(1986)-  39 15 54.19432(N)    076 37 13.85516(W) AD(       ) 3
 JV5582  NAD 27      -  39 15 53.81100(N)    076 37 14.96800(W) AD(       ) 3
 JV5582
 JV5582.Superseded values are not recommended for survey control.
 JV5582
 JV5582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5582.See file dsdata.pdf to determine how the superseded data were derived.
 JV5582
 JV5582_MARKER: DD = SURVEY DISK
 JV5582_SETTING: 0 = UNSPECIFIED SETTING
 JV5582_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5582
 JV5582  HISTORY     - Date     Condition        Report By
 JV5582  HISTORY     - 1954     MONUMENTED       USACE
 JV5582
 JV5582                          STATION DESCRIPTION
 JV5582
 JV5582'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1954 (EHK)
 JV5582'THE STATION IS LOCATED ON THE E SHORE OF MIDDLE BRANCH PATAPSCO
 JV5582'RIVER, AT THE E END OF THE WESTERN MARYLAND RAILROAD BRIDGE.
 JV5582'
 JV5582'TO REACH THE STATION FROM BALTIMORE, GO S ON HANOVER STREET
 JV5582'(U.S. ROUTE 301) TO MAC COMAS STREET WHICH IS BETWEEN TWO RAILROAD
 JV5582'OVERPASSES.  TURN W ON MAC COMAS STREET TO THE END.  FOLLOW THE
 JV5582'EDGE OF THE RAILROAD EMBANKMENT TO THE SHORELINE AND THE VICINITY
 JV5582'OF THE STATION.
 JV5582'
 JV5582'STATION IS LOCATED ON TOP OF THE EMBANKMENT, IN THE RAILROAD
 JV5582'RIGHT-OF-WAY, 15.9 FT. SE OF A TIMBER BULKHEAD, 22.6 FT. FROM A
 JV5582'CHISELED CROSS ON THE CONCRETE BASE OF A DISMANTLED RAILROAD
 JV5582'SEMAPHORE, 7.8 FT. N OF THE N EDGE OF THE RAILROAD TRACK, AND
 JV5582'8.5 FT. W OF A NAIL AT THE SW END OF A WOODEN BULKHEAD.
 JV5582'
 JV5582'STATION IS A U.S.E. BRONZE DISK, STAMPED FISHER 1948 AND SET IN
 JV5582'A CONCRETE MONUMENT WHICH PROJECTS 6 IN. ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5729 ***********************************************************************
 JV5729  DESIGNATION -  FISHING
 JV5729  PID         -  JV5729
 JV5729  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5729  COUNTRY     -  US
 JV5729  USGS QUAD   -  CURTIS BAY (2016)
 JV5729
 JV5729                         *CURRENT SURVEY CONTROL
 JV5729  ______________________________________________________________________
 JV5729* NAD 83(1991) POSITION- 39 13 34.49828(N) 076 33 55.75844(W)   ADJUSTED
 JV5729* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV5729  ______________________________________________________________________
 JV5729  GEOID HEIGHT    -        -32.923 (meters)                     GEOID18
 JV5729  LAPLACE CORR    -         -3.85  (seconds)                    DEFLEC18
 JV5729  HORZ ORDER      -  THIRD
 JV5729
 JV5729.The horizontal coordinates were established by classical geodetic methods
 JV5729.and adjusted by the National Geodetic Survey in January 1992.
 JV5729
 JV5729.The orthometric height was scaled from a topographic map.
 JV5729
 JV5729.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5729.GEOID18 height accuracy estimate available here.
 JV5729
 JV5729.Click photographs - Photos may exist for this station.
 JV5729
 JV5729.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5729
 JV5729. The following values were computed from the NAD 83(1991) position.
 JV5729
 JV5729;                    North         East     Units Scale Factor Converg.
 JV5729;SPC MD       -   173,212.158   437,518.682   MT  0.99996851   +0 16 21.8
 JV5729;SPC MD       -   568,280.22  1,435,425.88   sFT  0.99996851   +0 16 21.8
 JV5729;UTM  18      - 4,343,051.805   364,870.979   MT  0.99982483   -0 59 24.5
 JV5729
 JV5729!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5729!SPC MD       -   1.00000489  x   0.99996851  =   0.99997340
 JV5729!UTM  18      -   1.00000489  x   0.99982483  =   0.99982972
 JV5729
 JV5729:                Primary Azimuth Mark                     Grid Az
 JV5729:SPC MD       -  QUARANTINE                               127 48 01.8
 JV5729:UTM  18      -  QUARANTINE                               129 03 48.1
 JV5729
 JV5729_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6487043051(NAD 83)
 JV5729
 JV5729|---------------------------------------------------------------------|
 JV5729| PID    Reference Object                     Distance      Geod. Az  |
 JV5729|                                                           dddmmss.s |
 JV5729| JV5736 QUARANTINE                          APPROX. 1.6 KM 1280423.6 |
 JV5729| JV5712 LIVINGSTON STACK                    APPROX. 1.1 KM 2813744.7 |
 JV5729| CA9429 FISHING RM                           18.830 METERS 29939     |
 JV5729| JV5721 PRUDENTIAL OIL COMPANY STACK        APPROX. 1.3 KM 3300506.3 |
 JV5729|---------------------------------------------------------------------|
 JV5729
 JV5729                          SUPERSEDED SURVEY CONTROL
 JV5729
 JV5729  NAD 83(1986)-  39 13 34.49449(N)    076 33 55.76775(W) AD(       ) 3
 JV5729  NAD 27      -  39 13 34.10600(N)    076 33 56.89500(W) AD(       ) 3
 JV5729  USSD        -  39 13 34.47000(N)    076 33 56.73300(W) AD(       ) 3
 JV5729
 JV5729.Superseded values are not recommended for survey control.
 JV5729
 JV5729.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5729.See file dsdata.pdf to determine how the superseded data were derived.
 JV5729
 JV5729
 JV5729  HISTORY     - Date     Condition        Report By
 JV5729  HISTORY     - 1915     MONUMENTED       CGS
 JV5729  HISTORY     - 1924     GOOD             CGS
 JV5729  HISTORY     - 1934     MARK NOT FOUND   CGS
 JV5729
 JV5729                          STATION DESCRIPTION
 JV5729
 JV5729'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5729'ON FISHING POINT, AT THE NORTHERN SIDE OF ENTRANCE TO CURTIS
 JV5729'BAY.  STATION MARKED BY STANDARD BRONZE DISK STATION MARK SET
 JV5729'IN CONCRETE MONUMENT WITH TOP FLUSH WITH GROUND.
 JV5729'A PIECE OF 2- BY 2-INCH TIMBER WAS DRIVEN INTO THE
 JV5729'MARSHY GROUND AND EXTENDS UP INTO THE CONCRETE MONUMENT.  A
 JV5729'STANDARD BRONZE DISK REFERENCE MARK WAS SET AT THE INTERSECTION
 JV5729'OF THE TWO RANGES.  PRUDENTIAL OIL COMPANYS STACK WITH WAGNERS
 JV5729'CHURCH SPIRE, AND LIVINGSTONS SMOKESTACK (IN STONE HOUSE
 JV5729'COVE), WITH AN ELECTRIC LIGHT POLE ABOUT 30 FEET BACK FROM
 JV5729'BULKHEAD OF THE OIL DOCK.  THE REFERENCE MARK IS 18.830 METERS
 JV5729'(61.78 FEET) FROM THE STATION N 60 DEG 21 MIN W.
 JV5729'RECOVERY OF 1924 GIVES ADDITIONAL INFORMATION AS
 JV5729'FOLLOWS--THE STATION IS ON PROPERTY OF THE MEXICAN
 JV5729'PETROLEUM CORPORATION AND IS NOW LOCATED NEAR THE MOST
 JV5729'SOUTHEASTERLY OF A BATTERY OF SIX TANKS LYING OVER TOWARD THE
 JV5729'TEXAS COMPANYS PLANT AND ABOUT 15 FEET FROM THE TANK WITHIN
 JV5729'THE FIREWALL SURROUNDING IT.  IT IS COVERED BY ABOUT 4 FEET OF
 JV5729'FILL BUT IS POSSIBLE OF RECOVERY BY MEANS OF A BARREL PLACED
 JV5729'AROUND THE MARK WHEN THE FILLING WAS IN PROGRESS.  THE REFERENCE
 JV5729'MARK IS LOST.
 JV5729
 JV5729                          STATION RECOVERY (1934)
 JV5729
 JV5729'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5729'UNABLE TO RECOVER.  LAND ON WHICH STATION IS LOCATED IS COVERED
 JV5729'BY 6-FOOT FILL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4864 ***********************************************************************
 JV4864  DESIGNATION -  FISHING BATTERY LIGHTHOUSE
 JV4864  PID         -  JV4864
 JV4864  STATE/COUNTY-  MD/HARFORD
 JV4864  COUNTRY     -  US
 JV4864  USGS QUAD   -  SPESUTIE (2016)
 JV4864
 JV4864                         *CURRENT SURVEY CONTROL
 JV4864  ______________________________________________________________________
 JV4864* NAD 83(1991) POSITION- 39 29 40.55698(N) 076 05 00.21306(W)   ADJUSTED
 JV4864  ______________________________________________________________________
 JV4864  GEOID HEIGHT    -        -33.258 (meters)                     GEOID18
 JV4864  LAPLACE CORR    -         -1.96  (seconds)                    DEFLEC18
 JV4864  HORZ ORDER      -  THIRD
 JV4864
 JV4864.The horizontal coordinates were established by classical geodetic methods
 JV4864.and adjusted by the National Geodetic Survey in January 1992.
 JV4864
 JV4864.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4864.GEOID18 height accuracy estimate available here.
 JV4864
 JV4864.Click photographs - Photos may exist for this station.
 JV4864
 JV4864.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4864
 JV4864. The following values were computed from the NAD 83(1991) position.
 JV4864
 JV4864;                    North         East     Units Scale Factor Converg.
 JV4864;SPC MD       -   203,311.118   478,845.959   MT  1.00000811   +0 34 31.1
 JV4864;SPC MD       -   667,029.89  1,571,013.78   sFT  1.00000811   +0 34 31.1
 JV4864;UTM  18      - 4,372,225.315   406,842.698   MT  0.99970685   -0 41 20.7
 JV4864
 JV4864_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0684272225(NAD 83)
 JV4864
 JV4864                          SUPERSEDED SURVEY CONTROL
 JV4864
 JV4864  NAD 83(1986)-  39 29 40.54979(N)    076 05 00.21873(W) AD(       ) 3
 JV4864  NAD 27      -  39 29 40.15600(N)    076 05 01.40800(W) AD(       ) 3
 JV4864  USSD        -  39 29 40.60700(N)    076 05 00.97000(W) AD(       ) 3
 JV4864
 JV4864.Superseded values are not recommended for survey control.
 JV4864
 JV4864.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4864.See file dsdata.pdf to determine how the superseded data were derived.
 JV4864
 JV4864_MARKER: 13 = LIGHTHOUSE
 JV4864
 JV4864  HISTORY     - Date     Condition        Report By
 JV4864  HISTORY     - 1933     FIRST OBSERVED   CGS
 JV4864  HISTORY     - 1974     GOOD             NGS
 JV4864  HISTORY     - 19901015 GOOD             USPSQD
 JV4864
 JV4864                          STATION DESCRIPTION
 JV4864
 JV4864'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (RDB)
 JV4864'STATION IS LOCATED ON THE SOUTHERNMOST OF THREE SMALL ISLANDS
 JV4864'NORTH OF SPESUTIE ISLAND.  THE LIGHTHOUSE IS THE DARK SKELTON
 JV4864'STEEL TOWER NORTH OF THE LARGE WHITE BUILDING AND TOWER WITH
 JV4864'THE GREEN ROOF.
 JV4864'
 JV4864'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4864'3.2 MILES SSE OF HAVRE DE GRACE.
 JV4864
 JV4864                          STATION RECOVERY (1990)
 JV4864
 JV4864'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV4864'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8213 ***********************************************************************
 DH8213  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8213  DESIGNATION -  FISHING BAY BURN SET 8A1
 DH8213  PID         -  DH8213
 DH8213  STATE/COUNTY-  MD/DORCHESTER
 DH8213  COUNTRY     -  US
 DH8213  USGS QUAD   -  NANTICOKE (2016)
 DH8213
 DH8213                         *CURRENT SURVEY CONTROL
 DH8213  ______________________________________________________________________
 DH8213* NAD 83(2011) POSITION- 38 22 15.76554(N) 075 58 14.38086(W)   ADJUSTED
 DH8213* NAD 83(2011) ELLIP HT-   -34.904 (meters)        (06/27/12)   ADJUSTED
 DH8213* NAD 83(2011) EPOCH   -  2010.00
 DH8213* NAVD 88 ORTHO HEIGHT -     0.55  (meters)        1.8   (feet) GPS OBS
 DH8213  ______________________________________________________________________
 DH8213  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8213  GEOID HEIGHT    -        -35.422 (meters)                     GEOID03
 DH8213  GEOID HEIGHT    -        -35.452 (meters)                     GEOID18
 DH8213  NAD 83(2011) X  -  1,213,776.019 (meters)                     COMP
 DH8213  NAD 83(2011) Y  - -4,857,591.937 (meters)                     COMP
 DH8213  NAD 83(2011) Z  -  3,937,795.060 (meters)                     COMP
 DH8213  LAPLACE CORR    -         -2.59  (seconds)                    DEFLEC18
 DH8213
 DH8213  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8213  Standards:
 DH8213         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8213            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8213  -------------------------------------------------------------------
 DH8213  NETWORK    0.91   1.98           0.40   0.34   1.01     -0.00159098
 DH8213  -------------------------------------------------------------------
 DH8213  Click here for local accuracies and other accuracy information.
 DH8213
 DH8213.The horizontal coordinates were established by GPS observations
 DH8213.and adjusted by the National Geodetic Survey in June 2012.
 DH8213
 DH8213.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8213.been affixed to the stable North American tectonic plate. See 
 DH8213.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8213
 DH8213.The horizontal coordinates are valid at the epoch date displayed above
 DH8213.which is a decimal equivalence of Year/Month/Day.
 DH8213
 DH8213.The orthometric height was determined by GPS observations and a
 DH8213.high-resolution geoid model using precise GPS observation and
 DH8213.processing techniques.
 DH8213
 DH8213.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8213.GEOID18 height accuracy estimate available here.
 DH8213
 DH8213.Click photographs - Photos may exist for this station.
 DH8213
 DH8213.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8213
 DH8213.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8213
 DH8213.The ellipsoidal height was determined by GPS observations
 DH8213.and is referenced to NAD 83.
 DH8213
 DH8213. The following values were computed from the NAD 83(2011) position.
 DH8213
 DH8213;                    North         East     Units Scale Factor Converg.
 DH8213;SPC MD       -    78,696.236   489,948.971   MT  0.99998840   +0 38 45.8
 DH8213;SPC MD       -   258,189.23  1,607,440.92   sFT  0.99998840   +0 38 45.8
 DH8213;UTM  18      - 4,247,430.515   415,208.765   MT  0.99968854   -0 36 09.3
 DH8213
 DH8213!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8213!SPC MD       -   1.00000548  x   0.99998840  =   0.99999388
 DH8213!UTM  18      -   1.00000548  x   0.99968854  =   0.99969402
 DH8213
 DH8213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1520847430(NAD 83)
 DH8213
 DH8213                          SUPERSEDED SURVEY CONTROL
 DH8213
 DH8213  NAD 83(2007)-  38 22 15.76575(N)    075 58 14.38173(W) AD(2002.00) B
 DH8213  ELLIP H (02/12/09)  -34.878  (m)                       GP(2002.00) 5 1
 DH8213  NAD 83(1991)-  38 22 15.76590(N)    075 58 14.38128(W) AD(       ) B
 DH8213  ELLIP H (02/28/06)  -34.872  (m)                       GP(       ) 5 1
 DH8213
 DH8213.Superseded values are not recommended for survey control.
 DH8213
 DH8213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8213.See file dsdata.pdf to determine how the superseded data were derived.
 DH8213
 DH8213_MARKER: Z = SEE DESCRIPTION
 DH8213_SETTING: 0 = UNSPECIFIED SETTING
 DH8213_SP_SET: USGS MEASURING DEVICE
 DH8213_MARK LOGO: NONE
 DH8213_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH8213_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8213+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2005
 DH8213
 DH8213  HISTORY     - Date     Condition        Report By
 DH8213  HISTORY     - 20050920 MONUMENTED       USGS
 DH8213
 DH8213                          STATION DESCRIPTION
 DH8213
 DH8213'DESCRIBED BY US GEOLOGICAL SURVEY 2005 (GS)
 DH8213'NO DESCRIPTION PUBLISHED AS MARK IS UNAVAILABLE EXCEPT TO OFFICIAL
 DH8213'RESEARCH PERSONNEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8214 ***********************************************************************
 DH8214  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8214  DESIGNATION -  FISHING BAY NO BURN SET 8D1
 DH8214  PID         -  DH8214
 DH8214  STATE/COUNTY-  MD/DORCHESTER
 DH8214  COUNTRY     -  US
 DH8214  USGS QUAD   -  BLACKWATER RIVER (2016)
 DH8214
 DH8214                         *CURRENT SURVEY CONTROL
 DH8214  ______________________________________________________________________
 DH8214* NAD 83(2011) POSITION- 38 22 40.88309(N) 076 00 30.91349(W)   ADJUSTED
 DH8214* NAD 83(2011) ELLIP HT-   -34.769 (meters)        (06/27/12)   ADJUSTED
 DH8214* NAD 83(2011) EPOCH   -  2010.00
 DH8214* NAVD 88 ORTHO HEIGHT -     0.63  (meters)        2.1   (feet) GPS OBS
 DH8214  ______________________________________________________________________
 DH8214  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8214  GEOID HEIGHT    -        -35.368 (meters)                     GEOID03
 DH8214  GEOID HEIGHT    -        -35.395 (meters)                     GEOID18
 DH8214  NAD 83(2011) X  -  1,210,444.153 (meters)                     COMP
 DH8214  NAD 83(2011) Y  - -4,857,927.877 (meters)                     COMP
 DH8214  NAD 83(2011) Z  -  3,938,402.311 (meters)                     COMP
 DH8214  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 DH8214
 DH8214  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8214  Standards:
 DH8214         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8214            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8214  -------------------------------------------------------------------
 DH8214  NETWORK    0.90   1.96           0.39   0.34   1.00     -0.00051006
 DH8214  -------------------------------------------------------------------
 DH8214  Click here for local accuracies and other accuracy information.
 DH8214
 DH8214.The horizontal coordinates were established by GPS observations
 DH8214.and adjusted by the National Geodetic Survey in June 2012.
 DH8214
 DH8214.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8214.been affixed to the stable North American tectonic plate. See 
 DH8214.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8214
 DH8214.The horizontal coordinates are valid at the epoch date displayed above
 DH8214.which is a decimal equivalence of Year/Month/Day.
 DH8214
 DH8214.The orthometric height was determined by GPS observations and a
 DH8214.high-resolution geoid model using precise GPS observation and
 DH8214.processing techniques.
 DH8214
 DH8214.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8214.GEOID18 height accuracy estimate available here.
 DH8214
 DH8214.Click photographs - Photos may exist for this station.
 DH8214
 DH8214.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8214
 DH8214.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8214
 DH8214.The ellipsoidal height was determined by GPS observations
 DH8214.and is referenced to NAD 83.
 DH8214
 DH8214. The following values were computed from the NAD 83(2011) position.
 DH8214
 DH8214;                    North         East     Units Scale Factor Converg.
 DH8214;SPC MD       -    79,433.983   486,626.545   MT  0.99998734   +0 37 20.1
 DH8214;SPC MD       -   260,609.66  1,596,540.59   sFT  0.99998734   +0 37 20.1
 DH8214;UTM  18      - 4,248,240.241   411,904.181   MT  0.99969558   -0 37 34.4
 DH8214
 DH8214!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8214!SPC MD       -   1.00000546  x   0.99998734  =   0.99999280
 DH8214!UTM  18      -   1.00000546  x   0.99969558  =   0.99970103
 DH8214
 DH8214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1190448240(NAD 83)
 DH8214
 DH8214                          SUPERSEDED SURVEY CONTROL
 DH8214
 DH8214  NAD 83(2007)-  38 22 40.88330(N)    076 00 30.91435(W) AD(2002.00) B
 DH8214  ELLIP H (02/12/09)  -34.743  (m)                       GP(2002.00) 5 1
 DH8214  NAD 83(1991)-  38 22 40.88345(N)    076 00 30.91391(W) AD(       ) B
 DH8214  ELLIP H (02/28/06)  -34.738  (m)                       GP(       ) 5 1
 DH8214
 DH8214.Superseded values are not recommended for survey control.
 DH8214
 DH8214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8214.See file dsdata.pdf to determine how the superseded data were derived.
 DH8214
 DH8214_MARKER: Z = SEE DESCRIPTION
 DH8214_SETTING: 0 = UNSPECIFIED SETTING
 DH8214_SP_SET: USGS MEASURING DEVICE
 DH8214_MARK LOGO: NONE
 DH8214_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DH8214_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8214+SATELLITE: SATELLITE OBSERVATIONS - September 20, 2005
 DH8214
 DH8214  HISTORY     - Date     Condition        Report By
 DH8214  HISTORY     - 20050920 MONUMENTED       USGS
 DH8214
 DH8214                          STATION DESCRIPTION
 DH8214
 DH8214'DESCRIBED BY US GEOLOGICAL SURVEY 2005 (GS)
 DH8214'NO DESCRIPTION PUBLISHED AS MARK IS UNAVAILABLE EXCEPT TO OFFICIAL
 DH8214'RESEARCH PERSONNEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1152 ***********************************************************************
 JV1152  DESIGNATION -  FITCH
 JV1152  PID         -  JV1152
 JV1152  STATE/COUNTY-  MD/BALTIMORE
 JV1152  COUNTRY     -  US
 JV1152  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1152
 JV1152                         *CURRENT SURVEY CONTROL
 JV1152  ______________________________________________________________________
 JV1152* NAD 83(1991) POSITION- 39 22 06.80150(N) 076 30 51.16932(W)   ADJUSTED
 JV1152* NAVD 88 ORTHO HEIGHT -    65.751 (meters)      215.72  (feet) ADJUSTED
 JV1152  ______________________________________________________________________
 JV1152  GEOID HEIGHT    -        -32.825 (meters)                     GEOID18
 JV1152  LAPLACE CORR    -         -3.97  (seconds)                    DEFLEC18
 JV1152  DYNAMIC HEIGHT  -         65.716 (meters)      215.60  (feet) COMP
 JV1152  MODELED GRAVITY -    980,096.5   (mgal)                       NAVD 88
 JV1152
 JV1152  HORZ ORDER      -  THIRD
 JV1152  VERT ORDER      -  SECOND    CLASS 0
 JV1152
 JV1152.The horizontal coordinates were established by classical geodetic methods
 JV1152.and adjusted by the National Geodetic Survey in January 1992.
 JV1152
 JV1152.The orthometric height was determined by differential leveling and
 JV1152.adjusted by the NATIONAL GEODETIC SURVEY
 JV1152.in June 1991.
 JV1152
 JV1152.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1152.GEOID18 height accuracy estimate available here.
 JV1152
 JV1152.Click photographs - Photos may exist for this station.
 JV1152
 JV1152.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1152
 JV1152.The dynamic height is computed by dividing the NAVD 88
 JV1152.geopotential number by the normal gravity value computed on the
 JV1152.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1152.degrees latitude (g = 980.6199 gals.).
 JV1152
 JV1152.The modeled gravity was interpolated from observed gravity values.
 JV1152
 JV1152. The following values were computed from the NAD 83(1991) position.
 JV1152
 JV1152;                    North         East     Units Scale Factor Converg.
 JV1152;SPC MD       -   189,032.917   441,861.982   MT  0.99998677   +0 18 17.6
 JV1152;SPC MD       -   620,185.50  1,449,675.52   sFT  0.99998677   +0 18 17.6
 JV1152;UTM  18      - 4,358,770.373   369,561.519   MT  0.99980949   -0 57 38.2
 JV1152
 JV1152!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1152!SPC MD       -   0.99999483  x   0.99998677  =   0.99998160
 JV1152!UTM  18      -   0.99999483  x   0.99980949  =   0.99980433
 JV1152
 JV1152:                Primary Azimuth Mark                     Grid Az
 JV1152:SPC MD       -  FITCH AZ MK RESET                        356 04 13.4
 JV1152:UTM  18      -  FITCH AZ MK RESET                        357 20 09.2
 JV1152
 JV1152_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6956158770(NAD 83)
 JV1152
 JV1152|---------------------------------------------------------------------|
 JV1152| PID    Reference Object                     Distance      Geod. Az  |
 JV1152|                                                           dddmmss.s |
 JV1152| CA9430 FITCH AZ MK                                        0321355.8 |
 JV1152| JV1153 FITCH RM 2                           16.295 METERS 20311     |
 JV1152| JV1151 FITCH RM 1                           14.720 METERS 34253     |
 JV1152| JV5432 CARNEY MICROWAVE RELAY TOWER        APPROX. 2.6 KM 3501855.3 |
 JV1152| CA9431 FITCH AZ MK RESET                                  3562231.0 |
 JV1152|---------------------------------------------------------------------|
 JV1152
 JV1152                          SUPERSEDED SURVEY CONTROL
 JV1152
 JV1152  NAD 83(1986)-  39 22 06.79719(N)    076 30 51.17763(W) AD(       ) 3
 JV1152  NAD 27      -  39 22 06.40970(N)    076 30 52.30830(W) AD(       ) 3
 JV1152  NGVD 29              66.00   (m)          216.5    (f) LEVELING    3  
 JV1152  NGVD 29 (11/26/84)   65.990  (m)          216.50   (f) ADJUSTED    2 0
 JV1152
 JV1152.Superseded values are not recommended for survey control.
 JV1152
 JV1152.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1152.See file dsdata.pdf to determine how the superseded data were derived.
 JV1152
 JV1152_MARKER: DS = TRIANGULATION STATION DISK
 JV1152_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1152_STAMPING: FITCH 1958
 JV1152_MARK LOGO: CGS
 JV1152_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1152+STABILITY: SURFACE MOTION
 JV1152
 JV1152  HISTORY     - Date     Condition        Report By
 JV1152  HISTORY     - 1958     MONUMENTED       CGS
 JV1152  HISTORY     - 1959     GOOD             CGS
 JV1152  HISTORY     - 1960     GOOD             MDSRC
 JV1152  HISTORY     - 19950810 MARK NOT FOUND   USPSQD
 JV1152  HISTORY     - 19950821 MARK NOT FOUND   USPSQD
 JV1152
 JV1152                          STATION DESCRIPTION
 JV1152
 JV1152'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV1152'THE STATION IS ABOUT 7 MILES NORTHEAST OF THE CENTER OF BALTIMORE,
 JV1152'0.05 MILE EAST OF U.S. HIGHWAY 1 AND ABOUT HALF WAY BETWEEN THE
 JV1152'VILLAGES OF OVERLEA AND FULLERTON.  IT 109 FEET SOUTHWEST OF THE
 JV1152'SOUTHWEST CORNER OF BRICK HOUSE, 68 FEET SOUTH-SOUTHEAST OF THE
 JV1152'CENTER OF GRAVEL ROAD, 53 FEET WEST OF A LARGE APPLE TREE AND
 JV1152'2-1/2 FEET NORTH OF WITNESS POST.  THE MARK IS A STANDARD
 JV1152'TRIANGULATION STATION DISK SET IN CONCRETE AND THE DISK IS
 JV1152'STAMPED FITCH 1958.
 JV1152'
 JV1152'REFERENCE MARK NO. 1 IS 2 0 FEET SOUTH-SOUTHEAST OF CENTER OF
 JV1152'GRAVEL ROAD.  THE DISK IS A STANDARD REFERENCE MARK DISK WHICH
 JV1152'PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED FITCH NO 1 1958.
 JV1152'
 JV1152'REFERENCE MARK NO. 2 IS 18 FEET NORTHWEST OF LARGE TREE.  THE
 JV1152'MARK IS A STANDARD REFERENCE MARK DISK SET IN CONCRETE WHICH
 JV1152'PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED FITCH NO 2 1958.
 JV1152'
 JV1152'AZIMUTH MARK IS 35-1/2 FEET NORTH-NORTHEAST OF DRIVEWAY AND 1
 JV1152'FOOT SOUTH-SOUTHWEST OF WITNESS POST.  THE MARK IS A STANDARD
 JV1152'AZIMUTH MARK DISK SET IN CONCRETE WHICH PROJECTS ABOUT 4 INCHES
 JV1152'AND THE DISK IS STAMPED FITCH 1958.
 JV1152'
 JV1152'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 1 AND
 JV1152'PUTTY HILL ROAD IN PUTTY HILL, GO SOUTHWEST ON U.S. HIGHWAY 1
 JV1152'FOR 0.75 MILE TO SIDE ROAD LEFT, TURN SHARP LEFT AND GO EASTERLY
 JV1152'ON GRAVEL AVENUE FOR 0.05 MILE TO THE STATION ON RIGHT AS
 JV1152'DESCRIBED.
 JV1152'
 JV1152'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTHEAST ON
 JV1152'GRAVEL ROAD FOR 0.1 MILE TO THE MARK ON RIGHT AS DESCRIBED.
 JV1152'
 JV1152'THE AZIMUTH MARK IS VISIBLE FROM THE GROUND.
 JV1152'
 JV1152'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV1152
 JV1152                          STATION RECOVERY (1959)
 JV1152
 JV1152'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV1152'0.2 MI SW FROM PUTTY HILL.
 JV1152'0.25 MILE SOUTHWEST ALONG U.S. HIGHWAY 1 (BELAIR ROAD) FROM THE
 JV1152'FIRE STATION AT PUTTY HILL, THENCE ABOUT 100 YARDS SOUTH ALONG
 JV1152'GRAVEL AVENUE, NEAR THE NORTH EDGE OF A SMALL APPLE ORCHARD, ALONG
 JV1152'THE RIGHT-OF-WAY OF THE PROPOSED BELTWAY, 82 FEET SOUTHWEST
 JV1152'OF THE CENTER LINE OF THE AVENUE, 53 FEET WEST OF A 14 INCH
 JV1152'APPLE TREE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 JV1152'GROUND.
 JV1152
 JV1152                          STATION RECOVERY (1960)
 JV1152
 JV1152'RECOVERY NOTE BY MD STATE ROADS COMM 1960 (CWP)
 JV1152'STATION MARK AND AZIMUTH MARK WERE RECOVERED AT THIS TIME BY
 JV1152'MR. C.W. PARKS OF THE MARYLAND STATE ROADS COMMISSION.  HIGHWAY
 JV1152'CONSTRUCTION IN THE AREA MADE IT NECESSARY THAT THE AZIMUTH MARK
 JV1152'BE RESET.  A NEW MARK WAS SET BY MR. PARKS AND THE ORIGINAL DISK
 JV1152'WAS RETURNED TO THIS OFFICE.  DESCRIPTION AND DIRECTION ARE AS
 JV1152'FOLLOWS.
 JV1152'
 JV1152'AZIMUTH MARK IS A STANDARD DISK SET IN A CONCRETE POST, WHICH
 JV1152'PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED FITCH RESET
 JV1152'1960.  IT IS 105 FEET EAST OF A T-ROAD LEADING TO A 2-1/2 STORY
 JV1152'FARMHOUSE, 11.5 FEET SOUTH OF THE CENTERLINE OF THE ROADWAY AND
 JV1152'4.5 FEET SOUTHEAST OF G AND E CO. POLE NO. 59470.
 JV1152'
 JV1152'TO REACH FROM THE STATION, PROCEED NORTH ON BELAIR ROAD FROM
 JV1152'THE INTERSECTION OF GRAVEL AVENUE FOR 0.3 MILE TO A FIRE STATION
 JV1152'ON THE LEFT, THENCE LEFT ON ROAD ALONG THE NORTH SIDE OF THE FIRE
 JV1152'STATION FOR 0.2 MILE TO AZIMUTH MARK ON THE LEFT AS DESCRIBED.
 JV1152
 JV1152                          STATION RECOVERY (1995)
 JV1152
 JV1152'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1152'MARK NOT FOUND.
 JV1152
 JV1152                          STATION RECOVERY (1995)
 JV1152
 JV1152'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1152'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1151 ***********************************************************************
 JV1151  DESIGNATION -  FITCH RM 1
 JV1151  PID         -  JV1151
 JV1151  STATE/COUNTY-  MD/BALTIMORE
 JV1151  COUNTRY     -  US
 JV1151  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1151
 JV1151                         *CURRENT SURVEY CONTROL
 JV1151  ______________________________________________________________________
 JV1151* NAD 83(1986) POSITION- 39 22 07.26   (N) 076 30 51.35   (W)   HD_HELD1
 JV1151* NAVD 88 ORTHO HEIGHT -    65.469 (meters)      214.79  (feet) ADJUSTED
 JV1151  ______________________________________________________________________
 JV1151  GEOID HEIGHT    -        -32.825 (meters)                     GEOID18
 JV1151  DYNAMIC HEIGHT  -         65.434 (meters)      214.68  (feet) COMP
 JV1151  MODELED GRAVITY -    980,096.5   (mgal)                       NAVD 88
 JV1151
 JV1151  VERT ORDER      -  SECOND    CLASS 0
 JV1151
 JV1151.The horizontal coordinates were determined by differentially corrected
 JV1151.hand held GPS observations or other comparable positioning techniques
 JV1151.and have an estimated accuracy of +/- 3 meters.
 JV1151
 JV1151.The orthometric height was determined by differential leveling and
 JV1151.adjusted by the NATIONAL GEODETIC SURVEY
 JV1151.in June 1991.
 JV1151
 JV1151.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1151.GEOID18 height accuracy estimate available here.
 JV1151
 JV1151.Click photographs - Photos may exist for this station.
 JV1151
 JV1151.The dynamic height is computed by dividing the NAVD 88
 JV1151.geopotential number by the normal gravity value computed on the
 JV1151.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1151.degrees latitude (g = 980.6199 gals.).
 JV1151
 JV1151.The modeled gravity was interpolated from observed gravity values.
 JV1151
 JV1151;                    North         East    Units  Estimated Accuracy
 JV1151;SPC MD       -   189,047.0     441,857.6     MT  (+/- 3 meters HH1 GPS) 
 JV1151
 JV1151_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6955758784(NAD 83)
 JV1151
 JV1151                          SUPERSEDED SURVEY CONTROL
 JV1151
 JV1151  NGVD 29 (11/26/84)   65.708  (m)          215.58   (f) ADJUSTED    2 0
 JV1151
 JV1151.Superseded values are not recommended for survey control.
 JV1151
 JV1151.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1151.See file dsdata.pdf to determine how the superseded data were derived.
 JV1151
 JV1151_MARKER: DR = REFERENCE MARK DISK
 JV1151_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1151_STAMPING: FITCH NO 1 1958
 JV1151_MARK LOGO: CGS
 JV1151_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1151+STABILITY: SURFACE MOTION
 JV1151
 JV1151  HISTORY     - Date     Condition        Report By
 JV1151  HISTORY     - 1958     MONUMENTED       CGS
 JV1151  HISTORY     - 1959     GOOD             CGS
 JV1151  HISTORY     - 19950810 MARK NOT FOUND   USPSQD
 JV1151  HISTORY     - 19950821 MARK NOT FOUND   USPSQD
 JV1151
 JV1151                          STATION DESCRIPTION
 JV1151
 JV1151'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1151'0.2 MI SW FROM PUTTY HILL.
 JV1151'0.25 MILE SOUTHWEST ALONG U.S. HIGHWAY 1 (BELAIR ROAD) FROM THE
 JV1151'FIRE STATION AT PUTTY HILL, THENCE ABOUT 100 YARDS SOUTH ALONG
 JV1151'GRAVEL AVENUE, NEAR A SMALL APPLE ORCHARD, 48.3 FEET
 JV1151'NORTH-NORTHWEST OF THE STATION, 20 FEET SOUTHWEST OF THE CENTER
 JV1151'LINE OF THE AVENUE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV1151'THE GROUND.
 JV1151
 JV1151                          STATION RECOVERY (1995)
 JV1151
 JV1151'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1151'MARK NOT FOUND.
 JV1151
 JV1151                          STATION RECOVERY (1995)
 JV1151
 JV1151'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1151'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1153 ***********************************************************************
 JV1153  DESIGNATION -  FITCH RM 2
 JV1153  PID         -  JV1153
 JV1153  STATE/COUNTY-  MD/BALTIMORE
 JV1153  COUNTRY     -  US
 JV1153  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1153
 JV1153                         *CURRENT SURVEY CONTROL
 JV1153  ______________________________________________________________________
 JV1153* NAD 83(1986) POSITION- 39 22 06.32   (N) 076 30 51.44   (W)   HD_HELD1
 JV1153* NAVD 88 ORTHO HEIGHT -    64.190 (meters)      210.60  (feet) ADJUSTED
 JV1153  ______________________________________________________________________
 JV1153  GEOID HEIGHT    -        -32.825 (meters)                     GEOID18
 JV1153  DYNAMIC HEIGHT  -         64.156 (meters)      210.49  (feet) COMP
 JV1153  MODELED GRAVITY -    980,096.5   (mgal)                       NAVD 88
 JV1153
 JV1153  VERT ORDER      -  SECOND    CLASS 0
 JV1153
 JV1153.The horizontal coordinates were determined by differentially corrected
 JV1153.hand held GPS observations or other comparable positioning techniques
 JV1153.and have an estimated accuracy of +/- 3 meters.
 JV1153
 JV1153.The orthometric height was determined by differential leveling and
 JV1153.adjusted by the NATIONAL GEODETIC SURVEY
 JV1153.in June 1991.
 JV1153
 JV1153.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1153.GEOID18 height accuracy estimate available here.
 JV1153
 JV1153.Click photographs - Photos may exist for this station.
 JV1153
 JV1153.The dynamic height is computed by dividing the NAVD 88
 JV1153.geopotential number by the normal gravity value computed on the
 JV1153.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1153.degrees latitude (g = 980.6199 gals.).
 JV1153
 JV1153.The modeled gravity was interpolated from observed gravity values.
 JV1153
 JV1153;                    North         East    Units  Estimated Accuracy
 JV1153;SPC MD       -   189,018.0     441,855.6     MT  (+/- 3 meters HH1 GPS) 
 JV1153
 JV1153_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6955458755(NAD 83)
 JV1153
 JV1153                          SUPERSEDED SURVEY CONTROL
 JV1153
 JV1153  NGVD 29 (11/26/84)   64.429  (m)          211.38   (f) ADJUSTED    2 0
 JV1153
 JV1153.Superseded values are not recommended for survey control.
 JV1153
 JV1153.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1153.See file dsdata.pdf to determine how the superseded data were derived.
 JV1153
 JV1153_MARKER: DR = REFERENCE MARK DISK
 JV1153_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1153_STAMPING: FITCH NO 2 1958
 JV1153_MARK LOGO: CGS
 JV1153_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1153+STABILITY: SURFACE MOTION
 JV1153
 JV1153  HISTORY     - Date     Condition        Report By
 JV1153  HISTORY     - 1958     MONUMENTED       CGS
 JV1153  HISTORY     - 1959     GOOD             CGS
 JV1153  HISTORY     - 19950810 MARK NOT FOUND   USPSQD
 JV1153
 JV1153                          STATION DESCRIPTION
 JV1153
 JV1153'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1153'0.2 MI SW FROM PUTTY HILL.
 JV1153'0.25 MILE SOUTHWEST ALONG U.S. HIGHWAY 1 (BELAIR ROAD) FROM THE
 JV1153'FIRE STATION AT PUTTY HILL, THENCE ABOUT 100 YARDS SOUTH ALONG
 JV1153'GRAVEL AVENUE, NEAR A SMALL APPLE ORCHARD, 53.5 FEET
 JV1153'SOUTH-SOUTHWEST OF THE STATION, 18 FEET NORTHWEST OF A LARGE
 JV1153'TREE, SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES
 JV1153'ABOVE THE GROUND.
 JV1153
 JV1153                          STATION RECOVERY (1995)
 JV1153
 JV1153'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV1153'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1870 ***********************************************************************
 HU1870  DESIGNATION -  FITZ
 HU1870  PID         -  HU1870
 HU1870  STATE/COUNTY-  MD/SOMERSET
 HU1870  COUNTRY     -  US
 HU1870  USGS QUAD   -  MONIE (2016)
 HU1870
 HU1870                         *CURRENT SURVEY CONTROL
 HU1870  ______________________________________________________________________
 HU1870* NAD 83(1993) POSITION- 38 09 17.50841(N) 075 47 25.44937(W)   ADJUSTED
 HU1870* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1870  ______________________________________________________________________
 HU1870  GEOID HEIGHT    -        -35.967 (meters)                     GEOID18
 HU1870  LAPLACE CORR    -         -1.85  (seconds)                    DEFLEC18
 HU1870  HORZ ORDER      -  THIRD
 HU1870
 HU1870.The horizontal coordinates were established by classical geodetic methods
 HU1870.and adjusted by the National Geodetic Survey in November 1994.
 HU1870
 HU1870.The orthometric height was scaled from a topographic map.
 HU1870
 HU1870.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1870.GEOID18 height accuracy estimate available here.
 HU1870
 HU1870.Click photographs - Photos may exist for this station.
 HU1870
 HU1870.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1870
 HU1870. The following values were computed from the NAD 83(1993) position.
 HU1870
 HU1870;                    North         East     Units Scale Factor Converg.
 HU1870;SPC MD       -    54,894.757   506,018.020   MT  1.00002842   +0 45 33.1
 HU1870;SPC MD       -   180,100.55  1,660,160.79   sFT  1.00002842   +0 45 33.1
 HU1870;UTM  18      - 4,223,292.768   430,750.425   MT  0.99965906   -0 29 18.0
 HU1870
 HU1870!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1870!SPC MD       -   1.00000568  x   1.00002842  =   1.00003410
 HU1870!UTM  18      -   1.00000568  x   0.99965906  =   0.99966474
 HU1870
 HU1870:                Primary Azimuth Mark                     Grid Az
 HU1870:SPC MD       -  WAB                                      067 55 44.5
 HU1870:UTM  18      -  WAB                                      069 10 35.6
 HU1870
 HU1870_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3075023292(NAD 83)
 HU1870
 HU1870|---------------------------------------------------------------------|
 HU1870| PID    Reference Object                     Distance      Geod. Az  |
 HU1870|                                                           dddmmss.s |
 HU1870| HU1873 WAB                                 APPROX. 0.9 KM 0684117.6 |
 HU1870|---------------------------------------------------------------------|
 HU1870
 HU1870                          SUPERSEDED SURVEY CONTROL
 HU1870
 HU1870  NAD 83(1991)-  38 09 17.50598(N)    075 47 25.44819(W) AD(       ) 3
 HU1870  NAD 83(1986)-  38 09 17.50439(N)    075 47 25.47432(W) AD(       ) 3
 HU1870  NAD 27      -  38 09 17.06100(N)    075 47 26.69600(W) AD(       ) 3
 HU1870  USSD        -  38 09 17.41700(N)    075 47 26.43900(W) AD(       ) 3
 HU1870
 HU1870.Superseded values are not recommended for survey control.
 HU1870
 HU1870.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1870.See file dsdata.pdf to determine how the superseded data were derived.
 HU1870
 HU1870_MARKER: H = DRILL HOLE
 HU1870_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1870_STAMPING: M.S.F.C. U.S.C.S.
 HU1870_MARK LOGO: MDSFC
 HU1870_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1870+STABILITY: SURFACE MOTION
 HU1870
 HU1870  HISTORY     - Date     Condition        Report By
 HU1870  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1870  HISTORY     - 1942     GOOD             CGS
 HU1870  HISTORY     - 1949     GOOD             CGS
 HU1870  HISTORY     - 1965     GOOD             LOCENG
 HU1870  HISTORY     - 1973     GOOD             MDDNR
 HU1870  HISTORY     - 1982     GOOD             LOCENG
 HU1870
 HU1870                          STATION DESCRIPTION
 HU1870
 HU1870'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1870'STATION IS ON THE NORTHWESTERN SHORE OF THE UPPER PART OF
 HU1870'MANOKIN RIVER, ABOUT 1 MILE NE FROM LOCUST POINT, ON THE EDGE
 HU1870'OF THE LAWN OF A LARGE OLD RED BRICK HOUSE OWNED BY A
 HU1870'MR. FITZGERALD, ABOUT 4 YARDS W OF SHORE AND 23 YARDS SW OF
 HU1870'EXTREME END OF POINT.  FOUR LOCUST TREES, EACH 8 INCHES IN
 HU1870'DIAMETER, STAND BACK OF STATION, AND THERE IS A COBBLESTONE
 HU1870'ABOUT 12 INCHES IN DIAMETER ABOUT 2 YARDS TO THE E.
 HU1870'THERE IS A SMALL POND 20 YARDS TO THE N OF THE STATION.
 HU1870'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HU1870'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HU1870'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HU1870'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK
 HU1870'IN TOP OF POST.  DISTANCES AND BEARINGS TO VARIOUS
 HU1870'POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY OF WHITE HOUSE,
 HU1870'1/2 MILE, S 49 DEG 25 MIN W.  NAIL IN BLAZE IN 8-INCH LOCUST
 HU1870'TREE, 5.42 METERS (17.78 FEET), N 64 DEG 08 MIN W.  NEAR CORNER OF
 HU1870'BRICK HOUSE, 100 YARDS N 29 DEG 36 MIN W.  NAIL IN BLAZE IN
 HU1870'8-INCH LOCUST TREE, 6.24 METERS (20.47 FEET), N 39 DEG 42 MIN E.
 HU1870'CHIMNEY OF UNPAINTED HOUSE, 1/2 MILE, N 54 DEG 52 MIN E.
 HU1870'CHIMNEY OF CABIN NEAR STATION WAB, 1/2 MILE, N 68 DEG 42 MIN E.
 HU1870
 HU1870                          STATION RECOVERY (1942)
 HU1870
 HU1870'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1870'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HU1870'ORIGINAL DESCRIPTION--
 HU1870'
 HU1870'(1) DELETE 4 YARDS W . . . . END OF POINT.  THE SHORELINE HAS
 HU1870'CHANGED, SEE NEW DESCRIPTION FOR SHORELINE DATA.
 HU1870'
 HU1870'(2) DELETE ALL REFERENCE DATA PERTAINING TO LOCUST TREES.  THESE
 HU1870'LOCUST TREES ARE DESTROYED.
 HU1870'
 HU1870'(3) THE RED BRICK HOUSE IS NOW OWNED BY MR. FUNKE, NOT
 HU1870'MR. FITZGERALD.
 HU1870'
 HU1870'(4) DELETE REFERENCE DATA MADE TO A COBBLESTONE AND A SMALL
 HU1870'POND.  BOTH ARE DESTROYED.
 HU1870'
 HU1870'(5) THE MONUMENT EXTENDS 8 INCHES ABOVE GROUND, NOT 4 INCHES.
 HU1870'
 HU1870'THIS STATION IS LOCATED ON THE NORTHWESTERN SHORE OF THE UPPER
 HU1870'PART OF THE MANOKIN RIVER, ABOUT 1.0 MILE NE FROM LOCUST POINT,
 HU1870'ON THE SE EDGE OF THE LAWN OF A LARGE OLD RED BRICK HOUSE OWNED
 HU1870'BY A MR. FUNKE, 97 METERS SE OF THE SE CORNER OF THE LARGE RED
 HU1870'BRICK HOUSE, ABOUT 65 METERS SW OF A SMALL PIER AND 18.5 METERS
 HU1870'N AND 13.5 METERS W OF THE MEAN HIGH-WATER LINE OF THE RIVER.
 HU1870'
 HU1870'THE STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HU1870'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN
 HU1870'8-INCH SQUARE CONCRETE POST, PROJECTING 8 INCHES ABOVE THE
 HU1870'GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK IN
 HU1870'THE TOP OF THE POST.  THE STATION IS IN GOOD CONDITION.
 HU1870'
 HU1870'TO REACH THE STATION FROM THE POST OFFICE IN ORIOLE (0.0 MILE
 HU1870'AT POST OFFICE) TAKE MACADAM ROAD S, AT 0.8 MILE TURN RIGHT
 HU1870'AND FOLLOW DIRT ROAD, AT 1.2 MILES TAKE LEFT FORK, AT 1.8
 HU1870'MILES TURN LEFT AT 2.3 MILES ARRIVE AT LARGE RED BRICK HOUSE
 HU1870'(ELMWOOD FARM), AND THE STATION ABOUT 100 YARDS SE OF THE
 HU1870'BRICK HOUSE AND NEAR THE RIVER.
 HU1870
 HU1870                          STATION RECOVERY (1949)
 HU1870
 HU1870'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1949 (EBL)
 HU1870'BECAUSE OF SOME MINOR DISCREPANCIES THE DESCRIPTION IS REWRITTEN.
 HU1870'
 HU1870'STATION IS LOCATED ON THE NW SHORE OF THE UPPER PART OF THE
 HU1870'MANOKIN RIVER, ABOUT 1.0 MILE NE FROM LOCUST POINT, ON THE SE
 HU1870'EDGE OF THE LAWN OF A LARGE OLD RED BRICK HOUSE OWNED BY MR. NORMAN
 HU1870'TAYLOR, 97 METERS SE OF THE SE CORNER OF THE BRICK HOUSE,
 HU1870'ABOUT 65 METERS NE OF THE RUINS OF A PIER AT END OF A RAIL
 HU1870'FENCE, AND 15 METERS N AND 12 METERS W OF THE SHORELINE.  THE
 HU1870'SHORELINE IS RIPRAPPED HERE.
 HU1870'
 HU1870'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HU1870'SHELL FISH SURVEY MONUMENT, WHICH IS AN 8-INCH SQUARE CONCRETE
 HU1870'POST PROJECTING ABOUT 6 INCHES ABOVE THE GROUND.  THE LETTERS
 HU1870'M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK IN THE TOP OF THE
 HU1870'POST.  THE MARK IS IN GOOD CONDITION.
 HU1870
 HU1870                          STATION RECOVERY (1965)
 HU1870
 HU1870'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1965 (GEH)
 HU1870'RECOVERED BY MDCBA.
 HU1870'
 HU1870'STATION IN GOOD CONDITION.
 HU1870'
 HU1870'DESCRIPTION ADEQUATE BUT ADD AREA OF POINT RECENTLY REPLANTED
 HU1870'WITH CEDAR TREES.
 HU1870
 HU1870                          STATION RECOVERY (1973)
 HU1870
 HU1870'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HU1870'USCS-MSFC GOOD
 HU1870'STATION RECOVERED DESCRIPTION SHOULD BE CHANGED TO AID IN
 HU1870'RECOVERY.  STA. IS LOCATED ON MARSH POINT 15 YARDS WEST OF POINT,
 HU1870'14 YARDS NW OF POINT, 16 YARDS N OF POINT, 11 YARDS SE OF DEAD
 HU1870'CEDAR TREE, AND 14 YARDS E OF CEDAR TREE.  MARK PROJECTS 1 FOOT AND
 HU1870'HAS WITNESS POST AND SIGN ON E SIDE OF MARK.
 HU1870
 HU1870                          STATION RECOVERY (1982)
 HU1870
 HU1870'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1982 (LW)
 HU1870'CAST MSFC USCS RECOVERED GOOD.
 HU1870'
 HU1870'DEAD CEDAR HAS BEEN CUT DOWN.  STUMP REMAINS.
 HU1870'
 HU1870'PROPERTY NOW CALLED ELMWOOD IS IN PROCESS OF ESTATE SETTLEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6264 ***********************************************************************
 JV6264  DESIGNATION -  FIVE FORKS
 JV6264  PID         -  JV6264
 JV6264  STATE/COUNTY-  MD/HARFORD
 JV6264  COUNTRY     -  US
 JV6264  USGS QUAD   -  FAWN GROVE (2019)
 JV6264
 JV6264                         *CURRENT SURVEY CONTROL
 JV6264  ______________________________________________________________________
 JV6264* NAD 83(2011) POSITION- 39 41 51.19242(N) 076 25 02.66500(W)   ADJUSTED
 JV6264* NAD 83(2011) ELLIP HT-   126.509 (meters)        (06/27/12)   ADJUSTED
 JV6264* NAD 83(2011) EPOCH   -  2010.00
 JV6264* NAVD 88 ORTHO HEIGHT -   159.152 (meters)      522.15  (feet) ADJUSTED
 JV6264  ______________________________________________________________________
 JV6264  GEOID HEIGHT    -        -32.654 (meters)                     GEOID18
 JV6264  NAD 83(2011) X  -  1,154,112.973 (meters)                     COMP
 JV6264  NAD 83(2011) Y  - -4,776,880.663 (meters)                     COMP
 JV6264  NAD 83(2011) Z  -  4,052,284.863 (meters)                     COMP
 JV6264  LAPLACE CORR    -         -3.32  (seconds)                    DEFLEC18
 JV6264  DYNAMIC HEIGHT  -        159.073 (meters)      521.89  (feet) COMP
 JV6264  MODELED GRAVITY -    980,124.1   (mgal)                       NAVD 88
 JV6264
 JV6264  VERT ORDER      -  FIRST     CLASS II
 JV6264
 JV6264  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6264  Standards:
 JV6264         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6264            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6264  -------------------------------------------------------------------
 JV6264  NETWORK    1.59   5.00           0.65   0.63   2.55      0.30387044
 JV6264  -------------------------------------------------------------------
 JV6264  Click here for local accuracies and other accuracy information.
 JV6264
 JV6264.The horizontal coordinates were established by GPS observations
 JV6264.and adjusted by the National Geodetic Survey in June 2012.
 JV6264
 JV6264.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6264.been affixed to the stable North American tectonic plate. See 
 JV6264.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6264
 JV6264.The horizontal coordinates are valid at the epoch date displayed above
 JV6264.which is a decimal equivalence of Year/Month/Day.
 JV6264
 JV6264.The orthometric height was determined by differential leveling and
 JV6264.adjusted by the NATIONAL GEODETIC SURVEY
 JV6264.in June 1991.
 JV6264
 JV6264.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6264.GEOID18 height accuracy estimate available here.
 JV6264
 JV6264.Click photographs - Photos may exist for this station.
 JV6264
 JV6264.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6264
 JV6264.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6264
 JV6264.The ellipsoidal height was determined by GPS observations
 JV6264.and is referenced to NAD 83.
 JV6264
 JV6264.The dynamic height is computed by dividing the NAVD 88
 JV6264.geopotential number by the normal gravity value computed on the
 JV6264.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6264.degrees latitude (g = 980.6199 gals.).
 JV6264
 JV6264.The modeled gravity was interpolated from observed gravity values.
 JV6264
 JV6264. The following values were computed from the NAD 83(2011) position.
 JV6264
 JV6264;                    North         East     Units Scale Factor Converg.
 JV6264;SPC MD       -   225,608.775   449,970.956   MT  1.00005269   +0 21 56.4
 JV6264;SPC MD       -   740,184.79  1,476,279.71   sFT  1.00005269   +0 21 56.4
 JV6264;SPC PA S     -    41,303.799   714,296.551   MT  1.00004523   +0 51 52.5
 JV6264;SPC PA S     -   135,510.88  2,343,487.93   sFT  1.00004523   +0 51 52.5
 JV6264;UTM  18      - 4,395,149.713   378,476.162   MT  0.99978182   -0 54 19.6
 JV6264
 JV6264!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6264!SPC MD       -   0.99998015  x   1.00005269  =   1.00003284
 JV6264!SPC PA S     -   0.99998015  x   1.00004523  =   1.00002538
 JV6264!UTM  18      -   0.99998015  x   0.99978182  =   0.99976198
 JV6264
 JV6264:                Primary Azimuth Mark                     Grid Az
 JV6264:SPC MD       -  FIVE FORKS AZ MK                         048 15 25.5
 JV6264:SPC PA S     -  FIVE FORKS AZ MK                         047 45 29.4
 JV6264:UTM  18      -  FIVE FORKS AZ MK                         049 31 41.5
 JV6264
 JV6264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7847695149(NAD 83)
 JV6264
 JV6264|---------------------------------------------------------------------|
 JV6264| PID    Reference Object                     Distance      Geod. Az  |
 JV6264|                                                           dddmmss.s |
 JV6264| JV6300 FIVE FORKS AZ MK                    484.541 METERS 0483721.9 |
 JV6264|---------------------------------------------------------------------|
 JV6264
 JV6264                          SUPERSEDED SURVEY CONTROL
 JV6264
 JV6264  NAD 83(2007)-  39 41 51.19273(N)    076 25 02.66574(W) AD(2002.00) 0
 JV6264  ELLIP H (02/10/07)  126.530  (m)                       GP(2002.00)    
 JV6264  ELLIP H (09/18/02)  126.548  (m)                       GP(       ) 4 2
 JV6264  NAD 83(1991)-  39 41 51.19280(N)    076 25 02.66510(W) AD(       ) 1
 JV6264  ELLIP H (01/27/92)  126.543  (m)                       GP(       ) 4 1
 JV6264  NAD 83(1986)-  39 41 51.18579(N)    076 25 02.67114(W) AD(       ) 1
 JV6264  NGVD 29             159.39   (m)          522.9    (f) LEVELING    3  
 JV6264
 JV6264.Superseded values are not recommended for survey control.
 JV6264
 JV6264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6264.See file dsdata.pdf to determine how the superseded data were derived.
 JV6264
 JV6264_MARKER: DD = SURVEY DISK
 JV6264_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6264_STAMPING: 110 FIVE FORKS 1989
 JV6264_MARK LOGO: MD-025
 JV6264_PROJECTION: RECESSED 3 CENTIMETERS
 JV6264_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6264_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6264+STABILITY: SURFACE MOTION
 JV6264_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6264+SATELLITE: SATELLITE OBSERVATIONS - November 12, 2018
 JV6264
 JV6264  HISTORY     - Date     Condition        Report By
 JV6264  HISTORY     - 1989     MONUMENTED       RDA
 JV6264  HISTORY     - 20181112 GOOD             DEWDAV
 JV6264
 JV6264                          STATION DESCRIPTION
 JV6264
 JV6264'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6264'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND
 JV6264'ABOUT 5 MILES WEST OF THE VILLAGE OF WHITEFORD.  THE STATION IS AT
 JV6264'THE INTERSECTION OF STATE HIGHWAY 24 AND STATE HIGHWAY 136 IN THE
 JV6264'SOUTHWEST CORNER OF THE INTERSECTION.  THE STATION IS A STANDARD
 JV6264'HARFORD COUNTY STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND
 JV6264'STAMPED 110 FIVE FORKS 1989.  THE STATION IS 31.9 FEET SOUTHWEST OF
 JV6264'THE CENTERLINE OF HIGHWAY 24, 18.8 FEET NORTHWEST OF CONOWINGO POWER
 JV6264'POLE NUMBER 13820, 32.9 FEET SOUTHEAST OF THE CENTERLINE OF HIGHWAY
 JV6264'136.
 JV6264
 JV6264                          STATION RECOVERY (2018)
 JV6264
 JV6264'RECOVERY NOTE BY DEWBERRY DAVIS 2018 (GDS)
 JV6264'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6300 ***********************************************************************
 JV6300  DESIGNATION -  FIVE FORKS AZ MK
 JV6300  PID         -  JV6300
 JV6300  STATE/COUNTY-  MD/HARFORD
 JV6300  COUNTRY     -  US
 JV6300  USGS QUAD   -  FAWN GROVE (2019)
 JV6300
 JV6300                         *CURRENT SURVEY CONTROL
 JV6300  ______________________________________________________________________
 JV6300* NAD 83(2011) POSITION- 39 42 01.57718(N) 076 24 47.40352(W)   ADJUSTED
 JV6300* NAD 83(2011) ELLIP HT-   132.165 (meters)        (06/27/12)   ADJUSTED
 JV6300* NAD 83(2011) EPOCH   -  2010.00
 JV6300* NAVD 88 ORTHO HEIGHT -   164.820 (meters)      540.75  (feet) ADJUSTED
 JV6300  ______________________________________________________________________
 JV6300  GEOID HEIGHT    -        -32.663 (meters)                     GEOID18
 JV6300  NAD 83(2011) X  -  1,154,419.372 (meters)                     COMP
 JV6300  NAD 83(2011) Y  - -4,776,600.629 (meters)                     COMP
 JV6300  NAD 83(2011) Z  -  4,052,534.907 (meters)                     COMP
 JV6300  LAPLACE CORR    -         -3.31  (seconds)                    DEFLEC18
 JV6300  DYNAMIC HEIGHT  -        164.738 (meters)      540.48  (feet) COMP
 JV6300  MODELED GRAVITY -    980,123.9   (mgal)                       NAVD 88
 JV6300
 JV6300  VERT ORDER      -  FIRST     CLASS II
 JV6300
 JV6300  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6300  Standards:
 JV6300         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6300            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6300  -------------------------------------------------------------------
 JV6300  NETWORK    1.69   5.43           0.69   0.67   2.77      0.34094337
 JV6300  -------------------------------------------------------------------
 JV6300  Click here for local accuracies and other accuracy information.
 JV6300
 JV6300.The horizontal coordinates were established by GPS observations
 JV6300.and adjusted by the National Geodetic Survey in June 2012.
 JV6300
 JV6300.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6300.been affixed to the stable North American tectonic plate. See 
 JV6300.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6300
 JV6300.The horizontal coordinates are valid at the epoch date displayed above
 JV6300.which is a decimal equivalence of Year/Month/Day.
 JV6300
 JV6300.The orthometric height was determined by differential leveling and
 JV6300.adjusted by the NATIONAL GEODETIC SURVEY
 JV6300.in June 1991.
 JV6300
 JV6300.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6300.GEOID18 height accuracy estimate available here.
 JV6300
 JV6300.Click photographs - Photos may exist for this station.
 JV6300
 JV6300.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6300
 JV6300.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6300
 JV6300.The ellipsoidal height was determined by GPS observations
 JV6300.and is referenced to NAD 83.
 JV6300
 JV6300.The dynamic height is computed by dividing the NAVD 88
 JV6300.geopotential number by the normal gravity value computed on the
 JV6300.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6300.degrees latitude (g = 980.6199 gals.).
 JV6300
 JV6300.The modeled gravity was interpolated from observed gravity values.
 JV6300
 JV6300. The following values were computed from the NAD 83(2011) position.
 JV6300
 JV6300;                    North         East     Units Scale Factor Converg.
 JV6300;SPC MD       -   225,931.395   450,332.511   MT  1.00005342   +0 22 05.9
 JV6300;SPC MD       -   741,243.25  1,477,465.91   sFT  1.00005342   +0 22 05.9
 JV6300;SPC PA S     -    41,629.553   714,655.280   MT  1.00004458   +0 52 02.4
 JV6300;SPC PA S     -   136,579.63  2,344,664.86   sFT  1.00004458   +0 52 02.4
 JV6300;UTM  18      - 4,395,464.147   378,844.685   MT  0.99978072   -0 54 10.1
 JV6300
 JV6300!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6300!SPC MD       -   0.99997927  x   1.00005342  =   1.00003268
 JV6300!SPC PA S     -   0.99997927  x   1.00004458  =   1.00002384
 JV6300!UTM  18      -   0.99997927  x   0.99978072  =   0.99975999
 JV6300
 JV6300:                Primary Azimuth Mark                     Grid Az
 JV6300:SPC MD       -  FIVE FORKS                               228 15 25.8
 JV6300:SPC PA S     -  FIVE FORKS                               227 45 29.3
 JV6300:UTM  18      -  FIVE FORKS                               229 31 41.8
 JV6300
 JV6300_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7884495464(NAD 83)
 JV6300
 JV6300|---------------------------------------------------------------------|
 JV6300| PID    Reference Object                     Distance      Geod. Az  |
 JV6300|                                                           dddmmss.s |
 JV6300| JV6264 FIVE FORKS                          484.541 METERS 2283731.7 |
 JV6300|---------------------------------------------------------------------|
 JV6300
 JV6300                          SUPERSEDED SURVEY CONTROL
 JV6300
 JV6300  NAD 83(2007)-  39 42 01.57749(N)    076 24 47.40425(W) AD(2002.00) 0
 JV6300  ELLIP H (02/10/07)  132.186  (m)                       GP(2002.00)    
 JV6300  ELLIP H (09/18/02)  132.204  (m)                       GP(       ) 4 2
 JV6300  NAD 83(1991)-  39 42 01.57754(N)    076 24 47.40363(W) AD(       ) 1
 JV6300  ELLIP H (01/27/92)  132.199  (m)                       GP(       ) 4 1
 JV6300  NAD 83(1986)-  39 42 01.57054(N)    076 24 47.40966(W) AD(       ) 1
 JV6300  NGVD 29             165.06   (m)          541.5    (f) LEVELING    3  
 JV6300
 JV6300.Superseded values are not recommended for survey control.
 JV6300
 JV6300.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6300.See file dsdata.pdf to determine how the superseded data were derived.
 JV6300
 JV6300_MARKER: DZ = AZIMUTH MARK DISK
 JV6300_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6300_STAMPING: 110 FIVE FORKS 1989
 JV6300_MARK LOGO: MD-025
 JV6300_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6300_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6300+STABILITY: SURFACE MOTION
 JV6300_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6300+SATELLITE: SATELLITE OBSERVATIONS - January 04, 1990
 JV6300
 JV6300  HISTORY     - Date     Condition        Report By
 JV6300  HISTORY     - 1989     MONUMENTED       RDA
 JV6300  HISTORY     - 19900104 GOOD
 JV6300
 JV6300                          STATION DESCRIPTION
 JV6300
 JV6300'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6300'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND
 JV6300'ABOUT 5 MILES WEST OF THE VILLAGE OF WHITEFORD.  THE STATION IS AT
 JV6300'THE INTERSECTION OF STATE HIGHWAY 24 AND STATE HIGHWAY 136 IN THE
 JV6300'SOUTHWEST CORNER OF THE INTERSECTION.  TO REACH THE AZIMUTH MARK FROM
 JV6300'THE STATION PROCEED EAST ALONG HIGHWAY 136 0.3 MILES TO THE MARK ON
 JV6300'THE LEFT.  THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET IN
 JV6300'CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 110 FIVE FORKS 1989.  THE
 JV6300'MARK IS 19.1 FEET NORTHWEST OF THE CENTERLINE OF HIGHWAY 136, 165.4
 JV6300'FEET SOUTHWEST OF A POWER POLE WITH NO NUMBER, 152.2 FEET NORTHEAST
 JV6300'OF ANOTHER POWER POLE WITH NO NUMBER.
 JV6300
 JV6300                          STATION RECOVERY (1990)
 JV6300
 JV6300'RECOVERED 1990
 JV6300'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3986 ***********************************************************************
 AE3986  DESIGNATION -  FIX 1
 AE3986  PID         -  AE3986
 AE3986  STATE/COUNTY-  MD/BALTIMORE
 AE3986  COUNTRY     -  US
 AE3986  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3986
 AE3986                         *CURRENT SURVEY CONTROL
 AE3986  ______________________________________________________________________
 AE3986* NAD 83(1986) POSITION- 39 19 43.     (N) 076 25 15.     (W)   SCALED
 AE3986* NAVD 88 ORTHO HEIGHT -     5.510 (meters)       18.08  (feet) ADJUSTED
 AE3986  ______________________________________________________________________
 AE3986  GEOID HEIGHT    -        -33.028 (meters)                     GEOID18
 AE3986  DYNAMIC HEIGHT  -          5.507 (meters)       18.07  (feet) COMP
 AE3986  MODELED GRAVITY -    980,108.0   (mgal)                       NAVD 88
 AE3986
 AE3986  VERT ORDER      -  THIRD
 AE3986
 AE3986.The horizontal coordinates were scaled from a map and have
 AE3986.an estimated accuracy of +/- 6 seconds.
 AE3986
 AE3986.The orthometric height was determined by differential leveling and
 AE3986.adjusted by the NATIONAL GEODETIC SURVEY
 AE3986.in February 1998.
 AE3986
 AE3986.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3986.GEOID18 height accuracy estimate available here.
 AE3986
 AE3986.Click photographs - Photos may exist for this station.
 AE3986
 AE3986.The dynamic height is computed by dividing the NAVD 88
 AE3986.geopotential number by the normal gravity value computed on the
 AE3986.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3986.degrees latitude (g = 980.6199 gals.).
 AE3986
 AE3986.The modeled gravity was interpolated from observed gravity values.
 AE3986
 AE3986;                    North         East    Units  Estimated Accuracy
 AE3986;SPC MD       -   184,650.      449,940.      MT  (+/- 180 meters Scaled)
 AE3986
 AE3986_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ775542(NAD 83)
 AE3986
 AE3986                          SUPERSEDED SURVEY CONTROL
 AE3986
 AE3986.No superseded survey control is available for this station.
 AE3986
 AE3986_MARKER: I = METAL ROD
 AE3986_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 AE3986_MAGNETIC: I = MARKER IS A STEEL ROD
 AE3986_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AE3986_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3986+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AE3986
 AE3986  HISTORY     - Date     Condition        Report By
 AE3986  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3986
 AE3986                          STATION DESCRIPTION
 AE3986
 AE3986'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3986'THE STATION IS LOCATED 10 MI (16.1 KM) EAST FROM THE CENTER OF
 AE3986'BALTIMORE, 3.5 MI (5.6 KM) SOUTH OF WHITE MARSH AND 1.0 MI (1.6 KM)
 AE3986'EAST OF MIDDLE RIVER.  OWNERSHIP--MARTIN STATE AIRPORT. TO REACH
 AE3986'STATION FROM THE POST OFFICE IN MIDDLE RIVER, GO SOUTHEAST ON STATE
 AE3986'HIGHWAY 587 FOR 0.4 MI (0.6 KM) TO THE ENTRANCE TO MARTIN STATE
 AE3986'AIRPORT ON THE LEFT.  TURN LEFT AND GO 0.15 MI (0.24 KM) TO THE
 AE3986'STATION ON RIGHT, A IRON REBAR WITH A PLASTIC CAP MARKED CONTROL POINT
 AE3986'DRIVEN IN THE GROUND IN A GRASSY AREA.  IT IS 49.12 FT (14.97 M)
 AE3986'NORTHEAST OF THE NORTHEAST CORNER OF A METAL OFFICE BUILDING, 12.15 FT
 AE3986'(3.70 M) SOUTHWEST OF A CHAINLINK FENCE AND 7.18 FT (2.19 M) SOUTHWEST
 AE3986'OF THE EDGE OF A CONCRETE WALK AND IS ABOUT LEVEL WITH THE TAXI AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6749 ***********************************************************************
 HV6749  DESIGNATION -  FLAG POND 1897
 HV6749  PID         -  HV6749
 HV6749  STATE/COUNTY-  MD/CALVERT
 HV6749  COUNTRY     -  US
 HV6749  USGS QUAD   -  COVE POINT (2016)
 HV6749
 HV6749                         *CURRENT SURVEY CONTROL
 HV6749  ______________________________________________________________________
 HV6749* NAD 83(1991) POSITION- 38 27 14.22895(N) 076 27 32.55083(W)   ADJUSTED
 HV6749* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6749  ______________________________________________________________________
 HV6749  GEOID HEIGHT    -        -34.272 (meters)                     GEOID18
 HV6749  LAPLACE CORR    -         -4.19  (seconds)                    DEFLEC18
 HV6749  HORZ ORDER      -  THIRD
 HV6749
 HV6749.The horizontal coordinates were established by classical geodetic methods
 HV6749.and adjusted by the National Geodetic Survey in January 1992.
 HV6749
 HV6749.The orthometric height was scaled from a topographic map.
 HV6749
 HV6749.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6749.GEOID18 height accuracy estimate available here.
 HV6749
 HV6749.Click photographs - Photos may exist for this station.
 HV6749
 HV6749.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6749
 HV6749. The following values were computed from the NAD 83(1991) position.
 HV6749
 HV6749;                    North         East     Units Scale Factor Converg.
 HV6749;SPC MD       -    87,531.833   447,217.927   MT  0.99997679   +0 20 22.3
 HV6749;SPC MD       -   287,177.36  1,467,247.48   sFT  0.99997679   +0 20 22.3
 HV6749;UTM  18      - 4,257,192.125   372,690.543   MT  0.99979960   -0 54 26.9
 HV6749
 HV6749!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6749!SPC MD       -   1.00000526  x   0.99997679  =   0.99998205
 HV6749!UTM  18      -   1.00000526  x   0.99979960  =   0.99980486
 HV6749
 HV6749:                Primary Azimuth Mark                     Grid Az
 HV6749:SPC MD       -  PARKER                                   328 40 40.0
 HV6749:UTM  18      -  PARKER                                   329 55 29.2
 HV6749
 HV6749_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7269057192(NAD 83)
 HV6749
 HV6749|---------------------------------------------------------------------|
 HV6749| PID    Reference Object                     Distance      Geod. Az  |
 HV6749|                                                           dddmmss.s |
 HV6749| HV7314 PARKER                              APPROX. 9.6 KM 3290102.3 |
 HV6749|---------------------------------------------------------------------|
 HV6749
 HV6749                          SUPERSEDED SURVEY CONTROL
 HV6749
 HV6749  NAD 83(1986)-  38 27 14.22810(N)    076 27 32.56551(W) AD(       ) 3
 HV6749  NAD 27      -  38 27 13.78900(N)    076 27 33.74100(W) AD(       ) 3
 HV6749  USSD        -  38 27 14.16200(N)    076 27 33.52400(W) AD(       ) 3
 HV6749
 HV6749.Superseded values are not recommended for survey control.
 HV6749
 HV6749.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6749.See file dsdata.pdf to determine how the superseded data were derived.
 HV6749
 HV6749_MARKER: U = CONCRETE POST
 HV6749_SETTING: 0 = UNSPECIFIED SETTING
 HV6749_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6749
 HV6749  HISTORY     - Date     Condition        Report By
 HV6749  HISTORY     - 1897     MONUMENTED       CGS
 HV6749  HISTORY     - 1908     SEE DESCRIPTION  CGS
 HV6749  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6749
 HV6749                          STATION DESCRIPTION
 HV6749
 HV6749'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV6749'ON THE WESTERN SHORE OF CHESAPEAKE BAY, 3-1/4 MILES NNW OF POINT
 HV6749'OF ROCKS AND ABOUT 3-1/2 MILES SE OF GOVERNORS RUN, ON SAND AND
 HV6749'GRASS LAND BETWEEN BAY SHORE AND SWAMP, 5 FEET ABOVE HIGH WATER
 HV6749'35 YARDS S OF SHORE, 20 YARDS NW OF SHORE, 9 YARDS NW OF CEDARS,
 HV6749'10 YARDS W OF CEDARS AND BUSHES, 25 YARDS W OF SHORE, AND 10
 HV6749'YARDS NE OF A SWAMP.  THE STATION WAS ORIGINALLY MARKED BY A
 HV6749'CONCRETE POST 6 INCHES SQUARE AND 3 FEET LONG, WITH GALVANIZED
 HV6749'IRON ROD THROUGHOUT ITS LENGTH.  ABOVE THIS IS A SPIKE IN
 HV6749'CEMENT IN A STOVEPIPE 4 INCHES IN DIAMETER AND 1 FOOT LONG.
 HV6749'THE REFERENCE STATION IS MARKED BY A HOLE IN THE CENTER OF
 HV6749'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6749'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV6749'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6749'COUNTER-SUNK IN TOP OF POST.  IT IS 9.02 METERS (29.59 FEET)
 HV6749'FROM THE STATION IN AZIMUTH 92 DEG 26 MIN.  DISTANCES AND
 HV6749'AZIMUTHS TO OTHER REFERENCE MARKS ARE AS FOLLOWS--SPIKE IN
 HV6749'BLAZE IN CEDAR TREE, 14.88 METERS (48.8 FEET), 89 DEG 40 MIN.
 HV6749'SPIKE IN BLAZE IN CEDAR TREE, 18.48 METERS (60.6 FEET), 120 DEG
 HV6749'30 MIN.  SPIKE IN BLAZE IN CEDAR TREE, 8.80 METERS (28.9 FEET),
 HV6749'227 DEG 47 MIN.  SPIKE IN BLAZE, 13.56 METERS, 318 DEG 03
 HV6749'MIN.
 HV6749
 HV6749                          STATION RECOVERY (1942)
 HV6749
 HV6749'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6749'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED FOR
 HV6749'BY TWO MEN FOR ONE HOUR BUT NO TRACE OF THEM COULD BE FOUND.  IT
 HV6749'IS RECOMMENDED THAT THIS STATION BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6389 ***********************************************************************
 JV6389  DESIGNATION -  FLAGPOLE
 JV6389  PID         -  JV6389
 JV6389  STATE/COUNTY-  MD/MONTGOMERY
 JV6389  COUNTRY     -  US
 JV6389  USGS QUAD   -  GAITHERSBURG (2016)
 JV6389
 JV6389                         *CURRENT SURVEY CONTROL
 JV6389  ______________________________________________________________________
 JV6389* NAD 83(1986) POSITION- 39 08 09.59   (N) 077 12 53.04   (W)   HD_HELD1
 JV6389* NAVD 88 ORTHO HEIGHT -   140.648 (meters)      461.44  (feet) ADJUSTED
 JV6389  ______________________________________________________________________
 JV6389  GEOID HEIGHT    -        -31.743 (meters)                     GEOID18
 JV6389  DYNAMIC HEIGHT  -        140.574 (meters)      461.20  (feet) COMP
 JV6389  MODELED GRAVITY -    980,100.9   (mgal)                       NAVD 88
 JV6389
 JV6389  VERT ORDER      -  FIRST     CLASS 0
 JV6389
 JV6389.The horizontal coordinates were determined by differentially corrected
 JV6389.hand held GPS observations or other comparable positioning techniques
 JV6389.and have an estimated accuracy of +/- 3 meters.
 JV6389
 JV6389.The orthometric height was determined by differential leveling and
 JV6389.adjusted by the NATIONAL GEODETIC SURVEY
 JV6389.in July 1994.
 JV6389
 JV6389.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6389.GEOID18 height accuracy estimate available here.
 JV6389
 JV6389.Click photographs - Photos may exist for this station.
 JV6389
 JV6389.The dynamic height is computed by dividing the NAVD 88
 JV6389.geopotential number by the normal gravity value computed on the
 JV6389.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6389.degrees latitude (g = 980.6199 gals.).
 JV6389
 JV6389.The modeled gravity was interpolated from observed gravity values.
 JV6389
 JV6389;                    North         East    Units  Estimated Accuracy
 JV6389;SPC MD       -   163,125.3     381,434.8     MT  (+/- 3 meters HH1 GPS) 
 JV6389
 JV6389_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0858034204(NAD 83)
 JV6389
 JV6389                          SUPERSEDED SURVEY CONTROL
 JV6389
 JV6389  NGVD 29 (??/??/92)  140.85   (m)          462.1    (f) COMPUTED    1 0
 JV6389
 JV6389.Superseded values are not recommended for survey control.
 JV6389
 JV6389.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6389.See file dsdata.pdf to determine how the superseded data were derived.
 JV6389
 JV6389_MARKER: Z = SEE DESCRIPTION
 JV6389_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV6389_SP_SET: FLAGPOLE BASE
 JV6389_MARK LOGO: NONE
 JV6389_PROJECTION: FLUSH
 JV6389_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6389_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6389+STABILITY: SURFACE MOTION
 JV6389_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6389+SATELLITE: SATELLITE OBSERVATIONS - September 12, 1997
 JV6389
 JV6389  HISTORY     - Date     Condition        Report By
 JV6389  HISTORY     - 1964     MONUMENTED       NBS
 JV6389  HISTORY     - 19731101 GOOD             NGS
 JV6389  HISTORY     - 19891018 GOOD             NGS
 JV6389  HISTORY     - 19911015 GOOD             NGS
 JV6389  HISTORY     - 19950905 GOOD             USPSQD
 JV6389  HISTORY     - 19970912 GOOD             NGS
 JV6389
 JV6389                          STATION DESCRIPTION
 JV6389
 JV6389'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973
 JV6389'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6389'TECHNOLOGY GROUNDS, ON THE EAST SIDE OF THE ADMINISTRATION BUILDING,
 JV6389'AT A LARGE FLAGPOLE, A 3/8-INCH STEEL BALL IN THE DOT OF THE LETTER I
 JV6389'OF THE WORD WASHINGTON ENGRAVED IN THE TOP ONE OF TWO GRANITE ROUND
 JV6389'BASES FOR THE FLAGPOLE, 6.0 M (19.68 FT) SOUTH OF THE SOUTH EDGE OF
 JV6389'AN EAST-WEST SIDEWALK LEADING TO THE ADMINISTRATION BUILDING, 1.9 M
 JV6389'(6.23 FT) NORTH OF THE CENTER OF THE FLAGPOLE, AND 0.3 M (0.98 FT)
 JV6389'ABOVE THE GROUND.
 JV6389
 JV6389                          STATION RECOVERY (1989)
 JV6389
 JV6389'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV6389'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6389'TECHNOLOGY GROUNDS, ON THE EAST SIDE OF THE ADMINISTRATION BUILDING,
 JV6389'AT A LARGE FLAGPOLE, A 5/8-INCH STEEL BALL IN THE DOT OF THE LETTER I
 JV6389'OF THE WORD WASHINGTON ENGRAVED IN THE TOP ONE OF TWO GRANITE ROUND
 JV6389'BASES FOR THE FLAGPOLE, 6.0 M (19.68 FT) SOUTH OF THE SOUTH EDGE OF
 JV6389'AN EAST-WEST SIDEWALK LEADING TO THE ADMINISTRATION BUILDING, 1.9 M
 JV6389'(6.23 FT) NORTH OF THE CENTER OF THE FLAGPOLE, AND 0.3 M (0.98 FT)
 JV6389'ABOVE THE GROUND.
 JV6389
 JV6389                          STATION RECOVERY (1991)
 JV6389
 JV6389'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV6389'RECOVERED IN GOOD CONDITION.
 JV6389
 JV6389                          STATION RECOVERY (1995)
 JV6389
 JV6389'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6389'RECOVERED IN GOOD CONDITION.
 JV6389
 JV6389                          STATION RECOVERY (1997)
 JV6389
 JV6389'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (RLA)
 JV6389'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3139 ***********************************************************************
 DS3139  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3139  DESIGNATION -  FLASHER 374
 DS3139  PID         -  DS3139
 DS3139  STATE/COUNTY-  MD/HARFORD
 DS3139  COUNTRY     -  US
 DS3139  USGS QUAD   -  ABERDEEN (2016)
 DS3139
 DS3139                         *CURRENT SURVEY CONTROL
 DS3139  ______________________________________________________________________
 DS3139* NAD 83(2011) POSITION- 39 31 28.69257(N) 076 08 16.93803(W)   ADJUSTED
 DS3139* NAD 83(2011) ELLIP HT-   -11.026 (meters)        (12/12/24)   ADJUSTED
 DS3139* NAD 83(2011) EPOCH   -  2010.00
 DS3139* NAVD 88 ORTHO HEIGHT -    22.07  (meters)       72.4   (feet) GPS OBS
 DS3139  ______________________________________________________________________
 DS3139  GEOID HEIGHT    -        -33.120 (meters)                     GEOID18
 DS3139  NAD 83(2011) X  -  1,180,298.005 (meters)                     COMP
 DS3139  NAD 83(2011) Y  - -4,782,977.714 (meters)                     COMP
 DS3139  NAD 83(2011) Z  -  4,037,406.761 (meters)                     COMP
 DS3139  LAPLACE CORR    -         -3.39  (seconds)                    DEFLEC18
 DS3139
 DS3139  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3139  Standards:
 DS3139         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3139            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3139  -------------------------------------------------------------------
 DS3139  NETWORK    0.85   1.29           0.37   0.32   0.66     -0.12353118
 DS3139  -------------------------------------------------------------------
 DS3139  Click here for local accuracies and other accuracy information.
 DS3139
 DS3139.The horizontal coordinates were established by GPS observations
 DS3139.and adjusted by the MD DEPT OF TRANSP in December 2024.
 DS3139
 DS3139.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3139.been affixed to the stable North American tectonic plate. See 
 DS3139.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3139
 DS3139.The horizontal coordinates are valid at the epoch date displayed above
 DS3139.which is a decimal equivalence of Year/Month/Day.
 DS3139
 DS3139.The orthometric height was determined by GPS observations and a
 DS3139.high-resolution geoid model using precise GPS observation and
 DS3139.processing techniques.
 DS3139
 DS3139.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3139.GEOID18 height accuracy estimate available here.
 DS3139
 DS3139.Click photographs - Photos may exist for this station.
 DS3139
 DS3139.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3139
 DS3139.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3139
 DS3139.The ellipsoidal height was determined by GPS observations
 DS3139.and is referenced to NAD 83.
 DS3139
 DS3139. The following values were computed from the NAD 83(2011) position.
 DS3139
 DS3139;                    North         East     Units Scale Factor Converg.
 DS3139;SPC MD       -   206,600.153   474,114.017   MT  1.00001391   +0 32 27.6
 DS3139;SPC MD       -   677,820.67  1,555,489.07   sFT  1.00001391   +0 32 27.6
 DS3139;UTM  18      - 4,375,616.988   402,185.902   MT  0.99971779   -0 43 27.5
 DS3139
 DS3139!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3139!SPC MD       -   1.00000173  x   1.00001391  =   1.00001564
 DS3139!UTM  18      -   1.00000173  x   0.99971779  =   0.99971952
 DS3139
 DS3139_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0218575616(NAD 83)
 DS3139
 DS3139                          SUPERSEDED SURVEY CONTROL
 DS3139
 DS3139.No superseded survey control is available for this station.
 DS3139
 DS3139_MARKER: DD = SURVEY DISK
 DS3139_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS3139_STAMPING: FLASHER 374
 DS3139_MARK LOGO: MD-025
 DS3139_PROJECTION: RECESSED 3 CENTIMETERS
 DS3139_MAGNETIC: N = NO MAGNETIC MATERIAL
 DS3139_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS3139_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3139+SATELLITE: SATELLITE OBSERVATIONS - December 11, 2023
 DS3139
 DS3139  HISTORY     - Date     Condition        Report By
 DS3139  HISTORY     - 19680315 MONUMENTED       MD-025
 DS3139  HISTORY     - 20231211 GOOD             MDSHA
 DS3139
 DS3139                          STATION DESCRIPTION
 DS3139
 DS3139'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DS3139'THE MARK IS LOCATED ABOUT 5.2 MI (8.4 KM) NORTHEAST OF PERRYMAN, 3.0
 DS3139'MI (4.8 KM) SOUTHWEST OF HAVRE DE GRACE AND 1.8 MI (2.8 KM) NORTHEAST
 DS3139'OF ABERDEEN.
 DS3139'
 DS3139'TO REACH THE MARK FROM THE INTERSECTION OF MD 22 AND US 40 ( PULASKI
 DS3139'HIGHWAY) PROCEED EAST ON US 40 FOR 2.02 KM (1.26 MI) TO THE MARK ON
 DS3139'THE LEFT. MARK IS JUST EAST OF THE INTERSECTION OF US 40 AND OAKINGTON
 DS3139'ROAD.
 DS3139'
 DS3139'THE MARK IS 67.6 FT (20.6 M) EAST OF OF THE EXTENDED CENTERLINE OF
 DS3139'OAKINGTON ROAD., 45.8 FT (14.0 M) SOUTH OF THE CENTERLINE OF US 40
 DS3139'WESTBOUND LANE, 41.8 FT (12.7 M) WEST-SOUTHWEST OF A GAS VALVE, 30.4
 DS3139'FT (9.3 M) SOUTHWEST OF A GAS VALVE, 22.6 FT (6.9 M) NORTH OF THE
 DS3139'CENTERLINE OF US 40 EASTBOUND LANE SET IN THE TOP OF A 4-IN (10 CM)
 DS3139'SQUARE CONCRETE POST AND ABOUT LEVEL WITH THE RAILROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5715 ***********************************************************************
 HV5715  DESIGNATION -  FLAT
 HV5715  PID         -  HV5715
 HV5715  STATE/COUNTY-  MD/QUEEN ANNES
 HV5715  COUNTRY     -  US
 HV5715  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5715
 HV5715                         *CURRENT SURVEY CONTROL
 HV5715  ______________________________________________________________________
 HV5715* NAD 83(1991) POSITION- 38 52 06.83132(N) 076 10 38.39948(W)   ADJUSTED
 HV5715* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5715  ______________________________________________________________________
 HV5715  GEOID HEIGHT    -        -34.233 (meters)                     GEOID18
 HV5715  LAPLACE CORR    -         -4.46  (seconds)                    DEFLEC18
 HV5715  HORZ ORDER      -  THIRD
 HV5715
 HV5715.The horizontal coordinates were established by classical geodetic methods
 HV5715.and adjusted by the National Geodetic Survey in January 1992.
 HV5715
 HV5715.The orthometric height was scaled from a topographic map.
 HV5715
 HV5715.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5715.GEOID18 height accuracy estimate available here.
 HV5715
 HV5715.Click photographs - Photos may exist for this station.
 HV5715
 HV5715.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5715
 HV5715. The following values were computed from the NAD 83(1991) position.
 HV5715
 HV5715;                    North         East     Units Scale Factor Converg.
 HV5715;SPC MD       -   133,737.375   471,391.780   MT  0.99994986   +0 30 58.8
 HV5715;SPC MD       -   438,770.04  1,546,557.86   sFT  0.99994986   +0 30 58.8
 HV5715;UTM  18      - 4,302,849.754   397,862.767   MT  0.99972846   -0 44 20.0
 HV5715
 HV5715!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5715!SPC MD       -   1.00000541  x   0.99994986  =   0.99995527
 HV5715!UTM  18      -   1.00000541  x   0.99972846  =   0.99973386
 HV5715
 HV5715:                Primary Azimuth Mark                     Grid Az
 HV5715:SPC MD       -  ALBERT                                   083 59 33.7
 HV5715:UTM  18      -  ALBERT                                   085 14 52.5
 HV5715
 HV5715_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9786202849(NAD 83)
 HV5715
 HV5715|---------------------------------------------------------------------|
 HV5715| PID    Reference Object                     Distance      Geod. Az  |
 HV5715|                                                           dddmmss.s |
 HV5715| HV5742 ALBERT                              APPROX. 0.7 KM 0843032.5 |
 HV5715|---------------------------------------------------------------------|
 HV5715
 HV5715                          SUPERSEDED SURVEY CONTROL
 HV5715
 HV5715  NAD 83(1986)-  38 52 06.82680(N)    076 10 38.41267(W) AD(       ) 3
 HV5715  NAD 27      -  38 52 06.38800(N)    076 10 39.59600(W) AD(       ) 3
 HV5715  USSD        -  38 52 06.78100(N)    076 10 39.36900(W) AD(       ) 3
 HV5715
 HV5715.Superseded values are not recommended for survey control.
 HV5715
 HV5715.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5715.See file dsdata.pdf to determine how the superseded data were derived.
 HV5715
 HV5715_MARKER: Z = SEE DESCRIPTION
 HV5715_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5715_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5715+STABILITY: SURFACE MOTION
 HV5715
 HV5715  HISTORY     - Date     Condition        Report By
 HV5715  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5715  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5715
 HV5715                          STATION DESCRIPTION
 HV5715
 HV5715'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5715'STATION IS ON WYE ISLAND, ON THE NORTHERN SHORE OF THE BRANCH OF
 HV5715'WYE RIVER BOUNDING WYE ISLAND ON THE S, ON A MARSH POINT, ABOUT 1
 HV5715'MILE NE OF BRUFFS ISLAND AND 1/2 MILE NE OF BORDLEY POINT.
 HV5715'STATION IS ABOUT 1 FOOT ABOVE HIGH WATER, 8 YARDS N OF SHORE, 8
 HV5715'YARDS SW OF SHORE, 12 YARDS W OF EXTREME END OF POINT, 17 YARDS E
 HV5715'OF THE S END OF LINE OF SEVERAL TREES ON EDGE OF BANK 3 FEET HIGH,
 HV5715'AND 45 YARDS E OF A BLACK GUM TREE 5 FEET IN DIAMETER AT GROUND.
 HV5715'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5715'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5715'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5715'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 HV5715'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 HV5715'INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV5715'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--SPINDLE ON BARN CUPOLA
 HV5715'1-5/8 MILES, S 24 DEG 5 MIN W.  FRONT PEAK OF BOATHOUSE, 1 MILE,
 HV5715'S 38 DEG 33 MIN W.  LEFT TANGENT OF BLACK GUM TREE, 44 YARDS S 62
 HV5715'DEG 38 MIN W. NEAR PEAK OF HOUSE, 3/4 MILE, N 25 DEG 55 MIN W.
 HV5715'SPINDLE ON CUPOLA, 3/4 MILE, N 75 DEG 42 MIN E.  WINDMILL, 3/4
 HV5715'MILE, N 76 DEG 46 MIN E.  NEAR PEAK OF BALDWIN HOUSE, 3/4 MILE, N
 HV5715'79 DEG 21 MIN E.  LEFT CORNER OF TOWER OF HOUSE, 1-1/4 MILES, S 64
 HV5715'DEG 56 MIN E.  WINDMILL, 1-1/8 MILES, S 32 DEG 33 MIN E.
 HV5715
 HV5715                          STATION RECOVERY (1940)
 HV5715
 HV5715'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5715'STATION MARK SEARCHED FOR BUT NOT FOUND.  NONE OF REFERENCE TREES
 HV5715'COULD BE FOUND.  DISTANT REFERENCES NOT CHECKED.  POINT ON WHICH
 HV5715'MARK WAS LOCATED IS COVERED AT HIGH WATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6569 ***********************************************************************
 HV6569  DESIGNATION -  FLAT
 HV6569  PID         -  HV6569
 HV6569  STATE/COUNTY-  MD/ST MARYS
 HV6569  COUNTRY     -  US
 HV6569  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6569
 HV6569                         *CURRENT SURVEY CONTROL
 HV6569  ______________________________________________________________________
 HV6569* NAD 83(1993) POSITION- 38 07 31.22431(N) 076 24 50.23592(W)   ADJUSTED
 HV6569* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6569  ______________________________________________________________________
 HV6569  GEOID HEIGHT    -        -34.914 (meters)                     GEOID18
 HV6569  LAPLACE CORR    -         -6.04  (seconds)                    DEFLEC18
 HV6569  HORZ ORDER      -  THIRD
 HV6569
 HV6569.The horizontal coordinates were established by classical geodetic methods
 HV6569.and adjusted by the National Geodetic Survey in November 1994.
 HV6569
 HV6569.The orthometric height was scaled from a topographic map.
 HV6569
 HV6569.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6569.GEOID18 height accuracy estimate available here.
 HV6569
 HV6569.Click photographs - Photos may exist for this station.
 HV6569
 HV6569.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6569
 HV6569. The following values were computed from the NAD 83(1993) position.
 HV6569
 HV6569;                    North         East     Units Scale Factor Converg.
 HV6569;SPC MD       -    51,080.139   451,387.537   MT  1.00003497   +0 22 04.2
 HV6569;SPC MD       -   167,585.42  1,480,927.28   sFT  1.00003497   +0 22 04.2
 HV6569;SPC VA N     - 2,052,989.768 3,682,891.753   MT  0.99998504   +1 18 07.0
 HV6569;SPC VA N     - 6,735,517.26 12,082,954.03   sFT  0.99998504   +1 18 07.0
 HV6569;SPC VA S     - 1,200,899.095 3,682,901.346   MT  1.00003281   +1 15 57.9
 HV6569;SPC VA S     - 3,939,949.78 12,082,985.50   sFT  1.00003281   +1 15 57.9
 HV6569;UTM  18      - 4,220,666.134   376,067.147   MT  0.99978916   -0 52 23.0
 HV6569
 HV6569!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6569!SPC MD       -   1.00000537  x   1.00003497  =   1.00004034
 HV6569!SPC VA N     -   1.00000537  x   0.99998504  =   0.99999041
 HV6569!SPC VA S     -   1.00000537  x   1.00003281  =   1.00003818
 HV6569!UTM  18      -   1.00000537  x   0.99978916  =   0.99979453
 HV6569
 HV6569:                Primary Azimuth Mark                     Grid Az
 HV6569:SPC MD       -  JUTLAND                                  129 02 20.2
 HV6569:SPC VA N     -  JUTLAND                                  128 06 17.4
 HV6569:SPC VA S     -  JUTLAND                                  128 08 26.5
 HV6569:UTM  18      -  JUTLAND                                  130 16 47.4
 HV6569
 HV6569_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7606720666(NAD 83)
 HV6569
 HV6569|---------------------------------------------------------------------|
 HV6569| PID    Reference Object                     Distance      Geod. Az  |
 HV6569|                                                           dddmmss.s |
 HV6569| HV6577 RAN 2                               255.878 METERS 02744     |
 HV6569| HV6578 FLAGPOLE                            334.796 METERS 08021     |
 HV6569| HV6543 JUTLAND                             473.021 METERS 1292424.4 |
 HV6569| HV6540 STUNG MSFC 1908                     490.729 METERS 1672738.3 |
 HV6569| CX2768 FLAT RM                              10.410 METERS 24500     |
 HV6569|---------------------------------------------------------------------|
 HV6569
 HV6569                          SUPERSEDED SURVEY CONTROL
 HV6569
 HV6569  NAD 83(1991)-  38 07 31.22325(N)    076 24 50.23883(W) AD(       ) 3
 HV6569  NAD 83(1986)-  38 07 31.22446(N)    076 24 50.25258(W) AD(       ) 3
 HV6569  NAD 27      -  38 07 30.81500(N)    076 24 51.45400(W) AD(       ) 3
 HV6569  USSD        -  38 07 31.19400(N)    076 24 51.16500(W) AD(       ) 3
 HV6569
 HV6569.Superseded values are not recommended for survey control.
 HV6569
 HV6569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6569.See file dsdata.pdf to determine how the superseded data were derived.
 HV6569
 HV6569_MARKER: N = NAIL
 HV6569_SETTING: 0 = UNSPECIFIED SETTING
 HV6569
 HV6569  HISTORY     - Date     Condition        Report By
 HV6569  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6569  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6569  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6569
 HV6569                          STATION DESCRIPTION
 HV6569
 HV6569'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6569'STATION IS ON THE EASTERN SHORE OF ST. MARYS RIVER, ON FORT POINT,
 HV6569'ABOUT 2-1/4 MILES N OF ENTRANCE TO RIVER, AND 7/8 MILE S OF PRIESTS
 HV6569'POINT.  STATION IS IN CULTIVATED FIELD ABOUT 15 FEET ABOVE HIGH
 HV6569'WATER, 16 YARDS E OF EDGE OF BANK, 70 YARDS W BY S OF A HOUSE, AND
 HV6569'34 YARDS SSW OF A CORNER OF A FENCE.
 HV6569'
 HV6569'STATION MARK IS NAIL IN STUB WITH TOP FLUSH WITH SURFACE OF GROUND.
 HV6569'
 HV6569'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6569'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6569'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6569'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6569'32.17 METERS (105.5 FEET) FROM STATION N 22 DEG 20
 HV6569'MIN E  .  DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE
 HV6569'ARE AS FOLLOWS--CHIMNEY OF 2 1/2-STORY HOUSE WITH ELL, 2-1/8
 HV6569'MILES, S 56 DEG 14 MIN W.  CANNING-HOUSE STACK, 2-1/2 MILES, N 56 DEG
 HV6569'13 MIN W.  NEAR PEAK OF ROOF OF STABLE, 2-1/8 MILES, N 27 DEG 52
 HV6569'MIN W.  NEAR CHIMNEY OF TAYLORS HOUSE, 70 YARDS, N 68 DEG 28 MIN E.
 HV6569'CHIMNEY OF SMALL BUILDING, 250 YARDS, S 83 DEG 38 MIN E.
 HV6569
 HV6569                          STATION RECOVERY (1942)
 HV6569
 HV6569'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6569'THIS STATION HAS BEEN DESTROYED BUT THE CONCRETE REFERENCE MARK IS
 HV6569'STILL IN PLACE.
 HV6569'
 HV6569'THE REFERENCE MARK IS LOCATED ON THE EASTERN SHORE OF ST. MARYS
 HV6569'RIVER ABOUT 4.0 MILES FROM ST. INIGOES POST OFFICE ON FORT POINT AND
 HV6569'ON THE PROPERTY OF ARTHUR COMBS, 65 FEET FROM THE TOP OF A 10-FOOT
 HV6569'BANK, 17 FEET W OF A LONE 24-INCH APPLE TREE, 66 FEET S OF THE N
 HV6569'GARDEN FENCE, 5 FEET N OF THE S GARDEN FENCE, ABOUT 115 FEET W OF
 HV6569'THE SW CORNER OF WING OF A HOUSE AND IN THE UNCULTIVATED PORTION
 HV6569'OF THE GARDEN ABOUT 15 FEET ABOVE HIGH WATER.
 HV6569'
 HV6569'THE REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6569'SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH SQUARE
 HV6569'CONCRETE MONUMENT, WHICH PROJECTS ABOUT 4 INCHES ABOVE THE SURFACE
 HV6569'OF THE GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK
 HV6569'IN THE TOP OF THE MONUMENT.  THE REFERENCE MARK IS IN GOOD
 HV6569'CONDITION.
 HV6569
 HV6569                          STATION RECOVERY (1958)
 HV6569
 HV6569'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6569'THE STATION WAS NOT RECOVERED DUE TO THE LOSS OF ALL LOCAL
 HV6569'REFERENCES AND THE CHARACTER OF THE MARK.  THE REFERENCE MARK, A
 HV6569'MARYLAND SHELL FISHERIES COMMISSIONS MONUMENT, WAS FOUND LYING ON
 HV6569'ITS SIDE IN THE WATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1884 ***********************************************************************
 HU1884  DESIGNATION -  FLAT CAP
 HU1884  PID         -  HU1884
 HU1884  STATE/COUNTY-  MD/SOMERSET
 HU1884  COUNTRY     -  US
 HU1884  USGS QUAD   -  MARION (2016)
 HU1884
 HU1884                         *CURRENT SURVEY CONTROL
 HU1884  ______________________________________________________________________
 HU1884* NAD 83(1993) POSITION- 38 01 51.80440(N) 075 52 30.27090(W)   ADJUSTED
 HU1884* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1884  ______________________________________________________________________
 HU1884  GEOID HEIGHT    -        -36.011 (meters)                     GEOID18
 HU1884  LAPLACE CORR    -         -1.47  (seconds)                    DEFLEC18
 HU1884  HORZ ORDER      -  THIRD
 HU1884
 HU1884.The horizontal coordinates were established by classical geodetic methods
 HU1884.and adjusted by the National Geodetic Survey in November 1994.
 HU1884
 HU1884.The orthometric height was scaled from a topographic map.
 HU1884
 HU1884.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1884.GEOID18 height accuracy estimate available here.
 HU1884
 HU1884.Click photographs - Photos may exist for this station.
 HU1884
 HU1884.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1884
 HU1884. The following values were computed from the NAD 83(1993) position.
 HU1884
 HU1884;                    North         East     Units Scale Factor Converg.
 HU1884;SPC MD       -    41,057.999   498,766.421   MT  1.00005766   +0 42 21.7
 HU1884;SPC MD       -   134,704.45  1,636,369.50   sFT  1.00005766   +0 42 21.7
 HU1884;SPC VA S     - 1,191,616.524 3,730,429.496   MT  1.00001239   +1 35 35.3
 HU1884;SPC VA S     - 3,909,495.21 12,238,917.44   sFT  1.00001239   +1 35 35.3
 HU1884;UTM  18      - 4,209,622.172   423,202.417   MT  0.99967264   -0 32 20.9
 HU1884
 HU1884!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1884!SPC MD       -   1.00000569  x   1.00005766  =   1.00006335
 HU1884!SPC VA S     -   1.00000569  x   1.00001239  =   1.00001808
 HU1884!UTM  18      -   1.00000569  x   0.99967264  =   0.99967833
 HU1884
 HU1884:                Primary Azimuth Mark                     Grid Az
 HU1884:SPC MD       -  SOLOMONS LUMP LIGHTHOUSE                 278 03 40.1
 HU1884:SPC VA S     -  SOLOMONS LUMP LIGHTHOUSE                 277 10 26.5
 HU1884:UTM  18      -  SOLOMONS LUMP LIGHTHOUSE                 279 18 22.7
 HU1884
 HU1884_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2320209622(NAD 83)
 HU1884
 HU1884|---------------------------------------------------------------------|
 HU1884| PID    Reference Object                     Distance      Geod. Az  |
 HU1884|                                                           dddmmss.s |
 HU1884| DC7306 FLAT CAP RM                          13.640 METERS 09809     |
 HU1884| HV6492 SOLOMONS LUMP LIGHTHOUSE            APPROX.12.4 KM 2784601.8 |
 HU1884| HU1890 DEAL ISLAND CHURCH SPIRE            APPROX.15.2 KM 3345831.6 |
 HU1884|---------------------------------------------------------------------|
 HU1884
 HU1884                          SUPERSEDED SURVEY CONTROL
 HU1884
 HU1884  NAD 83(1991)-  38 01 51.80295(N)    075 52 30.27535(W) AD(       ) 3
 HU1884  NAD 83(1986)-  38 01 51.80310(N)    075 52 30.29373(W) AD(       ) 3
 HU1884  NAD 27      -  38 01 51.36100(N)    075 52 31.54100(W) AD(       ) 3
 HU1884  USSD        -  38 01 51.66000(N)    075 52 31.29000(W) AD(       ) 3
 HU1884
 HU1884.Superseded values are not recommended for survey control.
 HU1884
 HU1884.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1884.See file dsdata.pdf to determine how the superseded data were derived.
 HU1884
 HU1884
 HU1884  HISTORY     - Date     Condition        Report By
 HU1884  HISTORY     - 1901     MONUMENTED       MDSFC
 HU1884  HISTORY     - 1907     SEE DESCRIPTION  CGS
 HU1884  HISTORY     - 1960     MARK NOT FOUND   CGS
 HU1884
 HU1884                          STATION DESCRIPTION
 HU1884
 HU1884'DESCRIBED BY COAST AND GEODETIC SURVEY 1907
 HU1884'STATION IS ON THE EASTERN SHORE OF TANGIER SOUND, ABOUT 1/2 MILE
 HU1884'S OF FLAT CAP POINT ON THE S SIDE OF ENTRANCE TO BIG ANNEMESSEX
 HU1884'RIVER.  IT IS ON A SAND DUNE, ABOUT 10 YARDS BACK FROM AND 10 FEET
 HU1884'ABOVE HIGH-WATER MARK.  A SANDY BEACH EXTENDS ALONG THE SHORE
 HU1884'FOR ABOUT 100 YARDS IN BOTH DIRECTIONS, AND THE REMAINDER OF THE
 HU1884'LAND IS GRASSY.  A SLOUGH BEGINS AT A POINT ABOUT 50 YARDS SE OF
 HU1884'THE STATION AND EXTENDS S.  STATION MARK IS A 1 1/2-INCH IRON
 HU1884'PIPE 5 FEET LONG, DRIVEN INTO THE SAND, ITS TOP FLUSH WITH THE
 HU1884'SURFACE OF THE GROUND.  THE REFERENCE MARK IS A HOLE IN THE
 HU1884'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HU1884'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH
 HU1884'TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HU1884'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 13.64 METERS
 HU1884'(44.8 FEET) FROM THE STATION, S 81 DEG 51 MIN E.  OTHER
 HU1884'DISTANCES AND BEARINGS ARE AS FOLLOWS--FISH FACTORY STACK
 HU1884'ON JANES ISLAND, 4-1/4 MILES, S 10 DEG 22 MIN W.  LEFT END OF ROOF OF
 HU1884'WHITE HOUSE NEAR PRICKLY POINT, 2-1/2 MILES, N 09 DEG 07 MIN E.
 HU1884'RIGHT END OF LONG BUILDING IN WOODS, 2-1/2 MILES, N 87
 HU1884'DEG 55 MIN E.  TOWER OF ODD FELLOWS BUILDING, CRISFIELD, 3-1/2
 HU1884'MILES, S 18 DEG 08 MIN E.  LONE SMOKESTACK ON CRISFIELD ICE
 HU1884'PLANT, 3-3/4 MILES, S 09 DEG 43 MIN E.
 HU1884
 HU1884                          STATION RECOVERY (1960)
 HU1884
 HU1884'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (RST)
 HU1884'STATION WAS NOT RECOVERED IN 1949 AND NO TRACE OF IT WAS FOUND
 HU1884'AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9404 ***********************************************************************
 DR9404  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9404  DESIGNATION -  FLATLAND
 DR9404  PID         -  DR9404
 DR9404  STATE/COUNTY-  MD/KENT
 DR9404  COUNTRY     -  US
 DR9404  USGS QUAD   -  CHESTERTOWN (2017)
 DR9404
 DR9404                         *CURRENT SURVEY CONTROL
 DR9404  ______________________________________________________________________
 DR9404* NAD 83(2011) POSITION- 39 14 49.06389(N) 076 06 43.88800(W)   ADJUSTED
 DR9404* NAD 83(2011) ELLIP HT-    -9.696 (meters)        (09/18/23)   ADJUSTED
 DR9404* NAD 83(2011) EPOCH   -  2010.00
 DR9404* NAVD 88 ORTHO HEIGHT -    23.64  (meters)       77.6   (feet) GPS OBS
 DR9404  ______________________________________________________________________
 DR9404  GEOID HEIGHT    -        -33.345 (meters)                     GEOID18
 DR9404  NAD 83(2011) X  -  1,187,151.045 (meters)                     COMP
 DR9404  NAD 83(2011) Y  - -4,801,435.598 (meters)                     COMP
 DR9404  NAD 83(2011) Z  -  4,013,580.810 (meters)                     COMP
 DR9404  LAPLACE CORR    -         -2.26  (seconds)                    DEFLEC18
 DR9404
 DR9404  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9404  Standards:
 DR9404         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9404            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9404  -------------------------------------------------------------------
 DR9404  NETWORK    0.58   1.41           0.26   0.21   0.72     -0.06265655
 DR9404  -------------------------------------------------------------------
 DR9404  Click here for local accuracies and other accuracy information.
 DR9404
 DR9404.The horizontal coordinates were established by GPS observations
 DR9404.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9404
 DR9404.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9404.been affixed to the stable North American tectonic plate. See 
 DR9404.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9404
 DR9404.The horizontal coordinates are valid at the epoch date displayed above
 DR9404.which is a decimal equivalence of Year/Month/Day.
 DR9404
 DR9404.The orthometric height was determined by GPS observations and a
 DR9404.high-resolution geoid model using precise GPS observation and
 DR9404.processing techniques.
 DR9404
 DR9404.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9404.GEOID18 height accuracy estimate available here.
 DR9404
 DR9404.Click photographs - Photos may exist for this station.
 DR9404
 DR9404.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9404
 DR9404.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9404
 DR9404.The ellipsoidal height was determined by GPS observations
 DR9404.and is referenced to NAD 83.
 DR9404
 DR9404. The following values were computed from the NAD 83(2011) position.
 DR9404
 DR9404;                    North         East     Units Scale Factor Converg.
 DR9404;SPC MD       -   175,794.977   476,636.176   MT  0.99997078   +0 33 26.0
 DR9404;SPC MD       -   576,754.02  1,563,763.85   sFT  0.99997078   +0 33 26.0
 DR9404;UTM  18      - 4,344,772.178   404,027.889   MT  0.99971341   -0 42 13.3
 DR9404
 DR9404!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9404!SPC MD       -   1.00000152  x   0.99997078  =   0.99997230
 DR9404!UTM  18      -   1.00000152  x   0.99971341  =   0.99971493
 DR9404
 DR9404_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0402744772(NAD 83)
 DR9404
 DR9404                          SUPERSEDED SURVEY CONTROL
 DR9404
 DR9404.No superseded survey control is available for this station.
 DR9404
 DR9404_MARKER: DD = SURVEY DISK
 DR9404_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9404_STAMPING: FLATLAND 2021
 DR9404_MARK LOGO: MDSHA
 DR9404_PROJECTION: FLUSH
 DR9404_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9404_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9404+STABILITY: SURFACE MOTION
 DR9404_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9404+SATELLITE: SATELLITE OBSERVATIONS - December 16, 2021
 DR9404
 DR9404  HISTORY     - Date     Condition        Report By
 DR9404  HISTORY     - 20211216 MONUMENTED       MDSHA
 DR9404  HISTORY     - 20250731 GOOD             PROFLN
 DR9404
 DR9404                          STATION DESCRIPTION
 DR9404
 DR9404'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9404'THE MARK IS LOCATED ABOUT 3.6 MI (5.8 KM) NORTHWEST OF CHESTERTOWN, IN
 DR9404'THE TOWN OF, MD, 2.4 MI (3.9 KM) SOUTH-SOUTHEAST OF HANESVILLE AND 2.2
 DR9404'MI (3.5 KM) SOUTH-SOUTHWEST OF WORTON.
 DR9404'
 DR9404'TO REACH THE MARK FROM THE JUNCTION OF MD 298 AND MD 297, GO
 DR9404'SOUTH-SOUTHEAST ON MD 297 FOR 0.71 MI (1.14 KM) TO AN INTERSECTION.
 DR9404'TURN RIGHT AND GO SOUTHWEST ON PORTERS GROVE ROAD FOR 2.10 MI (3.38
 DR9404'KM) TO AN INTERSECTION.  TURN LEFT AND GO SOUTH-SOUTHEAST ON MD 514 S
 DR9404'FOR 0.95 MI (1.53 KM) TO THE MARK ON THE RIGHT.   THE MARK IS 120.5 FT
 DR9404'(36.7 M) NORTHWEST OF A UTILITY POLE NUMBERED CHOPTANK 122-159-59,
 DR9404'76.2 FT (23.2 M) WEST-NORTHWEST OF THE CENTERLINE OF A PAVED DRIVEWAY
 DR9404'FOR 9803 FLATLAND ROAD, 28.2 FT (8.6 M) SOUTHWEST OF THE CENTERLINE OF
 DR9404'STATE ROUTE MD 514, 6.6 FT (2.0 M) SOUTHEAST OF A TELEPHONE BOX
 DR9404'NUMBERED 66 SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND
 DR9404'ABOUT LEVEL WITH THE ROAD.
 DR9404
 DR9404                          STATION RECOVERY (2025)
 DR9404
 DR9404'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9404'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9405 ***********************************************************************
 DR9405  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9405  DESIGNATION -  FLATLAND AZ MK
 DR9405  PID         -  DR9405
 DR9405  STATE/COUNTY-  MD/KENT
 DR9405  COUNTRY     -  US
 DR9405  USGS QUAD   -  CHESTERTOWN (2017)
 DR9405
 DR9405                         *CURRENT SURVEY CONTROL
 DR9405  ______________________________________________________________________
 DR9405* NAD 83(2011) POSITION- 39 14 54.80630(N) 076 06 50.89848(W)   ADJUSTED
 DR9405* NAD 83(2011) ELLIP HT-    -8.880 (meters)        (09/18/23)   ADJUSTED
 DR9405* NAD 83(2011) EPOCH   -  2010.00
 DR9405* NAVD 88 ORTHO HEIGHT -    24.45  (meters)       80.2   (feet) GPS OBS
 DR9405  ______________________________________________________________________
 DR9405  GEOID HEIGHT    -        -33.341 (meters)                     GEOID18
 DR9405  NAD 83(2011) X  -  1,186,961.117 (meters)                     COMP
 DR9405  NAD 83(2011) Y  - -4,801,367.792 (meters)                     COMP
 DR9405  NAD 83(2011) Z  -  4,013,718.467 (meters)                     COMP
 DR9405  LAPLACE CORR    -         -2.22  (seconds)                    DEFLEC18
 DR9405
 DR9405  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9405  Standards:
 DR9405         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9405            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9405  -------------------------------------------------------------------
 DR9405  NETWORK    0.57   1.37           0.25   0.21   0.70     -0.06857267
 DR9405  -------------------------------------------------------------------
 DR9405  Click here for local accuracies and other accuracy information.
 DR9405
 DR9405.The horizontal coordinates were established by GPS observations
 DR9405.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9405
 DR9405.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9405.been affixed to the stable North American tectonic plate. See 
 DR9405.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9405
 DR9405.The horizontal coordinates are valid at the epoch date displayed above
 DR9405.which is a decimal equivalence of Year/Month/Day.
 DR9405
 DR9405.The orthometric height was determined by GPS observations and a
 DR9405.high-resolution geoid model using precise GPS observation and
 DR9405.processing techniques.
 DR9405
 DR9405.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9405.GEOID18 height accuracy estimate available here.
 DR9405
 DR9405.Click photographs - Photos may exist for this station.
 DR9405
 DR9405.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9405
 DR9405.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9405
 DR9405.The ellipsoidal height was determined by GPS observations
 DR9405.and is referenced to NAD 83.
 DR9405
 DR9405. The following values were computed from the NAD 83(2011) position.
 DR9405
 DR9405;                    North         East     Units Scale Factor Converg.
 DR9405;SPC MD       -   175,970.420   476,466.366   MT  0.99997096   +0 33 21.6
 DR9405;SPC MD       -   577,329.62  1,563,206.74   sFT  0.99997096   +0 33 21.6
 DR9405;UTM  18      - 4,344,951.269   403,862.024   MT  0.99971380   -0 42 17.8
 DR9405
 DR9405!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9405!SPC MD       -   1.00000139  x   0.99997096  =   0.99997235
 DR9405!UTM  18      -   1.00000139  x   0.99971380  =   0.99971519
 DR9405
 DR9405_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0386244951(NAD 83)
 DR9405
 DR9405                          SUPERSEDED SURVEY CONTROL
 DR9405
 DR9405.No superseded survey control is available for this station.
 DR9405
 DR9405_MARKER: DD = SURVEY DISK
 DR9405_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9405_STAMPING: FLATLAND AZ 2021
 DR9405_MARK LOGO: MD-029
 DR9405_PROJECTION: FLUSH
 DR9405_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9405_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9405+STABILITY: SURFACE MOTION
 DR9405_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9405+SATELLITE: SATELLITE OBSERVATIONS - December 16, 2021
 DR9405
 DR9405  HISTORY     - Date     Condition        Report By
 DR9405  HISTORY     - 20211216 MONUMENTED       MDSHA
 DR9405  HISTORY     - 20250731 GOOD             PROFLN
 DR9405
 DR9405                          STATION DESCRIPTION
 DR9405
 DR9405'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9405'THE MARK IS LOCATED ABOUT 3.7 MI (6.0 KM) NORTHWEST OF CHESTERTOWN,
 DR9405'3.6 MI (5.8 KM) EAST-NORTHEAST OF FAIRLEE, 2.2 MI (3.5 KM)
 DR9405'SOUTH-SOUTHEAST OF HANESVILLE AND 2.1 MI (3.4 KM) SOUTHWEST OF WORTON.
 DR9405'TO REACH THE MARK FROM THE JUNCTION OF MD 298 AND MD 297, GO
 DR9405'SOUTH-SOUTHEAST ON MD 297 FOR 0.71 MI (1.14 KM) TO AN INTERSECTION.
 DR9405'TURN RIGHT AND GO SOUTHWEST ON PORTERS GROVE ROAD FOR 2.10 MI (3.38
 DR9405'KM) TO AN INTERSECTION.  TURN LEFT AND GO SOUTH-SOUTHEAST ON MD 514 S
 DR9405'FOR 0.80 MI (1.29 KM) TO THE MARK ON THE RIGHT.
 DR9405'
 DR9405'THE MARK IS 24.5 FT (7.5 M) WEST-SOUTHWEST OF THE CENTERLINE OF STATE
 DR9405'ROUTE 514, 6.9 FT (2.1 M) EAST-NORTHEAST OF A TELEPHONE BOX NUMBERED
 DR9405'70.  IT IS 53.4 FT (16.3 M) NORTHWEST OF A UTILITY POLE NUMBERED 62,
 DR9405'24.5 FT (7.5 M) WEST-SOUTHWEST OF THE CENTERLINE OF STATE ROUTE 514,
 DR9405'14.6 FT (4.5 M) NORTH-NORTHWEST OF THE CENTERLINE OF A GRAVEL ENTRANCE
 DR9405'FOR 9905 FLATLAND ROAD, 6.9 FT (2.1 M) EAST-NORTHEAST OF A TELEPHONE
 DR9405'BOX NUMBERED 66 SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST
 DR9405'AND ABOUT LEVEL WITH THE ROAD.
 DR9405
 DR9405                          STATION RECOVERY (2025)
 DR9405
 DR9405'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9405'THE MARK IS DIRECTLY IN FRONT OF OR TOWARD THE HIGHWAY FROM TELEPHONE
 DR9405'BOX NUMBERED 70, NOT 66.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7155 ***********************************************************************
 HV7155  DESIGNATION -  FLEET HOUSE NORTH GABLE
 HV7155  PID         -  HV7155
 HV7155  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7155  COUNTRY     -  US
 HV7155  USGS QUAD   -  SOUTH RIVER (2016)
 HV7155
 HV7155                         *CURRENT SURVEY CONTROL
 HV7155  ______________________________________________________________________
 HV7155* NAD 83(1991) POSITION- 38 56 23.33229(N) 076 32 14.21338(W)   ADJUSTED
 HV7155  ______________________________________________________________________
 HV7155  GEOID HEIGHT    -        -33.304 (meters)                     GEOID18
 HV7155  LAPLACE CORR    -         -4.27  (seconds)                    DEFLEC18
 HV7155  HORZ ORDER      -  THIRD
 HV7155
 HV7155.The horizontal coordinates were established by classical geodetic methods
 HV7155.and adjusted by the National Geodetic Survey in January 1992.
 HV7155
 HV7155.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7155.GEOID18 height accuracy estimate available here.
 HV7155
 HV7155.Click photographs - Photos may exist for this station.
 HV7155
 HV7155.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7155
 HV7155. The following values were computed from the NAD 83(1991) position.
 HV7155
 HV7155;                    North         East     Units Scale Factor Converg.
 HV7155;SPC MD       -   141,426.717   440,115.417   MT  0.99995047   +0 17 25.5
 HV7155;SPC MD       -   463,997.49  1,443,945.33   sFT  0.99995047   +0 17 25.5
 HV7155;UTM  18      - 4,311,221.276   366,768.007   MT  0.99981858   -0 57 58.8
 HV7155
 HV7155_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6676811221(NAD 83)
 HV7155
 HV7155                          SUPERSEDED SURVEY CONTROL
 HV7155
 HV7155  NAD 83(1986)-  38 56 23.32883(N)    076 32 14.22451(W) AD(       ) 3
 HV7155  NAD 27      -  38 56 22.92000(N)    076 32 15.36000(W) AD(       ) 3
 HV7155
 HV7155.Superseded values are not recommended for survey control.
 HV7155
 HV7155.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7155.See file dsdata.pdf to determine how the superseded data were derived.
 HV7155
 HV7155_MARKER: 81 = GABLE
 HV7155
 HV7155  HISTORY     - Date     Condition        Report By
 HV7155  HISTORY     - 1933     FIRST OBSERVED   CGS
 HV7155
 HV7155                          STATION DESCRIPTION
 HV7155
 HV7155'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7155'LARGE PROMINENT GABLE IN CENTER OF ROOF OF N SIDE OF ONE-STORY
 HV7155'STUCCO HOUSE ON CREST OF TERRACED SLOPE BETWEEN GLEBE AND
 HV7155'ALMSHOUSE CREEKS AND S SHORE OF SOUTH RIVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4685 ***********************************************************************
 AB4685  DESIGNATION -  FLEMING
 AB4685  PID         -  AB4685
 AB4685  STATE/COUNTY-  MD/CARROLL
 AB4685  COUNTRY     -  US
 AB4685  USGS QUAD   -  WINFIELD (2016)
 AB4685
 AB4685                         *CURRENT SURVEY CONTROL
 AB4685  ______________________________________________________________________
 AB4685* NAD 83(2011) POSITION- 39 25 28.26076(N) 077 04 57.91795(W)   ADJUSTED
 AB4685* NAD 83(2011) ELLIP HT-   194.101 (meters)        (06/27/12)   ADJUSTED
 AB4685* NAD 83(2011) EPOCH   -  2010.00
 AB4685* NAVD 88 ORTHO HEIGHT -   226.0   (meters)      741.    (feet) GPS OBS
 AB4685  ______________________________________________________________________
 AB4685  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4685  GEOID HEIGHT    -        -31.975 (meters)                     GEOID99
 AB4685  GEOID HEIGHT    -        -31.971 (meters)                     GEOID18
 AB4685  NAD 83(2011) X  -  1,102,892.545 (meters)                     COMP
 AB4685  NAD 83(2011) Y  - -4,808,830.217 (meters)                     COMP
 AB4685  NAD 83(2011) Z  -  4,028,956.705 (meters)                     COMP
 AB4685  LAPLACE CORR    -          1.47  (seconds)                    DEFLEC18
 AB4685
 AB4685  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4685  Standards:
 AB4685         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4685            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4685  -------------------------------------------------------------------
 AB4685  NETWORK    1.97   3.94           0.83   0.78   2.01      0.00602416
 AB4685  -------------------------------------------------------------------
 AB4685  Click here for local accuracies and other accuracy information.
 AB4685
 AB4685.The horizontal coordinates were established by GPS observations
 AB4685.and adjusted by the National Geodetic Survey in June 2012.
 AB4685
 AB4685.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4685.been affixed to the stable North American tectonic plate. See 
 AB4685.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4685
 AB4685.The horizontal coordinates are valid at the epoch date displayed above
 AB4685.which is a decimal equivalence of Year/Month/Day.
 AB4685
 AB4685.The orthometric height was determined by GPS observations and a
 AB4685.high-resolution geoid model.
 AB4685
 AB4685.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4685.GEOID18 height accuracy estimate available here.
 AB4685
 AB4685.Click photographs - Photos may exist for this station.
 AB4685
 AB4685.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4685
 AB4685.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4685
 AB4685.The ellipsoidal height was determined by GPS observations
 AB4685.and is referenced to NAD 83.
 AB4685
 AB4685. The following values were computed from the NAD 83(2011) position.
 AB4685
 AB4685;                    North         East     Units Scale Factor Converg.
 AB4685;SPC MD       -   195,137.659   392,874.300   MT  0.99999564   -0 03 07.0
 AB4685;SPC MD       -   640,214.14  1,288,955.10   sFT  0.99999564   -0 03 07.0
 AB4685;UTM  18      - 4,365,957.183   320,725.516   MT  0.99999572   -1 19 22.9
 AB4685
 AB4685!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4685!SPC MD       -   0.99996955  x   0.99999564  =   0.99996519
 AB4685!UTM  18      -   0.99996955  x   0.99999572  =   0.99996527
 AB4685
 AB4685:                Primary Azimuth Mark                     Grid Az
 AB4685:SPC MD       -  FLEMING AZ MK                            318 25 01.9
 AB4685:UTM  18      -  FLEMING AZ MK                            319 41 17.8
 AB4685
 AB4685_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2072565957(NAD 83)
 AB4685
 AB4685|---------------------------------------------------------------------|
 AB4685| PID    Reference Object                     Distance      Geod. Az  |
 AB4685|                                                           dddmmss.s |
 AB4685| AB4711 FLEMING AZ MK                       APPROX. 0.6 KM 3182154.9 |
 AB4685|---------------------------------------------------------------------|
 AB4685
 AB4685                          SUPERSEDED SURVEY CONTROL
 AB4685
 AB4685  NAD 83(2007)-  39 25 28.26101(N)    077 04 57.91923(W) AD(2002.00) 0
 AB4685  ELLIP H (02/10/07)  194.125  (m)                       GP(2002.00)    
 AB4685  ELLIP H (08/30/02)  194.112  (m)                       GP(       ) 4 2
 AB4685  NAD 83(1991)-  39 25 28.26093(N)    077 04 57.91909(W) AD(       ) 1
 AB4685  ELLIP H (07/03/96)  194.014  (m)                       GP(       ) 1 1
 AB4685  NAVD 88 (07/03/96)  226.1    (m)  GEOID93  model used  GPS OBS        
 AB4685
 AB4685.Superseded values are not recommended for survey control.
 AB4685
 AB4685.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4685.See file dsdata.pdf to determine how the superseded data were derived.
 AB4685
 AB4685_MARKER: DD = SURVEY DISK
 AB4685_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4685_STAMPING: FLEMING
 AB4685_MARK LOGO: MD-013
 AB4685_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4685_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4685+STABILITY: SURFACE MOTION
 AB4685_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4685+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4685
 AB4685  HISTORY     - Date     Condition        Report By
 AB4685  HISTORY     - 1995     MONUMENTED       MD-013
 AB4685
 AB4685                          STATION DESCRIPTION
 AB4685
 AB4685'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4685'STAION IS LOCATED ABOUT 7.5 MI (12.1 KM) NORTHWEST OF SYKESVILLE AND
 AB4685'ABOUT 5 MI (8.0 KM) NORTHEAST OF MOUNT AIRY. TO REACH STATION FROM THE
 AB4685'INTERSECTION OF MD ROUTE 26 (LIBERTY ROAD) AND MD ROUTE 27 (RIDGE
 AB4685'ROAD) GO SOUTH ON MD ROUTE 27 FOR 1.6 MI (2.6 KM) TO THE INTERSECTION
 AB4685'WITH GILLIS ROAD. TURN LEFT ON GILLIS ROAD AND GO EAST FOR 1.5 MI (2.4
 AB4685'KM) TO THE INTERSECTION WITH FLEMING ROAD AND THE STATION ON THE
 AB4685'RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4685'MONUMENT SET FLUSH WITH THE GROUND. IT IS 55.6 FT (16.9 M) NORTHWEST
 AB4685'OF THE INTERSECTION OF THE ROADS, 5.2 FT (1.6 M) SOUTHEAST OF POWER
 AB4685'POLE NO.F31291 AND 49.0 FT (14.9 M) SOUTHWEST OF TELEPHONE POLE
 AB4685'NO.26.5.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4711 ***********************************************************************
 AB4711  DESIGNATION -  FLEMING AZ MK
 AB4711  PID         -  AB4711
 AB4711  STATE/COUNTY-  MD/CARROLL
 AB4711  COUNTRY     -  US
 AB4711  USGS QUAD   -  WINFIELD (2016)
 AB4711
 AB4711                         *CURRENT SURVEY CONTROL
 AB4711  ______________________________________________________________________
 AB4711* NAD 83(2011) POSITION- 39 25 43.95130(N) 077 05 15.90342(W)   ADJUSTED
 AB4711* NAD 83(2011) ELLIP HT-   203.297 (meters)        (06/27/12)   ADJUSTED
 AB4711* NAD 83(2011) EPOCH   -  2010.00
 AB4711* NAVD 88 ORTHO HEIGHT -   235.3   (meters)      772.    (feet) GPS OBS
 AB4711  ______________________________________________________________________
 AB4711  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4711  GEOID HEIGHT    -        -31.989 (meters)                     GEOID99
 AB4711  GEOID HEIGHT    -        -31.984 (meters)                     GEOID18
 AB4711  NAD 83(2011) X  -  1,102,406.143 (meters)                     COMP
 AB4711  NAD 83(2011) Y  - -4,808,633.735 (meters)                     COMP
 AB4711  NAD 83(2011) Z  -  4,029,336.336 (meters)                     COMP
 AB4711  LAPLACE CORR    -          1.66  (seconds)                    DEFLEC18
 AB4711
 AB4711  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4711  Standards:
 AB4711         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4711            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4711  -------------------------------------------------------------------
 AB4711  NETWORK    2.07   4.17           0.86   0.83   2.13     -0.00640749
 AB4711  -------------------------------------------------------------------
 AB4711  Click here for local accuracies and other accuracy information.
 AB4711
 AB4711.The horizontal coordinates were established by GPS observations
 AB4711.and adjusted by the National Geodetic Survey in June 2012.
 AB4711
 AB4711.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4711.been affixed to the stable North American tectonic plate. See 
 AB4711.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4711
 AB4711.The horizontal coordinates are valid at the epoch date displayed above
 AB4711.which is a decimal equivalence of Year/Month/Day.
 AB4711
 AB4711.The orthometric height was determined by GPS observations and a
 AB4711.high-resolution geoid model.
 AB4711
 AB4711.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4711.GEOID18 height accuracy estimate available here.
 AB4711
 AB4711.Click photographs - Photos may exist for this station.
 AB4711
 AB4711.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4711
 AB4711.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4711
 AB4711.The ellipsoidal height was determined by GPS observations
 AB4711.and is referenced to NAD 83.
 AB4711
 AB4711. The following values were computed from the NAD 83(2011) position.
 AB4711
 AB4711;                    North         East     Units Scale Factor Converg.
 AB4711;SPC MD       -   195,621.954   392,444.582   MT  0.99999637   -0 03 18.3
 AB4711;SPC MD       -   641,803.03  1,287,545.27   sFT  0.99999637   -0 03 18.3
 AB4711;UTM  18      - 4,366,450.891   320,306.648   MT  0.99999757   -1 19 34.8
 AB4711
 AB4711!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4711!SPC MD       -   0.99996811  x   0.99999637  =   0.99996448
 AB4711!UTM  18      -   0.99996811  x   0.99999757  =   0.99996568
 AB4711
 AB4711:                Primary Azimuth Mark                     Grid Az
 AB4711:SPC MD       -  FLEMING                                  138 25 01.8
 AB4711:UTM  18      -  FLEMING                                  139 41 18.3
 AB4711
 AB4711_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2030666450(NAD 83)
 AB4711
 AB4711|---------------------------------------------------------------------|
 AB4711| PID    Reference Object                     Distance      Geod. Az  |
 AB4711|                                                           dddmmss.s |
 AB4711| AB4685 FLEMING                             APPROX. 0.6 KM 1382143.5 |
 AB4711|---------------------------------------------------------------------|
 AB4711
 AB4711                          SUPERSEDED SURVEY CONTROL
 AB4711
 AB4711  NAD 83(2007)-  39 25 43.95157(N)    077 05 15.90484(W) AD(2002.00) 0
 AB4711  ELLIP H (02/10/07)  203.321  (m)                       GP(2002.00)    
 AB4711  ELLIP H (08/30/02)  203.307  (m)                       GP(       ) 4 2
 AB4711  NAD 83(1991)-  39 25 43.95148(N)    077 05 15.90464(W) AD(       ) 1
 AB4711  ELLIP H (07/03/96)  203.212  (m)                       GP(       ) 1 1
 AB4711  NAVD 88 (07/03/96)  235.3    (m)  GEOID93  model used  GPS OBS        
 AB4711
 AB4711.Superseded values are not recommended for survey control.
 AB4711
 AB4711.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4711.See file dsdata.pdf to determine how the superseded data were derived.
 AB4711
 AB4711_MARKER: DD = SURVEY DISK
 AB4711_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4711_STAMPING: FLEMING AZIMUTH 1995
 AB4711_MARK LOGO: MD-013
 AB4711_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4711_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4711+STABILITY: SURFACE MOTION
 AB4711_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4711+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4711
 AB4711  HISTORY     - Date     Condition        Report By
 AB4711  HISTORY     - 1995     MONUMENTED       MD-013
 AB4711
 AB4711                          STATION DESCRIPTION
 AB4711
 AB4711'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4711'STATION IS LOCATED ABOUT 11.5 MI (18.5 KM) SOUTHWEST OF WESTMINSTER
 AB4711'AND ABOUT 5 MI (8.0 KM) NORTHEAST OF MOUNT AIRY. TO REACH STATION FROM
 AB4711'THE INTERSECTION OF MD ROUTE 26 (LIBERTY ROAD) AND MD ROUTE 27 (RIDGE
 AB4711'ROAD) GO SOUTH ON MD ROUTE 27 FOR 1.6 MI (2.6 KM) TO THE INTERSECTION
 AB4711'WITH GILLIS ROAD. TURN LEFT ON GILLIS ROAD AND GO EAST FOR 1.1 MI (1.8
 AB4711'KM) TO THE STATION ON THE RIGHT, STATION MARK IS SET IN THE TOP OF A
 AB4711'10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 22.0
 AB4711'FT (6.7 M) SOUTHWEST OF THE CENTERLINE OF THE ROAD, 64.6 FT (19.7 M)
 AB4711'SOUTH OF TELEPHONE PEDESTAL NO.18 ON THE NORTHEAST SIDE OF THE ROAD,
 AB4711'141.5 FT (43.1 M) SOUTHEAST OF POWER POLE NO.F29526 AND 184.4
 AB4711'NORTHWEST OF A POWER POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DO9651 ***********************************************************************
 DO9651  DESIGNATION -  FLEMING RESET
 DO9651  PID         -  DO9651
 DO9651  STATE/COUNTY-  MD/DORCHESTER
 DO9651  COUNTRY     -  US
 DO9651  USGS QUAD   -  BLACKWATER RIVER (2016)
 DO9651
 DO9651                         *CURRENT SURVEY CONTROL
 DO9651  ______________________________________________________________________
 DO9651* NAD 83(1991) POSITION- 38 28 36.74631(N) 076 01 15.18660(W)   ADJUSTED
 DO9651* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 DO9651  ______________________________________________________________________
 DO9651  GEOID HEIGHT    -        -35.258 (meters)                     GEOID18
 DO9651  LAPLACE CORR    -         -2.23  (seconds)                    DEFLEC18
 DO9651  HORZ ORDER      -  FIRST
 DO9651
 DO9651.The horizontal coordinates were established by classical geodetic methods
 DO9651.and adjusted by the National Geodetic Survey in January 1992.
 DO9651
 DO9651.The orthometric height was scaled from a topographic map.
 DO9651
 DO9651.Significant digits in the geoid height do not necessarily reflect accuracy.
 DO9651.GEOID18 height accuracy estimate available here.
 DO9651
 DO9651.Click photographs - Photos may exist for this station.
 DO9651
 DO9651.The Laplace correction was computed from DEFLEC18 derived deflections.
 DO9651
 DO9651. The following values were computed from the NAD 83(1991) position.
 DO9651
 DO9651;                    North         East     Units Scale Factor Converg.
 DO9651;SPC MD       -    90,394.441   485,434.333   MT  0.99997394   +0 36 52.3
 DO9651;SPC MD       -   296,569.10  1,592,629.14   sFT  0.99997394   +0 36 52.3
 DO9651;UTM  18      - 4,259,220.967   410,951.454   MT  0.99969765   -0 38 06.8
 DO9651
 DO9651!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DO9651!SPC MD       -   1.00000510  x   0.99997394  =   0.99997904
 DO9651!UTM  18      -   1.00000510  x   0.99969765  =   0.99970275
 DO9651
 DO9651:                Primary Azimuth Mark                     Grid Az
 DO9651:SPC MD       -  FLEMING AZ MK                            178 10 12.9
 DO9651:UTM  18      -  FLEMING AZ MK                            179 25 12.0
 DO9651
 DO9651_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1095159220(NAD 83)
 DO9651
 DO9651|---------------------------------------------------------------------|
 DO9651| PID    Reference Object                     Distance      Geod. Az  |
 DO9651|                                                           dddmmss.s |
 DO9651| CX2770 FLEMING RM 1                         38.270 METERS 08901     |
 DO9651| CX2771 FLEMING RM 2                         52.447 METERS 17059     |
 DO9651| CX2769 FLEMING AZ MK                                      1784705.2 |
 DO9651| HV6403 BLACKWATER LOOKOUT TOWER            APPROX. 7.6 KM 2345119.7 |
 DO9651| HV6447 CHURCH CREEK LOOKOUT TOWER          APPROX.10.6 KM 2682633.4 |
 DO9651|---------------------------------------------------------------------|
 DO9651
 DO9651                          SUPERSEDED SURVEY CONTROL
 DO9651
 DO9651  NAD 83(1991)-  38 28 36.74316(N)    076 01 15.20496(W) AD(       ) 1
 DO9651  NAD 27      -  38 28 36.31300(N)    076 01 16.42900(W) AD(       ) 1
 DO9651
 DO9651.Superseded values are not recommended for survey control.
 DO9651
 DO9651.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DO9651.See file dsdata.pdf to determine how the superseded data were derived.
 DO9651
 DO9651_MARKER: DH = HORIZONTAL CONTROL DISK
 DO9651_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DO9651_STAMPING: FLEMING 1942 1992
 DO9651_MARK LOGO: NGS
 DO9651_PROJECTION: RECESSED
 DO9651_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DO9651+STABILITY: SURFACE MOTION
 DO9651_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DO9651+SATELLITE: SATELLITE OBSERVATIONS - April 30, 2015
 DO9651
 DO9651  HISTORY     - Date     Condition        Report By
 DO9651  HISTORY     - 19920305 MONUMENTED       NGS
 DO9651  HISTORY     - 20150430 SEE DESCRIPTION  PROFLN
 DO9651
 DO9651                          STATION DESCRIPTION
 DO9651
 DO9651'DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 (RGP)
 DO9651'FLEMING WAS RESET IN 1992 BY RALPH POUST.
 DO9651'A NEW SURFACE AND SUB SURFACE MARK WERE SET HOLDING THE POSITION
 DO9651'OF THE ORIGINAL SUB SURFACE MARK.  REFERENCE MARKS RM 1 AND RM 2
 DO9651'WERE NOT RECOVERED.  THE AZIMUTH WAS RECOVERED IN GOOD CONDITION.
 DO9651'
 DO9651'THE MARK IS A STANDARD NGS HORIZONTAL CONTROL DISK SET INTO A
 DO9651'12 INCH ROUND CONCRETE POST, RECESSED 2.0 FEET BELOW THE
 DO9651'SURFACE.  THE MARK IS STAMPED--FLEMING 1942 1992--.  THE
 DO9651'UNDERGROUND MARK IS 4.3 FEET BELOW THE SURFACE.
 DO9651'
 DO9651'TO REACH THE STATION FROM THE SOUTH END OF THE CHOPTANK RIVER
 DO9651'BRIDGE IN CAMBRIDGE, MD., GO SOUTH AND EAST ON US HWY 50 FOR
 DO9651'2.2 MILES TO AN INTERSECTION.  TURN RIGHT AND GO SOUTH ON
 DO9651'BUCKTOWN ROAD FOR 5.79 MILES TO THE MARK ON THE RIGHT IN A
 DO9651'CULTIVATED FIELD.
 DO9651'
 DO9651'THE MARK IS 12.5 FEET SE OF POWER POLE WITH NO NUMBER,
 DO9651'91.5 FEET FEET WEST FROM THE CENTERLINE OF BUCKTOWN ROAD,
 DO9651'42,5 FEET WEST OF A 12 INCH SQUARE BOUNDARY STONE.
 DO9651'AND 11.8 FEET SOUTHEAST FROM A WITNESS POST.
 DO9651'
 DO9651'THE AZIMUTH MARK IS A STANDARD CGS AZIMUTH DISK, SET INTO A
 DO9651'12 INCH SQUARE CONCRETE POST, PROJECTING 1.3 FEET.  THE MARK
 DO9651'IS STAMPED--FLEMING 1942.--.
 DO9651'
 DO9651'TO REACH THE AZ MK FROM THE SOUTH END OF THE CHOPTANK RIVER
 DO9651'BRIDGE IN CAMBRIDGE, MD., GO SOUTH AND EAST ON US HWY 50 FOR
 DO9651'2.2 MILES TO AN INTERSECTION, TURN RIGHT AND GO SOUTH ON
 DO9651'BUCKTOWN ROAD FOR 6.19 MILES TO A ROAD LEFT AND THE MARK
 DO9651'LEFT IN A CULTIVATED FIELD.
 DO9651'
 DO9651'THE MARK IS 12.5 FEET SE OF POWER POLE WITH NO NUMBER,
 DO9651'83.5 FEET EAST FROM THE CENTERLINE OF BUCKTOWN ROAD,
 DO9651'92.8 FEET NORTHEAST FROM THE CENTERLINE OF DECOURSEY BRIDGE
 DO9651'ROAD, 8.4 FEET NPORTH OF POWER POLE 308-80-1,
 DO9651'AND 0.9 FEET WEST FROM A WITNESS POST.
 DO9651'
 DO9651'THE AZIMUTH MARK IS ALSO A DORCHESTER COUNTY BENCH MARK.
 DO9651
 DO9651                          STATION RECOVERY (2015)
 DO9651
 DO9651'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2015 (JRO)
 DO9651'KNOCKED ON DOORS OF ADJOINING FARMHOUSES BUT NO ONE RESPONDED TO GIVE
 DO9651'PERMISSION TO DIG FOR THE MARK AND NO ONE WAS OUT AND ABOUT -
 DO9651'THEREFORE I DID NOT MAKE ANY EFFORT TO LOCATE IT FROM OPUS-RS POSITION
 DO9651'ESTABLISHED ON THE NEARBY 4 FT (1.2 M) HIGH SANDSTONE MONUMENT.
 DO9651'ANOTHER DAY MAYBE.  FOUND THE AZIMUTH MARK IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6224 ***********************************************************************
 DN6224  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6224  DESIGNATION -  FLETCH
 DN6224  PID         -  DN6224
 DN6224  STATE/COUNTY-  MD/CECIL
 DN6224  COUNTRY     -  US
 DN6224  USGS QUAD   -  NEWARK WEST (2016)
 DN6224
 DN6224                         *CURRENT SURVEY CONTROL
 DN6224  ______________________________________________________________________
 DN6224* NAD 83(2011) POSITION- 39 39 20.33005(N) 075 48 33.71374(W)   ADJUSTED
 DN6224* NAD 83(2011) ELLIP HT-     8.144 (meters)        (06/27/12)   ADJUSTED
 DN6224* NAD 83(2011) EPOCH   -  2010.00
 DN6224* NAVD 88 ORTHO HEIGHT -    41.20  (meters)      135.2   (feet) GPS OBS
 DN6224  ______________________________________________________________________
 DN6224  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6224  GEOID HEIGHT    -        -33.038 (meters)                     GEOID03
 DN6224  GEOID HEIGHT    -        -33.061 (meters)                     GEOID18
 DN6224  NAD 83(2011) X  -  1,205,446.802 (meters)                     COMP
 DN6224  NAD 83(2011) Y  - -4,767,155.720 (meters)                     COMP
 DN6224  NAD 83(2011) Z  -  4,048,628.193 (meters)                     COMP
 DN6224  LAPLACE CORR    -          1.18  (seconds)                    DEFLEC18
 DN6224
 DN6224  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6224  Standards:
 DN6224         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6224            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6224  -------------------------------------------------------------------
 DN6224  NETWORK    0.69   1.47           0.31   0.25   0.75      0.10196980
 DN6224  -------------------------------------------------------------------
 DN6224  Click here for local accuracies and other accuracy information.
 DN6224
 DN6224.The horizontal coordinates were established by GPS observations
 DN6224.and adjusted by the National Geodetic Survey in June 2012.
 DN6224
 DN6224.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6224.been affixed to the stable North American tectonic plate. See 
 DN6224.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6224
 DN6224.The horizontal coordinates are valid at the epoch date displayed above
 DN6224.which is a decimal equivalence of Year/Month/Day.
 DN6224
 DN6224.The orthometric height was determined by GPS observations and a
 DN6224.high-resolution geoid model using precise GPS observation and
 DN6224.processing techniques.
 DN6224
 DN6224.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6224.GEOID18 height accuracy estimate available here.
 DN6224
 DN6224.Click photographs - Photos may exist for this station.
 DN6224
 DN6224.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6224
 DN6224.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6224
 DN6224.The ellipsoidal height was determined by GPS observations
 DN6224.and is referenced to NAD 83.
 DN6224
 DN6224. The following values were computed from the NAD 83(2011) position.
 DN6224
 DN6224;                    North         East     Units Scale Factor Converg.
 DN6224;SPC MD       -   221,462.693   502,183.238   MT  1.00004245   +0 44 50.2
 DN6224;SPC MD       -   726,582.19  1,647,579.51   sFT  1.00004245   +0 44 50.2
 DN6224;UTM  18      - 4,389,851.546   430,566.636   MT  0.99965935   -0 30 59.5
 DN6224
 DN6224!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6224!SPC MD       -   0.99999872  x   1.00004245  =   1.00004117
 DN6224!UTM  18      -   0.99999872  x   0.99965935  =   0.99965807
 DN6224
 DN6224_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3056689851(NAD 83)
 DN6224
 DN6224                          SUPERSEDED SURVEY CONTROL
 DN6224
 DN6224  NAD 83(2007)-  39 39 20.33027(N)    075 48 33.71435(W) AD(2002.00) 1
 DN6224  ELLIP H (02/23/12)    8.176  (m)                       GP(2002.00) 4 1
 DN6224
 DN6224.Superseded values are not recommended for survey control.
 DN6224
 DN6224.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6224.See file dsdata.pdf to determine how the superseded data were derived.
 DN6224
 DN6224_MARKER: DD = SURVEY DISK
 DN6224_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6224_STAMPING: FLETCH 2008
 DN6224_MARK LOGO: MD-015
 DN6224_PROJECTION: FLUSH
 DN6224_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6224_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6224+STABILITY: SURFACE MOTION
 DN6224_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6224+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6224
 DN6224  HISTORY     - Date     Condition        Report By
 DN6224  HISTORY     - 20081204 MONUMENTED       GWS
 DN6224
 DN6224                          STATION DESCRIPTION
 DN6224
 DN6224'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6224'THE STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) EAST-NORTHEAST OF NORTH
 DN6224'EAST, 3.6 MI (5.8 KM) NORTH-NORTHEAST OF ELKTON AND 0.9 MI (1.4 KM)
 DN6224'EAST-SOUTHEAST OF ELK MILLS.
 DN6224'
 DN6224'TO REACH FROM THE JUNCTION OF MD 316 AND MD 277, GO EAST ON MD 277 FOR
 DN6224'0.23 MI (0.4 KM) TO THE STATION ON THE LEFT.
 DN6224'
 DN6224'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6224'CONCRETE MONUMENT, 570 FT (173.7 M) EAST OF OAKRIDGE COURT, 29.4 NORTH
 DN6224'OF THE CENTERLINE OF MD 277 (FLETCHWOOD ROAD), 55.9 FT (17.0 M) WEST
 DN6224'OF A UTILITY POLE (CONECTIV 41260/40163, CONOWINGO 26430 P.C.) AND
 DN6224'66.5 FT (20.3 M) SOUTHWEST OF A 48 INCH (122 CM) OAK TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5400 ***********************************************************************
 JV5400  DESIGNATION -  FLIGHT TEST MARTIN CO 202
 JV5400  PID         -  JV5400
 JV5400  STATE/COUNTY-  MD/BALTIMORE
 JV5400  COUNTRY     -  US
 JV5400  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5400
 JV5400                         *CURRENT SURVEY CONTROL
 JV5400  ______________________________________________________________________
 JV5400* NAD 83(1991) POSITION- 39 19 04.66069(N) 076 24 35.48417(W)   ADJUSTED
 JV5400* NAVD 88 ORTHO HEIGHT -    10.    (meters)       33.    (feet) SCALED
 JV5400  ______________________________________________________________________
 JV5400  GEOID HEIGHT    -        -33.047 (meters)                     GEOID18
 JV5400  LAPLACE CORR    -         -2.36  (seconds)                    DEFLEC18
 JV5400  HORZ ORDER      -  SECOND
 JV5400
 JV5400.This mark is at Martin State Airport (MTN)
 JV5400
 JV5400.The horizontal coordinates were established by classical geodetic methods
 JV5400.and adjusted by the National Geodetic Survey in January 1992.
 JV5400
 JV5400.The orthometric height was scaled from a topographic map.
 JV5400
 JV5400.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5400.GEOID18 height accuracy estimate available here.
 JV5400
 JV5400.Click photographs - Photos may exist for this station.
 JV5400
 JV5400.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5400
 JV5400. The following values were computed from the NAD 83(1991) position.
 JV5400
 JV5400;                    North         East     Units Scale Factor Converg.
 JV5400;SPC MD       -   183,469.001   450,891.003   MT  0.99997957   +0 22 13.4
 JV5400;SPC MD       -   601,931.21  1,479,298.23   sFT  0.99997957   +0 22 13.4
 JV5400;UTM  18      - 4,353,009.617   378,463.871   MT  0.99978187   -0 53 36.3
 JV5400
 JV5400!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5400!SPC MD       -   1.00000366  x   0.99997957  =   0.99998323
 JV5400!UTM  18      -   1.00000366  x   0.99978187  =   0.99978553
 JV5400
 JV5400:                Primary Azimuth Mark                     Grid Az
 JV5400:SPC MD       -  FLIGHT TEST MARTIN CO 202 AZ MK          297 21 23.6
 JV5400:UTM  18      -  FLIGHT TEST MARTIN CO 202 AZ MK          298 37 13.3
 JV5400
 JV5400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7846353009(NAD 83)
 JV5400
 JV5400|---------------------------------------------------------------------|
 JV5400| PID    Reference Object                     Distance      Geod. Az  |
 JV5400|                                                           dddmmss.s |
 JV5400| JV5386 A POINT 1961                        278.696 METERS 05307     |
 JV5400| CA9433 FLIGHT TEST MARTIN CO 202 AZ MK                    2974337.0 |
 JV5400|---------------------------------------------------------------------|
 JV5400
 JV5400                          SUPERSEDED SURVEY CONTROL
 JV5400
 JV5400  NAD 83(1986)-  39 19 04.65250(N)    076 24 35.49662(W) AD(       ) 2
 JV5400  NAD 27      -  39 19 04.26970(N)    076 24 36.63980(W) AD(       ) 2
 JV5400
 JV5400.Superseded values are not recommended for survey control.
 JV5400
 JV5400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5400.See file dsdata.pdf to determine how the superseded data were derived.
 JV5400
 JV5400_MARKER: DD = SURVEY DISK
 JV5400_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV5400_SP_SET: APRON
 JV5400_STAMPING: 202 FLIGHT TEST MARTIN CO.
 JV5400_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5400+STABILITY: SURFACE MOTION
 JV5400
 JV5400  HISTORY     - Date     Condition        Report By
 JV5400  HISTORY     - 1956     MONUMENTED       CGS
 JV5400  HISTORY     - 1961     GOOD             CGS
 JV5400  HISTORY     - 1961     GOOD             CGS
 JV5400  HISTORY     - 19940930 MARK NOT FOUND   USPSQD
 JV5400
 JV5400                          STATION DESCRIPTION
 JV5400
 JV5400'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (EAT)
 JV5400'STATION IS LOCATED AT THE GLEN L. MARTIN MIDDLE RIVER AIRPORT, ON
 JV5400'THE CONCRETE APRON SURROUNDING THE STRAWBERRY POINT HANGAR, ABOUT
 JV5400'300 FT. W-SW OF THE SW CORNER OF THE HANGAR, ABOUT 75 FT. N OF THE
 JV5400'S FENCE, AND ABOUT 90 FT. E OF THE W FENCE.
 JV5400'
 JV5400'A 2-IN. BRONZE DISK SET FLUSH IN THE CONCRETE SURFACE, STAMPED
 JV5400'FLIGHT TEST MARTIN CO 202.
 JV5400'
 JV5400'THE STATION WAS LOCATED BY TRAVERSE WITH A WILD SUBTENSE BAR FROM
 JV5400'A POINT ON THE ROOF OF THE HANGAR ESTABLISHED BY RESECTION.
 JV5400
 JV5400                          STATION RECOVERY (1961)
 JV5400
 JV5400'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (JFW)
 JV5400'THE STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV5400'
 JV5400'ONE CORRECTION TO THE DESCRIPTION BY E.A.T. IN 1956 IS AS FOLLOWS.
 JV5400'
 JV5400'THE STATION IS ABOUT 75 FT. N.W. OF THE S.E. FENCE, AND ABOUT 90
 JV5400'FT. S.E. OF THE S.W. FENCE.
 JV5400
 JV5400                          STATION RECOVERY (1961)
 JV5400
 JV5400'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JV5400'THE STATION MARK AND THE AZIMUTH MARK WAS RECOVERED AND IN GOOD
 JV5400'CONDITION.
 JV5400'
 JV5400'A COMPLETE DESCRIPTION FOLLOWS--
 JV5400'
 JV5400'TO REACH THE STATION FROM THE GATE ENTRANCE AT STRAWBERRY POINT,
 JV5400'GO SOUTHWEST FOR ABOUT 600.0 FEET TO THE MISSILE CHECKOUT BUILDING
 JV5400'AND THE STATION AS DESCRIBED.
 JV5400'
 JV5400'THE STATION MARK IS A 2-1/2 INCH BRONZE DISK STAMPED 202 FLIGHT
 JV5400'TEST MARTIN CO., CEMENTED IN A DRILL HOLE IN THE CONCRETE APRON
 JV5400'SURROUNDING THE STRAWBERRY POINT MISSILE CHECKOUT HANGAR.  IT IS
 JV5400'31.3 FEET EAST-SOUTHEAST OF THE CENTER OF THE NORTHEAST DOORWAY
 JV5400'ENTRANCE TO THE TEST HANGAR, 22.0 FEET NORTH-NORTHEAST OF THE
 JV5400'SOUTHEAST DOORWAY ENTRANCE TO THE TEST HANGAR, 89.3 FEET SOUTH OF
 JV5400'A 2 INCH PIPE FENCE LINE AND 154.5 FEET SOUTHEAST OF A CYCLONE
 JV5400'FENCE LINE.
 JV5400'
 JV5400'TO REACH THE AZIMUTH MARK FROM THE STRAWBERRY POINT GATE
 JV5400'ENTRANCE, GO SOUTHEAST AND NORTHWEST ON THE MAIN MACADAM ROAD FOR
 JV5400'0.35 MILE TO THE AZIMUTH MARK ON THE LEFT ABOUT 300.0 FEET FROM
 JV5400'THE APPROXIMATE CENTER OF THE ROAD.  THE AZIMUTH MARK IS A 2-1/2
 JV5400'INCH BRONZE DISK STAMPED 202 FLIGHT TEST MARTIN CO. SET IN 6 FT BY
 JV5400'6 FT CONCRETE FOUNDATION WHICH PROJECTS ABOUT 6 INCHES ABOVE THE
 JV5400'GROUND SURFACE.  IT IS ENCLOSED BY A CYCLONE FENCE.
 JV5400
 JV5400                          STATION RECOVERY (1994)
 JV5400
 JV5400'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5400'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1387 ***********************************************************************
 JW1387  DESIGNATION -  FLINT
 JW1387  PID         -  JW1387
 JW1387  STATE/COUNTY-  MD/WASHINGTON
 JW1387  COUNTRY     -  US
 JW1387  USGS QUAD   -  HANCOCK (2016)
 JW1387
 JW1387                         *CURRENT SURVEY CONTROL
 JW1387  ______________________________________________________________________
 JW1387* NAD 83(1991) POSITION- 39 42 06.71878(N) 078 12 13.03963(W)   ADJUSTED
 JW1387* NAVD 88 ORTHO HEIGHT -   222.5   (meters)      730.    (feet) VERTCON3
 JW1387  ______________________________________________________________________
 JW1387  GEOID HEIGHT    -        -33.976 (meters)                     GEOID18
 JW1387  LAPLACE CORR    -         -4.31  (seconds)                    DEFLEC18
 JW1387  HORZ ORDER      -  FIRST
 JW1387
 JW1387.The horizontal coordinates were established by classical geodetic methods
 JW1387.and adjusted by the National Geodetic Survey in January 1992.
 JW1387
 JW1387.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1387.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1387
 JW1387.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1387.GEOID18 height accuracy estimate available here.
 JW1387
 JW1387.Click photographs - Photos may exist for this station.
 JW1387
 JW1387.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1387
 JW1387. The following values were computed from the NAD 83(1991) position.
 JW1387
 JW1387;                    North         East     Units Scale Factor Converg.
 JW1387;SPC MD       -   226,608.744   296,769.907   MT  1.00005378   -0 45 19.6
 JW1387;SPC MD       -   743,465.52    973,652.60   sFT  1.00005378   -0 45 19.6
 JW1387;SPC PA S     -    41,020.230   561,093.970   MT  1.00004425   -0 17 39.5
 JW1387;SPC PA S     -   134,580.54  1,840,855.80   sFT  1.00004425   -0 17 39.5
 JW1387;SPC WV N     -   134,230.309   711,172.295   MT  0.99994162   +0 49 36.5
 JW1387;SPC WV N     -   440,387.27  2,333,237.77   sFT  0.99994162   +0 49 36.5
 JW1387;UTM  17      - 4,398,407.126   739,750.517   MT  1.00030773   +1 47 13.8
 JW1387
 JW1387!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1387!SPC MD       -   0.99997043  x   1.00005378  =   1.00002420
 JW1387!SPC PA S     -   0.99997043  x   1.00004425  =   1.00001467
 JW1387!SPC WV N     -   0.99997043  x   0.99994162  =   0.99991205
 JW1387!UTM  17      -   0.99997043  x   1.00030773  =   1.00027815
 JW1387
 JW1387:                Primary Azimuth Mark                     Grid Az
 JW1387:SPC MD       -  FLINT AZ MK                              213 16 47.8
 JW1387:SPC PA S     -  FLINT AZ MK                              212 49 07.7
 JW1387:SPC WV N     -  FLINT AZ MK                              211 41 51.7
 JW1387:UTM  17      -  FLINT AZ MK                              210 44 14.4
 JW1387
 JW1387_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD3975098407(NAD 83)
 JW1387
 JW1387|---------------------------------------------------------------------|
 JW1387| PID    Reference Object                     Distance      Geod. Az  |
 JW1387|                                                           dddmmss.s |
 JW1387| JW1207 FLINT AZ MK                                        2123128.2 |
 JW1387| CJ9789 FLINT RM 1                           15.562 METERS 21500     |
 JW1387| JW1394 SIDELING HILL WU STA 17 TWR         APPROX. 8.4 KM 2603643.5 |
 JW1387| CJ9790 FLINT RM 2                           19.954 METERS 29838     |
 JW1387|---------------------------------------------------------------------|
 JW1387
 JW1387                          SUPERSEDED SURVEY CONTROL
 JW1387
 JW1387  NAD 83(1986)-  39 42 06.71995(N)    078 12 13.04406(W) AD(       ) 1
 JW1387  NAD 27      -  39 42 06.38500(N)    078 12 14.02200(W) AD(       ) 1
 JW1387  NGVD 29 (07/19/86)  222.7    (m)          731.     (f) VERT ANG       
 JW1387
 JW1387.Superseded values are not recommended for survey control.
 JW1387
 JW1387.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1387.See file dsdata.pdf to determine how the superseded data were derived.
 JW1387
 JW1387_MARKER: DS = TRIANGULATION STATION DISK
 JW1387_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1387_STAMPING: FLINT 1955
 JW1387_MARK LOGO: CGS
 JW1387_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1387+STABILITY: SURFACE MOTION
 JW1387
 JW1387  HISTORY     - Date     Condition        Report By
 JW1387  HISTORY     - 1955     MONUMENTED       CGS
 JW1387  HISTORY     - 1960     GOOD             CGS
 JW1387  HISTORY     - 1974     MARK NOT FOUND   NGS
 JW1387
 JW1387                          STATION DESCRIPTION
 JW1387
 JW1387'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1387'THE STATION IS ABOUT 1 MILE WEST OF HANCOCK, 1/4 MILE NORTH OF
 JW1387'U.S. HIGHWAY 40, 0.2 MILE NORTH-NORTHEAST OF THE HOUSE OF OLD
 JW1387'MR. FLINT, DESIGNATED BY A HISTORICAL SIGN ON THE HIGHWAY, AND
 JW1387'NOW OCCUPIED BY THE PRESENT OWNER MRS. ANDREW COHILL.  IT IS ON
 JW1387'THE SUMMIT OF A PROMINENT HILL, HAVING TREES ON THE NORTH SIDE
 JW1387'AND ORCHARDS ON THE SUMMIT AND SOUTH SLOPES.  IT IS 5 FEET WEST
 JW1387'OF A 4 IN X 4 IN WHITE WITNESS POST.
 JW1387'
 JW1387'TO REACH THE STATION FROM THE MOST WESTERLY TRAFFIC LIGHT ON
 JW1387'MAIN STREET IN HANCOCK, GO WEST ON U.S. HIGHWAY 40 FOR 1.5 MILES
 JW1387'TO THE AZIMUTH MARK ON THE LEFT, CONTINUE WEST ON THE HIGHWAY
 JW1387'FOR 0.3 MILE TO A DIM ROAD LEADING NORTH INTO AN ORCHARD, TURN
 JW1387'RIGHT AND GO NORTH ON THE DIM ROAD FOR 0.3 MILE TO A SIDE ROAD
 JW1387'ON THE RIGHT, TURN RIGHT AND GO EAST 0.1 MILE TO A SIDE ROAD ON
 JW1387'THE LEFT (ABOUT 75 YARDS EAST OF A POINT WHERE THE ROAD GOES
 JW1387'OVER A SMALL RIDGE), TURN LEFT AND GO NORTH BETWEEN ROWS OF
 JW1387'APPLE TREES FOR ABOUT 70 YARDS TO A DIM ROAD LEADING EAST,
 JW1387'TURN RIGHT AND GO EAST FOR 0.2 MILE TO THE HIGHEST POINT AND
 JW1387'THE STATION.
 JW1387'
 JW1387'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1387'STAMPED FLINT 1955.
 JW1387'
 JW1387'REFERENCE MARK 1 IS 55 FEET SOUTHWEST OF THE WITNESS POST.  THE
 JW1387'MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED FLINT NO 1 1955.
 JW1387'
 JW1387'REFERENCE MARK 2 IS 69 FEET NORTHWEST OF THE WITNESS POST.  THE
 JW1387'MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED FLINT NO 2 1955.
 JW1387'
 JW1387'THE AZIMUTH MARK IS AT THE NORTH EDGE OF A PEACH ORCHARD, 25
 JW1387'FEET SOUTH OF THE CENTER OF U.S. HIGHWAY 40, 5 FEET SOUTHEAST OF
 JW1387'A POWERLINE POLE AND 2 FEET WEST OF A 4 IN X 4 IN WHITE WITNESS
 JW1387'POST.  THE MARK PROJECTS 6 INCHES, AND THE DISK IS STAMPED FLINT
 JW1387'1955.
 JW1387'
 JW1387'HEIGHT OF LIGHT ABOVE STATION MARK 18 METERS.
 JW1387
 JW1387                          STATION RECOVERY (1960)
 JW1387
 JW1387'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (JCC)
 JW1387'THE STATION MARK, REFERENCE MARKS 1, 2 AND THE AZIMUTH MARK WERE
 JW1387'RECOVERED AS DESCRIBED AND FOUND IN GOOD CONDITION.  THE DISTANCES
 JW1387'AND DIRECTIONS CHECKED WITH THE PREVIOUS DATA.  THE PROPERTY IS
 JW1387'NOW OWNED BY MRS. ANDREW COHILL.
 JW1387'
 JW1387'A NEW TO REACH THE STATION FOLLOWS--
 JW1387'
 JW1387'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 40 AND
 JW1387'522 IN THE WEST SECTION OF HANCOCK.  GO WEST ON U.S. HIGHWAY 40
 JW1387'FOR 1.3 MILES TO THE AZIMUTH MARK ON THE LEFT.  CONTINUE WEST
 JW1387'ON U.S. HIGHWAY 40 FOR 0.2 MILE TO A DIM ROAD ON THE RIGHT THE
 JW1387'ENTRANCE INTO A FIELD.  TURN RIGHT INTO THE FIELD AND FOLLOW
 JW1387'A DIM FIELD ROAD NORTH, PASSING A SAWMILL ON THE LEFT, FOR 0.35
 JW1387'MILE TO A TRACK ROAD ON THE RIGHT.  TURN RIGHT AND GO EAST ON A
 JW1387'TRACK ROAD FOR 0.3 MILE TO AN OLD SHED AND A DIM TRACK ROAD ON
 JW1387'THE LEFT.  TURN LEFT AND GO NORTH ON A DIM TRACK ROAD,
 JW1387'UPHILL, FOR 0.2 MILE TO THE HIGHEST POINT OF THE HILL AND THE
 JW1387'STATION.
 JW1387'
 JW1387'HEIGHT OF LIGHT ABOVE STATION MARK 24.00 METERS.
 JW1387
 JW1387                          STATION RECOVERY (1974)
 JW1387
 JW1387'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JW1387'A SEARCH WAS MADE FOR THE STATION AND NO MARKS WERE FOUND.  THE
 JW1387'ENTIRE APPLE ORCHARD SURROUNDING THE STATION WAS REMOVED AND
 JW1387'CORN PLANTED IN THE AREA.  THERE WAS NO EVIDENCE OF A APPLE
 JW1387'ORCHARD LEFT, IT APPEARED LIKE ALL ROOTS OF THE TREES WERE
 JW1387'REMOVED BEFORE THE AREA WAS CULTIVATED.  THE SEARCH WAS LIMITED
 JW1387'DUE TO THE TALL CORN.  IT IS POSSIBLE THAT THE STATION
 JW1387'SUB-SURFACE DISK STILL REMAINS INTACT, BUT AT THE TIME IT COULD
 JW1387'NOT BE FOUND.
 JW1387'
 JW1387'THE BANK WHICH THE AZIMUTH MARK WAS LOCATED ON HAS BEEN CUT DOWN
 JW1387'ON THE NORTH SIDE AND IT IS BELIEVED THE MARK WAS DESTROYED OR
 JW1387'COVERED WITH THE DIRT WHICH WAS REMOVED FROM THE NORTH SIDE OF
 JW1387'THE BANK.
 JW1387'
 JW1387'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JW1387'1-1/2 MILES WEST OF HANCOCK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4244 ***********************************************************************
 JV4244  DESIGNATION -  FLINT HILL
 JV4244  PID         -  JV4244
 JV4244  STATE/COUNTY-  MD/MONTGOMERY
 JV4244  COUNTRY     -  US
 JV4244  USGS QUAD   -  SANDY SPRING (2016)
 JV4244
 JV4244                         *CURRENT SURVEY CONTROL
 JV4244  ______________________________________________________________________
 JV4244* NAD 83(2011) POSITION- 39 09 00.08611(N) 077 06 54.29386(W)   ADJUSTED
 JV4244* NAD 83(2011) ELLIP HT-   121.196 (meters)        (06/27/12)   ADJUSTED
 JV4244* NAD 83(2011) EPOCH   -  2010.00
 JV4244* NAVD 88 ORTHO HEIGHT -   153.0   (meters)      502.    (feet) GPS OBS
 JV4244  ______________________________________________________________________
 JV4244  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV4244  GEOID HEIGHT    -        -32.120 (meters)                     GEOID93
 JV4244  GEOID HEIGHT    -        -31.762 (meters)                     GEOID18
 JV4244  NAD 83(2011) X  -  1,104,469.759 (meters)                     COMP
 JV4244  NAD 83(2011) Y  - -4,828,207.970 (meters)                     COMP
 JV4244  NAD 83(2011) Z  -  4,005,323.318 (meters)                     COMP
 JV4244  LAPLACE CORR    -         -1.78  (seconds)                    DEFLEC18
 JV4244
 JV4244  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV4244  Standards:
 JV4244         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV4244            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV4244  -------------------------------------------------------------------
 JV4244  NETWORK    1.20   2.51           0.51   0.47   1.28     -0.02507266
 JV4244  -------------------------------------------------------------------
 JV4244  Click here for local accuracies and other accuracy information.
 JV4244
 JV4244.The horizontal coordinates were established by GPS observations
 JV4244.and adjusted by the National Geodetic Survey in June 2012.
 JV4244
 JV4244.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV4244.been affixed to the stable North American tectonic plate. See 
 JV4244.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV4244
 JV4244.The horizontal coordinates are valid at the epoch date displayed above
 JV4244.which is a decimal equivalence of Year/Month/Day.
 JV4244
 JV4244.The orthometric height was determined by GPS observations and a
 JV4244.high-resolution geoid model.
 JV4244
 JV4244.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4244.GEOID18 height accuracy estimate available here.
 JV4244
 JV4244.Click photographs - Photos may exist for this station.
 JV4244
 JV4244.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV4244
 JV4244.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4244
 JV4244.The ellipsoidal height was determined by GPS observations
 JV4244.and is referenced to NAD 83.
 JV4244
 JV4244. The following values were computed from the NAD 83(2011) position.
 JV4244
 JV4244;                    North         East     Units Scale Factor Converg.
 JV4244;SPC MD       -   164,666.940   390,052.367   MT  0.99996127   -0 04 20.0
 JV4244;SPC MD       -   540,244.79  1,279,696.81   sFT  0.99996127   -0 04 20.0
 JV4244;UTM  18      - 4,335,555.511   317,230.256   MT  1.00001133   -1 20 08.6
 JV4244
 JV4244!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4244!SPC MD       -   0.99998099  x   0.99996127  =   0.99994226
 JV4244!UTM  18      -   0.99998099  x   1.00001133  =   0.99999232
 JV4244
 JV4244:                Primary Azimuth Mark                     Grid Az
 JV4244:SPC MD       -  FLINT HILL AZ MK                         199 20 05.1
 JV4244:UTM  18      -  FLINT HILL AZ MK                         200 35 53.7
 JV4244
 JV4244_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1723035555(NAD 83)
 JV4244
 JV4244|---------------------------------------------------------------------|
 JV4244| PID    Reference Object                     Distance      Geod. Az  |
 JV4244|                                                           dddmmss.s |
 JV4244| JV4251 MT ZION PEPCO MICROWAVE             APPROX. 4.5 KM 0124401.7 |
 JV4244| CJ9792 FLINT HILL RM 1                      24.379 METERS 07932     |
 JV4244| JV4248 OLNEY WSSC TANK                     APPROX. 4.3 KM 0931104.0 |
 JV4244| JV4311 NORBECK ST PATRICK CATH CH          APPROX. 5.4 KM 1482053.4 |
 JV4244| JV4344 ROCKVILLE E MUN TANK                APPROX. 7.8 KM 1960324.0 |
 JV4244| CJ9791 FLINT HILL AZ MK                                   1991545.1 |
 JV4244| JV4358 ROCKVILLE RAD STA WINX CEN MST      APPROX. 6.6 KM 2081043.8 |
 JV4244| JV4368 ROCKVILLE ATL SEABOARD TOWER        APPROX. 6.4 KM 2142500.7 |
 JV4244| JV4356 ROCKVILLE GUDE SONS CO STACK        APPROX. 5.8 KM 2150750.4 |
 JV4244| CJ9793 FLINT HILL RM 2                      23.904 METERS 22542     |
 JV4244| JV4382 SHADY GROVE WSSC TANK               APPROX. 6.5 KM 2385053.3 |
 JV4244|---------------------------------------------------------------------|
 JV4244
 JV4244                          SUPERSEDED SURVEY CONTROL
 JV4244
 JV4244  NAD 83(2007)-  39 09 00.08623(N)    077 06 54.29467(W) AD(2002.00) 0
 JV4244  ELLIP H (02/10/07)  121.229  (m)                       GP(2002.00)    
 JV4244  ELLIP H (08/30/02)  121.235  (m)                       GP(       ) 4 2
 JV4244  NAD 83(1993)-  39 09 00.08559(N)    077 06 54.29450(W) AD(       ) 1
 JV4244  ELLIP H (01/11/94)  121.166  (m)                       GP(       ) 4 1
 JV4244  NAD 83(1991)-  39 09 00.08550(N)    077 06 54.29436(W) AD(       ) 1
 JV4244  NAD 83(1986)-  39 09 00.08524(N)    077 06 54.30422(W) AD(       ) 1
 JV4244  NAD 27      -  39 08 59.69840(N)    077 06 55.37457(W) AD(       ) 1
 JV4244  NGVD 29 (07/19/86)  153.1    (m)          502.     (f) VERT ANG       
 JV4244
 JV4244.Superseded values are not recommended for survey control.
 JV4244
 JV4244.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4244.See file dsdata.pdf to determine how the superseded data were derived.
 JV4244
 JV4244_MARKER: DD = SURVEY DISK
 JV4244_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4244_STAMPING: FLINT HILL 1969
 JV4244_MARK LOGO: CGS
 JV4244_PROJECTION: RECESSED 38 CENTIMETERS
 JV4244_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4244+STABILITY: SURFACE MOTION
 JV4244_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4244+SATELLITE: SATELLITE OBSERVATIONS - December 11, 2020
 JV4244
 JV4244  HISTORY     - Date     Condition        Report By
 JV4244  HISTORY     - 1969     MONUMENTED       CGS
 JV4244  HISTORY     - 1969     GOOD             CGS
 JV4244  HISTORY     - 19930331 GOOD             MSI
 JV4244  HISTORY     - 20201211 SEE DESCRIPTION  PROFLN
 JV4244
 JV4244                          STATION DESCRIPTION
 JV4244
 JV4244'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4244'THE STATION IS ABOUT 5 MILES NORTHEAST OF ROCKVILLE, 4 MILES EAST
 JV4244'OF GAITHERSBURG, 2-1/2 MILES WEST OF OLNEY, ON THE HIGHEST POINT
 JV4244'IN THE IMMEDIATE VICINITY, AND ON PROPERTY OWNED BY HARRY H.
 JV4244'FRALEY.
 JV4244'
 JV4244'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 28
 JV4244'AND STATE HIGHWAY 108 IN OLNEY, GO NORTHWESTERLY ON STATE HIGHWAY
 JV4244'108 FOR 1.0 MILE TO A SIDE ROAD LEFT, BOWIE MILL ROAD.  TURN LEFT,
 JV4244'AND GO SOUTHWESTERLY ON BOWIE MILL ROAD FOR 2.3 MILES TO A PRIVATE
 JV4244'DRIVE ON THE RIGHT, AT A POINT WHERE BOWIE MILL ROAD TURNS LEFT,
 JV4244'SOUTH.  (TO REACH THE AZIMUTH MARK FROM THIS POINT, CONTINUE
 JV4244'SOUTH ON BOWIE MILL ROAD FOR 0.6 MILE TO THE MARK ON THE LEFT.)
 JV4244'TURN RIGHT AND GO NORTH, THEN BEARING AROUND TO THE SOUTHEAST,
 JV4244'CIRCLING AROUND A FARM HOUSE FOR 0.15 MILE TO A GATE INTO A
 JV4244'BARNYARD.  PASS THROUGH THE GATE AND TURN RIGHT, SOUTH, FOR 0.05
 JV4244'MILE TO THE STATION ON THE RIGHT.
 JV4244'
 JV4244'THE STATION MARK IS A STANDARD DISK, STAMPED FLINT HILL 1969, SET
 JV4244'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV4244'IS 15 INCHES BELOW THE SURFACE OF THE GROUND.  IT IS 52.2 FEET
 JV4244'SOUTH OF A POWER LINE POLE NUMBERED PEP 748494, 47.2 FEET WEST OF
 JV4244'A CENTER POST BETWEEN 2 GATES, 40.0 FEET SOUTHWEST OF A
 JV4244'NORTHWEST-SOUTHEAST FENCE LINE, AND 36.3 FEET SOUTHEAST OF A
 JV4244'NORTHEAST-SOUTHWEST FENCE LINE.  THE UNDERGROUND MARK IS 40
 JV4244'INCHES BELOW THE GROUND SURFACE.
 JV4244'
 JV4244'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED FLINT HILL NO 1 1969,
 JV4244'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV4244'THAT PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 104.6 FEET
 JV4244'SOUTHEAST OF THE POWER LINE POLE NUMBERED PEP 748494, 38.4 FEET
 JV4244'SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF A BARN, 0.7 FOOT
 JV4244'SOUTHWEST OF THE NORTHWEST-SOUTHEAST FENCE, AND ABOUT 2 FEET
 JV4244'LOWER IN ELEVATION THAN THE STATION.
 JV4244'
 JV4244'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED FLINT HILL NO 2 1969,
 JV4244'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 JV4244'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 108.5 FEET SOUTHWEST
 JV4244'OF THE POWER LINE POLE NUMBERED PEP 748494, 0.8 FOOT SOUTHEAST OF
 JV4244'THE NORTHEAST-SOUTHWEST FENCE, AND ABOUT THE SAME ELEVATION AS
 JV4244'THE STATION.
 JV4244'
 JV4244'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED FLINT HILL 1969, SET
 JV4244'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 JV4244'PROJECTS 6 INCHES ABOVE THE GROUND.  IT IS 34.0 FEET EAST OF THE
 JV4244'CENTERLINE OF BOWIE MILL ROAD, 5.5 FEET NORTHEAST OF A POWER LINE
 JV4244'POLE NUMBERED 77, 2.0 FEET NORTH OF A WITNESS POST, AND 1.0 FOOT
 JV4244'WEST OF A NORTH-SOUTH FENCE.
 JV4244
 JV4244                          STATION RECOVERY (1969)
 JV4244
 JV4244'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969
 JV4244'RECOVERED IN GOOD CONDITION.
 JV4244
 JV4244                          STATION RECOVERY (1993)
 JV4244
 JV4244'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 JV4244'RECOVERED IN GOOD CONDITION.
 JV4244
 JV4244                          STATION RECOVERY (2020)
 JV4244
 JV4244'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2020 (JRO)
 JV4244'THE MARK IS IN A MUDDY FIELD RUN BY LIVESTOCK SO NOT SEARCHED FOR BUT
 JV4244'IT SHOULD BE GOOD, JUST HARD TO USE.  BOTH RMS WERE GOOD, OBVIOUS IN
 JV4244'FENCE LINES.  THE OWNER WAS COOPERATIVE TO POINT OUT THE RMS.
 JV4244'
 JV4244'RM 1 IS SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF A STONE BARN, AS
 JV4244'DESCRIBED.  REFERENCE MARK 2 IS IN FRONT OF THE MAIN HOUSE, ABOUT 95
 JV4244'FT (29.0 M) EAST-SOUTHEAST OF THE HOUSE, AT THE FENCE THAT SEPARATES
 JV4244'THE YARD FROM THE LIVESTOCK FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0988 ***********************************************************************
 JV0988  DESIGNATION -  FLOG
 JV0988  PID         -  JV0988
 JV0988  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0988  COUNTRY     -  US
 JV0988  USGS QUAD   -  BELTSVILLE (2016)
 JV0988
 JV0988                         *CURRENT SURVEY CONTROL
 JV0988  ______________________________________________________________________
 JV0988* NAD 83(1991) POSITION- 39 01 08.90514(N) 076 55 34.06296(W)   ADJUSTED
 JV0988* NAVD 88 ORTHO HEIGHT -    52.568 (meters)      172.47  (feet) ADJUSTED
 JV0988  ______________________________________________________________________
 JV0988  GEOID HEIGHT    -        -32.129 (meters)                     GEOID18
 JV0988  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 JV0988  DYNAMIC HEIGHT  -         52.541 (meters)      172.38  (feet) COMP
 JV0988  MODELED GRAVITY -    980,105.0   (mgal)                       NAVD 88
 JV0988
 JV0988  HORZ ORDER      -  SECOND
 JV0988  VERT ORDER      -  SECOND    CLASS 0
 JV0988
 JV0988.The horizontal coordinates were established by classical geodetic methods
 JV0988.and adjusted by the National Geodetic Survey in January 1992.
 JV0988
 JV0988.The orthometric height was determined by differential leveling and
 JV0988.adjusted by the NATIONAL GEODETIC SURVEY
 JV0988.in June 1991.
 JV0988
 JV0988.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0988.GEOID18 height accuracy estimate available here.
 JV0988
 JV0988.Click photographs - Photos may exist for this station.
 JV0988
 JV0988.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0988
 JV0988.The dynamic height is computed by dividing the NAVD 88
 JV0988.geopotential number by the normal gravity value computed on the
 JV0988.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0988.degrees latitude (g = 980.6199 gals.).
 JV0988
 JV0988.The modeled gravity was interpolated from observed gravity values.
 JV0988
 JV0988. The following values were computed from the NAD 83(1991) position.
 JV0988
 JV0988;                    North         East     Units Scale Factor Converg.
 JV0988;SPC MD       -   150,133.571   406,397.188   MT  0.99995297   +0 02 46.9
 JV0988;SPC MD       -   492,563.22  1,333,321.44   sFT  0.99995297   +0 02 46.9
 JV0988;UTM  18      - 4,320,665.575   333,251.510   MT  0.99994238   -1 12 46.6
 JV0988
 JV0988!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0988!SPC MD       -   0.99999679  x   0.99995297  =   0.99994976
 JV0988!UTM  18      -   0.99999679  x   0.99994238  =   0.99993917
 JV0988
 JV0988_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3325120665(NAD 83)
 JV0988
 JV0988                          SUPERSEDED SURVEY CONTROL
 JV0988
 JV0988  NAD 83(1986)-  39 01 08.90394(N)    076 55 34.07371(W) AD(       ) 2
 JV0988  NAD 27      -  39 01 08.50889(N)    076 55 35.16616(W) AD(       ) 2
 JV0988  NGVD 29              52.79   (m)          173.2    (f) LEVELING    3  
 JV0988  NGVD 29 (11/26/84)   52.790  (m)          173.20   (f) ADJUSTED    2 0
 JV0988
 JV0988.Superseded values are not recommended for survey control.
 JV0988
 JV0988.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0988.See file dsdata.pdf to determine how the superseded data were derived.
 JV0988
 JV0988_MARKER: DE = TRAVERSE STATION DISK
 JV0988_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0988_STAMPING: FLOG 1958
 JV0988_MARK LOGO: CGS
 JV0988_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0988+STABILITY: SURFACE MOTION
 JV0988
 JV0988  HISTORY     - Date     Condition        Report By
 JV0988  HISTORY     - 1958     MONUMENTED       CGS
 JV0988  HISTORY     - 1958     GOOD             CGS
 JV0988  HISTORY     - 1983     MARK NOT FOUND   LOCENG
 JV0988  HISTORY     - 19910627 MARK NOT FOUND   USPSQD
 JV0988
 JV0988                          STATION DESCRIPTION
 JV0988
 JV0988'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0988'STATION IS LOCATED ABOUT 10.3 MILES NORTH-NORTHEAST OF THE
 JV0988'CENTER OF WASHINGTON, D.C. AND ABOUT 0.15 MILE NORTH OF STATION
 JV0988'GOLF.  THE STATION IS 37 FEET EAST OF APPROXIMATE CENTERLINE OF
 JV0988'U.S. HIGHWAY NO. 1, 55 FEET SOUTH-SOUTHWEST OF APPROXIMATE
 JV0988'CENTERLINE OF DRIVEWAY, 18 FEET NORTHEAST OF A POWERLINE POLE
 JV0988'AND 3 FEET EAST-SOUTHEAST OF A WITNESS POST.  THE MARK IS A
 JV0988'STANDARD TRAVERSE DISK SET IN A 12X12 INCH CONCRETE MONUMENT
 JV0988'FLUSH WITH THE GROUND AND THE DISK IS STAMPED FLOG 1958.
 JV0988'
 JV0988'TO REACH FROM THE RAILROAD STATION IN BELTSVILLE, GO SOUTHERLY
 JV0988'ON U.S. HIGHWAY NO. 1 FOR 1.65 MILES TO DRIVEWAY TO MOTEL ON
 JV0988'LEFT AND STATION AS DESCRIBED.
 JV0988'
 JV0988'THIS STATION WAS TRAVERSED TO FROM TRIANGULATION STATION GULF
 JV0988'AND SERVES AS ITS AZIMUTH MARK.
 JV0988
 JV0988                          STATION RECOVERY (1958)
 JV0988
 JV0988'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV0988'1.6 MI S FROM BELTSVILLE.
 JV0988'ABOUT 1.6 MILES SOUTH ALONG U.S. HIGHWAY 1 FROM THE BALTIMORE AND
 JV0988'OHIO RAILROAD STATION AT BELTSVILLE, NEAR THE ENTRANCE TO THE
 JV0988'STEWARTS MOTEL, 37.2 FEET EAST OF THE CENTER LINE OF THE HIGHWAY,
 JV0988'70.4 FEET NORTHWEST OF THE NORTHWEST CORNER OF A TWO-STORIED
 JV0988'RESIDENCE, (ADDRESS 10041), 17 1/2 FEET NORTHEAST OF POWER LINE
 JV0988'BRACE POLE NO. 854989, 3.3 FEET SOUTHEAST OF A WHITE WOODEN
 JV0988'WITNESS POST AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV0988'THE GROUND, AND ABOUT LEVEL WITH THE HIGHWAY.
 JV0988
 JV0988                          STATION RECOVERY (1983)
 JV0988
 JV0988'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (RKM)
 JV0988'FLOG 1958 NOT RECOVERED.
 JV0988'
 JV0988'STATION WAS PLOTED BY LATITUDE AND LONGITUDE ON ALEXANDRIA DRAFTING
 JV0988'CO COUNTY MAP.  LOCATION SO DETERMINED IS WITHIN CLOVERLEAF OF I-495
 JV0988'US RT 1 INTERSECTION ON SITE SEARCH FOUND ALL REFERENCES.  RR
 JV0988'STATION, MOTEL, AND DRIVEWAY NO LONGER EXIST.
 JV0988'
 JV0988'PRESUME MARKER DESTROYED.
 JV0988
 JV0988                          STATION RECOVERY (1991)
 JV0988
 JV0988'RECOVERY NOTE BY US POWER SQUADRON 1991 (WAY)
 JV0988'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6546 ***********************************************************************
 JV6546  DESIGNATION -  FLOG 2
 JV6546  PID         -  JV6546
 JV6546  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6546  COUNTRY     -  US
 JV6546  USGS QUAD   -  BELTSVILLE (2016)
 JV6546
 JV6546                         *CURRENT SURVEY CONTROL
 JV6546  ______________________________________________________________________
 JV6546* NAD 83(1991) POSITION- 39 01 06.99562(N) 076 55 34.55194(W)   ADJUSTED
 JV6546* NAVD 88 ORTHO HEIGHT -    53.34  (meters)      175.0   (feet) RESET
 JV6546  ______________________________________________________________________
 JV6546  GEOID HEIGHT    -        -32.129 (meters)                     GEOID18
 JV6546  LAPLACE CORR    -         -4.16  (seconds)                    DEFLEC18
 JV6546  HORZ ORDER      -  THIRD
 JV6546  VERT ORDER      -  THIRD
 JV6546
 JV6546.The horizontal coordinates were established by classical geodetic methods
 JV6546.and adjusted by the National Geodetic Survey in January 1992.
 JV6546
 JV6546.The orthometric height was computed from unverified reset data.
 JV6546
 JV6546.No vertical observational check was made to the station.
 JV6546
 JV6546.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6546.GEOID18 height accuracy estimate available here.
 JV6546
 JV6546.Click photographs - Photos may exist for this station.
 JV6546
 JV6546.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6546
 JV6546. The following values were computed from the NAD 83(1991) position.
 JV6546
 JV6546;                    North         East     Units Scale Factor Converg.
 JV6546;SPC MD       -   150,074.679   406,385.473   MT  0.99995294   +0 02 46.6
 JV6546;SPC MD       -   492,370.01  1,333,283.01   sFT  0.99995294   +0 02 46.6
 JV6546;UTM  18      - 4,320,606.955   333,238.504   MT  0.99994244   -1 12 46.8
 JV6546
 JV6546!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6546!SPC MD       -   0.99999667  x   0.99995294  =   0.99994961
 JV6546!UTM  18      -   0.99999667  x   0.99994244  =   0.99993911
 JV6546
 JV6546_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3323820606(NAD 83)
 JV6546
 JV6546                          SUPERSEDED SURVEY CONTROL
 JV6546
 JV6546  NAD 83(1986)-  39 01 06.99437(N)    076 55 34.56267(W) AD(       ) 3
 JV6546  NGVD 29 (11/18/05)   53.57   (m)          175.8    (f) RESET       3  
 JV6546  NGVD 29              53.57   (m)          175.8    (f) LEVELING    3  
 JV6546
 JV6546.Superseded values are not recommended for survey control.
 JV6546
 JV6546.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6546.See file dsdata.pdf to determine how the superseded data were derived.
 JV6546
 JV6546_MARKER: DE = TRAVERSE STATION DISK
 JV6546_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6546_SP_SET: SIDEWALK
 JV6546_STAMPING: FLOG 2 1964
 JV6546_MARK LOGO: CGS
 JV6546_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6546_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6546_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6546+SATELLITE: SATELLITE OBSERVATIONS - July 04, 2008
 JV6546
 JV6546  HISTORY     - Date     Condition        Report By
 JV6546  HISTORY     - 1964     MONUMENTED       MDDT
 JV6546  HISTORY     - 19850910 GOOD             NGS
 JV6546  HISTORY     - 19910627 GOOD             USPSQD
 JV6546  HISTORY     - 20080704 GOOD             NGS
 JV6546
 JV6546                          STATION DESCRIPTION
 JV6546
 JV6546'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1964
 JV6546'IN COLLEGE PARK.
 JV6546'THE MARK IS 0.5 M ABOVE U.S. HIGHWAY 1.
 JV6546'IN THE NORTH END OF THE EAST SIDEWALK FOR THE OVERHEAD BRIDGE WHERE
 JV6546'U.S. HIGHWAY 1 PASSES OVER INTERSTATE HIGHWAY 495, 6.9 M (22.6 FT)
 JV6546'EAST FROM THE CENTER OF U.S. HIGHWAY 1 AND 2.7 M (8.9 FT) SOUTH FROM
 JV6546'THE NORTH END OF THE BRIDGE.
 JV6546
 JV6546                          STATION RECOVERY (1985)
 JV6546
 JV6546'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985
 JV6546'THIS MARK WAS FOUND IN GOOD CONDITION BUT NO DATA FOR IT WAS AVAILABLE
 JV6546'AT THIS DATE.
 JV6546'A COMPLETE NEW DESCRIPTION OF THIS STATION FOLLOWS.
 JV6546'THE STATION IS LOCATED ABOUT 16.1 KM (10.00 MI) NORTH-NORTHEAST OF THE
 JV6546'CENTER OF THE DISTRICT OF COLUMBIA, IN THE NORTH EDGE OF COLLEGE PARK
 JV6546'AND IN THE NORTH END OF THE EAST SIDEWALK OF A BRIDGE WHERE U.S.
 JV6546'HIGHWAY 1 CROSSES OVER INTERSTATE HIGHWAY 495.  OWNERSHIP--ROAD
 JV6546'RIGHT-OF-WAY.
 JV6546'THE LOCATION OF THIS STATION ALSO SERVES AS A TO REACH.
 JV6546'THE DISK PROJECTS ABOUT 0.15 M (0.5 FT) ABOVE THE ROAD.  IT IS 2.67 M
 JV6546'(8.8 FT) SOUTH OF THE NORTH END OF THE BRIDGE AND 6.9 M (22.6 FT) EAST
 JV6546'OF THE CENTER OF U.S. HIGHWAY 1.
 JV6546
 JV6546                          STATION RECOVERY (1991)
 JV6546
 JV6546'RECOVERY NOTE BY US POWER SQUADRON 1991 (WAY)
 JV6546'RECOVERED IN GOOD CONDITION.
 JV6546
 JV6546                          STATION RECOVERY (2008)
 JV6546
 JV6546'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV6546'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2569 ***********************************************************************
 DR2569  DESIGNATION -  FLOOD
 DR2569  PID         -  DR2569
 DR2569  STATE/COUNTY-  MD/WASHINGTON
 DR2569  COUNTRY     -  US
 DR2569  USGS QUAD   -  HANCOCK (2016)
 DR2569
 DR2569                         *CURRENT SURVEY CONTROL
 DR2569  ______________________________________________________________________
 DR2569* NAD 83(1986) POSITION- 39 41 52.3    (N) 078 10 40.6    (W)   HD_HELD2
 DR2569* NAVD 88 ORTHO HEIGHT -   131.218 (meters)      430.50  (feet) ADJUSTED
 DR2569  ______________________________________________________________________
 DR2569  GEOID HEIGHT    -        -34.030 (meters)                     GEOID18
 DR2569  DYNAMIC HEIGHT  -        131.142 (meters)      430.26  (feet) COMP
 DR2569  MODELED GRAVITY -    980,051.9   (mgal)                       NAVD 88
 DR2569
 DR2569  VERT ORDER      -  FIRST     CLASS II
 DR2569
 DR2569.The horizontal coordinates were established by autonomous hand held GPS
 DR2569.observations and have an estimated accuracy of +/- 10 meters.
 DR2569
 DR2569.The orthometric height was determined by differential leveling and
 DR2569.adjusted by the NATIONAL GEODETIC SURVEY
 DR2569.in July 2019.
 DR2569
 DR2569.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2569.GEOID18 height accuracy estimate available here.
 DR2569
 DR2569.Click photographs - Photos may exist for this station.
 DR2569
 DR2569.The dynamic height is computed by dividing the NAVD 88
 DR2569.geopotential number by the normal gravity value computed on the
 DR2569.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR2569.degrees latitude (g = 980.6199 gals.).
 DR2569
 DR2569.The modeled gravity was interpolated from observed gravity values.
 DR2569
 DR2569;                    North         East    Units  Estimated Accuracy
 DR2569;SPC MD       -   226,135.      298,966.      MT  (+/- 10 meters HH2 GPS)
 DR2569
 DR2569_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD4196698031(NAD 83)
 DR2569
 DR2569                          SUPERSEDED SURVEY CONTROL
 DR2569
 DR2569.No superseded survey control is available for this station.
 DR2569
 DR2569_MARKER: DB = BENCH MARK DISK
 DR2569_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 DR2569_SP_SET: GAGING STATION PIER
 DR2569_STAMPING: FLOOD MARK MARCH 18 1936
 DR2569_MARK LOGO: USGS
 DR2569_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR2569+STABILITY: SURFACE MOTION
 DR2569_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DR2569+SATELLITE: SATELLITE OBSERVATIONS - October 09, 2020
 DR2569
 DR2569  HISTORY     - Date     Condition        Report By
 DR2569  HISTORY     - UNK      MONUMENTED       USGS
 DR2569  HISTORY     - 20110624 GOOD             MDSHA
 DR2569  HISTORY     - 20201009 GOOD             WTBALL
 DR2569
 DR2569                          STATION DESCRIPTION
 DR2569
 DR2569'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2011 (TPB)
 DR2569'THE MARK IS LOCATED ABOUT 10.0 MI (16.1 KM) WEST-NORTHWEST OF BIG
 DR2569'POOL, 8.6 MI (13.8 KM) EAST OF BELLEGROVE AND IN THE TOWN OF HANCOCK,
 DR2569'MD.
 DR2569'
 DR2569'TO REACH FROM THE I-70 WESTBOUND OFF RAMP AND MD 144, GO WEST ON MD
 DR2569'144 FOR 1.36 MI (2.19 KM) TO AN INTERSECTION.  TURN LEFT AND GO SOUTH
 DR2569'ON CHURCH STREET FOR 0.02 MI (0.03 KM) TO A PARKING LOT.  PARK VEHICLE
 DR2569'AND WALK SOUTH FOR ABOUT 200 FT (61.0 M), CROSSING OVER AN OLD BRIDGE
 DR2569'OVER THE C AND O CANAL TO THE WEST END OF A STEEL WALKWAY TO A USGS
 DR2569'STREAM GAGING STATION AND THE MARK, SET VERTICALLY IN THE FACE OF THE
 DR2569'PIER ABOUT 1 FT (0.3 M) HIGHER THAN THE GROUND.
 DR2569'
 DR2569'IT IS 139.6 FT (42.6 M) SOUTHEAST OF C AND P POLE NUMBER 1, 32.0 FT
 DR2569'(9.8 M) SOUTH OF THE SOUTHEAST CORNER OF THE BRIDGE OVER THE C AND O
 DR2569'CANAL, 31.3 FT (9.5 M) SOUTH OF A WING WALL, 17.0 FT (5.2 M) EAST OF
 DR2569'THE CENTERLINE OF THE BRIDGE, 15.2 FT (4.6 M) WEST OF C AND P
 DR2569'TELEPHONE POLE NUMBER 3.
 DR2569
 DR2569                          STATION RECOVERY (2020)
 DR2569
 DR2569'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 DR2569'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5711 ***********************************************************************
 JV5711  DESIGNATION -  FLOOD HB
 JV5711  PID         -  JV5711
 JV5711  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5711  COUNTRY     -  US
 JV5711  USGS QUAD   -  CURTIS BAY (2016)
 JV5711
 JV5711                         *CURRENT SURVEY CONTROL
 JV5711  ______________________________________________________________________
 JV5711* NAD 83(1991) POSITION- 39 12 56.63194(N) 076 34 43.24960(W)   ADJUSTED
 JV5711* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5711  ______________________________________________________________________
 JV5711  GEOID HEIGHT    -        -32.904 (meters)                     GEOID18
 JV5711  LAPLACE CORR    -         -4.41  (seconds)                    DEFLEC18
 JV5711  HORZ ORDER      -  THIRD
 JV5711
 JV5711.The horizontal coordinates were established by classical geodetic methods
 JV5711.and adjusted by the National Geodetic Survey in January 1992.
 JV5711
 JV5711.The orthometric height was scaled from a topographic map.
 JV5711
 JV5711.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5711.GEOID18 height accuracy estimate available here.
 JV5711
 JV5711.Click photographs - Photos may exist for this station.
 JV5711
 JV5711.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5711
 JV5711. The following values were computed from the NAD 83(1991) position.
 JV5711
 JV5711;                    North         East     Units Scale Factor Converg.
 JV5711;SPC MD       -   172,039.116   436,384.993   MT  0.99996741   +0 15 52.0
 JV5711;SPC MD       -   564,431.67  1,431,706.43   sFT  0.99996741   +0 15 52.0
 JV5711;UTM  18      - 4,341,904.193   363,711.878   MT  0.99982871   -0 59 53.7
 JV5711
 JV5711!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5711!SPC MD       -   1.00000520  x   0.99996741  =   0.99997261
 JV5711!UTM  18      -   1.00000520  x   0.99982871  =   0.99983391
 JV5711
 JV5711:                Primary Azimuth Mark                     Grid Az
 JV5711:SPC MD       -  CURTIS                                   206 51 32.5
 JV5711:UTM  18      -  CURTIS                                   208 07 18.2
 JV5711
 JV5711_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6371141904(NAD 83)
 JV5711
 JV5711|---------------------------------------------------------------------|
 JV5711| PID    Reference Object                     Distance      Geod. Az  |
 JV5711|                                                           dddmmss.s |
 JV5711| JV5720 WAGNERS CHURCH SPIRE                APPROX. 1.9 KM 0254245.2 |
 JV5711| JV5701 CURTIS                              APPROX. 0.7 KM 2070724.5 |
 JV5711| JV5680 CABIN USE 1916                      295.260 METERS 22832     |
 JV5711| CA9432 FLOOD HB RM                          12.901 METERS 31010     |
 JV5711|---------------------------------------------------------------------|
 JV5711
 JV5711                          SUPERSEDED SURVEY CONTROL
 JV5711
 JV5711  NAD 83(1986)-  39 12 56.62823(N)    076 34 43.25896(W) AD(       ) 3
 JV5711  NAD 27      -  39 12 56.24000(N)    076 34 44.38400(W) AD(       ) 3
 JV5711  USSD        -  39 12 56.60400(N)    076 34 44.22500(W) AD(       ) 3
 JV5711
 JV5711.Superseded values are not recommended for survey control.
 JV5711
 JV5711.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5711.See file dsdata.pdf to determine how the superseded data were derived.
 JV5711
 JV5711
 JV5711  HISTORY     - Date     Condition        Report By
 JV5711  HISTORY     - 1915     MONUMENTED       LOCENG
 JV5711
 JV5711                          STATION DESCRIPTION
 JV5711
 JV5711'DESCRIBED BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1915 (EWE)
 JV5711'ON FERRY POINT, ON THE W SIDE OF CURTIS BAY, ABOUT 1/2 MILE N
 JV5711'OF BRIDGE OVER CURTIS CREEK, AND ON THE SANDY BEACH AT ENTRANCE
 JV5711'TO CABIN BRANCH.  STATION MARK NOT KNOWN.  STANDARD BRONZE DISK
 JV5711'REFERENCE MARK WAS PLACED INSHORE FROM THE STATION AND ON A
 JV5711'GRASSY PLOT.  IT IS 12.901 METERS (42.33 FEET) FROM THE STATION
 JV5711'N 49 DEG 50 MIN W.  IN 1924 THE STATION HAD PERHAPS BEEN
 JV5711'LOST ON ACCOUNT OF FILLING AND THE PLACING OF AN OIL TANK IN
 JV5711'THE VICINITY.  IT MAY POSSIBLY BE RECOVERED BY DIGGING ABOUT
 JV5711'4 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4207 ***********************************************************************
 JV4207  DESIGNATION -  FLORENCE
 JV4207  PID         -  JV4207
 JV4207  STATE/COUNTY-  MD/HOWARD
 JV4207  COUNTRY     -  US
 JV4207  USGS QUAD   -  WOODBINE (2016)
 JV4207
 JV4207                         *CURRENT SURVEY CONTROL
 JV4207  ______________________________________________________________________
 JV4207* NAD 83(1991) POSITION- 39 18 48.61757(N) 077 06 45.32490(W)   ADJUSTED
 JV4207* NAVD 88 ORTHO HEIGHT -   215.    (meters)      705.    (feet) SCALED
 JV4207  ______________________________________________________________________
 JV4207  GEOID HEIGHT    -        -31.833 (meters)                     GEOID18
 JV4207  LAPLACE CORR    -         -0.13  (seconds)                    DEFLEC18
 JV4207  HORZ ORDER      -  THIRD
 JV4207
 JV4207.The horizontal coordinates were established by classical geodetic methods
 JV4207.and adjusted by the National Geodetic Survey in January 1992.
 JV4207
 JV4207.The orthometric height was scaled from a topographic map.
 JV4207
 JV4207.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4207.GEOID18 height accuracy estimate available here.
 JV4207
 JV4207.Click photographs - Photos may exist for this station.
 JV4207
 JV4207.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4207
 JV4207. The following values were computed from the NAD 83(1991) position.
 JV4207
 JV4207;                    North         East     Units Scale Factor Converg.
 JV4207;SPC MD       -   182,815.745   390,290.105   MT  0.99997897   -0 04 14.4
 JV4207;SPC MD       -   599,787.99  1,280,476.79   sFT  0.99997897   -0 04 14.4
 JV4207;UTM  18      - 4,353,695.368   317,868.890   MT  1.00000844   -1 20 19.8
 JV4207
 JV4207!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4207!SPC MD       -   0.99997130  x   0.99997897  =   0.99995027
 JV4207!UTM  18      -   0.99997130  x   1.00000844  =   0.99997974
 JV4207
 JV4207:                Primary Azimuth Mark                     Grid Az
 JV4207:SPC MD       -  FLORENCE AZ MK                           134 15 00.2
 JV4207:UTM  18      -  FLORENCE AZ MK                           135 31 05.6
 JV4207
 JV4207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1786853695(NAD 83)
 JV4207
 JV4207|---------------------------------------------------------------------|
 JV4207| PID    Reference Object                     Distance      Geod. Az  |
 JV4207|                                                           dddmmss.s |
 JV4207| JV6060 W FRIENDSHIP MCKENDREE METH CH      APPROX.10.0 KM 0901902.6 |
 JV4207| CJ9794 FLORENCE AZ MK                                     1341045.8 |
 JV4207| CJ9795 FLORENCE RM 1                        26.721 METERS 15701     |
 JV4207| CJ9796 FLORENCE RM 2                        27.790 METERS 26519     |
 JV4207|---------------------------------------------------------------------|
 JV4207
 JV4207                          SUPERSEDED SURVEY CONTROL
 JV4207
 JV4207  NAD 83(1986)-  39 18 48.61742(N)    077 06 45.33359(W) AD(       ) 3
 JV4207  NAD 27      -  39 18 48.24165(N)    077 06 46.39909(W) AD(       ) 3
 JV4207
 JV4207.Superseded values are not recommended for survey control.
 JV4207
 JV4207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4207.See file dsdata.pdf to determine how the superseded data were derived.
 JV4207
 JV4207_MARKER: DS = TRIANGULATION STATION DISK
 JV4207_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4207_STAMPING: FLORENCE 1943
 JV4207_MARK LOGO: CGS
 JV4207_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4207+STABILITY: SURFACE MOTION
 JV4207_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4207+SATELLITE: SATELLITE OBSERVATIONS - November 20, 2011
 JV4207
 JV4207  HISTORY     - Date     Condition        Report By
 JV4207  HISTORY     - 1943     MONUMENTED       CGS
 JV4207  HISTORY     - 1953     GOOD             CGS
 JV4207  HISTORY     - 20111120 GOOD             GEOCAC
 JV4207
 JV4207                          STATION DESCRIPTION
 JV4207
 JV4207'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4207'THE STATION IS LOCATED ON A WOODED RIDGE LYING ABOUT 1.5 MILES S
 JV4207'AND 2.2 MILES W OF THE VILLAGE OF LISBON ON LAND OWNED BY
 JV4207'W.S. BLACK.  IT IS SITUATED AT THE SE EDGE OF A WOODS, 14 FEET
 JV4207'NW OF THE PROJECTED PLANE OF THE SE SIDE OF THE HOUSE AND 49 FEET
 JV4207'NE OF THE CENTER OF THE MACADAM ROAD, 32 FEET WNW OF THE CENTER
 JV4207'OF A WOODS ROAD, AND 38.4 FEET W OF A TWIN OAK TREE.  IT IS
 JV4207'STAMPED FLORENCE 1943 AND PROJECTS 12 INCHES.
 JV4207'
 JV4207'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV4207'DISKS SET IN CONCRETE.
 JV4207'
 JV4207'REFERENCE MARK NO.1 IS SSE OF THE STATION, 13 FEET WNW OF A
 JV4207'POWER-LINE POLE, 16 FEET NE OF THE CENTER OF THE ROAD.  IT IS
 JV4207'STAMPED FLORENCE NO.1 1943 AND PROJECTS 6 INCHES.
 JV4207'
 JV4207'REFERENCE MARK NO.2 IS W OF THE STATION, 21.4 FEET W OF THE CENTER
 JV4207'OF THE MACADAM ROAD, 31 FEET NW OF A DRIVEWAY AND 5 FEET E OF A
 JV4207'FENCE CORNER.  IT IS STAMPED FLORENCE NO.2 1943 AND IS FLUSH
 JV4207'WITH THE SURFACE OF THE GROUND.
 JV4207'
 JV4207'THE AZIMUTH MARK IS 0.75 MILE SE OF THE STATION IN THE NW
 JV4207'SECTION OF THE SCHOOLYARD.  IT IS 1 FOOT S OF A FENCE LINE, 29.4
 JV4207'FEET NE OF THE FENCE CORNER, 32.5 FEET N OF A 2-FOOT OAK TREE, 11.6
 JV4207'FEET W OF AN 8-INCH HICKORY TREE.  IT IS STAMPED FLORENCE 1943 AND
 JV4207'PROJECTS 6 INCHES.  TO REACH FROM THE STATION GO SE FOR 0.3 MILE
 JV4207'TO STATE HIGHWAY 94.  CROSS HIGHWAY 94 AND CONTINUE STRAIGHT
 JV4207'AHEAD ON A DIRT ROAD FOR 0.45 MILE TO THE SCHOOLHOUSE AND THE
 JV4207'AZIMUTH MARK ON THE LEFT.
 JV4207'
 JV4207'TO REACH THE STATION FROM THE POST OFFICE IN LISBON, GO W ON
 JV4207'U.S. HIGHWAY 40 FOR 0.2 MILE.  THENCE LEFT ON STATE HIGHWAY 94 FOR
 JV4207'2.6 MILES TO A CROSSROADS AND A STORE.  TURN RIGHT ON MACADAM ROAD
 JV4207'AND GO 0.3 MILE TO THE TOP OF THE RIDGE AND THE STATION.
 JV4207'
 JV4207'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT COOK.
 JV4207'
 JV4207'A 100-FOOT LIGHT AT DAYTON IS VISIBLE FROM THE GROUND.
 JV4207'
 JV4207'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT DAMASCUS.
 JV4207'
 JV4207'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV4207
 JV4207                          STATION RECOVERY (1953)
 JV4207
 JV4207'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (EWM)
 JV4207'STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV4207'
 JV4207'SCHOOLHOUSE MENTIONED IN PREVIOUS DESCRIPTION IS NOW A PRIVATE
 JV4207'DWELLING.
 JV4207
 JV4207                          STATION RECOVERY (2011)
 JV4207
 JV4207'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JV4207'STATION RECOVERED AS DESCRIBED. RM1, RM2, AZ MARK NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4352 ***********************************************************************
 JV4352  DESIGNATION -  FLOYD PB PP
 JV4352  PID         -  JV4352
 JV4352  STATE/COUNTY-  MD/MONTGOMERY
 JV4352  COUNTRY     -  US
 JV4352  USGS QUAD   -  ROCKVILLE (2016)
 JV4352
 JV4352                         *CURRENT SURVEY CONTROL
 JV4352  ______________________________________________________________________
 JV4352* NAD 83(1993) POSITION- 39 00 19.81257(N) 077 14 01.09252(W)   ADJUSTED
 JV4352* NAVD 88 ORTHO HEIGHT -   114.    (meters)      374.    (feet) SCALED
 JV4352  ______________________________________________________________________
 JV4352  GEOID HEIGHT    -        -31.716 (meters)                     GEOID18
 JV4352  LAPLACE CORR    -         -0.04  (seconds)                    DEFLEC18
 JV4352  HORZ ORDER      -  SECOND
 JV4352
 JV4352.The horizontal coordinates were established by classical geodetic methods
 JV4352.and adjusted by the National Geodetic Survey in November 1994.
 JV4352
 JV4352.The orthometric height was scaled from a topographic map.
 JV4352
 JV4352.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4352.GEOID18 height accuracy estimate available here.
 JV4352
 JV4352.Click photographs - Photos may exist for this station.
 JV4352
 JV4352.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4352
 JV4352. The following values were computed from the NAD 83(1993) position.
 JV4352
 JV4352;                    North         East     Units Scale Factor Converg.
 JV4352;SPC MD       -   148,643.048   379,763.437   MT  0.99995240   -0 08 47.9
 JV4352;SPC MD       -   487,673.07  1,245,940.54   sFT  0.99995240   -0 08 47.9
 JV4352;SPC VA N     - 2,149,368.712 3,609,685.360   MT  0.99997127   +0 47 25.3
 JV4352;SPC VA N     - 7,051,720.52 11,842,776.05   sFT  0.99997127   +0 47 25.3
 JV4352;UTM  18      - 4,319,760.784   306,590.169   MT  1.00006063   -1 24 22.6
 JV4352
 JV4352!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4352!SPC MD       -   0.99998713  x   0.99995240  =   0.99993953
 JV4352!SPC VA N     -   0.99998713  x   0.99997127  =   0.99995840
 JV4352!UTM  18      -   0.99998713  x   1.00006063  =   1.00004776
 JV4352
 JV4352:                Primary Azimuth Mark                     Grid Az
 JV4352:SPC MD       -  CLUB PB PP 1930                          202 35 28.4
 JV4352:SPC VA N     -  CLUB PB PP 1930                          201 39 15.2
 JV4352:UTM  18      -  CLUB PB PP 1930                          203 51 03.1
 JV4352
 JV4352_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0659019760(NAD 83)
 JV4352
 JV4352|---------------------------------------------------------------------|
 JV4352| PID    Reference Object                     Distance      Geod. Az  |
 JV4352|                                                           dddmmss.s |
 JV4352| HV4845 CLUB PB PP 1930                     APPROX. 1.1 KM 2022640.5 |
 JV4352|---------------------------------------------------------------------|
 JV4352
 JV4352                          SUPERSEDED SURVEY CONTROL
 JV4352
 JV4352  NAD 83(1991)-  39 00 19.81205(N)    077 14 01.09400(W) AD(       ) 2
 JV4352  NAD 83(1986)-  39 00 19.81222(N)    077 14 01.10333(W) AD(       ) 2
 JV4352  NAD 27      -  39 00 19.41700(N)    077 14 02.17100(W) AD(       ) 2
 JV4352
 JV4352.Superseded values are not recommended for survey control.
 JV4352
 JV4352.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4352.See file dsdata.pdf to determine how the superseded data were derived.
 JV4352
 JV4352_MARKER: DD = SURVEY DISK
 JV4352_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4352_MARK LOGO: PBPP
 JV4352_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4352
 JV4352  HISTORY     - Date     Condition        Report By
 JV4352  HISTORY     - 1931     MONUMENTED       PBPP
 JV4352  HISTORY     - 1956     MARK NOT FOUND   USGS
 JV4352
 JV4352                          STATION DESCRIPTION
 JV4352
 JV4352'DESCRIBED BY PUB BLDGS AND PARKS 1931
 JV4352'STATION IS LOCATED ON THE MARYLAND SIDE OF THE POTOMAC RIVER,
 JV4352'ABOUT 1.3 MILES FROM INTERSECTION OF POTOMAC ROAD AND GREAT
 JV4352'FALLS-WASHINGTON HIGHWAY, ON HIGH BARE RIDGE OF LAND OWNED BY
 JV4352'FLOYD.
 JV4352'
 JV4352'SURFACE AND AZIMUTH MARKS ARE STANDARD U.S.P.B. AND P.P. BRASS
 JV4352'DISKS SET IN 24-INCH TERRA COTTA PIPE FILLED WITH
 JV4352'CONCRETE.  UNDERGROUND MARK IS A BRASS PLUG SET IN 6 INCHES OF
 JV4352'CONCRETE.
 JV4352'
 JV4352'ENTRANCE TO STATION GAINED BY TURNING ONTO POTOMAC ROAD FROM
 JV4352'GREAT FALLS-WASHINGTON HIGHWAY ABOUT 1.5 MILES FROM GREAT
 JV4352'FALLS.  THENCE ALONG POTOMAC ROAD ABOUT 0.70 MILE TURNING LEFT
 JV4352'AT FIRST DIRT ROAD, AND CONTINUING ALONG DIRT ROAD TO FRAME
 JV4352'CHURCH, TURNING LEFT AT CHURCH AND INTO LANE LEADING INTO FLOYDS
 JV4352'RESIDENCE, THENCE ALONG LANE TO WHITE FRAME HOUSE ON RIDGE.
 JV4352
 JV4352                          STATION RECOVERY (1956)
 JV4352
 JV4352'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956
 JV4352'SEARCHED FOR NOT FOUND AFTER ONE HOUR.  DESCRIPTION INADEQUATE
 JV4352'AND AREA HAS HEAVY UNDERGROWTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7332 ***********************************************************************
 HV7332  DESIGNATION -  FODDER
 HV7332  PID         -  HV7332
 HV7332  STATE/COUNTY-  MD/CHARLES
 HV7332  COUNTRY     -  US
 HV7332  USGS QUAD   -  BENEDICT (2016)
 HV7332
 HV7332                         *CURRENT SURVEY CONTROL
 HV7332  ______________________________________________________________________
 HV7332* NAD 83(1993) POSITION- 38 32 02.70838(N) 076 41 08.67740(W)   ADJUSTED
 HV7332* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7332  ______________________________________________________________________
 HV7332  GEOID HEIGHT    -        -33.638 (meters)                     GEOID18
 HV7332  LAPLACE CORR    -         -3.91  (seconds)                    DEFLEC18
 HV7332  HORZ ORDER      -  SECOND
 HV7332
 HV7332.The horizontal coordinates were established by classical geodetic methods
 HV7332.and adjusted by the National Geodetic Survey in November 1994.
 HV7332
 HV7332.The orthometric height was scaled from a topographic map.
 HV7332
 HV7332.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7332.GEOID18 height accuracy estimate available here.
 HV7332
 HV7332.Click photographs - Photos may exist for this station.
 HV7332
 HV7332.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7332
 HV7332. The following values were computed from the NAD 83(1993) position.
 HV7332
 HV7332;                    North         East     Units Scale Factor Converg.
 HV7332;SPC MD       -    96,334.093   427,399.577   MT  0.99996753   +0 11 50.1
 HV7332;SPC MD       -   316,056.10  1,402,226.78   sFT  0.99996753   +0 11 50.1
 HV7332;UTM  18      - 4,266,422.396   353,071.237   MT  0.99986586   -1 03 01.3
 HV7332
 HV7332!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7332!SPC MD       -   1.00000516  x   0.99996753  =   0.99997269
 HV7332!UTM  18      -   1.00000516  x   0.99986586  =   0.99987102
 HV7332
 HV7332:                Primary Azimuth Mark                     Grid Az
 HV7332:SPC MD       -  PRINCE 2                                 024 48 46.0
 HV7332:UTM  18      -  PRINCE 2                                 026 03 37.4
 HV7332
 HV7332_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5307166422(NAD 83)
 HV7332
 HV7332|---------------------------------------------------------------------|
 HV7332| PID    Reference Object                     Distance      Geod. Az  |
 HV7332|                                                           dddmmss.s |
 HV7332| HV7343 PRINCE 2                            APPROX. 0.8 KM 0250036.1 |
 HV7332| CX2773 FODDER RM 1                           9.555 METERS 18040     |
 HV7332| CX2772 FODDER RM                            15.210 METERS 24053     |
 HV7332| CX2774 FODDER RM 2                           8.478 METERS 29410     |
 HV7332|---------------------------------------------------------------------|
 HV7332
 HV7332                          SUPERSEDED SURVEY CONTROL
 HV7332
 HV7332  NAD 83(1991)-  38 32 02.70834(N)    076 41 08.67876(W) AD(       ) 2
 HV7332  NAD 83(1986)-  38 32 02.70735(N)    076 41 08.69299(W) AD(       ) 2
 HV7332  NAD 27      -  38 32 02.26500(N)    076 41 09.83300(W) AD(       ) 2
 HV7332  USSD        -  38 32 02.62100(N)    076 41 09.58800(W) AD(       ) 3
 HV7332
 HV7332.Superseded values are not recommended for survey control.
 HV7332
 HV7332.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7332.See file dsdata.pdf to determine how the superseded data were derived.
 HV7332
 HV7332_MARKER: H = DRILL HOLE
 HV7332_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7332
 HV7332  HISTORY     - Date     Condition        Report By
 HV7332  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7332  HISTORY     - 1936     MARK NOT FOUND   USGS
 HV7332  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV7332  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV7332  HISTORY     - 1953     MARK NOT FOUND   USGS
 HV7332
 HV7332                          STATION DESCRIPTION
 HV7332
 HV7332'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7332'ON THE WESTERN SHORE OF PATUXENT RIVER, ON THE SOUTHERN SIDE OF
 HV7332'THE MOUTH OF SWANSON CREEK, ABOUT 1 MILE WEST-SOUTHWEST OF LEITCH
 HV7332'WHARF AND 3/4 MILE WEST-NORTHWEST OF POINT JUDITH (LOCALLY KNOWN
 HV7332'AS TEAGUE POINT).  STATION IS ON EDGE OF CULTIVATED LAND, ABOUT 10
 HV7332'FEET ABOVE HIGH WATER, 4 YARDS WEST OF ONE EDGE OF BANK, AND 9
 HV7332'YARDS NORTH OF ANOTHER EDGE.
 HV7332'
 HV7332'STATION MARK IS CENTER OF STANDARD CEMENT MONUMENT OF MARYLAND
 HV7332'SHELL FISH SURVEY WITH TOP 9 INCHES SQUARE AND 8 INCHES ABOVE
 HV7332'SURFACE OF GROUND.
 HV7332'
 HV7332'REFERENCE MARK IS CENTER OF STANDARD CEMENT MONUMENT OF MARYLAND
 HV7332'SHELL FISH SURVEY WITH TOP 5 INCHES ABOVE SURFACE OF GROUND.  IT
 HV7332'IS 15.21 METERS (49.9 FEET) FROM STATION IN BEARING S 60 DEG 53
 HV7332'MIN W.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE
 HV7332'AS FOLLOWS--LARGE CHIMNEY OF SMALL HOUSE, 1 MILE, S 19 DEG 44 MIN
 HV7332'W. LEFT SIDE OF LEFT CHIMNEY OUTSIDE OF BOWLING HOUSE, 3/4 MILE,
 HV7332'S 56 DEG 48 MIN W.  LEFT CORNER OF HOUSE ON TOP OF HILL, 1 MILE,
 HV7332'N 16 DEG 32 MIN W.  NEAR PEAK OF LARGE HOUSE ON BLUFF, 2 MILES, N
 HV7332'42 DEG 56 MIN E.  RIGHT CORNER OF HOUSE, 1-3/4 MILES, N 49 DEG 9
 HV7332'MIN E.  NEAR PEAK OF LEITCH WHARF HOUSE, 1-1/4 MILES, N 60 DEG 11
 HV7332'MIN E.  LEFT PEAK OF LEITCH HOUSE, 1-1/4 MILES, N 73 DEG 38 MIN E.
 HV7332'FRONT PEAK OF HOUSE AT BUENA VISTA, 1-1/4 MILES, S 79 DEG 59 MIN
 HV7332'E.  CHIMNEY OUTSIDE LEFT END OF HOUSE ON HILL, 2 MILES, S 67 DEG
 HV7332'43 MIN E.  NEAR PEAK OF SMALL HOUSE, 3/8 MILE, S 53 DEG 26 MIN E.
 HV7332
 HV7332                          STATION RECOVERY (1936)
 HV7332
 HV7332'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1936
 HV7332'DESTROYED BY FLOOD.
 HV7332
 HV7332                          STATION RECOVERY (1942)
 HV7332
 HV7332'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV7332'REFERENCE MARK RECOVERED INTACT, STATION MARK (ALSO STANDARD
 HV7332'MDSFCMONUMENT) WAS FOUND LYING AT FOOT OF BANK, (WAS LEFT SETTING
 HV7332'ON TOP OF R.M.).
 HV7332'
 HV7332'REACHED FROM HUGHESVILLE BY GOING NORTHEAST ON PATUXENT ROAD FOR
 HV7332'2.15 MILES, TAKE RIGHT FORK (BENEDICT ROAD), GO 0.85 MILE, TURN
 HV7332'RIGHT ON GRAVEL ROAD, (SCHOOL HOUSE ON RIGHT) GO 2.25 MILES, TAKE
 HV7332'LEFT FORK, GO 0.2 MILE, KEEP LEFT OR STRAIGHT AHEAD AT BARNS, GO
 HV7332'0.25 MILE, KEEP STRAIGHT AHEAD, DOWNHILL, AT FARM HOUSE, GO 0.15
 HV7332'MILE, GO THROUGH LEFT HAND GATE, GO 0.35 MILE, AND BEAR LEFT
 HV7332'ACROSS FIELD ABOUT .05 MILE TO SHORE AND STATION. THE REMAINING
 HV7332'MONUMENT IS NOW ONLY 1.5 FEET FROM EDGE OF BANK AND WILL SOON BE
 HV7332'ERODED AWAY.
 HV7332
 HV7332                          STATION RECOVERY (1943)
 HV7332
 HV7332'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7332'FODDER R.M. (MSFC) IS LOCATED ON THE WESTERN SHORE OF THE PATUXENT
 HV7332'RIVER, ON THE SOUTHERN SIDE OF THE MOUTH OF SWANSON CREEK, ABOUT 1
 HV7332'MILE WEST SOUTHWEST OF LEITCH WHARF AND 3/4 OF A MILE WEST
 HV7332'NORTHWEST OF POINT JUDITH.  IT IS 50 FEET WEST OF HIGH WATER MARK
 HV7332'AND 2 FEET WEST OF THE EDGE OF THE BANK.  IT IS A STANDARD
 HV7332'MARYLAND SHELL FISH SURVEY MONUMENT.  COUNTERSUNK IN THE TOP ARE
 HV7332'THE LETTERS MDSFCAND USCS.  THE MONUMENT PROJECTS 5 INCHES.
 HV7332'
 HV7332'REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE AS DESCRIBED.
 HV7332'
 HV7332'REFERENCE MARK NO. 1 IS SOUTH OF THE STATION, AT THE EAST EDGE OF
 HV7332'A CULTIVATED FIELD, AND 6-1/2 FEET WEST SOUTHWEST OF THE EDGE OF
 HV7332'THE BANK.  IT IS STAMPED FODDER NO. 1 1943 AND PROJECTS 5 INCHES.
 HV7332'
 HV7332'REFERENCE MARK NO. 2 IS WEST NORTHWEST OF THE STATION, AT THE EAST
 HV7332'EDGE OF A CULTIVATED FIELD AND 13 FEET SOUTHWEST OF THE EDGE OF
 HV7332'THE BANK.  IT IS STAMPED FODDER NO. 2 1943 AND PROJECTS 6 INCHES.
 HV7332'
 HV7332'THE AZIMUTH MARK IS STATION PRINCE 2.
 HV7332'
 HV7332'TO REACH FODDER R.M. (MSFC) FROM HUGHESVILLE, GO NORTHEAST ON THE
 HV7332'PATUXENT ROAD FOR 2.1 MILES TO A FORKS.  TAKE THE RIGHT FORK,
 HV7332'(BENEDICT ROAD), AND GO 0.85 MILE TO A LONE CEDAR TREE AND A
 HV7332'T-ROAD LEFT.  TURN LEFT AND GO 2.25 MILES TO A FORKS. TAKE THE
 HV7332'LEFT FORK AND GO 0.2 MILE TO AN OLD BARN.  CONTINUE STRAIGHT AHEAD
 HV7332'FOR 0.25 MILES TO FARM BUILDINGS, CONTINUE STRAIGHT AHEAD ON FARM
 HV7332'ROAD (DOWN HILL) FOR 0.15 MILE TO A DOUBLE GATE. PASS THROUGH THE
 HV7332'LEFT GATE AND GO 0.35 MILE.  TURN LEFT AND GO 0.05 MILE TO THE
 HV7332'EDGE OF THE BANK AND THE STATION AS DESCRIBED.
 HV7332'
 HV7332'A 4-FOOT STAND WILL SEE A 100-FOOT LIGHT AT STATION DOWELL.
 HV7332'
 HV7332'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT STATION PRINCE 2.
 HV7332'
 HV7332'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT STATION BUENA 2.
 HV7332'
 HV7332'HEIGHT OF LIGHT ABOVE STATION MARK 1.2 METERS.
 HV7332
 HV7332                          STATION RECOVERY (1953)
 HV7332
 HV7332'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV7332'STATION WAS NOT VISITED BECAUSE OF THE SWAMP SURROUNDING THE AREA.
 HV7332'HOWEVER, STATION WAS REPORTED DESTROYED PRIOR TO THIS SURVEY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6489 ***********************************************************************
 HV6489  DESIGNATION -  FOG 2
 HV6489  PID         -  HV6489
 HV6489  STATE/COUNTY-  MD/SOMERSET
 HV6489  COUNTRY     -  US
 HV6489  USGS QUAD   -  KEDGES STRAITS (2016)
 HV6489
 HV6489                         *CURRENT SURVEY CONTROL
 HV6489  ______________________________________________________________________
 HV6489* NAD 83(1993) POSITION- 38 02 08.24045(N) 076 02 29.44661(W)   ADJUSTED
 HV6489* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6489  ______________________________________________________________________
 HV6489  GEOID HEIGHT    -        -35.871 (meters)                     GEOID18
 HV6489  LAPLACE CORR    -         -1.77  (seconds)                    DEFLEC18
 HV6489  HORZ ORDER      -  THIRD
 HV6489
 HV6489.The horizontal coordinates were established by classical geodetic methods
 HV6489.and adjusted by the National Geodetic Survey in November 1994.
 HV6489
 HV6489.The orthometric height was scaled from a topographic map.
 HV6489
 HV6489.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6489.GEOID18 height accuracy estimate available here.
 HV6489
 HV6489.Click photographs - Photos may exist for this station.
 HV6489
 HV6489.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6489
 HV6489. The following values were computed from the NAD 83(1993) position.
 HV6489
 HV6489;                    North         East     Units Scale Factor Converg.
 HV6489;SPC MD       -    41,398.014   484,148.746   MT  1.00005650   +0 36 05.7
 HV6489;SPC MD       -   135,819.98  1,588,411.34   sFT  1.00005650   +0 36 05.7
 HV6489;SPC VA S     - 1,191,729.742 3,715,808.951   MT  1.00001331   +1 29 31.6
 HV6489;SPC VA S     - 3,909,866.66 12,190,949.87   sFT  1.00001331   +1 29 31.6
 HV6489;UTM  18      - 4,210,279.285   408,600.972   MT  0.99970289   -0 38 30.4
 HV6489
 HV6489!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6489!SPC MD       -   1.00000568  x   1.00005650  =   1.00006218
 HV6489!SPC VA S     -   1.00000568  x   1.00001331  =   1.00001899
 HV6489!UTM  18      -   1.00000568  x   0.99970289  =   0.99970857
 HV6489
 HV6489:                Primary Azimuth Mark                     Grid Az
 HV6489:SPC MD       -  SOLOMONS LUMP LIGHTHOUSE                 058 45 33.0
 HV6489:SPC VA S     -  SOLOMONS LUMP LIGHTHOUSE                 057 52 07.1
 HV6489:UTM  18      -  SOLOMONS LUMP LIGHTHOUSE                 060 00 09.1
 HV6489
 HV6489_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0860010279(NAD 83)
 HV6489
 HV6489|---------------------------------------------------------------------|
 HV6489| PID    Reference Object                     Distance      Geod. Az  |
 HV6489|                                                           dddmmss.s |
 HV6489| HV6492 SOLOMONS LUMP LIGHTHOUSE            APPROX. 2.7 KM 0592138.7 |
 HV6489| CX2775 FOG RM                               15.970 METERS 18040     |
 HV6489|---------------------------------------------------------------------|
 HV6489
 HV6489                          SUPERSEDED SURVEY CONTROL
 HV6489
 HV6489  NAD 83(1991)-  38 02 08.24053(N)    076 02 29.44918(W) AD(       ) 3
 HV6489  NAD 83(1986)-  38 02 08.24032(N)    076 02 29.46750(W) AD(       ) 3
 HV6489  NAD 27      -  38 02 07.77600(N)    076 02 30.67400(W) AD(       ) 3
 HV6489  USSD        -  38 02 08.14300(N)    076 02 30.40100(W) AD(       ) 3
 HV6489
 HV6489.Superseded values are not recommended for survey control.
 HV6489
 HV6489.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6489.See file dsdata.pdf to determine how the superseded data were derived.
 HV6489
 HV6489
 HV6489  HISTORY     - Date     Condition        Report By
 HV6489  HISTORY     - 1898     MONUMENTED       MDSFC
 HV6489  HISTORY     - 1907     SEE DESCRIPTION  CGS
 HV6489  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6489  HISTORY     - 20050720 MARK NOT FOUND   USPSQD
 HV6489
 HV6489                          STATION DESCRIPTION
 HV6489
 HV6489'DESCRIBED BY COAST AND GEODETIC SURVEY 1907
 HV6489'ON THE SOUTHERN SHORE OF KEDGE STRAITS, ON THE NW POINT OF
 HV6489'SMITH ISLAND, ON FOG POINT, ON THE N SIDE OF A SAND AND GRASS
 HV6489'POINT ABOUT 1 FOOT ABOVE HIGH WATER AND ABOUT 65 YARDS FROM EXTREME
 HV6489'END OF POINT TO NE, AND 6 YARDS S-SE FROM SHORE.  THE REMAINS OF
 HV6489'THE OLD FOG POINT LIGHTHOUSE ARE ABOUT 50 YARDS TO THE W-SW, AND
 HV6489'MYRTLE BUSHES ABOUND ON ALL SIDES EXCEPT ON THE W SIDE, WHICH IS
 HV6489'A SANDY BEACH.  STATION MARKED BY A NAIL IN CENTER OF TOP OF TILE
 HV6489'PIPE SET FLUSH WITH THE SURFACE OF GROUND.  THE STATION MARK
 HV6489'IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6489'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6489'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.
 HV6489'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP
 HV6489'OF POST.  IT IS 15.26 METERS (50.10 FEET) FROM THE STATION
 HV6489'S 00 DEG 40 MIN W.  THE BEARING OF OLD LIGHTHOUSE
 HV6489'FOUNDATION FROM THE STATION IS S 73 DEG 09 MIN W.  OTHER DISTANCES
 HV6489'AND BEARINGS ARE AS FOLLOWS--LARGE LONE CHERRY TREE,
 HV6489'1/4 MILE, S 00 DEG 48 MIN W.  FIRST ONE OF TWO TREES, 1/2 MILE, S 13
 HV6489'DEG 05 MIN W.  LARGE TREE NEAR TWO SMALLER ONES, 1-1/2 MILES,
 HV6489'N 82 DEG 03 MIN E.  LONE PINE TREE, 1 MILE, S 31 DEG 10 MIN E.
 HV6489
 HV6489                          STATION RECOVERY (1942)
 HV6489
 HV6489'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6489'THIS STATION WAS THOROUGHLY SEARCHED FOR BY 3 MEN FOR ONE
 HV6489'HOUR.  MOST OF THE LAND KNOWN AS FOG POINT HAS WASHED AWAY AND ONLY
 HV6489'ONE LONG STRIP OF LAND REMAINS.  THE OLD LIGHTHOUSE COULD NOT
 HV6489'BE FOUND.  IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED AS
 HV6489'DESTROYED.
 HV6489
 HV6489                          STATION RECOVERY (2005)
 HV6489
 HV6489'RECOVERY NOTE BY US POWER SQUADRON 2005 (EEC)
 HV6489'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1498 ***********************************************************************
 HU1498  DESIGNATION -  FOLLY
 HU1498  PID         -  HU1498
 HU1498  STATE/COUNTY-  MD/WORCESTER
 HU1498  COUNTRY     -  US
 HU1498  USGS QUAD   -  OCEAN CITY (2016)
 HU1498
 HU1498                         *CURRENT SURVEY CONTROL
 HU1498  ______________________________________________________________________
 HU1498* NAD 83(1991) POSITION- 38 17 19.36583(N) 075 06 43.05749(W)   ADJUSTED
 HU1498* NAVD 88 ORTHO HEIGHT -     1.8   (meters)        6.    (feet) VERTCON3
 HU1498  ______________________________________________________________________
 HU1498  GEOID HEIGHT    -        -36.106 (meters)                     GEOID18
 HU1498  LAPLACE CORR    -         -0.34  (seconds)                    DEFLEC18
 HU1498  HORZ ORDER      -  SECOND
 HU1498
 HU1498.The horizontal coordinates were established by classical geodetic methods
 HU1498.and adjusted by the National Geodetic Survey in January 1992.
 HU1498
 HU1498.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1498.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1498
 HU1498.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1498.GEOID18 height accuracy estimate available here.
 HU1498
 HU1498.Click photographs - Photos may exist for this station.
 HU1498
 HU1498.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1498
 HU1498. The following values were computed from the NAD 83(1991) position.
 HU1498
 HU1498;                    North         East     Units Scale Factor Converg.
 HU1498;SPC MD       -    70,758.011   565,167.467   MT  1.00000198   +1 11 06.0
 HU1498;SPC MD       -   232,145.24  1,854,220.26   sFT  1.00000198   +1 11 06.0
 HU1498;UTM  18      - 4,237,855.014   490,208.836   MT  0.99960118   -0 04 09.7
 HU1498
 HU1498!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1498!SPC MD       -   1.00000539  x   1.00000198  =   1.00000737
 HU1498!UTM  18      -   1.00000539  x   0.99960118  =   0.99960657
 HU1498
 HU1498:                Primary Azimuth Mark                     Grid Az
 HU1498:SPC MD       -  BUFFING                                  359 48 06.4
 HU1498:UTM  18      -  BUFFING                                  001 03 22.1
 HU1498
 HU1498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9020837855(NAD 83)
 HU1498
 HU1498|---------------------------------------------------------------------|
 HU1498| PID    Reference Object                     Distance      Geod. Az  |
 HU1498|                                                           dddmmss.s |
 HU1498| HU1499 BUFFING                             APPROX. 3.1 KM 0005912.4 |
 HU1498| DC7307 FOLLY RM 1                            7.497 METERS 03212     |
 HU1498| DC7308 FOLLY RM 2                            7.717 METERS 30642     |
 HU1498|---------------------------------------------------------------------|
 HU1498
 HU1498                          SUPERSEDED SURVEY CONTROL
 HU1498
 HU1498  NAD 83(1986)-  38 17 19.34904(N)    075 06 43.08840(W) AD(       ) 2
 HU1498  NAD 27      -  38 17 18.93407(N)    075 06 44.41749(W) AD(       ) 2
 HU1498  NGVD 29 (07/19/86)    2.0    (m)            7.     (f) VERT ANG       
 HU1498
 HU1498.Superseded values are not recommended for survey control.
 HU1498
 HU1498.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1498.See file dsdata.pdf to determine how the superseded data were derived.
 HU1498
 HU1498_MARKER: DS = TRIANGULATION STATION DISK
 HU1498_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 HU1498+WITH SETTING: INFORMATION.
 HU1498_STAMPING: FOLLY 1962
 HU1498_MARK LOGO: CGS
 HU1498_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1498
 HU1498  HISTORY     - Date     Condition        Report By
 HU1498  HISTORY     - 1962     MONUMENTED       CGS
 HU1498  HISTORY     - 1964     GOOD             CGS
 HU1498  HISTORY     - 1966     GOOD             LOCENG
 HU1498  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU1498
 HU1498                          STATION DESCRIPTION
 HU1498
 HU1498'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1498'THE STATION IS LOCATED ON A SMALL SAND DUNE ON ASSATEAGUE ISLAND,
 HU1498'8.0 MILE NORTH OF THE FERRY LANDING 1-1/2 MILES SOUTH OF OCEAN
 HU1498'CITY, MARYLAND.
 HU1498'
 HU1498'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND
 HU1498'STATE HIGHWAY 611 WHICH IS WEST OF OCEAN CITY, GO SOUTHERLY ON
 HU1498'STATE HIGHWAY 611 FOR 3.8 MILES TO THE JUNCTION OF STATE HIGHWAY
 HU1498'376, CONTINUE SOUTH ON STATE HIGHWAY 611 FOR 6.5 MILES TO A
 HU1498'GRAVELED SIDE ROAD LEFT, TURN LEFT AND GO EASTERLY TO THE OCEAN
 HU1498'CITY FERRY LANDING, CROSS THE FERRY.  HERE GO SOUTHEASTERLY ON
 HU1498'SAND ROAD FOR 0.4 MILE TO THE BEACH, TURN LEFT AND FOLLOW THE
 HU1498'BEACH NORTHERLY FOR 6.62 MILE TO THE STATION AND STANDARD
 HU1498'METAL WITNESS POST AND MARKER.
 HU1498'
 HU1498'STATION IS A STANDARD DISK SET IN THE TOP OF A 5/8 ROD WHICH
 HU1498'PROJECTS ABOUT 6 INCHES ABOVE THE SURFACE OF THE GROUND, STAMPED
 HU1498'FOLLY 1962.  IT IS 50.1 FEET WEST-SOUTHWEST OF A TELEPHONE POLE,
 HU1498'23.8 FEET EAST-SOUTHEAST OF A COAST GUARD POWERLINE POLE 73 AND
 HU1498'1.0 FOOT NORTH OF A STANDARD METAL WITNESS POST AND MARKER.
 HU1498'
 HU1498'REFERENCE MARK 1 IS A STANDARD DISK CLAMPED ON THE TOP OF 5/8 ROD
 HU1498'WHICH PROJECTS ABOUT 4 INCHES ABOVE THE SURFACE OF THE GROUND,
 HU1498'STAMPED FOLLY NO 1 1962.  IT IS 39.0 FEET WEST OF A TELEPHONE POLE,
 HU1498'36.3 FEET EAST-NORTHEAST OF COAST GUARD POWERLINE POLE 73 AND 1.0
 HU1498'FOOT NORTH OF A STANDARD METAL WITNESS POST AND MARKER.
 HU1498'
 HU1498'REFERENCE MARK 2 IS A STANDARD DISK CLAMPED ON THE TOP OF A 5/8 ROD
 HU1498'WHICH PROJECTS ABOUT 5 INCHES ABOVE THE SURFACE OF THE GROUND,
 HU1498'STAMPED FOLLY NO 2 1962.  IT IS 70.8 FEET WEST OF A TELEPHONE POLE,
 HU1498'4.7 FEET NORTH-NORTHEAST OF COAST GUARD POWERLINE POLE 73 AND 1.0
 HU1498'FOOT NORTH OF A STANDARD METAL WITNESS POST AND MARKER.
 HU1498'NOTE--THIS MARK APPEARED TO BE DISTURB BEFORE OBSERVATIONS WERE
 HU1498'MADE.
 HU1498'
 HU1498'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 HU1498
 HU1498                          STATION RECOVERY (1964)
 HU1498
 HU1498'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (RC)
 HU1498'STATION AND R.M. 2 WERE RECOVERED IN GOOD CONDITION ABOUT 8 INCHES
 HU1498'BELOW THE SURFACE.  R.M. 1 NOT SEARCHED FOR.
 HU1498'
 HU1498'R.M. 2 DISK BENT AND ARROW POINTS TOWARD MARK.  COAST GUARD POWER
 HU1498'LINE POLE NO. 73 SHOULD READ EASTERN SHORE PUBLIC SERVICE CO. POLE
 HU1498'73.
 HU1498
 HU1498                          STATION RECOVERY (1966)
 HU1498
 HU1498'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1966
 HU1498'RECOVERED BY BALL ASSOC.
 HU1498'
 HU1498'MARK IS APPROXIMATELY 3 FEET BELOW THE SURFACE.
 HU1498
 HU1498                          STATION RECOVERY (2003)
 HU1498
 HU1498'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU1498'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4693 ***********************************************************************
 AB4693  DESIGNATION -  FOODS
 AB4693  PID         -  AB4693
 AB4693  STATE/COUNTY-  MD/CARROLL
 AB4693  COUNTRY     -  US
 AB4693  USGS QUAD   -  NEW WINDSOR (2016)
 AB4693
 AB4693                         *CURRENT SURVEY CONTROL
 AB4693  ______________________________________________________________________
 AB4693* NAD 83(2011) POSITION- 39 33 05.60882(N) 077 02 43.30370(W)   ADJUSTED
 AB4693* NAD 83(2011) ELLIP HT-   139.032 (meters)        (06/27/12)   ADJUSTED
 AB4693* NAD 83(2011) EPOCH   -  2010.00
 AB4693* NAVD 88 ORTHO HEIGHT -   171.3   (meters)      562.    (feet) GPS OBS
 AB4693  ______________________________________________________________________
 AB4693  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4693  GEOID HEIGHT    -        -32.278 (meters)                     GEOID99
 AB4693  GEOID HEIGHT    -        -32.271 (meters)                     GEOID18
 AB4693  NAD 83(2011) X  -  1,104,010.346 (meters)                     COMP
 AB4693  NAD 83(2011) Y  - -4,799,326.629 (meters)                     COMP
 AB4693  NAD 83(2011) Z  -  4,039,807.388 (meters)                     COMP
 AB4693  LAPLACE CORR    -          4.33  (seconds)                    DEFLEC18
 AB4693
 AB4693  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4693  Standards:
 AB4693         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4693            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4693  -------------------------------------------------------------------
 AB4693  NETWORK    1.54   4.19           0.68   0.57   2.14      0.07191302
 AB4693  -------------------------------------------------------------------
 AB4693  Click here for local accuracies and other accuracy information.
 AB4693
 AB4693.The horizontal coordinates were established by GPS observations
 AB4693.and adjusted by the National Geodetic Survey in June 2012.
 AB4693
 AB4693.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4693.been affixed to the stable North American tectonic plate. See 
 AB4693.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4693
 AB4693.The horizontal coordinates are valid at the epoch date displayed above
 AB4693.which is a decimal equivalence of Year/Month/Day.
 AB4693
 AB4693.The orthometric height was determined by GPS observations and a
 AB4693.high-resolution geoid model.
 AB4693
 AB4693.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4693.GEOID18 height accuracy estimate available here.
 AB4693
 AB4693.Click photographs - Photos may exist for this station.
 AB4693
 AB4693.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4693
 AB4693.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4693
 AB4693.The ellipsoidal height was determined by GPS observations
 AB4693.and is referenced to NAD 83.
 AB4693
 AB4693. The following values were computed from the NAD 83(2011) position.
 AB4693
 AB4693;                    North         East     Units Scale Factor Converg.
 AB4693;SPC MD       -   209,240.215   396,101.056   MT  1.00001934   -0 01 42.5
 AB4693;SPC MD       -   686,482.27  1,299,541.55   sFT  1.00001934   -0 01 42.5
 AB4693;UTM  18      - 4,379,984.322   324,264.641   MT  0.99998024   -1 18 09.9
 AB4693
 AB4693!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4693!SPC MD       -   0.99997819  x   1.00001934  =   0.99999753
 AB4693!UTM  18      -   0.99997819  x   0.99998024  =   0.99995843
 AB4693
 AB4693:                Primary Azimuth Mark                     Grid Az
 AB4693:SPC MD       -  FOODS AZ MK                              045 39 16.3
 AB4693:UTM  18      -  FOODS AZ MK                              046 55 43.7
 AB4693
 AB4693_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2426479984(NAD 83)
 AB4693
 AB4693|---------------------------------------------------------------------|
 AB4693| PID    Reference Object                     Distance      Geod. Az  |
 AB4693|                                                           dddmmss.s |
 AB4693| AB4663 FOODS AZ MK                         APPROX. 0.5 KM 0453733.8 |
 AB4693|---------------------------------------------------------------------|
 AB4693
 AB4693                          SUPERSEDED SURVEY CONTROL
 AB4693
 AB4693  NAD 83(2007)-  39 33 05.60910(N)    077 02 43.30444(W) AD(2002.00) 0
 AB4693  ELLIP H (02/10/07)  139.053  (m)                       GP(2002.00)    
 AB4693  ELLIP H (08/30/02)  139.042  (m)                       GP(       ) 4 2
 AB4693  NAD 83(1991)-  39 33 05.60841(N)    077 02 43.30506(W) AD(       ) 1
 AB4693  ELLIP H (07/03/96)  138.972  (m)                       GP(       ) 1 1
 AB4693  NAVD 88 (07/03/96)  171.3    (m)  GEOID93  model used  GPS OBS        
 AB4693
 AB4693.Superseded values are not recommended for survey control.
 AB4693
 AB4693.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4693.See file dsdata.pdf to determine how the superseded data were derived.
 AB4693
 AB4693_MARKER: DD = SURVEY DISK
 AB4693_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4693_STAMPING: FOODS 1995
 AB4693_MARK LOGO: MD-013
 AB4693_PROJECTION: FLUSH
 AB4693_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4693_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4693+STABILITY: SURFACE MOTION
 AB4693_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4693+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2014
 AB4693
 AB4693  HISTORY     - Date     Condition        Report By
 AB4693  HISTORY     - 1995     MONUMENTED       MD-013
 AB4693  HISTORY     - 20140516 GOOD             RODCON
 AB4693
 AB4693                          STATION DESCRIPTION
 AB4693
 AB4693'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4693'STATION IS LOCATED ABOUT 3 MI (4.8 KM) SOUTHWEST OF WESTMINSTER AND
 AB4693'ABOUT 3 MI (4.8 KM) EAST OF NEW WINDSOR ON THE GROUNDS OF THE CARROLL
 AB4693'COUNTY FOODS. TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 31
 AB4693'(NEW WINDSOR ROAD) AND MD ROUTE 32 (MAIN STREET) IN WESTMINSTER GO
 AB4693'SOUTH ON MD ROUTE 31 FOR 3.5 MI (5.6 KM) TO THE INTERSECTION WITH
 AB4693'MEDFORD ROAD. TURN LEFT ON MEDFORD ROAD AND GO SOUTHEAST FOR 0.7 MI
 AB4693'(1.1 KM) TO THE INTERSECTION WITH AVONDALE ROAD. TURN LEFT ON AVONDALE
 AB4693'ROAD AND PROCEED TO THE ENTRANCE OF THE CARROLL COUNTY FOODS AND THE
 AB4693'STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4693'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 70.0 FT
 AB4693'(21.3 M) NORTHEAST OF THE CENTERLINE OF THE ENTRANCE ROAD, 48.0 FT
 AB4693'(14.6 M) SOUTHEAST OF THE CENTERLINE OF AVONDALE ROAD, 20.0 FT (6.1 M)
 AB4693'EAST OF THE NORTH END OF THE CARROLL COUNTY FOODS SIGN, 22.0 FT (6.7
 AB4693'M) EAST OF THE SOUTH END OF THE CARROLL COUNTY FOODS SIGN, 24.7 FT
 AB4693'(7.5 M) NORTH OF A 4 IN ASH TREE AND 22.2 FT (6.8 M) SOUTHEAST OF THE
 AB4693'END OF A 12 IN METAL DRAIN PIPE.
 AB4693
 AB4693                          STATION RECOVERY (2014)
 AB4693
 AB4693'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AB4693'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4663 ***********************************************************************
 AB4663  DESIGNATION -  FOODS AZ MK
 AB4663  PID         -  AB4663
 AB4663  STATE/COUNTY-  MD/CARROLL
 AB4663  COUNTRY     -  US
 AB4663  USGS QUAD   -  NEW WINDSOR (2016)
 AB4663
 AB4663                         *CURRENT SURVEY CONTROL
 AB4663  ______________________________________________________________________
 AB4663* NAD 83(2011) POSITION- 39 33 17.28438(N) 077 02 27.88741(W)   ADJUSTED
 AB4663* NAD 83(2011) ELLIP HT-   140.430 (meters)        (06/27/12)   ADJUSTED
 AB4663* NAD 83(2011) EPOCH   -  2010.00
 AB4663* NAVD 88 ORTHO HEIGHT -   172.7   (meters)      567.    (feet) GPS OBS
 AB4663  ______________________________________________________________________
 AB4663  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4663  GEOID HEIGHT    -        -32.280 (meters)                     GEOID99
 AB4663  GEOID HEIGHT    -        -32.272 (meters)                     GEOID18
 AB4663  NAD 83(2011) X  -  1,104,317.866 (meters)                     COMP
 AB4663  NAD 83(2011) Y  - -4,799,021.690 (meters)                     COMP
 AB4663  NAD 83(2011) Z  -  4,040,085.919 (meters)                     COMP
 AB4663  LAPLACE CORR    -          4.26  (seconds)                    DEFLEC18
 AB4663
 AB4663  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4663  Standards:
 AB4663         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4663            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4663  -------------------------------------------------------------------
 AB4663  NETWORK    1.49   4.08           0.66   0.55   2.08      0.07689963
 AB4663  -------------------------------------------------------------------
 AB4663  Click here for local accuracies and other accuracy information.
 AB4663
 AB4663.The horizontal coordinates were established by GPS observations
 AB4663.and adjusted by the National Geodetic Survey in June 2012.
 AB4663
 AB4663.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4663.been affixed to the stable North American tectonic plate. See 
 AB4663.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4663
 AB4663.The horizontal coordinates are valid at the epoch date displayed above
 AB4663.which is a decimal equivalence of Year/Month/Day.
 AB4663
 AB4663.The orthometric height was determined by GPS observations and a
 AB4663.high-resolution geoid model.
 AB4663
 AB4663.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4663.GEOID18 height accuracy estimate available here.
 AB4663
 AB4663.Click photographs - Photos may exist for this station.
 AB4663
 AB4663.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4663
 AB4663.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4663
 AB4663.The ellipsoidal height was determined by GPS observations
 AB4663.and is referenced to NAD 83.
 AB4663
 AB4663. The following values were computed from the NAD 83(2011) position.
 AB4663
 AB4663;                    North         East     Units Scale Factor Converg.
 AB4663;SPC MD       -   209,600.129   396,469.289   MT  1.00002001   -0 01 32.8
 AB4663;SPC MD       -   687,663.09  1,300,749.66   sFT  1.00002001   -0 01 32.8
 AB4663;UTM  18      - 4,380,335.944   324,640.771   MT  0.99997861   -1 18 00.4
 AB4663
 AB4663!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4663!SPC MD       -   0.99997797  x   1.00002001  =   0.99999798
 AB4663!UTM  18      -   0.99997797  x   0.99997861  =   0.99995658
 AB4663
 AB4663:                Primary Azimuth Mark                     Grid Az
 AB4663:SPC MD       -  FOODS                                    225 39 16.4
 AB4663:UTM  18      -  FOODS                                    226 55 44.0
 AB4663
 AB4663_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2464080335(NAD 83)
 AB4663
 AB4663|---------------------------------------------------------------------|
 AB4663| PID    Reference Object                     Distance      Geod. Az  |
 AB4663|                                                           dddmmss.s |
 AB4663| AB4693 FOODS                               APPROX. 0.5 KM 2253743.6 |
 AB4663|---------------------------------------------------------------------|
 AB4663
 AB4663                          SUPERSEDED SURVEY CONTROL
 AB4663
 AB4663  NAD 83(2007)-  39 33 17.28466(N)    077 02 27.88814(W) AD(2002.00) 0
 AB4663  ELLIP H (02/10/07)  140.450  (m)                       GP(2002.00)    
 AB4663  ELLIP H (08/30/02)  140.440  (m)                       GP(       ) 4 2
 AB4663  NAD 83(1991)-  39 33 17.28398(N)    077 02 27.88875(W) AD(       ) 1
 AB4663  ELLIP H (07/03/96)  140.370  (m)                       GP(       ) 1 1
 AB4663  NAVD 88 (07/03/96)  172.7    (m)  GEOID93  model used  GPS OBS        
 AB4663
 AB4663.Superseded values are not recommended for survey control.
 AB4663
 AB4663.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4663.See file dsdata.pdf to determine how the superseded data were derived.
 AB4663
 AB4663_MARKER: DD = SURVEY DISK
 AB4663_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4663_STAMPING: FOODS AZI 1995
 AB4663_MARK LOGO: MD-013
 AB4663_PROJECTION: FLUSH
 AB4663_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4663_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4663+STABILITY: SURFACE MOTION
 AB4663_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4663+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2014
 AB4663
 AB4663  HISTORY     - Date     Condition        Report By
 AB4663  HISTORY     - 1995     MONUMENTED       MD-013
 AB4663  HISTORY     - 20140516 GOOD             RODCON
 AB4663
 AB4663                          STATION DESCRIPTION
 AB4663
 AB4663'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4663'STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) SOUTHWEST OF THE CENTER OF
 AB4663'WESTMINSTER AND ABOUT 4.5 MI (7.2 KM) NORTHEAST OF NEW WINDSOR. TO
 AB4663'REACH STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE)
 AB4663'AND MD ROUTE 31 (NEW WINDSOR ROAD) GO SOUTH ON MD ROUTE 31 FOR ABOUT
 AB4663'4.0 MI (6.4 KM) TO THE INTERSECTION WITH MEDFORD ROAD. TURN LEFT ON
 AB4663'MEDFORD ROAD AND GO SOUTHEAST FOR 0.6 MI (1.0 KM) TO THE INTERSECTION
 AB4663'WITH AVONDALE ROAD. TURN LEFT AND GO NORTHEAST ON AVONDALE ROAD FOR
 AB4663'0.55 MI (0.89 KM) TO THE STATION ON THE LEFT BETWEEN THE ROAD AND THE
 AB4663'RAILROAD TRACKS. STATION IS ALSO LOCATED ABOUT 0.45 MI (0.72 KM)
 AB4663'SOUTHEAST OF THE INTERSECTION OF AVONDALE ROAD AND STONE CHAPEL ROAD.
 AB4663'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AB4663'SET FLUSH WITH THE GROUND. IT IS ABOUT 345 FT (105.2 M) SOUTHEAST OF
 AB4663'AN OLD RAILROAD CROSSING, 19.5 FT (5.9 M) NORTHWEST OF THE CENTERLINE
 AB4663'OF THE ROAD, 30.5 FT (9.3 M) SOUTHEAST OF THE SOUTHEAST RAIL OF THE
 AB4663'TRACKS, 40.5 FT (12.3 M) EAST OF A RAILROAD POST MARKED 8.37, 73.75 FT
 AB4663'(22.48 M) SOUTHEAST OF A WELL AND 89.0 FT (27.1 M) SOUTH OF A FIRE
 AB4663'HYDRANT.
 AB4663
 AB4663                          STATION RECOVERY (2014)
 AB4663
 AB4663'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AB4663'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8206 ***********************************************************************
 DH8206  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8206  DESIGNATION -  FOOTBRIDGE
 DH8206  PID         -  DH8206
 DH8206  STATE/COUNTY-  MD/DORCHESTER
 DH8206  COUNTRY     -  US
 DH8206  USGS QUAD   -  GOLDEN HILL (2016)
 DH8206
 DH8206                         *CURRENT SURVEY CONTROL
 DH8206  ______________________________________________________________________
 DH8206* NAD 83(2011) POSITION- 38 26 48.18166(N) 076 12 17.90030(W)   ADJUSTED
 DH8206* NAD 83(2011) ELLIP HT-   -34.406 (meters)        (06/27/12)   ADJUSTED
 DH8206* NAD 83(2011) EPOCH   -  2010.00
 DH8206* NAVD 88 ORTHO HEIGHT -     0.55  (meters)        1.8   (feet) GPS OBS
 DH8206  ______________________________________________________________________
 DH8206  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8206  GEOID HEIGHT    -        -34.913 (meters)                     GEOID03
 DH8206  GEOID HEIGHT    -        -34.948 (meters)                     GEOID18
 DH8206  NAD 83(2011) X  -  1,192,656.555 (meters)                     COMP
 DH8206  NAD 83(2011) Y  - -4,857,447.426 (meters)                     COMP
 DH8206  NAD 83(2011) Z  -  3,944,377.406 (meters)                     COMP
 DH8206  LAPLACE CORR    -         -6.03  (seconds)                    DEFLEC18
 DH8206
 DH8206  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8206  Standards:
 DH8206         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8206            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8206  -------------------------------------------------------------------
 DH8206  NETWORK    0.85   1.84           0.37   0.32   0.94     -0.04320359
 DH8206  -------------------------------------------------------------------
 DH8206  Click here for local accuracies and other accuracy information.
 DH8206
 DH8206.The horizontal coordinates were established by GPS observations
 DH8206.and adjusted by the National Geodetic Survey in June 2012.
 DH8206
 DH8206.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8206.been affixed to the stable North American tectonic plate. See 
 DH8206.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8206
 DH8206.The horizontal coordinates are valid at the epoch date displayed above
 DH8206.which is a decimal equivalence of Year/Month/Day.
 DH8206
 DH8206.The orthometric height was determined by GPS observations and a
 DH8206.high-resolution geoid model using precise GPS observation and
 DH8206.processing techniques.
 DH8206
 DH8206.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8206.GEOID18 height accuracy estimate available here.
 DH8206
 DH8206.Click photographs - Photos may exist for this station.
 DH8206
 DH8206.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8206
 DH8206.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8206
 DH8206.The ellipsoidal height was determined by GPS observations
 DH8206.and is referenced to NAD 83.
 DH8206
 DH8206. The following values were computed from the NAD 83(2011) position.
 DH8206
 DH8206;                    North         East     Units Scale Factor Converg.
 DH8206;SPC MD       -    86,890.995   469,401.102   MT  0.99997772   +0 29 56.4
 DH8206;SPC MD       -   285,074.87  1,540,026.78   sFT  0.99997772   +0 29 56.4
 DH8206;UTM  18      - 4,256,068.665   394,849.842   MT  0.99973616   -0 44 57.5
 DH8206
 DH8206!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8206!SPC MD       -   1.00000540  x   0.99997772  =   0.99998312
 DH8206!UTM  18      -   1.00000540  x   0.99973616  =   0.99974156
 DH8206
 DH8206_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9484956068(NAD 83)
 DH8206
 DH8206                          SUPERSEDED SURVEY CONTROL
 DH8206
 DH8206  NAD 83(2007)-  38 26 48.18186(N)    076 12 17.90118(W) AD(2002.00) B
 DH8206  ELLIP H (02/12/09)  -34.382  (m)                       GP(2002.00) 5 1
 DH8206  NAD 83(1991)-  38 26 48.18206(N)    076 12 17.90083(W) AD(       ) B
 DH8206  ELLIP H (02/28/06)  -34.374  (m)                       GP(       ) 5 1
 DH8206
 DH8206.Superseded values are not recommended for survey control.
 DH8206
 DH8206.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8206.See file dsdata.pdf to determine how the superseded data were derived.
 DH8206
 DH8206_MARKER: I = METAL ROD
 DH8206_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DH8206_STAMPING: NO STAMPING
 DH8206_MARK LOGO: NONE
 DH8206_PROJECTION: PROJECTING 1 CENTIMETERS
 DH8206_MAGNETIC: I = MARKER IS A STEEL ROD
 DH8206_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH8206_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8206+SATELLITE: SATELLITE OBSERVATIONS - September 08, 2005
 DH8206_ROD/PIPE-DEPTH: 18.3 meters
 DH8206
 DH8206  HISTORY     - Date     Condition        Report By
 DH8206  HISTORY     - 20050908 MONUMENTED       NGS
 DH8206
 DH8206                          STATION DESCRIPTION
 DH8206
 DH8206'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (FCM)
 DH8206'THIS MARK IS AT THE NORTHERLY SECTION OF A DIVIDED FOOT BRIDGE IN THE
 DH8206'BLACKWATER RIVER.  IT IS APPROXIMATELY A 20-MINUTE RIDE TO THE WEST BY
 DH8206'JOHN BOAT FROM THE BOAT RAMP AT THE  RT 335 BRIDGE. IT IS THE TOP
 DH8206'CENTER OF A STAINLESS STEEL ROD DRIVEN 60 FT TO REFUSAL  BETWEEN TWO
 DH8206'BOARDS IN THE CENTERLINE OF THE BRIDGE. THERE IS A 1-INCH PVC PIPE
 DH8206'AROUND  THE ROD. THE BRIDGE IS ROUGHLY 30 INCHES WIDE.
 DH8206'
 DH8206'TO ARRANGE ACCESS, CONTACT BLACKWATER NATIONAL WILDLIFE REFUGE STAFF
 DH8206'AT 410-228-2692 AS  FAR IN ADVANCE AS POSSIBLE. A BOAT IS NEEDED TO
 DH8206'REACH THE MARK.
 DH8206'
 DH8206'THE MARK IS 10.5 FT SOUTH (TOWARD MIDDLE OF RIVER) FROM THE GALVANIZED
 DH8206'PIPE ON THE WEST  SIDE OF THE BRIDGE THAT SUPPORTS THE USGS WATER
 DH8206'LEVEL GAGE, AND 3.5 FT NORTH TOWARD  THE SHORE FROM THE BOTTOM STEP OF
 DH8206'SEVERAL STEPS LEADING UP TO AN OBSERVATION  PLATFORM. IT PROJECTS
 DH8206'ABOUT 1 CM ABOVE THE SURROUNDING BOARDS. THIS LOCATION IS ABOUT  190
 DH8206'FT SOUTH OF THE SOUTHERLY LINE OF CATTAILS AT THE SHORE.
 DH8206'
 DH8206'NO PROVISION COULD BE MADE TO ANCHOR THE ROD TO PREVENT HORIZONTAL
 DH8206'MOTION WITHOUT  MODIFYING THE BRIDGE. CONSEQUENTLY, THE ROD CAN MOVE
 DH8206'SLIGHTLY, MOSTLY TO THE SOUTH. TO  THE N, W AND E IT IS PRETTY WELL
 DH8206'CONSTRAINED BY THE BOARDS IN THE BRIDGE. A PIECE OF  HIGH-DENSITY FOAM
 DH8206'COULD BE INSERTED TO PREVENT SOUTHERLY MOTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4728 ***********************************************************************
 HV4728  DESIGNATION -  FOOTE
 HV4728  PID         -  HV4728
 HV4728  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4728  COUNTRY     -  US
 HV4728  USGS QUAD   -  ALEXANDRIA (2019)
 HV4728
 HV4728                         *CURRENT SURVEY CONTROL
 HV4728  ______________________________________________________________________
 HV4728* NAD 83(1993) POSITION- 38 46 01.14042(N) 077 00 19.74098(W)   ADJUSTED
 HV4728* NAVD 88 ORTHO HEIGHT -    48.1   (meters)      158.    (feet) VERTCON3
 HV4728  ______________________________________________________________________
 HV4728  GEOID HEIGHT    -        -32.360 (meters)                     GEOID18
 HV4728  LAPLACE CORR    -         -3.04  (seconds)                    DEFLEC18
 HV4728  HORZ ORDER      -  FIRST
 HV4728
 HV4728.The horizontal coordinates were established by classical geodetic methods
 HV4728.and adjusted by the National Geodetic Survey in November 1994.
 HV4728
 HV4728.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4728.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4728
 HV4728.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4728.GEOID18 height accuracy estimate available here.
 HV4728
 HV4728.Click photographs - Photos may exist for this station.
 HV4728
 HV4728.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4728
 HV4728. The following values were computed from the NAD 83(1993) position.
 HV4728
 HV4728;                    North         East     Units Scale Factor Converg.
 HV4728;SPC MD       -   122,139.575   399,523.444   MT  0.99995164   -0 00 12.4
 HV4728;SPC MD       -   400,719.59  1,310,769.83   sFT  0.99995164   -0 00 12.4
 HV4728;SPC VA N     - 2,123,191.528 3,629,876.144   MT  0.99995178   +0 55 57.9
 HV4728;SPC VA N     - 6,965,837.54 11,909,018.65   sFT  0.99995178   +0 55 57.9
 HV4728;UTM  18      - 4,292,828.772   325,765.745   MT  0.99997384   -1 15 21.8
 HV4728
 HV4728!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4728!SPC MD       -   0.99999754  x   0.99995164  =   0.99994918
 HV4728!SPC VA N     -   0.99999754  x   0.99995178  =   0.99994932
 HV4728!UTM  18      -   0.99999754  x   0.99997384  =   0.99997138
 HV4728
 HV4728:                Primary Azimuth Mark                     Grid Az
 HV4728:SPC MD       -  MOUNT VERNON 3                           227 13 26.1
 HV4728:SPC VA N     -  MOUNT VERNON 3                           226 17 15.8
 HV4728:UTM  18      -  MOUNT VERNON 3                           228 28 35.5
 HV4728
 HV4728_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2576592828(NAD 83)
 HV4728
 HV4728|---------------------------------------------------------------------|
 HV4728| PID    Reference Object                     Distance      Geod. Az  |
 HV4728|                                                           dddmmss.s |
 HV4728| HV7588 HENSON VALLEY CHRISTIAN CH          APPROX. 2.9 KM 0673213.9 |
 HV4728| DC6288 FOOTE RM 3                                         17216     |
 HV4728| DC6286 FOOTE RM 1                           24.084 METERS 19211     |
 HV4728| HV4975 MOUNT VERNON 3                      APPROX. 9.3 KM 2271313.7 |
 HV4728| DC6287 FOOTE RM 2                            7.337 METERS 29540     |
 HV4728| HV4753 ALEXANDRIA FIRST BAP CH SPIRE       APPROX. 8.6 KM 3124352.0 |
 HV4728| HV4543 ALEXANDRIA CHRIST CHURCH            APPROX. 5.7 KM 3200146.2 |
 HV4728| HV4544 ALEXANDRIA CITY HALL GOLD BALL      APPROX. 5.4 KM 3222707.8 |
 HV4728|---------------------------------------------------------------------|
 HV4728
 HV4728                          SUPERSEDED SURVEY CONTROL
 HV4728
 HV4728  NAD 83(1991)-  38 46 01.13913(N)    077 00 19.74205(W) AD(       ) 1
 HV4728  NAD 83(1986)-  38 46 01.13895(N)    077 00 19.75465(W) AD(       ) 1
 HV4728  NAD 27      -  38 46 00.72896(N)    077 00 20.84056(W) AD(       ) 1
 HV4728  NGVD 29 (07/19/86)   48.3    (m)          158.     (f) VERT ANG       
 HV4728
 HV4728.Superseded values are not recommended for survey control.
 HV4728
 HV4728.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4728.See file dsdata.pdf to determine how the superseded data were derived.
 HV4728
 HV4728_MARKER: DS = TRIANGULATION STATION DISK
 HV4728_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4728_STAMPING: FOOTE 1970
 HV4728_MARK LOGO: CGS
 HV4728_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4728+STABILITY: SURFACE MOTION
 HV4728
 HV4728  HISTORY     - Date     Condition        Report By
 HV4728  HISTORY     - 1970     MONUMENTED       NGS
 HV4728
 HV4728                          STATION DESCRIPTION
 HV4728
 HV4728'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV4728'THE STATION IS ABOUT 3-1/2 MILES SOUTHEAST OF ALEXANDRIA, 2 MILES
 HV4728'SOUTHEAST OF OXON HILL AND 1-1/2 MILES EAST OF THE POTOMAC RIVER, ON
 HV4728'THE WEST SIDE OF OXON HILL ROAD, AND ON PROPERTY OF OLSON
 HV4728'COMPANY, ADDRESS 8911 OXON HILL ROAD SOUTHEAST, OXON HILL,
 HV4728'MARYLAND.
 HV4728'
 HV4728'TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY 495 AND
 HV4728'OXON HILL ROAD, ABOUT 1 MILE WEST OF OXON HILL, GO SOUTH ON OXON
 HV4728'HILL ROAD FOR 1.9 MILES TO THE FORT FOOTE ELEMENTARY SCHOOL ON THE
 HV4728'LEFT.  CONTINUE SOUTH ON OXON HILL ROAD FOR 0.65 MILE TO THE
 HV4728'STATION ON THE RIGHT, JUST BEFORE REACHING THE OLSON COMPANY
 HV4728'BUILDING.
 HV4728'
 HV4728'STATION MARK IS A STANDARD DISK, STAMPED FOOTE 1970, SET IN THE TOP
 HV4728'OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS FLUSH WITH
 HV4728'THE GROUND SURFACE.  IT IS 58.0 FEET NORTH OF THE CENTERLINE OF A
 HV4728'GRAVELED DRIVE, 47.0 FEET WEST OF THE CENTERLINE OF OXON HILL ROAD,
 HV4728'24.0 FEET EAST-NORTHEAST OF A WITNESS POST AND 22.3 FEET EAST OF A
 HV4728'BOARD FENCE.  THE UNDERGROUND MARK IS 40 INCHES BELOW THE
 HV4728'GROUND SURFACE.
 HV4728'
 HV4728'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED FOOTE NO 1 1970, SET IN
 HV4728'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV4728'FLUSH WITH THE GROUND SURFACE.  IT IS 86.4 FEET SOUTH OF THE
 HV4728'WITNESS POST, 62.0 FEET WEST OF THE CENTERLINE OF OXON HILL ROAD,
 HV4728'20.0 FEET SOUTH OF THE CENTERLINE OF THE GRAVELED DRIVE, 3.0 FEET
 HV4728'EAST OF A LUMBER YARD SHED AND ABOUT THE SAME ELEVATION AS THE
 HV4728'STATION.
 HV4728'
 HV4728'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED FOOTE NO 2 1970, SET IN
 HV4728'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV4728'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 69.0 FEET WEST OF THE
 HV4728'CENTERLINE OF OXON HILL ROAD, 1.6 FEET NORTH OF THE WITNESS POST,
 HV4728'1.2 FEET EAST OF THE BOARD FENCE AND ABOUT THE SAME ELEVATION AS
 HV4728'THE STATION.
 HV4728'
 HV4728'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED FOOT NO 3 1970, CEMENTED
 HV4728'IN A DRILL HOLE IN THE EAST CURB OF OXON HILL ROAD.  IT IS 56.3 FEET
 HV4728'WEST-SOUTHWEST OF THE NORTHWEST CORNER OF HOUSE NUMBER 9004, 55.0
 HV4728'FEET WEST-NORTHWEST OF THE SOUTHWEST CORNER OF THE HOUSE AND 20.7
 HV4728'FEET EAST OF THE CENTERLINE OF OXON HILL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5113 ***********************************************************************
 JV5113  DESIGNATION -  FORD
 JV5113  PID         -  JV5113
 JV5113  STATE/COUNTY-  MD/KENT
 JV5113  COUNTRY     -  US
 JV5113  USGS QUAD   -  ROCK HALL (2016)
 JV5113
 JV5113                         *CURRENT SURVEY CONTROL
 JV5113  ______________________________________________________________________
 JV5113* NAD 83(1991) POSITION- 39 08 07.35068(N) 076 10 50.13529(W)   ADJUSTED
 JV5113* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5113  ______________________________________________________________________
 JV5113  GEOID HEIGHT    -        -33.423 (meters)                     GEOID18
 JV5113  LAPLACE CORR    -         -2.08  (seconds)                    DEFLEC18
 JV5113  HORZ ORDER      -  THIRD
 JV5113
 JV5113.The horizontal coordinates were established by classical geodetic methods
 JV5113.and adjusted by the National Geodetic Survey in January 1992.
 JV5113
 JV5113.The orthometric height was scaled from a topographic map.
 JV5113
 JV5113.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5113.GEOID18 height accuracy estimate available here.
 JV5113
 JV5113.Click photographs - Photos may exist for this station.
 JV5113
 JV5113.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5113
 JV5113. The following values were computed from the NAD 83(1991) position.
 JV5113
 JV5113;                    North         East     Units Scale Factor Converg.
 JV5113;SPC MD       -   163,352.405   470,843.031   MT  0.99996008   +0 30 51.4
 JV5113;SPC MD       -   535,932.02  1,544,757.51   sFT  0.99996008   +0 30 51.4
 JV5113;UTM  18      - 4,332,463.034   397,963.976   MT  0.99972819   -0 44 42.7
 JV5113
 JV5113!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5113!SPC MD       -   1.00000513  x   0.99996008  =   0.99996521
 JV5113!UTM  18      -   1.00000513  x   0.99972819  =   0.99973331
 JV5113
 JV5113:                Primary Azimuth Mark                     Grid Az
 JV5113:SPC MD       -  KINSLEY                                  338 05 26.5
 JV5113:UTM  18      -  KINSLEY                                  339 21 00.6
 JV5113
 JV5113_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9796332463(NAD 83)
 JV5113
 JV5113|---------------------------------------------------------------------|
 JV5113| PID    Reference Object                     Distance      Geod. Az  |
 JV5113|                                                           dddmmss.s |
 JV5113| JV5112 MILL                                APPROX. 0.5 KM 0325122.5 |
 JV5113| JV5115 KINSLEY                             425.868 METERS 3383617.9 |
 JV5113|---------------------------------------------------------------------|
 JV5113
 JV5113                          SUPERSEDED SURVEY CONTROL
 JV5113
 JV5113  NAD 83(1986)-  39 08 07.34519(N)    076 10 50.14681(W) AD(       ) 3
 JV5113  NAD 27      -  39 08 06.94600(N)    076 10 51.31700(W) AD(       ) 3
 JV5113  USSD        -  39 08 07.35000(N)    076 10 51.14400(W) AD(       ) 3
 JV5113
 JV5113.Superseded values are not recommended for survey control.
 JV5113
 JV5113.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5113.See file dsdata.pdf to determine how the superseded data were derived.
 JV5113
 JV5113_MARKER: H = DRILL HOLE
 JV5113_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5113_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5113+STABILITY: SURFACE MOTION
 JV5113
 JV5113  HISTORY     - Date     Condition        Report By
 JV5113  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5113  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5113
 JV5113                          STATION DESCRIPTION
 JV5113
 JV5113'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5113'STATION IS ON THE WESTERN SHORE OF WEST FORK OF LANGFORD CREEK,
 JV5113'ABOUT 1 MILE NW OF MAIN BODY OF LANGFORD CREEK, 3/8 MILE NW OF
 JV5113'EAGLE POINT, AND 1/2 MILE S OF WHALE POINT, IN A GARDEN, ABOUT 20
 JV5113'FEET ABOVE HIGH WATER, 9 YARDS SW OF SHORE, 7 YARDS SW OF TOP OF
 JV5113'BANK, AND 80 YARDS SE OF HOUSE.
 JV5113'
 JV5113'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5113'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5113'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5113'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5113'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV5113'INCHES BELOW THE BASE OF THE MONUMENT.
 JV5113'
 JV5113'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5113'FOLLOWS--E GABLE OF DE FORDS HOUSE, 80 YARDS, N 69 DEG 37
 JV5113'MIN W.  12-INCH WALNUT TREE, 50 YARDS, N 57 DEG 11 MIN W. NAIL IN
 JV5113'BLAZE IN 12-INCH CHERRY TREE, 10.76 METERS (35.3 FEET), N 02 DEG
 JV5113'28 MIN W.  LONE CEDAR TREE, 1/2 MILE, N 28 DEG 37 MIN E. S GABLE OF
 JV5113'OLD BARN, 1 MILE, N 49 DEG 51 MIN E. NAIL IN BLAZE IN 8-INCH CEDAR
 JV5113'TREE, 6.23 METERS (20.44 FEET), S 65 DEG 19 MIN E. TWIN OAK TREE ON
 JV5113'EAGLE POINT, 1/4 MILE, S 52 DEG 33 MIN E.
 JV5113
 JV5113                          STATION RECOVERY (1941)
 JV5113
 JV5113'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5113'SEARCHED FOR BUT NOT FOUND.  LAND HAS BEEN PLOWED AND FARMER HAS
 JV5113'NEVER SEEN OR STRUCK ANYTHING.  REFERENCE TREES ALL GONE.  BANK CUT
 JV5113'BACK.  RECOMMEND THAT STATION TO BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3476 ***********************************************************************
 JU3476  DESIGNATION -  FORD
 JU3476  PID         -  JU3476
 JU3476  STATE/COUNTY-  MD/QUEEN ANNES
 JU3476  COUNTRY     -  US
 JU3476  USGS QUAD   -  SUDLERSVILLE (2017)
 JU3476
 JU3476                         *CURRENT SURVEY CONTROL
 JU3476  ______________________________________________________________________
 JU3476* NAD 83(1991) POSITION- 39 12 00.12869(N) 075 45 08.58191(W)   ADJUSTED
 JU3476* NAVD 88 ORTHO HEIGHT -    18.2   (meters)       60.    (feet) VERTCON3
 JU3476  ______________________________________________________________________
 JU3476  GEOID HEIGHT    -        -33.899 (meters)                     GEOID18
 JU3476  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 JU3476  HORZ ORDER      -  SECOND
 JU3476
 JU3476.The horizontal coordinates were established by classical geodetic methods
 JU3476.and adjusted by the National Geodetic Survey in January 1992.
 JU3476
 JU3476.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3476.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3476
 JU3476.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3476.GEOID18 height accuracy estimate available here.
 JU3476
 JU3476.Click photographs - Photos may exist for this station.
 JU3476
 JU3476.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3476
 JU3476. The following values were computed from the NAD 83(1991) position.
 JU3476
 JU3476;                    North         East     Units Scale Factor Converg.
 JU3476;SPC MD       -   170,949.128   507,764.487   MT  0.99996582   +0 46 59.0
 JU3476;SPC MD       -   560,855.60  1,665,890.65   sFT  0.99996582   +0 46 59.0
 JU3476;UTM  18      - 4,339,244.753   435,033.225   MT  0.99965197   -0 28 32.0
 JU3476
 JU3476!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3476!SPC MD       -   1.00000247  x   0.99996582  =   0.99996829
 JU3476!UTM  18      -   1.00000247  x   0.99965197  =   0.99965444
 JU3476
 JU3476:                Primary Azimuth Mark                     Grid Az
 JU3476:SPC MD       -  FORD AZIMUTH MARK                        087 25 32.0
 JU3476:UTM  18      -  FORD AZIMUTH MARK                        088 41 03.0
 JU3476
 JU3476_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3503339244(NAD 83)
 JU3476
 JU3476|---------------------------------------------------------------------|
 JU3476| PID    Reference Object                     Distance      Geod. Az  |
 JU3476|                                                           dddmmss.s |
 JU3476| CB1521 FORD RM 1                            13.112 METERS 02830     |
 JU3476| JU3469 FORD AZIMUTH MARK                   APPROX. 0.5 KM 0881231.0 |
 JU3476| CB1522 FORD RM 2                            12.497 METERS 14419     |
 JU3476| JU3475 BOUNDARY MONUMENT 51 DE MD           25.783 METERS 16048     |
 JU3476|---------------------------------------------------------------------|
 JU3476
 JU3476                          SUPERSEDED SURVEY CONTROL
 JU3476
 JU3476  NAD 83(1986)-  39 12 00.11971(N)    075 45 08.59184(W) AD(       ) 2
 JU3476  NAD 27      -  39 11 59.72150(N)    075 45 09.83480(W) AD(       ) 2
 JU3476  NGVD 29 (07/19/86)   18.4    (m)           60.     (f) VERT ANG       
 JU3476
 JU3476.Superseded values are not recommended for survey control.
 JU3476
 JU3476.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3476.See file dsdata.pdf to determine how the superseded data were derived.
 JU3476
 JU3476_MARKER: DS = TRIANGULATION STATION DISK
 JU3476_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3476_STAMPING: FORD 1961
 JU3476_MARK LOGO: CGS
 JU3476_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3476+STABILITY: SURFACE MOTION
 JU3476
 JU3476  HISTORY     - Date     Condition        Report By
 JU3476  HISTORY     - 1961     MONUMENTED       CGS
 JU3476  HISTORY     - 20041026 MARK NOT FOUND   USPSQD
 JU3476
 JU3476                          STATION DESCRIPTION
 JU3476
 JU3476'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3476'THE STATION IS LOCATED IN A PASTURE FIELD, 3.0 MILES NORTHWEST OF
 JU3476'HARTLY, DELAWARE, 5.0 MILES WEST-SOUTHWEST OF KENTON, DELAWARE, 6.0
 JU3476'MILES EAST OF SUDLERSVILLE AND ON PROPERTY OWNED BY MRS. EARNEST
 JU3476'FORD.
 JU3476'
 JU3476'TO REACH THE STATION FROM THE CROSSROADS IN SUDLERSVILLE,
 JU3476'MARYLAND, GO EASTERLY ON STATE HIGHWAY 300 FOR 6.0 MILES TO THE
 JU3476'DELAWARE-MARYLAND STATE LINE AND THE STATION IS LOCATED ON THE
 JU3476'LEFT ABOUT 200 FEET NORTH IN THE PASTURE FIELD.
 JU3476'
 JU3476'THE STATION MARK IS A STANDARD DISK STAMPED FORD 1961, SET IN
 JU3476'TOP OF A SQUARE CONCRETE MONUMENT WHICH IS 15 INCHES BELOW THE
 JU3476'GROUND SURFACE.  IT IS 22.9 FEET WEST OF A STANDARD METAL WITNESS
 JU3476'POST AND MARKER, 23.5 FEET WEST OF A NORTH AND SOUTH FENCE LINE,
 JU3476'88.0 FEET NORTHWEST OF A LARGE LONE WILD CHERRY TREE AND 179.0
 JU3476'FEET NORTH OF A FIELD ENTRANCE.
 JU3476'
 JU3476'REFERENCE MARK 1 IS A STANDARD DISK STAMPED FORD NO 1 1961,
 JU3476'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 1 INCH
 JU3476'ABOVE THE GROUND SURFACE.  IT IS 1.0 FOOT WEST OF THE NORTH AND
 JU3476'SOUTH FENCE LINE, 33.5 FEET NORTH OF THE WITNESS POST AND 121.3
 JU3476'FEET NORTH OF THE FIELD ENTRANCE.
 JU3476'
 JU3476'REFERENCE MARK 2 IS A STANDARD DISK STAMPED FORD NO 2 1961, SET
 JU3476'IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 2 INCHES ABOVE
 JU3476'THE GROUND SURFACE.  IT IS 1.7 FEET WEST OF THE NORTH AND SOUTH
 JU3476'FENCE LINE, 37.8 FEET SOUTH OF THE WITNESS POST AND 50.0 FEET
 JU3476'NORTH OF THE LARGE LONE WILD CHERRY TREE.
 JU3476'
 JU3476'BOUNDARY MONUMENT NO. 51 IS A 12 X 12 INCH LIMESTONE MONUMENT
 JU3476'WHICH PROJECTS 20 INCHES ABOVE THE GROUND SURFACE AND HAS THE
 JU3476'LETTERS P AND M ON THE EAST AND WEST SIDES OF THE MONUMENT.  THE
 JU3476'MONUMENT IS FIRMLY SET AND IN EXCELLENT CONDITION EXCEPT THE
 JU3476'CORNERS ARE SLIGHTLY CHIPPED.  IT IS LOCATED 1.5 FEET WEST OF A
 JU3476'NORTH AND SOUTH FENCE LINE, 3.0 FEET NORTH OF A LARGE LONE WILD
 JU3476'CHERRY TREE AND 97.0 FEET NORTH OF A FIELD ENTRANCE.
 JU3476'
 JU3476'TO REACH THE AZIMUTH MARK FROM THE STATION, GO EAST ON STATE
 JU3476'HIGHWAY 300 FOR 0.4 MILE TO THE JUNCTION OF STATE HIGHWAY 44
 JU3476'AND THE AZIMUTH MARK IS LOCATED ON THE RIGHT.
 JU3476'
 JU3476'THE AZIMUTH MARK IS A STANDARD DISK STAMPED FORD 1961, SET IN
 JU3476'TOP OF SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND
 JU3476'SURFACE.  IT IS 9.4 FEET NORTHEAST OF A STANDARD METAL WITNESS
 JU3476'POST AND MARKER, 14.3 FEET EAST OF A TELEPHONE POLE NUMBER
 JU3476'JB326, 32.4 FEET SOUTH OF THE APPROXIMATE CENTER OF STATE HIGHWAY
 JU3476'300 AND 69.0 FEET SOUTHWEST OF THE CROSSROADS INTERSECTION OF
 JU3476'STATE HIGHWAY 300 AND STATE HIGHWAY 44.
 JU3476'
 JU3476'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JU3476
 JU3476                          STATION RECOVERY (2004)
 JU3476
 JU3476'RECOVERY NOTE BY US POWER SQUADRON 2004 (KN)
 JU3476'REFERENCED BOUNDARY MARKER NUMBER 51, RM 1 AND RM 2 WERE FOUND IN GOOD
 JU3476'CONDITION.  NOTE RM 2 IS INCORRECTLY STAMPED FORD NO 1.
 JU3476'STATION FORD IS IN A CULTIVATED FIELD AND DIGGING WAS NOT ATTEMPTED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4747 ***********************************************************************
 AB4747  DESIGNATION -  FORD
 AB4747  PID         -  AB4747
 AB4747  STATE/COUNTY-  MD/CARROLL
 AB4747  COUNTRY     -  US
 AB4747  USGS QUAD   -  FINKSBURG (2016)
 AB4747
 AB4747                         *CURRENT SURVEY CONTROL
 AB4747  ______________________________________________________________________
 AB4747* NAD 83(2011) POSITION- 39 28 16.28147(N) 076 56 42.62079(W)   ADJUSTED
 AB4747* NAD 83(2011) ELLIP HT-   171.599 (meters)        (06/27/12)   ADJUSTED
 AB4747* NAD 83(2011) EPOCH   -  2010.00
 AB4747* NAVD 88 ORTHO HEIGHT -   203.6   (meters)      668.    (feet) GPS OBS
 AB4747  ______________________________________________________________________
 AB4747  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4747  GEOID HEIGHT    -        -32.026 (meters)                     GEOID99
 AB4747  GEOID HEIGHT    -        -32.018 (meters)                     GEOID18
 AB4747  NAD 83(2011) X  -  1,113,689.010 (meters)                     COMP
 AB4747  NAD 83(2011) Y  - -4,802,943.724 (meters)                     COMP
 AB4747  NAD 83(2011) Z  -  4,032,943.895 (meters)                     COMP
 AB4747  LAPLACE CORR    -         -0.74  (seconds)                    DEFLEC18
 AB4747
 AB4747  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4747  Standards:
 AB4747         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4747            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4747  -------------------------------------------------------------------
 AB4747  NETWORK    2.31   7.96           0.97   0.90   4.06      0.24681638
 AB4747  -------------------------------------------------------------------
 AB4747  Click here for local accuracies and other accuracy information.
 AB4747
 AB4747.The horizontal coordinates were established by GPS observations
 AB4747.and adjusted by the National Geodetic Survey in June 2012.
 AB4747
 AB4747.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4747.been affixed to the stable North American tectonic plate. See 
 AB4747.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4747
 AB4747.The horizontal coordinates are valid at the epoch date displayed above
 AB4747.which is a decimal equivalence of Year/Month/Day.
 AB4747
 AB4747.The orthometric height was determined by GPS observations and a
 AB4747.high-resolution geoid model.
 AB4747
 AB4747.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4747.GEOID18 height accuracy estimate available here.
 AB4747
 AB4747.Click photographs - Photos may exist for this station.
 AB4747
 AB4747.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4747
 AB4747.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4747
 AB4747.The ellipsoidal height was determined by GPS observations
 AB4747.and is referenced to NAD 83.
 AB4747
 AB4747. The following values were computed from the NAD 83(2011) position.
 AB4747
 AB4747;                    North         East     Units Scale Factor Converg.
 AB4747;SPC MD       -   200,317.605   404,717.870   MT  1.00000378   +0 02 03.9
 AB4747;SPC MD       -   657,208.68  1,327,811.88   sFT  1.00000378   +0 02 03.9
 AB4747;UTM  18      - 4,370,872.967   332,680.729   MT  0.99994470   -1 14 12.5
 AB4747
 AB4747!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4747!SPC MD       -   0.99997308  x   1.00000378  =   0.99997686
 AB4747!UTM  18      -   0.99997308  x   0.99994470  =   0.99991778
 AB4747
 AB4747_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3268070872(NAD 83)
 AB4747
 AB4747|---------------------------------------------------------------------|
 AB4747| PID    Reference Object                     Distance      Geod. Az  |
 AB4747|                                                           dddmmss.s |
 AB4747| AB4714 FORD AZ MK                          355.842 METERS 10605     |
 AB4747|---------------------------------------------------------------------|
 AB4747
 AB4747                          SUPERSEDED SURVEY CONTROL
 AB4747
 AB4747  NAD 83(2007)-  39 28 16.28171(N)    076 56 42.62154(W) AD(2002.00) 0
 AB4747  ELLIP H (02/10/07)  171.623  (m)                       GP(2002.00)    
 AB4747  ELLIP H (08/30/02)  171.631  (m)                       GP(       ) 4 2
 AB4747  NAD 83(1991)-  39 28 16.28123(N)    076 56 42.62183(W) AD(       ) 1
 AB4747  ELLIP H (07/03/96)  171.535  (m)                       GP(       ) 1 1
 AB4747  NAVD 88 (07/03/96)  203.6    (m)  GEOID93  model used  GPS OBS        
 AB4747
 AB4747.Superseded values are not recommended for survey control.
 AB4747
 AB4747.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4747.See file dsdata.pdf to determine how the superseded data were derived.
 AB4747
 AB4747_MARKER: DD = SURVEY DISK
 AB4747_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4747_STAMPING: FORD 1995
 AB4747_MARK LOGO: MD-013
 AB4747_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4747_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4747+STABILITY: SURFACE MOTION
 AB4747_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4747+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4747
 AB4747  HISTORY     - Date     Condition        Report By
 AB4747  HISTORY     - 1995     MONUMENTED       MD-013
 AB4747
 AB4747                          STATION DESCRIPTION
 AB4747
 AB4747'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4747'THE STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) SOUTHEAST OF WESTMINSTER
 AB4747'AND ABOUT 3 MI (4.8 KM) SOUTHWEST OF FINKSBURG.
 AB4747'
 AB4747'TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 91 (GAMBER ROAD)
 AB4747'AND MD ROUTE 32 (SYKESVILLE ROAD) AT GAMBER, GO NORTHWEST ON MD ROUTE
 AB4747'32 FOR 0.7 MI (1.1 KM) TO THE STATION ON THE LEFT.  THE STATION IS
 AB4747'ALSO 0.45 MI (0.72 KM) SOUTHEAST OF THE INTERSECTION OF MD ROUTE 32
 AB4747'AND KLEES MILL ROAD.
 AB4747'
 AB4747'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4747'MONUMENT SET FLUSH WITH THE GROUND.  IT IS 31.4 FT (9.6 M) SOUTHWEST
 AB4747'OF THE CENTERLINE OF THE ROAD, 78.2 FT (23.8 M) NORTHWEST OF A SIGN,
 AB4747'104.6 FT (31.9 M) NORTHWEST OF POWER POLE NO. 413, 20.4 FT (6.2 M)
 AB4747'NORTH OF A 4 IN WHITE PINE, 87.9 FT (26.8 M) NORTHEAST OF THE
 AB4747'NORTHEAST CORNER OF A WOODEN SHED, 30.8 FT (9.4 M) NORTHEAST OF A WELL
 AB4747'AND 123.5 FT (37.6 M) NORTHWEST OF THE CENTERLINE OF A DRIVEWAY
 AB4747'LEADING SOUTHWEST TO HOUSE NO. 3736.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3217 ***********************************************************************
 DS3217  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3217  DESIGNATION -  FORD
 DS3217  PID         -  DS3217
 DS3217  STATE/COUNTY-  MD/FREDERICK
 DS3217  COUNTRY     -  US
 DS3217  USGS QUAD   -  FREDERICK (2016)
 DS3217
 DS3217                         *CURRENT SURVEY CONTROL
 DS3217  ______________________________________________________________________
 DS3217* NAD 83(2011) POSITION- 39 22 59.57243(N) 077 22 32.77659(W)   ADJUSTED
 DS3217* NAD 83(2011) ELLIP HT-    61.100 (meters)        (01/13/25)   ADJUSTED
 DS3217* NAD 83(2011) EPOCH   -  2010.00
 DS3217* NAVD 88 ORTHO HEIGHT -    93.67  (meters)      307.3   (feet) GPS OBS
 DS3217  ______________________________________________________________________
 DS3217  GEOID HEIGHT    -        -32.568 (meters)                     GEOID18
 DS3217  NAD 83(2011) X  -  1,078,899.122 (meters)                     COMP
 DS3217  NAD 83(2011) Y  - -4,817,147.817 (meters)                     COMP
 DS3217  NAD 83(2011) Z  -  4,025,329.023 (meters)                     COMP
 DS3217  LAPLACE CORR    -          5.95  (seconds)                    DEFLEC18
 DS3217
 DS3217  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3217  Standards:
 DS3217         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3217            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3217  -------------------------------------------------------------------
 DS3217  NETWORK    0.59   1.71           0.26   0.22   0.87     -0.05415853
 DS3217  -------------------------------------------------------------------
 DS3217  Click here for local accuracies and other accuracy information.
 DS3217
 DS3217.The horizontal coordinates were established by GPS observations
 DS3217.and adjusted by the MD DOT HIGHWAY ADMIN in January 2025.
 DS3217
 DS3217.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3217.been affixed to the stable North American tectonic plate. See 
 DS3217.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3217
 DS3217.The horizontal coordinates are valid at the epoch date displayed above
 DS3217.which is a decimal equivalence of Year/Month/Day.
 DS3217
 DS3217.The orthometric height was determined by GPS observations and a
 DS3217.high-resolution geoid model using precise GPS observation and
 DS3217.processing techniques.
 DS3217
 DS3217.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3217.GEOID18 height accuracy estimate available here.
 DS3217
 DS3217.Click photographs - Photos may exist for this station.
 DS3217
 DS3217.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3217
 DS3217.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3217
 DS3217.The ellipsoidal height was determined by GPS observations
 DS3217.and is referenced to NAD 83.
 DS3217
 DS3217. The following values were computed from the NAD 83(2011) position.
 DS3217
 DS3217;                    North         East     Units Scale Factor Converg.
 DS3217;SPC MD       -   190,615.583   367,625.052   MT  0.99998900   -0 14 09.0
 DS3217;SPC MD       -   625,377.96  1,206,116.52   sFT  0.99998900   -0 14 09.0
 DS3217;UTM  18      - 4,361,996.312   295,380.560   MT  1.00011554   -1 30 28.7
 DS3217
 DS3217!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3217!SPC MD       -   0.99999041  x   0.99998900  =   0.99997941
 DS3217!UTM  18      -   0.99999041  x   1.00011554  =   1.00010595
 DS3217
 DS3217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9538061996(NAD 83)
 DS3217
 DS3217                          SUPERSEDED SURVEY CONTROL
 DS3217
 DS3217.No superseded survey control is available for this station.
 DS3217
 DS3217_MARKER: DD = SURVEY DISK
 DS3217_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS3217_STAMPING: FORD 2000
 DS3217_MARK LOGO: MD-021
 DS3217_PROJECTION: FLUSH
 DS3217_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS3217+STABILITY: SURFACE MOTION
 DS3217_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3217+SATELLITE: SATELLITE OBSERVATIONS - August 07, 2024
 DS3217
 DS3217  HISTORY     - Date     Condition        Report By
 DS3217  HISTORY     - 20000101 MONUMENTED       MD-021
 DS3217  HISTORY     - 20240807 GOOD             MDSHA
 DS3217
 DS3217                          STATION DESCRIPTION
 DS3217
 DS3217'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 DS3217'THE MARK IS LOCATED ABOUT 4.5 MI (7.2 KM) NORTHEAST OF BUCKEYSTOWN,
 DS3217'4.2 MI (6.8 KM) NORTH-NORTHWEST OF URBANA AND 2.8 MI (4.5 KM)
 DS3217'SOUTHEAST OF FREDERICK.  THE MARK IS AT THE INTERSECTION OF REICHS
 DS3217'FORD ROAD AND PUBLIC SAFETY PLACE AT THE ENTRANCE TO THE PUBLIC SAFETY
 DS3217'TRAINING CENTER.  THE ADDRESS IS 5370 PUBLIC SAFETY PLACE, FREDERICK,
 DS3217'MD 21704.
 DS3217'
 DS3217'TO REACH THE MARK FROM THE INTERSECTION OF MD 80(FINGERBOARD RD) AND
 DS3217'IJAMSVILLE ROAD PROCEED NORTH ON IJAMSVILLE ROAD 2.28 KM (1.42 MI) TO
 DS3217'THE INTERSECTION WITH REICHS FORD ROAD.  TURN LEFT AND PROCEED ON
 DS3217'REICHS FORD ROAD FOR 2.64 KM (1.64 MI) TO THE FORK IN THE ROAD WITH
 DS3217'BARTONSVILLE ROAD.  BEAR LEFT TO CONTINUE ON REICHS FORD ROAD AND
 DS3217'PROCEED FOR 3.13 KM (1.95 MI) TO THE MARK ON THE LEFT.
 DS3217'
 DS3217'THE MARK IS 55.7 FT (17.0 M) NORTHWEST OF THE CENTERLINE OF PUBLIC
 DS3217'SAFETY PLACE, 28.8 FT (8.8 M) NORTHWEST OF A STREET SIGN, 19.7 FT (6.0
 DS3217'M) NORTH-NORTHEAST OF A MEMORIAL FOUNTAIN, 8.0 FT (2.4 M) SOUTHEAST OF
 DS3217'THE CORNER OF A SIX FOOT TALL CHAIN LINK FENCE SET IN THE TOP OF A
 DS3217'10-IN (25 CM) ROUND CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3604 ***********************************************************************
 JU3604  DESIGNATION -  FORD 2 1898
 JU3604  PID         -  JU3604
 JU3604  STATE/COUNTY-  MD/CECIL
 JU3604  COUNTRY     -  US
 JU3604  USGS QUAD   -  EARLEVILLE (2016)
 JU3604
 JU3604                         *CURRENT SURVEY CONTROL
 JU3604  ______________________________________________________________________
 JU3604* NAD 83(1991) POSITION- 39 28 27.43127(N) 075 56 46.75649(W)   ADJUSTED
 JU3604* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3604  ______________________________________________________________________
 JU3604  GEOID HEIGHT    -        -33.351 (meters)                     GEOID18
 JU3604  LAPLACE CORR    -         -0.80  (seconds)                    DEFLEC18
 JU3604  HORZ ORDER      -  THIRD
 JU3604
 JU3604.The horizontal coordinates were established by classical geodetic methods
 JU3604.and adjusted by the National Geodetic Survey in January 1992.
 JU3604
 JU3604.The orthometric height was scaled from a topographic map.
 JU3604
 JU3604.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3604.GEOID18 height accuracy estimate available here.
 JU3604
 JU3604.Click photographs - Photos may exist for this station.
 JU3604
 JU3604.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3604
 JU3604. The following values were computed from the NAD 83(1991) position.
 JU3604
 JU3604;                    North         East     Units Scale Factor Converg.
 JU3604;SPC MD       -   201,183.282   490,662.278   MT  1.00000434   +0 39 40.8
 JU3604;SPC MD       -   660,048.82  1,609,781.16   sFT  1.00000434   +0 39 40.8
 JU3604;UTM  18      - 4,369,838.153   418,605.542   MT  0.99968157   -0 36 05.9
 JU3604
 JU3604!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3604!SPC MD       -   1.00000527  x   1.00000434  =   1.00000961
 JU3604!UTM  18      -   1.00000527  x   0.99968157  =   0.99968684
 JU3604
 JU3604:                Primary Azimuth Mark                     Grid Az
 JU3604:SPC MD       -  CABIN                                    233 19 30.5
 JU3604:UTM  18      -  CABIN                                    234 35 17.2
 JU3604
 JU3604_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1860569838(NAD 83)
 JU3604
 JU3604|---------------------------------------------------------------------|
 JU3604| PID    Reference Object                     Distance      Geod. Az  |
 JU3604|                                                           dddmmss.s |
 JU3604| JU3601 CABIN                               APPROX. 2.1 KM 2335911.3 |
 JU3604|---------------------------------------------------------------------|
 JU3604
 JU3604                          SUPERSEDED SURVEY CONTROL
 JU3604
 JU3604  NAD 83(1986)-  39 28 27.42325(N)    075 56 46.76238(W) AD(       ) 3
 JU3604  NAD 27      -  39 28 27.02700(N)    075 56 47.97100(W) AD(       ) 3
 JU3604  USSD        -  39 28 27.40500(N)    075 56 47.80400(W) AD(       ) 3
 JU3604
 JU3604.Superseded values are not recommended for survey control.
 JU3604
 JU3604.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3604.See file dsdata.pdf to determine how the superseded data were derived.
 JU3604
 JU3604
 JU3604  HISTORY     - Date     Condition        Report By
 JU3604  HISTORY     - 1898     MONUMENTED       CGS
 JU3604  HISTORY     - 1902     GOOD             CGS
 JU3604
 JU3604                          STATION DESCRIPTION
 JU3604
 JU3604'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 JU3604'ON SE SIDE OF ELK RIVER, ON POINT AT SOUTHERN SIDE OF MOUTH OF
 JU3604'BOHEMIA RIVER, AT HIGH-WATER MARK AT FORDS LANDING.  MARKED BY A
 JU3604'BOX 3 INCHES SQUARE SET 3 FEET DEEP IN GROUND.  A 3-INCH SIGNAL
 JU3604'POLE WAS SET INSIDE THE BOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4714 ***********************************************************************
 AB4714  DESIGNATION -  FORD AZ MK
 AB4714  PID         -  AB4714
 AB4714  STATE/COUNTY-  MD/CARROLL
 AB4714  COUNTRY     -  US
 AB4714  USGS QUAD   -  FINKSBURG (2016)
 AB4714
 AB4714                         *CURRENT SURVEY CONTROL
 AB4714  ______________________________________________________________________
 AB4714* NAD 83(2011) POSITION- 39 28 13.08543(N) 076 56 28.31615(W)   ADJUSTED
 AB4714* NAD 83(2011) ELLIP HT-   172.716 (meters)        (06/27/12)   ADJUSTED
 AB4714* NAD 83(2011) EPOCH   -  2010.00
 AB4714* NAVD 88 ORTHO HEIGHT -   204.7   (meters)      672.    (feet) GPS OBS
 AB4714  ______________________________________________________________________
 AB4714  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4714  GEOID HEIGHT    -        -32.027 (meters)                     GEOID99
 AB4714  GEOID HEIGHT    -        -32.018 (meters)                     GEOID18
 AB4714  NAD 83(2011) X  -  1,114,036.448 (meters)                     COMP
 AB4714  NAD 83(2011) Y  - -4,802,928.355 (meters)                     COMP
 AB4714  NAD 83(2011) Z  -  4,032,868.515 (meters)                     COMP
 AB4714  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 AB4714
 AB4714  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4714  Standards:
 AB4714         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4714            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4714  -------------------------------------------------------------------
 AB4714  NETWORK    2.31   9.13           0.98   0.89   4.66      0.25702421
 AB4714  -------------------------------------------------------------------
 AB4714  Click here for local accuracies and other accuracy information.
 AB4714
 AB4714.The horizontal coordinates were established by GPS observations
 AB4714.and adjusted by the National Geodetic Survey in June 2012.
 AB4714
 AB4714.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4714.been affixed to the stable North American tectonic plate. See 
 AB4714.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4714
 AB4714.The horizontal coordinates are valid at the epoch date displayed above
 AB4714.which is a decimal equivalence of Year/Month/Day.
 AB4714
 AB4714.The orthometric height was determined by GPS observations and a
 AB4714.high-resolution geoid model.
 AB4714
 AB4714.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4714.GEOID18 height accuracy estimate available here.
 AB4714
 AB4714.Click photographs - Photos may exist for this station.
 AB4714
 AB4714.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4714
 AB4714.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4714
 AB4714.The ellipsoidal height was determined by GPS observations
 AB4714.and is referenced to NAD 83.
 AB4714
 AB4714. The following values were computed from the NAD 83(2011) position.
 AB4714
 AB4714;                    North         East     Units Scale Factor Converg.
 AB4714;SPC MD       -   200,219.251   405,059.851   MT  1.00000361   +0 02 12.9
 AB4714;SPC MD       -   656,885.99  1,328,933.86   sFT  1.00000361   +0 02 12.9
 AB4714;UTM  18      - 4,370,767.056   333,020.424   MT  0.99994330   -1 14 03.3
 AB4714
 AB4714!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4714!SPC MD       -   0.99997290  x   1.00000361  =   0.99997651
 AB4714!UTM  18      -   0.99997290  x   0.99994330  =   0.99991621
 AB4714
 AB4714_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3302070767(NAD 83)
 AB4714
 AB4714|---------------------------------------------------------------------|
 AB4714| PID    Reference Object                     Distance      Geod. Az  |
 AB4714|                                                           dddmmss.s |
 AB4714| AB4747 FORD                                355.842 METERS 28605     |
 AB4714|---------------------------------------------------------------------|
 AB4714
 AB4714                          SUPERSEDED SURVEY CONTROL
 AB4714
 AB4714  NAD 83(2007)-  39 28 13.08567(N)    076 56 28.31690(W) AD(2002.00) 0
 AB4714  ELLIP H (02/10/07)  172.739  (m)                       GP(2002.00)    
 AB4714  ELLIP H (08/30/02)  172.720  (m)                       GP(       ) 4 2
 AB4714  NAD 83(1991)-  39 28 13.08536(N)    076 56 28.31722(W) AD(       ) 1
 AB4714  ELLIP H (07/03/96)  172.645  (m)                       GP(       ) 1 1
 AB4714  NAVD 88 (07/03/96)  204.7    (m)  GEOID93  model used  GPS OBS        
 AB4714
 AB4714.Superseded values are not recommended for survey control.
 AB4714
 AB4714.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4714.See file dsdata.pdf to determine how the superseded data were derived.
 AB4714
 AB4714_MARKER: DD = SURVEY DISK
 AB4714_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4714_STAMPING: FORD AZI 1995
 AB4714_MARK LOGO: MD-013
 AB4714_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4714_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4714+STABILITY: SURFACE MOTION
 AB4714_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4714+SATELLITE: SATELLITE OBSERVATIONS - January 12, 2013
 AB4714
 AB4714  HISTORY     - Date     Condition        Report By
 AB4714  HISTORY     - 1995     MONUMENTED       MD-013
 AB4714  HISTORY     - 20130112 GOOD             GEOCAC
 AB4714
 AB4714                          STATION DESCRIPTION
 AB4714
 AB4714'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4714'STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) SOUTHEAST OF WESTMINSTER AND
 AB4714'ABOUT 3.0 MI (4.8 KM) SOUTHWEST OF FINKSBURG ON THE CARNIVAL GROUNDS
 AB4714'BEHIND THE FIRE STATION AT GAMBER. TO REACH STATION FROM THE
 AB4714'INTERSECTION OF MD ROUTE 140 (BALTIMORE BLVD) AND MD ROUTE 91 (GAMBER
 AB4714'ROAD) AT FINKSBURG, GO SOUTH ON MD ROUTE 91 FOR 3.2 MI (5.1 KM) TO THE
 AB4714'INTERSECTION WITH MD ROUTE 32 (SYKESVILLE ROAD)GO NORTHWEST ON MD
 AB4714'ROUTE 32 FOR 0.3 MI (0.5 KM) TO THE INTERSECTION WITH NINER ROAD AND
 AB4714'THE GAMBER FIRE STATION AND CARNIVAL GROUNDS. TURN RIGHT ON NINER ROAD
 AB4714'AND GO NORTH FOR 0.1 MI (0.2 KM) TO THE ENTRANCE TO THE CARNIVAL
 AB4714'GROUNDS. TURN LEFT INTO THE CARNIVAL GROUND ENTRANCE AND PROCEED WEST
 AB4714'THROUGH THE BUILDINGS TO A FENCE ON THE WEST EDGE OF THE GROUNDS AND
 AB4714'THE STATION. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AB4714'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 7.0 FT (2.1 M) EAST
 AB4714'OF THE FENCE, 8.0 FT (2.4 M) SOUTHWEST OF THE WESTERNMOST UTILITY POLE
 AB4714'AND 80.0 FT (24.4 M) SOUTHWEST OF THE SOUTHWESTERNMOST CORNER OF THE
 AB4714'WESTERNMOST CARNIVAL STAND BUILDING.
 AB4714
 AB4714                          STATION RECOVERY (2013)
 AB4714
 AB4714'RECOVERY NOTE BY GEOCACHING 2013 (DPB)
 AB4714'MARK IS ABOUT 1 INCH BELOW GRADE AND PARTIALLY COVERED BY GRASS.  IT
 AB4714'IS ABOUT 7' IN A PERPENDICULAR LINE FROM A CABLE FENCE AND I-BAR FENCE
 AB4714'POST, AND IS DIAGONAL FROM THE POLE IN THE DESCRIPTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5091 ***********************************************************************
 JV5091  DESIGNATION -  FORE
 JV5091  PID         -  JV5091
 JV5091  STATE/COUNTY-  MD/KENT
 JV5091  COUNTRY     -  US
 JV5091  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5091
 JV5091                         *CURRENT SURVEY CONTROL
 JV5091  ______________________________________________________________________
 JV5091* NAD 83(1991) POSITION- 39 05 57.04387(N) 076 12 27.99921(W)   ADJUSTED
 JV5091* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5091  ______________________________________________________________________
 JV5091  GEOID HEIGHT    -        -33.463 (meters)                     GEOID18
 JV5091  LAPLACE CORR    -         -2.02  (seconds)                    DEFLEC18
 JV5091  HORZ ORDER      -  THIRD
 JV5091
 JV5091.The horizontal coordinates were established by classical geodetic methods
 JV5091.and adjusted by the National Geodetic Survey in January 1992.
 JV5091
 JV5091.The orthometric height was scaled from a topographic map.
 JV5091
 JV5091.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5091.GEOID18 height accuracy estimate available here.
 JV5091
 JV5091.Click photographs - Photos may exist for this station.
 JV5091
 JV5091.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5091
 JV5091. The following values were computed from the NAD 83(1991) position.
 JV5091
 JV5091;                    North         East     Units Scale Factor Converg.
 JV5091;SPC MD       -   159,313.541   468,527.693   MT  0.99995743   +0 29 50.0
 JV5091;SPC MD       -   522,681.18  1,537,161.27   sFT  0.99995743   +0 29 50.0
 JV5091;UTM  18      - 4,328,476.936   395,560.984   MT  0.99973430   -0 45 42.4
 JV5091
 JV5091!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5091!SPC MD       -   1.00000529  x   0.99995743  =   0.99996272
 JV5091!UTM  18      -   1.00000529  x   0.99973430  =   0.99973959
 JV5091
 JV5091:                Primary Azimuth Mark                     Grid Az
 JV5091:SPC MD       -  ISLAND                                   122 47 24.6
 JV5091:UTM  18      -  ISLAND                                   124 02 57.0
 JV5091
 JV5091_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9556028476(NAD 83)
 JV5091
 JV5091|---------------------------------------------------------------------|
 JV5091| PID    Reference Object                     Distance      Geod. Az  |
 JV5091|                                                           dddmmss.s |
 JV5091| JV5086 ISLAND                              APPROX. 0.6 KM 1231714.6 |
 JV5091|---------------------------------------------------------------------|
 JV5091
 JV5091                          SUPERSEDED SURVEY CONTROL
 JV5091
 JV5091  NAD 83(1986)-  39 05 57.03853(N)    076 12 28.01086(W) AD(       ) 3
 JV5091  NAD 27      -  39 05 56.63600(N)    076 12 29.16700(W) AD(       ) 3
 JV5091  USSD        -  39 05 57.02900(N)    076 12 29.01200(W) AD(       ) 3
 JV5091
 JV5091.Superseded values are not recommended for survey control.
 JV5091
 JV5091.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5091.See file dsdata.pdf to determine how the superseded data were derived.
 JV5091
 JV5091_MARKER: H = DRILL HOLE
 JV5091_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5091_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5091+STABILITY: SURFACE MOTION
 JV5091
 JV5091  HISTORY     - Date     Condition        Report By
 JV5091  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5091  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV5091
 JV5091                          STATION DESCRIPTION
 JV5091
 JV5091'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5091'STATION IS ON THE EASTERN SHORE OF GRAYS INN CREEK, ABOUT 1 MILE NW
 JV5091'OF CHESTER RIVER, AND 3/8 MILE N OF HARRIS WHARF, ON A MARSH POINT,
 JV5091'ABOUT 1 FOOT ABOVE HIGH WATER, 3 YARDS NW OF SHORE, 11 YARDS NNE OF
 JV5091'EXTREME END OF POINT, AND IN CENTER OF TRIANGLE FORMED BY THREE
 JV5091'PINE STUBS DRIVEN FLUSH WITH MARSH TO SUPPORT THEODOLITE.
 JV5091'
 JV5091'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5091'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5091'2 FEET LONG, WITH TOP PROJECTING ABOUT 12 INCHES.  THE LETTERS
 JV5091'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5091'MARK IS CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV5091'INCHES BELOW THE BASE OF THE MONUMENT.
 JV5091'
 JV5091'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5091'FOLLOWS--E GABLE OF HARRIS BARN, 3/8 MILE, S 4 DEG 13 MIN W. N CHIMNEY
 JV5091'OF HOUSE, 1-1/4 MILES, N 65 DEG 32 MIN W. E GABLE OF SMALL HOUSE, 1
 JV5091'1/4 MILES, N 63 DEG 06 MIN W. 2-FOOT SWAMP OAK TREE, 100 YARDS,
 JV5091'N 12 DEG 21 MIN W. SW CORNER OF STRONGS TENANT HOUSE, 3/8 MILE,
 JV5091'S 89 DEG 21 MIN E. LONE 12-INCH SYCAMORE TREE, 3/4 MILE, S 48 DEG
 JV5091'51 MIN E. CHIMNEY OF HARRIS TENANT HOUSE, 5/8 MILE, S 03 DEG 59
 JV5091'MIN E.  LEFT TANGENT OF PILES OF HARRIS (OLD) WHARF, 3/8 MILE,
 JV5091'S 02 DEG 13 MIN E.
 JV5091
 JV5091                          STATION RECOVERY (1939)
 JV5091
 JV5091'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5091'THE STATION NOT RECOVERED.
 JV5091'
 JV5091'THE MARSH POINT HAS BEEN BREAKING UP AND WASHING AWAY RAPIDLY.  A
 JV5091'THOROUGH SEARCH OF THE EXISTING POINT AND THE WATER AREA ADJACENT
 JV5091'FAILED TO RECOVER THE MONUMENT.
 JV5091'
 JV5091'ORIGINAL DESCRIPTION ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1100 ***********************************************************************
 HV1100  DESIGNATION -  FOREST
 HV1100  PID         -  HV1100
 HV1100  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1100  COUNTRY     -  US
 HV1100  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1100
 HV1100                         *CURRENT SURVEY CONTROL
 HV1100  ______________________________________________________________________
 HV1100* NAD 83(1993) POSITION- 38 50 33.62423(N) 076 52 05.40310(W)   ADJUSTED
 HV1100* NAVD 88 ORTHO HEIGHT -    86.084 (meters)      282.43  (feet) ADJUSTED
 HV1100  ______________________________________________________________________
 HV1100  GEOID HEIGHT    -        -32.506 (meters)                     GEOID18
 HV1100  LAPLACE CORR    -         -5.15  (seconds)                    DEFLEC18
 HV1100  DYNAMIC HEIGHT  -         86.036 (meters)      282.27  (feet) COMP
 HV1100  MODELED GRAVITY -    980,071.8   (mgal)                       NAVD 88
 HV1100
 HV1100  HORZ ORDER      -  SECOND
 HV1100  VERT ORDER      -  SECOND    CLASS 0
 HV1100
 HV1100.The horizontal coordinates were established by classical geodetic methods
 HV1100.and adjusted by the National Geodetic Survey in November 1994.
 HV1100
 HV1100.The orthometric height was determined by differential leveling and
 HV1100.adjusted by the NATIONAL GEODETIC SURVEY
 HV1100.in June 1991.
 HV1100
 HV1100.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1100.GEOID18 height accuracy estimate available here.
 HV1100
 HV1100.Click photographs - Photos may exist for this station.
 HV1100
 HV1100.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1100
 HV1100.The dynamic height is computed by dividing the NAVD 88
 HV1100.geopotential number by the normal gravity value computed on the
 HV1100.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1100.degrees latitude (g = 980.6199 gals.).
 HV1100
 HV1100.The modeled gravity was interpolated from observed gravity values.
 HV1100
 HV1100. The following values were computed from the NAD 83(1993) position.
 HV1100
 HV1100;                    North         East     Units Scale Factor Converg.
 HV1100;SPC MD       -   130,549.884   411,444.844   MT  0.99995001   +0 04 57.9
 HV1100;SPC MD       -   428,312.41  1,349,881.96   sFT  0.99995001   +0 04 57.9
 HV1100;UTM  18      - 4,300,976.222   337,868.274   MT  0.99992370   -1 10 19.0
 HV1100
 HV1100!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1100!SPC MD       -   0.99999159  x   0.99995001  =   0.99994160
 HV1100!UTM  18      -   0.99999159  x   0.99992370  =   0.99991529
 HV1100
 HV1100:                Primary Azimuth Mark                     Grid Az
 HV1100:SPC MD       -  EDGE                                     222 27 35.8
 HV1100:UTM  18      -  EDGE                                     223 42 52.7
 HV1100
 HV1100_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3786800976(NAD 83)
 HV1100
 HV1100|---------------------------------------------------------------------|
 HV1100| PID    Reference Object                     Distance      Geod. Az  |
 HV1100|                                                           dddmmss.s |
 HV1100| HV1101 FOREST RM 1                          25.915 METERS 10705     |
 HV1100| HV1103 EDGE                                APPROX. 1.0 KM 2223233.7 |
 HV1100| HV1102 FOREST RM 2                          30.570 METERS 32115     |
 HV1100|---------------------------------------------------------------------|
 HV1100
 HV1100                          SUPERSEDED SURVEY CONTROL
 HV1100
 HV1100  NAD 83(1991)-  38 50 33.62355(N)    076 52 05.40337(W) AD(       ) 2
 HV1100  NAD 83(1986)-  38 50 33.62202(N)    076 52 05.41591(W) AD(       ) 2
 HV1100  NAD 27      -  38 50 33.21551(N)    076 52 06.51777(W) AD(       ) 2
 HV1100  NGVD 29              86.33   (m)          283.2    (f) LEVELING    3  
 HV1100  NGVD 29 (11/26/84)   86.327  (m)          283.22   (f) ADJUSTED    2 0
 HV1100
 HV1100.Superseded values are not recommended for survey control.
 HV1100
 HV1100.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1100.See file dsdata.pdf to determine how the superseded data were derived.
 HV1100
 HV1100_MARKER: DS = TRIANGULATION STATION DISK
 HV1100_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1100_STAMPING: FOREST 1958
 HV1100_MARK LOGO: CGS
 HV1100_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1100+STABILITY: SURFACE MOTION
 HV1100
 HV1100  HISTORY     - Date     Condition        Report By
 HV1100  HISTORY     - 1958     MONUMENTED       CGS
 HV1100  HISTORY     - 1958     GOOD             CGS
 HV1100  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV1100  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV1100
 HV1100                          STATION DESCRIPTION
 HV1100
 HV1100'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1100'STATION IS LOCATED AT THE FORESTVILLE ELEMENTARY SCHOOL IN THE
 HV1100'VILLAGE OF FORESTVILLE WHICH IS ABOUT 9.0 MILES EAST OF THE
 HV1100'CENTER OF WASHINGTON D.C. AND ABOUT 2.0 MILES NORTH OF ANDREWS
 HV1100'AIR FORCE BASE.  STATION IS 50 FEET SOUTHWEST OF FLAG POLE, 70
 HV1100'FEET SOUTHWEST OF APPROXIMATE CENTERLINE OF DRIVEWAY AND 20-1/2
 HV1100'FEET NORTHWEST OF AN EVERGREEN TREE.  THE MARK IS SET FLUSH AND
 HV1100'THE DISK IS STAMPED FOREST 1958.
 HV1100'
 HV1100'REFERENCE MARK NO. 1 IS 53 FEET WEST OF BASKETBALL GOAL POST,
 HV1100'35 FEET SOUTHWEST OF SOUTH EDGE OF BLACK TOP AND AT THE EAST EDGE
 HV1100'OF PARKING LOT.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED
 HV1100'FOREST NO 1 1958.
 HV1100'
 HV1100'REFERENCE MARK NO. 2 IS 42 FEET SOUTHWEST OF APPROXIMATE
 HV1100'CENTERLINE OF DRIVEWAY, 16 FEET SOUTH OF POWERLINE POLE WITH
 HV1100'TRANSFORMER AND 4 FEET NORTHWEST OF WEST END OF PARKING LOT.  THE
 HV1100'MARK IS SET FLUSH AND THE DISK IS STAMPED FOREST NO 2 1958.
 HV1100'
 HV1100'TRAVERSE STATION EDGE IS VG AND MAY BE USED AS AN AZIMUTH MARK.
 HV1100'
 HV1100'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 458 AND 4 WHICH
 HV1100'IS ABOUT 6.0 MILES EAST OF WASHINGTON D.C., GO EASTERLY ON STATE
 HV1100'HIGHWAY NO. 4 FOR 1.7 MILE TO INTERSECTION AT TRAFFIC
 HV1100'LIGHT.  CONTINUE EASTERLY ON STATE HIGHWAY NO. 4 FOR 0.3 MILE TO
 HV1100'SIDE ROAD LEFT (NORTH FOREST EDGE ROAD).  TURN LEFT AND GO
 HV1100'NORTHEASTERLY ON NORTH FOREST EDGE ROAD FOR 0.1 MILE TO
 HV1100'FORESTVILLE ELEMENTARY SCHOOL AND STATION AS DESCRIBED.
 HV1100'
 HV1100'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV1100
 HV1100                          STATION RECOVERY (1958)
 HV1100
 HV1100'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV1100'0.5 MI SE FROM FORESTVILLE.
 HV1100'ABOUT 0.4 MILE SOUTHEAST ALONG STATE HIGHWAY 4 FROM THE POST OFFICE
 HV1100'AT FORESTVILLE, THENCE 0.1 MILE NORTHEAST ALONG NORTH FOREST
 HV1100'EDGE ROAD, NEAR THE FORESTVILLE ELEMENTARY SCHOOL, 105 FEET
 HV1100'SOUTH-SOUTHWEST OF THE MAIN ENTRANCE TO THE SCHOOL, 49 1/2 FEET
 HV1100'SOUTHWEST OF THE FLAGPOLE, 20 1/2 FEET NORTHEAST OF A 6-INCH
 HV1100'CEDAR TREE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 HV1100'GROUND.
 HV1100
 HV1100                          STATION RECOVERY (1971)
 HV1100
 HV1100'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV1100'THE STATION MARK AND RMS WERE SEARCHED FOR BUT NOT RECOVERED ON
 HV1100'THIS DATE.  THE BUILDING IS NO LONGER USED AS A SCHOOL BUILDING.  IT
 HV1100'IS BELIEVED THE STATION AND RM 1 ARE COVERED WITH PAVEMENT AND RM
 HV1100'2 MIGHT BE THERE ALSO BUT THE MARKS COULD NOT BE RECOVERED.
 HV1100'
 HV1100'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV1100'0.5 MILE SOUTHEAST OF FORESTVILLE.
 HV1100
 HV1100                          STATION RECOVERY (1971)
 HV1100
 HV1100'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV1100'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6756 ***********************************************************************
 JV6756  DESIGNATION -  FOREST
 JV6756  PID         -  JV6756
 JV6756  STATE/COUNTY-  MD/HARFORD
 JV6756  COUNTRY     -  US
 JV6756  USGS QUAD   -  PERRYMAN (2016)
 JV6756
 JV6756                         *CURRENT SURVEY CONTROL
 JV6756  ______________________________________________________________________
 JV6756* NAD 83(2011) POSITION- 39 27 35.96598(N) 076 12 28.96151(W)   ADJUSTED
 JV6756* NAD 83(2011) ELLIP HT-   -20.858 (meters)        (06/27/12)   ADJUSTED
 JV6756* NAD 83(2011) EPOCH   -  2010.00
 JV6756* NAVD 88 ORTHO HEIGHT -    12.3   (meters)       40.    (feet) VERTCON3
 JV6756  ______________________________________________________________________
 JV6756  GEOID HEIGHT    -        -33.170 (meters)                     GEOID18
 JV6756  NAD 83(2011) X  -  1,175,539.450 (meters)                     COMP
 JV6756  NAD 83(2011) Y  - -4,788,841.906 (meters)                     COMP
 JV6756  NAD 83(2011) Z  -  4,031,861.693 (meters)                     COMP
 JV6756  LAPLACE CORR    -         -2.36  (seconds)                    DEFLEC18
 JV6756
 JV6756  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6756  Standards:
 JV6756         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6756            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6756  -------------------------------------------------------------------
 JV6756  NETWORK    1.71   5.17           0.71   0.65   2.64      0.41059318
 JV6756  -------------------------------------------------------------------
 JV6756  Click here for local accuracies and other accuracy information.
 JV6756
 JV6756.The horizontal coordinates were established by GPS observations
 JV6756.and adjusted by the National Geodetic Survey in June 2012.
 JV6756
 JV6756.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6756.been affixed to the stable North American tectonic plate. See 
 JV6756.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6756
 JV6756.The horizontal coordinates are valid at the epoch date displayed above
 JV6756.which is a decimal equivalence of Year/Month/Day.
 JV6756
 JV6756.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6756.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6756
 JV6756.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6756.GEOID18 height accuracy estimate available here.
 JV6756
 JV6756.Click photographs - Photos may exist for this station.
 JV6756
 JV6756.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6756
 JV6756.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6756
 JV6756.The ellipsoidal height was determined by GPS observations
 JV6756.and is referenced to NAD 83.
 JV6756
 JV6756. The following values were computed from the NAD 83(2011) position.
 JV6756
 JV6756;                    North         East     Units Scale Factor Converg.
 JV6756;SPC MD       -   199,368.494   468,157.072   MT  1.00000176   +0 29 49.4
 JV6756;SPC MD       -   654,094.80  1,535,945.33   sFT  1.00000176   +0 29 49.4
 JV6756;UTM  18      - 4,368,520.617   396,072.472   MT  0.99973298   -0 46 04.2
 JV6756
 JV6756!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6756!SPC MD       -   1.00000327  x   1.00000176  =   1.00000503
 JV6756!UTM  18      -   1.00000327  x   0.99973298  =   0.99973625
 JV6756
 JV6756:                Primary Azimuth Mark                     Grid Az
 JV6756:SPC MD       -  FOREST AZ MK                             204 25 34.4
 JV6756:UTM  18      -  FOREST AZ MK                             205 41 28.0
 JV6756
 JV6756_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9607268520(NAD 83)
 JV6756
 JV6756|---------------------------------------------------------------------|
 JV6756| PID    Reference Object                     Distance      Geod. Az  |
 JV6756|                                                           dddmmss.s |
 JV6756| JV6757 FOREST AZ MK                        433.540 METERS 2045523.8 |
 JV6756|---------------------------------------------------------------------|
 JV6756
 JV6756                          SUPERSEDED SURVEY CONTROL
 JV6756
 JV6756  NAD 83(2007)-  39 27 35.96605(N)    076 12 28.96225(W) AD(2002.00) 0
 JV6756  ELLIP H (02/10/07)  -20.845  (m)                       GP(2002.00)    
 JV6756  ELLIP H (09/18/02)  -20.824  (m)                       GP(       ) 4 2
 JV6756  NAD 83(1991)-  39 27 35.96548(N)    076 12 28.96283(W) AD(       ) 1
 JV6756  ELLIP H (01/27/92)  -20.859  (m)                       GP(       ) 4 1
 JV6756  NAD 83(1986)-  39 27 35.95934(N)    076 12 28.96897(W) AD(       ) 1
 JV6756  NGVD 29 (06/18/91)   12.5    (m)  UNKNOWN  model used  GPS OBS        
 JV6756
 JV6756.Superseded values are not recommended for survey control.
 JV6756
 JV6756.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6756.See file dsdata.pdf to determine how the superseded data were derived.
 JV6756
 JV6756_MARKER: DD = SURVEY DISK
 JV6756_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6756_STAMPING: 103 FOREST 1989
 JV6756_MARK LOGO: MD-025
 JV6756_PROJECTION: RECESSED 2 CENTIMETERS
 JV6756_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6756_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6756+STABILITY: SURFACE MOTION
 JV6756_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6756+SATELLITE: SATELLITE OBSERVATIONS - June 26, 2024
 JV6756
 JV6756  HISTORY     - Date     Condition        Report By
 JV6756  HISTORY     - 1989     MONUMENTED       RDA
 JV6756  HISTORY     - 20011210 GOOD             USPSQD
 JV6756  HISTORY     - 20130412 GOOD             JARICE
 JV6756  HISTORY     - 20240626 GOOD             BASE9
 JV6756
 JV6756                          STATION DESCRIPTION
 JV6756
 JV6756'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6756'THE STATION IS LOCATED IN SOUTHERN HARFORD COUNTY, MARYLAND ABOUT 0.6
 JV6756'MILE SOUTHWEST OF THE VILLAGE OF PERRYMAN ON STATE HIGHWAY 159.
 JV6756'
 JV6756'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV6756'STATE HIGHWAY 7 IN THE TOWN OF ABERDEEN PROCEED SOUTHWEST ALONG
 JV6756'HIGHWAY 7 1.4 MILES TO ITS INTERSECTION WITH STATE HIGHWAY 159,
 JV6756'PERRYMAN ROAD.  TURN LEFT PROCEED SOUTHWEST ALONG PERRYMAN ROAD 2.0
 JV6756'MILES TO THE STATION ON THE LEFT BETWEEN A PAVED PRIVATE DRIVE AND
 JV6756'PERRYMAN ROAD.
 JV6756'
 JV6756'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6756'ABOUT 1 INCH BELOW GROUND STAMPED 103 FOREST 1989.  IT IS 61.6 FEET
 JV6756'SOUTHWEST FROM G AND E POLE NUMBER 331480, 47.9 FEET NORTHEAST FROM A
 JV6756'MAILBOX NUMBER 1709, AND 15.2 FEET SOUTHEAST FROM THE SOUTHEAST EDGE
 JV6756'OF PAVEMENT OF PERRYMAN ROAD.
 JV6756
 JV6756                          STATION RECOVERY (2001)
 JV6756
 JV6756'RECOVERY NOTE BY US POWER SQUADRON 2001
 JV6756'RECOVERED IN GOOD CONDITION.
 JV6756
 JV6756                          STATION RECOVERY (2013)
 JV6756
 JV6756'RECOVERY NOTE BY J A RICE INC 2013 (JWB)
 JV6756'MAILBOX NUMBER 1709 IN NO LONGER PRESENT.
 JV6756
 JV6756                          STATION RECOVERY (2024)
 JV6756
 JV6756'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2024 (RSD)
 JV6756'UTILITY POLE 331480 HAS BEEN REPLACED BUT KEPT THE SAME NUMBER.  MARK
 JV6756'IS 12.70 M (41.7 FT) SOUTHWEST OF UTILITY POLE, 8.18 M (26.8 FT)
 JV6756'NORTHEAST OF THE CENTER OF A CAST IRON HARTFORD COUNTY SANITARY SEWER
 JV6756'COVER AND 4.46 M (14.6 FT) SOUTHEAST OF THE EDGE OF PAVEMENT OF
 JV6756'PERRYMAND ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6757 ***********************************************************************
 JV6757  DESIGNATION -  FOREST AZ MK
 JV6757  PID         -  JV6757
 JV6757  STATE/COUNTY-  MD/HARFORD
 JV6757  COUNTRY     -  US
 JV6757  USGS QUAD   -  PERRYMAN (2016)
 JV6757
 JV6757                         *CURRENT SURVEY CONTROL
 JV6757  ______________________________________________________________________
 JV6757* NAD 83(2011) POSITION- 39 27 23.21738(N) 076 12 36.60327(W)   ADJUSTED
 JV6757* NAD 83(2011) ELLIP HT-   -21.334 (meters)        (06/27/12)   ADJUSTED
 JV6757* NAD 83(2011) EPOCH   -  2010.00
 JV6757* NAVD 88 ORTHO HEIGHT -    11.8   (meters)       39.    (feet) VERTCON3
 JV6757  ______________________________________________________________________
 JV6757  GEOID HEIGHT    -        -33.174 (meters)                     GEOID18
 JV6757  NAD 83(2011) X  -  1,175,421.501 (meters)                     COMP
 JV6757  NAD 83(2011) Y  - -4,789,127.759 (meters)                     COMP
 JV6757  NAD 83(2011) Z  -  4,031,557.832 (meters)                     COMP
 JV6757  LAPLACE CORR    -         -2.32  (seconds)                    DEFLEC18
 JV6757
 JV6757  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6757  Standards:
 JV6757         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6757            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6757  -------------------------------------------------------------------
 JV6757  NETWORK    1.75   5.23           0.73   0.66   2.67      0.40551231
 JV6757  -------------------------------------------------------------------
 JV6757  Click here for local accuracies and other accuracy information.
 JV6757
 JV6757.The horizontal coordinates were established by GPS observations
 JV6757.and adjusted by the National Geodetic Survey in June 2012.
 JV6757
 JV6757.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6757.been affixed to the stable North American tectonic plate. See 
 JV6757.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6757
 JV6757.The horizontal coordinates are valid at the epoch date displayed above
 JV6757.which is a decimal equivalence of Year/Month/Day.
 JV6757
 JV6757.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6757.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6757
 JV6757.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6757.GEOID18 height accuracy estimate available here.
 JV6757
 JV6757.Click photographs - Photos may exist for this station.
 JV6757
 JV6757.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6757
 JV6757.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6757
 JV6757.The ellipsoidal height was determined by GPS observations
 JV6757.and is referenced to NAD 83.
 JV6757
 JV6757. The following values were computed from the NAD 83(2011) position.
 JV6757
 JV6757;                    North         East     Units Scale Factor Converg.
 JV6757;SPC MD       -   198,973.758   467,977.794   MT  1.00000113   +0 29 44.6
 JV6757;SPC MD       -   652,799.74  1,535,357.15   sFT  1.00000113   +0 29 44.6
 JV6757;UTM  18      - 4,368,130.040   395,884.574   MT  0.99973346   -0 46 08.8
 JV6757
 JV6757!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6757!SPC MD       -   1.00000335  x   1.00000113  =   1.00000448
 JV6757!UTM  18      -   1.00000335  x   0.99973346  =   0.99973681
 JV6757
 JV6757:                Primary Azimuth Mark                     Grid Az
 JV6757:SPC MD       -  FOREST                                   024 25 34.3
 JV6757:UTM  18      -  FOREST                                   025 41 27.7
 JV6757
 JV6757_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9588468130(NAD 83)
 JV6757
 JV6757|---------------------------------------------------------------------|
 JV6757| PID    Reference Object                     Distance      Geod. Az  |
 JV6757|                                                           dddmmss.s |
 JV6757| JV6756 FOREST                              433.540 METERS 0245518.9 |
 JV6757|---------------------------------------------------------------------|
 JV6757
 JV6757                          SUPERSEDED SURVEY CONTROL
 JV6757
 JV6757  NAD 83(2007)-  39 27 23.21745(N)    076 12 36.60401(W) AD(2002.00) 0
 JV6757  ELLIP H (02/10/07)  -21.322  (m)                       GP(2002.00)    
 JV6757  ELLIP H (09/18/02)  -21.302  (m)                       GP(       ) 4 2
 JV6757  NAD 83(1991)-  39 27 23.21690(N)    076 12 36.60459(W) AD(       ) 1
 JV6757  ELLIP H (01/27/92)  -21.336  (m)                       GP(       ) 4 1
 JV6757  NAD 83(1986)-  39 27 23.21075(N)    076 12 36.61072(W) AD(       ) 1
 JV6757  NGVD 29 (06/18/91)   12.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6757
 JV6757.Superseded values are not recommended for survey control.
 JV6757
 JV6757.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6757.See file dsdata.pdf to determine how the superseded data were derived.
 JV6757
 JV6757_MARKER: DZ = AZIMUTH MARK DISK
 JV6757_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6757_STAMPING: 103 FOREST 1989
 JV6757_MARK LOGO: MD-025
 JV6757_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6757_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6757+STABILITY: SURFACE MOTION
 JV6757_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6757+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6757
 JV6757  HISTORY     - Date     Condition        Report By
 JV6757  HISTORY     - 1989     MONUMENTED       RDA
 JV6757  HISTORY     - 20011210 GOOD             NGS
 JV6757
 JV6757                          STATION DESCRIPTION
 JV6757
 JV6757'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6757'TO REACH THE AZIMUTH FROM THE STATION PROCEED SOUTHWEST ALONG PERRYMAN
 JV6757'ROAD 0.2 MILE TO THE MARK ON THE LEFT ON TOP OF A BANK.
 JV6757'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6757'ABOUT 1 INCH BELOW GROUND STAMPED 103 FOREST 1989.  THE MARK IS ABOUT
 JV6757'92 YARDS SOUTHWEST OF THE INTERSECTION OF PERRYMAN ROAD AND CANNING
 JV6757'HOUSE ROAD, 30 YARDS NORTHWEST OF RAILROAD TRACKS, 60.3 FEET SOUTHEAST
 JV6757'FROM G AND E POLE NUMBER 339728, 18.8 FEET SOUTHEAST FROM THE
 JV6757'SOUTHEAST EDGE OF PAVEMENT OF PERRYMAN ROAD AND 1422.36 FEET FROM THE
 JV6757'STATION.
 JV6757
 JV6757                          STATION RECOVERY (2001)
 JV6757
 JV6757'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV6757'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7609 ***********************************************************************
 HV7609  DESIGNATION -  FOREST HEIGHTS WSSC TANK
 HV7609  PID         -  HV7609
 HV7609  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7609  COUNTRY     -  US
 HV7609  USGS QUAD   -  ANACOSTIA (2016)
 HV7609
 HV7609                         *CURRENT SURVEY CONTROL
 HV7609  ______________________________________________________________________
 HV7609* NAD 83(1993) POSITION- 38 48 37.74302(N) 076 59 47.75775(W)   ADJUSTED
 HV7609  ______________________________________________________________________
 HV7609  GEOID HEIGHT    -        -32.286 (meters)                     GEOID18
 HV7609  LAPLACE CORR    -         -2.99  (seconds)                    DEFLEC18
 HV7609  HORZ ORDER      -  THIRD
 HV7609
 HV7609.The horizontal coordinates were established by classical geodetic methods
 HV7609.and adjusted by the National Geodetic Survey in November 1994.
 HV7609
 HV7609.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7609.GEOID18 height accuracy estimate available here.
 HV7609
 HV7609.Click photographs - Photos may exist for this station.
 HV7609
 HV7609.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7609
 HV7609. The following values were computed from the NAD 83(1993) position.
 HV7609
 HV7609;                    North         East     Units Scale Factor Converg.
 HV7609;SPC MD       -   126,968.408   400,295.354   MT  0.99995049   +0 00 07.7
 HV7609;SPC MD       -   416,562.19  1,313,302.34   sFT  0.99995049   +0 00 07.7
 HV7609;UTM  18      - 4,297,639.668   326,643.100   MT  0.99997008   -1 15 06.0
 HV7609
 HV7609_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2664397639(NAD 83)
 HV7609
 HV7609                          SUPERSEDED SURVEY CONTROL
 HV7609
 HV7609  NAD 83(1991)-  38 48 37.74184(N)    076 59 47.75895(W) AD(       ) 3
 HV7609  NAD 83(1986)-  38 48 37.74139(N)    076 59 47.77092(W) AD(       ) 3
 HV7609  NAD 27      -  38 48 37.33241(N)    076 59 48.85918(W) AD(       ) 3
 HV7609
 HV7609.Superseded values are not recommended for survey control.
 HV7609
 HV7609.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7609.See file dsdata.pdf to determine how the superseded data were derived.
 HV7609
 HV7609_MARKER: 53 = ELEVATED TANK
 HV7609
 HV7609  HISTORY     - Date     Condition        Report By
 HV7609  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7609
 HV7609                          STATION DESCRIPTION
 HV7609
 HV7609'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7609'THE STATION IS THE CENTER OF THE TOP OF THE FOREST HEIGHTS
 HV7609'WASHINGTON SUBURBAN SANITATION COMMISSION WATER TANK.  IT IS
 HV7609'LOCATED ON OTTAWA STREET AND HAS AN OVERALL HEIGHT OF 85 FEET.
 HV7609'
 HV7609'TO REACH THE STATION FROM THE INTERSECTION OF LIVINGSTON ROAD
 HV7609'AND ARAPAHOE DRIVE IN FOREST HEIGHTS, GO SOUTH ON ARAPAHOE DRIVE
 HV7609'FOR 0.15 MILE TO MODOC LANE.  TURN LEFT AND GO EAST ON MODOC LANE
 HV7609'FOR 0.05 MILE TO OTTAWA STREET.  TURN RIGHT AND GO SOUTH FOR 0.2
 HV7609'MILE TO THE STATION ON THE LEFT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4827 ***********************************************************************
 JV4827  DESIGNATION -  FOREST HILL
 JV4827  PID         -  JV4827
 JV4827  STATE/COUNTY-  MD/HARFORD
 JV4827  COUNTRY     -  US
 JV4827  USGS QUAD   -  JARRETTSVILLE (2016)
 JV4827
 JV4827                         *CURRENT SURVEY CONTROL
 JV4827  ______________________________________________________________________
 JV4827* NAD 83(1991) POSITION- 39 35 54.42847(N) 076 23 01.39543(W)   ADJUSTED
 JV4827* NAVD 88 ORTHO HEIGHT -   164.1   (meters)      538.    (feet) VERTCON3
 JV4827  ______________________________________________________________________
 JV4827  GEOID HEIGHT    -        -32.664 (meters)                     GEOID18
 JV4827  LAPLACE CORR    -         -2.48  (seconds)                    DEFLEC18
 JV4827  HORZ ORDER      -  FIRST
 JV4827
 JV4827.The horizontal coordinates were established by classical geodetic methods
 JV4827.and adjusted by the National Geodetic Survey in January 1992.
 JV4827
 JV4827.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4827.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4827
 JV4827.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4827.GEOID18 height accuracy estimate available here.
 JV4827
 JV4827.Click photographs - Photos may exist for this station.
 JV4827
 JV4827.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4827
 JV4827. The following values were computed from the NAD 83(1991) position.
 JV4827
 JV4827;                    North         East     Units Scale Factor Converg.
 JV4827;SPC MD       -   214,624.566   452,934.556   MT  1.00002934   +0 23 12.5
 JV4827;SPC MD       -   704,147.43  1,486,002.79   sFT  1.00002934   +0 23 12.5
 JV4827;UTM  18      - 4,384,105.422   381,194.868   MT  0.99977378   -0 52 55.5
 JV4827
 JV4827!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4827!SPC MD       -   0.99997939  x   1.00002934  =   1.00000873
 JV4827!UTM  18      -   0.99997939  x   0.99977378  =   0.99975317
 JV4827
 JV4827:                Primary Azimuth Mark                     Grid Az
 JV4827:SPC MD       -  AIRWAY BEACON 62                         102 05 51.6
 JV4827:UTM  18      -  AIRWAY BEACON 62                         103 21 59.6
 JV4827
 JV4827_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8119484105(NAD 83)
 JV4827
 JV4827|---------------------------------------------------------------------|
 JV4827| PID    Reference Object                     Distance      Geod. Az  |
 JV4827|                                                           dddmmss.s |
 JV4827| JV4825 AIRWAY BEACON 62                    APPROX. 4.6 KM 1022904.1 |
 JV4827| CA9436 FOREST HILL RM 2                     31.023 METERS 18747     |
 JV4827| CA9434 FOREST HILL AZ MK                                  2555619.9 |
 JV4827| CA9435 FOREST HILL RM 1                     29.407 METERS 35646     |
 JV4827|---------------------------------------------------------------------|
 JV4827
 JV4827                          SUPERSEDED SURVEY CONTROL
 JV4827
 JV4827  NAD 83(1986)-  39 35 54.42073(N)    076 23 01.40127(W) AD(       ) 1
 JV4827  NAD 27      -  39 35 54.03100(N)    076 23 02.53700(W) AD(       ) 1
 JV4827  NGVD 29 (07/19/86)  164.3    (m)          539.     (f) VERT ANG       
 JV4827
 JV4827.Superseded values are not recommended for survey control.
 JV4827
 JV4827.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4827.See file dsdata.pdf to determine how the superseded data were derived.
 JV4827
 JV4827_MARKER: DS = TRIANGULATION STATION DISK
 JV4827_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4827_STAMPING: FOREST HILL 1945
 JV4827_MARK LOGO: CGS
 JV4827_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4827+STABILITY: SURFACE MOTION
 JV4827
 JV4827  HISTORY     - Date     Condition        Report By
 JV4827  HISTORY     - 1945     MONUMENTED       CGS
 JV4827  HISTORY     - 1967     MARK NOT FOUND   CGS
 JV4827
 JV4827                          STATION DESCRIPTION
 JV4827
 JV4827'DESCRIBED BY COAST AND GEODETIC SURVEY 1945 (LGS)
 JV4827'STATION IS ABOUT 4-3/4 MILES NW OF BELAIR AND 1 MILE NNE OF THE
 JV4827'VILLAGE OF FOREST HILL, ON THE PROPERTY OF A MR. REEVES.  IT IS
 JV4827'ON THE EAST SIDE OF A COUNTRY ROAD, 15.4 FEET EAST AND DIRECTLY
 JV4827'OPPOSITE A CEDAR TREE IN THE FENCE LINE ALONG EAST SIDE OF ROAD.
 JV4827'TO REACH FROM FOREST HILL, PROCEED 0.7 MILE NORTH ON OILED ROAD TO
 JV4827'ROCKS, TURN EAST ONTO OILED T-ROAD TO CHESTNUT HILL AND PROCEED
 JV4827'0.35 MILE AND TURN LEFT (NORTH) INTO NARROW COUNTRY ROAD.
 JV4827'FOLLOW THIS ABOUT 0.15 MILE TO TOP OF GRADE OPPOSITE STATION ON
 JV4827'EAST SIDE OF ROAD.  THE SURFACE MARK IS ABOUT 1 FOOT BELOW
 JV4827'GROUND.
 JV4827'
 JV4827'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 JV4827'DISKS SET IN CONCRETE.
 JV4827'
 JV4827'REFERENCE MARK 1 IS NORTH OF STATION IN FENCE LINE ON EAST SIDE
 JV4827'OF ROAD.  REFERENCE MARK 2 IS SOUTH OF STATION IN SAME FENCE LINE,
 JV4827'AND THE AZIMUTH MARK IS WEST OF STATION, ABOUT 0.8 MILE NORTH
 JV4827'ALONG THE ROAD TO ROCKS FROM THE VILLAGE OF FOREST HILL, 14 FT.
 JV4827'EAST OF CENTERLINE OF ROAD, 120 YARDS NORTH OF CEMETERY ON SAME
 JV4827'SIDE OF ROAD, 5 FT. SE OF TELEPHONE POLE NO. 7629 AND AT THE
 JV4827'RIGHT OF WAY FENCE.
 JV4827'
 JV4827'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV4827
 JV4827                          STATION RECOVERY (1967)
 JV4827
 JV4827'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JCB)
 JV4827'STATION WAS SEARCHED FOR BUT NOT RECOVERED.  THE COUNTRY ROAD
 JV4827'REFERRED TO IN THE DESCRIPTION IS NO LONGER USED.  THE REFERENCE
 JV4827'MARKS HAD BEEN BULLDOZED OFF INTO THE OLD ROADBED AND THE DISKS
 JV4827'WERE RECLAIMED AT THIS TIME.  THE FENCE AND THE CEDAR TREE
 JV4827'REFERRED TO IN THE DESCRIPTION HAVE ALSO BEEN BULLDOZED OFF INTO
 JV4827'THE OLD ROADBED.  THE PROPERTY OWNER, MR. REEVES, STATED THAT
 JV4827'THE STATION MARK WAS NOT SET DEEP ENOUGH AND HAD BEEN PLOWED
 JV4827'UP.  EXTENSIVE PROBING IN THE CULTIVATED FIELD WAS TO NO
 JV4827'AVAIL.  A NEW HOME IS BEING CONSTRUCTED AT THE SITE OF THE
 JV4827'AZIMUTH MARK WHICH NECESSITATED THE RELOCATING OF SAME, SO THE
 JV4827'MARK WAS DESTROYED AT THIS TIME.
 JV4827'
 JV4827'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4827'1/2 MILE EAST OF FOREST HILL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1101 ***********************************************************************
 HV1101  DESIGNATION -  FOREST RM 1
 HV1101  PID         -  HV1101
 HV1101  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1101  COUNTRY     -  US
 HV1101  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1101
 HV1101                         *CURRENT SURVEY CONTROL
 HV1101  ______________________________________________________________________
 HV1101* NAD 83(1986) POSITION- 38 50 33.38   (N) 076 52 04.37   (W)   HD_HELD1
 HV1101* NAVD 88 ORTHO HEIGHT -    86.365 (meters)      283.35  (feet) ADJUSTED
 HV1101  ______________________________________________________________________
 HV1101  GEOID HEIGHT    -        -32.507 (meters)                     GEOID18
 HV1101  DYNAMIC HEIGHT  -         86.317 (meters)      283.19  (feet) COMP
 HV1101  MODELED GRAVITY -    980,071.8   (mgal)                       NAVD 88
 HV1101
 HV1101  VERT ORDER      -  SECOND    CLASS 0
 HV1101
 HV1101.The horizontal coordinates were determined by differentially corrected
 HV1101.hand held GPS observations or other comparable positioning techniques
 HV1101.and have an estimated accuracy of +/- 3 meters.
 HV1101
 HV1101.The orthometric height was determined by differential leveling and
 HV1101.adjusted by the NATIONAL GEODETIC SURVEY
 HV1101.in June 1991.
 HV1101
 HV1101.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1101.GEOID18 height accuracy estimate available here.
 HV1101
 HV1101.Click photographs - Photos may exist for this station.
 HV1101
 HV1101.The dynamic height is computed by dividing the NAVD 88
 HV1101.geopotential number by the normal gravity value computed on the
 HV1101.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1101.degrees latitude (g = 980.6199 gals.).
 HV1101
 HV1101.The modeled gravity was interpolated from observed gravity values.
 HV1101
 HV1101;                    North         East    Units  Estimated Accuracy
 HV1101;SPC MD       -   130,542.4     411,469.8     MT  (+/- 3 meters HH1 GPS) 
 HV1101
 HV1101_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3789300968(NAD 83)
 HV1101
 HV1101                          SUPERSEDED SURVEY CONTROL
 HV1101
 HV1101  NGVD 29 (11/26/84)   86.608  (m)          284.15   (f) ADJUSTED    2 0
 HV1101
 HV1101.Superseded values are not recommended for survey control.
 HV1101
 HV1101.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1101.See file dsdata.pdf to determine how the superseded data were derived.
 HV1101
 HV1101_MARKER: DR = REFERENCE MARK DISK
 HV1101_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1101_STAMPING: FOREST NO 1 1958
 HV1101_MARK LOGO: CGS
 HV1101_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1101+STABILITY: SURFACE MOTION
 HV1101
 HV1101  HISTORY     - Date     Condition        Report By
 HV1101  HISTORY     - 1958     MONUMENTED       CGS
 HV1101  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV1101
 HV1101                          STATION DESCRIPTION
 HV1101
 HV1101'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1101'0.5 MI SE FROM FORESTVILLE.
 HV1101'ABOUT 0.4 MILE SOUTHEAST ALONG STATE HIGHWAY 4 FROM THE POST
 HV1101'OFFICE AT FORESTVILLE, THENCE 0.1 MILE NORTHEAST ALONG THE NORTH
 HV1101'FOREST EDGE ROAD, NEAR THE FORESTVILLE ELEMENTARY SCHOOL, 53
 HV1101'FEET WEST OF A BASKETBALL GOAL POST, 35 FEET SOUTHWEST OF THE
 HV1101'SOUTHWEST EDGE OF A BLACK TOP FOR A PARKING AREA, 85 FEET
 HV1101'SOUTHEAST OF THE STATION AND SET IN THE TOP OF A CONCRETE POST
 HV1101'FLUSH WITH THE GROUND.
 HV1101
 HV1101                          STATION RECOVERY (1971)
 HV1101
 HV1101'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV1101'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1102 ***********************************************************************
 HV1102  DESIGNATION -  FOREST RM 2
 HV1102  PID         -  HV1102
 HV1102  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1102  COUNTRY     -  US
 HV1102  USGS QUAD   -  UPPER MARLBORO (2016)
 HV1102
 HV1102                         *CURRENT SURVEY CONTROL
 HV1102  ______________________________________________________________________
 HV1102* NAD 83(1986) POSITION- 38 50 34.40   (N) 076 52 06.20   (W)   HD_HELD1
 HV1102* NAVD 88 ORTHO HEIGHT -    85.544 (meters)      280.66  (feet) ADJUSTED
 HV1102  ______________________________________________________________________
 HV1102  GEOID HEIGHT    -        -32.505 (meters)                     GEOID18
 HV1102  DYNAMIC HEIGHT  -         85.497 (meters)      280.50  (feet) COMP
 HV1102  MODELED GRAVITY -    980,071.8   (mgal)                       NAVD 88
 HV1102
 HV1102  VERT ORDER      -  SECOND    CLASS 0
 HV1102
 HV1102.The horizontal coordinates were determined by differentially corrected
 HV1102.hand held GPS observations or other comparable positioning techniques
 HV1102.and have an estimated accuracy of +/- 3 meters.
 HV1102
 HV1102.The orthometric height was determined by differential leveling and
 HV1102.adjusted by the NATIONAL GEODETIC SURVEY
 HV1102.in June 1991.
 HV1102
 HV1102.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1102.GEOID18 height accuracy estimate available here.
 HV1102
 HV1102.Click photographs - Photos may exist for this station.
 HV1102
 HV1102.The dynamic height is computed by dividing the NAVD 88
 HV1102.geopotential number by the normal gravity value computed on the
 HV1102.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1102.degrees latitude (g = 980.6199 gals.).
 HV1102
 HV1102.The modeled gravity was interpolated from observed gravity values.
 HV1102
 HV1102;                    North         East    Units  Estimated Accuracy
 HV1102;SPC MD       -   130,573.8     411,425.6     MT  (+/- 3 meters HH1 GPS) 
 HV1102
 HV1102_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3784901000(NAD 83)
 HV1102
 HV1102                          SUPERSEDED SURVEY CONTROL
 HV1102
 HV1102  NGVD 29 (11/26/84)   85.787  (m)          281.45   (f) ADJUSTED    2 0
 HV1102
 HV1102.Superseded values are not recommended for survey control.
 HV1102
 HV1102.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1102.See file dsdata.pdf to determine how the superseded data were derived.
 HV1102
 HV1102_MARKER: DR = REFERENCE MARK DISK
 HV1102_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1102_STAMPING: FOREST NO 2 1958
 HV1102_MARK LOGO: CGS
 HV1102_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1102+STABILITY: SURFACE MOTION
 HV1102
 HV1102  HISTORY     - Date     Condition        Report By
 HV1102  HISTORY     - 1958     MONUMENTED       CGS
 HV1102  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV1102
 HV1102                          STATION DESCRIPTION
 HV1102
 HV1102'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1102'0.5 MI SE FROM FORESTVILLE.
 HV1102'ABOUT 0.4 MILE SOUTHEAST ALONG STATE HIGHWAY 4 FROM THE POST
 HV1102'OFFICE AT FORESTVILLE, THENCE 0.1 MILE NORTHEAST ALONG THE NORTH
 HV1102'FOREST EDGE ROAD, NEAR THE FORESTVILLE ELEMENTARY SCHOOL, 42
 HV1102'FEET SOUTHWEST OF THE CENTER LINE OF A DRIVEWAY LEADING TO SCHOOL,
 HV1102'16 FEET SOUTH OF A POWER LINE POLE WITH A TRANSFORMER, 100.3
 HV1102'FEET NORTHWEST OF THE STATION AND SET IN THE TOP OF A CONCRETE
 HV1102'POST FLUSH WITH THE GROUND.
 HV1102
 HV1102                          STATION RECOVERY (1971)
 HV1102
 HV1102'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV1102'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5143 ***********************************************************************
 JV5143  DESIGNATION -  FORK
 JV5143  PID         -  JV5143
 JV5143  STATE/COUNTY-  MD/KENT
 JV5143  COUNTRY     -  US
 JV5143  USGS QUAD   -  SWAN POINT (2016)
 JV5143
 JV5143                         *CURRENT SURVEY CONTROL
 JV5143  ______________________________________________________________________
 JV5143* NAD 83(1991) POSITION- 39 09 02.11892(N) 076 15 22.72935(W)   ADJUSTED
 JV5143* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5143  ______________________________________________________________________
 JV5143  GEOID HEIGHT    -        -33.314 (meters)                     GEOID18
 JV5143  LAPLACE CORR    -         -2.05  (seconds)                    DEFLEC18
 JV5143  HORZ ORDER      -  THIRD
 JV5143
 JV5143.The horizontal coordinates were established by classical geodetic methods
 JV5143.and adjusted by the National Geodetic Survey in January 1992.
 JV5143
 JV5143.The orthometric height was scaled from a topographic map.
 JV5143
 JV5143.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5143.GEOID18 height accuracy estimate available here.
 JV5143
 JV5143.Click photographs - Photos may exist for this station.
 JV5143
 JV5143.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5143
 JV5143. The following values were computed from the NAD 83(1991) position.
 JV5143
 JV5143;                    North         East     Units Scale Factor Converg.
 JV5143;SPC MD       -   164,985.200   464,282.891   MT  0.99996132   +0 28 00.3
 JV5143;SPC MD       -   541,288.94  1,523,234.78   sFT  0.99996132   +0 28 00.3
 JV5143;UTM  18      - 4,334,239.262   391,442.780   MT  0.99974510   -0 47 35.8
 JV5143
 JV5143!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5143!SPC MD       -   1.00000527  x   0.99996132  =   0.99996659
 JV5143!UTM  18      -   1.00000527  x   0.99974510  =   0.99975036
 JV5143
 JV5143:                Primary Azimuth Mark                     Grid Az
 JV5143:SPC MD       -  TAVERN                                   262 16 14.6
 JV5143:UTM  18      -  TAVERN                                   263 31 50.7
 JV5143
 JV5143_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9144234239(NAD 83)
 JV5143
 JV5143|---------------------------------------------------------------------|
 JV5143| PID    Reference Object                     Distance      Geod. Az  |
 JV5143|                                                           dddmmss.s |
 JV5143| JV5144 SPIKE                               APPROX. 0.6 KM 0200556.6 |
 JV5143| JV5140 RAIL                                389.324 METERS 07256     |
 JV5143| JV5142 TREASURE                            APPROX. 0.5 KM 1553055.7 |
 JV5143| JV5151 TAVERN                              APPROX. 0.9 KM 2624414.9 |
 JV5143| JV5148 ELLIASON                            459.357 METERS 3442857.5 |
 JV5143|---------------------------------------------------------------------|
 JV5143
 JV5143                          SUPERSEDED SURVEY CONTROL
 JV5143
 JV5143  NAD 83(1986)-  39 09 02.11305(N)    076 15 22.74003(W) AD(       ) 3
 JV5143  NAD 27      -  39 09 01.73200(N)    076 15 23.91600(W) AD(       ) 3
 JV5143  USSD        -  39 09 02.08300(N)    076 15 23.74300(W) AD(       ) 3
 JV5143
 JV5143.Superseded values are not recommended for survey control.
 JV5143
 JV5143.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5143.See file dsdata.pdf to determine how the superseded data were derived.
 JV5143
 JV5143_MARKER: Z = SEE DESCRIPTION
 JV5143_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5143_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5143+STABILITY: SURFACE MOTION
 JV5143
 JV5143  HISTORY     - Date     Condition        Report By
 JV5143  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5143  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5143
 JV5143                          STATION DESCRIPTION
 JV5143
 JV5143'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5143'ON THE WESTERN SHORE OF SWAN CREEK, ABOUT 1/2 MILE NNW OF ROCK
 JV5143'HALL LANDING, AND 3/8 MILE NW OF THE ENTRANCE TO THE HAVEN, ON
 JV5143'MARSH LAND, ABOUT 2 FEET ABOVE HIGH WATER, 25 YARDS INSHORE, AND
 JV5143'200 YARDS FROM EXTREME S END OF POINT.  STATION IS MARKED BY A
 JV5143'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 JV5143'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 JV5143'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.S. AND
 JV5143'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS
 JV5143'CENTER OF 2-INCH TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE
 JV5143'BASE OF MONUMENT.  DISTANCES AND AZIMUTH TO VARIOUS POINTS OF
 JV5143'REFERENCE ARE AS FOLLOWS--CHIMNEY OF SULLIVANS HOUSE, 3/4 MILE, S
 JV5143'7 DEG 45 MIN W.  CHIMNEY OF HOUSE, 1/2 MILE, S 27 DEG 38 MIN W. E
 JV5143'CHIMNEY OF STRONGS HOUSE, 5/8 MILE, S 81 DEG 26 MIN W.  CHIMNEY OF
 JV5143'ELLIASONS HOUSE, 1/4 MILE, N 84 DEG 47 MIN W.  NAIL IN BLAZE IN
 JV5143'3-INCH LOCUST TREE, 11.15 METERS (36.6 FEET), N 29 DEG 51 MIN E.
 JV5143'CHIMNEY OF SWATSKAS TENANT HOUSE, 5/8 MILE, N 48 DEG 23 MIN E.  N
 JV5143'CHIMNEY OF BIGLOWS HOUSE, 7/8 MILE, N 75 DEG 28 MIN E.  N CHIMNEY
 JV5143'OF HOUSE, 5/8 MILE, S 62 DEG 23 MIN E.  ROCK HALL M.E. CHURCH
 JV5143'SPIRE, 1-1/2 MILES, S 49 DEG 47 MIN E. HIGHEST CHIMNEY OF HOUSE, 1
 JV5143'MILE S 33 DEG 54 MIN E.  E CHIMNEY OF FRANK AYERS HOUSE, 3/4 MILE,
 JV5143'S 25 DEG 4 MIN E.  E CHIMNEY OF GEORGIA AYERS HOUSE.  3/8 MILE, S
 JV5143'9 DEG 59 MIN E.
 JV5143
 JV5143                          STATION RECOVERY (1941)
 JV5143
 JV5143'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5143'SEARCHED FOR STATION FOR OVER AN HOUR THROUGH HEAVY BRUSH.
 JV5143'
 JV5143'NO REFERENCE TREES COULD BE FOUND.  MARSH HAS WASHED CONSIDERABLY,
 JV5143'MAKING DESCRIPTION USELESS.  RECOMMEND THAT STATION BE CLASSIFIED
 JV5143'AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6768 ***********************************************************************
 HV6768  DESIGNATION -  FORR MSFC 1908
 HV6768  PID         -  HV6768
 HV6768  STATE/COUNTY-  MD/ST MARYS
 HV6768  COUNTRY     -  US
 HV6768  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6768
 HV6768                         *CURRENT SURVEY CONTROL
 HV6768  ______________________________________________________________________
 HV6768* NAD 83(1993) POSITION- 38 24 47.64819(N) 076 36 26.52936(W)   ADJUSTED
 HV6768* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6768  ______________________________________________________________________
 HV6768  GEOID HEIGHT    -        -33.915 (meters)                     GEOID18
 HV6768  LAPLACE CORR    -         -5.32  (seconds)                    DEFLEC18
 HV6768  HORZ ORDER      -  SECOND
 HV6768
 HV6768.The horizontal coordinates were established by classical geodetic methods
 HV6768.and adjusted by the National Geodetic Survey in November 1994.
 HV6768
 HV6768.The orthometric height was scaled from a topographic map.
 HV6768
 HV6768.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6768.GEOID18 height accuracy estimate available here.
 HV6768
 HV6768.Click photographs - Photos may exist for this station.
 HV6768
 HV6768.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6768
 HV6768. The following values were computed from the NAD 83(1993) position.
 HV6768
 HV6768;                    North         East     Units Scale Factor Converg.
 HV6768;SPC MD       -    82,946.000   434,290.597   MT  0.99998223   +0 14 47.1
 HV6768;SPC MD       -   272,132.00  1,424,835.07   sFT  0.99998223   +0 14 47.1
 HV6768;UTM  18      - 4,252,889.203   359,668.606   MT  0.99984252   -0 59 55.9
 HV6768
 HV6768!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6768!SPC MD       -   1.00000521  x   0.99998223  =   0.99998744
 HV6768!UTM  18      -   1.00000521  x   0.99984252  =   0.99984772
 HV6768
 HV6768:                Primary Azimuth Mark                     Grid Az
 HV6768:SPC MD       -  FIGHT MSFC 1908                          312 37 13.7
 HV6768:UTM  18      -  FIGHT MSFC 1908                          313 51 56.7
 HV6768
 HV6768_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5966852889(NAD 83)
 HV6768
 HV6768|---------------------------------------------------------------------|
 HV6768| PID    Reference Object                     Distance      Geod. Az  |
 HV6768|                                                           dddmmss.s |
 HV6768| HV6850 FIGHT MSFC 1908                     APPROX. 3.1 KM 3125200.8 |
 HV6768|---------------------------------------------------------------------|
 HV6768
 HV6768                          SUPERSEDED SURVEY CONTROL
 HV6768
 HV6768  NAD 83(1991)-  38 24 47.64825(N)    076 36 26.53038(W) AD(       ) 2
 HV6768  NAD 83(1986)-  38 24 47.64779(N)    076 36 26.54424(W) AD(       ) 2
 HV6768  NAD 27      -  38 24 47.19700(N)    076 36 27.70100(W) AD(       ) 2
 HV6768  USSD        -  38 24 47.55800(N)    076 36 27.44200(W) AD(       ) 3
 HV6768
 HV6768.Superseded values are not recommended for survey control.
 HV6768
 HV6768.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6768.See file dsdata.pdf to determine how the superseded data were derived.
 HV6768
 HV6768_MARKER: H = DRILL HOLE
 HV6768_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6768_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6768+STABILITY: SURFACE MOTION
 HV6768
 HV6768  HISTORY     - Date     Condition        Report By
 HV6768  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6768  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV6768  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6768
 HV6768                          STATION DESCRIPTION
 HV6768
 HV6768'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6768'STATION IS ON THE SW SHORE OF PATUXENT RIVER JUST BELOW FORREST
 HV6768'WHARF, ABOUT 1 FOOT ABOVE HIGH-WATER MARK, ON SAND AND GRASSLAND,
 HV6768'7 YARDS S FROM EXTREME HIGH-WATER MARK, 45 YARDS SE OF LAND END OF
 HV6768'FORREST WHARF, 70 YARDS E BY S OF AN OLD 2 1/2-STORY BUILDING,
 HV6768'AND 65 YARDS NE OF BUILDING.  STATION IS MARKED BY A HOLE IN THE
 HV6768'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6768'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV6768'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6768'COUNTER-SUNK IN TOP OF POST.  DISTANCES AND BEARINGS FROM THE
 HV6768'STATION TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NEAR
 HV6768'CORNER OF BUILDING, 65 YARDS, S 51 DEG 44 MIN W. OUTSIDE CHIMNEY
 HV6768'OF HOUSE ON HILL, 1/8 MILE, S 65 DEG 14 MIN W. CURVE IN ROAD UP
 HV6768'HILL, 200 YARDS, S 81 DEG 17 MIN W.  W CORNER OF OLD 2 1/2-STORY
 HV6768'BUILDING, 70 YARDS, S 89 DEG 44 MIN W.  LAND END OF WHARF, 45
 HV6768'YARDS, N 60 DEG 53 MIN W.  WINDMILL, 2-3/4 MILES, N 47 DEG 8 MIN
 HV6768'W.  LEFT CORNER OF LEFT CHIMNEY OF BRICK HOUSE, 3 MILES, N 47 DEG
 HV6768'3 MIN W.  NEAR END OF PEAK OF ROOF OF FORREST WHARF HOUSE, 1/8
 HV6768'MILE, N 27 DEG 9 MIN E.  RIGHT TANGENT OF ROOF, 2-1/2 MILES, N 74
 HV6768'DEG 15 MIN E.  NEAR CORNER OF HOUSE ON HILLSIDE, 180 YARDS, S 40
 HV6768'DEG 9 MIN E.
 HV6768
 HV6768                          STATION RECOVERY (1930)
 HV6768
 HV6768'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6768'STATION APPARENTLY COVERED WITH SAND OR DESTROYED.  NATIVES REPORT
 HV6768'SAND AND GRAVEL HAULED AWAY FOR COMMERCIAL PURPOSES IN THAT VICINITY.
 HV6768
 HV6768                          STATION RECOVERY (1943)
 HV6768
 HV6768'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6768'THE LOCALITY WAS VISITED AND A THOROUGH SEARCH WAS MADE BUT THE
 HV6768'STATION WAS NOT RECOVERED.  IT WAS FOUND THAT THE SHORELINE WAS
 HV6768'WASHED AWAY FOR MORE THAN SEVEN YARDS DURING A STORM IN AUGUST
 HV6768'1933 AND NOTHING REMAINS OF THE OLD WHARF.  IT IS BELIEVED THAT
 HV6768'THE STATION HAS WASHED OUT AND IT IS RECOMMENDED THAT IT BE
 HV6768'CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2465 ***********************************************************************
 HV2465  DESIGNATION -  FORT
 HV2465  PID         -  HV2465
 HV2465  STATE/COUNTY-  MD/PRINCE GEORGES
 HV2465  COUNTRY     -  US
 HV2465  USGS QUAD   -  MOUNT VERNON (2019)
 HV2465
 HV2465                         *CURRENT SURVEY CONTROL
 HV2465  ______________________________________________________________________
 HV2465* NAD 83(1993) POSITION- 38 42 44.20090(N) 077 02 12.93994(W)   ADJUSTED
 HV2465* NAVD 88 ORTHO HEIGHT -     1.47  (+/-2cm)        4.8   (feet) VERTCON3
 HV2465  ______________________________________________________________________
 HV2465  GEOID HEIGHT    -        -32.428 (meters)                     GEOID18
 HV2465  LAPLACE CORR    -         -2.43  (seconds)                    DEFLEC18
 HV2465  HORZ ORDER      -  THIRD
 HV2465  VERT ORDER      -  FIRST     CLASS II (See Below)
 HV2465
 HV2465.The horizontal coordinates were established by classical geodetic methods
 HV2465.and adjusted by the National Geodetic Survey in November 1994.
 HV2465
 HV2465.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV2465.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV2465
 HV2465.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2465.GEOID18 height accuracy estimate available here.
 HV2465
 HV2465.The vertical order pertains to the NGVD 29 superseded value.
 HV2465
 HV2465.Click photographs - Photos may exist for this station.
 HV2465
 HV2465.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV2465
 HV2465. The following values were computed from the NAD 83(1993) position.
 HV2465
 HV2465;                    North         East     Units Scale Factor Converg.
 HV2465;SPC MD       -   116,067.620   396,788.314   MT  0.99995390   -0 01 23.4
 HV2465;SPC MD       -   380,798.52  1,301,796.33   sFT  0.99995390   -0 01 23.4
 HV2465;SPC VA N     - 2,117,075.705 3,627,240.600   MT  0.99994975   +0 54 47.3
 HV2465;SPC VA N     - 6,945,772.54 11,900,371.87   sFT  0.99994975   +0 54 47.3
 HV2465;UTM  18      - 4,286,817.857   322,898.535   MT  0.99998625   -1 16 27.3
 HV2465
 HV2465!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV2465!SPC MD       -   1.00000486  x   0.99995390  =   0.99995876
 HV2465!SPC VA N     -   1.00000486  x   0.99994975  =   0.99995461
 HV2465!UTM  18      -   1.00000486  x   0.99998625  =   0.99999111
 HV2465
 HV2465:                Primary Azimuth Mark                     Grid Az
 HV2465:SPC MD       -  RIVERSIDE END OF DOCK                    023 06 21.0
 HV2465:SPC VA N     -  RIVERSIDE END OF DOCK                    022 10 10.3
 HV2465:UTM  18      -  RIVERSIDE END OF DOCK                    024 21 24.9
 HV2465
 HV2465_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2289886817(NAD 83)
 HV2465
 HV2465|---------------------------------------------------------------------|
 HV2465| PID    Reference Object                     Distance      Geod. Az  |
 HV2465|                                                           dddmmss.s |
 HV2465| HV4966 RIVERSIDE END OF DOCK               APPROX. 1.2 KM 0230457.6 |
 HV2465| DC6292 FORT RM 2                            39.423 METERS 04849     |
 HV2465| HV4940 FORT WASHINGTON LIGHT                 3.432 METERS 10038     |
 HV2465| DC6293 FORT RM 3                            29.430 METERS 15603     |
 HV2465| DC6291 FORT RM                              26.050 METERS 16631     |
 HV2465| HV4963 CAT 2                               317.095 METERS 17741     |
 HV2465| HV4962 CAT                                 320.320 METERS 17944     |
 HV2465| HV4971 UPPER POTOMAC RIVER LT 77           APPROX. 1.2 KM 2381135.7 |
 HV2465| HV5024 FORT BELVOIR BLDG 509 TANK          APPROX. 9.0 KM 2503717.6 |
 HV2465| HV5025 FORT BELVOIR BLDG 704 TANK          APPROX. 9.3 KM 2565233.2 |
 HV2465| HV4916 FORT HUNT YELLOW WATER TANK         APPROX. 1.2 KM 2921316.2 |
 HV2465| HV4550 ALEXANDRIA SHIPYARDS BLACK TK       APPROX. 9.1 KM 3573330.0 |
 HV2465| HV4552 ALEXANDRIA WESTERLY TWIN STKS       APPROX. 9.4 KM 3573742.5 |
 HV2465|---------------------------------------------------------------------|
 HV2465
 HV2465                          SUPERSEDED SURVEY CONTROL
 HV2465
 HV2465  NAD 83(1991)-  38 42 44.19883(N)    077 02 12.94198(W) AD(       ) 3
 HV2465  NAD 83(1986)-  38 42 44.20091(N)    077 02 12.95455(W) AD(       ) 3
 HV2465  NAD 27      -  38 42 43.78100(N)    077 02 14.04300(W) AD(       ) 3
 HV2465  NGVD 29               1.74   (m)            5.7    (f) LEVELING    3  
 HV2465  NGVD 29 (11/26/84)    1.740  (m)            5.71   (f) ADJUSTED    1 2
 HV2465
 HV2465.Superseded values are not recommended for survey control.
 HV2465
 HV2465.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2465.See file dsdata.pdf to determine how the superseded data were derived.
 HV2465
 HV2465_MARKER: DS = TRIANGULATION STATION DISK
 HV2465_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2465_STAMPING: FORT 1928
 HV2465_MARK LOGO: CGS
 HV2465_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2465+STABILITY: SURFACE MOTION
 HV2465
 HV2465  HISTORY     - Date     Condition        Report By
 HV2465  HISTORY     - 1928     MONUMENTED       CGS
 HV2465  HISTORY     - 1931     GOOD             PBPP
 HV2465  HISTORY     - 1959     SEE DESCRIPTION  CGS
 HV2465  HISTORY     - 1959     GOOD             CGS
 HV2465  HISTORY     - 1965     GOOD             CGS
 HV2465  HISTORY     - 1972     GOOD             NGS
 HV2465  HISTORY     - 1974     GOOD             NGS
 HV2465
 HV2465                          STATION DESCRIPTION
 HV2465
 HV2465'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV2465'STATION IS ON THE E SHORE OF POTOMAC RIVER ON THE POINT AT SITE
 HV2465'OF DOCK AT FORT WASHINGTON, 1 METER W OF THE FOG AND LIGHT
 HV2465'TOWER.  A CONCRETE BLOCK FORMERLY USED AS SOME FORM OF MOUNT AT
 HV2465'THIS POINT WITH A STANDARD DISK STATION MARK IN ITS CENTER WAS
 HV2465'USED AS STATION MARK, STAMPED FORT 1928 AND IS FLUSH WITH
 HV2465'SURFACE OF GROUND.
 HV2465'
 HV2465'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV2465'CONCRETE.
 HV2465'
 HV2465'REFERENCE MARK (NO NUMBER) IS ON THE GRASS ENCLOSURE E OF
 HV2465'STATION BETWEEN DOCK HOUSE BUILDING AND FIRST HOUSE UP THE
 HV2465'HILL.  STAMPED FORT 1928 AND PROJECTS SEVERAL INCHES ABOVE
 HV2465'SURFACE.
 HV2465'
 HV2465'THE NEAREST FACE (N) OF AN IRON POST WITH A 15-INCH MORTAR
 HV2465'BALL ON ITS TOP IS 11.78 METERS FROM STATION IN SOUTHERLY DIRECTION.
 HV2465'
 HV2465'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV2465
 HV2465                          STATION RECOVERY (1931)
 HV2465
 HV2465'RECOVERY NOTE BY PUB BLDGS AND PARKS 1931
 HV2465'AT FORT WASHINGTON.
 HV2465'AT FORT WASHINGTON, PRINCE GEORGES COUNTY, AT THE WHARF, 5 FEET
 HV2465'WEST OF THE FOG BELL AND THE LIGHT TOWER, AND JUST OFF THE
 HV2465'ROADWAY.  A STANDARD TRINAGULATION-STATION DISK, STAMPED FORT
 HV2465'1928 AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 HV2465
 HV2465                          STATION RECOVERY (1959)
 HV2465
 HV2465'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (RST)
 HV2465'STATION RECOVERED IN GOOD CONDITION.  BOTH REFERENCE MARKS WERE
 HV2465'SEARCHED FOR, FOR ABOUT AN HOUR BUT.  THE POSSIBILITY OF NEW
 HV2465'LAND SCAPING HAS RENDERED THEM LOST.  THE ORIGINAL DESCRIPTION
 HV2465'BY C.P. IN 1928 IS COMPLETE AND ADEQUATE WITH THE FOLLOWING
 HV2465'EXCEPTIONS.  THE HOUSES AND DOCK REFERED TO ARE NO LONGER IN
 HV2465'EXISTANCE.
 HV2465
 HV2465                          STATION RECOVERY (1959)
 HV2465
 HV2465'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV2465'THE STATION WAS RECOVERED AS DESCRIBED AND IN GOOD CONDITION.  THE
 HV2465'DISC IS FLUSH WITH THE GROUND, 33.5 FEET EAST OF THE CONCRETE
 HV2465'BULKHEAD AT FT. WASHINGTON, 1 METER WEST OF THE FT. WASHINGTON
 HV2465'BELL AND LIGHT TOWER AND IS STAMPED FORT 1928.
 HV2465'
 HV2465'THE R.M. AND THE IRON POST-FACE MENTIONED IN THE ORIGINAL
 HV2465'DESCRIPTION HAVE BEEN DESTROYED DURING RECENT CONSTRUCTION AT
 HV2465'THE SITE.  TWO NEW R.M.S WERE SET.
 HV2465'
 HV2465'R.M. NO 2 IS SET IN A DRILLED HOLE IN A 6X6 FEET CONCRETE
 HV2465'INCINERATOR EAST-NORTHEAST OF THE STATION.  LOCATED IN THE
 HV2465'NORTHWEST CORNER OF THE INCINERATOR, 5 FEET SOUTH OF A WOODEN
 HV2465'BULKHEAD ON THE NORTH SIDE OF FT. WASHINGTON PT., 12 FEET
 HV2465'NORTHEAST OF THE CENTER OF TWO UTILITY POLES SPACED 5 FEET APART
 HV2465'IN A NORTH-SOUTH DIRECTION, 70 FEET NORTH OF THE CENTER OF THE
 HV2465'ROAD FROM THE OLD FORT TO THE LIGHT AND BELL TOWER ON THE POINT
 HV2465'AND 112 FEET NORTHEAST OF THE DOOR TO THE LIGHT AND BELL
 HV2465'TOWER.  THE DISC IS 4 FEET ABOVE THE GROUND AND IS STAMPED
 HV2465'FORT NO 2 1928.
 HV2465'
 HV2465'R.M. NO 3 IS LOCATED SOUTHEAST OF THE STATION IN THE SOUTHWEST
 HV2465'EDGE OF THE PICNIC AREA AT THE POINT, 23 FEET NORTHWEST OF A 30
 HV2465'INCH DIAMETER AND TWIN FORMATION OAK TREE AND 87 FEET SOUTHEAST
 HV2465'OF THE DOOR OF THE LIGHT AND BELL TOWER.  THE MONUMENT IS FLUSH
 HV2465'AND THE DISC IS STAMPED FORT NO 3 1928.
 HV2465
 HV2465                          STATION RECOVERY (1965)
 HV2465
 HV2465'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (SPH)
 HV2465'THE STATION, REFERENCE MARK 2 AND REFERENCE MARK 3 WERE
 HV2465'RECOVERED IN GOOD CONDITION.  THE DISTANCE AND DIRECTION TO
 HV2465'REFERENCE MARK 3 CHECKED.  REFERENCE MARK 2 WAS SLIGHTLY
 HV2465'OBSTRUCTED AT TRIPOD HEIGHT BY THE FT. WASHINGTON BELL AND
 HV2465'LIGHT TOWER.  THE DESCRIPTION IS ADEQUATE FOR RECOVERY.
 HV2465
 HV2465                          STATION RECOVERY (1972)
 HV2465
 HV2465'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (RDO)
 HV2465'STATION AND RM 2 RECOVERED IN GOOD CONDITION AS DESCRIBED.  RM 3
 HV2465'NOT SEARCHED FOR.
 HV2465
 HV2465                          STATION RECOVERY (1974)
 HV2465
 HV2465'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RDB)
 HV2465'STATION AND REFERENCE MARK NUMBER 2 FOUND IN GOOD CONDITION,
 HV2465'USING DESCRIPTION BY C.P. IN 1928.  THE STATION IS 1 METER WEST
 HV2465'OF THE NW CORNER OF A LIGHTHOUSE SUPPORTING A FOG BELL AND
 HV2465'LIGHT 80.  R.M. NO. 2 IS 39.35 METERS ENE OF THE STATION ON THE
 HV2465'NW CORNER OF A LARGE CONCRETE PLATFORM.
 HV2465'
 HV2465'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV2465'AT FORT WASHINGTON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6582 ***********************************************************************
 HV6582  DESIGNATION -  FORT
 HV6582  PID         -  HV6582
 HV6582  STATE/COUNTY-  MD/ST MARYS
 HV6582  COUNTRY     -  US
 HV6582  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6582
 HV6582                         *CURRENT SURVEY CONTROL
 HV6582  ______________________________________________________________________
 HV6582* NAD 83(1993) POSITION- 38 08 15.02671(N) 076 26 15.41383(W)   ADJUSTED
 HV6582* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6582  ______________________________________________________________________
 HV6582  GEOID HEIGHT    -        -34.821 (meters)                     GEOID18
 HV6582  LAPLACE CORR    -         -6.06  (seconds)                    DEFLEC18
 HV6582  HORZ ORDER      -  THIRD
 HV6582
 HV6582.The horizontal coordinates were established by classical geodetic methods
 HV6582.and adjusted by the National Geodetic Survey in November 1994.
 HV6582
 HV6582.The orthometric height was scaled from a topographic map.
 HV6582
 HV6582.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6582.GEOID18 height accuracy estimate available here.
 HV6582
 HV6582.Click photographs - Photos may exist for this station.
 HV6582
 HV6582.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6582
 HV6582. The following values were computed from the NAD 83(1993) position.
 HV6582
 HV6582;                    North         East     Units Scale Factor Converg.
 HV6582;SPC MD       -    52,417.670   449,304.564   MT  1.00003224   +0 21 10.7
 HV6582;SPC MD       -   171,973.64  1,474,093.39   sFT  1.00003224   +0 21 10.7
 HV6582;SPC VA N     - 2,054,293.098 3,680,787.355   MT  0.99998325   +1 17 13.8
 HV6582;SPC VA N     - 6,739,793.27 12,076,049.85   sFT  0.99998325   +1 17 13.8
 HV6582;SPC VA S     - 1,202,203.799 3,680,797.654   MT  1.00003565   +1 15 06.2
 HV6582;SPC VA S     - 3,944,230.30 12,076,083.64   sFT  1.00003565   +1 15 06.2
 HV6582;UTM  18      - 4,222,048.126   374,014.124   MT  0.99979548   -0 53 16.5
 HV6582
 HV6582!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6582!SPC MD       -   1.00000535  x   1.00003224  =   1.00003759
 HV6582!SPC VA N     -   1.00000535  x   0.99998325  =   0.99998860
 HV6582!SPC VA S     -   1.00000535  x   1.00003565  =   1.00004100
 HV6582!UTM  18      -   1.00000535  x   0.99979548  =   0.99980083
 HV6582
 HV6582:                Primary Azimuth Mark                     Grid Az
 HV6582:SPC MD       -  ROD PRIESTS HOUSE 1908                   349 22 21.8
 HV6582:SPC VA N     -  ROD PRIESTS HOUSE 1908                   348 26 18.7
 HV6582:SPC VA S     -  ROD PRIESTS HOUSE 1908                   348 28 26.3
 HV6582:UTM  18      -  ROD PRIESTS HOUSE 1908                   350 36 49.0
 HV6582
 HV6582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7401422048(NAD 83)
 HV6582
 HV6582|---------------------------------------------------------------------|
 HV6582| PID    Reference Object                     Distance      Geod. Az  |
 HV6582|                                                           dddmmss.s |
 HV6582| CX2780 FORT RM                              32.170 METERS 02219     |
 HV6582| HV6575 ST INIGOES CHURCH CROSS             APPROX. 1.9 KM 0400132.3 |
 HV6582| HV6574 ROD PRIESTS HOUSE 1908              APPROX. 1.4 KM 3494332.5 |
 HV6582|---------------------------------------------------------------------|
 HV6582
 HV6582                          SUPERSEDED SURVEY CONTROL
 HV6582
 HV6582  NAD 83(1991)-  38 08 15.02568(N)    076 26 15.41685(W) AD(       ) 3
 HV6582  NAD 83(1986)-  38 08 15.02681(N)    076 26 15.43030(W) AD(       ) 3
 HV6582  NAD 27      -  38 08 14.61800(N)    076 26 16.65200(W) AD(       ) 3
 HV6582  USSD        -  38 08 15.00000(N)    076 26 16.36400(W) AD(       ) 3
 HV6582
 HV6582.Superseded values are not recommended for survey control.
 HV6582
 HV6582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6582.See file dsdata.pdf to determine how the superseded data were derived.
 HV6582
 HV6582_MARKER: N = NAIL
 HV6582_SETTING: 0 = UNSPECIFIED SETTING
 HV6582
 HV6582  HISTORY     - Date     Condition        Report By
 HV6582  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6582  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6582  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6582
 HV6582                          STATION DESCRIPTION
 HV6582
 HV6582'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6582'STATION IS ON THE EASTERN SHORE OF ST. MARYS RIVER, ON FORT POINT,
 HV6582'ABOUT 2-1/4 MILES N OF ENTRANCE TO RIVER, AND 7/8 MILE S OF PRIESTS
 HV6582'POINT.  STATION IS IN CULTIVATED FIELD ABOUT 15 FEET ABOVE HIGH
 HV6582'WATER, 16 YARDS E OF EDGE OF BANK, 70 YARDS W BY S OF A HOUSE,
 HV6582'AND 34 YARDS SSW OF A CORNER OF A FENCE.
 HV6582'
 HV6582'STATION MARK IS A NAIL IN STUB WITH TOP FLUSH WITH SURFACE OF
 HV6582'GROUND.
 HV6582'
 HV6582'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6582'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6582'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6582'MDSFCAND USCS ARE COUNTER-SUNK IN TOP OF POST.  IT IS 32.17 METERS
 HV6582'(105.5 FEET) FROM STATION N 22 DEG 20 MIN E.  DISTANCES
 HV6582'AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 HV6582'FOLLOWS--CHIMNEY OF 2-1/2 STORY HOUSE WITH ELL, 2-1/8 MILES, S 56
 HV6582'DEG 14 MIN W.  CANNING HOUSE STACK, 2-1/2 MILES, N 56 DEG 13 MIN W.
 HV6582'NEAR PEAK OF ROOF OF STABLE, 2-1/8 MILES, N 27 DEG 52 MIN W.
 HV6582'NEAR CHIMNEY OF TAYLORS HOUSE, 70 YARDS, N 68 DEG 28 MIN E.
 HV6582'CHIMNEY OF SMALL BUILDING, 250 YARDS, S 83 DEG 38 MIN E.
 HV6582
 HV6582                          STATION RECOVERY (1942)
 HV6582
 HV6582'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6582'THIS STATION HAS BEEN DESTROYED BUT THE CONCRETE REFERENCE MARK
 HV6582'IS STILL IN PLACE.
 HV6582'
 HV6582'THE REFERENCE MARK IS LOCATED ON THE EASTERN SHORE OF ST. MARYS
 HV6582'RIVER ABOUT 4.0 MILES FROM ST. INIGOES POST OFFICE ON FORT POINT
 HV6582'AND ON THE PROPERTY OF ARTHUR COMBS, 65 FEET FROM THE TOP OF A
 HV6582'10-FOOT BANK, 17 FEET W OF A LONE 24-INCH APPLE TREE, 66 FEET S
 HV6582'OF THE N GARDEN FENCE, 5 FEET N OF THE S GARDEN FENCE, ABOUT 115
 HV6582'FEET W OF THE SW CORNER OF WING OF A HOUSE AND IN THE
 HV6582'UNCULTIVATED PORTION OF THE GARDEN ABOUT 15 FEET ABOVE HIGH
 HV6582'WATER.
 HV6582'
 HV6582'THE REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV6582'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH
 HV6582'SQUARE CONCRETE MONUMENT, WHICH PROJECTS ABOUT 4 INCHES ABOVE THE
 HV6582'SURFACE OF THE GROUND.  THE LETTERS MDSFCAND USCS ARE COUNTERSUNK
 HV6582'IN THE TOP OF THE MONUMENT.  THE REFERENCE MARK IS IN GOOD
 HV6582'CONDITION.
 HV6582
 HV6582                          STATION RECOVERY (1958)
 HV6582
 HV6582'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6582'A THOROUGH SEARCH WAS MADE FOR THIS STATION WITHOUT RESULTS.  ALL
 HV6582'LOCAL REFERENCES HAVE BEEN DESTROYED, AND THE AREA HAS BEEN
 HV6582'FILLED AND LEVELED SEVERAL TIMES SINCE IT WAS ACQUIRED BY THE
 HV6582'NAVY.  THIS REFERENCE MARK SHOULD BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5532 ***********************************************************************
 JV5532  DESIGNATION -  FORT
 JV5532  PID         -  JV5532
 JV5532  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5532  COUNTRY     -  US
 JV5532  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5532
 JV5532                         *CURRENT SURVEY CONTROL
 JV5532  ______________________________________________________________________
 JV5532* NAD 83(1991) POSITION- 39 15 40.85332(N) 076 34 46.53437(W)   ADJUSTED
 JV5532* NAVD 88 ORTHO HEIGHT -     1.538 (meters)        5.05  (feet) ADJUSTED
 JV5532  ______________________________________________________________________
 JV5532  GEOID HEIGHT    -        -32.856 (meters)                     GEOID18
 JV5532  LAPLACE CORR    -         -4.45  (seconds)                    DEFLEC18
 JV5532  DYNAMIC HEIGHT  -          1.538 (meters)        5.05  (feet) COMP
 JV5532  MODELED GRAVITY -    980,098.8   (mgal)                       NAVD 88
 JV5532
 JV5532  HORZ ORDER      -  THIRD
 JV5532  VERT ORDER      -  SECOND    CLASS I
 JV5532
 JV5532.The horizontal coordinates were established by classical geodetic methods
 JV5532.and adjusted by the National Geodetic Survey in January 1992.
 JV5532
 JV5532.The orthometric height was determined by differential leveling and
 JV5532.adjusted by the NATIONAL GEODETIC SURVEY
 JV5532.in June 2008.
 JV5532
 JV5532.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5532.GEOID18 height accuracy estimate available here.
 JV5532
 JV5532.Click photographs - Photos may exist for this station.
 JV5532
 JV5532.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5532
 JV5532.The dynamic height is computed by dividing the NAVD 88
 JV5532.geopotential number by the normal gravity value computed on the
 JV5532.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV5532.degrees latitude (g = 980.6199 gals.).
 JV5532
 JV5532.The modeled gravity was interpolated from observed gravity values.
 JV5532
 JV5532. The following values were computed from the NAD 83(1991) position.
 JV5532
 JV5532;                    North         East     Units Scale Factor Converg.
 JV5532;SPC MD       -   177,102.953   436,282.874   MT  0.99997244   +0 15 49.9
 JV5532;SPC MD       -   581,045.27  1,431,371.40   sFT  0.99997244   +0 15 49.9
 JV5532;UTM  18      - 4,346,968.336   363,721.415   MT  0.99982867   -0 59 59.3
 JV5532
 JV5532!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5532!SPC MD       -   1.00000491  x   0.99997244  =   0.99997735
 JV5532!UTM  18      -   1.00000491  x   0.99982867  =   0.99983358
 JV5532
 JV5532:                Primary Azimuth Mark                     Grid Az
 JV5532:SPC MD       -  CANTON USE 1915                          111 29 35.5
 JV5532:UTM  18      -  CANTON USE 1915                          112 45 24.7
 JV5532
 JV5532_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6372146968(NAD 83)
 JV5532
 JV5532|---------------------------------------------------------------------|
 JV5532| PID    Reference Object                     Distance      Geod. Az  |
 JV5532|                                                           dddmmss.s |
 JV5532| CA9437 FORT RM                              16.339 METERS 00941     |
 JV5532| JV5530 FORT MC HENRY F RNG LT              327.827 METERS 02937     |
 JV5532| JV5529 PENN RR CO TANK                     APPROX. 1.2 KM 0492928.9 |
 JV5532| JV5476 BAUGHS CHEMICAL CO TANK             APPROX. 0.9 KM 0843155.9 |
 JV5532| JV5500 CANTON USE 1915                     APPROX. 1.5 KM 1114525.4 |
 JV5532| JV5702 MARYLAND DRYDOCK CO TALL TANK       APPROX. 1.9 KM 1861308.8 |
 JV5532| JV5685 INCINERATOR PLANT S STACK           APPROX. 3.5 KM 2451825.3 |
 JV5532| JV5686 INCINERATOR PLANT N STACK           APPROX. 3.5 KM 2452925.7 |
 JV5532| JV5566 FERRY BAR CHANNEL FRONT RNG LT      APPROX. 2.8 KM 2555346.9 |
 JV5532| JV5593 MARYLAND YACHT CLUB FLAGPOLE        APPROX. 3.2 KM 2563414.5 |
 JV5532| JV5594 FERRY BAR CHANNEL REAR RNG LT       APPROX. 3.2 KM 2573042.0 |
 JV5532| JV5562 GAS AND ELECTRIC CO E STACK         APPROX. 2.1 KM 2833153.6 |
 JV5532| JV5561 GAS AND ELECTRIC CO W STACK         APPROX. 2.1 KM 2834351.9 |
 JV5532| JV5547 CHESAPEAKE PAPER BOARD CO STK       APPROX. 2.0 KM 2963002.7 |
 JV5532| JV5545 CHESAPEAKE PAPER BOARD CO TANK      APPROX. 2.0 KM 2970732.4 |
 JV5532|---------------------------------------------------------------------|
 JV5532
 JV5532                          SUPERSEDED SURVEY CONTROL
 JV5532
 JV5532  NAD 83(1986)-  39 15 40.84964(N)    076 34 46.54342(W) AD(       ) 3
 JV5532  NAD 27      -  39 15 40.46300(N)    076 34 47.66800(W) AD(       ) 3
 JV5532
 JV5532.Superseded values are not recommended for survey control.
 JV5532
 JV5532.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5532.See file dsdata.pdf to determine how the superseded data were derived.
 JV5532
 JV5532_MARKER: DS = TRIANGULATION STATION DISK
 JV5532_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV5532_SP_SET: SEAWALL
 JV5532_STAMPING: FORT 1934
 JV5532_MARK LOGO: CGS
 JV5532_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5532_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5532+STABILITY: SURFACE MOTION
 JV5532_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5532+SATELLITE: SATELLITE OBSERVATIONS - June 05, 2014
 JV5532
 JV5532  HISTORY     - Date     Condition        Report By
 JV5532  HISTORY     - 1934     MONUMENTED       CGS
 JV5532  HISTORY     - 1975     GOOD             NGS
 JV5532  HISTORY     - 1980     GOOD             USACE
 JV5532  HISTORY     - 19880728 GOOD             MDDNR
 JV5532  HISTORY     - 20020715 GOOD             NGS
 JV5532  HISTORY     - 20060318 GOOD             GEOCAC
 JV5532  HISTORY     - 20060725 GOOD             NGS
 JV5532  HISTORY     - 20110315 GOOD             GEOCAC
 JV5532  HISTORY     - 20140605 GOOD             USPSQD
 JV5532
 JV5532                          STATION DESCRIPTION
 JV5532
 JV5532'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5532'ON THE NORTHERN SHORE OF THE PATAPSCO RIVER, ON THE SEA WALL
 JV5532'SURROUNDING FORT MC HENRY, IN A SOUTHEASTERLY DIRECTION FROM THE
 JV5532'FORT MC HENRY FLAGPOLE, 2 FEET FROM THE OUTER EDGE OF SEA
 JV5532'WALL.  STATION IS STANDARD DISKS SET IN SEA WALL.
 JV5532'
 JV5532'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISK SET IN
 JV5532'CONCRETE.
 JV5532'
 JV5532'HEIGHT OF LIGHT ABOVE STATION MARK 3 METERS.
 JV5532
 JV5532                          STATION RECOVERY (1975)
 JV5532
 JV5532'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5532'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5532'
 JV5532'DESCRIPTION IS SUFFICIENT FOR RECOVERY.
 JV5532
 JV5532                          STATION RECOVERY (1980)
 JV5532
 JV5532'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1980 (TC)
 JV5532'FORT 1934 RECOVERED GOOD.
 JV5532'
 JV5532'RM NOT SEARCHED FOR.
 JV5532'
 JV5532'DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MI. FROM CENTER CITY
 JV5532'BALT.
 JV5532
 JV5532                          STATION RECOVERY (1988)
 JV5532
 JV5532'RECOVERY NOTE BY MD DEPT OF NAT RES 1988 (LW)
 JV5532'RECOVERED IN GOOD CONDITION.
 JV5532
 JV5532                          STATION RECOVERY (2002)
 JV5532
 JV5532'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (JGE)
 JV5532'RECOVERED IN GOOD CONDITION.
 JV5532
 JV5532                          STATION RECOVERY (2006)
 JV5532
 JV5532'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 JV5532'RECOVERED IN GOOD CONDITION.
 JV5532
 JV5532                          STATION RECOVERY (2006)
 JV5532
 JV5532'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 JV5532'RECOVERED AS DESCRIBED.
 JV5532
 JV5532                          STATION RECOVERY (2011)
 JV5532
 JV5532'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5532'RECOVERED IN GOOD CONDITION.
 JV5532
 JV5532                          STATION RECOVERY (2014)
 JV5532
 JV5532'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV5532'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4334 ***********************************************************************
 DS4334  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4334  DESIGNATION -  FORT
 DS4334  PID         -  DS4334
 DS4334  STATE/COUNTY-  MD/ANNE ARUNDEL
 DS4334  COUNTRY     -  US
 DS4334  USGS QUAD   -  CURTIS BAY (2016)
 DS4334
 DS4334                         *CURRENT SURVEY CONTROL
 DS4334  ______________________________________________________________________
 DS4334* NAD 83(2011) POSITION- 39 11 49.30561(N) 076 33 16.81511(W)   ADJUSTED
 DS4334* NAD 83(2011) ELLIP HT-   -23.779 (meters)        (01/30/26)   ADJUSTED
 DS4334* NAD 83(2011) EPOCH   -  2010.00
 DS4334* NAVD 88 ORTHO HEIGHT -     9.19  (meters)       30.2   (feet) GPS OBS
 DS4334  ______________________________________________________________________
 DS4334  GEOID HEIGHT    -        -32.965 (meters)                     GEOID18
 DS4334  NAD 83(2011) X  -  1,150,848.339 (meters)                     COMP
 DS4334  NAD 83(2011) Y  - -4,813,859.003 (meters)                     COMP
 DS4334  NAD 83(2011) Z  -  4,009,277.332 (meters)                     COMP
 DS4334  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 DS4334
 DS4334  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4334  Standards:
 DS4334         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4334            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4334  -------------------------------------------------------------------
 DS4334  NETWORK    0.65   1.55           0.29   0.23   0.79     -0.11590604
 DS4334  -------------------------------------------------------------------
 DS4334  Click here for local accuracies and other accuracy information.
 DS4334
 DS4334.The horizontal coordinates were established by GPS observations
 DS4334.and adjusted by the MD DOT HIGHWAY ADMIN in January 2026.
 DS4334
 DS4334.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4334.frame has been affixed to the stable North American tectonic plate 
 DS4334
 DS4334.The horizontal coordinates are valid at the epoch date displayed above
 DS4334.which is a decimal equivalence of Year/Month/Day.
 DS4334
 DS4334.The orthometric height was determined by GPS observations and a
 DS4334.high-resolution geoid model using precise GPS observation and
 DS4334.processing techniques.
 DS4334
 DS4334.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4334.GEOID18 height accuracy estimate available here.
 DS4334
 DS4334.Click photographs - Photos may exist for this station.
 DS4334
 DS4334.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4334
 DS4334.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4334
 DS4334.The ellipsoidal height was determined by GPS observations
 DS4334.and is referenced to NAD 83.
 DS4334
 DS4334. The following values were computed from the NAD 83(2011) position.
 DS4334
 DS4334;                    North         East     Units Scale Factor Converg.
 DS4334;SPC MD       -   169,972.794   438,468.564   MT  0.99996553   +0 16 46.2
 DS4334;SPC MD       -   557,652.41  1,438,542.28   sFT  0.99996553   +0 16 46.2
 DS4334;UTM  18      - 4,339,792.766   365,749.130   MT  0.99982192   -0 58 57.7
 DS4334
 DS4334!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4334!SPC MD       -   1.00000373  x   0.99996553  =   0.99996926
 DS4334!UTM  18      -   1.00000373  x   0.99982192  =   0.99982565
 DS4334
 DS4334_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6574939792(NAD 83)
 DS4334
 DS4334                          SUPERSEDED SURVEY CONTROL
 DS4334
 DS4334.No superseded survey control is available for this station.
 DS4334
 DS4334_MARKER: DD = SURVEY DISK
 DS4334_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS4334_STAMPING: FORT 1993
 DS4334_MARK LOGO: MD-003
 DS4334_PROJECTION: FLUSH
 DS4334_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS4334+STABILITY: SURFACE MOTION
 DS4334_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4334+SATELLITE: SATELLITE OBSERVATIONS - April 22, 2025
 DS4334
 DS4334  HISTORY     - Date     Condition        Report By
 DS4334  HISTORY     - 19930101 MONUMENTED       MD-003
 DS4334  HISTORY     - 20250422 GOOD             MDSHA
 DS4334
 DS4334                          STATION DESCRIPTION
 DS4334
 DS4334'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4334'THE MARK IS LOCATED ABOUT 7.1 MI (11.4 KM) SOUTH-SOUTHEAST OF
 DS4334'BALTIMORE, 4.5 MI (7.2 KM) WEST-SOUTHWEST OF SPARROWS POINT AND 2.7 MI
 DS4334'(4.3 KM) SOUTHEAST OF CURTIS BAY.
 DS4334'
 DS4334'TO REACH THE MARK FROM THE INTERSECTION OF MD 2 (GOVERNOR RITCHIE
 DS4334'HIGHWAY)AND MARLEY STATION ROAD PROCEED NORTH EAST ON MARLEY STATION
 DS4334'ROAD FOR 7.21 KM (4.48 MI) TO THE INTERSECTION WITH MD 173 (FORT
 DS4334'SMALLWOOD ROAD).  TURN LEFT ONTO FORT SMALLWOOD ROAD AND PROCEED NORTH
 DS4334'FOR 1.09 KM (0.68 MI) TO THE MARK ON THE RIGHT.
 DS4334'
 DS4334'THE MARK IS 64 FT (19.5 M) EAST OF THE CENTERLINE OF FORT SMALLWOOD
 DS4334'ROAD, 57.8 FT (17.6 M) SOUTH OF THE CENTERLINE OF CABOT DRIVE, 51.6 FT
 DS4334'(15.7 M) WEST-SOUTHWEST OF A MANHOLE IN A DRAINAGE INLET ON THE
 DS4334'SOUTHSIDE OF CABOT DRIVE, 16 FT (4.9 M) NORTHWEST OF A UTILITY POLE
 DS4334'NUMBERED BGE 291344 SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE
 DS4334'POST AND ABOUT 0.5 FT (15 CM) HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5699 ***********************************************************************
 JV5699  DESIGNATION -  FORT CARROLL LIGHTHOUSE
 JV5699  PID         -  JV5699
 JV5699  STATE/COUNTY-  MD/BALTIMORE
 JV5699  COUNTRY     -  US
 JV5699  USGS QUAD   -  CURTIS BAY (2016)
 JV5699
 JV5699                         *CURRENT SURVEY CONTROL
 JV5699  ______________________________________________________________________
 JV5699* NAD 83(1991) POSITION- 39 12 52.34510(N) 076 31 11.56705(W)   ADJUSTED
 JV5699* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5699  ______________________________________________________________________
 JV5699  GEOID HEIGHT    -        -33.001 (meters)                     GEOID18
 JV5699  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 JV5699  HORZ ORDER      -  THIRD
 JV5699
 JV5699.The horizontal coordinates were established by classical geodetic methods
 JV5699.and adjusted by the National Geodetic Survey in January 1992.
 JV5699
 JV5699.The orthometric height was scaled from a topographic map.
 JV5699
 JV5699.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5699.GEOID18 height accuracy estimate available here.
 JV5699
 JV5699.Click photographs - Photos may exist for this station.
 JV5699
 JV5699.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5699
 JV5699. The following values were computed from the NAD 83(1991) position.
 JV5699
 JV5699;                    North         East     Units Scale Factor Converg.
 JV5699;SPC MD       -   171,931.992   441,463.651   MT  0.99996728   +0 18 04.8
 JV5699;SPC MD       -   564,080.21  1,448,368.66   sFT  0.99996728   +0 18 04.8
 JV5699;UTM  18      - 4,341,685.227   368,786.196   MT  0.99981199   -0 57 39.8
 JV5699
 JV5699!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5699!SPC MD       -   1.00000522  x   0.99996728  =   0.99997250
 JV5699!UTM  18      -   1.00000522  x   0.99981199  =   0.99981721
 JV5699
 JV5699:                Primary Azimuth Mark                     Grid Az
 JV5699:SPC MD       -  ARMISTEAD                                245 17 09.7
 JV5699:UTM  18      -  ARMISTEAD                                246 32 54.3
 JV5699
 JV5699_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6878641685(NAD 83)
 JV5699
 JV5699|---------------------------------------------------------------------|
 JV5699| PID    Reference Object                     Distance      Geod. Az  |
 JV5699|                                                           dddmmss.s |
 JV5699| JV5677 ARMISTEAD                           APPROX. 1.2 KM 2453514.5 |
 JV5699|---------------------------------------------------------------------|
 JV5699
 JV5699                          SUPERSEDED SURVEY CONTROL
 JV5699
 JV5699  NAD 83(1986)-  39 12 52.34145(N)    076 31 11.57615(W) AD(       ) 3
 JV5699  NAD 27      -  39 12 51.95200(N)    076 31 12.70900(W) AD(       ) 3
 JV5699  USSD        -  39 12 52.31200(N)    076 31 12.54800(W) AD(       ) 3
 JV5699
 JV5699.Superseded values are not recommended for survey control.
 JV5699
 JV5699.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5699.See file dsdata.pdf to determine how the superseded data were derived.
 JV5699
 JV5699_MARKER: 13 = LIGHTHOUSE
 JV5699
 JV5699  HISTORY     - Date     Condition        Report By
 JV5699  HISTORY     - 1915     FIRST OBSERVED   CGS
 JV5699  HISTORY     - 1934     GOOD             CGS
 JV5699  HISTORY     - 1975     GOOD             NGS
 JV5699  HISTORY     - 1984     GOOD             USPSQD
 JV5699  HISTORY     - 19940930 GOOD             USPSQD
 JV5699  HISTORY     - 19950728 GOOD             USPSQD
 JV5699
 JV5699                          STATION DESCRIPTION
 JV5699
 JV5699'DESCRIBED BY COAST AND GEODETIC SURVEY 1915 (EWE)
 JV5699'THE LANTERN OF THE LIGHTHOUSE ON FORT CARROLL IN THE PATAPSCO
 JV5699'RIVER.  A CONCRETE MONUMENT WITH COPPER PLUG FOR CENTER WAS SET
 JV5699'IN GRASS PLOT IN FRONT OF BATTERY HEART.  IT IS 63.381 METERS
 JV5699'(207.94 FEET) FROM THE STATION, AND AT THIS REFERENCE MARK THE
 JV5699'STATION IS 66 DEG 32 MIN 55 SEC TO THE RIGHT OF THE LINE TO
 JV5699'STATION ARMISTEAD.
 JV5699
 JV5699                          STATION RECOVERY (1934)
 JV5699
 JV5699'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5699'THE CENTER OF THE SHARP SPIRE ON TOP OF THE LIGHTHOUSE AT FORT
 JV5699'CARROLL.
 JV5699'
 JV5699'THE POSITION OF THIS STATION WAS DETERMINED BY CUTS FROM
 JV5699'TRIANGULATION STATIONS QUARANTINE, ARMISTEAD, AND TANK GENERAL
 JV5699'AVIATION.  THE STATION IS THOUGHT TO BE IDENTICAL WITH THE
 JV5699'STATION OF THE SAME NAME DESCRIBED BY E.W. EICKELBERG, PAGE 345
 JV5699'TRIANGULATION IN MARYLAND.  SINCE THE STATION WAS NOT VISITED,
 JV5699'THIS CANNOT BE VERIFIED.
 JV5699
 JV5699                          STATION RECOVERY (1975)
 JV5699
 JV5699'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5699'STATION WAS RECOVERED AS DESCRIBED.  OBSERVATIONS USING FT. CARROLL
 JV5699'LIGHTHOUSE INDICATE RECOVERY OF THE STATION.
 JV5699
 JV5699                          STATION RECOVERY (1984)
 JV5699
 JV5699'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5699'OBSERVED CENTER SPIRE ON TOP OF LIGHTHOUSE AT FORT CARROLL, NO
 JV5699'LANDING WAS ATEMPTED ON ISLAND, PRIVATED PROPERTY.
 JV5699
 JV5699                          STATION RECOVERY (1994)
 JV5699
 JV5699'RECOVERY NOTE BY US POWER SQUADRON 1994
 JV5699'RECOVERED IN GOOD CONDITION.
 JV5699
 JV5699                          STATION RECOVERY (1995)
 JV5699
 JV5699'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV5699'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5530 ***********************************************************************
 JV5530  DESIGNATION -  FORT MC HENRY F RNG LT
 JV5530  PID         -  JV5530
 JV5530  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5530  COUNTRY     -  US
 JV5530  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5530
 JV5530                         *CURRENT SURVEY CONTROL
 JV5530  ______________________________________________________________________
 JV5530* NAD 83(1991) POSITION- 39 15 50.09448(N) 076 34 39.77587(W)   ADJUSTED
 JV5530* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5530  ______________________________________________________________________
 JV5530  GEOID HEIGHT    -        -32.856 (meters)                     GEOID18
 JV5530  LAPLACE CORR    -         -4.39  (seconds)                    DEFLEC18
 JV5530  HORZ ORDER      -  THIRD
 JV5530
 JV5530.The horizontal coordinates were established by classical geodetic methods
 JV5530.and adjusted by the National Geodetic Survey in January 1992.
 JV5530
 JV5530.The orthometric height was scaled from a topographic map.
 JV5530
 JV5530.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5530.GEOID18 height accuracy estimate available here.
 JV5530
 JV5530.Click photographs - Photos may exist for this station.
 JV5530
 JV5530.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5530
 JV5530. The following values were computed from the NAD 83(1991) position.
 JV5530
 JV5530;                    North         East     Units Scale Factor Converg.
 JV5530;SPC MD       -   177,388.678   436,443.579   MT  0.99997274   +0 15 54.1
 JV5530;SPC MD       -   581,982.69  1,431,898.64   sFT  0.99997274   +0 15 54.1
 JV5530;UTM  18      - 4,347,250.407   363,888.358   MT  0.99982811   -0 59 55.2
 JV5530
 JV5530!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5530!SPC MD       -   1.00000519  x   0.99997274  =   0.99997793
 JV5530!UTM  18      -   1.00000519  x   0.99982811  =   0.99983330
 JV5530
 JV5530:                Primary Azimuth Mark                     Grid Az
 JV5530:SPC MD       -  PEN                                      047 00 17.4
 JV5530:UTM  18      -  PEN                                      048 16 06.7
 JV5530
 JV5530_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6388847250(NAD 83)
 JV5530
 JV5530|---------------------------------------------------------------------|
 JV5530| PID    Reference Object                     Distance      Geod. Az  |
 JV5530|                                                           dddmmss.s |
 JV5530| JV5527 PEN                                 APPROX. 0.7 KM 0471611.5 |
 JV5530| JV5532 FORT                                327.827 METERS 20937     |
 JV5530| JV5553 FORT MC HENRY REAR RNG LT 1934      APPROX. 1.0 KM 3203744.1 |
 JV5530|---------------------------------------------------------------------|
 JV5530
 JV5530                          SUPERSEDED SURVEY CONTROL
 JV5530
 JV5530  NAD 83(1986)-  39 15 50.09080(N)    076 34 39.78490(W) AD(       ) 3
 JV5530  NAD 27      -  39 15 49.70500(N)    076 34 40.90900(W) AD(       ) 3
 JV5530
 JV5530.Superseded values are not recommended for survey control.
 JV5530
 JV5530.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5530.See file dsdata.pdf to determine how the superseded data were derived.
 JV5530
 JV5530_MARKER: 14 = NAVIGATION LIGHT
 JV5530_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5530+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5530
 JV5530  HISTORY     - Date     Condition        Report By
 JV5530  HISTORY     - 1934     FIRST OBSERVED   CGS
 JV5530  HISTORY     - 1975     GOOD             NGS
 JV5530  HISTORY     - 20060715 GOOD             GEOCAC
 JV5530  HISTORY     - 20110315 GOOD             GEOCAC
 JV5530
 JV5530                          STATION DESCRIPTION
 JV5530
 JV5530'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5530'THE FRONT RANGE LIGHT OF FORT MC HENRY CHANNEL LOCATED ON THE NW
 JV5530'EDGE OF FORT MC HENRY RESERVATION.
 JV5530'
 JV5530'STATION IS CENTER OF BOX CONTAINING THE LIGHTS.
 JV5530'
 JV5530'HEIGHT OF LIGHT ABOVE STATION MARK 20 METERS.
 JV5530
 JV5530                          STATION RECOVERY (1975)
 JV5530
 JV5530'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5530'STATION RECOVERED AS DESCRIBED.
 JV5530
 JV5530                          STATION RECOVERY (2006)
 JV5530
 JV5530'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 JV5530'RECOVERED IN GOOD CONDITION.
 JV5530
 JV5530                          STATION RECOVERY (2011)
 JV5530
 JV5530'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5530'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5557 ***********************************************************************
 JV5557  DESIGNATION -  FORT MC HENRY FLAGSTAFF 2
 JV5557  PID         -  JV5557
 JV5557  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5557  COUNTRY     -  US
 JV5557  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5557
 JV5557                         *CURRENT SURVEY CONTROL
 JV5557  ______________________________________________________________________
 JV5557* NAD 83(1991) POSITION- 39 15 48.22967(N) 076 34 46.99500(W)   NO CHECK
 JV5557* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV5557  ______________________________________________________________________
 JV5557  GEOID HEIGHT    -        -32.853 (meters)                     GEOID18
 JV5557  LAPLACE CORR    -         -4.46  (seconds)                    DEFLEC18
 JV5557  HORZ ORDER      -  THIRD
 JV5557
 JV5557.The horizontal coordinates were established by classical geodetic methods
 JV5557.and adjusted by the National Geodetic Survey in January 1992.
 JV5557
 JV5557.No horizontal observational check was made to the station.
 JV5557
 JV5557.The orthometric height was scaled from a topographic map.
 JV5557
 JV5557.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5557.GEOID18 height accuracy estimate available here.
 JV5557
 JV5557.Click photographs - Photos may exist for this station.
 JV5557
 JV5557.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5557
 JV5557. The following values were computed from the NAD 83(1991) position.
 JV5557
 JV5557;                    North         East     Units Scale Factor Converg.
 JV5557;SPC MD       -   177,330.372   436,270.784   MT  0.99997268   +0 15 49.6
 JV5557;SPC MD       -   581,791.40  1,431,331.73   sFT  0.99997268   +0 15 49.6
 JV5557;UTM  18      - 4,347,195.934   363,714.344   MT  0.99982870   -0 59 59.8
 JV5557
 JV5557!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5557!SPC MD       -   1.00000394  x   0.99997268  =   0.99997662
 JV5557!UTM  18      -   1.00000394  x   0.99982870  =   0.99983264
 JV5557
 JV5557_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6371447195(NAD 83)
 JV5557
 JV5557                          SUPERSEDED SURVEY CONTROL
 JV5557
 JV5557  NAD 83(1986)-  39 15 48.22597(N)    076 34 47.00403(W) AD(       ) 3
 JV5557  NAD 27      -  39 15 47.83900(N)    076 34 48.12400(W) AD(       ) 3
 JV5557
 JV5557.Superseded values are not recommended for survey control.
 JV5557
 JV5557.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5557.See file dsdata.pdf to determine how the superseded data were derived.
 JV5557
 JV5557_MARKER: 83 = FLAGSTAFF
 JV5557_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5557+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2011
 JV5557
 JV5557  HISTORY     - Date     Condition        Report By
 JV5557  HISTORY     - 1959     FIRST OBSERVED   CGS
 JV5557  HISTORY     - 1975     GOOD             NGS
 JV5557  HISTORY     - 20060522 GOOD             NGS
 JV5557  HISTORY     - 20091213 GOOD             GEOCAC
 JV5557  HISTORY     - 20110315 GOOD             GEOCAC
 JV5557
 JV5557                          STATION DESCRIPTION
 JV5557
 JV5557'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (WFD)
 JV5557'STATION IS AT FORT MC HENRY INSIDE MAIN INNER (STAR) FORT.  IT
 JV5557'IS 25 FEET WEST OF NORTH CORNER OF INSIDE OPENING TO THE INNER
 JV5557'FORT.  THE FLAGSTAFF EXTENDS 87 FEET ABOVE THE GROUND AND IS
 JV5557'STEPPED.  THE LOWER SECTION WAS OBSERVED UPON.
 JV5557
 JV5557                          STATION RECOVERY (1975)
 JV5557
 JV5557'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5557'STATION RECOVERED AS DESCRIBED.  THE FLAGSTAFF HAS AN APPEARANCE
 JV5557'SIMILAR TO A MAST OF A SAILING VESSEL.
 JV5557
 JV5557                          STATION RECOVERY (2006)
 JV5557
 JV5557'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DW)
 JV5557'RECOVERED IN GOOD CONDITION.
 JV5557
 JV5557                          STATION RECOVERY (2009)
 JV5557
 JV5557'RECOVERY NOTE BY GEOCACHING 2009 (KHW)
 JV5557'RECOVERED IN GOOD CONDITION.
 JV5557
 JV5557                          STATION RECOVERY (2011)
 JV5557
 JV5557'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV5557'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5553 ***********************************************************************
 JV5553  DESIGNATION -  FORT MC HENRY REAR RNG LT 1934
 JV5553  PID         -  JV5553
 JV5553  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5553  COUNTRY     -  US
 JV5553  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5553
 JV5553                         *CURRENT SURVEY CONTROL
 JV5553  ______________________________________________________________________
 JV5553* NAD 83(1991) POSITION- 39 16 15.19271(N) 076 35 06.27231(W)   ADJUSTED
 JV5553* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5553  ______________________________________________________________________
 JV5553  GEOID HEIGHT    -        -32.829 (meters)                     GEOID18
 JV5553  LAPLACE CORR    -         -4.64  (seconds)                    DEFLEC18
 JV5553  HORZ ORDER      -  THIRD
 JV5553
 JV5553.The horizontal coordinates were established by classical geodetic methods
 JV5553.and adjusted by the National Geodetic Survey in January 1992.
 JV5553
 JV5553.The orthometric height was scaled from a topographic map.
 JV5553
 JV5553.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5553.GEOID18 height accuracy estimate available here.
 JV5553
 JV5553.Click photographs - Photos may exist for this station.
 JV5553
 JV5553.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5553
 JV5553. The following values were computed from the NAD 83(1991) position.
 JV5553
 JV5553;                    North         East     Units Scale Factor Converg.
 JV5553;SPC MD       -   178,159.742   435,804.879   MT  0.99997357   +0 15 37.5
 JV5553;SPC MD       -   584,512.42  1,429,803.17   sFT  0.99997357   +0 15 37.5
 JV5553;UTM  18      - 4,348,035.258   363,266.909   MT  0.99983020   -1 00 12.6
 JV5553
 JV5553!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5553!SPC MD       -   1.00000519  x   0.99997357  =   0.99997876
 JV5553!UTM  18      -   1.00000519  x   0.99983020  =   0.99983539
 JV5553
 JV5553_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6326648035(NAD 83)
 JV5553
 JV5553                          SUPERSEDED SURVEY CONTROL
 JV5553
 JV5553  NAD 83(1986)-  39 16 15.18904(N)    076 35 06.28127(W) AD(       ) 3
 JV5553  NAD 27      -  39 16 14.80400(N)    076 35 07.40500(W) AD(       ) 3
 JV5553
 JV5553.Superseded values are not recommended for survey control.
 JV5553
 JV5553.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5553.See file dsdata.pdf to determine how the superseded data were derived.
 JV5553
 JV5553_MARKER: Z = SEE DESCRIPTION
 JV5553_SETTING: 0 = UNSPECIFIED SETTING
 JV5553_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5553
 JV5553  HISTORY     - Date     Condition        Report By
 JV5553  HISTORY     - 1934     MONUMENTED       CGS
 JV5553  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV5553
 JV5553                          STATION DESCRIPTION
 JV5553
 JV5553'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5553'A BRASS SCREW IN THE ROOF OF THE BALTIMORE AND OHIO RAILROAD
 JV5553'COMPANY PIER NO.6, BETWEEN LOCUST POINT AND FORT MC HENRY ON
 JV5553'THE SOUTHERN SIDE OF THE NW HARBOR.  MARK IS 323.1 FEET FROM NW
 JV5553'SIDE OF ELEVATOR HOUSE, 27.19 FEET FROM SIXTH VENTILATOR ON ROOF,
 JV5553'33.13 FEET FROM SEVENTH VENTILATOR AND 0.68 FOOT FROM SE EDGE
 JV5553'OF ROOF.
 JV5553
 JV5553                          STATION RECOVERY (1975)
 JV5553
 JV5553'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5553'THE STATION, A BRASS SCREW IN THE ROOF OF B AND O RAILROAD COMPANY
 JV5553'PIER 6 WAS NOT SEARCHED FOR, HOWEVER THERE IS NO RANGE LIGHT
 JV5553'AT THIS LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3801 ***********************************************************************
 DI3801  DESIGNATION -  FORT MCHENRY
 DI3801  PID         -  DI3801
 DI3801  STATE/COUNTY-  MD/C OF BALTIMORE
 DI3801  COUNTRY     -  US
 DI3801  USGS QUAD   -  BALTIMORE EAST (2016)
 DI3801
 DI3801                         *CURRENT SURVEY CONTROL
 DI3801  ______________________________________________________________________
 DI3801* NAD 83(1986) POSITION- 39 15 58.69   (N) 076 34 46.57   (W)   HD_HELD1
 DI3801* NAVD 88 ORTHO HEIGHT -     1.427 (meters)        4.68  (feet) ADJUSTED
 DI3801  ______________________________________________________________________
 DI3801  GEOID HEIGHT    -        -32.849 (meters)                     GEOID18
 DI3801  DYNAMIC HEIGHT  -          1.427 (meters)        4.68  (feet) COMP
 DI3801  MODELED GRAVITY -    980,099.5   (mgal)                       NAVD 88
 DI3801
 DI3801  VERT ORDER      -  SECOND    CLASS I
 DI3801
 DI3801.The horizontal coordinates were determined by differentially corrected
 DI3801.hand held GPS observations or other comparable positioning techniques
 DI3801.and have an estimated accuracy of +/- 3 meters.
 DI3801
 DI3801.The orthometric height was determined by differential leveling and
 DI3801.adjusted by the NATIONAL GEODETIC SURVEY
 DI3801.in June 2008.
 DI3801
 DI3801.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3801.GEOID18 height accuracy estimate available here.
 DI3801
 DI3801.Click photographs - Photos may exist for this station.
 DI3801
 DI3801.The dynamic height is computed by dividing the NAVD 88
 DI3801.geopotential number by the normal gravity value computed on the
 DI3801.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DI3801.degrees latitude (g = 980.6199 gals.).
 DI3801
 DI3801.The modeled gravity was interpolated from observed gravity values.
 DI3801
 DI3801;                    North         East    Units  Estimated Accuracy
 DI3801;SPC MD       -   177,653.0     436,279.5     MT  (+/- 3 meters HH1 GPS) 
 DI3801
 DI3801_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6373047518(NAD 83)
 DI3801
 DI3801                          SUPERSEDED SURVEY CONTROL
 DI3801
 DI3801.No superseded survey control is available for this station.
 DI3801
 DI3801_MARKER: DD = SURVEY DISK
 DI3801_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3801_STAMPING: FORT MCHENRY 1982
 DI3801_MARK LOGO: USACE
 DI3801_MAGNETIC: N = NO MAGNETIC MATERIAL
 DI3801_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3801+STABILITY: SURFACE MOTION
 DI3801_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3801+SATELLITE: SATELLITE OBSERVATIONS - August 16, 2006
 DI3801
 DI3801  HISTORY     - Date     Condition        Report By
 DI3801  HISTORY     - 1982     MONUMENTED       USACE
 DI3801  HISTORY     - 20060816 GOOD             NGS
 DI3801
 DI3801                          STATION DESCRIPTION
 DI3801
 DI3801'DESCRIBED BY NATIONAL GEODETIC SURVEY 2006 (JRO)
 DI3801'THE MARK IS LOCATED IN SOUTH BALTIMORE.
 DI3801'
 DI3801'THE MARK IS A CORPS OF ENGINEERS BRASS DISK IN A 4 INCH (10 CM) PVC
 DI3801'PIPE IN A CONCRETE MONUMENT, IN THE SAME GRASS AREA AS DEEP ROD TIDAL
 DI3801'BENCH MARK 4680 B, BETWEEN THE 1-STORY CORPS OF ENGINEERS BUILDING AND
 DI3801'THE SEAWALL.
 DI3801'
 DI3801'0.5 FT (0.2 M) SOUTHWEST OR AWAY FROM SEAWALL (TOWARD BUILDING) FROM
 DI3801'AN ORANGE WITNESS POST.  IT IS APPROXIMATELY ON LINE BETWEEN A POWER
 DI3801'POLE AT THE SOUTHEAST EDGE OF A PARKING LOT AND A FLAG POLE, 23.5 FT
 DI3801'(7.2 M) SOUTHEAST OF THE POWER POLE AND 73.5 FT (22.4 M) NORTHWEST OF
 DI3801'THE FLAG POLE, 76.5 FT (23.3 M) SOUTHWEST OF THE SEA WALL, 38.5 FT
 DI3801'(11.7 M) NORTHEAST OR TOWARD SEAWALL FROM THE CORNER OF THE CORPS OF
 DI3801'ENGINEERS BUILDING THAT IS BY THE EMPLOYEE DOORS, NOT THE CORNER BY
 DI3801'THE GARAGE DOOR, FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5892 ***********************************************************************
 JV5892  DESIGNATION -  FORT MEADE SIMONDS ST TANK
 JV5892  PID         -  JV5892
 JV5892  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5892  COUNTRY     -  US
 JV5892  USGS QUAD   -  LAUREL (2016)
 JV5892
 JV5892                         *CURRENT SURVEY CONTROL
 JV5892  ______________________________________________________________________
 JV5892* NAD 83(1991) POSITION- 39 05 44.09029(N) 076 45 03.69938(W)   ADJUSTED
 JV5892* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5892  ______________________________________________________________________
 JV5892  GEOID HEIGHT    -        -32.526 (meters)                     GEOID18
 JV5892  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 JV5892  HORZ ORDER      -  THIRD
 JV5892
 JV5892.The horizontal coordinates were established by classical geodetic methods
 JV5892.and adjusted by the National Geodetic Survey in January 1992.
 JV5892
 JV5892.The orthometric height was scaled from a topographic map.
 JV5892
 JV5892.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5892.GEOID18 height accuracy estimate available here.
 JV5892
 JV5892.Click photographs - Photos may exist for this station.
 JV5892
 JV5892.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5892
 JV5892. The following values were computed from the NAD 83(1991) position.
 JV5892
 JV5892;                    North         East     Units Scale Factor Converg.
 JV5892;SPC MD       -   158,646.112   421,537.587   MT  0.99995718   +0 09 22.5
 JV5892;SPC MD       -   520,491.45  1,382,994.57   sFT  0.99995718   +0 09 22.5
 JV5892;UTM  18      - 4,328,842.771   348,574.779   MT  0.99988234   -1 06 16.0
 JV5892
 JV5892!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5892!SPC MD       -   1.00000514  x   0.99995718  =   0.99996232
 JV5892!UTM  18      -   1.00000514  x   0.99988234  =   0.99988748
 JV5892
 JV5892_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4857428842(NAD 83)
 JV5892
 JV5892                          SUPERSEDED SURVEY CONTROL
 JV5892
 JV5892  NAD 83(1986)-  39 05 44.08801(N)    076 45 03.70971(W) AD(       ) 3
 JV5892  NAD 27      -  39 05 43.69740(N)    076 45 04.82068(W) AD(       ) 3
 JV5892
 JV5892.Superseded values are not recommended for survey control.
 JV5892
 JV5892.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5892.See file dsdata.pdf to determine how the superseded data were derived.
 JV5892
 JV5892_MARKER: 53 = ELEVATED TANK
 JV5892_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5892+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2003
 JV5892
 JV5892  HISTORY     - Date     Condition        Report By
 JV5892  HISTORY     - 1933     FIRST OBSERVED   CGS
 JV5892  HISTORY     - 1952     GOOD             CGS
 JV5892  HISTORY     - 1983     GOOD             USPSQD
 JV5892  HISTORY     - 20030930 GOOD             USPSQD
 JV5892
 JV5892                          STATION DESCRIPTION
 JV5892
 JV5892'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (RIB)
 JV5892'AT FORT GEORGE G. MEADE, AN ELEVATED STEEL WATER TANK 115 FT. HIGH
 JV5892'(ESTIMATED), 127.5 FT. SW OF THE SW CORNER OF A CHAPEL (MEASURED TO
 JV5892'THE CENTER OF A TANK), AND 197 FT. NW OF THE CENTERLINE OF SIMONDS
 JV5892'STREET.
 JV5892
 JV5892                          STATION RECOVERY (1983)
 JV5892
 JV5892'RECOVERY NOTE BY US POWER SQUADRON 1983 (WAY)
 JV5892'STATION RECOVERED GOOD.
 JV5892'
 JV5892'WATER TANK REMAINS AT LOCATION DESCRIBED HOWEVER BUILDING USED FOR A
 JV5892'REFERENCE IS NO LONGER A CHAPEL THERE IS A CHAPEL SSW OF TANK.  TANK
 JV5892'NOW SILVER BEING REPAINTED BIEGE AND BROWN.
 JV5892
 JV5892                          STATION RECOVERY (2003)
 JV5892
 JV5892'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5892'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6348 ***********************************************************************
 HV6348  DESIGNATION -  FORT RESET
 HV6348  PID         -  HV6348
 HV6348  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6348  COUNTRY     -  US
 HV6348  USGS QUAD   -  ANNAPOLIS (2016)
 HV6348
 HV6348                         *CURRENT SURVEY CONTROL
 HV6348  ______________________________________________________________________
 HV6348* NAD 83(1991) POSITION- 38 58 57.69469(N) 076 27 47.24160(W)   ADJUSTED
 HV6348* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6348  ______________________________________________________________________
 HV6348  GEOID HEIGHT    -        -33.387 (meters)                     GEOID18
 HV6348  LAPLACE CORR    -         -3.14  (seconds)                    DEFLEC18
 HV6348  HORZ ORDER      -  SECOND
 HV6348
 HV6348.The horizontal coordinates were established by classical geodetic methods
 HV6348.and adjusted by the National Geodetic Survey in January 1992.
 HV6348
 HV6348.The orthometric height was scaled from a topographic map.
 HV6348
 HV6348.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6348.GEOID18 height accuracy estimate available here.
 HV6348
 HV6348.Click photographs - Photos may exist for this station.
 HV6348
 HV6348.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6348
 HV6348. The following values were computed from the NAD 83(1991) position.
 HV6348
 HV6348;                    North         East     Units Scale Factor Converg.
 HV6348;SPC MD       -   146,221.740   446,516.560   MT  0.99995158   +0 20 13.1
 HV6348;SPC MD       -   479,729.16  1,464,946.41   sFT  0.99995158   +0 20 13.1
 HV6348;UTM  18      - 4,315,874.043   373,271.879   MT  0.99979776   -0 55 14.0
 HV6348
 HV6348!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6348!SPC MD       -   1.00000481  x   0.99995158  =   0.99995639
 HV6348!UTM  18      -   1.00000481  x   0.99979776  =   0.99980257
 HV6348
 HV6348:                Primary Azimuth Mark                     Grid Az
 HV6348:SPC MD       -  HORN                                     220 31 01.8
 HV6348:UTM  18      -  HORN                                     221 46 28.9
 HV6348
 HV6348_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7327115874(NAD 83)
 HV6348
 HV6348|---------------------------------------------------------------------|
 HV6348| PID    Reference Object                     Distance      Geod. Az  |
 HV6348|                                                           dddmmss.s |
 HV6348| CX2776 FORT RM                               9.110 METERS 00829     |
 HV6348| CX2778 FORT RM 2                             6.591 METERS 05904     |
 HV6348| CX2779 FORT RM 3                            14.511 METERS 09753     |
 HV6348| HV6363 BAY RIDGE HOTEL EAST CHIMNEY        APPROX. 4.9 KM 1691655.0 |
 HV6348| HV6340 ANNAPOLIS ROADS CLUBHOUSE TWR       APPROX. 3.5 KM 1854355.2 |
 HV6348| HV6335 HORN                                APPROX. 1.5 KM 2205114.9 |
 HV6348| HV6393 ANNAPOLIS ST CAPITOL BLDG DOME      APPROX. 2.4 KM 2594331.0 |
 HV6348| HV6395 ANNAPOLIS NAVAL ACAD CHAPEL         APPROX. 2.0 KM 2662621.2 |
 HV6348| HV6328 ST JOHNS COLLEGE                    APPROX. 2.5 KM 2670407.9 |
 HV6348| HV6377 BANCROFT HALL NORTH CUPOLA          APPROX. 1.7 KM 2674928.5 |
 HV6348| HV6383 ANNAPOLIS CLOCK TOWER               APPROX. 2.1 KM 2734554.8 |
 HV6348| HV6346 ANNAPOLIS LH DEPOT E CHIM           220.256 METERS 29657     |
 HV6348| CX2777 FORT RM 1                            21.379 METERS 29917     |
 HV6348|---------------------------------------------------------------------|
 HV6348
 HV6348                          SUPERSEDED SURVEY CONTROL
 HV6348
 HV6348  NAD 83(1986)-  38 58 57.69080(N)    076 27 47.25301(W) AD(       ) 2
 HV6348  NAD 27      -  38 58 57.28900(N)    076 27 48.39900(W) AD(       ) 2
 HV6348  USSD        -  38 58 57.65500(N)    076 27 48.23200(W) AD(       ) 3
 HV6348
 HV6348.Superseded values are not recommended for survey control.
 HV6348
 HV6348.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6348.See file dsdata.pdf to determine how the superseded data were derived.
 HV6348
 HV6348_MARKER: DS = TRIANGULATION STATION DISK
 HV6348_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6348_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6348_STAMPING: FORT 1910 1932
 HV6348_MARK LOGO: CGS
 HV6348_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6348
 HV6348  HISTORY     - Date     Condition        Report By
 HV6348  HISTORY     - 1903     MONUMENTED       CGS
 HV6348  HISTORY     - 1910     GOOD             CGS
 HV6348  HISTORY     - 1932     SEE DESCRIPTION  CGS
 HV6348  HISTORY     - 1951     MARK NOT FOUND   CGS
 HV6348
 HV6348                          STATION DESCRIPTION
 HV6348
 HV6348'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV6348'ON THE NE SIDE OF ENTRANCE TO SEVERN RIVER, ABOUT 1 MILE NW OF
 HV6348'GREENBURY POINT, AND 1 MILE NE OF NAVAL ACADEMY SEA WALL, ON
 HV6348'LAND BELONGING TO THE UNITED STATES LIGHTHOUSE SERVICE, FORMERLY
 HV6348'USED AS A PROVING GROUND.  STATION IS 6 FEET BACK FROM TOP OF
 HV6348'BANK PROTECTED BY A MASONRY WALL THAT HAS FALLEN DOWN IN PLACES,
 HV6348'10 FEET ABOVE HIGH-WATER MARK, AND 2 FEET N OF A BRICK GUTTER ON
 HV6348'TOP OF BANK.  IT IS 5 PACES NW OF AN OLD TARGET PIT.  STATION
 HV6348'MARK IS A NAIL IN A PINE STUB IN THE CENTER OF A 4-INCH TILE PIPE
 HV6348'SET IN THE GROUND WITH TOP FLUSH AT SURFACE.  REFERENCE MARK IS
 HV6348'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6348'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6348'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6348'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 HV6348'IS 9.12 METERS FROM STATION N 8 DEG 22 MIN E.
 HV6348'DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 HV6348'FOLLOWS--ST. ANNES CHURCH SPIRE, 1-1/4 MILES, S 68 DEG 32 MIN W.
 HV6348'STATEHOUSE DOME, 1-1/4 MILES, S 79 DEG 44 MIN W.  CHAPEL DOME, NAVAL
 HV6348'ACADEMY, 1 MILE, S 86 DEG 27 MIN W.  S CHIMNEY OF YELLOW HOUSE
 HV6348'WITH RED ROOF, 80 YARDS, N 53 DEG 02 MIN W.
 HV6348
 HV6348                          STATION RECOVERY (1932)
 HV6348
 HV6348'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6348'THE STATION MARK WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.  THE
 HV6348'TILE WAS FILLED WITH CONCRETE AND A STANDARD DISK STATION MARK
 HV6348'PLACED AT THE CENTER.  THE ORIGINAL REFERENCE MARK (MARYLAND
 HV6348'SHELL FISH SURVEY MONUMENT) IS LOST.  IT WAS FOUND LYING LOOSE ON
 HV6348'THE SURFACE OF THE GROUND NEAR THE STATION.
 HV6348'
 HV6348'THREE NEW REFERENCE MARKS WERE ESTABLISHED AND MARKED BY
 HV6348'STANDARD BRONZE DISKS SET IN CONCRETE, IN THE TOP OF TILE.
 HV6348
 HV6348                          STATION RECOVERY (1951)
 HV6348
 HV6348'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951 (EJP)
 HV6348'SITE OF STATION IS BEHIND LOCATION OF SEA PLANE HANGAR AND
 HV6348'RAMP.  TARGET PIT WAS LOCATED BUT THE OLD HOUSE WAS REMOVED ABOUT
 HV6348'1940 AND THE AREA REGRADED.  A TWO-HOUR SEARCH FAILED TO LOCATE
 HV6348'THE STATION OR ANY REFERENCE MARKS.  STATION IS PRESUMED TO BE
 HV6348'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4693 ***********************************************************************
 JV4693  DESIGNATION -  FORT RITCHIE SITE B TANK
 JV4693  PID         -  JV4693
 JV4693  STATE/COUNTY-  MD/WASHINGTON
 JV4693  COUNTRY     -  US
 JV4693  USGS QUAD   -  FUNKSTOWN (2017)
 JV4693
 JV4693                         *CURRENT SURVEY CONTROL
 JV4693  ______________________________________________________________________
 JV4693* NAD 83(1991) POSITION- 39 30 38.75807(N) 077 43 59.73320(W)   ADJUSTED
 JV4693  ______________________________________________________________________
 JV4693  GEOID HEIGHT    -        -33.917 (meters)                     GEOID18
 JV4693  LAPLACE CORR    -          5.57  (seconds)                    DEFLEC18
 JV4693  HORZ ORDER      -  THIRD
 JV4693
 JV4693.The horizontal coordinates were established by classical geodetic methods
 JV4693.and adjusted by the National Geodetic Survey in January 1992.
 JV4693
 JV4693.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4693.GEOID18 height accuracy estimate available here.
 JV4693
 JV4693.Click photographs - Photos may exist for this station.
 JV4693
 JV4693.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4693
 JV4693. The following values were computed from the NAD 83(1991) position.
 JV4693
 JV4693;                    North         East     Units Scale Factor Converg.
 JV4693;SPC MD       -   204,963.496   336,939.571   MT  1.00001119   -0 27 36.8
 JV4693;SPC MD       -   672,451.07  1,105,442.58   sFT  1.00001119   -0 27 36.8
 JV4693;SPC WV N     -   113,706.014   751,921.476   MT  0.99994275   +1 07 36.4
 JV4693;SPC WV N     -   373,050.48  2,466,929.04   sFT  0.99994275   +1 07 36.4
 JV4693;UTM  18      - 4,377,026.788   265,016.168   MT  1.00027989   -1 44 23.1
 JV4693
 JV4693_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6501677026(NAD 83)
 JV4693
 JV4693                          SUPERSEDED SURVEY CONTROL
 JV4693
 JV4693  NAD 83(1986)-  39 30 38.75816(N)    077 43 59.74298(W) AD(       ) 3
 JV4693  NAD 27      -  39 30 38.40100(N)    077 44 00.76900(W) AD(       ) 3
 JV4693
 JV4693.Superseded values are not recommended for survey control.
 JV4693
 JV4693.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4693.See file dsdata.pdf to determine how the superseded data were derived.
 JV4693
 JV4693_MARKER: 53 = ELEVATED TANK
 JV4693
 JV4693  HISTORY     - Date     Condition        Report By
 JV4693  HISTORY     - 1955     FIRST OBSERVED   CGS
 JV4693
 JV4693                          STATION DESCRIPTION
 JV4693
 JV4693'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4693'THE STATION IS LOCATED ABOUT 4.5 MILES WEST OF BOONSBORO AND 3.5
 JV4693'MILES NORTH OF SHARPSBURG.  THE TANK IS SUPPORTED ON A 4-LEGGED
 JV4693'STRUCTURE, PAINTED SILVER AND IT IS ABOUT 80 FEET HIGH.
 JV4693'
 JV4693'THE POINT OBSERVED WAS THE APEX OF THE TANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4683 ***********************************************************************
 JV4683  DESIGNATION -  FORT RITCHIE SITE C TOWER
 JV4683  PID         -  JV4683
 JV4683  STATE/COUNTY-  MD/WASHINGTON
 JV4683  COUNTRY     -  US
 JV4683  USGS QUAD   -  SMITHSBURG (2016)
 JV4683
 JV4683                         *CURRENT SURVEY CONTROL
 JV4683  ______________________________________________________________________
 JV4683* NAD 83(1991) POSITION- 39 41 46.93221(N) 077 30 45.46302(W)   ADJUSTED
 JV4683  ______________________________________________________________________
 JV4683  GEOID HEIGHT    -        -33.566 (meters)                     GEOID18
 JV4683  LAPLACE CORR    -          8.94  (seconds)                    DEFLEC18
 JV4683  HORZ ORDER      -  THIRD
 JV4683
 JV4683.The horizontal coordinates were established by classical geodetic methods
 JV4683.and adjusted by the National Geodetic Survey in January 1992.
 JV4683
 JV4683.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4683.GEOID18 height accuracy estimate available here.
 JV4683
 JV4683.Click photographs - Photos may exist for this station.
 JV4683
 JV4683.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4683
 JV4683. The following values were computed from the NAD 83(1991) position.
 JV4683
 JV4683;                    North         East     Units Scale Factor Converg.
 JV4683;SPC MD       -   225,441.381   356,029.323   MT  1.00005240   -0 19 18.3
 JV4683;SPC MD       -   739,635.60  1,168,072.87   sFT  1.00005240   -0 19 18.3
 JV4683;SPC PA S     -    40,337.398   620,360.453   MT  1.00004550   +0 09 14.4
 JV4683;SPC PA S     -   132,340.28  2,035,299.25   sFT  1.00004550   +0 09 14.4
 JV4683;UTM  18      - 4,397,076.427   284,562.995   MT  1.00017145   -1 36 19.7
 JV4683
 JV4683_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8456297076(NAD 83)
 JV4683
 JV4683                          SUPERSEDED SURVEY CONTROL
 JV4683
 JV4683  NAD 83(1986)-  39 41 46.93180(N)    077 30 45.47564(W) AD(       ) 3
 JV4683  NAD 27      -  39 41 46.58900(N)    077 30 46.51600(W) AD(       ) 3
 JV4683
 JV4683.Superseded values are not recommended for survey control.
 JV4683
 JV4683.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4683.See file dsdata.pdf to determine how the superseded data were derived.
 JV4683
 JV4683_MARKER: 55 = TOWER
 JV4683_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4683+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2011
 JV4683
 JV4683  HISTORY     - Date     Condition        Report By
 JV4683  HISTORY     - 1955     FIRST OBSERVED   CGS
 JV4683  HISTORY     - 1964     GOOD             CGS
 JV4683  HISTORY     - 20110309 GOOD             GEOCAC
 JV4683  HISTORY     - 20150401 GOOD             JOHFRA
 JV4683
 JV4683                          STATION DESCRIPTION
 JV4683
 JV4683'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4683'THE STATION IS ON QUIRAUK MOUNTAIN.  IT IS 1 MILE SOUTHWEST OF CAMP
 JV4683'RITCHIE.  IT IS A FOUR LEGGED STRUCTURAL STEEL TOWER, RED AND ORANGE
 JV4683'IN COLOR, AND 200 FEET HIGH.  THE POINT INTERSECTED WAS THE
 JV4683'TOP-CENTER OF THE TOWER.
 JV4683
 JV4683                          STATION RECOVERY (1964)
 JV4683
 JV4683'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (EP)
 JV4683'STATION RECOVERED AS DESCRIBED AND FOUND IN GOOD CONDITION.
 JV4683
 JV4683                          STATION RECOVERY (2011)
 JV4683
 JV4683'RECOVERY NOTE BY GEOCACHING 2011 (LPC)
 JV4683'RECOVERED IN GOOD CONDITION.
 JV4683
 JV4683                          STATION RECOVERY (2015)
 JV4683
 JV4683'RECOVERY NOTE BY JOHNSON-FRANK 2015 (LJS)
 JV4683'FORT RITCHIE SITE TOWER C.  THE TOWER IS FRESHLY PAINTED WHITE AND
 JV4683'BRIGHT RED AND HAS A RED/WHITE STROBE BEACON.  NOTE-THE STROBE IS
 JV4683'ECCENTRIC TO THE CENTER OF THE TOWER.  THERE ARE SEVERAL TOWERS IN
 JV4683'CLOSE PROXIMITY TO TOWER C.  THE TOWER IS APPROXIMATELY 4 M (13.1 FT)
 JV4683'SQUARE AND DISTINCTIVE.  ALL NEIGHBORING TOWERS ARE SLENDER AND ALL
 JV4683'ARE ILLUMINATED WITH RED LIGHTS.  THE STROBE ATOP TOWER C FLASHES
 JV4683'WHITE DURING THE DAY AND RED AT NIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4981 ***********************************************************************
 HV4981  DESIGNATION -  FORT WASH ESTATES WSSC TANK
 HV4981  PID         -  HV4981
 HV4981  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4981  COUNTRY     -  US
 HV4981  USGS QUAD   -  MOUNT VERNON (2019)
 HV4981
 HV4981                         *CURRENT SURVEY CONTROL
 HV4981  ______________________________________________________________________
 HV4981* NAD 83(1993) POSITION- 38 42 31.10865(N) 077 00 55.40447(W)   ADJUSTED
 HV4981  ______________________________________________________________________
 HV4981  GEOID HEIGHT    -        -32.465 (meters)                     GEOID18
 HV4981  LAPLACE CORR    -         -2.62  (seconds)                    DEFLEC18
 HV4981  HORZ ORDER      -  THIRD
 HV4981
 HV4981.The horizontal coordinates were established by classical geodetic methods
 HV4981.and adjusted by the National Geodetic Survey in November 1994.
 HV4981
 HV4981.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4981.GEOID18 height accuracy estimate available here.
 HV4981
 HV4981.Click photographs - Photos may exist for this station.
 HV4981
 HV4981.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4981
 HV4981. The following values were computed from the NAD 83(1993) position.
 HV4981
 HV4981;                    North         East     Units Scale Factor Converg.
 HV4981;SPC MD       -   115,663.388   398,661.419   MT  0.99995408   -0 00 34.8
 HV4981;SPC MD       -   379,472.30  1,307,941.67   sFT  0.99995408   -0 00 34.8
 HV4981;UTM  18      - 4,286,372.813   324,762.421   MT  0.99997816   -1 15 38.4
 HV4981
 HV4981_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2476286372(NAD 83)
 HV4981
 HV4981                          SUPERSEDED SURVEY CONTROL
 HV4981
 HV4981  NAD 83(1991)-  38 42 31.10716(N)    077 00 55.40568(W) AD(       ) 3
 HV4981  NAD 83(1986)-  38 42 31.10672(N)    077 00 55.41837(W) AD(       ) 3
 HV4981  NAD 27      -  38 42 30.69415(N)    077 00 56.50640(W) AD(       ) 3
 HV4981
 HV4981.Superseded values are not recommended for survey control.
 HV4981
 HV4981.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4981.See file dsdata.pdf to determine how the superseded data were derived.
 HV4981
 HV4981_MARKER: 53 = ELEVATED TANK
 HV4981
 HV4981  HISTORY     - Date     Condition        Report By
 HV4981  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV4981
 HV4981                          STATION DESCRIPTION
 HV4981
 HV4981'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV4981'6.5 MILES SOUTH ALONG STATE HIGHWAY 210 FROM THE JUNCTION OF THE
 HV4981'HIGHWAY AND INTERSTATE HIGHWAY 495 ABOUT 1 MILE WEST OF OXON HILL,
 HV4981'THENCE WEST ALONG OLD FORT ROAD FOR 1.5 MILES, THENCE SOUTH ALONG
 HV4981'A PAVED ROAD FOR 0.05 MILE TO THE STATION ON THE RIGHT.
 HV4981'
 HV4981'THE STATION IS THE CENTER OF THE BOTTOM OF A FEED PIPE OF A 110
 HV4981'FOOT HIGH, ELEVATED WATER TANK.  A TRAVERSE CONNECTION WAS MADE
 HV4981'TO TRIANGULATION STATION TREGO, DISTANCE BEING 144.44 FEET (44.025
 HV4981'METERS) NORTHEAST OF STATION TREGO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4940 ***********************************************************************
 HV4940  DESIGNATION -  FORT WASHINGTON LIGHT
 HV4940  PID         -  HV4940
 HV4940  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4940  COUNTRY     -  US
 HV4940  USGS QUAD   -  MOUNT VERNON (2019)
 HV4940
 HV4940                         *CURRENT SURVEY CONTROL
 HV4940  ______________________________________________________________________
 HV4940* NAD 83(1993) POSITION- 38 42 44.18035(N) 077 02 12.80035(W)   ADJUSTED
 HV4940  ______________________________________________________________________
 HV4940  GEOID HEIGHT    -        -32.429 (meters)                     GEOID18
 HV4940  LAPLACE CORR    -         -2.43  (seconds)                    DEFLEC18
 HV4940  HORZ ORDER      -  THIRD
 HV4940
 HV4940.The horizontal coordinates were established by classical geodetic methods
 HV4940.and adjusted by the National Geodetic Survey in November 1994.
 HV4940
 HV4940.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4940.GEOID18 height accuracy estimate available here.
 HV4940
 HV4940.Click photographs - Photos may exist for this station.
 HV4940
 HV4940.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4940
 HV4940. The following values were computed from the NAD 83(1993) position.
 HV4940
 HV4940;                    North         East     Units Scale Factor Converg.
 HV4940;SPC MD       -   116,066.985   396,791.686   MT  0.99995390   -0 01 23.4
 HV4940;SPC MD       -   380,796.43  1,301,807.39   sFT  0.99995390   -0 01 23.4
 HV4940;SPC VA N     - 2,117,075.125 3,627,243.982   MT  0.99994975   +0 54 47.4
 HV4940;SPC VA N     - 6,945,770.64 11,900,382.96   sFT  0.99994975   +0 54 47.4
 HV4940;UTM  18      - 4,286,817.148   322,901.893   MT  0.99998623   -1 16 27.2
 HV4940
 HV4940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2290186817(NAD 83)
 HV4940
 HV4940                          SUPERSEDED SURVEY CONTROL
 HV4940
 HV4940  NAD 83(1991)-  38 42 44.17828(N)    077 02 12.80238(W) AD(       ) 3
 HV4940  NAD 83(1986)-  38 42 44.18128(N)    077 02 12.81470(W) AD(       ) 3
 HV4940  NAD 27      -  38 42 43.75800(N)    077 02 13.90400(W) AD(       ) 3
 HV4940  USSD        -  38 42 44.12500(N)    077 02 13.69100(W) AD(       ) 3
 HV4940
 HV4940.Superseded values are not recommended for survey control.
 HV4940
 HV4940.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4940.See file dsdata.pdf to determine how the superseded data were derived.
 HV4940
 HV4940_MARKER: 14 = NAVIGATION LIGHT
 HV4940
 HV4940  HISTORY     - Date     Condition        Report By
 HV4940  HISTORY     - 1959     FIRST OBSERVED   CGS
 HV4940  HISTORY     - 1972     GOOD             NGS
 HV4940  HISTORY     - 1974     GOOD             NGS
 HV4940
 HV4940                          STATION DESCRIPTION
 HV4940
 HV4940'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 (RDO)
 HV4940'AFTER COMPARING THE RELATIVE POSITIONS OF FORT WASHINGTON LIGHT
 HV4940'NO. 80 AND STATION FORT 1928 WITH THE POSITION OF THIS STATION IT
 HV4940'IS BELIEVED THAT THIS STATION WAS THE TOP CENTER OF THE 12
 HV4940'FT. SQUARE WOODEN FORT WASHINGTON BELL AND LIGHT TOWER.  THE BELL
 HV4940'IS LOCATED IN THE CENTER OF THE TOWER AND HAS AN ENCLOSED GABLE
 HV4940'ROOF OVER IT.  FORT WASHINGTON LIGHT NO. 80 IS THE LIGHT WHICH
 HV4940'IS MOUNTED ON THE EAST SIDE OF THE TOWER.  STATION FORT IS
 HV4940'LOCATED ABOUT 4 FT. FROM THE BASE OF THE EAST SIDE OF THE TOWER.
 HV4940
 HV4940                          STATION RECOVERY (1974)
 HV4940
 HV4940'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RDB)
 HV4940'STATION IS EVIDENTLY THE CENTER OF THE LIGHTHOUSE SUPPORTING
 HV4940'FORT WASHINGTON LIGHT NO 80 AT FORT WASHINGTON.  A FOG BELL IS
 HV4940'MOUNTED AT THE CENTER OF THE LIGHTHOUSE, AND LIGHT NUMBER 80 IS
 HV4940'MOUNTED AT THE WEST EDGE.  OBSERVED AZIMUTHS TO THE CENTER OF THE
 HV4940'LIGHTHOUSE CHECKED WELL WITH AZIMUTHS COMPUTED FROM THE PUBLISHED
 HV4940'POSITION OF THIS STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6109 ***********************************************************************
 JV6109  HT_MOD      -  This is a Height Modernization Survey Station.
 JV6109  DESIGNATION -  FOSTER
 JV6109  PID         -  JV6109
 JV6109  STATE/COUNTY-  MD/BALTIMORE
 JV6109  COUNTRY     -  US
 JV6109  USGS QUAD   -  HEREFORD (2016)
 JV6109
 JV6109                         *CURRENT SURVEY CONTROL
 JV6109  ______________________________________________________________________
 JV6109* NAD 83(2011) POSITION- 39 34 44.11396(N) 076 42 48.20806(W)   ADJUSTED
 JV6109* NAD 83(2011) ELLIP HT-   182.438 (meters)        (06/27/12)   ADJUSTED
 JV6109* NAD 83(2011) EPOCH   -  2010.00
 JV6109* NAVD 88 ORTHO HEIGHT -   214.66  (meters)      704.3   (feet) GPS OBS
 JV6109  ______________________________________________________________________
 JV6109  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV6109  GEOID HEIGHT    -        -32.236 (meters)                     GEOID99
 JV6109  GEOID HEIGHT    -        -32.217 (meters)                     GEOID18
 JV6109  NAD 83(2011) X  -  1,131,361.858 (meters)                     COMP
 JV6109  NAD 83(2011) Y  - -4,790,998.752 (meters)                     COMP
 JV6109  NAD 83(2011) Z  -  4,042,177.059 (meters)                     COMP
 JV6109  LAPLACE CORR    -         -2.37  (seconds)                    DEFLEC18
 JV6109
 JV6109  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6109  Standards:
 JV6109         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6109            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6109  -------------------------------------------------------------------
 JV6109  NETWORK    0.60   1.00           0.27   0.21   0.51     -0.05471370
 JV6109  -------------------------------------------------------------------
 JV6109  Click here for local accuracies and other accuracy information.
 JV6109
 JV6109.The horizontal coordinates were established by GPS observations
 JV6109.and adjusted by the National Geodetic Survey in June 2012.
 JV6109
 JV6109.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6109.been affixed to the stable North American tectonic plate. See 
 JV6109.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6109
 JV6109.The horizontal coordinates are valid at the epoch date displayed above
 JV6109.which is a decimal equivalence of Year/Month/Day.
 JV6109
 JV6109.The orthometric height was determined by GPS observations and a
 JV6109.high-resolution geoid model using precise GPS observation and
 JV6109.processing techniques.
 JV6109
 JV6109.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6109.GEOID18 height accuracy estimate available here.
 JV6109
 JV6109.Click photographs - Photos may exist for this station.
 JV6109
 JV6109.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6109
 JV6109.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6109
 JV6109.The ellipsoidal height was determined by GPS observations
 JV6109.and is referenced to NAD 83.
 JV6109
 JV6109. The following values were computed from the NAD 83(2011) position.
 JV6109
 JV6109;                    North         East     Units Scale Factor Converg.
 JV6109;SPC MD       -   212,315.931   424,624.883   MT  1.00002510   +0 10 47.6
 JV6109;SPC MD       -   696,573.18  1,393,123.47   sFT  1.00002510   +0 10 47.6
 JV6109;UTM  18      - 4,382,425.322   352,846.888   MT  0.99986660   -1 05 30.7
 JV6109
 JV6109!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6109!SPC MD       -   0.99997138  x   1.00002510  =   0.99999648
 JV6109!UTM  18      -   0.99997138  x   0.99986660  =   0.99983798
 JV6109
 JV6109:                Primary Azimuth Mark                     Grid Az
 JV6109:SPC MD       -  FOSTER RM 1 AZIMUTH                      096 59 26.7
 JV6109:UTM  18      -  FOSTER RM 1 AZIMUTH                      098 15 45.0
 JV6109
 JV6109_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5284682425(NAD 83)
 JV6109
 JV6109|---------------------------------------------------------------------|
 JV6109| PID    Reference Object                     Distance      Geod. Az  |
 JV6109|                                                           dddmmss.s |
 JV6109| JV6080 BALTIMORE ELMIRA AIRWAY BCN 3       APPROX.22.3 KM 0072309.3 |
 JV6109| CA9440 FOSTER RM 3                          41.544 METERS 01752     |
 JV6109| CA9438 FOSTER RM 1 AZIMUTH                                0971014.3 |
 JV6109| JV6101 BALTIMORE ELMIRA AIRWAYS BCN 1      APPROX.11.4 KM 1204220.1 |
 JV6109| CA9439 FOSTER RM 2                          27.857 METERS 27645     |
 JV6109|---------------------------------------------------------------------|
 JV6109
 JV6109                          SUPERSEDED SURVEY CONTROL
 JV6109
 JV6109  NAD 83(2007)-  39 34 44.11413(N)    076 42 48.20871(W) AD(2002.00) 0
 JV6109  ELLIP H (02/10/07)  182.459  (m)                       GP(2002.00)    
 JV6109  ELLIP H (08/30/02)  182.464  (m)                       GP(       ) 4 2
 JV6109  NAD 83(1991)-  39 34 44.11453(N)    076 42 48.20873(W) AD(       ) 1
 JV6109  ELLIP H (04/08/97)  182.413  (m)                       GP(       ) 3 1
 JV6109  NAD 83(1991)-  39 34 44.11493(N)    076 42 48.20924(W) AD(       ) 1
 JV6109  NAD 83(1986)-  39 34 44.10941(N)    076 42 48.21514(W) AD(       ) 1
 JV6109  NAD 27      -  39 34 43.73000(N)    076 42 49.30900(W) AD(       ) 1
 JV6109  NAVD 88 (04/08/97)  214.7    (m)  GEOID93  model used  GPS OBS        
 JV6109  NGVD 29 (11/16/90)  215.1    (m)  RAPSU86  model used  GPS OBS        
 JV6109
 JV6109.Superseded values are not recommended for survey control.
 JV6109
 JV6109.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6109.See file dsdata.pdf to determine how the superseded data were derived.
 JV6109
 JV6109_STAMPING: FOSTER 1933
 JV6109_MARK LOGO: CGS
 JV6109_PROJECTION: FLUSH
 JV6109_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6109+SATELLITE: SATELLITE OBSERVATIONS - November 12, 2018
 JV6109
 JV6109  HISTORY     - Date     Condition        Report By
 JV6109  HISTORY     - 1933     MONUMENTED       CGS
 JV6109  HISTORY     - 1935     GOOD             CGS
 JV6109  HISTORY     - 1939     GOOD             CGS
 JV6109  HISTORY     - 1961     GOOD             LOCENG
 JV6109  HISTORY     - 1964     GOOD             CGS
 JV6109  HISTORY     - 19880617 GOOD
 JV6109  HISTORY     - 19950222 GOOD             MCCRON
 JV6109  HISTORY     - 19970615 GOOD             MD-005
 JV6109  HISTORY     - 19971114 GOOD             DMW
 JV6109  HISTORY     - 19990111 GOOD             DMW
 JV6109  HISTORY     - 20181112 GOOD             DEWDAV
 JV6109  HISTORY     - 20200805 MARK NOT FOUND   MD-005
 JV6109
 JV6109                          STATION DESCRIPTION
 JV6109
 JV6109'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV6109'STATION IS ON THE PROPERTY OF MRS. GEORGE E. FOSTER.  STATION
 JV6109'IS 30 FEET E OF A N AND S DIRT ROAD, 80 FEET SSE OF THE T-ROAD
 JV6109'INTERSECTION.
 JV6109'
 JV6109'THE SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD
 JV6109'BRONZE DISKS SET IN CONCRETE.
 JV6109'
 JV6109'REFERENCE MARK NO.2 IS 91.36 FEET NW OF THE STATION ON THE
 JV6109'OPPOSITE SIDE OF THE ROAD AT THE SW CORNER OF THE T-ROAD
 JV6109'INTERSECTION TO THE W, 35 FEET W OF THE N AND S ROAD, 18 FEET S
 JV6109'OF THE CENTER LINE OF THE T-ROAD W.
 JV6109'
 JV6109'REFERENCE MARK NO.3 IS 136.30 FEET NNE OF THE STATION IN A PLANE OF
 JV6109'S FACE OF DWELLING HOUSE AND 40 FEET E OF THE SE CORNER OF THE
 JV6109'DWELLING.
 JV6109'
 JV6109'REFERENCE MARK NO.1--0.35 MILE SE OF THE STATION ON THE DIRT ROAD
 JV6109'PAST THE STATION, IN THE SW CORNER OF OLD BARN IN THE FORK OF THE
 JV6109'DIRT ROAD, 10 INCHES W OF THE W FACE OF THE BARN, AND 6 INCHES N
 JV6109'OF THE S FACE, 24 FEET S OF THE CENTER LINE OF THE LEFT FORK.
 JV6109'
 JV6109'TO REACH IT, GO W FROM THE YORK ROAD, HIGHWAY 111, JUST N OF
 JV6109'HEREFORD, TURN W ON THE MT. CARMEL ROAD AND GO 3.3 MILES TO THE
 JV6109'CEDAR GROVE CHURCH ON THE S SIDE OF THE ROAD, TURN LEFT GO S ON
 JV6109'DIRT ROAD (PINE HILL ROAD) 0.4 MILE TO THE HOME OF MR. CLAUDE
 JV6109'ENSOR ON THE E SIDE OF THE ROAD AT A T-ROAD INTERSECTION WHICH IS
 JV6109'THE BENSON ROAD.
 JV6109'
 JV6109'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6109
 JV6109                          STATION RECOVERY (1935)
 JV6109
 JV6109'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (CFM)
 JV6109'THE STATION MARKER AND TWO REFERENCE MARKS WERE READILY FOUND
 JV6109'FROM THE DESCRIPTION.  THE AZIMUTH MARK WAS POINTED OUT TO ME
 JV6109'BY A FARMER WHO LIVED NEARBY, BUT I DID NOT PERSONALLY VISIT
 JV6109'IT.  IT MIGHT BE WELL TO KNOW THAT REFERENCE MARK NO.2 IS SITUATED
 JV6109'WITHIN A FEW FEET OF THE BASE OF THE ROAD SIGN BENSON MILL ROAD.
 JV6109
 JV6109                          STATION RECOVERY (1939)
 JV6109
 JV6109'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV6109'STATION IS LOCATED ON PROPERTY NOW OWNED BY VIOLA FOSTER WHO IS
 JV6109'THE DAUGHTER OF THE FORMER OWNER, MRS. G.E. FOSTER.  STATION IS
 JV6109'30 FEET E OF A N-S DIRT ROAD, 80 FEET SSE OF A T-ROAD INTERSECTION
 JV6109'AND 200 FEET SSE OF THE HOUSE OF VIOLA FOSTER.  MARK SET IN
 JV6109'CONCRETE FLUSH WITH GROUND.
 JV6109'
 JV6109'REFERENCE MARK NO.2 IS NW OF STATION ON THE OPPOSITE SIDE OF
 JV6109'THE ROAD AT THE SW CORNER OF A T-INTERSECTION 36 FEET W OF A N-S
 JV6109'ROAD AND 18 FEET S OF A T-ROAD W.  MARK PROJECTS 4 INCHES.
 JV6109'
 JV6109'REFERENCE MARK NO.3 IS NNE OF STATION, MARK PROJECTS 2 INCHES, 40
 JV6109'FEET E OF THE HOUSE AND 6 FEET W OF A 10-INCH PEAR TREE.
 JV6109'
 JV6109'REFERENCE MARK NO.1 (AZIMUTH MARK) IS APPROXIMATELY 0.35 MILE
 JV6109'SE OF STATION, MARK PROJECTS 4 INCHES, AT THE SW CORNER OF AN
 JV6109'OLD BARN NEAR THE FORK OF A DIRT ROAD 10 INCHES W OF THE SW CORNER
 JV6109'OF THE BARN AND 24 FEET S OF CENTER LINE OF THE LEFT FORK.
 JV6109'
 JV6109'TO REACH FROM STATION GO NE ON DIRT ROAD TO OLD BARN AT FORK,
 JV6109'TAKE RIGHT FORK AND GO 50 YARDS TO MARK AT SW CORNER OF BARN.
 JV6109'
 JV6109'TO REACH STATION FROM MT. CARMEL CHURCH, GO SE ON PAVED ROAD
 JV6109'FOR 1.15 MILES TO A DIRT ROAD FORK RIGHT, TAKE RIGHT FORK AND
 JV6109'GO SE AND S ON DIRT ROAD FOR 0.45 MILE TO A SIDE ROAD RIGHT AT
 JV6109'TOP OF A HILL NEAR VIOLA FOSTERS FARM AND STATION ON THE LEFT.
 JV6109
 JV6109                          STATION RECOVERY (1961)
 JV6109
 JV6109'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1961
 JV6109'RECOVERED BY EC BALLING MAPS, INC.
 JV6109'
 JV6109'STATION AND AZIMUTH MARK WAS FOUND IN GOOD CONDITION.
 JV6109'
 JV6109'THE BARN USED IN DESCRIPTION OF THE AZIMUTH MARK HAS BEEN
 JV6109'DESTROYED.  THE FOUNDATION OF BARN IS STILL THERE.  AZIMUTH
 JV6109'MARK NOT DISTURBED.
 JV6109
 JV6109                          STATION RECOVERY (1964)
 JV6109
 JV6109'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (LNS)
 JV6109'STATION AND 1 REFERENCE MARK WERE RECOVERED.  AZIMUTH MARK WAS
 JV6109'NOT SEARCHED FOR.  STATION MARK HAS BEEN CHIPPED AND MUTILATED
 JV6109'BY FARM MACHINERY.  ROAD TO STATION NOW PAVED.
 JV6109
 JV6109                          STATION RECOVERY (1988)
 JV6109
 JV6109'RECOVERED 1988
 JV6109'RECOVERED IN GOOD CONDITION.
 JV6109
 JV6109                          STATION RECOVERY (1995)
 JV6109
 JV6109'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6109'STATION WAS FOUND BY ORIGINAL DESCRIPTION. HOWEVER A NEW DESCRIPTION
 JV6109'IS AS FOLLOWS. TO REACH STATION FROM THE ROUTE 137 (MT CARMEL ROAD)
 JV6109'OVERPASS OVER I-83 AT EXIT 27, GO WEST ON ROUTE 137 FOR 2.55 MI (4.10
 JV6109'KM) TO THE INTERSECTION WITH CEDAR GROVE ROAD. TURN LEFT ON CEDAR
 JV6109'GROVE ROAD AND GO 0.40 MI (0.64 KM) TO THE INTERSECTION WITH BENSON
 JV6109'MILL ROAD AND THE STATION ON THE LEFT ABOUT 80 FT (24.4 M) PAST THE
 JV6109'INTERSECTION.
 JV6109
 JV6109                          STATION RECOVERY (1997)
 JV6109
 JV6109'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV6109'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) RECOVERED
 JV6109'AS DESCRIBED.
 JV6109
 JV6109                          STATION RECOVERY (1997)
 JV6109
 JV6109'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6109'RECOVERED AS DESCRIBED.
 JV6109
 JV6109                          STATION RECOVERY (1999)
 JV6109
 JV6109'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1999 (DMM)
 JV6109'RECOVERED IN GOOD CONDITION.
 JV6109
 JV6109                          STATION RECOVERY (2018)
 JV6109
 JV6109'RECOVERY NOTE BY DEWBERRY DAVIS 2018 (GDS)
 JV6109'RECOVERED IN GOOD CONDITION.
 JV6109
 JV6109                          STATION RECOVERY (2020)
 JV6109
 JV6109'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (DFL)
 JV6109'CONCRETE MONUMENT FOUND WITH STEM OF DISK REMAINING.  DISK AND
 JV6109'MONUMENT HAVE BEEN MUTILATED BY FARM EQUIPMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3854 ***********************************************************************
 JU3854  DESIGNATION -  FOSTER
 JU3854  PID         -  JU3854
 JU3854  STATE/COUNTY-  MD/CECIL
 JU3854  COUNTRY     -  US
 JU3854  USGS QUAD   -  NEWARK WEST (2016)
 JU3854
 JU3854                         *CURRENT SURVEY CONTROL
 JU3854  ______________________________________________________________________
 JU3854* NAD 83(1991) POSITION- 39 40 41.87249(N) 075 47 19.14880(W)   ADJUSTED
 JU3854* NAVD 88 ORTHO HEIGHT -    50.9   (meters)      167.    (feet) VERTCON3
 JU3854  ______________________________________________________________________
 JU3854  GEOID HEIGHT    -        -33.019 (meters)                     GEOID18
 JU3854  LAPLACE CORR    -          0.78  (seconds)                    DEFLEC18
 JU3854  HORZ ORDER      -  SECOND
 JU3854
 JU3854.The horizontal coordinates were established by classical geodetic methods
 JU3854.and adjusted by the National Geodetic Survey in January 1992.
 JU3854
 JU3854.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3854.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3854
 JU3854.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3854.GEOID18 height accuracy estimate available here.
 JU3854
 JU3854.Click photographs - Photos may exist for this station.
 JU3854
 JU3854.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3854
 JU3854. The following values were computed from the NAD 83(1991) position.
 JU3854
 JU3854;                    North         East     Units Scale Factor Converg.
 JU3854;SPC MD       -   224,000.836   503,927.359   MT  1.00004792   +0 45 37.0
 JU3854;SPC MD       -   734,909.41  1,653,301.68   sFT  1.00004792   +0 45 37.0
 JU3854;UTM  18      - 4,392,349.635   432,365.618   MT  0.99965632   -0 30 12.8
 JU3854
 JU3854!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3854!SPC MD       -   0.99999720  x   1.00004792  =   1.00004512
 JU3854!UTM  18      -   0.99999720  x   0.99965632  =   0.99965352
 JU3854
 JU3854:                Primary Azimuth Mark                     Grid Az
 JU3854:SPC MD       -  DREW CROW RESET                          346 06 23.9
 JU3854:UTM  18      -  DREW CROW RESET                          347 22 13.7
 JU3854
 JU3854_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3236592349(NAD 83)
 JU3854
 JU3854|---------------------------------------------------------------------|
 JU3854| PID    Reference Object                     Distance      Geod. Az  |
 JU3854|                                                           dddmmss.s |
 JU3854| JU3853 BOUNDARY MONUMENT 84 DEL MD           8.680 METERS 03409     |
 JU3854| CB1540 FOSTER RM 1                          31.287 METERS 09723     |
 JU3854| JU3835 NEWARK CHRYSLER SMALLER TANK        APPROX. 3.1 KM 1095336.9 |
 JU3854| JU3834 NEWARK CHRYSLER LARGER TANK         APPROX. 3.0 KM 1193844.9 |
 JU3854| JU3831 NEWARK E I DUPONT STINE LAB TK      APPROX. 1.9 KM 1733126.7 |
 JU3854| CB1539 FOSTER AZ MK                                       1750119.6 |
 JU3854| CB1541 FOSTER RM 2                          49.594 METERS 34026     |
 JU3854| JU3821 DREW CROW RESET                     APPROX. 2.1 KM 3465200.9 |
 JU3854|---------------------------------------------------------------------|
 JU3854
 JU3854                          SUPERSEDED SURVEY CONTROL
 JU3854
 JU3854  NAD 83(1986)-  39 40 41.86670(N)    075 47 19.15516(W) AD(       ) 2
 JU3854  NAD 27      -  39 40 41.47390(N)    075 47 20.38850(W) AD(       ) 2
 JU3854  NGVD 29 (07/19/86)   51.2    (m)          168.     (f) VERT ANG       
 JU3854
 JU3854.Superseded values are not recommended for survey control.
 JU3854
 JU3854.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3854.See file dsdata.pdf to determine how the superseded data were derived.
 JU3854
 JU3854_MARKER: DS = TRIANGULATION STATION DISK
 JU3854_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3854_STAMPING: FOSTER 1961
 JU3854_MARK LOGO: CGS
 JU3854_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3854+STABILITY: SURFACE MOTION
 JU3854
 JU3854  HISTORY     - Date     Condition        Report By
 JU3854  HISTORY     - 1961     MONUMENTED       CGS
 JU3854
 JU3854                          STATION DESCRIPTION
 JU3854
 JU3854'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3854'THE STATION IS LOCATED IN THE SOUTHWEST SECTION OF A BARN LOT,
 JU3854'2.0 MILES WEST-SOUTHWEST OF NEWARK, DELAWARE, 2-1/2 MILES
 JU3854'NORTHEAST OF ELK MILLS, MARYLAND, 3.0 MILES SOUTH OF THE
 JU3854'PENNSYLVANIA STATE LINE AND ON PROPERTY OWNED BY MR. CLARENCE
 JU3854'S. FOSTER.
 JU3854'
 JU3854'TO REACH THE STATION FROM THE POST OFFICE IN NEWARK, DELAWARE,
 JU3854'GO WEST ON MAIN STREET FOR 0.4 MILE TO A TRIPLE FORK, KEEP THE
 JU3854'LEFT FORK AND GO SOUTH-SOUTHWEST ON STATE HIGHWAY 2 AND ELKTON
 JU3854'ROAD FOR 0.4 MILE TO A PAVED SIDE ROAD, RIGHT, TURN RIGHT AND
 JU3854'GO WEST ON THE PAVED ROAD FOR 1.4 MILES TO A SIDE ROAD, RIGHT AND
 JU3854'THE AZIMAUTH MARK LOCATED ON THE LEFT, SOUTH SIDE OF THE ROAD.
 JU3854'TURN RIGHT AND GO NORTH ON THE GRAVELED ROAD FOR 0.2 MILE TO A
 JU3854'DRIVEWAY RIGHT, LEADING TO THE RESIDENCE OF MR. CLARENCE S.
 JU3854'FOSTER, TURN RIGHT AND GO WEST ON THE DRIVEWAY FOR ABOUT 0.05
 JU3854'MILE TO A GATE ON THE RIGHT, TURN RIGHT THROUGH THE GATE AND
 JU3854'GO SOUTH-SOUTHWEST ACROSS THE BARN LOT FOR 0.07 MILE TO THE
 JU3854'SOUTHWEST CORNER OF THE BARN LOT AND THE STATION AS
 JU3854'DESCRIBED.
 JU3854'
 JU3854'THE STATION MARK, A STANDARD DISK STAMPED FOSTER 1961, IS SET
 JU3854'IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 JU3854'GROUND SURFACE.  IT IS 14.6 FEET NORTH OF AN EAST AND WEST FENCE
 JU3854'LINE, 42.0 FEET EAST-NORTHEAST OF A SOUTHWEST FENCE CORNER AND
 JU3854'107.0 FEET WEST-NORTHWEST OF A SOUTHEAST FENCE CORNER.
 JU3854'
 JU3854'REFERENCE MARK 1, A STANDARD DISK STAMPED FOSTER NO 1 1961, IS SET
 JU3854'IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 2 INCHES
 JU3854'ABOVE THE GROUND SURFACE.  IT IS 1.0 FOOT NORTH OF THE EAST AND
 JU3854'WEST FENCE LINE, 4.6 FEET WEST-NORTHWEST OF THE SOUTHEAST FENCE
 JU3854'CORNER, 142.0 FEET EAST OF THE SOUTHWEST FENCE CORNER AND IS
 JU3854'ABOUT 4.0 FEET LOWER THAN THE STATION MARK.
 JU3854'
 JU3854'REFERENCE MARK 2, A STANDARD DISK STAMPED FOSTER NO 2 1961, IS
 JU3854'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 2 INCHES
 JU3854'ABOVE THE GROUND SURFACE.  IT IS 1.6 FEET EAST OF A NORTH AND
 JU3854'SOUTH FENCE LINE, 167.6 FEET NORTH OF THE SOUTHWEST FENCE CORNER
 JU3854'AND IS ABOUT 2-1/2 FEET HIGHER THAN THE STATION MARK.
 JU3854'
 JU3854'BOUNDARY MONUMENT 84, IS A 15-INCH GRANITE STONE WHICH PROJECTS
 JU3854'ABOUT 2-1/2 FEET ABOVE THE GROUND SURFACE.  THE POSITION AND
 JU3854'TRAVERSE CONNECTION WAS TAKEN TO THE APEX OF THE MONUMENT.  IT
 JU3854'IS 42.3 FEET NORTH OF THE EAST AND WEST FENCE LINE AND 59.0 FEET
 JU3854'NORTHEAST OF THE SOUTHWEST FENCE CORNER.
 JU3854'
 JU3854'AZIMUTH MARK, A STANDARD DISK STAMPED FOSTER 1961, IS SET IN TOP
 JU3854'OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS 3 INCHES ABOVE THE
 JU3854'GROUND SURFACE.  IT IS 1.7 FEET EAST OF A POWERLINE POLE NUMBER
 JU3854'1566, 35.0 FEET SOUTH OF THE APPROXIMATE CENTER OF THE GRAVELED
 JU3854'ROAD, 58.0 FEET SOUTHEAST OF A T-GRAVELED ROAD INTERSECTION AND
 JU3854'60.3 FEET SOUTH-SOUTHEAST OF THE SOUTHWEST CORNER OF A FENCE.
 JU3854'
 JU3854'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7299 ***********************************************************************
 JV7299  DESIGNATION -  FOUNTAIN
 JV7299  PID         -  JV7299
 JV7299  STATE/COUNTY-  MD/HARFORD
 JV7299  COUNTRY     -  US
 JV7299  USGS QUAD   -  BEL AIR (2016)
 JV7299
 JV7299                         *CURRENT SURVEY CONTROL
 JV7299  ______________________________________________________________________
 JV7299* NAD 83(2011) POSITION- 39 32 23.51627(N) 076 18 20.97534(W)   ADJUSTED
 JV7299* NAD 83(2011) ELLIP HT-    89.962 (meters)        (06/27/12)   ADJUSTED
 JV7299* NAD 83(2011) EPOCH   -  2010.00
 JV7299* NAVD 88 ORTHO HEIGHT -   122.8   (meters)      403.    (feet) GPS OBS
 JV7299  ______________________________________________________________________
 JV7299  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7299  GEOID HEIGHT    -        -33.140 (meters)                     GEOID93
 JV7299  GEOID HEIGHT    -        -32.847 (meters)                     GEOID18
 JV7299  NAD 83(2011) X  -  1,166,049.884 (meters)                     COMP
 JV7299  NAD 83(2011) Y  - -4,785,443.704 (meters)                     COMP
 JV7299  NAD 83(2011) Z  -  4,038,775.097 (meters)                     COMP
 JV7299  LAPLACE CORR    -         -3.41  (seconds)                    DEFLEC18
 JV7299
 JV7299  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7299  Standards:
 JV7299         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7299            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7299  -------------------------------------------------------------------
 JV7299  NETWORK    1.40   2.70           0.62   0.51   1.38      0.09509997
 JV7299  -------------------------------------------------------------------
 JV7299  Click here for local accuracies and other accuracy information.
 JV7299
 JV7299.The horizontal coordinates were established by GPS observations
 JV7299.and adjusted by the National Geodetic Survey in June 2012.
 JV7299
 JV7299.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7299.been affixed to the stable North American tectonic plate. See 
 JV7299.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7299
 JV7299.The horizontal coordinates are valid at the epoch date displayed above
 JV7299.which is a decimal equivalence of Year/Month/Day.
 JV7299
 JV7299.The orthometric height was determined by GPS observations and a
 JV7299.high-resolution geoid model.
 JV7299
 JV7299.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7299.GEOID18 height accuracy estimate available here.
 JV7299
 JV7299.Click photographs - Photos may exist for this station.
 JV7299
 JV7299.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7299
 JV7299.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7299
 JV7299.The ellipsoidal height was determined by GPS observations
 JV7299.and is referenced to NAD 83.
 JV7299
 JV7299. The following values were computed from the NAD 83(2011) position.
 JV7299
 JV7299;                    North         East     Units Scale Factor Converg.
 JV7299;SPC MD       -   208,167.955   459,674.550   MT  1.00001696   +0 26 08.5
 JV7299;SPC MD       -   682,964.37  1,508,115.59   sFT  1.00001696   +0 26 08.5
 JV7299;UTM  18      - 4,377,502.955   387,788.630   MT  0.99975502   -0 49 53.0
 JV7299
 JV7299!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7299!SPC MD       -   0.99998589  x   1.00001696  =   1.00000285
 JV7299!UTM  18      -   0.99998589  x   0.99975502  =   0.99974091
 JV7299
 JV7299_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8778877502(NAD 83)
 JV7299
 JV7299|---------------------------------------------------------------------|
 JV7299| PID    Reference Object                     Distance      Geod. Az  |
 JV7299|                                                           dddmmss.s |
 JV7299| JV7300 FOUNTAIN AZ MK                      382.423 METERS 13349     |
 JV7299|---------------------------------------------------------------------|
 JV7299
 JV7299                          SUPERSEDED SURVEY CONTROL
 JV7299
 JV7299  NAD 83(2007)-  39 32 23.51642(N)    076 18 20.97609(W) AD(2002.00) 0
 JV7299  ELLIP H (02/10/07)   89.981  (m)                       GP(2002.00)    
 JV7299  ELLIP H (08/30/02)   89.990  (m)                       GP(       ) 4 2
 JV7299  NAD 83(1991)-  39 32 23.51612(N)    076 18 20.97583(W) AD(       ) 1
 JV7299  ELLIP H (08/17/94)   89.967  (m)                       GP(       ) 4 1
 JV7299
 JV7299.Superseded values are not recommended for survey control.
 JV7299
 JV7299.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7299.See file dsdata.pdf to determine how the superseded data were derived.
 JV7299
 JV7299_MARKER: DD = SURVEY DISK
 JV7299_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7299_STAMPING: 152 FOUNTAIN 1993
 JV7299_MARK LOGO: MD-025
 JV7299_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7299_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7299+STABILITY: SURFACE MOTION
 JV7299_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7299+SATELLITE: SATELLITE OBSERVATIONS - January 27, 2001
 JV7299
 JV7299  HISTORY     - Date     Condition        Report By
 JV7299  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7299  HISTORY     - 20010127 GOOD             USPSQD
 JV7299  HISTORY     - 20011210 GOOD             NGS
 JV7299
 JV7299                          STATION DESCRIPTION
 JV7299
 JV7299'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7299'THE STATION IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 2.2 MILES
 JV7299'EAST OF BEL AIR AT THE FOUNTAIN GREEN ELEMENTARY SCHOOL.
 JV7299'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 22 AND
 JV7299'STATE HIGHWAY 543 PROCEED SOUTHEAST ALONG STATE HIGHWAY 543 0.5 MILES
 JV7299'TO THE ENTRANCE OF FOUNTAIN GREEN ELEMENTARY SCHOOL AND THE STATION
 JV7299'ON THE LEFT IN THE NORTHWEST CORNER OF THE INTERSECTION.
 JV7299'THE STATION IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7299'CONCRETE FLUSH WITH THE GROUND STAMPED 152 FOUNTAIN 1993.
 JV7299'THE STATION IS 7.2 FEET NORTHEAST FROM THE EDGE OF PAVEMENT OF STATE
 JV7299'HIGHWAY 543, 11.5 FEET SOUTHWEST FROM A LIGHT POLE, AND 65.0 FEET
 JV7299'NORTHWEST FROM A BRICK SIGN.
 JV7299
 JV7299                          STATION RECOVERY (2001)
 JV7299
 JV7299'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV7299'RECOVERED IN GOOD CONDITION.
 JV7299
 JV7299                          STATION RECOVERY (2001)
 JV7299
 JV7299'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV7299'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7300 ***********************************************************************
 JV7300  DESIGNATION -  FOUNTAIN AZ MK
 JV7300  PID         -  JV7300
 JV7300  STATE/COUNTY-  MD/HARFORD
 JV7300  COUNTRY     -  US
 JV7300  USGS QUAD   -  BEL AIR (2016)
 JV7300
 JV7300                         *CURRENT SURVEY CONTROL
 JV7300  ______________________________________________________________________
 JV7300* NAD 83(2011) POSITION- 39 32 14.93161(N) 076 18 09.41908(W)   ADJUSTED
 JV7300* NAD 83(2011) ELLIP HT-    84.050 (meters)        (06/27/12)   ADJUSTED
 JV7300* NAD 83(2011) EPOCH   -  2010.00
 JV7300* NAVD 88 ORTHO HEIGHT -   116.9   (meters)      384.    (feet) GPS OBS
 JV7300  ______________________________________________________________________
 JV7300  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7300  GEOID HEIGHT    -        -33.150 (meters)                     GEOID93
 JV7300  GEOID HEIGHT    -        -32.858 (meters)                     GEOID18
 JV7300  NAD 83(2011) X  -  1,166,356.824 (meters)                     COMP
 JV7300  NAD 83(2011) Y  - -4,785,537.689 (meters)                     COMP
 JV7300  NAD 83(2011) Z  -  4,038,567.153 (meters)                     COMP
 JV7300  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 JV7300
 JV7300  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7300  Standards:
 JV7300         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7300            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7300  -------------------------------------------------------------------
 JV7300  NETWORK    1.23   2.41           0.57   0.40   1.23      0.20443761
 JV7300  -------------------------------------------------------------------
 JV7300  Click here for local accuracies and other accuracy information.
 JV7300
 JV7300.The horizontal coordinates were established by GPS observations
 JV7300.and adjusted by the National Geodetic Survey in June 2012.
 JV7300
 JV7300.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7300.been affixed to the stable North American tectonic plate. See 
 JV7300.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7300
 JV7300.The horizontal coordinates are valid at the epoch date displayed above
 JV7300.which is a decimal equivalence of Year/Month/Day.
 JV7300
 JV7300.The orthometric height was determined by GPS observations and a
 JV7300.high-resolution geoid model.
 JV7300
 JV7300.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7300.GEOID18 height accuracy estimate available here.
 JV7300
 JV7300.Click photographs - Photos may exist for this station.
 JV7300
 JV7300.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7300
 JV7300.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7300
 JV7300.The ellipsoidal height was determined by GPS observations
 JV7300.and is referenced to NAD 83.
 JV7300
 JV7300. The following values were computed from the NAD 83(2011) position.
 JV7300
 JV7300;                    North         East     Units Scale Factor Converg.
 JV7300;SPC MD       -   207,905.307   459,952.521   MT  1.00001647   +0 26 15.7
 JV7300;SPC MD       -   682,102.66  1,509,027.56   sFT  1.00001647   +0 26 15.7
 JV7300;UTM  18      - 4,377,234.295   388,060.654   MT  0.99975427   -0 49 45.5
 JV7300
 JV7300!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7300!SPC MD       -   0.99998681  x   1.00001647  =   1.00000328
 JV7300!UTM  18      -   0.99998681  x   0.99975427  =   0.99974109
 JV7300
 JV7300_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8806077234(NAD 83)
 JV7300
 JV7300|---------------------------------------------------------------------|
 JV7300| PID    Reference Object                     Distance      Geod. Az  |
 JV7300|                                                           dddmmss.s |
 JV7300| JV7299 FOUNTAIN                            382.423 METERS 31349     |
 JV7300|---------------------------------------------------------------------|
 JV7300
 JV7300                          SUPERSEDED SURVEY CONTROL
 JV7300
 JV7300  NAD 83(2007)-  39 32 14.93175(N)    076 18 09.41981(W) AD(2002.00) 0
 JV7300  ELLIP H (02/10/07)   84.068  (m)                       GP(2002.00)    
 JV7300  ELLIP H (08/30/02)   84.072  (m)                       GP(       ) 4 2
 JV7300  NAD 83(1991)-  39 32 14.93130(N)    076 18 09.41981(W) AD(       ) 1
 JV7300  ELLIP H (08/17/94)   84.040  (m)                       GP(       ) 4 1
 JV7300
 JV7300.Superseded values are not recommended for survey control.
 JV7300
 JV7300.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7300.See file dsdata.pdf to determine how the superseded data were derived.
 JV7300
 JV7300_MARKER: DD = SURVEY DISK
 JV7300_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7300_STAMPING: 152 FOUNTAIN AZ MK 1993
 JV7300_MARK LOGO: MD-025
 JV7300_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7300_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7300+STABILITY: SURFACE MOTION
 JV7300_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7300+SATELLITE: SATELLITE OBSERVATIONS - November 01, 2001
 JV7300
 JV7300  HISTORY     - Date     Condition        Report By
 JV7300  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7300  HISTORY     - 20010127 MARK NOT FOUND   USPSQD
 JV7300  HISTORY     - 20011101 GOOD             MD-025
 JV7300  HISTORY     - 20011210 GOOD             NGS
 JV7300
 JV7300                          STATION DESCRIPTION
 JV7300
 JV7300'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7300'THE AZIMUTH MARK IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 2.25
 JV7300'MILES EAST OF THE VILLAGE OF BEL AIR.
 JV7300'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE HIGHWAY 22
 JV7300'AND STATE HIGHWAY 543 PROCEED SOUTHEAST ALONG STATE HIGHWAY 543 0.5
 JV7300'MILES TO THE ENTRANCE OF FOUNTAIN GREEN ELEMENTARY SCHOOL PASSING THE
 JV7300'STATION ON THE LEFT.  CONTINUE SOUTHEAST ALONG STATE HIGHWAY 543 0.2
 JV7300'MILES TO ITS INTERSECTION WITH CRESCENT DRIVE AND THE AZIMUTH MARK ON
 JV7300'THE RIGHT IN THE SOUTHWEST CORNER OF THE INTERSECTION.
 JV7300'THE AZIMUTH MARK IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7300'CONCRETE FLUSH WITH THE GROUND STAMPED 152 FOUNTAIN AZ MK 1993.
 JV7300'THE AZIMUTH MARK IS 1.5 FEET NORTHWEST FROM THE EDGE OF SIDEWALK, 2.0
 JV7300'FEET SOUTHWEST FROM THE FACE OF CURB OF STATE HIGHWAY 543, AND 18.0
 JV7300'FEET SOUTHEAST FROM A POWER POLE WITH NO NUMBER.
 JV7300
 JV7300                          STATION RECOVERY (2001)
 JV7300
 JV7300'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV7300'MARK NOT RECOVERED DUE TO ROAD BEING CHANGED AND CURBING MOVED.
 JV7300
 JV7300                          STATION RECOVERY (2001)
 JV7300
 JV7300'RECOVERY NOTE BY HARFORD COUNTY MARYLAND 2001 (PMJ)
 JV7300'THE STATION IS LOCATED AT THE SOUTHWEST CORNER OF THE INTERSECTION OF
 JV7300'MARYLAND ROUTE 543 AND REDFIELD ROAD.
 JV7300
 JV7300                          STATION RECOVERY (2001)
 JV7300
 JV7300'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV7300'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7213 ***********************************************************************
 JV7213  DESIGNATION -  FOX
 JV7213  PID         -  JV7213
 JV7213  STATE/COUNTY-  MD/FREDERICK
 JV7213  COUNTRY     -  US
 JV7213  USGS QUAD   -  SMITHSBURG (2016)
 JV7213
 JV7213                         *CURRENT SURVEY CONTROL
 JV7213  ______________________________________________________________________
 JV7213* NAD 83(2011) POSITION- 39 37 45.79006(N) 077 30 04.92702(W)   ADJUSTED
 JV7213* NAD 83(2011) ELLIP HT-   442.956 (meters)        (06/27/12)   ADJUSTED
 JV7213* NAD 83(2011) EPOCH   -  2010.00
 JV7213* NAVD 88 ORTHO HEIGHT -   476.3   (meters)     1563.    (feet) GPS OBS
 JV7213  ______________________________________________________________________
 JV7213  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7213  GEOID HEIGHT    -        -33.590 (meters)                     GEOID93
 JV7213  GEOID HEIGHT    -        -33.268 (meters)                     GEOID18
 JV7213  NAD 83(2011) X  -  1,064,637.688 (meters)                     COMP
 JV7213  NAD 83(2011) Y  - -4,802,813.193 (meters)                     COMP
 JV7213  NAD 83(2011) Z  -  4,046,660.307 (meters)                     COMP
 JV7213  LAPLACE CORR    -          6.19  (seconds)                    DEFLEC18
 JV7213
 JV7213  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7213  Standards:
 JV7213         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7213            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7213  -------------------------------------------------------------------
 JV7213  NETWORK    2.40   3.19           1.07   0.87   1.63      0.10019483
 JV7213  -------------------------------------------------------------------
 JV7213  Click here for local accuracies and other accuracy information.
 JV7213
 JV7213.The horizontal coordinates were established by GPS observations
 JV7213.and adjusted by the National Geodetic Survey in June 2012.
 JV7213
 JV7213.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7213.been affixed to the stable North American tectonic plate. See 
 JV7213.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7213
 JV7213.The horizontal coordinates are valid at the epoch date displayed above
 JV7213.which is a decimal equivalence of Year/Month/Day.
 JV7213
 JV7213.The orthometric height was determined by GPS observations and a
 JV7213.high-resolution geoid model.
 JV7213
 JV7213.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7213.GEOID18 height accuracy estimate available here.
 JV7213
 JV7213.Click photographs - Photos may exist for this station.
 JV7213
 JV7213.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7213
 JV7213.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7213
 JV7213.The ellipsoidal height was determined by GPS observations
 JV7213.and is referenced to NAD 83.
 JV7213
 JV7213. The following values were computed from the NAD 83(2011) position.
 JV7213
 JV7213;                    North         East     Units Scale Factor Converg.
 JV7213;SPC MD       -   217,998.698   356,954.291   MT  1.00003631   -0 18 52.8
 JV7213;SPC MD       -   715,217.40  1,171,107.54   sFT  1.00003631   -0 18 52.8
 JV7213;UTM  18      - 4,389,613.970   285,321.239   MT  1.00016744   -1 35 45.7
 JV7213
 JV7213!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7213!SPC MD       -   0.99993051  x   1.00003631  =   0.99996682
 JV7213!UTM  18      -   0.99993051  x   1.00016744  =   1.00009794
 JV7213
 JV7213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8532189613(NAD 83)
 JV7213
 JV7213                          SUPERSEDED SURVEY CONTROL
 JV7213
 JV7213  NAD 83(2007)-  39 37 45.79016(N)    077 30 04.92789(W) AD(2002.00) 0
 JV7213  ELLIP H (02/10/07)  442.987  (m)                       GP(2002.00)    
 JV7213  ELLIP H (08/30/02)  442.986  (m)                       GP(       ) 4 2
 JV7213  NAD 83(1991)-  39 37 45.79007(N)    077 30 04.92779(W) AD(       ) 1
 JV7213  ELLIP H (02/09/94)  442.921  (m)                       GP(       ) 4 1
 JV7213
 JV7213.Superseded values are not recommended for survey control.
 JV7213
 JV7213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7213.See file dsdata.pdf to determine how the superseded data were derived.
 JV7213
 JV7213_MARKER: DD = SURVEY DISK
 JV7213_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7213_STAMPING: FOX 1993
 JV7213_MARK LOGO: MD-021
 JV7213_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7213_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7213+STABILITY: SURFACE MOTION
 JV7213_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7213+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7213
 JV7213  HISTORY     - Date     Condition        Report By
 JV7213  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7213
 JV7213                          STATION DESCRIPTION
 JV7213
 JV7213'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7213'FROM INTERSECTION OF MD RTE 15 AND MD RTE 77 IN THURMONT, MD, PROCEED
 JV7213'WEST ON MD RTE 77 6 MILES (9.7 KM) TO INTERSECTION WITH STOTTLEMEYER
 JV7213'ROAD. TURN LEFT AND PROCEED 0.5 MILES (0.8 KM) SOUTH ON STOTTLEMEYER
 JV7213'ROAD TO STATION ON RIGHT. STATION IS X FEET SOUTHWEST OF A DIRT AND
 JV7213'GRAVEL DRIVE. NO OTHER REFERENCES AVAILABLE. STATION IS A BRASS DISK
 JV7213'SET IN THE TOP OF AN 8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH
 JV7213'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7301 ***********************************************************************
 JV7301  DESIGNATION -  FOXBOROUGH 2
 JV7301  PID         -  JV7301
 JV7301  STATE/COUNTY-  MD/HARFORD
 JV7301  COUNTRY     -  US
 JV7301  USGS QUAD   -  BEL AIR (2016)
 JV7301
 JV7301                         *CURRENT SURVEY CONTROL
 JV7301  ______________________________________________________________________
 JV7301* NAD 83(2011) POSITION- 39 31 53.00944(N) 076 17 44.66556(W)   ADJUSTED
 JV7301* NAD 83(2011) ELLIP HT-    85.993 (meters)        (06/27/12)   ADJUSTED
 JV7301* NAD 83(2011) EPOCH   -  2010.00
 JV7301* NAVD 88 ORTHO HEIGHT -   118.9   (meters)      390.    (feet) GPS OBS
 JV7301  ______________________________________________________________________
 JV7301  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7301  GEOID HEIGHT    -        -33.170 (meters)                     GEOID93
 JV7301  GEOID HEIGHT    -        -32.886 (meters)                     GEOID18
 JV7301  NAD 83(2011) X  -  1,167,033.433 (meters)                     COMP
 JV7301  NAD 83(2011) Y  - -4,785,817.251 (meters)                     COMP
 JV7301  NAD 83(2011) Z  -  4,038,046.954 (meters)                     COMP
 JV7301  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 JV7301
 JV7301  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7301  Standards:
 JV7301         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7301            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7301  -------------------------------------------------------------------
 JV7301  NETWORK    2.03   3.39           0.98   0.56   1.73     -0.02950786
 JV7301  -------------------------------------------------------------------
 JV7301  Click here for local accuracies and other accuracy information.
 JV7301
 JV7301.The horizontal coordinates were established by GPS observations
 JV7301.and adjusted by the National Geodetic Survey in June 2012.
 JV7301
 JV7301.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7301.been affixed to the stable North American tectonic plate. See 
 JV7301.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7301
 JV7301.The horizontal coordinates are valid at the epoch date displayed above
 JV7301.which is a decimal equivalence of Year/Month/Day.
 JV7301
 JV7301.The orthometric height was determined by GPS observations and a
 JV7301.high-resolution geoid model.
 JV7301
 JV7301.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7301.GEOID18 height accuracy estimate available here.
 JV7301
 JV7301.Click photographs - Photos may exist for this station.
 JV7301
 JV7301.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7301
 JV7301.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7301
 JV7301.The ellipsoidal height was determined by GPS observations
 JV7301.and is referenced to NAD 83.
 JV7301
 JV7301. The following values were computed from the NAD 83(2011) position.
 JV7301
 JV7301;                    North         East     Units Scale Factor Converg.
 JV7301;SPC MD       -   207,233.764   460,548.838   MT  1.00001525   +0 26 31.3
 JV7301;SPC MD       -   679,899.44  1,510,983.98   sFT  1.00001525   +0 26 31.3
 JV7301;UTM  18      - 4,376,549.911   388,641.824   MT  0.99975268   -0 49 29.4
 JV7301
 JV7301!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7301!SPC MD       -   0.99998651  x   1.00001525  =   1.00000176
 JV7301!UTM  18      -   0.99998651  x   0.99975268  =   0.99973919
 JV7301
 JV7301_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8864176549(NAD 83)
 JV7301
 JV7301|---------------------------------------------------------------------|
 JV7301| PID    Reference Object                     Distance      Geod. Az  |
 JV7301|                                                           dddmmss.s |
 JV7301| JV6759 FOXBOROUGH AZ MK                    390.254 METERS 13318     |
 JV7301|---------------------------------------------------------------------|
 JV7301
 JV7301                          SUPERSEDED SURVEY CONTROL
 JV7301
 JV7301  NAD 83(2007)-  39 31 53.00958(N)    076 17 44.66628(W) AD(2002.00) 0
 JV7301  ELLIP H (02/10/07)   86.011  (m)                       GP(2002.00)    
 JV7301  ELLIP H (08/30/02)   86.014  (m)                       GP(       ) 4 2
 JV7301  NAD 83(1991)-  39 31 53.00910(N)    076 17 44.66634(W) AD(       ) 1
 JV7301  ELLIP H (08/17/94)   85.979  (m)                       GP(       ) 4 1
 JV7301
 JV7301.Superseded values are not recommended for survey control.
 JV7301
 JV7301.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7301.See file dsdata.pdf to determine how the superseded data were derived.
 JV7301
 JV7301_MARKER: DD = SURVEY DISK
 JV7301_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7301_STAMPING: 30 FOXBOROUGH 2 1993
 JV7301_MARK LOGO: MD-025
 JV7301_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7301_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7301+STABILITY: SURFACE MOTION
 JV7301_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7301+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2002
 JV7301
 JV7301  HISTORY     - Date     Condition        Report By
 JV7301  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7301  HISTORY     - 20020720 GOOD             DMW
 JV7301
 JV7301                          STATION DESCRIPTION
 JV7301
 JV7301'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7301'THE STATION IS LOCATED IN CENTRAL HARFORD COUNTY, MARYLAND ABOUT 2
 JV7301'MILES EAST OF BEL AIR.
 JV7301'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 24 AND
 JV7301'STATE HIGHWAY 22 PROCEED NORTHEAST ALONG HIGHWAY 22 2.7 MILES TO ITS
 JV7301'INTERSECTION WITH STATE HIGHWAY 543.  TURN RIGHT AND PROCEED
 JV7301'SOUTHEAST ALONG HIGHWAY 543 1.5 MILES TO THE STATION ON THE LEFT.
 JV7301'THE STATION IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7301'CONCRETE FLUSH WITH THE GROUND STAMPED 30 FOXBOROUGH 2 1993.
 JV7301'THE STATION IS 144.0 FEET NORTHEAST FROM POWER POLE NUMBER 94698, 30.0
 JV7301'FEET NORTHEAST FROM THE CENTERLINE OF STATE HIGHWAY 543, 115.0 FEET
 JV7301'NORTH FROM POWER POLE NUMBER 94699, AND 5.5 FEET SOUTHWEST FROM A
 JV7301'WHITE BOARD FENCE.
 JV7301
 JV7301                          STATION RECOVERY (2002)
 JV7301
 JV7301'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (DMM)
 JV7301'NEW RECOVERY,TO REACH DIRECTIONS AS DESCRIBED,NEW STATION RECOVERY,
 JV7301'STATION IS 119.4 FT. S/E FROM POLE 94698,C/P 36, 81.2 FT. EAST FROM A
 JV7301'FIRE HYD., 118.3 FT. EAST FROM STREET SIGN, 12.5 FT. EAST FROM EAST
 JV7301'CURBLINE, 5.4 FT. S/W FROM A WHITE BOARD FENCE.  THE STATION IS GPS
 JV7301'OBSERVABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6759 ***********************************************************************
 JV6759  DESIGNATION -  FOXBOROUGH AZ MK
 JV6759  PID         -  JV6759
 JV6759  STATE/COUNTY-  MD/HARFORD
 JV6759  COUNTRY     -  US
 JV6759  USGS QUAD   -  BEL AIR (2016)
 JV6759
 JV6759                         *CURRENT SURVEY CONTROL
 JV6759  ______________________________________________________________________
 JV6759* NAD 83(2011) POSITION- 39 31 44.33035(N) 076 17 32.77414(W)   ADJUSTED
 JV6759* NAD 83(2011) ELLIP HT-    86.163 (meters)        (06/27/12)   ADJUSTED
 JV6759* NAD 83(2011) EPOCH   -  2010.00
 JV6759* NAVD 88 ORTHO HEIGHT -   119.1   (meters)      391.    (feet) GPS OBS
 JV6759  ______________________________________________________________________
 JV6759  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6759  GEOID HEIGHT    -        -33.180 (meters)                     GEOID93
 JV6759  GEOID HEIGHT    -        -32.898 (meters)                     GEOID18
 JV6759  NAD 83(2011) X  -  1,167,349.742 (meters)                     COMP
 JV6759  NAD 83(2011) Y  - -4,785,915.605 (meters)                     COMP
 JV6759  NAD 83(2011) Z  -  4,037,840.610 (meters)                     COMP
 JV6759  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 JV6759
 JV6759  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6759  Standards:
 JV6759         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6759            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6759  -------------------------------------------------------------------
 JV6759  NETWORK    1.02   1.96           0.46   0.35   1.00      0.31285572
 JV6759  -------------------------------------------------------------------
 JV6759  Click here for local accuracies and other accuracy information.
 JV6759
 JV6759.The horizontal coordinates were established by GPS observations
 JV6759.and adjusted by the National Geodetic Survey in June 2012.
 JV6759
 JV6759.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6759.been affixed to the stable North American tectonic plate. See 
 JV6759.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6759
 JV6759.The horizontal coordinates are valid at the epoch date displayed above
 JV6759.which is a decimal equivalence of Year/Month/Day.
 JV6759
 JV6759.The orthometric height was determined by GPS observations and a
 JV6759.high-resolution geoid model.
 JV6759
 JV6759.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6759.GEOID18 height accuracy estimate available here.
 JV6759
 JV6759.Click photographs - Photos may exist for this station.
 JV6759
 JV6759.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6759
 JV6759.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6759
 JV6759.The ellipsoidal height was determined by GPS observations
 JV6759.and is referenced to NAD 83.
 JV6759
 JV6759. The following values were computed from the NAD 83(2011) position.
 JV6759
 JV6759;                    North         East     Units Scale Factor Converg.
 JV6759;SPC MD       -   206,968.297   460,834.898   MT  1.00001477   +0 26 38.7
 JV6759;SPC MD       -   679,028.49  1,511,922.49   sFT  1.00001477   +0 26 38.7
 JV6759;UTM  18      - 4,376,278.256   388,921.871   MT  0.99975191   -0 49 21.6
 JV6759
 JV6759!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6759!SPC MD       -   0.99998648  x   1.00001477  =   1.00000125
 JV6759!UTM  18      -   0.99998648  x   0.99975191  =   0.99973840
 JV6759
 JV6759_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8892176278(NAD 83)
 JV6759
 JV6759|---------------------------------------------------------------------|
 JV6759| PID    Reference Object                     Distance      Geod. Az  |
 JV6759|                                                           dddmmss.s |
 JV6759| JV7301 FOXBOROUGH 2                        390.254 METERS 31318     |
 JV6759| JV6758 FOXBOROUGH                          390.564 METERS 31318     |
 JV6759|---------------------------------------------------------------------|
 JV6759
 JV6759                          SUPERSEDED SURVEY CONTROL
 JV6759
 JV6759  NAD 83(2007)-  39 31 44.33048(N)    076 17 32.77486(W) AD(2002.00) 0
 JV6759  ELLIP H (02/10/07)   86.181  (m)                       GP(2002.00)    
 JV6759  ELLIP H (08/30/02)   86.183  (m)                       GP(       ) 4 2
 JV6759  NAD 83(1991)-  39 31 44.32998(N)    076 17 32.77496(W) AD(       ) 1
 JV6759  ELLIP H (01/27/92)   86.147  (m)                       GP(       ) 4 1
 JV6759  NAD 83(1986)-  39 31 44.32367(N)    076 17 32.78218(W) AD(       ) 1
 JV6759  NGVD 29 (06/18/91)  119.3    (m)  UNKNOWN  model used  GPS OBS        
 JV6759
 JV6759.Superseded values are not recommended for survey control.
 JV6759
 JV6759.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6759.See file dsdata.pdf to determine how the superseded data were derived.
 JV6759
 JV6759_MARKER: DZ = AZIMUTH MARK DISK
 JV6759_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6759_STAMPING: 30 FOXBOROUGH 1989
 JV6759_MARK LOGO: MD-025
 JV6759_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6759_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6759+STABILITY: SURFACE MOTION
 JV6759_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6759+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2002
 JV6759
 JV6759  HISTORY     - Date     Condition        Report By
 JV6759  HISTORY     - 1989     MONUMENTED       RDA
 JV6759  HISTORY     - 19931209 GOOD             GEOMET
 JV6759  HISTORY     - 20020720 GOOD             DMW
 JV6759
 JV6759                          STATION DESCRIPTION
 JV6759
 JV6759'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6759'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTH ALONG HIGHWAY
 JV6759'543 0.24 MILE TO THE MARK ON THE LEFT.
 JV6759'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6759'ABOUT 1 INCH BELOW GROUND STAMPED 30 FOXBOROUGH 1989.  THE MARK IS
 JV6759'18.4 FEET SOUTHEAST OF C AND P OF MARYLAND TELEPHONE POLE NUMBER 39,
 JV6759'29.8 EAST OF THE CENTERLINE OF HIGHWAY 543, 223.6 FEET NORTH OF C AND
 JV6759'P TELEPHONE POLE NUMBER 40 AND 1281.39 FEET FROM THE STATION.
 JV6759
 JV6759                          STATION RECOVERY (1993)
 JV6759
 JV6759'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6759'RECOVERED IN GOOD CONDITION.
 JV6759
 JV6759                          STATION RECOVERY (2002)
 JV6759
 JV6759'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (DMM)
 JV6759'NEW RECOVERY,TO REACH STATION AS DESCRIBED,THE STATION IS LOCATED
 JV6759'136.3 FT. S/E FROM A STREET SIGN (WINDWOOD RD.), 73.6 FT. N/E FROM
 JV6759'POLE C/P 44,BGE 263180, 54.3 FT. SOUTH FROM POLE BGE 551174, 12.4 FT.
 JV6759'EAST FROM EAST CURBLINE, 5.4 FT. WEST FROM A WHITE BOARD FENCE.
 JV6759'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6823 ***********************************************************************
 HV6823  DESIGNATION -  FOXWELL MSFC 1908
 HV6823  PID         -  HV6823
 HV6823  STATE/COUNTY-  MD/ST MARYS
 HV6823  COUNTRY     -  US
 HV6823  USGS QUAD   -  LEONARDTOWN (2016)
 HV6823
 HV6823                         *CURRENT SURVEY CONTROL
 HV6823  ______________________________________________________________________
 HV6823* NAD 83(1993) POSITION- 38 17 01.54273(N) 076 37 49.14577(W)   ADJUSTED
 HV6823* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6823  ______________________________________________________________________
 HV6823  GEOID HEIGHT    -        -33.910 (meters)                     GEOID18
 HV6823  LAPLACE CORR    -         -5.20  (seconds)                    DEFLEC18
 HV6823  HORZ ORDER      -  THIRD
 HV6823
 HV6823.The horizontal coordinates were established by classical geodetic methods
 HV6823.and adjusted by the National Geodetic Survey in November 1994.
 HV6823
 HV6823.The orthometric height was scaled from a topographic map.
 HV6823
 HV6823.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6823.GEOID18 height accuracy estimate available here.
 HV6823
 HV6823.Click photographs - Photos may exist for this station.
 HV6823
 HV6823.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6823
 HV6823. The following values were computed from the NAD 83(1993) position.
 HV6823
 HV6823;                    North         East     Units Scale Factor Converg.
 HV6823;SPC MD       -    68,565.878   432,344.546   MT  1.00000286   +0 13 55.3
 HV6823;SPC MD       -   224,953.22  1,418,450.40   sFT  1.00000286   +0 13 55.3
 HV6823;UTM  18      - 4,238,556.800   357,411.200   MT  0.99985040   -1 00 36.9
 HV6823
 HV6823!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6823!SPC MD       -   1.00000506  x   1.00000286  =   1.00000792
 HV6823!UTM  18      -   1.00000506  x   0.99985040  =   0.99985546
 HV6823
 HV6823_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5741138556(NAD 83)
 HV6823
 HV6823                          SUPERSEDED SURVEY CONTROL
 HV6823
 HV6823  NAD 83(1991)-  38 17 01.54195(N)    076 37 49.15062(W) AD(       ) 3
 HV6823  NAD 83(1986)-  38 17 01.54267(N)    076 37 49.16234(W) AD(       ) 3
 HV6823  NAD 27      -  38 17 01.06700(N)    076 37 50.28100(W) AD(       ) 3
 HV6823  USSD        -  38 17 01.68700(N)    076 37 50.14600(W) AD(       ) 3
 HV6823
 HV6823.Superseded values are not recommended for survey control.
 HV6823
 HV6823.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6823.See file dsdata.pdf to determine how the superseded data were derived.
 HV6823
 HV6823_MARKER: H = DRILL HOLE
 HV6823_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6823_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6823+STABILITY: SURFACE MOTION
 HV6823
 HV6823  HISTORY     - Date     Condition        Report By
 HV6823  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6823  HISTORY     - 1946     GOOD             CGS
 HV6823  HISTORY     - 1958     GOOD             CGS
 HV6823
 HV6823                          STATION DESCRIPTION
 HV6823
 HV6823'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6823'STATION IS ON NORTHEASTERN SHORE OF UPPER BRETONS BAY, ABOUT 1/2
 HV6823'MILE ESE OF LEONARDTOWN WHARF, AND 1-1/4 MILES N OF ENTRANCE TO
 HV6823'MOULDY CREEK, ABOUT 6 FEET ABOVE HIGH WATER, 12 YARDS NW OF SHORE,
 HV6823'2 YARDS FROM A 3-FOOT BANK, 12 YARDS S OF AN ORCHARD, AND 25 YARDS
 HV6823'E OF A HOUSE.
 HV6823'
 HV6823'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6823'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6823'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6823'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6823'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6823'AS FOLLOWS--E GABLE OF DUKE HOUSE, 1/2 MILE, S 49 DEG 10 MIN W.
 HV6823'NAIL IN BLAZE IN PAULOWNIA STUMP, 8.50 METERS (27.89 FEET), S 64
 HV6823'DEG 42 MIN W.  E GABLE OF FOXWELL HOUSE, 25 YARDS, S 84 DEG 6
 HV6823'MIN W.  SE CHIMNEY OF KEY HOUSE, 1/2 MILE, N 34 DEG 12 MIN W.
 HV6823'CHIMNEY OF SMALL HOUSE, 1/4 MILE, N 5 DEG 32 MIN W.  S CHIMNEY OF
 HV6823'LARGE 2-STORY HOUSE, 1/2 MILE, N 32 DEG 25 MIN E. NAIL IN BLAZE IN
 HV6823'5-INCH PAULOWNIA TREE, 4.42 METERS (14.50 FEET), N 74 DEG 59 MIN
 HV6823'E.  SPIKE IN OLD WHARF PILE ABOUT 6 INCHES ABOVE GROUND, 15.00
 HV6823'METERS (49.2 FEET), S 69 DEG 30 MIN E.
 HV6823
 HV6823                          STATION RECOVERY (1946)
 HV6823
 HV6823'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1946 (ROW)
 HV6823'FOUND A MARYLAND SHELLFISH COMMISSION CONCRETE MONUMENT WITH SMALL
 HV6823'HOLE IN CENTER AND LETTERS MSFC AND USCS IN THE TOP, PROJECTING
 HV6823'ABOUT 2 INCHES ABOVE THE GROUND.  LOCATED ABOUT 5 FEET EAST OF A
 HV6823'LARGE TREE, IN LINE WITH AND ABOUT 75 FEET WEST OF A SIMILAR TREE,
 HV6823'ABOUT 6 FEET SOUTH OF THE DRIVE TO THE HOME OF MR. STEVENS, WHICH
 HV6823'IS PROBABLY THE HOUSE MENTIONED IN THE ORIGINAL DESCRIPTION AS
 HV6823'BEING 25 YARDS FROM THE STATION.  THERE IS AN ARTESIAN WELL
 HV6823'(FLOWING ABOUT 10 GALS. PER MINUTE) SOUTHWEST OF THE STATION.
 HV6823'
 HV6823'TO REACH FROM LEONARDTOWN GO EAST ON THE ROAD TO CEDAR POINT ABOUT
 HV6823'0.6 MILE, TURN RIGHT TOWARD CAMP CALVERT, CONTINUE PAST THE CAMP
 HV6823'AND DOWN THE HILL TO BRETON BAY AND THE STATION ON THE LEFT.
 HV6823
 HV6823                          STATION RECOVERY (1958)
 HV6823
 HV6823'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6823'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE RECOVERY NOTE BY
 HV6823'R.O.W. AND C.N.C. IN 1946 IS ADEQUATE WITH THE FOLLOWING ADDITIONS--
 HV6823'
 HV6823'THE STATION IS 65.2 FEET NORTHEAST OF A PIER AND 16.5 FEET NORTH
 HV6823'OF A THREE-FOOT BANK.  THE MONUMENT PROJECTS 1 INCH ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5825 ***********************************************************************
 JV5825  DESIGNATION -  FRANCES
 JV5825  PID         -  JV5825
 JV5825  STATE/COUNTY-  MD/BALTIMORE
 JV5825  COUNTRY     -  US
 JV5825  USGS QUAD   -  RELAY (2016)
 JV5825
 JV5825                         *CURRENT SURVEY CONTROL
 JV5825  ______________________________________________________________________
 JV5825* NAD 83(1991) POSITION- 39 14 14.42191(N) 076 42 58.59741(W)   ADJUSTED
 JV5825* NAVD 88 ORTHO HEIGHT -   112.    (meters)      367.    (feet) SCALED
 JV5825  ______________________________________________________________________
 JV5825  GEOID HEIGHT    -        -32.484 (meters)                     GEOID18
 JV5825  LAPLACE CORR    -         -6.55  (seconds)                    DEFLEC18
 JV5825  HORZ ORDER      -  SECOND
 JV5825
 JV5825.The horizontal coordinates were established by classical geodetic methods
 JV5825.and adjusted by the National Geodetic Survey in January 1992.
 JV5825
 JV5825.The orthometric height was scaled from a topographic map.
 JV5825
 JV5825.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5825.GEOID18 height accuracy estimate available here.
 JV5825
 JV5825.Click photographs - Photos may exist for this station.
 JV5825
 JV5825.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5825
 JV5825. The following values were computed from the NAD 83(1991) position.
 JV5825
 JV5825;                    North         East     Units Scale Factor Converg.
 JV5825;SPC MD       -   174,392.094   424,494.795   MT  0.99996971   +0 10 41.1
 JV5825;SPC MD       -   572,151.40  1,392,696.67   sFT  0.99996971   +0 10 41.1
 JV5825;UTM  18      - 4,344,518.426   351,877.858   MT  0.99987015   -1 05 08.9
 JV5825
 JV5825!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5825!SPC MD       -   0.99998756  x   0.99996971  =   0.99995727
 JV5825!UTM  18      -   0.99998756  x   0.99987015  =   0.99985771
 JV5825
 JV5825:                Primary Azimuth Mark                     Grid Az
 JV5825:SPC MD       -  ZIMMER                                   190 25 07.2
 JV5825:UTM  18      -  ZIMMER                                   191 40 57.2
 JV5825
 JV5825_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5187744518(NAD 83)
 JV5825
 JV5825|---------------------------------------------------------------------|
 JV5825| PID    Reference Object                     Distance      Geod. Az  |
 JV5825|                                                           dddmmss.s |
 JV5825| JV5827 MANNING                             262.821 METERS 01806     |
 JV5825| CA9441 FRANCES RM 1                         25.811 METERS 06617     |
 JV5825| JV5712 LIVINGSTON STACK                    APPROX.12.0 KM 0944615.0 |
 JV5825| JV0621 ZIMMER                              APPROX. 3.7 KM 1903548.3 |
 JV5825| CA9442 FRANCES RM 2                         25.478 METERS 21418     |
 JV5825| JV5837 BALTIMORE GAS HOWARD CO MAST        APPROX. 5.6 KM 2624423.8 |
 JV5825| JV5622 CATONSVILLE SPR GROVE HOSP STK      APPROX. 3.1 KM 3441820.0 |
 JV5825| JV5621 CATONSVILLE SPRING GRO HOSP TK      APPROX. 3.2 KM 3443017.7 |
 JV5825| JV5619 CATONSVILLE BALTIMORE MUN TANK      APPROX. 5.7 KM 3445213.4 |
 JV5825|---------------------------------------------------------------------|
 JV5825
 JV5825                          SUPERSEDED SURVEY CONTROL
 JV5825
 JV5825  NAD 83(1986)-  39 14 14.41919(N)    076 42 58.60634(W) AD(       ) 2
 JV5825  NAD 27      -  39 14 14.03500(N)    076 42 59.71300(W) AD(       ) 2
 JV5825
 JV5825.Superseded values are not recommended for survey control.
 JV5825
 JV5825.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5825.See file dsdata.pdf to determine how the superseded data were derived.
 JV5825
 JV5825_MARKER: DS = TRIANGULATION STATION DISK
 JV5825_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5825_STAMPING: FRANCES 1957
 JV5825_MARK LOGO: CGS
 JV5825_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5825+STABILITY: SURFACE MOTION
 JV5825
 JV5825  HISTORY     - Date     Condition        Report By
 JV5825  HISTORY     - 1957     MONUMENTED       CGS
 JV5825  HISTORY     - 1958     SEE DESCRIPTION  CGS
 JV5825
 JV5825                          STATION DESCRIPTION
 JV5825
 JV5825'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5825'STATION IS LOCATED ON A HIGH HILL ABOUT 6-1/2 MILES SOUTHWEST OF
 JV5825'BALTIMORE AND ABOUT 1 MILE NORTH OF RELAY ON PROPERTY OF
 JV5825'ST. FRANCES CONVENT.  STATION IS 13 FEET SOUTH OF LARGE HOLLOW
 JV5825'STUMP AND AT THE NORTHWEST EDGE OF CLEARING.  THE MARK PROJECTS
 JV5825'ABOUT 4 INCHES AND THE DISK IS STAMPED FRANCES 1957.
 JV5825'
 JV5825'REFERENCE MARK NO. 1 PROJECTS ABOUT 4 INCHES AND THE DISK IS
 JV5825'STAMPED FRANCES NO 1 1957.
 JV5825'
 JV5825'REFERENCE MARK NO. 2 PROJECTS ABOUT 4 INCHES AND THE DISK IS
 JV5825'STAMPED FRANCES NO 2 1957.
 JV5825'
 JV5825'A TRAVERSE CONNECTION WAS MADE TO STATION MANNING 1933 WHICH IS
 JV5825'60 FEET SOUTHEAST OF FENCE AND 60 FEET NORTH OF A CEDAR TREE.  THE
 JV5825'MARK IS ABOUT 6 INCHES BELOW THE SURFACE AND THE DISK IS STAMPED
 JV5825'MANNING 1933.
 JV5825'
 JV5825'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 1 AND STATE
 JV5825'HIGHWAY 166 AT THE SOUTH EDGE OF RELAY GO WEST ON STATE HIGHWAY
 JV5825'166 FOR 0.45 MILE TO A T INTERSECTION.  TURN RIGHT AND CONTINUE
 JV5825'ON STATE HIGHWAY 166 FOR 0.15 MILE TO SCHOOL ON LEFT.  KEEP LEFT
 JV5825'ON STATE HIGHWAY 166 FOR 1.1 MILES TO CROSSROADS.  TURN LEFT UP
 JV5825'HILL ON GUN ROAD FOR 0.2 MILE TO IRON GATE ON LEFT.  PASS
 JV5825'THROUGH GATE AND FOLLOW ROAD 0.1 MILE.  TURN RIGHT OFF ROAD AND
 JV5825'GO 0.05 MILE UP HILL TO HIGHEST POINT AND STATION AS
 JV5825'DESCRIBED.
 JV5825'
 JV5825'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5825
 JV5825                          STATION RECOVERY (1958)
 JV5825
 JV5825'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5825'STATION WAS DESTROYED BY REQUEST OF PROPERTY OWNER TO MAKE WAY
 JV5825'FOR THE CONSTRUCTION OF A NEW HOME WHICH IS NOW UNDER CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5722 ***********************************************************************
 HV5722  DESIGNATION -  FRANK
 HV5722  PID         -  HV5722
 HV5722  STATE/COUNTY-  MD/TALBOT
 HV5722  COUNTRY     -  US
 HV5722  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5722
 HV5722                         *CURRENT SURVEY CONTROL
 HV5722  ______________________________________________________________________
 HV5722* NAD 83(1991) POSITION- 38 50 33.95174(N) 076 11 52.15569(W)   ADJUSTED
 HV5722* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5722  ______________________________________________________________________
 HV5722  GEOID HEIGHT    -        -34.258 (meters)                     GEOID18
 HV5722  LAPLACE CORR    -         -4.58  (seconds)                    DEFLEC18
 HV5722  HORZ ORDER      -  THIRD
 HV5722
 HV5722.The horizontal coordinates were established by classical geodetic methods
 HV5722.and adjusted by the National Geodetic Survey in January 1992.
 HV5722
 HV5722.The orthometric height was scaled from a topographic map.
 HV5722
 HV5722.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5722.GEOID18 height accuracy estimate available here.
 HV5722
 HV5722.Click photographs - Photos may exist for this station.
 HV5722
 HV5722.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5722
 HV5722. The following values were computed from the NAD 83(1991) position.
 HV5722
 HV5722;                    North         East     Units Scale Factor Converg.
 HV5722;SPC MD       -   130,857.691   469,639.039   MT  0.99995001   +0 30 12.5
 HV5722;SPC MD       -   429,322.27  1,540,807.41   sFT  0.99995001   +0 30 12.5
 HV5722;UTM  18      - 4,300,009.772   396,047.773   MT  0.99973306   -0 45 04.8
 HV5722
 HV5722!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5722!SPC MD       -   1.00000541  x   0.99995001  =   0.99995542
 HV5722!UTM  18      -   1.00000541  x   0.99973306  =   0.99973847
 HV5722
 HV5722:                Primary Azimuth Mark                     Grid Az
 HV5722:SPC MD       -  HERR                                     239 01 50.7
 HV5722:UTM  18      -  HERR                                     240 17 08.0
 HV5722
 HV5722_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9604700009(NAD 83)
 HV5722
 HV5722|---------------------------------------------------------------------|
 HV5722| PID    Reference Object                     Distance      Geod. Az  |
 HV5722|                                                           dddmmss.s |
 HV5722| HV5683 JAMES                               395.396 METERS 00318     |
 HV5722| CX2781 FRANK RM                             25.510 METERS 09213     |
 HV5722| HV5686 WOOD                                460.058 METERS 1670531.2 |
 HV5722| HV5708 HERR                                APPROX. 1.6 KM 2393203.2 |
 HV5722|---------------------------------------------------------------------|
 HV5722
 HV5722                          SUPERSEDED SURVEY CONTROL
 HV5722
 HV5722  NAD 83(1986)-  38 50 33.94732(N)    076 11 52.16909(W) AD(       ) 3
 HV5722  NAD 27      -  38 50 33.50700(N)    076 11 53.36000(W) AD(       ) 3
 HV5722  USSD        -  38 50 33.89400(N)    076 11 53.13500(W) AD(       ) 3
 HV5722
 HV5722.Superseded values are not recommended for survey control.
 HV5722
 HV5722.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5722.See file dsdata.pdf to determine how the superseded data were derived.
 HV5722
 HV5722_MARKER: K = CLAY TILE PIPE
 HV5722_SETTING: 0 = UNSPECIFIED SETTING
 HV5722
 HV5722  HISTORY     - Date     Condition        Report By
 HV5722  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5722  HISTORY     - 1940     SEE DESCRIPTION  CGS
 HV5722
 HV5722                          STATION DESCRIPTION
 HV5722
 HV5722'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5722'STATION IS ON THE EASTERN SHORE OF MILES RIVER, ABOUT 1/2 MILE S
 HV5722'OF ENTRANCE TO WYE RIVER AND 1 MILE NE OF HERRING ISLAND, IN A
 HV5722'CULTIVATED FIELD, ABOUT 18 FEET ABOVE HIGH WATER, 8 YARDS E OF A
 HV5722'BLUFF WASHED BY HIGH WATER, AND 125 YARDS S OF A DITCH.  STATION
 HV5722'MARK IS CENTER OF A 2-INCH TILE PIPE PROJECTING 2 INCHES ABOVE
 HV5722'SURFACE OF GROUND.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE
 HV5722'PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HV5722'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV5722'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV5722'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV5722'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV5722'IS 25.51 METERS (83.7 FEET), FROM STATION S 88 DEG 47 MIN E.
 HV5722'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV5722'FOLLOWS--E GABLE OF BARN, 3 MILES, S 46 DEG 38 MIN W.  S CHIMNEY
 HV5722'OF HOUSE ON TILGHMANS POINT FARM, 3-1/2 MILES, N 75 DEG 31 MIN W.
 HV5722'RIGHT TANGENT OF TILGHMANS POINT, 3-1/4 MILES, N 63 DEG 33 MIN W.
 HV5722'S GABLE OF SMALL HOUSE, 1-1/4 MILES, N 7 DEG 33 MIN W.  CUPOLA ON
 HV5722'BARN, 3/8 MILE, S 83 DEG 49 MIN E.  E CHIMNEY OF HOUSE, 1-1/8
 HV5722'MILES, S 37 DEG 2 MIN E.
 HV5722
 HV5722                          STATION RECOVERY (1940)
 HV5722
 HV5722'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5722'STATION FOUND LYING WASHED OUT ON SHORE.  BANK AT THIS POSITION
 HV5722'SHOWS A CONSIDERABLE AMOUNT OF EROSION.
 HV5722'
 HV5722'IT IS RECOMMENDED THAT THIS STATION BE REPORTED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8010 ***********************************************************************
 AJ8010  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8010  DESIGNATION -  FRANK
 AJ8010  PID         -  AJ8010
 AJ8010  STATE/COUNTY-  MD/MONTGOMERY
 AJ8010  COUNTRY     -  US
 AJ8010  USGS QUAD   -  GAITHERSBURG (2016)
 AJ8010
 AJ8010                         *CURRENT SURVEY CONTROL
 AJ8010  ______________________________________________________________________
 AJ8010* NAD 83(2011) POSITION- 39 11 42.62063(N) 077 14 34.24264(W)   ADJUSTED
 AJ8010* NAD 83(2011) ELLIP HT-   141.536 (meters)        (06/27/12)   ADJUSTED
 AJ8010* NAD 83(2011) EPOCH   -  2010.00
 AJ8010* NAVD 88 ORTHO HEIGHT -   173.3   (meters)      569.    (feet) GPS OBS
 AJ8010  ______________________________________________________________________
 AJ8010  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8010  GEOID HEIGHT    -        -31.801 (meters)                     GEOID99
 AJ8010  GEOID HEIGHT    -        -31.816 (meters)                     GEOID18
 AJ8010  NAD 83(2011) X  -  1,093,004.963 (meters)                     COMP
 AJ8010  NAD 83(2011) Y  - -4,827,586.205 (meters)                     COMP
 AJ8010  NAD 83(2011) Z  -  4,009,222.038 (meters)                     COMP
 AJ8010  LAPLACE CORR    -          2.27  (seconds)                    DEFLEC18
 AJ8010
 AJ8010  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8010  Standards:
 AJ8010         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8010            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8010  -------------------------------------------------------------------
 AJ8010  NETWORK    0.64   1.37           0.28   0.24   0.70     -0.00000898
 AJ8010  -------------------------------------------------------------------
 AJ8010  Click here for local accuracies and other accuracy information.
 AJ8010
 AJ8010.The horizontal coordinates were established by GPS observations
 AJ8010.and adjusted by the National Geodetic Survey in June 2012.
 AJ8010
 AJ8010.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8010.been affixed to the stable North American tectonic plate. See 
 AJ8010.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8010
 AJ8010.The horizontal coordinates are valid at the epoch date displayed above
 AJ8010.which is a decimal equivalence of Year/Month/Day.
 AJ8010
 AJ8010.The orthometric height was determined by GPS observations and a
 AJ8010.high-resolution geoid model.
 AJ8010
 AJ8010.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8010.GEOID18 height accuracy estimate available here.
 AJ8010
 AJ8010.Click photographs - Photos may exist for this station.
 AJ8010
 AJ8010.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8010
 AJ8010.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8010
 AJ8010.The ellipsoidal height was determined by GPS observations
 AJ8010.and is referenced to NAD 83.
 AJ8010
 AJ8010. The following values were computed from the NAD 83(2011) position.
 AJ8010
 AJ8010;                    North         East     Units Scale Factor Converg.
 AJ8010;SPC MD       -   169,700.718   379,021.863   MT  0.99996534   -0 09 08.7
 AJ8010;SPC MD       -   556,759.77  1,243,507.56   sFT  0.99996534   -0 09 08.7
 AJ8010;UTM  18      - 4,340,831.858   306,312.720   MT  1.00006194   -1 25 04.2
 AJ8010
 AJ8010!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8010!SPC MD       -   0.99997779  x   0.99996534  =   0.99994314
 AJ8010!UTM  18      -   0.99997779  x   1.00006194  =   1.00003973
 AJ8010
 AJ8010_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0631240831(NAD 83)
 AJ8010
 AJ8010                          SUPERSEDED SURVEY CONTROL
 AJ8010
 AJ8010  NAD 83(2007)-  39 11 42.62022(N)    077 14 34.24296(W) AD(2002.00) 0
 AJ8010  ELLIP H (02/10/07)  141.565  (m)                       GP(2002.00)    
 AJ8010  NAD 83(1991)-  39 11 42.62123(N)    077 14 34.24371(W) AD(       ) A
 AJ8010  ELLIP H (02/12/02)  141.547  (m)                       GP(       ) 4 1
 AJ8010
 AJ8010.Superseded values are not recommended for survey control.
 AJ8010
 AJ8010.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8010.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8010
 AJ8010_MARKER: DD = SURVEY DISK
 AJ8010_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8010_STAMPING: FRANK 2000
 AJ8010_MARK LOGO: MDSHA
 AJ8010_PROJECTION: FLUSH
 AJ8010_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8010_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8010+STABILITY: SURFACE MOTION
 AJ8010_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8010+SATELLITE: SATELLITE OBSERVATIONS - August 03, 2017
 AJ8010
 AJ8010  HISTORY     - Date     Condition        Report By
 AJ8010  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ8010  HISTORY     - 20040324 GOOD             URS
 AJ8010  HISTORY     - 20050405 GOOD             USPSQD
 AJ8010  HISTORY     - 20100115 GOOD             NGS
 AJ8010  HISTORY     - 20170803 GOOD             NGS
 AJ8010
 AJ8010                          STATION DESCRIPTION
 AJ8010
 AJ8010'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8010'THE STATION IS LOCATED ABOUT 2.5 MILES (4.0 KM) NORTHEAST OF
 AJ8010'GERMANTOWN, 9.0 MILES (14.5 KM) NORTHWEST OF ROCKVILLE, AND 13.1 MILES
 AJ8010'(21.1 KM) SOUTHWEST OF MOUNT AIRY.  TO REACH THE STATION FROM THE
 AJ8010'INTERSECTION OF STATE HIGHWAY 355 AND STATE HIGHWAY 27 IN THE
 AJ8010'NORTHEAST SECTION OF GERMANTOWN, GO SOUTHEAST ALONG STATE HIGHWAY 355
 AJ8010'FOR 0.7 MILES (1.1 KM) TO NEELSVILLE CHURCH ROAD LEADING NORTHEAST.
 AJ8010'TURN LEFT AND GO NORTHEAST ALONG NEELSVILLE CHURCH ROAD FOR 0.1 MILES
 AJ8010'(0.2 KM) TO THE THIRD SET OF CONCRETE DROP INLETS AND THE STATION ON
 AJ8010'THE LEFT.  THE STATION IS A MARYLAND STATE HIGHWAY SURVEY DISK SET IN
 AJ8010'THE TOP OF A 12 INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 AJ8010'GROUND.  IT IS 20.1 FEET (6.1 M) NORTHWEST OF THE CENTERLINE OF THE
 AJ8010'ROAD, 9.5 FEET (2.9 M) NORTH OF THE CENTER OF A 24 INCH METAL STORM
 AJ8010'DRAIN DROP INLET COVER, 55.5 FEET (16.9 M) NORTH-NORTHEAST OF A METAL
 AJ8010'LIGHT POLE LOCATED ACROSS THE ROAD, 134.2 FEET (40.9 M) SOUTHWEST OF
 AJ8010'THE SOUTHWEST CORNER OF THE HUTCHINSON HEADSTONE, 4.0 FEET (1.2 M)
 AJ8010'NORTHWEST OF A CARSONITE WITNESS POST AND ABOUT 0.5 FEET (15.2 CM)
 AJ8010'HIGHER THAN THE ROAD SURFACE.
 AJ8010
 AJ8010                          STATION RECOVERY (2004)
 AJ8010
 AJ8010'RECOVERY NOTE BY URS COMPANY 2004
 AJ8010'RECOVERED IN GOOD CONDITION.
 AJ8010
 AJ8010                          STATION RECOVERY (2005)
 AJ8010
 AJ8010'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 AJ8010'RECOVERED IN GOOD CONDITION.
 AJ8010
 AJ8010                          STATION RECOVERY (2010)
 AJ8010
 AJ8010'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 AJ8010'RECOVERED IN GOOD CONDITION.
 AJ8010
 AJ8010                          STATION RECOVERY (2017)
 AJ8010
 AJ8010'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 AJ8010'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1305 ***********************************************************************
 JV1305  DESIGNATION -  FRANKLIN
 JV1305  PID         -  JV1305
 JV1305  STATE/COUNTY-  MD/BALTIMORE
 JV1305  COUNTRY     -  US
 JV1305  USGS QUAD   -  BALTIMORE WEST (2016)
 JV1305
 JV1305                         *CURRENT SURVEY CONTROL
 JV1305  ______________________________________________________________________
 JV1305* NAD 83(1986) POSITION- 39 18 15.     (N) 076 42 44.     (W)   SCALED
 JV1305* NAVD 88 ORTHO HEIGHT -    92.173 (meters)      302.40  (feet) ADJUSTED
 JV1305  ______________________________________________________________________
 JV1305  GEOID HEIGHT    -        -32.377 (meters)                     GEOID18
 JV1305  DYNAMIC HEIGHT  -         92.125 (meters)      302.25  (feet) COMP
 JV1305  MODELED GRAVITY -    980,106.4   (mgal)                       NAVD 88
 JV1305
 JV1305  VERT ORDER      -  FIRST     CLASS II
 JV1305
 JV1305.The horizontal coordinates were scaled from a map and have
 JV1305.an estimated accuracy of +/- 6 seconds.
 JV1305
 JV1305.The orthometric height was determined by differential leveling and
 JV1305.adjusted by the NATIONAL GEODETIC SURVEY
 JV1305.in June 1991.
 JV1305
 JV1305.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1305.GEOID18 height accuracy estimate available here.
 JV1305
 JV1305.Click photographs - Photos may exist for this station.
 JV1305
 JV1305.The dynamic height is computed by dividing the NAVD 88
 JV1305.geopotential number by the normal gravity value computed on the
 JV1305.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1305.degrees latitude (g = 980.6199 gals.).
 JV1305
 JV1305.The modeled gravity was interpolated from observed gravity values.
 JV1305
 JV1305;                    North         East    Units  Estimated Accuracy
 JV1305;SPC MD       -   181,810.      424,820.      MT  (+/- 180 meters Scaled)
 JV1305
 JV1305_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ523519(NAD 83)
 JV1305
 JV1305                          SUPERSEDED SURVEY CONTROL
 JV1305
 JV1305  NGVD 29 (11/26/84)   92.397  (m)          303.14   (f) ADJUSTED    1 2
 JV1305
 JV1305.Superseded values are not recommended for survey control.
 JV1305
 JV1305.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1305.See file dsdata.pdf to determine how the superseded data were derived.
 JV1305
 JV1305_MARKER: DD = SURVEY DISK
 JV1305_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1305_SP_SET: MEDIAN
 JV1305_STAMPING: FRANKLIN 1965
 JV1305_MARK LOGO: MDBCSM
 JV1305_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1305
 JV1305  HISTORY     - Date     Condition        Report By
 JV1305  HISTORY     - 1965     MONUMENTED       MDBCSM
 JV1305  HISTORY     - 20030921 MARK NOT FOUND   USPSQD
 JV1305
 JV1305                          STATION DESCRIPTION
 JV1305
 JV1305'DESCRIBED BY MD BUR SURV AND MAPS 1965
 JV1305'IN BALTIMORE.
 JV1305'STATION IS LOCATED IN FRANKLINTOWN, AT THE JUNCTION OF INGLESDIE
 JV1305'AVE., FOREST PARK AVE. WESTBOUND LANE, 38.2 FT. NE OF A TRAFFIC LIGHT
 JV1305'POLE, 106.9 FT. S OF LIGHT POLE, AND 113.8 FT. S-SW OF THE SE
 JV1305'CORNER OF A BRIDGE.  A STANDARD DISK SET FLUSH IN THE CENTER OF
 JV1305'THE CONCRETE MEDIAN OF INGLESIDE AVENUE, STAMPED FRANKLIN 1965.
 JV1305'TO REACH THE STATION FROM BALTIMORE BELTWAY AND SECURITY BLVD.
 JV1305'INTERCHANGE PROCEED E ALONG SECURITY BLVD. FOR 2.05 MILES TO
 JV1305'THE JUNCTION OF INGLESIDE AVENUE AND THE STATION ON THE LEFT AS
 JV1305'DESCRIBED.
 JV1305
 JV1305                          STATION RECOVERY (2003)
 JV1305
 JV1305'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV1305'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6301 ***********************************************************************
 HV6301  DESIGNATION -  FRANKLIN
 HV6301  PID         -  HV6301
 HV6301  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6301  COUNTRY     -  US
 HV6301  USGS QUAD   -  DEALE OE E (2016)
 HV6301
 HV6301                         *CURRENT SURVEY CONTROL
 HV6301  ______________________________________________________________________
 HV6301* NAD 83(1991) POSITION- 38 48 56.15060(N) 076 29 50.24466(W)   ADJUSTED
 HV6301* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6301  ______________________________________________________________________
 HV6301  GEOID HEIGHT    -        -33.573 (meters)                     GEOID18
 HV6301  LAPLACE CORR    -         -3.73  (seconds)                    DEFLEC18
 HV6301  HORZ ORDER      -  THIRD
 HV6301
 HV6301.The horizontal coordinates were established by classical geodetic methods
 HV6301.and adjusted by the National Geodetic Survey in January 1992.
 HV6301
 HV6301.The orthometric height was scaled from a topographic map.
 HV6301
 HV6301.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6301.GEOID18 height accuracy estimate available here.
 HV6301
 HV6301.Click photographs - Photos may exist for this station.
 HV6301
 HV6301.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6301
 HV6301. The following values were computed from the NAD 83(1991) position.
 HV6301
 HV6301;                    North         East     Units Scale Factor Converg.
 HV6301;SPC MD       -   127,656.212   443,658.367   MT  0.99995040   +0 18 55.9
 HV6301;SPC MD       -   418,818.76  1,455,569.16   sFT  0.99995040   +0 18 55.9
 HV6301;UTM  18      - 4,297,378.345   370,007.951   MT  0.99980808   -0 56 19.2
 HV6301
 HV6301!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6301!SPC MD       -   1.00000531  x   0.99995040  =   0.99995571
 HV6301!UTM  18      -   1.00000531  x   0.99980808  =   0.99981339
 HV6301
 HV6301:                Primary Azimuth Mark                     Grid Az
 HV6301:SPC MD       -  BLOODY POINT BAR LH                      077 19 13.4
 HV6301:UTM  18      -  BLOODY POINT BAR LH                      078 34 28.5
 HV6301
 HV6301_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7000797378(NAD 83)
 HV6301
 HV6301|---------------------------------------------------------------------|
 HV6301| PID    Reference Object                     Distance      Geod. Az  |
 HV6301|                                                           dddmmss.s |
 HV6301| HV6299 BLOODY POINT BAR LH                 APPROX. 9.4 KM 0773809.3 |
 HV6301| CX2782 FRANKLIN RM                           6.360 METERS 29003     |
 HV6301|---------------------------------------------------------------------|
 HV6301
 HV6301                          SUPERSEDED SURVEY CONTROL
 HV6301
 HV6301  NAD 83(1986)-  38 48 56.14777(N)    076 29 50.25707(W) AD(       ) 3
 HV6301  NAD 27      -  38 48 55.72600(N)    076 29 51.41400(W) AD(       ) 3
 HV6301  USSD        -  38 48 56.09600(N)    076 29 51.23400(W) AD(       ) 3
 HV6301
 HV6301.Superseded values are not recommended for survey control.
 HV6301
 HV6301.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6301.See file dsdata.pdf to determine how the superseded data were derived.
 HV6301
 HV6301_MARKER: N = NAIL
 HV6301_SETTING: 0 = UNSPECIFIED SETTING
 HV6301
 HV6301  HISTORY     - Date     Condition        Report By
 HV6301  HISTORY     - 1906     MONUMENTED       MDSFC
 HV6301  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6301  HISTORY     - 20031001 MARK NOT FOUND   USPSQD
 HV6301
 HV6301                          STATION DESCRIPTION
 HV6301
 HV6301'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV6301'STATION IS ON THE WESTERN SHORE OF CHESAPEAKE BAY, ON FRANKLIN
 HV6301'POINT, ABOUT HALFWAY BETWEEN WEST RIVER AND HERRING BAY, ON A
 HV6301'LOW POINT COVERED WITH TUFTS OF MARSH GRASS, SITUATED BETWEEN
 HV6301'THE MARSH AND THE SHORE.  STATION IS JUST AT HIGH-WATER MARK AND
 HV6301'ABOUT 80 YARDS IN FRONT OF THE NE POINT OF A ROUND GROVE OF SMALL
 HV6301'OAK TREES.  CENTER WAS MARKED BY A NAIL IN A PINE STUB FLUSH
 HV6301'WITH THE GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE
 HV6301'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6301'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH
 HV6301'TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HV6301'ARE COUNTER-SUNK IN TOP OF POST.  IT IS 6.36 METERS (20.87
 HV6301'FEET), FROM THE STATION N 69 DEG 57 MIN W.  OTHER
 HV6301'DISTANCES AND BEARINGS ARE AS FOLLOWS--A 12-INCH BLACK OAK
 HV6301'TREE AT SE POINT OF ROUND GROVE OF TREES, 100 YARDS, S 53 DEG 05
 HV6301'MIN W.  A 24-INCH WHITE OAK TREE ABREAST OF STATION, 80 YARDS, S 84
 HV6301'DEG 10 MIN W.  PEAK OF SMALL WHITE SHANTY, 3/4 MILE, N 2 DEG 36
 HV6301'MIN W.  S PEAK OF YELLOW HOUSE BACK OF HORSESHOE POINT, 1
 HV6301'1/2 MILES, N 8 DEG 37 MIN E.
 HV6301
 HV6301                          STATION RECOVERY (1960)
 HV6301
 HV6301'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6301'STATION AND REFERENCE MARK SEARCHED FOR, BUT COULD NOT BE FOUND.
 HV6301'
 HV6301'IT IS POSSIBLE BOTH THESE MARKS WERE DESTROYED DUE TO THE EROSION.
 HV6301
 HV6301                          STATION RECOVERY (2003)
 HV6301
 HV6301'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6301'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7214 ***********************************************************************
 JV7214  HT_MOD      -  This is a Height Modernization Survey Station.
 JV7214  DESIGNATION -  FRANKS
 JV7214  PID         -  JV7214
 JV7214  STATE/COUNTY-  MD/FREDERICK
 JV7214  COUNTRY     -  US
 JV7214  USGS QUAD   -  WALKERSVILLE (2016)
 JV7214
 JV7214                         *CURRENT SURVEY CONTROL
 JV7214  ______________________________________________________________________
 JV7214* NAD 83(2011) POSITION- 39 29 55.89605(N) 077 19 38.31730(W)   ADJUSTED
 JV7214* NAD 83(2011) ELLIP HT-    75.264 (meters)        (06/27/12)   ADJUSTED
 JV7214* NAD 83(2011) EPOCH   -  2010.00
 JV7214* NAVD 88 ORTHO HEIGHT -   108.02  (meters)      354.4   (feet) GPS OBS
 JV7214  ______________________________________________________________________
 JV7214  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 JV7214  GEOID HEIGHT    -        -32.770 (meters)                     GEOID12B
 JV7214  GEOID HEIGHT    -        -32.771 (meters)                     GEOID18
 JV7214  NAD 83(2011) X  -  1,081,186.052 (meters)                     COMP
 JV7214  NAD 83(2011) Y  - -4,808,286.180 (meters)                     COMP
 JV7214  NAD 83(2011) Z  -  4,035,253.729 (meters)                     COMP
 JV7214  LAPLACE CORR    -          5.10  (seconds)                    DEFLEC18
 JV7214
 JV7214  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7214  Standards:
 JV7214         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7214            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7214  -------------------------------------------------------------------
 JV7214  NETWORK    0.46   0.53           0.21   0.16   0.27      0.00876692
 JV7214  -------------------------------------------------------------------
 JV7214  Click here for local accuracies and other accuracy information.
 JV7214
 JV7214.The horizontal coordinates were established by GPS observations
 JV7214.and adjusted by the National Geodetic Survey in June 2012.
 JV7214
 JV7214.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7214.been affixed to the stable North American tectonic plate. See 
 JV7214.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7214
 JV7214.The horizontal coordinates are valid at the epoch date displayed above
 JV7214.which is a decimal equivalence of Year/Month/Day.
 JV7214
 JV7214.The orthometric height was determined by GPS observations and a
 JV7214.high-resolution geoid model using precise GPS observation and
 JV7214.processing techniques.
 JV7214
 JV7214.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7214.GEOID18 height accuracy estimate available here.
 JV7214
 JV7214.Click photographs - Photos may exist for this station.
 JV7214
 JV7214.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7214
 JV7214.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7214
 JV7214.The ellipsoidal height was determined by GPS observations
 JV7214.and is referenced to NAD 83.
 JV7214
 JV7214. The following values were computed from the NAD 83(2011) position.
 JV7214
 JV7214;                    North         East     Units Scale Factor Converg.
 JV7214;SPC MD       -   203,438.814   371,846.266   MT  1.00000891   -0 12 19.6
 JV7214;SPC MD       -   667,448.84  1,219,965.62   sFT  1.00000891   -0 12 19.6
 JV7214;UTM  18      - 4,374,723.884   299,886.260   MT  1.00009307   -1 28 50.9
 JV7214
 JV7214!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7214!SPC MD       -   0.99998819  x   1.00000891  =   0.99999710
 JV7214!UTM  18      -   0.99998819  x   1.00009307  =   1.00008126
 JV7214
 JV7214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9988674723(NAD 83)
 JV7214
 JV7214                          SUPERSEDED SURVEY CONTROL
 JV7214
 JV7214  NAD 83(2007)-  39 29 55.89624(N)    077 19 38.31795(W) AD(2002.00) 0
 JV7214  ELLIP H (02/10/07)   75.287  (m)                       GP(2002.00)    
 JV7214  ELLIP H (08/30/02)   75.290  (m)                       GP(       ) 4 2
 JV7214  NAD 83(1991)-  39 29 55.89704(N)    077 19 38.31902(W) AD(       ) 1
 JV7214  ELLIP H (02/09/94)   75.211  (m)                       GP(       ) 4 1
 JV7214  NAVD 88 (02/09/94)  108.0    (m)  GEOID93  model used  GPS OBS        
 JV7214
 JV7214.Superseded values are not recommended for survey control.
 JV7214
 JV7214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7214.See file dsdata.pdf to determine how the superseded data were derived.
 JV7214
 JV7214_MARKER: DB = BENCH MARK DISK
 JV7214_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7214_STAMPING: FRANKS 1993
 JV7214_MARK LOGO: MD-021
 JV7214_PROJECTION: FLUSH
 JV7214_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7214+STABILITY: SURFACE MOTION
 JV7214_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7214+SATELLITE: SATELLITE OBSERVATIONS - January 15, 2020
 JV7214
 JV7214  HISTORY     - Date     Condition        Report By
 JV7214  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7214  HISTORY     - 20011023 GOOD             DMW
 JV7214  HISTORY     - 20100620 GOOD             GEOCAC
 JV7214  HISTORY     - 20160520 GOOD             BASE9
 JV7214  HISTORY     - 20170803 GOOD             NGS
 JV7214  HISTORY     - 20200115 GOOD             WTBALL
 JV7214
 JV7214                          STATION DESCRIPTION
 JV7214
 JV7214'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7214'FROM THE INTERSECTION OF MD RTE 194 AND DEVILBISS BRIDGE ROAD IN
 JV7214'WALKERSVILLE, MD PROCEED NORTH ON RTE 194 0.5 MILES (0.8 KM) TO TO A
 JV7214'GRAVEL DRIVE AND THE STATION ON THE RIGHT. STATION IS 34 FEET
 JV7214'(10.4 M) SOUTHEAST OF THE CENTERLINE OF RTE 194 AND 107 FEET
 JV7214'(32.6 M) NORTHEAST OF A MAILBOX IN THE CENTER OF THE GRAVEL DRIVE.
 JV7214'STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND CONCRETE
 JV7214'MONUMENT SET FLUSH WITH THE GROUND.
 JV7214
 JV7214                          STATION RECOVERY (2001)
 JV7214
 JV7214'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV7214'RECOVERED IN GOOD CONDITION.
 JV7214
 JV7214                          STATION RECOVERY (2010)
 JV7214
 JV7214'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV7214'RECOVERED IN GOOD CONDITION
 JV7214
 JV7214                          STATION RECOVERY (2016)
 JV7214
 JV7214'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 JV7214'RECOVERED IN GOOD CONDITION.
 JV7214
 JV7214                          STATION RECOVERY (2017)
 JV7214
 JV7214'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (GS)
 JV7214'RECOVERED AS DESCRIBED.
 JV7214
 JV7214                          STATION RECOVERY (2020)
 JV7214
 JV7214'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV7214'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2245 ***********************************************************************
 JV2245  DESIGNATION -  FRED
 JV2245  PID         -  JV2245
 JV2245  STATE/COUNTY-  MD/FREDERICK
 JV2245  COUNTRY     -  US
 JV2245  USGS QUAD   -  FREDERICK (2016)
 JV2245
 JV2245                         *CURRENT SURVEY CONTROL
 JV2245  ______________________________________________________________________
 JV2245* NAD 83(1993) POSITION- 39 23 08.85016(N) 077 24 45.89318(W)   ADJUSTED
 JV2245* NAVD 88 ORTHO HEIGHT -    99.760 (meters)      327.30  (feet) ADJUSTED
 JV2245  ______________________________________________________________________
 JV2245  GEOID HEIGHT    -        -32.666 (meters)                     GEOID18
 JV2245  LAPLACE CORR    -          4.06  (seconds)                    DEFLEC18
 JV2245  DYNAMIC HEIGHT  -         99.707 (meters)      327.12  (feet) COMP
 JV2245  MODELED GRAVITY -    980,089.1   (mgal)                       NAVD 88
 JV2245
 JV2245  HORZ ORDER      -  SECOND
 JV2245  VERT ORDER      -  SECOND    CLASS 0
 JV2245
 JV2245.The horizontal coordinates were established by classical geodetic methods
 JV2245.and adjusted by the National Geodetic Survey in November 1994.
 JV2245
 JV2245.The orthometric height was determined by differential leveling and
 JV2245.adjusted by the NATIONAL GEODETIC SURVEY
 JV2245.in June 1991.
 JV2245
 JV2245.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2245.GEOID18 height accuracy estimate available here.
 JV2245
 JV2245.Click photographs - Photos may exist for this station.
 JV2245
 JV2245.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2245
 JV2245.The dynamic height is computed by dividing the NAVD 88
 JV2245.geopotential number by the normal gravity value computed on the
 JV2245.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2245.degrees latitude (g = 980.6199 gals.).
 JV2245
 JV2245.The modeled gravity was interpolated from observed gravity values.
 JV2245
 JV2245. The following values were computed from the NAD 83(1993) position.
 JV2245
 JV2245;                    North         East     Units Scale Factor Converg.
 JV2245;SPC MD       -   190,915.458   364,440.591   MT  0.99998940   -0 15 32.6
 JV2245;SPC MD       -   626,361.80  1,195,668.84   sFT  0.99998940   -0 15 32.6
 JV2245;UTM  18      - 4,362,366.870   292,203.115   MT  1.00013167   -1 31 53.5
 JV2245
 JV2245!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2245!SPC MD       -   0.99998947  x   0.99998940  =   0.99997887
 JV2245!UTM  18      -   0.99998947  x   1.00013167  =   1.00012114
 JV2245
 JV2245:                Primary Azimuth Mark                     Grid Az
 JV2245:SPC MD       -  CATOCTIN MTN RADIO WFMD FM MST           329 50 38.8
 JV2245:UTM  18      -  CATOCTIN MTN RADIO WFMD FM MST           331 06 59.7
 JV2245
 JV2245_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9220362366(NAD 83)
 JV2245
 JV2245|---------------------------------------------------------------------|
 JV2245| PID    Reference Object                     Distance      Geod. Az  |
 JV2245|                                                           dddmmss.s |
 JV2245| JV2246 FRED RM 1                            18.112 METERS 16127     |
 JV2245| JV2244 FRED RM 2                            27.972 METERS 31746     |
 JV2245| CJ9814 FRED AZ MK                                         3213659.5 |
 JV2245| JV4613 CATOCTIN MTN RADIO WFMD FM MST      APPROX.14.7 KM 3293506.2 |
 JV2245|---------------------------------------------------------------------|
 JV2245
 JV2245                          SUPERSEDED SURVEY CONTROL
 JV2245
 JV2245  NAD 83(1991)-  39 23 08.85009(N)    077 24 45.89270(W) AD(       ) 2
 JV2245  NAD 83(1986)-  39 23 08.85072(N)    077 24 45.90336(W) AD(       ) 2
 JV2245  NAD 27      -  39 23 08.47890(N)    077 24 46.94890(W) AD(       ) 2
 JV2245  NGVD 29              99.98   (m)          328.0    (f) LEVELING    3  
 JV2245  NGVD 29 (11/26/84)   99.979  (m)          328.01   (f) ADJUSTED    2 0
 JV2245
 JV2245.Superseded values are not recommended for survey control.
 JV2245
 JV2245.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2245.See file dsdata.pdf to determine how the superseded data were derived.
 JV2245
 JV2245_MARKER: DS = TRIANGULATION STATION DISK
 JV2245_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2245_STAMPING: FRED 1958 1971
 JV2245_MARK LOGO: CGS
 JV2245_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2245+STABILITY: SURFACE MOTION
 JV2245
 JV2245  HISTORY     - Date     Condition        Report By
 JV2245  HISTORY     - 1958     MONUMENTED       CGS
 JV2245  HISTORY     - 1958     GOOD             CGS
 JV2245  HISTORY     - 1971     SEE DESCRIPTION  NGS
 JV2245  HISTORY     - 20031102 MARK NOT FOUND   USPSQD
 JV2245
 JV2245                          STATION DESCRIPTION
 JV2245
 JV2245'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2245'THE STATION IS ABOUT 2 MILES SOUTH OF THE CENTER OF FREDERICK
 JV2245'AND ABOUT 0.1 MILE NORTHWEST OF THE JUNCTION OF U.S.HIGHWAYS
 JV2245'240 AND 15.  IT IS 68 FEET NORTHEAST OF THE APPROXIMATE CENTER
 JV2245'OF THE NORTHEAST LANE OF U.S.HIGHWAY 240, 30 FEET SW OF FENCE
 JV2245'LINE AND WITNESS POST AND 23 FEET WEST OF A TRIANGLE-BLAZED
 JV2245'TREE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED FRED 1958.
 JV2245'
 JV2245'R.M. NO. 1 IS 53 FEET NORTHEAST OF THE APPROXIMATE CENTER OF THE
 JV2245'NORTHEAST LANE OF U.S.HIGHWAY 240.  THE MARK IS SET IN A DRILL
 JV2245'HOLE IN OUTCROPPING ROCK WHICH IS FLUSH AND THE DISK IS STAMPED
 JV2245'FRED NO 1 1958.
 JV2245'
 JV2245'R.M. NO. 2 IS 56 FEET NORTHEAST OF THE APPROXIMATE CENTER OF
 JV2245'THE NORTHEAST LANE OF U.S.HIGHWAY 240 AND 25-1/2 FEET WEST-SOUTHWEST
 JV2245'OF FENCE LINE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED
 JV2245'FRED NO 2 1958.
 JV2245'
 JV2245'AZIMUTH MARK IS 29 FEET SOUTHWEST OF THE SOUTHEAST CORNER OF
 JV2245'BRIDGE, 24 FEET WEST OF POWER LINE POLE, 20 FEET SOUTHEAST OF
 JV2245'APPROXIMATE CENTER OF ROAD AND 3-1/2 FEET EAST OF WITNESS
 JV2245'POST.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED FRED 1958.
 JV2245'
 JV2245'TO REACH THE STATION FROM THE JUNCTION OF U.S.HIGHWAY 40
 JV2245'(EASTBOUND) AND U.S.HIGHWAY 15 IN FREDERICK.  GO SOUTH ON
 JV2245'U.S.HIGHWAY 15 FOR 0.85 MILE TO FORKS AT JUNCTION OF STATE
 JV2245'HIGHWAY 355, TAKE RIGHT FORK AND CONTINUE ON U.S.HIGHWAY 15 FOR
 JV2245'0.95 MILE TO THE JUNCTION OF U.S.HIGHWAY 240, TURN RIGHT AND GO
 JV2245'NORTHWEST ON U.S.HIGHWAY 240 FOR 0.1 MILE TO THE STATION ON
 JV2245'RIGHT AS DESCRIBED.
 JV2245'
 JV2245'TO REACH THE AZIMUTH MARK FROM THE STATION GO NORTHWEST ON
 JV2245'U.S.HIGHWAY 240 FOR 0.7 MILE TO THE MARK ON LEFT AT END OF BRIDGE
 JV2245'AS DESCRIBED.
 JV2245'
 JV2245'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV2245
 JV2245                          STATION RECOVERY (1958)
 JV2245
 JV2245'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2245'2.3 MI S FROM FREDERICK.
 JV2245'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 340 FROM THE INTERSECTION
 JV2245'OF U.S. HIGHWAY 40 (CITY ROUTE) AT FREDERICK, THENCE 1.7 MILES
 JV2245'SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT, 0.3 MILE
 JV2245'NORTHWEST OF THE CROSSING OF U.S. HIGHWAY 15, 68.8 FEET NORTHEAST
 JV2245'OF THE CENTER LINE OF THE NORTH BOUND LANE, 22 1/2 FEET SOUTHWEST
 JV2245'OF AN 18-INCH WALNUT TREE, 29 1/2 FEET SOUTHWEST OF A FENCELINE,
 JV2245'1 FOOT SOUTHWEST OF A METAL WITNESS POST, SET IN THE TOP OF A
 JV2245'CONCRETE POST FLUSH WITH THE GROUND AND ABOUT 20 FEET ABOVE THE
 JV2245'LEVEL OF THE HIGHWAY.
 JV2245
 JV2245                          STATION RECOVERY (1971)
 JV2245
 JV2245'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV2245'THE STATION MARK, REFERENCE MARK NO. 1 AND REFERENCE MARK NO. 2
 JV2245'WERE REPORTED DESTROYED WHEN THE THIRD LANE WAS ADDED TO THE
 JV2245'HIGHWAY.  HOWEVER, AFTER TWO AND ONE HALF DAYS OF DIGGING THE
 JV2245'UNDERGROUND MARK WAS RECOVERED IN ITS ORIGINAL POSITION.  THE
 JV2245'REFERENCE MARKS AND SURFACE STATION MARK HAD BEEN DESTROYED.  THE
 JV2245'AZIMUTH MARK WAS RECOVERED IN GOOD CONDITION.
 JV2245'
 JV2245'THE POSITION OF THE STATION WAS HELD WHILE THE SUBSURFACE MARK
 JV2245'WAS LOWERED, A NEW SURFACE STATION MARK SET, AND TWO NEW REFERENCE
 JV2245'MARKS WERE ESTABLISHED.  SEE THE FOLLOWING DESCRIPTION FOR DETAILS.
 JV2245'
 JV2245'THE STATION IS ABOUT 2.0 MILES SOUTH OF THE CENTER OF FREDERICK
 JV2245'AND 0.15 MILE NORTHWEST OF THE JUNCTION OF U.S. HIGHWAY 15 AND
 JV2245'I-70 S.  IT IS ON THE TOP OF A 20 FOOT CUT BANK AND AT THE EDGE
 JV2245'WHERE THE BANK STARTS SHARP SLOPE TO THE WEST, 45 FEET (SLOPE)
 JV2245'NORTHEAST OF THE OUTSIDE EDGE OF THE OUTSIDE THIRD TRAFFIC LANE
 JV2245'OF THE NORTH BOUND TRAFFIC OF I-70 S, 49.5 FEET WEST OF AN
 JV2245'INSIDE FENCE CORNER, 57.0 FEET NORTHWEST OF AN OUTSIDE FENCE
 JV2245'CORNER, 30.5 FEET SOUTHWEST OF A METAL WITNESS POST AND
 JV2245'SIGN, AND 11.5 FEET SOUTHEAST OF THE EAST END OF A LARGE
 JV2245'HIGHWAY SIGN I-70 WEST HAGERSTOWN JCT. 1/2 MILE.  THE MARK IS
 JV2245'FLUSH WITH GROUND SURFACE AND THE DISK IS STAMPED FRED 1958
 JV2245'1971.
 JV2245'
 JV2245'REFERENCE MARK NO. 3 IS LOCATED AT THE EAST EDGE OF THE HIGHWAY
 JV2245'RIGHT-OF-WAY, 43 FEET NORTHWEST OF AN INSIDE FENCE CORNER, 1.0
 JV2245'FOOT SOUTHWEST OF RIGHT-OF-WAY FENCE AND 0.8 FOOT SOUTHWEST OF A
 JV2245'METAL WITNESS POST AND SIGN.  PR PROJECTS 2 INCHES AND THE DISK
 JV2245'IS STAMPED FRED NO 3 1958 1971.
 JV2245'
 JV2245'REFERENCE MARK NO. 4 IS LOCATED ON THE EAST SIDE OF HIGHWAY ON
 JV2245'TOP OF CUT BANK, 47 FEET EAST OF OUTSIDE EDGE OF THE THIRD TRAFFIC
 JV2245'LANE OF THE NORTH BOUND TRAFFIC OF I-70 S, 34 FEET SOUTHWEST OF
 JV2245'AN INSIDE FENCE CORNER, 5 FEET EAST OF TOP OF CUT BANK AND 1.9
 JV2245'FEET NORTHWEST OF AN OUTSIDE FENCE CORNER OF RIGHT-OF-WAY
 JV2245'FENCE.  IT IS SET FLUSH WITH GROUND SURFACE AND THE DISK IS
 JV2245'STAMPED FRED NO 4 1958 1971.
 JV2245'
 JV2245'AZIMUTH MARK IS 29 FEET SOUTHWEST OF THE SOUTHEAST CORNER OF A
 JV2245'BRIDGE, 24 FEET WEST OF POWERLINE POLE, 20 FEET SOUTHEAST OF
 JV2245'CENTERLINE OF ROAD, AND 3.5 FEET EAST OF A WOODEN WITNESS
 JV2245'POST.  THE MARK IS FLUSH WITH SURFACE OF GROUND AND THE DISK IS
 JV2245'STAMPED FRED 1958.  THE MARK IS SOUTH OF THE FIRST BRIDGE
 JV2245'CROSSING HIGHWAY I-70 S, WEST OF THE STATION.  TO REACH FROM THE
 JV2245'STATION GO NORTHWEST ON HIGHWAY I-70 S FOR 0.7 MILE TO
 JV2245'OVERHEAD BRIDGE CROSSING HIGHWAY AND MARK SOUTH OF THIS
 JV2245'BRIDGE AS DESCRIBED.
 JV2245'
 JV2245'TO REACH THE STATION FROM WHERE INTERSTATE I-70 S CROSSES OVER
 JV2245'U.S. HIGHWAY 15, ABOUT 2.0 MILES SOUTH OF THE CENTER OF FREDERICK,
 JV2245'GO NORTHWEST ON HIGHWAY I-70 S FOR 0.15 MILE TO WHERE RAMP ON
 JV2245'RIGHT FROM U.S. HIGHWAY 15 JOINS HIGHWAY AND STATION ON TOP OF
 JV2245'20 FOOT CUT BANK ON THE RIGHT, NORTHEAST SIDE OF HIGHWAY AND ON
 JV2245'HIGHWAY RIGHT-OF-WAY PROPERTY.
 JV2245'
 JV2245'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV2245'1.5 MILES SOUTH OF FREDERICK.
 JV2245
 JV2245                          STATION RECOVERY (2003)
 JV2245
 JV2245'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV2245'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3901 ***********************************************************************
 JU3901  DESIGNATION -  FRED
 JU3901  PID         -  JU3901
 JU3901  STATE/COUNTY-  MD/CECIL
 JU3901  COUNTRY     -  US
 JU3901  USGS QUAD   -  ELKTON (2016)
 JU3901
 JU3901                         *CURRENT SURVEY CONTROL
 JU3901  ______________________________________________________________________
 JU3901* NAD 83(1991) POSITION- 39 30 12.51372(N) 075 46 43.37245(W)   ADJUSTED
 JU3901* NAVD 88 ORTHO HEIGHT -    19.4   (meters)       64.    (feet) VERTCON3
 JU3901  ______________________________________________________________________
 JU3901  GEOID HEIGHT    -        -33.388 (meters)                     GEOID18
 JU3901  LAPLACE CORR    -         -0.83  (seconds)                    DEFLEC18
 JU3901  HORZ ORDER      -  SECOND
 JU3901
 JU3901.The horizontal coordinates were established by classical geodetic methods
 JU3901.and adjusted by the National Geodetic Survey in January 1992.
 JU3901
 JU3901.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3901.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3901
 JU3901.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3901.GEOID18 height accuracy estimate available here.
 JU3901
 JU3901.Click photographs - Photos may exist for this station.
 JU3901
 JU3901.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3901
 JU3901. The following values were computed from the NAD 83(1991) position.
 JU3901
 JU3901;                    North         East     Units Scale Factor Converg.
 JU3901;SPC MD       -   204,603.477   505,039.598   MT  1.00000979   +0 45 59.5
 JU3901;SPC MD       -   671,269.91  1,656,950.75   sFT  1.00000979   +0 45 59.5
 JU3901;UTM  18      - 4,372,939.704   433,049.827   MT  0.99965519   -0 29 43.4
 JU3901
 JU3901!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3901!SPC MD       -   1.00000220  x   1.00000979  =   1.00001199
 JU3901!UTM  18      -   1.00000220  x   0.99965519  =   0.99965739
 JU3901
 JU3901:                Primary Azimuth Mark                     Grid Az
 JU3901:SPC MD       -  FRED AZ MK                               344 17 54.9
 JU3901:UTM  18      -  FRED AZ MK                               345 33 37.8
 JU3901
 JU3901_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3304972939(NAD 83)
 JU3901
 JU3901|---------------------------------------------------------------------|
 JU3901| PID    Reference Object                     Distance      Geod. Az  |
 JU3901|                                                           dddmmss.s |
 JU3901| JU3895 BOUNDARY MONUMENT 72 1976           402.841 METERS 0204639.3 |
 JU3901| CB1980 FRED RM 1                            26.377 METERS 15011     |
 JU3901| CB1981 FRED RM 2                            28.172 METERS 27859     |
 JU3901| CB1979 FRED AZ MK                                         3450354.4 |
 JU3901|---------------------------------------------------------------------|
 JU3901
 JU3901                          SUPERSEDED SURVEY CONTROL
 JU3901
 JU3901  NAD 83(1986)-  39 30 12.50670(N)    075 46 43.37996(W) AD(       ) 2
 JU3901  NAD 27      -  39 30 12.10530(N)    075 46 44.61660(W) AD(       ) 2
 JU3901  NGVD 29 (07/19/86)   19.6    (m)           64.     (f) VERT ANG       
 JU3901
 JU3901.Superseded values are not recommended for survey control.
 JU3901
 JU3901.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3901.See file dsdata.pdf to determine how the superseded data were derived.
 JU3901
 JU3901_MARKER: DS = TRIANGULATION STATION DISK
 JU3901_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3901_STAMPING: FRED 1961
 JU3901_MARK LOGO: CGS
 JU3901_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3901+STABILITY: SURFACE MOTION
 JU3901
 JU3901  HISTORY     - Date     Condition        Report By
 JU3901  HISTORY     - 1961     MONUMENTED       CGS
 JU3901  HISTORY     - 1975     GOOD             NGS
 JU3901  HISTORY     - 1976     GOOD             NGS
 JU3901
 JU3901                          STATION DESCRIPTION
 JU3901
 JU3901'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3901'THE STATION IS LOCATED ABOUT 5.0 MILES NORTHWEST OF MIDDLETOWN
 JU3901'DELAWARE, 2-1/2 MILES EAST-SOUTHEAST OF CHESAPEAKE CITY MARYLAND
 JU3901'AND ON PROPERTY OWNED BY MR. WILLIAM MULLER WHO GAVE PERMISSION.
 JU3901'
 JU3901'TO REACH THE STATION FROM THE MAIN INTERSECTION IN SOUTH
 JU3901'CHESAPEAKE CITY, GO EAST ON PAVED ROAD ALONG SOUTH SIDE OF THE CANAL
 JU3901'FOR 0.5 MILE TO A T-ROAD, TURN RIGHT AND GO EASTERLY ON PAVED
 JU3901'ROAD FOR 1.4 MILES TO A CROSSROAD, TURN RIGHT AND GO SOUTHERLY
 JU3901'FOR 0.8 MILES TO THE AZIMUTH MARK ON THE RIGHT, CONTINUE
 JU3901'SOUTHERLY ON PAVED ROAD FOR 0.45 MILE TO THE STATION ON THE
 JU3901'RIGHT.
 JU3901'
 JU3901'THE STATION, IS A STANDARD DISK SET IN THE TOP OF A 10 X 10 INCH
 JU3901'CONCRETE MONUMENT WHICH IS ABOUT 12 INCHES BELOW THE SURFACE OF
 JU3901'THE GROUND, STAMPED FRED 1961.  IT IS 60.5 FEET WEST-NORTHWEST
 JU3901'OF POWERLINE POLE NUMBER 118, 43.0 FEET NORTHWEST OF A FENCE
 JU3901'CORNER, 42.0 FEET WEST OF AN ASPHALT ROAD AND 18.0 FEET
 JU3901'NORTHEAST OF A STANDARD METAL WITNESS POST AND MARKER.
 JU3901'
 JU3901'REFERENCE MARK 1, IS A STANDARD DISK SET IN THE TOP OF A
 JU3901'10 X 10 INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 4 INCHES
 JU3901'ABOVE THE SURFACE OF THE GROUND, STAMPED FRED NO 1 1961.  IT IS
 JU3901'76.0 FEET SOUTHEAST OF A STANDARD METAL WITNESS POST AND MARKER,
 JU3901'68.0 FEET SOUTHWEST OF POWERLINE POLE NUMBER 118, 46.0 FEET SOUTH
 JU3901'OF A FENCE CORNER, 19.0 FEET WEST OF A ASPHALT ROAD AND 1.0
 JU3901'FEET EAST OF A FENCE LINE.
 JU3901'
 JU3901'REFERENCE MARK 2, IS A STANDARD DISK SET IN THE TOP OF A 10
 JU3901'X 10 INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 3 INCHES ABOVE
 JU3901'THE SURFACE OF THE GROUND, STAMPED FRED NO 2 1961.  IT IS 91.0
 JU3901'FEET NORTHWEST OF A STANDARD METAL WITNESS POST AND MARKER, 41.0
 JU3901'FEET WEST OF A FENCE CORNER, 11.0 FEET SOUTH OF THE APPROXIMATE
 JU3901'CENTER OF A FIELD ROAD AND 1.0 FEET NORTH OF A FENCE LINE.
 JU3901'
 JU3901'AZIMUTH MARK, IS A STANDARD DISK SET IN THE TOP OF A 10 X 10
 JU3901'INCH CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE
 JU3901'GROUND, STAMPED FRED 1961.  IT IS 25.9 FEET WEST OF THE
 JU3901'APPROXIMATE CENTER OF A ASPHALT ROAD, 6.2 FEET EAST-SOUTHEAST OF
 JU3901'A GUY LINE, 2.8 FEET SOUTH OF POWERLINE POLE AND 1.6 FEET WEST OF
 JU3901'A STANDARD METAL WITNESS POST AND MARKER.
 JU3901'
 JU3901'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JU3901
 JU3901                          STATION RECOVERY (1975)
 JU3901
 JU3901'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JU3901'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JU3901'CONDITION AS DESCRIBED IN THE 1961 DESCRIPTION.  A LONGER
 JU3901'DISTANCE OF 0.02 FOOT OR 0.005 METER WAS NOTED TO REFERENCE
 JU3901'MARK 1.  ALL OTHER DISTANCES AND DIRECTION AGREED WITH THE 1961
 JU3901'OBSERVATIONS.
 JU3901
 JU3901                          STATION RECOVERY (1976)
 JU3901
 JU3901'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3901'UNABLE TO MEASURE BETWEEN RMS.
 JU3901'
 JU3901'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JU3901'CONDITION AS DESCRIBED IN THE PREVIOUS DESCRIPTIONS.
 JU3901'
 JU3901'THE OLD MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 72 WAS RESET
 JU3901'AT THIS DATE, SEE DESCRIPTION THEREOF.
 JU3901'
 JU3901'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3901'2-1/2 MILES SOUTHEAST OF CHESAPEAKE CITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2246 ***********************************************************************
 JV2246  DESIGNATION -  FRED RM 1
 JV2246  PID         -  JV2246
 JV2246  STATE/COUNTY-  MD/FREDERICK
 JV2246  COUNTRY     -  US
 JV2246  USGS QUAD   -  FREDERICK (2016)
 JV2246
 JV2246                         *CURRENT SURVEY CONTROL
 JV2246  ______________________________________________________________________
 JV2246* NAD 83(1986) POSITION- 39 23 08.29   (N) 077 24 45.65   (W)   HD_HELD1
 JV2246* NAVD 88 ORTHO HEIGHT -    99.172 (meters)      325.37  (feet) ADJUSTED
 JV2246  ______________________________________________________________________
 JV2246  GEOID HEIGHT    -        -32.665 (meters)                     GEOID18
 JV2246  DYNAMIC HEIGHT  -         99.118 (meters)      325.19  (feet) COMP
 JV2246  MODELED GRAVITY -    980,089.1   (mgal)                       NAVD 88
 JV2246
 JV2246  VERT ORDER      -  SECOND    CLASS 0
 JV2246
 JV2246.The horizontal coordinates were determined by differentially corrected
 JV2246.hand held GPS observations or other comparable positioning techniques
 JV2246.and have an estimated accuracy of +/- 3 meters.
 JV2246
 JV2246.The orthometric height was determined by differential leveling and
 JV2246.adjusted by the NATIONAL GEODETIC SURVEY
 JV2246.in June 1991.
 JV2246
 JV2246.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2246.GEOID18 height accuracy estimate available here.
 JV2246
 JV2246.Click photographs - Photos may exist for this station.
 JV2246
 JV2246.The dynamic height is computed by dividing the NAVD 88
 JV2246.geopotential number by the normal gravity value computed on the
 JV2246.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2246.degrees latitude (g = 980.6199 gals.).
 JV2246
 JV2246.The modeled gravity was interpolated from observed gravity values.
 JV2246
 JV2246;                    North         East    Units  Estimated Accuracy
 JV2246;SPC MD       -   190,898.2     364,446.3     MT  (+/- 3 meters HH1 GPS) 
 JV2246
 JV2246_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9220862349(NAD 83)
 JV2246
 JV2246                          SUPERSEDED SURVEY CONTROL
 JV2246
 JV2246  NGVD 29 (11/26/84)   99.390  (m)          326.08   (f) ADJUSTED    2 0
 JV2246
 JV2246.Superseded values are not recommended for survey control.
 JV2246
 JV2246.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2246.See file dsdata.pdf to determine how the superseded data were derived.
 JV2246
 JV2246_MARKER: DR = REFERENCE MARK DISK
 JV2246_SETTING: 66 = SET IN ROCK OUTCROP
 JV2246_STAMPING: FRED NO 1 1958
 JV2246_MARK LOGO: CGS
 JV2246_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV2246+STABILITY: POSITION/ELEVATION WELL
 JV2246
 JV2246  HISTORY     - Date     Condition        Report By
 JV2246  HISTORY     - 1958     MONUMENTED       CGS
 JV2246  HISTORY     - 20031102 MARK NOT FOUND   USPSQD
 JV2246
 JV2246                          STATION DESCRIPTION
 JV2246
 JV2246'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2246'2.3 MI S FROM FREDERICK.
 JV2246'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 240 FROM THE INTERSECTION
 JV2246'OF U.S. HIGHWAY 40 (CITY ROUTE) AT FREDERICK, THENCE 1.7 MILES
 JV2246'SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT, 59.5
 JV2246'FEET SOUTH OF THE STATION, 5 FEET NORTHEAST OF THE TOP OF CUT, SET
 JV2246'IN THE TOP OF A 1-BY-1-FOOT OUTCROP FLUSH WITH THE GROUND.
 JV2246
 JV2246                          STATION RECOVERY (2003)
 JV2246
 JV2246'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV2246'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2244 ***********************************************************************
 JV2244  DESIGNATION -  FRED RM 2
 JV2244  PID         -  JV2244
 JV2244  STATE/COUNTY-  MD/FREDERICK
 JV2244  COUNTRY     -  US
 JV2244  USGS QUAD   -  FREDERICK (2016)
 JV2244
 JV2244                         *CURRENT SURVEY CONTROL
 JV2244  ______________________________________________________________________
 JV2244* NAD 83(1986) POSITION- 39 23 09.52   (N) 077 24 46.68   (W)   HD_HELD1
 JV2244* NAVD 88 ORTHO HEIGHT -    99.250 (meters)      325.62  (feet) ADJUSTED
 JV2244  ______________________________________________________________________
 JV2244  GEOID HEIGHT    -        -32.667 (meters)                     GEOID18
 JV2244  DYNAMIC HEIGHT  -         99.196 (meters)      325.45  (feet) COMP
 JV2244  MODELED GRAVITY -    980,089.1   (mgal)                       NAVD 88
 JV2244
 JV2244  VERT ORDER      -  SECOND    CLASS 0
 JV2244
 JV2244.The horizontal coordinates were determined by differentially corrected
 JV2244.hand held GPS observations or other comparable positioning techniques
 JV2244.and have an estimated accuracy of +/- 3 meters.
 JV2244
 JV2244.The orthometric height was determined by differential leveling and
 JV2244.adjusted by the NATIONAL GEODETIC SURVEY
 JV2244.in June 1991.
 JV2244
 JV2244.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2244.GEOID18 height accuracy estimate available here.
 JV2244
 JV2244.Click photographs - Photos may exist for this station.
 JV2244
 JV2244.The dynamic height is computed by dividing the NAVD 88
 JV2244.geopotential number by the normal gravity value computed on the
 JV2244.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2244.degrees latitude (g = 980.6199 gals.).
 JV2244
 JV2244.The modeled gravity was interpolated from observed gravity values.
 JV2244
 JV2244;                    North         East    Units  Estimated Accuracy
 JV2244;SPC MD       -   190,936.2     364,421.9     MT  (+/- 3 meters HH1 GPS) 
 JV2244
 JV2244_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9218462388(NAD 83)
 JV2244
 JV2244                          SUPERSEDED SURVEY CONTROL
 JV2244
 JV2244  NGVD 29 (11/26/84)   99.468  (m)          326.34   (f) ADJUSTED    2 0
 JV2244
 JV2244.Superseded values are not recommended for survey control.
 JV2244
 JV2244.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2244.See file dsdata.pdf to determine how the superseded data were derived.
 JV2244
 JV2244_MARKER: DR = REFERENCE MARK DISK
 JV2244_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2244_STAMPING: FRED NO 2 1958
 JV2244_MARK LOGO: CGS
 JV2244_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2244+STABILITY: SURFACE MOTION
 JV2244
 JV2244  HISTORY     - Date     Condition        Report By
 JV2244  HISTORY     - 1958     MONUMENTED       CGS
 JV2244
 JV2244                          STATION DESCRIPTION
 JV2244
 JV2244'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2244'2.3 MI S FROM FREDERICK.
 JV2244'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 340 FROM THE INTERSECTION
 JV2244'OF U.S. HIGHWAY 40 (CITY ROUTE) AT FREDERICK, THENCE 1.7 MILES
 JV2244'SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT, 91.9
 JV2244'FEET NORTHWEST OF THE STATION, 25.5 FEET SOUTHWEST OF A FENCE
 JV2244'LINE AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2527 ***********************************************************************
 JV2527  DESIGNATION -  FREDERICK
 JV2527  PID         -  JV2527
 JV2527  STATE/COUNTY-  MD/FREDERICK
 JV2527  COUNTRY     -  US
 JV2527  USGS QUAD   -  FREDERICK (2016)
 JV2527
 JV2527                         *CURRENT SURVEY CONTROL
 JV2527  ______________________________________________________________________
 JV2527* NAD 83(1986) POSITION- 39 24 58.0    (N) 077 24 38.3    (W)   HD_HELD2
 JV2527* NAVD 88 ORTHO HEIGHT -    88.062 (meters)      288.92  (feet) ADJUSTED
 JV2527  ______________________________________________________________________
 JV2527  GEOID HEIGHT    -        -32.728 (meters)                     GEOID18
 JV2527  DYNAMIC HEIGHT  -         88.015 (meters)      288.76  (feet) COMP
 JV2527  MODELED GRAVITY -    980,091.1   (mgal)                       NAVD 88
 JV2527
 JV2527  VERT ORDER      -  SECOND    CLASS I
 JV2527
 JV2527.The horizontal coordinates were established by autonomous hand held GPS
 JV2527.observations and have an estimated accuracy of +/- 10 meters.
 JV2527
 JV2527.The orthometric height was determined by differential leveling and
 JV2527.adjusted by the NATIONAL GEODETIC SURVEY
 JV2527.in June 1991.
 JV2527
 JV2527.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2527.GEOID18 height accuracy estimate available here.
 JV2527
 JV2527.Click photographs - Photos may exist for this station.
 JV2527
 JV2527.The dynamic height is computed by dividing the NAVD 88
 JV2527.geopotential number by the normal gravity value computed on the
 JV2527.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2527.degrees latitude (g = 980.6199 gals.).
 JV2527
 JV2527.The modeled gravity was interpolated from observed gravity values.
 JV2527
 JV2527;                    North         East    Units  Estimated Accuracy
 JV2527;SPC MD       -   194,281.      364,637.      MT  (+/- 10 meters HH2 GPS)
 JV2527
 JV2527_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9247465727(NAD 83)
 JV2527
 JV2527                          SUPERSEDED SURVEY CONTROL
 JV2527
 JV2527  NGVD 29 (11/26/84)   88.284  (m)          289.65   (f) ADJUSTED    2 0
 JV2527
 JV2527.Superseded values are not recommended for survey control.
 JV2527
 JV2527.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2527.See file dsdata.pdf to determine how the superseded data were derived.
 JV2527
 JV2527_MARKER: DB = BENCH MARK DISK
 JV2527_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2527_SP_SET: BUILDING WALL
 JV2527_STAMPING: FREDERICK 1935
 JV2527_MARK LOGO: CGS
 JV2527_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2527_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2527_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2527+SATELLITE: SATELLITE OBSERVATIONS - April 04, 2020
 JV2527
 JV2527  HISTORY     - Date     Condition        Report By
 JV2527  HISTORY     - 1935     MONUMENTED       CGS
 JV2527  HISTORY     - 1943     GOOD             CGS
 JV2527  HISTORY     - 20011105 GOOD             MDSHA
 JV2527  HISTORY     - 20031102 GOOD             USPSQD
 JV2527  HISTORY     - 20051105 GOOD             NGS
 JV2527  HISTORY     - 20081004 GOOD             GEOCAC
 JV2527  HISTORY     - 20140604 GOOD             RODCON
 JV2527  HISTORY     - 20200404 GOOD             WSRR
 JV2527
 JV2527                          STATION DESCRIPTION
 JV2527
 JV2527'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV2527'AT FREDERICK.
 JV2527'AT FREDERICK, FREDERICK COUNTY, ON NORTH MARKET STREET, AT
 JV2527'THE FIRST BLOCK NORTH OF CHURCH STREET, 42 FEET EAST OF THE
 JV2527'CENTER LINE OF THE STREET, IN THE WEST WALL OF THE CITY OPERA
 JV2527'HOUSE, 1.2 FEET NORTH OF THE SOUTH WALL, AND ABOUT 8 INCHES
 JV2527'ABOVE THE SIDEWALK.  A STANDARD DISK, STAMPED FREDERICK 1935 AND
 JV2527'SET VERTICALLY.
 JV2527
 JV2527                          STATION RECOVERY (1943)
 JV2527
 JV2527'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 JV2527'RECOVERED IN GOOD CONDITION.
 JV2527
 JV2527                          STATION RECOVERY (2001)
 JV2527
 JV2527'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2527'RECOVERED AS DESCRIBED.
 JV2527
 JV2527                          STATION RECOVERY (2003)
 JV2527
 JV2527'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV2527'RECOVERED IN GOOD CONDITION.
 JV2527
 JV2527                          STATION RECOVERY (2005)
 JV2527
 JV2527'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (CSC)
 JV2527'THE CITY OPERA HOUSE IS NOW BREWER'S ALLEY MICRO-BREWERY AND
 JV2527'RESTAURANT.  AS THE MARK IS SET VERTICALLY IN THE BUILDING WALL AND IS
 JV2527'SURROUNDED BY BUILDINGS IT IS NOT SUITABLE FOR GPS.
 JV2527
 JV2527                          STATION RECOVERY (2008)
 JV2527
 JV2527'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV2527'RECOVERED IN GOOD CONDITION.
 JV2527
 JV2527                          STATION RECOVERY (2014)
 JV2527
 JV2527'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV2527'RECOVERED IN GOOD CONDITION.
 JV2527
 JV2527                          STATION RECOVERY (2020)
 JV2527
 JV2527'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2020 (MFM)
 JV2527'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2531 ***********************************************************************
 JV2531  DESIGNATION -  FREDERICK
 JV2531  PID         -  JV2531
 JV2531  STATE/COUNTY-  MD/FREDERICK
 JV2531  COUNTRY     -  US
 JV2531  USGS QUAD   -  FREDERICK (2016)
 JV2531
 JV2531                         *CURRENT SURVEY CONTROL
 JV2531  ______________________________________________________________________
 JV2531* NAD 83(1993) POSITION- 39 26 04.56579(N) 077 25 30.37316(W)   ADJUSTED
 JV2531* NAVD 88 ORTHO HEIGHT -   108.704 (meters)      356.64  (feet) ADJUSTED
 JV2531  ______________________________________________________________________
 JV2531  GEOID HEIGHT    -        -32.787 (meters)                     GEOID18
 JV2531  LAPLACE CORR    -          2.67  (seconds)                    DEFLEC18
 JV2531  DYNAMIC HEIGHT  -        108.646 (meters)      356.45  (feet) COMP
 JV2531  MODELED GRAVITY -    980,090.0   (mgal)                       NAVD 88
 JV2531
 JV2531  HORZ ORDER      -  FIRST
 JV2531  VERT ORDER      -  SECOND    CLASS 0
 JV2531
 JV2531.This mark is at Frederick Airport (FDK)
 JV2531
 JV2531.The horizontal coordinates were established by classical geodetic methods
 JV2531.and adjusted by the National Geodetic Survey in November 1994.
 JV2531
 JV2531.The orthometric height was determined by differential leveling and
 JV2531.adjusted by the NATIONAL GEODETIC SURVEY
 JV2531.in June 1991.
 JV2531
 JV2531.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2531.GEOID18 height accuracy estimate available here.
 JV2531
 JV2531.Click photographs - Photos may exist for this station.
 JV2531
 JV2531.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2531
 JV2531.The dynamic height is computed by dividing the NAVD 88
 JV2531.geopotential number by the normal gravity value computed on the
 JV2531.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2531.degrees latitude (g = 980.6199 gals.).
 JV2531
 JV2531.The modeled gravity was interpolated from observed gravity values.
 JV2531
 JV2531. The following values were computed from the NAD 83(1993) position.
 JV2531
 JV2531;                    North         East     Units Scale Factor Converg.
 JV2531;SPC MD       -   196,339.284   363,401.368   MT  0.99999734   -0 16 00.5
 JV2531;SPC MD       -   644,156.47  1,192,259.32   sFT  0.99999734   -0 16 00.5
 JV2531;UTM  18      - 4,367,813.217   291,284.547   MT  1.00013638   -1 32 27.5
 JV2531
 JV2531!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2531!SPC MD       -   0.99998809  x   0.99999734  =   0.99998543
 JV2531!UTM  18      -   0.99998809  x   1.00013638  =   1.00012447
 JV2531
 JV2531:                Primary Azimuth Mark                     Grid Az
 JV2531:SPC MD       -  FREDERICK AZ MK                          243 34 59.2
 JV2531:UTM  18      -  FREDERICK AZ MK                          244 51 26.2
 JV2531
 JV2531_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9128467813(NAD 83)
 JV2531
 JV2531|---------------------------------------------------------------------|
 JV2531| PID    Reference Object                     Distance      Geod. Az  |
 JV2531|                                                           dddmmss.s |
 JV2531| JV2530 FREDERICK RM 2                       23.870 METERS 17747     |
 JV2531| JV4605 FREDERICK MUN AIRPORT BCN 5 A        20.633 METERS 18727     |
 JV2531| CJ9815 FREDERICK AZ MK                                    2431858.7 |
 JV2531| JV2532 FREDERICK RM 1                       14.952 METERS 34052     |
 JV2531|---------------------------------------------------------------------|
 JV2531
 JV2531                          SUPERSEDED SURVEY CONTROL
 JV2531
 JV2531  NAD 83(1991)-  39 26 04.56614(N)    077 25 30.37357(W) AD(       ) 1
 JV2531  NAD 83(1986)-  39 26 04.56645(N)    077 25 30.38268(W) AD(       ) 1
 JV2531  NAD 27      -  39 26 04.20200(N)    077 25 31.44000(W) AD(       ) 1
 JV2531  NGVD 29             108.92   (m)          357.3    (f) LEVELING    3  
 JV2531  NGVD 29 (11/26/84)  108.923  (m)          357.36   (f) ADJUSTED    2 0
 JV2531
 JV2531.Superseded values are not recommended for survey control.
 JV2531
 JV2531.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2531.See file dsdata.pdf to determine how the superseded data were derived.
 JV2531
 JV2531_MARKER: DS = TRIANGULATION STATION DISK
 JV2531_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2531_STAMPING: FREDERICK 1939
 JV2531_MARK LOGO: CGS
 JV2531_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2531+STABILITY: SURFACE MOTION
 JV2531
 JV2531  HISTORY     - Date     Condition        Report By
 JV2531  HISTORY     - 1939     MONUMENTED       CGS
 JV2531  HISTORY     - 1941     GOOD             CGS
 JV2531  HISTORY     - 1958     SEE DESCRIPTION  CGS
 JV2531  HISTORY     - 20031102 MARK NOT FOUND   USPSQD
 JV2531
 JV2531                          STATION DESCRIPTION
 JV2531
 JV2531'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV2531'STATION FREDERICK IS LOCATED AT THE NE CORNER OF THE FREDERICK
 JV2531'(GOVERNMENT) AIRPORT, ABOUT 1.3 MILES NW OF THE CENTER OF
 JV2531'FREDERICK.  MARK IS SET IN A ROUND MASS OF CONCRETE FLUSH WITH
 JV2531'THE GROUND.  IT IS 18 FEET S OF THE CENTER LINE OF MACADAM ROAD,
 JV2531'12 FEET S OF WIRE-FENCE LINE AND 63.3 FEET N OF THE NW LEG OF THE
 JV2531'AIRWAY BEACON.
 JV2531'
 JV2531'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV2531'DISKS SET IN CONCRETE.
 JV2531'
 JV2531'AZIMUTH MARK IS A STANDARD BRONZE DISK IN A BOULDER.
 JV2531'
 JV2531'REFERENCE MARK NO.1 IS SET IN CONCRETE AND PROJECTS 6 INCHES.  IT
 JV2531'IS 1 FOOT S OF WIRE-FENCE LINE AND 8 FEET S OF THE CENTER LINE
 JV2531'OF A MACADAM ROAD.
 JV2531'
 JV2531'REFERENCE MARK NO.2 IS SET IN DRILL HOLE IN STEP OF ATTENDANT
 JV2531'HOUSE AT THE AIRPORT BEACON.  THE STEP PROJECTS 5 INCHES.  THE
 JV2531'MARK IS 18 FEET W OF A GRAVEL ROAD AND 79 FEET SW OF A MACADAM
 JV2531'ROAD.
 JV2531'
 JV2531'AZIMUTH MARK IS SET IN A DRILL HOLE IN A BOULDER PROJECTING 8
 JV2531'INCHES.  IT IS 48 FEET SE OF AN AIRPORT BOUNDARY LIGHT POLE AND
 JV2531'75 FEET E OF THE INTERURBAN TROLLEY TRACKS.  IT IS LOCATED ABOUT
 JV2531'0.6 MILE WSW OF THE STATION AT THE SW EDGE OF AIRPORT.
 JV2531'
 JV2531'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 15 AND
 JV2531'U.S. HIGHWAY 40 IN FREDERICK GO N ON U.S. HIGHWAY 15 FOR 0.6 MILE
 JV2531'TO THE FOUNTAIN AT SEVENTH STREET, THEN TURN LEFT AND GO OUT
 JV2531'SEVENTH STREET FOR 1.2 MILES TO AIRPORT BEACON AND STATION.
 JV2531'
 JV2531'HEIGHT OF LIGHT ABOVE STATION MARK 5 METERS.
 JV2531
 JV2531                          STATION RECOVERY (1941)
 JV2531
 JV2531'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941
 JV2531'1.8 MI NW FROM FREDERICK.
 JV2531'ABOUT 1.8 MILES NORTHWEST OF THE CITY OPERA HOUSE AT FREDERICK,
 JV2531'FREDERICK COUNTY, AT THE SOUTHEAST CORNER OF FREDERICK AIRPORT,
 JV2531'61.4 FEET NORTHEAST OF THE NORTHEAST LEG OF THE AIRWAY BEACON
 JV2531'TOWER, 78.3 FEET NORTHEAST OF R.M. 2 FREDERICK, DESCRIBED ABOVE,
 JV2531'49.1 FEET SOUTHWEST OF R.M. 1 FREDERICK, DESCRIBED BELOW, 36 FEET
 JV2531'WEST OF THE CENTER LINE OF SEVENTH AVENUE, AND 15.5 FEET WEST
 JV2531'OF THE RIGHT-OF-WAY FENCE.  A STANDARD TRIANGULATION-STATION
 JV2531'DISK, STAMPED FREDERICK 1939 AND SET IN THE TOP OF A CONCRETE
 JV2531'POST.
 JV2531
 JV2531                          STATION RECOVERY (1958)
 JV2531
 JV2531'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2531'STATION DESTROYED.  A SEARCH WAS MADE FOR STATION MARK, REFERENCE
 JV2531'MARK NO. 2 AND AZI. MK, BUT THEY WERE NOT RECOVERED.  REFERENCE
 JV2531'MARK NO. 1 WAS FOUND BROKEN JUST BELOW THE SURFACE OF THE
 JV2531'GROUND.  AN ATTEMPT WAS MADE TO RECOVER THE UNDERGROUND STATION
 JV2531'MARK BUT TO NO AVAIL.  IT IS BELIEVED TO HAVE BEEN DESTROYED BY
 JV2531'CONSTRUCTION OF STREET CURB.
 JV2531'
 JV2531'REFERENCE MARK NO. 1 WAS DESTROYED TO MAKE WAY FOR THE
 JV2531'CONSTRUCTION OF NEW GUARD GATE.
 JV2531
 JV2531                          STATION RECOVERY (2003)
 JV2531
 JV2531'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV2531'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1385 ***********************************************************************
 JW1385  DESIGNATION -  FREDERICK
 JW1385  PID         -  JW1385
 JW1385  STATE/COUNTY-  MD/WASHINGTON
 JW1385  COUNTRY     -  US
 JW1385  USGS QUAD   -  BIG POOL (2016)
 JW1385
 JW1385                         *CURRENT SURVEY CONTROL
 JW1385  ______________________________________________________________________
 JW1385* NAD 83(1991) POSITION- 39 37 04.04028(N) 078 00 03.44904(W)   ADJUSTED
 JW1385* NAVD 88 ORTHO HEIGHT -   171.8   (meters)      564.    (feet) VERTCON3
 JW1385  ______________________________________________________________________
 JW1385  GEOID HEIGHT    -        -34.254 (meters)                     GEOID18
 JW1385  LAPLACE CORR    -         -1.05  (seconds)                    DEFLEC18
 JW1385  HORZ ORDER      -  SECOND
 JW1385
 JW1385.The horizontal coordinates were established by classical geodetic methods
 JW1385.and adjusted by the National Geodetic Survey in January 1992.
 JW1385
 JW1385.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1385.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1385
 JW1385.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1385.GEOID18 height accuracy estimate available here.
 JW1385
 JW1385.Click photographs - Photos may exist for this station.
 JW1385
 JW1385.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1385
 JW1385. The following values were computed from the NAD 83(1991) position.
 JW1385
 JW1385;                    North         East     Units Scale Factor Converg.
 JW1385;SPC MD       -   217,064.067   314,048.507   MT  1.00003366   -0 37 41.6
 JW1385;SPC MD       -   712,151.03  1,030,340.81   sFT  1.00003366   -0 37 41.6
 JW1385;SPC PA S     -    31,615.473   578,449.362   MT  1.00006431   -0 09 46.2
 JW1385;SPC PA S     -   103,725.10  1,897,795.95   sFT  1.00006431   -0 09 46.2
 JW1385;SPC WV N     -   125,167.605   728,706.215   MT  0.99994075   +0 57 21.8
 JW1385;SPC WV N     -   410,654.05  2,390,763.64   sFT  0.99994075   +0 57 21.8
 JW1385;UTM  17      - 4,389,635.442   757,441.081   MT  1.00041605   +1 54 48.3
 JW1385;UTM  18      - 4,389,640.939   242,394.408   MT  1.00041709   -1 54 52.7
 JW1385
 JW1385!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1385!SPC MD       -   0.99997842  x   1.00003366  =   1.00001208
 JW1385!SPC PA S     -   0.99997842  x   1.00006431  =   1.00004273
 JW1385!SPC WV N     -   0.99997842  x   0.99994075  =   0.99991917
 JW1385!UTM  17      -   0.99997842  x   1.00041605  =   1.00039446
 JW1385!UTM  18      -   0.99997842  x   1.00041709  =   1.00039550
 JW1385
 JW1385:                Primary Azimuth Mark                     Grid Az
 JW1385:SPC MD       -  FREDERICK AZ MK                          089 05 54.0
 JW1385:SPC PA S     -  FREDERICK AZ MK                          088 37 58.6
 JW1385:SPC WV N     -  FREDERICK AZ MK                          087 30 50.6
 JW1385:UTM  17      -  FREDERICK AZ MK                          086 33 24.1
 JW1385:UTM  18      -  FREDERICK AZ MK                          090 23 05.1
 JW1385
 JW1385_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD5744189635(NAD 83)
 JW1385
 JW1385|---------------------------------------------------------------------|
 JW1385| PID    Reference Object                     Distance      Geod. Az  |
 JW1385|                                                           dddmmss.s |
 JW1385| JW1386 FREDERICK RM 1                       23.044 METERS 05048     |
 JW1385| CJ9816 FREDERICK AZ MK                                    0882812.4 |
 JW1385| CJ9817 FREDERICK RM 2                       22.465 METERS 32742     |
 JW1385|---------------------------------------------------------------------|
 JW1385
 JW1385                          SUPERSEDED SURVEY CONTROL
 JW1385
 JW1385  NAD 83(1986)-  39 37 04.04043(N)    078 00 03.45739(W) AD(       ) 2
 JW1385  NAD 27      -  39 37 03.69400(N)    078 00 04.45900(W) AD(       ) 2
 JW1385  NGVD 29 (07/19/86)  172.0    (m)          564.     (f) VERT ANG       
 JW1385
 JW1385.Superseded values are not recommended for survey control.
 JW1385
 JW1385.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1385.See file dsdata.pdf to determine how the superseded data were derived.
 JW1385
 JW1385_MARKER: DS = TRIANGULATION STATION DISK
 JW1385_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1385_STAMPING: FREDERICK 1955
 JW1385_MARK LOGO: CGS
 JW1385
 JW1385  HISTORY     - Date     Condition        Report By
 JW1385  HISTORY     - 1955     MONUMENTED       CGS
 JW1385  HISTORY     - 1967     GOOD             CGS
 JW1385  HISTORY     - 1968     GOOD             CGS
 JW1385  HISTORY     - 1972     GOOD             WVGS
 JW1385  HISTORY     - 20060429 POOR             GEOCAC
 JW1385  HISTORY     - 20100404 POOR             GEOCAC
 JW1385
 JW1385                          STATION DESCRIPTION
 JW1385
 JW1385'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1385'THE STATION IS 15 MILES WEST-SOUTHWEST OF HAGERSTOWN, 5 MILES
 JW1385'SOUTHWEST OF CLEAR SPRING, 0.05 MILE EAST OF THE ENTRANCE TO
 JW1385'FORT FREDERICK MARYLAND STATE PARK, 125 FEET NORTHEAST OF A FARM
 JW1385'HOME, 32 FEET SOUTH OF THE CENTER OF STATE HIGHWAY 56, 23 FEET
 JW1385'SOUTHWEST OF TELEPHONE POLE NO. 26 AND 3 FEET EAST OF A 4 IN X 4
 JW1385'IN WHITE WITNESS POST.
 JW1385'
 JW1385'TO REACH THE STATION FROM THE JUNCTION OF THE FORT FREDERICK
 JW1385'ROAD AND U.S. HIGHWAY 40 IN CLEAR SPRING, GO SOUTH ON THE MAIN
 JW1385'PAVED ROAD FOR 5.5 MILES TO THE AZIMUTH MARK ON THE RIGHT AS
 JW1385'DESCRIBED, CONTINUE ON THE PAVED ROAD FOR 0.2 MILE TO THE
 JW1385'STATION ON THE LEFT.
 JW1385'
 JW1385'THE STATION MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED
 JW1385'FREDERICK 1955.
 JW1385'
 JW1385'REFERENCE MARK 1 IS 23 FEET NORTH OF THE CENTER OF THE HIGHWAY
 JW1385'AND 1 FOOT SOUTH OF A FENCE.  THE MARK PROJECTS 8 INCHES, AND
 JW1385'THE DISK IS STAMPED FREDERICK NO 1 1955.
 JW1385'
 JW1385'REFERENCE MARK 2 IS 23 FEET NORTH OF THE CENTER OF THE HIGHWAY
 JW1385'AND 1 FOOT SOUTH OF A FENCE.  THE MARK PROJECTS 6 INCHES, AND
 JW1385'THE DISK IS STAMPED FREDERICK NO 2 1955.
 JW1385'
 JW1385'THE AZIMUTH MARK IS 27 FEET SOUTH OF THE SOUTHEAST CORNER OF A
 JW1385'HOUSE, 15 FEET NORTH OF THE CENTER OF STATE HIGHWAY 56 AND 1
 JW1385'FOOT SOUTH OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK IS
 JW1385'FLUSH WITH THE GROUND, AND THE DISK IS STAMPED FREDERICK 1955.
 JW1385'
 JW1385'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JW1385
 JW1385                          STATION RECOVERY (1967)
 JW1385
 JW1385'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JCB)
 JW1385'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO
 JW1385'BE IN GOOD CONDITION.  THE AZIMUTH MARK APPEARS TO HAVE BEEN
 JW1385'STRUCK AND IS LEANING SLIGHTLY TOWARD THE STATION BUT IS FIRM IN
 JW1385'THE GROUND.  THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JW1385'
 JW1385'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JW1385'ABOUT 5 MILES SOUTHWEST OF CLEAR SPRING.
 JW1385
 JW1385                          STATION RECOVERY (1968)
 JW1385
 JW1385'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968 (WOK)
 JW1385'THE STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED AND
 JW1385'FOUND IN GOOD CONDITION.  DIRECTION AND DISTANCE TO THE REFERENCE
 JW1385'MARKS CHECKED.
 JW1385'
 JW1385'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JW1385'5 MILES SOUTHWEST OF CLEAR SPRING.
 JW1385
 JW1385                          STATION RECOVERY (1972)
 JW1385
 JW1385'RECOVERY NOTE BY WEST VIRGINIA GEODETIC SURVEY 1972 (JRB)
 JW1385'FREDERICK 1935 GOOD - IN 12 IN. DIAMETER CONCRETE POST SEVERAL
 JW1385'INCHES ABOVE GROUND LEVEL IN WOODS ALONG MD STATE RT 56, ABOVE
 JW1385'4 FT EMBANKMENT
 JW1385
 JW1385                          STATION RECOVERY (2006)
 JW1385
 JW1385'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 JW1385'STATION DISK IS MISSING BUT DISK STEM AND MOUNUMENT REMAIN IN PLACE.
 JW1385
 JW1385                          STATION RECOVERY (2010)
 JW1385
 JW1385'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JW1385'STATION RECOVERED IN POOR CONDITION. STATION DISK IS MISSING, STEM
 JW1385'HOLE VISIBLE IN CEMENT POST.
 JW1385'
 JW1385'RM1 FOUND IN POOR CONDITION, TOP OF POST HAVE BEEN SHEARED OFF AND
 JW1385'LEANING TO THE SIDE.
 JW1385'
 JW1385'RM2 FOUND IN POOR CONDITION, POST IS LEANING AT AN ANGLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8144 ***********************************************************************
 HV8144  DESIGNATION -  FREDERICK
 HV8144  PID         -  HV8144
 HV8144  STATE/COUNTY-  MD/CALVERT
 HV8144  COUNTRY     -  US
 HV8144  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV8144
 HV8144                         *CURRENT SURVEY CONTROL
 HV8144  ______________________________________________________________________
 HV8144* NAD 83(1991) POSITION- 38 20 36.45438(N) 076 26 49.61689(W)   NO CHECK
 HV8144* NAVD 88 ORTHO HEIGHT -     0.    (meters)        0.    (feet) SCALED
 HV8144  ______________________________________________________________________
 HV8144  GEOID HEIGHT    -        -34.386 (meters)                     GEOID18
 HV8144  LAPLACE CORR    -         -4.77  (seconds)                    DEFLEC18
 HV8144  HORZ ORDER      -  THIRD
 HV8144
 HV8144.The horizontal coordinates were established by classical geodetic methods
 HV8144.and adjusted by the National Geodetic Survey in January 1992.
 HV8144
 HV8144.No horizontal observational check was made to the station.
 HV8144
 HV8144.The orthometric height was scaled from a topographic map.
 HV8144
 HV8144.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8144.GEOID18 height accuracy estimate available here.
 HV8144
 HV8144.Click photographs - Photos may exist for this station.
 HV8144
 HV8144.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8144
 HV8144. The following values were computed from the NAD 83(1991) position.
 HV8144
 HV8144;                    North         East     Units Scale Factor Converg.
 HV8144;SPC MD       -    75,273.323   448,333.174   MT  0.99999272   +0 20 49.2
 HV8144;SPC MD       -   246,959.23  1,470,906.42   sFT  0.99999272   +0 20 49.2
 HV8144;UTM  18      - 4,244,914.550   373,538.819   MT  0.99979695   -0 53 52.3
 HV8144
 HV8144!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8144!SPC MD       -   1.00000533  x   0.99999272  =   0.99999805
 HV8144!UTM  18      -   1.00000533  x   0.99979695  =   0.99980228
 HV8144
 HV8144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7353844914(NAD 83)
 HV8144
 HV8144                          SUPERSEDED SURVEY CONTROL
 HV8144
 HV8144  NAD 83(1986)-  38 20 36.45497(N)    076 26 49.63535(W) AD(       ) 3
 HV8144
 HV8144.Superseded values are not recommended for survey control.
 HV8144
 HV8144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8144.See file dsdata.pdf to determine how the superseded data were derived.
 HV8144
 HV8144_MARKER: N = NAIL
 HV8144_SETTING: 0 = UNSPECIFIED SETTING
 HV8144_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8144_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8144
 HV8144  HISTORY     - Date     Condition        Report By
 HV8144  HISTORY     - 1987     MONUMENTED       NOS
 HV8144
 HV8144                          STATION DESCRIPTION
 HV8144
 HV8144'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (REM)
 HV8144'STATION IS LOCATED ON THE EAST SHORE OF ST JOHN CREEK NORTH OF THE
 HV8144'TOWN OF OLIVET.
 HV8144'
 HV8144'STATION WAS ESTABLISHED BY BOAT.
 HV8144'
 HV8144'THE STATION IS A PK NAIL DRIVEN INTO THE WOOD DECK OF THE PIER
 HV8144'1.340 M (4.39 FT) NORTH FROM THE OFFSHORE EDGE OF PIER,0.957 M
 HV8144'(3.13 FT) EAST FROM EDGE OF PIER AND 2.615 M (8.58 FT) WEST FROM
 HV8144'EDGE OF PIER.
 HV8144'PERMISSION FOR ACCESS TO PROPERTY WAS OBTAINED FROM
 HV8144'MR.H.O.FREDERICK P.O.BOX 383 SOLOMONS,MD 20688 PHONE 326-4205.
 HV8144'
 HV8144'HEIGHT OF LIGHT SHOWN WAS 1.500 METERS ABOVE THE MARK.
 HV8144'
 HV8144'DESCRIBED BY ED MARTIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4608 ***********************************************************************
 JV4608  DESIGNATION -  FREDERICK EVAN LUTH CH W SPIRE
 JV4608  PID         -  JV4608
 JV4608  STATE/COUNTY-  MD/FREDERICK
 JV4608  COUNTRY     -  US
 JV4608  USGS QUAD   -  FREDERICK (2016)
 JV4608
 JV4608                         *CURRENT SURVEY CONTROL
 JV4608  ______________________________________________________________________
 JV4608* NAD 83(1991) POSITION- 39 24 55.46423(N) 077 24 34.36089(W)   ADJUSTED
 JV4608  ______________________________________________________________________
 JV4608  GEOID HEIGHT    -        -32.725 (meters)                     GEOID18
 JV4608  LAPLACE CORR    -          3.48  (seconds)                    DEFLEC18
 JV4608  HORZ ORDER      -  THIRD
 JV4608
 JV4608.The horizontal coordinates were established by classical geodetic methods
 JV4608.and adjusted by the National Geodetic Survey in January 1992.
 JV4608
 JV4608.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4608.GEOID18 height accuracy estimate available here.
 JV4608
 JV4608.Click photographs - Photos may exist for this station.
 JV4608
 JV4608.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4608
 JV4608. The following values were computed from the NAD 83(1991) position.
 JV4608
 JV4608;                    North         East     Units Scale Factor Converg.
 JV4608;SPC MD       -   194,202.107   364,731.323   MT  0.99999413   -0 15 25.4
 JV4608;SPC MD       -   637,144.75  1,196,622.68   sFT  0.99999413   -0 15 25.4
 JV4608;UTM  18      - 4,365,646.705   292,566.840   MT  1.00012981   -1 31 49.6
 JV4608
 JV4608_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9256665646(NAD 83)
 JV4608
 JV4608                          SUPERSEDED SURVEY CONTROL
 JV4608
 JV4608  NAD 83(1986)-  39 24 55.46502(N)    077 24 34.37122(W) AD(       ) 3
 JV4608  NAD 27      -  39 24 55.10000(N)    077 24 35.44000(W) AD(       ) 3
 JV4608
 JV4608.Superseded values are not recommended for survey control.
 JV4608
 JV4608.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4608.See file dsdata.pdf to determine how the superseded data were derived.
 JV4608
 JV4608_MARKER: 90 = CHURCH SPIRE
 JV4608_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4608+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2005
 JV4608
 JV4608  HISTORY     - Date     Condition        Report By
 JV4608  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4608  HISTORY     - 1950     GOOD             LOCENG
 JV4608  HISTORY     - 1983     GOOD             NGS
 JV4608  HISTORY     - 19970808 GOOD             USPSQD
 JV4608  HISTORY     - 20031102 GOOD             USPSQD
 JV4608  HISTORY     - 20050718 GOOD             USPSQD
 JV4608
 JV4608                          STATION DESCRIPTION
 JV4608
 JV4608'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4608'THE STATION IS THE W ONE OF THE TWIN SPIRES ON THE S END OF THE
 JV4608'EVANGELICAL LUTHERAN CHURCH LOCATED ON E CHURCH STREET IN
 JV4608'FREDERICK.  THE SPIRES ARE IDENTICAL IN STRUCTURE, SET ABOUT 40
 JV4608'FEET APART, CONSTRUCTED OF WOOD AND RESTING ON CONCRETE TOWERS.
 JV4608'THE SPIRES ARE ROOFED WITH TIN, PAINTED BROWN, AND EACH IS TOPPED
 JV4608'BY A LONG ORNAMENTAL FINIAL AND WEATHER VANE.  THE CHURCH WAS
 JV4608'BUILT IN 1854.  THE SPIRES ARE ABOUT 100 FEET HIGH.
 JV4608'
 JV4608'IT IS BELIEVED THAT THIS IS THE SAME STATION FREDERICK LUTHERAN
 JV4608'CHURCH 1865 BUT POSITIONS SHOULD BE COMPARED FOR CERTAINTY.
 JV4608
 JV4608                          STATION RECOVERY (1950)
 JV4608
 JV4608'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1950
 JV4608'RECOVERED BY MDDPI.
 JV4608'
 JV4608'RECOVERED IN GOOD CONDITION.
 JV4608
 JV4608                          STATION RECOVERY (1983)
 JV4608
 JV4608'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (DRM)
 JV4608'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV4608'
 JV4608'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN FREDERICK.
 JV4608
 JV4608                          STATION RECOVERY (1997)
 JV4608
 JV4608'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4608'RECOVERED IN GOOD CONDITION.
 JV4608
 JV4608                          STATION RECOVERY (2003)
 JV4608
 JV4608'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4608'RECOVERED IN GOOD CONDITION.
 JV4608
 JV4608                          STATION RECOVERY (2005)
 JV4608
 JV4608'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV4608'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4609 ***********************************************************************
 JV4609  DESIGNATION -  FREDERICK EVAN LUTH CH E SPIRE
 JV4609  PID         -  JV4609
 JV4609  STATE/COUNTY-  MD/FREDERICK
 JV4609  COUNTRY     -  US
 JV4609  USGS QUAD   -  FREDERICK (2016)
 JV4609
 JV4609                         *CURRENT SURVEY CONTROL
 JV4609  ______________________________________________________________________
 JV4609* NAD 83(1991) POSITION- 39 24 55.42169(N) 077 24 33.67620(W)   ADJUSTED
 JV4609  ______________________________________________________________________
 JV4609  GEOID HEIGHT    -        -32.724 (meters)                     GEOID18
 JV4609  LAPLACE CORR    -          3.49  (seconds)                    DEFLEC18
 JV4609  HORZ ORDER      -  THIRD
 JV4609
 JV4609.The horizontal coordinates were established by classical geodetic methods
 JV4609.and adjusted by the National Geodetic Survey in January 1992.
 JV4609
 JV4609.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4609.GEOID18 height accuracy estimate available here.
 JV4609
 JV4609.Click photographs - Photos may exist for this station.
 JV4609
 JV4609.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4609
 JV4609. The following values were computed from the NAD 83(1991) position.
 JV4609
 JV4609;                    North         East     Units Scale Factor Converg.
 JV4609;SPC MD       -   194,200.721   364,747.696   MT  0.99999413   -0 15 24.9
 JV4609;SPC MD       -   637,140.20  1,196,676.40   sFT  0.99999413   -0 15 24.9
 JV4609;UTM  18      - 4,365,644.956   292,583.180   MT  1.00012972   -1 31 49.2
 JV4609
 JV4609_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9258365644(NAD 83)
 JV4609
 JV4609                          SUPERSEDED SURVEY CONTROL
 JV4609
 JV4609  NAD 83(1986)-  39 24 55.42244(N)    077 24 33.68638(W) AD(       ) 3
 JV4609  NAD 27      -  39 24 55.03700(N)    077 24 34.74000(W) AD(       ) 3
 JV4609
 JV4609.Superseded values are not recommended for survey control.
 JV4609
 JV4609.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4609.See file dsdata.pdf to determine how the superseded data were derived.
 JV4609
 JV4609_MARKER: 90 = CHURCH SPIRE
 JV4609_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4609+SATELLITE: SATELLITE OBSERVATIONS - February 25, 2008
 JV4609
 JV4609  HISTORY     - Date     Condition        Report By
 JV4609  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4609  HISTORY     - 1950     GOOD             LOCENG
 JV4609  HISTORY     - 1983     GOOD             NGS
 JV4609  HISTORY     - 19970808 GOOD             USPSQD
 JV4609  HISTORY     - 20031102 GOOD             USPSQD
 JV4609  HISTORY     - 20050718 GOOD             USPSQD
 JV4609  HISTORY     - 20080225 GOOD             GEOCAC
 JV4609
 JV4609                          STATION DESCRIPTION
 JV4609
 JV4609'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4609'THE STATION IS THE E ONE OF THE TWIN SPIRES ON THE S END OF THE
 JV4609'EVANGELICAL LUTHERAN CHURCH LOCATED ON E CHURCH STREET IN
 JV4609'FREDERICK.  THE SPIRES ARE IDENTICAL IN STRUCTURE, SET ABOUT 40
 JV4609'FEET APART, CONSTRUCTED OF WOOD AND RESTING ON CONCRETE TOWERS.
 JV4609'THE SPIRES ARE ROOFED WITH TIN, PAINTED BROWN, AND EACH IS TOPPED
 JV4609'BY A LONG ORNAMENTAL FINIAL AND WEATHER VANE.  THE CHURCH WAS
 JV4609'BUILT IN 1854.  THE SPIRES ARE ABOUT 100 FEET HIGH.
 JV4609'
 JV4609'IT IS BELIEVED THAT THIS IS THE SAME STATION FREDERICK LUTHERAN
 JV4609'CHURCH 1865 BUT POSITIONS SHOULD BE COMPARED FOR CERTAINTY.
 JV4609
 JV4609                          STATION RECOVERY (1950)
 JV4609
 JV4609'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1950
 JV4609'RECOVERED BY MDDPI.
 JV4609'
 JV4609'RECOVERED IN GOOD CONDITION.
 JV4609
 JV4609                          STATION RECOVERY (1983)
 JV4609
 JV4609'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (DRM)
 JV4609'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV4609'
 JV4609'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN FREDERICK.
 JV4609
 JV4609                          STATION RECOVERY (1997)
 JV4609
 JV4609'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4609'RECOVERED IN GOOD CONDITION.
 JV4609
 JV4609                          STATION RECOVERY (2003)
 JV4609
 JV4609'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4609'RECOVERED IN GOOD CONDITION.
 JV4609
 JV4609                          STATION RECOVERY (2005)
 JV4609
 JV4609'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV4609'RECOVERED IN GOOD CONDITION.
 JV4609
 JV4609                          STATION RECOVERY (2008)
 JV4609
 JV4609'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV4609'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4604 ***********************************************************************
 JV4604  DESIGNATION -  FREDERICK MAGNETIC STA
 JV4604  PID         -  JV4604
 JV4604  STATE/COUNTY-  MD/FREDERICK
 JV4604  COUNTRY     -  US
 JV4604  USGS QUAD   -  FREDERICK (2016)
 JV4604
 JV4604                         *CURRENT SURVEY CONTROL
 JV4604  ______________________________________________________________________
 JV4604* NAD 83(1993) POSITION- 39 26 00.38875(N) 077 25 34.17741(W)   ADJUSTED
 JV4604* NAVD 88 ORTHO HEIGHT -   106.78  (+/-2cm)      350.3   (feet) VERTCON3
 JV4604  ______________________________________________________________________
 JV4604  GEOID HEIGHT    -        -32.786 (meters)                     GEOID18
 JV4604  LAPLACE CORR    -          2.68  (seconds)                    DEFLEC18
 JV4604  HORZ ORDER      -  SECOND
 JV4604  VERT ORDER      -  THIRD ? (See Below)
 JV4604
 JV4604.This mark is at Frederick Airport (FDK)
 JV4604
 JV4604.The horizontal coordinates were established by classical geodetic methods
 JV4604.and adjusted by the National Geodetic Survey in November 1994.
 JV4604
 JV4604.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4604.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4604
 JV4604.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4604.GEOID18 height accuracy estimate available here.
 JV4604
 JV4604.The vertical order pertains to the NGVD 29 superseded value.
 JV4604
 JV4604.Click photographs - Photos may exist for this station.
 JV4604
 JV4604.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4604
 JV4604. The following values were computed from the NAD 83(1993) position.
 JV4604
 JV4604;                    North         East     Units Scale Factor Converg.
 JV4604;SPC MD       -   196,210.891   363,309.789   MT  0.99999715   -0 16 02.9
 JV4604;SPC MD       -   643,735.23  1,191,958.87   sFT  0.99999715   -0 16 02.9
 JV4604;UTM  18      - 4,367,686.874   291,190.122   MT  1.00013686   -1 32 29.8
 JV4604
 JV4604!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4604!SPC MD       -   0.99998839  x   0.99999715  =   0.99998554
 JV4604!UTM  18      -   0.99998839  x   1.00013686  =   1.00012525
 JV4604
 JV4604_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9119067686(NAD 83)
 JV4604
 JV4604                          SUPERSEDED SURVEY CONTROL
 JV4604
 JV4604  NAD 83(1991)-  39 26 00.38910(N)    077 25 34.17783(W) AD(       ) 2
 JV4604  NAD 83(1986)-  39 26 00.38942(N)    077 25 34.18691(W) AD(       ) 2
 JV4604  NAD 27      -  39 26 00.02500(N)    077 25 35.24400(W) AD(       ) 2
 JV4604  NGVD 29             107.00   (m)          351.0    (f) LEVELING    3  
 JV4604
 JV4604.Superseded values are not recommended for survey control.
 JV4604
 JV4604.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4604.See file dsdata.pdf to determine how the superseded data were derived.
 JV4604
 JV4604_MARKER: DM = MAGNETIC STATION DISK
 JV4604_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4604_MARK LOGO: CGS
 JV4604_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4604+STABILITY: SURFACE MOTION
 JV4604
 JV4604  HISTORY     - Date     Condition        Report By
 JV4604  HISTORY     - 1939     MONUMENTED       CGS
 JV4604  HISTORY     - 20031102 MARK NOT FOUND   USPSQD
 JV4604
 JV4604                          STATION DESCRIPTION
 JV4604
 JV4604'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4604'STATION IS STANDARD DISK SET IN A CIRCULAR MASS OF CONCRETE 16
 JV4604'INCHES IN DIAMETER AND PROJECTING 2 INCHES ABOVE ROAD BED.  IT IS
 JV4604'ON THE E SIDE OF THE AIRPORT, 5 FEET W OF THE E EDGE OF THE ROAD,
 JV4604'25 FEET E OF THE W EDGE OF THE ROAD AND 90 FEET NW OF THE NW
 JV4604'CORNER OF HOUSE OWNED BY MR. JOSEPH KLINE.  MARK IS IN GOOD
 JV4604'CONDITION.
 JV4604'
 JV4604'IT IS 157.707 METERS S OF STATION FREDERICK.
 JV4604
 JV4604                          STATION RECOVERY (2003)
 JV4604
 JV4604'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4604'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4600 ***********************************************************************
 JV4600  DESIGNATION -  FREDERICK MD SCH FOR DEAF FIN
 JV4600  PID         -  JV4600
 JV4600  STATE/COUNTY-  MD/FREDERICK
 JV4600  COUNTRY     -  US
 JV4600  USGS QUAD   -  FREDERICK (2016)
 JV4600
 JV4600                         *CURRENT SURVEY CONTROL
 JV4600  ______________________________________________________________________
 JV4600* NAD 83(1993) POSITION- 39 24 31.11478(N) 077 24 37.83614(W)   ADJUSTED
 JV4600  ______________________________________________________________________
 JV4600  GEOID HEIGHT    -        -32.711 (meters)                     GEOID18
 JV4600  LAPLACE CORR    -          3.57  (seconds)                    DEFLEC18
 JV4600  HORZ ORDER      -  THIRD
 JV4600
 JV4600.The horizontal coordinates were established by classical geodetic methods
 JV4600.and adjusted by the National Geodetic Survey in November 1994.
 JV4600
 JV4600.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4600.GEOID18 height accuracy estimate available here.
 JV4600
 JV4600.Click photographs - Photos may exist for this station.
 JV4600
 JV4600.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4600
 JV4600. The following values were computed from the NAD 83(1993) position.
 JV4600
 JV4600;                    North         East     Units Scale Factor Converg.
 JV4600;SPC MD       -   193,451.560   364,644.814   MT  0.99999303   -0 15 27.5
 JV4600;SPC MD       -   634,682.33  1,196,338.86   sFT  0.99999303   -0 15 27.5
 JV4600;UTM  18      - 4,364,898.164   292,463.660   MT  1.00013034   -1 31 51.1
 JV4600
 JV4600_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9246364898(NAD 83)
 JV4600
 JV4600                          SUPERSEDED SURVEY CONTROL
 JV4600
 JV4600  NAD 83(1991)-  39 24 31.11433(N)    077 24 37.83617(W) AD(       ) 3
 JV4600  NAD 83(1986)-  39 24 31.11482(N)    077 24 37.84659(W) AD(       ) 3
 JV4600  NAD 27      -  39 24 30.74400(N)    077 24 38.90600(W) AD(       ) 3
 JV4600
 JV4600.Superseded values are not recommended for survey control.
 JV4600
 JV4600.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4600.See file dsdata.pdf to determine how the superseded data were derived.
 JV4600
 JV4600_MARKER: 86 = CUPOLA
 JV4600_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4600+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2005
 JV4600
 JV4600  HISTORY     - Date     Condition        Report By
 JV4600  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4600  HISTORY     - 1983     GOOD             NGS
 JV4600  HISTORY     - 19970808 GOOD             USPSQD
 JV4600  HISTORY     - 20031102 GOOD             USPSQD
 JV4600  HISTORY     - 20050718 GOOD             USPSQD
 JV4600
 JV4600                          STATION DESCRIPTION
 JV4600
 JV4600'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4600'THE STATION IS THE FINIAL ON THE CUPOLA ON THE MAIN BUILDING OF
 JV4600'THE MARYLAND STATE SCHOOL FOR THE DEAF LOCATED ON S MARKET STREET,
 JV4600'0.3 MILE W OF THE CENTER OF FREDERICK.  THE CUPOLA IS MADE OF WOOD
 JV4600'AND RESTS ON A LOW BRICK TOWER.  IT IS ABOUT 20 FEET HIGH, PAINTED
 JV4600'WHITE, AND HAS A CONICAL-SHAPED ROOF WITH WEATHER VANE ON THE
 JV4600'FINIAL.
 JV4600
 JV4600                          STATION RECOVERY (1983)
 JV4600
 JV4600'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (DRM)
 JV4600'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV4600'
 JV4600'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN FREDERICK.
 JV4600
 JV4600                          STATION RECOVERY (1997)
 JV4600
 JV4600'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4600'RECOVERED IN GOOD CONDITION.
 JV4600
 JV4600                          STATION RECOVERY (2003)
 JV4600
 JV4600'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4600'RECOVERED IN GOOD CONDITION.
 JV4600
 JV4600                          STATION RECOVERY (2005)
 JV4600
 JV4600'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV4600'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4598 ***********************************************************************
 JV4598  DESIGNATION -  FREDERICK MUNICIPAL TANK
 JV4598  PID         -  JV4598
 JV4598  STATE/COUNTY-  MD/FREDERICK
 JV4598  COUNTRY     -  US
 JV4598  USGS QUAD   -  FREDERICK (2016)
 JV4598
 JV4598                         *CURRENT SURVEY CONTROL
 JV4598  ______________________________________________________________________
 JV4598* NAD 83(1993) POSITION- 39 24 36.55030(N) 077 24 30.76032(W)   ADJUSTED
 JV4598  ______________________________________________________________________
 JV4598  GEOID HEIGHT    -        -32.711 (meters)                     GEOID18
 JV4598  LAPLACE CORR    -          3.63  (seconds)                    DEFLEC18
 JV4598  HORZ ORDER      -  THIRD
 JV4598
 JV4598.The horizontal coordinates were established by classical geodetic methods
 JV4598.and adjusted by the National Geodetic Survey in November 1994.
 JV4598
 JV4598.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4598.GEOID18 height accuracy estimate available here.
 JV4598
 JV4598.Click photographs - Photos may exist for this station.
 JV4598
 JV4598.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4598
 JV4598. The following values were computed from the NAD 83(1993) position.
 JV4598
 JV4598;                    North         East     Units Scale Factor Converg.
 JV4598;SPC MD       -   193,618.428   364,814.842   MT  0.99999327   -0 15 23.1
 JV4598;SPC MD       -   635,229.79  1,196,896.69   sFT  0.99999327   -0 15 23.1
 JV4598;UTM  18      - 4,365,061.235   292,637.378   MT  1.00012945   -1 31 46.7
 JV4598
 JV4598_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9263765061(NAD 83)
 JV4598
 JV4598                          SUPERSEDED SURVEY CONTROL
 JV4598
 JV4598  NAD 83(1991)-  39 24 36.54919(N)    077 24 30.75877(W) AD(       ) 3
 JV4598  NAD 83(1986)-  39 24 36.54942(N)    077 24 30.77021(W) AD(       ) 3
 JV4598  NAD 27      -  39 24 36.18000(N)    077 24 31.81400(W) AD(       ) 3
 JV4598
 JV4598.Superseded values are not recommended for survey control.
 JV4598
 JV4598.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4598.See file dsdata.pdf to determine how the superseded data were derived.
 JV4598
 JV4598_MARKER: 53 = ELEVATED TANK
 JV4598_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4598+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2005
 JV4598
 JV4598  HISTORY     - Date     Condition        Report By
 JV4598  HISTORY     - 1958     FIRST OBSERVED   CGS
 JV4598  HISTORY     - 1971     GOOD             NGS
 JV4598  HISTORY     - 1983     GOOD             NGS
 JV4598  HISTORY     - 19970808 GOOD             USPSQD
 JV4598  HISTORY     - 20031102 GOOD             USPSQD
 JV4598  HISTORY     - 20050718 GOOD             USPSQD
 JV4598
 JV4598                          STATION DESCRIPTION
 JV4598
 JV4598'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4598'STATION IS A LARGE, ELEVATED, SILVER COLORED TANK WITH A SMALL
 JV4598'DOME SHAPED FINIAL AT THE CENTER.  A ROD SUPPORTED RED LIGHT IS
 JV4598'ECCENTRIC TO THE CENTER OF THE DOME SHAPED FINIAL.  THE TANK IS
 JV4598'ABOUT 160 FEET HIGH.
 JV4598'
 JV4598'STATION IS LOCATED IN FREDERICK, THREE BLOCKS SOUTH OF THE
 JV4598'POSTOFFICE.
 JV4598
 JV4598                          STATION RECOVERY (1971)
 JV4598
 JV4598'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV4598'STATION IS A LARGE, ELEVATED, SILVER COLORED TANK WITH A SMALL
 JV4598'DOME SHAPED FINIAL AT THE CENTER.  A ROD SUPPORTED RED LIGHT IS
 JV4598'ECCENTRIC TO THE CENTER OF THE DOME SHAPED FINIAL.  THE TANK HAS
 JV4598'AN OVERALL HEIGHT OF 150 FEET.
 JV4598'
 JV4598'IT IS LOCATED IN THE EASTERN PART OF FREDERICK, THREE BLOCKS
 JV4598'NORTH OF THE POST OFFICE AND ON THE SOUTHWEST SIDE OF CARROLL
 JV4598'ST.  IT IS REFERRED TO AS THE CARROLL ST. TANK, AND IS BETWEEN
 JV4598'URNER ST. AND E. SOUTH ST., 100 FEET SOUTHEAST OF E. SOUTH ST. AND
 JV4598'70 FEET SOUTH OF S. CARROLL ST.
 JV4598
 JV4598                          STATION RECOVERY (1983)
 JV4598
 JV4598'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (DRM)
 JV4598'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV4598'
 JV4598'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN FREDERICK.
 JV4598
 JV4598                          STATION RECOVERY (1997)
 JV4598
 JV4598'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4598'RECOVERED IN GOOD CONDITION.
 JV4598
 JV4598                          STATION RECOVERY (2003)
 JV4598
 JV4598'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4598'RECOVERED IN GOOD CONDITION.
 JV4598
 JV4598                          STATION RECOVERY (2005)
 JV4598
 JV4598'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV4598'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2530 ***********************************************************************
 JV2530  DESIGNATION -  FREDERICK RM 2
 JV2530  PID         -  JV2530
 JV2530  STATE/COUNTY-  MD/FREDERICK
 JV2530  COUNTRY     -  US
 JV2530  USGS QUAD   -  FREDERICK (2016)
 JV2530
 JV2530                         *CURRENT SURVEY CONTROL
 JV2530  ______________________________________________________________________
 JV2530* NAD 83(1986) POSITION- 39 26 03.79   (N) 077 25 30.33   (W)   HD_HELD1
 JV2530* NAVD 88 ORTHO HEIGHT -   109.096 (meters)      357.93  (feet) ADJUSTED
 JV2530  ______________________________________________________________________
 JV2530  GEOID HEIGHT    -        -32.787 (meters)                     GEOID18
 JV2530  DYNAMIC HEIGHT  -        109.038 (meters)      357.74  (feet) COMP
 JV2530  MODELED GRAVITY -    980,089.9   (mgal)                       NAVD 88
 JV2530
 JV2530  VERT ORDER      -  SECOND    CLASS 0
 JV2530
 JV2530.This mark is at Frederick Airport (FDK)
 JV2530
 JV2530.The horizontal coordinates were determined by differentially corrected
 JV2530.hand held GPS observations or other comparable positioning techniques
 JV2530.and have an estimated accuracy of +/- 3 meters.
 JV2530
 JV2530.The orthometric height was determined by differential leveling and
 JV2530.adjusted by the NATIONAL GEODETIC SURVEY
 JV2530.in June 1991.
 JV2530
 JV2530.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2530.GEOID18 height accuracy estimate available here.
 JV2530
 JV2530.Click photographs - Photos may exist for this station.
 JV2530
 JV2530.The dynamic height is computed by dividing the NAVD 88
 JV2530.geopotential number by the normal gravity value computed on the
 JV2530.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2530.degrees latitude (g = 980.6199 gals.).
 JV2530
 JV2530.The modeled gravity was interpolated from observed gravity values.
 JV2530
 JV2530;                    North         East    Units  Estimated Accuracy
 JV2530;SPC MD       -   196,315.4     363,402.3     MT  (+/- 3 meters HH1 GPS) 
 JV2530
 JV2530_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9128467789(NAD 83)
 JV2530
 JV2530                          SUPERSEDED SURVEY CONTROL
 JV2530
 JV2530  NGVD 29 (11/26/84)  109.315  (m)          358.64   (f) ADJUSTED    2 0
 JV2530
 JV2530.Superseded values are not recommended for survey control.
 JV2530
 JV2530.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2530.See file dsdata.pdf to determine how the superseded data were derived.
 JV2530
 JV2530_MARKER: DR = REFERENCE MARK DISK
 JV2530_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV2530_SP_SET: STEP
 JV2530_STAMPING: FREDERICK NO 2 1939
 JV2530_MARK LOGO: CGS
 JV2530_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2530
 JV2530  HISTORY     - Date     Condition        Report By
 JV2530  HISTORY     - 1939     MONUMENTED       CGS
 JV2530
 JV2530                          STATION DESCRIPTION
 JV2530
 JV2530'DESCRIBED BY COAST AND GEODETIC SURVEY 1939
 JV2530'1.8 MI NW FROM FREDERICK.
 JV2530'ABOUT 1.8 MILES NORTHWEST OF THE CITY OPERA HOUSE AT FREDERICK,
 JV2530'FREDERICK COUNTY, AT THE SOUTHEAST CORNER OF FREDERICK
 JV2530'AIRPORT, 78.3 FEET SOUTHWEST OF TRIANGULATION STATION FREDERICK,
 JV2530'DESCRIBED BELOW, 77 FEET WEST OF THE CENTER LINE OF SEVENTH
 JV2530'AVENUE, AT THE ENTRANCE TO THE AIRWAY BEACON SWITCH HOUSE, IN
 JV2530'THE TOP OF THE CONCRETE STEP, AND 10.7 FEET SOUTHEAST OF THE
 JV2530'SOUTHEAST LEG OF THE AIRWAY BEACON TOWER.  A STANDARD
 JV2530'REFERENCE-MARK DISK, STAMPED FREDERICK NO 2 1939.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4610 ***********************************************************************
 JV4610  DESIGNATION -  FREDERICK ST JOHNS CATHOLIC CH
 JV4610  PID         -  JV4610
 JV4610  STATE/COUNTY-  MD/FREDERICK
 JV4610  COUNTRY     -  US
 JV4610  USGS QUAD   -  FREDERICK (2016)
 JV4610
 JV4610                         *CURRENT SURVEY CONTROL
 JV4610  ______________________________________________________________________
 JV4610* NAD 83(1991) POSITION- 39 24 57.08492(N) 077 24 27.64783(W)   ADJUSTED
 JV4610  ______________________________________________________________________
 JV4610  GEOID HEIGHT    -        -32.722 (meters)                     GEOID18
 JV4610  LAPLACE CORR    -          3.55  (seconds)                    DEFLEC18
 JV4610  HORZ ORDER      -  THIRD
 JV4610
 JV4610.The horizontal coordinates were established by classical geodetic methods
 JV4610.and adjusted by the National Geodetic Survey in January 1992.
 JV4610
 JV4610.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4610.GEOID18 height accuracy estimate available here.
 JV4610
 JV4610.Click photographs - Photos may exist for this station.
 JV4610
 JV4610.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4610
 JV4610. The following values were computed from the NAD 83(1991) position.
 JV4610
 JV4610;                    North         East     Units Scale Factor Converg.
 JV4610;SPC MD       -   194,251.369   364,892.130   MT  0.99999421   -0 15 21.1
 JV4610;SPC MD       -   637,306.37  1,197,150.26   sFT  0.99999421   -0 15 21.1
 JV4610;UTM  18      - 4,365,692.388   292,728.724   MT  1.00012898   -1 31 45.4
 JV4610
 JV4610_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9272865692(NAD 83)
 JV4610
 JV4610                          SUPERSEDED SURVEY CONTROL
 JV4610
 JV4610  NAD 83(1986)-  39 24 57.08541(N)    077 24 27.65789(W) AD(       ) 3
 JV4610  NAD 27      -  39 24 56.71800(N)    077 24 28.71600(W) AD(       ) 3
 JV4610
 JV4610.Superseded values are not recommended for survey control.
 JV4610
 JV4610.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4610.See file dsdata.pdf to determine how the superseded data were derived.
 JV4610
 JV4610_MARKER: 91 = CHURCH CROSS
 JV4610_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4610+SATELLITE: SATELLITE OBSERVATIONS - February 25, 2008
 JV4610
 JV4610  HISTORY     - Date     Condition        Report By
 JV4610  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4610  HISTORY     - 1983     GOOD             NGS
 JV4610  HISTORY     - 19970808 GOOD             USPSQD
 JV4610  HISTORY     - 20031102 GOOD             USPSQD
 JV4610  HISTORY     - 20050718 GOOD             USPSQD
 JV4610  HISTORY     - 20080225 GOOD             GEOCAC
 JV4610
 JV4610                          STATION DESCRIPTION
 JV4610
 JV4610'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4610'THE STATION IS MARKED BY A FIVE-FOOT GILDED CROSS AT THE TOP OF A
 JV4610'CLOCK TOWER ON THE S END OF THE ST. JOHNS CATHOLIC CHURCH LOCATED
 JV4610'IN E SECOND STREET IN THE CITY OF FREDERICK.  THE CLOCK TOWER IS
 JV4610'APPROXIMATELY 120 FEET HIGH AND IS COVERED BY A ROUND GILDED DOME
 JV4610'ON TOP OF WHICH IS THE CROSS.  THE TOWER IS VERY CONSPICUOUS AND
 JV4610'IS VISIBLE FROM ALL DIRECTIONS.
 JV4610'
 JV4610'IT IS BELIEVED THAT THIS IS THE SAME STATION AS FREDERICK ROMAN
 JV4610'CATHOLIC CHURCH 1865 BUT POSITIONS SHOULD BE COMPARED FOR CERTAINTY.
 JV4610
 JV4610                          STATION RECOVERY (1983)
 JV4610
 JV4610'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (DRM)
 JV4610'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV4610'
 JV4610'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN FREDERICK.
 JV4610
 JV4610                          STATION RECOVERY (1997)
 JV4610
 JV4610'RECOVERY NOTE BY US POWER SQUADRON 1997
 JV4610'RECOVERED IN GOOD CONDITION.
 JV4610
 JV4610                          STATION RECOVERY (2003)
 JV4610
 JV4610'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4610'RECOVERED IN GOOD CONDITION.
 JV4610
 JV4610                          STATION RECOVERY (2005)
 JV4610
 JV4610'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV4610'RECOVERED IN GOOD CONDITION.
 JV4610
 JV4610                          STATION RECOVERY (2008)
 JV4610
 JV4610'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV4610'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1570 ***********************************************************************
 HU1570  DESIGNATION -  FREEMAN
 HU1570  PID         -  HU1570
 HU1570  STATE/COUNTY-  MD/WORCESTER
 HU1570  COUNTRY     -  US
 HU1570  USGS QUAD   -  WHITTINGTON POINT (2016)
 HU1570
 HU1570                         *CURRENT SURVEY CONTROL
 HU1570  ______________________________________________________________________
 HU1570* NAD 83(1993) POSITION- 38 03 52.93542(N) 075 13 04.63258(W)   ADJUSTED
 HU1570* NAVD 88 ORTHO HEIGHT -     1.2   (meters)        4.    (feet) VERTCON3
 HU1570  ______________________________________________________________________
 HU1570  GEOID HEIGHT    -        -36.381 (meters)                     GEOID18
 HU1570  LAPLACE CORR    -          0.71  (seconds)                    DEFLEC18
 HU1570  HORZ ORDER      -  SECOND
 HU1570
 HU1570.The horizontal coordinates were established by classical geodetic methods
 HU1570.and adjusted by the National Geodetic Survey in November 1994.
 HU1570
 HU1570.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1570.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1570
 HU1570.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1570.GEOID18 height accuracy estimate available here.
 HU1570
 HU1570.Click photographs - Photos may exist for this station.
 HU1570
 HU1570.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1570
 HU1570. The following values were computed from the NAD 83(1993) position.
 HU1570
 HU1570;                    North         East     Units Scale Factor Converg.
 HU1570;SPC MD       -    45,710.855   556,381.676   MT  1.00004926   +1 07 06.5
 HU1570;SPC MD       -   149,969.70  1,825,395.55   sFT  1.00004926   +1 07 06.5
 HU1570;SPC VA S     - 1,197,153.784 3,787,964.313   MT  1.00001936   +1 59 31.0
 HU1570;SPC VA S     - 3,927,662.04 12,427,679.58   sFT  1.00001936   +1 59 31.0
 HU1570;UTM  18      - 4,213,016.555   480,881.080   MT  0.99960450   -0 08 03.8
 HU1570
 HU1570!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1570!SPC MD       -   1.00000553  x   1.00004926  =   1.00005479
 HU1570!SPC VA S     -   1.00000553  x   1.00001936  =   1.00002489
 HU1570!UTM  18      -   1.00000553  x   0.99960450  =   0.99961002
 HU1570
 HU1570:                Primary Azimuth Mark                     Grid Az
 HU1570:SPC MD       -  BOUNDARY MON POPE IS CG                  209 25 34.4
 HU1570:SPC VA S     -  BOUNDARY MON POPE IS CG                  208 33 09.9
 HU1570:UTM  18      -  BOUNDARY MON POPE IS CG                  210 40 44.7
 HU1570
 HU1570_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8088113016(NAD 83)
 HU1570
 HU1570|---------------------------------------------------------------------|
 HU1570| PID    Reference Object                     Distance      Geod. Az  |
 HU1570|                                                           dddmmss.s |
 HU1570| DC5925 FREEMAN RM 1                         25.650 METERS 11014     |
 HU1570| DC7318 FREEMAN AZ MK                                      2075340.5 |
 HU1570| HU1567 BOUNDARY MON POPE IS CG             APPROX. 4.9 KM 2103240.9 |
 HU1570| DC5926 FREEMAN RM 2                         18.178 METERS 32653     |
 HU1570|---------------------------------------------------------------------|
 HU1570
 HU1570                          SUPERSEDED SURVEY CONTROL
 HU1570
 HU1570  NAD 83(1991)-  38 03 52.93374(N)    075 13 04.63291(W) AD(       ) 2
 HU1570  NAD 83(1986)-  38 03 52.92558(N)    075 13 04.67063(W) AD(       ) 2
 HU1570  NAD 27      -  38 03 52.49066(N)    075 13 05.98966(W) AD(       ) 2
 HU1570  NGVD 29 (07/19/86)    1.4    (m)            5.     (f) VERT ANG       
 HU1570
 HU1570.Superseded values are not recommended for survey control.
 HU1570
 HU1570.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1570.See file dsdata.pdf to determine how the superseded data were derived.
 HU1570
 HU1570_MARKER: DS = TRIANGULATION STATION DISK
 HU1570_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 HU1570+WITH SETTING: INFORMATION.
 HU1570_STAMPING: FREEMAN 1962
 HU1570_MARK LOGO: CGS
 HU1570_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1570
 HU1570  HISTORY     - Date     Condition        Report By
 HU1570  HISTORY     - 1962     MONUMENTED       CGS
 HU1570  HISTORY     - 1975     GOOD             NGS
 HU1570  HISTORY     - 20140424 MARK NOT FOUND   ARCSHE
 HU1570
 HU1570                          STATION DESCRIPTION
 HU1570
 HU1570'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1570'THE STATION IS LOCATED ON ASSATEAGUE ISLAND, ABOUT 9.5 MILES
 HU1570'NORTHEAST OF GREENBACKVILLE, VIRGINIA, 11 MILES NORTH-NORTHEAST
 HU1570'OF ASSATEAGUE LIGHT HOUSE, 12.5 MILES NORTHEAST OF CHINCOTEAGUE.
 HU1570'
 HU1570'TO REACH THE STATION FROM THE EAST END OF THE OCEAN BEACH FERRY
 HU1570'SLIP, GO EAST FOR 0.3 MILE TO THE BEACH, TURN RIGHT AND GO
 HU1570'SOUTHERLY ALONG THE BEACH FOR 10.5 MILES TO A WHITE BEACH-HOUSE
 HU1570'ON THE RIGHT WITH RED SHUTTERS, AND THE STATION ON THE RIGHT.
 HU1570'
 HU1570'THE STATION IS A STANDARD DISK STAMPED FREEMAN 1962, SET IN THE
 HU1570'TOP OF A 5/8 INCH COPPER ROD, PROJECTING 5 INCHES FROM THE
 HU1570'GROUND.  IT IS 2.5 FEET SOUTHWEST OF A STANDARD METAL WITNESS
 HU1570'POST.  96.0 FEET WEST OF A TELEPHONE POLE.  115.0 FEET EAST OF
 HU1570'A POWERLINE-POLE NUMBER 397-1 CREA CO-OP Q.
 HU1570'
 HU1570'REFERENCE MARK NO. 1 IS A STANDARD DISK STAMPED FREEMAN NO. 1
 HU1570'1962, SET IN THE TOP OF A 5/8 INCH COPPER ROD, PROJECTING 4 INCHES
 HU1570'FROM THE GROUND.  IT IS 22.5 FEET NORTHWEST OF A TELEPHONE
 HU1570'POLE.  1.0 FEET WEST OF A STANDARD METAL WITNESS POST.
 HU1570'
 HU1570'REFERENCE MARK NO. 2 IS A STANDARD DISK STAMPED FREEMAN NO. 2
 HU1570'1962, SET IN THE TOP OF A 5/8 INCH COPPER ROD, PROJECTING 5 INCHES
 HU1570'FROM THE GROUND.  IT IS 0.7 FEET EAST OF A STANDARD METAL WITNESS
 HU1570'POST.  73.0 FEET NORTHEAST OF A POWERLINE-POLE NUMBER 397-1 REA
 HU1570'CO-OP Q.
 HU1570'
 HU1570'AZIMUTH MARK IS A STANDARD DISK STAMPED FREEMAN AZIMUTH 1962,
 HU1570'SET IN THE TOP OF A 5/8 INCH COPPER ROD, PROJECTING 6 INCH FROM
 HU1570'THE GROUND.  IT IS 6.0 FEET SOUTHWEST OF A STANDARD METAL WITNESS
 HU1570'POST.  25.0 FEET WEST OF A TELEPHONE POLE.
 HU1570
 HU1570                          STATION RECOVERY (1975)
 HU1570
 HU1570'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (EAB)
 HU1570'THE STATION MARK WAS RECOVERED AND IT WAS FOUND TO BE IN GOOD
 HU1570'CONDITION.  THIS MARK WAS FOUND TO BE 158.8 FEET WEST NORTHWEST
 HU1570'OF POWER POLE Q 397, 130.5 FEET WEST OF THE CENTER LINE OF THE
 HU1570'SAND TRACK ROAD, 2.5 FEET WEST SOUTHWEST OF THE STEEL WITNESS
 HU1570'POST AND ABOUT FLUSH WITH THE GROUND LEVEL.
 HU1570'
 HU1570'REFERENCE MARK NO 2 WAS RECOVERED AND IT WAS FOUND TO BE IN GOOD
 HU1570'CONDITION.  THIS MARK WAS FOUND TO BE 215 FEET WEST NORTHWEST OF
 HU1570'POWER POLE Q 397, 184 FEET WEST OF THE CENTER LINE OF THE SAND
 HU1570'TRACK ROAD, 8 INCHES SOUTHEAST OF THE STEEL WITNESS POST AND 3.5
 HU1570'FEET BELOW THE SAND LEVEL.
 HU1570'
 HU1570'REFERENCE MARK NO 1 AND THE AZIMUTH MARK WERE NOT RECOVERED AT
 HU1570'THIS TIME.
 HU1570'
 HU1570'THIS STATION SITE IS ON PROPERTY OWNED BY THE U.S. GOVERNMENT
 HU1570'AND IT IS MANAGED BY THE ASSATEAGUE NATIONAL SEASHORE AND PARK
 HU1570'SERVICE.  THIS OFFICE IS LOCATED ABOUT 13 MILES NORTH NORTHWEST
 HU1570'OF THE STATION SITE.  PERMISSION IS REQUIRED AND PERHAPS A KEY
 HU1570'WILL BE NEEDED.
 HU1570'
 HU1570'TO REACH THE STATION FROM ABOUT 6 MILES SOUTHEAST OF THE TOWN OF
 HU1570'BERLIN, AT THE ASSATEAGUE ISLAND NATIONAL SEASHORE AND PARK
 HU1570'SERVICE OFFICE, GO SOUTHEAST FOLLOWING STATE ROAD 611 AND OVER A
 HU1570'CONCRETE BRIDGE OVER THE SINEPUXENT BAY INLET FOR 1.2 MILES TO
 HU1570'A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHERLY FOR 2.6
 HU1570'MILES TO A RANGER GUARD SHELTER IN THE CENTER OF THE ROAD.  FROM
 HU1570'HERE ON A FOUR WHEEL DRIVE VEHICLE SHOULD BE USED.  CONTINUE ON
 HU1570'SOUTHERLY FOR 8.7 MILES TO WHERE TWO PILLARS ARE ON EACH SIDE
 HU1570'OF THE SAND TRACK ROAD.  THIS IS ABOUT 0.25 MILE SOUTH OF
 HU1570'STATION GREEN RUN 1958.  CONTINUE ON SOUTHERLY FOR 2.1 MILES
 HU1570'TO THE STATION SITE ON THE RIGHT AND POWER POLE NUMBER
 HU1570'Q-397 ON THE LEFT.
 HU1570
 HU1570                          STATION RECOVERY (2014)
 HU1570
 HU1570'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HU1570'THE STATION WAS NOT FOUND.  REFERENCE MARK 1 WAS FOUND DESTROYED.
 HU1570'REFERENCE MARK 2 WAS FOUND IN GOOD CONDITION.  THE AZIMUTH MARK WAS
 HU1570'NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6760 ***********************************************************************
 JV6760  DESIGNATION -  FREY
 JV6760  PID         -  JV6760
 JV6760  STATE/COUNTY-  MD/HARFORD
 JV6760  COUNTRY     -  US
 JV6760  USGS QUAD   -  EDGEWOOD (2016)
 JV6760
 JV6760                         *CURRENT SURVEY CONTROL
 JV6760  ______________________________________________________________________
 JV6760* NAD 83(2011) POSITION- 39 26 09.27484(N) 076 16 08.51800(W)   ADJUSTED
 JV6760* NAD 83(2011) ELLIP HT-   -19.369 (meters)        (06/27/12)   ADJUSTED
 JV6760* NAD 83(2011) EPOCH   -  2010.00
 JV6760* NAVD 88 ORTHO HEIGHT -    13.8   (meters)       45.    (feet) GPS OBS
 JV6760  ______________________________________________________________________
 JV6760  NAVD 88 orthometric height was determined with an earlier geoid model
 JV6760  GEOID HEIGHT    -        -33.144 (meters)                     GEOID18
 JV6760  NAD 83(2011) X  -  1,170,844.835 (meters)                     COMP
 JV6760  NAD 83(2011) Y  - -4,791,741.764 (meters)                     COMP
 JV6760  NAD 83(2011) Z  -  4,029,798.121 (meters)                     COMP
 JV6760  LAPLACE CORR    -         -2.47  (seconds)                    DEFLEC18
 JV6760
 JV6760  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6760  Standards:
 JV6760         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6760            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6760  -------------------------------------------------------------------
 JV6760  NETWORK    0.98   1.72           0.43   0.36   0.88      0.17233833
 JV6760  -------------------------------------------------------------------
 JV6760  Click here for local accuracies and other accuracy information.
 JV6760
 JV6760.The horizontal coordinates were established by GPS observations
 JV6760.and adjusted by the National Geodetic Survey in June 2012.
 JV6760
 JV6760.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6760.been affixed to the stable North American tectonic plate. See 
 JV6760.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6760
 JV6760.The horizontal coordinates are valid at the epoch date displayed above
 JV6760.which is a decimal equivalence of Year/Month/Day.
 JV6760
 JV6760.The orthometric height was determined by GPS observations and a
 JV6760.high-resolution geoid model.
 JV6760
 JV6760.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6760.GEOID18 height accuracy estimate available here.
 JV6760
 JV6760.Click photographs - Photos may exist for this station.
 JV6760
 JV6760.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6760
 JV6760.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6760
 JV6760.The ellipsoidal height was determined by GPS observations
 JV6760.and is referenced to NAD 83.
 JV6760
 JV6760. The following values were computed from the NAD 83(2011) position.
 JV6760
 JV6760;                    North         East     Units Scale Factor Converg.
 JV6760;SPC MD       -   196,651.244   462,929.868   MT  0.99999757   +0 27 31.6
 JV6760;SPC MD       -   645,179.96  1,518,795.74   sFT  0.99999757   +0 27 31.6
 JV6760;UTM  18      - 4,365,920.098   390,787.930   MT  0.99974685   -0 48 22.3
 JV6760
 JV6760!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6760!SPC MD       -   1.00000304  x   0.99999757  =   1.00000061
 JV6760!UTM  18      -   1.00000304  x   0.99974685  =   0.99974989
 JV6760
 JV6760_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9078765920(NAD 83)
 JV6760
 JV6760|---------------------------------------------------------------------|
 JV6760| PID    Reference Object                     Distance      Geod. Az  |
 JV6760|                                                           dddmmss.s |
 JV6760| JV6761 FREY AZ MK                          358.768 METERS 04326     |
 JV6760|---------------------------------------------------------------------|
 JV6760
 JV6760                          SUPERSEDED SURVEY CONTROL
 JV6760
 JV6760  NAD 83(2007)-  39 26 09.27501(N)    076 16 08.51873(W) AD(2002.00) 0
 JV6760  ELLIP H (02/10/07)  -19.349  (m)                       GP(2002.00)    
 JV6760  ELLIP H (08/30/02)  -19.344  (m)                       GP(       ) 4 2
 JV6760  ELLIP H (08/17/94)  -19.378  (m)                       GP(       ) 4 1
 JV6760  ELLIP H (12/03/93)  -19.390  (m)                       GP(       ) 4 1
 JV6760  NAD 83(1991)-  39 26 09.27419(N)    076 16 08.51860(W) AD(       ) 1
 JV6760  ELLIP H (01/27/92)  -19.394  (m)                       GP(       ) 4 1
 JV6760  NAD 83(1986)-  39 26 09.26831(N)    076 16 08.52534(W) AD(       ) 1
 JV6760  NGVD 29 (06/18/91)   14.0    (m)  UNKNOWN  model used  GPS OBS        
 JV6760
 JV6760.Superseded values are not recommended for survey control.
 JV6760
 JV6760.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6760.See file dsdata.pdf to determine how the superseded data were derived.
 JV6760
 JV6760_MARKER: DD = SURVEY DISK
 JV6760_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6760_STAMPING: 130 FREY 1989
 JV6760_MARK LOGO: MD-025
 JV6760_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6760_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6760+STABILITY: SURFACE MOTION
 JV6760_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6760+SATELLITE: SATELLITE OBSERVATIONS - May 05, 2001
 JV6760
 JV6760  HISTORY     - Date     Condition        Report By
 JV6760  HISTORY     - 1989     MONUMENTED       RDA
 JV6760  HISTORY     - 19930511 GOOD             NGS
 JV6760  HISTORY     - 19931209 GOOD             GEOMET
 JV6760  HISTORY     - 20010505 GOOD             USPSQD
 JV6760
 JV6760                          STATION DESCRIPTION
 JV6760
 JV6760'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6760'THE STATION IS LOCATED IN SOUTHWESTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6760'1.5 MILES NORTHEAST OF THE VILLAGE OF EDGEWOOD ON FREYS ROAD.
 JV6760'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV6760'STATE HIGHWAY 755, EDGEWOOD ROAD, PROCEED SOUTH ALONG EDGEWOOD ROAD
 JV6760'1.1 MILES TO ITS INTERSECTION WITH WILLOUGHBY BEACH ROAD.  TURN LEFT
 JV6760'ON WILLOUGHBY BEACH ROAD AND PROCEED EAST 1.45 MILES TO A BEND IN THE
 JV6760'ROAD AT ITS INTERSECTION WITH FREYS ROAD.  TURN LEFT ON FREYS ROAD AND
 JV6760'PROCEED NORTHEAST 0.25 MILE TO THE STATION ON THE RIGHT.
 JV6760'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6760'ABOUT 1 INCH BELOW GROUND STAMPED 130 FREY 1989.  THE STATION IS 71.1
 JV6760'FEET SOUTHWEST FROM G AND E POLE NUMBER 105888, 85.7 FEET NORTHEAST
 JV6760'FROM G AND E POLE NUMBER 832375, AND 13.3 FEET SOUTHEAST FROM THE
 JV6760'SOUTHEAST EDGE OF PAVEMENT OF FREYS ROAD.
 JV6760
 JV6760                          STATION RECOVERY (1993)
 JV6760
 JV6760'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1993
 JV6760'RECOVERED IN GOOD CONDITION.
 JV6760
 JV6760                          STATION RECOVERY (1993)
 JV6760
 JV6760'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6760'RECOVERED IN GOOD CONDITION.
 JV6760
 JV6760                          STATION RECOVERY (2001)
 JV6760
 JV6760'RECOVERY NOTE BY US POWER SQUADRON 2001
 JV6760'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6761 ***********************************************************************
 JV6761  DESIGNATION -  FREY AZ MK
 JV6761  PID         -  JV6761
 JV6761  STATE/COUNTY-  MD/HARFORD
 JV6761  COUNTRY     -  US
 JV6761  USGS QUAD   -  EDGEWOOD (2016)
 JV6761
 JV6761                         *CURRENT SURVEY CONTROL
 JV6761  ______________________________________________________________________
 JV6761* NAD 83(2011) POSITION- 39 26 17.72200(N) 076 15 58.20294(W)   ADJUSTED
 JV6761* NAD 83(2011) ELLIP HT-   -22.091 (meters)        (06/27/12)   ADJUSTED
 JV6761* NAD 83(2011) EPOCH   -  2010.00
 JV6761* NAVD 88 ORTHO HEIGHT -    11.0   (meters)       36.    (feet) VERTCON3
 JV6761  ______________________________________________________________________
 JV6761  GEOID HEIGHT    -        -33.143 (meters)                     GEOID18
 JV6761  NAD 83(2011) X  -  1,171,044.676 (meters)                     COMP
 JV6761  NAD 83(2011) Y  - -4,791,520.411 (meters)                     COMP
 JV6761  NAD 83(2011) Z  -  4,029,997.589 (meters)                     COMP
 JV6761  LAPLACE CORR    -         -2.45  (seconds)                    DEFLEC18
 JV6761
 JV6761  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6761  Standards:
 JV6761         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6761            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6761  -------------------------------------------------------------------
 JV6761  NETWORK    1.15   2.49           0.51   0.41   1.27      0.25323414
 JV6761  -------------------------------------------------------------------
 JV6761  Click here for local accuracies and other accuracy information.
 JV6761
 JV6761.The horizontal coordinates were established by GPS observations
 JV6761.and adjusted by the National Geodetic Survey in June 2012.
 JV6761
 JV6761.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6761.been affixed to the stable North American tectonic plate. See 
 JV6761.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6761
 JV6761.The horizontal coordinates are valid at the epoch date displayed above
 JV6761.which is a decimal equivalence of Year/Month/Day.
 JV6761
 JV6761.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6761.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6761
 JV6761.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6761.GEOID18 height accuracy estimate available here.
 JV6761
 JV6761.Click photographs - Photos may exist for this station.
 JV6761
 JV6761.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6761
 JV6761.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6761
 JV6761.The ellipsoidal height was determined by GPS observations
 JV6761.and is referenced to NAD 83.
 JV6761
 JV6761. The following values were computed from the NAD 83(2011) position.
 JV6761
 JV6761;                    North         East     Units Scale Factor Converg.
 JV6761;SPC MD       -   196,913.724   463,174.445   MT  0.99999797   +0 27 38.1
 JV6761;SPC MD       -   646,041.11  1,519,598.16   sFT  0.99999797   +0 27 38.1
 JV6761;UTM  18      - 4,366,177.050   391,038.180   MT  0.99974618   -0 48 15.9
 JV6761
 JV6761!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6761!SPC MD       -   1.00000347  x   0.99999797  =   1.00000144
 JV6761!UTM  18      -   1.00000347  x   0.99974618  =   0.99974964
 JV6761
 JV6761_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9103866177(NAD 83)
 JV6761
 JV6761|---------------------------------------------------------------------|
 JV6761| PID    Reference Object                     Distance      Geod. Az  |
 JV6761|                                                           dddmmss.s |
 JV6761| JV6760 FREY                                358.768 METERS 22326     |
 JV6761|---------------------------------------------------------------------|
 JV6761
 JV6761                          SUPERSEDED SURVEY CONTROL
 JV6761
 JV6761  NAD 83(2007)-  39 26 17.72217(N)    076 15 58.20367(W) AD(2002.00) 0
 JV6761  ELLIP H (02/10/07)  -22.071  (m)                       GP(2002.00)    
 JV6761  ELLIP H (09/18/02)  -22.066  (m)                       GP(       ) 4 2
 JV6761  NAD 83(1991)-  39 26 17.72135(N)    076 15 58.20355(W) AD(       ) 1
 JV6761  ELLIP H (01/27/92)  -22.117  (m)                       GP(       ) 4 1
 JV6761  NAD 83(1986)-  39 26 17.71546(N)    076 15 58.21029(W) AD(       ) 1
 JV6761  NGVD 29 (06/18/91)   11.3    (m)  UNKNOWN  model used  GPS OBS        
 JV6761
 JV6761.Superseded values are not recommended for survey control.
 JV6761
 JV6761.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6761.See file dsdata.pdf to determine how the superseded data were derived.
 JV6761
 JV6761_MARKER: DZ = AZIMUTH MARK DISK
 JV6761_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6761_STAMPING: 130 FREY 1989
 JV6761_MARK LOGO: MD-025
 JV6761_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6761_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6761+STABILITY: SURFACE MOTION
 JV6761_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6761+SATELLITE: SATELLITE OBSERVATIONS - January 16, 1990
 JV6761
 JV6761  HISTORY     - Date     Condition        Report By
 JV6761  HISTORY     - 1989     MONUMENTED       RDA
 JV6761  HISTORY     - 19900116 GOOD
 JV6761  HISTORY     - 20010505 MARK NOT FOUND   USPSQD
 JV6761
 JV6761                          STATION DESCRIPTION
 JV6761
 JV6761'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6761'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTHEAST ALONG
 JV6761'FREYS ROAD 0.2 MILE TO THE MARK ON THE LEFT.
 JV6761'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6761'ABOUT 1 INCH BELOW GROUND STAMPED 130 FREYS 1989.  THE MARK IS 31.7
 JV6761'FEET NORTHWEST FROM G AND E POLE NUMBER 832378, 3.0 FEET NORTHWEST
 JV6761'FROM A FIRE HYDRANT, 11.5 FEET NORTHWEST FROM THE NORTHWEST EDGE OF
 JV6761'PAVEMENT OF FREYS ROAD AND 1177.05 FEET FROM THE STATION.
 JV6761
 JV6761                          STATION RECOVERY (1990)
 JV6761
 JV6761'RECOVERED 1990
 JV6761'RECOVERED IN GOOD CONDITION.
 JV6761
 JV6761                          STATION RECOVERY (2001)
 JV6761
 JV6761'RECOVERY NOTE BY US POWER SQUADRON 2001
 JV6761'AZIMUTH NOT RECOVERED.  NEW HOUSING DEVELOPMENT AND SIDEWALKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5809 ***********************************************************************
 HV5809  DESIGNATION -  FRIEL
 HV5809  PID         -  HV5809
 HV5809  STATE/COUNTY-  MD/QUEEN ANNES
 HV5809  COUNTRY     -  US
 HV5809  USGS QUAD   -  QUEENSTOWN (2016)
 HV5809
 HV5809                         *CURRENT SURVEY CONTROL
 HV5809  ______________________________________________________________________
 HV5809* NAD 83(1991) POSITION- 38 59 42.80150(N) 076 09 26.78530(W)   ADJUSTED
 HV5809* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 HV5809  ______________________________________________________________________
 HV5809  GEOID HEIGHT    -        -33.819 (meters)                     GEOID18
 HV5809  LAPLACE CORR    -         -3.91  (seconds)                    DEFLEC18
 HV5809  HORZ ORDER      -  THIRD
 HV5809
 HV5809.The horizontal coordinates were established by classical geodetic methods
 HV5809.and adjusted by the National Geodetic Survey in January 1992.
 HV5809
 HV5809.The orthometric height was scaled from a topographic map.
 HV5809
 HV5809.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5809.GEOID18 height accuracy estimate available here.
 HV5809
 HV5809.Click photographs - Photos may exist for this station.
 HV5809
 HV5809.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5809
 HV5809. The following values were computed from the NAD 83(1991) position.
 HV5809
 HV5809;                    North         East     Units Scale Factor Converg.
 HV5809;SPC MD       -   147,812.703   472,988.281   MT  0.99995201   +0 31 43.7
 HV5809;SPC MD       -   484,948.84  1,551,795.72   sFT  0.99995201   +0 31 43.7
 HV5809;UTM  18      - 4,316,883.548   399,767.035   MT  0.99972371   -0 43 42.2
 HV5809
 HV5809!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5809!SPC MD       -   1.00000409  x   0.99995201  =   0.99995610
 HV5809!UTM  18      -   1.00000409  x   0.99972371  =   0.99972780
 HV5809
 HV5809:                Primary Azimuth Mark                     Grid Az
 HV5809:SPC MD       -  FRIEL AZ MK                              135 19 33.0
 HV5809:UTM  18      -  FRIEL AZ MK                              136 34 58.9
 HV5809
 HV5809_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9976716883(NAD 83)
 HV5809
 HV5809|---------------------------------------------------------------------|
 HV5809| PID    Reference Object                     Distance      Geod. Az  |
 HV5809|                                                           dddmmss.s |
 HV5809| CX2784 FRIEL RM 1                           27.316 METERS 03228     |
 HV5809| CX2783 FRIEL AZ MK                                        1355116.7 |
 HV5809| CX2785 FRIEL RM 2                           75.048 METERS 16909     |
 HV5809|---------------------------------------------------------------------|
 HV5809
 HV5809                          SUPERSEDED SURVEY CONTROL
 HV5809
 HV5809  NAD 83(1986)-  38 59 42.79731(N)    076 09 26.79706(W) AD(       ) 3
 HV5809  NAD 27      -  38 59 42.39000(N)    076 09 28.00100(W) AD(       ) 3
 HV5809
 HV5809.Superseded values are not recommended for survey control.
 HV5809
 HV5809.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5809.See file dsdata.pdf to determine how the superseded data were derived.
 HV5809
 HV5809_MARKER: DS = TRIANGULATION STATION DISK
 HV5809_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5809_STAMPING: FRIEL 1934
 HV5809_MARK LOGO: CGS
 HV5809_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5809+STABILITY: SURFACE MOTION
 HV5809
 HV5809  HISTORY     - Date     Condition        Report By
 HV5809  HISTORY     - 1934     MONUMENTED       CGS
 HV5809  HISTORY     - 1938     GOOD             CGS
 HV5809  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5809
 HV5809                          STATION DESCRIPTION
 HV5809
 HV5809'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV5809'THIS SECOND-ORDER STATION IS ABOUT 0.5 MILE N OF THE VILLAGE OF
 HV5809'QUEENSTOWN, ABOUT 0.75 MILE E OF DE CURCY POINT, ON THE E BANK OF
 HV5809'QUEENSTOWN CREEK, ON THE PROPERTY OF S.E.W. FRIEL, APPROXIMATELY
 HV5809'80 YARDS NNE OF AN OLD TWO-STORY FRAME HOUSE OCCUPIED BY A MR.
 HV5809'GARRISON, 47 FEET SSW OF AN 8-INCH TREE ON THE EDGE OF AN
 HV5809'EMBANKMENT, AND 17.9 FEET SE OF A 25-FOOT EMBANKMENT.  THE MARK IS
 HV5809'FLUSH WITH THE SURFACE OF THE GROUND AND MAY BECOME COVERED WITH
 HV5809'DIRT DUE TO A SLIGHT SLOPE OF GROUND FROM THE EDGE OF THE
 HV5809'EMBANKMENT TOWARD THE STATION.  THE MARK IS STAMPED FRIEL 1934.
 HV5809'
 HV5809'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HV5809'BRONZE DISKS SET IN CONCRETE.
 HV5809'
 HV5809'REFERENCE MARK NO.1 IS 89.62 FEET NNE OF THE STATION, 46.4 FEET
 HV5809'SSW OF A 16-INCH LEANING TREE, AND 25 FEET SSE OF A 14-INCH TREE
 HV5809'ON THE EDGE OF AN EMBANKMENT.  THE MARK PROJECTS 6 INCHES ABOVE
 HV5809'GROUND AND IS STAMPED FRIEL NO.1 1934.
 HV5809'
 HV5809'REFERENCE MARK NO.2 IS 246.22 FEET SSW OF THE STATION, 97.1 FEET
 HV5809'E OF THE SW CORNER OF MR. GARRISONS HOUSE, 43.6 FEET SE OF A TWIN
 HV5809'8-INCH MULBERRY TREE, AND 1 FOOT WNW OF THE NE CORNER OF A STORAGE
 HV5809'SHED.  THE MARK PROJECTS 6 INCHES ABOVE GROUND AND IS STAMPED
 HV5809'FRIEL NO.2 1934.
 HV5809'
 HV5809'AZIMUTH MARK IS APPROXIMATELY 0.3 MILE SE OF THE STATION, AT THE
 HV5809'NW CORNER OF A SCHOOL BUILDING, ABOUT 24 PACES S OF THE MOST
 HV5809'EASTERLY TOILET.  THE MARK PROJECTS 6 INCHES ABOVE GROUND AND IS
 HV5809'STAMPED FRIEL AZIMUTH MARK 1934.
 HV5809'
 HV5809'TO REACH THE STATION FROM THE POST OFFICE AT QUEENSTOWN, GO NE ON
 HV5809'STATE HIGHWAY 18 TOWARD CENTERVILLE FOR ABOUT 0.15 MILE TO A
 HV5809'T-ROAD TO THE LEFT AND A SCHOOLHOUSE, TURN LEFT ON A DIRT ROAD FOR
 HV5809'ABOUT 0.3 MILE TO A RED GATE ON THE RIGHT, TURN RIGHT THROUGH THE
 HV5809'GATE AND GO 50 YARDS BETWEEN TWO RED BARNS, THEN TURN W FOR ABOUT
 HV5809'100 YARDS TOWARD MR. GARRISONS HOUSE.  TURN N INTO A CULTIVATED
 HV5809'FIELD AT A POINT ABOUT 22 PACES E OF MR. GARRISONS HOUSE, GOING
 HV5809'BETWEEN A TOOL SHED AND A STORAGE SHED, GO ABOUT 50 YARDS ON A DIM
 HV5809'ROAD INTO A FIELD THEN TURN SHARPLY TO THE LEFT TO THE EDGE OF AN
 HV5809'EMBANKMENT AND THE STATION.
 HV5809'
 HV5809'A 103-FOOT TOWER WILL CLEAR ALL LINES OBSERVED.
 HV5809
 HV5809                          STATION RECOVERY (1938)
 HV5809
 HV5809'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV5809'STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.
 HV5809'
 HV5809'THE STATION IS ABOUT 0.5 MILE N OF THE VILLAGE OF QUEENSTOWN,
 HV5809'ABOUT 0.75 MILE E OF DE CURCY POINT ON THE E BANK OF QUEENSTOWN
 HV5809'CREEK ON THE PROPERTY OF S.E.W. FRIEL, 47 FEET SSW OF AN 8-INCH
 HV5809'LEANING TREE ON THE EDGE OF AN EMBANKMENT, AND 17.9 FEET SE OF A
 HV5809'25-FOOT EMBANKMENT.  THE MARK PROJECTS ABOUT 4 INCHES ABOVE
 HV5809'GROUND.  THE MARK IS STAMPED FRIEL, 1934.
 HV5809'
 HV5809'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 HV5809'TABLETS SET IN CONCRETE.
 HV5809'
 HV5809'REFERENCE MARK NO.1 IS 89.62 FEET NNE OF THE STATION, 46.4 FEET
 HV5809'SSW OF A 16-INCH LEANING TREE, AND 25 FEET SSE OF A 14-INCH TREE
 HV5809'ON THE EDGE OF AN EMBANKMENT.  THE MARK PROJECTS 3 INCHES ABOVE
 HV5809'GROUND AND IS STAMPED FRIEL NO.1 1934.
 HV5809'
 HV5809'REFERENCE MARK NO.2 IS 246.22 FEET SSW OF THE STATION, 43.6 FEET
 HV5809'SE OF A TWIN 8-INCH MULBERRY TREE.  THE MARK PROJECTS 6 INCHES
 HV5809'ABOVE GROUND AND IS STAMPED FRIEL NO.2 1934.  THE MARK IS ALSO 128
 HV5809'FEET ESE OF 32-INCH LOCUST TREE.
 HV5809'
 HV5809'AZIMUTH MARK IS APPROXIMATELY 0.3 MILE SE OF THE STATION, AT THE
 HV5809'NW CORNER OF A SCHOOL BUILDING, ABOUT 24 PACES S OF THE MOST
 HV5809'EASTERLY TOILET.  THE MARK PROJECTS 6 INCHES ABOVE GROUND AND IS
 HV5809'STAMPED FRIEL AZIMUTH MARK 1934.
 HV5809'
 HV5809'TO REACH THE STATION FROM THE POST OFFICE AT QUEENSTOWN, GO NE ON
 HV5809'STATE HIGHWAY 18 TOWARD CENTERVILLE FOR ABOUT 0.15 MILE TO A
 HV5809'T-ROAD TO THE LEFT AND A SCHOOLHOUSE, TURN LEFT ON A DIRT ROAD FOR
 HV5809'ABOUT 0.3 MILE TO A RED GATE ON THE RIGHT, TURN RIGHT THROUGH THE
 HV5809'GATE AND GO 25 YARDS E BETWEEN 2 RED BARNS, THEN TURN LEFT FOR
 HV5809'ABOUT 20 YARDS N TO GATE, CONTINUE ABOUT 130 PACES N TO LANE, TURN
 HV5809'RIGHT AND GO ABOUT 51 PACES NNE DOWN LANE.
 HV5809
 HV5809                          STATION RECOVERY (1961)
 HV5809
 HV5809'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5809'STATION MARK AND REFERENCE MARKS COULD NOT BE RECOVERED AFTER A
 HV5809'THOROUGH SEARCH.  IT APPEARS FROM THE CONTOUR OF THE GROUND THAT
 HV5809'PART OF THE EMBANKMENT MAY HAVE BEEN REMOVED TO PROVIDE FILL FOR A
 HV5809'NEARBY HOUSE.  THE AZIMUTH MARK WAS NOT VISITED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6656 ***********************************************************************
 JV6656  CBN         -  This is a Cooperative Base Network Control Station.
 JV6656  DESIGNATION -  FRIEND
 JV6656  PID         -  JV6656
 JV6656  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6656  COUNTRY     -  US
 JV6656  USGS QUAD   -  RELAY (2016)
 JV6656
 JV6656                         *CURRENT SURVEY CONTROL
 JV6656  ______________________________________________________________________
 JV6656* NAD 83(2011) POSITION- 39 09 42.21168(N) 076 39 26.94054(W)   ADJUSTED
 JV6656* NAD 83(2011) ELLIP HT-    -2.844 (meters)        (06/27/12)   ADJUSTED
 JV6656* NAD 83(2011) EPOCH   -  2010.00
 JV6656* NAVD 88 ORTHO HEIGHT -    29.886 (meters)       98.05  (feet) ADJUSTED
 JV6656  ______________________________________________________________________
 JV6656  GEOID HEIGHT    -        -32.743 (meters)                     GEOID18
 JV6656  NAD 83(2011) X  -  1,142,783.565 (meters)                     COMP
 JV6656  NAD 83(2011) Y  - -4,818,341.387 (meters)                     COMP
 JV6656  NAD 83(2011) Z  -  4,006,252.358 (meters)                     COMP
 JV6656  LAPLACE CORR    -         -5.50  (seconds)                    DEFLEC18
 JV6656  DYNAMIC HEIGHT  -         29.870 (meters)       98.00  (feet) COMP
 JV6656  MODELED GRAVITY -    980,090.3   (mgal)                       NAVD 88
 JV6656
 JV6656  VERT ORDER      -  FIRST     CLASS II
 JV6656
 JV6656  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6656  Standards:
 JV6656         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6656            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6656  -------------------------------------------------------------------
 JV6656  NETWORK    0.21   0.43           0.09   0.08   0.22      0.00467501
 JV6656  -------------------------------------------------------------------
 JV6656  Click here for local accuracies and other accuracy information.
 JV6656
 JV6656.The horizontal coordinates were established by GPS observations
 JV6656.and adjusted by the National Geodetic Survey in June 2012.
 JV6656
 JV6656.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6656.been affixed to the stable North American tectonic plate. See 
 JV6656.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6656
 JV6656.The horizontal coordinates are valid at the epoch date displayed above
 JV6656.which is a decimal equivalence of Year/Month/Day.
 JV6656
 JV6656.The orthometric height was determined by differential leveling and
 JV6656.adjusted by the NATIONAL GEODETIC SURVEY
 JV6656.in June 2008.
 JV6656
 JV6656.No vertical observational check was made to the station.
 JV6656
 JV6656.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6656.GEOID18 height accuracy estimate available here.
 JV6656
 JV6656.Click photographs - Photos may exist for this station.
 JV6656
 JV6656.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6656
 JV6656.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6656
 JV6656.The ellipsoidal height was determined by GPS observations
 JV6656.and is referenced to NAD 83.
 JV6656
 JV6656.The dynamic height is computed by dividing the NAVD 88
 JV6656.geopotential number by the normal gravity value computed on the
 JV6656.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6656.degrees latitude (g = 980.6199 gals.).
 JV6656
 JV6656.The modeled gravity was interpolated from observed gravity values.
 JV6656
 JV6656. The following values were computed from the NAD 83(2011) position.
 JV6656
 JV6656;                    North         East     Units Scale Factor Converg.
 JV6656;SPC MD       -   166,015.242   429,602.124   MT  0.99996227   +0 12 53.9
 JV6656;SPC MD       -   544,668.34  1,409,452.97   sFT  0.99996227   +0 12 53.9
 JV6656;UTM  18      - 4,336,031.934   356,798.812   MT  0.99985250   -1 02 48.8
 JV6656
 JV6656!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6656!SPC MD       -   1.00000045  x   0.99996227  =   0.99996272
 JV6656!UTM  18      -   1.00000045  x   0.99985250  =   0.99985295
 JV6656
 JV6656_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5679836031(NAD 83)
 JV6656
 JV6656                          SUPERSEDED SURVEY CONTROL
 JV6656
 JV6656  NAD 83(2007)-  39 09 42.21202(N)    076 39 26.94134(W) AD(2002.00) 0
 JV6656  ELLIP H (02/10/07)   -2.838  (m)                       GP(2002.00)    
 JV6656  ELLIP H (02/12/02)   -2.830  (m)                       GP(       ) 4 1
 JV6656  ELLIP H (12/03/93)   -2.900  (m)                       GP(       ) 4 1
 JV6656  NAD 83(1991)-  39 09 42.21182(N)    076 39 26.94052(W) AD(       ) B
 JV6656  ELLIP H (10/23/91)   -2.904  (m)                       GP(       ) 4 1
 JV6656  NAVD 88              29.88   (m)           98.0    (f) LEVELING    3  
 JV6656  NAVD 88 (08/10/94)   29.882  (m)           98.04   (f) SUPERSEDED  2 1
 JV6656  NGVD 29              30.13   (m)           98.9    (f) LEVELING    3  
 JV6656
 JV6656.Superseded values are not recommended for survey control.
 JV6656
 JV6656.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6656.See file dsdata.pdf to determine how the superseded data were derived.
 JV6656
 JV6656_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6656_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6656_STAMPING: FRIEND 1990
 JV6656_MARK LOGO: NGS
 JV6656_PROJECTION: FLUSH
 JV6656_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6656_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6656+STABILITY: SURFACE MOTION
 JV6656_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6656+SATELLITE: SATELLITE OBSERVATIONS - July 27, 2021
 JV6656
 JV6656  HISTORY     - Date     Condition        Report By
 JV6656  HISTORY     - 1990     MONUMENTED       MDSHA
 JV6656  HISTORY     - 19910118 GOOD
 JV6656  HISTORY     - 19920921 GOOD             NOS
 JV6656  HISTORY     - 19930511 GOOD             NOS
 JV6656  HISTORY     - 19950224 GOOD             MCCRON
 JV6656  HISTORY     - 19961003 GOOD             DMW
 JV6656  HISTORY     - 19981013 GOOD             DMW
 JV6656  HISTORY     - 19991018 GOOD             GEOMET
 JV6656  HISTORY     - 20000327 GOOD             MDSHA
 JV6656  HISTORY     - 20030828 GOOD             INDIV
 JV6656  HISTORY     - 20071101 GOOD             JARICE
 JV6656  HISTORY     - 20080622 GOOD             JMTMD
 JV6656  HISTORY     - 20081015 GOOD             GPSSS
 JV6656  HISTORY     - 20110619 GOOD             INDIV
 JV6656  HISTORY     - 20110818 GOOD             INDIV
 JV6656  HISTORY     - 20120209 GOOD             JMTMD
 JV6656  HISTORY     - 20120223 GOOD             INDIV
 JV6656  HISTORY     - 20130214 GOOD             JMTMD
 JV6656  HISTORY     - 20130819 GOOD             JMTMD
 JV6656  HISTORY     - 20170306 GOOD             INDIV
 JV6656  HISTORY     - 20170510 GOOD             WRA
 JV6656  HISTORY     - 20181102 GOOD             INDIV
 JV6656  HISTORY     - 20210727 GOOD             MD-001
 JV6656
 JV6656                          STATION DESCRIPTION
 JV6656
 JV6656'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 JV6656'THE STATION IS LOCATED ABOUT 1 KM (0.6 MI) WEST OF GLEN BURNIE, 16.8
 JV6656'KM (10.4 MI) SOUTHEAST OF ELLICOT CITY, 1.75 KM (1.09 MI) NORTHEAST
 JV6656'OF SEVERN, AND ON THE GROUNDS OF FRIENDSHIP PARK. THE PROPERTY IS
 JV6656'OWNED BY ANNE ARUNDEL COUNTY RECREATION AND PARKS.
 JV6656'TO REACH THE STATION FROM THE INTERSECTION OF WHERE STATE HIGHWAY 3
 JV6656'CROSSES OVER STATE HIGHWAY 176 (DORSEY ROAD), 0.5 MI (0.8 KM) WEST OF
 JV6656'GLEN BURNIE, GO WEST ON STATE HIGHWAY 176 FOR 0.5 KM (0.3 MI) TO THE
 JV6656'ENTRANCE OF FRIENDSHIP PARK ON THE LEFT. TURN LEFT AND GO SOUTH FOR
 JV6656'0.06 KM (0.04 MI) TO A PARKING LOT ON THE RIGHT. TURN RIGHT AND GO
 JV6656'WEST ACROSS AND PAST THE END OF THE PARKING LOT ONTO THE GRASS FIELD
 JV6656'PAST THE PLAYGROUND FOR 0.09 KM (0.06 MI) TO THE STATION ON THE RIGHT
 JV6656'ALONG AND NEAR THE END OF A FENCE LINE.
 JV6656'THE STATION MARK IS A STANDARD NGS DISK SET IN THE TOP OF A 0.3 M
 JV6656'(1.0 FT) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF
 JV6656'THE GROUND. IT IS 41.15 M (135.01 FT) NORTHEAST OF A POLE NUMBERED
 JV6656'C/P 5 AND G/E 466465, 5.64 M (18.50 FT) EAST OF A POST AND RAIL FENCE
 JV6656'LINE, 16.0 M (52.5 FT) SOUTHEAST OF THE NORTHERN END POST OF THE FENCE
 JV6656'LINE, AND 33.07 M (108.50 FT) WEST NORTHWEST OF A 8-INCH PINE TREE.
 JV6656
 JV6656                          STATION RECOVERY (1991)
 JV6656
 JV6656'RECOVERED 1991
 JV6656'RECOVERED IN GOOD CONDITION.
 JV6656
 JV6656                          STATION RECOVERY (1992)
 JV6656
 JV6656'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JV6656'RECOVERED IN GOOD CONDITION.
 JV6656
 JV6656                          STATION RECOVERY (1993)
 JV6656
 JV6656'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1993
 JV6656'A NEW TO REACH FOLLOWS-- TO REACH STATION FROM INTERSECTION OF STATE
 JV6656'HIGHWAY 97/3 AND STATE HIGHWAY 176(DORSEY RD), GO WEST ON STATE
 JV6656'HIGHWAY 176 FOR 0.75 MI (1.21 KM) TO ENTRANCE TO FRIENDSHIP PARK ON
 JV6656'LEFT.  TURN LEFT AND PROCEED SOUTH 0.1 MI (0.2 KM) TO PARKING LOT ON
 JV6656'RIGHT.  TURN RIGHT AND GO WEST THROUGH PARKING LOT INTO GRASS FIELD,
 JV6656'THROUGH PLAYGROUND TO STATION ON RIGHT ALONG AND NEAR THE END OF A
 JV6656'WOODEN FENCE LINE AND SOUTH OF A ROW OF EVERGREEN TREES.
 JV6656
 JV6656                          STATION RECOVERY (1995)
 JV6656
 JV6656'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6656'RECOVERED AS DESCRIBED.
 JV6656
 JV6656                          STATION RECOVERY (1996)
 JV6656
 JV6656'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1996 (DMM)
 JV6656'RECOVERED AS DESCRIBED.
 JV6656
 JV6656                          STATION RECOVERY (1998)
 JV6656
 JV6656'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 JV6656'RECOVERED IN GOOD CONDITION.
 JV6656
 JV6656                          STATION RECOVERY (1999)
 JV6656
 JV6656'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BL)
 JV6656'GOOD FOR GPS.  EASY AND OPEN.
 JV6656
 JV6656                          STATION RECOVERY (2000)
 JV6656
 JV6656'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6656'RECOVERED AS DESCRIBED.
 JV6656
 JV6656                          STATION RECOVERY (2003)
 JV6656
 JV6656'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003
 JV6656'MINOR DESCRIPTION CHANGE.  SITE IS NOW CALLED ARUNDEL GOLF PARK.
 JV6656
 JV6656                          STATION RECOVERY (2007)
 JV6656
 JV6656'RECOVERY NOTE BY J A RICE INC 2007 (MRA)
 JV6656'RECOVERED AS DESCRIBED.
 JV6656
 JV6656                          STATION RECOVERY (2008)
 JV6656
 JV6656'RECOVERY NOTE BY JMT ENGINEERING 2008 (JMT)
 JV6656'RECOVERED AS DESCRIBED.
 JV6656
 JV6656                          STATION RECOVERY (2008)
 JV6656
 JV6656'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (JJ)
 JV6656'RECOVERED BY JERRY OF FSH AND ASSOCIATES.
 JV6656
 JV6656                          STATION RECOVERY (2011)
 JV6656
 JV6656'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 JV6656'RECOVERED AS DESCRIBED, DESCRIPTION IS ADEQUATE. USED FOR GPS (JFS)
 JV6656
 JV6656                          STATION RECOVERY (2011)
 JV6656
 JV6656'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 JV6656'RECOVERED BY WRA
 JV6656'DESCRIPTION IS ADEQUATE
 JV6656
 JV6656                          STATION RECOVERY (2012)
 JV6656
 JV6656'RECOVERY NOTE BY JMT ENGINEERING 2012 (EAS)
 JV6656'APPENDED DESCRIPTION.
 JV6656'FRIENDSHIP PARK IS NOW ARUNDEL GOLF PARK
 JV6656'PLAYGROUND IS GONE AND REPLACED WITH BENCHES AND CONC.PADS.
 JV6656'
 JV6656'USED FOR GPS RTKN (KEYNET)
 JV6656'N +0.06 E -0.05 Z -0.1
 JV6656
 JV6656                          STATION RECOVERY (2012)
 JV6656
 JV6656'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2012 (WRA)
 JV6656'RECOVERED AS DESCRIBED, DESCRIPTION IS ADEQUATE
 JV6656
 JV6656                          STATION RECOVERY (2013)
 JV6656
 JV6656'RECOVERY NOTE BY JMT ENGINEERING 2013 (EAS)
 JV6656'FRIENDSHIP PARK IS NOW ARUNDEL GOLF PARK.  PLAYGROUND IS GONE AND IS
 JV6656'REPLACED WITH BENCHES AND CONCRETE PADS.
 JV6656
 JV6656                          STATION RECOVERY (2013)
 JV6656
 JV6656'RECOVERY NOTE BY JMT ENGINEERING 2013 (JAF)
 JV6656'RECOVERED AS DESCRIBED.
 JV6656
 JV6656                          STATION RECOVERY (2017)
 JV6656
 JV6656'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2017 (WRA)
 JV6656'RECOVERED AS DESCRIBED
 JV6656'DESCRIPTION IS ADEQUATE
 JV6656'USED FOR RAPID STATIC GPS
 JV6656
 JV6656                          STATION RECOVERY (2017)
 JV6656
 JV6656'RECOVERY NOTE BY WHIGMAN AND REQUARDT ASSOCIATES 2017 (WRA)
 JV6656'RECOVERED AS DESCRIBED
 JV6656'DESCRIPTION IS ADEQUATE
 JV6656
 JV6656                          STATION RECOVERY (2018)
 JV6656
 JV6656'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2018 (CB)
 JV6656'RECOVERED IN GOOD CONDITION.
 JV6656
 JV6656                          STATION RECOVERY (2021)
 JV6656
 JV6656'RECOVERY NOTE BY ALLEGANY COUNTY MARYLAND 2021 (CK)
 JV6656'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4662 ***********************************************************************
 AB4662  DESIGNATION -  FRIEND
 AB4662  PID         -  AB4662
 AB4662  STATE/COUNTY-  MD/CARROLL
 AB4662  COUNTRY     -  US
 AB4662  USGS QUAD   -  NEW WINDSOR (2016)
 AB4662
 AB4662                         *CURRENT SURVEY CONTROL
 AB4662  ______________________________________________________________________
 AB4662* NAD 83(2011) POSITION- 39 32 49.31225(N) 077 00 14.97161(W)   ADJUSTED
 AB4662* NAD 83(2011) ELLIP HT-   213.942 (meters)        (06/27/12)   ADJUSTED
 AB4662* NAD 83(2011) EPOCH   -  2010.00
 AB4662* NAVD 88 ORTHO HEIGHT -   246.1   (meters)      807.    (feet) GPS OBS
 AB4662  ______________________________________________________________________
 AB4662  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4662  GEOID HEIGHT    -        -32.191 (meters)                     GEOID99
 AB4662  GEOID HEIGHT    -        -32.179 (meters)                     GEOID18
 AB4662  NAD 83(2011) X  -  1,107,546.379 (meters)                     COMP
 AB4662  NAD 83(2011) Y  - -4,798,899.573 (meters)                     COMP
 AB4662  NAD 83(2011) Z  -  4,039,467.536 (meters)                     COMP
 AB4662  LAPLACE CORR    -          3.45  (seconds)                    DEFLEC18
 AB4662
 AB4662  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4662  Standards:
 AB4662         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4662            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4662  -------------------------------------------------------------------
 AB4662  NETWORK    1.19   3.35           0.52   0.45   1.71     -0.04179520
 AB4662  -------------------------------------------------------------------
 AB4662  Click here for local accuracies and other accuracy information.
 AB4662
 AB4662.The horizontal coordinates were established by GPS observations
 AB4662.and adjusted by the National Geodetic Survey in June 2012.
 AB4662
 AB4662.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4662.been affixed to the stable North American tectonic plate. See 
 AB4662.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4662
 AB4662.The horizontal coordinates are valid at the epoch date displayed above
 AB4662.which is a decimal equivalence of Year/Month/Day.
 AB4662
 AB4662.The orthometric height was determined by GPS observations and a
 AB4662.high-resolution geoid model.
 AB4662
 AB4662.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4662.GEOID18 height accuracy estimate available here.
 AB4662
 AB4662.Click photographs - Photos may exist for this station.
 AB4662
 AB4662.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4662
 AB4662.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4662
 AB4662.The ellipsoidal height was determined by GPS observations
 AB4662.and is referenced to NAD 83.
 AB4662
 AB4662. The following values were computed from the NAD 83(2011) position.
 AB4662
 AB4662;                    North         East     Units Scale Factor Converg.
 AB4662;SPC MD       -   208,736.650   399,642.524   MT  1.00001841   -0 00 09.4
 AB4662;SPC MD       -   684,830.16  1,311,160.51   sFT  1.00001841   -0 00 09.4
 AB4662;UTM  18      - 4,379,402.167   327,793.873   MT  0.99996512   -1 16 35.0
 AB4662
 AB4662!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4662!SPC MD       -   0.99996644  x   1.00001841  =   0.99998485
 AB4662!UTM  18      -   0.99996644  x   0.99996512  =   0.99993156
 AB4662
 AB4662_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2779379402(NAD 83)
 AB4662
 AB4662                          SUPERSEDED SURVEY CONTROL
 AB4662
 AB4662  NAD 83(2007)-  39 32 49.31252(N)    077 00 14.97236(W) AD(2002.00) 0
 AB4662  ELLIP H (02/10/07)  213.963  (m)                       GP(2002.00)    
 AB4662  ELLIP H (08/30/02)  213.955  (m)                       GP(       ) 4 2
 AB4662  NAD 83(1991)-  39 32 49.31199(N)    077 00 14.97290(W) AD(       ) 1
 AB4662  ELLIP H (07/03/96)  213.883  (m)                       GP(       ) 1 1
 AB4662  NAVD 88 (07/03/96)  246.1    (m)  GEOID93  model used  GPS OBS        
 AB4662
 AB4662.Superseded values are not recommended for survey control.
 AB4662
 AB4662.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4662.See file dsdata.pdf to determine how the superseded data were derived.
 AB4662
 AB4662_MARKER: DD = SURVEY DISK
 AB4662_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4662_STAMPING: FRIEND 1994
 AB4662_MARK LOGO: MD-013
 AB4662_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4662_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4662+STABILITY: SURFACE MOTION
 AB4662_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AB4662+SATELLITE: SATELLITE OBSERVATIONS - April 15, 2008
 AB4662
 AB4662  HISTORY     - Date     Condition        Report By
 AB4662  HISTORY     - 1995     MONUMENTED       MD-013
 AB4662  HISTORY     - 20080415 GOOD             GEOCAC
 AB4662
 AB4662                          STATION DESCRIPTION
 AB4662
 AB4662'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4662'STATION IS LOCATED ABOUT 1.5 MI (2.4 KM) SOUTH OF THE CENTER OF
 AB4662'WESTMINSTER ON THE GROUNDS OF THE FRIENDSHIP VALLEY ELEMENTARY SCHOOL.
 AB4662'TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 140 AND MD ROUTE 27
 AB4662'IN WESTMINSTER GO SOUTH ON MD ROUTE 27 FOR 3.4 MI (5.5 KM) TO THE
 AB4662'INTERSECTION WITH KATE WAGNER ROAD. TURN LEFT ON KATE WAGNER ROAD AND
 AB4662'GO EAST FOR 0.7 MI (1.1 KM) TO THE INTERSECTION WITH GIST ROAD. TURN
 AB4662'LEFT ON GIST ROAD AND GO NORTH FOR 0.2 MI (0.3 KM) TO THE ENTRANCE OF
 AB4662'THE SCHOOL AND THE STATION ON THE LEFT. GO THROUGH SCHOOL PARKING LOT
 AB4662'TO THE NORTHWEST CORNER OF THE SCHOOL PROPERTY. STATION IS NEAR A ROW
 AB4662'OF 4 IN DIAMETER PINE TREES. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4662'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 98.3 FT
 AB4662'(30.0 M) SOUTH OF A P.K. NAIL SET IN A STONE, 69.9 FT (21.3 M) SOUTH
 AB4662'OF A FIELD EDGE, 37 FT (11.3 M) WEST THE PINE TREES AND 74.5 FT (22.7
 AB4662'M) NORTHWEST OF THE TOP OF A BANK.
 AB4662
 AB4662                          STATION RECOVERY (2008)
 AB4662
 AB4662'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 AB4662'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0249 ***********************************************************************
 HU0249  DESIGNATION -  FRIEND AZ MK
 HU0249  PID         -  HU0249
 HU0249  STATE/COUNTY-  MD/WORCESTER
 HU0249  COUNTRY     -  US
 HU0249  USGS QUAD   -  BERLIN (2016)
 HU0249
 HU0249                         *CURRENT SURVEY CONTROL
 HU0249  ______________________________________________________________________
 HU0249* NAD 83(1991) POSITION- 38 22 07.21747(N) 075 12 28.90994(W)   ADJUSTED
 HU0249* NAVD 88 ORTHO HEIGHT -     9.808 (meters)       32.18  (feet) ADJUSTED
 HU0249  ______________________________________________________________________
 HU0249  GEOID HEIGHT    -        -35.972 (meters)                     GEOID18
 HU0249  LAPLACE CORR    -         -0.58  (seconds)                    DEFLEC18
 HU0249  DYNAMIC HEIGHT  -          9.802 (meters)       32.16  (feet) COMP
 HU0249  MODELED GRAVITY -    980,010.4   (mgal)                       NAVD 88
 HU0249
 HU0249  HORZ ORDER      -  THIRD
 HU0249  VERT ORDER      -  SECOND    CLASS 0
 HU0249
 HU0249.The horizontal coordinates were established by classical geodetic methods
 HU0249.and adjusted by the National Geodetic Survey in January 1992.
 HU0249
 HU0249.The orthometric height was determined by differential leveling and
 HU0249.adjusted by the NATIONAL GEODETIC SURVEY
 HU0249.in June 1991.
 HU0249
 HU0249.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0249.GEOID18 height accuracy estimate available here.
 HU0249
 HU0249.Click photographs - Photos may exist for this station.
 HU0249
 HU0249.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0249
 HU0249.The dynamic height is computed by dividing the NAVD 88
 HU0249.geopotential number by the normal gravity value computed on the
 HU0249.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0249.degrees latitude (g = 980.6199 gals.).
 HU0249
 HU0249.The modeled gravity was interpolated from observed gravity values.
 HU0249
 HU0249. The following values were computed from the NAD 83(1991) position.
 HU0249
 HU0249;                    North         East     Units Scale Factor Converg.
 HU0249;SPC MD       -    79,462.503   556,590.057   MT  0.99998876   +1 07 28.9
 HU0249;SPC MD       -   260,703.23  1,826,079.21   sFT  0.99998876   +1 07 28.9
 HU0249;UTM  18      - 4,246,741.656   481,827.281   MT  0.99960407   -0 07 44.9
 HU0249
 HU0249!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0249!SPC MD       -   1.00000411  x   0.99998876  =   0.99999287
 HU0249!UTM  18      -   1.00000411  x   0.99960407  =   0.99960817
 HU0249
 HU0249_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8182746741(NAD 83)
 HU0249
 HU0249                          SUPERSEDED SURVEY CONTROL
 HU0249
 HU0249  NAD 83(1986)-  38 22 07.20226(N)    075 12 28.93693(W) AD(       ) 3
 HU0249  NGVD 29              10.05   (m)           33.0    (f) LEVELING    3  
 HU0249  NGVD 29 (11/26/84)   10.050  (m)           32.97   (f) ADJUSTED    2 0
 HU0249
 HU0249.Superseded values are not recommended for survey control.
 HU0249
 HU0249.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0249.See file dsdata.pdf to determine how the superseded data were derived.
 HU0249
 HU0249_MARKER: DZ = AZIMUTH MARK DISK
 HU0249_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0249_STAMPING: FRIEND 1955
 HU0249_MARK LOGO: CGS
 HU0249_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0249_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0249+STABILITY: SURFACE MOTION
 HU0249
 HU0249  HISTORY     - Date     Condition        Report By
 HU0249  HISTORY     - 1955     MONUMENTED       CGS
 HU0249  HISTORY     - 1967     GOOD             MDSRC
 HU0249  HISTORY     - 1986     GOOD             NGS
 HU0249
 HU0249                          STATION DESCRIPTION
 HU0249
 HU0249'DESCRIBED BY MD STATE ROADS COMM 1967
 HU0249'3 MI N FROM BERLIN.
 HU0249'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 113 AND U.S. HIGHWAY
 HU0249'50, PROCEED NORTH ON U.S. 113 FOR 2.5 MILES TO THE INTERSECTION OF
 HU0249'MARYLAND ROUTE 452, CONTINUE ON U.S. 113 FOR 0.05 MILES TO A HARD
 HU0249'SURFACE ROAD ON THE LEFT, TURN LEFT ON THE HARD SURFACE ROAD AND
 HU0249'GO WEST FOR 0.5 MILE AND MARK ON THE LEFT.  IT IS 27.0 FEET EAST
 HU0249'OF THE CENTERLINE OF A FARM LANE, 19.0 FEET SOUTH OF THE CENTERLINE
 HU0249'OF THE HARD SURFACE ROAD AND 1.0 FEET NORTH OF A 4 IN X 4 IN WHITE
 HU0249'WITNESS POST.  A STANDARD DISK SET FLUSH WITH THE GROUND, STAMPED,
 HU0249'FRIEND 1955.
 HU0249
 HU0249                          STATION RECOVERY (1986)
 HU0249
 HU0249'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HU0249'THE STATION IS LOCATED ABOUT 4.8 KM (3 MI) NORTH OF BERLIN,
 HU0249'3.2 KM (2 MI) NORTH-NORTHWEST OF THE INTERSECTION OF U.S. HIGHWAYS
 HU0249'50 AND 113, 3.2 KM (2 MI) EAST OF ST. MARTIN AND ON THE SOUTH SIDE OF
 HU0249'CAREY ROAD.
 HU0249'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU0249'
 HU0249'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 50 AND 113,
 HU0249'GO NORTH FOR 3.05 KM (1.9 MI) ON U.S. HIGHWAY 113 TO A CROSSROADS.
 HU0249'TURN LEFT AND GO NORTHWEST FOR 0.67 METERS (0.4 FT) ON CAREY ROAD
 HU0249'THE STATION ON THE LEFT.
 HU0249'
 HU0249'THE STATION IS A STANDARD NGS DISK
 HU0249'STAMPED---FRIEND 1955---,
 HU0249'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 HU0249'30 CM IN DIAMETER RECESSED 12 CM BELOW GROUND.  LOCATED
 HU0249'6.1 METERS (19.9 FT) SOUTHWEST FROM THE CENTER OF CAREY ROAD,
 HU0249'19.3 METERS (63.3 FT) SOUTH-SOUTHWEST FROM A TWIN 15-INCH CHERRY
 HU0249'TREE,
 HU0249'42.0 METERS (137.8 FT) NORTHWEST FROM A POWERLINE GUY POLE AND
 HU0249'0.9 METERS (2.8 FT) NORTHWEST FROM A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2665 ***********************************************************************
 HU2665  DESIGNATION -  FRIEND RESET
 HU2665  PID         -  HU2665
 HU2665  STATE/COUNTY-  MD/WORCESTER
 HU2665  COUNTRY     -  US
 HU2665  USGS QUAD   -  BERLIN (2016)
 HU2665
 HU2665                         *CURRENT SURVEY CONTROL
 HU2665  ______________________________________________________________________
 HU2665* NAD 83(1991) POSITION- 38 22 15.98749(N) 075 12 45.36115(W)   ADJUSTED
 HU2665* NAVD 88 ORTHO HEIGHT -     8.12  (meters)       26.6   (feet) RESET
 HU2665  ______________________________________________________________________
 HU2665  GEOID HEIGHT    -        -35.967 (meters)                     GEOID18
 HU2665  LAPLACE CORR    -         -0.55  (seconds)                    DEFLEC18
 HU2665  HORZ ORDER      -  SECOND
 HU2665  VERT ORDER      -  THIRD
 HU2665
 HU2665.The horizontal coordinates were established by classical geodetic methods
 HU2665.and adjusted by the National Geodetic Survey in January 1992.
 HU2665
 HU2665.The orthometric height was computed from unverified reset data.
 HU2665
 HU2665.No vertical observational check was made to the station.
 HU2665
 HU2665.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2665.GEOID18 height accuracy estimate available here.
 HU2665
 HU2665.Click photographs - Photos may exist for this station.
 HU2665
 HU2665.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2665
 HU2665. The following values were computed from the NAD 83(1991) position.
 HU2665
 HU2665;                    North         East     Units Scale Factor Converg.
 HU2665;SPC MD       -    79,725.037   556,185.487   MT  0.99998839   +1 07 18.6
 HU2665;SPC MD       -   261,564.56  1,824,751.89   sFT  0.99998839   +1 07 18.6
 HU2665;UTM  18      - 4,247,012.875   481,428.705   MT  0.99960425   -0 07 55.1
 HU2665
 HU2665!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2665!SPC MD       -   1.00000437  x   0.99998839  =   0.99999276
 HU2665!UTM  18      -   1.00000437  x   0.99960425  =   0.99960862
 HU2665
 HU2665:                Primary Azimuth Mark                     Grid Az
 HU2665:SPC MD       -  FRIEND AZ MK                             122 58 49.3
 HU2665:UTM  18      -  FRIEND AZ MK                             124 14 03.0
 HU2665
 HU2665_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8142847012(NAD 83)
 HU2665
 HU2665|---------------------------------------------------------------------|
 HU2665| PID    Reference Object                     Distance      Geod. Az  |
 HU2665|                                                           dddmmss.s |
 HU2665| HU1490 OCEAN CITY S MUNICIPAL TANK         APPROX.11.8 KM 1135057.2 |
 HU2665| HU0249 FRIEND AZ MK                        482.293 METERS 1240607.9 |
 HU2665| HU0247 FRIEND RM 1                          17.302 METERS 15541     |
 HU2665| HU0248 FRIEND RM 2                          30.713 METERS 21429     |
 HU2665|---------------------------------------------------------------------|
 HU2665
 HU2665                          SUPERSEDED SURVEY CONTROL
 HU2665
 HU2665  NAD 83(1986)-  38 22 15.97230(N)    075 12 45.38810(W) AD(       ) 2
 HU2665  NAD 27      -  38 22 15.56100(N)    075 12 46.70800(W) AD(       ) 2
 HU2665  NGVD 29 (11/18/05)    8.37   (m)           27.5    (f) RESET       3  
 HU2665
 HU2665.Superseded values are not recommended for survey control.
 HU2665
 HU2665.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2665.See file dsdata.pdf to determine how the superseded data were derived.
 HU2665
 HU2665_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2665_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2665_STAMPING: FRIEND 1955 1986
 HU2665_MARK LOGO: NGS
 HU2665_PROJECTION: FLUSH
 HU2665_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2665_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2665+STABILITY: SURFACE MOTION
 HU2665_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2665+SATELLITE: SATELLITE OBSERVATIONS - November 26, 2005
 HU2665
 HU2665  HISTORY     - Date     Condition        Report By
 HU2665  HISTORY     - 1986     MONUMENTED       NGS
 HU2665  HISTORY     - 1986     GOOD             NGS
 HU2665  HISTORY     - 20051126 GOOD             USPSQD
 HU2665
 HU2665                          STATION DESCRIPTION
 HU2665
 HU2665'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HU2665'THE STATION IS LOCATED ABOUT 4.8 KM (3 MI) NORTH OF BERLIN, 3.2 KM
 HU2665'(2 MI) NORTH-NORTHWEST OF THE INTERSECTION OF U.S. HIGHWAY 113 AND 50,
 HU2665'3.2 KM (2 MI) EAST OF ST. MARTIN AND ON THE NORTH SIDE OF CAREY ROAD
 HU2665'AT THE INTERSECTION OF A RAILROAD CROSSING.  OWNERSHIP--RAILROAD
 HU2665'RIGHT-OF-WAY.
 HU2665'
 HU2665'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAYS 113 AND 50
 HU2665'NEAR THE SMALL TOWN OF BERLIN, GO NORTH FOR 3.05 KM (1.9 MI) ON U.S.
 HU2665'HIGHWAY 113 TO A CROSSROADS.  TURN LEFT AND GO NORTHWEST FOR 0.67 KM
 HU2665'(0.4 MI) ON CAREY ROAD TO THE AZIMUTH MARK ON THE LEFT.  CONTINUE
 HU2665'STRAIGHT AHEAD AND GO NORTHWEST FOR 0.47 KM (0.3 MI) ON CAREY ROAD TO
 HU2665'THE STATION ON THE RIGHT.
 HU2665'
 HU2665'THE STATION IS A STANDARD NGS DISK STAMPED ---FRIEND 1955 1986---, SET
 HU2665'INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER FLUSH WITH
 HU2665'GROUND.  LOCATED 13.4 METERS (43.8 FT) WEST-NORTHWEST FROM THE WEST
 HU2665'RAIL OF THE RAILROAD, 24.0 METERS (78.7 FT) NORTH FROM THE CENTER OF
 HU2665'CAREY ROAD, 31.9 METERS (104.8 FT) NORTH-NORTHEAST FROM A TELEPHONE
 HU2665'POLE NUMBERED 16, 6.5 METERS (21.4 FT) NORTH-NORTHEAST FROM A TWIN
 HU2665'24-INCH OAK TREE, 0.8 METERS (2.8 FT) SOUTHWEST FROM A CARSONITE
 HU2665'WITNESS POST.  THE UNDERGROUND MARK IS A STANDARD NGS DISK STAMPED
 HU2665'---FRIEND 1955---, SET INTO AN IRREGULAR MASS OF CONCRETE 1.1 METERS
 HU2665'BELOW THE SURFACE.
 HU2665'
 HU2665'REFERENCE MARK NO. 1 IS A STANDARD NGS DISK STAMPED
 HU2665'---FRIEND NO 1 1955---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 HU2665'30 CM IN DIAMETER RECESSED 20 CM BELOW GROUND.  LOCATED 4.7 METERS
 HU2665'(15.3 FT) WEST-NORTHWEST FROM THE WEST RAIL OF THE RAILROAD, 7.2
 HU2665'METERS (23.5 FT) NORTH FROM THE CENTER OF CAREY ROAD, 17.9 METERS
 HU2665'(58.8 FT) NORTHEAST FROM THE TELEPHONE POLE AND 12.3 METERS (40.4 FT)
 HU2665'SOUTHEAST FROM THE OAK TREE.  MARK IS 0.7 METERS ABOVE THE STATION.
 HU2665'
 HU2665'REFERENCE MARK NO. 2 IS A STANDARD NGS DISK STAMPED
 HU2665'---FRIEND NO 2 1955---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 HU2665'30 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 5.3 METERS (17.4 FT)
 HU2665'NORTH-NORTHEAST FROM THE CENTER OF CAREY ROAD, 18 METERS (59.1 FT)
 HU2665'NORTHWEST FROM THE TELEPHONE POLE, 2.1 METERS (6.8 FT) SOUTH-SOUTHEAST
 HU2665'FROM THE CENTER OF A DITCH AND 12.8 METERS (42 FT) EAST FROM THE EAST
 HU2665'END OF A CONCRETE CULVERT.  MARK IS 0.4 METERS ABOVE THE STATION.
 HU2665'
 HU2665'AZIMUTH MARK NO. 1 IS A STANDARD NGS DISK STAMPED ---FRIEND 1955---,
 HU2665'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER
 HU2665'RECESSED 12 CM BELOW GROUND.  LOCATED 6.1 METERS (19.9 FT) SOUTHWEST
 HU2665'FROM THE CENTER OF CAREY ROAD, 19.3 METERS (63.3 FT) SOUTH-SOUTHWEST
 HU2665'FROM A TWIN 15-INCH TREE, 42.0 METERS (137.8 FT) NORTHWEST OF A
 HU2665'POWERLINE GUY POLE AND 0.9 METERS (2.8 FT) NORTHWEST FROM A CARSONITE
 HU2665'WITNESS POST.  TO REACH THE AZIMUTH FROM THE STATION, GO SOUTHEAST FOR
 HU2665'0.47 KM (0.3 MI) ON CAREY ROAD TO THE MARK ON THE RIGHT.
 HU2665
 HU2665                          STATION RECOVERY (1986)
 HU2665
 HU2665'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 HU2665'4.7 KM (2.95 MI) NORTH FROM BERLIN.  FROM THE INTERSECTION OF U.S.
 HU2665'HIGHWAYS 50 AND 113 NEAR BERLIN, GO NORTH ON U.S. HIGHWAY 113 FOR 3.05
 HU2665'KM (1.90 MI) TO A CROSSROADS.  TURN LEFT AND GO NORTHWEST ON CAREY
 HU2665'ROAD FOR 1.15 KM (0.70 MI) TO A RAILROAD CROSSING AND THE BENCH MARK,
 HU2665'13.4 M (44.0 FT) WEST-NORTHWEST FROM THE WEST RAIL, 24.0 M (78.7 FT)
 HU2665'NORTH FROM THE CENTER OF CAREY ROAD, 31.9 M (104.7 FT) NORTH-NORTHEAST
 HU2665'FROM A TELEPHONE POLE NUMBERED 16 AND 6.5 M (21.3 FT) NORTH-NORTHEAST
 HU2665'FROM A 24-INCH OAK TREE.  THE MARK IS 0.82 METERS  SW FROM  A WITNESS
 HU2665'POST THE MARK IS 1.0 M BELOW CAREY ROAD.
 HU2665
 HU2665                          STATION RECOVERY (2005)
 HU2665
 HU2665'RECOVERY NOTE BY US POWER SQUADRON 2005 (DHM)
 HU2665'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0247 ***********************************************************************
 HU0247  DESIGNATION -  FRIEND RM 1
 HU0247  PID         -  HU0247
 HU0247  STATE/COUNTY-  MD/WORCESTER
 HU0247  COUNTRY     -  US
 HU0247  USGS QUAD   -  BERLIN (2016)
 HU0247
 HU0247                         *CURRENT SURVEY CONTROL
 HU0247  ______________________________________________________________________
 HU0247* NAD 83(1991) POSITION- 38 22 15.47614(N) 075 12 45.06763(W)   ADJUSTED
 HU0247* NAVD 88 ORTHO HEIGHT -     8.782 (meters)       28.81  (feet) ADJUSTED
 HU0247  ______________________________________________________________________
 HU0247  GEOID HEIGHT    -        -35.968 (meters)                     GEOID18
 HU0247  LAPLACE CORR    -         -0.55  (seconds)                    DEFLEC18
 HU0247  DYNAMIC HEIGHT  -          8.776 (meters)       28.79  (feet) COMP
 HU0247  MODELED GRAVITY -    980,010.6   (mgal)                       NAVD 88
 HU0247
 HU0247  HORZ ORDER      -  THIRD
 HU0247  VERT ORDER      -  SECOND    CLASS 0
 HU0247
 HU0247.The horizontal coordinates were established by classical geodetic methods
 HU0247.and adjusted by the National Geodetic Survey in January 1992.
 HU0247
 HU0247.The orthometric height was determined by differential leveling and
 HU0247.adjusted by the NATIONAL GEODETIC SURVEY
 HU0247.in June 1991.
 HU0247
 HU0247.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0247.GEOID18 height accuracy estimate available here.
 HU0247
 HU0247.Click photographs - Photos may exist for this station.
 HU0247
 HU0247.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0247
 HU0247.The dynamic height is computed by dividing the NAVD 88
 HU0247.geopotential number by the normal gravity value computed on the
 HU0247.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0247.degrees latitude (g = 980.6199 gals.).
 HU0247
 HU0247.The modeled gravity was interpolated from observed gravity values.
 HU0247
 HU0247. The following values were computed from the NAD 83(1991) position.
 HU0247
 HU0247;                    North         East     Units Scale Factor Converg.
 HU0247;SPC MD       -    79,709.413   556,192.919   MT  0.99998841   +1 07 18.8
 HU0247;SPC MD       -   261,513.30  1,824,776.27   sFT  0.99998841   +1 07 18.8
 HU0247;UTM  18      - 4,246,997.098   481,435.791   MT  0.99960424   -0 07 54.9
 HU0247
 HU0247!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0247!SPC MD       -   1.00000427  x   0.99998841  =   0.99999268
 HU0247!UTM  18      -   1.00000427  x   0.99960424  =   0.99960850
 HU0247
 HU0247_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8143546997(NAD 83)
 HU0247
 HU0247                          SUPERSEDED SURVEY CONTROL
 HU0247
 HU0247  NAD 83(1986)-  38 22 15.46130(N)    075 12 45.09475(W) AD(       ) 3
 HU0247  NGVD 29               9.02   (m)           29.6    (f) LEVELING    3  
 HU0247  NGVD 29 (11/26/84)    9.024  (m)           29.61   (f) ADJUSTED    2 0
 HU0247
 HU0247.Superseded values are not recommended for survey control.
 HU0247
 HU0247.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0247.See file dsdata.pdf to determine how the superseded data were derived.
 HU0247
 HU0247_MARKER: DR = REFERENCE MARK DISK
 HU0247_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0247_STAMPING: FRIEND NO 1 1955
 HU0247_MARK LOGO: CGS
 HU0247_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0247+STABILITY: SURFACE MOTION
 HU0247_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0247+SATELLITE: SATELLITE OBSERVATIONS - November 26, 2005
 HU0247
 HU0247  HISTORY     - Date     Condition        Report By
 HU0247  HISTORY     - 1955     MONUMENTED       CGS
 HU0247  HISTORY     - 1967     GOOD             MDSRC
 HU0247  HISTORY     - 1990     GOOD             USPSQD
 HU0247  HISTORY     - 20051126 GOOD             USPSQD
 HU0247
 HU0247                          STATION DESCRIPTION
 HU0247
 HU0247'DESCRIBED BY MD STATE ROADS COMM 1967
 HU0247'3 MI N FROM BERLIN.
 HU0247'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 113 AND U.S. HIGHWAY
 HU0247'50, PROCEED NORTH ON U.S. 113 FOR 2.5 MILES TO THE INTERSECTION OF
 HU0247'MARYLAND ROUTE 452, CONTINUE ON U.S. 113 FOR 0.05 MILE TO A HARD
 HU0247'SURFACE ROAD ON THE LEFT, TURN LEFT ON HARD SURFACE ROAD AND GO
 HU0247'WEST FOR 0.30 MILE AND STATION.  IT IS 22.0 FEET NORTH OF THE
 HU0247'CENTERLINE OF THE HARD SURFACE ROAD AND 15.3 FEET WEST OF THE WEST
 HU0247'RAIL OF THE RAILROAD TRACKS.  A STANDARD DISK SET FLUSH WITH THE
 HU0247'GROUND STAMPED, FRIEND NO. 1 1955.
 HU0247
 HU0247                          STATION RECOVERY (1990)
 HU0247
 HU0247'RECOVERY NOTE BY US POWER SQUADRON 1990 (CBG)
 HU0247'RECOVERED IN GOOD CONDITION.
 HU0247
 HU0247                          STATION RECOVERY (2005)
 HU0247
 HU0247'RECOVERY NOTE BY US POWER SQUADRON 2005 (DHM)
 HU0247'GPS RREADING 38 22.257 N  /  075 12.750 W
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0248 ***********************************************************************
 HU0248  DESIGNATION -  FRIEND RM 2
 HU0248  PID         -  HU0248
 HU0248  STATE/COUNTY-  MD/WORCESTER
 HU0248  COUNTRY     -  US
 HU0248  USGS QUAD   -  BERLIN (2016)
 HU0248
 HU0248                         *CURRENT SURVEY CONTROL
 HU0248  ______________________________________________________________________
 HU0248* NAD 83(1991) POSITION- 38 22 15.16642(N) 075 12 46.07742(W)   ADJUSTED
 HU0248* NAVD 88 ORTHO HEIGHT -     8.381 (meters)       27.50  (feet) ADJUSTED
 HU0248  ______________________________________________________________________
 HU0248  GEOID HEIGHT    -        -35.968 (meters)                     GEOID18
 HU0248  LAPLACE CORR    -         -0.55  (seconds)                    DEFLEC18
 HU0248  DYNAMIC HEIGHT  -          8.376 (meters)       27.48  (feet) COMP
 HU0248  MODELED GRAVITY -    980,010.6   (mgal)                       NAVD 88
 HU0248
 HU0248  HORZ ORDER      -  THIRD
 HU0248  VERT ORDER      -  SECOND    CLASS 0
 HU0248
 HU0248.The horizontal coordinates were established by classical geodetic methods
 HU0248.and adjusted by the National Geodetic Survey in January 1992.
 HU0248
 HU0248.The orthometric height was determined by differential leveling and
 HU0248.adjusted by the NATIONAL GEODETIC SURVEY
 HU0248.in June 1991.
 HU0248
 HU0248.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0248.GEOID18 height accuracy estimate available here.
 HU0248
 HU0248.Click photographs - Photos may exist for this station.
 HU0248
 HU0248.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0248
 HU0248.The dynamic height is computed by dividing the NAVD 88
 HU0248.geopotential number by the normal gravity value computed on the
 HU0248.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0248.degrees latitude (g = 980.6199 gals.).
 HU0248
 HU0248.The modeled gravity was interpolated from observed gravity values.
 HU0248
 HU0248. The following values were computed from the NAD 83(1991) position.
 HU0248
 HU0248;                    North         East     Units Scale Factor Converg.
 HU0248;SPC MD       -    79,699.385   556,168.599   MT  0.99998843   +1 07 18.1
 HU0248;SPC MD       -   261,480.40  1,824,696.48   sFT  0.99998843   +1 07 18.1
 HU0248;UTM  18      - 4,246,987.608   481,411.267   MT  0.99960426   -0 07 55.5
 HU0248
 HU0248!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0248!SPC MD       -   1.00000433  x   0.99998843  =   0.99999276
 HU0248!UTM  18      -   1.00000433  x   0.99960426  =   0.99960859
 HU0248
 HU0248_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8141146987(NAD 83)
 HU0248
 HU0248                          SUPERSEDED SURVEY CONTROL
 HU0248
 HU0248  NAD 83(1986)-  38 22 15.15137(N)    075 12 46.10426(W) AD(       ) 3
 HU0248  NGVD 29               8.62   (m)           28.3    (f) LEVELING    3  
 HU0248  NGVD 29 (11/26/84)    8.623  (m)           28.29   (f) ADJUSTED    2 0
 HU0248
 HU0248.Superseded values are not recommended for survey control.
 HU0248
 HU0248.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0248.See file dsdata.pdf to determine how the superseded data were derived.
 HU0248
 HU0248_MARKER: DR = REFERENCE MARK DISK
 HU0248_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0248_STAMPING: FRIEND NO 2 1955
 HU0248_MARK LOGO: CGS
 HU0248_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0248+STABILITY: SURFACE MOTION
 HU0248
 HU0248  HISTORY     - Date     Condition        Report By
 HU0248  HISTORY     - 1955     MONUMENTED       CGS
 HU0248  HISTORY     - 1967     GOOD             MDSRC
 HU0248
 HU0248                          STATION DESCRIPTION
 HU0248
 HU0248'DESCRIBED BY MD STATE ROADS COMM 1967
 HU0248'3 MI N FROM BERLIN.
 HU0248'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 113 AND U.S. HIGHWAY
 HU0248'50, PROCEED NORTH ON U.S. 113 FOR 2.5 MILES TO THE INTERSECTION OF
 HU0248'MARYLAND ROUTE 452, CONTINUE ON U.S. 113 FOR 0.05 MILE TO A HARD
 HU0248'SURFACE ROAD ON THE LEFT, TURN LEFT ON HARD SURFACE ROAD AND GO
 HU0248'WEST FOR 0.30 MILE AND STATION.  IT IS 53.0 FEET EAST OF THE
 HU0248'CENTERLINE OF A DRIVEWAY AND 19.0 FEET NORTH OF THE CENTERLINE OF
 HU0248'THE HARD SURFACE ROAD.  A STANDARD DISK SET FLUSH WITH THE GROUND
 HU0248'STAMPED, FRIEND NO. 2 1955.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7586 ***********************************************************************
 HV7586  DESIGNATION -  FRIENDLY
 HV7586  PID         -  HV7586
 HV7586  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7586  COUNTRY     -  US
 HV7586  USGS QUAD   -  ANACOSTIA (2016)
 HV7586
 HV7586                         *CURRENT SURVEY CONTROL
 HV7586  ______________________________________________________________________
 HV7586* NAD 83(1993) POSITION- 38 45 10.87653(N) 076 58 43.26240(W)   ADJUSTED
 HV7586* NAVD 88 ORTHO HEIGHT -    75.0   (meters)      246.    (feet) VERTCON3
 HV7586  ______________________________________________________________________
 HV7586  GEOID HEIGHT    -        -32.428 (meters)                     GEOID18
 HV7586  LAPLACE CORR    -         -3.05  (seconds)                    DEFLEC18
 HV7586  HORZ ORDER      -  FIRST
 HV7586
 HV7586.The horizontal coordinates were established by classical geodetic methods
 HV7586.and adjusted by the National Geodetic Survey in November 1994.
 HV7586
 HV7586.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7586.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7586
 HV7586.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7586.GEOID18 height accuracy estimate available here.
 HV7586
 HV7586.Click photographs - Photos may exist for this station.
 HV7586
 HV7586.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7586
 HV7586. The following values were computed from the NAD 83(1993) position.
 HV7586
 HV7586;                    North         East     Units Scale Factor Converg.
 HV7586;SPC MD       -   120,589.896   401,852.842   MT  0.99995213   +0 00 48.2
 HV7586;SPC MD       -   395,635.35  1,318,412.20   sFT  0.99995213   +0 00 48.2
 HV7586;UTM  18      - 4,291,228.521   328,060.754   MT  0.99996405   -1 14 20.0
 HV7586
 HV7586!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7586!SPC MD       -   0.99999333  x   0.99995213  =   0.99994546
 HV7586!UTM  18      -   0.99999333  x   0.99996405  =   0.99995738
 HV7586
 HV7586:                Primary Azimuth Mark                     Grid Az
 HV7586:SPC MD       -  HYDE                                     109 32 50.5
 HV7586:UTM  18      -  HYDE                                     110 47 58.7
 HV7586
 HV7586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2806091228(NAD 83)
 HV7586
 HV7586|---------------------------------------------------------------------|
 HV7586| PID    Reference Object                     Distance      Geod. Az  |
 HV7586|                                                           dddmmss.s |
 HV7586| HV7588 HENSON VALLEY CHRISTIAN CH          APPROX. 2.7 KM 0075820.4 |
 HV7586| HV7618 TUCKER ROAD PEPCO MICROWAVE         APPROX. 2.8 KM 0373826.9 |
 HV7586| CX2786 FRIENDLY RM 1                        66.751 METERS 04510     |
 HV7586| CX2788 FRIENDLY RM 3                                      0880052.4 |
 HV7586| HV7429 HYDE                                APPROX. 4.6 KM 1093338.7 |
 HV7586| CX2787 FRIENDLY RM 2                        30.809 METERS 15627     |
 HV7586|---------------------------------------------------------------------|
 HV7586
 HV7586                          SUPERSEDED SURVEY CONTROL
 HV7586
 HV7586  NAD 83(1991)-  38 45 10.87539(N)    076 58 43.26319(W) AD(       ) 1
 HV7586  NAD 83(1986)-  38 45 10.87499(N)    076 58 43.27629(W) AD(       ) 1
 HV7586  NAD 27      -  38 45 10.46397(N)    076 58 44.36609(W) AD(       ) 1
 HV7586  NGVD 29 (07/19/86)   75.2    (m)          247.     (f) VERT ANG       
 HV7586
 HV7586.Superseded values are not recommended for survey control.
 HV7586
 HV7586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7586.See file dsdata.pdf to determine how the superseded data were derived.
 HV7586
 HV7586_MARKER: DS = TRIANGULATION STATION DISK
 HV7586_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7586_STAMPING: FRIENDLY 1970
 HV7586_MARK LOGO: CGS
 HV7586_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7586+STABILITY: SURFACE MOTION
 HV7586
 HV7586  HISTORY     - Date     Condition        Report By
 HV7586  HISTORY     - 1970     MONUMENTED       NGS
 HV7586
 HV7586                          STATION DESCRIPTION
 HV7586
 HV7586'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7586'THE STATION IS ABOUT 4-1/2 MILES WEST-SOUTHWEST OF CLINTON, 3-3/4
 HV7586'MILES SOUTH-SOUTHEAST OF OXON HILL, 3-1/4 MILES EAST OF THE
 HV7586'MARYLAND-VIRGINIA STATE LINE, AND ON THE PROPERTY OF DAVID L.
 HV7586'WOCKLEY, 10110 OLD FORT ROAD, FRIENDLY MARYLAND.
 HV7586'
 HV7586'TO REACH THE STATION FROM THE INTERCHANGE OF INTERSTATE HIGHWAY 495
 HV7586'AND STATE HIGHWAY 210, INDIAN HEAD HIGHWAY, AT OXON HILL, GO SOUTH
 HV7586'ON INDIAN HEAD HIGHWAY FOR 3.25 MILES TO A CROSSROAD, OLD FORT ROAD.
 HV7586'TURN LEFT AND GO EAST-SOUTHEAST ON OLD FORT ROAD FOR 0.8 MILE TO
 HV7586'A DRIVEWAY ON THE LEFT AT 10110 OLD FORT ROAD.  TURN LEFT, THEN
 HV7586'IMMEDIATELY RIGHT, PASSING THROUGH A GATE, THEN IMMEDIATELY
 HV7586'LEFT AND GO NORTH THROUGH AN ORCHARD FOR 0.1 MILE TO THE STATION AT
 HV7586'THE NORTH EDGE OF THE ORCHARD.
 HV7586'
 HV7586'THE STATION MARK IS A STANDARD DISK, STAMPED FRIENDLY 1970, SET IN
 HV7586'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7586'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 131.4 FEET EAST-NORTHEAST
 HV7586'OF THE EAST CORNER OF A 10 FOOT TALL, OUTDOOR, BRICK FIREPLACE AND
 HV7586'116.0 FEET NORTHEAST OF THE NORTH END OF A FENCE.
 HV7586'
 HV7586'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED FRIENDLY NO 1 1970, SET
 HV7586'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV7586'FLUSH WITH THE GROUND.  IT IS AT THE SOUTHWEST EDGE OF A GROVE OF
 HV7586'PINE TREES AND IS ABOUT 2 FEET HIGHER IN ELEVATION THAN THE
 HV7586'STATION.
 HV7586'
 HV7586'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED FRIENDLY NO 2 1970, SET
 HV7586'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7586'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 152 FEET EAST OF THE EAST
 HV7586'CORNER OF A CINDERBLOCK GARAGE, 151 FEET EAST-SOUTHEAST OF THE
 HV7586'BRICK FIREPLACE, 15.5 FEET EAST OF A CHERRY TREE AND ABOUT THE SAME
 HV7586'ELEVATION AS THE STATION.
 HV7586'
 HV7586'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED FRIENDLY NO 3 1970, SET
 HV7586'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7586'PROJECTS 5 INCHES ABOVE THE GROUND.  IT IS 15.0 FEET WEST OF THE
 HV7586'CENTERLINE OF A GRAVELED ROAD, 1.5 FEET SOUTH OF A WITNESS POST
 HV7586'AND AT THE NORTHEAST CORNER OF AN OPEN FIELD.
 HV7586'
 HV7586'NOTE--THE UNDERGROUND MARK IS 42 INCHES BELOW THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5833 ***********************************************************************
 JV5833  DESIGNATION -  FRIENDSHIP
 JV5833  PID         -  JV5833
 JV5833  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5833  COUNTRY     -  US
 JV5833  USGS QUAD   -  RELAY (2016)
 JV5833
 JV5833                         *CURRENT SURVEY CONTROL
 JV5833  ______________________________________________________________________
 JV5833* NAD 83(1991) POSITION- 39 10 45.05606(N) 076 40 06.17806(W)   ADJUSTED
 JV5833* NAVD 88 ORTHO HEIGHT -    46.    (meters)      151.    (feet) SCALED
 JV5833  ______________________________________________________________________
 JV5833  GEOID HEIGHT    -        -32.697 (meters)                     GEOID18
 JV5833  LAPLACE CORR    -         -5.44  (seconds)                    DEFLEC18
 JV5833  HORZ ORDER      -  FIRST
 JV5833
 JV5833.The horizontal coordinates were established by classical geodetic methods
 JV5833.and adjusted by the National Geodetic Survey in January 1992.
 JV5833
 JV5833.The orthometric height was scaled from a topographic map.
 JV5833
 JV5833.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5833.GEOID18 height accuracy estimate available here.
 JV5833
 JV5833.Click photographs - Photos may exist for this station.
 JV5833
 JV5833.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5833
 JV5833. The following values were computed from the NAD 83(1991) position.
 JV5833
 JV5833;                    North         East     Units Scale Factor Converg.
 JV5833;SPC MD       -   167,949.709   428,653.111   MT  0.99996383   +0 12 29.3
 JV5833;SPC MD       -   551,015.00  1,406,339.42   sFT  0.99996383   +0 12 29.3
 JV5833;UTM  18      - 4,337,986.621   355,892.736   MT  0.99985570   -1 03 15.0
 JV5833
 JV5833!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5833!SPC MD       -   0.99999795  x   0.99996383  =   0.99996178
 JV5833!UTM  18      -   0.99999795  x   0.99985570  =   0.99985365
 JV5833
 JV5833:                Primary Azimuth Mark                     Grid Az
 JV5833:SPC MD       -  SHIPLEY                                  243 57 42.4
 JV5833:UTM  18      -  SHIPLEY                                  245 13 26.7
 JV5833
 JV5833_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5589237986(NAD 83)
 JV5833
 JV5833|---------------------------------------------------------------------|
 JV5833| PID    Reference Object                     Distance      Geod. Az  |
 JV5833|                                                           dddmmss.s |
 JV5833| JV5824 LINTHICUM HEIGHTS MUN TANK          APPROX. 2.8 KM 0265945.5 |
 JV5833| JV5820 FERNDALE STANDPIPE                  APPROX. 2.9 KM 0581148.6 |
 JV5833| JV5822 GLEN BURNIE TANK                    APPROX. 4.0 KM 1241056.2 |
 JV5833| JV5821 NEW YORK WASHINGTON AWY BCN 58      APPROX. 4.0 KM 1561528.9 |
 JV5833| JV5834 FORT MEADE BIG TANK                 APPROX. 8.3 KM 2265543.9 |
 JV5833| JV5835 SHIPLEY                             APPROX. 4.2 KM 2441011.7 |
 JV5833|---------------------------------------------------------------------|
 JV5833
 JV5833                          SUPERSEDED SURVEY CONTROL
 JV5833
 JV5833  NAD 83(1986)-  39 10 45.05306(N)    076 40 06.18767(W) AD(       ) 1
 JV5833  NAD 27      -  39 10 44.66400(N)    076 40 07.30400(W) AD(       ) 1
 JV5833
 JV5833.Superseded values are not recommended for survey control.
 JV5833
 JV5833.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5833.See file dsdata.pdf to determine how the superseded data were derived.
 JV5833
 JV5833_MARKER: DS = TRIANGULATION STATION DISK
 JV5833_SETTING: 0 = UNSPECIFIED SETTING
 JV5833_STAMPING: FRIENDSHIP 1950
 JV5833_MARK LOGO: CGS
 JV5833_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5833
 JV5833  HISTORY     - Date     Condition        Report By
 JV5833  HISTORY     - 1950     MONUMENTED       CGS
 JV5833  HISTORY     - 1975     GOOD             NGS
 JV5833  HISTORY     - 1977     GOOD             NGS
 JV5833  HISTORY     - 1983     SEE DESCRIPTION  NGS
 JV5833
 JV5833                          STATION DESCRIPTION
 JV5833
 JV5833'DESCRIBED BY COAST AND GEODETIC SURVEY 1950 (MLC)
 JV5833'THE STATION IS LOCATED IN THE CENTER OF THE ROOF OF THE CONTROL
 JV5833'TOWER OF FRIENDSHIP INTERNATIONAL AIRPORT.  IT IS ABOUT 8 MILES S
 JV5833'OF THE CITY OF BALTIMORE, 2 MILES NW OF GLEN BERNIE, 2 MILES SSW
 JV5833'OF LINTHICUM, AND 6 MILES E OF THE INTERSECTION OF U.S. HIGHWAY
 JV5833'1 AND STATE HIGHWAY 176.  IT IS A STANDARD DISK SET FLUSH WITH
 JV5833'THE RAISED CONCRETE PLATFORM AND IS STAMPED FRIENDSHIP 1950.
 JV5833'
 JV5833'NO REFERENCE OR AZIMUTH MARKS WERE SET.  SHIPLEY 1933 WHICH IS
 JV5833'ABOUT 2 MILES SW OF THE STATION AND IS EASILY VISIBLE MAY BE USED
 JV5833'AS AN AZIMUTH MARK.
 JV5833'
 JV5833'TO REACH THE STATION FROM LINTHICUM FOLLOW STATE HIGHWAY 170 SSW
 JV5833'TO THE AIRPORT AND THE CONTROL TOWER AS DESCRIBED.
 JV5833'
 JV5833'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 1 AND STATE
 JV5833'HIGHWAY 176 GO E ON HIGHWAY 176 TO THE AIRPORT AND THE CONTROL
 JV5833'TOWER AS DESCRIBED.
 JV5833'
 JV5833'CAA PERSONNEL AT THE CONTROL TOWER SHOULD BE CONTACTED BEFORE
 JV5833'USING THE STATION.
 JV5833'
 JV5833'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV5833
 JV5833                          STATION RECOVERY (1975)
 JV5833
 JV5833'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (PDC)
 JV5833'THE STATION WAS RECOVERED AS DESCRIBED AND IN GOOD CONDITION.
 JV5833'
 JV5833'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5833'AT BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT.
 JV5833
 JV5833                          STATION RECOVERY (1977)
 JV5833
 JV5833'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (DRM)
 JV5833'STATION IS LOCATED ATOP THE CONTROL TOWER AT THE AIRPORT WHICH IS
 JV5833'TO BE REBUILT WITHIN THE NEXT TWO YEARS.  AIRPORT OFFICIALS WOULD
 JV5833'LIKE TO HAVE THIS MARK REESTABLISHED WHEN THE NEW TOWER IS
 JV5833'COMPLETED.
 JV5833'
 JV5833'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--AT THE
 JV5833'BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT.
 JV5833
 JV5833                          STATION RECOVERY (1983)
 JV5833
 JV5833'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 (MLS)
 JV5833'THE STATION WAS DESTROYED WHEN THE CONTROL TOWER ROOF WAS REBUILT.
 JV5833'
 JV5833'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--AT
 JV5833'BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6595 ***********************************************************************
 DL6595  DESIGNATION -  FRIENDSHIP AZ MK
 DL6595  PID         -  DL6595
 DL6595  STATE/COUNTY-  MD/HOWARD
 DL6595  COUNTRY     -  US
 DL6595  USGS QUAD   -  SYKESVILLE (2016)
 DL6595
 DL6595                         *CURRENT SURVEY CONTROL
 DL6595  ______________________________________________________________________
 DL6595* NAD 83(1986) POSITION- 39 17 43.1    (N) 076 57 11.6    (W)   HD_HELD2
 DL6595* NAVD 88 ORTHO HEIGHT -   141.354 (meters)      463.76  (feet) ADJUSTED
 DL6595  ______________________________________________________________________
 DL6595  GEOID HEIGHT    -        -31.960 (meters)                     GEOID18
 DL6595  DYNAMIC HEIGHT  -        141.279 (meters)      463.51  (feet) COMP
 DL6595  MODELED GRAVITY -    980,092.4   (mgal)                       NAVD 88
 DL6595
 DL6595  VERT ORDER      -  SECOND    CLASS I
 DL6595
 DL6595.The horizontal coordinates were established by autonomous hand held GPS
 DL6595.observations and have an estimated accuracy of +/- 10 meters.
 DL6595
 DL6595.The orthometric height was determined by differential leveling and
 DL6595.adjusted by the NATIONAL GEODETIC SURVEY
 DL6595.in March 2010.
 DL6595
 DL6595.No vertical observational check was made to the station.
 DL6595
 DL6595.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6595.GEOID18 height accuracy estimate available here.
 DL6595
 DL6595.Click photographs - Photos may exist for this station.
 DL6595
 DL6595.The dynamic height is computed by dividing the NAVD 88
 DL6595.geopotential number by the normal gravity value computed on the
 DL6595.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6595.degrees latitude (g = 980.6199 gals.).
 DL6595
 DL6595.The modeled gravity was interpolated from observed gravity values.
 DL6595
 DL6595;                    North         East    Units  Estimated Accuracy
 DL6595;SPC MD       -   180,790.      404,035.      MT  (+/- 10 meters HH2 GPS)
 DL6595
 DL6595_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3156551366(NAD 83)
 DL6595
 DL6595                          SUPERSEDED SURVEY CONTROL
 DL6595
 DL6595.No superseded survey control is available for this station.
 DL6595
 DL6595_MARKER: DD = SURVEY DISK
 DL6595_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DL6595_STAMPING: FRIENDSHIP AZ. 1962
 DL6595_MARK LOGO: MDSHA
 DL6595_PROJECTION: PROJECTING 3 CENTIMETERS
 DL6595_MAGNETIC: N = NO MAGNETIC MATERIAL
 DL6595_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6595+STABILITY: SURFACE MOTION
 DL6595_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DL6595+SATELLITE: SATELLITE OBSERVATIONS - May 25, 2007
 DL6595
 DL6595  HISTORY     - Date     Condition        Report By
 DL6595  HISTORY     - 1962     MONUMENTED       MDBCSM
 DL6595  HISTORY     - 20070525 GOOD             MDSHA
 DL6595
 DL6595                          STATION DESCRIPTION
 DL6595
 DL6595'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6595'THE STATION IS LOCATED ABOUT 3.9 MI (6.3 KM) EAST-SOUTHEAST OF
 DL6595'COOKSVILLE, 3.1 MI (5.0 KM) NORTHEAST OF GLENEIG AND 0.4 MI (0.6 KM)
 DL6595'SOUTH OF WEST FRIENDSHIP.
 DL6595'
 DL6595'TO REACH FROM THE INTERSTATE 70 BRIDGES AT STATE HIGHWAY 32, GO SOUTH
 DL6595'ALONG STATE HIGHWAY 32 FOR 0.95 MI (1.5 KM) TO AN OVERGROWN WOODS
 DL6595'ENTRANCE LEADING EAST AND THE STATION ON THE LEFT.
 DL6595'
 DL6595'IT IS 43.4 FT (13.2 M) EAST OF THE CENTERLINE OF THE HIGHWAY, 80.0 FT
 DL6595'(24.4 M) NORTH OF THE EAST END OF A 30 INCH (76 CM) CONCRETE PIPE
 DL6595'RUNNING UNDER THE HIGHWAY, 15.5 FT (4.7 M) NORTHEAST OF THE NORTH END
 DL6595'OF CORRUGATED METAL PIPE RUNNING UNDER THE DIRT ENTRANCE, 1.0 FT (0.3
 DL6595'M) WEST OF A FIBERGLASS WITNESS POST AND SET IN THE TOP OF A 8-INCH
 DL6595'(20 CM) ROUND CONCRETE MONUMENT ABOUT 5 FT (1.5 M) HIGHER THAN THE
 DL6595'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DL6594 ***********************************************************************
 DL6594  DESIGNATION -  FRIENDSHIP RESET
 DL6594  PID         -  DL6594
 DL6594  STATE/COUNTY-  MD/HOWARD
 DL6594  COUNTRY     -  US
 DL6594  USGS QUAD   -  SYKESVILLE (2016)
 DL6594
 DL6594                         *CURRENT SURVEY CONTROL
 DL6594  ______________________________________________________________________
 DL6594* NAD 83(1986) POSITION- 39 18 09.0    (N) 076 57 09.9    (W)   HD_HELD2
 DL6594* NAVD 88 ORTHO HEIGHT -   147.189 (meters)      482.90  (feet) ADJUSTED
 DL6594  ______________________________________________________________________
 DL6594  GEOID HEIGHT    -        -31.956 (meters)                     GEOID18
 DL6594  DYNAMIC HEIGHT  -        147.111 (meters)      482.65  (feet) COMP
 DL6594  MODELED GRAVITY -    980,093.5   (mgal)                       NAVD 88
 DL6594
 DL6594  VERT ORDER      -  SECOND    CLASS I
 DL6594
 DL6594.The horizontal coordinates were established by autonomous hand held GPS
 DL6594.observations and have an estimated accuracy of +/- 10 meters.
 DL6594
 DL6594.The orthometric height was determined by differential leveling and
 DL6594.adjusted by the NATIONAL GEODETIC SURVEY
 DL6594.in March 2010.
 DL6594
 DL6594.No vertical observational check was made to the station.
 DL6594
 DL6594.Significant digits in the geoid height do not necessarily reflect accuracy.
 DL6594.GEOID18 height accuracy estimate available here.
 DL6594
 DL6594.Click photographs - Photos may exist for this station.
 DL6594
 DL6594.The dynamic height is computed by dividing the NAVD 88
 DL6594.geopotential number by the normal gravity value computed on the
 DL6594.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DL6594.degrees latitude (g = 980.6199 gals.).
 DL6594
 DL6594.The modeled gravity was interpolated from observed gravity values.
 DL6594
 DL6594;                    North         East    Units  Estimated Accuracy
 DL6594;SPC MD       -   181,589.      404,076.      MT  (+/- 10 meters HH2 GPS)
 DL6594
 DL6594_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3162352164(NAD 83)
 DL6594
 DL6594                          SUPERSEDED SURVEY CONTROL
 DL6594
 DL6594.No superseded survey control is available for this station.
 DL6594
 DL6594_MARKER: DD = SURVEY DISK
 DL6594_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DL6594_SP_SET: HEADWALL
 DL6594_STAMPING: FRIENDSHIP 1962 1986
 DL6594_MARK LOGO: MDSHA
 DL6594_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DL6594_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DL6594+STABILITY: SURFACE MOTION
 DL6594_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DL6594+SATELLITE: SATELLITE OBSERVATIONS - May 25, 2007
 DL6594
 DL6594  HISTORY     - Date     Condition        Report By
 DL6594  HISTORY     - 1986     MONUMENTED       MDSHA
 DL6594  HISTORY     - 20070525 GOOD             MDSHA
 DL6594
 DL6594                          STATION DESCRIPTION
 DL6594
 DL6594'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 DL6594'THE STATION IS LOCATED ABOUT 3.8 MI (6.1 KM) EAST-SOUTHEAST OF
 DL6594'COOKSVILLE, 3.4 MI (5.5 KM) NORTHEAST OF GLENEIG AND IN THE TOWN OF
 DL6594'WEST FRIENDSHIP AT THE INTERSECTION OF STATE HIGHWAY 32 AND STATE
 DL6594'HIGHWAY 144.
 DL6594'
 DL6594'IT IS SET IN A DRILL HOLE IN A L-SHAPED CONCRETE HEADWALL, 45.5 FT
 DL6594'(13.9 M) EAST OF THE CENTERLINE OF STATE HIGHWAY 32, 71.5 FT (21.8 M)
 DL6594'SOUTH OF THE CENTERLINE OF STATE HIGHWAY 144, 44.5 FT (13.6 M)
 DL6594'SOUTHWEST OF TELEPHONE POLE NUMBER 738, 65.5 FT (20.0 M) NORTH OF A
 DL6594'POWER POLE NUMBER 487184, 9.0 FT (2.7 M) NORTH OF THE SOUTH END OF THE
 DL6594'HEADWALL AND ABOUT 2 FT (0.6 M) LOWER THAN STATE HIGHWAY 32.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DE9120 ***********************************************************************
 DE9120  DESIGNATION -  FRITZ
 DE9120  PID         -  DE9120
 DE9120  STATE/COUNTY-  MD/SOMERSET
 DE9120  COUNTRY     -  US
 DE9120  USGS QUAD   -  MARION (2016)
 DE9120
 DE9120                         *CURRENT SURVEY CONTROL
 DE9120  ______________________________________________________________________
 DE9120* NAD 83(2011) POSITION- 38 00 59.74442(N) 075 49 21.89576(W)   ADJUSTED
 DE9120* NAD 83(2011) ELLIP HT-   -35.737 (meters)        (02/16/16)   ADJUSTED
 DE9120* NAD 83(2011) EPOCH   -  2010.00
 DE9120* NAVD 88 ORTHO HEIGHT -     0.317 (meters)        1.04  (feet) ADJUSTED
 DE9120  ______________________________________________________________________
 DE9120  GEOID HEIGHT    -        -36.075 (meters)                     GEOID18
 DE9120  NAD 83(2011) X  -  1,232,270.239 (meters)                     COMP
 DE9120  NAD 83(2011) Y  - -4,878,027.917 (meters)                     COMP
 DE9120  NAD 83(2011) Z  -  3,906,873.360 (meters)                     COMP
 DE9120  LAPLACE CORR    -         -1.72  (seconds)                    DEFLEC18
 DE9120  DYNAMIC HEIGHT  -          0.317 (meters)        1.04  (feet) COMP
 DE9120  MODELED GRAVITY -    979,975.3   (mgal)                       NAVD 88
 DE9120
 DE9120  VERT ORDER      -  SECOND    CLASS I
 DE9120
 DE9120  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DE9120  Standards:
 DE9120         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DE9120            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DE9120  -------------------------------------------------------------------
 DE9120  NETWORK    0.70   1.57           0.31   0.25   0.80     -0.27844847
 DE9120  -------------------------------------------------------------------
 DE9120  Click here for local accuracies and other accuracy information.
 DE9120
 DE9120.The horizontal coordinates were established by GPS observations
 DE9120.and adjusted by the ARCHER-SHEE LAND SURVEYING in February 2016.
 DE9120
 DE9120.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DE9120.been affixed to the stable North American tectonic plate. See 
 DE9120.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DE9120
 DE9120.The horizontal coordinates are valid at the epoch date displayed above
 DE9120.which is a decimal equivalence of Year/Month/Day.
 DE9120
 DE9120.The orthometric height was determined by differential leveling and
 DE9120.adjusted by the NATIONAL GEODETIC SURVEY
 DE9120.in February 2003.
 DE9120
 DE9120.Significant digits in the geoid height do not necessarily reflect accuracy.
 DE9120.GEOID18 height accuracy estimate available here.
 DE9120
 DE9120.Click photographs - Photos may exist for this station.
 DE9120
 DE9120.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DE9120
 DE9120.The Laplace correction was computed from DEFLEC18 derived deflections.
 DE9120
 DE9120.The ellipsoidal height was determined by GPS observations
 DE9120.and is referenced to NAD 83.
 DE9120
 DE9120.The dynamic height is computed by dividing the NAVD 88
 DE9120.geopotential number by the normal gravity value computed on the
 DE9120.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DE9120.degrees latitude (g = 980.6199 gals.).
 DE9120
 DE9120.The modeled gravity was interpolated from observed gravity values.
 DE9120
 DE9120. The following values were computed from the NAD 83(2011) position.
 DE9120
 DE9120;                    North         East     Units Scale Factor Converg.
 DE9120;SPC MD       -    39,510.828   503,381.041   MT  1.00006138   +0 44 20.0
 DE9120;SPC MD       -   129,628.44  1,651,509.30   sFT  1.00006138   +0 44 20.0
 DE9120;UTM  18      - 4,207,975.713   427,780.528   MT  0.99966424   -0 30 24.3
 DE9120
 DE9120!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DE9120!SPC MD       -   1.00000561  x   1.00006138  =   1.00006699
 DE9120!UTM  18      -   1.00000561  x   0.99966424  =   0.99966985
 DE9120
 DE9120:                Primary Azimuth Mark                     Grid Az
 DE9120:SPC MD       -  D 201                                    086 00 37.4
 DE9120:UTM  18      -  D 201                                    087 15 21.7
 DE9120
 DE9120_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2778007975(NAD 83)
 DE9120
 DE9120|---------------------------------------------------------------------|
 DE9120| PID    Reference Object                     Distance      Geod. Az  |
 DE9120|                                                           dddmmss.s |
 DE9120| DE9119 D 201                               414.545 METERS 0864457.4 |
 DE9120|---------------------------------------------------------------------|
 DE9120
 DE9120                          SUPERSEDED SURVEY CONTROL
 DE9120
 DE9120.No superseded survey control is available for this station.
 DE9120
 DE9120_MARKER: F = FLANGE-ENCASED ROD
 DE9120_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DE9120_STAMPING: FRITZ 2002
 DE9120_MARK LOGO: NGS
 DE9120_PROJECTION: FLUSH
 DE9120_MAGNETIC: N = NO MAGNETIC MATERIAL
 DE9120_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DE9120_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DE9120+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2015
 DE9120_ROD/PIPE-DEPTH: 21.9 meters
 DE9120_SLEEVE-DEPTH  : 0.9 meters
 DE9120
 DE9120  HISTORY     - Date     Condition        Report By
 DE9120  HISTORY     - 2002     MONUMENTED       NGS
 DE9120  HISTORY     - 20051026 GOOD             NGS
 DE9120  HISTORY     - 20150514 GOOD             ARCSHE
 DE9120
 DE9120                          STATION DESCRIPTION
 DE9120
 DE9120'DESCRIBED BY NATIONAL GEODETIC SURVEY 2002 (DBC)
 DE9120'TO REACH THE STATION FROM THE INTERSECTIONS OF MARYLAND
 DE9120'AVENUE/RICHARDSON AVENUE (US HIGHWAY 413) SOMERSET AVENUE AND
 DE9120'JACKSONVILLE ROAD NEAR THE CITY WATER TANK IN CRISFIELD.  GO 1.95
 DE9120'MILES (3.14 KM) NORTHEASTERLY ALONG JACKSONVILLE ROAD TO THE JUNCTION
 DE9120'OF CHARLES BRIDDELL DRIVE/AVIATORS WAY (ENTRANCE ROAD TO THE
 DE9120'CRISFIELD-SOMERSET COUNTY AIRPORT) ON THE LEFT, TURN LEFT NORTHERLY ON
 DE9120'THE AIRPORT ENTRANCE ROAD FOR 0.25 MILES (0.40 KM) TO THE AIRPORT
 DE9120'TERMINAL BUILDING STRAIGHT AHEAD AND THE FUEL FARM ON THE LEFT, BEAR
 DE9120'LEFT THEN RIGHT AROUND THE FUEL FARM TO THE FRONT OF THE TERMINAL
 DE9120'BUILDING TO THE JUNCTION OF A TAXIWAY LEADING NORTHEAST TO RUNWAY 32,
 DE9120'GO NORTHEAST ON THE TAXIWAY FOR 0.05 MILES (0.08 KM) TO THE JUNCTION
 DE9120'OF THE RUNWAY, TURN RIGHT, SOUTHEAST ON THE RUNWAY FOR 0.2 MILES (0.3
 DE9120'KM) TO THE END OF RUNWAY 32, TURN LEFT NORTHEAST ON AN OPEN FIELD FOR
 DE9120'ABOUT TO THE NORTHEAST SIDE OF THE VASI LIGHTS.  THE STATION IS THE
 DE9120'TOP OF AN NGS STAINLESS STEEL ROD DRIVEN TO REFUSAL INCASED IN A 5
 DE9120'INCH PVC PIPE WITH AN ALUMINUM NGS LOGO CAP.  LOCATED 8.5 FEET (2.6 M)
 DE9120'NORTHEAST OF THE NORTHEAST FACE OF THE VASI LIGHTS AND 7.7 FEET (2.3
 DE9120'M) NORTHEAST OF AN NGS FIBERGLASS WITNESS POST. MARK IS 1.0 FOOT (0.3
 DE9120'M) LOWER THAN RUNWAY 14.  85.0 FEET (25.9 M) EAST NORTHEAST OF
 DE9120'NORTHEAST CORNER OF RUNWAY 14. NOTE--ACCESS TO THE DATUM POINT IS
 DE9120'THROUGH A 5-INCH LOGO CAP.  THE SLEEVE DEPTH DOES NOT MEET THE
 DE9120'SPECIFICATIONS FOR A CLASS A MARK.
 DE9120
 DE9120                          STATION RECOVERY (2005)
 DE9120
 DE9120'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DE9120'RECOVERED AS DESCRIBED.
 DE9120
 DE9120                          STATION RECOVERY (2015)
 DE9120
 DE9120'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 DE9120'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1891 ***********************************************************************
 HU1891  DESIGNATION -  FROG
 HU1891  PID         -  HU1891
 HU1891  STATE/COUNTY-  MD/DORCHESTER
 HU1891  COUNTRY     -  US
 HU1891  USGS QUAD   -  DEAL ISLAND (2016)
 HU1891
 HU1891                         *CURRENT SURVEY CONTROL
 HU1891  ______________________________________________________________________
 HU1891* NAD 83(1991) POSITION- 38 14 11.17757(N) 075 56 54.31177(W)   ADJUSTED
 HU1891* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1891  ______________________________________________________________________
 HU1891  GEOID HEIGHT    -        -35.688 (meters)                     GEOID18
 HU1891  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 HU1891  HORZ ORDER      -  THIRD
 HU1891
 HU1891.The horizontal coordinates were established by classical geodetic methods
 HU1891.and adjusted by the National Geodetic Survey in January 1992.
 HU1891
 HU1891.The orthometric height was scaled from a topographic map.
 HU1891
 HU1891.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1891.GEOID18 height accuracy estimate available here.
 HU1891
 HU1891.Click photographs - Photos may exist for this station.
 HU1891
 HU1891.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1891
 HU1891. The following values were computed from the NAD 83(1991) position.
 HU1891
 HU1891;                    North         East     Units Scale Factor Converg.
 HU1891;SPC MD       -    63,777.623   492,064.571   MT  1.00001167   +0 39 36.0
 HU1891;SPC MD       -   209,243.75  1,614,381.85   sFT  1.00001167   +0 39 36.0
 HU1891;UTM  18      - 4,232,474.050   416,998.424   MT  0.99968484   -0 35 13.3
 HU1891
 HU1891!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1891!SPC MD       -   1.00000564  x   1.00001167  =   1.00001731
 HU1891!UTM  18      -   1.00000564  x   0.99968484  =   0.99969048
 HU1891
 HU1891:                Primary Azimuth Mark                     Grid Az
 HU1891:SPC MD       -  CRAB 1907                                222 35 04.8
 HU1891:UTM  18      -  CRAB 1907                                223 49 54.1
 HU1891
 HU1891_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1699832474(NAD 83)
 HU1891
 HU1891|---------------------------------------------------------------------|
 HU1891| PID    Reference Object                     Distance      Geod. Az  |
 HU1891|                                                           dddmmss.s |
 HU1891| DC5927 FROG RM                              13.100 METERS 00311     |
 HU1891| HU1947 NANTICOKE CHURCH SPIRE              APPROX. 5.2 KM 0442636.3 |
 HU1891| HU1890 DEAL ISLAND CHURCH SPIRE            APPROX. 9.0 KM 1800142.8 |
 HU1891| HV6464 CRAB 1907                           APPROX. 9.3 KM 2231440.8 |
 HU1891|---------------------------------------------------------------------|
 HU1891
 HU1891                          SUPERSEDED SURVEY CONTROL
 HU1891
 HU1891  NAD 83(1986)-  38 14 11.17686(N)    075 56 54.33221(W) AD(       ) 3
 HU1891  NAD 27      -  38 14 10.73700(N)    075 56 55.55900(W) AD(       ) 3
 HU1891  USSD        -  38 14 11.12000(N)    075 56 55.31200(W) AD(       ) 3
 HU1891
 HU1891.Superseded values are not recommended for survey control.
 HU1891
 HU1891.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1891.See file dsdata.pdf to determine how the superseded data were derived.
 HU1891
 HU1891_MARKER: N = NAIL
 HU1891_SETTING: 0 = UNSPECIFIED SETTING
 HU1891
 HU1891  HISTORY     - Date     Condition        Report By
 HU1891  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1891  HISTORY     - 1932     MARK NOT FOUND   CGS
 HU1891
 HU1891                          STATION DESCRIPTION
 HU1891
 HU1891'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1891'STATION IS ON THE WESTERN SIDE OF THE ENTRANCE OF NANTICOKE RIVER,
 HU1891'ON FROG POINT, AT THE SOUTHEASTERN END OF CLAY ISLAND, ON A MARSH
 HU1891'POINT ABOUT 20 YARDS W OF SHORE, 25 YARDS E OF SHORE, 25 YARDS FROM
 HU1891'EXTREME END OF POINT, AND IN FRONT OF WATER BUSHES.  CENTER MARK
 HU1891'IS NAIL IN STUB FLUSH WITH GROUND.  REFERENCE MARK IS MARKED BY A
 HU1891'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HU1891'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HU1891'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HU1891'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 13.10 METERS
 HU1891'(43.0 FEET) FROM THE STATION, N 03 DEG 11 MIN E.  OTHER
 HU1891'DISTANCES AND BEARINGS ARE AS FOLLOWS--LEFT TANGENT OF CLAY
 HU1891'ISLAND, 1-1/4 MILES, S 76 DEG 42 MIN W.  RIGHT TANGENT OF SANDY
 HU1891'POINT, 3/4 MILE, N 39 DEG 06 MIN E.  CHIMNEY OF HOUSE, 2-1/2 MILES,
 HU1891'N 40 DEG 37 MIN E.  CHIMNEY NEAR END OF LARGE HOUSE, 2-1/2 MILES,
 HU1891'N 44 DEG 27 MIN E.  STACK OF CANNING HOUSE, 2-1/2 MILES, N 46 DEG 01
 HU1891'MIN E.  END OF NANTICOKE WHARF HOUSE, 2-1/4 MILES, N 47 DEG 25 MIN E.
 HU1891'CHIMNEY ON ELL OF END OF MAIN PART OF LARGE HOUSE, 2-1/4 MILES,
 HU1891'N 62 DEG 52 MIN E.  ROCK CREEK POPLAR TREE, 3-1/2 MILES, S 34 DEG 18
 HU1891'MIN E.
 HU1891
 HU1891                          STATION RECOVERY (1932)
 HU1891
 HU1891'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1891'NO TRACE OF THIS STATION WAS FOUND AFTER A MOST THOROUGH SEARCH BY
 HU1891'FOUR MEN.  THIS SEARCH INCLUDED BURNING THE MARSH AND DIGGING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2568 ***********************************************************************
 HU2568  DESIGNATION -  FRONTIER AZ MK
 HU2568  PID         -  HU2568
 HU2568  STATE/COUNTY-  MD/WORCESTER
 HU2568  COUNTRY     -  US
 HU2568  USGS QUAD   -  BERLIN (2016)
 HU2568
 HU2568                         *CURRENT SURVEY CONTROL
 HU2568  ______________________________________________________________________
 HU2568* NAD 83(1991) POSITION- 38 16 24.17596(N) 075 09 24.54516(W)   NO CHECK
 HU2568* NAVD 88 ORTHO HEIGHT -     1.95  (+/-2cm)        6.4   (feet) VERTCON3
 HU2568  ______________________________________________________________________
 HU2568  GEOID HEIGHT    -        -36.117 (meters)                     GEOID18
 HU2568  LAPLACE CORR    -         -0.26  (seconds)                    DEFLEC18
 HU2568  HORZ ORDER      -  SECOND
 HU2568  VERT ORDER      -  THIRD ? (See Below)
 HU2568
 HU2568.The horizontal coordinates were established by classical geodetic methods
 HU2568.and adjusted by the National Geodetic Survey in January 1992.
 HU2568
 HU2568.No horizontal observational check was made to the station.
 HU2568
 HU2568.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2568.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2568
 HU2568.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2568.GEOID18 height accuracy estimate available here.
 HU2568
 HU2568.The vertical order pertains to the NGVD 29 superseded value.
 HU2568
 HU2568.Click photographs - Photos may exist for this station.
 HU2568
 HU2568.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2568
 HU2568. The following values were computed from the NAD 83(1991) position.
 HU2568
 HU2568;                    North         East     Units Scale Factor Converg.
 HU2568;SPC MD       -    68,976.440   561,278.171   MT  1.00000474   +1 09 24.6
 HU2568;SPC MD       -   226,300.20  1,841,460.13   sFT  1.00000474   +1 09 24.6
 HU2568;UTM  18      - 4,236,159.679   486,283.055   MT  0.99960232   -0 05 49.7
 HU2568
 HU2568!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2568!SPC MD       -   1.00000536  x   1.00000474  =   1.00001010
 HU2568!UTM  18      -   1.00000536  x   0.99960232  =   0.99960768
 HU2568
 HU2568_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8628336159(NAD 83)
 HU2568
 HU2568                          SUPERSEDED SURVEY CONTROL
 HU2568
 HU2568  NAD 83(1986)-  38 16 24.16131(N)    075 09 24.58053(W) AD(       ) 2
 HU2568  NAD 27      -  38 16 23.74032(N)    075 09 25.89937(W) AD(       ) 2
 HU2568  NGVD 29               2.19   (m)            7.2    (f) LEVELING    3  
 HU2568
 HU2568.Superseded values are not recommended for survey control.
 HU2568
 HU2568.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2568.See file dsdata.pdf to determine how the superseded data were derived.
 HU2568
 HU2568_MARKER: DD = SURVEY DISK
 HU2568_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2568_STAMPING: FRONTIER AZ 1985
 HU2568_MARK LOGO: MDSHA
 HU2568_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2568_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2568+STABILITY: SURFACE MOTION
 HU2568_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2568+SATELLITE: SATELLITE OBSERVATIONS - December 30, 2003
 HU2568
 HU2568  HISTORY     - Date     Condition        Report By
 HU2568  HISTORY     - 1985     MONUMENTED       MDSHA
 HU2568  HISTORY     - 20031230 GOOD             USPSQD
 HU2568
 HU2568                          STATION DESCRIPTION
 HU2568
 HU2568'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1985 (MAS)
 HU2568'THE STATION IS LOCATED ABOUT 7.25 KM (4.5 MI) SOUTHWEST FROM
 HU2568'OCEAN CITY, 6.75 KM (4.25 MI) SOUTHEAST FROM BERLIN AND 6.5 KM
 HU2568'(4 MI) EAST FROM IRONSHIRE.
 HU2568'
 HU2568'OWNERSHIP--ROAD-RIGHT-OF-WAY.
 HU2568'
 HU2568'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 50 AND 113 AT BERLIN
 HU2568'GO SOUTH ON U.S. HIGHWAY 113 FOR 2.15 KM (1.35 MI) TO A CROSSROADS
 HU2568'TURN LEFT AND GO SOUTHEAST ON STATE HIGHWAY 376 FOR 6.55 KM (4.1 MI)
 HU2568'TO A INTERSECTION. TURN RIGHT AND GO SOUTH ON STATE HIGHWAY 611 FOR
 HU2568'1.9 KM (1.17 MI) TO THE STATION ON THE RIGHT.
 HU2568'
 HU2568'THE STATION SURFACE MARK IS A MARYLAND STATE HGIHWAY ADMINISTRATION
 HU2568'DISK STAMPED---FRONTIER AZ 1985---SET IN THE TOP OF A 30 CM (12 INCH)
 HU2568'ROUND CONCRETE POST WHICH IS FLUSH WITH THE SURFACE. THE SUB-
 HU2568'SURFACE DISK IS A MARYLAND STATE HIGHWAY ADMINISTRATION DISK
 HU2568'STAMPED---FRONTIER AZ 1985---SET IN THE TOP OF A MASS OF CONCRETE
 HU2568'WHICH IS 1.1 METERS (3.5 FT) BELOW THE SURFACE OF THE GROUND. THEY
 HU2568'ARE 9.0 METERS (29.4 FT) WEST-NORTHWEST FROM THE CENTER OF STATE
 HU2568'HIGHWAY 611, 11.1 METERS (36.5 FT) SOUTH-SOUTHEAST FROM A POWERLINE
 HU2568'POLE NUMBERED 151, 4.8 METERS (15.6 FT) SOUTHEAST FROM A CARSONITE
 HU2568'WITNESS POST AND 7.7 METERS (25.2 FT) SOUTHEAST FROM A TRIANGULAR
 HU2568'BLAZED MAPLE TREE.
 HU2568'
 HU2568'FOR ADDITIONAL INFORMATION SEE THE DESCRIPTION FOR STATION
 HU2568'AARON MDSHA
 HU2568
 HU2568                          STATION RECOVERY (2003)
 HU2568
 HU2568'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU2568'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4210 ***********************************************************************
 JV4210  DESIGNATION -  FROST
 JV4210  PID         -  JV4210
 JV4210  STATE/COUNTY-  MD/FREDERICK
 JV4210  COUNTRY     -  US
 JV4210  USGS QUAD   -  DAMASCUS (2016)
 JV4210
 JV4210                         *CURRENT SURVEY CONTROL
 JV4210  ______________________________________________________________________
 JV4210* NAD 83(1991) POSITION- 39 21 52.67618(N) 077 11 03.73000(W)   ADJUSTED
 JV4210* NAVD 88 ORTHO HEIGHT -   226.    (meters)      741.    (feet) SCALED
 JV4210  ______________________________________________________________________
 JV4210  GEOID HEIGHT    -        -31.972 (meters)                     GEOID18
 JV4210  LAPLACE CORR    -          4.02  (seconds)                    DEFLEC18
 JV4210  HORZ ORDER      -  SECOND
 JV4210
 JV4210.The horizontal coordinates were established by classical geodetic methods
 JV4210.and adjusted by the National Geodetic Survey in January 1992.
 JV4210
 JV4210.The orthometric height was scaled from a topographic map.
 JV4210
 JV4210.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4210.GEOID18 height accuracy estimate available here.
 JV4210
 JV4210.Click photographs - Photos may exist for this station.
 JV4210
 JV4210.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4210
 JV4210. The following values were computed from the NAD 83(1991) position.
 JV4210
 JV4210;                    North         East     Units Scale Factor Converg.
 JV4210;SPC MD       -   188,501.965   384,111.267   MT  0.99998618   -0 06 56.6
 JV4210;SPC MD       -   618,443.53  1,260,205.05   sFT  0.99998618   -0 06 56.6
 JV4210;UTM  18      - 4,359,517.279   311,817.271   MT  1.00003603   -1 23 09.1
 JV4210
 JV4210!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4210!SPC MD       -   0.99996959  x   0.99998618  =   0.99995577
 JV4210!UTM  18      -   0.99996959  x   1.00003603  =   1.00000562
 JV4210
 JV4210:                Primary Azimuth Mark                     Grid Az
 JV4210:SPC MD       -  RIDGEVILLE NURSERIES TANK                090 27 06.3
 JV4210:UTM  18      -  RIDGEVILLE NURSERIES TANK                091 43 18.8
 JV4210
 JV4210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1181759517(NAD 83)
 JV4210
 JV4210|---------------------------------------------------------------------|
 JV4210| PID    Reference Object                     Distance      Geod. Az  |
 JV4210|                                                           dddmmss.s |
 JV4210| JV4218 RIDGEVILLE NURSERIES TANK           APPROX. 1.5 KM 0902009.7 |
 JV4210| CJ9824 FROST RM 1                           39.810 METERS 13939     |
 JV4210| CJ9825 FROST RM 2                           35.180 METERS 23638     |
 JV4210|---------------------------------------------------------------------|
 JV4210
 JV4210                          SUPERSEDED SURVEY CONTROL
 JV4210
 JV4210  NAD 83(1986)-  39 21 52.67614(N)    077 11 03.73954(W) AD(       ) 2
 JV4210  NAD 27      -  39 21 52.30400(N)    077 11 04.80870(W) AD(       ) 2
 JV4210
 JV4210.Superseded values are not recommended for survey control.
 JV4210
 JV4210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4210.See file dsdata.pdf to determine how the superseded data were derived.
 JV4210
 JV4210_MARKER: DS = TRIANGULATION STATION DISK
 JV4210_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4210_STAMPING: FROST 1958
 JV4210_MARK LOGO: CGS
 JV4210_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4210+STABILITY: SURFACE MOTION
 JV4210
 JV4210  HISTORY     - Date     Condition        Report By
 JV4210  HISTORY     - 1958     MONUMENTED       CGS
 JV4210
 JV4210                          STATION DESCRIPTION
 JV4210
 JV4210'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4210'STATION IS LOCATED ABOUT 1-3/4 MILES SOUTHWEST OF MOUNT AIRY AND
 JV4210'1 MILE WEST OF RIDGEVILLE ON A HIGH BANK ON THE SOUTH RIGHT OF WAY
 JV4210'OF U.S. HIGHWAY 40.  STATION IS 50 FEET NORTH OF A TRIANGLE BLAZED
 JV4210'TREE AND ON THE EDGE OF CUT BANK.  THE MARK IS FLUSH WITH THE
 JV4210'SURFACE AND THE DISK IS STAMPED FROST 1958.
 JV4210'
 JV4210'REFERENCE MARK NO. 1 IS 23 FEET SOUTH OF THE EDGE OF CUT BANK.  THE
 JV4210'MARK IS FLUSH WITH THE SURFACE AND THE DISK IS STAMPED FROST NO
 JV4210'1 1958.
 JV4210'
 JV4210'REFERENCE MARK NO. 2 IS 25 FEET SOUTH OF THE EDGE OF CUT BANK, 20
 JV4210'FEET NORTH OF HIGHWAY RIGHT OF WAY MARKER AND 1 FOOT NORTH OF
 JV4210'WITNESS POST.  THE MARK IS FLUSH WITH THE SURFACE AND THE DISK IS
 JV4210'STAMPED FROST NO 2 1958.
 JV4210'
 JV4210'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND STATE
 JV4210'HIGHWAY 27 JUST SOUTH OF MOUNT AIRY AND RIDGEVILLE, GO WESTERLY ON
 JV4210'U.S. HIGHWAY 40 FOR 1.0 MILE TO STATION ON THE LEFT OR SOUTH SIDE
 JV4210'OF HIGHWAY AS DESCRIBED.
 JV4210'
 JV4210'STATION OVER IS VISIBLE FROM THE GROUND.
 JV4210'
 JV4210'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1514 ***********************************************************************
 JW1514  DESIGNATION -  FROSTBURG
 JW1514  PID         -  JW1514
 JW1514  STATE/COUNTY-  MD/ALLEGANY
 JW1514  COUNTRY     -  US
 JW1514  USGS QUAD   -  FROSTBURG (2016)
 JW1514
 JW1514                         *CURRENT SURVEY CONTROL
 JW1514  ______________________________________________________________________
 JW1514* NAD 83(1995) POSITION- 39 39 10.64249(N) 078 55 50.18042(W)   ADJUSTED
 JW1514* NAVD 88 ORTHO HEIGHT -   616.    (meters)     2021.    (feet) SCALED
 JW1514  ______________________________________________________________________
 JW1514  GEOID HEIGHT    -        -32.080 (meters)                     GEOID18
 JW1514  LAPLACE CORR    -         -8.11  (seconds)                    DEFLEC18
 JW1514  HORZ ORDER      -  SECOND
 JW1514
 JW1514.The horizontal coordinates were established by classical geodetic methods
 JW1514.and adjusted by the National Geodetic Survey in April 1998.
 JW1514
 JW1514.The orthometric height was scaled from a topographic map.
 JW1514
 JW1514.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1514.GEOID18 height accuracy estimate available here.
 JW1514
 JW1514.Click photographs - Photos may exist for this station.
 JW1514
 JW1514.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1514
 JW1514. The following values were computed from the NAD 83(1995) position.
 JW1514
 JW1514;                    North         East     Units Scale Factor Converg.
 JW1514;SPC MD       -   222,249.614   234,311.996   MT  1.00004181   -1 12 42.2
 JW1514;SPC MD       -   729,163.94    768,738.61   sFT  1.00004181   -1 12 42.2
 JW1514;SPC PA S     -    36,166.944   498,672.388   MT  1.00005566   -0 45 57.5
 JW1514;SPC PA S     -   118,657.72  1,636,060.99   sFT  1.00005566   -0 45 57.5
 JW1514;SPC WV N     -   128,152.935   648,864.813   MT  0.99994085   +0 21 47.3
 JW1514;SPC WV N     -   420,448.42  2,128,817.31   sFT  0.99994085   +0 21 47.3
 JW1514;UTM  17      - 4,391,286.389   677,541.112   MT  0.99998808   +1 19 15.2
 JW1514
 JW1514!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1514!SPC MD       -   0.99990842  x   1.00004181  =   0.99995023
 JW1514!SPC PA S     -   0.99990842  x   1.00005566  =   0.99996408
 JW1514!SPC WV N     -   0.99990842  x   0.99994085  =   0.99984928
 JW1514!UTM  17      -   0.99990842  x   0.99998808  =   0.99989650
 JW1514
 JW1514:                Primary Azimuth Mark                     Grid Az
 JW1514:SPC MD       -  FROSTBURG AZ MK 2                        087 15 08.3
 JW1514:SPC PA S     -  FROSTBURG AZ MK 2                        086 48 23.6
 JW1514:SPC WV N     -  FROSTBURG AZ MK 2                        085 40 38.8
 JW1514:UTM  17      -  FROSTBURG AZ MK 2                        084 43 10.9
 JW1514
 JW1514_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD7754191286(NAD 83)
 JW1514
 JW1514|---------------------------------------------------------------------|
 JW1514| PID    Reference Object                     Distance      Geod. Az  |
 JW1514|                                                           dddmmss.s |
 JW1514| CJ9828 FROSTBURG RM 1                        6.715 METERS 01136     |
 JW1514| CJ9827 FROSTBURG AZ MK 2                                  0860226.1 |
 JW1514| CJ9826 FROSTBURG AZ MK                                    2321004.5 |
 JW1514| CJ9829 FROSTBURG RM 2                        7.666 METERS 25151     |
 JW1514|---------------------------------------------------------------------|
 JW1514
 JW1514                          SUPERSEDED SURVEY CONTROL
 JW1514
 JW1514  NAD 83(1991)-  39 39 10.64158(N)    078 55 50.18168(W) AD(       ) 2
 JW1514  NAD 83(1986)-  39 39 10.64664(N)    078 55 50.18853(W) AD(       ) 2
 JW1514  NAD 27      -  39 39 10.33700(N)    078 55 51.10900(W) AD(       ) 2
 JW1514
 JW1514.Superseded values are not recommended for survey control.
 JW1514
 JW1514.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1514.See file dsdata.pdf to determine how the superseded data were derived.
 JW1514
 JW1514_MARKER: DS = TRIANGULATION STATION DISK
 JW1514_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1514_STAMPING: FROSTBURG 1955
 JW1514_MARK LOGO: CGS
 JW1514_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1514+STABILITY: SURFACE MOTION
 JW1514
 JW1514  HISTORY     - Date     Condition        Report By
 JW1514  HISTORY     - 1955     MONUMENTED       CGS
 JW1514  HISTORY     - 1963     GOOD             MDDT
 JW1514  HISTORY     - 1973     GOOD             NGS
 JW1514
 JW1514                          STATION DESCRIPTION
 JW1514
 JW1514'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1514'THE STATION IS LOCATED ON THE CAMPUS OF THE FROSTBURG STATE
 JW1514'TEACHERS COLLEGE IN FROSTBURG, 60 FEET NORTH OF THE NORTHWEST
 JW1514'CORNER OF THE ADMINISTRATION BUILDING, 24 FEET SOUTHEAST OF THE
 JW1514'CENTER OF MAPLE STREET, 18 FEET SOUTH OF A FIREPLUG, AND 7 FEET
 JW1514'SOUTHEAST OF THE SOUTH EDGE OF A CONCRETE SIDEWALK.
 JW1514'
 JW1514'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTH ON MAPLE
 JW1514'STREET FOR 1/2 BLOCK, CONTINUE SOUTHERLY ON A NARROW STREET FOR
 JW1514'0.15 MILE TO THE CAMPUS ATHLETIC FIELD, CROSS FIELD AND THE
 JW1514'AZIMUTH MARK IS ON THE SOUTH EDGE OF THE TRACK.
 JW1514'
 JW1514'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1514'STAMPED FROSTBURG 1955.
 JW1514'
 JW1514'REFERENCE MARK 1 IS 5.5 FEET NORTHWEST OF THE FIREPLUG, 1 FOOT
 JW1514'NORTH OF A POWERLINE POLE, AND 6 INCHES SOUTHWEST OF THE NORTH
 JW1514'EDGE OF THE CONCRETE SIDEWALK.  THE MARK IS A STANDARD DISK SET
 JW1514'IN CEMENT IN A DRILL HOLE IN THE SIDEWALK.  THE DISK IS STAMPED
 JW1514'FROSTBURG NO 1 1955.
 JW1514'
 JW1514'REFERENCE MARK 2 IS 6 INCHES NORTHWEST OF THE SOUTHEAST EDGE
 JW1514'OF THE SIDEWALK.  THE MARK IS A STANDARD DISK SET IN CEMENT IN
 JW1514'A DRILL HOLE IN THE SIDEWALK.  THE DISK IS STAMPED FROSTBURG NO
 JW1514'2 1955.
 JW1514'
 JW1514'THE AZIMUTH MARK IS 21 FEET SOUTH OF THE SOUTH EDGE OF THE
 JW1514'CINDER TRACK, AND 3.5 FEET NORTHEAST OF A WHITE 4 IN X 4 IN
 JW1514'WITNESS POST.  THE MARK PROJECTS 6 INCHES, AND THE DISK IS
 JW1514'STAMPED FROSTBURG 1955.
 JW1514'
 JW1514'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JW1514
 JW1514                          STATION RECOVERY (1963)
 JW1514
 JW1514'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 JW1514'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD
 JW1514'CONDITION.  A NEW AZIMUTH MARK WAS SET.
 JW1514'
 JW1514'THE REFERENCE MARKS ARE LOCATED IN A RELATIVELY NEW CONCRETE
 JW1514'SIDEWALK.  THE MARKS APPEAR TO HAVE BEEN REMOVED AND RESET VERY
 JW1514'NEAR THEIR ORIGINAL LOCATION.
 JW1514'
 JW1514'THE AZIMUTH MARK IS LOCATED APPROXIMATELY 0.5 MILE EAST OF THE
 JW1514'STATION, ONE BLOCK SOUTH ALONG STATE ROUTE 36 (GRANT STREET)
 JW1514'FROM THE JUNCTION OF U.S. ROUTE 40 (MAIN STREET).  IT IS SET
 JW1514'FLUSH IN THE CONCRETE CURB, 33.0 FEET WEST OF THE CENTER LINE
 JW1514'OF GRANT STREET AND 10.6 FEET NORTH OF THE CENTER LINE OF
 JW1514'WASHINGTON STREET, AND STAMPED FROSTBURG 1963.
 JW1514
 JW1514                          STATION RECOVERY (1973)
 JW1514
 JW1514'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JW1514'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JW1514'CONDITION AS DESCRIBED IN THE 1955 DESCRIPTION.  THIS STATION
 JW1514'WAS RECOVERED IN AN ATTEMPT TO ESTABLISH AN AZIMUTH TO
 JW1514'TRIANGULATION STATION DAN 1927.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1521 ***********************************************************************
 JW1521  DESIGNATION -  FROSTBURG ATT MICROWAVE
 JW1521  PID         -  JW1521
 JW1521  STATE/COUNTY-  MD/GARRETT
 JW1521  COUNTRY     -  US
 JW1521  USGS QUAD   -  FROSTBURG (2016)
 JW1521
 JW1521                         *CURRENT SURVEY CONTROL
 JW1521  ______________________________________________________________________
 JW1521* NAD 83(1995) POSITION- 39 40 43.64348(N) 078 57 33.06890(W)   ADJUSTED
 JW1521  ______________________________________________________________________
 JW1521  GEOID HEIGHT    -        -31.917 (meters)                     GEOID18
 JW1521  LAPLACE CORR    -         -6.00  (seconds)                    DEFLEC18
 JW1521  HORZ ORDER      -  THIRD
 JW1521
 JW1521.The horizontal coordinates were established by classical geodetic methods
 JW1521.and adjusted by the National Geodetic Survey in April 1998.
 JW1521
 JW1521.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1521.GEOID18 height accuracy estimate available here.
 JW1521
 JW1521.Click photographs - Photos may exist for this station.
 JW1521
 JW1521.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1521
 JW1521. The following values were computed from the NAD 83(1995) position.
 JW1521
 JW1521;                    North         East     Units Scale Factor Converg.
 JW1521;SPC MD       -   225,169.598   231,921.127   MT  1.00004804   -1 13 46.7
 JW1521;SPC MD       -   738,743.92    760,894.56   sFT  1.00004804   -1 13 46.7
 JW1521;UTM  17      - 4,394,097.689   675,023.697   MT  0.99997715   +1 18 12.1
 JW1521
 JW1521_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD7502394097(NAD 83)
 JW1521
 JW1521                          SUPERSEDED SURVEY CONTROL
 JW1521
 JW1521  NAD 83(1991)-  39 40 43.64501(N)    078 57 33.07091(W) AD(       ) 3
 JW1521  NAD 83(1986)-  39 40 43.64742(N)    078 57 33.07507(W) AD(       ) 3
 JW1521  NAD 27      -  39 40 43.34403(N)    078 57 33.99229(W) AD(       ) 3
 JW1521
 JW1521.Superseded values are not recommended for survey control.
 JW1521
 JW1521.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1521.See file dsdata.pdf to determine how the superseded data were derived.
 JW1521
 JW1521_MARKER: 45 = MICROWAVE TOWER
 JW1521_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1521+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2009
 JW1521
 JW1521  HISTORY     - Date     Condition        Report By
 JW1521  HISTORY     - 1975     FIRST OBSERVED   NGS
 JW1521  HISTORY     - 20090321 GOOD             GEOCAC
 JW1521
 JW1521                          STATION DESCRIPTION
 JW1521
 JW1521'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (WOM)
 JW1521'THE STATION, FROSTBURG AMERICAN TELEPHONE AND TELEGRAPH COMPANY
 JW1521'MICROWAVE, IS THE LIGHT ATOP A FOUR LEGGED SELF SUPPORTED STEEL
 JW1521'STRUCTURE, PAINTED RED AND WHITE, WITH REFLECTORS AT THE TOP
 JW1521'AND HAS AN OVERALL HEIGHT OF 300 FEET.
 JW1521'
 JW1521'THE STATION IS LOCATED ABOUT 9.5 MILES EAST OF GRANTSVILLE,
 JW1521'8.5 MILES SOUTHWEST OF SALISBURY, 3 MILES SOUTH OF THE MARYLAND
 JW1521'AND PENNSYLVANIA STATE LINE AND 0.5 MILE NORTH OF THE SUMMIT
 JW1521'ALONG U.S. HIGHWAY 40.
 JW1521
 JW1521                          STATION RECOVERY (2009)
 JW1521
 JW1521'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 JW1521'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0465 ***********************************************************************
 HU0465  DESIGNATION -  FRUITLAND
 HU0465  PID         -  HU0465
 HU0465  STATE/COUNTY-  MD/WICOMICO
 HU0465  COUNTRY     -  US
 HU0465  USGS QUAD   -  SALISBURY (2016)
 HU0465
 HU0465                         *CURRENT SURVEY CONTROL
 HU0465  ______________________________________________________________________
 HU0465* NAD 83(1991) POSITION- 38 18 57.62370(N) 075 37 25.73113(W)   ADJUSTED
 HU0465* NAVD 88 ORTHO HEIGHT -    11.248 (meters)       36.90  (feet) ADJUSTED
 HU0465  ______________________________________________________________________
 HU0465  GEOID HEIGHT    -        -35.883 (meters)                     GEOID18
 HU0465  LAPLACE CORR    -         -1.32  (seconds)                    DEFLEC18
 HU0465  DYNAMIC HEIGHT  -         11.241 (meters)       36.88  (feet) COMP
 HU0465  MODELED GRAVITY -    980,000.2   (mgal)                       NAVD 88
 HU0465
 HU0465  HORZ ORDER      -  SECOND
 HU0465  VERT ORDER      -  FIRST     CLASS I
 HU0465
 HU0465.The horizontal coordinates were established by classical geodetic methods
 HU0465.and adjusted by the National Geodetic Survey in January 1992.
 HU0465
 HU0465.The orthometric height was determined by differential leveling and
 HU0465.adjusted by the NATIONAL GEODETIC SURVEY
 HU0465.in June 1991.
 HU0465
 HU0465.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0465.GEOID18 height accuracy estimate available here.
 HU0465
 HU0465.Click photographs - Photos may exist for this station.
 HU0465
 HU0465.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0465
 HU0465.The dynamic height is computed by dividing the NAVD 88
 HU0465.geopotential number by the normal gravity value computed on the
 HU0465.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0465.degrees latitude (g = 980.6199 gals.).
 HU0465
 HU0465.The modeled gravity was interpolated from observed gravity values.
 HU0465
 HU0465. The following values were computed from the NAD 83(1991) position.
 HU0465
 HU0465;                    North         East     Units Scale Factor Converg.
 HU0465;SPC MD       -    72,986.771   520,348.372   MT  0.99999725   +0 51 49.5
 HU0465;SPC MD       -   239,457.43  1,707,176.28   sFT  0.99999725   +0 51 49.5
 HU0465;UTM  18      - 4,241,061.616   445,466.383   MT  0.99963662   -0 23 12.4
 HU0465
 HU0465!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0465!SPC MD       -   1.00000387  x   0.99999725  =   1.00000112
 HU0465!UTM  18      -   1.00000387  x   0.99963662  =   0.99964048
 HU0465
 HU0465:                Primary Azimuth Mark                     Grid Az
 HU0465:SPC MD       -  FRUITLAND AZ MK                          216 26 36.0
 HU0465:UTM  18      -  FRUITLAND AZ MK                          217 41 37.9
 HU0465
 HU0465_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4546641061(NAD 83)
 HU0465
 HU0465|---------------------------------------------------------------------|
 HU0465| PID    Reference Object                     Distance      Geod. Az  |
 HU0465|                                                           dddmmss.s |
 HU0465| HU1767 FRUITLAND DULANY CAN CO TANK        APPROX. 1.0 KM 0354950.7 |
 HU0465| HU0464 FRUITLAND RM 1                       24.583 METERS 07010     |
 HU0465| HU0466 FRUITLAND RM 2                       24.929 METERS 16657     |
 HU0465| HU0467 FRUITLAND AZ MK                     423.793 METERS 2171825.5 |
 HU0465|---------------------------------------------------------------------|
 HU0465
 HU0465                          SUPERSEDED SURVEY CONTROL
 HU0465
 HU0465  NAD 83(1986)-  38 18 57.61666(N)    075 37 25.75785(W) AD(       ) 2
 HU0465  NAD 27      -  38 18 57.20400(N)    075 37 27.01800(W) AD(       ) 2
 HU0465  NGVD 29              11.50   (m)           37.7    (f) LEVELING    3  
 HU0465  NGVD 29 (06/12/91)   11.504  (m)           37.74   (f) ADJUSTED    1 1
 HU0465  NGVD 29 (??/??/87)   11.504  (m)           37.74   (f) SUPERSEDED  1 1
 HU0465  NGVD 29              11.49   (m)           37.7    (f) LEVELING    3  
 HU0465
 HU0465.Superseded values are not recommended for survey control.
 HU0465
 HU0465.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0465.See file dsdata.pdf to determine how the superseded data were derived.
 HU0465
 HU0465_MARKER: DS = TRIANGULATION STATION DISK
 HU0465_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0465_STAMPING: FRUITLAND 1955
 HU0465_MARK LOGO: CGS
 HU0465_PROJECTION: RECESSED 9 CENTIMETERS
 HU0465_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0465+STABILITY: SURFACE MOTION
 HU0465_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0465+SATELLITE: SATELLITE OBSERVATIONS - November 27, 2019
 HU0465
 HU0465  HISTORY     - Date     Condition        Report By
 HU0465  HISTORY     - 1956     MONUMENTED       CGS
 HU0465  HISTORY     - 1972     GOOD             NGS
 HU0465  HISTORY     - 1972     GOOD             NGS
 HU0465  HISTORY     - 1987     GOOD             NGS
 HU0465  HISTORY     - 19891219 GOOD             NGS
 HU0465  HISTORY     - 20000309 GOOD             NGS
 HU0465  HISTORY     - 20050907 GOOD             GEOCAC
 HU0465  HISTORY     - 20191127 GOOD             ARCSHE
 HU0465
 HU0465                          STATION DESCRIPTION
 HU0465
 HU0465'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (WFD)
 HU0465'THE STATION IS LOCATED ABOUT 3.5 MILES SOUTH-SOUTHWEST OF THE TOWN OF
 HU0465'SALISBURY, 0.25 MILE SOUTH OF FRUITLAND, 86 FEET WEST OF THE WEST RAIL
 HU0465'OF A RAILROAD TRACK, 60 FEET EAST OF THE CENTER OF THE EAST LANE OF
 HU0465'U.S. HIGHWAY 13, AND ON THE RIGHT-OF-WAY OF THE HIGHWAY.
 HU0465'
 HU0465'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 50 AND 13 IN
 HU0465'SALISBURY, GO SOUTH ON U.S. HIGHWAY 13 FOR 3.2 MILES TO THE JUNCTION
 HU0465'OF STATE HIGHWAY 351 IN FRUITLAND, CONTINUE SOUTHERLY ON U.S. HIGHWAY
 HU0465'13 FOR 0.5 MILE TO THE STATION ON THE LEFT AS DESCRIBED BELOW.
 HU0465'
 HU0465'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTH ON THE HIGHWAY
 HU0465'FOR 0.25 MILE TO THE AZIMUTH MARK ON THE LEFT AS DESCRIBED.
 HU0465'
 HU0465'THE STATION MARK IS FLUSH WITH THE SURFACE OF THE GROUND, AND THE DISK
 HU0465'IS STAMPED FRUITLAND 1955.
 HU0465'
 HU0465'REFERENCE MARK 1 IS 27 FEET WEST OF THE WEST RAIL OF THE RAILROAD
 HU0465'TRACK.  THE MARK IS FLUSH WITH THE SURFACE OF THE GROUND, AND THE DISK
 HU0465'IS STAMPED FRUITLAND NO 1 1955.
 HU0465'
 HU0465'REFERENCE MARK 2 IS 126 FEET NORTH OF THE CENTER OF A MACADAM ROAD,
 HU0465'AND 27 FEET WEST OF THE WEST RAIL OF THE RAILROAD TRACK.  THE MARK IS
 HU0465'FLUSH WITH THE SURFACE OF THE GROUND, AND THE DISK IS STAMPED
 HU0465'FRUITLAND NO 2 1955.
 HU0465'
 HU0465'THE AZIMUTH MARK IS 45 FEET WEST OF THE CENTER OF THE WEST LANE OF THE
 HU0465'HIGHWAY, 7 FEET NORTH OF POWERLINE POLE, AND 2 FEET EAST OF A WHITE 4
 HU0465'IN X 4 IN WITNESS POST.  THE MARK IS FLUSH WITH THE SURFACE OF THE
 HU0465'GROUND, AND THE DISK IS STAMPED FRUITLAND 1955.
 HU0465'
 HU0465'NOTE--THIS STATION WAS BUILT IN 1955 AND WAS OCCUPIED IN 1956.
 HU0465'
 HU0465'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 HU0465
 HU0465                          STATION RECOVERY (1972)
 HU0465
 HU0465'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (RRG)
 HU0465'THE STATION MARK, RM MARKS NO..1 AND 2 AND THE AZIMUTH MARK WERE ALL
 HU0465'RECOVERED AND IN GOOD CONDITION.
 HU0465'
 HU0465'THE STATION MAY BE REACHED BY GOING 0.45 MILE SOUTHWEST ALONG U.S.
 HU0465'HIGHWAY 13 FROM THE CROSSING OF MAIN STREET AT FRUITLAND..  NEAR THE
 HU0465'CROSSING OF DIVISION STREET, ABOUT 0.1 MILE SOUTHWEST OF THE PENN
 HU0465'CENTRAL RAILROAD MILEPOST NO. 10, 196 FEET NORTH OF THE CENTER OF THE
 HU0465'CROSSING OF SOUTH DIVISION STREET, 99.5 FEET NORTHWEST OF THE
 HU0465'NORTHWEST RAIL OF THE PENN CENTRAL RAILROAD, 59 FEET SOUTHEAST OF THE
 HU0465'CENTER LINE OF THE NORTHBOUND LANE OF THE HIGHWAY, 49 FEET NORTHEAST
 HU0465'OF A 12 INCH CYPRESS TREE, 1.5 FEET NORTHEAST OF A METAL WITNESS POST,
 HU0465'3 FEET BELOW THE LEVEL OF THE TRACK OF THE PENN CENTRAL RAILROAD, SET
 HU0465'IN THE TOP OF A CONCRETE POST FLUSH WITH THE LEVEL OF THE GROUND.
 HU0465'
 HU0465'RM 1 IS 80.7 FEET NORTHEAST OF THE STATION MARK DESCRIBED, 235 FEET
 HU0465'NORTHEAST OF THE CROSSING OF SOUTH DIVISION STREET, 109 FEET SOUTHEAST
 HU0465'OF THE CENTER LINE OF THE NORTHBOUND LANE OF THE HIGHWAY, 48.4 FEET
 HU0465'NORTHWEST OF THE NORTHWEST RAIL OF THE PENN CENTRAL RAILROAD, 121.0
 HU0465'FEET NORTHEAST OF RM 2 DESCRIBED, 1.5 FEET SOUTHWEST OF A METAL
 HU0465'WITNESS POST, 2-1/2 FEET BELOW THE LEVEL OF THE TRACK, SET IN THE TOP
 HU0465'OF A CONCRETE POST FLUSH WITH THE LEVEL OF THE GROUND.
 HU0465'
 HU0465'RM 2 IS 81.8 FEET SOUTH OF THE STATION MARK DESCRIBED, 114 FEET
 HU0465'NORTHEAST OF THE CENTER OF THE CROSSING OF NORTH DIVISION STREET, 115
 HU0465'FEET SOUTHEAST OF THE CENTER LINE OF THE NORTHBOUND LANE OF THE
 HU0465'HIGHWAY, 41 FEET NORTHWEST OF THE NORTHWEST RAIL OF THE PENN CENTRAL
 HU0465'RAILROAD, 121 FEET SOUTHWEST OF RM 1 DESCRIBED, 1-1/2 FEET SOUTHWEST
 HU0465'OF A METAL WITNESS POST, 2-1/2 FEET BELOW THE LEVEL OF THE TRACK AND
 HU0465'SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE LEVEL OF THE GROUND.
 HU0465'
 HU0465'THE AZIMUTH MARK IS ABOUT 0.25 MILE SOUTHWEST ALONG U.S. HIGHWAY 13
 HU0465'FROM THE STATION MARK, 40 FEET NORTHWEST OF THE CENTER LINE OF THE
 HU0465'SOUTH-BOUND LANE OF THE HIGHWAY, 8 FEET NORTHEAST OF POWER LINE POLE 4
 HU0465'ET 20, 1.5 FEET SOUTHWEST OF A METAL WITNESS POST, 4-1/2 FEET BELOW
 HU0465'THE LEVEL OF THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST FLUSH
 HU0465'WITH THE GROUND.
 HU0465'
 HU0465'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 0.45 MILE SOUTHWEST
 HU0465'OF FRUITLAND.
 HU0465
 HU0465                          STATION RECOVERY (1972)
 HU0465
 HU0465'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0465'0.4 MI SW FROM FRUITLAND.  ABOUT 0.45 MILE SOUTHWEST ALONG THE PENN
 HU0465'CENTRAL RAILROAD FROM THE CROSSING OF MAIN STREET AT FRUITLAND, 0.1
 HU0465'MILE SOUTHWEST OF MILEPOST 10, ABOUT 196 FEET NORTH OF THE CENTER OF
 HU0465'THE CROSSING OF SOUTH DIVISION STREET, 99.5 FEET NORTHWEST OF THE
 HU0465'NORTHWEST RAIL OF THE TRACK, 59 FEET SOUTHEAST OF THE CENTER LINE OF
 HU0465'THE NORTHBOUND LAND OF U.S. HIGHWAY 13, 49 FEET NORTHEAST OF A 12-INCH
 HU0465'CYPRESS TREE, 1.5 FEET NORTHEAST OF A METAL WITNESS POST, 3 FEET BELOW
 HU0465'THE LEVEL OF THE TRACK AND SET IN THE TOP OF A CONCRETE POST FLUSH
 HU0465'WITH THE LEVEL OF THE GROUND.
 HU0465
 HU0465                          STATION RECOVERY (1987)
 HU0465
 HU0465'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU0465'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES NOTED BELOW -- THE
 HU0465'STATION, REFERENCE MARK 1, REFERENCE MARK 2, AND THE AZIMUTH MARK WERE
 HU0465'RECOVERED AND FOUND IN GOOD CONDITION.  A DIFFERENCE OF 1 MINUTE 10
 HU0465'SECONDS IN DIRECTION WAS OBSERVED TO REFERENCE MARK 1.  A DIFFERENCE
 HU0465'IN DISTANCE OF 0.009 METERS OR 0.03 FT WAS OBSERVED TO REFERENCE MARK
 HU0465'2.  ALL OTHER DISTANCES AND DIRECTIONS WERE IN CLOSE AGREEMENT WITH
 HU0465'THE MOST RECENT INFORMATION AVAILABLE.  A COMPLETE NEW DESCRIPTION
 HU0465'FOLLOWS.
 HU0465'
 HU0465'THE STATION IS LOCATED ABOUT 14.7 KM (9.1 MI) NORTH-NORTHEAST OF
 HU0465'PRINCESS ANNE, 6.0 KM (3.7 MI) SOUTH-SOUTHWEST OF SALISBURY, AND IN
 HU0465'THE SOUTH PART OF FRUITLAND.  OWNERSHIP--ROAD RIGHT OF WAY.
 HU0465'
 HU0465'TO REACH THE STATION FROM THE POST OFFICE IN FRUITLAND, GO NORTHWEST
 HU0465'FOR 0.2 KM (0.12 MI) ON EAST MAIN STREET TO A CROSSROADS.  TURN LEFT
 HU0465'AND GO SOUTH FOR 0.8 KM (0.48 MI) ON U.S. HIGHWAY 13 TO THE MARK ON
 HU0465'THE LEFT.
 HU0465'
 HU0465'THE STATION IS A STANDARD CGS DISK STAMPED ---FRUITLAND 1955---, SET
 HU0465'INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER FLUSH WITH
 HU0465'GROUND.  LOCATED 18.1 METERS (59.4 FT) EAST-SOUTHEAST FROM THE
 HU0465'CENTERLINE OF THE NORTHBOUND LANE OF U.S. HIGHWAY 13, 29.8 METERS
 HU0465'(97.8 FT) WEST-NORTHWEST FROM THE WEST RAIL OF A RAILROAD 14.8 METERS
 HU0465'(48.5 FT) NORTHEAST FROM A 30 INCH CYPRESS TREE, 55.8 METERS
 HU0465'(183.0 FT) NORTHWEST FROM THE CENTERLINE OF SOUTH DIVISION STREET, AND
 HU0465'0.5 METERS (1.5 FT) NORTH-NORTHWEST FROM A WITNESS POST.
 HU0465'
 HU0465'REFERENCE MARK NO. 1 IS A STANDARD CGS DISK STAMPED
 HU0465'---FRUITLAND NO 1 1955---, SET INTO THE TOP OF A ROUND CONCRETE
 HU0465'MONUMENT 30 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 34.0 METERS
 HU0465'(111.2 FT) EAST-SOUTHEAST FROM THE CENTERLINE OF THE NORTHBOUND LANE
 HU0465'OF U.S. HIGHWAY 13, 14.3 METERS (47.0 FT) WEST-NORTHWEST FROM THE WEST
 HU0465'RAIL OF A RAILROAD TRACK, 55.8 METERS (183.0 FT) NORTHWEST FROM THE
 HU0465'CENTERLINE OF SOUTH DIVISION STREET, AND 0.3 METERS (1.0 FT)
 HU0465'SOUTH-SOUTHWEST FROM A WITNESS POST.  MARK IS 0.172 METERS BELOW THE
 HU0465'STATION.
 HU0465'
 HU0465'REFERENCE MARK NO. 2 IS A STANDARD CGS DISK STAMPED
 HU0465'---FRUITLAND NO 2 1955---, SET INTO THE TOP OF A ROUND CONCRETE
 HU0465'MONUMENT 30 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 35.0 METERS
 HU0465'(115.0 FT) EAST-SOUTHEAST FROM THE CENTERLINE OF THE NORTHBOUND LANE
 HU0465'OF U.S. HIGHWAY 13, 12.5 METERS (40.9 FT) WEST-NORTHWEST FROM THE WEST
 HU0465'RAIL OF A RAILROAD TRACK, 30.8 METERS (101.2 FT) NORTHWEST FROM THE
 HU0465'CENTERLINE OF SOUTH DIVISION STREET, AND 0.4 METERS (1.4 FT)
 HU0465'NORTH-NORTHWEST FROM A WITNESS POST.  MARK IS 0.048 METERS BELOW THE
 HU0465'STATION.
 HU0465'
 HU0465'AZIMUTH MARK NO. 1 IS A STANDARD CGS DISK STAMPED
 HU0465'---FRUITLAND 1955---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 30
 HU0465'CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 1.6 METERS (5.5 FT)
 HU0465'SOUTHEAST FROM A WITNESS POST, 14.0 METERS (46.0 FT) WEST-NORTHWEST
 HU0465'FROM THE CENTERLINE OF THE SOUTHBOUND LANE OF U.S. HIGHWAY 13, 52.1
 HU0465'METERS (171 FT) SOUTH-SOUTHWEST FROM A POWERLINE POLE NUMBERED
 HU0465'46064-91256, AND 26.4 METERS (86.5 FT) WEST FROM A 12-INCH CYPRESS
 HU0465'TREE.  TO REACH THE AZIMUTH FROM THE STATION, GO SOUTH FOR 0.4 KM
 HU0465'(0.27 MI) ON U.S.  HIGHWAY 13 TO THE MARK ON THE RIGHT.
 HU0465
 HU0465                          STATION RECOVERY (1989)
 HU0465
 HU0465'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU0465'IN FRUITLAND, AT THE INTERSECTION OF U.S. HIGHWAY 13 AND DIVISION
 HU0465'STREET, 80.2 M (263.12 FT) NORTHEAST OF THE CENTERLINE OF THE STREET,
 HU0465'18.3 M (60.04 FT) SOUTHEAST OF THE CENTERLINE OF THE NORTHBOUND LANES
 HU0465'OF THE HIGHWAY, 0.4 M (1.31 FT) NORTHEAST OF A WITNESS POST, 1.2 M
 HU0465'(3.94 FT) BELOW THE LEVEL OF THE HIGHWAY, AND IN A CONCRETE MONUMENT
 HU0465'THAT IS FLUSH WITH THE GROUND SURFACE.
 HU0465
 HU0465                          STATION RECOVERY (2000)
 HU0465
 HU0465'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (ED)
 HU0465'RECOVERED AS DESCRIBED.
 HU0465'STATION NOT SUITABLE FOR GPS OBSERVATIONS.
 HU0465
 HU0465                          STATION RECOVERY (2005)
 HU0465
 HU0465'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0465'RECOVERED IN GOOD CONDITION.
 HU0465
 HU0465                          STATION RECOVERY (2019)
 HU0465
 HU0465'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HU0465'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0467 ***********************************************************************
 HU0467  DESIGNATION -  FRUITLAND AZ MK
 HU0467  PID         -  HU0467
 HU0467  STATE/COUNTY-  MD/WICOMICO
 HU0467  COUNTRY     -  US
 HU0467  USGS QUAD   -  EDEN (2016)
 HU0467
 HU0467                         *CURRENT SURVEY CONTROL
 HU0467  ______________________________________________________________________
 HU0467* NAD 83(1991) POSITION- 38 18 46.69135(N) 075 37 36.30397(W)   ADJUSTED
 HU0467* NAVD 88 ORTHO HEIGHT -    11.465 (meters)       37.61  (feet) ADJUSTED
 HU0467  ______________________________________________________________________
 HU0467  GEOID HEIGHT    -        -35.887 (meters)                     GEOID18
 HU0467  LAPLACE CORR    -         -1.32  (seconds)                    DEFLEC18
 HU0467  DYNAMIC HEIGHT  -         11.458 (meters)       37.59  (feet) COMP
 HU0467  MODELED GRAVITY -    979,999.9   (mgal)                       NAVD 88
 HU0467
 HU0467  HORZ ORDER      -  THIRD
 HU0467  VERT ORDER      -  FIRST     CLASS I
 HU0467
 HU0467.The horizontal coordinates were established by classical geodetic methods
 HU0467.and adjusted by the National Geodetic Survey in January 1992.
 HU0467
 HU0467.The orthometric height was determined by differential leveling and
 HU0467.adjusted by the NATIONAL GEODETIC SURVEY
 HU0467.in June 1991.
 HU0467
 HU0467.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0467.GEOID18 height accuracy estimate available here.
 HU0467
 HU0467.Click photographs - Photos may exist for this station.
 HU0467
 HU0467.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0467
 HU0467.The dynamic height is computed by dividing the NAVD 88
 HU0467.geopotential number by the normal gravity value computed on the
 HU0467.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0467.degrees latitude (g = 980.6199 gals.).
 HU0467
 HU0467.The modeled gravity was interpolated from observed gravity values.
 HU0467
 HU0467. The following values were computed from the NAD 83(1991) position.
 HU0467
 HU0467;                    North         East     Units Scale Factor Converg.
 HU0467;SPC MD       -    72,645.854   520,096.628   MT  0.99999777   +0 51 42.8
 HU0467;SPC MD       -   238,338.94  1,706,350.35   sFT  0.99999777   +0 51 42.8
 HU0467;UTM  18      - 4,240,726.395   445,207.353   MT  0.99963697   -0 23 18.8
 HU0467
 HU0467!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0467!SPC MD       -   1.00000383  x   0.99999777  =   1.00000160
 HU0467!UTM  18      -   1.00000383  x   0.99963697  =   0.99964080
 HU0467
 HU0467_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4520740726(NAD 83)
 HU0467
 HU0467                          SUPERSEDED SURVEY CONTROL
 HU0467
 HU0467  NAD 83(1986)-  38 18 46.68570(N)    075 37 36.33297(W) AD(       ) 3
 HU0467  NGVD 29              11.72   (m)           38.5    (f) LEVELING    3  
 HU0467  NGVD 29 (11/26/84)   11.721  (m)           38.45   (f) ADJUSTED    1 1
 HU0467
 HU0467.Superseded values are not recommended for survey control.
 HU0467
 HU0467.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0467.See file dsdata.pdf to determine how the superseded data were derived.
 HU0467
 HU0467_MARKER: DZ = AZIMUTH MARK DISK
 HU0467_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0467_STAMPING: FRUITLAND 1955
 HU0467_MARK LOGO: CGS
 HU0467_PROJECTION: RECESSED 3 CENTIMETERS
 HU0467_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0467+STABILITY: SURFACE MOTION
 HU0467_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0467+SATELLITE: SATELLITE OBSERVATIONS - November 27, 2019
 HU0467
 HU0467  HISTORY     - Date     Condition        Report By
 HU0467  HISTORY     - 1956     MONUMENTED       CGS
 HU0467  HISTORY     - 1972     GOOD             NGS
 HU0467  HISTORY     - 1987     GOOD             NGS
 HU0467  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0467  HISTORY     - 20191127 GOOD             ARCSHE
 HU0467
 HU0467                          STATION DESCRIPTION
 HU0467
 HU0467'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0467'0.7 MI SW FROM FRUITLAND.
 HU0467'ABOUT 0.7 MILE SOUTHWEST ALONG THE PENN CENTRAL RAILROAD FROM
 HU0467'THE CROSSING OF MAIN STREET AT FRUITLAND, ALONG U.S. HIGHWAY 13,
 HU0467'ABOUT 80 YARDS NORTHWEST OF AND ACROSS U.S. HIGHWAY 13 FROM THE
 HU0467'NORTHWEST RAIL OF THE TRACK, 40 FEET NORTHWEST OF THE CENTER LINE
 HU0467'OF THE SOUTHBOUND LANE OF THE HIGHWAY, 8 FEET NORTHEAST OF POWER
 HU0467'LINE POLE 4ET 20, ABOUT 0.2 MILE SOUTHWEST OF THE INTERSECTION
 HU0467'OF THE HIGHWAY AND SOUTH DIVISION STREET, 1.5 FEET SOUTHWEST
 HU0467'OF A METAL WITNESS POST, 4 1/2 FEET BELOW THE LEVEL OF THE HWY.
 HU0467'AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE LEVEL OF
 HU0467'THE GROUND.
 HU0467
 HU0467                          STATION RECOVERY (1987)
 HU0467
 HU0467'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU0467'THE STATION IS LOCATED ABOUT 6.8 KM (4.2 MI) SOUTH-SOUTHWEST OF
 HU0467'SALISBURY, 13.0 KM (8.1 MI) SOUTHEAST OF HEBRON AND 1.2 KM (0.7 MI)
 HU0467'SOUTH-SOUTHWEST OF FRUITLAND.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU0467'
 HU0467'TO REACH THE STATION FROM THE POST OFFICE IN FRUITLAND MARYLAND, GO
 HU0467'NORTHWEST FOR 0.2 KM (0.1 MI) ON EAST MAIN STREET TO A CROSSROADS.
 HU0467'TURN LEFT AND GO SOUTH FOR 1.2 KM (0.7 MI) ON U.S. HIGHWAY 13 TO THE
 HU0467'MARK ON THE RIGHT.
 HU0467'
 HU0467'THE STATION IS A STANDARD CGS DISK STAMPED---FRUITLAND 1955---, SET
 HU0467'INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM (12 INCHES) IN
 HU0467'DIAMETER FLUSH WITH THE GROUND.  LOCATED 1.7 M (5.6 FT) SOUTHEAST FROM
 HU0467'A WITNESS POST, 14.0 M (45.9 FT) NORTHWEST FROM THE CENTERLINE OF THE
 HU0467'SOUTHBOUND LANE OF U.S. HIGHWAY 13, 52.1 M (170.9 FT) SOUTH-SOUTHWEST
 HU0467'FROM A POWER LINE POLE NUMBER 46064-91256 AND 26.4 M (86.6 FT) WEST
 HU0467'FROM A 12-INCH (30 CM) CYPRESS TREE.
 HU0467
 HU0467                          STATION RECOVERY (1997)
 HU0467
 HU0467'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0467'MARK NOT FOUND.
 HU0467
 HU0467                          STATION RECOVERY (2019)
 HU0467
 HU0467'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HU0467'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0464 ***********************************************************************
 HU0464  DESIGNATION -  FRUITLAND RM 1
 HU0464  PID         -  HU0464
 HU0464  STATE/COUNTY-  MD/WICOMICO
 HU0464  COUNTRY     -  US
 HU0464  USGS QUAD   -  SALISBURY (2016)
 HU0464
 HU0464                         *CURRENT SURVEY CONTROL
 HU0464  ______________________________________________________________________
 HU0464* NAD 83(1991) POSITION- 38 18 57.89426(N) 075 37 24.77923(W)   ADJUSTED
 HU0464* NAVD 88 ORTHO HEIGHT -    11.077 (meters)       36.34  (feet) ADJUSTED
 HU0464  ______________________________________________________________________
 HU0464  GEOID HEIGHT    -        -35.883 (meters)                     GEOID18
 HU0464  LAPLACE CORR    -         -1.32  (seconds)                    DEFLEC18
 HU0464  DYNAMIC HEIGHT  -         11.070 (meters)       36.32  (feet) COMP
 HU0464  MODELED GRAVITY -    980,000.2   (mgal)                       NAVD 88
 HU0464
 HU0464  HORZ ORDER      -  THIRD
 HU0464  VERT ORDER      -  FIRST     CLASS I
 HU0464
 HU0464.The horizontal coordinates were established by classical geodetic methods
 HU0464.and adjusted by the National Geodetic Survey in January 1992.
 HU0464
 HU0464.The orthometric height was determined by differential leveling and
 HU0464.adjusted by the NATIONAL GEODETIC SURVEY
 HU0464.in June 1991.
 HU0464
 HU0464.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0464.GEOID18 height accuracy estimate available here.
 HU0464
 HU0464.Click photographs - Photos may exist for this station.
 HU0464
 HU0464.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0464
 HU0464.The dynamic height is computed by dividing the NAVD 88
 HU0464.geopotential number by the normal gravity value computed on the
 HU0464.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0464.degrees latitude (g = 980.6199 gals.).
 HU0464
 HU0464.The modeled gravity was interpolated from observed gravity values.
 HU0464
 HU0464. The following values were computed from the NAD 83(1991) position.
 HU0464
 HU0464;                    North         East     Units Scale Factor Converg.
 HU0464;SPC MD       -    72,995.461   520,371.367   MT  0.99999724   +0 51 50.1
 HU0464;SPC MD       -   239,485.94  1,707,251.73   sFT  0.99999724   +0 51 50.1
 HU0464;UTM  18      - 4,241,069.799   445,489.555   MT  0.99963659   -0 23 11.8
 HU0464
 HU0464!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0464!SPC MD       -   1.00000389  x   0.99999724  =   1.00000113
 HU0464!UTM  18      -   1.00000389  x   0.99963659  =   0.99964048
 HU0464
 HU0464_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4548941069(NAD 83)
 HU0464
 HU0464                          SUPERSEDED SURVEY CONTROL
 HU0464
 HU0464  NAD 83(1986)-  38 18 57.88708(N)    075 37 24.80589(W) AD(       ) 3
 HU0464  NGVD 29              11.33   (m)           37.2    (f) LEVELING    3  
 HU0464  NGVD 29 (11/26/84)   11.332  (m)           37.18   (f) ADJUSTED    1 1
 HU0464
 HU0464.Superseded values are not recommended for survey control.
 HU0464
 HU0464.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0464.See file dsdata.pdf to determine how the superseded data were derived.
 HU0464
 HU0464_MARKER: DR = REFERENCE MARK DISK
 HU0464_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0464_STAMPING: FRUITLAND NO 1 1955
 HU0464_MARK LOGO: CGS
 HU0464_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0464+STABILITY: SURFACE MOTION
 HU0464
 HU0464  HISTORY     - Date     Condition        Report By
 HU0464  HISTORY     - 1955     MONUMENTED       CGS
 HU0464  HISTORY     - 1972     GOOD             NGS
 HU0464  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0464  HISTORY     - 20050907 MARK NOT FOUND   GEOCAC
 HU0464
 HU0464                          STATION DESCRIPTION
 HU0464
 HU0464'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0464'0.4 MI SW FROM FRUITLAND.
 HU0464'ABOUT 0.45 MILE SOUTHWEST ALONG THE PENN CENTRAL RAILROAD FROM
 HU0464'THE CROSSING OF MAIN STREET AT FRUITLAND, 0.1 MILE SOUTHWEST OF
 HU0464'MILEPOST 10, 235 FEET NORTHEAST OF THE CROSSING OF SOUTH DIVISION
 HU0464'STREET, 109 FEET SOUTHEAST OF THE CENTER LINE OF THE NORTHBOUND
 HU0464'LANE OF U.S. HIGHWAY 13, 48.4 FEET NORTHWEST OF THE NORTHWEST
 HU0464'RAIL, 80.7 FEET EAST-NORTHEAST OF THE STATION MARK DESCRIBED,
 HU0464'121.0 FEET NORTHEAST OF RM 2 DESCRIBED, 1.5 FEET SOUTHWEST OF
 HU0464'A METAL WITNESS POST, 2 1/2 FEET BELOW THE LEVEL OF THE TRACK AND
 HU0464'SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE LEVEL OF THE
 HU0464'GROUND.
 HU0464
 HU0464                          STATION RECOVERY (1997)
 HU0464
 HU0464'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0464'MARK NOT FOUND.
 HU0464
 HU0464                          STATION RECOVERY (2005)
 HU0464
 HU0464'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0464'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0466 ***********************************************************************
 HU0466  DESIGNATION -  FRUITLAND RM 2
 HU0466  PID         -  HU0466
 HU0466  STATE/COUNTY-  MD/WICOMICO
 HU0466  COUNTRY     -  US
 HU0466  USGS QUAD   -  SALISBURY (2016)
 HU0466
 HU0466                         *CURRENT SURVEY CONTROL
 HU0466  ______________________________________________________________________
 HU0466* NAD 83(1991) POSITION- 38 18 56.83606(N) 075 37 25.49953(W)   ADJUSTED
 HU0466* NAVD 88 ORTHO HEIGHT -    11.201 (meters)       36.75  (feet) ADJUSTED
 HU0466  ______________________________________________________________________
 HU0466  GEOID HEIGHT    -        -35.884 (meters)                     GEOID18
 HU0466  LAPLACE CORR    -         -1.32  (seconds)                    DEFLEC18
 HU0466  DYNAMIC HEIGHT  -         11.193 (meters)       36.72  (feet) COMP
 HU0466  MODELED GRAVITY -    980,000.3   (mgal)                       NAVD 88
 HU0466
 HU0466  HORZ ORDER      -  THIRD
 HU0466  VERT ORDER      -  FIRST     CLASS I
 HU0466
 HU0466.The horizontal coordinates were established by classical geodetic methods
 HU0466.and adjusted by the National Geodetic Survey in January 1992.
 HU0466
 HU0466.The orthometric height was determined by differential leveling and
 HU0466.adjusted by the NATIONAL GEODETIC SURVEY
 HU0466.in June 1991.
 HU0466
 HU0466.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0466.GEOID18 height accuracy estimate available here.
 HU0466
 HU0466.Click photographs - Photos may exist for this station.
 HU0466
 HU0466.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0466
 HU0466.The dynamic height is computed by dividing the NAVD 88
 HU0466.geopotential number by the normal gravity value computed on the
 HU0466.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0466.degrees latitude (g = 980.6199 gals.).
 HU0466
 HU0466.The modeled gravity was interpolated from observed gravity values.
 HU0466
 HU0466. The following values were computed from the NAD 83(1991) position.
 HU0466
 HU0466;                    North         East     Units Scale Factor Converg.
 HU0466;SPC MD       -    72,962.572   520,354.363   MT  0.99999729   +0 51 49.6
 HU0466;SPC MD       -   239,378.04  1,707,195.94   sFT  0.99999729   +0 51 49.6
 HU0466;UTM  18      - 4,241,037.301   445,471.844   MT  0.99963662   -0 23 12.2
 HU0466
 HU0466!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0466!SPC MD       -   1.00000387  x   0.99999729  =   1.00000116
 HU0466!UTM  18      -   1.00000387  x   0.99963662  =   0.99964049
 HU0466
 HU0466_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4547141037(NAD 83)
 HU0466
 HU0466                          SUPERSEDED SURVEY CONTROL
 HU0466
 HU0466  NAD 83(1986)-  38 18 56.82903(N)    075 37 25.52642(W) AD(       ) 3
 HU0466  NGVD 29              11.46   (m)           37.6    (f) LEVELING    3  
 HU0466  NGVD 29 (11/26/84)   11.456  (m)           37.59   (f) ADJUSTED    1 1
 HU0466
 HU0466.Superseded values are not recommended for survey control.
 HU0466
 HU0466.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0466.See file dsdata.pdf to determine how the superseded data were derived.
 HU0466
 HU0466_MARKER: DR = REFERENCE MARK DISK
 HU0466_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0466_STAMPING: FRUITLAND NO 2 1955
 HU0466_MARK LOGO: CGS
 HU0466_PROJECTION: FLUSH
 HU0466_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0466+STABILITY: SURFACE MOTION
 HU0466_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0466+SATELLITE: SATELLITE OBSERVATIONS - November 27, 2019
 HU0466
 HU0466  HISTORY     - Date     Condition        Report By
 HU0466  HISTORY     - 1955     MONUMENTED       CGS
 HU0466  HISTORY     - 1972     GOOD             NGS
 HU0466  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0466  HISTORY     - 20050907 GOOD             GEOCAC
 HU0466  HISTORY     - 20191127 GOOD             ARCSHE
 HU0466
 HU0466                          STATION DESCRIPTION
 HU0466
 HU0466'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0466'0.4 MI SW FROM FRUITLAND.
 HU0466'ABOUT 0.45 MILE SOUTHWEST ALONG THE PENN CENTRAL RAILROAD FROM
 HU0466'THE CROSSING OF MAIN STREET AT FRUITLAND, 114 FEET NORTHEAST OF
 HU0466'THE CENTER OF THE CROSSING OF SOUTH DIVISION STREET, 81.8 FEET
 HU0466'SOUTH OF THE STATION MARK DESCRIBED, 115 FEET SOUTHEAST OF THE
 HU0466'CENTER LINE OF THE NORTHBOUND LANE OF U.S. HIGHWAY 13, 41 FEET
 HU0466'NORTHWEST OF THE NORTHWEST RAIL OF THE TRACK, 21 FEET SOUTHWEST OF
 HU0466'POWER LINE POLE 357, 121 FEET SOUTHWEST OF RM 1 DESCRIBED,
 HU0466'1 1/2 FEET SOUTHWEST OF A METAL WITNESS POST, 2 1/2 FEET BELOW
 HU0466'THE LEVEL OF THE TRACK AND SET IN THE TOP OF A CONCRETE POST
 HU0466'FLUSH WITH THE LEVEL OF THE GROUND.
 HU0466
 HU0466                          STATION RECOVERY (1997)
 HU0466
 HU0466'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0466'MARK NOT FOUND.
 HU0466
 HU0466                          STATION RECOVERY (2005)
 HU0466
 HU0466'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU0466'RECOVERED IN GOOD CONDITION.
 HU0466
 HU0466                          STATION RECOVERY (2019)
 HU0466
 HU0466'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HU0466'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5842 ***********************************************************************
 JV5842  DESIGNATION -  FT MEADE 2ND ARMY RAD TOWER
 JV5842  PID         -  JV5842
 JV5842  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5842  COUNTRY     -  US
 JV5842  USGS QUAD   -  RELAY (2016)
 JV5842
 JV5842                         *CURRENT SURVEY CONTROL
 JV5842  ______________________________________________________________________
 JV5842* NAD 83(1991) POSITION- 39 07 38.07597(N) 076 45 00.79795(W)   ADJUSTED
 JV5842  ______________________________________________________________________
 JV5842  GEOID HEIGHT    -        -32.500 (meters)                     GEOID18
 JV5842  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 JV5842  HORZ ORDER      -  THIRD
 JV5842
 JV5842.The horizontal coordinates were established by classical geodetic methods
 JV5842.and adjusted by the National Geodetic Survey in January 1992.
 JV5842
 JV5842.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5842.GEOID18 height accuracy estimate available here.
 JV5842
 JV5842.Click photographs - Photos may exist for this station.
 JV5842
 JV5842.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5842
 JV5842. The following values were computed from the NAD 83(1991) position.
 JV5842
 JV5842;                    North         East     Units Scale Factor Converg.
 JV5842;SPC MD       -   162,161.259   421,597.689   MT  0.99995945   +0 09 24.4
 JV5842;SPC MD       -   532,024.06  1,383,191.75   sFT  0.99995945   +0 09 24.4
 JV5842;UTM  18      - 4,332,355.475   348,712.217   MT  0.99988183   -1 06 16.8
 JV5842
 JV5842_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4871232355(NAD 83)
 JV5842
 JV5842                          SUPERSEDED SURVEY CONTROL
 JV5842
 JV5842  NAD 83(1986)-  39 07 38.07206(N)    076 45 00.80572(W) AD(       ) 3
 JV5842  NAD 27      -  39 07 37.67906(N)    076 45 01.90620(W) AD(       ) 3
 JV5842
 JV5842.Superseded values are not recommended for survey control.
 JV5842
 JV5842.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5842.See file dsdata.pdf to determine how the superseded data were derived.
 JV5842
 JV5842_MARKER: 43 = RADIO/TV TOWER
 JV5842_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5842+SATELLITE: SATELLITE OBSERVATIONS - September 30, 2003
 JV5842
 JV5842  HISTORY     - Date     Condition        Report By
 JV5842  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5842  HISTORY     - 1983     GOOD             USPSQD
 JV5842  HISTORY     - 20030930 GOOD             USPSQD
 JV5842
 JV5842                          STATION DESCRIPTION
 JV5842
 JV5842'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5842'THE STATION IS LOCATED ON A HILL IN THE NORTHWEST SECTION OF THE
 JV5842'FORT GEORGE G. MEADE MILITARY RESERVATION, AT SITE F AND DIRECTLY
 JV5842'BEHIND BUILDING NO. 3900.  THE STATION IS A LARGE RECTANGULAR
 JV5842'STEEL STRUCTURE, ABOUT 250 FEET HIGH AND HAS A RED LIGHT ON TOP
 JV5842'OF TOWER.  THE POINT INTERSECTED WAS THE RED LIGHT ON TOP.
 JV5842'
 JV5842'THE STATION MAY BE REACHED FROM THE JUNCTION OF STATE HIGHWAY
 JV5842'175 AND 713, WHICH IS ABOUT 1.0 MILE WEST OF THE RED BRICK
 JV5842'HOUSING AREA IN FORT MEADE.  GO SOUTH ON STATE HIGHWAY 713 FOR
 JV5842'1.1 MILES TO CROSSROADS JUST AFTER PASSING A SMALL BRIDGE.  TURN
 JV5842'RIGHT OR WEST FOR 0.15 MILE TO THE STATION IN A FENCED IN AREA.
 JV5842
 JV5842                          STATION RECOVERY (1983)
 JV5842
 JV5842'RECOVERY NOTE BY US POWER SQUADRON 1983 (WAY)
 JV5842'STATION RECOVERED GOOD.
 JV5842'
 JV5842'TOWER AS DESCRIBED ACCESS ROADS HAVE BEEN ALTERED.  TO REACH FROM
 JV5842'INT OF MD 175 AND 713 GO SOUTH TO COOPER AVE (FIRST TRAFFIC LIGHT
 JV5842'TURN RIGHT AND FOLLOW TO DEAD END AT FENCE AROUND TOWER.
 JV5842
 JV5842                          STATION RECOVERY (2003)
 JV5842
 JV5842'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV5842'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6557 ***********************************************************************
 JV6557  DESIGNATION -  FUNK 2
 JV6557  PID         -  JV6557
 JV6557  STATE/COUNTY-  MD/WASHINGTON
 JV6557  COUNTRY     -  US
 JV6557  USGS QUAD   -  FUNKSTOWN (2017)
 JV6557
 JV6557                         *CURRENT SURVEY CONTROL
 JV6557  ______________________________________________________________________
 JV6557* NAD 83(1991) POSITION- 39 37 01.25056(N) 077 42 40.39296(W)   ADJUSTED
 JV6557* NAVD 88 ORTHO HEIGHT -   161.66  (meters)      530.4   (feet) RESET
 JV6557  ______________________________________________________________________
 JV6557  GEOID HEIGHT    -        -34.085 (meters)                     GEOID18
 JV6557  LAPLACE CORR    -          4.81  (seconds)                    DEFLEC18
 JV6557  HORZ ORDER      -  THIRD
 JV6557  VERT ORDER      -  THIRD
 JV6557
 JV6557.The horizontal coordinates were established by classical geodetic methods
 JV6557.and adjusted by the National Geodetic Survey in January 1992.
 JV6557
 JV6557.The orthometric height was computed from unverified reset data.
 JV6557
 JV6557.No vertical observational check was made to the station.
 JV6557
 JV6557.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6557.GEOID18 height accuracy estimate available here.
 JV6557
 JV6557.Click photographs - Photos may exist for this station.
 JV6557
 JV6557.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6557
 JV6557. The following values were computed from the NAD 83(1991) position.
 JV6557
 JV6557;                    North         East     Units Scale Factor Converg.
 JV6557;SPC MD       -   216,744.712   338,926.791   MT  1.00003349   -0 26 47.0
 JV6557;SPC MD       -   711,103.28  1,111,962.31   sFT  1.00003349   -0 26 47.0
 JV6557;UTM  18      - 4,388,763.567   267,266.913   MT  1.00026691   -1 43 46.5
 JV6557
 JV6557!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6557!SPC MD       -   0.99997999  x   1.00003349  =   1.00001348
 JV6557!UTM  18      -   0.99997999  x   1.00026691  =   1.00024689
 JV6557
 JV6557:                Primary Azimuth Mark                     Grid Az
 JV6557:SPC MD       -  HAGERSTOWN N AM CEMENT CO STK            036 09 10.4
 JV6557:UTM  18      -  HAGERSTOWN N AM CEMENT CO STK            037 26 09.9
 JV6557
 JV6557_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6726688763(NAD 83)
 JV6557
 JV6557|---------------------------------------------------------------------|
 JV6557| PID    Reference Object                     Distance      Geod. Az  |
 JV6557|                                                           dddmmss.s |
 JV6557| JV3558 FUNK                                 27.289 METERS 01327     |
 JV6557| JV4703 HAGERSTOWN N AM CEMENT CO STK       APPROX. 4.7 KM 0354223.4 |
 JV6557| JV6558 FUNK 2 RM 3                           9.606 METERS 24200     |
 JV6557| JV4706 HAGERSTOWN WEST MD RR SHOP STK      APPROX. 3.1 KM 3213510.8 |
 JV6557| JV3560 FUNK RM 2                            25.368 METERS 32706     |
 JV6557| JV6559 FUNK 2 RM 4                           7.115 METERS 32849     |
 JV6557| JV4715 HAGERSTOWN ST JOHNS LUTH CH         APPROX. 2.7 KM 3402431.6 |
 JV6557|---------------------------------------------------------------------|
 JV6557
 JV6557                          SUPERSEDED SURVEY CONTROL
 JV6557
 JV6557  NAD 83(1986)-  39 37 01.25039(N)    077 42 40.40355(W) AD(       ) 3
 JV6557  NGVD 29 (11/18/05)  161.86   (m)          531.0    (f) RESET       3  
 JV6557  NGVD 29             161.86   (m)          531.0    (f) LEVELING    3  
 JV6557
 JV6557.Superseded values are not recommended for survey control.
 JV6557
 JV6557.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6557.See file dsdata.pdf to determine how the superseded data were derived.
 JV6557
 JV6557_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6557_SETTING: 66 = SET IN ROCK OUTCROP
 JV6557_STAMPING: FUNK 2 1983
 JV6557_MARK LOGO: NGS
 JV6557_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6557_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6557+STABILITY: POSITION/ELEVATION WELL
 JV6557_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6557+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2005
 JV6557
 JV6557  HISTORY     - Date     Condition        Report By
 JV6557  HISTORY     - 1983     MONUMENTED       NGS
 JV6557  HISTORY     - 20050316 GOOD             GEOCAC
 JV6557
 JV6557                          STATION DESCRIPTION
 JV6557
 JV6557'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JV6557'1.1 KM (0.70 MI) NORTH FROM FUNKSTOWN.
 JV6557'FROM THE POST OFFICE IN FUNKSVILLE, GO WEST ON WASHINGTON STREET FOR
 JV6557'0.25 KM (0.15 MI) TO A CROSSROADS.  TURN RIGHT AND GO NORTH-NORTHWEST
 JV6557'ON ALTERNATE U.S. HIGHWAY 40 (NORTH WEST SIDE AVENUE) FOR 0.8 KM
 JV6557'(0.50 MI) TO A HOUSE ON THE RIGHT BELONGING TO A MRS. HARP AND THE
 JV6557'BENCH MARK BEHIND THE HOUSE, 27.4 M (89.9 FT) EAST FROM THE NORTHEAST
 JV6557'CORNER OF THE HOUSE, 11.1 M (36.4 FT) EAST FROM A 14-INCH PINE TREE,
 JV6557'6.4 METERS EAST FROM A 12-INCH PINE TREE AND 7.0 M (23.0 FT)
 JV6557'SOUTH-SOUTHEAST FROM A PROPERTY CORNER STAKE.
 JV6557'THE MARK IS 1.6 METERS  W FROM  A WITNESS POST
 JV6557'THE MARK IS 0.05 M ABOVE THE GROUND.
 JV6557
 JV6557                          STATION RECOVERY (2005)
 JV6557
 JV6557'RECOVERY NOTE BY GEOCACHING 2005 (CRC)
 JV6557'CORDS WERE VERY TIGHT.  COULD NOT LOCATE THE RM BUT DIDN'T LOOK FOR
 JV6557'LONG.  PROPERTY NOW OWNED BY DONALD AND KATHY SEBURN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6558 ***********************************************************************
 JV6558  DESIGNATION -  FUNK 2 RM 3
 JV6558  PID         -  JV6558
 JV6558  STATE/COUNTY-  MD/WASHINGTON
 JV6558  COUNTRY     -  US
 JV6558  USGS QUAD   -  FUNKSTOWN (2017)
 JV6558
 JV6558                         *CURRENT SURVEY CONTROL
 JV6558  ______________________________________________________________________
 JV6558* NAD 83(1991) POSITION- 39 37 01.10430(N) 077 42 40.74854(W)   ADJUSTED
 JV6558* NAVD 88 ORTHO HEIGHT -   161.44  (meters)      529.7   (feet) RESET
 JV6558  ______________________________________________________________________
 JV6558  GEOID HEIGHT    -        -34.085 (meters)                     GEOID18
 JV6558  LAPLACE CORR    -          4.81  (seconds)                    DEFLEC18
 JV6558  HORZ ORDER      -  THIRD
 JV6558  VERT ORDER      -  THIRD
 JV6558
 JV6558.The horizontal coordinates were established by classical geodetic methods
 JV6558.and adjusted by the National Geodetic Survey in January 1992.
 JV6558
 JV6558.The orthometric height was computed from unverified reset data.
 JV6558
 JV6558.No vertical observational check was made to the station.
 JV6558
 JV6558.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6558.GEOID18 height accuracy estimate available here.
 JV6558
 JV6558.Click photographs - Photos may exist for this station.
 JV6558
 JV6558.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6558
 JV6558. The following values were computed from the NAD 83(1991) position.
 JV6558
 JV6558;                    North         East     Units Scale Factor Converg.
 JV6558;SPC MD       -   216,740.267   338,918.275   MT  1.00003348   -0 26 47.2
 JV6558;SPC MD       -   711,088.69  1,111,934.37   sFT  1.00003348   -0 26 47.2
 JV6558;UTM  18      - 4,388,759.313   267,258.297   MT  1.00026696   -1 43 46.8
 JV6558
 JV6558!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6558!SPC MD       -   0.99998002  x   1.00003348  =   1.00001350
 JV6558!UTM  18      -   0.99998002  x   1.00026696  =   1.00024698
 JV6558
 JV6558_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6725888759(NAD 83)
 JV6558
 JV6558                          SUPERSEDED SURVEY CONTROL
 JV6558
 JV6558  NAD 83(1986)-  39 37 01.10412(N)    077 42 40.75914(W) AD(       ) 3
 JV6558  NGVD 29 (11/18/05)  161.64   (m)          530.3    (f) RESET       3  
 JV6558  NGVD 29             161.64   (m)          530.3    (f) LEVELING    3  
 JV6558
 JV6558.Superseded values are not recommended for survey control.
 JV6558
 JV6558.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6558.See file dsdata.pdf to determine how the superseded data were derived.
 JV6558
 JV6558_MARKER: DR = REFERENCE MARK DISK
 JV6558_SETTING: 66 = SET IN ROCK OUTCROP
 JV6558_STAMPING: FUNK 2 NO 3 1983
 JV6558_MARK LOGO: NGS
 JV6558_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6558_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6558+STABILITY: POSITION/ELEVATION WELL
 JV6558
 JV6558  HISTORY     - Date     Condition        Report By
 JV6558  HISTORY     - 1983     MONUMENTED       NGS
 JV6558
 JV6558                          STATION DESCRIPTION
 JV6558
 JV6558'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JV6558'1.1 KM (0.70 MI) NORTH FROM FUNKSTOWN.
 JV6558'FROM THE POST OFFICE IN FUNKSTOWN, GO WEST ON BALTIMORE STREET FOR
 JV6558'0.25 KM (0.15 MI) TO A CROSSROADS.  TURN RIGHT AND GO NORTH-NORTHWEST
 JV6558'ON ALTERNATE U.S. HIGHWAY 40 (NORTH WEST SIDE AVENUE) FOR 0.8 KM
 JV6558'(0.50 MI) TO A HOUSE ON THE RIGHT AND THE BENCH MARK BEHIND THE HOUSE,
 JV6558'18.0 M (59.1 FT) EAST FROM THE NORTHEAST CORNER OF MRS. HARPS HOUSE,
 JV6558'6.8 M (22.3 FT) SOUTH FROM THE 14-INCH PINE TREE AND 3.8 M (12.5 FT)
 JV6558'SOUTHWEST FROM THE 12-INCH PINE TREE.
 JV6558'THE MARK IS 11.2 METERS  W FROM  A WITNESS POST
 JV6558'THE MARK IS ABOVE LEVEL WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6559 ***********************************************************************
 JV6559  DESIGNATION -  FUNK 2 RM 4
 JV6559  PID         -  JV6559
 JV6559  STATE/COUNTY-  MD/WASHINGTON
 JV6559  COUNTRY     -  US
 JV6559  USGS QUAD   -  FUNKSTOWN (2017)
 JV6559
 JV6559                         *CURRENT SURVEY CONTROL
 JV6559  ______________________________________________________________________
 JV6559* NAD 83(1991) POSITION- 39 37 01.44794(N) 077 42 40.54742(W)   ADJUSTED
 JV6559* NAVD 88 ORTHO HEIGHT -   161.31  (meters)      529.2   (feet) RESET
 JV6559  ______________________________________________________________________
 JV6559  GEOID HEIGHT    -        -34.085 (meters)                     GEOID18
 JV6559  LAPLACE CORR    -          4.81  (seconds)                    DEFLEC18
 JV6559  HORZ ORDER      -  THIRD
 JV6559  VERT ORDER      -  THIRD
 JV6559
 JV6559.The horizontal coordinates were established by classical geodetic methods
 JV6559.and adjusted by the National Geodetic Survey in January 1992.
 JV6559
 JV6559.The orthometric height was computed from unverified reset data.
 JV6559
 JV6559.No vertical observational check was made to the station.
 JV6559
 JV6559.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6559.GEOID18 height accuracy estimate available here.
 JV6559
 JV6559.Click photographs - Photos may exist for this station.
 JV6559
 JV6559.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6559
 JV6559. The following values were computed from the NAD 83(1991) position.
 JV6559
 JV6559;                    North         East     Units Scale Factor Converg.
 JV6559;SPC MD       -   216,750.828   338,923.154   MT  1.00003350   -0 26 47.1
 JV6559;SPC MD       -   711,123.34  1,111,950.38   sFT  1.00003350   -0 26 47.1
 JV6559;UTM  18      - 4,388,769.765   267,263.413   MT  1.00026693   -1 43 46.6
 JV6559
 JV6559!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6559!SPC MD       -   0.99998004  x   1.00003350  =   1.00001354
 JV6559!UTM  18      -   0.99998004  x   1.00026693  =   1.00024696
 JV6559
 JV6559_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6726388769(NAD 83)
 JV6559
 JV6559                          SUPERSEDED SURVEY CONTROL
 JV6559
 JV6559  NAD 83(1986)-  39 37 01.44777(N)    077 42 40.55801(W) AD(       ) 3
 JV6559  NGVD 29 (11/18/05)  161.52   (m)          529.9    (f) RESET       3  
 JV6559  NGVD 29             161.52   (m)          529.9    (f) LEVELING    3  
 JV6559
 JV6559.Superseded values are not recommended for survey control.
 JV6559
 JV6559.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6559.See file dsdata.pdf to determine how the superseded data were derived.
 JV6559
 JV6559_MARKER: DR = REFERENCE MARK DISK
 JV6559_SETTING: 66 = SET IN ROCK OUTCROP
 JV6559_STAMPING: FUNK 2 NO 4 1983
 JV6559_MARK LOGO: NGS
 JV6559_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6559_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6559+STABILITY: POSITION/ELEVATION WELL
 JV6559
 JV6559  HISTORY     - Date     Condition        Report By
 JV6559  HISTORY     - 1983     MONUMENTED       NGS
 JV6559
 JV6559                          STATION DESCRIPTION
 JV6559
 JV6559'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JV6559'1.1 KM (0.70 MI) NORTH FROM FUNKSTOWN.
 JV6559'FROM THE POST OFFICE IN FUNKSTOWN, GO WEST ON BALTIMORE STREET FOR
 JV6559'0.25 KM (0.15 MI) TO A CROSSROADS.  TURN RIGHT AND GO NORTH-NORTHWEST
 JV6559'ON ALTERNATE U.S. HIGHWAY 40 (NORTH WEST SIDE AVENUE) FOR 0.8 KM
 JV6559'(0.50 MI) TO A HOUSE ON THE RIGHT AND THE BENCH MARK BEHIND THE HOUSE,
 JV6559'27.1 M (88.9 FT) EAST-NORTHEAST FROM THE NORTHEAST CORNER OF MRS.
 JV6559'HARPS HOUSE, 8.7 M (28.5 FT) WEST FROM A 14-INCH PINE TREE, 8.1 M
 JV6559'(26.6 FT) NORTH-NORTHWEST FROM A 12-INCH PINE TREE AND 0.9 M (3.0 FT)
 JV6559'WEST FROM A PROPERTY CORNER STAKE.
 JV6559'THE MARK IS 7.6 METERS  NNW FROM  A WITNESS POST
 JV6559'THE MARK IS ABOVE LEVEL WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2706 ***********************************************************************
 HU2706  CBN         -  This is a Cooperative Base Network Control Station.
 HU2706  DESIGNATION -  FURNACE
 HU2706  PID         -  HU2706
 HU2706  STATE/COUNTY-  MD/WORCESTER
 HU2706  COUNTRY     -  US
 HU2706  USGS QUAD   -  SNOW HILL (2016)
 HU2706
 HU2706                         *CURRENT SURVEY CONTROL
 HU2706  ______________________________________________________________________
 HU2706* NAD 83(2011) POSITION- 38 11 22.93729(N) 075 24 26.79954(W)   ADJUSTED
 HU2706* NAD 83(2011) ELLIP HT-   -29.962 (meters)        (06/27/12)   ADJUSTED
 HU2706* NAD 83(2011) EPOCH   -  2010.00
 HU2706* NAVD 88 ORTHO HEIGHT -     6.199 (meters)       20.34  (feet) ADJUSTED
 HU2706  ______________________________________________________________________
 HU2706  GEOID HEIGHT    -        -36.189 (meters)                     GEOID18
 HU2706  NAD 83(2011) X  -  1,264,609.453 (meters)                     COMP
 HU2706  NAD 83(2011) Y  - -4,857,497.695 (meters)                     COMP
 HU2706  NAD 83(2011) Z  -  3,921,997.020 (meters)                     COMP
 HU2706  LAPLACE CORR    -         -0.51  (seconds)                    DEFLEC18
 HU2706  DYNAMIC HEIGHT  -          6.195 (meters)       20.32  (feet) COMP
 HU2706  MODELED GRAVITY -    979,986.1   (mgal)                       NAVD 88
 HU2706
 HU2706  VERT ORDER      -  SECOND    CLASS I
 HU2706
 HU2706  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2706  Standards:
 HU2706         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2706            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2706  -------------------------------------------------------------------
 HU2706  NETWORK    0.77   1.51           0.33   0.30   0.77     -0.04574115
 HU2706  -------------------------------------------------------------------
 HU2706  Click here for local accuracies and other accuracy information.
 HU2706
 HU2706.The horizontal coordinates were established by GPS observations
 HU2706.and adjusted by the National Geodetic Survey in June 2012.
 HU2706
 HU2706.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2706.been affixed to the stable North American tectonic plate. See 
 HU2706.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2706
 HU2706.The horizontal coordinates are valid at the epoch date displayed above
 HU2706.which is a decimal equivalence of Year/Month/Day.
 HU2706
 HU2706.The orthometric height was determined by differential leveling and
 HU2706.adjusted by the NATIONAL GEODETIC SURVEY
 HU2706.in August 1994.
 HU2706
 HU2706.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2706.GEOID18 height accuracy estimate available here.
 HU2706
 HU2706.Click photographs - Photos may exist for this station.
 HU2706
 HU2706.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2706
 HU2706.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2706
 HU2706.The ellipsoidal height was determined by GPS observations
 HU2706.and is referenced to NAD 83.
 HU2706
 HU2706.The dynamic height is computed by dividing the NAVD 88
 HU2706.geopotential number by the normal gravity value computed on the
 HU2706.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2706.degrees latitude (g = 980.6199 gals.).
 HU2706
 HU2706.The modeled gravity was interpolated from observed gravity values.
 HU2706
 HU2706. The following values were computed from the NAD 83(2011) position.
 HU2706
 HU2706;                    North         East     Units Scale Factor Converg.
 HU2706;SPC MD       -    59,276.793   539,512.841   MT  1.00002102   +0 59 58.4
 HU2706;SPC MD       -   194,477.28  1,770,051.71   sFT  1.00002102   +0 59 58.4
 HU2706;UTM  18      - 4,226,941.940   464,319.754   MT  0.99961568   -0 15 06.9
 HU2706
 HU2706!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2706!SPC MD       -   1.00000470  x   1.00002102  =   1.00002572
 HU2706!UTM  18      -   1.00000470  x   0.99961568  =   0.99962038
 HU2706
 HU2706_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6431926941(NAD 83)
 HU2706
 HU2706                          SUPERSEDED SURVEY CONTROL
 HU2706
 HU2706  NAD 83(2007)-  38 11 22.93760(N)    075 24 26.80024(W) AD(2002.00) 0
 HU2706  ELLIP H (02/10/07)  -29.941  (m)                       GP(2002.00)    
 HU2706  ELLIP H (02/12/02)  -29.948  (m)                       GP(       ) 4 1
 HU2706  NAD 83(1991)-  38 11 22.93782(N)    075 24 26.79942(W) AD(       ) B
 HU2706  ELLIP H (10/23/91)  -29.927  (m)                       GP(       ) 4 1
 HU2706  NAVD 88               6.20   (m)           20.3    (f) LEVELING    3  
 HU2706  NGVD 29               6.44   (m)           21.1    (f) LEVELING    3  
 HU2706
 HU2706.Superseded values are not recommended for survey control.
 HU2706
 HU2706.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2706.See file dsdata.pdf to determine how the superseded data were derived.
 HU2706
 HU2706_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2706_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2706_STAMPING: FURNACE 1990
 HU2706_MARK LOGO: NGS
 HU2706_PROJECTION: FLUSH
 HU2706_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2706_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2706+STABILITY: SURFACE MOTION
 HU2706_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2706+SATELLITE: SATELLITE OBSERVATIONS - May 05, 2020
 HU2706
 HU2706  HISTORY     - Date     Condition        Report By
 HU2706  HISTORY     - 1990     MONUMENTED       NGS
 HU2706  HISTORY     - 19910110 GOOD             NGS
 HU2706  HISTORY     - 20000210 GOOD             GEOMET
 HU2706  HISTORY     - 20000327 GOOD             MDSHA
 HU2706  HISTORY     - 20000519 GOOD             GEOMET
 HU2706  HISTORY     - 20000918 GOOD             GEOMET
 HU2706  HISTORY     - 20011006 GOOD             USPSQD
 HU2706  HISTORY     - 20090619 GOOD             JMTMD
 HU2706  HISTORY     - 20101003 GOOD             NGS
 HU2706  HISTORY     - 20200505 GOOD             MDSHA
 HU2706
 HU2706                          STATION DESCRIPTION
 HU2706
 HU2706'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2706'THE MARK IS LOCATED ABOUT 1.9 KM (1.2 MI) NORTHWEST OF THE TOWN OF
 HU2706'SNOW HILL IN THE EAST ANGLE OF THE INTERSECTION OF STATE HIGHWAYS 354
 HU2706'AND 12. OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2706'IT IS 72.0 FT (21.9 M) NORTHEAST OF THE CENTERLINE OF STATE HIGHWAY
 HU2706'12, 50.0 FT (15.2 M) SOUTHEAST OF THE CENTERLINE OF STATE HIGHWAY
 HU2706'354, 25.0 FT (7.6 M) NORTH OF A TRAFFIC SIGNAL POLE, 13.3 FT (4.1 M)
 HU2706'NORTHWEST OF A METAL HISTORICAL SIGN, ABOUT 2.7 FT (0.8 M) BELOW THE
 HU2706'LEVEL OF THE HIGHWAY, SET IN THE TOP OF A 1.0 FT (0.3 M) ROUND
 HU2706'CONCRETE POST FLUSH WITH THE GROUND.
 HU2706'THE UNDERGROUND MARK IS 3.5 FT (1.1 M) BELOW GROUND.
 HU2706
 HU2706                          STATION RECOVERY (1991)
 HU2706
 HU2706'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU2706'STATION IS LOCATED ABOUT 1.9 KM (1.2 MI) NORTHWEST OF SNOW HILL, IN
 HU2706'THE EAST ANGLE OF THE INTERSECTION OF STATE HIGHWAYS 354 AND 12, AND
 HU2706'ON HIGHWAY RIGHT-OF-WAY.  OWNERSHIP--STATE HIGHWAY ADMINISTRATION.
 HU2706'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 12 WEST AND 394 AT THE
 HU2706'COURTHOUSE IN SNOW HILL, GO NORTHWEST ON HIGHWAY 12 FOR 1.89 KM
 HU2706'(1.17 MI) TO HIGHWAY 354 ON THE RIGHT AND THE STATION ON THE RIGHT.
 HU2706'STATION MARK IS SET IN THE TOP OF A 25-CM ROUND CONCRETE POST 1 CM
 HU2706'BELOW GROUND.  IT IS 22.1 M (72.5 FT) NORTHEAST OF THE CENTER OF
 HU2706'HIGHWAY 12, 15.1 M (49.5 FT) SOUTHEAST OF THE CENTER OF HIGHWAY 354,
 HU2706'6.0 M (19.7 FT) EAST OF THE CURVED PAVEMENT EDGE, 4.1 M (13.5 FT)
 HU2706'NORTH OF A STEEL POST SUPPORTING A HISTORICAL SIGN, AND 7.5 M
 HU2706'(24.6 FT) NORTH-NORTHEAST OF A METAL POLE SUPPORTING THE TRAFFIC
 HU2706'SIGNALS.
 HU2706'NOTE--ORIGINAL DESCRIPTION STATES THAT THERE IS AN UNDERGROUND MARK.
 HU2706'DESCRIBED BY G.R.HEID.
 HU2706
 HU2706                          STATION RECOVERY (2000)
 HU2706
 HU2706'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (DAR)
 HU2706'RECOVERED AS DESCRIBED.
 HU2706
 HU2706                          STATION RECOVERY (2000)
 HU2706
 HU2706'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HU2706'RECOVERED AS DESCRIBED.
 HU2706
 HU2706                          STATION RECOVERY (2000)
 HU2706
 HU2706'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (CCG)
 HU2706'VERY GOOD STATION.  VERY GOOD CONDITION.  EASY TO OCCUPY.
 HU2706
 HU2706                          STATION RECOVERY (2000)
 HU2706
 HU2706'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HU2706'RECOVERED IN GOOD CONDITION.
 HU2706
 HU2706                          STATION RECOVERY (2001)
 HU2706
 HU2706'RECOVERY NOTE BY US POWER SQUADRON 2001 (CGT)
 HU2706'RECOVERED IN GOOD CONDITION.
 HU2706
 HU2706                          STATION RECOVERY (2009)
 HU2706
 HU2706'RECOVERY NOTE BY JMT ENGINEERING 2009 (EAS)
 HU2706'CHECKED WITH 1HR OPUS-RS (N 0.03, E 0.02, Z 0.1)
 HU2706
 HU2706                          STATION RECOVERY (2010)
 HU2706
 HU2706'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HU2706'RECOVERED IN GOOD CONDITION.
 HU2706
 HU2706                          STATION RECOVERY (2020)
 HU2706
 HU2706'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (BC)
 HU2706'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5705 ***********************************************************************
 JV5705  DESIGNATION -  FURST
 JV5705  PID         -  JV5705
 JV5705  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5705  COUNTRY     -  US
 JV5705  USGS QUAD   -  CURTIS BAY (2016)
 JV5705
 JV5705                         *CURRENT SURVEY CONTROL
 JV5705  ______________________________________________________________________
 JV5705* NAD 83(1991) POSITION- 39 14 52.47073(N) 076 34 59.74932(W)   ADJUSTED
 JV5705* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5705  ______________________________________________________________________
 JV5705  GEOID HEIGHT    -        -32.864 (meters)                     GEOID18
 JV5705  LAPLACE CORR    -         -4.48  (seconds)                    DEFLEC18
 JV5705  HORZ ORDER      -  THIRD
 JV5705
 JV5705.The horizontal coordinates were established by classical geodetic methods
 JV5705.and adjusted by the National Geodetic Survey in January 1992.
 JV5705
 JV5705.The orthometric height was scaled from a topographic map.
 JV5705
 JV5705.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5705.GEOID18 height accuracy estimate available here.
 JV5705
 JV5705.Click photographs - Photos may exist for this station.
 JV5705
 JV5705.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5705
 JV5705. The following values were computed from the NAD 83(1991) position.
 JV5705
 JV5705;                    North         East     Units Scale Factor Converg.
 JV5705;SPC MD       -   175,609.488   435,972.881   MT  0.99997089   +0 15 41.6
 JV5705;SPC MD       -   576,145.46  1,430,354.36   sFT  0.99997089   +0 15 41.6
 JV5705;UTM  18      - 4,345,482.282   363,378.613   MT  0.99982982   -1 00 06.7
 JV5705
 JV5705!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5705!SPC MD       -   1.00000504  x   0.99997089  =   0.99997593
 JV5705!UTM  18      -   1.00000504  x   0.99982982  =   0.99983486
 JV5705
 JV5705:                Primary Azimuth Mark                     Grid Az
 JV5705:SPC MD       -  BROMO SELTZER BLDG FINIAL LT             323 36 13.0
 JV5705:UTM  18      -  BROMO SELTZER BLDG FINIAL LT             324 52 01.3
 JV5705
 JV5705_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6337845482(NAD 83)
 JV5705
 JV5705|---------------------------------------------------------------------|
 JV5705| PID    Reference Object                     Distance      Geod. Az  |
 JV5705|                                                           dddmmss.s |
 JV5705| CA9443 FURST RM                             25.036 METERS 18031     |
 JV5705| JV5669 BROOKLYN CHURCH SPIRE               APPROX. 2.3 KM 2402622.5 |
 JV5705| JV5560 GAS COMPANY STACK                   APPROX. 2.8 KM 3183357.2 |
 JV5705| JV5504 BROMO SELTZER BLDG FINIAL LT        APPROX. 5.5 KM 3235154.6 |
 JV5705| JV5538 OUR LADY OF CONCEPTION CHURCH       APPROX. 2.4 KM 3410041.6 |
 JV5705| JV5493 BALTIMORE YACHT CLUB FLAGSTAFF      APPROX. 1.5 KM 3503227.0 |
 JV5705| JV5495 BALTIMORE AND OHIO ELEV CUPOLA      APPROX. 2.4 KM 3591354.2 |
 JV5705|---------------------------------------------------------------------|
 JV5705
 JV5705                          SUPERSEDED SURVEY CONTROL
 JV5705
 JV5705  NAD 83(1986)-  39 14 52.46708(N)    076 34 59.75847(W) AD(       ) 3
 JV5705  NAD 27      -  39 14 52.08100(N)    076 35 00.88300(W) AD(       ) 3
 JV5705  USSD        -  39 14 52.44500(N)    076 35 00.71900(W) AD(       ) 3
 JV5705
 JV5705.Superseded values are not recommended for survey control.
 JV5705
 JV5705.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5705.See file dsdata.pdf to determine how the superseded data were derived.
 JV5705
 JV5705_MARKER: N = NAIL
 JV5705_SETTING: 0 = UNSPECIFIED SETTING
 JV5705
 JV5705  HISTORY     - Date     Condition        Report By
 JV5705  HISTORY     - 1915     MONUMENTED       CGS
 JV5705
 JV5705                          STATION DESCRIPTION
 JV5705
 JV5705'DESCRIBED BY COAST AND GEODETIC SURVEY 1915 (EWE)
 JV5705'ON THE SOUTHERN SHORE OF PATAPSCO RIVER, ON A LOW SANDY POINT OWNED
 JV5705'BY THE ARUNDEL SAND AND GRAVEL COMPANY.  TO THE EASTWARD OF THE
 JV5705'STATION IS A SMALL COVE AND LARGE PILE OF SAND AND OYSTER
 JV5705'SHELLS.  THE STATION MARK IS A PROPERTY-LINE MARK, AND CONSISTS OF
 JV5705'A CONCRETE MONUMENT FLUSH WITH GROUND WITH COPPER NAIL FOR CENTER
 JV5705'MARK.  A STANDARD BRONZE DISK REFERENCE MARK IN A CONCRETE
 JV5705'MONUMENT WAS SET IN A SMALL SAND DUNE
 JV5705'JUST ABOVE EXTREME HIGH-WATER MARK.  IT IS 25.036 METERS (82.14
 JV5705'FEET) FROM THE STATION S 0 DEG 31 MIN W.  THE STATION
 JV5705'WAS NOT RECOVERED IN 1924, BUT THE REFERENCE MARK WAS IN GOOD
 JV5705'CONDITION, ON THE BOUNDARY OF THE MARYLAND DRYDOCK COMPANY
 JV5705'NEAR THE SHORE END OF THE PILE BULKHEAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2395 ***********************************************************************
 HU2395  DESIGNATION -  FURY
 HU2395  PID         -  HU2395
 HU2395  STATE/COUNTY-  MD/WICOMICO
 HU2395  COUNTRY     -  US
 HU2395  USGS QUAD   -  NINEPIN BRANCH (2016)
 HU2395
 HU2395                         *CURRENT SURVEY CONTROL
 HU2395  ______________________________________________________________________
 HU2395* NAD 83(1986) POSITION- 38 19 25.     (N) 075 22 24.     (W)   SCALED
 HU2395* NAVD 88 ORTHO HEIGHT -    10.381 (meters)       34.06  (feet) ADJUSTED
 HU2395  ______________________________________________________________________
 HU2395  GEOID HEIGHT    -        -35.997 (meters)                     GEOID18
 HU2395  DYNAMIC HEIGHT  -         10.374 (meters)       34.04  (feet) COMP
 HU2395  MODELED GRAVITY -    980,001.6   (mgal)                       NAVD 88
 HU2395
 HU2395  VERT ORDER      -  SECOND    CLASS I
 HU2395
 HU2395.The horizontal coordinates were scaled from a map and have
 HU2395.an estimated accuracy of +/- 6 seconds.
 HU2395
 HU2395.The orthometric height was determined by differential leveling and
 HU2395.adjusted by the NATIONAL GEODETIC SURVEY
 HU2395.in June 1991.
 HU2395
 HU2395.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2395.GEOID18 height accuracy estimate available here.
 HU2395
 HU2395.Click photographs - Photos may exist for this station.
 HU2395
 HU2395.The dynamic height is computed by dividing the NAVD 88
 HU2395.geopotential number by the normal gravity value computed on the
 HU2395.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2395.degrees latitude (g = 980.6199 gals.).
 HU2395
 HU2395.The modeled gravity was interpolated from observed gravity values.
 HU2395
 HU2395;                    North         East    Units  Estimated Accuracy
 HU2395;SPC MD       -    74,190.      542,240.      MT  (+/- 180 meters Scaled)
 HU2395
 HU2395_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH673417(NAD 83)
 HU2395
 HU2395                          SUPERSEDED SURVEY CONTROL
 HU2395
 HU2395  NGVD 29 (06/12/91)   10.629  (m)           34.87   (f) ADJUSTED    2 1
 HU2395
 HU2395.Superseded values are not recommended for survey control.
 HU2395
 HU2395.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2395.See file dsdata.pdf to determine how the superseded data were derived.
 HU2395
 HU2395_MARKER: DD = SURVEY DISK
 HU2395_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU2395_SP_SET: CURB
 HU2395_STAMPING: FURY 1961
 HU2395_MARK LOGO: MDBCSM
 HU2395_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2395_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2395_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2395+SATELLITE: SATELLITE OBSERVATIONS - March 08, 1990
 HU2395
 HU2395  HISTORY     - Date     Condition        Report By
 HU2395  HISTORY     - 1961     MONUMENTED       MDBCSM
 HU2395  HISTORY     - 19900308 GOOD             NGS
 HU2395
 HU2395                          STATION DESCRIPTION
 HU2395
 HU2395'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2395'0.6 KM (0.37 MI) SOUTHERLY ALONG STATE HIGHWAY 354 (WILLARDS WHITON
 HU2395'ROAD) FROM THE JUNCTION OF STATE HIGHWAY 350 (MOUNT HERMON ROAD) IN
 HU2395'POWELLVILLE, IN TOP OF THE SOUTH CURB OF A CONCRETE TRIANGLE MEDIAN
 HU2395'AT THE INTERSECTION OF STATE HIGHWAYS 354 AND 374, 16.9 M (55.45 FT)
 HU2395'EAST OF THE CENTERLINE OF HIGHWAY 354, 7.4 M (24.28 FT) SOUTHWEST OF
 HU2395'THE CENTER OF THE SOUTHBOUND LANE OF HIGHWAY 374, 4.3 M (14.11 FT)
 HU2395'NORTH OF THE CENTERLINE OF A ROAD CONNECTING THE HIGHWAYS, AND 0.1 M
 HU2395'(0.33 FT) ABOVE THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3600 ***********************************************************************
 JU3600  DESIGNATION -  G
 JU3600  PID         -  JU3600
 JU3600  STATE/COUNTY-  MD/CECIL
 JU3600  COUNTRY     -  US
 JU3600  USGS QUAD   -  EARLEVILLE (2016)
 JU3600
 JU3600                         *CURRENT SURVEY CONTROL
 JU3600  ______________________________________________________________________
 JU3600* NAD 83(1991) POSITION- 39 29 25.97573(N) 075 56 57.76438(W)   ADJUSTED
 JU3600* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JU3600  ______________________________________________________________________
 JU3600  GEOID HEIGHT    -        -33.325 (meters)                     GEOID18
 JU3600  LAPLACE CORR    -         -0.98  (seconds)                    DEFLEC18
 JU3600  HORZ ORDER      -  THIRD
 JU3600
 JU3600.The horizontal coordinates were established by classical geodetic methods
 JU3600.and adjusted by the National Geodetic Survey in January 1992.
 JU3600
 JU3600.The orthometric height was scaled from a topographic map.
 JU3600
 JU3600.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3600.GEOID18 height accuracy estimate available here.
 JU3600
 JU3600.Click photographs - Photos may exist for this station.
 JU3600
 JU3600.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3600
 JU3600. The following values were computed from the NAD 83(1991) position.
 JU3600
 JU3600;                    North         East     Units Scale Factor Converg.
 JU3600;SPC MD       -   202,985.664   490,378.411   MT  1.00000734   +0 39 33.9
 JU3600;SPC MD       -   665,962.13  1,608,849.84   sFT  1.00000734   +0 39 33.9
 JU3600;UTM  18      - 4,371,645.767   418,361.554   MT  0.99968206   -0 36 13.7
 JU3600
 JU3600!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3600!SPC MD       -   1.00000385  x   1.00000734  =   1.00001119
 JU3600!UTM  18      -   1.00000385  x   0.99968206  =   0.99968591
 JU3600
 JU3600:                Primary Azimuth Mark                     Grid Az
 JU3600:SPC MD       -  F                                        054 54 18.1
 JU3600:UTM  18      -  F                                        056 10 05.7
 JU3600
 JU3600_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1836171645(NAD 83)
 JU3600
 JU3600|---------------------------------------------------------------------|
 JU3600| PID    Reference Object                     Distance      Geod. Az  |
 JU3600|                                                           dddmmss.s |
 JU3600| JU3583 F                                   APPROX. 1.9 KM 0553352.0 |
 JU3600| CB1986 G RM 1                               10.720 METERS 27703     |
 JU3600| CB1987 G RM 2                               11.204 METERS 35336     |
 JU3600|---------------------------------------------------------------------|
 JU3600
 JU3600                          SUPERSEDED SURVEY CONTROL
 JU3600
 JU3600  NAD 83(1986)-  39 29 25.96809(N)    075 56 57.77113(W) AD(       ) 3
 JU3600  NAD 27      -  39 29 25.57000(N)    075 56 58.98200(W) AD(       ) 3
 JU3600
 JU3600.Superseded values are not recommended for survey control.
 JU3600
 JU3600.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3600.See file dsdata.pdf to determine how the superseded data were derived.
 JU3600
 JU3600_MARKER: DD = SURVEY DISK
 JU3600_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3600_STAMPING: G
 JU3600_MARK LOGO: USACE
 JU3600_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3600+STABILITY: SURFACE MOTION
 JU3600
 JU3600  HISTORY     - Date     Condition        Report By
 JU3600  HISTORY     - 1937     MONUMENTED       USACE
 JU3600
 JU3600                          STATION DESCRIPTION
 JU3600
 JU3600'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3600'LOCATED ON THE N SIDE OF ELK RIVER ON A POINT 0.8 MILE NE OF
 JU3600'TIMBER NECK AND 1.0 MILE NNW OF FORDS LANDING.  IT IS 6.2
 JU3600'METERS INSHORE AND NEAR A ROUNDING POINT IN THE TREE LINE
 JU3600'BACK OF THE STATION.  THE STATION IS MARKED BY A STANDARD
 JU3600'U.S.E.D. DISK, STAMPED G, SET ATOP A 6-INCH SQUARE CONCRETE
 JU3600'POST AND PROJECTS 6 INCHES ABOVE GROUND.  THE REFERENCE MARKS
 JU3600'ARE STANDARD U.S.E.D. DISKS SET ATOP CONCRETE POSTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0242 ***********************************************************************
 HU0242  DESIGNATION -  G 10
 HU0242  PID         -  HU0242
 HU0242  STATE/COUNTY-  MD/WORCESTER
 HU0242  COUNTRY     -  US
 HU0242  USGS QUAD   -  BERLIN (2016)
 HU0242
 HU0242                         *CURRENT SURVEY CONTROL
 HU0242  ______________________________________________________________________
 HU0242* NAD 83(1986) POSITION- 38 19 06.     (N) 075 13 44.     (W)   SCALED
 HU0242* NAVD 88 ORTHO HEIGHT -    11.294 (meters)       37.05  (feet) ADJUSTED
 HU0242  ______________________________________________________________________
 HU0242  GEOID HEIGHT    -        -36.038 (meters)                     GEOID18
 HU0242  DYNAMIC HEIGHT  -         11.287 (meters)       37.03  (feet) COMP
 HU0242  MODELED GRAVITY -    980,004.0   (mgal)                       NAVD 88
 HU0242
 HU0242  VERT ORDER      -  SECOND    CLASS 0
 HU0242
 HU0242.The horizontal coordinates were scaled from a map and have
 HU0242.an estimated accuracy of +/- 6 seconds.
 HU0242
 HU0242.The orthometric height was determined by differential leveling and
 HU0242.adjusted by the NATIONAL GEODETIC SURVEY
 HU0242.in June 1991.
 HU0242
 HU0242.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0242.GEOID18 height accuracy estimate available here.
 HU0242
 HU0242.Click photographs - Photos may exist for this station.
 HU0242
 HU0242.The dynamic height is computed by dividing the NAVD 88
 HU0242.geopotential number by the normal gravity value computed on the
 HU0242.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0242.degrees latitude (g = 980.6199 gals.).
 HU0242
 HU0242.The modeled gravity was interpolated from observed gravity values.
 HU0242
 HU0242;                    North         East    Units  Estimated Accuracy
 HU0242;SPC MD       -    73,840.      554,880.      MT  (+/- 180 meters Scaled)
 HU0242
 HU0242_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH799411(NAD 83)
 HU0242
 HU0242                          SUPERSEDED SURVEY CONTROL
 HU0242
 HU0242  NGVD 29 (11/26/84)   11.537  (m)           37.85   (f) ADJUSTED    2 0
 HU0242
 HU0242.Superseded values are not recommended for survey control.
 HU0242
 HU0242.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0242.See file dsdata.pdf to determine how the superseded data were derived.
 HU0242
 HU0242_MARKER: DB = BENCH MARK DISK
 HU0242_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0242_STAMPING: G 10 1935
 HU0242_MARK LOGO: CGS
 HU0242_PROJECTION: FLUSH
 HU0242_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0242+STABILITY: SURFACE MOTION
 HU0242
 HU0242  HISTORY     - Date     Condition        Report By
 HU0242  HISTORY     - 1935     MONUMENTED       CGS
 HU0242  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU0242
 HU0242                          STATION DESCRIPTION
 HU0242
 HU0242'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0242'0.9 MI S FROM BERLIN.
 HU0242'0.9 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION AT
 HU0242'BERLIN (QUEPONCO RAILROAD STATION), WORCESTER COUNTY, AT A DIRT-ROAD
 HU0242'CROSSING, 38 FEET NORTHEAST OF THE CENTER OF THE INTERSECTION OF
 HU0242'THE DIRT-ROAD AND THE RAILROAD TRACK, 36.5 FEET NORTH OF THE
 HU0242'NORTHWEST CORNER OF A STORAGE HOUSE OF THE PENINSULAR CANNING CO.,
 HU0242'15 FEET NORTH OF THE CENTERLINE OF THE DIRT-ROAD, 3 FEET EAST OF
 HU0242'THE EASTERN SHORE PUBLIC SERVICE POLE NO. B.S. 48, AT THE EAST BASE
 HU0242'OF A RAILROAD CROSSING SIGN AND ON THE EDGE OF A 3-FOOT DRAINAGE
 HU0242'DITCH.  A STANDARD DISK, STAMPED G 10 1935 AND SET IN THE TOP OF A
 HU0242'CONCRETE POST FLUSH WITH THE GROUND.  NOTE-- RECOVERED IN GOOD
 HU0242'CONDITION IN MAY 1942.  AT THAT TIME IT WAS NOTED, THAT THE EAST
 HU0242'SIDE OF THE MARK WAS EXPOSED BY THE DITCH TO A DEPTH OF 2 FEET
 HU0242'ENDANGERING ITS FUTURE CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0978 ***********************************************************************
 HV0978  DESIGNATION -  G 100
 HV0978  PID         -  HV0978
 HV0978  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0978  COUNTRY     -  US
 HV0978  USGS QUAD   -  BENEDICT (2016)
 HV0978
 HV0978                         *CURRENT SURVEY CONTROL
 HV0978  ______________________________________________________________________
 HV0978* NAD 83(1986) POSITION- 38 34 14.     (N) 076 42 31.     (W)   SCALED
 HV0978* NAVD 88 ORTHO HEIGHT -    38.458 (meters)      126.17  (feet) ADJUSTED
 HV0978  ______________________________________________________________________
 HV0978  GEOID HEIGHT    -        -33.526 (meters)                     GEOID18
 HV0978  DYNAMIC HEIGHT  -         38.435 (meters)      126.10  (feet) COMP
 HV0978  MODELED GRAVITY -    980,033.1   (mgal)                       NAVD 88
 HV0978
 HV0978  VERT ORDER      -  FIRST     CLASS II
 HV0978
 HV0978.The horizontal coordinates were scaled from a map and have
 HV0978.an estimated accuracy of +/- 6 seconds.
 HV0978
 HV0978.The orthometric height was determined by differential leveling and
 HV0978.adjusted by the NATIONAL GEODETIC SURVEY
 HV0978.in June 1991.
 HV0978
 HV0978.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0978.GEOID18 height accuracy estimate available here.
 HV0978
 HV0978.Click photographs - Photos may exist for this station.
 HV0978
 HV0978.The dynamic height is computed by dividing the NAVD 88
 HV0978.geopotential number by the normal gravity value computed on the
 HV0978.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0978.degrees latitude (g = 980.6199 gals.).
 HV0978
 HV0978.The modeled gravity was interpolated from observed gravity values.
 HV0978
 HV0978;                    North         East    Units  Estimated Accuracy
 HV0978;SPC MD       -   100,380.      425,390.      MT  (+/- 180 meters Scaled)
 HV0978
 HV0978_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH511705(NAD 83)
 HV0978
 HV0978                          SUPERSEDED SURVEY CONTROL
 HV0978
 HV0978  NGVD 29 (11/26/84)   38.721  (m)          127.04   (f) ADJUSTED    1 2
 HV0978
 HV0978.Superseded values are not recommended for survey control.
 HV0978
 HV0978.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0978.See file dsdata.pdf to determine how the superseded data were derived.
 HV0978
 HV0978_MARKER: DB = BENCH MARK DISK
 HV0978_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0978_STAMPING: G 100 1961
 HV0978_MARK LOGO: CGS
 HV0978_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0978+STABILITY: SURFACE MOTION
 HV0978
 HV0978  HISTORY     - Date     Condition        Report By
 HV0978  HISTORY     - 1961     MONUMENTED       CGS
 HV0978
 HV0978                          STATION DESCRIPTION
 HV0978
 HV0978'DESCRIBED BY COAST AND GEODETIC SURVEY 1961
 HV0978'0.9 MI SE FROM AQUASCO.
 HV0978'ABOUT 0.9 MILE SOUTHEAST ALONG THE EAGLE HARBOUR ROAD FROM THE
 HV0978'JUNCTION OF STATE HIGHWAY 381 AT AQUASCO, AT THE FOOT OF A SMALL
 HV0978'HILL, ACROSS THE ROAD AND 82 FEET SOUTHEAST OF THE JUNCTION OF A
 HV0978'DRIVE TO A SMALL WHITE HOUSE, 31 FEET SOUTHWEST OF THE CENTERLINE
 HV0978'OF THE ROAD, 2.9 FEET NORTHEAST OF A METAL WITNESS MARKER, AND
 HV0978'IN THE TOP OF A 1 FOOT ROUND CONCRETE POST PROJECTING 6 INCHES
 HV0978'ABOUT GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1875 ***********************************************************************
 JU1875  DESIGNATION -  G 103
 JU1875  PID         -  JU1875
 JU1875  STATE/COUNTY-  MD/CECIL
 JU1875  COUNTRY     -  US
 JU1875  USGS QUAD   -  NORTH EAST (2016)
 JU1875
 JU1875                         *CURRENT SURVEY CONTROL
 JU1875  ______________________________________________________________________
 JU1875* NAD 83(1986) POSITION- 39 35 51.2    (N) 075 57 46.3    (W)   HD_HELD2
 JU1875* NAVD 88 ORTHO HEIGHT -    17.827 (meters)       58.49  (feet) ADJUSTED
 JU1875  ______________________________________________________________________
 JU1875  GEOID HEIGHT    -        -33.165 (meters)                     GEOID18
 JU1875  DYNAMIC HEIGHT  -         17.818 (meters)       58.46  (feet) COMP
 JU1875  MODELED GRAVITY -    980,130.0   (mgal)                       NAVD 88
 JU1875
 JU1875  VERT ORDER      -  SECOND    CLASS 0
 JU1875
 JU1875.The horizontal coordinates were established by autonomous hand held GPS
 JU1875.observations and have an estimated accuracy of +/- 10 meters.
 JU1875
 JU1875.The orthometric height was determined by differential leveling and
 JU1875.adjusted by the NATIONAL GEODETIC SURVEY
 JU1875.in June 1991.
 JU1875
 JU1875.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1875.GEOID18 height accuracy estimate available here.
 JU1875
 JU1875.Click photographs - Photos may exist for this station.
 JU1875
 JU1875.The dynamic height is computed by dividing the NAVD 88
 JU1875.geopotential number by the normal gravity value computed on the
 JU1875.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1875.degrees latitude (g = 980.6199 gals.).
 JU1875
 JU1875.The modeled gravity was interpolated from observed gravity values.
 JU1875
 JU1875;                    North         East    Units  Estimated Accuracy
 JU1875;SPC MD       -   214,852.      489,084.      MT  (+/- 10 meters HH2 GPS)
 JU1875
 JU1875_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1732983534(NAD 83)
 JU1875
 JU1875                          SUPERSEDED SURVEY CONTROL
 JU1875
 JU1875  NGVD 29 (11/26/84)   18.056  (m)           59.24   (f) ADJUSTED    2 0
 JU1875
 JU1875.Superseded values are not recommended for survey control.
 JU1875
 JU1875.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1875.See file dsdata.pdf to determine how the superseded data were derived.
 JU1875
 JU1875_MARKER: DB = BENCH MARK DISK
 JU1875_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JU1875_SP_SET: GAS PUMP BASE
 JU1875_STAMPING: G 103 1961
 JU1875_MARK LOGO: CGS
 JU1875_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU1875_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1875+SATELLITE: SATELLITE OBSERVATIONS - March 25, 2004
 JU1875
 JU1875  HISTORY     - Date     Condition        Report By
 JU1875  HISTORY     - 1961     MONUMENTED       CGS
 JU1875  HISTORY     - 1964     GOOD             CGS
 JU1875  HISTORY     - 1982     GOOD             LOCSUR
 JU1875  HISTORY     - 19910216 GOOD             USPSQD
 JU1875  HISTORY     - 20020719 GOOD             INDIV
 JU1875  HISTORY     - 20040325 GOOD             USPSQD
 JU1875
 JU1875                          STATION DESCRIPTION
 JU1875
 JU1875'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1875'1 MI W FROM NORTH EAST.
 JU1875'1.05 MILE WEST ALONG STATE HIGHWAY 7 FROM ITS JUNCTION WITH STATE
 JU1875'HIGHWAY 272 IN NORTH EAST, 9 FEET EAST OF POWER LINE POLE NO.
 JU1875'12292 AND 27 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY.  A
 JU1875'STANDARD DISK SET IN A DRILL HOLE IN THE CENTER OF THE CONCRETE BASE
 JU1875'OF ABANDONED GASOLINE PUMP.
 JU1875
 JU1875                          STATION RECOVERY (1982)
 JU1875
 JU1875'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
 JU1875'RECOVERED IN GOOD CONDITION.
 JU1875
 JU1875                          STATION RECOVERY (1991)
 JU1875
 JU1875'RECOVERY NOTE BY US POWER SQUADRON 1991 (ECH)
 JU1875'RECOVERED IN GOOD CONDITION.
 JU1875
 JU1875                          STATION RECOVERY (2002)
 JU1875
 JU1875'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (TGG)
 JU1875'DISK WAS RECOVERED IN GOOD CONDITION. CONC. BASE IS NOW APPROXIMATELY
 JU1875'1.5 FEET X 1.5 FEET, 4 INCHES ABOVE GROUND LEVEL, AND 27 FEET NORTH OF
 JU1875'CENTERLINE OF ROAD. DISK IS PROTECTED BY A PIECE OF PIPE 8 INCHES IN
 JU1875'DIA. AND 8 INCHES HIGH. PIPE HAS A SQUARE BASE AND IS REMOVABLE. POLE
 JU1875'12292 HAS BEEN RELOCATED AND IS NOW APPROXIMATELY 13.3 FEET WEST OF
 JU1875'THE DISK.
 JU1875
 JU1875                          STATION RECOVERY (2004)
 JU1875
 JU1875'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLG)
 JU1875'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0270 ***********************************************************************
 HU0270  DESIGNATION -  G 104
 HU0270  PID         -  HU0270
 HU0270  STATE/COUNTY-  MD/WORCESTER
 HU0270  COUNTRY     -  US
 HU0270  USGS QUAD   -  OCEAN CITY (2016)
 HU0270
 HU0270                         *CURRENT SURVEY CONTROL
 HU0270  ______________________________________________________________________
 HU0270* NAD 83(1986) POSITION- 38 20 02.63   (N) 075 05 48.49   (W)   HD_HELD1
 HU0270* NAVD 88 ORTHO HEIGHT -     4.226 (meters)       13.86  (feet) ADJUSTED
 HU0270  ______________________________________________________________________
 HU0270  GEOID HEIGHT    -        -36.055 (meters)                     GEOID18
 HU0270  DYNAMIC HEIGHT  -          4.224 (meters)       13.86  (feet) COMP
 HU0270  MODELED GRAVITY -    980,008.2   (mgal)                       NAVD 88
 HU0270
 HU0270  VERT ORDER      -  SECOND    CLASS 0
 HU0270
 HU0270.The horizontal coordinates were determined by differentially corrected
 HU0270.hand held GPS observations or other comparable positioning techniques
 HU0270.and have an estimated accuracy of +/- 3 meters.
 HU0270
 HU0270.The orthometric height was determined by differential leveling and
 HU0270.adjusted by the NATIONAL GEODETIC SURVEY
 HU0270.in June 1991.
 HU0270
 HU0270.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0270.GEOID18 height accuracy estimate available here.
 HU0270
 HU0270.Click photographs - Photos may exist for this station.
 HU0270
 HU0270.The dynamic height is computed by dividing the NAVD 88
 HU0270.geopotential number by the normal gravity value computed on the
 HU0270.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0270.degrees latitude (g = 980.6199 gals.).
 HU0270
 HU0270.The modeled gravity was interpolated from observed gravity values.
 HU0270
 HU0270;                    North         East    Units  Estimated Accuracy
 HU0270;SPC MD       -    75,818.5     566,388.3     MT  (+/- 3 meters HH1 GPS) 
 HU0270
 HU0270_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9153942885(NAD 83)
 HU0270
 HU0270                          SUPERSEDED SURVEY CONTROL
 HU0270
 HU0270  NGVD 29 (02/25/92)    4.473  (m)           14.68   (f) ADJUSTED    2 0
 HU0270  NGVD 29 (??/??/87)    4.473  (m)           14.68   (f) SUPERSEDED  2 0
 HU0270
 HU0270.Superseded values are not recommended for survey control.
 HU0270
 HU0270.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0270.See file dsdata.pdf to determine how the superseded data were derived.
 HU0270
 HU0270_MARKER: DB = BENCH MARK DISK
 HU0270_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HU0270_SP_SET: BRIDGE ABUTMENT
 HU0270_STAMPING: G 104 1962
 HU0270_MARK LOGO: CGS
 HU0270_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0270_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU0270_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0270+SATELLITE: SATELLITE OBSERVATIONS - February 20, 2016
 HU0270
 HU0270  HISTORY     - Date     Condition        Report By
 HU0270  HISTORY     - 1962     MONUMENTED       CGS
 HU0270  HISTORY     - 1984     GOOD             NGS
 HU0270  HISTORY     - 1988     GOOD             USPSQD
 HU0270  HISTORY     - 19910514 GOOD             MDSHA
 HU0270  HISTORY     - 20040409 GOOD             MDSHA
 HU0270  HISTORY     - 20051203 GOOD             USPSQD
 HU0270  HISTORY     - 20070916 GOOD             GEOCAC
 HU0270  HISTORY     - 20090209 GOOD             OPUS
 HU0270  HISTORY     - 20101003 GOOD             NGS
 HU0270  HISTORY     - 20110112 GOOD             INDIV
 HU0270  HISTORY     - 20160220 GOOD             ARCSHE
 HU0270
 HU0270                          STATION DESCRIPTION
 HU0270
 HU0270'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0270'AT OCEAN CITY.
 HU0270'SET IN A DRILL HOLE IN THE NORTHEAST END OF THE ABUTMENT AT THE
 HU0270'NORTHWEST END OF U.S. HIGHWAY 50 BRIDGE OVER SINEPUXENT BAY.  9
 HU0270'FEET NORTHEAST OF THE NORTHEAST CURB OF HIGHWAY 50 AND 1 FOOT
 HU0270'ABOVE THE LEVEL OF THE HIGHWAY.
 HU0270
 HU0270                          STATION RECOVERY (1984)
 HU0270
 HU0270'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HU0270'RECOVERED IN GOOD CONDITION.
 HU0270
 HU0270                          STATION RECOVERY (1988)
 HU0270
 HU0270'RECOVERY NOTE BY US POWER SQUADRON 1988 (RBD)
 HU0270'RECOVERED IN GOOD CONDITION.
 HU0270
 HU0270                          STATION RECOVERY (1991)
 HU0270
 HU0270'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU0270'THE MARK IS LOCATED ABOUT 6.65 MI (10.70 KM) EAST OF BERLIN, 0.53 MI
 HU0270'(0.85 KM) WEST OF OCEAN CITY AND ON ROAD RIGHT-OF-WAY.  TO REACH FROM
 HU0270'THE INTERSECTION OF U.S. 50 AND 113, GO EAST ON U.S. HIGHWAY 50 FOR
 HU0270'6.6 MI (10.6 KM) TO THE ASSAWOMAN BAY BRIDGE AND THE MARK ON THE
 HU0270'LEFT.  IT IS 32.0 FT (9.8 M) NORTHEAST OF THE CENTER LINE OF U.S.
 HU0270'HIGHWAY 50, 9.8 FT (3.0 M) NORTHWEST OF THE WEST END OF A CHAIN LINK
 HU0270'FENCE, 2.7 FT (0.8 M) NORTHEAST OF A LIGHT POLE, AND SET IN A DRILL
 HU0270'HOLE IN THE NORTHWEST ABUTMENT OF THE BRIDGE.
 HU0270
 HU0270                          STATION RECOVERY (2004)
 HU0270
 HU0270'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (MRA)
 HU0270'RECOVERED IN GOOD CONDITION.
 HU0270
 HU0270                          STATION RECOVERY (2005)
 HU0270
 HU0270'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU0270'RECOVERED IN GOOD CONDITION.
 HU0270
 HU0270                          STATION RECOVERY (2007)
 HU0270
 HU0270'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 HU0270'RECOVERED IN GOOD CONDITION.
 HU0270
 HU0270                          STATION RECOVERY (2009)
 HU0270
 HU0270'RECOVERY NOTE BY OPUS SHARED SOLUTIONS 2009 (OPS)
 HU0270'THE MARK IS FOUND ABOUT 6.65 MI (10.70 KM) EAST OF BERLIN AND 0.53 MI
 HU0270'(0.85 KM) WEST OF OCEAN CITY.
 HU0270'
 HU0270'TO REACH FROM THE INTERSECTION OF U.S. 50 AND 113, GO EAST ON U.S.
 HU0270'HIGHWAY 50 FOR 6.6 MI (10.6 KM) TO THE BRIDGE OVER ISLE OF WIGHT BAY
 HU0270'AND THE MARK ON THE LEFT.
 HU0270'
 HU0270'THE MARK IS LOCATED 32.0 FT (9.8 M) NORTH OF THE CENTER LINE OF U.S.
 HU0270'HIGHWAY 50, 9.8 FT (3.0 M) NORTHWEST OF THE WEST END OF A CHAIN LINK
 HU0270'FENCE, 2.7 FT (0.8 M) NORTHEAST OF A LIGHT POLE, AND SET IN A DRILL
 HU0270'HOLE IN THE WEST ABUTMENT OF THE BRIDGE.
 HU0270
 HU0270                          STATION RECOVERY (2010)
 HU0270
 HU0270'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HU0270'RECOVERED IN GOOD CONDITION.
 HU0270
 HU0270                          STATION RECOVERY (2011)
 HU0270
 HU0270'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (RNH)
 HU0270'THE MARKER IS TO BE FOUND IN GOOD CONDITION AND USEABLE FOR GPS.
 HU0270
 HU0270                          STATION RECOVERY (2016)
 HU0270
 HU0270'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2016 (MRA)
 HU0270'A TALL CHAINLINK FENCE NEARBY CAUSES MULTIPATH PROBLEMS WHEN
 HU0270'ATTEMPTING TO GPS THIS MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0493 ***********************************************************************
 HU0493  DESIGNATION -  G 106
 HU0493  PID         -  HU0493
 HU0493  STATE/COUNTY-  MD/SOMERSET
 HU0493  COUNTRY     -  US
 HU0493  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0493
 HU0493                         *CURRENT SURVEY CONTROL
 HU0493  ______________________________________________________________________
 HU0493* NAD 83(2011) POSITION- 38 08 15.67571(N) 075 39 35.49509(W)   ADJUSTED
 HU0493* NAD 83(2011) ELLIP HT-   -30.645 (meters)        (01/22/24)   ADJUSTED
 HU0493* NAD 83(2011) EPOCH   -  2010.00
 HU0493* NAVD 88 ORTHO HEIGHT -     5.485 (meters)       18.00  (feet) ADJUSTED
 HU0493  ______________________________________________________________________
 HU0493  GEOID HEIGHT    -        -36.116 (meters)                     GEOID18
 HU0493  NAD 83(2011) X  -  1,244,081.152 (meters)                     COMP
 HU0493  NAD 83(2011) Y  - -4,866,477.791 (meters)                     COMP
 HU0493  NAD 83(2011) Z  -  3,917,456.917 (meters)                     COMP
 HU0493  LAPLACE CORR    -         -1.88  (seconds)                    DEFLEC18
 HU0493  DYNAMIC HEIGHT  -          5.482 (meters)       17.99  (feet) COMP
 HU0493  MODELED GRAVITY -    979,981.1   (mgal)                       NAVD 88
 HU0493
 HU0493  VERT ORDER      -  FIRST     CLASS I
 HU0493
 HU0493  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0493  Standards:
 HU0493         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0493            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0493  -------------------------------------------------------------------
 HU0493  NETWORK    0.46   1.33           0.20   0.17   0.68      0.06070096
 HU0493  -------------------------------------------------------------------
 HU0493  Click here for local accuracies and other accuracy information.
 HU0493
 HU0493.The horizontal coordinates were established by GPS observations
 HU0493.and adjusted by the MD DOT HIGHWAY ADMIN in January 2024.
 HU0493
 HU0493.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0493.been affixed to the stable North American tectonic plate. See 
 HU0493.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0493
 HU0493.The horizontal coordinates are valid at the epoch date displayed above
 HU0493.which is a decimal equivalence of Year/Month/Day.
 HU0493
 HU0493.The orthometric height was determined by differential leveling and
 HU0493.adjusted by the NATIONAL GEODETIC SURVEY
 HU0493.in June 1991.
 HU0493
 HU0493.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0493.GEOID18 height accuracy estimate available here.
 HU0493
 HU0493.Click photographs - Photos may exist for this station.
 HU0493
 HU0493.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0493
 HU0493.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0493
 HU0493.The ellipsoidal height was determined by GPS observations
 HU0493.and is referenced to NAD 83.
 HU0493
 HU0493.The dynamic height is computed by dividing the NAVD 88
 HU0493.geopotential number by the normal gravity value computed on the
 HU0493.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0493.degrees latitude (g = 980.6199 gals.).
 HU0493
 HU0493.The modeled gravity was interpolated from observed gravity values.
 HU0493
 HU0493. The following values were computed from the NAD 83(2011) position.
 HU0493
 HU0493;                    North         East     Units Scale Factor Converg.
 HU0493;SPC MD       -    53,148.196   517,486.962   MT  1.00003220   +0 50 28.0
 HU0493;SPC MD       -   174,370.37  1,697,788.47   sFT  1.00003220   +0 50 28.0
 HU0493;UTM  18      - 4,221,297.574   442,174.257   MT  0.99964118   -0 24 27.0
 HU0493
 HU0493!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0493!SPC MD       -   1.00000481  x   1.00003220  =   1.00003701
 HU0493!UTM  18      -   1.00000481  x   0.99964118  =   0.99964599
 HU0493
 HU0493_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4217421297(NAD 83)
 HU0493
 HU0493                          SUPERSEDED SURVEY CONTROL
 HU0493
 HU0493  NGVD 29 (11/26/84)    5.738  (m)           18.83   (f) ADJUSTED    1 1
 HU0493
 HU0493.Superseded values are not recommended for survey control.
 HU0493
 HU0493.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0493.See file dsdata.pdf to determine how the superseded data were derived.
 HU0493
 HU0493_MARKER: DB = BENCH MARK DISK
 HU0493_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0493_STAMPING: G 106 1963
 HU0493_MARK LOGO: CGS
 HU0493_PROJECTION: PROJECTING 5 CENTIMETERS
 HU0493_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0493+STABILITY: SURFACE MOTION
 HU0493_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0493+SATELLITE: SATELLITE OBSERVATIONS - January 22, 2020
 HU0493
 HU0493  HISTORY     - Date     Condition        Report By
 HU0493  HISTORY     - 1963     MONUMENTED       CGS
 HU0493  HISTORY     - 1972     GOOD             NGS
 HU0493  HISTORY     - 20200122 GOOD             MDSHA
 HU0493
 HU0493                          STATION DESCRIPTION
 HU0493
 HU0493'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0493'6.6 MI NW FROM POCOMOKE CITY.
 HU0493'ABOUT 6.65 MILES NORTHWEST ALONG THE PENN CENTRAL RAILROAD FROM
 HU0493'THE CROSSING OF CLARKE AVENUE AT POCOMOKE CITY, NEAR THE CROSSING
 HU0493'OF A SAND ROAD, 335 FEET NORTHWEST OF THE CENTER OF THE CROSSING
 HU0493'OF THE SAND ROAD, 111 1/2 FEET SOUTHEAST OF AND ACROSS THE TRACK
 HU0493'FROM MILEPOST 24, 38.5 FEET NORTHEAST OF THE NORTHEAST RAIL, 1 1/2
 HU0493'FEET NORTHWEST OF A METAL WITNESS POST, 1 FOOT BELOW THE LEVEL OF
 HU0493'THE TRACK AND SET IN THE TOP OF A CONCRETE POST PROJECTING 2
 HU0493'INCHES ABOVE THE LEVEL OF THE GROUND.  NOTE-- MARK MAY BE REACHED
 HU0493'BY GOING 2.6 MILES SOUTH ALONG SOMERSET AVENUE AND U.S. HIGHWAY 13
 HU0493'FROM THE JUNCTION OF STATE HIGHWAY 363 AT PRINCESS ANNE, THENCE
 HU0493'2.55 MILES SOUTHEAST ALONG THE PENN CENTRAL RAILROAD.
 HU0493
 HU0493                          STATION RECOVERY (2020)
 HU0493
 HU0493'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (WAC)
 HU0493'OVERHEAD POWER TRANSMISSION LINES ARE SITUATED NORTH OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0412 ***********************************************************************
 HU0412  DESIGNATION -  G 107
 HU0412  PID         -  HU0412
 HU0412  STATE/COUNTY-  MD/WICOMICO
 HU0412  COUNTRY     -  US
 HU0412  USGS QUAD   -  DELMAR (2016)
 HU0412
 HU0412                         *CURRENT SURVEY CONTROL
 HU0412  ______________________________________________________________________
 HU0412* NAD 83(1986) POSITION- 38 24 50.5    (N) 075 34 55.7    (W)   HD_HELD2
 HU0412* NAVD 88 ORTHO HEIGHT -    13.065 (meters)       42.86  (feet) ADJUSTED
 HU0412  ______________________________________________________________________
 HU0412  GEOID HEIGHT    -        -35.767 (meters)                     GEOID18
 HU0412  DYNAMIC HEIGHT  -         13.056 (meters)       42.83  (feet) COMP
 HU0412  MODELED GRAVITY -    980,009.9   (mgal)                       NAVD 88
 HU0412
 HU0412  VERT ORDER      -  FIRST     CLASS I
 HU0412
 HU0412.The horizontal coordinates were established by autonomous hand held GPS
 HU0412.observations and have an estimated accuracy of +/- 10 meters.
 HU0412
 HU0412.The orthometric height was determined by differential leveling and
 HU0412.adjusted by the NATIONAL GEODETIC SURVEY
 HU0412.in June 1991.
 HU0412
 HU0412.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0412.GEOID18 height accuracy estimate available here.
 HU0412
 HU0412.Click photographs - Photos may exist for this station.
 HU0412
 HU0412.The dynamic height is computed by dividing the NAVD 88
 HU0412.geopotential number by the normal gravity value computed on the
 HU0412.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0412.degrees latitude (g = 980.6199 gals.).
 HU0412
 HU0412.The modeled gravity was interpolated from observed gravity values.
 HU0412
 HU0412;                    North         East    Units  Estimated Accuracy
 HU0412;SPC MD       -    83,922.      523,824.      MT  (+/- 10 meters HH2 GPS)
 HU0412
 HU0412_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4917851914(NAD 83)
 HU0412
 HU0412                          SUPERSEDED SURVEY CONTROL
 HU0412
 HU0412  NGVD 29 (11/26/84)   13.316  (m)           43.69   (f) ADJUSTED    1 1
 HU0412
 HU0412.Superseded values are not recommended for survey control.
 HU0412
 HU0412.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0412.See file dsdata.pdf to determine how the superseded data were derived.
 HU0412
 HU0412_MARKER: DB = BENCH MARK DISK
 HU0412_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0412_STAMPING: G 107 1963
 HU0412_MARK LOGO: CGS
 HU0412_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0412+STABILITY: SURFACE MOTION
 HU0412_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0412+SATELLITE: SATELLITE OBSERVATIONS - April 19, 2004
 HU0412
 HU0412  HISTORY     - Date     Condition        Report By
 HU0412  HISTORY     - 1963     MONUMENTED       CGS
 HU0412  HISTORY     - 1972     GOOD             NGS
 HU0412  HISTORY     - 19900110 GOOD             NGS
 HU0412  HISTORY     - 20040419 GOOD             GEOCAC
 HU0412
 HU0412                          STATION DESCRIPTION
 HU0412
 HU0412'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0412'3.2 MI N FROM SALISBURY.
 HU0412'3.25 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HU0412'AT SALISBURY, ABOUT 3.0 MILES SOUTH ALONG THE PENNSYLVANIA
 HU0412'RAILROAD FROM THE STATION AT DELMAR, SUSSEX COUNTY, DELAWARE, ABOUT
 HU0412'0.1 MILE NORTH OF MILEPOST 3, AT A FARM ROAD CROSSING, 42.5 FEET
 HU0412'SOUTHEAST OF CENTER OF CROSSING, 37 FEET EAST OF EAST RAIL, 13 FEET
 HU0412'SOUTH OF CENTER LINE OF THE ROAD, 3 FEET SOUTH OF A TELEPHONE POLE,
 HU0412'1.5 FEET NORTH OF A STEEL WITNESS POST, 1 FOOT BELOW LEVEL OF TRACK,
 HU0412'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES.
 HU0412
 HU0412                          STATION RECOVERY (1972)
 HU0412
 HU0412'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 HU0412'RECOVERED IN GOOD CONDITION.
 HU0412
 HU0412                          STATION RECOVERY (1990)
 HU0412
 HU0412'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0412'0.8 KM (0.50 MI) NORTHERLY ALONG THE CONRAIL RAILROAD FROM THE
 HU0412'JUNCTION OF NAYLOR MILL ROAD IN SALISBURY, 11.3 M (37.07 FT) EAST OF
 HU0412'THE NEAR RAIL, 4.3 M (14.11 FT) SOUTH OF THE CENTER OF A FARM ROAD,
 HU0412'0.6 M (1.97 FT) BELOW THE LEVEL OF THE TRACK, 0.3 M (0.98 FT) NORTH
 HU0412'OF A WITNESS POST, AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE
 HU0412'GROUND SURFACE.
 HU0412
 HU0412                          STATION RECOVERY (2004)
 HU0412
 HU0412'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU0412'ONE HALF MILE (0.8 KM) NORTHERLY ALONG THE CONRAIL RAILROAD FROM THE
 HU0412'JUNCTION OF NAYLOR MILL ROAD IN SALISBURY, 37.07 FEET (11.3 M) EAST OF
 HU0412'THE NEAR RAIL, 14.11 FEET (4.3 M) SOUTH OF THE CENTER OF A FARM ROAD,
 HU0412'2.5 FEET (0.76 M) EAST-NORTHEAST FROM A FOUR-INCH SQUARE SIGNPOST, 2.0
 HU0412'FEET (0.61 M) BELOW THE LEVEL OF THE TRACK, AND IN A CONCRETE MONUMENT
 HU0412'THAT PROJECTS ONE INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU2491 ***********************************************************************
 JU2491  DESIGNATION -  G 108 RESET
 JU2491  PID         -  JU2491
 JU2491  STATE/COUNTY-  MD/CECIL
 JU2491  COUNTRY     -  US
 JU2491  USGS QUAD   -  ELKTON (2016)
 JU2491
 JU2491                         *CURRENT SURVEY CONTROL
 JU2491  ______________________________________________________________________
 JU2491* NAD 83(1986) POSITION- 39 32 00.93   (N) 075 48 41.52   (W)   HD_HELD1
 JU2491* NAVD 88 ORTHO HEIGHT -    20.98  (meters)       68.8   (feet) RESET
 JU2491  ______________________________________________________________________
 JU2491  GEOID HEIGHT    -        -33.307 (meters)                     GEOID18
 JU2491  VERT ORDER      -  THIRD
 JU2491
 JU2491.The horizontal coordinates were determined by differentially corrected
 JU2491.hand held GPS observations or other comparable positioning techniques
 JU2491.and have an estimated accuracy of +/- 3 meters.
 JU2491
 JU2491.The orthometric height was computed from unverified reset data.
 JU2491
 JU2491.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU2491.GEOID18 height accuracy estimate available here.
 JU2491
 JU2491.Click photographs - Photos may exist for this station.
 JU2491
 JU2491;                    North         East    Units  Estimated Accuracy
 JU2491;SPC MD       -   207,909.6     502,173.6     MT  (+/- 3 meters HH1 GPS) 
 JU2491
 JU2491_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3025876306(NAD 83)
 JU2491
 JU2491                          SUPERSEDED SURVEY CONTROL
 JU2491
 JU2491  NGVD 29 (??/??/??)   21.21   (m)           69.6    (f) RESET       3  
 JU2491
 JU2491.Superseded values are not recommended for survey control.
 JU2491
 JU2491.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU2491.See file dsdata.pdf to determine how the superseded data were derived.
 JU2491
 JU2491_MARKER: DD = SURVEY DISK
 JU2491_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JU2491_SP_SET: WINGWALL
 JU2491_STAMPING: G 108 1963 RESET 1977 PHILA DIST
 JU2491_MARK LOGO: USACE
 JU2491_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU2491_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU2491+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2014
 JU2491
 JU2491  HISTORY     - Date     Condition        Report By
 JU2491  HISTORY     - 1977     MONUMENTED       NGS
 JU2491  HISTORY     - 20050426 GOOD             USPSQD
 JU2491  HISTORY     - 20140311 GOOD             ARCSHE
 JU2491
 JU2491                          STATION DESCRIPTION
 JU2491
 JU2491'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 JU2491'AT CHESAPEAKE CITY.
 JU2491'AT CHESAPEAKE CITY, SET IN THE TOP OF THE NORTHEAST WINGWALL OF
 JU2491'THE CONCRETE ABUTMENT OF U.S. HIGHWAY 213 BRIDGE (CHESAPEAKE CITY
 JU2491'BRIDGE) OVER THE CHESAPEAKE AND DELAWARE CANAL, 19.1 FEET SE
 JU2491'OF THE CENTERLINE OF THE HIGHWAY, 0.8 FOOT EAST OF THE EAST SIDE
 JU2491'OF THE NE CONCRETE GUARDRAIL ON THE BRIDGE AND SET IN THE
 JU2491'WINGWALL.
 JU2491
 JU2491                          STATION RECOVERY (2005)
 JU2491
 JU2491'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPD)
 JU2491'RECOVERED AS DESCRIBED
 JU2491
 JU2491                          STATION RECOVERY (2014)
 JU2491
 JU2491'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JU2491'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1354 ***********************************************************************
 JV1354  DESIGNATION -  G 109 MDSRC
 JV1354  PID         -  JV1354
 JV1354  STATE/COUNTY-  MD/HOWARD
 JV1354  COUNTRY     -  US
 JV1354  USGS QUAD   -  SAVAGE (2016)
 JV1354
 JV1354                         *CURRENT SURVEY CONTROL
 JV1354  ______________________________________________________________________
 JV1354* NAD 83(1986) POSITION- 39 10 04.     (N) 076 51 01.     (W)   SCALED
 JV1354* NAVD 88 ORTHO HEIGHT -    81.008 (meters)      265.77  (feet) ADJUSTED
 JV1354  ______________________________________________________________________
 JV1354  GEOID HEIGHT    -        -32.212 (meters)                     GEOID18
 JV1354  DYNAMIC HEIGHT  -         80.965 (meters)      265.63  (feet) COMP
 JV1354  MODELED GRAVITY -    980,093.0   (mgal)                       NAVD 88
 JV1354
 JV1354  VERT ORDER      -  SECOND    CLASS 0
 JV1354
 JV1354.The horizontal coordinates were scaled from a map and have
 JV1354.an estimated accuracy of +/- 6 seconds.
 JV1354
 JV1354.The orthometric height was determined by differential leveling and
 JV1354.adjusted by the NATIONAL GEODETIC SURVEY
 JV1354.in June 1991.
 JV1354
 JV1354.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1354.GEOID18 height accuracy estimate available here.
 JV1354
 JV1354.Click photographs - Photos may exist for this station.
 JV1354
 JV1354.The dynamic height is computed by dividing the NAVD 88
 JV1354.geopotential number by the normal gravity value computed on the
 JV1354.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1354.degrees latitude (g = 980.6199 gals.).
 JV1354
 JV1354.The modeled gravity was interpolated from observed gravity values.
 JV1354
 JV1354;                    North         East    Units  Estimated Accuracy
 JV1354;SPC MD       -   166,640.      412,940.      MT  (+/- 180 meters Scaled)
 JV1354
 JV1354_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ401370(NAD 83)
 JV1354
 JV1354                          SUPERSEDED SURVEY CONTROL
 JV1354
 JV1354  NGVD 29 (11/26/84)   81.222  (m)          266.48   (f) ADJUSTED    2 0
 JV1354
 JV1354.Superseded values are not recommended for survey control.
 JV1354
 JV1354.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1354.See file dsdata.pdf to determine how the superseded data were derived.
 JV1354
 JV1354_MARKER: DB = BENCH MARK DISK
 JV1354_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1354_STAMPING: G 109 1965 USC AND GS
 JV1354_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1354+STABILITY: SURFACE MOTION
 JV1354
 JV1354  HISTORY     - Date     Condition        Report By
 JV1354  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1354
 JV1354                          STATION DESCRIPTION
 JV1354
 JV1354'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1354'1.8 MI SE FROM SIMPSONVILLE.
 JV1354'ABOUT 1.75 MILES EAST ALONG STATE HIGHWAY 32 FROM THE INTERSECTION
 JV1354'OF U.S. HIGHWAY 29 AT SIMPSONVILLE, 31.0 FEET NORTH OF THE
 JV1354'CENTERLINE OF THE HIGHWAY, 67.0 FEET EAST OF THE CENTERLINE OF A
 JV1354'ROAD LEADING NORTH (BERGER ROAD), 8.0 FEET NORTH OF POWER POLE
 JV1354'NUMBER 309464, 2.0 FEET SOUTH OF A METAL WITNESS POST SET IN A
 JV1354'CONCRETE POST PROJECTING 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1195 ***********************************************************************
 JU1195  DESIGNATION -  G 11
 JU1195  PID         -  JU1195
 JU1195  STATE/COUNTY-  MD/KENT
 JU1195  COUNTRY     -  US
 JU1195  USGS QUAD   -  MILLINGTON (2016)
 JU1195
 JU1195                         *CURRENT SURVEY CONTROL
 JU1195  ______________________________________________________________________
 JU1195* NAD 83(1986) POSITION- 39 18 34.     (N) 075 49 22.     (W)   SCALED
 JU1195* NAVD 88 ORTHO HEIGHT -    21.984 (meters)       72.13  (feet) ADJUSTED
 JU1195  ______________________________________________________________________
 JU1195  GEOID HEIGHT    -        -33.615 (meters)                     GEOID18
 JU1195  DYNAMIC HEIGHT  -         21.973 (meters)       72.09  (feet) COMP
 JU1195  MODELED GRAVITY -    980,110.3   (mgal)                       NAVD 88
 JU1195
 JU1195  VERT ORDER      -  SECOND    CLASS 0
 JU1195
 JU1195.The horizontal coordinates were scaled from a map and have
 JU1195.an estimated accuracy of +/- 6 seconds.
 JU1195
 JU1195.The orthometric height was determined by differential leveling and
 JU1195.adjusted by the NATIONAL GEODETIC SURVEY
 JU1195.in June 1991.
 JU1195
 JU1195.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1195.GEOID18 height accuracy estimate available here.
 JU1195
 JU1195.Click photographs - Photos may exist for this station.
 JU1195
 JU1195.The dynamic height is computed by dividing the NAVD 88
 JU1195.geopotential number by the normal gravity value computed on the
 JU1195.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1195.degrees latitude (g = 980.6199 gals.).
 JU1195
 JU1195.The modeled gravity was interpolated from observed gravity values.
 JU1195
 JU1195;                    North         East    Units  Estimated Accuracy
 JU1195;SPC MD       -   183,010.      501,530.      MT  (+/- 180 meters Scaled)
 JU1195
 JU1195_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ290514(NAD 83)
 JU1195
 JU1195                          SUPERSEDED SURVEY CONTROL
 JU1195
 JU1195  NGVD 29 (11/26/84)   22.225  (m)           72.92   (f) ADJUSTED    2 0
 JU1195
 JU1195.Superseded values are not recommended for survey control.
 JU1195
 JU1195.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1195.See file dsdata.pdf to determine how the superseded data were derived.
 JU1195
 JU1195_MARKER: DB = BENCH MARK DISK
 JU1195_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JU1195_SP_SET: PIER
 JU1195_STAMPING: G 11 1935
 JU1195_MARK LOGO: CGS
 JU1195_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1195
 JU1195  HISTORY     - Date     Condition        Report By
 JU1195  HISTORY     - 1935     MONUMENTED       CGS
 JU1195  HISTORY     - 1964     GOOD             CGS
 JU1195  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JU1195
 JU1195                          STATION DESCRIPTION
 JU1195
 JU1195'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1195'AT MASSEY.
 JU1195'352 FEET EAST OF THE FOUNDATION OF THE OLD PENNSYLVANIA RAILROAD
 JU1195'STATION AT MASSEY, IN THE TOP OF THE SOUTHEAST ONE OF FOUR OLD
 JU1195'CONCRETE FOUNDATION PIERS OF OLD WATER TANK, 36 FEET NORTH OF
 JU1195'NORTH RAIL AND ABOUT 5 FEET HIGHER THAN THE TRACK.  A STANDARD
 JU1195'DISK SET IN A DRILL HOLE OF THE CONCRETE PIER WHICH PROJECTS
 JU1195'ABOUT 2 FEET.
 JU1195
 JU1195                          STATION RECOVERY (1990)
 JU1195
 JU1195'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1195'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1311 ***********************************************************************
 JV1311  DESIGNATION -  G 110
 JV1311  PID         -  JV1311
 JV1311  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1311  COUNTRY     -  US
 JV1311  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1311
 JV1311                         *CURRENT SURVEY CONTROL
 JV1311  ______________________________________________________________________
 JV1311* NAD 83(1986) POSITION- 39 16 59.     (N) 076 32 13.     (W)   SCALED
 JV1311* NAVD 88 ORTHO HEIGHT -    12.481 (meters)       40.95  (feet) POSTED
 JV1311  ______________________________________________________________________
 JV1311  GEOID HEIGHT    -        -32.908 (meters)                     GEOID18
 JV1311  DYNAMIC HEIGHT  -         12.47  (meters)       40.9   (feet) COMP
 JV1311  MODELED GRAVITY -    980,099.9   (mgal)                       NAVD 88
 JV1311
 JV1311  VERT ORDER      -  * POSTED, SEE BELOW
 JV1311
 JV1311.The horizontal coordinates were scaled from a map and have
 JV1311.an estimated accuracy of +/- 6 seconds.
 JV1311
 JV1311.The orthometric height was determined by differential leveling
 JV1311.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV1311
 JV1311.* This is a POSTED BENCH MARK height.
 JV1311
 JV1311.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1311.GEOID18 height accuracy estimate available here.
 JV1311
 JV1311.Click photographs - Photos may exist for this station.
 JV1311
 JV1311.The dynamic height is computed by dividing the NAVD 88
 JV1311.geopotential number by the normal gravity value computed on the
 JV1311.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1311.degrees latitude (g = 980.6199 gals.).
 JV1311
 JV1311.The modeled gravity was interpolated from observed gravity values.
 JV1311
 JV1311;                    North         East    Units  Estimated Accuracy
 JV1311;SPC MD       -   179,530.      439,950.      MT  (+/- 180 meters Scaled)
 JV1311
 JV1311_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ674493(NAD 83)
 JV1311
 JV1311                          SUPERSEDED SURVEY CONTROL
 JV1311
 JV1311  NGVD 29 (11/26/84)   12.723  (m)           41.74   (f) ADJUSTED    1 2
 JV1311
 JV1311.Superseded values are not recommended for survey control.
 JV1311
 JV1311.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1311.See file dsdata.pdf to determine how the superseded data were derived.
 JV1311
 JV1311_MARKER: DB = BENCH MARK DISK
 JV1311_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1311_STAMPING: G-110 1965
 JV1311_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1311+STABILITY: SURFACE MOTION
 JV1311
 JV1311  HISTORY     - Date     Condition        Report By
 JV1311  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1311  HISTORY     - 20140519 MARK NOT FOUND   USPSQD
 JV1311
 JV1311                          STATION DESCRIPTION
 JV1311
 JV1311'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1311'IN BALTIMORE.
 JV1311'STATION IS LOCATED 0.8 MILE SOUTHEAST OF THE BALTIMORE CITY
 JV1311'HOSPITAL AT THE JUNCTION OF DUNDALK AVE. AND KANE STREET.  24.6
 JV1311'FEET NORTHEAST OF THE CENTERLINE OF THE SOUTH BOUND LANE OF
 JV1311'DUNDALK AVE., 7.9 FEET SOUTHWEST OF THE NORTHEAST CURB OF THE
 JV1311'MEDIAN, 50.0 FEET EAST OF POWER POLE 1000 CP, AND IN THE
 JV1311'PROJECTED CENTERLINE OF KANE STREET, SET IN THE TOP OF A CONCRETE
 JV1311'POST FLUSH WITH THE GROUND.
 JV1311
 JV1311                          STATION RECOVERY (2014)
 JV1311
 JV1311'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV1311'THE DUNDALK AVENUE IS PRESENTLY IN THE PROCESS OF WIDENING TO 3
 JV1311'LANES AND THE INTERSECTION WITH KANE STREET IS ALSO BEING ENLARGED.
 JV1311'NO MARKER COULD BE FOUND.  THE NARROW MEDIAN STRIP REMAINING WHERE
 JV1311'THE MARKER WAS, WILL PROBABLY BE ALL CONCRETE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2439 ***********************************************************************
 HV2439  DESIGNATION -  G 111
 HV2439  PID         -  HV2439
 HV2439  STATE/COUNTY-  MD/PRINCE GEORGES
 HV2439  COUNTRY     -  US
 HV2439  USGS QUAD   -  MOUNT VERNON (2019)
 HV2439
 HV2439                         *CURRENT SURVEY CONTROL
 HV2439  ______________________________________________________________________
 HV2439* NAD 83(1986) POSITION- 38 38 45.     (N) 077 02 26.     (W)   SCALED
 HV2439* NAVD 88 ORTHO HEIGHT -    53.602 (meters)      175.86  (feet) POSTED
 HV2439  ______________________________________________________________________
 HV2439  GEOID HEIGHT    -        -32.556 (meters)                     GEOID18
 HV2439  DYNAMIC HEIGHT  -         53.57  (meters)      175.8   (feet) COMP
 HV2439  MODELED GRAVITY -    980,061.4   (mgal)                       NAVD 88
 HV2439
 HV2439  VERT ORDER      -  * POSTED, SEE BELOW
 HV2439
 HV2439.The horizontal coordinates were scaled from a map and have
 HV2439.an estimated accuracy of +/- 6 seconds.
 HV2439
 HV2439.The orthometric height was determined by differential leveling
 HV2439.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV2439
 HV2439.* This is a POSTED BENCH MARK height.
 HV2439
 HV2439.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2439.GEOID18 height accuracy estimate available here.
 HV2439
 HV2439.Click photographs - Photos may exist for this station.
 HV2439
 HV2439.The dynamic height is computed by dividing the NAVD 88
 HV2439.geopotential number by the normal gravity value computed on the
 HV2439.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2439.degrees latitude (g = 980.6199 gals.).
 HV2439
 HV2439.The modeled gravity was interpolated from observed gravity values.
 HV2439
 HV2439;                    North         East    Units  Estimated Accuracy
 HV2439;SPC MD       -   108,690.      396,470.      MT  (+/- 180 meters Scaled)
 HV2439
 HV2439_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH224794(NAD 83)
 HV2439
 HV2439                          SUPERSEDED SURVEY CONTROL
 HV2439
 HV2439  NGVD 29 (05/01/89)   53.842  (m)          176.65   (f) ADJUSTED    2 0
 HV2439  NGVD 29 (??/??/87)   53.885  (m)          176.79   (f) SUPERSEDED  2 0
 HV2439
 HV2439.Superseded values are not recommended for survey control.
 HV2439
 HV2439.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2439.See file dsdata.pdf to determine how the superseded data were derived.
 HV2439
 HV2439_MARKER: DB = BENCH MARK DISK
 HV2439_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2439_STAMPING: G 111 1966 USCGS
 HV2439_MARK LOGO: MDBCSM
 HV2439_PROJECTION: PROJECTING
 HV2439_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2439+STABILITY: SURFACE MOTION
 HV2439
 HV2439  HISTORY     - Date     Condition        Report By
 HV2439  HISTORY     - 1966     MONUMENTED       MDSRC
 HV2439
 HV2439                          STATION DESCRIPTION
 HV2439
 HV2439'DESCRIBED BY MD STATE ROADS COMM 1966
 HV2439'7.2 MI N FROM INDIAN HEAD.
 HV2439'FROM THE PRINCE GEORGE-CHARLES COUNTY LINE PROCEED NORTH ALONG
 HV2439'MARYLAND HIGHWAY 210 FOR 1.1 MILES AND STATION, 40.0 FEET WEST
 HV2439'OF THE CENTERLINE OF THE HIGHWAY, 20.0 FEET NORTH OF THE
 HV2439'CENTERLINE OF A FARM LANE LEADING WEST, 10.0 FEET NORTH EAST
 HV2439'OF POWER POLE, 2.0 FEET EAST OF A METAL WITNESS POS SET IN
 HV2439'THE TOP OF A CONCRETE POST PROJECTING 3 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1286 ***********************************************************************
 JV1286  DESIGNATION -  G 112
 JV1286  PID         -  JV1286
 JV1286  STATE/COUNTY-  MD/BALTIMORE
 JV1286  COUNTRY     -  US
 JV1286  USGS QUAD   -  REISTERSTOWN (2016)
 JV1286
 JV1286                         *CURRENT SURVEY CONTROL
 JV1286  ______________________________________________________________________
 JV1286* NAD 83(1986) POSITION- 39 26 11.     (N) 076 48 03.     (W)   SCALED
 JV1286* NAVD 88 ORTHO HEIGHT -   199.369 (meters)      654.10  (feet) ADJUSTED
 JV1286  ______________________________________________________________________
 JV1286  GEOID HEIGHT    -        -32.120 (meters)                     GEOID18
 JV1286  DYNAMIC HEIGHT  -        199.264 (meters)      653.75  (feet) COMP
 JV1286  MODELED GRAVITY -    980,094.7   (mgal)                       NAVD 88
 JV1286
 JV1286  VERT ORDER      -  SECOND    CLASS 0
 JV1286
 JV1286.The horizontal coordinates were scaled from a map and have
 JV1286.an estimated accuracy of +/- 6 seconds.
 JV1286
 JV1286.The orthometric height was determined by differential leveling and
 JV1286.adjusted by the NATIONAL GEODETIC SURVEY
 JV1286.in June 1991.
 JV1286
 JV1286.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1286.GEOID18 height accuracy estimate available here.
 JV1286
 JV1286.Click photographs - Photos may exist for this station.
 JV1286
 JV1286.The dynamic height is computed by dividing the NAVD 88
 JV1286.geopotential number by the normal gravity value computed on the
 JV1286.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1286.degrees latitude (g = 980.6199 gals.).
 JV1286
 JV1286.The modeled gravity was interpolated from observed gravity values.
 JV1286
 JV1286;                    North         East    Units  Estimated Accuracy
 JV1286;SPC MD       -   196,470.      417,150.      MT  (+/- 180 meters Scaled)
 JV1286
 JV1286_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ450667(NAD 83)
 JV1286
 JV1286                          SUPERSEDED SURVEY CONTROL
 JV1286
 JV1286  NGVD 29 (11/26/84)  199.586  (m)          654.81   (f) ADJUSTED    2 0
 JV1286
 JV1286.Superseded values are not recommended for survey control.
 JV1286
 JV1286.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1286.See file dsdata.pdf to determine how the superseded data were derived.
 JV1286
 JV1286_MARKER: DB = BENCH MARK DISK
 JV1286_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV1286_SP_SET: BUILDING
 JV1286_STAMPING: G-112 1967 USC AND GS
 JV1286_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV1286
 JV1286  HISTORY     - Date     Condition        Report By
 JV1286  HISTORY     - 1967     MONUMENTED       MDSRC
 JV1286  HISTORY     - 20100217 MARK NOT FOUND   JARICE
 JV1286
 JV1286                          STATION DESCRIPTION
 JV1286
 JV1286'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1286'1.5 MI NW FROM OWINGS MILL.
 JV1286'FROM THE BRIDGE OVER THE BALTIMORE BELTWAY PROCEED NORTHWEST ALONG
 JV1286'U.S. 140 (REISTERSTOWN ROAD) FOR 5.0 MILES.  STATION IS SET
 JV1286'VERTICALLY IN THE SOUTH SIDE OF BEALLS FORD CAR DEALERS BUILDING.
 JV1286'72.8 FEET EAST OF THE CENTERLINE U.S. 140, 13.0 FEET NORTH OF THE
 JV1286'CENTERLINE OF THE DRIVEWAY, 8.7 FEET EAST OF THE ENTRANCE TO THE
 JV1286'BUILDING AND 2.5 FEET ABOVE THE GROUND.  A STANDARD DISK STAMPED
 JV1286'G-112 1967 U.S.C. AND G.S.
 JV1286
 JV1286                          STATION RECOVERY (2010)
 JV1286
 JV1286'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV1286'THERE IS A NEW BUILDING AT THIS LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4037 ***********************************************************************
 JV4037  DESIGNATION -  G 112 RESET
 JV4037  PID         -  JV4037
 JV4037  STATE/COUNTY-  MD/BALTIMORE
 JV4037  COUNTRY     -  US
 JV4037  USGS QUAD   -  REISTERSTOWN (2016)
 JV4037
 JV4037                         *CURRENT SURVEY CONTROL
 JV4037  ______________________________________________________________________
 JV4037* NAD 83(1986) POSITION- 39 26 11.     (N) 076 48 03.     (W)   SCALED
 JV4037* NAVD 88 ORTHO HEIGHT -   198.96  (+/-2cm)      652.8   (feet) VERTCON3
 JV4037  ______________________________________________________________________
 JV4037  GEOID HEIGHT    -        -32.120 (meters)                     GEOID18
 JV4037  VERT ORDER      -  THIRD (See Below)
 JV4037
 JV4037.The horizontal coordinates were scaled from a map and have
 JV4037.an estimated accuracy of +/- 6 seconds.
 JV4037
 JV4037.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4037.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4037
 JV4037.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4037.GEOID18 height accuracy estimate available here.
 JV4037
 JV4037.The vertical order pertains to the NGVD 29 superseded value.
 JV4037
 JV4037.Click photographs - Photos may exist for this station.
 JV4037
 JV4037;                    North         East    Units  Estimated Accuracy
 JV4037;SPC MD       -   196,470.      417,150.      MT  (+/- 180 meters Scaled)
 JV4037
 JV4037_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ450667(NAD 83)
 JV4037
 JV4037                          SUPERSEDED SURVEY CONTROL
 JV4037
 JV4037  NGVD 29 (??/??/??)  199.18   (m)          653.5    (f) RESET       3  
 JV4037
 JV4037.Superseded values are not recommended for survey control.
 JV4037
 JV4037.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4037.See file dsdata.pdf to determine how the superseded data were derived.
 JV4037
 JV4037_MARKER: DV = VERTICAL CONTROL DISK
 JV4037_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV4037_SP_SET: CATCH BASIN
 JV4037_STAMPING: G 112 MD SRC RESET 1979
 JV4037_MARK LOGO: NGS
 JV4037_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4037
 JV4037  HISTORY     - Date     Condition        Report By
 JV4037  HISTORY     - 1979     MONUMENTED       MDSRC
 JV4037
 JV4037                          STATION DESCRIPTION
 JV4037
 JV4037'DESCRIBED BY MD STATE ROADS COMM 1979
 JV4037'1.5 MI NW FROM OWINGS MILLS.
 JV4037'LOCATED 5.0 MILES NW ALONG U.S. HIGHWAY 140 (REISTERSTOWN ROAD) FROM
 JV4037'ITS JUNCTION WITH INTERSTATE HIGHWAY 695, IN THE TOP A CURB AND CATCH
 JV4037'BASIN IN A GRASS COVERED ISLAND ON PROPERTY OF THE "METRO OLDSMOBILE
 JV4037'DEALER", 35.7 FEET W OF THE CENTER OF HIGHWAY 140, 34.5 FEET N OF THE
 JV4037'CENTER OF THE N ENTRANCE TO METRO OLDSMOBILE, 19.3 FEET NE OF THE NE
 JV4037'CORNER OF A CONCRETE BASE OF A SIGN AND 144.7 FEET S OF THE CENTER OF
 JV4037'CEDARMERE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6406 ***********************************************************************
 JV6406  DESIGNATION -  G 113
 JV6406  PID         -  JV6406
 JV6406  STATE/COUNTY-  MD/MONTGOMERY
 JV6406  COUNTRY     -  US
 JV6406  USGS QUAD   -  GAITHERSBURG (2016)
 JV6406
 JV6406                         *CURRENT SURVEY CONTROL
 JV6406  ______________________________________________________________________
 JV6406* NAD 83(2011) POSITION- 39 07 36.45898(N) 077 12 41.35681(W)   ADJUSTED
 JV6406* NAD 83(2011) ELLIP HT-    92.281 (meters)        (06/27/12)   ADJUSTED
 JV6406* NAD 83(2011) EPOCH   -  2010.00
 JV6406* NAVD 88 ORTHO HEIGHT -   124.021 (meters)      406.89  (feet) ADJUSTED
 JV6406  ______________________________________________________________________
 JV6406  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 JV6406  NAD 83(2011) X  -  1,096,699.576 (meters)                     COMP
 JV6406  NAD 83(2011) Y  - -4,831,625.107 (meters)                     COMP
 JV6406  NAD 83(2011) Z  -  4,003,304.760 (meters)                     COMP
 JV6406  LAPLACE CORR    -          1.28  (seconds)                    DEFLEC18
 JV6406  DYNAMIC HEIGHT  -        123.956 (meters)      406.68  (feet) COMP
 JV6406  MODELED GRAVITY -    980,100.8   (mgal)                       NAVD 88
 JV6406
 JV6406  VERT ORDER      -  FIRST     CLASS 0
 JV6406
 JV6406  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6406  Standards:
 JV6406         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6406            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6406  -------------------------------------------------------------------
 JV6406  NETWORK    0.51   0.82           0.24   0.16   0.42      0.10874569
 JV6406  -------------------------------------------------------------------
 JV6406  Click here for local accuracies and other accuracy information.
 JV6406
 JV6406.The horizontal coordinates were established by GPS observations
 JV6406.and adjusted by the National Geodetic Survey in June 2012.
 JV6406
 JV6406.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6406.been affixed to the stable North American tectonic plate. See 
 JV6406.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6406
 JV6406.The horizontal coordinates are valid at the epoch date displayed above
 JV6406.which is a decimal equivalence of Year/Month/Day.
 JV6406
 JV6406.The orthometric height was determined by differential leveling and
 JV6406.adjusted by the NATIONAL GEODETIC SURVEY
 JV6406.in June 1991.
 JV6406
 JV6406.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6406.GEOID18 height accuracy estimate available here.
 JV6406
 JV6406.Click photographs - Photos may exist for this station.
 JV6406
 JV6406.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6406
 JV6406.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6406
 JV6406.The ellipsoidal height was determined by GPS observations
 JV6406.and is referenced to NAD 83.
 JV6406
 JV6406.The dynamic height is computed by dividing the NAVD 88
 JV6406.geopotential number by the normal gravity value computed on the
 JV6406.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6406.degrees latitude (g = 980.6199 gals.).
 JV6406
 JV6406.The modeled gravity was interpolated from observed gravity values.
 JV6406
 JV6406. The following values were computed from the NAD 83(2011) position.
 JV6406
 JV6406;                    North         East     Units Scale Factor Converg.
 JV6406;SPC MD       -   162,103.031   381,713.056   MT  0.99995942   -0 07 57.9
 JV6406;SPC MD       -   531,833.03  1,252,336.92   sFT  0.99995942   -0 07 57.9
 JV6406;UTM  18      - 4,333,175.924   308,835.854   MT  1.00004999   -1 23 45.4
 JV6406
 JV6406!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6406!SPC MD       -   0.99998552  x   0.99995942  =   0.99994494
 JV6406!UTM  18      -   0.99998552  x   1.00004999  =   1.00003551
 JV6406
 JV6406:                Primary Azimuth Mark                     Grid Az
 JV6406:SPC MD       -  NBS 3                                    024 48 56.8
 JV6406:UTM  18      -  NBS 3                                    026 04 44.3
 JV6406
 JV6406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0883533175(NAD 83)
 JV6406
 JV6406|---------------------------------------------------------------------|
 JV6406| PID    Reference Object                     Distance      Geod. Az  |
 JV6406|                                                           dddmmss.s |
 JV6406| JV6440 NBS 3                               493.924 METERS 0244058.9 |
 JV6406| JV6439 NBS 5                               478.329 METERS 3200934.2 |
 JV6406|---------------------------------------------------------------------|
 JV6406
 JV6406                          SUPERSEDED SURVEY CONTROL
 JV6406
 JV6406  NAD 83(2007)-  39 07 36.45919(N)    077 12 41.35762(W) AD(2002.00) 0
 JV6406  ELLIP H (02/10/07)   92.315  (m)                       GP(2002.00)    
 JV6406  ELLIP H (08/30/02)   92.319  (m)                       GP(       ) 4 2
 JV6406  ELLIP H (04/01/98)   92.345  (m)                       GP(       ) 4 1
 JV6406  NAD 83(1993)-  39 07 36.45902(N)    077 12 41.35762(W) AD(       ) 1
 JV6406  ELLIP H (11/14/94)   92.214  (m)                       GP(       ) 4 2
 JV6406  NAD 83(1991)-  39 07 36.45630(N)    077 12 41.35534(W) AD(       ) 1
 JV6406  ELLIP H (03/04/93)   92.276  (m)                       GP(       ) 4 1
 JV6406  NAVD 88             124.02   (m)          406.9    (f) LEVELING    3  
 JV6406  NGVD 29 (??/??/92)  124.23   (m)          407.6    (f) COMPUTED    1 0
 JV6406
 JV6406.Superseded values are not recommended for survey control.
 JV6406
 JV6406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6406.See file dsdata.pdf to determine how the superseded data were derived.
 JV6406
 JV6406_MARKER: DB = BENCH MARK DISK
 JV6406_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV6406_STAMPING: G 113 1968
 JV6406_MARK LOGO: CGS
 JV6406_PROJECTION: FLUSH
 JV6406_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6406_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6406_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6406+SATELLITE: SATELLITE OBSERVATIONS - October 02, 2020
 JV6406_ROD/PIPE-DEPTH: 7.8 meters
 JV6406
 JV6406  HISTORY     - Date     Condition        Report By
 JV6406  HISTORY     - 1968     MONUMENTED       CGS
 JV6406  HISTORY     - 19741015 GOOD             NGS
 JV6406  HISTORY     - 19900620 GOOD             NGS
 JV6406  HISTORY     - 19911015 GOOD             NGS
 JV6406  HISTORY     - 19920609 GOOD
 JV6406  HISTORY     - 19970912 GOOD             NGS
 JV6406  HISTORY     - 2017     GOOD             NGS
 JV6406  HISTORY     - 20201002 GOOD             NGS
 JV6406
 JV6406                          STATION DESCRIPTION
 JV6406
 JV6406'DESCRIBED BY COAST AND GEODETIC SURVEY 1968
 JV6406'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6406'TECHNOLOGY GROUNDS, 0.3 MI (0.48 KM) SOUTHEAST ALONG EAST DRIVE FROM
 JV6406'THE JUNCTION OF SOUTH DRIVE, 200 FT (60.96 M) NORTH OF THE CENTER OF
 JV6406'THE JUNCTION OF EAST DRIVE AND MUDDY BRANCH ROAD, 158.5 FT (48.31 M)
 JV6406'NORTHWEST OF THE CENTERLINE OF THE ROAD, 119.5 FT (36.42 M) NORTHEAST
 JV6406'OF THE CENTERLINE OF THE DRIVE, 135.5 FT (41.30 M) NORTH OF THE
 JV6406'NORTHWEST POST TO A GATE ACROSS THE DRIVE, 48.7 FT (14.84 M)
 JV6406'NORTHWEST OF A NORTHEAST-SOUTHWEST FENCE LINE, AND 38.8 FT (11.83 M)
 JV6406'EAST OF BENCH MARK NRC 3.  NOTE--ACCESS THROUGH A 5-INCH METAL COVER.
 JV6406
 JV6406                          STATION RECOVERY (1974)
 JV6406
 JV6406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 JV6406'RECOVERED IN GOOD CONDITION.
 JV6406
 JV6406                          STATION RECOVERY (1990)
 JV6406
 JV6406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6406'RECOVERED IN GOOD CONDITION.
 JV6406
 JV6406                          STATION RECOVERY (1991)
 JV6406
 JV6406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV6406'RECOVERED IN GOOD CONDITION.
 JV6406
 JV6406                          STATION RECOVERY (1992)
 JV6406
 JV6406'RECOVERED 1992
 JV6406'RECOVERED IN GOOD CONDITION.
 JV6406
 JV6406                          STATION RECOVERY (1997)
 JV6406
 JV6406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (RLA)
 JV6406'RECOVERED AS DESCRIBED.
 JV6406
 JV6406                          STATION RECOVERY (2017)
 JV6406
 JV6406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (LHB)
 JV6406'RECOVERED IN GOOD CONDITION.
 JV6406
 JV6406                          STATION RECOVERY (2020)
 JV6406
 JV6406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (PH)
 JV6406'THERE IS NO COVER CAP.  THE MARK IS LOCATED 38.7 FT (11.8 M) NORTH OF
 JV6406'THE ELEVENTH FENCE POST IN THE EAST-WEST FENCE LINE, 85.7 FT (26.1 M)
 JV6406'EAST OF THE SEVENTH FENCE POST IN THE NORTH-SOUTH FENCE LINE AND 34 FT
 JV6406'(10.4 M) WEST-NORTHWEST OF THE LAST TREE IN THE N/S TREE LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1163 ***********************************************************************
 JU1163  DESIGNATION -  G 114
 JU1163  PID         -  JU1163
 JU1163  STATE/COUNTY-  MD/KENT
 JU1163  COUNTRY     -  US
 JU1163  USGS QUAD   -  GALENA (2017)
 JU1163
 JU1163                         *CURRENT SURVEY CONTROL
 JU1163  ______________________________________________________________________
 JU1163* NAD 83(2011) POSITION- 39 20 44.95854(N) 075 52 44.51251(W)   ADJUSTED
 JU1163* NAD 83(2011) ELLIP HT-   -11.554 (meters)        (09/18/23)   ADJUSTED
 JU1163* NAD 83(2011) EPOCH   -  2010.00
 JU1163* NAVD 88 ORTHO HEIGHT -    21.951 (meters)       72.02  (feet) ADJUSTED
 JU1163  ______________________________________________________________________
 JU1163  GEOID HEIGHT    -        -33.528 (meters)                     GEOID18
 JU1163  NAD 83(2011) X  -  1,204,983.940 (meters)                     COMP
 JU1163  NAD 83(2011) Y  - -4,789,822.374 (meters)                     COMP
 JU1163  NAD 83(2011) Z  -  4,022,073.345 (meters)                     COMP
 JU1163  LAPLACE CORR    -         -2.03  (seconds)                    DEFLEC18
 JU1163  DYNAMIC HEIGHT  -         21.940 (meters)       71.98  (feet) COMP
 JU1163  MODELED GRAVITY -    980,110.7   (mgal)                       NAVD 88
 JU1163
 JU1163  VERT ORDER      -  FIRST     CLASS II
 JU1163
 JU1163  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU1163  Standards:
 JU1163         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU1163            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU1163  -------------------------------------------------------------------
 JU1163  NETWORK    0.48   1.12           0.21   0.18   0.57     -0.03757393
 JU1163  -------------------------------------------------------------------
 JU1163  Click here for local accuracies and other accuracy information.
 JU1163
 JU1163.The horizontal coordinates were established by GPS observations
 JU1163.and adjusted by the MD DEPT OF TRANSP in September 2023.
 JU1163
 JU1163.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU1163.been affixed to the stable North American tectonic plate. See 
 JU1163.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU1163
 JU1163.The horizontal coordinates are valid at the epoch date displayed above
 JU1163.which is a decimal equivalence of Year/Month/Day.
 JU1163
 JU1163.The orthometric height was determined by differential leveling and
 JU1163.adjusted by the NATIONAL GEODETIC SURVEY
 JU1163.in June 1991.
 JU1163
 JU1163.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1163.GEOID18 height accuracy estimate available here.
 JU1163
 JU1163.Click photographs - Photos may exist for this station.
 JU1163
 JU1163.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU1163
 JU1163.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU1163
 JU1163.The ellipsoidal height was determined by GPS observations
 JU1163.and is referenced to NAD 83.
 JU1163
 JU1163.The dynamic height is computed by dividing the NAVD 88
 JU1163.geopotential number by the normal gravity value computed on the
 JU1163.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1163.degrees latitude (g = 980.6199 gals.).
 JU1163
 JU1163.The modeled gravity was interpolated from observed gravity values.
 JU1163
 JU1163. The following values were computed from the NAD 83(2011) position.
 JU1163
 JU1163;                    North         East     Units Scale Factor Converg.
 JU1163;SPC MD       -   186,990.842   496,626.997   MT  0.99998344   +0 42 12.8
 JU1163;SPC MD       -   613,485.79  1,629,350.41   sFT  0.99998344   +0 42 12.8
 JU1163;UTM  18      - 4,355,522.341   424,254.466   MT  0.99967064   -0 33 26.4
 JU1163
 JU1163!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU1163!SPC MD       -   1.00000181  x   0.99998344  =   0.99998525
 JU1163!UTM  18      -   1.00000181  x   0.99967064  =   0.99967245
 JU1163
 JU1163_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2425455522(NAD 83)
 JU1163
 JU1163                          SUPERSEDED SURVEY CONTROL
 JU1163
 JU1163  NGVD 29 (11/26/84)   22.194  (m)           72.81   (f) ADJUSTED    1 2
 JU1163
 JU1163.Superseded values are not recommended for survey control.
 JU1163
 JU1163.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1163.See file dsdata.pdf to determine how the superseded data were derived.
 JU1163
 JU1163_MARKER: DB = BENCH MARK DISK
 JU1163_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JU1163_STAMPING: G 114 1971
 JU1163_MARK LOGO: CGS
 JU1163_PROJECTION: PROJECTING 5 CENTIMETERS
 JU1163_MAGNETIC: I = MARKER IS A STEEL ROD
 JU1163_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1163_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1163+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2025
 JU1163
 JU1163  HISTORY     - Date     Condition        Report By
 JU1163  HISTORY     - 1971     MONUMENTED       NGS
 JU1163  HISTORY     - 20050101 GOOD             USPSQD
 JU1163  HISTORY     - 20070204 GOOD             USPSQD
 JU1163  HISTORY     - 20130503 GOOD             ARCSHE
 JU1163  HISTORY     - 20211226 GOOD             MDSHA
 JU1163  HISTORY     - 20220202 GOOD             MDSHA
 JU1163  HISTORY     - 20250821 GOOD             PROFLN
 JU1163
 JU1163                          STATION DESCRIPTION
 JU1163
 JU1163'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1163'0.4 MI N FROM GALENA.
 JU1163'ABOUT 0.35 MILE NORTH ALONG U.S. HIGHWAY 213 FROM THE
 JU1163'INTERSECTION OF STATE HIGHWAYS 290 AND 313 AT GALENA, NEAR THE
 JU1163'ST. DENNIS CATHOLIC CHURCH, 108.0 FEET SOUTHEAST OF THE
 JU1163'SOUTHEAST CORNER OF THE BUILDING, 33 FEET WEST OF THE CENTER
 JU1163'LINE OF THE HIGHWAY, 34 FEET SOUTH OF THE NORTHEAST CORNER OF
 JU1163'THE CEMETERY AT THE CHURCH, 16.3 FEET NORTH OF THE NORTH SIDE OF
 JU1163'THE NORTH BRICK GATE POST AT THE ENTRANCE TO THE CEMETERY, 0.9
 JU1163'FOOT EAST OF THE METAL FENCE ON THE EAST SIDE OF THE CEMETERY,
 JU1163'ABOUT 2 FEET ABOVE THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A
 JU1163'COPPER COATED ROD WHICH IS LEVEL WITH THE SURFACE OF THE GROUND
 JU1163'AND IS PROTECTED BY A 4-INCH METAL PIPE THAT PROJECTS 6 INCHES.
 JU1163'THE ROD WAS DRIVEN TO A DEPTH OF 64 FEET.
 JU1163
 JU1163                          STATION RECOVERY (2005)
 JU1163
 JU1163'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JU1163'RECOVERED IN GOOD CONDITION.
 JU1163
 JU1163                          STATION RECOVERY (2007)
 JU1163
 JU1163'RECOVERY NOTE BY US POWER SQUADRON 2007 (JKW)
 JU1163'RECOVERED IN GOOD CONDITION.
 JU1163
 JU1163                          STATION RECOVERY (2013)
 JU1163
 JU1163'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU1163'RECOVERED IN GOOD CONDITION.
 JU1163
 JU1163                          STATION RECOVERY (2021)
 JU1163
 JU1163'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JU1163'THE MARK IS LOCATED ABOUT 13.8 MI (22.2 KM) NORTHEAST OF CHESTERTOWN,
 JU1163'4.0 MI (6.4 KM) SOUTH OF CECILTON, 3.8 MI (6.1 KM) NORTHWEST OF MASSEY
 JU1163'AND IN THE TOWN OF GALENA, MD.
 JU1163'
 JU1163'TO REACH THE MARK FROM THE JUNCTION OF MD 290 AND MD 213 N AND N MAIN
 JU1163'ST, GO NORTH-NORTHWEST ON N MAIN ST FOR 0.36 MI (0.58 KM) TO THE MARK
 JU1163'ON THE LEFT.
 JU1163'
 JU1163'THE MARK IS 42.4 FT (12.9 M) SOUTH-SOUTHWEST OF THE CENTERLINE OF A
 JU1163'PAVED DRIVEWAY OF SAINT DENNIS CATHOLIC CHURCH, 32.9 FT (10.0 M)
 JU1163'SOUTH-SOUTHWEST OF A WATER METER, 30.4 FT (9.3 M) SOUTH-SOUTHWEST OF A
 JU1163'UTILITY POLE NUMBERED DP AND L 259/DPL 39184-28903, 29.3 FT (8.9 M)
 JU1163'WEST OF THE CENTERLINE OF STATE ROUTE MD 213, 23.5 FT (7.2 M)
 JU1163'NORTH-NORTHEAST OF THE CENTERLINE OF A PAVED ENTRANCE OF THE CEMETERY
 JU1163'AND ABOUT 2 FT (0.6 M) HIGHER THAN THE HIGHWAY.
 JU1163
 JU1163                          STATION RECOVERY (2022)
 JU1163
 JU1163'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 JU1163'RECOVERED AS DESCRIBED.
 JU1163
 JU1163                          STATION RECOVERY (2025)
 JU1163
 JU1163'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1163'THE MARK IS ALMOST UNDER THE CEMETERY FENCE, JUST OUTSIDE IT, UP 2
 JU1163'INCHES (5 CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0268 ***********************************************************************
 JV0268  DESIGNATION -  G 115
 JV0268  PID         -  JV0268
 JV0268  STATE/COUNTY-  MD/KENT
 JV0268  COUNTRY     -  US
 JV0268  USGS QUAD   -  BETTERTON (2017)
 JV0268
 JV0268                         *CURRENT SURVEY CONTROL
 JV0268  ______________________________________________________________________
 JV0268* NAD 83(1986) POSITION- 39 16 59.1    (N) 076 05 35.7    (W)   HD_HELD2
 JV0268* NAVD 88 ORTHO HEIGHT -    28.571 (meters)       93.74  (feet) ADJUSTED
 JV0268  ______________________________________________________________________
 JV0268  GEOID HEIGHT    -        -33.335 (meters)                     GEOID18
 JV0268  DYNAMIC HEIGHT  -         28.556 (meters)       93.69  (feet) COMP
 JV0268  MODELED GRAVITY -    980,111.3   (mgal)                       NAVD 88
 JV0268
 JV0268  VERT ORDER      -  FIRST     CLASS II
 JV0268
 JV0268.The horizontal coordinates were established by autonomous hand held GPS
 JV0268.observations and have an estimated accuracy of +/- 10 meters.
 JV0268
 JV0268.The orthometric height was determined by differential leveling and
 JV0268.adjusted by the NATIONAL GEODETIC SURVEY
 JV0268.in June 1991.
 JV0268
 JV0268.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0268.GEOID18 height accuracy estimate available here.
 JV0268
 JV0268.Click photographs - Photos may exist for this station.
 JV0268
 JV0268.The dynamic height is computed by dividing the NAVD 88
 JV0268.geopotential number by the normal gravity value computed on the
 JV0268.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0268.degrees latitude (g = 980.6199 gals.).
 JV0268
 JV0268.The modeled gravity was interpolated from observed gravity values.
 JV0268
 JV0268;                    North         East    Units  Estimated Accuracy
 JV0268;SPC MD       -   179,821.      478,231.      MT  (+/- 10 meters HH2 GPS)
 JV0268
 JV0268_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0571048761(NAD 83)
 JV0268
 JV0268                          SUPERSEDED SURVEY CONTROL
 JV0268
 JV0268  NGVD 29 (11/26/84)   28.811  (m)           94.52   (f) ADJUSTED    1 2
 JV0268
 JV0268.Superseded values are not recommended for survey control.
 JV0268
 JV0268.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0268.See file dsdata.pdf to determine how the superseded data were derived.
 JV0268
 JV0268_MARKER: DB = BENCH MARK DISK
 JV0268_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0268_SP_SET: BUILDING
 JV0268_STAMPING: G 115 1971
 JV0268_MARK LOGO: CGS
 JV0268_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0268_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0268+SATELLITE: SATELLITE OBSERVATIONS - April 16, 2025
 JV0268
 JV0268  HISTORY     - Date     Condition        Report By
 JV0268  HISTORY     - 1971     MONUMENTED       NGS
 JV0268  HISTORY     - 1990     GOOD             USPSQD
 JV0268  HISTORY     - 19960824 GOOD             USPSQD
 JV0268  HISTORY     - 20011228 GOOD             USPSQD
 JV0268  HISTORY     - 20140117 GOOD             ARCSHE
 JV0268  HISTORY     - 20250416 GOOD             PROFLN
 JV0268
 JV0268                          STATION DESCRIPTION
 JV0268
 JV0268'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0268'0.7 MI N FROM WORTON.
 JV0268'ABOUT 0.7 MILE NORTH ALONG STATE HIGHWAY 297 FROM THE WORTON
 JV0268'METHODIST CHURCH AT WORTON, AT THE WORTON ELEMENTARY SCHOOL,
 JV0268'358 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, SET VERTICALLY
 JV0268'IN THE WEST BRICK FACE AND AT THE SOUTHWEST CORNER OF THE WEST
 JV0268'WING OF THE SOUTHWEST PART OF THE BUILDING, 184 FEET SOUTH OF
 JV0268'THE CENTER OF THE WEST MAIN ENTRANCE TO THE BUILDING, 16.8
 JV0268'FEET EAST OF THE EAST CURB OF A DRIVEWAY ON THE WEST SIDE OF THE
 JV0268'BUILDING AND 1.8 FEET ABOVE THE LEVEL OF THE GROUND.
 JV0268
 JV0268                          STATION RECOVERY (1990)
 JV0268
 JV0268'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0268'RECOVERED IN GOOD CONDITION.
 JV0268
 JV0268                          STATION RECOVERY (1996)
 JV0268
 JV0268'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0268'RECOVERED IN GOOD CONDITION.
 JV0268
 JV0268                          STATION RECOVERY (2001)
 JV0268
 JV0268'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0268'RECOVERED IN GOOD CONDITION.
 JV0268
 JV0268                          STATION RECOVERY (2014)
 JV0268
 JV0268'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0268'RECOVERED IN GOOD CONDITION.
 JV0268
 JV0268                          STATION RECOVERY (2025)
 JV0268
 JV0268'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0268'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1869 ***********************************************************************
 JU1869  DESIGNATION -  G 118
 JU1869  PID         -  JU1869
 JU1869  STATE/COUNTY-  MD/CECIL
 JU1869  COUNTRY     -  US
 JU1869  USGS QUAD   -  NORTH EAST (2016)
 JU1869
 JU1869                         *CURRENT SURVEY CONTROL
 JU1869  ______________________________________________________________________
 JU1869* NAD 83(1986) POSITION- 39 36 30.9    (N) 075 52 53.0    (W)   HD_HELD2
 JU1869* NAVD 88 ORTHO HEIGHT -    38.553 (meters)      126.49  (feet) ADJUSTED
 JU1869  ______________________________________________________________________
 JU1869  GEOID HEIGHT    -        -33.157 (meters)                     GEOID18
 JU1869  DYNAMIC HEIGHT  -         38.534 (meters)      126.42  (feet) COMP
 JU1869  MODELED GRAVITY -    980,136.0   (mgal)                       NAVD 88
 JU1869
 JU1869  VERT ORDER      -  FIRST     CLASS I
 JU1869
 JU1869.The horizontal coordinates were established by autonomous hand held GPS
 JU1869.observations and have an estimated accuracy of +/- 10 meters.
 JU1869
 JU1869.The orthometric height was determined by differential leveling and
 JU1869.adjusted by the NATIONAL GEODETIC SURVEY
 JU1869.in June 1991.
 JU1869
 JU1869.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1869.GEOID18 height accuracy estimate available here.
 JU1869
 JU1869.Click photographs - Photos may exist for this station.
 JU1869
 JU1869.The dynamic height is computed by dividing the NAVD 88
 JU1869.geopotential number by the normal gravity value computed on the
 JU1869.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1869.degrees latitude (g = 980.6199 gals.).
 JU1869
 JU1869.The modeled gravity was interpolated from observed gravity values.
 JU1869
 JU1869;                    North         East    Units  Estimated Accuracy
 JU1869;SPC MD       -   216,159.      496,066.      MT  (+/- 10 meters HH2 GPS)
 JU1869
 JU1869_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2433684686(NAD 83)
 JU1869
 JU1869                          SUPERSEDED SURVEY CONTROL
 JU1869
 JU1869  NGVD 29 (11/26/84)   38.788  (m)          127.26   (f) ADJUSTED    1 1
 JU1869
 JU1869.Superseded values are not recommended for survey control.
 JU1869
 JU1869.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1869.See file dsdata.pdf to determine how the superseded data were derived.
 JU1869
 JU1869_MARKER: DB = BENCH MARK DISK
 JU1869_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JU1869+WITH SETTING: INTO GROUND
 JU1869_STAMPING: G 118 1971
 JU1869_MARK LOGO: CGS
 JU1869_PROJECTION: PROJECTING 3 CENTIMETERS
 JU1869_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1869+STABILITY: SURFACE MOTION
 JU1869_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1869+SATELLITE: SATELLITE OBSERVATIONS - August 20, 2014
 JU1869
 JU1869  HISTORY     - Date     Condition        Report By
 JU1869  HISTORY     - 1971     MONUMENTED       NGS
 JU1869  HISTORY     - 1982     GOOD             LOCSUR
 JU1869  HISTORY     - 20140820 GOOD             JARICE
 JU1869
 JU1869                          STATION DESCRIPTION
 JU1869
 JU1869'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1869'3 MI W FROM ELKTON.
 JU1869'ABOUT 2.95 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE JUNCTION OF
 JU1869'U.S. HIGHWAY 213 AT ELKTON, ABOUT 0.1 MILE EAST OF THE SUMMIT OF
 JU1869'A HILL IN THE HIGHWAY, 46 FEET SOUTH OF THE CENTER LINE OF THE
 JU1869'SOUTH LANES OF THE HIGHWAY, 122.0 FEET SOUTHEAST OF THE EAST END
 JU1869'OF A 30-INCH METAL PIPE CULVERT UNDER A PRIVATE DRIVE THAT LEADS
 JU1869'SOUTH TO A HOUSE, 161.0 FEET SOUTHWEST OF THE WEST END OF A
 JU1869'30-INCH METAL PIPE CULVERT UNDER A PRIVATE DRIVE THAT LEADS SOUTH
 JU1869'OF A COBBLESTONE HOUSE, 3 FEET WEST OF POWER POLE NUMBER 16369,
 JU1869'2.5 FEET EAST OF A METAL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY,
 JU1869'AND ON THE TOP OF A 4-FOOT SECTION OF COPPER COATED ROAD THAT
 JU1869'IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS LEVEL WITH THE
 JU1869'SURFACE OF THE GROUND AND IS PROTECTED BY A 5-INCH METAL PIPE
 JU1869'THAT PROJECTS 1 INCH.
 JU1869
 JU1869                          STATION RECOVERY (1982)
 JU1869
 JU1869'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
 JU1869'RECOVERED IN GOOD CONDITION.
 JU1869
 JU1869                          STATION RECOVERY (2014)
 JU1869
 JU1869'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JU1869'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0615 ***********************************************************************
 HU0615  DESIGNATION -  G 119
 HU0615  PID         -  HU0615
 HU0615  STATE/COUNTY-  MD/WICOMICO
 HU0615  COUNTRY     -  US
 HU0615  USGS QUAD   -  HEBRON (2016)
 HU0615
 HU0615                         *CURRENT SURVEY CONTROL
 HU0615  ______________________________________________________________________
 HU0615* NAD 83(1986) POSITION- 38 25 47.8    (N) 075 40 24.7    (W)   HD_HELD2
 HU0615* NAVD 88 ORTHO HEIGHT -    13.000 (meters)       42.65  (feet) ADJUSTED
 HU0615  ______________________________________________________________________
 HU0615  GEOID HEIGHT    -        -35.687 (meters)                     GEOID18
 HU0615  DYNAMIC HEIGHT  -         12.992 (meters)       42.62  (feet) COMP
 HU0615  MODELED GRAVITY -    980,011.6   (mgal)                       NAVD 88
 HU0615
 HU0615  VERT ORDER      -  FIRST     CLASS II
 HU0615
 HU0615.The horizontal coordinates were established by autonomous hand held GPS
 HU0615.observations and have an estimated accuracy of +/- 10 meters.
 HU0615
 HU0615.The orthometric height was determined by differential leveling and
 HU0615.adjusted by the NATIONAL GEODETIC SURVEY
 HU0615.in June 1991.
 HU0615
 HU0615.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0615.GEOID18 height accuracy estimate available here.
 HU0615
 HU0615.Click photographs - Photos may exist for this station.
 HU0615
 HU0615.The dynamic height is computed by dividing the NAVD 88
 HU0615.geopotential number by the normal gravity value computed on the
 HU0615.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0615.degrees latitude (g = 980.6199 gals.).
 HU0615
 HU0615.The modeled gravity was interpolated from observed gravity values.
 HU0615
 HU0615;                    North         East    Units  Estimated Accuracy
 HU0615;SPC MD       -    85,568.      515,817.      MT  (+/- 10 meters HH2 GPS)
 HU0615
 HU0615_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4121253734(NAD 83)
 HU0615
 HU0615                          SUPERSEDED SURVEY CONTROL
 HU0615
 HU0615  NGVD 29 (06/12/91)   13.245  (m)           43.45   (f) ADJUSTED    1 2
 HU0615  NGVD 29 (??/??/87)   13.245  (m)           43.45   (f) SUPERSEDED  1 2
 HU0615
 HU0615.Superseded values are not recommended for survey control.
 HU0615
 HU0615.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0615.See file dsdata.pdf to determine how the superseded data were derived.
 HU0615
 HU0615_MARKER: DB = BENCH MARK DISK
 HU0615_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU0615+WITH SETTING: INTO GROUND
 HU0615_STAMPING: G 119 1971
 HU0615_MARK LOGO: CGS
 HU0615_PROJECTION: RECESSED 15 CENTIMETERS
 HU0615_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0615_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0615+STABILITY: SURFACE MOTION
 HU0615_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0615+SATELLITE: SATELLITE OBSERVATIONS - September 06, 2018
 HU0615_ROD/PIPE-DEPTH: 1.2 meters
 HU0615
 HU0615  HISTORY     - Date     Condition        Report By
 HU0615  HISTORY     - 1971     MONUMENTED       NGS
 HU0615  HISTORY     - 19900109 GOOD             NGS
 HU0615  HISTORY     - 20010502 GOOD             MDSHA
 HU0615  HISTORY     - 20180906 GOOD             PROFLN
 HU0615
 HU0615                          STATION DESCRIPTION
 HU0615
 HU0615'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0615'1.2 MI NE FROM HEBRON.
 HU0615'ABOUT 1.2 MILES NORTHEAST ALONG STATE HIGHWAY 347 FROM THE POST
 HU0615'OFFICE AT HEBRON, 184 1/2 FEET SOUTHEAST OF THE CENTER LINE OF
 HU0615'STATE HIGHWAY 347, 163 1/2 FEET WEST OF THE SOUTHWEST CORNER OF
 HU0615'THE ST PAULS EPISCOPAL CHURCH, 114 FEET NORTHWEST OF THE
 HU0615'NORTHWEST CORNER OF THE CHURCH HALL, 57 FEET EAST OF THE CENTER
 HU0615'LINE OF THE EAST LANE OF U.S. HIGHWAY 50, 80 FEET NORTH OF POWER
 HU0615'LINE POLE T 21, 19 FEET WEST OF THE CENTER LINE OF A PAVED
 HU0615'DRIVEWAY, 3 1/2 FEET SOUTH OF AN IRON POST SUPPORTING A SIGN,
 HU0615'ABOUT LEVEL WITH THE HIGHWAY, ON THE TOP OF A 4 FOOT COPPER
 HU0615'COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE
 HU0615'DISK IS 4 INCHES BELOW THE LEVEL OF THE GROUND AND ENCASED IN A 6
 HU0615'INCH PIPE THAT IS 3 INCHES BELOW THE LEVEL OF THE GROUND.
 HU0615
 HU0615                          STATION RECOVERY (1990)
 HU0615
 HU0615'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0615'1.8 KM (1.12 MI) NORTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU0615'ROAD) FROM THE POST OFFICE IN HEBRON, 56.4 M (185.04 FT) SOUTHEAST OF
 HU0615'THE EXTENDED CENTER OF THE HIGHWAY, 49.8 M (163.39 FT) WEST OF THE
 HU0615'SOUTHWEST CORNER OF THE SAINT PAULS EPISCOPAL CHURCH, 34.8 M (114.17
 HU0615'FT) NORTHWEST OF THE NORTHWEST CORNER OF THE SAINT PAULS PARISH
 HU0615'HOUSE, 24.7 M (81.04 FT) NORTHWEST OF UTILITY POLE NUMBER 44744
 HU0615'95500, 18.0 M (59.05 FT) NORTHEAST OF THE CENTERLINE OF THE WESTBOUND
 HU0615'LANES OF U.S. HIGHWAY 50, 6.4 M (21.00 FT) SOUTHWEST OF THE CENTER
 HU0615'OF A PAVED ROAD, 6.1 M (20.01 FT) SOUTHEAST OF A HISTORICAL SIGN, AND
 HU0615'LEVEL WITH THE STATE HIGHWAY.  NOTE--THE DISK IS CRIMPED TO THE TOP
 HU0615'OF A COPPER COATED STEEL ROD ATTACHED TO A METAL BASE PLATE AND
 HU0615'ENCASED IN 4-INCH PIPE THAT IS 0.15 M (0.49 FT) BELOW THE GROUND
 HU0615'SURFACE.
 HU0615
 HU0615                          STATION RECOVERY (2001)
 HU0615
 HU0615'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU0615'RECOVERED AS DESCRIBED.
 HU0615
 HU0615                          STATION RECOVERY (2018)
 HU0615
 HU0615'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2018 (JRO)
 HU0615'THE STATION IS LOCATED ABOUT 5.5 MI (8.8 KM) WEST-SOUTHWEST OF DELMAR,
 HU0615'5.1 MI (8.2 KM) EAST-SOUTHEAST OF MARDELA SPRINGS AND 1.0 MI (1.6 KM)
 HU0615'NORTHEAST OF HEBRON AT THE JUNCTION OF US 50 AND MD 347.
 HU0615'
 HU0615'IT IS 172.4 FT (52.5 M) NORTHWEST OF THE SOUTH CORNER OF THE CHURCH
 HU0615'PARISH HOUSE NUMBER 8700, 114.5 FT (34.9 M) WEST OF THE WEST CORNER OF
 HU0615'THE CHURCH PARISH, 84.1 FT (25.6 M) NORTHWEST OF POWER POLE NUMBER
 HU0615'44744 95500, 58.0 FT (17.7 M) NORTHEAST OF THE CENTERLINE OF US 50
 HU0615'WESTBOUND LANE, 49.5 FT (15.1 M) SOUTHWEST OF THE FOUR IMMORTAL
 HU0615'CHAPLAINS MEMORIAL STONE, 45.3 FT (13.8 M) SOUTHEAST OF OF THE
 HU0615'SOUTHEAST FACE OF THE CHURCH SIGN, 3.5 FT (1.1 M) SOUTH-SOUTHEAST OF A
 HU0615'HISTORICAL SIGN, ABOUT LEVEL WITH THE HIGHWAY AND SET BENEATH A 6 INCH
 HU0615'(15 CM) ROUND VALVE BOX FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1858 ***********************************************************************
 JV1858  DESIGNATION -  G 12
 JV1858  PID         -  JV1858
 JV1858  STATE/COUNTY-  MD/FREDERICK
 JV1858  COUNTRY     -  US
 JV1858  USGS QUAD   -  WOODSBORO (2016)
 JV1858
 JV1858                         *CURRENT SURVEY CONTROL
 JV1858  ______________________________________________________________________
 JV1858* NAD 83(1986) POSITION- 39 33 51.     (N) 077 17 39.     (W)   SCALED
 JV1858* NAVD 88 ORTHO HEIGHT -   142.300 (meters)      466.86  (feet) ADJUSTED
 JV1858  ______________________________________________________________________
 JV1858  GEOID HEIGHT    -        -32.887 (meters)                     GEOID18
 JV1858  DYNAMIC HEIGHT  -        142.223 (meters)      466.61  (feet) COMP
 JV1858  MODELED GRAVITY -    980,083.5   (mgal)                       NAVD 88
 JV1858
 JV1858  VERT ORDER      -  SECOND    CLASS 0
 JV1858
 JV1858.The horizontal coordinates were scaled from a map and have
 JV1858.an estimated accuracy of +/- 6 seconds.
 JV1858
 JV1858.The orthometric height was determined by differential leveling and
 JV1858.adjusted by the NATIONAL GEODETIC SURVEY
 JV1858.in June 1991.
 JV1858
 JV1858.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1858.GEOID18 height accuracy estimate available here.
 JV1858
 JV1858.Click photographs - Photos may exist for this station.
 JV1858
 JV1858.The dynamic height is computed by dividing the NAVD 88
 JV1858.geopotential number by the normal gravity value computed on the
 JV1858.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1858.degrees latitude (g = 980.6199 gals.).
 JV1858
 JV1858.The modeled gravity was interpolated from observed gravity values.
 JV1858
 JV1858;                    North         East    Units  Estimated Accuracy
 JV1858;SPC MD       -   210,680.      374,720.      MT  (+/- 180 meters Scaled)
 JV1858
 JV1858_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ029818(NAD 83)
 JV1858
 JV1858                          SUPERSEDED SURVEY CONTROL
 JV1858
 JV1858  NGVD 29 (11/26/84)  142.502  (m)          467.53   (f) ADJUSTED    2 0
 JV1858
 JV1858.Superseded values are not recommended for survey control.
 JV1858
 JV1858.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1858.See file dsdata.pdf to determine how the superseded data were derived.
 JV1858
 JV1858_MARKER: DB = BENCH MARK DISK
 JV1858_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1858_STAMPING: G 12 1935
 JV1858_MARK LOGO: CGS
 JV1858_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1858+STABILITY: SURFACE MOTION
 JV1858
 JV1858  HISTORY     - Date     Condition        Report By
 JV1858  HISTORY     - 1935     MONUMENTED       CGS
 JV1858
 JV1858                          STATION DESCRIPTION
 JV1858
 JV1858'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1858'AT NEW MIDWAY.
 JV1858'AT NEW MIDWAY, FREDERICK COUNTY, ABOUT 498 FEET NORTH OF THE
 JV1858'PENNSYLVANIA RAILROAD STATION, 60 FEET NORTHEAST OF MILEPOST
 JV1858'13, 48 FEET EAST OF THE CENTER LINE OF THE TRACK, AND 2 FEET
 JV1858'WEST OF THE RIGHT-OF-WAY FENCE.  A STANDARD DISK, STAMPED G 12
 JV1858'1935 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0227 ***********************************************************************
 HV0227  DESIGNATION -  G 120
 HV0227  PID         -  HV0227
 HV0227  STATE/COUNTY-  MD/DORCHESTER
 HV0227  COUNTRY     -  US
 HV0227  USGS QUAD   -  CAMBRIDGE (2016)
 HV0227
 HV0227                         *CURRENT SURVEY CONTROL
 HV0227  ______________________________________________________________________
 HV0227* NAD 83(1986) POSITION- 38 33 07.6    (N) 076 02 16.7    (W)   HD_HELD2
 HV0227* NAVD 88 ORTHO HEIGHT -     7.531 (meters)       24.71  (feet) ADJUSTED
 HV0227  ______________________________________________________________________
 HV0227  GEOID HEIGHT    -        -35.130 (meters)                     GEOID18
 HV0227  DYNAMIC HEIGHT  -          7.526 (meters)       24.69  (feet) COMP
 HV0227  MODELED GRAVITY -    980,016.2   (mgal)                       NAVD 88
 HV0227
 HV0227  VERT ORDER      -  FIRST     CLASS II
 HV0227
 HV0227.The horizontal coordinates were established by autonomous hand held GPS
 HV0227.observations and have an estimated accuracy of +/- 10 meters.
 HV0227
 HV0227.The orthometric height was determined by differential leveling and
 HV0227.adjusted by the NATIONAL GEODETIC SURVEY
 HV0227.in June 1991.
 HV0227
 HV0227.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0227.GEOID18 height accuracy estimate available here.
 HV0227
 HV0227.Click photographs - Photos may exist for this station.
 HV0227
 HV0227.The dynamic height is computed by dividing the NAVD 88
 HV0227.geopotential number by the normal gravity value computed on the
 HV0227.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0227.degrees latitude (g = 980.6199 gals.).
 HV0227
 HV0227.The modeled gravity was interpolated from observed gravity values.
 HV0227
 HV0227;                    North         East    Units  Estimated Accuracy
 HV0227;SPC MD       -    98,730.      483,855.      MT  (+/- 10 meters HH2 GPS)
 HV0227
 HV0227_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0955567586(NAD 83)
 HV0227
 HV0227                          SUPERSEDED SURVEY CONTROL
 HV0227
 HV0227  NGVD 29 (11/26/84)    7.765  (m)           25.48   (f) ADJUSTED    1 2
 HV0227
 HV0227.Superseded values are not recommended for survey control.
 HV0227
 HV0227.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0227.See file dsdata.pdf to determine how the superseded data were derived.
 HV0227
 HV0227_MARKER: DB = BENCH MARK DISK
 HV0227_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0227_STAMPING: G 120 1971
 HV0227_MARK LOGO: CGS
 HV0227_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0227_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0227+SATELLITE: SATELLITE OBSERVATIONS - January 07, 2007
 HV0227
 HV0227  HISTORY     - Date     Condition        Report By
 HV0227  HISTORY     - 1971     MONUMENTED       NGS
 HV0227  HISTORY     - 20010207 GOOD             USPSQD
 HV0227  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV0227  HISTORY     - 20041126 GOOD             USPSQD
 HV0227  HISTORY     - 20051127 GOOD             USPSQD
 HV0227  HISTORY     - 20070107 GOOD             USPSQD
 HV0227
 HV0227                          STATION DESCRIPTION
 HV0227
 HV0227'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0227'2.4 MI SE FROM CAMBRIDGE.
 HV0227'ABOUT 2.4 MILES SOUTHEAST ALONG U.S. HIGHWAY 50 FROM THE SOUTH
 HV0227'END OF THE HIGHWAY BRIDGE OVER THE CHOPTANK RIVER AT CAMBRIDGE,
 HV0227'89 FEET SOUTHWEST OF THE CENTER LINE OF THE SOUTHWEST LANES
 HV0227'OF THE HIGHWAY, 88 FEET SOUTHEAST OF THE CENTER OF A METAL
 HV0227'GATE IN A FENCE AROUND THE DELMARVA POWER AND LIGHT COMPANY
 HV0227'JACKTOWN STATION, 37 FEET WEST OF A POWER POLE WHICH BEARS A
 HV0227'STREET LIGHT, 2.3 FEET NORTH OF THE EAST CORNER POST IN THE
 HV0227'FENCE, 1 1/2 FEET NORTHEAST OF THE FENCE, ABOUT 2 1/2 FEET
 HV0227'BELOW THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A COPPER COATED
 HV0227'ROD WHICH IS 4 INCHES BELOW THE SURFACE OF THE GROUND AND IS
 HV0227'PROTECTED BY A 6-INCH METAL PIPE WHICH IS 3 INCHES BELOW
 HV0227'THE GROUND.  THE ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 77 FEET.
 HV0227
 HV0227                          STATION RECOVERY (2001)
 HV0227
 HV0227'RECOVERY NOTE BY US POWER SQUADRON 2001 (ELW)
 HV0227'RECOVERED IN GOOD CONDITION.
 HV0227
 HV0227                          STATION RECOVERY (2001)
 HV0227
 HV0227'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0227'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0227
 HV0227                          STATION RECOVERY (2004)
 HV0227
 HV0227'RECOVERY NOTE BY US POWER SQUADRON 2004 (JKW)
 HV0227'REFERENCED POWER POLE IS 343765-00053.  THE MARK IS NE OF THE
 HV0227'REFERENCED FENCE WHICH BEARS A STANDARD WITNESS SIGN, ABOUT 5 INCHES
 HV0227'BELOW GROUND LEVEL AND OBSCURED BY LARGE EVERGREENS.
 HV0227
 HV0227                          STATION RECOVERY (2005)
 HV0227
 HV0227'RECOVERY NOTE BY US POWER SQUADRON 2005
 HV0227'THIS MARK IS 5 INCHES UNDER THE SURFACE. IT IS WEST OF THE DRIVEWAY TO
 HV0227'BAYSIDE ANIMAL HOSPITAL, BEHIND A ROW OF CEDAR TREES, CLOSE TO THE
 HV0227'FENCE.THE POLE MENTIONED IN THE GIVEN DIRECTIONS IS NUMBER 6715, AND
 HV0227'HAS A GUY WIRE GOING EAST.
 HV0227
 HV0227                          STATION RECOVERY (2007)
 HV0227
 HV0227'RECOVERY NOTE BY US POWER SQUADRON 2007 (NNH)
 HV0227'8 INCHES BELOW SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6537 ***********************************************************************
 JV6537  DESIGNATION -  G 121 RESET
 JV6537  PID         -  JV6537
 JV6537  STATE/COUNTY-  MD/BALTIMORE
 JV6537  COUNTRY     -  US
 JV6537  USGS QUAD   -  RELAY (2016)
 JV6537
 JV6537                         *CURRENT SURVEY CONTROL
 JV6537  ______________________________________________________________________
 JV6537* NAD 83(1986) POSITION- 39 14 30.8    (N) 076 38 27.9    (W)   HD_HELD2
 JV6537* NAVD 88 ORTHO HEIGHT -    41.03  (meters)      134.6   (feet) RESET
 JV6537  ______________________________________________________________________
 JV6537  GEOID HEIGHT    -        -32.717 (meters)                     GEOID18
 JV6537  VERT ORDER      -  THIRD
 JV6537
 JV6537.The horizontal coordinates were established by autonomous hand held GPS
 JV6537.observations and have an estimated accuracy of +/- 10 meters.
 JV6537
 JV6537.The orthometric height was computed from unverified reset data.
 JV6537
 JV6537.No vertical observational check was made to the station.
 JV6537
 JV6537.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6537.GEOID18 height accuracy estimate available here.
 JV6537
 JV6537.Click photographs - Photos may exist for this station.
 JV6537
 JV6537;                    North         East    Units  Estimated Accuracy
 JV6537;SPC MD       -   174,920.      430,985.      MT  (+/- 10 meters HH2 GPS)
 JV6537
 JV6537_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5837644903(NAD 83)
 JV6537
 JV6537                          SUPERSEDED SURVEY CONTROL
 JV6537
 JV6537  NGVD 29 (11/18/05)   41.27   (m)          135.4    (f) RESET       3  
 JV6537
 JV6537.Superseded values are not recommended for survey control.
 JV6537
 JV6537.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6537.See file dsdata.pdf to determine how the superseded data were derived.
 JV6537
 JV6537_MARKER: DV = VERTICAL CONTROL DISK
 JV6537_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6537_SP_SET: STEPS
 JV6537_STAMPING: G 121 RESET 1984
 JV6537_MARK LOGO: NGS
 JV6537_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6537_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6537+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2003
 JV6537
 JV6537  HISTORY     - Date     Condition        Report By
 JV6537  HISTORY     - 1984     MONUMENTED       NGS
 JV6537  HISTORY     - 20030923 GOOD             USPSQD
 JV6537
 JV6537                          STATION DESCRIPTION
 JV6537
 JV6537'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 JV6537'IN BALTIMORE.
 JV6537'FROM THE INTERSECTION OF INTERSTATE HIGHWAY 695 AND STATE HIGHWAY 648
 JV6537'(ANNAPOLIS BALTIMORE BOULEVARD) IN THE SOUTH PART OF BALTIMORE, GO
 JV6537'NORTH ON STATE HIGHWAY 648 FOR 4.0 KM (2.50 MI) TO THE MARK ON THE
 JV6537'RIGHT, 7.6 M (24.9 FT) EAST FROM THE CENTER OF THE ROAD 5.6 M
 JV6537'(18.4 FT) WEST FROM THE WEST ENTRANCE TO HOUSE AT 3911 ANNAPOLIS
 JV6537'BOULEVARD, 9.9 M (32.5 FT) SOUTH FROM A POWERLINE POLE NUMBERED
 JV6537'46119, 16.3 M (53.5 FT) NORTH FROM THE CENTER OF TENNESSEE AVENUE AND
 JV6537'0.6 M (2.0 FT) NORTH FROM THE TOP LANDING OF 6 STEPS.
 JV6537'THE MARK IS 1.0 M ABOVE HWY 648.
 JV6537
 JV6537                          STATION RECOVERY (2003)
 JV6537
 JV6537'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV6537'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 10 FEET SOUTHEAST
 JV6537'OF A --NO STOPPING ANY TIME-- SIGN POST AND 8 FEET EAST OF THE EDGE OF
 JV6537'THE CURB.  NOTE-- THERE ARE NOW FOUR STEPS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0826 ***********************************************************************
 HV0826  DESIGNATION -  G 123
 HV0826  PID         -  HV0826
 HV0826  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0826  COUNTRY     -  US
 HV0826  USGS QUAD   -  BRANDYWINE (2016)
 HV0826
 HV0826                         *CURRENT SURVEY CONTROL
 HV0826  ______________________________________________________________________
 HV0826* NAD 83(1986) POSITION- 38 42 33.0    (N) 076 51 09.3    (W)   HD_HELD2
 HV0826* NAVD 88 ORTHO HEIGHT -    70.718 (meters)      232.01  (feet) ADJUSTED
 HV0826  ______________________________________________________________________
 HV0826  GEOID HEIGHT    -        -32.852 (meters)                     GEOID18
 HV0826  DYNAMIC HEIGHT  -         70.678 (meters)      231.88  (feet) COMP
 HV0826  MODELED GRAVITY -    980,051.3   (mgal)                       NAVD 88
 HV0826
 HV0826  VERT ORDER      -  FIRST     CLASS II
 HV0826
 HV0826.The horizontal coordinates were established by autonomous hand held GPS
 HV0826.observations and have an estimated accuracy of +/- 10 meters.
 HV0826
 HV0826.The orthometric height was determined by differential leveling and
 HV0826.adjusted by the NATIONAL GEODETIC SURVEY
 HV0826.in June 1991.
 HV0826
 HV0826.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0826.GEOID18 height accuracy estimate available here.
 HV0826
 HV0826.Click photographs - Photos may exist for this station.
 HV0826
 HV0826.The dynamic height is computed by dividing the NAVD 88
 HV0826.geopotential number by the normal gravity value computed on the
 HV0826.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0826.degrees latitude (g = 980.6199 gals.).
 HV0826
 HV0826.The modeled gravity was interpolated from observed gravity values.
 HV0826
 HV0826;                    North         East    Units  Estimated Accuracy
 HV0826;SPC MD       -   115,732.      412,822.      MT  (+/- 10 meters HH2 GPS)
 HV0826
 HV0826_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3892086132(NAD 83)
 HV0826
 HV0826                          SUPERSEDED SURVEY CONTROL
 HV0826
 HV0826  NGVD 29 (11/26/84)   70.944  (m)          232.76   (f) ADJUSTED    1 2
 HV0826
 HV0826.Superseded values are not recommended for survey control.
 HV0826
 HV0826.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0826.See file dsdata.pdf to determine how the superseded data were derived.
 HV0826
 HV0826_MARKER: DB = BENCH MARK DISK
 HV0826_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0826+WITH SETTING: INTO GROUND
 HV0826_STAMPING: G 123 1971
 HV0826_MARK LOGO: CGS
 HV0826_PROJECTION: RECESSED 10 CENTIMETERS
 HV0826_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0826+STABILITY: SURFACE MOTION
 HV0826_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0826+SATELLITE: SATELLITE OBSERVATIONS - August 16, 2004
 HV0826
 HV0826  HISTORY     - Date     Condition        Report By
 HV0826  HISTORY     - 1971     MONUMENTED       NGS
 HV0826  HISTORY     - 1975     GOOD             NGS
 HV0826  HISTORY     - 20040816 GOOD             GEOCAC
 HV0826
 HV0826                          STATION DESCRIPTION
 HV0826
 HV0826'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0826'1 MI NE FROM TB.
 HV0826'ABOUT 1.0 MILE NORTHEAST ALONG U.S. HIGHWAY 301 FROM THE INTERSECTION
 HV0826'OF STATE HIGHWAY 381 AT T.B., ALSO ABOUT 2.35 MILES SOUTHWEST ALONG
 HV0826'U.S. HIGHWAY 301 FROM THE JUNCTION OF SURRATTS ROAD AT CHELTENHAM,
 HV0826'177 FEET SE OF THE CENTER OF THE INTERSECTION OF MISSOURI AVENUE,
 HV0826'23 FEET SOUTHWEST OF THE CENTER LINE OF MISSOURI AVENUE, 5 1/2
 HV0826'FEET NORTHWEST OF AN 18-INCH OAK TREE, 1 1/2 FEET SOUTHEAST OF
 HV0826'POWER LINE POLE 6, AND IS A DISK ON TOP OF A FOUR-FOOT LENGTH
 HV0826'OF COPPER COATED STEEL ROD ATTACHED TO A BASE PLATE WHICH IS
 HV0826'PROTECTED BY A 4-INCH PIPE THAT PROJECTS 1 INCH ABOVE THE LEVEL
 HV0826'OF THE GROUND, THE DISK IS ABOUT 4-INCH BELOW THE SURFACE OF
 HV0826'THE GROUND.
 HV0826
 HV0826                          STATION RECOVERY (1975)
 HV0826
 HV0826'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0826'RECOVERED IN GOOD CONDITION.
 HV0826
 HV0826                          STATION RECOVERY (2004)
 HV0826
 HV0826'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV0826'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0429 ***********************************************************************
 HV0429  DESIGNATION -  G 124
 HV0429  PID         -  HV0429
 HV0429  STATE/COUNTY-  MD/DORCHESTER
 HV0429  COUNTRY     -  US
 HV0429  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV0429
 HV0429                         *CURRENT SURVEY CONTROL
 HV0429  ______________________________________________________________________
 HV0429* NAD 83(1986) POSITION- 38 29 18.0    (N) 076 15 44.6    (W)   HD_HELD2
 HV0429* NAVD 88 ORTHO HEIGHT -     3.067 (meters)       10.06  (feet) ADJUSTED
 HV0429  ______________________________________________________________________
 HV0429  GEOID HEIGHT    -        -34.699 (meters)                     GEOID18
 HV0429  DYNAMIC HEIGHT  -          3.065 (meters)       10.06  (feet) COMP
 HV0429  MODELED GRAVITY -    980,028.3   (mgal)                       NAVD 88
 HV0429
 HV0429  VERT ORDER      -  FIRST     CLASS II
 HV0429
 HV0429.The horizontal coordinates were established by autonomous hand held GPS
 HV0429.observations and have an estimated accuracy of +/- 10 meters.
 HV0429
 HV0429.The orthometric height was determined by differential leveling and
 HV0429.adjusted by the NATIONAL GEODETIC SURVEY
 HV0429.in June 1991.
 HV0429
 HV0429.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0429.GEOID18 height accuracy estimate available here.
 HV0429
 HV0429.Click photographs - Photos may exist for this station.
 HV0429
 HV0429.The dynamic height is computed by dividing the NAVD 88
 HV0429.geopotential number by the normal gravity value computed on the
 HV0429.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0429.degrees latitude (g = 980.6199 gals.).
 HV0429
 HV0429.The modeled gravity was interpolated from observed gravity values.
 HV0429
 HV0429;                    North         East    Units  Estimated Accuracy
 HV0429;SPC MD       -    91,468.      464,352.      MT  (+/- 10 meters HH2 GPS)
 HV0429
 HV0429_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8990260753(NAD 83)
 HV0429
 HV0429                          SUPERSEDED SURVEY CONTROL
 HV0429
 HV0429  NGVD 29 (11/26/84)    3.299  (m)           10.82   (f) ADJUSTED    1 2
 HV0429
 HV0429.Superseded values are not recommended for survey control.
 HV0429
 HV0429.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0429.See file dsdata.pdf to determine how the superseded data were derived.
 HV0429
 HV0429_MARKER: DB = BENCH MARK DISK
 HV0429_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0429_SP_SET: ABUTMENT
 HV0429_STAMPING: G 124 1971
 HV0429_MARK LOGO: CGS
 HV0429_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0429
 HV0429  HISTORY     - Date     Condition        Report By
 HV0429  HISTORY     - 1971     MONUMENTED       NGS
 HV0429  HISTORY     - 20060208 MARK NOT FOUND   USPSQD
 HV0429
 HV0429                          STATION DESCRIPTION
 HV0429
 HV0429'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0429'2.8 MI SW FROM MADISON.
 HV0429'ABOUT 2.8 MILES SOUTHWEST ALONG STATE HIGHWAY 16 FROM THE GETHSEMANE
 HV0429'METHODIST CHURCH AT MADISON, 17 1/2 FEET NORTHEAST OF THE CNETER
 HV0429'LINE OF THE HIGHWAY, SET IN THE TOP OF THE NORTHEAST END OF THE
 HV0429'SOUTHEAST CONCRETE ABUTMENT OF THE 175-FOOT LONG HIGHWAY BRIDGE OVER
 HV0429'THE STEWART CANAL, 5.4 FEET NORTHWEST OF THE SOUTHEAST END OF THE
 HV0429'NORTHEAST CONCRETE GUARDRAIL ON THE BRIDGE, AND ABOUT 1 FOOT
 HV0429'ABOVE THE LEVEL OF THE HIGHWAY.
 HV0429
 HV0429                          STATION RECOVERY (2006)
 HV0429
 HV0429'RECOVERY NOTE BY US POWER SQUADRON 2006
 HV0429'THERE IS A NEW BRIDGE AT THIS SITE, 2005 MARKER 0900300. THERE IS A
 HV0429'REPLACEMENT SHA DISC WITH A TRIANGLE WITH A DOT INSIDE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0521 ***********************************************************************
 JV0521  DESIGNATION -  G 125
 JV0521  PID         -  JV0521
 JV0521  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0521  COUNTRY     -  US
 JV0521  USGS QUAD   -  GIBSON ISLAND (2017)
 JV0521
 JV0521                         *CURRENT SURVEY CONTROL
 JV0521  ______________________________________________________________________
 JV0521* NAD 83(1986) POSITION- 39 00 51.1    (N) 076 29 25.5    (W)   HD_HELD2
 JV0521* NAVD 88 ORTHO HEIGHT -    39.285 (meters)      128.89  (feet) ADJUSTED
 JV0521  ______________________________________________________________________
 JV0521  GEOID HEIGHT    -        -33.287 (meters)                     GEOID18
 JV0521  DYNAMIC HEIGHT  -         39.263 (meters)      128.82  (feet) COMP
 JV0521  MODELED GRAVITY -    980,074.3   (mgal)                       NAVD 88
 JV0521
 JV0521  VERT ORDER      -  FIRST     CLASS II
 JV0521
 JV0521.The horizontal coordinates were established by autonomous hand held GPS
 JV0521.observations and have an estimated accuracy of +/- 10 meters.
 JV0521
 JV0521.The orthometric height was determined by differential leveling and
 JV0521.adjusted by the NATIONAL GEODETIC SURVEY
 JV0521.in June 1991.
 JV0521
 JV0521.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0521.GEOID18 height accuracy estimate available here.
 JV0521
 JV0521.Click photographs - Photos may exist for this station.
 JV0521
 JV0521.The dynamic height is computed by dividing the NAVD 88
 JV0521.geopotential number by the normal gravity value computed on the
 JV0521.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0521.degrees latitude (g = 980.6199 gals.).
 JV0521
 JV0521.The modeled gravity was interpolated from observed gravity values.
 JV0521
 JV0521;                    North         East    Units  Estimated Accuracy
 JV0521;SPC MD       -   149,705.      444,132.      MT  (+/- 10 meters HH2 GPS)
 JV0521
 JV0521_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7096419408(NAD 83)
 JV0521
 JV0521                          SUPERSEDED SURVEY CONTROL
 JV0521
 JV0521  NGVD 29 (11/26/84)   39.528  (m)          129.68   (f) ADJUSTED    1 2
 JV0521
 JV0521.Superseded values are not recommended for survey control.
 JV0521
 JV0521.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0521.See file dsdata.pdf to determine how the superseded data were derived.
 JV0521
 JV0521_MARKER: DB = BENCH MARK DISK
 JV0521_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0521_SP_SET: BRIDGE
 JV0521_STAMPING: G 125 1971
 JV0521_MARK LOGO: CGS
 JV0521_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0521_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0521
 JV0521  HISTORY     - Date     Condition        Report By
 JV0521  HISTORY     - 1971     MONUMENTED       NGS
 JV0521  HISTORY     - 19911210 GOOD             MDSHA
 JV0521
 JV0521                          STATION DESCRIPTION
 JV0521
 JV0521'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0521'1.6 MI NW FROM ANNAPOLIS.
 JV0521'ABOUT 1.6 MILES NORTHWEST ALONG STATE HIGHWAY 450 FROM THE NORTHEAST
 JV0521'END OF THE HIGHWAY BRIDGE OVER THE SEVERN RIVER AT ANNAPOLIS, SET
 JV0521'IN THE TOP OF THE BRIDGE FLOOR AND WALKWAY DIRECTLY OVER THE
 JV0521'SOUTHWEST END OF THE SOUTHEAST CONCRETE ABUTMENT FOR THE SOUTHEAST
 JV0521'BOUND LANE OF STATE HIGHWAY 2 OVERPASS OVER U.S. HIGHWAY 301 AND
 JV0521'THE NORTHWEST BOUND LANES OF STATE HIGHWAY 2 (TOP BRIDGE OF A DOUBLE
 JV0521'DECK BRIDGE WHERE THE NORTHWEST BOUND LANES OF HIGHWAY 2 PASSES
 JV0521'UNDER U.S. HIGHWAY 301 AND U.S. 301 PASSES UNDER THE SOUTHEAST
 JV0521'BOUND LANE OF STATE HIGHWAY 2), 16 FEET SOUTHWEST OF THE CENTER
 JV0521'LINE OF THE HIGHWAY, 18 FEET NORTHEAST OF THE SOUTHEAST END
 JV0521'OF THE BRIDGE AND 0.8 FOOT ABOVE THE LEVEL OF THE BRIDGE FLOOR.
 JV0521
 JV0521                          STATION RECOVERY (1991)
 JV0521
 JV0521'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV0521'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0299 ***********************************************************************
 HV0299  DESIGNATION -  G 126
 HV0299  PID         -  HV0299
 HV0299  STATE/COUNTY-  MD/QUEEN ANNES
 HV0299  COUNTRY     -  US
 HV0299  USGS QUAD   -  KENT ISLAND (2016)
 HV0299
 HV0299                         *CURRENT SURVEY CONTROL
 HV0299  ______________________________________________________________________
 HV0299* NAD 83(1986) POSITION- 38 59 04.4    (N) 076 20 23.7    (W)   HD_HELD2
 HV0299* NAVD 88 ORTHO HEIGHT -     5.970 (meters)       19.59  (feet) ADJUSTED
 HV0299  ______________________________________________________________________
 HV0299  GEOID HEIGHT    -        -33.547 (meters)                     GEOID18
 HV0299  DYNAMIC HEIGHT  -          5.967 (meters)       19.58  (feet) COMP
 HV0299  MODELED GRAVITY -    980,081.5   (mgal)                       NAVD 88
 HV0299
 HV0299  VERT ORDER      -  FIRST     CLASS II
 HV0299
 HV0299.The horizontal coordinates were established by autonomous hand held GPS
 HV0299.observations and have an estimated accuracy of +/- 10 meters.
 HV0299
 HV0299.The orthometric height was determined by differential leveling and
 HV0299.adjusted by the NATIONAL GEODETIC SURVEY
 HV0299.in June 1991.
 HV0299
 HV0299.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0299.GEOID18 height accuracy estimate available here.
 HV0299
 HV0299.Click photographs - Photos may exist for this station.
 HV0299
 HV0299.The dynamic height is computed by dividing the NAVD 88
 HV0299.geopotential number by the normal gravity value computed on the
 HV0299.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0299.degrees latitude (g = 980.6199 gals.).
 HV0299
 HV0299.The modeled gravity was interpolated from observed gravity values.
 HV0299
 HV0299;                    North         East    Units  Estimated Accuracy
 HV0299;SPC MD       -   146,498.      457,190.      MT  (+/- 10 meters HH2 GPS)
 HV0299
 HV0299_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8394615916(NAD 83)
 HV0299
 HV0299                          SUPERSEDED SURVEY CONTROL
 HV0299
 HV0299  NGVD 29 (11/26/84)    6.209  (m)           20.37   (f) ADJUSTED    1 2
 HV0299
 HV0299.Superseded values are not recommended for survey control.
 HV0299
 HV0299.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0299.See file dsdata.pdf to determine how the superseded data were derived.
 HV0299
 HV0299_MARKER: DB = BENCH MARK DISK
 HV0299_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV0299_SP_SET: BRIDGE ABUTMENT
 HV0299_STAMPING: G 126 1971
 HV0299_MARK LOGO: CGS
 HV0299_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0299_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0299_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0299+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2005
 HV0299
 HV0299  HISTORY     - Date     Condition        Report By
 HV0299  HISTORY     - 1971     MONUMENTED       NGS
 HV0299  HISTORY     - 19910301 GOOD             MDSHA
 HV0299  HISTORY     - 20000319 GOOD             USPSQD
 HV0299  HISTORY     - 20051215 GOOD             USPSQD
 HV0299
 HV0299                          STATION DESCRIPTION
 HV0299
 HV0299'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0299'1.2 MI W FROM STEVENSVILLE.
 HV0299'ABOUT 1.25 MILES WEST ALONG U.S. HIGHWAY 301 AND 50 FROM THE
 HV0299'INTERSECTION OF STATE HIGHWAY 8 AT STEVENSVILLE, SET ON THE TOP
 HV0299'OF (INSIDE THE CONCRETE GUARD RAIL) THE SOUTHWEST END OF THE
 HV0299'SOUTHEAST CONCRETE ABUTMENT OF THE LARGE HIGHWAY BRIDGE (UNDER
 HV0299'CONSTRUCTION IN 1971) OVER CHESAPEAKE BAY, 23.6 FEET NORTHWEST OF
 HV0299'THE SOUTHEAST END OF THE SOUTHWEST CONCRETE GUARD RAIL, 19 FEET
 HV0299'SOUTHWEST OF THE CENTER LINE OF THE BRIDGE AND 1 FOOT ABOVE THE
 HV0299'LEVEL OF THE HIGHWAY.  NOTE-- THIS BRIDGE IS UNDER CONSTRUCTION
 HV0299'IN 1971.  IT WILL BE THE NORTHEAST ONE OF TWO BRIDGES OVER THE
 HV0299'CHESAPEAKE BAY UPON ITS COMPLETION.
 HV0299
 HV0299                          STATION RECOVERY (1991)
 HV0299
 HV0299'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 HV0299'RECOVERED IN GOOD CONDITION.
 HV0299
 HV0299                          STATION RECOVERY (2000)
 HV0299
 HV0299'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 HV0299'ON 50/301 WESTBOUND, ABOUT 0.6 MI W OF THE RTE 8 OVERPASS AT
 HV0299'STEVENSVILLE,  SET ON THE TOP OF THE SW END OF THE SE CONCRETE
 HV0299'ABUTMENT OF THE NORTHERN HWY BRIDGE OVER THE CHESAPEAKE BAY, 23.6 FT
 HV0299'NW OF THE SE END OF THE SW CONCRETE GUARD RAIL, 19 FT SW OF THE
 HV0299'CENTERLINE OF THE BRIDGE AND 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
 HV0299
 HV0299                          STATION RECOVERY (2005)
 HV0299
 HV0299'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV0299'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0105 ***********************************************************************
 HV0105  DESIGNATION -  G 127
 HV0105  PID         -  HV0105
 HV0105  STATE/COUNTY-  MD/TALBOT
 HV0105  COUNTRY     -  US
 HV0105  USGS QUAD   -  EASTON (2016)
 HV0105
 HV0105                         *CURRENT SURVEY CONTROL
 HV0105  ______________________________________________________________________
 HV0105* NAD 83(1986) POSITION- 38 46 32.91   (N) 076 03 35.20   (W)   HD_HELD1
 HV0105* NAVD 88 ORTHO HEIGHT -    16.256 (meters)       53.33  (feet) ADJUSTED
 HV0105  ______________________________________________________________________
 HV0105  GEOID HEIGHT    -        -34.691 (meters)                     GEOID18
 HV0105  DYNAMIC HEIGHT  -         16.246 (meters)       53.30  (feet) COMP
 HV0105  MODELED GRAVITY -    980,036.1   (mgal)                       NAVD 88
 HV0105
 HV0105  VERT ORDER      -  FIRST     CLASS II
 HV0105
 HV0105.The horizontal coordinates were determined by differentially corrected
 HV0105.hand held GPS observations or other comparable positioning techniques
 HV0105.and have an estimated accuracy of +/- 3 meters.
 HV0105
 HV0105.The orthometric height was determined by differential leveling and
 HV0105.adjusted by the NATIONAL GEODETIC SURVEY
 HV0105.in June 1991.
 HV0105
 HV0105.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0105.GEOID18 height accuracy estimate available here.
 HV0105
 HV0105.Click photographs - Photos may exist for this station.
 HV0105
 HV0105.The dynamic height is computed by dividing the NAVD 88
 HV0105.geopotential number by the normal gravity value computed on the
 HV0105.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0105.degrees latitude (g = 980.6199 gals.).
 HV0105
 HV0105.The modeled gravity was interpolated from observed gravity values.
 HV0105
 HV0105;                    North         East    Units  Estimated Accuracy
 HV0105;SPC MD       -   123,539.9     481,699.1     MT  (+/- 3 meters HH1 GPS) 
 HV0105
 HV0105_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0794192431(NAD 83)
 HV0105
 HV0105                          SUPERSEDED SURVEY CONTROL
 HV0105
 HV0105  NGVD 29 (11/26/84)   16.492  (m)           54.11   (f) ADJUSTED    1 2
 HV0105
 HV0105.Superseded values are not recommended for survey control.
 HV0105
 HV0105.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0105.See file dsdata.pdf to determine how the superseded data were derived.
 HV0105
 HV0105_MARKER: DB = BENCH MARK DISK
 HV0105_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV0105+WITH SETTING: PAVEMENT
 HV0105_SP_SET: BASE
 HV0105_STAMPING: G 127 1971
 HV0105_MARK LOGO: CGS
 HV0105_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0105_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0105+STABILITY: SURFACE MOTION
 HV0105_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0105+SATELLITE: SATELLITE OBSERVATIONS - February 22, 2002
 HV0105
 HV0105  HISTORY     - Date     Condition        Report By
 HV0105  HISTORY     - 1971     MONUMENTED       NGS
 HV0105  HISTORY     - 19991007 GOOD             MDSHA
 HV0105  HISTORY     - 20020222 GOOD             USPSQD
 HV0105  HISTORY     - 20051109 GOOD             USPSQD
 HV0105
 HV0105                          STATION DESCRIPTION
 HV0105
 HV0105'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0105'AT EASTON.
 HV0105'AT EASTON, ABOUT 0.2 MILE NORTH ALONG U.S. HIGHWAY 50 FROM THE
 HV0105'INTERSECTION OF STATE HIGHWAY 331 (DOVER ROAD), SET IN THE TOP OF
 HV0105'THE NORTH SIDE OF A CONCRETE BASE SUPPORTING AN ANTENNA, 109.7
 HV0105'FEET EAST OF THE CENTER LINE OF THE NEAR LANES OF THE HIGHWAY, 8
 HV0105'FEET SOUTHEAST OF THE SOUTHWEST CORNER OF AN OFFICE BUILDING, 4
 HV0105'FEET SOUTH OF THE SOUTH SIDE OF THE BUILDING AND 3 INCHES ABOVE
 HV0105'THE LEVEL OF THE BLACKTOP.  NOTE-- THE PARTY WAS INFORMED THAT
 HV0105'THE CONCRETE BASE FOR ANTENNA IS 8 FEET IN THE GROUND.
 HV0105
 HV0105                          STATION RECOVERY (1999)
 HV0105
 HV0105'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HV0105'RECOVERED AS DESCRIBED.
 HV0105
 HV0105                          STATION RECOVERY (2002)
 HV0105
 HV0105'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0105'REFERENCED ANTENNA HAS BEEN MOVED 12.8 FT W OF THE MARK. OLD ANTENNA
 HV0105'BASE WITH MARK REMAINS. BUILDING NOW OCCUPIED BY MD SHA.
 HV0105
 HV0105                          STATION RECOVERY (2005)
 HV0105
 HV0105'RECOVERY NOTE BY US POWER SQUADRON 2005 (AEM)
 HV0105'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0541 ***********************************************************************
 HV0541  DESIGNATION -  G 128
 HV0541  PID         -  HV0541
 HV0541  STATE/COUNTY-  MD/ST MARYS
 HV0541  COUNTRY     -  US
 HV0541  USGS QUAD   -  LEONARDTOWN (2016)
 HV0541
 HV0541                         *CURRENT SURVEY CONTROL
 HV0541  ______________________________________________________________________
 HV0541* NAD 83(1986) POSITION- 38 18 48.     (N) 076 40 07.     (W)   SCALED
 HV0541* NAVD 88 ORTHO HEIGHT -    28.895 (meters)       94.80  (feet) ADJUSTED
 HV0541  ______________________________________________________________________
 HV0541  GEOID HEIGHT    -        -33.805 (meters)                     GEOID18
 HV0541  DYNAMIC HEIGHT  -         28.878 (meters)       94.74  (feet) COMP
 HV0541  MODELED GRAVITY -    980,035.2   (mgal)                       NAVD 88
 HV0541
 HV0541  VERT ORDER      -  FIRST     CLASS II
 HV0541
 HV0541.The horizontal coordinates were scaled from a map and have
 HV0541.an estimated accuracy of +/- 6 seconds.
 HV0541
 HV0541.The orthometric height was determined by differential leveling and
 HV0541.adjusted by the NATIONAL GEODETIC SURVEY
 HV0541.in June 1991.
 HV0541
 HV0541.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0541.GEOID18 height accuracy estimate available here.
 HV0541
 HV0541.Click photographs - Photos may exist for this station.
 HV0541
 HV0541.The dynamic height is computed by dividing the NAVD 88
 HV0541.geopotential number by the normal gravity value computed on the
 HV0541.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0541.degrees latitude (g = 980.6199 gals.).
 HV0541
 HV0541.The modeled gravity was interpolated from observed gravity values.
 HV0541
 HV0541;                    North         East    Units  Estimated Accuracy
 HV0541;SPC MD       -    71,840.      428,980.      MT  (+/- 180 meters Scaled)
 HV0541
 HV0541_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH541418(NAD 83)
 HV0541
 HV0541                          SUPERSEDED SURVEY CONTROL
 HV0541
 HV0541  NGVD 29 (11/26/84)   29.136  (m)           95.59   (f) ADJUSTED    1 2
 HV0541
 HV0541.Superseded values are not recommended for survey control.
 HV0541
 HV0541.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0541.See file dsdata.pdf to determine how the superseded data were derived.
 HV0541
 HV0541_MARKER: DB = BENCH MARK DISK
 HV0541_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0541_STAMPING: G 128 1971
 HV0541_MARK LOGO: CGS
 HV0541_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0541_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0541+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2007
 HV0541
 HV0541  HISTORY     - Date     Condition        Report By
 HV0541  HISTORY     - 1971     MONUMENTED       NGS
 HV0541  HISTORY     - 20070315 GOOD             MDSHA
 HV0541
 HV0541                          STATION DESCRIPTION
 HV0541
 HV0541'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0541'2.8 MI NW FROM LEONARDTOWN.
 HV0541'ABOUT 2.8 MILES NORTH AND NORTHWEST ALONG WASHINGTON STREET AND
 HV0541'STATE HIGHWAY 5 FROM THE COURTHOUSE AT LEONARDTOWN, 0.1 MILE
 HV0541'NORTHWEST OF THE JUNCTION OF STATE HIGHWAY 234 AND STATE HIGHWAY
 HV0541'5, 65 FEET WEST OF THE CENTER LINE OF THE SOUTHBOUND LANE OF
 HV0541'STATE HIGHWAY 5, 25 FEET OF THE CENTER LINE OF A BLACK TOP ROAD
 HV0541'LEADING TO A FIELD, 2 FEET NORTH OF A POWER LINE POLE, 1.4 FEET
 HV0541'SOUTH OF A METAL WITNESS POST, 4 FEET ABOVE THE LEVEL OF STATE
 HV0541'HIGHWAY 5, AND IS A DISK ON THE TOP OF A COPPER COATED STEEL ROD
 HV0541'FLUSH WITH THE GROUND AND PROTECTED BY A 4-INCH PIPE THAT PROJECTS
 HV0541'4 INCHES ABOVE THE LEVEL OF THE GROUND.  THE ROD WAS DRIVEN TO A
 HV0541'DEPTH OF 21 FEET.
 HV0541
 HV0541                          STATION RECOVERY (2007)
 HV0541
 HV0541'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 HV0541'THE STATION IS 41.7 FEET WEST OF THE WEST EDGE OF SHOULDER FOR
 HV0541'SOUTHBOUND STATE HIGHWAY 5, 25 FEET SOUTH OF THE CENTER OF A ABANDONED
 HV0541'MACADAM ENTRANCE,1.8 FEET NORTH OF POWER POLE 2057,1.2 FEET EAST OF A
 HV0541'CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0514 ***********************************************************************
 HV0514  DESIGNATION -  G 129
 HV0514  PID         -  HV0514
 HV0514  STATE/COUNTY-  MD/CHARLES
 HV0514  COUNTRY     -  US
 HV0514  USGS QUAD   -  POPES CREEK (2016)
 HV0514
 HV0514                         *CURRENT SURVEY CONTROL
 HV0514  ______________________________________________________________________
 HV0514* NAD 83(1986) POSITION- 38 25 12.     (N) 076 55 01.     (W)   SCALED
 HV0514* NAVD 88 ORTHO HEIGHT -    39.674 (meters)      130.16  (feet) ADJUSTED
 HV0514  ______________________________________________________________________
 HV0514  GEOID HEIGHT    -        -33.453 (meters)                     GEOID18
 HV0514  DYNAMIC HEIGHT  -         39.649 (meters)      130.08  (feet) COMP
 HV0514  MODELED GRAVITY -    980,008.7   (mgal)                       NAVD 88
 HV0514
 HV0514  VERT ORDER      -  FIRST     CLASS II
 HV0514
 HV0514.The horizontal coordinates were scaled from a map and have
 HV0514.an estimated accuracy of +/- 6 seconds.
 HV0514
 HV0514.The orthometric height was determined by differential leveling and
 HV0514.adjusted by the NATIONAL GEODETIC SURVEY
 HV0514.in June 1991.
 HV0514
 HV0514.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0514.GEOID18 height accuracy estimate available here.
 HV0514
 HV0514.Click photographs - Photos may exist for this station.
 HV0514
 HV0514.The dynamic height is computed by dividing the NAVD 88
 HV0514.geopotential number by the normal gravity value computed on the
 HV0514.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0514.degrees latitude (g = 980.6199 gals.).
 HV0514
 HV0514.The modeled gravity was interpolated from observed gravity values.
 HV0514
 HV0514;                    North         East    Units  Estimated Accuracy
 HV0514;SPC MD       -    83,630.      407,250.      MT  (+/- 180 meters Scaled)
 HV0514
 HV0514_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH326541(NAD 83)
 HV0514
 HV0514                          SUPERSEDED SURVEY CONTROL
 HV0514
 HV0514  NGVD 29 (11/26/84)   39.911  (m)          130.94   (f) ADJUSTED    1 2
 HV0514
 HV0514.Superseded values are not recommended for survey control.
 HV0514
 HV0514.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0514.See file dsdata.pdf to determine how the superseded data were derived.
 HV0514
 HV0514_MARKER: DB = BENCH MARK DISK
 HV0514_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0514+WITH SETTING: INTO GROUND
 HV0514_STAMPING: G 129 1971
 HV0514_MARK LOGO: CGS
 HV0514_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0514+STABILITY: SURFACE MOTION
 HV0514
 HV0514  HISTORY     - Date     Condition        Report By
 HV0514  HISTORY     - 1971     MONUMENTED       NGS
 HV0514
 HV0514                          STATION DESCRIPTION
 HV0514
 HV0514'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0514'4.6 MI NE FROM NEWBURG.
 HV0514'ABOUT 0.2 MILE NORTHWEST ALONG STATE HIGHWAY 257 FROM THE POST
 HV0514'OFFICE AT NEWBURG, THENCE 2.2 MILES NORTH ALONG U.S. HIGHWAY
 HV0514'301, THENCE 2.2 MILES EAST ALONG STATE HIGHWAY 234, ON THE
 HV0514'SUMMIT OF A HILL, AT THE SOUTHWEST END OF A CUT, 37 FEET SOUTH
 HV0514'OF THE CENTER LINE OF THE HIGHWAY, 3 FEET SOUTH OF A POWER LINE
 HV0514'POLE, 0.15 MILE EAST OF A DRIVEWAY LEADING NORTH FROM THE
 HV0514'HIGHWAY TO A FARMHOUSE, A DISK ON THE TOP OF A 4 FOOT COPPER
 HV0514'COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK
 HV0514'IS LEVEL WITH THE GROUND AND ENCASED IN A METAL PIPE WHICH
 HV0514'PROJECTS 4 INCHES ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4012 ***********************************************************************
 JV4012  DESIGNATION -  G 13 RESET
 JV4012  PID         -  JV4012
 JV4012  STATE/COUNTY-  MD/CARROLL
 JV4012  COUNTRY     -  US
 JV4012  USGS QUAD   -  WESTMINSTER (2016)
 JV4012
 JV4012                         *CURRENT SURVEY CONTROL
 JV4012  ______________________________________________________________________
 JV4012* NAD 83(1986) POSITION- 39 34 29.83   (N) 076 59 46.22   (W)   HD_HELD1
 JV4012* NAVD 88 ORTHO HEIGHT -   219.65  (meters)      720.6   (feet) RESET
 JV4012  ______________________________________________________________________
 JV4012  GEOID HEIGHT    -        -32.242 (meters)                     GEOID18
 JV4012  VERT ORDER      -  THIRD
 JV4012
 JV4012.The horizontal coordinates were determined by differentially corrected
 JV4012.hand held GPS observations or other comparable positioning techniques
 JV4012.and have an estimated accuracy of +/- 3 meters.
 JV4012
 JV4012.The orthometric height was computed from unverified reset data.
 JV4012
 JV4012.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4012.GEOID18 height accuracy estimate available here.
 JV4012
 JV4012.Click photographs - Photos may exist for this station.
 JV4012
 JV4012;                    North         East    Units  Estimated Accuracy
 JV4012;SPC MD       -   211,836.7     400,328.9     MT  (+/- 3 meters HH1 GPS) 
 JV4012
 JV4012_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2854882486(NAD 83)
 JV4012
 JV4012                          SUPERSEDED SURVEY CONTROL
 JV4012
 JV4012  NGVD 29 (??/??/??)  219.84   (m)          721.3    (f) RESET       3  
 JV4012
 JV4012.Superseded values are not recommended for survey control.
 JV4012
 JV4012.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4012.See file dsdata.pdf to determine how the superseded data were derived.
 JV4012
 JV4012_MARKER: DV = VERTICAL CONTROL DISK
 JV4012_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV4012_SP_SET: CURB
 JV4012_STAMPING: G 13 RESET 1977
 JV4012_MARK LOGO: NGS
 JV4012_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4012_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4012+SATELLITE: SATELLITE OBSERVATIONS - March 21, 2020
 JV4012
 JV4012  HISTORY     - Date     Condition        Report By
 JV4012  HISTORY     - 1977     MONUMENTED       NGS
 JV4012  HISTORY     - 20080128 GOOD             MDSHA
 JV4012  HISTORY     - 20080415 GOOD             GEOCAC
 JV4012  HISTORY     - 20100608 GOOD             NGS
 JV4012  HISTORY     - 20140511 GOOD             RODCON
 JV4012  HISTORY     - 20200321 GOOD             WTBALL
 JV4012
 JV4012                          STATION DESCRIPTION
 JV4012
 JV4012'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 JV4012'AT WESTMINSTER.
 JV4012'LOCATED 100 FEET SOUTH OF THE INTERSECTION OF STATE HIGHWAYS 45
 JV4012'AND 32 AND WEST MAIN STREET, LIBERTY ROAD AND RAILROAD AVE. IN THE
 JV4012'CENTER OF WEST MINISTER. IN THE NORTH CURB FOR A PARKING LOT WHICH
 JV4012'IS CITY OWNED, 81 FEET SOUTHWEST OF A POINT WHERE THE RAILROAD
 JV4012'CROSSES STATE HIGHWAY 32, 46.8 FEET SOUTHEAST OF THE SOUTHEAST CURB
 JV4012'ALONG LIBERTY STREET, 22.5 FEET NORTHWEST OF THE NORTHWEST RAIL OF
 JV4012'THE RAILROAD, 13.3 FEET NORTHEAST OF A POWERLINE LIGHT POLE NUMBERED
 JV4012'33602 AND 1 FOOT NORTHWEST OF THE SOUTHEAST CURB OF THE PARKING LOT.
 JV4012
 JV4012                          STATION RECOVERY (2008)
 JV4012
 JV4012'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV4012'RECOVERED AS DESCRIBED.
 JV4012
 JV4012                          STATION RECOVERY (2008)
 JV4012
 JV4012'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV4012'RECOVERED IN GOOD CONDITION.
 JV4012
 JV4012                          STATION RECOVERY (2010)
 JV4012
 JV4012'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV4012'RECOVERED IN GOOD CONDITION.
 JV4012
 JV4012                          STATION RECOVERY (2014)
 JV4012
 JV4012'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV4012'RECOVERED IN GOOD CONDITION.
 JV4012
 JV4012                          STATION RECOVERY (2020)
 JV4012
 JV4012'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV4012'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0042 ***********************************************************************
 HV0042  DESIGNATION -  G 130
 HV0042  PID         -  HV0042
 HV0042  STATE/COUNTY-  MD/TALBOT
 HV0042  COUNTRY     -  US
 HV0042  USGS QUAD   -  EASTON (2016)
 HV0042
 HV0042                         *CURRENT SURVEY CONTROL
 HV0042  ______________________________________________________________________
 HV0042* NAD 83(1986) POSITION- 38 45 55.     (N) 076 00 30.     (W)   SCALED
 HV0042* NAVD 88 ORTHO HEIGHT -    13.572 (meters)       44.53  (feet) ADJUSTED
 HV0042  ______________________________________________________________________
 HV0042  GEOID HEIGHT    -        -34.798 (meters)                     GEOID18
 HV0042  DYNAMIC HEIGHT  -         13.563 (meters)       44.50  (feet) COMP
 HV0042  MODELED GRAVITY -    980,033.6   (mgal)                       NAVD 88
 HV0042
 HV0042  VERT ORDER      -  FIRST     CLASS I
 HV0042
 HV0042.The horizontal coordinates were scaled from a map and have
 HV0042.an estimated accuracy of +/- 6 seconds.
 HV0042
 HV0042.The orthometric height was determined by differential leveling and
 HV0042.adjusted by the NATIONAL GEODETIC SURVEY
 HV0042.in June 1991.
 HV0042
 HV0042.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0042.GEOID18 height accuracy estimate available here.
 HV0042
 HV0042.Click photographs - Photos may exist for this station.
 HV0042
 HV0042.The dynamic height is computed by dividing the NAVD 88
 HV0042.geopotential number by the normal gravity value computed on the
 HV0042.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0042.degrees latitude (g = 980.6199 gals.).
 HV0042
 HV0042.The modeled gravity was interpolated from observed gravity values.
 HV0042
 HV0042;                    North         East    Units  Estimated Accuracy
 HV0042;SPC MD       -   122,420.      486,180.      MT  (+/- 180 meters Scaled)
 HV0042
 HV0042_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH123912(NAD 83)
 HV0042
 HV0042                          SUPERSEDED SURVEY CONTROL
 HV0042
 HV0042  NGVD 29 (11/26/84)   13.808  (m)           45.30   (f) ADJUSTED    1 1
 HV0042
 HV0042.Superseded values are not recommended for survey control.
 HV0042
 HV0042.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0042.See file dsdata.pdf to determine how the superseded data were derived.
 HV0042
 HV0042_MARKER: DB = BENCH MARK DISK
 HV0042_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0042+WITH SETTING: INTO GROUND
 HV0042_STAMPING: G 130 1971
 HV0042_MARK LOGO: CGS
 HV0042_PROJECTION: PROJECTING 5 CENTIMETERS
 HV0042_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0042+STABILITY: SURFACE MOTION
 HV0042
 HV0042  HISTORY     - Date     Condition        Report By
 HV0042  HISTORY     - 1971     MONUMENTED       NGS
 HV0042  HISTORY     - 20000920 MARK NOT FOUND   MDSHA
 HV0042  HISTORY     - 20020312 MARK NOT FOUND   USPSQD
 HV0042  HISTORY     - 20050608 MARK NOT FOUND   USPSQD
 HV0042
 HV0042                          STATION DESCRIPTION
 HV0042
 HV0042'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV0042'3 MI SE FROM EASTON.
 HV0042'ABOUT 3.05 MILES SOUTHEAST ALONG STATE HIGHWAY 331 FROM THE
 HV0042'INTERSECTION OF U.S. HIGHWAY 50 AT EASTON, 0.75 MILE NORTHWEST
 HV0042'OF THE NORTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHOPTANK
 HV0042'RIVER, AT THE JUNCTION OF A FARM ROAD LEADING NORTHEAST, 47 1/2
 HV0042'FEET SOUTHEAST OF THE CENTER LINE OF THE FARM ROAD, 38.2 FEET
 HV0042'NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 2 FEET SOUTHEAST
 HV0042'OF THE FIRST POWER LINE POLE SOUTHEAST OF THE FARM ROAD, 1.1 FEET
 HV0042'NORTHWEST OF A METAL WITNESS POST, 2 FEET ABOVE THE LEVEL OF THE
 HV0042'HIGHWAY, ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS
 HV0042'ATTACHED TO A METAL BASE PLATE.  THE DISK PROJECTS 1 INCH ABOVE
 HV0042'THE LEVEL OF THE GROUND AND ENCASED IN A 4 INCH STEEL PIPE THAT
 HV0042'PROJECTS 2 INCHES ABOVE THE LEVEL OF THE GROUND.
 HV0042
 HV0042                          STATION RECOVERY (2000)
 HV0042
 HV0042'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV0042'THE MARK WAS SEARCHED FOR AND WHAT APPEARS TO BE THE ROD AND 4 INCH
 HV0042'(10 CM) PROTECTION PIPE WERE RECOVERED.  THE DISK WAS NOT RECOVERED.
 HV0042
 HV0042                          STATION RECOVERY (2002)
 HV0042
 HV0042'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0042'REMAINS OF STATION FOUND 4.2 FT SE OF THE REFERENCED POWER LINE POLE.
 HV0042'STEEL PIPE BENT AND BROKEN, DISK REMOVED FROM TOP OF ROD, BRONZE TUBE
 HV0042'FOR DISK REMAINS. WITNESS POST DOES NOT EXIST. REMAINS OF STATION ARE
 HV0042'86.5 FT SE OF A MARYLAND SHA STATION STAMPED 405-1999. FARM LANE IS
 HV0042'ACROSS FROM MAILBOX NUMBER 30770.
 HV0042
 HV0042                          STATION RECOVERY (2005)
 HV0042
 HV0042'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 HV0042'IRON PIPE AND BRONZE STUD REMAIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1504 ***********************************************************************
 HV1504  DESIGNATION -  G 131
 HV1504  PID         -  HV1504
 HV1504  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1504  COUNTRY     -  US
 HV1504  USGS QUAD   -  BRISTOL (2016)
 HV1504
 HV1504                         *CURRENT SURVEY CONTROL
 HV1504  ______________________________________________________________________
 HV1504* NAD 83(1986) POSITION- 38 49 14.5    (N) 076 39 48.0    (W)   HD_HELD2
 HV1504* NAVD 88 ORTHO HEIGHT -    48.561 (meters)      159.32  (feet) ADJUSTED
 HV1504  ______________________________________________________________________
 HV1504  GEOID HEIGHT    -        -33.178 (meters)                     GEOID18
 HV1504  DYNAMIC HEIGHT  -         48.533 (meters)      159.23  (feet) COMP
 HV1504  MODELED GRAVITY -    980,056.8   (mgal)                       NAVD 88
 HV1504  OBS GRAVITY     -    980,053.9   (mgal)                       GRAV_OBS
 HV1504
 HV1504  VERT ORDER      -  FIRST     CLASS I
 HV1504
 HV1504.The horizontal coordinates were established by autonomous hand held GPS
 HV1504.observations and have an estimated accuracy of +/- 10 meters.
 HV1504
 HV1504.The orthometric height was determined by differential leveling and
 HV1504.adjusted by the NATIONAL GEODETIC SURVEY
 HV1504.in June 1991.
 HV1504
 HV1504.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1504.GEOID18 height accuracy estimate available here.
 HV1504
 HV1504.Click photographs - Photos may exist for this station.
 HV1504
 HV1504.The dynamic height is computed by dividing the NAVD 88
 HV1504.geopotential number by the normal gravity value computed on the
 HV1504.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1504.degrees latitude (g = 980.6199 gals.).
 HV1504
 HV1504.The modeled gravity was interpolated from observed gravity values.
 HV1504
 HV1504.The observed gravity was obtained from relative gravimeter ties
 HV1504.to the IGSN71 gravity network.
 HV1504
 HV1504;                    North         East    Units  Estimated Accuracy
 HV1504;SPC MD       -   128,156.      429,236.      MT  (+/- 10 meters HH2 GPS)
 HV1504
 HV1504_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5560198193(NAD 83)
 HV1504
 HV1504                          SUPERSEDED SURVEY CONTROL
 HV1504
 HV1504  NGVD 29 (11/26/84)   48.798  (m)          160.10   (f) ADJUSTED    1 1
 HV1504
 HV1504.Superseded values are not recommended for survey control.
 HV1504
 HV1504.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1504.See file dsdata.pdf to determine how the superseded data were derived.
 HV1504
 HV1504_MARKER: DB = BENCH MARK DISK
 HV1504_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV1504_STAMPING: G 131 1971
 HV1504_MARK LOGO: CGS
 HV1504_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1504
 HV1504  HISTORY     - Date     Condition        Report By
 HV1504  HISTORY     - 1971     MONUMENTED       NGS
 HV1504
 HV1504                          STATION DESCRIPTION
 HV1504
 HV1504'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1504'2.2 MI E FROM WAYSONS CORNER.
 HV1504'ABOUT 2.25 MILES EAST ALONG STATE HIGHWAY 408 FROM THE JUNCTIN
 HV1504'OF THE NORTH LANES OF STATE HIGHWAY 4 AT WAYSONS CORNER, ON THE
 HV1504'PROPERTY OF THE MT. CALVARY METHODIST CHURCH AND CEMETERY, 73
 HV1504'FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 73.3 FEET SOUTHWEST
 HV1504'OF THE SOUTH CORNER OF THE TOWER FOR THE CHURCH, 26 FEET EAST
 HV1504'OF THE CENTER LINE OF THE DRIVEWAY TO THE CHURCH, 1.2 FEET EAST
 HV1504'OF THE ELEVENTH 4- X 4-INCH WOODEN POST FROM THE WEST END OF
 HV1504'A ROW OF POSTS ON THE EAST SIDE OF THE DRIVEWAY, ABOUT 1 FOOT
 HV1504'ABOVE THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A COPPER
 HV1504'COATED ROD THAT IS LEVEL WITH THE SURFACE OF THE GROUND AND IS
 HV1504'PROTECTED BY A 6-INCH TILE WHICH PROJECTS 1 INCH.  THE ROD WAS
 HV1504'DRIVEN TO REFUSAL AT A DEPTH OF 50 1/2 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1595 ***********************************************************************
 HV1595  DESIGNATION -  G 132
 HV1595  PID         -  HV1595
 HV1595  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1595  COUNTRY     -  US
 HV1595  USGS QUAD   -  DEALE (2016)
 HV1595
 HV1595                         *CURRENT SURVEY CONTROL
 HV1595  ______________________________________________________________________
 HV1595* NAD 83(1986) POSITION- 38 45 40.7    (N) 076 35 49.9    (W)   HD_HELD2
 HV1595* NAVD 88 ORTHO HEIGHT -    31.956 (meters)      104.84  (feet) ADJUSTED
 HV1595  ______________________________________________________________________
 HV1595  GEOID HEIGHT    -        -33.440 (meters)                     GEOID18
 HV1595  DYNAMIC HEIGHT  -         31.937 (meters)      104.78  (feet) COMP
 HV1595  MODELED GRAVITY -    980,051.3   (mgal)                       NAVD 88
 HV1595
 HV1595  VERT ORDER      -  FIRST     CLASS II
 HV1595
 HV1595.The horizontal coordinates were established by autonomous hand held GPS
 HV1595.observations and have an estimated accuracy of +/- 10 meters.
 HV1595
 HV1595.The orthometric height was determined by differential leveling and
 HV1595.adjusted by the NATIONAL GEODETIC SURVEY
 HV1595.in June 1991.
 HV1595
 HV1595.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1595.GEOID18 height accuracy estimate available here.
 HV1595
 HV1595.Click photographs - Photos may exist for this station.
 HV1595
 HV1595.The dynamic height is computed by dividing the NAVD 88
 HV1595.geopotential number by the normal gravity value computed on the
 HV1595.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1595.degrees latitude (g = 980.6199 gals.).
 HV1595
 HV1595.The modeled gravity was interpolated from observed gravity values.
 HV1595
 HV1595;                    North         East    Units  Estimated Accuracy
 HV1595;SPC MD       -   121,587.      435,009.      MT  (+/- 10 meters HH2 GPS)
 HV1595
 HV1595_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6122891500(NAD 83)
 HV1595
 HV1595                          SUPERSEDED SURVEY CONTROL
 HV1595
 HV1595  NGVD 29 (11/26/84)   32.196  (m)          105.63   (f) ADJUSTED    1 2
 HV1595
 HV1595.Superseded values are not recommended for survey control.
 HV1595
 HV1595.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1595.See file dsdata.pdf to determine how the superseded data were derived.
 HV1595
 HV1595_MARKER: DB = BENCH MARK DISK
 HV1595_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV1595+WITH SETTING: INTO GROUND
 HV1595_STAMPING: G 132 1971
 HV1595_MARK LOGO: CGS
 HV1595_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1595+STABILITY: SURFACE MOTION
 HV1595
 HV1595  HISTORY     - Date     Condition        Report By
 HV1595  HISTORY     - 1971     MONUMENTED       NGS
 HV1595  HISTORY     - 1972     GOOD             NGS
 HV1595
 HV1595                          STATION DESCRIPTION
 HV1595
 HV1595'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1595'1.8 MI N FROM FRIENDSHIP.
 HV1595'ABOUT 0.1 MILE WEST ALONG FRIENDSHIP ROAD FROM THE FRIENDSHIP
 HV1595'METHODIST CHURCH AT FRIENDSHIP, THENCE 1.75 MILES NORTH ALONG
 HV1595'STATE HIGHWAY 2, ABOUT 1.35 MILES SOUTH OF THE JUNCTION OF STATE
 HV1595'HIGHWAY 256 (DEALE ROAD), 0.65 MILE NORTH OF THE INTERSECTION
 HV1595'OF STATE HIGHWAY 423, 40 FEET WEST OF THE CENTER LINE OF THE
 HV1595'HIGHWAY, 27 1/2 FEET NORTH OF THE CENTER LINE OF A FARM ROAD,
 HV1595'11.5 FEET NORTH OF THE NORTH CORNER OF A BRICK GATE POST, 6.3
 HV1595'FEET SOUTHWEST OF THE NORTH END OF A PIPE CULVERT UNDER THE FARM
 HV1595'ROAD, 1 FOOT SOUTH OF A METAL WITNESS POST, 1 FOOT BELOW THE
 HV1595'LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4-FOOT COPPER COATED
 HV1595'STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS
 HV1595'FLUSH WITH THE GROUND AND ENCASED IN A 6 INCH STEEL PIPE THAT
 HV1595'PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0956 ***********************************************************************
 HV0956  DESIGNATION -  G 133
 HV0956  PID         -  HV0956
 HV0956  STATE/COUNTY-  MD/CALVERT
 HV0956  COUNTRY     -  US
 HV0956  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV0956
 HV0956                         *CURRENT SURVEY CONTROL
 HV0956  ______________________________________________________________________
 HV0956* NAD 83(1986) POSITION- 38 30 01.     (N) 076 32 27.     (W)   SCALED
 HV0956* NAVD 88 ORTHO HEIGHT -    44.165 (meters)      144.90  (feet) ADJUSTED
 HV0956  ______________________________________________________________________
 HV0956  GEOID HEIGHT    -        -34.027 (meters)                     GEOID18
 HV0956  DYNAMIC HEIGHT  -         44.138 (meters)      144.81  (feet) COMP
 HV0956  MODELED GRAVITY -    980,018.9   (mgal)                       NAVD 88
 HV0956
 HV0956  VERT ORDER      -  FIRST     CLASS II
 HV0956
 HV0956.The horizontal coordinates were scaled from a map and have
 HV0956.an estimated accuracy of +/- 6 seconds.
 HV0956
 HV0956.The orthometric height was determined by differential leveling and
 HV0956.adjusted by the NATIONAL GEODETIC SURVEY
 HV0956.in June 1991.
 HV0956
 HV0956.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0956.GEOID18 height accuracy estimate available here.
 HV0956
 HV0956.Click photographs - Photos may exist for this station.
 HV0956
 HV0956.The dynamic height is computed by dividing the NAVD 88
 HV0956.geopotential number by the normal gravity value computed on the
 HV0956.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0956.degrees latitude (g = 980.6199 gals.).
 HV0956
 HV0956.The modeled gravity was interpolated from observed gravity values.
 HV0956
 HV0956;                    North         East    Units  Estimated Accuracy
 HV0956;SPC MD       -    92,640.      440,050.      MT  (+/- 180 meters Scaled)
 HV0956
 HV0956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH656624(NAD 83)
 HV0956
 HV0956                          SUPERSEDED SURVEY CONTROL
 HV0956
 HV0956  NGVD 29 (11/26/84)   44.409  (m)          145.70   (f) ADJUSTED    1 2
 HV0956
 HV0956.Superseded values are not recommended for survey control.
 HV0956
 HV0956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0956.See file dsdata.pdf to determine how the superseded data were derived.
 HV0956
 HV0956_MARKER: DB = BENCH MARK DISK
 HV0956_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0956+WITH SETTING: INTO GROUND
 HV0956_STAMPING: G 133 1971
 HV0956_MARK LOGO: CGS
 HV0956_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0956+STABILITY: SURFACE MOTION
 HV0956
 HV0956  HISTORY     - Date     Condition        Report By
 HV0956  HISTORY     - 1971     MONUMENTED       NGS
 HV0956
 HV0956                          STATION DESCRIPTION
 HV0956
 HV0956'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0956'3.8 MI SE FROM PRINCE FREDERICK.
 HV0956'ABOUT 3.75 MILES SOUTHEAST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0956'INTERSECTION OF STATE HIGHWAY 231 AT PRINCE FREDERICK, AT THE
 HV0956'JUNCTION OF STATE HIGHWAY 264 LEADING TO BROOMES ISLAND, 146
 HV0956'FEET NORTHWEST OF THE CENTER LINE OF STATE HIGHWAY 264, 144.6
 HV0956'FEET SOUTHEAST OF A FENCE CORNER AT A T IN THE FENCE LINE, 59
 HV0956'FEET SOUTHWEST OF THE CENTER LINE OF STATE HIGHWAY 2 AND 4,
 HV0956'1.1 FEET NORTHEAST OF A STEEL FENCE, 0.7 FOOT SOUTHEAST OF A
 HV0956'METAL WITNESS POST, 1 FOOT BELOW THE LEVEL OF THE HIGHWAY, AND
 HV0956'ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED
 HV0956'TO A METAL BASE PLATE, THE DISK IS FLUSH WITH THE GROUND AND
 HV0956'ENCASED IN A METAL PIPE PROJECTING 2 INCHES ABOVE THE LEVEL OF
 HV0956'THE GROUND.  NOTE-- MARK MAY BE REACHED BY GOING 6.15 MILES NORTH
 HV0956'ALONG STATE HIGHWAY 264 FROM THE POST OFFICE AT BROOMES ISLAND.
 HV0956'NOTE-- THE MARK MAY BE REACHED BY GOING 3.0 MILES NORTHWEST
 HV0956'ALONG STATE HIGHWAY 2 AND 4 FROM THE PO AT ST LEONARD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7957 ***********************************************************************
 HV7957  DESIGNATION -  G 133 RESET
 HV7957  PID         -  HV7957
 HV7957  STATE/COUNTY-  MD/CALVERT
 HV7957  COUNTRY     -  US
 HV7957  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV7957
 HV7957                         *CURRENT SURVEY CONTROL
 HV7957  ______________________________________________________________________
 HV7957* NAD 83(1986) POSITION- 38 30 01.     (N) 076 32 27.     (W)   SCALED
 HV7957* NAVD 88 ORTHO HEIGHT -    46.29  (+/-2cm)      151.9   (feet) VERTCON3
 HV7957  ______________________________________________________________________
 HV7957  GEOID HEIGHT    -        -34.027 (meters)                     GEOID18
 HV7957  VERT ORDER      -  THIRD (See Below)
 HV7957
 HV7957.The horizontal coordinates were scaled from a map and have
 HV7957.an estimated accuracy of +/- 6 seconds.
 HV7957
 HV7957.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7957.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7957
 HV7957.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7957.GEOID18 height accuracy estimate available here.
 HV7957
 HV7957.The vertical order pertains to the NGVD 29 superseded value.
 HV7957
 HV7957.Click photographs - Photos may exist for this station.
 HV7957
 HV7957;                    North         East    Units  Estimated Accuracy
 HV7957;SPC MD       -    92,640.      440,050.      MT  (+/- 180 meters Scaled)
 HV7957
 HV7957_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH656624(NAD 83)
 HV7957
 HV7957                          SUPERSEDED SURVEY CONTROL
 HV7957
 HV7957  NGVD 29 (??/??/??)   46.54   (m)          152.7    (f) RESET       3  
 HV7957
 HV7957.Superseded values are not recommended for survey control.
 HV7957
 HV7957.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7957.See file dsdata.pdf to determine how the superseded data were derived.
 HV7957
 HV7957_MARKER: DV = VERTICAL CONTROL DISK
 HV7957_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7957_STAMPING: G 133 RESET 1975
 HV7957_MARK LOGO: NGS
 HV7957_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV7957_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7957+STABILITY: SURFACE MOTION
 HV7957
 HV7957  HISTORY     - Date     Condition        Report By
 HV7957  HISTORY     - 1975     MONUMENTED       NGS
 HV7957
 HV7957                          STATION DESCRIPTION
 HV7957
 HV7957'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7957'3.7 MILES (6.0 KM) SOUTH ALONG 2 AND 4 FROM JUNCTION 231, 2 AND 4 IN
 HV7957'PRINCE FREDRICK, 75 YARDS NORTHWEST JUNCTION 264, STANDARD DISK
 HV7957'STAMPED G 133 RESET 1975 SET IN TOP 10-INCH ROUND POST FLUSH, 1.3 FEET
 HV7957'(0.4 M) SOUTH WITNESS POST AND 44 FEET (13.4 M) NORTH CENTERLINE
 HV7957'NORTHWEST BOUND LANE 4-2, 24.8 FEET (7.6 M) WEST 12-INCH CEDAR, 3.2
 HV7957'FEET (1.0 M) WEST TELEPHONE POLE 118, 12 FEET (3.7 M) EAST GUY ANCHOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7958 ***********************************************************************
 HV7958  DESIGNATION -  G 133 RESET
 HV7958  PID         -  HV7958
 HV7958  STATE/COUNTY-  MD/CALVERT
 HV7958  COUNTRY     -  US
 HV7958  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV7958
 HV7958                         *CURRENT SURVEY CONTROL
 HV7958  ______________________________________________________________________
 HV7958* NAD 83(1986) POSITION- 38 30 01.     (N) 076 32 27.     (W)   SCALED
 HV7958* NAVD 88 ORTHO HEIGHT -    43.17  (+/-2cm)      141.6   (feet) VERTCON3
 HV7958  ______________________________________________________________________
 HV7958  GEOID HEIGHT    -        -34.027 (meters)                     GEOID18
 HV7958  VERT ORDER      -  THIRD (See Below)
 HV7958
 HV7958.The horizontal coordinates were scaled from a map and have
 HV7958.an estimated accuracy of +/- 6 seconds.
 HV7958
 HV7958.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7958.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7958
 HV7958.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7958.GEOID18 height accuracy estimate available here.
 HV7958
 HV7958.The vertical order pertains to the NGVD 29 superseded value.
 HV7958
 HV7958.Click photographs - Photos may exist for this station.
 HV7958
 HV7958;                    North         East    Units  Estimated Accuracy
 HV7958;SPC MD       -    92,640.      440,050.      MT  (+/- 180 meters Scaled)
 HV7958
 HV7958_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH656624(NAD 83)
 HV7958
 HV7958                          SUPERSEDED SURVEY CONTROL
 HV7958
 HV7958  NGVD 29 (??/??/??)   43.41   (m)          142.4    (f) RESET       3  
 HV7958
 HV7958.Superseded values are not recommended for survey control.
 HV7958
 HV7958.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7958.See file dsdata.pdf to determine how the superseded data were derived.
 HV7958
 HV7958_MARKER: DV = VERTICAL CONTROL DISK
 HV7958_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV7958_SP_SET: CULVERT
 HV7958_STAMPING: G 133 RESET 1979
 HV7958_MARK LOGO: NGS
 HV7958_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7958
 HV7958  HISTORY     - Date     Condition        Report By
 HV7958  HISTORY     - 1979     MONUMENTED       NGS
 HV7958
 HV7958                          STATION DESCRIPTION
 HV7958
 HV7958'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 HV7958'LOCATED 3.7 MILES SOUTH ALONG MD. ROUTE 2 AND 4 FROM THE JUNCTION OF
 HV7958'MD. RTE. 231 IN PRINCE FREDERICK AT THE JUNCTION OF MD. RTE. 264,
 HV7958'60.1 FT. SOUTH OF THE CENTERLINE OF THE SOUTH BOUND LAND OF MD. ROUTE
 HV7958'2 AND 4, 106.5 FT. WEST OF THE CENTERLINE OF MD. ROUTE 264, 1.4 FT.
 HV7958'SOUTHEAST OF THE NORTHWEST CORNER OF THE HEADWALL, 4.1 FT. NORTHWEST
 HV7958'OF THE CENTERLINE OF THE PIPE IN THE HEADWALL AND 3.2 FT. SOUTHEAST OF
 HV7958'A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0323 ***********************************************************************
 HV0323  DESIGNATION -  G 134
 HV0323  PID         -  HV0323
 HV0323  STATE/COUNTY-  MD/ST MARYS
 HV0323  COUNTRY     -  US
 HV0323  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0323
 HV0323                         *CURRENT SURVEY CONTROL
 HV0323  ______________________________________________________________________
 HV0323* NAD 83(1986) POSITION- 38 16 37.     (N) 076 27 54.     (W)   SCALED
 HV0323* NAVD 88 ORTHO HEIGHT -    35.028 (meters)      114.92  (feet) ADJUSTED
 HV0323  ______________________________________________________________________
 HV0323  GEOID HEIGHT    -        -34.446 (meters)                     GEOID18
 HV0323  DYNAMIC HEIGHT  -         35.006 (meters)      114.85  (feet) COMP
 HV0323  MODELED GRAVITY -    980,012.1   (mgal)                       NAVD 88
 HV0323
 HV0323  VERT ORDER      -  FIRST     CLASS II
 HV0323
 HV0323.The horizontal coordinates were scaled from a map and have
 HV0323.an estimated accuracy of +/- 6 seconds.
 HV0323
 HV0323.The orthometric height was determined by differential leveling and
 HV0323.adjusted by the NATIONAL GEODETIC SURVEY
 HV0323.in June 1991.
 HV0323
 HV0323.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0323.GEOID18 height accuracy estimate available here.
 HV0323
 HV0323.Click photographs - Photos may exist for this station.
 HV0323
 HV0323.The dynamic height is computed by dividing the NAVD 88
 HV0323.geopotential number by the normal gravity value computed on the
 HV0323.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0323.degrees latitude (g = 980.6199 gals.).
 HV0323
 HV0323.The modeled gravity was interpolated from observed gravity values.
 HV0323
 HV0323;                    North         East    Units  Estimated Accuracy
 HV0323;SPC MD       -    67,880.      446,810.      MT  (+/- 180 meters Scaled)
 HV0323
 HV0323_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH718375(NAD 83)
 HV0323
 HV0323                          SUPERSEDED SURVEY CONTROL
 HV0323
 HV0323  NGVD 29 (11/26/84)   35.280  (m)          115.75   (f) ADJUSTED    1 2
 HV0323
 HV0323.Superseded values are not recommended for survey control.
 HV0323
 HV0323.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0323.See file dsdata.pdf to determine how the superseded data were derived.
 HV0323
 HV0323_MARKER: DB = BENCH MARK DISK
 HV0323_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0323_STAMPING: G 134 1971
 HV0323_MARK LOGO: CGS
 HV0323_PROJECTION: FLUSH
 HV0323_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0323
 HV0323  HISTORY     - Date     Condition        Report By
 HV0323  HISTORY     - 1971     MONUMENTED       NGS
 HV0323
 HV0323                          STATION DESCRIPTION
 HV0323
 HV0323'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0323'2.3 MI SE FROM CALIFORNIA.
 HV0323'ABOUT 2.3 MILES SOUTHEAST ALONG STATE HIGHWAY 235 FROM THE POST
 HV0323'OFFICE AT CALIFORNIA, ABOUT 0.95 MILE NORTHWEST OF THE JUNCTION
 HV0323'OF STATE HIGHWAY 235 AND STATE HIGHWAY 246 AT LEXINGTON PARK, AT
 HV0323'THE JUNCTION OF PEGG ROAD, AT THE WEST CORNER OF A STEEL FENCE
 HV0323'AROUND A NAVAL AIR STATION, 170 FEET NORTHWEST OF THE NORTHWEST
 HV0323'STEEL GATE POST FOR A GATE RAILROAD ENTRANCE, 59.3 FEET
 HV0323'NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 112 FEET SOUTHEAST
 HV0323'OF THE WEST CORNER OF THE STEEL FENCE AROUND THE NAVAL TEST
 HV0323'CENTER, 97 FEET NORTH OF THE CENTER OF THE CROSSING OF THE
 HV0323'RAILROAD AND THE HIGHWAY, 0.7 FOOT SOUTHWEST OF A METAL WITNESS
 HV0323'POST, 0.9 FOOT SOUTHWEST OF THE STEEL FENCE, ABOUT LEVEL WITH
 HV0323'THE HIGHWAY AND IS A DISK ON THE TOP OF A COPPER COATED STEEL ROD
 HV0323'FLUSH WITH THE GROUND AND ENCASED IN A 6 INCH STEEL PIPE
 HV0323'PROJECTING 1 INCH ABOVE THE LEVEL OF THE GROUND.  THE ROD WAS
 HV0323'DRIVEN TO REFUSAL AT A DEPTH OF 78 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7791 ***********************************************************************
 HV7791  DESIGNATION -  G 135
 HV7791  PID         -  HV7791
 HV7791  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7791  COUNTRY     -  US
 HV7791  USGS QUAD   -  BRISTOL (2016)
 HV7791
 HV7791                         *CURRENT SURVEY CONTROL
 HV7791  ______________________________________________________________________
 HV7791* NAD 83(1986) POSITION- 38 49 54.     (N) 076 43 53.     (W)   SCALED
 HV7791* NAVD 88 ORTHO HEIGHT -    37.598 (meters)      123.35  (feet) ADJUSTED
 HV7791  ______________________________________________________________________
 HV7791  GEOID HEIGHT    -        -32.949 (meters)                     GEOID18
 HV7791  DYNAMIC HEIGHT  -         37.577 (meters)      123.28  (feet) COMP
 HV7791  MODELED GRAVITY -    980,068.1   (mgal)                       NAVD 88
 HV7791
 HV7791  VERT ORDER      -  FIRST     CLASS II
 HV7791
 HV7791.The horizontal coordinates were scaled from a map and have
 HV7791.an estimated accuracy of +/- 6 seconds.
 HV7791
 HV7791.The orthometric height was determined by differential leveling and
 HV7791.adjusted by the NATIONAL GEODETIC SURVEY
 HV7791.in June 1991.
 HV7791
 HV7791.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7791.GEOID18 height accuracy estimate available here.
 HV7791
 HV7791.Click photographs - Photos may exist for this station.
 HV7791
 HV7791.The dynamic height is computed by dividing the NAVD 88
 HV7791.geopotential number by the normal gravity value computed on the
 HV7791.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7791.degrees latitude (g = 980.6199 gals.).
 HV7791
 HV7791.The modeled gravity was interpolated from observed gravity values.
 HV7791
 HV7791;                    North         East    Units  Estimated Accuracy
 HV7791;SPC MD       -   129,350.      423,320.      MT  (+/- 180 meters Scaled)
 HV7791
 HV7791_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH497995(NAD 83)
 HV7791
 HV7791                          SUPERSEDED SURVEY CONTROL
 HV7791
 HV7791  NGVD 29 (11/26/84)   37.832  (m)          124.12   (f) ADJUSTED    1 2
 HV7791
 HV7791.Superseded values are not recommended for survey control.
 HV7791
 HV7791.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7791.See file dsdata.pdf to determine how the superseded data were derived.
 HV7791
 HV7791_MARKER: DV = VERTICAL CONTROL DISK
 HV7791_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV7791+WITH SETTING: INTO GROUND
 HV7791_STAMPING: G 135 1975
 HV7791_MARK LOGO: NGS
 HV7791_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7791+STABILITY: SURFACE MOTION
 HV7791
 HV7791  HISTORY     - Date     Condition        Report By
 HV7791  HISTORY     - 1975     MONUMENTED       NGS
 HV7791
 HV7791                          STATION DESCRIPTION
 HV7791
 HV7791'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7791'0.6 MI NORTH FROM UPPER MARLBORO.
 HV7791'0.6 MILE NORTH ALONG U.S. HIGHWAY 301 FROM THE JUNCTION OF STATE
 HV7791'HIGHWAY 408 AND U.S. HIGHWAY 301 AT UPPER MARLBORO. NEAR THE TALL
 HV7791'CEDARS MOTEL. 46.4 FEET NORTHWEST OF THE CENTERLINE OF THE SOUTHBOUND
 HV7791'LANE OF U.S. HIGHWAY 301. 60.5 FEET SOUTHEAST OF THE SOUTHEAST CORNER
 HV7791'OF THE TALL CEDARS MOTEL. 6 FEET SOUTH OF POWER POLE NO PEP 855853.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3817 ***********************************************************************
 JV3817  DESIGNATION -  G 136
 JV3817  PID         -  JV3817
 JV3817  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV3817  COUNTRY     -  US
 JV3817  USGS QUAD   -  ODENTON (2016)
 JV3817
 JV3817                         *CURRENT SURVEY CONTROL
 JV3817  ______________________________________________________________________
 JV3817* NAD 83(1986) POSITION- 39 02 28.     (N) 076 40 23.     (W)   SCALED
 JV3817* NAVD 88 ORTHO HEIGHT -    37.880 (meters)      124.28  (feet) ADJUSTED
 JV3817  ______________________________________________________________________
 JV3817  GEOID HEIGHT    -        -32.791 (meters)                     GEOID18
 JV3817  DYNAMIC HEIGHT  -         37.859 (meters)      124.21  (feet) COMP
 JV3817  MODELED GRAVITY -    980,079.4   (mgal)                       NAVD 88
 JV3817
 JV3817  VERT ORDER      -  FIRST     CLASS II
 JV3817
 JV3817.The horizontal coordinates were scaled from a map and have
 JV3817.an estimated accuracy of +/- 6 seconds.
 JV3817
 JV3817.The orthometric height was determined by differential leveling and
 JV3817.adjusted by the NATIONAL GEODETIC SURVEY
 JV3817.in June 1991.
 JV3817
 JV3817.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3817.GEOID18 height accuracy estimate available here.
 JV3817
 JV3817.Click photographs - Photos may exist for this station.
 JV3817
 JV3817.The dynamic height is computed by dividing the NAVD 88
 JV3817.geopotential number by the normal gravity value computed on the
 JV3817.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3817.degrees latitude (g = 980.6199 gals.).
 JV3817
 JV3817.The modeled gravity was interpolated from observed gravity values.
 JV3817
 JV3817;                    North         East    Units  Estimated Accuracy
 JV3817;SPC MD       -   152,620.      428,300.      MT  (+/- 180 meters Scaled)
 JV3817
 JV3817_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ552226(NAD 83)
 JV3817
 JV3817                          SUPERSEDED SURVEY CONTROL
 JV3817
 JV3817  NGVD 29 (11/26/84)   38.116  (m)          125.05   (f) ADJUSTED    1 2
 JV3817
 JV3817.Superseded values are not recommended for survey control.
 JV3817
 JV3817.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3817.See file dsdata.pdf to determine how the superseded data were derived.
 JV3817
 JV3817_MARKER: DV = VERTICAL CONTROL DISK
 JV3817_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV3817_STAMPING: G 136 1975
 JV3817_MARK LOGO: NGS
 JV3817_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3817_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3817+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2005
 JV3817
 JV3817  HISTORY     - Date     Condition        Report By
 JV3817  HISTORY     - 1975     MONUMENTED       NGS
 JV3817  HISTORY     - 20020218 GOOD             USPSQD
 JV3817  HISTORY     - 20050720 GOOD             USPSQD
 JV3817
 JV3817                          STATION DESCRIPTION
 JV3817
 JV3817'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 JV3817'6.65 MI NORTH FROM BOWIE.
 JV3817'6.65 MILES NORTH ALONG STATE HIGHWAY 3 FROM THE JUNCTION OF U.S.
 JV3817'HIGHWAY 301 STATE HIGHWAY 3 AND U.S. HIGHWAY 50 AT BOWIE. .65 MILE
 JV3817'NORTHEAST OF HIGHWAY MILEPOST NO 6. .2 MILE NORTHEAST OF WAUGH CHAPEL
 JV3817'ROAD. 53 FEET NORTHWEST OF THE CENTERLINE OF THE SOUTHBOUND LANE OF
 JV3817'STATE HIGHWAY 3. 21.5 FEET EAST OF THE CENTERLINE OF A DIRT ROAD. 20.8
 JV3817'FEET SOUTHEAST A HIGH TENSION POWER POLE NO CKT 110546. 21 FEET NORTH
 JV3817'OF THE CENTER OF A METAL GATE. 6.6 FEET NORTHWEST OF THE CENTER OF 4
 JV3817'LARGE GUY WIRES.
 JV3817
 JV3817                          STATION RECOVERY (2002)
 JV3817
 JV3817'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV3817'RECOVERED IN GOOD CONDITION.
 JV3817
 JV3817                          STATION RECOVERY (2005)
 JV3817
 JV3817'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV3817'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3824 ***********************************************************************
 JV3824  DESIGNATION -  G 137
 JV3824  PID         -  JV3824
 JV3824  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV3824  COUNTRY     -  US
 JV3824  USGS QUAD   -  ODENTON (2016)
 JV3824
 JV3824                         *CURRENT SURVEY CONTROL
 JV3824  ______________________________________________________________________
 JV3824* NAD 83(1986) POSITION- 39 05 56.31   (N) 076 37 34.81   (W)   HD_HELD1
 JV3824* NAVD 88 ORTHO HEIGHT -    29.360 (meters)       96.33  (feet) ADJUSTED
 JV3824  ______________________________________________________________________
 JV3824  GEOID HEIGHT    -        -32.867 (meters)                     GEOID18
 JV3824  DYNAMIC HEIGHT  -         29.344 (meters)       96.27  (feet) COMP
 JV3824  MODELED GRAVITY -    980,082.4   (mgal)                       NAVD 88
 JV3824
 JV3824  VERT ORDER      -  FIRST     CLASS II
 JV3824
 JV3824.The horizontal coordinates were determined by differentially corrected
 JV3824.hand held GPS observations or other comparable positioning techniques
 JV3824.and have an estimated accuracy of +/- 3 meters.
 JV3824
 JV3824.The orthometric height was determined by differential leveling and
 JV3824.adjusted by the NATIONAL GEODETIC SURVEY
 JV3824.in June 1991.
 JV3824
 JV3824.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3824.GEOID18 height accuracy estimate available here.
 JV3824
 JV3824.Click photographs - Photos may exist for this station.
 JV3824
 JV3824.The dynamic height is computed by dividing the NAVD 88
 JV3824.geopotential number by the normal gravity value computed on the
 JV3824.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3824.degrees latitude (g = 980.6199 gals.).
 JV3824
 JV3824.The modeled gravity was interpolated from observed gravity values.
 JV3824
 JV3824;                    North         East    Units  Estimated Accuracy
 JV3824;SPC MD       -   159,059.7     432,322.5     MT  (+/- 3 meters HH1 GPS) 
 JV3824
 JV3824_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5936529018(NAD 83)
 JV3824
 JV3824                          SUPERSEDED SURVEY CONTROL
 JV3824
 JV3824  NGVD 29 (11/26/84)   29.597  (m)           97.10   (f) ADJUSTED    1 2
 JV3824
 JV3824.Superseded values are not recommended for survey control.
 JV3824
 JV3824.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3824.See file dsdata.pdf to determine how the superseded data were derived.
 JV3824
 JV3824_MARKER: DV = VERTICAL CONTROL DISK
 JV3824_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV3824+WITH SETTING: INTO GROUND
 JV3824_STAMPING: G 137 1975
 JV3824_MARK LOGO: NGS
 JV3824_PROJECTION: RECESSED 5 CENTIMETERS
 JV3824_MAGNETIC: I = MARKER IS A STEEL ROD
 JV3824_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3824_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3824+SATELLITE: SATELLITE OBSERVATIONS - November 18, 2021
 JV3824_ROD/PIPE-DEPTH: 1.2 meters
 JV3824
 JV3824  HISTORY     - Date     Condition        Report By
 JV3824  HISTORY     - 1975     MONUMENTED       NGS
 JV3824  HISTORY     - 19920303 GOOD             MDSHA
 JV3824  HISTORY     - 20020218 GOOD             USPSQD
 JV3824  HISTORY     - 20050720 GOOD             USPSQD
 JV3824  HISTORY     - 20211118 GOOD             MDSHA
 JV3824
 JV3824                          STATION DESCRIPTION
 JV3824
 JV3824'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 JV3824'BENFIELD.
 JV3824'AT THE ANNE ARUNDEL POLICE AND FIRE DEPARTMENT HEADQUARTERS. 72.3 FEET
 JV3824'EAST OF THE CENTERLINE OF THE NORTHBOUND LANE OF STATE HIGHWAY 3. 54.5
 JV3824'FEET NORTH OF THE CENTERLINE OF THE PAVED DRIVE TO ANNE ARUNDEL POLICE
 JV3824'AND FIRE DEPARTMENT HEADQUARTERS. 46.1 FEET EAST OF CURB OF STATE
 JV3824'HIGHWAY 3. 3.1 FEET WEST OF A BRICKWALL SAYING ANNE ARUNDEL COUNTY
 JV3824'MARYLAND POLICE HEADQUARTERS. 39.0 FEET SOUTHEAST OF POWER POLE WITH A
 JV3824'STREET LIGHT NO 292865.
 JV3824
 JV3824                          STATION RECOVERY (1992)
 JV3824
 JV3824'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JV3824'RECOVERED IN GOOD CONDITION.
 JV3824
 JV3824                          STATION RECOVERY (2002)
 JV3824
 JV3824'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV3824'RECOVERED IN GOOD CONDITION.
 JV3824
 JV3824                          STATION RECOVERY (2005)
 JV3824
 JV3824'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV3824'RECOVERED IN GOOD CONDITION.
 JV3824
 JV3824                          STATION RECOVERY (2021)
 JV3824
 JV3824'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EOF)
 JV3824'57.9 FT (17.6 M) NORTH OF THE CENTERLINE OF MAXWELL FRYE ROAD, 44.1 FT
 JV3824'(13.4 M) EAST OF FACE OF CURB FOR VETERANS HIGHWAY, 35.0 FT (10.7 M)
 JV3824'SOUTHEAST OF ELECTRIC POLE # BGE292865 W/ STREET LIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1030 ***********************************************************************
 HU1030  DESIGNATION -  G 141
 HU1030  PID         -  HU1030
 HU1030  STATE/COUNTY-  MD/WORCESTER
 HU1030  COUNTRY     -  US
 HU1030  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1030
 HU1030                         *CURRENT SURVEY CONTROL
 HU1030  ______________________________________________________________________
 HU1030* NAD 83(2011) POSITION- 38 07 31.15056(N) 075 10 55.77463(W)   ADJUSTED
 HU1030* NAD 83(2011) ELLIP HT-   -35.412 (meters)        (06/05/19)   ADJUSTED
 HU1030* NAD 83(2011) EPOCH   -  2010.00
 HU1030* NAVD 88 ORTHO HEIGHT -     0.943 (meters)        3.09  (feet) ADJUSTED
 HU1030  ______________________________________________________________________
 HU1030  GEOID HEIGHT    -        -36.303 (meters)                     GEOID18
 HU1030  NAD 83(2011) X  -  1,284,827.243 (meters)                     COMP
 HU1030  NAD 83(2011) Y  - -4,856,752.187 (meters)                     COMP
 HU1030  NAD 83(2011) Z  -  3,916,374.105 (meters)                     COMP
 HU1030  LAPLACE CORR    -          0.69  (seconds)                    DEFLEC18
 HU1030  DYNAMIC HEIGHT  -          0.942 (meters)        3.09  (feet) COMP
 HU1030  MODELED GRAVITY -    979,984.8   (mgal)                       NAVD 88
 HU1030
 HU1030  VERT ORDER      -  SECOND    CLASS I
 HU1030
 HU1030  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU1030  Standards:
 HU1030         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU1030            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU1030  -------------------------------------------------------------------
 HU1030  NETWORK    1.02   0.88           0.49   0.29   0.45     -0.00492790
 HU1030  -------------------------------------------------------------------
 HU1030  Click here for local accuracies and other accuracy information.
 HU1030
 HU1030.The horizontal coordinates were established by GPS observations
 HU1030.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 HU1030
 HU1030.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU1030.been affixed to the stable North American tectonic plate. See 
 HU1030.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU1030
 HU1030.The horizontal coordinates are valid at the epoch date displayed above
 HU1030.which is a decimal equivalence of Year/Month/Day.
 HU1030
 HU1030.The orthometric height was determined by differential leveling and
 HU1030.adjusted by the NATIONAL GEODETIC SURVEY
 HU1030.in June 1991.
 HU1030
 HU1030.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1030.GEOID18 height accuracy estimate available here.
 HU1030
 HU1030.Click photographs - Photos may exist for this station.
 HU1030
 HU1030.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU1030
 HU1030.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1030
 HU1030.The ellipsoidal height was determined by GPS observations
 HU1030.and is referenced to NAD 83.
 HU1030
 HU1030.The dynamic height is computed by dividing the NAVD 88
 HU1030.geopotential number by the normal gravity value computed on the
 HU1030.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1030.degrees latitude (g = 980.6199 gals.).
 HU1030
 HU1030.The modeled gravity was interpolated from observed gravity values.
 HU1030
 HU1030. The following values were computed from the NAD 83(2011) position.
 HU1030
 HU1030;                    North         East     Units Scale Factor Converg.
 HU1030;SPC MD       -    52,499.931   559,388.344   MT  1.00003498   +1 08 27.4
 HU1030;SPC MD       -   172,243.52  1,835,259.93   sFT  1.00003498   +1 08 27.4
 HU1030;UTM  18      - 4,219,735.308   484,034.120   MT  0.99960314   -0 06 44.9
 HU1030
 HU1030!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1030!SPC MD       -   1.00000556  x   1.00003498  =   1.00004054
 HU1030!UTM  18      -   1.00000556  x   0.99960314  =   0.99960869
 HU1030
 HU1030_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8403419735(NAD 83)
 HU1030
 HU1030                          SUPERSEDED SURVEY CONTROL
 HU1030
 HU1030  NGVD 29 (11/26/84)    1.184  (m)            3.88   (f) ADJUSTED    2 1
 HU1030
 HU1030.Superseded values are not recommended for survey control.
 HU1030
 HU1030.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1030.See file dsdata.pdf to determine how the superseded data were derived.
 HU1030
 HU1030_MARKER: DV = VERTICAL CONTROL DISK
 HU1030_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1030+WITH SETTING: INTO GROUND
 HU1030_STAMPING: G 141 1977
 HU1030_MARK LOGO: NGS
 HU1030_PROJECTION: RECESSED 76 CENTIMETERS
 HU1030_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1030+STABILITY: SURFACE MOTION
 HU1030_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1030+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2015
 HU1030
 HU1030  HISTORY     - Date     Condition        Report By
 HU1030  HISTORY     - 1977     MONUMENTED       NGS
 HU1030  HISTORY     - 1989     GOOD             USPSQD
 HU1030  HISTORY     - 20140423 GOOD             ARCSHE
 HU1030  HISTORY     - 20150316 GOOD             NGS
 HU1030
 HU1030                          STATION DESCRIPTION
 HU1030
 HU1030'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1030'IN ASSATEAGUE ISLAND.
 HU1030'7.2 MILES NORTHEAST ALONG THE SERVICE ROAD FROM THE STATE LINE ON
 HU1030'ASSATEAGUE ISLAND, 38 FEET NORTHEAST OF THE CENTERLINE OF A TRACK
 HU1030'ROAD 30 FEET SOUTH OF THE CENTERLINE OF A TRACK ROAD, 28 FEET
 HU1030'NORTHWEST OF THE CENTERLINE OF THE ROAD, 6 FEET NORTHEAST OF
 HU1030'POWERLINE POLE 295.
 HU1030
 HU1030                          STATION RECOVERY (1989)
 HU1030
 HU1030'RECOVERY NOTE BY US POWER SQUADRON 1989 (FFS)
 HU1030'RECOVERED IN GOOD CONDITION.
 HU1030
 HU1030                          STATION RECOVERY (2014)
 HU1030
 HU1030'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HU1030'THE MARK IS LOCATED ABOUT 11.9 MI (19.1 KM) EAST OF GIRDLETREE, 10.5
 HU1030'MI (16.9 KM) SOUTHEAST OF NEWARK AND 9.1 MI (14.6 KM) EAST OF BOXIRON
 HU1030'ON ASSATEAGUE ISLAND.  OWNERSHIP--US PARK SERVICE.
 HU1030'
 HU1030'TO REACH FROM THE SOUTHEAST END OF THE VERAZZANO BRIDGE ON STATE ROUTE
 HU1030'611, GO SOUTHEAST ON ROUTE 611 FOR 0.62 MI (1.0 KM) TO A SIDE ROAD ON
 HU1030'THE RIGHT.  TURN RIGHT AND GO SOUTHEAST ON BAYBERRY DRIVE FOR 3.68 MI
 HU1030'(5.9 KM) TO THE END OF THE PAVED ROAD.  ACTIVATE FOUR-WHEEL DRIVE AND
 HU1030'CONTINUE SOUTHEAST ON A SAND ROAD/BEACH FOR 4.62 MI (7.4 KM) TO A SAND
 HU1030'TRACK ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTHWEST FOR 0.11 MI (0.2
 HU1030'KM) TO THE MARK ON THE RIGHT.
 HU1030'
 HU1030'IT IS 47.5 FT (14.5 M) NORTHEAST OF THE CENTERLINE OF THE ROAD AND 1.8
 HU1030'FT (0.5 M) SOUTHEAST OF A FIBERGLASS WITNESS POST.
 HU1030
 HU1030                          STATION RECOVERY (2015)
 HU1030
 HU1030'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2015 (NTW)
 HU1030'THE STATION IS LOCATED AT KM 23.4 IN THE OSV ZONE (FOX HILLS). FROM
 HU1030'BAYBERRY DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL
 HU1030'DRIVE REQUIRED). DRIVE SOUTH ON THE BEACH 7.4 KM (4.6 MI), TURN RIGHT
 HU1030'ONTO FOX HILLS ROAD, AND CONTINUE FOR 155.1 M (508.8 FT). THE STATION
 HU1030'IS 12.8 M (42 FT) NORTH OF THE ROAD, 50 CM (19.7 IN) EAST-SOUTHEAST OF
 HU1030'AN ORANGE CARSONITE WITNESS POST, AND IS RECESSED 65 CM (25.6 IN).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3874 ***********************************************************************
 JV3874  DESIGNATION -  G 143
 JV3874  PID         -  JV3874
 JV3874  STATE/COUNTY-  MD/FREDERICK
 JV3874  COUNTRY     -  US
 JV3874  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3874
 JV3874                         *CURRENT SURVEY CONTROL
 JV3874  ______________________________________________________________________
 JV3874* NAD 83(1986) POSITION- 39 19 02.     (N) 077 32 53.     (W)   SCALED
 JV3874* NAVD 88 ORTHO HEIGHT -   130.787 (meters)      429.09  (feet) ADJUSTED
 JV3874  ______________________________________________________________________
 JV3874  GEOID HEIGHT    -        -32.820 (meters)                     GEOID18
 JV3874  DYNAMIC HEIGHT  -        130.716 (meters)      428.86  (feet) COMP
 JV3874  MODELED GRAVITY -    980,081.6   (mgal)                       NAVD 88
 JV3874
 JV3874  VERT ORDER      -  FIRST     CLASS II
 JV3874
 JV3874.The horizontal coordinates were scaled from a map and have
 JV3874.an estimated accuracy of +/- 6 seconds.
 JV3874
 JV3874.The orthometric height was determined by differential leveling and
 JV3874.adjusted by the NATIONAL GEODETIC SURVEY
 JV3874.in June 1991.
 JV3874
 JV3874.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3874.GEOID18 height accuracy estimate available here.
 JV3874
 JV3874.Click photographs - Photos may exist for this station.
 JV3874
 JV3874.The dynamic height is computed by dividing the NAVD 88
 JV3874.geopotential number by the normal gravity value computed on the
 JV3874.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3874.degrees latitude (g = 980.6199 gals.).
 JV3874
 JV3874.The modeled gravity was interpolated from observed gravity values.
 JV3874
 JV3874;                    North         East    Units  Estimated Accuracy
 JV3874;SPC MD       -   183,360.      352,740.      MT  (+/- 180 meters Scaled)
 JV3874
 JV3874_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ803550(NAD 83)
 JV3874
 JV3874                          SUPERSEDED SURVEY CONTROL
 JV3874
 JV3874.No superseded survey control is available for this station.
 JV3874
 JV3874_MARKER: DV = VERTICAL CONTROL DISK
 JV3874_SETTING: 66 = SET IN ROCK OUTCROP
 JV3874_STAMPING: G 143 1979
 JV3874_MARK LOGO: NGS
 JV3874_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3874+STABILITY: POSITION/ELEVATION WELL
 JV3874
 JV3874  HISTORY     - Date     Condition        Report By
 JV3874  HISTORY     - 1979     MONUMENTED       NGS
 JV3874
 JV3874                          STATION DESCRIPTION
 JV3874
 JV3874'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3874'3.45 MI NORTH FROM POINT OF ROCKS.
 JV3874'1.0 MILE NORTHEAST ALONG STATE ROUTE 15 FROM THE JUNCTION OF STATE
 JV3874'ROUTE 28 IN POINT OF ROCKS TO THE INTERSECTION OF STATE ROUTE 464,
 JV3874'THENCE 2.45 MILES NORTHWEST ALONG ROUTE 464 TO THE MARK ON THE RIGHT,
 JV3874'SET IN MASSIVE BEDROCK ON TOP OF A HILL ON THE WEST SIDE OF A TAN
 JV3874'SINGLE STORY HOUSE OWNED BY MR RICHARD PERAL, 165 FEET NORTH AND UP
 JV3874'HILL FROM THE CENTER OF THE JUNCTION OF A GRAVEL DRIVEWAY LEADING
 JV3874'TO THE HOUSE, 117 FEET WEST OF THE WEST SIDE OF A CONCRETE SLAB
 JV3874'AT THE REAR ENTRANCE TO THE HOUSE, 97.5 FEET NORTHWEST OF THE
 JV3874'SOUTHWEST CORNER OF THE HOUSE.
 JV3874'THE MARK IS 1 FT  S FROM A WITNESS POST.
 JV3874'THE MARK IS 30 FT ABOVE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3940 ***********************************************************************
 JV3940  DESIGNATION -  G 146
 JV3940  PID         -  JV3940
 JV3940  STATE/COUNTY-  MD/WASHINGTON
 JV3940  COUNTRY     -  US
 JV3940  USGS QUAD   -  KEEDYSVILLE (2016)
 JV3940
 JV3940                         *CURRENT SURVEY CONTROL
 JV3940  ______________________________________________________________________
 JV3940* NAD 83(1986) POSITION- 39 24 13.39   (N) 077 39 29.98   (W)   HD_HELD1
 JV3940* NAVD 88 ORTHO HEIGHT -   194.291 (meters)      637.44  (feet) ADJUSTED
 JV3940  ______________________________________________________________________
 JV3940  GEOID HEIGHT    -        -33.363 (meters)                     GEOID18
 JV3940  DYNAMIC HEIGHT  -        194.176 (meters)      637.06  (feet) COMP
 JV3940  MODELED GRAVITY -    980,031.5   (mgal)                       NAVD 88
 JV3940
 JV3940  VERT ORDER      -  FIRST     CLASS II
 JV3940
 JV3940.The horizontal coordinates were determined by differentially corrected
 JV3940.hand held GPS observations or other comparable positioning techniques
 JV3940.and have an estimated accuracy of +/- 3 meters.
 JV3940
 JV3940.The orthometric height was determined by differential leveling and
 JV3940.adjusted by the NATIONAL GEODETIC SURVEY
 JV3940.in June 1991.
 JV3940
 JV3940.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3940.GEOID18 height accuracy estimate available here.
 JV3940
 JV3940.Click photographs - Photos may exist for this station.
 JV3940
 JV3940.The dynamic height is computed by dividing the NAVD 88
 JV3940.geopotential number by the normal gravity value computed on the
 JV3940.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3940.degrees latitude (g = 980.6199 gals.).
 JV3940
 JV3940.The modeled gravity was interpolated from observed gravity values.
 JV3940
 JV3940;                    North         East    Units  Estimated Accuracy
 JV3940;SPC MD       -   193,029.9     343,297.9     MT  (+/- 3 meters HH1 GPS) 
 JV3940
 JV3940_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7110864951(NAD 83)
 JV3940
 JV3940                          SUPERSEDED SURVEY CONTROL
 JV3940
 JV3940.No superseded survey control is available for this station.
 JV3940
 JV3940_MARKER: DV = VERTICAL CONTROL DISK
 JV3940_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3940_STAMPING: G 146 1979
 JV3940_MARK LOGO: NGS
 JV3940_PROJECTION: RECESSED 15 CENTIMETERS
 JV3940_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3940_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3940_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3940+SATELLITE: SATELLITE OBSERVATIONS - May 27, 2021
 JV3940_ROD/PIPE-DEPTH: 4.3 meters
 JV3940
 JV3940  HISTORY     - Date     Condition        Report By
 JV3940  HISTORY     - 1979     MONUMENTED       NGS
 JV3940  HISTORY     - 20070130 GOOD             GEOCAC
 JV3940  HISTORY     - 20090211 GOOD             GEOCAC
 JV3940  HISTORY     - 20100726 GOOD             INDIV
 JV3940  HISTORY     - 20210527 GOOD             BASE9
 JV3940
 JV3940                          STATION DESCRIPTION
 JV3940
 JV3940'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3940'5.5 MI NE FROM WEVERTON.
 JV3940'5.5 MILES NORTHEAST ALONG STATE ROUTE 67 FROM THE NORTH END OF THE
 JV3940'ROUTE 67 OVERPASS BRIDGE OVER U.S. HIGHWAY 340 TO THE MARK ON THE
 JV3940'LEFT, 0.35 MILE NORTHEAST OF A ROAD LEADING EAST TO GATHLAND STATE
 JV3940'PARK, 29 FEET NORTHEAST OF A ROCK FENCE RUNNING EAST TO WEST, 27 FEET
 JV3940'SOUTHEST OF THE CENTER LINE OF THE HIGHWAY, 16.5 FEET NORTH OF AN
 JV3940'UNDERGROUND CABLE BOX NUMBER 287, 1 FOOT SOUTH OF A STANDARD METAL
 JV3940'WITNESS POST, 1 FOOT NORTHWEST OF THE SOUTHEAST END OF A LONG METAL
 JV3940'GUARDRAIL.
 JV3940'THE MARK IS 1 FT  S FROM A WITNESS POST.
 JV3940'THE MARK IS 1 FT BELOW HIGHWAY.
 JV3940
 JV3940                          STATION RECOVERY (2007)
 JV3940
 JV3940'RECOVERY NOTE BY GEOCACHING 2007 (CRC)
 JV3940'THE WITNESS POST WAS VISABLE.  THE MARK IS SET IN A PVC PIPE WITH A
 JV3940'SCREW ON CAP, 4 INCHES BELOW THE SURFACE.
 JV3940
 JV3940                          STATION RECOVERY (2009)
 JV3940
 JV3940'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 JV3940'RECOVERED IN GOOD CONDITION.
 JV3940
 JV3940                          STATION RECOVERY (2010)
 JV3940
 JV3940'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2010
 JV3940'THE WITNESS POST IS STILL IN TACT.  THE MARK WAS RECOVERED IN GOOD
 JV3940'CONDITION AS DESCRIBED IN PREVIOUS RECOVERY NOTES.
 JV3940
 JV3940                          STATION RECOVERY (2021)
 JV3940
 JV3940'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2021 (DRD)
 JV3940'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3847 ***********************************************************************
 JV3847  DESIGNATION -  G 147
 JV3847  PID         -  JV3847
 JV3847  STATE/COUNTY-  MD/MONTGOMERY
 JV3847  COUNTRY     -  US
 JV3847  USGS QUAD   -  ROCKVILLE (2016)
 JV3847
 JV3847                         *CURRENT SURVEY CONTROL
 JV3847  ______________________________________________________________________
 JV3847* NAD 83(1986) POSITION- 39 04 33.     (N) 077 08 15.     (W)   SCALED
 JV3847* NAVD 88 ORTHO HEIGHT -   125.387 (meters)      411.37  (feet) ADJUSTED
 JV3847  ______________________________________________________________________
 JV3847  GEOID HEIGHT    -        -31.743 (meters)                     GEOID18
 JV3847  DYNAMIC HEIGHT  -        125.320 (meters)      411.15  (feet) COMP
 JV3847  MODELED GRAVITY -    980,097.7   (mgal)                       NAVD 88
 JV3847
 JV3847  VERT ORDER      -  FIRST     CLASS II
 JV3847
 JV3847.The horizontal coordinates were scaled from a map and have
 JV3847.an estimated accuracy of +/- 6 seconds.
 JV3847
 JV3847.The orthometric height was determined by differential leveling and
 JV3847.adjusted by the NATIONAL GEODETIC SURVEY
 JV3847.in June 1991.
 JV3847
 JV3847.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3847.GEOID18 height accuracy estimate available here.
 JV3847
 JV3847.Click photographs - Photos may exist for this station.
 JV3847
 JV3847.The dynamic height is computed by dividing the NAVD 88
 JV3847.geopotential number by the normal gravity value computed on the
 JV3847.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3847.degrees latitude (g = 980.6199 gals.).
 JV3847
 JV3847.The modeled gravity was interpolated from observed gravity values.
 JV3847
 JV3847;                    North         East    Units  Estimated Accuracy
 JV3847;SPC MD       -   156,430.      388,100.      MT  (+/- 180 meters Scaled)
 JV3847
 JV3847_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ150273(NAD 83)
 JV3847
 JV3847                          SUPERSEDED SURVEY CONTROL
 JV3847
 JV3847.No superseded survey control is available for this station.
 JV3847
 JV3847_MARKER: DV = VERTICAL CONTROL DISK
 JV3847_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3847_STAMPING: G 147 1979
 JV3847_MARK LOGO: NGS
 JV3847_PROJECTION: RECESSED
 JV3847_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3847_ROD/PIPE-DEPTH: 4.6 meters
 JV3847
 JV3847  HISTORY     - Date     Condition        Report By
 JV3847  HISTORY     - 1979     MONUMENTED       NGS
 JV3847  HISTORY     - 20020125 MARK NOT FOUND   MDSHA
 JV3847
 JV3847                          STATION DESCRIPTION
 JV3847
 JV3847'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3847'IN ROCKVILLE.
 JV3847'IN ROCKVILLE 2.05 MILES NORTHWEST ALONG STATE ROUTE 355, ROCKVILLE
 JV3847'PIKE FROM THE JUNCTION OF MONTROSE ROAD TO THE MARK ON THE RIGHT,
 JV3847'61 FEET SOUTHWEST OF THE CENTER OF THE MAIN ENTRANCE DOORS TO
 JV3847'BERGMANNS DRY CLEANING BUILDING, 822 ROCKVILLE PIKE, 12 FEET EAST OF
 JV3847'THE EAST CURB OF ROUTE 355, AND 2 FEET SOUTH OF POWER POLE 760452-669.
 JV3847'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JV3847
 JV3847                          STATION RECOVERY (2002)
 JV3847
 JV3847'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV3847'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6431 ***********************************************************************
 JV6431  DESIGNATION -  G 16
 JV6431  PID         -  JV6431
 JV6431  STATE/COUNTY-  MD/MONTGOMERY
 JV6431  COUNTRY     -  US
 JV6431  USGS QUAD   -  BELTSVILLE (2016)
 JV6431
 JV6431                         *CURRENT SURVEY CONTROL
 JV6431  ______________________________________________________________________
 JV6431* NAD 83(1986) POSITION- 39 02 12.     (N) 076 58 47.     (W)   SCALED
 JV6431* NAVD 88 ORTHO HEIGHT -   105.848 (meters)      347.27  (feet) ADJUSTED
 JV6431  ______________________________________________________________________
 JV6431  GEOID HEIGHT    -        -32.020 (meters)                     GEOID18
 JV6431  DYNAMIC HEIGHT  -        105.792 (meters)      347.09  (feet) COMP
 JV6431  MODELED GRAVITY -    980,092.8   (mgal)                       NAVD 88
 JV6431
 JV6431  VERT ORDER      -  SECOND    CLASS I
 JV6431
 JV6431.The horizontal coordinates were scaled from a map and have
 JV6431.an estimated accuracy of +/- 6 seconds.
 JV6431
 JV6431.The orthometric height was determined by differential leveling and
 JV6431.adjusted by the NATIONAL GEODETIC SURVEY
 JV6431.in June 1991.
 JV6431
 JV6431.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6431.GEOID18 height accuracy estimate available here.
 JV6431
 JV6431.Click photographs - Photos may exist for this station.
 JV6431
 JV6431.The dynamic height is computed by dividing the NAVD 88
 JV6431.geopotential number by the normal gravity value computed on the
 JV6431.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6431.degrees latitude (g = 980.6199 gals.).
 JV6431
 JV6431.The modeled gravity was interpolated from observed gravity values.
 JV6431
 JV6431;                    North         East    Units  Estimated Accuracy
 JV6431;SPC MD       -   152,080.      401,760.      MT  (+/- 180 meters Scaled)
 JV6431
 JV6431_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ286227(NAD 83)
 JV6431
 JV6431                          SUPERSEDED SURVEY CONTROL
 JV6431
 JV6431.No superseded survey control is available for this station.
 JV6431
 JV6431_MARKER: DB = BENCH MARK DISK
 JV6431_SETTING: 0 = UNSPECIFIED SETTING
 JV6431_STAMPING: G 16 1951
 JV6431_MARK LOGO: CGS
 JV6431_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6431_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6431_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6431+SATELLITE: SATELLITE OBSERVATIONS - 1951
 JV6431
 JV6431  HISTORY     - Date     Condition        Report By
 JV6431  HISTORY     - 1951     MONUMENTED       CGS
 JV6431
 JV6431                          STATION DESCRIPTION
 JV6431
 JV6431'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV6431'IN WHITE OAK, ON THE NAVAL SURFACE WEAPONS CENTER GROUNDS, BELIEVED
 JV6431'TO BE AT THE INTERSECTION OF BOWDITCH AND LAKE ROADS.  NO OTHER
 JV6431'INFORMATION AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1144 ***********************************************************************
 JW1144  DESIGNATION -  G 167
 JW1144  PID         -  JW1144
 JW1144  STATE/COUNTY-  MD/GARRETT
 JW1144  COUNTRY     -  US
 JW1144  USGS QUAD   -  DEER PARK (2016)
 JW1144
 JW1144                         *CURRENT SURVEY CONTROL
 JW1144  ______________________________________________________________________
 JW1144* NAD 83(1986) POSITION- 39 25 26.8    (N) 079 20 16.9    (W)   HD_HELD2
 JW1144* NAVD 88 ORTHO HEIGHT -   790.489 (meters)     2593.46  (feet) ADJUSTED
 JW1144  ______________________________________________________________________
 JW1144  GEOID HEIGHT    -        -31.201 (meters)                     GEOID18
 JW1144  DYNAMIC HEIGHT  -        789.948 (meters)     2591.69  (feet) COMP
 JW1144  MODELED GRAVITY -    979,914.9   (mgal)                       NAVD 88
 JW1144
 JW1144  VERT ORDER      -  FIRST     CLASS II
 JW1144
 JW1144.The horizontal coordinates were established by autonomous hand held GPS
 JW1144.observations and have an estimated accuracy of +/- 10 meters.
 JW1144
 JW1144.The orthometric height was determined by differential leveling and
 JW1144.adjusted by the NATIONAL GEODETIC SURVEY
 JW1144.in June 1991.
 JW1144
 JW1144.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1144.GEOID18 height accuracy estimate available here.
 JW1144
 JW1144.Click photographs - Photos may exist for this station.
 JW1144
 JW1144.The dynamic height is computed by dividing the NAVD 88
 JW1144.geopotential number by the normal gravity value computed on the
 JW1144.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1144.degrees latitude (g = 980.6199 gals.).
 JW1144
 JW1144.The modeled gravity was interpolated from observed gravity values.
 JW1144
 JW1144;                    North         East    Units  Estimated Accuracy
 JW1144;SPC MD       -   197,667.      198,703.      MT  (+/- 10 meters HH2 GPS)
 JW1144
 JW1144_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4305365160(NAD 83)
 JW1144
 JW1144                          SUPERSEDED SURVEY CONTROL
 JW1144
 JW1144.No superseded survey control is available for this station.
 JW1144
 JW1144_MARKER: F = FLANGE-ENCASED ROD
 JW1144_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JW1144_STAMPING: G 167 1983
 JW1144_MARK LOGO: NGS
 JW1144_PROJECTION: FLUSH
 JW1144_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1144_ROD/PIPE-DEPTH: 7.5 meters
 JW1144
 JW1144  HISTORY     - Date     Condition        Report By
 JW1144  HISTORY     - 1983     MONUMENTED       NGS
 JW1144
 JW1144                          STATION DESCRIPTION
 JW1144
 JW1144'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1144'7.1 KM (4.4 MI) EAST FROM OAKLAND.
 JW1144'7.1 KM (4.4 MI) EAST ALONG STATE HIGHWAY 135 FROM THE JUNCTION OF
 JW1144'U.S. HIGHWAY 219 IN OAKLAND TO THE MARK ON THE LEFT, IN THE NORTH
 JW1144'ANGLE OF THE JUNCTION OF OAKLAND DEERPARK ROAD, 11.90 METERS (39.0 FT)
 JW1144'NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 19.35 METERS (63.5 FT)
 JW1144'SOUTH OF THE SOUTH CORNER OF A SINGLE STORY FRAME HOUSE, 7.62 METERS
 JW1144'(25.0 FT) NORTHEAST OF THE CENTER OF THE ROAD, 8.70 METERS (28.5 FT)
 JW1144'SOUTH OF POWER POLE 40, 1.82 METERS (6.0 FT) SOUTHWEST OF A LONE 20-CM
 JW1144'(8-INCH) CEDAR TREE.
 JW1144'THE MARK IS 0.91 M ABOVE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1169 ***********************************************************************
 JW1169  DESIGNATION -  G 168
 JW1169  PID         -  JW1169
 JW1169  STATE/COUNTY-  MD/ALLEGANY
 JW1169  COUNTRY     -  US
 JW1169  USGS QUAD   -  LONACONING (2016)
 JW1169
 JW1169                         *CURRENT SURVEY CONTROL
 JW1169  ______________________________________________________________________
 JW1169* NAD 83(1986) POSITION- 39 31 57.     (N) 078 53 23.     (W)   SCALED
 JW1169* NAVD 88 ORTHO HEIGHT -   231.281 (meters)      758.79  (feet) ADJUSTED
 JW1169  ______________________________________________________________________
 JW1169  GEOID HEIGHT    -        -32.464 (meters)                     GEOID18
 JW1169  DYNAMIC HEIGHT  -        231.139 (meters)      758.33  (feet) COMP
 JW1169  MODELED GRAVITY -    980,005.9   (mgal)                       NAVD 88
 JW1169
 JW1169  VERT ORDER      -  FIRST     CLASS II
 JW1169
 JW1169.The horizontal coordinates were scaled from a map and have
 JW1169.an estimated accuracy of +/- 6 seconds.
 JW1169
 JW1169.The orthometric height was determined by differential leveling and
 JW1169.adjusted by the NATIONAL GEODETIC SURVEY
 JW1169.in June 1991.
 JW1169
 JW1169.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1169.GEOID18 height accuracy estimate available here.
 JW1169
 JW1169.Click photographs - Photos may exist for this station.
 JW1169
 JW1169.The dynamic height is computed by dividing the NAVD 88
 JW1169.geopotential number by the normal gravity value computed on the
 JW1169.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1169.degrees latitude (g = 980.6199 gals.).
 JW1169
 JW1169.The modeled gravity was interpolated from observed gravity values.
 JW1169
 JW1169;                    North         East    Units  Estimated Accuracy
 JW1169;SPC MD       -   208,810.      237,540.      MT  (+/- 180 meters Scaled)
 JW1169
 JW1169_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD813779(NAD 83)
 JW1169
 JW1169                          SUPERSEDED SURVEY CONTROL
 JW1169
 JW1169.No superseded survey control is available for this station.
 JW1169
 JW1169_MARKER: DV = VERTICAL CONTROL DISK
 JW1169_SETTING: 66 = SET IN ROCK OUTCROP
 JW1169_STAMPING: G 168 1983
 JW1169_MARK LOGO: NGS
 JW1169_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1169+STABILITY: POSITION/ELEVATION WELL
 JW1169
 JW1169  HISTORY     - Date     Condition        Report By
 JW1169  HISTORY     - 1983     MONUMENTED       NGS
 JW1169
 JW1169                          STATION DESCRIPTION
 JW1169
 JW1169'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1169'9.5 KM (5.9 MI) SW FROM CRESAPTOWN.
 JW1169'9.5 KM (5.9 MI) SOUTHWEST ALONG U.S. HIGHWAY 220 FROM THE CALVARY
 JW1169'BAPTIST CHURCH IN CRESAPTOWN TO THE MARK ON THE RIGHT, IN THE BASE OF
 JW1169'A 45.72 METER (150.0 FT) HIGH MASSIVE ROCK CLIFF, 24.7 METERS
 JW1169'(81.0 FT) NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 18.28 METERS
 JW1169'(60.0 FT) NORTHWEST OF A METAL GUARDRAIL, 1.52 METERS (5.0 FT)
 JW1169'WEST-NORTHWEST OF A POWER POLE.
 JW1169'THE MARK IS 0.18 METERS  SW FROM A WITNESS POST.
 JW1169'THE MARK IS 1.37 M BELOW HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1575 ***********************************************************************
 JW1575  DESIGNATION -  G 169 RESET
 JW1575  PID         -  JW1575
 JW1575  STATE/COUNTY-  MD/ALLEGANY
 JW1575  COUNTRY     -  US
 JW1575  USGS QUAD   -  ARTEMAS (2019)
 JW1575
 JW1575                         *CURRENT SURVEY CONTROL
 JW1575  ______________________________________________________________________
 JW1575* NAD 83(1986) POSITION- 39 40 02.     (N) 078 26 40.     (W)   SCALED
 JW1575* NAVD 88 ORTHO HEIGHT -   288.709 (meters)      947.21  (feet) ADJUSTED
 JW1575  ______________________________________________________________________
 JW1575  GEOID HEIGHT    -        -33.430 (meters)                     GEOID18
 JW1575  DYNAMIC HEIGHT  -        288.535 (meters)      946.64  (feet) COMP
 JW1575  MODELED GRAVITY -    980,019.5   (mgal)                       NAVD 88
 JW1575
 JW1575  VERT ORDER      -  SECOND    CLASS I
 JW1575
 JW1575.The horizontal coordinates were scaled from a map and have
 JW1575.an estimated accuracy of +/- 6 seconds.
 JW1575
 JW1575.The orthometric height was determined by differential leveling and
 JW1575.adjusted by the NATIONAL GEODETIC SURVEY
 JW1575.in April 1995.
 JW1575
 JW1575.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1575.GEOID18 height accuracy estimate available here.
 JW1575
 JW1575.Click photographs - Photos may exist for this station.
 JW1575
 JW1575.The dynamic height is computed by dividing the NAVD 88
 JW1575.geopotential number by the normal gravity value computed on the
 JW1575.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1575.degrees latitude (g = 980.6199 gals.).
 JW1575
 JW1575.The modeled gravity was interpolated from observed gravity values.
 JW1575
 JW1575;                    North         East    Units  Estimated Accuracy
 JW1575;SPC MD       -   223,060.      276,060.      MT  (+/- 180 meters Scaled)
 JW1575
 JW1575_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD192939(NAD 83)
 JW1575
 JW1575                          SUPERSEDED SURVEY CONTROL
 JW1575
 JW1575.No superseded survey control is available for this station.
 JW1575
 JW1575_MARKER: DV = VERTICAL CONTROL DISK
 JW1575_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1575_STAMPING: G 169 RESET 1987
 JW1575_MARK LOGO: NGS
 JW1575_PROJECTION: RECESSED 15 CENTIMETERS
 JW1575_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1575_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1575+STABILITY: SURFACE MOTION
 JW1575_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1575+SATELLITE: SATELLITE OBSERVATIONS - October 21, 1992
 JW1575
 JW1575  HISTORY     - Date     Condition        Report By
 JW1575  HISTORY     - 1987     MONUMENTED       NGS
 JW1575  HISTORY     - 19921021 GOOD             MDSHA
 JW1575
 JW1575                          STATION DESCRIPTION
 JW1575
 JW1575'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987
 JW1575'12.6 KM (7.85 MI) EAST FROM FLINTSTONE.
 JW1575'12.6 KM (7.85 MI) EAST ALONG U.S. HIGHWAY 40-48 FROM THE WEST END OF
 JW1575'HIGHWAY BRIDGE OVER FLINTSTONE CREEK IN FLINTSTONE, TO THE MARK ON
 JW1575'THE LEFT, AT JUNCTION OF PAVED RD LEADING NORTH, (MV-SMITH RD) 21.34
 JW1575'M (70.0 FT) NORTH OF CENTERLINE OF WESTBOUND LANE OF HWY.  94.0 FEET
 JW1575'WEST OF CENTERLINE CONSTRUCTION US 48,HOLE DUG 2.70 FEET TO SOLID
 JW1575'ROCK, 1.3 FEET DIAMETER, POURED WITH CONCRETE TO TOP GROUND.  OLD
 JW1575'CASING SET IN CONCRETE WITH BRASS CAP AT TOP CONCRETE.
 JW1575
 JW1575                          STATION RECOVERY (1992)
 JW1575
 JW1575'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1575'THE MARKER WAS RECOVERED AND FOUND IN GOOD CONDITION.  DUE TO CHANGES
 JW1575'IN THE AREA AND THE CONSTRUCTION OF INTERSTATE HIGHWAY 68, A COMPLETE
 JW1575'NEW DESCRIPTION IS REQUIRED.  THE MARKER IS LOCATED ABOUT 6.8 MI
 JW1575'(10.9 KM) EAST-SOUTHEAST OF FLINTSTONE, 4.9 MI (7.9 KM)
 JW1575'WEST-SOUTHWEST OF PINEY GROVE AND 3.7 MI (6.0 KM) EAST-SOUTHEAST OF
 JW1575'PRATT.  IT IS ON THE ROAD RIGHT-OF-WAY.  TO REACH FROM A POINT WHERE
 JW1575'THE VICTOR CUSHWA MEMORIAL BRIDGE PASSES OVER THE INTERSTATE HIGHWAY
 JW1575'68 AT THE SIDELING HILL EXHIBIT CENTER, GO WEST ON INTERSTATE HIGHWAY
 JW1575'68 FOR 10.7 MI (17.2 KM) TO THE MARKER ON THE RIGHT, NORTH OF THE
 JW1575'WESTBOUND LANES.  THE POINT IS MARKED WITH A STANDARD NATIONAL
 JW1575'GEODETIC SURVEY VERTICAL CONTROL DISK SET IN CONCRETE IN A N.G.S.
 JW1575'ACCESS COVER.  IT IS 66.5 FT (20.3 M) NORTHEAST OF THE CENTER OF THE
 JW1575'WESTBOUND LANES OF INTERSTATE HIGHWAY 68, 113.0 FT (34.4 M) EAST OF
 JW1575'THE SOUTH END OF A 30 IN REINFORCED CONCRETE PIPE, 11.5 FT (3.5 M)
 JW1575'SOUTHWEST OF A 6 IN PINE TREE, AND ABOUT LEVEL WITH THE SURFACE OF
 JW1575'THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC9954 ***********************************************************************
 AC9954  DESIGNATION -  G 170
 AC9954  PID         -  AC9954
 AC9954  STATE/COUNTY-  MD/SOMERSET
 AC9954  COUNTRY     -  US
 AC9954  USGS QUAD   -  DEAL ISLAND (2016)
 AC9954
 AC9954                         *CURRENT SURVEY CONTROL
 AC9954  ______________________________________________________________________
 AC9954* NAD 83(1986) POSITION- 38 09 43.     (N) 075 56 52.     (W)   SCALED
 AC9954* NAVD 88 ORTHO HEIGHT -     1.765 (meters)        5.79  (feet) ADJUSTED
 AC9954  ______________________________________________________________________
 AC9954  GEOID HEIGHT    -        -35.792 (meters)                     GEOID18
 AC9954  DYNAMIC HEIGHT  -          1.764 (meters)        5.79  (feet) COMP
 AC9954  MODELED GRAVITY -    979,984.5   (mgal)                       NAVD 88
 AC9954
 AC9954  VERT ORDER      -  SECOND    CLASS I
 AC9954
 AC9954.The horizontal coordinates were scaled from a map and have
 AC9954.an estimated accuracy of +/- 6 seconds.
 AC9954
 AC9954.The orthometric height was determined by differential leveling and
 AC9954.adjusted by the NATIONAL GEODETIC SURVEY
 AC9954.in October 1997.
 AC9954
 AC9954.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC9954.GEOID18 height accuracy estimate available here.
 AC9954
 AC9954.Click photographs - Photos may exist for this station.
 AC9954
 AC9954.The dynamic height is computed by dividing the NAVD 88
 AC9954.geopotential number by the normal gravity value computed on the
 AC9954.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC9954.degrees latitude (g = 980.6199 gals.).
 AC9954
 AC9954.The modeled gravity was interpolated from observed gravity values.
 AC9954
 AC9954;                    North         East    Units  Estimated Accuracy
 AC9954;SPC MD       -    55,510.      492,220.      MT  (+/- 180 meters Scaled)
 AC9954
 AC9954_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH169242(NAD 83)
 AC9954
 AC9954                          SUPERSEDED SURVEY CONTROL
 AC9954
 AC9954.No superseded survey control is available for this station.
 AC9954
 AC9954_MARKER: DV = VERTICAL CONTROL DISK
 AC9954_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC9954_STAMPING: G 170 1987
 AC9954_MARK LOGO: NGS
 AC9954_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AC9954_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC9954+STABILITY: SURFACE MOTION
 AC9954_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC9954+SATELLITE: SATELLITE OBSERVATIONS - April 09, 2001
 AC9954
 AC9954  HISTORY     - Date     Condition        Report By
 AC9954  HISTORY     - 1987     MONUMENTED       NGS
 AC9954  HISTORY     - 20010409 GOOD             MDSHA
 AC9954
 AC9954                          STATION DESCRIPTION
 AC9954
 AC9954'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 AC9954'FROM THE POST OFFICE IN CHANCE GO SE FOR 70 M (229.7 FT) ON HAINES
 AC9954'POINT ROAD TO A ROAD CROSSING. TURN RIGHT AND GO SW FOR 0.6 KM (0.35
 AC9954'MI) ON HIGHWAY 363 TO THE MARK ON THE LEFT, 0.5 M (1.6 FT) NW FROM THE
 AC9954'NW CORNER OF AN OLD BANK BUILDING, 7 M (23.0 FT) ESE FROM THE
 AC9954'CENTERLINE OF HIGHWAY 363, 22.2 M (72.8 FT) SSE FROM POWERLINE POLE
 AC9954'NO. 36781-85820, 18.7 M (61.4 FT) ENE FROM POWERLINE POLE NO.
 AC9954'36778-85806, AND 15.6 M (51.2 FT) NE FROM POWERLINE POLE NO.
 AC9954'36783-85806.
 AC9954
 AC9954                          STATION RECOVERY (2001)
 AC9954
 AC9954'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AC9954'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2214 ***********************************************************************
 HU2214  DESIGNATION -  G 171
 HU2214  PID         -  HU2214
 HU2214  STATE/COUNTY-  MD/WICOMICO
 HU2214  COUNTRY     -  US
 HU2214  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2214
 HU2214                         *CURRENT SURVEY CONTROL
 HU2214  ______________________________________________________________________
 HU2214* NAD 83(1986) POSITION- 38 28 30.6    (N) 075 45 05.5    (W)   HD_HELD2
 HU2214* NAVD 88 ORTHO HEIGHT -     8.134 (meters)       26.69  (feet) ADJUSTED
 HU2214  ______________________________________________________________________
 HU2214  GEOID HEIGHT    -        -35.574 (meters)                     GEOID18
 HU2214  DYNAMIC HEIGHT  -          8.129 (meters)       26.67  (feet) COMP
 HU2214  MODELED GRAVITY -    980,015.1   (mgal)                       NAVD 88
 HU2214
 HU2214  VERT ORDER      -  SECOND    CLASS I
 HU2214
 HU2214.The horizontal coordinates were established by autonomous hand held GPS
 HU2214.observations and have an estimated accuracy of +/- 10 meters.
 HU2214
 HU2214.The orthometric height was determined by differential leveling and
 HU2214.adjusted by the NATIONAL GEODETIC SURVEY
 HU2214.in June 1991.
 HU2214
 HU2214.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2214.GEOID18 height accuracy estimate available here.
 HU2214
 HU2214.Click photographs - Photos may exist for this station.
 HU2214
 HU2214.The dynamic height is computed by dividing the NAVD 88
 HU2214.geopotential number by the normal gravity value computed on the
 HU2214.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2214.degrees latitude (g = 980.6199 gals.).
 HU2214
 HU2214.The modeled gravity was interpolated from observed gravity values.
 HU2214
 HU2214;                    North         East    Units  Estimated Accuracy
 HU2214;SPC MD       -    90,492.      508,939.      MT  (+/- 10 meters HH2 GPS)
 HU2214
 HU2214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3444558805(NAD 83)
 HU2214
 HU2214                          SUPERSEDED SURVEY CONTROL
 HU2214
 HU2214  NGVD 29 (06/12/91)    8.378  (m)           27.49   (f) ADJUSTED    2 1
 HU2214
 HU2214.Superseded values are not recommended for survey control.
 HU2214
 HU2214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2214.See file dsdata.pdf to determine how the superseded data were derived.
 HU2214
 HU2214_MARKER: DV = VERTICAL CONTROL DISK
 HU2214_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2214_STAMPING: G 171 1989
 HU2214_MARK LOGO: NGS
 HU2214_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2214_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2214+STABILITY: SURFACE MOTION
 HU2214_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2214+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2017
 HU2214
 HU2214  HISTORY     - Date     Condition        Report By
 HU2214  HISTORY     - 1989     MONUMENTED       MDSHA
 HU2214  HISTORY     - 19900221 GOOD             NGS
 HU2214  HISTORY     - 20170606 GOOD             ARCSHE
 HU2214
 HU2214                          STATION DESCRIPTION
 HU2214
 HU2214'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2214'1.3 KM (0.81 MI) NORTHERLY ALONG STATE HIGHWAY 313 FROM THE JUNCTION
 HU2214'OF STATE HIGHWAY 54 IN MARDELA SPRINGS, 12.6 M (41.34 FT) WEST OF THE
 HU2214'CENTERLINE OF THE HIGHWAY, 8.7 M (28.54 FT) EAST OF UTILITY POLE
 HU2214'NUMBER 42518 97173, 8.5 M (27.89 FT) NORTH OF THE CENTER OF A
 HU2214'GRAVELED ROAD, 4.5 M (14.76 FT) SOUTH OF THE CENTER OF A DITCH, 0.5 M
 HU2214'(1.64 FT) BELOW THE LEVEL OF THE HIGHWAY, AND IN A CONCRETE MONUMENT
 HU2214'THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2214
 HU2214                          STATION RECOVERY (2017)
 HU2214
 HU2214'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2214'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6163 ***********************************************************************
 JV6163  DESIGNATION -  G 172
 JV6163  PID         -  JV6163
 JV6163  STATE/COUNTY-  MD/HARFORD
 JV6163  COUNTRY     -  US
 JV6163  USGS QUAD   -  EDGEWOOD (2016)
 JV6163
 JV6163                         *CURRENT SURVEY CONTROL
 JV6163  ______________________________________________________________________
 JV6163* NAD 83(1986) POSITION- 39 27 12.     (N) 076 21 22.     (W)   SCALED
 JV6163* NAVD 88 ORTHO HEIGHT -    66.105 (meters)      216.88  (feet) ADJUSTED
 JV6163  ______________________________________________________________________
 JV6163  GEOID HEIGHT    -        -32.969 (meters)                     GEOID18
 JV6163  DYNAMIC HEIGHT  -         66.070 (meters)      216.76  (feet) COMP
 JV6163  MODELED GRAVITY -    980,102.0   (mgal)                       NAVD 88
 JV6163
 JV6163  VERT ORDER      -  FIRST     CLASS II
 JV6163
 JV6163.The horizontal coordinates were scaled from a map and have
 JV6163.an estimated accuracy of +/- 6 seconds.
 JV6163
 JV6163.The orthometric height was determined by differential leveling and
 JV6163.adjusted by the NATIONAL GEODETIC SURVEY
 JV6163.in June 1991.
 JV6163
 JV6163.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6163.GEOID18 height accuracy estimate available here.
 JV6163
 JV6163.Click photographs - Photos may exist for this station.
 JV6163
 JV6163.The dynamic height is computed by dividing the NAVD 88
 JV6163.geopotential number by the normal gravity value computed on the
 JV6163.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6163.degrees latitude (g = 980.6199 gals.).
 JV6163
 JV6163.The modeled gravity was interpolated from observed gravity values.
 JV6163
 JV6163;                    North         East    Units  Estimated Accuracy
 JV6163;SPC MD       -   198,530.      455,420.      MT  (+/- 180 meters Scaled)
 JV6163
 JV6163_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ833679(NAD 83)
 JV6163
 JV6163                          SUPERSEDED SURVEY CONTROL
 JV6163
 JV6163.No superseded survey control is available for this station.
 JV6163
 JV6163_MARKER: I = METAL ROD
 JV6163_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6163_STAMPING: G 172 1989
 JV6163_MARK LOGO: NGS
 JV6163_PROJECTION: FLUSH
 JV6163_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6163_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6163_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6163+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6163_ROD/PIPE-DEPTH: 4.3 meters
 JV6163
 JV6163  HISTORY     - Date     Condition        Report By
 JV6163  HISTORY     - 1989     MONUMENTED       NGS
 JV6163
 JV6163                          STATION DESCRIPTION
 JV6163
 JV6163'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6163'5.4 KM (3.35 MI) SOUTHERLY ALONG STATE HIGHWAY 152 FROM ITS JUNCTION
 JV6163'WITH U.S. HIGHWAY 1 IN LYNCHS CORNER, 11.2 M (36.7 FT) NORTHEAST OF
 JV6163'THE CENTERLINE OF THE HIGHWAY, 9.5 M (31.2 FT) SOUTHEAST OF A
 JV6163'DRIVEWAY, 0.6 M (2.0 FT) SOUTHEAST OF THE SOUTHEAST END OF A FENCE
 JV6163'AND WITNESS POST, AND 0.6 M (2.0 FT) BELOW THE LEVEL OF THE HIGHWAY.
 JV6163'NOTE--ACCESS TO DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6203 ***********************************************************************
 JV6203  DESIGNATION -  G 173
 JV6203  PID         -  JV6203
 JV6203  STATE/COUNTY-  MD/HARFORD
 JV6203  COUNTRY     -  US
 JV6203  USGS QUAD   -  FAWN GROVE (2019)
 JV6203
 JV6203                         *CURRENT SURVEY CONTROL
 JV6203  ______________________________________________________________________
 JV6203* NAD 83(1986) POSITION- 39 38 21.9    (N) 076 24 45.0    (W)   HD_HELD2
 JV6203* NAVD 88 ORTHO HEIGHT -    89.979 (meters)      295.21  (feet) ADJUSTED
 JV6203  ______________________________________________________________________
 JV6203  GEOID HEIGHT    -        -32.628 (meters)                     GEOID18
 JV6203  DYNAMIC HEIGHT  -         89.934 (meters)      295.06  (feet) COMP
 JV6203  MODELED GRAVITY -    980,118.2   (mgal)                       NAVD 88
 JV6203
 JV6203  VERT ORDER      -  FIRST     CLASS II
 JV6203
 JV6203.The horizontal coordinates were established by autonomous hand held GPS
 JV6203.observations and have an estimated accuracy of +/- 10 meters.
 JV6203
 JV6203.The orthometric height was determined by differential leveling and
 JV6203.adjusted by the NATIONAL GEODETIC SURVEY
 JV6203.in June 1991.
 JV6203
 JV6203.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6203.GEOID18 height accuracy estimate available here.
 JV6203
 JV6203.Click photographs - Photos may exist for this station.
 JV6203
 JV6203.The dynamic height is computed by dividing the NAVD 88
 JV6203.geopotential number by the normal gravity value computed on the
 JV6203.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6203.degrees latitude (g = 980.6199 gals.).
 JV6203
 JV6203.The modeled gravity was interpolated from observed gravity values.
 JV6203
 JV6203;                    North         East    Units  Estimated Accuracy
 JV6203;SPC MD       -   219,156.      450,433.      MT  (+/- 10 meters HH2 GPS)
 JV6203
 JV6203_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7879588690(NAD 83)
 JV6203
 JV6203                          SUPERSEDED SURVEY CONTROL
 JV6203
 JV6203.No superseded survey control is available for this station.
 JV6203
 JV6203_MARKER: DV = VERTICAL CONTROL DISK
 JV6203_SETTING: 66 = SET IN ROCK OUTCROP
 JV6203_STAMPING: G 173 1989
 JV6203_MARK LOGO: NGS
 JV6203_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6203_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6203+STABILITY: POSITION/ELEVATION WELL
 JV6203_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6203+SATELLITE: SATELLITE OBSERVATIONS - November 03, 2004
 JV6203
 JV6203  HISTORY     - Date     Condition        Report By
 JV6203  HISTORY     - 1989     MONUMENTED       NGS
 JV6203  HISTORY     - 20041103 GOOD             GEOCAC
 JV6203
 JV6203                          STATION DESCRIPTION
 JV6203
 JV6203'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6203'3.8 KM (2.35 MI) SOUTHERLY ALONG STATE HIGHWAY 24 FROM THE JUNCTION
 JV6203'OF STATE HIGHWAY 165 IN BUSHS CORNER, NEAR THE CENTER OF THE SOUTHERN
 JV6203'1/3 OF A 50 FOOT EXPOSED AREA OF BEDROCK IN A HIGHWAY CUT, 0.2 KM
 JV6203'(0.10 MI) SOUTH OF THE INTERSECTION OF SAINT CLAIR BRIDGE ROAD, 6.6 M
 JV6203'(21.7 FT) WEST OF THE CENTERLINE OF THE HIGHWAY, 0.3 M (1.0 FT) ABOVE
 JV6203'THE LEVEL OF THE HIGHWAY, AND 0.2 M (0.7 FT) NORTH OF A WITNESS POST.
 JV6203
 JV6203                          STATION RECOVERY (2004)
 JV6203
 JV6203'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6203'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6190 ***********************************************************************
 JV6190  DESIGNATION -  G 174
 JV6190  PID         -  JV6190
 JV6190  STATE/COUNTY-  MD/HARFORD
 JV6190  COUNTRY     -  US
 JV6190  USGS QUAD   -  DELTA (2019)
 JV6190
 JV6190                         *CURRENT SURVEY CONTROL
 JV6190  ______________________________________________________________________
 JV6190* NAD 83(1986) POSITION- 39 42 41.1    (N) 076 20 58.3    (W)   HD_HELD2
 JV6190* NAVD 88 ORTHO HEIGHT -   154.966 (meters)      508.42  (feet) ADJUSTED
 JV6190  ______________________________________________________________________
 JV6190  GEOID HEIGHT    -        -32.765 (meters)                     GEOID18
 JV6190  DYNAMIC HEIGHT  -        154.888 (meters)      508.16  (feet) COMP
 JV6190  MODELED GRAVITY -    980,118.5   (mgal)                       NAVD 88
 JV6190
 JV6190  VERT ORDER      -  FIRST     CLASS II
 JV6190
 JV6190.The horizontal coordinates were established by autonomous hand held GPS
 JV6190.observations and have an estimated accuracy of +/- 10 meters.
 JV6190
 JV6190.The orthometric height was determined by differential leveling and
 JV6190.adjusted by the NATIONAL GEODETIC SURVEY
 JV6190.in June 1991.
 JV6190
 JV6190.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6190.GEOID18 height accuracy estimate available here.
 JV6190
 JV6190.Click photographs - Photos may exist for this station.
 JV6190
 JV6190.The dynamic height is computed by dividing the NAVD 88
 JV6190.geopotential number by the normal gravity value computed on the
 JV6190.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6190.degrees latitude (g = 980.6199 gals.).
 JV6190
 JV6190.The modeled gravity was interpolated from observed gravity values.
 JV6190
 JV6190;                    North         East    Units  Estimated Accuracy
 JV6190;SPC MD       -   227,187.      455,782.      MT  (+/- 10 meters HH2 GPS)
 JV6190
 JV6190_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8431996598(NAD 83)
 JV6190
 JV6190                          SUPERSEDED SURVEY CONTROL
 JV6190
 JV6190.No superseded survey control is available for this station.
 JV6190
 JV6190_MARKER: I = METAL ROD
 JV6190_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 JV6190+WITH SETTING: INFORMATION.
 JV6190_STAMPING: G 174 1989
 JV6190_MARK LOGO: NGS
 JV6190_PROJECTION: FLUSH
 JV6190_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6190_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6190_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6190+SATELLITE: SATELLITE OBSERVATIONS - November 22, 2004
 JV6190_ROD/PIPE-DEPTH: 2.8 meters
 JV6190
 JV6190  HISTORY     - Date     Condition        Report By
 JV6190  HISTORY     - 1989     MONUMENTED       NGS
 JV6190  HISTORY     - 20010421 GOOD             USPSQD
 JV6190  HISTORY     - 20041122 GOOD             GEOCAC
 JV6190
 JV6190                          STATION DESCRIPTION
 JV6190
 JV6190'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6190'IN WHITEFORD, AT THE JUNCTION OF STATE HIGHWAYS 136 AND 165, 20.3 M
 JV6190'(66.6 FT) SOUTHWEST OF THE CENTERLINE OF HIGHWAY 136, 10.8 M (35.4
 JV6190'FT) SOUTHEAST OF THE CENTERLINE OF HIGHWAY 165, 6.7 M (22.0 FT) NORTH
 JV6190'OF THE NORTHWEST LEG OF A SIGN (PENN-MAR PLAZA), 0.6 M (2.0 FT) ABOVE
 JV6190'THE LEVEL OF THE HIGHWAY, AND 0.4 M (1.3 FT) SOUTHWEST OF A WITNESS
 JV6190'POST AND UTILITY POLE NUMBER 18216 WITH THREE GUY WIRES.
 JV6190'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 JV6190
 JV6190                          STATION RECOVERY (2001)
 JV6190
 JV6190'RECOVERY NOTE BY US POWER SQUADRON 2001 (LB)
 JV6190'NO WITNESS POST.
 JV6190
 JV6190                          STATION RECOVERY (2004)
 JV6190
 JV6190'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JV6190'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2473 ***********************************************************************
 HU2473  DESIGNATION -  G 175
 HU2473  PID         -  HU2473
 HU2473  STATE/COUNTY-  MD/WICOMICO
 HU2473  COUNTRY     -  US
 HU2473  USGS QUAD   -  WANGO (2016)
 HU2473
 HU2473                         *CURRENT SURVEY CONTROL
 HU2473  ______________________________________________________________________
 HU2473* NAD 83(1986) POSITION- 38 20 58.     (N) 075 29 55.     (W)   SCALED
 HU2473* NAVD 88 ORTHO HEIGHT -    16.631 (meters)       54.56  (feet) ADJUSTED
 HU2473  ______________________________________________________________________
 HU2473  GEOID HEIGHT    -        -35.908 (meters)                     GEOID18
 HU2473  DYNAMIC HEIGHT  -         16.620 (meters)       54.53  (feet) COMP
 HU2473  MODELED GRAVITY -    980,003.5   (mgal)                       NAVD 88
 HU2473
 HU2473  VERT ORDER      -  SECOND    CLASS I
 HU2473
 HU2473.The horizontal coordinates were scaled from a map and have
 HU2473.an estimated accuracy of +/- 6 seconds.
 HU2473
 HU2473.The orthometric height was determined by differential leveling and
 HU2473.adjusted by the NATIONAL GEODETIC SURVEY
 HU2473.in June 1991.
 HU2473
 HU2473.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2473.GEOID18 height accuracy estimate available here.
 HU2473
 HU2473.Click photographs - Photos may exist for this station.
 HU2473
 HU2473.The dynamic height is computed by dividing the NAVD 88
 HU2473.geopotential number by the normal gravity value computed on the
 HU2473.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2473.degrees latitude (g = 980.6199 gals.).
 HU2473
 HU2473.The modeled gravity was interpolated from observed gravity values.
 HU2473
 HU2473;                    North         East    Units  Estimated Accuracy
 HU2473;SPC MD       -    76,870.      531,240.      MT  (+/- 180 meters Scaled)
 HU2473
 HU2473_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH564447(NAD 83)
 HU2473
 HU2473                          SUPERSEDED SURVEY CONTROL
 HU2473
 HU2473  NGVD 29 (06/12/91)   16.877  (m)           55.37   (f) ADJUSTED    2 1
 HU2473
 HU2473.Superseded values are not recommended for survey control.
 HU2473
 HU2473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2473.See file dsdata.pdf to determine how the superseded data were derived.
 HU2473
 HU2473_MARKER: I = METAL ROD
 HU2473_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2473_STAMPING: G 175 1990
 HU2473_MARK LOGO: NGS
 HU2473_PROJECTION: RECESSED 1 CENTIMETERS
 HU2473_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2473_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2473_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2473+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2473_ROD/PIPE-DEPTH: 25.6 meters
 HU2473_SLEEVE-DEPTH  : 0.9 meters
 HU2473
 HU2473  HISTORY     - Date     Condition        Report By
 HU2473  HISTORY     - 1990     MONUMENTED       NGS
 HU2473
 HU2473                          STATION DESCRIPTION
 HU2473
 HU2473'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2473'11.1 KM (6.90 MI) WESTERLY ALONG STATE HIGHWAY 350 (MOUNT HERMON ROAD)
 HU2473'FROM THE JUNCTION OF STATE HIGHWAY 354 (WILLARDS WHITON ROAD) IN
 HU2473'POWELLVILLE, 32.6 M (106.96 FT) EAST OF THE CENTER OF A DRIVEWAY,
 HU2473'32.5 M (106.63 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF A HOUSE, 24.7
 HU2473'M (81.04 FT) SOUTH-SOUTHEAST OF THE SOUTHEAST CORNER OF A HOUSE, 22.5
 HU2473'M (73.82 FT) WEST OF THE CENTER OF THE MOST WESTERLY 1 OF 2 DRIVEWAYS
 HU2473', 7.6 M (24.93 FT) NORTH OF THE CENTERLINE OF THE HIGHWAY, 0.7 M
 HU2473'(2.30 FT) ABOVE THE LEVEL OF THE HIGHWAY, 0.5 M (1.64 FT) NORTHEAST
 HU2473'OF A RIGHT-OF-WAY MONUMENT, AND 0.3 M (0.98 FT) SOUTH OF A WITNESS
 HU2473'POST.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2473'THE MONUMENT IS ON PROPERTY OWNED BY REESE HAMMOND, RT 3 BOX 346,
 HU2473'SALISBURY, MD 21801, TELEPHONE NUMBER (301) 742-3094.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2509 ***********************************************************************
 HU2509  DESIGNATION -  G 176
 HU2509  PID         -  HU2509
 HU2509  STATE/COUNTY-  MD/WICOMICO
 HU2509  COUNTRY     -  US
 HU2509  USGS QUAD   -  EDEN (2016)
 HU2509
 HU2509                         *CURRENT SURVEY CONTROL
 HU2509  ______________________________________________________________________
 HU2509* NAD 83(1986) POSITION- 38 18 43.     (N) 075 38 53.     (W)   SCALED
 HU2509* NAVD 88 ORTHO HEIGHT -    12.150 (meters)       39.86  (feet) ADJUSTED
 HU2509  ______________________________________________________________________
 HU2509  GEOID HEIGHT    -        -35.874 (meters)                     GEOID18
 HU2509  DYNAMIC HEIGHT  -         12.143 (meters)       39.84  (feet) COMP
 HU2509  MODELED GRAVITY -    979,999.8   (mgal)                       NAVD 88
 HU2509
 HU2509  VERT ORDER      -  SECOND    CLASS I
 HU2509
 HU2509.The horizontal coordinates were scaled from a map and have
 HU2509.an estimated accuracy of +/- 6 seconds.
 HU2509
 HU2509.The orthometric height was determined by differential leveling and
 HU2509.adjusted by the NATIONAL GEODETIC SURVEY
 HU2509.in June 1991.
 HU2509
 HU2509.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2509.GEOID18 height accuracy estimate available here.
 HU2509
 HU2509.Click photographs - Photos may exist for this station.
 HU2509
 HU2509.The dynamic height is computed by dividing the NAVD 88
 HU2509.geopotential number by the normal gravity value computed on the
 HU2509.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2509.degrees latitude (g = 980.6199 gals.).
 HU2509
 HU2509.The modeled gravity was interpolated from observed gravity values.
 HU2509
 HU2509;                    North         East    Units  Estimated Accuracy
 HU2509;SPC MD       -    72,500.      518,240.      MT  (+/- 180 meters Scaled)
 HU2509
 HU2509_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH433406(NAD 83)
 HU2509
 HU2509                          SUPERSEDED SURVEY CONTROL
 HU2509
 HU2509  NGVD 29 (06/12/91)   12.406  (m)           40.70   (f) ADJUSTED    2 1
 HU2509
 HU2509.Superseded values are not recommended for survey control.
 HU2509
 HU2509.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2509.See file dsdata.pdf to determine how the superseded data were derived.
 HU2509
 HU2509_MARKER: I = METAL ROD
 HU2509_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2509_STAMPING: G 176 1990
 HU2509_MARK LOGO: NGS
 HU2509_PROJECTION: RECESSED 5 CENTIMETERS
 HU2509_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2509_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2509_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2509+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2509_ROD/PIPE-DEPTH: 18.2 meters
 HU2509_SLEEVE-DEPTH  : 0.9 meters
 HU2509
 HU2509  HISTORY     - Date     Condition        Report By
 HU2509  HISTORY     - 1990     MONUMENTED       NGS
 HU2509
 HU2509                          STATION DESCRIPTION
 HU2509
 HU2509'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2509'1.0 KM (0.62 MI) WESTERLY ALONG ALLEN CUT-OFF ROAD FROM ITS JUNCTION
 HU2509'WITH COUNTY ROAD 360 IN FRUITLAND, THENCE 0.3 KM (0.19 MI)
 HU2509'SOUTHWESTERLY ALONG ALLEN ROAD, 26.0 M (85.30 FT) NORTHEAST OF THE
 HU2509'CENTER OF WALNUT TREE ROAD, 19.9 M (65.29 FT) SOUTH OF THE SOUTH
 HU2509'CORNER OF A HOUSE, 8.7 M (28.54 FT) NORTHWEST OF THE CENTERLINE OF
 HU2509'THE ROAD, 1.8 M (5.91 FT) NORTHEAST OF UTILITY POLE NUMBER 45439
 HU2509'91208, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS
 HU2509'THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY
 HU2509'WILLIAM WASHBURN, RT 1 BOX 540, SALISBURY, MD 21801, TELEPHONE NUMBER
 HU2509'(301) 438-316.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6213 ***********************************************************************
 JV6213  DESIGNATION -  G 177
 JV6213  PID         -  JV6213
 JV6213  STATE/COUNTY-  MD/HARFORD
 JV6213  COUNTRY     -  US
 JV6213  USGS QUAD   -  BEL AIR (2016)
 JV6213
 JV6213                         *CURRENT SURVEY CONTROL
 JV6213  ______________________________________________________________________
 JV6213* NAD 83(1986) POSITION- 39 35 13.     (N) 076 19 46.     (W)   SCALED
 JV6213* NAVD 88 ORTHO HEIGHT -   131.057 (meters)      429.98  (feet) ADJUSTED
 JV6213  ______________________________________________________________________
 JV6213  GEOID HEIGHT    -        -32.728 (meters)                     GEOID18
 JV6213  DYNAMIC HEIGHT  -        130.991 (meters)      429.76  (feet) COMP
 JV6213  MODELED GRAVITY -    980,121.2   (mgal)                       NAVD 88
 JV6213
 JV6213  VERT ORDER      -  FIRST     CLASS II
 JV6213
 JV6213.The horizontal coordinates were scaled from a map and have
 JV6213.an estimated accuracy of +/- 6 seconds.
 JV6213
 JV6213.The orthometric height was determined by differential leveling and
 JV6213.adjusted by the NATIONAL GEODETIC SURVEY
 JV6213.in June 1991.
 JV6213
 JV6213.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6213.GEOID18 height accuracy estimate available here.
 JV6213
 JV6213.Click photographs - Photos may exist for this station.
 JV6213
 JV6213.The dynamic height is computed by dividing the NAVD 88
 JV6213.geopotential number by the normal gravity value computed on the
 JV6213.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6213.degrees latitude (g = 980.6199 gals.).
 JV6213
 JV6213.The modeled gravity was interpolated from observed gravity values.
 JV6213
 JV6213;                    North         East    Units  Estimated Accuracy
 JV6213;SPC MD       -   213,380.      457,610.      MT  (+/- 180 meters Scaled)
 JV6213
 JV6213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ858827(NAD 83)
 JV6213
 JV6213                          SUPERSEDED SURVEY CONTROL
 JV6213
 JV6213.No superseded survey control is available for this station.
 JV6213
 JV6213_MARKER: I = METAL ROD
 JV6213_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6213_STAMPING: G 177 1989
 JV6213_MARK LOGO: NGS
 JV6213_PROJECTION: FLUSH
 JV6213_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6213_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6213_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6213+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6213_ROD/PIPE-DEPTH: 8.3 meters
 JV6213
 JV6213  HISTORY     - Date     Condition        Report By
 JV6213  HISTORY     - 1989     MONUMENTED       NGS
 JV6213
 JV6213                          STATION DESCRIPTION
 JV6213
 JV6213'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6213'1.8 KM (1.10 MI) NORTHEASTERLY ALONG U.S. HIGHWAY 1 FROM THE
 JV6213'JUNCTION OF STATE HIGHWAY 543 IN HICKORY, 56.2 M (184.4 FT) SOUTHWEST
 JV6213'OF THE EXTENDED CENTERLINE OF RUFFS MILL ROAD, 9.7 M (31.8 FT)
 JV6213'NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 0.5 M (1.6 FT) SOUTHWEST
 JV6213'OF UTILITY POLE NUMBER 51681, 0.3 M (1.0 FT) SOUTHEAST OF A WITNESS
 JV6213'POST, AND LEVEL WITH THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS
 JV6213'THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2511 ***********************************************************************
 HU2511  DESIGNATION -  G 178
 HU2511  PID         -  HU2511
 HU2511  STATE/COUNTY-  MD/WICOMICO
 HU2511  COUNTRY     -  US
 HU2511  USGS QUAD   -  EDEN (2016)
 HU2511
 HU2511                         *CURRENT SURVEY CONTROL
 HU2511  ______________________________________________________________________
 HU2511* NAD 83(1986) POSITION- 38 19 50.     (N) 075 41 47.     (W)   SCALED
 HU2511* NAVD 88 ORTHO HEIGHT -     7.609 (meters)       24.96  (feet) ADJUSTED
 HU2511  ______________________________________________________________________
 HU2511  GEOID HEIGHT    -        -35.810 (meters)                     GEOID18
 HU2511  DYNAMIC HEIGHT  -          7.604 (meters)       24.95  (feet) COMP
 HU2511  MODELED GRAVITY -    980,001.8   (mgal)                       NAVD 88
 HU2511
 HU2511  VERT ORDER      -  SECOND    CLASS I
 HU2511
 HU2511.The horizontal coordinates were scaled from a map and have
 HU2511.an estimated accuracy of +/- 6 seconds.
 HU2511
 HU2511.The orthometric height was determined by differential leveling and
 HU2511.adjusted by the NATIONAL GEODETIC SURVEY
 HU2511.in June 1991.
 HU2511
 HU2511.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2511.GEOID18 height accuracy estimate available here.
 HU2511
 HU2511.Click photographs - Photos may exist for this station.
 HU2511
 HU2511.The dynamic height is computed by dividing the NAVD 88
 HU2511.geopotential number by the normal gravity value computed on the
 HU2511.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2511.degrees latitude (g = 980.6199 gals.).
 HU2511
 HU2511.The modeled gravity was interpolated from observed gravity values.
 HU2511
 HU2511;                    North         East    Units  Estimated Accuracy
 HU2511;SPC MD       -    74,510.      513,980.      MT  (+/- 180 meters Scaled)
 HU2511
 HU2511_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH391427(NAD 83)
 HU2511
 HU2511                          SUPERSEDED SURVEY CONTROL
 HU2511
 HU2511  NGVD 29 (06/12/91)    7.864  (m)           25.80   (f) ADJUSTED    2 1
 HU2511
 HU2511.Superseded values are not recommended for survey control.
 HU2511
 HU2511.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2511.See file dsdata.pdf to determine how the superseded data were derived.
 HU2511
 HU2511_MARKER: I = METAL ROD
 HU2511_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2511_STAMPING: G 178 1990
 HU2511_MARK LOGO: NGS
 HU2511_PROJECTION: RECESSED 5 CENTIMETERS
 HU2511_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2511_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2511_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2511+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2511_ROD/PIPE-DEPTH: 1570 meters
 HU2511_SLEEVE-DEPTH  : 0.9 meters
 HU2511
 HU2511  HISTORY     - Date     Condition        Report By
 HU2511  HISTORY     - 1990     MONUMENTED       NGS
 HU2511
 HU2511                          STATION DESCRIPTION
 HU2511
 HU2511'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2511'5.5 KM (3.42 MI) WESTERLY ALONG WALNUT TREE ROAD FROM THE JUNCTION OF
 HU2511'ALLEN ROAD IN FRUITLAND, THENCE 2.6 KM (1.62 MI) NORTHERLY ALONG
 HU2511'UPPER FERRY ROAD, 9.9 M (32.48 FT) SOUTHEAST OF THE CENTERLINE OF THE
 HU2511'ROAD, 9.0 M (29.53 FT) SOUTHWEST OF THE CENTER OF SILOAM ROAD, 2.7 M
 HU2511'(8.86 FT) NORTH OF A FENCE, 0.4 M (1.31 FT) NORTH OF A WITNESS POST,
 HU2511'AND 0.3 M (0.98 FT) ABOVE THE LEVEL OF THE ROAD.  NOTE--ACCESS TO THE
 HU2511'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2202 ***********************************************************************
 HU2202  DESIGNATION -  G 179
 HU2202  PID         -  HU2202
 HU2202  STATE/COUNTY-  MD/WICOMICO
 HU2202  COUNTRY     -  US
 HU2202  USGS QUAD   -  HEBRON (2016)
 HU2202
 HU2202                         *CURRENT SURVEY CONTROL
 HU2202  ______________________________________________________________________
 HU2202* NAD 83(1986) POSITION- 38 29 30.2    (N) 075 42 20.0    (W)   HD_HELD2
 HU2202* NAVD 88 ORTHO HEIGHT -    12.011 (meters)       39.41  (feet) ADJUSTED
 HU2202  ______________________________________________________________________
 HU2202  GEOID HEIGHT    -        -35.607 (meters)                     GEOID18
 HU2202  DYNAMIC HEIGHT  -         12.003 (meters)       39.38  (feet) COMP
 HU2202  MODELED GRAVITY -    980,015.4   (mgal)                       NAVD 88
 HU2202
 HU2202  VERT ORDER      -  SECOND    CLASS I
 HU2202
 HU2202.The horizontal coordinates were established by autonomous hand held GPS
 HU2202.observations and have an estimated accuracy of +/- 10 meters.
 HU2202
 HU2202.The orthometric height was determined by differential leveling and
 HU2202.adjusted by the NATIONAL GEODETIC SURVEY
 HU2202.in June 1991.
 HU2202
 HU2202.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2202.GEOID18 height accuracy estimate available here.
 HU2202
 HU2202.Click photographs - Photos may exist for this station.
 HU2202
 HU2202.The dynamic height is computed by dividing the NAVD 88
 HU2202.geopotential number by the normal gravity value computed on the
 HU2202.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2202.degrees latitude (g = 980.6199 gals.).
 HU2202
 HU2202.The modeled gravity was interpolated from observed gravity values.
 HU2202
 HU2202;                    North         East    Units  Estimated Accuracy
 HU2202;SPC MD       -    92,385.      512,924.      MT  (+/- 10 meters HH2 GPS)
 HU2202
 HU2202_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3846960610(NAD 83)
 HU2202
 HU2202                          SUPERSEDED SURVEY CONTROL
 HU2202
 HU2202  NGVD 29 (06/12/91)   12.257  (m)           40.21   (f) ADJUSTED    2 1
 HU2202
 HU2202.Superseded values are not recommended for survey control.
 HU2202
 HU2202.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2202.See file dsdata.pdf to determine how the superseded data were derived.
 HU2202
 HU2202_MARKER: F = FLANGE-ENCASED ROD
 HU2202_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2202_STAMPING: G 179 1990
 HU2202_MARK LOGO: NGS
 HU2202_PROJECTION: RECESSED 15 CENTIMETERS
 HU2202_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2202_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2202_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2202+SATELLITE: SATELLITE OBSERVATIONS - June 07, 2017
 HU2202_ROD/PIPE-DEPTH: 23.1 meters
 HU2202_SLEEVE-DEPTH  : 0.9 meters
 HU2202
 HU2202  HISTORY     - Date     Condition        Report By
 HU2202  HISTORY     - 1990     MONUMENTED       NGS
 HU2202  HISTORY     - 20170607 GOOD             ARCSHE
 HU2202
 HU2202                          STATION DESCRIPTION
 HU2202
 HU2202'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2202'3.6 KM (2.24 MI) EASTERLY ALONG STATE HIGHWAY 54 FROM THE JUNCTION OF
 HU2202'STATE HIGHWAY 313 IN MARDELA SPRINGS, THENCE 3.2 KM (1.99 MI)
 HU2202'NORTHERLY ALONG NORRIS TWILLEY ROAD, 0.5 KM (0.31 MI) SOUTH OF THE
 HU2202'INTERSECTION OF A CROSSROAD, 13.6 M (44.62 FT) NORTH OF THE CENTER OF
 HU2202'A DRIVEWAY, 7.2 M (23.62 FT) WEST OF THE CENTER OF THE ROAD, 5.5 M
 HU2202'(18.04 FT) NORTH OF UTILITY PEDESTAL NUMBER 26, 0.9 M (2.95 FT) EAST
 HU2202'OF A WITNESS POST, AND 0.7 M (2.30 FT) ABOVE THE LEVEL OF THE ROAD.
 HU2202'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2202
 HU2202                          STATION RECOVERY (2017)
 HU2202
 HU2202'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2202'THE MARK IS ABOUT 4 FT (1.2 M) WEST OF THE EAST EDGE OF WOODS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1511 ***********************************************************************
 HV1511  DESIGNATION -  G 18
 HV1511  PID         -  HV1511
 HV1511  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1511  COUNTRY     -  US
 HV1511  USGS QUAD   -  DEALE (2016)
 HV1511
 HV1511                         *CURRENT SURVEY CONTROL
 HV1511  ______________________________________________________________________
 HV1511* NAD 83(1986) POSITION- 38 49 56.     (N) 076 36 42.     (W)   SCALED
 HV1511* NAVD 88 ORTHO HEIGHT -    51.911 (meters)      170.31  (feet) ADJUSTED
 HV1511  ______________________________________________________________________
 HV1511  GEOID HEIGHT    -        -33.300 (meters)                     GEOID18
 HV1511  DYNAMIC HEIGHT  -         51.881 (meters)      170.21  (feet) COMP
 HV1511  MODELED GRAVITY -    980,057.3   (mgal)                       NAVD 88
 HV1511
 HV1511  VERT ORDER      -  SECOND    CLASS 0
 HV1511
 HV1511.The horizontal coordinates were scaled from a map and have
 HV1511.an estimated accuracy of +/- 6 seconds.
 HV1511
 HV1511.The orthometric height was determined by differential leveling and
 HV1511.adjusted by the NATIONAL GEODETIC SURVEY
 HV1511.in June 1991.
 HV1511
 HV1511.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1511.GEOID18 height accuracy estimate available here.
 HV1511
 HV1511.Click photographs - Photos may exist for this station.
 HV1511
 HV1511.The dynamic height is computed by dividing the NAVD 88
 HV1511.geopotential number by the normal gravity value computed on the
 HV1511.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1511.degrees latitude (g = 980.6199 gals.).
 HV1511
 HV1511.The modeled gravity was interpolated from observed gravity values.
 HV1511
 HV1511;                    North         East    Units  Estimated Accuracy
 HV1511;SPC MD       -   129,450.      433,720.      MT  (+/- 180 meters Scaled)
 HV1511
 HV1511_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH601993(NAD 83)
 HV1511
 HV1511                          SUPERSEDED SURVEY CONTROL
 HV1511
 HV1511  NGVD 29 (11/26/84)   52.176  (m)          171.18   (f) ADJUSTED    2 0
 HV1511
 HV1511.Superseded values are not recommended for survey control.
 HV1511
 HV1511.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1511.See file dsdata.pdf to determine how the superseded data were derived.
 HV1511
 HV1511_MARKER: DB = BENCH MARK DISK
 HV1511_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1511_STAMPING: G 18 1935
 HV1511_MARK LOGO: CGS
 HV1511_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1511+STABILITY: SURFACE MOTION
 HV1511
 HV1511  HISTORY     - Date     Condition        Report By
 HV1511  HISTORY     - 1935     MONUMENTED       CGS
 HV1511  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV1511  HISTORY     - 20031001 MARK NOT FOUND   USPSQD
 HV1511
 HV1511                          STATION DESCRIPTION
 HV1511
 HV1511'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HV1511'0.3 MI N FROM LOTHIAN.
 HV1511'ALONG STATE HIGHWAY 2, 48 FEET WEST OF WEST CORNER OF SCHOOL
 HV1511'GROUNDS, 42 FEET NORTHWET OF TWO WHITE FLASH GAS PUMPS, 18
 HV1511'FEET NORTHWEST OF CENTER LINE OF HIGHWAY, 4 FEET NORTHEAST
 HV1511'OF LARGE BLACK WALNUT TREE, NEAR FENCE CORNER.
 HV1511
 HV1511                          STATION RECOVERY (1971)
 HV1511
 HV1511'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV1511'MARK NOT FOUND.
 HV1511
 HV1511                          STATION RECOVERY (2003)
 HV1511
 HV1511'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV1511'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1512 ***********************************************************************
 HV1512  DESIGNATION -  G 18 RESET
 HV1512  PID         -  HV1512
 HV1512  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1512  COUNTRY     -  US
 HV1512  USGS QUAD   -  DEALE (2016)
 HV1512
 HV1512                         *CURRENT SURVEY CONTROL
 HV1512  ______________________________________________________________________
 HV1512* NAD 83(1986) POSITION- 38 49 56.     (N) 076 36 42.     (W)   SCALED
 HV1512* NAVD 88 ORTHO HEIGHT -    50.86  (meters)      166.9   (feet) RESET
 HV1512  ______________________________________________________________________
 HV1512  GEOID HEIGHT    -        -33.300 (meters)                     GEOID18
 HV1512  VERT ORDER      -  THIRD
 HV1512
 HV1512.The horizontal coordinates were scaled from a map and have
 HV1512.an estimated accuracy of +/- 6 seconds.
 HV1512
 HV1512.The orthometric height was computed from unverified reset data.
 HV1512
 HV1512.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1512.GEOID18 height accuracy estimate available here.
 HV1512
 HV1512.Click photographs - Photos may exist for this station.
 HV1512
 HV1512;                    North         East    Units  Estimated Accuracy
 HV1512;SPC MD       -   129,450.      433,720.      MT  (+/- 180 meters Scaled)
 HV1512
 HV1512_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH601993(NAD 83)
 HV1512
 HV1512                          SUPERSEDED SURVEY CONTROL
 HV1512
 HV1512  NGVD 29 (??/??/??)   51.12   (m)          167.7    (f) RESET       3  
 HV1512
 HV1512.Superseded values are not recommended for survey control.
 HV1512
 HV1512.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1512.See file dsdata.pdf to determine how the superseded data were derived.
 HV1512
 HV1512_MARKER: DB = BENCH MARK DISK
 HV1512_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV1512_SP_SET: FENCE
 HV1512_STAMPING: G 18 RESET 1952
 HV1512_MARK LOGO: MDBCSM
 HV1512_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1512
 HV1512  HISTORY     - Date     Condition        Report By
 HV1512  HISTORY     - 1952     MONUMENTED       MDSRC
 HV1512  HISTORY     - 20041113 MARK NOT FOUND   USPSQD
 HV1512
 HV1512                          STATION DESCRIPTION
 HV1512
 HV1512'DESCRIBED BY MD STATE ROADS COMM 1952
 HV1512'0.3 MI N FROM LOTHIAN.
 HV1512'0.3 MILE NORTH ALONG STATE HIGHWAY 2 FROM THE POST OFFICE
 HV1512'AT LOTHIAN, 270 FEET NORTHWEST OF A STORE BUILDING, 160 FEET
 HV1512'NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 11 FEET NORTH OF A
 HV1512'FIELD ENTRANCE AND AT A FENCE.  NOTE-- THIS MARK WAS ESTABLISHED
 HV1512'AND ITS ELEVATION DETERMINED BY ENGINEERS OF THE STATE ROADS
 HV1512'COMMISSION IN JUNE 1952.
 HV1512
 HV1512                          STATION RECOVERY (2004)
 HV1512
 HV1512'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1512'THERE IS NO LOTHIAN POST OFFICE ALONG THIS PART OF MD RT 2
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2179 ***********************************************************************
 HU2179  DESIGNATION -  G 180
 HU2179  PID         -  HU2179
 HU2179  STATE/COUNTY-  MD/WICOMICO
 HU2179  COUNTRY     -  US
 HU2179  USGS QUAD   -  WETIPQUIN (2016)
 HU2179
 HU2179                         *CURRENT SURVEY CONTROL
 HU2179  ______________________________________________________________________
 HU2179* NAD 83(1986) POSITION- 38 19 17.7    (N) 075 47 53.1    (W)   HD_HELD2
 HU2179* NAVD 88 ORTHO HEIGHT -     2.169 (meters)        7.12  (feet) ADJUSTED
 HU2179  ______________________________________________________________________
 HU2179  GEOID HEIGHT    -        -35.753 (meters)                     GEOID18
 HU2179  DYNAMIC HEIGHT  -          2.168 (meters)        7.11  (feet) COMP
 HU2179  MODELED GRAVITY -    979,998.4   (mgal)                       NAVD 88
 HU2179
 HU2179  VERT ORDER      -  SECOND    CLASS I
 HU2179
 HU2179.The horizontal coordinates were established by autonomous hand held GPS
 HU2179.observations and have an estimated accuracy of +/- 10 meters.
 HU2179
 HU2179.The orthometric height was determined by differential leveling and
 HU2179.adjusted by the NATIONAL GEODETIC SURVEY
 HU2179.in June 1991.
 HU2179
 HU2179.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2179.GEOID18 height accuracy estimate available here.
 HU2179
 HU2179.Click photographs - Photos may exist for this station.
 HU2179
 HU2179.The dynamic height is computed by dividing the NAVD 88
 HU2179.geopotential number by the normal gravity value computed on the
 HU2179.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2179.degrees latitude (g = 980.6199 gals.).
 HU2179
 HU2179.The modeled gravity was interpolated from observed gravity values.
 HU2179
 HU2179;                    North         East    Units  Estimated Accuracy
 HU2179;SPC MD       -    73,391.      505,101.      MT  (+/- 10 meters HH2 GPS)
 HU2179
 HU2179_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3023641797(NAD 83)
 HU2179
 HU2179                          SUPERSEDED SURVEY CONTROL
 HU2179
 HU2179  NGVD 29 (06/12/91)    2.423  (m)            7.95   (f) ADJUSTED    2 1
 HU2179
 HU2179.Superseded values are not recommended for survey control.
 HU2179
 HU2179.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2179.See file dsdata.pdf to determine how the superseded data were derived.
 HU2179
 HU2179_MARKER: F = FLANGE-ENCASED ROD
 HU2179_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2179_STAMPING: G 180 1990
 HU2179_MARK LOGO: NGS
 HU2179_PROJECTION: RECESSED 24 CENTIMETERS
 HU2179_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 HU2179+STABILITY: POSITION/ELEVATION WELL
 HU2179_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2179+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2017
 HU2179_ROD/PIPE-DEPTH: 13.3 meters
 HU2179_SLEEVE-DEPTH  : 0.9 meters
 HU2179
 HU2179  HISTORY     - Date     Condition        Report By
 HU2179  HISTORY     - 1990     MONUMENTED       NGS
 HU2179  HISTORY     - 20170330 GOOD             PROFLN
 HU2179
 HU2179                          STATION DESCRIPTION
 HU2179
 HU2179'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2179'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2179'OFFICE IN QUANTICO, THENCE 1.0 KM (0.62 MI) EASTERLY ALONG STATE
 HU2179'HIGHWAY 349, THENCE 7.0 KM (4.35 MI) SOUTHWESTERLY ALONG STATE
 HU2179'HIGHWAY 352, THENCE 2.2 KM (1.37 MI) NORTHWESTERLY ALONG HEAD OF THE
 HU2179'CREEK ROAD, 39.7 M (130.25 FT) EAST-SOUTHEAST OF THE SOUTHEAST CORNER
 HU2179'OF THE ST. JAMES METHODIST CHURCH, 20.6 M (67.59 FT) EAST OF THE
 HU2179'CENTER OF A DRIVEWAY, 7.2 M (23.62 FT) NORTH OF AND LEVEL WITH THE
 HU2179'CENTER OF THE ROAD, 2.0 M (6.56 FT) EAST OF A UTILITY POLE, AND 0.6 M
 HU2179'(1.97 FT) SOUTH OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT
 HU2179'IS THROUGH A 5-INCH LOGO CAP.
 HU2179
 HU2179                          STATION RECOVERY (2017)
 HU2179
 HU2179'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2179'RECOVERED GOOD.  ADDITIONAL TIES FOLLOW.  ABOUT ON LINE WITH THE EAST
 HU2179'LINE EXTENDED OF THE ENTRANCE TO THE PART OF THE CHURCH THAT HAS A
 HU2179'STEEPLE, 83 FT (25.3 M) EAST-SOUTHEAST OF THE SOUTHEAST CORNER OF THE
 HU2179'BLOCK PORTION OF THE CHURCH, 53 FT (16.2 M) SOUTH OF THE SOUTH FACE OF
 HU2179'THE ENTRANCE, 18 FT (5.5 M) WEST OF A DRIVEWAY, 13.5 FT (4.1 M) WEST
 HU2179'OF THE EAST LINE EXTENDED OF THE MAIN PART OF THE CHURCH (ADJACENT TO
 HU2179'THE PARKING LOT), 13 FT (4.0 M) SOUTHEAST OF AND 13 FT (4.0 M)
 HU2179'SOUTHWEST OF THE WEST AND EAST END POSTS OF A VINYL FENCE, 10 FT (3.0
 HU2179'M) SOUTH OF THE FENCE, 6 FT (1.8 M) EAST OF POLE 712 - 59 - 226 WITH
 HU2179'TRANSFORMER, 0.8 FT (24 CM) BELOW GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2458 ***********************************************************************
 HU2458  DESIGNATION -  G 181
 HU2458  PID         -  HU2458
 HU2458  STATE/COUNTY-  MD/WICOMICO
 HU2458  COUNTRY     -  US
 HU2458  USGS QUAD   -  PITTSVILLE (2016)
 HU2458
 HU2458                         *CURRENT SURVEY CONTROL
 HU2458  ______________________________________________________________________
 HU2458* NAD 83(1986) POSITION- 38 23 29.3    (N) 075 26 48.1    (W)   HD_HELD2
 HU2458* NAVD 88 ORTHO HEIGHT -    19.719 (meters)       64.69  (feet) ADJUSTED
 HU2458  ______________________________________________________________________
 HU2458  GEOID HEIGHT    -        -35.876 (meters)                     GEOID18
 HU2458  DYNAMIC HEIGHT  -         19.707 (meters)       64.66  (feet) COMP
 HU2458  MODELED GRAVITY -    980,007.4   (mgal)                       NAVD 88
 HU2458
 HU2458  VERT ORDER      -  SECOND    CLASS I
 HU2458
 HU2458.The horizontal coordinates were established by autonomous hand held GPS
 HU2458.observations and have an estimated accuracy of +/- 10 meters.
 HU2458
 HU2458.The orthometric height was determined by differential leveling and
 HU2458.adjusted by the NATIONAL GEODETIC SURVEY
 HU2458.in June 1991.
 HU2458
 HU2458.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2458.GEOID18 height accuracy estimate available here.
 HU2458
 HU2458.Click photographs - Photos may exist for this station.
 HU2458
 HU2458.The dynamic height is computed by dividing the NAVD 88
 HU2458.geopotential number by the normal gravity value computed on the
 HU2458.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2458.degrees latitude (g = 980.6199 gals.).
 HU2458
 HU2458.The modeled gravity was interpolated from observed gravity values.
 HU2458
 HU2458;                    North         East    Units  Estimated Accuracy
 HU2458;SPC MD       -    81,611.      535,694.      MT  (+/- 10 meters HH2 GPS)
 HU2458
 HU2458_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6099049345(NAD 83)
 HU2458
 HU2458                          SUPERSEDED SURVEY CONTROL
 HU2458
 HU2458  NGVD 29 (06/12/91)   19.964  (m)           65.50   (f) ADJUSTED    2 1
 HU2458
 HU2458.Superseded values are not recommended for survey control.
 HU2458
 HU2458.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2458.See file dsdata.pdf to determine how the superseded data were derived.
 HU2458
 HU2458_MARKER: I = METAL ROD
 HU2458_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2458_STAMPING: G 181 1990
 HU2458_MARK LOGO: NGS
 HU2458_PROJECTION: RECESSED 2 CENTIMETERS
 HU2458_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2458_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2458_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2458+SATELLITE: SATELLITE OBSERVATIONS - July 19, 2004
 HU2458_ROD/PIPE-DEPTH: 18.1 meters
 HU2458_SLEEVE-DEPTH  : 0.9 meters
 HU2458
 HU2458  HISTORY     - Date     Condition        Report By
 HU2458  HISTORY     - 1990     MONUMENTED       NGS
 HU2458  HISTORY     - 20040719 GOOD             GEOCAC
 HU2458
 HU2458                          STATION DESCRIPTION
 HU2458
 HU2458'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2458'2.6 KM (1.62 MI) WESTERLY ALONG STATE HIGHWAY 346 FROM THE JUNCTION OF
 HU2458'STATE HIGHWAY 353 IN PITTSVILLE, 8.5 M (27.89 FT) NORTH OF AND LEVEL
 HU2458'WITH THE HIGHWAY CENTERLINE, 8.0 M (26.25 FT) SOUTHEAST OF THE CENTER
 HU2458'OF ROUNDS ROAD, AND 2.4 M (7.87 FT) EAST OF UTILITY POLE NUMBER 51240
 HU2458'94067.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2458
 HU2458                          STATION RECOVERY (2004)
 HU2458
 HU2458'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2458'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2350 ***********************************************************************
 HU2350  DESIGNATION -  G 182
 HU2350  PID         -  HU2350
 HU2350  STATE/COUNTY-  MD/WICOMICO
 HU2350  COUNTRY     -  US
 HU2350  USGS QUAD   -  SALISBURY (2016)
 HU2350
 HU2350                         *CURRENT SURVEY CONTROL
 HU2350  ______________________________________________________________________
 HU2350* NAD 83(1986) POSITION- 38 16 58.0    (N) 075 34 35.5    (W)   HD_HELD2
 HU2350* NAVD 88 ORTHO HEIGHT -    14.130 (meters)       46.36  (feet) ADJUSTED
 HU2350  ______________________________________________________________________
 HU2350  GEOID HEIGHT    -        -35.972 (meters)                     GEOID18
 HU2350  DYNAMIC HEIGHT  -         14.121 (meters)       46.33  (feet) COMP
 HU2350  MODELED GRAVITY -    979,996.5   (mgal)                       NAVD 88
 HU2350
 HU2350  VERT ORDER      -  SECOND    CLASS I
 HU2350
 HU2350.The horizontal coordinates were established by autonomous hand held GPS
 HU2350.observations and have an estimated accuracy of +/- 10 meters.
 HU2350
 HU2350.The orthometric height was determined by differential leveling and
 HU2350.adjusted by the NATIONAL GEODETIC SURVEY
 HU2350.in June 1991.
 HU2350
 HU2350.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2350.GEOID18 height accuracy estimate available here.
 HU2350
 HU2350.Click photographs - Photos may exist for this station.
 HU2350
 HU2350.The dynamic height is computed by dividing the NAVD 88
 HU2350.geopotential number by the normal gravity value computed on the
 HU2350.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2350.degrees latitude (g = 980.6199 gals.).
 HU2350
 HU2350.The modeled gravity was interpolated from observed gravity values.
 HU2350
 HU2350;                    North         East    Units  Estimated Accuracy
 HU2350;SPC MD       -    69,362.      524,541.      MT  (+/- 10 meters HH2 GPS)
 HU2350
 HU2350_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4957737347(NAD 83)
 HU2350
 HU2350                          SUPERSEDED SURVEY CONTROL
 HU2350
 HU2350  NGVD 29 (06/12/91)   14.384  (m)           47.19   (f) ADJUSTED    2 1
 HU2350
 HU2350.Superseded values are not recommended for survey control.
 HU2350
 HU2350.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2350.See file dsdata.pdf to determine how the superseded data were derived.
 HU2350
 HU2350_MARKER: I = METAL ROD
 HU2350_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2350_STAMPING: G 182 1989
 HU2350_MARK LOGO: NGS
 HU2350_PROJECTION: FLUSH
 HU2350_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2350_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2350_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2350+SATELLITE: SATELLITE OBSERVATIONS - September 07, 2005
 HU2350_ROD/PIPE-DEPTH: 21.4 meters
 HU2350_SLEEVE-DEPTH  : 0.9 meters
 HU2350
 HU2350  HISTORY     - Date     Condition        Report By
 HU2350  HISTORY     - 1989     MONUMENTED       NGS
 HU2350  HISTORY     - 20050907 GOOD             GEOCAC
 HU2350
 HU2350                          STATION DESCRIPTION
 HU2350
 HU2350'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU2350'0.9 KM (0.56 MI) NORTHEASTERLY ALONG DIVISION STREET FROM ITS JUNCTION
 HU2350'WITH U.S. HIGHWAY 13 IN FRUITLAND, THENCE 5.3 KM (3.29 MI)
 HU2350'SOUTHEASTERLY ALONG ST LUKES ROAD, 0.9 KM (0.56 MI) NORTHWEST OF THE
 HU2350'INTERSECTION OF POCOMOKE ROAD, 8.6 M (28.22 FT) SOUTHWEST OF THE
 HU2350'CENTERLINE OF THE ROAD, 1.3 M (4.27 FT) SOUTHWEST OF A UTILITY POLE,
 HU2350'0.8 M (2.62 FT) NORTHEAST OF A WITNESS POST, AND LEVEL WITH THE ROAD.
 HU2350'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2350
 HU2350                          STATION RECOVERY (2005)
 HU2350
 HU2350'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU2350'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2336 ***********************************************************************
 HU2336  DESIGNATION -  G 183
 HU2336  PID         -  HU2336
 HU2336  STATE/COUNTY-  MD/WICOMICO
 HU2336  COUNTRY     -  US
 HU2336  USGS QUAD   -  SALISBURY (2016)
 HU2336
 HU2336                         *CURRENT SURVEY CONTROL
 HU2336  ______________________________________________________________________
 HU2336* NAD 83(1986) POSITION- 38 22 25.5    (N) 075 35 06.1    (W)   HD_HELD2
 HU2336* NAVD 88 ORTHO HEIGHT -     9.809 (meters)       32.18  (feet) ADJUSTED
 HU2336  ______________________________________________________________________
 HU2336  GEOID HEIGHT    -        -35.816 (meters)                     GEOID18
 HU2336  DYNAMIC HEIGHT  -          9.803 (meters)       32.16  (feet) COMP
 HU2336  MODELED GRAVITY -    980,006.5   (mgal)                       NAVD 88
 HU2336
 HU2336  VERT ORDER      -  SECOND    CLASS I
 HU2336
 HU2336.The horizontal coordinates were established by autonomous hand held GPS
 HU2336.observations and have an estimated accuracy of +/- 10 meters.
 HU2336
 HU2336.The orthometric height was determined by differential leveling and
 HU2336.adjusted by the NATIONAL GEODETIC SURVEY
 HU2336.in June 1991.
 HU2336
 HU2336.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2336.GEOID18 height accuracy estimate available here.
 HU2336
 HU2336.Click photographs - Photos may exist for this station.
 HU2336
 HU2336.The dynamic height is computed by dividing the NAVD 88
 HU2336.geopotential number by the normal gravity value computed on the
 HU2336.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2336.degrees latitude (g = 980.6199 gals.).
 HU2336
 HU2336.The modeled gravity was interpolated from observed gravity values.
 HU2336
 HU2336;                    North         East    Units  Estimated Accuracy
 HU2336;SPC MD       -    79,448.      523,641.      MT  (+/- 10 meters HH2 GPS)
 HU2336
 HU2336_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4889747446(NAD 83)
 HU2336
 HU2336                          SUPERSEDED SURVEY CONTROL
 HU2336
 HU2336  NGVD 29 (06/12/91)   10.065  (m)           33.02   (f) ADJUSTED    2 1
 HU2336
 HU2336.Superseded values are not recommended for survey control.
 HU2336
 HU2336.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2336.See file dsdata.pdf to determine how the superseded data were derived.
 HU2336
 HU2336_MARKER: I = METAL ROD
 HU2336_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2336_STAMPING: G 183 1990
 HU2336_MARK LOGO: NGS
 HU2336_PROJECTION: RECESSED 4 CENTIMETERS
 HU2336_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2336_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2336_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2336+SATELLITE: SATELLITE OBSERVATIONS - June 24, 2004
 HU2336_ROD/PIPE-DEPTH: 23.1 meters
 HU2336_SLEEVE-DEPTH  : 0.9 meters
 HU2336
 HU2336  HISTORY     - Date     Condition        Report By
 HU2336  HISTORY     - 1990     MONUMENTED       NGS
 HU2336  HISTORY     - 20040624 GOOD             GEOCAC
 HU2336
 HU2336                          STATION DESCRIPTION
 HU2336
 HU2336'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2336'IN SALISBURY, AT THE INTERSECTION OF TRUITT AND BENNY STREETS, 68.4 M
 HU2336'(224.41 FT) NORTH OF THE CENTER OF BENNY STREET, 13.9 M (45.60 FT)
 HU2336'NORTH OF THE NEAR RAIL OF A RAILROAD TRACK, 8.5 M (27.89 FT) WEST OF
 HU2336'THE CENTER OF TRUITT STREET, 6.6 M (21.65 FT) SOUTH OF UTILITY POLE
 HU2336'NUMBER 47267 93445, 1.5 M (4.92 FT) SOUTH-SOUTHEAST OF A WITNESS POST
 HU2336'AND FENCE, AND LEVEL WITH TRUITT STREET.  NOTE--ACCESS TO THE DATUM
 HU2336'POINT IS THROUGH A 5-INCH LOGO CAP .
 HU2336
 HU2336                          STATION RECOVERY (2004)
 HU2336
 HU2336'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2336'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2287 ***********************************************************************
 HU2287  DESIGNATION -  G 184
 HU2287  PID         -  HU2287
 HU2287  STATE/COUNTY-  MD/WICOMICO
 HU2287  COUNTRY     -  US
 HU2287  USGS QUAD   -  EDEN (2016)
 HU2287
 HU2287                         *CURRENT SURVEY CONTROL
 HU2287  ______________________________________________________________________
 HU2287* NAD 83(1986) POSITION- 38 20 53.     (N) 075 42 32.     (W)   SCALED
 HU2287* NAVD 88 ORTHO HEIGHT -     3.303 (meters)       10.84  (feet) ADJUSTED
 HU2287  ______________________________________________________________________
 HU2287  GEOID HEIGHT    -        -35.770 (meters)                     GEOID18
 HU2287  DYNAMIC HEIGHT  -          3.301 (meters)       10.83  (feet) COMP
 HU2287  MODELED GRAVITY -    980,003.9   (mgal)                       NAVD 88
 HU2287
 HU2287  VERT ORDER      -  SECOND    CLASS I
 HU2287
 HU2287.The horizontal coordinates were scaled from a map and have
 HU2287.an estimated accuracy of +/- 6 seconds.
 HU2287
 HU2287.The orthometric height was determined by differential leveling and
 HU2287.adjusted by the NATIONAL GEODETIC SURVEY
 HU2287.in June 1991.
 HU2287
 HU2287.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2287.GEOID18 height accuracy estimate available here.
 HU2287
 HU2287.Click photographs - Photos may exist for this station.
 HU2287
 HU2287.The dynamic height is computed by dividing the NAVD 88
 HU2287.geopotential number by the normal gravity value computed on the
 HU2287.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2287.degrees latitude (g = 980.6199 gals.).
 HU2287
 HU2287.The modeled gravity was interpolated from observed gravity values.
 HU2287
 HU2287;                    North         East    Units  Estimated Accuracy
 HU2287;SPC MD       -    76,440.      512,860.      MT  (+/- 180 meters Scaled)
 HU2287
 HU2287_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH380446(NAD 83)
 HU2287
 HU2287                          SUPERSEDED SURVEY CONTROL
 HU2287
 HU2287  NGVD 29 (06/12/91)    3.555  (m)           11.66   (f) ADJUSTED    2 1
 HU2287
 HU2287.Superseded values are not recommended for survey control.
 HU2287
 HU2287.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2287.See file dsdata.pdf to determine how the superseded data were derived.
 HU2287
 HU2287_MARKER: I = METAL ROD
 HU2287_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2287_STAMPING: G 184 1990
 HU2287_MARK LOGO: NGS
 HU2287_PROJECTION: RECESSED 2 CENTIMETERS
 HU2287_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2287_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2287_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2287+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2287_ROD/PIPE-DEPTH: 16.5 meters
 HU2287_SLEEVE-DEPTH  : 0.9 meters
 HU2287
 HU2287  HISTORY     - Date     Condition        Report By
 HU2287  HISTORY     - 1990     MONUMENTED       NGS
 HU2287
 HU2287                          STATION DESCRIPTION
 HU2287
 HU2287'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2287'9.4 KM (5.84 MI) SOUTHEASTERLY ALONG PEMBERTON DRIVE FROM THE
 HU2287'JUNCTION OF ELLEGOOD STREET IN SALISBURY, 0.3 KM (0.19 MI) EAST OF
 HU2287'THE INTERSECTION OF WELLS ROAD, 22.0 M (72.18 FT) EAST OF UTILITY
 HU2287'POLE NUMBER 43698 92540, 18.2 M (59.71 FT) WEST OF THE CENTER OF A
 HU2287'DRIVEWAY, 14.0 M (45.93 FT) NORTH OF THE CENTER OF THE DRIVE, 10.5 M
 HU2287'(34.45 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF A HOUSE, AND LEVEL
 HU2287'WITH THE DRIVE.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 HU2287'LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY CURTIS WILLIAMS, 364
 HU2287'A UPPER FERRY ROAD, EDEN, MD 21801, TELEPHONE NUMBER (301) 742-9249.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2225 ***********************************************************************
 HU2225  DESIGNATION -  G 185
 HU2225  PID         -  HU2225
 HU2225  STATE/COUNTY-  MD/WICOMICO
 HU2225  COUNTRY     -  US
 HU2225  USGS QUAD   -  HEBRON (2016)
 HU2225
 HU2225                         *CURRENT SURVEY CONTROL
 HU2225  ______________________________________________________________________
 HU2225* NAD 83(1986) POSITION- 38 22 44.7    (N) 075 44 21.1    (W)   HD_HELD2
 HU2225* NAVD 88 ORTHO HEIGHT -     5.713 (meters)       18.74  (feet) ADJUSTED
 HU2225  ______________________________________________________________________
 HU2225  GEOID HEIGHT    -        -35.694 (meters)                     GEOID18
 HU2225  DYNAMIC HEIGHT  -          5.709 (meters)       18.73  (feet) COMP
 HU2225  MODELED GRAVITY -    980,008.0   (mgal)                       NAVD 88
 HU2225
 HU2225  VERT ORDER      -  SECOND    CLASS I
 HU2225
 HU2225.The horizontal coordinates were established by autonomous hand held GPS
 HU2225.observations and have an estimated accuracy of +/- 10 meters.
 HU2225
 HU2225.The orthometric height was determined by differential leveling and
 HU2225.adjusted by the NATIONAL GEODETIC SURVEY
 HU2225.in June 1991.
 HU2225
 HU2225.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2225.GEOID18 height accuracy estimate available here.
 HU2225
 HU2225.Click photographs - Photos may exist for this station.
 HU2225
 HU2225.The dynamic height is computed by dividing the NAVD 88
 HU2225.geopotential number by the normal gravity value computed on the
 HU2225.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2225.degrees latitude (g = 980.6199 gals.).
 HU2225
 HU2225.The modeled gravity was interpolated from observed gravity values.
 HU2225
 HU2225;                    North         East    Units  Estimated Accuracy
 HU2225;SPC MD       -    79,842.      510,162.      MT  (+/- 10 meters HH2 GPS)
 HU2225
 HU2225_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3543548135(NAD 83)
 HU2225
 HU2225                          SUPERSEDED SURVEY CONTROL
 HU2225
 HU2225  NGVD 29 (06/12/91)    5.963  (m)           19.56   (f) ADJUSTED    2 1
 HU2225
 HU2225.Superseded values are not recommended for survey control.
 HU2225
 HU2225.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2225.See file dsdata.pdf to determine how the superseded data were derived.
 HU2225
 HU2225_MARKER: F = FLANGE-ENCASED ROD
 HU2225_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2225_STAMPING: G 185 1990
 HU2225_MARK LOGO: NGS
 HU2225_PROJECTION: RECESSED 4 CENTIMETERS
 HU2225_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2225_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2225_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2225+SATELLITE: SATELLITE OBSERVATIONS - September 07, 2018
 HU2225_ROD/PIPE-DEPTH: 18.2 meters
 HU2225_SLEEVE-DEPTH  : 0.9 meters
 HU2225
 HU2225  HISTORY     - Date     Condition        Report By
 HU2225  HISTORY     - 1990     MONUMENTED       NGS
 HU2225  HISTORY     - 20040719 GOOD             GEOCAC
 HU2225  HISTORY     - 20180907 GOOD             PROFLN
 HU2225
 HU2225                          STATION DESCRIPTION
 HU2225
 HU2225'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2225'6.3 KM (3.91 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU2225'ROAD) FROM THE JUNCTION OF RAILROAD AVENUE IN HEBRON, 18.1 M (59.38
 HU2225'FT) NORTH-NORTHWEST OF UTILITY POLE NUMBER 42850 93665, 11.8 M (38.71
 HU2225'FT) NORTHEAST OF THE CENTER OF ATHOL ROAD, 9.4 M (30.84 FT) NORTHWEST
 HU2225'OF THE CENTERLINE OF THE HIGHWAY, 0.5 M (1.64 FT) SOUTHEAST OF A
 HU2225'WITNESS POST, AND 0.3 M (0.98 FT) ABOVE THE LEVEL OF THE HIGHWAY.
 HU2225'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2225
 HU2225                          STATION RECOVERY (2004)
 HU2225
 HU2225'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2225'RECOVERED IN GOOD CONDITION.
 HU2225
 HU2225                          STATION RECOVERY (2018)
 HU2225
 HU2225'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2018 (JRO)
 HU2225'THE MARK IS 61 FT (18.6 M) NORTH-NORTHWEST AND ACROSS THE HIGHWAY FROM
 HU2225'A NEW POLE WITH THE SAME NUMBER, 18.5 FT (5.6 M) NORTH-NORTHEAST OF
 HU2225'THE NORTHEAST END OF A 15 INCH REINFORCED CONCRETE PIPE, IN A 3 FT
 HU2225'(0.9 M) DIAMETER DEPRESSION DUG DOWN THROUGH ROOTS TO THE LEVEL OF THE
 HU2225'LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2140 ***********************************************************************
 HU2140  DESIGNATION -  G 186
 HU2140  PID         -  HU2140
 HU2140  STATE/COUNTY-  MD/WICOMICO
 HU2140  COUNTRY     -  US
 HU2140  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2140
 HU2140                         *CURRENT SURVEY CONTROL
 HU2140  ______________________________________________________________________
 HU2140* NAD 83(1986) POSITION- 38 27 50.2    (N) 075 45 26.6    (W)   HD_HELD2
 HU2140* NAVD 88 ORTHO HEIGHT -     8.264 (meters)       27.11  (feet) ADJUSTED
 HU2140  ______________________________________________________________________
 HU2140  GEOID HEIGHT    -        -35.578 (meters)                     GEOID18
 HU2140  DYNAMIC HEIGHT  -          8.259 (meters)       27.10  (feet) COMP
 HU2140  MODELED GRAVITY -    980,014.6   (mgal)                       NAVD 88
 HU2140
 HU2140  VERT ORDER      -  SECOND    CLASS I
 HU2140
 HU2140.The horizontal coordinates were established by autonomous hand held GPS
 HU2140.observations and have an estimated accuracy of +/- 10 meters.
 HU2140
 HU2140.The orthometric height was determined by differential leveling and
 HU2140.adjusted by the NATIONAL GEODETIC SURVEY
 HU2140.in June 1991.
 HU2140
 HU2140.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2140.GEOID18 height accuracy estimate available here.
 HU2140
 HU2140.Click photographs - Photos may exist for this station.
 HU2140
 HU2140.The dynamic height is computed by dividing the NAVD 88
 HU2140.geopotential number by the normal gravity value computed on the
 HU2140.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2140.degrees latitude (g = 980.6199 gals.).
 HU2140
 HU2140.The modeled gravity was interpolated from observed gravity values.
 HU2140
 HU2140;                    North         East    Units  Estimated Accuracy
 HU2140;SPC MD       -    89,239.      508,444.      MT  (+/- 10 meters HH2 GPS)
 HU2140
 HU2140_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3392357564(NAD 83)
 HU2140
 HU2140                          SUPERSEDED SURVEY CONTROL
 HU2140
 HU2140  NGVD 29 (06/12/91)    8.508  (m)           27.91   (f) ADJUSTED    2 1
 HU2140
 HU2140.Superseded values are not recommended for survey control.
 HU2140
 HU2140.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2140.See file dsdata.pdf to determine how the superseded data were derived.
 HU2140
 HU2140_MARKER: F = FLANGE-ENCASED ROD
 HU2140_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2140_STAMPING: G 186 1990
 HU2140_MARK LOGO: NGS
 HU2140_PROJECTION: RECESSED 5 CENTIMETERS
 HU2140_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2140_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2140_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2140+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2017
 HU2140_ROD/PIPE-DEPTH: 27.9 meters
 HU2140_SLEEVE-DEPTH  : 0.5 meters
 HU2140
 HU2140  HISTORY     - Date     Condition        Report By
 HU2140  HISTORY     - 1990     MONUMENTED       NGS
 HU2140  HISTORY     - 20040719 MARK NOT FOUND   GEOCAC
 HU2140  HISTORY     - 20170606 GOOD             ARCSHE
 HU2140
 HU2140                          STATION DESCRIPTION
 HU2140
 HU2140'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2140'IN MARDELA SPRINGS, AT THE INTERSECTION OF U.S. HIGHWAY 50 AND
 HU2140'STATION STREET, IN THE MEDIAN OF THE HIGHWAY, 39.0 M (127.95 FT)
 HU2140'SOUTHEAST OF UTILITY POLE NUMBER 42345 96771, 16.6 M (54.46 FT) EAST
 HU2140'OF THE EXTENDED CENTER OF THE STREET, 10.7 M (35.10 FT) NORTH OF THE
 HU2140'CENTERLINE OF THE EASTBOUND LANES OF THE HIGHWAY, AND LEVEL WITH THE
 HU2140'HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO
 HU2140'CAP.
 HU2140
 HU2140                          STATION RECOVERY (2004)
 HU2140
 HU2140'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2140'MARK NOT FOUND.
 HU2140
 HU2140                          STATION RECOVERY (2017)
 HU2140
 HU2140'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2140'THE MARK IS AT THE T-INTERSECTION OF STATION STREET THAT HEADS SOUTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2258 ***********************************************************************
 HU2258  DESIGNATION -  G 187
 HU2258  PID         -  HU2258
 HU2258  STATE/COUNTY-  MD/WICOMICO
 HU2258  COUNTRY     -  US
 HU2258  USGS QUAD   -  WETIPQUIN (2016)
 HU2258
 HU2258                         *CURRENT SURVEY CONTROL
 HU2258  ______________________________________________________________________
 HU2258* NAD 83(1986) POSITION- 38 19 18.8    (N) 075 52 27.1    (W)   HD_HELD1
 HU2258* NAVD 88 ORTHO HEIGHT -     6.651 (meters)       21.82  (feet) ADJUSTED
 HU2258  ______________________________________________________________________
 HU2258  GEOID HEIGHT    -        -35.681 (meters)                     GEOID18
 HU2258  DYNAMIC HEIGHT  -          6.646 (meters)       21.80  (feet) COMP
 HU2258  MODELED GRAVITY -    979,997.8   (mgal)                       NAVD 88
 HU2258
 HU2258  VERT ORDER      -  SECOND    CLASS I
 HU2258
 HU2258.The horizontal coordinates were determined by differentially corrected
 HU2258.hand held GPS observations or other comparable positioning techniques
 HU2258.and have an estimated accuracy of +/- 3 meters.
 HU2258
 HU2258.The orthometric height was determined by differential leveling and
 HU2258.adjusted by the NATIONAL GEODETIC SURVEY
 HU2258.in June 1991.
 HU2258
 HU2258.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2258.GEOID18 height accuracy estimate available here.
 HU2258
 HU2258.Click photographs - Photos may exist for this station.
 HU2258
 HU2258.The dynamic height is computed by dividing the NAVD 88
 HU2258.geopotential number by the normal gravity value computed on the
 HU2258.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2258.degrees latitude (g = 980.6199 gals.).
 HU2258
 HU2258.The modeled gravity was interpolated from observed gravity values.
 HU2258
 HU2258;                    North         East    Units  Estimated Accuracy
 HU2258;SPC MD       -    73,339.6     498,445.6     MT  (+/- 3 meters HH1 GPS) 
 HU2258
 HU2258_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2358441891(NAD 83)
 HU2258
 HU2258                          SUPERSEDED SURVEY CONTROL
 HU2258
 HU2258  NGVD 29 (06/12/91)    6.905  (m)           22.65   (f) ADJUSTED    2 1
 HU2258
 HU2258.Superseded values are not recommended for survey control.
 HU2258
 HU2258.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2258.See file dsdata.pdf to determine how the superseded data were derived.
 HU2258
 HU2258_MARKER: F = FLANGE-ENCASED ROD
 HU2258_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2258_STAMPING: G 187 1990
 HU2258_MARK LOGO: NGS
 HU2258_PROJECTION: RECESSED 17 CENTIMETERS
 HU2258_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2258_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2258_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2258+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2019
 HU2258_ROD/PIPE-DEPTH: 15.8 meters
 HU2258_SLEEVE-DEPTH  : 0.9 meters
 HU2258
 HU2258  HISTORY     - Date     Condition        Report By
 HU2258  HISTORY     - 1990     MONUMENTED       NGS
 HU2258  HISTORY     - 20190514 GOOD             PROFLN
 HU2258
 HU2258                          STATION DESCRIPTION
 HU2258
 HU2258'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2258'1.0 KM (0.62 MI) NORTHEASTERLY ALONG STATE HIGHWAY 349 FROM THE POST
 HU2258'OFFICE IN BIVALVE, THENCE 0.8 KM (0.50 MI) NORTHEASTERLY ALONG
 HU2258'TYASKIN NANTICOKE ROAD, THENCE 0.5 KM (0.31 MI) NORTHERLY ALONG
 HU2258'TYASKIN CHURCH ROAD, 36.0 M (118.11 FT) SOUTH-SOUTHEAST OF THE
 HU2258'SOUTHEAST CORNER OF A HOUSE, 3.7 M (12.14 FT) WEST OF AND LEVEL WITH
 HU2258'THE HIGHWAY CENTER, 1.0 M (3.28 FT) NORTH OF UTILITY POLE NUMBER
 HU2258'38960 91627, 0.5 M (1.64 FT) EAST OF A WITNESS POST, AND 0.3 M (0.98
 HU2258'FT) SOUTH OF THE EXTENDED CENTER OF TYASKIN CHURCH ROAD.
 HU2258'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2258
 HU2258                          STATION RECOVERY (2019)
 HU2258
 HU2258'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2258'THE LOGO CAP IS RECESSED 0.4 FT (12 CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2407 ***********************************************************************
 HU2407  DESIGNATION -  G 188
 HU2407  PID         -  HU2407
 HU2407  STATE/COUNTY-  MD/WICOMICO
 HU2407  COUNTRY     -  US
 HU2407  USGS QUAD   -  DELMAR (2016)
 HU2407
 HU2407                         *CURRENT SURVEY CONTROL
 HU2407  ______________________________________________________________________
 HU2407* NAD 83(1986) POSITION- 38 25 30.     (N) 075 32 23.     (W)   SCALED
 HU2407* NAVD 88 ORTHO HEIGHT -    14.797 (meters)       48.55  (feet) ADJUSTED
 HU2407  ______________________________________________________________________
 HU2407  GEOID HEIGHT    -        -35.781 (meters)                     GEOID18
 HU2407  DYNAMIC HEIGHT  -         14.788 (meters)       48.52  (feet) COMP
 HU2407  MODELED GRAVITY -    980,010.5   (mgal)                       NAVD 88
 HU2407
 HU2407  VERT ORDER      -  SECOND    CLASS I
 HU2407
 HU2407.The horizontal coordinates were scaled from a map and have
 HU2407.an estimated accuracy of +/- 6 seconds.
 HU2407
 HU2407.The orthometric height was determined by differential leveling and
 HU2407.adjusted by the NATIONAL GEODETIC SURVEY
 HU2407.in June 1991.
 HU2407
 HU2407.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2407.GEOID18 height accuracy estimate available here.
 HU2407
 HU2407.Click photographs - Photos may exist for this station.
 HU2407
 HU2407.The dynamic height is computed by dividing the NAVD 88
 HU2407.geopotential number by the normal gravity value computed on the
 HU2407.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2407.degrees latitude (g = 980.6199 gals.).
 HU2407
 HU2407.The modeled gravity was interpolated from observed gravity values.
 HU2407
 HU2407;                    North         East    Units  Estimated Accuracy
 HU2407;SPC MD       -    85,200.      527,510.      MT  (+/- 180 meters Scaled)
 HU2407
 HU2407_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH528531(NAD 83)
 HU2407
 HU2407                          SUPERSEDED SURVEY CONTROL
 HU2407
 HU2407  NGVD 29 (06/12/91)   15.050  (m)           49.38   (f) ADJUSTED    2 1
 HU2407
 HU2407.Superseded values are not recommended for survey control.
 HU2407
 HU2407.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2407.See file dsdata.pdf to determine how the superseded data were derived.
 HU2407
 HU2407_MARKER: I = METAL ROD
 HU2407_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2407_STAMPING: G 188 1990
 HU2407_MARK LOGO: NGS
 HU2407_PROJECTION: RECESSED 2 CENTIMETERS
 HU2407_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2407_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2407_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2407+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2407_ROD/PIPE-DEPTH: 24.3 meters
 HU2407_SLEEVE-DEPTH  : 0.9 meters
 HU2407
 HU2407  HISTORY     - Date     Condition        Report By
 HU2407  HISTORY     - 1990     MONUMENTED       NGS
 HU2407
 HU2407                          STATION DESCRIPTION
 HU2407
 HU2407'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2407'2.8 KM (1.74 MI) EASTERLY ALONG ZION ROAD FROM THE JUNCTION OF U.S.
 HU2407'HIGHWAY 13 BUSINESS IN SALISBURY, THENCE 2.3 KM (1.43 MI) NORTHERLY
 HU2407'ALONG BROWN ROAD, THENCE 0.2 KM (0.12 MI) NORTHWEST ALONG DAGSBORO
 HU2407'ROAD, THENCE 0.7 KM (0.43 MI) NORTHEASTERLY ALONG RUM RIDGE ROAD,
 HU2407'12.5 M (41.01 FT) SOUTHEAST OF UTILITY POLE NUMBER 5245 94, 8.5 M
 HU2407'(27.89 FT) NORTH OF THE CENTER OF CARIOCA ROAD, 6.9 M (22.64 FT)
 HU2407'SOUTHEAST OF AND LEVEL WITH THE CENTER OF THE ROAD, 2.7 M (8.86 FT)
 HU2407'SOUTHWEST OF A UTILITY POLE, AND 2.1 M (6.89 FT) EAST OF UTILITY
 HU2407'PEDESTAL NUMBER 9.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2407'5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY BOBBY BANKS,
 HU2407'RT. 3 BOX 225, DELMAR, MD 21875, TELEPHONE NUMBER (301) 543-0584.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2551 ***********************************************************************
 HU2551  DESIGNATION -  G 189
 HU2551  PID         -  HU2551
 HU2551  STATE/COUNTY-  MD/WICOMICO
 HU2551  COUNTRY     -  US
 HU2551  USGS QUAD   -  PITTSVILLE (2016)
 HU2551
 HU2551                         *CURRENT SURVEY CONTROL
 HU2551  ______________________________________________________________________
 HU2551* NAD 83(1986) POSITION- 38 26 29.     (N) 075 26 53.     (W)   SCALED
 HU2551* NAVD 88 ORTHO HEIGHT -    18.854 (meters)       61.86  (feet) ADJUSTED
 HU2551  ______________________________________________________________________
 HU2551  GEOID HEIGHT    -        -35.812 (meters)                     GEOID18
 HU2551  DYNAMIC HEIGHT  -         18.842 (meters)       61.82  (feet) COMP
 HU2551  MODELED GRAVITY -    980,011.5   (mgal)                       NAVD 88
 HU2551
 HU2551  VERT ORDER      -  SECOND    CLASS I
 HU2551
 HU2551.The horizontal coordinates were scaled from a map and have
 HU2551.an estimated accuracy of +/- 6 seconds.
 HU2551
 HU2551.The orthometric height was determined by differential leveling and
 HU2551.adjusted by the NATIONAL GEODETIC SURVEY
 HU2551.in June 1991.
 HU2551
 HU2551.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2551.GEOID18 height accuracy estimate available here.
 HU2551
 HU2551.Click photographs - Photos may exist for this station.
 HU2551
 HU2551.The dynamic height is computed by dividing the NAVD 88
 HU2551.geopotential number by the normal gravity value computed on the
 HU2551.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2551.degrees latitude (g = 980.6199 gals.).
 HU2551
 HU2551.The modeled gravity was interpolated from observed gravity values.
 HU2551
 HU2551;                    North         East    Units  Estimated Accuracy
 HU2551;SPC MD       -    87,150.      535,480.      MT  (+/- 180 meters Scaled)
 HU2551
 HU2551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH608548(NAD 83)
 HU2551
 HU2551                          SUPERSEDED SURVEY CONTROL
 HU2551
 HU2551  NGVD 29 (06/12/91)   19.101  (m)           62.67   (f) ADJUSTED    2 1
 HU2551
 HU2551.Superseded values are not recommended for survey control.
 HU2551
 HU2551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2551.See file dsdata.pdf to determine how the superseded data were derived.
 HU2551
 HU2551_MARKER: I = METAL ROD
 HU2551_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2551_STAMPING: G 189 1990
 HU2551_MARK LOGO: NGS
 HU2551_PROJECTION: RECESSED 2 CENTIMETERS
 HU2551_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2551_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2551_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2551+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2551_ROD/PIPE-DEPTH: 30.3 meters
 HU2551_SLEEVE-DEPTH  : 0.9 meters
 HU2551
 HU2551  HISTORY     - Date     Condition        Report By
 HU2551  HISTORY     - 1990     MONUMENTED       NGS
 HU2551
 HU2551                          STATION DESCRIPTION
 HU2551
 HU2551'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2551'5.7 KM (3.54 MI) NORTHWESTERLY ALONG PITTSVILLE ROAD FROM THE JUNCTION
 HU2551'OF STATE HIGHWAY 353 (PITTSVILLE DELAWARE ROAD) IN PITTSVILLE, THENCE
 HU2551'0.2 KM (0.12 MI) NORTHEASTERLY ALONG GUY WARD ROAD, 13.0 M
 HU2551'(42.65 FT) SOUTHEAST OF AND LEVEL WITH THE ROAD CENTER, 6.5 M
 HU2551'(21.33 FT) SOUTHWEST OF THE CENTER OF A DRIVEWAY, 3.0 M (9.84 FT)
 HU2551'SOUTHEAST OF ELECTRIC TRANSFORMER BOX NUMBER 701 160 3, AND 0.3 M
 HU2551'(0.98 FT) NORTHEAST OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM
 HU2551'POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY
 HU2551'OWNED BY MR. ROBERT MESCH, P.O. BOX 9, PARSONSBURG, MD 21849,
 HU2551'TELEPHONE NUMBER (301) 896-9073.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8801 ***********************************************************************
 HV8801  DESIGNATION -  G 190
 HV8801  PID         -  HV8801
 HV8801  STATE/COUNTY-  MD/CHARLES
 HV8801  COUNTRY     -  US
 HV8801  USGS QUAD   -  NANJEMOY (2016)
 HV8801
 HV8801                         *CURRENT SURVEY CONTROL
 HV8801  ______________________________________________________________________
 HV8801* NAD 83(1986) POSITION- 38 22 49.     (N) 077 13 23.     (W)   SCALED
 HV8801* NAVD 88 ORTHO HEIGHT -     9.218 (meters)       30.24  (feet) ADJUSTED
 HV8801  ______________________________________________________________________
 HV8801  GEOID HEIGHT    -        -32.756 (meters)                     GEOID18
 HV8801  DYNAMIC HEIGHT  -          9.213 (meters)       30.23  (feet) COMP
 HV8801  MODELED GRAVITY -    980,029.3   (mgal)                       NAVD 88
 HV8801
 HV8801  VERT ORDER      -  FIRST     CLASS II
 HV8801
 HV8801.The horizontal coordinates were scaled from a map and have
 HV8801.an estimated accuracy of +/- 6 seconds.
 HV8801
 HV8801.The orthometric height was determined by differential leveling and
 HV8801.adjusted by the NATIONAL GEODETIC SURVEY
 HV8801.in June 1991.
 HV8801
 HV8801.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8801.GEOID18 height accuracy estimate available here.
 HV8801
 HV8801.Click photographs - Photos may exist for this station.
 HV8801
 HV8801.The dynamic height is computed by dividing the NAVD 88
 HV8801.geopotential number by the normal gravity value computed on the
 HV8801.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8801.degrees latitude (g = 980.6199 gals.).
 HV8801
 HV8801.The modeled gravity was interpolated from observed gravity values.
 HV8801
 HV8801;                    North         East    Units  Estimated Accuracy
 HV8801;SPC MD       -    79,240.      380,510.      MT  (+/- 180 meters Scaled)
 HV8801
 HV8801_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH058503(NAD 83)
 HV8801
 HV8801                          SUPERSEDED SURVEY CONTROL
 HV8801
 HV8801.No superseded survey control is available for this station.
 HV8801
 HV8801_MARKER: I = METAL ROD
 HV8801_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8801_STAMPING: G 190 1990
 HV8801_MARK LOGO: NGS
 HV8801_PROJECTION: FLUSH
 HV8801_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8801_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8801_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8801+SATELLITE: SATELLITE OBSERVATIONS - October 22, 2014
 HV8801_ROD/PIPE-DEPTH: 5.8 meters
 HV8801
 HV8801  HISTORY     - Date     Condition        Report By
 HV8801  HISTORY     - 1990     MONUMENTED       NGS
 HV8801  HISTORY     - 20141022 GOOD             GPSSS
 HV8801
 HV8801                          STATION DESCRIPTION
 HV8801
 HV8801'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8801'18.2 KM (11.31 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 6 FROM THE
 HV8801'JUNCTION OF U.S. HIGHWAY 301 IN LA PLATA, THENCE 7.7 KM (4.78 MI)
 HV8801'SOUTHWESTERLY ALONG STATE HIGHWAY 425, THENCE 2.4 KM (1.49 MI)
 HV8801'SOUTHERLY ALONG STATE HIGHWAY 6, THENCE 5.0 KM (3.11 MI)
 HV8801'SOUTHWESTERLY ALONG MARYLAND POINT ROAD, THENCE 0.7 KM (0.43 MI)
 HV8801'WESTERLY ALONG STATE HIGHWAY 224, 13.2 M (43.31 FT) SOUTHWEST OF AND
 HV8801'LEVEL WITH THE CENTERLINE OF THE HIGHWAY, 7.4 M (24.28 FT) NORTHWEST
 HV8801'OF THE CENTER OF THE ROAD TO THE OBSERVATORY, 4.2 M (13.78 FT)
 HV8801'EAST-NORTHEAST OF UTILTIY POLE NUMBER 85, 0.6 M (1.97 FT) SOUTHWEST
 HV8801'OF THE SOUTHWEST LEG OF THE MARYLAND POINT OBSERVATORY SIGN, AND 0.3
 HV8801'M (0.98 FT) NORTHEAST OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM
 HV8801'POINT IS THROUGH A 5-INCH LOGO CAP.
 HV8801
 HV8801                          STATION RECOVERY (2014)
 HV8801
 HV8801'RECOVERY NOTE BY GPS SALES AND SERVICES 2014 (BB)
 HV8801'IN WOODED AREA BUT LONG STATIC SESSIONS PROVIDED USABLE GPS RESULTS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8790 ***********************************************************************
 HV8790  DESIGNATION -  G 191
 HV8790  PID         -  HV8790
 HV8790  STATE/COUNTY-  MD/CHARLES
 HV8790  COUNTRY     -  US
 HV8790  USGS QUAD   -  MATHIAS POINT (2019)
 HV8790
 HV8790                         *CURRENT SURVEY CONTROL
 HV8790  ______________________________________________________________________
 HV8790* NAD 83(1986) POSITION- 38 28 57.     (N) 077 05 57.     (W)   SCALED
 HV8790* NAVD 88 ORTHO HEIGHT -    42.246 (meters)      138.60  (feet) ADJUSTED
 HV8790  ______________________________________________________________________
 HV8790  GEOID HEIGHT    -        -32.848 (meters)                     GEOID18
 HV8790  DYNAMIC HEIGHT  -         42.221 (meters)      138.52  (feet) COMP
 HV8790  MODELED GRAVITY -    980,041.5   (mgal)                       NAVD 88
 HV8790
 HV8790  VERT ORDER      -  FIRST     CLASS II
 HV8790
 HV8790.The horizontal coordinates were scaled from a map and have
 HV8790.an estimated accuracy of +/- 6 seconds.
 HV8790
 HV8790.The orthometric height was determined by differential leveling and
 HV8790.adjusted by the NATIONAL GEODETIC SURVEY
 HV8790.in June 1991.
 HV8790
 HV8790.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8790.GEOID18 height accuracy estimate available here.
 HV8790
 HV8790.Click photographs - Photos may exist for this station.
 HV8790
 HV8790.The dynamic height is computed by dividing the NAVD 88
 HV8790.geopotential number by the normal gravity value computed on the
 HV8790.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8790.degrees latitude (g = 980.6199 gals.).
 HV8790
 HV8790.The modeled gravity was interpolated from observed gravity values.
 HV8790
 HV8790;                    North         East    Units  Estimated Accuracy
 HV8790;SPC MD       -    90,570.      391,350.      MT  (+/- 180 meters Scaled)
 HV8790
 HV8790_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH169614(NAD 83)
 HV8790
 HV8790                          SUPERSEDED SURVEY CONTROL
 HV8790
 HV8790.No superseded survey control is available for this station.
 HV8790
 HV8790_MARKER: I = METAL ROD
 HV8790_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8790_STAMPING: G 191 1990
 HV8790_MARK LOGO: NGS
 HV8790_PROJECTION: FLUSH
 HV8790_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8790_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8790_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8790+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8790_ROD/PIPE-DEPTH: 12.4 meters
 HV8790
 HV8790  HISTORY     - Date     Condition        Report By
 HV8790  HISTORY     - 1990     MONUMENTED       NGS
 HV8790
 HV8790                          STATION DESCRIPTION
 HV8790
 HV8790'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8790'12.6 KM (7.83 MI) WESTLERLY ALONG STATE HIGHWAY 6 FROM THE JUNCTION
 HV8790'OF U.S. HIGHWAY 301 IN LA PLATA, 36.9 M (121.06 FT) NORTH OF THE
 HV8790'CENTERLINE OF THE HIGHWAY, 20.5 M (67.26 FT) SOUTHEAST OF THE
 HV8790'SOUTHEAST CORNER OF SCOTTS STORE BUILDING, 2.0 M (6.56 FT) SOUTHEAST
 HV8790'OF THE NORTHWEST END OF A FENCELINE, 1.8 M (5.91 FT) NORTHEAST OF
 HV8790'UTILITY POLE NUMBER 216, 0.3 M (0.98 FT) SOUTH-SOUTHWEST OF A WITNESS
 HV8790'POST AND FENCE, AND 0.3 M (0.98 FT) BELOW THE LEVEL OF THE HIGHWAY.
 HV8790'THE MONUMENT IS ON PROPERTY OWNED BY FRED WARD, RT 1 BOX 1229,
 HV8790'WELCOME, MD 20693, TELEPHONE NUMBER (301) 934-8606.  NOTE--ACCESS TO
 HV8790'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8861 ***********************************************************************
 HV8861  DESIGNATION -  G 192
 HV8861  PID         -  HV8861
 HV8861  STATE/COUNTY-  MD/ST MARYS
 HV8861  COUNTRY     -  US
 HV8861  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV8861
 HV8861                         *CURRENT SURVEY CONTROL
 HV8861  ______________________________________________________________________
 HV8861* NAD 83(1986) POSITION- 38 13 18.     (N) 076 26 37.     (W)   SCALED
 HV8861* NAVD 88 ORTHO HEIGHT -    25.736 (meters)       84.44  (feet) ADJUSTED
 HV8861  ______________________________________________________________________
 HV8861  GEOID HEIGHT    -        -34.640 (meters)                     GEOID18
 HV8861  DYNAMIC HEIGHT  -         25.720 (meters)       84.38  (feet) COMP
 HV8861  MODELED GRAVITY -    980,002.9   (mgal)                       NAVD 88
 HV8861
 HV8861  VERT ORDER      -  SECOND    CLASS I
 HV8861
 HV8861.The horizontal coordinates were scaled from a map and have
 HV8861.an estimated accuracy of +/- 6 seconds.
 HV8861
 HV8861.The orthometric height was determined by differential leveling and
 HV8861.adjusted by the NATIONAL GEODETIC SURVEY
 HV8861.in June 1991.
 HV8861
 HV8861.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8861.GEOID18 height accuracy estimate available here.
 HV8861
 HV8861.Click photographs - Photos may exist for this station.
 HV8861
 HV8861.The dynamic height is computed by dividing the NAVD 88
 HV8861.geopotential number by the normal gravity value computed on the
 HV8861.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8861.degrees latitude (g = 980.6199 gals.).
 HV8861
 HV8861.The modeled gravity was interpolated from observed gravity values.
 HV8861
 HV8861;                    North         East    Units  Estimated Accuracy
 HV8861;SPC MD       -    61,760.      448,720.      MT  (+/- 180 meters Scaled)
 HV8861
 HV8861_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH736313(NAD 83)
 HV8861
 HV8861                          SUPERSEDED SURVEY CONTROL
 HV8861
 HV8861.No superseded survey control is available for this station.
 HV8861
 HV8861_MARKER: DV = VERTICAL CONTROL DISK
 HV8861_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8861_STAMPING: G 192 1990
 HV8861_MARK LOGO: NGS
 HV8861_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8861_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8861+STABILITY: SURFACE MOTION
 HV8861_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8861+SATELLITE: SATELLITE OBSERVATIONS - February 23, 2009
 HV8861
 HV8861  HISTORY     - Date     Condition        Report By
 HV8861  HISTORY     - 1990     MONUMENTED       NGS
 HV8861  HISTORY     - 19990214 GOOD             USPSQD
 HV8861  HISTORY     - 20020329 GOOD             MDSHA
 HV8861  HISTORY     - 20050416 GOOD             USPSQD
 HV8861  HISTORY     - 20090223 GOOD             MDSHA
 HV8861
 HV8861                          STATION DESCRIPTION
 HV8861
 HV8861'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8861'5.1 KM (3.2 MI) EASTERLY ALONG STATE HIGHWAY 5 FROM THE JUNCTION OF
 HV8861'STATE HIGHWAY 246 IN GREAT MILLS, 0.2 KM (0.1 MI) WEST OF THE
 HV8861'INTERSECTION OF MANOR DRIVE, 56.8 M (186.4 FT) EAST OF UTILITY POLE
 HV8861'NUMBER 93 WITH ONE GUY WIRE, 13.7 M (44.9 FT) WEST OF UTILITY POLE
 HV8861'NUMBER 94 WITH ONE GUY WIRE, 11.2 M (36.7 FT) SOUTH OF THE HIGHWAY
 HV8861'CENTERLINE, 0.4 M (1.3 FT) NORTH OF A WITNESSPOST AND FENCE, 0.3 M
 HV8861'(1.0 FT) BELOW THE LEVEL OF THE HIGHWAY, AND THE MONUMENT PROJECTS
 HV8861'0.05 M (0.16 FT) ABOVE THE GROUND SURFACE.
 HV8861
 HV8861                          STATION RECOVERY (1999)
 HV8861
 HV8861'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV8861'RECOVERED IN GOOD CONDITION.
 HV8861
 HV8861                          STATION RECOVERY (2002)
 HV8861
 HV8861'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV8861'RECOVERED AS DESCRIBED.
 HV8861
 HV8861                          STATION RECOVERY (2005)
 HV8861
 HV8861'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPF)
 HV8861'HV8861
 HV8861'
 HV8861'THE DESCRIPTION HAS BEEN MODIFIED TO REFLECT ADDITIONAL REFERENCED
 HV8861'POINTS AND DISTANCES
 HV8861'
 HV8861'THE STATION IS LOCATED ALONG STATE HIGHWAY 5, 3.2 MI (5.1 KM)
 HV8861'SOUTHEASTERLY OF THE INTERSECTION OF STATE HIGHWAYS 5 AND 246 (GREAT
 HV8861'MILLS ROAD).  TO REACH THE STATION FROM THE INTERSECTION OF STATE
 HV8861'HIGHWAYS 246 AND 5 (LEONARDTOWN POINT LOOKOUT ROAD) AT GREAT MILLS,
 HV8861'MD., GO SOUTHEAST ON STATE HIGHWAY 5 FOR 3.2 MI (5.1 KM) TO STATION ON
 HV8861'THE RIGHT.
 HV8861'STATION IS 45 FT (13.6 M) SOUTHEASTERLY OF JANEEN PLACE AND IS 0.1 MI
 HV8861'(0.2 KM) NORTHWESTERLY OF MANOR DRIVE.  STATION IS 188 FT (57.3 M)
 HV8861'EAST OF UTILITY POLE NUMBER 93 WITH ONE GUY WIRE, 44.9 FT (13.7 M)
 HV8861'WEST OF UTILITY POLE NUMBER 94 WITH ONE GUY WIRE, 38.0 FT (11.5 M)
 HV8861'SOUTH OF THE HIGHWAY CENTERLINE, 45 FT (13.7 M) EAST AND ACROSS
 HV8861'HIGHWAY 5 FROM THE CENTERLINE OF JANEEN PLACE, 1.3 FT (0.4 M) NORTH OF
 HV8861'A WITNESS POST AND FENCE, 1.0 FT (0.3 M) BELOW THE LEVEL OF THE
 HV8861'HIGHWAY, AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
 HV8861'
 HV8861
 HV8861                          STATION RECOVERY (2009)
 HV8861
 HV8861'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 HV8861'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6660 ***********************************************************************
 JV6660  DESIGNATION -  G 194
 JV6660  PID         -  JV6660
 JV6660  STATE/COUNTY-  MD/BALTIMORE
 JV6660  COUNTRY     -  US
 JV6660  USGS QUAD   -  CURTIS BAY (2016)
 JV6660
 JV6660                         *CURRENT SURVEY CONTROL
 JV6660  ______________________________________________________________________
 JV6660* NAD 83(1986) POSITION- 39 14 42.     (N) 076 30 29.     (W)   SCALED
 JV6660* NAVD 88 ORTHO HEIGHT -     6.175 (meters)       20.26  (feet) ADJUSTED
 JV6660  ______________________________________________________________________
 JV6660  GEOID HEIGHT    -        -32.988 (meters)                     GEOID18
 JV6660  DYNAMIC HEIGHT  -          6.172 (meters)       20.25  (feet) COMP
 JV6660  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV6660
 JV6660  VERT ORDER      -  SECOND    CLASS I
 JV6660
 JV6660.The horizontal coordinates were scaled from a map and have
 JV6660.an estimated accuracy of +/- 6 seconds.
 JV6660
 JV6660.The orthometric height was determined by differential leveling and
 JV6660.adjusted by the NATIONAL GEODETIC SURVEY
 JV6660.in August 1994.
 JV6660
 JV6660.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6660.GEOID18 height accuracy estimate available here.
 JV6660
 JV6660.Click photographs - Photos may exist for this station.
 JV6660
 JV6660.The dynamic height is computed by dividing the NAVD 88
 JV6660.geopotential number by the normal gravity value computed on the
 JV6660.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6660.degrees latitude (g = 980.6199 gals.).
 JV6660
 JV6660.The modeled gravity was interpolated from observed gravity values.
 JV6660
 JV6660;                    North         East    Units  Estimated Accuracy
 JV6660;SPC MD       -   175,320.      442,470.      MT  (+/- 180 meters Scaled)
 JV6660
 JV6660_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ698450(NAD 83)
 JV6660
 JV6660                          SUPERSEDED SURVEY CONTROL
 JV6660
 JV6660.No superseded survey control is available for this station.
 JV6660
 JV6660_MARKER: DV = VERTICAL CONTROL DISK
 JV6660_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6660_STAMPING: G 194 1990
 JV6660_MARK LOGO: NGS
 JV6660_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6660_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6660+STABILITY: SURFACE MOTION
 JV6660_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6660+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2014
 JV6660
 JV6660  HISTORY     - Date     Condition        Report By
 JV6660  HISTORY     - 1990     MONUMENTED       NGS
 JV6660  HISTORY     - 19980729 GOOD             MDSHA
 JV6660  HISTORY     - 20040408 MARK NOT FOUND   URS
 JV6660  HISTORY     - 20090721 GOOD             MD-005
 JV6660  HISTORY     - 20140519 GOOD             USPSQD
 JV6660
 JV6660                          STATION DESCRIPTION
 JV6660
 JV6660'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JV6660'THE MARKER IS LOCATED ABOUT 12.9 KM (8.0 MI) SOUTHEAST OF BALTIMORE,
 JV6660'NEAR THE TOWN OF DUNDALK AND ON CITY PROPERTY.
 JV6660'TO REACH FROM THE POST OFFICE IN DUNDALK, GO SOUTH ON DUNDALK AVENUE
 JV6660'FOR 0.6 KM (0.4 MI) TO THE MARKER ON THE RIGHT.
 JV6660'IT IS 15.1 M (49.5 FT) SOUTHWEST OF A METAL LIGHT POLE, 18.1 M
 JV6660'(59.4 FT) NORTHWEST OF A WATER LINE VALVE, 21.9 M (71.9 FT) WEST OF
 JV6660'THE CENTER OF THE SOUTH BOUND LANE OF DUNDALK AVENUE, 4.4 M
 JV6660'(14.4 FT) SOUTH OF A POWERLINE POLE NUMBERED 326958 AND 0.3 M
 JV6660'(1.0 FT) NORTHEASTR OF A CARSONITE WITNESS POST.
 JV6660
 JV6660                          STATION RECOVERY (1998)
 JV6660
 JV6660'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV6660'THE MARKER IS LOCATED ABOUT 8.0 MILES (12.9 KM) SOUTHEAST OF
 JV6660'BALTIMORE, IN THE TOWN OF DUNDALK.  TO REACH THE STATION FROM THE POST
 JV6660'OFFICE IN DUNDALK PROCEED SOUTHEAST ON DUNDALK AVENUE FOR 0.4 MILES
 JV6660'(0.6 KM) TO BELCAMP ROAD LEADING EAST AND THE STATION ON THE RIGHT.
 JV6660'IT IS 49.7 FEET (15.1 M) SOUTHWEST OF A METAL LIGHT POLE, 48.0 FEET
 JV6660'(14.6 M) WEST OT THE FACE OF THE WEST CONCRETE CURD FOR SOUTH BOUND
 JV6660'DUNDALK AVENUE, 121.5 FEET (37.0 M) SOUTHWEST OF THE JUNCTION OF
 JV6660'DUNDALK AVENUE AND BELCAMP ROAD, 19.0 FEET (5.8 M) NORTH OF THE
 JV6660'NORTHERLY MOST OF TWO 6 INCH (15 CM) TREES, 9.0 FEET (2.7 M) EAST OF
 JV6660'THE TOE OF BANK.  SET FLUSH WITH THE GROUND.
 JV6660
 JV6660                          STATION RECOVERY (2004)
 JV6660
 JV6660'RECOVERY NOTE BY URS COMPANY 2004 (JP)
 JV6660'MARK NOT FOUND.
 JV6660
 JV6660                          STATION RECOVERY (2009)
 JV6660
 JV6660'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 JV6660'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (ATA).
 JV6660'THE MARKER WAS RECOVERED AS PREVIOUSLY DESCRIBED AND THE STATION IS
 JV6660'LOCATED ON THE WEST SIDE OF DUNDALK AVENUE LESS THAN 100 FEET SOUTH
 JV6660'OF THE INTERSECTION WITH BROENING ROAD.
 JV6660
 JV6660                          STATION RECOVERY (2014)
 JV6660
 JV6660'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV6660'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8916 ***********************************************************************
 HV8916  DESIGNATION -  G 195
 HV8916  PID         -  HV8916
 HV8916  STATE/COUNTY-  MD/DORCHESTER
 HV8916  COUNTRY     -  US
 HV8916  USGS QUAD   -  GOLDEN HILL (2016)
 HV8916
 HV8916                         *CURRENT SURVEY CONTROL
 HV8916  ______________________________________________________________________
 HV8916* NAD 83(1986) POSITION- 38 29 36.0    (N) 076 08 34.0    (W)   HD_HELD2
 HV8916* NAVD 88 ORTHO HEIGHT -     1.200 (meters)        3.94  (feet) ADJUSTED
 HV8916  ______________________________________________________________________
 HV8916  GEOID HEIGHT    -        -35.040 (meters)                     GEOID18
 HV8916  DYNAMIC HEIGHT  -          1.199 (meters)        3.93  (feet) COMP
 HV8916  MODELED GRAVITY -    980,012.8   (mgal)                       NAVD 88
 HV8916
 HV8916  VERT ORDER      -  SECOND    CLASS I
 HV8916
 HV8916.The horizontal coordinates were established by autonomous hand held GPS
 HV8916.observations and have an estimated accuracy of +/- 10 meters.
 HV8916
 HV8916.The orthometric height was determined by differential leveling and
 HV8916.adjusted by the NATIONAL GEODETIC SURVEY
 HV8916.in August 1994.
 HV8916
 HV8916.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8916.GEOID18 height accuracy estimate available here.
 HV8916
 HV8916.Click photographs - Photos may exist for this station.
 HV8916
 HV8916.The dynamic height is computed by dividing the NAVD 88
 HV8916.geopotential number by the normal gravity value computed on the
 HV8916.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8916.degrees latitude (g = 980.6199 gals.).
 HV8916
 HV8916.The modeled gravity was interpolated from observed gravity values.
 HV8916
 HV8916;                    North         East    Units  Estimated Accuracy
 HV8916;SPC MD       -    92,114.      474,782.      MT  (+/- 10 meters HH2 GPS)
 HV8916
 HV8916_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0034161172(NAD 83)
 HV8916
 HV8916                          SUPERSEDED SURVEY CONTROL
 HV8916
 HV8916.No superseded survey control is available for this station.
 HV8916
 HV8916_MARKER: DV = VERTICAL CONTROL DISK
 HV8916_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8916_STAMPING: G 195 1990
 HV8916_MARK LOGO: NGS
 HV8916_PROJECTION: FLUSH
 HV8916_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8916_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8916+STABILITY: SURFACE MOTION
 HV8916_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8916+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2014
 HV8916
 HV8916  HISTORY     - Date     Condition        Report By
 HV8916  HISTORY     - 1990     MONUMENTED       MDSHA
 HV8916  HISTORY     - 20060105 GOOD             USPSQD
 HV8916  HISTORY     - 20140208 GOOD             ARCSHE
 HV8916
 HV8916                          STATION DESCRIPTION
 HV8916
 HV8916'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990
 HV8916'1.3 KM (0.8 MI) SOUTHEAST ALONG STATE HIGHWAY 335 FROM THE JUNCTION OF
 HV8916'STATE HIGHWAY 16AT CHURCH CREEK, 34.0 FT (10.4 M) NORTHEAST OF THE
 HV8916'CENTERLINE OF STATE HIGHWAY 335, 8.3 FT (2.5 M) NORTH-NORTHEAST OF A
 HV8916'POWER POLE WITH NO NUMBER, 127.8 FT (39.0 M) SOUTHEAST OF THE
 HV8916'CENTERLINE OF A DRIVEWAY, 214.9 FT (65.5 M) NORTHWEST OF THE
 HV8916'CENTERLINE OF THE INTERSECTION OF STATE HIGHWAY 335 AND OLD FIELD
 HV8916'ROAD, SET IN THE TOP OF A 1.0 FT (0.3 M) ROUND CONCRETE POST FLUSH
 HV8916'WITH THE GROUND AND 1 FT (0.3 M) LOWER THAN STATE HIGHWAY 335.
 HV8916
 HV8916                          STATION RECOVERY (2006)
 HV8916
 HV8916'RECOVERY NOTE BY US POWER SQUADRON 2006 (NNH)
 HV8916'POLE MENTIONED SAYS C AND P MD IT IS A TELEPHONE POLE. IT IS QUITE
 HV8916'OVERGROWN IN THIS AREA.
 HV8916
 HV8916                          STATION RECOVERY (2014)
 HV8916
 HV8916'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV8916'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4395 ***********************************************************************
 JU4395  DESIGNATION -  G 196
 JU4395  PID         -  JU4395
 JU4395  STATE/COUNTY-  MD/QUEEN ANNES
 JU4395  COUNTRY     -  US
 JU4395  USGS QUAD   -  SUDLERSVILLE (2017)
 JU4395
 JU4395                         *CURRENT SURVEY CONTROL
 JU4395  ______________________________________________________________________
 JU4395* NAD 83(1986) POSITION- 39 14 06.3    (N) 075 52 30.2    (W)   HD_HELD2
 JU4395* NAVD 88 ORTHO HEIGHT -    17.342 (meters)       56.90  (feet) ADJUSTED
 JU4395  ______________________________________________________________________
 JU4395  GEOID HEIGHT    -        -33.639 (meters)                     GEOID18
 JU4395  DYNAMIC HEIGHT  -         17.333 (meters)       56.87  (feet) COMP
 JU4395  MODELED GRAVITY -    980,108.2   (mgal)                       NAVD 88
 JU4395
 JU4395  VERT ORDER      -  SECOND    CLASS I
 JU4395
 JU4395.The horizontal coordinates were established by autonomous hand held GPS
 JU4395.observations and have an estimated accuracy of +/- 10 meters.
 JU4395
 JU4395.The orthometric height was determined by differential leveling and
 JU4395.adjusted by the NATIONAL GEODETIC SURVEY
 JU4395.in July 1996.
 JU4395
 JU4395.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4395.GEOID18 height accuracy estimate available here.
 JU4395
 JU4395.Click photographs - Photos may exist for this station.
 JU4395
 JU4395.The dynamic height is computed by dividing the NAVD 88
 JU4395.geopotential number by the normal gravity value computed on the
 JU4395.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4395.degrees latitude (g = 980.6199 gals.).
 JU4395
 JU4395.The modeled gravity was interpolated from observed gravity values.
 JU4395
 JU4395;                    North         East    Units  Estimated Accuracy
 JU4395;SPC MD       -   174,702.      497,121.      MT  (+/- 10 meters HH2 GPS)
 JU4395
 JU4395_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2447843229(NAD 83)
 JU4395
 JU4395                          SUPERSEDED SURVEY CONTROL
 JU4395
 JU4395.No superseded survey control is available for this station.
 JU4395
 JU4395_MARKER: DD = SURVEY DISK
 JU4395_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4395_STAMPING: G 196 1991
 JU4395_MARK LOGO: MDSHA
 JU4395_PROJECTION: RECESSED 10 CENTIMETERS
 JU4395_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4395_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4395+STABILITY: SURFACE MOTION
 JU4395_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU4395+SATELLITE: SATELLITE OBSERVATIONS - February 25, 2013
 JU4395
 JU4395  HISTORY     - Date     Condition        Report By
 JU4395  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4395  HISTORY     - 20020301 GOOD             USPSQD
 JU4395  HISTORY     - 20130225 GOOD             ARCSHE
 JU4395
 JU4395                          STATION DESCRIPTION
 JU4395
 JU4395'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4395'THE MARKER IS LOCATED ABOUT 2.5 MI (4.0 KM) EAST OF CRUMPTON, 3.5 MI
 JU4395'(5.6 KM) NORTH OF DUDLEY CORNERS, NEAR KIRBY LANDING AND ALONG THE
 JU4395'SOUTHEAST SIDE OF U.S. HIGHWAY 301.  IT IS ON ROAD RIGHT-OF-WAY.
 JU4395'
 JU4395'TO REACH FROM THE POST OFFICE IN CRUMPTON, GO SOUTH ON STATE HIGHWAY
 JU4395'290 FOR 3.25 MI (5.23 KM) TO U.S. HIGHWAY 301.  TURN LEFT AND GO
 JU4395'NORTHERLY ON U.S. HIGHWAY 301 FOR 2.9 MI (4.7 KM) TO THE MARKER ON THE
 JU4395'RIGHT NEAR THE SOUTH SIDE OF A POWERLINE RIGHT-OF-WAY CLEARING.
 JU4395'
 JU4395'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JU4395'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS
 JU4395'RECESSED ABOUT 0.15 FT (0.05 M) BELOW THE SURFACE OF THE GROUND.  IT
 JU4395'IS 72.0 FT (21.9 M) EAST OF THE CENTER OF THE NORTHBOUND LANE OF U.S.
 JU4395'HIGHWAY 301, 147.3 FT (44.9 M) SOUTHWEST OF A POWERLINE POLE WITH NO
 JU4395'NUMBER, 25 FT (7.6 M) NORTHEAST OF THE NORTHWEST CORNER OF A WOODED
 JU4395'AREA, 3 FT (0.9 M) NORTH OF THE EDGE OF A WOODS, 2.0 FT (0.6 M) NORTH
 JU4395'OF A CARSONITE WITNESS POST AND ABOUT 3 FT (0.9 M) LOWER THAN THE
 JU4395'ROAD.
 JU4395
 JU4395                          STATION RECOVERY (2002)
 JU4395
 JU4395'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4395'RECOVERED IN GOOD CONDITION.
 JU4395
 JU4395                          STATION RECOVERY (2013)
 JU4395
 JU4395'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU4395'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6918 ***********************************************************************
 JV6918  DESIGNATION -  G 197
 JV6918  PID         -  JV6918
 JV6918  STATE/COUNTY-  MD/BALTIMORE
 JV6918  COUNTRY     -  US
 JV6918  USGS QUAD   -  MIDDLE RIVER (2016)
 JV6918
 JV6918                         *CURRENT SURVEY CONTROL
 JV6918  ______________________________________________________________________
 JV6918* NAD 83(1986) POSITION- 39 21 12.     (N) 076 29 29.     (W)   SCALED
 JV6918* NAVD 88 ORTHO HEIGHT -    28.081 (meters)       92.13  (feet) ADJUSTED
 JV6918  ______________________________________________________________________
 JV6918  GEOID HEIGHT    -        -32.891 (meters)                     GEOID18
 JV6918  DYNAMIC HEIGHT  -         28.066 (meters)       92.08  (feet) COMP
 JV6918  MODELED GRAVITY -    980,100.7   (mgal)                       NAVD 88
 JV6918
 JV6918  VERT ORDER      -  SECOND    CLASS I
 JV6918
 JV6918.The horizontal coordinates were scaled from a map and have
 JV6918.an estimated accuracy of +/- 6 seconds.
 JV6918
 JV6918.The orthometric height was determined by differential leveling and
 JV6918.adjusted by the NATIONAL GEODETIC SURVEY
 JV6918.in June 1995.
 JV6918
 JV6918.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6918.GEOID18 height accuracy estimate available here.
 JV6918
 JV6918.Click photographs - Photos may exist for this station.
 JV6918
 JV6918.The dynamic height is computed by dividing the NAVD 88
 JV6918.geopotential number by the normal gravity value computed on the
 JV6918.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6918.degrees latitude (g = 980.6199 gals.).
 JV6918
 JV6918.The modeled gravity was interpolated from observed gravity values.
 JV6918
 JV6918;                    North         East    Units  Estimated Accuracy
 JV6918;SPC MD       -   187,350.      443,840.      MT  (+/- 180 meters Scaled)
 JV6918
 JV6918_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ714570(NAD 83)
 JV6918
 JV6918                          SUPERSEDED SURVEY CONTROL
 JV6918
 JV6918.No superseded survey control is available for this station.
 JV6918
 JV6918_MARKER: DD = SURVEY DISK
 JV6918_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6918_STAMPING: G 197 1991
 JV6918_MARK LOGO: MDSHA
 JV6918_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6918_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6918+STABILITY: SURFACE MOTION
 JV6918
 JV6918  HISTORY     - Date     Condition        Report By
 JV6918  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6918
 JV6918                          STATION DESCRIPTION
 JV6918
 JV6918'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6918'THE MARKER IS LOCATED ABOUT 8 MI (12.9 KM) NORTHEAST OF THE CENTER OF
 JV6918'BALTIMORE, 1 MI (1.6 KM) NORTH OF GOLDEN RING AND AT THE INTERSECTION
 JV6918'OF INTERSTATE HIGHWAY 95 AND 695 (BALTIMORE BELTWAY).  TO REACH FROM
 JV6918'THE INTERSTATE HIGHWAY 95 NORTHBOUND TOLL PLAZA WHICH IS LOCATED ON
 JV6918'THE NORTHEAST SIDE OF THE FORT MCHENRY TUNNEL, GO NORTHEAST ON
 JV6918'INTERSTATE HIGHWAY 95 FOR 8.0 MI (12.9 KM) TO THE MARKER ON THE
 JV6918'RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET IN THE
 JV6918'TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS ABOUT 0.2 FT
 JV6918'(0.1 M) BELOW THE SURFACE OF THE GROUND, 39.5 FT (12.0 M) SOUTHEAST
 JV6918'OF THE CENTER OF THE RAMP LEADING FROM THE WESTBOUND LANE OF
 JV6918'INTERSTATE HIGHWAY 695 ONTO THE NORTHBOUND LANE OF INTERSTATE HIGHWAY
 JV6918'95, 74 FT (22.6 M) SOUTHWEST OF A METAL LIGHTPOLE, 116 FT (35.4 M)
 JV6918'NORTHEAST OF OF THE CENTER OF SOUTH END OF A 4 FT (1.2 M) CONCRETE
 JV6918'PIPE, 12.5 FT (3.8 M) SOUTHEAST OF THE CENTER OF A CONCRETE DRAIN
 JV6918'GUTTER, 6 FT (1.8 M) NORTHWEST OF A CHAIN LINK FENCE, 5 FT (1.5 M)
 JV6918'NORTHWEST OF A CARSONITE WITNESS POST AND ABOUT 2 FT (0.6 M) LOWER
 JV6918'THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1589 ***********************************************************************
 JW1589  DESIGNATION -  G 198
 JW1589  PID         -  JW1589
 JW1589  STATE/COUNTY-  MD/GARRETT
 JW1589  COUNTRY     -  US
 JW1589  USGS QUAD   -  TABLE ROCK (2016)
 JW1589
 JW1589                         *CURRENT SURVEY CONTROL
 JW1589  ______________________________________________________________________
 JW1589* NAD 83(1986) POSITION- 39 20 25.     (N) 079 26 49.     (W)   SCALED
 JW1589* NAVD 88 ORTHO HEIGHT -   768.854 (meters)     2522.48  (feet) ADJUSTED
 JW1589  ______________________________________________________________________
 JW1589  GEOID HEIGHT    -        -31.069 (meters)                     GEOID18
 JW1589  DYNAMIC HEIGHT  -        768.321 (meters)     2520.73  (feet) COMP
 JW1589  MODELED GRAVITY -    979,907.3   (mgal)                       NAVD 88
 JW1589
 JW1589  VERT ORDER      -  SECOND    CLASS I
 JW1589
 JW1589.The horizontal coordinates were scaled from a map and have
 JW1589.an estimated accuracy of +/- 6 seconds.
 JW1589
 JW1589.The orthometric height was determined by differential leveling and
 JW1589.adjusted by the NATIONAL GEODETIC SURVEY
 JW1589.in April 1995.
 JW1589
 JW1589.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1589.GEOID18 height accuracy estimate available here.
 JW1589
 JW1589.Click photographs - Photos may exist for this station.
 JW1589
 JW1589.The dynamic height is computed by dividing the NAVD 88
 JW1589.geopotential number by the normal gravity value computed on the
 JW1589.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1589.degrees latitude (g = 980.6199 gals.).
 JW1589
 JW1589.The modeled gravity was interpolated from observed gravity values.
 JW1589
 JW1589;                    North         East    Units  Estimated Accuracy
 JW1589;SPC MD       -   188,610.      189,080.      MT  (+/- 180 meters Scaled)
 JW1589
 JW1589_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD338556(NAD 83)
 JW1589
 JW1589                          SUPERSEDED SURVEY CONTROL
 JW1589
 JW1589.No superseded survey control is available for this station.
 JW1589
 JW1589_STAMPING: G 198 1991
 JW1589_MARK LOGO: MDSHA
 JW1589
 JW1589  HISTORY     - Date     Condition        Report By
 JW1589  HISTORY     - 1991     MONUMENTED       MDSHA
 JW1589  HISTORY     - 19991217 MARK NOT FOUND   MDSHA
 JW1589  HISTORY     - 20160925 MARK NOT FOUND   GEOCAC
 JW1589
 JW1589                          STATION DESCRIPTION
 JW1589
 JW1589'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW1589'THE MARK IS LOCATED ABOUT 2.2 MI (3.5 KM) NORTH-NORTHEAST OF
 JW1589'REDHOUSE, 1.4 MI (2.3 KM) SOUTHWEST OF GORTNER AND ALONG U.S.
 JW1589'HIGHWAY 219.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARK FROM THE
 JW1589'POST OFFICE IN OAKLAND, GO SOUTHWEST ON SECOND STREET FOR 0.2 MI (0.3
 JW1589'KM) TO U.S. HIGHWAY 219.  TURN LEFT AND GO SOUTH ON U.S. HIGHWAY
 JW1589'219 FOR 5.8 MI (9.3 KM) TO SILVER KNOB ROAD AND THE MARK ON THE
 JW1589'RIGHT.  THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY
 JW1589'ADMINISTRATION SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND
 JW1589'CONCRETE MONUMENT WHICH IS 0.15 FT (0.05 M) BELOW THE SURFACE OF THE
 JW1589'GROUND.  IT IS 27 FT (8.2 M) NORTHEAST OF THE CENTER OF U.S. HIGHWAY
 JW1589'219, 44.5 FT (13.6 M) NORTHEAST OF POWER POLE NUMBERED C AND P 170
 JW1589'AND P AND E 0-506, 64 FT (19.5 M) NORTH OF THE NORTHEAST CORNER OF
 JW1589'SUNNYSIDE CHAPEL AND 1.8 FT (0.5 M) NORTH OF THE WITNESS POST.  IT IS
 JW1589'1.0 FT (0.3 M) BELOW THE SURFACE OF THE ROAD.
 JW1589
 JW1589                          STATION RECOVERY (1999)
 JW1589
 JW1589'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JW1589'THE MARK WAS SEARCHED FOR AND NOT RECOVERED.  IT APPEARS THE MARK WAS
 JW1589'DESTROYED BY THE CONSTRUCTION OF A GRAVEL TURN LANE AT THE DESCRIBED
 JW1589'LOCATION.
 JW1589
 JW1589                          STATION RECOVERY (2016)
 JW1589
 JW1589'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW1589'THE MARK WAS SEARCHED FOR AND NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2600 ***********************************************************************
 DJ2600  DESIGNATION -  G 198 RESET
 DJ2600  PID         -  DJ2600
 DJ2600  STATE/COUNTY-  MD/GARRETT
 DJ2600  COUNTRY     -  US
 DJ2600  USGS QUAD   -  TABLE ROCK (2016)
 DJ2600
 DJ2600                         *CURRENT SURVEY CONTROL
 DJ2600  ______________________________________________________________________
 DJ2600* NAD 83(1986) POSITION- 39 20 26.6    (N) 079 26 48.5    (W)   HD_HELD2
 DJ2600* NAVD 88 ORTHO HEIGHT -   765.331 (meters)     2510.92  (feet) ADJUSTED
 DJ2600  ______________________________________________________________________
 DJ2600  GEOID HEIGHT    -        -31.070 (meters)                     GEOID18
 DJ2600  DYNAMIC HEIGHT  -        764.800 (meters)     2509.18  (feet) COMP
 DJ2600  MODELED GRAVITY -    979,907.2   (mgal)                       NAVD 88
 DJ2600
 DJ2600  VERT ORDER      -  SECOND    CLASS I
 DJ2600
 DJ2600.The horizontal coordinates were established by autonomous hand held GPS
 DJ2600.observations and have an estimated accuracy of +/- 10 meters.
 DJ2600
 DJ2600.The orthometric height was determined by differential leveling and
 DJ2600.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2600.in October 2007.
 DJ2600
 DJ2600.No vertical observational check was made to the station.
 DJ2600
 DJ2600.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2600.GEOID18 height accuracy estimate available here.
 DJ2600
 DJ2600.Click photographs - Photos may exist for this station.
 DJ2600
 DJ2600.The dynamic height is computed by dividing the NAVD 88
 DJ2600.geopotential number by the normal gravity value computed on the
 DJ2600.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2600.degrees latitude (g = 980.6199 gals.).
 DJ2600
 DJ2600.The modeled gravity was interpolated from observed gravity values.
 DJ2600
 DJ2600;                    North         East    Units  Estimated Accuracy
 DJ2600;SPC MD       -   188,658.      189,091.      MT  (+/- 10 meters HH2 GPS)
 DJ2600
 DJ2600_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3384955738(NAD 83)
 DJ2600
 DJ2600                          SUPERSEDED SURVEY CONTROL
 DJ2600
 DJ2600.No superseded survey control is available for this station.
 DJ2600
 DJ2600_MARKER: DD = SURVEY DISK
 DJ2600_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ2600_STAMPING: G 198 RESET 1999
 DJ2600_MARK LOGO: MDSHA
 DJ2600_PROJECTION: FLUSH
 DJ2600_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DJ2600_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ2600+STABILITY: SURFACE MOTION
 DJ2600_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ2600+SATELLITE: SATELLITE OBSERVATIONS - September 25, 2016
 DJ2600
 DJ2600  HISTORY     - Date     Condition        Report By
 DJ2600  HISTORY     - 1999     MONUMENTED       MDSHA
 DJ2600  HISTORY     - 20040929 GOOD             MDSHA
 DJ2600  HISTORY     - 20160925 GOOD             GEOCAC
 DJ2600
 DJ2600                          STATION DESCRIPTION
 DJ2600
 DJ2600'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004
 DJ2600'THE MARK IS LOCATED ABOUT 5.1 MI (8.3 KM) SOUTH-SOUTHWEST OF OAKLAND,
 DJ2600'2.2 MILES (3.5 KM) NORTH 0F RED HOUSE, 1.4 MILES (2.3 KM) SOUTHWEST OF
 DJ2600'GORTNER AND ALONG U.S.HIGHWAY 219.
 DJ2600'
 DJ2600'TO REACH THE MARK FROM THE POST OFFICE IN OAKLAND, GO SOUTH ALONG
 DJ2600'SECOND STREET FOR 0.2 MILES (0.3 KM) TO U.S.HIGHWAY 219.  TURN LEFT
 DJ2600'AND PROCEED SOUTH ALONG U.S.HIGHWAY 219 FOR 5.8 MILES (9.3 KM) TO
 DJ2600'SILVER KNOB ROAD AND THE STATION ON THE RIGHT.
 DJ2600'
 DJ2600'IT IS 45.4 FEET (13.8 M) NORTHWEST OF THE CENTER LINE OF THE HIGHWAY,
 DJ2600'187.0 FEET (57.0 M) EAST OF THE CENTER OF SILVER KNOB ROAD, 103.0 FEET
 DJ2600'(31.4 M) WEST AND ACROSS THE HIGHWAY FROM POWER POLE NUMBER 1224, 2.2
 DJ2600'FEET (0.7 M) SOUTHEAST OF TELEPHONE POLE NUMBER 169, 1.2 FEET (0.4 M)
 DJ2600'SOUTHEAST OF A CARSONITE WITNESS POST, SET IN THE TOP OF A 12 INCH (30
 DJ2600'CM) ROUND CONCRETE MONUMENT LEVEL WITH THE HIGHWAY.
 DJ2600
 DJ2600                          STATION RECOVERY (2016)
 DJ2600
 DJ2600'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 DJ2600'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2786 ***********************************************************************
 HU2786  DESIGNATION -  G 199
 HU2786  PID         -  HU2786
 HU2786  STATE/COUNTY-  MD/WORCESTER
 HU2786  COUNTRY     -  US
 HU2786  USGS QUAD   -  BERLIN (2016)
 HU2786
 HU2786                         *CURRENT SURVEY CONTROL
 HU2786  ______________________________________________________________________
 HU2786* NAD 83(1986) POSITION- 38 21 28.8    (N) 075 10 08.5    (W)   HD_HELD2
 HU2786* NAVD 88 ORTHO HEIGHT -     3.654 (meters)       11.99  (feet) ADJUSTED
 HU2786  ______________________________________________________________________
 HU2786  GEOID HEIGHT    -        -35.999 (meters)                     GEOID18
 HU2786  DYNAMIC HEIGHT  -          3.652 (meters)       11.98  (feet) COMP
 HU2786  MODELED GRAVITY -    980,010.0   (mgal)                       NAVD 88
 HU2786
 HU2786  VERT ORDER      -  SECOND    CLASS I
 HU2786
 HU2786.The horizontal coordinates were established by autonomous hand held GPS
 HU2786.observations and have an estimated accuracy of +/- 10 meters.
 HU2786
 HU2786.The orthometric height was determined by differential leveling and
 HU2786.adjusted by the NATIONAL GEODETIC SURVEY
 HU2786.in November 1994.
 HU2786
 HU2786.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2786.GEOID18 height accuracy estimate available here.
 HU2786
 HU2786.Click photographs - Photos may exist for this station.
 HU2786
 HU2786.The dynamic height is computed by dividing the NAVD 88
 HU2786.geopotential number by the normal gravity value computed on the
 HU2786.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2786.degrees latitude (g = 980.6199 gals.).
 HU2786
 HU2786.The modeled gravity was interpolated from observed gravity values.
 HU2786
 HU2786;                    North         East    Units  Estimated Accuracy
 HU2786;SPC MD       -    78,346.      560,022.      MT  (+/- 10 meters HH2 GPS)
 HU2786
 HU2786_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8523245550(NAD 83)
 HU2786
 HU2786                          SUPERSEDED SURVEY CONTROL
 HU2786
 HU2786  NGVD 29 (02/25/92)    3.898  (m)           12.79   (f) ADJUSTED    2 1
 HU2786
 HU2786.Superseded values are not recommended for survey control.
 HU2786
 HU2786.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2786.See file dsdata.pdf to determine how the superseded data were derived.
 HU2786
 HU2786_MARKER: DV = VERTICAL CONTROL DISK
 HU2786_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HU2786_SP_SET: BRIDGE
 HU2786_STAMPING: G 199 1991
 HU2786_MARK LOGO: NGS
 HU2786_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2786_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2786+STABILITY: SURFACE MOTION
 HU2786_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2786+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2013
 HU2786
 HU2786  HISTORY     - Date     Condition        Report By
 HU2786  HISTORY     - 1991     MONUMENTED       MDSHA
 HU2786  HISTORY     - 20021119 GOOD             USPSQD
 HU2786  HISTORY     - 20031229 GOOD             USPSQD
 HU2786  HISTORY     - 20051220 GOOD             USPSQD
 HU2786  HISTORY     - 20070716 GOOD             MDSHA
 HU2786  HISTORY     - 20130227 GOOD             ARCSHE
 HU2786
 HU2786                          STATION DESCRIPTION
 HU2786
 HU2786'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2786'THE MARK IS LOCATED ABOUT 5.13 MI (8.26 KM) WEST OF OCEAN CITY, 3.56
 HU2786'MI (5.73 KM) NORTHEAST OF BERLIN AND ON ROAD RIGHT-OF-WAY.  TO REACH
 HU2786'FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN, GO
 HU2786'EAST ON U.S. HIGHWAY 50 FOR 2.55 MI (4.10 KM) TO A ROAD LEFT.  TURN
 HU2786'LEFT AND GO NORTH ON STATE ROUTE 589 FOR 0.77 MI (1.24 KM) TO THE
 HU2786'BRIDGE OVER TAYLORVILLE CREEK AND THE MARK ON THE LEFT.  IT IS 52.5
 HU2786'FT (16.0 M) NORTH-NORTHEAST OF TELEPHONE POLE NUMBERED 11, 18.5 FT
 HU2786'(5.6 M) WEST OF THE CENTER LINE OF STATE ROUTE 589, 6.7 FT (2.0 M)
 HU2786'SOUTH OF THE CENTER LINE OF THE BRIDGE, 2.2 FT (0.7 M) NORTH OF A
 HU2786'CARSONITE WITNESS POST AND SET IN A DRILL HOLE IN THE WEST ENDWALL OF
 HU2786'THE BRIDGE.
 HU2786
 HU2786                          STATION RECOVERY (2002)
 HU2786
 HU2786'RECOVERY NOTE BY US POWER SQUADRON 2002 (CR)
 HU2786'RECOVERED IN GOOD CONDITION.
 HU2786
 HU2786                          STATION RECOVERY (2003)
 HU2786
 HU2786'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU2786'RECOVERED IN GOOD CONDITION.
 HU2786
 HU2786                          STATION RECOVERY (2005)
 HU2786
 HU2786'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU2786'RECOVERED IN GOOD CONDITION.
 HU2786
 HU2786                          STATION RECOVERY (2007)
 HU2786
 HU2786'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 HU2786'RECOVERED IN GOOD CONDITION
 HU2786
 HU2786                          STATION RECOVERY (2013)
 HU2786
 HU2786'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU2786'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0043 ***********************************************************************
 JV0043  DESIGNATION -  G 20
 JV0043  PID         -  JV0043
 JV0043  STATE/COUNTY-  MD/CECIL
 JV0043  COUNTRY     -  US
 JV0043  USGS QUAD   -  CONOWINGO DAM (2016)
 JV0043
 JV0043                         *CURRENT SURVEY CONTROL
 JV0043  ______________________________________________________________________
 JV0043* NAD 83(1986) POSITION- 39 40 30.     (N) 076 11 12.     (W)   SCALED
 JV0043* NAVD 88 ORTHO HEIGHT -    36.408 (meters)      119.45  (feet) ADJUSTED
 JV0043  ______________________________________________________________________
 JV0043  GEOID HEIGHT    -        -32.891 (meters)                     GEOID18
 JV0043  DYNAMIC HEIGHT  -         36.390 (meters)      119.39  (feet) COMP
 JV0043  MODELED GRAVITY -    980,146.8   (mgal)                       NAVD 88
 JV0043
 JV0043  VERT ORDER      -  FIRST     CLASS II
 JV0043
 JV0043.The horizontal coordinates were scaled from a map and have
 JV0043.an estimated accuracy of +/- 6 seconds.
 JV0043
 JV0043.The orthometric height was determined by differential leveling and
 JV0043.adjusted by the NATIONAL GEODETIC SURVEY
 JV0043.in June 1991.
 JV0043
 JV0043.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0043.GEOID18 height accuracy estimate available here.
 JV0043
 JV0043.Click photographs - Photos may exist for this station.
 JV0043
 JV0043.The dynamic height is computed by dividing the NAVD 88
 JV0043.geopotential number by the normal gravity value computed on the
 JV0043.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0043.degrees latitude (g = 980.6199 gals.).
 JV0043
 JV0043.The modeled gravity was interpolated from observed gravity values.
 JV0043
 JV0043;                    North         East    Units  Estimated Accuracy
 JV0043;SPC MD       -   223,260.      469,780.      MT  (+/- 180 meters Scaled)
 JV0043
 JV0043_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ982923(NAD 83)
 JV0043
 JV0043                          SUPERSEDED SURVEY CONTROL
 JV0043
 JV0043  NGVD 29 (11/26/84)   36.661  (m)          120.28   (f) ADJUSTED    1 2
 JV0043
 JV0043.Superseded values are not recommended for survey control.
 JV0043
 JV0043.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0043.See file dsdata.pdf to determine how the superseded data were derived.
 JV0043
 JV0043_MARKER: DB = BENCH MARK DISK
 JV0043_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0043_SP_SET: CULVERT
 JV0043_STAMPING: G 20 1955
 JV0043_MARK LOGO: CGS
 JV0043_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0043
 JV0043  HISTORY     - Date     Condition        Report By
 JV0043  HISTORY     - 1955     MONUMENTED       CGS
 JV0043  HISTORY     - 1979     GOOD             NGS
 JV0043  HISTORY     - 19960420 GOOD             USPSQD
 JV0043
 JV0043                          STATION DESCRIPTION
 JV0043
 JV0043'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0043'1 MI NW FROM CONOWINGO DAM.
 JV0043'ABOUT 0.95 MILE NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV0043'STATION AT CONOWINGO DAM, ABOUT 102 YARDS SOUTHEAST OF MILE
 JV0043'POST 11, ABOUT 1.05 MILES NORTHEAST OF OVERPASS OF U.S. HIGHWAY
 JV0043'1 OVER TRACK, IN THE TOP OF SOUTHEAST END OF THE NORTHEAST CONCRETE
 JV0043'HEAD WALL OF A 24-INCH PIPE CULVERT, 8 1/2 FEET NORTHEAST OF
 JV0043'NORTHEAST RAIL AND ABOUT 1 1/2 FEET BELOW LEVEL OF TRACK.
 JV0043
 JV0043                          STATION RECOVERY (1979)
 JV0043
 JV0043'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0043'RECOVERED IN GOOD CONDITION.
 JV0043
 JV0043                          STATION RECOVERY (1996)
 JV0043
 JV0043'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0043'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0881 ***********************************************************************
 JV0881  DESIGNATION -  G 25
 JV0881  PID         -  JV0881
 JV0881  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0881  COUNTRY     -  US
 JV0881  USGS QUAD   -  BELTSVILLE (2016)
 JV0881
 JV0881                         *CURRENT SURVEY CONTROL
 JV0881  ______________________________________________________________________
 JV0881* NAD 83(1986) POSITION- 39 05 38.     (N) 076 53 31.     (W)   SCALED
 JV0881* NAVD 88 ORTHO HEIGHT -   104.069 (meters)      341.43  (feet) ADJUSTED
 JV0881  ______________________________________________________________________
 JV0881  GEOID HEIGHT    -        -32.154 (meters)                     GEOID18
 JV0881  DYNAMIC HEIGHT  -        104.013 (meters)      341.25  (feet) COMP
 JV0881  MODELED GRAVITY -    980,092.5   (mgal)                       NAVD 88
 JV0881
 JV0881  VERT ORDER      -  SECOND    CLASS 0
 JV0881
 JV0881.The horizontal coordinates were scaled from a map and have
 JV0881.an estimated accuracy of +/- 6 seconds.
 JV0881
 JV0881.The orthometric height was determined by differential leveling and
 JV0881.adjusted by the NATIONAL GEODETIC SURVEY
 JV0881.in June 1991.
 JV0881
 JV0881.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0881.GEOID18 height accuracy estimate available here.
 JV0881
 JV0881.Click photographs - Photos may exist for this station.
 JV0881
 JV0881.The dynamic height is computed by dividing the NAVD 88
 JV0881.geopotential number by the normal gravity value computed on the
 JV0881.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0881.degrees latitude (g = 980.6199 gals.).
 JV0881
 JV0881.The modeled gravity was interpolated from observed gravity values.
 JV0881
 JV0881;                    North         East    Units  Estimated Accuracy
 JV0881;SPC MD       -   158,430.      409,350.      MT  (+/- 180 meters Scaled)
 JV0881
 JV0881_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ363288(NAD 83)
 JV0881
 JV0881                          SUPERSEDED SURVEY CONTROL
 JV0881
 JV0881  NGVD 29 (11/26/84)  104.281  (m)          342.13   (f) ADJUSTED    2 0
 JV0881
 JV0881.Superseded values are not recommended for survey control.
 JV0881
 JV0881.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0881.See file dsdata.pdf to determine how the superseded data were derived.
 JV0881
 JV0881_MARKER: DB = BENCH MARK DISK
 JV0881_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0881_STAMPING: G 25 1957
 JV0881_MARK LOGO: CGS
 JV0881_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0881+STABILITY: SURFACE MOTION
 JV0881
 JV0881  HISTORY     - Date     Condition        Report By
 JV0881  HISTORY     - 1957     MONUMENTED       CGS
 JV0881
 JV0881                          STATION DESCRIPTION
 JV0881
 JV0881'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0881'2.5 MI WSW FROM LAUREL.
 JV0881'FROM THE JUNCTION OF STATE HIGHWAY 198 AND OLD GUNPOWDER ROAD, GO
 JV0881'EAST ON HIGHWAY 198, 0.9 MILE TO GRAVELED ROAD RIGHT, TURN RIGHT
 JV0881'0.5 MILE TO LARGE WHITE HOUSE.  MARK IS AT THE NORTH END OF A ROW
 JV0881'OF LILAC BUSHES, 100 FEET NORTHWEST OF NORTHWEST CORNER OF HOUSE,
 JV0881'20 FEET SOUTHWEST OF A 12 INCH PEAR TREE AND 3 1/2 FEET NORTHWEST
 JV0881'OF A WITNESS POST.  DISK IS SET IN CONCRETE POST AND PROJECTS
 JV0881'ABOUT 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0930 ***********************************************************************
 JV0930  DESIGNATION -  G 26
 JV0930  PID         -  JV0930
 JV0930  STATE/COUNTY-  MD/BALTIMORE
 JV0930  COUNTRY     -  US
 JV0930  USGS QUAD   -  RELAY (2016)
 JV0930
 JV0930                         *CURRENT SURVEY CONTROL
 JV0930  ______________________________________________________________________
 JV0930* NAD 83(1986) POSITION- 39 13 53.6    (N) 076 38 30.1    (W)   HD_HELD2
 JV0930* NAVD 88 ORTHO HEIGHT -     6.509 (meters)       21.35  (feet) ADJUSTED
 JV0930  ______________________________________________________________________
 JV0930  GEOID HEIGHT    -        -32.727 (meters)                     GEOID18
 JV0930  DYNAMIC HEIGHT  -          6.506 (meters)       21.35  (feet) COMP
 JV0930  MODELED GRAVITY -    980,098.9   (mgal)                       NAVD 88
 JV0930
 JV0930  VERT ORDER      -  FIRST     CLASS I
 JV0930
 JV0930.The horizontal coordinates were established by autonomous hand held GPS
 JV0930.observations and have an estimated accuracy of +/- 10 meters.
 JV0930
 JV0930.The orthometric height was determined by differential leveling and
 JV0930.adjusted by the NATIONAL GEODETIC SURVEY
 JV0930.in February 1998.
 JV0930
 JV0930.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0930.GEOID18 height accuracy estimate available here.
 JV0930
 JV0930.Click photographs - Photos may exist for this station.
 JV0930
 JV0930.The dynamic height is computed by dividing the NAVD 88
 JV0930.geopotential number by the normal gravity value computed on the
 JV0930.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0930.degrees latitude (g = 980.6199 gals.).
 JV0930
 JV0930.The modeled gravity was interpolated from observed gravity values.
 JV0930
 JV0930;                    North         East    Units  Estimated Accuracy
 JV0930;SPC MD       -   173,773.      430,936.      MT  (+/- 10 meters HH2 GPS)
 JV0930
 JV0930_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5830343757(NAD 83)
 JV0930
 JV0930                          SUPERSEDED SURVEY CONTROL
 JV0930
 JV0930  NAVD 88 (06/15/91)    6.528  (m)           21.42   (f) SUPERSEDED  1 1
 JV0930  NGVD 29 (11/26/84)    6.769  (m)           22.21   (f) ADJUSTED    1 1
 JV0930
 JV0930.Superseded values are not recommended for survey control.
 JV0930
 JV0930.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0930.See file dsdata.pdf to determine how the superseded data were derived.
 JV0930
 JV0930_MARKER: DB = BENCH MARK DISK
 JV0930_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0930_SP_SET: CULVERT HEADWALL
 JV0930_STAMPING: G 26 1957
 JV0930_MARK LOGO: CGS
 JV0930_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0930+STABILITY: SURFACE MOTION
 JV0930_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0930+SATELLITE: SATELLITE OBSERVATIONS - October 05, 2022
 JV0930
 JV0930  HISTORY     - Date     Condition        Report By
 JV0930  HISTORY     - 1957     MONUMENTED       CGS
 JV0930  HISTORY     - 1960     GOOD             CGS
 JV0930  HISTORY     - 1971     GOOD             NGS
 JV0930  HISTORY     - 19960201 GOOD             MCCRON
 JV0930  HISTORY     - 20091001 GOOD             MD-005
 JV0930  HISTORY     - 20221005 GOOD             WTBALL
 JV0930
 JV0930                          STATION DESCRIPTION
 JV0930
 JV0930'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0930'3.4 MI W FROM BROOKLYN.
 JV0930'3.4 MILES WEST ALONG HARBOR TUNNEL THRUWAY FROM TOLL GATE AT
 JV0930'BROOKLYN, ABOUT 85 PACES NORTH OF THRUWAY, IN THE TOP OF EAST
 JV0930'HEADWALL OF A 15-FOOT CONCRETE BOX CULVERT UNDER ANNAPOLIS ROAD,
 JV0930'24 FEET EAST OF CENTER LINE OF ANNAPOLIS ROAD, 2.8 FEET NORTH OF
 JV0930'SOUTH END OF HEAD WALL AND ABOUT LEVEL WITH ROAD.
 JV0930
 JV0930                          STATION RECOVERY (1971)
 JV0930
 JV0930'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0930'RECOVERED IN GOOD CONDITION.
 JV0930
 JV0930                          STATION RECOVERY (1996)
 JV0930
 JV0930'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 JV0930'RECOVERED AS DESCRIBED.
 JV0930
 JV0930                          STATION RECOVERY (2009)
 JV0930
 JV0930'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (PAS)
 JV0930'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (PAS).
 JV0930'THE STATION IS LOCATED ON THE EAST SIDE OF ANNAPOLIS ROAD LESS THAN
 JV0930'100 FEET SOUTH OF THE INTERSECTION WITH YARNALL ROAD. IT IS IN THE TOP
 JV0930'OF THE EAST HEADWALL OF A BOX CULVERT, 46.8 FEET SOUTH OF AN UTILITY
 JV0930'POLE AND 38.8 FEET SOUTHWEST OF A SANITARY SEWER MANHOLE. IT IS
 JV0930'PARTIALLY COVERED BY THE BASE OF A GUARD RAIL.
 JV0930
 JV0930                          STATION RECOVERY (2022)
 JV0930
 JV0930'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2022 (NAW)
 JV0930'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3590 ***********************************************************************
 JV3590  DESIGNATION -  G 27
 JV3590  PID         -  JV3590
 JV3590  STATE/COUNTY-  MD/FREDERICK
 JV3590  COUNTRY     -  US
 JV3590  USGS QUAD   -  MYERSVILLE (2016)
 JV3590
 JV3590                         *CURRENT SURVEY CONTROL
 JV3590  ______________________________________________________________________
 JV3590* NAD 83(1986) POSITION- 39 30 15.     (N) 077 33 03.     (W)   SCALED
 JV3590* NAVD 88 ORTHO HEIGHT -   178.516 (meters)      585.68  (feet) ADJUSTED
 JV3590  ______________________________________________________________________
 JV3590  GEOID HEIGHT    -        -33.178 (meters)                     GEOID18
 JV3590  DYNAMIC HEIGHT  -        178.417 (meters)      585.36  (feet) COMP
 JV3590  MODELED GRAVITY -    980,065.2   (mgal)                       NAVD 88
 JV3590
 JV3590  VERT ORDER      -  SECOND    CLASS I
 JV3590
 JV3590.The horizontal coordinates were scaled from a map and have
 JV3590.an estimated accuracy of +/- 6 seconds.
 JV3590
 JV3590.The orthometric height was determined by differential leveling and
 JV3590.adjusted by the NATIONAL GEODETIC SURVEY
 JV3590.in November 2003.
 JV3590
 JV3590.No vertical observational check was made to the station.
 JV3590
 JV3590.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3590.GEOID18 height accuracy estimate available here.
 JV3590
 JV3590.Click photographs - Photos may exist for this station.
 JV3590
 JV3590.The dynamic height is computed by dividing the NAVD 88
 JV3590.geopotential number by the normal gravity value computed on the
 JV3590.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3590.degrees latitude (g = 980.6199 gals.).
 JV3590
 JV3590.The modeled gravity was interpolated from observed gravity values.
 JV3590
 JV3590;                    North         East    Units  Estimated Accuracy
 JV3590;SPC MD       -   204,120.      352,620.      MT  (+/- 180 meters Scaled)
 JV3590
 JV3590_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ806758(NAD 83)
 JV3590
 JV3590                          SUPERSEDED SURVEY CONTROL
 JV3590
 JV3590  NAVD 88 (06/15/91)  178.534  (m)          585.74   (f) SUPERSEDED  2 0
 JV3590  NGVD 29 (11/26/84)  178.745  (m)          586.43   (f) ADJUSTED    2 0
 JV3590
 JV3590.Superseded values are not recommended for survey control.
 JV3590
 JV3590.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3590.See file dsdata.pdf to determine how the superseded data were derived.
 JV3590
 JV3590_MARKER: DB = BENCH MARK DISK
 JV3590_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV3590_SP_SET: HEADWALL
 JV3590_STAMPING: G 27 1958
 JV3590_MARK LOGO: CGS
 JV3590_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3590_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3590+STABILITY: SURFACE MOTION
 JV3590
 JV3590  HISTORY     - Date     Condition        Report By
 JV3590  HISTORY     - 1958     MONUMENTED       CGS
 JV3590  HISTORY     - 1987     GOOD             USPSQD
 JV3590  HISTORY     - 20011121 GOOD             MDSHA
 JV3590
 JV3590                          STATION DESCRIPTION
 JV3590
 JV3590'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3590'1 MI SE FROM MYERSVILLE.
 JV3590'0.5 MILE NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV3590'AT MYERSVILLE, THENCE 0.5 MILE SOUTHEAST ALONG U.S. HIGHWAY 40,
 JV3590'AT A DRIVEWAY LEADING NORTHEAST INTO A FIELD, 460 FEET NORTHWEST
 JV3590'OF A HIGHWAY DEPARTMENT CINDER LOADING CHUTE, 20.4 FEET WEST OF A
 JV3590'STEEL GATE, IN THE NORTHWEST CONCRETE HEAD WALL, AND ABOUT 2 FEET
 JV3590'HIGHER THAN THE HIGHWAY.
 JV3590
 JV3590                          STATION RECOVERY (1987)
 JV3590
 JV3590'RECOVERY NOTE BY US POWER SQUADRON 1987 (WPG)
 JV3590'RECOVERED IN GOOD CONDITION.
 JV3590
 JV3590                          STATION RECOVERY (2001)
 JV3590
 JV3590'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3590'RECOVERED AS GOOD CONDITION. STATE HIGHWAY 153 IS NOW STATE HIGHWAY
 JV3590'17.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2722 ***********************************************************************
 JV2722  DESIGNATION -  G 28 RESET 1963 MDSRC
 JV2722  PID         -  JV2722
 JV2722  STATE/COUNTY-  MD/MONTGOMERY
 JV2722  COUNTRY     -  US
 JV2722  USGS QUAD   -  KENSINGTON (2016)
 JV2722
 JV2722                         *CURRENT SURVEY CONTROL
 JV2722  ______________________________________________________________________
 JV2722* NAD 83(1986) POSITION- 39 00 45.     (N) 077 03 50.     (W)   SCALED
 JV2722* NAVD 88 ORTHO HEIGHT -    60.77  (meters)      199.4   (feet) RESET
 JV2722  ______________________________________________________________________
 JV2722  GEOID HEIGHT    -        -31.905 (meters)                     GEOID18
 JV2722  VERT ORDER      -  THIRD
 JV2722
 JV2722.The horizontal coordinates were scaled from a map and have
 JV2722.an estimated accuracy of +/- 6 seconds.
 JV2722
 JV2722.The orthometric height was computed from unverified reset data.
 JV2722
 JV2722.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2722.GEOID18 height accuracy estimate available here.
 JV2722
 JV2722.Click photographs - Photos may exist for this station.
 JV2722
 JV2722;                    North         East    Units  Estimated Accuracy
 JV2722;SPC MD       -   149,400.      394,470.      MT  (+/- 180 meters Scaled)
 JV2722
 JV2722_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ213201(NAD 83)
 JV2722
 JV2722                          SUPERSEDED SURVEY CONTROL
 JV2722
 JV2722  NGVD 29 (??/??/??)   60.99   (m)          200.1    (f) RESET       3  
 JV2722
 JV2722.Superseded values are not recommended for survey control.
 JV2722
 JV2722.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2722.See file dsdata.pdf to determine how the superseded data were derived.
 JV2722
 JV2722_MARKER: DB = BENCH MARK DISK
 JV2722_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2722_STAMPING: G 28 RESET 1963
 JV2722_MARK LOGO: MDSRC
 JV2722_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2722+STABILITY: SURFACE MOTION
 JV2722
 JV2722  HISTORY     - Date     Condition        Report By
 JV2722  HISTORY     - 1963     MONUMENTED       MDSRC
 JV2722
 JV2722                          STATION DESCRIPTION
 JV2722
 JV2722'DESCRIBED BY MD STATE ROADS COMM 1963
 JV2722'AT ROCK CREEK PARK.
 JV2722'AT ROCK CREEK PARK, IN THE NORTHWEST CORNER OF BEACH DRIVE AND
 JV2722'STONYBROOK ROAD, 133.5 FEET WEST OF THE CENTERLINE OF STONYBROOK
 JV2722'ROAD, 113.5 FEET NORTH OF THE CENTERLINE OF BEACH DRIVE, 47.0
 JV2722'FEET NORTH OF A 16 INCH CEDAR TREE, 16.6 FEET NORTHWEST OF A 30
 JV2722'INCH MAPLE TREE AND 12.6 FET EAST-NORTHEAST OF A 24 INCH MAPLE
 JV2722'TREE, AND SET IN A CONCRETE POST PROJECTING 6 INCHES ABOVE THE
 JV2722'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0439 ***********************************************************************
 JV0439  DESIGNATION -  G 29
 JV0439  PID         -  JV0439
 JV0439  STATE/COUNTY-  MD/BALTIMORE
 JV0439  COUNTRY     -  US
 JV0439  USGS QUAD   -  MIDDLE RIVER (2016)
 JV0439
 JV0439                         *CURRENT SURVEY CONTROL
 JV0439  ______________________________________________________________________
 JV0439* NAD 83(1986) POSITION- 39 21 34.     (N) 076 26 31.     (W)   SCALED
 JV0439* NAVD 88 ORTHO HEIGHT -    25.584 (meters)       83.94  (feet) ADJUSTED
 JV0439  ______________________________________________________________________
 JV0439  GEOID HEIGHT    -        -32.968 (meters)                     GEOID18
 JV0439  DYNAMIC HEIGHT  -         25.570 (meters)       83.89  (feet) COMP
 JV0439  MODELED GRAVITY -    980,105.6   (mgal)                       NAVD 88
 JV0439
 JV0439  VERT ORDER      -  FIRST     CLASS II
 JV0439
 JV0439.The horizontal coordinates were scaled from a map and have
 JV0439.an estimated accuracy of +/- 6 seconds.
 JV0439
 JV0439.The orthometric height was determined by differential leveling and
 JV0439.adjusted by the NATIONAL GEODETIC SURVEY
 JV0439.in June 1991.
 JV0439
 JV0439.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0439.GEOID18 height accuracy estimate available here.
 JV0439
 JV0439.Click photographs - Photos may exist for this station.
 JV0439
 JV0439.The dynamic height is computed by dividing the NAVD 88
 JV0439.geopotential number by the normal gravity value computed on the
 JV0439.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0439.degrees latitude (g = 980.6199 gals.).
 JV0439
 JV0439.The modeled gravity was interpolated from observed gravity values.
 JV0439
 JV0439;                    North         East    Units  Estimated Accuracy
 JV0439;SPC MD       -   188,060.      448,100.      MT  (+/- 180 meters Scaled)
 JV0439
 JV0439_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ757576(NAD 83)
 JV0439
 JV0439                          SUPERSEDED SURVEY CONTROL
 JV0439
 JV0439  NGVD 29 (11/26/84)   25.828  (m)           84.74   (f) ADJUSTED    1 2
 JV0439
 JV0439.Superseded values are not recommended for survey control.
 JV0439
 JV0439.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0439.See file dsdata.pdf to determine how the superseded data were derived.
 JV0439
 JV0439_MARKER: DB = BENCH MARK DISK
 JV0439_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0439_STAMPING: G 29 1958
 JV0439_MARK LOGO: CGS
 JV0439_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0439+STABILITY: SURFACE MOTION
 JV0439
 JV0439  HISTORY     - Date     Condition        Report By
 JV0439  HISTORY     - 1958     MONUMENTED       CGS
 JV0439  HISTORY     - 1959     GOOD             CGS
 JV0439  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0439
 JV0439                          STATION DESCRIPTION
 JV0439
 JV0439'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0439'4.1 MI NE FROM GOLDEN RING.
 JV0439'ABOUT 3.7 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE
 JV0439'GOLDEN RING JUNION HIGH SCHOOL AT GOLDEN RING, THENCE 0.4
 JV0439'MILE NORTHWEST ALONG A FARM DRIVE LEADING TO NOTTINGHAM FARMS,
 JV0439'ABOUT 0.1 MILE NORTHWEST OF A WHITE FRAME HOUSE, 20 FEET
 JV0439'NORTHEAST OF THE CENTER LINE OF FARM DRIVE, 1 FOOT SOUTHWEST
 JV0439'OF A METAL WITNESS POST, SET IN THE TOP OF A CONCRETE POST
 JV0439'PROJECTING 4 INCHES ABOVE THE LEVEL OF THE GROUND.
 JV0439
 JV0439                          STATION RECOVERY (1971)
 JV0439
 JV0439'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0439'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1262 ***********************************************************************
 HV1262  DESIGNATION -  G 3
 HV1262  PID         -  HV1262
 HV1262  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1262  COUNTRY     -  US
 HV1262  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1262
 HV1262                         *CURRENT SURVEY CONTROL
 HV1262  ______________________________________________________________________
 HV1262* NAD 83(1986) POSITION- 38 57 04.     (N) 076 56 27.     (W)   SCALED
 HV1262* NAVD 88 ORTHO HEIGHT -    15.012 (meters)       49.25  (feet) ADJUSTED
 HV1262  ______________________________________________________________________
 HV1262  GEOID HEIGHT    -        -32.165 (meters)                     GEOID18
 HV1262  DYNAMIC HEIGHT  -         15.005 (meters)       49.23  (feet) COMP
 HV1262  MODELED GRAVITY -    980,103.5   (mgal)                       NAVD 88
 HV1262
 HV1262  VERT ORDER      -  FIRST     CLASS I
 HV1262
 HV1262.The horizontal coordinates were scaled from a map and have
 HV1262.an estimated accuracy of +/- 6 seconds.
 HV1262
 HV1262.The orthometric height was determined by differential leveling and
 HV1262.adjusted by the NATIONAL GEODETIC SURVEY
 HV1262.in June 1991.
 HV1262
 HV1262.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1262.GEOID18 height accuracy estimate available here.
 HV1262
 HV1262.Click photographs - Photos may exist for this station.
 HV1262
 HV1262.The dynamic height is computed by dividing the NAVD 88
 HV1262.geopotential number by the normal gravity value computed on the
 HV1262.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1262.degrees latitude (g = 980.6199 gals.).
 HV1262
 HV1262.The modeled gravity was interpolated from observed gravity values.
 HV1262
 HV1262;                    North         East    Units  Estimated Accuracy
 HV1262;SPC MD       -   142,580.      405,130.      MT  (+/- 180 meters Scaled)
 HV1262
 HV1262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ318131(NAD 83)
 HV1262
 HV1262                          SUPERSEDED SURVEY CONTROL
 HV1262
 HV1262  NGVD 29 (11/26/84)   15.244  (m)           50.01   (f) ADJUSTED    1 1
 HV1262
 HV1262.Superseded values are not recommended for survey control.
 HV1262
 HV1262.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1262.See file dsdata.pdf to determine how the superseded data were derived.
 HV1262
 HV1262_MARKER: DB = BENCH MARK DISK
 HV1262_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1262_SP_SET: BRIDGE
 HV1262_STAMPING: G 3 1933
 HV1262_MARK LOGO: CGS
 HV1262_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1262
 HV1262  HISTORY     - Date     Condition        Report By
 HV1262  HISTORY     - 1933     MONUMENTED       CGS
 HV1262  HISTORY     - 1971     GOOD             NGS
 HV1262
 HV1262                          STATION DESCRIPTION
 HV1262
 HV1262'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1262'AT HYATTSVILLE.
 HV1262'AT HYATTSVILLE, ABOUT 0.1 MILE SOUTH ALONG ALTERNATE U.S. HIGHWAY
 HV1262'1 FROM THE JUNCTION OF U.S. HIGHWAY 1, 144 FEET SOUTHEAST OF THE
 HV1262'CENTER OF THE INTERSECTION OF FARRAGUT STREET, SET VERTICALLY IN
 HV1262'THE WEST FACE OF A CONCRETE RETAINING WALL FOR AN OVERPASS, 27
 HV1262'FEET EAST OF THE EAST RAIL OF THE EAST TRACK OF THE BALTIMORE AND
 HV1262'OHIO RAILROAD, AND ABOUT 4 FEET ABOVE THE LEVEL OF THE TRACKS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1126 ***********************************************************************
 JV1126  DESIGNATION -  G 30 C OF B
 JV1126  PID         -  JV1126
 JV1126  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1126  COUNTRY     -  US
 JV1126  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1126
 JV1126                         *CURRENT SURVEY CONTROL
 JV1126  ______________________________________________________________________
 JV1126* NAD 83(1986) POSITION- 39 17 32.     (N) 076 34 35.     (W)   SCALED
 JV1126* NAVD 88 ORTHO HEIGHT -     7.854 (meters)       25.77  (feet) ADJUSTED
 JV1126  ______________________________________________________________________
 JV1126  GEOID HEIGHT    -        -32.813 (meters)                     GEOID18
 JV1126  DYNAMIC HEIGHT  -          7.850 (meters)       25.75  (feet) COMP
 JV1126  MODELED GRAVITY -    980,101.9   (mgal)                       NAVD 88
 JV1126
 JV1126  VERT ORDER      -  FIRST     CLASS I
 JV1126
 JV1126.The horizontal coordinates were scaled from a map and have
 JV1126.an estimated accuracy of +/- 6 seconds.
 JV1126
 JV1126.The orthometric height was determined by differential leveling and
 JV1126.adjusted by the NATIONAL GEODETIC SURVEY
 JV1126.in June 1991.
 JV1126
 JV1126.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1126.GEOID18 height accuracy estimate available here.
 JV1126
 JV1126.Click photographs - Photos may exist for this station.
 JV1126
 JV1126.The dynamic height is computed by dividing the NAVD 88
 JV1126.geopotential number by the normal gravity value computed on the
 JV1126.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1126.degrees latitude (g = 980.6199 gals.).
 JV1126
 JV1126.The modeled gravity was interpolated from observed gravity values.
 JV1126
 JV1126;                    North         East    Units  Estimated Accuracy
 JV1126;SPC MD       -   180,530.      436,540.      MT  (+/- 180 meters Scaled)
 JV1126
 JV1126_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ640503(NAD 83)
 JV1126
 JV1126                          SUPERSEDED SURVEY CONTROL
 JV1126
 JV1126  NGVD 29 (11/26/84)    8.097  (m)           26.56   (f) ADJUSTED    1 1
 JV1126
 JV1126.Superseded values are not recommended for survey control.
 JV1126
 JV1126.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1126.See file dsdata.pdf to determine how the superseded data were derived.
 JV1126
 JV1126_MARKER: DD = SURVEY DISK
 JV1126_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1126_STAMPING: G 30
 JV1126_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1126+STABILITY: SURFACE MOTION
 JV1126
 JV1126  HISTORY     - Date     Condition        Report By
 JV1126  HISTORY     - UNK      MONUMENTED       MD0050
 JV1126  HISTORY     - 1959     GOOD             CGS
 JV1126  HISTORY     - 1971     GOOD             NGS
 JV1126  HISTORY     - 20020121 MARK NOT FOUND   USPSQD
 JV1126
 JV1126                          STATION DESCRIPTION
 JV1126
 JV1126'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1126'AT BALTIMORE.
 JV1126'AT BALTIMORE, AT THE SOUTHWEST CORNER OF THE INTERSECTION OF
 JV1126'EAST BALTIMORE STREET AND SOUTH LINWOOD AVENUE, NEAR THE
 JV1126'NORTHEAST CORNER OF PATERSON PARK, 5 FEET SOUTH OF THE SOUTH
 JV1126'CURB OF EAST BALTIMORE STREET, 7 FEET WEST OF THE WEST CURB
 JV1126'OF SOUTH LINWOOD AVENUE, SET IN THE TOP OF A CONCRETE POST
 JV1126'3 INCHES BELOW THE LEVEL OF THE SIDEWALK AND PROTECTED BY A
 JV1126'CAST IRON COVER MARKED CITY OF BALTIMORE SURVEY POINT.
 JV1126
 JV1126                          STATION RECOVERY (1971)
 JV1126
 JV1126'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1126'RECOVERED IN GOOD CONDITION.
 JV1126
 JV1126                          STATION RECOVERY (2002)
 JV1126
 JV1126'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV1126'MARK PROBABLY DESTROYED DURING CONSTRUCTION OF CONCRETE HANDICAPPED
 JV1126'ACCESS RAMP
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0406 ***********************************************************************
 JV0406  DESIGNATION -  G 31
 JV0406  PID         -  JV0406
 JV0406  STATE/COUNTY-  MD/HARFORD
 JV0406  COUNTRY     -  US
 JV0406  USGS QUAD   -  EDGEWOOD (2016)
 JV0406
 JV0406                         *CURRENT SURVEY CONTROL
 JV0406  ______________________________________________________________________
 JV0406* NAD 83(1986) POSITION- 39 26 22.     (N) 076 19 52.     (W)   SCALED
 JV0406* NAVD 88 ORTHO HEIGHT -    30.915 (meters)      101.43  (feet) ADJUSTED
 JV0406  ______________________________________________________________________
 JV0406  GEOID HEIGHT    -        -33.047 (meters)                     GEOID18
 JV0406  DYNAMIC HEIGHT  -         30.899 (meters)      101.37  (feet) COMP
 JV0406  MODELED GRAVITY -    980,104.1   (mgal)                       NAVD 88
 JV0406
 JV0406  VERT ORDER      -  FIRST     CLASS I
 JV0406
 JV0406.The horizontal coordinates were scaled from a map and have
 JV0406.an estimated accuracy of +/- 6 seconds.
 JV0406
 JV0406.The orthometric height was determined by differential leveling and
 JV0406.adjusted by the NATIONAL GEODETIC SURVEY
 JV0406.in June 1991.
 JV0406
 JV0406.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0406.GEOID18 height accuracy estimate available here.
 JV0406
 JV0406.Click photographs - Photos may exist for this station.
 JV0406
 JV0406.The dynamic height is computed by dividing the NAVD 88
 JV0406.geopotential number by the normal gravity value computed on the
 JV0406.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0406.degrees latitude (g = 980.6199 gals.).
 JV0406
 JV0406.The modeled gravity was interpolated from observed gravity values.
 JV0406
 JV0406;                    North         East    Units  Estimated Accuracy
 JV0406;SPC MD       -   197,000.      457,580.      MT  (+/- 180 meters Scaled)
 JV0406
 JV0406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ854663(NAD 83)
 JV0406
 JV0406                          SUPERSEDED SURVEY CONTROL
 JV0406
 JV0406  NGVD 29 (11/26/84)   31.161  (m)          102.23   (f) ADJUSTED    1 1
 JV0406
 JV0406.Superseded values are not recommended for survey control.
 JV0406
 JV0406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0406.See file dsdata.pdf to determine how the superseded data were derived.
 JV0406
 JV0406_MARKER: DB = BENCH MARK DISK
 JV0406_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0406_STAMPING: G 31 1959
 JV0406_MARK LOGO: CGS
 JV0406_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0406+STABILITY: SURFACE MOTION
 JV0406_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0406+SATELLITE: SATELLITE OBSERVATIONS - October 10, 1989
 JV0406
 JV0406  HISTORY     - Date     Condition        Report By
 JV0406  HISTORY     - 1959     MONUMENTED       CGS
 JV0406  HISTORY     - 1971     GOOD             NGS
 JV0406  HISTORY     - 1979     GOOD             NGS
 JV0406  HISTORY     - 19891010 GOOD             NGS
 JV0406  HISTORY     - 1990     GOOD             USPSQD
 JV0406  HISTORY     - 20160512 GOOD             USPSQD
 JV0406
 JV0406                          STATION DESCRIPTION
 JV0406
 JV0406'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0406'0.4 MI NE FROM JOPPA.
 JV0406'ABOUT 0.45 MILE NORTHEAST ALONG STATE HIGHWAY 7 FROM THE
 JV0406'TRINITY LUTHERAN CHURCH AND CEMETERY AT JOPPA, NEAR THE
 JV0406'INTERSECTION OF THE HIGHWAY AND CLATON ROAD, 19 FEET SOUTH OF THE
 JV0406'CENTER LINE OF THE HIGHWAY, 152 1/2 FEET EAST OF THE CENTER
 JV0406'LINE OF THE ROAD, 17 1/2 FEET EAST OF POWER POLE NUMBER 56823,
 JV0406'134 1/2 FEET WEST OF A 24-INCH TUBULAR CONCRETE CULVERT UNDER A
 JV0406'PRIVATE DRIVEWAY LEADING SOUTH, 1.5 FEET WEST OF A METAL WITNESS
 JV0406'POST, ABOUT LEVEL WITH THE HIGHWAY, AND SET IN THE TOP OF A
 JV0406'CONCRETE POST PROJECTING 1 INCH.
 JV0406
 JV0406                          STATION RECOVERY (1979)
 JV0406
 JV0406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0406'RECOVERED IN GOOD CONDITION.
 JV0406
 JV0406                          STATION RECOVERY (1989)
 JV0406
 JV0406'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0406'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION FOLLOWS.  1.2 KM
 JV0406'(0.75 MI) EASTERLY ALONG STATE HIGHWAY 7 FROM ITS JUNCTION WITH STATE
 JV0406'HIGHWAY 152 IN JOPPA, 46.5 M (152.6 FT) EAST OF THE CENTERLINE OF
 JV0406'CLAYTON ROAD, 41.0 M (134.5 FT) WEST OF THE WEST END OF A PIPE
 JV0406'CULVERT UNDER A DRIVEWAY, 5.8 M (19.0 FT) SOUTH OF THE CENTERLINE OF
 JV0406'THE HIGHWAY, 5.3 M (17.4 FT) EAST OF UTILITY POLE NUMBER 56823, LEVEL
 JV0406'WITH THE HIGHWAY, AND IN A CONCRETE MONUMENT THAT PROJECTS 0.1 M (0.3
 JV0406'FT) ABOVE THE GROUND SURFACE.
 JV0406
 JV0406                          STATION RECOVERY (1990)
 JV0406
 JV0406'RECOVERY NOTE BY US POWER SQUADRON 1990 (ELD)
 JV0406'RECOVERED IN GOOD CONDITION.
 JV0406
 JV0406                          STATION RECOVERY (2016)
 JV0406
 JV0406'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 JV0406'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2180 ***********************************************************************
 JV2180  DESIGNATION -  G 34
 JV2180  PID         -  JV2180
 JV2180  STATE/COUNTY-  MD/MONTGOMERY
 JV2180  COUNTRY     -  US
 JV2180  USGS QUAD   -  ROCKVILLE (2016)
 JV2180
 JV2180                         *CURRENT SURVEY CONTROL
 JV2180  ______________________________________________________________________
 JV2180* NAD 83(1986) POSITION- 39 05 07.     (N) 077 08 50.     (W)   SCALED
 JV2180* NAVD 88 ORTHO HEIGHT -   132.248 (meters)      433.88  (feet) ADJUSTED
 JV2180  ______________________________________________________________________
 JV2180  GEOID HEIGHT    -        -31.729 (meters)                     GEOID18
 JV2180  DYNAMIC HEIGHT  -        132.179 (meters)      433.66  (feet) COMP
 JV2180  MODELED GRAVITY -    980,100.2   (mgal)                       NAVD 88
 JV2180
 JV2180  VERT ORDER      -  FIRST     CLASS II
 JV2180
 JV2180.The horizontal coordinates were scaled from a map and have
 JV2180.an estimated accuracy of +/- 6 seconds.
 JV2180
 JV2180.The orthometric height was determined by differential leveling and
 JV2180.adjusted by the NATIONAL GEODETIC SURVEY
 JV2180.in June 1991.
 JV2180
 JV2180.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2180.GEOID18 height accuracy estimate available here.
 JV2180
 JV2180.Click photographs - Photos may exist for this station.
 JV2180
 JV2180.The dynamic height is computed by dividing the NAVD 88
 JV2180.geopotential number by the normal gravity value computed on the
 JV2180.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2180.degrees latitude (g = 980.6199 gals.).
 JV2180
 JV2180.The modeled gravity was interpolated from observed gravity values.
 JV2180
 JV2180;                    North         East    Units  Estimated Accuracy
 JV2180;SPC MD       -   157,480.      387,260.      MT  (+/- 180 meters Scaled)
 JV2180
 JV2180_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ142284(NAD 83)
 JV2180
 JV2180                          SUPERSEDED SURVEY CONTROL
 JV2180
 JV2180  NGVD 29 (11/26/84)  132.467  (m)          434.60   (f) ADJUSTED    1 2
 JV2180
 JV2180.Superseded values are not recommended for survey control.
 JV2180
 JV2180.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2180.See file dsdata.pdf to determine how the superseded data were derived.
 JV2180
 JV2180_MARKER: DB = BENCH MARK DISK
 JV2180_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2180_SP_SET: UNDERPASS
 JV2180_STAMPING: G 34 1938
 JV2180_MARK LOGO: CGS
 JV2180_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2180
 JV2180  HISTORY     - Date     Condition        Report By
 JV2180  HISTORY     - 1938     MONUMENTED       CGS
 JV2180  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2180
 JV2180                          STATION DESCRIPTION
 JV2180
 JV2180'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2180'0.4 MI N FROM ROCKVILLE.
 JV2180'ON THE METROPOLITAN BRANCH OF THE B. AND O.R.R. 0.4 MILE NORTH
 JV2180'OF THE ROCKVILLE STATION SET IN THE NORTHEAST CORNER OF CONCRETE
 JV2180'RETAINING WALL OF UNDERPASS LEADING TO CEMENT BLOCK AND BRICK
 JV2180'SHOP.  4 FT EAST OF CENTER LINE OF NORTHBOUND TRACK.  1 FT BELOW
 JV2180'THE LEVEL OF THE GROUND.
 JV2180
 JV2180                          STATION RECOVERY (1987)
 JV2180
 JV2180'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2180'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2181 ***********************************************************************
 JV2181  DESIGNATION -  G 34 RESET 1944 BORR
 JV2181  PID         -  JV2181
 JV2181  STATE/COUNTY-  MD/MONTGOMERY
 JV2181  COUNTRY     -  US
 JV2181  USGS QUAD   -  ROCKVILLE (2016)
 JV2181
 JV2181                         *CURRENT SURVEY CONTROL
 JV2181  ______________________________________________________________________
 JV2181* NAD 83(1986) POSITION- 39 05 06.     (N) 077 08 51.     (W)   SCALED
 JV2181* NAVD 88 ORTHO HEIGHT -   132.470 (meters)      434.61  (feet) ADJUSTED
 JV2181  ______________________________________________________________________
 JV2181  GEOID HEIGHT    -        -31.729 (meters)                     GEOID18
 JV2181  DYNAMIC HEIGHT  -        132.401 (meters)      434.39  (feet) COMP
 JV2181  MODELED GRAVITY -    980,100.2   (mgal)                       NAVD 88
 JV2181
 JV2181  VERT ORDER      -  FIRST     CLASS II
 JV2181
 JV2181.The horizontal coordinates were scaled from a map and have
 JV2181.an estimated accuracy of +/- 6 seconds.
 JV2181
 JV2181.The orthometric height was determined by differential leveling and
 JV2181.adjusted by the NATIONAL GEODETIC SURVEY
 JV2181.in June 1991.
 JV2181
 JV2181.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2181.GEOID18 height accuracy estimate available here.
 JV2181
 JV2181.Click photographs - Photos may exist for this station.
 JV2181
 JV2181.The dynamic height is computed by dividing the NAVD 88
 JV2181.geopotential number by the normal gravity value computed on the
 JV2181.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2181.degrees latitude (g = 980.6199 gals.).
 JV2181
 JV2181.The modeled gravity was interpolated from observed gravity values.
 JV2181
 JV2181;                    North         East    Units  Estimated Accuracy
 JV2181;SPC MD       -   157,450.      387,240.      MT  (+/- 180 meters Scaled)
 JV2181
 JV2181_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ142284(NAD 83)
 JV2181
 JV2181                          SUPERSEDED SURVEY CONTROL
 JV2181
 JV2181  NGVD 29 (11/26/84)  132.687  (m)          435.32   (f) ADJUSTED    1 2
 JV2181
 JV2181.Superseded values are not recommended for survey control.
 JV2181
 JV2181.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2181.See file dsdata.pdf to determine how the superseded data were derived.
 JV2181
 JV2181_MARKER: DB = BENCH MARK DISK
 JV2181_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2181_SP_SET: BRIDGE
 JV2181_STAMPING: G 34 RESET 1944
 JV2181_MARK LOGO: CGS
 JV2181_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2181
 JV2181  HISTORY     - Date     Condition        Report By
 JV2181  HISTORY     - 1944     MONUMENTED       BORR
 JV2181  HISTORY     - 1966     GOOD             CGS
 JV2181  HISTORY     - 1979     GOOD             NGS
 JV2181  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2181
 JV2181                          STATION DESCRIPTION
 JV2181
 JV2181'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 JV2181'AT ROCKVILLE.
 JV2181'AT ROCKVILLE, MONTGOMERY COUNTY, 0.2 MILE NORTHWEST ALONG THE
 JV2181'BALTIMORE AND OHIO RAILROAD FROM THE STATION, AT BRIDGE 17-B,
 JV2181'IN THE TOP OF THE NORTHEAST BACK WALL OF THE NORTHWEST ABUTMENT,
 JV2181'11.4 FEET NORTHEAST OF THE CENTER LINE OF THE WEST-BOUND TRACK,
 JV2181'AND 2.6 FEET LOWER THAN THE TOP OF THE RAIL.  A STANDARD DISK,
 JV2181'STAMPED G 34 RESET 1944.  NOTE-- THIS BENCH MARK WAS ESTABLISHED
 JV2181'AND ITS ELEVATION DETERMINED BY ENGINEERS OF THE BALTIMORE AND
 JV2181'OHIO RAILROAD IN 1944.
 JV2181
 JV2181                          STATION RECOVERY (1979)
 JV2181
 JV2181'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2181'RECOVERED IN GOOD CONDITION.
 JV2181
 JV2181                          STATION RECOVERY (1987)
 JV2181
 JV2181'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2181'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3182 ***********************************************************************
 JV3182  DESIGNATION -  G 35
 JV3182  PID         -  JV3182
 JV3182  STATE/COUNTY-  MD/FREDERICK
 JV3182  COUNTRY     -  US
 JV3182  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3182
 JV3182                         *CURRENT SURVEY CONTROL
 JV3182  ______________________________________________________________________
 JV3182* NAD 83(1986) POSITION- 39 16 36.     (N) 077 32 42.     (W)   SCALED
 JV3182* NAVD 88 ORTHO HEIGHT -    70.939 (meters)      232.74  (feet) ADJUSTED
 JV3182  ______________________________________________________________________
 JV3182  GEOID HEIGHT    -        -32.739 (meters)                     GEOID18
 JV3182  DYNAMIC HEIGHT  -         70.900 (meters)      232.61  (feet) COMP
 JV3182  MODELED GRAVITY -    980,082.7   (mgal)                       NAVD 88
 JV3182
 JV3182  VERT ORDER      -  FIRST     CLASS II
 JV3182
 JV3182.The horizontal coordinates were scaled from a map and have
 JV3182.an estimated accuracy of +/- 6 seconds.
 JV3182
 JV3182.The orthometric height was determined by differential leveling and
 JV3182.adjusted by the NATIONAL GEODETIC SURVEY
 JV3182.in June 1991.
 JV3182
 JV3182.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3182.GEOID18 height accuracy estimate available here.
 JV3182
 JV3182.Click photographs - Photos may exist for this station.
 JV3182
 JV3182.The dynamic height is computed by dividing the NAVD 88
 JV3182.geopotential number by the normal gravity value computed on the
 JV3182.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3182.degrees latitude (g = 980.6199 gals.).
 JV3182
 JV3182.The modeled gravity was interpolated from observed gravity values.
 JV3182
 JV3182;                    North         East    Units  Estimated Accuracy
 JV3182;SPC MD       -   178,860.      352,980.      MT  (+/- 180 meters Scaled)
 JV3182
 JV3182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ804505(NAD 83)
 JV3182
 JV3182                          SUPERSEDED SURVEY CONTROL
 JV3182
 JV3182  NGVD 29 (11/26/84)   71.156  (m)          233.45   (f) ADJUSTED    1 2
 JV3182
 JV3182.Superseded values are not recommended for survey control.
 JV3182
 JV3182.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3182.See file dsdata.pdf to determine how the superseded data were derived.
 JV3182
 JV3182_MARKER: DB = BENCH MARK DISK
 JV3182_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3182_SP_SET: RETAINING WALL
 JV3182_STAMPING: G 35 1938
 JV3182_MARK LOGO: CGS
 JV3182_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3182
 JV3182  HISTORY     - Date     Condition        Report By
 JV3182  HISTORY     - 1938     MONUMENTED       CGS
 JV3182  HISTORY     - 1942     GOOD             CGS
 JV3182
 JV3182                          STATION DESCRIPTION
 JV3182
 JV3182'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV3182'0.7 MI NW FROM POINT OF ROCKS.
 JV3182'0.7 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV3182'THE STATION AT POINT OF ROCKS, FREDERICK COUNTY, 350 FEET
 JV3182'NORTHWEST OF THE NORTHWEST ENTRANCE TO POINT OF ROCKS TUNNEL,
 JV3182'50 FEET WEST OF A CONCRETE CONTROL-BOOTH FOR THE RAILROAD TELEPHONE
 JV3182'SYSTEM, BETWEEN THE TRACK AND AN OLD CANAL, 15 FEET SOUTHWEST
 JV3182'OF THE CENTER LINE OF THE EAST-BOUND TRACK, IN THE TOP OF A
 JV3182'CONCRETE RETAINING WALL, 10 INCHES WEST OF THE EAST END, AND
 JV3182'8 INCHES BELOW THE LEVEL OF THE RAILS.  A STANDARD DISK,
 JV3182'STAMPED G 35 1938.
 JV3182
 JV3182                          STATION RECOVERY (1942)
 JV3182
 JV3182'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV3182'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1404 ***********************************************************************
 JV1404  DESIGNATION -  G 36 RESET
 JV1404  PID         -  JV1404
 JV1404  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1404  COUNTRY     -  US
 JV1404  USGS QUAD   -  ODENTON (2016)
 JV1404
 JV1404                         *CURRENT SURVEY CONTROL
 JV1404  ______________________________________________________________________
 JV1404* NAD 83(1986) POSITION- 39 03 27.     (N) 076 39 16.     (W)   SCALED
 JV1404* NAVD 88 ORTHO HEIGHT -    38.98  (meters)      127.9   (feet) RESET
 JV1404  ______________________________________________________________________
 JV1404  GEOID HEIGHT    -        -32.824 (meters)                     GEOID18
 JV1404  VERT ORDER      -  THIRD
 JV1404
 JV1404.The horizontal coordinates were scaled from a map and have
 JV1404.an estimated accuracy of +/- 6 seconds.
 JV1404
 JV1404.The orthometric height was computed from unverified reset data.
 JV1404
 JV1404.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1404.GEOID18 height accuracy estimate available here.
 JV1404
 JV1404.Click photographs - Photos may exist for this station.
 JV1404
 JV1404;                    North         East    Units  Estimated Accuracy
 JV1404;SPC MD       -   154,450.      429,910.      MT  (+/- 180 meters Scaled)
 JV1404
 JV1404_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ568244(NAD 83)
 JV1404
 JV1404                          SUPERSEDED SURVEY CONTROL
 JV1404
 JV1404  NGVD 29 (??/??/??)   39.21   (m)          128.6    (f) RESET       3  
 JV1404
 JV1404.Superseded values are not recommended for survey control.
 JV1404
 JV1404.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1404.See file dsdata.pdf to determine how the superseded data were derived.
 JV1404
 JV1404_MARKER: DB = BENCH MARK DISK
 JV1404_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV1404_STAMPING: G 36 RESET 1951
 JV1404_MARK LOGO: CGS
 JV1404_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1404
 JV1404  HISTORY     - Date     Condition        Report By
 JV1404  HISTORY     - 1951     MONUMENTED       CGS
 JV1404
 JV1404                          STATION DESCRIPTION
 JV1404
 JV1404'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV1404'AT MILLERSVILLE.
 JV1404'AT MILLERSVILLE, (ANDERSONS CORNER), ANNE ARUNDEL COUNTY, 100
 JV1404'FEET EAST OF THE INTERSECTION OF STATE HWY. 301 AND THE ODENTON
 JV1404'ROAD 38.5 FEET NORTH OF THE CENTERLINE OF THE ODENTON ROAD, 34.5
 JV1404'FEET SOUTHWEST OF THE SOUTHEAST CORNER OF A FRAME GARAGE, 7.2
 JV1404'FEET SOUTH OF A POLE AND 5.2 FEET EAST OF THE SOUTHEAST CORNER OF
 JV1404'A FRAME SERVICE STATION.  A STANDARD DISK, STAMPED G 36 RESET 1951
 JV1404'AND SET IN THE TOP OF A CONCRETE-FILLED 6-INCH TERRA COTTA PIPE,
 JV1404'FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0717 ***********************************************************************
 HV0717  DESIGNATION -  G 37
 HV0717  PID         -  HV0717
 HV0717  STATE/COUNTY-  MD/CALVERT
 HV0717  COUNTRY     -  US
 HV0717  USGS QUAD   -  BROOMES ISLAND (2016)
 HV0717
 HV0717                         *CURRENT SURVEY CONTROL
 HV0717  ______________________________________________________________________
 HV0717* NAD 83(1986) POSITION- 38 29 13.     (N) 076 32 34.     (W)   SCALED
 HV0717* NAVD 88 ORTHO HEIGHT -    47.588 (meters)      156.13  (feet) ADJUSTED
 HV0717  ______________________________________________________________________
 HV0717  GEOID HEIGHT    -        -34.040 (meters)                     GEOID18
 HV0717  DYNAMIC HEIGHT  -         47.559 (meters)      156.03  (feet) COMP
 HV0717  MODELED GRAVITY -    980,015.0   (mgal)                       NAVD 88
 HV0717
 HV0717  VERT ORDER      -  FIRST     CLASS II
 HV0717
 HV0717.The horizontal coordinates were scaled from a map and have
 HV0717.an estimated accuracy of +/- 6 seconds.
 HV0717
 HV0717.The orthometric height was determined by differential leveling and
 HV0717.adjusted by the NATIONAL GEODETIC SURVEY
 HV0717.in June 1991.
 HV0717
 HV0717.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0717.GEOID18 height accuracy estimate available here.
 HV0717
 HV0717.Click photographs - Photos may exist for this station.
 HV0717
 HV0717.The dynamic height is computed by dividing the NAVD 88
 HV0717.geopotential number by the normal gravity value computed on the
 HV0717.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0717.degrees latitude (g = 980.6199 gals.).
 HV0717
 HV0717.The modeled gravity was interpolated from observed gravity values.
 HV0717
 HV0717;                    North         East    Units  Estimated Accuracy
 HV0717;SPC MD       -    91,150.      439,890.      MT  (+/- 180 meters Scaled)
 HV0717
 HV0717_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH654609(NAD 83)
 HV0717
 HV0717                          SUPERSEDED SURVEY CONTROL
 HV0717
 HV0717  NGVD 29 (11/26/84)   47.876  (m)          157.07   (f) ADJUSTED    1 2
 HV0717
 HV0717.Superseded values are not recommended for survey control.
 HV0717
 HV0717.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0717.See file dsdata.pdf to determine how the superseded data were derived.
 HV0717
 HV0717_MARKER: DB = BENCH MARK DISK
 HV0717_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0717_STAMPING: G 37 1941
 HV0717_MARK LOGO: CGS
 HV0717_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0717+STABILITY: SURFACE MOTION
 HV0717
 HV0717  HISTORY     - Date     Condition        Report By
 HV0717  HISTORY     - 1941     MONUMENTED       CGS
 HV0717  HISTORY     - 1972     GOOD             NGS
 HV0717  HISTORY     - 20020607 MARK NOT FOUND   MDSHA
 HV0717
 HV0717                          STATION DESCRIPTION
 HV0717
 HV0717'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV0717'4.6 MI SE FROM PRINCE FREDERICK.
 HV0717'3.6 MILES SOUTHEAST ALONG STATE HIGHWAY 2 FROM THE POST OFFICE
 HV0717'AT PRINCE FREDERICK, CALVERT COUNTY, THENCE 1.0 MILE SOUTH
 HV0717'ALONG THE ROAD LEADING TO BROOMES ISLAND, AT THE JUNCTION OF A
 HV0717'PRIVATE ROAD LEADING NORTH TO A FARMHOUSE, 106 FEET SOUTH OF THE
 HV0717'SOUTHEAST CORNER OF THE FARMHOUSE, 40.5 FEET NORTHEAST OF THE
 HV0717'MAIN ROAD, 20.6 FEET SOUTHWEST OF THE SOUTHEAST GATEPOST, AND 1
 HV0717'FOOT EAST OF A WHITE WOODEN WITNESS POST.  A STANDARD DISK,
 HV0717'STAMPED G 37 1941 AND SET IN THE TOP OF A CONCRETE POST.
 HV0717
 HV0717                          STATION RECOVERY (2002)
 HV0717
 HV0717'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV0717'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1390 ***********************************************************************
 JV1390  DESIGNATION -  G 39
 JV1390  PID         -  JV1390
 JV1390  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1390  COUNTRY     -  US
 JV1390  USGS QUAD   -  LAUREL (2016)
 JV1390
 JV1390                         *CURRENT SURVEY CONTROL
 JV1390  ______________________________________________________________________
 JV1390* NAD 83(1986) POSITION- 39 00 45.     (N) 076 46 18.     (W)   SCALED
 JV1390* NAVD 88 ORTHO HEIGHT -    50.495 (meters)      165.67  (feet) ADJUSTED
 JV1390  ______________________________________________________________________
 JV1390  GEOID HEIGHT    -        -32.549 (meters)                     GEOID18
 JV1390  DYNAMIC HEIGHT  -         50.468 (meters)      165.58  (feet) COMP
 JV1390  MODELED GRAVITY -    980,085.5   (mgal)                       NAVD 88
 JV1390
 JV1390  VERT ORDER      -  FIRST     CLASS II
 JV1390
 JV1390.The horizontal coordinates were scaled from a map and have
 JV1390.an estimated accuracy of +/- 6 seconds.
 JV1390
 JV1390.The orthometric height was determined by differential leveling and
 JV1390.adjusted by the NATIONAL GEODETIC SURVEY
 JV1390.in June 1991.
 JV1390
 JV1390.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1390.GEOID18 height accuracy estimate available here.
 JV1390
 JV1390.Click photographs - Photos may exist for this station.
 JV1390
 JV1390.The dynamic height is computed by dividing the NAVD 88
 JV1390.geopotential number by the normal gravity value computed on the
 JV1390.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1390.degrees latitude (g = 980.6199 gals.).
 JV1390
 JV1390.The modeled gravity was interpolated from observed gravity values.
 JV1390
 JV1390;                    North         East    Units  Estimated Accuracy
 JV1390;SPC MD       -   149,420.      419,780.      MT  (+/- 180 meters Scaled)
 JV1390
 JV1390_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ466196(NAD 83)
 JV1390
 JV1390                          SUPERSEDED SURVEY CONTROL
 JV1390
 JV1390  NGVD 29 (11/26/84)   50.718  (m)          166.40   (f) ADJUSTED    1 2
 JV1390
 JV1390.Superseded values are not recommended for survey control.
 JV1390
 JV1390.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1390.See file dsdata.pdf to determine how the superseded data were derived.
 JV1390
 JV1390_MARKER: DB = BENCH MARK DISK
 JV1390_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1390+WITH SETTING: PAVEMENT
 JV1390_SP_SET: POLE BASE
 JV1390_STAMPING: G 39 1941
 JV1390_MARK LOGO: CGS
 JV1390_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1390+STABILITY: SURFACE MOTION
 JV1390
 JV1390  HISTORY     - Date     Condition        Report By
 JV1390  HISTORY     - 1941     MONUMENTED       CGS
 JV1390  HISTORY     - 1956     GOOD             CGS
 JV1390
 JV1390                          STATION DESCRIPTION
 JV1390
 JV1390'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1390'6.2 MI SW FROM ODENTON.
 JV1390'IN PRINCE GEORGES COUNTY, ABOUT 6.2 MILES SOUTHWEST ALONG THE
 JV1390'PENNSYLVANIA RAILROAD FROM THE STATION AT ODENTON, ANNE ARUNDEL
 JV1390'COUNTY, ABOUT 110 FEET NORTHEAST OF MILEPOST 120, AT
 JV1390'POWER-TRANSMISSION LINE POLE 119-98, IN THE TOP OF THE SOUTH
 JV1390'CORNER OF THE CONCRETE BASE, AND 21.4 FEET NORTHWEST OF THE
 JV1390'NORTHWEST RAIL OF THE NORTHWEST TRACK.  A STANDARD DISK, STAMPED
 JV1390'G 39 1941.
 JV1390
 JV1390                          STATION RECOVERY (1956)
 JV1390
 JV1390'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956
 JV1390'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0966 ***********************************************************************
 HV0966  DESIGNATION -  G 40
 HV0966  PID         -  HV0966
 HV0966  STATE/COUNTY-  MD/CHARLES
 HV0966  COUNTRY     -  US
 HV0966  USGS QUAD   -  HUGHESVILLE (2016)
 HV0966
 HV0966                         *CURRENT SURVEY CONTROL
 HV0966  ______________________________________________________________________
 HV0966* NAD 83(1986) POSITION- 38 33 07.     (N) 076 49 56.     (W)   SCALED
 HV0966* NAVD 88 ORTHO HEIGHT -    57.549 (meters)      188.81  (feet) ADJUSTED
 HV0966  ______________________________________________________________________
 HV0966  GEOID HEIGHT    -        -33.328 (meters)                     GEOID18
 HV0966  DYNAMIC HEIGHT  -         57.513 (meters)      188.69  (feet) COMP
 HV0966  MODELED GRAVITY -    980,021.0   (mgal)                       NAVD 88
 HV0966
 HV0966  VERT ORDER      -  FIRST     CLASS II
 HV0966
 HV0966.The horizontal coordinates were scaled from a map and have
 HV0966.an estimated accuracy of +/- 6 seconds.
 HV0966
 HV0966.The orthometric height was determined by differential leveling and
 HV0966.adjusted by the NATIONAL GEODETIC SURVEY
 HV0966.in June 1991.
 HV0966
 HV0966.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0966.GEOID18 height accuracy estimate available here.
 HV0966
 HV0966.Click photographs - Photos may exist for this station.
 HV0966
 HV0966.The dynamic height is computed by dividing the NAVD 88
 HV0966.geopotential number by the normal gravity value computed on the
 HV0966.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0966.degrees latitude (g = 980.6199 gals.).
 HV0966
 HV0966.The modeled gravity was interpolated from observed gravity values.
 HV0966
 HV0966;                    North         East    Units  Estimated Accuracy
 HV0966;SPC MD       -    98,280.      414,630.      MT  (+/- 180 meters Scaled)
 HV0966
 HV0966_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH403686(NAD 83)
 HV0966
 HV0966                          SUPERSEDED SURVEY CONTROL
 HV0966
 HV0966  NGVD 29 (11/26/84)   57.783  (m)          189.58   (f) ADJUSTED    1 2
 HV0966
 HV0966.Superseded values are not recommended for survey control.
 HV0966
 HV0966.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0966.See file dsdata.pdf to determine how the superseded data were derived.
 HV0966
 HV0966_MARKER: DB = BENCH MARK DISK
 HV0966_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0966_SP_SET: CULVERT
 HV0966_STAMPING: G 40 1941
 HV0966_MARK LOGO: CGS
 HV0966_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0966
 HV0966  HISTORY     - Date     Condition        Report By
 HV0966  HISTORY     - 1941     MONUMENTED       CGS
 HV0966  HISTORY     - 1966     GOOD             MDSRC
 HV0966  HISTORY     - 1969     GOOD             CGS
 HV0966
 HV0966                          STATION DESCRIPTION
 HV0966
 HV0966'DESCRIBED BY MD STATE ROADS COMM 1966
 HV0966'7.1 MI SE FROM WALDORF.
 HV0966'ABOUT 7.1 MILES SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE
 HV0966'PENNSYLVANIA RAILROAD STATION AT WALDORF, CHARLES COUNTY, 73.5
 HV0966'FEET NORTHWEST OF POWER-TRANSMISSION LINE POLE 395, AT AN 18-INCH
 HV0966'CONCRETE CULVERT, IN THE TOP OF THE SOUTHEAST CORNER OF THE
 HV0966'SOUTHWEST HEAD WALL, AND 33 FEET SOUTHWEST OF THE CENTER LINE OF
 HV0966'THE HIGHWAY.  A STANDARD DISK, STAMPED G 40 1941.
 HV0966
 HV0966                          STATION RECOVERY (1969)
 HV0966
 HV0966'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969
 HV0966'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0547 ***********************************************************************
 HV0547  DESIGNATION -  G 41
 HV0547  PID         -  HV0547
 HV0547  STATE/COUNTY-  MD/ST MARYS
 HV0547  COUNTRY     -  US
 HV0547  USGS QUAD   -  LEONARDTOWN (2016)
 HV0547
 HV0547                         *CURRENT SURVEY CONTROL
 HV0547  ______________________________________________________________________
 HV0547* NAD 83(1986) POSITION- 38 17 54.     (N) 076 38 20.     (W)   SCALED
 HV0547* NAVD 88 ORTHO HEIGHT -    23.171 (meters)       76.02  (feet) POSTED
 HV0547  ______________________________________________________________________
 HV0547  GEOID HEIGHT    -        -33.872 (meters)                     GEOID18
 HV0547  DYNAMIC HEIGHT  -         23.16  (meters)       76.0   (feet) COMP
 HV0547  MODELED GRAVITY -    980,036.5   (mgal)                       NAVD 88
 HV0547
 HV0547  VERT ORDER      -  * POSTED, SEE BELOW
 HV0547
 HV0547.The horizontal coordinates were scaled from a map and have
 HV0547.an estimated accuracy of +/- 6 seconds.
 HV0547
 HV0547.The orthometric height was determined by differential leveling
 HV0547.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0547
 HV0547.* This is a POSTED BENCH MARK height.
 HV0547
 HV0547.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0547.GEOID18 height accuracy estimate available here.
 HV0547
 HV0547.Click photographs - Photos may exist for this station.
 HV0547
 HV0547.The dynamic height is computed by dividing the NAVD 88
 HV0547.geopotential number by the normal gravity value computed on the
 HV0547.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0547.degrees latitude (g = 980.6199 gals.).
 HV0547
 HV0547.The modeled gravity was interpolated from observed gravity values.
 HV0547
 HV0547;                    North         East    Units  Estimated Accuracy
 HV0547;SPC MD       -    70,180.      431,590.      MT  (+/- 180 meters Scaled)
 HV0547
 HV0547_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH566401(NAD 83)
 HV0547
 HV0547                          SUPERSEDED SURVEY CONTROL
 HV0547
 HV0547  NGVD 29 (11/26/84)   23.496  (m)           77.09   (f) ADJUSTED    1 2
 HV0547
 HV0547.Superseded values are not recommended for survey control.
 HV0547
 HV0547.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0547.See file dsdata.pdf to determine how the superseded data were derived.
 HV0547
 HV0547_MARKER: DB = BENCH MARK DISK
 HV0547_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0547_SP_SET: CULVERT
 HV0547_STAMPING: G 41 1941
 HV0547_MARK LOGO: CGS
 HV0547_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0547
 HV0547  HISTORY     - Date     Condition        Report By
 HV0547  HISTORY     - 1941     MONUMENTED       CGS
 HV0547
 HV0547                          STATION DESCRIPTION
 HV0547
 HV0547'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0547'0.8 MI NW FROM LEONARDTOWN.
 HV0547'0.8 MILE NORTHWEST ALONG STATE HIGHWAY 5 FROM THE POST OFFICE
 HV0547'AT LEONARDTOWN, AT THE NORTHWEST EDGE OF TOWN, SET IN THE
 HV0547'SOUTHEAST CORNER OF THE SOUTHWEST HEAD-WALL OF A 36-INCH
 HV0547'CONCRETE CULVERT UNDER THE HIGHWAY, 267 FEET NORTHWEST OF
 HV0547'LEONARDTOWN SIGN POST, 18.7 FEET SOUTHWEST OF CENTER-LINE OF
 HV0547'HIGHWAY, 88 FEET NORTH OF POWER-LINE POLE NO. 949, 119 FEET
 HV0547'SOUTHEAST OF POWER-LINE POLE NO. 948.  A STANDARD DISK STAMPED
 HV0547'G-41 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0548 ***********************************************************************
 HV0548  DESIGNATION -  G 41 RESET
 HV0548  PID         -  HV0548
 HV0548  STATE/COUNTY-  MD/ST MARYS
 HV0548  COUNTRY     -  US
 HV0548  USGS QUAD   -  LEONARDTOWN (2016)
 HV0548
 HV0548                         *CURRENT SURVEY CONTROL
 HV0548  ______________________________________________________________________
 HV0548* NAD 83(1986) POSITION- 38 17 54.     (N) 076 38 20.     (W)   SCALED
 HV0548* NAVD 88 ORTHO HEIGHT -    24.40  (+/-2cm)       80.1   (feet) VERTCON3
 HV0548  ______________________________________________________________________
 HV0548  GEOID HEIGHT    -        -33.872 (meters)                     GEOID18
 HV0548  VERT ORDER      -  THIRD (See Below)
 HV0548
 HV0548.The horizontal coordinates were scaled from a map and have
 HV0548.an estimated accuracy of +/- 6 seconds.
 HV0548
 HV0548.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0548.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0548
 HV0548.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0548.GEOID18 height accuracy estimate available here.
 HV0548
 HV0548.The vertical order pertains to the NGVD 29 superseded value.
 HV0548
 HV0548.Click photographs - Photos may exist for this station.
 HV0548
 HV0548;                    North         East    Units  Estimated Accuracy
 HV0548;SPC MD       -    70,180.      431,590.      MT  (+/- 180 meters Scaled)
 HV0548
 HV0548_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH566401(NAD 83)
 HV0548
 HV0548                          SUPERSEDED SURVEY CONTROL
 HV0548
 HV0548  NGVD 29 (??/??/??)   24.75   (m)           81.2    (f) RESET       3  
 HV0548
 HV0548.Superseded values are not recommended for survey control.
 HV0548
 HV0548.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0548.See file dsdata.pdf to determine how the superseded data were derived.
 HV0548
 HV0548_MARKER: DB = BENCH MARK DISK
 HV0548_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0548_STAMPING: G 41 RESET 1967
 HV0548_MARK LOGO: CGS
 HV0548_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0548+STABILITY: SURFACE MOTION
 HV0548
 HV0548  HISTORY     - Date     Condition        Report By
 HV0548  HISTORY     - 1967     MONUMENTED       MDDT
 HV0548  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0548
 HV0548                          STATION DESCRIPTION
 HV0548
 HV0548'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1967
 HV0548'0.8 MI NW FROM LEONARDTOWN.
 HV0548'0.8 MILE NORTHWEST ALONG STATE HIGHWAY 5 FROM THE COURTHOUSE AT
 HV0548'LEONARDTOWN, 34 FEET WEST OF POWER LINE POLE 948, 53.6 FEET
 HV0548'SOUTHWEST OF THE CENTER LINE OF STATE HIGHWAY 5, 61 FEET NORTH
 HV0548'OF THE NORTHEAST CORNER OF A TWO-STORY BRICK HOUSE, ABOUT 150
 HV0548'FEET SOUTHEAST OF THE LEONARDTOWN TOWNSHIP SIGNPOST, SET IN THE
 HV0548'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 HV0548
 HV0548                          STATION RECOVERY (1971)
 HV0548
 HV0548'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0548'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3220 ***********************************************************************
 JV3220  DESIGNATION -  G 42
 JV3220  PID         -  JV3220
 JV3220  STATE/COUNTY-  MD/WASHINGTON
 JV3220  COUNTRY     -  US
 JV3220  USGS QUAD   -  CLEAR SPRING (2016)
 JV3220
 JV3220                         *CURRENT SURVEY CONTROL
 JV3220  ______________________________________________________________________
 JV3220* NAD 83(1986) POSITION- 39 37 44.     (N) 077 53 34.     (W)   SCALED
 JV3220* NAVD 88 ORTHO HEIGHT -   141.562 (meters)      464.44  (feet) ADJUSTED
 JV3220  ______________________________________________________________________
 JV3220  GEOID HEIGHT    -        -34.307 (meters)                     GEOID18
 JV3220  DYNAMIC HEIGHT  -        141.479 (meters)      464.17  (feet) COMP
 JV3220  MODELED GRAVITY -    980,039.4   (mgal)                       NAVD 88
 JV3220
 JV3220  VERT ORDER      -  FIRST     CLASS II
 JV3220
 JV3220.The horizontal coordinates were scaled from a map and have
 JV3220.an estimated accuracy of +/- 6 seconds.
 JV3220
 JV3220.The orthometric height was determined by differential leveling and
 JV3220.adjusted by the NATIONAL GEODETIC SURVEY
 JV3220.in June 1991.
 JV3220
 JV3220.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3220.GEOID18 height accuracy estimate available here.
 JV3220
 JV3220.Click photographs - Photos may exist for this station.
 JV3220
 JV3220.The dynamic height is computed by dividing the NAVD 88
 JV3220.geopotential number by the normal gravity value computed on the
 JV3220.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3220.degrees latitude (g = 980.6199 gals.).
 JV3220
 JV3220.The modeled gravity was interpolated from observed gravity values.
 JV3220
 JV3220;                    North         East    Units  Estimated Accuracy
 JV3220;SPC MD       -   218,200.      323,350.      MT  (+/- 180 meters Scaled)
 JV3220
 JV3220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ517905(NAD 83)
 JV3220
 JV3220                          SUPERSEDED SURVEY CONTROL
 JV3220
 JV3220  NGVD 29 (11/26/84)  141.764  (m)          465.10   (f) ADJUSTED    1 2
 JV3220
 JV3220.Superseded values are not recommended for survey control.
 JV3220
 JV3220.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3220.See file dsdata.pdf to determine how the superseded data were derived.
 JV3220
 JV3220_MARKER: DB = BENCH MARK DISK
 JV3220_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3220_STAMPING: G 42 1941
 JV3220_MARK LOGO: CGS
 JV3220_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3220+STABILITY: SURFACE MOTION
 JV3220
 JV3220  HISTORY     - Date     Condition        Report By
 JV3220  HISTORY     - 1941     MONUMENTED       CGS
 JV3220  HISTORY     - 1974     MARK NOT FOUND   USGS
 JV3220  HISTORY     - 19901025 GOOD             NGS
 JV3220
 JV3220                          STATION DESCRIPTION
 JV3220
 JV3220'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV3220'10.2 MI SW FROM HAGERSTOWN.
 JV3220'10.2 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JV3220'THE STATION AT HAGERSTOWN, 8 RAILS NORTHWEST OF MILE-POST NO. 97,
 JV3220'31.7 FEET SOUTHWEST OF THE SOUTHWEST RAIL OF THE WEST-BOUND
 JV3220'TRACK, 0.1 MILE SOUTHEAST OF A PUBLIC ROAD CROSSING, 81 FEET
 JV3220'SOUTHEAST OF A SECTION CAR HOUSE, 3 FEET SOUTHWEST OF THE
 JV3220'6TH TELEGRAPH POLE SOUTHEAST OF THE CROSSING, 0.8 FOOT NORTHEAST
 JV3220'OF A WHITE MARKER POST STENCILED USBM.  A STANDARD DISK STAMPED
 JV3220'G 42 1941 AND SET IN THE TOP OF A PRE-CAST CONCRETE POST.
 JV3220
 JV3220                          STATION RECOVERY (1974)
 JV3220
 JV3220'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1974
 JV3220'MARK NOT FOUND.
 JV3220
 JV3220                          STATION RECOVERY (1990)
 JV3220
 JV3220'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV3220'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0025 ***********************************************************************
 JW0025  DESIGNATION -  G 43
 JW0025  PID         -  JW0025
 JW0025  STATE/COUNTY-  MD/WASHINGTON
 JW0025  COUNTRY     -  US
 JW0025  USGS QUAD   -  BELLEGROVE (2016)
 JW0025
 JW0025                         *CURRENT SURVEY CONTROL
 JW0025  ______________________________________________________________________
 JW0025* NAD 83(1986) POSITION- 39 37 53.     (N) 078 15 49.     (W)   SCALED
 JW0025* NAVD 88 ORTHO HEIGHT -   136.542 (meters)      447.97  (feet) ADJUSTED
 JW0025  ______________________________________________________________________
 JW0025  GEOID HEIGHT    -        -33.887 (meters)                     GEOID18
 JW0025  DYNAMIC HEIGHT  -        136.461 (meters)      447.71  (feet) COMP
 JW0025  MODELED GRAVITY -    980,039.2   (mgal)                       NAVD 88
 JW0025
 JW0025  VERT ORDER      -  FIRST     CLASS II
 JW0025
 JW0025.The horizontal coordinates were scaled from a map and have
 JW0025.an estimated accuracy of +/- 6 seconds.
 JW0025
 JW0025.The orthometric height was determined by differential leveling and
 JW0025.adjusted by the NATIONAL GEODETIC SURVEY
 JW0025.in June 1991.
 JW0025
 JW0025.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0025.GEOID18 height accuracy estimate available here.
 JW0025
 JW0025.Click photographs - Photos may exist for this station.
 JW0025
 JW0025.The dynamic height is computed by dividing the NAVD 88
 JW0025.geopotential number by the normal gravity value computed on the
 JW0025.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0025.degrees latitude (g = 980.6199 gals.).
 JW0025
 JW0025.The modeled gravity was interpolated from observed gravity values.
 JW0025
 JW0025;                    North         East    Units  Estimated Accuracy
 JW0025;SPC MD       -   218,850.      291,520.      MT  (+/- 180 meters Scaled)
 JW0025
 JW0025_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD348904(NAD 83)
 JW0025
 JW0025                          SUPERSEDED SURVEY CONTROL
 JW0025
 JW0025  NGVD 29 (??/??/92)  136.747  (m)          448.64   (f) ADJ UNCH    1 2
 JW0025
 JW0025.Superseded values are not recommended for survey control.
 JW0025
 JW0025.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0025.See file dsdata.pdf to determine how the superseded data were derived.
 JW0025
 JW0025_MARKER: DB = BENCH MARK DISK
 JW0025_SETTING: 80 = SET IN A BOULDER
 JW0025_STAMPING: G 43 1941
 JW0025_MARK LOGO: CGS
 JW0025_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0025+STABILITY: SURFACE MOTION
 JW0025
 JW0025  HISTORY     - Date     Condition        Report By
 JW0025  HISTORY     - 1941     MONUMENTED       CGS
 JW0025
 JW0025                          STATION DESCRIPTION
 JW0025
 JW0025'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0025'7.7 MI SW FROM HANCOCK.
 JW0025'7.7 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0025'STATION AT HANCOCK, 83.8 FEET WEST OF MILE-POST NO. 123, SET IN
 JW0025'A ROCK BOULDER, 9.1 FEET NORTHWEST OF THE NORTHWEST RAIL OF THE
 JW0025'TRACK, 23 RAILS NORTHEAST OF A ROAD CROSSING, 59 FEET NORTHEAST
 JW0025'OF A SMALL WATER STREAM ON THE NORTHWEST SIDE OF THE TRACK.  A
 JW0025'STANDARD DISK STAMPED G-43 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0734 ***********************************************************************
 JV0734  DESIGNATION -  G 44
 JV0734  PID         -  JV0734
 JV0734  STATE/COUNTY-  MD/BALTIMORE
 JV0734  COUNTRY     -  US
 JV0734  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0734
 JV0734                         *CURRENT SURVEY CONTROL
 JV0734  ______________________________________________________________________
 JV0734* NAD 83(1986) POSITION- 39 18 59.     (N) 076 50 31.     (W)   SCALED
 JV0734* NAVD 88 ORTHO HEIGHT -    78.330 (meters)      256.99  (feet) ADJUSTED
 JV0734  ______________________________________________________________________
 JV0734  GEOID HEIGHT    -        -32.133 (meters)                     GEOID18
 JV0734  DYNAMIC HEIGHT  -         78.289 (meters)      256.85  (feet) COMP
 JV0734  MODELED GRAVITY -    980,098.6   (mgal)                       NAVD 88
 JV0734
 JV0734  VERT ORDER      -  FIRST     CLASS II
 JV0734
 JV0734.The horizontal coordinates were scaled from a map and have
 JV0734.an estimated accuracy of +/- 6 seconds.
 JV0734
 JV0734.The orthometric height was determined by differential leveling and
 JV0734.adjusted by the NATIONAL GEODETIC SURVEY
 JV0734.in June 1991.
 JV0734
 JV0734.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0734.GEOID18 height accuracy estimate available here.
 JV0734
 JV0734.Click photographs - Photos may exist for this station.
 JV0734
 JV0734.The dynamic height is computed by dividing the NAVD 88
 JV0734.geopotential number by the normal gravity value computed on the
 JV0734.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0734.degrees latitude (g = 980.6199 gals.).
 JV0734
 JV0734.The modeled gravity was interpolated from observed gravity values.
 JV0734
 JV0734;                    North         East    Units  Estimated Accuracy
 JV0734;SPC MD       -   183,140.      413,630.      MT  (+/- 180 meters Scaled)
 JV0734
 JV0734_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ412535(NAD 83)
 JV0734
 JV0734                          SUPERSEDED SURVEY CONTROL
 JV0734
 JV0734  NGVD 29 (11/26/84)   78.546  (m)          257.70   (f) ADJUSTED    1 2
 JV0734
 JV0734.Superseded values are not recommended for survey control.
 JV0734
 JV0734.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0734.See file dsdata.pdf to determine how the superseded data were derived.
 JV0734
 JV0734_MARKER: DB = BENCH MARK DISK
 JV0734_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0734_SP_SET: BRIDGE
 JV0734_STAMPING: G 44 1941
 JV0734_MARK LOGO: CGS
 JV0734_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0734
 JV0734  HISTORY     - Date     Condition        Report By
 JV0734  HISTORY     - 1941     MONUMENTED       CGS
 JV0734
 JV0734                          STATION DESCRIPTION
 JV0734
 JV0734'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0734'7 MI NW FROM ELLICOTT CITY.
 JV0734'ABOUT 7.0 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0734'FROM ELLICOTT CITY, HOWARD COUNTY, ABOUT 0.3 MILE WEST OF THE
 JV0734'WEST END OF DORSEY RUN TUNNEL, ABOUT 0.2 MILE EAST OF THE EAST
 JV0734'END OF THE DAVIS TUNNEL, ABOUT 0.1 MILE EAST OF MILEPOST 21, AT
 JV0734'BRIDGE 19 A, IN THE TOP OF THE EAST ABUTMENT, 1.0 FOOT SOUTH OF
 JV0734'THE NORTH END, AND 9.6 FEET NORTH OF THE NORTH RAIL OF THE
 JV0734'WEST-BOUND TRACK.  A STANDARD DISK, STAMPED G 44 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0763 ***********************************************************************
 JV0763  DESIGNATION -  G 45 RESET
 JV0763  PID         -  JV0763
 JV0763  STATE/COUNTY-  MD/CARROLL
 JV0763  COUNTRY     -  US
 JV0763  USGS QUAD   -  FINKSBURG (2016)
 JV0763
 JV0763                         *CURRENT SURVEY CONTROL
 JV0763  ______________________________________________________________________
 JV0763* NAD 83(1986) POSITION- 39 27 53.     (N) 076 56 05.     (W)   SCALED
 JV0763* NAVD 88 ORTHO HEIGHT -   197.37  (meters)      647.5   (feet) RESET
 JV0763  ______________________________________________________________________
 JV0763  GEOID HEIGHT    -        -32.017 (meters)                     GEOID18
 JV0763  VERT ORDER      -  THIRD
 JV0763
 JV0763.The horizontal coordinates were scaled from a map and have
 JV0763.an estimated accuracy of +/- 6 seconds.
 JV0763
 JV0763.The orthometric height was computed from unverified reset data.
 JV0763
 JV0763.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0763.GEOID18 height accuracy estimate available here.
 JV0763
 JV0763.Click photographs - Photos may exist for this station.
 JV0763
 JV0763;                    North         East    Units  Estimated Accuracy
 JV0763;SPC MD       -   199,600.      405,620.      MT  (+/- 180 meters Scaled)
 JV0763
 JV0763_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ335701(NAD 83)
 JV0763
 JV0763                          SUPERSEDED SURVEY CONTROL
 JV0763
 JV0763  NGVD 29 (??/??/??)  200.14   (m)          656.6    (f) RESET       3  
 JV0763
 JV0763.Superseded values are not recommended for survey control.
 JV0763
 JV0763.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0763.See file dsdata.pdf to determine how the superseded data were derived.
 JV0763
 JV0763_MARKER: DB = BENCH MARK DISK
 JV0763_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0763_SP_SET: ISLAND
 JV0763_STAMPING: G 45 RESET 1964
 JV0763_MARK LOGO: MDSRC
 JV0763_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0763_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0763
 JV0763  HISTORY     - Date     Condition        Report By
 JV0763  HISTORY     - 1964     MONUMENTED       MDSRC
 JV0763  HISTORY     - 19960508 POOR             MDSHA
 JV0763
 JV0763                          STATION DESCRIPTION
 JV0763
 JV0763'DESCRIBED BY MD STATE ROADS COMM 1964
 JV0763'AT GAMBER.
 JV0763'THIS STATION IS LOCATED AT THE T JUNCTION OF MD. 32 AND MD. 91
 JV0763'IN GAMBER, MARYLAND, 26.0 FEET EAST OF THE CENTERLINE OF MD.
 JV0763'32, AND 11.4 FEET WEST OF THE SOUTHWEST CORNER OF THE GROCERY
 JV0763'STORE PORCH, AND SET FLUSH IN SOUTH END OF GAS PUMP ISLAND AT
 JV0763'THE H.T. FORD AND SONS GROCERY STORE.
 JV0763
 JV0763                          STATION RECOVERY (1996)
 JV0763
 JV0763'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1996 (SFK)
 JV0763'MARK WAS RECOVERED IN POOR CONDITION.
 JV0763'
 JV0763'NOTE- THE GROCERY STORE WAS BEING DESTROYED AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2152 ***********************************************************************
 JV2152  DESIGNATION -  G 46
 JV2152  PID         -  JV2152
 JV2152  STATE/COUNTY-  MD/FREDERICK
 JV2152  COUNTRY     -  US
 JV2152  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2152
 JV2152                         *CURRENT SURVEY CONTROL
 JV2152  ______________________________________________________________________
 JV2152* NAD 83(1986) POSITION- 39 21 11.     (N) 077 25 24.     (W)   SCALED
 JV2152* NAVD 88 ORTHO HEIGHT -    83.675 (meters)      274.52  (feet) ADJUSTED
 JV2152  ______________________________________________________________________
 JV2152  GEOID HEIGHT    -        -32.621 (meters)                     GEOID18
 JV2152  DYNAMIC HEIGHT  -         83.630 (meters)      274.38  (feet) COMP
 JV2152  MODELED GRAVITY -    980,086.7   (mgal)                       NAVD 88
 JV2152
 JV2152  VERT ORDER      -  FIRST     CLASS II
 JV2152
 JV2152.The horizontal coordinates were scaled from a map and have
 JV2152.an estimated accuracy of +/- 6 seconds.
 JV2152
 JV2152.The orthometric height was determined by differential leveling and
 JV2152.adjusted by the NATIONAL GEODETIC SURVEY
 JV2152.in June 1991.
 JV2152
 JV2152.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2152.GEOID18 height accuracy estimate available here.
 JV2152
 JV2152.Click photographs - Photos may exist for this station.
 JV2152
 JV2152.The dynamic height is computed by dividing the NAVD 88
 JV2152.geopotential number by the normal gravity value computed on the
 JV2152.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2152.degrees latitude (g = 980.6199 gals.).
 JV2152
 JV2152.The modeled gravity was interpolated from observed gravity values.
 JV2152
 JV2152;                    North         East    Units  Estimated Accuracy
 JV2152;SPC MD       -   187,290.      363,510.      MT  (+/- 180 meters Scaled)
 JV2152
 JV2152_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ911587(NAD 83)
 JV2152
 JV2152                          SUPERSEDED SURVEY CONTROL
 JV2152
 JV2152  NGVD 29 (11/26/84)   83.896  (m)          275.25   (f) ADJUSTED    1 2
 JV2152
 JV2152.Superseded values are not recommended for survey control.
 JV2152
 JV2152.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2152.See file dsdata.pdf to determine how the superseded data were derived.
 JV2152
 JV2152_MARKER: DB = BENCH MARK DISK
 JV2152_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2152_STAMPING: G 46 1941
 JV2152_MARK LOGO: CGS
 JV2152_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2152+STABILITY: SURFACE MOTION
 JV2152
 JV2152  HISTORY     - Date     Condition        Report By
 JV2152  HISTORY     - 1941     MONUMENTED       CGS
 JV2152  HISTORY     - 1953     MARK NOT FOUND   CGS
 JV2152
 JV2152                          STATION DESCRIPTION
 JV2152
 JV2152'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2152'2.3 MI SW FROM FREDERICK JUNCTION.
 JV2152'ABOUT 2.3 MILES SOUTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2152'FROM THE STATION AT FREDERICK JUNCTION, FREDERICK COUNTY, 13.5
 JV2152'FEET WEST-SOUTHWEST OF THE FIFTEENTH POLE WEST OF MILEPOST 60, AT
 JV2152'THE CROSSING OF U.S. HIGHWAY 15, 36.0 FEET FROM THE CENTER LINE
 JV2152'OF THE HIGHWAY, 19.4 FEET SOUTHEAST OF THE SOUTHEAST RAIL OF THE
 JV2152'EAST-BOUND TRACK, AND 10.5 FEET SOUTHWEST OF A WHITE WOODEN POST
 JV2152'STENCILED U.S.B.M.  A STANDARD DISK, STAMPED G 46 1941 AND SET
 JV2152'IN THE TOP OF A CONCRETE POST.
 JV2152
 JV2152                          STATION RECOVERY (1953)
 JV2152
 JV2152'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953
 JV2152'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0398 ***********************************************************************
 JW0398  DESIGNATION -  G 47
 JW0398  PID         -  JW0398
 JW0398  STATE/COUNTY-  MD/ALLEGANY
 JW0398  COUNTRY     -  US
 JW0398  USGS QUAD   -  CUMBERLAND (2016)
 JW0398
 JW0398                         *CURRENT SURVEY CONTROL
 JW0398  ______________________________________________________________________
 JW0398* NAD 83(1986) POSITION- 39 37 32.     (N) 078 46 12.     (W)   SCALED
 JW0398* NAVD 88 ORTHO HEIGHT -   190.433 (meters)      624.78  (feet) ADJUSTED
 JW0398  ______________________________________________________________________
 JW0398  GEOID HEIGHT    -        -32.732 (meters)                     GEOID18
 JW0398  DYNAMIC HEIGHT  -        190.323 (meters)      624.42  (feet) COMP
 JW0398  MODELED GRAVITY -    980,045.4   (mgal)                       NAVD 88
 JW0398
 JW0398  VERT ORDER      -  FIRST     CLASS II
 JW0398
 JW0398.The horizontal coordinates were scaled from a map and have
 JW0398.an estimated accuracy of +/- 6 seconds.
 JW0398
 JW0398.The orthometric height was determined by differential leveling and
 JW0398.adjusted by the NATIONAL GEODETIC SURVEY
 JW0398.in June 1991.
 JW0398
 JW0398.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0398.GEOID18 height accuracy estimate available here.
 JW0398
 JW0398.Click photographs - Photos may exist for this station.
 JW0398
 JW0398.The dynamic height is computed by dividing the NAVD 88
 JW0398.geopotential number by the normal gravity value computed on the
 JW0398.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0398.degrees latitude (g = 980.6199 gals.).
 JW0398
 JW0398.The modeled gravity was interpolated from observed gravity values.
 JW0398
 JW0398;                    North         East    Units  Estimated Accuracy
 JW0398;SPC MD       -   218,930.      248,040.      MT  (+/- 180 meters Scaled)
 JW0398
 JW0398_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD913885(NAD 83)
 JW0398
 JW0398                          SUPERSEDED SURVEY CONTROL
 JW0398
 JW0398  NGVD 29 (??/??/92)  190.629  (m)          625.42   (f) ADJ UNCH    1 2
 JW0398
 JW0398.Superseded values are not recommended for survey control.
 JW0398
 JW0398.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0398.See file dsdata.pdf to determine how the superseded data were derived.
 JW0398
 JW0398_MARKER: DB = BENCH MARK DISK
 JW0398_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0398_SP_SET: FOUNDATION
 JW0398_STAMPING: G 47 1941
 JW0398_MARK LOGO: CGS
 JW0398_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0398
 JW0398  HISTORY     - Date     Condition        Report By
 JW0398  HISTORY     - 1941     MONUMENTED       CGS
 JW0398
 JW0398                          STATION DESCRIPTION
 JW0398
 JW0398'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0398'2.7 MI S FROM CUMBERLAND.
 JW0398'2.7 MILES SOUTH ALONG THE WESTERN MARYLAND RAILROAD FROM THE
 JW0398'STATION AT CUMBERLAND, SET IN THE WEST CORNER OF A CONCRETE
 JW0398'FOUNDATION, 14.5 FEET SOUTHEAST OF THE SOUTH CORNER OF THE TEXACO
 JW0398'BULK PLANT, 31.9 NORTHEAST OF THE NORTHEAST RAIL OF THE MAIN
 JW0398'TRACK, 164 FEET NORTHWEST OF THE NORTHWEST CURB OF VIRGINIA
 JW0398'AVENUE.  A STANDARD DISK STAMPED G-47 1941 AND SET FLUSH WITH THE
 JW0398'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1574 ***********************************************************************
 JW1574  DESIGNATION -  G 47 RESET
 JW1574  PID         -  JW1574
 JW1574  STATE/COUNTY-  MD/ALLEGANY
 JW1574  COUNTRY     -  US
 JW1574  USGS QUAD   -  CUMBERLAND (2016)
 JW1574
 JW1574                         *CURRENT SURVEY CONTROL
 JW1574  ______________________________________________________________________
 JW1574* NAD 83(1986) POSITION- 39 37 32.     (N) 078 46 12.     (W)   SCALED
 JW1574* NAVD 88 ORTHO HEIGHT -   191.82  (meters)      629.3   (feet) RESET
 JW1574  ______________________________________________________________________
 JW1574  GEOID HEIGHT    -        -32.732 (meters)                     GEOID18
 JW1574  VERT ORDER      -  THIRD
 JW1574
 JW1574.The horizontal coordinates were scaled from a map and have
 JW1574.an estimated accuracy of +/- 6 seconds.
 JW1574
 JW1574.The orthometric height was computed from unverified reset data.
 JW1574
 JW1574.No vertical observational check was made to the station.
 JW1574
 JW1574.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1574.GEOID18 height accuracy estimate available here.
 JW1574
 JW1574.Click photographs - Photos may exist for this station.
 JW1574
 JW1574;                    North         East    Units  Estimated Accuracy
 JW1574;SPC MD       -   218,930.      248,040.      MT  (+/- 180 meters Scaled)
 JW1574
 JW1574_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD913885(NAD 83)
 JW1574
 JW1574                          SUPERSEDED SURVEY CONTROL
 JW1574
 JW1574  NGVD 29 (11/18/05)  192.01   (m)          630.0    (f) RESET       3  
 JW1574
 JW1574.Superseded values are not recommended for survey control.
 JW1574
 JW1574.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1574.See file dsdata.pdf to determine how the superseded data were derived.
 JW1574
 JW1574_MARKER: DB = BENCH MARK DISK
 JW1574_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JW1574+WITH SETTING: PAVEMENT
 JW1574_SP_SET: SIGN BASE
 JW1574_STAMPING: G 47 1987
 JW1574_MARK LOGO: NGS
 JW1574_MAGNETIC: N = NO MAGNETIC MATERIAL
 JW1574_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1574+STABILITY: SURFACE MOTION
 JW1574
 JW1574  HISTORY     - Date     Condition        Report By
 JW1574  HISTORY     - 1987     MONUMENTED       LOCSUR
 JW1574
 JW1574                          STATION DESCRIPTION
 JW1574
 JW1574'DESCRIBED BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1987
 JW1574'2.7 MILES SOUTH ALONG THE WESTERN MARYLAND RAILROAD FROM THE STATION
 JW1574'AT CUMBERLAND, SET IN CONCRETE FOUNDATION OF SIGN (CUMBERLAND
 JW1574'PETROLEUM), 95 FT (29.0 M) FROM SOUTHEAST CORNER OF RIVER AVE., AND
 JW1574'POTOMAC STREET, 200 FT (61.0 M) NORTHWEST OF THE NORTHWEST CURB OF
 JW1574'VIRGINIA AVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0663 ***********************************************************************
 HV0663  DESIGNATION -  G 48
 HV0663  PID         -  HV0663
 HV0663  STATE/COUNTY-  MD/ST MARYS
 HV0663  COUNTRY     -  US
 HV0663  USGS QUAD   -  ROCK POINT (2016)
 HV0663
 HV0663                         *CURRENT SURVEY CONTROL
 HV0663  ______________________________________________________________________
 HV0663* NAD 83(1986) POSITION- 38 15 15.     (N) 076 46 10.     (W)   SCALED
 HV0663* NAVD 88 ORTHO HEIGHT -     4.440 (meters)       14.57  (feet) ADJUSTED
 HV0663  ______________________________________________________________________
 HV0663  GEOID HEIGHT    -        -33.716 (meters)                     GEOID18
 HV0663  DYNAMIC HEIGHT  -          4.438 (meters)       14.56  (feet) COMP
 HV0663  MODELED GRAVITY -    980,023.7   (mgal)                       NAVD 88
 HV0663
 HV0663  VERT ORDER      -  SECOND    CLASS 0
 HV0663
 HV0663.The horizontal coordinates were scaled from a map and have
 HV0663.an estimated accuracy of +/- 6 seconds.
 HV0663
 HV0663.The orthometric height was determined by differential leveling and
 HV0663.adjusted by the NATIONAL GEODETIC SURVEY
 HV0663.in June 1991.
 HV0663
 HV0663.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0663.GEOID18 height accuracy estimate available here.
 HV0663
 HV0663.Click photographs - Photos may exist for this station.
 HV0663
 HV0663.The dynamic height is computed by dividing the NAVD 88
 HV0663.geopotential number by the normal gravity value computed on the
 HV0663.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0663.degrees latitude (g = 980.6199 gals.).
 HV0663
 HV0663.The modeled gravity was interpolated from observed gravity values.
 HV0663
 HV0663;                    North         East    Units  Estimated Accuracy
 HV0663;SPC MD       -    65,240.      420,180.      MT  (+/- 180 meters Scaled)
 HV0663
 HV0663_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH451354(NAD 83)
 HV0663
 HV0663                          SUPERSEDED SURVEY CONTROL
 HV0663
 HV0663  NGVD 29 (11/26/84)    4.721  (m)           15.49   (f) ADJUSTED    2 0
 HV0663
 HV0663.Superseded values are not recommended for survey control.
 HV0663
 HV0663.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0663.See file dsdata.pdf to determine how the superseded data were derived.
 HV0663
 HV0663_MARKER: DB = BENCH MARK DISK
 HV0663_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0663_STAMPING: G 48 1942
 HV0663_MARK LOGO: CGS
 HV0663_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0663+STABILITY: SURFACE MOTION
 HV0663
 HV0663  HISTORY     - Date     Condition        Report By
 HV0663  HISTORY     - 1942     MONUMENTED       CGS
 HV0663  HISTORY     - 1968     MARK NOT FOUND   USGS
 HV0663
 HV0663                          STATION DESCRIPTION
 HV0663
 HV0663'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0663'10.5 MI S FROM CHAPTICO.
 HV0663'THIS MARK IS ABOUT 10.5 MILES SOUTH OF THE INTERSECTION AT
 HV0663'CHAPTICO, SAINT MARYS COUNTY, ABOUT 2.5 MILES NORTH OF THE POST
 HV0663'OFFICE AT COLTON POINT, ALONG HIGHWAY 242, AT A CATHOLIC CHURCH
 HV0663'AND SCHOOL YARD, IN THE SOUTH CORNER OF THE LAWN, IN THE NORTH
 HV0663'ANGLE OF A JUNCTION OF THE HIGHWAY AND A DIRT ROAD RUNNING WEST,
 HV0663'34.6 FEET WEST OF THE CENTER LINE OF THE ROAD, 29.3 FEET NORTH
 HV0663'OF THE CENTER LINE OF THE DIRT ROAD, 3 FEET SOUTH OF A POWER POLE
 HV0663'AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST ABOUT
 HV0663'4 INCHES ABOVE THE SURFACE OF THE GROUND.
 HV0663
 HV0663                          STATION RECOVERY (1968)
 HV0663
 HV0663'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1968
 HV0663'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0693 ***********************************************************************
 HV0693  DESIGNATION -  G 49
 HV0693  PID         -  HV0693
 HV0693  STATE/COUNTY-  MD/CHARLES
 HV0693  COUNTRY     -  US
 HV0693  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0693
 HV0693                         *CURRENT SURVEY CONTROL
 HV0693  ______________________________________________________________________
 HV0693* NAD 83(1986) POSITION- 38 28 17.     (N) 076 48 40.     (W)   SCALED
 HV0693* NAVD 88 ORTHO HEIGHT -    52.484 (meters)      172.19  (feet) ADJUSTED
 HV0693  ______________________________________________________________________
 HV0693  GEOID HEIGHT    -        -33.525 (meters)                     GEOID18
 HV0693  DYNAMIC HEIGHT  -         52.451 (meters)      172.08  (feet) COMP
 HV0693  MODELED GRAVITY -    980,013.0   (mgal)                       NAVD 88
 HV0693
 HV0693  VERT ORDER      -  SECOND    CLASS 0
 HV0693
 HV0693.The horizontal coordinates were scaled from a map and have
 HV0693.an estimated accuracy of +/- 6 seconds.
 HV0693
 HV0693.The orthometric height was determined by differential leveling and
 HV0693.adjusted by the NATIONAL GEODETIC SURVEY
 HV0693.in June 1991.
 HV0693
 HV0693.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0693.GEOID18 height accuracy estimate available here.
 HV0693
 HV0693.Click photographs - Photos may exist for this station.
 HV0693
 HV0693.The dynamic height is computed by dividing the NAVD 88
 HV0693.geopotential number by the normal gravity value computed on the
 HV0693.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0693.degrees latitude (g = 980.6199 gals.).
 HV0693
 HV0693.The modeled gravity was interpolated from observed gravity values.
 HV0693
 HV0693;                    North         East    Units  Estimated Accuracy
 HV0693;SPC MD       -    89,340.      416,480.      MT  (+/- 180 meters Scaled)
 HV0693
 HV0693_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH420596(NAD 83)
 HV0693
 HV0693                          SUPERSEDED SURVEY CONTROL
 HV0693
 HV0693  NGVD 29 (11/26/84)   52.751  (m)          173.07   (f) ADJUSTED    2 0
 HV0693
 HV0693.Superseded values are not recommended for survey control.
 HV0693
 HV0693.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0693.See file dsdata.pdf to determine how the superseded data were derived.
 HV0693
 HV0693_MARKER: DB = BENCH MARK DISK
 HV0693_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0693_STAMPING: G 49 1942
 HV0693_MARK LOGO: CGS
 HV0693_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0693+STABILITY: SURFACE MOTION
 HV0693
 HV0693  HISTORY     - Date     Condition        Report By
 HV0693  HISTORY     - 1942     MONUMENTED       CGS
 HV0693
 HV0693                          STATION DESCRIPTION
 HV0693
 HV0693'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0693'2.1 MI W FROM NEW MARKET.
 HV0693'THIS MARK IS IN CHARLES COUNTY, ABOUT 2.1 MILES WEST OF THE
 HV0693'INTERSECTION AT NEW MARKET, SAINT MARYS COUNTY ALONG HIGHWAY
 HV0693'NUMBER 6, 0.9 MILE WEST OF THE COUNTY LINE, AT THE SOUTHEAST
 HV0693'CORNER OF A PASTURE THAT ENCLOSES A SMALL PINE WOODED AREA,
 HV0693'NORTHEAST AND ACROSS THE HIGHWAY FROM A FARM ROAD JUNCTION TO
 HV0693'THE SOUTH, 40 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY,
 HV0693'18 INCHES WEST OF A POWER POLE, AND IS A STANDARD DISK SET IN THE
 HV0693'TOP OF A CONCRETE POST IN LINE WITH THE PASTURE FENCE AND ABOUT
 HV0693'3 FEET FROM A WHITE WOODEN POST STENCILED USBM.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0287 ***********************************************************************
 HU0287  DESIGNATION -  G 5
 HU0287  PID         -  HU0287
 HU0287  STATE/COUNTY-  MD/WICOMICO
 HU0287  COUNTRY     -  US
 HU0287  USGS QUAD   -  WHALEYVILLE (2016)
 HU0287
 HU0287                         *CURRENT SURVEY CONTROL
 HU0287  ______________________________________________________________________
 HU0287* NAD 83(1986) POSITION- 38 23 43.     (N) 075 19 42.     (W)   SCALED
 HU0287* NAVD 88 ORTHO HEIGHT -    11.920 (meters)       39.11  (feet) ADJUSTED
 HU0287  ______________________________________________________________________
 HU0287  GEOID HEIGHT    -        -35.912 (meters)                     GEOID18
 HU0287  DYNAMIC HEIGHT  -         11.912 (meters)       39.08  (feet) COMP
 HU0287  MODELED GRAVITY -    980,009.8   (mgal)                       NAVD 88
 HU0287
 HU0287  VERT ORDER      -  SECOND    CLASS 0
 HU0287
 HU0287.The horizontal coordinates were scaled from a map and have
 HU0287.an estimated accuracy of +/- 6 seconds.
 HU0287
 HU0287.The orthometric height was determined by differential leveling and
 HU0287.adjusted by the NATIONAL GEODETIC SURVEY
 HU0287.in June 1991.
 HU0287
 HU0287.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0287.GEOID18 height accuracy estimate available here.
 HU0287
 HU0287.Click photographs - Photos may exist for this station.
 HU0287
 HU0287.The dynamic height is computed by dividing the NAVD 88
 HU0287.geopotential number by the normal gravity value computed on the
 HU0287.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0287.degrees latitude (g = 980.6199 gals.).
 HU0287
 HU0287.The modeled gravity was interpolated from observed gravity values.
 HU0287
 HU0287;                    North         East    Units  Estimated Accuracy
 HU0287;SPC MD       -    82,220.      546,030.      MT  (+/- 180 meters Scaled)
 HU0287
 HU0287_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH713497(NAD 83)
 HU0287
 HU0287                          SUPERSEDED SURVEY CONTROL
 HU0287
 HU0287  NGVD 29 (11/26/84)   12.165  (m)           39.91   (f) ADJUSTED    2 0
 HU0287
 HU0287.Superseded values are not recommended for survey control.
 HU0287
 HU0287.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0287.See file dsdata.pdf to determine how the superseded data were derived.
 HU0287
 HU0287_MARKER: DB = BENCH MARK DISK
 HU0287_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0287_STAMPING: G 5 1935
 HU0287_MARK LOGO: CGS
 HU0287_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0287+STABILITY: SURFACE MOTION
 HU0287
 HU0287  HISTORY     - Date     Condition        Report By
 HU0287  HISTORY     - 1935     MONUMENTED       CGS
 HU0287  HISTORY     - 1942     GOOD             CGS
 HU0287  HISTORY     - 19900221 MARK NOT FOUND   NGS
 HU0287  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU0287
 HU0287                          STATION DESCRIPTION
 HU0287
 HU0287'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0287'1.5 MI W FROM WHALEYVILLE.
 HU0287'IN WICOMICO COUNTY, 1.5 MILES WEST ALONG THE BALTIMORE AND
 HU0287'EASTERN RAILROAD FROM THE STATION AT WHALEYVILLE, WORCESTER
 HU0287'COUNTY, AT NEW HOPE, 27 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF
 HU0287'A CEMETERY, 36 FEET EAST OF THE CENTER OF A DIRT-ROAD CROSSING,
 HU0287'10 FEET SOUTH OF THE CENTERLINE OF A PRIVATE ROAD, 12 FEET NORTH
 HU0287'OF THE NORTH RAIL, NEAR A WHITE WOODEN WITNESS POST, AND ABOUT 1
 HU0287'FOOT HIGHER THAN THE TRACK.  A STANDARD DISK, STAMPED G 5 1935
 HU0287'AND SET IN THE TOP OF A CONCRETE POST ABOUT 2 INCHES UNDER GROUND.
 HU0287
 HU0287                          STATION RECOVERY (1990)
 HU0287
 HU0287'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0287'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THIS MARK.
 HU0287
 HU0287                          STATION RECOVERY (2003)
 HU0287
 HU0287'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0287'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0273 ***********************************************************************
 HV0273  DESIGNATION -  G 51
 HV0273  PID         -  HV0273
 HV0273  STATE/COUNTY-  MD/DORCHESTER
 HV0273  COUNTRY     -  US
 HV0273  USGS QUAD   -  CHURCH CREEK (2016)
 HV0273
 HV0273                         *CURRENT SURVEY CONTROL
 HV0273  ______________________________________________________________________
 HV0273* NAD 83(1986) POSITION- 38 30 56.     (N) 076 08 03.     (W)   SCALED
 HV0273* NAVD 88 ORTHO HEIGHT -     1.861 (meters)        6.11  (feet) ADJUSTED
 HV0273  ______________________________________________________________________
 HV0273  GEOID HEIGHT    -        -35.022 (meters)                     GEOID18
 HV0273  DYNAMIC HEIGHT  -          1.860 (meters)        6.10  (feet) COMP
 HV0273  MODELED GRAVITY -    980,013.7   (mgal)                       NAVD 88
 HV0273
 HV0273  VERT ORDER      -  SECOND    CLASS 0
 HV0273
 HV0273.The horizontal coordinates were scaled from a map and have
 HV0273.an estimated accuracy of +/- 6 seconds.
 HV0273
 HV0273.The orthometric height was determined by differential leveling and
 HV0273.adjusted by the NATIONAL GEODETIC SURVEY
 HV0273.in June 1991.
 HV0273
 HV0273.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0273.GEOID18 height accuracy estimate available here.
 HV0273
 HV0273.Click photographs - Photos may exist for this station.
 HV0273
 HV0273.The dynamic height is computed by dividing the NAVD 88
 HV0273.geopotential number by the normal gravity value computed on the
 HV0273.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0273.degrees latitude (g = 980.6199 gals.).
 HV0273
 HV0273.The modeled gravity was interpolated from observed gravity values.
 HV0273
 HV0273;                    North         East    Units  Estimated Accuracy
 HV0273;SPC MD       -    94,590.      475,510.      MT  (+/- 180 meters Scaled)
 HV0273
 HV0273_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH011636(NAD 83)
 HV0273
 HV0273                          SUPERSEDED SURVEY CONTROL
 HV0273
 HV0273  NGVD 29 (02/24/95)    2.094  (m)            6.87   (f) ADJUSTED    2 0
 HV0273  NGVD 29 (11/26/84)    2.099  (m)            6.89   (f) SUPERSEDED  2 0
 HV0273
 HV0273.Superseded values are not recommended for survey control.
 HV0273
 HV0273.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0273.See file dsdata.pdf to determine how the superseded data were derived.
 HV0273
 HV0273_MARKER: DB = BENCH MARK DISK
 HV0273_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0273_STAMPING: G 51 1942
 HV0273_MARK LOGO: CGS
 HV0273_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0273+STABILITY: SURFACE MOTION
 HV0273
 HV0273  HISTORY     - Date     Condition        Report By
 HV0273  HISTORY     - 1942     MONUMENTED       CGS
 HV0273  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0273
 HV0273                          STATION DESCRIPTION
 HV0273
 HV0273'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0273'5.1 MI SW FROM CAMBRIDGE.
 HV0273'THIS MARK IS ABOUT 5.1 MILES SOUTHWEST OF THE INTERSECTION OF RACE
 HV0273'AND WASHINGTON STREETS OF CAMBRIDGE, DORCHESTER COUNTY, ALONG
 HV0273'HIGHWAY 16, AT A GRAVEL ROAD RUNNING NORTHWEST FROM THE HIGHWAY,
 HV0273'IN THE WEST ANGLE OF THE JUNCTION, IN THE EAST CORNER OF A
 HV0273'CULTIVATED FIELD, 31 FEET NORTHWEST OF THE CENTER LINE OF THE
 HV0273'HIGHWAY, 36 FEET SOUTHWEST OF THE CENTER LINE OF THE GRAVEL ROAD,
 HV0273'AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST ABOUT
 HV0273'2 FEET FROM A STANDARD REFERENCE POST.
 HV0273
 HV0273                          STATION RECOVERY (1971)
 HV0273
 HV0273'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0273'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0470 ***********************************************************************
 HV0470  DESIGNATION -  G 52
 HV0470  PID         -  HV0470
 HV0470  STATE/COUNTY-  MD/DORCHESTER
 HV0470  COUNTRY     -  US
 HV0470  USGS QUAD   -  HONGA (2016)
 HV0470
 HV0470                         *CURRENT SURVEY CONTROL
 HV0470  ______________________________________________________________________
 HV0470* NAD 83(1986) POSITION- 38 21 59.     (N) 076 08 03.     (W)   SCALED
 HV0470* NAVD 88 ORTHO HEIGHT -     0.704 (meters)        2.31  (feet) ADJUSTED
 HV0470  ______________________________________________________________________
 HV0470  GEOID HEIGHT    -        -35.269 (meters)                     GEOID18
 HV0470  DYNAMIC HEIGHT  -          0.703 (meters)        2.31  (feet) COMP
 HV0470  MODELED GRAVITY -    979,998.3   (mgal)                       NAVD 88
 HV0470
 HV0470  VERT ORDER      -  SECOND    CLASS 0
 HV0470
 HV0470.The horizontal coordinates were scaled from a map and have
 HV0470.an estimated accuracy of +/- 6 seconds.
 HV0470
 HV0470.The orthometric height was determined by differential leveling and
 HV0470.adjusted by the NATIONAL GEODETIC SURVEY
 HV0470.in June 1991.
 HV0470
 HV0470.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0470.GEOID18 height accuracy estimate available here.
 HV0470
 HV0470.Click photographs - Photos may exist for this station.
 HV0470
 HV0470.The dynamic height is computed by dividing the NAVD 88
 HV0470.geopotential number by the normal gravity value computed on the
 HV0470.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0470.degrees latitude (g = 980.6199 gals.).
 HV0470
 HV0470.The modeled gravity was interpolated from observed gravity values.
 HV0470
 HV0470;                    North         East    Units  Estimated Accuracy
 HV0470;SPC MD       -    78,030.      475,670.      MT  (+/- 180 meters Scaled)
 HV0470
 HV0470_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH009470(NAD 83)
 HV0470
 HV0470                          SUPERSEDED SURVEY CONTROL
 HV0470
 HV0470  NGVD 29 (11/26/84)    0.928  (m)            3.04   (f) ADJUSTED    2 0
 HV0470
 HV0470.Superseded values are not recommended for survey control.
 HV0470
 HV0470.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0470.See file dsdata.pdf to determine how the superseded data were derived.
 HV0470
 HV0470_MARKER: DB = BENCH MARK DISK
 HV0470_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0470_STAMPING: G 52 1942
 HV0470_MARK LOGO: CGS
 HV0470_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0470+STABILITY: SURFACE MOTION
 HV0470
 HV0470  HISTORY     - Date     Condition        Report By
 HV0470  HISTORY     - 1942     MONUMENTED       CGS
 HV0470  HISTORY     - 1943     GOOD             CGS
 HV0470
 HV0470                          STATION DESCRIPTION
 HV0470
 HV0470'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0470'6.1 MI SE FROM GOLDEN HILL.
 HV0470'THIS MARK IS ALONG HIGHWAY 336, ABOUT 6.1 MILES SOUTHEAST OF
 HV0470'THE POST OFFICE AT GOLDEN HILL, DORCHESTER COUNTY, AT A WYE JUNCTION
 HV0470'OF THE HIGHWAY AND A GRAVEL ROAD RUNNING NORTH FROM THE HIGHWAY,
 HV0470'IN A PINE WOODED AREA, 41 FEET WEST OF THE CENTER LINE OF THE
 HV0470'HIGHWAY, JUST NORTH OF A DIM SAND ROAD LEADING WEST INTO THE
 HV0470'WOODS, ABOUT MIDWAY BETWEEN TWO BLAZED PINE TREES, AND IS A
 HV0470'STANDARD DISK SET IN THE TOP OF A CONCRETE POST AND IN LINE WITH
 HV0470'A WIRE FENCE.
 HV0470
 HV0470                          STATION RECOVERY (1943)
 HV0470
 HV0470'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 HV0470'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0072 ***********************************************************************
 HV0072  DESIGNATION -  G 53 RESET
 HV0072  PID         -  HV0072
 HV0072  STATE/COUNTY-  MD/TALBOT
 HV0072  COUNTRY     -  US
 HV0072  USGS QUAD   -  SAINT MICHAELS (2016)
 HV0072
 HV0072                         *CURRENT SURVEY CONTROL
 HV0072  ______________________________________________________________________
 HV0072* NAD 83(1986) POSITION- 38 45 19.     (N) 076 11 07.     (W)   SCALED
 HV0072* NAVD 88 ORTHO HEIGHT -     2.33  (meters)        7.6   (feet) RESET
 HV0072  ______________________________________________________________________
 HV0072  GEOID HEIGHT    -        -34.488 (meters)                     GEOID18
 HV0072  VERT ORDER      -  THIRD
 HV0072
 HV0072.The horizontal coordinates were scaled from a map and have
 HV0072.an estimated accuracy of +/- 6 seconds.
 HV0072
 HV0072.The orthometric height was computed from unverified reset data.
 HV0072
 HV0072.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0072.GEOID18 height accuracy estimate available here.
 HV0072
 HV0072.Click photographs - Photos may exist for this station.
 HV0072
 HV0072;                    North         East    Units  Estimated Accuracy
 HV0072;SPC MD       -   121,160.      470,820.      MT  (+/- 180 meters Scaled)
 HV0072
 HV0072_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH970902(NAD 83)
 HV0072
 HV0072                          SUPERSEDED SURVEY CONTROL
 HV0072
 HV0072  NGVD 29 (??/??/??)    2.56   (m)            8.4    (f) RESET       3  
 HV0072
 HV0072.Superseded values are not recommended for survey control.
 HV0072
 HV0072.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0072.See file dsdata.pdf to determine how the superseded data were derived.
 HV0072
 HV0072_MARKER: DB = BENCH MARK DISK
 HV0072_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0072_STAMPING: G 53 RESET 1954
 HV0072_MARK LOGO: CGS
 HV0072_PROJECTION: PROJECTING 5 CENTIMETERS
 HV0072_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0072+STABILITY: SURFACE MOTION
 HV0072
 HV0072  HISTORY     - Date     Condition        Report By
 HV0072  HISTORY     - 1954     MONUMENTED       MDBCSM
 HV0072  HISTORY     - 1974     MARK NOT FOUND   NGS
 HV0072  HISTORY     - 19950628 MARK NOT FOUND   USPSQD
 HV0072  HISTORY     - 19970110 MARK NOT FOUND   USPSQD
 HV0072
 HV0072                          STATION DESCRIPTION
 HV0072
 HV0072'DESCRIBED BY MD BUR SURV AND MAPS 1954
 HV0072'0.6 MI W FROM NEWCOMB.
 HV0072'0.6 MILES WEST ALONG STATE HIGHWAY 33 FROM THE BALTIMORE AND
 HV0072'EASTERN RAILROAD STATION AT NEWCOMB, TALBOT COUNTY, AT THE
 HV0072'JUNCTION OF STATE HIGHWAY 329 AND A DIRT ROAD LEADING NORTHEAST,
 HV0072'40 FEET NORTH OF STATE HIGHWAY 33, 12 FEET NORTHWEST OF THE DIRT
 HV0072'ROAD, AND 1 FOOT FROM A WIRE FENCE.  A STANDARD DISK, STAMPED G 53
 HV0072'RESET 1954 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES
 HV0072'ABOVE GROUND.  NOTE-- THIS BENCH MARK WAS ESTABLISHED AND ITS
 HV0072'ELEVATION DETERMINED BY ENGINEERS OF THE STATE BUREAU OF SURVEYS
 HV0072'AND MAPS IN JULY 1954.
 HV0072
 HV0072                          STATION RECOVERY (1974)
 HV0072
 HV0072'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 HV0072'MARK NOT FOUND.
 HV0072
 HV0072                          STATION RECOVERY (1995)
 HV0072
 HV0072'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0072'MARK NOT FOUND.
 HV0072
 HV0072                          STATION RECOVERY (1997)
 HV0072
 HV0072'RECOVERY NOTE BY US POWER SQUADRON 1997
 HV0072'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3366 ***********************************************************************
 JV3366  DESIGNATION -  G 54
 JV3366  PID         -  JV3366
 JV3366  STATE/COUNTY-  MD/WASHINGTON
 JV3366  COUNTRY     -  US
 JV3366  USGS QUAD   -  SMITHSBURG (2016)
 JV3366
 JV3366                         *CURRENT SURVEY CONTROL
 JV3366  ______________________________________________________________________
 JV3366* NAD 83(1986) POSITION- 39 41 37.     (N) 077 37 12.     (W)   SCALED
 JV3366* NAVD 88 ORTHO HEIGHT -   179.307 (meters)      588.28  (feet) ADJUSTED
 JV3366  ______________________________________________________________________
 JV3366  GEOID HEIGHT    -        -34.007 (meters)                     GEOID18
 JV3366  DYNAMIC HEIGHT  -        179.203 (meters)      587.94  (feet) COMP
 JV3366  MODELED GRAVITY -    980,044.0   (mgal)                       NAVD 88
 JV3366
 JV3366  VERT ORDER      -  SECOND    CLASS 0
 JV3366
 JV3366.The horizontal coordinates were scaled from a map and have
 JV3366.an estimated accuracy of +/- 6 seconds.
 JV3366
 JV3366.The orthometric height was determined by differential leveling and
 JV3366.adjusted by the NATIONAL GEODETIC SURVEY
 JV3366.in June 1991.
 JV3366
 JV3366.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3366.GEOID18 height accuracy estimate available here.
 JV3366
 JV3366.Click photographs - Photos may exist for this station.
 JV3366
 JV3366.The dynamic height is computed by dividing the NAVD 88
 JV3366.geopotential number by the normal gravity value computed on the
 JV3366.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3366.degrees latitude (g = 980.6199 gals.).
 JV3366
 JV3366.The modeled gravity was interpolated from observed gravity values.
 JV3366
 JV3366;                    North         East    Units  Estimated Accuracy
 JV3366;SPC MD       -   225,190.      346,820.      MT  (+/- 180 meters Scaled)
 JV3366
 JV3366_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ753970(NAD 83)
 JV3366
 JV3366                          SUPERSEDED SURVEY CONTROL
 JV3366
 JV3366  NGVD 29 (11/26/84)  179.492  (m)          588.88   (f) ADJUSTED    2 0
 JV3366
 JV3366.Superseded values are not recommended for survey control.
 JV3366
 JV3366.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3366.See file dsdata.pdf to determine how the superseded data were derived.
 JV3366
 JV3366_MARKER: DB = BENCH MARK DISK
 JV3366_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV3366_SP_SET: CULVERT HEADWALL
 JV3366_STAMPING: G 54 1942
 JV3366_MARK LOGO: CGS
 JV3366_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3366+STABILITY: SURFACE MOTION
 JV3366
 JV3366  HISTORY     - Date     Condition        Report By
 JV3366  HISTORY     - 1942     MONUMENTED       CGS
 JV3366  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3366
 JV3366                          STATION DESCRIPTION
 JV3366
 JV3366'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3366'5.7 MI SW FROM WAYNESBORO.
 JV3366'3.5 MILES SOUTHWEST ALONG PENNA. STATE HIGHWAY NO. 316 FROM THE
 JV3366'POST OFFICE AT WAYNESBORO, THENCE 2.2 MILES SOUTHWEST ALONG
 JV3366'MARYLAND STATE HIGHWAY NO. 60, SET IN THE CENTER OF THE SOUTH
 JV3366'HEAD WALL OF A TRIPLE 18-INCH PIPE CULVERT UNDER HIGHWAY, AT
 JV3366'THE EAST EDGE OF LEITERSBURG, ABOUT 0.1 MILE WEST OF THE JUNCTION
 JV3366'OF HIGHWAY NO. 60 AND ROAD LEADING NORTHEAST TO RINGGOLD, 15
 JV3366'FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, AND 6 FEET NORTHEAST
 JV3366'OF TELEPHONE POLE NO. 297.  A STANDARD DISC.
 JV3366
 JV3366                          STATION RECOVERY (1998)
 JV3366
 JV3366'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3366'THE STATION WAS SEARCHED FOR AND THE REMAINS OF THE STEM WAS FOUND.
 JV3366'THE DISK HAS BEEN SHEARED OFF AND WAS NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0707 ***********************************************************************
 HU0707  DESIGNATION -  G 55
 HU0707  PID         -  HU0707
 HU0707  STATE/COUNTY-  MD/WICOMICO
 HU0707  COUNTRY     -  US
 HU0707  USGS QUAD   -  SALISBURY (2016)
 HU0707
 HU0707                         *CURRENT SURVEY CONTROL
 HU0707  ______________________________________________________________________
 HU0707* NAD 83(1986) POSITION- 38 17 28.     (N) 075 32 25.     (W)   SCALED
 HU0707* NAVD 88 ORTHO HEIGHT -    14.273 (meters)       46.83  (feet) ADJUSTED
 HU0707  ______________________________________________________________________
 HU0707  GEOID HEIGHT    -        -35.980 (meters)                     GEOID18
 HU0707  DYNAMIC HEIGHT  -         14.264 (meters)       46.80  (feet) COMP
 HU0707  MODELED GRAVITY -    979,997.5   (mgal)                       NAVD 88
 HU0707
 HU0707  VERT ORDER      -  SECOND    CLASS 0
 HU0707
 HU0707.The horizontal coordinates were scaled from a map and have
 HU0707.an estimated accuracy of +/- 6 seconds.
 HU0707
 HU0707.The orthometric height was determined by differential leveling and
 HU0707.adjusted by the NATIONAL GEODETIC SURVEY
 HU0707.in June 1991.
 HU0707
 HU0707.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0707.GEOID18 height accuracy estimate available here.
 HU0707
 HU0707.Click photographs - Photos may exist for this station.
 HU0707
 HU0707.The dynamic height is computed by dividing the NAVD 88
 HU0707.geopotential number by the normal gravity value computed on the
 HU0707.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0707.degrees latitude (g = 980.6199 gals.).
 HU0707
 HU0707.The modeled gravity was interpolated from observed gravity values.
 HU0707
 HU0707;                    North         East    Units  Estimated Accuracy
 HU0707;SPC MD       -    70,340.      527,700.      MT  (+/- 180 meters Scaled)
 HU0707
 HU0707_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH527382(NAD 83)
 HU0707
 HU0707                          SUPERSEDED SURVEY CONTROL
 HU0707
 HU0707  NGVD 29 (11/26/84)   14.517  (m)           47.63   (f) ADJUSTED    2 0
 HU0707
 HU0707.Superseded values are not recommended for survey control.
 HU0707
 HU0707.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0707.See file dsdata.pdf to determine how the superseded data were derived.
 HU0707
 HU0707_MARKER: DB = BENCH MARK DISK
 HU0707_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0707_STAMPING: G 55 1942
 HU0707_MARK LOGO: CGS
 HU0707_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0707+STABILITY: SURFACE MOTION
 HU0707
 HU0707  HISTORY     - Date     Condition        Report By
 HU0707  HISTORY     - 1942     MONUMENTED       CGS
 HU0707  HISTORY     - 1962     GOOD             CGS
 HU0707  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0707
 HU0707                          STATION DESCRIPTION
 HU0707
 HU0707'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0707'7.3 MI SE FROM SALISBURY.
 HU0707'6.7 MILES SOUTHEAST ALONG STATE HIGHWAY 12 FROM THE PENNSYLVANIA
 HU0707'RAILROAD UNDERPASS AT SALISBURY, WICOMICO COUNTY, THENCE ABOUT
 HU0707'0.6 MILE WEST ALONG A DIRT ROAD, 21 FEET NORTHEAST OF A 16-INCH
 HU0707'CORRUGATED-IRON PIPE CULVERT, IN THE WEST CORNER OF A PINE GROVE,
 HU0707'25.5 FEET NORTH OF THE CENTER LINE OF THE ROAD, 4.7 FEET
 HU0707'SOUTHWEST OF A BLAZED PINE TREE, AND ABOUT 1.5 FEET LOWER THAN THE
 HU0707'ROAD.  A STANDARD DISK, STAMPED G 55 1942 AND SET IN THE TOP OF A
 HU0707'CONCRETE POST.  NOTE-- THE CORNERS HAVE BEEN BROKEN OFF MARK AND
 HU0707'THE BLAZED PINE TREE IS GONE.
 HU0707
 HU0707                          STATION RECOVERY (1997)
 HU0707
 HU0707'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0707'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0393 ***********************************************************************
 HU0393  DESIGNATION -  G 56 RESET
 HU0393  PID         -  HU0393
 HU0393  STATE/COUNTY-  MD/WORCESTER
 HU0393  COUNTRY     -  US
 HU0393  USGS QUAD   -  BERLIN (2016)
 HU0393
 HU0393                         *CURRENT SURVEY CONTROL
 HU0393  ______________________________________________________________________
 HU0393* NAD 83(1986) POSITION- 38 15 34.     (N) 075 09 48.     (W)   SCALED
 HU0393* NAVD 88 ORTHO HEIGHT -     2.12  (meters)        7.0   (feet) RESET
 HU0393  ______________________________________________________________________
 HU0393  GEOID HEIGHT    -        -36.135 (meters)                     GEOID18
 HU0393  VERT ORDER      -  THIRD
 HU0393
 HU0393.The horizontal coordinates were scaled from a map and have
 HU0393.an estimated accuracy of +/- 6 seconds.
 HU0393
 HU0393.The orthometric height was computed from unverified reset data.
 HU0393
 HU0393.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0393.GEOID18 height accuracy estimate available here.
 HU0393
 HU0393.Click photographs - Photos may exist for this station.
 HU0393
 HU0393;                    North         East    Units  Estimated Accuracy
 HU0393;SPC MD       -    67,420.      560,740.      MT  (+/- 180 meters Scaled)
 HU0393
 HU0393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH857346(NAD 83)
 HU0393
 HU0393                          SUPERSEDED SURVEY CONTROL
 HU0393
 HU0393  NGVD 29 (??/??/??)    2.37   (m)            7.8    (f) RESET       3  
 HU0393
 HU0393.Superseded values are not recommended for survey control.
 HU0393
 HU0393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0393.See file dsdata.pdf to determine how the superseded data were derived.
 HU0393
 HU0393_MARKER: DB = BENCH MARK DISK
 HU0393_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0393_STAMPING: G 56 RESET 1963
 HU0393_MARK LOGO: CGS
 HU0393_PROJECTION: PROJECTING 13 CENTIMETERS
 HU0393_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0393+STABILITY: SURFACE MOTION
 HU0393
 HU0393  HISTORY     - Date     Condition        Report By
 HU0393  HISTORY     - 1963     MONUMENTED       MDSRC
 HU0393  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU0393
 HU0393                          STATION DESCRIPTION
 HU0393
 HU0393'DESCRIBED BY MD STATE ROADS COMM 1963
 HU0393'6.7 MI SE FROM BERLIN.
 HU0393'ABOUT 4.5 MILES SE ALONG MD. ROUTE 376 FROM THE JUNCTION OF U.S.
 HU0393'ROUTE 113 AT BERLINE, TO THE T-JUNCTION AT MD. ROUTE 611,
 HU0393'THENCE RIGHT (SOUTH) ALONG THE COUNTY ROAD FOR 2.2 MILES TO
 HU0393'THE STATION ON THE RIGHT, 61.0 FEET W OF THE CENTERLINE OF THE
 HU0393'COUNTY ROAD AND 37.5 FEET W OF TELEPHONE POLE 176, AND SET IN A
 HU0393'CONCRETE POST PROJECTING 5 INCHES.
 HU0393
 HU0393                          STATION RECOVERY (2003)
 HU0393
 HU0393'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0393'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0717 ***********************************************************************
 HU0717  DESIGNATION -  G 58
 HU0717  PID         -  HU0717
 HU0717  STATE/COUNTY-  MD/WICOMICO
 HU0717  COUNTRY     -  US
 HU0717  USGS QUAD   -  SALISBURY (2016)
 HU0717
 HU0717                         *CURRENT SURVEY CONTROL
 HU0717  ______________________________________________________________________
 HU0717* NAD 83(1986) POSITION- 38 17 37.     (N) 075 30 38.     (W)   SCALED
 HU0717* NAVD 88 ORTHO HEIGHT -    14.854 (meters)       48.73  (feet) ADJUSTED
 HU0717  ______________________________________________________________________
 HU0717  GEOID HEIGHT    -        -35.994 (meters)                     GEOID18
 HU0717  DYNAMIC HEIGHT  -         14.844 (meters)       48.70  (feet) COMP
 HU0717  MODELED GRAVITY -    979,997.8   (mgal)                       NAVD 88
 HU0717
 HU0717  VERT ORDER      -  SECOND    CLASS 0
 HU0717
 HU0717.The horizontal coordinates were scaled from a map and have
 HU0717.an estimated accuracy of +/- 6 seconds.
 HU0717
 HU0717.The orthometric height was determined by differential leveling and
 HU0717.adjusted by the NATIONAL GEODETIC SURVEY
 HU0717.in June 1991.
 HU0717
 HU0717.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0717.GEOID18 height accuracy estimate available here.
 HU0717
 HU0717.Click photographs - Photos may exist for this station.
 HU0717
 HU0717.The dynamic height is computed by dividing the NAVD 88
 HU0717.geopotential number by the normal gravity value computed on the
 HU0717.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0717.degrees latitude (g = 980.6199 gals.).
 HU0717
 HU0717.The modeled gravity was interpolated from observed gravity values.
 HU0717
 HU0717;                    North         East    Units  Estimated Accuracy
 HU0717;SPC MD       -    70,660.      530,290.      MT  (+/- 180 meters Scaled)
 HU0717
 HU0717_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH553385(NAD 83)
 HU0717
 HU0717                          SUPERSEDED SURVEY CONTROL
 HU0717
 HU0717  NGVD 29 (11/26/84)   15.094  (m)           49.52   (f) ADJUSTED    2 0
 HU0717
 HU0717.Superseded values are not recommended for survey control.
 HU0717
 HU0717.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0717.See file dsdata.pdf to determine how the superseded data were derived.
 HU0717
 HU0717_MARKER: DB = BENCH MARK DISK
 HU0717_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0717_STAMPING: G 58 1942
 HU0717_MARK LOGO: CGS
 HU0717_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0717+STABILITY: SURFACE MOTION
 HU0717
 HU0717  HISTORY     - Date     Condition        Report By
 HU0717  HISTORY     - 1942     MONUMENTED       CGS
 HU0717  HISTORY     - 1962     GOOD             CGS
 HU0717  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0717
 HU0717                          STATION DESCRIPTION
 HU0717
 HU0717'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0717'6 MI W FROM WANGO.
 HU0717'1/4 MILE WEST ALONG A DIRT ROAD FROM THE METHODIST CHURCH AT
 HU0717'WANGO, WICOMICO COUNTY, THENCE ABOUT 1.1 MILES SOUTHWEST ALONG A
 HU0717'DIRT ROAD, THENCE ABOUT 2.6 MILES NORTHWEST ALONG A DIRT ROAD,
 HU0717'THENCE ABOUT 1.6 MILES SOUTH ALONG A DIRT ROAD, AND THENCE ABOUT
 HU0717'0.5 MILE WEST ALONG A DIRT ROAD, AT THE JUNCTION OF ANOTHER DIRT
 HU0717'ROAD LEADING NORTHEAST, 19.8 FEET SOUTH OF THE CENTER LINE OF THE
 HU0717'ROAD, 4.9 FEET SOUTHWEST OF A BLAZED PINE TREE, ABOUT MIDWAY
 HU0717'BETWEEN TWO PINE TREES, 33.4 FEET SOUTH ACROSS THE ROAD FROM A
 HU0717'POLE, AND ABOUT LEVEL WITH THE ROAD.  A STANDARD DISK, STAMPED
 HU0717'G 58 1942 AND SET IN THE TOP OF A CONCRETE POST.
 HU0717
 HU0717                          STATION RECOVERY (1997)
 HU0717
 HU0717'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0717'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0718 ***********************************************************************
 HU0718  DESIGNATION -  G 58 RESET
 HU0718  PID         -  HU0718
 HU0718  STATE/COUNTY-  MD/WICOMICO
 HU0718  COUNTRY     -  US
 HU0718  USGS QUAD   -  SALISBURY (2016)
 HU0718
 HU0718                         *CURRENT SURVEY CONTROL
 HU0718  ______________________________________________________________________
 HU0718* NAD 83(1986) POSITION- 38 17 37.     (N) 075 30 38.     (W)   SCALED
 HU0718* NAVD 88 ORTHO HEIGHT -    15.463 (meters)       50.73  (feet) ADJUSTED
 HU0718  ______________________________________________________________________
 HU0718  GEOID HEIGHT    -        -35.994 (meters)                     GEOID18
 HU0718  DYNAMIC HEIGHT  -         15.453 (meters)       50.70  (feet) COMP
 HU0718  MODELED GRAVITY -    979,997.8   (mgal)                       NAVD 88
 HU0718
 HU0718  VERT ORDER      -  SECOND    CLASS I
 HU0718
 HU0718.The horizontal coordinates were scaled from a map and have
 HU0718.an estimated accuracy of +/- 6 seconds.
 HU0718
 HU0718.The orthometric height was determined by differential leveling and
 HU0718.adjusted by the NATIONAL GEODETIC SURVEY
 HU0718.in June 1991.
 HU0718
 HU0718.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0718.GEOID18 height accuracy estimate available here.
 HU0718
 HU0718.Click photographs - Photos may exist for this station.
 HU0718
 HU0718.The dynamic height is computed by dividing the NAVD 88
 HU0718.geopotential number by the normal gravity value computed on the
 HU0718.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0718.degrees latitude (g = 980.6199 gals.).
 HU0718
 HU0718.The modeled gravity was interpolated from observed gravity values.
 HU0718
 HU0718;                    North         East    Units  Estimated Accuracy
 HU0718;SPC MD       -    70,660.      530,290.      MT  (+/- 180 meters Scaled)
 HU0718
 HU0718_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH553385(NAD 83)
 HU0718
 HU0718                          SUPERSEDED SURVEY CONTROL
 HU0718
 HU0718  NGVD 29 (??/??/??)   15.71   (m)           51.5    (f) RESET       3  
 HU0718  NGVD 29 (06/12/91)   15.715  (m)           51.56   (f) ADJUSTED    2 1
 HU0718
 HU0718.Superseded values are not recommended for survey control.
 HU0718
 HU0718.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0718.See file dsdata.pdf to determine how the superseded data were derived.
 HU0718
 HU0718_MARKER: DB = BENCH MARK DISK
 HU0718_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0718_STAMPING: G 58 RESET 1963
 HU0718_MARK LOGO: CGS
 HU0718_PROJECTION: FLUSH
 HU0718_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0718+STABILITY: SURFACE MOTION
 HU0718_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0718+SATELLITE: SATELLITE OBSERVATIONS - February 23, 1990
 HU0718
 HU0718  HISTORY     - Date     Condition        Report By
 HU0718  HISTORY     - 1963     MONUMENTED       MDSRC
 HU0718  HISTORY     - 19900223 GOOD             NGS
 HU0718
 HU0718                          STATION DESCRIPTION
 HU0718
 HU0718'DESCRIBED BY MD STATE ROADS COMM 1963
 HU0718'7.4 MI SE FROM SALISBURY.
 HU0718'6.4 MILES SOUTH ALONG MD. RTE. 12 TO SPEAREN HATCHERY ROAD ON THE
 HU0718'LEFT FROM THE STATION AT (MAIN STREET AND MD. RTE. 12 SNOW HILL
 HU0718'ROAD) IN SALISBURY, THENCE TURN LEFT 0.95 MILE EAST ALONG SPEAREN
 HU0718'HATCHERY ROAD TO A FARM LANE AND THE STATION ON THE LEFT AS
 HU0718'DESCRIBED, 1.0 MILE EAST OF THE NASSAWANGO CHURCH THAT IS ON MD.
 HU0718'RTE. 12, 43.0 FEET NORTH OF THE CENTERLINE OF SPEAREN HATCHERY
 HU0718'ROAD (A DIRT ROAD), 2.0 FEET NORTH OF POLE 13/110, 9.10 FEET EAST
 HU0718'OF THE CENTERLINE OF A DRIVEWAY, AND SET IN A CONCRETE POST FLUSH
 HU0718'WITH THE GROUND.
 HU0718
 HU0718                          STATION RECOVERY (1990)
 HU0718
 HU0718'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0718'7.7 KM (4.78 MI) SOUTHEASTERLY ALONG STATE HIGHWAY 12 FROM THE
 HU0718'JUNCTION OF JOHNSON ROAD IN SALISBURY, THENCE 1.6 KM (0.99 MI)
 HU0718'EASTERLY ALONG SPEARIN ROAD, 13.1 M (42.98 FT) NORTH OF THE CENTER OF
 HU0718'THE ROAD, 2.8 M (9.19 FT) EAST OF THE CENTER OF A DRIVEWAY, 0.6 M
 HU0718'(1.97 FT) NORTH OF UTILITY POLE NUMBER 94388 90530, 0.3 M (0.98 FT)
 HU0718'ABOVE THE LEVEL OF THE ROAD, AND IN A CONCRETE MONUMENT THAT IS FLUSH
 HU0718'WITH THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0478 ***********************************************************************
 HV0478  DESIGNATION -  G 59
 HV0478  PID         -  HV0478
 HV0478  STATE/COUNTY-  MD/DORCHESTER
 HV0478  COUNTRY     -  US
 HV0478  USGS QUAD   -  WINGATE (2016)
 HV0478
 HV0478                         *CURRENT SURVEY CONTROL
 HV0478  ______________________________________________________________________
 HV0478* NAD 83(1986) POSITION- 38 16 55.     (N) 076 04 56.     (W)   SCALED
 HV0478* NAVD 88 ORTHO HEIGHT -     0.245 (meters)        0.80  (feet) ADJUSTED
 HV0478  ______________________________________________________________________
 HV0478  GEOID HEIGHT    -        -35.466 (meters)                     GEOID18
 HV0478  DYNAMIC HEIGHT  -          0.245 (meters)        0.80  (feet) COMP
 HV0478  MODELED GRAVITY -    979,995.4   (mgal)                       NAVD 88
 HV0478
 HV0478  VERT ORDER      -  SECOND    CLASS 0
 HV0478
 HV0478.The horizontal coordinates were scaled from a map and have
 HV0478.an estimated accuracy of +/- 6 seconds.
 HV0478
 HV0478.The orthometric height was determined by differential leveling and
 HV0478.adjusted by the NATIONAL GEODETIC SURVEY
 HV0478.in June 1991.
 HV0478
 HV0478.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0478.GEOID18 height accuracy estimate available here.
 HV0478
 HV0478.Click photographs - Photos may exist for this station.
 HV0478
 HV0478.The dynamic height is computed by dividing the NAVD 88
 HV0478.geopotential number by the normal gravity value computed on the
 HV0478.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0478.degrees latitude (g = 980.6199 gals.).
 HV0478
 HV0478.The modeled gravity was interpolated from observed gravity values.
 HV0478
 HV0478;                    North         East    Units  Estimated Accuracy
 HV0478;SPC MD       -    68,700.      480,300.      MT  (+/- 180 meters Scaled)
 HV0478
 HV0478_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH053376(NAD 83)
 HV0478
 HV0478                          SUPERSEDED SURVEY CONTROL
 HV0478
 HV0478  NGVD 29 (11/26/84)    0.470  (m)            1.54   (f) ADJUSTED    2 0
 HV0478
 HV0478.Superseded values are not recommended for survey control.
 HV0478
 HV0478.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0478.See file dsdata.pdf to determine how the superseded data were derived.
 HV0478
 HV0478_MARKER: DB = BENCH MARK DISK
 HV0478_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0478_STAMPING: G 59 1942
 HV0478_MARK LOGO: CGS
 HV0478_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0478+STABILITY: SURFACE MOTION
 HV0478
 HV0478  HISTORY     - Date     Condition        Report By
 HV0478  HISTORY     - 1942     MONUMENTED       CGS
 HV0478
 HV0478                          STATION DESCRIPTION
 HV0478
 HV0478'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0478'2.4 MI S FROM WINGATE.
 HV0478'THIS MARK IS ABOUT 2.4 MILES SOUTH ALONG A GRAVEL RAOD FROM THE
 HV0478'COUNTY TRUST COMPANY BUILDING AT WINGATE, DORCHESTER COUNTY, AT
 HV0478'THE POWELEYS STORE, 58.5 FEET SOUTH OF THE SOUTHWEST CORNER OF
 HV0478'THE STORE, 48.5 FEET WEST OF THE CENTER LINE OF THE ROAD, AT THE
 HV0478'NORTHEAST CORNER OF A PASTURE, 1 FOOT NORTH OF THE NORTHEAST CORNER
 HV0478'FENCE POST, IN LINE WITH THE EAST PASTURE FENCE AND IS A STANDARD
 HV0478'DISK SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0651 ***********************************************************************
 HU0651  DESIGNATION -  G 60
 HU0651  PID         -  HU0651
 HU0651  STATE/COUNTY-  MD/DORCHESTER
 HU0651  COUNTRY     -  US
 HU0651  USGS QUAD   -  CHICAMACOMICO RIVER (2016)
 HU0651
 HU0651                         *CURRENT SURVEY CONTROL
 HU0651  ______________________________________________________________________
 HU0651* NAD 83(1986) POSITION- 38 24 05.     (N) 075 52 48.     (W)   SCALED
 HU0651* NAVD 88 ORTHO HEIGHT -     0.709 (meters)        2.33  (feet) ADJUSTED
 HU0651  ______________________________________________________________________
 HU0651  GEOID HEIGHT    -        -35.532 (meters)                     GEOID18
 HU0651  DYNAMIC HEIGHT  -          0.709 (meters)        2.33  (feet) COMP
 HU0651  MODELED GRAVITY -    980,009.1   (mgal)                       NAVD 88
 HU0651
 HU0651  VERT ORDER      -  SECOND    CLASS 0
 HU0651
 HU0651.The horizontal coordinates were scaled from a map and have
 HU0651.an estimated accuracy of +/- 6 seconds.
 HU0651
 HU0651.The orthometric height was determined by differential leveling and
 HU0651.adjusted by the NATIONAL GEODETIC SURVEY
 HU0651.in June 1991.
 HU0651
 HU0651.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0651.GEOID18 height accuracy estimate available here.
 HU0651
 HU0651.Click photographs - Photos may exist for this station.
 HU0651
 HU0651.The dynamic height is computed by dividing the NAVD 88
 HU0651.geopotential number by the normal gravity value computed on the
 HU0651.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0651.degrees latitude (g = 980.6199 gals.).
 HU0651
 HU0651.The modeled gravity was interpolated from observed gravity values.
 HU0651
 HU0651;                    North         East    Units  Estimated Accuracy
 HU0651;SPC MD       -    82,160.      497,830.      MT  (+/- 180 meters Scaled)
 HU0651
 HU0651_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH231507(NAD 83)
 HU0651
 HU0651                          SUPERSEDED SURVEY CONTROL
 HU0651
 HU0651  NGVD 29 (11/26/84)    0.948  (m)            3.11   (f) ADJUSTED    2 0
 HU0651
 HU0651.Superseded values are not recommended for survey control.
 HU0651
 HU0651.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0651.See file dsdata.pdf to determine how the superseded data were derived.
 HU0651
 HU0651_MARKER: DB = BENCH MARK DISK
 HU0651_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0651_STAMPING: G 60 1942
 HU0651_MARK LOGO: CGS
 HU0651_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0651+STABILITY: SURFACE MOTION
 HU0651
 HU0651  HISTORY     - Date     Condition        Report By
 HU0651  HISTORY     - 1942     MONUMENTED       CGS
 HU0651  HISTORY     - 1964     MARK NOT FOUND   CGS
 HU0651
 HU0651                          STATION DESCRIPTION
 HU0651
 HU0651'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0651'7.1 MI S FROM VIENNA.
 HU0651'THIS MARK IS ALONG A TAR AND GRAVEL ROAD ABOUT 7.1 MILES SOUTH
 HU0651'OF THE HIGH SCHOOL AT VIENNA, DORCHESTER COUNTY, AT THE SOUTHEAST
 HU0651'CORNER OF A SMALL UNPAINTED HOUSE, 49 FEET WEST OF THE CENTER LINE
 HU0651'OF THE ROAD, 4 FEET SOUTH OF THE SOUTHEAST CORNER OF THE HOUSE,
 HU0651'AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST ABOUT IN
 HU0651'LINE WITH THE EAST FACE OF THE HOUSE AND PROJECTING ABOUT 11
 HU0651'INCHES.
 HU0651
 HU0651                          STATION RECOVERY (1964)
 HU0651
 HU0651'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HU0651'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0729 ***********************************************************************
 HU0729  DESIGNATION -  G 61
 HU0729  PID         -  HU0729
 HU0729  STATE/COUNTY-  MD/WORCESTER
 HU0729  COUNTRY     -  US
 HU0729  USGS QUAD   -  SNOW HILL (2016)
 HU0729
 HU0729                         *CURRENT SURVEY CONTROL
 HU0729  ______________________________________________________________________
 HU0729* NAD 83(1986) POSITION- 38 11 01.9    (N) 075 29 42.1    (W)   HD_HELD2
 HU0729* NAVD 88 ORTHO HEIGHT -    10.661 (meters)       34.98  (feet) ADJUSTED
 HU0729  ______________________________________________________________________
 HU0729  GEOID HEIGHT    -        -36.169 (meters)                     GEOID18
 HU0729  DYNAMIC HEIGHT  -         10.654 (meters)       34.95  (feet) COMP
 HU0729  MODELED GRAVITY -    979,985.4   (mgal)                       NAVD 88
 HU0729
 HU0729  VERT ORDER      -  SECOND    CLASS 0
 HU0729
 HU0729.The horizontal coordinates were established by autonomous hand held GPS
 HU0729.observations and have an estimated accuracy of +/- 10 meters.
 HU0729
 HU0729.The orthometric height was determined by differential leveling and
 HU0729.adjusted by the NATIONAL GEODETIC SURVEY
 HU0729.in June 1991.
 HU0729
 HU0729.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0729.GEOID18 height accuracy estimate available here.
 HU0729
 HU0729.Click photographs - Photos may exist for this station.
 HU0729
 HU0729.The dynamic height is computed by dividing the NAVD 88
 HU0729.geopotential number by the normal gravity value computed on the
 HU0729.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0729.degrees latitude (g = 980.6199 gals.).
 HU0729
 HU0729.The modeled gravity was interpolated from observed gravity values.
 HU0729
 HU0729;                    North         East    Units  Estimated Accuracy
 HU0729;SPC MD       -    58,498.      531,852.      MT  (+/- 10 meters HH2 GPS)
 HU0729
 HU0729_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5664626330(NAD 83)
 HU0729
 HU0729                          SUPERSEDED SURVEY CONTROL
 HU0729
 HU0729  NGVD 29 (11/26/84)   10.906  (m)           35.78   (f) ADJUSTED    2 0
 HU0729
 HU0729.Superseded values are not recommended for survey control.
 HU0729
 HU0729.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0729.See file dsdata.pdf to determine how the superseded data were derived.
 HU0729
 HU0729_MARKER: DB = BENCH MARK DISK
 HU0729_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0729_STAMPING: G 61 1942
 HU0729_MARK LOGO: CGS
 HU0729_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0729_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0729+STABILITY: SURFACE MOTION
 HU0729_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0729+SATELLITE: SATELLITE OBSERVATIONS - October 08, 2006
 HU0729
 HU0729  HISTORY     - Date     Condition        Report By
 HU0729  HISTORY     - 1942     MONUMENTED       CGS
 HU0729  HISTORY     - 1962     GOOD             CGS
 HU0729  HISTORY     - 20061008 GOOD             USPSQD
 HU0729
 HU0729                          STATION DESCRIPTION
 HU0729
 HU0729'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0729'6.7 MI W FROM SNOW HILL.
 HU0729'2.8 MILES NORTHWEST ALONG STATE HIGHWAY 12 FROM THE DRAWBRIDGE
 HU0729'OVER POCOMOKE RIVER AT SNOW HILL, WORCESTER COUNTY, THENCE ABOUT
 HU0729'3.9 MILES WEST ALONG A DIRT ROAD, IN A WOODED AREA, 24 FEET NORTH
 HU0729'OF THE CENTER LINE OF THE ROAD, 23 FEET NORTHEAST OF A BLAZED
 HU0729'13-INCH OAK TREE, 1.5 FEET SOUTHWEST OF A WOODEN WITNESS POST,
 HU0729'AND ABOUT 3.5 FEET HIGHER THAN THE ROAD.  A STANDARD DISK,
 HU0729'STAMPED G 61 1942 AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 HU0729'ABOUT 3 INCHES ABOVE GROUND.  NOTE-- MARK IS 30 FEET NORTH OF THE
 HU0729'CENTER LINE OF A BLACKTOP ROAD.
 HU0729
 HU0729                          STATION RECOVERY (2006)
 HU0729
 HU0729'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HU0729'TAKE SAND ROAD OFF RED HOUSE ROAD.  CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0028 ***********************************************************************
 HV0028  DESIGNATION -  G 62 RESET
 HV0028  PID         -  HV0028
 HV0028  STATE/COUNTY-  MD/TALBOT
 HV0028  COUNTRY     -  US
 HV0028  USGS QUAD   -  TRAPPE (2016)
 HV0028
 HV0028                         *CURRENT SURVEY CONTROL
 HV0028  ______________________________________________________________________
 HV0028* NAD 83(1986) POSITION- 38 41 36.     (N) 076 05 52.     (W)   SCALED
 HV0028* NAVD 88 ORTHO HEIGHT -     4.00  (+/-2cm)       13.1   (feet) VERTCON3
 HV0028  ______________________________________________________________________
 HV0028  GEOID HEIGHT    -        -34.774 (meters)                     GEOID18
 HV0028  VERT ORDER      -  THIRD (See Below)
 HV0028
 HV0028.The horizontal coordinates were scaled from a map and have
 HV0028.an estimated accuracy of +/- 6 seconds.
 HV0028
 HV0028.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0028.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0028
 HV0028.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0028.GEOID18 height accuracy estimate available here.
 HV0028
 HV0028.The vertical order pertains to the NGVD 29 superseded value.
 HV0028
 HV0028.Click photographs - Photos may exist for this station.
 HV0028
 HV0028;                    North         East    Units  Estimated Accuracy
 HV0028;SPC MD       -   114,350.      478,490.      MT  (+/- 180 meters Scaled)
 HV0028
 HV0028_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH045833(NAD 83)
 HV0028
 HV0028                          SUPERSEDED SURVEY CONTROL
 HV0028
 HV0028  NGVD 29 (??/??/??)    4.24   (m)           13.9    (f) RESET       3  
 HV0028
 HV0028.Superseded values are not recommended for survey control.
 HV0028
 HV0028.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0028.See file dsdata.pdf to determine how the superseded data were derived.
 HV0028
 HV0028_MARKER: DB = BENCH MARK DISK
 HV0028_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0028_STAMPING: G 62 RESET 1969
 HV0028_MARK LOGO: CGS
 HV0028_PROJECTION: PROJECTING 15 CENTIMETERS
 HV0028_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0028_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0028+STABILITY: SURFACE MOTION
 HV0028_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0028+SATELLITE: SATELLITE OBSERVATIONS - September 13, 2000
 HV0028
 HV0028  HISTORY     - Date     Condition        Report By
 HV0028  HISTORY     - 1969     MONUMENTED       MDDT
 HV0028  HISTORY     - 20000913 POOR             MDSHA
 HV0028
 HV0028                          STATION DESCRIPTION
 HV0028
 HV0028'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1969
 HV0028'0.5 MI E FROM TRAPPE STATION.
 HV0028'ABOUT 0.5 MILE EAST ALONG THE HAMBLETON-OXFORD ROAD FROM TRAPPE
 HV0028'STATION, 55.13 FEET SOUTH OF THE CENTER LINE OF THE ROAD (TO
 HV0028'BE IMPROVED), 42 FEET EAST OF A SMALL STREAM, 2.6 FEET EAST OF
 HV0028'A TELEPHONE POLE, 2.4 FEET EAST OF A METAL WITNESS POST, SET
 HV0028'IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES AND ON THE
 HV0028'HIGHWAY RIGHT-OF-WAY.
 HV0028
 HV0028                          STATION RECOVERY (2000)
 HV0028
 HV0028'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV0028'THE MARK WAS RECOVERED IN POOR CONDITION LEANING TO THE NORTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0256 ***********************************************************************
 HV0256  DESIGNATION -  G 63
 HV0256  PID         -  HV0256
 HV0256  STATE/COUNTY-  MD/DORCHESTER
 HV0256  COUNTRY     -  US
 HV0256  USGS QUAD   -  CHURCH CREEK (2016)
 HV0256
 HV0256                         *CURRENT SURVEY CONTROL
 HV0256  ______________________________________________________________________
 HV0256* NAD 83(1986) POSITION- 38 36 00.     (N) 076 14 51.     (W)   SCALED
 HV0256* NAVD 88 ORTHO HEIGHT -     1.552 (meters)        5.09  (feet) ADJUSTED
 HV0256  ______________________________________________________________________
 HV0256  GEOID HEIGHT    -        -34.606 (meters)                     GEOID18
 HV0256  DYNAMIC HEIGHT  -          1.551 (meters)        5.09  (feet) COMP
 HV0256  MODELED GRAVITY -    980,027.4   (mgal)                       NAVD 88
 HV0256
 HV0256  VERT ORDER      -  SECOND    CLASS 0
 HV0256
 HV0256.The horizontal coordinates were scaled from a map and have
 HV0256.an estimated accuracy of +/- 6 seconds.
 HV0256
 HV0256.The orthometric height was determined by differential leveling and
 HV0256.adjusted by the NATIONAL GEODETIC SURVEY
 HV0256.in June 1991.
 HV0256
 HV0256.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0256.GEOID18 height accuracy estimate available here.
 HV0256
 HV0256.Click photographs - Photos may exist for this station.
 HV0256
 HV0256.The dynamic height is computed by dividing the NAVD 88
 HV0256.geopotential number by the normal gravity value computed on the
 HV0256.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0256.degrees latitude (g = 980.6199 gals.).
 HV0256
 HV0256.The modeled gravity was interpolated from observed gravity values.
 HV0256
 HV0256;                    North         East    Units  Estimated Accuracy
 HV0256;SPC MD       -   103,870.      465,550.      MT  (+/- 180 meters Scaled)
 HV0256
 HV0256_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH913731(NAD 83)
 HV0256
 HV0256                          SUPERSEDED SURVEY CONTROL
 HV0256
 HV0256  NGVD 29 (02/24/95)    1.784  (m)            5.85   (f) ADJUSTED    2 0
 HV0256  NGVD 29 (11/26/84)    1.790  (m)            5.87   (f) SUPERSEDED  2 0
 HV0256
 HV0256.Superseded values are not recommended for survey control.
 HV0256
 HV0256.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0256.See file dsdata.pdf to determine how the superseded data were derived.
 HV0256
 HV0256_MARKER: DB = BENCH MARK DISK
 HV0256_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0256_STAMPING: G 63 1942
 HV0256_MARK LOGO: CGS
 HV0256_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0256+STABILITY: SURFACE MOTION
 HV0256
 HV0256  HISTORY     - Date     Condition        Report By
 HV0256  HISTORY     - 1942     MONUMENTED       CGS
 HV0256  HISTORY     - 20060520 MARK NOT FOUND   USPSQD
 HV0256
 HV0256                          STATION DESCRIPTION
 HV0256
 HV0256'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0256'10 MI NW FROM CAMBRIDGE.
 HV0256'ALONG STATE HIGHWAY 343, 100 FEET WEST OF A WHITE BARN, 27 FEET
 HV0256'SOUTH OF THE CENTER OF THE HIGHWAY, 69 FEET EAST OF A TELEPHONE
 HV0256'POLE, 3 FEET WEST OF THE CORNER OF A WOVEN WIRE FENCE, AND SET
 HV0256'IN THE TOP OF A CONCRETE POST.  A STANDARD DISK.
 HV0256
 HV0256                          STATION RECOVERY (2006)
 HV0256
 HV0256'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV0256'ACONCRETE POST WAS FOUND WHICH HAD AN IRON ROD PROTRUDING FROM IT.  NO
 HV0256'DISK WAS FOUND.  THIS CLEARLY IS A PROPERTY CORNER, SOMEONE HAD PUT AN
 HV0256'ORANGE FLAG ON IT.  OTHER IDENTIFYING LOCATORS ARE SIMILAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1592 ***********************************************************************
 JU1592  DESIGNATION -  G 64
 JU1592  PID         -  JU1592
 JU1592  STATE/COUNTY-  MD/CECIL
 JU1592  COUNTRY     -  US
 JU1592  USGS QUAD   -  ELKTON (2016)
 JU1592
 JU1592                         *CURRENT SURVEY CONTROL
 JU1592  ______________________________________________________________________
 JU1592* NAD 83(1986) POSITION- 39 35 39.     (N) 075 51 50.     (W)   SCALED
 JU1592* NAVD 88 ORTHO HEIGHT -    32.744 (meters)      107.43  (feet) ADJUSTED
 JU1592  ______________________________________________________________________
 JU1592  GEOID HEIGHT    -        -33.181 (meters)                     GEOID18
 JU1592  DYNAMIC HEIGHT  -         32.728 (meters)      107.38  (feet) COMP
 JU1592  MODELED GRAVITY -    980,136.5   (mgal)                       NAVD 88
 JU1592
 JU1592  VERT ORDER      -  SECOND    CLASS 0
 JU1592
 JU1592.The horizontal coordinates were scaled from a map and have
 JU1592.an estimated accuracy of +/- 6 seconds.
 JU1592
 JU1592.The orthometric height was determined by differential leveling and
 JU1592.adjusted by the NATIONAL GEODETIC SURVEY
 JU1592.in June 1991.
 JU1592
 JU1592.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1592.GEOID18 height accuracy estimate available here.
 JU1592
 JU1592.Click photographs - Photos may exist for this station.
 JU1592
 JU1592.The dynamic height is computed by dividing the NAVD 88
 JU1592.geopotential number by the normal gravity value computed on the
 JU1592.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1592.degrees latitude (g = 980.6199 gals.).
 JU1592
 JU1592.The modeled gravity was interpolated from observed gravity values.
 JU1592
 JU1592;                    North         East    Units  Estimated Accuracy
 JU1592;SPC MD       -   214,580.      497,590.      MT  (+/- 180 meters Scaled)
 JU1592
 JU1592_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ258830(NAD 83)
 JU1592
 JU1592                          SUPERSEDED SURVEY CONTROL
 JU1592
 JU1592  NGVD 29 (11/26/84)   32.976  (m)          108.19   (f) ADJUSTED    2 0
 JU1592
 JU1592.Superseded values are not recommended for survey control.
 JU1592
 JU1592.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1592.See file dsdata.pdf to determine how the superseded data were derived.
 JU1592
 JU1592_MARKER: DB = BENCH MARK DISK
 JU1592_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1592_STAMPING: G 64 1942
 JU1592_MARK LOGO: CGS
 JU1592_PROJECTION: PROJECTING 13 CENTIMETERS
 JU1592_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1592+STABILITY: SURFACE MOTION
 JU1592_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1592+SATELLITE: SATELLITE OBSERVATIONS - September 18, 2025
 JU1592
 JU1592  HISTORY     - Date     Condition        Report By
 JU1592  HISTORY     - 1942     MONUMENTED       CGS
 JU1592  HISTORY     - 1964     GOOD             CGS
 JU1592  HISTORY     - 20030311 GOOD             USPSQD
 JU1592  HISTORY     - 20250918 GOOD             PROFLN
 JU1592
 JU1592                          STATION DESCRIPTION
 JU1592
 JU1592'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1592'2.5 MI SW FROM ELKTON.
 JU1592'0.35 MILE WEST ON THE MAIN STREET FROM THE POST OFFICE AT ELKTON,
 JU1592'THENCE 0.5 MILE SOUTH ON THE ELKTON LANDING ROAD, THENCE SOUTHWEST
 JU1592'ON A MACADAM ROAD 1.1 MILES, THENCE 0.45 MILE WESTERLY ON A
 JU1592'MACADAM ROAD.  0.1 MILE NORTH OF THE MARANATHA BAPTIST CHURCH, AND
 JU1592'AT A T-ROAD JUNCTION.  55 FEET EAST OF THE CENTERLINE OF A ROAD,
 JU1592'28 FEET NORTH OF THE CENTERLINE OF A ROAD, 8 FEET NORTHEAST OF A
 JU1592'40-INCH OAK TREE AND 1 FOOT SOUTH OF A METAL WITNESS POST AND
 JU1592'SIGN.  A STANDARD DISK IN THE TOP OF A CONCRETE POST, PROJECTING
 JU1592'ABOUT 3 INCHES.
 JU1592
 JU1592                          STATION RECOVERY (2003)
 JU1592
 JU1592'RECOVERY NOTE BY US POWER SQUADRON 2003 (RG)
 JU1592'WITNESS POST IS MISSING.
 JU1592
 JU1592                          STATION RECOVERY (2025)
 JU1592
 JU1592'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1592'IN THE NORTHEAST QUADRANT OF THE INTERSECTION.  THE BIG OAK TREE IS
 JU1592'GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0973 ***********************************************************************
 HU0973  DESIGNATION -  G 65
 HU0973  PID         -  HU0973
 HU0973  STATE/COUNTY-  MD/DORCHESTER
 HU0973  COUNTRY     -  US
 HU0973  USGS QUAD   -  RHODESDALE (2016)
 HU0973
 HU0973                         *CURRENT SURVEY CONTROL
 HU0973  ______________________________________________________________________
 HU0973* NAD 83(1986) POSITION- 38 34 58.4    (N) 075 47 21.9    (W)   HD_HELD2
 HU0973* NAVD 88 ORTHO HEIGHT -     2.419 (meters)        7.94  (feet) ADJUSTED
 HU0973  ______________________________________________________________________
 HU0973  GEOID HEIGHT    -        -35.434 (meters)                     GEOID18
 HU0973  DYNAMIC HEIGHT  -          2.418 (meters)        7.93  (feet) COMP
 HU0973  MODELED GRAVITY -    980,015.3   (mgal)                       NAVD 88
 HU0973
 HU0973  VERT ORDER      -  SECOND    CLASS 0
 HU0973
 HU0973.The horizontal coordinates were established by autonomous hand held GPS
 HU0973.observations and have an estimated accuracy of +/- 10 meters.
 HU0973
 HU0973.The orthometric height was determined by differential leveling and
 HU0973.adjusted by the NATIONAL GEODETIC SURVEY
 HU0973.in June 1991.
 HU0973
 HU0973.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0973.GEOID18 height accuracy estimate available here.
 HU0973
 HU0973.Click photographs - Photos may exist for this station.
 HU0973
 HU0973.The dynamic height is computed by dividing the NAVD 88
 HU0973.geopotential number by the normal gravity value computed on the
 HU0973.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0973.degrees latitude (g = 980.6199 gals.).
 HU0973
 HU0973.The modeled gravity was interpolated from observed gravity values.
 HU0973
 HU0973;                    North         East    Units  Estimated Accuracy
 HU0973;SPC MD       -   102,404.      505,474.      MT  (+/- 10 meters HH2 GPS)
 HU0973
 HU0973_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3124370786(NAD 83)
 HU0973
 HU0973                          SUPERSEDED SURVEY CONTROL
 HU0973
 HU0973  NGVD 29 (06/12/91)    2.664  (m)            8.74   (f) ADJUSTED    2 0
 HU0973  NGVD 29 (??/??/87)    2.664  (m)            8.74   (f) SUPERSEDED  2 0
 HU0973
 HU0973.Superseded values are not recommended for survey control.
 HU0973
 HU0973.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0973.See file dsdata.pdf to determine how the superseded data were derived.
 HU0973
 HU0973_MARKER: DB = BENCH MARK DISK
 HU0973_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0973_STAMPING: G 65 1942
 HU0973_MARK LOGO: CGS
 HU0973_PROJECTION: FLUSH
 HU0973_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0973+STABILITY: SURFACE MOTION
 HU0973_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0973+SATELLITE: SATELLITE OBSERVATIONS - January 11, 2014
 HU0973
 HU0973  HISTORY     - Date     Condition        Report By
 HU0973  HISTORY     - 1942     MONUMENTED       CGS
 HU0973  HISTORY     - 19890721 GOOD             MDSHA
 HU0973  HISTORY     - 20140111 GOOD             ARCSHE
 HU0973
 HU0973                          STATION DESCRIPTION
 HU0973
 HU0973'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0973'0.1 MI SW FROM ELDORADO.
 HU0973'0.1 MILE SOUTHWEST ALONG HIGHWAY 14 FROM THE T JUNCTION OF
 HU0973'HIGHWAY 14 AND 313 AT ELDORADO, DORCHESTER COUNTY, 19.9 FEET
 HU0973'NORTHWEST OF THE CENTER LINE OF HIGHWAY 14, 26.9 FEET EAST OF THE
 HU0973'EAST CORNER OF A 2-STORY WHITE HOUSE, SET IN THE EAST CORNER OF
 HU0973'THE YARD, LEVEL WITH THE HIGHWAY.
 HU0973
 HU0973                          STATION RECOVERY (1989)
 HU0973
 HU0973'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1989
 HU0973'RECOVERED IN GOOD CONDITION.
 HU0973
 HU0973                          STATION RECOVERY (2014)
 HU0973
 HU0973'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HU0973'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0903 ***********************************************************************
 HU0903  DESIGNATION -  G 66
 HU0903  PID         -  HU0903
 HU0903  STATE/COUNTY-  MD/DORCHESTER
 HU0903  COUNTRY     -  US
 HU0903  USGS QUAD   -  SEAFORD WEST (2016)
 HU0903
 HU0903                         *CURRENT SURVEY CONTROL
 HU0903  ______________________________________________________________________
 HU0903* NAD 83(1986) POSITION- 38 39 28.     (N) 075 43 47.     (W)   SCALED
 HU0903* NAVD 88 ORTHO HEIGHT -    13.163 (meters)       43.19  (feet) ADJUSTED
 HU0903  ______________________________________________________________________
 HU0903  GEOID HEIGHT    -        -35.437 (meters)                     GEOID18
 HU0903  DYNAMIC HEIGHT  -         13.154 (meters)       43.16  (feet) COMP
 HU0903  MODELED GRAVITY -    980,018.4   (mgal)                       NAVD 88
 HU0903
 HU0903  VERT ORDER      -  SECOND    CLASS 0
 HU0903
 HU0903.The horizontal coordinates were scaled from a map and have
 HU0903.an estimated accuracy of +/- 6 seconds.
 HU0903
 HU0903.The orthometric height was determined by differential leveling and
 HU0903.adjusted by the NATIONAL GEODETIC SURVEY
 HU0903.in June 1991.
 HU0903
 HU0903.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0903.GEOID18 height accuracy estimate available here.
 HU0903
 HU0903.Click photographs - Photos may exist for this station.
 HU0903
 HU0903.The dynamic height is computed by dividing the NAVD 88
 HU0903.geopotential number by the normal gravity value computed on the
 HU0903.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0903.degrees latitude (g = 980.6199 gals.).
 HU0903
 HU0903.The modeled gravity was interpolated from observed gravity values.
 HU0903
 HU0903;                    North         East    Units  Estimated Accuracy
 HU0903;SPC MD       -   110,790.      510,560.      MT  (+/- 180 meters Scaled)
 HU0903
 HU0903_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH365790(NAD 83)
 HU0903
 HU0903                          SUPERSEDED SURVEY CONTROL
 HU0903
 HU0903  NGVD 29 (11/26/84)   13.406  (m)           43.98   (f) ADJUSTED    2 0
 HU0903
 HU0903.Superseded values are not recommended for survey control.
 HU0903
 HU0903.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0903.See file dsdata.pdf to determine how the superseded data were derived.
 HU0903
 HU0903_MARKER: DB = BENCH MARK DISK
 HU0903_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0903_STAMPING: G 66 1942
 HU0903_MARK LOGO: CGS
 HU0903_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0903+STABILITY: SURFACE MOTION
 HU0903
 HU0903  HISTORY     - Date     Condition        Report By
 HU0903  HISTORY     - 1942     MONUMENTED       CGS
 HU0903  HISTORY     - 1965     GOOD             CGS
 HU0903  HISTORY     - 20130105 MARK NOT FOUND   DELCOS
 HU0903
 HU0903                          STATION DESCRIPTION
 HU0903
 HU0903'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0903'2.1 MI NW FROM RELIANCE.
 HU0903'2.05 MILES NORTHWEST ALONG HIGHWAY 577 FROM THE T JUNCTION OF
 HU0903'HIGHWAY 392 AND ROAD NUMBER 577 AT RELIANCE, DORCHESTER COUNTY,
 HU0903'31.0 FEET SOUTHWEST OF THE CENTER LINE OF ROAD NUMBER 577, 2.4
 HU0903'FEET NORTHWEST OF A POLE AND IN LINE WITH THE POLES, 26.9 FEET
 HU0903'NORTHEAST OF A ROW OF PEACH TREES, ABOUT 1.0 FOOT LOWER THAN ROAD,
 HU0903'NEAR A STANDARD REFERENCE POST.  NOTE-- THE PEACH TREES ARE GONE
 HU0903'AND THE ORCHARD IS NOW A CULTIVATED FIELD.  MARK IS 2.4 FEET
 HU0903'NORTHWEST OF POLE NUMBER 296 WHICH IS THE SECOND POLE NORTHWEST
 HU0903'OF A BLACKTOP ROAD LEADING SOUTHWEST.
 HU0903
 HU0903                          STATION RECOVERY (1965)
 HU0903
 HU0903'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0903'RECOVERED IN GOOD CONDITION.
 HU0903
 HU0903                          STATION RECOVERY (2013)
 HU0903
 HU0903'RECOVERY NOTE BY DELAWARE COASTAL PROGRAM 2013
 HU0903'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0891 ***********************************************************************
 HU0891  DESIGNATION -  G 67
 HU0891  PID         -  HU0891
 HU0891  STATE/COUNTY-  MD/CAROLINE
 HU0891  COUNTRY     -  US
 HU0891  USGS QUAD   -  HOBBS (2017)
 HU0891
 HU0891                         *CURRENT SURVEY CONTROL
 HU0891  ______________________________________________________________________
 HU0891* NAD 83(1986) POSITION- 38 50 14.     (N) 075 49 56.     (W)   SCALED
 HU0891* NAVD 88 ORTHO HEIGHT -    12.908 (meters)       42.35  (feet) ADJUSTED
 HU0891  ______________________________________________________________________
 HU0891  GEOID HEIGHT    -        -34.959 (meters)                     GEOID18
 HU0891  DYNAMIC HEIGHT  -         12.900 (meters)       42.32  (feet) COMP
 HU0891  MODELED GRAVITY -    980,035.7   (mgal)                       NAVD 88
 HU0891
 HU0891  VERT ORDER      -  SECOND    CLASS 0
 HU0891
 HU0891.The horizontal coordinates were scaled from a map and have
 HU0891.an estimated accuracy of +/- 6 seconds.
 HU0891
 HU0891.The orthometric height was determined by differential leveling and
 HU0891.adjusted by the NATIONAL GEODETIC SURVEY
 HU0891.in June 1991.
 HU0891
 HU0891.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0891.GEOID18 height accuracy estimate available here.
 HU0891
 HU0891.Click photographs - Photos may exist for this station.
 HU0891
 HU0891.The dynamic height is computed by dividing the NAVD 88
 HU0891.geopotential number by the normal gravity value computed on the
 HU0891.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0891.degrees latitude (g = 980.6199 gals.).
 HU0891
 HU0891.The modeled gravity was interpolated from observed gravity values.
 HU0891
 HU0891;                    North         East    Units  Estimated Accuracy
 HU0891;SPC MD       -   130,590.      501,380.      MT  (+/- 180 meters Scaled)
 HU0891
 HU0891_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH277990(NAD 83)
 HU0891
 HU0891                          SUPERSEDED SURVEY CONTROL
 HU0891
 HU0891  NGVD 29 (11/26/84)   13.148  (m)           43.14   (f) ADJUSTED    2 0
 HU0891
 HU0891.Superseded values are not recommended for survey control.
 HU0891
 HU0891.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0891.See file dsdata.pdf to determine how the superseded data were derived.
 HU0891
 HU0891_MARKER: DB = BENCH MARK DISK
 HU0891_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0891_STAMPING: G 67 1942
 HU0891_MARK LOGO: CGS
 HU0891_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0891+STABILITY: SURFACE MOTION
 HU0891
 HU0891  HISTORY     - Date     Condition        Report By
 HU0891  HISTORY     - 1942     MONUMENTED       CGS
 HU0891  HISTORY     - 1965     GOOD             CGS
 HU0891  HISTORY     - 19910103 MARK NOT FOUND   NGS
 HU0891
 HU0891                          STATION DESCRIPTION
 HU0891
 HU0891'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0891'3.7 MI S FROM DENTON.
 HU0891'3.7 MILES SOUTH ALONG HIGHWAY 313 FROM THE INTERSECTION OF HIGHWAY
 HU0891'313 AND HIGHWAY 404 AT DENTON, CAROLINE COUNTY, 31.0 FEET SOUTHEAST
 HU0891'OF THE CENTER OF THE HIGHWAY, AT A WYE JUNCTION OF HIGHWAY 313
 HU0891'AND A DIRT ROAD WHICH RUNS EAST FROM THE HIGHWAY, 38.0 FEET
 HU0891'SOUTHWEST OF THE CENTER OF A DIRT ROAD WHICH RUNS SOUTHEAST FROM
 HU0891'THE HIGHWAY TO A 2-STORY YELLOW HOUSE, SET IN THE CORNER OF A
 HU0891'PASTURE, 27.0 FEET WEST OF R.E.A. CO-OP POLE NUMBER 3-41, ABOUT
 HU0891'1.5 FEET LOWER THAN THE HIGHWAY, 2.0 FEET FROM A STANDARD REFERENCE
 HU0891'POST.
 HU0891
 HU0891                          STATION RECOVERY (1965)
 HU0891
 HU0891'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0891'RECOVERED IN GOOD CONDITION.
 HU0891
 HU0891                          STATION RECOVERY (1991)
 HU0891
 HU0891'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HU0891'THE POST WAS FOUND AT THE DESCRIBED LOCATION, BUT THE DISK WAS
 HU0891'MISSING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0823 ***********************************************************************
 HU0823  DESIGNATION -  G 68
 HU0823  PID         -  HU0823
 HU0823  STATE/COUNTY-  MD/CAROLINE
 HU0823  COUNTRY     -  US
 HU0823  USGS QUAD   -  RIDGELY (2017)
 HU0823
 HU0823                         *CURRENT SURVEY CONTROL
 HU0823  ______________________________________________________________________
 HU0823* NAD 83(1986) POSITION- 38 58 18.     (N) 075 52 43.     (W)   SCALED
 HU0823* NAVD 88 ORTHO HEIGHT -    19.521 (meters)       64.05  (feet) ADJUSTED
 HU0823  ______________________________________________________________________
 HU0823  GEOID HEIGHT    -        -34.494 (meters)                     GEOID18
 HU0823  DYNAMIC HEIGHT  -         19.510 (meters)       64.01  (feet) COMP
 HU0823  MODELED GRAVITY -    980,058.7   (mgal)                       NAVD 88
 HU0823
 HU0823  VERT ORDER      -  SECOND    CLASS 0
 HU0823
 HU0823.The horizontal coordinates were scaled from a map and have
 HU0823.an estimated accuracy of +/- 6 seconds.
 HU0823
 HU0823.The orthometric height was determined by differential leveling and
 HU0823.adjusted by the NATIONAL GEODETIC SURVEY
 HU0823.in June 1991.
 HU0823
 HU0823.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0823.GEOID18 height accuracy estimate available here.
 HU0823
 HU0823.Click photographs - Photos may exist for this station.
 HU0823
 HU0823.The dynamic height is computed by dividing the NAVD 88
 HU0823.geopotential number by the normal gravity value computed on the
 HU0823.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0823.degrees latitude (g = 980.6199 gals.).
 HU0823
 HU0823.The modeled gravity was interpolated from observed gravity values.
 HU0823
 HU0823;                    North         East    Units  Estimated Accuracy
 HU0823;SPC MD       -   145,460.      497,170.      MT  (+/- 180 meters Scaled)
 HU0823
 HU0823_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ238139(NAD 83)
 HU0823
 HU0823                          SUPERSEDED SURVEY CONTROL
 HU0823
 HU0823  NGVD 29 (11/26/84)   19.757  (m)           64.82   (f) ADJUSTED    2 0
 HU0823
 HU0823.Superseded values are not recommended for survey control.
 HU0823
 HU0823.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0823.See file dsdata.pdf to determine how the superseded data were derived.
 HU0823
 HU0823_MARKER: DB = BENCH MARK DISK
 HU0823_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0823_STAMPING: G 68 1942
 HU0823_MARK LOGO: CGS
 HU0823_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0823+STABILITY: SURFACE MOTION
 HU0823
 HU0823  HISTORY     - Date     Condition        Report By
 HU0823  HISTORY     - 1942     MONUMENTED       CGS
 HU0823  HISTORY     - 20050319 MARK NOT FOUND   USPSQD
 HU0823
 HU0823                          STATION DESCRIPTION
 HU0823
 HU0823'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0823'2.2 MI E FROM RIDGLEY.
 HU0823'THIS MARK IS ABOUT 0.1 MILE EAST AND ABOUT 2.05 MILES NORTH ALONG
 HU0823'HIGHWAY 312 FROM THE RAILROAD STATION AT RIDGLEY, CAROLINE
 HU0823'COUNTY, 23.0 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY,
 HU0823'21.2 FEET NORTH OF THE CENTER LINE OF A DIRT ROAD WHICH RUNS
 HU0823'NORTHWEST FROM THE HIGHWAY, 3.4 FEET NORTH WEST OF POLE NUMBER
 HU0823'42, 3.0 FEET SOUTHEAST OF A STANDARD REFERENCE POST.
 HU0823
 HU0823                          STATION RECOVERY (2005)
 HU0823
 HU0823'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HU0823'SEE HU0824  G68 RESET 1965.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0824 ***********************************************************************
 HU0824  DESIGNATION -  G 68 RESET
 HU0824  PID         -  HU0824
 HU0824  STATE/COUNTY-  MD/CAROLINE
 HU0824  COUNTRY     -  US
 HU0824  USGS QUAD   -  RIDGELY (2017)
 HU0824
 HU0824                         *CURRENT SURVEY CONTROL
 HU0824  ______________________________________________________________________
 HU0824* NAD 83(1986) POSITION- 38 58 18.     (N) 075 52 43.     (W)   SCALED
 HU0824* NAVD 88 ORTHO HEIGHT -    19.76  (meters)       64.8   (feet) RESET
 HU0824  ______________________________________________________________________
 HU0824  GEOID HEIGHT    -        -34.494 (meters)                     GEOID18
 HU0824  VERT ORDER      -  THIRD
 HU0824
 HU0824.The horizontal coordinates were scaled from a map and have
 HU0824.an estimated accuracy of +/- 6 seconds.
 HU0824
 HU0824.The orthometric height was computed from unverified reset data.
 HU0824
 HU0824.No vertical observational check was made to the station.
 HU0824
 HU0824.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0824.GEOID18 height accuracy estimate available here.
 HU0824
 HU0824.Click photographs - Photos may exist for this station.
 HU0824
 HU0824;                    North         East    Units  Estimated Accuracy
 HU0824;SPC MD       -   145,460.      497,170.      MT  (+/- 180 meters Scaled)
 HU0824
 HU0824_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ238139(NAD 83)
 HU0824
 HU0824                          SUPERSEDED SURVEY CONTROL
 HU0824
 HU0824  NGVD 29 (??/??/??)   20.00   (m)           65.6    (f) RESET       3  
 HU0824
 HU0824.Superseded values are not recommended for survey control.
 HU0824
 HU0824.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0824.See file dsdata.pdf to determine how the superseded data were derived.
 HU0824
 HU0824_MARKER: DB = BENCH MARK DISK
 HU0824_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0824_STAMPING: G 68 RESET 1965
 HU0824_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0824+STABILITY: SURFACE MOTION
 HU0824
 HU0824  HISTORY     - Date     Condition        Report By
 HU0824  HISTORY     - 1965     MONUMENTED       MDSRC
 HU0824  HISTORY     - 20050319 MARK NOT FOUND   USPSQD
 HU0824
 HU0824                          STATION DESCRIPTION
 HU0824
 HU0824'DESCRIBED BY MD STATE ROADS COMM 1965
 HU0824'2.1 MI N FROM RIDGLEY.
 HU0824'2.1 MILES NORTH OF THE PENNSYLVANIA RAILROAD CROSSING IN RIDGELY,
 HU0824'ALONG MARYLAND RTE. 312 ON THE RIGHT.  90.5 FEET EAST OF THE
 HU0824'CENTERLINE OF MARYLAND RTE. 312, 42.4 FEET NORTH OF THE
 HU0824'CENTERLINE OF THE FARM ENTRANCE, 28.3 FEET WEST OF THE NORTHWEST
 HU0824'CORNER OF THE 2 STORY FRAME DWELLING, 25.2 FEET WEST OF THE
 HU0824'SOUTHWEST CORNER, 37.8 FEET NORTHWEST OF A 24 IN MAPLE TREE, AND
 HU0824'14.5 FEET SOUTH OF A 36 IN CATALPHA TREE, AND 14.5 FEET NORTH OF
 HU0824'A 18 IN CATALPHA TREE, SET IN THE TOP OF A CONCRETE POST FLUSH
 HU0824'WITH THE GROUND.
 HU0824
 HU0824                          STATION RECOVERY (2005)
 HU0824
 HU0824'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HU0824'MEASUREMENTS REVEALED BROKEN CONCRETE POST WITH NO DISK.  CENTER STUD
 HU0824'REMAINS, 5 INCHES BELOW GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0359 ***********************************************************************
 JV0359  DESIGNATION -  G 69
 JV0359  PID         -  JV0359
 JV0359  STATE/COUNTY-  MD/KENT
 JV0359  COUNTRY     -  US
 JV0359  USGS QUAD   -  CHESTERTOWN (2017)
 JV0359
 JV0359                         *CURRENT SURVEY CONTROL
 JV0359  ______________________________________________________________________
 JV0359* NAD 83(1986) POSITION- 39 08 43.1    (N) 076 07 05.9    (W)   HD_HELD2
 JV0359* NAVD 88 ORTHO HEIGHT -     2.918 (meters)        9.57  (feet) ADJUSTED
 JV0359  ______________________________________________________________________
 JV0359  GEOID HEIGHT    -        -33.474 (meters)                     GEOID18
 JV0359  DYNAMIC HEIGHT  -          2.916 (meters)        9.57  (feet) COMP
 JV0359  MODELED GRAVITY -    980,104.9   (mgal)                       NAVD 88
 JV0359
 JV0359  VERT ORDER      -  FIRST     CLASS II
 JV0359
 JV0359.The horizontal coordinates were established by autonomous hand held GPS
 JV0359.observations and have an estimated accuracy of +/- 10 meters.
 JV0359
 JV0359.The orthometric height was determined by differential leveling and
 JV0359.adjusted by the NATIONAL GEODETIC SURVEY
 JV0359.in January 2023.
 JV0359
 JV0359.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0359.GEOID18 height accuracy estimate available here.
 JV0359
 JV0359.Click photographs - Photos may exist for this station.
 JV0359
 JV0359.The dynamic height is computed by dividing the NAVD 88
 JV0359.geopotential number by the normal gravity value computed on the
 JV0359.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0359.degrees latitude (g = 980.6199 gals.).
 JV0359
 JV0359.The modeled gravity was interpolated from observed gravity values.
 JV0359
 JV0359;                    North         East    Units  Estimated Accuracy
 JV0359;SPC MD       -   164,505.      476,217.      MT  (+/- 10 meters HH2 GPS)
 JV0359
 JV0359_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0336133496(NAD 83)
 JV0359
 JV0359                          SUPERSEDED SURVEY CONTROL
 JV0359
 JV0359  NAVD 88 (06/15/91)    2.916  (m)            9.57   (f) SUPERSEDED  1 2
 JV0359  NGVD 29 (11/26/84)    3.155  (m)           10.35   (f) ADJUSTED    1 2
 JV0359
 JV0359.Superseded values are not recommended for survey control.
 JV0359
 JV0359.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0359.See file dsdata.pdf to determine how the superseded data were derived.
 JV0359
 JV0359_MARKER: DB = BENCH MARK DISK
 JV0359_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0359_STAMPING: G 69 1942
 JV0359_MARK LOGO: CGS
 JV0359_PROJECTION: PROJECTING 3 CENTIMETERS
 JV0359_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0359+STABILITY: SURFACE MOTION
 JV0359_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0359+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV0359
 JV0359  HISTORY     - Date     Condition        Report By
 JV0359  HISTORY     - 1942     MONUMENTED       CGS
 JV0359  HISTORY     - 1971     GOOD             NGS
 JV0359  HISTORY     - 19910412 GOOD             USPSQD
 JV0359  HISTORY     - 20031021 GOOD             USPSQD
 JV0359  HISTORY     - 20140117 GOOD             ARCSHE
 JV0359  HISTORY     - 20250731 GOOD             PROFLN
 JV0359
 JV0359                          STATION DESCRIPTION
 JV0359
 JV0359'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0359'ABOUT 1.1 MILES SOUTHWEST ALONG STATE HIGHWAY 289 FROM THE BOND
 JV0359'CHAPEL METHODIST CHURCH AT POMONA, 0.3 MILE SOUTH OF THE JUNCTION
 JV0359'OF WALNUT POINT ROAD, AT THE JUNCTION OF A LANE LEADING WEST,
 JV0359'27 1/2 FEET NORTH OF THE CENTER LINE OF A LANE LEADING WEST, 20.7
 JV0359'FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 19.1 FEET
 JV0359'WEST OF A FENCE CORNER, 3 1/2 FEET SOUTH OF A TELEPHONE POLE,
 JV0359'1.8 FEET EAST OF A FENCE LINE, 1.8 FEET EAST OF A METAL WITNESS
 JV0359'POST, ABOUT LEVEL WITH THE HIGHWAY AND SET IN THE TOP OF A CONCRETE
 JV0359'POST FLUSH WITH THE GROUND.
 JV0359
 JV0359                          STATION RECOVERY (1991)
 JV0359
 JV0359'RECOVERY NOTE BY US POWER SQUADRON 1991 (GSW)
 JV0359'RECOVERED IN GOOD CONDITION.
 JV0359
 JV0359                          STATION RECOVERY (2003)
 JV0359
 JV0359'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 JV0359'REFERENCED TELEPHONE POLE HAS BEEN REMOVED.  MARK IS NOW 2 INCHES
 JV0359'ABOVE GROUND LEVEL.
 JV0359
 JV0359                          STATION RECOVERY (2014)
 JV0359
 JV0359'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0359'RECOVERED IN GOOD CONDITION.
 JV0359
 JV0359                          STATION RECOVERY (2025)
 JV0359
 JV0359'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0359'AT THE JUNCTION OF A LANE LEADING SOUTHWEST, 27.5 FT (8.4 M) NORTHWEST
 JV0359'OF THE LANE, 20.7 FT (6.3 M) SOUTHWEST OF THE HIGHWAY, 19.1 FT (5.8 M)
 JV0359'NORTHWEST OF A SPLIT RAIL FENCE CORNER, 3.5 FT (1.1 M) SOUTHEAST OF A
 JV0359'UTILITY POLE, 1.8 FT (0.5 M) NORTHEAST OF THE FENCE AND A METAL
 JV0359'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0275 ***********************************************************************
 HU0275  DESIGNATION -  G 7
 HU0275  PID         -  HU0275
 HU0275  STATE/COUNTY-  MD/WORCESTER
 HU0275  COUNTRY     -  US
 HU0275  USGS QUAD   -  OCEAN CITY (2016)
 HU0275
 HU0275                         *CURRENT SURVEY CONTROL
 HU0275  ______________________________________________________________________
 HU0275* NAD 83(1986) POSITION- 38 19 40.     (N) 075 07 05.     (W)   SCALED
 HU0275* NAVD 88 ORTHO HEIGHT -     3.018 (meters)        9.90  (feet) POSTED
 HU0275  ______________________________________________________________________
 HU0275  GEOID HEIGHT    -        -36.056 (meters)                     GEOID18
 HU0275  DYNAMIC HEIGHT  -          3.02  (meters)        9.9   (feet) COMP
 HU0275  MODELED GRAVITY -    980,007.3   (mgal)                       NAVD 88
 HU0275
 HU0275  VERT ORDER      -  * POSTED, SEE BELOW
 HU0275
 HU0275.The horizontal coordinates were scaled from a map and have
 HU0275.an estimated accuracy of +/- 6 seconds.
 HU0275
 HU0275.The orthometric height was determined by differential leveling
 HU0275.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HU0275
 HU0275.* This is a POSTED BENCH MARK height.
 HU0275
 HU0275.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0275.GEOID18 height accuracy estimate available here.
 HU0275
 HU0275.Click photographs - Photos may exist for this station.
 HU0275
 HU0275.The dynamic height is computed by dividing the NAVD 88
 HU0275.geopotential number by the normal gravity value computed on the
 HU0275.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0275.degrees latitude (g = 980.6199 gals.).
 HU0275
 HU0275.The modeled gravity was interpolated from observed gravity values.
 HU0275
 HU0275;                    North         East    Units  Estimated Accuracy
 HU0275;SPC MD       -    75,080.      564,550.      MT  (+/- 180 meters Scaled)
 HU0275
 HU0275_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH896421(NAD 83)
 HU0275
 HU0275                          SUPERSEDED SURVEY CONTROL
 HU0275
 HU0275  NGVD 29 (11/26/84)    3.262  (m)           10.70   (f) ADJUSTED    2 0
 HU0275
 HU0275.Superseded values are not recommended for survey control.
 HU0275
 HU0275.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0275.See file dsdata.pdf to determine how the superseded data were derived.
 HU0275
 HU0275_MARKER: DB = BENCH MARK DISK
 HU0275_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0275_STAMPING: G 7 1935
 HU0275_MARK LOGO: CGS
 HU0275_PROJECTION: PROJECTING 5 CENTIMETERS
 HU0275_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0275+STABILITY: SURFACE MOTION
 HU0275
 HU0275  HISTORY     - Date     Condition        Report By
 HU0275  HISTORY     - 1935     MONUMENTED       CGS
 HU0275  HISTORY     - 20021119 MARK NOT FOUND   USPSQD
 HU0275  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU0275
 HU0275                          STATION DESCRIPTION
 HU0275
 HU0275'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HU0275'1.7 MI W FROM OCEAN CITY.
 HU0275'ABOUT 1.7 MILES WEST ALONG THE BALTIMORE AND EASTERN
 HU0275'RAILROAD FROM THE STATION AT OCEAN CITY, WORCESTER COUNTY, AT A
 HU0275'DIRT-ROAD CROSSING, ABOUT 153 FEET SOUTH OF THE SOUTH RAIL, 15
 HU0275'FEET EAST OF THE CENTER LINE OF THE ROAD, 40 FEET WEST OF THE
 HU0275'SOUTHWEST CORNER OF THE S.M. HARMON HOUSE, AND IN THE YARD.  A
 HU0275'STANDARD DISK, STAMPED G 7 1935 AND SET IN THE TOP OF A CONCRETE
 HU0275'POST PROJECTING ABOUT 2 INCHES ABOVE GROUND.
 HU0275
 HU0275                          STATION RECOVERY (2002)
 HU0275
 HU0275'RECOVERY NOTE BY US POWER SQUADRON 2002 (CR)
 HU0275'RAILROAD TRACK DOES NOT EXIST.  THE LAT. AND LONG. OF THE MARK IS NEAR
 HU0275'THE INTERSECTION OF RT611 AND SUNSET AVE. WHICH IS RELATIVELY NEW
 HU0275'CONSTRUCTION.  S.M.HARMON HOUSE NO LONGER EXIST.
 HU0275
 HU0275                          STATION RECOVERY (2003)
 HU0275
 HU0275'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0275'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0276 ***********************************************************************
 HU0276  DESIGNATION -  G 7 RESET
 HU0276  PID         -  HU0276
 HU0276  STATE/COUNTY-  MD/WORCESTER
 HU0276  COUNTRY     -  US
 HU0276  USGS QUAD   -  OCEAN CITY (2016)
 HU0276
 HU0276                         *CURRENT SURVEY CONTROL
 HU0276  ______________________________________________________________________
 HU0276* NAD 83(1986) POSITION- 38 19 40.     (N) 075 07 06.     (W)   SCALED
 HU0276* NAVD 88 ORTHO HEIGHT -     3.147 (meters)       10.32  (feet) ADJUSTED
 HU0276  ______________________________________________________________________
 HU0276  GEOID HEIGHT    -        -36.056 (meters)                     GEOID18
 HU0276  DYNAMIC HEIGHT  -          3.145 (meters)       10.32  (feet) COMP
 HU0276  MODELED GRAVITY -    980,007.3   (mgal)                       NAVD 88
 HU0276
 HU0276  VERT ORDER      -  SECOND    CLASS 0
 HU0276
 HU0276.The horizontal coordinates were scaled from a map and have
 HU0276.an estimated accuracy of +/- 6 seconds.
 HU0276
 HU0276.The orthometric height was determined by differential leveling and
 HU0276.adjusted by the NATIONAL GEODETIC SURVEY
 HU0276.in June 1991.
 HU0276
 HU0276.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0276.GEOID18 height accuracy estimate available here.
 HU0276
 HU0276.Click photographs - Photos may exist for this station.
 HU0276
 HU0276.The dynamic height is computed by dividing the NAVD 88
 HU0276.geopotential number by the normal gravity value computed on the
 HU0276.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0276.degrees latitude (g = 980.6199 gals.).
 HU0276
 HU0276.The modeled gravity was interpolated from observed gravity values.
 HU0276
 HU0276;                    North         East    Units  Estimated Accuracy
 HU0276;SPC MD       -    75,080.      564,520.      MT  (+/- 180 meters Scaled)
 HU0276
 HU0276_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH896421(NAD 83)
 HU0276
 HU0276                          SUPERSEDED SURVEY CONTROL
 HU0276
 HU0276  NGVD 29 (11/26/84)    3.390  (m)           11.12   (f) ADJUSTED    2 0
 HU0276
 HU0276.Superseded values are not recommended for survey control.
 HU0276
 HU0276.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0276.See file dsdata.pdf to determine how the superseded data were derived.
 HU0276
 HU0276_MARKER: DB = BENCH MARK DISK
 HU0276_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0276_SP_SET: CULVERT
 HU0276_STAMPING: G 7 1935 RESET 1962
 HU0276_MARK LOGO: CGS
 HU0276_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0276
 HU0276  HISTORY     - Date     Condition        Report By
 HU0276  HISTORY     - 1962     MONUMENTED       CGS
 HU0276  HISTORY     - 1984     MARK NOT FOUND   MDDT
 HU0276
 HU0276                          STATION DESCRIPTION
 HU0276
 HU0276'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0276'AT WEST OCEAN CITY.
 HU0276'AT THE CROSSING OF STATE HIGHWAY 611 AND THE BALTIMORE AND EASTERN
 HU0276'RAILROAD, SET IN THE CENTER OF AN L SHAPED CONCRETE HEADWALL OF A
 HU0276'PIPE CULVERT UNDER A DRIVEWAY TO A FARMHOUSE, 102 FEET SOUTH OF
 HU0276'THE SOUTH RAIL OF THE RAILROAD, 19 FEET SOUTHEAST OF THE
 HU0276'CENTERLINE OF THE HIGHWAY, 12 FEET SOUTHWEST OF THE CENTERLINE OF
 HU0276'THE DRIVEWAY AND ABOUT LEVEL WITH THE HIGHWAY.
 HU0276
 HU0276                          STATION RECOVERY (1984)
 HU0276
 HU0276'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1984
 HU0276'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0347 ***********************************************************************
 JV0347  DESIGNATION -  G 70
 JV0347  PID         -  JV0347
 JV0347  STATE/COUNTY-  MD/KENT
 JV0347  COUNTRY     -  US
 JV0347  USGS QUAD   -  LANGFORD CREEK (2016)
 JV0347
 JV0347                         *CURRENT SURVEY CONTROL
 JV0347  ______________________________________________________________________
 JV0347* NAD 83(1986) POSITION- 39 03 21.     (N) 076 13 19.     (W)   SCALED
 JV0347* NAVD 88 ORTHO HEIGHT -     1.209 (meters)        3.97  (feet) ADJUSTED
 JV0347  ______________________________________________________________________
 JV0347  GEOID HEIGHT    -        -33.534 (meters)                     GEOID18
 JV0347  DYNAMIC HEIGHT  -          1.208 (meters)        3.96  (feet) COMP
 JV0347  MODELED GRAVITY -    980,094.7   (mgal)                       NAVD 88
 JV0347
 JV0347  VERT ORDER      -  SECOND    CLASS 0
 JV0347
 JV0347.The horizontal coordinates were scaled from a map and have
 JV0347.an estimated accuracy of +/- 6 seconds.
 JV0347
 JV0347.The orthometric height was determined by differential leveling and
 JV0347.adjusted by the NATIONAL GEODETIC SURVEY
 JV0347.in June 1991.
 JV0347
 JV0347.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0347.GEOID18 height accuracy estimate available here.
 JV0347
 JV0347.Click photographs - Photos may exist for this station.
 JV0347
 JV0347.The dynamic height is computed by dividing the NAVD 88
 JV0347.geopotential number by the normal gravity value computed on the
 JV0347.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0347.degrees latitude (g = 980.6199 gals.).
 JV0347
 JV0347.The modeled gravity was interpolated from observed gravity values.
 JV0347
 JV0347;                    North         East    Units  Estimated Accuracy
 JV0347;SPC MD       -   154,490.      467,340.      MT  (+/- 180 meters Scaled)
 JV0347
 JV0347_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ942236(NAD 83)
 JV0347
 JV0347                          SUPERSEDED SURVEY CONTROL
 JV0347
 JV0347  NGVD 29 (11/26/84)    1.457  (m)            4.78   (f) ADJUSTED    2 0
 JV0347
 JV0347.Superseded values are not recommended for survey control.
 JV0347
 JV0347.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0347.See file dsdata.pdf to determine how the superseded data were derived.
 JV0347
 JV0347_MARKER: DB = BENCH MARK DISK
 JV0347_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0347_SP_SET: BRIDGE
 JV0347_STAMPING: G 70 1942
 JV0347_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0347
 JV0347  HISTORY     - Date     Condition        Report By
 JV0347  HISTORY     - 1942     MONUMENTED       CGS
 JV0347  HISTORY     - 1964     GOOD             CGS
 JV0347  HISTORY     - 1971     GOOD             NGS
 JV0347  HISTORY     - 19901212 GOOD             USPSQD
 JV0347  HISTORY     - 19960824 GOOD             USPSQD
 JV0347  HISTORY     - 20140109 MARK NOT FOUND   ARCSHE
 JV0347
 JV0347                          STATION DESCRIPTION
 JV0347
 JV0347'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0347'5.8 MI S FROM ROCK HALL.
 JV0347'ABOUT 5.8 MILES SOUTH ALONG STATE HIGHWAY 445 FROM THE METHODIST
 JV0347'CHURCH AT ROCK HALL, AT THE BRIDGE BETWEEN THE NECK AND EASTERN
 JV0347'NECK ISLAND.  IN THE TOP OF THE NORTHEAST BRIDGE SEAT, A STANDARD
 JV0347'BENCH MARK DISK.
 JV0347
 JV0347                          STATION RECOVERY (1971)
 JV0347
 JV0347'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0347'RECOVERED IN GOOD CONDITION.
 JV0347
 JV0347                          STATION RECOVERY (1990)
 JV0347
 JV0347'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0347'RECOVERED IN GOOD CONDITION.
 JV0347
 JV0347                          STATION RECOVERY (1996)
 JV0347
 JV0347'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0347'RECOVERED IN GOOD CONDITION.
 JV0347
 JV0347                          STATION RECOVERY (2014)
 JV0347
 JV0347'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0347'THE BRIDGE SEAT MENTIONED IN THE DESCRIPTION HAS BEEN REPLACED.  AN
 JV0347'UNSTAMPED MDSHA DISK WAS FOUND IN THE APPROXIMATE LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0286 ***********************************************************************
 JV0286  DESIGNATION -  G 71
 JV0286  PID         -  JV0286
 JV0286  STATE/COUNTY-  MD/QUEEN ANNES
 JV0286  COUNTRY     -  US
 JV0286  USGS QUAD   -  CHESTERTOWN (2017)
 JV0286
 JV0286                         *CURRENT SURVEY CONTROL
 JV0286  ______________________________________________________________________
 JV0286* NAD 83(1986) POSITION- 39 11 34.     (N) 076 01 39.     (W)   SCALED
 JV0286* NAVD 88 ORTHO HEIGHT -    14.915 (meters)       48.93  (feet) ADJUSTED
 JV0286  ______________________________________________________________________
 JV0286  GEOID HEIGHT    -        -33.511 (meters)                     GEOID18
 JV0286  DYNAMIC HEIGHT  -         14.907 (meters)       48.91  (feet) COMP
 JV0286  MODELED GRAVITY -    980,107.4   (mgal)                       NAVD 88
 JV0286
 JV0286  VERT ORDER      -  SECOND    CLASS 0
 JV0286
 JV0286.The horizontal coordinates were scaled from a map and have
 JV0286.an estimated accuracy of +/- 6 seconds.
 JV0286
 JV0286.The orthometric height was determined by differential leveling and
 JV0286.adjusted by the NATIONAL GEODETIC SURVEY
 JV0286.in June 1991.
 JV0286
 JV0286.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0286.GEOID18 height accuracy estimate available here.
 JV0286
 JV0286.Click photographs - Photos may exist for this station.
 JV0286
 JV0286.The dynamic height is computed by dividing the NAVD 88
 JV0286.geopotential number by the normal gravity value computed on the
 JV0286.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0286.degrees latitude (g = 980.6199 gals.).
 JV0286
 JV0286.The modeled gravity was interpolated from observed gravity values.
 JV0286
 JV0286;                    North         East    Units  Estimated Accuracy
 JV0286;SPC MD       -   169,850.      484,010.      MT  (+/- 180 meters Scaled)
 JV0286
 JV0286_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ112386(NAD 83)
 JV0286
 JV0286                          SUPERSEDED SURVEY CONTROL
 JV0286
 JV0286  NGVD 29 (11/26/84)   15.151  (m)           49.71   (f) ADJUSTED    2 0
 JV0286
 JV0286.Superseded values are not recommended for survey control.
 JV0286
 JV0286.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0286.See file dsdata.pdf to determine how the superseded data were derived.
 JV0286
 JV0286_MARKER: DB = BENCH MARK DISK
 JV0286_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0286_STAMPING: G 71 1942
 JV0286_MARK LOGO: CGS
 JV0286_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0286+STABILITY: SURFACE MOTION
 JV0286
 JV0286  HISTORY     - Date     Condition        Report By
 JV0286  HISTORY     - 1942     MONUMENTED       CGS
 JV0286  HISTORY     - 20031021 MARK NOT FOUND   USPSQD
 JV0286
 JV0286                          STATION DESCRIPTION
 JV0286
 JV0286'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0286'1.9 MI SE FROM CHESTERTOWN.
 JV0286'ALONG HIGHWAY 213, ABOUT 1.9 MILE SOUTHEAST OF THE SOUTHEAST END
 JV0286'OF THE CHESTER RIVER BRIDGE AT CHESTERTOWN, ABOUT MID-WAY BETWEEN
 JV0286'MILEAGE MARKER NUMBER 30 AND 31, AT A FARM ROAD LEADING SOUTHWEST
 JV0286'ACROSS A HAY FIELD TO A GRAY FARM HOUSE, 52 FEET NORTHWEST OF
 JV0286'TELEPHONE POLE NUMBER 90, IN LINE WITH THE POLES, 1 FOOT
 JV0286'NORTHEAST OF THE WIRE FENCE ROW, 30 FEET SOUTHWEST OF THE CENTER
 JV0286'LINE OF THE HIGHWAY, 14 FEET SOUTHEAST OF THE CENTER LINE OF THE
 JV0286'FARM ROAD, A BENCH MARK DISK SET IN THE TOP OF A CONCRETE POST
 JV0286'PROJECTING 3-INCHES.
 JV0286
 JV0286                          STATION RECOVERY (2003)
 JV0286
 JV0286'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 JV0286'REFERENCED FARM ROAD AND HAY FIELD ARE NOW AN AUTOMOBILE DEALERSHIP.
 JV0286'HIGHWAY 213 HAS BEEN WIDENED AND THERE IS EVIDENCE OF EXTENSIVE DITCH
 JV0286'AND CULVERT CONSTRUCTION IN THE AREA.  REFERENCED FENCE DOES NOT
 JV0286'EXIST. POWER POLES HAVE BEEN REALIGNED AND RENUMBERED.
 JV0286'
 JV0286'NOTE JV0287 G-71 RESET REPORTED DESTROYED BY USCGS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1158 ***********************************************************************
 JU1158  DESIGNATION -  G 72
 JU1158  PID         -  JU1158
 JU1158  STATE/COUNTY-  MD/CECIL
 JU1158  COUNTRY     -  US
 JU1158  USGS QUAD   -  EARLEVILLE (2016)
 JU1158
 JU1158                         *CURRENT SURVEY CONTROL
 JU1158  ______________________________________________________________________
 JU1158* NAD 83(1986) POSITION- 39 22 46.     (N) 075 52 45.     (W)   SCALED
 JU1158* NAVD 88 ORTHO HEIGHT -    17.101 (meters)       56.11  (feet) ADJUSTED
 JU1158  ______________________________________________________________________
 JU1158  GEOID HEIGHT    -        -33.502 (meters)                     GEOID18
 JU1158  DYNAMIC HEIGHT  -         17.092 (meters)       56.08  (feet) COMP
 JU1158  MODELED GRAVITY -    980,110.1   (mgal)                       NAVD 88
 JU1158
 JU1158  VERT ORDER      -  SECOND    CLASS 0
 JU1158
 JU1158.The horizontal coordinates were scaled from a map and have
 JU1158.an estimated accuracy of +/- 6 seconds.
 JU1158
 JU1158.The orthometric height was determined by differential leveling and
 JU1158.adjusted by the NATIONAL GEODETIC SURVEY
 JU1158.in June 1991.
 JU1158
 JU1158.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1158.GEOID18 height accuracy estimate available here.
 JU1158
 JU1158.Click photographs - Photos may exist for this station.
 JU1158
 JU1158.The dynamic height is computed by dividing the NAVD 88
 JU1158.geopotential number by the normal gravity value computed on the
 JU1158.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1158.degrees latitude (g = 980.6199 gals.).
 JU1158
 JU1158.The modeled gravity was interpolated from observed gravity values.
 JU1158
 JU1158;                    North         East    Units  Estimated Accuracy
 JU1158;SPC MD       -   190,720.      496,570.      MT  (+/- 180 meters Scaled)
 JU1158
 JU1158_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ242592(NAD 83)
 JU1158
 JU1158                          SUPERSEDED SURVEY CONTROL
 JU1158
 JU1158  NGVD 29 (11/26/84)   17.343  (m)           56.90   (f) ADJUSTED    2 0
 JU1158
 JU1158.Superseded values are not recommended for survey control.
 JU1158
 JU1158.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1158.See file dsdata.pdf to determine how the superseded data were derived.
 JU1158
 JU1158_MARKER: DB = BENCH MARK DISK
 JU1158_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1158_STAMPING: G 72 1942
 JU1158_MARK LOGO: CGS
 JU1158_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1158+STABILITY: SURFACE MOTION
 JU1158
 JU1158  HISTORY     - Date     Condition        Report By
 JU1158  HISTORY     - 1942     MONUMENTED       CGS
 JU1158  HISTORY     - 1964     GOOD             CGS
 JU1158  HISTORY     - 1971     MARK NOT FOUND   NGS
 JU1158  HISTORY     - 1988     POOR             USPSQD
 JU1158  HISTORY     - 19881117 GOOD             USPSQD
 JU1158
 JU1158                          STATION DESCRIPTION
 JU1158
 JU1158'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1158'1.8 MI S FROM CECILTON.
 JU1158'1.8 MILES SOUTH ALONG HIGHWAY 213 FROM ITS JUNCTION WITH HIGHWAY
 JU1158'282 AT CECILTON, 45.0 FT. EAST OF CENTERLINE OF THE HIGHWAY,
 JU1158'18.5 FT. NORTH OF THE NORTH GATE POST OF ROAD LEADING TO THE
 JU1158'WHITEHALL FARM, 10.0 FEET WEST OF LARGE HEMLOCK TREE AND 4.0
 JU1158'FT. EAST OF THE ROW OF SHRUBERY.  A STANDARD DISK, STAMPED H 72
 JU1158'1942 AND SET IN TOP OF AN 8-INCH SQUARE CONCRETE POST ABOUT
 JU1158'2-INCHES BELOW SURFACE OF THE GROUND.NOTE-- THE DESCRIBED
 JU1158'LOCATION OF THE MARK IS COVERED WITH SHRUBBERY AND BUSHES.  THE
 JU1158'MARK IS ON PRIVATE PROPERTY AND THE SHRUBBERY WAS NOT CUT IN
 JU1158'ORDER TO LOOK FOR THE MARK.
 JU1158
 JU1158                          STATION RECOVERY (1971)
 JU1158
 JU1158'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JU1158'MARK NOT FOUND.
 JU1158
 JU1158                          STATION RECOVERY (1988)
 JU1158
 JU1158'RECOVERY NOTE BY US POWER SQUADRON 1988 (EWT)
 JU1158'MARK RECOVERED IN POOR CONDITION.
 JU1158
 JU1158                          STATION RECOVERY (1988)
 JU1158
 JU1158'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1158'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0512 ***********************************************************************
 JV0512  DESIGNATION -  G 74
 JV0512  PID         -  JV0512
 JV0512  STATE/COUNTY-  MD/BALTIMORE
 JV0512  COUNTRY     -  US
 JV0512  USGS QUAD   -  SPARROWS POINT (2016)
 JV0512
 JV0512                         *CURRENT SURVEY CONTROL
 JV0512  ______________________________________________________________________
 JV0512* NAD 83(1986) POSITION- 39 12 14.7    (N) 076 26 41.8    (W)   HD_HELD2
 JV0512* NAVD 88 ORTHO HEIGHT -     2.281 (meters)        7.48  (feet) ADJUSTED
 JV0512  ______________________________________________________________________
 JV0512  GEOID HEIGHT    -        -33.050 (meters)                     GEOID18
 JV0512  DYNAMIC HEIGHT  -          2.280 (meters)        7.48  (feet) COMP
 JV0512  MODELED GRAVITY -    980,107.6   (mgal)                       NAVD 88
 JV0512
 JV0512  VERT ORDER      -  THIRD
 JV0512
 JV0512.The horizontal coordinates were established by autonomous hand held GPS
 JV0512.observations and have an estimated accuracy of +/- 10 meters.
 JV0512
 JV0512.The orthometric height was determined by differential leveling and
 JV0512.adjusted by the NATIONAL GEODETIC SURVEY
 JV0512.in May 2006.
 JV0512
 JV0512.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0512.GEOID18 height accuracy estimate available here.
 JV0512
 JV0512.Click photographs - Photos may exist for this station.
 JV0512
 JV0512.The dynamic height is computed by dividing the NAVD 88
 JV0512.geopotential number by the normal gravity value computed on the
 JV0512.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0512.degrees latitude (g = 980.6199 gals.).
 JV0512
 JV0512.The modeled gravity was interpolated from observed gravity values.
 JV0512
 JV0512;                    North         East    Units  Estimated Accuracy
 JV0512;SPC MD       -   170,808.      447,942.      MT  (+/- 10 meters HH2 GPS)
 JV0512
 JV0512_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7523740418(NAD 83)
 JV0512
 JV0512                          SUPERSEDED SURVEY CONTROL
 JV0512
 JV0512  NAVD 88 (??/??/92)    2.281  (m)            7.48   (f) SUPERSEDED  3 0
 JV0512  NGVD 29 (11/26/84)    2.559  (m)            8.40   (f) ADJUSTED    2 0
 JV0512
 JV0512.Superseded values are not recommended for survey control.
 JV0512
 JV0512.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0512.See file dsdata.pdf to determine how the superseded data were derived.
 JV0512
 JV0512_MARKER: DB = BENCH MARK DISK
 JV0512_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0512_STAMPING: G 74 1942
 JV0512_MARK LOGO: CGS
 JV0512_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0512_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0512+STABILITY: SURFACE MOTION
 JV0512_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0512+SATELLITE: SATELLITE OBSERVATIONS - December 03, 2012
 JV0512
 JV0512  HISTORY     - Date     Condition        Report By
 JV0512  HISTORY     - 1942     MONUMENTED       CGS
 JV0512  HISTORY     - 19950131 GOOD             MCCRON
 JV0512  HISTORY     - 20090629 GOOD             MD-005
 JV0512  HISTORY     - 20121203 GOOD             USPSQD
 JV0512
 JV0512                          STATION DESCRIPTION
 JV0512
 JV0512'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0512'AT FT HOWARD.
 JV0512'AT FT. HOWARD, 0.2 MILE NORTH OF THE GATE AT THE ENTRANCE TO THE
 JV0512'FORT, 112.8 FEET NORTH OF THE NORTH RAIL OF THE TROLLY LINE AT
 JV0512'THE CENTER OF THE CROSSING, IN THE SOUTH END OF A TRIANGULAR
 JV0512'PLOT OF GRASS FORMED BY THE MAIN ROAD AND A DIRT ROADWAY TO A
 JV0512'TAVERN, 21 FEET WEST OF THE CENTER LINE OF THE MAIN ROAD, 10 FEET
 JV0512'SOUTHWEST OF A TREE WITH A DOUBLE TRUNK, AND IS A BENCH MARK DISK
 JV0512'SET IN THE TOP OF A CONCRETE POST PROJECTING 8 INCHES.  STAMPED
 JV0512'G 74 1942.
 JV0512
 JV0512                          STATION RECOVERY (1995)
 JV0512
 JV0512'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV0512'RECOVERED AS DESCRIBED.
 JV0512
 JV0512                          STATION RECOVERY (2009)
 JV0512
 JV0512'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 JV0512'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (ATA).
 JV0512'ADDITIONAL INFORMATION FOR THE STATION FOLLOWS - THE TROLLY TRACKS NO
 JV0512'LONGER EXIST AND THE STATION IS LOCATED 46.2 FEET NORTHEAST OF THE
 JV0512'CENTERLINE OF THE DRIVEWAY TO 9407 NORTH POINT ROAD. IT IS 42.3 FEET
 JV0512'SOUTHWESTERLY FROM THE UTILITY POLE NUMBERED 54432 AND 89.5 FEET
 JV0512'NORTHERLY FROM A UTILITY POLE WITH NO NUMBER.
 JV0512
 JV0512                          STATION RECOVERY (2012)
 JV0512
 JV0512'RECOVERY NOTE BY US POWER SQUADRON 2012
 JV0512'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0131 ***********************************************************************
 HV0131  DESIGNATION -  G 75
 HV0131  PID         -  HV0131
 HV0131  STATE/COUNTY-  MD/QUEEN ANNES
 HV0131  COUNTRY     -  US
 HV0131  USGS QUAD   -  QUEENSTOWN (2016)
 HV0131
 HV0131                         *CURRENT SURVEY CONTROL
 HV0131  ______________________________________________________________________
 HV0131* NAD 83(1986) POSITION- 38 56 46.     (N) 076 08 08.     (W)   SCALED
 HV0131* NAVD 88 ORTHO HEIGHT -    18.946 (meters)       62.16  (feet) ADJUSTED
 HV0131  ______________________________________________________________________
 HV0131  GEOID HEIGHT    -        -34.062 (meters)                     GEOID18
 HV0131  DYNAMIC HEIGHT  -         18.935 (meters)       62.12  (feet) COMP
 HV0131  MODELED GRAVITY -    980,067.4   (mgal)                       NAVD 88
 HV0131
 HV0131  VERT ORDER      -  SECOND    CLASS 0
 HV0131
 HV0131.The horizontal coordinates were scaled from a map and have
 HV0131.an estimated accuracy of +/- 6 seconds.
 HV0131
 HV0131.The orthometric height was determined by differential leveling and
 HV0131.adjusted by the NATIONAL GEODETIC SURVEY
 HV0131.in June 1991.
 HV0131
 HV0131.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0131.GEOID18 height accuracy estimate available here.
 HV0131
 HV0131.Click photographs - Photos may exist for this station.
 HV0131
 HV0131.The dynamic height is computed by dividing the NAVD 88
 HV0131.geopotential number by the normal gravity value computed on the
 HV0131.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0131.degrees latitude (g = 980.6199 gals.).
 HV0131
 HV0131.The modeled gravity was interpolated from observed gravity values.
 HV0131
 HV0131;                    North         East    Units  Estimated Accuracy
 HV0131;SPC MD       -   142,380.      474,940.      MT  (+/- 180 meters Scaled)
 HV0131
 HV0131_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ015114(NAD 83)
 HV0131
 HV0131                          SUPERSEDED SURVEY CONTROL
 HV0131
 HV0131  NGVD 29 (11/26/84)   19.156  (m)           62.85   (f) ADJUSTED    2 0
 HV0131
 HV0131.Superseded values are not recommended for survey control.
 HV0131
 HV0131.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0131.See file dsdata.pdf to determine how the superseded data were derived.
 HV0131
 HV0131_MARKER: DB = BENCH MARK DISK
 HV0131_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0131_STAMPING: G 75 1942
 HV0131_MARK LOGO: CGS
 HV0131_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0131+STABILITY: SURFACE MOTION
 HV0131
 HV0131  HISTORY     - Date     Condition        Report By
 HV0131  HISTORY     - 1942     MONUMENTED       CGS
 HV0131  HISTORY     - 1983     GOOD             LOCSUR
 HV0131  HISTORY     - 20030423 MARK NOT FOUND   USPSQD
 HV0131
 HV0131                          STATION DESCRIPTION
 HV0131
 HV0131'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0131'3 MI NW FROM WYE MILLS.
 HV0131'THIS MARK IS ABOUT 3.0 MILES NORTHWEST ON HIGHWAY 404 FROM WYE
 HV0131'MILLS POST OFFICE, AND ABOUT 2.0 MILES SOUTHWEST ON ROAD LEADING
 HV0131'TO WYE ISLAND, 32.6 FEET NORTHEAST OF CENTER LINE OF HIGHWAY,
 HV0131'62.8 FEET NORTHEAST FROM TELEPHONE POLE NUMBER 363, 55.0 FEET
 HV0131'SOUTH OF A POWER POLE, ABOUT 5-INCHES ABOVE THE GROUND, NEAR A WHITE
 HV0131'REFERENCE POST, AND SET IN THE TOP OF A CONCRETE POST.  A STANDARD
 HV0131'DISK.
 HV0131
 HV0131                          STATION RECOVERY (1983)
 HV0131
 HV0131'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1983
 HV0131'IT IS ABOUT 2 MILES SOUTHWEST ON CARMICHAEL RD FROM RTE 50.
 HV0131'TELEPHONE POLES HAVE NEW NUMBER SYSTEM AND ARE PROBABLY NEW.  NO SIGN
 HV0131'OF REFERENCE POST OR CONCRETE POST.
 HV0131
 HV0131                          STATION RECOVERY (2003)
 HV0131
 HV0131'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HV0131'ADJACENT FARM FIELD IS CULTIVATED TO WITHIN 30 FEET OF THE CENTERLINE
 HV0131'OF CARMICHAEL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0181 ***********************************************************************
 HV0181  DESIGNATION -  G 76
 HV0181  PID         -  HV0181
 HV0181  STATE/COUNTY-  MD/QUEEN ANNES
 HV0181  COUNTRY     -  US
 HV0181  USGS QUAD   -  KENT ISLAND (2016)
 HV0181
 HV0181                         *CURRENT SURVEY CONTROL
 HV0181  ______________________________________________________________________
 HV0181* NAD 83(1986) POSITION- 38 52 34.     (N) 076 21 04.     (W)   SCALED
 HV0181* NAVD 88 ORTHO HEIGHT -     2.394 (meters)        7.85  (feet) ADJUSTED
 HV0181  ______________________________________________________________________
 HV0181  GEOID HEIGHT    -        -33.780 (meters)                     GEOID18
 HV0181  DYNAMIC HEIGHT  -          2.392 (meters)        7.85  (feet) COMP
 HV0181  MODELED GRAVITY -    980,069.6   (mgal)                       NAVD 88
 HV0181
 HV0181  VERT ORDER      -  SECOND    CLASS 0
 HV0181
 HV0181.The horizontal coordinates were scaled from a map and have
 HV0181.an estimated accuracy of +/- 6 seconds.
 HV0181
 HV0181.The orthometric height was determined by differential leveling and
 HV0181.adjusted by the NATIONAL GEODETIC SURVEY
 HV0181.in June 1991.
 HV0181
 HV0181.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0181.GEOID18 height accuracy estimate available here.
 HV0181
 HV0181.Click photographs - Photos may exist for this station.
 HV0181
 HV0181.The dynamic height is computed by dividing the NAVD 88
 HV0181.geopotential number by the normal gravity value computed on the
 HV0181.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0181.degrees latitude (g = 980.6199 gals.).
 HV0181
 HV0181.The modeled gravity was interpolated from observed gravity values.
 HV0181
 HV0181;                    North         East    Units  Estimated Accuracy
 HV0181;SPC MD       -   134,450.      456,310.      MT  (+/- 180 meters Scaled)
 HV0181
 HV0181_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ827038(NAD 83)
 HV0181
 HV0181                          SUPERSEDED SURVEY CONTROL
 HV0181
 HV0181  NGVD 29 (11/26/84)    2.630  (m)            8.63   (f) ADJUSTED    2 0
 HV0181
 HV0181.Superseded values are not recommended for survey control.
 HV0181
 HV0181.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0181.See file dsdata.pdf to determine how the superseded data were derived.
 HV0181
 HV0181_MARKER: DB = BENCH MARK DISK
 HV0181_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0181_STAMPING: G 76 1942
 HV0181_MARK LOGO: CGS
 HV0181_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0181+STABILITY: SURFACE MOTION
 HV0181
 HV0181  HISTORY     - Date     Condition        Report By
 HV0181  HISTORY     - 1942     MONUMENTED       CGS
 HV0181  HISTORY     - 1945     GOOD             CGS
 HV0181  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 HV0181
 HV0181                          STATION DESCRIPTION
 HV0181
 HV0181'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0181'8 MI S FROM STEVENSVILLE.
 HV0181'THIS MARK IS ABOUT 8.0 MILES SOUTH OF THE WYE JUNCTION AT
 HV0181'STEVENSVILLE, AND ABOUT 5.5 MILES SOUTH FROM THE T JUNCTION
 HV0181'OF HIGHWAY 404 AND 33, SET ON THE EAST SIDE OF THE ROAD IN THE WOODS,
 HV0181'29.8 FEET EAST OF THE CENTER LINE OF THE ROAD, 52.5 FEET EAST OF A
 HV0181'FENCE ACROSS THE ROAD, 5.2 FEET NORTH WEST OF A 14-INCH PINE
 HV0181'TREE, NEAR A WHITE POST, AND SET IN THE TOP OF A CONCRETE
 HV0181'POST.  A STANDARD DISK.
 HV0181
 HV0181                          STATION RECOVERY (1945)
 HV0181
 HV0181'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945
 HV0181'RECOVERED IN GOOD CONDITION.
 HV0181
 HV0181                          STATION RECOVERY (1983)
 HV0181
 HV0181'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0181'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1338 ***********************************************************************
 JU1338  DESIGNATION -  G 77
 JU1338  PID         -  JU1338
 JU1338  STATE/COUNTY-  MD/QUEEN ANNES
 JU1338  COUNTRY     -  US
 JU1338  USGS QUAD   -  PRICE (2017)
 JU1338
 JU1338                         *CURRENT SURVEY CONTROL
 JU1338  ______________________________________________________________________
 JU1338* NAD 83(1986) POSITION- 39 00 33.     (N) 075 56 43.     (W)   SCALED
 JU1338* NAVD 88 ORTHO HEIGHT -    16.176 (meters)       53.07  (feet) ADJUSTED
 JU1338  ______________________________________________________________________
 JU1338  GEOID HEIGHT    -        -34.226 (meters)                     GEOID18
 JU1338  DYNAMIC HEIGHT  -         16.167 (meters)       53.04  (feet) COMP
 JU1338  MODELED GRAVITY -    980,068.0   (mgal)                       NAVD 88
 JU1338
 JU1338  VERT ORDER      -  SECOND    CLASS 0
 JU1338
 JU1338.The horizontal coordinates were scaled from a map and have
 JU1338.an estimated accuracy of +/- 6 seconds.
 JU1338
 JU1338.The orthometric height was determined by differential leveling and
 JU1338.adjusted by the NATIONAL GEODETIC SURVEY
 JU1338.in June 1991.
 JU1338
 JU1338.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1338.GEOID18 height accuracy estimate available here.
 JU1338
 JU1338.Click photographs - Photos may exist for this station.
 JU1338
 JU1338.The dynamic height is computed by dividing the NAVD 88
 JU1338.geopotential number by the normal gravity value computed on the
 JU1338.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1338.degrees latitude (g = 980.6199 gals.).
 JU1338
 JU1338.The modeled gravity was interpolated from observed gravity values.
 JU1338
 JU1338;                    North         East    Units  Estimated Accuracy
 JU1338;SPC MD       -   149,550.      491,350.      MT  (+/- 180 meters Scaled)
 JU1338
 JU1338_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ181182(NAD 83)
 JU1338
 JU1338                          SUPERSEDED SURVEY CONTROL
 JU1338
 JU1338  NGVD 29 (11/26/84)   16.412  (m)           53.85   (f) ADJUSTED    2 0
 JU1338
 JU1338.Superseded values are not recommended for survey control.
 JU1338
 JU1338.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1338.See file dsdata.pdf to determine how the superseded data were derived.
 JU1338
 JU1338_MARKER: DB = BENCH MARK DISK
 JU1338_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1338_STAMPING: G 77 1942
 JU1338_MARK LOGO: CGS
 JU1338_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1338+STABILITY: SURFACE MOTION
 JU1338
 JU1338  HISTORY     - Date     Condition        Report By
 JU1338  HISTORY     - 1942     MONUMENTED       CGS
 JU1338  HISTORY     - 1948     GOOD             CGS
 JU1338  HISTORY     - 20020308 MARK NOT FOUND   USPSQD
 JU1338
 JU1338                          STATION DESCRIPTION
 JU1338
 JU1338'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JU1338'0.8 MI E FROM RUTHSBURG.
 JU1338'0.8 MILE EAST ALONG A DIRT ROAD FROM THE INTERSECTION OF TWO
 JU1338'DIRT ROADS AT RUTHSBURG, QUEEN ANNES COUNTY, 24.6 FEET NORTH
 JU1338'OF THE CENTERLINE OF THE ROAD, 22 FEET NORTHEAST OF THE CENTERLINE
 JU1338'OF ANOTHER DIRT ROAD LEADING NORTH FROM THE MAIN ROAD, 3.2 FEET
 JU1338'NORTHEAST OF POLE 183, 2 FEET SOUTHEAST OF A WHITE WOODEN
 JU1338'WITNESS POST, AND 3 FEET ABOVE THE LEVEL OF THE ROAD.  A STANDARD
 JU1338'DISK, STAMPED G 77 1942 AND SET IN THE TOP OF A CONCRETE POST.
 JU1338
 JU1338                          STATION RECOVERY (1948)
 JU1338
 JU1338'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948
 JU1338'RECOVERED IN GOOD CONDITION.
 JU1338
 JU1338                          STATION RECOVERY (2002)
 JU1338
 JU1338'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU1338'REFERENCED DIRT ROAD AND DIRT ROAD INTERSECTION AT RUTHSBURG UPGRADED
 JU1338'AND PAVED (RTE 304 AND RUTHSBURG ROAD). POLE 183 DOES NOT EXIST.
 JU1338'WHITE WOODEN WITNESS POST DOES NOT EXIST. EVIDENCE OF EXTENSIVE
 JU1338'GRADING AND A NEW GALVANIZED UNDER A DIRT ROAD LEADING NORTH PLACE
 JU1338'STATION AT THE EDGE OF A DEEP DRAINAGE DITCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU2106 ***********************************************************************
 JU2106  DESIGNATION -  G 78
 JU2106  PID         -  JU2106
 JU2106  STATE/COUNTY-  MD/QUEEN ANNES
 JU2106  COUNTRY     -  US
 JU2106  USGS QUAD   -  SUDLERSVILLE (2017)
 JU2106
 JU2106                         *CURRENT SURVEY CONTROL
 JU2106  ______________________________________________________________________
 JU2106* NAD 83(1986) POSITION- 39 08 39.22   (N) 075 49 10.19   (W)   HD_HELD1
 JU2106* NAVD 88 ORTHO HEIGHT -    21.169 (meters)       69.45  (feet) ADJUSTED
 JU2106  ______________________________________________________________________
 JU2106  GEOID HEIGHT    -        -33.950 (meters)                     GEOID18
 JU2106  DYNAMIC HEIGHT  -         21.157 (meters)       69.41  (feet) COMP
 JU2106  MODELED GRAVITY -    980,091.7   (mgal)                       NAVD 88
 JU2106
 JU2106  VERT ORDER      -  SECOND    CLASS 0
 JU2106
 JU2106.The horizontal coordinates were determined by differentially corrected
 JU2106.hand held GPS observations or other comparable positioning techniques
 JU2106.and have an estimated accuracy of +/- 3 meters.
 JU2106
 JU2106.The orthometric height was determined by differential leveling and
 JU2106.adjusted by the NATIONAL GEODETIC SURVEY
 JU2106.in June 1991.
 JU2106
 JU2106.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU2106.GEOID18 height accuracy estimate available here.
 JU2106
 JU2106.Click photographs - Photos may exist for this station.
 JU2106
 JU2106.The dynamic height is computed by dividing the NAVD 88
 JU2106.geopotential number by the normal gravity value computed on the
 JU2106.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU2106.degrees latitude (g = 980.6199 gals.).
 JU2106
 JU2106.The modeled gravity was interpolated from observed gravity values.
 JU2106
 JU2106;                    North         East    Units  Estimated Accuracy
 JU2106;SPC MD       -   164,677.0     502,047.9     MT  (+/- 3 meters HH1 GPS) 
 JU2106
 JU2106_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2918233101(NAD 83)
 JU2106
 JU2106                          SUPERSEDED SURVEY CONTROL
 JU2106
 JU2106  NAD 27      -  39 08 38.81900(N)    075 49 11.43000(W) AD(       ) 3
 JU2106  NGVD 29              21.51   (m)           70.6    (f) LEVELING    3  
 JU2106  NGVD 29 (11/26/84)   21.406  (m)           70.23   (f) ADJUSTED    2 0
 JU2106
 JU2106.Superseded values are not recommended for survey control.
 JU2106
 JU2106.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU2106.See file dsdata.pdf to determine how the superseded data were derived.
 JU2106
 JU2106_MARKER: DB = BENCH MARK DISK
 JU2106_SETTING: 0 = UNSPECIFIED SETTING
 JU2106_STAMPING: G 78 1942
 JU2106_MARK LOGO: CGS
 JU2106
 JU2106  HISTORY     - Date     Condition        Report By
 JU2106  HISTORY     - 1942     MONUMENTED       CGS
 JU2106  HISTORY     - 20041026 MARK NOT FOUND   USPSQD
 JU2106
 JU2106                          STATION DESCRIPTION
 JU2106
 JU2106'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (CS)
 JU2106'THIS MARK IS ABOUT 3.1 MI. W ALONG U.S. HIGHWAY 302 FROM THE
 JU2106'T-JUNCTION OF U.S. HIGHWAYS 302 AND 454 AT TEMPLEVILLE, CAROLINE
 JU2106'COUNTY, 25.0 FT. N OF THE CENTERLINE OF U.S. HIGHWAY 302, 25.0
 JU2106'FT. E OF THE CENTERLINE OF A DIRT-ROAD CROSSING, IN THE SW CORNER
 JU2106'OF A FIELD, 73.0 FT. NW OF POWER POLE NO. 474, 63.0 FT. NW OF
 JU2106'HIGHWAY MARKER NO. 25, 1.0 FT. NE OF A FENCE POST, AND NEAR A
 JU2106'WHITE MARKER POST.  A STANDARD BRONZE DISK, SET IN THE TOP OF A
 JU2106'CONCRETE POST, AND STAMPED G 78 1942.
 JU2106
 JU2106                          STATION RECOVERY (2004)
 JU2106
 JU2106'RECOVERY NOTE BY US POWER SQUADRON 2004 (KN)
 JU2106'THE MARK PLOTS UNDER THE ENLARGED PAVED INTERSECTION OF HIGHWAY 302
 JU2106'AND BUSIC CHURCH ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1558 ***********************************************************************
 JV1558  DESIGNATION -  G 79
 JV1558  PID         -  JV1558
 JV1558  STATE/COUNTY-  MD/BALTIMORE
 JV1558  COUNTRY     -  US
 JV1558  USGS QUAD   -  PHOENIX (2016)
 JV1558
 JV1558                         *CURRENT SURVEY CONTROL
 JV1558  ______________________________________________________________________
 JV1558* NAD 83(1986) POSITION- 39 30 55.     (N) 076 35 02.     (W)   SCALED
 JV1558* NAVD 88 ORTHO HEIGHT -   136.153 (meters)      446.70  (feet) ADJUSTED
 JV1558  ______________________________________________________________________
 JV1558  GEOID HEIGHT    -        -32.449 (meters)                     GEOID18
 JV1558  DYNAMIC HEIGHT  -        136.082 (meters)      446.46  (feet) COMP
 JV1558  MODELED GRAVITY -    980,106.0   (mgal)                       NAVD 88
 JV1558
 JV1558  VERT ORDER      -  SECOND    CLASS 0
 JV1558
 JV1558.The horizontal coordinates were scaled from a map and have
 JV1558.an estimated accuracy of +/- 6 seconds.
 JV1558
 JV1558.The orthometric height was determined by differential leveling and
 JV1558.adjusted by the NATIONAL GEODETIC SURVEY
 JV1558.in June 1991.
 JV1558
 JV1558.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1558.GEOID18 height accuracy estimate available here.
 JV1558
 JV1558.Click photographs - Photos may exist for this station.
 JV1558
 JV1558.The dynamic height is computed by dividing the NAVD 88
 JV1558.geopotential number by the normal gravity value computed on the
 JV1558.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1558.degrees latitude (g = 980.6199 gals.).
 JV1558
 JV1558.The modeled gravity was interpolated from observed gravity values.
 JV1558
 JV1558;                    North         East    Units  Estimated Accuracy
 JV1558;SPC MD       -   205,290.      435,780.      MT  (+/- 180 meters Scaled)
 JV1558
 JV1558_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ638751(NAD 83)
 JV1558
 JV1558                          SUPERSEDED SURVEY CONTROL
 JV1558
 JV1558  NGVD 29 (11/26/84)  136.389  (m)          447.47   (f) ADJUSTED    2 0
 JV1558
 JV1558.Superseded values are not recommended for survey control.
 JV1558
 JV1558.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1558.See file dsdata.pdf to determine how the superseded data were derived.
 JV1558
 JV1558_MARKER: DB = BENCH MARK DISK
 JV1558_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1558_STAMPING: G 79 1942
 JV1558_MARK LOGO: CGS
 JV1558_PROJECTION: PROJECTING 5 CENTIMETERS
 JV1558_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1558_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1558+STABILITY: SURFACE MOTION
 JV1558_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1558+SATELLITE: SATELLITE OBSERVATIONS - January 04, 2021
 JV1558
 JV1558  HISTORY     - Date     Condition        Report By
 JV1558  HISTORY     - 1942     MONUMENTED       CGS
 JV1558  HISTORY     - 1965     GOOD             CGS
 JV1558  HISTORY     - 19960201 GOOD             MCCRON
 JV1558  HISTORY     - 20210104 GOOD             MD-005
 JV1558
 JV1558                          STATION DESCRIPTION
 JV1558
 JV1558'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1558'1.6 MI W FROM JACKSONVILLE.
 JV1558'THIS MARK IS ABOUT 1.55 MILES WEST ALONG ROAD NUMBER 145 FROM THE
 JV1558'INTERSECTION AT JACKSONVILLE, BALTIMORE COUNTY, 35.0 FEET
 JV1558'SOUTHEAST OF THE CENTER LINE OF THE ROAD, 30.0 FEET EAST OF A
 JV1558'12-INCH CORRUGATED IRON PIPE CULVERT, 86.0 FEET WEST OF THE WEST
 JV1558'CORNER OF A 2 STORY UNPAINTED HOUSE, 66.5 FEET SOUTHWEST OF A
 JV1558'20-INCH BEECH TREE, SET IN THE WEST CORNER OF THE YARD, 2.0 FEET
 JV1558'NORTHWEST OF A STANDARD REFERENCE POST.  STAMPED G 79 1942.
 JV1558
 JV1558                          STATION RECOVERY (1965)
 JV1558
 JV1558'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 JV1558'RECOVERED IN GOOD CONDITION.
 JV1558
 JV1558                          STATION RECOVERY (1996)
 JV1558
 JV1558'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 JV1558'RECOVERED AS DESCRIBED.
 JV1558
 JV1558                          STATION RECOVERY (2021)
 JV1558
 JV1558'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2021 (DFL)
 JV1558'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0589 ***********************************************************************
 HU0589  DESIGNATION -  G 8
 HU0589  PID         -  HU0589
 HU0589  STATE/COUNTY-  MD/SOMERSET
 HU0589  COUNTRY     -  US
 HU0589  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0589
 HU0589                         *CURRENT SURVEY CONTROL
 HU0589  ______________________________________________________________________
 HU0589* NAD 83(2011) POSITION- 38 08 08.80054(N) 075 42 01.85333(W)   ADJUSTED
 HU0589* NAD 83(2011) ELLIP HT-   -32.159 (meters)        (01/22/24)   ADJUSTED
 HU0589* NAD 83(2011) EPOCH   -  2010.00
 HU0589* NAVD 88 ORTHO HEIGHT -     3.926 (meters)       12.88  (feet) ADJUSTED
 HU0589  ______________________________________________________________________
 HU0589  GEOID HEIGHT    -        -36.076 (meters)                     GEOID18
 HU0589  NAD 83(2011) X  -  1,240,659.797 (meters)                     COMP
 HU0589  NAD 83(2011) Y  - -4,867,485.019 (meters)                     COMP
 HU0589  NAD 83(2011) Z  -  3,917,289.250 (meters)                     COMP
 HU0589  LAPLACE CORR    -         -1.95  (seconds)                    DEFLEC18
 HU0589  DYNAMIC HEIGHT  -          3.923 (meters)       12.87  (feet) COMP
 HU0589  MODELED GRAVITY -    979,981.6   (mgal)                       NAVD 88
 HU0589
 HU0589  VERT ORDER      -  FIRST     CLASS I
 HU0589
 HU0589  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0589  Standards:
 HU0589         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0589            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0589  -------------------------------------------------------------------
 HU0589  NETWORK    0.39   1.14           0.16   0.16   0.58     -0.00829718
 HU0589  -------------------------------------------------------------------
 HU0589  Click here for local accuracies and other accuracy information.
 HU0589
 HU0589.The horizontal coordinates were established by GPS observations
 HU0589.and adjusted by the MD DOT HIGHWAY ADMIN in January 2024.
 HU0589
 HU0589.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0589.been affixed to the stable North American tectonic plate. See 
 HU0589.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0589
 HU0589.The horizontal coordinates are valid at the epoch date displayed above
 HU0589.which is a decimal equivalence of Year/Month/Day.
 HU0589
 HU0589.The orthometric height was determined by differential leveling and
 HU0589.adjusted by the NATIONAL GEODETIC SURVEY
 HU0589.in June 1991.
 HU0589
 HU0589.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0589.GEOID18 height accuracy estimate available here.
 HU0589
 HU0589.Click photographs - Photos may exist for this station.
 HU0589
 HU0589.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0589
 HU0589.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0589
 HU0589.The ellipsoidal height was determined by GPS observations
 HU0589.and is referenced to NAD 83.
 HU0589
 HU0589.The dynamic height is computed by dividing the NAVD 88
 HU0589.geopotential number by the normal gravity value computed on the
 HU0589.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0589.degrees latitude (g = 980.6199 gals.).
 HU0589
 HU0589.The modeled gravity was interpolated from observed gravity values.
 HU0589
 HU0589. The following values were computed from the NAD 83(2011) position.
 HU0589
 HU0589;                    North         East     Units Scale Factor Converg.
 HU0589;SPC MD       -    52,884.699   513,926.090   MT  1.00003263   +0 48 56.2
 HU0589;SPC MD       -   173,505.88  1,686,105.85   sFT  1.00003263   +0 48 56.2
 HU0589;UTM  18      - 4,221,111.794   438,609.874   MT  0.99964641   -0 25 57.4
 HU0589
 HU0589!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0589!SPC MD       -   1.00000505  x   1.00003263  =   1.00003768
 HU0589!UTM  18      -   1.00000505  x   0.99964641  =   0.99965145
 HU0589
 HU0589_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3860921111(NAD 83)
 HU0589
 HU0589                          SUPERSEDED SURVEY CONTROL
 HU0589
 HU0589  NGVD 29 (11/26/84)    4.181  (m)           13.72   (f) ADJUSTED    1 1
 HU0589
 HU0589.Superseded values are not recommended for survey control.
 HU0589
 HU0589.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0589.See file dsdata.pdf to determine how the superseded data were derived.
 HU0589
 HU0589_MARKER: DB = BENCH MARK DISK
 HU0589_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0589_STAMPING: G 8 1935
 HU0589_MARK LOGO: CGS
 HU0589_PROJECTION: FLUSH
 HU0589_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0589+STABILITY: SURFACE MOTION
 HU0589_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0589+SATELLITE: SATELLITE OBSERVATIONS - February 26, 2020
 HU0589
 HU0589  HISTORY     - Date     Condition        Report By
 HU0589  HISTORY     - 1935     MONUMENTED       CGS
 HU0589  HISTORY     - 1963     GOOD             CGS
 HU0589  HISTORY     - 19901025 GOOD             NGS
 HU0589  HISTORY     - 20050312 GOOD             USPSQD
 HU0589  HISTORY     - 20200226 GOOD             MDSHA
 HU0589
 HU0589                          STATION DESCRIPTION
 HU0589
 HU0589'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0589'0.8 MI NE FROM WESTOVER.
 HU0589'0.8 MILE NORTHEAST ALONG STATE HIGHWAY 413 FROM THE PENNSYLVANIA
 HU0589'RAILROAD STATION AT WESTOVER, AT THE JUNCTION OF U.S. HIGHWAY 13,
 HU0589'299 FEET SOUTHEAST OF CENTER OF THE JUNCTION, 64.5 FEET EAST OF
 HU0589'CENTER LINE OF NORTH-BOUND LANE OF HIGHWAY 13, 81.5 FEET SOUTHEAST
 HU0589'OF CENTER OF CROSSING OF NORTH-BOUND LANE OF HIGHWAY 13 AND
 HU0589'RAILROAD, 4 FEET SOUTH OF POWER POLE SC 430, 1.5 FEET NORTH OF A
 HU0589'STEEL WITNESS POST, ABOUT LEVEL WITH HIGHWAY 13, AND SET IN THE TOP
 HU0589'OF A CONCRETE POST PROJECTING 2 INCHES.  NOTE-- MARK MAY ALSO BE
 HU0589'REACHED BY GOING 4.75 MILES SOUTH AND SOUTHWEST ALONG SOMERSET
 HU0589'AVENUE AND U.S. HIGHWAY 13 FROM THE JUNCTION OF STATE HIGHWAY
 HU0589'363 AT PRINCESS ANNE.
 HU0589
 HU0589                          STATION RECOVERY (1990)
 HU0589
 HU0589'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0589'8.0 KM (5.0 MI) SOUTHERLY ALONG U.S. HIGHWAY 13 FROM THE JUNCTION OF
 HU0589'STATE HIGHWAY 363 IN PRINCESS ANNE, 0.1 KM (0.1 MI) SOUTH OF THE
 HU0589'INTERSECTION OF STATE HIGHWAY 413, 21.0 M (68.9 FT) SOUTHWEST OF
 HU0589'UTILITY POLE NUMBER 43899 84812, 18.5 M (60.7 FT) EAST OF AND LEVEL
 HU0589'WITH THE CENTERLINE OF THE NORTHBOUND LANES OF THE HIGHWAY, 0.2 M
 HU0589'(0.7 FT) WEST OF A WITNESS POST, AND THE MONUMENT IS FLUSH WITH THE
 HU0589'GROUND SURFACE.
 HU0589
 HU0589                          STATION RECOVERY (2005)
 HU0589
 HU0589'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 HU0589'RECOVERED IN GOOD CONDITION.
 HU0589
 HU0589                          STATION RECOVERY (2020)
 HU0589
 HU0589'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (EBD)
 HU0589'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0229 ***********************************************************************
 JV0229  DESIGNATION -  G 80
 JV0229  PID         -  JV0229
 JV0229  STATE/COUNTY-  MD/HARFORD
 JV0229  COUNTRY     -  US
 JV0229  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0229
 JV0229                         *CURRENT SURVEY CONTROL
 JV0229  ______________________________________________________________________
 JV0229* NAD 83(1986) POSITION- 39 36 14.     (N) 076 28 41.     (W)   SCALED
 JV0229* NAVD 88 ORTHO HEIGHT -   195.270 (meters)      640.65  (feet) ADJUSTED
 JV0229  ______________________________________________________________________
 JV0229  GEOID HEIGHT    -        -32.524 (meters)                     GEOID18
 JV0229  DYNAMIC HEIGHT  -        195.170 (meters)      640.32  (feet) COMP
 JV0229  MODELED GRAVITY -    980,110.4   (mgal)                       NAVD 88
 JV0229
 JV0229  VERT ORDER      -  SECOND    CLASS 0
 JV0229
 JV0229.The horizontal coordinates were scaled from a map and have
 JV0229.an estimated accuracy of +/- 6 seconds.
 JV0229
 JV0229.The orthometric height was determined by differential leveling and
 JV0229.adjusted by the NATIONAL GEODETIC SURVEY
 JV0229.in June 1991.
 JV0229
 JV0229.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0229.GEOID18 height accuracy estimate available here.
 JV0229
 JV0229.Click photographs - Photos may exist for this station.
 JV0229
 JV0229.The dynamic height is computed by dividing the NAVD 88
 JV0229.geopotential number by the normal gravity value computed on the
 JV0229.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0229.degrees latitude (g = 980.6199 gals.).
 JV0229
 JV0229.The modeled gravity was interpolated from observed gravity values.
 JV0229
 JV0229;                    North         East    Units  Estimated Accuracy
 JV0229;SPC MD       -   215,180.      444,830.      MT  (+/- 180 meters Scaled)
 JV0229
 JV0229_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ731848(NAD 83)
 JV0229
 JV0229                          SUPERSEDED SURVEY CONTROL
 JV0229
 JV0229  NGVD 29 (11/26/84)  195.512  (m)          641.44   (f) ADJUSTED    2 0
 JV0229
 JV0229.Superseded values are not recommended for survey control.
 JV0229
 JV0229.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0229.See file dsdata.pdf to determine how the superseded data were derived.
 JV0229
 JV0229_MARKER: DB = BENCH MARK DISK
 JV0229_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0229_SP_SET: CULVERT
 JV0229_STAMPING: G 80 1942
 JV0229_MARK LOGO: CGS
 JV0229_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0229
 JV0229  HISTORY     - Date     Condition        Report By
 JV0229  HISTORY     - 1942     MONUMENTED       CGS
 JV0229  HISTORY     - 1960     GOOD             CGS
 JV0229  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0229  HISTORY     - 19891012 MARK NOT FOUND   NGS
 JV0229  HISTORY     - 20041010 MARK NOT FOUND   GEOCAC
 JV0229
 JV0229                          STATION DESCRIPTION
 JV0229
 JV0229'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0229'AT JARRETTSVILLE.
 JV0229'AT JARRETTSVILLE, 99 YARDS SOUTH-SOUTHWEST OF THE CENTER OF THE
 JV0229'INTERSECTION OF STATE HIGHWAYS 23 AND 165, 16 FEET EAST OF THE
 JV0229'CENTER LINE OF HIGHWAY 165, 63 FEET SOUTHWEST OF THE SOUTHWEST
 JV0229'CORNER OF LOIS BEAUTY SALON, IN TOP OF THE EAST CONCRETE HEAD WALL
 JV0229'OF CULVERT UNDER HIGHWAY 165, 3 1/2 FEET NORTH OF THE SOUTH END OF
 JV0229'THE HEAD WALL, AND ABOUT 1 FOOT ABOVE THE LEVEL OF HIGHWAY 165.
 JV0229
 JV0229                          STATION RECOVERY (1971)
 JV0229
 JV0229'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0229'MARK NOT FOUND.
 JV0229
 JV0229                          STATION RECOVERY (1989)
 JV0229
 JV0229'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0229'MARK NOT FOUND.
 JV0229
 JV0229                          STATION RECOVERY (2004)
 JV0229
 JV0229'RECOVERY NOTE BY GEOCACHING 2004 (MFL)
 JV0229'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1655 ***********************************************************************
 JV1655  DESIGNATION -  G 81
 JV1655  PID         -  JV1655
 JV1655  STATE/COUNTY-  MD/CARROLL
 JV1655  COUNTRY     -  US
 JV1655  USGS QUAD   -  MANCHESTER (2016)
 JV1655
 JV1655                         *CURRENT SURVEY CONTROL
 JV1655  ______________________________________________________________________
 JV1655* NAD 83(1986) POSITION- 39 42 05.     (N) 076 55 25.     (W)   SCALED
 JV1655* NAVD 88 ORTHO HEIGHT -   330.575 (meters)     1084.56  (feet) ADJUSTED
 JV1655  ______________________________________________________________________
 JV1655  GEOID HEIGHT    -        -32.515 (meters)                     GEOID18
 JV1655  DYNAMIC HEIGHT  -        330.405 (meters)     1084.00  (feet) COMP
 JV1655  MODELED GRAVITY -    980,102.0   (mgal)                       NAVD 88
 JV1655
 JV1655  VERT ORDER      -  SECOND    CLASS 0
 JV1655
 JV1655.The horizontal coordinates were scaled from a map and have
 JV1655.an estimated accuracy of +/- 6 seconds.
 JV1655
 JV1655.The orthometric height was determined by differential leveling and
 JV1655.adjusted by the NATIONAL GEODETIC SURVEY
 JV1655.in June 1991.
 JV1655
 JV1655.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1655.GEOID18 height accuracy estimate available here.
 JV1655
 JV1655.Click photographs - Photos may exist for this station.
 JV1655
 JV1655.The dynamic height is computed by dividing the NAVD 88
 JV1655.geopotential number by the normal gravity value computed on the
 JV1655.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1655.degrees latitude (g = 980.6199 gals.).
 JV1655
 JV1655.The modeled gravity was interpolated from observed gravity values.
 JV1655
 JV1655;                    North         East    Units  Estimated Accuracy
 JV1655;SPC MD       -   225,880.      406,550.      MT  (+/- 180 meters Scaled)
 JV1655
 JV1655_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ350963(NAD 83)
 JV1655
 JV1655                          SUPERSEDED SURVEY CONTROL
 JV1655
 JV1655  NGVD 29 (11/26/84)  330.779  (m)         1085.23   (f) ADJUSTED    2 0
 JV1655
 JV1655.Superseded values are not recommended for survey control.
 JV1655
 JV1655.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1655.See file dsdata.pdf to determine how the superseded data were derived.
 JV1655
 JV1655_MARKER: DB = BENCH MARK DISK
 JV1655_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1655_STAMPING: G 81 1942
 JV1655_MARK LOGO: CGS
 JV1655_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1655+STABILITY: SURFACE MOTION
 JV1655
 JV1655  HISTORY     - Date     Condition        Report By
 JV1655  HISTORY     - 1942     MONUMENTED       CGS
 JV1655  HISTORY     - 20031008 MARK NOT FOUND   PADT
 JV1655
 JV1655                          STATION DESCRIPTION
 JV1655
 JV1655'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1655'6.9 MI E FROM UNION MILLS.
 JV1655'THIS MARK IS ABOUT 6.9 MILES EAST OF THE POST OFFICE AT UNION
 JV1655'MILLS, CARROLL COUNTY, SET ON THE NORTH SIDE OF THE DEEP RUN ROAD,
 JV1655'SET IN THE SOUTHEAST EDGE OF THE WOODS, 18.0 FEET NORTH OF THE
 JV1655'CENTER LINE OF THE ROAD, 4.3 FEET SOUTHEAST OF A 20-INCH WALNUT
 JV1655'TREE, 14.3 FEET NORTHEAST OF A 8-INCH HICKORY TREE, NEAR A WHITE
 JV1655'REFERENCE POST.
 JV1655
 JV1655                          STATION RECOVERY (2003)
 JV1655
 JV1655'RECOVERY NOTE BY PA DEPT OF TRANSP 2003 (LJM)
 JV1655'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1656 ***********************************************************************
 JV1656  DESIGNATION -  G 81 RESET
 JV1656  PID         -  JV1656
 JV1656  STATE/COUNTY-  MD/CARROLL
 JV1656  COUNTRY     -  US
 JV1656  USGS QUAD   -  MANCHESTER (2016)
 JV1656
 JV1656                         *CURRENT SURVEY CONTROL
 JV1656  ______________________________________________________________________
 JV1656* NAD 83(1986) POSITION- 39 42 05.     (N) 076 55 25.     (W)   SCALED
 JV1656* NAVD 88 ORTHO HEIGHT -   331.068 (meters)     1086.18  (feet) ADJUSTED
 JV1656  ______________________________________________________________________
 JV1656  GEOID HEIGHT    -        -32.515 (meters)                     GEOID18
 JV1656  DYNAMIC HEIGHT  -        330.898 (meters)     1085.62  (feet) COMP
 JV1656  MODELED GRAVITY -    980,102.0   (mgal)                       NAVD 88
 JV1656
 JV1656  VERT ORDER      -  SECOND    CLASS 0
 JV1656
 JV1656.The horizontal coordinates were scaled from a map and have
 JV1656.an estimated accuracy of +/- 6 seconds.
 JV1656
 JV1656.The orthometric height was determined by differential leveling and
 JV1656.adjusted by the NATIONAL GEODETIC SURVEY
 JV1656.in June 1991.
 JV1656
 JV1656.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1656.GEOID18 height accuracy estimate available here.
 JV1656
 JV1656.Click photographs - Photos may exist for this station.
 JV1656
 JV1656.The dynamic height is computed by dividing the NAVD 88
 JV1656.geopotential number by the normal gravity value computed on the
 JV1656.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1656.degrees latitude (g = 980.6199 gals.).
 JV1656
 JV1656.The modeled gravity was interpolated from observed gravity values.
 JV1656
 JV1656;                    North         East    Units  Estimated Accuracy
 JV1656;SPC MD       -   225,880.      406,550.      MT  (+/- 180 meters Scaled)
 JV1656
 JV1656_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ350963(NAD 83)
 JV1656
 JV1656                          SUPERSEDED SURVEY CONTROL
 JV1656
 JV1656  NGVD 29 (11/26/84)  331.275  (m)         1086.86   (f) ADJUSTED    2 0
 JV1656
 JV1656.Superseded values are not recommended for survey control.
 JV1656
 JV1656.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1656.See file dsdata.pdf to determine how the superseded data were derived.
 JV1656
 JV1656_MARKER: DB = BENCH MARK DISK
 JV1656_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1656_STAMPING: G 81 RESET 1949
 JV1656_MARK LOGO: CGS
 JV1656_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1656+STABILITY: SURFACE MOTION
 JV1656
 JV1656  HISTORY     - Date     Condition        Report By
 JV1656  HISTORY     - 1949     MONUMENTED       CGS
 JV1656  HISTORY     - 1967     GOOD             CGS
 JV1656  HISTORY     - 20031008 MARK NOT FOUND   PADT
 JV1656
 JV1656                          STATION DESCRIPTION
 JV1656
 JV1656'DESCRIBED BY COAST AND GEODETIC SURVEY 1949
 JV1656'3.3 MI NW FROM MANCHESTER.
 JV1656'3.3 MILES NORTHWEST ALONG STATE HIGHWAY 30 FROM THE POST OFFICE
 JV1656'AT MANCHESTER, CARROLL COUNTY, THENCE 0.8 MILE SOUTHWEST ALONG
 JV1656'DEEP RUN ROAD, IN THE SOUTHWEST CORNER OF A FIELD AT THE EDGE OF
 JV1656'A WOODS, 91.6 FEET NORTHWEST ACROSS THE ROAD FROM THE NORTHWEST
 JV1656'CORNER OF THE PAUL C. WENTZ HOUSE, 87 FEET NORTHWEST OF G. AND E.
 JV1656'CO. POLE 86.281, 39 FEET WEST OF A LINE PROJECTED NORTHWARD FROM
 JV1656'THE WEST SIDE OF THE HOUSE, AND 30 FEET NORTH OF THE CENTER LINE
 JV1656'OF THE ROAD.  A STANDARD DISK, STAMPED G 81 RESET 1949 AND SET
 JV1656'IN THE TOP OF A CONCRETE POST.  NOTE-- THIS BENCH MARK WAS
 JV1656'ESTABLISHED AND ITS ELEVATION DETERMINED BY A PARTY FROM THIS
 JV1656'BUREAU IN JUNE 1949.
 JV1656
 JV1656                          STATION RECOVERY (1967)
 JV1656
 JV1656'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JV1656'RECOVERED IN GOOD CONDITION.
 JV1656
 JV1656                          STATION RECOVERY (2003)
 JV1656
 JV1656'RECOVERY NOTE BY PA DEPT OF TRANSP 2003 (LJM)
 JV1656'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1218 ***********************************************************************
 HV1218  DESIGNATION -  G 84
 HV1218  PID         -  HV1218
 HV1218  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1218  COUNTRY     -  US
 HV1218  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1218
 HV1218                         *CURRENT SURVEY CONTROL
 HV1218  ______________________________________________________________________
 HV1218* NAD 83(1986) POSITION- 38 53 09.     (N) 076 54 12.     (W)   SCALED
 HV1218* NAVD 88 ORTHO HEIGHT -    44.065 (meters)      144.57  (feet) ADJUSTED
 HV1218  ______________________________________________________________________
 HV1218  GEOID HEIGHT    -        -32.354 (meters)                     GEOID18
 HV1218  DYNAMIC HEIGHT  -         44.041 (meters)      144.49  (feet) COMP
 HV1218  MODELED GRAVITY -    980,079.2   (mgal)                       NAVD 88
 HV1218
 HV1218  VERT ORDER      -  SECOND    CLASS 0
 HV1218
 HV1218.The horizontal coordinates were scaled from a map and have
 HV1218.an estimated accuracy of +/- 6 seconds.
 HV1218
 HV1218.The orthometric height was determined by differential leveling and
 HV1218.adjusted by the NATIONAL GEODETIC SURVEY
 HV1218.in June 1991.
 HV1218
 HV1218.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1218.GEOID18 height accuracy estimate available here.
 HV1218
 HV1218.Click photographs - Photos may exist for this station.
 HV1218
 HV1218.The dynamic height is computed by dividing the NAVD 88
 HV1218.geopotential number by the normal gravity value computed on the
 HV1218.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1218.degrees latitude (g = 980.6199 gals.).
 HV1218
 HV1218.The modeled gravity was interpolated from observed gravity values.
 HV1218
 HV1218;                    North         East    Units  Estimated Accuracy
 HV1218;SPC MD       -   135,340.      408,390.      MT  (+/- 180 meters Scaled)
 HV1218
 HV1218_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ349058(NAD 83)
 HV1218
 HV1218                          SUPERSEDED SURVEY CONTROL
 HV1218
 HV1218  NGVD 29 (11/26/84)   44.320  (m)          145.41   (f) ADJUSTED    2 0
 HV1218
 HV1218.Superseded values are not recommended for survey control.
 HV1218
 HV1218.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1218.See file dsdata.pdf to determine how the superseded data were derived.
 HV1218
 HV1218_MARKER: DB = BENCH MARK DISK
 HV1218_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1218_SP_SET: SCHOOL BUILDING
 HV1218_STAMPING: G 84 1942
 HV1218_MARK LOGO: CGS
 HV1218_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1218
 HV1218  HISTORY     - Date     Condition        Report By
 HV1218  HISTORY     - 1942     MONUMENTED       CGS
 HV1218
 HV1218                          STATION DESCRIPTION
 HV1218
 HV1218'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1218'NEAR SEAT PLEASANT.
 HV1218'NEAR SEAT PLEASANT, PRINCE GEORGES COUNTY, IN THE SOUTHEAST PART
 HV1218'OF MARYLAND PARK, AT LYNDON HILL SCHOOL, IN THE NORTH BASEMENT
 HV1218'ENTRANCE AT THE FRONT OF THE BUILDING, JUST EAST OF THE DOOR,
 HV1218'1.2 FEET EAST OF THE EAST EDGE OF THE BRICK ARCHWAY, AND ABOUT
 HV1218'4.5 FEET HIGHER THAN THE SIDEWALK.  A STANDARD DISK, STAMPED
 HV1218'G 84 1942 AND SET VERTICALLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0532 ***********************************************************************
 JV0532  DESIGNATION -  G 85
 JV0532  PID         -  JV0532
 JV0532  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0532  COUNTRY     -  US
 JV0532  USGS QUAD   -  GIBSON ISLAND (2017)
 JV0532
 JV0532                         *CURRENT SURVEY CONTROL
 JV0532  ______________________________________________________________________
 JV0532* NAD 83(1986) POSITION- 39 00 53.     (N) 076 28 18.     (W)   SCALED
 JV0532* NAVD 88 ORTHO HEIGHT -     4.062 (meters)       13.33  (feet) ADJUSTED
 JV0532  ______________________________________________________________________
 JV0532  GEOID HEIGHT    -        -33.322 (meters)                     GEOID18
 JV0532  DYNAMIC HEIGHT  -          4.060 (meters)       13.32  (feet) COMP
 JV0532  MODELED GRAVITY -    980,075.1   (mgal)                       NAVD 88
 JV0532
 JV0532  VERT ORDER      -  FIRST     CLASS II
 JV0532
 JV0532.The horizontal coordinates were scaled from a map and have
 JV0532.an estimated accuracy of +/- 6 seconds.
 JV0532
 JV0532.The orthometric height was determined by differential leveling and
 JV0532.adjusted by the NATIONAL GEODETIC SURVEY
 JV0532.in June 1991.
 JV0532
 JV0532.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0532.GEOID18 height accuracy estimate available here.
 JV0532
 JV0532.Click photographs - Photos may exist for this station.
 JV0532
 JV0532.The dynamic height is computed by dividing the NAVD 88
 JV0532.geopotential number by the normal gravity value computed on the
 JV0532.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0532.degrees latitude (g = 980.6199 gals.).
 JV0532
 JV0532.The modeled gravity was interpolated from observed gravity values.
 JV0532
 JV0532;                    North         East    Units  Estimated Accuracy
 JV0532;SPC MD       -   149,770.      445,760.      MT  (+/- 180 meters Scaled)
 JV0532
 JV0532_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ725194(NAD 83)
 JV0532
 JV0532                          SUPERSEDED SURVEY CONTROL
 JV0532
 JV0532  NGVD 29 (11/26/84)    4.305  (m)           14.12   (f) ADJUSTED    1 2
 JV0532
 JV0532.Superseded values are not recommended for survey control.
 JV0532
 JV0532.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0532.See file dsdata.pdf to determine how the superseded data were derived.
 JV0532
 JV0532_MARKER: DB = BENCH MARK DISK
 JV0532_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0532_SP_SET: BRIDGE
 JV0532_STAMPING: G 85 1942
 JV0532_MARK LOGO: CGS
 JV0532_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0532
 JV0532  HISTORY     - Date     Condition        Report By
 JV0532  HISTORY     - 1942     MONUMENTED       CGS
 JV0532  HISTORY     - 1971     GOOD             NGS
 JV0532  HISTORY     - 20080716 MARK NOT FOUND   MDSHA
 JV0532
 JV0532                          STATION DESCRIPTION
 JV0532
 JV0532'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0532'0.6 MI SW FROM ST MARGARETS.
 JV0532'ABOUT 0.65 MILE SOUTHWEST ALONG STATE HIGHWAY 179 FROM THE ST.
 JV0532'MARGARETS EPISCOPAL CHURCH AND CEMETERY AT ST. MARGARETS, SET IN
 JV0532'THE TOP OF THE SOUTHEAST CONCRETE GUARDRAIL ON THE 65-FOOT HIGHWAY
 JV0532'BRIDGE OVER MILL CREEK, 12 FEET SOUTHEAST OF THE CENTER LINE
 JV0532'OF THE HIGHWAY, 1 FOOT SOUTHWEST OF THE NORTHEAST END OF THE
 JV0532'GUARDRAIL, AND ABOUT 2 1/2 FEET ABOVE THE LEVEL OF THE HIGHWAY.
 JV0532'NOTE-- THIS MARK IS ALSO ABOUT 0.5 MILE NORTH ALONG STATE HIGHWAY
 JV0532'450 FROM THE NORTHEAST END OF THE HIGHWAY BRIDGE OVER THE SEVERN
 JV0532'RIVER AT ANNAPOLIS, THENCE 1.25 MILES NORTHEAST ALONG STATE
 JV0532'HIGHWAY 179.
 JV0532
 JV0532                          STATION RECOVERY (2008)
 JV0532
 JV0532'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 JV0532'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1076 ***********************************************************************
 HV1076  DESIGNATION -  G 86
 HV1076  PID         -  HV1076
 HV1076  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1076  COUNTRY     -  US
 HV1076  USGS QUAD   -  PISCATAWAY (2016)
 HV1076
 HV1076                         *CURRENT SURVEY CONTROL
 HV1076  ______________________________________________________________________
 HV1076* NAD 83(1986) POSITION- 38 43 29.     (N) 076 57 07.     (W)   SCALED
 HV1076* NAVD 88 ORTHO HEIGHT -    70.569 (meters)      231.53  (feet) ADJUSTED
 HV1076  ______________________________________________________________________
 HV1076  GEOID HEIGHT    -        -32.543 (meters)                     GEOID18
 HV1076  DYNAMIC HEIGHT  -         70.530 (meters)      231.40  (feet) COMP
 HV1076  MODELED GRAVITY -    980,072.8   (mgal)                       NAVD 88
 HV1076
 HV1076  VERT ORDER      -  SECOND    CLASS 0
 HV1076
 HV1076.The horizontal coordinates were scaled from a map and have
 HV1076.an estimated accuracy of +/- 6 seconds.
 HV1076
 HV1076.The orthometric height was determined by differential leveling and
 HV1076.adjusted by the NATIONAL GEODETIC SURVEY
 HV1076.in June 1991.
 HV1076
 HV1076.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1076.GEOID18 height accuracy estimate available here.
 HV1076
 HV1076.Click photographs - Photos may exist for this station.
 HV1076
 HV1076.The dynamic height is computed by dividing the NAVD 88
 HV1076.geopotential number by the normal gravity value computed on the
 HV1076.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1076.degrees latitude (g = 980.6199 gals.).
 HV1076
 HV1076.The modeled gravity was interpolated from observed gravity values.
 HV1076
 HV1076;                    North         East    Units  Estimated Accuracy
 HV1076;SPC MD       -   117,450.      404,180.      MT  (+/- 180 meters Scaled)
 HV1076
 HV1076_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH303880(NAD 83)
 HV1076
 HV1076                          SUPERSEDED SURVEY CONTROL
 HV1076
 HV1076  NGVD 29 (05/01/89)   70.806  (m)          232.30   (f) ADJUSTED    2 0
 HV1076  NGVD 29 (??/??/87)   70.834  (m)          232.39   (f) SUPERSEDED  2 0
 HV1076
 HV1076.Superseded values are not recommended for survey control.
 HV1076
 HV1076.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1076.See file dsdata.pdf to determine how the superseded data were derived.
 HV1076
 HV1076_MARKER: DB = BENCH MARK DISK
 HV1076_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1076_STAMPING: G 86 1942
 HV1076_MARK LOGO: CGS
 HV1076_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1076+STABILITY: SURFACE MOTION
 HV1076
 HV1076  HISTORY     - Date     Condition        Report By
 HV1076  HISTORY     - 1942     MONUMENTED       CGS
 HV1076
 HV1076                          STATION DESCRIPTION
 HV1076
 HV1076'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1076'4.4 MI SW FROM CLINTON.
 HV1076'4.4 MILES SOUTHWEST ALONG THE PISCATAWAY ROAD FROM THE MAIN
 HV1076'INTERSECTION AT CLINTON, 1.9 MILES NORTHEAST OF ST. MARYS CHURCH
 HV1076'AT PISCATAWAY AT A SMALL ONE-STORY FARMHOUSE ON THE NORTHWEST
 HV1076'SIDE OF THE ROAD, IN THE EAST CORNER OF THE YARD, 66 FEET
 HV1076'SOUTHEAST OF THE EAST CORNER OF THE FARM HOUSE PORCH, 20.5 FEET
 HV1076'NORTHWEST OF THE CENTERLINE OF THE ROAD, 2.2 FEET NORTH OF
 HV1076'TELEPHONE POLE 822940, AND LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2549 ***********************************************************************
 JV2549  DESIGNATION -  G 87
 JV2549  PID         -  JV2549
 JV2549  STATE/COUNTY-  MD/CARROLL
 JV2549  COUNTRY     -  US
 JV2549  USGS QUAD   -  DAMASCUS (2016)
 JV2549
 JV2549                         *CURRENT SURVEY CONTROL
 JV2549  ______________________________________________________________________
 JV2549* NAD 83(1986) POSITION- 39 21 48.     (N) 077 09 29.     (W)   SCALED
 JV2549* NAVD 88 ORTHO HEIGHT -   243.271 (meters)      798.13  (feet) ADJUSTED
 JV2549  ______________________________________________________________________
 JV2549  GEOID HEIGHT    -        -31.925 (meters)                     GEOID18
 JV2549  DYNAMIC HEIGHT  -        243.143 (meters)      797.71  (feet) COMP
 JV2549  MODELED GRAVITY -    980,095.2   (mgal)                       NAVD 88
 JV2549
 JV2549  VERT ORDER      -  SECOND    CLASS 0
 JV2549
 JV2549.The horizontal coordinates were scaled from a map and have
 JV2549.an estimated accuracy of +/- 6 seconds.
 JV2549
 JV2549.The orthometric height was determined by differential leveling and
 JV2549.adjusted by the NATIONAL GEODETIC SURVEY
 JV2549.in June 1991.
 JV2549
 JV2549.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2549.GEOID18 height accuracy estimate available here.
 JV2549
 JV2549.Click photographs - Photos may exist for this station.
 JV2549
 JV2549.The dynamic height is computed by dividing the NAVD 88
 JV2549.geopotential number by the normal gravity value computed on the
 JV2549.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2549.degrees latitude (g = 980.6199 gals.).
 JV2549
 JV2549.The modeled gravity was interpolated from observed gravity values.
 JV2549
 JV2549;                    North         East    Units  Estimated Accuracy
 JV2549;SPC MD       -   188,350.      386,380.      MT  (+/- 180 meters Scaled)
 JV2549
 JV2549_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ140593(NAD 83)
 JV2549
 JV2549                          SUPERSEDED SURVEY CONTROL
 JV2549
 JV2549  NGVD 29 (11/26/84)  243.475  (m)          798.80   (f) ADJUSTED    2 0
 JV2549
 JV2549.Superseded values are not recommended for survey control.
 JV2549
 JV2549.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2549.See file dsdata.pdf to determine how the superseded data were derived.
 JV2549
 JV2549_MARKER: DB = BENCH MARK DISK
 JV2549_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2549_STAMPING: G 87 1942
 JV2549_MARK LOGO: CGS
 JV2549_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2549+STABILITY: SURFACE MOTION
 JV2549
 JV2549  HISTORY     - Date     Condition        Report By
 JV2549  HISTORY     - 1942     MONUMENTED       CGS
 JV2549  HISTORY     - 1958     GOOD             CGS
 JV2549  HISTORY     - 20050525 MARK NOT FOUND   USPSQD
 JV2549
 JV2549                          STATION DESCRIPTION
 JV2549
 JV2549'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2549'AT RIDGEVILLE.
 JV2549'AT RIDGEVILLE, ABOUT 0.45 MILE EAST ALONG OLD U.S. HIGHWAY 40
 JV2549'FROM THE INTERSECTION OF STATE HIGHWAY 27, NEAR THE JUNCTION OF
 JV2549'THE BENNETT BRANCH ROAD LEADING NORTH, 32 1/2 FEET SOUTH OF THE
 JV2549'CENTER LINE OF THE OLD HIGHWAY, 13 FEET EAST OF THE EXTENDED
 JV2549'CENTER LINE OF THE BENNETT BRANCH ROAD, 39.5 FEET NORTHWEST OF
 JV2549'THE NORTHWEST CORNER OF A WHITE FRAME HOUSE, 16 FEET NORTHWEST
 JV2549'OF A 15-INCH TREE, 8 1/2 FEET SOUTH OF A POWER LINE POLE, SET
 JV2549'IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE
 JV2549'GROUND AND ABOUT 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
 JV2549'NOTE-- THIS MARK IS DESCRIBED AS BEING IN HOWARD COUNTY ON
 JV2549'DESCRIPTION DATED DECEMBER 28, 1954, HYATTSTOWN AREA.  IT IS
 JV2549'BELIEVED TO BE IN CARROLL COUNTY.
 JV2549
 JV2549                          STATION RECOVERY (2005)
 JV2549
 JV2549'RECOVERY NOTE BY US POWER SQUADRON 2005 (BRE)
 JV2549'EXTENSIVE REROUTING OF HIGHWAY. I-70 NOW IN THE AREA. MANY NEW HOUSES
 JV2549'IN THE AREA. BENNETT BRANCH ROAD NOW CUT OFF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2958 ***********************************************************************
 JV2958  DESIGNATION -  G 88
 JV2958  PID         -  JV2958
 JV2958  STATE/COUNTY-  MD/FREDERICK
 JV2958  COUNTRY     -  US
 JV2958  USGS QUAD   -  MIDDLETOWN (2016)
 JV2958
 JV2958                         *CURRENT SURVEY CONTROL
 JV2958  ______________________________________________________________________
 JV2958* NAD 83(1986) POSITION- 39 27 00.     (N) 077 33 45.     (W)   SCALED
 JV2958* NAVD 88 ORTHO HEIGHT -   128.246 (meters)      420.75  (feet) ADJUSTED
 JV2958  ______________________________________________________________________
 JV2958  GEOID HEIGHT    -        -33.145 (meters)                     GEOID18
 JV2958  DYNAMIC HEIGHT  -        128.174 (meters)      420.52  (feet) COMP
 JV2958  MODELED GRAVITY -    980,067.2   (mgal)                       NAVD 88
 JV2958
 JV2958  VERT ORDER      -  SECOND    CLASS 0
 JV2958
 JV2958.The horizontal coordinates were scaled from a map and have
 JV2958.an estimated accuracy of +/- 6 seconds.
 JV2958
 JV2958.The orthometric height was determined by differential leveling and
 JV2958.adjusted by the NATIONAL GEODETIC SURVEY
 JV2958.in June 1991.
 JV2958
 JV2958.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2958.GEOID18 height accuracy estimate available here.
 JV2958
 JV2958.Click photographs - Photos may exist for this station.
 JV2958
 JV2958.The dynamic height is computed by dividing the NAVD 88
 JV2958.geopotential number by the normal gravity value computed on the
 JV2958.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2958.degrees latitude (g = 980.6199 gals.).
 JV2958
 JV2958.The modeled gravity was interpolated from observed gravity values.
 JV2958
 JV2958;                    North         East    Units  Estimated Accuracy
 JV2958;SPC MD       -   198,110.      351,580.      MT  (+/- 180 meters Scaled)
 JV2958
 JV2958_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ795698(NAD 83)
 JV2958
 JV2958                          SUPERSEDED SURVEY CONTROL
 JV2958
 JV2958  NGVD 29 (11/26/84)  128.458  (m)          421.45   (f) ADJUSTED    2 0
 JV2958
 JV2958.Superseded values are not recommended for survey control.
 JV2958
 JV2958.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2958.See file dsdata.pdf to determine how the superseded data were derived.
 JV2958
 JV2958_MARKER: DB = BENCH MARK DISK
 JV2958_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2958_SP_SET: BRIDGE
 JV2958_STAMPING: G 88 1942
 JV2958_MARK LOGO: CGS
 JV2958_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2958
 JV2958  HISTORY     - Date     Condition        Report By
 JV2958  HISTORY     - 1942     MONUMENTED       CGS
 JV2958
 JV2958                          STATION DESCRIPTION
 JV2958
 JV2958'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2958'1.1 MI W FROM MIDDLETOWN.
 JV2958'1.1 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION
 JV2958'OF STATE HIGHWAY 17 AT MIDDLETOWN, FREDERICK COUNTY, AT THE
 JV2958'CONCRETE BRIDGE OVER CATOCTIN CREEK, 48.8 FEET NORTHWEST OF
 JV2958'THE SOUTHEAST END OF THE SOUTHWEST BANISTER, IN THE FOUNDATION
 JV2958'OF THE SOUTHWEST BANISTER, 12.3 FEET SOUTHWEST OF THE CENTER
 JV2958'LINE OF THE HIGHWAY, AND 1 FOOT HIGHER THAN THE HIGHWAY.  A
 JV2958'STANDARD DISK, STAMPED G 88 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3528 ***********************************************************************
 JV3528  DESIGNATION -  G 89
 JV3528  PID         -  JV3528
 JV3528  STATE/COUNTY-  MD/FREDERICK
 JV3528  COUNTRY     -  US
 JV3528  USGS QUAD   -  MYERSVILLE (2016)
 JV3528
 JV3528                         *CURRENT SURVEY CONTROL
 JV3528  ______________________________________________________________________
 JV3528* NAD 83(1986) POSITION- 39 31 36.     (N) 077 32 18.     (W)   SCALED
 JV3528* NAVD 88 ORTHO HEIGHT -   200.358 (meters)      657.34  (feet) ADJUSTED
 JV3528  ______________________________________________________________________
 JV3528  GEOID HEIGHT    -        -33.157 (meters)                     GEOID18
 JV3528  DYNAMIC HEIGHT  -        200.246 (meters)      656.97  (feet) COMP
 JV3528  MODELED GRAVITY -    980,065.8   (mgal)                       NAVD 88
 JV3528
 JV3528  VERT ORDER      -  SECOND    CLASS 0
 JV3528
 JV3528.The horizontal coordinates were scaled from a map and have
 JV3528.an estimated accuracy of +/- 6 seconds.
 JV3528
 JV3528.The orthometric height was determined by differential leveling and
 JV3528.adjusted by the NATIONAL GEODETIC SURVEY
 JV3528.in June 1991.
 JV3528
 JV3528.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3528.GEOID18 height accuracy estimate available here.
 JV3528
 JV3528.Click photographs - Photos may exist for this station.
 JV3528
 JV3528.The dynamic height is computed by dividing the NAVD 88
 JV3528.geopotential number by the normal gravity value computed on the
 JV3528.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3528.degrees latitude (g = 980.6199 gals.).
 JV3528
 JV3528.The modeled gravity was interpolated from observed gravity values.
 JV3528
 JV3528;                    North         East    Units  Estimated Accuracy
 JV3528;SPC MD       -   206,610.      353,710.      MT  (+/- 180 meters Scaled)
 JV3528
 JV3528_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ818783(NAD 83)
 JV3528
 JV3528                          SUPERSEDED SURVEY CONTROL
 JV3528
 JV3528  NGVD 29 (11/26/84)  200.566  (m)          658.02   (f) ADJUSTED    2 0
 JV3528
 JV3528.Superseded values are not recommended for survey control.
 JV3528
 JV3528.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3528.See file dsdata.pdf to determine how the superseded data were derived.
 JV3528
 JV3528_MARKER: DB = BENCH MARK DISK
 JV3528_SETTING: 80 = SET IN A BOULDER
 JV3528_STAMPING: G 89 1942
 JV3528_MARK LOGO: CGS
 JV3528_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3528+STABILITY: SURFACE MOTION
 JV3528
 JV3528  HISTORY     - Date     Condition        Report By
 JV3528  HISTORY     - 1942     MONUMENTED       CGS
 JV3528
 JV3528                          STATION DESCRIPTION
 JV3528
 JV3528'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3528'0.3 MI NE FROM ELLERTON.
 JV3528'0.3 MILE NORTHEAST ALONG STATE HIGHWAY 17 FROM THE STEEL BRIDGE
 JV3528'AT ELLERTON, FREDERICK COUNTY, 73.7 FEET NORTHEAST ACROSS THE
 JV3528'HIGHWAY FROM POLE 94, AT A TWO-STORY YELLOW HOUSE, 23.3 FEET
 JV3528'WEST OF THE WEST CORNER OF THE HOUSE, IN LINE WITH THE FRONT OF
 JV3528'THE HOUSE, 43.8 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY,
 JV3528'IN THE TOP OF A BOULDER, AND ABOUT 2 FEET HIGHER THAN THE
 JV3528'HIGHWAY.  A STANDARD DISK, STAMPED G 89 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0057 ***********************************************************************
 HV0057  DESIGNATION -  G 9
 HV0057  PID         -  HV0057
 HV0057  STATE/COUNTY-  MD/QUEEN ANNES
 HV0057  COUNTRY     -  US
 HV0057  USGS QUAD   -  QUEENSTOWN (2016)
 HV0057
 HV0057                         *CURRENT SURVEY CONTROL
 HV0057  ______________________________________________________________________
 HV0057* NAD 83(1986) POSITION- 38 59 41.     (N) 076 07 50.     (W)   SCALED
 HV0057* NAVD 88 ORTHO HEIGHT -     8.447 (meters)       27.71  (feet) ADJUSTED
 HV0057  ______________________________________________________________________
 HV0057  GEOID HEIGHT    -        -33.877 (meters)                     GEOID18
 HV0057  DYNAMIC HEIGHT  -          8.442 (meters)       27.70  (feet) COMP
 HV0057  MODELED GRAVITY -    980,080.8   (mgal)                       NAVD 88
 HV0057
 HV0057  VERT ORDER      -  SECOND    CLASS 0
 HV0057
 HV0057.The horizontal coordinates were scaled from a map and have
 HV0057.an estimated accuracy of +/- 6 seconds.
 HV0057
 HV0057.The orthometric height was determined by differential leveling and
 HV0057.adjusted by the NATIONAL GEODETIC SURVEY
 HV0057.in June 1991.
 HV0057
 HV0057.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0057.GEOID18 height accuracy estimate available here.
 HV0057
 HV0057.Click photographs - Photos may exist for this station.
 HV0057
 HV0057.The dynamic height is computed by dividing the NAVD 88
 HV0057.geopotential number by the normal gravity value computed on the
 HV0057.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0057.degrees latitude (g = 980.6199 gals.).
 HV0057
 HV0057.The modeled gravity was interpolated from observed gravity values.
 HV0057
 HV0057;                    North         East    Units  Estimated Accuracy
 HV0057;SPC MD       -   147,780.      475,320.      MT  (+/- 180 meters Scaled)
 HV0057
 HV0057_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ020167(NAD 83)
 HV0057
 HV0057                          SUPERSEDED SURVEY CONTROL
 HV0057
 HV0057  NGVD 29 (11/26/84)    8.684  (m)           28.49   (f) ADJUSTED    2 0
 HV0057
 HV0057.Superseded values are not recommended for survey control.
 HV0057
 HV0057.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0057.See file dsdata.pdf to determine how the superseded data were derived.
 HV0057
 HV0057_MARKER: DB = BENCH MARK DISK
 HV0057_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0057_STAMPING: G 9 1935
 HV0057_MARK LOGO: CGS
 HV0057_PROJECTION: PROJECTING 13 CENTIMETERS
 HV0057_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0057+STABILITY: SURFACE MOTION
 HV0057
 HV0057  HISTORY     - Date     Condition        Report By
 HV0057  HISTORY     - 1935     MONUMENTED       CGS
 HV0057  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0057
 HV0057                          STATION DESCRIPTION
 HV0057
 HV0057'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 HV0057'4.9 MI SE FROM CENTREVILLE.
 HV0057'4.9 MILES SOUTHEAST ALONG THE BALTIMORE AND EASTERN RAILROAD
 HV0057'FROM THE STATION AT CENTREVILLE, QUEEN ANNES COUNTY, 1.5 MILES
 HV0057'NORTHEAST ALONG STATE HIGHWAY 18 FROM QUEENSTOWN, THENCE 0.4 MILE
 HV0057'SOUTHEAST ALONG A COUNTY ROAD, AT THE CROSSING OF THE ABANDONED
 HV0057'RAILROAD BED, 40 FEET EAST OF THE CENTERLINE OF THE ROADBED,
 HV0057'32 FEET SOUTH OF THE CENTERLINE OF THE ROAD, 8 FEET SOUTHEAST
 HV0057'OF THE NORTHWEST CORNER OF A CULTIVATED FIELD, AND LEVEL WITH THE
 HV0057'ROADBED.  A STANDARD DISK, STAMPED G 9 1935 AND SET IN THE TOP
 HV0057'OF A CONCRETE POST PROJECTING 5 INCHES ABOVE GROUND.
 HV0057
 HV0057                          STATION RECOVERY (1971)
 HV0057
 HV0057'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0057'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1888 ***********************************************************************
 JV1888  DESIGNATION -  G 90
 JV1888  PID         -  JV1888
 JV1888  STATE/COUNTY-  MD/FREDERICK
 JV1888  COUNTRY     -  US
 JV1888  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV1888
 JV1888                         *CURRENT SURVEY CONTROL
 JV1888  ______________________________________________________________________
 JV1888* NAD 83(1986) POSITION- 39 34 00.92   (N) 077 25 57.59   (W)   HD_HELD1
 JV1888* NAVD 88 ORTHO HEIGHT -   128.966 (meters)      423.12  (feet) ADJUSTED
 JV1888  ______________________________________________________________________
 JV1888  GEOID HEIGHT    -        -33.037 (meters)                     GEOID18
 JV1888  DYNAMIC HEIGHT  -        128.898 (meters)      422.89  (feet) COMP
 JV1888  MODELED GRAVITY -    980,091.7   (mgal)                       NAVD 88
 JV1888
 JV1888  VERT ORDER      -  SECOND    CLASS I
 JV1888
 JV1888.The horizontal coordinates were determined by differentially corrected
 JV1888.hand held GPS observations or other comparable positioning techniques
 JV1888.and have an estimated accuracy of +/- 3 meters.
 JV1888
 JV1888.The orthometric height was determined by differential leveling and
 JV1888.adjusted by the NATIONAL GEODETIC SURVEY
 JV1888.in June 1991.
 JV1888
 JV1888.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1888.GEOID18 height accuracy estimate available here.
 JV1888
 JV1888.Click photographs - Photos may exist for this station.
 JV1888
 JV1888.The dynamic height is computed by dividing the NAVD 88
 JV1888.geopotential number by the normal gravity value computed on the
 JV1888.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1888.degrees latitude (g = 980.6199 gals.).
 JV1888
 JV1888.The modeled gravity was interpolated from observed gravity values.
 JV1888
 JV1888;                    North         East    Units  Estimated Accuracy
 JV1888;SPC MD       -   211,033.2     362,820.1     MT  (+/- 3 meters HH1 GPS) 
 JV1888
 JV1888_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9103082518(NAD 83)
 JV1888
 JV1888                          SUPERSEDED SURVEY CONTROL
 JV1888
 JV1888  NGVD 29 (11/26/84)  129.171  (m)          423.79   (f) ADJUSTED    2 0
 JV1888
 JV1888.Superseded values are not recommended for survey control.
 JV1888
 JV1888.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1888.See file dsdata.pdf to determine how the superseded data were derived.
 JV1888
 JV1888_MARKER: DB = BENCH MARK DISK
 JV1888_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1888_STAMPING: G 90 1942
 JV1888_MARK LOGO: CGS
 JV1888_PROJECTION: PROJECTING 13 CENTIMETERS
 JV1888_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1888+STABILITY: SURFACE MOTION
 JV1888_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1888+SATELLITE: SATELLITE OBSERVATIONS - November 26, 2019
 JV1888
 JV1888  HISTORY     - Date     Condition        Report By
 JV1888  HISTORY     - 1942     MONUMENTED       CGS
 JV1888  HISTORY     - 1990     GOOD             USPSQD
 JV1888  HISTORY     - 20011206 GOOD             MDSHA
 JV1888  HISTORY     - 20090508 GOOD             NAGEL
 JV1888  HISTORY     - 20170813 GOOD             BASE9
 JV1888  HISTORY     - 20191126 GOOD             NGS
 JV1888
 JV1888                          STATION DESCRIPTION
 JV1888
 JV1888'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1888'1 MI S FROM CATOCTIN.
 JV1888'1.0 MILE SOUTH ALONG U.S. HIGHWAY 15 FROM THE T-JUNCTION OF A
 JV1888'DIRT ROAD LEADING WEST AT CATOCTIN, FREDERICK COUNTY, 73.8 FEET
 JV1888'SOUTHWEST ACROSS THE HIGHWAY FROM HIGHWAY MARKER 101, 26 FEET
 JV1888'WEST OF THE CENTER LINE OF THE HIGHWAY, 13.5 FEET NORTH OF A
 JV1888'POLE, 1.5 FEET EAST OF A WIRE FENCE PARALLELING THE HIGHWAY,
 JV1888'2.5 FEET SOUTH OF A WHITE WOODEN WITNESS POST, AND ABOUT 2-1/2
 JV1888'FEET LOWER THAN THE HIGHWAY.  A STANDARD DISK, STAMPED G 90 1942
 JV1888'AND SET IN THE TOP OF A CONCRETE POST.
 JV1888
 JV1888                          STATION RECOVERY (1990)
 JV1888
 JV1888'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1888'RECOVERED IN GOOD CONDITION.
 JV1888
 JV1888                          STATION RECOVERY (2001)
 JV1888
 JV1888'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1888'THE STATION WAS RECOVERED IN GOOD CONDITION. THE STATION IS LOCATED
 JV1888'ABOUT 1.0 MI (1.61 KM) SOUTH ALONG STATE HIGHWAY 806 (OLD U.S.HIGHWAY
 JV1888'15) FROM THE INTERSECTION WITH CATOCHIN HOLLOW ROAD IN CATOCHIN. IT IS
 JV1888'25.5 FT (7.8 M) WEST OF THE CENTER LINE OF THE HIGHWAY, 30.1 FT (9.2
 JV1888'M) NORTH OF TELEPHONE POLE NUMBER 426,AND PROJECTING 0.5 FEET.
 JV1888
 JV1888                          STATION RECOVERY (2009)
 JV1888
 JV1888'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2009 (GEN)
 JV1888'RECOVERED IN GOOD CONDITION.
 JV1888
 JV1888                          STATION RECOVERY (2017)
 JV1888
 JV1888'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (RLD)
 JV1888'HIGHWAY 806 IS ALSO REFERENCED AS AUBURN ROAD.
 JV1888
 JV1888                          STATION RECOVERY (2019)
 JV1888
 JV1888'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV1888'THE MARK IS LOCATED ABOUT 7.0 MI (11.3 KM) NORTHWEST OF WALKERSVILLE,
 JV1888'6.7 MI (10.8 KM) WEST-NORTHWEST OF WOODSBORO AND 0.8 MI (1.3 KM) SOUTH
 JV1888'OF CATOCTIN FURNACE.  THE MARK IS 26 FT (7.9 M) WEST OF THE CENTERLINE
 JV1888'OF STATE HIGHWAY 806, 7 FT (2.1 M) WEST OF ELECTRIC FENCE AND 30 FT
 JV1888'(9.1 M)  NORTH OF UTILITY POLE NUMBER 426.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2370 ***********************************************************************
 JV2370  DESIGNATION -  G 91
 JV2370  PID         -  JV2370
 JV2370  STATE/COUNTY-  MD/FREDERICK
 JV2370  COUNTRY     -  US
 JV2370  USGS QUAD   -  URBANA (2016)
 JV2370
 JV2370                         *CURRENT SURVEY CONTROL
 JV2370  ______________________________________________________________________
 JV2370* NAD 83(1986) POSITION- 39 17 51.     (N) 077 18 18.     (W)   SCALED
 JV2370* NAVD 88 ORTHO HEIGHT -   152.014 (meters)      498.73  (feet) ADJUSTED
 JV2370  ______________________________________________________________________
 JV2370  GEOID HEIGHT    -        -32.120 (meters)                     GEOID18
 JV2370  DYNAMIC HEIGHT  -        151.934 (meters)      498.47  (feet) COMP
 JV2370  MODELED GRAVITY -    980,095.5   (mgal)                       NAVD 88
 JV2370
 JV2370  VERT ORDER      -  SECOND    CLASS 0
 JV2370
 JV2370.The horizontal coordinates were scaled from a map and have
 JV2370.an estimated accuracy of +/- 6 seconds.
 JV2370
 JV2370.The orthometric height was determined by differential leveling and
 JV2370.adjusted by the NATIONAL GEODETIC SURVEY
 JV2370.in June 1991.
 JV2370
 JV2370.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2370.GEOID18 height accuracy estimate available here.
 JV2370
 JV2370.Click photographs - Photos may exist for this station.
 JV2370
 JV2370.The dynamic height is computed by dividing the NAVD 88
 JV2370.geopotential number by the normal gravity value computed on the
 JV2370.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2370.degrees latitude (g = 980.6199 gals.).
 JV2370
 JV2370.The modeled gravity was interpolated from observed gravity values.
 JV2370
 JV2370;                    North         East    Units  Estimated Accuracy
 JV2370;SPC MD       -   181,080.      373,690.      MT  (+/- 180 meters Scaled)
 JV2370
 JV2370_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ012523(NAD 83)
 JV2370
 JV2370                          SUPERSEDED SURVEY CONTROL
 JV2370
 JV2370  NGVD 29 (11/26/84)  152.213  (m)          499.39   (f) ADJUSTED    2 0
 JV2370
 JV2370.Superseded values are not recommended for survey control.
 JV2370
 JV2370.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2370.See file dsdata.pdf to determine how the superseded data were derived.
 JV2370
 JV2370_MARKER: DB = BENCH MARK DISK
 JV2370_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2370_STAMPING: G 91 1942
 JV2370_MARK LOGO: CGS
 JV2370_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2370+STABILITY: SURFACE MOTION
 JV2370
 JV2370  HISTORY     - Date     Condition        Report By
 JV2370  HISTORY     - 1942     MONUMENTED       CGS
 JV2370  HISTORY     - 20010615 MARK NOT FOUND   MDSHA
 JV2370
 JV2370                          STATION DESCRIPTION
 JV2370
 JV2370'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2370'1.4 MI N FROM HYATTSTOWN.
 JV2370'IN FREDERICK COUNTY, 1.4 MILES NORTH OF HYATTSTOWN, MONTGOMERY
 JV2370'COUNTY.  THIS BENCH MARK MAY BE REACHED FROM THE POST OFFICE BY
 JV2370'GOING 0.7 MILE NORTH ALONG U.S. HIGHWAY 240, THENCE 0.7 MILE
 JV2370'NORTHEAST ALONG STATE HIGHWAY 75.  IT IS 125 FEET NORTHEAST OF
 JV2370'HIGHWAY MARKER 7, 19 FEET SOUTHEAST OF THE CENTER LINE OF THE
 JV2370'HIGHWAY, 11 FEET NORTHEAST OF A POWER-TRANSMISSION LINE POLE,
 JV2370'7.5 FEET SOUTHWEST OF A 6-INCH PINE TREE, AND 1 FOOT NORTHWEST OF
 JV2370'A FENCE PARALLELING THE HIGHWAY.  A STANDARD DISK, STAMPED G 91
 JV2370'1942 AND SET IN THE TOP OF A CONCRETE POST.
 JV2370
 JV2370                          STATION RECOVERY (2001)
 JV2370
 JV2370'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2370'THE STATION WAS SEARCHED FOR AND NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0774 ***********************************************************************
 JV0774  DESIGNATION -  G 92
 JV0774  PID         -  JV0774
 JV0774  STATE/COUNTY-  MD/BALTIMORE
 JV0774  COUNTRY     -  US
 JV0774  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0774
 JV0774                         *CURRENT SURVEY CONTROL
 JV0774  ______________________________________________________________________
 JV0774* NAD 83(1986) POSITION- 39 21 08.     (N) 076 47 58.     (W)   SCALED
 JV0774* NAVD 88 ORTHO HEIGHT -   155.313 (meters)      509.56  (feet) ADJUSTED
 JV0774  ______________________________________________________________________
 JV0774  GEOID HEIGHT    -        -32.156 (meters)                     GEOID18
 JV0774  DYNAMIC HEIGHT  -        155.232 (meters)      509.29  (feet) COMP
 JV0774  MODELED GRAVITY -    980,101.9   (mgal)                       NAVD 88
 JV0774
 JV0774  VERT ORDER      -  SECOND    CLASS 0
 JV0774
 JV0774.The horizontal coordinates were scaled from a map and have
 JV0774.an estimated accuracy of +/- 6 seconds.
 JV0774
 JV0774.The orthometric height was determined by differential leveling and
 JV0774.adjusted by the NATIONAL GEODETIC SURVEY
 JV0774.in June 1991.
 JV0774
 JV0774.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0774.GEOID18 height accuracy estimate available here.
 JV0774
 JV0774.Click photographs - Photos may exist for this station.
 JV0774
 JV0774.The dynamic height is computed by dividing the NAVD 88
 JV0774.geopotential number by the normal gravity value computed on the
 JV0774.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0774.degrees latitude (g = 980.6199 gals.).
 JV0774
 JV0774.The modeled gravity was interpolated from observed gravity values.
 JV0774
 JV0774;                    North         East    Units  Estimated Accuracy
 JV0774;SPC MD       -   187,130.      417,290.      MT  (+/- 180 meters Scaled)
 JV0774
 JV0774_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ449574(NAD 83)
 JV0774
 JV0774                          SUPERSEDED SURVEY CONTROL
 JV0774
 JV0774  NGVD 29 (11/26/84)  155.532  (m)          510.27   (f) ADJUSTED    2 0
 JV0774
 JV0774.Superseded values are not recommended for survey control.
 JV0774
 JV0774.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0774.See file dsdata.pdf to determine how the superseded data were derived.
 JV0774
 JV0774_MARKER: DB = BENCH MARK DISK
 JV0774_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0774_STAMPING: G 92 1942
 JV0774_MARK LOGO: CGS
 JV0774_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0774+STABILITY: SURFACE MOTION
 JV0774
 JV0774  HISTORY     - Date     Condition        Report By
 JV0774  HISTORY     - 1942     MONUMENTED       CGS
 JV0774  HISTORY     - 1967     GOOD             CGS
 JV0774
 JV0774                          STATION DESCRIPTION
 JV0774
 JV0774'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JV0774'1.4 MI SW FROM RANDALLSTOWN.
 JV0774'1.4 MILES SOUTHWEST ALONG STATE HIGHWAY 125 FROM THE INTERSECTION
 JV0774'OF STATE HIGHWAY 26 AT RANDALLSTOWN, BALTIMORE COUNTY, AT THE WYE
 JV0774'JUNCTION OF A DIRT ROAD LEADING NORTHWEST, 20.5 FEET NORTHWEST
 JV0774'OF THE CENTER LINE OF THE HIGHWAY, 17 FEET WEST OF THE CENTER
 JV0774'LINE OF THE DIRT ROAD, 21 FEET SOUTHEAST OF A 12-INCH BLAZED
 JV0774'OAK TREE, AND NEAR A WHITE WOODEN WITNESS POST.  A STANDARD
 JV0774'DISK, STAMPED G 92 1942 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2854 ***********************************************************************
 JV2854  DESIGNATION -  G 94
 JV2854  PID         -  JV2854
 JV2854  STATE/COUNTY-  MD/MONTGOMERY
 JV2854  COUNTRY     -  US
 JV2854  USGS QUAD   -  ROCKVILLE (2016)
 JV2854
 JV2854                         *CURRENT SURVEY CONTROL
 JV2854  ______________________________________________________________________
 JV2854* NAD 83(1986) POSITION- 39 00 45.06   (N) 077 13 00.41   (W)   HD_HELD1
 JV2854* NAVD 88 ORTHO HEIGHT -   104.615 (meters)      343.22  (feet) ADJUSTED
 JV2854  ______________________________________________________________________
 JV2854  GEOID HEIGHT    -        -31.717 (meters)                     GEOID18
 JV2854  DYNAMIC HEIGHT  -        104.561 (meters)      343.05  (feet) COMP
 JV2854  MODELED GRAVITY -    980,108.6   (mgal)                       NAVD 88
 JV2854
 JV2854  VERT ORDER      -  SECOND    CLASS I
 JV2854
 JV2854.The horizontal coordinates were determined by differentially corrected
 JV2854.hand held GPS observations or other comparable positioning techniques
 JV2854.and have an estimated accuracy of +/- 3 meters.
 JV2854
 JV2854.The orthometric height was determined by differential leveling and
 JV2854.adjusted by the NATIONAL GEODETIC SURVEY
 JV2854.in June 1991.
 JV2854
 JV2854.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2854.GEOID18 height accuracy estimate available here.
 JV2854
 JV2854.Click photographs - Photos may exist for this station.
 JV2854
 JV2854.The dynamic height is computed by dividing the NAVD 88
 JV2854.geopotential number by the normal gravity value computed on the
 JV2854.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2854.degrees latitude (g = 980.6199 gals.).
 JV2854
 JV2854.The modeled gravity was interpolated from observed gravity values.
 JV2854
 JV2854;                    North         East    Units  Estimated Accuracy
 JV2854;SPC MD       -   149,418.0     381,225.3     MT  (+/- 3 meters HH1 GPS) 
 JV2854
 JV2854_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0806820503(NAD 83)
 JV2854
 JV2854                          SUPERSEDED SURVEY CONTROL
 JV2854
 JV2854  NGVD 29 (11/26/84)  104.848  (m)          343.99   (f) ADJUSTED    2 0
 JV2854
 JV2854.Superseded values are not recommended for survey control.
 JV2854
 JV2854.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2854.See file dsdata.pdf to determine how the superseded data were derived.
 JV2854
 JV2854_MARKER: DB = BENCH MARK DISK
 JV2854_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV2854_SP_SET: CULVERT HEADWALL
 JV2854_STAMPING: G 94 1944
 JV2854_MARK LOGO: CGS
 JV2854_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2854_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2854+STABILITY: SURFACE MOTION
 JV2854_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2854+SATELLITE: SATELLITE OBSERVATIONS - August 17, 2001
 JV2854
 JV2854  HISTORY     - Date     Condition        Report By
 JV2854  HISTORY     - 1944     MONUMENTED       CGS
 JV2854  HISTORY     - 1965     GOOD             WSSC
 JV2854  HISTORY     - 20010817 GOOD             MDSHA
 JV2854  HISTORY     - 20060318 GOOD             GEOCAC
 JV2854
 JV2854                          STATION DESCRIPTION
 JV2854
 JV2854'DESCRIBED BY WASH SUBURB SAN COMM 1965
 JV2854'0.6 MI SW FROM POTOMAC.
 JV2854'0.55 MI. S.W. ALONG STATE HWY. 189 (FALLS ROAD) FROM ITS
 JV2854'INTERSECTION WITH STATE HWY. 190 (RIVER ROAD) AT POTOMAC IN A
 JV2854'CONCRETE CULVERT 15 FT. W. OF THE CENTER LINE OF THE HWY., 100
 JV2854'FT. N. OF A ROAD W., AND 18 INCHES N. OF THE S. END OF THE
 JV2854'CULVERT.
 JV2854
 JV2854                          STATION RECOVERY (2001)
 JV2854
 JV2854'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2854'RECOVERED AS DESCRIBED.
 JV2854
 JV2854                          STATION RECOVERY (2006)
 JV2854
 JV2854'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JV2854'FOUND AS DESCRIBED IN GOOD CONDITION ON TOP OF THE HEADWALL OF A
 JV2854'CULVERT LOCATED DIRECTLY ACROSS THE STREET FROM HOUSE NUMBER 9515.
 JV2854'THERE IS A CARSONITE WITNESS POST AT THE SOUTH END OF THE CULVERT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0161 ***********************************************************************
 JV0161  DESIGNATION -  G 96
 JV0161  PID         -  JV0161
 JV0161  STATE/COUNTY-  MD/CECIL
 JV0161  COUNTRY     -  US
 JV0161  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0161
 JV0161                         *CURRENT SURVEY CONTROL
 JV0161  ______________________________________________________________________
 JV0161* NAD 83(1986) POSITION- 39 36 35.     (N) 076 02 29.     (W)   SCALED
 JV0161* NAVD 88 ORTHO HEIGHT -    88.201 (meters)      289.37  (feet) ADJUSTED
 JV0161  ______________________________________________________________________
 JV0161  GEOID HEIGHT    -        -33.076 (meters)                     GEOID18
 JV0161  DYNAMIC HEIGHT  -         88.157 (meters)      289.23  (feet) COMP
 JV0161  MODELED GRAVITY -    980,126.8   (mgal)                       NAVD 88
 JV0161
 JV0161  VERT ORDER      -  SECOND    CLASS 0
 JV0161
 JV0161.The horizontal coordinates were scaled from a map and have
 JV0161.an estimated accuracy of +/- 6 seconds.
 JV0161
 JV0161.The orthometric height was determined by differential leveling and
 JV0161.adjusted by the NATIONAL GEODETIC SURVEY
 JV0161.in June 1991.
 JV0161
 JV0161.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0161.GEOID18 height accuracy estimate available here.
 JV0161
 JV0161.Click photographs - Photos may exist for this station.
 JV0161
 JV0161.The dynamic height is computed by dividing the NAVD 88
 JV0161.geopotential number by the normal gravity value computed on the
 JV0161.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0161.degrees latitude (g = 980.6199 gals.).
 JV0161
 JV0161.The modeled gravity was interpolated from observed gravity values.
 JV0161
 JV0161;                    North         East    Units  Estimated Accuracy
 JV0161;SPC MD       -   216,130.      482,330.      MT  (+/- 180 meters Scaled)
 JV0161
 JV0161_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ106849(NAD 83)
 JV0161
 JV0161                          SUPERSEDED SURVEY CONTROL
 JV0161
 JV0161  NGVD 29 (11/26/84)   88.489  (m)          290.32   (f) ADJUSTED    2 0
 JV0161
 JV0161.Superseded values are not recommended for survey control.
 JV0161
 JV0161.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0161.See file dsdata.pdf to determine how the superseded data were derived.
 JV0161
 JV0161_MARKER: DB = BENCH MARK DISK
 JV0161_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0161_STAMPING: G 96 1959
 JV0161_MARK LOGO: CGS
 JV0161_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0161+STABILITY: SURFACE MOTION
 JV0161
 JV0161  HISTORY     - Date     Condition        Report By
 JV0161  HISTORY     - 1959     MONUMENTED       CGS
 JV0161  HISTORY     - 1964     GOOD             CGS
 JV0161  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JV0161
 JV0161                          STATION DESCRIPTION
 JV0161
 JV0161'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV0161'4.3 MI NE FROM PERRYVILLE.
 JV0161'ABOUT 2.0 MILES NORTHEAST ALONG U.S. HIGHWAY 40 FROM THE
 JV0161'INTERSECTION OF U.S. HIGHWAY 222 AT PERRYVILLE, THENCE NORTHERLY
 JV0161'2.3 MILES ALONG A SAND ROAD, OR 0.55 MILE NORTH OF THE BRIDGE AT
 JV0161'THE NORTHEAST EXPRESSWAY.  AT A T-ROAD JUNCTION, 38 FEET
 JV0161'NORTHWEST OF A 4-TRUNKED TREE, 18 FEET EAST OF THE INTERSECTION
 JV0161'OF THE ROADS 13 FEET NORTHEAST OF CENTERLINE OF THE GRAVEL ROAD
 JV0161'AND 2 FEET SOUTHEAST OF A METAL WITNESS POST.  A STANDARD DISK
 JV0161'IN THE TOP OF A CONCRETE MONUMENT AND FLUSH WITH THE GROUND.
 JV0161
 JV0161                          STATION RECOVERY (1990)
 JV0161
 JV0161'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0161'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0177 ***********************************************************************
 JV0177  DESIGNATION -  G 97
 JV0177  PID         -  JV0177
 JV0177  STATE/COUNTY-  MD/CECIL
 JV0177  COUNTRY     -  US
 JV0177  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0177
 JV0177                         *CURRENT SURVEY CONTROL
 JV0177  ______________________________________________________________________
 JV0177* NAD 83(1986) POSITION- 39 34 33.3    (N) 076 03 25.1    (W)   HD_HELD2
 JV0177* NAVD 88 ORTHO HEIGHT -    38.451 (meters)      126.15  (feet) ADJUSTED
 JV0177  ______________________________________________________________________
 JV0177  GEOID HEIGHT    -        -33.133 (meters)                     GEOID18
 JV0177  DYNAMIC HEIGHT  -         38.431 (meters)      126.09  (feet) COMP
 JV0177  MODELED GRAVITY -    980,125.6   (mgal)                       NAVD 88
 JV0177
 JV0177  VERT ORDER      -  FIRST     CLASS I
 JV0177
 JV0177.The horizontal coordinates were established by autonomous hand held GPS
 JV0177.observations and have an estimated accuracy of +/- 10 meters.
 JV0177
 JV0177.The orthometric height was determined by differential leveling and
 JV0177.adjusted by the NATIONAL GEODETIC SURVEY
 JV0177.in June 1991.
 JV0177
 JV0177.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0177.GEOID18 height accuracy estimate available here.
 JV0177
 JV0177.Click photographs - Photos may exist for this station.
 JV0177
 JV0177.The dynamic height is computed by dividing the NAVD 88
 JV0177.geopotential number by the normal gravity value computed on the
 JV0177.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0177.degrees latitude (g = 980.6199 gals.).
 JV0177
 JV0177.The modeled gravity was interpolated from observed gravity values.
 JV0177
 JV0177;                    North         East    Units  Estimated Accuracy
 JV0177;SPC MD       -   212,362.      481,025.      MT  (+/- 10 meters HH2 GPS)
 JV0177
 JV0177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0922081223(NAD 83)
 JV0177
 JV0177                          SUPERSEDED SURVEY CONTROL
 JV0177
 JV0177  NGVD 29 (11/26/84)   38.687  (m)          126.93   (f) ADJUSTED    1 1
 JV0177
 JV0177.Superseded values are not recommended for survey control.
 JV0177
 JV0177.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0177.See file dsdata.pdf to determine how the superseded data were derived.
 JV0177
 JV0177_MARKER: DB = BENCH MARK DISK
 JV0177_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV0177_SP_SET: BRIDGE OVERPASS
 JV0177_STAMPING: G 97 1959
 JV0177_MARK LOGO: CGS
 JV0177_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0177_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0177+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2014
 JV0177
 JV0177  HISTORY     - Date     Condition        Report By
 JV0177  HISTORY     - 1959     MONUMENTED       CGS
 JV0177  HISTORY     - 1971     GOOD             NGS
 JV0177  HISTORY     - 19901113 GOOD             USPSQD
 JV0177  HISTORY     - 20140606 GOOD             JARICE
 JV0177
 JV0177                          STATION DESCRIPTION
 JV0177
 JV0177'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0177'1.1 MI NE FROM PERRYVILLE.
 JV0177'ABOUT 1.1 MILES NORTHEAST ALONG U.S. HIGHWAY 40 FROM THE
 JV0177'NORTHEAST END OF THE HIGHWAY BRIDGE OVER THE SUSQUEHANNA RIVER
 JV0177'AT PERRYVILLE, 47 YARDS NORTH OF THE NORTH LANES OF THE HIGHWAY,
 JV0177'SET IN THE TOP OF THE SOUTH END OF THE WEST CONCRETE ABUTMENT OF
 JV0177'THE BALTIMORE AND OHIO RAILROAD OVERPASS FOR MILL CREEK AND CEDAR
 JV0177'CORNER ROAD, 3 1/2 FEET SOUTH OF THE SOUTH RAIL OF THE SOUTH
 JV0177'TRACK, 1 1/2 FEET WEST OF THE EAST EDGE OF THE ABUTMENT, ABOUT
 JV0177'3 FEET BELOW THE LEVEL OF THE TRACK, AND ABOUT 25 FEET ABOVE THE
 JV0177'LEVEL OF THE HIGHWAY.  NOTE-- THIS MARK IS ALSO 0.65 MILE
 JV0177'NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV0177'UNDERPASS FOR U.S. HIGHWAY 222 AT AIKIN.
 JV0177
 JV0177                          STATION RECOVERY (1990)
 JV0177
 JV0177'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0177'RECOVERED IN GOOD CONDITION.
 JV0177
 JV0177                          STATION RECOVERY (2014)
 JV0177
 JV0177'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JV0177'RECOVERED IN GOOD CONDITION.
 JV0177'
 JV0177'NOTE-THE MARK IS PARTIALLY COVERED BY AN ELECTRICAL CONDUIT AND STEEL
 JV0177'GRATE.  IT WILL BE DIFFICULT TO LEVEL TO THIS MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0850 ***********************************************************************
 JV0850  DESIGNATION -  G 98
 JV0850  PID         -  JV0850
 JV0850  STATE/COUNTY-  MD/BALTIMORE
 JV0850  COUNTRY     -  US
 JV0850  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0850
 JV0850                         *CURRENT SURVEY CONTROL
 JV0850  ______________________________________________________________________
 JV0850* NAD 83(1986) POSITION- 39 17 18.     (N) 076 43 53.     (W)   SCALED
 JV0850* NAVD 88 ORTHO HEIGHT -   149.434 (meters)      490.27  (feet) ADJUSTED
 JV0850  ______________________________________________________________________
 JV0850  GEOID HEIGHT    -        -32.341 (meters)                     GEOID18
 JV0850  DYNAMIC HEIGHT  -        149.356 (meters)      490.01  (feet) COMP
 JV0850  MODELED GRAVITY -    980,099.7   (mgal)                       NAVD 88
 JV0850
 JV0850  VERT ORDER      -  SECOND    CLASS 0
 JV0850
 JV0850.The horizontal coordinates were scaled from a map and have
 JV0850.an estimated accuracy of +/- 6 seconds.
 JV0850
 JV0850.The orthometric height was determined by differential leveling and
 JV0850.adjusted by the NATIONAL GEODETIC SURVEY
 JV0850.in June 1991.
 JV0850
 JV0850.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0850.GEOID18 height accuracy estimate available here.
 JV0850
 JV0850.Click photographs - Photos may exist for this station.
 JV0850
 JV0850.The dynamic height is computed by dividing the NAVD 88
 JV0850.geopotential number by the normal gravity value computed on the
 JV0850.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0850.degrees latitude (g = 980.6199 gals.).
 JV0850
 JV0850.The modeled gravity was interpolated from observed gravity values.
 JV0850
 JV0850;                    North         East    Units  Estimated Accuracy
 JV0850;SPC MD       -   180,050.      423,170.      MT  (+/- 180 meters Scaled)
 JV0850
 JV0850_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ506502(NAD 83)
 JV0850
 JV0850                          SUPERSEDED SURVEY CONTROL
 JV0850
 JV0850  NGVD 29 (11/26/84)  149.652  (m)          490.98   (f) ADJUSTED    2 0
 JV0850
 JV0850.Superseded values are not recommended for survey control.
 JV0850
 JV0850.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0850.See file dsdata.pdf to determine how the superseded data were derived.
 JV0850
 JV0850_MARKER: DB = BENCH MARK DISK
 JV0850_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0850_SP_SET: FOUNDATION
 JV0850_STAMPING: G 98 1960
 JV0850_MARK LOGO: CGS
 JV0850_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0850
 JV0850  HISTORY     - Date     Condition        Report By
 JV0850  HISTORY     - 1960     MONUMENTED       CGS
 JV0850  HISTORY     - 20030921 MARK NOT FOUND   USPSQD
 JV0850
 JV0850                          STATION DESCRIPTION
 JV0850
 JV0850'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0850'2.2 MI N FROM CATONSVILLE.
 JV0850'0.6 MILE EAST ALONG FREDERICK ROAD FROM THE POST OFFICE AT
 JV0850'CATONSVILLE, THENCE ABOUT 1.15 MILES NORTHWEST ALONG BALTIMORE
 JV0850'COUNTY BELTWAY (INTERSTATE HIGHWAY 695), THENCE ABOUT 0.45 MILE
 JV0850'EAST ALONG U.S. HIGHWAY 40, AT THE INTERSECTION OF INGLESIDE AVENUE
 JV0850'AND BALTIMORE NATIONAL PIKE (U.S. HIGHWAY 40), IN THE TOP OF THE
 JV0850'SOUTHWEST CORNER OF CONCRETE FOUNDATION OF A STEEL TRAFFIC AND
 JV0850'POWER LIGHT POLE, 22 FEET SOUTH OF CENTER LINE OF EAST BOUND
 JV0850'LANE OF HIGHWAY 40, 22 FEET EAST OF CENTER LINE OF INGLESIDE
 JV0850'AVENUE, 9 FEET NORTH OF POWER POLE NO. 51 AND ABOUT 2 FEET ABOVE
 JV0850'LEVEL OF HIGHWAY 40.
 JV0850
 JV0850                          STATION RECOVERY (2003)
 JV0850
 JV0850'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0850'NOT FOUND.  THE INTERSECTION HAS BEEN MODIFIED WITH TURNING LANES.
 JV0850'THE POWER POLES ARE IN THE MEDIAN STRIP OF HIGHWAY 40.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0213 ***********************************************************************
 JV0213  DESIGNATION -  G 99
 JV0213  PID         -  JV0213
 JV0213  STATE/COUNTY-  MD/HARFORD
 JV0213  COUNTRY     -  US
 JV0213  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0213
 JV0213                         *CURRENT SURVEY CONTROL
 JV0213  ______________________________________________________________________
 JV0213* NAD 83(1986) POSITION- 39 35 01.     (N) 076 23 46.     (W)   SCALED
 JV0213* NAVD 88 ORTHO HEIGHT -   167.953 (meters)      551.03  (feet) ADJUSTED
 JV0213  ______________________________________________________________________
 JV0213  GEOID HEIGHT    -        -32.649 (meters)                     GEOID18
 JV0213  DYNAMIC HEIGHT  -        167.867 (meters)      550.74  (feet) COMP
 JV0213  MODELED GRAVITY -    980,112.2   (mgal)                       NAVD 88
 JV0213
 JV0213  VERT ORDER      -  SECOND    CLASS 0
 JV0213
 JV0213.The horizontal coordinates were scaled from a map and have
 JV0213.an estimated accuracy of +/- 6 seconds.
 JV0213
 JV0213.The orthometric height was determined by differential leveling and
 JV0213.adjusted by the NATIONAL GEODETIC SURVEY
 JV0213.in June 1991.
 JV0213
 JV0213.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0213.GEOID18 height accuracy estimate available here.
 JV0213
 JV0213.Click photographs - Photos may exist for this station.
 JV0213
 JV0213.The dynamic height is computed by dividing the NAVD 88
 JV0213.geopotential number by the normal gravity value computed on the
 JV0213.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0213.degrees latitude (g = 980.6199 gals.).
 JV0213
 JV0213.The modeled gravity was interpolated from observed gravity values.
 JV0213
 JV0213;                    North         East    Units  Estimated Accuracy
 JV0213;SPC MD       -   212,970.      451,880.      MT  (+/- 180 meters Scaled)
 JV0213
 JV0213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ801824(NAD 83)
 JV0213
 JV0213                          SUPERSEDED SURVEY CONTROL
 JV0213
 JV0213  NGVD 29 (11/26/84)  168.195  (m)          551.82   (f) ADJUSTED    2 0
 JV0213
 JV0213.Superseded values are not recommended for survey control.
 JV0213
 JV0213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0213.See file dsdata.pdf to determine how the superseded data were derived.
 JV0213
 JV0213_MARKER: DB = BENCH MARK DISK
 JV0213_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0213_STAMPING: G 99 1960
 JV0213_MARK LOGO: CGS
 JV0213_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0213+STABILITY: SURFACE MOTION
 JV0213
 JV0213  HISTORY     - Date     Condition        Report By
 JV0213  HISTORY     - 1960     MONUMENTED       CGS
 JV0213
 JV0213                          STATION DESCRIPTION
 JV0213
 JV0213'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0213'0.4 MI W FROM FOREST HILL.
 JV0213'ABOUT 0.45 MILE WEST ALONG STATE HIGHWAY 23 FROM THE STATE BANK
 JV0213'AT FOREST HILL, 43 1/2 FEET NORTH OF THE CENTER LINE OF HIGHWAY,
 JV0213'39 FEET EAST-SOUTHEAST OF THE SOUTHEAST CORNER OF FENCE AROUND
 JV0213'TRANSFORMER OF FOREST HILL POWER SUB STATION, 17 FEET WEST OF THE
 JV0213'CENTER LINE OF A PRIVATE DRIVE LEADING NORTH, 24 1/2 FEET NORTH OF
 JV0213'POWER LINE POLE 224982, 3 FEET WEST OF A FENCE LINE, 1 FOOT
 JV0213'WEST-SOUTHWEST OF A GUY CABLE ANCHOR, 2 FEET WEST-SOUTHWEST OF A
 JV0213'STEEL WITNESS POST, 3 1/2 FEET ABOVE THE LEVEL OF THE HIGHWAY,
 JV0213'AND SET IN TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0684 ***********************************************************************
 JW0684  DESIGNATION -  GA 1
 JW0684  PID         -  JW0684
 JW0684  STATE/COUNTY-  MD/GARRETT
 JW0684  COUNTRY     -  US
 JW0684  USGS QUAD   -  OAKLAND (2016)
 JW0684
 JW0684                         *CURRENT SURVEY CONTROL
 JW0684  ______________________________________________________________________
 JW0684* NAD 83(1986) POSITION- 39 25 52.     (N) 079 23 07.     (W)   SCALED
 JW0684* NAVD 88 ORTHO HEIGHT -   772.154 (meters)     2533.31  (feet) ADJUSTED
 JW0684  ______________________________________________________________________
 JW0684  GEOID HEIGHT    -        -31.167 (meters)                     GEOID18
 JW0684  DYNAMIC HEIGHT  -        771.633 (meters)     2531.60  (feet) COMP
 JW0684  MODELED GRAVITY -    979,925.7   (mgal)                       NAVD 88
 JW0684
 JW0684  VERT ORDER      -  SECOND    CLASS 0
 JW0684
 JW0684.The horizontal coordinates were scaled from a map and have
 JW0684.an estimated accuracy of +/- 6 seconds.
 JW0684
 JW0684.The orthometric height was determined by differential leveling and
 JW0684.adjusted by the NATIONAL GEODETIC SURVEY
 JW0684.in June 1991.
 JW0684
 JW0684.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0684.GEOID18 height accuracy estimate available here.
 JW0684
 JW0684.Click photographs - Photos may exist for this station.
 JW0684
 JW0684.The dynamic height is computed by dividing the NAVD 88
 JW0684.geopotential number by the normal gravity value computed on the
 JW0684.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0684.degrees latitude (g = 980.6199 gals.).
 JW0684
 JW0684.The modeled gravity was interpolated from observed gravity values.
 JW0684
 JW0684;                    North         East    Units  Estimated Accuracy
 JW0684;SPC MD       -   198,550.      194,660.      MT  (+/- 180 meters Scaled)
 JW0684
 JW0684_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD389658(NAD 83)
 JW0684
 JW0684                          SUPERSEDED SURVEY CONTROL
 JW0684
 JW0684  NGVD 29 (??/??/92)  772.29   (m)         2533.8    (f) COMPUTED    2 0
 JW0684
 JW0684.Superseded values are not recommended for survey control.
 JW0684
 JW0684.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0684.See file dsdata.pdf to determine how the superseded data were derived.
 JW0684
 JW0684_MARKER: DD = SURVEY DISK
 JW0684_SETTING: 0 = UNSPECIFIED SETTING
 JW0684_STAMPING: GA 1 1935
 JW0684_MARK LOGO: CGS+SS
 JW0684
 JW0684  HISTORY     - Date     Condition        Report By
 JW0684  HISTORY     - 1935     MONUMENTED       MDGS
 JW0684  HISTORY     - 20160923 MARK NOT FOUND   GEOCAC
 JW0684
 JW0684                          STATION DESCRIPTION
 JW0684
 JW0684'DESCRIBED BY MARYLAND GEODETIC SURVEY 1935
 JW0684'2 MI N FROM OAKLAND.
 JW0684'50 FEET EAST OF CENTER LINE OF STATE HIGHWAY 37.  ON THE MADGE
 JW0684'ENLOW WHITE PROPERTY, AT THE PROPERTY LINE BETWEEN THE WHITE AND
 JW0684'THE CHARLES DE BERRY ESTATE, 10 FEET EAST OF FENCE CORNER.
 JW0684
 JW0684                          STATION RECOVERY (2016)
 JW0684
 JW0684'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW0684'THE MARK WAS SEARCHED FOR AND NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0685 ***********************************************************************
 JW0685  DESIGNATION -  GA 1 RESET
 JW0685  PID         -  JW0685
 JW0685  STATE/COUNTY-  MD/GARRETT
 JW0685  COUNTRY     -  US
 JW0685  USGS QUAD   -  OAKLAND (2016)
 JW0685
 JW0685                         *CURRENT SURVEY CONTROL
 JW0685  ______________________________________________________________________
 JW0685* NAD 83(1986) POSITION- 39 25 52.68   (N) 079 23 07.27   (W)   HD_HELD1
 JW0685* NAVD 88 ORTHO HEIGHT -   772.214 (meters)     2533.51  (feet) ADJUSTED
 JW0685  ______________________________________________________________________
 JW0685  GEOID HEIGHT    -        -31.167 (meters)                     GEOID18
 JW0685  DYNAMIC HEIGHT  -        771.693 (meters)     2531.80  (feet) COMP
 JW0685  MODELED GRAVITY -    979,925.7   (mgal)                       NAVD 88
 JW0685
 JW0685  VERT ORDER      -  FIRST     CLASS II
 JW0685
 JW0685.The horizontal coordinates were determined by differentially corrected
 JW0685.hand held GPS observations or other comparable positioning techniques
 JW0685.and have an estimated accuracy of +/- 3 meters.
 JW0685
 JW0685.The orthometric height was determined by differential leveling and
 JW0685.adjusted by the NATIONAL GEODETIC SURVEY
 JW0685.in June 1991.
 JW0685
 JW0685.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0685.GEOID18 height accuracy estimate available here.
 JW0685
 JW0685.Click photographs - Photos may exist for this station.
 JW0685
 JW0685.The dynamic height is computed by dividing the NAVD 88
 JW0685.geopotential number by the normal gravity value computed on the
 JW0685.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0685.degrees latitude (g = 980.6199 gals.).
 JW0685
 JW0685.The modeled gravity was interpolated from observed gravity values.
 JW0685
 JW0685;                    North         East    Units  Estimated Accuracy
 JW0685;SPC MD       -   198,570.5     194,649.8     MT  (+/- 3 meters HH1 GPS) 
 JW0685
 JW0685_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3896565884(NAD 83)
 JW0685
 JW0685                          SUPERSEDED SURVEY CONTROL
 JW0685
 JW0685  NGVD 29 (??/??/??)  772.35   (m)         2534.0    (f) RESET       3  
 JW0685
 JW0685.Superseded values are not recommended for survey control.
 JW0685
 JW0685.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0685.See file dsdata.pdf to determine how the superseded data were derived.
 JW0685
 JW0685_MARKER: DD = SURVEY DISK
 JW0685_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0685_STAMPING: GA 1 1935 RESET 1948
 JW0685_MARK LOGO: CGS+SS
 JW0685_PROJECTION: PROJECTING 15 CENTIMETERS
 JW0685_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0685+STABILITY: SURFACE MOTION
 JW0685_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0685+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2016
 JW0685
 JW0685  HISTORY     - Date     Condition        Report By
 JW0685  HISTORY     - 1948     MONUMENTED       USGS
 JW0685  HISTORY     - 1983     GOOD             NGS
 JW0685  HISTORY     - 19901002 GOOD             NGS
 JW0685  HISTORY     - 20160923 GOOD             GEOCAC
 JW0685
 JW0685                          STATION DESCRIPTION
 JW0685
 JW0685'DESCRIBED BY US GEOLOGICAL SURVEY 1948
 JW0685'2 MI N FROM OAKLAND.
 JW0685'2.0 MILES NORTH ALONG U.S. HIGHWAY 219 FROM THE GARRETT COUNTY
 JW0685'HIGH SCHOOL AT OAKLAND, GARRETT COUNTY, NEAR THE PROPERTY LINE
 JW0685'BETWEEN THE WHITE AND THE CHARLES DE BERRY ESTATES, 53 FEET EAST
 JW0685'OF THE CENTER LINE OF THE OLD HIGHWAY, AT THE EDGE OF THE
 JW0685'RIGHT-OF-WAY OF THE NEW HIGHWAY, AND 5 FEET NORTH OF AN EAST-AND-WEST
 JW0685'FENCE.  A STATE SURVEY STANDARD DISK, STAMPED GA 1 1935 RESET
 JW0685'1948 AND SET IN THE TOP OF A CONCRETE POST.
 JW0685
 JW0685                          STATION RECOVERY (1983)
 JW0685
 JW0685'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0685'THE MARK IS 1.67 M ABOVE HIGHWAY.
 JW0685'RECOVERED IN GOOD CONDITION, NEW DESCRIPTION FOLLOWS.  3.4 KM (2.1 MI)
 JW0685'NORTHEAST ALONG U.S. HIGHWAY 219 FROM THE JUNCTION OF STATE HIGHWAY 39
 JW0685'IN OAKLAND TO THE MARK ON THE RIGHT, NEAR THE WEST CORNER OF A SINGLE
 JW0685'STORY FRAME HOUSE, 16.45 METERS (54.0 FT) SOUTHEAST OF THE CENTERLINE
 JW0685'OF THE HIGHWAY, 26.51 METERS (87.0 FT) WEST OF THE WEST CORNER OF THE
 JW0685'HOUSE, 3.53 METERS (11.6 FT) NORTH OF POWER POLE 6301.
 JW0685'THE MARK IS 0.30 METERS  NE FROM A WITNESS POST.
 JW0685
 JW0685                          STATION RECOVERY (1990)
 JW0685
 JW0685'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW0685'3.4 KM (2.1 MI) NORTHEASTERLY ALONG U.S. HIGHWAY 219 FROM THE JUNCTION
 JW0685'OF STATE HIGHWAY 39 IN OAKLAND, 26.4 M (86.6 FT) WEST OF THE WEST
 JW0685'CORNER OF A HOUSE, 22.7 M (74.5 FT) SOUTHWEST OF THE CENTER OF A
 JW0685'DRIVEWAY, 16.3 M (53.5 FT) SOUTHEAST OF THE HIGHWAY CENTERLINE, 3.5 M
 JW0685'(11.5 FT) NORTH OF A UTILITY POLE, 2.5 M (8.2 FT) NORTHEAST OF A
 JW0685'WITNESS POST, 2.5 M (8.2 FT) ABOVE THE LEVEL OF THE HIGHWAY, AND THE
 JW0685'MONUMENT PROJECTS 0.1 M (0.3 FT) ABOVE THE GROUND SURFACE.
 JW0685
 JW0685                          STATION RECOVERY (2016)
 JW0685
 JW0685'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW0685'THE WITNESS POST HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0682 ***********************************************************************
 JW0682  DESIGNATION -  GA 2
 JW0682  PID         -  JW0682
 JW0682  STATE/COUNTY-  MD/GARRETT
 JW0682  COUNTRY     -  US
 JW0682  USGS QUAD   -  OAKLAND (2016)
 JW0682
 JW0682                         *CURRENT SURVEY CONTROL
 JW0682  ______________________________________________________________________
 JW0682* NAD 83(1986) POSITION- 39 26 05.     (N) 079 22 59.     (W)   SCALED
 JW0682* NAVD 88 ORTHO HEIGHT -   773.892 (meters)     2539.01  (feet) ADJUSTED
 JW0682  ______________________________________________________________________
 JW0682  GEOID HEIGHT    -        -31.170 (meters)                     GEOID18
 JW0682  DYNAMIC HEIGHT  -        773.370 (meters)     2537.30  (feet) COMP
 JW0682  MODELED GRAVITY -    979,925.8   (mgal)                       NAVD 88
 JW0682
 JW0682  VERT ORDER      -  SECOND    CLASS 0
 JW0682
 JW0682.The horizontal coordinates were scaled from a map and have
 JW0682.an estimated accuracy of +/- 6 seconds.
 JW0682
 JW0682.The orthometric height was determined by differential leveling and
 JW0682.adjusted by the NATIONAL GEODETIC SURVEY
 JW0682.in June 1991.
 JW0682
 JW0682.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0682.GEOID18 height accuracy estimate available here.
 JW0682
 JW0682.Click photographs - Photos may exist for this station.
 JW0682
 JW0682.The dynamic height is computed by dividing the NAVD 88
 JW0682.geopotential number by the normal gravity value computed on the
 JW0682.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0682.degrees latitude (g = 980.6199 gals.).
 JW0682
 JW0682.The modeled gravity was interpolated from observed gravity values.
 JW0682
 JW0682;                    North         East    Units  Estimated Accuracy
 JW0682;SPC MD       -   198,950.      194,860.      MT  (+/- 180 meters Scaled)
 JW0682
 JW0682_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD391662(NAD 83)
 JW0682
 JW0682                          SUPERSEDED SURVEY CONTROL
 JW0682
 JW0682  NGVD 29 (??/??/92)  774.03   (m)         2539.5    (f) COMPUTED    2 0
 JW0682
 JW0682.Superseded values are not recommended for survey control.
 JW0682
 JW0682.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0682.See file dsdata.pdf to determine how the superseded data were derived.
 JW0682
 JW0682_MARKER: DD = SURVEY DISK
 JW0682_SETTING: 0 = UNSPECIFIED SETTING
 JW0682_STAMPING: GA 2 1935
 JW0682_MARK LOGO: CGS+SS
 JW0682
 JW0682  HISTORY     - Date     Condition        Report By
 JW0682  HISTORY     - 1935     MONUMENTED       MDGS
 JW0682  HISTORY     - 20160923 MARK NOT FOUND   GEOCAC
 JW0682
 JW0682                          STATION DESCRIPTION
 JW0682
 JW0682'DESCRIBED BY MARYLAND GEODETIC SURVEY 1935
 JW0682'2.2 MI N FROM OAKLAND.
 JW0682'26 FEET EAST OF CENTER LINE OF STATE HIGHWAY 37.  AT THE PROPERTY
 JW0682'LINE BETWEEN MADGE ENLOW WHITE AND HENRY C. HOSTETTER ESTATE.
 JW0682
 JW0682                          STATION RECOVERY (2016)
 JW0682
 JW0682'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW0682'THE MARK WAS SEARCHED FOR AND NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0683 ***********************************************************************
 JW0683  DESIGNATION -  GA 2 RESET
 JW0683  PID         -  JW0683
 JW0683  STATE/COUNTY-  MD/GARRETT
 JW0683  COUNTRY     -  US
 JW0683  USGS QUAD   -  OAKLAND (2016)
 JW0683
 JW0683                         *CURRENT SURVEY CONTROL
 JW0683  ______________________________________________________________________
 JW0683* NAD 83(1986) POSITION- 39 26 03.24   (N) 079 22 59.13   (W)   HD_HELD1
 JW0683* NAVD 88 ORTHO HEIGHT -   775.78  (meters)     2545.2   (feet) RESET
 JW0683  ______________________________________________________________________
 JW0683  GEOID HEIGHT    -        -31.170 (meters)                     GEOID18
 JW0683  VERT ORDER      -  THIRD
 JW0683
 JW0683.The horizontal coordinates were determined by differentially corrected
 JW0683.hand held GPS observations or other comparable positioning techniques
 JW0683.and have an estimated accuracy of +/- 3 meters.
 JW0683
 JW0683.The orthometric height was computed from unverified reset data.
 JW0683
 JW0683.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0683.GEOID18 height accuracy estimate available here.
 JW0683
 JW0683.Click photographs - Photos may exist for this station.
 JW0683
 JW0683;                    North         East    Units  Estimated Accuracy
 JW0683;SPC MD       -   198,891.0     194,853.0     MT  (+/- 3 meters HH1 GPS) 
 JW0683
 JW0683_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3915466213(NAD 83)
 JW0683
 JW0683                          SUPERSEDED SURVEY CONTROL
 JW0683
 JW0683.No superseded survey control is available for this station.
 JW0683
 JW0683_STAMPING: GA 2 1935 RESET 1948
 JW0683_MARK LOGO: CGS+SS
 JW0683
 JW0683  HISTORY     - Date     Condition        Report By
 JW0683  HISTORY     - 1948     MONUMENTED       USGS
 JW0683  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0683  HISTORY     - 20160923 MARK NOT FOUND   GEOCAC
 JW0683
 JW0683                          STATION DESCRIPTION
 JW0683
 JW0683'DESCRIBED BY US GEOLOGICAL SURVEY 1948
 JW0683'2.2 MI N FROM OAKLAND.
 JW0683'2.2 MILES NORTH ALONG U.S. HIGHWAY 219 FROM THE GARRETT COUNTY
 JW0683'HIGH SCHOOL AT OAKLAND, GARRETT COUNTY, 76 FEET EAST OF THE CENTER
 JW0683'LINE OF THE OLD HIGHWAY, AT THE EDGE OF THE RIGHT-OF-WAY OF THE
 JW0683'NEW HIGHWAY, 33 FEET NORTH AND 40 FEET WEST OF THE NORTHEAST
 JW0683'CORNER OF THE H.B. LEWIS FARMHOUSE, AND 7.5 FEET NORTH OF AN
 JW0683'EAST-AND-WEST FENCE.  A STATE SURVEY STANDARD DISK, STAMPED GA 2
 JW0683'1935 RESET 1948 AND SET IN THE TOP OF A CONCRETE POST.
 JW0683
 JW0683                          STATION RECOVERY (1983)
 JW0683
 JW0683'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0683'NOT RECOVERED, THE FARM HOUSE HAS BEEN TORN DOWN AND NEW HOUSES ARE AT
 JW0683'THIS LOCATION, NO SIGNS OF THE MARK COULD BE FOUND.
 JW0683
 JW0683                          STATION RECOVERY (2016)
 JW0683
 JW0683'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW0683'THE MARK WAS SEARCHED FOR AND NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0681 ***********************************************************************
 JW0681  DESIGNATION -  GA 3
 JW0681  PID         -  JW0681
 JW0681  STATE/COUNTY-  MD/GARRETT
 JW0681  COUNTRY     -  US
 JW0681  USGS QUAD   -  DEER PARK (2016)
 JW0681
 JW0681                         *CURRENT SURVEY CONTROL
 JW0681  ______________________________________________________________________
 JW0681* NAD 83(1986) POSITION- 39 26 58.99   (N) 079 22 30.95   (W)   HD_HELD1
 JW0681* NAVD 88 ORTHO HEIGHT -   789.734 (meters)     2590.99  (feet) ADJUSTED
 JW0681  ______________________________________________________________________
 JW0681  GEOID HEIGHT    -        -31.182 (meters)                     GEOID18
 JW0681  DYNAMIC HEIGHT  -        789.202 (meters)     2589.24  (feet) COMP
 JW0681  MODELED GRAVITY -    979,926.0   (mgal)                       NAVD 88
 JW0681
 JW0681  VERT ORDER      -  SECOND    CLASS 0
 JW0681
 JW0681.The horizontal coordinates were determined by differentially corrected
 JW0681.hand held GPS observations or other comparable positioning techniques
 JW0681.and have an estimated accuracy of +/- 3 meters.
 JW0681
 JW0681.The orthometric height was determined by differential leveling and
 JW0681.adjusted by the NATIONAL GEODETIC SURVEY
 JW0681.in June 1991.
 JW0681
 JW0681.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0681.GEOID18 height accuracy estimate available here.
 JW0681
 JW0681.Click photographs - Photos may exist for this station.
 JW0681
 JW0681.The dynamic height is computed by dividing the NAVD 88
 JW0681.geopotential number by the normal gravity value computed on the
 JW0681.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0681.degrees latitude (g = 980.6199 gals.).
 JW0681
 JW0681.The modeled gravity was interpolated from observed gravity values.
 JW0681
 JW0681;                    North         East    Units  Estimated Accuracy
 JW0681;SPC MD       -   200,592.2     195,571.4     MT  (+/- 3 meters HH1 GPS) 
 JW0681
 JW0681_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3979767943(NAD 83)
 JW0681
 JW0681                          SUPERSEDED SURVEY CONTROL
 JW0681
 JW0681  NGVD 29 (??/??/92)  789.873  (m)         2591.44   (f) ADJ UNCH    2 0
 JW0681
 JW0681.Superseded values are not recommended for survey control.
 JW0681
 JW0681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0681.See file dsdata.pdf to determine how the superseded data were derived.
 JW0681
 JW0681_MARKER: DD = SURVEY DISK
 JW0681_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0681_STAMPING: GA 3 1935
 JW0681_MARK LOGO: CGS+SS
 JW0681_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0681+STABILITY: SURFACE MOTION
 JW0681
 JW0681  HISTORY     - Date     Condition        Report By
 JW0681  HISTORY     - 1935     MONUMENTED       MDGS
 JW0681  HISTORY     - 1935     GOOD             CGS
 JW0681  HISTORY     - 19901002 MARK NOT FOUND   NGS
 JW0681
 JW0681                          STATION DESCRIPTION
 JW0681
 JW0681'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0681'3.4 MI N FROM OAKLAND.
 JW0681'3.4 MILES NORTH ALONG U.S. HIGHWAY 219 FROM THE GARRETT COUNTY
 JW0681'HIGH SCHOOL AT OAKLAND, GARRETT COUNTY, 142.4 FEET NORTH OF MILEAGE
 JW0681'3.5, 20 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, AND ON THE
 JW0681'RYAN PROPERTY.  A STATE SURVEY STANDARD DISK, STAMPED GA 3 1935
 JW0681'AND SET IN THE TOP OF A CONCRETE POST.
 JW0681
 JW0681                          STATION RECOVERY (1990)
 JW0681
 JW0681'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW0681'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0679 ***********************************************************************
 JW0679  DESIGNATION -  GA 4
 JW0679  PID         -  JW0679
 JW0679  STATE/COUNTY-  MD/GARRETT
 JW0679  COUNTRY     -  US
 JW0679  USGS QUAD   -  DEER PARK (2016)
 JW0679
 JW0679                         *CURRENT SURVEY CONTROL
 JW0679  ______________________________________________________________________
 JW0679* NAD 83(1986) POSITION- 39 27 04.63   (N) 079 22 27.85   (W)   HD_HELD1
 JW0679* NAVD 88 ORTHO HEIGHT -   787.816 (meters)     2584.69  (feet) ADJUSTED
 JW0679  ______________________________________________________________________
 JW0679  GEOID HEIGHT    -        -31.183 (meters)                     GEOID18
 JW0679  DYNAMIC HEIGHT  -        787.285 (meters)     2582.95  (feet) COMP
 JW0679  MODELED GRAVITY -    979,926.0   (mgal)                       NAVD 88
 JW0679
 JW0679  VERT ORDER      -  SECOND    CLASS 0
 JW0679
 JW0679.The horizontal coordinates were determined by differentially corrected
 JW0679.hand held GPS observations or other comparable positioning techniques
 JW0679.and have an estimated accuracy of +/- 3 meters.
 JW0679
 JW0679.The orthometric height was determined by differential leveling and
 JW0679.adjusted by the NATIONAL GEODETIC SURVEY
 JW0679.in June 1991.
 JW0679
 JW0679.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0679.GEOID18 height accuracy estimate available here.
 JW0679
 JW0679.Click photographs - Photos may exist for this station.
 JW0679
 JW0679.The dynamic height is computed by dividing the NAVD 88
 JW0679.geopotential number by the normal gravity value computed on the
 JW0679.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0679.degrees latitude (g = 980.6199 gals.).
 JW0679
 JW0679.The modeled gravity was interpolated from observed gravity values.
 JW0679
 JW0679;                    North         East    Units  Estimated Accuracy
 JW0679;SPC MD       -   200,764.2     195,650.0     MT  (+/- 3 meters HH1 GPS) 
 JW0679
 JW0679_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD3986868119(NAD 83)
 JW0679
 JW0679                          SUPERSEDED SURVEY CONTROL
 JW0679
 JW0679  NGVD 29 (??/??/92)  787.955  (m)         2585.15   (f) ADJ UNCH    2 0
 JW0679
 JW0679.Superseded values are not recommended for survey control.
 JW0679
 JW0679.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0679.See file dsdata.pdf to determine how the superseded data were derived.
 JW0679
 JW0679_MARKER: DD = SURVEY DISK
 JW0679_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW0679_STAMPING: GA 4 1935
 JW0679_MARK LOGO: CGS+SS
 JW0679_PROJECTION: PROJECTING 13 CENTIMETERS
 JW0679_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0679+STABILITY: SURFACE MOTION
 JW0679_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0679+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2016
 JW0679
 JW0679  HISTORY     - Date     Condition        Report By
 JW0679  HISTORY     - 1935     MONUMENTED       MDGS
 JW0679  HISTORY     - 1935     GOOD             CGS
 JW0679  HISTORY     - 19900928 GOOD             NGS
 JW0679  HISTORY     - 20090725 GOOD             GEOCAC
 JW0679  HISTORY     - 20160923 GOOD             GEOCAC
 JW0679
 JW0679                          STATION DESCRIPTION
 JW0679
 JW0679'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0679'3.5 MI N FROM OAKLAND.
 JW0679'3.5 MILES NORTH ALONG U.S. HIGHWAY 219 FROM THE GARRETT COUNTY
 JW0679'HIGH SCHOOL AT OAKLAND, GARRETT COUNTY, 190 FEET NORTH OF THE
 JW0679'CENTER LINE OF A ROAD LEADING TO MOUNTAIN LAKE PARK, 49 FEET
 JW0679'WEST OF THE CENTER LINE OF THE HIGHWAY, AT THE FERNDALE BAPTIST
 JW0679'CHURCH, 12 FEET SOUTH OF THE CORNER, AND IN THE CHURCHYARD.  A
 JW0679'STATE SURVEY STANDARD DISK, STAMPED GA 4 1935 AND SET IN THE TOP
 JW0679'OF A CONCRETE POST.
 JW0679
 JW0679                          STATION RECOVERY (1990)
 JW0679
 JW0679'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW0679'5.8 KM (3.6 MI) NORTHEASTERLY ALONG U.S. HIGHWAY 219 FROM THE JUNCTION
 JW0679'OF STATE HIGHWAY 39 IN OAKLAND, 35.6 M (116.8 FT) NORTHEAST OF THE
 JW0679'CENTER OF MT. NEBO ROAD, 18.4 M (60.4 FT) NORTHWEST OF THE HIGHWAY
 JW0679'CENTERLINE, 7.3 M (24.0 FT) NORTHWEST OF A FENCE, 2.2 M (7.2 FT)
 JW0679'SOUTH OF THE SOUTH CORNER OF THE FERNDALE CHURCH, 1.6 M (5.2 FT) ABOVE
 JW0679'THE LEVEL OF THE HIGHWAY, AND THE MONUMENT PROJECTS 0.1 M (0.3 FT)
 JW0679'ABOVE THE GROUND SURFACE.
 JW0679
 JW0679                          STATION RECOVERY (2009)
 JW0679
 JW0679'RECOVERY NOTE BY GEOCACHING 2009 (BP)
 JW0679'RECOVERED IN GOOD CONDITION.
 JW0679
 JW0679                          STATION RECOVERY (2016)
 JW0679
 JW0679'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW0679'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0678 ***********************************************************************
 JW0678  DESIGNATION -  GA 5
 JW0678  PID         -  JW0678
 JW0678  STATE/COUNTY-  MD/GARRETT
 JW0678  COUNTRY     -  US
 JW0678  USGS QUAD   -  DEER PARK (2016)
 JW0678
 JW0678                         *CURRENT SURVEY CONTROL
 JW0678  ______________________________________________________________________
 JW0678* NAD 83(1986) POSITION- 39 28 05.     (N) 079 21 53.     (W)   SCALED
 JW0678* NAVD 88 ORTHO HEIGHT -   831.115 (meters)     2726.75  (feet) ADJUSTED
 JW0678  ______________________________________________________________________
 JW0678  GEOID HEIGHT    -        -31.195 (meters)                     GEOID18
 JW0678  DYNAMIC HEIGHT  -        830.557 (meters)     2724.92  (feet) COMP
 JW0678  MODELED GRAVITY -    979,926.3   (mgal)                       NAVD 88
 JW0678
 JW0678  VERT ORDER      -  SECOND    CLASS 0
 JW0678
 JW0678.The horizontal coordinates were scaled from a map and have
 JW0678.an estimated accuracy of +/- 6 seconds.
 JW0678
 JW0678.The orthometric height was determined by differential leveling and
 JW0678.adjusted by the NATIONAL GEODETIC SURVEY
 JW0678.in June 1991.
 JW0678
 JW0678.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0678.GEOID18 height accuracy estimate available here.
 JW0678
 JW0678.Click photographs - Photos may exist for this station.
 JW0678
 JW0678.The dynamic height is computed by dividing the NAVD 88
 JW0678.geopotential number by the normal gravity value computed on the
 JW0678.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0678.degrees latitude (g = 980.6199 gals.).
 JW0678
 JW0678.The modeled gravity was interpolated from observed gravity values.
 JW0678
 JW0678;                    North         East    Units  Estimated Accuracy
 JW0678;SPC MD       -   202,600.      196,530.      MT  (+/- 180 meters Scaled)
 JW0678
 JW0678_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD406699(NAD 83)
 JW0678
 JW0678                          SUPERSEDED SURVEY CONTROL
 JW0678
 JW0678  NGVD 29 (??/??/92)  831.26   (m)         2727.2    (f) COMPUTED    2 0
 JW0678
 JW0678.Superseded values are not recommended for survey control.
 JW0678
 JW0678.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0678.See file dsdata.pdf to determine how the superseded data were derived.
 JW0678
 JW0678_MARKER: DD = SURVEY DISK
 JW0678_SETTING: 0 = UNSPECIFIED SETTING
 JW0678_STAMPING: GA 5 1935
 JW0678_MARK LOGO: CGS+SS
 JW0678
 JW0678  HISTORY     - Date     Condition        Report By
 JW0678  HISTORY     - 1935     MONUMENTED       MDGS
 JW0678  HISTORY     - 20160923 MARK NOT FOUND   GEOCAC
 JW0678
 JW0678                          STATION DESCRIPTION
 JW0678
 JW0678'DESCRIBED BY MARYLAND GEODETIC SURVEY 1935
 JW0678'4.8 MI N FROM OAKLAND.
 JW0678'100 FEET SOUTHWEST OF HIGHWAY MILEPOST 5.0.30 FEET NORTHEAST OF
 JW0678'TELEPHONE POLE.  16 FEET SOUTHEAST OF CENTER LINE OF STATE HIGHWAY
 JW0678'37.
 JW0678
 JW0678                          STATION RECOVERY (2016)
 JW0678
 JW0678'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW0678'THE MARK WAS SEARCHED FOR AND NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8072 ***********************************************************************
 AI8072  DESIGNATION -  GAFFNEY
 AI8072  PID         -  AI8072
 AI8072  STATE/COUNTY-  MD/C OF BALTIMORE
 AI8072  COUNTRY     -  US
 AI8072  USGS QUAD   -  BALTIMORE EAST (2016)
 AI8072
 AI8072                         *CURRENT SURVEY CONTROL
 AI8072  ______________________________________________________________________
 AI8072* NAD 83(2011) POSITION- 39 16 37.05704(N) 076 34 26.91532(W)   ADJUSTED
 AI8072* NAD 83(2011) ELLIP HT-   -30.870 (meters)        (06/27/12)   ADJUSTED
 AI8072* NAD 83(2011) EPOCH   -  2010.00
 AI8072* NAVD 88 ORTHO HEIGHT -     2.0   (meters)        7.    (feet) GPS OBS
 AI8072  ______________________________________________________________________
 AI8072  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8072  GEOID HEIGHT    -        -32.830 (meters)                     GEOID99
 AI8072  GEOID HEIGHT    -        -32.844 (meters)                     GEOID18
 AI8072  NAD 83(2011) X  -  1,147,907.716 (meters)                     COMP
 AI8072  NAD 83(2011) Y  - -4,808,784.900 (meters)                     COMP
 AI8072  NAD 83(2011) Z  -  4,016,146.001 (meters)                     COMP
 AI8072  LAPLACE CORR    -         -4.30  (seconds)                    DEFLEC18
 AI8072
 AI8072  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8072  Standards:
 AI8072         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8072            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8072  -------------------------------------------------------------------
 AI8072  NETWORK    0.90   1.25           0.40   0.33   0.64     -0.10501140
 AI8072  -------------------------------------------------------------------
 AI8072  Click here for local accuracies and other accuracy information.
 AI8072
 AI8072.The horizontal coordinates were established by GPS observations
 AI8072.and adjusted by the National Geodetic Survey in June 2012.
 AI8072
 AI8072.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8072.been affixed to the stable North American tectonic plate. See 
 AI8072.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8072
 AI8072.The horizontal coordinates are valid at the epoch date displayed above
 AI8072.which is a decimal equivalence of Year/Month/Day.
 AI8072
 AI8072.The orthometric height was determined by GPS observations and a
 AI8072.high-resolution geoid model.
 AI8072
 AI8072.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8072.GEOID18 height accuracy estimate available here.
 AI8072
 AI8072.Click photographs - Photos may exist for this station.
 AI8072
 AI8072.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8072
 AI8072.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8072
 AI8072.The ellipsoidal height was determined by GPS observations
 AI8072.and is referenced to NAD 83.
 AI8072
 AI8072. The following values were computed from the NAD 83(2011) position.
 AI8072
 AI8072;                    North         East     Units Scale Factor Converg.
 AI8072;SPC MD       -   178,838.338   436,745.120   MT  0.99997431   +0 16 02.2
 AI8072;SPC MD       -   586,738.78  1,432,887.95   sFT  0.99997431   +0 16 02.2
 AI8072;UTM  18      - 4,348,692.852   364,221.751   MT  0.99982699   -0 59 48.1
 AI8072
 AI8072!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8072!SPC MD       -   1.00000484  x   0.99997431  =   0.99997915
 AI8072!UTM  18      -   1.00000484  x   0.99982699  =   0.99983183
 AI8072
 AI8072_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6422148692(NAD 83)
 AI8072
 AI8072                          SUPERSEDED SURVEY CONTROL
 AI8072
 AI8072  NAD 83(2007)-  39 16 37.05725(N)    076 34 26.91607(W) AD(2002.00) 0
 AI8072  ELLIP H (02/10/07)  -30.855  (m)                       GP(2002.00)    
 AI8072  ELLIP H (08/30/02)  -30.843  (m)                       GP(       ) 4 2
 AI8072  NAD 83(1991)-  39 16 37.05718(N)    076 34 26.91560(W) AD(       ) 1
 AI8072  ELLIP H (10/26/00)  -30.931  (m)                       GP(       ) 4 1
 AI8072
 AI8072.Superseded values are not recommended for survey control.
 AI8072
 AI8072.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8072.See file dsdata.pdf to determine how the superseded data were derived.
 AI8072
 AI8072_MARKER: DE = TRAVERSE STATION DISK
 AI8072_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 AI8072_STAMPING: CORPS OF ENGINEERS SURVEY MARK
 AI8072_MARK LOGO: USACE
 AI8072_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI8072_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AI8072_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8072+SATELLITE: SATELLITE OBSERVATIONS - November 11, 2014
 AI8072
 AI8072  HISTORY     - Date     Condition        Report By
 AI8072  HISTORY     - 1999     MONUMENTED       MD0050
 AI8072  HISTORY     - 20141111 GOOD             RKK
 AI8072
 AI8072                          STATION DESCRIPTION
 AI8072
 AI8072'DESCRIBED BY CITY OF BALTIMORE MARYLAND 1999
 AI8072'THE STATION IS LOCATED 2.1 MILES (3.4 KM) S.E.  OF THE INNER HARBOR OF
 AI8072'BALTIMORE CITY.  THE POINT IS A CORPS OF ENGINEERS,US ARMY 3.5 INCH
 AI8072'METAL DISC IN CONCRETE WALL AT THE BULKHEAD 300 FT.  (91.4 M) SOUTH OF
 AI8072'BOSTON STREET AT POTOMAC STREET IN A PARK KNOWN AS CANTON WATERFRONT
 AI8072'PARK (KOREAN WAR MEMORIAL) .IT IS 300 FT.  (91.4 M) WEST OF BOAT RAMP,
 AI8072'LOCATED ON A 3 FT.  (0.9 M) HIGH CONCRETE WALL, 22.22 FT.  (6.77 M)
 AI8072'S.E.  FROM THE NORTHWEST CORNER OF SAID WALL, 2.98 FT. (0.91 M) N.E.
 AI8072'FROM SOUTHWESTERN CORNER OF SAID WALL, AND 31.  31 FT.  (9.4 M) N.W.
 AI8072'FROM A SIGN LOCATED ON WALL.
 AI8072
 AI8072                          STATION RECOVERY (2014)
 AI8072
 AI8072'RECOVERY NOTE BY RK&K 2014 (MC)
 AI8072'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9252 ***********************************************************************
 AA9252  SACS        -  This is a Secondary Airport Control Station.
 AA9252  DESIGNATION -  GAI A
 AA9252  PID         -  AA9252
 AA9252  STATE/COUNTY-  MD/MONTGOMERY
 AA9252  COUNTRY     -  US
 AA9252  USGS QUAD   -  GAITHERSBURG (2016)
 AA9252
 AA9252                         *CURRENT SURVEY CONTROL
 AA9252  ______________________________________________________________________
 AA9252* NAD 83(2011) POSITION- 39 09 55.33022(N) 077 09 42.89011(W)   ADJUSTED
 AA9252* NAD 83(2011) ELLIP HT-   129.522 (meters)        (06/27/12)   ADJUSTED
 AA9252* NAD 83(2011) EPOCH   -  2010.00
 AA9252* NAVD 88 ORTHO HEIGHT -   161.26  (meters)      529.1   (feet) GPS OBS
 AA9252  ______________________________________________________________________
 AA9252  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AA9252  GEOID HEIGHT    -        -31.742 (meters)                     GEOID96
 AA9252  GEOID HEIGHT    -        -31.743 (meters)                     GEOID18
 AA9252  NAD 83(2011) X  -  1,100,285.316 (meters)                     COMP
 AA9252  NAD 83(2011) Y  - -4,828,066.514 (meters)                     COMP
 AA9252  NAD 83(2011) Z  -  4,006,649.626 (meters)                     COMP
 AA9252  LAPLACE CORR    -          0.11  (seconds)                    DEFLEC18
 AA9252
 AA9252  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9252  Standards:
 AA9252         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9252            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9252  -------------------------------------------------------------------
 AA9252  NETWORK    1.31   2.23           0.58   0.48   1.14     -0.02753941
 AA9252  -------------------------------------------------------------------
 AA9252  Click here for local accuracies and other accuracy information.
 AA9252
 AA9252.This mark is at Montgomery Co Airpark  (GAI)
 AA9252
 AA9252.The horizontal coordinates were established by GPS observations
 AA9252.and adjusted by the National Geodetic Survey in June 2012.
 AA9252
 AA9252.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9252.been affixed to the stable North American tectonic plate. See 
 AA9252.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9252
 AA9252.The horizontal coordinates are valid at the epoch date displayed above
 AA9252.which is a decimal equivalence of Year/Month/Day.
 AA9252
 AA9252.The orthometric height was determined by GPS observations and a
 AA9252.high-resolution geoid model.
 AA9252
 AA9252.GPS derived orthometric heights for airport stations designated as
 AA9252.PACS or SACS are published to 2 decimal places.  This maintains
 AA9252.centimeter relative accuracy between the PACS and SACS.  It does
 AA9252.not indicate centimeter accuracy relative to other marks which are
 AA9252.part of the published vertical control network.
 AA9252
 AA9252.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9252.GEOID18 height accuracy estimate available here.
 AA9252
 AA9252.Click photographs - Photos may exist for this station.
 AA9252
 AA9252.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9252
 AA9252.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9252
 AA9252.The ellipsoidal height was determined by GPS observations
 AA9252.and is referenced to NAD 83.
 AA9252
 AA9252. The following values were computed from the NAD 83(2011) position.
 AA9252
 AA9252;                    North         East     Units Scale Factor Converg.
 AA9252;SPC MD       -   166,376.658   386,007.218   MT  0.99996259   -0 06 05.8
 AA9252;SPC MD       -   545,854.09  1,266,425.35   sFT  0.99996259   -0 06 05.8
 AA9252;UTM  18      - 4,337,354.138   313,223.566   MT  1.00002956   -1 21 56.8
 AA9252
 AA9252!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9252!SPC MD       -   0.99997968  x   0.99996259  =   0.99994227
 AA9252!UTM  18      -   0.99997968  x   1.00002956  =   1.00000924
 AA9252
 AA9252_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1322337354(NAD 83)
 AA9252
 AA9252                          SUPERSEDED SURVEY CONTROL
 AA9252
 AA9252  NAD 83(2007)-  39 09 55.33008(N)    077 09 42.89120(W) AD(2002.00) 0
 AA9252  ELLIP H (02/10/07)  129.571  (m)                       GP(2002.00)    
 AA9252  ELLIP H (08/19/02)  129.554  (m)                       GP(       ) 4 2
 AA9252  NAD 83(1991)-  39 09 55.33028(N)    077 09 42.89144(W) AD(       ) 1
 AA9252  ELLIP H (04/02/98)  129.571  (m)                       GP(       ) 4 2
 AA9252  NAD 83(1993)-  39 09 55.33024(N)    077 09 42.89141(W) AD(       ) 1
 AA9252  ELLIP H (11/30/95)  129.575  (m)                       GP(       ) 4 2
 AA9252  NAVD 88 (11/30/95)  161.26   (m)  GEOID93  model used  GPS OBS        
 AA9252
 AA9252.Superseded values are not recommended for survey control.
 AA9252
 AA9252.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9252.See file dsdata.pdf to determine how the superseded data were derived.
 AA9252
 AA9252_MARKER: DD = SURVEY DISK
 AA9252_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA9252_STAMPING: GAI A 1989
 AA9252_MARK LOGO: NOS
 AA9252_PROJECTION: FLUSH
 AA9252_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9252_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA9252+STABILITY: SURFACE MOTION
 AA9252_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9252+SATELLITE: SATELLITE OBSERVATIONS - November 01, 2003
 AA9252
 AA9252  HISTORY     - Date     Condition        Report By
 AA9252  HISTORY     - 1989     MONUMENTED       NOS
 AA9252  HISTORY     - 19940817 GOOD             NOS
 AA9252  HISTORY     - 20031101 GOOD             NGS
 AA9252
 AA9252                          STATION DESCRIPTION
 AA9252
 AA9252'DESCRIBED BY NATIONAL OCEAN SERVICE 1989 (HSK)
 AA9252'THE STATION IS LOCATED AT MONTGOMERY COUNTY AIRPARK WEST-NORTHWEST OF
 AA9252'RUNWAY END 32, AND EAST-NORTHEAST OF A WINDSOCK.
 AA9252'
 AA9252'THE STATION IS LOCATED WITHIN THE SEGMENTED CIRCLE AROUND THE
 AA9252'WINDSOCK, 45 FT (13.7 M) EAST-NORTHEAST OF THE WINDSOCK, 59.4 FT
 AA9252'(18.1 M) NORTHWEST OF THE SOUTHERN L AND 111.8 FT (34.1 M) WEST OF THE
 AA9252'SECOND RWY LT NORTHWEST OF END 32.
 AA9252'
 AA9252'THE STATION IS A STANDARD NOS DISK STAMPED GAI A 1989 AND SET IN THE
 AA9252'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 AA9252
 AA9252                          STATION RECOVERY (1994)
 AA9252
 AA9252'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1994 (RAH)
 AA9252'THE STATION IS LOCATED AT THE MONTGOMERY COUNTY AIRPARK WEST-NORTHWEST
 AA9252'OF RUNWAY END 32 AND EAST-NORTHEAST OF A WINDSOCK. FOR ACCESS TO THE
 AA9252'AIRPORT AND THE STATION CONTACT MR. DOUGLAS MCNEELY, AIRPORT MANAGER,
 AA9252'MONTGOMERY COUNTY AIRPARK, 7940 AIRPARK ROAD, GAITHERSBURG, MD 20879,
 AA9252'PHONE (301) 963-7100.
 AA9252'
 AA9252'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 124 (WOODFIELD
 AA9252'ROAD) AND AIRPARK ROAD IN NORTH GAITHERSBURG, PROCEED SOUTHWESTERLY
 AA9252'ALONG AIRPARK ROAD FOR 0.65 MI (1.05 KM) TO THE AIRPORT FUEL GATE EAST
 AA9252'OF THE AIRPORT TERMINAL, PROCEED THROUGH FUEL GATE AND BEAR WEST FOR
 AA9252'0.1 MI (0.2 KM) TO PRIMARY TAXIWAY, TURN LEFT AND GO SOUTH ON TAXIWAY
 AA9252'FOR 0.6 MI (1.0 KM) TO RUNWAY END 32, GO ACROSS THE RUNWAY END AND
 AA9252'BEAR RIGHT NORTH FOR 0.5 MI (0.8 KM) TO THE WINDSOCK AND THE STATION.
 AA9252'
 AA9252'THE STATION IS LOCATED WITHIN THE SEGMENTED CIRCLE AROUND THE
 AA9252'WINDSOCK, 45.0 FT (13.7 M) EAST-NORTHEAST OF THE WINDSOCK, 59.4 FT
 AA9252'(18.1 M) NORTHWEST OF THE SOUTHERN L, AND 111.8 FT (34.1 M) WEST OF
 AA9252'THE SECOND RUNWAY LIGHT NORTHWEST OF THE END OF RUNWAY 32.  DESCRIBED
 AA9252'BY RAZ.  THIS IS A SECONDARY AIRPORT CONTROL STATION.
 AA9252
 AA9252                          STATION RECOVERY (2003)
 AA9252
 AA9252'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2003 (GFS)
 AA9252'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9253 ***********************************************************************
 AA9253  SACS        -  This is a Secondary Airport Control Station.
 AA9253  DESIGNATION -  GAI B
 AA9253  PID         -  AA9253
 AA9253  STATE/COUNTY-  MD/MONTGOMERY
 AA9253  COUNTRY     -  US
 AA9253  USGS QUAD   -  GAITHERSBURG (2016)
 AA9253
 AA9253                         *CURRENT SURVEY CONTROL
 AA9253  ______________________________________________________________________
 AA9253* NAD 83(2011) POSITION- 39 10 15.09640(N) 077 10 10.57609(W)   ADJUSTED
 AA9253* NAD 83(2011) ELLIP HT-   117.854 (meters)        (06/27/12)   ADJUSTED
 AA9253* NAD 83(2011) EPOCH   -  2010.00
 AA9253* NAVD 88 ORTHO HEIGHT -   149.60  (meters)      490.8   (feet) GPS OBS
 AA9253  ______________________________________________________________________
 AA9253  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AA9253  GEOID HEIGHT    -        -31.746 (meters)                     GEOID96
 AA9253  GEOID HEIGHT    -        -31.748 (meters)                     GEOID18
 AA9253  NAD 83(2011) X  -  1,099,549.752 (meters)                     COMP
 AA9253  NAD 83(2011) Y  - -4,827,829.945 (meters)                     COMP
 AA9253  NAD 83(2011) Z  -  4,007,114.855 (meters)                     COMP
 AA9253  LAPLACE CORR    -          0.55  (seconds)                    DEFLEC18
 AA9253
 AA9253  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9253  Standards:
 AA9253         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9253            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9253  -------------------------------------------------------------------
 AA9253  NETWORK    1.30   2.23           0.58   0.47   1.14      0.01413625
 AA9253  -------------------------------------------------------------------
 AA9253  Click here for local accuracies and other accuracy information.
 AA9253
 AA9253.This mark is at Montgomery Co Airpark  (GAI)
 AA9253
 AA9253.The horizontal coordinates were established by GPS observations
 AA9253.and adjusted by the National Geodetic Survey in June 2012.
 AA9253
 AA9253.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9253.been affixed to the stable North American tectonic plate. See 
 AA9253.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9253
 AA9253.The horizontal coordinates are valid at the epoch date displayed above
 AA9253.which is a decimal equivalence of Year/Month/Day.
 AA9253
 AA9253.The orthometric height was determined by GPS observations and a
 AA9253.high-resolution geoid model.
 AA9253
 AA9253.GPS derived orthometric heights for airport stations designated as
 AA9253.PACS or SACS are published to 2 decimal places.  This maintains
 AA9253.centimeter relative accuracy between the PACS and SACS.  It does
 AA9253.not indicate centimeter accuracy relative to other marks which are
 AA9253.part of the published vertical control network.
 AA9253
 AA9253.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9253.GEOID18 height accuracy estimate available here.
 AA9253
 AA9253.Click photographs - Photos may exist for this station.
 AA9253
 AA9253.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9253
 AA9253.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9253
 AA9253.The ellipsoidal height was determined by GPS observations
 AA9253.and is referenced to NAD 83.
 AA9253
 AA9253. The following values were computed from the NAD 83(2011) position.
 AA9253
 AA9253;                    North         East     Units Scale Factor Converg.
 AA9253;SPC MD       -   166,987.401   385,343.725   MT  0.99996307   -0 06 23.2
 AA9253;SPC MD       -   547,857.83  1,264,248.54   sFT  0.99996307   -0 06 23.2
 AA9253;UTM  18      - 4,337,979.414   312,573.666   MT  1.00003255   -1 22 14.9
 AA9253
 AA9253!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9253!SPC MD       -   0.99998151  x   0.99996307  =   0.99994458
 AA9253!UTM  18      -   0.99998151  x   1.00003255  =   1.00001406
 AA9253
 AA9253_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1257337979(NAD 83)
 AA9253
 AA9253|---------------------------------------------------------------------|
 AA9253| PID    Reference Object                     Distance      Geod. Az  |
 AA9253|                                                           dddmmss.s |
 AA9253| JV7131 20339                               320.299 METERS 13009     |
 AA9253|---------------------------------------------------------------------|
 AA9253
 AA9253                          SUPERSEDED SURVEY CONTROL
 AA9253
 AA9253  NAD 83(2007)-  39 10 15.09625(N)    077 10 10.57718(W) AD(2002.00) 0
 AA9253  ELLIP H (02/10/07)  117.903  (m)                       GP(2002.00)    
 AA9253  ELLIP H (08/19/02)  117.891  (m)                       GP(       ) 4 2
 AA9253  NAD 83(1991)-  39 10 15.09633(N)    077 10 10.57742(W) AD(       ) 1
 AA9253  ELLIP H (04/02/98)  117.908  (m)                       GP(       ) 4 2
 AA9253  NAD 83(1993)-  39 10 15.09629(N)    077 10 10.57739(W) AD(       ) 1
 AA9253  ELLIP H (11/30/95)  117.912  (m)                       GP(       ) 4 2
 AA9253  NAVD 88 (11/30/95)  149.60   (m)  GEOID93  model used  GPS OBS        
 AA9253
 AA9253.Superseded values are not recommended for survey control.
 AA9253
 AA9253.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9253.See file dsdata.pdf to determine how the superseded data were derived.
 AA9253
 AA9253_MARKER: DD = SURVEY DISK
 AA9253_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA9253_STAMPING: GAI B 1989
 AA9253_MARK LOGO: NOS
 AA9253_PROJECTION: FLUSH
 AA9253_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9253_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA9253+STABILITY: SURFACE MOTION
 AA9253_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9253+SATELLITE: SATELLITE OBSERVATIONS - November 01, 2003
 AA9253
 AA9253  HISTORY     - Date     Condition        Report By
 AA9253  HISTORY     - 1989     MONUMENTED       NOS
 AA9253  HISTORY     - 19911107 GOOD             NGS
 AA9253  HISTORY     - 19940817 GOOD             NOS
 AA9253  HISTORY     - 20031101 GOOD             NGS
 AA9253
 AA9253                          STATION DESCRIPTION
 AA9253
 AA9253'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 AA9253'STATION IS LOCATED NEAR THE NORTH END OF THE FIELD NORTH OF THE SECOND
 AA9253'TAXIWAY SOUTH OF THE NORTH END OF THE RUNWAY.  IT IS 129.5 FT (39.5 M)
 AA9253'NORTH OF THE NORTH END OF A TAXIWAY HOLD BAR, 56.0 FT (17.1 M)
 AA9253'NORTHWEST OF THE CORNER OF THE METAL GRATING OF A CONCRETE DRAIN, AND
 AA9253'6.5 FT (2.0 M) EAST OF THE NORTHEAST CORNER OF THE EAST ONE OF TWO
 AA9253'VASI.  A STANDARD NOS DISK STAMPED GAI B 1989 SET IN THE TOP OF A
 AA9253'CONCRETE MONUMENT ABOUT FLOUSH WITH THE GROUND.
 AA9253
 AA9253                          STATION RECOVERY (1994)
 AA9253
 AA9253'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1994 (RAH)
 AA9253'THE STATION IS LOCATED AT THE MONTGOMERY COUNTY AIRPARK NEAR THE NORTH
 AA9253'END OF THE AIRPORT, NORTH OF THE SECOND TAXIWAY SOUTH OF THE NORTH END
 AA9253'OF THE RUNWAY.  FOR ACCESS TO THE AIRPORT AND THE STATION CONTACT MR.
 AA9253'DOUGLAS MCNEELY, AIRPORT MANAGER, MONTGOMERY COUNTY AIRPARK, 7940
 AA9253'AIRPARK ROAD, GAITHERSBURG, MD 20879, PHONE (301) 963-7100.
 AA9253'
 AA9253'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 124 (WOODFIELD
 AA9253'ROAD) AND AIRPARK ROAD IN NORTH GAITHERSBURG, PROCEED SOUTHWESTERLY
 AA9253'ALONG AIRPARK ROAD FOR 0.65 MI (1.05 KM) TO THE AIRPORT FUEL GATE EAST
 AA9253'OF THE AIRPORT TERMINAL, PROCEED THROUGH FUEL GATE AND BEAR WEST FOR
 AA9253'0.1 MI (0.2 KM) TO PRIMARY TAXIWAY, TURN RIGHT AND GO NORTH ON TAXIWAY
 AA9253'FOR 0.3 MI (0.5 KM) THE SECOND TAXIWAY ON THE LEFT, CONTINUE NORTH
 AA9253'ALONG TAXIWAY FOR 0.25 MI (0.40 KM) TO STATION ON LEFT.
 AA9253'
 AA9253'THE STATION IS 6.5 FT (2.0 M) EAST OF THE NORTHEAST CORNER OF THE EAST
 AA9253'ONE OF TWO VASI, 129.5 FT (39.5 M) NORTH OF THE NORTH END OF A TAXIWAY
 AA9253'HOLD BAR, 56.3 FT (17.2 M) NORTHWEST OF THE CENTER OF THE CENTER OF A
 AA9253'METAL GRATING OF A STORM DRAIN.
 AA9253'
 AA9253'DESCRIBED BY DMC.
 AA9253'THIS IS A SECONDARY ARIPORT CONTROL STATION.
 AA9253
 AA9253                          STATION RECOVERY (2003)
 AA9253
 AA9253'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2003 (GFS)
 AA9253'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1231 ***********************************************************************
 HU1231  DESIGNATION -  GAIETY
 HU1231  PID         -  HU1231
 HU1231  STATE/COUNTY-  MD/WORCESTER
 HU1231  COUNTRY     -  US
 HU1231  USGS QUAD   -  OCEAN CITY (2016)
 HU1231
 HU1231                         *CURRENT SURVEY CONTROL
 HU1231  ______________________________________________________________________
 HU1231* NAD 83(1991) POSITION- 38 19 31.57391(N) 075 05 16.70842(W)   ADJUSTED
 HU1231* NAVD 88 ORTHO HEIGHT -     3.12  (+/-2cm)       10.2   (feet) VERTCON3
 HU1231  ______________________________________________________________________
 HU1231  GEOID HEIGHT    -        -36.068 (meters)                     GEOID18
 HU1231  LAPLACE CORR    -         -0.54  (seconds)                    DEFLEC18
 HU1231  HORZ ORDER      -  SECOND
 HU1231  VERT ORDER      -  THIRD (See Below)
 HU1231
 HU1231.The horizontal coordinates were established by classical geodetic methods
 HU1231.and adjusted by the National Geodetic Survey in January 1992.
 HU1231
 HU1231.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1231.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1231
 HU1231.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1231.GEOID18 height accuracy estimate available here.
 HU1231
 HU1231.The vertical order pertains to the NGVD 29 superseded value.
 HU1231
 HU1231.Click photographs - Photos may exist for this station.
 HU1231
 HU1231.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1231
 HU1231. The following values were computed from the NAD 83(1991) position.
 HU1231
 HU1231;                    North         East     Units Scale Factor Converg.
 HU1231;SPC MD       -    74,877.285   567,180.092   MT  0.99999567   +1 12 00.2
 HU1231;SPC MD       -   245,659.89  1,860,823.35   sFT  0.99999567   +1 12 00.2
 HU1231;UTM  18      - 4,241,927.617   492,310.326   MT  0.99960073   -0 03 16.4
 HU1231
 HU1231!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1231!SPC MD       -   1.00000517  x   0.99999567  =   1.00000084
 HU1231!UTM  18      -   1.00000517  x   0.99960073  =   0.99960590
 HU1231
 HU1231:                Primary Azimuth Mark                     Grid Az
 HU1231:SPC MD       -  BERLIN RESET                             269 48 41.9
 HU1231:UTM  18      -  BERLIN RESET                             271 03 58.5
 HU1231
 HU1231_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9231041927(NAD 83)
 HU1231
 HU1231|---------------------------------------------------------------------|
 HU1231| PID    Reference Object                     Distance      Geod. Az  |
 HU1231|                                                           dddmmss.s |
 HU1231| HU1460 FENWICK ISLAND US NAVY TOWER        APPROX.16.8 KM 0111101.3 |
 HU1231| HU1229 GAIETY RM 1                          21.966 METERS 01444     |
 HU1231| HU1514 OCEAN CITY N MUNICIPAL TANK         APPROX. 5.0 KM 0152318.6 |
 HU1231| HU1488 OCEAN CITY CEN MUNICIPAL TANK       APPROX. 2.3 KM 0162636.0 |
 HU1231| HU1519 OCEAN CITY INLET JETTY LT 5         303.477 METERS 11707     |
 HU1231| HU1523 OCEAN CTY INLT JETTY LT 5 1977      304.698 METERS 11713     |
 HU1231| HU1521 LINDENSTRUTH                        154.574 METERS 12603     |
 HU1231| HU1230 GAIETY 2                              8.806 METERS 16903     |
 HU1231| HU1491 OCEAN CITY CG TOWER 146              10.163 METERS 20132     |
 HU1231| HU0266 SPEICHER                             35.758 METERS 20250     |
 HU1231| HU2584 BERLIN RESET                        APPROX.12.2 KM 2710042.1 |
 HU1231| HU1529 BERLIN STANDPIPE                    APPROX.11.4 KM 2710236.4 |
 HU1231| HU1528 BERLIN MUNICIPAL TANK               APPROX.11.5 KM 2732639.3 |
 HU1231| HU1531 OCEAN DOWNS WATER TANK              APPROX. 7.2 KM 2920834.6 |
 HU1231| HU1490 OCEAN CITY S MUNICIPAL TANK         301.760 METERS 34146     |
 HU1231|---------------------------------------------------------------------|
 HU1231
 HU1231                          SUPERSEDED SURVEY CONTROL
 HU1231
 HU1231  NAD 83(1986)-  38 19 31.55627(N)    075 05 16.73760(W) AD(       ) 2
 HU1231  NAD 27      -  38 19 31.14588(N)    075 05 18.07362(W) AD(       ) 2
 HU1231  NGVD 29 (??/??/??)    3.37   (m)           11.1    (f) RESET       3  
 HU1231  NGVD 29               3.37   (m)           11.1    (f) LEVELING    3  
 HU1231
 HU1231.Superseded values are not recommended for survey control.
 HU1231
 HU1231.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1231.See file dsdata.pdf to determine how the superseded data were derived.
 HU1231
 HU1231_MARKER: DS = TRIANGULATION STATION DISK
 HU1231_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1231_STAMPING: GAIETY 1962
 HU1231_MARK LOGO: CGS
 HU1231_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1231+STABILITY: SURFACE MOTION
 HU1231_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1231+SATELLITE: SATELLITE OBSERVATIONS - December 20, 2005
 HU1231
 HU1231  HISTORY     - Date     Condition        Report By
 HU1231  HISTORY     - 1962     MONUMENTED       CGS
 HU1231  HISTORY     - 1975     GOOD             NGS
 HU1231  HISTORY     - 1977     GOOD             MDDNR
 HU1231  HISTORY     - 1977     GOOD             NGS
 HU1231  HISTORY     - 1977     GOOD             NGS
 HU1231  HISTORY     - 1991     GOOD             USPSQD
 HU1231  HISTORY     - 20031228 GOOD             USPSQD
 HU1231  HISTORY     - 20051220 GOOD             USPSQD
 HU1231
 HU1231                          STATION DESCRIPTION
 HU1231
 HU1231'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1231'THE STATION IS LOCATED AT THE EXTREME END OF OCEAN CITY, AT THE
 HU1231'COAST GUARD TOWER ON THE NORTH SIDE OF THE OCEAN CITY INLET AND
 HU1231'ON PROPERTY OF THE CITY.
 HU1231'
 HU1231'TO REACH THE STATION FROM U.S. HIGHWAY 50 AND THE EAST END OF
 HU1231'THE BRIDGE IN OCEAN CITY, GO EAST FOR 0.1 MILE TO PHILADELPHIA
 HU1231'AVENUE, TURN RIGHT AND GO SOUTH FOR 0.3 MILE TO SOUTH FIRST
 HU1231'STREET, TURN LEFT AND GO EAST FOR 0.07 MILE TO BALTIMORE AVENUE,
 HU1231'TURN RIGHT AND GO SOUTH AND EAST FOR 0.15 MILE TO THE COAST GUARD
 HU1231'TOWER AND THE STATION AS DESCRIBED.
 HU1231'
 HU1231'THE STATION MARK IS A STANDARD DISK STAMPED GAIETY 1962, SET IN
 HU1231'TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND
 HU1231'SURFACE.  IT IS 2.3 FEET EAST OF A STANDARD METAL WITNESS POST
 HU1231'AND MARKER, 14.7 FEET EAST OF THE BOARD WALK, 26.7 FEET
 HU1231'NORTH-NORTHEAST OF THE NORTHWEST LEG OF THE COAST GUARD TOWER,
 HU1231'26.9 FEET NORTH OF THE NORTHEAST LEG OF THE COAST GUARD TOWER
 HU1231'AND 43.0 FEET WEST OF THE CENTERLINE OF THE EXIT OF THE PARKING
 HU1231'LOT.
 HU1231'
 HU1231'REFERENCE MARK 1, IS A STANDARD DISK STAMPED GAIETY NO 1 1962,
 HU1231'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 HU1231'GROUND SURFACE.  IT IS 3.7 FEET SOUTH OF A STANDARD METAL WITNESS
 HU1231'POST AND MARKER, 1.2 FEET EAST OF THE BOARD WALK AND 26.0 FEET
 HU1231'WEST OF THE WEST EDGE OF MACADAM PARKING LOT.
 HU1231'
 HU1231'SPEICHER (REFERENCE MARK 2) IS A BRONZE DISK STAMPED SPEICHER
 HU1231'1956, BELONGING TO THE U.S. ENGINEER DEPARTMENT AND IS CONSIDERED
 HU1231'A TRIANGULATION.  IT IS CEMENTED IN A DRILL HOLE IN THE SEA WALL,
 HU1231'ON THE NORTH SIDE OF THE INLET.  IT IS 25.6 FEET EAST OF THE
 HU1231'SOUTHWEST CORNER OF THE WALL, 42.0 FEET SOUTH OF THE CENTER LINE
 HU1231'OF THE MACADAM STREET LEADING TO THE PARKING LOT, 76.2 FEET
 HU1231'SOUTH-SOUTHWEST OF THE SOUTHWEST LEG OF THE COAST GUARD TOWER
 HU1231'AND 60.0 FEET SOUTH OF THE SOUTHEAST CORNER OF THE BOARD WALK.
 HU1231'
 HU1231'LINDENSTRUTH (AZIMUTH MARK) IS A U.S. ENGINEER DEPARTMENT
 HU1231'TRIANGULATION DISK CEMENTED IN A DRILL HOLE IN THE SEA WALL
 HU1231'LOCATED ON THE NORTH SIDE OF THE INLET AND STAMPED LINDENSTRUTH
 HU1231'1956.  IT IS 4.0 FEET WEST OF THE EAST END OF THE WALL, 104 PACES
 HU1231'NORTHWEST OF THE SOUTHEAST CORNER OF THE PARKING AREA.
 HU1231'
 HU1231'HEIGHT OF LIGHT ABOVE STATION MARK 26.03 METERS.
 HU1231
 HU1231                          STATION RECOVERY (1975)
 HU1231
 HU1231'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (EAB)
 HU1231'STATION MARK WAS RECOVERED AND IT WAS TO BE IN GOOD
 HU1231'CONDITION.  IT NOW PROJECTS 2 INCHES IN A BLACK TOP PARKING AREA.
 HU1231'
 HU1231'REFERENCE MARK NO 1 WAS RECOVERED AND IT WAS FOUND TO BE IN GOOD
 HU1231'CONDITION.  IT IS NOW 9.8 FEET SOUTH OF PARKING METER A6, 9.5
 HU1231'FEET NORTH OF PARKING METER A5, 3 FEET EAST OF A 8 INCH PILING
 HU1231'THAT SUPPORTS THE BOARDWALK AND 4 INCHES BELOW THE SAND LEVEL.
 HU1231'
 HU1231'REFERENCE MARK 2, SPEICHER (USE), WAS RECOVERED AND FOUND TO BE
 HU1231'IN GOOD CONDITION.
 HU1231'
 HU1231'AZIMUTH MARK, LINDENSTRUTH (USE), WAS RECOVERED AND IT WAS FOUND
 HU1231'TO BE IN GOOD CONDITION.
 HU1231'
 HU1231'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1231'IN THE SOUTHEAST PART OF OCEAN CITY.
 HU1231
 HU1231                          STATION RECOVERY (1977)
 HU1231
 HU1231'RECOVERY NOTE BY MD DEPT OF NAT RES 1977
 HU1231'STATION, REFERENCE NO 1, AND AZIMUTH MARK (LINDENSTRUTH USE)
 HU1231'RECOVERED IN GOOD CONDITION.  THE STATION MARK IS NOW IN A
 HU1231'HARDSURFACED PARKING LOT AND EXPOSED 3 INCHES, 23 FEET NE OF
 HU1231'NORTHWEST CORNER OF FENCE AROUND COAST GUARD TOWER, AND 24 FEET
 HU1231'NORTHWEST OF NORTHEAST CORNER OF FENCE.  REFERENCE MARK 1 IS
 HU1231'BELOW SURFACE OF SAND AND GRASS 4 INCHES AND 2.4 FEET EAST OF
 HU1231'WITNESS SIGN NAILED TO PILING THAT SUPPORTS BOARDWALK, AND 5.5
 HU1231'FEET SOUTHEAST OF LAMP POST ON EAST EDGE OF BOARDWALK.
 HU1231'AZIMUTH MARK IS 3.7 FEET WEST OF EAST END OF CONCRETE SEAWALL.
 HU1231'REFERENCE MARK 2 IS 25.6 FEET EAST OF WEST END OF CONCRETE
 HU1231'SEAWALL.
 HU1231
 HU1231                          STATION RECOVERY (1977)
 HU1231
 HU1231'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HU1231'TRAVERSE.
 HU1231'
 HU1231'EDM.
 HU1231'
 HU1231'NO OTHER OBJECTS V.G.
 HU1231'
 HU1231'THE STATION AND ALL MARKS WERE RECOVERED IN GOOD CONDITION AS
 HU1231'PREVIOUSLY DESCRIBED.  A SHORTER DISTANCE OF 0.05 FOOT OR 0.016
 HU1231'METER WAS NOTED TO SPEICHER USE RM2.  THE DISTANCE TO REFERENCE MARK
 HU1231'ONE WAS WITHIN CLOSE AGREEMENT WITH THE 1962 MEASUREMENT.  THE
 HU1231'DIRECTION BETWEEN LINDENSTRUTH (USE) (AZIMUTH MARK) AND SPEICHER
 HU1231'(USE) RM2 WERE WITHIN CLOSE AGREEMENT WITH THE 1962
 HU1231'OBSERVATION.  THE DIRECTION BETWEEN LINDENSTRUTH (USE)
 HU1231'AZIMUTH MARK AND REFERENCE MARK ONE FAILED TO CHECK BY 2 MINUTES
 HU1231'AND 28.6 SECONDS.
 HU1231'
 HU1231'THE OCEAN CITY INLET, JETTY LIGHT (RED) HAD BEEN TAKEN DOWN IN
 HU1231'1974 AND A NEW LIGHT CONSTRUCTED.  A DIFFERENCE OF 6 MINUTES AND
 HU1231'10.2 SECONDS WAS NOTED BETWEEN THE OLD LIGHT AND THE NEW LIGHT.
 HU1231'
 HU1231'THE STATION WAS IN DANGER OF DESTRUCTION BY THE CONSTRUCTION OF A
 HU1231'NEW BUILDING.  STATION GAIETY 2 WAS ESTABLISHED.
 HU1231'
 HU1231'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN THE SOUTH EDGE
 HU1231'OF OCEAN CITY.
 HU1231
 HU1231                          STATION RECOVERY (1977)
 HU1231
 HU1231'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 HU1231'AT OCEAN CITY.
 HU1231'LOCATED IN THE MOST SOUTH EDGE OF OCEAN CITY JUST NORTH OF THE
 HU1231'COAST GUARD TOWER AND UNDER A PERPOSED COAST GUARD BUILDING WHICH
 HU1231'IS SUPPORTED BY STEEL PILES. IT IS 118 FEET NORTH OF A SEA WALL,
 HU1231'27 FEET NORTHEAST OF THE NORTHWEST LEG OF THE COAST GUARD STATION
 HU1231'AND IN THE SOUTHWEST PART OF THE BUILDING.
 HU1231
 HU1231                          STATION RECOVERY (1991)
 HU1231
 HU1231'RECOVERY NOTE BY US POWER SQUADRON 1991 (CAC)
 HU1231'RECOVERED IN GOOD CONDITION.
 HU1231
 HU1231                          STATION RECOVERY (2003)
 HU1231
 HU1231'RECOVERY NOTE BY US POWER SQUADRON 2003 (PFM)
 HU1231'RECOVERED IN GOOD CONDITION.
 HU1231
 HU1231                          STATION RECOVERY (2005)
 HU1231
 HU1231'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU1231'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1230 ***********************************************************************
 HU1230  DESIGNATION -  GAIETY 2
 HU1230  PID         -  HU1230
 HU1230  STATE/COUNTY-  MD/WORCESTER
 HU1230  COUNTRY     -  US
 HU1230  USGS QUAD   -  OCEAN CITY (2016)
 HU1230
 HU1230                         *CURRENT SURVEY CONTROL
 HU1230  ______________________________________________________________________
 HU1230* NAD 83(1991) POSITION- 38 19 31.29352(N) 075 05 16.63952(W)   ADJUSTED
 HU1230* NAVD 88 ORTHO HEIGHT -     3.03  (+/-2cm)        9.9   (feet) VERTCON3
 HU1230  ______________________________________________________________________
 HU1230  GEOID HEIGHT    -        -36.068 (meters)                     GEOID18
 HU1230  LAPLACE CORR    -         -0.54  (seconds)                    DEFLEC18
 HU1230  HORZ ORDER      -  SECOND
 HU1230  VERT ORDER      -  THIRD (See Below)
 HU1230
 HU1230.The horizontal coordinates were established by classical geodetic methods
 HU1230.and adjusted by the National Geodetic Survey in January 1992.
 HU1230
 HU1230.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1230.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1230
 HU1230.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1230.GEOID18 height accuracy estimate available here.
 HU1230
 HU1230.The vertical order pertains to the NGVD 29 superseded value.
 HU1230
 HU1230.Click photographs - Photos may exist for this station.
 HU1230
 HU1230.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1230
 HU1230. The following values were computed from the NAD 83(1991) position.
 HU1230
 HU1230;                    North         East     Units Scale Factor Converg.
 HU1230;SPC MD       -    74,868.676   567,181.946   MT  0.99999568   +1 12 00.2
 HU1230;SPC MD       -   245,631.65  1,860,829.43   sFT  0.99999568   +1 12 00.2
 HU1230;UTM  18      - 4,241,918.973   492,311.991   MT  0.99960073   -0 03 16.4
 HU1230
 HU1230!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1230!SPC MD       -   1.00000518  x   0.99999568  =   1.00000086
 HU1230!UTM  18      -   1.00000518  x   0.99960073  =   0.99960591
 HU1230
 HU1230_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9231141918(NAD 83)
 HU1230
 HU1230|---------------------------------------------------------------------|
 HU1230| PID    Reference Object                     Distance      Geod. Az  |
 HU1230|                                                           dddmmss.s |
 HU1230| HU1229 GAIETY RM 1                          30.142 METERS 00727     |
 HU1230| HU1523 OCEAN CTY INLT JETTY LT 5 1977      299.335 METERS 11554     |
 HU1230| HU1521 LINDENSTRUTH                        148.255 METERS 12344     |
 HU1230| HU0266 SPEICHER                             28.857 METERS 21236     |
 HU1230| DC5932 GAIETY RM 3                           7.253 METERS 28607     |
 HU1230| HU1231 GAIETY                                8.806 METERS 34903     |
 HU1230|---------------------------------------------------------------------|
 HU1230
 HU1230                          SUPERSEDED SURVEY CONTROL
 HU1230
 HU1230  NAD 83(1986)-  38 19 31.27599(N)    075 05 16.66861(W) AD(       ) 2
 HU1230  NAD 27      -  38 19 30.86561(N)    075 05 18.00465(W) AD(       ) 2
 HU1230  NGVD 29 (??/??/??)    3.28   (m)           10.8    (f) RESET       3  
 HU1230  NGVD 29               3.28   (m)           10.8    (f) LEVELING    3  
 HU1230
 HU1230.Superseded values are not recommended for survey control.
 HU1230
 HU1230.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1230.See file dsdata.pdf to determine how the superseded data were derived.
 HU1230
 HU1230_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1230_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1230_STAMPING: GAIETY 2 1977
 HU1230_MARK LOGO: NGS
 HU1230_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1230+STABILITY: SURFACE MOTION
 HU1230
 HU1230  HISTORY     - Date     Condition        Report By
 HU1230  HISTORY     - 1977     MONUMENTED       NGS
 HU1230  HISTORY     - 1977     GOOD             NGS
 HU1230  HISTORY     - 20031228 MARK NOT FOUND   USPSQD
 HU1230
 HU1230                          STATION DESCRIPTION
 HU1230
 HU1230'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HU1230'NO OTHER OBJECTS V.G.
 HU1230'
 HU1230'THE STATION IS LOCATED ON THE MOST SOUTH EDGE OF OCEAN CITY, ABOUT
 HU1230'MIDWAY BETWEEN THE SOUTHEAST AND SOUTHWEST END OF THE CITY, AND
 HU1230'AT THE COAST GUARD TOWER.
 HU1230'
 HU1230'TO REACH FROM THE EAST END OF THE U.S. HIGHWAY 50 BRIDGE IN OCEAN
 HU1230'CITY, GO EAST ON U.S. HIGHWAY 50 FOR 0.1 MILE TO PHILADELPHIA
 HU1230'AVENUE.  TURN RIGHT AND GO SOUTH ON PHILADELPHIA AVENUE FOR 0.3
 HU1230'MILE TO SOUTH FIRST STREET.  TURN LEFT AND GO EAST ON SOUTH FIRST
 HU1230'STREET FOR 0.5 MILE TO BALTIMORE AVENUE.  TURN RIGHT AND FOLLOW
 HU1230'BALTIMORE AVENUE SOUTH AND EAST FOR 0.15 MILE TO THE STATION ON
 HU1230'THE LEFT.
 HU1230'
 HU1230'THE STATION SURFACE MARK IS A STANDARD DISK STAMPED GAIETY 2 1977,
 HU1230'SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS FLUSH
 HU1230'WITH THE SURFACE.  THE SUB-SURFACE MARK IS A STANDARD DISK STAMPED
 HU1230'GAIETY 2 1977, SET IN THE TOP OF AN 8-INCH MASS OF CONCRETE 3-1/2
 HU1230'FEET BELOW THE SURFACE.  THEY ARE 487 FEET WEST-NORTHWEST OF THE
 HU1230'MOST SOUTHEAST POINT OF SEAWALL, 97 FEET NORTH OF THE SOUTH EDGE
 HU1230'OF THE SEAWALL, 54.5 FEET WEST OF A POWERLINE POLE NUMBERED 1Q,
 HU1230'19 FEET SOUTHWEST OF THE SOUTHEAST CORNER OF PROPOSED COAST GUARD
 HU1230'BUILDING, 7 FEET EAST OF THE NORTHEAST LEG OF THE COAST GUARD
 HU1230'TOWER, AND 1.7 FEET SOUTH OF A WITNESS POST.
 HU1230'
 HU1230'REFERENCE MARK ONE IS A STANDARD DISK STAMPED GAIETY NO 1 1962
 HU1230'SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS FLUSH
 HU1230'WITH THE SURFACE.  IT IS 97 FEET NORTH OF NORTHWEST LEG OF COAST
 HU1230'GUARD TOWER, 31 FEET NORTHWEST OF MOST NORTHWEST PILEING FOR THE
 HU1230'PROPOSED COAST GUARD BUILDING, 2.5 FEET EAST OF A WITNESS SIGN,
 HU1230'AND UNDER THE BOARDWALK.
 HU1230'
 HU1230'SPEICHER (USE) REFERENCE MARK 2 IS A U.S. ENGINEERS DEPARTMENT
 HU1230'TRIANGULATION STATION DISK STAMPED SPEICHER 1956, CEMENTED IN
 HU1230'A DRILL HOLE IN THE SEAWALL ON THE MOST SOUTH POINT OF OCEAN
 HU1230'CITY.  IT IS 104 FEET SOUTHWEST OF THE POWERLINE POLE NUMBERED 1Q,
 HU1230'96.3 FEET SOUTH-SOUTHWEST OF THE WITNESS POST, AND 77 FEET
 HU1230'SOUTH-SOUTHEAST OF SOUTHWEST LEG OF COAST GUARD TOWER.
 HU1230'
 HU1230'REFERENCE MARK 3 IS A STANDARD DISK STAMPED GAIETY 1962 NO 3 1977,
 HU1230'CEMENTED IN A DRILL HOLE IN THE FOUNDATION FOR THE NORTHWEST LEG OF
 HU1230'THE COAST HUARD TOWER. IT IS 92 FEET NORTH OF THE SEAWALL, 24 FEET
 HU1230'SOUTHWEST OF THE WITNESS POST, 1.0 FOOT SOUTH OF NORTHWEST LEG OF
 HU1230'THE COAST GUARD TOWER, AND .5 FOOT EAST OF WEST EDGE OF THE CONCRETE
 HU1230'FOOTER FOR THE NORTHWEST LEG OF THE COAST GUARD TOWER.
 HU1230'
 HU1230'LINDENSTRUTH USE AZ MK IS A U.S. ENGINEERS DEPARTMENT TRIANGULATION
 HU1230'DISK STAMPED LINDENSTRUTH 1958 CEMENTED IN A DRILL HOLE IN THE MOST
 HU1230'EAST END OF SEAWALL.  IT IS 3.8 FEET WEST OF EAST END OF SEAWALL,
 HU1230'1.8 FEET NORTH OF SOUTH EDGE OF SEAWALL, AND 1.8 FEET SOUTH OF
 HU1230'NORTH EDGE OF SEAWALL.
 HU1230'
 HU1230'NEAREST TOWN--OCEAN CITY.
 HU1230
 HU1230                          STATION RECOVERY (1977)
 HU1230
 HU1230'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 HU1230'AT OCEAN CITY.
 HU1230'LOCATED IN THE MOST SOUTH EDGE OF OCEAN CITY, AT THE COAST GUARD
 HU1230'TOWER AND BUILDING, 97 FEET NORTH OF A SEA WALL, 54.5 FEET WEST
 HU1230'OF A POWER LINE POLE NUMBERED 1 Q, 19 FEET SOUTHWEST OF THE
 HU1230'PERPOSED SOUTHEAST CORNER OF THE COAST GUARD BUILDING, 7 FEET EAST
 HU1230'OF THE NORTHEAST LEG OF THE TOWER AND 3 FEET EAST OF THE FENCE
 HU1230'AROUND THE TOWER.
 HU1230
 HU1230                          STATION RECOVERY (2003)
 HU1230
 HU1230'RECOVERY NOTE BY US POWER SQUADRON 2003 (PFM)
 HU1230'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1228 ***********************************************************************
 HU1228  DESIGNATION -  GAIETY 2 RM 3
 HU1228  PID         -  HU1228
 HU1228  STATE/COUNTY-  MD/WORCESTER
 HU1228  COUNTRY     -  US
 HU1228  USGS QUAD   -  OCEAN CITY (2016)
 HU1228
 HU1228                         *CURRENT SURVEY CONTROL
 HU1228  ______________________________________________________________________
 HU1228* NAD 83(1986) POSITION- 38 19 31.36   (N) 075 05 16.93   (W)   HD_HELD1
 HU1228* NAVD 88 ORTHO HEIGHT -     2.98  (+/-2cm)        9.8   (feet) VERTCON3
 HU1228  ______________________________________________________________________
 HU1228  GEOID HEIGHT    -        -36.068 (meters)                     GEOID18
 HU1228  VERT ORDER      -  THIRD (See Below)
 HU1228
 HU1228.The horizontal coordinates were determined by differentially corrected
 HU1228.hand held GPS observations or other comparable positioning techniques
 HU1228.and have an estimated accuracy of +/- 3 meters.
 HU1228
 HU1228.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1228.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1228
 HU1228.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1228.GEOID18 height accuracy estimate available here.
 HU1228
 HU1228.The vertical order pertains to the NGVD 29 superseded value.
 HU1228
 HU1228.Click photographs - Photos may exist for this station.
 HU1228
 HU1228;                    North         East    Units  Estimated Accuracy
 HU1228;SPC MD       -    74,870.6     567,174.8     MT  (+/- 3 meters HH1 GPS) 
 HU1228
 HU1228_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9230441921(NAD 83)
 HU1228
 HU1228                          SUPERSEDED SURVEY CONTROL
 HU1228
 HU1228  NGVD 29 (??/??/??)    3.23   (m)           10.6    (f) RESET       3  
 HU1228
 HU1228.Superseded values are not recommended for survey control.
 HU1228
 HU1228.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1228.See file dsdata.pdf to determine how the superseded data were derived.
 HU1228
 HU1228_MARKER: DR = REFERENCE MARK DISK
 HU1228_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HU1228_SP_SET: FOUNDATION
 HU1228_STAMPING: GAIETY 2 NO 3 1977
 HU1228_MARK LOGO: NGS
 HU1228_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU1228
 HU1228  HISTORY     - Date     Condition        Report By
 HU1228  HISTORY     - 1977     MONUMENTED       NGS
 HU1228  HISTORY     - 1977     GOOD             NGS
 HU1228
 HU1228                          STATION DESCRIPTION
 HU1228
 HU1228'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 HU1228'AT OCEAN CITY.
 HU1228'LOCATED IN THE FOUNDATION FOR THE NORTHWEST LEG OF THE COAST
 HU1228'GUARD TOWER, IN THE MOST SOUTH EDGE OF OCEAN CITY, 92 FEET NORTH OF
 HU1228'A SEA WALL, 1 FOOT SOUTH OF THE NORTHWEST LEG OF THE TOWER AND 0.5
 HU1228'FOOT EAST OF THE WEST EDGE OF THE FOUNDATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1522 ***********************************************************************
 HU1522  DESIGNATION -  GAIETY 2 RM 4
 HU1522  PID         -  HU1522
 HU1522  STATE/COUNTY-  MD/WORCESTER
 HU1522  COUNTRY     -  US
 HU1522  USGS QUAD   -  OCEAN CITY (2016)
 HU1522
 HU1522                         *CURRENT SURVEY CONTROL
 HU1522  ______________________________________________________________________
 HU1522* NAD 83(1991) POSITION- 38 19 32.37016(N) 075 05 11.78987(W)   ADJUSTED
 HU1522* NAVD 88 ORTHO HEIGHT -     1.8   (meters)        6.    (feet) VERTCON3
 HU1522  ______________________________________________________________________
 HU1522  GEOID HEIGHT    -        -36.068 (meters)                     GEOID18
 HU1522  LAPLACE CORR    -         -0.54  (seconds)                    DEFLEC18
 HU1522  HORZ ORDER      -  THIRD
 HU1522
 HU1522.The horizontal coordinates were established by classical geodetic methods
 HU1522.and adjusted by the National Geodetic Survey in January 1992.
 HU1522
 HU1522.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1522.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1522
 HU1522.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1522.GEOID18 height accuracy estimate available here.
 HU1522
 HU1522.Click photographs - Photos may exist for this station.
 HU1522
 HU1522.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1522
 HU1522. The following values were computed from the NAD 83(1991) position.
 HU1522
 HU1522;                    North         East     Units Scale Factor Converg.
 HU1522;SPC MD       -    74,904.334   567,299.021   MT  0.99999564   +1 12 03.3
 HU1522;SPC MD       -   245,748.64  1,861,213.54   sFT  0.99999564   +1 12 03.3
 HU1522;UTM  18      - 4,241,952.046   492,429.771   MT  0.99960071   -0 03 13.4
 HU1522
 HU1522!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1522!SPC MD       -   1.00000538  x   0.99999564  =   1.00000102
 HU1522!UTM  18      -   1.00000538  x   0.99960071  =   0.99960609
 HU1522
 HU1522_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9242941952(NAD 83)
 HU1522
 HU1522                          SUPERSEDED SURVEY CONTROL
 HU1522
 HU1522  NAD 83(1986)-  38 19 32.35247(N)    075 05 11.81895(W) AD(       ) 3
 HU1522  NAD 27      -  38 19 31.94229(N)    075 05 13.15515(W) AD(       ) 3
 HU1522  NGVD 29 (07/19/86)    2.0    (m)            7.     (f) VERT ANG       
 HU1522
 HU1522.Superseded values are not recommended for survey control.
 HU1522
 HU1522.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1522.See file dsdata.pdf to determine how the superseded data were derived.
 HU1522
 HU1522_MARKER: DR = REFERENCE MARK DISK
 HU1522_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1522_STAMPING: GAIETY 2 NO 4 1978
 HU1522_MARK LOGO: NGS
 HU1522_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU1522_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1522+STABILITY: SURFACE MOTION
 HU1522
 HU1522  HISTORY     - Date     Condition        Report By
 HU1522  HISTORY     - 1978     MONUMENTED       NGS
 HU1522  HISTORY     - 20040410 MARK NOT FOUND   USPSQD
 HU1522
 HU1522                          STATION DESCRIPTION
 HU1522
 HU1522'DESCRIBED BY NATIONAL GEODETIC SURVEY 1978 (CLN)
 HU1522'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 HU1522'AS PREVIOUSLY DESCRIBED.  A NEW REFERENCE MARK FOUR WAS ESTABLISHED
 HU1522'TO ESTABLISH A BETTER CHECK ON THIS STATION.  A POLARIS AZIMUTH WAS
 HU1522'OBSERVED FROM THE REFERENCE MARK FOUR.
 HU1522'
 HU1522'ADDITIONAL INFORMATION FOLLOWS.
 HU1522'
 HU1522'REFERENCE MARK 4 IS A STANDARD DISK STAMPED---GRIETY 2 NO 4
 HU1522'1978---SET IN THE TOP OF A 10-INCH ROUND CONCRETE WHICH IS FLUSH WITH
 HU1522'THE SURFACE IT IS 34 FEET WEST OF THE CENTER OF THE FIRST ROAD W OF
 HU1522'THE SHORE LINE, 4 FEET WEST OF A POWERLINE POLE NUMBERED 1 AL 61551
 HU1522'91642, 3 FEET NE OF A PARKING METER NUMBERED J 10 AND 2.2 FEET
 HU1522'WEST OF A WITNESS POST.
 HU1522
 HU1522                          STATION RECOVERY (2004)
 HU1522
 HU1522'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 HU1522'PARKING METERS REMOVED.  REPLACED BY LARGE PAY LOT.  NO EVIDENCE OF
 HU1522'MARK OR WITNESS POST DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1229 ***********************************************************************
 HU1229  DESIGNATION -  GAIETY RM 1
 HU1229  PID         -  HU1229
 HU1229  STATE/COUNTY-  MD/WORCESTER
 HU1229  COUNTRY     -  US
 HU1229  USGS QUAD   -  OCEAN CITY (2016)
 HU1229
 HU1229                         *CURRENT SURVEY CONTROL
 HU1229  ______________________________________________________________________
 HU1229* NAD 83(1986) POSITION- 38 19 32.26   (N) 075 05 16.48   (W)   HD_HELD1
 HU1229* NAVD 88 ORTHO HEIGHT -     3.05  (+/-2cm)       10.0   (feet) VERTCON3
 HU1229  ______________________________________________________________________
 HU1229  GEOID HEIGHT    -        -36.068 (meters)                     GEOID18
 HU1229  VERT ORDER      -  THIRD (See Below)
 HU1229
 HU1229.The horizontal coordinates were determined by differentially corrected
 HU1229.hand held GPS observations or other comparable positioning techniques
 HU1229.and have an estimated accuracy of +/- 3 meters.
 HU1229
 HU1229.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1229.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1229
 HU1229.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1229.GEOID18 height accuracy estimate available here.
 HU1229
 HU1229.The vertical order pertains to the NGVD 29 superseded value.
 HU1229
 HU1229.Click photographs - Photos may exist for this station.
 HU1229
 HU1229;                    North         East    Units  Estimated Accuracy
 HU1229;SPC MD       -    74,898.6     567,185.2     MT  (+/- 3 meters HH1 GPS) 
 HU1229
 HU1229_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9231541948(NAD 83)
 HU1229
 HU1229                          SUPERSEDED SURVEY CONTROL
 HU1229
 HU1229  NGVD 29 (??/??/??)    3.30   (m)           10.8    (f) RESET       3  
 HU1229
 HU1229.Superseded values are not recommended for survey control.
 HU1229
 HU1229.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1229.See file dsdata.pdf to determine how the superseded data were derived.
 HU1229
 HU1229_MARKER: DR = REFERENCE MARK DISK
 HU1229_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1229_STAMPING: GAIETY NO 1 1962
 HU1229_MARK LOGO: CGS
 HU1229_PROJECTION: FLUSH
 HU1229_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1229+STABILITY: SURFACE MOTION
 HU1229
 HU1229  HISTORY     - Date     Condition        Report By
 HU1229  HISTORY     - 1962     MONUMENTED       CGS
 HU1229  HISTORY     - 1977     GOOD             NGS
 HU1229
 HU1229                          STATION DESCRIPTION
 HU1229
 HU1229'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 HU1229'AT OCEAN CITY.
 HU1229'LOCATED IN THE MOST SOUTH PART OF OCEAN CITY, JUST WEST OF A
 HU1229'LARGE PARKING AREA, 188 FEET NORTH OF A SEA WALL, 97 FEET NORTH OF
 HU1229'THE NORTHWEST LEG OF A COAST GUARD TOWER, 31 FEET NORTHWEST OF
 HU1229'THE MOST NORTHWEST PILEING UNDER A PREPOSED COAST GUARD BUILDING
 HU1229'AND 2.5 FEET EAST OF A WOOD PILEING FOR A BOARDWALK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2293 ***********************************************************************
 JV2293  DESIGNATION -  GAIT
 JV2293  PID         -  JV2293
 JV2293  STATE/COUNTY-  MD/MONTGOMERY
 JV2293  COUNTRY     -  US
 JV2293  USGS QUAD   -  GAITHERSBURG (2016)
 JV2293
 JV2293                         *CURRENT SURVEY CONTROL
 JV2293  ______________________________________________________________________
 JV2293* NAD 83(1993) POSITION- 39 08 47.79100(N) 077 12 53.26701(W)   ADJUSTED
 JV2293* NAVD 88 ORTHO HEIGHT -   138.724 (meters)      455.13  (feet) ADJUSTED
 JV2293  ______________________________________________________________________
 JV2293  GEOID HEIGHT    -        -31.751 (meters)                     GEOID18
 JV2293  LAPLACE CORR    -          1.47  (seconds)                    DEFLEC18
 JV2293  DYNAMIC HEIGHT  -        138.652 (meters)      454.89  (feet) COMP
 JV2293  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV2293
 JV2293  HORZ ORDER      -  FIRST
 JV2293  VERT ORDER      -  SECOND    CLASS 0
 JV2293
 JV2293.The horizontal coordinates were established by classical geodetic methods
 JV2293.and adjusted by the National Geodetic Survey in November 1994.
 JV2293
 JV2293.The orthometric height was determined by differential leveling and
 JV2293.adjusted by the NATIONAL GEODETIC SURVEY
 JV2293.in June 1991.
 JV2293
 JV2293.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2293.GEOID18 height accuracy estimate available here.
 JV2293
 JV2293.Click photographs - Photos may exist for this station.
 JV2293
 JV2293.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2293
 JV2293.The dynamic height is computed by dividing the NAVD 88
 JV2293.geopotential number by the normal gravity value computed on the
 JV2293.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2293.degrees latitude (g = 980.6199 gals.).
 JV2293
 JV2293.The modeled gravity was interpolated from observed gravity values.
 JV2293
 JV2293. The following values were computed from the NAD 83(1993) position.
 JV2293
 JV2293;                    North         East     Units Scale Factor Converg.
 JV2293;SPC MD       -   164,303.368   381,432.163   MT  0.99996099   -0 08 05.3
 JV2293;SPC MD       -   539,051.97  1,251,415.35   sFT  0.99996099   -0 08 05.3
 JV2293;UTM  18      - 4,335,382.119   308,603.527   MT  1.00005108   -1 23 55.1
 JV2293
 JV2293!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2293!SPC MD       -   0.99998322  x   0.99996099  =   0.99994421
 JV2293!UTM  18      -   0.99998322  x   1.00005108  =   1.00003430
 JV2293
 JV2293:                Primary Azimuth Mark                     Grid Az
 JV2293:SPC MD       -  ANCH                                     163 38 12.5
 JV2293:UTM  18      -  ANCH                                     164 54 02.3
 JV2293
 JV2293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0860335382(NAD 83)
 JV2293
 JV2293|---------------------------------------------------------------------|
 JV2293| PID    Reference Object                     Distance      Geod. Az  |
 JV2293|                                                           dddmmss.s |
 JV2293| JV2291 GAIT RM 1                             8.959 METERS 00946     |
 JV2293| JV4415 GAITHERSBURG THOMAS CO STACK        APPROX. 1.2 KM 1145122.2 |
 JV2293| JV2295 ANCH                                APPROX. 1.1 KM 1633007.2 |
 JV2293| JV2292 GAIT RM 2                            10.448 METERS 19744     |
 JV2293|---------------------------------------------------------------------|
 JV2293
 JV2293                          SUPERSEDED SURVEY CONTROL
 JV2293
 JV2293  NAD 83(1991)-  39 08 47.79060(N)    077 12 53.26734(W) AD(       ) 1
 JV2293  NAD 83(1986)-  39 08 47.79052(N)    077 12 53.27741(W) AD(       ) 1
 JV2293  NAD 27      -  39 08 47.40422(N)    077 12 54.33661(W) AD(       ) 1
 JV2293  NGVD 29             138.93   (m)          455.8    (f) LEVELING    3  
 JV2293  NGVD 29 (11/26/84)  138.934  (m)          455.82   (f) ADJUSTED    2 0
 JV2293
 JV2293.Superseded values are not recommended for survey control.
 JV2293
 JV2293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2293.See file dsdata.pdf to determine how the superseded data were derived.
 JV2293
 JV2293_MARKER: DS = TRIANGULATION STATION DISK
 JV2293_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2293_STAMPING: GAIT 1958
 JV2293_MARK LOGO: CGS
 JV2293_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2293+STABILITY: SURFACE MOTION
 JV2293
 JV2293  HISTORY     - Date     Condition        Report By
 JV2293  HISTORY     - 1958     MONUMENTED       CGS
 JV2293  HISTORY     - 1958     GOOD             CGS
 JV2293  HISTORY     - 1963     GOOD             CGS
 JV2293  HISTORY     - 1966     GOOD             CGS
 JV2293  HISTORY     - 1966     GOOD             CGS
 JV2293  HISTORY     - 19950823 MARK NOT FOUND   USPSQD
 JV2293
 JV2293                          STATION DESCRIPTION
 JV2293
 JV2293'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2293'THE STATION IS ABOUT 0.75 MILE WEST OF THE CENTER OF GAITHERSBURG,
 JV2293'ABOUT 120 YARDS NORTH OF OF RAILROAD AND JUST SOUTHEAST OF THE
 JV2293'GAITHERSBURG INTER-CHANGE ON U.S. HIGHWAY 240.  IT IS APPROXIMATLEY
 JV2293'240 FEET EAST OF U.S. HIGHWAY 240 AND 84 FEET EAST-NORTHEAST OF
 JV2293'POWER LINE POLE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED GAIT
 JV2293'NO 1 1958.
 JV2293'
 JV2293'R.M. NO. 1 IS SET FLUSH AND THE DISK IS STAMPED GAIT NO 1 1958.
 JV2293'
 JV2293'R.M. NO. 2 IS 52-1/2 FEET NORTH-NORTHEAST OF POOR LINE POLE.  THE
 JV2293'MARK IS SET FLUSH AND THE DISK IS STAMPED GAIT NO 2 1958.
 JV2293'
 JV2293'THE DISTANCE FROM R.M. NO. 1 TO R.M. NO. 2 IS 63.58 FEET OR 19.378
 JV2293'METERS.
 JV2293'
 JV2293'TO REACH THE STATION FROM THE POST OFFICE IN GAITHERSBURG.  GO WEST
 JV2293'FOR 0.2 MILE, KEEP RIGHT AND GO NORTHWEST ON STATE HIGHWAYS 124 AND
 JV2293'355 FOR 0.25 MILE TO POINT WHERE STATE HIGHWAY 124 TURNS LEFT,
 JV2293'CONTINUE STRAIGHT AHEAD ON FREDRICK AVENUE FOR 0.75 MILE, TURN
 JV2293'LEFT AND GO WESTERLY ON BROWN STATION ROAD FOR 0.25 MILE TO
 JV2293'JUNCTION WITH U.S. HIGHWAY 240.  TURN RIGHT ON RAMP THEN GO
 JV2293'SOUTHEAST ON U.S.  HIGHWAY 240 FOR 0.2 MILE TO POINT WHERE
 JV2293'RAILROAD CROSSES OVER HIGHWAY, CONTINUE ON FOR 0.05 MILE TO MEDIAN
 JV2293'STRIP BETWEEN LANES OF TRAFFIC, TURN LEFT ONTO NORTHBOUND LANE OF
 JV2293'TRAFFIC AND GO NORTH FOR 0.1 MILE TO STATION ON TOP ON KNOLL ON RIGHT
 JV2293'AS DESCRIBED.
 JV2293'
 JV2293'TRIANGULATION STATIONS ANCH AND WHET ARE BOTH VISIBLE FROM GROUND.
 JV2293'
 JV2293'NO AZIMUTH MARK WAS SET.
 JV2293
 JV2293                          STATION RECOVERY (1958)
 JV2293
 JV2293'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2293'1.2 MI NW FROM GAITHERSBURG.
 JV2293'ABOUT 1.2 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2293'FROM THE OVERHEAD CROSSING OF OLD U.S. HIGHWAY 240 AT
 JV2293'GAITHERSBURG, NEAR THE OVERHEAD CROSSING OF THE BALTIMORE AND
 JV2293'OHIO RAILROAD OVER THE NEW U.S. HIGHWAY 240, ON THE TOP OF A
 JV2293'CUT, ABOUT 0.1 MILE SOUTHEAST OF THE CENTER OF A LARGE
 JV2293'INTERCHANGE, ABOUT 250 FEET NORTH OF THE NORTH CORNER OF THE
 JV2293'RAILROAD BRIDGE OVER THE HIGHWAY, 84 1/2 FEET NORTH OF POWER LINE
 JV2293'POLE NO. 642955, 1 FOOT NORTH OF A METAL WITNESS POST, SET IN THE
 JV2293'TOP OF A CONCRETE POST FLUSH WITH THE GROUND AND ABOUT 25 FEET
 JV2293'ABOVE THE LEVEL OF THE HIGHWAY.
 JV2293
 JV2293                          STATION RECOVERY (1963)
 JV2293
 JV2293'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (JAN)
 JV2293'THE DISTANCE TO GAIT RM 1 IS 29.40 FEET, 8.961 METERS, NNE,
 JV2293'THE DISTANCE TO GAIT RM 2 IS 34.27 FEET, 10.445 METERS, SSW,
 JV2293'THE DISTANCE BETWEEN GAIT RM 1 AND GAIT RM 2 IS 63.52 FEET,
 JV2293'19.359 METERS.
 JV2293'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED AND FOUND
 JV2293'IN GOOD CONDITION.  THE 1958 DESCRIPTION IS ADEQUATE FOR RECOVERY.
 JV2293'THE STATION WAS NOT OCCUPIED AT THIS TIME.  THE TAPED DISTANCES TO
 JV2293'THE REFERENCE MARKS WERE RE-MEASURED AND ARE HORIZONTAL DISTANCES,
 JV2293'APPARENTLY THE 1958 MEASUREMENTS WERE SLOPE DISTANCES.  BOTH ARE
 JV2293'SHOWN.
 JV2293
 JV2293                          STATION RECOVERY (1966)
 JV2293
 JV2293'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV2293'THE STATION WAS RECOVERED AND ALL MARKS WERE FOUND IN GOOD
 JV2293'CONDITION.  DUE TO CHANGES IN THE ROADS A NEW DESCRIPTION FOLLOWS.
 JV2293'
 JV2293'THE STATION IS LOCATED 0.75 MILE WEST OF THE CENTER OF GAITHERSBURG,
 JV2293'120 YARDS NORTH OF THE RAILROAD AND JUST SOUTHEAST OF THE
 JV2293'GAITHERSBURG INTER-CHANGE ON U. S. HIGHWAY 240.
 JV2293'
 JV2293'TO REACH THE STATION FROM THE POST OFFICE IN GAITHERSBURG, GO SOUTH
 JV2293'FOR 0.15 MILE TO STATE HIGHWAY 355 AT A STOP LIGHT.  TURN RIGHT ON
 JV2293'STATE HIGHWAY 355 AND GO NORTHWEST FOR 0.55 MILE TO CHESTNUT STREET
 JV2293'ON THE LEFT.  TURN LEFT AND GO 0.15 MILE TO A SIDE ROAD RIGHT JUST
 JV2293'BEFORE REACHING RAILROAD TRACKS.  TURN RIGHT AND GO NORTHWEST ON
 JV2293'PAVED ROAD FOR 0.55 MILE TO A SIDE ROAD RIGHT AND THE END OF THE
 JV2293'PAVED ROAD.  CONTINUE STRAIGHT AHEAD FOR 0.1 MILE TO THE
 JV2293'BALTIMORE AND OHIO RAILROAD OVERPASS.  BEAR RIGHT ALONG EDGE
 JV2293'OF A BANK AND GO 0.05 MILE TO THE STATION.
 JV2293'
 JV2293'THE STATION MARK IS A STANDARD DISK, STAMPED GAIT 1958, SET IN THE
 JV2293'TOP OF A 8-INCH SQUARE CONCRETE MONUMENT THAT IS FLUSH WITH THE
 JV2293'GROUND SURFACE.  IT IS 85 FEET NORTH-NORTHEAST OF A POWER LINE
 JV2293'POLE, 82 FEET NORTHEAST OF THE EAST EDGE OF THE NORTH BOUND TRAFFIC
 JV2293'LANE OF INTERSTATE 70 S AND 0.7 FEET EAST OF A METAL WITNESS
 JV2293'SIGN POST.
 JV2293'
 JV2293'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED GAIT NO 1 1958, SET IN
 JV2293'THE TOP OF A 8-INCH SQUARE CONCRETE MONUMENT THAT IS 1-INCH BELOW
 JV2293'THE GROUND SURFACE.  IT IS 114 FEET NORTH-NORTHEAST OF A POWER LINE
 JV2293'POLE, 99 FEET NORTHEAST OF THE EAST EDGE OF THE NORTH BOUND LANE OF
 JV2293'INTER-STATE 70 S AND 29 FEET NORTH-NORTHEAST OF A METAL
 JV2293'WITNESS SIGN POST.
 JV2293'
 JV2293'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED GAIT NO 2 1958, SET IN
 JV2293'THE TOP OF A 8-INCH SQUARE CONCRETE MONUMENT THAT IS 2-INCHES BELOW
 JV2293'THE GROUND SURFACE.  IT IS 61 FEET NORTHEAST OF THE EAST EDGE OF
 JV2293'THE NORTH BOUND LANE OF INTER-STATE 70 S, 53 FEET NORTH OF A POWER
 JV2293'LINE POLE AND 34 FEET SOUTH-SOUTHEAST OF A METAL WITNESS SIGN
 JV2293'POST.
 JV2293'
 JV2293'TRIANGULATION STATIONS ANCH AND WHET ARE BOTH VISABLE FROM THE
 JV2293'GROUND.
 JV2293
 JV2293                          STATION RECOVERY (1966)
 JV2293
 JV2293'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV2293'RECOVERED IN GOOD CONDITION.
 JV2293
 JV2293                          STATION RECOVERY (1995)
 JV2293
 JV2293'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2293'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2291 ***********************************************************************
 JV2291  DESIGNATION -  GAIT RM 1
 JV2291  PID         -  JV2291
 JV2291  STATE/COUNTY-  MD/MONTGOMERY
 JV2291  COUNTRY     -  US
 JV2291  USGS QUAD   -  GAITHERSBURG (2016)
 JV2291
 JV2291                         *CURRENT SURVEY CONTROL
 JV2291  ______________________________________________________________________
 JV2291* NAD 83(1986) POSITION- 39 08 48.08   (N) 077 12 53.20   (W)   HD_HELD1
 JV2291* NAVD 88 ORTHO HEIGHT -   138.540 (meters)      454.53  (feet) ADJUSTED
 JV2291  ______________________________________________________________________
 JV2291  GEOID HEIGHT    -        -31.751 (meters)                     GEOID18
 JV2291  DYNAMIC HEIGHT  -        138.468 (meters)      454.29  (feet) COMP
 JV2291  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV2291
 JV2291  VERT ORDER      -  SECOND    CLASS 0
 JV2291
 JV2291.The horizontal coordinates were determined by differentially corrected
 JV2291.hand held GPS observations or other comparable positioning techniques
 JV2291.and have an estimated accuracy of +/- 3 meters.
 JV2291
 JV2291.The orthometric height was determined by differential leveling and
 JV2291.adjusted by the NATIONAL GEODETIC SURVEY
 JV2291.in June 1991.
 JV2291
 JV2291.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2291.GEOID18 height accuracy estimate available here.
 JV2291
 JV2291.Click photographs - Photos may exist for this station.
 JV2291
 JV2291.The dynamic height is computed by dividing the NAVD 88
 JV2291.geopotential number by the normal gravity value computed on the
 JV2291.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2291.degrees latitude (g = 980.6199 gals.).
 JV2291
 JV2291.The modeled gravity was interpolated from observed gravity values.
 JV2291
 JV2291;                    North         East    Units  Estimated Accuracy
 JV2291;SPC MD       -   164,312.3     381,433.8     MT  (+/- 3 meters HH1 GPS) 
 JV2291
 JV2291_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0860535390(NAD 83)
 JV2291
 JV2291                          SUPERSEDED SURVEY CONTROL
 JV2291
 JV2291  NGVD 29 (11/26/84)  138.750  (m)          455.22   (f) ADJUSTED    2 0
 JV2291
 JV2291.Superseded values are not recommended for survey control.
 JV2291
 JV2291.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2291.See file dsdata.pdf to determine how the superseded data were derived.
 JV2291
 JV2291_MARKER: DR = REFERENCE MARK DISK
 JV2291_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2291_STAMPING: GAIT NO 1 1958
 JV2291_MARK LOGO: CGS
 JV2291_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2291+STABILITY: SURFACE MOTION
 JV2291
 JV2291  HISTORY     - Date     Condition        Report By
 JV2291  HISTORY     - 1958     MONUMENTED       CGS
 JV2291  HISTORY     - 1966     GOOD             CGS
 JV2291  HISTORY     - 19950823 MARK NOT FOUND   USPSQD
 JV2291
 JV2291                          STATION DESCRIPTION
 JV2291
 JV2291'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2291'1.2 MI NW FROM GAITHERSBURG.
 JV2291'ABOUT 1.2 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2291'FROM THE OVERHEAD CROSSING OF OLD U.S. HIGHWAY 240 AT
 JV2291'GAITHERSBURG, NEAR THE OVERHEAD CROSSING OF THE BALTIMORE AND
 JV2291'OHIO RAILROAD OVER THE NEW U.S. HIGHWAY 240, 113 FEET NORTH OF
 JV2291'POWER LINE POLE NO. 642955, 29.6 FEET NORTHEAST OF THE STATION
 JV2291'AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV2291
 JV2291                          STATION RECOVERY (1966)
 JV2291
 JV2291'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV2291'RECOVERED IN GOOD CONDITION.
 JV2291
 JV2291                          STATION RECOVERY (1995)
 JV2291
 JV2291'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2291'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2292 ***********************************************************************
 JV2292  DESIGNATION -  GAIT RM 2
 JV2292  PID         -  JV2292
 JV2292  STATE/COUNTY-  MD/MONTGOMERY
 JV2292  COUNTRY     -  US
 JV2292  USGS QUAD   -  GAITHERSBURG (2016)
 JV2292
 JV2292                         *CURRENT SURVEY CONTROL
 JV2292  ______________________________________________________________________
 JV2292* NAD 83(1986) POSITION- 39 08 47.47   (N) 077 12 53.40   (W)   HD_HELD1
 JV2292* NAVD 88 ORTHO HEIGHT -   138.200 (meters)      453.41  (feet) ADJUSTED
 JV2292  ______________________________________________________________________
 JV2292  GEOID HEIGHT    -        -31.751 (meters)                     GEOID18
 JV2292  DYNAMIC HEIGHT  -        138.128 (meters)      453.17  (feet) COMP
 JV2292  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV2292
 JV2292  VERT ORDER      -  SECOND    CLASS 0
 JV2292
 JV2292.The horizontal coordinates were determined by differentially corrected
 JV2292.hand held GPS observations or other comparable positioning techniques
 JV2292.and have an estimated accuracy of +/- 3 meters.
 JV2292
 JV2292.The orthometric height was determined by differential leveling and
 JV2292.adjusted by the NATIONAL GEODETIC SURVEY
 JV2292.in June 1991.
 JV2292
 JV2292.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2292.GEOID18 height accuracy estimate available here.
 JV2292
 JV2292.Click photographs - Photos may exist for this station.
 JV2292
 JV2292.The dynamic height is computed by dividing the NAVD 88
 JV2292.geopotential number by the normal gravity value computed on the
 JV2292.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2292.degrees latitude (g = 980.6199 gals.).
 JV2292
 JV2292.The modeled gravity was interpolated from observed gravity values.
 JV2292
 JV2292;                    North         East    Units  Estimated Accuracy
 JV2292;SPC MD       -   164,293.5     381,428.9     MT  (+/- 3 meters HH1 GPS) 
 JV2292
 JV2292_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0860035372(NAD 83)
 JV2292
 JV2292                          SUPERSEDED SURVEY CONTROL
 JV2292
 JV2292  NGVD 29 (11/26/84)  138.409  (m)          454.10   (f) ADJUSTED    2 0
 JV2292
 JV2292.Superseded values are not recommended for survey control.
 JV2292
 JV2292.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2292.See file dsdata.pdf to determine how the superseded data were derived.
 JV2292
 JV2292_MARKER: DR = REFERENCE MARK DISK
 JV2292_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2292_STAMPING: GAIT NO 2 1958
 JV2292_MARK LOGO: CGS
 JV2292_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2292+STABILITY: SURFACE MOTION
 JV2292
 JV2292  HISTORY     - Date     Condition        Report By
 JV2292  HISTORY     - 1958     MONUMENTED       CGS
 JV2292  HISTORY     - 1966     GOOD             CGS
 JV2292  HISTORY     - 19950823 MARK NOT FOUND   USPSQD
 JV2292
 JV2292                          STATION DESCRIPTION
 JV2292
 JV2292'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2292'1.2 MI NW FROM GAITHERSBURG.
 JV2292'ABOUT 1.2 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2292'FROM THE OVERHEAD CROSSING OF OLD U.S. HIGHWAY 240 AT
 JV2292'GAITHERSBURG, NEAR THE OVERHEAD CROSSING OF THE BALTIMORE AND
 JV2292'OHIO RAILROAD OVER THE NEW U.S. HIGHWAY 240, ABOUT 215 FEET NORTH
 JV2292'OF THE NORTH CORNER OF THE BRIDGE OVER THE HIGHWAY, 50 1/2 FEET
 JV2292'NORTH OF POWER LINE POLE NO. 642955, 34.4 FEET SOUTHWEST OF THE
 JV2292'STATION, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV2292
 JV2292                          STATION RECOVERY (1966)
 JV2292
 JV2292'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV2292'RECOVERED IN GOOD CONDITION.
 JV2292
 JV2292                          STATION RECOVERY (1995)
 JV2292
 JV2292'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2292'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6547 ***********************************************************************
 JV6547  DESIGNATION -  GAITHERSBURG 2
 JV6547  PID         -  JV6547
 JV6547  STATE/COUNTY-  MD/MONTGOMERY
 JV6547  COUNTRY     -  US
 JV6547  USGS QUAD   -  GAITHERSBURG (2016)
 JV6547
 JV6547                         *CURRENT SURVEY CONTROL
 JV6547  ______________________________________________________________________
 JV6547* NAD 83(1993) POSITION- 39 08 28.70526(N) 077 11 18.43164(W)   ADJUSTED
 JV6547* NAVD 88 ORTHO HEIGHT -   158.79  (meters)      521.0   (feet) RESET
 JV6547  ______________________________________________________________________
 JV6547  GEOID HEIGHT    -        -31.733 (meters)                     GEOID18
 JV6547  LAPLACE CORR    -          0.66  (seconds)                    DEFLEC18
 JV6547  HORZ ORDER      -  THIRD
 JV6547  VERT ORDER      -  THIRD
 JV6547
 JV6547.The horizontal coordinates were established by classical geodetic methods
 JV6547.and adjusted by the National Geodetic Survey in November 1994.
 JV6547
 JV6547.The orthometric height was computed from unverified reset data.
 JV6547
 JV6547.No vertical observational check was made to the station.
 JV6547
 JV6547.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6547.GEOID18 height accuracy estimate available here.
 JV6547
 JV6547.Click photographs - Photos may exist for this station.
 JV6547
 JV6547.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6547
 JV6547. The following values were computed from the NAD 83(1993) position.
 JV6547
 JV6547;                    North         East     Units Scale Factor Converg.
 JV6547;SPC MD       -   163,709.789   383,708.149   MT  0.99996056   -0 07 05.8
 JV6547;SPC MD       -   537,104.53  1,258,882.49   sFT  0.99996056   -0 07 05.8
 JV6547;UTM  18      - 4,334,738.435   310,866.062   MT  1.00004048   -1 22 54.6
 JV6547
 JV6547!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6547!SPC MD       -   0.99998007  x   0.99996056  =   0.99994063
 JV6547!UTM  18      -   0.99998007  x   1.00004048  =   1.00002054
 JV6547
 JV6547:                Primary Azimuth Mark                     Grid Az
 JV6547:SPC MD       -  GAITHERSBURG 2 AZ MK                     108 02 38.0
 JV6547:UTM  18      -  GAITHERSBURG 2 AZ MK                     109 18 26.8
 JV6547
 JV6547_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1086634738(NAD 83)
 JV6547
 JV6547|---------------------------------------------------------------------|
 JV6547| PID    Reference Object                     Distance      Geod. Az  |
 JV6547|                                                           dddmmss.s |
 JV6547| JV6897 GAITHERSBURG 2 AZ MK                APPROX. 0.6 KM 1075532.2 |
 JV6547| JV4410 GAITHERSBURG RM A                     9.801 METERS 32111     |
 JV6547| JV2608 GAITHERSBURG                         33.646 METERS 34748     |
 JV6547|---------------------------------------------------------------------|
 JV6547
 JV6547                          SUPERSEDED SURVEY CONTROL
 JV6547
 JV6547  NAD 83(1991)-  39 08 28.70484(N)    077 11 18.43184(W) AD(       ) 3
 JV6547  NAD 83(1986)-  39 08 28.70476(N)    077 11 18.44189(W) AD(       ) 3
 JV6547  NGVD 29 (11/18/05)  159.00   (m)          521.7    (f) RESET       3  
 JV6547  NGVD 29             159.00   (m)          521.7    (f) LEVELING    3  
 JV6547
 JV6547.Superseded values are not recommended for survey control.
 JV6547
 JV6547.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6547.See file dsdata.pdf to determine how the superseded data were derived.
 JV6547
 JV6547_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6547_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6547_STAMPING: GAITHERSBURG 2 1986
 JV6547_MARK LOGO: NGS
 JV6547_PROJECTION: FLUSH
 JV6547_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6547_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6547+STABILITY: SURFACE MOTION
 JV6547
 JV6547  HISTORY     - Date     Condition        Report By
 JV6547  HISTORY     - 1986     MONUMENTED       NGS
 JV6547  HISTORY     - 1986     GOOD             NGS
 JV6547  HISTORY     - 19950823 MARK NOT FOUND   USPSQD
 JV6547
 JV6547                          STATION DESCRIPTION
 JV6547
 JV6547'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 JV6547'THE STATION IS LOCATED ABOUT 0.4 KM (0.25 MI) EAST OF THE CENTER OF
 JV6547'GAITHERSBURG.  OWNERSHIP--RAILROAD RIGHT-OF-WAY.
 JV6547'
 JV6547'TO REACH THE STATION FROM THE POST OFFICE AT GAITHERSBURG, GO NORTH
 JV6547'FOR 0.15 KM (0.1 MI) ON SUMMIT AVENUE TO A CROSSROADS.  TURN RIGHT AND
 JV6547'GO EAST FOR 0.5 KM (0.3 MI) ON STATE HIGHWAY 124 (DIAMOND AVENUE) TO
 JV6547'THE STATION ON THE RIGHT BEHIND A BUILDING NUMBERED 419.
 JV6547'
 JV6547'THE STATION IS A STANDARD NGS DISK STAMPED ---GAITHERSBURG 2 1986---,
 JV6547'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 25 CM IN DIAMETER FLUSH
 JV6547'WITH GROUND.  LOCATED 76.0 METERS (249.5 FT) SOUTH FROM THE CENTER OF
 JV6547'STATE HIGHWAY 124 (DIAMOND AVENUE)  5 METERS (16.4 FT) NORTH FROM THE
 JV6547'NORTH RAIL OF THE RAILROAD, 14.9 METERS (48.9 FT) SOUTHWEST FROM THE
 JV6547'SOUTHWEST CORNER OF A BUILDING NUMBERED 421 DIAMOND AVENUE, 6.5 METERS
 JV6547'(21.2 FT) SOUTHWEST FROM A MANHOLE, 1.9 METERS (6.2 FT) SOUTHWEST FROM
 JV6547'THE SOUTHWEST CORNER OF A PAVED PARKING AREA, 15.1 METERS (49.4 FT)
 JV6547'SOUTH FROM THE SOUTHEAST CORNER OF THE BUILDING AT 419 DIAMOND AVENUE,
 JV6547'0.4 METERS (1.4 FT) EAST-SOUTHEAST FROM THE SOUTHEAST CORNER OF A
 JV6547'CHAIN LINK FENCE AND 0.3 METERS (0.9 FT) SOUTH FROM A CARSONITE
 JV6547'WITNESS POST.  THE UNDERGROUND MARK IS A STANDARD NGS DISK STAMPED
 JV6547'---GAITHERSBURG 2 1986---, SET INTO AN IRREGULAR MASS OF CONCRETE 1
 JV6547'METERS BELOW THE SURFACE.
 JV6547
 JV6547                          STATION RECOVERY (1986)
 JV6547
 JV6547'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 JV6547'0.7 KM (0.45 MI) EAST FROM GAITHERSBURG.  FROM THE POST OFFICE IN
 JV6547'GAITHERSBURG, GO NORTH ON SUMMIT AVENUE FOR 0.15 KM (0.10 MI) TO A
 JV6547'CROSSROADS.  TURN RIGHT AND GO EAST ON STATE HIGHWAY 124 (DIAMOND
 JV6547'AVENUE) FOR 0.5 KM (0.30 MI) TO THE MARK ON THE RIGHT BEHIND A LARGE
 JV6547'BUILDING, 76.0 M (249.3 FT) SOUTH FROM THE CENTER OF STATE HIGHWAY
 JV6547'124, 5.0 M (16.4 FT) NORTH FROM THE NORTH RAIL OF A DOUBLE RAILROAD
 JV6547'TRACKS, 14.9 M (48.9 FT) SOUTHWEST FROM THE SOUTHWEST CORNER OF A
 JV6547'BUILDING AT 421 DIAMOND AVENUE, 6.5 M (21.3 FT) SOUTHWEST FROM THE
 JV6547'CENTER OF A MANHOLE, 1.9 M (6.2 FT) SOUTHWEST FROM THE SOUTHWEST
 JV6547'CORNER OF A PARKING AREA AND 0.3 M (1.0 FT) SOUTH FROM A CARSONITE
 JV6547'WITNESS POST.  THE MARK IS 1.1 METERS  N FROM  A WITNESS POST THE MARK
 JV6547'IS 1.0 M ABOVE RAILROAD.
 JV6547
 JV6547                          STATION RECOVERY (1995)
 JV6547
 JV6547'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6547'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6897 ***********************************************************************
 JV6897  DESIGNATION -  GAITHERSBURG 2 AZ MK
 JV6897  PID         -  JV6897
 JV6897  STATE/COUNTY-  MD/MONTGOMERY
 JV6897  COUNTRY     -  US
 JV6897  USGS QUAD   -  GAITHERSBURG (2016)
 JV6897
 JV6897                         *CURRENT SURVEY CONTROL
 JV6897  ______________________________________________________________________
 JV6897* NAD 83(1993) POSITION- 39 08 22.36562(N) 077 10 53.26889(W)   ADJUSTED
 JV6897* NAVD 88 ORTHO HEIGHT -   158.3   (meters)      519.    (feet) VERTCON3
 JV6897  ______________________________________________________________________
 JV6897  GEOID HEIGHT    -        -31.730 (meters)                     GEOID18
 JV6897  LAPLACE CORR    -          0.41  (seconds)                    DEFLEC18
 JV6897  HORZ ORDER      -  THIRD
 JV6897
 JV6897.The horizontal coordinates were established by classical geodetic methods
 JV6897.and adjusted by the National Geodetic Survey in November 1994.
 JV6897
 JV6897.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6897.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6897
 JV6897.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6897.GEOID18 height accuracy estimate available here.
 JV6897
 JV6897.Click photographs - Photos may exist for this station.
 JV6897
 JV6897.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6897
 JV6897. The following values were computed from the NAD 83(1993) position.
 JV6897
 JV6897;                    North         East     Units Scale Factor Converg.
 JV6897;SPC MD       -   163,513.069   384,312.018   MT  0.99996041   -0 06 50.0
 JV6897;SPC MD       -   536,459.13  1,260,863.68   sFT  0.99996041   -0 06 50.0
 JV6897;UTM  18      - 4,334,528.431   311,465.493   MT  1.00003769   -1 22 38.5
 JV6897
 JV6897!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6897!SPC MD       -   0.99998014  x   0.99996041  =   0.99994055
 JV6897!UTM  18      -   0.99998014  x   1.00003769  =   1.00001783
 JV6897
 JV6897_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1146534528(NAD 83)
 JV6897
 JV6897                          SUPERSEDED SURVEY CONTROL
 JV6897
 JV6897  NAD 83(1991)-  39 08 22.36519(N)    077 10 53.26910(W) AD(       ) 3
 JV6897  NAD 83(1986)-  39 08 22.36523(N)    077 10 53.27912(W) AD(       ) 3
 JV6897  NGVD 29 (11/20/91)  158.5    (m)          520.     (f) VERT ANG       
 JV6897
 JV6897.Superseded values are not recommended for survey control.
 JV6897
 JV6897.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6897.See file dsdata.pdf to determine how the superseded data were derived.
 JV6897
 JV6897_MARKER: DZ = AZIMUTH MARK DISK
 JV6897_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6897_SP_SET: CURB
 JV6897_STAMPING: GAITHERSBURG 2 1986
 JV6897_MARK LOGO: NGS
 JV6897_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6897_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6897_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6897+SATELLITE: SATELLITE OBSERVATIONS - November 15, 2015
 JV6897
 JV6897  HISTORY     - Date     Condition        Report By
 JV6897  HISTORY     - 1986     MONUMENTED       NGS
 JV6897  HISTORY     - 19950823 GOOD             USPSQD
 JV6897  HISTORY     - 20151115 GOOD             BASE9
 JV6897
 JV6897                          STATION DESCRIPTION
 JV6897
 JV6897'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 JV6897'THE STATION IS LOCATED ABOUT 1.1 KM (0.7 MI)
 JV6897'EAST OF THE CENTER OF GAITHERSBURG AND ALONG THE NORTH SIDE OF
 JV6897'STATE HIGHWAY 124 (DIAMOND AVENUE).
 JV6897'OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV6897'
 JV6897'TO REACH THE STATION FROM THE POST OFFICE AT GAITHERSBURG GO
 JV6897'NORTH FOR 0.15 KM (0.1 MI) ON SUMMIT AVENUE TO A CROSSROADS.
 JV6897'TURN RIGHT AND GO EAST FOR 1.2 KM (0.75 MI) ON STATE HIGHWAY 124
 JV6897'(DIAMOND AVENUE) TO THE STATION ON THE LEFT AT THE ENTRANCE TO THE
 JV6897'GAITHERSBURG FORD TRACTOR COMPANY SALES BUILDING.
 JV6897'
 JV6897'THE STATION IS A STANDARD NGS DISK
 JV6897'STAMPED---GAITHERSBURG 2 1986---,
 JV6897'SET INTO A DRILL HOLE IN A CURB ALONG THE WEST SIDE OF A ROAD
 JV6897'LEADING TO THE GAITHERSBURG FORD TRACTOR COMPANY SALES BUILDING.
 JV6897'4.1 METERS (13.3 FT) SOUTH FROM THE CENTER OF A UTILITY MANHOLE,
 JV6897'8.8 METERS (29.0 FT) NORTHEAST FROM THE CENTER OF STATE HIGHWAY 124
 JV6897'(DIAMOND AVENUE),
 JV6897'7.3 METERS (24.0 FT) SOUTHWEST FROM THE CENTER OF THE ENTRANCE ROAD
 JV6897'AND
 JV6897'40.1 METERS (131.5 FT) WEST-SOUTHWEST FROM THE SOUTHWEST CORNER OF
 JV6897'THE FORD TRACTOR BUILDING.
 JV6897
 JV6897                          STATION RECOVERY (1995)
 JV6897
 JV6897'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV6897'RECOVERED IN GOOD CONDITION.
 JV6897
 JV6897                          STATION RECOVERY (2015)
 JV6897
 JV6897'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2015 (DRD)
 JV6897'GAITHERSBURG FORD TRACTOR COMPANY MENTIONED IN THE 1986 DESCRIPTION IS
 JV6897'NOW GAITHERSBURG EQUIPMENT CO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AF9522 ***********************************************************************
 AF9522  HT_MOD      -  This is a Height Modernization Survey Station.
 AF9522  CORS        -  This is a GPS Continuously Operating Reference Station.
 AF9522  DESIGNATION -  GAITHERSBURG CORS ARP
 AF9522  CORS_ID     -  GAIT
 AF9522  PID         -  AF9522
 AF9522  STATE/COUNTY-  MD/MONTGOMERY
 AF9522  COUNTRY     -  US
 AF9522  USGS QUAD   -  GAITHERSBURG (2016)
 AF9522
 AF9522                         *CURRENT SURVEY CONTROL
 AF9522  ______________________________________________________________________
 AF9522* NAD 83(2011) POSITION- 39 08 02.34010(N) 077 13 15.51829(W)   ADJUSTED
 AF9522* NAD 83(2011) ELLIP HT-   108.923 (meters)        (04/??/25)   ADJUSTED
 AF9522* NAD 83(2011) EPOCH   -  2010.00
 AF9522* NAVD 88 ORTHO HEIGHT -   140.66  (meters)      461.5   (feet) GPS OBS
 AF9522  ______________________________________________________________________
 AF9522  NAVD 88 orthometric height was determined with an earlier geoid model
 AF9522  GEOID HEIGHT    -        -31.746 (meters)                     GEOID18
 AF9522  NAD 83(2011) X  -  1,095,790.791 (meters)                     COMP
 AF9522  NAD 83(2011) Y  - -4,831,328.043 (meters)                     COMP
 AF9522  NAD 83(2011) Z  -  4,003,934.391 (meters)                     COMP
 AF9522
 AF9522  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AF9522  Standards:
 AF9522         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AF9522            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AF9522  -------------------------------------------------------------------
 AF9522  NETWORK    0.22   0.72           0.11   0.06   0.37      0.14305200
 AF9522  -------------------------------------------------------------------
 AF9522
 AF9522.The coordinates were established by GPS observations
 AF9522.and adjusted by the National Geodetic Survey in April 2025.
 AF9522
 AF9522.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AF9522.been affixed to the stable North American Tectonic Plate. 
 AF9522
 AF9522.The coordinates are valid at the epoch date displayed above
 AF9522.which is a decimal equivalence of Year/Month/Day.
 AF9522
 AF9522.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 AF9522.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 AF9522.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 AF9522.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 AF9522.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 AF9522.published epoch of 2010.00.
 AF9522
 AF9522.Additional information on MYCS is available at:
 AF9522.https://geodesy.noaa.gov/CORS/index.shtml
 AF9522
 AF9522.The orthometric height was determined by GPS observations and a
 AF9522.high-resolution geoid model using precise GPS observation and
 AF9522.processing techniques.
 AF9522
 AF9522.Significant digits in the geoid height do not necessarily reflect accuracy.
 AF9522.GEOID18 height accuracy estimate available here.
 AF9522
 AF9522.The PID for the CORS L1 Phase Center is DJ3083.
 AF9522
 AF9522.Click photographs - Photos may exist for this station.
 AF9522
 AF9522.The XYZ, and position/ellipsoidal ht. are equivalent.
 AF9522
 AF9522.The ellipsoidal height was determined by GPS observations
 AF9522.and is referenced to NAD 83.
 AF9522
 AF9522. The following values were computed from the NAD 83(2011) position.
 AF9522
 AF9522;                    North         East     Units Scale Factor Converg.
 AF9522;SPC MD       -   162,903.071   380,894.469   MT  0.99995997   -0 08 19.3
 AF9522;SPC MD       -   534,457.83  1,249,651.27   sFT  0.99995997   -0 08 19.3
 AF9522;UTM  18      - 4,333,993.892   308,035.031   MT  1.00005376   -1 24 07.8
 AF9522
 AF9522!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AF9522!SPC MD       -   0.99998291  x   0.99995997  =   0.99994288
 AF9522!UTM  18      -   0.99998291  x   1.00005376  =   1.00003667
 AF9522
 AF9522_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0803533993(NAD 83)
 AF9522
 AF9522                          SUPERSEDED SURVEY CONTROL
 AF9522
 AF9522  NAD 83(2011)-  39 08 02.34020(N)    077 13 15.51824(W) AD(2010.00) c
 AF9522  ELLIP H (06/??/19)  108.917  (m)                       GP(2010.00) c c
 AF9522  NAD 83(2011)-  39 08 02.34023(N)    077 13 15.51810(W) AD(2010.00) c
 AF9522  NAD 83(2011)-  39 08 02.34022(N)    077 13 15.51820(W) AD(2010.00) c
 AF9522  ELLIP H (08/??/11)  108.914  (m)                       GP(2010.00) c c
 AF9522  NAD 83(2007)-  39 08 02.34046(N)    077 13 15.51884(W) AD(2002.00) c
 AF9522  NAD 83(CORS)-  39 08 02.34046(N)    077 13 15.51884(W) AD(2002.00) c
 AF9522  ELLIP H (03/??/02)  108.944  (m)                       GP(2002.00) c c
 AF9522  NAD 83(CORS)-  39 08 02.34059(N)    077 13 15.51925(W) AD(1997.00) c
 AF9522  ELLIP H (01/??/01)  108.937  (m)                       GP(1997.00) c c
 AF9522  NAD 83(CORS)-  39 08 02.34060(N)    077 13 15.51927(W) AD(1997.00) c
 AF9522  ELLIP H (04/??/96)  108.937  (m)                       GP(1997.00) c c
 AF9522  NAD 83(CORS)-  39 08 02.34060(N)    077 13 15.51927(W) AD(1996.00) c
 AF9522  ELLIP H (04/??/96)  108.937  (m)                       GP(1996.00) c c
 AF9522
 AF9522.Superseded values are not recommended for survey control.
 AF9522
 AF9522.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AF9522.See file dsdata.pdf to determine how the superseded data were derived.
 AF9522
 AF9522_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 AF9522
 AF9522                          STATION DESCRIPTION
 AF9522
 AF9522'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 AF9522'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 AF9522'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 AF9522'AND LOG FILES ACCESSIBLE AT:
 AF9522'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9601 ***********************************************************************
 AA9601  DESIGNATION -  GAITHERSBURG CORS GROUNDPLANE
 AA9601  PID         -  AA9601
 AA9601  STATE/COUNTY-  MD/MONTGOMERY
 AA9601  COUNTRY     -  US
 AA9601  USGS QUAD   -  GAITHERSBURG (2016)
 AA9601
 AA9601                         *CURRENT SURVEY CONTROL
 AA9601  ______________________________________________________________________
 AA9601* NAD 83(2011) POSITION- 39 08 02.34032(N) 077 13 15.51801(W)   ADJUSTED
 AA9601* NAD 83(2011) ELLIP HT-   108.901 (meters)        (06/27/12)   ADJUSTED
 AA9601* NAD 83(2011) EPOCH   -  2010.00
 AA9601* NAVD 88 ORTHO HEIGHT -   140.7   (meters)      462.    (feet) GPS OBS
 AA9601  ______________________________________________________________________
 AA9601  NAVD 88 orthometric height was determined with geoid model    G96SSS
 AA9601  GEOID HEIGHT    -        -32.637 (meters)                     G96SSS
 AA9601  GEOID HEIGHT    -        -31.746 (meters)                     GEOID18
 AA9601  NAD 83(2011) X  -  1,095,790.793 (meters)                     COMP
 AA9601  NAD 83(2011) Y  - -4,831,328.021 (meters)                     COMP
 AA9601  NAD 83(2011) Z  -  4,003,934.383 (meters)                     COMP
 AA9601  LAPLACE CORR    -          1.50  (seconds)                    DEFLEC18
 AA9601
 AA9601  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9601  Standards:
 AA9601         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9601            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9601  -------------------------------------------------------------------
 AA9601  NETWORK    0.48   1.35           0.18   0.21   0.69     -0.03143942
 AA9601  -------------------------------------------------------------------
 AA9601  Click here for local accuracies and other accuracy information.
 AA9601
 AA9601.The horizontal coordinates were established by GPS observations
 AA9601.and adjusted by the National Geodetic Survey in June 2012.
 AA9601
 AA9601.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9601.been affixed to the stable North American tectonic plate. See 
 AA9601.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9601
 AA9601.The horizontal coordinates are valid at the epoch date displayed above
 AA9601.which is a decimal equivalence of Year/Month/Day.
 AA9601
 AA9601.The orthometric height was determined by GPS observations and a
 AA9601.high-resolution geoid model.
 AA9601
 AA9601.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9601.GEOID18 height accuracy estimate available here.
 AA9601
 AA9601.Click photographs - Photos may exist for this station.
 AA9601
 AA9601.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9601
 AA9601.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9601
 AA9601.The ellipsoidal height was determined by GPS observations
 AA9601.and is referenced to NAD 83.
 AA9601
 AA9601. The following values were computed from the NAD 83(2011) position.
 AA9601
 AA9601;                    North         East     Units Scale Factor Converg.
 AA9601;SPC MD       -   162,903.077   380,894.476   MT  0.99995997   -0 08 19.3
 AA9601;SPC MD       -   534,457.85  1,249,651.29   sFT  0.99995997   -0 08 19.3
 AA9601;UTM  18      - 4,333,993.899   308,035.038   MT  1.00005376   -1 24 07.8
 AA9601
 AA9601!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9601!SPC MD       -   0.99998291  x   0.99995997  =   0.99994289
 AA9601!UTM  18      -   0.99998291  x   1.00005376  =   1.00003667
 AA9601
 AA9601_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0803533993(NAD 83)
 AA9601
 AA9601                          SUPERSEDED SURVEY CONTROL
 AA9601
 AA9601  NAD 83(2007)-  39 08 02.34037(N)    077 13 15.51857(W) AD(2002.00) 0
 AA9601  ELLIP H (02/10/07)  108.920  (m)                       GP(2002.00)    
 AA9601  ELLIP H (08/30/02)  108.923  (m)                       GP(       ) 4 2
 AA9601  NAD 83(1995)-  39 08 02.34070(N)    077 13 15.51926(W) AD(       ) A
 AA9601  ELLIP H (09/11/96)  108.949  (m)                       GP(       ) 3 1
 AA9601  NAD 83(1991)-  39 08 02.34049(N)    077 13 15.51918(W) AD(       ) 1
 AA9601  ELLIP H (01/29/96)  108.949  (m)                       GP(       ) 4 2
 AA9601  NAVD 88 (09/11/96)  140.5    (m)  UNKNOWN  model used  GPS OBS        
 AA9601  NAVD 88 (01/29/96)  140.7    (m)  GEOID93  model used  GPS OBS        
 AA9601
 AA9601.Superseded values are not recommended for survey control.
 AA9601
 AA9601.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9601.See file dsdata.pdf to determine how the superseded data were derived.
 AA9601
 AA9601_MARKER: Z = SEE DESCRIPTION
 AA9601_SETTING: 0 = UNSPECIFIED SETTING
 AA9601_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9601_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 AA9601+STABILITY: POSITION/ELEVATION WELL
 AA9601_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9601+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 AA9601
 AA9601  HISTORY     - Date     Condition        Report By
 AA9601  HISTORY     - 1995     MONUMENTED       NGS
 AA9601  HISTORY     - 20050303 GOOD             USPSQD
 AA9601
 AA9601                          STATION DESCRIPTION
 AA9601
 AA9601'DESCRIBED BY NATIONAL GEODETIC SURVEY 1995 (EEC)
 AA9601'THE STATION IS THE GROUNDPLANE OR THE CORS STATION GAITHERSBURG WHICH
 AA9601'IS LOCATED AT NIST. THE CORS COMPLETE NAME IS GAITHERSBURG CORS-L1 PHS
 AA9601'CTR.
 AA9601
 AA9601                          STATION RECOVERY (2005)
 AA9601
 AA9601'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 AA9601'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4413 ***********************************************************************
 JV4413  DESIGNATION -  GAITHERSBURG EPWORTH METH CH
 JV4413  PID         -  JV4413
 JV4413  STATE/COUNTY-  MD/MONTGOMERY
 JV4413  COUNTRY     -  US
 JV4413  USGS QUAD   -  GAITHERSBURG (2016)
 JV4413
 JV4413                         *CURRENT SURVEY CONTROL
 JV4413  ______________________________________________________________________
 JV4413* NAD 83(1993) POSITION- 39 07 39.02502(N) 077 11 07.84844(W)   ADJUSTED
 JV4413  ______________________________________________________________________
 JV4413  GEOID HEIGHT    -        -31.722 (meters)                     GEOID18
 JV4413  LAPLACE CORR    -          0.47  (seconds)                    DEFLEC18
 JV4413  HORZ ORDER      -  THIRD
 JV4413
 JV4413.The horizontal coordinates were established by classical geodetic methods
 JV4413.and adjusted by the National Geodetic Survey in November 1994.
 JV4413
 JV4413.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4413.GEOID18 height accuracy estimate available here.
 JV4413
 JV4413.Click photographs - Photos may exist for this station.
 JV4413
 JV4413.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4413
 JV4413. The following values were computed from the NAD 83(1993) position.
 JV4413
 JV4413;                    North         East     Units Scale Factor Converg.
 JV4413;SPC MD       -   162,177.276   383,959.181   MT  0.99995947   -0 06 59.2
 JV4413;SPC MD       -   532,076.61  1,259,706.08   sFT  0.99995947   -0 06 59.2
 JV4413;UTM  18      - 4,333,200.638   311,083.261   MT  1.00003947   -1 22 46.5
 JV4413
 JV4413_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1108333200(NAD 83)
 JV4413
 JV4413                          SUPERSEDED SURVEY CONTROL
 JV4413
 JV4413  NAD 83(1991)-  39 07 39.02458(N)    077 11 07.84873(W) AD(       ) 3
 JV4413  NAD 83(1986)-  39 07 39.02458(N)    077 11 07.85879(W) AD(       ) 3
 JV4413  NAD 27      -  39 07 38.63737(N)    077 11 08.92214(W) AD(       ) 3
 JV4413
 JV4413.Superseded values are not recommended for survey control.
 JV4413
 JV4413.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4413.See file dsdata.pdf to determine how the superseded data were derived.
 JV4413
 JV4413_MARKER: 90 = CHURCH SPIRE
 JV4413_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4413+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4413
 JV4413  HISTORY     - Date     Condition        Report By
 JV4413  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4413  HISTORY     - 19950823 GOOD             USPSQD
 JV4413  HISTORY     - 20031201 GOOD             USPSQD
 JV4413  HISTORY     - 20050303 GOOD             USPSQD
 JV4413
 JV4413                          STATION DESCRIPTION
 JV4413
 JV4413'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4413'THE STATION IS THE CENTER OF THE TOP OF THE GOLD CROSS ON TOP
 JV4413'OF THE SPIRE OF THE EPWORTH METHODIST CHURCH.  IT IS ABOUT 79
 JV4413'FEET ABOVE THE GROUND.
 JV4413'
 JV4413'THE STATION IS LOCATED AT THE INTERSECTION OF STATE ROUTE 355
 JV4413'AND ROSEMONT DRIVE.
 JV4413
 JV4413                          STATION RECOVERY (1995)
 JV4413
 JV4413'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4413'RECOVERED IN GOOD CONDITION.
 JV4413
 JV4413                          STATION RECOVERY (2003)
 JV4413
 JV4413'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV4413'RECOVERED IN GOOD CONDITION.
 JV4413
 JV4413                          STATION RECOVERY (2005)
 JV4413
 JV4413'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4413'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4418 ***********************************************************************
 JV4418  DESIGNATION -  GAITHERSBURG GRACE METH CHURCH
 JV4418  PID         -  JV4418
 JV4418  STATE/COUNTY-  MD/MONTGOMERY
 JV4418  COUNTRY     -  US
 JV4418  USGS QUAD   -  GAITHERSBURG (2016)
 JV4418
 JV4418                         *CURRENT SURVEY CONTROL
 JV4418  ______________________________________________________________________
 JV4418* NAD 83(1993) POSITION- 39 08 37.44850(N) 077 12 02.96352(W)   ADJUSTED
 JV4418  ______________________________________________________________________
 JV4418  GEOID HEIGHT    -        -31.740 (meters)                     GEOID18
 JV4418  LAPLACE CORR    -          1.01  (seconds)                    DEFLEC18
 JV4418  HORZ ORDER      -  THIRD
 JV4418
 JV4418.The horizontal coordinates were established by classical geodetic methods
 JV4418.and adjusted by the National Geodetic Survey in November 1994.
 JV4418
 JV4418.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4418.GEOID18 height accuracy estimate available here.
 JV4418
 JV4418.Click photographs - Photos may exist for this station.
 JV4418
 JV4418.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4418
 JV4418. The following values were computed from the NAD 83(1993) position.
 JV4418
 JV4418;                    North         East     Units Scale Factor Converg.
 JV4418;SPC MD       -   163,981.685   382,639.356   MT  0.99996075   -0 07 33.8
 JV4418;SPC MD       -   537,996.58  1,255,375.95   sFT  0.99996075   -0 07 33.8
 JV4418;UTM  18      - 4,335,033.860   309,803.437   MT  1.00004544   -1 23 23.0
 JV4418
 JV4418_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0980335033(NAD 83)
 JV4418
 JV4418                          SUPERSEDED SURVEY CONTROL
 JV4418
 JV4418  NAD 83(1991)-  39 08 37.44807(N)    077 12 02.96373(W) AD(       ) 3
 JV4418  NAD 83(1986)-  39 08 37.44798(N)    077 12 02.97387(W) AD(       ) 3
 JV4418  NAD 27      -  39 08 37.06125(N)    077 12 04.03567(W) AD(       ) 3
 JV4418
 JV4418.Superseded values are not recommended for survey control.
 JV4418
 JV4418.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4418.See file dsdata.pdf to determine how the superseded data were derived.
 JV4418
 JV4418_MARKER: 90 = CHURCH SPIRE
 JV4418_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4418+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4418
 JV4418  HISTORY     - Date     Condition        Report By
 JV4418  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4418  HISTORY     - 19950823 GOOD             USPSQD
 JV4418  HISTORY     - 20031201 GOOD             USPSQD
 JV4418  HISTORY     - 20050303 GOOD             USPSQD
 JV4418
 JV4418                          STATION DESCRIPTION
 JV4418
 JV4418'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4418'THE STATION IS THE APEX OF THE GAITHERSBURG GRACE METHODIST CHURCH
 JV4418'SPIRE.  IT IS ABOUT 78 FEET ABOVE THE GROUND.
 JV4418'
 JV4418'THE STATION IS LOCATED AT THE JUNCTION OF STATE HIGHWAY 355 AND
 JV4418'STATE HIGHWAY 124 IN GAITHERSBURG.
 JV4418
 JV4418                          STATION RECOVERY (1995)
 JV4418
 JV4418'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4418'RECOVERED IN GOOD CONDITION.
 JV4418
 JV4418                          STATION RECOVERY (2003)
 JV4418
 JV4418'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV4418'RECOVERED IN GOOD CONDITION.
 JV4418
 JV4418                          STATION RECOVERY (2005)
 JV4418
 JV4418'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4418'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4127 ***********************************************************************
 JV4127  DESIGNATION -  GAITHERSBURG OBS MAG STA RESET
 JV4127  PID         -  JV4127
 JV4127  STATE/COUNTY-  MD/MONTGOMERY
 JV4127  COUNTRY     -  US
 JV4127  USGS QUAD   -  GAITHERSBURG (2016)
 JV4127
 JV4127                         *CURRENT SURVEY CONTROL
 JV4127  ______________________________________________________________________
 JV4127* NAD 83(1993) POSITION- 39 08 10.93044(N) 077 11 57.28677(W)   ADJUSTED
 JV4127* NAVD 88 ORTHO HEIGHT -   153.234 (meters)      502.74  (feet) ADJUSTED
 JV4127  ______________________________________________________________________
 JV4127  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 JV4127  LAPLACE CORR    -          0.95  (seconds)                    DEFLEC18
 JV4127  DYNAMIC HEIGHT  -        153.153 (meters)      502.47  (feet) COMP
 JV4127  MODELED GRAVITY -    980,097.9   (mgal)                       NAVD 88
 JV4127
 JV4127  HORZ ORDER      -  SECOND
 JV4127  VERT ORDER      -  FIRST     CLASS II
 JV4127
 JV4127.The horizontal coordinates were established by classical geodetic methods
 JV4127.and adjusted by the National Geodetic Survey in November 1994.
 JV4127
 JV4127.The orthometric height was determined by differential leveling and
 JV4127.adjusted by the NATIONAL GEODETIC SURVEY
 JV4127.in June 1991.
 JV4127
 JV4127.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4127.GEOID18 height accuracy estimate available here.
 JV4127
 JV4127.Click photographs - Photos may exist for this station.
 JV4127
 JV4127.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4127
 JV4127.The dynamic height is computed by dividing the NAVD 88
 JV4127.geopotential number by the normal gravity value computed on the
 JV4127.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV4127.degrees latitude (g = 980.6199 gals.).
 JV4127
 JV4127.The modeled gravity was interpolated from observed gravity values.
 JV4127
 JV4127. The following values were computed from the NAD 83(1993) position.
 JV4127
 JV4127;                    North         East     Units Scale Factor Converg.
 JV4127;SPC MD       -   163,163.647   382,773.888   MT  0.99996016   -0 07 30.2
 JV4127;SPC MD       -   535,312.73  1,255,817.33   sFT  0.99996016   -0 07 30.2
 JV4127;UTM  18      - 4,334,212.984   309,919.907   MT  1.00004490   -1 23 18.6
 JV4127
 JV4127!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4127!SPC MD       -   0.99998094  x   0.99996016  =   0.99994110
 JV4127!UTM  18      -   0.99998094  x   1.00004490  =   1.00002584
 JV4127
 JV4127_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0991934212(NAD 83)
 JV4127
 JV4127                          SUPERSEDED SURVEY CONTROL
 JV4127
 JV4127  NAD 83(1991)-  39 08 10.93004(N)    077 11 57.28687(W) AD(       ) 2
 JV4127  NAD 83(1986)-  39 08 10.92986(N)    077 11 57.29700(W) AD(       ) 2
 JV4127
 JV4127.Superseded values are not recommended for survey control.
 JV4127
 JV4127.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4127.See file dsdata.pdf to determine how the superseded data were derived.
 JV4127
 JV4127_MARKER: DM = MAGNETIC STATION DISK
 JV4127_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4127_STAMPING: 1900 1935
 JV4127_MARK LOGO: CGS
 JV4127_PROJECTION: FLUSH
 JV4127_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4127+STABILITY: SURFACE MOTION
 JV4127_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4127+SATELLITE: SATELLITE OBSERVATIONS - July 25, 1990
 JV4127
 JV4127  HISTORY     - Date     Condition        Report By
 JV4127  HISTORY     - 1935     MONUMENTED       CGS
 JV4127  HISTORY     - 1966     GOOD             CGS
 JV4127  HISTORY     - 1986     GOOD             NGS
 JV4127  HISTORY     - 19900725 GOOD             WSSC
 JV4127  HISTORY     - 19950919 MARK NOT FOUND   USPSQD
 JV4127  HISTORY     - 20050303 MARK NOT FOUND   USPSQD
 JV4127  HISTORY     - 20141017 GOOD             RODCON
 JV4127  HISTORY     - 20170205 GOOD             PROFLN
 JV4127
 JV4127                          STATION DESCRIPTION
 JV4127
 JV4127'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 JV4127'MAGNETIC STATION 1900 IS A STANDARD MAGNETIC STATION DISK
 JV4127'STAMPED 1900 1935, SET IN TOP OF AN 8 INCH SQUARE CONCRETE
 JV4127'MONUMENT THAT PROJECTS 1 INCH ABOVE THE SURFACE OF THE GROUND.  IT
 JV4127'IS 70 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE BRICK HOUSE
 JV4127'AND 19 FEET SOUTH OF A 6 INCH CEDAR TREE.
 JV4127
 JV4127                          STATION RECOVERY (1986)
 JV4127
 JV4127'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 JV4127'IN GAITHERSBURG.
 JV4127'IN GAITHERSBURG, ON THE GROUNDS OF THE C AND GS LATITUDE OBSERVATORY,
 JV4127'70 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE BRICK HOUSE, AND 19
 JV4127'FEET SOUTH OF A 6-INCH CEDAR TREE.
 JV4127
 JV4127                          STATION RECOVERY (1990)
 JV4127
 JV4127'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV4127'THE STATION IS LOCATED ABOUT 7.4 KM (4.6 MI) NORTHWEST OF ROCKVILLE,
 JV4127'11.4 KM (7.1 MI) WSW OF OLNEY AND 7.6 KM (4.7 MI) SOUTHEAST OF
 JV4127'GERMANTOWN IN THE CITY OF GAITHERSBURG. TO REACH THE STATION FROM THE
 JV4127'ROUTE 355 BRIDGE OVER THE CSX RAILROAD TRACKS IN GAITHERSBURG, GO
 JV4127'SOUTH ON ROUTE 355 0.5 KM (0.3 MI) TO DESELLUM AVENUE, TURN RIGHT AND
 JV4127'GO WEST 0.24 KM (0.15 MI) TO ITS APPARENT END.  CONTINUE WEST ON A
 JV4127'NARROW ROUGH SERVICE ROAD 0.16 KM (0.10 MI) TO THE OBSERVATORY GATE.
 JV4127'CONTINUE THROUGH THE GATE TO THE CIRCLE DRIVE, GO AROUND THE
 JV4127'DRIVEWAY TO THE HOUSE.  THE STATION IS IN THE REAR OF THE HOUSE.
 JV4127'OWNERSHIP--CITY OF GAITHERSBURG.  THE STATION MARK IS A STANDARD
 JV4127'USCGS MAGNETIC STATION DISK STAMPED 1900 1935 SET IN THE TOP OF A 0.2
 JV4127'M (0.7 FT) SQUARE CONCRETE MONUMENT RECESSED 0.17 M (0.56 FT) SET
 JV4127'FLUSH IN THE GRASS. IT IS 21.41 M (70.24 FT) WSW OF THE WEST CORNER
 JV4127'OF A BRICK HOUSE, 13.50 M (44.3 FT) NW OF THE FACE OF A TWIN CEDAR,
 JV4127'5.6 M (18.4 FT) SOUTH OF THE FACE OF A 0.25 M (0.82 FT) CEDAR AND
 JV4127'11.64 M (38.19 FT) WEST OF A TRAVERSE STATION DISK WITH NO STAMPING,
 JV4127'DESIGNATED GAITHERBURG OBSERVATORY SOUTH.
 JV4127
 JV4127                          STATION RECOVERY (1995)
 JV4127
 JV4127'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4127'MARK NOT FOUND.
 JV4127
 JV4127                          STATION RECOVERY (2005)
 JV4127
 JV4127'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4127'MARK NOT FOUND.
 JV4127
 JV4127                          STATION RECOVERY (2014)
 JV4127
 JV4127'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV4127'RECOVERED IN GOOD CONDITION.
 JV4127
 JV4127                          STATION RECOVERY (2017)
 JV4127
 JV4127'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 JV4127'THE MARK IS 49 FT (14.9 M) WEST OF THE WEST POST OF A SIGN ABOUT A
 JV4127'NIGHT AT THE OBSERVATORY, 46 FT (14.0 M) SOUTH OF THE SOUTH PILLAR OF
 JV4127'A SIGN ABOUT THE CHANDLER WOBBLE, 18.5 FT (5.6 M) SOUTHWEST OF A 13
 JV4127'INCH CEDAR TREE, 5.5 FT (1.7 M) NORTH OF A GRAVEL PATH AND IN THE
 JV4127'MIDDLE OF A SHRUB SEMI-CIRCLE.  EACH OF THE GEODETIC MARKS ALONG THE
 JV4127'GRAVEL PATH HAD A SHRUB SEMI-CIRCLE PLANTED AROUND IT FOR LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4125 ***********************************************************************
 JV4125  DESIGNATION -  GAITHERSBURG OBS NORTH 2
 JV4125  PID         -  JV4125
 JV4125  STATE/COUNTY-  MD/MONTGOMERY
 JV4125  COUNTRY     -  US
 JV4125  USGS QUAD   -  GAITHERSBURG (2016)
 JV4125
 JV4125                         *CURRENT SURVEY CONTROL
 JV4125  ______________________________________________________________________
 JV4125* NAD 83(1993) POSITION- 39 08 12.03552(N) 077 11 56.05733(W)   ADJUSTED
 JV4125* NAVD 88 ORTHO HEIGHT -   154.233 (meters)      506.01  (feet) ADJUSTED
 JV4125  ______________________________________________________________________
 JV4125  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 JV4125  LAPLACE CORR    -          0.94  (seconds)                    DEFLEC18
 JV4125  DYNAMIC HEIGHT  -        154.152 (meters)      505.75  (feet) COMP
 JV4125  MODELED GRAVITY -    980,097.8   (mgal)                       NAVD 88
 JV4125
 JV4125  HORZ ORDER      -  FIRST
 JV4125  VERT ORDER      -  FIRST     CLASS II
 JV4125
 JV4125.The horizontal coordinates were established by classical geodetic methods
 JV4125.and adjusted by the National Geodetic Survey in November 1994.
 JV4125
 JV4125.The orthometric height was determined by differential leveling and
 JV4125.adjusted by the NATIONAL GEODETIC SURVEY
 JV4125.in June 1991.
 JV4125
 JV4125.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4125.GEOID18 height accuracy estimate available here.
 JV4125
 JV4125.Click photographs - Photos may exist for this station.
 JV4125
 JV4125.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4125
 JV4125.The dynamic height is computed by dividing the NAVD 88
 JV4125.geopotential number by the normal gravity value computed on the
 JV4125.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV4125.degrees latitude (g = 980.6199 gals.).
 JV4125
 JV4125.The modeled gravity was interpolated from observed gravity values.
 JV4125
 JV4125. The following values were computed from the NAD 83(1993) position.
 JV4125
 JV4125;                    North         East     Units Scale Factor Converg.
 JV4125;SPC MD       -   163,197.660   382,803.488   MT  0.99996018   -0 07 29.4
 JV4125;SPC MD       -   535,424.32  1,255,914.44   sFT  0.99996018   -0 07 29.4
 JV4125;UTM  18      - 4,334,246.339   309,950.252   MT  1.00004475   -1 23 17.9
 JV4125
 JV4125!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4125!SPC MD       -   0.99998078  x   0.99996018  =   0.99994096
 JV4125!UTM  18      -   0.99998078  x   1.00004475  =   1.00002553
 JV4125
 JV4125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0995034246(NAD 83)
 JV4125
 JV4125                          SUPERSEDED SURVEY CONTROL
 JV4125
 JV4125  NAD 83(1991)-  39 08 12.03511(N)    077 11 56.05743(W) AD(       ) 1
 JV4125  NAD 83(1986)-  39 08 12.03493(N)    077 11 56.06737(W) AD(       ) 1
 JV4125  NAD 27      -  39 08 11.64802(N)    077 11 57.12867(W) AD(       ) 1
 JV4125
 JV4125.Superseded values are not recommended for survey control.
 JV4125
 JV4125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4125.See file dsdata.pdf to determine how the superseded data were derived.
 JV4125
 JV4125_MARKER: DE = TRAVERSE STATION DISK
 JV4125_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4125_MARK LOGO: CGS
 JV4125_PROJECTION: RECESSED 9 CENTIMETERS
 JV4125_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV4125_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4125+STABILITY: SURFACE MOTION
 JV4125_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4125+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4125
 JV4125  HISTORY     - Date     Condition        Report By
 JV4125  HISTORY     - 1948     MONUMENTED       CGS
 JV4125  HISTORY     - 1986     GOOD             NGS
 JV4125  HISTORY     - 19900725 GOOD             WSSC
 JV4125  HISTORY     - 19950919 GOOD             USPSQD
 JV4125  HISTORY     - 20050303 GOOD             USPSQD
 JV4125  HISTORY     - 20130911 GOOD             BASE9
 JV4125  HISTORY     - 20150205 GOOD             PROFLN
 JV4125
 JV4125                          STATION DESCRIPTION
 JV4125
 JV4125'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (MLC)
 JV4125'STATION IS LOCATED ON THE GROUNDS OF THE COAST AND GEODETIC SURVEY
 JV4125'LATITUDE OBSERVATORY, ABOUT 75 FEET S OF A 14-INCH CEDAR TREE, AND
 JV4125'ABOUT 60 FEET SW OF THE PIER IN THE OBSERVATORY.  IT IS 3.53 FEET
 JV4125'SW OF THE SW CORNER OF THE T-INTERSECTION OF SIDEWALKS FROM THE
 JV4125'OBSERVERS HOUSE TO THE GARAGE AND A PERPENDICULAR WALK TO THE
 JV4125'TOOL SHED.  THE MARK IS SET IN A ROUND CONCRETE POST FLUSH WITH
 JV4125'THE GROUND.
 JV4125
 JV4125                          STATION RECOVERY (1986)
 JV4125
 JV4125'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 JV4125'IN GAITHERSBURG.
 JV4125'IN GAITHERSBURG, ON THE GROUNDS OF THE C AND GS LATITUDE OBSERVATORY,
 JV4125'58 FEET NORTH OF THE NORTHWEST CORNER OF THE BRICK HOUSE, 50 FEET
 JV4125'SOUTHWEST OF THE SOUTHWEST CORNER OF THE OBSERVATORY BUILDING, AND 3.5
 JV4125'FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE T INTERSECTION OF A
 JV4125'SIDEWALK FROM THE BRICK HOUSE TO A PERPENDICULAR WALK TO THE WEST THAT
 JV4125'ENDS IN THE YARD.  NOTE--NO STAMPING KNOWN.
 JV4125
 JV4125                          STATION RECOVERY (1990)
 JV4125
 JV4125'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV4125'THE STATION IS LOCATED ABOUT 7.4 KM (4.6 MI) NORTHWEST OF ROCKVILLE,
 JV4125'11.4 KM (7.1 MI) WSW OF OLNEY AND 7.6 KM (4.7 MI) SOUTHEAST OF
 JV4125'GERMANTOWN IN THE CITY OF GAITHERSBURG. TO REACH THE STATION FROM THE
 JV4125'ROUTE 355 BRIDGE OVER THE B AND O RAILROAD TRACKS IN GAITHERSBURG GO
 JV4125'SOUTH ON ROUTE 355 0.5 KM (0.3 MI) TO DESELLUM AVENUE, TURN RIGHT AND
 JV4125'GO WEST 0.24 KM (0.15 MI) TO ITS APPARENT END.  CONTINUE WEST ON A
 JV4125'NARROW ROUGH SERVICE ROAD 0.16 KM (0.10 MI) TO THE OBSERVATORY GATE.
 JV4125'CONTINUE THROUGH THE GATE TO THE CIRCLE DRIVE, CONTINUE WEST AROUND
 JV4125'THE CIRCLE 47.0 M (154.2 FT) TO THE STATION ON THE RIGHT 30.0 M
 JV4125'(98.4 FT) WEST OF THE CENTERLINE OF THE CIRCLE DRIVE. OWNERSHIP--CITY
 JV4125'OF GAITHERSBURG THE STATION MARK IS A STANDARD USCGS TRAVERSE STATION
 JV4125'DISK WITH NO STAMPING SET IN THE TOP OF A ROUND CONCRETE MONUMENT
 JV4125'0.17 M (0.56 FT) IN DIAMETER RECESSED 0.1 M (0.3 FT) IN THE GRASS. IT
 JV4125'IS 1.0 M (3.3 FT) SOUTHWEST OF THE SOUTHWEST INTERSECTION OF CONCRETE
 JV4125'WALKS, 17.7 M (58.1 FT) NNE OF THE NORTH CORNER OF A BRICK HOUSE,
 JV4125'28.15 M (92.36 FT) NORTH OF THE EAST CORNER OF A BRICK HOUSE, 21.22 M
 JV4125'(69.62 FT) OF A USCGS TRIANGULATION STATION DISK STAMPED OBSERVATORY
 JV4125'1966 AND 9.5 M (31.2 FT) OF A 0.7 M (2.3 FT) CHERRY.
 JV4125
 JV4125                          STATION RECOVERY (1995)
 JV4125
 JV4125'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4125'RECOVERED IN GOOD CONDITION.
 JV4125
 JV4125                          STATION RECOVERY (2005)
 JV4125
 JV4125'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4125'RECOVERED IN GOOD CONDITION.
 JV4125
 JV4125                          STATION RECOVERY (2013)
 JV4125
 JV4125'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV4125'THE STATION IS ON THE SITE OF THE GAITHERSBURG INTERNATIONAL LATITUDE
 JV4125'OBSERVATORY PARK.
 JV4125
 JV4125                          STATION RECOVERY (2015)
 JV4125
 JV4125'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2015 (JRO)
 JV4125'THE MARK IS 52 FT (15.8 M) WEST OF THE WEST LINE EXTENDED OF THE WHITE
 JV4125'OBSERVATORY BUILDING, 30 FT (9.1 M) EAST-SOUTHEAST OF THE FACE OF A 30
 JV4125'IN CHERRY, 25 FT (7.6 M) NORTHWEST OF THE FACE OF A 22 IN OAK, 23.5 FT
 JV4125'(7.2 M) SOUTHWEST OF THE WESTERLY OF TWO LOW CONCRETE PILLARS, 5 FT
 JV4125'(1.5 M) SOUTH OF THE SOUTH LINE EXTENDED OF THE OBSERVATORY BUILDING,
 JV4125'4.5 FT (1.4 M) SOUTH OF A GRAVEL PATH AND IN THE MIDDLE OF A SHRUB
 JV4125'SEMI-CIRCLE PLANTED ON THE SOUTH SIDE OF THE PATH.  EACH OF THE
 JV4125'GEODETIC MARKS ALONG THE GRAVEL PATH HAD A SHRUB SEMI-CIRCLE PLANTED
 JV4125'AROUND IT FOR LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2610 ***********************************************************************
 JV2610  DESIGNATION -  GAITHERSBURG OBS SOUTH
 JV2610  PID         -  JV2610
 JV2610  STATE/COUNTY-  MD/MONTGOMERY
 JV2610  COUNTRY     -  US
 JV2610  USGS QUAD   -  GAITHERSBURG (2016)
 JV2610
 JV2610                         *CURRENT SURVEY CONTROL
 JV2610  ______________________________________________________________________
 JV2610* NAD 83(1993) POSITION- 39 08 10.92298(N) 077 11 56.80235(W)   ADJUSTED
 JV2610* NAVD 88 ORTHO HEIGHT -   153.494 (meters)      503.59  (feet) ADJUSTED
 JV2610  ______________________________________________________________________
 JV2610  GEOID HEIGHT    -        -31.734 (meters)                     GEOID18
 JV2610  LAPLACE CORR    -          0.95  (seconds)                    DEFLEC18
 JV2610  DYNAMIC HEIGHT  -        153.413 (meters)      503.32  (feet) COMP
 JV2610  MODELED GRAVITY -    980,097.5   (mgal)                       NAVD 88
 JV2610
 JV2610  HORZ ORDER      -  SECOND
 JV2610  VERT ORDER      -  FIRST     CLASS II
 JV2610
 JV2610.The horizontal coordinates were established by classical geodetic methods
 JV2610.and adjusted by the National Geodetic Survey in November 1994.
 JV2610
 JV2610.The orthometric height was determined by differential leveling and
 JV2610.adjusted by the NATIONAL GEODETIC SURVEY
 JV2610.in June 1991.
 JV2610
 JV2610.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2610.GEOID18 height accuracy estimate available here.
 JV2610
 JV2610.Click photographs - Photos may exist for this station.
 JV2610
 JV2610.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2610
 JV2610.The dynamic height is computed by dividing the NAVD 88
 JV2610.geopotential number by the normal gravity value computed on the
 JV2610.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2610.degrees latitude (g = 980.6199 gals.).
 JV2610
 JV2610.The modeled gravity was interpolated from observed gravity values.
 JV2610
 JV2610. The following values were computed from the NAD 83(1993) position.
 JV2610
 JV2610;                    North         East     Units Scale Factor Converg.
 JV2610;SPC MD       -   163,163.391   382,785.521   MT  0.99996016   -0 07 29.9
 JV2610;SPC MD       -   535,311.89  1,255,855.50   sFT  0.99996016   -0 07 29.9
 JV2610;UTM  18      - 4,334,212.472   309,931.532   MT  1.00004484   -1 23 18.3
 JV2610
 JV2610!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2610!SPC MD       -   0.99998090  x   0.99996016  =   0.99994106
 JV2610!UTM  18      -   0.99998090  x   1.00004484  =   1.00002574
 JV2610
 JV2610_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0993134212(NAD 83)
 JV2610
 JV2610                          SUPERSEDED SURVEY CONTROL
 JV2610
 JV2610  NAD 83(1991)-  39 08 10.92258(N)    077 11 56.80245(W) AD(       ) 2
 JV2610  NAD 83(1986)-  39 08 10.92240(N)    077 11 56.81258(W) AD(       ) 2
 JV2610  NAD 27      -  39 08 10.53531(N)    077 11 57.87390(W) AD(       ) 2
 JV2610  NGVD 29 (07/19/86)  153.7    (m)          504.     (f) VERT ANG       
 JV2610  NGVD 29 (11/26/84)  153.703  (m)          504.27   (f) ADJUSTED    1 2
 JV2610
 JV2610.Superseded values are not recommended for survey control.
 JV2610
 JV2610.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2610.See file dsdata.pdf to determine how the superseded data were derived.
 JV2610
 JV2610_MARKER: DE = TRAVERSE STATION DISK
 JV2610_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2610_MARK LOGO: CGS
 JV2610_PROJECTION: FLUSH
 JV2610_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2610+STABILITY: SURFACE MOTION
 JV2610_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2610+SATELLITE: SATELLITE OBSERVATIONS - September 11, 2013
 JV2610
 JV2610  HISTORY     - Date     Condition        Report By
 JV2610  HISTORY     - 1948     MONUMENTED       CGS
 JV2610  HISTORY     - 1946     GOOD             CGS
 JV2610  HISTORY     - 1986     GOOD             NGS
 JV2610  HISTORY     - 19900725 GOOD             WSSC
 JV2610  HISTORY     - 19950919 MARK NOT FOUND   USPSQD
 JV2610  HISTORY     - 20010401 GOOD             NGS
 JV2610  HISTORY     - 20050303 GOOD             USPSQD
 JV2610  HISTORY     - 20130911 GOOD             BASE9
 JV2610  HISTORY     - 20141017 GOOD             RODCON
 JV2610  HISTORY     - 20170205 GOOD             PROFLN
 JV2610
 JV2610                          STATION DESCRIPTION
 JV2610
 JV2610'DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (ANS)
 JV2610'LOCATED ON THE GROUNDS OF THE C. AND G.S. LATITUDE OBSERVATORY,
 JV2610'197.1 FEET N OF S PROPERTY CORNER, 184.1 FEET E OF W PROPERTY
 JV2610'CORNER, 146.5 FEET SW OF OBS. NORTH, 126.0 FEET WNW OF
 JV2610'MERIDIAN-STONE HOUSING, ABOUT 88 FEET SSW OF AN 18-INCH BOX-ELDER
 JV2610'TREE, ABOUT 86 FEET SW OF SW CORNER OF OBSERVERS RESIDENCE, IN
 JV2610'CONCRETE POST ABOUT FLUSH WITH GROUND.
 JV2610
 JV2610                          STATION RECOVERY (1946)
 JV2610
 JV2610'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1946
 JV2610'IN GAITHERSBURG.
 JV2610'ON THE GROUNDS OF THE C AND GS LATITUDE OBSERVATORY, 197.1 FEET
 JV2610'NORTH OF SOUTH PROPERTY CORNER, 184.1 FEET EAST OF WEST PROPERTY
 JV2610'CORNER, 146.5 FEET SW OF OBS. NORTH, 126.0 FEET WNW OF MERIDIAN-STONE
 JV2610'HOUSING, ABOUT 88 FEET SSW OF 18-INCH BOX ELDER TREE, ABOUT 86
 JV2610'FEET SW OF SW CORNER OF OBSERVERS RESIDENCE, IN CONCRETE POST
 JV2610'ABOUT FLUSH WITH GROUND.
 JV2610
 JV2610                          STATION RECOVERY (1986)
 JV2610
 JV2610'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 JV2610'RECOVERED IN GOOD CONDITION.
 JV2610
 JV2610                          STATION RECOVERY (1990)
 JV2610
 JV2610'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV2610'THE STATION IS LOCATED ABOUT 7.4 KM (4.6 MI) NORTHWEST OF ROCKVILLE,
 JV2610'11.4 KM (7.1 MI) WSW OF OLNEY AND 7.6 KM (4.7 MI) SOUTHEAST OF
 JV2610'GERMANTOWN IN THE CITY OF GAITHERSBURG. TO REACH THE STATION FROM THE
 JV2610'ROUTE 355 BRIDGE OVER THE CSX RAILROAD TRACKS IN GAITHERSBURG, GO
 JV2610'SOUTH ON ROUTE 355 0.5 KM (0.3 MI) TO DESELLUM AVENUE, TURN RIGHT AND
 JV2610'GO WEST 0.24 KM (0.15 MI) TO ITS APPARENT END.  CONTINUE WEST ON A
 JV2610'NARROW ROUGH SERVICE ROAD 0.16 KM (0.10 MI) TO THE OBSERVATORY GATE.
 JV2610'CONTINUE THROUGH THE GATE TO THE CIRCLE DRIVE, GO AROUND THE
 JV2610'DRIVEWAY TO THE HOUSE.  THE STATION IS IN THE REAR OF THE HOUSE.
 JV2610'OWNERSHIP--CITY OF GAITHERSBURG.  THE STATION MARK IS A STANDARD
 JV2610'USCGS TRAVERSE STATION DISK WITH NO STAMPING, SET IN THE TOP OF A
 JV2610'ROUND CONCRETE MONUMENT RECESSED 0.17 M (0.56 FT) IN THE GRASS.
 JV2610'IT IS 13.11 M (43.01 FT) WSW OF THE WEST CORNER OF A BRICK
 JV2610'HOUSE, 19.76 M (64.83 FT) WEST OF THE SOUTH CORNER OF A BRICK HOUSE,
 JV2610'7.5 M (24.6 FT) NORTH OF THE FACE OF A TWIN CEDAR, 14.0 M (45.9 FT)
 JV2610'NORTHWEST OF THE FACE OF A 0.9 M (3.0 FT) LOCUST TREE AND 11.64 M
 JV2610'(38.19 FT) NORTHEAST OF A MAGNETIC STATION DISK STAMPED 1900 1935.
 JV2610
 JV2610                          STATION RECOVERY (1995)
 JV2610
 JV2610'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV2610'MARK NOT FOUND.
 JV2610
 JV2610                          STATION RECOVERY (2001)
 JV2610
 JV2610'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (JGE)
 JV2610'RECOVERED AS DESCRIBED. MARK IS FLUSH WITH GROUND.
 JV2610
 JV2610                          STATION RECOVERY (2005)
 JV2610
 JV2610'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV2610'RECOVERED IN GOOD CONDITION.
 JV2610
 JV2610                          STATION RECOVERY (2013)
 JV2610
 JV2610'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV2610'THE STATION IS ON THE SITE OF THE GAITHERSBURG INTERNATIONAL LATITUDE
 JV2610'OBSERVATORY PARK.
 JV2610
 JV2610                          STATION RECOVERY (2014)
 JV2610
 JV2610'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV2610'RECOVERED IN GOOD CONDITION.
 JV2610
 JV2610                          STATION RECOVERY (2017)
 JV2610
 JV2610'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 JV2610'THE MARK IS 24.5 FT (7.5 M) NORTHEAST OF A 18 IN DOUBLE CEDAR, 18.5 FT
 JV2610'(5.6 M) SOUTHWEST OF A 13 IN CEDAR, 11.5 FT (3.5 M) WEST-SOUTHWEST OF
 JV2610'THE NORTHWEST SIGN POST OF A SIGN ABOUT A NIGHT AT THE OBSERVATORY,
 JV2610'INSIDE AND NE OF A SEMICIRCLE SHRUB.  THE BRICK HOUSE MENTIONED IN
 JV2610'1990 IS GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4423 ***********************************************************************
 JV4423  DESIGNATION -  GAITHERSBURG R STA WHMC S MAST
 JV4423  PID         -  JV4423
 JV4423  STATE/COUNTY-  MD/MONTGOMERY
 JV4423  COUNTRY     -  US
 JV4423  USGS QUAD   -  GAITHERSBURG (2016)
 JV4423
 JV4423                         *CURRENT SURVEY CONTROL
 JV4423  ______________________________________________________________________
 JV4423* NAD 83(1993) POSITION- 39 11 15.67439(N) 077 12 54.26676(W)   ADJUSTED
 JV4423  ______________________________________________________________________
 JV4423  GEOID HEIGHT    -        -31.786 (meters)                     GEOID18
 JV4423  LAPLACE CORR    -          1.54  (seconds)                    DEFLEC18
 JV4423  HORZ ORDER      -  THIRD
 JV4423
 JV4423.The horizontal coordinates were established by classical geodetic methods
 JV4423.and adjusted by the National Geodetic Survey in November 1994.
 JV4423
 JV4423.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4423.GEOID18 height accuracy estimate available here.
 JV4423
 JV4423.Click photographs - Photos may exist for this station.
 JV4423
 JV4423.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4423
 JV4423. The following values were computed from the NAD 83(1993) position.
 JV4423
 JV4423;                    North         East     Units Scale Factor Converg.
 JV4423;SPC MD       -   168,863.747   381,418.901   MT  0.99996463   -0 08 06.0
 JV4423;SPC MD       -   554,013.81  1,251,371.84   sFT  0.99996463   -0 08 06.0
 JV4423;UTM  18      - 4,339,942.082   308,690.909   MT  1.00005066   -1 24 00.2
 JV4423
 JV4423_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0869039942(NAD 83)
 JV4423
 JV4423                          SUPERSEDED SURVEY CONTROL
 JV4423
 JV4423  NAD 83(1991)-  39 11 15.67412(N)    077 12 54.26684(W) AD(       ) 3
 JV4423  NAD 83(1986)-  39 11 15.67395(N)    077 12 54.27708(W) AD(       ) 3
 JV4423  NAD 27      -  39 11 15.28901(N)    077 12 55.33525(W) AD(       ) 3
 JV4423
 JV4423.Superseded values are not recommended for survey control.
 JV4423
 JV4423.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4423.See file dsdata.pdf to determine how the superseded data were derived.
 JV4423
 JV4423_MARKER: 42 = RADIO/TV MAST
 JV4423_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4423+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4423
 JV4423  HISTORY     - Date     Condition        Report By
 JV4423  HISTORY     - 1969     FIRST OBSERVED   CGS
 JV4423  HISTORY     - 19950905 GOOD             USPSQD
 JV4423  HISTORY     - 20031102 GOOD             USPSQD
 JV4423  HISTORY     - 20050303 GOOD             USPSQD
 JV4423
 JV4423                          STATION DESCRIPTION
 JV4423
 JV4423'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4423'THE STATION IS THE RED LIGHT MOUNTED ON TOP OF THE GAITHERSBURG
 JV4423'RADIO STATION WHMC SOUTH MAST.  IT IS THE SOUTH MAST OF FOUR IN
 JV4423'LINE OF AN ARRAY OF FIVE MASTS.  IT IS 213.5 FEET ABOVE THE
 JV4423'GROUND.
 JV4423'
 JV4423'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 355
 JV4423'AND WATKINS MILL ROAD, GO NORTHEASTERLY ON WATKINS MILL ROAD
 JV4423'FOR 3.5 MILES TO THE STATION ON THE RIGHT.
 JV4423
 JV4423                          STATION RECOVERY (1995)
 JV4423
 JV4423'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4423'RECOVERED IN GOOD CONDITION.
 JV4423
 JV4423                          STATION RECOVERY (2003)
 JV4423
 JV4423'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4423'RECOVERED IN GOOD CONDITION.
 JV4423
 JV4423                          STATION RECOVERY (2005)
 JV4423
 JV4423'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4423'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4375 ***********************************************************************
 JV4375  DESIGNATION -  GAITHERSBURG WASHINGTONIAN TWR
 JV4375  PID         -  JV4375
 JV4375  STATE/COUNTY-  MD/MONTGOMERY
 JV4375  COUNTRY     -  US
 JV4375  USGS QUAD   -  ROCKVILLE (2016)
 JV4375
 JV4375                         *CURRENT SURVEY CONTROL
 JV4375  ______________________________________________________________________
 JV4375* NAD 83(1993) POSITION- 39 06 53.63214(N) 077 11 57.82133(W)   ADJUSTED
 JV4375  ______________________________________________________________________
 JV4375  GEOID HEIGHT    -        -31.718 (meters)                     GEOID18
 JV4375  LAPLACE CORR    -          0.95  (seconds)                    DEFLEC18
 JV4375  HORZ ORDER      -  THIRD
 JV4375
 JV4375.The horizontal coordinates were established by classical geodetic methods
 JV4375.and adjusted by the National Geodetic Survey in November 1994.
 JV4375
 JV4375.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4375.GEOID18 height accuracy estimate available here.
 JV4375
 JV4375.Click photographs - Photos may exist for this station.
 JV4375
 JV4375.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4375
 JV4375. The following values were computed from the NAD 83(1993) position.
 JV4375
 JV4375;                    North         East     Units Scale Factor Converg.
 JV4375;SPC MD       -   160,780.029   382,755.844   MT  0.99995853   -0 07 30.5
 JV4375;SPC MD       -   527,492.48  1,255,758.13   sFT  0.99995853   -0 07 30.5
 JV4375;UTM  18      - 4,331,830.139   309,849.316   MT  1.00004523   -1 23 16.7
 JV4375
 JV4375_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0984931830(NAD 83)
 JV4375
 JV4375                          SUPERSEDED SURVEY CONTROL
 JV4375
 JV4375  NAD 83(1991)-  39 06 53.63166(N)    077 11 57.82171(W) AD(       ) 3
 JV4375  NAD 83(1986)-  39 06 53.63182(N)    077 11 57.83177(W) AD(       ) 3
 JV4375  NAD 27      -  39 06 53.24338(N)    077 11 58.89171(W) AD(       ) 3
 JV4375
 JV4375.Superseded values are not recommended for survey control.
 JV4375
 JV4375.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4375.See file dsdata.pdf to determine how the superseded data were derived.
 JV4375
 JV4375_MARKER: 55 = TOWER
 JV4375_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4375+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4375
 JV4375  HISTORY     - Date     Condition        Report By
 JV4375  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV4375  HISTORY     - 19950903 GOOD             USPSQD
 JV4375  HISTORY     - 20031201 GOOD             USPSQD
 JV4375  HISTORY     - 20050303 GOOD             USPSQD
 JV4375
 JV4375                          STATION DESCRIPTION
 JV4375
 JV4375'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV4375'THE STATION IS THE CENTER OF THE TOP OF THE VENTILATOR ON TOP OF
 JV4375'THE GAITHERSBURG WASHINGTONIAN TOWERS, LOCATED AT 9701 FIELDS ROAD.
 JV4375
 JV4375                          STATION RECOVERY (1995)
 JV4375
 JV4375'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4375'RECOVERED IN GOOD CONDITION.
 JV4375
 JV4375                          STATION RECOVERY (2003)
 JV4375
 JV4375'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV4375'RECOVERED IN GOOD CONDITION.
 JV4375
 JV4375                          STATION RECOVERY (2005)
 JV4375
 JV4375'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4375'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7191 ***********************************************************************
 HV7191  DESIGNATION -  GALE
 HV7191  PID         -  HV7191
 HV7191  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7191  COUNTRY     -  US
 HV7191  USGS QUAD   -  DEALE (2016)
 HV7191
 HV7191                         *CURRENT SURVEY CONTROL
 HV7191  ______________________________________________________________________
 HV7191* NAD 83(1993) POSITION- 38 50 38.42078(N) 076 32 16.30286(W)   ADJUSTED
 HV7191* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7191  ______________________________________________________________________
 HV7191  GEOID HEIGHT    -        -33.459 (meters)                     GEOID18
 HV7191  LAPLACE CORR    -         -3.73  (seconds)                    DEFLEC18
 HV7191  HORZ ORDER      -  THIRD
 HV7191
 HV7191.The horizontal coordinates were established by classical geodetic methods
 HV7191.and adjusted by the National Geodetic Survey in November 1994.
 HV7191
 HV7191.The orthometric height was scaled from a topographic map.
 HV7191
 HV7191.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7191.GEOID18 height accuracy estimate available here.
 HV7191
 HV7191.Click photographs - Photos may exist for this station.
 HV7191
 HV7191.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7191
 HV7191. The following values were computed from the NAD 83(1993) position.
 HV7191
 HV7191;                    North         East     Units Scale Factor Converg.
 HV7191;SPC MD       -   130,791.073   440,118.940   MT  0.99995000   +0 17 24.2
 HV7191;SPC MD       -   429,103.71  1,443,956.89   sFT  0.99995000   +0 17 24.2
 HV7191;UTM  18      - 4,300,589.503   366,538.477   MT  0.99981934   -0 57 52.9
 HV7191
 HV7191!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7191!SPC MD       -   1.00000529  x   0.99995000  =   0.99995529
 HV7191!UTM  18      -   1.00000529  x   0.99981934  =   0.99982463
 HV7191
 HV7191:                Primary Azimuth Mark                     Grid Az
 HV7191:SPC MD       -  CEDAR                                    048 34 49.3
 HV7191:UTM  18      -  CEDAR                                    049 50 06.4
 HV7191
 HV7191_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6653800589(NAD 83)
 HV7191
 HV7191|---------------------------------------------------------------------|
 HV7191| PID    Reference Object                     Distance      Geod. Az  |
 HV7191|                                                           dddmmss.s |
 HV7191| HV7183 CEDAR                               APPROX. 1.1 KM 0485213.5 |
 HV7191| CX2789 GALE RM                               7.642 METERS 29223     |
 HV7191|---------------------------------------------------------------------|
 HV7191
 HV7191                          SUPERSEDED SURVEY CONTROL
 HV7191
 HV7191  NAD 83(1986)-  38 50 38.41721(N)    076 32 16.31446(W) AD(       ) 3
 HV7191  NAD 27      -  38 50 38.01000(N)    076 32 17.46100(W) AD(       ) 3
 HV7191
 HV7191.Superseded values are not recommended for survey control.
 HV7191
 HV7191.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7191.See file dsdata.pdf to determine how the superseded data were derived.
 HV7191
 HV7191_MARKER: DS = TRIANGULATION STATION DISK
 HV7191_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7191_STAMPING: GALE 1933
 HV7191_MARK LOGO: CGS
 HV7191_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7191+STABILITY: SURFACE MOTION
 HV7191
 HV7191  HISTORY     - Date     Condition        Report By
 HV7191  HISTORY     - 1933     MONUMENTED       CGS
 HV7191  HISTORY     - 1957     SEE DESCRIPTION  USGS
 HV7191
 HV7191                          STATION DESCRIPTION
 HV7191
 HV7191'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7191'STATION IS ON THE W SHORE OF WEST RIVER, 1/8 MILE N OF
 HV7191'GALESVILLE, ON THE SOUTHERN POINT AT THE ENTRANCE TO TENTHOUSE
 HV7191'CREEK.  THE STATION IS 5 YARDS W OF A 15-FOOT BLUFF FACING WEST
 HV7191'RIVER AND 10 YARDS FROM BLUFF FACING TENTHOUSE CREEK.
 HV7191'
 HV7191'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7191'CONCRETE AS DESCRIBED.
 HV7191
 HV7191                          STATION RECOVERY (1957)
 HV7191
 HV7191'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV7191'STATION FOUND DESTROYED.  OWNER OF LAND REPORTS THAT HURRICANE
 HV7191'HAZEL WASHED AWAY THE BANK AND THAT THE POST IS STILL IN THE
 HV7191'WATER AT THE BASE OF THE BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3177 ***********************************************************************
 DI3177  DESIGNATION -  GALESTOWN 1
 DI3177  PID         -  DI3177
 DI3177  STATE/COUNTY-  MD/DORCHESTER
 DI3177  COUNTRY     -  US
 DI3177  USGS QUAD   -  SHARPTOWN (2016)
 DI3177
 DI3177                         *CURRENT SURVEY CONTROL
 DI3177  ______________________________________________________________________
 DI3177* NAD 83(2011) POSITION- 38 33 14.22858(N) 075 43 41.67878(W)   ADJUSTED
 DI3177* NAD 83(2011) ELLIP HT-   -31.633 (meters)        (06/27/12)   ADJUSTED
 DI3177* NAD 83(2011) EPOCH   -  2010.00
 DI3177* NAVD 88 ORTHO HEIGHT -     3.9   (meters)       13.    (feet) GPS OBS
 DI3177  ______________________________________________________________________
 DI3177  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3177  GEOID HEIGHT    -        -35.514 (meters)                     GEOID03
 DI3177  GEOID HEIGHT    -        -35.544 (meters)                     GEOID18
 DI3177  NAD 83(2011) X  -  1,231,204.827 (meters)                     COMP
 DI3177  NAD 83(2011) Y  - -4,840,176.458 (meters)                     COMP
 DI3177  NAD 83(2011) Z  -  3,953,695.013 (meters)                     COMP
 DI3177  LAPLACE CORR    -         -2.25  (seconds)                    DEFLEC18
 DI3177
 DI3177  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3177  Standards:
 DI3177         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3177            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3177  -------------------------------------------------------------------
 DI3177  NETWORK    0.81   1.08           0.37   0.28   0.55      0.13003023
 DI3177  -------------------------------------------------------------------
 DI3177  Click here for local accuracies and other accuracy information.
 DI3177
 DI3177.The horizontal coordinates were established by GPS observations
 DI3177.and adjusted by the National Geodetic Survey in June 2012.
 DI3177
 DI3177.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3177.been affixed to the stable North American tectonic plate. See 
 DI3177.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3177
 DI3177.The horizontal coordinates are valid at the epoch date displayed above
 DI3177.which is a decimal equivalence of Year/Month/Day.
 DI3177
 DI3177.The orthometric height was determined by GPS observations and a
 DI3177.high-resolution geoid model.
 DI3177
 DI3177.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3177.GEOID18 height accuracy estimate available here.
 DI3177
 DI3177.Click photographs - Photos may exist for this station.
 DI3177
 DI3177.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3177
 DI3177.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3177
 DI3177.The ellipsoidal height was determined by GPS observations
 DI3177.and is referenced to NAD 83.
 DI3177
 DI3177. The following values were computed from the NAD 83(2011) position.
 DI3177
 DI3177;                    North         East     Units Scale Factor Converg.
 DI3177;SPC MD       -    99,264.337   510,848.575   MT  0.99996553   +0 47 53.5
 DI3177;SPC MD       -   325,669.75  1,676,009.03   sFT  0.99996553   +0 47 53.5
 DI3177;UTM  18      - 4,267,531.435   436,545.674   MT  0.99964958   -0 27 14.0
 DI3177
 DI3177!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3177!SPC MD       -   1.00000496  x   0.99996553  =   0.99997049
 DI3177!UTM  18      -   1.00000496  x   0.99964958  =   0.99965454
 DI3177
 DI3177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3654567531(NAD 83)
 DI3177
 DI3177|---------------------------------------------------------------------|
 DI3177| PID    Reference Object                     Distance      Geod. Az  |
 DI3177|                                                           dddmmss.s |
 DI3177| DI3178 GALESTOWN 2                         376.371 METERS 24353     |
 DI3177|---------------------------------------------------------------------|
 DI3177
 DI3177                          SUPERSEDED SURVEY CONTROL
 DI3177
 DI3177  NAD 83(1991)-  38 33 14.22874(N)    075 43 41.67935(W) AD(       ) 1
 DI3177  ELLIP H (01/05/07)  -31.591  (m)                       GP(       ) 4 2
 DI3177
 DI3177.Superseded values are not recommended for survey control.
 DI3177
 DI3177.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3177.See file dsdata.pdf to determine how the superseded data were derived.
 DI3177
 DI3177_MARKER: DD = SURVEY DISK
 DI3177_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3177_STAMPING: GALESTOWN 1
 DI3177_MARK LOGO: MD-019
 DI3177_PROJECTION: RECESSED 9 CENTIMETERS
 DI3177_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3177_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3177+STABILITY: SURFACE MOTION
 DI3177_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3177+SATELLITE: SATELLITE OBSERVATIONS - November 04, 2022
 DI3177
 DI3177  HISTORY     - Date     Condition        Report By
 DI3177  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3177  HISTORY     - 20130614 GOOD             DELCOS
 DI3177  HISTORY     - 20221104 GOOD             USPSQD
 DI3177
 DI3177                          STATION DESCRIPTION
 DI3177
 DI3177'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3177'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR SHARPTOWN,
 DI3177'MARYLAND.  IT IS ABOUT 18.8 MI (30.2 KM) EAST OF CAMBRIDGE, MARYLAND,
 DI3177'ABOUT 23.7 MI (38.1 KM) SOUTHEAST OF EASTON, MARYLAND AND ABOUT 14.8
 DI3177'MI (23.8 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3177'
 DI3177'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3177'HOLLY-EAST NEW MARKET ROAD), PROCEED NORTHEAST ON SR 16 FOR 5.1 MI
 DI3177'(8.2 KM) TO INTERSECTION WITH SR 392 (EAST NEW MARKET HULOCK ROAD).
 DI3177'CONTINUE STRAIGHT TO GET ON SR 392 AND PROCEED 0.8 MI (1.3 KM)
 DI3177'NORTHEAST TO INTERSECTION WITH SR 14 (EAST NEW MARKET RHODESDALE
 DI3177'ROAD).  TURN RIGHT AND PROCEED 7.7 MI (12.4 KM) EAST TO INTERSECTION
 DI3177'WITH SR 313 (ELDORADO SHARPTOWN  ROAD).  TURN RIGHT AND PROCEED 4.2 MI
 DI3177'(6.8 KM) SOUTHEAST TO INTERSECTION WITH NANTICOKE  ROAD.  STATION
 DI3177'IS EAST OF THE INTERSECTION.
 DI3177'
 DI3177'IT IS 2.6 FT (0.8M) EAST OF THE EAST EDGE OF SR 313, 17.0 FT (5.2 M)
 DI3177'WEST OF ELECTRIC POLE DPL 43215-00039 AND 65.00 FT (19.8 M) EAST OF
 DI3177'HENSON SCOUT RESERVATION BRICK SIGN.  IT IS A 3 IN BRASS DISK STAMPED
 DI3177'GALESTOWN 1 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT FLUSH
 DI3177'WITH THE GROUND.
 DI3177
 DI3177                          STATION RECOVERY (2013)
 DI3177
 DI3177'RECOVERY NOTE BY DELAWARE COASTAL PROGRAM 2013
 DI3177'MONUMENT IS 2 INCHES BELOW THE GROUND.
 DI3177
 DI3177                          STATION RECOVERY (2022)
 DI3177
 DI3177'RECOVERY NOTE BY US POWER SQUADRON 2022 (DLT)
 DI3177'THE MARK IS 13.3 FT (4.1 M) NORTHWEST OF THE CENTERLINE OF EXTENDED
 DI3177'NANTICOKE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3178 ***********************************************************************
 DI3178  HT_MOD      -  This is a Height Modernization Survey Station.
 DI3178  DESIGNATION -  GALESTOWN 2
 DI3178  PID         -  DI3178
 DI3178  STATE/COUNTY-  MD/DORCHESTER
 DI3178  COUNTRY     -  US
 DI3178  USGS QUAD   -  SHARPTOWN (2016)
 DI3178
 DI3178                         *CURRENT SURVEY CONTROL
 DI3178  ______________________________________________________________________
 DI3178* NAD 83(2011) POSITION- 38 33 08.85466(N) 075 43 55.63505(W)   ADJUSTED
 DI3178* NAD 83(2011) ELLIP HT-   -31.712 (meters)        (06/27/12)   ADJUSTED
 DI3178* NAD 83(2011) EPOCH   -  2010.00
 DI3178* NAVD 88 ORTHO HEIGHT -     3.84  (meters)       12.6   (feet) GPS OBS
 DI3178  ______________________________________________________________________
 DI3178  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DI3178  GEOID HEIGHT    -        -35.535 (meters)                     GEOID12B
 DI3178  GEOID HEIGHT    -        -35.540 (meters)                     GEOID18
 DI3178  NAD 83(2011) X  -  1,230,902.766 (meters)                     COMP
 DI3178  NAD 83(2011) Y  - -4,840,359.781 (meters)                     COMP
 DI3178  NAD 83(2011) Z  -  3,953,565.377 (meters)                     COMP
 DI3178  LAPLACE CORR    -         -2.29  (seconds)                    DEFLEC18
 DI3178
 DI3178  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3178  Standards:
 DI3178         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3178            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3178  -------------------------------------------------------------------
 DI3178  NETWORK    0.48   0.69           0.20   0.19   0.35      0.02129660
 DI3178  -------------------------------------------------------------------
 DI3178  Click here for local accuracies and other accuracy information.
 DI3178
 DI3178.The horizontal coordinates were established by GPS observations
 DI3178.and adjusted by the National Geodetic Survey in June 2012.
 DI3178
 DI3178.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3178.been affixed to the stable North American tectonic plate. See 
 DI3178.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3178
 DI3178.The horizontal coordinates are valid at the epoch date displayed above
 DI3178.which is a decimal equivalence of Year/Month/Day.
 DI3178
 DI3178.The orthometric height was determined by GPS observations and a
 DI3178.high-resolution geoid model using precise GPS observation and
 DI3178.processing techniques.
 DI3178
 DI3178.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3178.GEOID18 height accuracy estimate available here.
 DI3178
 DI3178.Click photographs - Photos may exist for this station.
 DI3178
 DI3178.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3178
 DI3178.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3178
 DI3178.The ellipsoidal height was determined by GPS observations
 DI3178.and is referenced to NAD 83.
 DI3178
 DI3178. The following values were computed from the NAD 83(2011) position.
 DI3178
 DI3178;                    North         East     Units Scale Factor Converg.
 DI3178;SPC MD       -    99,093.952   510,512.994   MT  0.99996568   +0 47 44.8
 DI3178;SPC MD       -   325,110.74  1,674,908.05   sFT  0.99996568   +0 47 44.8
 DI3178;UTM  18      - 4,267,368.475   436,206.557   MT  0.99965011   -0 27 22.7
 DI3178
 DI3178!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3178!SPC MD       -   1.00000498  x   0.99996568  =   0.99997066
 DI3178!UTM  18      -   1.00000498  x   0.99965011  =   0.99965508
 DI3178
 DI3178_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3620667368(NAD 83)
 DI3178
 DI3178|---------------------------------------------------------------------|
 DI3178| PID    Reference Object                     Distance      Geod. Az  |
 DI3178|                                                           dddmmss.s |
 DI3178| DI3177 GALESTOWN 1                         376.371 METERS 06353     |
 DI3178|---------------------------------------------------------------------|
 DI3178
 DI3178                          SUPERSEDED SURVEY CONTROL
 DI3178
 DI3178  NAD 83(1991)-  38 33 08.85480(N)    075 43 55.63562(W) AD(       ) 1
 DI3178  ELLIP H (01/05/07)  -31.670  (m)                       GP(       ) 4 2
 DI3178  NAVD 88 (01/05/07)    3.8    (m)  GEOID03  model used  GPS OBS        
 DI3178
 DI3178.Superseded values are not recommended for survey control.
 DI3178
 DI3178.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3178.See file dsdata.pdf to determine how the superseded data were derived.
 DI3178
 DI3178_MARKER: DD = SURVEY DISK
 DI3178_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3178_STAMPING: GALESTOWN 2
 DI3178_MARK LOGO: MD-019
 DI3178_PROJECTION: RECESSED 5 CENTIMETERS
 DI3178_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3178_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3178+STABILITY: SURFACE MOTION
 DI3178_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3178+SATELLITE: SATELLITE OBSERVATIONS - November 04, 2022
 DI3178
 DI3178  HISTORY     - Date     Condition        Report By
 DI3178  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3178  HISTORY     - 20130614 GOOD             DELCOS
 DI3178  HISTORY     - 20221104 GOOD             USPSQD
 DI3178
 DI3178                          STATION DESCRIPTION
 DI3178
 DI3178'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3178'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR SHARPTOWN,
 DI3178'MARYLAND.  IT IS ABOUT 18.7 MI (30.1 KM) EAST OF CAMBRIDGE, MARYLAND,
 DI3178'ABOUT 23.7 MI (38.1 KM) SOUTHEAST OF EASTON, MARYLAND AND ABOUT 14.8
 DI3178'MI (23.8 KM) NORTHWEST OF SALISBURY, MARYLAND.
 DI3178'
 DI3178'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3178'HOLLY-EAST NEW MARKET ROAD), PROCEED NORTHEAST ON SR 16 FOR 5.1 MI
 DI3178'(8.2 KM) TO INTERSECTION WITH SR 392 (EAST NEW MARKET HULOCK ROAD).
 DI3178'CONTINUE STRAIGHT TO GET ON SR 392 AND PROCEED 0.8 MI (1.3 KM)
 DI3178'NORTHEAST TO INTERSECTION WITH SR 14 (EAST NEW MARKET RHODESDALE
 DI3178'ROAD).  TURN RIGHT AND PROCEED 7.7 MI (12.4 KM) EAST TO INTERSECTION
 DI3178'WITH SR 313 (ELDORADO SHARPTOWN ROAD).  TURN RIGHT AND PROCEED 4.2 MI
 DI3178'(6.8 KM) SOUTHEAST TO INTERSECTION WITH NANTICOKE ROAD.  TURN RIGHT
 DI3178'AND PROCEED 0.2 MI (0.3 KM) SOUTHWEST TO THE STATION ON THE LEFT.
 DI3178'
 DI3178'IT IS 12.0 FT (3.7 M) SOUTH OF THE CENTER LINE OF NANTICOKE ROAD,
 DI3178'83.0 FT (25.3 M) WEST OF ELECTRIC POLE DPL 43111-99983 AND 183.0 FT
 DI3178'(55.8 M) EAST OF ELECTRIC POLE DPL 43086-99974.  IT IS A 3 IN BRASS
 DI3178'DISK STAMPED GALESTOWN 2 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE
 DI3178'MONUMENT FLUSH WITH THE GROUND.
 DI3178
 DI3178                          STATION RECOVERY (2013)
 DI3178
 DI3178'RECOVERY NOTE BY DELAWARE COASTAL PROGRAM 2013
 DI3178'RECOVERED IN GOOD CONDITION.
 DI3178
 DI3178                          STATION RECOVERY (2022)
 DI3178
 DI3178'RECOVERY NOTE BY US POWER SQUADRON 2022 (DLT)
 DI3178'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4606 ***********************************************************************
 JV4606  DESIGNATION -  GAMBRILL
 JV4606  PID         -  JV4606
 JV4606  STATE/COUNTY-  MD/FREDERICK
 JV4606  COUNTRY     -  US
 JV4606  USGS QUAD   -  FREDERICK (2016)
 JV4606
 JV4606                         *CURRENT SURVEY CONTROL
 JV4606  ______________________________________________________________________
 JV4606* NAD 83(1991) POSITION- 39 27 14.43383(N) 077 29 41.96270(W)   ADJUSTED
 JV4606* NAVD 88 ORTHO HEIGHT -   311.    (meters)     1020.    (feet) SCALED
 JV4606  ______________________________________________________________________
 JV4606  GEOID HEIGHT    -        -32.899 (meters)                     GEOID18
 JV4606  LAPLACE CORR    -          5.20  (seconds)                    DEFLEC18
 JV4606  HORZ ORDER      -  THIRD
 JV4606
 JV4606.The horizontal coordinates were established by classical geodetic methods
 JV4606.and adjusted by the National Geodetic Survey in January 1992.
 JV4606
 JV4606.The orthometric height was scaled from a topographic map.
 JV4606
 JV4606.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4606.GEOID18 height accuracy estimate available here.
 JV4606
 JV4606.Click photographs - Photos may exist for this station.
 JV4606
 JV4606.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4606
 JV4606. The following values were computed from the NAD 83(1991) position.
 JV4606
 JV4606;                    North         East     Units Scale Factor Converg.
 JV4606;SPC MD       -   198,524.302   357,396.382   MT  1.00000070   -0 18 38.4
 JV4606;SPC MD       -   651,325.15  1,172,557.96   sFT  1.00000070   -0 18 38.4
 JV4606;UTM  18      - 4,370,131.642   285,328.748   MT  1.00016743   -1 35 09.8
 JV4606
 JV4606!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4606!SPC MD       -   0.99995640  x   1.00000070  =   0.99995710
 JV4606!UTM  18      -   0.99995640  x   1.00016743  =   1.00012383
 JV4606
 JV4606:                Primary Azimuth Mark                     Grid Az
 JV4606:SPC MD       -  KLIPP                                    251 11 10.6
 JV4606:UTM  18      -  KLIPP                                    252 27 42.0
 JV4606
 JV4606_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8532870131(NAD 83)
 JV4606
 JV4606|---------------------------------------------------------------------|
 JV4606| PID    Reference Object                     Distance      Geod. Az  |
 JV4606|                                                           dddmmss.s |
 JV4606| CJ9842 GAMBRILL RM 2                        22.698 METERS 00010     |
 JV4606| CJ9841 GAMBRILL RM 1                        12.961 METERS 09407     |
 JV4606| JV2986 GAMBRILL AZ MK                                     2400512.5 |
 JV4606| JV4617 KLIPP                               464.473 METERS 2505232.2 |
 JV4606|---------------------------------------------------------------------|
 JV4606
 JV4606                          SUPERSEDED SURVEY CONTROL
 JV4606
 JV4606  NAD 83(1986)-  39 27 14.43351(N)    077 29 41.97225(W) AD(       ) 3
 JV4606  NAD 27      -  39 27 14.05990(N)    077 29 43.01910(W) AD(       ) 3
 JV4606
 JV4606.Superseded values are not recommended for survey control.
 JV4606
 JV4606.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4606.See file dsdata.pdf to determine how the superseded data were derived.
 JV4606
 JV4606_MARKER: DS = TRIANGULATION STATION DISK
 JV4606_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4606_STAMPING: GAMBRILL 1958
 JV4606_MARK LOGO: CGS
 JV4606_PROJECTION: FLUSH
 JV4606_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4606+STABILITY: SURFACE MOTION
 JV4606_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4606+SATELLITE: SATELLITE OBSERVATIONS - January 26, 2024
 JV4606
 JV4606  HISTORY     - Date     Condition        Report By
 JV4606  HISTORY     - 1958     MONUMENTED       CGS
 JV4606  HISTORY     - 20240126 GOOD             MD0580
 JV4606
 JV4606                          STATION DESCRIPTION
 JV4606
 JV4606'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4606'STATION IS LOCATED AT THE ENTRANCE TO GAMBRILL STATE PARK ON THE
 JV4606'EAST SLOPE OF CATOCTIAN MOUNTAIN, ABOUT 5.0 MILES NORTHWEST OF
 JV4606'FREDERICK AND ABOUT 0.3 MILE NORTHEAST OF U.S. HIGHWAY
 JV4606'NO. 40.  STATION IS 20-1/2 FEET SOUTH-SOUTHWEST OF NORTH END OF
 JV4606'STATE PARK SIGN AND 19-1/2 FEET WEST-SOUTHWEST OF THE SOUTH END
 JV4606'OF STATE PARK SIGN.  THE MARK IS SET FLUSH AND THE DISK IS
 JV4606'STAMPED GAMBRILL 1958.
 JV4606'
 JV4606'REFERENCE MARK NO. 1 IS 16 FEET NORTH-NORTHWEST OF APPROXIMATE
 JV4606'CENTERLINE OF PAVED ROAD AND 9-1/2 FEET WEST OF UTILITY POLE.  THE
 JV4606'MARK IS SET FLUSH AND THE DISK IS STAMPED GAMBRILL NO 1 1958.
 JV4606'
 JV4606'REFERENCE MARK NO. 2 IS 27 FEET EAST OF APPROXIMATE CENTERLINE OF
 JV4606'PAVED ROAD AND 54 FEET NORTH-NORTHWEST OF NORTH END OF STATE PARK
 JV4606'SIGN.  THE MARK IS SET IN CONCRETE IN A DRILL HOLE IN OUTCROPPING
 JV4606'ROCK WHICH IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED
 JV4606'GAMBRILL NO 2 1958.
 JV4606'
 JV4606'AZIMUTH MARK IS 66-1/2 FEET NORTHEAST OF THE APPROXIMATE
 JV4606'CENTERLINE OF U.S. HIGHWAY NO. 40, 64 FEET NORTHWEST OF FENCE
 JV4606'CORNER, 6 FEET WEST-NORTHWEST OF A CONCRETE HIGHWAY RIGHT OF WAY
 JV4606'MARKER AND 1 FOOT SOUTHWEST OF FENCELINE.  THE MARK PROJECTS 2
 JV4606'INCHES AND THE DISK IS STAMPED GAMBRILL 1958.
 JV4606'
 JV4606'TO REACH FROM POST OFFICE IN FREDERICK GO WESTERLY ON U.S. HIGHWAY
 JV4606'NO. 40 FOR 2.9 MILES TO JUNCTION OF ALT. U.S. HIGHWAY
 JV4606'NO. 40.  CONTINUE NORTHWESTERLY ON U.S. HIGHWAY NO. 40 FOR 2.75
 JV4606'MILES TO SURFACED ROAD RIGHT JUST AFTER PASSING SIGN GAMBRILL
 JV4606'STATE PARK.  TURN RIGHT AND GO NORTHERLY ON SURFACED ROAD FOR
 JV4606'0.55 MILE TO 5 POINT INTERSECTION AT ENTRANCE TO GAMBRILL STATE
 JV4606'PARK AND STATION AS DESCRIBED.  TO REACH AZIMUTH MARK FROM
 JV4606'STATION GAMBRILL GO SOUTHERLY ON SURFACED ROAD FOR 0.55 MILE
 JV4606'TO JUNCTION OF U.S. HIGHWAY NO. 40.  TURN RIGHT AND GO
 JV4606'NORTHWESTERLY ON U.S. HIGHWAY NO. 40 FOR 0.55 MILE TO AZIMUTH
 JV4606'MARK NEAR FENCELINE ON RIGHT (NORTHEAST) SIDE OF HIGHWAY AS
 JV4606'DESCRIBED.
 JV4606'
 JV4606'NOTE--CLEARING NECESSARY AT STATION HIGH KNOB 2 1939 TO MAKE
 JV4606'HIGH KNOB 2 1939 VISIBLE FROM GROUND.
 JV4606'
 JV4606'A 15 FOOT SIGNAL NCESSARY AT STATION KLIPP TO MAKE STATION
 JV4606'KLIPP VISIBLE.
 JV4606'
 JV4606'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV4606
 JV4606                          STATION RECOVERY (2024)
 JV4606
 JV4606'RECOVERY NOTE BY CITY OF FREDERICK MARYLAND 2024 (CK)
 JV4606'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2986 ***********************************************************************
 JV2986  DESIGNATION -  GAMBRILL AZ MK
 JV2986  PID         -  JV2986
 JV2986  STATE/COUNTY-  MD/FREDERICK
 JV2986  COUNTRY     -  US
 JV2986  USGS QUAD   -  FREDERICK (2016)
 JV2986
 JV2986                         *CURRENT SURVEY CONTROL
 JV2986  ______________________________________________________________________
 JV2986* NAD 83(1986) POSITION- 39 27 11.     (N) 077 29 55.     (W)   SCALED
 JV2986* NAVD 88 ORTHO HEIGHT -   317.809 (meters)     1042.68  (feet) ADJUSTED
 JV2986  ______________________________________________________________________
 JV2986  GEOID HEIGHT    -        -32.908 (meters)                     GEOID18
 JV2986  DYNAMIC HEIGHT  -        317.634 (meters)     1042.10  (feet) COMP
 JV2986  MODELED GRAVITY -    980,065.2   (mgal)                       NAVD 88
 JV2986
 JV2986  VERT ORDER      -  SECOND    CLASS 0
 JV2986
 JV2986.The horizontal coordinates were scaled from a map and have
 JV2986.an estimated accuracy of +/- 6 seconds.
 JV2986
 JV2986.The orthometric height was determined by differential leveling and
 JV2986.adjusted by the NATIONAL GEODETIC SURVEY
 JV2986.in June 1991.
 JV2986
 JV2986.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2986.GEOID18 height accuracy estimate available here.
 JV2986
 JV2986.Click photographs - Photos may exist for this station.
 JV2986
 JV2986.The dynamic height is computed by dividing the NAVD 88
 JV2986.geopotential number by the normal gravity value computed on the
 JV2986.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2986.degrees latitude (g = 980.6199 gals.).
 JV2986
 JV2986.The modeled gravity was interpolated from observed gravity values.
 JV2986
 JV2986;                    North         East    Units  Estimated Accuracy
 JV2986;SPC MD       -   198,420.      357,080.      MT  (+/- 180 meters Scaled)
 JV2986
 JV2986_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ850700(NAD 83)
 JV2986
 JV2986                          SUPERSEDED SURVEY CONTROL
 JV2986
 JV2986  NGVD 29 (11/26/84)  318.025  (m)         1043.39   (f) ADJUSTED    2 0
 JV2986
 JV2986.Superseded values are not recommended for survey control.
 JV2986
 JV2986.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2986.See file dsdata.pdf to determine how the superseded data were derived.
 JV2986
 JV2986_MARKER: DZ = AZIMUTH MARK DISK
 JV2986_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2986_STAMPING: GRAMBRILL 1958
 JV2986_MARK LOGO: CGS
 JV2986_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2986+STABILITY: SURFACE MOTION
 JV2986
 JV2986  HISTORY     - Date     Condition        Report By
 JV2986  HISTORY     - 1958     MONUMENTED       CGS
 JV2986
 JV2986                          STATION DESCRIPTION
 JV2986
 JV2986'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2986'6.2 MI NW FROM FREDERICK.
 JV2986'6.2 MILES NORTHWEST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2986'AT FREDERICK, 0.25 MILE SOUTHEAST OF THE T JUNCTION OF RIDGE
 JV2986'ROAD, ON THE OUTSIDE OF A CURVE, 200 FEET NORTHWEST OF A PRIVATE
 JV2986'DRIVE LEADING EAST, 65.3 FEET NORTHEAST OF THE CENTER LINE OF THE
 JV2986'HIGHWAY, 0.7 FOOT SOUTHWEST OF A FENCE, ABOUT 3 FOOT LOWER
 JV2986'THAN THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST
 JV2986'PROJECTING 0.2 FOOT ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2316 ***********************************************************************
 HU2316  DESIGNATION -  GAME AZ MK 2
 HU2316  PID         -  HU2316
 HU2316  STATE/COUNTY-  MD/WICOMICO
 HU2316  COUNTRY     -  US
 HU2316  USGS QUAD   -  DELMAR (2016)
 HU2316
 HU2316                         *CURRENT SURVEY CONTROL
 HU2316  ______________________________________________________________________
 HU2316* NAD 83(1986) POSITION- 38 23 04.     (N) 075 36 26.     (W)   SCALED
 HU2316* NAVD 88 ORTHO HEIGHT -    11.049 (meters)       36.25  (feet) ADJUSTED
 HU2316  ______________________________________________________________________
 HU2316  GEOID HEIGHT    -        -35.785 (meters)                     GEOID18
 HU2316  DYNAMIC HEIGHT  -         11.043 (meters)       36.23  (feet) COMP
 HU2316  MODELED GRAVITY -    980,007.3   (mgal)                       NAVD 88
 HU2316
 HU2316  VERT ORDER      -  SECOND    CLASS I
 HU2316
 HU2316.The horizontal coordinates were scaled from a map and have
 HU2316.an estimated accuracy of +/- 6 seconds.
 HU2316
 HU2316.The orthometric height was determined by differential leveling and
 HU2316.adjusted by the NATIONAL GEODETIC SURVEY
 HU2316.in June 1991.
 HU2316
 HU2316.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2316.GEOID18 height accuracy estimate available here.
 HU2316
 HU2316.Click photographs - Photos may exist for this station.
 HU2316
 HU2316.The dynamic height is computed by dividing the NAVD 88
 HU2316.geopotential number by the normal gravity value computed on the
 HU2316.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2316.degrees latitude (g = 980.6199 gals.).
 HU2316
 HU2316.The modeled gravity was interpolated from observed gravity values.
 HU2316
 HU2316;                    North         East    Units  Estimated Accuracy
 HU2316;SPC MD       -    80,610.      521,680.      MT  (+/- 180 meters Scaled)
 HU2316
 HU2316_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH469486(NAD 83)
 HU2316
 HU2316                          SUPERSEDED SURVEY CONTROL
 HU2316
 HU2316  NGVD 29 (06/12/91)   11.303  (m)           37.08   (f) ADJUSTED    2 1
 HU2316
 HU2316.Superseded values are not recommended for survey control.
 HU2316
 HU2316.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2316.See file dsdata.pdf to determine how the superseded data were derived.
 HU2316
 HU2316_MARKER: DZ = AZIMUTH MARK DISK
 HU2316_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2316_STAMPING: GAME 1956 NO 2 1990
 HU2316_MARK LOGO: NGS
 HU2316_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2316_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2316+STABILITY: SURFACE MOTION
 HU2316_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2316+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1990
 HU2316
 HU2316  HISTORY     - Date     Condition        Report By
 HU2316  HISTORY     - 1990     MONUMENTED       NGS
 HU2316  HISTORY     - 19900129 GOOD             NGS
 HU2316
 HU2316                          STATION DESCRIPTION
 HU2316
 HU2316'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2316'IN SALISBURY, AT THE INTERSECTION OF EAST ROAD AND RICHARDSON STREET,
 HU2316'49.0 M (160.76 FT) EAST OF A FENCE AROUND THE DELMARVA NORTH
 HU2316'SALISBURY SUB STATION, 42.2 M (138.45 FT) EAST OF THE CENTER OF THE
 HU2316'ROAD, 32.5 M (106.63 FT) NORTH OF THE EXTENDED CENTER OF THE STREET,
 HU2316'1.6 M (5.25 FT) EAST-NORTHEAST OF UTILITY POLE NUMBER 46638 93843 33,
 HU2316'LEVEL WITH THE ROAD, AND IN A CONCRETE MONUMENT THAT IS 0.1 M (0.33
 HU2316'FT) BELOW THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2070 ***********************************************************************
 HU2070  DESIGNATION -  GANDER MSFC 1909
 HU2070  PID         -  HU2070
 HU2070  STATE/COUNTY-  MD/DORCHESTER
 HU2070  COUNTRY     -  US
 HU2070  USGS QUAD   -  EAST NEW MARKET (2016)
 HU2070
 HU2070                         *CURRENT SURVEY CONTROL
 HU2070  ______________________________________________________________________
 HU2070* NAD 83(1991) POSITION- 38 35 42.96979(N) 075 58 37.77289(W)   ADJUSTED
 HU2070* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU2070  ______________________________________________________________________
 HU2070  GEOID HEIGHT    -        -35.157 (meters)                     GEOID18
 HU2070  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 HU2070  HORZ ORDER      -  THIRD
 HU2070
 HU2070.The horizontal coordinates were established by classical geodetic methods
 HU2070.and adjusted by the National Geodetic Survey in January 1992.
 HU2070
 HU2070.The orthometric height was scaled from a topographic map.
 HU2070
 HU2070.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2070.GEOID18 height accuracy estimate available here.
 HU2070
 HU2070.Click photographs - Photos may exist for this station.
 HU2070
 HU2070.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2070
 HU2070. The following values were computed from the NAD 83(1991) position.
 HU2070
 HU2070;                    North         East     Units Scale Factor Converg.
 HU2070;SPC MD       -   103,577.702   489,102.317   MT  0.99996177   +0 38 31.1
 HU2070;SPC MD       -   339,821.18  1,604,663.19   sFT  0.99996177   +0 38 31.1
 HU2070;UTM  18      - 4,272,317.436   414,905.227   MT  0.99968917   -0 36 34.6
 HU2070
 HU2070!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2070!SPC MD       -   1.00000540  x   0.99996177  =   0.99996717
 HU2070!UTM  18      -   1.00000540  x   0.99968917  =   0.99969456
 HU2070
 HU2070:                Primary Azimuth Mark                     Grid Az
 HU2070:SPC MD       -  CHIEF MSFC 1909                          189 05 15.1
 HU2070:UTM  18      -  CHIEF MSFC 1909                          190 20 20.8
 HU2070
 HU2070_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1490572317(NAD 83)
 HU2070
 HU2070|---------------------------------------------------------------------|
 HU2070| PID    Reference Object                     Distance      Geod. Az  |
 HU2070|                                                           dddmmss.s |
 HU2070| HU2071 CHIEF MSFC 1909                     APPROX. 1.1 KM 1894346.2 |
 HU2070|---------------------------------------------------------------------|
 HU2070
 HU2070                          SUPERSEDED SURVEY CONTROL
 HU2070
 HU2070  NAD 83(1986)-  38 35 42.96642(N)    075 58 37.79087(W) AD(       ) 3
 HU2070  NAD 27      -  38 35 42.52900(N)    075 58 39.00100(W) AD(       ) 3
 HU2070  USSD        -  38 35 42.93300(N)    075 58 38.80300(W) AD(       ) 3
 HU2070
 HU2070.Superseded values are not recommended for survey control.
 HU2070
 HU2070.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2070.See file dsdata.pdf to determine how the superseded data were derived.
 HU2070
 HU2070_MARKER: H = DRILL HOLE
 HU2070_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2070_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2070+STABILITY: SURFACE MOTION
 HU2070
 HU2070  HISTORY     - Date     Condition        Report By
 HU2070  HISTORY     - 1909     MONUMENTED       MDSFC
 HU2070  HISTORY     - 1941     MARK NOT FOUND   CGS
 HU2070
 HU2070                          STATION DESCRIPTION
 HU2070
 HU2070'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HU2070'ON THE SOUTHEASTERN SHORE OF CHOPTANK RIVER, 3/8 MILE SW OF
 HU2070'ENTRANCE TO GOOSE CREEK, ABOUT 1-3/8 MILES ENE OF OYSTERSHELL
 HU2070'POINT AND ABOUT 1-1/8 MILES SSE OF JAMAICA POINT, IN AN
 HU2070'UNCULTIVATED FIELD, ON A BANK ABOUT 6 FEET ABOVE HIGH WATER, 19
 HU2070'YARDS E OF EDGE OF BANK, 33 YARDS NE OF EDGE OF BANK, 33 YARDS
 HU2070'SE OF EDGE OF BANK, AND 155 YARDS W OF TWO LARGE CEDAR TREES
 HU2070'AT A PALING FENCE.  STATION IS MARKED BY A HOLE IN THE CENTER
 HU2070'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT,
 HU2070'AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HU2070'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HU2070'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS
 HU2070'CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2
 HU2070'INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES
 HU2070'TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY
 HU2070'OF HOUSE, 1-1/4 MILES, S 38 DEG 06 MIN W.  SMOKE PIPE ON WHARF HOUSE,
 HU2070'1 1/8 MILES, S 49 DEG 58 MIN W.  CHIMNEY OF HOUSE, 4-1/2 MILES,
 HU2070'S 59 DEG 44 MIN W.  CHIMNEY OUTSIDE OF HOUSE, 1-1/4 MILES, N 56
 HU2070'DEG 20 MIN W.  RIGHT CHIMNEY OF HOUSE, 1-1/4 MILES, N 32 DEG
 HU2070'28 MIN W.  NEAR PEAK OF JAMAICA POINT WHARF HOUSE, 1-1/8 MILES,
 HU2070'N 23 DEG 58 MIN W.  CHIMNEY OF HOUSE, 2-3/8 MILES, N 21 DEG 12
 HU2070'MIN W.  CHIMNEY OF HOUSE, 3-1/4 MILES, N 05 DEG 52 MIN W.
 HU2070'TANGENT OF POINT, 3/4 MILE, N 02 DEG 34 MIN E.  RIGHT END OF ROOF
 HU2070'OF LONG BARN, 5/8 MILE, N 64 DEG 48 MIN E.  BLACK WALNUT
 HU2070'TREE, 200 YARDS, S 67 DEG 40 MIN E.  CHIMNEY OF HOUSE, 1/4 MILE,
 HU2070'S 05 DEEG MIN E.
 HU2070
 HU2070                          STATION RECOVERY (1941)
 HU2070
 HU2070'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HU2070'STATION SEARCHED FOR BUT NOT FOUND.  THIS MARK WAS SET ON A
 HU2070'BANK WHICH HAS ERODED BADLY AND IN A FIELD WHICH HAS BEEN
 HU2070'CULTIVATED.  THE PRESENT OWNER HAS NEVER SEEN MARK.  IT IS
 HU2070'RECOMMENDED THAT THE STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1503 ***********************************************************************
 HU1503  DESIGNATION -  GANTT
 HU1503  PID         -  HU1503
 HU1503  STATE/COUNTY-  MD/WORCESTER
 HU1503  COUNTRY     -  US
 HU1503  USGS QUAD   -  OCEAN CITY (2016)
 HU1503
 HU1503                         *CURRENT SURVEY CONTROL
 HU1503  ______________________________________________________________________
 HU1503* NAD 83(1991) POSITION- 38 20 29.17441(N) 075 06 24.06172(W)   ADJUSTED
 HU1503* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1503  ______________________________________________________________________
 HU1503  GEOID HEIGHT    -        -36.043 (meters)                     GEOID18
 HU1503  LAPLACE CORR    -         -0.69  (seconds)                    DEFLEC18
 HU1503  HORZ ORDER      -  THIRD
 HU1503
 HU1503.The horizontal coordinates were established by classical geodetic methods
 HU1503.and adjusted by the National Geodetic Survey in January 1992.
 HU1503
 HU1503.The orthometric height was scaled from a topographic map.
 HU1503
 HU1503.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1503.GEOID18 height accuracy estimate available here.
 HU1503
 HU1503.Click photographs - Photos may exist for this station.
 HU1503
 HU1503.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1503
 HU1503. The following values were computed from the NAD 83(1991) position.
 HU1503
 HU1503;                    North         East     Units Scale Factor Converg.
 HU1503;SPC MD       -    76,618.858   565,507.631   MT  0.99999305   +1 11 17.9
 HU1503;SPC MD       -   251,373.70  1,855,336.29   sFT  0.99999305   +1 11 17.9
 HU1503;UTM  18      - 4,243,704.690   490,677.039   MT  0.99960107   -0 03 58.3
 HU1503
 HU1503!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1503!SPC MD       -   1.00000554  x   0.99999305  =   0.99999859
 HU1503!UTM  18      -   1.00000554  x   0.99960107  =   0.99960660
 HU1503
 HU1503:                Primary Azimuth Mark                     Grid Az
 HU1503:SPC MD       -  THOROFARE MSFC 1908                      020 12 58.1
 HU1503:UTM  18      -  THOROFARE MSFC 1908                      021 28 14.3
 HU1503
 HU1503_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9067743704(NAD 83)
 HU1503
 HU1503|---------------------------------------------------------------------|
 HU1503| PID    Reference Object                     Distance      Geod. Az  |
 HU1503|                                                           dddmmss.s |
 HU1503| HU1493 THOROFARE MSFC 1908                 APPROX. 1.5 KM 0212416.0 |
 HU1503| HU1513 CONVENT WATER TOWER                 APPROX. 2.4 KM 0833226.4 |
 HU1503| HU1517 OCEAN CITY WATER TANK               APPROX. 2.1 KM 1280601.8 |
 HU1503| DC5937 GANTT RM                             85.445 METERS 26946     |
 HU1503|---------------------------------------------------------------------|
 HU1503
 HU1503                          SUPERSEDED SURVEY CONTROL
 HU1503
 HU1503  NAD 83(1986)-  38 20 29.15709(N)    075 06 24.09034(W) AD(       ) 3
 HU1503  NAD 27      -  38 20 28.74505(N)    075 06 25.43106(W) AD(       ) 3
 HU1503  USSD        -  38 20 28.93800(N)    075 06 25.21000(W) AD(       ) 3
 HU1503
 HU1503.Superseded values are not recommended for survey control.
 HU1503
 HU1503.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1503.See file dsdata.pdf to determine how the superseded data were derived.
 HU1503
 HU1503_MARKER: H = DRILL HOLE
 HU1503_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1503
 HU1503  HISTORY     - Date     Condition        Report By
 HU1503  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1503  HISTORY     - 1934     MARK NOT FOUND   CGS
 HU1503  HISTORY     - 1958     MARK NOT FOUND   CGS
 HU1503  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1503  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU1503
 HU1503                          STATION DESCRIPTION
 HU1503
 HU1503'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1503'ON THE WESTERN SHORE OF SINEPUXENT BAY, OPPOSITE OCEAN CITY AND
 HU1503'ABOUT 1/2 MILE BACK FROM THE WATER, IN A CULTIVATED FIELD ON
 HU1503'GANTT (FORMERLY DAVIS) FARM, AND ABOUT 10 FEET ABOVE HIGH
 HU1503'WATER.  IT IS ABOUT 300 YARDS N BY W OF THE OLD DAVIS FARMHOUSE,
 HU1503'ON A RIDGE OR SLIGHT RISE IN THE GROUND EXTENDING OUT FROM THE
 HU1503'WOODS, 260 YARDS ESE OF OLD WOODS, AND 90 YARDS E OF A YOUNG
 HU1503'GROWTH OF PINES ADJACENT TO OLD WOODS.  IT IS ALSO ABOUT 70 YARDS
 HU1503'N OF AN E AND W WIRE FENCE AND DITCH AND 83 YARDS W OF AN N
 HU1503'AND S FENCE AND ROAD RUNNING TO FARMHOUSE.  MARKED BY THE CENTER
 HU1503'OF STANDARD CEMENT MONUMENT OF THE MARYLAND SHELL FISH SURVEY
 HU1503'WHICH IS MADE OF CONCRETE 2
 HU1503'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1503'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1503'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1503'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1503'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1503'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1503'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1503'THE LOCATION OF THE STATION.
 HU1503'STATION IS BURIED WITH TOP 2 FEET BELOW THE SURFACE
 HU1503'OF THE GROUND.
 HU1503'
 HU1503'THE REFERENCE MARK IS CENTER OF STANDARD
 HU1503'CEMENT MONUMENT OF MARYLAND SHELL FISH SURVEY.  IT IS 85.44
 HU1503'METERS (280.3 FEET) FROM THE STATION S 89 DEG 46 MIN W.
 HU1503'
 HU1503'OTHER DISTANCES AND AZIMUTHS ARE AS FOLLOWS--NEAR CHIMNEY OF
 HU1503'HOUSE ON TABOR FARM, 3/4 MILE, S 4 DEG 07 MIN W.  E TIP OF BARN ROOF,
 HU1503'3/4 MILE, N 20 DEG 21 MIN E.  CHIMNEY OF THOROFARE FARM HOUSE, 3/4
 HU1503'MILE, N 30 DEG 46 MIN E.  MIDDLE CHIMNEY OF CONVENT, 1-1/2 MILES,
 HU1503'N 84 DEG 16 MIN E.  EPISCOPAL CHURCH SPIRE, 1-1/4 MILES, S 68 DEG
 HU1503'49 MIN E.  CATHOLIC CHURCH CROSS, 1-1/4 MILES, S 54 DEG 35 MIN E.
 HU1503'POWER-HOUSE CHIMNEY, 1-1/4 MILES, S 51 DEG 05 MIN E.
 HU1503'FLAGSTAFF ON SQUARE ROOF OF ATLANTIC HOTEL, 1-1/4 MILES,
 HU1503'S 50 DEG 39 MIN E.  ICE-PLANT STACK, 1-1/4 MILES, S 38 DEG
 HU1503'31 MIN E  .LEFT CHIMNEY OF HOUSE ON TABOR HILL, 1 MILE, S 34 DEG
 HU1503'04 MIN E.
 HU1503
 HU1503                          STATION RECOVERY (1934)
 HU1503
 HU1503'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1503'STATION AND REFERENCE MARK NOT RECOVERED.  PREVIOUS DESCRIPTIONS
 HU1503'WERE CARRIED OUT AND LARGE AREA WAS DUG OVER BUT STATION AND
 HU1503'REFERENCE MARK COULD NOT BE FOUND.
 HU1503
 HU1503                          STATION RECOVERY (1958)
 HU1503
 HU1503'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1503'AT THE LOCATION OF THE STATION IS NOW A POND OF WATER.  WHEN
 HU1503'BUILDING THE 4-LANE U.S. HIGHWAY 50 THIS WAS ALL HAULED OUT TO
 HU1503'MAKE FILL FOR THE NEW HIGHWAY.
 HU1503
 HU1503                          STATION RECOVERY (1962)
 HU1503
 HU1503'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1503'STATION COULD NOT BE FOUND BY THIS PARTY AND SHOULD BE LISTED AS
 HU1503'LOST.
 HU1503
 HU1503                          STATION RECOVERY (2003)
 HU1503
 HU1503'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU1503'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW1320 ***********************************************************************
 FW1320  DESIGNATION -  GAP
 FW1320  PID         -  FW1320
 FW1320  STATE/COUNTY-  MD/SOMERSET
 FW1320  COUNTRY     -  US
 FW1320  USGS QUAD   -  CRISFIELD (2016)
 FW1320
 FW1320                         *CURRENT SURVEY CONTROL
 FW1320  ______________________________________________________________________
 FW1320* NAD 83(1993) POSITION- 37 57 19.97192(N) 075 48 13.26190(W)   ADJUSTED
 FW1320* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 FW1320  ______________________________________________________________________
 FW1320  GEOID HEIGHT    -        -36.172 (meters)                     GEOID18
 FW1320  LAPLACE CORR    -         -1.84  (seconds)                    DEFLEC18
 FW1320  HORZ ORDER      -  THIRD
 FW1320
 FW1320.The horizontal coordinates were established by classical geodetic methods
 FW1320.and adjusted by the National Geodetic Survey in November 1994.
 FW1320
 FW1320.The orthometric height was scaled from a topographic map.
 FW1320
 FW1320.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW1320.GEOID18 height accuracy estimate available here.
 FW1320
 FW1320.Click photographs - Photos may exist for this station.
 FW1320
 FW1320.The Laplace correction was computed from DEFLEC18 derived deflections.
 FW1320
 FW1320. The following values were computed from the NAD 83(1993) position.
 FW1320
 FW1320;                    North         East     Units Scale Factor Converg.
 FW1320;SPC MD       -    32,756.617   505,143.950   MT  1.00007775   +0 45 03.1
 FW1320;SPC MD       -   107,469.00  1,657,293.11   sFT  1.00007775   +0 45 03.1
 FW1320;SPC VA S     - 1,183,415.302 3,736,934.270   MT  0.99999799   +1 38 11.3
 FW1320;SPC VA S     - 3,882,588.37 12,260,258.52   sFT  0.99999799   +1 38 11.3
 FW1320;UTM  18      - 4,201,187.542   429,395.564   MT  0.99966140   -0 29 39.6
 FW1320
 FW1320!             -  Elev Factor  x  Scale Factor =   Combined Factor
 FW1320!SPC MD       -   1.00000572  x   1.00007775  =   1.00008347
 FW1320!SPC VA S     -   1.00000572  x   0.99999799  =   1.00000371
 FW1320!UTM  18      -   1.00000572  x   0.99966140  =   0.99966712
 FW1320
 FW1320:                Primary Azimuth Mark                     Grid Az
 FW1320:SPC MD       -  SCOT                                     082 04 00.5
 FW1320:SPC VA S     -  SCOT                                     081 10 52.3
 FW1320:UTM  18      -  SCOT                                     083 18 43.2
 FW1320
 FW1320_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2939501187(NAD 83)
 FW1320
 FW1320|---------------------------------------------------------------------|
 FW1320| PID    Reference Object                     Distance      Geod. Az  |
 FW1320|                                                           dddmmss.s |
 FW1320| FW1139 SCOT                                APPROX. 5.9 KM 0824903.6 |
 FW1320|---------------------------------------------------------------------|
 FW1320
 FW1320                          SUPERSEDED SURVEY CONTROL
 FW1320
 FW1320  NAD 83(1991)-  37 57 19.97306(N)    075 48 13.26750(W) AD(       ) 3
 FW1320  NAD 83(1986)-  37 57 19.97031(N)    075 48 13.28969(W) AD(       ) 3
 FW1320  NAD 27      -  37 57 19.52200(N)    075 48 14.52900(W) AD(       ) 3
 FW1320  USSD        -  37 57 19.88200(N)    075 48 14.30100(W) AD(       ) 3
 FW1320
 FW1320.Superseded values are not recommended for survey control.
 FW1320
 FW1320.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW1320.See file dsdata.pdf to determine how the superseded data were derived.
 FW1320
 FW1320_MARKER: N = NAIL
 FW1320_SETTING: 0 = UNSPECIFIED SETTING
 FW1320_MARK LOGO: VACF
 FW1320_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 FW1320
 FW1320  HISTORY     - Date     Condition        Report By
 FW1320  HISTORY     - 1916     MONUMENTED       VACF
 FW1320  HISTORY     - 1942     GOOD             CGS
 FW1320  HISTORY     - 1967     GOOD             MDDNR
 FW1320  HISTORY     - 1973     GOOD             MDDNR
 FW1320  HISTORY     - 1987     GOOD             LOCSUR
 FW1320
 FW1320                          STATION DESCRIPTION
 FW1320
 FW1320'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (WDP)
 FW1320'THE STATION IS LOCATED ON THE N SHORE OF POCOMOKE SOUND ABOUT
 FW1320'265 FEET N OF THE S TIP OF GAP POINT AT ENTRANCE TO APES HOLE,
 FW1320'123.75 FEET N OF A LAND POINT AT A COVE, AND 86.0 FEET E OF THE
 FW1320'HIGH-WATER LINE OF A SMALL LAND POINT.
 FW1320'
 FW1320'THE STATION IS MARKED BY A 10-PENNY NAIL SET FLUSH IN TOP OF A
 FW1320'20-INCH TRIANGULAR CONCRETE SLAB WHICH IS FLUSH WITH THE
 FW1320'GROUND.  THE STATION IS IN GOOD CONDITION.
 FW1320'
 FW1320'NO PERMANENT REFERENCE MARKS WERE EVER SET.
 FW1320
 FW1320                          STATION RECOVERY (1967)
 FW1320
 FW1320'RECOVERY NOTE BY MD DEPT OF NAT RES 1967 (GEH)
 FW1320'STATION RECOVERED GOOD.
 FW1320'
 FW1320'CHANGE DESCRIPTION--THE STATION IS ABOUT 2 IN BELOW SURFACE OF
 FW1320'MARSH IN DENSE WATER BUSHES ABOUT 60 FT. ELY OF HIGHWATER MARK,
 FW1320'45 FT. WLY OF HIGHWATER MARK, AND ABOUT 200 FT. NLY OF GAP
 FW1320'PT.  MANY OLD STUBS SURROUND THE STATION.
 FW1320
 FW1320                          STATION RECOVERY (1973)
 FW1320
 FW1320'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 FW1320'RECOVERED AS DESCRIBED WITH ADDS--STA. 6 IN BELOW SURFACE OF
 FW1320'MARSH, MDNR WOOD SIGNAL BUILT OVER STA.  WITNESS POST AND SIGN
 FW1320'PLACED 2.8 FT WEST OF STA.
 FW1320'
 FW1320'NO RMS ESTAB.
 FW1320
 FW1320                          STATION RECOVERY (1987)
 FW1320
 FW1320'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1987 (LW)
 FW1320'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7215 ***********************************************************************
 JV7215  DESIGNATION -  GAP
 JV7215  PID         -  JV7215
 JV7215  STATE/COUNTY-  MD/FREDERICK
 JV7215  COUNTRY     -  US
 JV7215  USGS QUAD   -  MIDDLETOWN (2016)
 JV7215
 JV7215                         *CURRENT SURVEY CONTROL
 JV7215  ______________________________________________________________________
 JV7215* NAD 83(2011) POSITION- 39 22 51.23038(N) 077 36 50.90440(W)   ADJUSTED
 JV7215* NAD 83(2011) ELLIP HT-   132.302 (meters)        (06/27/12)   ADJUSTED
 JV7215* NAD 83(2011) EPOCH   -  2010.00
 JV7215* NAVD 88 ORTHO HEIGHT -   165.5   (meters)      543.    (feet) GPS OBS
 JV7215  ______________________________________________________________________
 JV7215  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7215  GEOID HEIGHT    -        -33.500 (meters)                     GEOID93
 JV7215  GEOID HEIGHT    -        -33.172 (meters)                     GEOID18
 JV7215  NAD 83(2011) X  -  1,058,895.779 (meters)                     COMP
 JV7215  NAD 83(2011) Y  - -4,821,807.871 (meters)                     COMP
 JV7215  NAD 83(2011) Z  -  4,025,175.347 (meters)                     COMP
 JV7215  LAPLACE CORR    -          6.37  (seconds)                    DEFLEC18
 JV7215
 JV7215  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7215  Standards:
 JV7215         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7215            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7215  -------------------------------------------------------------------
 JV7215  NETWORK    1.83   2.06           0.78   0.71   1.05     -0.05621544
 JV7215  -------------------------------------------------------------------
 JV7215  Click here for local accuracies and other accuracy information.
 JV7215
 JV7215.The horizontal coordinates were established by GPS observations
 JV7215.and adjusted by the National Geodetic Survey in June 2012.
 JV7215
 JV7215.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7215.been affixed to the stable North American tectonic plate. See 
 JV7215.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7215
 JV7215.The horizontal coordinates are valid at the epoch date displayed above
 JV7215.which is a decimal equivalence of Year/Month/Day.
 JV7215
 JV7215.The orthometric height was determined by GPS observations and a
 JV7215.high-resolution geoid model.
 JV7215
 JV7215.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7215.GEOID18 height accuracy estimate available here.
 JV7215
 JV7215.Click photographs - Photos may exist for this station.
 JV7215
 JV7215.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7215
 JV7215.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7215
 JV7215.The ellipsoidal height was determined by GPS observations
 JV7215.and is referenced to NAD 83.
 JV7215
 JV7215. The following values were computed from the NAD 83(2011) position.
 JV7215
 JV7215;                    North         East     Units Scale Factor Converg.
 JV7215;SPC MD       -   190,469.674   347,086.667   MT  0.99998864   -0 23 07.6
 JV7215;SPC MD       -   624,899.26  1,138,733.51   sFT  0.99998864   -0 23 07.6
 JV7215;UTM  18      - 4,362,306.772   274,840.302   MT  1.00022424   -1 39 33.5
 JV7215
 JV7215!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7215!SPC MD       -   0.99997924  x   0.99998864  =   0.99996788
 JV7215!UTM  18      -   0.99997924  x   1.00022424  =   1.00020348
 JV7215
 JV7215_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7484062306(NAD 83)
 JV7215
 JV7215                          SUPERSEDED SURVEY CONTROL
 JV7215
 JV7215  NAD 83(2007)-  39 22 51.23058(N)    077 36 50.90508(W) AD(2002.00) 0
 JV7215  ELLIP H (02/10/07)  132.327  (m)                       GP(2002.00)    
 JV7215  ELLIP H (08/30/02)  132.342  (m)                       GP(       ) 4 2
 JV7215  NAD 83(1991)-  39 22 51.23097(N)    077 36 50.90467(W) AD(       ) 1
 JV7215  ELLIP H (02/09/94)  132.255  (m)                       GP(       ) 4 1
 JV7215
 JV7215.Superseded values are not recommended for survey control.
 JV7215
 JV7215.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7215.See file dsdata.pdf to determine how the superseded data were derived.
 JV7215
 JV7215_MARKER: DD = SURVEY DISK
 JV7215_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7215_STAMPING: GAP 1993
 JV7215_MARK LOGO: MD-021
 JV7215_PROJECTION: RECESSED 3 CENTIMETERS
 JV7215_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7215_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7215+STABILITY: SURFACE MOTION
 JV7215_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7215+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2020
 JV7215
 JV7215  HISTORY     - Date     Condition        Report By
 JV7215  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7215  HISTORY     - 20110730 GOOD             GEOCAC
 JV7215  HISTORY     - 20200516 GOOD             NGS
 JV7215
 JV7215                          STATION DESCRIPTION
 JV7215
 JV7215'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7215'FROM FREDERICK, MD, TAKE MD RTE 340 WEST TO EXIT 8 (LANDER ROAD).
 JV7215'NORTH ON LANDER ROAD TO MD RTE 180 (JEFFERSON PIKE). WEST ON RTE 180
 JV7215'TO MD RTE 383 (BROAD RUN ROAD). NORTH ON RTE 383 4.3 MILES (6.9 KM)
 JV7215'TO CATHOLIC CHURCH ROAD. LEFT ON CATHOLIC CHURCH ROAD AND 1.3 MILES
 JV7215'(2.1 KM) SOUTHWEST TO INTERSECTION WITH GAPLAND ROAD. CONTINUE PAST
 JV7215'INTERSECTION ON CATHOLIC CHURCH ROAD 0.1 MILE (0.2 KM) TO STATION ON
 JV7215'RIGHT. STATION IS 13 FEET (4.0 M) NORTHWEST OF CENTERLINE OF CATHOLIC
 JV7215'CHURCH ROAD, 62.5 FEET (19.1 M) FROM C AND P POLE 292 AND 66.5 FEET
 JV7215'(20.3 M) FROM C AND P POLE 291 (THE SAME BEING POTOMAC EDISON POLE
 JV7215'F65676). STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND
 JV7215'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7215
 JV7215                          STATION RECOVERY (2011)
 JV7215
 JV7215'RECOVERY NOTE BY GEOCACHING 2011 (MFM)
 JV7215'RECOVERED AS DESCRIBED.
 JV7215
 JV7215                          STATION RECOVERY (2020)
 JV7215
 JV7215'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2020 (JH)
 JV7215'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DE9125 ***********************************************************************
 DE9125  DESIGNATION -  GAPP
 DE9125  PID         -  DE9125
 DE9125  STATE/COUNTY-  MD/SOMERSET
 DE9125  COUNTRY     -  US
 DE9125  USGS QUAD   -  MARION (2016)
 DE9125
 DE9125                         *CURRENT SURVEY CONTROL
 DE9125  ______________________________________________________________________
 DE9125* NAD 83(1986) POSITION- 38 00 28.3    (N) 075 50 36.0    (W)   HD_HELD2
 DE9125* NAVD 88 ORTHO HEIGHT -     0.722 (meters)        2.37  (feet) ADJUSTED
 DE9125  ______________________________________________________________________
 DE9125  GEOID HEIGHT    -        -36.067 (meters)                     GEOID18
 DE9125  DYNAMIC HEIGHT  -          0.722 (meters)        2.37  (feet) COMP
 DE9125  MODELED GRAVITY -    979,974.7   (mgal)                       NAVD 88
 DE9125
 DE9125  VERT ORDER      -  SECOND    CLASS I
 DE9125
 DE9125.The horizontal coordinates were established by autonomous hand held GPS
 DE9125.observations and have an estimated accuracy of +/- 10 meters.
 DE9125
 DE9125.The orthometric height was determined by differential leveling and
 DE9125.adjusted by the NATIONAL GEODETIC SURVEY
 DE9125.in February 2003.
 DE9125
 DE9125.No vertical observational check was made to the station.
 DE9125
 DE9125.Significant digits in the geoid height do not necessarily reflect accuracy.
 DE9125.GEOID18 height accuracy estimate available here.
 DE9125
 DE9125.Click photographs - Photos may exist for this station.
 DE9125
 DE9125.The dynamic height is computed by dividing the NAVD 88
 DE9125.geopotential number by the normal gravity value computed on the
 DE9125.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DE9125.degrees latitude (g = 980.6199 gals.).
 DE9125
 DE9125.The modeled gravity was interpolated from observed gravity values.
 DE9125
 DE9125;                    North         East    Units  Estimated Accuracy
 DE9125;SPC MD       -    38,518.      501,586.      MT  (+/- 10 meters HH2 GPS)
 DE9125
 DE9125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2596407022(NAD 83)
 DE9125
 DE9125                          SUPERSEDED SURVEY CONTROL
 DE9125
 DE9125.No superseded survey control is available for this station.
 DE9125
 DE9125_MARKER: DH = HORIZONTAL CONTROL DISK
 DE9125_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DE9125_STAMPING: GAPP 1996
 DE9125_MARK LOGO: USACE
 DE9125_MAGNETIC: N = NO MAGNETIC MATERIAL
 DE9125_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DE9125_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DE9125+SATELLITE: SATELLITE OBSERVATIONS - April 02, 2008
 DE9125
 DE9125  HISTORY     - Date     Condition        Report By
 DE9125  HISTORY     - 1996     MONUMENTED       USACE
 DE9125  HISTORY     - 20021029 GOOD             NGS
 DE9125  HISTORY     - 20051026 GOOD             NGS
 DE9125  HISTORY     - 20080401 GOOD             USACE
 DE9125  HISTORY     - 20080402 GOOD             USACE
 DE9125
 DE9125                          STATION DESCRIPTION
 DE9125
 DE9125'DESCRIBED BY NATIONAL GEODETIC SURVEY 2002 (DBC)
 DE9125'TO REACH THE STATION FROM THE INTERSECTIONS OF MARYLAND
 DE9125'AVENUE/RICHARDSON AVENUE (US HIGHWAY 413) SOMERSET AVENUE AND
 DE9125'JACKSONVILLE ROAD NEAR THE CITY WATER TANK IN CRISFIELD.  GO 1.1 MILES
 DE9125'(1.8 KM) NORTHEASTERLY ALONG JACKSONVILLE ROAD TO THE JUNCTION OF
 DE9125'ALFRED J LAWSON DRIVE ON THE LEFT (ENTRANCE ROAD TO JANES ISLAND STATE
 DE9125'PARK) TURN LEFT, NORTHWEST ON ALFRED J LAWSON DRIVE FOR 0.25 MILE
 DE9125'(0.40 KM) TO THE STATION ON THE RIGHT.  THE STATION IS A US CORP OF
 DE9125'ENGINEERS ALUMINUM HORIZONTAL DISK STAMPED LONG 1996, SET IN THE TOP
 DE9125'OF A 12 INCH CONCRETE POST IN THE SOUTHWEST GRASSY SHOULDER OF THE
 DE9125'ROAD ABOUT FLUSH WITH THE GROUND.  LOCATED 21.2 FEET (6.5 M) SOUTHWEST
 DE9125'OF THE CENTER OF THE ROAD, 187.3 FEET (57.1 M) OF POWER POLE 39729,
 DE9125'80189, 39G-T7, AND 12.5 FEET (3.8 M) NORTHEAST OF A CORP OF ENGINEERS
 DE9125'FIBERGLASS WITNESS POST AT THE EDGE OF A DITCH 1.0 FEET (0.3 M) BELOW
 DE9125'ROAD.
 DE9125
 DE9125                          STATION RECOVERY (2005)
 DE9125
 DE9125'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DE9125'RECOVERED AS DESCRIBED.
 DE9125
 DE9125                          STATION RECOVERY (2008)
 DE9125
 DE9125'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2008 (HLC)
 DE9125'RECOVERED AS DESCRIBED
 DE9125
 DE9125                          STATION RECOVERY (2008)
 DE9125
 DE9125'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2008 (HLC)
 DE9125'RECOVERED AS DESCRIBED EXCEPT TURN LEFT ON ALFRED J LAWSON DRIVE FOR
 DE9125'0.25 MILES (0.40 KM) TO STATION ON LEFT
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7267 ***********************************************************************
 JV7267  DESIGNATION -  GARAGE
 JV7267  PID         -  JV7267
 JV7267  STATE/COUNTY-  MD/QUEEN ANNES
 JV7267  COUNTRY     -  US
 JV7267  USGS QUAD   -  CENTREVILLE (2017)
 JV7267
 JV7267                         *CURRENT SURVEY CONTROL
 JV7267  ______________________________________________________________________
 JV7267* NAD 83(1986) POSITION- 39 01 56.9    (N) 076 01 10.0    (W)   HD_HELD2
 JV7267* NAVD 88 ORTHO HEIGHT -    25.246 (meters)       82.83  (feet) ADJUSTED
 JV7267  ______________________________________________________________________
 JV7267  GEOID HEIGHT    -        -33.968 (meters)                     GEOID18
 JV7267  DYNAMIC HEIGHT  -         25.233 (meters)       82.79  (feet) COMP
 JV7267  MODELED GRAVITY -    980,081.1   (mgal)                       NAVD 88
 JV7267
 JV7267  VERT ORDER      -  SECOND    CLASS I
 JV7267
 JV7267.The horizontal coordinates were established by autonomous hand held GPS
 JV7267.observations and have an estimated accuracy of +/- 10 meters.
 JV7267
 JV7267.The orthometric height was determined by differential leveling and
 JV7267.adjusted by the NATIONAL GEODETIC SURVEY
 JV7267.in July 1996.
 JV7267
 JV7267.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7267.GEOID18 height accuracy estimate available here.
 JV7267
 JV7267.Click photographs - Photos may exist for this station.
 JV7267
 JV7267.The dynamic height is computed by dividing the NAVD 88
 JV7267.geopotential number by the normal gravity value computed on the
 JV7267.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7267.degrees latitude (g = 980.6199 gals.).
 JV7267
 JV7267.The modeled gravity was interpolated from observed gravity values.
 JV7267
 JV7267;                    North         East    Units  Estimated Accuracy
 JV7267;SPC MD       -   152,067.      484,898.      MT  (+/- 10 meters HH2 GPS)
 JV7267
 JV7267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1176320874(NAD 83)
 JV7267
 JV7267                          SUPERSEDED SURVEY CONTROL
 JV7267
 JV7267.No superseded survey control is available for this station.
 JV7267
 JV7267_MARKER: DD = SURVEY DISK
 JV7267_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7267_STAMPING: GARAGE 1989
 JV7267_MARK LOGO: MDSHA
 JV7267_PROJECTION: RECESSED 10 CENTIMETERS
 JV7267_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV7267_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7267+STABILITY: SURFACE MOTION
 JV7267_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7267+SATELLITE: SATELLITE OBSERVATIONS - May 03, 2013
 JV7267
 JV7267  HISTORY     - Date     Condition        Report By
 JV7267  HISTORY     - 1989     MONUMENTED       MDSHA
 JV7267  HISTORY     - 19910301 GOOD             MDSHA
 JV7267  HISTORY     - 20020224 GOOD             USPSQD
 JV7267  HISTORY     - 20130503 GOOD             ARCSHE
 JV7267
 JV7267                          STATION DESCRIPTION
 JV7267
 JV7267'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JV7267'THE MARKER IS LOCATED ABOUT 2.6 MI (4.2 KM) SOUTHEAST OF CENTERVILLE
 JV7267'AND 7.1 MI (11.4 KM) NORTHEAST OF WYE MILLS.  THE PROPERTY IS OWNED BY
 JV7267'THE MARYLAND STATE HIGHWAY ADMISTRATION, CENTERVILLE DISTRICT TWO
 JV7267'GARAGE.
 JV7267'
 JV7267'TO REACH THE MARKER FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND
 JV7267'STATE HIGHWAY 304, GO EAST ON STATE HIGHWAY 304 FOR 0.2 MI (0.3 KM) TO
 JV7267'SAFTEY DRIVE ON THE LEFT.  TURN LEFT AND GO NORTH ON SAFTEY DRIVE FOR
 JV7267'0.3 MI (0.5 KM) TO A Y-INTERSECTION.  BEAR LEFT AND GO NORTHWEST FOR
 JV7267'0.05 MI (0.08 KM) ONTO THE GROUNDS OF THE HIGHWAY GARAGE.  TURN RIGHT
 JV7267'AND GO NORTH ACROSS A MACADEM PARKING LOT 0.1 MI (0.2 KM) TO A MACADEM
 JV7267'ENTRANCE TO A GRAVEL PARKING LOT ON THE RIGHT.  TURN RIGHT AND GO
 JV7267'NORTH-NORTHEAST ON A GRAVEL PARKING LOT FOR ABOUT 200.0 FT (61.0 M) TO
 JV7267'THE MARK AT THE FAR EDGE.
 JV7267'
 JV7267'THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION
 JV7267'SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT
 JV7267'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 52.2 FT (15.9 M)
 JV7267'SOUTHWEST OF THE NORTHEAST CORNER OF THE FENCE AND 10.0 FT (3.0 M)
 JV7267'SOUTH OF THE MOST NORTH EAST-WEST FENCE LINE.
 JV7267
 JV7267                          STATION RECOVERY (2002)
 JV7267
 JV7267'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV7267'THE MARK IS 1.5 FEET S OF MARYLAND HIGHWAY ADMINISTRATION CARSONITE
 JV7267'POST.
 JV7267
 JV7267                          STATION RECOVERY (2013)
 JV7267
 JV7267'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JV7267'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7268 ***********************************************************************
 JV7268  DESIGNATION -  GARAGE AZ MK
 JV7268  PID         -  JV7268
 JV7268  STATE/COUNTY-  MD/QUEEN ANNES
 JV7268  COUNTRY     -  US
 JV7268  USGS QUAD   -  CENTREVILLE (2017)
 JV7268
 JV7268                         *CURRENT SURVEY CONTROL
 JV7268  ______________________________________________________________________
 JV7268* NAD 83(2011) POSITION- 39 02 20.45979(N) 076 00 53.45235(W)   ADJUSTED
 JV7268* NAD 83(2011) ELLIP HT-   -14.485 (meters)        (06/27/12)   ADJUSTED
 JV7268* NAD 83(2011) EPOCH   -  2010.00
 JV7268* NAVD 88 ORTHO HEIGHT -    19.481 (meters)       63.91  (feet) ADJUSTED
 JV7268  ______________________________________________________________________
 JV7268  GEOID HEIGHT    -        -33.950 (meters)                     GEOID18
 JV7268  NAD 83(2011) X  -  1,198,827.746 (meters)                     COMP
 JV7268  NAD 83(2011) Y  - -4,813,549.200 (meters)                     COMP
 JV7268  NAD 83(2011) Z  -  3,995,673.149 (meters)                     COMP
 JV7268  LAPLACE CORR    -         -4.24  (seconds)                    DEFLEC18
 JV7268  DYNAMIC HEIGHT  -         19.470 (meters)       63.88  (feet) COMP
 JV7268  MODELED GRAVITY -    980,082.6   (mgal)                       NAVD 88
 JV7268
 JV7268  VERT ORDER      -  SECOND    CLASS I
 JV7268
 JV7268  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7268  Standards:
 JV7268         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7268            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7268  -------------------------------------------------------------------
 JV7268  NETWORK    3.30   5.12           1.17   1.49   2.61     -0.10372308
 JV7268  -------------------------------------------------------------------
 JV7268  Click here for local accuracies and other accuracy information.
 JV7268
 JV7268.The horizontal coordinates were established by GPS observations
 JV7268.and adjusted by the National Geodetic Survey in June 2012.
 JV7268
 JV7268.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7268.been affixed to the stable North American tectonic plate. See 
 JV7268.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7268
 JV7268.The horizontal coordinates are valid at the epoch date displayed above
 JV7268.which is a decimal equivalence of Year/Month/Day.
 JV7268
 JV7268.The orthometric height was determined by differential leveling and
 JV7268.adjusted by the NATIONAL GEODETIC SURVEY
 JV7268.in July 1996.
 JV7268
 JV7268.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7268.GEOID18 height accuracy estimate available here.
 JV7268
 JV7268.Click photographs - Photos may exist for this station.
 JV7268
 JV7268.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7268
 JV7268.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7268
 JV7268.The ellipsoidal height was determined by GPS observations
 JV7268.and is referenced to NAD 83.
 JV7268
 JV7268.The dynamic height is computed by dividing the NAVD 88
 JV7268.geopotential number by the normal gravity value computed on the
 JV7268.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7268.degrees latitude (g = 980.6199 gals.).
 JV7268
 JV7268.The modeled gravity was interpolated from observed gravity values.
 JV7268
 JV7268. The following values were computed from the NAD 83(2011) position.
 JV7268
 JV7268;                    North         East     Units Scale Factor Converg.
 JV7268;SPC MD       -   152,797.668   485,287.709   MT  0.99995389   +0 37 05.9
 JV7268;SPC MD       -   501,303.68  1,592,148.09   sFT  0.99995389   +0 37 05.9
 JV7268;UTM  18      - 4,321,596.265   412,169.866   MT  0.99969499   -0 38 21.3
 JV7268
 JV7268!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7268!SPC MD       -   1.00000227  x   0.99995389  =   0.99995616
 JV7268!UTM  18      -   1.00000227  x   0.99969499  =   0.99969726
 JV7268
 JV7268_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1216921596(NAD 83)
 JV7268
 JV7268                          SUPERSEDED SURVEY CONTROL
 JV7268
 JV7268  NAD 83(2007)-  39 02 20.46000(N)    076 00 53.45309(W) AD(2002.00) 1
 JV7268  ELLIP H (04/02/09)  -14.454  (m)                       GP(2002.00) 4 1
 JV7268  NAD 83(1991)-  39 02 20.46004(N)    076 00 53.45330(W) AD(       ) 1
 JV7268  ELLIP H (10/15/07)  -14.451  (m)                       GP(       ) 4 1
 JV7268  NAVD 88              19.48   (m)           63.9    (f) LEVELING    3  
 JV7268
 JV7268.Superseded values are not recommended for survey control.
 JV7268
 JV7268.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7268.See file dsdata.pdf to determine how the superseded data were derived.
 JV7268
 JV7268_MARKER: DD = SURVEY DISK
 JV7268_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7268_STAMPING: GARAGE AZ 1989
 JV7268_MARK LOGO: MDSHA
 JV7268_PROJECTION: FLUSH
 JV7268_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV7268_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7268+STABILITY: SURFACE MOTION
 JV7268_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7268+SATELLITE: SATELLITE OBSERVATIONS - February 12, 2013
 JV7268
 JV7268  HISTORY     - Date     Condition        Report By
 JV7268  HISTORY     - 1989     MONUMENTED       MDSHA
 JV7268  HISTORY     - 19910301 GOOD             MDSHA
 JV7268  HISTORY     - 20020224 GOOD             USPSQD
 JV7268  HISTORY     - 20020529 GOOD             MDSHA
 JV7268  HISTORY     - 20041127 GOOD             USPSQD
 JV7268  HISTORY     - 20080422 GOOD             NGS
 JV7268  HISTORY     - 20130212 GOOD             ARCSHE
 JV7268
 JV7268                          STATION DESCRIPTION
 JV7268
 JV7268'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JV7268'THE MARKER IS LOCATED ABOUT 2.75 MI (4.43 KM) EAST-SOUTHEAST OF
 JV7268'CENTERVILLE, 7.6 MI (12.2 KM) NORTHEAST OF WYE MILLS AND ATOP A LOW
 JV7268'CUTBANK ALONG THE OLD MARYLAND AND DELAWARE RAILROAD.  IT IS ON
 JV7268'RAILROAD RIGHT-OF-WAY.
 JV7268'
 JV7268'TO REACH THE MARKER FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND
 JV7268'STATE HIGHWAY 304, GO NORTH ON U.S. HIGHWAY 301 FOR I.0 MITO THE
 JV7268'MARKER ON THE RIGHT.
 JV7268'
 JV7268'THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION
 JV7268'SURVEY DISK SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT
 JV7268'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 133.4 FT
 JV7268'(40.7 M) EAST OF THE CENTER OF THE NORTHBOUND LANE OF U.S.HIGHWAY 301,
 JV7268'27.9 FT (8.5 M) NORTHWEST OF THE CENTER OF THE RAILROAD TRACKS, 232.2
 JV7268'FT (70.8 M) NORTHWEST OF A POWERLINE POLE NUMBERED 618 AND 187.6 FT
 JV7268'(57.2 M) SOUTHWEST OF A POWERLINE POLE NUMBERED 619.
 JV7268
 JV7268                          STATION RECOVERY (2002)
 JV7268
 JV7268'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV7268'THE MARK IS 1.5 FEET N OF A NOAA CARSONITE POST, IN THE TOP OF A HILL
 JV7268'FORMED BY RAILROAD GRADE CONSTRUCTION.
 JV7268
 JV7268                          STATION RECOVERY (2002)
 JV7268
 JV7268'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 JV7268'RECOVERED AS DESCRIBED WITH THE FOLLOWING ADDITION.  THE MARK IS
 JV7268'APPROXIMATELY 400 FT (121.9 M) NORTHEAST ALONG US 301 FROM THE
 JV7268'INTERSECTION OF US 301 AND THE CENTER OF THE RAILROAD TRACKS.
 JV7268
 JV7268                          STATION RECOVERY (2004)
 JV7268
 JV7268'RECOVERY NOTE BY US POWER SQUADRON 2004 (JKW)
 JV7268'RECOVERED IN GOOD CONDITION.
 JV7268
 JV7268                          STATION RECOVERY (2008)
 JV7268
 JV7268'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 JV7268'RECOVERED IN GOOD CONDITION.
 JV7268
 JV7268                          STATION RECOVERY (2013)
 JV7268
 JV7268'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JV7268'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1015 ***********************************************************************
 HV1015  DESIGNATION -  GARDNER
 HV1015  PID         -  HV1015
 HV1015  STATE/COUNTY-  MD/CHARLES
 HV1015  COUNTRY     -  US
 HV1015  USGS QUAD   -  LA PLATA (2016)
 HV1015
 HV1015                         *CURRENT SURVEY CONTROL
 HV1015  ______________________________________________________________________
 HV1015* NAD 83(1993) POSITION- 38 33 21.59541(N) 076 53 12.40127(W)   ADJUSTED
 HV1015* NAVD 88 ORTHO HEIGHT -    60.623 (meters)      198.89  (feet) ADJUSTED
 HV1015  ______________________________________________________________________
 HV1015  GEOID HEIGHT    -        -33.191 (meters)                     GEOID18
 HV1015  LAPLACE CORR    -         -5.08  (seconds)                    DEFLEC18
 HV1015  DYNAMIC HEIGHT  -         60.586 (meters)      198.77  (feet) COMP
 HV1015  MODELED GRAVITY -    980,024.8   (mgal)                       NAVD 88
 HV1015
 HV1015  HORZ ORDER      -  SECOND
 HV1015  VERT ORDER      -  SECOND    CLASS 0
 HV1015
 HV1015.The horizontal coordinates were established by classical geodetic methods
 HV1015.and adjusted by the National Geodetic Survey in November 1994.
 HV1015
 HV1015.The orthometric height was determined by differential leveling and
 HV1015.adjusted by the NATIONAL GEODETIC SURVEY
 HV1015.in June 1991.
 HV1015
 HV1015.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1015.GEOID18 height accuracy estimate available here.
 HV1015
 HV1015.Click photographs - Photos may exist for this station.
 HV1015
 HV1015.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1015
 HV1015.The dynamic height is computed by dividing the NAVD 88
 HV1015.geopotential number by the normal gravity value computed on the
 HV1015.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1015.degrees latitude (g = 980.6199 gals.).
 HV1015
 HV1015.The modeled gravity was interpolated from observed gravity values.
 HV1015
 HV1015. The following values were computed from the NAD 83(1993) position.
 HV1015
 HV1015;                    North         East     Units Scale Factor Converg.
 HV1015;SPC MD       -    98,725.469   409,868.661   MT  0.99996534   +0 04 15.8
 HV1015;SPC MD       -   323,901.81  1,344,710.77   sFT  0.99996534   +0 04 15.8
 HV1015;UTM  18      - 4,269,194.673   335,597.720   MT  0.99993285   -1 10 34.5
 HV1015
 HV1015!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1015!SPC MD       -   0.99999570  x   0.99996534  =   0.99996104
 HV1015!UTM  18      -   0.99999570  x   0.99993285  =   0.99992855
 HV1015
 HV1015:                Primary Azimuth Mark                     Grid Az
 HV1015:SPC MD       -  MUDD                                     041 42 05.3
 HV1015:UTM  18      -  MUDD                                     042 56 55.6
 HV1015
 HV1015_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3559769194(NAD 83)
 HV1015
 HV1015|---------------------------------------------------------------------|
 HV1015| PID    Reference Object                     Distance      Geod. Az  |
 HV1015|                                                           dddmmss.s |
 HV1015| HV7419 MUDD                                APPROX. 8.0 KM 0414621.1 |
 HV1015| HV1016 GARDNER RM 1                         33.891 METERS 05516     |
 HV1015| CX2792 GARDNER RM 3                         15.114 METERS 11407     |
 HV1015| CX2790 GARDNER AZ MK                                      1262824.0 |
 HV1015| CX2791 GARDNER RM 2                         31.085 METERS 14034     |
 HV1015|---------------------------------------------------------------------|
 HV1015
 HV1015                          SUPERSEDED SURVEY CONTROL
 HV1015
 HV1015  NAD 83(1991)-  38 33 21.59472(N)    076 53 12.40314(W) AD(       ) 2
 HV1015  NAD 83(1986)-  38 33 21.59453(N)    076 53 12.41638(W) AD(       ) 2
 HV1015  NAD 27      -  38 33 21.16408(N)    076 53 13.52086(W) AD(       ) 2
 HV1015  NGVD 29              60.87   (m)          199.7    (f) LEVELING    3  
 HV1015  NGVD 29 (11/26/84)   60.855  (m)          199.66   (f) ADJUSTED    2 0
 HV1015
 HV1015.Superseded values are not recommended for survey control.
 HV1015
 HV1015.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1015.See file dsdata.pdf to determine how the superseded data were derived.
 HV1015
 HV1015_MARKER: DS = TRIANGULATION STATION DISK
 HV1015_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1015_STAMPING: GARDNER 1943
 HV1015_MARK LOGO: CGS
 HV1015_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1015+STABILITY: SURFACE MOTION
 HV1015
 HV1015  HISTORY     - Date     Condition        Report By
 HV1015  HISTORY     - 1943     MONUMENTED       CGS
 HV1015  HISTORY     - 1951     MARK NOT FOUND   LOCSUR
 HV1015  HISTORY     - 1956     MARK NOT FOUND   USGS
 HV1015  HISTORY     - 1967     GOOD             MDSRC
 HV1015  HISTORY     - 1975     GOOD             NGS
 HV1015
 HV1015                          STATION DESCRIPTION
 HV1015
 HV1015'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV1015'THE STATION IS LOCATED ABOUT 2.3 MILES (AIRLINE) WEST OF
 HV1015'BRYANTOWN, ON LAND OWNED BY KATHERINE GARDNER AND RENANTED BY
 HV1015'OTHERS.  IT IS AT THE NORTHWEST CORNER OF A FIELD
 HV1015'(THE FIELD IS ABOUT 5 FEET HIGHER IN THE CENTER), AT THE EDGE
 HV1015'OF A WOODS AND 10 FEET SOUTH OF THE CONTINUATION OF THE CENTER
 HV1015'LINE OF THE ROAD LEADING NORTHWEST.  IT IS STAMPED GARDNER 1943
 HV1015'AND PROJECTS 1 FOOT.
 HV1015'
 HV1015'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 HV1015'DISKS SET IN CONCRETE.
 HV1015'
 HV1015'REFERENCE MARK NO. 1 IS NORTHEAST OF THE STATION, 7 FEET
 HV1015'NORTHEAST OF THE CENTER LINE OF THE ROAD, STAMPED GARDNER NO. 1,
 HV1015'1943 AND PROJECTS 6 INCHES.
 HV1015'
 HV1015'REFERENCE MARK NO. 2 IS SOUTH SOUTHWEST OF THE STATION AND AT
 HV1015'THE EDGE OF THE WOODS ON THE NORTHWEST SIDE OF THE FIELD.  IT
 HV1015'IS STAMPED GARDNER NO. 2 1943 AND PROJECTS 6 INCHES.
 HV1015'
 HV1015'THE AZIMUTH MARK IS ABOUT 0.3 MILE SOUTH BY WEST OF THE
 HV1015'STATION IN A FARM HOUSE YARD.  IT IS 2 FEET NORTH OF A GATE POST,
 HV1015'7 FEET NORTHEAST OF THE CENTER OF THE DRIVEWAY AND 49 FEET WEST
 HV1015'SOUTHWEST OF A 3-FOOT POPLAR TREE.  IT IS STAMPED GARDNER 1943
 HV1015'AND PROJECTS 8 INCHES.
 HV1015'
 HV1015'TO REACH FROM THE STATION, GO EASTERLY FOR 0.1 MILE, THEN TURN
 HV1015'RIGHT AND GO 0.1 MILE, TO THE MACADAM ROAD.  CONTINUE STRAIGHT
 HV1015'AHEAD ACROSS THE MACADAM ROAD AND FOLLOW A FARM LANE FOR 0.2
 HV1015'MILE TO A GATE AT FARM YARD AND THE MARK AS DESCRIBED.
 HV1015'
 HV1015'TO REACH THE STATION FROM BRYANTOWN, GO NORTHWEST ON STATE
 HV1015'HIGHWAY 5 FOR 1.4 MILE (TOWARD WALDORF).  THEN TURN LEFT ON A
 HV1015'MACADAM SIDE ROAD AND GO 1.5 MILES.  HERE TURN RIGHT ON A DIRT
 HV1015'ROAD FOR 0.1 MILE.  THEN TURN LEFT AND GO 0.1 MILE TO THE
 HV1015'NORTHWEST CORNER OF A FIELD AND THE STATION AS DESCRIBED.
 HV1015'
 HV1015'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT ROBERTS.
 HV1015'
 HV1015'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WHEATLEY 1942.
 HV1015'
 HV1015'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT MUDD.
 HV1015'
 HV1015'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT PORT 1942.
 HV1015'
 HV1015'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT GUTRIDGE.
 HV1015'
 HV1015'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WALDORF.
 HV1015'
 HV1015'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 HV1015
 HV1015                          STATION RECOVERY (1951)
 HV1015
 HV1015'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1951 (DHS)
 HV1015'LETTER OF COMDR H.A. PATON, BALTIMORE PHOTOGRAMMETRIC OFFICER,
 HV1015'BALTIMORE, MD. DATED 8/1/51, AND PHONE CALL FROM MR. D.H. STEFFENS,
 HV1015'BRYANTOWN, MD.--DTD
 HV1015'
 HV1015'THE AZIMUTH MARK WAS DESTROYED DUE TO NEW CONSTRUCTION.
 HV1015'
 HV1015'AZIMUTH MARK DISK STAMPED GARDNER 1943 RECEIVED AT THIS OFFICE
 HV1015'8/22/51.
 HV1015
 HV1015                          STATION RECOVERY (1956)
 HV1015
 HV1015'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956
 HV1015'SURFACE MARKER FOR TRIANGULATION STATION PROBABLY DESTROYED AS THERE
 HV1015'HAS BEEN SOME WIDENING OF THE FIELD IN THIS AREA.  R.M. NO. 2 FOUND
 HV1015'DESTROYED.  R.M. NO. 1 WAS NOT FOUND, PROBABLY DESTROYED.  AZIMUTH
 HV1015'MARK WAS DESTROYED BY LANDSCAPING.
 HV1015
 HV1015                          STATION RECOVERY (1967)
 HV1015
 HV1015'RECOVERY NOTE BY MD STATE ROADS COMM 1967
 HV1015'5.5 MI NE FROM LA PLATA.
 HV1015'FROM THE COURTHOUSE IN LA PLATA PROCEED EAST ALONG MARYLAND
 HV1015'HIGHWAY 6 (CHARLES STREET) FOR 1.1 MILES TO THE INTERSECTION
 HV1015'OF MARYLAND HIGHWAY 488, THENCE NORTHEAST ALONG MARYLAND HIGHWAY
 HV1015'488 FOR 0.6 MILE TO Y INTERSECTION CONTINUE ALONG MARYLAND
 HV1015'HIGHWAY 488 FOR 3.8 MILES TO SIDE ROAD LEADING NORTH, THENCE
 HV1015'NORTH ON SIDE ROAD FOR 0.1 MILE.  IT IS IN THE NORTHWEST CORNER
 HV1015'OF A FIELD, AT THE EDGE OF A WOODS, 10.0 FEET SOUTH OF THE
 HV1015'CONTINUATION OF THE CENTERLINE OF THE ROAD LEADING NORTHWEST
 HV1015'SET IN THE TOP OF A CONCRETE POST AND PROJECTS 1 FOOT.
 HV1015
 HV1015                          STATION RECOVERY (1975)
 HV1015
 HV1015'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HV1015'THE STATION MARK AND REFERENCE MARK 1 WERE RECOVERED AND FOUND
 HV1015'IN GOOD CONDITION.  REFERENCE MARK 2 WAS FOUND DESTROYED.  THE
 HV1015'AZIMUTH MARK WAS DESTROYED IN 1951.  A NEW REFERENCE MARK 3 WAS
 HV1015'ESTABLISHED AT THIS DATE.  THERE IS NO SUITABLE PLACE TO SET A
 HV1015'NEW AZIMUTH MARK AT THIS DATE.
 HV1015'
 HV1015'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HV1015'
 HV1015'THE STATION IS LOCATED 2-1/4 MILES WEST OF BRYANTOWN, 5 MILES
 HV1015'EAST NORTHEAST OF LA PLATA AND 6 MILES SOUTH OF WALDORF.  IT IS
 HV1015'ON PROPERTY OWNED BY MRS. MINNIE NAYLOR.
 HV1015'
 HV1015'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND STATE
 HV1015'HIGHWAY 6 IN LA PLATA, GO EAST ON STATE HIGHWAY 6 FOR 1.4 MILE
 HV1015'TO STATE HIGHWAY 488.  TURN LEFT AND GO NORTHEAST ON STATE
 HV1015'HIGHWAY 488 FOR 0.5 MILES TO A FORK.  KEEP RIGHT AND CONTINUE
 HV1015'IN A EASTERLY DIRECTION ON STATE HIGHWAY 488 FOR 3.9 MILES TO
 HV1015'THE STATION ON THE LEFT, IN THE WEST EDGE OF A FIELD AND 0.05
 HV1015'MILES NORTH OF THE ROAD.
 HV1015'
 HV1015'THE STATION MARK IS A STANDARD DISK STAMPED GARDNER 1943, SET
 HV1015'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT PROJECTING
 HV1015'2-INCHES.  IT IS 355 FEET NORTH OF THE CENTER OF STATE HIGHWAY
 HV1015'488, 130 FEET WEST OF A NARROW STRIP OF WOODS, 15 FEET WEST OF
 HV1015'THE WEST EDGE OF THE CULTIVATED FIELD, AND 3.4 FEET EAST OF A
 HV1015'WITNESS POST.
 HV1015'
 HV1015'REFERENCE MARK 1 IS A STANDARD DISK STAMPED GARDNER NO 1 1943,
 HV1015'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT PROJECTING
 HV1015'4-INCHES.  IT IS 95 FEET EAST OF THE WEST EDGE OF THE FIELD,
 HV1015'114.6 FEET EAST OF THE WITNESS POST AND 19 FEET WEST OF THE
 HV1015'NARROW STRIP OF WOODS.
 HV1015'
 HV1015'REFERENCE MARK 3 IS A STANDARD DISK STAMPED GARDNER 1943 NO 3
 HV1015'1975, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT
 HV1015'PROJECTING 1-INCH.  IT IS 51.6 FEET SOUTHEAST OF THE WITNESS
 HV1015'POST AND 10 FEET EAST OF THE EAST EDGE OF THE WOODS.
 HV1015'
 HV1015'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV1015'2-1/4 MILES WEST OF BRYANTOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1016 ***********************************************************************
 HV1016  DESIGNATION -  GARDNER RM 1
 HV1016  PID         -  HV1016
 HV1016  STATE/COUNTY-  MD/CHARLES
 HV1016  COUNTRY     -  US
 HV1016  USGS QUAD   -  LA PLATA (2016)
 HV1016
 HV1016                         *CURRENT SURVEY CONTROL
 HV1016  ______________________________________________________________________
 HV1016* NAD 83(1986) POSITION- 38 33 22.22   (N) 076 53 11.25   (W)   HD_HELD1
 HV1016* NAVD 88 ORTHO HEIGHT -    59.511 (meters)      195.25  (feet) ADJUSTED
 HV1016  ______________________________________________________________________
 HV1016  GEOID HEIGHT    -        -33.191 (meters)                     GEOID18
 HV1016  DYNAMIC HEIGHT  -         59.475 (meters)      195.13  (feet) COMP
 HV1016  MODELED GRAVITY -    980,024.9   (mgal)                       NAVD 88
 HV1016
 HV1016  VERT ORDER      -  SECOND    CLASS 0
 HV1016
 HV1016.The horizontal coordinates were determined by differentially corrected
 HV1016.hand held GPS observations or other comparable positioning techniques
 HV1016.and have an estimated accuracy of +/- 3 meters.
 HV1016
 HV1016.The orthometric height was determined by differential leveling and
 HV1016.adjusted by the NATIONAL GEODETIC SURVEY
 HV1016.in June 1991.
 HV1016
 HV1016.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1016.GEOID18 height accuracy estimate available here.
 HV1016
 HV1016.Click photographs - Photos may exist for this station.
 HV1016
 HV1016.The dynamic height is computed by dividing the NAVD 88
 HV1016.geopotential number by the normal gravity value computed on the
 HV1016.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1016.degrees latitude (g = 980.6199 gals.).
 HV1016
 HV1016.The modeled gravity was interpolated from observed gravity values.
 HV1016
 HV1016;                    North         East    Units  Estimated Accuracy
 HV1016;SPC MD       -    98,744.8     409,896.5     MT  (+/- 3 meters HH1 GPS) 
 HV1016
 HV1016_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3562569213(NAD 83)
 HV1016
 HV1016                          SUPERSEDED SURVEY CONTROL
 HV1016
 HV1016  NGVD 29 (11/26/84)   59.743  (m)          196.01   (f) ADJUSTED    2 0
 HV1016
 HV1016.Superseded values are not recommended for survey control.
 HV1016
 HV1016.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1016.See file dsdata.pdf to determine how the superseded data were derived.
 HV1016
 HV1016_MARKER: DR = REFERENCE MARK DISK
 HV1016_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1016_STAMPING: GARDNER NO 1 1943
 HV1016_MARK LOGO: CGS
 HV1016_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1016+STABILITY: SURFACE MOTION
 HV1016
 HV1016  HISTORY     - Date     Condition        Report By
 HV1016  HISTORY     - 1943     MONUMENTED       CGS
 HV1016  HISTORY     - 1967     GOOD             MDSRC
 HV1016  HISTORY     - 1975     GOOD             NGS
 HV1016
 HV1016                          STATION DESCRIPTION
 HV1016
 HV1016'DESCRIBED BY MD STATE ROADS COMM 1967
 HV1016'5.5 MI NE FROM LA PLATA.
 HV1016'FROM THE COURTHOUSE IN LA PLATA PROCEED EAST ALONG MARYLAND
 HV1016'HIGHWAY 6 (CHARLES STREET) FOR 1.1 MILES TO THE INTERSECTION
 HV1016'OF MARYLAND HIGHWAY 488, THENCE NORTHEAST ALONG MARYLAND
 HV1016'HIGHWAY 488 FOR 0.6 MILE TO Y INTERSECTION CONTINUE ALONG
 HV1016'MARYLAND HIGHWAY 488 FOR 3.8 MILES TO SIDE ROAD LEADING NORTH,
 HV1016'THENCE NORTH ON SIDE ROAD FOR 0.1 MILE, 111.19 FEET NORTHEAST OF THE
 HV1016'TRIANGULATION STATION, 7.0 FEET NORTHEAST OF THE CENTERLINE
 HV1016'OF THE ROAD, SET IN THE TOP OF A CONCRETE POST PROJECTING
 HV1016'6 INCHES.
 HV1016
 HV1016                          STATION RECOVERY (1975)
 HV1016
 HV1016'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV1016'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4980 ***********************************************************************
 HV4980  DESIGNATION -  GARNER
 HV4980  PID         -  HV4980
 HV4980  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4980  COUNTRY     -  US
 HV4980  USGS QUAD   -  MOUNT VERNON (2019)
 HV4980
 HV4980                         *CURRENT SURVEY CONTROL
 HV4980  ______________________________________________________________________
 HV4980* NAD 83(2011) POSITION- 38 40 37.32026(N) 077 04 07.94852(W)   ADJUSTED
 HV4980* NAD 83(2011) ELLIP HT-    19.457 (meters)        (06/27/12)   ADJUSTED
 HV4980* NAD 83(2011) EPOCH   -  2010.00
 HV4980* NAVD 88 ORTHO HEIGHT -    51.9   (meters)      170.    (feet) GPS OBS
 HV4980  ______________________________________________________________________
 HV4980  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV4980  GEOID HEIGHT    -        -32.830 (meters)                     GEOID93
 HV4980  GEOID HEIGHT    -        -32.457 (meters)                     GEOID18
 HV4980  NAD 83(2011) X  -  1,115,726.458 (meters)                     COMP
 HV4980  NAD 83(2011) Y  - -4,859,385.378 (meters)                     COMP
 HV4980  NAD 83(2011) Z  -  3,964,402.492 (meters)                     COMP
 HV4980  LAPLACE CORR    -         -1.76  (seconds)                    DEFLEC18
 HV4980
 HV4980  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV4980  Standards:
 HV4980         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV4980            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV4980  -------------------------------------------------------------------
 HV4980  NETWORK    1.51   3.39           0.64   0.59   1.73     -0.02571876
 HV4980  -------------------------------------------------------------------
 HV4980  Click here for local accuracies and other accuracy information.
 HV4980
 HV4980.The horizontal coordinates were established by GPS observations
 HV4980.and adjusted by the National Geodetic Survey in June 2012.
 HV4980
 HV4980.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV4980.been affixed to the stable North American tectonic plate. See 
 HV4980.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV4980
 HV4980.The horizontal coordinates are valid at the epoch date displayed above
 HV4980.which is a decimal equivalence of Year/Month/Day.
 HV4980
 HV4980.The orthometric height was determined by GPS observations and a
 HV4980.high-resolution geoid model.
 HV4980
 HV4980.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4980.GEOID18 height accuracy estimate available here.
 HV4980
 HV4980.Click photographs - Photos may exist for this station.
 HV4980
 HV4980.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV4980
 HV4980.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4980
 HV4980.The ellipsoidal height was determined by GPS observations
 HV4980.and is referenced to NAD 83.
 HV4980
 HV4980. The following values were computed from the NAD 83(2011) position.
 HV4980
 HV4980;                    North         East     Units Scale Factor Converg.
 HV4980;SPC MD       -   112,156.915   394,006.879   MT  0.99995583   -0 02 35.6
 HV4980;SPC MD       -   367,968.15  1,292,670.90   sFT  0.99995583   -0 02 35.6
 HV4980;SPC VA N     - 2,113,120.089 3,624,523.459   MT  0.99994892   +0 53 35.5
 HV4980;SPC VA N     - 6,932,794.83 11,891,457.38   sFT  0.99994892   +0 53 35.5
 HV4980;UTM  18      - 4,282,968.641   320,032.306   MT  0.99999886   -1 17 35.7
 HV4980
 HV4980!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4980!SPC MD       -   0.99999695  x   0.99995583  =   0.99995278
 HV4980!SPC VA N     -   0.99999695  x   0.99994892  =   0.99994587
 HV4980!UTM  18      -   0.99999695  x   0.99999886  =   0.99999581
 HV4980
 HV4980:                Primary Azimuth Mark                     Grid Az
 HV4980:SPC MD       -  MOUNT VERNON 3                           340 31 46.1
 HV4980:SPC VA N     -  MOUNT VERNON 3                           339 35 35.0
 HV4980:UTM  18      -  MOUNT VERNON 3                           341 46 46.2
 HV4980
 HV4980_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2003282968(NAD 83)
 HV4980
 HV4980|---------------------------------------------------------------------|
 HV4980| PID    Reference Object                     Distance      Geod. Az  |
 HV4980|                                                           dddmmss.s |
 HV4980| DE5039 GARNER RM 1                          26.695 METERS 05803     |
 HV4980| HV4992 17543 WSSC 1970                     291.061 METERS 07219     |
 HV4980| DE5040 GARNER RM 2                          24.836 METERS 13554     |
 HV4980| HV4979 BRYANS ROAD MICROWAVE               APPROX. 3.9 KM 1792244.7 |
 HV4980| HV4975 MOUNT VERNON 3                      APPROX. 3.9 KM 3402910.5 |
 HV4980|---------------------------------------------------------------------|
 HV4980
 HV4980                          SUPERSEDED SURVEY CONTROL
 HV4980
 HV4980  NAD 83(2007)-  38 40 37.32071(N)    077 04 07.94932(W) AD(2002.00) 0
 HV4980  ELLIP H (02/10/07)   19.461  (m)                       GP(2002.00)    
 HV4980  ELLIP H (08/30/02)   19.474  (m)                       GP(       ) 4 2
 HV4980  NAD 83(1993)-  38 40 37.32050(N)    077 04 07.94970(W) AD(       ) 1
 HV4980  ELLIP H (11/14/94)   19.507  (m)                       GP(       ) 4 2
 HV4980  ELLIP H (09/09/94)   19.506  (m)                       GP(       ) 4 1
 HV4980  NAD 83(1991)-  38 40 37.31864(N)    077 04 07.95125(W) AD(       ) 1
 HV4980  NAD 83(1986)-  38 40 37.31984(N)    077 04 07.96408(W) AD(       ) 1
 HV4980  NAD 27      -  38 40 36.90489(N)    077 04 09.04521(W) AD(       ) 1
 HV4980  NGVD 29 (07/19/86)   52.2    (m)          171.     (f) VERT ANG       
 HV4980
 HV4980.Superseded values are not recommended for survey control.
 HV4980
 HV4980.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4980.See file dsdata.pdf to determine how the superseded data were derived.
 HV4980
 HV4980_MARKER: DS = TRIANGULATION STATION DISK
 HV4980_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4980_STAMPING: GARNER 1970
 HV4980_MARK LOGO: CGS
 HV4980_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV4980_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4980+STABILITY: SURFACE MOTION
 HV4980_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV4980+SATELLITE: SATELLITE OBSERVATIONS - March 31, 1993
 HV4980
 HV4980  HISTORY     - Date     Condition        Report By
 HV4980  HISTORY     - 1970     MONUMENTED       NGS
 HV4980  HISTORY     - 1970     GOOD             NGS
 HV4980  HISTORY     - 19930331 GOOD             MSI
 HV4980
 HV4980                          STATION DESCRIPTION
 HV4980
 HV4980'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV4980'THE STATION IS ABOUT 15 MILES SOUTH OF THE CENTER OF WASHINGTON,
 HV4980'D.C., 2-1/2 MILES SOUTH-SOUTHEAST OF MOUNT VERNON, 1-1/2 MILES
 HV4980'EAST OF MARSHALL HALL, 2 MILES NORTHWEST OF ACCOKEEK, 1 MILE
 HV4980'SOUTH-SOUTHEAST OF THE POTOMAC RIVER, AND ABOUT 0.05 MILE EAST OF
 HV4980'THE PRINCE GEORGES-CHARLES COUNTY LINES.
 HV4980'
 HV4980'TO REACH THE STATION FROM THE ACCOKEEK POST OFFICE GO SOUTH
 HV4980'ON LIVINGSTON ROAD FOR 0.8 MILE TO A SIDE ROAD ON THE RIGHT, OLD
 HV4980'MARSHALL HALL ROAD.  TURN RIGHT AND GO NORTH WEST ON OLD MARSHALL
 HV4980'HALL ROAD FOR 0.55 MILE TO A CROSSROAD, ACCOKEEK ROAD.  CONTINUE
 HV4980'NORTHWEST ON OLD MARSHALL ROAD FOR 0.85 MILE TO A SIDE ROAD ON
 HV4980'THE LEFT, NEW MARSHALL HALL ROAD.  CONTINUE NORTHWEST ON OLD
 HV4980'MARSHALL HALL ROAD FOR 1.0 MILE TO A CURVE AND TWO DIRT SIDE
 HV4980'ROADS ON THE RIGHT.  CONTINUE ON OLD MARSHALL HALL ROAD
 HV4980'GOING WEST FOR 0.3 MILE TO A SIDE ROAD ON THE RIGHT, POPLAR
 HV4980'HILL ROAD.  (TO REACH THE AZ MK FROM HERE GO EAST ON OLD
 HV4980'MARSHALL HALL ROAD FOR 0.05 MILE TO AZ MK ON THE RIGHT.  THE
 HV4980'AZ MK IS 0.15 MILE EAST OF THE STATION.) CONTINUE AHEAD FOR
 HV4980'0.1 MILE TO THE STATION IN AN OPEN FIELD ON THE LEFT.
 HV4980'
 HV4980'THE STATION MARK IS A STANDARD DISK, STAMPED GARNER 1970, SET
 HV4980'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV4980'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 82.5 FEET NORTH-NORTHWEST
 HV4980'OF A POWERLINE POLE, 75.5 FEET WEST OF THE CENTERLINE OF A
 HV4980'GRAVELED ROAD, 69.7 FEET SOUTHWEST OF WEST GATE POST OF A GATE,
 HV4980'33.5 FEET SOUTH OF CENTERLINE OF OLD MARSHALL HALL ROAD, AND
 HV4980'21.6 FEET SOUTH OF A FENCE.  THE UNDERGROUND MARK IS 40 INCHES
 HV4980'BELOW THE GROUND.
 HV4980'
 HV4980'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED GARNER NO 1 1970,
 HV4980'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV4980'THAT PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 13.0 FEET SOUTH
 HV4980'OF THE CENTERLINE OF OLD MARSHALL HALL ROAD, 11.0 FEET WEST OF
 HV4980'CENTERLINE OF A TRACK ROAD, 3.9 FEET SOUTHWEST OF THE EAST GATE
 HV4980'POST, 3.0 FEET WEST OF A FENCE, AND 1.3 FEET SOUTHWEST OF A
 HV4980'WITNESS POST.  IT IS ABOUT 2 FEET LOWER THAN THE STATION.
 HV4980'
 HV4980'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED GARNER NO 2 1970,
 HV4980'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV4980'THAT PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 71.3 WEST OF A
 HV4980'FENCE, 65.0 FEET EAST OF A FENCE, 43.5 FEET WEST OF THE
 HV4980'CENTERLINE OF A TRACK ROAD, AND 1.8 FEET NORTHEAST OF A POWERLINE
 HV4980'POLE.  IT IS ABOUT 1 FOOT LOWER THAN THE STATION.
 HV4980'
 HV4980'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED GARNER 1970, SET
 HV4980'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV4980'PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 58.0 FEET SOUTH OF THE
 HV4980'CENTERLINE OF OLD MARSHALL HALL ROAD, 44.6 FEET SOUTH OF THE
 HV4980'EAST GATE POST, 1.3 FEET NORTHWEST OF A WITNESS POST, AND 1.0
 HV4980'FEET WEST OF A FENCE.
 HV4980
 HV4980                          STATION RECOVERY (1970)
 HV4980
 HV4980'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 HV4980'RECOVERED IN GOOD CONDITION.
 HV4980
 HV4980                          STATION RECOVERY (1993)
 HV4980
 HV4980'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV4980'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0149 ***********************************************************************
 JV0149  DESIGNATION -  GARRETT
 JV0149  PID         -  JV0149
 JV0149  STATE/COUNTY-  MD/HARFORD
 JV0149  COUNTRY     -  US
 JV0149  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0149
 JV0149                         *CURRENT SURVEY CONTROL
 JV0149  ______________________________________________________________________
 JV0149* NAD 83(1991) POSITION- 39 34 20.82302(N) 076 06 52.03341(W)   ADJUSTED
 JV0149* NAVD 88 ORTHO HEIGHT -    99.205 (meters)      325.48  (feet) ADJUSTED
 JV0149  ______________________________________________________________________
 JV0149  GEOID HEIGHT    -        -33.062 (meters)                     GEOID18
 JV0149  LAPLACE CORR    -         -4.08  (seconds)                    DEFLEC18
 JV0149  DYNAMIC HEIGHT  -         99.156 (meters)      325.31  (feet) COMP
 JV0149  MODELED GRAVITY -    980,130.8   (mgal)                       NAVD 88
 JV0149
 JV0149  HORZ ORDER      -  THIRD
 JV0149  VERT ORDER      -  SECOND    CLASS 0
 JV0149
 JV0149.The horizontal coordinates were established by classical geodetic methods
 JV0149.and adjusted by the National Geodetic Survey in January 1992.
 JV0149
 JV0149.The orthometric height was determined by differential leveling and
 JV0149.adjusted by the NATIONAL GEODETIC SURVEY
 JV0149.in June 1991.
 JV0149
 JV0149.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0149.GEOID18 height accuracy estimate available here.
 JV0149
 JV0149.Click photographs - Photos may exist for this station.
 JV0149
 JV0149.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0149
 JV0149.The dynamic height is computed by dividing the NAVD 88
 JV0149.geopotential number by the normal gravity value computed on the
 JV0149.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0149.degrees latitude (g = 980.6199 gals.).
 JV0149
 JV0149.The modeled gravity was interpolated from observed gravity values.
 JV0149
 JV0149. The following values were computed from the NAD 83(1991) position.
 JV0149
 JV0149;                    North         East     Units Scale Factor Converg.
 JV0149;SPC MD       -   211,928.010   476,090.333   MT  1.00002372   +0 33 20.9
 JV0149;SPC MD       -   695,300.48  1,561,973.03   sFT  1.00002372   +0 33 20.9
 JV0149;UTM  18      - 4,380,898.292   404,278.775   MT  0.99971281   -0 42 36.1
 JV0149
 JV0149!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0149!SPC MD       -   0.99998962  x   1.00002372  =   1.00001334
 JV0149!UTM  18      -   0.99998962  x   0.99971281  =   0.99970244
 JV0149
 JV0149:                Primary Azimuth Mark                     Grid Az
 JV0149:SPC MD       -  PERRY POINT VET HOSP NE STACK            118 48 31.8
 JV0149:UTM  18      -  PERRY POINT VET HOSP NE STACK            120 04 28.8
 JV0149
 JV0149_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0427880898(NAD 83)
 JV0149
 JV0149|---------------------------------------------------------------------|
 JV0149| PID    Reference Object                     Distance      Geod. Az  |
 JV0149|                                                           dddmmss.s |
 JV0149| JV0148 GARRETT RM 2                         11.232 METERS 00708     |
 JV0149| JV4786 BAINBRIDGE NAVAL STA S TANK         APPROX. 5.4 KM 0365116.1 |
 JV0149| JV4778 PERRY POINT VET HOSP NE STACK       APPROX. 4.7 KM 1192152.7 |
 JV0149| JV4777 PERRY POINT VET HOSP SW STACK       APPROX. 4.7 KM 1193555.2 |
 JV0149| JV0147 GARRETT RM 1                          6.692 METERS 25330     |
 JV0149|---------------------------------------------------------------------|
 JV0149
 JV0149                          SUPERSEDED SURVEY CONTROL
 JV0149
 JV0149  NAD 83(1986)-  39 34 20.81646(N)    076 06 52.03879(W) AD(       ) 3
 JV0149  NAD 27      -  39 34 20.42560(N)    076 06 53.21940(W) AD(       ) 3
 JV0149  NGVD 29              99.51   (m)          326.5    (f) LEVELING    3  
 JV0149  NGVD 29 (11/26/84)   99.476  (m)          326.36   (f) ADJUSTED    2 0
 JV0149
 JV0149.Superseded values are not recommended for survey control.
 JV0149
 JV0149.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0149.See file dsdata.pdf to determine how the superseded data were derived.
 JV0149
 JV0149_MARKER: DS = TRIANGULATION STATION DISK
 JV0149_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0149_STAMPING: GARRETT 1958
 JV0149_MARK LOGO: CGS
 JV0149_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0149+STABILITY: SURFACE MOTION
 JV0149
 JV0149  HISTORY     - Date     Condition        Report By
 JV0149  HISTORY     - 1958     MONUMENTED       CGS
 JV0149  HISTORY     - 1959     GOOD             CGS
 JV0149  HISTORY     - 1971     MARK NOT FOUND   HOCO
 JV0149
 JV0149                          STATION DESCRIPTION
 JV0149
 JV0149'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0149'THE STATION IS LOCATED ABOUT 1-1/2 MILES NORTH-NORTHWEST OF
 JV0149'HAVRE DE GRACE.  IT IS 7 FEET WEST OF WEST EDGE OF OPEN FIELD,
 JV0149'6-1/2 FEET NORTH OF WITNESS POST AND 21 FEET EAST OF A
 JV0149'TRIANGLE-BLAZED TREE.  THE MARK IS A STANDARD TRIANGULATION
 JV0149'STATION MARK DISK SET IN TOP OF A 12X12 INCH CONCRETE POST
 JV0149'PROJECTING ABOUT 4 INCHES AND THE DISK IS STAMPED GARRETT 1958.
 JV0149'
 JV0149'REFERENCE MARK NO. 1 IS 26-1/2 FEET WEST OF WITNESS POST, 32 FEET
 JV0149'WEST OF EAST EDGE OF WOODS AND 9-1/2 FEET SOUTH-SOUTHWEST OF A
 JV0149'TRIANGLE-BLAZED TREE.  THE MARK IS A STANDARD REFERENCE MARK DISK
 JV0149'SET IN TOP OF A 12X12 INCH CONCRETE POST PROJECTING ABOUT 4 INCHES
 JV0149'AND THE DISK IS STAMPED GARRETT NO 1 1958.
 JV0149'
 JV0149'REFERENCE MARK NO. 2 IS 15 FEET WEST OF EAST EDGE OF WOODS.  THE
 JV0149'MARK IS STANDARD REFERENCE MARK DISK SET IN TOP OF A 12X12 INCH
 JV0149'CONCRETE POST, WHICH PROJECTS ABOUT 6 INCHES AND THE DISK IS
 JV0149'STAMPED GARRETT NO 2 1958.
 JV0149'
 JV0149'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV0149'STATE HIGHWAYS 155 AND 7 IN HAVRE DE GRACE, GO NORTHWEST ON
 JV0149'STATE HIGHWAY 155 FOR 0.2 MILES TO REVERSE Y, KEEP LEFT AND
 JV0149'CONTINUE ON STATE HIGHWAY 155 FOR 1.0 MILE TO SIDE ROAD RIGHT,
 JV0149'TURN RIGHT AND GO NORTHERLY ON GRAVEL ROAD FOR 0.55 MILE TO FARM
 JV0149'HOUSE.  CONTINUE STRAIGHT AHEAD ON DIM TRACK ROAD TO EDGE OF
 JV0149'WOODS, KEEP RIGHT AND GO ALONG EDGE OF WOODS FOR 0.1 MILE TO WOODS
 JV0149'ROAD LEFT, FOLLOW WOODS ROAD FOR 0.4 MILE TO EDGE OF OPEN
 JV0149'FIELD, TURN LEFT AND GO ABOUT 200 FEET TO THE STATION ON LEFT
 JV0149'AS DESCRIBED.
 JV0149'
 JV0149'NO AZIMUTH MARK WAS ESTABLISHED.
 JV0149'
 JV0149'HEIGHT OF LIGHT ABOVE STATION MARK 3 METERS.
 JV0149
 JV0149                          STATION RECOVERY (1959)
 JV0149
 JV0149'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV0149'2.4 MI NW FROM HAVRE DE GRACE.
 JV0149'ABOUT 1.4 MILES NORTHWEST ALONG STATE HIGHWAY 155 FROM ITS
 JV0149'INTERSECTION WITH U.S. HIGHWAY 40 AT HAVRE DE GRACE, THENCE
 JV0149'0.6 MILE NORTH ALONG A GRAVELED ROAD TO A FARM HOUSE ON RIGHT,
 JV0149'THENCE 0.4 MILE NORTHEAST ALONG A DIM WOODS ROAD TO A CLEAR
 JV0149'FIELD, 7 FEET WEST OF THE WEST EDGE OF AN OPEN FIELD, 21
 JV0149'FEET EAST OF A TREE WITH A TRIANGULAR BLAZE, 6 1/2 FEET NORTH
 JV0149'OF A METAL WITNESS POST AND SET IN THE TOP OF A CONCRETE POST
 JV0149'PROJECTING 4 INCHES ABOVE THE GROUND.
 JV0149
 JV0149                          STATION RECOVERY (1971)
 JV0149
 JV0149'RECOVERY NOTE BY HONOLULU OIL COMPANY 1971 (JW)
 JV0149'MONUMENT NOT RECOVERED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1533 ***********************************************************************
 JW1533  PACS        -  This is a Primary Airport Control Station.
 JW1533  DESIGNATION -  GARRETT
 JW1533  PID         -  JW1533
 JW1533  STATE/COUNTY-  MD/GARRETT
 JW1533  COUNTRY     -  US
 JW1533  USGS QUAD   -  MCHENRY (2016)
 JW1533
 JW1533                         *CURRENT SURVEY CONTROL
 JW1533  ______________________________________________________________________
 JW1533* NAD 83(2011) POSITION- 39 34 46.63798(N) 079 20 31.28611(W)   ADJUSTED
 JW1533* NAD 83(2011) ELLIP HT-   861.349 (meters)        (06/27/12)   ADJUSTED
 JW1533* NAD 83(2011) EPOCH   -  2010.00
 JW1533* NAVD 88 ORTHO HEIGHT -   892.68  (meters)     2928.7   (feet) GPS OBS
 JW1533  ______________________________________________________________________
 JW1533  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JW1533  GEOID HEIGHT    -        -31.634 (meters)                     GEOID93
 JW1533  GEOID HEIGHT    -        -31.288 (meters)                     GEOID18
 JW1533  NAD 83(2011) X  -    910,533.250 (meters)                     COMP
 JW1533  NAD 83(2011) Y  - -4,838,309.788 (meters)                     COMP
 JW1533  NAD 83(2011) Z  -  4,042,669.625 (meters)                     COMP
 JW1533  LAPLACE CORR    -          0.01  (seconds)                    DEFLEC18
 JW1533
 JW1533  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1533  Standards:
 JW1533         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1533            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1533  -------------------------------------------------------------------
 JW1533  NETWORK    0.91   1.80           0.41   0.32   0.92     -0.14893701
 JW1533  -------------------------------------------------------------------
 JW1533  Click here for local accuracies and other accuracy information.
 JW1533
 JW1533.This mark is at Garrett County Airport (2G4)
 JW1533
 JW1533.The horizontal coordinates were established by GPS observations
 JW1533.and adjusted by the National Geodetic Survey in June 2012.
 JW1533
 JW1533.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1533.been affixed to the stable North American tectonic plate. See 
 JW1533.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1533
 JW1533.The horizontal coordinates are valid at the epoch date displayed above
 JW1533.which is a decimal equivalence of Year/Month/Day.
 JW1533
 JW1533.The orthometric height was determined by GPS observations and a
 JW1533.high-resolution geoid model.
 JW1533
 JW1533.GPS derived orthometric heights for airport stations designated as
 JW1533.PACS or SACS are published to 2 decimal places.  This maintains
 JW1533.centimeter relative accuracy between the PACS and SACS.  It does
 JW1533.not indicate centimeter accuracy relative to other marks which are
 JW1533.part of the published vertical control network.
 JW1533
 JW1533.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1533.GEOID18 height accuracy estimate available here.
 JW1533
 JW1533.Click photographs - Photos may exist for this station.
 JW1533
 JW1533.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1533
 JW1533.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1533
 JW1533.The ellipsoidal height was determined by GPS observations
 JW1533.and is referenced to NAD 83.
 JW1533
 JW1533. The following values were computed from the NAD 83(2011) position.
 JW1533
 JW1533;                    North         East     Units Scale Factor Converg.
 JW1533;SPC MD       -   214,936.154   198,801.546   MT  1.00002525   -1 28 11.8
 JW1533;SPC MD       -   705,169.70    652,234.74   sFT  1.00002525   -1 28 11.8
 JW1533;UTM  17      - 4,382,413.896   642,392.146   MT  0.99984963   +1 03 23.6
 JW1533
 JW1533!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1533!SPC MD       -   0.99986488  x   1.00002525  =   0.99989013
 JW1533!UTM  17      -   0.99986488  x   0.99984963  =   0.99971454
 JW1533
 JW1533_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4239282413(NAD 83)
 JW1533
 JW1533|---------------------------------------------------------------------|
 JW1533| PID    Reference Object                     Distance      Geod. Az  |
 JW1533|                                                           dddmmss.s |
 JW1533| AE2161 2G4 B                               282.686 METERS 03924     |
 JW1533|---------------------------------------------------------------------|
 JW1533
 JW1533                          SUPERSEDED SURVEY CONTROL
 JW1533
 JW1533  NAD 83(2007)-  39 34 46.63811(N)    079 20 31.28728(W) AD(2002.00) 0
 JW1533  ELLIP H (02/10/07)  861.357  (m)                       GP(2002.00)    
 JW1533  ELLIP H (08/09/02)  861.381  (m)                       GP(       ) 4 2
 JW1533  NAD 83(1995)-  39 34 46.63832(N)    079 20 31.28703(W) AD(1995.00) B
 JW1533  ELLIP H (12/04/95)  861.387  (m)                       GP(1995.00) 4 1
 JW1533  NAD 83(1991)-  39 34 46.63995(N)    079 20 31.29409(W) AD(       ) 3
 JW1533  ELLIP H (01/27/92)  861.204  (m)                       GP(       ) 4 1
 JW1533  NAD 83(1986)-  39 34 46.64582(N)    079 20 31.29954(W) AD(       ) 3
 JW1533  NAD 27      -  39 34 46.35170(N)    079 20 32.16965(W) AD(       ) 3
 JW1533  NGVD 29 (03/22/89)  892.74   (m)  RAPSU86  model used  GPS OBS        
 JW1533
 JW1533.Superseded values are not recommended for survey control.
 JW1533
 JW1533.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1533.See file dsdata.pdf to determine how the superseded data were derived.
 JW1533
 JW1533_MARKER: DH = HORIZONTAL CONTROL DISK
 JW1533_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1533_STAMPING: GARRETT AP 1985
 JW1533_MARK LOGO: NGS
 JW1533_MAGNETIC: N = NO MAGNETIC MATERIAL
 JW1533_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1533+STABILITY: SURFACE MOTION
 JW1533_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1533+SATELLITE: SATELLITE OBSERVATIONS - July 23, 1996
 JW1533
 JW1533  HISTORY     - Date     Condition        Report By
 JW1533  HISTORY     - 1985     MONUMENTED       NGS
 JW1533  HISTORY     - 19950607 GOOD             NGS
 JW1533  HISTORY     - 19950811 GOOD             NGS
 JW1533  HISTORY     - 19960723 GOOD             NGS
 JW1533
 JW1533                          STATION DESCRIPTION
 JW1533
 JW1533'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (AJL)
 JW1533'THE STATION IS LOCATED ABOUT 5.6 KM (3.5 MI) SOUTH OF ACCIDENT, 3.5 KM
 JW1533'(2.2 MI) NORTH OF MCHENRY, AT THE GARRETT COUNTY AIRPORT, ON THE SOUTH
 JW1533'SIDE OF THE SINGLE RUNWAY.  OWNERSHIP--GARRETT COUNTY, GARRETT COUNTY
 JW1533'COMMISSIONERS, C/O COUNTY CLERK ROBERT FOUSKE, GARRETT COUNTY
 JW1533'COURTHOUSE, OAKLAND, MD 21550.  PHONE (301) 334-3917.
 JW1533'
 JW1533'TO REACH THE STATION FROM THE NORTH END OF THE BRIDGE OVER DEEP CREEK
 JW1533'LAKE AT MCHENRY, GO NORTH FOR 3.5 KM (2.2 MI) ON US HIGHWAY 219 TO A
 JW1533'CROSSROAD.  TURN RIGHT AND GO EAST FOR 0.5 KM (0.35 MI) ON MOSSER
 JW1533'ROAD, FOLLOWING THE MAIN TRAVELED WINDING ROAD TO A FORK.  BEAR LEFT,
 JW1533'EAST, FOR 0.5 KM (0.3 MI) ON BUMBLE BEE ROAD TO THE GARRETT COUNTY
 JW1533'COMMUNITY COLLEGE ON THE RIGHT.  CONTINUE STRAIGHT AHEAD AND GO EAST
 JW1533'FOR 2.9 KM (1.8 MI) ON BUMBLE BEE ROAD TO A SIDE ROAD ON THE LEFT.
 JW1533'TURN LEFT AND GO NORTHWEST FOR 1.0 KM (0.6 MI) ON AIRPORT ROAD TO THE
 JW1533'AIRPORT ADMINISTRATION BUILDING ON THE LEFT.  CONTINUE STRAIGHT AHEAD
 JW1533'AND GO WEST FOR 0.2 KM (0.15 MI) ON THE TARMAC AND RAMP TO THE EAST
 JW1533'END OF THE RUNWAY.  CROSS THE RUNWAY , THEN TURN RIGHT, WEST, FOR 0.5
 JW1533'KM (0.3 MI) ALONG THE SOUTH SIDE OF THE RUNWAY TO THE FOURTH RUNWAY
 JW1533'LIGHT FROM THE WEST END OF THE RUNWAY AND THE STATION ON THE LEFT.
 JW1533'
 JW1533'THE STATION IS A STANDARD NGS DISK STAMPED ---GARRETT AP 1985---, SET
 JW1533'INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM IN DIAMETER PROJECTING
 JW1533'2 CM ABOVE GROUND.  LOCATED 29.3 METERS (96.0 FT) SOUTH FROM THE
 JW1533'CENTER OF THE RUNWAY, 16.8 METERS (55.0 FT) SOUTH-SOUTHEAST FROM THE
 JW1533'FOURTH WHITE RUNWAY LIGHT FROM THE WEST END OF THE RUNWAY, 7.9 METERS
 JW1533'(26.0 FT) NORTH FROM THE EDGE OF A STEEP BANK, AND 0.6 METERS (2.0 FT)
 JW1533'NORTH FROM A FIBERGLASS WITNESS POST.  THE UNDERGROUND MARK IS A
 JW1533'STANDARD NGS DISK STAMPED ---GARRETT AP 1985---, SET INTO AN IRREGULAR
 JW1533'MASS OF CONCRETE 1.14 METERS BELOW THE SURFACE.
 JW1533'
 JW1533'DESCRIBED BY C. L. SMITH, TYPED BY C. L. SMITH.
 JW1533
 JW1533                          STATION RECOVERY (1995)
 JW1533
 JW1533'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (DMM)
 JW1533'RECOVERED AS DESCRIBED BY CLS IN 1987 WITH THE FOLLOWING CORRECTIONS
 JW1533'OR ADDITIONS.
 JW1533'
 JW1533'STATION IS LOCATED NEAR THE WEST END OF THE AIRPORT.  IT IS ABOUT 0.2
 JW1533'MI (0.3 KM) EAST OF THE WEST END OF THE RUNWAY AND 0.2 MI (0.3 KM)
 JW1533'WEST OF THE WIND-TEE LOCATED MIDFIELD ON THE SOUTH SIDE OF THE
 JW1533'RUNWAY.
 JW1533'
 JW1533'IT IS 55.0 FT (16.8 M) SOUTH-SOUTHWEST OF THE FOURTH RUNWAY LIGHT WEST
 JW1533'OF THE WEST OF THE RUNWAY.
 JW1533'
 JW1533'THE FIXED BASE OPERATOR SHOULD BE CONTACTED PRIOR TO ACCESSING THE
 JW1533'FIELD THE OFFICE IS LOCATED AT THE END OF THE AIRPORT ACCESS ROAD JUST
 JW1533'PRIOR TO ENTERING THE AIRCRAFT PARKING RAMP..
 JW1533
 JW1533                          STATION RECOVERY (1995)
 JW1533
 JW1533'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (CFS)
 JW1533'THE STATION IS LOCATED ABOUT 5.6 KM (3.45 MI) SOUTH OF ACCIDENT, 3.5
 JW1533'KM (2.15 MI) NORTH OF MCHENRY, AT THE GARRETT COUNTY AIRPORT, NEAR THE
 JW1533'WEST END OF THE AIRPORT, 0.2 MI (0.3 KM) EAST OF THE WEST END OF THE
 JW1533'RUNWAY AND 0.2 MI (0.3 KM) WEST OF THE WIND-TEE LOCATED MIDFIELD ON
 JW1533'THE SOUTH SIDE OF THE SINGLE RUNWAY.  OWNERSHIP--GARRETT COUNTY,
 JW1533'GARRETT COUNTY COMMISSIONERS, C/O GARY MULLICK, GARRETT COUNTY GENERAL
 JW1533'SERVICES DEPARTMENT, 313 EAST ALDER STREET, OAKLAND MD 21550, PHONE
 JW1533'301-334-1928 (OFFICE), 301-387-5468 (HOME).  THE FIXED BASE OPERATOR
 JW1533'SHOULD BE CONTACTED PRIOR TO ACCESSING THE FIELD.  FIXED BASE
 JW1533'OPERATOR, PLANE AVIATION, PO BOX 305, MCHENRY MD 21541, BRENDA DOLAN,
 JW1533'PHONE 301-387-4100.  THE OFFICE IS LOCATED AT THE END OF THE AIRPORT
 JW1533'ACCESS ROAD JUST PRIOR TO ENTERING THE AIRCRAFT PARKING RAMP.  TO
 JW1533'REACH THE STATION FROM THE NORTH END OF THE BRIDGE OVER DEEP CREEK
 JW1533'LAKE AT MCHENRY, GO NORTH FOR 3.5 KM (2.15 MI) ON US HIGHWAY 219 TO A
 JW1533'CROSSROAD.  TURN RIGHT AND GO EAST FOR 0.5 KM (0.30 MI) ON MOSSER
 JW1533'ROAD, FOLLOWING THE MAIN TRAVELED WINDING ROAD TO A FORK.  BEAR LEFT,
 JW1533'EAST, FOR 0.5 KM (0.30 MI) ON BUMBLE BEE ROAD TO THE GARRETT COUNTY
 JW1533'COMMUNITY COLLEGE ON THE RIGHT.  CONTINUE STRAIGHT AHEAD AND GO EAST
 JW1533'FOR 2.9 KM (1.80 MI) ON BUMBLE BEE ROAD TO A SIDE ROAD ON THE LEFT.
 JW1533'TURN LEFT AND GO NORTHWEST FOR 1.0 KM (0.60 MI) ON AIRPORT ROAD TO THE
 JW1533'AIRPORT ADMINISTRATION BUILDING ON THE LEFT. CONTINUE STRAIGHT AHEAD
 JW1533'AND GO WEST FOR 0.2 KM (0.10 MI) ON THE TARMAC AND RAMP TO THE EAST
 JW1533'END OF THE RUNWAY.  CROSS THE RUNWAY, THEN TURN RIGHT, WEST FOR 0.5 KM
 JW1533'(0.30 MI) ALONG THE SOUTH SIDE OF THE RUNWAY TO THE FOURTH RUNWAY
 JW1533'LIGHT FROM THE WEST END OF THE RUNWAY AND THE STATION ON THE LEFT.
 JW1533'THE STATION IS FLUSH WITH GROUND. LOCATED 29.3 METERS (96.1 FT) SOUTH
 JW1533'FROM THE CENTER OF THE RUNWAY, 15.4 METERS (50.5 FT) SOUTH-SOUTHWEST
 JW1533'FROM THE FOURTH WHITE RUNWAY LIGHT FROM THE WEST END OF THE RUNWAY
 JW1533'(RUNWAY LIGHT NUMBER R28), 7.9 METERS (25.9 FT) NORTH FROM THE EDGE OF
 JW1533'A STEEP BANK AND 0.6 METERS (2.0 FT) NORTH FROM A FIBERGLASS WITNESS
 JW1533'POST.  NOTE--THIS STATION WAS USED AS AN AREA NAVIGATION APPROACH
 JW1533'PRIMARY AIRPORT CONTROL STATION.
 JW1533
 JW1533                          STATION RECOVERY (1996)
 JW1533
 JW1533'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 JW1533'THE STATION IS LOCATED ABOUT 5.6 KM (3.45 MI) SOUTH OF ACCIDENT, 3.5
 JW1533'KM (2.15 MI) NORTH OF MCHENRY, AT THE GARRETT COUNTY AIRPORT, NEAR THE
 JW1533'WEST END OF THE AIRPORT, 0.2 MI (0.3 KM) EAST OF THE WEST END OF THE
 JW1533'RUNWAY AND 0.2 MI (0.3 KM) WEST OF THE WIND-TEE LOCATED MIDFIELD ON
 JW1533'THE SOUTH SIDE OF THE SINGLE RUNWAY.  OWNERSHIP--GARRETT COUNTY,
 JW1533'GARRETT COUNTY COMMISSIONERS, C/O GARY MULLICK, GARRETT COUNTY GENERAL
 JW1533'SERVICES DEPARTMENT, 313 EAST ALDER STREET, OAKLAND MD 21550, PHONE
 JW1533'301-334-1928 (OFFICE) , 301-387-5468 (HOME) .  THE FIXED BASE OPERATOR
 JW1533'SHOULD BE CONTACTED PRIOR TO ACCESSING THE FIELD.  FIXED BASE
 JW1533'OPERATOR, PLANE AVIATION, PO BOX 305, MCHENRY MD 21541, BRENDA DOLAN,
 JW1533'PHONE 301-387-4100.  THE OFFICE IS LOCATED AT THE END OF THE AIRPORT
 JW1533'ACCESS ROAD JUST PRIOR TO ENTERING THE AIRCRAFT PARKING RAMP.  TO
 JW1533'REACH THE STATION FROM THE NORTH END OF THE BRIDGE OVER DEEP CREEK
 JW1533'LAKE AT MCHENRY, GO NORTH FOR 3.5 KM (2.15 MI) ON US HIGHWAY 219 TO A
 JW1533'CROSSROAD.  TURN RIGHT AND GO EAST FOR 0.5 KM (0.30 MI) ON MOSSER
 JW1533'ROAD, FOLLOWING THE MAIN TRAVELED WINDING ROAD TO A FORK.  BEAR LEFT,
 JW1533'EAST, FOR 0.5 KM (0.30 MI) ON BUMBLE BEE ROAD TO THE GARRETT COUNTY
 JW1533'COMMUNITY COLLEGE ON THE RIGHT.  CONTINUE STRAIGHT AHEAD AND GO EAST
 JW1533'FOR 2.9 KM (1.80 MI) ON BUMBLE BEE ROAD TO A SIDE ROAD ON THE LEFT.
 JW1533'TURN LEFT AND GO NORTHWEST FOR 1.0 KM (0.60 MI) ON AIRPORT ROAD TO THE
 JW1533'AIRPORT ADMINISTRATION BUILDING ON THE LEFT. CONTINUE STRAIGHT AHEAD
 JW1533'AND GO WEST FOR 0.2 KM (0.10 MI) ON THE TARMAC AND RAMP TO THE EAST
 JW1533'END OF THE RUNWAY.  CROSS THE RUNWAY, THEN TURN RIGHT, WEST FOR 0.5 KM
 JW1533'(0.30 MI) ALONG THE SOUTH SIDE OF THE RUNWAY TO THE FOURTH RUNWAY
 JW1533'LIGHT FROM THE WEST END OF THE RUNWAY AND THE STATION ON THE LEFT.
 JW1533'THE STATION IS FLUSH WITH GROUND. LOCATED 29.3 METERS (96.1 FT) SOUTH
 JW1533'FROM THE CENTER OF THE RUNWAY, 15.4 METERS (50.5 FT) SOUTH-SOUTHWEST
 JW1533'FROM THE FOURTH WHITE RUNWAY LIGHT FROM THE WEST END OF THE RUNWAY
 JW1533'(RUNWAY LIGHT NUMBER R28) , 7.9 METERS (25.9 FT) NORTH FROM THE EDGE
 JW1533'OF A STEEP BANK AND 0.6 METERS (2.0 FT) NORTH FROM A FIBERGLASS
 JW1533'WITNESS POST.  NOTE--THIS STATION WAS USED AS AN AREA NAVIGATION
 JW1533'APPROACH PRIMARY AIRPORT CONTROL STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1536 ***********************************************************************
 JW1536  SACS        -  This is a Secondary Airport Control Station.
 JW1536  DESIGNATION -  GARRETT AZ MK
 JW1536  PID         -  JW1536
 JW1536  STATE/COUNTY-  MD/GARRETT
 JW1536  COUNTRY     -  US
 JW1536  USGS QUAD   -  MCHENRY (2016)
 JW1536
 JW1536                         *CURRENT SURVEY CONTROL
 JW1536  ______________________________________________________________________
 JW1536* NAD 83(2011) POSITION- 39 33 39.60817(N) 079 20 36.49228(W)   ADJUSTED
 JW1536* NAD 83(2011) ELLIP HT-   760.778 (meters)        (06/27/12)   ADJUSTED
 JW1536* NAD 83(2011) EPOCH   -  2010.00
 JW1536* NAVD 88 ORTHO HEIGHT -   792.08  (meters)     2598.7   (feet) GPS OBS
 JW1536  ______________________________________________________________________
 JW1536  NAVD 88 orthometric height was determined with geoid model    GEOID96
 JW1536  GEOID HEIGHT    -        -31.316 (meters)                     GEOID96
 JW1536  GEOID HEIGHT    -        -31.272 (meters)                     GEOID18
 JW1536  NAD 83(2011) X  -    910,640.344 (meters)                     COMP
 JW1536  NAD 83(2011) Y  - -4,839,550.920 (meters)                     COMP
 JW1536  NAD 83(2011) Z  -  4,041,011.835 (meters)                     COMP
 JW1536  LAPLACE CORR    -         -0.60  (seconds)                    DEFLEC18
 JW1536
 JW1536  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1536  Standards:
 JW1536         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1536            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1536  -------------------------------------------------------------------
 JW1536  NETWORK    0.84   1.53           0.36   0.33   0.78     -0.00079670
 JW1536  -------------------------------------------------------------------
 JW1536  Click here for local accuracies and other accuracy information.
 JW1536
 JW1536.This mark is at Garrett County Airport (2G4)
 JW1536
 JW1536.The horizontal coordinates were established by GPS observations
 JW1536.and adjusted by the National Geodetic Survey in June 2012.
 JW1536
 JW1536.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1536.been affixed to the stable North American tectonic plate. See 
 JW1536.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1536
 JW1536.The horizontal coordinates are valid at the epoch date displayed above
 JW1536.which is a decimal equivalence of Year/Month/Day.
 JW1536
 JW1536.The orthometric height was determined by GPS observations and a
 JW1536.high-resolution geoid model.
 JW1536
 JW1536.GPS derived orthometric heights for airport stations designated as
 JW1536.PACS or SACS are published to 2 decimal places.  This maintains
 JW1536.centimeter relative accuracy between the PACS and SACS.  It does
 JW1536.not indicate centimeter accuracy relative to other marks which are
 JW1536.part of the published vertical control network.
 JW1536
 JW1536.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1536.GEOID18 height accuracy estimate available here.
 JW1536
 JW1536.Click photographs - Photos may exist for this station.
 JW1536
 JW1536.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1536
 JW1536.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1536
 JW1536.The ellipsoidal height was determined by GPS observations
 JW1536.and is referenced to NAD 83.
 JW1536
 JW1536. The following values were computed from the NAD 83(2011) position.
 JW1536
 JW1536;                    North         East     Units Scale Factor Converg.
 JW1536;SPC MD       -   212,872.731   198,624.273   MT  1.00002130   -1 28 15.0
 JW1536;SPC MD       -   698,399.95    651,653.14   sFT  1.00002130   -1 28 15.0
 JW1536;UTM  17      - 4,380,345.025   642,306.011   MT  0.99984933   +1 03 18.8
 JW1536
 JW1536!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1536!SPC MD       -   0.99988066  x   1.00002130  =   0.99990196
 JW1536!UTM  17      -   0.99988066  x   0.99984933  =   0.99973001
 JW1536
 JW1536_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4230680345(NAD 83)
 JW1536
 JW1536                          SUPERSEDED SURVEY CONTROL
 JW1536
 JW1536  NAD 83(2007)-  39 33 39.60830(N)    079 20 36.49315(W) AD(2002.00) 0
 JW1536  ELLIP H (02/10/07)  760.797  (m)                       GP(2002.00)    
 JW1536  NAD 83(1991)-  39 33 39.60853(N)    079 20 36.49298(W) AD(       ) A
 JW1536  ELLIP H (02/12/02)  760.800  (m)                       GP(       ) 4 1
 JW1536  NAD 83(1995)-  39 33 39.60836(N)    079 20 36.49354(W) AD(       ) 1
 JW1536  ELLIP H (08/25/97)  760.809  (m)                       GP(       ) 4 2
 JW1536  NAD 83(1991)-  39 33 39.61240(N)    079 20 36.50349(W) AD(       ) 3
 JW1536  ELLIP H (01/27/92)  760.745  (m)                       GP(       ) 4 1
 JW1536  NAD 83(1986)-  39 33 39.61190(N)    079 20 36.50366(W) AD(       ) 3
 JW1536  NAD 27      -  39 33 39.28677(N)    079 20 37.34774(W) AD(       ) 3
 JW1536  NGVD 29 (03/22/89)  792.35   (m)  RAPSU86  model used  GPS OBS        
 JW1536
 JW1536.Superseded values are not recommended for survey control.
 JW1536
 JW1536.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1536.See file dsdata.pdf to determine how the superseded data were derived.
 JW1536
 JW1536_MARKER: DZ = AZIMUTH MARK DISK
 JW1536_SETTING: 66 = SET IN ROCK OUTCROP
 JW1536_STAMPING: GARRETT AP 1985
 JW1536_MARK LOGO: NGS
 JW1536_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1536_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JW1536+STABILITY: POSITION/ELEVATION WELL
 JW1536_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1536+SATELLITE: SATELLITE OBSERVATIONS - March 27, 2000
 JW1536
 JW1536  HISTORY     - Date     Condition        Report By
 JW1536  HISTORY     - 1985     MONUMENTED       NGS
 JW1536  HISTORY     - 19950607 GOOD             NGS
 JW1536  HISTORY     - 19960723 GOOD             NGS
 JW1536  HISTORY     - 20000327 GOOD             MDSHA
 JW1536
 JW1536                          STATION DESCRIPTION
 JW1536
 JW1536'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (AJL)
 JW1536'THE STATION IS LOCATED ABOUT 1.6 KM (1.0 MI) NORTH OF MCHENRY, AT THE
 JW1536'GARRETT COUNTY COMMUNITY COLLEGE.  OWNERSHIP--GARRETT COUNTY, C/O
 JW1536'GARRETT COUNTY COMMISSIONERS, GARRETT COUNTY COURTHOUSE, OAKLAND, MD
 JW1536'21550.  PHONE (301) 334-3917.
 JW1536'
 JW1536'TO REACH THE STATION FROM THE NORTH END OF THE BRIDGE OVER DEEP CREEK
 JW1536'LAKE AT MCHENRY, GO NORTH FOR 3.5 KM (2.2 MI) ON US HIGHWAY 219 TO A
 JW1536'CROSSROAD.  TURN RIGHT AND GO EAST FOR 0.5 KM (0.35 MI) ON MOSSER
 JW1536'ROAD, FOLLOWING THE MAIN TRAVELED WINDING ROAD TO A FORK.  BEAR LEFT,
 JW1536'EAST, FOR 0.5 KM (0.3 MI) ON BUMBLE BEE ROAD TO THE WEST ENTRANCE TO
 JW1536'THE PARKING LOT FOR THE GARRETT COUNTY COMMUNITY COLLEGE.  TURN RIGHT
 JW1536'AND GO SOUTH FOR 60 METERS (200 FT) ON THE PAVED DRIVE INTO THE
 JW1536'PARKING LOT TO THE STATION STRAIGHT AHEAD IN THE WEST CORNER OF THE
 JW1536'LAWN BETWEEN THE PARKING LOT AND THE NORTH FACE OF THE TECHNICAL
 JW1536'BUILDING.
 JW1536'
 JW1536'THE STATION IS A STANDARD NGS DISK STAMPED ---GARRETT AP 1985---, SET
 JW1536'INTO A DRILL HOLE IN A GRASS COVERED EXPOSURE OF BEDROCK 10 CM BELOW
 JW1536'GROUND.  LOCATED 61.9 METERS (203.0 FT) SOUTH FROM THE CENTER OF
 JW1536'BUMBLE BEE ROAD, 23.4 METERS (76.8 FT) WEST-SOUTHWEST FROM THE MOST
 JW1536'WESTERLY LIGHT POLE ALONG THE SOUTH EDGE OF THE PARKING LOT, 21.3
 JW1536'METERS (69.9 FT) WEST-NORTHWEST FROM A LIGHT POLE AT THE ENTRANCE TO A
 JW1536'BUILDING, 16.2 METERS (53.2 FT) NORTHWEST FROM THE NORTHEAST CORNER OF
 JW1536'THE BUILDING, 13.1 METERS (43.0 FT) NORTHEAST FROM THE NORTHEAST
 JW1536'CORNER OF A PROJECTION IN THE BUILDING, 4.2 METERS (13.8 FT) NORTHEAST
 JW1536'FROM THE NORTHWEST CORNER OF THE SIDEWALK WHERE IT MEETS THE ASPHALT
 JW1536'DRIVE TO A LARGE METAL DOOR, 2.6 METERS (8.5 FT) NORTH FROM THE NORTH
 JW1536'EDGE OF THE SIDEWALK, AND 2.2 METERS (7.2 FT) SOUTH FROM THE SOUTH
 JW1536'EDGE OF THE ASPHALT PARKING LOT.
 JW1536'
 JW1536'DESCRIBED BY C. L. SMITH, TYPED BY C. L. SMITH.
 JW1536
 JW1536                          STATION RECOVERY (1995)
 JW1536
 JW1536'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (DMM)
 JW1536'RECOVERED AS DESCRIBED BY CLS IN 1987.
 JW1536
 JW1536                          STATION RECOVERY (1996)
 JW1536
 JW1536'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 JW1536'RECOVERED AS DESCRIBED BY CLS IN 1987.
 JW1536
 JW1536                          STATION RECOVERY (2000)
 JW1536
 JW1536'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JW1536'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED EXCEPT IT IS
 JW1536'NOW 94.2 FEET (28.7 M) WEST-SOUTHWEST OF THE WESTERLY MOST LIGHT POLE
 JW1536'ALONG THE SOUTH EDGE OF THE PARKING LOT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0147 ***********************************************************************
 JV0147  DESIGNATION -  GARRETT RM 1
 JV0147  PID         -  JV0147
 JV0147  STATE/COUNTY-  MD/HARFORD
 JV0147  COUNTRY     -  US
 JV0147  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0147
 JV0147                         *CURRENT SURVEY CONTROL
 JV0147  ______________________________________________________________________
 JV0147* NAD 83(1986) POSITION- 39 34 20.76   (N) 076 06 52.30   (W)   HD_HELD1
 JV0147* NAVD 88 ORTHO HEIGHT -    99.466 (meters)      326.33  (feet) ADJUSTED
 JV0147  ______________________________________________________________________
 JV0147  GEOID HEIGHT    -        -33.062 (meters)                     GEOID18
 JV0147  DYNAMIC HEIGHT  -         99.417 (meters)      326.17  (feet) COMP
 JV0147  MODELED GRAVITY -    980,130.8   (mgal)                       NAVD 88
 JV0147
 JV0147  VERT ORDER      -  SECOND    CLASS 0
 JV0147
 JV0147.The horizontal coordinates were determined by differentially corrected
 JV0147.hand held GPS observations or other comparable positioning techniques
 JV0147.and have an estimated accuracy of +/- 3 meters.
 JV0147
 JV0147.The orthometric height was determined by differential leveling and
 JV0147.adjusted by the NATIONAL GEODETIC SURVEY
 JV0147.in June 1991.
 JV0147
 JV0147.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0147.GEOID18 height accuracy estimate available here.
 JV0147
 JV0147.Click photographs - Photos may exist for this station.
 JV0147
 JV0147.The dynamic height is computed by dividing the NAVD 88
 JV0147.geopotential number by the normal gravity value computed on the
 JV0147.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0147.degrees latitude (g = 980.6199 gals.).
 JV0147
 JV0147.The modeled gravity was interpolated from observed gravity values.
 JV0147
 JV0147;                    North         East    Units  Estimated Accuracy
 JV0147;SPC MD       -   211,926.0     476,084.0     MT  (+/- 3 meters HH1 GPS) 
 JV0147
 JV0147_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0427280896(NAD 83)
 JV0147
 JV0147                          SUPERSEDED SURVEY CONTROL
 JV0147
 JV0147  NGVD 29 (11/26/84)   99.737  (m)          327.22   (f) ADJUSTED    2 0
 JV0147
 JV0147.Superseded values are not recommended for survey control.
 JV0147
 JV0147.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0147.See file dsdata.pdf to determine how the superseded data were derived.
 JV0147
 JV0147_MARKER: DR = REFERENCE MARK DISK
 JV0147_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0147_STAMPING: GARRETT NO 1 1958
 JV0147_MARK LOGO: CGS
 JV0147_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0147+STABILITY: SURFACE MOTION
 JV0147
 JV0147  HISTORY     - Date     Condition        Report By
 JV0147  HISTORY     - 1958     MONUMENTED       CGS
 JV0147  HISTORY     - 1959     GOOD             CGS
 JV0147
 JV0147                          STATION DESCRIPTION
 JV0147
 JV0147'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0147'2.4 MI NW FROM HAVRE DE GRACE.
 JV0147'ABOUT 1.4 MILES NORTHWEST ALONG STATE HIGHWAY 155 FROM ITS
 JV0147'INTERSECTION WITH U.S. HIGHWAY 40 AT HAVRE DE GRACE, THENCE
 JV0147'0.6 MILE NORTH ALONG A GRAVEL ROAD TO A FARM HOUSE ON RIGHT,
 JV0147'THENCE 0.4 MILE NORTHEAST ALONG A DIM WOODS ROAD, 28.5 FEET
 JV0147'SOUTHWEST OF THE STATION, 32 FEET WEST OF THE WEST EDGE OF AN
 JV0147'OPEN FIELD, 9 FEET SOUTHWEST OF A BLAZED TREE, SET IN THE TOP
 JV0147'OF A CONCRETE POST PROJECTING 4 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0148 ***********************************************************************
 JV0148  DESIGNATION -  GARRETT RM 2
 JV0148  PID         -  JV0148
 JV0148  STATE/COUNTY-  MD/HARFORD
 JV0148  COUNTRY     -  US
 JV0148  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0148
 JV0148                         *CURRENT SURVEY CONTROL
 JV0148  ______________________________________________________________________
 JV0148* NAD 83(1986) POSITION- 39 34 21.18   (N) 076 06 51.97   (W)   HD_HELD1
 JV0148* NAVD 88 ORTHO HEIGHT -    99.021 (meters)      324.87  (feet) ADJUSTED
 JV0148  ______________________________________________________________________
 JV0148  GEOID HEIGHT    -        -33.062 (meters)                     GEOID18
 JV0148  DYNAMIC HEIGHT  -         98.972 (meters)      324.71  (feet) COMP
 JV0148  MODELED GRAVITY -    980,130.8   (mgal)                       NAVD 88
 JV0148
 JV0148  VERT ORDER      -  SECOND    CLASS 0
 JV0148
 JV0148.The horizontal coordinates were determined by differentially corrected
 JV0148.hand held GPS observations or other comparable positioning techniques
 JV0148.and have an estimated accuracy of +/- 3 meters.
 JV0148
 JV0148.The orthometric height was determined by differential leveling and
 JV0148.adjusted by the NATIONAL GEODETIC SURVEY
 JV0148.in June 1991.
 JV0148
 JV0148.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0148.GEOID18 height accuracy estimate available here.
 JV0148
 JV0148.Click photographs - Photos may exist for this station.
 JV0148
 JV0148.The dynamic height is computed by dividing the NAVD 88
 JV0148.geopotential number by the normal gravity value computed on the
 JV0148.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0148.degrees latitude (g = 980.6199 gals.).
 JV0148
 JV0148.The modeled gravity was interpolated from observed gravity values.
 JV0148
 JV0148;                    North         East    Units  Estimated Accuracy
 JV0148;SPC MD       -   211,939.0     476,091.7     MT  (+/- 3 meters HH1 GPS) 
 JV0148
 JV0148_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0428080909(NAD 83)
 JV0148
 JV0148                          SUPERSEDED SURVEY CONTROL
 JV0148
 JV0148  NGVD 29 (11/26/84)   99.292  (m)          325.76   (f) ADJUSTED    2 0
 JV0148
 JV0148.Superseded values are not recommended for survey control.
 JV0148
 JV0148.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0148.See file dsdata.pdf to determine how the superseded data were derived.
 JV0148
 JV0148_MARKER: DR = REFERENCE MARK DISK
 JV0148_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0148_STAMPING: GARRETT NO 2 1958
 JV0148_MARK LOGO: CGS
 JV0148_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0148+STABILITY: SURFACE MOTION
 JV0148
 JV0148  HISTORY     - Date     Condition        Report By
 JV0148  HISTORY     - 1958     MONUMENTED       CGS
 JV0148  HISTORY     - 1959     GOOD             CGS
 JV0148
 JV0148                          STATION DESCRIPTION
 JV0148
 JV0148'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0148'2.4 MI NW FROM HAVRE DE GRACE.
 JV0148'ABOUT 1.4 MILES NORTHWEST ALONG STATE HIGHWAY 155 FROM ITS
 JV0148'INTERSECTION WITH U.S. HIGHWAY 40 AT HAVRE DE GRACE, THENCE
 JV0148'0.6 MILE NORTH ALONG A GRAVEL ROAD, THENCE 0.4 MILE NORTHEAST
 JV0148'ALONG A DIM WOODS ROAD, 36.9 FEET NORTH OF THE STATION, SET
 JV0148'IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES ABOVE THE
 JV0148'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5585 ***********************************************************************
 JV5585  DESIGNATION -  GAS USE 1915
 JV5585  PID         -  JV5585
 JV5585  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5585  COUNTRY     -  US
 JV5585  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5585
 JV5585                         *CURRENT SURVEY CONTROL
 JV5585  ______________________________________________________________________
 JV5585* NAD 83(1991) POSITION- 39 15 53.80828(N) 076 37 11.19829(W)   ADJUSTED
 JV5585* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5585  ______________________________________________________________________
 JV5585  GEOID HEIGHT    -        -32.748 (meters)                     GEOID18
 JV5585  LAPLACE CORR    -         -5.45  (seconds)                    DEFLEC18
 JV5585  HORZ ORDER      -  THIRD
 JV5585
 JV5585.The horizontal coordinates were established by classical geodetic methods
 JV5585.and adjusted by the National Geodetic Survey in January 1992.
 JV5585
 JV5585.The orthometric height was scaled from a topographic map.
 JV5585
 JV5585.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5585.GEOID18 height accuracy estimate available here.
 JV5585
 JV5585.Click photographs - Photos may exist for this station.
 JV5585
 JV5585.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5585
 JV5585. The following values were computed from the NAD 83(1991) position.
 JV5585
 JV5585;                    North         East     Units Scale Factor Converg.
 JV5585;SPC MD       -   177,487.248   432,813.149   MT  0.99997286   +0 14 19.1
 JV5585;SPC MD       -   582,306.08  1,419,987.81   sFT  0.99997286   +0 14 19.1
 JV5585;UTM  18      - 4,347,429.003   360,261.488   MT  0.99984043   -1 01 31.2
 JV5585
 JV5585!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5585!SPC MD       -   1.00000470  x   0.99997286  =   0.99997756
 JV5585!UTM  18      -   1.00000470  x   0.99984043  =   0.99984513
 JV5585
 JV5585:                Primary Azimuth Mark                     Grid Az
 JV5585:SPC MD       -  DUGAN                                    173 02 20.1
 JV5585:UTM  18      -  DUGAN                                    174 18 10.4
 JV5585
 JV5585_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6026147429(NAD 83)
 JV5585
 JV5585|---------------------------------------------------------------------|
 JV5585| PID    Reference Object                     Distance      Geod. Az  |
 JV5585|                                                           dddmmss.s |
 JV5585| JV5587 DUGAN                               APPROX. 1.1 KM 1731639.2 |
 JV5585| JV5583 END                                  53.520 METERS 28319     |
 JV5585|---------------------------------------------------------------------|
 JV5585
 JV5585                          SUPERSEDED SURVEY CONTROL
 JV5585
 JV5585  NAD 83(1986)-  39 15 53.80478(N)    076 37 11.20721(W) AD(       ) 3
 JV5585  NAD 27      -  39 15 53.42100(N)    076 37 12.31900(W) AD(       ) 3
 JV5585  USSD        -  39 15 53.78500(N)    076 37 12.15700(W) AD(       ) 3
 JV5585
 JV5585.Superseded values are not recommended for survey control.
 JV5585
 JV5585.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5585.See file dsdata.pdf to determine how the superseded data were derived.
 JV5585
 JV5585_MARKER: DD = SURVEY DISK
 JV5585_SETTING: 0 = UNSPECIFIED SETTING
 JV5585_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5585
 JV5585  HISTORY     - Date     Condition        Report By
 JV5585  HISTORY     - 1915     MONUMENTED       USACE
 JV5585  HISTORY     - 1934     GOOD             CGS
 JV5585  HISTORY     - 1975     MARK NOT FOUND   NGS
 JV5585
 JV5585                          STATION DESCRIPTION
 JV5585
 JV5585'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1915 (EWE)
 JV5585'STATION IS ON THE NW SIDE OF MIDDLE BRANCH, PATAPSCO RIVER, AT
 JV5585'THE EASTERN END OF THE WESTERN MARYLAND RAILROAD BRIDGE, 10.82
 JV5585'FEET S OF THE SOUTHERNMOST RAIL, AND 42.05 FEET FROM SEMAPHORE
 JV5585'ON THE OTHER SIDE OF THE TRACK.  STATION MARKED BY A STANDARD
 JV5585'STATION MARK SET IN CONCRETE MONUMENT WITH TOP FLUSH WITH THE
 JV5585'GROUND.  HARBOR BOARD STATION DONALDSON, A 6- BY 6-INCH WHITE
 JV5585'MARBLE MONUMENT LOCATED BETWEEN THE TRACKS AND 8 FEET E OF END
 JV5585'OF BRIDGE, IS 25.274 METERS (82.92 FEET) FROM THE STATION
 JV5585'N 75 DEG 26 MIN W.
 JV5585
 JV5585                          STATION RECOVERY (1934)
 JV5585
 JV5585'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5585'STATION FOUND IN GOOD CONDITION.  DESCRIPTION INADEQUATE.  THE
 JV5585'STATION IS LOCATED ON THE RIGHT-OF-WAY OF THE WESTERN MARYLAND
 JV5585'RAILROAD ON THE EASTERN SIDE OF MIDDLE BRANCH OF PATAPSCO RIVER
 JV5585'APPROXIMATELY 95 FEET FROM THE HIGH-WATER LINE 10.8 FEET S OF
 JV5585'MOST SOUTHERLY RAIL AND 42.3 FEET SW OF A LONE SWITCH STAND
 JV5585'LOCATED ON THE NORTHERN SIDE OF THE RAILROAD RIGHT-OF-WAY.
 JV5585
 JV5585                          STATION RECOVERY (1975)
 JV5585
 JV5585'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JV5585'A SEARCH WAS MADE FOR THE STATION AND NO MARKS WERE FOUND.  IT
 JV5585'IS BELIEVED ALL MARKS WERE DESTROYED DURING CONSTRUCTION OF A
 JV5585'NEW RAILROAD BRIDGE.  A NEW STATION DAVE (USE) 1948 WAS FOUND
 JV5585'NEAR WHERE THE OLD STATION GAS (USE) 1915 WAS PREVIOUSLY
 JV5585'LOCATED.  NO NATIONAL GEODETIC SURVEY DATA COULD BE FOUND ON
 JV5585'THE NEW STATION.
 JV5585'
 JV5585'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5585'IN SOUTH PART OF BALTIMORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5848 ***********************************************************************
 HV5848  DESIGNATION -  GASH
 HV5848  PID         -  HV5848
 HV5848  STATE/COUNTY-  MD/TALBOT
 HV5848  COUNTRY     -  US
 HV5848  USGS QUAD   -  TRAPPE (2016)
 HV5848
 HV5848                         *CURRENT SURVEY CONTROL
 HV5848  ______________________________________________________________________
 HV5848* NAD 83(1991) POSITION- 38 44 52.69259(N) 076 07 00.23880(W)   ADJUSTED
 HV5848* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5848  ______________________________________________________________________
 HV5848  GEOID HEIGHT    -        -34.644 (meters)                     GEOID18
 HV5848  LAPLACE CORR    -         -3.55  (seconds)                    DEFLEC18
 HV5848  HORZ ORDER      -  THIRD
 HV5848
 HV5848.The horizontal coordinates were established by classical geodetic methods
 HV5848.and adjusted by the National Geodetic Survey in January 1992.
 HV5848
 HV5848.The orthometric height was scaled from a topographic map.
 HV5848
 HV5848.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5848.GEOID18 height accuracy estimate available here.
 HV5848
 HV5848.Click photographs - Photos may exist for this station.
 HV5848
 HV5848.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5848
 HV5848. The following values were computed from the NAD 83(1991) position.
 HV5848
 HV5848;                    North         East     Units Scale Factor Converg.
 HV5848;SPC MD       -   120,400.429   476,780.083   MT  0.99995232   +0 33 15.7
 HV5848;SPC MD       -   395,013.74  1,564,235.99   sFT  0.99995232   +0 33 15.7
 HV5848;UTM  18      - 4,289,401.131   402,956.674   MT  0.99971597   -0 41 56.4
 HV5848
 HV5848!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5848!SPC MD       -   1.00000532  x   0.99995232  =   0.99995764
 HV5848!UTM  18      -   1.00000532  x   0.99971597  =   0.99972128
 HV5848
 HV5848:                Primary Azimuth Mark                     Grid Az
 HV5848:SPC MD       -  CAMDEN                                   191 09 56.7
 HV5848:UTM  18      -  CAMDEN                                   192 25 08.8
 HV5848
 HV5848_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0295689401(NAD 83)
 HV5848
 HV5848|---------------------------------------------------------------------|
 HV5848| PID    Reference Object                     Distance      Geod. Az  |
 HV5848|                                                           dddmmss.s |
 HV5848| HV5641 MELON                               APPROX. 0.6 KM 0044831.1 |
 HV5848| HV5855 CAMDEN                              APPROX. 0.7 KM 1914312.4 |
 HV5848|---------------------------------------------------------------------|
 HV5848
 HV5848                          SUPERSEDED SURVEY CONTROL
 HV5848
 HV5848  NAD 83(1986)-  38 44 52.68844(N)    076 07 00.25508(W) AD(       ) 3
 HV5848  NAD 27      -  38 44 52.23400(N)    076 07 01.51000(W) AD(       ) 3
 HV5848  USSD        -  38 44 52.63900(N)    076 07 01.30500(W) AD(       ) 3
 HV5848
 HV5848.Superseded values are not recommended for survey control.
 HV5848
 HV5848.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5848.See file dsdata.pdf to determine how the superseded data were derived.
 HV5848
 HV5848_MARKER: H = DRILL HOLE
 HV5848_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5848_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5848
 HV5848  HISTORY     - Date     Condition        Report By
 HV5848  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5848  HISTORY     - 1940     GOOD             CGS
 HV5848  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5848
 HV5848                          STATION DESCRIPTION
 HV5848
 HV5848'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5848'ON THE EASTERN SHORE OF THE UPPER PART OF TRED AVON RIVER, ON
 HV5848'POINT OF LAND BETWEEN CAMDEN POINT AND WATERMELON POINT, ABOUT 3/4
 HV5848'MILE N OF ENTRANCE TO PEACHBLOSSOM CREEK, ABOUT 5 FEET ABOVE HIGH
 HV5848'WATER, 16 YARDS N OF SHORE, 25 YARDS ENE OF POINT OF SHORE, 18
 HV5848'YARDS ESE OF BANK, 10 YARDS W OF FIELD, AND NEAR SEVERAL LARGE
 HV5848'PINE TREES.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP
 HV5848'OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV5848'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV5848'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5848'TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN
 HV5848'TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV5848'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5848'ARE AS FOLLOWS--SPINDLE ON BARN CUPOLA, 5/8 MILE, S 3 DEG 27 MIN
 HV5848'W.  LEFT CORNER OF NEAR CHIMNEY OF HOUSE, 3/4 MILE, N 83 DEG 59
 HV5848'MIN W. NAIL IN BLAZE IN 24-INCH PINE TREE, 8.30 METERS (27.23
 HV5848'FEET), N 44 DEG 33 MIN W.  NAIL IN BLAZE IN 5-INCH LOCUST TREE,
 HV5848'11.93 METERS (39.1 FEET), N 35 DEG 27 MIN E.  NAIL IN BLAZE IN
 HV5848'12-INCH OAK TREE, 7.24 METERS (23.75 FEET), S 49 DEG 42 MIN E.
 HV5848'WEATHER VANE ON BARN CUPOLA, 3/8 MILE, S 29 DEG 39 MIN E.
 HV5848
 HV5848                          STATION RECOVERY (1940)
 HV5848
 HV5848'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5848'STATION MARK RECOVERED IN GOOD CONDITION, FLUSH WITH SURFACE OF
 HV5848'GROUND.  ALL ORIGINAL REFERENCE TREES INTACT EXCEPT A 5-INCH
 HV5848'LOCUST TREE.
 HV5848'
 HV5848'STATION IS ON THE EASTERN SHORE OF THE UPPER PART OF THE TRED AVON
 HV5848'RIVER, ON POINT OF LAND BETWEEN CAMDEN POINT AND WATERMELON POINT,
 HV5848'3/4 MILE N OF ENTRANCE TO PEACHBLOSSOM CREEK, 5 FEET ABOVE HIGH
 HV5848'WATER, 20.0 METERS N OF SHORE, 25.0 METERS E OF SHORE, 14.0
 HV5848'METERS SE OF BANK, AND 24.0 METERS ENE OF POINT OF SHORE.
 HV5848
 HV5848                          STATION RECOVERY (1961)
 HV5848
 HV5848'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5848'STATION NOT RECOVERED AFTER A SEARCH OF THE AREA BY A TWO MAN
 HV5848'PARTY.  THE BLAZED 5 INCH LOCUST TREE MENTIONED IN THE 1940
 HV5848'RECOVERY NOTE COULD NOT BE FOUND AND IS BELIEVED TO HAVE BEEN
 HV5848'DESTROYED.  THE PUBLISHED DESCRIPTION IS NOW INADEQUATE FOR
 HV5848'RECOVERY OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5222 ***********************************************************************
 JV5222  DESIGNATION -  GATE 2
 JV5222  PID         -  JV5222
 JV5222  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5222  COUNTRY     -  US
 JV5222  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5222
 JV5222                         *CURRENT SURVEY CONTROL
 JV5222  ______________________________________________________________________
 JV5222* NAD 83(1991) POSITION- 39 01 08.19879(N) 076 24 38.76353(W)   NO CHECK
 JV5222* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 JV5222  ______________________________________________________________________
 JV5222  GEOID HEIGHT    -        -33.405 (meters)                     GEOID18
 JV5222  LAPLACE CORR    -         -2.27  (seconds)                    DEFLEC18
 JV5222  HORZ ORDER      -  THIRD
 JV5222
 JV5222.The horizontal coordinates were established by classical geodetic methods
 JV5222.and adjusted by the National Geodetic Survey in January 1992.
 JV5222
 JV5222.No horizontal observational check was made to the station.
 JV5222
 JV5222.The orthometric height was scaled from a topographic map.
 JV5222
 JV5222.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5222.GEOID18 height accuracy estimate available here.
 JV5222
 JV5222.Click photographs - Photos may exist for this station.
 JV5222
 JV5222.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5222
 JV5222. The following values were computed from the NAD 83(1991) position.
 JV5222
 JV5222;                    North         East     Units Scale Factor Converg.
 JV5222;SPC MD       -   150,273.881   451,026.711   MT  0.99995296   +0 22 11.4
 JV5222;SPC MD       -   493,023.56  1,479,743.47   sFT  0.99995296   +0 22 11.4
 JV5222;UTM  18      - 4,319,825.565   377,869.151   MT  0.99978367   -0 53 17.9
 JV5222
 JV5222!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5222!SPC MD       -   1.00000449  x   0.99995296  =   0.99995745
 JV5222!UTM  18      -   1.00000449  x   0.99978367  =   0.99978816
 JV5222
 JV5222:                Primary Azimuth Mark                     Grid Az
 JV5222:SPC MD       -  SANDY POINT LIGHTHOUSE                   098 05 54.2
 JV5222:UTM  18      -  SANDY POINT LIGHTHOUSE                   099 21 23.5
 JV5222
 JV5222_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7786919825(NAD 83)
 JV5222
 JV5222|---------------------------------------------------------------------|
 JV5222| PID    Reference Object                     Distance      Geod. Az  |
 JV5222|                                                           dddmmss.s |
 JV5222| JV5241 SANDY POINT LIGHTHOUSE              APPROX. 2.3 KM 0982805.6 |
 JV5222| CA9448 GATE 2 RM 5                          12.569 METERS 25539     |
 JV5222| JV0528 GATE                                 66.356 METERS 29809     |
 JV5222| CA9447 GATE 2 RM 4                          10.926 METERS 34426     |
 JV5222|---------------------------------------------------------------------|
 JV5222
 JV5222                          SUPERSEDED SURVEY CONTROL
 JV5222
 JV5222  NAD 83(1986)-  39 01 08.19457(N)    076 24 38.77474(W) AD(       ) 3
 JV5222  NAD 27      -  39 01 07.80000(N)    076 24 39.90000(W) AD(       ) 3
 JV5222
 JV5222.Superseded values are not recommended for survey control.
 JV5222
 JV5222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5222.See file dsdata.pdf to determine how the superseded data were derived.
 JV5222
 JV5222_MARKER: DS = TRIANGULATION STATION DISK
 JV5222_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5222_STAMPING: GATE 2 1952
 JV5222_MARK LOGO: CGS
 JV5222_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5222+STABILITY: SURFACE MOTION
 JV5222
 JV5222  HISTORY     - Date     Condition        Report By
 JV5222  HISTORY     - 1952     MONUMENTED       CGS
 JV5222  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5222
 JV5222                          STATION DESCRIPTION
 JV5222
 JV5222'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (IWS)
 JV5222'THE STATION IS LOCATED ABOUT 1-1/2 MILES WEST OF THE WEST END OF
 JV5222'THE CHESAPEAKE BAY BRIDGE.  IT IS JUST EAST OF THE JUNCTION OF THE
 JV5222'SANDY POINT ROAD AND ROUTE 50 AND IN AN OPEN FIELD.  THE MARK IS
 JV5222'ABOUT 300 FEET NORTH OF ROUTE 50, 130 FEET EAST OF POLE NO. 84463,
 JV5222'110 FEET SOUTH OF THE CENTER LINE OF A DIRT ROAD, AND 75 FEET
 JV5222'NORTHWEST OF POLE NO. 205762.  THE MARK IS SET IN THE TOP OF A
 JV5222'CONCRETE POST WHICH PROJECTS 2 INCHES.  IT IS STAMPED GATE 2 1952.
 JV5222'
 JV5222'REFERENCE MARK NO. 4 IS 74 FEET SOUTH OF THE CENTER LINE OF A DIRT
 JV5222'ROAD.  IT IS SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 1
 JV5222'INCH.  IT IS STAMPED GATE 2 NO 4 1952.
 JV5222'
 JV5222'REFERENCE MARK NO. 5 IS 90 FEET EAST OF POLE 84463.  IT IS SET IN
 JV5222'THE TOP OF A CONCRETE POST WHICH PROJECTS 1 INCH.  IT IS STAMPED
 JV5222'GATE 2 NO 5 1952.
 JV5222'
 JV5222'THE AZIMUTH MARK IS THE SANDY POINT LIGHT HOUSE.
 JV5222'
 JV5222'TO REACH THE STATION FROM THE SEVERN RIVER BRIDGE ON ROUTE 50 JUST
 JV5222'NORTH OF ANNAPOLIS, GO NORTH FOR 1.6 MILES TO ROUTE 50 TO THE
 JV5222'EAST.  TURN RIGHT ON ROUTE 50 AND GO 4.7 MILES TO THE JUNCTION OF
 JV5222'THE SANDY POINT ROAD.  CONTINUE ON ROUTE 50 FOR 0.1 MILE TO THE
 JV5222'STATION SITE ON THE LEFT.
 JV5222
 JV5222                          STATION RECOVERY (1961)
 JV5222
 JV5222'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5222'STATION AND REFERENCE MARKS WERE SEARCHED FOR BUT NOT FOUND.  THE
 JV5222'FIELD IS NOW HEAVY BRUSH AND ALL POLES HAVE BEEN CHANGED.  THE
 JV5222'DIRT ROAD AS DESCRIBED IN BOOK 403, PAGE 40 NO LONGER EXISTS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3150 ***********************************************************************
 DI3150  DESIGNATION -  GATEWAY
 DI3150  PID         -  DI3150
 DI3150  STATE/COUNTY-  MD/TALBOT
 DI3150  COUNTRY     -  US
 DI3150  USGS QUAD   -  TRAPPE (2016)
 DI3150
 DI3150                         *CURRENT SURVEY CONTROL
 DI3150  ______________________________________________________________________
 DI3150* NAD 83(2011) POSITION- 38 39 04.04255(N) 076 03 26.37172(W)   ADJUSTED
 DI3150* NAD 83(2011) ELLIP HT-   -19.688 (meters)        (06/27/12)   ADJUSTED
 DI3150* NAD 83(2011) EPOCH   -  2010.00
 DI3150* NAVD 88 ORTHO HEIGHT -    15.2   (meters)       50.    (feet) GPS OBS
 DI3150  ______________________________________________________________________
 DI3150  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3150  GEOID HEIGHT    -        -34.894 (meters)                     GEOID03
 DI3150  GEOID HEIGHT    -        -34.919 (meters)                     GEOID18
 DI3150  NAD 83(2011) X  -  1,201,765.522 (meters)                     COMP
 DI3150  NAD 83(2011) Y  - -4,840,645.470 (meters)                     COMP
 DI3150  NAD 83(2011) Z  -  3,962,132.159 (meters)                     COMP
 DI3150  LAPLACE CORR    -         -3.36  (seconds)                    DEFLEC18
 DI3150
 DI3150  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3150  Standards:
 DI3150         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3150            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3150  -------------------------------------------------------------------
 DI3150  NETWORK    0.48   0.69           0.20   0.19   0.35      0.04930925
 DI3150  -------------------------------------------------------------------
 DI3150  Click here for local accuracies and other accuracy information.
 DI3150
 DI3150.The horizontal coordinates were established by GPS observations
 DI3150.and adjusted by the National Geodetic Survey in June 2012.
 DI3150
 DI3150.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3150.been affixed to the stable North American tectonic plate. See 
 DI3150.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3150
 DI3150.The horizontal coordinates are valid at the epoch date displayed above
 DI3150.which is a decimal equivalence of Year/Month/Day.
 DI3150
 DI3150.The orthometric height was determined by GPS observations and a
 DI3150.high-resolution geoid model.
 DI3150
 DI3150.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3150.GEOID18 height accuracy estimate available here.
 DI3150
 DI3150.Click photographs - Photos may exist for this station.
 DI3150
 DI3150.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3150
 DI3150.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3150
 DI3150.The ellipsoidal height was determined by GPS observations
 DI3150.and is referenced to NAD 83.
 DI3150
 DI3150. The following values were computed from the NAD 83(2011) position.
 DI3150
 DI3150;                    North         East     Units Scale Factor Converg.
 DI3150;SPC MD       -   109,702.148   482,055.056   MT  0.99995750   +0 35 30.0
 DI3150;SPC MD       -   359,914.46  1,581,542.30   sFT  0.99995750   +0 35 30.0
 DI3150;UTM  18      - 4,278,592.728   407,995.265   MT  0.99970424   -0 39 37.5
 DI3150
 DI3150!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3150!SPC MD       -   1.00000309  x   0.99995750  =   0.99996059
 DI3150!UTM  18      -   1.00000309  x   0.99970424  =   0.99970733
 DI3150
 DI3150_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0799578592(NAD 83)
 DI3150
 DI3150                          SUPERSEDED SURVEY CONTROL
 DI3150
 DI3150  NAD 83(1991)-  38 39 04.04252(N)    076 03 26.37248(W) AD(       ) 1
 DI3150  ELLIP H (01/05/07)  -19.646  (m)                       GP(       ) 4 2
 DI3150
 DI3150.Superseded values are not recommended for survey control.
 DI3150
 DI3150.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3150.See file dsdata.pdf to determine how the superseded data were derived.
 DI3150
 DI3150_MARKER: DD = SURVEY DISK
 DI3150_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3150_STAMPING: GATEWAY
 DI3150_PROJECTION: RECESSED 13 CENTIMETERS
 DI3150_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3150_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3150+STABILITY: SURFACE MOTION
 DI3150_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3150+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3150
 DI3150  HISTORY     - Date     Condition        Report By
 DI3150  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3150
 DI3150                          STATION DESCRIPTION
 DI3150
 DI3150'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3150'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR TRAPPE
 DI3150'LANDING, MARYLAND.  IT IS  ABOUT 8.7 MI (14.0 KM) SOUTH OF EASTON,
 DI3150'MARYLAND, ABOUT 6.1 MI (9.8 KM) NORTHEAST OF  CAMBRIDGE, MARYLAND AND
 DI3150'ABOUT 20.0 MI (32.2 KM) SOUTH OF WYE MILLS, MARYLAND.
 DI3150'
 DI3150'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 322
 DI3150'(EASTON BYPASS) PROCEED  SOUTHEAST ON US RTE 50 FOR 6.0 MI (9.6 KM) TO
 DI3150'THE STATION IN THE RIGHT.
 DI3150'
 DI3150'STATION IS 4.4 FT (1.3 M) WEST OF THE WEST EDGE OF US RTE 50
 DI3150'EASTBOUND,  15.0 FT (4.6 M) EAST  OF CULTIVATED FIELD AND 63.00 FT
 DI3150'(19.2 M) NORTHEAST OF UTILITY POLE CP 224.  3 IN BRASS DISK  STAMPED
 DI3150'GATEWAY SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT RECESSED
 DI3150'0.40 FT  BELOW THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4213 ***********************************************************************
 JV4213  DESIGNATION -  GAVER
 JV4213  PID         -  JV4213
 JV4213  STATE/COUNTY-  MD/FREDERICK
 JV4213  COUNTRY     -  US
 JV4213  USGS QUAD   -  DAMASCUS (2016)
 JV4213
 JV4213                         *CURRENT SURVEY CONTROL
 JV4213  ______________________________________________________________________
 JV4213* NAD 83(1991) POSITION- 39 22 22.22745(N) 077 13 00.53412(W)   ADJUSTED
 JV4213* NAVD 88 ORTHO HEIGHT -   195.    (meters)      640.    (feet) SCALED
 JV4213  ______________________________________________________________________
 JV4213  GEOID HEIGHT    -        -32.067 (meters)                     GEOID18
 JV4213  LAPLACE CORR    -          4.78  (seconds)                    DEFLEC18
 JV4213  HORZ ORDER      -  SECOND
 JV4213
 JV4213.The horizontal coordinates were established by classical geodetic methods
 JV4213.and adjusted by the National Geodetic Survey in January 1992.
 JV4213
 JV4213.The orthometric height was scaled from a topographic map.
 JV4213
 JV4213.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4213.GEOID18 height accuracy estimate available here.
 JV4213
 JV4213.Click photographs - Photos may exist for this station.
 JV4213
 JV4213.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4213
 JV4213. The following values were computed from the NAD 83(1991) position.
 JV4213
 JV4213;                    North         East     Units Scale Factor Converg.
 JV4213;SPC MD       -   189,419.444   381,317.315   MT  0.99998741   -0 08 09.9
 JV4213;SPC MD       -   621,453.63  1,251,038.56   sFT  0.99998741   -0 08 09.9
 JV4213;UTM  18      - 4,360,496.529   309,044.192   MT  1.00004898   -1 24 24.1
 JV4213
 JV4213!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4213!SPC MD       -   0.99997447  x   0.99998741  =   0.99996188
 JV4213!UTM  18      -   0.99997447  x   1.00004898  =   1.00002345
 JV4213
 JV4213:                Primary Azimuth Mark                     Grid Az
 JV4213:SPC MD       -  OVER                                     108 47 46.7
 JV4213:UTM  18      -  OVER                                     110 04 00.9
 JV4213
 JV4213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0904460496(NAD 83)
 JV4213
 JV4213|---------------------------------------------------------------------|
 JV4213| PID    Reference Object                     Distance      Geod. Az  |
 JV4213|                                                           dddmmss.s |
 JV4213| JV2418 OVER                                APPROX. 2.1 KM 1083936.8 |
 JV4213| JV2414 ISER                                424.025 METERS 2350637.6 |
 JV4213|---------------------------------------------------------------------|
 JV4213
 JV4213                          SUPERSEDED SURVEY CONTROL
 JV4213
 JV4213  NAD 83(1986)-  39 22 22.22741(N)    077 13 00.54357(W) AD(       ) 2
 JV4213  NAD 27      -  39 22 21.85600(N)    077 13 01.61040(W) AD(       ) 2
 JV4213
 JV4213.Superseded values are not recommended for survey control.
 JV4213
 JV4213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4213.See file dsdata.pdf to determine how the superseded data were derived.
 JV4213
 JV4213_MARKER: DE = TRAVERSE STATION DISK
 JV4213_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4213_STAMPING: GAVER 1958
 JV4213_MARK LOGO: CGS
 JV4213_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4213+STABILITY: SURFACE MOTION
 JV4213
 JV4213  HISTORY     - Date     Condition        Report By
 JV4213  HISTORY     - 1958     MONUMENTED       CGS
 JV4213
 JV4213                          STATION DESCRIPTION
 JV4213
 JV4213'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4213'NOTE--THIS IS AN UNOCCUPIED TRAVERSE STATION, THE AZIMUTH MARK FOR
 JV4213'TRAVERSE STATION OVER.
 JV4213'
 JV4213'STATION IS LOCATED ON THE SOUTH END OF A LONG SLOPING RIDGE, ABOUT
 JV4213'3.5 MILES WEST OF MOUNT AIRY, 3.0 MILES EAST SOUTHEAST OF NEW
 JV4213'MARKET, AND ABOUT 0.25 MILE NORTH OF U.S. HIGHWAY NO. 40.  5-1/2
 JV4213'FEET NORTHWEST OF A WILD CHERRY TREE WHERE FENCE CORNERS.
 JV4213'
 JV4213'TO REACH THE STATION FROM POINT WHERE U.S. HIGHWAY NO. 40 CROSSES
 JV4213'OVER STATE HIGHWAY NO. 27, SOUTH OF MOUNT AIRY, GO WESTERLY ON
 JV4213'U.S. HIGHWAY NO. 40 FOR 1.5 MILES TO WHERE HIGHWAY CROSSES OVER
 JV4213'RAILROAD, CONTINUE WESTERLY ON HIGHWAY FOR 0.95 MILE TO A
 JV4213'CROSSROAD (ROAD TO LEFT GOES UNDER RAILROAD), TURN RIGHT AND GO
 JV4213'NORTH FOR 0.05 MILE TO A CROSSROAD AND A STORE, TURN LEFT AND
 JV4213'GO WESTERLY ON PAVED ROAD (OLD U.S. HIGHWAY NO. 40) FOR 0.5 MILE
 JV4213'TO FIELD ROAD RIGHT, TURN RIGHT AND GO NORTHERLY UP HILL FOR
 JV4213'0.15 MILE TO A FORK, HERE TURN RIGHT AND EASTERLY FOR 0.05 MILE TO
 JV4213'FENCE CORNER AND STATION AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AH8296 ***********************************************************************
 AH8296  DESIGNATION -  GEAN
 AH8296  PID         -  AH8296
 AH8296  STATE/COUNTY-  MD/MONTGOMERY
 AH8296  COUNTRY     -  US
 AH8296  USGS QUAD   -  GAITHERSBURG (2016)
 AH8296
 AH8296                         *CURRENT SURVEY CONTROL
 AH8296  ______________________________________________________________________
 AH8296* NAD 83(1986) POSITION- 39 07 36.     (N) 077 13 10.     (W)   SCALED
 AH8296* NAVD 88 ORTHO HEIGHT -   129.731 (meters)      425.63  (feet) ADJUSTED
 AH8296  ______________________________________________________________________
 AH8296  GEOID HEIGHT    -        -31.739 (meters)                     GEOID18
 AH8296  DYNAMIC HEIGHT  -        129.663 (meters)      425.40  (feet) COMP
 AH8296  MODELED GRAVITY -    980,101.7   (mgal)                       NAVD 88
 AH8296
 AH8296  VERT ORDER      -  FIRST     CLASS II
 AH8296
 AH8296.The horizontal coordinates were scaled from a map and have
 AH8296.an estimated accuracy of +/- 6 seconds.
 AH8296
 AH8296.The orthometric height was determined by differential leveling and
 AH8296.adjusted by the NATIONAL GEODETIC SURVEY
 AH8296.in April 1999.
 AH8296
 AH8296.Significant digits in the geoid height do not necessarily reflect accuracy.
 AH8296.GEOID18 height accuracy estimate available here.
 AH8296
 AH8296.Click photographs - Photos may exist for this station.
 AH8296
 AH8296.The dynamic height is computed by dividing the NAVD 88
 AH8296.geopotential number by the normal gravity value computed on the
 AH8296.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AH8296.degrees latitude (g = 980.6199 gals.).
 AH8296
 AH8296.The modeled gravity was interpolated from observed gravity values.
 AH8296
 AH8296;                    North         East    Units  Estimated Accuracy
 AH8296;SPC MD       -   162,090.      381,030.      MT  (+/- 180 meters Scaled)
 AH8296
 AH8296_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ081331(NAD 83)
 AH8296
 AH8296                          SUPERSEDED SURVEY CONTROL
 AH8296
 AH8296.No superseded survey control is available for this station.
 AH8296
 AH8296_MARKER: DD = SURVEY DISK
 AH8296_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 AH8296_SP_SET: ROOF
 AH8296_STAMPING: GEAN 1998
 AH8296_MARK LOGO: NONE
 AH8296_PROJECTION: FLUSH
 AH8296_MAGNETIC: N = NO MAGNETIC MATERIAL
 AH8296_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AH8296
 AH8296  HISTORY     - Date     Condition        Report By
 AH8296  HISTORY     - 1998     MONUMENTED       NGS
 AH8296
 AH8296                          STATION DESCRIPTION
 AH8296
 AH8296'DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 AH8296'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
 AH8296'GROUNDS, ABOUT 0.30 MILE (0.48 KM) SOUTH ALONG CENTER DRIVE FROM THE
 AH8296'JUNCTION OF SOUTH DRIVE, AT THE NORTH DRIVE TO BUILDING 235, CONTINUE
 AH8296'0.2 KM (0.10 MI) WEST ALONG PAVED ROAD AROUND BUILDING 235 TO THE
 AH8296'DELIVERY DOOR AT A HUGE CONCRETE ROOF FOR A UNDERGROUND BUILDING.  ON
 AH8296'THE WEST SIDE OF BUILDING NO.  235, IN THE NORTHWEST CORNER OF A 46.8
 AH8296'X 36.9 FOOT (11.2 M) CONCRETE ROOF SUPPORT 20 FEET (6.1 M) DOWN ON
 AH8296'ROCK OUTCROP BASE PROJECTING 1.0 FOOT, (0.3 M) 23.9 FEET (7.3 M) EAST
 AH8296'OF A FIRE HYDRANT, 28.0 FEET (8.5 M) EAST OF EAST CURB, 26.3 FEET (8.0
 AH8296'M) SOUTHEAST OF NORTHWEST CORNER POST OF A 8 FOOT (2.4 M) HIGH
 AH8296'CHAINLINK FENCE, 1 FOOT (0.3 M) 11 IN SOUTHEAST OF NORTHWEST CORNER OF
 AH8296'RETAINING WALL, 28.7 FEET (8.7 M) SOUTH SOUTHWEST OF CHAIN LINK FENCE.
 AH8296'CONTACT--DR MICHAEL ROWE--301-975-6210.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4261 ***********************************************************************
 JU4261  DESIGNATION -  GEESE
 JU4261  PID         -  JU4261
 JU4261  STATE/COUNTY-  MD/CECIL
 JU4261  COUNTRY     -  US
 JU4261  USGS QUAD   -  NEWARK WEST (2016)
 JU4261
 JU4261                         *CURRENT SURVEY CONTROL
 JU4261  ______________________________________________________________________
 JU4261* NAD 83(2011) POSITION- 39 38 40.33953(N) 075 51 10.43507(W)   ADJUSTED
 JU4261* NAD 83(2011) ELLIP HT-    14.379 (meters)        (06/27/12)   ADJUSTED
 JU4261* NAD 83(2011) EPOCH   -  2010.00
 JU4261* NAVD 88 ORTHO HEIGHT -    47.477 (meters)      155.76  (feet) ADJUSTED
 JU4261  ______________________________________________________________________
 JU4261  GEOID HEIGHT    -        -33.095 (meters)                     GEOID18
 JU4261  NAD 83(2011) X  -  1,202,017.864 (meters)                     COMP
 JU4261  NAD 83(2011) Y  - -4,768,838.036 (meters)                     COMP
 JU4261  NAD 83(2011) Z  -  4,047,682.545 (meters)                     COMP
 JU4261  LAPLACE CORR    -          0.63  (seconds)                    DEFLEC18
 JU4261  DYNAMIC HEIGHT  -         47.454 (meters)      155.69  (feet) COMP
 JU4261  MODELED GRAVITY -    980,140.4   (mgal)                       NAVD 88
 JU4261
 JU4261  VERT ORDER      -  SECOND    CLASS I
 JU4261
 JU4261  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4261  Standards:
 JU4261         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4261            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4261  -------------------------------------------------------------------
 JU4261  NETWORK    1.98   3.90           0.81   0.79   1.99      0.31448630
 JU4261  -------------------------------------------------------------------
 JU4261  Click here for local accuracies and other accuracy information.
 JU4261
 JU4261.The horizontal coordinates were established by GPS observations
 JU4261.and adjusted by the National Geodetic Survey in June 2012.
 JU4261
 JU4261.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4261.been affixed to the stable North American tectonic plate. See 
 JU4261.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4261
 JU4261.The horizontal coordinates are valid at the epoch date displayed above
 JU4261.which is a decimal equivalence of Year/Month/Day.
 JU4261
 JU4261.The orthometric height was determined by differential leveling and
 JU4261.adjusted by the NATIONAL GEODETIC SURVEY
 JU4261.in June 1995.
 JU4261
 JU4261.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4261.GEOID18 height accuracy estimate available here.
 JU4261
 JU4261.Click photographs - Photos may exist for this station.
 JU4261
 JU4261.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4261
 JU4261.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4261
 JU4261.The ellipsoidal height was determined by GPS observations
 JU4261.and is referenced to NAD 83.
 JU4261
 JU4261.The dynamic height is computed by dividing the NAVD 88
 JU4261.geopotential number by the normal gravity value computed on the
 JU4261.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4261.degrees latitude (g = 980.6199 gals.).
 JU4261
 JU4261.The modeled gravity was interpolated from observed gravity values.
 JU4261
 JU4261. The following values were computed from the NAD 83(2011) position.
 JU4261
 JU4261;                    North         East     Units Scale Factor Converg.
 JU4261;SPC MD       -   220,181.550   498,462.766   MT  1.00003983   +0 43 11.9
 JU4261;SPC MD       -   722,378.97  1,635,373.26   sFT  1.00003983   +0 43 11.9
 JU4261;UTM  18      - 4,388,653.238   426,820.228   MT  0.99966593   -0 32 39.1
 JU4261
 JU4261!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4261!SPC MD       -   0.99999774  x   1.00003983  =   1.00003757
 JU4261!UTM  18      -   0.99999774  x   0.99966593  =   0.99966367
 JU4261
 JU4261:                Primary Azimuth Mark                     Grid Az
 JU4261:SPC MD       -  GEESE AZ MK                              254 03 34.0
 JU4261:UTM  18      -  GEESE AZ MK                              255 19 25.0
 JU4261
 JU4261_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2682088653(NAD 83)
 JU4261
 JU4261|---------------------------------------------------------------------|
 JU4261| PID    Reference Object                     Distance      Geod. Az  |
 JU4261|                                                           dddmmss.s |
 JU4261| JU4262 GEESE AZ MK                         APPROX. 1.2 KM 2544645.9 |
 JU4261|---------------------------------------------------------------------|
 JU4261
 JU4261                          SUPERSEDED SURVEY CONTROL
 JU4261
 JU4261  NAD 83(2007)-  39 38 40.33991(N)    075 51 10.43587(W) AD(2002.00) 0
 JU4261  ELLIP H (02/10/07)   14.406  (m)                       GP(2002.00)    
 JU4261  ELLIP H (08/30/02)   14.413  (m)                       GP(       ) 4 2
 JU4261  NAD 83(1991)-  39 38 40.33987(N)    075 51 10.43630(W) AD(       ) 1
 JU4261  ELLIP H (09/15/92)   14.427  (m)                       GP(       ) 4 1
 JU4261  NGVD 29 (09/15/92)   47.7    (m)  GEOID90  model used  GPS OBS        
 JU4261
 JU4261.Superseded values are not recommended for survey control.
 JU4261
 JU4261.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4261.See file dsdata.pdf to determine how the superseded data were derived.
 JU4261
 JU4261_MARKER: DD = SURVEY DISK
 JU4261_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4261_STAMPING: GEESE 1991
 JU4261_MARK LOGO: MDSHA
 JU4261_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4261_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4261+STABILITY: SURFACE MOTION
 JU4261_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4261+SATELLITE: SATELLITE OBSERVATIONS - 1991
 JU4261
 JU4261  HISTORY     - Date     Condition        Report By
 JU4261  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4261
 JU4261                          STATION DESCRIPTION
 JU4261
 JU4261'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4261'THE MARKER IS LOCATED ABOUT 47.1 MI (75.8 KM) NORTHEAST OF BALTIMORE,
 JU4261'2.6 MI (4.2 KM) NORTH-NORTHWEST OF ELKTON AND ALONG THE NORTHBOUND
 JU4261'LANE OF INTERSTATE HIGHWAY 95.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH
 JU4261'THE MARKER FROM A POINT WHERE DEAVER ROAD PASSES OVER INTERSTATE
 JU4261'HIGHWAY 95, GO NORTH ON INTERSTATE HIGHWAY 95 FOR 2.1 MI (3.4 KM) TO
 JU4261'MARK ON RIGHT, A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK
 JU4261'SET IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS
 JU4261'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 27.0 FT (8.2 M)
 JU4261'SOUTHEAST OF THE SOUTHEAST EDGE OF THE MOST SOUTHEAST PAVED SHOULDER
 JU4261'ALONG THE NORTHBOUND LANE OF INTERSTATE HIGHWAY 95 AND 50.5 FT (15.4
 JU4261'M) NORTHWEST OF A 4-FOOT HIGH FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4262 ***********************************************************************
 JU4262  DESIGNATION -  GEESE AZ MK
 JU4262  PID         -  JU4262
 JU4262  STATE/COUNTY-  MD/CECIL
 JU4262  COUNTRY     -  US
 JU4262  USGS QUAD   -  NEWARK WEST (2016)
 JU4262
 JU4262                         *CURRENT SURVEY CONTROL
 JU4262  ______________________________________________________________________
 JU4262* NAD 83(2011) POSITION- 39 38 30.50943(N) 075 51 57.15441(W)   ADJUSTED
 JU4262* NAD 83(2011) ELLIP HT-    -2.424 (meters)        (06/27/12)   ADJUSTED
 JU4262* NAD 83(2011) EPOCH   -  2010.00
 JU4262* NAVD 88 ORTHO HEIGHT -    30.686 (meters)      100.68  (feet) ADJUSTED
 JU4262  ______________________________________________________________________
 JU4262  GEOID HEIGHT    -        -33.103 (meters)                     GEOID18
 JU4262  NAD 83(2011) X  -  1,200,981.757 (meters)                     COMP
 JU4262  NAD 83(2011) Y  - -4,769,285.194 (meters)                     COMP
 JU4262  NAD 83(2011) Z  -  4,047,438.373 (meters)                     COMP
 JU4262  LAPLACE CORR    -          0.19  (seconds)                    DEFLEC18
 JU4262  DYNAMIC HEIGHT  -         30.671 (meters)      100.63  (feet) COMP
 JU4262  MODELED GRAVITY -    980,138.8   (mgal)                       NAVD 88
 JU4262
 JU4262  VERT ORDER      -  SECOND    CLASS I
 JU4262
 JU4262  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4262  Standards:
 JU4262         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4262            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4262  -------------------------------------------------------------------
 JU4262  NETWORK    2.27   4.10           0.91   0.91   2.09      0.35030503
 JU4262  -------------------------------------------------------------------
 JU4262  Click here for local accuracies and other accuracy information.
 JU4262
 JU4262.The horizontal coordinates were established by GPS observations
 JU4262.and adjusted by the National Geodetic Survey in June 2012.
 JU4262
 JU4262.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4262.been affixed to the stable North American tectonic plate. See 
 JU4262.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4262
 JU4262.The horizontal coordinates are valid at the epoch date displayed above
 JU4262.which is a decimal equivalence of Year/Month/Day.
 JU4262
 JU4262.The orthometric height was determined by differential leveling and
 JU4262.adjusted by the NATIONAL GEODETIC SURVEY
 JU4262.in June 1995.
 JU4262
 JU4262.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4262.GEOID18 height accuracy estimate available here.
 JU4262
 JU4262.Click photographs - Photos may exist for this station.
 JU4262
 JU4262.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4262
 JU4262.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4262
 JU4262.The ellipsoidal height was determined by GPS observations
 JU4262.and is referenced to NAD 83.
 JU4262
 JU4262.The dynamic height is computed by dividing the NAVD 88
 JU4262.geopotential number by the normal gravity value computed on the
 JU4262.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4262.degrees latitude (g = 980.6199 gals.).
 JU4262
 JU4262.The modeled gravity was interpolated from observed gravity values.
 JU4262
 JU4262. The following values were computed from the NAD 83(2011) position.
 JU4262
 JU4262;                    North         East     Units Scale Factor Converg.
 JU4262;SPC MD       -   219,864.472   497,352.644   MT  1.00003919   +0 42 42.5
 JU4262;SPC MD       -   721,338.69  1,631,731.13   sFT  1.00003919   +0 42 42.5
 JU4262;UTM  18      - 4,388,360.839   425,703.796   MT  0.99966796   -0 33 08.8
 JU4262
 JU4262!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4262!SPC MD       -   1.00000038  x   1.00003919  =   1.00003957
 JU4262!UTM  18      -   1.00000038  x   0.99966796  =   0.99966834
 JU4262
 JU4262:                Primary Azimuth Mark                     Grid Az
 JU4262:SPC MD       -  GEESE                                    074 03 33.6
 JU4262:UTM  18      -  GEESE                                    075 19 24.9
 JU4262
 JU4262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2570388360(NAD 83)
 JU4262
 JU4262|---------------------------------------------------------------------|
 JU4262| PID    Reference Object                     Distance      Geod. Az  |
 JU4262|                                                           dddmmss.s |
 JU4262| JU4261 GEESE                               APPROX. 1.2 KM 0744616.1 |
 JU4262|---------------------------------------------------------------------|
 JU4262
 JU4262                          SUPERSEDED SURVEY CONTROL
 JU4262
 JU4262  NAD 83(2007)-  39 38 30.50981(N)    075 51 57.15521(W) AD(2002.00) 0
 JU4262  ELLIP H (02/10/07)   -2.395  (m)                       GP(2002.00)    
 JU4262  ELLIP H (08/30/02)   -2.389  (m)                       GP(       ) 4 2
 JU4262  NAD 83(1991)-  39 38 30.50976(N)    075 51 57.15566(W) AD(       ) 1
 JU4262  ELLIP H (09/15/92)   -2.375  (m)                       GP(       ) 4 1
 JU4262  NGVD 29 (09/15/92)   30.9    (m)  GEOID90  model used  GPS OBS        
 JU4262
 JU4262.Superseded values are not recommended for survey control.
 JU4262
 JU4262.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4262.See file dsdata.pdf to determine how the superseded data were derived.
 JU4262
 JU4262_MARKER: DD = SURVEY DISK
 JU4262_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JU4262_SP_SET: JERSEY BARRIER
 JU4262_STAMPING: GEESE AZ 1991
 JU4262_MARK LOGO: MDSHA
 JU4262_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4262_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU4262_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4262+SATELLITE: SATELLITE OBSERVATIONS - September 16, 2014
 JU4262
 JU4262  HISTORY     - Date     Condition        Report By
 JU4262  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4262  HISTORY     - 20050425 GOOD             DEWDAV
 JU4262  HISTORY     - 20100909 GOOD             NGS
 JU4262  HISTORY     - 20110725 GOOD             INDIV
 JU4262  HISTORY     - 20120807 GOOD             INDIV
 JU4262  HISTORY     - 20140916 GOOD             INDIV
 JU4262
 JU4262                          STATION DESCRIPTION
 JU4262
 JU4262'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4262'THE MARKER IS LOCATED ABOUT 47.7 MI (76.8 KM) NORTHEAST OF BALTIMORE,
 JU4262'2.7 MI (4.3 KM) NORTHWEST OF ELKTON AND IN THE MEDIAN OF INTERSTATE
 JU4262'HIGHWAY 95.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARKER FROM A
 JU4262'POINT WHERE DEAVER ROAD PASSES OVER INTERSTATE HIGHWAY 95, GO NORTH
 JU4262'ON INTERSTATE HIGHWAY 95 FOR 1.4 MI (2.3 KM) TO THE MARKER ON THE
 JU4262'LEFT.  THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY
 JU4262'ADMINISTRATION SURVEY DISK IN THE TOP OF THE DEPRESSED EAST END OF A
 JU4262'JERSEY BARRIER.  IT IS 12.5 FT (3.8 M) SOUTH OF THE SOUTH EDGE OF THE
 JU4262'MOST SOUTH PAVED SHOULDER OF THE SOUTHBOUND LANE ALONG INTERSTATE
 JU4262'HIGHWAY 95, 15.6 FT (4.8 M) NORTH OF THE NORTH EDGE OF THE MOST NORTH
 JU4262'PAVED SHOULDER ALONG THE NORTHBOUND LANE OF INTERSTATE HIGHWAY 95 AND
 JU4262'1.0 FT (0.3 M) WEST OF THE EAST END OF THE JERSEY BARRIER.
 JU4262
 JU4262                          STATION RECOVERY (2005)
 JU4262
 JU4262'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (KEC)
 JU4262'RECOVERED IN GOOD CONDITION.
 JU4262
 JU4262                          STATION RECOVERY (2010)
 JU4262
 JU4262'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JU4262'RECOVERED IN GOOD CONDITION.
 JU4262
 JU4262                          STATION RECOVERY (2011)
 JU4262
 JU4262'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 JU4262'RECOVERED BY WRA (JFS)
 JU4262'DESCRIPTION IS ADEQUATE
 JU4262
 JU4262                          STATION RECOVERY (2012)
 JU4262
 JU4262'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2012 (WRA)
 JU4262'RECOVERED AS DESCRIBED
 JU4262'USED FOR GPS RAPID STATIC
 JU4262
 JU4262                          STATION RECOVERY (2014)
 JU4262
 JU4262'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 JU4262'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5657 ***********************************************************************
 JV5657  DESIGNATION -  GENT
 JV5657  PID         -  JV5657
 JV5657  STATE/COUNTY-  MD/BALTIMORE
 JV5657  COUNTRY     -  US
 JV5657  USGS QUAD   -  COCKEYSVILLE (2016)
 JV5657
 JV5657                         *CURRENT SURVEY CONTROL
 JV5657  ______________________________________________________________________
 JV5657* NAD 83(1991) POSITION- 39 28 38.28085(N) 076 42 33.05493(W)   ADJUSTED
 JV5657* NAVD 88 ORTHO HEIGHT -   205.763 (meters)      675.07  (feet) ADJUSTED
 JV5657  ______________________________________________________________________
 JV5657  GEOID HEIGHT    -        -32.251 (meters)                     GEOID18
 JV5657  LAPLACE CORR    -         -3.84  (seconds)                    DEFLEC18
 JV5657  DYNAMIC HEIGHT  -        205.657 (meters)      674.73  (feet) COMP
 JV5657  MODELED GRAVITY -    980,108.6   (mgal)                       NAVD 88
 JV5657
 JV5657  HORZ ORDER      -  FIRST
 JV5657  VERT ORDER      -  SECOND    CLASS I
 JV5657
 JV5657.The horizontal coordinates were established by classical geodetic methods
 JV5657.and adjusted by the National Geodetic Survey in January 1992.
 JV5657
 JV5657.The orthometric height was determined by differential leveling and
 JV5657.adjusted by the NATIONAL GEODETIC SURVEY
 JV5657.in June 2006.
 JV5657
 JV5657.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5657.GEOID18 height accuracy estimate available here.
 JV5657
 JV5657.Click photographs - Photos may exist for this station.
 JV5657
 JV5657.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5657
 JV5657.The dynamic height is computed by dividing the NAVD 88
 JV5657.geopotential number by the normal gravity value computed on the
 JV5657.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV5657.degrees latitude (g = 980.6199 gals.).
 JV5657
 JV5657.The modeled gravity was interpolated from observed gravity values.
 JV5657
 JV5657. The following values were computed from the NAD 83(1991) position.
 JV5657
 JV5657;                    North         East     Units Scale Factor Converg.
 JV5657;SPC MD       -   201,034.513   425,022.472   MT  1.00000489   +0 10 57.1
 JV5657;SPC MD       -   659,560.73  1,394,427.89   sFT  1.00000489   +0 10 57.1
 JV5657;UTM  18      - 4,371,139.536   352,994.207   MT  0.99986608   -1 05 12.6
 JV5657
 JV5657!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5657!SPC MD       -   0.99997278  x   1.00000489  =   0.99997767
 JV5657!UTM  18      -   0.99997278  x   0.99986608  =   0.99983886
 JV5657
 JV5657:                Primary Azimuth Mark                     Grid Az
 JV5657:SPC MD       -  GENT RM 2 AZIMUTH                        133 46 20.0
 JV5657:UTM  18      -  GENT RM 2 AZIMUTH                        135 02 29.7
 JV5657
 JV5657_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5299471139(NAD 83)
 JV5657
 JV5657|---------------------------------------------------------------------|
 JV5657| PID    Reference Object                     Distance      Geod. Az  |
 JV5657|                                                           dddmmss.s |
 JV5657| CA9449 GENT RM 1                            31.153 METERS 02113     |
 JV5657| JV5654 MAYS CHAPEL BALTIMORE GAS MAST      APPROX. 4.3 KM 1250252.5 |
 JV5657| CA9450 GENT RM 2 AZIMUTH                                  1335717.1 |
 JV5657| CB1043 CARVER AZ MK                                       1544616.1 |
 JV5657| JV5496 BALTIMORE TV STATION WMAR MAST      APPROX.22.4 KM 1583225.8 |
 JV5657| CA9451 GENT RM 3                            24.872 METERS 17444     |
 JV5657| JV5646 BALTIMORE RADIO WCAO N MAST         APPROX. 9.9 KM 1853702.4 |
 JV5657|---------------------------------------------------------------------|
 JV5657
 JV5657                          SUPERSEDED SURVEY CONTROL
 JV5657
 JV5657  NAD 83(1986)-  39 28 38.27777(N)    076 42 33.06169(W) AD(       ) 1
 JV5657  NAD 27      -  39 28 37.89520(N)    076 42 34.15430(W) AD(       ) 1
 JV5657
 JV5657.Superseded values are not recommended for survey control.
 JV5657
 JV5657.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5657.See file dsdata.pdf to determine how the superseded data were derived.
 JV5657
 JV5657_MARKER: DS = TRIANGULATION STATION DISK
 JV5657_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5657_STAMPING: GENT 1933
 JV5657_MARK LOGO: CGS
 JV5657_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV5657_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5657+STABILITY: SURFACE MOTION
 JV5657_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5657+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2015
 JV5657
 JV5657  HISTORY     - Date     Condition        Report By
 JV5657  HISTORY     - 1933     MONUMENTED       CGS
 JV5657  HISTORY     - 1935     GOOD             CGS
 JV5657  HISTORY     - 1938     GOOD             CGS
 JV5657  HISTORY     - 1944     GOOD             CGS
 JV5657  HISTORY     - 1957     GOOD             CGS
 JV5657  HISTORY     - 19990907 GOOD             MDSHA
 JV5657  HISTORY     - 20090930 GOOD             MD-005
 JV5657  HISTORY     - 20150615 GOOD             USPSQD
 JV5657
 JV5657                          STATION DESCRIPTION
 JV5657
 JV5657'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5657'STATION IS ON THE GROUNDS OF THE SHAWAN METHODIST EPISCOPAL CHURCH
 JV5657'1-1/2 MILES S OF THE VILLAGE OF SHAWAN.
 JV5657'
 JV5657'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV5657'BRONZE DISKS SET IN CONCRETE.
 JV5657'
 JV5657'REFERENCE MARK NO.1 IS 102.23 FEET NE OF THE STATION AT THE SW
 JV5657'CORNER OF THE SHED BETWEEN TWO PRIVIES WHICH ARE 70 FEET N OF THE
 JV5657'BUILDING W OF THE CHURCH.  REFERENCE MARK NO.3 IS 81.63 FEET S
 JV5657'OF THE STATION, 40 FEET N OF THE CENTER LINE OF THE ROAD AT THE
 JV5657'W EDGE OF THE CHURCH GROUNDS.  REFERENCE MARK NO.2 IS 0.30 MILE
 JV5657'SE OF THE STATION, 21 FEET E OF THE CENTER LINE OF HIGHWAY 25,
 JV5657'31 PACES S OF A CONCRETE CULVERT 14 PACES N OF A CHERRY TREE.
 JV5657'THE MARK IS VISIBLE FROM THE GROUND AT THE STATION BUT
 JV5657'BRANCHES AND FOLIAGE OF THE FRUIT ORCHARD WHICH IS S OF THE
 JV5657'CHURCH MAY OBSCURE IT.
 JV5657'
 JV5657'TO REACH GO TO SHAWAN FROM HIGHWAY 111, AS FOLLOWS.  TURN W AT
 JV5657'THE TOWN OF MARBLE HILL ON THE WESTERN RIDGE ROAD, GO 3.4 MILES
 JV5657'TO SHAWAN, AT SHAWAN, TURN LEFT GO S 1.5 MILES TO THE CHURCH ON
 JV5657'THE W SIDE OF THE ROAD.  TURN RIGHT ON THIS ROAD AND GO 0.1 MILE
 JV5657'TO THE WESTERN EDGE OF THE CHURCH GROUNDS AT THE STATION.
 JV5657'STATION IS ON THE W SIDE OF THE CHURCH GROUNDS, 100 FEET N OF THE
 JV5657'ROAD RUNNING W FROM THE CHURCH, 56.4 FEET W OF THE SW CORNER
 JV5657'AND 60 FEET SW OF THE NW CORNER OF THE BUILDING WHICH IS 50 FEET W
 JV5657'OF THE CHURCH.
 JV5657'
 JV5657'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5657
 JV5657                          STATION RECOVERY (1935)
 JV5657
 JV5657'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (CFM)
 JV5657'IT APPEARS THAT IN THE FOURTH LINE OF THE DESCRIPTION, WESTERN
 JV5657'RIDGE SHOULD READ WESTERN RUN ROAD.
 JV5657
 JV5657                          STATION RECOVERY (1938)
 JV5657
 JV5657'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV5657'THE STATION, AZIMUTH, AND REFERENCE MARKS RECOVERED AS NOTED.
 JV5657'
 JV5657'ORIGINAL DESCRIPTION GOOD.
 JV5657
 JV5657                          STATION RECOVERY (1944)
 JV5657
 JV5657'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944 (OBB)
 JV5657'(CARD DATED MAY 7, 1944 FROM O.B. BESTOR, BALTIMORE, MD.)--STATION
 JV5657'AND REFERENCE MARKS 1 AND 3 WERE FOUND IN GOOD CONDITION.  THE
 JV5657'DESCRIPTION FITS PRESENT CONDITIONS.
 JV5657'
 JV5657'REFERENCE MARK 2 (AZIMUTH MARK) WAS NOT FOUND.  THE DESCRIPTION
 JV5657'INDICATES THAT IT SHOULD LIE IN THE LINE OF TELEPHONE POLES E OF
 JV5657'HIGHWAY, AND THESE SKIRT THE EDGE OF A PLOUGHED FIELD.  THE
 JV5657'CULVERT IS A CORRUGATED PIPE WITH CONCRETE HEAD WALLS.  THE CHERRY
 JV5657'TREE WAS NOT FOUND.
 JV5657
 JV5657                          STATION RECOVERY (1957)
 JV5657
 JV5657'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5657'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO
 JV5657'BE IN GOOD CONDITION.  ALL DISTANCES AND DIRECTIONS CHECKED THE
 JV5657'ORIGINAL DESCRIPTION WHICH IS ADEQUATE.
 JV5657'
 JV5657'1957 OBSERVATIONS TAKEN FROM A 90-FT. TOWER--
 JV5657
 JV5657                          STATION RECOVERY (1999)
 JV5657
 JV5657'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999
 JV5657'THE STATION IS LOCATED ABOUT 1.2 MILES (1.9 KM) SOUTH OF SHAWAN, 3.3
 JV5657'MILES (5.3 KM) WEST OF COCKEYSVILLE AND 5.5 MILES (8.9 KM) NORTHEAST
 JV5657'OF OWINGS MILLS, AT THE WEST EDGE OF THE UNITED METHODIST CHURCH
 JV5657'GROUNDS IN THE TOWN OF GRACE.  TO REACH THE STATION FROM THE
 JV5657'INTERSECTION OF JOPPA ROAD, JONES FALLS EXPRESSWAY AND MARYLAND STATE
 JV5657'HIGHWAY 25 (FALLS ROAD) IN BROOKLANDVILLE, PROCEED NORTHWEST ALONG
 JV5657'MARYLAND STATE HIGHWAY 25 FOR 4.8 MILES (7.7 KM) TO RIDGE ROAD LEADING
 JV5657'SOUTHWEST AND THE STATION ON THE LEFT.  IT IS ABOUT 150 FEET (45.7 M)
 JV5657'NORTH OF THE CENTER OF RIDGE ROAD, 24.5 FEET (7.5 M) WEST OF THE
 JV5657'SOUTHWEST CORNER AND 33.2 FEET (10.1 M) SOUTHWEST OF THE NORTHWEST
 JV5657'CORNER OF THE L-SHAPED BUILDING WHICH IS 50 FEET (15.2 M) WEST OF THE
 JV5657'CHURCH, 35.5 FT (10.8 M) SOUTH OF A WOODEN LIGHT POLE, 43.5 FT (13.3
 JV5657'M) NORTHEAST OF TELEPHONE JUNCTION BOX NUMBER 2 AND ABOUT 3 INCHES
 JV5657'ABOVE THE LEVEL OF THE GROUND.
 JV5657
 JV5657                          STATION RECOVERY (2009)
 JV5657
 JV5657'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (PAS)
 JV5657'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (PAS).
 JV5657'RECOVERED STATION AS DESCRIBED AND ALSO RECOVERED GENT RM 1 AND GENT
 JV5657'RM 3.
 JV5657
 JV5657                          STATION RECOVERY (2015)
 JV5657
 JV5657'RECOVERY NOTE BY US POWER SQUADRON 2015
 JV5657'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 CA9449 ***********************************************************************
 CA9449  DESIGNATION -  GENT RM 1
 CA9449  PID         -  CA9449
 CA9449  STATE/COUNTY-  MD/BALTIMORE
 CA9449  COUNTRY     -  US
 CA9449  USGS QUAD   -  COCKEYSVILLE (2016)
 CA9449
 CA9449                         *CURRENT SURVEY CONTROL
 CA9449  ______________________________________________________________________
 CA9449* NAD 83(1986) POSITION- 39 28 39.22   (N) 076 42 32.58   (W)   HD_HELD1
 CA9449* NAVD 88 ORTHO HEIGHT -   205.502 (meters)      674.22  (feet) ADJUSTED
 CA9449  ______________________________________________________________________
 CA9449  GEOID HEIGHT    -        -32.251 (meters)                     GEOID18
 CA9449  DYNAMIC HEIGHT  -        205.397 (meters)      673.87  (feet) COMP
 CA9449  MODELED GRAVITY -    980,108.5   (mgal)                       NAVD 88
 CA9449
 CA9449  VERT ORDER      -  SECOND    CLASS I
 CA9449
 CA9449.The horizontal coordinates were determined by differentially corrected
 CA9449.hand held GPS observations or other comparable positioning techniques
 CA9449.and have an estimated accuracy of +/- 3 meters.
 CA9449
 CA9449.The orthometric height was determined by differential leveling and
 CA9449.adjusted by the NATIONAL GEODETIC SURVEY
 CA9449.in June 2006.
 CA9449
 CA9449.Significant digits in the geoid height do not necessarily reflect accuracy.
 CA9449.GEOID18 height accuracy estimate available here.
 CA9449
 CA9449.Click photographs - Photos may exist for this station.
 CA9449
 CA9449.The dynamic height is computed by dividing the NAVD 88
 CA9449.geopotential number by the normal gravity value computed on the
 CA9449.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 CA9449.degrees latitude (g = 980.6199 gals.).
 CA9449
 CA9449.The modeled gravity was interpolated from observed gravity values.
 CA9449
 CA9449;                    North         East    Units  Estimated Accuracy
 CA9449;SPC MD       -   201,063.5     425,033.7     MT  (+/- 3 meters HH1 GPS) 
 CA9449
 CA9449_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5300671168(NAD 83)
 CA9449
 CA9449                          SUPERSEDED SURVEY CONTROL
 CA9449
 CA9449.No superseded survey control is available for this station.
 CA9449
 CA9449_MARKER: DR = REFERENCE MARK DISK
 CA9449_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 CA9449_STAMPING: GENT NO 1 1933
 CA9449_MARK LOGO: CGS
 CA9449_PROJECTION: FLUSH
 CA9449_MAGNETIC: O = OTHER; SEE DESCRIPTION
 CA9449_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 CA9449+STABILITY: SURFACE MOTION
 CA9449_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 CA9449+SATELLITE: SATELLITE OBSERVATIONS - February 13, 2025
 CA9449
 CA9449  HISTORY     - Date     Condition        Report By
 CA9449  HISTORY     - 1933     MONUMENTED       CGS
 CA9449  HISTORY     - 19991206 GOOD             MDSHA
 CA9449  HISTORY     - 20090930 GOOD             MD-005
 CA9449  HISTORY     - 20150615 GOOD             USPSQD
 CA9449  HISTORY     - 20250213 GOOD             MDSHA
 CA9449
 CA9449                          STATION DESCRIPTION
 CA9449
 CA9449'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 CA9449'THE STATION IS LOCATED ABOUT 1.2 MILES (1.9 KM) SOUTH OF SHAWAN, 3.3
 CA9449'MILES (5.3 KM) WEST OF COCKEYSVILLE, 5.5 MILES (8.9 KM) NORTHEAST OF
 CA9449'OWINGS MILLS, AT THE UNITED METHODIST CHURCH IN THE TOWN OF GRACE. TO
 CA9449'REACH THE STATION FROM THE INTERSECTION OF WEST JOPPA ROAD, JONES
 CA9449'FALLS EXPRESSWAY AND MARYLAND STATE HIGHWAY 25 (FALLS ROAD) IN
 CA9449'BROOKLANDVILLE, PROCEED NORTHWEST ALONG MARYLAND STATE HIGHWAY 25 FOR
 CA9449'4.8 MILES (7.7 KM) TO RIDGE ROAD AND THE STATION ON THE LEFT.  IT IS A
 CA9449'COAST AND GEODETIC REFERENCE MARK DISK SET IN THE TOP OF A CONCRETE
 CA9449'MONUMENT, 102.2 FT (31.2 M) NORTHEAST OF THE STATION AT A PLAY AREA ON
 CA9449'THE NORTH EDGE OF THE GROUNDS, 79.5 FT (24.2 M) NORTHEAST OF A WOODEN
 CA9449'LIGHT POLE, 41.2 FT (12.6 M) NORTHEAST OF THE NORTHWEST CORNER OF A
 CA9449'ENCLOSED PORCH AREA AT THE NORTH SIDE OF THE BUILDING WEST OF THE
 CA9449'CHURCH, 39.8 FT (12.1 M) NORTHWEST OF THE NORTHEAST CORNER OF THE
 CA9449'PORCH AREA, 75.4 FT (23.0 M) WEST OF A WOODEN LIGHT POLE AND
 CA9449'PROJECTING ABOUT 2 INCHES.
 CA9449
 CA9449                          STATION RECOVERY (2009)
 CA9449
 CA9449'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (PAS)
 CA9449'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (PAS).
 CA9449'RECOVERED STATION AS DESCRIBED AND ALSO RECOVERED STATION GENT AS WELL
 CA9449'AS GENT RM 3. IN THE COURSE OF PERFORMING A LEVEL RUN WITH THESE
 CA9449'MARKERS IT APPEARS THE NGS PUBLISHED ELEVATIONS FOR RM 1 AND RM 3 ARE
 CA9449'REVERSED. THE NAVD 88 ELEVATION FOR GENT RM 1 WAS FOUND TO BE 205.909
 CA9449'METERS OR 675.55 FEET.
 CA9449
 CA9449                          STATION RECOVERY (2015)
 CA9449
 CA9449'RECOVERY NOTE BY US POWER SQUADRON 2015
 CA9449'RECOVERED IN GOOD CONDITION.
 CA9449
 CA9449                          STATION RECOVERY (2025)
 CA9449
 CA9449'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 CA9449'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 CA9451 ***********************************************************************
 CA9451  DESIGNATION -  GENT RM 3
 CA9451  PID         -  CA9451
 CA9451  STATE/COUNTY-  MD/BALTIMORE
 CA9451  COUNTRY     -  US
 CA9451  USGS QUAD   -  COCKEYSVILLE (2016)
 CA9451
 CA9451                         *CURRENT SURVEY CONTROL
 CA9451  ______________________________________________________________________
 CA9451* NAD 83(1986) POSITION- 39 28 37.48   (N) 076 42 32.96   (W)   HD_HELD1
 CA9451* NAVD 88 ORTHO HEIGHT -   205.909 (meters)      675.55  (feet) ADJUSTED
 CA9451  ______________________________________________________________________
 CA9451  GEOID HEIGHT    -        -32.251 (meters)                     GEOID18
 CA9451  DYNAMIC HEIGHT  -        205.804 (meters)      675.21  (feet) COMP
 CA9451  MODELED GRAVITY -    980,108.7   (mgal)                       NAVD 88
 CA9451
 CA9451  VERT ORDER      -  SECOND    CLASS I
 CA9451
 CA9451.The horizontal coordinates were determined by differentially corrected
 CA9451.hand held GPS observations or other comparable positioning techniques
 CA9451.and have an estimated accuracy of +/- 3 meters.
 CA9451
 CA9451.The orthometric height was determined by differential leveling and
 CA9451.adjusted by the NATIONAL GEODETIC SURVEY
 CA9451.in June 2006.
 CA9451
 CA9451.Significant digits in the geoid height do not necessarily reflect accuracy.
 CA9451.GEOID18 height accuracy estimate available here.
 CA9451
 CA9451.Click photographs - Photos may exist for this station.
 CA9451
 CA9451.The dynamic height is computed by dividing the NAVD 88
 CA9451.geopotential number by the normal gravity value computed on the
 CA9451.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 CA9451.degrees latitude (g = 980.6199 gals.).
 CA9451
 CA9451.The modeled gravity was interpolated from observed gravity values.
 CA9451
 CA9451;                    North         East    Units  Estimated Accuracy
 CA9451;SPC MD       -   201,009.8     425,024.8     MT  (+/- 3 meters HH1 GPS) 
 CA9451
 CA9451_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5299671114(NAD 83)
 CA9451
 CA9451                          SUPERSEDED SURVEY CONTROL
 CA9451
 CA9451.No superseded survey control is available for this station.
 CA9451
 CA9451_MARKER: DR = REFERENCE MARK DISK
 CA9451_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 CA9451_STAMPING: GENT NO 3 1933
 CA9451_MARK LOGO: CGS
 CA9451_MAGNETIC: O = OTHER; SEE DESCRIPTION
 CA9451_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 CA9451+STABILITY: SURFACE MOTION
 CA9451_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 CA9451+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2015
 CA9451
 CA9451  HISTORY     - Date     Condition        Report By
 CA9451  HISTORY     - 1933     MONUMENTED       CGS
 CA9451  HISTORY     - 19991206 GOOD             MDSHA
 CA9451  HISTORY     - 20090930 GOOD             MD-005
 CA9451  HISTORY     - 20150615 GOOD             USPSQD
 CA9451
 CA9451                          STATION DESCRIPTION
 CA9451
 CA9451'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 CA9451'THE STATION IS LOCATED ABOUT 1.2 MILES (1.9 KM) SOUTH OF SHAWAN, 3.3
 CA9451'MILES (5.3 KM) WEST OF COCKEYSVILLE, 5.5 MILES (8.9 KM) NORTHEAST OF
 CA9451'OWINGS MILLS, AT THE WEST EDGE OF THE UNITED METHODIST CHURCH GROUNDS
 CA9451'IN THE TOWN OF GRACE.  TO REACH THE STATION FROM THE INTERSECTION OF
 CA9451'WEST JOPPA ROAD, JONES FALLS EXPRESSWAY AND MARYLAND STATE HIGHWAY 25
 CA9451'(FALLS ROAD) IN BROOKLANDVILLE, PROCEED NORTHWEST ALONG MARYLAND STATE
 CA9451'HIGHWAY 25 FOR 4.8 MILES (7.7 KM) TO RIDGE ROAD AND THE STATION ON THE
 CA9451'LEFT.  IT IS A COAST AND GEODETIC REFERENCE MARK DISK SET IN THE TOP
 CA9451'OF A CONCRETE MONUMENT, 84.5 FT (25.8 M) NORTH OF THE CENTER LINE OF
 CA9451'RIDGE ROAD, 90.5 FEET (27.6 M) NORTHWEST OF POWER POLE NUMBER 490408,
 CA9451'11.5 FT (3.5 M) WEST OF THE WEST EDGE OF THE MACADAM PARKING LOT, 81.1
 CA9451'FEET (24.7 M) SOUTHWEST OF THE STATION AND PROJECTING 6 INCHES ABOVE
 CA9451'THE SURFACE OF THE GROUND.
 CA9451
 CA9451                          STATION RECOVERY (2009)
 CA9451
 CA9451'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (PAS)
 CA9451'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (PAS).
 CA9451'RECOVERED STATION AS DESCRIBED AND ALSO RECOVERED STATION GENT AS WELL
 CA9451'AS GENT RM 1. IN THE COURSE OF PERFORMING A LEVEL RUN WITH THESE
 CA9451'MARKERS IT APPEARS THE NGS PUBLISHED ELEVATIONS FOR RM 1 AND RM 3 ARE
 CA9451'REVERSED. THE NAVD 88 ELEVATION FOR GENT RM 3 WAS FOUND TO BE 205.502
 CA9451'METERS OR 674.22 FEET.
 CA9451
 CA9451                          STATION RECOVERY (2015)
 CA9451
 CA9451'RECOVERY NOTE BY US POWER SQUADRON 2015
 CA9451'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1876 ***********************************************************************
 HU1876  DESIGNATION -  GEOG
 HU1876  PID         -  HU1876
 HU1876  STATE/COUNTY-  MD/SOMERSET
 HU1876  COUNTRY     -  US
 HU1876  USGS QUAD   -  MARION (2016)
 HU1876
 HU1876                         *CURRENT SURVEY CONTROL
 HU1876  ______________________________________________________________________
 HU1876* NAD 83(1993) POSITION- 38 02 49.08085(N) 075 49 24.51226(W)   ADJUSTED
 HU1876* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1876  ______________________________________________________________________
 HU1876  GEOID HEIGHT    -        -36.038 (meters)                     GEOID18
 HU1876  LAPLACE CORR    -         -1.76  (seconds)                    DEFLEC18
 HU1876  HORZ ORDER      -  THIRD
 HU1876
 HU1876.The horizontal coordinates were established by classical geodetic methods
 HU1876.and adjusted by the National Geodetic Survey in November 1994.
 HU1876
 HU1876.The orthometric height was scaled from a topographic map.
 HU1876
 HU1876.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1876.GEOID18 height accuracy estimate available here.
 HU1876
 HU1876.Click photographs - Photos may exist for this station.
 HU1876
 HU1876.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1876
 HU1876. The following values were computed from the NAD 83(1993) position.
 HU1876
 HU1876;                    North         East     Units Scale Factor Converg.
 HU1876;SPC MD       -    42,881.037   503,273.772   MT  1.00005365   +0 44 18.3
 HU1876;SPC MD       -   140,685.54  1,651,157.37   sFT  1.00005365   +0 44 18.3
 HU1876;SPC VA S     - 1,193,509.006 3,734,907.913   MT  1.00001564   +1 37 28.0
 HU1876;SPC VA S     - 3,915,704.13 12,253,610.38   sFT  1.00001564   +1 37 28.0
 HU1876;UTM  18      - 4,211,346.131   427,746.571   MT  0.99966430   -0 30 27.1
 HU1876
 HU1876!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1876!SPC MD       -   1.00000554  x   1.00005365  =   1.00005919
 HU1876!SPC VA S     -   1.00000554  x   1.00001564  =   1.00002118
 HU1876!UTM  18      -   1.00000554  x   0.99966430  =   0.99966984
 HU1876
 HU1876:                Primary Azimuth Mark                     Grid Az
 HU1876:SPC MD       -  HAS                                      287 31 58.8
 HU1876:SPC VA S     -  HAS                                      286 38 49.1
 HU1876:UTM  18      -  HAS                                      288 46 44.2
 HU1876
 HU1876_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2774611346(NAD 83)
 HU1876
 HU1876|---------------------------------------------------------------------|
 HU1876| PID    Reference Object                     Distance      Geod. Az  |
 HU1876|                                                           dddmmss.s |
 HU1876| HU1880 COLBURN                             APPROX. 1.9 KM 0801154.0 |
 HU1876| HU1877 HAS                                 APPROX. 4.5 KM 2881617.1 |
 HU1876| HU1875 FORD                                APPROX. 2.4 KM 3453849.5 |
 HU1876|---------------------------------------------------------------------|
 HU1876
 HU1876                          SUPERSEDED SURVEY CONTROL
 HU1876
 HU1876  NAD 83(1991)-  38 02 49.07857(N)    075 49 24.51578(W) AD(       ) 3
 HU1876  NAD 83(1986)-  38 02 49.07903(N)    075 49 24.53428(W) AD(       ) 3
 HU1876  NAD 27      -  38 02 48.64200(N)    075 49 25.78400(W) AD(       ) 3
 HU1876  USSD        -  38 02 48.99100(N)    075 49 25.50900(W) AD(       ) 3
 HU1876
 HU1876.Superseded values are not recommended for survey control.
 HU1876
 HU1876.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1876.See file dsdata.pdf to determine how the superseded data were derived.
 HU1876
 HU1876_MARKER: H = DRILL HOLE
 HU1876_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1876_STAMPING: N.S.F.C.  U.S.C.S.
 HU1876_MARK LOGO: MDSFC
 HU1876_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1876+STABILITY: SURFACE MOTION
 HU1876
 HU1876  HISTORY     - Date     Condition        Report By
 HU1876  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1876  HISTORY     - 1942     GOOD             CGS
 HU1876  HISTORY     - 1973     GOOD             MDDNR
 HU1876  HISTORY     - 1975     POOR             MDDNR
 HU1876
 HU1876                          STATION DESCRIPTION
 HU1876
 HU1876'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1876'STATION IS ON THE S SHORE OF BIG ANNEMESSEX RIVER, ON THE POINT
 HU1876'ON E SIDE OF A SQUARE-SHAPED INLET ABOUT 3/4 MILE NE OF THE
 HU1876'ENTRANCE TO JONES CREEK.  IT IS ON MARSHLAND ABOUT 50 YARDS BACK
 HU1876'FROM EXTREME END OF POINT, ABOUT 20 YARDS FROM SE CORNER OF
 HU1876'SQUARE-SHAPED BAY, AND ABOUT 25 YARDS FROM E SHORE LINE.  MYRTLE
 HU1876'BUSHES EXTEND ALONG SHORE TO E OF STATION FOR ABOUT 100 YARDS
 HU1876'AND REEDS GROW 25 YARDS TO THE N.  STATION MARK IS A HOLE IN THE
 HU1876'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HU1876'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HU1876'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HU1876'COUNTER-SUNK IN TOP OF POST.  DISTANCES AND BEARINGS TO VARIOUS
 HU1876'POINTS OF REFERENCE ARE AS FOLLOWS--NEAR END OF RED ROOF ON
 HU1876'OPPOSITE SHORE, 3-3/4 MILES, N 31 DEG 01 MIN W.  PINE TREE TO
 HU1876'THE RIGHT OF TWO OTHERS, 4-1/4 MILES, N 24 DEG 27 MIN W.
 HU1876'CHIMNEY ON OYSTER HOUSE (STATION FORD), 1-1/2 MILES, N 14 DEG
 HU1876'22 MIN W.  CENTER GABLE OF RED HOUSE, 3-7/8 MILES, N 37 DEG 53
 HU1876'MIN E.  CHIMNEY ON MIDDLE OF DARK RED OYSTER HOUSE, 1 MILE, N 83 DEG
 HU1876'41 MIN E.
 HU1876
 HU1876                          STATION RECOVERY (1942)
 HU1876
 HU1876'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1876'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HU1876'ORIGINAL DESCRIPTION--
 HU1876'
 HU1876'(1) 10 METERS S OF THE SHORELINE OF THE RIVER, NOT 25 YARDS FROM
 HU1876'THE E SHORELINE.
 HU1876'
 HU1876'(2) REEDS GROW 25 YARDS TO THE S OF THE STATION, NOT N OF THE
 HU1876'STATION.
 HU1876'
 HU1876'(3) THE MONUMENT EXTENDS 6 INCHES ABOVE THE GROUND, NOT 4 INCHES.
 HU1876'
 HU1876'THE STATION IS LOCATED ON THE S SHORE OF THE BIG ANNEMESSEX RIVER,
 HU1876'ON THE POINT AT THE E SIDE OF A SQUARE SHAPED COVE ABOUT 3/4 MILE
 HU1876'NE OF THE ENTRANCE TO JONES CREEK, ON MARSHLAND, ABOUT 31 METERS
 HU1876'SE OF THE EXTREME END OF THE POINT, 13 METERS NE OF THE SHORE OF
 HU1876'THE INLET, AND ABOUT 10 METERS S OF THE SHORELINE OF THE
 HU1876'RIVER.  MYRTLE BUSHES EXTEND FROM THE STATION TO A POINT ABOUT
 HU1876'100 YARDS TO THE E AND MARSH REEDS GROW ABOUT 20 YARDS TO THE
 HU1876'S.
 HU1876'
 HU1876'THE STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HU1876'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH
 HU1876'CONCRETE MONUMENT, WHICH EXTENDS 6 INCHES ABOVE THE GROUND.  THE
 HU1876'LETTERS M.S.F.S. AND U.S.C.S. ARE COUNTERSUNK IN THE TOP.  THE
 HU1876'MARK IS IN GOOD CONDITION.
 HU1876
 HU1876                          STATION RECOVERY (1973)
 HU1876
 HU1876'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HU1876'USCS-MSFC IN DANGER.
 HU1876'
 HU1876'RECOVERED AS DESCRIBED.  MARK IS NOW IN WATER ALL THE
 HU1876'TIME.  MONUMENT IS EXPOSED 18 IN AND BEGINNING TO LEAN.  WITNESS
 HU1876'POST AND SIGN PLACED ALONG SIDE MONUMENT TO KEEP MONUMENT FROM
 HU1876'LEANING ANY FURTHER.
 HU1876
 HU1876                          STATION RECOVERY (1975)
 HU1876
 HU1876'RECOVERY NOTE BY MD DEPT OF NAT RES 1975 (GEH)
 HU1876'MSFC-USCS POOR
 HU1876'
 HU1876'RECOVERED AS DESCRIBED IN VERY POOR CONDITION.  MONUMENT IS NOW
 HU1876'COMPLETELY EXPOSED AND HELD IN POSITION BY 2X4 STAKES DRIVEN
 HU1876'AROUND MONUMENT.  DNR NOW MAINTAINS 12 FT HIGH WOOD SIGNAL OVER
 HU1876'MONUMENT.
 HU1876'
 HU1876'THIS STATION SHOULD BE MOVED TO KEEP FROM HAVING IT DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2322 ***********************************************************************
 JV2322  DESIGNATION -  GEORGE
 JV2322  PID         -  JV2322
 JV2322  STATE/COUNTY-  MD/MONTGOMERY
 JV2322  COUNTRY     -  US
 JV2322  USGS QUAD   -  KENSINGTON (2016)
 JV2322
 JV2322                         *CURRENT SURVEY CONTROL
 JV2322  ______________________________________________________________________
 JV2322* NAD 83(1993) POSITION- 39 01 50.47448(N) 077 07 26.42913(W)   ADJUSTED
 JV2322* NAVD 88 ORTHO HEIGHT -   121.359 (meters)      398.16  (feet) ADJUSTED
 JV2322  ______________________________________________________________________
 JV2322  GEOID HEIGHT    -        -31.791 (meters)                     GEOID18
 JV2322  LAPLACE CORR    -         -2.80  (seconds)                    DEFLEC18
 JV2322  DYNAMIC HEIGHT  -        121.295 (meters)      397.95  (feet) COMP
 JV2322  MODELED GRAVITY -    980,095.9   (mgal)                       NAVD 88
 JV2322
 JV2322  HORZ ORDER      -  SECOND
 JV2322  VERT ORDER      -  SECOND    CLASS 0
 JV2322
 JV2322.The horizontal coordinates were established by classical geodetic methods
 JV2322.and adjusted by the National Geodetic Survey in November 1994.
 JV2322
 JV2322.The orthometric height was determined by differential leveling and
 JV2322.adjusted by the NATIONAL GEODETIC SURVEY
 JV2322.in June 1991.
 JV2322
 JV2322.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2322.GEOID18 height accuracy estimate available here.
 JV2322
 JV2322.Click photographs - Photos may exist for this station.
 JV2322
 JV2322.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2322
 JV2322.The dynamic height is computed by dividing the NAVD 88
 JV2322.geopotential number by the normal gravity value computed on the
 JV2322.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2322.degrees latitude (g = 980.6199 gals.).
 JV2322
 JV2322.The modeled gravity was interpolated from observed gravity values.
 JV2322
 JV2322. The following values were computed from the NAD 83(1993) position.
 JV2322
 JV2322;                    North         East     Units Scale Factor Converg.
 JV2322;SPC MD       -   151,420.121   389,262.769   MT  0.99995349   -0 04 40.2
 JV2322;SPC MD       -   496,784.18  1,277,106.27   sFT  0.99995349   -0 04 40.2
 JV2322;UTM  18      - 4,322,328.540   316,149.081   MT  1.00001622   -1 20 16.6
 JV2322
 JV2322!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2322!SPC MD       -   0.99998595  x   0.99995349  =   0.99993944
 JV2322!UTM  18      -   0.99998595  x   1.00001622  =   1.00000217
 JV2322
 JV2322:                Primary Azimuth Mark                     Grid Az
 JV2322:SPC MD       -  POTOMAC RADIO STA WGMS SW MAST           275 08 11.7
 JV2322:UTM  18      -  POTOMAC RADIO STA WGMS SW MAST           276 23 48.1
 JV2322
 JV2322_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1614922328(NAD 83)
 JV2322
 JV2322|---------------------------------------------------------------------|
 JV2322| PID    Reference Object                     Distance      Geod. Az  |
 JV2322|                                                           dddmmss.s |
 JV2322| JV2323 GEORGE RM 1                          21.705 METERS 02326     |
 JV2322| JV4345 BETHESDA RAD STA WMAL E TWR         APPROX. 2.2 KM 2182449.5 |
 JV2322| JV4343 BETHESDA RAD STA WMAL CEN TWR       APPROX. 2.3 KM 2260153.0 |
 JV2322| JV4347 POTOMAC RADIO STA WGMS SW MAST      APPROX. 4.1 KM 2750331.5 |
 JV2322| JV2321 GEORGE RM 2                          24.393 METERS 27922     |
 JV2322| JV4364 POTOMAC RADIO STA WGMS NE MAST      APPROX. 3.9 KM 2795127.5 |
 JV2322|---------------------------------------------------------------------|
 JV2322
 JV2322                          SUPERSEDED SURVEY CONTROL
 JV2322
 JV2322  NAD 83(1991)-  39 01 50.47409(N)    077 07 26.43006(W) AD(       ) 2
 JV2322  NAD 83(1986)-  39 01 50.47384(N)    077 07 26.43984(W) AD(       ) 2
 JV2322  NAD 27      -  39 01 50.07975(N)    077 07 27.50945(W) AD(       ) 2
 JV2322  NGVD 29             121.59   (m)          398.9    (f) LEVELING    3  
 JV2322  NGVD 29 (11/26/84)  121.586  (m)          398.90   (f) ADJUSTED    2 0
 JV2322
 JV2322.Superseded values are not recommended for survey control.
 JV2322
 JV2322.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2322.See file dsdata.pdf to determine how the superseded data were derived.
 JV2322
 JV2322_MARKER: DS = TRIANGULATION STATION DISK
 JV2322_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2322_STAMPING: GEORGE 1958
 JV2322_MARK LOGO: CGS
 JV2322_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2322+STABILITY: SURFACE MOTION
 JV2322_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2322+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2025
 JV2322
 JV2322  HISTORY     - Date     Condition        Report By
 JV2322  HISTORY     - 1958     MONUMENTED       CGS
 JV2322  HISTORY     - 1958     GOOD             CGS
 JV2322  HISTORY     - 1970     GOOD             MDDT
 JV2322  HISTORY     - 20251031 GOOD             TOPCON
 JV2322
 JV2322                          STATION DESCRIPTION
 JV2322
 JV2322'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2322'STATION IS LOCATED ABOUT 10.0 MILES NORTHWEST OF THE CENTER OF
 JV2322'WASHINGTON D. C., ABOUT 4.0 MILES SOUTH-SOUTHEAST OF THE CENTER OF
 JV2322'ROCKVILLE, ABOUT 50 YARDS EAST OF OVERPASS WHERE GEORGETOWN ROAD
 JV2322'PASSES OVER WASHINGTON CIRCUMFERENTIAL HIGHWAY AND 1.0 MILE EAST
 JV2322'OF WHERE WASHINGTON CIRCUMFERENTIAL HIGHWAY JOINS NEW SUPER U. S.
 JV2322'HIGHWAY NO. 240.  STATION IS 19 FEET NORTH OF CUT EMBANKMENT, 40 FEET
 JV2322'SOUTH OF A 40 INCH TREE AND 5 FEET NORTHWEST OF WITNESS POST.  THE
 JV2322'MARK PROJECTS 3 INCHES AND THE DISK IS STAMPED GEORGE 1958.
 JV2322'
 JV2322'REFERENCE MARK NO. 1 IS 22 FEET NORTH OF A 40 INCH TREE AND 6 FEET
 JV2322'EAST-NORTHEAST OF HICKORY TREE.  THE MARK PROJECTS 6 INCHES AND THE
 JV2322'DISK IS STAMPED GEORGE NO 1 1958.
 JV2322'
 JV2322'REFERENCE MARK NO. 2 IS 10 FEET NORTH OF A CUT EMBANKMENT AND 10 FEET
 JV2322'SOUTH OF A 15 INCH TREE.  THE MARK PROJECTS 4 INCHES AND THE DISK IS
 JV2322'STAMPED GEORGE NO 2 1958.
 JV2322'
 JV2322'TO REACH FROM THE JUNCTION OF U. S. HIGHWAY NO. 240 AND STATE HIGHWAY
 JV2322'NO. 187 WHICH IS ABOUT 2.75 MILES SOUTHEAST OF ROCKVILLE, GO
 JV2322'SOUTHERLY ON STATE HIGHWAY NO. 187 (GEORGETOWN ROAD) FOR 0.1 MILE
 JV2322'TO MONTROSE ROAD.  CONTINUE SOUTHERLY ON STATE HIGHWAY NO. 187
 JV2322'(GEORGETOWN ROAD) FOR 1.45 MILES TO WOODS ROAD LEFT ABOUT 0.05
 JV2322'MILE NORTH OF THE NORTH END OF OVERPASS.  TURN LEFT AND GO
 JV2322'SOUTHEASTERLY THROUGH WOODS FOR 0.15 MILE TO EDGE OF CUT
 JV2322'EMBANKMENT TO NEW HIGHWAY.  TURN LEFT AND GO EASTERLY FOR
 JV2322'ABOUT 50 FEET TO STATION IN SMALL CLEARING AS DESCRIBED.
 JV2322'
 JV2322'NOTE--STATION ERMAN IS VISIBLE FROM GROUND AND MAY BE USED AS AZIMUTH
 JV2322'MARK.
 JV2322'
 JV2322'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV2322
 JV2322                          STATION RECOVERY (1958)
 JV2322
 JV2322'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2322'6 MI SE FROM ROCKVILLE.
 JV2322'ABOUT 1.0 MILE WEST ALONG STATE HIGHWAY 28 FROM THE COURTHOUSE
 JV2322'AT ROCKVILLE, THENCE 5.0 MILES SOUTHEAST ALONG U.S. HIGHWAY
 JV2322'240, ABOUT 0.9 MILE EAST OF A LARGE INTERCHANGE, 0.1 MILE EAST OF
 JV2322'THE OLD GEORGETOWN ROAD BRIDGE OVER THE HIGHWAY, ON THE TOP OF
 JV2322'A HIGH CUT, NEAR THE SOUTH EDGE OF A WOODED AREA, ABOUT 100 FEET
 JV2322'NORTH OF THE PROPOSED HIGHWAY, (UNDER CONSTRUCTION IN 1958),
 JV2322'20 1/2 FEET SOUTHEAST OF A 20-INCH OAK TREE WITH A TRIANGLE BLAZE,
 JV2322'5 1/2 FEET NORTH OF A WHITE WOODEN WITNESS POST, SET IN THE TOP
 JV2322'OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE GROUND AND ABOUT
 JV2322'35 FEET ABOVE THE LEVEL OF THE HIGHWAY.
 JV2322
 JV2322                          STATION RECOVERY (1970)
 JV2322
 JV2322'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1970
 JV2322'STATION AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.
 JV2322'
 JV2322'638 FEET + OR - SOUTH OF THE CENTERLINE OF GEORGETOWN ROAD OVER
 JV2322'INTERSTATE 70S
 JV2322'
 JV2322'148 FEET + OR - EAST OF THE CENTERLINE OF NORTH BOUND LANE OF
 JV2322'INTERSTATE 70S
 JV2322'
 JV2322'25 FEET + OR - EAST OF HIGH CUT BANK
 JV2322
 JV2322                          STATION RECOVERY (2025)
 JV2322
 JV2322'RECOVERY NOTE BY TOPCON 2025 (KR)
 JV2322'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1252 ***********************************************************************
 JW1252  DESIGNATION -  GEORGE
 JW1252  PID         -  JW1252
 JW1252  STATE/COUNTY-  MD/GARRETT
 JW1252  COUNTRY     -  US
 JW1252  USGS QUAD   -  MCHENRY (2016)
 JW1252
 JW1252                         *CURRENT SURVEY CONTROL
 JW1252  ______________________________________________________________________
 JW1252* NAD 83(1995) POSITION- 39 36 41.01474(N) 079 18 20.68946(W)   NO CHECK
 JW1252* NAVD 88 ORTHO HEIGHT -   897.    (meters)     2943.    (feet) SCALED
 JW1252  ______________________________________________________________________
 JW1252  GEOID HEIGHT    -        -31.340 (meters)                     GEOID18
 JW1252  LAPLACE CORR    -          0.47  (seconds)                    DEFLEC18
 JW1252  HORZ ORDER      -  SECOND
 JW1252
 JW1252.The horizontal coordinates were established by classical geodetic methods
 JW1252.and adjusted by the National Geodetic Survey in April 1998.
 JW1252
 JW1252.No horizontal observational check was made to the station.
 JW1252
 JW1252.The orthometric height was scaled from a topographic map.
 JW1252
 JW1252.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1252.GEOID18 height accuracy estimate available here.
 JW1252
 JW1252.Click photographs - Photos may exist for this station.
 JW1252
 JW1252.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1252
 JW1252. The following values were computed from the NAD 83(1995) position.
 JW1252
 JW1252;                    North         East     Units Scale Factor Converg.
 JW1252;SPC MD       -   218,383.266   202,006.437   MT  1.00003222   -1 26 49.8
 JW1252;SPC MD       -   716,479.10    662,749.45   sFT  1.00003222   -1 26 49.8
 JW1252;UTM  17      - 4,385,998.339   645,441.405   MT  0.99986044   +1 04 49.5
 JW1252
 JW1252!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1252!SPC MD       -   0.99986423  x   1.00003222  =   0.99989644
 JW1252!UTM  17      -   0.99986423  x   0.99986044  =   0.99972469
 JW1252
 JW1252_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4544185998(NAD 83)
 JW1252
 JW1252                          SUPERSEDED SURVEY CONTROL
 JW1252
 JW1252  NAD 83(1991)-  39 36 41.01664(N)    079 18 20.69450(W) AD(       ) 2
 JW1252  NAD 83(1986)-  39 36 41.02203(N)    079 18 20.69843(W) AD(       ) 2
 JW1252  NAD 27      -  39 36 40.70990(N)    079 18 21.56268(W) AD(       ) 2
 JW1252
 JW1252.Superseded values are not recommended for survey control.
 JW1252
 JW1252.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1252.See file dsdata.pdf to determine how the superseded data were derived.
 JW1252
 JW1252_MARKER: DB = BENCH MARK DISK
 JW1252_SETTING: 80 = SET IN A BOULDER
 JW1252_STAMPING: GEORGE 1956
 JW1252_MARK LOGO: USGS
 JW1252_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1252+STABILITY: SURFACE MOTION
 JW1252
 JW1252  HISTORY     - Date     Condition        Report By
 JW1252  HISTORY     - 1956     MONUMENTED       USGS
 JW1252
 JW1252                          STATION DESCRIPTION
 JW1252
 JW1252'DESCRIBED BY US GEOLOGICAL SURVEY 1956 (JRS)
 JW1252'THE STATION IS LOCATED ABOUT 1-1/2 MILES SOUTHEAST OF ACCIDENT,
 JW1252'4-1/2 MILES WEST OF BITTINGER, 7-1/2 MILES SOUTH OF THE
 JW1252'PENNSYLVANIA-MARYLAND STATE LINE, 9 MILES EAST OF THE MARYLAND-
 JW1252'WEST VIRGINIA STATE LINE, ON TOP OF A HILL KNOWN LOCALLY AS
 JW1252'GEORGE HILL AND ON PROPERTY OWNED BY MR. ARNOLD C. GEORGE WHO
 JW1252'GAVE PERMISSION FOR THE STATION.
 JW1252'
 JW1252'TO REACH THE STATION FROM THE SCHOOLHOUSE IN ACCIDENT, MARYLAND,
 JW1252'GO NORTH ON U.S. HIGHWAY 219 FOR 0.1 MILE TO A PAVED CROSSROAD.
 JW1252'TURN RIGHT AND GO EASTERLY ON THE PAVED ROAD FOR 1.8 MILES TO THE
 JW1252'SUMMIT OF A GRADE AND A GRAVELED SIDE ROAD RIGHT.  TURN RIGHT AND
 JW1252'GO SOUTHWEST ON THE GRAVELED ROAD FOR 0.3 MILE TO A FORK, BEAR
 JW1252'RIGHT AND GO WESTERLY FOR 0.2 MILE TO A GATE.  PASS THROUGH THE
 JW1252'GATE, GO ABOUT 100 FEET THEN BEAR LEFT OFF THE GRAVELED ROAD
 JW1252'AND GO WESTERLY, UPHILL, FOR 0.15 MILE TO A PIPELINE CROSSING.
 JW1252'BEAR RIGHT AND GO WEST-NORTHWEST FOR 0.15 MILE TO THE STATION
 JW1252'ON THE LEFT.
 JW1252'
 JW1252'GEORGE USGS IS A BRONZE BENCH MARK DISK OF THE U.S. GEOLOGICAL
 JW1252'SURVEY, STAMPED---GEORGE 1956---, CEMENTED IN A DRILL HOLE IN THE
 JW1252'TOP OF A 1 BY 2 FOOT BOULDER THAT PROJECTS 6 INCHES ABOVE THE
 JW1252'GROUND.  IT IS 89.8 FEET SOUTH OF THE PIPELINE CROSSING, 48.3
 JW1252'FEET NORTHWEST OF THE WITNESS POST NEAR THE STATION,
 JW1252'20.6 FEET NORTHWEST OF THE TREE, AND IS ABOUT THE SAME
 JW1252'ELEVATION AS THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2323 ***********************************************************************
 JV2323  DESIGNATION -  GEORGE RM 1
 JV2323  PID         -  JV2323
 JV2323  STATE/COUNTY-  MD/MONTGOMERY
 JV2323  COUNTRY     -  US
 JV2323  USGS QUAD   -  KENSINGTON (2016)
 JV2323
 JV2323                         *CURRENT SURVEY CONTROL
 JV2323  ______________________________________________________________________
 JV2323* NAD 83(1986) POSITION- 39 01 51.12   (N) 077 07 26.07   (W)   HD_HELD1
 JV2323* NAVD 88 ORTHO HEIGHT -   122.021 (meters)      400.33  (feet) ADJUSTED
 JV2323  ______________________________________________________________________
 JV2323  GEOID HEIGHT    -        -31.791 (meters)                     GEOID18
 JV2323  DYNAMIC HEIGHT  -        121.956 (meters)      400.12  (feet) COMP
 JV2323  MODELED GRAVITY -    980,095.9   (mgal)                       NAVD 88
 JV2323
 JV2323  VERT ORDER      -  SECOND    CLASS 0
 JV2323
 JV2323.The horizontal coordinates were determined by differentially corrected
 JV2323.hand held GPS observations or other comparable positioning techniques
 JV2323.and have an estimated accuracy of +/- 3 meters.
 JV2323
 JV2323.The orthometric height was determined by differential leveling and
 JV2323.adjusted by the NATIONAL GEODETIC SURVEY
 JV2323.in June 1991.
 JV2323
 JV2323.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2323.GEOID18 height accuracy estimate available here.
 JV2323
 JV2323.Click photographs - Photos may exist for this station.
 JV2323
 JV2323.The dynamic height is computed by dividing the NAVD 88
 JV2323.geopotential number by the normal gravity value computed on the
 JV2323.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2323.degrees latitude (g = 980.6199 gals.).
 JV2323
 JV2323.The modeled gravity was interpolated from observed gravity values.
 JV2323
 JV2323;                    North         East    Units  Estimated Accuracy
 JV2323;SPC MD       -   151,440.0     389,271.4     MT  (+/- 3 meters HH1 GPS) 
 JV2323
 JV2323_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1615822348(NAD 83)
 JV2323
 JV2323                          SUPERSEDED SURVEY CONTROL
 JV2323
 JV2323  NGVD 29 (11/26/84)  122.248  (m)          401.08   (f) ADJUSTED    2 0
 JV2323
 JV2323.Superseded values are not recommended for survey control.
 JV2323
 JV2323.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2323.See file dsdata.pdf to determine how the superseded data were derived.
 JV2323
 JV2323_MARKER: DR = REFERENCE MARK DISK
 JV2323_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2323_STAMPING: GEORGE NO 1 1958
 JV2323_MARK LOGO: CGS
 JV2323_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2323+STABILITY: SURFACE MOTION
 JV2323
 JV2323  HISTORY     - Date     Condition        Report By
 JV2323  HISTORY     - 1958     MONUMENTED       CGS
 JV2323
 JV2323                          STATION DESCRIPTION
 JV2323
 JV2323'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2323'6 MI SE FROM ROCKVILLE.
 JV2323'ABOUT 1.0 MILE WEST ALONG STATE HIGHWAY 28 FROM THE COURTHOUSE
 JV2323'AT ROCKVILLE, THENCE 5.0 MILES SOUTHEAST ALONG U.S. HIGHWAY 240,
 JV2323'ON THE TOP OF A CUT BANK, ABOUT 0.1 MILE EAST OF THE OLD GEORGETOWN
 JV2323'ROAD BRIDGE OVER THE HIGHWAY, 71.3 FEET NORTH OF THE STATION, 7
 JV2323'FEET NORTHEAST OF A 24-INCH OAK TREE, SET IN THE TOP OF A CONCRETE
 JV2323'POST PROJECTING 3 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2321 ***********************************************************************
 JV2321  DESIGNATION -  GEORGE RM 2
 JV2321  PID         -  JV2321
 JV2321  STATE/COUNTY-  MD/MONTGOMERY
 JV2321  COUNTRY     -  US
 JV2321  USGS QUAD   -  KENSINGTON (2016)
 JV2321
 JV2321                         *CURRENT SURVEY CONTROL
 JV2321  ______________________________________________________________________
 JV2321* NAD 83(1986) POSITION- 39 01 50.60   (N) 077 07 27.43   (W)   HD_HELD1
 JV2321* NAVD 88 ORTHO HEIGHT -   121.072 (meters)      397.22  (feet) ADJUSTED
 JV2321  ______________________________________________________________________
 JV2321  GEOID HEIGHT    -        -31.790 (meters)                     GEOID18
 JV2321  DYNAMIC HEIGHT  -        121.008 (meters)      397.01  (feet) COMP
 JV2321  MODELED GRAVITY -    980,095.9   (mgal)                       NAVD 88
 JV2321
 JV2321  VERT ORDER      -  SECOND    CLASS 0
 JV2321
 JV2321.The horizontal coordinates were determined by differentially corrected
 JV2321.hand held GPS observations or other comparable positioning techniques
 JV2321.and have an estimated accuracy of +/- 3 meters.
 JV2321
 JV2321.The orthometric height was determined by differential leveling and
 JV2321.adjusted by the NATIONAL GEODETIC SURVEY
 JV2321.in June 1991.
 JV2321
 JV2321.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2321.GEOID18 height accuracy estimate available here.
 JV2321
 JV2321.Click photographs - Photos may exist for this station.
 JV2321
 JV2321.The dynamic height is computed by dividing the NAVD 88
 JV2321.geopotential number by the normal gravity value computed on the
 JV2321.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2321.degrees latitude (g = 980.6199 gals.).
 JV2321
 JV2321.The modeled gravity was interpolated from observed gravity values.
 JV2321
 JV2321;                    North         East    Units  Estimated Accuracy
 JV2321;SPC MD       -   151,424.0     389,238.7     MT  (+/- 3 meters HH1 GPS) 
 JV2321
 JV2321_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1612522332(NAD 83)
 JV2321
 JV2321                          SUPERSEDED SURVEY CONTROL
 JV2321
 JV2321  NGVD 29 (11/26/84)  121.300  (m)          397.97   (f) ADJUSTED    2 0
 JV2321
 JV2321.Superseded values are not recommended for survey control.
 JV2321
 JV2321.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2321.See file dsdata.pdf to determine how the superseded data were derived.
 JV2321
 JV2321_MARKER: DR = REFERENCE MARK DISK
 JV2321_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2321_STAMPING: GEORGE NO 2 1958
 JV2321_MARK LOGO: CGS
 JV2321_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2321+STABILITY: SURFACE MOTION
 JV2321
 JV2321  HISTORY     - Date     Condition        Report By
 JV2321  HISTORY     - 1958     MONUMENTED       CGS
 JV2321
 JV2321                          STATION DESCRIPTION
 JV2321
 JV2321'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2321'6 MI SE FROM ROCKVILLE.
 JV2321'ABOUT 1.0 MILE WEST ALONG STATE HIGHWAY 28 FROM THE COURTHOUSE AT
 JV2321'ROCKVILLE, THENCE 5.0 MILES SOUTHEAST ALONG U.S. HIGHWAY 240, ON
 JV2321'THE TOP OF A CUT, ABOUT 0.1 MILE EAST OF THE OLD GEORGETOWN ROAD
 JV2321'BRIDGE OVER THE HIGHWAY, 80.8 FEET WEST OF THE STATION AND SET
 JV2321'IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE
 JV2321'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6225 ***********************************************************************
 DN6225  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6225  DESIGNATION -  GEORGES POINT
 DN6225  PID         -  DN6225
 DN6225  STATE/COUNTY-  MD/CECIL
 DN6225  COUNTRY     -  US
 DN6225  USGS QUAD   -  CECILTON (2016)
 DN6225
 DN6225                         *CURRENT SURVEY CONTROL
 DN6225  ______________________________________________________________________
 DN6225* NAD 83(2011) POSITION- 39 27 26.05929(N) 075 49 58.26297(W)   ADJUSTED
 DN6225* NAD 83(2011) ELLIP HT-   -12.255 (meters)        (06/27/12)   ADJUSTED
 DN6225* NAD 83(2011) EPOCH   -  2010.00
 DN6225* NAVD 88 ORTHO HEIGHT -    21.18  (meters)       69.5   (feet) GPS OBS
 DN6225  ______________________________________________________________________
 DN6225  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6225  GEOID HEIGHT    -        -33.415 (meters)                     GEOID03
 DN6225  GEOID HEIGHT    -        -33.445 (meters)                     GEOID18
 DN6225  NAD 83(2011) X  -  1,206,922.285 (meters)                     COMP
 DN6225  NAD 83(2011) Y  - -4,781,236.118 (meters)                     COMP
 DN6225  NAD 83(2011) Z  -  4,031,631.272 (meters)                     COMP
 DN6225  LAPLACE CORR    -         -1.10  (seconds)                    DEFLEC18
 DN6225
 DN6225  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6225  Standards:
 DN6225         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6225            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6225  -------------------------------------------------------------------
 DN6225  NETWORK    0.52   1.10           0.23   0.19   0.56      0.06275701
 DN6225  -------------------------------------------------------------------
 DN6225  Click here for local accuracies and other accuracy information.
 DN6225
 DN6225.The horizontal coordinates were established by GPS observations
 DN6225.and adjusted by the National Geodetic Survey in June 2012.
 DN6225
 DN6225.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6225.been affixed to the stable North American tectonic plate. See 
 DN6225.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6225
 DN6225.The horizontal coordinates are valid at the epoch date displayed above
 DN6225.which is a decimal equivalence of Year/Month/Day.
 DN6225
 DN6225.The orthometric height was determined by GPS observations and a
 DN6225.high-resolution geoid model using precise GPS observation and
 DN6225.processing techniques.
 DN6225
 DN6225.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6225.GEOID18 height accuracy estimate available here.
 DN6225
 DN6225.Click photographs - Photos may exist for this station.
 DN6225
 DN6225.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6225
 DN6225.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6225
 DN6225.The ellipsoidal height was determined by GPS observations
 DN6225.and is referenced to NAD 83.
 DN6225
 DN6225. The following values were computed from the NAD 83(2011) position.
 DN6225
 DN6225;                    North         East     Units Scale Factor Converg.
 DN6225;SPC MD       -   199,409.473   500,449.370   MT  1.00000127   +0 43 57.2
 DN6225;SPC MD       -   654,229.25  1,641,890.97   sFT  1.00000127   +0 43 57.2
 DN6225;UTM  18      - 4,367,849.810   428,347.958   MT  0.99966321   -0 31 45.5
 DN6225
 DN6225!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6225!SPC MD       -   1.00000192  x   1.00000127  =   1.00000319
 DN6225!UTM  18      -   1.00000192  x   0.99966321  =   0.99966513
 DN6225
 DN6225_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2834767849(NAD 83)
 DN6225
 DN6225                          SUPERSEDED SURVEY CONTROL
 DN6225
 DN6225  NAD 83(2007)-  39 27 26.05937(N)    075 49 58.26363(W) AD(2002.00) 1
 DN6225  ELLIP H (02/23/12)  -12.219  (m)                       GP(2002.00) 4 1
 DN6225
 DN6225.Superseded values are not recommended for survey control.
 DN6225
 DN6225.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6225.See file dsdata.pdf to determine how the superseded data were derived.
 DN6225
 DN6225_MARKER: DD = SURVEY DISK
 DN6225_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6225_STAMPING: GEORGES POINT 2008
 DN6225_MARK LOGO: MD-015
 DN6225_PROJECTION: FLUSH
 DN6225_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6225_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6225+STABILITY: SURFACE MOTION
 DN6225_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6225+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6225
 DN6225  HISTORY     - Date     Condition        Report By
 DN6225  HISTORY     - 20081204 MONUMENTED       GWS
 DN6225
 DN6225                          STATION DESCRIPTION
 DN6225
 DN6225'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6225'THE STATION IS LOCATED ABOUT 5.4 MI (8.7 KM) EAST-NORTHEAST OF
 DN6225'EARLEVILLE, 5.3 MI (8.5 KM) SOUTH-SOUTHWEST OF CHESAPEAKE CITY AND 4.1
 DN6225'MI (6.6 KM) NORTH-NORTHEAST OF CECILTON.
 DN6225'
 DN6225'TO REACH FROM THE JUNCTION OF MD 213 AND MD 282, GO EAST-SOUTHEAST ON
 DN6225'MD 282 FOR 5.40 MI (8.7 KM) TO AN INTERSECTION.  TURN LEFT AND GO
 DN6225'NORTHWEST ON WATER ST FOR 0.30 MI (0.5 KM) TO A FORK.  BEAR RIGHT AND
 DN6225'GO NORTH-NORTHEAST ON OLD TELEGRAPH ROAD FOR 1.75 MI (2.8 KM) TO AN
 DN6225'INTERSECTION.  TURN LEFT AND GO WEST-SOUTHWEST ON MIDDLENECK ROAD FOR
 DN6225'3.17 MI (5.1 KM) TO THE STATION ON THE LEFT.
 DN6225'
 DN6225'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6225'CONCRETE MONUMENT, 99 FT (30.2 M) EAST OF THE DRIVEWAY TO 368
 DN6225'MIDDLENECK ROAD, 12 FT (3.7 M) NORTH OF THE NORTH EDGE OF PAVING OF
 DN6225'MIDDLENECK ROAD, 160.8 FT (49.0 M) EAST OF A 10 FT (3.0 M) SQUARE
 DN6225'CONCRETE MONUMENT WEST OF THE DRIVEWAY TO 368 MIDDLENECK ROAD AND 168
 DN6225'FT (51.2 M) WEST OF A UTILITY POLE WITH NO NUMBER ON THE SOUTH SIDE OF
 DN6225'MIDDLENECK ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4472 ***********************************************************************
 HV4472  DESIGNATION -  GEORGIAN
 HV4472  PID         -  HV4472
 HV4472  STATE/COUNTY-  MD/MONTGOMERY
 HV4472  COUNTRY     -  US
 HV4472  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4472
 HV4472                         *CURRENT SURVEY CONTROL
 HV4472  ______________________________________________________________________
 HV4472* NAD 83(1993) POSITION- 38 59 52.78726(N) 077 01 55.87275(W)   ADJUSTED
 HV4472* NAVD 88 ORTHO HEIGHT -   159.2   (meters)      522.    (feet) VERTCON3
 HV4472  ______________________________________________________________________
 HV4472  GEOID HEIGHT    -        -31.962 (meters)                     GEOID18
 HV4472  LAPLACE CORR    -         -2.84  (seconds)                    DEFLEC18
 HV4472  HORZ ORDER      -  FIRST
 HV4472
 HV4472.The horizontal coordinates were established by classical geodetic methods
 HV4472.and adjusted by the National Geodetic Survey in November 1994.
 HV4472
 HV4472.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV4472.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV4472
 HV4472.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4472.GEOID18 height accuracy estimate available here.
 HV4472
 HV4472.Click photographs - Photos may exist for this station.
 HV4472
 HV4472.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4472
 HV4472. The following values were computed from the NAD 83(1993) position.
 HV4472
 HV4472;                    North         East     Units Scale Factor Converg.
 HV4472;SPC MD       -   147,784.286   397,211.822   MT  0.99995211   -0 01 12.7
 HV4472;SPC MD       -   484,855.61  1,303,185.79   sFT  0.99995211   -0 01 12.7
 HV4472;UTM  18      - 4,318,518.680   324,016.654   MT  0.99998136   -1 16 45.0
 HV4472
 HV4472!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4472!SPC MD       -   0.99998004  x   0.99995211  =   0.99993215
 HV4472!UTM  18      -   0.99998004  x   0.99998136  =   0.99996140
 HV4472
 HV4472:                Primary Azimuth Mark                     Grid Az
 HV4472:SPC MD       -  SILVER SPR RAD STA WQMR MAST             008 26 43.9
 HV4472:UTM  18      -  SILVER SPR RAD STA WQMR MAST             009 42 16.2
 HV4472
 HV4472_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2401618518(NAD 83)
 HV4472
 HV4472|---------------------------------------------------------------------|
 HV4472| PID    Reference Object                     Distance      Geod. Az  |
 HV4472|                                                           dddmmss.s |
 HV4472| JV4289 SILVER SPR RAD STA WQMR MAST        APPROX. 1.8 KM 0082531.2 |
 HV4472| JV4295 WHEATON LUTHER RICE BAP CH          APPROX. 3.8 KM 0133625.0 |
 HV4472| DC6956 KENWOOD APARTMENT ROOF NE CORNER      8.878 METERS 02637     |
 HV4472| JV4291 SILVER SPR METH CH SPIRE            APPROX. 2.9 KM 0352039.2 |
 HV4472| DC6234 GEORGIAN TOWERS ELEVR SHAFT E CORNE   8.921 METERS 07414     |
 HV4472| DC7578 GEORGIAN TOWERS ELEVR SHAFT SSE COR   6.458 METERS 15647     |
 HV4472| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 5.1 KM 3372809.6 |
 HV4472| JV4306 WHEATON RAD STA WTOP CEN TOWER      APPROX. 5.0 KM 3461137.3 |
 HV4472| JV4302 SILVER SPR HOLY CROSS HOSP STK      APPROX. 1.8 KM 3500716.5 |
 HV4472|---------------------------------------------------------------------|
 HV4472
 HV4472                          SUPERSEDED SURVEY CONTROL
 HV4472
 HV4472  NAD 83(1991)-  38 59 52.78701(N)    077 01 55.87311(W) AD(       ) 1
 HV4472  NAD 83(1986)-  38 59 52.78649(N)    077 01 55.88341(W) AD(       ) 1
 HV4472  NAD 27      -  38 59 52.39114(N)    077 01 56.96362(W) AD(       ) 1
 HV4472  NGVD 29 (07/19/86)  159.4    (m)          523.     (f) VERT ANG       
 HV4472
 HV4472.Superseded values are not recommended for survey control.
 HV4472
 HV4472.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4472.See file dsdata.pdf to determine how the superseded data were derived.
 HV4472
 HV4472_MARKER: DS = TRIANGULATION STATION DISK
 HV4472_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 HV4472_SP_SET: APARTMENT BUILDING ROOF
 HV4472_STAMPING: GEORGIAN 1969
 HV4472_MARK LOGO: CGS
 HV4472_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 HV4472+STABILITY: POSITION/ELEVATION WELL
 HV4472
 HV4472  HISTORY     - Date     Condition        Report By
 HV4472  HISTORY     - 1970     MONUMENTED       NGS
 HV4472
 HV4472                          STATION DESCRIPTION
 HV4472
 HV4472'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV4472'THE STATION IS ABOUT 3 MILES SOUTH-SOUTHEAST OF WHEATON, 2 MILES
 HV4472'NORTHWEST OF THE MONTGOMERY-PRINCE GEORGES COUNTY LINE, 1/2 MILE
 HV4472'NORTHEAST OF THE NORTH CORNER OF THE DISTRICT OF COLUMBIA, AND ON
 HV4472'TOP OF THE GEORGIAN TOWERS APARTMENT BUILDING AT 8715 FIRST STREET
 HV4472'IN SILVER SPRING.
 HV4472'
 HV4472'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAY 495
 HV4472'AND STATE HIGHWAY 97, GO SOUTH ON STATE HIGHWAY 97 (GEORGIA AVENUE)
 HV4472'FOR 1.1 MILES TO FENWICK LANE.  TURN RIGHT AND GO WEST ON FENWICK
 HV4472'LANE FOR 0.1 MILE TO FIRST STREET.  TURN RIGHT AND GO NORTH ON
 HV4472'FIRST STREET FOR 0.05 MILE TO THE STATION ON THE RIGHT ON THE ROOF
 HV4472'OF THE BUILDING.
 HV4472'
 HV4472'THE STATION MARK IS A STANDARD DISK, STAMPED GEORGIAN 1969, FIXED TO
 HV4472'THE ROOF WITH ROOFING COMPOUND UNDER A 6-INCH CYLINDRICAL COPPER CAP
 HV4472'THAT PROJECTS 8 INCHES ABOVE THE ROOF.  IT IS ON THE WEST ONE OF
 HV4472'TWO ELEVATOR SHAFTS.
 HV4472'
 HV4472'THE DISTANCE FROM THE AXIS OF THE TELESCOPE TO THE NORTHEAST CORNER
 HV4472'OF THE ELEVATOR SHAFT WAS 29.29 FEET OR 8.925 METERS, TO THE EAST
 HV4472'CORNER WAS 29.42 FEET OR 8.967 METERS, AND TO SOUTHEAST CORNER WAS
 HV4472'21.40 FEET OR 6.522 METERS,.  THESE CORNERS WERE USED AS REFERENCE
 HV4472'POINTS.
 HV4472'
 HV4472'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4455 ***********************************************************************
 JV4455  DESIGNATION -  GERMANTOWN AEC TANK
 JV4455  PID         -  JV4455
 JV4455  STATE/COUNTY-  MD/MONTGOMERY
 JV4455  COUNTRY     -  US
 JV4455  USGS QUAD   -  GERMANTOWN (2016)
 JV4455
 JV4455                         *CURRENT SURVEY CONTROL
 JV4455  ______________________________________________________________________
 JV4455* NAD 83(1991) POSITION- 39 10 42.05404(N) 077 15 22.38207(W)   ADJUSTED
 JV4455  ______________________________________________________________________
 JV4455  GEOID HEIGHT    -        -31.820 (meters)                     GEOID18
 JV4455  LAPLACE CORR    -          2.49  (seconds)                    DEFLEC18
 JV4455  HORZ ORDER      -  THIRD
 JV4455
 JV4455.The horizontal coordinates were established by classical geodetic methods
 JV4455.and adjusted by the National Geodetic Survey in January 1992.
 JV4455
 JV4455.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4455.GEOID18 height accuracy estimate available here.
 JV4455
 JV4455.Click photographs - Photos may exist for this station.
 JV4455
 JV4455.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4455
 JV4455. The following values were computed from the NAD 83(1991) position.
 JV4455
 JV4455;                    North         East     Units Scale Factor Converg.
 JV4455;SPC MD       -   167,836.159   377,861.481   MT  0.99996375   -0 09 38.9
 JV4455;SPC MD       -   550,642.46  1,239,700.54   sFT  0.99996375   -0 09 38.9
 JV4455;UTM  18      - 4,338,993.191   305,111.331   MT  1.00006769   -1 25 32.8
 JV4455
 JV4455_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0511138993(NAD 83)
 JV4455
 JV4455                          SUPERSEDED SURVEY CONTROL
 JV4455
 JV4455  NAD 83(1986)-  39 10 42.05373(N)    077 15 22.39203(W) AD(       ) 3
 JV4455  NAD 27      -  39 10 41.67094(N)    077 15 23.44826(W) AD(       ) 3
 JV4455
 JV4455.Superseded values are not recommended for survey control.
 JV4455
 JV4455.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4455.See file dsdata.pdf to determine how the superseded data were derived.
 JV4455
 JV4455_MARKER: 53 = ELEVATED TANK
 JV4455_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4455+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4455
 JV4455  HISTORY     - Date     Condition        Report By
 JV4455  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV4455  HISTORY     - 1969     GOOD             CGS
 JV4455  HISTORY     - 1983     GOOD             USPSQD
 JV4455  HISTORY     - 19950428 GOOD             USPSQD
 JV4455  HISTORY     - 20031102 GOOD             USPSQD
 JV4455  HISTORY     - 20050303 GOOD             USPSQD
 JV4455
 JV4455                          STATION DESCRIPTION
 JV4455
 JV4455'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV4455'THE STATION IS LOCATED ABOUT 5 MI. NW OF GAITHERSBURG AND ABOUT
 JV4455'1 MI. NE OF GERMANTOWN.  IT IS OF STEEL CONSTRUCTION PAINTED
 JV4455'SILVER, AND IS 127 FT. HIGH WITH A 42-FT. MAST ON TOP OF THE
 JV4455'TANK.  THE RED LIGHT ON TOP OF THE MAST WAS THE POINT INTERSECTED.
 JV4455'
 JV4455'TO REACH THE STATION FROM THE CENTER OF GERMANTOWN, GO N AND NE
 JV4455'ON STATE HIGHWAY 118 FOR 0.8 MI. TO THE ATOMIC ENERGY COMMISSION
 JV4455'PLANT ON THE RIGHT, AND THE STATION APPROXIMATELY 100 YD. SW OF
 JV4455'LARGE BRICK BUILDINGS.
 JV4455
 JV4455                          STATION RECOVERY (1969)
 JV4455
 JV4455'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4455'THE STATION IS THE RED LIGHT MOUNTED ON THE TOP CENTER OF THE
 JV4455'GERMANTOWN ATOMIC ENERGY COMMISSION TANK.  IT IS AN ELEVATED
 JV4455'DOUBLE-ELIPSOIDAL TANK.  THE STATION IS ABOUT 154 FEET ABOVE THE
 JV4455'GROUND.
 JV4455'
 JV4455'THE STATION IS LOCATED 0.5 MILE WEST OF THE JUNCTION OF STATE
 JV4455'HIGHWAY 118 AND INTERSTATE 70.
 JV4455
 JV4455                          STATION RECOVERY (1983)
 JV4455
 JV4455'RECOVERY NOTE BY US POWER SQUADRON 1983 (RWS)
 JV4455'STATION RECOVERED GOOD.
 JV4455'
 JV4455'NO APPARENT CHANGES FROM ORIGINAL DESCRIPTION.  AEC IS NOW
 JV4455'DOE (DEPARTMENT OF ENLRGY).
 JV4455
 JV4455                          STATION RECOVERY (1995)
 JV4455
 JV4455'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4455'RECOVERED IN GOOD CONDITION.
 JV4455
 JV4455                          STATION RECOVERY (2003)
 JV4455
 JV4455'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4455'RECOVERED IN GOOD CONDITION.
 JV4455
 JV4455                          STATION RECOVERY (2005)
 JV4455
 JV4455'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4455'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4454 ***********************************************************************
 JV4454  DESIGNATION -  GERMANTOWN ATT MICROWAVE
 JV4454  PID         -  JV4454
 JV4454  STATE/COUNTY-  MD/MONTGOMERY
 JV4454  COUNTRY     -  US
 JV4454  USGS QUAD   -  GERMANTOWN (2016)
 JV4454
 JV4454                         *CURRENT SURVEY CONTROL
 JV4454  ______________________________________________________________________
 JV4454* NAD 83(1991) POSITION- 39 10 36.74615(N) 077 15 26.08935(W)   ADJUSTED
 JV4454  ______________________________________________________________________
 JV4454  GEOID HEIGHT    -        -31.821 (meters)                     GEOID18
 JV4454  LAPLACE CORR    -          2.50  (seconds)                    DEFLEC18
 JV4454  HORZ ORDER      -  THIRD
 JV4454
 JV4454.The horizontal coordinates were established by classical geodetic methods
 JV4454.and adjusted by the National Geodetic Survey in January 1992.
 JV4454
 JV4454.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4454.GEOID18 height accuracy estimate available here.
 JV4454
 JV4454.Click photographs - Photos may exist for this station.
 JV4454
 JV4454.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4454
 JV4454. The following values were computed from the NAD 83(1991) position.
 JV4454
 JV4454;                    North         East     Units Scale Factor Converg.
 JV4454;SPC MD       -   167,672.728   377,772.040   MT  0.99996362   -0 09 41.2
 JV4454;SPC MD       -   550,106.28  1,239,407.10   sFT  0.99996362   -0 09 41.2
 JV4454;UTM  18      - 4,338,831.757   305,018.294   MT  1.00006813   -1 25 35.0
 JV4454
 JV4454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0501838831(NAD 83)
 JV4454
 JV4454                          SUPERSEDED SURVEY CONTROL
 JV4454
 JV4454  NAD 83(1986)-  39 10 36.74579(N)    077 15 26.09989(W) AD(       ) 3
 JV4454  NAD 27      -  39 10 36.35981(N)    077 15 27.15402(W) AD(       ) 3
 JV4454
 JV4454.Superseded values are not recommended for survey control.
 JV4454
 JV4454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4454.See file dsdata.pdf to determine how the superseded data were derived.
 JV4454
 JV4454_MARKER: 45 = MICROWAVE TOWER
 JV4454_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4454+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4454
 JV4454  HISTORY     - Date     Condition        Report By
 JV4454  HISTORY     - 1958     FIRST OBSERVED   CGS
 JV4454  HISTORY     - 1969     GOOD             CGS
 JV4454  HISTORY     - 19950428 GOOD             USPSQD
 JV4454  HISTORY     - 20031102 GOOD             USPSQD
 JV4454  HISTORY     - 20050303 GOOD             USPSQD
 JV4454
 JV4454                          STATION DESCRIPTION
 JV4454
 JV4454'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4454'THE STATION IS THE RED LIGHT MOUNTED ON THE TOP OF THE GERMANTOWN
 JV4454'ATOMIC ENERGY COMMISSION MICROWAVE.  IT IS ABOUT 250 FEET ABOVE
 JV4454'THE GROUND.
 JV4454'
 JV4454'THE STATION IS LOCATED 1 MILE WEST OF THE JUNCTION OF INTERSTATE
 JV4454'70 AND STATE HIGHWAY 118.
 JV4454'
 JV4454'NOTE--LISTED AS GERMANTOWN ATT RELAY TOWER IN 1958.
 JV4454
 JV4454                          STATION RECOVERY (1995)
 JV4454
 JV4454'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4454'RECOVERED IN GOOD CONDITION.
 JV4454
 JV4454                          STATION RECOVERY (2003)
 JV4454
 JV4454'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 JV4454'RECOVERED IN GOOD CONDITION.
 JV4454
 JV4454                          STATION RECOVERY (2005)
 JV4454
 JV4454'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4454'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7482 ***********************************************************************
 DR7482  CORS        -  This is a GPS Continuously Operating Reference Station.
 DR7482  DESIGNATION -  GGAO NORTH DEEP D CORS ARP
 DR7482  CORS_ID     -  GODN
 DR7482  PID         -  DR7482
 DR7482  STATE/COUNTY-  MD/PRINCE GEORGES
 DR7482  COUNTRY     -  US
 DR7482  USGS QUAD   -  LAUREL (2016)
 DR7482
 DR7482                         *CURRENT SURVEY CONTROL
 DR7482  ______________________________________________________________________
 DR7482* NAD 83(2011) POSITION- 39 01 16.21207(N) 076 49 37.51888(W)   ADJUSTED
 DR7482* NAD 83(2011) ELLIP HT-    19.151 (meters)        (04/??/25)   ADJUSTED
 DR7482* NAD 83(2011) EPOCH   -  2010.00
 DR7482  ______________________________________________________________________
 DR7482  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 DR7482  NAD 83(2011) X  -  1,130,761.660 (meters)                     COMP
 DR7482  NAD 83(2011) Y  - -4,831,300.135 (meters)                     COMP
 DR7482  NAD 83(2011) Z  -  3,994,155.259 (meters)                     COMP
 DR7482
 DR7482  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7482  Standards:
 DR7482         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7482            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7482  -------------------------------------------------------------------
 DR7482  NETWORK    0.04   0.09           0.02   0.02   0.05      0.02145600
 DR7482  -------------------------------------------------------------------
 DR7482
 DR7482.The coordinates were established by GPS observations
 DR7482.and adjusted by the National Geodetic Survey in April 2025.
 DR7482
 DR7482.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7482.been affixed to the stable North American Tectonic Plate. 
 DR7482
 DR7482.The coordinates are valid at the epoch date displayed above
 DR7482.which is a decimal equivalence of Year/Month/Day.
 DR7482
 DR7482.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DR7482.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DR7482.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DR7482.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DR7482.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DR7482.published epoch of 2010.00.
 DR7482
 DR7482.Additional information on MYCS is available at:
 DR7482.https://geodesy.noaa.gov/CORS/index.shtml
 DR7482
 DR7482.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7482.GEOID18 height accuracy estimate available here.
 DR7482
 DR7482.The PID for the CORS L1 Phase Center is DR7483.
 DR7482
 DR7482.Click photographs - Photos may exist for this station.
 DR7482
 DR7482.The XYZ, and position/ellipsoidal ht. are equivalent.
 DR7482
 DR7482.The ellipsoidal height was determined by GPS observations
 DR7482.and is referenced to NAD 83.
 DR7482
 DR7482. The following values were computed from the NAD 83(2011) position.
 DR7482
 DR7482;                    North         East     Units Scale Factor Converg.
 DR7482;SPC MD       -   150,370.482   414,973.518   MT  0.99995306   +0 06 30.7
 DR7482;SPC MD       -   493,340.49  1,361,458.95   sFT  0.99995306   +0 06 30.7
 DR7482;UTM  18      - 4,320,713.958   341,830.736   MT  0.99990806   -1 09 02.1
 DR7482
 DR7482!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7482!SPC MD       -   0.99999700  x   0.99995306  =   0.99995006
 DR7482!UTM  18      -   0.99999700  x   0.99990806  =   0.99990506
 DR7482
 DR7482_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4183020713(NAD 83)
 DR7482
 DR7482                          SUPERSEDED SURVEY CONTROL
 DR7482
 DR7482  NAD 83(2011)-  39 01 16.21209(N)    076 49 37.51892(W) AD(2010.00) c
 DR7482  ELLIP H (12/??/21)   19.158  (m)                       GP(2010.00) c c
 DR7482
 DR7482.Superseded values are not recommended for survey control.
 DR7482
 DR7482.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DR7482.See file dsdata.pdf to determine how the superseded data were derived.
 DR7482
 DR7482_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 DR7482
 DR7482                          STATION DESCRIPTION
 DR7482
 DR7482'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 DR7482'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 DR7482'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 DR7482'AND LOG FILES ACCESSIBLE AT:
 DR7482'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7484 ***********************************************************************
 DR7484  HT_MOD      -  This is a Height Modernization Survey Station.
 DR7484  CORS        -  This is a GPS Continuously Operating Reference Station.
 DR7484  DESIGNATION -  GGAO NORTH DEEP D CORS GRP
 DR7484  CORS_ID     -  GODN
 DR7484  PID         -  DR7484
 DR7484  STATE/COUNTY-  MD/PRINCE GEORGES
 DR7484  COUNTRY     -  US
 DR7484  USGS QUAD   -  LAUREL (2016)
 DR7484
 DR7484                         *CURRENT SURVEY CONTROL
 DR7484  ______________________________________________________________________
 DR7484* NAD 83(2011) POSITION- 39 01 16.21207(N) 076 49 37.51888(W)   ADJUSTED
 DR7484* NAD 83(2011) ELLIP HT-    19.143 (meters)        (04/??/25)   ADJUSTED
 DR7484* NAD 83(2011) EPOCH   -  2010.00
 DR7484* NAVD 88 ORTHO HEIGHT -    51.54  (meters)      169.1   (feet) GPS OBS
 DR7484  ______________________________________________________________________
 DR7484  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 DR7484  NAD 83(2011) X  -  1,130,761.658 (meters)                     COMP
 DR7484  NAD 83(2011) Y  - -4,831,300.129 (meters)                     COMP
 DR7484  NAD 83(2011) Z  -  3,994,155.254 (meters)                     COMP
 DR7484  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 DR7484
 DR7484  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR7484  Standards:
 DR7484         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR7484            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR7484  -------------------------------------------------------------------
 DR7484  NETWORK    0.04   0.09           0.02   0.02   0.05      0.02145600
 DR7484  -------------------------------------------------------------------
 DR7484
 DR7484.The horizontal coordinates were established by GPS observations
 DR7484.and adjusted by the National Geodetic Survey in April 2025.
 DR7484
 DR7484.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7484.been affixed to the stable North American Tectonic Plate. 
 DR7484
 DR7484.The horizontal coordinates are valid at the epoch date displayed above
 DR7484.which is a decimal equivalence of Year/Month/Day.
 DR7484
 DR7484.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DR7484.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DR7484.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DR7484.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DR7484.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DR7484.published epoch of 2010.00.
 DR7484
 DR7484.Additional information on MYCS is available at:
 DR7484.https://geodesy.noaa.gov/CORS/index.shtml
 DR7484
 DR7484.The orthometric height was determined by GPS observations and a
 DR7484.high-resolution geoid model using precise GPS observation and
 DR7484.processing techniques.
 DR7484
 DR7484.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7484.GEOID18 height accuracy estimate available here.
 DR7484
 DR7484.Click photographs - Photos may exist for this station.
 DR7484
 DR7484.The XYZ, and position/ellipsoidal ht. are equivalent.
 DR7484
 DR7484.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7484
 DR7484.The ellipsoidal height was determined by GPS observations
 DR7484.and is referenced to NAD 83.
 DR7484
 DR7484. The following values were computed from the NAD 83(2011) position.
 DR7484
 DR7484;                    North         East     Units Scale Factor Converg.
 DR7484;SPC MD       -   150,370.482   414,973.518   MT  0.99995306   +0 06 30.7
 DR7484;SPC MD       -   493,340.49  1,361,458.95   sFT  0.99995306   +0 06 30.7
 DR7484;UTM  18      - 4,320,713.958   341,830.736   MT  0.99990806   -1 09 02.1
 DR7484
 DR7484!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7484!SPC MD       -   0.99999700  x   0.99995306  =   0.99995006
 DR7484!UTM  18      -   0.99999700  x   0.99990806  =   0.99990506
 DR7484
 DR7484_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4183020713(NAD 83)
 DR7484
 DR7484                          SUPERSEDED SURVEY CONTROL
 DR7484
 DR7484  NAD 83(2011)-  39 01 16.21209(N)    076 49 37.51892(W) AD(2010.00) A
 DR7484  ELLIP H (12/??/21)   19.150  (m)                       GP(2010.00) 4 1
 DR7484
 DR7484.Superseded values are not recommended for survey control.
 DR7484
 DR7484.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DR7484.See file dsdata.pdf to determine how the superseded data were derived.
 DR7484
 DR7484_STAMPING: UNKNOWN
 DR7484
 DR7484                          STATION DESCRIPTION
 DR7484
 DR7484'THIS MONUMENT IS ASSOCIATED WITH STATION 'GODN'
 DR7484'AND IS A PART OF THE NOAA CORS NETWORK (NCN). LATEST INFORMATION
 DR7484'INCLUDING POSITIONS AND VEOCITIES ARE AVAILABLE IN THE COORDINATE
 DR7484'AND LOG FILES ACCESSIBLE AT:
 DR7484'https://geodesy.noaa.gov/CORS/index.shtml
 DR7484'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7485 ***********************************************************************
 DR7485  CORS        -  This is a GPS Continuously Operating Reference Station.
 DR7485  DESIGNATION -  GGAO SOUTH DEEP D CORS ARP
 DR7485  CORS_ID     -  GODS
 DR7485  PID         -  DR7485
 DR7485  STATE/COUNTY-  MD/PRINCE GEORGES
 DR7485  COUNTRY     -  US
 DR7485  USGS QUAD   -  LAUREL (2016)
 DR7485
 DR7485                         *CURRENT SURVEY CONTROL
 DR7485  ______________________________________________________________________
 DR7485* NAD 83(2011) POSITION- 39 01 13.83268(N) 076 49 38.34336(W)   ADJUSTED
 DR7485* NAD 83(2011) ELLIP HT-    20.373 (meters)        (12/??/25)   ADJUSTED
 DR7485* NAD 83(2011) EPOCH   -  2010.00
 DR7485  ______________________________________________________________________
 DR7485  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 DR7485  NAD 83(2011) X  -  1,130,753.092 (meters)                     COMP
 DR7485  NAD 83(2011) Y  - -4,831,350.561 (meters)                     COMP
 DR7485  NAD 83(2011) Z  -  3,994,099.022 (meters)                     COMP
 DR7485
 DR7485.Formal positional accuracy estimates are not available for this CORS
 DR7485.because its coordinates were determined in part using modeled velocities.
 DR7485.A time-series residual plot is available that shows daily coordinate
 DR7485.variations relative to the published coordinates and modeled velocities.
 DR7485.Large residuals may indicate a potential error in the modeled velocities.
 DR7485
 DR7485.Residual plot at:
 DR7485.https://geodesy.noaa.gov/CORS/ncn_station_pages/index.html?stationID=GODS.
 DR7485
 DR7485.The coordinates were established by GPS observations
 DR7485.and adjusted by the National Geodetic Survey in December 2025.
 DR7485
 DR7485.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7485.been affixed to the stable North American Tectonic Plate. 
 DR7485
 DR7485.The coordinates are valid at the epoch date displayed above
 DR7485.which is a decimal equivalence of Year/Month/Day.
 DR7485
 DR7485.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DR7485.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DR7485.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DR7485.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DR7485.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DR7485.published epoch of 2010.00.
 DR7485
 DR7485.Additional information on MYCS is available at:
 DR7485.https://geodesy.noaa.gov/CORS/index.shtml
 DR7485
 DR7485.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7485.GEOID18 height accuracy estimate available here.
 DR7485
 DR7485.The PID for the CORS L1 Phase Center is DR7486.
 DR7485
 DR7485.Click photographs - Photos may exist for this station.
 DR7485
 DR7485.The XYZ, and position/ellipsoidal ht. are equivalent.
 DR7485
 DR7485.The ellipsoidal height was determined by GPS observations
 DR7485.and is referenced to NAD 83.
 DR7485
 DR7485. The following values were computed from the NAD 83(2011) position.
 DR7485
 DR7485;                    North         East     Units Scale Factor Converg.
 DR7485;SPC MD       -   150,297.073   414,953.825   MT  0.99995303   +0 06 30.2
 DR7485;SPC MD       -   493,099.65  1,361,394.34   sFT  0.99995303   +0 06 30.2
 DR7485;UTM  18      - 4,320,641.003   341,809.435   MT  0.99990814   -1 09 02.6
 DR7485
 DR7485!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7485!SPC MD       -   0.99999680  x   0.99995303  =   0.99994983
 DR7485!UTM  18      -   0.99999680  x   0.99990814  =   0.99990494
 DR7485
 DR7485_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4180920641(NAD 83)
 DR7485
 DR7485                          SUPERSEDED SURVEY CONTROL
 DR7485
 DR7485  NAD 83(2011)-  39 01 13.83218(N)    076 49 38.34351(W) AD(2010.00) c
 DR7485  ELLIP H (04/??/25)   20.388  (m)                       GP(2010.00) c c
 DR7485  NAD 83(2011)-  39 01 13.83237(N)    076 49 38.34323(W) AD(2010.00) c
 DR7485  ELLIP H (12/??/21)   20.385  (m)                       GP(2010.00) c c
 DR7485
 DR7485.Superseded values are not recommended for survey control.
 DR7485
 DR7485.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DR7485.See file dsdata.pdf to determine how the superseded data were derived.
 DR7485
 DR7485_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 DR7485
 DR7485                          STATION DESCRIPTION
 DR7485
 DR7485'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 DR7485'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 DR7485'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 DR7485'AND LOG FILES ACCESSIBLE AT:
 DR7485'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR7487 ***********************************************************************
 DR7487  CORS        -  This is a GPS Continuously Operating Reference Station.
 DR7487  DESIGNATION -  GGAO SOUTH DEEP D GRP
 DR7487  CORS_ID     -  GODS
 DR7487  PID         -  DR7487
 DR7487  STATE/COUNTY-  MD/PRINCE GEORGES
 DR7487  COUNTRY     -  US
 DR7487  USGS QUAD   -  LAUREL (2016)
 DR7487
 DR7487                         *CURRENT SURVEY CONTROL
 DR7487  ______________________________________________________________________
 DR7487* NAD 83(2011) POSITION- 39 01 13.83268(N) 076 49 38.34336(W)   ADJUSTED
 DR7487* NAD 83(2011) ELLIP HT-    20.365 (meters)        (12/??/25)   ADJUSTED
 DR7487* NAD 83(2011) EPOCH   -  2010.00
 DR7487  ______________________________________________________________________
 DR7487  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 DR7487  NAD 83(2011) X  -  1,130,753.091 (meters)                     COMP
 DR7487  NAD 83(2011) Y  - -4,831,350.555 (meters)                     COMP
 DR7487  NAD 83(2011) Z  -  3,994,099.016 (meters)                     COMP
 DR7487  LAPLACE CORR    -         -5.27  (seconds)                    DEFLEC18
 DR7487
 DR7487.Formal positional accuracy estimates are not available for this CORS
 DR7487.because its coordinates were determined in part using modeled velocities.
 DR7487.A time-series residual plot is available that shows daily coordinate
 DR7487.variations relative to the published coordinates and modeled velocities.
 DR7487.Large residuals may indicate a potential error in the modeled velocities.
 DR7487
 DR7487.Residual plot at:
 DR7487.https://geodesy.noaa.gov/CORS/ncn_station_pages/index.html?stationID=GODS.
 DR7487
 DR7487.The horizontal coordinates were established by GPS observations
 DR7487.and adjusted by the National Geodetic Survey in December 2025.
 DR7487
 DR7487.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR7487.been affixed to the stable North American Tectonic Plate. 
 DR7487
 DR7487.The horizontal coordinates are valid at the epoch date displayed above
 DR7487.which is a decimal equivalence of Year/Month/Day.
 DR7487
 DR7487.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DR7487.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DR7487.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DR7487.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DR7487.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DR7487.published epoch of 2010.00.
 DR7487
 DR7487.Additional information on MYCS is available at:
 DR7487.https://geodesy.noaa.gov/CORS/index.shtml
 DR7487
 DR7487.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR7487.GEOID18 height accuracy estimate available here.
 DR7487
 DR7487.Click photographs - Photos may exist for this station.
 DR7487
 DR7487.The XYZ, and position/ellipsoidal ht. are equivalent.
 DR7487
 DR7487.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR7487
 DR7487.The ellipsoidal height was determined by GPS observations
 DR7487.and is referenced to NAD 83.
 DR7487
 DR7487. The following values were computed from the NAD 83(2011) position.
 DR7487
 DR7487;                    North         East     Units Scale Factor Converg.
 DR7487;SPC MD       -   150,297.073   414,953.825   MT  0.99995303   +0 06 30.2
 DR7487;SPC MD       -   493,099.65  1,361,394.34   sFT  0.99995303   +0 06 30.2
 DR7487;UTM  18      - 4,320,641.003   341,809.435   MT  0.99990814   -1 09 02.6
 DR7487
 DR7487!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR7487!SPC MD       -   0.99999680  x   0.99995303  =   0.99994983
 DR7487!UTM  18      -   0.99999680  x   0.99990814  =   0.99990495
 DR7487
 DR7487_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4180920641(NAD 83)
 DR7487
 DR7487                          SUPERSEDED SURVEY CONTROL
 DR7487
 DR7487  NAD 83(2011)-  39 01 13.83218(N)    076 49 38.34351(W) AD(2010.00) A
 DR7487  ELLIP H (04/??/25)   20.379  (m)                       GP(2010.00) 4 1
 DR7487  NAD 83(2011)-  39 01 13.83237(N)    076 49 38.34323(W) AD(2010.00) A
 DR7487  ELLIP H (12/??/21)   20.376  (m)                       GP(2010.00) 4 1
 DR7487
 DR7487.Superseded values are not recommended for survey control.
 DR7487
 DR7487.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DR7487.See file dsdata.pdf to determine how the superseded data were derived.
 DR7487
 DR7487_STAMPING: UNKNOWN
 DR7487
 DR7487  HISTORY     - Date     Condition        Report By
 DR7487  HISTORY     - UNK      MONUMENTED       UNAVPB
 DR7487
 DR7487                          STATION DESCRIPTION
 DR7487
 DR7487'THIS MONUMENT IS ASSOCIATED WITH STATION 'GODS'
 DR7487'AND IS A PART OF THE NOAA CORS NETWORK (NCN). LATEST INFORMATION
 DR7487'INCLUDING POSITIONS AND VEOCITIES ARE AVAILABLE IN THE COORDINATE
 DR7487'AND LOG FILES ACCESSIBLE AT:
 DR7487'https://geodesy.noaa.gov/CORS/index.shtml
 DR7487'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AH5618 ***********************************************************************
 AH5618  DESIGNATION -  GGAO VLBI RM PIER A
 AH5618  PID         -  AH5618
 AH5618  STATE/COUNTY-  MD/PRINCE GEORGES
 AH5618  COUNTRY     -  US
 AH5618  USGS QUAD   -  LAUREL (2016)
 AH5618
 AH5618                         *CURRENT SURVEY CONTROL
 AH5618  ______________________________________________________________________
 AH5618* NAD 83(1986) POSITION- 39 01 19.     (N) 076 49 34.     (W)   SCALED
 AH5618* NAVD 88 ORTHO HEIGHT -    47.423 (meters)      155.59  (feet) ADJUSTED
 AH5618  ______________________________________________________________________
 AH5618  GEOID HEIGHT    -        -32.382 (meters)                     GEOID18
 AH5618  DYNAMIC HEIGHT  -         47.397 (meters)      155.50  (feet) COMP
 AH5618  MODELED GRAVITY -    980,090.6   (mgal)                       NAVD 88
 AH5618
 AH5618  VERT ORDER      -  SECOND    CLASS II
 AH5618
 AH5618.The horizontal coordinates were scaled from a map and have
 AH5618.an estimated accuracy of +/- 6 seconds.
 AH5618
 AH5618.The orthometric height was determined by differential leveling and
 AH5618.adjusted by the NATIONAL GEODETIC SURVEY
 AH5618.in April 1999.
 AH5618
 AH5618.Significant digits in the geoid height do not necessarily reflect accuracy.
 AH5618.GEOID18 height accuracy estimate available here.
 AH5618
 AH5618.Click photographs - Photos may exist for this station.
 AH5618
 AH5618.The dynamic height is computed by dividing the NAVD 88
 AH5618.geopotential number by the normal gravity value computed on the
 AH5618.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AH5618.degrees latitude (g = 980.6199 gals.).
 AH5618
 AH5618.The modeled gravity was interpolated from observed gravity values.
 AH5618
 AH5618;                    North         East    Units  Estimated Accuracy
 AH5618;SPC MD       -   150,460.      415,060.      MT  (+/- 180 meters Scaled)
 AH5618
 AH5618_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ419207(NAD 83)
 AH5618
 AH5618                          SUPERSEDED SURVEY CONTROL
 AH5618
 AH5618.No superseded survey control is available for this station.
 AH5618
 AH5618_MARKER: Z = SEE DESCRIPTION
 AH5618_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 AH5618_SP_SET: PILLAR
 AH5618_STAMPING: A
 AH5618_MARK LOGO: NONE
 AH5618_PROJECTION: FLUSH
 AH5618_MAGNETIC: N = NO MAGNETIC MATERIAL
 AH5618_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AH5618+STABILITY: SURFACE MOTION
 AH5618
 AH5618  HISTORY     - Date     Condition        Report By
 AH5618  HISTORY     - UNK      MONUMENTED       NONE
 AH5618  HISTORY     - 19980818 GOOD             NGS
 AH5618
 AH5618                          STATION DESCRIPTION
 AH5618
 AH5618'DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 AH5618'3.9 MILES (6.3 KM) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 AH5618'OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 1.9 KM (1.2 MI) SOUTHEASTERLY
 AH5618'ALONG SPRINGFIELD ROAD, THENCE 0.32 KM (0.20 MI) NORTHERLY ALONG THE
 AH5618'GODDARD OPTICAL RESEARCH FACILITY ENTRANCE ROAD TO A Y JUNCTION,
 AH5618'THENCE 0.05 KM (0.08 MI) NORTHERLY ALONG A ROAD TO BUILDING NUMBER
 AH5618'221, AND MARK ON RIGHT ON A SMALL  HILL,  A 0.254 METER DIAMETER,
 AH5618'STAINLESS STEEL PLATE WITH A 3/8 INCH THREADED BOLT IN CENTER, SET
 AH5618'FLUSH IN THE CENTER OF A 0.33 METER DIAMETER CONCRETE PILLAR THAT
 AH5618'PROJECTS 1.45 M (4.8 FT) ABOVE THE GROUND,  45.0 METERS (147.6 FT)
 AH5618'NORTHEAST OF THE ACCESS ROAD, 18.0 METERS (59.0 FT) NORTHEAST OF THE
 AH5618'NORTHEAST EDGE OF A CONCRETE PAD, 131.33 METERS (430.9 FT)
 AH5618'NORTH-NORTHEAST OF BM GGAO VLBI RM PIER B, AND  53.41 METERS (175.2
 AH5618'FT) EASTERLY OF BM GGAO VLBI RM PIER C. NOTE--THE PLATE IS EVEN ALL
 AH5618'OVER, A ROD WAS HELD USING A 2 CM PLUG ON THE PLATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AH5615 ***********************************************************************
 AH5615  DESIGNATION -  GGAO VLBI RM PIER B
 AH5615  PID         -  AH5615
 AH5615  STATE/COUNTY-  MD/PRINCE GEORGES
 AH5615  COUNTRY     -  US
 AH5615  USGS QUAD   -  LAUREL (2016)
 AH5615
 AH5615                         *CURRENT SURVEY CONTROL
 AH5615  ______________________________________________________________________
 AH5615* NAD 83(1986) POSITION- 39 01 16.     (N) 076 49 37.     (W)   SCALED
 AH5615* NAVD 88 ORTHO HEIGHT -    51.411 (meters)      168.67  (feet) ADJUSTED
 AH5615  ______________________________________________________________________
 AH5615  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 AH5615  DYNAMIC HEIGHT  -         51.383 (meters)      168.58  (feet) COMP
 AH5615  MODELED GRAVITY -    980,090.6   (mgal)                       NAVD 88
 AH5615
 AH5615  VERT ORDER      -  SECOND    CLASS II
 AH5615
 AH5615.The horizontal coordinates were scaled from a map and have
 AH5615.an estimated accuracy of +/- 6 seconds.
 AH5615
 AH5615.The orthometric height was determined by differential leveling and
 AH5615.adjusted by the NATIONAL GEODETIC SURVEY
 AH5615.in April 1999.
 AH5615
 AH5615.Significant digits in the geoid height do not necessarily reflect accuracy.
 AH5615.GEOID18 height accuracy estimate available here.
 AH5615
 AH5615.Click photographs - Photos may exist for this station.
 AH5615
 AH5615.The dynamic height is computed by dividing the NAVD 88
 AH5615.geopotential number by the normal gravity value computed on the
 AH5615.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AH5615.degrees latitude (g = 980.6199 gals.).
 AH5615
 AH5615.The modeled gravity was interpolated from observed gravity values.
 AH5615
 AH5615;                    North         East    Units  Estimated Accuracy
 AH5615;SPC MD       -   150,360.      414,990.      MT  (+/- 180 meters Scaled)
 AH5615
 AH5615_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ418207(NAD 83)
 AH5615
 AH5615                          SUPERSEDED SURVEY CONTROL
 AH5615
 AH5615.No superseded survey control is available for this station.
 AH5615
 AH5615_MARKER: Z = SEE DESCRIPTION
 AH5615_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 AH5615_SP_SET: PILLAR
 AH5615_STAMPING: B
 AH5615_MARK LOGO: NONE
 AH5615_PROJECTION: FLUSH
 AH5615_MAGNETIC: N = NO MAGNETIC MATERIAL
 AH5615_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AH5615+STABILITY: SURFACE MOTION
 AH5615
 AH5615  HISTORY     - Date     Condition        Report By
 AH5615  HISTORY     - UNK      MONUMENTED       NONE
 AH5615  HISTORY     - 19980818 GOOD             NGS
 AH5615
 AH5615                          STATION DESCRIPTION
 AH5615
 AH5615'DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 AH5615'3.9 MILES (6.3 KM) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 AH5615'OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 1.9 KM (1.2 MI) SOUTHEASTERLY
 AH5615'ALONG SPRINGFIELD ROAD, THENCE 0.24 KM (0.15 MI) NORTHERLY ALONG THE
 AH5615'GODDARD OPTICAL RESEARCH FACILITY ENTRANCE ROAD TO MARK ON RIGHT,  A
 AH5615'0.254 METER DIAMETER, STAINLESS STEEL PLATE WITH A 3/8 INCH 11
 AH5615'THREADED BOLT IN CENTER, SET FLUSH IN THE CENTER OF A 0.33 METER
 AH5615'DIAMETER CONCRETE PILLAR THAT PROJECTS 1.45 M (4.8 FT) ABOVE THE
 AH5615'GROUND,  5.0 METERS (16.4 FT) EAST OF THE ENTRANCE ROAD, 15.47 METERS
 AH5615'(50.8 FT) SOUTH-SOUTHWEST OF BM 20428, 32.01 METERS (105.0 FT)
 AH5615'NORTH-NORTHEAST OF BM NORTH GEOS PIER, 40.02 M (131.3 FT) NORTHEAST OF
 AH5615'BM GODDARD 2 1966, AND 97.44 METERS (319.7 FT) SOUTHERNLY OF GGAO VLBI
 AH5615'RM PIER C. NOTE--THE PLATE IS EVEN ALL OVER, A ROD WAS HELD USING A 2
 AH5615'CM PLUG ON THE PLATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AH5617 ***********************************************************************
 AH5617  DESIGNATION -  GGAO VLBI RM PIER C
 AH5617  PID         -  AH5617
 AH5617  STATE/COUNTY-  MD/PRINCE GEORGES
 AH5617  COUNTRY     -  US
 AH5617  USGS QUAD   -  LAUREL (2016)
 AH5617
 AH5617                         *CURRENT SURVEY CONTROL
 AH5617  ______________________________________________________________________
 AH5617* NAD 83(1986) POSITION- 39 01 12.     (N) 076 49 32.     (W)   SCALED
 AH5617* NAVD 88 ORTHO HEIGHT -    46.313 (meters)      151.95  (feet) ADJUSTED
 AH5617  ______________________________________________________________________
 AH5617  GEOID HEIGHT    -        -32.385 (meters)                     GEOID18
 AH5617  DYNAMIC HEIGHT  -         46.288 (meters)      151.86  (feet) COMP
 AH5617  MODELED GRAVITY -    980,090.4   (mgal)                       NAVD 88
 AH5617
 AH5617  VERT ORDER      -  SECOND    CLASS II
 AH5617
 AH5617.The horizontal coordinates were scaled from a map and have
 AH5617.an estimated accuracy of +/- 6 seconds.
 AH5617
 AH5617.The orthometric height was determined by differential leveling and
 AH5617.adjusted by the NATIONAL GEODETIC SURVEY
 AH5617.in April 1999.
 AH5617
 AH5617.Significant digits in the geoid height do not necessarily reflect accuracy.
 AH5617.GEOID18 height accuracy estimate available here.
 AH5617
 AH5617.Click photographs - Photos may exist for this station.
 AH5617
 AH5617.The dynamic height is computed by dividing the NAVD 88
 AH5617.geopotential number by the normal gravity value computed on the
 AH5617.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AH5617.degrees latitude (g = 980.6199 gals.).
 AH5617
 AH5617.The modeled gravity was interpolated from observed gravity values.
 AH5617
 AH5617;                    North         East    Units  Estimated Accuracy
 AH5617;SPC MD       -   150,240.      415,110.      MT  (+/- 180 meters Scaled)
 AH5617
 AH5617_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ419205(NAD 83)
 AH5617
 AH5617                          SUPERSEDED SURVEY CONTROL
 AH5617
 AH5617.No superseded survey control is available for this station.
 AH5617
 AH5617_MARKER: Z = SEE DESCRIPTION
 AH5617_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 AH5617_SP_SET: PILLAR
 AH5617_STAMPING: C
 AH5617_MARK LOGO: NONE
 AH5617_PROJECTION: FLUSH
 AH5617_MAGNETIC: N = NO MAGNETIC MATERIAL
 AH5617_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AH5617+STABILITY: SURFACE MOTION
 AH5617
 AH5617  HISTORY     - Date     Condition        Report By
 AH5617  HISTORY     - UNK      MONUMENTED       NONE
 AH5617  HISTORY     - 19980818 GOOD             NGS
 AH5617
 AH5617                          STATION DESCRIPTION
 AH5617
 AH5617'DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 AH5617'3.9 MILES (6.3 KM) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 AH5617'OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 1.9 KM (1.2 MI) SOUTHEASTERLY
 AH5617'ALONG SPRINGFIELD ROAD, THENCE 0.32 KM (0.20 MI) NORTHERLY ALONG THE
 AH5617'GODDARD OPTICAL RESEARCH FACILITY ENTRANCE ROAD TO A Y JUNCTION,
 AH5617'THENCE 0.05 KM (0.08 MI) NORTHERLY ALONG A ROAD TO THE MARK ON LEFT,
 AH5617'ACROSS THE ROAD FROM BUILDING NUMBER 221, A 0.254 METER DIAMETER,
 AH5617'STAINLESS STEEL PLATE WITH A 3/8 INCH 11 THREADED BOLT IN CENTER, SET
 AH5617'FLUSH IN THE CENTER OF A 0.33 METER DIAMETER CONCRETE PILLAR THAT
 AH5617'PROJECTS 1.45 M (4.8 FT) ABOVE THE GROUND,  53.41 METERS (175.2 FT)
 AH5617'WESTERLY OF BM GGAO VLBI RM PIER A, 97.44 METERS (319.7 FT)
 AH5617'NORTH-NORTHWEST OF BM GGAO VLBI RM PIER B, AND 44.03 METERS (144.5 FT)
 AH5617'NORTH-NORTHWEST OF BM GPS JPL 4005. NOTE--THE PLATE IS EVEN ALL OVER,
 AH5617'A ROD WAS HELD USING A 2 CM PLUG ON THE PLATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8810 ***********************************************************************
 HV8810  DESIGNATION -  GIANT
 HV8810  PID         -  HV8810
 HV8810  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8810  COUNTRY     -  US
 HV8810  USGS QUAD   -  ANACOSTIA (2016)
 HV8810
 HV8810                         *CURRENT SURVEY CONTROL
 HV8810  ______________________________________________________________________
 HV8810* NAD 83(2011) POSITION- 38 45 30.06886(N) 076 59 37.78746(W)   ADJUSTED
 HV8810* NAD 83(2011) ELLIP HT-   -17.872 (meters)        (06/27/12)   ADJUSTED
 HV8810* NAD 83(2011) EPOCH   -  2010.00
 HV8810* NAVD 88 ORTHO HEIGHT -    14.8   (meters)       49.    (feet) VERTCON3
 HV8810  ______________________________________________________________________
 HV8810  GEOID HEIGHT    -        -32.396 (meters)                     GEOID18
 HV8810  NAD 83(2011) X  -  1,120,812.906 (meters)                     COMP
 HV8810  NAD 83(2011) Y  - -4,852,389.943 (meters)                     COMP
 HV8810  NAD 83(2011) Z  -  3,971,422.531 (meters)                     COMP
 HV8810  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 HV8810
 HV8810  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8810  Standards:
 HV8810         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8810            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8810  -------------------------------------------------------------------
 HV8810  NETWORK    1.22   2.67           0.43   0.54   1.36     -0.29840975
 HV8810  -------------------------------------------------------------------
 HV8810  Click here for local accuracies and other accuracy information.
 HV8810
 HV8810.The horizontal coordinates were established by GPS observations
 HV8810.and adjusted by the National Geodetic Survey in June 2012.
 HV8810
 HV8810.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8810.been affixed to the stable North American tectonic plate. See 
 HV8810.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8810
 HV8810.The horizontal coordinates are valid at the epoch date displayed above
 HV8810.which is a decimal equivalence of Year/Month/Day.
 HV8810
 HV8810.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8810.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8810
 HV8810.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8810.GEOID18 height accuracy estimate available here.
 HV8810
 HV8810.Click photographs - Photos may exist for this station.
 HV8810
 HV8810.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8810
 HV8810.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8810
 HV8810.The ellipsoidal height was determined by GPS observations
 HV8810.and is referenced to NAD 83.
 HV8810
 HV8810. The following values were computed from the NAD 83(2011) position.
 HV8810
 HV8810;                    North         East     Units Scale Factor Converg.
 HV8810;SPC MD       -   121,181.491   400,536.285   MT  0.99995194   +0 00 13.9
 HV8810;SPC MD       -   397,576.28  1,314,092.80   sFT  0.99995194   +0 00 13.9
 HV8810;SPC VA N     - 2,122,250.121 3,630,904.504   MT  0.99995140   +0 56 24.1
 HV8810;SPC VA N     - 6,962,748.94 11,912,392.53   sFT  0.99995140   +0 56 24.1
 HV8810;UTM  18      - 4,291,848.758   326,757.422   MT  0.99996959   -1 14 54.7
 HV8810
 HV8810!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8810!SPC MD       -   1.00000280  x   0.99995194  =   0.99995474
 HV8810!SPC VA N     -   1.00000280  x   0.99995140  =   0.99995420
 HV8810!UTM  18      -   1.00000280  x   0.99996959  =   0.99997239
 HV8810
 HV8810_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2675791848(NAD 83)
 HV8810
 HV8810                          SUPERSEDED SURVEY CONTROL
 HV8810
 HV8810  NAD 83(2007)-  38 45 30.07078(N)    076 59 37.79782(W) AD(2002.00) 0
 HV8810  ELLIP H (02/10/07)  -17.841  (m)                       GP(2002.00)    
 HV8810  ELLIP H (08/30/02)  -17.598  (m)                       GP(       ) 4 2
 HV8810  NAD 83(1993)-  38 45 30.07037(N)    076 59 37.78616(W) AD(       ) 2
 HV8810  ELLIP H (11/14/94)  -17.691  (m)                       GP(       ) 4 2
 HV8810  NAD 83(1991)-  38 45 30.06936(N)    076 59 37.78643(W) AD(       ) 2
 HV8810  ELLIP H (01/27/92)  -17.660  (m)                       GP(       ) 4 1
 HV8810  NAD 83(1986)-  38 45 30.06965(N)    076 59 37.80003(W) AD(       ) 2
 HV8810  NGVD 29 (07/06/90)   15.1    (m)  RAPSU86  model used  GPS OBS        
 HV8810
 HV8810.Superseded values are not recommended for survey control.
 HV8810
 HV8810.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8810.See file dsdata.pdf to determine how the superseded data were derived.
 HV8810
 HV8810_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8810_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8810_STAMPING: GIANT 1989
 HV8810_MARK LOGO: MDSHA
 HV8810_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8810_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8810+STABILITY: SURFACE MOTION
 HV8810_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8810+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HV8810
 HV8810  HISTORY     - Date     Condition        Report By
 HV8810  HISTORY     - 1989     MONUMENTED       MDSHA
 HV8810
 HV8810                          STATION DESCRIPTION
 HV8810
 HV8810'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1989
 HV8810'THE STATION IS LOCATED ABOUT 7.90 KM (4.90 MI) SOUTH OF OXON HILL,
 HV8810'2.02 KM (1.25 MI) NORTH OF SILESIA ON THE WEST SIDE OF STATE HIGHWAY
 HV8810'210.  OWNERSHIP--GIANT FOOD INCORPORATED.
 HV8810'TO REACH THE STATION FROM THE STATE HIGHWAY 210 BRIDGE OVER INTERSTATE
 HV8810'HIGHWAY 95 (CAPITOL BELTWAY) WHICH IS IN THE SOUTH EDGE OF FOREST
 HV8810'HEIGHTS, GO SOUTH ON STATE HIGHWAY 210 FOR 5.16 KM (3.20 MI) TO THE
 HV8810'STATION ON THE RIGHT IN A GRASS STRIP BETWEEN STATE HIGHWAY 210 AND
 HV8810'THE EMPLOYEES PARKING AREA IN THE REAR OF THE LIVINGSTON SQUARE
 HV8810'SHOPPING MALL.
 HV8810'THE STATION MARK IS A MARYLAND STATE HIGHWAY ADMINISTRATION DISK SET
 HV8810'IN THE TOP OF A 0.25 M (0.8 FT) ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HV8810'WITH THE SURFACE OF THE GROUND.  IT IS 0.32 KM (0.20 MI) NORTH OF THE
 HV8810'INTERSECTION OF STATE HIGHWAY 210 AND OLD FORT ROAD, 99.88 M
 HV8810'(327.7 FT) NORTHEAST OF THE SOUTHEAST CORNER OF THE GIANT FOOD AND
 HV8810'DRUG STORE ON THE SOUTH END OF THE SHOPPING MALL, 43.65 M (143.2 FT)
 HV8810'NORTHEAST OF A FIRE HYDRANT, 23.47 M (77.0 FT) EAST OF THE EAST
 HV8810'CONCRETE CURB OF THE PARKING AREA, 67.67 M (222.0 FT) SOUTHEAST OF THE
 HV8810'NORTHEAST CORNER OF A BUILDING LEASED BY THE HOUSE OF FINE FABRICS AND
 HV8810'16.0 M (52.5 FT) WEST OF THE WEST EDGE OF THE PAVED SHOULDER OF THE
 HV8810'SOUTHBOUND LANE OF STATE HIGHWAY 210.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5201 ***********************************************************************
 JV5201  DESIGNATION -  GIB
 JV5201  PID         -  JV5201
 JV5201  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5201  COUNTRY     -  US
 JV5201  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5201
 JV5201                         *CURRENT SURVEY CONTROL
 JV5201  ______________________________________________________________________
 JV5201* NAD 83(1991) POSITION- 39 04 32.34340(N) 076 26 37.61953(W)   ADJUSTED
 JV5201* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5201  ______________________________________________________________________
 JV5201  GEOID HEIGHT    -        -33.266 (meters)                     GEOID18
 JV5201  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 JV5201  HORZ ORDER      -  SECOND
 JV5201
 JV5201.The horizontal coordinates were established by classical geodetic methods
 JV5201.and adjusted by the National Geodetic Survey in January 1992.
 JV5201
 JV5201.The orthometric height was scaled from a topographic map.
 JV5201
 JV5201.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5201.GEOID18 height accuracy estimate available here.
 JV5201
 JV5201.Click photographs - Photos may exist for this station.
 JV5201
 JV5201.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5201
 JV5201. The following values were computed from the NAD 83(1991) position.
 JV5201
 JV5201;                    North         East     Units Scale Factor Converg.
 JV5201;SPC MD       -   156,550.927   448,129.290   MT  0.99995591   +0 20 56.8
 JV5201;SPC MD       -   513,617.50  1,470,237.51   sFT  0.99995591   +0 20 56.8
 JV5201;UTM  18      - 4,326,163.688   375,110.775   MT  0.99979205   -0 54 36.7
 JV5201
 JV5201!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5201!SPC MD       -   1.00000526  x   0.99995591  =   0.99996117
 JV5201!UTM  18      -   1.00000526  x   0.99979205  =   0.99979731
 JV5201
 JV5201:                Primary Azimuth Mark                     Grid Az
 JV5201:SPC MD       -  DOBBINS ISLAND HOUSE RED CHIM            280 41 25.2
 JV5201:UTM  18      -  DOBBINS ISLAND HOUSE RED CHIM            281 56 58.7
 JV5201
 JV5201_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7511026163(NAD 83)
 JV5201
 JV5201|---------------------------------------------------------------------|
 JV5201| PID    Reference Object                     Distance      Geod. Az  |
 JV5201|                                                           dddmmss.s |
 JV5201| CA9452 GIB RM 1                             15.718 METERS 07959     |
 JV5201| CA9453 GIB RM 2                             25.650 METERS 07959     |
 JV5201| JV5180 YELLOW HOUSE FRONT CHIMNEY          APPROX. 4.4 KM 2533542.6 |
 JV5201| JV5214 DOBBINS ISLAND HOUSE RED CHIM       APPROX. 1.4 KM 2810222.0 |
 JV5201|---------------------------------------------------------------------|
 JV5201
 JV5201                          SUPERSEDED SURVEY CONTROL
 JV5201
 JV5201  NAD 83(1986)-  39 04 32.33918(N)    076 26 37.63030(W) AD(       ) 2
 JV5201  NAD 27      -  39 04 31.94000(N)    076 26 38.77200(W) AD(       ) 2
 JV5201
 JV5201.Superseded values are not recommended for survey control.
 JV5201
 JV5201.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5201.See file dsdata.pdf to determine how the superseded data were derived.
 JV5201
 JV5201_MARKER: DS = TRIANGULATION STATION DISK
 JV5201_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5201_STAMPING: GIB 1933
 JV5201_MARK LOGO: CGS
 JV5201_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5201+STABILITY: SURFACE MOTION
 JV5201
 JV5201  HISTORY     - Date     Condition        Report By
 JV5201  HISTORY     - 1933     MONUMENTED       CGS
 JV5201  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5201
 JV5201                          STATION DESCRIPTION
 JV5201
 JV5201'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5201'ON W SHORE GIBSON ISLAND, MAGOTHY RIVER, ABOUT 1-1/4 MILES FROM
 JV5201'MOUNTAIN POINT.  STATION IS 15 FEET FROM EDGE OF BLUFF 20 FEET
 JV5201'HIGH, AND ABOUT 25 FEET N OF CENTER OF BLUFF.
 JV5201'
 JV5201'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5201'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5201'
 JV5201'STATION, REFERENCE MARK NO.1, AND REFERENCE MARK NO.2 ARE IN
 JV5201'RANGE.  ANOTHER REFERENCE IS N TANGENT DOBBINS ISLAND, BEARING S 66
 JV5201'DEG 30 MIN E, 7/8 OF A MILE.  STATION AND REFERENCE MARKS
 JV5201'ARE SET FLUSH WITH THE SURFACE OF THE GROUND.  ANOTHER REFERENCE
 JV5201'IS ULMSTEAD POINT, 2 MILES, N 81 DEG E.
 JV5201
 JV5201                          STATION RECOVERY (1961)
 JV5201
 JV5201'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5201'STATION AND R.M.1 AND 2 COULD NOT BE FOUND.  THE BLUFF AT THIS
 JV5201'POINT HAS WASHED AWAY CONSIDERABLY OVER THE PAST YEARS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7388 ***********************************************************************
 HV7388  DESIGNATION -  GIBBONS
 HV7388  PID         -  HV7388
 HV7388  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7388  COUNTRY     -  US
 HV7388  USGS QUAD   -  BRANDYWINE (2016)
 HV7388
 HV7388                         *CURRENT SURVEY CONTROL
 HV7388  ______________________________________________________________________
 HV7388* NAD 83(1993) POSITION- 38 41 10.10669(N) 076 48 48.08968(W)   ADJUSTED
 HV7388* NAVD 88 ORTHO HEIGHT -    68.7   (meters)      225.    (feet) VERTCON3
 HV7388  ______________________________________________________________________
 HV7388  GEOID HEIGHT    -        -33.038 (meters)                     GEOID18
 HV7388  LAPLACE CORR    -         -5.94  (seconds)                    DEFLEC18
 HV7388  HORZ ORDER      -  FIRST
 HV7388
 HV7388.The horizontal coordinates were established by classical geodetic methods
 HV7388.and adjusted by the National Geodetic Survey in November 1994.
 HV7388
 HV7388.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7388.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7388
 HV7388.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7388.GEOID18 height accuracy estimate available here.
 HV7388
 HV7388.Click photographs - Photos may exist for this station.
 HV7388
 HV7388.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7388
 HV7388. The following values were computed from the NAD 83(1993) position.
 HV7388
 HV7388;                    North         East     Units Scale Factor Converg.
 HV7388;SPC MD       -   113,182.210   416,238.552   MT  0.99995530   +0 07 01.7
 HV7388;SPC MD       -   371,331.97  1,365,609.32   sFT  0.99995530   +0 07 01.7
 HV7388;UTM  18      - 4,283,508.543   342,280.970   MT  0.99990633   -1 08 01.2
 HV7388
 HV7388!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7388!SPC MD       -   0.99999441  x   0.99995530  =   0.99994971
 HV7388!UTM  18      -   0.99999441  x   0.99990633  =   0.99990074
 HV7388
 HV7388:                Primary Azimuth Mark                     Grid Az
 HV7388:SPC MD       -  GIBBONS AZ MK                            220 29 55.5
 HV7388:UTM  18      -  GIBBONS AZ MK                            221 44 58.4
 HV7388
 HV7388_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4228083508(NAD 83)
 HV7388
 HV7388|---------------------------------------------------------------------|
 HV7388| PID    Reference Object                     Distance      Geod. Az  |
 HV7388|                                                           dddmmss.s |
 HV7388| HV7367 VORTAC NOTTINGHAM OTT               APPROX. 6.4 KM 0694950.9 |
 HV7388| CX2796 GIBBONS AZ MK                                      2203657.2 |
 HV7388| HV7394 BRANDYWINE USAF TANK                APPROX. 2.8 KM 2512438.1 |
 HV7388| CX2797 GIBBONS RM 1                         30.239 METERS 26327     |
 HV7388| HV7395 BRANDYWINE STATE FOREST LOT         APPROX. 2.7 KM 2970620.3 |
 HV7388| CX2798 GIBBONS RM 2                         33.583 METERS 33711     |
 HV7388| HV7381 CHELTENHAM REFORM SCHOOL TANK       APPROX. 5.9 KM 3372204.4 |
 HV7388|---------------------------------------------------------------------|
 HV7388
 HV7388                          SUPERSEDED SURVEY CONTROL
 HV7388
 HV7388  NAD 83(1991)-  38 41 10.10640(N)    076 48 48.08996(W) AD(       ) 1
 HV7388  NAD 83(1986)-  38 41 10.10473(N)    076 48 48.10495(W) AD(       ) 1
 HV7388  NAD 27      -  38 41 09.68543(N)    076 48 49.21454(W) AD(       ) 1
 HV7388  NGVD 29 (07/19/86)   68.9    (m)          226.     (f) VERT ANG       
 HV7388
 HV7388.Superseded values are not recommended for survey control.
 HV7388
 HV7388.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7388.See file dsdata.pdf to determine how the superseded data were derived.
 HV7388
 HV7388_MARKER: DS = TRIANGULATION STATION DISK
 HV7388_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7388_STAMPING: GIBBONS 1970
 HV7388_MARK LOGO: CGS
 HV7388_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7388+STABILITY: SURFACE MOTION
 HV7388
 HV7388  HISTORY     - Date     Condition        Report By
 HV7388  HISTORY     - 1970     MONUMENTED       NGS
 HV7388
 HV7388                          STATION DESCRIPTION
 HV7388
 HV7388'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7388'THE STATION IS ABOUT 2-3/4 MILES NORTHWEST OF BADEN AND 2-1/2 MILES
 HV7388'EAST OF BRANDYWINE, ON THE EAST SIDE OF GIBBONS CHURCH ROAD AND ON
 HV7388'PROPERTY OF THE GRANITE RESEARCH INDUSTRIES INCORPORATION, THE
 HV7388'OFFICE AND PLANT IS ABOUT 0.2 MILE EAST OF STATION.
 HV7388'
 HV7388'TO REACH THE STATION FROM THE POST OFFICE IN BRANDYWINE, GO EAST ON
 HV7388'STATE HIGHWAY 301 FOR 1.2 MILES TO A FORK.  TAKE THE RIGHT FORK AND
 HV7388'CONTINUE EASTERLY ON HIGHWAY 301 FOR 1.25 MILES TO THE JUNCTION
 HV7388'WITH GIBBONS CHURCH ROAD ON THE LEFT AND THE AZIMUTH MARK ON THE
 HV7388'RIGHT.  TURN LEFT AND GO NORTH ON GIBBONS CHURCH ROAD FOR 0.2 MILE
 HV7388'TO THE STATION ON THE RIGHT.
 HV7388'
 HV7388'STATION MARK IS A STANDARD DISK, STAMPED GIBBONS 1970, SET IN THE TOP
 HV7388'OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS 2
 HV7388'INCHES ABOVE THE GROUND.  IT IS 194.0 FEET SOUTH OF THE CENTERLINE
 HV7388'OF A DRIVEWAY, 133.0 FEET SOUTH OF POWER LINE NUMBER 5, 51.0 FEET
 HV7388'EAST OF THE CENTERLINE OF GIBBONS CHURCH ROAD AND 5.6 FEET
 HV7388'NORTHWEST OF A WITNESS POST.  THE UNDERGROUND MARK IS 40 INCHES
 HV7388'BELOW THE GROUND SURFACE.
 HV7388'
 HV7388'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED GIBBONS NO 1 1970, SET
 HV7388'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7388'PROJECTS 2 INCHES ABOVE THE GROUND.  IT IS 31.0 FEET WEST OF THE
 HV7388'CENTERLINE OF GIBBONS CHURCH ROAD, 2.6 FEET NORTH OF POWER LINE
 HV7388'NUMBER 4 AND ABOUT THE SAME ELEVATION AS THE STATION.
 HV7388'
 HV7388'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED GIBBONS NO 2 1970, SET
 HV7388'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7388'PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 62.0 FEET SOUTH OF A
 HV7388'POWER LINE GUY POLE, 28.0 FEET WEST OF THE CENTERLINE OF GIBBONS
 HV7388'CHURCH ROAD AND ABOUT THE SAME ELEVATION AS THE STATION.
 HV7388'
 HV7388'AZIMUTH MARK IS A STANDARD DISK, STAMPED GIBBONS 1970, SET IN THE
 HV7388'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS
 HV7388'4 INCHES ABOVE THE GROUND.  IT IS 28.5 FEET SOUTH OF THE CENTERLINE
 HV7388'OF STATE HIGHWAY 381, 1.8 FEET NORTHEAST OF POWER LINE POLE NUMBER
 HV7388'99 AND 1.6 FEET WEST OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6337 ***********************************************************************
 JV6337  DESIGNATION -  GIBSON
 JV6337  PID         -  JV6337
 JV6337  STATE/COUNTY-  MD/HARFORD
 JV6337  COUNTRY     -  US
 JV6337  USGS QUAD   -  BEL AIR (2016)
 JV6337
 JV6337                         *CURRENT SURVEY CONTROL
 JV6337  ______________________________________________________________________
 JV6337* NAD 83(2011) POSITION- 39 36 02.57965(N) 076 18 54.45143(W)   ADJUSTED
 JV6337* NAD 83(2011) ELLIP HT-   105.848 (meters)        (06/27/12)   ADJUSTED
 JV6337* NAD 83(2011) EPOCH   -  2010.00
 JV6337* NAVD 88 ORTHO HEIGHT -   138.619 (meters)      454.79  (feet) ADJUSTED
 JV6337  ______________________________________________________________________
 JV6337  GEOID HEIGHT    -        -32.742 (meters)                     GEOID18
 JV6337  NAD 83(2011) X  -  1,164,257.894 (meters)                     COMP
 JV6337  NAD 83(2011) Y  - -4,781,463.123 (meters)                     COMP
 JV6337  NAD 83(2011) Z  -  4,043,993.163 (meters)                     COMP
 JV6337  LAPLACE CORR    -         -2.35  (seconds)                    DEFLEC18
 JV6337  DYNAMIC HEIGHT  -        138.550 (meters)      454.56  (feet) COMP
 JV6337  MODELED GRAVITY -    980,123.0   (mgal)                       NAVD 88
 JV6337
 JV6337  VERT ORDER      -  FIRST     CLASS II
 JV6337
 JV6337  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6337  Standards:
 JV6337         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6337            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6337  -------------------------------------------------------------------
 JV6337  NETWORK    1.90   4.70           0.85   0.61   2.40      0.50487537
 JV6337  -------------------------------------------------------------------
 JV6337  Click here for local accuracies and other accuracy information.
 JV6337
 JV6337.The horizontal coordinates were established by GPS observations
 JV6337.and adjusted by the National Geodetic Survey in June 2012.
 JV6337
 JV6337.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6337.been affixed to the stable North American tectonic plate. See 
 JV6337.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6337
 JV6337.The horizontal coordinates are valid at the epoch date displayed above
 JV6337.which is a decimal equivalence of Year/Month/Day.
 JV6337
 JV6337.The orthometric height was determined by differential leveling and
 JV6337.adjusted by the NATIONAL GEODETIC SURVEY
 JV6337.in June 1991.
 JV6337
 JV6337.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6337.GEOID18 height accuracy estimate available here.
 JV6337
 JV6337.Click photographs - Photos may exist for this station.
 JV6337
 JV6337.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6337
 JV6337.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6337
 JV6337.The ellipsoidal height was determined by GPS observations
 JV6337.and is referenced to NAD 83.
 JV6337
 JV6337.The dynamic height is computed by dividing the NAVD 88
 JV6337.geopotential number by the normal gravity value computed on the
 JV6337.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6337.degrees latitude (g = 980.6199 gals.).
 JV6337
 JV6337.The modeled gravity was interpolated from observed gravity values.
 JV6337
 JV6337. The following values were computed from the NAD 83(2011) position.
 JV6337
 JV6337;                    North         East     Units Scale Factor Converg.
 JV6337;SPC MD       -   214,917.945   458,824.499   MT  1.00002984   +0 25 47.5
 JV6337;SPC MD       -   705,109.96  1,505,326.71   sFT  1.00002984   +0 25 47.5
 JV6337;UTM  18      - 4,384,268.289   387,088.304   MT  0.99975696   -0 50 18.2
 JV6337
 JV6337!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6337!SPC MD       -   0.99998339  x   1.00002984  =   1.00001323
 JV6337!UTM  18      -   0.99998339  x   0.99975696  =   0.99974036
 JV6337
 JV6337:                Primary Azimuth Mark                     Grid Az
 JV6337:SPC MD       -  GIBSON AZ MK                             219 35 26.3
 JV6337:UTM  18      -  GIBSON AZ MK                             220 51 32.0
 JV6337
 JV6337_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8708884268(NAD 83)
 JV6337
 JV6337|---------------------------------------------------------------------|
 JV6337| PID    Reference Object                     Distance      Geod. Az  |
 JV6337|                                                           dddmmss.s |
 JV6337| JV6338 GIBSON AZ MK                        APPROX. 0.6 KM 2200113.8 |
 JV6337|---------------------------------------------------------------------|
 JV6337
 JV6337                          SUPERSEDED SURVEY CONTROL
 JV6337
 JV6337  NAD 83(2007)-  39 36 02.57984(N)    076 18 54.45218(W) AD(2002.00) 0
 JV6337  ELLIP H (02/10/07)  105.871  (m)                       GP(2002.00)    
 JV6337  ELLIP H (09/18/02)  105.890  (m)                       GP(       ) 4 2
 JV6337  NAD 83(1991)-  39 36 02.57963(N)    076 18 54.45192(W) AD(       ) 1
 JV6337  ELLIP H (01/27/92)  105.886  (m)                       GP(       ) 4 1
 JV6337  NAD 83(1986)-  39 36 02.57267(N)    076 18 54.45854(W) AD(       ) 1
 JV6337  NGVD 29             138.87   (m)          455.6    (f) LEVELING    3  
 JV6337
 JV6337.Superseded values are not recommended for survey control.
 JV6337
 JV6337.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6337.See file dsdata.pdf to determine how the superseded data were derived.
 JV6337
 JV6337_MARKER: DD = SURVEY DISK
 JV6337_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6337_STAMPING: 57 GIBSON 1989
 JV6337_MARK LOGO: MD-025
 JV6337_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6337_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6337+STABILITY: SURFACE MOTION
 JV6337_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6337+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2009
 JV6337
 JV6337  HISTORY     - Date     Condition        Report By
 JV6337  HISTORY     - 1989     MONUMENTED       RDA
 JV6337  HISTORY     - 20090615 GOOD             MDSHA
 JV6337
 JV6337                          STATION DESCRIPTION
 JV6337
 JV6337'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6337'THE STATION IS LOCATED IN NORTHEASTERN HARFORD COUNTY MARYLAND ABOUT
 JV6337'2 MILES NORTHEAST OF THE VILLAGE OF HICKORY.  TO REACH THE STATION
 JV6337'FROM THE INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 543 IN
 JV6337'HICKORY PROCEED NORTHEAST ALONG HIGHWAY 1 2.12 MILES TO THE STATION
 JV6337'ON THE RIGHT.  THE STATION IS A STANDARD HARFORD COUNTY STATION DISC
 JV6337'SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 57 GIBSON 1989.
 JV6337'THE STATION IS 98.8 FEET NORTHEAST OF G AND E POWER POLE NUMBER
 JV6337'51728, 29.0 FEET SOUTHEAST OF THE CENTERLINE OF HIGHWAY 1, AND 47.9
 JV6337'FEET SOUTHWEST OF G AND E POWER POLE NUMBER 51729.
 JV6337
 JV6337                          STATION RECOVERY (2009)
 JV6337
 JV6337'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV6337'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6338 ***********************************************************************
 JV6338  DESIGNATION -  GIBSON AZ MK
 JV6338  PID         -  JV6338
 JV6338  STATE/COUNTY-  MD/HARFORD
 JV6338  COUNTRY     -  US
 JV6338  USGS QUAD   -  BEL AIR (2016)
 JV6338
 JV6338                         *CURRENT SURVEY CONTROL
 JV6338  ______________________________________________________________________
 JV6338* NAD 83(2011) POSITION- 39 35 48.61213(N) 076 19 09.61165(W)   ADJUSTED
 JV6338* NAD 83(2011) ELLIP HT-   112.274 (meters)        (06/27/12)   ADJUSTED
 JV6338* NAD 83(2011) EPOCH   -  2010.00
 JV6338* NAVD 88 ORTHO HEIGHT -   145.022 (meters)      475.79  (feet) ADJUSTED
 JV6338  ______________________________________________________________________
 JV6338  GEOID HEIGHT    -        -32.738 (meters)                     GEOID18
 JV6338  NAD 83(2011) X  -  1,163,972.571 (meters)                     COMP
 JV6338  NAD 83(2011) Y  - -4,781,820.283 (meters)                     COMP
 JV6338  NAD 83(2011) Z  -  4,043,665.333 (meters)                     COMP
 JV6338  LAPLACE CORR    -         -2.41  (seconds)                    DEFLEC18
 JV6338  DYNAMIC HEIGHT  -        144.949 (meters)      475.55  (feet) COMP
 JV6338  MODELED GRAVITY -    980,122.4   (mgal)                       NAVD 88
 JV6338
 JV6338  VERT ORDER      -  FIRST     CLASS II
 JV6338
 JV6338  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6338  Standards:
 JV6338         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6338            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6338  -------------------------------------------------------------------
 JV6338  NETWORK    1.93   4.84           0.86   0.63   2.47      0.49896590
 JV6338  -------------------------------------------------------------------
 JV6338  Click here for local accuracies and other accuracy information.
 JV6338
 JV6338.The horizontal coordinates were established by GPS observations
 JV6338.and adjusted by the National Geodetic Survey in June 2012.
 JV6338
 JV6338.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6338.been affixed to the stable North American tectonic plate. See 
 JV6338.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6338
 JV6338.The horizontal coordinates are valid at the epoch date displayed above
 JV6338.which is a decimal equivalence of Year/Month/Day.
 JV6338
 JV6338.The orthometric height was determined by differential leveling and
 JV6338.adjusted by the NATIONAL GEODETIC SURVEY
 JV6338.in June 1991.
 JV6338
 JV6338.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6338.GEOID18 height accuracy estimate available here.
 JV6338
 JV6338.Click photographs - Photos may exist for this station.
 JV6338
 JV6338.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6338
 JV6338.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6338
 JV6338.The ellipsoidal height was determined by GPS observations
 JV6338.and is referenced to NAD 83.
 JV6338
 JV6338.The dynamic height is computed by dividing the NAVD 88
 JV6338.geopotential number by the normal gravity value computed on the
 JV6338.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6338.degrees latitude (g = 980.6199 gals.).
 JV6338
 JV6338.The modeled gravity was interpolated from observed gravity values.
 JV6338
 JV6338. The following values were computed from the NAD 83(2011) position.
 JV6338
 JV6338;                    North         East     Units Scale Factor Converg.
 JV6338;SPC MD       -   214,484.469   458,466.016   MT  1.00002899   +0 25 37.9
 JV6338;SPC MD       -   703,687.80  1,504,150.59   sFT  1.00002899   +0 25 37.9
 JV6338;UTM  18      - 4,383,842.970   386,720.415   MT  0.99975799   -0 50 27.6
 JV6338
 JV6338!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6338!SPC MD       -   0.99998239  x   1.00002899  =   1.00001138
 JV6338!UTM  18      -   0.99998239  x   0.99975799  =   0.99974038
 JV6338
 JV6338:                Primary Azimuth Mark                     Grid Az
 JV6338:SPC MD       -  GIBSON                                   039 35 26.2
 JV6338:UTM  18      -  GIBSON                                   040 51 31.7
 JV6338
 JV6338_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8672083842(NAD 83)
 JV6338
 JV6338|---------------------------------------------------------------------|
 JV6338| PID    Reference Object                     Distance      Geod. Az  |
 JV6338|                                                           dddmmss.s |
 JV6338| JV6337 GIBSON                              APPROX. 0.6 KM 0400104.1 |
 JV6338|---------------------------------------------------------------------|
 JV6338
 JV6338                          SUPERSEDED SURVEY CONTROL
 JV6338
 JV6338  NAD 83(2007)-  39 35 48.61232(N)    076 19 09.61240(W) AD(2002.00) 0
 JV6338  ELLIP H (02/10/07)  112.297  (m)                       GP(2002.00)    
 JV6338  ELLIP H (09/18/02)  112.314  (m)                       GP(       ) 4 2
 JV6338  NAD 83(1991)-  39 35 48.61211(N)    076 19 09.61214(W) AD(       ) 1
 JV6338  ELLIP H (01/27/92)  112.310  (m)                       GP(       ) 4 1
 JV6338  NAD 83(1986)-  39 35 48.60515(N)    076 19 09.61875(W) AD(       ) 1
 JV6338  NGVD 29             145.27   (m)          476.6    (f) LEVELING    3  
 JV6338
 JV6338.Superseded values are not recommended for survey control.
 JV6338
 JV6338.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6338.See file dsdata.pdf to determine how the superseded data were derived.
 JV6338
 JV6338_MARKER: DZ = AZIMUTH MARK DISK
 JV6338_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6338_STAMPING: 57 GIBSON 1989
 JV6338_MARK LOGO: MD-025
 JV6338_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6338_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6338+STABILITY: SURFACE MOTION
 JV6338_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6338+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2007
 JV6338
 JV6338  HISTORY     - Date     Condition        Report By
 JV6338  HISTORY     - 1989     MONUMENTED       RDA
 JV6338  HISTORY     - 19900116 GOOD
 JV6338  HISTORY     - 19990514 GOOD             GEOMET
 JV6338  HISTORY     - 20000325 GOOD             DMW
 JV6338  HISTORY     - 20070224 GOOD             INDIV
 JV6338
 JV6338                          STATION DESCRIPTION
 JV6338
 JV6338'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6338'THE STATION IS LOCATED IN NORTHEASTERN HARFORD COUNTY MARYLAND ABOUT
 JV6338'2 MILES NORTHEAST OF THE VILLAGE OF HICKORY.  TO REACH THE STATION
 JV6338'FROM THE INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 543 IN
 JV6338'HICKORY PROCEED NORTHEAST ALONG HIGHWAY 1 2.12 MILES TO THE STATION
 JV6338'ON THE RIGHT.  TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED
 JV6338'SOUTHWEST ALONG HIGHWAY 1 0.35 MILES TO THE MARK ON THE RIGHT.  THE
 JV6338'MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET IN CONCRETE ABOUT
 JV6338'1 INCH BELOW GROUND STAMPED 57 GIBSON 1989.  THE MARK IS 5.5 FEET
 JV6338'SOUTHEAST OF G AND E POLE NUMBER 51714, 27.2 FEET NORTHWEST OF THE
 JV6338'CENTERLINE OF HIGHWAY 1, AND 82.2 FEET NORTHEAST OF THE SOUTHEAST
 JV6338'CORNER OF BRICK PILLAR OF CHURCH SIGN FOR THE CHURCH OF GOD, AND
 JV6338'1845.42 FEET FROM THE STATION.
 JV6338
 JV6338                          STATION RECOVERY (1990)
 JV6338
 JV6338'RECOVERED 1990
 JV6338'RECOVERED IN GOOD CONDITION.
 JV6338
 JV6338                          STATION RECOVERY (1999)
 JV6338
 JV6338'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (RDA)
 JV6338'RECOVERED AS DESCRIBED.
 JV6338
 JV6338                          STATION RECOVERY (2000)
 JV6338
 JV6338'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2000 (PAS)
 JV6338'RECOVERED IN GOOD CONDITION.
 JV6338
 JV6338                          STATION RECOVERY (2007)
 JV6338
 JV6338'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (TRA)
 JV6338'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6459 ***********************************************************************
 JV6459  DESIGNATION -  GIBSON ISLAND CAUSEWAY FP
 JV6459  PID         -  JV6459
 JV6459  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6459  COUNTRY     -  US
 JV6459  USGS QUAD   -  GIBSON ISLAND (2017)
 JV6459
 JV6459                         *CURRENT SURVEY CONTROL
 JV6459  ______________________________________________________________________
 JV6459* NAD 83(1991) POSITION- 39 05 05.74690(N) 076 25 21.52419(W)   ADJUSTED
 JV6459  ______________________________________________________________________
 JV6459  GEOID HEIGHT    -        -33.276 (meters)                     GEOID18
 JV6459  LAPLACE CORR    -         -2.30  (seconds)                    DEFLEC18
 JV6459  HORZ ORDER      -  THIRD
 JV6459
 JV6459.The horizontal coordinates were established by classical geodetic methods
 JV6459.and adjusted by the National Geodetic Survey in January 1992.
 JV6459
 JV6459.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6459.GEOID18 height accuracy estimate available here.
 JV6459
 JV6459.Click photographs - Photos may exist for this station.
 JV6459
 JV6459.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6459
 JV6459. The following values were computed from the NAD 83(1991) position.
 JV6459
 JV6459;                    North         East     Units Scale Factor Converg.
 JV6459;SPC MD       -   157,592.316   449,951.782   MT  0.99995649   +0 21 44.5
 JV6459;SPC MD       -   517,034.12  1,476,216.80   sFT  0.99995649   +0 21 44.5
 JV6459;UTM  18      - 4,327,164.603   376,955.407   MT  0.99978642   -0 53 49.4
 JV6459
 JV6459_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7695527164(NAD 83)
 JV6459
 JV6459                          SUPERSEDED SURVEY CONTROL
 JV6459
 JV6459  NAD 83(1986)-  39 05 05.75711(N)    076 25 21.54128(W) AD(       ) 3
 JV6459
 JV6459.Superseded values are not recommended for survey control.
 JV6459
 JV6459.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6459.See file dsdata.pdf to determine how the superseded data were derived.
 JV6459
 JV6459_MARKER: 62 = FLAGPOLE
 JV6459_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6459_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6459+SATELLITE: SATELLITE OBSERVATIONS - July 18, 2005
 JV6459
 JV6459  HISTORY     - Date     Condition        Report By
 JV6459  HISTORY     - 1984     FIRST OBSERVED   NOS
 JV6459  HISTORY     - 20020219 GOOD             USPSQD
 JV6459  HISTORY     - 20050718 GOOD             USPSQD
 JV6459
 JV6459                          STATION DESCRIPTION
 JV6459
 JV6459'DESCRIBED BY NATIONAL OCEAN SERVICE 1984 (WVH)
 JV6459'THE STATION, GIBSON ISLAND CAUSEWAY FP, IS THE CENTER OF THE
 JV6459'FLAGPOLE AT THE SOUTH END OF THE CAUSEWAY TO GIBSON ISLAND.
 JV6459'
 JV6459'THE STATION IS LOCATED ON GIBSON ISLAND ON THE EAST SIDE OF THE
 JV6459'SOUTH END OF THE CAUSEWAY.
 JV6459'
 JV6459'TO REACH THE STATION FROM THE JUNCTION OF GOVERNOR RICHIE
 JV6459'HIGHWAY AND MD 177, GO EAST ON MD 177 TO ITS END ON GIBSON
 JV6459'ISLAND AND THE STATION ON THE LEFT.
 JV6459'
 JV6459'DESCRIBED BY J. DANIEL.
 JV6459
 JV6459                          STATION RECOVERY (2002)
 JV6459
 JV6459'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV6459'RECOVERED IN GOOD CONDITION.
 JV6459
 JV6459                          STATION RECOVERY (2005)
 JV6459
 JV6459'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6459'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5240 ***********************************************************************
 JV5240  DESIGNATION -  GIBSON ISLAND WHITE BRICK CHIM
 JV5240  PID         -  JV5240
 JV5240  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5240  COUNTRY     -  US
 JV5240  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5240
 JV5240                         *CURRENT SURVEY CONTROL
 JV5240  ______________________________________________________________________
 JV5240* NAD 83(1991) POSITION- 39 04 05.24161(N) 076 26 07.87147(W)   ADJUSTED
 JV5240  ______________________________________________________________________
 JV5240  GEOID HEIGHT    -        -33.290 (meters)                     GEOID18
 JV5240  LAPLACE CORR    -         -2.42  (seconds)                    DEFLEC18
 JV5240  HORZ ORDER      -  THIRD
 JV5240
 JV5240.The horizontal coordinates were established by classical geodetic methods
 JV5240.and adjusted by the National Geodetic Survey in January 1992.
 JV5240
 JV5240.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5240.GEOID18 height accuracy estimate available here.
 JV5240
 JV5240.Click photographs - Photos may exist for this station.
 JV5240
 JV5240.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5240
 JV5240. The following values were computed from the NAD 83(1991) position.
 JV5240
 JV5240;                    North         East     Units Scale Factor Converg.
 JV5240;SPC MD       -   155,719.603   448,849.474   MT  0.99995546   +0 21 15.4
 JV5240;SPC MD       -   510,890.06  1,472,600.32   sFT  0.99995546   +0 21 15.4
 JV5240;UTM  18      - 4,325,316.878   375,812.401   MT  0.99978990   -0 54 17.4
 JV5240
 JV5240_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7581225316(NAD 83)
 JV5240
 JV5240                          SUPERSEDED SURVEY CONTROL
 JV5240
 JV5240  NAD 83(1986)-  39 04 05.23730(N)    076 26 07.88250(W) AD(       ) 3
 JV5240  NAD 27      -  39 04 04.83800(N)    076 26 09.02500(W) AD(       ) 3
 JV5240  USSD        -  39 04 05.21000(N)    076 26 08.84000(W) AD(       ) 3
 JV5240
 JV5240.Superseded values are not recommended for survey control.
 JV5240
 JV5240.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5240.See file dsdata.pdf to determine how the superseded data were derived.
 JV5240
 JV5240_MARKER: 85 = CHIMNEY
 JV5240
 JV5240  HISTORY     - Date     Condition        Report By
 JV5240  HISTORY     - 1933     FIRST OBSERVED   CGS
 JV5240  HISTORY     - 1961     GOOD             CGS
 JV5240
 JV5240                          STATION DESCRIPTION
 JV5240
 JV5240'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5240'ON THE N SHORE OF THE MAGOTHY RIVER, ABOUT 1,150 METERS N OF
 JV5240'MOUNTAIN POINT (THE S END OF GIBSON ISLAND), ON THE TOP OF A
 JV5240'BLUFF, ABOUT 60 FEET ABOVE HIGH WATER ABOUT 30 METERS E OF THE
 JV5240'EDGE OF BLUFF, ON THE E SIDE OF THE ROAD, ON THE W SIDE OF GIBSON
 JV5240'ISLAND.  HOUSE IS ABOUT 15 BY 18 METERS, OWNED BY P.H. FROHMAN.
 JV5240'CHIMNEY IS THE W OF TWO PAINTED WHITE CHIMNEYS, AND SET FLUSH WITH
 JV5240'THE W END OF THE HOUSE, ALSO PAINTED WHITE.  CHIMNEY IS PROBABLY
 JV5240'THE SAME AS WELCH HOUSE WEST CHIMNEY, 1898, ALTHOUGH THE PRESENT
 JV5240'OWNER DOES NOT KNOW THAT THE HOUSE WAS EVER OWNED BY WELSH.  IT IS
 JV5240'THE OLDEST HOUSE ON THIS PART OF THE ISLAND.  THE NW CORNER OF THE
 JV5240'HOUSE IS 29 METERS (95.3 FEET) SE OF TRIANGULATION STATION SYMINGTON.
 JV5240
 JV5240                          STATION RECOVERY (1961)
 JV5240
 JV5240'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5240'STATION WAS RECOVERED AS DESCRIBED BY J.A.B. IN 1933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6277 ***********************************************************************
 JV6277  DESIGNATION -  GILBERT
 JV6277  PID         -  JV6277
 JV6277  STATE/COUNTY-  MD/HARFORD
 JV6277  COUNTRY     -  US
 JV6277  USGS QUAD   -  ABERDEEN (2016)
 JV6277
 JV6277                         *CURRENT SURVEY CONTROL
 JV6277  ______________________________________________________________________
 JV6277* NAD 83(2011) POSITION- 39 31 41.93462(N) 076 11 36.15690(W)   ADJUSTED
 JV6277* NAD 83(2011) ELLIP HT-    51.353 (meters)        (06/27/12)   ADJUSTED
 JV6277* NAD 83(2011) EPOCH   -  2010.00
 JV6277* NAVD 88 ORTHO HEIGHT -    84.393 (meters)      276.88  (feet) ADJUSTED
 JV6277  ______________________________________________________________________
 JV6277  GEOID HEIGHT    -        -33.030 (meters)                     GEOID18
 JV6277  NAD 83(2011) X  -  1,175,627.318 (meters)                     COMP
 JV6277  NAD 83(2011) Y  - -4,783,909.782 (meters)                     COMP
 JV6277  NAD 83(2011) Z  -  4,037,761.466 (meters)                     COMP
 JV6277  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 JV6277  DYNAMIC HEIGHT  -         84.351 (meters)      276.74  (feet) COMP
 JV6277  MODELED GRAVITY -    980,127.1   (mgal)                       NAVD 88
 JV6277
 JV6277  VERT ORDER      -  FIRST     CLASS II
 JV6277
 JV6277  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6277  Standards:
 JV6277         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6277            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6277  -------------------------------------------------------------------
 JV6277  NETWORK    1.46   3.94           0.57   0.60   2.01      0.38450856
 JV6277  -------------------------------------------------------------------
 JV6277  Click here for local accuracies and other accuracy information.
 JV6277
 JV6277.The horizontal coordinates were established by GPS observations
 JV6277.and adjusted by the National Geodetic Survey in June 2012.
 JV6277
 JV6277.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6277.been affixed to the stable North American tectonic plate. See 
 JV6277.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6277
 JV6277.The horizontal coordinates are valid at the epoch date displayed above
 JV6277.which is a decimal equivalence of Year/Month/Day.
 JV6277
 JV6277.The orthometric height was determined by differential leveling and
 JV6277.adjusted by the NATIONAL GEODETIC SURVEY
 JV6277.in June 1991.
 JV6277
 JV6277.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6277.GEOID18 height accuracy estimate available here.
 JV6277
 JV6277.Click photographs - Photos may exist for this station.
 JV6277
 JV6277.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6277
 JV6277.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6277
 JV6277.The ellipsoidal height was determined by GPS observations
 JV6277.and is referenced to NAD 83.
 JV6277
 JV6277.The dynamic height is computed by dividing the NAVD 88
 JV6277.geopotential number by the normal gravity value computed on the
 JV6277.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6277.degrees latitude (g = 980.6199 gals.).
 JV6277
 JV6277.The modeled gravity was interpolated from observed gravity values.
 JV6277
 JV6277. The following values were computed from the NAD 83(2011) position.
 JV6277
 JV6277;                    North         East     Units Scale Factor Converg.
 JV6277;SPC MD       -   206,965.048   469,352.362   MT  1.00001464   +0 30 22.6
 JV6277;SPC MD       -   679,017.83  1,539,866.87   sFT  1.00001464   +0 30 22.6
 JV6277;UTM  18      - 4,376,086.828   397,434.850   MT  0.99972952   -0 45 34.6
 JV6277
 JV6277!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6277!SPC MD       -   0.99999194  x   1.00001464  =   1.00000658
 JV6277!UTM  18      -   0.99999194  x   0.99972952  =   0.99972147
 JV6277
 JV6277_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9743476086(NAD 83)
 JV6277
 JV6277                          SUPERSEDED SURVEY CONTROL
 JV6277
 JV6277  NAD 83(2007)-  39 31 41.93468(N)    076 11 36.15769(W) AD(2002.00) 0
 JV6277  ELLIP H (02/10/07)   51.373  (m)                       GP(2002.00)    
 JV6277  ELLIP H (09/18/02)   51.374  (m)                       GP(       ) 4 2
 JV6277  NAD 83(1991)-  39 31 41.93420(N)    076 11 36.15882(W) AD(       ) 1
 JV6277  ELLIP H (01/27/92)   51.368  (m)                       GP(       ) 4 1
 JV6277  NAD 83(1986)-  39 31 41.92840(N)    076 11 36.16442(W) AD(       ) 1
 JV6277  NGVD 29              84.63   (m)          277.7    (f) LEVELING    3  
 JV6277
 JV6277.Superseded values are not recommended for survey control.
 JV6277
 JV6277.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6277.See file dsdata.pdf to determine how the superseded data were derived.
 JV6277
 JV6277_MARKER: DD = SURVEY DISK
 JV6277_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6277_STAMPING: 28 GILBERT 1989
 JV6277_MARK LOGO: MD-025
 JV6277_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6277_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6277+STABILITY: SURFACE MOTION
 JV6277_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6277+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2002
 JV6277
 JV6277  HISTORY     - Date     Condition        Report By
 JV6277  HISTORY     - 1989     MONUMENTED       RDA
 JV6277  HISTORY     - 19910711 GOOD             MDSHA
 JV6277  HISTORY     - 19991226 GOOD             USPSQD
 JV6277  HISTORY     - 20020309 GOOD             USPSQD
 JV6277
 JV6277                          STATION DESCRIPTION
 JV6277
 JV6277'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6277'THE STATION IS LOCATED IN SOUTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6277'.5 MILE NORTHWEST OF THE VILLAGE OF ABERDEEN JUST NORTH OF THE
 JV6277'INTERSECTION STATE HIGHWAY 22 AND U.S. HIGHWAY 95.  TO REACH THE
 JV6277'STATION FROM THE INTERSECTION OF HIGHWAY 22 AND HIGHWAY 95 PROCEED
 JV6277'NORTHWEST ALONG HIGHWAY 22 0.1 OF A MILE TO THE STATION ON THE RIGHT.
 JV6277'THE STATION IS A STANDARD HARFORD COUNTY STATION DISC SET IN CONCRETE
 JV6277'ABOUT 1 INCH BELOW GROUND STAMPED 28 GILBERT 1989.  THE STATION IS
 JV6277'35.5 FEET NORTHWEST OF THE END OF THE GUARD RAIL OF THE EXIT RAMP OF
 JV6277'HIGHWAY 95, 54.3 FEET SOUTHWEST OF AN 8 INCH WALNUT TREE, 45.5 FEET
 JV6277'EAST OF C AND P MARYLAND POLE NUMBER 62.
 JV6277
 JV6277                          STATION RECOVERY (1991)
 JV6277
 JV6277'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6277'RECOVERED IN GOOD CONDITION.
 JV6277
 JV6277                          STATION RECOVERY (1999)
 JV6277
 JV6277'RECOVERY NOTE BY US POWER SQUADRON 1999
 JV6277'RECOVERED IN GOOD CONDITION.
 JV6277
 JV6277                          STATION RECOVERY (2002)
 JV6277
 JV6277'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV6277'FOUND.  LOCATED 36 FT FROM NEAREST EDGE OF EXIT RAMP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5550 ***********************************************************************
 JV5550  DESIGNATION -  GILL USE 1915
 JV5550  PID         -  JV5550
 JV5550  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5550  COUNTRY     -  US
 JV5550  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5550
 JV5550                         *CURRENT SURVEY CONTROL
 JV5550  ______________________________________________________________________
 JV5550* NAD 83(1991) POSITION- 39 16 42.98043(N) 076 35 55.66409(W)   ADJUSTED
 JV5550* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5550  ______________________________________________________________________
 JV5550  GEOID HEIGHT    -        -32.782 (meters)                     GEOID18
 JV5550  LAPLACE CORR    -         -5.10  (seconds)                    DEFLEC18
 JV5550  HORZ ORDER      -  THIRD
 JV5550
 JV5550.The horizontal coordinates were established by classical geodetic methods
 JV5550.and adjusted by the National Geodetic Survey in January 1992.
 JV5550
 JV5550.The orthometric height was scaled from a topographic map.
 JV5550
 JV5550.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5550.GEOID18 height accuracy estimate available here.
 JV5550
 JV5550.Click photographs - Photos may exist for this station.
 JV5550
 JV5550.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5550
 JV5550. The following values were computed from the NAD 83(1991) position.
 JV5550
 JV5550;                    North         East     Units Scale Factor Converg.
 JV5550;SPC MD       -   179,011.367   434,617.193   MT  0.99997451   +0 15 06.5
 JV5550;SPC MD       -   587,306.46  1,425,906.57   sFT  0.99997451   +0 15 06.5
 JV5550;UTM  18      - 4,348,912.751   362,098.464   MT  0.99983415   -1 00 44.4
 JV5550
 JV5550!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5550!SPC MD       -   1.00000502  x   0.99997451  =   0.99997953
 JV5550!UTM  18      -   1.00000502  x   0.99983415  =   0.99983917
 JV5550
 JV5550:                Primary Azimuth Mark                     Grid Az
 JV5550:SPC MD       -  CONSOL USE 1915                          114 08 36.3
 JV5550:UTM  18      -  CONSOL USE 1915                          115 24 27.2
 JV5550
 JV5550_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6209848912(NAD 83)
 JV5550
 JV5550|---------------------------------------------------------------------|
 JV5550| PID    Reference Object                     Distance      Geod. Az  |
 JV5550|                                                           dddmmss.s |
 JV5550| JV5539 CONSOL USE 1915                     APPROX. 0.6 KM 1142342.8 |
 JV5550| JV5488 CAHILL USE 1915                     467.146 METERS 2135753.0 |
 JV5550| JV5504 BROMO SELTZER BLDG FINIAL LT        APPROX. 2.1 KM 2980639.4 |
 JV5550|---------------------------------------------------------------------|
 JV5550
 JV5550                          SUPERSEDED SURVEY CONTROL
 JV5550
 JV5550  NAD 83(1986)-  39 16 42.97675(N)    076 35 55.67288(W) AD(       ) 3
 JV5550  NAD 27      -  39 16 42.58700(N)    076 35 56.78000(W) AD(       ) 3
 JV5550  USSD        -  39 16 42.95300(N)    076 35 56.61700(W) AD(       ) 3
 JV5550
 JV5550.Superseded values are not recommended for survey control.
 JV5550
 JV5550.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5550.See file dsdata.pdf to determine how the superseded data were derived.
 JV5550
 JV5550
 JV5550  HISTORY     - Date     Condition        Report By
 JV5550  HISTORY     - 1915     MONUMENTED       CGS
 JV5550  HISTORY     - 1924     GOOD             CGS
 JV5550
 JV5550                          STATION DESCRIPTION
 JV5550
 JV5550'DESCRIBED BY COAST AND GEODETIC SURVEY 1924
 JV5550'AT THE NORTHERLY SIDE OF BALTIMORE HARBOR, AT THE SW CORNER OF
 JV5550'GILLS LUMBER YARD, 1.957 METERS (6.42 FEET) FROM THE OUTER CORNER
 JV5550'OF A CONCRETE GUARD RAIL.  THE STATION IS MARKED BY A CONCRETE
 JV5550'MONUMENT CENTERED BY A STANDARD U.S.E. BRONZE MARKER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6226 ***********************************************************************
 DN6226  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6226  DESIGNATION -  GILLEY
 DN6226  PID         -  DN6226
 DN6226  STATE/COUNTY-  MD/CECIL
 DN6226  COUNTRY     -  US
 DN6226  USGS QUAD   -  RISING SUN (2016)
 DN6226
 DN6226                         *CURRENT SURVEY CONTROL
 DN6226  ______________________________________________________________________
 DN6226* NAD 83(2011) POSITION- 39 42 48.81191(N) 076 02 49.46928(W)   ADJUSTED
 DN6226* NAD 83(2011) ELLIP HT-    97.803 (meters)        (06/27/12)   ADJUSTED
 DN6226* NAD 83(2011) EPOCH   -  2010.00
 DN6226* NAVD 88 ORTHO HEIGHT -   130.79  (meters)      429.1   (feet) GPS OBS
 DN6226  ______________________________________________________________________
 DN6226  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6226  GEOID HEIGHT    -        -32.963 (meters)                     GEOID03
 DN6226  GEOID HEIGHT    -        -32.987 (meters)                     GEOID18
 DN6226  NAD 83(2011) X  -  1,184,685.022 (meters)                     COMP
 DN6226  NAD 83(2011) Y  - -4,768,198.087 (meters)                     COMP
 DN6226  NAD 83(2011) Z  -  4,053,633.711 (meters)                     COMP
 DN6226  LAPLACE CORR    -         -0.36  (seconds)                    DEFLEC18
 DN6226
 DN6226  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6226  Standards:
 DN6226         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6226            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6226  -------------------------------------------------------------------
 DN6226  NETWORK    0.55   1.04           0.26   0.17   0.53     -0.11218226
 DN6226  -------------------------------------------------------------------
 DN6226  Click here for local accuracies and other accuracy information.
 DN6226
 DN6226.The horizontal coordinates were established by GPS observations
 DN6226.and adjusted by the National Geodetic Survey in June 2012.
 DN6226
 DN6226.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6226.been affixed to the stable North American tectonic plate. See 
 DN6226.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6226
 DN6226.The horizontal coordinates are valid at the epoch date displayed above
 DN6226.which is a decimal equivalence of Year/Month/Day.
 DN6226
 DN6226.The orthometric height was determined by GPS observations and a
 DN6226.high-resolution geoid model using precise GPS observation and
 DN6226.processing techniques.
 DN6226
 DN6226.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6226.GEOID18 height accuracy estimate available here.
 DN6226
 DN6226.Click photographs - Photos may exist for this station.
 DN6226
 DN6226.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6226
 DN6226.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6226
 DN6226.The ellipsoidal height was determined by GPS observations
 DN6226.and is referenced to NAD 83.
 DN6226
 DN6226. The following values were computed from the NAD 83(2011) position.
 DN6226
 DN6226;                    North         East     Units Scale Factor Converg.
 DN6226;SPC MD       -   227,652.987   481,716.103   MT  1.00005675   +0 35 53.1
 DN6226;SPC MD       -   746,891.51  1,580,430.25   sFT  1.00005675   +0 35 53.1
 DN6226;UTM  18      - 4,396,489.875   410,248.746   MT  0.99969917   -0 40 08.7
 DN6226
 DN6226!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6226!SPC MD       -   0.99998466  x   1.00005675  =   1.00004141
 DN6226!UTM  18      -   0.99998466  x   0.99969917  =   0.99968383
 DN6226
 DN6226_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1024896489(NAD 83)
 DN6226
 DN6226                          SUPERSEDED SURVEY CONTROL
 DN6226
 DN6226  NAD 83(2007)-  39 42 48.81215(N)    076 02 49.47008(W) AD(2002.00) 1
 DN6226  ELLIP H (02/23/12)   97.821  (m)                       GP(2002.00) 4 1
 DN6226
 DN6226.Superseded values are not recommended for survey control.
 DN6226
 DN6226.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6226.See file dsdata.pdf to determine how the superseded data were derived.
 DN6226
 DN6226_MARKER: DD = SURVEY DISK
 DN6226_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6226_STAMPING: GILLEY 2008
 DN6226_MARK LOGO: MD-015
 DN6226_PROJECTION: FLUSH
 DN6226_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6226_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6226+STABILITY: SURFACE MOTION
 DN6226_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6226+SATELLITE: SATELLITE OBSERVATIONS - November 28, 2012
 DN6226
 DN6226  HISTORY     - Date     Condition        Report By
 DN6226  HISTORY     - 20081204 MONUMENTED       GWS
 DN6226  HISTORY     - 20121128 GOOD             NGS
 DN6226
 DN6226                          STATION DESCRIPTION
 DN6226
 DN6226'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6226'THE STATION IS LOCATED 1.33 MI (2.1 KM) NORTHEAST OF THE TOWN OF
 DN6226'RISING SUN.
 DN6226'
 DN6226'TO REACH THE STATION FROM THE JUNCTION OF MD 276 (TOME HIGHWAY) AND US
 DN6226'1 (CONOWINGO ROAD), PROCEED EAST ON US 1 FOR 2.07 MI (3.3 KM) TO THE
 DN6226'STATION ON THE RIGHT, JUST PAST STEVENS ROAD.
 DN6226'
 DN6226'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6226'CONCRETE MONUMENT, 45 FT (13.7 M) SOUTH OF THE CENTERLINE OF CONOWINGO
 DN6226'ROAD, 65.8 FT (20.1 M) WEST OF THE FASTRAK EXPRESS SIGN AND 91.9 FT
 DN6226'(28.0 M) EAST OF A UTILITY POLE (CONECTIV 34577/42337).
 DN6226
 DN6226                          STATION RECOVERY (2012)
 DN6226
 DN6226'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (DRD)
 DN6226'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1473 ***********************************************************************
 JW1473  DESIGNATION -  GILPIN
 JW1473  PID         -  JW1473
 JW1473  STATE/COUNTY-  MD/ALLEGANY
 JW1473  COUNTRY     -  US
 JW1473  USGS QUAD   -  FLINTSTONE (2016)
 JW1473
 JW1473                         *CURRENT SURVEY CONTROL
 JW1473  ______________________________________________________________________
 JW1473* NAD 83(1995) POSITION- 39 41 46.13595(N) 078 33 02.44642(W)   ADJUSTED
 JW1473* NAVD 88 ORTHO HEIGHT -   247.    (meters)      810.    (feet) SCALED
 JW1473  ______________________________________________________________________
 JW1473  GEOID HEIGHT    -        -33.117 (meters)                     GEOID18
 JW1473  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 JW1473  HORZ ORDER      -  SECOND
 JW1473
 JW1473.The horizontal coordinates were established by classical geodetic methods
 JW1473.and adjusted by the National Geodetic Survey in April 1998.
 JW1473
 JW1473.The orthometric height was scaled from a topographic map.
 JW1473
 JW1473.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1473.GEOID18 height accuracy estimate available here.
 JW1473
 JW1473.Click photographs - Photos may exist for this station.
 JW1473
 JW1473.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1473
 JW1473. The following values were computed from the NAD 83(1995) position.
 JW1473
 JW1473;                    North         East     Units Scale Factor Converg.
 JW1473;SPC MD       -   226,423.034   266,995.869   MT  1.00005234   -0 58 23.7
 JW1473;SPC MD       -   742,856.24    875,968.95   sFT  1.00005234   -0 58 23.7
 JW1473;SPC PA S     -    40,596.812   531,322.608   MT  1.00004555   -0 31 10.1
 JW1473;SPC PA S     -   133,191.37  1,743,180.92   sFT  1.00004555   -0 31 10.1
 JW1473;UTM  17      - 4,396,901.635   710,008.903   MT  1.00014301   +1 33 54.0
 JW1473
 JW1473!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1473!SPC MD       -   0.99996648  x   1.00005234  =   1.00001881
 JW1473!SPC PA S     -   0.99996648  x   1.00004555  =   1.00001202
 JW1473!UTM  17      -   0.99996648  x   1.00014301  =   1.00010948
 JW1473
 JW1473:                Primary Azimuth Mark                     Grid Az
 JW1473:SPC MD       -  GILPIN AZ MK                             120 57 19.1
 JW1473:SPC PA S     -  GILPIN AZ MK                             120 30 05.5
 JW1473:UTM  17      -  GILPIN AZ MK                             118 25 01.4
 JW1473
 JW1473_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD1000896901(NAD 83)
 JW1473
 JW1473|---------------------------------------------------------------------|
 JW1473| PID    Reference Object                     Distance      Geod. Az  |
 JW1473|                                                           dddmmss.s |
 JW1473| CJ9864 GILPIN RM 1                           9.153 METERS 01117     |
 JW1473| JW1472 GILPIN AZ MK                        APPROX. 0.8 KM 1195855.4 |
 JW1473| CJ9866 GILPIN RM 3                          14.019 METERS 21108     |
 JW1473| CJ9865 GILPIN RM 2                          10.084 METERS 28427     |
 JW1473|---------------------------------------------------------------------|
 JW1473
 JW1473                          SUPERSEDED SURVEY CONTROL
 JW1473
 JW1473  NAD 83(1991)-  39 41 46.13623(N)    078 33 02.44757(W) AD(       ) 2
 JW1473  NAD 83(1986)-  39 41 46.13809(N)    078 33 02.45337(W) AD(       ) 2
 JW1473  NAD 27      -  39 41 45.82400(N)    078 33 03.40300(W) AD(       ) 2
 JW1473
 JW1473.Superseded values are not recommended for survey control.
 JW1473
 JW1473.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1473.See file dsdata.pdf to determine how the superseded data were derived.
 JW1473
 JW1473_MARKER: DS = TRIANGULATION STATION DISK
 JW1473_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1473_STAMPING: GILPIN 1955
 JW1473_MARK LOGO: CGS
 JW1473
 JW1473  HISTORY     - Date     Condition        Report By
 JW1473  HISTORY     - 1955     MONUMENTED       CGS
 JW1473  HISTORY     - 1963     SEE DESCRIPTION  CGS
 JW1473
 JW1473                          STATION DESCRIPTION
 JW1473
 JW1473'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1473'THE STATION IS ABOUT 11 MILES NORTHEAST OF CUMBERLAND, 1 MILE
 JW1473'SOUTHEAST OF FLINTSTONE, 0.1 MILE NORTHEAST OF U.S. HIGHWAY 40,
 JW1473'65 FEET NORTHEAST OF THE NORTHEAST CORNER OF A HOUSE AND 4 FEET
 JW1473'SOUTHWEST OF A 4 IN X 4 IN WHITE WITNESS POST AND A FENCE.
 JW1473'
 JW1473'TO REACH THE STATION FROM THE POST OFFICE IN FLINTSTONE, GO
 JW1473'SOUTHEAST ON U.S. HIGHWAY 40 FOR 1.2 MILES TO DRIVEWAY ON THE
 JW1473'LEFT (THIS IS 0.1 MILE WEST OF THE CONCRETE BRIDGE OVER TOWN
 JW1473'CREEK), TURN LEFT ON THE DRIVEWAY AND GO 0.1 MILE TO THE
 JW1473'STATION.
 JW1473'
 JW1473'TO REACH THE AZIMUTH MARK FROM THE DRIVEWAY, GO EAST ON THE
 JW1473'HIGHWAY FOR 0.35 MILE TO THE MARK ON THE RIGHT AS DESCRIBED.
 JW1473'
 JW1473'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1473'STAMPED GILPIN 1955.
 JW1473'
 JW1473'REFERENCE MARK 1 IS 27 FEET NORTHEAST OF THE WITNESS POST.  THE
 JW1473'MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED GILPIN
 JW1473'NO 1 1955.
 JW1473'
 JW1473'REFERENCE MARK 2 IS 70 FEET NORTH OF THE NORTHEAST CORNER OF
 JW1473'THE HOUSE.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1473'STAMPED GILPIN NO 2 1955.
 JW1473'
 JW1473'THE AZIMUTH MARK IS 25 FEET SOUTHEAST OF THE CENTER OF
 JW1473'U.S. HIGHWAY 40, 15 FEET EAST OF THE EAST END OF A GUARD RAIL, 5
 JW1473'FEET NORTHEAST OF POWERLINE POLE NO. C 2792 AND 3 FEET NORTHEAST
 JW1473'OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK PROJECTS 3 INCHES,
 JW1473'AND THE DISK IS STAMPED GILPIN 1955.
 JW1473'
 JW1473'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JW1473
 JW1473                          STATION RECOVERY (1963)
 JW1473
 JW1473'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (VBM)
 JW1473'THE SURFACE MARK WAS FOUND PUSHED OVER.  THE SUBSURFACE STATION
 JW1473'MARK, REFERENCE MARK 1 AND THE AZIMUTH MARK WAS RECOVERED IN
 JW1473'GOOD CONDITION.  REFERENCE MARK 2 WAS NOT RECOVERED AND SHOULD BE
 JW1473'CONSIDERED LOST.  THE DISTANCE TO REFERENCE MARK 1 WAS FOUND TO
 JW1473'BE .03 FEET SHORTER THAN PREVIOUSLY MEASURED.  THE ANGLE BETWEEN
 JW1473'THE AZIMUTH MARK AND REFERENCE MARK 1 DID NOT CHECK BY 2 MINUTES
 JW1473'AND 10 SECONDS.  A REFERENCE MARK 3 WAS ESTABLISHED AT THIS
 JW1473'TIME.  THE HIGHWAY MENTIONED IN THE TO REACH HAS CHANGED.  A
 JW1473'NEW DESCRIPTION FOLLOWS.
 JW1473'
 JW1473'THE STATION IS LOCATED ABOUT 11 MILES EAST-NORTHEAST OF
 JW1473'CUMBERLAND, 1 MILE SOUTHEAST OF FLINTSTONE, 0.05 MILE NORTHEAST
 JW1473'OF U.S. HIGHWAY 40, AND ON THE PROPERTY OF MR. JOSIAH
 JW1473'E. MULLENAX.  IT IS 92 FEET EAST OF THE SOUTHEAST CORNER OF
 JW1473'MR. MULLENAXS HOUSE, 86 FEET EAST-SOUTHEAST OF THE NORTHEAST
 JW1473'CORNER OF THE HOUSE, 59 FEET WEST OF A TELEPHONE POLE, 48 FEET
 JW1473'NORTHEAST OF A POWER POLE, AND 4 FEET SOUTHWEST OF A WHITE
 JW1473'WITNESS POST.  THE MONUMENT IS FLUSH AND THE DISK IS STAMPED
 JW1473'GILPIN 1955 1963.  NOTE 1B 7A.
 JW1473'
 JW1473'TO REACH FROM THE CROSSROAD, JUST WEST OF THE BRIDGE OVER
 JW1473'FLINTSTONE CREEK, IN THE NORTH EDGE OF FLINTSTONE, GO SOUTHEAST
 JW1473'ON U.S. HIGHWAY 40 FOR 0.95 MILE TO A SIDE ROAD RIGHT.* CONTINUE
 JW1473'SOUTHEAST ON HIGHWAY 40 FOR 0.1 MILE TO A SIDE ROAD
 JW1473'LEFT.  CONTINUE SOUTHEAST ON HIGHWAY 40 FOR ABOUT 150 FEET TO A
 JW1473'DRIVEWAY ON THE LEFT.  TURN LEFT AND GO NORTHEAST AND SOUTHEAST
 JW1473'ON THE DRIVEWAY FOR 0.05 MILE TO THE HOME OF MR. MULLENAX AND
 JW1473'THE STATION.
 JW1473'
 JW1473'* TO REACH THE AZIMUTH MARK FROM THIS POINT, GO SOUTHWEST ON
 JW1473'A PAVED ROAD FOR ABOUT 100 FEET TO A T-ROAD (OLD U.S. HIGHWAY
 JW1473'40).  TURN LEFT AND GO SOUTHEAST ON A PAVED ROAD FOR 0.4 MILE
 JW1473'TO THE CENTER OF A CONCRETE BRIDGE OVER TOWN CREEK.  CONTINUE
 JW1473'SOUTHEAST ON THE PAVED ROAD FOR 0.35 MILE TO THE AZIMUTH MARK ON
 JW1473'THE RIGHT, JUST BEFORE REACHING A REVERSE DRIVEWAY ON THE RIGHT.
 JW1473'
 JW1473'REFERENCE MARK 1 IS 92 FEET NORTHEAST OF THE NORTHEAST CORNER
 JW1473'OF THE HOUSE, 61 FEET NORTHWEST OF THE TELEPHONE POLE, AND 26 FEET
 JW1473'NORTH OF THE WHITE WITNESS POST.  THE MONUMENT IS FLUSH AND THE
 JW1473'DISK IS STAMPED GILPIN NO 1 1955.
 JW1473'
 JW1473'REFERENCE MARK 3 IS 72 FEET SOUTHEAST OF THE SOUTHEAST CORNER
 JW1473'OF THE HOUSE, 50 FEET SOUTHWEST OF THE WHITE WITNESS POST, AND
 JW1473'2 FEET NORTHEAST OF THE POWER POLE.  THE MONUMENT IS FLUSH AND
 JW1473'THE DISK IS STAMPED GILPIN NO 3 1955 1963.
 JW1473'
 JW1473'THE AZIMUTH MARK IS 51 FEET SOUTHEAST OF A POWER POLE NO. 2201,
 JW1473'24 FEET SOUTHEAST OF THE CENTERLINE OF A PAVED ROAD (OLD
 JW1473'U.S. HIGHWAY 40), 22 FEET NORTHWEST OF THE CENTERLINE OF A
 JW1473'GRAVELED DRIVEWAY, 5 FEET NORTHEAST OF A POWER POLE WITH A GUY
 JW1473'WIRE, AND 1 FOOT WEST OF A WITNESS POST.  THE MONUMENT PROJECTS
 JW1473'2 INCHES AND THE DISK IS STAMPED GILPIN 1955.
 JW1473'
 JW1473'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1472 ***********************************************************************
 JW1472  DESIGNATION -  GILPIN AZ MK
 JW1472  PID         -  JW1472
 JW1472  STATE/COUNTY-  MD/ALLEGANY
 JW1472  COUNTRY     -  US
 JW1472  USGS QUAD   -  FLINTSTONE (2016)
 JW1472
 JW1472                         *CURRENT SURVEY CONTROL
 JW1472  ______________________________________________________________________
 JW1472* NAD 83(1995) POSITION- 39 41 33.09388(N) 078 32 33.18746(W)   ADJUSTED
 JW1472* NAVD 88 ORTHO HEIGHT -   253.    (meters)      830.    (feet) SCALED
 JW1472  ______________________________________________________________________
 JW1472  GEOID HEIGHT    -        -33.139 (meters)                     GEOID18
 JW1472  LAPLACE CORR    -         -3.44  (seconds)                    DEFLEC18
 JW1472  HORZ ORDER      -  THIRD
 JW1472
 JW1472.The horizontal coordinates were established by classical geodetic methods
 JW1472.and adjusted by the National Geodetic Survey in April 1998.
 JW1472
 JW1472.The orthometric height was scaled from a topographic map.
 JW1472
 JW1472.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1472.GEOID18 height accuracy estimate available here.
 JW1472
 JW1472.Click photographs - Photos may exist for this station.
 JW1472
 JW1472.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1472
 JW1472. The following values were computed from the NAD 83(1995) position.
 JW1472
 JW1472;                    North         East     Units Scale Factor Converg.
 JW1472;SPC MD       -   226,009.025   267,686.113   MT  1.00005143   -0 58 05.4
 JW1472;SPC MD       -   741,497.94    878,233.52   sFT  1.00005143   -0 58 05.4
 JW1472;SPC PA S     -    40,188.287   532,016.105   MT  1.00004638   -0 30 51.1
 JW1472;SPC PA S     -   131,851.07  1,745,456.17   sFT  1.00004638   -0 30 51.1
 JW1472;UTM  17      - 4,396,518.565   710,716.871   MT  1.00014668   +1 34 12.2
 JW1472
 JW1472!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1472!SPC MD       -   0.99996554  x   1.00005143  =   1.00001697
 JW1472!SPC PA S     -   0.99996554  x   1.00004638  =   1.00001192
 JW1472!UTM  17      -   0.99996554  x   1.00014668  =   1.00011221
 JW1472
 JW1472_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD1071696518(NAD 83)
 JW1472
 JW1472                          SUPERSEDED SURVEY CONTROL
 JW1472
 JW1472  NAD 83(1991)-  39 41 33.09413(N)    078 32 33.18855(W) AD(       ) 3
 JW1472  NAD 83(1986)-  39 41 33.09599(N)    078 32 33.19447(W) AD(       ) 3
 JW1472  NAD 27      -  39 41 32.78000(N)    078 32 34.14000(W) AD(       ) 3
 JW1472
 JW1472.Superseded values are not recommended for survey control.
 JW1472
 JW1472.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1472.See file dsdata.pdf to determine how the superseded data were derived.
 JW1472
 JW1472_MARKER: DZ = AZIMUTH MARK DISK
 JW1472_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1472_STAMPING: GILPIN 1955
 JW1472_MARK LOGO: CGS
 JW1472_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1472+STABILITY: SURFACE MOTION
 JW1472
 JW1472  HISTORY     - Date     Condition        Report By
 JW1472  HISTORY     - 1955     MONUMENTED       CGS
 JW1472
 JW1472                          STATION DESCRIPTION
 JW1472
 JW1472'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JW1472'STATION GILPIN IS ABOUT 11 MILES NORTHEAST OF CUMBERLAND, 1 MILE
 JW1472'SOUTHEAST OF FLINTSTONE, 0.1 MILE NORTHEAST OF U.S. HIGHWAY 40,
 JW1472'65 FEET NORTHEAST OF THE NORTHEAST CORNER OF A HOUSE AND 4 FEET
 JW1472'SOUTHWEST OF A 4 IN X 4 IN WHITE WITNESS POST AND A FENCE.
 JW1472'
 JW1472'TO REACH THE STATION GILPIN FROM THE POST OFFICE IN FLINTSTONE, GO
 JW1472'SOUTHEAST ON U.S. HIGHWAY 40 FOR 1.2 MILES TO DRIVEWAY ON THE
 JW1472'LEFT (THIS IS 0.1 MILE WEST OF THE CONCRETE BRIDGE OVER TOWN
 JW1472'CREEK), TURN LEFT ON THE DRIVEWAY AND GO 0.1 MILE TO THE
 JW1472'STATION.
 JW1472'
 JW1472'TO REACH THE AZIMUTH MARK FROM THE DRIVEWAY, GO EAST ON THE
 JW1472'HIGHWAY FOR 0.35 MILE TO THE MARK ON THE RIGHT AS DESCRIBED.
 JW1472'
 JW1472'THE AZIMUTH MARK IS 25 FEET SOUTHEAST OF THE CENTER OF
 JW1472'U.S. HIGHWAY 40, 15 FEET EAST OF THE EAST END OF A GUARD RAIL, 5
 JW1472'FEET NORTHEAST OF POWERLINE POLE NO. C 2792 AND 3 FEET NORTHEAST
 JW1472'OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK PROJECTS 3 INCHES,
 JW1472'AND THE DISK IS STAMPED GILPIN 1955.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1665 ***********************************************************************
 JW1665  DESIGNATION -  GILPIN RESET
 JW1665  PID         -  JW1665
 JW1665  STATE/COUNTY-  MD/ALLEGANY
 JW1665  COUNTRY     -  US
 JW1665  USGS QUAD   -  FLINTSTONE (2016)
 JW1665
 JW1665                         *CURRENT SURVEY CONTROL
 JW1665  ______________________________________________________________________
 JW1665* NAD 83(1986) POSITION- 39 41 46.14   (N) 078 33 02.45   (W)   HD_HELD1
 JW1665* NAVD 88 ORTHO HEIGHT -   248.998 (meters)      816.92  (feet) ADJUSTED
 JW1665  ______________________________________________________________________
 JW1665  GEOID HEIGHT    -        -33.117 (meters)                     GEOID18
 JW1665  DYNAMIC HEIGHT  -        248.853 (meters)      816.45  (feet) COMP
 JW1665  MODELED GRAVITY -    980,039.6   (mgal)                       NAVD 88
 JW1665
 JW1665  VERT ORDER      -  SECOND    CLASS I
 JW1665
 JW1665.The horizontal coordinates were determined by differentially corrected
 JW1665.hand held GPS observations or other comparable positioning techniques
 JW1665.and have an estimated accuracy of +/- 3 meters.
 JW1665
 JW1665.The orthometric height was determined by differential leveling and
 JW1665.adjusted by the NATIONAL GEODETIC SURVEY
 JW1665.in April 1995.
 JW1665
 JW1665.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1665.GEOID18 height accuracy estimate available here.
 JW1665
 JW1665.Click photographs - Photos may exist for this station.
 JW1665
 JW1665.The dynamic height is computed by dividing the NAVD 88
 JW1665.geopotential number by the normal gravity value computed on the
 JW1665.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1665.degrees latitude (g = 980.6199 gals.).
 JW1665
 JW1665.The modeled gravity was interpolated from observed gravity values.
 JW1665
 JW1665;                    North         East    Units  Estimated Accuracy
 JW1665;SPC MD       -   226,423.2     266,995.8     MT  (+/- 3 meters HH1 GPS) 
 JW1665
 JW1665_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD1000896901(NAD 83)
 JW1665
 JW1665                          SUPERSEDED SURVEY CONTROL
 JW1665
 JW1665.No superseded survey control is available for this station.
 JW1665
 JW1665_MARKER: DS = TRIANGULATION STATION DISK
 JW1665_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1665_STAMPING: GILPIN 1955 1963
 JW1665_MARK LOGO: CGS
 JW1665_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1665_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1665+STABILITY: SURFACE MOTION
 JW1665_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1665+SATELLITE: SATELLITE OBSERVATIONS - November 20, 1992
 JW1665
 JW1665  HISTORY     - Date     Condition        Report By
 JW1665  HISTORY     - 1963     MONUMENTED       CGS
 JW1665  HISTORY     - 19921120 GOOD             MDSHA
 JW1665
 JW1665                          STATION DESCRIPTION
 JW1665
 JW1665'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1665'THE MARK IS LOCATED ABOUT 0.9 MI (1.4 KM) EAST-SOUTHEAST OF
 JW1665'FLINTSTONE, 2.3 MI (3.7 KM) WEST OF PRATT AND 9.7 MI (15.6 KM) WEST
 JW1665'OF PINEY GROVE.  IT IS ON THE ROAD RIGHT-OF-WAY PROPERTY.  TO REACH
 JW1665'FROM THE POST OFFICE AT FLINTSTONE, GO WEST ON MARYLAND STATE ROUTE
 JW1665'144 FOR 150.0 FT (45.7 M) TO THE ENTRANCE FOR THE ACCESS RAMP TO
 JW1665'INTERSTATE HIGHWAY 68 EASTBOUND.  GO EASTERLY ON INTERSTATE HIGHWAY
 JW1665'68 FOR 1.4 MI (2.3 KM) TO THE MARKER ON THE RIGHT SOUTH OF THE
 JW1665'EASTBOUND LANES.  THE POINT IS MARKED WITH A STANDARD COASTAL AND
 JW1665'GEODETIC SURVEY HORIZONTAL CONTROL DISK CEMENTED IN A DRILL HOLE IN A
 JW1665'0.5 FT (15.2 CM) ROUND CONCRETE POST.  IT IS 145.0 FT (44.2 M) SOUTH
 JW1665'OF THE CENTERLINE OF THE EASTBOUND LANES OF INTERSTATE HIGHWAY 68,
 JW1665'73.0 FT (22.3 M) SOUTH OF AN WEST TO EAST FLOWING RIP-RAP DITCH,
 JW1665'334.0 FT (101.8 M) SOUTHWEST OF THE SOUTHWEST END OF THE MOST
 JW1665'SOUTHERLY BRIDGE PARAPET WALL FOR A BRIDGE NUMBERED 1141 WHERE THE
 JW1665'EASTBOUND LANE OF INTERSTATE HIGHWAY 68 PASSES OVER TOWN CREEK AND
 JW1665'ABOUT 8.0 FT (2.4 M) LOWER THAN THE SURFACE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8013 ***********************************************************************
 AJ8013  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8013  DESIGNATION -  GILROY
 AJ8013  PID         -  AJ8013
 AJ8013  STATE/COUNTY-  MD/CHARLES
 AJ8013  COUNTRY     -  US
 AJ8013  USGS QUAD   -  NANJEMOY (2016)
 AJ8013
 AJ8013                         *CURRENT SURVEY CONTROL
 AJ8013  ______________________________________________________________________
 AJ8013* NAD 83(2011) POSITION- 38 29 53.55996(N) 077 12 38.91098(W)   ADJUSTED
 AJ8013* NAD 83(2011) ELLIP HT-    11.040 (meters)        (06/27/12)   ADJUSTED
 AJ8013* NAD 83(2011) EPOCH   -  2010.00
 AJ8013* NAVD 88 ORTHO HEIGHT -    43.6   (meters)      143.    (feet) GPS OBS
 AJ8013  ______________________________________________________________________
 AJ8013  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8013  GEOID HEIGHT    -        -32.553 (meters)                     GEOID99
 AJ8013  GEOID HEIGHT    -        -32.621 (meters)                     GEOID18
 AJ8013  NAD 83(2011) X  -  1,106,424.576 (meters)                     COMP
 AJ8013  NAD 83(2011) Y  - -4,874,201.866 (meters)                     COMP
 AJ8013  NAD 83(2011) Z  -  3,948,880.856 (meters)                     COMP
 AJ8013  LAPLACE CORR    -         -2.26  (seconds)                    DEFLEC18
 AJ8013
 AJ8013  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8013  Standards:
 AJ8013         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8013            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8013  -------------------------------------------------------------------
 AJ8013  NETWORK    0.58   1.29           0.26   0.21   0.66     -0.00669610
 AJ8013  -------------------------------------------------------------------
 AJ8013  Click here for local accuracies and other accuracy information.
 AJ8013
 AJ8013.The horizontal coordinates were established by GPS observations
 AJ8013.and adjusted by the National Geodetic Survey in June 2012.
 AJ8013
 AJ8013.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8013.been affixed to the stable North American tectonic plate. See 
 AJ8013.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8013
 AJ8013.The horizontal coordinates are valid at the epoch date displayed above
 AJ8013.which is a decimal equivalence of Year/Month/Day.
 AJ8013
 AJ8013.The orthometric height was determined by GPS observations and a
 AJ8013.high-resolution geoid model.
 AJ8013
 AJ8013.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8013.GEOID18 height accuracy estimate available here.
 AJ8013
 AJ8013.Click photographs - Photos may exist for this station.
 AJ8013
 AJ8013.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8013
 AJ8013.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8013
 AJ8013.The ellipsoidal height was determined by GPS observations
 AJ8013.and is referenced to NAD 83.
 AJ8013
 AJ8013. The following values were computed from the NAD 83(2011) position.
 AJ8013
 AJ8013;                    North         East     Units Scale Factor Converg.
 AJ8013;SPC MD       -    92,325.985   381,610.669   MT  0.99997143   -0 07 56.3
 AJ8013;SPC MD       -   302,906.17  1,252,001.00   sFT  0.99997143   -0 07 56.3
 AJ8013;UTM  18      - 4,263,410.958   307,206.547   MT  1.00005776   -1 22 35.9
 AJ8013
 AJ8013!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8013!SPC MD       -   0.99999827  x   0.99997143  =   0.99996970
 AJ8013!UTM  18      -   0.99999827  x   1.00005776  =   1.00005603
 AJ8013
 AJ8013_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH0720663410(NAD 83)
 AJ8013
 AJ8013                          SUPERSEDED SURVEY CONTROL
 AJ8013
 AJ8013  NAD 83(2007)-  38 29 53.56024(N)    077 12 38.91171(W) AD(2002.00) 0
 AJ8013  ELLIP H (02/10/07)   11.067  (m)                       GP(2002.00)    
 AJ8013  NAD 83(1991)-  38 29 53.56025(N)    077 12 38.91178(W) AD(       ) A
 AJ8013  ELLIP H (02/12/02)   11.068  (m)                       GP(       ) 4 1
 AJ8013
 AJ8013.Superseded values are not recommended for survey control.
 AJ8013
 AJ8013.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8013.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8013
 AJ8013_MARKER: DD = SURVEY DISK
 AJ8013_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8013_STAMPING: GILROY 2000
 AJ8013_MARK LOGO: MDSHA
 AJ8013_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ8013_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8013+STABILITY: SURFACE MOTION
 AJ8013_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8013+SATELLITE: SATELLITE OBSERVATIONS - October 22, 2014
 AJ8013
 AJ8013  HISTORY     - Date     Condition        Report By
 AJ8013  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ8013  HISTORY     - 20141022 GOOD             GPSSS
 AJ8013
 AJ8013                          STATION DESCRIPTION
 AJ8013
 AJ8013'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8013'THE STATION IS LOCATED ABOUT 13.0 MILES (20.9 KM) WEST OF LA PLATA,
 AJ8013'AND 18.3 MILES (29.5 KM) SOUTHWEST OF WALDORF, IN THE TOWN OF
 AJ8013'DONCASTER.  TO REACH THE STATION FROM U.S.HIGHWAY 301 AND STATE
 AJ8013'HIGHWAY 6 IN LA PLATA, GO WEST ALONG STATE HIGHWAY 6 FOR 11.3 MILES
 AJ8013'(18.2 KM) TO STATE HIGHWAY 425 IN IRONSIDES.  CONTINUE WEST ALONG
 AJ8013'STATE HIGHWAY 6 FOR 2.9 MILES (4.7 KM) TO STATE HIGHWAY 344 LEADING
 AJ8013'NORTHWEST AND GILROY ROAD LEADING SOUTHEAST AND THE STATION IN THE
 AJ8013'NORTHWEST QUADRANT OF THE INTERSECTION.  THE STATION IS A MARYLAND
 AJ8013'STATE HIGHWAY SURVEY DISK SET IN THE TOP OF A 12 INCH ROUND CONCRETE
 AJ8013'MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS 26.6 FEET (8.1 M) WEST
 AJ8013'OF THE CENTER LINE OF STATE HIGHWAY 344, 77.0 FEET (23.5 M) NORTH OF
 AJ8013'THE CENTER LINE OF STATE HIGHWAY 6, 72.7 FEET (22.2 M) EAST-NORTHEAST
 AJ8013'OF POWER POLE NUMBER C AND P 94, 71.7 FEET (21.9 M) EAST-NORTHEAST OF
 AJ8013'A CARSONITE WITNESS POST, 86.5 FEET (26.4 M) WEST-SOUTHWEST AND ACROSS
 AJ8013'ROUTE 344 FROM POWER POLE NUMBER 41054, 89.5 FEET (27.3 M) NORTHWEST
 AJ8013'AND ACROSS ROUTE 344 FROM A POWER POLE WITH NO NUMBERS, AND ABOUT 1
 AJ8013'FOOT (0.3 M) LOWER THAN THE SURFACE OF STATE HIGHWAY 344.
 AJ8013
 AJ8013                          STATION RECOVERY (2014)
 AJ8013
 AJ8013'RECOVERY NOTE BY GPS SALES AND SERVICES 2014 (BB)
 AJ8013'RECOVERED BY BARRY BERWAGER OF HLS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7169 ***********************************************************************
 HV7169  DESIGNATION -  GINGER
 HV7169  PID         -  HV7169
 HV7169  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7169  COUNTRY     -  US
 HV7169  USGS QUAD   -  SOUTH RIVER (2016)
 HV7169
 HV7169                         *CURRENT SURVEY CONTROL
 HV7169  ______________________________________________________________________
 HV7169* NAD 83(1993) POSITION- 38 57 03.62171(N) 076 32 45.71215(W)   ADJUSTED
 HV7169* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7169  ______________________________________________________________________
 HV7169  GEOID HEIGHT    -        -33.266 (meters)                     GEOID18
 HV7169  LAPLACE CORR    -         -4.35  (seconds)                    DEFLEC18
 HV7169  HORZ ORDER      -  THIRD
 HV7169
 HV7169.The horizontal coordinates were established by classical geodetic methods
 HV7169.and adjusted by the National Geodetic Survey in November 1994.
 HV7169
 HV7169.The orthometric height was scaled from a topographic map.
 HV7169
 HV7169.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7169.GEOID18 height accuracy estimate available here.
 HV7169
 HV7169.Click photographs - Photos may exist for this station.
 HV7169
 HV7169.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7169
 HV7169. The following values were computed from the NAD 83(1993) position.
 HV7169
 HV7169;                    North         East     Units Scale Factor Converg.
 HV7169;SPC MD       -   142,665.250   439,350.693   MT  0.99995071   +0 17 05.7
 HV7169;SPC MD       -   468,060.91  1,441,436.40   sFT  0.99995071   +0 17 05.7
 HV7169;UTM  18      - 4,312,476.122   366,030.730   MT  0.99982100   -0 58 19.4
 HV7169
 HV7169!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7169!SPC MD       -   1.00000510  x   0.99995071  =   0.99995581
 HV7169!UTM  18      -   1.00000510  x   0.99982100  =   0.99982610
 HV7169
 HV7169:                Primary Azimuth Mark                     Grid Az
 HV7169:SPC MD       -  BREWER                                   157 42 47.2
 HV7169:UTM  18      -  BREWER                                   158 58 12.3
 HV7169
 HV7169_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6603012476(NAD 83)
 HV7169
 HV7169|---------------------------------------------------------------------|
 HV7169| PID    Reference Object                     Distance      Geod. Az  |
 HV7169|                                                           dddmmss.s |
 HV7169| CX2799 GINGER RM                             7.810 METERS 01123     |
 HV7169| HV7170 BREWER                              APPROX. 0.7 KM 1575952.9 |
 HV7169| HV7148 BRIDGE                              APPROX. 0.8 KM 2533307.5 |
 HV7169|---------------------------------------------------------------------|
 HV7169
 HV7169                          SUPERSEDED SURVEY CONTROL
 HV7169
 HV7169  NAD 83(1986)-  38 57 03.61817(N)    076 32 45.72309(W) AD(       ) 3
 HV7169  NAD 27      -  38 57 03.19100(N)    076 32 46.83400(W) AD(       ) 3
 HV7169  USSD        -  38 57 03.57000(N)    076 32 46.66000(W) AD(       ) 3
 HV7169
 HV7169.Superseded values are not recommended for survey control.
 HV7169
 HV7169.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7169.See file dsdata.pdf to determine how the superseded data were derived.
 HV7169
 HV7169
 HV7169  HISTORY     - Date     Condition        Report By
 HV7169  HISTORY     - 1899     MONUMENTED       CGS
 HV7169  HISTORY     - 1906     GOOD             CGS
 HV7169  HISTORY     - 1957     MARK NOT FOUND   USGS
 HV7169
 HV7169                          STATION DESCRIPTION
 HV7169
 HV7169'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 HV7169'ON THE NE SIDE OF SOUTH RIVER, ON A BLUFF POINT KNOWN AS POPLAR
 HV7169'POINT, ABOUT 1/2 MILE E OF SOUTH RIVER BRIDGE.  STATION IS 17 FEET
 HV7169'BACK FROM EDGE OF BLUFF 35 FEET HIGH.
 HV7169'
 HV7169'STATION MARKED BY CENTER OF 4-INCH TILE PIPE WITH TOP 2 INCHES
 HV7169'BELOW THE SURFACE OF GROUND.
 HV7169'
 HV7169'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7169'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7169'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7169'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7169'IS 7.81 METERS (25.62 FEET) FROM STATION IN BEARING N 11 DEG 23
 HV7169'MIN E.  DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV7169'REFERENCE ARE AS FOLLOWS--CUPOLA ON BARN, 1/2 MILE, S 6 DEG 33
 HV7169'MIN W.  PEAK OF WHARF HOUSE, 1/2 MILE, S 69 DEG 20 MIN W. NAIL IN
 HV7169'BLAZE IN 18-INCH OAK TREE, 9.05 METERS (29.69 FEET), N 66 DEG 49
 HV7169'MIN W.  PEAK OF EDGEWATER POST OFFICE, 1/2 MILE, N 64 DEG 57 MIN
 HV7169'W.  NAIL IN BLAZE IN 2-INCH MULBERRY TREE, 12.27 METERS (40.3
 HV7169'FEET), N 40 DEG 58 MIN W.  NAIL IN BLAZE IN 8-INCH LOCUST TREE,
 HV7169'5.92 METERS (19.42 FEET), S 78 DEG 39 MIN E.  WAGGAMANS WINDMILL,
 HV7169'3/4 MILE, S 69 DEG 18 MIN E.  N CHIMNEY OF ALMSHOUSE, 3/4 MILE, S
 HV7169'27 DEG 20 MIN E.
 HV7169
 HV7169                          STATION RECOVERY (1957)
 HV7169
 HV7169'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV7169'STATION DESTROYED.  WASHED AWAY BY EROSION OF BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8286 ***********************************************************************
 HV8286  DESIGNATION -  GINNS ECC
 HV8286  PID         -  HV8286
 HV8286  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8286  COUNTRY     -  US
 HV8286  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8286
 HV8286                         *CURRENT SURVEY CONTROL
 HV8286  ______________________________________________________________________
 HV8286* NAD 83(2011) POSITION- 38 57 24.54923(N) 076 58 10.47384(W)   ADJUSTED
 HV8286* NAD 83(2011) ELLIP HT-   -20.793 (meters)        (06/27/12)   ADJUSTED
 HV8286* NAD 83(2011) EPOCH   -  2010.00
 HV8286* NAVD 88 ORTHO HEIGHT -    11.3   (meters)       37.    (feet) VERTCON3
 HV8286  ______________________________________________________________________
 HV8286  GEOID HEIGHT    -        -32.091 (meters)                     GEOID18
 HV8286  NAD 83(2011) X  -  1,119,749.755 (meters)                     COMP
 HV8286  NAD 83(2011) Y  - -4,838,446.019 (meters)                     COMP
 HV8286  NAD 83(2011) Z  -  3,988,577.396 (meters)                     COMP
 HV8286  LAPLACE CORR    -         -3.92  (seconds)                    DEFLEC18
 HV8286
 HV8286  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8286  Standards:
 HV8286         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8286            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8286  -------------------------------------------------------------------
 HV8286  NETWORK    1.61   3.16           0.65   0.65   1.61     -0.30169691
 HV8286  -------------------------------------------------------------------
 HV8286  Click here for local accuracies and other accuracy information.
 HV8286
 HV8286.The horizontal coordinates were established by GPS observations
 HV8286.and adjusted by the National Geodetic Survey in June 2012.
 HV8286
 HV8286.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8286.been affixed to the stable North American tectonic plate. See 
 HV8286.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8286
 HV8286.The horizontal coordinates are valid at the epoch date displayed above
 HV8286.which is a decimal equivalence of Year/Month/Day.
 HV8286
 HV8286.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8286.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8286
 HV8286.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8286.GEOID18 height accuracy estimate available here.
 HV8286
 HV8286.Click photographs - Photos may exist for this station.
 HV8286
 HV8286.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8286
 HV8286.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8286
 HV8286.The ellipsoidal height was determined by GPS observations
 HV8286.and is referenced to NAD 83.
 HV8286
 HV8286. The following values were computed from the NAD 83(2011) position.
 HV8286
 HV8286;                    North         East     Units Scale Factor Converg.
 HV8286;SPC MD       -   143,213.164   402,636.987   MT  0.99995084   +0 01 08.7
 HV8286;SPC MD       -   469,858.52  1,320,984.85   sFT  0.99995084   +0 01 08.7
 HV8286;UTM  18      - 4,313,829.434   329,340.226   MT  0.99995864   -1 14 19.1
 HV8286
 HV8286!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8286!SPC MD       -   1.00000326  x   0.99995084  =   0.99995410
 HV8286!UTM  18      -   1.00000326  x   0.99995864  =   0.99996190
 HV8286
 HV8286_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2934013829(NAD 83)
 HV8286
 HV8286                          SUPERSEDED SURVEY CONTROL
 HV8286
 HV8286  NAD 83(2007)-  38 57 24.54984(N)    076 58 10.47465(W) AD(2002.00) 0
 HV8286  ELLIP H (02/10/07)  -20.780  (m)                       GP(2002.00)    
 HV8286  ELLIP H (09/18/02)  -20.790  (m)                       GP(       ) 4 2
 HV8286  NAD 83(1993)-  38 57 24.55017(N)    076 58 10.47425(W) AD(       ) 1
 HV8286  ELLIP H (11/14/94)  -20.797  (m)                       GP(       ) 4 2
 HV8286  NAD 83(1991)-  38 57 24.54978(N)    076 58 10.47425(W) AD(       ) 1
 HV8286  NAD 83(1986)-  38 57 24.54845(N)    076 58 10.48501(W) AD(       ) 1
 HV8286  NGVD 29 (05/23/89)   11.5    (m)  RAPSU86  model used  GPS OBS        
 HV8286
 HV8286.Superseded values are not recommended for survey control.
 HV8286
 HV8286.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8286.See file dsdata.pdf to determine how the superseded data were derived.
 HV8286
 HV8286_MARKER: B = BOLT
 HV8286_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV8286_MARK LOGO: DEWDAV
 HV8286_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8286_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8286_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8286+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2003
 HV8286
 HV8286  HISTORY     - Date     Condition        Report By
 HV8286  HISTORY     - 1988     MONUMENTED       DEWDAV
 HV8286  HISTORY     - 20030516 GOOD             DEWDAV
 HV8286
 HV8286                          STATION DESCRIPTION
 HV8286
 HV8286'DESCRIBED BY DEWBERRY DAVIS 1988
 HV8286'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MD JUST OVER THE
 HV8286'DISTRICT OF COLUMBIA NORTHEAST BOUNDARY LINE.
 HV8286'TO REACH THE STATION FROM THE INTERSECTION OF QUEENS CHAPPEL AND AGER
 HV8286'ROADS, GO NORTH ON AGER ROAD FOR 0.3 MILE TO THE DRIVEWAY TO GINNS
 HV8286'OFFICE PRODUCTS ON THE LEFT, TURN LEFT INTO THE DRIVE AND GO 0.2 MILE
 HV8286'TO THE STATION ON THE RIGHT IN A FIELD NE OF THE SE CORNER OGF THE
 HV8286'GINNS BUILDING.
 HV8286'THE STATION MARK IS A PUNCHED BRASS BOLT SET IN CONCRETE IN A 4 INCH 3
 HV8286'FOOT LONG IRON PIPE FLUSH WITH THE GROUND.  THE STATION IS 52 FEET
 HV8286'NORTH OF THE NORTH EDGE OF PAVEMENT OF THE DRIVE, AND 83 FEET EAST OF
 HV8286'THE EAST CURB OF THE PARKING LOT EAST OF THE GINNS BUILDING.
 HV8286'TO REACH THE AZIMUTH MARK, GO BACK TO THE INTERSECTION OD AGER ROAD
 HV8286'AND THE DRIVWAY INTO THE GINNS PROPERTY, TURN LEFT AND GO NW ON AGER
 HV8286'ROAD FOR APPROXIMATELY 340 FEET TO AZIMUTH MARK IN THE MEDIAN BETWEEN
 HV8286'THE TWO LANES OF AGER ROAD.  THE MARK IS AN UNSTAMPED 3.5 INCH METRO
 HV8286'CONTROL SURVEY DISK SET IN CONCRETE 6 INCHES BELOW GROUND IN A 6 INCH
 HV8286'ROUND PVC MONUMENT BOX.  THE MARK IS IN A GRASS STRIP 12 FEET NW OF
 HV8286'THE NW EDGE OF CONCRETE PAVEMENT OF THE MEDIAN.
 HV8286
 HV8286                          STATION RECOVERY (2003)
 HV8286
 HV8286'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (KEC)
 HV8286'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7998 ***********************************************************************
 AJ7998  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7998  DESIGNATION -  GIRDLE
 AJ7998  PID         -  AJ7998
 AJ7998  STATE/COUNTY-  MD/WORCESTER
 AJ7998  COUNTRY     -  US
 AJ7998  USGS QUAD   -  GIRDLETREE (2016)
 AJ7998
 AJ7998                         *CURRENT SURVEY CONTROL
 AJ7998  ______________________________________________________________________
 AJ7998* NAD 83(2011) POSITION- 38 06 46.20539(N) 075 23 26.92826(W)   ADJUSTED
 AJ7998* NAD 83(2011) ELLIP HT-   -24.874 (meters)        (06/27/12)   ADJUSTED
 AJ7998* NAD 83(2011) EPOCH   -  2010.00
 AJ7998* NAVD 88 ORTHO HEIGHT -    11.403 (meters)       37.41  (feet) ADJUSTED
 AJ7998  ______________________________________________________________________
 AJ7998  GEOID HEIGHT    -        -36.294 (meters)                     GEOID18
 AJ7998  NAD 83(2011) X  -  1,267,349.805 (meters)                     COMP
 AJ7998  NAD 83(2011) Y  - -4,862,234.730 (meters)                     COMP
 AJ7998  NAD 83(2011) Z  -  3,915,290.370 (meters)                     COMP
 AJ7998  LAPLACE CORR    -         -0.82  (seconds)                    DEFLEC18
 AJ7998  DYNAMIC HEIGHT  -         11.395 (meters)       37.39  (feet) COMP
 AJ7998  MODELED GRAVITY -    979,977.3   (mgal)                       NAVD 88
 AJ7998
 AJ7998  VERT ORDER      -  SECOND    CLASS I
 AJ7998
 AJ7998  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7998  Standards:
 AJ7998         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7998            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7998  -------------------------------------------------------------------
 AJ7998  NETWORK    0.84   1.67           0.36   0.33   0.85     -0.02707596
 AJ7998  -------------------------------------------------------------------
 AJ7998  Click here for local accuracies and other accuracy information.
 AJ7998
 AJ7998.The horizontal coordinates were established by GPS observations
 AJ7998.and adjusted by the National Geodetic Survey in June 2012.
 AJ7998
 AJ7998.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7998.been affixed to the stable North American tectonic plate. See 
 AJ7998.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7998
 AJ7998.The horizontal coordinates are valid at the epoch date displayed above
 AJ7998.which is a decimal equivalence of Year/Month/Day.
 AJ7998
 AJ7998.The orthometric height was determined by differential leveling and
 AJ7998.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7998.in November 2003.
 AJ7998
 AJ7998.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7998.GEOID18 height accuracy estimate available here.
 AJ7998
 AJ7998.Click photographs - Photos may exist for this station.
 AJ7998
 AJ7998.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7998
 AJ7998.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7998
 AJ7998.The ellipsoidal height was determined by GPS observations
 AJ7998.and is referenced to NAD 83.
 AJ7998
 AJ7998.The dynamic height is computed by dividing the NAVD 88
 AJ7998.geopotential number by the normal gravity value computed on the
 AJ7998.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7998.degrees latitude (g = 980.6199 gals.).
 AJ7998
 AJ7998.The modeled gravity was interpolated from observed gravity values.
 AJ7998
 AJ7998. The following values were computed from the NAD 83(2011) position.
 AJ7998
 AJ7998;                    North         East     Units Scale Factor Converg.
 AJ7998;SPC MD       -    50,770.902   541,120.014   MT  1.00003783   +1 00 35.9
 AJ7998;SPC MD       -   166,570.87  1,775,324.58   sFT  1.00003783   +1 00 35.9
 AJ7998;UTM  18      - 4,218,406.517   465,740.204   MT  0.99961446   -0 14 28.4
 AJ7998
 AJ7998!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7998!SPC MD       -   1.00000390  x   1.00003783  =   1.00004173
 AJ7998!UTM  18      -   1.00000390  x   0.99961446  =   0.99961836
 AJ7998
 AJ7998_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6574018406(NAD 83)
 AJ7998
 AJ7998                          SUPERSEDED SURVEY CONTROL
 AJ7998
 AJ7998  NAD 83(2007)-  38 06 46.20567(N)    075 23 26.92898(W) AD(2002.00) 0
 AJ7998  ELLIP H (02/10/07)  -24.851  (m)                       GP(2002.00)    
 AJ7998  NAD 83(1991)-  38 06 46.20561(N)    075 23 26.92891(W) AD(       ) A
 AJ7998  ELLIP H (02/12/02)  -24.848  (m)                       GP(       ) 4 1
 AJ7998  NAVD 88 (02/12/02)   11.4    (m)  GEOID99  model used  GPS OBS        
 AJ7998
 AJ7998.Superseded values are not recommended for survey control.
 AJ7998
 AJ7998.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7998.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7998
 AJ7998_MARKER: DD = SURVEY DISK
 AJ7998_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7998_STAMPING: GIRDLE 2000
 AJ7998_MARK LOGO: MDSHA
 AJ7998_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ7998_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7998+STABILITY: SURFACE MOTION
 AJ7998_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7998+SATELLITE: SATELLITE OBSERVATIONS - November 25, 2013
 AJ7998
 AJ7998  HISTORY     - Date     Condition        Report By
 AJ7998  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ7998  HISTORY     - 20010419 GOOD             MDSHA
 AJ7998  HISTORY     - 20040120 GOOD             MDSHA
 AJ7998  HISTORY     - 20131125 GOOD             WATER
 AJ7998
 AJ7998                          STATION DESCRIPTION
 AJ7998
 AJ7998'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7998'THE STATION IS LOCATED ABOUT 1.5 NORTH OF GIRDLETREE, 4.7 MILES (7.6
 AJ7998'KM) SOUTH OF SNOW HILL, AND 10.0 MILES (16.1 KM) EAST OF POCOMOKE
 AJ7998'CITY.  TO REACH THE STATION FROM THE COURTHOUSE IN SNOW HILL GO
 AJ7998'SOUTHWEST ALONG STATE HIGHWAY 12 FOR 0.15 MILES.  (0.24 KM) TURN LEFT
 AJ7998'AND GO SOUTH ALONG STATE HIGHWAY 12 FOR 4.7 MILES (7.6 KM) TO THE COOL
 AJ7998'SPRING UNITED METHODIST CHURCH AND THE STATION ON THE LEFT. NOTE= THE
 AJ7998'STATION IS ALSO 1.45 MILES (2.33 KM) NORTH ALONG STATE HIGHWAY 12 FROM
 AJ7998'THE POST OFFICE IN GIRDLETREE.  THE STATION IS A MARYLAND STATE
 AJ7998'HIGHWAY SURVEY DISK SET IN THE TOP OF A 12 INCH ROUND CONCRETE
 AJ7998'MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS 116.5 FEET (35.5 M)
 AJ7998'EAST OF THE CENTER OF THE HIGHWAY, 84.0 FEET (25.6 M) SOUTH OF THE
 AJ7998'MACADAM ENTRANCE TO THE CHURCH, 13.0 FEET (4.0 M) WEST-NORTHWEST OF
 AJ7998'THE CENTER OF OLD STATE HIGHWAY 12, 37.2 FEET (11.3 M) WEST OF THE
 AJ7998'SOUTHWEST CORNER OF THE WRIGHT HEADSTONE, 62.5 FEET (19.1 M) NORTH OF
 AJ7998'TELEPHONE POLE NUMBER 196, AND 62.0 FEET (18.9 M) NORTH OF A CARSONITE
 AJ7998'WITNESS POST
 AJ7998
 AJ7998                          STATION RECOVERY (2001)
 AJ7998
 AJ7998'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ7998'RECOVERED AS DESCRIBED.
 AJ7998
 AJ7998                          STATION RECOVERY (2004)
 AJ7998
 AJ7998'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (SFK)
 AJ7998'RECOVERED AS DESCRIBED.
 AJ7998
 AJ7998                          STATION RECOVERY (2013)
 AJ7998
 AJ7998'RECOVERY NOTE BY WATERSHED SCIENCES 2013 (EG)
 AJ7998'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7684 ***********************************************************************
 AC7684  DESIGNATION -  GIS 1
 AC7684  PID         -  AC7684
 AC7684  STATE/COUNTY-  MD/BALTIMORE
 AC7684  COUNTRY     -  US
 AC7684  USGS QUAD   -  SPARROWS POINT (2016)
 AC7684
 AC7684                         *CURRENT SURVEY CONTROL
 AC7684  ______________________________________________________________________
 AC7684* NAD 83(2011) POSITION- 39 13 35.77730(N) 076 29 35.72588(W)   ADJUSTED
 AC7684* NAD 83(2011) ELLIP HT-   -30.970 (meters)        (06/27/12)   ADJUSTED
 AC7684* NAD 83(2011) EPOCH   -  2010.00
 AC7684* NAVD 88 ORTHO HEIGHT -     2.049 (meters)        6.72  (feet) ADJUSTED
 AC7684  ______________________________________________________________________
 AC7684  GEOID HEIGHT    -        -33.011 (meters)                     GEOID18
 AC7684  NAD 83(2011) X  -  1,155,521.397 (meters)                     COMP
 AC7684  NAD 83(2011) Y  - -4,810,598.915 (meters)                     COMP
 AC7684  NAD 83(2011) Z  -  4,011,816.842 (meters)                     COMP
 AC7684  LAPLACE CORR    -         -0.91  (seconds)                    DEFLEC18
 AC7684  DYNAMIC HEIGHT  -          2.048 (meters)        6.72  (feet) COMP
 AC7684  MODELED GRAVITY -    980,095.8   (mgal)                       NAVD 88
 AC7684
 AC7684  VERT ORDER      -  THIRD
 AC7684
 AC7684  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7684  Standards:
 AC7684         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7684            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7684  -------------------------------------------------------------------
 AC7684  NETWORK    0.72   1.16           0.35   0.19   0.59     -0.01454892
 AC7684  -------------------------------------------------------------------
 AC7684  Click here for local accuracies and other accuracy information.
 AC7684
 AC7684.The horizontal coordinates were established by GPS observations
 AC7684.and adjusted by the National Geodetic Survey in June 2012.
 AC7684
 AC7684.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7684.been affixed to the stable North American tectonic plate. See 
 AC7684.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7684
 AC7684.The horizontal coordinates are valid at the epoch date displayed above
 AC7684.which is a decimal equivalence of Year/Month/Day.
 AC7684
 AC7684.The orthometric height was determined by differential leveling and
 AC7684.adjusted by the NATIONAL GEODETIC SURVEY
 AC7684.in February 1998.
 AC7684
 AC7684.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7684.GEOID18 height accuracy estimate available here.
 AC7684
 AC7684.Click photographs - Photos may exist for this station.
 AC7684
 AC7684.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7684
 AC7684.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7684
 AC7684.The ellipsoidal height was determined by GPS observations
 AC7684.and is referenced to NAD 83.
 AC7684
 AC7684.The dynamic height is computed by dividing the NAVD 88
 AC7684.geopotential number by the normal gravity value computed on the
 AC7684.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7684.degrees latitude (g = 980.6199 gals.).
 AC7684
 AC7684.The modeled gravity was interpolated from observed gravity values.
 AC7684
 AC7684. The following values were computed from the NAD 83(2011) position.
 AC7684
 AC7684;                    North         East     Units Scale Factor Converg.
 AC7684;SPC MD       -   173,283.753   443,755.342   MT  0.99996855   +0 19 05.0
 AC7684;SPC MD       -   568,515.11  1,455,887.32   sFT  0.99996855   +0 19 05.0
 AC7684;UTM  18      - 4,342,985.961   371,106.743   MT  0.99980456   -0 56 40.0
 AC7684
 AC7684!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7684!SPC MD       -   1.00000486  x   0.99996855  =   0.99997341
 AC7684!UTM  18      -   1.00000486  x   0.99980456  =   0.99980942
 AC7684
 AC7684:                Primary Azimuth Mark                     Grid Az
 AC7684:SPC MD       -  GIS 1A                                   185 50 54.1
 AC7684:UTM  18      -  GIS 1A                                   187 06 39.1
 AC7684
 AC7684_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7110642985(NAD 83)
 AC7684
 AC7684|---------------------------------------------------------------------|
 AC7684| PID    Reference Object                     Distance      Geod. Az  |
 AC7684|                                                           dddmmss.s |
 AC7684| AC7730 GIS 1A                              APPROX. 1.7 KM 1860959.1 |
 AC7684|---------------------------------------------------------------------|
 AC7684
 AC7684                          SUPERSEDED SURVEY CONTROL
 AC7684
 AC7684  NAD 83(2007)-  39 13 35.77757(N)    076 29 35.72667(W) AD(2002.00) 0
 AC7684  ELLIP H (02/10/07)  -30.952  (m)                       GP(2002.00)    
 AC7684  ELLIP H (08/30/02)  -30.941  (m)                       GP(       ) 4 2
 AC7684  NAD 83(1991)-  39 13 35.77753(N)    076 29 35.72622(W) AD(       ) 1
 AC7684  ELLIP H (04/08/97)  -31.031  (m)                       GP(       ) 3 1
 AC7684  NAVD 88 (04/08/97)    2.0    (m)  GEOID93  model used  GPS OBS        
 AC7684
 AC7684.Superseded values are not recommended for survey control.
 AC7684
 AC7684.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7684.See file dsdata.pdf to determine how the superseded data were derived.
 AC7684
 AC7684_MARKER: DD = SURVEY DISK
 AC7684_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7684_STAMPING: NO. GIS-1 1995
 AC7684_MARK LOGO: MD-005
 AC7684_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7684_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7684+STABILITY: SURFACE MOTION
 AC7684_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7684+SATELLITE: SATELLITE OBSERVATIONS - October 20, 2010
 AC7684
 AC7684  HISTORY     - Date     Condition        Report By
 AC7684  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7684  HISTORY     - 20040406 GOOD             URS
 AC7684  HISTORY     - 20080228 GOOD             DEWDAV
 AC7684  HISTORY     - 20090417 GOOD             JCLS
 AC7684  HISTORY     - 20101020 GOOD             JCLS
 AC7684
 AC7684                          STATION DESCRIPTION
 AC7684
 AC7684'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7684'STATION IS LOCATED ABOUT 6.5 MI (10.5 KM) SOUTHEAST OF THE CENTER OF
 AC7684'BALTIMORE AT SPARROWS POINT. TO REACH STATION FROM I-695 (BELTWAY)
 AC7684'TAKE EXIT 42 TO NORTH POINT BLVD (RT 151)  FROM THE I-695 OVERPASS
 AC7684'OVER NORTH POINT BLVD GO SOUTH 1.8 MI (2.90 KM) ON NORTH POINT BLVD TO
 AC7684'THE INTERSECTION WITH 7TH STREET. TURN RIGHT ON 7TH ST. AND GO 0.2 MI
 AC7684'(0.3 KM) TO INTERSECTION WITH PENWOOD ROAD. TURN RIGHT ON PENWOOD RD
 AC7684'FOR 0.2 MI (0.3 KM) TO THE INTERSECTION WITH TINMILL ROAD. TURN LEFT
 AC7684'ON TINMILL RD AND GO 0.9 MI (1.4 KM) TO RIVERSIDE DRIVE. TURN LEFT ON
 AC7684'RIVERSIDE DR. AND GO 0.05 MI (0.08 KM) TO A PARKING LOT ON THE RIGHT.
 AC7684'GO THROUGH PARKING LOT NORTHWESTERLY 0.05 MI (0.08 KM) TO A STOP SIGN
 AC7684'AND AN ENTRANCE ROAD. CROSS ENTRANCE ROAD AND GO NORTHWESTERLY THROUGH
 AC7684'ANOTHER PARKING LOT TO THE NORTHWEST CORNER OF THE PARKING LOT AND
 AC7684'STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AC7684'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 7.75 FT
 AC7684'(2.36 M) WEST OF THE EDGE OF PAVE, 29.00 FT (8.84 M) SOUTH OF THE
 AC7684'CORNER OF THE PARKING LOT, 142.00 FT (43.28 M) NORTHEAST OF A CABLE
 AC7684'CROSSING SIGN POLE AND 41.50 FT (12.65 M) SOUTH OF THE TOP OF BANK OF
 AC7684'BEAR CREEK.
 AC7684
 AC7684                          STATION RECOVERY (2004)
 AC7684
 AC7684'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 AC7684'RECOVERED IN GOOD CONDITION.
 AC7684
 AC7684                          STATION RECOVERY (2008)
 AC7684
 AC7684'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7684'RECOVERED IN GOOD CONDITION.
 AC7684
 AC7684                          STATION RECOVERY (2009)
 AC7684
 AC7684'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2009 (MRY)
 AC7684'RECOVERED IN GOOD CONDITION.
 AC7684
 AC7684                          STATION RECOVERY (2010)
 AC7684
 AC7684'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2010
 AC7684'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6397 ***********************************************************************
 DG6397  DESIGNATION -  GIS 1
 DG6397  PID         -  DG6397
 DG6397  STATE/COUNTY-  MD/TALBOT
 DG6397  COUNTRY     -  US
 DG6397  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6397
 DG6397                         *CURRENT SURVEY CONTROL
 DG6397  ______________________________________________________________________
 DG6397* NAD 83(1986) POSITION- 38 46 07.14   (N) 076 12 18.49   (W)   HD_HELD1
 DG6397* NAVD 88 ORTHO HEIGHT -     1.513 (meters)        4.96  (feet) ADJUSTED
 DG6397  ______________________________________________________________________
 DG6397  GEOID HEIGHT    -        -34.413 (meters)                     GEOID18
 DG6397  DYNAMIC HEIGHT  -          1.512 (meters)        4.96  (feet) COMP
 DG6397  MODELED GRAVITY -    980,042.2   (mgal)                       NAVD 88
 DG6397
 DG6397  VERT ORDER      -  SECOND    CLASS I
 DG6397
 DG6397.The horizontal coordinates were determined by differentially corrected
 DG6397.hand held GPS observations or other comparable positioning techniques
 DG6397.and have an estimated accuracy of +/- 3 meters.
 DG6397
 DG6397.The orthometric height was determined by differential leveling and
 DG6397.adjusted by the NATIONAL GEODETIC SURVEY
 DG6397.in September 2004.
 DG6397
 DG6397.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6397.GEOID18 height accuracy estimate available here.
 DG6397
 DG6397.Click photographs - Photos may exist for this station.
 DG6397
 DG6397.The dynamic height is computed by dividing the NAVD 88
 DG6397.geopotential number by the normal gravity value computed on the
 DG6397.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6397.degrees latitude (g = 980.6199 gals.).
 DG6397
 DG6397.The modeled gravity was interpolated from observed gravity values.
 DG6397
 DG6397;                    North         East    Units  Estimated Accuracy
 DG6397;SPC MD       -   122,625.3     469,075.7     MT  (+/- 3 meters HH1 GPS) 
 DG6397
 DG6397_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9530491793(NAD 83)
 DG6397
 DG6397                          SUPERSEDED SURVEY CONTROL
 DG6397
 DG6397.No superseded survey control is available for this station.
 DG6397
 DG6397_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6397_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6397_STAMPING: NO GIS 1 1995
 DG6397_MARK LOGO: MD1370
 DG6397_PROJECTION: FLUSH
 DG6397_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6397_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6397+STABILITY: SURFACE MOTION
 DG6397_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6397+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 DG6397
 DG6397  HISTORY     - Date     Condition        Report By
 DG6397  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6397  HISTORY     - 19991213 GOOD             MDSHA
 DG6397  HISTORY     - 20231213 GOOD             MDSHA
 DG6397
 DG6397                          STATION DESCRIPTION
 DG6397
 DG6397'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6397'THE MARK IS LOCATED ABOUT 2.3 MI (3.7 KM) NORTHWEST OF ROYAL OAK, 1.9
 DG6397'MI (3.06 KM) WEST-NORTHWEST OF NEWCOMB AND 1.5 MI (2.41 KM) SOUTHEAST
 DG6397'OF ST MICHAELS.  TO REACH THE MARK FROM THE POST OFFICE IN ST.
 DG6397'MICHAELS, PROCEED SOUTHEAST ALONG MARYLAND STATE HIGHWAY 33 FOR 1.5
 DG6397'MILES (2.4 KM) TO A GRAVEL DRIVEWAY LEADING SOUTHWEST TO HOUSE NUMBER
 DG6397'25149 AND THE MARK ON THE RIGHT.  IT IS 31.0 FEET (9.4 M) SOUTHWEST OF
 DG6397'THE CENTER LINE OF THE HIGHWAY, 33.5 FEET (10.2 M) NORTH OF POWER POLE
 DG6397'NUMBER 29683-07987, 71.8 FEET (21.9 M) SOUTHEAST OF THE CENTER OF THE
 DG6397'MACADAM ENTRANCE TO SHANNAHAN ARTESIAN WELL COMPANY, 14.5 FEET (4.4 M)
 DG6397'NORTHWEST OF THE CENTER OF THE GRAVEL DRIVEWAY AND 5.5 FEET (1.7 M)
 DG6397'SOUTHWEST OF THE NORTHEAST END OF A 15 INCH (38 CM) BY 12 INCH (30 CM)
 DG6397'CORRUGATED METAL PIPE RUNNING UNDER THE GRAVEL DRIVEWAY.  IT IS A TOSM
 DG6397'DISK SET IN THE TOP OF AN 8-INCH (20 CM) ROUND CONCRETE MONUMENT FLUSH
 DG6397'WITH THE GROUND AND ABOUT 2 FEET (0.6 M) LOWER THAN THE SURFACE OF THE
 DG6397'HIGHWAY.
 DG6397
 DG6397                          STATION RECOVERY (2023)
 DG6397
 DG6397'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG6397'RECOVERED IN GOOD CONDITION.
 DG6397'
 DG6397'NOTE-ADD-THE MARK IS 126.9 FT (38.7 M) NORTH OF A UTILITY POLE
 DG6397'NUMBERED DPL 6782-134 AND DPL 29684-07981 AND 72.2 FT (22.0 M)
 DG6397'SOUTHEAST OF THE CENTERLINE OF A GRAVEL ENTRANCE TO 25145 SOUTH TALBOT
 DG6397'STREET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7693 ***********************************************************************
 AC7693  DESIGNATION -  GIS 10
 AC7693  PID         -  AC7693
 AC7693  STATE/COUNTY-  MD/BALTIMORE
 AC7693  COUNTRY     -  US
 AC7693  USGS QUAD   -  MIDDLE RIVER (2016)
 AC7693
 AC7693                         *CURRENT SURVEY CONTROL
 AC7693  ______________________________________________________________________
 AC7693* NAD 83(2011) POSITION- 39 17 02.01115(N) 076 29 07.94652(W)   ADJUSTED
 AC7693* NAD 83(2011) ELLIP HT-   -26.746 (meters)        (06/27/12)   ADJUSTED
 AC7693* NAD 83(2011) EPOCH   -  2010.00
 AC7693* NAVD 88 ORTHO HEIGHT -     6.235 (meters)       20.46  (feet) ADJUSTED
 AC7693  ______________________________________________________________________
 AC7693  GEOID HEIGHT    -        -32.979 (meters)                     GEOID18
 AC7693  NAD 83(2011) X  -  1,155,229.553 (meters)                     COMP
 AC7693  NAD 83(2011) Y  - -4,806,533.396 (meters)                     COMP
 AC7693  NAD 83(2011) Z  -  4,016,744.295 (meters)                     COMP
 AC7693  LAPLACE CORR    -         -2.11  (seconds)                    DEFLEC18
 AC7693  DYNAMIC HEIGHT  -          6.232 (meters)       20.45  (feet) COMP
 AC7693  MODELED GRAVITY -    980,101.0   (mgal)                       NAVD 88
 AC7693
 AC7693  VERT ORDER      -  THIRD
 AC7693
 AC7693  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7693  Standards:
 AC7693         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7693            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7693  -------------------------------------------------------------------
 AC7693  NETWORK    0.80   1.98           0.38   0.24   1.01     -0.05154689
 AC7693  -------------------------------------------------------------------
 AC7693  Click here for local accuracies and other accuracy information.
 AC7693
 AC7693.The horizontal coordinates were established by GPS observations
 AC7693.and adjusted by the National Geodetic Survey in June 2012.
 AC7693
 AC7693.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7693.been affixed to the stable North American tectonic plate. See 
 AC7693.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7693
 AC7693.The horizontal coordinates are valid at the epoch date displayed above
 AC7693.which is a decimal equivalence of Year/Month/Day.
 AC7693
 AC7693.The orthometric height was determined by differential leveling and
 AC7693.adjusted by the NATIONAL GEODETIC SURVEY
 AC7693.in February 1998.
 AC7693
 AC7693.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7693.GEOID18 height accuracy estimate available here.
 AC7693
 AC7693.Click photographs - Photos may exist for this station.
 AC7693
 AC7693.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7693
 AC7693.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7693
 AC7693.The ellipsoidal height was determined by GPS observations
 AC7693.and is referenced to NAD 83.
 AC7693
 AC7693.The dynamic height is computed by dividing the NAVD 88
 AC7693.geopotential number by the normal gravity value computed on the
 AC7693.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7693.degrees latitude (g = 980.6199 gals.).
 AC7693
 AC7693.The modeled gravity was interpolated from observed gravity values.
 AC7693
 AC7693. The following values were computed from the NAD 83(2011) position.
 AC7693
 AC7693;                    North         East     Units Scale Factor Converg.
 AC7693;SPC MD       -   179,647.243   444,385.784   MT  0.99997516   +0 19 22.4
 AC7693;SPC MD       -   589,392.66  1,457,955.69   sFT  0.99997516   +0 19 22.4
 AC7693;UTM  18      - 4,349,332.939   371,877.170   MT  0.99980212   -0 56 26.6
 AC7693
 AC7693!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7693!SPC MD       -   1.00000420  x   0.99997516  =   0.99997936
 AC7693!UTM  18      -   1.00000420  x   0.99980212  =   0.99980632
 AC7693
 AC7693_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7187749332(NAD 83)
 AC7693
 AC7693                          SUPERSEDED SURVEY CONTROL
 AC7693
 AC7693  NAD 83(2007)-  39 17 02.01141(N)    076 29 07.94729(W) AD(2002.00) 0
 AC7693  ELLIP H (02/10/07)  -26.728  (m)                       GP(2002.00)    
 AC7693  ELLIP H (08/30/02)  -26.708  (m)                       GP(       ) 4 2
 AC7693  NAD 83(1991)-  39 17 02.01104(N)    076 29 07.94683(W) AD(       ) 1
 AC7693  ELLIP H (04/08/97)  -26.785  (m)                       GP(       ) 3 1
 AC7693  NAVD 88 (04/08/97)    6.2    (m)  GEOID93  model used  GPS OBS        
 AC7693
 AC7693.Superseded values are not recommended for survey control.
 AC7693
 AC7693.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7693.See file dsdata.pdf to determine how the superseded data were derived.
 AC7693
 AC7693_MARKER: DD = SURVEY DISK
 AC7693_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7693_STAMPING: NO. GIS-10 1995
 AC7693_MARK LOGO: MD-005
 AC7693_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7693_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7693+STABILITY: SURFACE MOTION
 AC7693_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7693+SATELLITE: SATELLITE OBSERVATIONS - December 16, 2015
 AC7693
 AC7693  HISTORY     - Date     Condition        Report By
 AC7693  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7693  HISTORY     - 19980723 GOOD             DMW
 AC7693  HISTORY     - 20060609 GOOD             GPSSS
 AC7693  HISTORY     - 20060707 GOOD             GPSSS
 AC7693  HISTORY     - 20080111 GOOD             GPSSS
 AC7693  HISTORY     - 20151216 GOOD             DEWDAV
 AC7693
 AC7693                          STATION DESCRIPTION
 AC7693
 AC7693'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7693'STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) EAST OF BALTIMORE AND ABOUT
 AC7693'2.0 MI (3.2 KM) NORTHEAST OF DUNDALK. TO REACH STATION FROM I-695
 AC7693'(BELTWAY) TAKE EXIT 41 TO COVE ROAD AND NORTH POINT BLVD (ROUTE 151).
 AC7693'TURN RIGHT AND GO NORTH ON NORTH POINT BLVD FOR 0.60 MI (0.97 KM) TO
 AC7693'TRAPPE ROAD. TURN RIGHT ON TRAPPE ROAD AND GO 0.15 MI (0.24 KM) TO THE
 AC7693'INTERSECTION WITH AN UNNAMED ROAD TO THE LEFT. TURN LEFT AND GO 0.20
 AC7693'MI (0.32 KM) ALONG THE UNNAMED ROAD TO A T INTERSECTION WITH NORRIS
 AC7693'ROAD AND THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A
 AC7693'10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AC7693'70.90 FT (21.61 M) SOUTHEAST OF A SANITARY SEWER MANHOLE, 60.28 FT
 AC7693'(18.37 M) SOUTHEAST OF THE CENTERLINE OF NORRIS ROAD, 54.0 FT (16.5 M)
 AC7693'SOUTH OF TELEPHONE POLE NO. 16, 39.35 FT (11.99 M) NORTHEAST OF THE
 AC7693'UNNAMED ROAD, 53.47 FT (16.30 M) NORTH OF AN UNNUMBERED UTILITY POLE
 AC7693'AND 49.15 FT (14.98 M) WEST OF THE CORNER OF A CHAIN LINK FENCE.
 AC7693
 AC7693                          STATION RECOVERY (1998)
 AC7693
 AC7693'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 AC7693'RECOVERED IN GOOD CONDITION.
 AC7693
 AC7693                          STATION RECOVERY (2006)
 AC7693
 AC7693'RECOVERY NOTE BY GPS SALES AND SERVICES 2006
 AC7693'FOUND BY TOM AND TED OF SURVEY SERVICES OF MD, LLC
 AC7693
 AC7693                          STATION RECOVERY (2006)
 AC7693
 AC7693'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (CE)
 AC7693'RECOVERED BY CHRIS OF PARADYGM.
 AC7693
 AC7693                          STATION RECOVERY (2008)
 AC7693
 AC7693'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (TT)
 AC7693'RECOVERED BY TED AND DEVIN OF SURVEY SERVICES OF MD, LLC.
 AC7693
 AC7693                          STATION RECOVERY (2015)
 AC7693
 AC7693'RECOVERY NOTE BY DEWBERRY DAVIS 2015 (GDS)
 AC7693'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6401 ***********************************************************************
 DG6401  DESIGNATION -  GIS 10
 DG6401  PID         -  DG6401
 DG6401  STATE/COUNTY-  MD/TALBOT
 DG6401  COUNTRY     -  US
 DG6401  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6401
 DG6401                         *CURRENT SURVEY CONTROL
 DG6401  ______________________________________________________________________
 DG6401* NAD 83(1986) POSITION- 38 46 55.41   (N) 076 13 39.08   (W)   HD_HELD1
 DG6401* NAVD 88 ORTHO HEIGHT -     2.119 (meters)        6.95  (feet) ADJUSTED
 DG6401  ______________________________________________________________________
 DG6401  GEOID HEIGHT    -        -34.329 (meters)                     GEOID18
 DG6401  DYNAMIC HEIGHT  -          2.117 (meters)        6.95  (feet) COMP
 DG6401  MODELED GRAVITY -    980,045.5   (mgal)                       NAVD 88
 DG6401
 DG6401  VERT ORDER      -  SECOND    CLASS I
 DG6401
 DG6401.The horizontal coordinates were determined by differentially corrected
 DG6401.hand held GPS observations or other comparable positioning techniques
 DG6401.and have an estimated accuracy of +/- 3 meters.
 DG6401
 DG6401.The orthometric height was determined by differential leveling and
 DG6401.adjusted by the NATIONAL GEODETIC SURVEY
 DG6401.in September 2004.
 DG6401
 DG6401.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6401.GEOID18 height accuracy estimate available here.
 DG6401
 DG6401.Click photographs - Photos may exist for this station.
 DG6401
 DG6401.The dynamic height is computed by dividing the NAVD 88
 DG6401.geopotential number by the normal gravity value computed on the
 DG6401.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6401.degrees latitude (g = 980.6199 gals.).
 DG6401
 DG6401.The modeled gravity was interpolated from observed gravity values.
 DG6401
 DG6401;                    North         East    Units  Estimated Accuracy
 DG6401;SPC MD       -   124,096.9     467,117.7     MT  (+/- 3 meters HH1 GPS) 
 DG6401
 DG6401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9337993307(NAD 83)
 DG6401
 DG6401                          SUPERSEDED SURVEY CONTROL
 DG6401
 DG6401.No superseded survey control is available for this station.
 DG6401
 DG6401_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6401_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6401_STAMPING: NO GIS 10 1995
 DG6401_MARK LOGO: MD1370
 DG6401_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6401_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6401+STABILITY: SURFACE MOTION
 DG6401_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6401+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6401
 DG6401  HISTORY     - Date     Condition        Report By
 DG6401  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6401  HISTORY     - 19991213 GOOD             MDSHA
 DG6401  HISTORY     - 20060328 GOOD             USPSQD
 DG6401
 DG6401                          STATION DESCRIPTION
 DG6401
 DG6401'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6401'THE MARK IS LOCATED IN THE TOWN OF ST. MICHAELS.  TO REACH THE MARK
 DG6401'FROM THE POST OFFICE IN ST. MICHAELS, PROCEED WEST ALONG GRACE STREET
 DG6401'FOR 0.25 MILES (0.40 KM) TO THE GRACE STREET SUB STATION ON THE RIGHT
 DG6401'AND THE MARK ON THE LEFT.  IT IS 13.5 FEET (4.1 M) SOUTH OF THE CENTER
 DG6401'OF THE ROAD, 24.0 FEET (7.3 M) WEST OF POWER POLE NUMBER 29054-08489,
 DG6401'78.1 FEET (23.8 M) EAST OF POWER POLE NUMBER 29042-08484 AND 60.5 FEET
 DG6401'(18.4 M) SOUTHEAST OF THE SOUTHWEST CORNER OF THE CHAIN LINK FENCE
 DG6401'AROUND THE SUB STATION.  IT IS A TOSM DISK SET IN THE TOP OF A 7-INCH
 DG6401'(18 CM) ROUND CONCRETE POST FLUSH WITH THE GROUND AND LEVEL WITH THE
 DG6401'SURFACE OF THE ROAD.
 DG6401
 DG6401                          STATION RECOVERY (2006)
 DG6401
 DG6401'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6401'44 FT WSW OF POWER POLE NO 29054-08489, INSTEAD OF 24 FT WEST
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5603 ***********************************************************************
 AE5603  DESIGNATION -  GIS 100
 AE5603  PID         -  AE5603
 AE5603  STATE/COUNTY-  MD/BALTIMORE
 AE5603  COUNTRY     -  US
 AE5603  USGS QUAD   -  BALTIMORE WEST (2016)
 AE5603
 AE5603                         *CURRENT SURVEY CONTROL
 AE5603  ______________________________________________________________________
 AE5603* NAD 83(2011) POSITION- 39 15 27.17630(N) 076 43 52.04618(W)   ADJUSTED
 AE5603* NAD 83(2011) ELLIP HT-    87.472 (meters)        (08/29/25)   ADJUSTED
 AE5603* NAD 83(2011) EPOCH   -  2010.00
 AE5603* NAVD 88 ORTHO HEIGHT -   119.869 (meters)      393.27  (feet) ADJUSTED
 AE5603  ______________________________________________________________________
 AE5603  GEOID HEIGHT    -        -32.395 (meters)                     GEOID18
 AE5603  NAD 83(2011) X  -  1,135,062.263 (meters)                     COMP
 AE5603  NAD 83(2011) Y  - -4,813,328.706 (meters)                     COMP
 AE5603  NAD 83(2011) Z  -  4,014,552.448 (meters)                     COMP
 AE5603  LAPLACE CORR    -         -6.23  (seconds)                    DEFLEC18
 AE5603  DYNAMIC HEIGHT  -        119.805 (meters)      393.06  (feet) COMP
 AE5603  MODELED GRAVITY -    980,095.9   (mgal)                       NAVD 88
 AE5603
 AE5603  VERT ORDER      -  SECOND    CLASS I
 AE5603
 AE5603  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE5603  Standards:
 AE5603         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE5603            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE5603  -------------------------------------------------------------------
 AE5603  NETWORK    0.64   1.35           0.29   0.23   0.69     -0.00172948
 AE5603  -------------------------------------------------------------------
 AE5603  Click here for local accuracies and other accuracy information.
 AE5603
 AE5603.The horizontal coordinates were established by GPS observations
 AE5603.and adjusted by the MD DOT HIGHWAY ADMIN in August 2025.
 AE5603
 AE5603.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 AE5603.frame has been affixed to the stable North American tectonic plate 
 AE5603
 AE5603.The horizontal coordinates are valid at the epoch date displayed above
 AE5603.which is a decimal equivalence of Year/Month/Day.
 AE5603
 AE5603.The orthometric height was determined by differential leveling and
 AE5603.adjusted by the NATIONAL GEODETIC SURVEY
 AE5603.in February 1998.
 AE5603
 AE5603.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5603.GEOID18 height accuracy estimate available here.
 AE5603
 AE5603.Click photographs - Photos may exist for this station.
 AE5603
 AE5603.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE5603
 AE5603.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE5603
 AE5603.The ellipsoidal height was determined by GPS observations
 AE5603.and is referenced to NAD 83.
 AE5603
 AE5603.The dynamic height is computed by dividing the NAVD 88
 AE5603.geopotential number by the normal gravity value computed on the
 AE5603.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5603.degrees latitude (g = 980.6199 gals.).
 AE5603
 AE5603.The modeled gravity was interpolated from observed gravity values.
 AE5603
 AE5603. The following values were computed from the NAD 83(2011) position.
 AE5603
 AE5603;                    North         East     Units Scale Factor Converg.
 AE5603;SPC MD       -   176,631.808   423,206.408   MT  0.99997199   +0 10 07.5
 AE5603;SPC MD       -   579,499.52  1,388,469.69   sFT  0.99997199   +0 10 07.5
 AE5603;UTM  18      - 4,346,785.796   350,639.318   MT  0.99987468   -1 05 44.4
 AE5603
 AE5603!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE5603!SPC MD       -   0.99998628  x   0.99997199  =   0.99995827
 AE5603!UTM  18      -   0.99998628  x   0.99987468  =   0.99986096
 AE5603
 AE5603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5063946785(NAD 83)
 AE5603
 AE5603                          SUPERSEDED SURVEY CONTROL
 AE5603
 AE5603.No superseded survey control is available for this station.
 AE5603
 AE5603_MARKER: DD = SURVEY DISK
 AE5603_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE5603_STAMPING: NO. GIS-100 1995
 AE5603_MARK LOGO: MD-005
 AE5603_PROJECTION: FLUSH
 AE5603_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE5603_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE5603+STABILITY: SURFACE MOTION
 AE5603_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE5603+SATELLITE: SATELLITE OBSERVATIONS - November 21, 2024
 AE5603
 AE5603  HISTORY     - Date     Condition        Report By
 AE5603  HISTORY     - 1996     MONUMENTED       MCCRON
 AE5603  HISTORY     - 19991001 GOOD             GEOMET
 AE5603  HISTORY     - 20010605 GOOD             MDSHA
 AE5603  HISTORY     - 20020605 GOOD             DMW
 AE5603  HISTORY     - 20030315 GOOD             USPSQD
 AE5603  HISTORY     - 20030921 GOOD             USPSQD
 AE5603  HISTORY     - 20080405 GOOD             NGS
 AE5603  HISTORY     - 20241121 GOOD             MDSHA
 AE5603
 AE5603                          STATION DESCRIPTION
 AE5603
 AE5603'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5603'STATION IS LOCATED ABOUT 7 MI (11.3 KM) SOUTHWEST OF THE CENTER OF
 AE5603'BALTIMORE AND ABOUT 1.0 MI (1.6 KM) SOUTHEAST OF CATONSVILLE.  TO
 AE5603'REACH THE STATION FROM THE I-95 OVERPASS OVER I-195 GO WEST ON I-195
 AE5603'FOR 0.45 MI (0.72 KM) TO THE INTERSECTION WITH ROUTE 166 (ROLLING
 AE5603'ROAD).  TURN RIGHT AND GO NORTH ON ROUTE 166 FOR 0.95 MI (1.53 KM) TO
 AE5603'THE INTERSECTION WITH COLUMBIA COURT ON THE LEFT AND THE ENTRANCE TO
 AE5603'THE CATONSVILLE HIGH SCHOOL AND THE STATION ON THE RIGHT.  STATION
 AE5603'MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET
 AE5603'FLUSH WITH THE GROUND.  IT IS 33.0 FT (10.1 M) SOUTHEAST OF THE
 AE5603'CENTERLINE OF THE ENTRANCE ROAD TO THE HIGH SCHOOL, 5.1 FT (1.6 M)
 AE5603'NORTHEAST OF THE NORTH END OF THE BRICK HIGH SCHOOL SIGN, AND 49.0 FT
 AE5603'(14.9 M) NORTHEAST OF THE CENTERLINE OF ROUTE 166.
 AE5603
 AE5603                          STATION RECOVERY (1999)
 AE5603
 AE5603'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BL)
 AE5603'GOOD.
 AE5603
 AE5603                          STATION RECOVERY (2001)
 AE5603
 AE5603'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AE5603'RECOVERED AS DESCRIBED.
 AE5603
 AE5603                          STATION RECOVERY (2002)
 AE5603
 AE5603'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (DMM)
 AE5603'RECOVERED IN GOOD CONDITION.
 AE5603
 AE5603                          STATION RECOVERY (2003)
 AE5603
 AE5603'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 AE5603'FOUND IN GOOD CONDITION WITH WITNESS POST LESS THAN 3 FEET AWAY.
 AE5603
 AE5603                          STATION RECOVERY (2003)
 AE5603
 AE5603'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 AE5603'RECOVERED IN GOOD CONDITION.  NOTE--THE ORANGE FIBERGLASS WITNESS POST
 AE5603'IS SHREADED AND LYING ON THE GROUND NEXT TO THE BRICK SIGN.
 AE5603
 AE5603                          STATION RECOVERY (2008)
 AE5603
 AE5603'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2008 (DRD)
 AE5603'RECOVERED IN GOOD CONDITION.
 AE5603
 AE5603                          STATION RECOVERY (2024)
 AE5603
 AE5603'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 AE5603'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5605 ***********************************************************************
 AE5605  DESIGNATION -  GIS 102
 AE5605  PID         -  AE5605
 AE5605  STATE/COUNTY-  MD/BALTIMORE
 AE5605  COUNTRY     -  US
 AE5605  USGS QUAD   -  REISTERSTOWN (2016)
 AE5605
 AE5605                         *CURRENT SURVEY CONTROL
 AE5605  ______________________________________________________________________
 AE5605* NAD 83(1986) POSITION- 39 25 36.01   (N) 076 50 36.09   (W)   HD_HELD1
 AE5605* NAVD 88 ORTHO HEIGHT -   204.455 (meters)      670.78  (feet) ADJUSTED
 AE5605  ______________________________________________________________________
 AE5605  GEOID HEIGHT    -        -32.070 (meters)                     GEOID18
 AE5605  DYNAMIC HEIGHT  -        204.347 (meters)      670.43  (feet) COMP
 AE5605  MODELED GRAVITY -    980,096.5   (mgal)                       NAVD 88
 AE5605
 AE5605  VERT ORDER      -  SECOND    CLASS II
 AE5605
 AE5605.The horizontal coordinates were determined by differentially corrected
 AE5605.hand held GPS observations or other comparable positioning techniques
 AE5605.and have an estimated accuracy of +/- 3 meters.
 AE5605
 AE5605.The orthometric height was determined by differential leveling and
 AE5605.adjusted by the NATIONAL GEODETIC SURVEY
 AE5605.in February 1998.
 AE5605
 AE5605.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5605.GEOID18 height accuracy estimate available here.
 AE5605
 AE5605.Click photographs - Photos may exist for this station.
 AE5605
 AE5605.The dynamic height is computed by dividing the NAVD 88
 AE5605.geopotential number by the normal gravity value computed on the
 AE5605.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5605.degrees latitude (g = 980.6199 gals.).
 AE5605
 AE5605.The modeled gravity was interpolated from observed gravity values.
 AE5605
 AE5605;                    North         East    Units  Estimated Accuracy
 AE5605;SPC MD       -   195,385.0     413,487.4     MT  (+/- 3 meters HH1 GPS) 
 AE5605
 AE5605_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4133865747(NAD 83)
 AE5605
 AE5605                          SUPERSEDED SURVEY CONTROL
 AE5605
 AE5605.No superseded survey control is available for this station.
 AE5605
 AE5605_MARKER: DD = SURVEY DISK
 AE5605_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE5605_STAMPING: NO. GIS-102
 AE5605_MARK LOGO: MD-005
 AE5605_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE5605_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE5605+STABILITY: SURFACE MOTION
 AE5605_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE5605+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AE5605
 AE5605  HISTORY     - Date     Condition        Report By
 AE5605  HISTORY     - 1996     MONUMENTED       MCCRON
 AE5605
 AE5605                          STATION DESCRIPTION
 AE5605
 AE5605'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5605'STATION IS LOCATED ABOUT 15 MI (24.1 KM) NORTHWEST OF THE CENTER OF
 AE5605'BALTIMORE AND ABOUT 3 MI (4.8 KM) SOUTHWEST OF REISTERSTOWN.  TO REACH
 AE5605'THE STATION FROM THE INTERSECTION OF ROUTE 30 (HANOVER ROAD) AND ROUTE
 AE5605'140 (REISTERSTOWN ROAD) AT REISTERSTOWN GO SOUTH ON ROUTE 140 FOR 1.1
 AE5605'MI (1.8 KM) TO THE INTERSECTION WITH BERRYMANS LANE. TURN RIGHT ON
 AE5605'BERRYMANS LANE AND GO SOUTHWEST FOR 2.6 MI (4.2 KM) TO THE
 AE5605'INTERSECTION WITH DEER PARK ROAD AND THE STATION ON THE LEFT. STATION
 AE5605'MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET
 AE5605'FLUSH WITH THE GROUND.  IT IS 69.5 FT (21.2 M) EAST OF POWER POLE NO.
 AE5605'137329, 86.8 FT (26.5 M) SOUTH OF POWER POLE NO. 275867, 19.5
 AE5605'SOUTHEAST OF THE CENTERLINE OF BERRYMANS LANE, AND 68.5 FT (20.9 M)
 AE5605'NORTHEAST OF THE CENTERLINE OF DEER PARK ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5602 ***********************************************************************
 AE5602  DESIGNATION -  GIS 104
 AE5602  PID         -  AE5602
 AE5602  STATE/COUNTY-  MD/BALTIMORE
 AE5602  COUNTRY     -  US
 AE5602  USGS QUAD   -  ELLICOTT CITY (2016)
 AE5602
 AE5602                         *CURRENT SURVEY CONTROL
 AE5602  ______________________________________________________________________
 AE5602* NAD 83(1986) POSITION- 39 16 05.34   (N) 076 45 06.70   (W)   HD_HELD1
 AE5602* NAVD 88 ORTHO HEIGHT -   129.462 (meters)      424.74  (feet) ADJUSTED
 AE5602  ______________________________________________________________________
 AE5602  GEOID HEIGHT    -        -32.319 (meters)                     GEOID18
 AE5602  DYNAMIC HEIGHT  -        129.394 (meters)      424.52  (feet) COMP
 AE5602  MODELED GRAVITY -    980,101.2   (mgal)                       NAVD 88
 AE5602
 AE5602  VERT ORDER      -  SECOND    CLASS I
 AE5602
 AE5602.The horizontal coordinates were determined by differentially corrected
 AE5602.hand held GPS observations or other comparable positioning techniques
 AE5602.and have an estimated accuracy of +/- 3 meters.
 AE5602
 AE5602.The orthometric height was determined by differential leveling and
 AE5602.adjusted by the NATIONAL GEODETIC SURVEY
 AE5602.in February 1998.
 AE5602
 AE5602.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5602.GEOID18 height accuracy estimate available here.
 AE5602
 AE5602.Click photographs - Photos may exist for this station.
 AE5602
 AE5602.The dynamic height is computed by dividing the NAVD 88
 AE5602.geopotential number by the normal gravity value computed on the
 AE5602.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5602.degrees latitude (g = 980.6199 gals.).
 AE5602
 AE5602.The modeled gravity was interpolated from observed gravity values.
 AE5602
 AE5602;                    North         East    Units  Estimated Accuracy
 AE5602;SPC MD       -   177,803.6     421,413.4     MT  (+/- 3 meters HH1 GPS) 
 AE5602
 AE5602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4887247996(NAD 83)
 AE5602
 AE5602                          SUPERSEDED SURVEY CONTROL
 AE5602
 AE5602.No superseded survey control is available for this station.
 AE5602
 AE5602_MARKER: DD = SURVEY DISK
 AE5602_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE5602_STAMPING: NO. GIS-104
 AE5602_MARK LOGO: MCCRON
 AE5602_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE5602_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE5602+STABILITY: SURFACE MOTION
 AE5602_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AE5602+SATELLITE: SATELLITE OBSERVATIONS - September 22, 2003
 AE5602
 AE5602  HISTORY     - Date     Condition        Report By
 AE5602  HISTORY     - 1996     MONUMENTED       MCCRON
 AE5602  HISTORY     - 20010605 GOOD             MDSHA
 AE5602  HISTORY     - 20030922 GOOD             USPSQD
 AE5602  HISTORY     - 20031206 MARK NOT FOUND   USPSQD
 AE5602  HISTORY     - 20061001 GOOD             GEOCAC
 AE5602
 AE5602                          STATION DESCRIPTION
 AE5602
 AE5602'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5602'STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) SOUTHWEST OF THE CENTER OF
 AE5602'BALTIMORE AND ABOUT 2.75 MI (4.43 KM) EAST OF ELLICOTT CITY NEAR
 AE5602'CATONSVILLE.  TO REACH THE STATION FROM THE ROUTE 144 (FREDERICK ROAD)
 AE5602'OVERPASS OVER I-695 (BELTWAY) GO WEST ON ROUTE 144 FOR 1.5 MI (2.4 KM)
 AE5602'TO THE STATION ON THE LEFT.  STATION MARK IS IN THE TOP OF A 10 INCH
 AE5602'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 237 FT
 AE5602'(72.2 M) EAST OF THE CENTERLINE OF MAPEL AVE, 18.80 FT (5.73 M)
 AE5602'SOUTHEAST OF A MANHOLE, 28.0 FT (8.5 M) SOUTH OF THE CENTERLINE OF
 AE5602'ROUTE 144, 31.4 FT (9.6 M) WEST OF POWER POLE NO. 268622, AND 13.0 FT
 AE5602'(4.0 M) NORTHWEST OF A MANHOLE.
 AE5602
 AE5602                          STATION RECOVERY (2001)
 AE5602
 AE5602'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AE5602'RECOVERED AS DESCRIBED.
 AE5602
 AE5602                          STATION RECOVERY (2003)
 AE5602
 AE5602'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 AE5602'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 22.0 FEET EAST OF
 AE5602'THE CENTERLINE OF THE DRIVEWAY TO THE RESIDENCE AT --1711 FREDERICK
 AE5602'ROAD, 19.0 FEET SOUTHEAST OF A MANHOLE COVER IN THE PARKING LANE OF
 AE5602'FREDERICK ROAD, AND 7.0 FEET NORTH OF THE NORTH EDGE OF THE CONCRETE
 AE5602'SIDEWALK IN FRONT OF THE RESIDENCE.
 AE5602
 AE5602                          STATION RECOVERY (2003)
 AE5602
 AE5602'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 AE5602'MARK NOT FOUND.
 AE5602
 AE5602                          STATION RECOVERY (2006)
 AE5602
 AE5602'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 AE5602'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5599 ***********************************************************************
 AE5599  DESIGNATION -  GIS 105
 AE5599  PID         -  AE5599
 AE5599  STATE/COUNTY-  MD/BALTIMORE
 AE5599  COUNTRY     -  US
 AE5599  USGS QUAD   -  REISTERSTOWN (2016)
 AE5599
 AE5599                         *CURRENT SURVEY CONTROL
 AE5599  ______________________________________________________________________
 AE5599* NAD 83(1986) POSITION- 39 27 54.00   (N) 076 50 36.09   (W)   HD_HELD1
 AE5599* NAVD 88 ORTHO HEIGHT -   204.982 (meters)      672.51  (feet) ADJUSTED
 AE5599  ______________________________________________________________________
 AE5599  GEOID HEIGHT    -        -32.067 (meters)                     GEOID18
 AE5599  DYNAMIC HEIGHT  -        204.876 (meters)      672.16  (feet) COMP
 AE5599  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 AE5599
 AE5599  VERT ORDER      -  SECOND    CLASS II
 AE5599
 AE5599.The horizontal coordinates were determined by differentially corrected
 AE5599.hand held GPS observations or other comparable positioning techniques
 AE5599.and have an estimated accuracy of +/- 3 meters.
 AE5599
 AE5599.The orthometric height was determined by differential leveling and
 AE5599.adjusted by the NATIONAL GEODETIC SURVEY
 AE5599.in February 1998.
 AE5599
 AE5599.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5599.GEOID18 height accuracy estimate available here.
 AE5599
 AE5599.Click photographs - Photos may exist for this station.
 AE5599
 AE5599.The dynamic height is computed by dividing the NAVD 88
 AE5599.geopotential number by the normal gravity value computed on the
 AE5599.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5599.degrees latitude (g = 980.6199 gals.).
 AE5599
 AE5599.The modeled gravity was interpolated from observed gravity values.
 AE5599
 AE5599;                    North         East    Units  Estimated Accuracy
 AE5599;SPC MD       -   199,640.6     413,480.1     MT  (+/- 3 meters HH1 GPS) 
 AE5599
 AE5599_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4142570001(NAD 83)
 AE5599
 AE5599                          SUPERSEDED SURVEY CONTROL
 AE5599
 AE5599.No superseded survey control is available for this station.
 AE5599
 AE5599_MARKER: DD = SURVEY DISK
 AE5599_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE5599_STAMPING: NO. GIS-105
 AE5599_MARK LOGO: MD-005
 AE5599_PROJECTION: FLUSH
 AE5599_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE5599_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE5599+STABILITY: SURFACE MOTION
 AE5599_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE5599+SATELLITE: SATELLITE OBSERVATIONS - May 31, 2014
 AE5599
 AE5599  HISTORY     - Date     Condition        Report By
 AE5599  HISTORY     - 1996     MONUMENTED       MCCRON
 AE5599  HISTORY     - 20080905 GOOD             GPSSS
 AE5599  HISTORY     - 20140531 GOOD             RODCON
 AE5599
 AE5599                          STATION DESCRIPTION
 AE5599
 AE5599'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5599'STATION IS LOCATED ABOUT 16.5 MI (26.6 KM) NORTHWEST OF BALTIMORE AND
 AE5599'ABOUT 0.5 MI (0.8 KM) WEST OF REISTERSTOWN.  TO REACH THE STATION FROM
 AE5599'THE INTERSECTION OF ROUTE 30 (HANOVER ROAD) AND ROUTE 140
 AE5599'(REISTERSTOWN ROAD) AT REISTERSTOWN GO SOUTH ON ROUTE 140 FOR 0.35 MI
 AE5599'(0.56 KM) TO THE INTERSECTION WITH COCKEYS MILL ROAD.  TURN RIGHT AND
 AE5599'GO WEST ON COCKEYS MILL ROAD FOR 0.7 MI (1.1 KM) TO THE STATION ON THE
 AE5599'LEFT NEAR A POWER TRANSMISSION LINE CROSSING.  STATION MARK IS SET IN
 AE5599'THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE5599'GROUND.  IT IS 16.4 FT (5.0 M) SOUTH OF CENTERLINE OF COCKEYS MILL
 AE5599'ROAD AND 75.3 FT (23.0 M) SOUTHWEST OF POWER POLE NO.  830938 AND 59.5
 AE5599'FT (18.1 M) NORTHEAST OF POWER POLE NO.  207451.
 AE5599
 AE5599                          STATION RECOVERY (2008)
 AE5599
 AE5599'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (SS)
 AE5599'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYING.
 AE5599
 AE5599                          STATION RECOVERY (2014)
 AE5599
 AE5599'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AE5599'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5597 ***********************************************************************
 AE5597  DESIGNATION -  GIS 106
 AE5597  PID         -  AE5597
 AE5597  STATE/COUNTY-  MD/BALTIMORE
 AE5597  COUNTRY     -  US
 AE5597  USGS QUAD   -  TOWSON (2016)
 AE5597
 AE5597                         *CURRENT SURVEY CONTROL
 AE5597  ______________________________________________________________________
 AE5597* NAD 83(1986) POSITION- 39 26 15.     (N) 076 31 47.     (W)   SCALED
 AE5597* NAVD 88 ORTHO HEIGHT -    99.292 (meters)      325.76  (feet) ADJUSTED
 AE5597  ______________________________________________________________________
 AE5597  GEOID HEIGHT    -        -32.676 (meters)                     GEOID18
 AE5597  DYNAMIC HEIGHT  -         99.239 (meters)      325.59  (feet) COMP
 AE5597  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 AE5597
 AE5597  VERT ORDER      -  SECOND    CLASS II
 AE5597
 AE5597.The horizontal coordinates were scaled from a map and have
 AE5597.an estimated accuracy of +/- 6 seconds.
 AE5597
 AE5597.The orthometric height was determined by differential leveling and
 AE5597.adjusted by the NATIONAL GEODETIC SURVEY
 AE5597.in February 1998.
 AE5597
 AE5597.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5597.GEOID18 height accuracy estimate available here.
 AE5597
 AE5597.Click photographs - Photos may exist for this station.
 AE5597
 AE5597.The dynamic height is computed by dividing the NAVD 88
 AE5597.geopotential number by the normal gravity value computed on the
 AE5597.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5597.degrees latitude (g = 980.6199 gals.).
 AE5597
 AE5597.The modeled gravity was interpolated from observed gravity values.
 AE5597
 AE5597;                    North         East    Units  Estimated Accuracy
 AE5597;SPC MD       -   196,680.      440,490.      MT  (+/- 180 meters Scaled)
 AE5597
 AE5597_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ683664(NAD 83)
 AE5597
 AE5597                          SUPERSEDED SURVEY CONTROL
 AE5597
 AE5597.No superseded survey control is available for this station.
 AE5597
 AE5597_MARKER: DD = SURVEY DISK
 AE5597_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE5597_STAMPING: NO. GIS-106
 AE5597_MARK LOGO: MD-005
 AE5597_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE5597_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE5597+STABILITY: SURFACE MOTION
 AE5597_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE5597+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AE5597
 AE5597  HISTORY     - Date     Condition        Report By
 AE5597  HISTORY     - 1996     MONUMENTED       MCCRON
 AE5597  HISTORY     - 20020707 MARK NOT FOUND   USPS
 AE5597
 AE5597                          STATION DESCRIPTION
 AE5597
 AE5597'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5597'STATION IS LOCATED ABOUT 10.5 MI (16.9 KM) NORTHEAST OF THE CENTER OF
 AE5597'BALTIMORE AND ABOUT 5.0 MI (8.0 KM) EAST OF TIMONIUM.  TO REACH THE
 AE5597'STATION FROM THE I-695 (BELTWAY) OVERPASS OVER CROMWELL BRIDGE ROAD GO
 AE5597'NORTH ON CROMWELL BRIDGE ROAD FOR 2.7 MI (4.3 KM) TO A T INTERSECTION
 AE5597'WITH CUB HILL ROAD TO THE RIGHT AND GLEN ARM ROAD TO THE LEFT.  TURN
 AE5597'LEFT ON GLEN ARM ROAD AND GO NORTH FOR 0.7 MI (1.1 KM) TO THE
 AE5597'INTERSECTION WITH MANOR ROAD.  TURN LEFT ON MANOR ROAD AND GO NORTH
 AE5597'FOR 0.3 MI (0.5 KM) TO THE INTERSECTION WITH RUNNING FOX ROAD AND THE
 AE5597'STATION ON THE LEFT.  STATION MARK IS SET IN THE TOP OF A 10 INCH
 AE5597'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 74.7 FT
 AE5597'(22.8 M) NORTHEAST OF POWER POLE NO.  147289, 40.5 FT (12.3 M)
 AE5597'NORTHWEST OF THE CENTERLINE OF MANOR ROAD, 22.0 FT (6.7 M) WEST OF THE
 AE5597'CENTERLINE OF RUNNING FOX ROAD, AND 15.0 FT (4.6 M) SOUTHWEST OF THE
 AE5597'SOUTHEAST CORNER OF A SPLIT RAIL FENCE.
 AE5597
 AE5597                          STATION RECOVERY (2002)
 AE5597
 AE5597'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 AE5597'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2465 ***********************************************************************
 AE2465  DESIGNATION -  GIS 107
 AE2465  PID         -  AE2465
 AE2465  STATE/COUNTY-  MD/BALTIMORE
 AE2465  COUNTRY     -  US
 AE2465  USGS QUAD   -  TOWSON (2016)
 AE2465
 AE2465                         *CURRENT SURVEY CONTROL
 AE2465  ______________________________________________________________________
 AE2465* NAD 83(2011) POSITION- 39 27 23.24066(N) 076 31 42.91288(W)   ADJUSTED
 AE2465* NAD 83(2011) ELLIP HT-   112.583 (meters)        (06/27/12)   ADJUSTED
 AE2465* NAD 83(2011) EPOCH   -  2010.00
 AE2465* NAVD 88 ORTHO HEIGHT -   145.227 (meters)      476.47  (feet) ADJUSTED
 AE2465  ______________________________________________________________________
 AE2465  GEOID HEIGHT    -        -32.638 (meters)                     GEOID18
 AE2465  NAD 83(2011) X  -  1,148,812.054 (meters)                     COMP
 AE2465  NAD 83(2011) Y  - -4,795,686.243 (meters)                     COMP
 AE2465  NAD 83(2011) Z  -  4,031,643.489 (meters)                     COMP
 AE2465  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 AE2465  DYNAMIC HEIGHT  -        145.151 (meters)      476.22  (feet) COMP
 AE2465  MODELED GRAVITY -    980,098.5   (mgal)                       NAVD 88
 AE2465
 AE2465  VERT ORDER      -  SECOND    CLASS II
 AE2465
 AE2465  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2465  Standards:
 AE2465         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2465            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2465  -------------------------------------------------------------------
 AE2465  NETWORK    0.87   1.57           0.39   0.30   0.80      0.29678040
 AE2465  -------------------------------------------------------------------
 AE2465  Click here for local accuracies and other accuracy information.
 AE2465
 AE2465.The horizontal coordinates were established by GPS observations
 AE2465.and adjusted by the National Geodetic Survey in June 2012.
 AE2465
 AE2465.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2465.been affixed to the stable North American tectonic plate. See 
 AE2465.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2465
 AE2465.The horizontal coordinates are valid at the epoch date displayed above
 AE2465.which is a decimal equivalence of Year/Month/Day.
 AE2465
 AE2465.The orthometric height was determined by differential leveling and
 AE2465.adjusted by the NATIONAL GEODETIC SURVEY
 AE2465.in February 1998.
 AE2465
 AE2465.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2465.GEOID18 height accuracy estimate available here.
 AE2465
 AE2465.Click photographs - Photos may exist for this station.
 AE2465
 AE2465.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2465
 AE2465.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2465
 AE2465.The ellipsoidal height was determined by GPS observations
 AE2465.and is referenced to NAD 83.
 AE2465
 AE2465.The dynamic height is computed by dividing the NAVD 88
 AE2465.geopotential number by the normal gravity value computed on the
 AE2465.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2465.degrees latitude (g = 980.6199 gals.).
 AE2465
 AE2465.The modeled gravity was interpolated from observed gravity values.
 AE2465
 AE2465. The following values were computed from the NAD 83(2011) position.
 AE2465
 AE2465;                    North         East     Units Scale Factor Converg.
 AE2465;SPC MD       -   198,785.160   440,573.007   MT  1.00000114   +0 17 45.1
 AE2465;SPC MD       -   652,180.98  1,445,446.61   sFT  1.00000114   +0 17 45.1
 AE2465;UTM  18      - 4,368,546.938   368,488.599   MT  0.99981294   -0 58 17.6
 AE2465
 AE2465!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2465!SPC MD       -   0.99998234  x   1.00000114  =   0.99998348
 AE2465!UTM  18      -   0.99998234  x   0.99981294  =   0.99979528
 AE2465
 AE2465_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6848868546(NAD 83)
 AE2465
 AE2465                          SUPERSEDED SURVEY CONTROL
 AE2465
 AE2465  NAD 83(2007)-  39 27 23.24086(N)    076 31 42.91354(W) AD(2002.00) 0
 AE2465  ELLIP H (02/10/07)  112.602  (m)                       GP(2002.00)    
 AE2465  ELLIP H (08/30/02)  112.601  (m)                       GP(       ) 4 2
 AE2465  NAD 83(1991)-  39 27 23.24085(N)    076 31 42.91353(W) AD(       ) 1
 AE2465  ELLIP H (08/28/97)  112.589  (m)                       GP(       ) 3 2
 AE2465  NAVD 88 (08/28/97)  145.2    (m)  GEOID96  model used  GPS OBS        
 AE2465
 AE2465.Superseded values are not recommended for survey control.
 AE2465
 AE2465.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2465.See file dsdata.pdf to determine how the superseded data were derived.
 AE2465
 AE2465_MARKER: DD = SURVEY DISK
 AE2465_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2465_STAMPING: NO. GIS-107
 AE2465_MARK LOGO: MD-005
 AE2465_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2465_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2465+STABILITY: SURFACE MOTION
 AE2465_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AE2465+SATELLITE: SATELLITE OBSERVATIONS - July 07, 2002
 AE2465
 AE2465  HISTORY     - Date     Condition        Report By
 AE2465  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2465  HISTORY     - 19960201 GOOD             MCCRON
 AE2465  HISTORY     - 20020707 GOOD             USPS
 AE2465
 AE2465                          STATION DESCRIPTION
 AE2465
 AE2465'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2465'STATION IS LOCATED ABOUT 11.5 MI (18.51 KM) NORTHEAST OF THE CENTER OF
 AE2465'BALTIMORE AND ABOUT 6.0 MI (9.66 KM) NORTHEAST OF TIMONIUM. TO REACH
 AE2465'THE STATION FROM THE I-695 OVERPASS OVER CROMWELL BRIDGE ROAD , GO
 AE2465'NORTH ON CROMWELL BRIDGE ROAD FOR 2.7 MI (4.35 KM) TO A T INTERSECTION
 AE2465'WITH CUB HILL ROAD ON THE RIGHT AND GLEN ARM ROAD TO THE LEFT. TURN
 AE2465'LEFT ON GLEN ARM ROAD AND GO NOORTH FOR 0.7 MI (1.13 KM) TO THE
 AE2465'INTERSECTION WITH MANOR ROAD. TURN LEFT AND GO NORTH ON MANOR ROAD FOR
 AE2465'1.7 MI (2.74 KM) TO THE INTERSECTION WITH NORTHCLIFF ROAD AND THE
 AE2465'STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 INCH
 AE2465'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 72.5 FT
 AE2465'(22.10 M) SOUTH OF POWER POLE NO. 108656, 51.4 FT (15.67 M) SOUTHEAST
 AE2465'OF THE CENTERLINE OF MANOR ROAD, 26.0 FT (7.92 M) SOUTHWEST OF THE
 AE2465'CENTERLINE OF NORTHCLIFF ROAD AND 60.0 FT (18.29 M) SOUTHWEST OF
 AE2465'POWERPOLE NO.214337.
 AE2465
 AE2465                          STATION RECOVERY (1996)
 AE2465
 AE2465'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2465'STATION IS LOCATED ABOUT 11.5 MI (18.5 KM) NORTHEAST OF THE CENTER OF
 AE2465'BALTIMORE AND 6.0 MI (9.7 KM) NORTHEAST OF TIMONIUM.  TO REACH THE
 AE2465'STATION FROM THE I-695 (BELTWAY) OVERPASS OVER CROMWELL BRIDGE ROAD GO
 AE2465'NORTH ON CROMWELL BRIDGE ROAD FOR 2.7 MI (4.3 KM) TO A T INTERSECTION
 AE2465'WITH CUB HILL ROAD ON THE RIGHT AND GLEN ARM ROAD TO THE LEFT.  TURN
 AE2465'LEFT ON GLEN ARM ROAD AND GO NORTH FOR 0.7 MI (1.1 KM) TO THE
 AE2465'INTERSECTION WITH MANOR ROAD.  TURN LEFT AND GO NORTH ON MANOR ROAD
 AE2465'FOR 1.7 MI (2.7 KM) TO THE INTERSECTION WITH NORTHCLIFF ROAD AND THE
 AE2465'STATION ON THE RIGHT.  STATION MARK IS SET IN THE TOP OF A 10 INCH
 AE2465'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 72.5 FT
 AE2465'(22.1 M) SOUTH OF POWER POLE NO.  108656, 51.4 FT (15.7 M) SOUTHEAST
 AE2465'OF THE CENTERLINE OF MANOR ROAD, 26.0 FT (7.9 M) SOUTHWEST OF THE
 AE2465'CENTERLINE OF NORTHCLIFF ROAD, AND 60.0 FT (18.3 M) SOUTHWEST OF POWER
 AE2465'POLE NO.  214337.
 AE2465
 AE2465                          STATION RECOVERY (2002)
 AE2465
 AE2465'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 AE2465'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5598 ***********************************************************************
 AE5598  DESIGNATION -  GIS 108
 AE5598  PID         -  AE5598
 AE5598  STATE/COUNTY-  MD/BALTIMORE
 AE5598  COUNTRY     -  US
 AE5598  USGS QUAD   -  TOWSON (2016)
 AE5598
 AE5598                         *CURRENT SURVEY CONTROL
 AE5598  ______________________________________________________________________
 AE5598* NAD 83(2011) POSITION- 39 28 22.96752(N) 076 31 22.50145(W)   ADJUSTED
 AE5598* NAD 83(2011) ELLIP HT-   118.401 (meters)        (06/27/12)   ADJUSTED
 AE5598* NAD 83(2011) EPOCH   -  2010.00
 AE5598* NAVD 88 ORTHO HEIGHT -   151.027 (meters)      495.49  (feet) ADJUSTED
 AE5598  ______________________________________________________________________
 AE5598  GEOID HEIGHT    -        -32.616 (meters)                     GEOID18
 AE5598  NAD 83(2011) X  -  1,149,014.803 (meters)                     COMP
 AE5598  NAD 83(2011) Y  - -4,794,438.352 (meters)                     COMP
 AE5598  NAD 83(2011) Z  -  4,033,069.252 (meters)                     COMP
 AE5598  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 AE5598  DYNAMIC HEIGHT  -        150.948 (meters)      495.24  (feet) COMP
 AE5598  MODELED GRAVITY -    980,099.1   (mgal)                       NAVD 88
 AE5598
 AE5598  VERT ORDER      -  SECOND    CLASS II
 AE5598
 AE5598  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE5598  Standards:
 AE5598         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE5598            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE5598  -------------------------------------------------------------------
 AE5598  NETWORK    1.00   1.49           0.44   0.37   0.76     -0.15667334
 AE5598  -------------------------------------------------------------------
 AE5598  Click here for local accuracies and other accuracy information.
 AE5598
 AE5598.The horizontal coordinates were established by GPS observations
 AE5598.and adjusted by the National Geodetic Survey in June 2012.
 AE5598
 AE5598.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE5598.been affixed to the stable North American tectonic plate. See 
 AE5598.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE5598
 AE5598.The horizontal coordinates are valid at the epoch date displayed above
 AE5598.which is a decimal equivalence of Year/Month/Day.
 AE5598
 AE5598.The orthometric height was determined by differential leveling and
 AE5598.adjusted by the NATIONAL GEODETIC SURVEY
 AE5598.in February 1998.
 AE5598
 AE5598.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5598.GEOID18 height accuracy estimate available here.
 AE5598
 AE5598.Click photographs - Photos may exist for this station.
 AE5598
 AE5598.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE5598
 AE5598.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE5598
 AE5598.The ellipsoidal height was determined by GPS observations
 AE5598.and is referenced to NAD 83.
 AE5598
 AE5598.The dynamic height is computed by dividing the NAVD 88
 AE5598.geopotential number by the normal gravity value computed on the
 AE5598.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5598.degrees latitude (g = 980.6199 gals.).
 AE5598
 AE5598.The modeled gravity was interpolated from observed gravity values.
 AE5598
 AE5598. The following values were computed from the NAD 83(2011) position.
 AE5598
 AE5598;                    North         East     Units Scale Factor Converg.
 AE5598;SPC MD       -   200,629.657   441,051.361   MT  1.00000411   +0 17 58.0
 AE5598;SPC MD       -   658,232.47  1,447,016.01   sFT  1.00000411   +0 17 58.0
 AE5598;UTM  18      - 4,370,380.053   369,007.540   MT  0.99981126   -0 58 05.8
 AE5598
 AE5598!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE5598!SPC MD       -   0.99998142  x   1.00000411  =   0.99998553
 AE5598!UTM  18      -   0.99998142  x   0.99981126  =   0.99979269
 AE5598
 AE5598_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6900770380(NAD 83)
 AE5598
 AE5598                          SUPERSEDED SURVEY CONTROL
 AE5598
 AE5598  NAD 83(2007)-  39 28 22.96772(N)    076 31 22.50210(W) AD(2002.00) 0
 AE5598  ELLIP H (02/10/07)  118.420  (m)                       GP(2002.00)    
 AE5598  ELLIP H (08/30/02)  118.421  (m)                       GP(       ) 4 2
 AE5598  NAD 83(1991)-  39 28 22.96756(N)    076 31 22.50214(W) AD(       ) 1
 AE5598  ELLIP H (03/31/00)  118.387  (m)                       GP(       ) 3 1
 AE5598  NAVD 88             151.03   (m)          495.5    (f) LEVELING    3  
 AE5598
 AE5598.Superseded values are not recommended for survey control.
 AE5598
 AE5598.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE5598.See file dsdata.pdf to determine how the superseded data were derived.
 AE5598
 AE5598_MARKER: DD = SURVEY DISK
 AE5598_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE5598_STAMPING: NO. GIS-108
 AE5598_MARK LOGO: MD-005
 AE5598_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE5598_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE5598+STABILITY: SURFACE MOTION
 AE5598_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE5598+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2005
 AE5598
 AE5598  HISTORY     - Date     Condition        Report By
 AE5598  HISTORY     - 1996     MONUMENTED       MCCRON
 AE5598  HISTORY     - 19970702 GOOD             MD-005
 AE5598  HISTORY     - 20010705 GOOD             DMW
 AE5598  HISTORY     - 20050728 GOOD             DEWDAV
 AE5598
 AE5598                          STATION DESCRIPTION
 AE5598
 AE5598'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5598'STATION IS LOCATED ABOUT 13.0 MI (20.9 KM) NORTHEAST OF THE CENTER OF
 AE5598'BALTIMORE AND ABOUT 6.75 MI (10.86 KM) EAST OF COCKEYSVILLE.  TO REACH
 AE5598'THE STATION FROM THE I-695 (BELTWAY) OVERPASS OVER CROMWELL BRIDGE
 AE5598'ROAD GO NORTH ON CROMWELL BRIDGE ROAD FOR 2.7 MI (4.3 KM) TO A T
 AE5598'INTERSECTION WITH CUB HILL ROAD ON THE RIGHT AND GLEN ARM ROAD ON THE
 AE5598'LEFT.  TURN LEFT ON GLEN ARM ROAD AND GO NORTH FOR 0.7 MI (1.1 KM) TO
 AE5598'THE INTERSECTION WITH MANOR ROAD.  TURN LEFT ON MANOR ROAD AND GO
 AE5598'NORTH FOR 2.95 MI (4.75 KM) TO THE INTERSECTION WITH LONG GREEN ROAD
 AE5598'AND THE STATION ON THE RIGHT.  STATION MARK IS SET IN THE TOP OF A 10
 AE5598'INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 32.8
 AE5598'FT (10.0 M) SOUTHEAST OF THE CENTERLINE OF MANOR ROAD, 4.3 FT (1.3 M)
 AE5598'SOUTHWEST OF POWER POLE NO.  39199, 30.3 FT (9.2 M) NORTHWEST OF POWER
 AE5598'POLE NO.  214337, AND 36.5 FT (11.1 M) NORTHEAST OF THE CENTERLINE OF
 AE5598'LONG GREEN ROAD.
 AE5598
 AE5598                          STATION RECOVERY (1997)
 AE5598
 AE5598'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AE5598'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AE5598'1997.
 AE5598
 AE5598                          STATION RECOVERY (2001)
 AE5598
 AE5598'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (JMS)
 AE5598'RECOVERED IN GOOD CONDITION.
 AE5598
 AE5598                          STATION RECOVERY (2005)
 AE5598
 AE5598'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (CSW)
 AE5598'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7694 ***********************************************************************
 AC7694  DESIGNATION -  GIS 11
 AC7694  PID         -  AC7694
 AC7694  STATE/COUNTY-  MD/BALTIMORE
 AC7694  COUNTRY     -  US
 AC7694  USGS QUAD   -  MIDDLE RIVER (2016)
 AC7694
 AC7694                         *CURRENT SURVEY CONTROL
 AC7694  ______________________________________________________________________
 AC7694* NAD 83(2011) POSITION- 39 20 52.48570(N) 076 28 33.47084(W)   ADJUSTED
 AC7694* NAD 83(2011) ELLIP HT-    10.957 (meters)        (06/27/12)   ADJUSTED
 AC7694* NAD 83(2011) EPOCH   -  2010.00
 AC7694* NAVD 88 ORTHO HEIGHT -    43.873 (meters)      143.94  (feet) ADJUSTED
 AC7694  ______________________________________________________________________
 AC7694  GEOID HEIGHT    -        -32.925 (meters)                     GEOID18
 AC7694  NAD 83(2011) X  -  1,154,986.604 (meters)                     COMP
 AC7694  NAD 83(2011) Y  - -4,801,990.084 (meters)                     COMP
 AC7694  NAD 83(2011) Z  -  4,022,267.132 (meters)                     COMP
 AC7694  LAPLACE CORR    -         -3.30  (seconds)                    DEFLEC18
 AC7694  DYNAMIC HEIGHT  -         43.850 (meters)      143.86  (feet) COMP
 AC7694  MODELED GRAVITY -    980,102.5   (mgal)                       NAVD 88
 AC7694
 AC7694  VERT ORDER      -  THIRD
 AC7694
 AC7694  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7694  Standards:
 AC7694         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7694            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7694  -------------------------------------------------------------------
 AC7694  NETWORK    0.89   2.53           0.33   0.39   1.29      0.08584292
 AC7694  -------------------------------------------------------------------
 AC7694  Click here for local accuracies and other accuracy information.
 AC7694
 AC7694.The horizontal coordinates were established by GPS observations
 AC7694.and adjusted by the National Geodetic Survey in June 2012.
 AC7694
 AC7694.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7694.been affixed to the stable North American tectonic plate. See 
 AC7694.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7694
 AC7694.The horizontal coordinates are valid at the epoch date displayed above
 AC7694.which is a decimal equivalence of Year/Month/Day.
 AC7694
 AC7694.The orthometric height was determined by differential leveling and
 AC7694.adjusted by the NATIONAL GEODETIC SURVEY
 AC7694.in February 1998.
 AC7694
 AC7694.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7694.GEOID18 height accuracy estimate available here.
 AC7694
 AC7694.Click photographs - Photos may exist for this station.
 AC7694
 AC7694.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7694
 AC7694.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7694
 AC7694.The ellipsoidal height was determined by GPS observations
 AC7694.and is referenced to NAD 83.
 AC7694
 AC7694.The dynamic height is computed by dividing the NAVD 88
 AC7694.geopotential number by the normal gravity value computed on the
 AC7694.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7694.degrees latitude (g = 980.6199 gals.).
 AC7694
 AC7694.The modeled gravity was interpolated from observed gravity values.
 AC7694
 AC7694. The following values were computed from the NAD 83(2011) position.
 AC7694
 AC7694;                    North         East     Units Scale Factor Converg.
 AC7694;SPC MD       -   186,759.355   445,171.209   MT  0.99998374   +0 19 44.1
 AC7694;SPC MD       -   612,726.32  1,460,532.54   sFT  0.99998374   +0 19 44.1
 AC7694;UTM  18      - 4,356,424.723   372,819.151   MT  0.99979915   -0 56 09.3
 AC7694
 AC7694!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7694!SPC MD       -   0.99999828  x   0.99998374  =   0.99998202
 AC7694!UTM  18      -   0.99999828  x   0.99979915  =   0.99979743
 AC7694
 AC7694_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7281956424(NAD 83)
 AC7694
 AC7694                          SUPERSEDED SURVEY CONTROL
 AC7694
 AC7694  NAD 83(2007)-  39 20 52.48593(N)    076 28 33.47160(W) AD(2002.00) 0
 AC7694  ELLIP H (02/10/07)   10.974  (m)                       GP(2002.00)    
 AC7694  ELLIP H (08/30/02)   10.985  (m)                       GP(       ) 4 2
 AC7694  NAD 83(1991)-  39 20 52.48625(N)    076 28 33.47123(W) AD(       ) 1
 AC7694  ELLIP H (04/08/97)   11.007  (m)                       GP(       ) 3 1
 AC7694  NAVD 88 (04/08/97)   43.9    (m)  GEOID93  model used  GPS OBS        
 AC7694
 AC7694.Superseded values are not recommended for survey control.
 AC7694
 AC7694.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7694.See file dsdata.pdf to determine how the superseded data were derived.
 AC7694
 AC7694_MARKER: DD = SURVEY DISK
 AC7694_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7694_STAMPING: NO. GIS-11 1995
 AC7694_MARK LOGO: MD-005
 AC7694_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7694_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7694+STABILITY: SURFACE MOTION
 AC7694_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7694+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2015
 AC7694
 AC7694  HISTORY     - Date     Condition        Report By
 AC7694  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7694  HISTORY     - 19971008 GOOD             DMW
 AC7694  HISTORY     - 19980924 GOOD             DMW
 AC7694  HISTORY     - 20030907 GOOD             USPSQD
 AC7694  HISTORY     - 20150615 GOOD             USPSQD
 AC7694
 AC7694                          STATION DESCRIPTION
 AC7694
 AC7694'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7694'STATION IS LOCATED ABOUT 7.0 MI (11.3 KM) NORTHEAST OF THE CENTER OF
 AC7694'BALTIMORE AND ABOUT 2.0 MI (3.2 KM) NORTH OF ESSEX AT ROSSVILLE. TO
 AC7694'REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 34 TO ROUTE 7
 AC7694'(PHILADELPHIA ROAD) NORTH. FROM THE I-695 OVERPASS OVER RT 7 GO NORTH
 AC7694'ON ROUTE 7 FOR 1.1 MI (1.8 KM) TO THE INTERSECTION WITH LENNINGS AVE.
 AC7694'TURN LEFT ON LENNINGS AVE AND GO 0.15 MI (0.24 KM) TO THE INTERSECTION
 AC7694'WITH LENNING LANE AND STATION ON THE RIGHT. STATION MARK IS SET IN THE
 AC7694'TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 AC7694'IT IS 20.38 FT (6.21 M) SOUTHEAST OF THE CENTERLINE OF LENNINGS LANE,
 AC7694'50.82 NORTHEAST OF THE CENTERLINE OF LENNINGS AVE, 21.80 FT (6.64 M)
 AC7694'NORTHEAST OF A FIRE HYDRANT, 14.30 FT (4.36 M) NORTHEAST OF TELEPHONE
 AC7694'PEDESTAL NO.1, 23.20 FT (7.07 M) NORTH OF POWER POLE NO.296180 AND
 AC7694'72.20 FT (22.01 M) SOUTHWEST OF POWER POLE NO.257829.
 AC7694
 AC7694                          STATION RECOVERY (1997)
 AC7694
 AC7694'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AC7694'RECOVERED AS DESCRIBED.
 AC7694
 AC7694                          STATION RECOVERY (1998)
 AC7694
 AC7694'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 AC7694'RECOVERED IN GOOD CONDITION.
 AC7694
 AC7694                          STATION RECOVERY (2003)
 AC7694
 AC7694'RECOVERY NOTE BY US POWER SQUADRON 2003 (JJH)
 AC7694'DESCRIPTION SHOULD READ TO THE INTERSECTION WITH HOSPITAL DR. AND TURN
 AC7694'LEFT ON HOSPITAL DR.. ALSO NORTHEAST OF THE CENTERLINE OF HOSPITAL
 AC7694'DR.. (NOT LENNINGS AVE)
 AC7694
 AC7694                          STATION RECOVERY (2015)
 AC7694
 AC7694'RECOVERY NOTE BY US POWER SQUADRON 2015
 AC7694'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6426 ***********************************************************************
 DG6426  DESIGNATION -  GIS 11
 DG6426  PID         -  DG6426
 DG6426  STATE/COUNTY-  MD/TALBOT
 DG6426  COUNTRY     -  US
 DG6426  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6426
 DG6426                         *CURRENT SURVEY CONTROL
 DG6426  ______________________________________________________________________
 DG6426* NAD 83(1986) POSITION- 38 47 16.86   (N) 076 13 08.18   (W)   HD_HELD1
 DG6426* NAVD 88 ORTHO HEIGHT -     1.304 (meters)        4.28  (feet) ADJUSTED
 DG6426  ______________________________________________________________________
 DG6426  GEOID HEIGHT    -        -34.338 (meters)                     GEOID18
 DG6426  DYNAMIC HEIGHT  -          1.303 (meters)        4.27  (feet) COMP
 DG6426  MODELED GRAVITY -    980,045.6   (mgal)                       NAVD 88
 DG6426
 DG6426  VERT ORDER      -  SECOND    CLASS I
 DG6426
 DG6426.The horizontal coordinates were determined by differentially corrected
 DG6426.hand held GPS observations or other comparable positioning techniques
 DG6426.and have an estimated accuracy of +/- 3 meters.
 DG6426
 DG6426.The orthometric height was determined by differential leveling and
 DG6426.adjusted by the NATIONAL GEODETIC SURVEY
 DG6426.in September 2004.
 DG6426
 DG6426.No vertical observational check was made to the station.
 DG6426
 DG6426.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6426.GEOID18 height accuracy estimate available here.
 DG6426
 DG6426.Click photographs - Photos may exist for this station.
 DG6426
 DG6426.The dynamic height is computed by dividing the NAVD 88
 DG6426.geopotential number by the normal gravity value computed on the
 DG6426.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6426.degrees latitude (g = 980.6199 gals.).
 DG6426
 DG6426.The modeled gravity was interpolated from observed gravity values.
 DG6426
 DG6426;                    North         East    Units  Estimated Accuracy
 DG6426;SPC MD       -   124,764.7     467,857.8     MT  (+/- 3 meters HH1 GPS) 
 DG6426
 DG6426_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9413393958(NAD 83)
 DG6426
 DG6426                          SUPERSEDED SURVEY CONTROL
 DG6426
 DG6426.No superseded survey control is available for this station.
 DG6426
 DG6426_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6426_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6426_STAMPING: NO GIS 11 1995
 DG6426_MARK LOGO: MD1370
 DG6426_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6426_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6426+STABILITY: SURFACE MOTION
 DG6426_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6426+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6426
 DG6426  HISTORY     - Date     Condition        Report By
 DG6426  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6426  HISTORY     - 19991213 GOOD             MDSHA
 DG6426  HISTORY     - 20060328 GOOD             USPSQD
 DG6426  HISTORY     - 20231015 MARK NOT FOUND   USPSQD
 DG6426
 DG6426                          STATION DESCRIPTION
 DG6426
 DG6426'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6426'THE MARK IS LOCATED IN THE TOWN OF ST. MICHAELS, AT THE CHESAPEAKE BAY
 DG6426'MARITIME MUSEUM.  TO REACH THE MARK FROM THE POST OFFICE IN SAINT
 DG6426'MICHAELS, PROCEED NORTH ALONG MARYLAND STATE HIGHWAY 33 FOR 0.2 MILES
 DG6426'(0.3 KM) TO MILL STREET.  TURN RIGHT AND PROCEED EAST ALONG MILL
 DG6426'STREET FOR 0.15 MILES (0.24 KM) TO THE PARKING AREA FOR THE MARITIME
 DG6426'MUSEUM ON THE LEFT.  PROCEED EAST ON FOOT THROUGH THE ADMISSIONS
 DG6426'BUILDING TO THE EASTERLY MOST POINT OF LAND LOCATED TO THE NORTH OF
 DG6426'THE LIGHT HOUSE.  IT IS 53.3 FEET (16.2 M) WEST OF THE FACE OF A
 DG6426'NORTH-SOUTH BULKHEAD, 68.5 FEET (20.9 M) NORTH OF THE FACE OF A
 DG6426'EAST-WEST BULKHEAD, 69.0 FEET (21.0 M) SOUTH OF THE FACE OF A
 DG6426'EAST-WEST BULKHEAD, 95.5 FEET (29.1 M) SOUTHEAST OF A WATER SPIGOT AND
 DG6426'64.1 FEET (19.5 M) SOUTHWEST OF A WATER SPIGOT.  IT IS A TOSM DISK SET
 DG6426'IN THE TOP OF A 7 INCH (18 CM) ROUND CONCRETE MONUMENT FLUSH WITH THE
 DG6426'GROUND.
 DG6426
 DG6426                          STATION RECOVERY (2006)
 DG6426
 DG6426'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6426'RECOVERED IN GOOD CONDITION.
 DG6426
 DG6426                          STATION RECOVERY (2023)
 DG6426
 DG6426'RECOVERY NOTE BY US POWER SQUADRON 2023 (DMM)
 DG6426'LOCATION OF MARKER FOUND BUT MARKER NOT RECOVERED.  DISTANCE MEASURED
 DG6426'OFF BASED ON DESCRIPTION.  AREA HAS BEEN RENOVATED.  WORK HAS BEEN
 DG6426'DONE IN THE AREA AND NOTED MAJOR TIRE MARKS NOTED OVER THE AREA WHERE
 DG6426'MARKER WAS DESCRIBED AS BEING LOCATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4388 ***********************************************************************
 AI4388  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4388  DESIGNATION -  GIS 110
 AI4388  PID         -  AI4388
 AI4388  STATE/COUNTY-  MD/BALTIMORE
 AI4388  COUNTRY     -  US
 AI4388  USGS QUAD   -  REISTERSTOWN (2016)
 AI4388
 AI4388                         *CURRENT SURVEY CONTROL
 AI4388  ______________________________________________________________________
 AI4388* NAD 83(2011) POSITION- 39 29 16.55901(N) 076 51 49.18764(W)   ADJUSTED
 AI4388* NAD 83(2011) ELLIP HT-   110.153 (meters)        (06/27/12)   ADJUSTED
 AI4388* NAD 83(2011) EPOCH   -  2010.00
 AI4388* NAVD 88 ORTHO HEIGHT -   142.22  (meters)      466.6   (feet) GPS OBS
 AI4388  ______________________________________________________________________
 AI4388  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4388  GEOID HEIGHT    -        -32.074 (meters)                     GEOID99
 AI4388  GEOID HEIGHT    -        -32.068 (meters)                     GEOID18
 AI4388  NAD 83(2011) X  -  1,120,241.165 (meters)                     COMP
 AI4388  NAD 83(2011) Y  - -4,800,157.304 (meters)                     COMP
 AI4388  NAD 83(2011) Z  -  4,034,339.708 (meters)                     COMP
 AI4388  LAPLACE CORR    -         -0.57  (seconds)                    DEFLEC18
 AI4388
 AI4388  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4388  Standards:
 AI4388         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4388            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4388  -------------------------------------------------------------------
 AI4388  NETWORK    1.03   1.63           0.45   0.39   0.83     -0.05485520
 AI4388  -------------------------------------------------------------------
 AI4388  Click here for local accuracies and other accuracy information.
 AI4388
 AI4388.The horizontal coordinates were established by GPS observations
 AI4388.and adjusted by the National Geodetic Survey in June 2012.
 AI4388
 AI4388.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4388.been affixed to the stable North American tectonic plate. See 
 AI4388.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4388
 AI4388.The horizontal coordinates are valid at the epoch date displayed above
 AI4388.which is a decimal equivalence of Year/Month/Day.
 AI4388
 AI4388.The orthometric height was determined by GPS observations and a
 AI4388.high-resolution geoid model using precise GPS observation and
 AI4388.processing techniques.
 AI4388
 AI4388.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4388.GEOID18 height accuracy estimate available here.
 AI4388
 AI4388.Click photographs - Photos may exist for this station.
 AI4388
 AI4388.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4388
 AI4388.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4388
 AI4388.The ellipsoidal height was determined by GPS observations
 AI4388.and is referenced to NAD 83.
 AI4388
 AI4388. The following values were computed from the NAD 83(2011) position.
 AI4388
 AI4388;                    North         East     Units Scale Factor Converg.
 AI4388;SPC MD       -   202,183.927   411,728.895   MT  1.00000686   +0 05 08.1
 AI4388;SPC MD       -   663,331.77  1,350,813.88   sFT  1.00000686   +0 05 08.1
 AI4388;UTM  18      - 4,372,583.176   339,730.901   MT  0.99991626   -1 11 07.4
 AI4388
 AI4388!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4388!SPC MD       -   0.99998272  x   1.00000686  =   0.99998958
 AI4388!UTM  18      -   0.99998272  x   0.99991626  =   0.99989898
 AI4388
 AI4388_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3973072583(NAD 83)
 AI4388
 AI4388                          SUPERSEDED SURVEY CONTROL
 AI4388
 AI4388  NAD 83(2007)-  39 29 16.55916(N)    076 51 49.18844(W) AD(2002.00) 0
 AI4388  ELLIP H (02/10/07)  110.174  (m)                       GP(2002.00)    
 AI4388  ELLIP H (08/30/02)  110.183  (m)                       GP(       ) 4 2
 AI4388  NAD 83(1991)-  39 29 16.55912(N)    076 51 49.18870(W) AD(       ) 1
 AI4388  ELLIP H (03/31/00)  110.128  (m)                       GP(       ) 3 1
 AI4388
 AI4388.Superseded values are not recommended for survey control.
 AI4388
 AI4388.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4388.See file dsdata.pdf to determine how the superseded data were derived.
 AI4388
 AI4388_MARKER: DD = SURVEY DISK
 AI4388_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4388_STAMPING: GIS 110
 AI4388_MARK LOGO: MD-005
 AI4388_PROJECTION: FLUSH
 AI4388_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4388_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4388+STABILITY: SURFACE MOTION
 AI4388_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4388+SATELLITE: SATELLITE OBSERVATIONS - 1997
 AI4388
 AI4388  HISTORY     - Date     Condition        Report By
 AI4388  HISTORY     - 1997     MONUMENTED       MD-005
 AI4388  HISTORY     - 20040520 GOOD             GEOCAC
 AI4388  HISTORY     - 20200316 GOOD             WTBALL
 AI4388
 AI4388                          STATION DESCRIPTION
 AI4388
 AI4388'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4388'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4388'LOCATED ABOUT 8.7 MILES (14.0 KM) SOUTH OF HAMPSTEAD AND 11.9 MILES
 AI4388'(19.2 KM) WEST OF COCKEYSVILLE NEAR THE CARROLL-BALTIMORE COUNTY LINE
 AI4388'AT THE PATAPSCO RIVER.  TO REACH THE STATION FROM THE TRAFFIC LIGHT AT
 AI4388'THE INTERSECTION OF THE END OF I795 WITH ROUTE 140 (WESTMINSTER PIKE)
 AI4388', GO NORTHWEST ON ROUTE 140 FOR 1.8 MILES (2.9 KM) TO THE INTERSECTION
 AI4388'WITH GLEN FALLS ROAD AND THE STATION ON THE RIGHT. STATION IS SET IN
 AI4388'THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT FLUSH WITH THE GROUND.
 AI4388'IT IS 39 FEET (11.9 M) NORTHEAST FROM THE CENTERLINE OF ROUTE 140, 20
 AI4388'FEET (6.1 M) SOUTHWEST FROM THE CENTERLINE OF THE EAST FORK OF GLEN
 AI4388'FALLS ROAD, 28.0 FEET (8.5 M) NORTHWEST FROM A TELEPHONE MANHO COVER,
 AI4388'AND 42.80 FEET (13.05 M) SOUTHEAST FROM THE FACE OF AN UNNUMBERED
 AI4388'UTILITY POLE.
 AI4388
 AI4388                          STATION RECOVERY (2004)
 AI4388
 AI4388'RECOVERY NOTE BY GEOCACHING 2004 (DH)
 AI4388'CURRENT NAD83 COORDS. ARE GOOD.
 AI4388
 AI4388                          STATION RECOVERY (2020)
 AI4388
 AI4388'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AI4388'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4389 ***********************************************************************
 AI4389  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4389  DESIGNATION -  GIS 111
 AI4389  PID         -  AI4389
 AI4389  STATE/COUNTY-  MD/BALTIMORE
 AI4389  COUNTRY     -  US
 AI4389  USGS QUAD   -  HAMPSTEAD (2016)
 AI4389
 AI4389                         *CURRENT SURVEY CONTROL
 AI4389  ______________________________________________________________________
 AI4389* NAD 83(2011) POSITION- 39 32 09.55872(N) 076 51 01.09715(W)   ADJUSTED
 AI4389* NAD 83(2011) ELLIP HT-   182.183 (meters)        (06/27/12)   ADJUSTED
 AI4389* NAD 83(2011) EPOCH   -  2010.00
 AI4389* NAVD 88 ORTHO HEIGHT -   214.28  (meters)      703.0   (feet) GPS OBS
 AI4389  ______________________________________________________________________
 AI4389  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4389  GEOID HEIGHT    -        -32.108 (meters)                     GEOID99
 AI4389  GEOID HEIGHT    -        -32.095 (meters)                     GEOID18
 AI4389  NAD 83(2011) X  -  1,120,600.661 (meters)                     COMP
 AI4389  NAD 83(2011) Y  - -4,796,644.464 (meters)                     COMP
 AI4389  NAD 83(2011) Z  -  4,038,501.827 (meters)                     COMP
 AI4389  LAPLACE CORR    -         -0.42  (seconds)                    DEFLEC18
 AI4389
 AI4389  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4389  Standards:
 AI4389         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4389            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4389  -------------------------------------------------------------------
 AI4389  NETWORK    0.66   1.06           0.29   0.25   0.54     -0.03159458
 AI4389  -------------------------------------------------------------------
 AI4389  Click here for local accuracies and other accuracy information.
 AI4389
 AI4389.The horizontal coordinates were established by GPS observations
 AI4389.and adjusted by the National Geodetic Survey in June 2012.
 AI4389
 AI4389.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4389.been affixed to the stable North American tectonic plate. See 
 AI4389.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4389
 AI4389.The horizontal coordinates are valid at the epoch date displayed above
 AI4389.which is a decimal equivalence of Year/Month/Day.
 AI4389
 AI4389.The orthometric height was determined by GPS observations and a
 AI4389.high-resolution geoid model using precise GPS observation and
 AI4389.processing techniques.
 AI4389
 AI4389.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4389.GEOID18 height accuracy estimate available here.
 AI4389
 AI4389.Click photographs - Photos may exist for this station.
 AI4389
 AI4389.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4389
 AI4389.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4389
 AI4389.The ellipsoidal height was determined by GPS observations
 AI4389.and is referenced to NAD 83.
 AI4389
 AI4389. The following values were computed from the NAD 83(2011) position.
 AI4389
 AI4389;                    North         East     Units Scale Factor Converg.
 AI4389;SPC MD       -   207,521.153   412,869.359   MT  1.00001617   +0 05 38.2
 AI4389;SPC MD       -   680,842.32  1,354,555.56   sFT  1.00001617   +0 05 38.2
 AI4389;UTM  18      - 4,377,893.262   340,989.394   MT  0.99991131   -1 10 41.1
 AI4389
 AI4389!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4389!SPC MD       -   0.99997142  x   1.00001617  =   0.99998759
 AI4389!UTM  18      -   0.99997142  x   0.99991131  =   0.99988273
 AI4389
 AI4389_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4098977893(NAD 83)
 AI4389
 AI4389                          SUPERSEDED SURVEY CONTROL
 AI4389
 AI4389  NAD 83(2007)-  39 32 09.55889(N)    076 51 01.09789(W) AD(2002.00) 0
 AI4389  ELLIP H (02/10/07)  182.203  (m)                       GP(2002.00)    
 AI4389  ELLIP H (08/30/02)  182.212  (m)                       GP(       ) 4 2
 AI4389  NAD 83(1991)-  39 32 09.55898(N)    076 51 01.09816(W) AD(       ) 1
 AI4389  ELLIP H (03/31/00)  182.159  (m)                       GP(       ) 3 1
 AI4389
 AI4389.Superseded values are not recommended for survey control.
 AI4389
 AI4389.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4389.See file dsdata.pdf to determine how the superseded data were derived.
 AI4389
 AI4389_MARKER: DD = SURVEY DISK
 AI4389_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4389_STAMPING: GIS 111
 AI4389_MARK LOGO: MD-005
 AI4389_PROJECTION: FLUSH
 AI4389_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4389_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4389+STABILITY: SURFACE MOTION
 AI4389_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AI4389+SATELLITE: SATELLITE OBSERVATIONS - May 25, 2004
 AI4389
 AI4389  HISTORY     - Date     Condition        Report By
 AI4389  HISTORY     - 1997     MONUMENTED       MD-005
 AI4389  HISTORY     - 20040525 GOOD             GEOCAC
 AI4389  HISTORY     - 20200305 GOOD             WTBALL
 AI4389
 AI4389                          STATION DESCRIPTION
 AI4389
 AI4389'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4389'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4389'LOCATED ABOUT 5.7 MILES (9.2 KM) SOUTH OF HAMPSTEAD AND 10.8 MILES
 AI4389'(17.4 KM) SOUTHWEST OF HEREFORD NEAR THE CARROLL-BALTIMORE COUNTY LINE
 AI4389'ON ROUTE 91 (EMORY ROAD) .  TO REACH THE STATION FROM THE INTERSECTION
 AI4389'OF ROUTE 140 (WESTMINSTER PIKE) AND ROUTE 30 (HANOVER PIKE) IN
 AI4389'REISTERSTOWN, GO NORTH ON ROUTE 30 FOR 5.1 MILES (8.2 KM) TO THE
 AI4389'INTERSECTION WITH ROUTE 91 (EMORY ROAD) , TURN LEFT AND GO SOUTHWEST
 AI4389'ON ROUTE 91 FOR 2.9 MILES (4.7 KM) TO THE STATION ON THE LEFT.
 AI4389'STATION MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT
 AI4389'FLUSH WITH THE GROUND.  IT IS 36 FEET (11.0 M) SOUTHWEST FROM THE FACE
 AI4389'OF UTILITY POLE NUMBER 223721, 5.0 FET NORTHWEST FROM A CLAPBOARD
 AI4389'FENCE POST, AND 16.5 FEET (5.0 M) SOUTHEAST FROM THE CENTERLINE OF
 AI4389'ROUTE 91.
 AI4389
 AI4389                          STATION RECOVERY (2004)
 AI4389
 AI4389'RECOVERY NOTE BY GEOCACHING 2004 (DH)
 AI4389'POSSIBLE DANGEROUS LOCATION. LOCATED ON THE SIDE OF MD RT 91 NEXT TO A
 AI4389'GUARDRAIL, NO SHOULDER AND NO PARKING AVAILABLE.
 AI4389
 AI4389                          STATION RECOVERY (2020)
 AI4389
 AI4389'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AI4389'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4390 ***********************************************************************
 AI4390  DESIGNATION -  GIS 112
 AI4390  PID         -  AI4390
 AI4390  STATE/COUNTY-  MD/BALTIMORE
 AI4390  COUNTRY     -  US
 AI4390  USGS QUAD   -  HEREFORD (2016)
 AI4390
 AI4390                         *CURRENT SURVEY CONTROL
 AI4390  ______________________________________________________________________
 AI4390* NAD 83(2011) POSITION- 39 32 10.73114(N) 076 43 40.87150(W)   ADJUSTED
 AI4390* NAD 83(2011) ELLIP HT-    70.505 (meters)        (06/27/12)   ADJUSTED
 AI4390* NAD 83(2011) EPOCH   -  2010.00
 AI4390* NAVD 88 ORTHO HEIGHT -   102.719 (meters)      337.00  (feet) ADJUSTED
 AI4390  ______________________________________________________________________
 AI4390  GEOID HEIGHT    -        -32.216 (meters)                     GEOID18
 AI4390  NAD 83(2011) X  -  1,130,810.398 (meters)                     COMP
 AI4390  NAD 83(2011) Y  - -4,794,135.641 (meters)                     COMP
 AI4390  NAD 83(2011) Z  -  4,038,458.623 (meters)                     COMP
 AI4390  LAPLACE CORR    -         -3.12  (seconds)                    DEFLEC18
 AI4390  DYNAMIC HEIGHT  -        102.667 (meters)      336.83  (feet) COMP
 AI4390  MODELED GRAVITY -    980,123.2   (mgal)                       NAVD 88
 AI4390
 AI4390  VERT ORDER      -  SECOND    CLASS I
 AI4390
 AI4390  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4390  Standards:
 AI4390         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4390            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4390  -------------------------------------------------------------------
 AI4390  NETWORK    0.49   0.86           0.22   0.18   0.44     -0.01356383
 AI4390  -------------------------------------------------------------------
 AI4390  Click here for local accuracies and other accuracy information.
 AI4390
 AI4390.The horizontal coordinates were established by GPS observations
 AI4390.and adjusted by the National Geodetic Survey in June 2012.
 AI4390
 AI4390.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4390.been affixed to the stable North American tectonic plate. See 
 AI4390.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4390
 AI4390.The horizontal coordinates are valid at the epoch date displayed above
 AI4390.which is a decimal equivalence of Year/Month/Day.
 AI4390
 AI4390.The orthometric height was determined by differential leveling and
 AI4390.adjusted by the NATIONAL GEODETIC SURVEY
 AI4390.in June 2006.
 AI4390
 AI4390.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4390.GEOID18 height accuracy estimate available here.
 AI4390
 AI4390.Click photographs - Photos may exist for this station.
 AI4390
 AI4390.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4390
 AI4390.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4390
 AI4390.The ellipsoidal height was determined by GPS observations
 AI4390.and is referenced to NAD 83.
 AI4390
 AI4390.The dynamic height is computed by dividing the NAVD 88
 AI4390.geopotential number by the normal gravity value computed on the
 AI4390.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AI4390.degrees latitude (g = 980.6199 gals.).
 AI4390
 AI4390.The modeled gravity was interpolated from observed gravity values.
 AI4390
 AI4390. The following values were computed from the NAD 83(2011) position.
 AI4390
 AI4390;                    North         East     Units Scale Factor Converg.
 AI4390;SPC MD       -   207,581.592   423,382.108   MT  1.00001624   +0 10 14.5
 AI4390;SPC MD       -   681,040.61  1,389,046.13   sFT  1.00001624   +0 10 14.5
 AI4390;UTM  18      - 4,377,720.435   351,499.582   MT  0.99987151   -1 06 00.7
 AI4390
 AI4390!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4390!SPC MD       -   0.99998894  x   1.00001624  =   1.00000518
 AI4390!UTM  18      -   0.99998894  x   0.99987151  =   0.99986045
 AI4390
 AI4390_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5149977720(NAD 83)
 AI4390
 AI4390                          SUPERSEDED SURVEY CONTROL
 AI4390
 AI4390  NAD 83(2007)-  39 32 10.73131(N)    076 43 40.87220(W) AD(2002.00) 0
 AI4390  ELLIP H (02/10/07)   70.525  (m)                       GP(2002.00)    
 AI4390  ELLIP H (08/30/02)   70.532  (m)                       GP(       ) 4 2
 AI4390  NAD 83(1991)-  39 32 10.73157(N)    076 43 40.87243(W) AD(       ) 1
 AI4390  ELLIP H (03/31/00)   70.489  (m)                       GP(       ) 3 1
 AI4390  NAVD 88 (03/31/00)  102.72   (m)  GEOID99  model used  GPS OBS        
 AI4390
 AI4390.Superseded values are not recommended for survey control.
 AI4390
 AI4390.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4390.See file dsdata.pdf to determine how the superseded data were derived.
 AI4390
 AI4390_MARKER: DD = SURVEY DISK
 AI4390_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4390_STAMPING: G.I.S. 112
 AI4390_MARK LOGO: MD-005
 AI4390_PROJECTION: FLUSH
 AI4390_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI4390_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4390+STABILITY: SURFACE MOTION
 AI4390_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4390+SATELLITE: SATELLITE OBSERVATIONS - December 12, 2024
 AI4390
 AI4390  HISTORY     - Date     Condition        Report By
 AI4390  HISTORY     - 1997     MONUMENTED       MD-005
 AI4390  HISTORY     - 19991206 GOOD             MDSHA
 AI4390  HISTORY     - 20020906 GOOD             DMW
 AI4390  HISTORY     - 20051202 GOOD             GPSSS
 AI4390  HISTORY     - 20130522 GOOD             GPSSS
 AI4390  HISTORY     - 20241212 GOOD             MDSHA
 AI4390
 AI4390                          STATION DESCRIPTION
 AI4390
 AI4390'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4390'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH).
 AI4390'
 AI4390'THE STATION IS LOCATED ABOUT 4.9 MILES (7.9 KM) SOUTHWEST OF HEREFORD
 AI4390'AND 6.0 MILES (9.7 KM) NORTHWEST OF COCKEYSVILLE ON THE PROPERTY OF
 AI4390'THE BUTLER VOLUNTEER FIRE COMPANY.
 AI4390'
 AI4390'TO REACH THE STATION FROM THE I83 OVERPASS OF BELFAST ROAD AT EXIT 24,
 AI4390'GO WEST ON BELFAST ROAD FOR 3.85 MILES (6.20 KM) TO THE INTERSECTION
 AI4390'WITH ROUTE 25 (FALLS ROAD), TURN RIGHT AND GO NORTHWEST ON ROUTE 25
 AI4390'FOR 0.15 MILES (0.24 KM) TO AN ENTRANCE TO A PAVED PARKING LOT ON THE
 AI4390'RIGHT.  TURN RIGHT AND PROCEED ABOUT 100 FEET (30.5 M) TO THE STATION
 AI4390'ON THE LEFT.
 AI4390'
 AI4390'THE STATION IS SET IN THE TOP OF A 10 INCH CONCRETE MONUMENT FLUSH
 AI4390'WITH THE GROUND.  IT IS 20.0 FEET (6.1 M) SOUTHWEST FROM THE FACE OF
 AI4390'UTILITY POLE NUMBER 508309, 83.0 FEET (25.3 M) NORTHEAST FROM THE FACE
 AI4390'OF A METAL FLAGPOLE, 6.5 FEET (2.0 M) NORTHWEST FROM THE EDGE OF THE
 AI4390'PARKING LOT, AND 116 FEET (35.4 M) NORTHEAST FROM THE CENTERLINE OF
 AI4390'ROUTE 25.
 AI4390
 AI4390                          STATION RECOVERY (1999)
 AI4390
 AI4390'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AI4390'THE STATION IS LOCATED ABOUT 6 MI (9.7 KM) NORTHWEST OF COCKEYSVILLE,
 AI4390'7.1 MI (11.4 KM) NORTHEAST OF REISTERSTOWN, AT THE BUTLER VOLUNTEER
 AI4390'FIRE STATION.  IT IS A BALTIMORE COUNTY SURVEY DISK SET IN THE TOP OF
 AI4390'A 10 INCH ROUND CONCRETE MONUMENT, 115.9 FT (35.3 M) NORTHEAST OF THE
 AI4390'CENTERLINE OF FALLS ROAD, 91.1 FT (27.8 M) SOUTH OF THE SOUTHEAST
 AI4390'CORNER OF THE FIRE STATION, 82.8 FT (25.2 M) NORTHEAST OF A METAL FLAG
 AI4390'POLE, 19.9 FT (6.1 M) SOUTHWEST OF POWER POLE NUMBER 508309, 20.3 FT
 AI4390'(6.2 M) SOUTHWEST OF A CARSONITE WITNESS POST, SET FLUSH WITH THE
 AI4390'GROUND AND SET IN A GRASS AREA BETWEEN TWO PARKING LOTS.
 AI4390
 AI4390                          STATION RECOVERY (2002)
 AI4390
 AI4390'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (DMM)
 AI4390'RECOVERED IN GOOD CONDITION.
 AI4390
 AI4390                          STATION RECOVERY (2005)
 AI4390
 AI4390'RECOVERY NOTE BY GPS SALES AND SERVICES 2005 (CJC)
 AI4390'RECOVERED IN GOOD CONDITION.
 AI4390
 AI4390                          STATION RECOVERY (2013)
 AI4390
 AI4390'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (SS)
 AI4390'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYS.
 AI4390
 AI4390                          STATION RECOVERY (2024)
 AI4390
 AI4390'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 AI4390'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4391 ***********************************************************************
 AI4391  DESIGNATION -  GIS 113
 AI4391  PID         -  AI4391
 AI4391  STATE/COUNTY-  MD/BALTIMORE
 AI4391  COUNTRY     -  US
 AI4391  USGS QUAD   -  HAMPSTEAD (2016)
 AI4391
 AI4391                         *CURRENT SURVEY CONTROL
 AI4391  ______________________________________________________________________
 AI4391* NAD 83(2011) POSITION- 39 34 25.80160(N) 076 45 15.74295(W)   ADJUSTED
 AI4391* NAD 83(2011) ELLIP HT-   141.701 (meters)        (06/27/12)   ADJUSTED
 AI4391* NAD 83(2011) EPOCH   -  2010.00
 AI4391* NAVD 88 ORTHO HEIGHT -   173.871 (meters)      570.44  (feet) ADJUSTED
 AI4391  ______________________________________________________________________
 AI4391  GEOID HEIGHT    -        -32.173 (meters)                     GEOID18
 AI4391  NAD 83(2011) X  -  1,128,009.966 (meters)                     COMP
 AI4391  NAD 83(2011) Y  - -4,792,126.443 (meters)                     COMP
 AI4391  NAD 83(2011) Z  -  4,041,715.786 (meters)                     COMP
 AI4391  LAPLACE CORR    -         -2.05  (seconds)                    DEFLEC18
 AI4391  DYNAMIC HEIGHT  -        173.784 (meters)      570.16  (feet) COMP
 AI4391  MODELED GRAVITY -    980,120.2   (mgal)                       NAVD 88
 AI4391
 AI4391  VERT ORDER      -  SECOND    CLASS I
 AI4391
 AI4391  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4391  Standards:
 AI4391         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4391            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4391  -------------------------------------------------------------------
 AI4391  NETWORK    0.61   1.00           0.27   0.22   0.51     -0.02653059
 AI4391  -------------------------------------------------------------------
 AI4391  Click here for local accuracies and other accuracy information.
 AI4391
 AI4391.The horizontal coordinates were established by GPS observations
 AI4391.and adjusted by the National Geodetic Survey in June 2012.
 AI4391
 AI4391.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4391.been affixed to the stable North American tectonic plate. See 
 AI4391.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4391
 AI4391.The horizontal coordinates are valid at the epoch date displayed above
 AI4391.which is a decimal equivalence of Year/Month/Day.
 AI4391
 AI4391.The orthometric height was determined by differential leveling and
 AI4391.adjusted by the NATIONAL GEODETIC SURVEY
 AI4391.in June 2006.
 AI4391
 AI4391.No vertical observational check was made to the station.
 AI4391
 AI4391.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4391.GEOID18 height accuracy estimate available here.
 AI4391
 AI4391.Click photographs - Photos may exist for this station.
 AI4391
 AI4391.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4391
 AI4391.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4391
 AI4391.The ellipsoidal height was determined by GPS observations
 AI4391.and is referenced to NAD 83.
 AI4391
 AI4391.The dynamic height is computed by dividing the NAVD 88
 AI4391.geopotential number by the normal gravity value computed on the
 AI4391.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AI4391.degrees latitude (g = 980.6199 gals.).
 AI4391
 AI4391.The modeled gravity was interpolated from observed gravity values.
 AI4391
 AI4391. The following values were computed from the NAD 83(2011) position.
 AI4391
 AI4391;                    North         East     Units Scale Factor Converg.
 AI4391;SPC MD       -   211,740.889   421,105.325   MT  1.00002401   +0 09 15.0
 AI4391;SPC MD       -   694,686.57  1,381,576.39   sFT  1.00002401   +0 09 15.0
 AI4391;UTM  18      - 4,381,928.620   349,315.968   MT  0.99987955   -1 07 04.3
 AI4391
 AI4391!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4391!SPC MD       -   0.99997777  x   1.00002401  =   1.00000178
 AI4391!UTM  18      -   0.99997777  x   0.99987955  =   0.99985732
 AI4391
 AI4391_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4931581928(NAD 83)
 AI4391
 AI4391                          SUPERSEDED SURVEY CONTROL
 AI4391
 AI4391  NAD 83(2007)-  39 34 25.80178(N)    076 45 15.74366(W) AD(2002.00) 0
 AI4391  ELLIP H (02/10/07)  141.721  (m)                       GP(2002.00)    
 AI4391  ELLIP H (08/30/02)  141.727  (m)                       GP(       ) 4 2
 AI4391  NAD 83(1991)-  39 34 25.80209(N)    076 45 15.74383(W) AD(       ) 1
 AI4391  ELLIP H (03/31/00)  141.670  (m)                       GP(       ) 3 1
 AI4391  NAVD 88 (03/31/00)  173.88   (m)  GEOID99  model used  GPS OBS        
 AI4391
 AI4391.Superseded values are not recommended for survey control.
 AI4391
 AI4391.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4391.See file dsdata.pdf to determine how the superseded data were derived.
 AI4391
 AI4391_MARKER: DD = SURVEY DISK
 AI4391_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4391_STAMPING: NO. GIS 113
 AI4391_MARK LOGO: MD-005
 AI4391_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI4391_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4391+STABILITY: SURFACE MOTION
 AI4391_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4391+SATELLITE: SATELLITE OBSERVATIONS - June 28, 2015
 AI4391
 AI4391  HISTORY     - Date     Condition        Report By
 AI4391  HISTORY     - 1997     MONUMENTED       MD-005
 AI4391  HISTORY     - 19991206 GOOD             MDSHA
 AI4391  HISTORY     - 20080717 GOOD             MDSHA
 AI4391  HISTORY     - 20150628 GOOD             USPSQD
 AI4391
 AI4391                          STATION DESCRIPTION
 AI4391
 AI4391'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4391'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4391'LOCATED ABOUT 5.0 MILES (8.0 KM) WEST OF HEREFORD AND 5.8 MILES (9.3
 AI4391'KM) EAST OF HAMPSTEAD.  TO REACH THE STATION FROM THE ROUTE 137 (MOUNT
 AI4391'CARMEL ROAD) OVERPASS OF I83 AT EXIT 27, GO WEST ON ROUTE 137 FOR 6.0
 AI4391'MILES (9.7 KM) TO THE INTERSECTION WITH ROUTE 25 (FALLS ROAD) , TURN
 AI4391'LEFT AND GO SOUTHEAST ON ROUTE 25 FOR 2.1 MILES (3.4 KM) TO A DIRT AND
 AI4391'STONE PULL-IN AND THE STATION ON THE LEFT.  STATION MARK IS SET IN THE
 AI4391'TOP OF A 10 INCH CONCRETE MONUMENT FLUSH WITH THE GROUND. IT IS 96
 AI4391'FEET (29.3 M) NORTHEAST FROM THE FACE OF UTILITY POLE NUMBER 268, 66
 AI4391'FEET (20.1 M) SOUTHEAST FROM THE FACE OF A DOUBLE 12 INCH TREE, 14
 AI4391'FEET (4.3 M) NORTH FROM THE CENTERLINE OF THE DIRT AND STONE PULL-IN,
 AI4391'AND 70 FEET (21.3 M) NORTHEAST OF THE CENTERLINE OF ROUTE 25.
 AI4391
 AI4391                          STATION RECOVERY (1999)
 AI4391
 AI4391'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AI4391'RECOVERED AS DESCRIBED.
 AI4391
 AI4391                          STATION RECOVERY (2008)
 AI4391
 AI4391'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 AI4391'RECOVERED IN GOOD CONDITION.
 AI4391
 AI4391                          STATION RECOVERY (2015)
 AI4391
 AI4391'RECOVERY NOTE BY US POWER SQUADRON 2015
 AI4391'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4392 ***********************************************************************
 AI4392  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4392  DESIGNATION -  GIS 114
 AI4392  PID         -  AI4392
 AI4392  STATE/COUNTY-  MD/BALTIMORE
 AI4392  COUNTRY     -  US
 AI4392  USGS QUAD   -  HAMPSTEAD (2016)
 AI4392
 AI4392                         *CURRENT SURVEY CONTROL
 AI4392  ______________________________________________________________________
 AI4392* NAD 83(2011) POSITION- 39 36 36.04882(N) 076 49 03.92197(W)   ADJUSTED
 AI4392* NAD 83(2011) ELLIP HT-   196.322 (meters)        (06/27/12)   ADJUSTED
 AI4392* NAD 83(2011) EPOCH   -  2010.00
 AI4392* NAVD 88 ORTHO HEIGHT -   228.49  (meters)      749.6   (feet) GPS OBS
 AI4392  ______________________________________________________________________
 AI4392  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4392  GEOID HEIGHT    -        -32.184 (meters)                     GEOID99
 AI4392  GEOID HEIGHT    -        -32.167 (meters)                     GEOID18
 AI4392  NAD 83(2011) X  -  1,122,133.786 (meters)                     COMP
 AI4392  NAD 83(2011) Y  - -4,790,919.690 (meters)                     COMP
 AI4392  NAD 83(2011) Z  -  4,044,846.134 (meters)                     COMP
 AI4392  LAPLACE CORR    -         -0.46  (seconds)                    DEFLEC18
 AI4392
 AI4392  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4392  Standards:
 AI4392         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4392            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4392  -------------------------------------------------------------------
 AI4392  NETWORK    0.64   1.06           0.28   0.24   0.54     -0.01571795
 AI4392  -------------------------------------------------------------------
 AI4392  Click here for local accuracies and other accuracy information.
 AI4392
 AI4392.The horizontal coordinates were established by GPS observations
 AI4392.and adjusted by the National Geodetic Survey in June 2012.
 AI4392
 AI4392.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4392.been affixed to the stable North American tectonic plate. See 
 AI4392.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4392
 AI4392.The horizontal coordinates are valid at the epoch date displayed above
 AI4392.which is a decimal equivalence of Year/Month/Day.
 AI4392
 AI4392.The orthometric height was determined by GPS observations and a
 AI4392.high-resolution geoid model using precise GPS observation and
 AI4392.processing techniques.
 AI4392
 AI4392.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4392.GEOID18 height accuracy estimate available here.
 AI4392
 AI4392.Click photographs - Photos may exist for this station.
 AI4392
 AI4392.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4392
 AI4392.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4392
 AI4392.The ellipsoidal height was determined by GPS observations
 AI4392.and is referenced to NAD 83.
 AI4392
 AI4392. The following values were computed from the NAD 83(2011) position.
 AI4392
 AI4392;                    North         East     Units Scale Factor Converg.
 AI4392;SPC MD       -   215,745.156   415,651.169   MT  1.00003191   +0 06 51.8
 AI4392;SPC MD       -   707,823.90  1,363,682.21   sFT  1.00003191   +0 06 51.8
 AI4392;UTM  18      - 4,386,052.479   343,952.844   MT  0.99989980   -1 09 33.0
 AI4392
 AI4392!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4392!SPC MD       -   0.99996920  x   1.00003191  =   1.00000111
 AI4392!UTM  18      -   0.99996920  x   0.99989980  =   0.99986900
 AI4392
 AI4392_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4395286052(NAD 83)
 AI4392
 AI4392                          SUPERSEDED SURVEY CONTROL
 AI4392
 AI4392  NAD 83(2007)-  39 36 36.04900(N)    076 49 03.92270(W) AD(2002.00) 0
 AI4392  ELLIP H (02/10/07)  196.342  (m)                       GP(2002.00)    
 AI4392  ELLIP H (08/30/02)  196.348  (m)                       GP(       ) 4 2
 AI4392  NAD 83(1991)-  39 36 36.04938(N)    076 49 03.92292(W) AD(       ) 1
 AI4392  ELLIP H (03/31/00)  196.285  (m)                       GP(       ) 3 1
 AI4392
 AI4392.Superseded values are not recommended for survey control.
 AI4392
 AI4392.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4392.See file dsdata.pdf to determine how the superseded data were derived.
 AI4392
 AI4392_MARKER: DD = SURVEY DISK
 AI4392_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4392_STAMPING: GIS 114
 AI4392_MARK LOGO: MD-005
 AI4392_PROJECTION: FLUSH
 AI4392_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4392_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4392+STABILITY: SURFACE MOTION
 AI4392_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4392+SATELLITE: SATELLITE OBSERVATIONS - May 31, 2014
 AI4392
 AI4392  HISTORY     - Date     Condition        Report By
 AI4392  HISTORY     - 1997     MONUMENTED       MD-005
 AI4392  HISTORY     - 20020906 GOOD             DMW
 AI4392  HISTORY     - 20051202 GOOD             GPSSS
 AI4392  HISTORY     - 20060714 GOOD             GPSSS
 AI4392  HISTORY     - 20140531 GOOD             RODCON
 AI4392
 AI4392                          STATION DESCRIPTION
 AI4392
 AI4392'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4392'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4392'LOCATED ABOUT 8.5 MILES (13.7 KM) WEST OF HEREFORD AND 2.0 MILES (3.2
 AI4392'KM) EAST OF HAMPSTEAD.  TO REACH THE STATION FROM THE ROUTE 137 (MOUNT
 AI4392'CARMEL ROAD) OVERPASS OF I83 AT EXIT 27, GO WEST ON ROUTE 137 FOR 6.0
 AI4392'MILES (9.7 KM) TO THE INTERSECTION WITH ROUTE 25 (FALLS ROAD) ,
 AI4392'CONTINUE STRAIGHT THROUGH THE INTERSECTION ON ROUTE 137, FOR 1.7 MILES
 AI4392'(2.7 KM) TO A TEE INTERSECTION WITH GUNPOWDER ROAD ON THE RIGHT.  BEAR
 AI4392'LEFT AND CONTINUE ON MOUNT CARMEL ROAD FOR 1.1 MILES (1.8 KM) TO THE
 AI4392'INTERSECTION WITH GRACE ROAD AND THE STATION ON THE LEFT.  STATION
 AI4392'MARK IS SET IN THE TOP OF A 10 INCH CONCRETE MONUMENT FLUSH WITH THE
 AI4392'GROUND.  IT IS 17 FEET (5.2 M) SOUTHEAST FROM THE FACE OF UTILITY POLE
 AI4392'NUMBER 88137, 23 FEET (7.0 M) NORTHWEST FROM THE CENTER LINE OF A
 AI4392'STONE DRIVEWAY, AND 28 FEET (8.5 M) SOUTHWEST FROM THE CENTERLINE OF
 AI4392'MOUNT CARMEL ROAD.
 AI4392
 AI4392                          STATION RECOVERY (2002)
 AI4392
 AI4392'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (DMM)
 AI4392'RECOVERED IN GOOD CONDITION.
 AI4392
 AI4392                          STATION RECOVERY (2005)
 AI4392
 AI4392'RECOVERY NOTE BY GPS SALES AND SERVICES 2005 (CJC)
 AI4392'RECOVERED IN GOOD CONDITION.
 AI4392
 AI4392                          STATION RECOVERY (2006)
 AI4392
 AI4392'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (SS)
 AI4392'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYING
 AI4392
 AI4392                          STATION RECOVERY (2014)
 AI4392
 AI4392'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AI4392'THE MARK IS 19 FT (5.8 M) SOUTHEAST FROM THE FACE OF A RECENTLY
 AI4392'REPLACED UTILITY POLE NUMBER 88137 GS74 AND 13 FT (4.0 M) SOUTHEAST
 AI4392'FROM A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4393 ***********************************************************************
 AI4393  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4393  DESIGNATION -  GIS 115
 AI4393  PID         -  AI4393
 AI4393  STATE/COUNTY-  MD/BALTIMORE
 AI4393  COUNTRY     -  US
 AI4393  USGS QUAD   -  HEREFORD (2016)
 AI4393
 AI4393                         *CURRENT SURVEY CONTROL
 AI4393  ______________________________________________________________________
 AI4393* NAD 83(2011) POSITION- 39 37 13.59857(N) 076 42 24.75777(W)   ADJUSTED
 AI4393* NAD 83(2011) ELLIP HT-   131.959 (meters)        (06/27/12)   ADJUSTED
 AI4393* NAD 83(2011) EPOCH   -  2010.00
 AI4393* NAVD 88 ORTHO HEIGHT -   164.19  (meters)      538.7   (feet) GPS OBS
 AI4393  ______________________________________________________________________
 AI4393  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4393  GEOID HEIGHT    -        -32.253 (meters)                     GEOID99
 AI4393  GEOID HEIGHT    -        -32.231 (meters)                     GEOID18
 AI4393  NAD 83(2011) X  -  1,131,221.888 (meters)                     COMP
 AI4393  NAD 83(2011) Y  - -4,787,972.259 (meters)                     COMP
 AI4393  NAD 83(2011) Z  -  4,045,697.228 (meters)                     COMP
 AI4393  LAPLACE CORR    -         -1.86  (seconds)                    DEFLEC18
 AI4393
 AI4393  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4393  Standards:
 AI4393         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4393            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4393  -------------------------------------------------------------------
 AI4393  NETWORK    0.75   1.18           0.33   0.28   0.60     -0.01042672
 AI4393  -------------------------------------------------------------------
 AI4393  Click here for local accuracies and other accuracy information.
 AI4393
 AI4393.The horizontal coordinates were established by GPS observations
 AI4393.and adjusted by the National Geodetic Survey in June 2012.
 AI4393
 AI4393.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4393.been affixed to the stable North American tectonic plate. See 
 AI4393.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4393
 AI4393.The horizontal coordinates are valid at the epoch date displayed above
 AI4393.which is a decimal equivalence of Year/Month/Day.
 AI4393
 AI4393.The orthometric height was determined by GPS observations and a
 AI4393.high-resolution geoid model using precise GPS observation and
 AI4393.processing techniques.
 AI4393
 AI4393.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4393.GEOID18 height accuracy estimate available here.
 AI4393
 AI4393.Click photographs - Photos may exist for this station.
 AI4393
 AI4393.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4393
 AI4393.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4393
 AI4393.The ellipsoidal height was determined by GPS observations
 AI4393.and is referenced to NAD 83.
 AI4393
 AI4393. The following values were computed from the NAD 83(2011) position.
 AI4393
 AI4393;                    North         East     Units Scale Factor Converg.
 AI4393;SPC MD       -   216,928.049   425,169.746   MT  1.00003426   +0 11 02.3
 AI4393;SPC MD       -   711,704.77  1,394,911.08   sFT  1.00003426   +0 11 02.3
 AI4393;UTM  18      - 4,387,023.451   353,493.909   MT  0.99986426   -1 05 19.2
 AI4393
 AI4393!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4393!SPC MD       -   0.99997930  x   1.00003426  =   1.00001356
 AI4393!UTM  18      -   0.99997930  x   0.99986426  =   0.99984356
 AI4393
 AI4393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5349387023(NAD 83)
 AI4393
 AI4393                          SUPERSEDED SURVEY CONTROL
 AI4393
 AI4393  NAD 83(2007)-  39 37 13.59875(N)    076 42 24.75846(W) AD(2002.00) 0
 AI4393  ELLIP H (02/10/07)  131.979  (m)                       GP(2002.00)    
 AI4393  ELLIP H (08/30/02)  131.984  (m)                       GP(       ) 4 2
 AI4393  NAD 83(1991)-  39 37 13.59908(N)    076 42 24.75850(W) AD(       ) 1
 AI4393  ELLIP H (03/31/00)  131.921  (m)                       GP(       ) 3 1
 AI4393
 AI4393.Superseded values are not recommended for survey control.
 AI4393
 AI4393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4393.See file dsdata.pdf to determine how the superseded data were derived.
 AI4393
 AI4393_MARKER: DD = SURVEY DISK
 AI4393_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4393_STAMPING: GIS 115
 AI4393_MARK LOGO: MD-005
 AI4393_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4393_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4393+STABILITY: SURFACE MOTION
 AI4393_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4393+SATELLITE: SATELLITE OBSERVATIONS - 1997
 AI4393
 AI4393  HISTORY     - Date     Condition        Report By
 AI4393  HISTORY     - 1997     MONUMENTED       MD-005
 AI4393
 AI4393                          STATION DESCRIPTION
 AI4393
 AI4393'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4393'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4393'LOCATED ABOUT 3.3 MILES (5.3 KM) NORTHWEST OF HEREFORD AND 8.0 MILES
 AI4393'(12.9 KM) EAST OF HAMPSTEAD.  TO REACH THE STATION FROM THE MIDDLETOWN
 AI4393'ROAD OVERPASS OF I83 AT EXIT 31, GO NORTHWEST ON MIDDLETOWN ROAD FOR
 AI4393'2.1 MILES (3.4 KM) TO THE INTERSECTION WITH RAYVILLE ROAD.  TURN LEFT
 AI4393'AND GO SOUTHWEST ON RAYVILLE ROAD FOR 0.8 MILES (1.3 KM) TO THE
 AI4393'INTERSECTION WITH SPOOKY HILL ROAD.  TURN LEFT AND GO SOUTHEAST ON
 AI4393'SPOOKY HILL ROAD FOR 0.5 MILES (0.8 KM) TO THE INTERSECTION WITH
 AI4393'ARMACOST ROAD ON THE LEFT AND PRETTYBOY DAM ROAD ON THE RIGHT.
 AI4393'PROCEED STRAIGHT AND GO SOUTH ON PRETTYBOY DAM ROAD FOR 1.0 MILES (1.6
 AI4393'KM) TO THE BRIDGE OVER PRETTYBOY RESERVOIR AND THE STATION ON THE
 AI4393'RIGHT.  STATION MARK IS SET IN THE TOP OF A 10 INCH CONCRETE MONUMENT
 AI4393'FLUSH WITH THE GROUND.  IT IS 7.0 FEET (2.1 M) NORTHWEST FROM THE
 AI4393'CORNER END OF THE NORTHWEST CONCRETE BRIDGE PARAPET WALL, 18.20 FEET
 AI4393'(5.55 M) SOUTH FROM THE SOUTHEAST CORNER OF AN INLET GRATE, AND 24
 AI4393'FEET (7.3 M) SOUTHWEST FROM THE CENTERLINE OF PRETTYBOY DAM ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4394 ***********************************************************************
 AI4394  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4394  DESIGNATION -  GIS 116
 AI4394  PID         -  AI4394
 AI4394  STATE/COUNTY-  MD/BALTIMORE
 AI4394  COUNTRY     -  US
 AI4394  USGS QUAD   -  LINEBORO (2016)
 AI4394
 AI4394                         *CURRENT SURVEY CONTROL
 AI4394  ______________________________________________________________________
 AI4394* NAD 83(2011) POSITION- 39 38 54.58194(N) 076 45 15.22584(W)   ADJUSTED
 AI4394* NAD 83(2011) ELLIP HT-   132.631 (meters)        (06/27/12)   ADJUSTED
 AI4394* NAD 83(2011) EPOCH   -  2010.00
 AI4394* NAVD 88 ORTHO HEIGHT -   164.87  (meters)      540.9   (feet) GPS OBS
 AI4394  ______________________________________________________________________
 AI4394  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4394  GEOID HEIGHT    -        -32.256 (meters)                     GEOID99
 AI4394  GEOID HEIGHT    -        -32.233 (meters)                     GEOID18
 AI4394  NAD 83(2011) X  -  1,126,809.380 (meters)                     COMP
 AI4394  NAD 83(2011) Y  - -4,786,972.186 (meters)                     COMP
 AI4394  NAD 83(2011) Z  -  4,048,096.220 (meters)                     COMP
 AI4394  LAPLACE CORR    -         -0.22  (seconds)                    DEFLEC18
 AI4394
 AI4394  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4394  Standards:
 AI4394         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4394            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4394  -------------------------------------------------------------------
 AI4394  NETWORK    0.73   1.14           0.32   0.27   0.58     -0.02514309
 AI4394  -------------------------------------------------------------------
 AI4394  Click here for local accuracies and other accuracy information.
 AI4394
 AI4394.The horizontal coordinates were established by GPS observations
 AI4394.and adjusted by the National Geodetic Survey in June 2012.
 AI4394
 AI4394.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4394.been affixed to the stable North American tectonic plate. See 
 AI4394.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4394
 AI4394.The horizontal coordinates are valid at the epoch date displayed above
 AI4394.which is a decimal equivalence of Year/Month/Day.
 AI4394
 AI4394.The orthometric height was determined by GPS observations and a
 AI4394.high-resolution geoid model using precise GPS observation and
 AI4394.processing techniques.
 AI4394
 AI4394.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4394.GEOID18 height accuracy estimate available here.
 AI4394
 AI4394.Click photographs - Photos may exist for this station.
 AI4394
 AI4394.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4394
 AI4394.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4394
 AI4394.The ellipsoidal height was determined by GPS observations
 AI4394.and is referenced to NAD 83.
 AI4394
 AI4394. The following values were computed from the NAD 83(2011) position.
 AI4394
 AI4394;                    North         East     Units Scale Factor Converg.
 AI4394;SPC MD       -   220,030.582   421,095.349   MT  1.00004076   +0 09 15.3
 AI4394;SPC MD       -   721,883.67  1,381,543.66   sFT  1.00004076   +0 09 15.3
 AI4394;UTM  18      - 4,390,215.221   349,490.122   MT  0.99987890   -1 07 10.3
 AI4394
 AI4394!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4394!SPC MD       -   0.99997919  x   1.00004076  =   1.00001995
 AI4394!UTM  18      -   0.99997919  x   0.99987890  =   0.99985810
 AI4394
 AI4394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4949090215(NAD 83)
 AI4394
 AI4394                          SUPERSEDED SURVEY CONTROL
 AI4394
 AI4394  NAD 83(2007)-  39 38 54.58211(N)    076 45 15.22653(W) AD(2002.00) 0
 AI4394  ELLIP H (02/10/07)  132.652  (m)                       GP(2002.00)    
 AI4394  ELLIP H (08/30/02)  132.656  (m)                       GP(       ) 4 2
 AI4394  NAD 83(1991)-  39 38 54.58239(N)    076 45 15.22667(W) AD(       ) 1
 AI4394  ELLIP H (03/31/00)  132.588  (m)                       GP(       ) 3 1
 AI4394
 AI4394.Superseded values are not recommended for survey control.
 AI4394
 AI4394.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4394.See file dsdata.pdf to determine how the superseded data were derived.
 AI4394
 AI4394_MARKER: DD = SURVEY DISK
 AI4394_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4394_STAMPING: GIS 116
 AI4394_MARK LOGO: MD-005
 AI4394_PROJECTION: FLUSH
 AI4394_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4394_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4394+STABILITY: SURFACE MOTION
 AI4394_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4394+SATELLITE: SATELLITE OBSERVATIONS - March 12, 2020
 AI4394
 AI4394  HISTORY     - Date     Condition        Report By
 AI4394  HISTORY     - 1997     MONUMENTED       MD-005
 AI4394  HISTORY     - 20200312 GOOD             WTBALL
 AI4394
 AI4394                          STATION DESCRIPTION
 AI4394
 AI4394'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4394'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4394'LOCATED ABOUT 6.4 MILES (10.3 KM) NORTHWEST OF HEREFORD AND 5.8 MILES
 AI4394'(9.3 KM) NORTHEAST OF HAMPSTEAD.  TO REACH THE STATION FROM THE
 AI4394'MIDDLETOWN ROAD OVERPASS OF I83 AT EXIT 31, GO NORTHWEST ON MIDDLETOWN
 AI4394'ROAD FOR 4.7 MILES (7.6 KM) TO THE INTERSECTION WITH BECKLEYSVILLE
 AI4394'ROAD.  TURN LEFT AND GO SOUTHWEST ON BECKLEYSVILLE ROAD FOR 3.1 MILES
 AI4394'(5.0 KM) TO THE INTERSECTION WITH BRIDGE OVER PRETTYBOY RESERVOIR AND
 AI4394'THE STATION ON THE RIGHT.  STATION MARK IS SET IN THE TOP OF A 10 INCH
 AI4394'CONCRETE MONUMENT FLUSH WITH THE GROUND.  IT IS 26.0 FEET (7.9 M)
 AI4394'NORTH FROM THE FACE OF A LARGE BOULDER IN A DIRT PARKING AREA, 72.80
 AI4394'FEET (22.19 M) SOUTHEAST FROM A SURVEY TACK AND RIBBON SET IN THE FACE
 AI4394'OF A 15 INCH TREE, AND 49 FEET (14.9 M) NORTHWEST FROM THE CENTERLINE
 AI4394'OF PRETTYBOY DAM ROAD.
 AI4394
 AI4394                          STATION RECOVERY (2020)
 AI4394
 AI4394'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AI4394'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4395 ***********************************************************************
 AI4395  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4395  DESIGNATION -  GIS 117
 AI4395  PID         -  AI4395
 AI4395  STATE/COUNTY-  MD/BALTIMORE
 AI4395  COUNTRY     -  US
 AI4395  USGS QUAD   -  LINEBORO (2016)
 AI4395
 AI4395                         *CURRENT SURVEY CONTROL
 AI4395  ______________________________________________________________________
 AI4395* NAD 83(2011) POSITION- 39 40 10.13957(N) 076 48 09.99729(W)   ADJUSTED
 AI4395* NAD 83(2011) ELLIP HT-   199.321 (meters)        (06/27/12)   ADJUSTED
 AI4395* NAD 83(2011) EPOCH   -  2010.00
 AI4395* NAVD 88 ORTHO HEIGHT -   231.60  (meters)      759.8   (feet) GPS OBS
 AI4395  ______________________________________________________________________
 AI4395  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4395  GEOID HEIGHT    -        -32.293 (meters)                     GEOID99
 AI4395  GEOID HEIGHT    -        -32.274 (meters)                     GEOID18
 AI4395  NAD 83(2011) X  -  1,122,425.072 (meters)                     COMP
 AI4395  NAD 83(2011) Y  - -4,786,527.231 (meters)                     COMP
 AI4395  NAD 83(2011) Z  -  4,049,932.814 (meters)                     COMP
 AI4395  LAPLACE CORR    -          0.65  (seconds)                    DEFLEC18
 AI4395
 AI4395  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4395  Standards:
 AI4395         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4395            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4395  -------------------------------------------------------------------
 AI4395  NETWORK    0.78   1.22           0.34   0.29   0.62     -0.10223294
 AI4395  -------------------------------------------------------------------
 AI4395  Click here for local accuracies and other accuracy information.
 AI4395
 AI4395.The horizontal coordinates were established by GPS observations
 AI4395.and adjusted by the National Geodetic Survey in June 2012.
 AI4395
 AI4395.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4395.been affixed to the stable North American tectonic plate. See 
 AI4395.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4395
 AI4395.The horizontal coordinates are valid at the epoch date displayed above
 AI4395.which is a decimal equivalence of Year/Month/Day.
 AI4395
 AI4395.The orthometric height was determined by GPS observations and a
 AI4395.high-resolution geoid model using precise GPS observation and
 AI4395.processing techniques.
 AI4395
 AI4395.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4395.GEOID18 height accuracy estimate available here.
 AI4395
 AI4395.Click photographs - Photos may exist for this station.
 AI4395
 AI4395.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4395
 AI4395.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4395
 AI4395.The ellipsoidal height was determined by GPS observations
 AI4395.and is referenced to NAD 83.
 AI4395
 AI4395. The following values were computed from the NAD 83(2011) position.
 AI4395
 AI4395;                    North         East     Units Scale Factor Converg.
 AI4395;SPC MD       -   222,350.850   416,923.310   MT  1.00004577   +0 07 25.6
 AI4395;SPC MD       -   729,496.08  1,367,855.89   sFT  1.00004577   +0 07 25.6
 AI4395;UTM  18      - 4,392,627.319   345,371.360   MT  0.99989437   -1 09 03.8
 AI4395
 AI4395!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4395!SPC MD       -   0.99996873  x   1.00004577  =   1.00001450
 AI4395!UTM  18      -   0.99996873  x   0.99989437  =   0.99986310
 AI4395
 AI4395_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4537192627(NAD 83)
 AI4395
 AI4395                          SUPERSEDED SURVEY CONTROL
 AI4395
 AI4395  NAD 83(2007)-  39 40 10.13977(N)    076 48 09.99804(W) AD(2002.00) 0
 AI4395  ELLIP H (02/10/07)  199.342  (m)                       GP(2002.00)    
 AI4395  ELLIP H (08/30/02)  199.338  (m)                       GP(       ) 4 2
 AI4395  NAD 83(1991)-  39 40 10.13986(N)    076 48 09.99816(W) AD(       ) 1
 AI4395  ELLIP H (03/31/00)  199.264  (m)                       GP(       ) 3 1
 AI4395
 AI4395.Superseded values are not recommended for survey control.
 AI4395
 AI4395.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4395.See file dsdata.pdf to determine how the superseded data were derived.
 AI4395
 AI4395_MARKER: DD = SURVEY DISK
 AI4395_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4395_STAMPING: GIS 117
 AI4395_MARK LOGO: MD-005
 AI4395_PROJECTION: FLUSH
 AI4395_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4395_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4395+STABILITY: SURFACE MOTION
 AI4395_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AI4395+SATELLITE: SATELLITE OBSERVATIONS - December 29, 2021
 AI4395
 AI4395  HISTORY     - Date     Condition        Report By
 AI4395  HISTORY     - 1997     MONUMENTED       MD-005
 AI4395  HISTORY     - 20211229 GOOD             MD-005
 AI4395
 AI4395                          STATION DESCRIPTION
 AI4395
 AI4395'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4395'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4395'LOCATED ABOUT 9.5 MILES (15.3 KM) NORTHWEST OF HEREFORD AND 4.7 MILES
 AI4395'(7.6 KM) NORTHEAST OF HAMPSTEAD.  TO REACH THE STATION FROM THE ROUTE
 AI4395'137 (MOUNT CARMEL ROAD) OVERPASS OF I83 AT EXIT 27, GO WEST ON ROUTE
 AI4395'137 FOR 6.0 MILES (9.7 KM) TO THE INTERSECTION WITH ROUTE 25 (FALLS
 AI4395'ROAD) , TURN RIGHT AND GO NORTHWEST ON ROUTE 25 FOR 4.1 MILES (6.6 KM)
 AI4395'TO THE INTERSECTION WITH GRAVES RUN ROAD.  TURN RIGHT AND GO NORTHEAST
 AI4395'ON GRAVES RUN ROAD FOR 1.15 MILES (1.85 KM) TO THE INTERSECTION WITH
 AI4395'CHURCH ROAD.  TURN LEFT AND PROCEED WEST ON CHURCH ROAD FOR 60 FEET
 AI4395'(18.3 M) TO THE STATION ON THE RIGHT.  STATION MARK IS SET IN THE TOP
 AI4395'OF A 10 INCH CONCRETE MONUMENT FLUSH WITH THE GROUND.  IT IS 51.0 FEET
 AI4395'(15.5 M) NORTHWEST FROM THE FACE OF UTILITY POLE NUMBER 492329, 28.0
 AI4395'FEET (8.5 M) WEST FROM THE FACE OF A 4 FOOT (1.2 M) HIGH WOOD POST,
 AI4395'14.5 FEET (4.4 M) NORTH FROM THE CENTERLINE OF CHURCH ROAD, AND 67
 AI4395'FEET (20.4 M) WEST FROM THE CENTERLINE OF GRAVES RUN ROAD.
 AI4395
 AI4395                          STATION RECOVERY (2021)
 AI4395
 AI4395'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2021 (JG)
 AI4395'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4396 ***********************************************************************
 AI4396  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4396  DESIGNATION -  GIS 118
 AI4396  PID         -  AI4396
 AI4396  STATE/COUNTY-  MD/BALTIMORE
 AI4396  COUNTRY     -  US
 AI4396  USGS QUAD   -  LINEBORO (2016)
 AI4396
 AI4396                         *CURRENT SURVEY CONTROL
 AI4396  ______________________________________________________________________
 AI4396* NAD 83(2011) POSITION- 39 43 07.88705(N) 076 46 41.25310(W)   ADJUSTED
 AI4396* NAD 83(2011) ELLIP HT-   239.080 (meters)        (06/27/12)   ADJUSTED
 AI4396* NAD 83(2011) EPOCH   -  2010.00
 AI4396* NAVD 88 ORTHO HEIGHT -   271.47  (meters)      890.6   (feet) GPS OBS
 AI4396  ______________________________________________________________________
 AI4396  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4396  GEOID HEIGHT    -        -32.407 (meters)                     GEOID99
 AI4396  GEOID HEIGHT    -        -32.395 (meters)                     GEOID18
 AI4396  NAD 83(2011) X  -  1,123,690.492 (meters)                     COMP
 AI4396  NAD 83(2011) Y  - -4,782,665.074 (meters)                     COMP
 AI4396  NAD 83(2011) Z  -  4,054,176.532 (meters)                     COMP
 AI4396  LAPLACE CORR    -          1.79  (seconds)                    DEFLEC18
 AI4396
 AI4396  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4396  Standards:
 AI4396         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4396            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4396  -------------------------------------------------------------------
 AI4396  NETWORK    0.70   1.16           0.31   0.26   0.59     -0.05447285
 AI4396  -------------------------------------------------------------------
 AI4396  Click here for local accuracies and other accuracy information.
 AI4396
 AI4396.The horizontal coordinates were established by GPS observations
 AI4396.and adjusted by the National Geodetic Survey in June 2012.
 AI4396
 AI4396.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4396.been affixed to the stable North American tectonic plate. See 
 AI4396.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4396
 AI4396.The horizontal coordinates are valid at the epoch date displayed above
 AI4396.which is a decimal equivalence of Year/Month/Day.
 AI4396
 AI4396.The orthometric height was determined by GPS observations and a
 AI4396.high-resolution geoid model using precise GPS observation and
 AI4396.processing techniques.
 AI4396
 AI4396.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4396.GEOID18 height accuracy estimate available here.
 AI4396
 AI4396.Click photographs - Photos may exist for this station.
 AI4396
 AI4396.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4396
 AI4396.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4396
 AI4396.The ellipsoidal height was determined by GPS observations
 AI4396.and is referenced to NAD 83.
 AI4396
 AI4396. The following values were computed from the NAD 83(2011) position.
 AI4396
 AI4396;                    North         East     Units Scale Factor Converg.
 AI4396;SPC MD       -   227,837.941   419,025.249   MT  1.00005810   +0 08 21.3
 AI4396;SPC MD       -   747,498.31  1,374,752.00   sFT  1.00005810   +0 08 21.3
 AI4396;UTM  18      - 4,398,065.391   347,594.539   MT  0.99988597   -1 08 11.3
 AI4396
 AI4396!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4396!SPC MD       -   0.99996249  x   1.00005810  =   1.00002059
 AI4396!UTM  18      -   0.99996249  x   0.99988597  =   0.99984847
 AI4396
 AI4396_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4759498065(NAD 83)
 AI4396
 AI4396                          SUPERSEDED SURVEY CONTROL
 AI4396
 AI4396  NAD 83(2007)-  39 43 07.88724(N)    076 46 41.25384(W) AD(2002.00) 0
 AI4396  ELLIP H (02/10/07)  239.100  (m)                       GP(2002.00)    
 AI4396  ELLIP H (08/30/02)  239.100  (m)                       GP(       ) 4 2
 AI4396  NAD 83(1991)-  39 43 07.88739(N)    076 46 41.25397(W) AD(       ) 1
 AI4396  ELLIP H (03/31/00)  239.020  (m)                       GP(       ) 3 1
 AI4396
 AI4396.Superseded values are not recommended for survey control.
 AI4396
 AI4396.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4396.See file dsdata.pdf to determine how the superseded data were derived.
 AI4396
 AI4396_MARKER: DD = SURVEY DISK
 AI4396_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4396_STAMPING: GIS 118
 AI4396_MARK LOGO: MD-005
 AI4396_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4396_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4396+STABILITY: SURFACE MOTION
 AI4396_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AI4396+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2004
 AI4396
 AI4396  HISTORY     - Date     Condition        Report By
 AI4396  HISTORY     - 1997     MONUMENTED       MD-005
 AI4396  HISTORY     - 20041129 GOOD             GEOCAC
 AI4396
 AI4396                          STATION DESCRIPTION
 AI4396
 AI4396'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4396'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4396'LOCATED ABOUT 10.7 MILES (17.2 KM) NORTHWEST OF HEREFORD AND 8.7 MILES
 AI4396'(14.0 KM) NORTHEAST OF HAMPSTEAD.  TO REACH THE STATION FROM THE
 AI4396'MIDDLETOWN ROAD OVERPASS OF I83 AT EXIT 31, GO NORTHWEST ON MIDDLETOWN
 AI4396'ROAD FOR 8.5 MILES (13.7 KM) TO THE INTERSECTION WITH PENNSYLVANIA
 AI4396'ROUTE 851.  CONTINUE STRAIGHT AND GO NORTHWEST ON PA ROUTE 851 FOR 0.4
 AI4396'MILES (0.6 KM) TO THE INTERSECTION WITH HOFFMANVILLE ROAD.  TURN LEFT
 AI4396'AND GO SOUTHWEST FOR 0.6 MILES (1.0 KM) TO THE MARYLAND-PENNSYLVANIA
 AI4396'LINE AND THE CHANGE OF ROAD NAME TO GUNPOWDER ROAD.  CONTINUE
 AI4396'SOUTHWEST ON GUNPOWDER ROAD FOR 0.15 MILES (0.24 KM) TO A STONE
 AI4396'DRIVEWAY AND THE STATION ON THE LEFT.  STATION MARK IS SET IN THE TOP
 AI4396'OF A 10 INCH CONCRETE MONUMENT FLUSH WITH THE GROUND.  IT IS NORTHEAST
 AI4396'OF HOUSE NUMBER 21615 AND ACROSS GUNPOWDER ROAD FROM BETWEEN HOUSE
 AI4396'NUMBER 21614 AND HOUSE NUMBER 21700.  IT IS 18.40 FEET (5.61 M) SOUTH
 AI4396'FROM THE FACE OF A METAL LIGHT POLE, 17.5 FEET (5.3 M) WEST OF THE
 AI4396'CENTERLINE OF A 15 FOOT (4.6 M) WIDE STONE DRIVEWAY, AND 30.4 FEET
 AI4396'(9.3 M) SOUTH OF THE CENTERLINE OF GUNPOWDER ROAD.
 AI4396
 AI4396                          STATION RECOVERY (2004)
 AI4396
 AI4396'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 AI4396'STATION IS IN GOOD CONDITION FLUSH WITH THE SURFACE, NORTHEAST OF
 AI4396'HOUSE NUMBER 21615 AND ACROSS GUNPOWDER ROAD FROM BETWEEN HOUSE NUMBER
 AI4396'21614 AND HOUSE NUMBER 21700, 30.4 FEET SOUTH OF THE CENTERLINE OF
 AI4396'GUNPOWDER ROAD, 17.5 FEET WEST OF THE CENTERLINE OF A
 AI4396'GRAVEL DRIVEWAY LEADING SOUTHEAST TO HOUSES NUMBER 21619, 21623 AND
 AI4396'21627, ABOUT 28 FEET NORTHEAST OF A DIRT DRIVEWAY LEADING SOUTHEAST,
 AI4396'AND 3.5 FEET SOUTH OF THE MORE WESTERLY OF TWO FOUR-BY-SIX WOOD POSTS
 AI4396'THAT SUPPORT A SIGN FOR THE SOPHIA CENTER HABITAT RESTORATION AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4397 ***********************************************************************
 AI4397  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4397  DESIGNATION -  GIS 119
 AI4397  PID         -  AI4397
 AI4397  STATE/COUNTY-  MD/BALTIMORE
 AI4397  COUNTRY     -  US
 AI4397  USGS QUAD   -  NORRISVILLE (2016)
 AI4397
 AI4397                         *CURRENT SURVEY CONTROL
 AI4397  ______________________________________________________________________
 AI4397* NAD 83(2011) POSITION- 39 43 11.93152(N) 076 35 00.02677(W)   ADJUSTED
 AI4397* NAD 83(2011) ELLIP HT-   186.689 (meters)        (06/27/12)   ADJUSTED
 AI4397* NAD 83(2011) EPOCH   -  2010.00
 AI4397* NAVD 88 ORTHO HEIGHT -   219.12  (meters)      718.9   (feet) GPS OBS
 AI4397  ______________________________________________________________________
 AI4397  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4397  GEOID HEIGHT    -        -32.458 (meters)                     GEOID99
 AI4397  GEOID HEIGHT    -        -32.442 (meters)                     GEOID18
 AI4397  NAD 83(2011) X  -  1,139,915.466 (meters)                     COMP
 AI4397  NAD 83(2011) Y  - -4,778,700.563 (meters)                     COMP
 AI4397  NAD 83(2011) Z  -  4,054,239.002 (meters)                     COMP
 AI4397  LAPLACE CORR    -         -1.69  (seconds)                    DEFLEC18
 AI4397
 AI4397  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4397  Standards:
 AI4397         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4397            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4397  -------------------------------------------------------------------
 AI4397  NETWORK    0.61   1.02           0.27   0.22   0.52      0.05826053
 AI4397  -------------------------------------------------------------------
 AI4397  Click here for local accuracies and other accuracy information.
 AI4397
 AI4397.The horizontal coordinates were established by GPS observations
 AI4397.and adjusted by the National Geodetic Survey in June 2012.
 AI4397
 AI4397.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4397.been affixed to the stable North American tectonic plate. See 
 AI4397.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4397
 AI4397.The horizontal coordinates are valid at the epoch date displayed above
 AI4397.which is a decimal equivalence of Year/Month/Day.
 AI4397
 AI4397.The orthometric height was determined by GPS observations and a
 AI4397.high-resolution geoid model using precise GPS observation and
 AI4397.processing techniques.
 AI4397
 AI4397.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4397.GEOID18 height accuracy estimate available here.
 AI4397
 AI4397.Click photographs - Photos may exist for this station.
 AI4397
 AI4397.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4397
 AI4397.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4397
 AI4397.The ellipsoidal height was determined by GPS observations
 AI4397.and is referenced to NAD 83.
 AI4397
 AI4397. The following values were computed from the NAD 83(2011) position.
 AI4397
 AI4397;                    North         East     Units Scale Factor Converg.
 AI4397;SPC MD       -   228,021.098   435,727.009   MT  1.00005839   +0 15 41.4
 AI4397;SPC MD       -   748,099.22  1,429,547.70   sFT  1.00005839   +0 15 41.4
 AI4397;UTM  18      - 4,397,877.023   364,292.860   MT  0.99982673   -1 00 43.1
 AI4397
 AI4397!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4397!SPC MD       -   0.99997071  x   1.00005839  =   1.00002910
 AI4397!UTM  18      -   0.99997071  x   0.99982673  =   0.99979745
 AI4397
 AI4397_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6429297877(NAD 83)
 AI4397
 AI4397                          SUPERSEDED SURVEY CONTROL
 AI4397
 AI4397  NAD 83(2007)-  39 43 11.93168(N)    076 35 00.02745(W) AD(2002.00) 0
 AI4397  ELLIP H (02/10/07)  186.709  (m)                       GP(2002.00)    
 AI4397  ELLIP H (08/30/02)  186.713  (m)                       GP(       ) 4 2
 AI4397  NAD 83(1991)-  39 43 11.93209(N)    076 35 00.02699(W) AD(       ) 1
 AI4397  ELLIP H (03/31/00)  186.625  (m)                       GP(       ) 3 1
 AI4397
 AI4397.Superseded values are not recommended for survey control.
 AI4397
 AI4397.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4397.See file dsdata.pdf to determine how the superseded data were derived.
 AI4397
 AI4397_MARKER: DD = SURVEY DISK
 AI4397_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4397_STAMPING: GIS 119
 AI4397_MARK LOGO: MD-005
 AI4397_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4397_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4397+STABILITY: SURFACE MOTION
 AI4397_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4397+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2007
 AI4397
 AI4397  HISTORY     - Date     Condition        Report By
 AI4397  HISTORY     - 1997     MONUMENTED       MD-005
 AI4397  HISTORY     - 20070316 GOOD             GPSSS
 AI4397
 AI4397                          STATION DESCRIPTION
 AI4397
 AI4397'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4397'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4397'LOCATED ABOUT 3.4 MILES (5.5 KM) EAST OF THE TOWN OF MARYLAND LINE AND
 AI4397'2.3 MILES (3.7 KM) SOUTH OF STEWARTSTOWN, PENNSYLVANIA.  TO REACH THE
 AI4397'STATION FROM THE ROUTE 439 (OLD YORK ROAD) OVERPASS OF I83 AT EXIT 36,
 AI4397'GO EAST ON ROUTE 439 FOR 1.1 MILES (1.8 KM) TO THE INTERSECTION WITH
 AI4397'BOND ROAD.  TURN LEFT AND GO NORTHEAST ON BOND ROAD FOR 2.1 MILES (3.4
 AI4397'KM) TO THE INTERSECTION WITH WEST LIBERTY ROAD AND HARRIS MILL ROAD.
 AI4397'PROCEED NORTHEAST STRAIGHT ON WEST LIBERTY ROAD FOR 0.5 MILES (0.8 KM)
 AI4397'TO THE INTERSECTIOON WITH LIEB ROAD.  BEAR LEFT AND GO NORTHWEST ON
 AI4397'WEST LIBERTY ROAD FOR 0.5 MILES (0.8 KM) TO THE STATION ON THE LEFT.
 AI4397'STATION MARK IS SET IN THE TOP OF A 10 INCH CONCRETE MONUMENT FLUSH
 AI4397'WITH THE GROUND.  IT IS 300 FEET (91.4 M) SOUTHWEST FROM HOUSE NUMBER
 AI4397'21715, 102 FEET (31.1 M) SOUTHWEST FROM THE FACE OF UTILITY POLE
 AI4397'NUMBER 478135, AND 20 FEET (6.1 M) WEST FROM THE CENTERLINE OF WEST
 AI4397'LIBERTY ROAD.
 AI4397
 AI4397                          STATION RECOVERY (2007)
 AI4397
 AI4397'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (TT)
 AI4397'RECOVERED BY TED OF SURVEY SURVICES OF MD, LLC.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7695 ***********************************************************************
 AC7695  DESIGNATION -  GIS 12
 AC7695  PID         -  AC7695
 AC7695  STATE/COUNTY-  MD/BALTIMORE
 AC7695  COUNTRY     -  US
 AC7695  USGS QUAD   -  BALTIMORE EAST (2016)
 AC7695
 AC7695                         *CURRENT SURVEY CONTROL
 AC7695  ______________________________________________________________________
 AC7695* NAD 83(2011) POSITION- 39 22 22.34525(N) 076 31 38.60811(W)   ADJUSTED
 AC7695* NAD 83(2011) ELLIP HT-    53.354 (meters)        (06/27/12)   ADJUSTED
 AC7695* NAD 83(2011) EPOCH   -  2010.00
 AC7695* NAVD 88 ORTHO HEIGHT -    86.125 (meters)      282.56  (feet) ADJUSTED
 AC7695  ______________________________________________________________________
 AC7695  GEOID HEIGHT    -        -32.790 (meters)                     GEOID18
 AC7695  NAD 83(2011) X  -  1,150,274.185 (meters)                     COMP
 AC7695  NAD 83(2011) Y  - -4,801,347.564 (meters)                     COMP
 AC7695  NAD 83(2011) Z  -  4,024,436.667 (meters)                     COMP
 AC7695  LAPLACE CORR    -         -4.25  (seconds)                    DEFLEC18
 AC7695  DYNAMIC HEIGHT  -         86.079 (meters)      282.41  (feet) COMP
 AC7695  MODELED GRAVITY -    980,094.4   (mgal)                       NAVD 88
 AC7695
 AC7695  VERT ORDER      -  SECOND    CLASS II
 AC7695
 AC7695  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7695  Standards:
 AC7695         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7695            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7695  -------------------------------------------------------------------
 AC7695  NETWORK    0.48   0.84           0.21   0.18   0.43     -0.03765409
 AC7695  -------------------------------------------------------------------
 AC7695  Click here for local accuracies and other accuracy information.
 AC7695
 AC7695.The horizontal coordinates were established by GPS observations
 AC7695.and adjusted by the National Geodetic Survey in June 2012.
 AC7695
 AC7695.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7695.been affixed to the stable North American tectonic plate. See 
 AC7695.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7695
 AC7695.The horizontal coordinates are valid at the epoch date displayed above
 AC7695.which is a decimal equivalence of Year/Month/Day.
 AC7695
 AC7695.The orthometric height was determined by differential leveling and
 AC7695.adjusted by the NATIONAL GEODETIC SURVEY
 AC7695.in February 1998.
 AC7695
 AC7695.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7695.GEOID18 height accuracy estimate available here.
 AC7695
 AC7695.Click photographs - Photos may exist for this station.
 AC7695
 AC7695.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7695
 AC7695.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7695
 AC7695.The ellipsoidal height was determined by GPS observations
 AC7695.and is referenced to NAD 83.
 AC7695
 AC7695.The dynamic height is computed by dividing the NAVD 88
 AC7695.geopotential number by the normal gravity value computed on the
 AC7695.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7695.degrees latitude (g = 980.6199 gals.).
 AC7695
 AC7695.The modeled gravity was interpolated from observed gravity values.
 AC7695
 AC7695. The following values were computed from the NAD 83(2011) position.
 AC7695
 AC7695;                    North         East     Units Scale Factor Converg.
 AC7695;SPC MD       -   189,506.307   440,723.963   MT  0.99998742   +0 17 47.9
 AC7695;SPC MD       -   621,738.61  1,445,941.87   sFT  0.99998742   +0 17 47.9
 AC7695;UTM  18      - 4,359,268.695   368,434.431   MT  0.99981312   -0 58 08.6
 AC7695
 AC7695!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7695!SPC MD       -   0.99999163  x   0.99998742  =   0.99997905
 AC7695!UTM  18      -   0.99999163  x   0.99981312  =   0.99980475
 AC7695
 AC7695_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6843459268(NAD 83)
 AC7695
 AC7695                          SUPERSEDED SURVEY CONTROL
 AC7695
 AC7695  NAD 83(2007)-  39 22 22.34546(N)    076 31 38.60884(W) AD(2002.00) 0
 AC7695  ELLIP H (02/10/07)   53.371  (m)                       GP(2002.00)    
 AC7695  ELLIP H (08/30/02)   53.377  (m)                       GP(       ) 4 2
 AC7695  NAD 83(1991)-  39 22 22.34601(N)    076 31 38.60852(W) AD(       ) 1
 AC7695  ELLIP H (04/08/97)   53.361  (m)                       GP(       ) 3 1
 AC7695  NAVD 88              86.13   (m)          282.6    (f) LEVELING    3  
 AC7695  NAVD 88 (04/08/97)   86.1    (m)  GEOID93  model used  GPS OBS        
 AC7695
 AC7695.Superseded values are not recommended for survey control.
 AC7695
 AC7695.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7695.See file dsdata.pdf to determine how the superseded data were derived.
 AC7695
 AC7695_MARKER: DD = SURVEY DISK
 AC7695_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7695_STAMPING: NO. GIS-12
 AC7695_MARK LOGO: MD-005
 AC7695_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AC7695_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7695+STABILITY: SURFACE MOTION
 AC7695_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7695+SATELLITE: SATELLITE OBSERVATIONS - October 17, 2014
 AC7695
 AC7695  HISTORY     - Date     Condition        Report By
 AC7695  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7695  HISTORY     - 19961002 GOOD             MCCRON
 AC7695  HISTORY     - 19990401 GOOD             AMTHOM
 AC7695  HISTORY     - 20030516 GOOD             DMW
 AC7695  HISTORY     - 20050615 GOOD             DEWDAV
 AC7695  HISTORY     - 20060331 GOOD             GPSSS
 AC7695  HISTORY     - 20090316 GOOD             JMTMD
 AC7695  HISTORY     - 20111005 GOOD             INDIV
 AC7695  HISTORY     - 20131202 GOOD             INDIV
 AC7695  HISTORY     - 20141017 POOR             INDIV
 AC7695
 AC7695                          STATION DESCRIPTION
 AC7695
 AC7695'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7695'STATION IS LOCATED ABOUT 6.0 MILES NORTHEAST OF THE CENTER OF
 AC7695'BALTIMORE AND NEAR THE NORTHEAST CORNER OF THE BALTIMORE CITY LIMITS
 AC7695'ON THE GROUNDS OF DOUBLE ROCK PARK IN PARKVILLE. TO REACH STATION FROM
 AC7695'I-695 (BELTWAY) TAKE EXIT 31 TO HARFORD ROAD (ROUTE 147) SOUTH. FROM
 AC7695'THE HARFORD ROAD OVERPASS OVER I-695 GO SOUTH ON HARFORD ROAD FOR 0.7
 AC7695'MI (1.1 KM) TO TEXAS ROAD. TURN LEFT AND GO SOUTHEAST ON TEXAS RD FOR
 AC7695'0.7 MI (1.1 KM) TO THE INTERSECTION WITH GLEN ROAD. CROSS GLEN ROAD TO
 AC7695'THE ENTRANCE TO DOUBLE ROCK PARK AND STATION ON THE RIGHT. STATION IS
 AC7695'SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AC7695'THE GROUND. IT IS 39.30 FT (11.98 M) SOUTHEAST OF THE CENTERLINE OF
 AC7695'GLEN ROAD, 3.10 FT (0.94 M) SOUTH OF THE SOUTHEAST CORNER OF A WOOD
 AC7695'PLANTER UNDER PARK SIGN, 6.82 FT (2.08 M) NORTHWEST OF THE FACE OF
 AC7695'CURB AND 12.45 FT (3.79 M) SOUTHWEST OF THE SOUTHERNMOST GATE POST AT
 AC7695'THE PARK ENTRANCE.
 AC7695
 AC7695                          STATION RECOVERY (1996)
 AC7695
 AC7695'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996
 AC7695'STATION IS LOCATED ABOUT 6.0 MI (9.66 KM) NORTHEAST OF THE CENTER OF
 AC7695'BALTIMORE AND NEAR THE NORTHEAST CORNER OF THE BALTIMORE CITY LIMITS
 AC7695'ON THE GROUNDS OF THE DOUBLE ROCK PARK IN PARKVILLE. TO REACH STATION
 AC7695'FROM I-695 (BELTWAY) TAKE EXIT 31 TO HARFORD ROAD (ROUTE 147) SOUTH.
 AC7695'FROM THE HARFORD ROAD OVERPASS OVER I-695 GO SOUTH ON HARFORD ROAD FOR
 AC7695'0.7 MI (1.13 KM) TO TEXAS ROAD. TURN LEFT AND GO SOUTHEAST ON TEXAS
 AC7695'ROAD FOR 0.7 MI (1.13 KM) TO THE INTERSECTION WITH GLEN ROAD. CROSS
 AC7695'GLEN ROAD TO THE ENTRANCE DOUBLE ROCK PARK AND THE STATION ON THE
 AC7695'RIGHT. STATION IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7695'SET FLUSH WITH THE GROUND. IT IS 39.3 FT (11.98 M) SOUTHEAST OF THE
 AC7695'CENTERLINE OF GLEN ROAD, 3.1 FT (0.94 M) SOUTH OF THE SOUTHEAST CORNER
 AC7695'OF A WOOD PLANTER UNDER THE PARK SIGN, 6.82 FT (2.08 M) NORTHWEST OF
 AC7695'THE FACE OF CURB 12.45 FT (3.79 M) SOUTHWEST OF THE SOUTHERNMOST GATE
 AC7695'POST AT THE PARK ENTRANCE.
 AC7695
 AC7695                          STATION RECOVERY (1999)
 AC7695
 AC7695'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 1999
 AC7695'RECOVERED AS DESCRIBED.
 AC7695
 AC7695                          STATION RECOVERY (2003)
 AC7695
 AC7695'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (GAB)
 AC7695'RECOVERED IN GOOD CONDITION.
 AC7695
 AC7695                          STATION RECOVERY (2005)
 AC7695
 AC7695'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (KEC)
 AC7695'RECOVERED IN GOOD CONDITION.
 AC7695
 AC7695                          STATION RECOVERY (2006)
 AC7695
 AC7695'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (S)
 AC7695'RECOVERED BY SULTAN OF FSH ASSOC.
 AC7695
 AC7695                          STATION RECOVERY (2009)
 AC7695
 AC7695'RECOVERY NOTE BY JMT ENGINEERING 2009 (CJH)
 AC7695'RECOVERED.
 AC7695
 AC7695                          STATION RECOVERY (2011)
 AC7695
 AC7695'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (JFS)
 AC7695'RECOVERED AS DESCRIBED.
 AC7695
 AC7695                          STATION RECOVERY (2013)
 AC7695
 AC7695'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (WRA)
 AC7695'DESCRIPTION IS ADEQUATE
 AC7695
 AC7695                          STATION RECOVERY (2014)
 AC7695
 AC7695'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 AC7695'RECOVERED AS DESCRIBED, USED FOR STATIC GPS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6429 ***********************************************************************
 DG6429  DESIGNATION -  GIS 12
 DG6429  PID         -  DG6429
 DG6429  STATE/COUNTY-  MD/TALBOT
 DG6429  COUNTRY     -  US
 DG6429  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6429
 DG6429                         *CURRENT SURVEY CONTROL
 DG6429  ______________________________________________________________________
 DG6429* NAD 83(1986) POSITION- 38 47 38.10   (N) 076 13 07.07   (W)   HD_HELD1
 DG6429* NAVD 88 ORTHO HEIGHT -     2.052 (meters)        6.73  (feet) ADJUSTED
 DG6429  ______________________________________________________________________
 DG6429  GEOID HEIGHT    -        -34.326 (meters)                     GEOID18
 DG6429  DYNAMIC HEIGHT  -          2.051 (meters)        6.73  (feet) COMP
 DG6429  MODELED GRAVITY -    980,046.4   (mgal)                       NAVD 88
 DG6429
 DG6429  VERT ORDER      -  SECOND    CLASS I
 DG6429
 DG6429.The horizontal coordinates were determined by differentially corrected
 DG6429.hand held GPS observations or other comparable positioning techniques
 DG6429.and have an estimated accuracy of +/- 3 meters.
 DG6429
 DG6429.The orthometric height was determined by differential leveling and
 DG6429.adjusted by the NATIONAL GEODETIC SURVEY
 DG6429.in September 2004.
 DG6429
 DG6429.No vertical observational check was made to the station.
 DG6429
 DG6429.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6429.GEOID18 height accuracy estimate available here.
 DG6429
 DG6429.Click photographs - Photos may exist for this station.
 DG6429
 DG6429.The dynamic height is computed by dividing the NAVD 88
 DG6429.geopotential number by the normal gravity value computed on the
 DG6429.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6429.degrees latitude (g = 980.6199 gals.).
 DG6429
 DG6429.The modeled gravity was interpolated from observed gravity values.
 DG6429
 DG6429;                    North         East    Units  Estimated Accuracy
 DG6429;SPC MD       -   125,419.8     467,879.0     MT  (+/- 3 meters HH1 GPS) 
 DG6429
 DG6429_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9416994612(NAD 83)
 DG6429
 DG6429                          SUPERSEDED SURVEY CONTROL
 DG6429
 DG6429.No superseded survey control is available for this station.
 DG6429
 DG6429_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6429_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6429_STAMPING: NO GIS 12 1995
 DG6429_MARK LOGO: MD1370
 DG6429_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6429_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6429+STABILITY: SURFACE MOTION
 DG6429_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6429+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6429
 DG6429  HISTORY     - Date     Condition        Report By
 DG6429  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6429  HISTORY     - 19991213 GOOD             MDSHA
 DG6429  HISTORY     - 20060328 GOOD             USPSQD
 DG6429
 DG6429                          STATION DESCRIPTION
 DG6429
 DG6429'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6429'THE MARK IS LOCATED IN THE TOWN OF ST. MICHAELS.  TO REACH THE MARK
 DG6429'FROM THE POST OFFICE IN ST. MICHAELS, PROCEED NORTH ALONG MARYLAND
 DG6429'STATE HIGHWAY 33 FOR 0.65 MILES (1.05 KM) TO PERRY CABIN ROAD.  TURN
 DG6429'RIGHT AND PROCEED EAST ALONG PERRY CABIN ROAD FOR 0.45 MILES (0.72 KM)
 DG6429'TO THE ROADS END AND THE MARK ON THE LEFT.  IT IS 6.0 FEET (1.8 M)
 DG6429'NORTHWEST OF THE NORTHWEST EDGE OF MACADAM ROAD, 54.0 FEET (16.5 M)
 DG6429'NORTHWEST OF A FIRE HYDRANT, 97.0 FEET (29.6 M) NORTH OF METAL LIGHT
 DG6429'POLE NUMBER 29306-08930 AND 42.0 FEET (12.8 M) NORTHEAST OF THE
 DG6429'PROJECTED CENTER LINE OF THE NORTHEAST ENTRANCE TO TOWNHOUSES NUMBERED
 DG6429'354 TO 364.  IT IS A TOSM DISK SET IN THE TOP OF A 7 INCH (18 CM)
 DG6429'ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND AND LEVEL WITH THE
 DG6429'SURFACE OF THE ROAD.
 DG6429
 DG6429                          STATION RECOVERY (2006)
 DG6429
 DG6429'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6429'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4398 ***********************************************************************
 AI4398  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4398  DESIGNATION -  GIS 120
 AI4398  PID         -  AI4398
 AI4398  STATE/COUNTY-  MD/BALTIMORE
 AI4398  COUNTRY     -  US
 AI4398  USGS QUAD   -  NEW FREEDOM (2019)
 AI4398
 AI4398                         *CURRENT SURVEY CONTROL
 AI4398  ______________________________________________________________________
 AI4398* NAD 83(2011) POSITION- 39 39 34.57644(N) 076 39 08.57439(W)   ADJUSTED
 AI4398* NAD 83(2011) ELLIP HT-   144.395 (meters)        (06/27/12)   ADJUSTED
 AI4398* NAD 83(2011) EPOCH   -  2010.00
 AI4398* NAVD 88 ORTHO HEIGHT -   176.69  (meters)      579.7   (feet) GPS OBS
 AI4398  ______________________________________________________________________
 AI4398  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4398  GEOID HEIGHT    -        -32.326 (meters)                     GEOID99
 AI4398  GEOID HEIGHT    -        -32.305 (meters)                     GEOID18
 AI4398  NAD 83(2011) X  -  1,135,137.173 (meters)                     COMP
 AI4398  NAD 83(2011) Y  - -4,784,204.551 (meters)                     COMP
 AI4398  NAD 83(2011) Z  -  4,049,053.415 (meters)                     COMP
 AI4398  LAPLACE CORR    -         -1.76  (seconds)                    DEFLEC18
 AI4398
 AI4398  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4398  Standards:
 AI4398         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4398            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4398  -------------------------------------------------------------------
 AI4398  NETWORK    0.53   0.92           0.23   0.20   0.47     -0.02395175
 AI4398  -------------------------------------------------------------------
 AI4398  Click here for local accuracies and other accuracy information.
 AI4398
 AI4398.The horizontal coordinates were established by GPS observations
 AI4398.and adjusted by the National Geodetic Survey in June 2012.
 AI4398
 AI4398.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4398.been affixed to the stable North American tectonic plate. See 
 AI4398.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4398
 AI4398.The horizontal coordinates are valid at the epoch date displayed above
 AI4398.which is a decimal equivalence of Year/Month/Day.
 AI4398
 AI4398.The orthometric height was determined by GPS observations and a
 AI4398.high-resolution geoid model using precise GPS observation and
 AI4398.processing techniques.
 AI4398
 AI4398.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4398.GEOID18 height accuracy estimate available here.
 AI4398
 AI4398.Click photographs - Photos may exist for this station.
 AI4398
 AI4398.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4398
 AI4398.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4398
 AI4398.The ellipsoidal height was determined by GPS observations
 AI4398.and is referenced to NAD 83.
 AI4398
 AI4398. The following values were computed from the NAD 83(2011) position.
 AI4398
 AI4398;                    North         East     Units Scale Factor Converg.
 AI4398;SPC MD       -   221,292.512   429,832.554   MT  1.00004339   +0 13 05.4
 AI4398;SPC MD       -   726,023.85  1,410,208.97   sFT  1.00004339   +0 13 05.4
 AI4398;UTM  18      - 4,391,282.483   358,251.642   MT  0.99984737   -1 03 17.2
 AI4398
 AI4398!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4398!SPC MD       -   0.99997735  x   1.00004339  =   1.00002074
 AI4398!UTM  18      -   0.99997735  x   0.99984737  =   0.99982472
 AI4398
 AI4398_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5825191282(NAD 83)
 AI4398
 AI4398                          SUPERSEDED SURVEY CONTROL
 AI4398
 AI4398  NAD 83(2007)-  39 39 34.57663(N)    076 39 08.57508(W) AD(2002.00) 0
 AI4398  ELLIP H (02/10/07)  144.415  (m)                       GP(2002.00)    
 AI4398  ELLIP H (08/30/02)  144.420  (m)                       GP(       ) 4 2
 AI4398  NAD 83(1991)-  39 39 34.57696(N)    076 39 08.57499(W) AD(       ) 1
 AI4398  ELLIP H (03/31/00)  144.345  (m)                       GP(       ) 3 1
 AI4398
 AI4398.Superseded values are not recommended for survey control.
 AI4398
 AI4398.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4398.See file dsdata.pdf to determine how the superseded data were derived.
 AI4398
 AI4398_MARKER: DD = SURVEY DISK
 AI4398_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4398_STAMPING: GIS 120
 AI4398_MARK LOGO: MD-005
 AI4398_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4398_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4398+STABILITY: SURFACE MOTION
 AI4398_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4398+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2014
 AI4398
 AI4398  HISTORY     - Date     Condition        Report By
 AI4398  HISTORY     - 1997     MONUMENTED       MD-005
 AI4398  HISTORY     - 20031020 GOOD             DMW
 AI4398  HISTORY     - 20070126 GOOD             JMTMD
 AI4398  HISTORY     - 20070324 GOOD             GEOCAC
 AI4398  HISTORY     - 20090520 GOOD             JMTMD
 AI4398  HISTORY     - 20140328 GOOD             GPSSS
 AI4398
 AI4398                          STATION DESCRIPTION
 AI4398
 AI4398'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4398'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4398'LOCATED ABOUT 3.3 MILES (5.3 KM) NORTH OF HEREFORD AND 9.8 MILES (15.8
 AI4398'KM) EAST OF HAMPSTEAD.  TO REACH THE STATION FROM THE ROUTE 45 (YORK
 AI4398'ROAD) OVERPASS OF I83 AT EXIT 33, GO NORTH ON ROUTE 45 FOR 0.25 MILES
 AI4398'(0.40 KM) TO AN ABANDONNED PAVED LANE AND THE STATION ON THE RIGHT.
 AI4398'STATION MARK IS SET IN THE TOP OF A 10 INCH CONCRETE MONUMENT FLUSH
 AI4398'WITH THE GROUND.  IT IS 16.40 FEET (5.00 M) SOUTH FROM THE FACE OF AN
 AI4398'UNNUMBERED UTILITY POLE, 29 FEET (8.8 M) SOUTHWEST FROM THE CENTERLINE
 AI4398'OF THE PAVED LANE, AND 84.50 FEET (25.76 M) EAST FROM THE CENTERLINE
 AI4398'OF THE CONCRETE MEDIAN STRIP OF ROUTE 45.
 AI4398
 AI4398                          STATION RECOVERY (2003)
 AI4398
 AI4398'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (JMS)
 AI4398'THE PREVIOUSLY-DESCRIBED CONCRETE MEDIAN IN ROUTE 45 NO LONGER EXISTS
 AI4398'AND THEREFORE CAN NOT BE USED AS A RECOVERY REFERENCE.
 AI4398
 AI4398                          STATION RECOVERY (2007)
 AI4398
 AI4398'RECOVERY NOTE BY JMT ENGINEERING 2007 (CJH)
 AI4398'RECOVERED
 AI4398
 AI4398                          STATION RECOVERY (2007)
 AI4398
 AI4398'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 AI4398'NOTE -  ABANDONED PAVED LANE HAS BEEN REMOVED AND AREA SEEDED WITH
 AI4398'GRASS.
 AI4398
 AI4398                          STATION RECOVERY (2009)
 AI4398
 AI4398'RECOVERY NOTE BY JMT ENGINEERING 2009 (JAF)
 AI4398'EASY ACCESS OF I-83, EXIT 33 (GRAVEL LOT EAST SIDE YORK ROAD)
 AI4398'RTK CHECK WITH AJ7978 BELL (N.02 E.02 EL.+0.15)
 AI4398
 AI4398                          STATION RECOVERY (2014)
 AI4398
 AI4398'RECOVERY NOTE BY GPS SALES AND SERVICES 2014 (SS)
 AI4398'RECOVERED BY STEVE SNYDER OF SNYDER SURVEYING.  MONUMENT IS AT THE
 AI4398'BOTTOM LEDGE OF 6FT HIGH CHAIN LINK SHA SERVICE YARD FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4399 ***********************************************************************
 AI4399  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4399  DESIGNATION -  GIS 121
 AI4399  PID         -  AI4399
 AI4399  STATE/COUNTY-  MD/BALTIMORE
 AI4399  COUNTRY     -  US
 AI4399  USGS QUAD   -  HEREFORD (2016)
 AI4399
 AI4399                         *CURRENT SURVEY CONTROL
 AI4399  ______________________________________________________________________
 AI4399* NAD 83(2011) POSITION- 39 37 19.54272(N) 076 37 45.07454(W)   ADJUSTED
 AI4399* NAD 83(2011) ELLIP HT-    72.391 (meters)        (06/27/12)   ADJUSTED
 AI4399* NAD 83(2011) EPOCH   -  2010.00
 AI4399* NAVD 88 ORTHO HEIGHT -   104.72  (meters)      343.6   (feet) GPS OBS
 AI4399  ______________________________________________________________________
 AI4399  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4399  GEOID HEIGHT    -        -32.345 (meters)                     GEOID99
 AI4399  GEOID HEIGHT    -        -32.325 (meters)                     GEOID18
 AI4399  NAD 83(2011) X  -  1,137,675.415 (meters)                     COMP
 AI4399  NAD 83(2011) Y  - -4,786,275.606 (meters)                     COMP
 AI4399  NAD 83(2011) Z  -  4,045,800.453 (meters)                     COMP
 AI4399  LAPLACE CORR    -         -2.30  (seconds)                    DEFLEC18
 AI4399
 AI4399  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4399  Standards:
 AI4399         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4399            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4399  -------------------------------------------------------------------
 AI4399  NETWORK    0.46   0.86           0.20   0.17   0.44     -0.00861517
 AI4399  -------------------------------------------------------------------
 AI4399  Click here for local accuracies and other accuracy information.
 AI4399
 AI4399.The horizontal coordinates were established by GPS observations
 AI4399.and adjusted by the National Geodetic Survey in June 2012.
 AI4399
 AI4399.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4399.been affixed to the stable North American tectonic plate. See 
 AI4399.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4399
 AI4399.The horizontal coordinates are valid at the epoch date displayed above
 AI4399.which is a decimal equivalence of Year/Month/Day.
 AI4399
 AI4399.The orthometric height was determined by GPS observations and a
 AI4399.high-resolution geoid model using precise GPS observation and
 AI4399.processing techniques.
 AI4399
 AI4399.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4399.GEOID18 height accuracy estimate available here.
 AI4399
 AI4399.Click photographs - Photos may exist for this station.
 AI4399
 AI4399.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4399
 AI4399.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4399
 AI4399.The ellipsoidal height was determined by GPS observations
 AI4399.and is referenced to NAD 83.
 AI4399
 AI4399. The following values were computed from the NAD 83(2011) position.
 AI4399
 AI4399;                    North         East     Units Scale Factor Converg.
 AI4399;SPC MD       -   217,135.636   431,840.001   MT  1.00003464   +0 13 57.8
 AI4399;SPC MD       -   712,385.83  1,416,795.07   sFT  1.00003464   +0 13 57.8
 AI4399;UTM  18      - 4,387,082.875   360,165.915   MT  0.99984074   -1 02 20.9
 AI4399
 AI4399!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4399!SPC MD       -   0.99998864  x   1.00003464  =   1.00002328
 AI4399!UTM  18      -   0.99998864  x   0.99984074  =   0.99982938
 AI4399
 AI4399_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6016587082(NAD 83)
 AI4399
 AI4399                          SUPERSEDED SURVEY CONTROL
 AI4399
 AI4399  NAD 83(2007)-  39 37 19.54290(N)    076 37 45.07519(W) AD(2002.00) 0
 AI4399  ELLIP H (02/10/07)   72.411  (m)                       GP(2002.00)    
 AI4399  ELLIP H (08/30/02)   72.416  (m)                       GP(       ) 4 2
 AI4399  NAD 83(1991)-  39 37 19.54328(N)    076 37 45.07499(W) AD(       ) 1
 AI4399  ELLIP H (03/31/00)   72.346  (m)                       GP(       ) 3 1
 AI4399
 AI4399.Superseded values are not recommended for survey control.
 AI4399
 AI4399.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4399.See file dsdata.pdf to determine how the superseded data were derived.
 AI4399
 AI4399_MARKER: DD = SURVEY DISK
 AI4399_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4399_STAMPING: G.I.S. 121
 AI4399_MARK LOGO: MD-005
 AI4399_PROJECTION: FLUSH
 AI4399_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4399_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4399+STABILITY: SURFACE MOTION
 AI4399_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4399+SATELLITE: SATELLITE OBSERVATIONS - September 11, 2024
 AI4399
 AI4399  HISTORY     - Date     Condition        Report By
 AI4399  HISTORY     - 1997     MONUMENTED       MD-005
 AI4399  HISTORY     - 20140328 GOOD             GPSSS
 AI4399  HISTORY     - 20170203 GOOD             GPSSS
 AI4399  HISTORY     - 20240911 GOOD             MDSHA
 AI4399
 AI4399                          STATION DESCRIPTION
 AI4399
 AI4399'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4399'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH).
 AI4399'
 AI4399'THE STATION IS LOCATED ABOUT 1.52 MILES (2.45 KM) NORTHEAST OF
 AI4399'HEREFORD AND 4.0 MILES (6.4 KM) NORTHWEST OF JACKSONVILLE.
 AI4399'
 AI4399'TO REACH THE STATION FROM THE ROUTE 137 (MOUNT CARMEL ROAD) OVERPASS
 AI4399'OF I83 AT EXIT 27, GO EAST ON ROUTE 137 FOR 0.55 MILES (0.89 KM) TO
 AI4399'THE INTERSECTION WITH ROUTE 45 (YORK ROAD).  TURN LEFT AND GO NORTH ON
 AI4399'ROUTE 45 FOR 2.4 MILES (3.9 KM) TO THE INTERSECTION WITH WISEBURG
 AI4399'ROAD.  TURN RIGHT AND GO EAST ON WISEBURG ROAD FOR 1.4 MILES (2.3 KM)
 AI4399'TO THE INTERSECTION WITH GRAYSTONE ROAD.  BEAR RIGHT AND CONTINUE
 AI4399'SOUTHEAST ON WISEBURG ROAD FOR 0.4 MILES (0.6 KM) TO THE STATION ON
 AI4399'THE RIGHT.
 AI4399'
 AI4399'THE STATION IS SET IN THE TOP OF A 10 INCH CONCRETE MONUMENT FLUSH
 AI4399'WITH THE GROUND.  IT IS 46.10 FEET (14.05 M) SOUTHWEST FROM THE FACE
 AI4399'OF UTILITY POLE NUMBER 54863, 31.40 FEET (9.57 M) FROM THE EAST CORNER
 AI4399'OF A CONCRETE CURB OF A PAVED PARKING LOT, AND 21.9 FEET (6.7 M)
 AI4399'SOUTHWEST FROM THE CENTERLINE OF WISEBURG ROAD.
 AI4399
 AI4399                          STATION RECOVERY (2014)
 AI4399
 AI4399'RECOVERY NOTE BY GPS SALES AND SERVICES 2014 (SS)
 AI4399'RECOVERED BY STEVE SNYDER OF SNYDER SURVEYING.  MONUMENT IS 4.5FT FROM
 AI4399'WITNESS POST.
 AI4399
 AI4399                          STATION RECOVERY (2017)
 AI4399
 AI4399'RECOVERY NOTE BY GPS SALES AND SERVICES 2017 (SS)
 AI4399'RECOVERED BY STEVE SNYDER OF SNYDER SURVEYING.
 AI4399
 AI4399                          STATION RECOVERY (2024)
 AI4399
 AI4399'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 AI4399'THE MARK IS 148.1 FT (45.1 M) NORTHWEST OF A UTILITY POLE NUMBERED
 AI4399'BELOW THE GROUND AND E 54862, 113.1 FT (34.5 M) SOUTH OF A UTILITY
 AI4399'POLE NUMBERED G AND E CO 54864, 25.6 FT (7.8 M) EAST OF SOUTH END OF
 AI4399'CURB, 22.8 FT (6.9 M) WEST-SOUTHWEST OF THE CENTERLINE OF WISEBURG
 AI4399'ROAD SET IN THE TOP OF A 10-IN (25 CM) ROUND CONCRETE POST AND ABOUT
 AI4399'LEVEL WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4400 ***********************************************************************
 AI4400  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4400  DESIGNATION -  GIS 122
 AI4400  PID         -  AI4400
 AI4400  STATE/COUNTY-  MD/BALTIMORE
 AI4400  COUNTRY     -  US
 AI4400  USGS QUAD   -  HEREFORD (2016)
 AI4400
 AI4400                         *CURRENT SURVEY CONTROL
 AI4400  ______________________________________________________________________
 AI4400* NAD 83(2011) POSITION- 39 35 33.03465(N) 076 40 28.67883(W)   ADJUSTED
 AI4400* NAD 83(2011) ELLIP HT-   155.922 (meters)        (06/27/12)   ADJUSTED
 AI4400* NAD 83(2011) EPOCH   -  2010.00
 AI4400* NAVD 88 ORTHO HEIGHT -   188.19  (meters)      617.4   (feet) GPS OBS
 AI4400  ______________________________________________________________________
 AI4400  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4400  GEOID HEIGHT    -        -32.284 (meters)                     GEOID99
 AI4400  GEOID HEIGHT    -        -32.266 (meters)                     GEOID18
 AI4400  NAD 83(2011) X  -  1,134,376.197 (meters)                     COMP
 AI4400  NAD 83(2011) Y  - -4,789,276.889 (meters)                     COMP
 AI4400  NAD 83(2011) Z  -  4,043,322.945 (meters)                     COMP
 AI4400  LAPLACE CORR    -         -2.51  (seconds)                    DEFLEC18
 AI4400
 AI4400  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4400  Standards:
 AI4400         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4400            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4400  -------------------------------------------------------------------
 AI4400  NETWORK    0.59   0.96           0.26   0.22   0.49     -0.01717259
 AI4400  -------------------------------------------------------------------
 AI4400  Click here for local accuracies and other accuracy information.
 AI4400
 AI4400.The horizontal coordinates were established by GPS observations
 AI4400.and adjusted by the National Geodetic Survey in June 2012.
 AI4400
 AI4400.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4400.been affixed to the stable North American tectonic plate. See 
 AI4400.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4400
 AI4400.The horizontal coordinates are valid at the epoch date displayed above
 AI4400.which is a decimal equivalence of Year/Month/Day.
 AI4400
 AI4400.The orthometric height was determined by GPS observations and a
 AI4400.high-resolution geoid model using precise GPS observation and
 AI4400.processing techniques.
 AI4400
 AI4400.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4400.GEOID18 height accuracy estimate available here.
 AI4400
 AI4400.Click photographs - Photos may exist for this station.
 AI4400
 AI4400.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4400
 AI4400.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4400
 AI4400.The ellipsoidal height was determined by GPS observations
 AI4400.and is referenced to NAD 83.
 AI4400
 AI4400. The following values were computed from the NAD 83(2011) position.
 AI4400
 AI4400;                    North         East     Units Scale Factor Converg.
 AI4400;SPC MD       -   213,835.874   427,949.516   MT  1.00002804   +0 12 15.2
 AI4400;SPC MD       -   701,559.86  1,404,031.04   sFT  1.00002804   +0 12 15.2
 AI4400;UTM  18      - 4,383,870.864   356,203.878   MT  0.99985458   -1 04 02.9
 AI4400
 AI4400!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4400!SPC MD       -   0.99997554  x   1.00002804  =   1.00000358
 AI4400!UTM  18      -   0.99997554  x   0.99985458  =   0.99983012
 AI4400
 AI4400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5620383870(NAD 83)
 AI4400
 AI4400                          SUPERSEDED SURVEY CONTROL
 AI4400
 AI4400  NAD 83(2007)-  39 35 33.03483(N)    076 40 28.67949(W) AD(2002.00) 0
 AI4400  ELLIP H (02/10/07)  155.942  (m)                       GP(2002.00)    
 AI4400  ELLIP H (08/30/02)  155.947  (m)                       GP(       ) 4 2
 AI4400  NAD 83(1991)-  39 35 33.03518(N)    076 40 28.67943(W) AD(       ) 1
 AI4400  ELLIP H (03/31/00)  155.885  (m)                       GP(       ) 3 1
 AI4400
 AI4400.Superseded values are not recommended for survey control.
 AI4400
 AI4400.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4400.See file dsdata.pdf to determine how the superseded data were derived.
 AI4400
 AI4400_MARKER: DD = SURVEY DISK
 AI4400_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4400_STAMPING: GIS 122
 AI4400_MARK LOGO: MD-005
 AI4400_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4400_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4400+STABILITY: SURFACE MOTION
 AI4400_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4400+SATELLITE: SATELLITE OBSERVATIONS - September 17, 2012
 AI4400
 AI4400  HISTORY     - Date     Condition        Report By
 AI4400  HISTORY     - 1997     MONUMENTED       MD-005
 AI4400  HISTORY     - 20120917 GOOD             GPSSS
 AI4400
 AI4400                          STATION DESCRIPTION
 AI4400
 AI4400'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4400'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4400'LOCATED ABOUT 0.6 MILES (1.0 KM) WEST OF HEREFORD.  TO REACH THE
 AI4400'STATION FROM THE ROUTE 137 (MOUNT CARMEL ROAD) OVERPASS OF I83 AT EXIT
 AI4400'27, GO WEST ON ROUTE 137 FOR 0.1 MILES (0.2 KM) TO THE INTERSECTION
 AI4400'WITH THE ENTRANCE TO A PARK AND RIDE LOT AND THE STATION ON THE RIGHT.
 AI4400'STATION MARK IS SET IN THE TOP OF A 10 INCH CONCRETE MONUMENT FLUSH
 AI4400'WITH THE GROUND.  IT IS ON THE WEST SIDE OF THE ENTRANCE ROAD ACROSS
 AI4400'FROM THE ENTRANCE RAMP TO I83 FROM EAST BOUND ROUTE 137.  IT IS 20.3
 AI4400'FEET (6.2 M) SOUTHWEST FROM THE CENTER OF AN ELECTRIC MANHOLE COVER,
 AI4400'31.3 FEET (9.5 M) WEST FROM THE CENTERLINE OF THE ENTRANCE ROAD, AND
 AI4400'52.6 FEET (16.0 M) NORTH FROM THE CENTERLINE OF ROUTE 137.
 AI4400
 AI4400                          STATION RECOVERY (2012)
 AI4400
 AI4400'RECOVERY NOTE BY GPS SALES AND SERVICES 2012 (FP)
 AI4400'RECOVERED BY FARON PYLES, PLS OF NORTHERN BAY SURVEYS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4401 ***********************************************************************
 AI4401  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4401  DESIGNATION -  GIS 123
 AI4401  PID         -  AI4401
 AI4401  STATE/COUNTY-  MD/BALTIMORE
 AI4401  COUNTRY     -  US
 AI4401  USGS QUAD   -  PHOENIX (2016)
 AI4401
 AI4401                         *CURRENT SURVEY CONTROL
 AI4401  ______________________________________________________________________
 AI4401* NAD 83(2011) POSITION- 39 36 21.43616(N) 076 34 40.24566(W)   ADJUSTED
 AI4401* NAD 83(2011) ELLIP HT-   173.338 (meters)        (06/27/12)   ADJUSTED
 AI4401* NAD 83(2011) EPOCH   -  2010.00
 AI4401* NAVD 88 ORTHO HEIGHT -   205.73  (meters)      675.0   (feet) GPS OBS
 AI4401  ______________________________________________________________________
 AI4401  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4401  GEOID HEIGHT    -        -32.399 (meters)                     GEOID99
 AI4401  GEOID HEIGHT    -        -32.384 (meters)                     GEOID18
 AI4401  NAD 83(2011) X  -  1,142,247.114 (meters)                     COMP
 AI4401  NAD 83(2011) Y  - -4,786,441.333 (meters)                     COMP
 AI4401  NAD 83(2011) Z  -  4,044,484.266 (meters)                     COMP
 AI4401  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 AI4401
 AI4401  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4401  Standards:
 AI4401         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4401            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4401  -------------------------------------------------------------------
 AI4401  NETWORK    0.61   0.98           0.27   0.22   0.50     -0.04995183
 AI4401  -------------------------------------------------------------------
 AI4401  Click here for local accuracies and other accuracy information.
 AI4401
 AI4401.The horizontal coordinates were established by GPS observations
 AI4401.and adjusted by the National Geodetic Survey in June 2012.
 AI4401
 AI4401.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4401.been affixed to the stable North American tectonic plate. See 
 AI4401.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4401
 AI4401.The horizontal coordinates are valid at the epoch date displayed above
 AI4401.which is a decimal equivalence of Year/Month/Day.
 AI4401
 AI4401.The orthometric height was determined by GPS observations and a
 AI4401.high-resolution geoid model using precise GPS observation and
 AI4401.processing techniques.
 AI4401
 AI4401.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4401.GEOID18 height accuracy estimate available here.
 AI4401
 AI4401.Click photographs - Photos may exist for this station.
 AI4401
 AI4401.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4401
 AI4401.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4401
 AI4401.The ellipsoidal height was determined by GPS observations
 AI4401.and is referenced to NAD 83.
 AI4401
 AI4401. The following values were computed from the NAD 83(2011) position.
 AI4401
 AI4401;                    North         East     Units Scale Factor Converg.
 AI4401;SPC MD       -   215,362.685   436,256.709   MT  1.00003100   +0 15 53.8
 AI4401;SPC MD       -   706,569.08  1,431,285.55   sFT  1.00003100   +0 15 53.8
 AI4401;UTM  18      - 4,385,212.731   364,541.322   MT  0.99982591   -1 00 21.7
 AI4401
 AI4401!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4401!SPC MD       -   0.99997281  x   1.00003100  =   1.00000381
 AI4401!UTM  18      -   0.99997281  x   0.99982591  =   0.99979872
 AI4401
 AI4401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6454185212(NAD 83)
 AI4401
 AI4401                          SUPERSEDED SURVEY CONTROL
 AI4401
 AI4401  NAD 83(2007)-  39 36 21.43631(N)    076 34 40.24629(W) AD(2002.00) 0
 AI4401  ELLIP H (02/10/07)  173.358  (m)                       GP(2002.00)    
 AI4401  ELLIP H (08/30/02)  173.361  (m)                       GP(       ) 4 2
 AI4401  NAD 83(1991)-  39 36 21.43673(N)    076 34 40.24598(W) AD(       ) 1
 AI4401  ELLIP H (03/31/00)  173.290  (m)                       GP(       ) 3 1
 AI4401
 AI4401.Superseded values are not recommended for survey control.
 AI4401
 AI4401.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4401.See file dsdata.pdf to determine how the superseded data were derived.
 AI4401
 AI4401_MARKER: DD = SURVEY DISK
 AI4401_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4401_STAMPING: GIS 123
 AI4401_MARK LOGO: MD-005
 AI4401_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4401_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4401+STABILITY: SURFACE MOTION
 AI4401_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4401+SATELLITE: SATELLITE OBSERVATIONS - 1997
 AI4401
 AI4401  HISTORY     - Date     Condition        Report By
 AI4401  HISTORY     - 1997     MONUMENTED       MD-005
 AI4401
 AI4401                          STATION DESCRIPTION
 AI4401
 AI4401'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4401'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4401'LOCATED ABOUT 4.7 MILES (7.6 KM) EAST NORTHEAST OF HEREFORD AND 6.7
 AI4401'MILES (10.8 KM) NORTH NORTHWEST OF JACKSONVILLE.  TO REACH THE STATION
 AI4401'FROM THE ROUTE 137 (MOUNT CARMEL ROAD) OVERPASS OF I83 AT EXIT 27, GO
 AI4401'EAST ON ROUTE 137 FOR 0.5 MILES (0.8 KM) TO THE INTERSECTION WITH
 AI4401'ROUTE 45 (YORK ROAD) .  TURN RIGHT AND GO SOUTH ON ROUTE 45 FOR 0.1
 AI4401'MILES (0.2 KM) TO THE INTERSECTION WITH ROUTE 138 (MONKTON ROAD) .TURN
 AI4401'LEFT AND GO EAST ON ROUTE 138 FOR 2.9 MILES (4.7 KM) TO THE BRIDGE
 AI4401'OVER THE GUNPOWDER FALLS.  CONTINUE EAST ON ROUTE 138 FOR 0.4 MILES
 AI4401'(0.6 KM) TO A FORK.  TAKE THE LEFT FORK WEST NORTHWEST ON ROUTE 138
 AI4401'(SHEPPERD ROAD) FOR 2.8 MILES (4.5 KM) TO A TEE INTERSECTION WITH
 AI4401'TROYER ROAD.  TURN LEFT AND GO NORTHWEST ON ROUTE 138 (TROYER ROAD)
 AI4401'FOR 1.0 MILES (1.6 KM) TO THE INTERSECTION WITH MCCOMAS ROAD.
 AI4401'CONTINUE NORTH ON ROUTE 138 FOR 170 FEET (51.8 M) TO THE STATION ON
 AI4401'THE LEFT.STATION MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE
 AI4401'MONUMENT FLUSH WITH THE GROUND.IT IS 8.50 FEET (2.59 M) SOUTH FROM A 4
 AI4401'INCH WOOD MAILBOX POST, 79 FEET (24.1 M) SOUTHWEST FROM A WELL CAP FOR
 AI4401'HOUSE NUMBER 17609,18 FEET WEST FROM THE CENTERLINE OF TROYER ROAD,
 AI4401'AND 166 FEET (50.6 M) NORTH FROM THE CENTERLINE OF MCCOMAS ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4402 ***********************************************************************
 AI4402  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4402  DESIGNATION -  GIS 124
 AI4402  PID         -  AI4402
 AI4402  STATE/COUNTY-  MD/BALTIMORE
 AI4402  COUNTRY     -  US
 AI4402  USGS QUAD   -  PHOENIX (2016)
 AI4402
 AI4402                         *CURRENT SURVEY CONTROL
 AI4402  ______________________________________________________________________
 AI4402* NAD 83(2011) POSITION- 39 36 34.31266(N) 076 36 00.45562(W)   ADJUSTED
 AI4402* NAD 83(2011) ELLIP HT-   158.839 (meters)        (06/27/12)   ADJUSTED
 AI4402* NAD 83(2011) EPOCH   -  2010.00
 AI4402* NAVD 88 ORTHO HEIGHT -   191.20  (meters)      627.3   (feet) GPS OBS
 AI4402  ______________________________________________________________________
 AI4402  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4402  GEOID HEIGHT    -        -32.375 (meters)                     GEOID99
 AI4402  GEOID HEIGHT    -        -32.358 (meters)                     GEOID18
 AI4402  NAD 83(2011) X  -  1,140,324.467 (meters)                     COMP
 AI4402  NAD 83(2011) Y  - -4,786,627.999 (meters)                     COMP
 AI4402  NAD 83(2011) Z  -  4,044,780.985 (meters)                     COMP
 AI4402  LAPLACE CORR    -         -1.95  (seconds)                    DEFLEC18
 AI4402
 AI4402  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4402  Standards:
 AI4402         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4402            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4402  -------------------------------------------------------------------
 AI4402  NETWORK    0.61   0.98           0.27   0.23   0.50     -0.05040854
 AI4402  -------------------------------------------------------------------
 AI4402  Click here for local accuracies and other accuracy information.
 AI4402
 AI4402.The horizontal coordinates were established by GPS observations
 AI4402.and adjusted by the National Geodetic Survey in June 2012.
 AI4402
 AI4402.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4402.been affixed to the stable North American tectonic plate. See 
 AI4402.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4402
 AI4402.The horizontal coordinates are valid at the epoch date displayed above
 AI4402.which is a decimal equivalence of Year/Month/Day.
 AI4402
 AI4402.The orthometric height was determined by GPS observations and a
 AI4402.high-resolution geoid model using precise GPS observation and
 AI4402.processing techniques.
 AI4402
 AI4402.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4402.GEOID18 height accuracy estimate available here.
 AI4402
 AI4402.Click photographs - Photos may exist for this station.
 AI4402
 AI4402.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4402
 AI4402.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4402
 AI4402.The ellipsoidal height was determined by GPS observations
 AI4402.and is referenced to NAD 83.
 AI4402
 AI4402. The following values were computed from the NAD 83(2011) position.
 AI4402
 AI4402;                    North         East     Units Scale Factor Converg.
 AI4402;SPC MD       -   215,751.200   434,341.416   MT  1.00003180   +0 15 03.5
 AI4402;SPC MD       -   707,843.73  1,425,001.80   sFT  1.00003180   +0 15 03.5
 AI4402;UTM  18      - 4,385,643.553   362,635.505   MT  0.99983231   -1 01 13.2
 AI4402
 AI4402!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4402!SPC MD       -   0.99997508  x   1.00003180  =   1.00000688
 AI4402!UTM  18      -   0.99997508  x   0.99983231  =   0.99980740
 AI4402
 AI4402_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6263585643(NAD 83)
 AI4402
 AI4402                          SUPERSEDED SURVEY CONTROL
 AI4402
 AI4402  NAD 83(2007)-  39 36 34.31284(N)    076 36 00.45627(W) AD(2002.00) 0
 AI4402  ELLIP H (02/10/07)  158.859  (m)                       GP(2002.00)    
 AI4402  ELLIP H (08/30/02)  158.863  (m)                       GP(       ) 4 2
 AI4402  NAD 83(1991)-  39 36 34.31326(N)    076 36 00.45588(W) AD(       ) 1
 AI4402  ELLIP H (03/31/00)  158.790  (m)                       GP(       ) 3 1
 AI4402
 AI4402.Superseded values are not recommended for survey control.
 AI4402
 AI4402.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4402.See file dsdata.pdf to determine how the superseded data were derived.
 AI4402
 AI4402_MARKER: DD = SURVEY DISK
 AI4402_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4402_STAMPING: GIS 124
 AI4402_MARK LOGO: MD-005
 AI4402_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4402_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4402+STABILITY: SURFACE MOTION
 AI4402_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4402+SATELLITE: SATELLITE OBSERVATIONS - 1997
 AI4402
 AI4402  HISTORY     - Date     Condition        Report By
 AI4402  HISTORY     - 1997     MONUMENTED       MD-005
 AI4402
 AI4402                          STATION DESCRIPTION
 AI4402
 AI4402'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4402'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4402'LOCATED ABOUT 3.7 MILES (6.0 KM) EAST NORTHEAST OF HEREFORD AND 6.5
 AI4402'MILES (10.5 KM) NORTH NORTHWEST OF JACKSONVILLE.  TO REACH THE STATION
 AI4402'FROM THE ROUTE 137 (MOUNT CARMEL ROAD) OVERPASS OF I83 AT EXIT 27, GO
 AI4402'EAST ON ROUTE 137 FOR 0.5 MILES (0.8 KM) TO THE INTERSECTION WITH
 AI4402'ROUTE 45 (YORK ROAD) .  TURN RIGHT AND GO SOUTH ON ROUTE 45 FOR 0.1
 AI4402'MILES (0.2 KM) TO THE INTERSECTION WITH ROUTE 138 (MONKTON ROAD) .TURN
 AI4402'LEFT AND GO EAST ON ROUTE 138 FOR 2.9 MILES (4.7 KM) TO THE BRIDGE
 AI4402'OVER THE GUNPOWDER FALLS.  CONTINUE EAST ON ROUTE 138 FOR 0.4 MILES
 AI4402'(0.6 KM) TO A FORK.  TAKE THE LEFT FORK WEST NORTHWEST ON ROUTE 138
 AI4402'(SHEPPERD ROAD) FOR 2.8 MILES (4.5 KM) TO A TEE INTERSECTION WITH
 AI4402'TROYER ROAD.  TURN LEFT AND GO NORTHWEST ON ROUTE 138 (TROYER ROAD)
 AI4402'FOR 1.0 MILES (1.6 KM) TO THE INTERSECTION WITH MCCOMAS ROAD.  TURN
 AI4402'LEFT AND GO NORTHWEST 0.7 MILES (1.1 KM) TO THE INTERSECTION WITH
 AI4402'WILSON ROAD.  TURN LEFT AND GO WEST ON WILSON ROAD FOR 0.7 MILES (1.1
 AI4402'KM) TO THE STATION ON THE LEFT.STATION MARK IS SET IN THE TOP OF A 10
 AI4402'INCH DIAMETER CONCRETE MONUMENT.  IT IS IN A GRASS STRIP BETWEEN THE
 AI4402'PAVED ROAD AND A FENCED HORSE PASTURE.  IT IS 15 FEET (4.6 M)
 AI4402'NORTHEAST FROM A 6 INCH SQUARE WOOD FENCE POST, 5.50 FEET (1.68 M)
 AI4402'NORTHWEST FROM A 4 INCH DIAMETER CIRCULAR WOOD FENCE POST, AND 15 FEET
 AI4402'(4.6 M) SOUTH FROM THE CENTERLINE OF WILSON ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4403 ***********************************************************************
 AI4403  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4403  DESIGNATION -  GIS 125
 AI4403  PID         -  AI4403
 AI4403  STATE/COUNTY-  MD/BALTIMORE
 AI4403  COUNTRY     -  US
 AI4403  USGS QUAD   -  HEREFORD (2016)
 AI4403
 AI4403                         *CURRENT SURVEY CONTROL
 AI4403  ______________________________________________________________________
 AI4403* NAD 83(2011) POSITION- 39 32 44.54873(N) 076 39 40.12300(W)   ADJUSTED
 AI4403* NAD 83(2011) ELLIP HT-    75.785 (meters)        (06/27/12)   ADJUSTED
 AI4403* NAD 83(2011) EPOCH   -  2010.00
 AI4403* NAVD 88 ORTHO HEIGHT -   108.10  (meters)      354.7   (feet) GPS OBS
 AI4403  ______________________________________________________________________
 AI4403  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4403  GEOID HEIGHT    -        -32.326 (meters)                     GEOID99
 AI4403  GEOID HEIGHT    -        -32.315 (meters)                     GEOID18
 AI4403  NAD 83(2011) X  -  1,136,253.006 (meters)                     COMP
 AI4403  NAD 83(2011) Y  - -4,792,170.407 (meters)                     COMP
 AI4403  NAD 83(2011) Z  -  4,039,266.285 (meters)                     COMP
 AI4403  LAPLACE CORR    -         -3.05  (seconds)                    DEFLEC18
 AI4403
 AI4403  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4403  Standards:
 AI4403         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4403            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4403  -------------------------------------------------------------------
 AI4403  NETWORK    0.64   1.00           0.28   0.24   0.51     -0.03632520
 AI4403  -------------------------------------------------------------------
 AI4403  Click here for local accuracies and other accuracy information.
 AI4403
 AI4403.The horizontal coordinates were established by GPS observations
 AI4403.and adjusted by the National Geodetic Survey in June 2012.
 AI4403
 AI4403.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4403.been affixed to the stable North American tectonic plate. See 
 AI4403.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4403
 AI4403.The horizontal coordinates are valid at the epoch date displayed above
 AI4403.which is a decimal equivalence of Year/Month/Day.
 AI4403
 AI4403.The orthometric height was determined by GPS observations and a
 AI4403.high-resolution geoid model using precise GPS observation and
 AI4403.processing techniques.
 AI4403
 AI4403.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4403.GEOID18 height accuracy estimate available here.
 AI4403
 AI4403.Click photographs - Photos may exist for this station.
 AI4403
 AI4403.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4403
 AI4403.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4403
 AI4403.The ellipsoidal height was determined by GPS observations
 AI4403.and is referenced to NAD 83.
 AI4403
 AI4403. The following values were computed from the NAD 83(2011) position.
 AI4403
 AI4403;                    North         East     Units Scale Factor Converg.
 AI4403;SPC MD       -   208,643.789   429,127.415   MT  1.00001814   +0 12 45.6
 AI4403;SPC MD       -   684,525.50  1,407,895.53   sFT  1.00001814   +0 12 45.6
 AI4403;UTM  18      - 4,378,654.816   357,266.131   MT  0.99985083   -1 03 28.1
 AI4403
 AI4403!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4403!SPC MD       -   0.99998811  x   1.00001814  =   1.00000625
 AI4403!UTM  18      -   0.99998811  x   0.99985083  =   0.99983894
 AI4403
 AI4403_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5726678654(NAD 83)
 AI4403
 AI4403                          SUPERSEDED SURVEY CONTROL
 AI4403
 AI4403  NAD 83(2007)-  39 32 44.54891(N)    076 39 40.12367(W) AD(2002.00) 0
 AI4403  ELLIP H (02/10/07)   75.805  (m)                       GP(2002.00)    
 AI4403  ELLIP H (08/30/02)   75.811  (m)                       GP(       ) 4 2
 AI4403  NAD 83(1991)-  39 32 44.54917(N)    076 39 40.12375(W) AD(       ) 1
 AI4403  ELLIP H (03/31/00)   75.765  (m)                       GP(       ) 3 1
 AI4403
 AI4403.Superseded values are not recommended for survey control.
 AI4403
 AI4403.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4403.See file dsdata.pdf to determine how the superseded data were derived.
 AI4403
 AI4403_MARKER: DD = SURVEY DISK
 AI4403_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4403_STAMPING: GIS 125
 AI4403_MARK LOGO: MD-005
 AI4403_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4403_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4403+STABILITY: SURFACE MOTION
 AI4403_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4403+SATELLITE: SATELLITE OBSERVATIONS - May 22, 2013
 AI4403
 AI4403  HISTORY     - Date     Condition        Report By
 AI4403  HISTORY     - 1997     MONUMENTED       MD-005
 AI4403  HISTORY     - 20101127 GOOD             NGS
 AI4403  HISTORY     - 20120717 GOOD             GPSSS
 AI4403  HISTORY     - 20130522 GOOD             GPSSS
 AI4403
 AI4403                          STATION DESCRIPTION
 AI4403
 AI4403'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4403'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4403'LOCATED ABOUT 2.8 MILES (4.5 KM) SOUTH OF HEREFORD AND 4.7 MILES (7.6
 AI4403'KM) NORTH OF COCKEYSVILLE.  TO REACH THE STATION FROM THE BELFAST ROAD
 AI4403'UNDERPASS OF I83 AT EXIT 24, GO EAST ON BELFAST ROAD FOR 0.35 MILES
 AI4403'(0.56 KM) TO THE STATION ON THE LEFT.  STATION MARK IS SET IN THE TOP
 AI4403'OF A 10 INCH CONCRETE MONUMENT FLUSH WITH THE GROUND.  IT IS 60 FEET
 AI4403'(18.3 M) NORTHWEST FROM THE CORNER NORTH END OF A CONCRETE HEADWALL,
 AI4403'108 FEET (32.9 M) SOUTHEAST FROM A BELL TELEPHONE UTILITY BOX ON THE
 AI4403'SOUTHWEST SIDE OF THE ROAD, AND 21 FEET (6.4 M) NORTHEAST FROM THE
 AI4403'CENTERLINE OF BELFAST ROAD.
 AI4403
 AI4403                          STATION RECOVERY (2010)
 AI4403
 AI4403'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 AI4403'RECOVERED IN GOOD CONDITION.
 AI4403
 AI4403                          STATION RECOVERY (2012)
 AI4403
 AI4403'RECOVERY NOTE BY GPS SALES AND SERVICES 2012 (MB)
 AI4403'RECOVERED AND USED BY MIKE BUTLER, DEWEY LILLY AND MIKE ESTES OF
 AI4403'NORTHERN BAY SURVEYS
 AI4403
 AI4403                          STATION RECOVERY (2013)
 AI4403
 AI4403'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (SS)
 AI4403'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4404 ***********************************************************************
 AI4404  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4404  DESIGNATION -  GIS 126
 AI4404  PID         -  AI4404
 AI4404  STATE/COUNTY-  MD/BALTIMORE
 AI4404  COUNTRY     -  US
 AI4404  USGS QUAD   -  PHOENIX (2016)
 AI4404
 AI4404                         *CURRENT SURVEY CONTROL
 AI4404  ______________________________________________________________________
 AI4404* NAD 83(2011) POSITION- 39 33 28.54124(N) 076 31 56.55171(W)   ADJUSTED
 AI4404* NAD 83(2011) ELLIP HT-    90.577 (meters)        (06/27/12)   ADJUSTED
 AI4404* NAD 83(2011) EPOCH   -  2010.00
 AI4404* NAVD 88 ORTHO HEIGHT -   123.06  (meters)      403.7   (feet) GPS OBS
 AI4404  ______________________________________________________________________
 AI4404  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4404  GEOID HEIGHT    -        -32.490 (meters)                     GEOID99
 AI4404  GEOID HEIGHT    -        -32.487 (meters)                     GEOID18
 AI4404  NAD 83(2011) X  -  1,146,821.768 (meters)                     COMP
 AI4404  NAD 83(2011) Y  - -4,788,775.516 (meters)                     COMP
 AI4404  NAD 83(2011) Z  -  4,040,321.842 (meters)                     COMP
 AI4404  LAPLACE CORR    -         -2.88  (seconds)                    DEFLEC18
 AI4404
 AI4404  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4404  Standards:
 AI4404         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4404            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4404  -------------------------------------------------------------------
 AI4404  NETWORK    0.64   1.02           0.29   0.23   0.52     -0.02464103
 AI4404  -------------------------------------------------------------------
 AI4404  Click here for local accuracies and other accuracy information.
 AI4404
 AI4404.The horizontal coordinates were established by GPS observations
 AI4404.and adjusted by the National Geodetic Survey in June 2012.
 AI4404
 AI4404.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4404.been affixed to the stable North American tectonic plate. See 
 AI4404.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4404
 AI4404.The horizontal coordinates are valid at the epoch date displayed above
 AI4404.which is a decimal equivalence of Year/Month/Day.
 AI4404
 AI4404.The orthometric height was determined by GPS observations and a
 AI4404.high-resolution geoid model using precise GPS observation and
 AI4404.processing techniques.
 AI4404
 AI4404.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4404.GEOID18 height accuracy estimate available here.
 AI4404
 AI4404.Click photographs - Photos may exist for this station.
 AI4404
 AI4404.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4404
 AI4404.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4404
 AI4404.The ellipsoidal height was determined by GPS observations
 AI4404.and is referenced to NAD 83.
 AI4404
 AI4404. The following values were computed from the NAD 83(2011) position.
 AI4404
 AI4404;                    North         East     Units Scale Factor Converg.
 AI4404;SPC MD       -   210,049.445   440,189.230   MT  1.00002066   +0 17 36.6
 AI4404;SPC MD       -   689,137.22  1,444,187.50   sFT  1.00002066   +0 17 36.6
 AI4404;UTM  18      - 4,379,814.732   368,354.304   MT  0.99981337   -0 58 33.8
 AI4404
 AI4404!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4404!SPC MD       -   0.99998579  x   1.00002066  =   1.00000645
 AI4404!UTM  18      -   0.99998579  x   0.99981337  =   0.99979916
 AI4404
 AI4404_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6835479814(NAD 83)
 AI4404
 AI4404                          SUPERSEDED SURVEY CONTROL
 AI4404
 AI4404  NAD 83(2007)-  39 33 28.54143(N)    076 31 56.55232(W) AD(2002.00) 0
 AI4404  ELLIP H (02/10/07)   90.597  (m)                       GP(2002.00)    
 AI4404  ELLIP H (08/30/02)   90.598  (m)                       GP(       ) 4 2
 AI4404  NAD 83(1991)-  39 33 28.54166(N)    076 31 56.55189(W) AD(       ) 1
 AI4404  ELLIP H (03/31/00)   90.548  (m)                       GP(       ) 3 1
 AI4404
 AI4404.Superseded values are not recommended for survey control.
 AI4404
 AI4404.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4404.See file dsdata.pdf to determine how the superseded data were derived.
 AI4404
 AI4404_MARKER: DD = SURVEY DISK
 AI4404_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4404_STAMPING: GIS 126
 AI4404_MARK LOGO: MD-005
 AI4404_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4404_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4404+STABILITY: SURFACE MOTION
 AI4404_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4404+SATELLITE: SATELLITE OBSERVATIONS - 1997
 AI4404
 AI4404  HISTORY     - Date     Condition        Report By
 AI4404  HISTORY     - 1997     MONUMENTED       MD-005
 AI4404
 AI4404                          STATION DESCRIPTION
 AI4404
 AI4404'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4404'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4404'LOCATED ABOUT 7.3 MILES (11.7 KM) SOUTHEAST OF HEREFORD AND 3.2 MILES
 AI4404'(5.1 KM) NORTHEAST OF JACKSONVILLE.  TO REACH THE STATION FROM THE
 AI4404'INTERSECTION OF ROUTE 146 (JARRETTSVILLE PIKE) WITH ROUTE 145 (SWEET
 AI4404'AIR ROAD) IN JACKSONVILLE, GO NORTHEAST ON ROUTE 146 FOR 3.2 MILES
 AI4404'(5.1 KM) TO THE INTERSECTION WITH HESS ROAD.  TURN LEFT AND GO
 AI4404'NORTHWEST ON HESS ROAD FOR 0.4 MILES (0.6 KM) TO THE BRIDGE OVER THE
 AI4404'LITTLE GUNPOWDER FALLS AND THE STATION ON THE RIGHT ON THE WEST SIDE
 AI4404'OF THE BRIDGE.  STATION MARK IS SET IN THE TOP OF A 10 INCH DIAMETER
 AI4404'CONCRETE MONUMENT FLUSH WITH THE GROUND.  IT IS 23 FEET (7.0 M) SOUTH
 AI4404'FROM THE EAST END OF A WOOD PASTURE FENCE, 16.5 FEET (5.0 M) NORTHWEST
 AI4404'FROM THE WEST END OF A METAL GUARD RAIL, AND 28 FEET (8.5 M) NORTH OF
 AI4404'THE CENTERLINE 0F HESS ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4405 ***********************************************************************
 AI4405  HT_MOD      -  This is a Height Modernization Survey Station.
 AI4405  DESIGNATION -  GIS 127
 AI4405  PID         -  AI4405
 AI4405  STATE/COUNTY-  MD/BALTIMORE
 AI4405  COUNTRY     -  US
 AI4405  USGS QUAD   -  HEREFORD (2016)
 AI4405
 AI4405                         *CURRENT SURVEY CONTROL
 AI4405  ______________________________________________________________________
 AI4405* NAD 83(2011) POSITION- 39 34 17.01939(N) 076 38 01.03795(W)   ADJUSTED
 AI4405* NAD 83(2011) ELLIP HT-    87.490 (meters)        (06/27/12)   ADJUSTED
 AI4405* NAD 83(2011) EPOCH   -  2010.00
 AI4405* NAVD 88 ORTHO HEIGHT -   119.83  (meters)      393.1   (feet) GPS OBS
 AI4405  ______________________________________________________________________
 AI4405  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI4405  GEOID HEIGHT    -        -32.351 (meters)                     GEOID99
 AI4405  GEOID HEIGHT    -        -32.337 (meters)                     GEOID18
 AI4405  NAD 83(2011) X  -  1,138,137.133 (meters)                     COMP
 AI4405  NAD 83(2011) Y  - -4,789,865.731 (meters)                     COMP
 AI4405  NAD 83(2011) Z  -  4,041,472.471 (meters)                     COMP
 AI4405  LAPLACE CORR    -         -3.17  (seconds)                    DEFLEC18
 AI4405
 AI4405  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4405  Standards:
 AI4405         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4405            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4405  -------------------------------------------------------------------
 AI4405  NETWORK    0.57   0.90           0.25   0.21   0.46     -0.01373019
 AI4405  -------------------------------------------------------------------
 AI4405  Click here for local accuracies and other accuracy information.
 AI4405
 AI4405.The horizontal coordinates were established by GPS observations
 AI4405.and adjusted by the National Geodetic Survey in June 2012.
 AI4405
 AI4405.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4405.been affixed to the stable North American tectonic plate. See 
 AI4405.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4405
 AI4405.The horizontal coordinates are valid at the epoch date displayed above
 AI4405.which is a decimal equivalence of Year/Month/Day.
 AI4405
 AI4405.The orthometric height was determined by GPS observations and a
 AI4405.high-resolution geoid model using precise GPS observation and
 AI4405.processing techniques.
 AI4405
 AI4405.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4405.GEOID18 height accuracy estimate available here.
 AI4405
 AI4405.Click photographs - Photos may exist for this station.
 AI4405
 AI4405.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4405
 AI4405.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4405
 AI4405.The ellipsoidal height was determined by GPS observations
 AI4405.and is referenced to NAD 83.
 AI4405
 AI4405. The following values were computed from the NAD 83(2011) position.
 AI4405
 AI4405;                    North         East     Units Scale Factor Converg.
 AI4405;SPC MD       -   211,504.815   431,481.844   MT  1.00002349   +0 13 47.8
 AI4405;SPC MD       -   693,912.05  1,415,620.02   sFT  1.00002349   +0 13 47.8
 AI4405;UTM  18      - 4,381,462.439   359,683.004   MT  0.99984241   -1 02 27.1
 AI4405
 AI4405!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4405!SPC MD       -   0.99998627  x   1.00002349  =   1.00000976
 AI4405!UTM  18      -   0.99998627  x   0.99984241  =   0.99982869
 AI4405
 AI4405_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5968381462(NAD 83)
 AI4405
 AI4405                          SUPERSEDED SURVEY CONTROL
 AI4405
 AI4405  NAD 83(2007)-  39 34 17.01957(N)    076 38 01.03858(W) AD(2002.00) 0
 AI4405  ELLIP H (02/10/07)   87.510  (m)                       GP(2002.00)    
 AI4405  ELLIP H (08/30/02)   87.514  (m)                       GP(       ) 4 2
 AI4405  NAD 83(1991)-  39 34 17.01989(N)    076 38 01.03842(W) AD(       ) 1
 AI4405  ELLIP H (03/31/00)   87.455  (m)                       GP(       ) 3 1
 AI4405
 AI4405.Superseded values are not recommended for survey control.
 AI4405
 AI4405.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4405.See file dsdata.pdf to determine how the superseded data were derived.
 AI4405
 AI4405_MARKER: DD = SURVEY DISK
 AI4405_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI4405_STAMPING: GIS-127
 AI4405_MARK LOGO: MD-005
 AI4405_PROJECTION: FLUSH
 AI4405_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AI4405_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI4405+STABILITY: SURFACE MOTION
 AI4405_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AI4405+SATELLITE: SATELLITE OBSERVATIONS - December 29, 2021
 AI4405
 AI4405  HISTORY     - Date     Condition        Report By
 AI4405  HISTORY     - 1997     MONUMENTED       MD-005
 AI4405  HISTORY     - 20211229 GOOD             MD-005
 AI4405
 AI4405                          STATION DESCRIPTION
 AI4405
 AI4405'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4405'DESCRIBED BY BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) .  STATION IS
 AI4405'LOCATED ABOUT 2.0 MILES (3.2 KM) SOUTHEAST OF HEREFORD AND 6.0 MILES
 AI4405'(9.7 KM) NORTH OF COCKEYSVILLE.  TO REACH THE STATION FROM THE BELFAST
 AI4405'ROAD UNDERPASS OF I83 AT EXIT 24, GO EAST ON BELFAST ROAD FOR 1.15
 AI4405'MILES (1.85 KM) TO THE INTERSECTION WITH ROUTE 45 (YORK ROAD) . TURN
 AI4405'LEFT AND GO NORTH ON ROUTE 45 FOR 2.0 MILES (3.2 KM) TO THE
 AI4405'INTERSECTION WITH CORBETT ROAD ON THE RIGHT.  TURN RIGHT AND GO EAST
 AI4405'ON CORBETT ROAD FOR 1.4 MILES (2.3 KM) TO A STORM WATER RETENTION POND
 AI4405'AND THE STATION ON THE RIGHT.THE STATION IS ON THE EAST SIDE OF THE
 AI4405'STORM WATER MANAGEMENT AREA.  STATION MARK IS SET IN THE TOP OF A 10
 AI4405'INCH CONCRETE MONUMENT FLUSH WITH THE GROUND.  IT IS 17 FEET (5.2 M)
 AI4405'NORTHWEST FROM THE CENTERLINE OF A PAVED PRIVATE ACCESS ROAD IN FRONT
 AI4405'OF HOUSE NUMBER 1229, 45 FEET (13.7 M) SOUTHWEST FROM THE CENTER OF A
 AI4405'GRASS ISLAND IN THE CENTER OF THE CIRCLE OF THE PAVED ROAD, AND 118
 AI4405'FEET (36.0 M) SOUTHEAST FROM THE CENTERLINE OF CORBETT ROAD.
 AI4405
 AI4405                          STATION RECOVERY (2021)
 AI4405
 AI4405'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2021 (JG)
 AI4405'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7696 ***********************************************************************
 AC7696  DESIGNATION -  GIS 13
 AC7696  PID         -  AC7696
 AC7696  STATE/COUNTY-  MD/BALTIMORE
 AC7696  COUNTRY     -  US
 AC7696  USGS QUAD   -  MIDDLE RIVER (2016)
 AC7696
 AC7696                         *CURRENT SURVEY CONTROL
 AC7696  ______________________________________________________________________
 AC7696* NAD 83(2011) POSITION- 39 21 28.85070(N) 076 25 46.98850(W)   ADJUSTED
 AC7696* NAD 83(2011) ELLIP HT-     4.219 (meters)        (06/27/12)   ADJUSTED
 AC7696* NAD 83(2011) EPOCH   -  2010.00
 AC7696* NAVD 88 ORTHO HEIGHT -    37.225 (meters)      122.13  (feet) ADJUSTED
 AC7696  ______________________________________________________________________
 AC7696  GEOID HEIGHT    -        -32.989 (meters)                     GEOID18
 AC7696  NAD 83(2011) X  -  1,158,693.974 (meters)                     COMP
 AC7696  NAD 83(2011) Y  - -4,800,359.959 (meters)                     COMP
 AC7696  NAD 83(2011) Z  -  4,023,130.049 (meters)                     COMP
 AC7696  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 AC7696  DYNAMIC HEIGHT  -         37.205 (meters)      122.06  (feet) COMP
 AC7696  MODELED GRAVITY -    980,106.2   (mgal)                       NAVD 88
 AC7696
 AC7696  VERT ORDER      -  THIRD
 AC7696
 AC7696  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7696  Standards:
 AC7696         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7696            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7696  -------------------------------------------------------------------
 AC7696  NETWORK    0.58   1.25           0.26   0.21   0.64      0.02329698
 AC7696  -------------------------------------------------------------------
 AC7696  Click here for local accuracies and other accuracy information.
 AC7696
 AC7696.The horizontal coordinates were established by GPS observations
 AC7696.and adjusted by the National Geodetic Survey in June 2012.
 AC7696
 AC7696.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7696.been affixed to the stable North American tectonic plate. See 
 AC7696.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7696
 AC7696.The horizontal coordinates are valid at the epoch date displayed above
 AC7696.which is a decimal equivalence of Year/Month/Day.
 AC7696
 AC7696.The orthometric height was determined by differential leveling and
 AC7696.adjusted by the NATIONAL GEODETIC SURVEY
 AC7696.in February 1998.
 AC7696
 AC7696.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7696.GEOID18 height accuracy estimate available here.
 AC7696
 AC7696.Click photographs - Photos may exist for this station.
 AC7696
 AC7696.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7696
 AC7696.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7696
 AC7696.The ellipsoidal height was determined by GPS observations
 AC7696.and is referenced to NAD 83.
 AC7696
 AC7696.The dynamic height is computed by dividing the NAVD 88
 AC7696.geopotential number by the normal gravity value computed on the
 AC7696.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7696.degrees latitude (g = 980.6199 gals.).
 AC7696
 AC7696.The modeled gravity was interpolated from observed gravity values.
 AC7696
 AC7696. The following values were computed from the NAD 83(2011) position.
 AC7696
 AC7696;                    North         East     Units Scale Factor Converg.
 AC7696;SPC MD       -   187,904.686   449,150.421   MT  0.99998520   +0 21 28.5
 AC7696;SPC MD       -   616,483.96  1,473,587.67   sFT  0.99998520   +0 21 28.5
 AC7696;UTM  18      - 4,357,481.741   376,821.906   MT  0.99978681   -0 54 24.4
 AC7696
 AC7696!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7696!SPC MD       -   0.99999934  x   0.99998520  =   0.99998454
 AC7696!UTM  18      -   0.99999934  x   0.99978681  =   0.99978615
 AC7696
 AC7696_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7682157481(NAD 83)
 AC7696
 AC7696                          SUPERSEDED SURVEY CONTROL
 AC7696
 AC7696  NAD 83(2007)-  39 21 28.85093(N)    076 25 46.98926(W) AD(2002.00) 0
 AC7696  ELLIP H (02/10/07)    4.238  (m)                       GP(2002.00)    
 AC7696  ELLIP H (08/30/02)    4.251  (m)                       GP(       ) 4 2
 AC7696  NAD 83(1991)-  39 21 28.85094(N)    076 25 46.98907(W) AD(       ) 1
 AC7696  ELLIP H (04/08/97)    4.278  (m)                       GP(       ) 3 1
 AC7696  NAVD 88 (04/08/97)   37.2    (m)  GEOID93  model used  GPS OBS        
 AC7696
 AC7696.Superseded values are not recommended for survey control.
 AC7696
 AC7696.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7696.See file dsdata.pdf to determine how the superseded data were derived.
 AC7696
 AC7696_MARKER: DD = SURVEY DISK
 AC7696_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7696_STAMPING: NO. GIS-13 1995
 AC7696_MARK LOGO: MD-005
 AC7696_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7696_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7696+STABILITY: SURFACE MOTION
 AC7696_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7696+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2017
 AC7696
 AC7696  HISTORY     - Date     Condition        Report By
 AC7696  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7696  HISTORY     - 19971031 GOOD             DMW
 AC7696  HISTORY     - 19981013 GOOD             DMW
 AC7696  HISTORY     - 20030421 GOOD             INDIV
 AC7696  HISTORY     - 20100203 GOOD             GRWAS
 AC7696  HISTORY     - 20111221 GOOD             GPSSS
 AC7696  HISTORY     - 20141017 GOOD             INDIV
 AC7696  HISTORY     - 20170303 GOOD             JMTMD
 AC7696
 AC7696                          STATION DESCRIPTION
 AC7696
 AC7696'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7696'STATION IS LOCATED ABOUT 9.5 MI (15.3 KM) NORTHEAST OF THE CENTER OF
 AC7696'BALTIMORE AND ABOUT 1.5 MI (2.4 KM) NORTH OF THE GLEN L. MARTIN STATE
 AC7696'AIRPORT. TO REACH STATION FROM THE WHITE MARSH BLVD (ROUTE 43)
 AC7696'OVERPASS OVER I-95 GO 1.25 MI (2.01 KM) EAST ON WHITE MARSH BLVD TO
 AC7696'ROUTE 40 (PULASKI HIGHWAY). TURN LEFT AND GO WEST ON ROUTE 40 FOR 0.7
 AC7696'MI (1.1 KM) TO REAMS ROAD ON THE LEFT. MAKE A U TURN ON ROUTE 40 AND
 AC7696'THEN RIGHT ON REAMS ROAD FOR 0.80 MI (1.29 KM) TO THE INTERSECTION
 AC7696'WITH BIRD RIVER ROAD AND THE STATION ON THE RIGHT. STATION MARK IS SET
 AC7696'IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET 0.2 FT (0.1 M)
 AC7696'BELOW THE GROUND. IT IS 33.80 FT (10.30 M) SOUTHWEST OF THE CENTERLINE
 AC7696'OF REAMS ROAD, 61.25 FT (18.67 M) SOUTHWEST OF POWER POLE NO. 496191,
 AC7696'8.20 FT (2.50 M) WEST OF THE STOP SIGN, 35.25 FT (10.74 M) NORTHWEST
 AC7696'OF THE CENTERLINE OF BIRD RIVER RD AND 100.50 FT (30.63 M) NORTH OF A
 AC7696'FIRE HYDRANT.
 AC7696
 AC7696                          STATION RECOVERY (1997)
 AC7696
 AC7696'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AC7696'RECOVERED AS DESCRIBED.
 AC7696
 AC7696                          STATION RECOVERY (1998)
 AC7696
 AC7696'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 AC7696'RECOVERED IN GOOD CONDITION.
 AC7696
 AC7696                          STATION RECOVERY (2003)
 AC7696
 AC7696'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003
 AC7696'RECOVERED BY COMPASSCOM, INC.
 AC7696
 AC7696                          STATION RECOVERY (2010)
 AC7696
 AC7696'RECOVERY NOTE BY GRW AERIAL SURVEY 2010 (FCB)
 AC7696'RECOVERED AS DESCRIBED
 AC7696
 AC7696                          STATION RECOVERY (2011)
 AC7696
 AC7696'RECOVERY NOTE BY GPS SALES AND SERVICES 2011 (TED)
 AC7696'RECOVERED BY TED AND TOM OF SURVEY SERVICES OF MD, LLC
 AC7696
 AC7696                          STATION RECOVERY (2014)
 AC7696
 AC7696'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 AC7696'RECOVERED AS DESCRIBED, USED FOR STATIC GPS
 AC7696
 AC7696                          STATION RECOVERY (2017)
 AC7696
 AC7696'RECOVERY NOTE BY JMT ENGINEERING 2017 (EAS)
 AC7696'CHECK WITH RTN N+0.03 E+0.01 Z-0.2
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6427 ***********************************************************************
 DG6427  DESIGNATION -  GIS 13
 DG6427  PID         -  DG6427
 DG6427  STATE/COUNTY-  MD/TALBOT
 DG6427  COUNTRY     -  US
 DG6427  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6427
 DG6427                         *CURRENT SURVEY CONTROL
 DG6427  ______________________________________________________________________
 DG6427* NAD 83(1986) POSITION- 38 47 11.22   (N) 076 13 49.26   (W)   HD_HELD1
 DG6427* NAVD 88 ORTHO HEIGHT -     2.304 (meters)        7.56  (feet) ADJUSTED
 DG6427  ______________________________________________________________________
 DG6427  GEOID HEIGHT    -        -34.313 (meters)                     GEOID18
 DG6427  DYNAMIC HEIGHT  -          2.303 (meters)        7.56  (feet) COMP
 DG6427  MODELED GRAVITY -    980,046.3   (mgal)                       NAVD 88
 DG6427
 DG6427  VERT ORDER      -  SECOND    CLASS I
 DG6427
 DG6427.The horizontal coordinates were determined by differentially corrected
 DG6427.hand held GPS observations or other comparable positioning techniques
 DG6427.and have an estimated accuracy of +/- 3 meters.
 DG6427
 DG6427.The orthometric height was determined by differential leveling and
 DG6427.adjusted by the NATIONAL GEODETIC SURVEY
 DG6427.in September 2004.
 DG6427
 DG6427.No vertical observational check was made to the station.
 DG6427
 DG6427.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6427.GEOID18 height accuracy estimate available here.
 DG6427
 DG6427.Click photographs - Photos may exist for this station.
 DG6427
 DG6427.The dynamic height is computed by dividing the NAVD 88
 DG6427.geopotential number by the normal gravity value computed on the
 DG6427.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6427.degrees latitude (g = 980.6199 gals.).
 DG6427
 DG6427.The modeled gravity was interpolated from observed gravity values.
 DG6427
 DG6427;                    North         East    Units  Estimated Accuracy
 DG6427;SPC MD       -   124,582.3     466,867.9     MT  (+/- 3 meters HH1 GPS) 
 DG6427
 DG6427_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9314093797(NAD 83)
 DG6427
 DG6427                          SUPERSEDED SURVEY CONTROL
 DG6427
 DG6427.No superseded survey control is available for this station.
 DG6427
 DG6427_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6427_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6427_STAMPING: NO GIS 13 1995
 DG6427_MARK LOGO: MD1370
 DG6427_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6427_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6427+STABILITY: SURFACE MOTION
 DG6427_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6427+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6427
 DG6427  HISTORY     - Date     Condition        Report By
 DG6427  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6427  HISTORY     - 19991213 GOOD             MDSHA
 DG6427
 DG6427                          STATION DESCRIPTION
 DG6427
 DG6427'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6427'THE MARK IS LOCATED IN THE TOWN OF SAINT MICHAELS.  TO REACH THE MARK
 DG6427'FROM THE POST OFFICE IN SAINT MICHAELS, PROCEED NORTH ALONG MARYLAND
 DG6427'STATE HIGHWAY 33 FOR 0.15 MILES (0.24 KM) TO RAILROAD AVENUE, TURN
 DG6427'LEFT AND PROCEED WEST ALONG RAILROAD AVENUE FOR 0.3 MILES (0.5 KM) TO
 DG6427'A HIGH TENSION POWER LINE CROSSING AND THE MARK ON THE LEFT.  IT IS
 DG6427'27.5 FEET (8.4 M) SOUTH OF THE CENTER OF RAILROAD AVENUE, 11.0 FEET
 DG6427'(3.4 M) SOUTHWEST OF POWER POLE NUMBER 28972-08648, 51.5 FEET (15.7 M)
 DG6427'WEST OF A FIRE HYDRANT, 50.0 FEET (15.2 M) NORTHEAST OF HIGH TENSION
 DG6427'POWER POLE NUMBER 28970-08642 AND 110.0 FEET (33.5 M) EAST OF POWER
 DG6427'POLE NUMBER 28961-08648.  IT IS A TOSM DISK SET IN THE TOP OF A 7 INCH
 DG6427'(18 CM) ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND AND LEVEL WITH
 DG6427'THE SURFACE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7697 ***********************************************************************
 AC7697  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7697  DESIGNATION -  GIS 14
 AC7697  PID         -  AC7697
 AC7697  STATE/COUNTY-  MD/BALTIMORE
 AC7697  COUNTRY     -  US
 AC7697  USGS QUAD   -  MIDDLE RIVER (2016)
 AC7697
 AC7697                         *CURRENT SURVEY CONTROL
 AC7697  ______________________________________________________________________
 AC7697* NAD 83(2011) POSITION- 39 22 03.66522(N) 076 24 23.08705(W)   ADJUSTED
 AC7697* NAD 83(2011) ELLIP HT-   -12.148 (meters)        (06/27/12)   ADJUSTED
 AC7697* NAD 83(2011) EPOCH   -  2010.00
 AC7697* NAVD 88 ORTHO HEIGHT -    20.85  (meters)       68.4   (feet) GPS OBS
 AC7697  ______________________________________________________________________
 AC7697  GEOID HEIGHT    -        -33.017 (meters)                     GEOID18
 AC7697  NAD 83(2011) X  -  1,160,483.480 (meters)                     COMP
 AC7697  NAD 83(2011) Y  - -4,799,214.071 (meters)                     COMP
 AC7697  NAD 83(2011) Z  -  4,023,949.766 (meters)                     COMP
 AC7697  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 AC7697
 AC7697  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7697  Standards:
 AC7697         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7697            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7697  -------------------------------------------------------------------
 AC7697  NETWORK    0.58   1.23           0.25   0.22   0.63     -0.05094460
 AC7697  -------------------------------------------------------------------
 AC7697  Click here for local accuracies and other accuracy information.
 AC7697
 AC7697.The horizontal coordinates were established by GPS observations
 AC7697.and adjusted by the National Geodetic Survey in June 2012.
 AC7697
 AC7697.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7697.been affixed to the stable North American tectonic plate. See 
 AC7697.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7697
 AC7697.The horizontal coordinates are valid at the epoch date displayed above
 AC7697.which is a decimal equivalence of Year/Month/Day.
 AC7697
 AC7697.The orthometric height was determined by GPS observations and a
 AC7697.high-resolution geoid model using precise GPS observation and
 AC7697.processing techniques.
 AC7697
 AC7697.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7697.GEOID18 height accuracy estimate available here.
 AC7697
 AC7697.Click photographs - Photos may exist for this station.
 AC7697
 AC7697.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7697
 AC7697.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7697
 AC7697.The ellipsoidal height was determined by GPS observations
 AC7697.and is referenced to NAD 83.
 AC7697
 AC7697. The following values were computed from the NAD 83(2011) position.
 AC7697
 AC7697;                    North         East     Units Scale Factor Converg.
 AC7697;SPC MD       -   188,991.118   451,152.067   MT  0.99998664   +0 22 21.2
 AC7697;SPC MD       -   620,048.36  1,480,154.74   sFT  0.99998664   +0 22 21.2
 AC7697;UTM  18      - 4,358,523.517   378,846.635   MT  0.99978072   -0 53 31.9
 AC7697
 AC7697!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7697!SPC MD       -   1.00000191  x   0.99998664  =   0.99998855
 AC7697!UTM  18      -   1.00000191  x   0.99978072  =   0.99978263
 AC7697
 AC7697_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7884658523(NAD 83)
 AC7697
 AC7697                          SUPERSEDED SURVEY CONTROL
 AC7697
 AC7697  NAD 83(2007)-  39 22 03.66545(N)    076 24 23.08780(W) AD(2002.00) 0
 AC7697  ELLIP H (02/10/07)  -12.130  (m)                       GP(2002.00)    
 AC7697  ELLIP H (08/30/02)  -12.115  (m)                       GP(       ) 4 2
 AC7697  NAD 83(1991)-  39 22 03.66555(N)    076 24 23.08766(W) AD(       ) 1
 AC7697  ELLIP H (04/08/97)  -12.101  (m)                       GP(       ) 3 1
 AC7697  NAVD 88 (02/11/98)   20.878  (m)           68.50   (f) ADJUSTED    3 0
 AC7697  NAVD 88 (04/08/97)   20.9    (m)  GEOID93  model used  GPS OBS        
 AC7697
 AC7697.Superseded values are not recommended for survey control.
 AC7697
 AC7697.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7697.See file dsdata.pdf to determine how the superseded data were derived.
 AC7697
 AC7697_MARKER: DD = SURVEY DISK
 AC7697_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7697_STAMPING: GIS-14 1995
 AC7697_MARK LOGO: MD-005
 AC7697_PROJECTION: RECESSED 5 CENTIMETERS
 AC7697_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7697_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7697+STABILITY: SURFACE MOTION
 AC7697_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7697+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2022
 AC7697
 AC7697  HISTORY     - Date     Condition        Report By
 AC7697  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7697  HISTORY     - 20020920 GOOD             DMW
 AC7697  HISTORY     - 20050527 GOOD             USPSQD
 AC7697  HISTORY     - 20080228 GOOD             DEWDAV
 AC7697  HISTORY     - 20111221 GOOD             GPSSS
 AC7697  HISTORY     - 20160427 GOOD             USPSQD
 AC7697  HISTORY     - 20210429 GOOD             MDSHA
 AC7697  HISTORY     - 20220208 GOOD             MDSHA
 AC7697
 AC7697                          STATION DESCRIPTION
 AC7697
 AC7697'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7697'STATION IS LOCATED ABOUT 10.5 MI (16.9 KM) NORTHEAST OF THE CENTER OF
 AC7697'BALTIMORE AND ABOUT 2.0 MI (3.2 KM) NORTH OF GLEN L. MARTIN STATE
 AC7697'AIRPORT. TO REACH STATION FROM THE WHITE MARSH BLVD (ROUTE 43)
 AC7697'OVERPASS OVER I-95 GO EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01 KM)
 AC7697'TO ROUTE 40 (PULASKI HIGHWAY). TURN RIGHT AND GO EAST ON RT 40 FOR 0.6
 AC7697'MI (1.0 KM) TO EBENEZER RD. TURN RIGHT AND GO EAST ON EBENEZER RD FOR
 AC7697'1.45 MI (2.33 KM) TO THE INTERSECTION WITH BIRD RIVER ROAD AND STATION
 AC7697'ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AC7697'CONCERETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 28.33 FT (8.64 M)
 AC7697'SOUTH OF POWER POLE NO. 236362, 48.73 FT (14.85 M) SOUTHWEST OF THE
 AC7697'CENTERLINE OF EBENEZER RD, 41.62 FT (12.69 M) WEST OF A WATER VALVE
 AC7697'MANHOLE AND 32.73 FT (9.98 M) NORTHWEST OF THE CENTERLINE OF BIRD
 AC7697'RIVER ROAD.
 AC7697
 AC7697                          STATION RECOVERY (2002)
 AC7697
 AC7697'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (JBM)
 AC7697'RECOVERED IN GOOD CONDITION.
 AC7697
 AC7697                          STATION RECOVERY (2005)
 AC7697
 AC7697'RECOVERY NOTE BY US POWER SQUADRON 2005 (JJH)
 AC7697'RECOVERED IN GOOD CONDITION.
 AC7697
 AC7697                          STATION RECOVERY (2008)
 AC7697
 AC7697'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7697'RECOVERED IN GOOD CONDITION.
 AC7697
 AC7697                          STATION RECOVERY (2011)
 AC7697
 AC7697'RECOVERY NOTE BY GPS SALES AND SERVICES 2011 (TED)
 AC7697'RECOVERED BY TED AND TOM OF SURVEY SERVICES OF MD, LLC
 AC7697
 AC7697                          STATION RECOVERY (2016)
 AC7697
 AC7697'RECOVERY NOTE BY US POWER SQUADRON 2016 (RS)
 AC7697'RECOVERED IN GOOD CONDITION.
 AC7697
 AC7697                          STATION RECOVERY (2021)
 AC7697
 AC7697'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 AC7697'RECOVERED IN GOOD CONDITION.
 AC7697
 AC7697                          STATION RECOVERY (2022)
 AC7697
 AC7697'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 AC7697'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6428 ***********************************************************************
 DG6428  DESIGNATION -  GIS 14
 DG6428  PID         -  DG6428
 DG6428  STATE/COUNTY-  MD/TALBOT
 DG6428  COUNTRY     -  US
 DG6428  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6428
 DG6428                         *CURRENT SURVEY CONTROL
 DG6428  ______________________________________________________________________
 DG6428* NAD 83(1986) POSITION- 38 47 25.54   (N) 076 13 49.04   (W)   HD_HELD1
 DG6428* NAVD 88 ORTHO HEIGHT -     2.731 (meters)        8.96  (feet) ADJUSTED
 DG6428  ______________________________________________________________________
 DG6428  GEOID HEIGHT    -        -34.304 (meters)                     GEOID18
 DG6428  DYNAMIC HEIGHT  -          2.729 (meters)        8.95  (feet) COMP
 DG6428  MODELED GRAVITY -    980,046.8   (mgal)                       NAVD 88
 DG6428
 DG6428  VERT ORDER      -  SECOND    CLASS I
 DG6428
 DG6428.The horizontal coordinates were determined by differentially corrected
 DG6428.hand held GPS observations or other comparable positioning techniques
 DG6428.and have an estimated accuracy of +/- 3 meters.
 DG6428
 DG6428.The orthometric height was determined by differential leveling and
 DG6428.adjusted by the NATIONAL GEODETIC SURVEY
 DG6428.in September 2004.
 DG6428
 DG6428.No vertical observational check was made to the station.
 DG6428
 DG6428.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6428.GEOID18 height accuracy estimate available here.
 DG6428
 DG6428.Click photographs - Photos may exist for this station.
 DG6428
 DG6428.The dynamic height is computed by dividing the NAVD 88
 DG6428.geopotential number by the normal gravity value computed on the
 DG6428.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6428.degrees latitude (g = 980.6199 gals.).
 DG6428
 DG6428.The modeled gravity was interpolated from observed gravity values.
 DG6428
 DG6428;                    North         East    Units  Estimated Accuracy
 DG6428;SPC MD       -   125,023.9     466,869.5     MT  (+/- 3 meters HH1 GPS) 
 DG6428
 DG6428_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9315194239(NAD 83)
 DG6428
 DG6428                          SUPERSEDED SURVEY CONTROL
 DG6428
 DG6428.No superseded survey control is available for this station.
 DG6428
 DG6428_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6428_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6428_STAMPING: NO GIS 14 1995
 DG6428_MARK LOGO: MD1370
 DG6428_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6428_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6428+STABILITY: SURFACE MOTION
 DG6428_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6428+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6428
 DG6428  HISTORY     - Date     Condition        Report By
 DG6428  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6428  HISTORY     - 19991213 GOOD             MDSHA
 DG6428
 DG6428                          STATION DESCRIPTION
 DG6428
 DG6428'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6428'THE MARK IS LOCATED IN THE TOWN OF SAINT MICHAELS.  TO REACH THE MARK
 DG6428'FROM THE POST OFFICE IN SAINT MICHAELS, PROCEED NORTH ALONG MARYLAND
 DG6428'STATE HIGHWAY 33 FOR 0.3 MILES (0.5 KM) TO DODSON STREET, THEN WEST
 DG6428'ALONG DODSON STREET FOR 0.15 MILES (0.24 KM) TO PERRY STREET, THEN
 DG6428'NORTH ALONG PERRY STREET FOR 0.05 MILES (0.08 KM) TO BROOKS LANE, THEN
 DG6428'WEST ALONG BROOKS LANE FOR 0.1 MILES (0.2 KM) TO A 90 DEGREE TURN TO
 DG6428'THE NORTH, THEN NORTH FOR 0.05 MILES (0.08 KM) TO A 90 DEGREE TURN TO
 DG6428'THE WEST AND THE MARK LOCATED AT THE 90 DEGREE TURN.  IT IS 24.4 FEET
 DG6428'(7.4 M) NORTHEAST OF POWER POLE NUMBER 28975-08789, 36.6 FEET (11.2 M)
 DG6428'NORTHWEST OF POWER POLE NUMBER 28981-08789 AND 8.5 FEET (2.6 M) NORTH
 DG6428'OF THE NORTH EDGE OF A GRAVEL ROAD.  IT IS A TOSM DISK SET IN THE TOP
 DG6428'OF A 7 INCH (18 CM) ROUND CONCRETE MONUMENT BURIED 3 INCH (8 CM) BELOW
 DG6428'THE LEVEL OF THE GROUND AND ABOUT LEVEL WITH THE GRAVEL ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7698 ***********************************************************************
 AC7698  DESIGNATION -  GIS 15
 AC7698  PID         -  AC7698
 AC7698  STATE/COUNTY-  MD/BALTIMORE
 AC7698  COUNTRY     -  US
 AC7698  USGS QUAD   -  GUNPOWDER NECK (2016)
 AC7698
 AC7698                         *CURRENT SURVEY CONTROL
 AC7698  ______________________________________________________________________
 AC7698* NAD 83(2011) POSITION- 39 21 14.57839(N) 076 20 59.37436(W)   ADJUSTED
 AC7698* NAD 83(2011) ELLIP HT-   -26.134 (meters)        (06/27/12)   ADJUSTED
 AC7698* NAD 83(2011) EPOCH   -  2010.00
 AC7698* NAVD 88 ORTHO HEIGHT -     6.984 (meters)       22.91  (feet) ADJUSTED
 AC7698  ______________________________________________________________________
 AC7698  GEOID HEIGHT    -        -33.117 (meters)                     GEOID18
 AC7698  NAD 83(2011) X  -  1,165,446.763 (meters)                     COMP
 AC7698  NAD 83(2011) Y  - -4,798,988.044 (meters)                     COMP
 AC7698  NAD 83(2011) Z  -  4,022,770.467 (meters)                     COMP
 AC7698  LAPLACE CORR    -         -2.93  (seconds)                    DEFLEC18
 AC7698  DYNAMIC HEIGHT  -          6.980 (meters)       22.90  (feet) COMP
 AC7698  MODELED GRAVITY -    980,106.3   (mgal)                       NAVD 88
 AC7698
 AC7698  VERT ORDER      -  THIRD
 AC7698
 AC7698  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7698  Standards:
 AC7698         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7698            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7698  -------------------------------------------------------------------
 AC7698  NETWORK    0.89   2.25           0.40   0.32   1.15     -0.02672055
 AC7698  -------------------------------------------------------------------
 AC7698  Click here for local accuracies and other accuracy information.
 AC7698
 AC7698.The horizontal coordinates were established by GPS observations
 AC7698.and adjusted by the National Geodetic Survey in June 2012.
 AC7698
 AC7698.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7698.been affixed to the stable North American tectonic plate. See 
 AC7698.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7698
 AC7698.The horizontal coordinates are valid at the epoch date displayed above
 AC7698.which is a decimal equivalence of Year/Month/Day.
 AC7698
 AC7698.The orthometric height was determined by differential leveling and
 AC7698.adjusted by the NATIONAL GEODETIC SURVEY
 AC7698.in February 1998.
 AC7698
 AC7698.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7698.GEOID18 height accuracy estimate available here.
 AC7698
 AC7698.Click photographs - Photos may exist for this station.
 AC7698
 AC7698.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7698
 AC7698.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7698
 AC7698.The ellipsoidal height was determined by GPS observations
 AC7698.and is referenced to NAD 83.
 AC7698
 AC7698.The dynamic height is computed by dividing the NAVD 88
 AC7698.geopotential number by the normal gravity value computed on the
 AC7698.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7698.degrees latitude (g = 980.6199 gals.).
 AC7698
 AC7698.The modeled gravity was interpolated from observed gravity values.
 AC7698
 AC7698. The following values were computed from the NAD 83(2011) position.
 AC7698
 AC7698;                    North         East     Units Scale Factor Converg.
 AC7698;SPC MD       -   187,510.581   456,039.114   MT  0.99998462   +0 24 29.1
 AC7698;SPC MD       -   615,190.96  1,496,188.33   sFT  0.99998462   +0 24 29.1
 AC7698;UTM  18      - 4,356,935.837   383,698.793   MT  0.99976654   -0 51 21.7
 AC7698
 AC7698!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7698!SPC MD       -   1.00000410  x   0.99998462  =   0.99998872
 AC7698!UTM  18      -   1.00000410  x   0.99976654  =   0.99977064
 AC7698
 AC7698_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8369856935(NAD 83)
 AC7698
 AC7698                          SUPERSEDED SURVEY CONTROL
 AC7698
 AC7698  NAD 83(2007)-  39 21 14.57864(N)    076 20 59.37514(W) AD(2002.00) 0
 AC7698  ELLIP H (02/10/07)  -26.117  (m)                       GP(2002.00)    
 AC7698  ELLIP H (08/30/02)  -26.084  (m)                       GP(       ) 4 2
 AC7698  NAD 83(1991)-  39 21 14.57904(N)    076 20 59.37485(W) AD(       ) 1
 AC7698  ELLIP H (04/08/97)  -26.092  (m)                       GP(       ) 3 1
 AC7698  NAVD 88 (04/08/97)    7.0    (m)  GEOID93  model used  GPS OBS        
 AC7698
 AC7698.Superseded values are not recommended for survey control.
 AC7698
 AC7698.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7698.See file dsdata.pdf to determine how the superseded data were derived.
 AC7698
 AC7698_MARKER: DD = SURVEY DISK
 AC7698_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7698_STAMPING: NO. GIS-15 1995
 AC7698_MARK LOGO: MD-005
 AC7698_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7698_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7698+STABILITY: SURFACE MOTION
 AC7698_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7698+SATELLITE: SATELLITE OBSERVATIONS - October 20, 2012
 AC7698
 AC7698  HISTORY     - Date     Condition        Report By
 AC7698  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7698  HISTORY     - 20011018 GOOD             DMW
 AC7698  HISTORY     - 20030320 GOOD             DMW
 AC7698  HISTORY     - 20121020 GOOD             USPSQD
 AC7698
 AC7698                          STATION DESCRIPTION
 AC7698
 AC7698'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7698'STATION IS LOCATED ABOUT 12.5 MI (20.1 KM) NORTHEAST OF THE CENTER OF
 AC7698'BALTIMORE AND ABOUT 4.0 MI (6.4 KM) EAST OF GLEN L. MARTIN STATE
 AC7698'AIRPORT NEAR THE ENTRANCE TO ABERDEEN PROVING GROUNDS GRACES QUARTERS
 AC7698'AREA. TO REACH STATION FROM THE WHITE MARSH BLVD (ROUTE 43) OVERPASS
 AC7698'OVER I-95 GO EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01 KM) TO ROUTE
 AC7698'40 (PULASKI HIGHWAY). TURN RIGHT AND GO EAST ON RT 40 FOR 0.6 MI (1.0
 AC7698'KM) TO EBENEZER ROAD. TURN RIGHT AND GO EAST ON EBENEZER RD AND GRACES
 AC7698'QUARTERS RD (EBENEZER TURNS INTO GRACES QUARTERS) FOR 4.45 MI (7.16
 AC7698'KM) TO THE ENTRANCE TO GUNPOWDER FALLS STATE PARK. CONTINUE ON GRACES
 AC7698'QUARTERS RD THROUGH THE PARK FOR 0.4 MI (0.6 KM) TO THE ENTRANCE GATE
 AC7698'TO THE PROVING GROUNDS AND THE STATION ON THE LEFT. STATION MARK IS
 AC7698'SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AC7698'THE GROUND. IT IS 66.75 FT (20.35 M) NORTHEAST OF POWER POLE NO.
 AC7698'485135, 41.30 FT (12.59 M) NORTH OF THE NORTH GATE POST OF ENTRANCE TO
 AC7698'THE PROVING GROUNDS, 17.85 NORTHWEST OF A CHAIN LINK FENCE, 12.70 FT
 AC7698'(3.87 M) SOUTHWEST OF AN ELECTRIC PANEL BOX AND 4.0 FT (1.2 M)
 AC7698'SOUTHEAST OF A LINE OF WOODEN POSTS AROUND A PARKING LOT.
 AC7698
 AC7698                          STATION RECOVERY (2001)
 AC7698
 AC7698'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (JMS)
 AC7698'RECOVERED IN GOOD CONDITION.
 AC7698
 AC7698                          STATION RECOVERY (2003)
 AC7698
 AC7698'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (JMS)
 AC7698'RECOVERED IN GOOD CONDITION.
 AC7698
 AC7698                          STATION RECOVERY (2012)
 AC7698
 AC7698'RECOVERY NOTE BY US POWER SQUADRON 2012
 AC7698'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6402 ***********************************************************************
 DG6402  DESIGNATION -  GIS 15
 DG6402  PID         -  DG6402
 DG6402  STATE/COUNTY-  MD/TALBOT
 DG6402  COUNTRY     -  US
 DG6402  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6402
 DG6402                         *CURRENT SURVEY CONTROL
 DG6402  ______________________________________________________________________
 DG6402* NAD 83(1986) POSITION- 38 47 18.87   (N) 076 13 40.93   (W)   HD_HELD1
 DG6402* NAVD 88 ORTHO HEIGHT -     3.082 (meters)       10.11  (feet) ADJUSTED
 DG6402  ______________________________________________________________________
 DG6402  GEOID HEIGHT    -        -34.314 (meters)                     GEOID18
 DG6402  DYNAMIC HEIGHT  -          3.080 (meters)       10.11  (feet) COMP
 DG6402  MODELED GRAVITY -    980,046.4   (mgal)                       NAVD 88
 DG6402
 DG6402  VERT ORDER      -  SECOND    CLASS I
 DG6402
 DG6402.The horizontal coordinates were determined by differentially corrected
 DG6402.hand held GPS observations or other comparable positioning techniques
 DG6402.and have an estimated accuracy of +/- 3 meters.
 DG6402
 DG6402.The orthometric height was determined by differential leveling and
 DG6402.adjusted by the NATIONAL GEODETIC SURVEY
 DG6402.in September 2004.
 DG6402
 DG6402.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6402.GEOID18 height accuracy estimate available here.
 DG6402
 DG6402.Click photographs - Photos may exist for this station.
 DG6402
 DG6402.The dynamic height is computed by dividing the NAVD 88
 DG6402.geopotential number by the normal gravity value computed on the
 DG6402.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6402.degrees latitude (g = 980.6199 gals.).
 DG6402
 DG6402.The modeled gravity was interpolated from observed gravity values.
 DG6402
 DG6402;                    North         East    Units  Estimated Accuracy
 DG6402;SPC MD       -   124,819.9     467,066.9     MT  (+/- 3 meters HH1 GPS) 
 DG6402
 DG6402_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9334494031(NAD 83)
 DG6402
 DG6402                          SUPERSEDED SURVEY CONTROL
 DG6402
 DG6402.No superseded survey control is available for this station.
 DG6402
 DG6402_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6402_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6402_STAMPING: NO GIS 15 1995
 DG6402_MARK LOGO: MD1370
 DG6402_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6402_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6402+STABILITY: SURFACE MOTION
 DG6402_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6402+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6402
 DG6402  HISTORY     - Date     Condition        Report By
 DG6402  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6402  HISTORY     - 19991213 GOOD             MDSHA
 DG6402
 DG6402                          STATION DESCRIPTION
 DG6402
 DG6402'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6402'THE MARK IS LOCATED IN THE TOWN OF SAINT MICHAELS.  TO REACH THE MARK
 DG6402'FROM THE POST OFFICE IN SAINT MICHAELS, PROCEED NORTH ALONG MARYLAND
 DG6402'STATE HIGHWAY 33 FOR 0.3 MILES (0.5 KM) TO DODSON STREET. TURN LEFT
 DG6402'AND PROCEED WEST ALONG DODSON STREET FOR 0.15 MILES (0.24 KM) TO PERRY
 DG6402'STREET LEADING NORTH AND THE MARK ON THE RIGHT. IT IS 37.7 FEET (11.5
 DG6402'M) SOUTHWEST OF THE SOUTHWEST CORNER OF A BLOCK AND BRICK BUILDING,
 DG6402'47.0 FEET (14.3 M) EAST AND ACROSS PERRY STREET FROM A FIRE HYDRANT,
 DG6402'39.0 FEET (11.9 M) NORTH-NORTHEAST AND ACROSS DODSON STREET FROM POWER
 DG6402'POLE NUMBER 29038-08721, 33.1 FEET (10.1 M) NORTHEAST OF THE JUNCTION
 DG6402'OF THE PERRY STREET AND DODSON STREET AND 31.4 FT (9.6 M)
 DG6402'WEST-NORTHWEST OF THE CENTER OF A STORM DRAIN MANHOLE COVER.  IT IS A
 DG6402'TOSM DISK SET IN THE TOP OF A 7-INCH (18 CM) ROUND CONCRETE POST FLUSH
 DG6402'WITH THE LAWN AND ABOUT 1 FOOT (0.3 M) HIGHER THAN THE LEVEL OF THE
 DG6402'ROADS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7699 ***********************************************************************
 AC7699  DESIGNATION -  GIS 16
 AC7699  PID         -  AC7699
 AC7699  STATE/COUNTY-  MD/BALTIMORE
 AC7699  COUNTRY     -  US
 AC7699  USGS QUAD   -  EDGEWOOD (2016)
 AC7699
 AC7699                         *CURRENT SURVEY CONTROL
 AC7699  ______________________________________________________________________
 AC7699* NAD 83(2011) POSITION- 39 22 32.89669(N) 076 22 13.65649(W)   ADJUSTED
 AC7699* NAD 83(2011) ELLIP HT-   -31.878 (meters)        (06/27/12)   ADJUSTED
 AC7699* NAD 83(2011) EPOCH   -  2010.00
 AC7699* NAVD 88 ORTHO HEIGHT -     1.207 (meters)        3.96  (feet) ADJUSTED
 AC7699  ______________________________________________________________________
 AC7699  GEOID HEIGHT    -        -33.072 (meters)                     GEOID18
 AC7699  NAD 83(2011) X  -  1,163,356.396 (meters)                     COMP
 AC7699  NAD 83(2011) Y  - -4,797,914.352 (meters)                     COMP
 AC7699  NAD 83(2011) Z  -  4,024,634.139 (meters)                     COMP
 AC7699  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 AC7699  DYNAMIC HEIGHT  -          1.206 (meters)        3.96  (feet) COMP
 AC7699  MODELED GRAVITY -    980,103.1   (mgal)                       NAVD 88
 AC7699
 AC7699  VERT ORDER      -  THIRD
 AC7699
 AC7699  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7699  Standards:
 AC7699         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7699            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7699  -------------------------------------------------------------------
 AC7699  NETWORK    0.65   1.47           0.27   0.26   0.75      0.13718523
 AC7699  -------------------------------------------------------------------
 AC7699  Click here for local accuracies and other accuracy information.
 AC7699
 AC7699.The horizontal coordinates were established by GPS observations
 AC7699.and adjusted by the National Geodetic Survey in June 2012.
 AC7699
 AC7699.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7699.been affixed to the stable North American tectonic plate. See 
 AC7699.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7699
 AC7699.The horizontal coordinates are valid at the epoch date displayed above
 AC7699.which is a decimal equivalence of Year/Month/Day.
 AC7699
 AC7699.The orthometric height was determined by differential leveling and
 AC7699.adjusted by the NATIONAL GEODETIC SURVEY
 AC7699.in February 1998.
 AC7699
 AC7699.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7699.GEOID18 height accuracy estimate available here.
 AC7699
 AC7699.Click photographs - Photos may exist for this station.
 AC7699
 AC7699.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7699
 AC7699.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7699
 AC7699.The ellipsoidal height was determined by GPS observations
 AC7699.and is referenced to NAD 83.
 AC7699
 AC7699.The dynamic height is computed by dividing the NAVD 88
 AC7699.geopotential number by the normal gravity value computed on the
 AC7699.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7699.degrees latitude (g = 980.6199 gals.).
 AC7699
 AC7699.The modeled gravity was interpolated from observed gravity values.
 AC7699
 AC7699. The following values were computed from the NAD 83(2011) position.
 AC7699
 AC7699;                    North         East     Units Scale Factor Converg.
 AC7699;SPC MD       -   189,913.327   454,244.029   MT  0.99998786   +0 23 42.4
 AC7699;SPC MD       -   623,073.97  1,490,298.95   sFT  0.99998786   +0 23 42.4
 AC7699;UTM  18      - 4,359,377.078   381,957.541   MT  0.99977156   -0 52 10.3
 AC7699
 AC7699!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7699!SPC MD       -   1.00000500  x   0.99998786  =   0.99999286
 AC7699!UTM  18      -   1.00000500  x   0.99977156  =   0.99977656
 AC7699
 AC7699_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8195759377(NAD 83)
 AC7699
 AC7699                          SUPERSEDED SURVEY CONTROL
 AC7699
 AC7699  NAD 83(2007)-  39 22 32.89693(N)    076 22 13.65720(W) AD(2002.00) 0
 AC7699  ELLIP H (02/10/07)  -31.859  (m)                       GP(2002.00)    
 AC7699  ELLIP H (08/30/02)  -31.844  (m)                       GP(       ) 4 2
 AC7699  NAD 83(1991)-  39 22 32.89712(N)    076 22 13.65708(W) AD(       ) 1
 AC7699  ELLIP H (04/08/97)  -31.839  (m)                       GP(       ) 3 1
 AC7699  NAVD 88 (04/08/97)    1.2    (m)  GEOID93  model used  GPS OBS        
 AC7699
 AC7699.Superseded values are not recommended for survey control.
 AC7699
 AC7699.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7699.See file dsdata.pdf to determine how the superseded data were derived.
 AC7699
 AC7699_MARKER: DD = SURVEY DISK
 AC7699_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7699_STAMPING: NO. GIS-16 1995
 AC7699_MARK LOGO: MD-005
 AC7699_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7699_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7699+STABILITY: SURFACE MOTION
 AC7699_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7699+SATELLITE: SATELLITE OBSERVATIONS - October 20, 2012
 AC7699
 AC7699  HISTORY     - Date     Condition        Report By
 AC7699  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7699  HISTORY     - 20050529 GOOD             USPSQD
 AC7699  HISTORY     - 20060803 GOOD             GPSSS
 AC7699  HISTORY     - 20121020 GOOD             USPSQD
 AC7699
 AC7699                          STATION DESCRIPTION
 AC7699
 AC7699'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7699'STATION IS LOCATED ABOUT 12.0 MI (19.3 KM) NORTHEAST OF THE CENTER OF
 AC7699'BALTIMORE AND ABOUT 3.5 MI (5.6 KM) NORTHEAST OF GLEN L. MARTIN STATE
 AC7699'AIRPORT AT HAREWOOD. TO REACH STATION FROM THE WHITE MARSH BLVD (ROUTE
 AC7699'43) OVERPASS OVER I-95 GO EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01
 AC7699'KM) TO ROUTE 40 (PULASKI HIGHWAY). TURN RIGHT AND GO EAST ON ROUTE 40
 AC7699'FOR 0.6 MI (1.0 KM) TO EBENEZER ROAD. TURN RIGHT AND GO EAST ON
 AC7699'EBENEZER RD FOR 3.45 MI (5.55 KM) TO HAREWOOD ROAD. TURN LEFT AND GO
 AC7699'NORTH ON HAREWOOD RD FOR 0.7 MI (1.1 KM) TO UNIVERSITY DRIVE. TURN
 AC7699'LEFT AND GO WEST ON UNIVERSITY DRIVE FOR 0.6 MI (1.0 KM) TO THE
 AC7699'INTERSECTION WITH COMMUNITY DRIVE AND STATION ON THE RIGHT. STATION
 AC7699'MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 AC7699'WITH THE GROUND. IT IS 45.30 FT (13.81 M) SOUTHWEST OF THE SOUTHWEST
 AC7699'CORNER A BRICK HOUSE NO. 12915, 22.72 FT (6.93 M) SOUTHEAST OF THE
 AC7699'CENTERLINE OF COMMUNITY DRIVE, 15.25 FT (4.65 M) SOUTHEAST OF A WATER
 AC7699'VALVE MANHOLE, 50.25 FT (15.316 M) EAST OF POWER POLE NO.32758, 19.15
 AC7699'FT (5.84 M) NORTHEAST OF THE CENTERLINE OF UNIVERSITY DRIVE AND 96.63
 AC7699'FT (29.45 M) NORTHWEST OF A FIRE HYDRANT.
 AC7699
 AC7699                          STATION RECOVERY (2005)
 AC7699
 AC7699'RECOVERY NOTE BY US POWER SQUADRON 2005 (JJH)
 AC7699'RECOVERED IN GOOD CONDITION.
 AC7699
 AC7699                          STATION RECOVERY (2006)
 AC7699
 AC7699'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (KK)
 AC7699'RECOVERED BY KEVIN AND RYAN OF DIETZ SURVEYING.
 AC7699
 AC7699                          STATION RECOVERY (2012)
 AC7699
 AC7699'RECOVERY NOTE BY US POWER SQUADRON 2012
 AC7699'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6419 ***********************************************************************
 DG6419  DESIGNATION -  GIS 16
 DG6419  PID         -  DG6419
 DG6419  STATE/COUNTY-  MD/TALBOT
 DG6419  COUNTRY     -  US
 DG6419  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6419
 DG6419                         *CURRENT SURVEY CONTROL
 DG6419  ______________________________________________________________________
 DG6419* NAD 83(1986) POSITION- 38 46 49.80   (N) 076 13 04.85   (W)   HD_HELD1
 DG6419* NAVD 88 ORTHO HEIGHT -     2.306 (meters)        7.57  (feet) ADJUSTED
 DG6419  ______________________________________________________________________
 DG6419  GEOID HEIGHT    -        -34.356 (meters)                     GEOID18
 DG6419  DYNAMIC HEIGHT  -          2.305 (meters)        7.56  (feet) COMP
 DG6419  MODELED GRAVITY -    980,044.5   (mgal)                       NAVD 88
 DG6419
 DG6419  VERT ORDER      -  SECOND    CLASS I
 DG6419
 DG6419.The horizontal coordinates were determined by differentially corrected
 DG6419.hand held GPS observations or other comparable positioning techniques
 DG6419.and have an estimated accuracy of +/- 3 meters.
 DG6419
 DG6419.The orthometric height was determined by differential leveling and
 DG6419.adjusted by the NATIONAL GEODETIC SURVEY
 DG6419.in September 2004.
 DG6419
 DG6419.No vertical observational check was made to the station.
 DG6419
 DG6419.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6419.GEOID18 height accuracy estimate available here.
 DG6419
 DG6419.Click photographs - Photos may exist for this station.
 DG6419
 DG6419.The dynamic height is computed by dividing the NAVD 88
 DG6419.geopotential number by the normal gravity value computed on the
 DG6419.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6419.degrees latitude (g = 980.6199 gals.).
 DG6419
 DG6419.The modeled gravity was interpolated from observed gravity values.
 DG6419
 DG6419;                    North         East    Units  Estimated Accuracy
 DG6419;SPC MD       -   123,931.0     467,945.3     MT  (+/- 3 meters HH1 GPS) 
 DG6419
 DG6419_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9420393123(NAD 83)
 DG6419
 DG6419                          SUPERSEDED SURVEY CONTROL
 DG6419
 DG6419.No superseded survey control is available for this station.
 DG6419
 DG6419_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6419_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6419_STAMPING: NO GIS 16 1995
 DG6419_MARK LOGO: MD1370
 DG6419_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6419_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6419+STABILITY: SURFACE MOTION
 DG6419_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6419+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6419
 DG6419  HISTORY     - Date     Condition        Report By
 DG6419  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6419  HISTORY     - 19991213 GOOD             MDSHA
 DG6419  HISTORY     - 20060328 GOOD             USPSQD
 DG6419
 DG6419                          STATION DESCRIPTION
 DG6419
 DG6419'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6419'THE MARK IS LOCATED IN THE TOWN OF ST. MICHAELS, AT THE SAINT MICHAELS
 DG6419'HIGH SCHOOL.  TO REACH THE MARK FROM THE POST OFFICE IN ST. MICHAELS,
 DG6419'PROCEED SOUTHEAST ALONG MARYLAND STATE HIGHWAY 33 FOR 0.3 MILES (0.5
 DG6419'KM) TO SEYMOUR AVENUE.  TURN LEFT AND PROCEED NORTHEAST ALONG SEYMOUR
 DG6419'AVENUE FOR 0.15 MILES (0.24 KM) TO MEADOW STREET ON THE LEFT AND THE
 DG6419'ENTRANCE TO THE HIGH SCHOOL AND THE MARK ON THE RIGHT.  IT IS 64.1
 DG6419'FEET (19.5 M) EAST-NORTHEAST OF THE NORTHEAST CORNER OF THE ELEMENTARY
 DG6419'SCHOOL, 35.7 FEET (10.9 M) NORTH-NORTHEAST OF A METAL LIGHT POLE, 99.6
 DG6419'FEET (30.4 M) SOUTH OF A FIRE HYDRANT LOCATED ON THE SOUTH SIDE OF
 DG6419'SEYMOUR AVENUE AND 76.1 FEET (23.2 M) WEST-SOUTHWEST OF THE CENTER OF
 DG6419'THE ENTRANCE TO THE HIGH SCHOOL.  IT IS A TOSM DISK SET IN THE TOP OF
 DG6419'A 7 INCH (18 CM) ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND.
 DG6419
 DG6419                          STATION RECOVERY (2006)
 DG6419
 DG6419'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6419'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4095 ***********************************************************************
 DS4095  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4095  DESIGNATION -  GIS 169
 DS4095  PID         -  DS4095
 DS4095  STATE/COUNTY-  MD/BALTIMORE
 DS4095  COUNTRY     -  US
 DS4095  USGS QUAD   -  COCKEYSVILLE (2016)
 DS4095
 DS4095                         *CURRENT SURVEY CONTROL
 DS4095  ______________________________________________________________________
 DS4095* NAD 83(2011) POSITION- 39 24 38.54634(N) 076 43 47.51430(W)   ADJUSTED
 DS4095* NAD 83(2011) ELLIP HT-    86.213 (meters)        (08/29/25)   ADJUSTED
 DS4095* NAD 83(2011) EPOCH   -  2010.00
 DS4095* NAVD 88 ORTHO HEIGHT -   118.48  (meters)      388.7   (feet) GPS OBS
 DS4095  ______________________________________________________________________
 DS4095  GEOID HEIGHT    -        -32.266 (meters)                     GEOID18
 DS4095  NAD 83(2011) X  -  1,132,693.799 (meters)                     COMP
 DS4095  NAD 83(2011) Y  - -4,802,812.663 (meters)                     COMP
 DS4095  NAD 83(2011) Z  -  4,027,703.729 (meters)                     COMP
 DS4095  LAPLACE CORR    -         -4.45  (seconds)                    DEFLEC18
 DS4095
 DS4095  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4095  Standards:
 DS4095         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4095            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4095  -------------------------------------------------------------------
 DS4095  NETWORK    0.49   0.98           0.22   0.18   0.50     -0.03102874
 DS4095  -------------------------------------------------------------------
 DS4095  Click here for local accuracies and other accuracy information.
 DS4095
 DS4095.The horizontal coordinates were established by GPS observations
 DS4095.and adjusted by the MD DOT HIGHWAY ADMIN in August 2025.
 DS4095
 DS4095.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4095.frame has been affixed to the stable North American tectonic plate 
 DS4095
 DS4095.The horizontal coordinates are valid at the epoch date displayed above
 DS4095.which is a decimal equivalence of Year/Month/Day.
 DS4095
 DS4095.The orthometric height was determined by GPS observations and a
 DS4095.high-resolution geoid model using precise GPS observation and
 DS4095.processing techniques.
 DS4095
 DS4095.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4095.GEOID18 height accuracy estimate available here.
 DS4095
 DS4095.Click photographs - Photos may exist for this station.
 DS4095
 DS4095.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4095
 DS4095.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4095
 DS4095.The ellipsoidal height was determined by GPS observations
 DS4095.and is referenced to NAD 83.
 DS4095
 DS4095. The following values were computed from the NAD 83(2011) position.
 DS4095
 DS4095;                    North         East     Units Scale Factor Converg.
 DS4095;SPC MD       -   193,635.675   423,264.742   MT  0.99999336   +0 10 10.4
 DS4095;SPC MD       -   635,286.38  1,388,661.07   sFT  0.99999336   +0 10 10.4
 DS4095;UTM  18      - 4,363,782.382   351,073.339   MT  0.99987308   -1 05 54.4
 DS4095
 DS4095!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4095!SPC MD       -   0.99998647  x   0.99999336  =   0.99997983
 DS4095!UTM  18      -   0.99998647  x   0.99987308  =   0.99985956
 DS4095
 DS4095_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5107363782(NAD 83)
 DS4095
 DS4095                          SUPERSEDED SURVEY CONTROL
 DS4095
 DS4095.No superseded survey control is available for this station.
 DS4095
 DS4095_MARKER: DD = SURVEY DISK
 DS4095_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS4095_STAMPING: G.I.S. NO. 169
 DS4095_MARK LOGO: MD-005
 DS4095_PROJECTION: FLUSH
 DS4095_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS4095+STABILITY: SURFACE MOTION
 DS4095_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4095+SATELLITE: SATELLITE OBSERVATIONS - November 20, 2024
 DS4095
 DS4095  HISTORY     - Date     Condition        Report By
 DS4095  HISTORY     - 19990101 MONUMENTED       MD-005
 DS4095  HISTORY     - 20241120 GOOD             MDSHA
 DS4095
 DS4095                          STATION DESCRIPTION
 DS4095
 DS4095'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 DS4095'THE MARK IS LOCATED ABOUT 6.9 MI (11.1 KM) WEST OF TOWSON, 6.7 MI
 DS4095'(10.8 KM) SOUTHEAST OF REISTERSTOWN AND 6.7 MI (10.8 KM) SOUTHWEST OF
 DS4095'COCKEYSVILLE.
 DS4095'
 DS4095'TO REACH THE MARK FROM THE INTERSECTION OF REISTERSTOWN ROAD (MD140)
 DS4095'AND GREENSPRING VALLEY ROAD (MD130) PROCEED EAST ON GREENSPRING VALLEY
 DS4095'ROAD FOR 2.77 KM (1.72 MI) TO THE INTERSECTION WITH PARK HEIGHTS
 DS4095'AVENUE (MD 129).  TURN RIGHT ON PARK HEIGHTS AVENUE AND PROCEED SOUTH
 DS4095'FOR 0.04 KM (0.02 MI) TO THE MARK ON THE LEFT.     THE MARK IS 140.5
 DS4095'FT (42.8 M) SOUTHWEST OF A TRAFFIC SIGNAL POLE, 109.1 FT (33.3 M)
 DS4095'SOUTH OF A STREET SIGN, 28.2 FT (8.6 M) EAST OF THE CENTERLINE OF
 DS4095'STATE ROUTE MD 129, 15.3 FT (4.7 M) NORTH OF THE CENTER OF A ELECTRIC
 DS4095'HAND BOX, 5.4 FT (1.6 M) NORTH-NORTHEAST OF THE END OF A METAL GUARD
 DS4095'RAIL SET IN THE TOP OF A 10-IN (25 CM) ROUND CONCRETE POST AND ABOUT 1
 DS4095'FT (0.3 M) LOWER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7700 ***********************************************************************
 AC7700  DESIGNATION -  GIS 17
 AC7700  PID         -  AC7700
 AC7700  STATE/COUNTY-  MD/BALTIMORE
 AC7700  COUNTRY     -  US
 AC7700  USGS QUAD   -  GUNPOWDER NECK (2016)
 AC7700
 AC7700                         *CURRENT SURVEY CONTROL
 AC7700  ______________________________________________________________________
 AC7700* NAD 83(2011) POSITION- 39 22 22.57084(N) 076 20 21.99901(W)   ADJUSTED
 AC7700* NAD 83(2011) ELLIP HT-   -29.879 (meters)        (06/27/12)   ADJUSTED
 AC7700* NAD 83(2011) EPOCH   -  2010.00
 AC7700* NAVD 88 ORTHO HEIGHT -     3.257 (meters)       10.69  (feet) ADJUSTED
 AC7700  ______________________________________________________________________
 AC7700  GEOID HEIGHT    -        -33.123 (meters)                     GEOID18
 AC7700  NAD 83(2011) X  -  1,166,001.559 (meters)                     COMP
 AC7700  NAD 83(2011) Y  - -4,797,481.691 (meters)                     COMP
 AC7700  NAD 83(2011) Z  -  4,024,389.245 (meters)                     COMP
 AC7700  LAPLACE CORR    -         -2.95  (seconds)                    DEFLEC18
 AC7700  DYNAMIC HEIGHT  -          3.255 (meters)       10.68  (feet) COMP
 AC7700  MODELED GRAVITY -    980,104.8   (mgal)                       NAVD 88
 AC7700
 AC7700  VERT ORDER      -  THIRD
 AC7700
 AC7700  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7700  Standards:
 AC7700         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7700            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7700  -------------------------------------------------------------------
 AC7700  NETWORK    0.62   1.31           0.28   0.22   0.67      0.01554520
 AC7700  -------------------------------------------------------------------
 AC7700  Click here for local accuracies and other accuracy information.
 AC7700
 AC7700.The horizontal coordinates were established by GPS observations
 AC7700.and adjusted by the National Geodetic Survey in June 2012.
 AC7700
 AC7700.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7700.been affixed to the stable North American tectonic plate. See 
 AC7700.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7700
 AC7700.The horizontal coordinates are valid at the epoch date displayed above
 AC7700.which is a decimal equivalence of Year/Month/Day.
 AC7700
 AC7700.The orthometric height was determined by differential leveling and
 AC7700.adjusted by the NATIONAL GEODETIC SURVEY
 AC7700.in February 1998.
 AC7700
 AC7700.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7700.GEOID18 height accuracy estimate available here.
 AC7700
 AC7700.Click photographs - Photos may exist for this station.
 AC7700
 AC7700.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7700
 AC7700.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7700
 AC7700.The ellipsoidal height was determined by GPS observations
 AC7700.and is referenced to NAD 83.
 AC7700
 AC7700.The dynamic height is computed by dividing the NAVD 88
 AC7700.geopotential number by the normal gravity value computed on the
 AC7700.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7700.degrees latitude (g = 980.6199 gals.).
 AC7700
 AC7700.The modeled gravity was interpolated from observed gravity values.
 AC7700
 AC7700. The following values were computed from the NAD 83(2011) position.
 AC7700
 AC7700;                    North         East     Units Scale Factor Converg.
 AC7700;SPC MD       -   189,613.778   456,918.765   MT  0.99998743   +0 24 52.5
 AC7700;SPC MD       -   622,091.20  1,499,074.31   sFT  0.99998743   +0 24 52.5
 AC7700;UTM  18      - 4,359,018.655   384,624.429   MT  0.99976390   -0 50 59.2
 AC7700
 AC7700!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7700!SPC MD       -   1.00000469  x   0.99998743  =   0.99999212
 AC7700!UTM  18      -   1.00000469  x   0.99976390  =   0.99976859
 AC7700
 AC7700_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8462459018(NAD 83)
 AC7700
 AC7700                          SUPERSEDED SURVEY CONTROL
 AC7700
 AC7700  NAD 83(2007)-  39 22 22.57108(N)    076 20 21.99979(W) AD(2002.00) 0
 AC7700  ELLIP H (02/10/07)  -29.861  (m)                       GP(2002.00)    
 AC7700  ELLIP H (08/30/02)  -29.845  (m)                       GP(       ) 4 2
 AC7700  NAD 83(1991)-  39 22 22.57120(N)    076 20 21.99973(W) AD(       ) 1
 AC7700  ELLIP H (04/08/97)  -29.837  (m)                       GP(       ) 3 1
 AC7700  NAVD 88 (04/08/97)    3.2    (m)  GEOID93  model used  GPS OBS        
 AC7700
 AC7700.Superseded values are not recommended for survey control.
 AC7700
 AC7700.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7700.See file dsdata.pdf to determine how the superseded data were derived.
 AC7700
 AC7700_MARKER: DD = SURVEY DISK
 AC7700_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7700_STAMPING: NO. GIS-17 1995
 AC7700_MARK LOGO: MD-005
 AC7700_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7700_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7700+STABILITY: SURFACE MOTION
 AC7700_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7700+SATELLITE: SATELLITE OBSERVATIONS - October 20, 2012
 AC7700
 AC7700  HISTORY     - Date     Condition        Report By
 AC7700  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7700  HISTORY     - 20080228 GOOD             DEWDAV
 AC7700  HISTORY     - 20090824 GOOD             MD-005
 AC7700  HISTORY     - 20121020 GOOD             USPSQD
 AC7700
 AC7700                          STATION DESCRIPTION
 AC7700
 AC7700'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7700'STATION IS LOCATED ABOUT 13.5 MI (21.7 KM) NORTHEAST OF THE CENTER OF
 AC7700'BALTIMORE AND ABOUT 4.5 MI (7.2 KM) NORTHEAST OF GLEN L. MARTIN STATE
 AC7700'AIRPORT AT HAREWOOD. TO REACH STATION FROM THE WHITE MARSH BLVD (ROUTE
 AC7700'43) OVERPASS OVER I-95 GO EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01
 AC7700'KM) TO ROUTE 40 (PULASKI HIGHWAY). TURN RIGHT AND GO EAST ON ROUTE 40
 AC7700'FOR 0.6 MI (1.0 KM) TO EBENEZER ROAD. TURN RIGHT AND GO EAST ON
 AC7700'EBENEZER ROAD FOR 3.95 MI (6.36 KM) TO CUNNINGHILL COVE ROAD. TURN
 AC7700'LEFT AND GO NORTHERLY ON CUNNINGHILL COVE RD FOR 0.8 MI (1.3 KM) TO
 AC7700'GUNPOWDER RD. TURN RIGHT ON GUNPOWDER RD AND GO 0.7 MI (1.13 KM) TO
 AC7700'EAST GREENBANK ROAD. TURN LEFT ON EAST GREENBANK ROAD AND GO 0.5 MI
 AC7700'(0.8 KM) TO THE INTERSECTION WITH GREEN BANK ROAD AND STATION ON THE
 AC7700'LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AC7700'MONUMENT SET FLUSH WITH THE GROUND. IT IS 58.18 FT (17.73 M) SOUTHEAST
 AC7700'OF OF POWER POLE NO.189522, 12.45 FT (3.79 M) SOUTHEAST OF A FIRE
 AC7700'HYDRANT, 21.53 FT (6.56 M) SOUTH OF THE CENTERLINE OF GREENBANK RD,
 AC7700'21.47 FT (6.54 M) SOUTHWEST OF A WATER VALVE MANHOLE, 4.70 SOUTHWEST
 AC7700'OF THE SOUTH END OF A CONCRETE STORM DRAIN INLET, 46.40 FT (14.14 M)
 AC7700'SOUTHWEST OF POWER POLE NO.215088 AND 18.92 FT (5.77 M) WEST OF THE
 AC7700'CENTERLINE OF EAST GREENBANK RD.
 AC7700
 AC7700                          STATION RECOVERY (2008)
 AC7700
 AC7700'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7700'RECOVERED IN GOOD CONDITION.
 AC7700
 AC7700                          STATION RECOVERY (2009)
 AC7700
 AC7700'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AC7700'RECOVERED IN GOOD CONDITION.
 AC7700
 AC7700                          STATION RECOVERY (2012)
 AC7700
 AC7700'RECOVERY NOTE BY US POWER SQUADRON 2012
 AC7700'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6403 ***********************************************************************
 DG6403  DESIGNATION -  GIS 17
 DG6403  PID         -  DG6403
 DG6403  STATE/COUNTY-  MD/TALBOT
 DG6403  COUNTRY     -  US
 DG6403  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6403
 DG6403                         *CURRENT SURVEY CONTROL
 DG6403  ______________________________________________________________________
 DG6403* NAD 83(1986) POSITION- 38 47 35.62   (N) 076 13 31.55   (W)   HD_HELD1
 DG6403* NAVD 88 ORTHO HEIGHT -     2.998 (meters)        9.84  (feet) ADJUSTED
 DG6403  ______________________________________________________________________
 DG6403  GEOID HEIGHT    -        -34.310 (meters)                     GEOID18
 DG6403  DYNAMIC HEIGHT  -          2.997 (meters)        9.83  (feet) COMP
 DG6403  MODELED GRAVITY -    980,046.8   (mgal)                       NAVD 88
 DG6403
 DG6403  VERT ORDER      -  SECOND    CLASS I
 DG6403
 DG6403.The horizontal coordinates were determined by differentially corrected
 DG6403.hand held GPS observations or other comparable positioning techniques
 DG6403.and have an estimated accuracy of +/- 3 meters.
 DG6403
 DG6403.The orthometric height was determined by differential leveling and
 DG6403.adjusted by the NATIONAL GEODETIC SURVEY
 DG6403.in September 2004.
 DG6403
 DG6403.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6403.GEOID18 height accuracy estimate available here.
 DG6403
 DG6403.Click photographs - Photos may exist for this station.
 DG6403
 DG6403.The dynamic height is computed by dividing the NAVD 88
 DG6403.geopotential number by the normal gravity value computed on the
 DG6403.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6403.degrees latitude (g = 980.6199 gals.).
 DG6403
 DG6403.The modeled gravity was interpolated from observed gravity values.
 DG6403
 DG6403;                    North         East    Units  Estimated Accuracy
 DG6403;SPC MD       -   125,338.3     467,288.9     MT  (+/- 3 meters HH1 GPS) 
 DG6403
 DG6403_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9357794544(NAD 83)
 DG6403
 DG6403                          SUPERSEDED SURVEY CONTROL
 DG6403
 DG6403.No superseded survey control is available for this station.
 DG6403
 DG6403_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6403_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6403_STAMPING: NO GIS 17 1995
 DG6403_MARK LOGO: MD1370
 DG6403_PROJECTION: FLUSH
 DG6403_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6403_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6403+STABILITY: SURFACE MOTION
 DG6403_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6403+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2014
 DG6403
 DG6403  HISTORY     - Date     Condition        Report By
 DG6403  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6403  HISTORY     - 19991213 GOOD             MDSHA
 DG6403  HISTORY     - 20140606 GOOD             RODCON
 DG6403
 DG6403                          STATION DESCRIPTION
 DG6403
 DG6403'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6403'THE MARK IS LOCATED IN THE TOWN OF ST. MICHAELS.  TO REACH THE MARK
 DG6403'FROM THE POST OFFICE IN ST. MICHAELS, PROCEED NORTH ALONG MARYLAND
 DG6403'STATE HIGHWAY 33 FOR 0.65 MILES (1.05 KM) TO PERRY CABIN ROAD LEADING
 DG6403'EAST AND THE MARK ON THE RIGHT.  IT IS 43.8 FEET (13.4 M) EAST OF THE
 DG6403'CENTER LINE OF THE HIGHWAY, 25.3 FEET (7.7 M) NORTH OF THE CENTER LINE
 DG6403'OF PERRY CABIN ROAD, 65.7 FEET (20.0 M) SOUTHWEST OF TELEPHONE POLE
 DG6403'NUMBER 309 AND 13.5 FEET (4.1 M) NORTHWEST OF THE EAST END OF CONCRETE
 DG6403'CURB LOCATED ON THE NORTH SIDE OF PERRY CABIN ROAD.  IT A TOSM DISK
 DG6403'SET IN THE TOP OF A 7-INCH (18 CM) ROUND CONCRETE POST FLUSH WITH THE
 DG6403'GROUND.
 DG6403
 DG6403                          STATION RECOVERY (2014)
 DG6403
 DG6403'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DG6403'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7701 ***********************************************************************
 AC7701  DESIGNATION -  GIS 18
 AC7701  PID         -  AC7701
 AC7701  STATE/COUNTY-  MD/BALTIMORE
 AC7701  COUNTRY     -  US
 AC7701  USGS QUAD   -  GUNPOWDER NECK (2016)
 AC7701
 AC7701                         *CURRENT SURVEY CONTROL
 AC7701  ______________________________________________________________________
 AC7701* NAD 83(2011) POSITION- 39 18 11.00438(N) 076 22 26.33155(W)   ADJUSTED
 AC7701* NAD 83(2011) ELLIP HT-   -32.162 (meters)        (06/27/12)   ADJUSTED
 AC7701* NAD 83(2011) EPOCH   -  2010.00
 AC7701* NAVD 88 ORTHO HEIGHT -     0.929 (meters)        3.05  (feet) ADJUSTED
 AC7701  ______________________________________________________________________
 AC7701  GEOID HEIGHT    -        -33.088 (meters)                     GEOID18
 AC7701  NAD 83(2011) X  -  1,164,267.659 (meters)                     COMP
 AC7701  NAD 83(2011) Y  - -4,802,961.360 (meters)                     COMP
 AC7701  NAD 83(2011) Z  -  4,018,387.507 (meters)                     COMP
 AC7701  LAPLACE CORR    -         -2.24  (seconds)                    DEFLEC18
 AC7701  DYNAMIC HEIGHT  -          0.928 (meters)        3.04  (feet) COMP
 AC7701  MODELED GRAVITY -    980,112.2   (mgal)                       NAVD 88
 AC7701
 AC7701  VERT ORDER      -  THIRD
 AC7701
 AC7701  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7701  Standards:
 AC7701         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7701            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7701  -------------------------------------------------------------------
 AC7701  NETWORK    0.78   2.14           0.35   0.28   1.09     -0.11851739
 AC7701  -------------------------------------------------------------------
 AC7701  Click here for local accuracies and other accuracy information.
 AC7701
 AC7701.The horizontal coordinates were established by GPS observations
 AC7701.and adjusted by the National Geodetic Survey in June 2012.
 AC7701
 AC7701.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7701.been affixed to the stable North American tectonic plate. See 
 AC7701.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7701
 AC7701.The horizontal coordinates are valid at the epoch date displayed above
 AC7701.which is a decimal equivalence of Year/Month/Day.
 AC7701
 AC7701.The orthometric height was determined by differential leveling and
 AC7701.adjusted by the NATIONAL GEODETIC SURVEY
 AC7701.in February 1998.
 AC7701
 AC7701.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7701.GEOID18 height accuracy estimate available here.
 AC7701
 AC7701.Click photographs - Photos may exist for this station.
 AC7701
 AC7701.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7701
 AC7701.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7701
 AC7701.The ellipsoidal height was determined by GPS observations
 AC7701.and is referenced to NAD 83.
 AC7701
 AC7701.The dynamic height is computed by dividing the NAVD 88
 AC7701.geopotential number by the normal gravity value computed on the
 AC7701.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7701.degrees latitude (g = 980.6199 gals.).
 AC7701
 AC7701.The modeled gravity was interpolated from observed gravity values.
 AC7701
 AC7701. The following values were computed from the NAD 83(2011) position.
 AC7701
 AC7701;                    North         East     Units Scale Factor Converg.
 AC7701;SPC MD       -   181,834.961   453,996.046   MT  0.99997760   +0 23 34.5
 AC7701;SPC MD       -   596,570.20  1,489,485.36   sFT  0.99997760   +0 23 34.5
 AC7701;UTM  18      - 4,351,307.846   381,531.508   MT  0.99977280   -0 52 13.5
 AC7701
 AC7701!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7701!SPC MD       -   1.00000505  x   0.99997760  =   0.99998265
 AC7701!UTM  18      -   1.00000505  x   0.99977280  =   0.99977784
 AC7701
 AC7701_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8153151307(NAD 83)
 AC7701
 AC7701                          SUPERSEDED SURVEY CONTROL
 AC7701
 AC7701  NAD 83(2007)-  39 18 11.00464(N)    076 22 26.33233(W) AD(2002.00) 0
 AC7701  ELLIP H (02/10/07)  -32.145  (m)                       GP(2002.00)    
 AC7701  ELLIP H (08/30/02)  -32.133  (m)                       GP(       ) 4 2
 AC7701  NAD 83(1991)-  39 18 11.00442(N)    076 22 26.33186(W) AD(       ) 1
 AC7701  ELLIP H (04/08/97)  -32.179  (m)                       GP(       ) 3 1
 AC7701  NAVD 88 (04/08/97)    0.9    (m)  GEOID93  model used  GPS OBS        
 AC7701
 AC7701.Superseded values are not recommended for survey control.
 AC7701
 AC7701.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7701.See file dsdata.pdf to determine how the superseded data were derived.
 AC7701
 AC7701_MARKER: DD = SURVEY DISK
 AC7701_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7701_STAMPING: NO. GIS-18 1995
 AC7701_MARK LOGO: MD-005
 AC7701_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7701_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7701+STABILITY: SURFACE MOTION
 AC7701_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7701+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2013
 AC7701
 AC7701  HISTORY     - Date     Condition        Report By
 AC7701  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7701  HISTORY     - 20011018 GOOD             DMW
 AC7701  HISTORY     - 20131031 GOOD             USPSQD
 AC7701
 AC7701                          STATION DESCRIPTION
 AC7701
 AC7701'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7701'STATION IS LOCATED ABOUT 11.0 MI (17.7 KM) EAST OF THE CENTER OF
 AC7701'BALTIMORE AND ABOUT 3.0 MI (4.8 KM) SOUTHEAST OF GLEN L. MARTIN STATE
 AC7701'AIRPORT AT MIAMI BEACH. TO REACH STATION FROM THE WHITE MARSH BLVD
 AC7701'(ROUTE 43) OVERPASS OVER I-95 GO EAST ON WHITE MARSH BLVD FOR 1.25 MI
 AC7701'(2.01 KM) TO ROUTE 40 (PULASKI HIGHWAY). TURN RIGHT AND GO EAST ON
 AC7701'ROUTE 40 FOR 0.6 MI (1.0 KM) TO EBENEZER ROAD. TURN RIGHT AND GO EAST
 AC7701'ON EBENEZER ROAD FOR 2.5 MI (4.02 KM) TO EARLS ROAD. TURN RIGHT ON
 AC7701'EARLS ROAD AND GO 1.7 MI (2.7 KM) TO EASTERN AVE. TURN RIGHT ON
 AC7701'EASTERN AVE AND GO 0.1 MI (0.2 KM) TO BOWLEYS QUARTERS ROAD. TURN LEFT
 AC7701'ON BOWLEYS QUARTERS RD AND GO 3.05 MI (4.91 KM) TO WYE ROAD. TURN LEFT
 AC7701'AND GO 0.2 MI (0.3 KM) TO THE INTERSECTION WITH BAY DRIVE AND THE
 AC7701'STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AC7701'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 28.72 FT
 AC7701'(8.75 M) SOUTHWEST OF THE CENTERLINE OF WYE ROAD, 29.54 FT (9.00 M)
 AC7701'WEST OF A WATER VALVE MANHOLE, 48.51 WEST OF POWER POLE NO.295094,
 AC7701'19.60 FT (5.97 M) NORTHWEST OF THE CENTERLINE OF BAY DRIVE, 68.56 FT
 AC7701'(20.90 M) NORTH OF POWER POLE NO. 258560 AND 13.00 FT (3.96 M) NORTH
 AC7701'OF THE CENTER OF A STORM DRAIN INLET.
 AC7701
 AC7701                          STATION RECOVERY (2001)
 AC7701
 AC7701'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (JMS)
 AC7701'RECOVERED IN GOOD CONDITION.
 AC7701
 AC7701                          STATION RECOVERY (2013)
 AC7701
 AC7701'RECOVERY NOTE BY US POWER SQUADRON 2013
 AC7701'MARKER AND SURROUNDINGS WAS COVERED WITH 3 INCHES OF PEBBLES AND
 AC7701'STONES. THE MARKER WILL PROBABLY BE COVERED OVER AGAIN AS TIME GOES
 AC7701'ON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6430 ***********************************************************************
 DG6430  DESIGNATION -  GIS 18
 DG6430  PID         -  DG6430
 DG6430  STATE/COUNTY-  MD/TALBOT
 DG6430  COUNTRY     -  US
 DG6430  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6430
 DG6430                         *CURRENT SURVEY CONTROL
 DG6430  ______________________________________________________________________
 DG6430* NAD 83(1986) POSITION- 38 47 47.26   (N) 076 13 15.70   (W)   HD_HELD1
 DG6430* NAVD 88 ORTHO HEIGHT -     2.984 (meters)        9.79  (feet) ADJUSTED
 DG6430  ______________________________________________________________________
 DG6430  GEOID HEIGHT    -        -34.314 (meters)                     GEOID18
 DG6430  DYNAMIC HEIGHT  -          2.982 (meters)        9.78  (feet) COMP
 DG6430  MODELED GRAVITY -    980,046.9   (mgal)                       NAVD 88
 DG6430
 DG6430  VERT ORDER      -  SECOND    CLASS I
 DG6430
 DG6430.The horizontal coordinates were determined by differentially corrected
 DG6430.hand held GPS observations or other comparable positioning techniques
 DG6430.and have an estimated accuracy of +/- 3 meters.
 DG6430
 DG6430.The orthometric height was determined by differential leveling and
 DG6430.adjusted by the NATIONAL GEODETIC SURVEY
 DG6430.in September 2004.
 DG6430
 DG6430.No vertical observational check was made to the station.
 DG6430
 DG6430.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6430.GEOID18 height accuracy estimate available here.
 DG6430
 DG6430.Click photographs - Photos may exist for this station.
 DG6430
 DG6430.The dynamic height is computed by dividing the NAVD 88
 DG6430.geopotential number by the normal gravity value computed on the
 DG6430.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6430.degrees latitude (g = 980.6199 gals.).
 DG6430
 DG6430.The modeled gravity was interpolated from observed gravity values.
 DG6430
 DG6430;                    North         East    Units  Estimated Accuracy
 DG6430;SPC MD       -   125,700.5     467,668.3     MT  (+/- 3 meters HH1 GPS) 
 DG6430
 DG6430_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9396594898(NAD 83)
 DG6430
 DG6430                          SUPERSEDED SURVEY CONTROL
 DG6430
 DG6430.No superseded survey control is available for this station.
 DG6430
 DG6430_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6430_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6430_STAMPING: NO GIS 18 1995
 DG6430_MARK LOGO: MD1370
 DG6430_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6430_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6430+STABILITY: SURFACE MOTION
 DG6430_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6430+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6430
 DG6430  HISTORY     - Date     Condition        Report By
 DG6430  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6430  HISTORY     - 19991213 GOOD             MDSHA
 DG6430
 DG6430                          STATION DESCRIPTION
 DG6430
 DG6430'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6430'THE MARK IS LOCATED IN THE TOWN OF SAINT MICHAELS.  TO REACH THE MARK
 DG6430'FROM THE POST OFFICE IN SAINT MICHAELS, PROCEED NORTH ALONG MARYLAND
 DG6430'STATE HIGHWAY 33 FOR 0.85 MILES (1.37 KM) TO YACHT CLUB ROAD.  TURN
 DG6430'RIGHT AND PROCEED EAST ALONG YACHT CLUB ROAD FOR 0.3 MILES (0.5 KM) TO
 DG6430'A 90 DEGREE TURN TO THE NORTH AND THE MARK ON THE RIGHT.  IT IS 17.5
 DG6430'FEET (5.3 M) SOUTH-SOUTHEAST OF THE CENTER OF THE ROAD, 12.7 FEET (3.9
 DG6430'M) NORTH-NORTHWEST OF POWER POLE NUMBER 29247-09006, 17.3 FEET (5.3 M)
 DG6430'WEST-SOUTHWEST OF A CONCRETE PROPERTY CORNER, 18.2 FEET (5.5 M)
 DG6430'EAST-NORTHEAST OF THE SOUTH END OF A 12 INCH (30 CM) CONCRETE PIPE
 DG6430'RUNNING UNDER YACHT CLUB ROAD AND 13.0 FEET (4.0 M) NORTHEAST OF THE
 DG6430'SECOND POST FROM THE EAST END OF A POST AND RAIL FENCE.  IT IS A TOSM
 DG6430'DISK SET IN THE TOP OF A 7 INCH (18 CM) ROUND CONCRETE MONUMENT FLUSH
 DG6430'WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7702 ***********************************************************************
 AC7702  DESIGNATION -  GIS 19
 AC7702  PID         -  AC7702
 AC7702  STATE/COUNTY-  MD/BALTIMORE
 AC7702  COUNTRY     -  US
 AC7702  USGS QUAD   -  MIDDLE RIVER (2016)
 AC7702
 AC7702                         *CURRENT SURVEY CONTROL
 AC7702  ______________________________________________________________________
 AC7702* NAD 83(2011) POSITION- 39 20 42.52739(N) 076 23 39.33872(W)   ADJUSTED
 AC7702* NAD 83(2011) ELLIP HT-   -24.920 (meters)        (06/27/12)   ADJUSTED
 AC7702* NAD 83(2011) EPOCH   -  2010.00
 AC7702* NAVD 88 ORTHO HEIGHT -     8.143 (meters)       26.72  (feet) ADJUSTED
 AC7702  ______________________________________________________________________
 AC7702  GEOID HEIGHT    -        -33.054 (meters)                     GEOID18
 AC7702  NAD 83(2011) X  -  1,161,872.307 (meters)                     COMP
 AC7702  NAD 83(2011) Y  - -4,800,500.480 (meters)                     COMP
 AC7702  NAD 83(2011) Z  -  4,022,006.890 (meters)                     COMP
 AC7702  LAPLACE CORR    -         -2.99  (seconds)                    DEFLEC18
 AC7702  DYNAMIC HEIGHT  -          8.139 (meters)       26.70  (feet) COMP
 AC7702  MODELED GRAVITY -    980,107.2   (mgal)                       NAVD 88
 AC7702
 AC7702  VERT ORDER      -  THIRD
 AC7702
 AC7702  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7702  Standards:
 AC7702         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7702            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7702  -------------------------------------------------------------------
 AC7702  NETWORK    0.80   1.72           0.37   0.26   0.88     -0.03034931
 AC7702  -------------------------------------------------------------------
 AC7702  Click here for local accuracies and other accuracy information.
 AC7702
 AC7702.The horizontal coordinates were established by GPS observations
 AC7702.and adjusted by the National Geodetic Survey in June 2012.
 AC7702
 AC7702.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7702.been affixed to the stable North American tectonic plate. See 
 AC7702.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7702
 AC7702.The horizontal coordinates are valid at the epoch date displayed above
 AC7702.which is a decimal equivalence of Year/Month/Day.
 AC7702
 AC7702.The orthometric height was determined by differential leveling and
 AC7702.adjusted by the NATIONAL GEODETIC SURVEY
 AC7702.in February 1998.
 AC7702
 AC7702.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7702.GEOID18 height accuracy estimate available here.
 AC7702
 AC7702.Click photographs - Photos may exist for this station.
 AC7702
 AC7702.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7702
 AC7702.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7702
 AC7702.The ellipsoidal height was determined by GPS observations
 AC7702.and is referenced to NAD 83.
 AC7702
 AC7702.The dynamic height is computed by dividing the NAVD 88
 AC7702.geopotential number by the normal gravity value computed on the
 AC7702.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7702.degrees latitude (g = 980.6199 gals.).
 AC7702
 AC7702.The modeled gravity was interpolated from observed gravity values.
 AC7702
 AC7702. The following values were computed from the NAD 83(2011) position.
 AC7702
 AC7702;                    North         East     Units Scale Factor Converg.
 AC7702;SPC MD       -   186,495.837   452,215.874   MT  0.99998334   +0 22 48.7
 AC7702;SPC MD       -   611,861.76  1,483,644.91   sFT  0.99998334   +0 22 48.7
 AC7702;UTM  18      - 4,356,005.887   379,854.911   MT  0.99977773   -0 53 02.6
 AC7702
 AC7702!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7702!SPC MD       -   1.00000391  x   0.99998334  =   0.99998725
 AC7702!UTM  18      -   1.00000391  x   0.99977773  =   0.99978164
 AC7702
 AC7702_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7985456005(NAD 83)
 AC7702
 AC7702                          SUPERSEDED SURVEY CONTROL
 AC7702
 AC7702  NAD 83(2007)-  39 20 42.52765(N)    076 23 39.33950(W) AD(2002.00) 0
 AC7702  ELLIP H (02/10/07)  -24.902  (m)                       GP(2002.00)    
 AC7702  ELLIP H (08/30/02)  -24.870  (m)                       GP(       ) 4 2
 AC7702  NAD 83(1991)-  39 20 42.52803(N)    076 23 39.33921(W) AD(       ) 1
 AC7702  ELLIP H (04/08/97)  -24.863  (m)                       GP(       ) 3 1
 AC7702  NAVD 88 (04/08/97)    8.1    (m)  GEOID93  model used  GPS OBS        
 AC7702
 AC7702.Superseded values are not recommended for survey control.
 AC7702
 AC7702.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7702.See file dsdata.pdf to determine how the superseded data were derived.
 AC7702
 AC7702_MARKER: DD = SURVEY DISK
 AC7702_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7702_STAMPING: NO. GIS-19 1995
 AC7702_MARK LOGO: MD-005
 AC7702_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7702_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7702+STABILITY: SURFACE MOTION
 AC7702_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7702+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AC7702
 AC7702  HISTORY     - Date     Condition        Report By
 AC7702  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7702  HISTORY     - 19971031 GOOD             DMW
 AC7702  HISTORY     - 20140617 MARK NOT FOUND   JCLS
 AC7702
 AC7702                          STATION DESCRIPTION
 AC7702
 AC7702'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7702'STATION IS LOCATED ABOUT 10.5 MI (16.9 KM) NORTHEAST OF THE CENTER OF
 AC7702'BALTIMORE AND ABOUT 1.5 MI (2.4 KM) NORTHEAST OF GLEN L. MARTIN STATE
 AC7702'AIRPORT AT BOWLEYS QUARTERS. TO REACH STATION FROM THE WHITE MARSH
 AC7702'BLVD (ROUTE 43) OVERPASS OVER I-95 GO EAST ON WHITE MARSH BLVD FOR
 AC7702'1.25 MI (2.01 KM) TO ROUTE 40 (PULASKI HIGHWAY). TURN RIGHT AND GO
 AC7702'EAST ON ROUTE 40 FOR 0.6 MI (1.0 KM) TO EBENEZER ROAD. TURN RIGHT AND
 AC7702'GO EAST ON EBENEZER ROAD FOR 2.5 MI (4.02 KM) TO EARLS ROAD. TURN
 AC7702'RIGHT ON EARLS ROAD AND GO 1.65 MI (2.66 KM) TO STATION ON THE RIGHT,
 AC7702'ABOUT 300 FT (91.4 M) SOUTH OF THE RAILROAD BRIDGE. STATION MARK IS
 AC7702'SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AC7702'THE GROUND. IT IS 43.35 FT (13.21 M) SOUTH OF POWER POLE NO. 110899,
 AC7702'27.45 FT (8.37 M) SOUTHWEST OF THE SOUTH END OF A GUARDRAIL, 20.26 FT
 AC7702'(6.18 M) WEST OF THE CENTERLINE OF EARLS ROAD AND 31.70 FT (9.66 M)
 AC7702'EAST OF THE SOUTHEAST CORNER OF A CHAIN LINK FENCE.
 AC7702
 AC7702                          STATION RECOVERY (1997)
 AC7702
 AC7702'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AC7702'RECOVERED AS DESCRIBED, DUE TO ROAD WIDENING CONSTRUCTION THIS STATION
 AC7702'WILL PROBABLY BE DESTROYED IN THE NEAR FUTURE.
 AC7702
 AC7702                          STATION RECOVERY (2014)
 AC7702
 AC7702'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2014 (MRY)
 AC7702'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6404 ***********************************************************************
 DG6404  DESIGNATION -  GIS 19
 DG6404  PID         -  DG6404
 DG6404  STATE/COUNTY-  MD/TALBOT
 DG6404  COUNTRY     -  US
 DG6404  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6404
 DG6404                         *CURRENT SURVEY CONTROL
 DG6404  ______________________________________________________________________
 DG6404* NAD 83(1986) POSITION- 38 47 49.06   (N) 076 13 34.92   (W)   HD_HELD1
 DG6404* NAVD 88 ORTHO HEIGHT -     2.371 (meters)        7.78  (feet) ADJUSTED
 DG6404  ______________________________________________________________________
 DG6404  GEOID HEIGHT    -        -34.300 (meters)                     GEOID18
 DG6404  DYNAMIC HEIGHT  -          2.370 (meters)        7.78  (feet) COMP
 DG6404  MODELED GRAVITY -    980,047.4   (mgal)                       NAVD 88
 DG6404
 DG6404  VERT ORDER      -  SECOND    CLASS I
 DG6404
 DG6404.The horizontal coordinates were determined by differentially corrected
 DG6404.hand held GPS observations or other comparable positioning techniques
 DG6404.and have an estimated accuracy of +/- 3 meters.
 DG6404
 DG6404.The orthometric height was determined by differential leveling and
 DG6404.adjusted by the NATIONAL GEODETIC SURVEY
 DG6404.in September 2004.
 DG6404
 DG6404.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6404.GEOID18 height accuracy estimate available here.
 DG6404
 DG6404.Click photographs - Photos may exist for this station.
 DG6404
 DG6404.The dynamic height is computed by dividing the NAVD 88
 DG6404.geopotential number by the normal gravity value computed on the
 DG6404.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6404.degrees latitude (g = 980.6199 gals.).
 DG6404
 DG6404.The modeled gravity was interpolated from observed gravity values.
 DG6404
 DG6404;                    North         East    Units  Estimated Accuracy
 DG6404;SPC MD       -   125,752.0     467,204.1     MT  (+/- 3 meters HH1 GPS) 
 DG6404
 DG6404_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9350294959(NAD 83)
 DG6404
 DG6404                          SUPERSEDED SURVEY CONTROL
 DG6404
 DG6404.No superseded survey control is available for this station.
 DG6404
 DG6404_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6404_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6404_STAMPING: NO GIS 19 1995
 DG6404_MARK LOGO: MD1370
 DG6404_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6404_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6404+STABILITY: SURFACE MOTION
 DG6404_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6404+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6404
 DG6404  HISTORY     - Date     Condition        Report By
 DG6404  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6404  HISTORY     - 19991213 GOOD             MDSHA
 DG6404
 DG6404                          STATION DESCRIPTION
 DG6404
 DG6404'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6404'THE MARK IS LOCATED ABOUT 3.1 MI (4.99 KM) EAST-SOUTHEAST OF MCDANIEL,
 DG6404'3.0 MI (4.83 KM) NORTHEAST OF BOZMAN AND 0.8 MI (1.29 KM) NORTH OF ST
 DG6404'MICHAELS.  TO REACH THE MARK FROM THE POST OFFICE IN ST. MICHAELS,
 DG6404'PROCEED NORTH ALONG MARYLAND STATE HIGHWAY 33 FOR 0.85 MILES (1.37 KM)
 DG6404'TO YACHT CLUB ROAD AND THE MARK ON THE RIGHT. IT IS 29.9 FEET (9.1 M)
 DG6404'EAST OF THE CENTER LINE OF THE HIGHWAY, 123.5 FEET (37.6 M) NORTH OF
 DG6404'THE CENTER OF YACHT CLUB ROAD, 71.0 FEET (21.6 M) NORTHWEST OF
 DG6404'TELEPHONE POLE NUMBER 315 AND IN LINE WITH THE SOUTH EDGE OF ROLLES
 DG6404'RANGE ROAD LEADING WEST.  IT IS A TOSM DISK SET IN THE TOP OF A
 DG6404'12-INCH (30 CM) ROUND CONCRETE POST FLUSH WITH THE GROUND AND 2 FEET
 DG6404'(0.6 M) LOWER THAN THE SURFACE OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7730 ***********************************************************************
 AC7730  DESIGNATION -  GIS 1A
 AC7730  PID         -  AC7730
 AC7730  STATE/COUNTY-  MD/BALTIMORE
 AC7730  COUNTRY     -  US
 AC7730  USGS QUAD   -  SPARROWS POINT (2016)
 AC7730
 AC7730                         *CURRENT SURVEY CONTROL
 AC7730  ______________________________________________________________________
 AC7730* NAD 83(2011) POSITION- 39 12 40.54095(N) 076 29 43.39705(W)   ADJUSTED
 AC7730* NAD 83(2011) ELLIP HT-   -29.681 (meters)        (06/27/12)   ADJUSTED
 AC7730* NAD 83(2011) EPOCH   -  2010.00
 AC7730* NAVD 88 ORTHO HEIGHT -     3.350 (meters)       10.99  (feet) ADJUSTED
 AC7730  ______________________________________________________________________
 AC7730  GEOID HEIGHT    -        -33.022 (meters)                     GEOID18
 AC7730  NAD 83(2011) X  -  1,155,594.234 (meters)                     COMP
 AC7730  NAD 83(2011) Y  - -4,811,690.122 (meters)                     COMP
 AC7730  NAD 83(2011) Z  -  4,010,497.961 (meters)                     COMP
 AC7730  LAPLACE CORR    -         -1.00  (seconds)                    DEFLEC18
 AC7730  DYNAMIC HEIGHT  -          3.348 (meters)       10.98  (feet) COMP
 AC7730  MODELED GRAVITY -    980,094.8   (mgal)                       NAVD 88
 AC7730
 AC7730  VERT ORDER      -  THIRD
 AC7730
 AC7730  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7730  Standards:
 AC7730         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7730            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7730  -------------------------------------------------------------------
 AC7730  NETWORK    0.57   1.12           0.26   0.20   0.57      0.00842319
 AC7730  -------------------------------------------------------------------
 AC7730  Click here for local accuracies and other accuracy information.
 AC7730
 AC7730.The horizontal coordinates were established by GPS observations
 AC7730.and adjusted by the National Geodetic Survey in June 2012.
 AC7730
 AC7730.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7730.been affixed to the stable North American tectonic plate. See 
 AC7730.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7730
 AC7730.The horizontal coordinates are valid at the epoch date displayed above
 AC7730.which is a decimal equivalence of Year/Month/Day.
 AC7730
 AC7730.The orthometric height was determined by differential leveling and
 AC7730.adjusted by the NATIONAL GEODETIC SURVEY
 AC7730.in February 1998.
 AC7730
 AC7730.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7730.GEOID18 height accuracy estimate available here.
 AC7730
 AC7730.Click photographs - Photos may exist for this station.
 AC7730
 AC7730.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7730
 AC7730.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7730
 AC7730.The ellipsoidal height was determined by GPS observations
 AC7730.and is referenced to NAD 83.
 AC7730
 AC7730.The dynamic height is computed by dividing the NAVD 88
 AC7730.geopotential number by the normal gravity value computed on the
 AC7730.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7730.degrees latitude (g = 980.6199 gals.).
 AC7730
 AC7730.The modeled gravity was interpolated from observed gravity values.
 AC7730
 AC7730. The following values were computed from the NAD 83(2011) position.
 AC7730
 AC7730;                    North         East     Units Scale Factor Converg.
 AC7730;SPC MD       -   171,579.393   443,580.766   MT  0.99996695   +0 19 00.2
 AC7730;SPC MD       -   562,923.39  1,455,314.56   sFT  0.99996695   +0 19 00.2
 AC7730;UTM  18      - 4,341,286.137   370,894.696   MT  0.99980523   -0 56 43.8
 AC7730
 AC7730!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7730!SPC MD       -   1.00000466  x   0.99996695  =   0.99997161
 AC7730!UTM  18      -   1.00000466  x   0.99980523  =   0.99980989
 AC7730
 AC7730:                Primary Azimuth Mark                     Grid Az
 AC7730:SPC MD       -  GIS 1                                    005 50 54.0
 AC7730:UTM  18      -  GIS 1                                    007 06 38.0
 AC7730
 AC7730_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7089441286(NAD 83)
 AC7730
 AC7730|---------------------------------------------------------------------|
 AC7730| PID    Reference Object                     Distance      Geod. Az  |
 AC7730|                                                           dddmmss.s |
 AC7730| AC7684 GIS 1                               APPROX. 1.7 KM 0060954.2 |
 AC7730|---------------------------------------------------------------------|
 AC7730
 AC7730                          SUPERSEDED SURVEY CONTROL
 AC7730
 AC7730  NAD 83(2007)-  39 12 40.54123(N)    076 29 43.39785(W) AD(2002.00) 0
 AC7730  ELLIP H (02/10/07)  -29.665  (m)                       GP(2002.00)    
 AC7730  ELLIP H (08/30/02)  -29.649  (m)                       GP(       ) 4 2
 AC7730  NAD 83(1991)-  39 12 40.54120(N)    076 29 43.39731(W) AD(       ) 1
 AC7730  ELLIP H (04/08/97)  -29.736  (m)                       GP(       ) 3 1
 AC7730  NAVD 88 (04/08/97)    3.3    (m)  GEOID93  model used  GPS OBS        
 AC7730
 AC7730.Superseded values are not recommended for survey control.
 AC7730
 AC7730.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7730.See file dsdata.pdf to determine how the superseded data were derived.
 AC7730
 AC7730_MARKER: N = NAIL
 AC7730_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 AC7730_MARK LOGO: MD-005
 AC7730_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC7730_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AC7730_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7730+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AC7730
 AC7730  HISTORY     - Date     Condition        Report By
 AC7730  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7730
 AC7730                          STATION DESCRIPTION
 AC7730
 AC7730'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7730'STATION IS LOCATED ABOUT 8.5 MI (13.7 KM) SOUTHEAST OF THE CENTER OF
 AC7730'BALTIMORE AT SPARROWS POINT. TO REACH STATION FROM I-695 (BELTWAY)
 AC7730'TAKE EXIT 42 TO NORTH POINT BLVD (RT 151)  FROM THE I-695 OVERPASS
 AC7730'OVER NORTH POINT BLVD GO SOUTH 1.8 MI (2.90 KM) ON NORTH POINT BLVD TO
 AC7730'THE INTERSECTION WITH 7TH STREET. TURN RIGHT ON 7TH ST. AND GO 0.2 MI
 AC7730'(0.3 KM) TO INTERSECTION WITH PENWOOD ROAD. TURN RIGHT ON PENWOOD RD
 AC7730'FOR 0.2 MI (0.3 KM) TO THE INTERSECTION WITH TINMILL ROAD. TURN LEFT
 AC7730'ON TINMILL RD AND GO 0.9 MI (1.4 KM) TO RIVERSIDE DRIVE. TURN LEFT AND
 AC7730'GO SOUTH ON RIVERSIDE DR. FOR 0.1 MI (0.2 KM) TO THE ENTRANCE GATE TO
 AC7730'THE SHIPYARD. PROCEED THROUGH GATE AND CONTINUE SOUTH FOR 1.1 MI (1.8
 AC7730'KM) TO COAL FIELD ROAD. TURN RIGHT AND GO WEST ON COAL DOCK ROAD FOR
 AC7730'0.15 MI (0.24 KM) TO THE STATION ON THE RIGHT. STATION MARK IS A MASON
 AC7730'NAIL SET IN THE TOP OF A CONCRETE SLAB. IT IS 48.1 FT (14.7 M)
 AC7730'SOUTHEAST OF THE NORTHEAST CORNER OF A BRICK BUILDING, 32.6 FT (9.9 M)
 AC7730'SOUTHEAST OF THE SOUTHEAST CORNER OF THE BRICK BUILDING AND 86.6 FT
 AC7730'(26.4 M) NORTH OF POWER POLE NO. 13-065 P.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7731 ***********************************************************************
 AC7731  DESIGNATION -  GIS 1B
 AC7731  PID         -  AC7731
 AC7731  STATE/COUNTY-  MD/ANNE ARUNDEL
 AC7731  COUNTRY     -  US
 AC7731  USGS QUAD   -  CURTIS BAY (2016)
 AC7731
 AC7731                         *CURRENT SURVEY CONTROL
 AC7731  ______________________________________________________________________
 AC7731* NAD 83(2011) POSITION- 39 12 35.12577(N) 076 32 06.00342(W)   ADJUSTED
 AC7731* NAD 83(2011) ELLIP HT-   -26.718 (meters)        (06/27/12)   ADJUSTED
 AC7731* NAD 83(2011) EPOCH   -  2010.00
 AC7731* NAVD 88 ORTHO HEIGHT -     6.3   (meters)       21.    (feet) GPS OBS
 AC7731  ______________________________________________________________________
 AC7731  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AC7731  GEOID HEIGHT    -        -33.867 (meters)                     GEOID93
 AC7731  GEOID HEIGHT    -        -32.987 (meters)                     GEOID18
 AC7731  NAD 83(2011) X  -  1,152,292.392 (meters)                     COMP
 AC7731  NAD 83(2011) Y  - -4,812,592.823 (meters)                     COMP
 AC7731  NAD 83(2011) Z  -  4,010,370.441 (meters)                     COMP
 AC7731  LAPLACE CORR    -         -2.66  (seconds)                    DEFLEC18
 AC7731
 AC7731  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7731  Standards:
 AC7731         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7731            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7731  -------------------------------------------------------------------
 AC7731  NETWORK    0.51   0.88           0.23   0.18   0.45      0.10155887
 AC7731  -------------------------------------------------------------------
 AC7731  Click here for local accuracies and other accuracy information.
 AC7731
 AC7731.The horizontal coordinates were established by GPS observations
 AC7731.and adjusted by the National Geodetic Survey in June 2012.
 AC7731
 AC7731.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7731.been affixed to the stable North American tectonic plate. See 
 AC7731.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7731
 AC7731.The horizontal coordinates are valid at the epoch date displayed above
 AC7731.which is a decimal equivalence of Year/Month/Day.
 AC7731
 AC7731.The orthometric height was determined by GPS observations and a
 AC7731.high-resolution geoid model.
 AC7731
 AC7731.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7731.GEOID18 height accuracy estimate available here.
 AC7731
 AC7731.Click photographs - Photos may exist for this station.
 AC7731
 AC7731.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7731
 AC7731.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7731
 AC7731.The ellipsoidal height was determined by GPS observations
 AC7731.and is referenced to NAD 83.
 AC7731
 AC7731. The following values were computed from the NAD 83(2011) position.
 AC7731
 AC7731;                    North         East     Units Scale Factor Converg.
 AC7731;SPC MD       -   171,394.234   440,160.485   MT  0.99996679   +0 17 30.7
 AC7731;SPC MD       -   562,315.92  1,444,093.19   sFT  0.99996679   +0 17 30.7
 AC7731;UTM  18      - 4,341,176.387   367,471.700   MT  0.99981626   -0 58 13.8
 AC7731
 AC7731!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7731!SPC MD       -   1.00000419  x   0.99996679  =   0.99997098
 AC7731!UTM  18      -   1.00000419  x   0.99981626  =   0.99982045
 AC7731
 AC7731_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6747141176(NAD 83)
 AC7731
 AC7731                          SUPERSEDED SURVEY CONTROL
 AC7731
 AC7731  NAD 83(2007)-  39 12 35.12605(N)    076 32 06.00423(W) AD(2002.00) 0
 AC7731  ELLIP H (02/10/07)  -26.704  (m)                       GP(2002.00)    
 AC7731  ELLIP H (08/30/02)  -26.691  (m)                       GP(       ) 4 2
 AC7731  NAD 83(1991)-  39 12 35.12601(N)    076 32 06.00369(W) AD(       ) 1
 AC7731  ELLIP H (04/08/97)  -26.774  (m)                       GP(       ) 3 1
 AC7731
 AC7731.Superseded values are not recommended for survey control.
 AC7731
 AC7731.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7731.See file dsdata.pdf to determine how the superseded data were derived.
 AC7731
 AC7731_MARKER: N = NAIL
 AC7731_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AC7731_SP_SET: ASPHALT WALK
 AC7731_MARK LOGO: MD-003
 AC7731_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC7731_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AC7731_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7731+SATELLITE: SATELLITE OBSERVATIONS - May 01, 2025
 AC7731
 AC7731  HISTORY     - Date     Condition        Report By
 AC7731  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7731  HISTORY     - 20020121 GOOD             USPSQD
 AC7731  HISTORY     - 20080228 GOOD             DEWDAV
 AC7731  HISTORY     - 20250501 GOOD             WHIREQ
 AC7731
 AC7731                          STATION DESCRIPTION
 AC7731
 AC7731'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7731'STATION IS LOCATED ABOUT SOUTHEAST OF BALTIMORE AT FORT ARMISTEAD
 AC7731'PARK. TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 1 TO QUARATINE
 AC7731'ROAD SOUTH TO THE INTERSECTION WITH HAWKINS POINT ROAD. TURN RIGHT AND
 AC7731'GO EAST ON HAWKINS POINT ROAD TO THE INTERSECTION WITH FORT ARMISTEAD
 AC7731'ROAD. TURN LEFT ON FORT ARMISTEAD ROAD AND GO NORTHEAST ON FORT
 AC7731'ARMISTEAD ROAD TO THE ENTRANCE TO THE PARK. CONTINUE THROUGH PARK FOR
 AC7731'0.25 MI (0.40 KM) TO THE STATION ON THE RIGHT AT THE INTERSECTION WITH
 AC7731'THE ROAD AND A PAVED WALK LEADING SOUTHEAST. STATION MARK IS A PK NAIL
 AC7731'SET IN THE PAVEMENT.
 AC7731
 AC7731                          STATION RECOVERY (2002)
 AC7731
 AC7731'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 AC7731'RECOVERED IN GOOD CONDITION.
 AC7731
 AC7731                          STATION RECOVERY (2008)
 AC7731
 AC7731'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7731'RECOVERED IN GOOD CONDITION.
 AC7731
 AC7731                          STATION RECOVERY (2025)
 AC7731
 AC7731'RECOVERY NOTE BY WHITMAN REQUARDT AND ASSOCIATES 2025 (NAD)
 AC7731'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7685 ***********************************************************************
 AC7685  DESIGNATION -  GIS 2
 AC7685  PID         -  AC7685
 AC7685  STATE/COUNTY-  MD/BALTIMORE
 AC7685  COUNTRY     -  US
 AC7685  USGS QUAD   -  SPARROWS POINT (2016)
 AC7685
 AC7685                         *CURRENT SURVEY CONTROL
 AC7685  ______________________________________________________________________
 AC7685* NAD 83(2011) POSITION- 39 13 02.35168(N) 076 27 46.77317(W)   ADJUSTED
 AC7685* NAD 83(2011) ELLIP HT-   -30.001 (meters)        (06/27/12)   ADJUSTED
 AC7685* NAD 83(2011) EPOCH   -  2010.00
 AC7685* NAVD 88 ORTHO HEIGHT -     3.033 (meters)        9.95  (feet) ADJUSTED
 AC7685  ______________________________________________________________________
 AC7685  GEOID HEIGHT    -        -33.030 (meters)                     GEOID18
 AC7685  NAD 83(2011) X  -  1,158,215.024 (meters)                     COMP
 AC7685  NAD 83(2011) Y  - -4,810,622.302 (meters)                     COMP
 AC7685  NAD 83(2011) Z  -  4,011,018.891 (meters)                     COMP
 AC7685  LAPLACE CORR    -         -0.66  (seconds)                    DEFLEC18
 AC7685  DYNAMIC HEIGHT  -          3.031 (meters)        9.94  (feet) COMP
 AC7685  MODELED GRAVITY -    980,104.1   (mgal)                       NAVD 88
 AC7685
 AC7685  VERT ORDER      -  THIRD
 AC7685
 AC7685  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7685  Standards:
 AC7685         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7685            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7685  -------------------------------------------------------------------
 AC7685  NETWORK    0.65   1.04           0.30   0.22   0.53     -0.04622606
 AC7685  -------------------------------------------------------------------
 AC7685  Click here for local accuracies and other accuracy information.
 AC7685
 AC7685.The horizontal coordinates were established by GPS observations
 AC7685.and adjusted by the National Geodetic Survey in June 2012.
 AC7685
 AC7685.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7685.been affixed to the stable North American tectonic plate. See 
 AC7685.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7685
 AC7685.The horizontal coordinates are valid at the epoch date displayed above
 AC7685.which is a decimal equivalence of Year/Month/Day.
 AC7685
 AC7685.The orthometric height was determined by differential leveling and
 AC7685.adjusted by the NATIONAL GEODETIC SURVEY
 AC7685.in February 1998.
 AC7685
 AC7685.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7685.GEOID18 height accuracy estimate available here.
 AC7685
 AC7685.Click photographs - Photos may exist for this station.
 AC7685
 AC7685.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7685
 AC7685.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7685
 AC7685.The ellipsoidal height was determined by GPS observations
 AC7685.and is referenced to NAD 83.
 AC7685
 AC7685.The dynamic height is computed by dividing the NAVD 88
 AC7685.geopotential number by the normal gravity value computed on the
 AC7685.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7685.degrees latitude (g = 980.6199 gals.).
 AC7685
 AC7685.The modeled gravity was interpolated from observed gravity values.
 AC7685
 AC7685. The following values were computed from the NAD 83(2011) position.
 AC7685
 AC7685;                    North         East     Units Scale Factor Converg.
 AC7685;SPC MD       -   172,267.937   446,374.615   MT  0.99996757   +0 20 13.4
 AC7685;SPC MD       -   565,182.39  1,464,480.72   sFT  0.99996757   +0 20 13.4
 AC7685;UTM  18      - 4,341,912.869   373,702.566   MT  0.99979640   -0 55 30.4
 AC7685
 AC7685!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7685!SPC MD       -   1.00000471  x   0.99996757  =   0.99997228
 AC7685!UTM  18      -   1.00000471  x   0.99979640  =   0.99980111
 AC7685
 AC7685_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7370241912(NAD 83)
 AC7685
 AC7685                          SUPERSEDED SURVEY CONTROL
 AC7685
 AC7685  NAD 83(2007)-  39 13 02.35195(N)    076 27 46.77395(W) AD(2002.00) 0
 AC7685  ELLIP H (02/10/07)  -29.983  (m)                       GP(2002.00)    
 AC7685  ELLIP H (08/30/02)  -29.971  (m)                       GP(       ) 4 2
 AC7685  NAD 83(1991)-  39 13 02.35187(N)    076 27 46.77332(W) AD(       ) 1
 AC7685  ELLIP H (04/08/97)  -30.061  (m)                       GP(       ) 3 1
 AC7685  NAVD 88 (04/08/97)    3.0    (m)  GEOID93  model used  GPS OBS        
 AC7685
 AC7685.Superseded values are not recommended for survey control.
 AC7685
 AC7685.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7685.See file dsdata.pdf to determine how the superseded data were derived.
 AC7685
 AC7685_MARKER: DD = SURVEY DISK
 AC7685_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7685_STAMPING: NO. GIS-2 1995
 AC7685_MARK LOGO: MD-005
 AC7685_PROJECTION: FLUSH
 AC7685_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7685_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7685+STABILITY: SURFACE MOTION
 AC7685_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7685+SATELLITE: SATELLITE OBSERVATIONS - June 04, 2020
 AC7685
 AC7685  HISTORY     - Date     Condition        Report By
 AC7685  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7685  HISTORY     - 20040406 GOOD             URS
 AC7685  HISTORY     - 20200604 GOOD             MD-005
 AC7685  HISTORY     - 20250327 MARK NOT FOUND   WHIREQ
 AC7685
 AC7685                          STATION DESCRIPTION
 AC7685
 AC7685'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7685'STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) SOUTHEAST OF THE CENTER OF
 AC7685'BALTIMORE AT SPARROWS POINT. TO REACH STATION FROM I-695 (BELTWAY)
 AC7685'TAKE EXIT 42 TO NORTH POINT BLVD SOUTH (RT 151). FROM THE I-695
 AC7685'OVERPASS OVER NORTH POINT BLVD GO SOUTH 1.1 MI (1.8 KM) ON NORTH POINT
 AC7685'BLVD TO THE WHARF ROAD EXIT. FOLLOW WHARF RD SOUTH FOR 1.4 MI (2.3 KM)
 AC7685'TO STATION ON LEFT JUST NORTH OF A LIGHTHOUSE. NOTE, A PASS IS NEEDED
 AC7685'FROM THE SPARROWS POINT POLICE DEPT FOR ACCESS THROUGH THE WHARF RD
 AC7685'GATE. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AC7685'MONUMENT SET FLUSH WITH THE GROUND. IT IS 44.00 FT (13.41 M) EAST OF
 AC7685'THE CENTERLINE OF WHARF RD, 33.70 FT (10.27 M) SOUTHEAST OF A CONCRETE
 AC7685'POST AT THE SOUTHERN END OF A POST AND CABLE GUARDRAIL AND 109.60 FT
 AC7685'(33.41 M) NORTH OF POWER POLE NO. 260604.
 AC7685
 AC7685                          STATION RECOVERY (2004)
 AC7685
 AC7685'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 AC7685'RECOVERED IN GOOD CONDITION.
 AC7685
 AC7685                          STATION RECOVERY (2020)
 AC7685
 AC7685'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (DFL)
 AC7685'RECOVERED IN GOOD CONDITION.
 AC7685
 AC7685                          STATION RECOVERY (2025)
 AC7685
 AC7685'RECOVERY NOTE BY WHITMAN REQUARDT AND ASSOCIATES 2025 (DS)
 AC7685'THE MARK APPEARS TO HAVE BEEN DESTROYED DUE TO ROAD WIDENING.  THE
 AC7685'POST AND CABLE GUARDRAIL ARE ALSO GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6398 ***********************************************************************
 DG6398  DESIGNATION -  GIS 2
 DG6398  PID         -  DG6398
 DG6398  STATE/COUNTY-  MD/TALBOT
 DG6398  COUNTRY     -  US
 DG6398  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6398
 DG6398                         *CURRENT SURVEY CONTROL
 DG6398  ______________________________________________________________________
 DG6398* NAD 83(1986) POSITION- 38 46 12.97   (N) 076 12 25.64   (W)   HD_HELD1
 DG6398* NAVD 88 ORTHO HEIGHT -     2.332 (meters)        7.65  (feet) ADJUSTED
 DG6398  ______________________________________________________________________
 DG6398  GEOID HEIGHT    -        -34.405 (meters)                     GEOID18
 DG6398  DYNAMIC HEIGHT  -          2.330 (meters)        7.64  (feet) COMP
 DG6398  MODELED GRAVITY -    980,042.5   (mgal)                       NAVD 88
 DG6398
 DG6398  VERT ORDER      -  SECOND    CLASS I
 DG6398
 DG6398.The horizontal coordinates were determined by differentially corrected
 DG6398.hand held GPS observations or other comparable positioning techniques
 DG6398.and have an estimated accuracy of +/- 3 meters.
 DG6398
 DG6398.The orthometric height was determined by differential leveling and
 DG6398.adjusted by the NATIONAL GEODETIC SURVEY
 DG6398.in September 2004.
 DG6398
 DG6398.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6398.GEOID18 height accuracy estimate available here.
 DG6398
 DG6398.Click photographs - Photos may exist for this station.
 DG6398
 DG6398.The dynamic height is computed by dividing the NAVD 88
 DG6398.geopotential number by the normal gravity value computed on the
 DG6398.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6398.degrees latitude (g = 980.6199 gals.).
 DG6398
 DG6398.The modeled gravity was interpolated from observed gravity values.
 DG6398
 DG6398;                    North         East    Units  Estimated Accuracy
 DG6398;SPC MD       -   122,803.5     468,901.5     MT  (+/- 3 meters HH1 GPS) 
 DG6398
 DG6398_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9513491975(NAD 83)
 DG6398
 DG6398                          SUPERSEDED SURVEY CONTROL
 DG6398
 DG6398.No superseded survey control is available for this station.
 DG6398
 DG6398_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6398_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6398_STAMPING: NO GIS 2 1995
 DG6398_MARK LOGO: MD1370
 DG6398_PROJECTION: FLUSH
 DG6398_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6398_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6398+STABILITY: SURFACE MOTION
 DG6398_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6398+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 DG6398
 DG6398  HISTORY     - Date     Condition        Report By
 DG6398  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6398  HISTORY     - 19991213 GOOD             MDSHA
 DG6398  HISTORY     - 20231213 GOOD             MDSHA
 DG6398
 DG6398                          STATION DESCRIPTION
 DG6398
 DG6398'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6398'THE MARK IS LOCATED ABOUT 2.5 MI (4.02 KM) NORTHWEST OF ROYAL OAK, 2.0
 DG6398'MI (3.22 KM) NORTHWEST OF NEWCOMB AND 1.4 MI (2.25 KM) SOUTHEAST OF ST
 DG6398'MICHAELS.  TO REACH THE MARK FROM THE POST OFFICE IN SAINT MICHAELS,
 DG6398'PROCEED SOUTHEAST ALONG MARYLAND STATE HIGHWAY 33 FOR 1.35 MILES (2.17
 DG6398'KM) TO PEA NECK ROAD LEADING SOUTHWEST AND THE MARK ON THE LEFT.  IT
 DG6398'IS IN LINE WITH THE PROJECTED CENTER LINE OF PEA NECK ROAD, 33.3 FEET
 DG6398'(10.1 M) NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 14.5 FEET (4.4
 DG6398'M) SOUTHEAST OF TELEPHONE POLE NUMBER 247, 71.0 FEET (21.6 M)
 DG6398'SOUTHWEST OF A FIRE HYDRANT AND 110.0 FEET (33.5 M) NORTHWEST OF A
 DG6398'METAL LIGHT POLE.  IT IS A TOSM DISK SET IN THE TOP OF A 8 INCH (20
 DG6398'CM) ROUND CONCRETE MONUMENTSET FLUSH WITH THE GROUND AND ABOUT 1.5
 DG6398'FEET (0.5 M) LOWER THAN THE SURFACE OF THE HIGHWAY.
 DG6398
 DG6398                          STATION RECOVERY (2023)
 DG6398
 DG6398'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG6398'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7703 ***********************************************************************
 AC7703  DESIGNATION -  GIS 20
 AC7703  PID         -  AC7703
 AC7703  STATE/COUNTY-  MD/BALTIMORE
 AC7703  COUNTRY     -  US
 AC7703  USGS QUAD   -  GUNPOWDER NECK (2016)
 AC7703
 AC7703                         *CURRENT SURVEY CONTROL
 AC7703  ______________________________________________________________________
 AC7703* NAD 83(2011) POSITION- 39 19 05.66545(N) 076 20 17.65293(W)   ADJUSTED
 AC7703* NAD 83(2011) ELLIP HT-   -30.714 (meters)        (06/27/12)   ADJUSTED
 AC7703* NAD 83(2011) EPOCH   -  2010.00
 AC7703* NAVD 88 ORTHO HEIGHT -     2.422 (meters)        7.95  (feet) ADJUSTED
 AC7703  ______________________________________________________________________
 AC7703  GEOID HEIGHT    -        -33.135 (meters)                     GEOID18
 AC7703  NAD 83(2011) X  -  1,167,011.797 (meters)                     COMP
 AC7703  NAD 83(2011) Y  - -4,801,197.467 (meters)                     COMP
 AC7703  NAD 83(2011) Z  -  4,019,692.688 (meters)                     COMP
 AC7703  LAPLACE CORR    -         -2.47  (seconds)                    DEFLEC18
 AC7703  DYNAMIC HEIGHT  -          2.421 (meters)        7.94  (feet) COMP
 AC7703  MODELED GRAVITY -    980,110.3   (mgal)                       NAVD 88
 AC7703
 AC7703  VERT ORDER      -  THIRD
 AC7703
 AC7703  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7703  Standards:
 AC7703         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7703            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7703  -------------------------------------------------------------------
 AC7703  NETWORK    0.95   2.76           0.41   0.36   1.41     -0.13885824
 AC7703  -------------------------------------------------------------------
 AC7703  Click here for local accuracies and other accuracy information.
 AC7703
 AC7703.The horizontal coordinates were established by GPS observations
 AC7703.and adjusted by the National Geodetic Survey in June 2012.
 AC7703
 AC7703.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7703.been affixed to the stable North American tectonic plate. See 
 AC7703.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7703
 AC7703.The horizontal coordinates are valid at the epoch date displayed above
 AC7703.which is a decimal equivalence of Year/Month/Day.
 AC7703
 AC7703.The orthometric height was determined by differential leveling and
 AC7703.adjusted by the NATIONAL GEODETIC SURVEY
 AC7703.in February 1998.
 AC7703
 AC7703.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7703.GEOID18 height accuracy estimate available here.
 AC7703
 AC7703.Click photographs - Photos may exist for this station.
 AC7703
 AC7703.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7703
 AC7703.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7703
 AC7703.The ellipsoidal height was determined by GPS observations
 AC7703.and is referenced to NAD 83.
 AC7703
 AC7703.The dynamic height is computed by dividing the NAVD 88
 AC7703.geopotential number by the normal gravity value computed on the
 AC7703.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7703.degrees latitude (g = 980.6199 gals.).
 AC7703
 AC7703.The modeled gravity was interpolated from observed gravity values.
 AC7703
 AC7703. The following values were computed from the NAD 83(2011) position.
 AC7703
 AC7703;                    North         East     Units Scale Factor Converg.
 AC7703;SPC MD       -   183,542.334   457,066.808   MT  0.99997961   +0 24 55.2
 AC7703;SPC MD       -   602,171.81  1,499,560.02   sFT  0.99997961   +0 24 55.2
 AC7703;UTM  18      - 4,352,946.756   384,638.514   MT  0.99976386   -0 50 52.9
 AC7703
 AC7703!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7703!SPC MD       -   1.00000482  x   0.99997961  =   0.99998443
 AC7703!UTM  18      -   1.00000482  x   0.99976386  =   0.99976868
 AC7703
 AC7703_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8463852946(NAD 83)
 AC7703
 AC7703                          SUPERSEDED SURVEY CONTROL
 AC7703
 AC7703  NAD 83(2007)-  39 19 05.66571(N)    076 20 17.65371(W) AD(2002.00) 0
 AC7703  ELLIP H (02/10/07)  -30.697  (m)                       GP(2002.00)    
 AC7703  ELLIP H (08/30/02)  -30.675  (m)                       GP(       ) 4 2
 AC7703  NAD 83(1991)-  39 19 05.66581(N)    076 20 17.65339(W) AD(       ) 1
 AC7703  ELLIP H (04/08/97)  -30.692  (m)                       GP(       ) 3 1
 AC7703  NAVD 88 (04/08/97)    2.4    (m)  GEOID93  model used  GPS OBS        
 AC7703
 AC7703.Superseded values are not recommended for survey control.
 AC7703
 AC7703.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7703.See file dsdata.pdf to determine how the superseded data were derived.
 AC7703
 AC7703_MARKER: DD = SURVEY DISK
 AC7703_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7703_STAMPING: NO. GIS-20 1995
 AC7703_MARK LOGO: MD-005
 AC7703_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7703_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7703+STABILITY: SURFACE MOTION
 AC7703_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7703+SATELLITE: SATELLITE OBSERVATIONS - February 28, 2008
 AC7703
 AC7703  HISTORY     - Date     Condition        Report By
 AC7703  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7703  HISTORY     - 20080228 GOOD             DEWDAV
 AC7703
 AC7703                          STATION DESCRIPTION
 AC7703
 AC7703'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7703'STATION IS LOCATED ABOUT 12.5 MI (20.1 KM) EAST OF THE CENTER OF
 AC7703'BALTIMORE AND ABOUT 4.0 MI (6.4 KM) EAST OF GLEN L. MARTIN STATE
 AC7703'AIRPORT AT CARROLL ISLAND. TO REACH STATION FROM THE WHITE MARSH BLVD
 AC7703'(ROUTE 43) OVERPASS OVER I-95 GO EAST ON WHITE MARSH BLVD FOR 1.25 MI
 AC7703'(2.01 KM) TO ROUTE 40 (PULASKI HIGHWAY). TURN RIGHT AND GO EAST ON
 AC7703'ROUTE 40 FOR 0.6 MI (1.0 KM) TO EBENEZER ROAD. TURN RIGHT AND GO EAST
 AC7703'ON EBENEZER ROAD FOR 2.5 MI (4.02 KM) TO EARLS ROAD. TURN RIGHT ON
 AC7703'EARLS ROAD AND GO 1.7 MI (2.7 KM) TO EASTERN AVE. TURN RIGHT ON
 AC7703'EASTERN AVE AND GO 0.1 MI (0.2 KM) TO BOWLEYS QUARTERS ROAD. TURN LEFT
 AC7703'ON BOWLEYS QUARTERS ROAD AND GO 0.35 MI (0.56 KM) TO CARROLL ISLAND
 AC7703'ROAD. TURN LEFT ON CARROLL ISLAND ROAD AND GO 2.2 MI (3.5 KM) TO THE
 AC7703'GATE ENTRANCE TO ABERDEEN PROVING GROUNDS CARROLL ISLAND FACILITY.
 AC7703'FROM LOCKED GATE GO 1.4 MILES ALONG ENTRANCE ROAD TO THE STATION ON
 AC7703'THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AC7703'MONUMENT SET FLUSH WITH THE GROUND. IT IS 24.26 FT (7.39 M) SOUTHWEST
 AC7703'OF THE CENTERLINE OF THE ENTRANCE ROAD, 32.26 FT (9.83 M) SOUTHEAST OF
 AC7703'POWER POLE NO. 7047, 120.00 FT (36.58 M) NORTH OF THE NORTHWEST CORNER
 AC7703'OF A CONCRETE BUILDING NO. E7987, 62.49 FT (19.05 M) NORTHWEST OF AN
 AC7703'UNNUMBERED POWER POLE AND 12 FT (3.7 M) EAST OF A CONCRETE MOUND OVER
 AC7703'WELL NO. W-3.
 AC7703
 AC7703                          STATION RECOVERY (2008)
 AC7703
 AC7703'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7703'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7704 ***********************************************************************
 AC7704  DESIGNATION -  GIS 21
 AC7704  PID         -  AC7704
 AC7704  STATE/COUNTY-  MD/BALTIMORE
 AC7704  COUNTRY     -  US
 AC7704  USGS QUAD   -  WHITE MARSH (2016)
 AC7704
 AC7704                         *CURRENT SURVEY CONTROL
 AC7704  ______________________________________________________________________
 AC7704* NAD 83(2011) POSITION- 39 28 07.40013(N) 076 26 28.34965(W)   ADJUSTED
 AC7704* NAD 83(2011) ELLIP HT-    91.747 (meters)        (06/27/12)   ADJUSTED
 AC7704* NAD 83(2011) EPOCH   -  2010.00
 AC7704* NAVD 88 ORTHO HEIGHT -   124.513 (meters)      408.51  (feet) ADJUSTED
 AC7704  ______________________________________________________________________
 AC7704  GEOID HEIGHT    -        -32.757 (meters)                     GEOID18
 AC7704  NAD 83(2011) X  -  1,155,917.652 (meters)                     COMP
 AC7704  NAD 83(2011) Y  - -4,793,071.572 (meters)                     COMP
 AC7704  NAD 83(2011) Z  -  4,032,681.690 (meters)                     COMP
 AC7704  LAPLACE CORR    -         -2.97  (seconds)                    DEFLEC18
 AC7704  DYNAMIC HEIGHT  -        124.448 (meters)      408.29  (feet) COMP
 AC7704  MODELED GRAVITY -    980,105.3   (mgal)                       NAVD 88
 AC7704
 AC7704  VERT ORDER      -  SECOND    CLASS II
 AC7704
 AC7704  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7704  Standards:
 AC7704         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7704            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7704  -------------------------------------------------------------------
 AC7704  NETWORK    0.57   0.96           0.25   0.21   0.49      0.08826192
 AC7704  -------------------------------------------------------------------
 AC7704  Click here for local accuracies and other accuracy information.
 AC7704
 AC7704.The horizontal coordinates were established by GPS observations
 AC7704.and adjusted by the National Geodetic Survey in June 2012.
 AC7704
 AC7704.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7704.been affixed to the stable North American tectonic plate. See 
 AC7704.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7704
 AC7704.The horizontal coordinates are valid at the epoch date displayed above
 AC7704.which is a decimal equivalence of Year/Month/Day.
 AC7704
 AC7704.The orthometric height was determined by differential leveling and
 AC7704.adjusted by the NATIONAL GEODETIC SURVEY
 AC7704.in February 1998.
 AC7704
 AC7704.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7704.GEOID18 height accuracy estimate available here.
 AC7704
 AC7704.Click photographs - Photos may exist for this station.
 AC7704
 AC7704.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7704
 AC7704.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7704
 AC7704.The ellipsoidal height was determined by GPS observations
 AC7704.and is referenced to NAD 83.
 AC7704
 AC7704.The dynamic height is computed by dividing the NAVD 88
 AC7704.geopotential number by the normal gravity value computed on the
 AC7704.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7704.degrees latitude (g = 980.6199 gals.).
 AC7704
 AC7704.The modeled gravity was interpolated from observed gravity values.
 AC7704
 AC7704. The following values were computed from the NAD 83(2011) position.
 AC7704
 AC7704;                    North         East     Units Scale Factor Converg.
 AC7704;SPC MD       -   200,189.454   448,084.985   MT  1.00000333   +0 21 02.6
 AC7704;SPC MD       -   656,788.23  1,470,092.15   sFT  1.00000333   +0 21 02.6
 AC7704;UTM  18      - 4,369,784.514   376,028.278   MT  0.99978923   -0 54 58.4
 AC7704
 AC7704!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7704!SPC MD       -   0.99998561  x   1.00000333  =   0.99998894
 AC7704!UTM  18      -   0.99998561  x   0.99978923  =   0.99977484
 AC7704
 AC7704_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7602869784(NAD 83)
 AC7704
 AC7704                          SUPERSEDED SURVEY CONTROL
 AC7704
 AC7704  NAD 83(2007)-  39 28 07.40037(N)    076 26 28.35030(W) AD(2002.00) 0
 AC7704  ELLIP H (02/10/07)   91.764  (m)                       GP(2002.00)    
 AC7704  ELLIP H (08/30/02)   91.763  (m)                       GP(       ) 4 2
 AC7704  NAD 83(1991)-  39 28 07.40033(N)    076 26 28.35046(W) AD(       ) 1
 AC7704  ELLIP H (04/08/97)   91.755  (m)                       GP(       ) 3 1
 AC7704  NAVD 88             124.51   (m)          408.5    (f) LEVELING    3  
 AC7704  NAVD 88 (04/08/97)  124.5    (m)  GEOID93  model used  GPS OBS        
 AC7704
 AC7704.Superseded values are not recommended for survey control.
 AC7704
 AC7704.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7704.See file dsdata.pdf to determine how the superseded data were derived.
 AC7704
 AC7704_MARKER: DD = SURVEY DISK
 AC7704_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7704_STAMPING: NO. GIS-21 1995
 AC7704_MARK LOGO: MD-005
 AC7704_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7704_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7704+STABILITY: SURFACE MOTION
 AC7704_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7704+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2015
 AC7704
 AC7704  HISTORY     - Date     Condition        Report By
 AC7704  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7704  HISTORY     - 19961002 GOOD             MCCRON
 AC7704  HISTORY     - 19970702 GOOD             MD-005
 AC7704  HISTORY     - 19971020 GOOD             DMW
 AC7704  HISTORY     - 20040102 GOOD             USPSQD
 AC7704  HISTORY     - 20091021 GOOD             MD-005
 AC7704  HISTORY     - 20150615 GOOD             USPSQD
 AC7704
 AC7704                          STATION DESCRIPTION
 AC7704
 AC7704'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7704'STATION IS LOCATED ABOUT 15.5 MI (24.9 KM) NORTHEAST OF THE CENTER OF
 AC7704'BALTIMORE AND ABOUT 10.5 MILES EAST OF TIMONIUM AT FORK. TO REACH
 AC7704'STATION FROM THE INTERSECTION OF ROUTE 152 AND HARFORD ROAD (ROUTE
 AC7704'147) GO SOUTHWEST ON HARFORD ROAD FOR 3.3 MI (5.3 KM) TO THE STATION
 AC7704'ON THE RIGHT, JUST NORTH OF THE INTERSECTION OF HARFORD ROAD, SUNSHINE
 AC7704'AVE AND FORK ROAD IN A GRASSY AREA BETWEEN THE ROAD AND A PARKING LOT.
 AC7704'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7704'SET FLUSH WITH THE GROUND. IT IS 63.75 FT (19.43 M) SOUTHWEST OF POWER
 AC7704'POLE NO. 52036, 31.85 FT (9.71 M) SOUTH OF THE SOUTHEAST CORNER OF THE
 AC7704'PARKING LOT, 24.27 FT (7.40 M) NORTHEAST OF POWER POLE NO. 542417,
 AC7704'1.91 FT (0.58 M) NORTHWEST OF THE FACE OF CURB ALONG HARFORD ROAD AND
 AC7704'28.38 FT (8.65 M) NORTHWEST OF OF THE CENTERLINE OF HARFORD ROAD.
 AC7704
 AC7704                          STATION RECOVERY (1996)
 AC7704
 AC7704'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996
 AC7704'STATION IS LOCATED ABOUT 15.5 MI (24.94 KM) NORTHEAST OF THE CENTER OF
 AC7704'BALTIMORE AND ABOUT 10.5 MI (16.90 KM) EAST OF TIMONIUM AT FORK. TO
 AC7704'REACH STATION FROM THE INTERSECTION OF ROUTE 152 AND HARFORD ROAD
 AC7704'(ROUTE 147) GO SOUTHWEST ON HARFORD ROAD FOR 3.3 MI (5.31 KM) TO THE
 AC7704'STATION ON THE RIGHT, JUST NORTH OF THE INTERSECTION OF HARFORD ROAD,
 AC7704'SUNSHINE AVE. AND FORK ROAD IN A GRASSY AREA BETWEEN THE ROAD AND A
 AC7704'PARKING LOT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AC7704'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 63.75 FT (19.43 M)
 AC7704'SOUTHWEST OF POWER POLE NO. 52036, 31.85 FT (9.71 M) SOUTH OF THE
 AC7704'SOUTHEAST CORNER OF THE PARKING LOT, 24.27 FT (7.40 M) NORTHEAST OF
 AC7704'POWER POLE NO. 542417, 1.91 FT (0.58 M) NORTHWEST OF THE FACE OF CURB
 AC7704'ALONG HARFORD ROAD AND 28.38 FT (8.65 M) NORTHWEST OF THE CENTERLINE
 AC7704'OF HARFORD ROAD.
 AC7704
 AC7704                          STATION RECOVERY (1997)
 AC7704
 AC7704'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7704'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7704'1997.
 AC7704
 AC7704                          STATION RECOVERY (1997)
 AC7704
 AC7704'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AC7704'RECOVERED AS DESCRIBED.
 AC7704
 AC7704                          STATION RECOVERY (2004)
 AC7704
 AC7704'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 AC7704'RECOVERED IN GOOD CONDITION.
 AC7704
 AC7704                          STATION RECOVERY (2009)
 AC7704
 AC7704'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AC7704'RECOVERED IN GOOD CONDITION.
 AC7704
 AC7704                          STATION RECOVERY (2015)
 AC7704
 AC7704'RECOVERY NOTE BY US POWER SQUADRON 2015
 AC7704'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7705 ***********************************************************************
 AC7705  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7705  DESIGNATION -  GIS 22
 AC7705  PID         -  AC7705
 AC7705  STATE/COUNTY-  MD/BALTIMORE
 AC7705  COUNTRY     -  US
 AC7705  USGS QUAD   -  PHOENIX (2016)
 AC7705
 AC7705                         *CURRENT SURVEY CONTROL
 AC7705  ______________________________________________________________________
 AC7705* NAD 83(2011) POSITION- 39 31 00.42653(N) 076 33 27.53048(W)   ADJUSTED
 AC7705* NAD 83(2011) ELLIP HT-   151.717 (meters)        (06/27/12)   ADJUSTED
 AC7705* NAD 83(2011) EPOCH   -  2010.00
 AC7705* NAVD 88 ORTHO HEIGHT -   184.20  (meters)      604.3   (feet) GPS OBS
 AC7705  ______________________________________________________________________
 AC7705  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AC7705  GEOID HEIGHT    -        -32.488 (meters)                     GEOID99
 AC7705  GEOID HEIGHT    -        -32.483 (meters)                     GEOID18
 AC7705  NAD 83(2011) X  -  1,145,396.390 (meters)                     COMP
 AC7705  NAD 83(2011) Y  - -4,792,154.997 (meters)                     COMP
 AC7705  NAD 83(2011) Z  -  4,036,837.864 (meters)                     COMP
 AC7705  LAPLACE CORR    -         -2.93  (seconds)                    DEFLEC18
 AC7705
 AC7705  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7705  Standards:
 AC7705         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7705            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7705  -------------------------------------------------------------------
 AC7705  NETWORK    0.48   0.82           0.22   0.17   0.42     -0.00674955
 AC7705  -------------------------------------------------------------------
 AC7705  Click here for local accuracies and other accuracy information.
 AC7705
 AC7705.The horizontal coordinates were established by GPS observations
 AC7705.and adjusted by the National Geodetic Survey in June 2012.
 AC7705
 AC7705.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7705.been affixed to the stable North American tectonic plate. See 
 AC7705.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7705
 AC7705.The horizontal coordinates are valid at the epoch date displayed above
 AC7705.which is a decimal equivalence of Year/Month/Day.
 AC7705
 AC7705.The orthometric height was determined by GPS observations and a
 AC7705.high-resolution geoid model using precise GPS observation and
 AC7705.processing techniques.
 AC7705
 AC7705.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7705.GEOID18 height accuracy estimate available here.
 AC7705
 AC7705.Click photographs - Photos may exist for this station.
 AC7705
 AC7705.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7705
 AC7705.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7705
 AC7705.The ellipsoidal height was determined by GPS observations
 AC7705.and is referenced to NAD 83.
 AC7705
 AC7705. The following values were computed from the NAD 83(2011) position.
 AC7705
 AC7705;                    North         East     Units Scale Factor Converg.
 AC7705;SPC MD       -   205,470.668   438,039.432   MT  1.00001237   +0 16 39.5
 AC7705;SPC MD       -   674,115.02  1,437,134.37   sFT  1.00001237   +0 16 39.5
 AC7705;UTM  18      - 4,375,285.601   366,104.060   MT  0.99982073   -0 59 28.6
 AC7705
 AC7705!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7705!SPC MD       -   0.99997620  x   1.00001237  =   0.99998857
 AC7705!UTM  18      -   0.99997620  x   0.99982073  =   0.99979693
 AC7705
 AC7705_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6610475285(NAD 83)
 AC7705
 AC7705                          SUPERSEDED SURVEY CONTROL
 AC7705
 AC7705  NAD 83(2007)-  39 31 00.42671(N)    076 33 27.53112(W) AD(2002.00) 0
 AC7705  ELLIP H (02/10/07)  151.736  (m)                       GP(2002.00)    
 AC7705  ELLIP H (08/30/02)  151.740  (m)                       GP(       ) 4 2
 AC7705  NAD 83(1991)-  39 31 00.42663(N)    076 33 27.53119(W) AD(       ) 1
 AC7705  ELLIP H (04/08/97)  151.694  (m)                       GP(       ) 3 1
 AC7705  NAVD 88 (04/08/97)  184.2    (m)  GEOID93  model used  GPS OBS        
 AC7705
 AC7705.Superseded values are not recommended for survey control.
 AC7705
 AC7705.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7705.See file dsdata.pdf to determine how the superseded data were derived.
 AC7705
 AC7705_MARKER: DD = SURVEY DISK
 AC7705_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7705_STAMPING: NO. GIS-22 1995
 AC7705_MARK LOGO: MD-005
 AC7705_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7705_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7705+STABILITY: SURFACE MOTION
 AC7705_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7705+SATELLITE: SATELLITE OBSERVATIONS - November 11, 2009
 AC7705
 AC7705  HISTORY     - Date     Condition        Report By
 AC7705  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7705  HISTORY     - 19970701 GOOD             MD-005
 AC7705  HISTORY     - 20030522 GOOD             DMW
 AC7705  HISTORY     - 20091111 GOOD             GPSSS
 AC7705
 AC7705                          STATION DESCRIPTION
 AC7705
 AC7705'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7705'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTHEAST OF COCKEYSVILLE AT
 AC7705'JACKSONVILLE. TO REACH STATION FROM THE INTERSECTION OF ROUTES 146
 AC7705'(JARRETTSVILLE PIKE) AND ROUTE 145 (SWEET AIR ROAD) GO SOUTHEAST ON
 AC7705'ROUTE 145 FOR 0.15 MI (0.24 KM) TO THE STATION ON THE LEFT. STATION
 AC7705'MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 AC7705'WITH THE GROUND. IT IS 4.42 FT (1.35 M) NORTHEAST OF THE FACE OF CURB,
 AC7705'30.27 FT (9.23 M) NORTHEAST OF THE CENTERLINE OF RT 145, 23.14 FT
 AC7705'(7.05 M) SOUTHEAST OF UTILTY POLE NO. 219/266701, AND 76.99 FT (23.47
 AC7705'M) NORTHWEST OF UTILITY POLE NO. 220.
 AC7705
 AC7705                          STATION RECOVERY (1997)
 AC7705
 AC7705'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7705'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7705'1997.
 AC7705
 AC7705                          STATION RECOVERY (2003)
 AC7705
 AC7705'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (DMM)
 AC7705'RECOVERED IN GOOD CONDITION.
 AC7705
 AC7705                          STATION RECOVERY (2009)
 AC7705
 AC7705'RECOVERY NOTE BY GPS SALES AND SERVICES 2009 (KAH)
 AC7705'RECOVERED BY KEITH HEINDEL, PLS OF PROFESSIONAL SURVEYS, LLC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR1632 ***********************************************************************
 DR1632  DESIGNATION -  GIS 23 2
 DR1632  PID         -  DR1632
 DR1632  STATE/COUNTY-  MD/BALTIMORE
 DR1632  COUNTRY     -  US
 DR1632  USGS QUAD   -  WHITE MARSH (2016)
 DR1632
 DR1632                         *CURRENT SURVEY CONTROL
 DR1632  ______________________________________________________________________
 DR1632* NAD 83(1986) POSITION- 39 25 12.40   (N) 076 22 32.30   (W)   HD_HELD1
 DR1632* NAVD 88 ORTHO HEIGHT -     9.559 (meters)       31.36  (feet) ADJUSTED
 DR1632  ______________________________________________________________________
 DR1632  GEOID HEIGHT    -        -33.002 (meters)                     GEOID18
 DR1632  DYNAMIC HEIGHT  -          9.554 (meters)       31.35  (feet) COMP
 DR1632  MODELED GRAVITY -    980,102.5   (mgal)                       NAVD 88
 DR1632
 DR1632  VERT ORDER      -  SECOND    CLASS I
 DR1632
 DR1632.The horizontal coordinates were determined by differentially corrected
 DR1632.hand held GPS observations or other comparable positioning techniques
 DR1632.and have an estimated accuracy of +/- 3 meters.
 DR1632
 DR1632.The orthometric height was determined by differential leveling and
 DR1632.adjusted by the NATIONAL GEODETIC SURVEY
 DR1632.in May 2019.
 DR1632
 DR1632.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR1632.GEOID18 height accuracy estimate available here.
 DR1632
 DR1632.Click photographs - Photos may exist for this station.
 DR1632
 DR1632.The dynamic height is computed by dividing the NAVD 88
 DR1632.geopotential number by the normal gravity value computed on the
 DR1632.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR1632.degrees latitude (g = 980.6199 gals.).
 DR1632
 DR1632.The modeled gravity was interpolated from observed gravity values.
 DR1632
 DR1632;                    North         East    Units  Estimated Accuracy
 DR1632;SPC MD       -   194,829.1     453,764.2     MT  (+/- 3 meters HH1 GPS) 
 DR1632
 DR1632_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8158664301(NAD 83)
 DR1632
 DR1632                          SUPERSEDED SURVEY CONTROL
 DR1632
 DR1632.No superseded survey control is available for this station.
 DR1632
 DR1632_MARKER: DD = SURVEY DISK
 DR1632_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR1632_STAMPING: GIS 23-2 2018
 DR1632_MARK LOGO: MDSHA
 DR1632_PROJECTION: FLUSH
 DR1632_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DR1632_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR1632+STABILITY: SURFACE MOTION
 DR1632_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR1632+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2021
 DR1632
 DR1632  HISTORY     - Date     Condition        Report By
 DR1632  HISTORY     - 2018     MONUMENTED       MDSHA
 DR1632  HISTORY     - 20190411 GOOD             MDSHA
 DR1632  HISTORY     - 20210909 GOOD             MDSHA
 DR1632
 DR1632                          STATION DESCRIPTION
 DR1632
 DR1632'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (EBD)
 DR1632'THE MARK IS LOCATED ABOUT 6.8 MI (10.9 KM) NORTH-NORTHEAST OF MIDDLE
 DR1632'RIVER, 4.3 MI (6.9 KM) WEST OF EDGEWOOD AND 3.9 MI (6.3 KM) NORTHEAST
 DR1632'OF WHITE MARSH.
 DR1632'
 DR1632'TO REACH FROM THE MD 43 US 40 INTERCHANGE, GO NORTHEAST ON US 40 FOR
 DR1632'4.39 MI (7.06 KM) TO A FLEA MARKET AND THE MARK ON THE LEFT.
 DR1632'
 DR1632'IT IS 86.5 FT (26.4 M) NORTHEAST OF THE SOUTHWEST ENTRANCE TO THE FLEA
 DR1632'MARKET, 66.0 FT (20.1 M) SOUTHWEST OF G AND E POLE NUMBER 544584, 57.8
 DR1632'FT (17.6 M) NORTHEAST OF A COMMERCIAL SIGN POLE, 42.8 FT (13.0 M)
 DR1632'NORTHWEST OF THE CENTERLINE OF THE WESTBOUND ROADWAY OF US 40, 21.0 FT
 DR1632'(6.4 M) NORTH OF A BELL SYSTEM MANHOLE AND ABOUT LEVEL WITH THE
 DR1632'HIGHWAY.
 DR1632
 DR1632                          STATION RECOVERY (2021)
 DR1632
 DR1632'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR1632'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7707 ***********************************************************************
 AC7707  DESIGNATION -  GIS 24
 AC7707  PID         -  AC7707
 AC7707  STATE/COUNTY-  MD/BALTIMORE
 AC7707  COUNTRY     -  US
 AC7707  USGS QUAD   -  WHITE MARSH (2016)
 AC7707
 AC7707                         *CURRENT SURVEY CONTROL
 AC7707  ______________________________________________________________________
 AC7707* NAD 83(2011) POSITION- 39 25 06.37448(N) 076 22 40.12789(W)   ADJUSTED
 AC7707* NAD 83(2011) ELLIP HT-   -22.395 (meters)        (06/27/12)   ADJUSTED
 AC7707* NAD 83(2011) EPOCH   -  2010.00
 AC7707* NAVD 88 ORTHO HEIGHT -    10.587 (meters)       34.73  (feet) ADJUSTED
 AC7707  ______________________________________________________________________
 AC7707  GEOID HEIGHT    -        -33.001 (meters)                     GEOID18
 AC7707  NAD 83(2011) X  -  1,162,034.837 (meters)                     COMP
 AC7707  NAD 83(2011) Y  - -4,795,151.123 (meters)                     COMP
 AC7707  NAD 83(2011) Z  -  4,028,297.808 (meters)                     COMP
 AC7707  LAPLACE CORR    -         -4.00  (seconds)                    DEFLEC18
 AC7707  DYNAMIC HEIGHT  -         10.582 (meters)       34.72  (feet) COMP
 AC7707  MODELED GRAVITY -    980,102.8   (mgal)                       NAVD 88
 AC7707
 AC7707  VERT ORDER      -  SECOND    CLASS I
 AC7707
 AC7707  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7707  Standards:
 AC7707         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7707            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7707  -------------------------------------------------------------------
 AC7707  NETWORK    0.46   1.04           0.20   0.17   0.53     -0.02754887
 AC7707  -------------------------------------------------------------------
 AC7707  Click here for local accuracies and other accuracy information.
 AC7707
 AC7707.The horizontal coordinates were established by GPS observations
 AC7707.and adjusted by the National Geodetic Survey in June 2012.
 AC7707
 AC7707.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7707.been affixed to the stable North American tectonic plate. See 
 AC7707.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7707
 AC7707.The horizontal coordinates are valid at the epoch date displayed above
 AC7707.which is a decimal equivalence of Year/Month/Day.
 AC7707
 AC7707.The orthometric height was determined by differential leveling and
 AC7707.adjusted by the NATIONAL GEODETIC SURVEY
 AC7707.in May 2019.
 AC7707
 AC7707.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7707.GEOID18 height accuracy estimate available here.
 AC7707
 AC7707.Click photographs - Photos may exist for this station.
 AC7707
 AC7707.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7707
 AC7707.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7707
 AC7707.The ellipsoidal height was determined by GPS observations
 AC7707.and is referenced to NAD 83.
 AC7707
 AC7707.The dynamic height is computed by dividing the NAVD 88
 AC7707.geopotential number by the normal gravity value computed on the
 AC7707.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7707.degrees latitude (g = 980.6199 gals.).
 AC7707
 AC7707.The modeled gravity was interpolated from observed gravity values.
 AC7707
 AC7707. The following values were computed from the NAD 83(2011) position.
 AC7707
 AC7707;                    North         East     Units Scale Factor Converg.
 AC7707;SPC MD       -   194,642.048   453,578.197   MT  0.99999463   +0 23 25.8
 AC7707;SPC MD       -   638,588.12  1,488,114.47   sFT  0.99999463   +0 23 25.8
 AC7707;UTM  18      - 4,364,118.308   381,396.395   MT  0.99977319   -0 52 29.9
 AC7707
 AC7707!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7707!SPC MD       -   1.00000351  x   0.99999463  =   0.99999814
 AC7707!UTM  18      -   1.00000351  x   0.99977319  =   0.99977670
 AC7707
 AC7707:                Primary Azimuth Mark                     Grid Az
 AC7707:SPC MD       -  GIS 23                                   221 43 13.4
 AC7707:UTM  18      -  GIS 23                                   222 59 09.1
 AC7707
 AC7707_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8139664118(NAD 83)
 AC7707
 AC7707|---------------------------------------------------------------------|
 AC7707| PID    Reference Object                     Distance      Geod. Az  |
 AC7707|                                                           dddmmss.s |
 AC7707| AC7706 GIS 23                              APPROX. 0.7 KM 2220639.2 |
 AC7707|---------------------------------------------------------------------|
 AC7707
 AC7707                          SUPERSEDED SURVEY CONTROL
 AC7707
 AC7707  NAD 83(2007)-  39 25 06.37471(N)    076 22 40.12859(W) AD(2002.00) 0
 AC7707  ELLIP H (02/10/07)  -22.378  (m)                       GP(2002.00)    
 AC7707  ELLIP H (08/30/02)  -22.377  (m)                       GP(       ) 4 2
 AC7707  NAD 83(1991)-  39 25 06.37472(N)    076 22 40.12842(W) AD(       ) 1
 AC7707  ELLIP H (04/08/97)  -22.392  (m)                       GP(       ) 3 1
 AC7707  NAVD 88 (02/11/98)   10.591  (m)           34.75   (f) SUPERSEDED  3 0
 AC7707  NAVD 88 (04/08/97)   10.6    (m)  GEOID93  model used  GPS OBS        
 AC7707
 AC7707.Superseded values are not recommended for survey control.
 AC7707
 AC7707.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7707.See file dsdata.pdf to determine how the superseded data were derived.
 AC7707
 AC7707_MARKER: DD = SURVEY DISK
 AC7707_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7707_STAMPING: GIS-24 1995
 AC7707_MARK LOGO: MD-005
 AC7707_PROJECTION: FLUSH
 AC7707_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7707_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7707+STABILITY: SURFACE MOTION
 AC7707_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7707+SATELLITE: SATELLITE OBSERVATIONS - February 09, 2022
 AC7707
 AC7707  HISTORY     - Date     Condition        Report By
 AC7707  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7707  HISTORY     - 20080228 GOOD             DEWDAV
 AC7707  HISTORY     - 20131012 GOOD             USPSQD
 AC7707  HISTORY     - 20170303 GOOD             JMTMD
 AC7707  HISTORY     - 20190411 GOOD             MDSHA
 AC7707  HISTORY     - 20210429 GOOD             MDSHA
 AC7707  HISTORY     - 20220209 GOOD             MDSHA
 AC7707
 AC7707                          STATION DESCRIPTION
 AC7707
 AC7707'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7707'STATION IS LOCATED ABOUT 12.0 MI (19.3 KM) EAST OF TOWSON AND ABOUT
 AC7707'2.0 MI (3.2 KM) SOUTHWEST OF JOPPA. TO REACH STATION FROM THE ROUTE 40
 AC7707'(PULASKI HIGHWAY) BRIDGE OVER THE GUNPOWDER FALLS AT THE
 AC7707'BALTIMORE-HARFORD COUNTY LINE GO WEST ON ROUTE 40 FOR 0.3 MI (0.5 KM)
 AC7707'TO THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AC7707'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 53.74 FT
 AC7707'(16.38 M) NORTHEAST OF THE SOUTHEAST CORNER OF A CHAIN LINK FENCE
 AC7707'AROUND A LUMBER COMPANY, 30.02 FT (9.15 M) NORTH OF OF THE NORTH END
 AC7707'OF A GUARDRAIL, 12.23 FT (3.73 M) SOUTHEAST OF THE CHAIN LINK FENCE
 AC7707'AND 10.47 FT (3.19 M) NORTHWEST OF THE FACE OF CURB.
 AC7707
 AC7707                          STATION RECOVERY (2008)
 AC7707
 AC7707'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7707'RECOVERED IN GOOD CONDITION.
 AC7707
 AC7707                          STATION RECOVERY (2013)
 AC7707
 AC7707'RECOVERY NOTE BY US POWER SQUADRON 2013
 AC7707'RECOVERED IN GOOD CONDITION.
 AC7707
 AC7707                          STATION RECOVERY (2017)
 AC7707
 AC7707'RECOVERY NOTE BY JMT ENGINEERING 2017 (EAS)
 AC7707'CHECK WITH RTN N-0.04 E+0.07 Z-0.1
 AC7707
 AC7707                          STATION RECOVERY (2019)
 AC7707
 AC7707'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (EBD)
 AC7707'RECOVERED AS DESCRIBED.
 AC7707
 AC7707                          STATION RECOVERY (2021)
 AC7707
 AC7707'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 AC7707'RECOVERED IN GOOD CONDITION.
 AC7707
 AC7707                          STATION RECOVERY (2022)
 AC7707
 AC7707'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 AC7707'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7708 ***********************************************************************
 AC7708  DESIGNATION -  GIS 25
 AC7708  PID         -  AC7708
 AC7708  STATE/COUNTY-  MD/BALTIMORE
 AC7708  COUNTRY     -  US
 AC7708  USGS QUAD   -  WHITE MARSH (2016)
 AC7708
 AC7708                         *CURRENT SURVEY CONTROL
 AC7708  ______________________________________________________________________
 AC7708* NAD 83(2011) POSITION- 39 24 53.43627(N) 076 27 42.07695(W)   ADJUSTED
 AC7708* NAD 83(2011) ELLIP HT-    48.702 (meters)        (06/27/12)   ADJUSTED
 AC7708* NAD 83(2011) EPOCH   -  2010.00
 AC7708* NAVD 88 ORTHO HEIGHT -    81.528 (meters)      267.48  (feet) ADJUSTED
 AC7708  ______________________________________________________________________
 AC7708  GEOID HEIGHT    -        -32.841 (meters)                     GEOID18
 AC7708  NAD 83(2011) X  -  1,155,086.186 (meters)                     COMP
 AC7708  NAD 83(2011) Y  - -4,797,146.791 (meters)                     COMP
 AC7708  NAD 83(2011) Z  -  4,028,034.694 (meters)                     COMP
 AC7708  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 AC7708  DYNAMIC HEIGHT  -         81.485 (meters)      267.34  (feet) COMP
 AC7708  MODELED GRAVITY -    980,103.9   (mgal)                       NAVD 88
 AC7708
 AC7708  VERT ORDER      -  THIRD
 AC7708
 AC7708  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7708  Standards:
 AC7708         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7708            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7708  -------------------------------------------------------------------
 AC7708  NETWORK    0.93   2.76           0.42   0.33   1.41      0.03501165
 AC7708  -------------------------------------------------------------------
 AC7708  Click here for local accuracies and other accuracy information.
 AC7708
 AC7708.The horizontal coordinates were established by GPS observations
 AC7708.and adjusted by the National Geodetic Survey in June 2012.
 AC7708
 AC7708.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7708.been affixed to the stable North American tectonic plate. See 
 AC7708.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7708
 AC7708.The horizontal coordinates are valid at the epoch date displayed above
 AC7708.which is a decimal equivalence of Year/Month/Day.
 AC7708
 AC7708.The orthometric height was determined by differential leveling and
 AC7708.adjusted by the NATIONAL GEODETIC SURVEY
 AC7708.in February 1998.
 AC7708
 AC7708.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7708.GEOID18 height accuracy estimate available here.
 AC7708
 AC7708.Click photographs - Photos may exist for this station.
 AC7708
 AC7708.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7708
 AC7708.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7708
 AC7708.The ellipsoidal height was determined by GPS observations
 AC7708.and is referenced to NAD 83.
 AC7708
 AC7708.The dynamic height is computed by dividing the NAVD 88
 AC7708.geopotential number by the normal gravity value computed on the
 AC7708.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7708.degrees latitude (g = 980.6199 gals.).
 AC7708
 AC7708.The modeled gravity was interpolated from observed gravity values.
 AC7708
 AC7708. The following values were computed from the NAD 83(2011) position.
 AC7708
 AC7708;                    North         East     Units Scale Factor Converg.
 AC7708;SPC MD       -   194,197.135   446,357.957   MT  0.99999404   +0 20 16.3
 AC7708;SPC MD       -   637,128.43  1,464,426.06   sFT  0.99999404   +0 20 16.3
 AC7708;UTM  18      - 4,363,833.061   374,169.609   MT  0.99979494   -0 55 41.5
 AC7708
 AC7708!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7708!SPC MD       -   0.99999236  x   0.99999404  =   0.99998640
 AC7708!UTM  18      -   0.99999236  x   0.99979494  =   0.99978730
 AC7708
 AC7708_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7416963833(NAD 83)
 AC7708
 AC7708                          SUPERSEDED SURVEY CONTROL
 AC7708
 AC7708  NAD 83(2007)-  39 24 53.43650(N)    076 27 42.07761(W) AD(2002.00) 0
 AC7708  ELLIP H (02/10/07)   48.721  (m)                       GP(2002.00)    
 AC7708  ELLIP H (08/30/02)   48.712  (m)                       GP(       ) 4 2
 AC7708  NAD 83(1991)-  39 24 53.43661(N)    076 27 42.07734(W) AD(       ) 1
 AC7708  ELLIP H (04/08/97)   48.699  (m)                       GP(       ) 3 1
 AC7708  NAVD 88 (04/08/97)   81.5    (m)  GEOID93  model used  GPS OBS        
 AC7708
 AC7708.Superseded values are not recommended for survey control.
 AC7708
 AC7708.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7708.See file dsdata.pdf to determine how the superseded data were derived.
 AC7708
 AC7708_MARKER: DD = SURVEY DISK
 AC7708_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7708_STAMPING: NO. GIS-25 1995
 AC7708_MARK LOGO: MD-005
 AC7708_MAGNETIC: P = MARKER IS A STEEL PIPE
 AC7708_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7708+STABILITY: SURFACE MOTION
 AC7708_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7708+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AC7708
 AC7708  HISTORY     - Date     Condition        Report By
 AC7708  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7708
 AC7708                          STATION DESCRIPTION
 AC7708
 AC7708'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7708'STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) EAST OF TOWSON AT PERRY
 AC7708'HALL. TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 32 TO ROUTE 1
 AC7708'(BELAIR ROAD). GO NORTH ON ROUTE 1 FOR 4.1 MILES TO STATION ON THE
 AC7708'LEFT IN A GRASS COVERED CURB ISLAND AT THE ENTRANCE TO A CAR WASH.
 AC7708'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7708'SET FLUSH WITH THE GROUND. IT IS 53.44 FT (16.29 M) SOUTH SOUTH OF THE
 AC7708'SOUTHEAST CORNER OF THE CAR WASH BUILDING, 49.57 FT (15.11 M)
 AC7708'SOUTHWEST OF POWER POLE NO. 236169, 5.81 FT (1.77 M) SOUTHEAST OF THE
 AC7708'NORTHEAST CORNER OF A PARKING LOT, 104.16 FT (31.75 M) NORTHEAST OF
 AC7708'POWER POLE NO. 236170 AND 50.20 FT (15.30 M) NORTHWEST OF THE
 AC7708'CENTERLINE OF ROUTE 1.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7709 ***********************************************************************
 AC7709  DESIGNATION -  GIS 26
 AC7709  PID         -  AC7709
 AC7709  STATE/COUNTY-  MD/BALTIMORE
 AC7709  COUNTRY     -  US
 AC7709  USGS QUAD   -  TOWSON (2016)
 AC7709
 AC7709                         *CURRENT SURVEY CONTROL
 AC7709  ______________________________________________________________________
 AC7709* NAD 83(2011) POSITION- 39 24 58.55487(N) 076 31 42.05828(W)   ADJUSTED
 AC7709* NAD 83(2011) ELLIP HT-    86.990 (meters)        (06/27/12)   ADJUSTED
 AC7709* NAD 83(2011) EPOCH   -  2010.00
 AC7709* NAVD 88 ORTHO HEIGHT -   119.729 (meters)      392.81  (feet) ADJUSTED
 AC7709  ______________________________________________________________________
 AC7709  GEOID HEIGHT    -        -32.716 (meters)                     GEOID18
 AC7709  NAD 83(2011) X  -  1,149,487.647 (meters)                     COMP
 AC7709  NAD 83(2011) Y  - -4,798,418.736 (meters)                     COMP
 AC7709  NAD 83(2011) Z  -  4,028,180.960 (meters)                     COMP
 AC7709  LAPLACE CORR    -         -3.66  (seconds)                    DEFLEC18
 AC7709  DYNAMIC HEIGHT  -        119.665 (meters)      392.60  (feet) COMP
 AC7709  MODELED GRAVITY -    980,096.1   (mgal)                       NAVD 88
 AC7709
 AC7709  VERT ORDER      -  THIRD
 AC7709
 AC7709  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7709  Standards:
 AC7709         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7709            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7709  -------------------------------------------------------------------
 AC7709  NETWORK    0.99   2.08           0.45   0.32   1.06     -0.39270603
 AC7709  -------------------------------------------------------------------
 AC7709  Click here for local accuracies and other accuracy information.
 AC7709
 AC7709.The horizontal coordinates were established by GPS observations
 AC7709.and adjusted by the National Geodetic Survey in June 2012.
 AC7709
 AC7709.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7709.been affixed to the stable North American tectonic plate. See 
 AC7709.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7709
 AC7709.The horizontal coordinates are valid at the epoch date displayed above
 AC7709.which is a decimal equivalence of Year/Month/Day.
 AC7709
 AC7709.The orthometric height was determined by differential leveling and
 AC7709.adjusted by the NATIONAL GEODETIC SURVEY
 AC7709.in February 1998.
 AC7709
 AC7709.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7709.GEOID18 height accuracy estimate available here.
 AC7709
 AC7709.Click photographs - Photos may exist for this station.
 AC7709
 AC7709.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7709
 AC7709.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7709
 AC7709.The ellipsoidal height was determined by GPS observations
 AC7709.and is referenced to NAD 83.
 AC7709
 AC7709.The dynamic height is computed by dividing the NAVD 88
 AC7709.geopotential number by the normal gravity value computed on the
 AC7709.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7709.degrees latitude (g = 980.6199 gals.).
 AC7709
 AC7709.The modeled gravity was interpolated from observed gravity values.
 AC7709
 AC7709. The following values were computed from the NAD 83(2011) position.
 AC7709
 AC7709;                    North         East     Units Scale Factor Converg.
 AC7709;SPC MD       -   194,323.233   440,616.492   MT  0.99999427   +0 17 45.7
 AC7709;SPC MD       -   637,542.14  1,445,589.27   sFT  0.99999427   +0 17 45.7
 AC7709;UTM  18      - 4,364,085.964   368,433.423   MT  0.99981312   -0 58 14.0
 AC7709
 AC7709!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7709!SPC MD       -   0.99998635  x   0.99999427  =   0.99998062
 AC7709!UTM  18      -   0.99998635  x   0.99981312  =   0.99979947
 AC7709
 AC7709:                Primary Azimuth Mark                     Grid Az
 AC7709:SPC MD       -  GIS 27                                   346 27 12.9
 AC7709:UTM  18      -  GIS 27                                   347 43 12.6
 AC7709
 AC7709_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6843364085(NAD 83)
 AC7709
 AC7709|---------------------------------------------------------------------|
 AC7709| PID    Reference Object                     Distance      Geod. Az  |
 AC7709|                                                           dddmmss.s |
 AC7709| AC7710 GIS 27                              420.430 METERS 3464458.6 |
 AC7709|---------------------------------------------------------------------|
 AC7709
 AC7709                          SUPERSEDED SURVEY CONTROL
 AC7709
 AC7709  NAD 83(2007)-  39 24 58.55507(N)    076 31 42.05899(W) AD(2002.00) 0
 AC7709  ELLIP H (02/10/07)   87.008  (m)                       GP(2002.00)    
 AC7709  ELLIP H (08/30/02)   87.012  (m)                       GP(       ) 4 2
 AC7709  NAD 83(1991)-  39 24 58.55537(N)    076 31 42.05881(W) AD(       ) 1
 AC7709  ELLIP H (04/08/97)   86.993  (m)                       GP(       ) 3 1
 AC7709  NAVD 88 (04/08/97)  119.7    (m)  GEOID93  model used  GPS OBS        
 AC7709
 AC7709.Superseded values are not recommended for survey control.
 AC7709
 AC7709.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7709.See file dsdata.pdf to determine how the superseded data were derived.
 AC7709
 AC7709_MARKER: DD = SURVEY DISK
 AC7709_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7709_STAMPING: NO. GIS-26 1995
 AC7709_MARK LOGO: MD-005
 AC7709_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7709_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7709+STABILITY: SURFACE MOTION
 AC7709_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7709+SATELLITE: SATELLITE OBSERVATIONS - November 05, 2014
 AC7709
 AC7709  HISTORY     - Date     Condition        Report By
 AC7709  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7709  HISTORY     - 19971009 GOOD             DMW
 AC7709  HISTORY     - 20020707 GOOD             USPS
 AC7709  HISTORY     - 20141105 GOOD             USPSQD
 AC7709
 AC7709                          STATION DESCRIPTION
 AC7709
 AC7709'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7709'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) NORTHEAST OF TOWSON IN AN
 AC7709'AREA KNOWN AS CUB HILL. TO REACH STATION FROM I-695 (BELTWAY) TAKE
 AC7709'EXIT 29 TO CROMWELL BRIDGE ROAD (ROUTE 567). GO NORTH ON CROMWELL
 AC7709'BRIDGE ROAD FOR 2.7 MI (4.3 KM) TO CUB HILL ROAD. TURN RIGHT ON CUB
 AC7709'HILL ROAD AND GO 0.7 MI (1.1 KM) TO WALTHAM WOODS ROAD. TURN RIGHT ON
 AC7709'WALTHAM WOODS ROAD AND GO 0.2 MI (0.3 KM) TO THE INTERSECTION WITH
 AC7709'MEADOWLAND COURT AND STATION ON THE LEFT BETWEEN THE CURB AND THE
 AC7709'SIDEWALK. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AC7709'MONUMENT SET FLUSH WITH THE GROUND. IT IS 26.46 FT (8.07 M) SOUTHEAST
 AC7709'OF THE CENTERLINE OF WALTHAM WOOD RD, 20.98 FT (6.39 M) SOUTHEAST OF A
 AC7709'WATER VALVE MANHOLE, 68.65 FT (20.925 M) NORTHEAST OF A FIRE HYDRANT,
 AC7709'20.90 FT (6.37 M) NORTHWEST OF A WATER VALVE MANHOLE AND 27.38 FT
 AC7709'(8.35 M) NORTHEAST OF THE CENTERLINE OF MEADOWLAND CT.
 AC7709
 AC7709                          STATION RECOVERY (1997)
 AC7709
 AC7709'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AC7709'RECOVERED AS DESCRIBED.
 AC7709
 AC7709                          STATION RECOVERY (2002)
 AC7709
 AC7709'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 AC7709'RECOVERED AS DESCRIBED
 AC7709
 AC7709                          STATION RECOVERY (2014)
 AC7709
 AC7709'RECOVERY NOTE BY US POWER SQUADRON 2014
 AC7709'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7710 ***********************************************************************
 AC7710  DESIGNATION -  GIS 27
 AC7710  PID         -  AC7710
 AC7710  STATE/COUNTY-  MD/BALTIMORE
 AC7710  COUNTRY     -  US
 AC7710  USGS QUAD   -  TOWSON (2016)
 AC7710
 AC7710                         *CURRENT SURVEY CONTROL
 AC7710  ______________________________________________________________________
 AC7710* NAD 83(2011) POSITION- 39 25 11.82461(N) 076 31 46.08694(W)   ADJUSTED
 AC7710* NAD 83(2011) ELLIP HT-    63.442 (meters)        (06/27/12)   ADJUSTED
 AC7710* NAD 83(2011) EPOCH   -  2010.00
 AC7710* NAVD 88 ORTHO HEIGHT -    96.163 (meters)      315.49  (feet) ADJUSTED
 AC7710  ______________________________________________________________________
 AC7710  GEOID HEIGHT    -        -32.708 (meters)                     GEOID18
 AC7710  NAD 83(2011) X  -  1,149,329.156 (meters)                     COMP
 AC7710  NAD 83(2011) Y  - -4,798,170.786 (meters)                     COMP
 AC7710  NAD 83(2011) Z  -  4,028,482.160 (meters)                     COMP
 AC7710  LAPLACE CORR    -         -3.65  (seconds)                    DEFLEC18
 AC7710  DYNAMIC HEIGHT  -         96.112 (meters)      315.33  (feet) COMP
 AC7710  MODELED GRAVITY -    980,096.4   (mgal)                       NAVD 88
 AC7710
 AC7710  VERT ORDER      -  THIRD
 AC7710
 AC7710  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7710  Standards:
 AC7710         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7710            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7710  -------------------------------------------------------------------
 AC7710  NETWORK    0.65   1.22           0.30   0.22   0.62     -0.08930064
 AC7710  -------------------------------------------------------------------
 AC7710  Click here for local accuracies and other accuracy information.
 AC7710
 AC7710.The horizontal coordinates were established by GPS observations
 AC7710.and adjusted by the National Geodetic Survey in June 2012.
 AC7710
 AC7710.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7710.been affixed to the stable North American tectonic plate. See 
 AC7710.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7710
 AC7710.The horizontal coordinates are valid at the epoch date displayed above
 AC7710.which is a decimal equivalence of Year/Month/Day.
 AC7710
 AC7710.The orthometric height was determined by differential leveling and
 AC7710.adjusted by the NATIONAL GEODETIC SURVEY
 AC7710.in February 1998.
 AC7710
 AC7710.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7710.GEOID18 height accuracy estimate available here.
 AC7710
 AC7710.Click photographs - Photos may exist for this station.
 AC7710
 AC7710.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7710
 AC7710.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7710
 AC7710.The ellipsoidal height was determined by GPS observations
 AC7710.and is referenced to NAD 83.
 AC7710
 AC7710.The dynamic height is computed by dividing the NAVD 88
 AC7710.geopotential number by the normal gravity value computed on the
 AC7710.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7710.degrees latitude (g = 980.6199 gals.).
 AC7710
 AC7710.The modeled gravity was interpolated from observed gravity values.
 AC7710
 AC7710. The following values were computed from the NAD 83(2011) position.
 AC7710
 AC7710;                    North         East     Units Scale Factor Converg.
 AC7710;SPC MD       -   194,731.965   440,518.013   MT  0.99999488   +0 17 43.2
 AC7710;SPC MD       -   638,883.12  1,445,266.18   sFT  0.99999488   +0 17 43.2
 AC7710;UTM  18      - 4,364,496.698   368,344.021   MT  0.99981341   -0 58 16.9
 AC7710
 AC7710!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7710!SPC MD       -   0.99999005  x   0.99999488  =   0.99998493
 AC7710!UTM  18      -   0.99999005  x   0.99981341  =   0.99980346
 AC7710
 AC7710:                Primary Azimuth Mark                     Grid Az
 AC7710:SPC MD       -  GIS 26                                   166 27 12.8
 AC7710:UTM  18      -  GIS 26                                   167 43 12.9
 AC7710
 AC7710_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6834464496(NAD 83)
 AC7710
 AC7710|---------------------------------------------------------------------|
 AC7710| PID    Reference Object                     Distance      Geod. Az  |
 AC7710|                                                           dddmmss.s |
 AC7710| AC7709 GIS 26                              420.430 METERS 1664456.0 |
 AC7710|---------------------------------------------------------------------|
 AC7710
 AC7710                          SUPERSEDED SURVEY CONTROL
 AC7710
 AC7710  NAD 83(2007)-  39 25 11.82482(N)    076 31 46.08761(W) AD(2002.00) 0
 AC7710  ELLIP H (02/10/07)   63.460  (m)                       GP(2002.00)    
 AC7710  ELLIP H (08/30/02)   63.461  (m)                       GP(       ) 4 2
 AC7710  NAD 83(1991)-  39 25 11.82498(N)    076 31 46.08749(W) AD(       ) 1
 AC7710  ELLIP H (04/08/97)   63.449  (m)                       GP(       ) 3 1
 AC7710  NAVD 88 (04/08/97)   96.2    (m)  GEOID93  model used  GPS OBS        
 AC7710
 AC7710.Superseded values are not recommended for survey control.
 AC7710
 AC7710.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7710.See file dsdata.pdf to determine how the superseded data were derived.
 AC7710
 AC7710_MARKER: DD = SURVEY DISK
 AC7710_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7710_STAMPING: NO. GIS-27 1995
 AC7710_MARK LOGO: MD-005
 AC7710_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7710_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7710+STABILITY: SURFACE MOTION
 AC7710_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7710+SATELLITE: SATELLITE OBSERVATIONS - November 05, 2014
 AC7710
 AC7710  HISTORY     - Date     Condition        Report By
 AC7710  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7710  HISTORY     - 19961002 GOOD             MCCRON
 AC7710  HISTORY     - 19971009 GOOD             DMW
 AC7710  HISTORY     - 20020707 GOOD             USPS
 AC7710  HISTORY     - 20141105 GOOD             USPSQD
 AC7710
 AC7710                          STATION DESCRIPTION
 AC7710
 AC7710'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7710'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) NORTHEAST OF TOWSON IN AN
 AC7710'AREA KNOWN AS CUB HILL. TO REACH STATION FROM I-695 (BELTWAY) TAKE
 AC7710'EXIT 29 TO CROMWELL BRIDGE ROAD (ROUTE 567). GO NORTH ON CROMWELL
 AC7710'BRIDGE ROAD FOR 2.7 MI (4.3 KM) TO CUB HILL ROAD. TURN RIGHT ON CUB
 AC7710'HILL ROAD AND GO 0.4 MI (0.6 KM) TO FLAGSTONE DRIVE. TURN RIGHT ON
 AC7710'FLAGSTONE DRIVE AND GO 0.1 MI (0.2 KM) TO THE STATION ON THE LEFT.
 AC7710'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7710'SET FLUSH WITH THE GROUND. IT IS 23.10 FT (7.04 M) SOUTH OF THE SOUTH
 AC7710'EDGE OF A PAVED DRIVE LEADING TO HOUSE NO. 9411, 11.64 FT (3.55 M)
 AC7710'SOUTHEAST OF A SANITARY SEWER MANHOLE, 36.63 FT (11.16 M) SOUTHEAST OF
 AC7710'A FIRE HYDRANT AND 15.70 FT (4.79 M) EAST OF THE CENTERLINE OF
 AC7710'FLAGSTONE DRIVE.
 AC7710
 AC7710                          STATION RECOVERY (1996)
 AC7710
 AC7710'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996
 AC7710'STATION IS LOCATED ABOUT 4.0 MI (6.44 KM) NORTHEAST OF TOWSON IN AN
 AC7710'AREA KNOWN AS CUB HILL. TO REACH STATION FROM I-695 (BELTWAY) TAKE
 AC7710'EXIT 29 TO CROMWELL BRIDGE ROAD (ROUTE 567). GO NORTH ON CROMWELL
 AC7710'BRIDGE ROAD FOR 2.7 MI (4.35 KM) TO CUB HILL ROAD. TURN RIGHT ON CUB
 AC7710'HILL ROAD AND GO 0.4 MI (0.64 KM) TO FLAGSTONE DRIVE. TURN RIGHT ON
 AC7710'FLAGSTONE DRIVE AND GO 0.1 MI (0.16 KM) TO THE STATION ON THE LEFT.
 AC7710'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7710'SET FLUSH WITH THE GROUND. IT IS 23.10 FT (7.04 M) SOUTH OF THE SOUTH
 AC7710'EDGE OF A PAVED DRIVE LEADING TO HOUSE NO. 9411, 11.64 FT (3.55 M)
 AC7710'SOUTHEAST OF A SANITARY SEWER MANHOLE, 36.63 FT (11.16 M) SOUTHEAST OF
 AC7710'A FIRE HYDRANT AND 15.70 FT (4.79 M) EAST OF THE CENTERLINE OF
 AC7710'FLAGSTONE DRIVE.
 AC7710
 AC7710                          STATION RECOVERY (1997)
 AC7710
 AC7710'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AC7710'RECOVERED AS DESCRIBED.
 AC7710
 AC7710                          STATION RECOVERY (2002)
 AC7710
 AC7710'RECOVERY NOTE BY US POSTAL SERVICE 2002 (JKL)
 AC7710'RECOVERED AS DESCRIBED
 AC7710
 AC7710                          STATION RECOVERY (2014)
 AC7710
 AC7710'RECOVERY NOTE BY US POWER SQUADRON 2014
 AC7710'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7711 ***********************************************************************
 AC7711  DESIGNATION -  GIS 28
 AC7711  PID         -  AC7711
 AC7711  STATE/COUNTY-  MD/BALTIMORE
 AC7711  COUNTRY     -  US
 AC7711  USGS QUAD   -  BALTIMORE WEST (2016)
 AC7711
 AC7711                         *CURRENT SURVEY CONTROL
 AC7711  ______________________________________________________________________
 AC7711* NAD 83(2011) POSITION- 39 16 34.21297(N) 076 42 27.26092(W)   ADJUSTED
 AC7711* NAD 83(2011) ELLIP HT-    73.633 (meters)        (06/27/12)   ADJUSTED
 AC7711* NAD 83(2011) EPOCH   -  2010.00
 AC7711* NAVD 88 ORTHO HEIGHT -   106.1   (meters)      348.    (feet) GPS OBS
 AC7711  ______________________________________________________________________
 AC7711  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AC7711  GEOID HEIGHT    -        -33.327 (meters)                     GEOID93
 AC7711  GEOID HEIGHT    -        -32.440 (meters)                     GEOID18
 AC7711  NAD 83(2011) X  -  1,136,737.371 (meters)                     COMP
 AC7711  NAD 83(2011) Y  - -4,811,577.851 (meters)                     COMP
 AC7711  NAD 83(2011) Z  -  4,016,144.263 (meters)                     COMP
 AC7711  LAPLACE CORR    -         -6.99  (seconds)                    DEFLEC18
 AC7711
 AC7711  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7711  Standards:
 AC7711         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7711            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7711  -------------------------------------------------------------------
 AC7711  NETWORK    0.48   0.90           0.21   0.18   0.46     -0.10412330
 AC7711  -------------------------------------------------------------------
 AC7711  Click here for local accuracies and other accuracy information.
 AC7711
 AC7711.The horizontal coordinates were established by GPS observations
 AC7711.and adjusted by the National Geodetic Survey in June 2012.
 AC7711
 AC7711.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7711.been affixed to the stable North American tectonic plate. See 
 AC7711.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7711
 AC7711.The horizontal coordinates are valid at the epoch date displayed above
 AC7711.which is a decimal equivalence of Year/Month/Day.
 AC7711
 AC7711.The orthometric height was determined by GPS observations and a
 AC7711.high-resolution geoid model.
 AC7711
 AC7711.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7711.GEOID18 height accuracy estimate available here.
 AC7711
 AC7711.Click photographs - Photos may exist for this station.
 AC7711
 AC7711.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7711
 AC7711.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7711
 AC7711.The ellipsoidal height was determined by GPS observations
 AC7711.and is referenced to NAD 83.
 AC7711
 AC7711. The following values were computed from the NAD 83(2011) position.
 AC7711
 AC7711;                    North         East     Units Scale Factor Converg.
 AC7711;SPC MD       -   178,705.338   425,232.480   MT  0.99997421   +0 11 00.7
 AC7711;SPC MD       -   586,302.43  1,395,116.89   sFT  0.99997421   +0 11 00.7
 AC7711;UTM  18      - 4,348,813.900   352,710.447   MT  0.99986712   -1 04 52.3
 AC7711
 AC7711!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7711!SPC MD       -   0.99998845  x   0.99997421  =   0.99996266
 AC7711!UTM  18      -   0.99998845  x   0.99986712  =   0.99985557
 AC7711
 AC7711_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5271048813(NAD 83)
 AC7711
 AC7711|---------------------------------------------------------------------|
 AC7711| PID    Reference Object                     Distance      Geod. Az  |
 AC7711|                                                           dddmmss.s |
 AC7711| AI8096 X 741                               315.957 METERS 33615     |
 AC7711|---------------------------------------------------------------------|
 AC7711
 AC7711                          SUPERSEDED SURVEY CONTROL
 AC7711
 AC7711  NAD 83(2007)-  39 16 34.21318(N)    076 42 27.26174(W) AD(2002.00) 0
 AC7711  ELLIP H (02/10/07)   73.648  (m)                       GP(2002.00)    
 AC7711  ELLIP H (08/30/02)   73.649  (m)                       GP(       ) 4 2
 AC7711  NAD 83(1991)-  39 16 34.21316(N)    076 42 27.26188(W) AD(       ) 1
 AC7711  ELLIP H (04/08/97)   73.591  (m)                       GP(       ) 3 1
 AC7711
 AC7711.Superseded values are not recommended for survey control.
 AC7711
 AC7711.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7711.See file dsdata.pdf to determine how the superseded data were derived.
 AC7711
 AC7711_MARKER: DD = SURVEY DISK
 AC7711_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7711_STAMPING: NO GIS-28 1995
 AC7711_MARK LOGO: MD-005
 AC7711_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AC7711_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7711+STABILITY: SURFACE MOTION
 AC7711_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7711+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2011
 AC7711
 AC7711  HISTORY     - Date     Condition        Report By
 AC7711  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7711  HISTORY     - 19961002 GOOD             MCCRON
 AC7711  HISTORY     - 19980106 GOOD             DMW
 AC7711  HISTORY     - 19990401 GOOD             AMTHOM
 AC7711  HISTORY     - 20020628 GOOD             DMW
 AC7711  HISTORY     - 20030921 GOOD             USPSQD
 AC7711  HISTORY     - 20060113 GOOD             GPSSS
 AC7711  HISTORY     - 20110227 GOOD             NGS
 AC7711
 AC7711                          STATION DESCRIPTION
 AC7711
 AC7711'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7711'STATION IS LOCATED ABOUT 5.5 MI (8.9 KM) SOUTHWEST OF THE CENTER OF
 AC7711'BALTIMORE ON THE GROUNDS OF THE BALTIMORE NATIONAL CEMETERY. TO REACH
 AC7711'STATION FROM I-695 (BELTWAY) TAKE EXIT 13 TO (ROUTE 144)FREDERICK
 AC7711'ROAD. FROM THE FREDERICK RD OVERPASS BRIDGE OVER I-695 GO EASTERLY ON
 AC7711'FREDERICK ROAD FOR 0.8 MI (1.3 KM) TO THE ENTRANCE ROAD TO THE
 AC7711'CEMETERY. TURN RIGHT INTO THE CEMETERY AND FOLLOW THE ENTRANCE ROAD
 AC7711'SOUTHERLY BEARING RIGHT PAST THE OFFICE FOR 0.2 MILES TO THE ENTRANCE
 AC7711'TO A PARKING LOT AND THE STATION ON THE RIGHT IN A GRASSY CURB ISLAND
 AC7711'BETWEEN THE ROAD AND THE PARKING LOT. STATION IS SET IN THE TOP OF A
 AC7711'10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AC7711'62.00 FT (18.90 M) SOUTH OF A GRANITE STONE MARKED SECTION B, 14.00 FT
 AC7711'(4.27 M) WEST OF THE FACE OF CURB ALONG THE ROAD AND 58.60 FT (17.86
 AC7711'M) NORTH NORTHEAST OF THE END OF A ROW OF CEDAR TREES.
 AC7711
 AC7711                          STATION RECOVERY (1996)
 AC7711
 AC7711'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996
 AC7711'STATION IS LOCATED ABOUT 5.5 MI (8.85 KM) SOUTHWEST OF THE CENTER OF
 AC7711'BALTIMORE ON THE GROUNDS OF THE BALTIMORE NATIONAL CEMETERY. TO REACH
 AC7711'STATION FROM I-695 (BELTWAY) TAKE EXIT 13 TO (ROUTE 144) FREDERICK
 AC7711'ROAD. FROM THE FREDERICK RD OVERPASS BRIDGE OVER I-695 GO EASTERLY ON
 AC7711'FREDERICK ROAD FOR 0.8 MI (1.29 KM) TO THE ENTRANCE ROAD TO THE
 AC7711'CEMETERY. TURN RIGHT INTO THE CEMETERY AND FOLLOW THE ENTRANCE ROAD
 AC7711'SOUTHERLY BEARING RIGHT PAST THE OFFICE FOR 0.2 MILES TO THE ENTRANCE
 AC7711'TO A PARKING LOT AND THE STATION ON THE RIGHT IN A GRASSY CURB ISLAND
 AC7711'BETWEEN THE ROAD AND THE PARKING LOT. STATION IS SET IN THE TOP OF A
 AC7711'10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AC7711'62.00 FT (18.90 M) SOUTH OF A GRANITE STONE MARKED SECTION B, 14.00 FT
 AC7711'(4.27 M) WEST OF THE FACE OF CURB ALONG THE ROAD AND 58.60 FT (17.86
 AC7711'M) NORTH NORTHEAST OF THE END OF A ROW OF CEDAR TREES.
 AC7711
 AC7711                          STATION RECOVERY (1998)
 AC7711
 AC7711'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 AC7711'RECOVERED AS DESCRIBED.
 AC7711
 AC7711                          STATION RECOVERY (1999)
 AC7711
 AC7711'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 1999
 AC7711'RECOVERED AS DESCRIBED.
 AC7711
 AC7711                          STATION RECOVERY (2002)
 AC7711
 AC7711'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (DMM)
 AC7711'RECOVERED IN GOOD CONDITION.
 AC7711
 AC7711                          STATION RECOVERY (2003)
 AC7711
 AC7711'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 AC7711'RECOVERED IN GOOD CONDITION.  NOTE-- THE PARKING LOT IS FILLED WITH
 AC7711'RUBBLE CONCRETE.
 AC7711
 AC7711                          STATION RECOVERY (2006)
 AC7711
 AC7711'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (CJC)
 AC7711'RECOVERED IN GOOD CONDITION.
 AC7711
 AC7711                          STATION RECOVERY (2011)
 AC7711
 AC7711'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 AC7711'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7712 ***********************************************************************
 AC7712  DESIGNATION -  GIS 29
 AC7712  PID         -  AC7712
 AC7712  STATE/COUNTY-  MD/BALTIMORE
 AC7712  COUNTRY     -  US
 AC7712  USGS QUAD   -  SPARROWS POINT (2016)
 AC7712
 AC7712                         *CURRENT SURVEY CONTROL
 AC7712  ______________________________________________________________________
 AC7712* NAD 83(2011) POSITION- 39 12 07.93155(N) 076 26 27.17425(W)   ADJUSTED
 AC7712* NAD 83(2011) ELLIP HT-   -31.608 (meters)        (06/27/12)   ADJUSTED
 AC7712* NAD 83(2011) EPOCH   -  2010.00
 AC7712* NAVD 88 ORTHO HEIGHT -     1.431 (meters)        4.69  (feet) ADJUSTED
 AC7712  ______________________________________________________________________
 AC7712  GEOID HEIGHT    -        -33.054 (meters)                     GEOID18
 AC7712  NAD 83(2011) X  -  1,160,319.827 (meters)                     COMP
 AC7712  NAD 83(2011) Y  - -4,811,205.120 (meters)                     COMP
 AC7712  NAD 83(2011) Z  -  4,009,717.512 (meters)                     COMP
 AC7712  LAPLACE CORR    -         -0.93  (seconds)                    DEFLEC18
 AC7712  DYNAMIC HEIGHT  -          1.430 (meters)        4.69  (feet) COMP
 AC7712  MODELED GRAVITY -    980,108.4   (mgal)                       NAVD 88
 AC7712
 AC7712  VERT ORDER      -  THIRD
 AC7712
 AC7712  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7712  Standards:
 AC7712         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7712            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7712  -------------------------------------------------------------------
 AC7712  NETWORK    0.68   1.59           0.31   0.23   0.81     -0.00919850
 AC7712  -------------------------------------------------------------------
 AC7712  Click here for local accuracies and other accuracy information.
 AC7712
 AC7712.The horizontal coordinates were established by GPS observations
 AC7712.and adjusted by the National Geodetic Survey in June 2012.
 AC7712
 AC7712.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7712.been affixed to the stable North American tectonic plate. See 
 AC7712.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7712
 AC7712.The horizontal coordinates are valid at the epoch date displayed above
 AC7712.which is a decimal equivalence of Year/Month/Day.
 AC7712
 AC7712.The orthometric height was determined by differential leveling and
 AC7712.adjusted by the NATIONAL GEODETIC SURVEY
 AC7712.in February 1998.
 AC7712
 AC7712.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7712.GEOID18 height accuracy estimate available here.
 AC7712
 AC7712.Click photographs - Photos may exist for this station.
 AC7712
 AC7712.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7712
 AC7712.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7712
 AC7712.The ellipsoidal height was determined by GPS observations
 AC7712.and is referenced to NAD 83.
 AC7712
 AC7712.The dynamic height is computed by dividing the NAVD 88
 AC7712.geopotential number by the normal gravity value computed on the
 AC7712.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7712.degrees latitude (g = 980.6199 gals.).
 AC7712
 AC7712.The modeled gravity was interpolated from observed gravity values.
 AC7712
 AC7712. The following values were computed from the NAD 83(2011) position.
 AC7712
 AC7712;                    North         East     Units Scale Factor Converg.
 AC7712;SPC MD       -   170,601.239   448,294.304   MT  0.99996603   +0 21 03.3
 AC7712;SPC MD       -   559,714.23  1,470,778.90   sFT  0.99996603   +0 21 03.3
 AC7712;UTM  18      - 4,340,204.593   375,584.757   MT  0.99979059   -0 54 39.0
 AC7712
 AC7712!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7712!SPC MD       -   1.00000496  x   0.99996603  =   0.99997099
 AC7712!UTM  18      -   1.00000496  x   0.99979059  =   0.99979555
 AC7712
 AC7712_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7558440204(NAD 83)
 AC7712
 AC7712                          SUPERSEDED SURVEY CONTROL
 AC7712
 AC7712  NAD 83(2007)-  39 12 07.93183(N)    076 26 27.17506(W) AD(2002.00) 0
 AC7712  ELLIP H (02/10/07)  -31.592  (m)                       GP(2002.00)    
 AC7712  ELLIP H (08/30/02)  -31.576  (m)                       GP(       ) 4 2
 AC7712  NAD 83(1991)-  39 12 07.93175(N)    076 26 27.17453(W) AD(       ) 1
 AC7712  ELLIP H (04/08/97)  -31.658  (m)                       GP(       ) 3 1
 AC7712  NAVD 88 (04/08/97)    1.5    (m)  GEOID93  model used  GPS OBS        
 AC7712
 AC7712.Superseded values are not recommended for survey control.
 AC7712
 AC7712.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7712.See file dsdata.pdf to determine how the superseded data were derived.
 AC7712
 AC7712_MARKER: DD = SURVEY DISK
 AC7712_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7712_STAMPING: NO. GIS-29
 AC7712_MARK LOGO: MD-005
 AC7712_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7712_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7712+STABILITY: SURFACE MOTION
 AC7712_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7712+SATELLITE: SATELLITE OBSERVATIONS - September 26, 2012
 AC7712
 AC7712  HISTORY     - Date     Condition        Report By
 AC7712  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7712  HISTORY     - 20051220 GOOD             GEOCAC
 AC7712  HISTORY     - 20080228 GOOD             DEWDAV
 AC7712  HISTORY     - 20090629 GOOD             MD-005
 AC7712  HISTORY     - 20120926 GOOD             WOOLPT
 AC7712
 AC7712                          STATION DESCRIPTION
 AC7712
 AC7712'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7712'STATION IS LOCATED ABOUT 9.0 MI (14.5 KM) SOUTHEAST OF THE CENTER OF
 AC7712'BALTIMORE AT FORT HOWARD PARK. TO REACH STATION FROM I-695 (BELTWAY)
 AC7712'TAKE EXIT 42 AND FOLLOW RAMP TO NORTH POINT ROAD (RT 20) TOWARD FORT
 AC7712'HOWARD. AT STOP SIGN TURN RIGHT ON NORTH POINT ROAD AND GO 3.65 MI
 AC7712'(5.87 KM) TO THE ENTRANCE TO FORT HOWARD VA HOSPITAL AND FORT HOWARD
 AC7712'PARK. AT ENTRANCE TURN LEFT INTO THE PARK AND FOLLOW PARK ROAD FOR
 AC7712'0.25 MI (0.40 KM) TO A CURVE TO THE RIGHT AND THE STATION ON THE LEFT.
 AC7712'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7712'SET FLUSH WITH THE GROUND. IT IS 143.05 FT (43.60 M) SOUTH OF THE
 AC7712'SOUTHWESTERNMOST CORNER OF A PIER ON SHALLOW CREEK, 28.95 FT (8.82 M)
 AC7712'WEST OF A CHAIN LINK FENCE, 20.40 FT (6.22 M) NORTHWEST OF A NO
 AC7712'PARKING SIGN AND 19.40 FT (5.91 M) EAST OF THE EDGE OF PAVE OF THE
 AC7712'PARK ROAD.
 AC7712
 AC7712                          STATION RECOVERY (2005)
 AC7712
 AC7712'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 AC7712'RECOVERED IN GOOD CONDITION.
 AC7712
 AC7712                          STATION RECOVERY (2008)
 AC7712
 AC7712'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7712'RECOVERED IN GOOD CONDITION.
 AC7712
 AC7712                          STATION RECOVERY (2009)
 AC7712
 AC7712'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AC7712'RECOVERED IN GOOD CONDITION.
 AC7712
 AC7712                          STATION RECOVERY (2012)
 AC7712
 AC7712'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 AC7712'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7686 ***********************************************************************
 AC7686  DESIGNATION -  GIS 3
 AC7686  PID         -  AC7686
 AC7686  STATE/COUNTY-  MD/BALTIMORE
 AC7686  COUNTRY     -  US
 AC7686  USGS QUAD   -  SPARROWS POINT (2016)
 AC7686
 AC7686                         *CURRENT SURVEY CONTROL
 AC7686  ______________________________________________________________________
 AC7686* NAD 83(2011) POSITION- 39 13 49.02114(N) 076 23 59.67962(W)   ADJUSTED
 AC7686* NAD 83(2011) ELLIP HT-   -31.860 (meters)        (06/27/12)   ADJUSTED
 AC7686* NAD 83(2011) EPOCH   -  2010.00
 AC7686* NAVD 88 ORTHO HEIGHT -     1.190 (meters)        3.90  (feet) ADJUSTED
 AC7686  ______________________________________________________________________
 AC7686  GEOID HEIGHT    -        -33.055 (meters)                     GEOID18
 AC7686  NAD 83(2011) X  -  1,163,296.382 (meters)                     COMP
 AC7686  NAD 83(2011) Y  - -4,808,458.238 (meters)                     COMP
 AC7686  NAD 83(2011) Z  -  4,012,132.656 (meters)                     COMP
 AC7686  LAPLACE CORR    -         -1.63  (seconds)                    DEFLEC18
 AC7686  DYNAMIC HEIGHT  -          1.189 (meters)        3.90  (feet) COMP
 AC7686  MODELED GRAVITY -    980,119.3   (mgal)                       NAVD 88
 AC7686
 AC7686  VERT ORDER      -  THIRD
 AC7686
 AC7686  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7686  Standards:
 AC7686         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7686            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7686  -------------------------------------------------------------------
 AC7686  NETWORK    0.67   1.23           0.29   0.26   0.63      0.00497468
 AC7686  -------------------------------------------------------------------
 AC7686  Click here for local accuracies and other accuracy information.
 AC7686
 AC7686.The horizontal coordinates were established by GPS observations
 AC7686.and adjusted by the National Geodetic Survey in June 2012.
 AC7686
 AC7686.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7686.been affixed to the stable North American tectonic plate. See 
 AC7686.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7686
 AC7686.The horizontal coordinates are valid at the epoch date displayed above
 AC7686.which is a decimal equivalence of Year/Month/Day.
 AC7686
 AC7686.The orthometric height was determined by differential leveling and
 AC7686.adjusted by the NATIONAL GEODETIC SURVEY
 AC7686.in February 1998.
 AC7686
 AC7686.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7686.GEOID18 height accuracy estimate available here.
 AC7686
 AC7686.Click photographs - Photos may exist for this station.
 AC7686
 AC7686.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7686
 AC7686.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7686
 AC7686.The ellipsoidal height was determined by GPS observations
 AC7686.and is referenced to NAD 83.
 AC7686
 AC7686.The dynamic height is computed by dividing the NAVD 88
 AC7686.geopotential number by the normal gravity value computed on the
 AC7686.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7686.degrees latitude (g = 980.6199 gals.).
 AC7686
 AC7686.The modeled gravity was interpolated from observed gravity values.
 AC7686
 AC7686. The following values were computed from the NAD 83(2011) position.
 AC7686
 AC7686;                    North         East     Units Scale Factor Converg.
 AC7686;SPC MD       -   173,741.019   451,812.644   MT  0.99996894   +0 22 35.9
 AC7686;SPC MD       -   570,015.33  1,482,321.98   sFT  0.99996894   +0 22 35.9
 AC7686;UTM  18      - 4,343,265.568   379,170.737   MT  0.99977976   -0 53 07.7
 AC7686
 AC7686!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7686!SPC MD       -   1.00000500  x   0.99996894  =   0.99997394
 AC7686!UTM  18      -   1.00000500  x   0.99977976  =   0.99978476
 AC7686
 AC7686_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7917043265(NAD 83)
 AC7686
 AC7686                          SUPERSEDED SURVEY CONTROL
 AC7686
 AC7686  NAD 83(2007)-  39 13 49.02142(N)    076 23 59.68041(W) AD(2002.00) 0
 AC7686  ELLIP H (02/10/07)  -31.843  (m)                       GP(2002.00)    
 AC7686  ELLIP H (08/30/02)  -31.826  (m)                       GP(       ) 4 2
 AC7686  NAD 83(1991)-  39 13 49.02111(N)    076 23 59.67997(W) AD(       ) 1
 AC7686  ELLIP H (04/08/97)  -31.907  (m)                       GP(       ) 3 1
 AC7686  NAVD 88 (04/08/97)    1.2    (m)  GEOID93  model used  GPS OBS        
 AC7686
 AC7686.Superseded values are not recommended for survey control.
 AC7686
 AC7686.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7686.See file dsdata.pdf to determine how the superseded data were derived.
 AC7686
 AC7686_MARKER: DD = SURVEY DISK
 AC7686_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7686_STAMPING: NO. GIS-3 1995
 AC7686_MARK LOGO: MD-005
 AC7686_PROJECTION: FLUSH
 AC7686_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7686_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7686+STABILITY: SURFACE MOTION
 AC7686_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7686+SATELLITE: SATELLITE OBSERVATIONS - June 04, 2020
 AC7686
 AC7686  HISTORY     - Date     Condition        Report By
 AC7686  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7686  HISTORY     - 20040406 GOOD             URS
 AC7686  HISTORY     - 20080228 GOOD             DEWDAV
 AC7686  HISTORY     - 20090512 GOOD             MD-005
 AC7686  HISTORY     - 20121204 GOOD             USPSQD
 AC7686  HISTORY     - 20200604 GOOD             MD-005
 AC7686
 AC7686                          STATION DESCRIPTION
 AC7686
 AC7686'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7686'STATION IS LOCATED ABOUT 10.0 MI (16.1 KM) SOUTHEAST OF THE CENTER OF
 AC7686'BALTIMORE AT RAMONA BEACH. TO REACH THE STATION FROM I-695 (BELTWAY)
 AC7686'TAKE EXIT 42 TO NORTH POINT ROAD (RT 20) AND FOLLOW EXIT RAMP TO STOP
 AC7686'SIGN (TOWARD FORT HOWARD). TURN RIGHT AND GO SOUTH ON NORTH POINT ROAD
 AC7686'FOR 1.6 MI (2.6 KM) TO THE INTERSECTION WITH MILLERS ISLAND ROAD. TURN
 AC7686'LEFT ON MILLERS ISLAND RD AND GO 1.4 MI (2.3 KM) TO THE INTERSECTION
 AC7686'WITH MILLERS ISLAND BLVD. TURN RIGHT ON MILLERS ISLAND BLVD AND GO 0.4
 AC7686'MI (0.6 KM) TO STATION ON LEFT. STATION MARK IS SET IN THE TOP OF A 10
 AC7686'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 10.30
 AC7686'FT (3.14 M) SOUTH OF POWER POLE NO. 542931, 12.00 FT (3.66 M) WEST OF
 AC7686'A FIRE HYDRANT, 18.40 FT (5.61 M) NORTH OF THE CENTERLINE OF THE ROAD
 AC7686'AND 24.70 FT (7.53 M) SOUTHEAST OF THE CORNER OF A CHAINLINK FENCE.
 AC7686
 AC7686                          STATION RECOVERY (2004)
 AC7686
 AC7686'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 AC7686'OPPOSITE HOUSE NUMBER 9101
 AC7686
 AC7686                          STATION RECOVERY (2008)
 AC7686
 AC7686'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7686'RECOVERED IN GOOD CONDITION.
 AC7686
 AC7686                          STATION RECOVERY (2009)
 AC7686
 AC7686'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AC7686'RECOVERED IN GOOD CONDITION.
 AC7686
 AC7686                          STATION RECOVERY (2012)
 AC7686
 AC7686'RECOVERY NOTE BY US POWER SQUADRON 2012
 AC7686'RECOVERED IN GOOD CONDITION.
 AC7686
 AC7686                          STATION RECOVERY (2020)
 AC7686
 AC7686'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (JMS)
 AC7686'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6418 ***********************************************************************
 DG6418  DESIGNATION -  GIS 3
 DG6418  PID         -  DG6418
 DG6418  STATE/COUNTY-  MD/TALBOT
 DG6418  COUNTRY     -  US
 DG6418  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6418
 DG6418                         *CURRENT SURVEY CONTROL
 DG6418  ______________________________________________________________________
 DG6418* NAD 83(1986) POSITION- 38 46 34.66   (N) 076 12 20.30   (W)   HD_HELD1
 DG6418* NAVD 88 ORTHO HEIGHT -     2.645 (meters)        8.68  (feet) ADJUSTED
 DG6418  ______________________________________________________________________
 DG6418  GEOID HEIGHT    -        -34.396 (meters)                     GEOID18
 DG6418  DYNAMIC HEIGHT  -          2.643 (meters)        8.67  (feet) COMP
 DG6418  MODELED GRAVITY -    980,043.1   (mgal)                       NAVD 88
 DG6418
 DG6418  VERT ORDER      -  SECOND    CLASS I
 DG6418
 DG6418.The horizontal coordinates were determined by differentially corrected
 DG6418.hand held GPS observations or other comparable positioning techniques
 DG6418.and have an estimated accuracy of +/- 3 meters.
 DG6418
 DG6418.The orthometric height was determined by differential leveling and
 DG6418.adjusted by the NATIONAL GEODETIC SURVEY
 DG6418.in September 2004.
 DG6418
 DG6418.No vertical observational check was made to the station.
 DG6418
 DG6418.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6418.GEOID18 height accuracy estimate available here.
 DG6418
 DG6418.Click photographs - Photos may exist for this station.
 DG6418
 DG6418.The dynamic height is computed by dividing the NAVD 88
 DG6418.geopotential number by the normal gravity value computed on the
 DG6418.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6418.degrees latitude (g = 980.6199 gals.).
 DG6418
 DG6418.The modeled gravity was interpolated from observed gravity values.
 DG6418
 DG6418;                    North         East    Units  Estimated Accuracy
 DG6418;SPC MD       -   123,473.4     469,024.6     MT  (+/- 3 meters HH1 GPS) 
 DG6418
 DG6418_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9527192642(NAD 83)
 DG6418
 DG6418                          SUPERSEDED SURVEY CONTROL
 DG6418
 DG6418.No superseded survey control is available for this station.
 DG6418
 DG6418_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6418_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6418_STAMPING: NO GIS 3 1995
 DG6418_MARK LOGO: MD1370
 DG6418_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6418_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6418+STABILITY: SURFACE MOTION
 DG6418_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6418+SATELLITE: SATELLITE OBSERVATIONS - October 01, 2014
 DG6418
 DG6418  HISTORY     - Date     Condition        Report By
 DG6418  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6418  HISTORY     - 19991213 GOOD             MDSHA
 DG6418  HISTORY     - 20141001 GOOD             INDIV
 DG6418
 DG6418                          STATION DESCRIPTION
 DG6418
 DG6418'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6418'THE MARK IS LOCATED ABOUT 2.8 MI (4.51 KM) NORTH-NORTHWEST OF ROYAL
 DG6418'OAK, 2.2 MI (3.54 KM) NORTHWEST OF NEWCOMB AND 1.2 MI (1.93 KM)
 DG6418'EAST-SOUTHEAST OF ST MICHAELS.  TO REACH THE MARK FROM THE POST OFFICE
 DG6418'IN SAINT MICHAELS, PROCEED SOUTHEAST ALONG MARYLAND STATE HIGHWAY 33
 DG6418'FOR 1.0 MILES (1.6 KM) TO LINCOLN AVENUE.  TURN LEFT AND PROCEED
 DG6418'NORTHEAST ALONG LINCOLN AVENUE FOR 0.4 MILES (0.6 KM) TO A
 DG6418'T-INTERSECTION WITH RIVERVIEW TERRACE, TURN RIGHT AND PROCEED
 DG6418'SOUTHEAST ALONG RIVERVIEW TERRACE FOR 0.1 MILES (0.2 KM) TO THE MARK
 DG6418'ON THE RIGHT, IN A TRIANGLE SHAPED GRASS AREA CREATED BY TENNANT
 DG6418'CIRCLE.  IT IS 14.0 FEET (4.3 M) SOUTHWEST OF THE CENTER LINE OF
 DG6418'RIVERVIEW TERRACE, 23.1 FEET (7.0 M) EAST OF THE CENTER OF TENNANT
 DG6418'CIRCLE, 57.3 FEET (17.5 M) WEST OF POWER POLE NUMBER 29673-08268, 12.7
 DG6418'FEET (3.9 M) NORTHWEST OF THE NORTHWESTERLY MOST WATER VALUE AND 23.5
 DG6418'FEET (7.2 M) SOUTH OF THE JUNCTION OF RIVERVIEW TERRACE AND LANDING
 DG6418'ROAD LEADING NORTHEAST.  IT IS A TOSM DISK SET IN THE TOP OF A 7-INCH
 DG6418'(18 CM) ROUND CONCRETE POST FLUSH WITH THE GROUND AND LEVEL WITH THE
 DG6418'SURFACE OF THE ROAD.
 DG6418
 DG6418                          STATION RECOVERY (2014)
 DG6418
 DG6418'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (HBH)
 DG6418'RECOVERED IN GOOD CONDITION.
 DG6418'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7713 ***********************************************************************
 AC7713  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7713  DESIGNATION -  GIS 30
 AC7713  PID         -  AC7713
 AC7713  STATE/COUNTY-  MD/BALTIMORE
 AC7713  COUNTRY     -  US
 AC7713  USGS QUAD   -  PHOENIX (2016)
 AC7713
 AC7713                         *CURRENT SURVEY CONTROL
 AC7713  ______________________________________________________________________
 AC7713* NAD 83(2011) POSITION- 39 35 40.22254(N) 076 34 08.47005(W)   ADJUSTED
 AC7713* NAD 83(2011) ELLIP HT-   171.518 (meters)        (06/27/12)   ADJUSTED
 AC7713* NAD 83(2011) EPOCH   -  2010.00
 AC7713* NAVD 88 ORTHO HEIGHT -   203.93  (meters)      669.1   (feet) GPS OBS
 AC7713  ______________________________________________________________________
 AC7713  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AC7713  GEOID HEIGHT    -        -32.415 (meters)                     GEOID99
 AC7713  GEOID HEIGHT    -        -32.402 (meters)                     GEOID18
 AC7713  NAD 83(2011) X  -  1,143,172.333 (meters)                     COMP
 AC7713  NAD 83(2011) Y  - -4,787,052.018 (meters)                     COMP
 AC7713  NAD 83(2011) Z  -  4,043,503.713 (meters)                     COMP
 AC7713  LAPLACE CORR    -         -2.64  (seconds)                    DEFLEC18
 AC7713
 AC7713  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7713  Standards:
 AC7713         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7713            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7713  -------------------------------------------------------------------
 AC7713  NETWORK    0.55   0.92           0.25   0.19   0.47     -0.07644310
 AC7713  -------------------------------------------------------------------
 AC7713  Click here for local accuracies and other accuracy information.
 AC7713
 AC7713.The horizontal coordinates were established by GPS observations
 AC7713.and adjusted by the National Geodetic Survey in June 2012.
 AC7713
 AC7713.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7713.been affixed to the stable North American tectonic plate. See 
 AC7713.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7713
 AC7713.The horizontal coordinates are valid at the epoch date displayed above
 AC7713.which is a decimal equivalence of Year/Month/Day.
 AC7713
 AC7713.The orthometric height was determined by GPS observations and a
 AC7713.high-resolution geoid model using precise GPS observation and
 AC7713.processing techniques.
 AC7713
 AC7713.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7713.GEOID18 height accuracy estimate available here.
 AC7713
 AC7713.Click photographs - Photos may exist for this station.
 AC7713
 AC7713.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7713
 AC7713.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7713
 AC7713.The ellipsoidal height was determined by GPS observations
 AC7713.and is referenced to NAD 83.
 AC7713
 AC7713. The following values were computed from the NAD 83(2011) position.
 AC7713
 AC7713;                    North         East     Units Scale Factor Converg.
 AC7713;SPC MD       -   214,095.142   437,020.773   MT  1.00002848   +0 16 13.8
 AC7713;SPC MD       -   702,410.48  1,433,792.32   sFT  1.00002848   +0 16 13.8
 AC7713;UTM  18      - 4,383,928.818   365,276.936   MT  0.99982346   -1 00 00.6
 AC7713
 AC7713!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7713!SPC MD       -   0.99997309  x   1.00002848  =   1.00000157
 AC7713!UTM  18      -   0.99997309  x   0.99982346  =   0.99979656
 AC7713
 AC7713_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6527683928(NAD 83)
 AC7713
 AC7713                          SUPERSEDED SURVEY CONTROL
 AC7713
 AC7713  NAD 83(2007)-  39 35 40.22271(N)    076 34 08.47067(W) AD(2002.00) 0
 AC7713  ELLIP H (02/10/07)  171.538  (m)                       GP(2002.00)    
 AC7713  ELLIP H (08/30/02)  171.540  (m)                       GP(       ) 4 2
 AC7713  NAD 83(1991)-  39 35 40.22311(N)    076 34 08.47062(W) AD(       ) 1
 AC7713  ELLIP H (04/08/97)  171.469  (m)                       GP(       ) 3 1
 AC7713  NAVD 88 (04/08/97)  203.9    (m)  GEOID93  model used  GPS OBS        
 AC7713
 AC7713.Superseded values are not recommended for survey control.
 AC7713
 AC7713.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7713.See file dsdata.pdf to determine how the superseded data were derived.
 AC7713
 AC7713_MARKER: DD = SURVEY DISK
 AC7713_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7713_STAMPING: GIS-30 1995
 AC7713_MARK LOGO: MD-005
 AC7713_PROJECTION: FLUSH
 AC7713_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7713_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7713+STABILITY: SURFACE MOTION
 AC7713_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AC7713+SATELLITE: SATELLITE OBSERVATIONS - December 29, 2021
 AC7713
 AC7713  HISTORY     - Date     Condition        Report By
 AC7713  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7713  HISTORY     - 19970701 GOOD             MD-005
 AC7713  HISTORY     - 20030522 GOOD             DMW
 AC7713  HISTORY     - 20211229 GOOD             MD-005
 AC7713
 AC7713                          STATION DESCRIPTION
 AC7713
 AC7713'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7713'STATION IS LOCATED ABOUT 11.5 NORTH NORTHEAST OF TIMONIUM AND ABOUT
 AC7713'5.0 MI (8.0 KM) EAST OF HEREFORD AT SHEPPARD. TO REACH STATION FROM
 AC7713'THE INTERSECTION OF ROUTE 562 (TROYER ROAD) AND ROUTE 138 (SHEPPARD
 AC7713'ROAD) GO NORTHWEST ON ON RT 562 FOR 0.07 MI (0.11 KM) TO VANCE ROAD.
 AC7713'TURN RIGHT ON VANCE ROAD AND GO 150 FT (45.7 M) TO THE STATION ON THE
 AC7713'LEFT. STATION MARK IS SET IN TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7713'SET FLUSH WITH THE GROUND. IT IS 137.20 FT (41.82 M) NORTHEAST OF POLE
 AC7713'NO. 138942, 150.5 FT (45.9 M) EAST OF THE INTERSECTION OF ROUTE 562
 AC7713'AND VANCE ROAD, 15.59 FT (4.752 M) NORTHWEST OF THE CENTERLINE OF
 AC7713'VANCE ROAD AND 17.35 FT (5.29 M) SOUTHEAST OF A WOOD SPLIT RAIL FENCE.
 AC7713
 AC7713                          STATION RECOVERY (1997)
 AC7713
 AC7713'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7713'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7713'1997.
 AC7713
 AC7713                          STATION RECOVERY (2003)
 AC7713
 AC7713'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (DMM)
 AC7713'RECOVERED IN GOOD CONDITION.
 AC7713
 AC7713                          STATION RECOVERY (2021)
 AC7713
 AC7713'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2021 (JG)
 AC7713'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7714 ***********************************************************************
 AC7714  DESIGNATION -  GIS 31
 AC7714  PID         -  AC7714
 AC7714  STATE/COUNTY-  MD/BALTIMORE
 AC7714  COUNTRY     -  US
 AC7714  USGS QUAD   -  NORRISVILLE (2016)
 AC7714
 AC7714                         *CURRENT SURVEY CONTROL
 AC7714  ______________________________________________________________________
 AC7714* NAD 83(2011) POSITION- 39 38 18.50469(N) 076 34 16.17021(W)   ADJUSTED
 AC7714* NAD 83(2011) ELLIP HT-   156.258 (meters)        (06/27/12)   ADJUSTED
 AC7714* NAD 83(2011) EPOCH   -  2010.00
 AC7714* NAVD 88 ORTHO HEIGHT -   188.642 (meters)      618.90  (feet) ADJUSTED
 AC7714  ______________________________________________________________________
 AC7714  GEOID HEIGHT    -        -32.390 (meters)                     GEOID18
 AC7714  NAD 83(2011) X  -  1,142,267.988 (meters)                     COMP
 AC7714  NAD 83(2011) Y  - -4,784,055.574 (meters)                     COMP
 AC7714  NAD 83(2011) Z  -  4,047,254.494 (meters)                     COMP
 AC7714  LAPLACE CORR    -         -2.23  (seconds)                    DEFLEC18
 AC7714  DYNAMIC HEIGHT  -        188.546 (meters)      618.59  (feet) COMP
 AC7714  MODELED GRAVITY -    980,113.2   (mgal)                       NAVD 88
 AC7714
 AC7714  VERT ORDER      -  SECOND    CLASS I
 AC7714
 AC7714  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7714  Standards:
 AC7714         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7714            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7714  -------------------------------------------------------------------
 AC7714  NETWORK    0.50   0.88           0.23   0.17   0.45     -0.00224860
 AC7714  -------------------------------------------------------------------
 AC7714  Click here for local accuracies and other accuracy information.
 AC7714
 AC7714.The horizontal coordinates were established by GPS observations
 AC7714.and adjusted by the National Geodetic Survey in June 2012.
 AC7714
 AC7714.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7714.been affixed to the stable North American tectonic plate. See 
 AC7714.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7714
 AC7714.The horizontal coordinates are valid at the epoch date displayed above
 AC7714.which is a decimal equivalence of Year/Month/Day.
 AC7714
 AC7714.The orthometric height was determined by differential leveling and
 AC7714.adjusted by the NATIONAL GEODETIC SURVEY
 AC7714.in September 2021.
 AC7714
 AC7714.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7714.GEOID18 height accuracy estimate available here.
 AC7714
 AC7714.Click photographs - Photos may exist for this station.
 AC7714
 AC7714.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7714
 AC7714.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7714
 AC7714.The ellipsoidal height was determined by GPS observations
 AC7714.and is referenced to NAD 83.
 AC7714
 AC7714.The dynamic height is computed by dividing the NAVD 88
 AC7714.geopotential number by the normal gravity value computed on the
 AC7714.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7714.degrees latitude (g = 980.6199 gals.).
 AC7714
 AC7714.The modeled gravity was interpolated from observed gravity values.
 AC7714
 AC7714. The following values were computed from the NAD 83(2011) position.
 AC7714
 AC7714;                    North         East     Units Scale Factor Converg.
 AC7714;SPC MD       -   218,975.951   436,814.110   MT  1.00003841   +0 16 09.0
 AC7714;SPC MD       -   718,423.60  1,433,114.29   sFT  1.00003841   +0 16 09.0
 AC7714;UTM  18      - 4,388,811.986   365,178.618   MT  0.99982379   -1 00 08.8
 AC7714
 AC7714!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7714!SPC MD       -   0.99997549  x   1.00003841  =   1.00001390
 AC7714!UTM  18      -   0.99997549  x   0.99982379  =   0.99979928
 AC7714
 AC7714_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6517888811(NAD 83)
 AC7714
 AC7714                          SUPERSEDED SURVEY CONTROL
 AC7714
 AC7714  NAD 83(2007)-  39 38 18.50486(N)    076 34 16.17084(W) AD(2002.00) 0
 AC7714  ELLIP H (02/10/07)  156.278  (m)                       GP(2002.00)    
 AC7714  ELLIP H (08/30/02)  156.284  (m)                       GP(       ) 4 2
 AC7714  NAD 83(1991)-  39 38 18.50555(N)    076 34 16.17065(W) AD(       ) 1
 AC7714  ELLIP H (04/08/97)  156.205  (m)                       GP(       ) 3 1
 AC7714  NAVD 88 (03/31/00)  188.65   (m)  GEOID99  model used  GPS OBS        
 AC7714  NAVD 88 (04/08/97)  188.6    (m)  GEOID93  model used  GPS OBS        
 AC7714
 AC7714.Superseded values are not recommended for survey control.
 AC7714
 AC7714.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7714.See file dsdata.pdf to determine how the superseded data were derived.
 AC7714
 AC7714_MARKER: DD = SURVEY DISK
 AC7714_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7714_STAMPING: NO. GIS-31 1995
 AC7714_MARK LOGO: MD-005
 AC7714_PROJECTION: FLUSH
 AC7714_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7714_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7714+STABILITY: SURFACE MOTION
 AC7714_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7714+SATELLITE: SATELLITE OBSERVATIONS - September 11, 2024
 AC7714
 AC7714  HISTORY     - Date     Condition        Report By
 AC7714  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7714  HISTORY     - 19970630 GOOD             MD-005
 AC7714  HISTORY     - 20201123 GOOD             MDSHA
 AC7714  HISTORY     - 20240911 GOOD             MDSHA
 AC7714
 AC7714                          STATION DESCRIPTION
 AC7714
 AC7714'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7714'STATION IS LOCATED ABOUT 12.0 MI (19.3 KM) NORTHEAST OF TIMONIUM,
 AC7714'ABOUT 5.0 MILES EAST OF HEREFORD AND ABOUT 0.5 MI (0.8 KM) WEST OF THE
 AC7714'BALTIMORE-HARFORD COUNTY LINE. TO REACH STATION FROM THE INTERSECTION
 AC7714'OF ROUTE 138 (TROYER ROAD)AND ROUTE 23 (NORRISVILLE ROAD) GO NORTHWEST
 AC7714'ON ROUTE 23 FOR 0.7 MI (1.1 KM) TO WHITEHALL ROAD. TURN LEFT AND GO
 AC7714'WEST ON WHITEHALL ROAD FOR 0.9 MI (1.4 KM) TO THE STATION ON THE LEFT.
 AC7714'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7714'SET FLUSH WITH THE GROUND. IT IS 14.60 FT (4.45 M) SOUTH OF THE
 AC7714'CENTERLINE OF WHITEHALL ROAD, 99.00 FT (30.18 M) SOUTHEAST OF POWER
 AC7714'POLE NO. 55152, 48.15 FT (14.68 M) NORTHWEST OF POWER POLE NO. 55153
 AC7714'AND 3.37 FT (1.03 M) SOUTH OF THE EDGE OF PAVE.
 AC7714
 AC7714                          STATION RECOVERY (1997)
 AC7714
 AC7714'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7714'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7714'1997.
 AC7714
 AC7714                          STATION RECOVERY (2020)
 AC7714
 AC7714'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (EBD)
 AC7714'RECOVERED AS DESCRIBED.
 AC7714
 AC7714                          STATION RECOVERY (2024)
 AC7714
 AC7714'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 AC7714'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7715 ***********************************************************************
 AC7715  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7715  DESIGNATION -  GIS 32
 AC7715  PID         -  AC7715
 AC7715  STATE/COUNTY-  MD/BALTIMORE
 AC7715  COUNTRY     -  US
 AC7715  USGS QUAD   -  NEW FREEDOM (2019)
 AC7715
 AC7715                         *CURRENT SURVEY CONTROL
 AC7715  ______________________________________________________________________
 AC7715* NAD 83(2011) POSITION- 39 39 56.68189(N) 076 42 40.86333(W)   ADJUSTED
 AC7715* NAD 83(2011) ELLIP HT-   219.912 (meters)        (06/27/12)   ADJUSTED
 AC7715* NAD 83(2011) EPOCH   -  2010.00
 AC7715* NAVD 88 ORTHO HEIGHT -   252.17  (meters)      827.3   (feet) GPS OBS
 AC7715  ______________________________________________________________________
 AC7715  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AC7715  GEOID HEIGHT    -        -32.284 (meters)                     GEOID99
 AC7715  GEOID HEIGHT    -        -32.259 (meters)                     GEOID18
 AC7715  NAD 83(2011) X  -  1,130,125.980 (meters)                     COMP
 AC7715  NAD 83(2011) Y  - -4,785,003.380 (meters)                     COMP
 AC7715  NAD 83(2011) Z  -  4,049,626.457 (meters)                     COMP
 AC7715  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 AC7715
 AC7715  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7715  Standards:
 AC7715         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7715            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7715  -------------------------------------------------------------------
 AC7715  NETWORK    0.34   0.73           0.15   0.13   0.37     -0.02321138
 AC7715  -------------------------------------------------------------------
 AC7715  Click here for local accuracies and other accuracy information.
 AC7715
 AC7715.The horizontal coordinates were established by GPS observations
 AC7715.and adjusted by the National Geodetic Survey in June 2012.
 AC7715
 AC7715.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7715.been affixed to the stable North American tectonic plate. See 
 AC7715.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7715
 AC7715.The horizontal coordinates are valid at the epoch date displayed above
 AC7715.which is a decimal equivalence of Year/Month/Day.
 AC7715
 AC7715.The orthometric height was determined by GPS observations and a
 AC7715.high-resolution geoid model using precise GPS observation and
 AC7715.processing techniques.
 AC7715
 AC7715.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7715.GEOID18 height accuracy estimate available here.
 AC7715
 AC7715.Click photographs - Photos may exist for this station.
 AC7715
 AC7715.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7715
 AC7715.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7715
 AC7715.The ellipsoidal height was determined by GPS observations
 AC7715.and is referenced to NAD 83.
 AC7715
 AC7715. The following values were computed from the NAD 83(2011) position.
 AC7715
 AC7715;                    North         East     Units Scale Factor Converg.
 AC7715;SPC MD       -   221,956.660   424,769.691   MT  1.00004487   +0 10 52.2
 AC7715;SPC MD       -   728,202.81  1,393,598.56   sFT  1.00004487   +0 10 52.2
 AC7715;UTM  18      - 4,392,058.829   353,205.737   MT  0.99986530   -1 05 33.2
 AC7715
 AC7715!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7715!SPC MD       -   0.99996550  x   1.00004487  =   1.00001037
 AC7715!UTM  18      -   0.99996550  x   0.99986530  =   0.99983081
 AC7715
 AC7715_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5320592058(NAD 83)
 AC7715
 AC7715                          SUPERSEDED SURVEY CONTROL
 AC7715
 AC7715  NAD 83(2007)-  39 39 56.68209(N)    076 42 40.86404(W) AD(2002.00) 0
 AC7715  ELLIP H (02/10/07)  219.931  (m)                       GP(2002.00)    
 AC7715  ELLIP H (08/30/02)  219.935  (m)                       GP(       ) 4 2
 AC7715  NAD 83(1991)-  39 39 56.68235(N)    076 42 40.86404(W) AD(       ) 1
 AC7715  ELLIP H (04/08/97)  219.855  (m)                       GP(       ) 3 1
 AC7715  NAVD 88 (04/08/97)  252.2    (m)  GEOID93  model used  GPS OBS        
 AC7715
 AC7715.Superseded values are not recommended for survey control.
 AC7715
 AC7715.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7715.See file dsdata.pdf to determine how the superseded data were derived.
 AC7715
 AC7715_MARKER: DD = SURVEY DISK
 AC7715_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7715_STAMPING: NO. GIS-32 1995
 AC7715_MARK LOGO: MD-005
 AC7715_PROJECTION: FLUSH
 AC7715_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7715_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7715+STABILITY: SURFACE MOTION
 AC7715_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7715+SATELLITE: SATELLITE OBSERVATIONS - August 30, 2024
 AC7715
 AC7715  HISTORY     - Date     Condition        Report By
 AC7715  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7715  HISTORY     - 19970626 GOOD             MD-005
 AC7715  HISTORY     - 19990402 GOOD             GEOMET
 AC7715  HISTORY     - 20070205 GOOD             GPSSS
 AC7715  HISTORY     - 20240830 GOOD             MDSHA
 AC7715
 AC7715                          STATION DESCRIPTION
 AC7715
 AC7715'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7715'STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) NORTH-NORTHWEST OF HEREFORD
 AC7715'ON THE GROUNDS OF THE PRETTYBOY ELEMENTARY SCHOOL. TO REACH STATION
 AC7715'FROM I-83 TAKE EXIT 31 TO MIDDELTOWN ROAD. FROM THE MIDDLETOWN ROAD
 AC7715'OVERPASS OVER I-83 GO NORTHWEST ON MIDDLETOWN ROAD FOR 3.4 MI (5.5 KM)
 AC7715'TO BULLS SAWMILL ROAD. TURN LEFT ON BULLS SAWMILL RD AND GO 200 FT
 AC7715'(61.0 M) TO THE EAST ENTRANCE TO THE SCHOOL AND THE STATION ON THE
 AC7715'RIGHT IN A GRASSY AREA ON THE SOUTH SIDE OF THE ENTRANCE. STATION MARK
 AC7715'IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AC7715'THE GROUND. IT IS 194 FT (59.1 M) SOUTHEAST OF THE INTERSECTION OF
 AC7715'MIDDLETOWN AND BULLS SAWMILL RD, 94.70 FT (28.86 M) SOUTHEAST OF POWER
 AC7715'POLE NO. 492820, 17.50 FT (5.33 M) SOUTHEAST OF THE CENTERLINE OF THE
 AC7715'ENTRANCE, 22.81 FT (6.95 M) WEST OF THE CENTERLINE OF BULLS SAWMILL
 AC7715'RD, 121.02 FT (36.89 M) EAST OF THE NORTHEAST CORNER OF A CHAIN LINK
 AC7715'FENCE AROUND THE TENNIS COURTS AND 127.15 FT (38.76 M) NORTHEAST OF
 AC7715'UTILITY POLE NO. 2.
 AC7715
 AC7715                          STATION RECOVERY (1997)
 AC7715
 AC7715'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7715'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7715'1997.
 AC7715
 AC7715                          STATION RECOVERY (1999)
 AC7715
 AC7715'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BB)
 AC7715'RECOVERED AS DESCRIBED, GOOD FOR GPS.
 AC7715
 AC7715                          STATION RECOVERY (2007)
 AC7715
 AC7715'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (SS)
 AC7715'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYING
 AC7715
 AC7715                          STATION RECOVERY (2024)
 AC7715
 AC7715'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 AC7715'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7716 ***********************************************************************
 AC7716  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7716  DESIGNATION -  GIS 33
 AC7716  PID         -  AC7716
 AC7716  STATE/COUNTY-  MD/BALTIMORE
 AC7716  COUNTRY     -  US
 AC7716  USGS QUAD   -  NORRISVILLE (2016)
 AC7716
 AC7716                         *CURRENT SURVEY CONTROL
 AC7716  ______________________________________________________________________
 AC7716* NAD 83(2011) POSITION- 39 43 10.86424(N) 076 34 14.23717(W)   ADJUSTED
 AC7716* NAD 83(2011) ELLIP HT-   193.011 (meters)        (06/27/12)   ADJUSTED
 AC7716* NAD 83(2011) EPOCH   -  2010.00
 AC7716* NAVD 88 ORTHO HEIGHT -   225.45  (meters)      739.7   (feet) GPS OBS
 AC7716  ______________________________________________________________________
 AC7716  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AC7716  GEOID HEIGHT    -        -32.468 (meters)                     GEOID99
 AC7716  GEOID HEIGHT    -        -32.453 (meters)                     GEOID18
 AC7716  NAD 83(2011) X  -  1,140,982.296 (meters)                     COMP
 AC7716  NAD 83(2011) Y  - -4,778,472.580 (meters)                     COMP
 AC7716  NAD 83(2011) Z  -  4,054,217.722 (meters)                     COMP
 AC7716  LAPLACE CORR    -         -1.76  (seconds)                    DEFLEC18
 AC7716
 AC7716  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7716  Standards:
 AC7716         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7716            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7716  -------------------------------------------------------------------
 AC7716  NETWORK    0.57   0.98           0.25   0.21   0.50      0.12816492
 AC7716  -------------------------------------------------------------------
 AC7716  Click here for local accuracies and other accuracy information.
 AC7716
 AC7716.The horizontal coordinates were established by GPS observations
 AC7716.and adjusted by the National Geodetic Survey in June 2012.
 AC7716
 AC7716.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7716.been affixed to the stable North American tectonic plate. See 
 AC7716.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7716
 AC7716.The horizontal coordinates are valid at the epoch date displayed above
 AC7716.which is a decimal equivalence of Year/Month/Day.
 AC7716
 AC7716.The orthometric height was determined by GPS observations and a
 AC7716.high-resolution geoid model using precise GPS observation and
 AC7716.processing techniques.
 AC7716
 AC7716.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7716.GEOID18 height accuracy estimate available here.
 AC7716
 AC7716.Click photographs - Photos may exist for this station.
 AC7716
 AC7716.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7716
 AC7716.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7716
 AC7716.The ellipsoidal height was determined by GPS observations
 AC7716.and is referenced to NAD 83.
 AC7716
 AC7716. The following values were computed from the NAD 83(2011) position.
 AC7716
 AC7716;                    North         East     Units Scale Factor Converg.
 AC7716;SPC MD       -   227,993.234   436,817.792   MT  1.00005832   +0 16 10.2
 AC7716;SPC MD       -   748,007.80  1,433,126.37   sFT  1.00005832   +0 16 10.2
 AC7716;UTM  18      - 4,397,824.937   365,382.500   MT  0.99982311   -1 00 13.8
 AC7716
 AC7716!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7716!SPC MD       -   0.99996972  x   1.00005832  =   1.00002804
 AC7716!UTM  18      -   0.99996972  x   0.99982311  =   0.99979284
 AC7716
 AC7716_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6538297824(NAD 83)
 AC7716
 AC7716|---------------------------------------------------------------------|
 AC7716| PID    Reference Object                     Distance      Geod. Az  |
 AC7716|                                                           dddmmss.s |
 AC7716| JV6730 CORNER                              231.509 METERS 04701     |
 AC7716|---------------------------------------------------------------------|
 AC7716
 AC7716                          SUPERSEDED SURVEY CONTROL
 AC7716
 AC7716  NAD 83(2007)-  39 43 10.86440(N)    076 34 14.23786(W) AD(2002.00) 0
 AC7716  ELLIP H (02/10/07)  193.032  (m)                       GP(2002.00)    
 AC7716  ELLIP H (08/30/02)  193.036  (m)                       GP(       ) 4 2
 AC7716  NAD 83(1991)-  39 43 10.86482(N)    076 34 14.23764(W) AD(       ) 1
 AC7716  ELLIP H (04/08/97)  192.943  (m)                       GP(       ) 3 1
 AC7716  NAVD 88 (04/08/97)  225.5    (m)  GEOID93  model used  GPS OBS        
 AC7716
 AC7716.Superseded values are not recommended for survey control.
 AC7716
 AC7716.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7716.See file dsdata.pdf to determine how the superseded data were derived.
 AC7716
 AC7716_MARKER: DD = SURVEY DISK
 AC7716_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7716_STAMPING: NO. GIS-33 1995
 AC7716_MARK LOGO: MD-005
 AC7716_PROJECTION: FLUSH
 AC7716_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7716_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7716+STABILITY: SURFACE MOTION
 AC7716_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7716+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2020
 AC7716
 AC7716  HISTORY     - Date     Condition        Report By
 AC7716  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7716  HISTORY     - 19970630 GOOD             MD-005
 AC7716  HISTORY     - 20200314 GOOD             WTBALL
 AC7716
 AC7716                          STATION DESCRIPTION
 AC7716
 AC7716'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7716'STATION IS LOCATED ABOUT 10.0 MI (16.1 KM) NORTHEAST OF HEREFORD NEAR
 AC7716'THE INTERSECTION OF THE BALTIMORE-HARFORD COUNTY LINE WITH THE
 AC7716'PENNSYVANIA STATE LINE. TO REACH STATION FROM THE ROUTE 439 (OLD YORK
 AC7716'ROAD) OVERPASS OVER I-83 AT EXIT 36 GO SOUTHEAST ON ROUTE 439 FOR 1.05
 AC7716'MI (1.69 KM) TO BOND ROAD. TURN LEFT AND GO NORTHEAST ON BOND RD FOR
 AC7716'2.1 MI (3.4 KM) TO THE INTERSECTION WITH HARRIS MILL ROAD AND WEST
 AC7716'LIBERTY ROAD. CONTINUE NORTHEASTERLY ON WEST LIBERTY ROAD FOR 0.45 MI
 AC7716'(0.72 KM) TO THE INTERSECTION WITH LEIB ROAD. TURN RIGHT AND CONTINUE
 AC7716'NORTHEASTRLY ON LEIB ROAD FOR 0.85 MI (1.37 KM) TO THE STATION ON THE
 AC7716'LEFT. STATION MARK IS SET IN TOP OF 10 IN DIAMETER CONCRETE MONUMENT
 AC7716'SET FLUSH WITH THE GROUND. IT IS 200.20 FT (61.02 M) SOUTHWEST OF
 AC7716'POWER POLE NO. 465685, 13.95 FT (4.25 M) NORTHWEST OF THE CENTERLINE
 AC7716'OF LEIB ROAD, 68.15 FT (20.77 M) NORTH OF THE WESTERNMOST LEG OF A
 AC7716'WINDMILL, 192.25 FT (58.60 M) NORTHEAST OF THE SOUTHERNMOST CORNER OF
 AC7716'A WOOD SPLIT RAIL FENCE AND 144.83 FT (44.14 M) WEST OF THE
 AC7716'NORTHERNMOST CORNER OF THE FENCE.
 AC7716
 AC7716                          STATION RECOVERY (1997)
 AC7716
 AC7716'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7716'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7716'1997.
 AC7716
 AC7716                          STATION RECOVERY (2020)
 AC7716
 AC7716'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AC7716'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7717 ***********************************************************************
 AC7717  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7717  DESIGNATION -  GIS 34
 AC7717  PID         -  AC7717
 AC7717  STATE/COUNTY-  MD/BALTIMORE
 AC7717  COUNTRY     -  US
 AC7717  USGS QUAD   -  NEW FREEDOM (2019)
 AC7717
 AC7717                         *CURRENT SURVEY CONTROL
 AC7717  ______________________________________________________________________
 AC7717* NAD 83(2011) POSITION- 39 43 15.39612(N) 076 39 27.83595(W)   ADJUSTED
 AC7717* NAD 83(2011) ELLIP HT-   234.653 (meters)        (06/27/12)   ADJUSTED
 AC7717* NAD 83(2011) EPOCH   -  2010.00
 AC7717* NAVD 88 ORTHO HEIGHT -   267.02  (meters)      876.0   (feet) GPS OBS
 AC7717  ______________________________________________________________________
 AC7717  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AC7717  GEOID HEIGHT    -        -32.402 (meters)                     GEOID99
 AC7717  GEOID HEIGHT    -        -32.383 (meters)                     GEOID18
 AC7717  NAD 83(2011) X  -  1,133,702.714 (meters)                     COMP
 AC7717  NAD 83(2011) Y  - -4,780,146.026 (meters)                     COMP
 AC7717  NAD 83(2011) Z  -  4,054,351.844 (meters)                     COMP
 AC7717  LAPLACE CORR    -         -1.06  (seconds)                    DEFLEC18
 AC7717
 AC7717  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7717  Standards:
 AC7717         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7717            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7717  -------------------------------------------------------------------
 AC7717  NETWORK    0.42   0.88           0.17   0.17   0.45     -0.00772870
 AC7717  -------------------------------------------------------------------
 AC7717  Click here for local accuracies and other accuracy information.
 AC7717
 AC7717.The horizontal coordinates were established by GPS observations
 AC7717.and adjusted by the National Geodetic Survey in June 2012.
 AC7717
 AC7717.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7717.been affixed to the stable North American tectonic plate. See 
 AC7717.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7717
 AC7717.The horizontal coordinates are valid at the epoch date displayed above
 AC7717.which is a decimal equivalence of Year/Month/Day.
 AC7717
 AC7717.The orthometric height was determined by GPS observations and a
 AC7717.high-resolution geoid model using precise GPS observation and
 AC7717.processing techniques.
 AC7717
 AC7717.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7717.GEOID18 height accuracy estimate available here.
 AC7717
 AC7717.Click photographs - Photos may exist for this station.
 AC7717
 AC7717.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7717
 AC7717.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7717
 AC7717.The ellipsoidal height was determined by GPS observations
 AC7717.and is referenced to NAD 83.
 AC7717
 AC7717. The following values were computed from the NAD 83(2011) position.
 AC7717
 AC7717;                    North         East     Units Scale Factor Converg.
 AC7717;SPC MD       -   228,101.442   429,347.847   MT  1.00005864   +0 12 53.3
 AC7717;SPC MD       -   748,362.81  1,408,618.73   sFT  1.00005864   +0 12 53.3
 AC7717;UTM  18      - 4,398,099.121   357,918.470   MT  0.99984854   -1 03 34.4
 AC7717
 AC7717!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7717!SPC MD       -   0.99996319  x   1.00005864  =   1.00002183
 AC7717!UTM  18      -   0.99996319  x   0.99984854  =   0.99981173
 AC7717
 AC7717_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5791898099(NAD 83)
 AC7717
 AC7717                          SUPERSEDED SURVEY CONTROL
 AC7717
 AC7717  NAD 83(2007)-  39 43 15.39631(N)    076 39 27.83666(W) AD(2002.00) 0
 AC7717  ELLIP H (02/10/07)  234.672  (m)                       GP(2002.00)    
 AC7717  ELLIP H (08/30/02)  234.679  (m)                       GP(       ) 4 2
 AC7717  NAD 83(1991)-  39 43 15.39673(N)    076 39 27.83664(W) AD(       ) 1
 AC7717  ELLIP H (04/08/97)  234.595  (m)                       GP(       ) 3 1
 AC7717  NAVD 88 (04/08/97)  267.0    (m)  GEOID93  model used  GPS OBS        
 AC7717
 AC7717.Superseded values are not recommended for survey control.
 AC7717
 AC7717.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7717.See file dsdata.pdf to determine how the superseded data were derived.
 AC7717
 AC7717_MARKER: DD = SURVEY DISK
 AC7717_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7717_STAMPING: NO. GIS-34 1995
 AC7717_MARK LOGO: MD-005
 AC7717_PROJECTION: FLUSH
 AC7717_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7717_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7717+STABILITY: SURFACE MOTION
 AC7717_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7717+SATELLITE: SATELLITE OBSERVATIONS - March 14, 2020
 AC7717
 AC7717  HISTORY     - Date     Condition        Report By
 AC7717  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7717  HISTORY     - 19970630 GOOD             MD-005
 AC7717  HISTORY     - 19971010 GOOD             DMW
 AC7717  HISTORY     - 20060318 GOOD             GEOCAC
 AC7717  HISTORY     - 20070316 GOOD             GPSSS
 AC7717  HISTORY     - 20090316 GOOD             NGS
 AC7717  HISTORY     - 20140320 GOOD             PADT
 AC7717  HISTORY     - 20200314 GOOD             WTBALL
 AC7717
 AC7717                          STATION DESCRIPTION
 AC7717
 AC7717'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7717'STATION IS LOCATED ABOUT 9.0 MI (14.5 KM) NORTH OF HEREFORD NEAR THE
 AC7717'MARYLAND-PENNSYLVANIA LINE. TO REACH STATION FROM THE OLD YORK ROAD
 AC7717'(ROUTE 439) OVERPASS OVER I-83 AT EXIT 36 GO WEST 0.25 MI (0.40 KM) TO
 AC7717'THE INTERSECTION WITH YORK ROAD (ROUTE 45). TURN RIGHT AND GO NORTH ON
 AC7717'YORK ROAD FOR 1.15 TO THE STATION ON THE LEFT. STATION MARK IS SET IN
 AC7717'TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 AC7717'IT IS 100.42 FT (30.61 M) SOUTH AND ACROSS THE ROAD FROM A 6 FOOT HIGH
 AC7717'MASON-DIXON MONUMENT (NOT AN ORIGINAL MARKER), 22.37 FT (6.82 M) WEST
 AC7717'OF THE CENTERLINE OF YORK RD, 7.5 FT (2.3 M) EAST OF THE EDGE OF A
 AC7717'TILLED FIELD AND 67.21 FT (20.49 M) NORTHWEST OF THE CENTER OF AN
 AC7717'ELECTRIC TRANSFORMER.
 AC7717
 AC7717                          STATION RECOVERY (1997)
 AC7717
 AC7717'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7717'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7717'1997.
 AC7717
 AC7717                          STATION RECOVERY (1997)
 AC7717
 AC7717'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AC7717'RECOVERED AS DESCRIBED.
 AC7717
 AC7717                          STATION RECOVERY (2006)
 AC7717
 AC7717'RECOVERY NOTE BY GEOCACHING 2006 (EK)
 AC7717'RECOVERED IN GOOD CONDITION.
 AC7717
 AC7717                          STATION RECOVERY (2007)
 AC7717
 AC7717'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (TT)
 AC7717'RECOVERED BY TED OF SURVEY SURVICES OF MD, LLC.
 AC7717
 AC7717                          STATION RECOVERY (2009)
 AC7717
 AC7717'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2009 (DRD)
 AC7717'RECOVERED IN GOOD CONDITION.
 AC7717
 AC7717                          STATION RECOVERY (2014)
 AC7717
 AC7717'RECOVERY NOTE BY PA DEPT OF TRANSP 2014 (CIH)
 AC7717'RECOVERED IN GOOD CONDITION.
 AC7717
 AC7717                          STATION RECOVERY (2020)
 AC7717
 AC7717'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AC7717'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7718 ***********************************************************************
 AC7718  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7718  DESIGNATION -  GIS 35
 AC7718  PID         -  AC7718
 AC7718  STATE/COUNTY-  MD/BALTIMORE
 AC7718  COUNTRY     -  US
 AC7718  USGS QUAD   -  NEW FREEDOM (2019)
 AC7718
 AC7718                         *CURRENT SURVEY CONTROL
 AC7718  ______________________________________________________________________
 AC7718* NAD 83(2011) POSITION- 39 43 07.05155(N) 076 43 12.68951(W)   ADJUSTED
 AC7718* NAD 83(2011) ELLIP HT-   221.714 (meters)        (06/27/12)   ADJUSTED
 AC7718* NAD 83(2011) EPOCH   -  2010.00
 AC7718* NAVD 88 ORTHO HEIGHT -   254.07  (meters)      833.6   (feet) GPS OBS
 AC7718  ______________________________________________________________________
 AC7718  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AC7718  GEOID HEIGHT    -        -32.387 (meters)                     GEOID99
 AC7718  GEOID HEIGHT    -        -32.369 (meters)                     GEOID18
 AC7718  NAD 83(2011) X  -  1,128,526.598 (meters)                     COMP
 AC7718  NAD 83(2011) Y  - -4,781,529.441 (meters)                     COMP
 AC7718  NAD 83(2011) Z  -  4,054,145.614 (meters)                     COMP
 AC7718  LAPLACE CORR    -          0.24  (seconds)                    DEFLEC18
 AC7718
 AC7718  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7718  Standards:
 AC7718         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7718            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7718  -------------------------------------------------------------------
 AC7718  NETWORK    0.47   0.96           0.19   0.19   0.49     -0.01651268
 AC7718  -------------------------------------------------------------------
 AC7718  Click here for local accuracies and other accuracy information.
 AC7718
 AC7718.The horizontal coordinates were established by GPS observations
 AC7718.and adjusted by the National Geodetic Survey in June 2012.
 AC7718
 AC7718.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7718.been affixed to the stable North American tectonic plate. See 
 AC7718.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7718
 AC7718.The horizontal coordinates are valid at the epoch date displayed above
 AC7718.which is a decimal equivalence of Year/Month/Day.
 AC7718
 AC7718.The orthometric height was determined by GPS observations and a
 AC7718.high-resolution geoid model using precise GPS observation and
 AC7718.processing techniques.
 AC7718
 AC7718.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7718.GEOID18 height accuracy estimate available here.
 AC7718
 AC7718.Click photographs - Photos may exist for this station.
 AC7718
 AC7718.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7718
 AC7718.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7718
 AC7718.The ellipsoidal height was determined by GPS observations
 AC7718.and is referenced to NAD 83.
 AC7718
 AC7718. The following values were computed from the NAD 83(2011) position.
 AC7718
 AC7718;                    North         East     Units Scale Factor Converg.
 AC7718;SPC MD       -   227,825.822   423,993.063   MT  1.00005805   +0 10 32.2
 AC7718;SPC MD       -   747,458.55  1,391,050.57   sFT  1.00005805   +0 10 32.2
 AC7718;UTM  18      - 4,397,942.724   352,559.952   MT  0.99986764   -1 05 58.0
 AC7718
 AC7718!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7718!SPC MD       -   0.99996522  x   1.00005805  =   1.00002327
 AC7718!UTM  18      -   0.99996522  x   0.99986764  =   0.99983286
 AC7718
 AC7718_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5255997942(NAD 83)
 AC7718
 AC7718                          SUPERSEDED SURVEY CONTROL
 AC7718
 AC7718  NAD 83(2007)-  39 43 07.05175(N)    076 43 12.69025(W) AD(2002.00) 0
 AC7718  ELLIP H (02/10/07)  221.733  (m)                       GP(2002.00)    
 AC7718  ELLIP H (08/30/02)  221.736  (m)                       GP(       ) 4 2
 AC7718  NAD 83(1991)-  39 43 07.05193(N)    076 43 12.69050(W) AD(       ) 1
 AC7718  ELLIP H (04/08/97)  221.657  (m)                       GP(       ) 3 1
 AC7718  NAVD 88 (04/08/97)  254.1    (m)  GEOID93  model used  GPS OBS        
 AC7718
 AC7718.Superseded values are not recommended for survey control.
 AC7718
 AC7718.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7718.See file dsdata.pdf to determine how the superseded data were derived.
 AC7718
 AC7718_MARKER: DD = SURVEY DISK
 AC7718_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7718_STAMPING: NO. GIS-35 1995
 AC7718_MARK LOGO: MD-005
 AC7718_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7718_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7718+STABILITY: SURFACE MOTION
 AC7718_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7718+SATELLITE: SATELLITE OBSERVATIONS - February 05, 2007
 AC7718
 AC7718  HISTORY     - Date     Condition        Report By
 AC7718  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7718  HISTORY     - 19970626 GOOD             MD-005
 AC7718  HISTORY     - 20041110 GOOD             GEOCAC
 AC7718  HISTORY     - 20060524 GOOD             INDIV
 AC7718  HISTORY     - 20070205 GOOD             GPSSS
 AC7718
 AC7718                          STATION DESCRIPTION
 AC7718
 AC7718'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7718'STATION IS LOCATED ABOUT 9.0 MI (14.5 KM) NORTH-NORTHWEST OF HEREFORD
 AC7718'NEAR THE MARYLAND-PENNSYLVANIA LINE. TO REACH STATION FROM THE
 AC7718'FREELAND ROAD OVERPASS OVER I-83 AT EXIT 37 GO SOUTHEAST ON FREELAND
 AC7718'ROAD FOR 2.55 MI (4.10 KM) TO THE INTERSECTION WITH RIDGE ROAD. TURN
 AC7718'RIGHT AND NORTHWEST ON RIDGE ROAD AND OAKLAND ROAD FOR 2.0 MI (3.2 KM)
 AC7718'TO THE INTERSECTION WITH KEENEY MILL ROAD. TURN RIGHT AND GO NORTH ON
 AC7718'KEENEY MILL ROAD FOR 0.3 MI (0.5 KM) TO THE STATION ON THE RIGHT AT
 AC7718'THE TOP OF A HILL. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AC7718'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 13.09 FT (3.99 M)
 AC7718'EAST OF THE CENTERLINE OF KEENEY MILL RD, 151.05 FT (46.04 M) SOUTH OF
 AC7718'POWER POLE NO. 108785, 110.03 FT (33.54 M) NORTH OF POWER POLE NO.
 AC7718'108784.
 AC7718
 AC7718                          STATION RECOVERY (1997)
 AC7718
 AC7718'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7718'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7718'1997.
 AC7718
 AC7718                          STATION RECOVERY (2004)
 AC7718
 AC7718'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 AC7718'RECOVERED IN GOOD CONDITION.
 AC7718
 AC7718                          STATION RECOVERY (2006)
 AC7718
 AC7718'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2006 (JFP)
 AC7718'RECOVERED IN GOOD CONDITION.
 AC7718
 AC7718                          STATION RECOVERY (2007)
 AC7718
 AC7718'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (SS)
 AC7718'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYING
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7719 ***********************************************************************
 AC7719  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7719  CBN         -  This is a Cooperative Base Network Control Station.
 AC7719  DESIGNATION -  GIS 36
 AC7719  PID         -  AC7719
 AC7719  STATE/COUNTY-  MD/BALTIMORE
 AC7719  COUNTRY     -  US
 AC7719  USGS QUAD   -  LINEBORO (2016)
 AC7719
 AC7719                         *CURRENT SURVEY CONTROL
 AC7719  ______________________________________________________________________
 AC7719* NAD 83(2011) POSITION- 39 43 10.11333(N) 076 47 10.75552(W)   ADJUSTED
 AC7719* NAD 83(2011) ELLIP HT-   197.919 (meters)        (06/27/12)   ADJUSTED
 AC7719* NAD 83(2011) EPOCH   -  2010.00
 AC7719* NAVD 88 ORTHO HEIGHT -   230.32  (meters)      755.6   (feet) GPS OBS
 AC7719  ______________________________________________________________________
 AC7719  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AC7719  GEOID HEIGHT    -        -32.415 (meters)                     GEOID99
 AC7719  GEOID HEIGHT    -        -32.404 (meters)                     GEOID18
 AC7719  NAD 83(2011) X  -  1,122,989.141 (meters)                     COMP
 AC7719  NAD 83(2011) Y  - -4,782,752.210 (meters)                     COMP
 AC7719  NAD 83(2011) Z  -  4,054,203.045 (meters)                     COMP
 AC7719  LAPLACE CORR    -          1.95  (seconds)                    DEFLEC18
 AC7719
 AC7719  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7719  Standards:
 AC7719         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7719            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7719  -------------------------------------------------------------------
 AC7719  NETWORK    0.42   0.90           0.17   0.17   0.46     -0.05328071
 AC7719  -------------------------------------------------------------------
 AC7719  Click here for local accuracies and other accuracy information.
 AC7719
 AC7719.The horizontal coordinates were established by GPS observations
 AC7719.and adjusted by the National Geodetic Survey in June 2012.
 AC7719
 AC7719.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7719.been affixed to the stable North American tectonic plate. See 
 AC7719.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7719
 AC7719.The horizontal coordinates are valid at the epoch date displayed above
 AC7719.which is a decimal equivalence of Year/Month/Day.
 AC7719
 AC7719.The orthometric height was determined by GPS observations and a
 AC7719.high-resolution geoid model using precise GPS observation and
 AC7719.processing techniques.
 AC7719
 AC7719.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7719.GEOID18 height accuracy estimate available here.
 AC7719
 AC7719.Click photographs - Photos may exist for this station.
 AC7719
 AC7719.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7719
 AC7719.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7719
 AC7719.The ellipsoidal height was determined by GPS observations
 AC7719.and is referenced to NAD 83.
 AC7719
 AC7719. The following values were computed from the NAD 83(2011) position.
 AC7719
 AC7719;                    North         East     Units Scale Factor Converg.
 AC7719;SPC MD       -   227,904.930   418,322.375   MT  1.00005826   +0 08 02.8
 AC7719;SPC MD       -   747,718.09  1,372,445.99   sFT  1.00005826   +0 08 02.8
 AC7719;UTM  18      - 4,398,147.999   346,893.451   MT  0.99988860   -1 08 30.2
 AC7719
 AC7719!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7719!SPC MD       -   0.99996895  x   1.00005826  =   1.00002721
 AC7719!UTM  18      -   0.99996895  x   0.99988860  =   0.99985755
 AC7719
 AC7719_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4689398147(NAD 83)
 AC7719
 AC7719                          SUPERSEDED SURVEY CONTROL
 AC7719
 AC7719  NAD 83(2007)-  39 43 10.11353(N)    076 47 10.75628(W) AD(2002.00) 0
 AC7719  ELLIP H (02/10/07)  197.940  (m)                       GP(2002.00)    
 AC7719  NAD 83(1991)-  39 43 10.11372(N)    076 47 10.75645(W) AD(       ) A
 AC7719  ELLIP H (02/12/02)  197.932  (m)                       GP(       ) 4 1
 AC7719  NAD 83(1991)-  39 43 10.11359(N)    076 47 10.75641(W) AD(       ) 1
 AC7719  ELLIP H (04/08/97)  197.848  (m)                       GP(       ) 3 1
 AC7719  NAVD 88 (04/08/97)  230.3    (m)  GEOID93  model used  GPS OBS        
 AC7719
 AC7719.Superseded values are not recommended for survey control.
 AC7719
 AC7719.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7719.See file dsdata.pdf to determine how the superseded data were derived.
 AC7719
 AC7719_MARKER: DD = SURVEY DISK
 AC7719_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7719_STAMPING: NO. GIS-36 1995
 AC7719_MARK LOGO: MD-005
 AC7719_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AC7719_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7719+STABILITY: SURFACE MOTION
 AC7719_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7719+SATELLITE: SATELLITE OBSERVATIONS - February 23, 2004
 AC7719
 AC7719  HISTORY     - Date     Condition        Report By
 AC7719  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7719  HISTORY     - 19970626 GOOD             MD-005
 AC7719  HISTORY     - 20000327 GOOD             MDSHA
 AC7719  HISTORY     - 20040223 GOOD             MD-005
 AC7719
 AC7719                          STATION DESCRIPTION
 AC7719
 AC7719'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7719'STATION IS LOCATED ABOUT 10.5 MI (16.9 KM) NORTHWEST OF HEREFORD NEAR
 AC7719'THE INTERSECTION OF THE BALTIMORE-HARFORD COUNTY LINE WITH THE
 AC7719'MARYLAND-PENNSYLVANIA STATE LINE. TO REACH STATION FROM MIDDLETOWN
 AC7719'ROAD OVERPASS OVER I-83 AT EXIT 31 GO NORTHWEST ON MIDDLETOWN ROAD FOR
 AC7719'7.8 MI (12.6 KM) TO THE INTERSECTION WITH BAKER SCHOOLHOUSE ROAD. TURN
 AC7719'LEFT AND GO SOUTHWEST ON BAKERS SCHOOLHOUSE ROAD FOR 1.45 MI (2.33 KM)
 AC7719'TO GUNPOWDER ROAD. TURN RIGHT ON GUNPOWDER ROAD AND GO 0.05 MI (0.08
 AC7719'KM) TO THE INTERSECTION WITH WITH ST. PAULS ROAD. TURN LEFT AND GO
 AC7719'NORTHWEST ON ST.PAULS ROAD FOR 0.70 MI (1.13 KM) TO THE INTERSECTION
 AC7719'WITH SHAFFER MILL ROAD. TURN RIGHT AND GO NORTHEAST ON SHAFFER MILL
 AC7719'ROAD FOR 0.45 MI (0.72 KM) TO THE STATION ON THE RIGHT ON THE TOP OF A
 AC7719'BANK ABOUT 6.0 FT (1.83 M) ABOVE THE SURFACE OF THE ROAD. STATION MARK
 AC7719'IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AC7719'THE GROUND. IT IS 21.47 FT (6.54 M) SOUTH OF A ROAD SIGN (SLOW IN BARN
 AC7719'AREA), 137.40 FT (41.88 M) SOUTHWEST OF POWER POLE NO. 145085, 17.81
 AC7719'FT (5.43 M) EAST OF THE CENTERLINE OF SHAFFER MILL RD AND 70.15 FT
 AC7719'(21.38 M) NORTHEAST OF AN 0.75 FT (0.23 M) CEDAR TREE ON THE WEST SIDE
 AC7719'OF THE ROAD.
 AC7719
 AC7719                          STATION RECOVERY (1997)
 AC7719
 AC7719'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7719'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7719'1997.
 AC7719
 AC7719                          STATION RECOVERY (2000)
 AC7719
 AC7719'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AC7719'RECOVERED AS DESCRIBED.
 AC7719
 AC7719                          STATION RECOVERY (2004)
 AC7719
 AC7719'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2004 (GIB)
 AC7719'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7720 ***********************************************************************
 AC7720  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7720  DESIGNATION -  GIS 37
 AC7720  PID         -  AC7720
 AC7720  STATE/COUNTY-  MD/BALTIMORE
 AC7720  COUNTRY     -  US
 AC7720  USGS QUAD   -  LINEBORO (2016)
 AC7720
 AC7720                         *CURRENT SURVEY CONTROL
 AC7720  ______________________________________________________________________
 AC7720* NAD 83(2011) POSITION- 39 38 41.40503(N) 076 48 42.71764(W)   ADJUSTED
 AC7720* NAD 83(2011) ELLIP HT-   210.850 (meters)        (06/27/12)   ADJUSTED
 AC7720* NAD 83(2011) EPOCH   -  2010.00
 AC7720* NAVD 88 ORTHO HEIGHT -   243.07  (meters)      797.5   (feet) GPS OBS
 AC7720  ______________________________________________________________________
 AC7720  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AC7720  GEOID HEIGHT    -        -32.244 (meters)                     GEOID99
 AC7720  GEOID HEIGHT    -        -32.225 (meters)                     GEOID18
 AC7720  NAD 83(2011) X  -  1,122,066.264 (meters)                     COMP
 AC7720  NAD 83(2011) Y  - -4,788,414.382 (meters)                     COMP
 AC7720  NAD 83(2011) Z  -  4,047,833.202 (meters)                     COMP
 AC7720  LAPLACE CORR    -          0.30  (seconds)                    DEFLEC18
 AC7720
 AC7720  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7720  Standards:
 AC7720         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7720            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7720  -------------------------------------------------------------------
 AC7720  NETWORK    0.52   1.12           0.22   0.20   0.57      0.29701495
 AC7720  -------------------------------------------------------------------
 AC7720  Click here for local accuracies and other accuracy information.
 AC7720
 AC7720.The horizontal coordinates were established by GPS observations
 AC7720.and adjusted by the National Geodetic Survey in June 2012.
 AC7720
 AC7720.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7720.been affixed to the stable North American tectonic plate. See 
 AC7720.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7720
 AC7720.The horizontal coordinates are valid at the epoch date displayed above
 AC7720.which is a decimal equivalence of Year/Month/Day.
 AC7720
 AC7720.The orthometric height was determined by GPS observations and a
 AC7720.high-resolution geoid model using precise GPS observation and
 AC7720.processing techniques.
 AC7720
 AC7720.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7720.GEOID18 height accuracy estimate available here.
 AC7720
 AC7720.Click photographs - Photos may exist for this station.
 AC7720
 AC7720.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7720
 AC7720.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7720
 AC7720.The ellipsoidal height was determined by GPS observations
 AC7720.and is referenced to NAD 83.
 AC7720
 AC7720. The following values were computed from the NAD 83(2011) position.
 AC7720
 AC7720;                    North         East     Units Scale Factor Converg.
 AC7720;SPC MD       -   219,612.419   416,149.043   MT  1.00003990   +0 07 05.1
 AC7720;SPC MD       -   720,511.74  1,365,315.65   sFT  1.00003990   +0 07 05.1
 AC7720;UTM  18      - 4,389,907.188   344,536.494   MT  0.99989756   -1 09 22.5
 AC7720
 AC7720!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7720!SPC MD       -   0.99996692  x   1.00003990  =   1.00000682
 AC7720!UTM  18      -   0.99996692  x   0.99989756  =   0.99986449
 AC7720
 AC7720_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4453689907(NAD 83)
 AC7720
 AC7720                          SUPERSEDED SURVEY CONTROL
 AC7720
 AC7720  NAD 83(2007)-  39 38 41.40522(N)    076 48 42.71838(W) AD(2002.00) 0
 AC7720  ELLIP H (02/10/07)  210.871  (m)                       GP(2002.00)    
 AC7720  ELLIP H (08/30/02)  210.872  (m)                       GP(       ) 4 2
 AC7720  NAD 83(1991)-  39 38 41.40546(N)    076 48 42.71847(W) AD(       ) 1
 AC7720  ELLIP H (04/08/97)  210.798  (m)                       GP(       ) 3 1
 AC7720  NAVD 88 (04/08/97)  243.1    (m)  GEOID93  model used  GPS OBS        
 AC7720
 AC7720.Superseded values are not recommended for survey control.
 AC7720
 AC7720.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7720.See file dsdata.pdf to determine how the superseded data were derived.
 AC7720
 AC7720_MARKER: DD = SURVEY DISK
 AC7720_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7720_STAMPING: NO. GIS-37 1995
 AC7720_MARK LOGO: MD-005
 AC7720_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7720_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7720+STABILITY: SURFACE MOTION
 AC7720_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7720+SATELLITE: SATELLITE OBSERVATIONS - June 25, 1997
 AC7720
 AC7720  HISTORY     - Date     Condition        Report By
 AC7720  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7720  HISTORY     - 19970625 GOOD             MD-005
 AC7720
 AC7720                          STATION DESCRIPTION
 AC7720
 AC7720'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7720'STATION IS LOCATED ABOUT 8.5 MI (13.7 KM) NORTHWEST OF HEREFORD AND
 AC7720'ABOUT 3.0 MI (4.8 KM) NORTHWEST OF HAMPSTEAD. TO REACH STATION FROM
 AC7720'THE ROUTE 137 (MOUNT CARMEL ROAD) OVERPASS OVER I-83 AT EXITH 27 GO
 AC7720'WEST ON ROUTE 137 FOR 6.0 MI (9.7 KM) TO THE INTERSECTION WITH ROUTE
 AC7720'25 (FALLS ROAD). TURN RIGHT AND GO NORTH ON ROUTE 25 FOR 2.2 MI (3.5
 AC7720'KM) TO THE INTERSECTION WITH BRICK STORE ROAD. TURN LEFT AND GO
 AC7720'NORTHWEST ON BRICK STORE ROAD FOR 1.55 MI (2.49 KM) TO THE
 AC7720'INTERSECTION WITH MAPLE GROVE ROAD AND THE STATION ON THE LEFT.
 AC7720'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7720'SET FLUSH WITH THE GROUND. IT IS 41.30 FT (12.59 M) SOUTH OF THE
 AC7720'INTERSECTION OF BRICK STORE ROAD AND MAPLE GROVE ROAD, 38.78 FT (11.82
 AC7720'M) SOUTHWEST OF THE CENTERLINE BRICK STORE ROAD, 25.34 FT (7.72 M)
 AC7720'SOUTHEAST OF THE CENTERLINE OF MAPLE GROVE ROAD, 31.00 FT (9.45 M)
 AC7720'NORTHEAST OF POWER POLE NO. 45602 AND 15.00 FT (4.57 M) WEST OF A STOP
 AC7720'SIGN ON THE SOUTH SIDE OF BRICK STORE ROAD.
 AC7720
 AC7720                          STATION RECOVERY (1997)
 AC7720
 AC7720'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7720'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7720'1997.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7721 ***********************************************************************
 AC7721  HT_MOD      -  This is a Height Modernization Survey Station.
 AC7721  DESIGNATION -  GIS 38
 AC7721  PID         -  AC7721
 AC7721  STATE/COUNTY-  MD/BALTIMORE
 AC7721  COUNTRY     -  US
 AC7721  USGS QUAD   -  HAMPSTEAD (2016)
 AC7721
 AC7721                         *CURRENT SURVEY CONTROL
 AC7721  ______________________________________________________________________
 AC7721* NAD 83(2011) POSITION- 39 34 25.63562(N) 076 50 25.37271(W)   ADJUSTED
 AC7721* NAD 83(2011) ELLIP HT-   214.878 (meters)        (06/27/12)   ADJUSTED
 AC7721* NAD 83(2011) EPOCH   -  2010.00
 AC7721* NAVD 88 ORTHO HEIGHT -   247.00  (meters)      810.4   (feet) GPS OBS
 AC7721  ______________________________________________________________________
 AC7721  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AC7721  GEOID HEIGHT    -        -32.138 (meters)                     GEOID99
 AC7721  GEOID HEIGHT    -        -32.120 (meters)                     GEOID18
 AC7721  NAD 83(2011) X  -  1,120,828.689 (meters)                     COMP
 AC7721  NAD 83(2011) Y  - -4,793,872.430 (meters)                     COMP
 AC7721  NAD 83(2011) Z  -  4,041,758.459 (meters)                     COMP
 AC7721  LAPLACE CORR    -         -0.16  (seconds)                    DEFLEC18
 AC7721
 AC7721  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7721  Standards:
 AC7721         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7721            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7721  -------------------------------------------------------------------
 AC7721  NETWORK    0.50   1.02           0.21   0.19   0.52      0.29021175
 AC7721  -------------------------------------------------------------------
 AC7721  Click here for local accuracies and other accuracy information.
 AC7721
 AC7721.The horizontal coordinates were established by GPS observations
 AC7721.and adjusted by the National Geodetic Survey in June 2012.
 AC7721
 AC7721.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7721.been affixed to the stable North American tectonic plate. See 
 AC7721.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7721
 AC7721.The horizontal coordinates are valid at the epoch date displayed above
 AC7721.which is a decimal equivalence of Year/Month/Day.
 AC7721
 AC7721.The orthometric height was determined by GPS observations and a
 AC7721.high-resolution geoid model using precise GPS observation and
 AC7721.processing techniques.
 AC7721
 AC7721.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7721.GEOID18 height accuracy estimate available here.
 AC7721
 AC7721.Click photographs - Photos may exist for this station.
 AC7721
 AC7721.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7721
 AC7721.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7721
 AC7721.The ellipsoidal height was determined by GPS observations
 AC7721.and is referenced to NAD 83.
 AC7721
 AC7721. The following values were computed from the NAD 83(2011) position.
 AC7721
 AC7721;                    North         East     Units Scale Factor Converg.
 AC7721;SPC MD       -   211,719.367   413,715.143   MT  1.00002400   +0 06 00.7
 AC7721;SPC MD       -   694,615.96  1,357,330.43   sFT  1.00002400   +0 06 00.7
 AC7721;UTM  18      - 4,382,071.197   341,928.095   MT  0.99990764   -1 10 21.7
 AC7721
 AC7721!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7721!SPC MD       -   0.99996629  x   1.00002400  =   0.99999029
 AC7721!UTM  18      -   0.99996629  x   0.99990764  =   0.99987393
 AC7721
 AC7721_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4192882071(NAD 83)
 AC7721
 AC7721                          SUPERSEDED SURVEY CONTROL
 AC7721
 AC7721  NAD 83(2007)-  39 34 25.63581(N)    076 50 25.37343(W) AD(2002.00) 0
 AC7721  ELLIP H (02/10/07)  214.897  (m)                       GP(2002.00)    
 AC7721  ELLIP H (08/30/02)  214.911  (m)                       GP(       ) 4 2
 AC7721  NAD 83(1991)-  39 34 25.63657(N)    076 50 25.37369(W) AD(       ) 1
 AC7721  ELLIP H (04/08/97)  214.859  (m)                       GP(       ) 3 1
 AC7721  NAVD 88 (04/08/97)  247.0    (m)  GEOID93  model used  GPS OBS        
 AC7721
 AC7721.Superseded values are not recommended for survey control.
 AC7721
 AC7721.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7721.See file dsdata.pdf to determine how the superseded data were derived.
 AC7721
 AC7721_MARKER: DD = SURVEY DISK
 AC7721_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7721_STAMPING: GIS-38 1995
 AC7721_MARK LOGO: MD-005
 AC7721_PROJECTION: FLUSH
 AC7721_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7721_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7721+STABILITY: SURFACE MOTION
 AC7721_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7721+SATELLITE: SATELLITE OBSERVATIONS - January 17, 2021
 AC7721
 AC7721  HISTORY     - Date     Condition        Report By
 AC7721  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7721  HISTORY     - 19970625 GOOD             MD-005
 AC7721  HISTORY     - 19990312 GOOD             MD-005
 AC7721  HISTORY     - 20040130 GOOD             MD-005
 AC7721  HISTORY     - 20060714 GOOD             GPSSS
 AC7721  HISTORY     - 20101020 GOOD             JCLS
 AC7721  HISTORY     - 20121130 GOOD             GPSSS
 AC7721  HISTORY     - 20140531 GOOD             RODCON
 AC7721  HISTORY     - 20200307 GOOD             WTBALL
 AC7721  HISTORY     - 20210117 GOOD             WTBALL
 AC7721
 AC7721                          STATION DESCRIPTION
 AC7721
 AC7721'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7721'STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) SOUTHEAST OF HAMPSTEAD AND
 AC7721'ABOUT 9.5 MI (15.29 KM) WEST OF HEREFORD NEAR THE CARROLL-BALTIMORE
 AC7721'COUNTY LINE. TO REACH STATION FROM THE INTERSECTION OF ROUTE 30
 AC7721'(HANOVER PIKE) AND ROUTE 482 (MEXICO ROAD) IN HAMPSTEAD GO SOUTH ON
 AC7721'ROUTE 30 FOR 2.8 MI (4.5 KM) TO THE STATION ON THE LEFT AT THE TOP OF
 AC7721'THE BANK ABOUT 3.0 FT (0.9 M) ABOVE THE ROAD SURFACE. STATION MARK IS
 AC7721'SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AC7721'THE GROUND. IT IS 24.30 FT (7.41 M) SOUTH OF TELEPHONE POLE NO. 317,
 AC7721'32.02 FT (9.76 M) EAST OF THE CENTERLINE OF ROUTE 30, 103.15 FT (31.44
 AC7721'M) NORTH OF TELEPHONE POLE NO. 316, AND 119.32 FT (36.37 M) NORTH OF
 AC7721'THE CENTERLINE OF A PAVED DRIVE LEADING TO HOUSE NO. 16305.
 AC7721
 AC7721                          STATION RECOVERY (1997)
 AC7721
 AC7721'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AC7721'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AC7721'1997.
 AC7721
 AC7721                          STATION RECOVERY (1999)
 AC7721
 AC7721'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1999 (FJJ)
 AC7721'RECOVERED AS DESCRIBED, GOOD FOR GPS.
 AC7721
 AC7721                          STATION RECOVERY (2004)
 AC7721
 AC7721'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2004 (GIB)
 AC7721'RECOVERED IN GOOD CONDITION.
 AC7721
 AC7721                          STATION RECOVERY (2006)
 AC7721
 AC7721'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (SS)
 AC7721'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYING
 AC7721
 AC7721                          STATION RECOVERY (2010)
 AC7721
 AC7721'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2010
 AC7721'RECOVERED IN GOOD CONDITION.
 AC7721
 AC7721                          STATION RECOVERY (2012)
 AC7721
 AC7721'RECOVERY NOTE BY GPS SALES AND SERVICES 2012 (SS)
 AC7721'RECOVERED BY STEVE SNYDER OF A.L. SNYDER SURVEYING.
 AC7721
 AC7721                          STATION RECOVERY (2014)
 AC7721
 AC7721'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AC7721'RECOVERED IN GOOD CONDITION.
 AC7721
 AC7721                          STATION RECOVERY (2020)
 AC7721
 AC7721'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AC7721'RECOVERED IN GOOD CONDITION.
 AC7721
 AC7721                          STATION RECOVERY (2021)
 AC7721
 AC7721'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2021 (JMB)
 AC7721'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7687 ***********************************************************************
 AC7687  DESIGNATION -  GIS 4
 AC7687  PID         -  AC7687
 AC7687  STATE/COUNTY-  MD/BALTIMORE
 AC7687  COUNTRY     -  US
 AC7687  USGS QUAD   -  SPARROWS POINT (2016)
 AC7687
 AC7687                         *CURRENT SURVEY CONTROL
 AC7687  ______________________________________________________________________
 AC7687* NAD 83(2011) POSITION- 39 14 30.81637(N) 076 26 51.44636(W)   ADJUSTED
 AC7687* NAD 83(2011) ELLIP HT-   -26.295 (meters)        (06/27/12)   ADJUSTED
 AC7687* NAD 83(2011) EPOCH   -  2010.00
 AC7687* NAVD 88 ORTHO HEIGHT -     6.709 (meters)       22.01  (feet) ADJUSTED
 AC7687  ______________________________________________________________________
 AC7687  GEOID HEIGHT    -        -33.019 (meters)                     GEOID18
 AC7687  NAD 83(2011) X  -  1,159,101.709 (meters)                     COMP
 AC7687  NAD 83(2011) Y  - -4,808,636.935 (meters)                     COMP
 AC7687  NAD 83(2011) Z  -  4,013,134.498 (meters)                     COMP
 AC7687  LAPLACE CORR    -         -0.76  (seconds)                    DEFLEC18
 AC7687  DYNAMIC HEIGHT  -          6.706 (meters)       22.00  (feet) COMP
 AC7687  MODELED GRAVITY -    980,110.4   (mgal)                       NAVD 88
 AC7687
 AC7687  VERT ORDER      -  THIRD
 AC7687
 AC7687  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7687  Standards:
 AC7687         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7687            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7687  -------------------------------------------------------------------
 AC7687  NETWORK    0.64   1.10           0.28   0.24   0.56      0.06648763
 AC7687  -------------------------------------------------------------------
 AC7687  Click here for local accuracies and other accuracy information.
 AC7687
 AC7687.The horizontal coordinates were established by GPS observations
 AC7687.and adjusted by the National Geodetic Survey in June 2012.
 AC7687
 AC7687.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7687.been affixed to the stable North American tectonic plate. See 
 AC7687.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7687
 AC7687.The horizontal coordinates are valid at the epoch date displayed above
 AC7687.which is a decimal equivalence of Year/Month/Day.
 AC7687
 AC7687.The orthometric height was determined by differential leveling and
 AC7687.adjusted by the NATIONAL GEODETIC SURVEY
 AC7687.in February 1998.
 AC7687
 AC7687.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7687.GEOID18 height accuracy estimate available here.
 AC7687
 AC7687.Click photographs - Photos may exist for this station.
 AC7687
 AC7687.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7687
 AC7687.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7687
 AC7687.The ellipsoidal height was determined by GPS observations
 AC7687.and is referenced to NAD 83.
 AC7687
 AC7687.The dynamic height is computed by dividing the NAVD 88
 AC7687.geopotential number by the normal gravity value computed on the
 AC7687.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7687.degrees latitude (g = 980.6199 gals.).
 AC7687
 AC7687.The modeled gravity was interpolated from observed gravity values.
 AC7687
 AC7687. The following values were computed from the NAD 83(2011) position.
 AC7687
 AC7687;                    North         East     Units Scale Factor Converg.
 AC7687;SPC MD       -   175,003.871   447,685.282   MT  0.99997021   +0 20 48.1
 AC7687;SPC MD       -   574,158.53  1,468,780.80   sFT  0.99997021   +0 20 48.1
 AC7687;UTM  18      - 4,344,618.791   375,072.950   MT  0.99979216   -0 54 57.2
 AC7687
 AC7687!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7687!SPC MD       -   1.00000413  x   0.99997021  =   0.99997434
 AC7687!UTM  18      -   1.00000413  x   0.99979216  =   0.99979628
 AC7687
 AC7687_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7507244618(NAD 83)
 AC7687
 AC7687                          SUPERSEDED SURVEY CONTROL
 AC7687
 AC7687  NAD 83(2007)-  39 14 30.81664(N)    076 26 51.44715(W) AD(2002.00) 0
 AC7687  ELLIP H (02/10/07)  -26.278  (m)                       GP(2002.00)    
 AC7687  ELLIP H (08/30/02)  -26.263  (m)                       GP(       ) 4 2
 AC7687  NAD 83(1991)-  39 14 30.81650(N)    076 26 51.44657(W) AD(       ) 1
 AC7687  ELLIP H (04/08/97)  -26.352  (m)                       GP(       ) 3 1
 AC7687  NAVD 88 (04/08/97)    6.7    (m)  GEOID93  model used  GPS OBS        
 AC7687
 AC7687.Superseded values are not recommended for survey control.
 AC7687
 AC7687.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7687.See file dsdata.pdf to determine how the superseded data were derived.
 AC7687
 AC7687_MARKER: DD = SURVEY DISK
 AC7687_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7687_STAMPING: NO. GIS-4 1995
 AC7687_MARK LOGO: MD-005
 AC7687_PROJECTION: PROJECTING 7 CENTIMETERS
 AC7687_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7687_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7687+STABILITY: SURFACE MOTION
 AC7687_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7687+SATELLITE: SATELLITE OBSERVATIONS - May 01, 2025
 AC7687
 AC7687  HISTORY     - Date     Condition        Report By
 AC7687  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7687  HISTORY     - 20000114 GOOD             GEOMET
 AC7687  HISTORY     - 20040406 GOOD             URS
 AC7687  HISTORY     - 20051220 GOOD             GEOCAC
 AC7687  HISTORY     - 20060707 GOOD             GPSSS
 AC7687  HISTORY     - 20080111 GOOD             GPSSS
 AC7687  HISTORY     - 20090708 GOOD             MD-005
 AC7687  HISTORY     - 20101117 GOOD             JMTMD
 AC7687  HISTORY     - 20120601 GOOD             JMTMD
 AC7687  HISTORY     - 20200604 GOOD             MD-005
 AC7687  HISTORY     - 20250501 GOOD             WHIREQ
 AC7687
 AC7687                          STATION DESCRIPTION
 AC7687
 AC7687'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7687'STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) SOUTHEAST OF THE CENTER OF
 AC7687'BALTIMORE AT EDGEMERE. TO REACH THE STATION FROM I-695 (BELTWAY) TAKE
 AC7687'EXIT 42 TO NORTH POINT ROAD (RT 20) AND FOLLOW EXIT RAMP TO STOP SIGN
 AC7687'(TOWARD FORT HOWARD). TURN RIGHT AND GO SOUTH ON NORTH POINT ROAD FOR
 AC7687'0.3 MI (0.5 KM) TO THE INTERSECTION WITH LYNCH ROAD. TURN LEFT ON
 AC7687'LYNCH RD AND GO 130 FT (39.6 M) TO STATION ON RIGHT. STATION MARK IS
 AC7687'SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AC7687'THE GROUND. IT IS 81.83 FT (24.94 M) SOUTHWEST OF POWER POLE NO.
 AC7687'194131, 20.88 FT (6.36 M) SOUTHEAST OF THE CENTERLINE OF LYNCH ROAD,
 AC7687'108.83 FT (33.17 M) NORTHEAST OF POWER POLE NO. 270763 AND 130 FT
 AC7687'(39.6 M) NORTHEAST OF THE CENTERLINE OF NORTH POINT RD.
 AC7687
 AC7687                          STATION RECOVERY (2000)
 AC7687
 AC7687'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (BAB)
 AC7687'GOOD CONDITION.
 AC7687
 AC7687                          STATION RECOVERY (2004)
 AC7687
 AC7687'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 AC7687'RECOVERED IN GOOD CONDITION.
 AC7687
 AC7687                          STATION RECOVERY (2005)
 AC7687
 AC7687'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 AC7687'RECOVERED IN GOOD CONDITION.
 AC7687
 AC7687                          STATION RECOVERY (2006)
 AC7687
 AC7687'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (CE)
 AC7687'RECOVERED BY CHRIS OF PARADYGM.  THE BAR NEXT-DOOR IS GRADING THE
 AC7687'PARKING LOT AND IT LOOKS AS IF THIS CONTROL POINT HAS AN UNCERTAIN
 AC7687'FUTURE.
 AC7687
 AC7687                          STATION RECOVERY (2008)
 AC7687
 AC7687'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (TT)
 AC7687'RECOVERED BY TED AND DEVIN OF SURVEY SERVICES OF MD, LLC.  LYNCH ROAD
 AC7687'IS UNDER CONSTRUCTION AND BEING WIDENED.  THE MARK IS IN DANGER OF
 AC7687'BEING DISTROYED.
 AC7687
 AC7687                          STATION RECOVERY (2009)
 AC7687
 AC7687'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AC7687'RECOVERED IN GOOD CONDITION.
 AC7687
 AC7687                          STATION RECOVERY (2010)
 AC7687
 AC7687'RECOVERY NOTE BY JMT ENGINEERING 2010 (EAS)
 AC7687'GOOD FOR GPS. CHECK WITH NETWORK N+0.00 E+0.10 Z-0.05
 AC7687
 AC7687                          STATION RECOVERY (2012)
 AC7687
 AC7687'RECOVERY NOTE BY JMT ENGINEERING 2012 (EAS)
 AC7687'USED AS RTK CHECK N-0.1 E +0.05 Z -0.1
 AC7687
 AC7687                          STATION RECOVERY (2020)
 AC7687
 AC7687'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (RAM)
 AC7687'RECOVERED IN GOOD CONDITION.
 AC7687
 AC7687                          STATION RECOVERY (2025)
 AC7687
 AC7687'RECOVERY NOTE BY WHITMAN REQUARDT AND ASSOCIATES 2025 (AH)
 AC7687'RECOVERED AS DESCRIBED.  THE MARK IS ALSO 2.5 FT (0.8 M) SOUTHEAST OF
 AC7687'A CONCRETE SIDEWALK IN THE PARKING LOT OF CLANCY'S PUBLIC.  IT IS
 AC7687'SUBJECT TO BEING DRIVEN OVER BY VEHICLES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6399 ***********************************************************************
 DG6399  DESIGNATION -  GIS 4
 DG6399  PID         -  DG6399
 DG6399  STATE/COUNTY-  MD/TALBOT
 DG6399  COUNTRY     -  US
 DG6399  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6399
 DG6399                         *CURRENT SURVEY CONTROL
 DG6399  ______________________________________________________________________
 DG6399* NAD 83(1986) POSITION- 38 46 26.41   (N) 076 12 44.80   (W)   HD_HELD1
 DG6399* NAVD 88 ORTHO HEIGHT -     1.862 (meters)        6.11  (feet) ADJUSTED
 DG6399  ______________________________________________________________________
 DG6399  GEOID HEIGHT    -        -34.384 (meters)                     GEOID18
 DG6399  DYNAMIC HEIGHT  -          1.861 (meters)        6.11  (feet) COMP
 DG6399  MODELED GRAVITY -    980,043.3   (mgal)                       NAVD 88
 DG6399
 DG6399  VERT ORDER      -  SECOND    CLASS I
 DG6399
 DG6399.The horizontal coordinates were determined by differentially corrected
 DG6399.hand held GPS observations or other comparable positioning techniques
 DG6399.and have an estimated accuracy of +/- 3 meters.
 DG6399
 DG6399.The orthometric height was determined by differential leveling and
 DG6399.adjusted by the NATIONAL GEODETIC SURVEY
 DG6399.in September 2004.
 DG6399
 DG6399.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6399.GEOID18 height accuracy estimate available here.
 DG6399
 DG6399.Click photographs - Photos may exist for this station.
 DG6399
 DG6399.The dynamic height is computed by dividing the NAVD 88
 DG6399.geopotential number by the normal gravity value computed on the
 DG6399.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6399.degrees latitude (g = 980.6199 gals.).
 DG6399
 DG6399.The modeled gravity was interpolated from observed gravity values.
 DG6399
 DG6399;                    North         East    Units  Estimated Accuracy
 DG6399;SPC MD       -   123,213.9     468,435.4     MT  (+/- 3 meters HH1 GPS) 
 DG6399
 DG6399_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9467792395(NAD 83)
 DG6399
 DG6399                          SUPERSEDED SURVEY CONTROL
 DG6399
 DG6399.No superseded survey control is available for this station.
 DG6399
 DG6399_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6399_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6399_STAMPING: NO GIS 4 1995
 DG6399_MARK LOGO: MD1370
 DG6399_PROJECTION: FLUSH
 DG6399_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6399_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6399+STABILITY: SURFACE MOTION
 DG6399_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6399+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 DG6399
 DG6399  HISTORY     - Date     Condition        Report By
 DG6399  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6399  HISTORY     - 19991213 GOOD             MDSHA
 DG6399  HISTORY     - 20060328 GOOD             USPSQD
 DG6399  HISTORY     - 20231213 GOOD             MDSHA
 DG6399
 DG6399                          STATION DESCRIPTION
 DG6399
 DG6399'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6399'THE MARK IS LOCATED ABOUT 2.9 MI (4.67 KM) NORTHWEST OF ROYAL OAK, 2.4
 DG6399'MI (3.86 KM) NORTHWEST OF NEWCOMB AND 1.0 MI (1.61 KM) SOUTHEAST OF
 DG6399'ST. MICHAELS.  TO REACH THE MARK FROM THE POST OFFICE IN ST. MICHAELS,
 DG6399'PROCEED SOUTHEAST ALONG MARYLAND STATE HIGHWAY 33 FOR 0.95 MILES (1.53
 DG6399'KM) TO THE MARK ON THE LEFT, LOCATED IN FRONT OF THE TALBOT BANK.  IT
 DG6399'IS 51.5 FEET (15.7 M) NORTHEAST OF THE CENTER LINE OF THE HIGHWAY,
 DG6399'68.5 FEET (20.9 M) SOUTHWEST OF THE SOUTH CORNER OF THE TALBOT BANK,
 DG6399'30.8 FEET (9.4 M) NORTHWEST OF POWER POLE NUMBER 29481-08187, 32.5
 DG6399'FEET (9.9 M) SOUTHEAST OF AN 8-INCH (20 CM) ORNAMENTAL PEAR TREE, 20.5
 DG6399'FEET (6.2 M) WEST OF THE SOUTH CORNER OF THE MACADAM PARKING LOT AND
 DG6399'IN LINE WITH THE PROJECTED CENTER OF THE GRAVEL DRIVEWAY LEADING
 DG6399'SOUTHWEST TO HOUSE NUMBER 1018.  IT IS A TOSM DISK SET IN THE TOP OF A
 DG6399'7-INCH (18 CM) ROUND CONCRETE POST FLUSH WITH THE GROUND AND 1 FOOT
 DG6399'(0.3 M) LOWER THAN THE SURFACE OF THE HIGHWAY.
 DG6399
 DG6399                          STATION RECOVERY (2006)
 DG6399
 DG6399'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6399'RECOVERED IN GOOD CONDITION.
 DG6399
 DG6399                          STATION RECOVERY (2023)
 DG6399
 DG6399'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG6399'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7723 ***********************************************************************
 AC7723  DESIGNATION -  GIS 40
 AC7723  PID         -  AC7723
 AC7723  STATE/COUNTY-  MD/BALTIMORE
 AC7723  COUNTRY     -  US
 AC7723  USGS QUAD   -  REISTERSTOWN (2016)
 AC7723
 AC7723                         *CURRENT SURVEY CONTROL
 AC7723  ______________________________________________________________________
 AC7723* NAD 83(2011) POSITION- 39 28 39.76328(N) 076 50 48.43172(W)   ADJUSTED
 AC7723* NAD 83(2011) ELLIP HT-   163.653 (meters)        (06/27/12)   ADJUSTED
 AC7723* NAD 83(2011) EPOCH   -  2010.00
 AC7723* NAVD 88 ORTHO HEIGHT -   195.724 (meters)      642.14  (feet) ADJUSTED
 AC7723  ______________________________________________________________________
 AC7723  GEOID HEIGHT    -        -32.069 (meters)                     GEOID18
 AC7723  NAD 83(2011) X  -  1,121,828.610 (meters)                     COMP
 AC7723  NAD 83(2011) Y  - -4,800,569.971 (meters)                     COMP
 AC7723  NAD 83(2011) Z  -  4,033,497.861 (meters)                     COMP
 AC7723  LAPLACE CORR    -         -0.91  (seconds)                    DEFLEC18
 AC7723  DYNAMIC HEIGHT  -        195.623 (meters)      641.81  (feet) COMP
 AC7723  MODELED GRAVITY -    980,103.1   (mgal)                       NAVD 88
 AC7723
 AC7723  VERT ORDER      -  SECOND    CLASS II
 AC7723
 AC7723  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7723  Standards:
 AC7723         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7723            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7723  -------------------------------------------------------------------
 AC7723  NETWORK    0.46   0.90           0.20   0.17   0.46      0.08110299
 AC7723  -------------------------------------------------------------------
 AC7723  Click here for local accuracies and other accuracy information.
 AC7723
 AC7723.The horizontal coordinates were established by GPS observations
 AC7723.and adjusted by the National Geodetic Survey in June 2012.
 AC7723
 AC7723.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7723.been affixed to the stable North American tectonic plate. See 
 AC7723.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7723
 AC7723.The horizontal coordinates are valid at the epoch date displayed above
 AC7723.which is a decimal equivalence of Year/Month/Day.
 AC7723
 AC7723.The orthometric height was determined by differential leveling and
 AC7723.adjusted by the NATIONAL GEODETIC SURVEY
 AC7723.in February 1998.
 AC7723
 AC7723.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7723.GEOID18 height accuracy estimate available here.
 AC7723
 AC7723.Click photographs - Photos may exist for this station.
 AC7723
 AC7723.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7723
 AC7723.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7723
 AC7723.The ellipsoidal height was determined by GPS observations
 AC7723.and is referenced to NAD 83.
 AC7723
 AC7723.The dynamic height is computed by dividing the NAVD 88
 AC7723.geopotential number by the normal gravity value computed on the
 AC7723.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7723.degrees latitude (g = 980.6199 gals.).
 AC7723
 AC7723.The modeled gravity was interpolated from observed gravity values.
 AC7723
 AC7723. The following values were computed from the NAD 83(2011) position.
 AC7723
 AC7723;                    North         East     Units Scale Factor Converg.
 AC7723;SPC MD       -   201,051.437   413,182.677   MT  1.00000497   +0 05 46.2
 AC7723;SPC MD       -   659,616.26  1,355,583.50   sFT  1.00000497   +0 05 46.2
 AC7723;UTM  18      - 4,371,418.831   341,159.078   MT  0.99991065   -1 10 27.8
 AC7723
 AC7723!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7723!SPC MD       -   0.99997433  x   1.00000497  =   0.99997930
 AC7723!UTM  18      -   0.99997433  x   0.99991065  =   0.99988498
 AC7723
 AC7723_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4115971418(NAD 83)
 AC7723
 AC7723                          SUPERSEDED SURVEY CONTROL
 AC7723
 AC7723  NAD 83(2007)-  39 28 39.76344(N)    076 50 48.43245(W) AD(2002.00) 0
 AC7723  ELLIP H (02/10/07)  163.672  (m)                       GP(2002.00)    
 AC7723  ELLIP H (08/30/02)  163.687  (m)                       GP(       ) 4 2
 AC7723  NAD 83(1991)-  39 28 39.76372(N)    076 50 48.43272(W) AD(       ) 1
 AC7723  ELLIP H (04/08/97)  163.641  (m)                       GP(       ) 3 1
 AC7723  NAVD 88 (04/08/97)  195.7    (m)  GEOID93  model used  GPS OBS        
 AC7723
 AC7723.Superseded values are not recommended for survey control.
 AC7723
 AC7723.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7723.See file dsdata.pdf to determine how the superseded data were derived.
 AC7723
 AC7723_MARKER: DD = SURVEY DISK
 AC7723_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7723_STAMPING: NO. GIS-40 1995
 AC7723_MARK LOGO: MD-005
 AC7723_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7723_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7723+STABILITY: SURFACE MOTION
 AC7723_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7723+SATELLITE: SATELLITE OBSERVATIONS - July 29, 2005
 AC7723
 AC7723  HISTORY     - Date     Condition        Report By
 AC7723  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7723  HISTORY     - 19961002 GOOD             MCCRON
 AC7723  HISTORY     - 20010205 GOOD             GEOMET
 AC7723  HISTORY     - 20050729 GOOD             DEWDAV
 AC7723
 AC7723                          STATION DESCRIPTION
 AC7723
 AC7723'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7723'STATION IS LOCATED ABOUT 1.5 MI (2.4 KM) NORTHWEST OF REISTERSTOWN. TO
 AC7723'REACH STATION FROM THE INTERSECTION OF I-795, BUTLER ROAD AND
 AC7723'WESTMINSTER ROAD (ROUTE 140) GO NORTHWEST ON WESTMINSTER ROAD FOR 0.6
 AC7723'MI (0.97 KM) TO THE STATION ON THE LEFT ON THE SOUTH SIDE OF
 AC7723'WESTMINSTER ROAD ON THE SLOPE OF THE ROAD DITCH BANK ABOUT 150 FT
 AC7723'(45.7 M) WEST OF THE ENTRANCE TO THE REISTERSTOWN BIBLE CHURCH.
 AC7723'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AC7723'SET FLUSH WITH THE GROUND. IT IS 5.02 FT (1.53 M) SOUTH OF THE
 AC7723'EASTBOUND LANE EDGE OF PAVE, 119.37 FT (36.38 M) EAST OF TELEPHONE
 AC7723'POLE NO. 635, 34.80 FT (10.61 M) SOUTHWEST OF THE END OF A CONCRETE
 AC7723'CURB, AND59.74 FT WEST OF TELEPHONE POLE NO. 634.5/830074.
 AC7723
 AC7723                          STATION RECOVERY (1996)
 AC7723
 AC7723'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996
 AC7723'STATION IS LOCATED ABOUTN 1.5 MI (2.41 KM) NORTHWEST OF REISTERSTOWN.
 AC7723'TO REACH STATION FROM THE INTERSECTION OF I-795, BUTLER ROAD AND
 AC7723'WESTMINSTER ROAD (ROUTE 140 ) GO NORTHWEST ON WESTMINSTER ROAD FOR 0.6
 AC7723'MI (0.97 KM) TO THE STATION ON THE LEFT ON THE SOUTH SIDE OF
 AC7723'WESTMINSTER ROAD ON THE SLOPE OF THE ROAD DITCH BANK ABOUT 150 FT
 AC7723'(45.72 M) WEST OF THE ENTRANCE TO THE REISTERSTOWN BIBLE CHURCH.
 AC7723'STATION MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT
 AC7723'SET FLUSH WITH THE GROUND.  IT IS 5.02 FT (1.53 M) SOUTH OF THE
 AC7723'EASTBOUND LANE EDGE OF PAVE, 119.37 FT (36.38 M) EAST  OF TELEPHONE
 AC7723'POLE NO. 635, 34.80 FT (10.61 M) SOUTHWEST OF THE END OF A CONCRETE
 AC7723'CURB, AND 59.74 FT (18.21 M) WEST OF TELEPHONE POLE NO. 634.5/830074.
 AC7723
 AC7723                          STATION RECOVERY (2001)
 AC7723
 AC7723'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2001 (TL)
 AC7723'RECOVERED IN GOOD CONDITION.
 AC7723
 AC7723                          STATION RECOVERY (2005)
 AC7723
 AC7723'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (JY)
 AC7723'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7724 ***********************************************************************
 AC7724  DESIGNATION -  GIS 41
 AC7724  PID         -  AC7724
 AC7724  STATE/COUNTY-  MD/BALTIMORE
 AC7724  COUNTRY     -  US
 AC7724  USGS QUAD   -  REISTERSTOWN (2016)
 AC7724
 AC7724                         *CURRENT SURVEY CONTROL
 AC7724  ______________________________________________________________________
 AC7724* NAD 83(2011) POSITION- 39 23 47.25233(N) 076 52 11.73883(W)   ADJUSTED
 AC7724* NAD 83(2011) ELLIP HT-   130.419 (meters)        (06/27/12)   ADJUSTED
 AC7724* NAD 83(2011) EPOCH   -  2010.00
 AC7724* NAVD 88 ORTHO HEIGHT -   162.5   (meters)      533.    (feet) GPS OBS
 AC7724  ______________________________________________________________________
 AC7724  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AC7724  GEOID HEIGHT    -        -32.931 (meters)                     GEOID93
 AC7724  GEOID HEIGHT    -        -32.051 (meters)                     GEOID18
 AC7724  NAD 83(2011) X  -  1,121,185.582 (meters)                     COMP
 AC7724  NAD 83(2011) Y  - -4,806,578.419 (meters)                     COMP
 AC7724  NAD 83(2011) Z  -  4,026,509.448 (meters)                     COMP
 AC7724  LAPLACE CORR    -         -1.88  (seconds)                    DEFLEC18
 AC7724
 AC7724  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7724  Standards:
 AC7724         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7724            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7724  -------------------------------------------------------------------
 AC7724  NETWORK    0.60   1.06           0.26   0.23   0.54      0.20895163
 AC7724  -------------------------------------------------------------------
 AC7724  Click here for local accuracies and other accuracy information.
 AC7724
 AC7724.The horizontal coordinates were established by GPS observations
 AC7724.and adjusted by the National Geodetic Survey in June 2012.
 AC7724
 AC7724.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7724.been affixed to the stable North American tectonic plate. See 
 AC7724.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7724
 AC7724.The horizontal coordinates are valid at the epoch date displayed above
 AC7724.which is a decimal equivalence of Year/Month/Day.
 AC7724
 AC7724.The orthometric height was determined by GPS observations and a
 AC7724.high-resolution geoid model.
 AC7724
 AC7724.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7724.GEOID18 height accuracy estimate available here.
 AC7724
 AC7724.Click photographs - Photos may exist for this station.
 AC7724
 AC7724.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7724
 AC7724.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7724
 AC7724.The ellipsoidal height was determined by GPS observations
 AC7724.and is referenced to NAD 83.
 AC7724
 AC7724. The following values were computed from the NAD 83(2011) position.
 AC7724
 AC7724;                    North         East     Units Scale Factor Converg.
 AC7724;SPC MD       -   192,027.352   411,204.462   MT  0.99999107   +0 04 53.9
 AC7724;SPC MD       -   630,009.74  1,349,093.31   sFT  0.99999107   +0 04 53.9
 AC7724;UTM  18      - 4,362,441.538   338,981.579   MT  0.99991923   -1 11 13.4
 AC7724
 AC7724!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7724!SPC MD       -   0.99997954  x   0.99999107  =   0.99997061
 AC7724!UTM  18      -   0.99997954  x   0.99991923  =   0.99989877
 AC7724
 AC7724_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3898162441(NAD 83)
 AC7724
 AC7724                          SUPERSEDED SURVEY CONTROL
 AC7724
 AC7724  NAD 83(2007)-  39 23 47.25248(N)    076 52 11.73955(W) AD(2002.00) 0
 AC7724  ELLIP H (02/10/07)  130.437  (m)                       GP(2002.00)    
 AC7724  ELLIP H (08/30/02)  130.446  (m)                       GP(       ) 4 2
 AC7724  NAD 83(1991)-  39 23 47.25277(N)    076 52 11.73958(W) AD(       ) 1
 AC7724  ELLIP H (04/08/97)  130.403  (m)                       GP(       ) 3 1
 AC7724
 AC7724.Superseded values are not recommended for survey control.
 AC7724
 AC7724.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7724.See file dsdata.pdf to determine how the superseded data were derived.
 AC7724
 AC7724_MARKER: DD = SURVEY DISK
 AC7724_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7724_STAMPING: NO. GIS-41 1995
 AC7724_MARK LOGO: MD-005
 AC7724_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7724_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7724+STABILITY: SURFACE MOTION
 AC7724_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7724+SATELLITE: SATELLITE OBSERVATIONS - June 16, 2015
 AC7724
 AC7724  HISTORY     - Date     Condition        Report By
 AC7724  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7724  HISTORY     - 20040521 GOOD             GEOCAC
 AC7724  HISTORY     - 20150616 GOOD             USPSQD
 AC7724
 AC7724                          STATION DESCRIPTION
 AC7724
 AC7724'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7724'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTHWEST OF RANDALLSTOWN AND
 AC7724'ABOUT 6.0 MI (9.7 KM) SOUTHWEST OF REISTERSTOWN. TO REACH STATION FROM
 AC7724'THE I-695 (BELTWAY) OVERPASS OVER LIBERTY ROAD (ROUTE 26) AT EXIT 18,
 AC7724'GO NORTHWEST ON LIBERTY ROAD FOR 7.5 MI (12.1 KM) TO THE INTERSECTION
 AC7724'WITH LIBERTY RIDGE COURT AND THE STATION ON THE RIGHT. STATION MARK IS
 AC7724'SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AC7724'THE GROUND. IT IS 7.35 FT (2.24 M) NORTH OF THE FACE OF CURB, 93.85 FT
 AC7724'(28.61 M) EAST OF POWER POLE NO. 58744, 35.30 FT (10.76 M) SOUTHWEST
 AC7724'OF POWER POLE NO.517272, 55.70 FT (16.98 M) SOUTHEAST OF THE SOUTH LEG
 AC7724'OF A BILLBOARD SIGN, 36.35 FT (11.08 M) NORTH OF THE CENTERLINE OF
 AC7724'LIBERTY ROAD AND 64.35 FT (19.61 M) WEST OF THE CENTERLINE OF LIBERTY
 AC7724'RIDGE COURT.
 AC7724
 AC7724                          STATION RECOVERY (2004)
 AC7724
 AC7724'RECOVERY NOTE BY GEOCACHING 2004 (DH)
 AC7724'CURRENT NAD83 COORDS. ARE GOOD.
 AC7724
 AC7724                          STATION RECOVERY (2015)
 AC7724
 AC7724'RECOVERY NOTE BY US POWER SQUADRON 2015
 AC7724'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7725 ***********************************************************************
 AC7725  DESIGNATION -  GIS 42
 AC7725  PID         -  AC7725
 AC7725  STATE/COUNTY-  MD/BALTIMORE
 AC7725  COUNTRY     -  US
 AC7725  USGS QUAD   -  ELLICOTT CITY (2016)
 AC7725
 AC7725                         *CURRENT SURVEY CONTROL
 AC7725  ______________________________________________________________________
 AC7725* NAD 83(2011) POSITION- 39 22 10.49987(N) 076 48 02.75501(W)   ADJUSTED
 AC7725* NAD 83(2011) ELLIP HT-   148.118 (meters)        (06/27/12)   ADJUSTED
 AC7725* NAD 83(2011) EPOCH   -  2010.00
 AC7725* NAVD 88 ORTHO HEIGHT -   180.3   (meters)      592.    (feet) GPS OBS
 AC7725  ______________________________________________________________________
 AC7725  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AC7725  GEOID HEIGHT    -        -33.028 (meters)                     GEOID93
 AC7725  GEOID HEIGHT    -        -32.145 (meters)                     GEOID18
 AC7725  NAD 83(2011) X  -  1,127,422.252 (meters)                     COMP
 AC7725  NAD 83(2011) Y  - -4,807,078.104 (meters)                     COMP
 AC7725  NAD 83(2011) Z  -  4,024,214.374 (meters)                     COMP
 AC7725  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 AC7725
 AC7725  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7725  Standards:
 AC7725         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7725            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7725  -------------------------------------------------------------------
 AC7725  NETWORK    0.95   1.10           0.40   0.35   0.56      0.42611451
 AC7725  -------------------------------------------------------------------
 AC7725  Click here for local accuracies and other accuracy information.
 AC7725
 AC7725.The horizontal coordinates were established by GPS observations
 AC7725.and adjusted by the National Geodetic Survey in June 2012.
 AC7725
 AC7725.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7725.been affixed to the stable North American tectonic plate. See 
 AC7725.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7725
 AC7725.The horizontal coordinates are valid at the epoch date displayed above
 AC7725.which is a decimal equivalence of Year/Month/Day.
 AC7725
 AC7725.The orthometric height was determined by GPS observations and a
 AC7725.high-resolution geoid model.
 AC7725
 AC7725.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7725.GEOID18 height accuracy estimate available here.
 AC7725
 AC7725.Click photographs - Photos may exist for this station.
 AC7725
 AC7725.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7725
 AC7725.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7725
 AC7725.The ellipsoidal height was determined by GPS observations
 AC7725.and is referenced to NAD 83.
 AC7725
 AC7725. The following values were computed from the NAD 83(2011) position.
 AC7725
 AC7725;                    North         East     Units Scale Factor Converg.
 AC7725;SPC MD       -   189,054.324   417,168.603   MT  0.99998692   +0 07 30.2
 AC7725;SPC MD       -   620,255.73  1,368,660.66   sFT  0.99998692   +0 07 30.2
 AC7725;UTM  18      - 4,359,337.498   344,877.984   MT  0.99989628   -1 08 33.0
 AC7725
 AC7725!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7725!SPC MD       -   0.99997676  x   0.99998692  =   0.99996368
 AC7725!UTM  18      -   0.99997676  x   0.99989628  =   0.99987304
 AC7725
 AC7725_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4487759337(NAD 83)
 AC7725
 AC7725                          SUPERSEDED SURVEY CONTROL
 AC7725
 AC7725  NAD 83(2007)-  39 22 10.50003(N)    076 48 02.75575(W) AD(2002.00) 0
 AC7725  ELLIP H (02/10/07)  148.135  (m)                       GP(2002.00)    
 AC7725  ELLIP H (08/30/02)  148.143  (m)                       GP(       ) 4 2
 AC7725  NAD 83(1991)-  39 22 10.50033(N)    076 48 02.75571(W) AD(       ) 1
 AC7725  ELLIP H (04/08/97)  148.101  (m)                       GP(       ) 3 1
 AC7725
 AC7725.Superseded values are not recommended for survey control.
 AC7725
 AC7725.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7725.See file dsdata.pdf to determine how the superseded data were derived.
 AC7725
 AC7725_MARKER: DD = SURVEY DISK
 AC7725_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7725_STAMPING: NO. GIS-42 1995
 AC7725_MARK LOGO: MD-005
 AC7725_PROJECTION: FLUSH
 AC7725_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7725_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7725+STABILITY: SURFACE MOTION
 AC7725_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7725+SATELLITE: SATELLITE OBSERVATIONS - December 23, 2016
 AC7725
 AC7725  HISTORY     - Date     Condition        Report By
 AC7725  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7725  HISTORY     - 19971124 GOOD             DMW
 AC7725  HISTORY     - 20000221 GOOD             DMW
 AC7725  HISTORY     - 20020918 GOOD             DMW
 AC7725  HISTORY     - 20051111 GOOD             GPSSS
 AC7725  HISTORY     - 20100219 GOOD             JARICE
 AC7725  HISTORY     - 20161223 GOOD             BASE9
 AC7725
 AC7725                          STATION DESCRIPTION
 AC7725
 AC7725'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7725'STATION IS LOCATED AT THE POST OFFICE IN RANDALLSTOWN. TO REACH
 AC7725'STATION FROM THE I-695 (BELTWAY) OVERPASS OVER LIBERTY ROAD (ROUTE 26)
 AC7725'AT EXIT 18, GO NORTHWEST ON LIBERTY ROAD FOR 3.25 MI (5.23 KM) TO THE
 AC7725'POST OFFICE AND THE STATION ON THE LEFT. STATION MARK IS SET IN THE
 AC7725'TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 AC7725'IT IS 72.40 FT (22.07 M) SOUTH OF THE CENTERLINE OF LIBERTY ROAD,
 AC7725'53.32 FT (16.25 M) NORTHWEST OF A FLAG POLE, 52.00 FT (15.85 M)
 AC7725'NORTHWEST OF THE NORTHWEST CORNER OF THE POST OFFICE BUILDING AND 2.76
 AC7725'FT (0.84 M) WEST OF THE THE PARKING LOT CURB.
 AC7725
 AC7725                          STATION RECOVERY (1997)
 AC7725
 AC7725'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AC7725'RECOVERED AS DESCRIBED.
 AC7725
 AC7725                          STATION RECOVERY (2000)
 AC7725
 AC7725'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2000 (DMM)
 AC7725'RECOVERED IN GOOD CONDITION.
 AC7725
 AC7725                          STATION RECOVERY (2002)
 AC7725
 AC7725'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (DMM)
 AC7725'RECOVERED IN GOOD CONDITION.
 AC7725
 AC7725                          STATION RECOVERY (2005)
 AC7725
 AC7725'RECOVERY NOTE BY GPS SALES AND SERVICES 2005 (CJC)
 AC7725'THE SITE IS NO LONGER A POST OFFICE.  THE SAME BUILDING IS NOW THE
 AC7725'RANDALLSTOWN POLICE OFFICE.
 AC7725
 AC7725                          STATION RECOVERY (2010)
 AC7725
 AC7725'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 AC7725'RECOVERED IN GOOD CONDITION.
 AC7725
 AC7725                          STATION RECOVERY (2016)
 AC7725
 AC7725'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 AC7725'BUILDING IS LOCATED AT 9113 LIBERTY ROAD (RT 40) AND IS CURRENTLY
 AC7725'UNUSED.  MARK IS 1.07 M (3.5 FT) NORTH-NORTHEAST FROM A CARSONITE
 AC7725'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7726 ***********************************************************************
 AC7726  DESIGNATION -  GIS 43
 AC7726  PID         -  AC7726
 AC7726  STATE/COUNTY-  MD/BALTIMORE
 AC7726  COUNTRY     -  US
 AC7726  USGS QUAD   -  ELLICOTT CITY (2016)
 AC7726
 AC7726                         *CURRENT SURVEY CONTROL
 AC7726  ______________________________________________________________________
 AC7726* NAD 83(2011) POSITION- 39 19 58.33878(N) 076 52 07.85652(W)   ADJUSTED
 AC7726* NAD 83(2011) ELLIP HT-    52.694 (meters)        (06/27/12)   ADJUSTED
 AC7726* NAD 83(2011) EPOCH   -  2010.00
 AC7726* NAVD 88 ORTHO HEIGHT -    84.777 (meters)      278.14  (feet) ADJUSTED
 AC7726  ______________________________________________________________________
 AC7726  GEOID HEIGHT    -        -32.084 (meters)                     GEOID18
 AC7726  NAD 83(2011) X  -  1,122,279.634 (meters)                     COMP
 AC7726  NAD 83(2011) Y  - -4,810,859.357 (meters)                     COMP
 AC7726  NAD 83(2011) Z  -  4,021,002.124 (meters)                     COMP
 AC7726  LAPLACE CORR    -         -2.78  (seconds)                    DEFLEC18
 AC7726  DYNAMIC HEIGHT  -         84.732 (meters)      277.99  (feet) COMP
 AC7726  MODELED GRAVITY -    980,100.0   (mgal)                       NAVD 88
 AC7726
 AC7726  VERT ORDER      -  SECOND    CLASS II
 AC7726
 AC7726  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7726  Standards:
 AC7726         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7726            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7726  -------------------------------------------------------------------
 AC7726  NETWORK    0.47   0.82           0.21   0.17   0.42     -0.11612085
 AC7726  -------------------------------------------------------------------
 AC7726  Click here for local accuracies and other accuracy information.
 AC7726
 AC7726.The horizontal coordinates were established by GPS observations
 AC7726.and adjusted by the National Geodetic Survey in June 2012.
 AC7726
 AC7726.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7726.been affixed to the stable North American tectonic plate. See 
 AC7726.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7726
 AC7726.The horizontal coordinates are valid at the epoch date displayed above
 AC7726.which is a decimal equivalence of Year/Month/Day.
 AC7726
 AC7726.The orthometric height was determined by differential leveling and
 AC7726.adjusted by the NATIONAL GEODETIC SURVEY
 AC7726.in February 1998.
 AC7726
 AC7726.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7726.GEOID18 height accuracy estimate available here.
 AC7726
 AC7726.Click photographs - Photos may exist for this station.
 AC7726
 AC7726.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7726
 AC7726.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7726
 AC7726.The ellipsoidal height was determined by GPS observations
 AC7726.and is referenced to NAD 83.
 AC7726
 AC7726.The dynamic height is computed by dividing the NAVD 88
 AC7726.geopotential number by the normal gravity value computed on the
 AC7726.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7726.degrees latitude (g = 980.6199 gals.).
 AC7726
 AC7726.The modeled gravity was interpolated from observed gravity values.
 AC7726
 AC7726. The following values were computed from the NAD 83(2011) position.
 AC7726
 AC7726;                    North         East     Units Scale Factor Converg.
 AC7726;SPC MD       -   184,967.994   411,307.500   MT  0.99998161   +0 04 56.3
 AC7726;SPC MD       -   606,849.16  1,349,431.36   sFT  0.99998161   +0 04 56.3
 AC7726;UTM  18      - 4,355,382.101   338,928.391   MT  0.99991944   -1 11 05.2
 AC7726
 AC7726!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7726!SPC MD       -   0.99999173  x   0.99998161  =   0.99997334
 AC7726!UTM  18      -   0.99999173  x   0.99991944  =   0.99991117
 AC7726
 AC7726_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3892855382(NAD 83)
 AC7726
 AC7726                          SUPERSEDED SURVEY CONTROL
 AC7726
 AC7726  NAD 83(2007)-  39 19 58.33892(N)    076 52 07.85729(W) AD(2002.00) 0
 AC7726  ELLIP H (02/10/07)   52.713  (m)                       GP(2002.00)    
 AC7726  ELLIP H (08/30/02)   52.724  (m)                       GP(       ) 4 2
 AC7726  NAD 83(1991)-  39 19 58.33795(N)    076 52 07.85747(W) AD(       ) 1
 AC7726  ELLIP H (04/08/97)   52.655  (m)                       GP(       ) 3 1
 AC7726  NAVD 88 (04/08/97)   84.8    (m)  GEOID93  model used  GPS OBS        
 AC7726
 AC7726.Superseded values are not recommended for survey control.
 AC7726
 AC7726.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7726.See file dsdata.pdf to determine how the superseded data were derived.
 AC7726
 AC7726_MARKER: DD = SURVEY DISK
 AC7726_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7726_STAMPING: NO. GIS-43 1995
 AC7726_MARK LOGO: MD-005
 AC7726_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7726_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7726+STABILITY: SURFACE MOTION
 AC7726_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7726+SATELLITE: SATELLITE OBSERVATIONS - October 29, 2009
 AC7726
 AC7726  HISTORY     - Date     Condition        Report By
 AC7726  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7726  HISTORY     - 19961003 GOOD             MCCRON
 AC7726  HISTORY     - 20050719 GOOD             DEWDAV
 AC7726  HISTORY     - 20091029 GOOD             MD-005
 AC7726
 AC7726                          STATION DESCRIPTION
 AC7726
 AC7726'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7726'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTHWEST OF RANDALLSTOWN AND
 AC7726'ABOUT 5.0 MI (8.0 KM) NORTHWEST OF ELLICOTT CITY NEAR WOODSTOCK. TO
 AC7726'REACH FROM THE NEW POST OFFICE IN WOODSTOCK GO NORTH ON ROUTE 125
 AC7726'(WOODSTOCK ROAD TURNS INTO OLD COURT ROAD) FOR 1.3 MI (2.1 KM) TO THE
 AC7726'BRIDGE OVER THE PATAPSCO RIVER AT THE BALTIMORE-HOWARD COUNTY LINE.
 AC7726'STATION IS LOCATED AT THE END OF THE BRIDGE ON THE LEFT IN A GRASSY
 AC7726'AREA BETWEEN ROUTE 125 AND A PAVED GATED ENTRANCE ROAD TO THE PATAPSCO
 AC7726'VALLEY STATE PARK. IT IS 5.55 FT (1.69 M) WEST OF A GUARDRAIL, 28.50
 AC7726'FT (8.69 M) WEST OF THE CENTERLINE OF ROUTE 125, 32.30 FT (9.85 M)
 AC7726'SOUTH OF THE SOUTHERNMOST POST OF THE GATE TO THE PARK, AND 60.80 FT
 AC7726'(18.53 M) NORTH OF THE NORTHWEST ABUTMENT OF THE CONCRETE BRIDGE.
 AC7726
 AC7726                          STATION RECOVERY (1996)
 AC7726
 AC7726'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996
 AC7726'STATION IS LOCATED ABOUT 5.0 MI (8.05 KM) SOUTHWEST OF RANDALLSTOWN
 AC7726'AND ABOUT 5.0 MI (8.05 KM) NORTHWEST OF ELLICOTT CITY NEAR WOODSTOCK.
 AC7726'TO REACH FROM THE NEW POST OFFICE IN WOODSTOCK GO NORTH ON ROUTE 125
 AC7726'(WOODSTOCK ROAD TURNS INTO OLD COURT ROAD) FOR 1.3 MI (2.09 KM) TO THE
 AC7726'BRIDGE OVER THE PATAPSCO RIVER AT THE BALTIMORE-HOWARD COUNTY LINE.
 AC7726'STATION IS LOCATED AT THE END OF THE BRIDGE ON THE LEFT IN A GRASSY
 AC7726'AREA BETWEEN ROUTE 125 AND A PAVED GATED ENTRANCE ROAD TO THE PATAPSCO
 AC7726'VALLEY STATE PARK. IT IS 5.55 FT (1.69 M) WEST OF A GUARDRAIL, 28.50
 AC7726'FT (8.69 M) WEST OF THE CENTERLINE OF ROUTE 125, 32.30 FT (9.85 M)
 AC7726'SOUTH OF THE SOUTHERNMOST POST OF THE GATE TO THE PARK, AND 60.80 FT
 AC7726'(18.53 M) NORTH OF THE NORTHWEST ABUTMENT OF THE CONCRETE BRIDGE.
 AC7726
 AC7726                          STATION RECOVERY (2005)
 AC7726
 AC7726'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (JY)
 AC7726'RECOVERED IN GOOD CONDITION.
 AC7726
 AC7726                          STATION RECOVERY (2009)
 AC7726
 AC7726'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AC7726'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7727 ***********************************************************************
 AC7727  DESIGNATION -  GIS 44
 AC7727  PID         -  AC7727
 AC7727  STATE/COUNTY-  MD/BALTIMORE
 AC7727  COUNTRY     -  US
 AC7727  USGS QUAD   -  BALTIMORE WEST (2016)
 AC7727
 AC7727                         *CURRENT SURVEY CONTROL
 AC7727  ______________________________________________________________________
 AC7727* NAD 83(2011) POSITION- 39 22 22.61092(N) 076 42 31.51482(W)   ADJUSTED
 AC7727* NAD 83(2011) ELLIP HT-   108.587 (meters)        (06/27/12)   ADJUSTED
 AC7727* NAD 83(2011) EPOCH   -  2010.00
 AC7727* NAVD 88 ORTHO HEIGHT -   140.899 (meters)      462.27  (feet) ADJUSTED
 AC7727  ______________________________________________________________________
 AC7727  GEOID HEIGHT    -        -32.326 (meters)                     GEOID18
 AC7727  NAD 83(2011) X  -  1,135,078.974 (meters)                     COMP
 AC7727  NAD 83(2011) Y  - -4,805,001.055 (meters)                     COMP
 AC7727  NAD 83(2011) Z  -  4,024,478.038 (meters)                     COMP
 AC7727  LAPLACE CORR    -         -5.08  (seconds)                    DEFLEC18
 AC7727  DYNAMIC HEIGHT  -        140.824 (meters)      462.02  (feet) COMP
 AC7727  MODELED GRAVITY -    980,097.3   (mgal)                       NAVD 88
 AC7727
 AC7727  VERT ORDER      -  SECOND    CLASS II
 AC7727
 AC7727  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7727  Standards:
 AC7727         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7727            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7727  -------------------------------------------------------------------
 AC7727  NETWORK    0.50   0.80           0.22   0.19   0.41      0.06504041
 AC7727  -------------------------------------------------------------------
 AC7727  Click here for local accuracies and other accuracy information.
 AC7727
 AC7727.The horizontal coordinates were established by GPS observations
 AC7727.and adjusted by the National Geodetic Survey in June 2012.
 AC7727
 AC7727.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7727.been affixed to the stable North American tectonic plate. See 
 AC7727.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7727
 AC7727.The horizontal coordinates are valid at the epoch date displayed above
 AC7727.which is a decimal equivalence of Year/Month/Day.
 AC7727
 AC7727.The orthometric height was determined by differential leveling and
 AC7727.adjusted by the NATIONAL GEODETIC SURVEY
 AC7727.in February 1998.
 AC7727
 AC7727.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7727.GEOID18 height accuracy estimate available here.
 AC7727
 AC7727.Click photographs - Photos may exist for this station.
 AC7727
 AC7727.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7727
 AC7727.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7727
 AC7727.The ellipsoidal height was determined by GPS observations
 AC7727.and is referenced to NAD 83.
 AC7727
 AC7727.The dynamic height is computed by dividing the NAVD 88
 AC7727.geopotential number by the normal gravity value computed on the
 AC7727.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7727.degrees latitude (g = 980.6199 gals.).
 AC7727
 AC7727.The modeled gravity was interpolated from observed gravity values.
 AC7727
 AC7727. The following values were computed from the NAD 83(2011) position.
 AC7727
 AC7727;                    North         East     Units Scale Factor Converg.
 AC7727;SPC MD       -   189,449.117   425,096.243   MT  0.99998743   +0 10 58.1
 AC7727;SPC MD       -   621,550.98  1,394,669.92   sFT  0.99998743   +0 10 58.1
 AC7727;UTM  18      - 4,359,556.845   352,811.577   MT  0.99986674   -1 05 03.0
 AC7727
 AC7727!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7727!SPC MD       -   0.99998296  x   0.99998743  =   0.99997039
 AC7727!UTM  18      -   0.99998296  x   0.99986674  =   0.99984971
 AC7727
 AC7727_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5281159556(NAD 83)
 AC7727
 AC7727                          SUPERSEDED SURVEY CONTROL
 AC7727
 AC7727  NAD 83(2007)-  39 22 22.61111(N)    076 42 31.51557(W) AD(2002.00) 0
 AC7727  ELLIP H (02/10/07)  108.605  (m)                       GP(2002.00)    
 AC7727  ELLIP H (08/30/02)  108.612  (m)                       GP(       ) 4 2
 AC7727  NAD 83(1991)-  39 22 22.61153(N)    076 42 31.51547(W) AD(       ) 1
 AC7727  ELLIP H (04/08/97)  108.574  (m)                       GP(       ) 3 1
 AC7727  NAVD 88             140.90   (m)          462.3    (f) LEVELING    3  
 AC7727  NAVD 88 (04/08/97)  140.9    (m)  GEOID93  model used  GPS OBS        
 AC7727
 AC7727.Superseded values are not recommended for survey control.
 AC7727
 AC7727.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7727.See file dsdata.pdf to determine how the superseded data were derived.
 AC7727
 AC7727_MARKER: DD = SURVEY DISK
 AC7727_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7727_STAMPING: NO. GIS-44 1995
 AC7727_MARK LOGO: MD-005
 AC7727_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7727_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7727+STABILITY: SURFACE MOTION
 AC7727_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7727+SATELLITE: SATELLITE OBSERVATIONS - December 02, 2013
 AC7727
 AC7727  HISTORY     - Date     Condition        Report By
 AC7727  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7727  HISTORY     - 19961003 GOOD             MCCRON
 AC7727  HISTORY     - 19990401 GOOD             AMTHOM
 AC7727  HISTORY     - 19990831 GOOD             GEOMET
 AC7727  HISTORY     - 20020629 GOOD             DMW
 AC7727  HISTORY     - 20030114 GOOD             INDIV
 AC7727  HISTORY     - 20070102 POOR             GPSSS
 AC7727  HISTORY     - 20070913 GOOD             JCLS
 AC7727  HISTORY     - 20090323 GOOD             JMTMD
 AC7727  HISTORY     - 20130930 GOOD             INDIV
 AC7727  HISTORY     - 20131202 GOOD             INDIV
 AC7727
 AC7727                          STATION DESCRIPTION
 AC7727
 AC7727'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7727'STATION IS LOCATED NEAR PIKESVILLE AND NEAR THE NORTHWEST CORNER OF
 AC7727'THE BALTIMORE CITY LIMITS. STATION IS ON THE GROUNDS OF THE BALTIMORE
 AC7727'HEWBREW CONGREGATION DAY SCHOOL. TO REACH THE STATION FROM THE PARK
 AC7727'HEIGHTS AVE (ROUTE 129) OVERPASS OVER I-695 (BELTWAY), GO SOUTHEAST ON
 AC7727'PARK HEIGHTS AVE FOR 1.45 MI (2.33 KM) TO THE INTERSECTION WITH SLADE
 AC7727'AVE. TURN LEFT AND GO NORTHEAST ON SLADE AVE FOR 0.15 MI (0.24 KM) TO
 AC7727'THE PARKING LOT OF THE SCHOOL AND THE STATION ON THE RIGHT. STATION IS
 AC7727'SET BETWEEN THE CURB AND THE SIDEWALK AND IS OPPOSITE HOUSE NO.3502.
 AC7727'STATION IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET
 AC7727'FLUSH WITH THE GROUND. IT IS 31.05 FT (9.46 M) SOUTHEAST OF THE
 AC7727'CENTERLINE OF SLADE AVE, 2.84 FT (0.87 M) SOUTHEAST OF THE SOUTH EDGE
 AC7727'OF THE CONCRETE WALK, 75.96 FT (23.15 M) EAST OF THE CENTERLINE OF THE
 AC7727'MIDDLE ENTRANCE, 132.10 FT (40.26 M) WEST OF THE EASTERN PARKING LOT
 AC7727'EXIT, AND 84.70 FT (25.82 M) NORTH OF A LIGHT POLE IN A GRASS CURB
 AC7727'ISLAND.
 AC7727
 AC7727                          STATION RECOVERY (1996)
 AC7727
 AC7727'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996
 AC7727'STATION IS LOCATED NEAR PIKESVILLE AND NEAR THE NORTHWEST CORNER OF
 AC7727'THE BALTIMORE CITY LIMITS.  STATION IS ON THE GROUNDS OF THE BALTIMORE
 AC7727'HEBREW CONGREGATION DAY SCHOOL. TO REACH THE STATION FROM THE PARK
 AC7727'HEIGHTS AVE (ROUTE 129) OVERPASS OVER I-695 (BELTWAY) GO SOUTHEAST ON
 AC7727'PARK HEIGHTS AVE FOR 1.45 MI (2.33 KM) TO THE INTERSECTION WITH SLADE
 AC7727'AVE TURN LEFT AND GO NORTHEAST ON SLADE AVE FOR 0.15 MI (0.24 KM) TO
 AC7727'THE PARKING LOT OF THE SCHOOL AND THE STATION ON THE RIGHT.  STATION
 AC7727'IS SET BETWEEN THE CURB AND THE SIDEWALK AND IS OPPOSITE HOUSE NO.
 AC7727'3502. STATION IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE
 AC7727'MONUMENT SET FLUSH WITH THE GROUND.  IT IS 31.05 FT (9.46 M) SOUTHEAST
 AC7727'OF THE CENTERLINE OF SLADE AVE, 2.84 FT (0.87 M) SOUTHEAST OF THE
 AC7727'SOUTH EDGE OF THE CONCRETE WALK, 75.96 FEET EAST OF THE CENTERLINE OF
 AC7727'THE MIDDLE ENTRANCE, 132.10 FT (40.26 M) WEST OF THE EASTERN PARKING
 AC7727'LOT EXIT, AND 84.70 FT (25.82 M) NORTH OF A LIGHT POLE IN A GRASS CURB
 AC7727'ISLAND.
 AC7727
 AC7727                          STATION RECOVERY (1999)
 AC7727
 AC7727'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 1999
 AC7727'RECOVERED AS DESCRIBED.
 AC7727
 AC7727                          STATION RECOVERY (1999)
 AC7727
 AC7727'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BL)
 AC7727'GOOD.
 AC7727
 AC7727                          STATION RECOVERY (2002)
 AC7727
 AC7727'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (DMM)
 AC7727'RECOVERED IN GOOD CONDITION.
 AC7727
 AC7727                          STATION RECOVERY (2003)
 AC7727
 AC7727'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (RDS)
 AC7727'RECOVERED AS DESCRIBED BY CENTURY ENGINEERING, INC.
 AC7727
 AC7727                          STATION RECOVERY (2007)
 AC7727
 AC7727'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (TED)
 AC7727'RECOVERED IN GOOD CONDITION BY TED OF SURVEY SERVICES OF MD, LLC.
 AC7727
 AC7727                          STATION RECOVERY (2007)
 AC7727
 AC7727'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2007 (MRY)
 AC7727'RECOVERED IN GOOD CONDITION.
 AC7727
 AC7727                          STATION RECOVERY (2009)
 AC7727
 AC7727'RECOVERY NOTE BY JMT ENGINEERING 2009 (CJH)
 AC7727'USED FOR RTK W/ GIS 96 AND BCO 739A.
 AC7727
 AC7727                          STATION RECOVERY (2013)
 AC7727
 AC7727'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013
 AC7727'RECOVERED AS DESCRIBED, USED FOR STATIC SURVEY
 AC7727
 AC7727                          STATION RECOVERY (2013)
 AC7727
 AC7727'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (WRA)
 AC7727'DESCRIPTION IS ADEQUATE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7729 ***********************************************************************
 AC7729  DESIGNATION -  GIS 46
 AC7729  PID         -  AC7729
 AC7729  STATE/COUNTY-  MD/BALTIMORE
 AC7729  COUNTRY     -  US
 AC7729  USGS QUAD   -  RELAY (2016)
 AC7729
 AC7729                         *CURRENT SURVEY CONTROL
 AC7729  ______________________________________________________________________
 AC7729* NAD 83(2011) POSITION- 39 13 50.00700(N) 076 41 58.03361(W)   ADJUSTED
 AC7729* NAD 83(2011) ELLIP HT-    14.991 (meters)        (06/27/12)   ADJUSTED
 AC7729* NAD 83(2011) EPOCH   -  2010.00
 AC7729* NAVD 88 ORTHO HEIGHT -    47.5   (meters)      156.    (feet) GPS OBS
 AC7729  ______________________________________________________________________
 AC7729  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AC7729  GEOID HEIGHT    -        -33.432 (meters)                     GEOID93
 AC7729  GEOID HEIGHT    -        -32.553 (meters)                     GEOID18
 AC7729  NAD 83(2011) X  -  1,138,145.867 (meters)                     COMP
 AC7729  NAD 83(2011) Y  - -4,814,490.826 (meters)                     COMP
 AC7729  NAD 83(2011) Z  -  4,012,185.837 (meters)                     COMP
 AC7729  LAPLACE CORR    -         -6.55  (seconds)                    DEFLEC18
 AC7729
 AC7729  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7729  Standards:
 AC7729         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7729            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7729  -------------------------------------------------------------------
 AC7729  NETWORK    0.41   0.73           0.18   0.15   0.37      0.01836089
 AC7729  -------------------------------------------------------------------
 AC7729  Click here for local accuracies and other accuracy information.
 AC7729
 AC7729.The horizontal coordinates were established by GPS observations
 AC7729.and adjusted by the National Geodetic Survey in June 2012.
 AC7729
 AC7729.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7729.been affixed to the stable North American tectonic plate. See 
 AC7729.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7729
 AC7729.The horizontal coordinates are valid at the epoch date displayed above
 AC7729.which is a decimal equivalence of Year/Month/Day.
 AC7729
 AC7729.The orthometric height was determined by GPS observations and a
 AC7729.high-resolution geoid model.
 AC7729
 AC7729.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7729.GEOID18 height accuracy estimate available here.
 AC7729
 AC7729.Click photographs - Photos may exist for this station.
 AC7729
 AC7729.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7729
 AC7729.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7729
 AC7729.The ellipsoidal height was determined by GPS observations
 AC7729.and is referenced to NAD 83.
 AC7729
 AC7729. The following values were computed from the NAD 83(2011) position.
 AC7729
 AC7729;                    North         East     Units Scale Factor Converg.
 AC7729;SPC MD       -   173,643.840   425,949.681   MT  0.99996897   +0 11 19.1
 AC7729;SPC MD       -   569,696.50  1,397,469.91   sFT  0.99996897   +0 11 19.1
 AC7729;UTM  18      - 4,343,738.347   353,315.742   MT  0.99986493   -1 04 30.0
 AC7729
 AC7729!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7729!SPC MD       -   0.99999765  x   0.99996897  =   0.99996662
 AC7729!UTM  18      -   0.99999765  x   0.99986493  =   0.99986258
 AC7729
 AC7729_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5331543738(NAD 83)
 AC7729
 AC7729                          SUPERSEDED SURVEY CONTROL
 AC7729
 AC7729  NAD 83(2007)-  39 13 50.00728(N)    076 41 58.03445(W) AD(2002.00) 0
 AC7729  ELLIP H (02/10/07)   15.005  (m)                       GP(2002.00)    
 AC7729  ELLIP H (08/30/02)   15.018  (m)                       GP(       ) 4 2
 AC7729  NAD 83(1991)-  39 13 50.00715(N)    076 41 58.03394(W) AD(       ) 1
 AC7729  ELLIP H (04/08/97)   14.941  (m)                       GP(       ) 3 1
 AC7729
 AC7729.Superseded values are not recommended for survey control.
 AC7729
 AC7729.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7729.See file dsdata.pdf to determine how the superseded data were derived.
 AC7729
 AC7729_MARKER: DD = SURVEY DISK
 AC7729_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7729_STAMPING: NO. GIS-46 1995
 AC7729_MARK LOGO: MD-005
 AC7729_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7729_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7729+STABILITY: SURFACE MOTION
 AC7729_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7729+SATELLITE: SATELLITE OBSERVATIONS - April 26, 2007
 AC7729
 AC7729  HISTORY     - Date     Condition        Report By
 AC7729  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7729  HISTORY     - 19961002 GOOD             MCCRON
 AC7729  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 AC7729  HISTORY     - 20050828 GOOD             GEOCAC
 AC7729  HISTORY     - 20070426 GOOD             JCLS
 AC7729
 AC7729                          STATION DESCRIPTION
 AC7729
 AC7729'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7729'STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) NORTHWEST OF GLEN BURNIE AND
 AC7729'ABOUT 6.5 MI (10.5 KM) SOUTHEAST OF ELLICOTT CITY ON THE GROUNDS OF
 AC7729'THE RELAY ELEMENTARY SCHOOL. TO REACH THE STATION FROM THE WASHINGTON
 AC7729'BLVD (ALTERNATE ROUTE 1)OVERPASS OVER I-695 (BELTWAY) GO SOUTH ON
 AC7729'WASHINGTON BLVD FOR 1.65 MI (2.66 KM) TO THE INTERSECTION WITH CLARK
 AC7729'BLVD. TURN RIGHT ON CLARK BLVD AND GO NORTHWEST FOR 0.4 MI (0.6 KM) TO
 AC7729'THE ENTRANCE TO THE SCHOOL. TURN RIGHT INTO THE ENTRANCE AND PROCEED
 AC7729'FOR 135 FT (41.1 M) TO THE STATION ON THE RIGHT. STATION MARK IS SET
 AC7729'IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AC7729'GROUND. IT IS 64.64 FT (19.70 M) SOUTHEAST OF THE SOUTHEAST CORNER OF
 AC7729'THE SCHOOL BUILDING, 28.10 FT (8.56 M) SOUTHEAST OF THE CENTERLINE OF
 AC7729'THE ENTRANCE ROAD, 156.18 FT (47.60 M) NORTHWEST OF A FIRE HYDRANT,
 AC7729'AND 5.70 FT (1.737 M) SOUTH OF THE SOUTHWEST CORNER OF THE PARKING
 AC7729'LOT.
 AC7729
 AC7729                          STATION RECOVERY (1996)
 AC7729
 AC7729'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996
 AC7729'STATION IS LOCATED ABOUT 6.0 MI (9.66 KM) NORTHWEST OF GLEN BURNIE AND
 AC7729'ABOUT 6.5 MI (10.46 KM) SOUTHEAST OF ELLICOTT CITY ON THE GROUNDS OF
 AC7729'THE RELAY ELEMENTARY SCHOOL. TO REACH THE STATION FROM THE WASHINGTON
 AC7729'BLVD (ALTERNATE ROUTE 1) OVERPASS OVER I-695 (BELTWAY) GO SOUTH ON
 AC7729'WASHINGTON BLVD FOR 1.65 MI (2.66 KM) TO THE INTERSECTION WITH CLARK
 AC7729'BLVD. TURN RIGHT ON CLARK BLVD AND GO NORTHWEST FOR 0.4 MI (0.64 KM)
 AC7729'TO THE ENTRANCE TO THE SCHOOL. TURN RIGHT INTO THE ENTRANCE AND
 AC7729'PROCEED FOR 135 FT (41.15 M) TO THE STATION ON THE RIGHT. STATION MARK
 AC7729'IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AC7729'THE GROUND. IT IS 64.64 FT (19.70 M) SOUTHEAST OF THE SOUTHEAST CORNER
 AC7729'OF THE SCHOOL BUILDING, 28.10 FT (8.56 M) SOUTHEAST OF THE CENTERLINE
 AC7729'OF THE ENTRANCE ROAD, 156.18 FT (47.60 M) NORTHWEST OF A FIRE HYDRANT,
 AC7729'AND 5.70 FT (1.74 M) SOUTH OF THE SOUTHWEST CORNER OF THE PARKING LOT.
 AC7729
 AC7729                          STATION RECOVERY (2003)
 AC7729
 AC7729'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 AC7729'NOT FOUND.  RELAY ELEMENTARY SCHOOL IS IN THE NORTHEAST QUADRANT OF
 AC7729'THE INTERSECTION OF CLARK BLVD AND OAKLAND ROAD.
 AC7729
 AC7729                          STATION RECOVERY (2005)
 AC7729
 AC7729'RECOVERY NOTE BY GEOCACHING 2005 (RCF)
 AC7729'RECOVERED IN GOOD CONDITION.
 AC7729
 AC7729                          STATION RECOVERY (2007)
 AC7729
 AC7729'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2007
 AC7729'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2455 ***********************************************************************
 AE2455  DESIGNATION -  GIS 48
 AE2455  PID         -  AE2455
 AE2455  STATE/COUNTY-  MD/BALTIMORE
 AE2455  COUNTRY     -  US
 AE2455  USGS QUAD   -  TOWSON (2016)
 AE2455
 AE2455                         *CURRENT SURVEY CONTROL
 AE2455  ______________________________________________________________________
 AE2455* NAD 83(2011) POSITION- 39 22 43.13998(N) 076 32 19.81079(W)   ADJUSTED
 AE2455* NAD 83(2011) ELLIP HT-    67.028 (meters)        (06/27/12)   ADJUSTED
 AE2455* NAD 83(2011) EPOCH   -  2010.00
 AE2455* NAVD 88 ORTHO HEIGHT -    99.774 (meters)      327.34  (feet) ADJUSTED
 AE2455  ______________________________________________________________________
 AE2455  GEOID HEIGHT    -        -32.756 (meters)                     GEOID18
 AE2455  NAD 83(2011) X  -  1,149,222.815 (meters)                     COMP
 AE2455  NAD 83(2011) Y  - -4,801,191.851 (meters)                     COMP
 AE2455  NAD 83(2011) Z  -  4,024,941.074 (meters)                     COMP
 AE2455  LAPLACE CORR    -         -4.28  (seconds)                    DEFLEC18
 AE2455  DYNAMIC HEIGHT  -         99.721 (meters)      327.17  (feet) COMP
 AE2455  MODELED GRAVITY -    980,092.0   (mgal)                       NAVD 88
 AE2455
 AE2455  VERT ORDER      -  SECOND    CLASS II
 AE2455
 AE2455  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2455  Standards:
 AE2455         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2455            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2455  -------------------------------------------------------------------
 AE2455  NETWORK    0.66   1.08           0.29   0.25   0.55     -0.05390223
 AE2455  -------------------------------------------------------------------
 AE2455  Click here for local accuracies and other accuracy information.
 AE2455
 AE2455.The horizontal coordinates were established by GPS observations
 AE2455.and adjusted by the National Geodetic Survey in June 2012.
 AE2455
 AE2455.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2455.been affixed to the stable North American tectonic plate. See 
 AE2455.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2455
 AE2455.The horizontal coordinates are valid at the epoch date displayed above
 AE2455.which is a decimal equivalence of Year/Month/Day.
 AE2455
 AE2455.The orthometric height was determined by differential leveling and
 AE2455.adjusted by the NATIONAL GEODETIC SURVEY
 AE2455.in February 1998.
 AE2455
 AE2455.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2455.GEOID18 height accuracy estimate available here.
 AE2455
 AE2455.Click photographs - Photos may exist for this station.
 AE2455
 AE2455.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2455
 AE2455.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2455
 AE2455.The ellipsoidal height was determined by GPS observations
 AE2455.and is referenced to NAD 83.
 AE2455
 AE2455.The dynamic height is computed by dividing the NAVD 88
 AE2455.geopotential number by the normal gravity value computed on the
 AE2455.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2455.degrees latitude (g = 980.6199 gals.).
 AE2455
 AE2455.The modeled gravity was interpolated from observed gravity values.
 AE2455
 AE2455. The following values were computed from the NAD 83(2011) position.
 AE2455
 AE2455;                    North         East     Units Scale Factor Converg.
 AE2455;SPC MD       -   190,142.549   439,734.517   MT  0.99998830   +0 17 22.0
 AE2455;SPC MD       -   623,826.01  1,442,695.66   sFT  0.99998830   +0 17 22.0
 AE2455;UTM  18      - 4,359,926.525   367,459.451   MT  0.99981629   -0 58 35.2
 AE2455
 AE2455!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2455!SPC MD       -   0.99998948  x   0.99998830  =   0.99997778
 AE2455!UTM  18      -   0.99998948  x   0.99981629  =   0.99980578
 AE2455
 AE2455_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6745959926(NAD 83)
 AE2455
 AE2455                          SUPERSEDED SURVEY CONTROL
 AE2455
 AE2455  NAD 83(2007)-  39 22 43.14019(N)    076 32 19.81153(W) AD(2002.00) 0
 AE2455  ELLIP H (02/10/07)   67.045  (m)                       GP(2002.00)    
 AE2455  ELLIP H (08/30/02)   67.052  (m)                       GP(       ) 4 2
 AE2455  NAD 83(1991)-  39 22 43.14057(N)    076 32 19.81121(W) AD(       ) 1
 AE2455  ELLIP H (08/28/97)   67.034  (m)                       GP(       ) 3 2
 AE2455  NAVD 88              99.77   (m)          327.3    (f) LEVELING    3  
 AE2455  NAVD 88 (08/28/97)   99.8    (m)  GEOID96  model used  GPS OBS        
 AE2455
 AE2455.Superseded values are not recommended for survey control.
 AE2455
 AE2455.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2455.See file dsdata.pdf to determine how the superseded data were derived.
 AE2455
 AE2455_MARKER: DD = SURVEY DISK
 AE2455_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2455_STAMPING: NO. GIS-48 1995
 AE2455_MARK LOGO: NONE
 AE2455_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE2455_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2455+STABILITY: SURFACE MOTION
 AE2455_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2455+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2009
 AE2455
 AE2455  HISTORY     - Date     Condition        Report By
 AE2455  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2455  HISTORY     - 19960201 GOOD             MCCRON
 AE2455  HISTORY     - 19990401 GOOD             AMTHOM
 AE2455  HISTORY     - 20030114 GOOD             INDIV
 AE2455  HISTORY     - 20060331 GOOD             GPSSS
 AE2455  HISTORY     - 20081216 GOOD             INDIV
 AE2455  HISTORY     - 20090316 GOOD             JMTMD
 AE2455
 AE2455                          STATION DESCRIPTION
 AE2455
 AE2455'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2455'STATION IS LOCATED 6.5 MI (10.46 KM) NORTHEAST OF THE CENTER OF
 AE2455'BALTIMORE IN PARKVILLE. I-695 (BELTWAY) GO SOUTHWEST ON HARFORD ROAD
 AE2455'FOR 0.8 MI (1.29 KM) TO THE STATION ON THE RIGHT.  STATION IS LOCATED
 AE2455'IN A GRASSY AREA ON THE NORTHEAST SIDE OF A PARKING LOT FOR THE
 AE2455'PROVIDENT BANK OF MARYLAND. STATION MARK IS SET IN THE TOP OF A 10
 AE2455'INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS
 AE2455'17.84 FT (5.44 M) SOUTHEAST OF THE NORTHEAST CORNER OF THE PARKING
 AE2455'LOT, 10.17 FT (3.10 M) NORTH OF THE NORTH SIDE OF THE CURB ALONG THE
 AE2455'ENTRANCE TO THE PARKING LOT, 9.18 FT (2.80 M) WEST OF THE WEST SIDE OF
 AE2455'THE BACK OF A CONCRETE SIDEWALK, AND 12.10 FT (3.69 M) SOUTHWEST FROM
 AE2455'POWER POLE NO. 137153.
 AE2455
 AE2455                          STATION RECOVERY (1996)
 AE2455
 AE2455'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2455'STATION IS LOCATED 6.5 MI (10.5 KM) NORTHEAST OF THE CENTER OF
 AE2455'BALTIMORE IN PARKVILLE.  TO REACH THE STATION FROM THE HARFORD ROAD
 AE2455'(ROUTE 147) OVERPASS OVER I-695 (BELTWAY) GO SOUTHWEST ON HARFORD ROAD
 AE2455'FOR 0.8 MI (1.3 KM) TO THE STATION ON THE RIGHT.  STATION IS LOCATED
 AE2455'IN A GRASSY AREA ON THE NORTHEAST SIDE OF A PARKING LOT FOR THE
 AE2455'PROVIDENT BANK OF MARYLAND.  STATION MARK IS SET IN THE TOP OF A 10
 AE2455'INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS
 AE2455'17.84 FT (5.44 M) SOUTHEAST OF THE NORTHEAST CORNER OF THE PARKING
 AE2455'LOT, 10.17 FT (3.10 M) NORTH OF THE NORTH SIDE OF THE CURB ALONG THE
 AE2455'ENTRANCE TO THE PARKING LOT, 9.18 FT (2.80 M) WEST OF THE WEST SIDE OF
 AE2455'THE BACK OF A CONCRETE SIDEWALK, AND 12.10 FT (3.69 M) SOUTHWEST FROM
 AE2455'POWER POLE NO.  137153.
 AE2455
 AE2455                          STATION RECOVERY (1999)
 AE2455
 AE2455'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 1999
 AE2455'RECOVERED AS DESCRIBED.
 AE2455
 AE2455                          STATION RECOVERY (2003)
 AE2455
 AE2455'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (RDS)
 AE2455'RECOVERED AS DESCRIBED BY CENTURY ENGINEERING, INC.
 AE2455
 AE2455                          STATION RECOVERY (2006)
 AE2455
 AE2455'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (S)
 AE2455'RECOVERED BY SULTAN OF FSH ASSOC.
 AE2455
 AE2455                          STATION RECOVERY (2008)
 AE2455
 AE2455'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2008 (WRA)
 AE2455'RECOVERED AS DESCRIBED
 AE2455
 AE2455                          STATION RECOVERY (2009)
 AE2455
 AE2455'RECOVERY NOTE BY JMT ENGINEERING 2009 (CJH)
 AE2455'RECOVERED. USED FOR STATIC GPS W/ GIS 12.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2441 ***********************************************************************
 AE2441  DESIGNATION -  GIS 49
 AE2441  PID         -  AE2441
 AE2441  STATE/COUNTY-  MD/BALTIMORE
 AE2441  COUNTRY     -  US
 AE2441  USGS QUAD   -  WHITE MARSH (2016)
 AE2441
 AE2441                         *CURRENT SURVEY CONTROL
 AE2441  ______________________________________________________________________
 AE2441* NAD 83(2011) POSITION- 39 28 38.47024(N) 076 25 52.96961(W)   ADJUSTED
 AE2441* NAD 83(2011) ELLIP HT-    61.422 (meters)        (06/27/12)   ADJUSTED
 AE2441* NAD 83(2011) EPOCH   -  2010.00
 AE2441* NAVD 88 ORTHO HEIGHT -    94.187 (meters)      309.01  (feet) ADJUSTED
 AE2441  ______________________________________________________________________
 AE2441  GEOID HEIGHT    -        -32.755 (meters)                     GEOID18
 AE2441  NAD 83(2011) X  -  1,156,591.372 (meters)                     COMP
 AE2441  NAD 83(2011) Y  - -4,792,258.322 (meters)                     COMP
 AE2441  NAD 83(2011) Z  -  4,033,402.084 (meters)                     COMP
 AE2441  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 AE2441  DYNAMIC HEIGHT  -         94.138 (meters)      308.85  (feet) COMP
 AE2441  MODELED GRAVITY -    980,106.2   (mgal)                       NAVD 88
 AE2441
 AE2441  VERT ORDER      -  SECOND    CLASS II
 AE2441
 AE2441  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2441  Standards:
 AE2441         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2441            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2441  -------------------------------------------------------------------
 AE2441  NETWORK    0.77   1.20           0.35   0.27   0.61     -0.07883312
 AE2441  -------------------------------------------------------------------
 AE2441  Click here for local accuracies and other accuracy information.
 AE2441
 AE2441.The horizontal coordinates were established by GPS observations
 AE2441.and adjusted by the National Geodetic Survey in June 2012.
 AE2441
 AE2441.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2441.been affixed to the stable North American tectonic plate. See 
 AE2441.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2441
 AE2441.The horizontal coordinates are valid at the epoch date displayed above
 AE2441.which is a decimal equivalence of Year/Month/Day.
 AE2441
 AE2441.The orthometric height was determined by differential leveling and
 AE2441.adjusted by the NATIONAL GEODETIC SURVEY
 AE2441.in February 1998.
 AE2441
 AE2441.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2441.GEOID18 height accuracy estimate available here.
 AE2441
 AE2441.Click photographs - Photos may exist for this station.
 AE2441
 AE2441.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2441
 AE2441.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2441
 AE2441.The ellipsoidal height was determined by GPS observations
 AE2441.and is referenced to NAD 83.
 AE2441
 AE2441.The dynamic height is computed by dividing the NAVD 88
 AE2441.geopotential number by the normal gravity value computed on the
 AE2441.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2441.degrees latitude (g = 980.6199 gals.).
 AE2441
 AE2441.The modeled gravity was interpolated from observed gravity values.
 AE2441
 AE2441. The following values were computed from the NAD 83(2011) position.
 AE2441
 AE2441;                    North         East     Units Scale Factor Converg.
 AE2441;SPC MD       -   201,152.868   448,924.704   MT  1.00000490   +0 21 24.8
 AE2441;SPC MD       -   659,949.03  1,472,847.13   sFT  1.00000490   +0 21 24.8
 AE2441;UTM  18      - 4,370,728.921   376,888.908   MT  0.99978661   -0 54 36.5
 AE2441
 AE2441!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2441!SPC MD       -   0.99999036  x   1.00000490  =   0.99999526
 AE2441!UTM  18      -   0.99999036  x   0.99978661  =   0.99977698
 AE2441
 AE2441_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7688870728(NAD 83)
 AE2441
 AE2441                          SUPERSEDED SURVEY CONTROL
 AE2441
 AE2441  NAD 83(2007)-  39 28 38.47045(N)    076 25 52.97019(W) AD(2002.00) 0
 AE2441  ELLIP H (02/10/07)   61.439  (m)                       GP(2002.00)    
 AE2441  ELLIP H (08/30/02)   61.438  (m)                       GP(       ) 4 2
 AE2441  NAD 83(1991)-  39 28 38.47054(N)    076 25 52.97048(W) AD(       ) 1
 AE2441  ELLIP H (08/28/97)   61.438  (m)                       GP(       ) 3 2
 AE2441  NAVD 88              94.19   (m)          309.0    (f) LEVELING    3  
 AE2441  NAVD 88 (08/28/97)   94.2    (m)  GEOID96  model used  GPS OBS        
 AE2441
 AE2441.Superseded values are not recommended for survey control.
 AE2441
 AE2441.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2441.See file dsdata.pdf to determine how the superseded data were derived.
 AE2441
 AE2441_MARKER: DD = SURVEY DISK
 AE2441_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2441_STAMPING: NO. GIS-49 1995
 AE2441_MARK LOGO: MD-005
 AE2441_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2441_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2441+STABILITY: SURFACE MOTION
 AE2441_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2441+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2015
 AE2441
 AE2441  HISTORY     - Date     Condition        Report By
 AE2441  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2441  HISTORY     - 19960201 GOOD             MCCRON
 AE2441  HISTORY     - 19970702 GOOD             MD-005
 AE2441  HISTORY     - 20150615 GOOD             USPSQD
 AE2441
 AE2441                          STATION DESCRIPTION
 AE2441
 AE2441'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2441'STATION IS LOCATED 16 MI (25.75 KM) NORTHEAST OF THE CENTER OF
 AE2441'BALTIMORE AND ABOUT 1 MI (1.61 KM) NORTHEAST OF FORK. TO REACH STATION
 AE2441'FROM THE INTERSECTION OF HARFORD ROAD (ROUTE 147)AND I-695 (BELTWAY)
 AE2441'GO NORTHEAST ON HARFORD ROAD FOR 7.85 MI (12.63 KM) TO FORK
 AE2441'(INTERSECTION OF SUNSET AVE AND FORK ROAD), CONTINUE ON HARFORD ROAD
 AE2441'NORTHEAST FOR 0.80 MI (1.29 KM) TO THE STATION ON THE LEFT. STATION
 AE2441'MARK IS SET IN THE TOP OF 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH
 AE2441'WITH THE GROUND.  IT IS 41.91 FT (12.77 M) SOUTHEAST OF TELEPHONE POLE
 AE2441'NO. 677, 18.2 FT (5.55 M) NORTHWEST OF THE CENTERLINE OF HARFORD ROAD,
 AE2441'22.25 FT (6.78 M) NORTHEAST FROM THE CENTERLINE OF A PAVED LANE, AND
 AE2441'20.75 FT (6.32 M) SOUTHEAST FROM TELEPHONE POLE NO. 1.
 AE2441
 AE2441                          STATION RECOVERY (1996)
 AE2441
 AE2441'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2441'STATION IS LOCATED 16 MI (25.7 KM) NORTHEAST OF THE CENTER OF
 AE2441'BALTIMORE AND ABOUT 1 MI (1.6 KM) NORTHEAST OF FORK.  TO REACH STATION
 AE2441'FROM THE INTERSECTION OF HARFORD ROAD (ROUTE 147) AND I-695 (BELTWAY)
 AE2441'GO NORTHEAST ON HARFORD ROAD FOR 7.85 MI (12.63 KM) TO FORK
 AE2441'(INTERSECTION OF SUNSET AVE AND FORK ROAD) , CONTINUE ON HARFORD ROAD
 AE2441'NORTHEAST FOR 0.80 MI (1.29 KM) TO THE STATION ON THE LEFT.  STATION
 AE2441'MARK IS SET IN THE TOP OF 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH
 AE2441'WITH THE GROUND.  IT IS 41.91 FT (12.77 M) SOUTHEAST OF TELEPHONE POLE
 AE2441'NO.  677, 18.2 FT (5.5 M) NORTHWEST OF THE CENTERLINE OF HARFORD ROAD,
 AE2441'22.25 FT (6.78 M) NORTHEAST FROM THE CENTERLINE OF A PAVED LANE, AND
 AE2441'20.75 FT (6.32 M) SOUTHEAST FROM TELEPHONE POLE NO. 1.
 AE2441
 AE2441                          STATION RECOVERY (1997)
 AE2441
 AE2441'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AE2441'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AE2441'1997.
 AE2441
 AE2441                          STATION RECOVERY (2015)
 AE2441
 AE2441'RECOVERY NOTE BY US POWER SQUADRON 2015
 AE2441'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7688 ***********************************************************************
 AC7688  DESIGNATION -  GIS 5
 AC7688  PID         -  AC7688
 AC7688  STATE/COUNTY-  MD/C OF BALTIMORE
 AC7688  COUNTRY     -  US
 AC7688  USGS QUAD   -  BALTIMORE EAST (2016)
 AC7688
 AC7688                         *CURRENT SURVEY CONTROL
 AC7688  ______________________________________________________________________
 AC7688* NAD 83(2011) POSITION- 39 15 23.93167(N) 076 31 56.04498(W)   ADJUSTED
 AC7688* NAD 83(2011) ELLIP HT-   -30.024 (meters)        (06/27/12)   ADJUSTED
 AC7688* NAD 83(2011) EPOCH   -  2010.00
 AC7688* NAVD 88 ORTHO HEIGHT -     2.932 (meters)        9.62  (feet) ADJUSTED
 AC7688  ______________________________________________________________________
 AC7688  GEOID HEIGHT    -        -32.950 (meters)                     GEOID18
 AC7688  NAD 83(2011) X  -  1,151,757.321 (meters)                     COMP
 AC7688  NAD 83(2011) Y  - -4,809,332.705 (meters)                     COMP
 AC7688  NAD 83(2011) Z  -  4,014,400.618 (meters)                     COMP
 AC7688  LAPLACE CORR    -         -2.74  (seconds)                    DEFLEC18
 AC7688  DYNAMIC HEIGHT  -          2.931 (meters)        9.62  (feet) COMP
 AC7688  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 AC7688
 AC7688  VERT ORDER      -  THIRD
 AC7688
 AC7688  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7688  Standards:
 AC7688         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7688            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7688  -------------------------------------------------------------------
 AC7688  NETWORK    0.62   1.65           0.25   0.26   0.84      0.09960165
 AC7688  -------------------------------------------------------------------
 AC7688  Click here for local accuracies and other accuracy information.
 AC7688
 AC7688.The horizontal coordinates were established by GPS observations
 AC7688.and adjusted by the National Geodetic Survey in June 2012.
 AC7688
 AC7688.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7688.been affixed to the stable North American tectonic plate. See 
 AC7688.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7688
 AC7688.The horizontal coordinates are valid at the epoch date displayed above
 AC7688.which is a decimal equivalence of Year/Month/Day.
 AC7688
 AC7688.The orthometric height was determined by differential leveling and
 AC7688.adjusted by the NATIONAL GEODETIC SURVEY
 AC7688.in February 1998.
 AC7688
 AC7688.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7688.GEOID18 height accuracy estimate available here.
 AC7688
 AC7688.Click photographs - Photos may exist for this station.
 AC7688
 AC7688.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7688
 AC7688.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7688
 AC7688.The ellipsoidal height was determined by GPS observations
 AC7688.and is referenced to NAD 83.
 AC7688
 AC7688.The dynamic height is computed by dividing the NAVD 88
 AC7688.geopotential number by the normal gravity value computed on the
 AC7688.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7688.degrees latitude (g = 980.6199 gals.).
 AC7688
 AC7688.The modeled gravity was interpolated from observed gravity values.
 AC7688
 AC7688. The following values were computed from the NAD 83(2011) position.
 AC7688
 AC7688;                    North         East     Units Scale Factor Converg.
 AC7688;SPC MD       -   176,601.010   440,372.720   MT  0.99997189   +0 17 36.9
 AC7688;SPC MD       -   579,398.48  1,444,789.50   sFT  0.99997189   +0 17 36.9
 AC7688;UTM  18      - 4,346,376.422   367,798.585   MT  0.99981519   -0 58 11.0
 AC7688
 AC7688!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7688!SPC MD       -   1.00000471  x   0.99997189  =   0.99997660
 AC7688!UTM  18      -   1.00000471  x   0.99981519  =   0.99981990
 AC7688
 AC7688:                Primary Azimuth Mark                     Grid Az
 AC7688:SPC MD       -  GIS 5A                                   169 14 11.0
 AC7688:UTM  18      -  GIS 5A                                   170 29 58.9
 AC7688
 AC7688_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6779846376(NAD 83)
 AC7688
 AC7688|---------------------------------------------------------------------|
 AC7688| PID    Reference Object                     Distance      Geod. Az  |
 AC7688|                                                           dddmmss.s |
 AC7688| AC7732 GIS 5A                              APPROX. 1.1 KM 1693147.9 |
 AC7688|---------------------------------------------------------------------|
 AC7688
 AC7688                          SUPERSEDED SURVEY CONTROL
 AC7688
 AC7688  NAD 83(2007)-  39 15 23.93194(N)    076 31 56.04578(W) AD(2002.00) 0
 AC7688  ELLIP H (02/10/07)  -30.008  (m)                       GP(2002.00)    
 AC7688  ELLIP H (08/30/02)  -29.992  (m)                       GP(       ) 4 2
 AC7688  NAD 83(1991)-  39 15 23.93183(N)    076 31 56.04526(W) AD(       ) 1
 AC7688  ELLIP H (04/08/97)  -30.076  (m)                       GP(       ) 3 1
 AC7688  NAVD 88 (04/08/97)    2.9    (m)  GEOID93  model used  GPS OBS        
 AC7688
 AC7688.Superseded values are not recommended for survey control.
 AC7688
 AC7688.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7688.See file dsdata.pdf to determine how the superseded data were derived.
 AC7688
 AC7688_MARKER: DD = SURVEY DISK
 AC7688_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7688_STAMPING: NO. GIS-5 1995
 AC7688_MARK LOGO: MD-005
 AC7688_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7688_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7688+STABILITY: SURFACE MOTION
 AC7688_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7688+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AC7688
 AC7688  HISTORY     - Date     Condition        Report By
 AC7688  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7688
 AC7688                          STATION DESCRIPTION
 AC7688
 AC7688'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7688'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) FROM THE CENTER OF BALTIMORE
 AC7688'AT DUNDALK. TO REACH THE STATION FROM THE NORTHBOUND LANE OF I-695
 AC7688'(OUTER LOOP OF BELTWAY) TAKE EXIT 44 TO BROENING HIGHWAY AFTER THE
 AC7688'TOLL PLAZA OF THE FRANCIS SCOTT KEY BRIDGE. GO NORTHWEST ON BROENING
 AC7688'HIGHWAY FOR 2.4 MI (3.9 KM) TO THE STATION ON THE LEFT IN A CURB
 AC7688'ISLAND JUST SOUTHEAST OF THE NORTH SERVICE ROAD ENTRANCE TO THE
 AC7688'DUNDALK MARINE TERMINAL. STATION MARK IS SET IN THE TOP OF A 10 IN
 AC7688'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 11.40 FT
 AC7688'(3.47 M) SOUTHWEST OF THE SOUTH SIDE OF A CONCRETE WALK, 11.18 FT
 AC7688'(3.41 M) NORTHEAST OF THE FACE OF CURB, 68.37 FT (20.84 M) SOUTHEAST
 AC7688'OF A STEEL TRAFFIC LIGHT POLE, 88.48 FT (26.97 M) EAST OF THE
 AC7688'NORTHWEST CORNER OF A FENCE AND 80.65 FT. WEST OF THE NORTHEAST CORNER
 AC7688'OF THE FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6400 ***********************************************************************
 DG6400  DESIGNATION -  GIS 5
 DG6400  PID         -  DG6400
 DG6400  STATE/COUNTY-  MD/TALBOT
 DG6400  COUNTRY     -  US
 DG6400  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6400
 DG6400                         *CURRENT SURVEY CONTROL
 DG6400  ______________________________________________________________________
 DG6400* NAD 83(1986) POSITION- 38 46 37.29   (N) 076 13 02.28   (W)   HD_HELD1
 DG6400* NAVD 88 ORTHO HEIGHT -     2.332 (meters)        7.65  (feet) ADJUSTED
 DG6400  ______________________________________________________________________
 DG6400  GEOID HEIGHT    -        -34.366 (meters)                     GEOID18
 DG6400  DYNAMIC HEIGHT  -          2.330 (meters)        7.64  (feet) COMP
 DG6400  MODELED GRAVITY -    980,044.1   (mgal)                       NAVD 88
 DG6400
 DG6400  VERT ORDER      -  SECOND    CLASS I
 DG6400
 DG6400.The horizontal coordinates were determined by differentially corrected
 DG6400.hand held GPS observations or other comparable positioning techniques
 DG6400.and have an estimated accuracy of +/- 3 meters.
 DG6400
 DG6400.The orthometric height was determined by differential leveling and
 DG6400.adjusted by the NATIONAL GEODETIC SURVEY
 DG6400.in September 2004.
 DG6400
 DG6400.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6400.GEOID18 height accuracy estimate available here.
 DG6400
 DG6400.Click photographs - Photos may exist for this station.
 DG6400
 DG6400.The dynamic height is computed by dividing the NAVD 88
 DG6400.geopotential number by the normal gravity value computed on the
 DG6400.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6400.degrees latitude (g = 980.6199 gals.).
 DG6400
 DG6400.The modeled gravity was interpolated from observed gravity values.
 DG6400
 DG6400;                    North         East    Units  Estimated Accuracy
 DG6400;SPC MD       -   123,545.8     468,010.6     MT  (+/- 3 meters HH1 GPS) 
 DG6400
 DG6400_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9426092736(NAD 83)
 DG6400
 DG6400                          SUPERSEDED SURVEY CONTROL
 DG6400
 DG6400.No superseded survey control is available for this station.
 DG6400
 DG6400_MARKER: DV = VERTICAL CONTROL DISK
 DG6400_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6400_STAMPING: NO GIS 5 1995
 DG6400_MARK LOGO: MD1370
 DG6400_PROJECTION: FLUSH
 DG6400_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6400_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6400+STABILITY: SURFACE MOTION
 DG6400_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6400+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 DG6400
 DG6400  HISTORY     - Date     Condition        Report By
 DG6400  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6400  HISTORY     - 19991213 GOOD             MDSHA
 DG6400  HISTORY     - 20060328 GOOD             USPSQD
 DG6400  HISTORY     - 20210809 GOOD             MDSHA
 DG6400  HISTORY     - 20231213 GOOD             MDSHA
 DG6400
 DG6400                          STATION DESCRIPTION
 DG6400
 DG6400'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6400'THE MARK IS LOCATED ABOUT 2.9 MI (4.67 KM) EAST OF BOZMAN, 2.7 MI
 DG6400'(4.35 KM) NORTHWEST OF NEWCOMB AND IN THE TOWN OF ST MICHAELS.  TO
 DG6400'REACH THE MARK FROM THE POST OFFICE IN SAINT MICHAELS, PROCEED
 DG6400'SOUTHEAST ALONG MARYLAND STATE HIGHWAY 33 FOR 0.6 MILES (1.0 KM) TO
 DG6400'THE MARK ON THE RIGHT.  IT IS 33.1 FEET (10.1 M) SOUTHWEST OF THE
 DG6400'CENTER LINE OF THE HIGHWAY, 30.7 FEET (9.4 M) SOUTHEAST OF POWER POLE
 DG6400'NUMBER 29335-08301, 81.2 FEET (24.7 M) SOUTH AND ACROSS THE HIGHWAY
 DG6400'FROM POWER POLE NUMBER 29338-08307, 109.7 FEET (33.4 M) NORTHWEST OF
 DG6400'POWER POLE NUMBER 29345-08291 AND 3.5 FEET (1.1 M) NORTHEAST OF A
 DG6400'CARSONITE WITNESS POST.  IT IS A TOSM DISK SET IN THE TOP OF A 7-INCH
 DG6400'(18 CM) ROUND CONCRETE POST FLUSH WITH THE GROUND AND LEVEL WITH THE
 DG6400'SURFACE OF THE HIGHWAY.
 DG6400
 DG6400                          STATION RECOVERY (2006)
 DG6400
 DG6400'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6400'RECOVERED IN GOOD CONDITION.
 DG6400
 DG6400                          STATION RECOVERY (2021)
 DG6400
 DG6400'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (WAC)
 DG6400'THE MARK IS SITUATED 11.2 FT (3.4 M) SOUTHWEST OF SOUTHWEST EDGE OF
 DG6400'PAVEMENT OF MD ROUTE 33, 30.2 FT (9.2 M) SOUTHEAST OF CHOPTANK POWER
 DG6400'POLE 63227 (FORMERLY POLE 29335 08301) AND 106.3 FT (32.4 M) NORTHWEST
 DG6400'OF CHOPTANK POWER POLE 63228 (FORMERLY POLE 29345 08291).
 DG6400
 DG6400                          STATION RECOVERY (2023)
 DG6400
 DG6400'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG6400'RECOVERED IN GOOD CONDITION.
 DG6400'
 DG6400'NOTE-ADD-THE MARK IS 34.6 FT (10.5 M) SOUTHWEST OF THE CENTERLINE OF
 DG6400'STATE ROUTE 33 AND 30.4 FT (9.3 M) NORTHEAST OF OF THE CENTERLINE OF A
 DG6400'PAVED TRAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2442 ***********************************************************************
 AE2442  DESIGNATION -  GIS 50
 AE2442  PID         -  AE2442
 AE2442  STATE/COUNTY-  MD/BALTIMORE
 AE2442  COUNTRY     -  US
 AE2442  USGS QUAD   -  WHITE MARSH (2016)
 AE2442
 AE2442                         *CURRENT SURVEY CONTROL
 AE2442  ______________________________________________________________________
 AE2442* NAD 83(2011) POSITION- 39 28 43.08378(N) 076 25 20.95729(W)   ADJUSTED
 AE2442* NAD 83(2011) ELLIP HT-    39.567 (meters)        (06/27/12)   ADJUSTED
 AE2442* NAD 83(2011) EPOCH   -  2010.00
 AE2442* NAVD 88 ORTHO HEIGHT -    72.325 (meters)      237.29  (feet) ADJUSTED
 AE2442  ______________________________________________________________________
 AE2442  GEOID HEIGHT    -        -32.767 (meters)                     GEOID18
 AE2442  NAD 83(2011) X  -  1,157,309.920 (meters)                     COMP
 AE2442  NAD 83(2011) Y  - -4,791,974.431 (meters)                     COMP
 AE2442  NAD 83(2011) Z  -  4,033,498.013 (meters)                     COMP
 AE2442  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 AE2442  DYNAMIC HEIGHT  -         72.288 (meters)      237.16  (feet) COMP
 AE2442  MODELED GRAVITY -    980,106.1   (mgal)                       NAVD 88
 AE2442
 AE2442  VERT ORDER      -  SECOND    CLASS II
 AE2442
 AE2442  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2442  Standards:
 AE2442         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2442            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2442  -------------------------------------------------------------------
 AE2442  NETWORK    2.09   2.76           1.02   0.52   1.41     -0.21165652
 AE2442  -------------------------------------------------------------------
 AE2442  Click here for local accuracies and other accuracy information.
 AE2442
 AE2442.The horizontal coordinates were established by GPS observations
 AE2442.and adjusted by the National Geodetic Survey in June 2012.
 AE2442
 AE2442.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2442.been affixed to the stable North American tectonic plate. See 
 AE2442.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2442
 AE2442.The horizontal coordinates are valid at the epoch date displayed above
 AE2442.which is a decimal equivalence of Year/Month/Day.
 AE2442
 AE2442.The orthometric height was determined by differential leveling and
 AE2442.adjusted by the NATIONAL GEODETIC SURVEY
 AE2442.in February 1998.
 AE2442
 AE2442.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2442.GEOID18 height accuracy estimate available here.
 AE2442
 AE2442.Click photographs - Photos may exist for this station.
 AE2442
 AE2442.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2442
 AE2442.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2442
 AE2442.The ellipsoidal height was determined by GPS observations
 AE2442.and is referenced to NAD 83.
 AE2442
 AE2442.The dynamic height is computed by dividing the NAVD 88
 AE2442.geopotential number by the normal gravity value computed on the
 AE2442.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2442.degrees latitude (g = 980.6199 gals.).
 AE2442
 AE2442.The modeled gravity was interpolated from observed gravity values.
 AE2442
 AE2442. The following values were computed from the NAD 83(2011) position.
 AE2442
 AE2442;                    North         East     Units Scale Factor Converg.
 AE2442;SPC MD       -   201,299.952   449,688.899   MT  1.00000513   +0 21 44.9
 AE2442;SPC MD       -   660,431.59  1,475,354.33   sFT  1.00000513   +0 21 44.9
 AE2442;UTM  18      - 4,370,859.042   377,656.000   MT  0.99978429   -0 54 16.3
 AE2442
 AE2442!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2442!SPC MD       -   0.99999379  x   1.00000513  =   0.99999892
 AE2442!UTM  18      -   0.99999379  x   0.99978429  =   0.99977808
 AE2442
 AE2442_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7765570859(NAD 83)
 AE2442
 AE2442                          SUPERSEDED SURVEY CONTROL
 AE2442
 AE2442  NAD 83(2007)-  39 28 43.08400(N)    076 25 20.95790(W) AD(2002.00) 0
 AE2442  ELLIP H (02/10/07)   39.585  (m)                       GP(2002.00)    
 AE2442  ELLIP H (08/30/02)   39.583  (m)                       GP(       ) 4 2
 AE2442  NAD 83(1991)-  39 28 43.08402(N)    076 25 20.95810(W) AD(       ) 1
 AE2442  ELLIP H (08/28/97)   39.581  (m)                       GP(       ) 3 2
 AE2442  NAVD 88 (08/28/97)   72.3    (m)  GEOID96  model used  GPS OBS        
 AE2442
 AE2442.Superseded values are not recommended for survey control.
 AE2442
 AE2442.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2442.See file dsdata.pdf to determine how the superseded data were derived.
 AE2442
 AE2442_MARKER: DD = SURVEY DISK
 AE2442_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2442_STAMPING: NO. GIS-50 1995
 AE2442_MARK LOGO: MD-005
 AE2442_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2442_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2442+STABILITY: SURFACE MOTION
 AE2442_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2442+SATELLITE: SATELLITE OBSERVATIONS - February 01, 1996
 AE2442
 AE2442  HISTORY     - Date     Condition        Report By
 AE2442  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2442  HISTORY     - 19960201 GOOD             MCCRON
 AE2442  HISTORY     - 20150615 POOR             USPSQD
 AE2442
 AE2442                          STATION DESCRIPTION
 AE2442
 AE2442'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2442'STATION IS LOCATED 16.5 MI (26.55 KM) NORTHEAST FROM THE CENTER OF
 AE2442'BALTIMORE AND ABOUT 1.5 MI (2.41 KM) NORTHEAST OF FORK NEAR THE
 AE2442'BALTIMORE-HARFORD COUNTY LINE. TO REACH THE STATION FROM THE
 AE2442'INTERSECTION OF HARFORD ROAD (ROUTE 147) AND I-695 (BELTWAY) GO
 AE2442'NORTHEAST ON HARFORD ROAD FOR 7.85 MI (12.63 KM) TO FORK (INTERSECTION
 AE2442'OF SUNSET AVE AND FORK ROAD). CONTINUE NORTHEAST ON HARFORD ROAD FOR
 AE2442'1.70 MI (2.74 KM) TO THE STATION ON THE RIGHT APPROXIMATELY 385 FT
 AE2442'(117.35 M) WEST OF LITTLE GUNPOWDER FALLS BRIDGE. STATION MARK IS SET
 AE2442'IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE2442'GROUND.  IT IS 63.3 FT (19.29 M) SOUTHWEST OF POWER POLE NO. 52075,
 AE2442'54.75 FT (16.69 M) SOUTHEAST OF POWER POLE NO. 52074, AND 18.55 FT
 AE2442'(5.65 M) SOUTH OF THE CENTERLINE OF HARFORD ROAD.
 AE2442
 AE2442                          STATION RECOVERY (1996)
 AE2442
 AE2442'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2442'STATION IS LOCATED 16.5 MI (26.6 KM) NORTHEAST FROM THE CENTER OF
 AE2442'BALTIMORE AND ABOUT 1.5 MI (2.4 KM) NORTHEAST OF FORK NEAR THE
 AE2442'BALTIMORE-HARFORD COUNTY LINE.  TO REACH THE STATION FROM THE
 AE2442'INTERSECTION OF HARFORD ROAD (ROUTE 147) AND I-695 (BELTWAY) GO
 AE2442'NORTHEAST ON HARFORD ROAD FOR 7.85 MI (12.63 KM) TO FORK (INTERSECTION
 AE2442'OF SUNSET AVE AND FORK ROAD) .  CONTINUE NORTHEAST ON HARFORD ROAD FOR
 AE2442'1.70 MI (2.74 KM) TO THE STATION ON THE RIGHT APPROXIMATELY 385 FT
 AE2442'(117.3 M) WEST OF LITTLE GUNPOWDER FALLS BRIDGE.  STATION MARK IS SET
 AE2442'IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE2442'GROUND.  IT IS 63.3 FT (19.3 M) SOUTHWEST OF POWER POLE NO.  52075,
 AE2442'54.75 FT (16.69 M) SOUTHEAST OF POWER POLE NO.  52074, AND 18.55 FT
 AE2442'(5.65 M) SOUTH OF THE CENTERLINE OF HARFORD ROAD.
 AE2442
 AE2442                          STATION RECOVERY (2015)
 AE2442
 AE2442'RECOVERY NOTE BY US POWER SQUADRON 2015
 AE2442'THE MARKER IS ATTACHED TO THE CONCRETE BASE, PROTRUDING 1 1/2 INCHES
 AE2442'ABOVE GROUND,BUT THE IDENTIFICATION LETTERS AND WRITING IS 90 PROCENT
 AE2442'
 AE2442'RUBBED OFF BY MOWING EQUIPMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3949 ***********************************************************************
 AE3949  DESIGNATION -  GIS 51
 AE3949  PID         -  AE3949
 AE3949  STATE/COUNTY-  MD/BALTIMORE
 AE3949  COUNTRY     -  US
 AE3949  USGS QUAD   -  SPARROWS POINT (2016)
 AE3949
 AE3949                         *CURRENT SURVEY CONTROL
 AE3949  ______________________________________________________________________
 AE3949* NAD 83(1986) POSITION- 39 13 45.11   (N) 076 25 52.40   (W)   HD_HELD1
 AE3949* NAVD 88 ORTHO HEIGHT -     6.495 (meters)       21.31  (feet) ADJUSTED
 AE3949  ______________________________________________________________________
 AE3949  GEOID HEIGHT    -        -33.032 (meters)                     GEOID18
 AE3949  DYNAMIC HEIGHT  -          6.492 (meters)       21.30  (feet) COMP
 AE3949  MODELED GRAVITY -    980,116.2   (mgal)                       NAVD 88
 AE3949
 AE3949  VERT ORDER      -  THIRD
 AE3949
 AE3949.The horizontal coordinates were determined by differentially corrected
 AE3949.hand held GPS observations or other comparable positioning techniques
 AE3949.and have an estimated accuracy of +/- 3 meters.
 AE3949
 AE3949.The orthometric height was determined by differential leveling and
 AE3949.adjusted by the NATIONAL GEODETIC SURVEY
 AE3949.in February 1998.
 AE3949
 AE3949.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3949.GEOID18 height accuracy estimate available here.
 AE3949
 AE3949.Click photographs - Photos may exist for this station.
 AE3949
 AE3949.The dynamic height is computed by dividing the NAVD 88
 AE3949.geopotential number by the normal gravity value computed on the
 AE3949.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3949.degrees latitude (g = 980.6199 gals.).
 AE3949
 AE3949.The modeled gravity was interpolated from observed gravity values.
 AE3949
 AE3949;                    North         East    Units  Estimated Accuracy
 AE3949;SPC MD       -   173,603.1     449,110.0     MT  (+/- 3 meters HH1 GPS) 
 AE3949
 AE3949_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7646643187(NAD 83)
 AE3949
 AE3949                          SUPERSEDED SURVEY CONTROL
 AE3949
 AE3949.No superseded survey control is available for this station.
 AE3949
 AE3949_MARKER: DD = SURVEY DISK
 AE3949_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3949_STAMPING: NO. GIS-51 1995
 AE3949_MARK LOGO: MD-005
 AE3949_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3949_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3949+STABILITY: SURFACE MOTION
 AE3949_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3949+SATELLITE: SATELLITE OBSERVATIONS - December 03, 2012
 AE3949
 AE3949  HISTORY     - Date     Condition        Report By
 AE3949  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3949  HISTORY     - 20051220 GOOD             GEOCAC
 AE3949  HISTORY     - 20080228 GOOD             DEWDAV
 AE3949  HISTORY     - 20090512 GOOD             MD-005
 AE3949  HISTORY     - 20121203 GOOD             USPSQD
 AE3949
 AE3949                          STATION DESCRIPTION
 AE3949
 AE3949'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3949'STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) SOUTHEAST OF EDGEMERE. TO
 AE3949'REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 42 TO NORTH POINT ROAD
 AE3949'(ROUTE 20) TO FORT HOWARD AND FOLLOW EXIT RAMP TO THE STOP SIGN AT
 AE3949'NORTH POINT ROAD.  TURN RIGHT AND GO SOUTH ON NORTH POINT ROAD FOR 1.6
 AE3949'MI (2.6 KM) TO THE INTERSECTION WITH MILLERS ISLAND ROAD AND THE
 AE3949'STATION ON RIGHT,  IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AE3949'SET FLUSH WITH THE GROUND.  IT IS 66.07 FT (20.14 M) SOUTH OF
 AE3949'TELEPHONE POLE NO.  50, 62.37 FT (19.01 M) NORTH OF POWER POLE NO.
 AE3949'270896/50, 20.12 FT (6.13 M) WEST OF THE CENTERLINE OF NORTH POINT
 AE3949'ROAD AND 19.53 FT (5.95 M) NORTHWEST OF A WATER VALVE MANHOLE.
 AE3949
 AE3949                          STATION RECOVERY (2005)
 AE3949
 AE3949'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 AE3949'RECOVERED IN GOOD CONDITION.
 AE3949
 AE3949                          STATION RECOVERY (2008)
 AE3949
 AE3949'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AE3949'RECOVERED IN GOOD CONDITION.
 AE3949
 AE3949                          STATION RECOVERY (2009)
 AE3949
 AE3949'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE3949'RECOVERED IN GOOD CONDITION.
 AE3949
 AE3949                          STATION RECOVERY (2012)
 AE3949
 AE3949'RECOVERY NOTE BY US POWER SQUADRON 2012
 AE3949'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3950 ***********************************************************************
 AE3950  DESIGNATION -  GIS 52
 AE3950  PID         -  AE3950
 AE3950  STATE/COUNTY-  MD/BALTIMORE
 AE3950  COUNTRY     -  US
 AE3950  USGS QUAD   -  SPARROWS POINT (2016)
 AE3950
 AE3950                         *CURRENT SURVEY CONTROL
 AE3950  ______________________________________________________________________
 AE3950* NAD 83(1986) POSITION- 39 14 37.63   (N) 076 27 08.34   (W)   HD_HELD1
 AE3950* NAVD 88 ORTHO HEIGHT -     4.814 (meters)       15.79  (feet) ADJUSTED
 AE3950  ______________________________________________________________________
 AE3950  GEOID HEIGHT    -        -33.017 (meters)                     GEOID18
 AE3950  DYNAMIC HEIGHT  -          4.811 (meters)       15.78  (feet) COMP
 AE3950  MODELED GRAVITY -    980,108.9   (mgal)                       NAVD 88
 AE3950
 AE3950  VERT ORDER      -  THIRD
 AE3950
 AE3950.The horizontal coordinates were determined by differentially corrected
 AE3950.hand held GPS observations or other comparable positioning techniques
 AE3950.and have an estimated accuracy of +/- 3 meters.
 AE3950
 AE3950.The orthometric height was determined by differential leveling and
 AE3950.adjusted by the NATIONAL GEODETIC SURVEY
 AE3950.in February 1998.
 AE3950
 AE3950.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3950.GEOID18 height accuracy estimate available here.
 AE3950
 AE3950.Click photographs - Photos may exist for this station.
 AE3950
 AE3950.The dynamic height is computed by dividing the NAVD 88
 AE3950.geopotential number by the normal gravity value computed on the
 AE3950.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3950.degrees latitude (g = 980.6199 gals.).
 AE3950
 AE3950.The modeled gravity was interpolated from observed gravity values.
 AE3950
 AE3950;                    North         East    Units  Estimated Accuracy
 AE3950;SPC MD       -   175,211.5     447,278.9     MT  (+/- 3 meters HH1 GPS) 
 AE3950
 AE3950_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7467144835(NAD 83)
 AE3950
 AE3950                          SUPERSEDED SURVEY CONTROL
 AE3950
 AE3950.No superseded survey control is available for this station.
 AE3950
 AE3950_MARKER: DD = SURVEY DISK
 AE3950_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3950_STAMPING: NO. GIS-52 1995
 AE3950_MARK LOGO: MD-005
 AE3950_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3950_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3950+STABILITY: SURFACE MOTION
 AE3950_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3950+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2012
 AE3950
 AE3950  HISTORY     - Date     Condition        Report By
 AE3950  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3950  HISTORY     - 20040406 GOOD             URS
 AE3950  HISTORY     - 20051220 GOOD             GEOCAC
 AE3950  HISTORY     - 20090708 GOOD             MD-005
 AE3950  HISTORY     - 20120519 GOOD             USPSQD
 AE3950
 AE3950                          STATION DESCRIPTION
 AE3950
 AE3950'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3950'STATION IS LOCATED ABOUT 3.0 MI (4.8 KM) SOUTHEAST OF DUNDALK AT
 AE3950'EDGEMERE. TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 42 TO NORTH
 AE3950'POINT ROAD (ROUTE 20) TO FORT HOWARD AND FOLLOW EXIT RAMP TO STOP SIGN
 AE3950'AT NORTH POINT ROAD AND THE STATION ON THE RIGHT.  STATION IS ABOUT
 AE3950'100 FT (30.5 M) SOUTHEAST OF THE INTERSECTION ON THE SOUTHWEST SIDE OF
 AE3950'NORTH POINT ROAD,  IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AE3950'SET FLUSH WITH THE GROUND.  IT IS 19.12 FT (5.83 M) NORTHEAST OF A
 AE3950'WATER VALVE MANHOLE, 18.03 FT (5.50 M) SOUTHWEST OF A WATER VALVE
 AE3950'MANHOLE, 59.50 FT (18.14 M) WEST OF TELEPHONE POLE NO.  242, 28.55 FT
 AE3950'(8.70 M) SOUTHWEST OF THE CENTERLINE OF NORTH POINT ROAD AND 36.75 FT
 AE3950'(11.20 M) NORTH OF THE CENTERLINE OF A PAVED ROAD TO A BRICK SCHOOL
 AE3950'(CLOSED) .
 AE3950
 AE3950                          STATION RECOVERY (2004)
 AE3950
 AE3950'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 AE3950'NEW DESCRIPTION.I-695 TO EXIT 42.NORTH POINT RD TOWARDS FORT HOWARD.
 AE3950'FOLLOW EXIT RAMP TO LIGHT.TURN LEFT ON NORTH POINT RD.GO 0.3 MILES
 AE3950'TO FIRST ASPHALT DRIVE ON RIGHT.VETERANS WAY,ENTRANCE TO VFW.
 AE3950'STATION IS ON THE RIGHT
 AE3950
 AE3950                          STATION RECOVERY (2005)
 AE3950
 AE3950'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 AE3950'RECOVERED IN GOOD CONDITION.
 AE3950
 AE3950                          STATION RECOVERY (2009)
 AE3950
 AE3950'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE3950'RECOVERED IN GOOD CONDITION.
 AE3950
 AE3950                          STATION RECOVERY (2012)
 AE3950
 AE3950'RECOVERY NOTE BY US POWER SQUADRON 2012
 AE3950'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3951 ***********************************************************************
 AE3951  DESIGNATION -  GIS 53
 AE3951  PID         -  AE3951
 AE3951  STATE/COUNTY-  MD/BALTIMORE
 AE3951  COUNTRY     -  US
 AE3951  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3951
 AE3951                         *CURRENT SURVEY CONTROL
 AE3951  ______________________________________________________________________
 AE3951* NAD 83(1986) POSITION- 39 15 35.38   (N) 076 28 24.18   (W)   HD_HELD1
 AE3951* NAVD 88 ORTHO HEIGHT -     5.215 (meters)       17.11  (feet) ADJUSTED
 AE3951  ______________________________________________________________________
 AE3951  GEOID HEIGHT    -        -33.002 (meters)                     GEOID18
 AE3951  DYNAMIC HEIGHT  -          5.212 (meters)       17.10  (feet) COMP
 AE3951  MODELED GRAVITY -    980,102.7   (mgal)                       NAVD 88
 AE3951
 AE3951  VERT ORDER      -  THIRD
 AE3951
 AE3951.The horizontal coordinates were determined by differentially corrected
 AE3951.hand held GPS observations or other comparable positioning techniques
 AE3951.and have an estimated accuracy of +/- 3 meters.
 AE3951
 AE3951.The orthometric height was determined by differential leveling and
 AE3951.adjusted by the NATIONAL GEODETIC SURVEY
 AE3951.in February 1998.
 AE3951
 AE3951.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3951.GEOID18 height accuracy estimate available here.
 AE3951
 AE3951.Click photographs - Photos may exist for this station.
 AE3951
 AE3951.The dynamic height is computed by dividing the NAVD 88
 AE3951.geopotential number by the normal gravity value computed on the
 AE3951.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3951.degrees latitude (g = 980.6199 gals.).
 AE3951
 AE3951.The modeled gravity was interpolated from observed gravity values.
 AE3951
 AE3951;                    North         East    Units  Estimated Accuracy
 AE3951;SPC MD       -   176,981.7     445,450.1     MT  (+/- 3 meters HH1 GPS) 
 AE3951
 AE3951_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7288246645(NAD 83)
 AE3951
 AE3951                          SUPERSEDED SURVEY CONTROL
 AE3951
 AE3951.No superseded survey control is available for this station.
 AE3951
 AE3951_MARKER: DD = SURVEY DISK
 AE3951_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3951_STAMPING: NO. GIS-53 1995
 AE3951_MARK LOGO: MD-005
 AE3951_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3951_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3951+STABILITY: SURFACE MOTION
 AE3951_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3951+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2012
 AE3951
 AE3951  HISTORY     - Date     Condition        Report By
 AE3951  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3951  HISTORY     - 20080228 GOOD             DEWDAV
 AE3951  HISTORY     - 20090715 GOOD             MD-005
 AE3951  HISTORY     - 20120519 GOOD             USPSQD
 AE3951
 AE3951                          STATION DESCRIPTION
 AE3951
 AE3951'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3951'STATION IS LOCATED ABOUT 2.0 MI (3.2 KM) NORTHEAST OF EDGEMERE AND
 AE3951'ABOUT 2.0 MI (3.2 KM) EAST OF DUNDALK. TO REACH STATION FROM I-695
 AE3951'(BELTWAY) TAKE EXIT 41 TO NORTH POINT BLVD (ROUTE 151) .  TURN LEFT ON
 AE3951'NORTH POINT BLVD AND GO SOUTH FOR 1.5 MI (2.4 KM) TO THE INTERSECTION
 AE3951'WITH WISE AVE.  TURN RIGHT AND GO WESTERLY ON WISE AVE FOR 0.65 MI
 AE3951'(1.05 KM) TO THE INERSECTION WITH WATERVIEW ROAD AND THE STATION ON
 AE3951'THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AE3951'MONUMENT SET FLUSH WITH THE GROUND.  IT IS 26.17 FT (7.98 M) SOUTHWEST
 AE3951'OF THE CENTERLINE OF WISE AVE, 11.81 FT (3.60 M) SOUTHWEST OF OF A
 AE3951'WATER VALVE MANHOLE, 8.4 FT (2.6 M) WEST OF A WATER VALVE MANHOLE,
 AE3951'23.66 FT (7.21 M) NORTHEAST OF A SANITARY SEWER MANHOLE, 18.68 FT
 AE3951'(5.69 M) NORTHEAST OF THE CENTERLINE OF WATERVIEW AVE.  7.07 FT (2.15
 AE3951'M) SOUTHEAST OF THE NORTH CORNER OF A CHAIN LINK FENCE AND 8.30 FT
 AE3951'(2.53 M) NORTHEAST OF THE SOUTH CORNER OF THE FENCE.
 AE3951
 AE3951                          STATION RECOVERY (2008)
 AE3951
 AE3951'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AE3951'RECOVERED IN GOOD CONDITION.
 AE3951
 AE3951                          STATION RECOVERY (2009)
 AE3951
 AE3951'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE3951'THIS UPDATED NAD83(2007) POSITION WAS OBTAINED BY THE BALTIMORE COUNTY
 AE3951'LAND SURVEY DIVISION, FOR THE STATION, 39-15-35.38229(N) AND
 AE3951'76-28-24.17791(W).
 AE3951
 AE3951                          STATION RECOVERY (2012)
 AE3951
 AE3951'RECOVERY NOTE BY US POWER SQUADRON 2012
 AE3951'DISTANCE REFERENCE SHOULD BE CHANGED FROM NORTHEAST OF THE CENTERLINE
 AE3951'OF WATERVIEW AVE. TO  NORTHEAST OF THE CENTERLINE OF WATWERVIEW ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3952 ***********************************************************************
 AE3952  DESIGNATION -  GIS 54
 AE3952  PID         -  AE3952
 AE3952  STATE/COUNTY-  MD/BALTIMORE
 AE3952  COUNTRY     -  US
 AE3952  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3952
 AE3952                         *CURRENT SURVEY CONTROL
 AE3952  ______________________________________________________________________
 AE3952* NAD 83(1986) POSITION- 39 15 58.95   (N) 076 29 41.10   (W)   HD_HELD1
 AE3952* NAVD 88 ORTHO HEIGHT -     5.744 (meters)       18.85  (feet) ADJUSTED
 AE3952  ______________________________________________________________________
 AE3952  GEOID HEIGHT    -        -32.983 (meters)                     GEOID18
 AE3952  DYNAMIC HEIGHT  -          5.741 (meters)       18.84  (feet) COMP
 AE3952  MODELED GRAVITY -    980,098.0   (mgal)                       NAVD 88
 AE3952
 AE3952  VERT ORDER      -  THIRD
 AE3952
 AE3952.The horizontal coordinates were determined by differentially corrected
 AE3952.hand held GPS observations or other comparable positioning techniques
 AE3952.and have an estimated accuracy of +/- 3 meters.
 AE3952
 AE3952.The orthometric height was determined by differential leveling and
 AE3952.adjusted by the NATIONAL GEODETIC SURVEY
 AE3952.in February 1998.
 AE3952
 AE3952.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3952.GEOID18 height accuracy estimate available here.
 AE3952
 AE3952.Click photographs - Photos may exist for this station.
 AE3952
 AE3952.The dynamic height is computed by dividing the NAVD 88
 AE3952.geopotential number by the normal gravity value computed on the
 AE3952.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3952.degrees latitude (g = 980.6199 gals.).
 AE3952
 AE3952.The modeled gravity was interpolated from observed gravity values.
 AE3952
 AE3952;                    North         East    Units  Estimated Accuracy
 AE3952;SPC MD       -   177,698.1     443,602.0     MT  (+/- 3 meters HH1 GPS) 
 AE3952
 AE3952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7105047401(NAD 83)
 AE3952
 AE3952                          SUPERSEDED SURVEY CONTROL
 AE3952
 AE3952.No superseded survey control is available for this station.
 AE3952
 AE3952_MARKER: DD = SURVEY DISK
 AE3952_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3952_STAMPING: NO. GIS-54 1995
 AE3952_MARK LOGO: MD-005
 AE3952_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3952_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3952+STABILITY: SURFACE MOTION
 AE3952_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3952+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2012
 AE3952
 AE3952  HISTORY     - Date     Condition        Report By
 AE3952  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3952  HISTORY     - 20090714 GOOD             MD-005
 AE3952  HISTORY     - 20120519 GOOD             USPSQD
 AE3952
 AE3952                          STATION DESCRIPTION
 AE3952
 AE3952'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3952'STATION IS LOCATED ABOUT 6.5 MI (10.5 KM) EAST OF THE CENTER OF
 AE3952'BALTIMORE IN DUNDALK. TO REACH STATION FROM I-696 (BELTWAY) TAKE EXIT
 AE3952'39 TO MERRITT BLVD SOUTH FOR 1.7 MI (2.7 KM) TO THE INTERSECTION WITH
 AE3952'WISE AVE.  TURN LEFT AND GO EAST ON WISE AVE FOR 0.5 MI (0.8 KM) TO
 AE3952'THE INTERSECTION OF LYNCH ROAD.  CONTINUE AHEAD ON WISE AVE FOR ABOUT
 AE3952'200 FT (61.0 M) TO A PAVED ENTRANCE TO THE INVERNESS PRESBYTERIAN
 AE3952'CHURCH AND THE STATION ON RIGHT,  IN THE TOP OF A 10 IN DIAMETER
 AE3952'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 1.12 FT (0.34 M)
 AE3952'SOUTH OF THE SOUTH EDGE OF A CONCRETE WALK, 31.95 FT (9.74 M)
 AE3952'SOUTHEAST OF POWER POLE NO.  274937, 19.5 FT (5.9 M) EAST OF THE END
 AE3952'OF A CHAIN LINK FENCE AND 20.85 FT (6.36 M) NORTH OF THE NORTHWEST
 AE3952'CORNER OF THE CHURCH PARKING LOT.
 AE3952
 AE3952                          STATION RECOVERY (2009)
 AE3952
 AE3952'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE3952'THIS UPDATED NAD83(2007) POSITION WAS OBTAINED BY THE BALTIMORE COUNTY
 AE3952'LAND SURVEY DIVISION, FOR THE STATION, 39-15-58.95446(N) AND
 AE3952'76-29-41.10120(W).
 AE3952
 AE3952                          STATION RECOVERY (2012)
 AE3952
 AE3952'RECOVERY NOTE BY US POWER SQUADRON 2012
 AE3952'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3953 ***********************************************************************
 AE3953  DESIGNATION -  GIS 55
 AE3953  PID         -  AE3953
 AE3953  STATE/COUNTY-  MD/BALTIMORE
 AE3953  COUNTRY     -  US
 AE3953  USGS QUAD   -  BALTIMORE EAST (2016)
 AE3953
 AE3953                         *CURRENT SURVEY CONTROL
 AE3953  ______________________________________________________________________
 AE3953* NAD 83(1986) POSITION- 39 15 04.62   (N) 076 31 14.39   (W)   HD_HELD1
 AE3953* NAVD 88 ORTHO HEIGHT -     6.801 (meters)       22.31  (feet) ADJUSTED
 AE3953  ______________________________________________________________________
 AE3953  GEOID HEIGHT    -        -32.970 (meters)                     GEOID18
 AE3953  DYNAMIC HEIGHT  -          6.798 (meters)       22.30  (feet) COMP
 AE3953  MODELED GRAVITY -    980,098.7   (mgal)                       NAVD 88
 AE3953
 AE3953  VERT ORDER      -  THIRD
 AE3953
 AE3953.The horizontal coordinates were determined by differentially corrected
 AE3953.hand held GPS observations or other comparable positioning techniques
 AE3953.and have an estimated accuracy of +/- 3 meters.
 AE3953
 AE3953.The orthometric height was determined by differential leveling and
 AE3953.adjusted by the NATIONAL GEODETIC SURVEY
 AE3953.in February 1998.
 AE3953
 AE3953.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3953.GEOID18 height accuracy estimate available here.
 AE3953
 AE3953.Click photographs - Photos may exist for this station.
 AE3953
 AE3953.The dynamic height is computed by dividing the NAVD 88
 AE3953.geopotential number by the normal gravity value computed on the
 AE3953.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3953.degrees latitude (g = 980.6199 gals.).
 AE3953
 AE3953.The modeled gravity was interpolated from observed gravity values.
 AE3953
 AE3953;                    North         East    Units  Estimated Accuracy
 AE3953;SPC MD       -   176,010.7     441,374.5     MT  (+/- 3 meters HH1 GPS) 
 AE3953
 AE3953_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6878645764(NAD 83)
 AE3953
 AE3953                          SUPERSEDED SURVEY CONTROL
 AE3953
 AE3953.No superseded survey control is available for this station.
 AE3953
 AE3953_MARKER: DD = SURVEY DISK
 AE3953_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3953_STAMPING: NO. GIS-55 1995
 AE3953_MARK LOGO: MD-005
 AE3953_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3953_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3953+STABILITY: SURFACE MOTION
 AE3953_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3953+SATELLITE: SATELLITE OBSERVATIONS - May 19, 2014
 AE3953
 AE3953  HISTORY     - Date     Condition        Report By
 AE3953  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3953  HISTORY     - 20090721 GOOD             MD-005
 AE3953  HISTORY     - 20140519 GOOD             USPSQD
 AE3953
 AE3953                          STATION DESCRIPTION
 AE3953
 AE3953'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3953'STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) SOUTHEAST OF THE CENTER OF
 AE3953'BALTIMORE IN DUNDALK. TO REACH STATION FROM THE NORTHBOUND LANE OF
 AE3953'I-695 (BELTWAY) TAKE EXIT 44 AFTER THE FRANCIS SCOTT KEY BRIDGE TOLL
 AE3953'PLAZA TO BROENING HIGHWAY.  GO NORTHWEST ON BROENING HIGHWAY FOR 1.7
 AE3953'MI (2.7 KM) TO THE INTERSECTION WITH BELCLARE ROAD.  TURN RIGHT ON
 AE3953'BELCLARE FOR 0.1 MI (0.2 KM) TO THE INTERSECTION WITH DUNDALK AVE.
 AE3953'CROSS DUNDALK AVE TO THE STATION ON THE RIGHT IN A GRASSY CURB ISLAND
 AE3953'ON THE EAST SIDE IF DUNDALK AVE.,  IN THE TOP OF A 10 IN DIAMETER
 AE3953'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 18.22 NORTHWEST OF
 AE3953'A STEEL POLE, 10.62 FT (3.24 M) SOUTHEAST OF A METAL SIGN, 10.80 FT
 AE3953'(3.29 M) NORTHEAST OF THE FACE OF CURB AND 5.49 FT (1.67 M) SOUTHWEST
 AE3953'OF THE FACE OF CURB.
 AE3953
 AE3953                          STATION RECOVERY (2009)
 AE3953
 AE3953'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE3953'THIS UPDATED NAD83(2007) POSITION WAS OBTAINED BY THE BALTIMORE COUNTY
 AE3953'LAND SURVEY DIVISION, FOR THE STATION, 39-15-04.62208(N) AND
 AE3953'76-31-14.38540(W).
 AE3953
 AE3953                          STATION RECOVERY (2014)
 AE3953
 AE3953'RECOVERY NOTE BY US POWER SQUADRON 2014
 AE3953'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4010 ***********************************************************************
 AE4010  DESIGNATION -  GIS 56
 AE4010  PID         -  AE4010
 AE4010  STATE/COUNTY-  MD/BALTIMORE
 AE4010  COUNTRY     -  US
 AE4010  USGS QUAD   -  TOWSON (2016)
 AE4010
 AE4010                         *CURRENT SURVEY CONTROL
 AE4010  ______________________________________________________________________
 AE4010* NAD 83(1986) POSITION- 39 24 52.50   (N) 076 31 01.58   (W)   HD_HELD1
 AE4010* NAVD 88 ORTHO HEIGHT -   119.508 (meters)      392.09  (feet) ADJUSTED
 AE4010  ______________________________________________________________________
 AE4010  GEOID HEIGHT    -        -32.740 (meters)                     GEOID18
 AE4010  DYNAMIC HEIGHT  -        119.445 (meters)      391.88  (feet) COMP
 AE4010  MODELED GRAVITY -    980,097.7   (mgal)                       NAVD 88
 AE4010
 AE4010  VERT ORDER      -  THIRD
 AE4010
 AE4010.The horizontal coordinates were determined by differentially corrected
 AE4010.hand held GPS observations or other comparable positioning techniques
 AE4010.and have an estimated accuracy of +/- 3 meters.
 AE4010
 AE4010.The orthometric height was determined by differential leveling and
 AE4010.adjusted by the NATIONAL GEODETIC SURVEY
 AE4010.in February 1998.
 AE4010
 AE4010.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4010.GEOID18 height accuracy estimate available here.
 AE4010
 AE4010.Click photographs - Photos may exist for this station.
 AE4010
 AE4010.The dynamic height is computed by dividing the NAVD 88
 AE4010.geopotential number by the normal gravity value computed on the
 AE4010.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4010.degrees latitude (g = 980.6199 gals.).
 AE4010
 AE4010.The modeled gravity was interpolated from observed gravity values.
 AE4010
 AE4010;                    North         East    Units  Estimated Accuracy
 AE4010;SPC MD       -   194,141.6     441,585.8     MT  (+/- 3 meters HH1 GPS) 
 AE4010
 AE4010_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6939863882(NAD 83)
 AE4010
 AE4010                          SUPERSEDED SURVEY CONTROL
 AE4010
 AE4010.No superseded survey control is available for this station.
 AE4010
 AE4010_MARKER: DD = SURVEY DISK
 AE4010_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE4010_STAMPING: NO. GIS-56 1995
 AE4010_MARK LOGO: MD-005
 AE4010_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE4010_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4010+STABILITY: SURFACE MOTION
 AE4010_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4010+SATELLITE: SATELLITE OBSERVATIONS - November 05, 2014
 AE4010
 AE4010  HISTORY     - Date     Condition        Report By
 AE4010  HISTORY     - 1995     MONUMENTED       MCCRON
 AE4010  HISTORY     - 20141105 GOOD             USPSQD
 AE4010
 AE4010                          STATION DESCRIPTION
 AE4010
 AE4010'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4010'STATION IS LOCATED ABOUT 4.5 MI (7.2 KM) NORTHEAST OF TOWSON. TO REACH
 AE4010'STATION FROM I-695 (BELTWAY) TAKE EXIT 31 TO HARFORD ROAD (ROUTE 147)
 AE4010'.  GO NORTH ON HARFORD ROAD FOR 1.2 MI (1.9 KM) TO THE INTERSECTION
 AE4010'WITH CUB HILL ROAD.  TURN LEFT ON CUB HILL ROAD AND GO 0.4 MI (0.6 KM)
 AE4010'TO THE INTERSECTION WITH TIPPERARY ROAD AND THE STATION ON THE RIGHT
 AE4010'ON THE NORTHWEST SIDE OF TIPPERARY ROAD BETWEEN CURB AND SISEWALK, IN
 AE4010'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE4010'GROUND.  IT IS 2.07 FT (0.63 M) SOUTHEAST OF THE EAST EDGE OF THE
 AE4010'SIDEWALK, 77.37 FT (23.58 M) NORTH OF THE CENTERLINE OF THE
 AE4010'INTERSECTION OF CUB HILL ROAD AND TIPPERARY ROAD, 17.82 FT (5.43 M)
 AE4010'WEST OF THE CENTERLINE OF TIPPERARY ROAD AND 39.22 FT (11.95 M)
 AE4010'NORTHWEST OF A STORM DRAIN MANHOLE.
 AE4010
 AE4010                          STATION RECOVERY (2014)
 AE4010
 AE4010'RECOVERY NOTE BY US POWER SQUADRON 2014
 AE4010'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4011 ***********************************************************************
 AE4011  DESIGNATION -  GIS 57
 AE4011  PID         -  AE4011
 AE4011  STATE/COUNTY-  MD/BALTIMORE
 AE4011  COUNTRY     -  US
 AE4011  USGS QUAD   -  WHITE MARSH (2016)
 AE4011
 AE4011                         *CURRENT SURVEY CONTROL
 AE4011  ______________________________________________________________________
 AE4011* NAD 83(1986) POSITION- 39 24 25.     (N) 076 29 45.     (W)   SCALED
 AE4011* NAVD 88 ORTHO HEIGHT -    99.376 (meters)      326.04  (feet) ADJUSTED
 AE4011  ______________________________________________________________________
 AE4011  GEOID HEIGHT    -        -32.795 (meters)                     GEOID18
 AE4011  DYNAMIC HEIGHT  -         99.324 (meters)      325.87  (feet) COMP
 AE4011  MODELED GRAVITY -    980,100.1   (mgal)                       NAVD 88
 AE4011
 AE4011  VERT ORDER      -  THIRD
 AE4011
 AE4011.The horizontal coordinates were scaled from a map and have
 AE4011.an estimated accuracy of +/- 6 seconds.
 AE4011
 AE4011.The orthometric height was determined by differential leveling and
 AE4011.adjusted by the NATIONAL GEODETIC SURVEY
 AE4011.in February 1998.
 AE4011
 AE4011.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4011.GEOID18 height accuracy estimate available here.
 AE4011
 AE4011.Click photographs - Photos may exist for this station.
 AE4011
 AE4011.The dynamic height is computed by dividing the NAVD 88
 AE4011.geopotential number by the normal gravity value computed on the
 AE4011.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4011.degrees latitude (g = 980.6199 gals.).
 AE4011
 AE4011.The modeled gravity was interpolated from observed gravity values.
 AE4011
 AE4011;                    North         East    Units  Estimated Accuracy
 AE4011;SPC MD       -   193,300.      443,420.      MT  (+/- 180 meters Scaled)
 AE4011
 AE4011_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ712630(NAD 83)
 AE4011
 AE4011                          SUPERSEDED SURVEY CONTROL
 AE4011
 AE4011.No superseded survey control is available for this station.
 AE4011
 AE4011_MARKER: DD = SURVEY DISK
 AE4011_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE4011_STAMPING: NO. GIS-57 1995
 AE4011_MARK LOGO: MD-005
 AE4011_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE4011_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4011+STABILITY: SURFACE MOTION
 AE4011_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4011+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AE4011
 AE4011  HISTORY     - Date     Condition        Report By
 AE4011  HISTORY     - 1995     MONUMENTED       MCCRON
 AE4011  HISTORY     - 20141105 MARK NOT FOUND   USPSQD
 AE4011
 AE4011                          STATION DESCRIPTION
 AE4011
 AE4011'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4011'STATION IS LOCATED ABOUT 6.5 MI (10.5 KM) EAST OF TOWSON. TO REACH
 AE4011'STATION FROM I-695 (BELTWAY) TAKE EXIT 31 TO HARFORD ROAD (ROUTE 147)
 AE4011'.  GO NORTH ON HARFORD FOR 1.1 MI (1.8 KM) TO THE INTERSECTION OF WITH
 AE4011'NORTHWIND ROAD.  TURN RIGHT ON NORTHWIND ROAD AND GO 1.0 MI (1.6 KM)
 AE4011'TO THE INTERSECTION WITH FERGUSEN AVE AND THE STATION ON THE RIGHT
 AE4011'BETWEEN THE SIDEWALK AND THE CURB. STATION MARK IS SET IN THE TOP OF A
 AE4011'10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS
 AE4011'35.81 FT (10.91 M) NORTHWEST OF A FIRE HYDRANT, 21.62 FT (6.59 M)
 AE4011'SOUTH OF THE CENTERLINE OF NORTHWIND ROAD, 43.55 FT (13.27 M) WEST OF
 AE4011'THE CENTERLINE OF FERGUSEN AVE AND 2.13 NORTH OF THE NORTH EDGE OF THE
 AE4011'CONCRETE SIDEWALK.
 AE4011
 AE4011                          STATION RECOVERY (2014)
 AE4011
 AE4011'RECOVERY NOTE BY US POWER SQUADRON 2014
 AE4011'WAS NOT ABLE TO FIND THE MARKER USING THE GIVEN DISTANCES FROM THE
 AE4011'FIRE HYDRANT AND THE EDGE OF THE SIDEWALK. USING A GPS AND THE GIVEN
 AE4011'
 AE4011'COORDINATES AND A METAL DETECTOR. THE GPS READING AT THE MEASURED
 AE4011'POINT WAS VERY CLOSE TO THE GIVEN COORDINATES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4012 ***********************************************************************
 AE4012  CBN         -  This is a Cooperative Base Network Control Station.
 AE4012  DESIGNATION -  GIS 58
 AE4012  PID         -  AE4012
 AE4012  STATE/COUNTY-  MD/BALTIMORE
 AE4012  COUNTRY     -  US
 AE4012  USGS QUAD   -  TOWSON (2016)
 AE4012
 AE4012                         *CURRENT SURVEY CONTROL
 AE4012  ______________________________________________________________________
 AE4012* NAD 83(2011) POSITION- 39 23 44.63430(N) 076 31 43.06304(W)   ADJUSTED
 AE4012* NAD 83(2011) ELLIP HT-    84.803 (meters)        (06/27/12)   ADJUSTED
 AE4012* NAD 83(2011) EPOCH   -  2010.00
 AE4012* NAVD 88 ORTHO HEIGHT -   117.549 (meters)      385.66  (feet) ADJUSTED
 AE4012  ______________________________________________________________________
 AE4012  GEOID HEIGHT    -        -32.749 (meters)                     GEOID18
 AE4012  NAD 83(2011) X  -  1,149,801.017 (meters)                     COMP
 AE4012  NAD 83(2011) Y  - -4,799,830.071 (meters)                     COMP
 AE4012  NAD 83(2011) Z  -  4,026,418.102 (meters)                     COMP
 AE4012  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 AE4012  DYNAMIC HEIGHT  -        117.486 (meters)      385.45  (feet) COMP
 AE4012  MODELED GRAVITY -    980,093.8   (mgal)                       NAVD 88
 AE4012
 AE4012  VERT ORDER      -  THIRD
 AE4012
 AE4012  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE4012  Standards:
 AE4012         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE4012            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE4012  -------------------------------------------------------------------
 AE4012  NETWORK    0.77   1.39           0.34   0.29   0.71      0.05346437
 AE4012  -------------------------------------------------------------------
 AE4012  Click here for local accuracies and other accuracy information.
 AE4012
 AE4012.The horizontal coordinates were established by GPS observations
 AE4012.and adjusted by the National Geodetic Survey in June 2012.
 AE4012
 AE4012.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE4012.been affixed to the stable North American tectonic plate. See 
 AE4012.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE4012
 AE4012.The horizontal coordinates are valid at the epoch date displayed above
 AE4012.which is a decimal equivalence of Year/Month/Day.
 AE4012
 AE4012.The orthometric height was determined by differential leveling and
 AE4012.adjusted by the NATIONAL GEODETIC SURVEY
 AE4012.in February 1998.
 AE4012
 AE4012.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4012.GEOID18 height accuracy estimate available here.
 AE4012
 AE4012.Click photographs - Photos may exist for this station.
 AE4012
 AE4012.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE4012
 AE4012.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE4012
 AE4012.The ellipsoidal height was determined by GPS observations
 AE4012.and is referenced to NAD 83.
 AE4012
 AE4012.The dynamic height is computed by dividing the NAVD 88
 AE4012.geopotential number by the normal gravity value computed on the
 AE4012.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4012.degrees latitude (g = 980.6199 gals.).
 AE4012
 AE4012.The modeled gravity was interpolated from observed gravity values.
 AE4012
 AE4012. The following values were computed from the NAD 83(2011) position.
 AE4012
 AE4012;                    North         East     Units Scale Factor Converg.
 AE4012;SPC MD       -   192,043.462   440,604.228   MT  0.99999096   +0 17 45.1
 AE4012;SPC MD       -   630,062.59  1,445,549.04   sFT  0.99999096   +0 17 45.1
 AE4012;UTM  18      - 4,361,807.429   368,370.790   MT  0.99981333   -0 58 13.1
 AE4012
 AE4012!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE4012!SPC MD       -   0.99998670  x   0.99999096  =   0.99997766
 AE4012!UTM  18      -   0.99998670  x   0.99981333  =   0.99980003
 AE4012
 AE4012_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6837061807(NAD 83)
 AE4012
 AE4012                          SUPERSEDED SURVEY CONTROL
 AE4012
 AE4012  NAD 83(2007)-  39 23 44.63452(N)    076 31 43.06381(W) AD(2002.00) 0
 AE4012  ELLIP H (02/10/07)   84.826  (m)                       GP(2002.00)    
 AE4012  NAD 83(1991)-  39 23 44.63455(N)    076 31 43.06394(W) AD(       ) A
 AE4012  ELLIP H (02/12/02)   84.830  (m)                       GP(       ) 4 1
 AE4012  NAVD 88             117.55   (m)          385.7    (f) LEVELING    3  
 AE4012
 AE4012.Superseded values are not recommended for survey control.
 AE4012
 AE4012.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE4012.See file dsdata.pdf to determine how the superseded data were derived.
 AE4012
 AE4012_MARKER: DD = SURVEY DISK
 AE4012_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE4012_STAMPING: NO. GIS-58 1995
 AE4012_MARK LOGO: MD-005
 AE4012_PROJECTION: FLUSH
 AE4012_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE4012_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4012+STABILITY: SURFACE MOTION
 AE4012_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4012+SATELLITE: SATELLITE OBSERVATIONS - July 23, 2025
 AE4012
 AE4012  HISTORY     - Date     Condition        Report By
 AE4012  HISTORY     - 1995     MONUMENTED       MCCRON
 AE4012  HISTORY     - 20000515 GOOD             MDSHA
 AE4012  HISTORY     - 20040110 GOOD             USPSQD
 AE4012  HISTORY     - 20141105 GOOD             USPSQD
 AE4012  HISTORY     - 20250723 GOOD             MDSHA
 AE4012
 AE4012                          STATION DESCRIPTION
 AE4012
 AE4012'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4012'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) EAST OF TOWSON IN CARNEY. TO
 AE4012'REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 31 TO HARFORD ROAD (ROUTE
 AE4012'147) .  GO NORTH ON HARFORD ROAD FOR 0.6 MI (1.0 KM) TO THE
 AE4012'INTERSECTION WITH JOPPA ROAD.  TURN LEFT AND GO WEST ON JOPPA ROAD FOR
 AE4012'0.25 MI (0.40 KM) TO THE INTERSECTION WITH JOPPA TERRACE AND THE
 AE4012'STATION ON THE RIGHT.  STATION IS IN A GRASSY CURB ISLAND BETWEEN
 AE4012'JOPPA ROAD, JOPPA TERRACE AND FULLERDALE AVE. STATION MARK IS SET IN
 AE4012'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE4012'GROUND.  IT IS 38.18 FT (11.64 M) SOUTH OF THE CENTERLINE OF JOPPA
 AE4012'ROAD, 6.10 FT (1.86 M) SOUTH OF THE SOUTH SIDE OD A CONCRETE WALK,
 AE4012'29.40 FT (8.96 M) EAST OF THE NORTHEAST CORNER OF A CONCRETE CURB
 AE4012'CORNER, AND 56.95 FT (17.36 M) WEST OF THE NORTHEAST CURB CORNER AT
 AE4012'THE END OF JOPPA TERRACE.
 AE4012
 AE4012                          STATION RECOVERY (2000)
 AE4012
 AE4012'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AE4012'RECOVERED AS DESCRIBED.
 AE4012
 AE4012                          STATION RECOVERY (2004)
 AE4012
 AE4012'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 AE4012'RECOVERED IN GOOD CONDITION.
 AE4012
 AE4012                          STATION RECOVERY (2014)
 AE4012
 AE4012'RECOVERY NOTE BY US POWER SQUADRON 2014
 AE4012'RECOVERED IN GOOD CONDITION.
 AE4012
 AE4012                          STATION RECOVERY (2025)
 AE4012
 AE4012'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (WFN)
 AE4012'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4032 ***********************************************************************
 AE4032  DESIGNATION -  GIS 59
 AE4032  PID         -  AE4032
 AE4032  STATE/COUNTY-  MD/BALTIMORE
 AE4032  COUNTRY     -  US
 AE4032  USGS QUAD   -  WHITE MARSH (2016)
 AE4032
 AE4032                         *CURRENT SURVEY CONTROL
 AE4032  ______________________________________________________________________
 AE4032* NAD 83(1986) POSITION- 39 24 48.44   (N) 076 29 12.63   (W)   HD_HELD1
 AE4032* NAVD 88 ORTHO HEIGHT -    96.486 (meters)      316.55  (feet) ADJUSTED
 AE4032  ______________________________________________________________________
 AE4032  GEOID HEIGHT    -        -32.800 (meters)                     GEOID18
 AE4032  DYNAMIC HEIGHT  -         96.436 (meters)      316.39  (feet) COMP
 AE4032  MODELED GRAVITY -    980,100.8   (mgal)                       NAVD 88
 AE4032
 AE4032  VERT ORDER      -  THIRD
 AE4032
 AE4032.The horizontal coordinates were determined by differentially corrected
 AE4032.hand held GPS observations or other comparable positioning techniques
 AE4032.and have an estimated accuracy of +/- 3 meters.
 AE4032
 AE4032.The orthometric height was determined by differential leveling and
 AE4032.adjusted by the NATIONAL GEODETIC SURVEY
 AE4032.in February 1998.
 AE4032
 AE4032.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4032.GEOID18 height accuracy estimate available here.
 AE4032
 AE4032.Click photographs - Photos may exist for this station.
 AE4032
 AE4032.The dynamic height is computed by dividing the NAVD 88
 AE4032.geopotential number by the normal gravity value computed on the
 AE4032.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4032.degrees latitude (g = 980.6199 gals.).
 AE4032
 AE4032.The modeled gravity was interpolated from observed gravity values.
 AE4032
 AE4032;                    North         East    Units  Estimated Accuracy
 AE4032;SPC MD       -   194,030.6     444,192.7     MT  (+/- 3 meters HH1 GPS) 
 AE4032
 AE4032_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7200163714(NAD 83)
 AE4032
 AE4032                          SUPERSEDED SURVEY CONTROL
 AE4032
 AE4032.No superseded survey control is available for this station.
 AE4032
 AE4032_MARKER: DD = SURVEY DISK
 AE4032_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE4032_STAMPING: NO. GIS-59 1995
 AE4032_MARK LOGO: MD-005
 AE4032_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE4032_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4032+STABILITY: SURFACE MOTION
 AE4032_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4032+SATELLITE: SATELLITE OBSERVATIONS - November 05, 2014
 AE4032
 AE4032  HISTORY     - Date     Condition        Report By
 AE4032  HISTORY     - 1995     MONUMENTED       MCCRON
 AE4032  HISTORY     - 20141105 GOOD             USPSQD
 AE4032
 AE4032                          STATION DESCRIPTION
 AE4032
 AE4032'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4032'STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) EAST OF TOWSON. TO REACH
 AE4032'STATION FROM I-695 (BELTWAY) TAKE EXIT 31 TO HARFORD ROAD (ROUTE 147)
 AE4032'.  GO NORTH ON HARFORD ROAD FOR 1.1 MI (1.8 KM) TO THE INTERSECTION
 AE4032'WITH NORTHWIND ROAD.  TURN RIGHT ON NORTHWIND ROAD AND GO 1.0 MI (1.6
 AE4032'KM) TO FERGUSEN AVE.  TURN LEFT ON FERGUSEN AVE AND GO 0.6 MI (1.0 KM)
 AE4032'TO STATION ON THE RIGHT BETWEEN THE CURB AND THE SIDEWALK, SET IN THE
 AE4032'TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 AE4032'IT IS 27.05 FT (8.24 M) SOUTHEAST OF THE CENTERLINE OF FERGUSEN AVE,
 AE4032'24.3 FT (7.4 M) SOUTHWEST OF A WATER VALVE MANHOLE, 16.10 FT (4.91 M)
 AE4032'EAST OF A WATER METER, 16.94 FT (5.16 M) WEST OF A FIRE HYDRANT AND
 AE4032'18.43 FT (5.62 M) NORTHWEST OF TELEPHONE PEDESTAL NO.13.
 AE4032
 AE4032                          STATION RECOVERY (2014)
 AE4032
 AE4032'RECOVERY NOTE BY US POWER SQUADRON 2014
 AE4032'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7732 ***********************************************************************
 AC7732  DESIGNATION -  GIS 5A
 AC7732  PID         -  AC7732
 AC7732  STATE/COUNTY-  MD/C OF BALTIMORE
 AC7732  COUNTRY     -  US
 AC7732  USGS QUAD   -  CURTIS BAY (2016)
 AC7732
 AC7732                         *CURRENT SURVEY CONTROL
 AC7732  ______________________________________________________________________
 AC7732* NAD 83(2011) POSITION- 39 14 49.63691(N) 076 31 47.89431(W)   ADJUSTED
 AC7732* NAD 83(2011) ELLIP HT-   -30.596 (meters)        (06/27/12)   ADJUSTED
 AC7732* NAD 83(2011) EPOCH   -  2010.00
 AC7732* NAVD 88 ORTHO HEIGHT -     2.374 (meters)        7.79  (feet) ADJUSTED
 AC7732  ______________________________________________________________________
 AC7732  GEOID HEIGHT    -        -32.962 (meters)                     GEOID18
 AC7732  NAD 83(2011) X  -  1,152,103.138 (meters)                     COMP
 AC7732  NAD 83(2011) Y  - -4,809,937.533 (meters)                     COMP
 AC7732  NAD 83(2011) Z  -  4,013,581.272 (meters)                     COMP
 AC7732  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 AC7732  DYNAMIC HEIGHT  -          2.372 (meters)        7.78  (feet) COMP
 AC7732  MODELED GRAVITY -    980,097.2   (mgal)                       NAVD 88
 AC7732
 AC7732  VERT ORDER      -  THIRD
 AC7732
 AC7732  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7732  Standards:
 AC7732         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7732            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7732  -------------------------------------------------------------------
 AC7732  NETWORK    0.60   1.49           0.24   0.25   0.76     -0.01584721
 AC7732  -------------------------------------------------------------------
 AC7732  Click here for local accuracies and other accuracy information.
 AC7732
 AC7732.The horizontal coordinates were established by GPS observations
 AC7732.and adjusted by the National Geodetic Survey in June 2012.
 AC7732
 AC7732.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7732.been affixed to the stable North American tectonic plate. See 
 AC7732.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7732
 AC7732.The horizontal coordinates are valid at the epoch date displayed above
 AC7732.which is a decimal equivalence of Year/Month/Day.
 AC7732
 AC7732.The orthometric height was determined by differential leveling and
 AC7732.adjusted by the NATIONAL GEODETIC SURVEY
 AC7732.in February 1998.
 AC7732
 AC7732.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7732.GEOID18 height accuracy estimate available here.
 AC7732
 AC7732.Click photographs - Photos may exist for this station.
 AC7732
 AC7732.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7732
 AC7732.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7732
 AC7732.The ellipsoidal height was determined by GPS observations
 AC7732.and is referenced to NAD 83.
 AC7732
 AC7732.The dynamic height is computed by dividing the NAVD 88
 AC7732.geopotential number by the normal gravity value computed on the
 AC7732.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7732.degrees latitude (g = 980.6199 gals.).
 AC7732
 AC7732.The modeled gravity was interpolated from observed gravity values.
 AC7732
 AC7732. The following values were computed from the NAD 83(2011) position.
 AC7732
 AC7732;                    North         East     Units Scale Factor Converg.
 AC7732;SPC MD       -   175,544.443   440,573.575   MT  0.99997080   +0 17 42.0
 AC7732;SPC MD       -   575,932.06  1,445,448.47   sFT  0.99997080   +0 17 42.0
 AC7732;UTM  18      - 4,345,315.849   367,976.071   MT  0.99981462   -0 58 05.2
 AC7732
 AC7732!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7732!SPC MD       -   1.00000480  x   0.99997080  =   0.99997560
 AC7732!UTM  18      -   1.00000480  x   0.99981462  =   0.99981942
 AC7732
 AC7732:                Primary Azimuth Mark                     Grid Az
 AC7732:SPC MD       -  GIS 5B                                   196 03 23.1
 AC7732:UTM  18      -  GIS 5B                                   197 19 10.3
 AC7732
 AC7732_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6797645315(NAD 83)
 AC7732
 AC7732|---------------------------------------------------------------------|
 AC7732| PID    Reference Object                     Distance      Geod. Az  |
 AC7732|                                                           dddmmss.s |
 AC7732| AC7733 GIS 5B                              APPROX. 0.9 KM 1962105.1 |
 AC7732| AC7688 GIS 5                               APPROX. 1.1 KM 3493153.1 |
 AC7732|---------------------------------------------------------------------|
 AC7732
 AC7732                          SUPERSEDED SURVEY CONTROL
 AC7732
 AC7732  NAD 83(2007)-  39 14 49.63718(N)    076 31 47.89511(W) AD(2002.00) 0
 AC7732  ELLIP H (02/10/07)  -30.580  (m)                       GP(2002.00)    
 AC7732  ELLIP H (08/30/02)  -30.565  (m)                       GP(       ) 4 2
 AC7732  NAD 83(1991)-  39 14 49.63708(N)    076 31 47.89458(W) AD(       ) 1
 AC7732  ELLIP H (04/08/97)  -30.648  (m)                       GP(       ) 3 1
 AC7732  NAVD 88 (04/08/97)    2.4    (m)  GEOID93  model used  GPS OBS        
 AC7732
 AC7732.Superseded values are not recommended for survey control.
 AC7732
 AC7732.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7732.See file dsdata.pdf to determine how the superseded data were derived.
 AC7732
 AC7732_MARKER: S = SPIKE
 AC7732_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 AC7732_SP_SET: ASPHALT
 AC7732_MARK LOGO: MD-005
 AC7732_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AC7732_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AC7732_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7732+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AC7732
 AC7732  HISTORY     - Date     Condition        Report By
 AC7732  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7732  HISTORY     - 20240527 MARK NOT FOUND   JMTMD
 AC7732
 AC7732                          STATION DESCRIPTION
 AC7732
 AC7732'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7732'STATION IS LOCATED ABOUT 5.5 MI (8.9 KM) SOUTHEAST OF THE CENTER OF
 AC7732'BALTIMORE AT THE DUNDALK MARINE TERMINAL. TO REACH STATION FROM THE
 AC7732'NORTHBOUND LANE OF I-695 (BELTWAY OUTERLOOP)TAKE EXIT 44 AFTER THE
 AC7732'FRANCIS SCOTT KEY BRIDGE TOLL PLAZA TO BROENING HIGHWAY. GO NORTHWEST
 AC7732'ON BROENING HIGHWAY FOR 2.4 MI (3.9 KM) TO THE NORTH SERVICE ROAD
 AC7732'ENTRANCE OF THE MARINE TERMINAL. TURN LEFT ON THE NORTH SERVICE ROAD
 AC7732'AND GO 0.6 MI (1.0 KM) TO THE INTERSECTION WITH FIFTH STREET. TURN
 AC7732'LEFT ON FIFTH STREET AND GO 0.3 MI (0.48 KM) TO THE INTERSECTION WITH
 AC7732'C STREET AND THE STATION IN THE CENTERLINE OF THE ROAD. STATION MARK
 AC7732'IS A RAILROAD SPIKE SET IN THE CENTERLINE OF THE PAVED ROAD. IT IS
 AC7732'67.78 FT (20.66 M) SOUTHWEST OF A TRAFFIC CONTROL SIGNAL SUPPORT POLE
 AC7732'ON THE NORTHSIDE OF FIFTH ST AND 66.32 FT (20.21 M) SOUTHEAST OF
 AC7732'ANOTHER TRAFFIC CONTROL SIGNAL SUPPORT POLE ON THE NORTH SIDE OF FIFTH
 AC7732'ST.
 AC7732
 AC7732                          STATION RECOVERY (2024)
 AC7732
 AC7732'RECOVERY NOTE BY JMT ENGINEERING 2024 (BSU)
 AC7732'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7733 ***********************************************************************
 AC7733  DESIGNATION -  GIS 5B
 AC7733  PID         -  AC7733
 AC7733  STATE/COUNTY-  MD/C OF BALTIMORE
 AC7733  COUNTRY     -  US
 AC7733  USGS QUAD   -  CURTIS BAY (2016)
 AC7733
 AC7733                         *CURRENT SURVEY CONTROL
 AC7733  ______________________________________________________________________
 AC7733* NAD 83(2011) POSITION- 39 14 21.16702(N) 076 31 58.63560(W)   ADJUSTED
 AC7733* NAD 83(2011) ELLIP HT-   -30.737 (meters)        (06/27/12)   ADJUSTED
 AC7733* NAD 83(2011) EPOCH   -  2010.00
 AC7733* NAVD 88 ORTHO HEIGHT -     2.229 (meters)        7.31  (feet) ADJUSTED
 AC7733  ______________________________________________________________________
 AC7733  GEOID HEIGHT    -        -32.965 (meters)                     GEOID18
 AC7733  NAD 83(2011) X  -  1,151,981.982 (meters)                     COMP
 AC7733  NAD 83(2011) Y  - -4,810,537.564 (meters)                     COMP
 AC7733  NAD 83(2011) Z  -  4,012,901.218 (meters)                     COMP
 AC7733  LAPLACE CORR    -         -2.65  (seconds)                    DEFLEC18
 AC7733  DYNAMIC HEIGHT  -          2.228 (meters)        7.31  (feet) COMP
 AC7733  MODELED GRAVITY -    980,095.7   (mgal)                       NAVD 88
 AC7733
 AC7733  VERT ORDER      -  THIRD
 AC7733
 AC7733  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7733  Standards:
 AC7733         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7733            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7733  -------------------------------------------------------------------
 AC7733  NETWORK    0.47   0.74           0.21   0.17   0.38      0.09769090
 AC7733  -------------------------------------------------------------------
 AC7733  Click here for local accuracies and other accuracy information.
 AC7733
 AC7733.The horizontal coordinates were established by GPS observations
 AC7733.and adjusted by the National Geodetic Survey in June 2012.
 AC7733
 AC7733.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7733.been affixed to the stable North American tectonic plate. See 
 AC7733.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7733
 AC7733.The horizontal coordinates are valid at the epoch date displayed above
 AC7733.which is a decimal equivalence of Year/Month/Day.
 AC7733
 AC7733.The orthometric height was determined by differential leveling and
 AC7733.adjusted by the NATIONAL GEODETIC SURVEY
 AC7733.in February 1998.
 AC7733
 AC7733.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7733.GEOID18 height accuracy estimate available here.
 AC7733
 AC7733.Click photographs - Photos may exist for this station.
 AC7733
 AC7733.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7733
 AC7733.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7733
 AC7733.The ellipsoidal height was determined by GPS observations
 AC7733.and is referenced to NAD 83.
 AC7733
 AC7733.The dynamic height is computed by dividing the NAVD 88
 AC7733.geopotential number by the normal gravity value computed on the
 AC7733.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7733.degrees latitude (g = 980.6199 gals.).
 AC7733
 AC7733.The modeled gravity was interpolated from observed gravity values.
 AC7733
 AC7733. The following values were computed from the NAD 83(2011) position.
 AC7733
 AC7733;                    North         East     Units Scale Factor Converg.
 AC7733;SPC MD       -   174,665.178   440,320.513   MT  0.99996992   +0 17 35.3
 AC7733;SPC MD       -   573,047.34  1,444,618.22   sFT  0.99996992   +0 17 35.3
 AC7733;UTM  18      - 4,344,442.512   367,703.732   MT  0.99981550   -0 58 11.4
 AC7733
 AC7733!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7733!SPC MD       -   1.00000482  x   0.99996992  =   0.99997474
 AC7733!UTM  18      -   1.00000482  x   0.99981550  =   0.99982032
 AC7733
 AC7733:                Primary Azimuth Mark                     Grid Az
 AC7733:SPC MD       -  GIS 5A                                   016 03 23.0
 AC7733:UTM  18      -  GIS 5A                                   017 19 09.7
 AC7733
 AC7733_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6770344442(NAD 83)
 AC7733
 AC7733|---------------------------------------------------------------------|
 AC7733| PID    Reference Object                     Distance      Geod. Az  |
 AC7733|                                                           dddmmss.s |
 AC7733| AC7732 GIS 5A                              APPROX. 0.9 KM 0162058.3 |
 AC7733|---------------------------------------------------------------------|
 AC7733
 AC7733                          SUPERSEDED SURVEY CONTROL
 AC7733
 AC7733  NAD 83(2007)-  39 14 21.16728(N)    076 31 58.63641(W) AD(2002.00) 0
 AC7733  ELLIP H (02/10/07)  -30.721  (m)                       GP(2002.00)    
 AC7733  ELLIP H (08/30/02)  -30.706  (m)                       GP(       ) 4 2
 AC7733  NAD 83(1991)-  39 14 21.16719(N)    076 31 58.63590(W) AD(       ) 1
 AC7733  ELLIP H (04/08/97)  -30.789  (m)                       GP(       ) 3 1
 AC7733  NAVD 88 (04/08/97)    2.2    (m)  GEOID93  model used  GPS OBS        
 AC7733
 AC7733.Superseded values are not recommended for survey control.
 AC7733
 AC7733.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7733.See file dsdata.pdf to determine how the superseded data were derived.
 AC7733
 AC7733_MARKER: B = BOLT
 AC7733_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 AC7733_SP_SET: BOLT AND PUNCH IN CONCRETE PIER
 AC7733_MARK LOGO: MD-005
 AC7733_MAGNETIC: N = NO MAGNETIC MATERIAL
 AC7733_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 AC7733+STABILITY: POSITION/ELEVATION WELL
 AC7733_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7733+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AC7733
 AC7733  HISTORY     - Date     Condition        Report By
 AC7733  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7733  HISTORY     - 19970811 GOOD             DMW
 AC7733
 AC7733                          STATION DESCRIPTION
 AC7733
 AC7733'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7733'STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) SOUTHEAST OF THE CENTER OF
 AC7733'BALTIMORE AT THE DUNDALK MARINE TERMINAL. TO REACH STATION FROM THE
 AC7733'NORTHBOUND LANE OF I-695 (BELTWAY OUTERLOOP)TAKE EXIT 44 AFTER THE
 AC7733'FRANCIS SCOTT KEY BRIDGE TOLL PLAZA TO BROENING HIGHWAY. GO NORTHWEST
 AC7733'ON BROENING HIGHWAY FOR 2.4 MI (3.9 KM) TO THE NORTH SERVICE ROAD
 AC7733'ENTRANCE OF THE MARINE TERMINAL. TURN LEFT ON THE NORTH SERVICE ROAD
 AC7733'AND FOLLOW THE SERVICE ROAD TO THE SOUTHERNMOST CORNER OF THE CONCRETE
 AC7733'DOCK. STATION IS LOCATED ABOUT 4 FT (1.2 M) NORTH OF THE CORNER OF THE
 AC7733'BULKHEAD. STATION MARK IS A BOLT SET IN A CONCRETE DOCK. IT IS 3.9 FT
 AC7733'(1.2 M) NORTH OF A LIGHT AT THE CORNER OF THE DOCK, 3.9 FT (1.2 M)
 AC7733'SOUTH OF THE CORNER OF A STORM DRAIN INLET, 5.4 FT (1.6 M) WEST OF THE
 AC7733'EDGE OF THE DOCK (BULKHEAD) AND 5.4 FT (1.6 M) EAST OF THE EDGE OF THE
 AC7733'DOCK (BULKHEAD).
 AC7733
 AC7733                          STATION RECOVERY (1997)
 AC7733
 AC7733'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AC7733'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7689 ***********************************************************************
 AC7689  DESIGNATION -  GIS 6
 AC7689  PID         -  AC7689
 AC7689  STATE/COUNTY-  MD/BALTIMORE
 AC7689  COUNTRY     -  US
 AC7689  USGS QUAD   -  MIDDLE RIVER (2016)
 AC7689
 AC7689                         *CURRENT SURVEY CONTROL
 AC7689  ______________________________________________________________________
 AC7689* NAD 83(2011) POSITION- 39 16 38.91509(N) 076 23 04.21066(W)   ADJUSTED
 AC7689* NAD 83(2011) ELLIP HT-   -31.398 (meters)        (06/27/12)   ADJUSTED
 AC7689* NAD 83(2011) EPOCH   -  2010.00
 AC7689* NAVD 88 ORTHO HEIGHT -     1.672 (meters)        5.49  (feet) ADJUSTED
 AC7689  ______________________________________________________________________
 AC7689  GEOID HEIGHT    -        -33.068 (meters)                     GEOID18
 AC7689  NAD 83(2011) X  -  1,163,809.099 (meters)                     COMP
 AC7689  NAD 83(2011) Y  - -4,804,923.517 (meters)                     COMP
 AC7689  NAD 83(2011) Z  -  4,016,190.023 (meters)                     COMP
 AC7689  LAPLACE CORR    -         -1.98  (seconds)                    DEFLEC18
 AC7689  DYNAMIC HEIGHT  -          1.671 (meters)        5.48  (feet) COMP
 AC7689  MODELED GRAVITY -    980,115.3   (mgal)                       NAVD 88
 AC7689
 AC7689  VERT ORDER      -  THIRD
 AC7689
 AC7689  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7689  Standards:
 AC7689         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7689            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7689  -------------------------------------------------------------------
 AC7689  NETWORK    0.79   2.14           0.35   0.29   1.09     -0.10490217
 AC7689  -------------------------------------------------------------------
 AC7689  Click here for local accuracies and other accuracy information.
 AC7689
 AC7689.The horizontal coordinates were established by GPS observations
 AC7689.and adjusted by the National Geodetic Survey in June 2012.
 AC7689
 AC7689.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7689.been affixed to the stable North American tectonic plate. See 
 AC7689.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7689
 AC7689.The horizontal coordinates are valid at the epoch date displayed above
 AC7689.which is a decimal equivalence of Year/Month/Day.
 AC7689
 AC7689.The orthometric height was determined by differential leveling and
 AC7689.adjusted by the NATIONAL GEODETIC SURVEY
 AC7689.in February 1998.
 AC7689
 AC7689.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7689.GEOID18 height accuracy estimate available here.
 AC7689
 AC7689.Click photographs - Photos may exist for this station.
 AC7689
 AC7689.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7689
 AC7689.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7689
 AC7689.The ellipsoidal height was determined by GPS observations
 AC7689.and is referenced to NAD 83.
 AC7689
 AC7689.The dynamic height is computed by dividing the NAVD 88
 AC7689.geopotential number by the normal gravity value computed on the
 AC7689.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7689.degrees latitude (g = 980.6199 gals.).
 AC7689
 AC7689.The modeled gravity was interpolated from observed gravity values.
 AC7689
 AC7689. The following values were computed from the NAD 83(2011) position.
 AC7689
 AC7689;                    North         East     Units Scale Factor Converg.
 AC7689;SPC MD       -   178,988.965   453,107.655   MT  0.99997437   +0 23 10.7
 AC7689;SPC MD       -   587,232.96  1,486,570.70   sFT  0.99997437   +0 23 10.7
 AC7689;UTM  18      - 4,348,482.695   380,580.789   MT  0.99977559   -0 52 35.8
 AC7689
 AC7689!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7689!SPC MD       -   1.00000493  x   0.99997437  =   0.99997930
 AC7689!UTM  18      -   1.00000493  x   0.99977559  =   0.99978051
 AC7689
 AC7689_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8058048482(NAD 83)
 AC7689
 AC7689                          SUPERSEDED SURVEY CONTROL
 AC7689
 AC7689  NAD 83(2007)-  39 16 38.91536(N)    076 23 04.21144(W) AD(2002.00) 0
 AC7689  ELLIP H (02/10/07)  -31.381  (m)                       GP(2002.00)    
 AC7689  ELLIP H (08/30/02)  -31.366  (m)                       GP(       ) 4 2
 AC7689  NAD 83(1991)-  39 16 38.91503(N)    076 23 04.21098(W) AD(       ) 1
 AC7689  ELLIP H (04/08/97)  -31.432  (m)                       GP(       ) 3 1
 AC7689  NAVD 88 (04/08/97)    1.7    (m)  GEOID93  model used  GPS OBS        
 AC7689
 AC7689.Superseded values are not recommended for survey control.
 AC7689
 AC7689.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7689.See file dsdata.pdf to determine how the superseded data were derived.
 AC7689
 AC7689_MARKER: DD = SURVEY DISK
 AC7689_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7689_STAMPING: GIS-6 1995
 AC7689_MARK LOGO: MD-005
 AC7689_PROJECTION: FLUSH
 AC7689_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7689_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7689+STABILITY: SURFACE MOTION
 AC7689_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7689+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2021
 AC7689
 AC7689  HISTORY     - Date     Condition        Report By
 AC7689  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7689  HISTORY     - 20080228 GOOD             DEWDAV
 AC7689  HISTORY     - 20121006 GOOD             USPSQD
 AC7689  HISTORY     - 20211129 GOOD             MDSHA
 AC7689
 AC7689                          STATION DESCRIPTION
 AC7689
 AC7689'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7689'STATION IS LOCATED ABOUT 10.5 MI (16.9 KM) EAST OF THE CENTER OF
 AC7689'BALTIMORE AND ABOUT 4.5 MI (7.2 KM) SOUTHEAST OF ESSEX AT BREEZY POINT
 AC7689'BEACH. TO REACH THE STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO RT
 AC7689'702 (SOUTHEAST BLVD). GO SOUTH ON RT 702 AND BACKRIVER NECK ROAD (RT
 AC7689'702 CHANGES TO BACK RIVER NECK ROAD) FOR 3.1 MI (5.0 KM) TO HOLLY NECK
 AC7689'ROAD. TURN LEFT ON HOLLY NECK ROAD AND GO 2.8 MI (4.5 KM) TO THE END
 AC7689'OF THE PUBLIC ROAD AND THE BEGINNING OF BREEZY POINT COURT (PRIVATE).
 AC7689'CONTINUE ON BREEZY POINT COURT FOR ABOUT 200 FT (61.0 M) TO STATION ON
 AC7689'THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AC7689'MONUMENT SET FLUSH WITH THE GROUND. IT IS 63 FT (19.2 M) SOUTHWEST OF
 AC7689'THE INTERSECTION OF THE CENTERLINES OF BREEZY POINT COURT AND THE
 AC7689'DRIVEWAY LEADING TO HOUSE NO. 2899, 11.70 FT (3.57 M) WEST OF THE EDGE
 AC7689'OF PAVE, 26.35 FT (8.03 M) NORTH OF A 0.33 FT (0.10 M) DIAMETER
 AC7689'WEEPING WILLOW TREE AND 24.90 FT (7.59 M) NORTHEAST OF THE EASTERNMOST
 AC7689'END OF A ROW OF CEDAR TREES.
 AC7689
 AC7689                          STATION RECOVERY (2008)
 AC7689
 AC7689'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7689'RECOVERED IN GOOD CONDITION.
 AC7689
 AC7689                          STATION RECOVERY (2012)
 AC7689
 AC7689'RECOVERY NOTE BY US POWER SQUADRON 2012
 AC7689'RECOVERED IN GOOD CONDITION.
 AC7689
 AC7689                          STATION RECOVERY (2021)
 AC7689
 AC7689'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 AC7689'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6417 ***********************************************************************
 DG6417  DESIGNATION -  GIS 6
 DG6417  PID         -  DG6417
 DG6417  STATE/COUNTY-  MD/TALBOT
 DG6417  COUNTRY     -  US
 DG6417  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6417
 DG6417                         *CURRENT SURVEY CONTROL
 DG6417  ______________________________________________________________________
 DG6417* NAD 83(1986) POSITION- 38 46 40.37   (N) 076 12 25.51   (W)   HD_HELD1
 DG6417* NAVD 88 ORTHO HEIGHT -     1.715 (meters)        5.63  (feet) ADJUSTED
 DG6417  ______________________________________________________________________
 DG6417  GEOID HEIGHT    -        -34.389 (meters)                     GEOID18
 DG6417  DYNAMIC HEIGHT  -          1.714 (meters)        5.62  (feet) COMP
 DG6417  MODELED GRAVITY -    980,043.4   (mgal)                       NAVD 88
 DG6417
 DG6417  VERT ORDER      -  SECOND    CLASS I
 DG6417
 DG6417.The horizontal coordinates were determined by differentially corrected
 DG6417.hand held GPS observations or other comparable positioning techniques
 DG6417.and have an estimated accuracy of +/- 3 meters.
 DG6417
 DG6417.The orthometric height was determined by differential leveling and
 DG6417.adjusted by the NATIONAL GEODETIC SURVEY
 DG6417.in September 2004.
 DG6417
 DG6417.No vertical observational check was made to the station.
 DG6417
 DG6417.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6417.GEOID18 height accuracy estimate available here.
 DG6417
 DG6417.Click photographs - Photos may exist for this station.
 DG6417
 DG6417.The dynamic height is computed by dividing the NAVD 88
 DG6417.geopotential number by the normal gravity value computed on the
 DG6417.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6417.degrees latitude (g = 980.6199 gals.).
 DG6417
 DG6417.The modeled gravity was interpolated from observed gravity values.
 DG6417
 DG6417;                    North         East    Units  Estimated Accuracy
 DG6417;SPC MD       -   123,648.4     468,897.3     MT  (+/- 3 meters HH1 GPS) 
 DG6417
 DG6417_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9514892820(NAD 83)
 DG6417
 DG6417                          SUPERSEDED SURVEY CONTROL
 DG6417
 DG6417.No superseded survey control is available for this station.
 DG6417
 DG6417_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6417_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6417_STAMPING: NO GIS 6 1995
 DG6417_MARK LOGO: MD1370
 DG6417_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6417_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6417+STABILITY: SURFACE MOTION
 DG6417_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6417+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6417
 DG6417  HISTORY     - Date     Condition        Report By
 DG6417  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6417  HISTORY     - 19991213 GOOD             MDSHA
 DG6417
 DG6417                          STATION DESCRIPTION
 DG6417
 DG6417'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6417'THE MARK IS LOCATED ABOUT 2.9 MI (4.67 KM) NORTH-NORTHWEST OF ROYAL
 DG6417'OAK, 2.4 MI (3.86 KM) NORTHWEST OF NEWCOMB AND 1.1 MI (1.77 KM)
 DG6417'EAST-SOUTHEAST OF ST MICHAELS.  TO REACH THE MARK FROM THE POST OFFICE
 DG6417'IN THE TOWN OF SAINT MICHAELS, PROCEED SOUTHEAST ALONG MARYLAND STATE
 DG6417'HIGHWAY 33 FOR 1.0 MILES (1.6 KM) TO LINCOLN AVENUE. TURN LEFT AND
 DG6417'PROCEED NORTHEAST ALONG LINCOLN AVENUE FOR 0.4 MILES (0.6 KM) TO A
 DG6417'T-INTERSECTION WITH RIVERVIEW TERRACE AND THE MARK ON THE LEFT.  IT IS
 DG6417'20.7 FEET (6.3 M) NORTHEAST OF THE CENTER OF RIVERVIEW TERRACE, 71.2
 DG6417'FEET (21.7 M) NORTH OF A FIRE HYDRANT, 62.0 FEET (18.9 M) EAST OF
 DG6417'TELEPHONE POLE NUMBER 31, 33.3 FEET (10.1 M) SOUTHEAST OF THE CENTER
 DG6417'OF A MACADAM DRIVEWAY TO HOUSE NUMBER 1025, 56.1 FEET (17.1 M)
 DG6417'NORTHWEST OF A TELEPHONE JUNCTION BOX AND 73.0 FEET (22.3 M) NORTH OF
 DG6417'THE JUNCTION OF LINCOLN AVENUE AND RIVERVIEW TERRACE.  IT IS A TOSM
 DG6417'DISK SET IN THE TOP OF A 7-INCH (18 CM) ROUND CONCRETE POST FLUSH WITH
 DG6417'THE GROUND AND ABOUT 1 FOOT (0.3 M) LOWER THAN THE SURFACE OF THE
 DG6417'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4013 ***********************************************************************
 AE4013  DESIGNATION -  GIS 60
 AE4013  PID         -  AE4013
 AE4013  STATE/COUNTY-  MD/BALTIMORE
 AE4013  COUNTRY     -  US
 AE4013  USGS QUAD   -  WHITE MARSH (2016)
 AE4013
 AE4013                         *CURRENT SURVEY CONTROL
 AE4013  ______________________________________________________________________
 AE4013* NAD 83(1986) POSITION- 39 24 54.90   (N) 076 26 26.91   (W)   HD_HELD1
 AE4013* NAVD 88 ORTHO HEIGHT -    80.305 (meters)      263.47  (feet) ADJUSTED
 AE4013  ______________________________________________________________________
 AE4013  GEOID HEIGHT    -        -32.877 (meters)                     GEOID18
 AE4013  DYNAMIC HEIGHT  -         80.263 (meters)      263.33  (feet) COMP
 AE4013  MODELED GRAVITY -    980,106.4   (mgal)                       NAVD 88
 AE4013
 AE4013  VERT ORDER      -  THIRD
 AE4013
 AE4013.The horizontal coordinates were determined by differentially corrected
 AE4013.hand held GPS observations or other comparable positioning techniques
 AE4013.and have an estimated accuracy of +/- 3 meters.
 AE4013
 AE4013.The orthometric height was determined by differential leveling and
 AE4013.adjusted by the NATIONAL GEODETIC SURVEY
 AE4013.in February 1998.
 AE4013
 AE4013.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4013.GEOID18 height accuracy estimate available here.
 AE4013
 AE4013.Click photographs - Photos may exist for this station.
 AE4013
 AE4013.The dynamic height is computed by dividing the NAVD 88
 AE4013.geopotential number by the normal gravity value computed on the
 AE4013.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4013.degrees latitude (g = 980.6199 gals.).
 AE4013
 AE4013.The modeled gravity was interpolated from observed gravity values.
 AE4013
 AE4013;                    North         East    Units  Estimated Accuracy
 AE4013;SPC MD       -   194,253.1     448,155.8     MT  (+/- 3 meters HH1 GPS) 
 AE4013
 AE4013_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7596763849(NAD 83)
 AE4013
 AE4013                          SUPERSEDED SURVEY CONTROL
 AE4013
 AE4013.No superseded survey control is available for this station.
 AE4013
 AE4013_MARKER: DD = SURVEY DISK
 AE4013_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE4013_STAMPING: NO. GIS-60 1995
 AE4013_MARK LOGO: MD-005
 AE4013_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE4013_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4013+STABILITY: SURFACE MOTION
 AE4013_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4013+SATELLITE: SATELLITE OBSERVATIONS - February 28, 2008
 AE4013
 AE4013  HISTORY     - Date     Condition        Report By
 AE4013  HISTORY     - 1995     MONUMENTED       MCCRON
 AE4013  HISTORY     - 20040110 GOOD             USPSQD
 AE4013  HISTORY     - 20080228 GOOD             DEWDAV
 AE4013
 AE4013                          STATION DESCRIPTION
 AE4013
 AE4013'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4013'STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) EAST OF TOWSON AND ABOUT 5.0
 AE4013'MI (8.0 KM) SOUTHWEST OF JOPPA. TO REACH STATION FROM I-695 (BELTWAY)
 AE4013'TAKE EXIT 32 TO BELAIR ROAD (ROUTE 1).  GO NORTH ON BELAIR ROAD FOR
 AE4013'4.3 MI (6.9 KM) TO FORGE ROAD.  TURN RIGHT ON FORGE ROAD AND GO EAST
 AE4013'FOR 1.0 MI (1.6 KM) TO THE INTERSECTION WITH CORRELLI LANE AND STATION
 AE4013'ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AE4013'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 34.80 FT (10.61 M)
 AE4013'EAST OF UTILITY POLE NO.  42, 20.30 FT (6.19 M) EAST OF A FIRE
 AE4013'HYDRANT, 21.92 FT (6.68 M) NORTHEAST OF THE CENTERLINE OF FORGE ROAD,
 AE4013'79.56 FT (24.25 M) NORTHWEST OF POWER POLE NO.  284610 AND 26.10 FT
 AE4013'(7.96 M) SOUTHWEST OF A WHITE ALUMINUM FENCE.
 AE4013
 AE4013                          STATION RECOVERY (2004)
 AE4013
 AE4013'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 AE4013'RECOVERED IN GOOD CONDITION.
 AE4013
 AE4013                          STATION RECOVERY (2008)
 AE4013
 AE4013'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AE4013'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4014 ***********************************************************************
 AE4014  DESIGNATION -  GIS 61
 AE4014  PID         -  AE4014
 AE4014  STATE/COUNTY-  MD/BALTIMORE
 AE4014  COUNTRY     -  US
 AE4014  USGS QUAD   -  WHITE MARSH (2016)
 AE4014
 AE4014                         *CURRENT SURVEY CONTROL
 AE4014  ______________________________________________________________________
 AE4014* NAD 83(1986) POSITION- 39 24 52.22   (N) 076 25 07.15   (W)   HD_HELD1
 AE4014* NAVD 88 ORTHO HEIGHT -    47.910 (meters)      157.18  (feet) ADJUSTED
 AE4014  ______________________________________________________________________
 AE4014  GEOID HEIGHT    -        -32.923 (meters)                     GEOID18
 AE4014  DYNAMIC HEIGHT  -         47.885 (meters)      157.10  (feet) COMP
 AE4014  MODELED GRAVITY -    980,109.1   (mgal)                       NAVD 88
 AE4014
 AE4014  VERT ORDER      -  THIRD
 AE4014
 AE4014.The horizontal coordinates were determined by differentially corrected
 AE4014.hand held GPS observations or other comparable positioning techniques
 AE4014.and have an estimated accuracy of +/- 3 meters.
 AE4014
 AE4014.The orthometric height was determined by differential leveling and
 AE4014.adjusted by the NATIONAL GEODETIC SURVEY
 AE4014.in February 1998.
 AE4014
 AE4014.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4014.GEOID18 height accuracy estimate available here.
 AE4014
 AE4014.Click photographs - Photos may exist for this station.
 AE4014
 AE4014.The dynamic height is computed by dividing the NAVD 88
 AE4014.geopotential number by the normal gravity value computed on the
 AE4014.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4014.degrees latitude (g = 980.6199 gals.).
 AE4014
 AE4014.The modeled gravity was interpolated from observed gravity values.
 AE4014
 AE4014;                    North         East    Units  Estimated Accuracy
 AE4014;SPC MD       -   194,182.4     450,064.2     MT  (+/- 3 meters HH1 GPS) 
 AE4014
 AE4014_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7787363736(NAD 83)
 AE4014
 AE4014                          SUPERSEDED SURVEY CONTROL
 AE4014
 AE4014.No superseded survey control is available for this station.
 AE4014
 AE4014_MARKER: DD = SURVEY DISK
 AE4014_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE4014_STAMPING: NO. GIS-61 1995
 AE4014_MARK LOGO: MD-005
 AE4014_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE4014_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4014+STABILITY: SURFACE MOTION
 AE4014_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AE4014+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2005
 AE4014
 AE4014  HISTORY     - Date     Condition        Report By
 AE4014  HISTORY     - 1995     MONUMENTED       MCCRON
 AE4014  HISTORY     - 20050529 GOOD             USPSQD
 AE4014
 AE4014                          STATION DESCRIPTION
 AE4014
 AE4014'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4014'STATION IS LOCATED ABOUT 10.0 MI (16.1 KM) EAST OF TOWSON AND ABOUT
 AE4014'3.5 MI (5.6 KM) SOUTHWEST OF JOPPA. TO REACH STATION FROM I-695
 AE4014'(BELTWAY) TAKE EXIT 32 TO BELAIR ROAD (ROUTE 1).  GO NORTH ON BELAIR
 AE4014'ROAD FOR 4.3 MI (6.9 KM) TO THE INTERSECTION WITH FORGE ROAD.  TURN
 AE4014'RIGHT AND GO EAST ON FORGE ROAD FOR 2.2 MI (3.5 KM) TO THE
 AE4014'INTERSECTION WITH WINKLER STREET AND THE STATION ON RIGHT,  IN THE TOP
 AE4014'OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT
 AE4014'IS 20.22 FT (6.16 M) SOUTHEAST OF THE CENTERLINE OF FORGE ROAD, 27.59
 AE4014'FT (8.41 M) SOUTHWEST OF THE CENTERLINE OF WINKLER ROAD, 22.04 FT
 AE4014'(6.72 M) NORTHEAST OF A FIRE HYDRANT, 3.62 FT (1.10 M) SOUTHWEST OF
 AE4014'POWER POLE NO.  186529 AND 17.96 FT (5.47 M) SOUTHWEST OF A WATER
 AE4014'VALVE MANHOLE.
 AE4014
 AE4014                          STATION RECOVERY (2005)
 AE4014
 AE4014'RECOVERY NOTE BY US POWER SQUADRON 2005 (JJH)
 AE4014'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4015 ***********************************************************************
 AE4015  DESIGNATION -  GIS 62
 AE4015  PID         -  AE4015
 AE4015  STATE/COUNTY-  MD/BALTIMORE
 AE4015  COUNTRY     -  US
 AE4015  USGS QUAD   -  WHITE MARSH (2016)
 AE4015
 AE4015                         *CURRENT SURVEY CONTROL
 AE4015  ______________________________________________________________________
 AE4015* NAD 83(1986) POSITION- 39 24 10.22   (N) 076 26 25.74   (W)   HD_HELD1
 AE4015* NAVD 88 ORTHO HEIGHT -    56.376 (meters)      184.96  (feet) ADJUSTED
 AE4015  ______________________________________________________________________
 AE4015  GEOID HEIGHT    -        -32.903 (meters)                     GEOID18
 AE4015  DYNAMIC HEIGHT  -         56.346 (meters)      184.86  (feet) COMP
 AE4015  MODELED GRAVITY -    980,106.3   (mgal)                       NAVD 88
 AE4015
 AE4015  VERT ORDER      -  THIRD
 AE4015
 AE4015.The horizontal coordinates were determined by differentially corrected
 AE4015.hand held GPS observations or other comparable positioning techniques
 AE4015.and have an estimated accuracy of +/- 3 meters.
 AE4015
 AE4015.The orthometric height was determined by differential leveling and
 AE4015.adjusted by the NATIONAL GEODETIC SURVEY
 AE4015.in February 1998.
 AE4015
 AE4015.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4015.GEOID18 height accuracy estimate available here.
 AE4015
 AE4015.Click photographs - Photos may exist for this station.
 AE4015
 AE4015.The dynamic height is computed by dividing the NAVD 88
 AE4015.geopotential number by the normal gravity value computed on the
 AE4015.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4015.degrees latitude (g = 980.6199 gals.).
 AE4015
 AE4015.The modeled gravity was interpolated from observed gravity values.
 AE4015
 AE4015;                    North         East    Units  Estimated Accuracy
 AE4015;SPC MD       -   192,875.4     448,192.2     MT  (+/- 3 meters HH1 GPS) 
 AE4015
 AE4015_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7597362471(NAD 83)
 AE4015
 AE4015                          SUPERSEDED SURVEY CONTROL
 AE4015
 AE4015.No superseded survey control is available for this station.
 AE4015
 AE4015_MARKER: DD = SURVEY DISK
 AE4015_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE4015_STAMPING: NO. GIS-62 1995
 AE4015_MARK LOGO: MD-005
 AE4015_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE4015_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4015+STABILITY: SURFACE MOTION
 AE4015_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE4015+SATELLITE: SATELLITE OBSERVATIONS - May 31, 2004
 AE4015
 AE4015  HISTORY     - Date     Condition        Report By
 AE4015  HISTORY     - 1995     MONUMENTED       MCCRON
 AE4015  HISTORY     - 20040531 GOOD             USPSQD
 AE4015
 AE4015                          STATION DESCRIPTION
 AE4015
 AE4015'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4015'STATION IS LOCATED ABOUT 9.0 MI (14.5 KM) EAST OF TOWSON AND ABOUT 5.0
 AE4015'MI (8.0 KM) SOUTHWEST OF JOPPA. TO REACH STATION FROM I-695 (BELTWAY)
 AE4015'TAKE EXIT 32 TO BELAIR ROAD (ROUTE 1) .  GO NORTH ON BELAIR ROAD FOR
 AE4015'2.2 MI (3.5 KM) TO THE INTERSECTION WITH JOPPA ROAD.  TURN RIGHT ON
 AE4015'JOPPA ROAD AND GO EAST FOR 2.1 MI (3.4 KM) TO THE INTERSECTION WITH
 AE4015'GERST ROAD AND THE STATION ON THE LEFT, IN THE TOP OF A 10 IN DIAMETER
 AE4015'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 47.73 FT (14.55 M)
 AE4015'EAST OF THE EAST END OF A GUARDRAIL, 25.75 NORTHEAST OF THE CENTERLINE
 AE4015'OF JOPPA ROAD, 29.32 FT (8.94 M) NORTH OF THE INTERSECTION OF JOPPA
 AE4015'ROAD AND GERST ROAD, 44.63 FT (13.60 M) NORTHWEST OF GUY POLE NO.
 AE4015'56512 AND 19.85 FT (6.05 M) NORTHWEST OF THE CENTERLINE OF GERST ROAD.
 AE4015
 AE4015                          STATION RECOVERY (2004)
 AE4015
 AE4015'RECOVERY NOTE BY US POWER SQUADRON 2004 (CM)
 AE4015'FOUND IN GOOD CONDITION, NEAR WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3974 ***********************************************************************
 AE3974  DESIGNATION -  GIS 63
 AE3974  PID         -  AE3974
 AE3974  STATE/COUNTY-  MD/BALTIMORE
 AE3974  COUNTRY     -  US
 AE3974  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3974
 AE3974                         *CURRENT SURVEY CONTROL
 AE3974  ______________________________________________________________________
 AE3974* NAD 83(1986) POSITION- 39 16 58.72   (N) 076 23 43.20   (W)   HD_HELD1
 AE3974* NAVD 88 ORTHO HEIGHT -     5.568 (meters)       18.27  (feet) ADJUSTED
 AE3974  ______________________________________________________________________
 AE3974  GEOID HEIGHT    -        -33.058 (meters)                     GEOID18
 AE3974  DYNAMIC HEIGHT  -          5.565 (meters)       18.26  (feet) COMP
 AE3974  MODELED GRAVITY -    980,114.5   (mgal)                       NAVD 88
 AE3974
 AE3974  VERT ORDER      -  THIRD
 AE3974
 AE3974.The horizontal coordinates were determined by differentially corrected
 AE3974.hand held GPS observations or other comparable positioning techniques
 AE3974.and have an estimated accuracy of +/- 3 meters.
 AE3974
 AE3974.The orthometric height was determined by differential leveling and
 AE3974.adjusted by the NATIONAL GEODETIC SURVEY
 AE3974.in February 1998.
 AE3974
 AE3974.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3974.GEOID18 height accuracy estimate available here.
 AE3974
 AE3974.Click photographs - Photos may exist for this station.
 AE3974
 AE3974.The dynamic height is computed by dividing the NAVD 88
 AE3974.geopotential number by the normal gravity value computed on the
 AE3974.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3974.degrees latitude (g = 980.6199 gals.).
 AE3974
 AE3974.The modeled gravity was interpolated from observed gravity values.
 AE3974
 AE3974;                    North         East    Units  Estimated Accuracy
 AE3974;SPC MD       -   179,593.5     452,169.1     MT  (+/- 3 meters HH1 GPS) 
 AE3974
 AE3974_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7965649107(NAD 83)
 AE3974
 AE3974                          SUPERSEDED SURVEY CONTROL
 AE3974
 AE3974.No superseded survey control is available for this station.
 AE3974
 AE3974_MARKER: DD = SURVEY DISK
 AE3974_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3974_STAMPING: NO. GIS-63 1995
 AE3974_MARK LOGO: MD-005
 AE3974_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3974_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3974+STABILITY: SURFACE MOTION
 AE3974_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3974+SATELLITE: SATELLITE OBSERVATIONS - October 06, 2012
 AE3974
 AE3974  HISTORY     - Date     Condition        Report By
 AE3974  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3974  HISTORY     - 20011222 GOOD             USPSQD
 AE3974  HISTORY     - 20121006 GOOD             USPSQD
 AE3974
 AE3974                          STATION DESCRIPTION
 AE3974
 AE3974'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3974'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTHEAST OF ESSEX. TO REACH
 AE3974'STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO SOUTHEAST BLVD (ROUTE
 AE3974'702) .  FROM THE SOUTHEAST BLVD OVERPASS OVER EASTERN BLVD GO SOUTH ON
 AE3974'SOUTHEAST BLVD AND BACK RIVER NECK ROAD FOR 3.1 MI (5.0 KM) TO THE
 AE3974'INTERSECTION WITH HOLLY NECK ROAD.  TURN LEFT ON HOLLY NECK ROAD AND
 AE3974'GO 1.95 MI (3.14 KM) TO THE INTERSECTION WITH BALTIMORE YACHT CLUB
 AE3974'ROAD AND STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10
 AE3974'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 31.65
 AE3974'FT (9.65 M) SOUTH OF A SANITARY SEWER MANHOLE, 16.60 SOUTH OF THE
 AE3974'INTERSECTION OF THE ROADS, 22.35 FT (6.81 M) NORTHEAST OF POWER POLE
 AE3974'NO.  168351 AND 37.80 FT (11.52 M) SOUTHEAST OF POLE NO.  73.
 AE3974
 AE3974                          STATION RECOVERY (2001)
 AE3974
 AE3974'RECOVERY NOTE BY US POWER SQUADRON 2001 (RCZ)
 AE3974'RECOVERED IN GOOD CONDITION.
 AE3974
 AE3974                          STATION RECOVERY (2012)
 AE3974
 AE3974'RECOVERY NOTE BY US POWER SQUADRON 2012
 AE3974'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3975 ***********************************************************************
 AE3975  DESIGNATION -  GIS 64
 AE3975  PID         -  AE3975
 AE3975  STATE/COUNTY-  MD/BALTIMORE
 AE3975  COUNTRY     -  US
 AE3975  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3975
 AE3975                         *CURRENT SURVEY CONTROL
 AE3975  ______________________________________________________________________
 AE3975* NAD 83(1986) POSITION- 39 16 36.28   (N) 076 24 53.47   (W)   HD_HELD1
 AE3975* NAVD 88 ORTHO HEIGHT -     7.344 (meters)       24.09  (feet) ADJUSTED
 AE3975  ______________________________________________________________________
 AE3975  GEOID HEIGHT    -        -33.037 (meters)                     GEOID18
 AE3975  DYNAMIC HEIGHT  -          7.340 (meters)       24.08  (feet) COMP
 AE3975  MODELED GRAVITY -    980,114.2   (mgal)                       NAVD 88
 AE3975
 AE3975  VERT ORDER      -  THIRD
 AE3975
 AE3975.The horizontal coordinates were determined by differentially corrected
 AE3975.hand held GPS observations or other comparable positioning techniques
 AE3975.and have an estimated accuracy of +/- 3 meters.
 AE3975
 AE3975.The orthometric height was determined by differential leveling and
 AE3975.adjusted by the NATIONAL GEODETIC SURVEY
 AE3975.in February 1998.
 AE3975
 AE3975.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3975.GEOID18 height accuracy estimate available here.
 AE3975
 AE3975.Click photographs - Photos may exist for this station.
 AE3975
 AE3975.The dynamic height is computed by dividing the NAVD 88
 AE3975.geopotential number by the normal gravity value computed on the
 AE3975.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3975.degrees latitude (g = 980.6199 gals.).
 AE3975
 AE3975.The modeled gravity was interpolated from observed gravity values.
 AE3975
 AE3975;                    North         East    Units  Estimated Accuracy
 AE3975;SPC MD       -   178,890.5     450,489.5     MT  (+/- 3 meters HH1 GPS) 
 AE3975
 AE3975_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7796148441(NAD 83)
 AE3975
 AE3975                          SUPERSEDED SURVEY CONTROL
 AE3975
 AE3975.No superseded survey control is available for this station.
 AE3975
 AE3975_MARKER: DD = SURVEY DISK
 AE3975_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3975_STAMPING: NO. GIS-64 1995
 AE3975_MARK LOGO: MD-005
 AE3975_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3975_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3975+STABILITY: SURFACE MOTION
 AE3975_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3975+SATELLITE: SATELLITE OBSERVATIONS - October 06, 2012
 AE3975
 AE3975  HISTORY     - Date     Condition        Report By
 AE3975  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3975  HISTORY     - 20011222 GOOD             USPSQD
 AE3975  HISTORY     - 20121006 GOOD             USPSQD
 AE3975
 AE3975                          STATION DESCRIPTION
 AE3975
 AE3975'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3975'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) SOUTHEAST OF ESSEX. TO REACH
 AE3975'STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO SOUTHEAST BLVD (ROUTE
 AE3975'702) .  FROM THE SOUTHEAST BLVD OVERPASS OVER EASTERN BLVD GO SOUTH ON
 AE3975'SOUTHEAST BLVD AND BACK RIVER NECK ROAD FOR 3.1 MI (5.0 KM) TO THE
 AE3975'INTERSECTION WITH HOLLY NECK ROAD.  TURN LEFT ON HOLLY NECK ROAD AND
 AE3975'GO 0.8 MI (1.3 KM) TO THE INTERSECTION WITH SHAFFERS ROAD AND STATION
 AE3975'ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AE3975'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 60.50 FT (18.44 M)
 AE3975'SOUTH OF A FIRE HYDRANT, 32.80 FT (10.00 M) SOUTH OF THE CENTERLINE OF
 AE3975'HOLLY NECK ROAD, 37.2 FT (11.3 M) NORTHEAST OF THE CENTERLINE OF
 AE3975'SHAFFERS ROAD AND 105.60 FT (32.19 M) NORTHWEST OF AN UNNUMBERED POWER
 AE3975'POLE.
 AE3975
 AE3975                          STATION RECOVERY (2001)
 AE3975
 AE3975'RECOVERY NOTE BY US POWER SQUADRON 2001 (RCZ)
 AE3975'RECOVERED IN GOOD CONDITION.
 AE3975
 AE3975                          STATION RECOVERY (2012)
 AE3975
 AE3975'RECOVERY NOTE BY US POWER SQUADRON 2012
 AE3975'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3976 ***********************************************************************
 AE3976  DESIGNATION -  GIS 65
 AE3976  PID         -  AE3976
 AE3976  STATE/COUNTY-  MD/BALTIMORE
 AE3976  COUNTRY     -  US
 AE3976  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3976
 AE3976                         *CURRENT SURVEY CONTROL
 AE3976  ______________________________________________________________________
 AE3976* NAD 83(1986) POSITION- 39 15 34.34   (N) 076 25 46.94   (W)   HD_HELD1
 AE3976* NAVD 88 ORTHO HEIGHT -     3.344 (meters)       10.97  (feet) ADJUSTED
 AE3976  ______________________________________________________________________
 AE3976  GEOID HEIGHT    -        -33.025 (meters)                     GEOID18
 AE3976  DYNAMIC HEIGHT  -          3.342 (meters)       10.96  (feet) COMP
 AE3976  MODELED GRAVITY -    980,114.0   (mgal)                       NAVD 88
 AE3976
 AE3976  VERT ORDER      -  THIRD
 AE3976
 AE3976.The horizontal coordinates were determined by differentially corrected
 AE3976.hand held GPS observations or other comparable positioning techniques
 AE3976.and have an estimated accuracy of +/- 3 meters.
 AE3976
 AE3976.The orthometric height was determined by differential leveling and
 AE3976.adjusted by the NATIONAL GEODETIC SURVEY
 AE3976.in February 1998.
 AE3976
 AE3976.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3976.GEOID18 height accuracy estimate available here.
 AE3976
 AE3976.Click photographs - Photos may exist for this station.
 AE3976
 AE3976.The dynamic height is computed by dividing the NAVD 88
 AE3976.geopotential number by the normal gravity value computed on the
 AE3976.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3976.degrees latitude (g = 980.6199 gals.).
 AE3976
 AE3976.The modeled gravity was interpolated from observed gravity values.
 AE3976
 AE3976;                    North         East    Units  Estimated Accuracy
 AE3976;SPC MD       -   176,972.3     449,219.9     MT  (+/- 3 meters HH1 GPS) 
 AE3976
 AE3976_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7665046552(NAD 83)
 AE3976
 AE3976                          SUPERSEDED SURVEY CONTROL
 AE3976
 AE3976.No superseded survey control is available for this station.
 AE3976
 AE3976_MARKER: DD = SURVEY DISK
 AE3976_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3976_STAMPING: NO. GIS-65 1995
 AE3976_MARK LOGO: MD-005
 AE3976_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3976_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3976+STABILITY: SURFACE MOTION
 AE3976_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3976+SATELLITE: SATELLITE OBSERVATIONS - February 28, 2008
 AE3976
 AE3976  HISTORY     - Date     Condition        Report By
 AE3976  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3976  HISTORY     - 20010915 GOOD             USPSQD
 AE3976  HISTORY     - 20080228 GOOD             DEWDAV
 AE3976
 AE3976                          STATION DESCRIPTION
 AE3976
 AE3976'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3976'STATION IS LOCATED 4.0 MI (6.4 KM) SOUTHEAST OF ESSEX. TO REACH
 AE3976'STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO ROUTE 702 (SOUTHEAST
 AE3976'BLVD) .  FROM THE ROUTE 702 OVERPASS OVER EASTERN BLVD GO SOUTH ON
 AE3976'ROUTE 702 AND BACK RIVER NECK ROAD FOR 4.25 MI (6.84 KM) TO THE
 AE3976'INTERSECTION WITH EVERGREEN LANE.  TURN RIGHT ON EVERGREEN LANE AND GO
 AE3976'0.65 MI (1.05 KM) TO THE STATION ON THE RIGHT AT THE END OF A PAVED
 AE3976'RUNWAY AT THE ESSEX SKYPARK. STATION IS SET IN THE TOP OF A 10 IN
 AE3976'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 215.2 FT
 AE3976'(65.6 M) SOUTHEAST OF THE EDGE OF THE PAVED RUNWAY AND IN LINE WITH
 AE3976'THE CENTERLINE OF THE RUNWAY, 86 FT (26.2 M) NORTHEAST OF THE EDGE OF
 AE3976'A WOODS AND 14.2 FT (4.3 M) NORTHWEST OF THE CENTERLINE OF THE ROAD.
 AE3976
 AE3976                          STATION RECOVERY (2001)
 AE3976
 AE3976'RECOVERY NOTE BY US POWER SQUADRON 2001 (RZ)
 AE3976'PHOTO WITH FORM 77-4
 AE3976
 AE3976                          STATION RECOVERY (2008)
 AE3976
 AE3976'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AE3976'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3977 ***********************************************************************
 AE3977  DESIGNATION -  GIS 66
 AE3977  PID         -  AE3977
 AE3977  STATE/COUNTY-  MD/BALTIMORE
 AE3977  COUNTRY     -  US
 AE3977  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3977
 AE3977                         *CURRENT SURVEY CONTROL
 AE3977  ______________________________________________________________________
 AE3977* NAD 83(1986) POSITION- 39 17 39.97   (N) 076 25 06.98   (W)   HD_HELD1
 AE3977* NAVD 88 ORTHO HEIGHT -     7.123 (meters)       23.37  (feet) ADJUSTED
 AE3977  ______________________________________________________________________
 AE3977  GEOID HEIGHT    -        -33.038 (meters)                     GEOID18
 AE3977  DYNAMIC HEIGHT  -          7.119 (meters)       23.36  (feet) COMP
 AE3977  MODELED GRAVITY -    980,111.6   (mgal)                       NAVD 88
 AE3977
 AE3977  VERT ORDER      -  THIRD
 AE3977
 AE3977.The horizontal coordinates were determined by differentially corrected
 AE3977.hand held GPS observations or other comparable positioning techniques
 AE3977.and have an estimated accuracy of +/- 3 meters.
 AE3977
 AE3977.The orthometric height was determined by differential leveling and
 AE3977.adjusted by the NATIONAL GEODETIC SURVEY
 AE3977.in February 1998.
 AE3977
 AE3977.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3977.GEOID18 height accuracy estimate available here.
 AE3977
 AE3977.Click photographs - Photos may exist for this station.
 AE3977
 AE3977.The dynamic height is computed by dividing the NAVD 88
 AE3977.geopotential number by the normal gravity value computed on the
 AE3977.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3977.degrees latitude (g = 980.6199 gals.).
 AE3977
 AE3977.The modeled gravity was interpolated from observed gravity values.
 AE3977
 AE3977;                    North         East    Units  Estimated Accuracy
 AE3977;SPC MD       -   180,852.5     450,153.2     MT  (+/- 3 meters HH1 GPS) 
 AE3977
 AE3977_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7766850410(NAD 83)
 AE3977
 AE3977                          SUPERSEDED SURVEY CONTROL
 AE3977
 AE3977.No superseded survey control is available for this station.
 AE3977
 AE3977_MARKER: DD = SURVEY DISK
 AE3977_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3977_STAMPING: NO. GIS-66 1995
 AE3977_MARK LOGO: MD-005
 AE3977_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3977_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3977+STABILITY: SURFACE MOTION
 AE3977_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3977+SATELLITE: SATELLITE OBSERVATIONS - February 28, 2008
 AE3977
 AE3977  HISTORY     - Date     Condition        Report By
 AE3977  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3977  HISTORY     - 20080228 GOOD             DEWDAV
 AE3977
 AE3977                          STATION DESCRIPTION
 AE3977
 AE3977'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3977'STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) SOUTHEAST OF ESSEX. TO REACH
 AE3977'STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO ROUTE 702 (SOUTHEAST
 AE3977'BLVD) .  FROM THE ROUTE 702 OVERPASS OVER EASTERN BLVD GO SOUTH ON
 AE3977'ROUTE 702 FOR 2.15 MILES (3.46 KM) TO THE INTERSECTION WITH TURKEY
 AE3977'POINT ROAD.  TURN LEFT ON TURKEY POINT ROAD AND GO 0.1 MI (0.2 KM) TO
 AE3977'THE INTERSECTION WITH BACK RIVER NECK ROAD.  CONTINUE ON TURKEY POINT
 AE3977'ROAD FOR 0.6 MI (1.0 KM) TO THE STATION ON THE RIGHT ON THE GROUNDS OF
 AE3977'CHESAPEAKE HIGH SCHOOL. STATION MARK IS SET IN THE TOP OF A 10 IN
 AE3977'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 29.42 FT
 AE3977'(8.97 M) SOUTHEAST OF THE CENTERLINE OF TURKEY POINT ROAD, 10.81 FT
 AE3977'(3.29 M) SOUTHEAST OF THE FACE OF CURB, 2.88 FT (0.88 M) SOUTHEAST OF
 AE3977'THE SOUTH SIDE OF A CONCRETE WALK, 68.7 FT (20.9 M) NORTHEAST OF A
 AE3977'SANITARY SEWER MANHOLE, 38.7 FT (11.8 M) SOUTHWEST OF THE END OF A
 AE3977'CHAINLINK FENCE AND 43.15 FT (13.15 M) SOUTHWEST OF POWER POLE
 AE3977'NO.542895.
 AE3977
 AE3977                          STATION RECOVERY (2008)
 AE3977
 AE3977'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AE3977'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3978 ***********************************************************************
 AE3978  DESIGNATION -  GIS 67
 AE3978  PID         -  AE3978
 AE3978  STATE/COUNTY-  MD/BALTIMORE
 AE3978  COUNTRY     -  US
 AE3978  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3978
 AE3978                         *CURRENT SURVEY CONTROL
 AE3978  ______________________________________________________________________
 AE3978* NAD 83(1986) POSITION- 39 19 35.54   (N) 076 27 44.22   (W)   HD_HELD1
 AE3978* NAVD 88 ORTHO HEIGHT -    20.474 (meters)       67.17  (feet) ADJUSTED
 AE3978  ______________________________________________________________________
 AE3978  GEOID HEIGHT    -        -32.973 (meters)                     GEOID18
 AE3978  DYNAMIC HEIGHT  -         20.463 (meters)       67.14  (feet) COMP
 AE3978  MODELED GRAVITY -    980,104.5   (mgal)                       NAVD 88
 AE3978
 AE3978  VERT ORDER      -  THIRD
 AE3978
 AE3978.The horizontal coordinates were determined by differentially corrected
 AE3978.hand held GPS observations or other comparable positioning techniques
 AE3978.and have an estimated accuracy of +/- 3 meters.
 AE3978
 AE3978.The orthometric height was determined by differential leveling and
 AE3978.adjusted by the NATIONAL GEODETIC SURVEY
 AE3978.in February 1998.
 AE3978
 AE3978.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3978.GEOID18 height accuracy estimate available here.
 AE3978
 AE3978.Click photographs - Photos may exist for this station.
 AE3978
 AE3978.The dynamic height is computed by dividing the NAVD 88
 AE3978.geopotential number by the normal gravity value computed on the
 AE3978.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3978.degrees latitude (g = 980.6199 gals.).
 AE3978
 AE3978.The modeled gravity was interpolated from observed gravity values.
 AE3978
 AE3978;                    North         East    Units  Estimated Accuracy
 AE3978;SPC MD       -   184,393.3     446,364.4     MT  (+/- 3 meters HH1 GPS) 
 AE3978
 AE3978_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7395954033(NAD 83)
 AE3978
 AE3978                          SUPERSEDED SURVEY CONTROL
 AE3978
 AE3978.No superseded survey control is available for this station.
 AE3978
 AE3978_MARKER: DD = SURVEY DISK
 AE3978_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3978_STAMPING: NO. GIS-67 1995
 AE3978_MARK LOGO: MD-005
 AE3978_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3978_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3978+STABILITY: SURFACE MOTION
 AE3978_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3978+SATELLITE: SATELLITE OBSERVATIONS - February 28, 2008
 AE3978
 AE3978  HISTORY     - Date     Condition        Report By
 AE3978  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3978  HISTORY     - 20080228 GOOD             DEWDAV
 AE3978
 AE3978                          STATION DESCRIPTION
 AE3978
 AE3978'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3978'STATION IS LOCATED ABOUT 1.5 MI (2.4 KM) NORTHEAST OF ESSEX IN
 AE3978'MIDDLESEX. TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 35 TO ROUTE
 AE3978'40 EAST (PULASKI HIGHWAY) .  FROM THE I-695 OVERPASS OVER ROUTE 40 GO
 AE3978'EAST ON ROUTE 40 FOR 0.45 MI (0.72 KM) TO ROSSVILLE BLVD.  TURN RIGHT
 AE3978'ON ROSSVILLE BLVD AND GO 0.9 MI (1.4 KM) TO STEMMERS RUN ROAD.  TURN
 AE3978'LEFT ON STEMMERS RUN ROAD AND GO 0.4 MI (0.6 KM) TO THE INTERSECTION
 AE3978'WITH MIDDLESEX ROAD AND THE STATION ON THE RIGHT ON THE GROUNDS OF
 AE3978'KENWOOD HIGH SCHOOL. STATION MARK IS SET IN THE TOP OF A 10 IN
 AE3978'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 67.70 FT
 AE3978'(20.64 M) NORTHEAST OF THE NORTHEAST CORNER OF A BRICK  KENWOOD HIGH
 AE3978'SCHOOL  SIGN, 21.62 FT (6.59 M) SOUTH OF THE INTERSECTION OF THE
 AE3978'ROADS, 3.6 FT (1.1 M) SOUTH OF THE FACE OF CURB AND 2.12 FT (0.65 M)
 AE3978'NORTH OF THE NORTH SIDE OF A CONCRETE WALK.
 AE3978
 AE3978                          STATION RECOVERY (2008)
 AE3978
 AE3978'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AE3978'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4016 ***********************************************************************
 AE4016  DESIGNATION -  GIS 68
 AE4016  PID         -  AE4016
 AE4016  STATE/COUNTY-  MD/BALTIMORE
 AE4016  COUNTRY     -  US
 AE4016  USGS QUAD   -  BALTIMORE EAST (2016)
 AE4016
 AE4016                         *CURRENT SURVEY CONTROL
 AE4016  ______________________________________________________________________
 AE4016* NAD 83(1986) POSITION- 39 21 21.     (N) 076 31 01.     (W)   SCALED
 AE4016* NAVD 88 ORTHO HEIGHT -    42.908 (meters)      140.77  (feet) ADJUSTED
 AE4016  ______________________________________________________________________
 AE4016  GEOID HEIGHT    -        -32.840 (meters)                     GEOID18
 AE4016  DYNAMIC HEIGHT  -         42.885 (meters)      140.70  (feet) COMP
 AE4016  MODELED GRAVITY -    980,097.0   (mgal)                       NAVD 88
 AE4016
 AE4016  VERT ORDER      -  THIRD
 AE4016
 AE4016.The horizontal coordinates were scaled from a map and have
 AE4016.an estimated accuracy of +/- 6 seconds.
 AE4016
 AE4016.The orthometric height was determined by differential leveling and
 AE4016.adjusted by the NATIONAL GEODETIC SURVEY
 AE4016.in February 1998.
 AE4016
 AE4016.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4016.GEOID18 height accuracy estimate available here.
 AE4016
 AE4016.Click photographs - Photos may exist for this station.
 AE4016
 AE4016.The dynamic height is computed by dividing the NAVD 88
 AE4016.geopotential number by the normal gravity value computed on the
 AE4016.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4016.degrees latitude (g = 980.6199 gals.).
 AE4016
 AE4016.The modeled gravity was interpolated from observed gravity values.
 AE4016
 AE4016;                    North         East    Units  Estimated Accuracy
 AE4016;SPC MD       -   187,620.      441,630.      MT  (+/- 180 meters Scaled)
 AE4016
 AE4016_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ693573(NAD 83)
 AE4016
 AE4016                          SUPERSEDED SURVEY CONTROL
 AE4016
 AE4016.No superseded survey control is available for this station.
 AE4016
 AE4016_MARKER: DD = SURVEY DISK
 AE4016_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE4016_STAMPING: NO. GIS-68 1995
 AE4016_MARK LOGO: MD-005
 AE4016_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE4016_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4016+STABILITY: SURFACE MOTION
 AE4016_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AE4016+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AE4016
 AE4016  HISTORY     - Date     Condition        Report By
 AE4016  HISTORY     - 1995     MONUMENTED       MCCRON
 AE4016
 AE4016                          STATION DESCRIPTION
 AE4016
 AE4016'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4016'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) SOUTHEAST OF TOWSON AND ABOUT
 AE4016'4.0 MI (6.4 KM) NORTHWEST OF ESSEX IN OVERLEA. TO REACH STATION FROM
 AE4016'I-695 (BELTWAY) TAKE EXIT 32 TO BELAIR ROAD SOUTH (ROUTE 1) .  FROM
 AE4016'THE ROUTE 1 OVERPASS OVER I-695 GO SOUTH ON ROUTE 1 FOR 0.75 MI (1.21
 AE4016'KM) TO THE INTERSECTION WITH FULLERTON AVE.  TURN LEFT ON FULLERTON
 AE4016'AVE AND GO 0.5 MI (0.8 KM) ON FULLERTON AVE TO THE INTERSECTION WITH
 AE4016'KENWOOD AVE AND STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP
 AE4016'OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT
 AE4016'IS 25.55 FT (7.79 M) SOUTHWEST OF POWER POLE NO.  109562, 5.97 FT
 AE4016'(1.82 M) SOUTH OF A STORM DRAIN MANHOLE, 3.0 FT (0.9 M) NORTHWEST OF
 AE4016'THE FACE OF CURB, 2.1 FT (0.6 M) SOUTHEAST OF THE SOUTH SIDE OF A
 AE4016'CONCRETE WALK AND 74.00 FT (22.56 M) NORTHEAST OF AN UNNUMBERED POWER
 AE4016'POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3979 ***********************************************************************
 AE3979  DESIGNATION -  GIS 69
 AE3979  PID         -  AE3979
 AE3979  STATE/COUNTY-  MD/BALTIMORE
 AE3979  COUNTRY     -  US
 AE3979  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3979
 AE3979                         *CURRENT SURVEY CONTROL
 AE3979  ______________________________________________________________________
 AE3979* NAD 83(1986) POSITION- 39 21 45.84   (N) 076 23 30.51   (W)   HD_HELD1
 AE3979* NAVD 88 ORTHO HEIGHT -    16.379 (meters)       53.74  (feet) ADJUSTED
 AE3979  ______________________________________________________________________
 AE3979  GEOID HEIGHT    -        -33.045 (meters)                     GEOID18
 AE3979  DYNAMIC HEIGHT  -         16.371 (meters)       53.71  (feet) COMP
 AE3979  MODELED GRAVITY -    980,105.5   (mgal)                       NAVD 88
 AE3979
 AE3979  VERT ORDER      -  THIRD
 AE3979
 AE3979.The horizontal coordinates were determined by differentially corrected
 AE3979.hand held GPS observations or other comparable positioning techniques
 AE3979.and have an estimated accuracy of +/- 3 meters.
 AE3979
 AE3979.The orthometric height was determined by differential leveling and
 AE3979.adjusted by the NATIONAL GEODETIC SURVEY
 AE3979.in February 1998.
 AE3979
 AE3979.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3979.GEOID18 height accuracy estimate available here.
 AE3979
 AE3979.Click photographs - Photos may exist for this station.
 AE3979
 AE3979.The dynamic height is computed by dividing the NAVD 88
 AE3979.geopotential number by the normal gravity value computed on the
 AE3979.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3979.degrees latitude (g = 980.6199 gals.).
 AE3979
 AE3979.The modeled gravity was interpolated from observed gravity values.
 AE3979
 AE3979;                    North         East    Units  Estimated Accuracy
 AE3979;SPC MD       -   188,449.7     452,414.3     MT  (+/- 3 meters HH1 GPS) 
 AE3979
 AE3979_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8009657954(NAD 83)
 AE3979
 AE3979                          SUPERSEDED SURVEY CONTROL
 AE3979
 AE3979.No superseded survey control is available for this station.
 AE3979
 AE3979_MARKER: DD = SURVEY DISK
 AE3979_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3979_STAMPING: NO. GIS-69 1995
 AE3979_MARK LOGO: MD-005
 AE3979_PROJECTION: FLUSH
 AE3979_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3979_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3979+STABILITY: SURFACE MOTION
 AE3979_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3979+SATELLITE: SATELLITE OBSERVATIONS - September 17, 2020
 AE3979
 AE3979  HISTORY     - Date     Condition        Report By
 AE3979  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3979  HISTORY     - 20200917 GOOD             MD-005
 AE3979
 AE3979                          STATION DESCRIPTION
 AE3979
 AE3979'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3979'STATION IS LOCATED ABOUT 2.0 MI (3.2 KM) WEST OF CHASE AND ABOUT 2.0
 AE3979'MI (3.2 KM) SOUTHEAST OF WHITE MARSH. TO REACH STATION FROM THE WHITE
 AE3979'MARSH BLVD (ROUTE 43) OVERPASS OVER I-95 GO EAST ON WHITE MARSH BLVD
 AE3979'FOR 1.25 MI (2.01 KM) THE INTERSECTION WITH ROUTE 40 (PULASKI HIGHWAY)
 AE3979'.  TURN RIGHT AND GO EAST ON ROUTE 40 FOR 0.6 MI (1.0 KM) TO EBENEZER
 AE3979'ROAD TURN RIGHT AND GO EAST ON EBENEZER ROAD FOR 2.3 MI (3.7 KM) TO
 AE3979'THE STATION ON THE RIGHT,  IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AE3979'MONUMENT SET FLUSH WITH THE GROUND.  IT IS 100.55 FT (30.65 M) EAST OF
 AE3979'POWER POLE NO.  87626, 80.52 FT (24.54 M) WEST OF POWER POLE NO.
 AE3979'87625, 18.41 FT (5.61 M) SOUTH OF THE CENTERLINE OF THE ROAD AND 7.89
 AE3979'FT (2.40 M) SOUTH OF THE EDGE OF PAVE.
 AE3979
 AE3979                          STATION RECOVERY (2020)
 AE3979
 AE3979'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (BRF)
 AE3979'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7690 ***********************************************************************
 AC7690  DESIGNATION -  GIS 7
 AC7690  PID         -  AC7690
 AC7690  STATE/COUNTY-  MD/BALTIMORE
 AC7690  COUNTRY     -  US
 AC7690  USGS QUAD   -  MIDDLE RIVER (2016)
 AC7690
 AC7690                         *CURRENT SURVEY CONTROL
 AC7690  ______________________________________________________________________
 AC7690* NAD 83(2011) POSITION- 39 15 02.85341(N) 076 24 12.86482(W)   ADJUSTED
 AC7690* NAD 83(2011) ELLIP HT-   -28.559 (meters)        (06/27/12)   ADJUSTED
 AC7690* NAD 83(2011) EPOCH   -  2010.00
 AC7690* NAVD 88 ORTHO HEIGHT -     4.485 (meters)       14.71  (feet) ADJUSTED
 AC7690  ______________________________________________________________________
 AC7690  GEOID HEIGHT    -        -33.046 (meters)                     GEOID18
 AC7690  NAD 83(2011) X  -  1,162,651.015 (meters)                     COMP
 AC7690  NAD 83(2011) Y  - -4,807,135.126 (meters)                     COMP
 AC7690  NAD 83(2011) Z  -  4,013,898.194 (meters)                     COMP
 AC7690  LAPLACE CORR    -         -1.73  (seconds)                    DEFLEC18
 AC7690  DYNAMIC HEIGHT  -          4.482 (meters)       14.70  (feet) COMP
 AC7690  MODELED GRAVITY -    980,119.1   (mgal)                       NAVD 88
 AC7690
 AC7690  VERT ORDER      -  THIRD
 AC7690
 AC7690  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7690  Standards:
 AC7690         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7690            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7690  -------------------------------------------------------------------
 AC7690  NETWORK    0.67   1.23           0.29   0.26   0.63      0.03939363
 AC7690  -------------------------------------------------------------------
 AC7690  Click here for local accuracies and other accuracy information.
 AC7690
 AC7690.The horizontal coordinates were established by GPS observations
 AC7690.and adjusted by the National Geodetic Survey in June 2012.
 AC7690
 AC7690.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7690.been affixed to the stable North American tectonic plate. See 
 AC7690.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7690
 AC7690.The horizontal coordinates are valid at the epoch date displayed above
 AC7690.which is a decimal equivalence of Year/Month/Day.
 AC7690
 AC7690.The orthometric height was determined by differential leveling and
 AC7690.adjusted by the NATIONAL GEODETIC SURVEY
 AC7690.in February 1998.
 AC7690
 AC7690.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7690.GEOID18 height accuracy estimate available here.
 AC7690
 AC7690.Click photographs - Photos may exist for this station.
 AC7690
 AC7690.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7690
 AC7690.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7690
 AC7690.The ellipsoidal height was determined by GPS observations
 AC7690.and is referenced to NAD 83.
 AC7690
 AC7690.The dynamic height is computed by dividing the NAVD 88
 AC7690.geopotential number by the normal gravity value computed on the
 AC7690.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7690.degrees latitude (g = 980.6199 gals.).
 AC7690
 AC7690.The modeled gravity was interpolated from observed gravity values.
 AC7690
 AC7690. The following values were computed from the NAD 83(2011) position.
 AC7690
 AC7690;                    North         East     Units Scale Factor Converg.
 AC7690;SPC MD       -   176,015.736   451,481.542   MT  0.99997122   +0 22 27.6
 AC7690;SPC MD       -   577,478.29  1,481,235.69   sFT  0.99997122   +0 22 27.6
 AC7690;UTM  18      - 4,345,546.594   378,889.880   MT  0.99978060   -0 53 17.4
 AC7690
 AC7690!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7690!SPC MD       -   1.00000448  x   0.99997122  =   0.99997570
 AC7690!UTM  18      -   1.00000448  x   0.99978060  =   0.99978508
 AC7690
 AC7690_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7888945546(NAD 83)
 AC7690
 AC7690                          SUPERSEDED SURVEY CONTROL
 AC7690
 AC7690  NAD 83(2007)-  39 15 02.85368(N)    076 24 12.86560(W) AD(2002.00) 0
 AC7690  ELLIP H (02/10/07)  -28.541  (m)                       GP(2002.00)    
 AC7690  ELLIP H (08/30/02)  -28.526  (m)                       GP(       ) 4 2
 AC7690  NAD 83(1991)-  39 15 02.85329(N)    076 24 12.86509(W) AD(       ) 1
 AC7690  ELLIP H (04/08/97)  -28.603  (m)                       GP(       ) 3 1
 AC7690  NAVD 88 (04/08/97)    4.5    (m)  GEOID93  model used  GPS OBS        
 AC7690
 AC7690.Superseded values are not recommended for survey control.
 AC7690
 AC7690.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7690.See file dsdata.pdf to determine how the superseded data were derived.
 AC7690
 AC7690_MARKER: DD = SURVEY DISK
 AC7690_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7690_STAMPING: GIS-7 1995
 AC7690_MARK LOGO: MD-005
 AC7690_PROJECTION: FLUSH
 AC7690_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7690_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7690+STABILITY: SURFACE MOTION
 AC7690_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7690+SATELLITE: SATELLITE OBSERVATIONS - November 29, 2021
 AC7690
 AC7690  HISTORY     - Date     Condition        Report By
 AC7690  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7690  HISTORY     - 20020903 GOOD             DMW
 AC7690  HISTORY     - 20030115 GOOD             USPSQD
 AC7690  HISTORY     - 20040406 GOOD             URS
 AC7690  HISTORY     - 20080228 GOOD             DEWDAV
 AC7690  HISTORY     - 20211129 GOOD             MDSHA
 AC7690
 AC7690                          STATION DESCRIPTION
 AC7690
 AC7690'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7690'STATION IS LOCATED ABOUT 10.0 MI (16.1 KM) SOUTHEAST OF THE CENTER OF
 AC7690'BALTIMORE AND ABOUT 4.5 MI (7.2 KM) SOUTHEAST OF ESSEX AT ROCKY POINT
 AC7690'PARK. TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO ROUTE 702
 AC7690'(SOUTHEAST BLVD). GO SOUTH ON RT 702 AND BACK RIVER NECK ROAD (RT 702
 AC7690'TURNS INTO BACK RIVER NECK ROAD) FOR 4.65 MI (7.48 KM) TO BARRISON
 AC7690'POINT ROAD. TURN LEFT AND GO EAST ON BARISON POINT ROAD FOR 0.4 MI
 AC7690'(0.6 KM) TO ROCKY POINT ROAD. TURN RIGHT AND GO SOUTH ON ROCKY POINT
 AC7690'ROAD FOR 0.65 MI (1.05 KM) TO THE ENTRANCE OF ROCKY POINT PARK.
 AC7690'CONTINUE SOUTH ON ENTRANCE ROAD FOR 0.15 MI (0.24 KM) TO STATION ON
 AC7690'THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AC7690'MONUMENT SET FLUSH WITH THE GROUND. IT IS 156.93 FT (47.83 M)
 AC7690'SOUTHEAST OF POWER POLE NO. 231118, 23.17 FT (7.06 M) NORTHEAST OF THE
 AC7690'CENTERLINE OF THE ROAD, 51.66 FT (15.75 M) NORTHEAST OF A WELL AND
 AC7690'60.28 FT (18.37 M) NORTHWEST OF POWER POLE NO. 210343.
 AC7690
 AC7690                          STATION RECOVERY (2002)
 AC7690
 AC7690'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (RSW)
 AC7690'RECOVERED IN GOOD CONDITION.
 AC7690
 AC7690                          STATION RECOVERY (2003)
 AC7690
 AC7690'RECOVERY NOTE BY US POWER SQUADRON 2003 (RZ)
 AC7690'RECOVERED AS DESCRIBED
 AC7690
 AC7690                          STATION RECOVERY (2004)
 AC7690
 AC7690'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 AC7690'RECOVERED IN GOOD CONDITION.
 AC7690
 AC7690                          STATION RECOVERY (2008)
 AC7690
 AC7690'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AC7690'RECOVERED IN GOOD CONDITION.
 AC7690
 AC7690                          STATION RECOVERY (2021)
 AC7690
 AC7690'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 AC7690'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6422 ***********************************************************************
 DG6422  DESIGNATION -  GIS 7
 DG6422  PID         -  DG6422
 DG6422  STATE/COUNTY-  MD/TALBOT
 DG6422  COUNTRY     -  US
 DG6422  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6422
 DG6422                         *CURRENT SURVEY CONTROL
 DG6422  ______________________________________________________________________
 DG6422* NAD 83(1986) POSITION- 38 46 43.97   (N) 076 13 25.71   (W)   HD_HELD1
 DG6422* NAVD 88 ORTHO HEIGHT -     2.336 (meters)        7.66  (feet) ADJUSTED
 DG6422  ______________________________________________________________________
 DG6422  GEOID HEIGHT    -        -34.345 (meters)                     GEOID18
 DG6422  DYNAMIC HEIGHT  -          2.334 (meters)        7.66  (feet) COMP
 DG6422  MODELED GRAVITY -    980,044.8   (mgal)                       NAVD 88
 DG6422
 DG6422  VERT ORDER      -  SECOND    CLASS I
 DG6422
 DG6422.The horizontal coordinates were determined by differentially corrected
 DG6422.hand held GPS observations or other comparable positioning techniques
 DG6422.and have an estimated accuracy of +/- 3 meters.
 DG6422
 DG6422.The orthometric height was determined by differential leveling and
 DG6422.adjusted by the NATIONAL GEODETIC SURVEY
 DG6422.in September 2004.
 DG6422
 DG6422.No vertical observational check was made to the station.
 DG6422
 DG6422.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6422.GEOID18 height accuracy estimate available here.
 DG6422
 DG6422.Click photographs - Photos may exist for this station.
 DG6422
 DG6422.The dynamic height is computed by dividing the NAVD 88
 DG6422.geopotential number by the normal gravity value computed on the
 DG6422.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6422.degrees latitude (g = 980.6199 gals.).
 DG6422
 DG6422.The modeled gravity was interpolated from observed gravity values.
 DG6422
 DG6422;                    North         East    Units  Estimated Accuracy
 DG6422;SPC MD       -   123,746.9     467,443.4     MT  (+/- 3 meters HH1 GPS) 
 DG6422
 DG6422_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9369792950(NAD 83)
 DG6422
 DG6422                          SUPERSEDED SURVEY CONTROL
 DG6422
 DG6422.No superseded survey control is available for this station.
 DG6422
 DG6422_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6422_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6422_STAMPING: NO GIS 7 1995
 DG6422_MARK LOGO: MD1370
 DG6422_PROJECTION: FLUSH
 DG6422_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6422_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6422+STABILITY: SURFACE MOTION
 DG6422_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6422+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 DG6422
 DG6422  HISTORY     - Date     Condition        Report By
 DG6422  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6422  HISTORY     - 19991213 GOOD             MDSHA
 DG6422  HISTORY     - 20060328 GOOD             USPSQD
 DG6422  HISTORY     - 20231213 GOOD             MDSHA
 DG6422
 DG6422                          STATION DESCRIPTION
 DG6422
 DG6422'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6422'THE MARK IS LOCATED IN THE TOWN OF ST. MICHAELS.  TO REACH THE MARK
 DG6422'FROM THE POST OFFICE IN ST. MICHAELS, PROCEED SOUTHEAST ALONG MARYLAND
 DG6422'STATE HIGHWAY 33 FOR 0.35 MILES (0.56 KM) TO BOUNDARY LANE. TURN RIGHT
 DG6422'AND PROCEED WEST ON BOUNDARY LANE FOR 0.15 MILES (0.24 KM) TO THE MARK
 DG6422'ON THE RIGHT.  IT IS 21.1 FEET (6.4 M) NORTH OF THE CENTER OF THE
 DG6422'ROAD, 94.5 FEET (28.8 M) WEST OF POWER POLE NUMBER 29160-08373, 121.5
 DG6422'FEET (37.0 M) EAST OF POWER POLE NUMBER 29140-08365 AND 92.5 FEET
 DG6422'(28.2 M) NORTHEAST OF A 60 INCH (152 CM) OAK TREE.  IT IS A TOSM DISK
 DG6422'SET IN THE TOP OF A 7 INCH (18 CM) ROUND CONCRETE MONUMENT FLUSH WITH
 DG6422'THE GROUND AND 1 FOOT (0.3 M) LOWER THAN THE SURFACE OF THE ROAD.
 DG6422
 DG6422                          STATION RECOVERY (2006)
 DG6422
 DG6422'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6422'RECOVERED IN GOOD CONDITION.
 DG6422
 DG6422                          STATION RECOVERY (2023)
 DG6422
 DG6422'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DG6422'RECOVERED IN GOOD CONDITION.
 DG6422'
 DG6422'NOTE-ADD-THE MARK IS 122.3 FT (37.3 M) EAST OF A UTILITY POLE NUMBERED
 DG6422'632-13-3 AND 95.7 FT (29.2 M) WEST OF A UTILITY POLE NUMBERED
 DG6422'632-13-2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3980 ***********************************************************************
 AE3980  CBN         -  This is a Cooperative Base Network Control Station.
 AE3980  DESIGNATION -  GIS 70
 AE3980  PID         -  AE3980
 AE3980  STATE/COUNTY-  MD/BALTIMORE
 AE3980  COUNTRY     -  US
 AE3980  USGS QUAD   -  GUNPOWDER NECK (2016)
 AE3980
 AE3980                         *CURRENT SURVEY CONTROL
 AE3980  ______________________________________________________________________
 AE3980* NAD 83(2011) POSITION- 39 21 43.82321(N) 076 21 44.02639(W)   ADJUSTED
 AE3980* NAD 83(2011) ELLIP HT-   -29.220 (meters)        (06/27/12)   ADJUSTED
 AE3980* NAD 83(2011) EPOCH   -  2010.00
 AE3980* NAVD 88 ORTHO HEIGHT -     3.876 (meters)       12.72  (feet) ADJUSTED
 AE3980  ______________________________________________________________________
 AE3980  GEOID HEIGHT    -        -33.094 (meters)                     GEOID18
 AE3980  NAD 83(2011) X  -  1,164,272.437 (meters)                     COMP
 AE3980  NAD 83(2011) Y  - -4,798,682.084 (meters)                     COMP
 AE3980  NAD 83(2011) Z  -  4,023,465.851 (meters)                     COMP
 AE3980  LAPLACE CORR    -         -3.05  (seconds)                    DEFLEC18
 AE3980  DYNAMIC HEIGHT  -          3.874 (meters)       12.71  (feet) COMP
 AE3980  MODELED GRAVITY -    980,105.0   (mgal)                       NAVD 88
 AE3980
 AE3980  VERT ORDER      -  THIRD
 AE3980
 AE3980  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE3980  Standards:
 AE3980         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE3980            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE3980  -------------------------------------------------------------------
 AE3980  NETWORK    0.64   1.22           0.29   0.23   0.62     -0.03113519
 AE3980  -------------------------------------------------------------------
 AE3980  Click here for local accuracies and other accuracy information.
 AE3980
 AE3980.The horizontal coordinates were established by GPS observations
 AE3980.and adjusted by the National Geodetic Survey in June 2012.
 AE3980
 AE3980.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE3980.been affixed to the stable North American tectonic plate. See 
 AE3980.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE3980
 AE3980.The horizontal coordinates are valid at the epoch date displayed above
 AE3980.which is a decimal equivalence of Year/Month/Day.
 AE3980
 AE3980.The orthometric height was determined by differential leveling and
 AE3980.adjusted by the NATIONAL GEODETIC SURVEY
 AE3980.in February 1998.
 AE3980
 AE3980.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3980.GEOID18 height accuracy estimate available here.
 AE3980
 AE3980.Click photographs - Photos may exist for this station.
 AE3980
 AE3980.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE3980
 AE3980.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE3980
 AE3980.The ellipsoidal height was determined by GPS observations
 AE3980.and is referenced to NAD 83.
 AE3980
 AE3980.The dynamic height is computed by dividing the NAVD 88
 AE3980.geopotential number by the normal gravity value computed on the
 AE3980.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3980.degrees latitude (g = 980.6199 gals.).
 AE3980
 AE3980.The modeled gravity was interpolated from observed gravity values.
 AE3980
 AE3980. The following values were computed from the NAD 83(2011) position.
 AE3980
 AE3980;                    North         East     Units Scale Factor Converg.
 AE3980;SPC MD       -   188,404.901   454,963.775   MT  0.99998582   +0 24 01.0
 AE3980;SPC MD       -   618,125.08  1,492,660.32   sFT  0.99998582   +0 24 01.0
 AE3980;UTM  18      - 4,357,853.465   382,643.676   MT  0.99976957   -0 51 50.6
 AE3980
 AE3980!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE3980!SPC MD       -   1.00000458  x   0.99998582  =   0.99999040
 AE3980!UTM  18      -   1.00000458  x   0.99976957  =   0.99977415
 AE3980
 AE3980_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8264357853(NAD 83)
 AE3980
 AE3980                          SUPERSEDED SURVEY CONTROL
 AE3980
 AE3980  NAD 83(2007)-  39 21 43.82344(N)    076 21 44.02716(W) AD(2002.00) 0
 AE3980  ELLIP H (02/10/07)  -29.198  (m)                       GP(2002.00)    
 AE3980  NAD 83(1991)-  39 21 43.82348(N)    076 21 44.02728(W) AD(       ) A
 AE3980  ELLIP H (02/12/02)  -29.193  (m)                       GP(       ) 4 1
 AE3980  NAVD 88               3.88   (m)           12.7    (f) LEVELING    3  
 AE3980
 AE3980.Superseded values are not recommended for survey control.
 AE3980
 AE3980.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE3980.See file dsdata.pdf to determine how the superseded data were derived.
 AE3980
 AE3980_MARKER: DD = SURVEY DISK
 AE3980_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3980_STAMPING: NO. GIS-70 1995
 AE3980_MARK LOGO: MD-005
 AE3980_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE3980_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3980+STABILITY: SURFACE MOTION
 AE3980_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3980+SATELLITE: SATELLITE OBSERVATIONS - October 17, 2014
 AE3980
 AE3980  HISTORY     - Date     Condition        Report By
 AE3980  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3980  HISTORY     - 20000327 GOOD             MDSHA
 AE3980  HISTORY     - 20060803 GOOD             GPSSS
 AE3980  HISTORY     - 20080228 GOOD             DEWDAV
 AE3980  HISTORY     - 20090824 GOOD             MD-005
 AE3980  HISTORY     - 20121020 GOOD             USPSQD
 AE3980  HISTORY     - 20141017 GOOD             INDIV
 AE3980
 AE3980                          STATION DESCRIPTION
 AE3980
 AE3980'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3980'STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) EAST OF CHASE. TO REACH
 AE3980'STATION FROM THE WHITE MARSH BLVD (ROUTE 43) OVER PASS OVER I-95 GO
 AE3980'EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01 KM) THE INTERSECTION WITH
 AE3980'ROUTE 40 (PULASKI HIGHWAY) .  TURN RIGHT AND GO EAST ON ROUTE 40 FOR
 AE3980'0.6 MI (1.0 KM) TO EBENEZER ROAD TURN RIGHT AND GO EAST ON EBENEZER
 AE3980'ROAD AND GRACES QUARTERS ROAD FOR 3.9 MI (6.3 KM) TO THE STATION ON
 AE3980'THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AE3980'MONUMENT SET FLUSH WITH THE GROUND.  IT IS 41.15 FT (12.54 M) EAST OF
 AE3980'POWER POLE NO.  94847, 90.25 FT (27.51 M) SOUTHEAST OF THE EAST END OF
 AE3980'A GUARDRAIL, 40.95 FT (12.48 M) SOUTH OF THE CENTERLINE OF GRACES
 AE3980'QUARTERS ROAD, 54 FT (16.5 M) WEST OF A FIELD ENTRANCE AND 215 WEST OF
 AE3980'THE CENTERLINE OF THE INTERSECTION OF CUNNINGHILL COVE ROAD AND GRACES
 AE3980'QUARTERS ROAD.
 AE3980
 AE3980                          STATION RECOVERY (2000)
 AE3980
 AE3980'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AE3980'RECOVERED AS DESCRIBED.
 AE3980
 AE3980                          STATION RECOVERY (2006)
 AE3980
 AE3980'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (KK)
 AE3980'RECOVERED BY KEVIN AND RYAN OF DIETZ SURVEYING.
 AE3980
 AE3980                          STATION RECOVERY (2008)
 AE3980
 AE3980'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AE3980'RECOVERED IN GOOD CONDITION.
 AE3980
 AE3980                          STATION RECOVERY (2009)
 AE3980
 AE3980'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE3980'RECOVERED IN GOOD CONDITION.
 AE3980
 AE3980                          STATION RECOVERY (2012)
 AE3980
 AE3980'RECOVERY NOTE BY US POWER SQUADRON 2012
 AE3980'RECOVERED IN GOOD CONDITION.
 AE3980
 AE3980                          STATION RECOVERY (2014)
 AE3980
 AE3980'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 AE3980'RECOVERED AS DESCRIBED, USED FOR STATIC GPS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3981 ***********************************************************************
 AE3981  DESIGNATION -  GIS 71
 AE3981  PID         -  AE3981
 AE3981  STATE/COUNTY-  MD/BALTIMORE
 AE3981  COUNTRY     -  US
 AE3981  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3981
 AE3981                         *CURRENT SURVEY CONTROL
 AE3981  ______________________________________________________________________
 AE3981* NAD 83(1986) POSITION- 39 18 53.74   (N) 076 23 04.95   (W)   HD_HELD1
 AE3981* NAVD 88 ORTHO HEIGHT -     2.418 (meters)        7.93  (feet) ADJUSTED
 AE3981  ______________________________________________________________________
 AE3981  GEOID HEIGHT    -        -33.077 (meters)                     GEOID18
 AE3981  DYNAMIC HEIGHT  -          2.416 (meters)        7.93  (feet) COMP
 AE3981  MODELED GRAVITY -    980,110.6   (mgal)                       NAVD 88
 AE3981
 AE3981  VERT ORDER      -  THIRD
 AE3981
 AE3981.The horizontal coordinates were determined by differentially corrected
 AE3981.hand held GPS observations or other comparable positioning techniques
 AE3981.and have an estimated accuracy of +/- 3 meters.
 AE3981
 AE3981.The orthometric height was determined by differential leveling and
 AE3981.adjusted by the NATIONAL GEODETIC SURVEY
 AE3981.in February 1998.
 AE3981
 AE3981.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3981.GEOID18 height accuracy estimate available here.
 AE3981
 AE3981.Click photographs - Photos may exist for this station.
 AE3981
 AE3981.The dynamic height is computed by dividing the NAVD 88
 AE3981.geopotential number by the normal gravity value computed on the
 AE3981.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3981.degrees latitude (g = 980.6199 gals.).
 AE3981
 AE3981.The modeled gravity was interpolated from observed gravity values.
 AE3981
 AE3981;                    North         East    Units  Estimated Accuracy
 AE3981;SPC MD       -   183,146.5     453,061.9     MT  (+/- 3 meters HH1 GPS) 
 AE3981
 AE3981_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8062652639(NAD 83)
 AE3981
 AE3981                          SUPERSEDED SURVEY CONTROL
 AE3981
 AE3981.No superseded survey control is available for this station.
 AE3981
 AE3981_MARKER: DD = SURVEY DISK
 AE3981_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3981_STAMPING: NO. GIS-71 1995
 AE3981_MARK LOGO: MD-005
 AE3981_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3981_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3981+STABILITY: SURFACE MOTION
 AE3981_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3981+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2013
 AE3981
 AE3981  HISTORY     - Date     Condition        Report By
 AE3981  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3981  HISTORY     - 20080228 GOOD             DEWDAV
 AE3981  HISTORY     - 20131031 GOOD             USPSQD
 AE3981
 AE3981                          STATION DESCRIPTION
 AE3981
 AE3981'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3981'STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) EAST OF ESSEX AND ABOUT 1.5
 AE3981'MI (2.4 KM) SOUTHEAST OF GLEN L.  MARTIN STATE AIRPORT. TO REACH
 AE3981'STATION FROM THE WHITE MARSH BLVD (ROUTE 43) OVER PASS OVER I-95 GO
 AE3981'EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01 KM) THE INTERSECTION WITH
 AE3981'ROUTE 40 (PULASKI HIGHWAY) .  TURN RIGHT AND GO EAST ON ROUTE 40 FOR
 AE3981'0.6 MI (1.0 KM) TO EBENEZER ROAD TURN RIGHT AND GO EAST ON EBENEZER
 AE3981'ROAD FOR 2.5 MI (4.0 KM) TO THE INTERSECTION WITH EARLS ROAD.  TURN
 AE3981'RIGHT ON EARLS ROAD AND GO 1.45 MI (2.33 KM) TO THE INTERSECTION WITH
 AE3981'EASTERN AVE.  TURN RIGHT ON EASTERN AVE AND GO 0.1 MI (0.2 KM) TO THE
 AE3981'INTERSECTION WITH BOWLEYS QUARTERS ROAD.  TURN LEFT ON BOWLEYS
 AE3981'QUARTERS ROAD AND GO 2.2 MI (3.5 KM) TO THE INTERSECTION WITH CHESTNUT
 AE3981'ROAD HEADING SOUTH AND THE STATION ON THE RIGHT,  IN THE TOP OF A 10
 AE3981'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 56.50
 AE3981'FT (17.22 M) SOUTH OF POWER POLE NO.  366237, 34.58 FT (10.54 M) SOUTH
 AE3981'OF A WATER VALVE MANHOLE, 19.66 FT (5.99 M) EAST OF THE CENTERLINE OF
 AE3981'CHESTNUT ROAD, 6.76 FT (2.06 M) WEST OF POLE NO.  67.5 AND 20.65 FT
 AE3981'(6.29 M) SOUTH OF THE CENTERLINE OF BOWLEYS QUARTERS ROAD.
 AE3981
 AE3981                          STATION RECOVERY (2008)
 AE3981
 AE3981'RECOVERY NOTE BY DEWBERRY DAVIS 2008 (RLA)
 AE3981'RECOVERED IN GOOD CONDITION.
 AE3981
 AE3981                          STATION RECOVERY (2013)
 AE3981
 AE3981'RECOVERY NOTE BY US POWER SQUADRON 2013
 AE3981'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3982 ***********************************************************************
 AE3982  DESIGNATION -  GIS 72
 AE3982  PID         -  AE3982
 AE3982  STATE/COUNTY-  MD/BALTIMORE
 AE3982  COUNTRY     -  US
 AE3982  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3982
 AE3982                         *CURRENT SURVEY CONTROL
 AE3982  ______________________________________________________________________
 AE3982* NAD 83(1986) POSITION- 39 18 36.70   (N) 076 23 48.76   (W)   HD_HELD1
 AE3982* NAVD 88 ORTHO HEIGHT -     2.397 (meters)        7.86  (feet) ADJUSTED
 AE3982  ______________________________________________________________________
 AE3982  GEOID HEIGHT    -        -33.063 (meters)                     GEOID18
 AE3982  DYNAMIC HEIGHT  -          2.396 (meters)        7.86  (feet) COMP
 AE3982  MODELED GRAVITY -    980,110.9   (mgal)                       NAVD 88
 AE3982
 AE3982  VERT ORDER      -  THIRD
 AE3982
 AE3982.The horizontal coordinates were determined by differentially corrected
 AE3982.hand held GPS observations or other comparable positioning techniques
 AE3982.and have an estimated accuracy of +/- 3 meters.
 AE3982
 AE3982.The orthometric height was determined by differential leveling and
 AE3982.adjusted by the NATIONAL GEODETIC SURVEY
 AE3982.in February 1998.
 AE3982
 AE3982.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3982.GEOID18 height accuracy estimate available here.
 AE3982
 AE3982.Click photographs - Photos may exist for this station.
 AE3982
 AE3982.The dynamic height is computed by dividing the NAVD 88
 AE3982.geopotential number by the normal gravity value computed on the
 AE3982.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3982.degrees latitude (g = 980.6199 gals.).
 AE3982
 AE3982.The modeled gravity was interpolated from observed gravity values.
 AE3982
 AE3982;                    North         East    Units  Estimated Accuracy
 AE3982;SPC MD       -   182,614.1     452,015.9     MT  (+/- 3 meters HH1 GPS) 
 AE3982
 AE3982_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7956952130(NAD 83)
 AE3982
 AE3982                          SUPERSEDED SURVEY CONTROL
 AE3982
 AE3982.No superseded survey control is available for this station.
 AE3982
 AE3982_MARKER: DD = SURVEY DISK
 AE3982_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3982_STAMPING: NO. GIS-72 1995
 AE3982_MARK LOGO: MD-005
 AE3982_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3982_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3982+STABILITY: SURFACE MOTION
 AE3982_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3982+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2013
 AE3982
 AE3982  HISTORY     - Date     Condition        Report By
 AE3982  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3982  HISTORY     - 20131031 GOOD             USPSQD
 AE3982
 AE3982                          STATION DESCRIPTION
 AE3982
 AE3982'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3982'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) EAST OF ESSEX AND ABOUT 1.5
 AE3982'MI (2.4 KM) SOUTHEAST OF GLEN L.  MARTIN STATE AIRPORT. TO REACH
 AE3982'STATION FROM THE WHITE MARSH BLVD (ROUTE 43) OVER PASS OVER I-95 GO
 AE3982'EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01 KM) THE INTERSECTION WITH
 AE3982'ROUTE 40 (PULASKI HIGHWAY) .  TURN RIGHT AND GO EAST ON ROUTE 40 FOR
 AE3982'0.6 MI (1.0 KM) TO EBENEZER ROAD TURN RIGHT AND GO EAST ON EBENEZER
 AE3982'ROAD FOR 2.5 MI (4.0 KM) TO THE INTERSECTION WITH EARLS ROAD.  TURN
 AE3982'RIGHT ON EARLS ROAD AND GO 1.45 MI (2.33 KM) TO THE INTERSECTION WITH
 AE3982'EASTERN AVE.  TURN RIGHT ON EASTERN AVE AND GO 0.1 MI (0.2 KM) TO THE
 AE3982'INTERSECTION WITH BOWLEYS QUARTERS ROAD.  TURN LEFT ON BOWLEYS
 AE3982'QUARTERS ROAD AND GO 1.45 MI (2.33 KM) TO THE INTERSECTION WITH
 AE3982'SUSQUEHANNA AVE.  TURN RIGHT ON SUSQUEHANNA AVE AND GO 0.75 MI (1.21
 AE3982'KM) TO CHESAPEAKE AVE.  TURN LEFT ON CHESAPEAKE AVE AND GO 0.1 MI (0.2
 AE3982'KM) TO THE INTERSECTION WITH CHOPTANK AVE AND THE STATION ON LEFT, IN
 AE3982'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE3982'GROUND.  IT IS 11.97 FT (3.65 M) SOUTHEAST OF THE CENTERLINE OF
 AE3982'CHOPTANK AVE, 7.68 FT (2.34 M) EAST OF A WATER VALVE MANHOLE, 7.93 FT
 AE3982'(2.42 M) NORTHEAST OF POWER POLE NO.  62438, 23.23 FT (7.08 M)
 AE3982'NORTHEAST OF THE CENTERLINE OF CHESAPEAKE AVE AND 6.91 FT (2.11 M)
 AE3982'NORTHWEST OF THE SOUTHWEST CORNER OF A WOODEN SPLIT RAIL FENCE.
 AE3982
 AE3982                          STATION RECOVERY (2013)
 AE3982
 AE3982'RECOVERY NOTE BY US POWER SQUADRON 2013
 AE3982'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3983 ***********************************************************************
 AE3983  DESIGNATION -  GIS 73
 AE3983  PID         -  AE3983
 AE3983  STATE/COUNTY-  MD/BALTIMORE
 AE3983  COUNTRY     -  US
 AE3983  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3983
 AE3983                         *CURRENT SURVEY CONTROL
 AE3983  ______________________________________________________________________
 AE3983* NAD 83(1986) POSITION- 39 19 32.80   (N) 076 23 39.52   (W)   HD_HELD1
 AE3983* NAVD 88 ORTHO HEIGHT -     3.537 (meters)       11.60  (feet) ADJUSTED
 AE3983  ______________________________________________________________________
 AE3983  GEOID HEIGHT    -        -33.063 (meters)                     GEOID18
 AE3983  DYNAMIC HEIGHT  -          3.535 (meters)       11.60  (feet) COMP
 AE3983  MODELED GRAVITY -    980,109.2   (mgal)                       NAVD 88
 AE3983
 AE3983  VERT ORDER      -  THIRD
 AE3983
 AE3983.The horizontal coordinates were determined by differentially corrected
 AE3983.hand held GPS observations or other comparable positioning techniques
 AE3983.and have an estimated accuracy of +/- 3 meters.
 AE3983
 AE3983.The orthometric height was determined by differential leveling and
 AE3983.adjusted by the NATIONAL GEODETIC SURVEY
 AE3983.in February 1998.
 AE3983
 AE3983.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3983.GEOID18 height accuracy estimate available here.
 AE3983
 AE3983.Click photographs - Photos may exist for this station.
 AE3983
 AE3983.The dynamic height is computed by dividing the NAVD 88
 AE3983.geopotential number by the normal gravity value computed on the
 AE3983.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3983.degrees latitude (g = 980.6199 gals.).
 AE3983
 AE3983.The modeled gravity was interpolated from observed gravity values.
 AE3983
 AE3983;                    North         East    Units  Estimated Accuracy
 AE3983;SPC MD       -   184,345.5     452,225.8     MT  (+/- 3 meters HH1 GPS) 
 AE3983
 AE3983_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7981753856(NAD 83)
 AE3983
 AE3983                          SUPERSEDED SURVEY CONTROL
 AE3983
 AE3983.No superseded survey control is available for this station.
 AE3983
 AE3983_MARKER: DD = SURVEY DISK
 AE3983_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3983_STAMPING: NO. GIS-73 1995
 AE3983_MARK LOGO: MD-005
 AE3983_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3983_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3983+STABILITY: SURFACE MOTION
 AE3983_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3983+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2013
 AE3983
 AE3983  HISTORY     - Date     Condition        Report By
 AE3983  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3983  HISTORY     - 20131031 GOOD             USPSQD
 AE3983
 AE3983                          STATION DESCRIPTION
 AE3983
 AE3983'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3983'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) EAST OF ESSEX AND ABOUT 1.25
 AE3983'MI (2.01 KM) SOUTHEAST OF GLEN L.  MARTIN STATE AIRPORT. TO REACH
 AE3983'STATION FROM THE WHITE MARSH BLVD (ROUTE 43) OVER PASS OVER I-95 GO
 AE3983'EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01 KM) THE INTERSECTION WITH
 AE3983'ROUTE 40 (PULASKI HIGHWAY) .  TURN RIGHT AND GO EAST ON ROUTE 40 FOR
 AE3983'0.6 MI (1.0 KM) TO EBENEZER ROAD TURN RIGHT AND GO EAST ON EBENEZER
 AE3983'ROAD FOR 2.5 MI (4.0 KM) TO THE INTERSECTION WITH EARLS ROAD.  TURN
 AE3983'RIGHT ON EARLS ROAD AND GO 1.45 MI (2.33 KM) TO THE INTERSECTION WITH
 AE3983'EASTERN AVE.  TURN RIGHT ON EASTERN AVE AND GO 0.1 MI (0.2 KM) TO THE
 AE3983'INTERSECTION WITH BOWLEYS QUARTERS ROAD.  TURN LEFT ON BOWLEYS
 AE3983'QUARTERS ROAD AND GO 0.7 MI (1.1 KM) TO THE INTERSECTION WITH SENECA
 AE3983'GARDENS ROAD AND THE STATION ON THE LEFT. STATION MARK IS SET IN THE
 AE3983'TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 AE3983'IT IS 27.87 FT (8.49 M) SOUTH OF POWER POLE NO.  62285, 34.45 EAST OF
 AE3983'THE CENTERLINE OF BOWLEYS QUARTERS ROAD, 23.87 FT (7.28 M) NORTHEAST
 AE3983'OF A WATER VALVE MANHOLE, 26.00 FT (7.92 M) NORTH OF THE CENTERLINE OF
 AE3983'SENECA GARDENS ROAD AND 19.41 FT (5.92 M) NORTHWEST OF A FIRE HYDRANT.
 AE3983
 AE3983                          STATION RECOVERY (2013)
 AE3983
 AE3983'RECOVERY NOTE BY US POWER SQUADRON 2013
 AE3983'THE MARKER IS SET 4 INCHES DEEP IN THE SIDEWALK IN A 4 IN. DIAMETER
 AE3983'PVC
 AE3983'RISER PIPE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3984 ***********************************************************************
 AE3984  DESIGNATION -  GIS 74
 AE3984  PID         -  AE3984
 AE3984  STATE/COUNTY-  MD/BALTIMORE
 AE3984  COUNTRY     -  US
 AE3984  USGS QUAD   -  MIDDLE RIVER (2016)
 AE3984
 AE3984                         *CURRENT SURVEY CONTROL
 AE3984  ______________________________________________________________________
 AE3984* NAD 83(1986) POSITION- 39 19 52.08   (N) 076 23 05.12   (W)   HD_HELD1
 AE3984* NAVD 88 ORTHO HEIGHT -     8.814 (meters)       28.92  (feet) ADJUSTED
 AE3984  ______________________________________________________________________
 AE3984  GEOID HEIGHT    -        -33.074 (meters)                     GEOID18
 AE3984  DYNAMIC HEIGHT  -          8.810 (meters)       28.90  (feet) COMP
 AE3984  MODELED GRAVITY -    980,108.7   (mgal)                       NAVD 88
 AE3984
 AE3984  VERT ORDER      -  THIRD
 AE3984
 AE3984.The horizontal coordinates were determined by differentially corrected
 AE3984.hand held GPS observations or other comparable positioning techniques
 AE3984.and have an estimated accuracy of +/- 3 meters.
 AE3984
 AE3984.The orthometric height was determined by differential leveling and
 AE3984.adjusted by the NATIONAL GEODETIC SURVEY
 AE3984.in February 1998.
 AE3984
 AE3984.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3984.GEOID18 height accuracy estimate available here.
 AE3984
 AE3984.Click photographs - Photos may exist for this station.
 AE3984
 AE3984.The dynamic height is computed by dividing the NAVD 88
 AE3984.geopotential number by the normal gravity value computed on the
 AE3984.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3984.degrees latitude (g = 980.6199 gals.).
 AE3984
 AE3984.The modeled gravity was interpolated from observed gravity values.
 AE3984
 AE3984;                    North         East    Units  Estimated Accuracy
 AE3984;SPC MD       -   184,945.6     453,045.7     MT  (+/- 3 meters HH1 GPS) 
 AE3984
 AE3984_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8065054438(NAD 83)
 AE3984
 AE3984                          SUPERSEDED SURVEY CONTROL
 AE3984
 AE3984.No superseded survey control is available for this station.
 AE3984
 AE3984_MARKER: DD = SURVEY DISK
 AE3984_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3984_STAMPING: NO. GIS-74 1995
 AE3984_MARK LOGO: MD-005
 AE3984_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3984_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3984+STABILITY: SURFACE MOTION
 AE3984_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3984+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2013
 AE3984
 AE3984  HISTORY     - Date     Condition        Report By
 AE3984  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3984  HISTORY     - 20131031 GOOD             USPSQD
 AE3984
 AE3984                          STATION DESCRIPTION
 AE3984
 AE3984'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3984'STATION IS LOCATED ABOUT 5.5 MI (8.9 KM) NORTHEAST OF ESSEX AND ABOUT
 AE3984'2.0 MI (3.2 KM) EAST OF GLEN L.  MARTIN STATE AIRPORT. TO REACH
 AE3984'STATION FROM THE WHITE MARSH BLVD (ROUTE 43) OVER PASS OVER I-95 GO
 AE3984'EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01 KM) THE INTERSECTION WITH
 AE3984'ROUTE 40 (PULASKI HIGHWAY) .  TURN RIGHT AND GO EAST ON ROUTE 40 FOR
 AE3984'0.6 MI (1.0 KM) TO EBENEZER ROAD TURN RIGHT AND GO EAST ON EBENEZER
 AE3984'ROAD FOR 2.5 MI (4.0 KM) TO THE INTERSECTION WITH EARLS ROAD.  TURN
 AE3984'RIGHT ON EARLS ROAD AND GO 1.45 MI (2.33 KM) TO THE INTERSECTION WITH
 AE3984'EASTERN AVE.  TURN RIGHT ON EASTERN AVE AND GO 0.1 MI (0.2 KM) TO THE
 AE3984'INTERSECTION WITH BOWLEYS QUARTERS ROAD.  TURN LEFT ON BOWLEYS
 AE3984'QUARTERS ROAD AND GO 0.35 MI (0.56 KM) TO THE INTERSECTION WITH
 AE3984'CARROLL ISLAND ROAD.  TURN LEFT ON CARROLL ISLAND ROAD FOR 0.8 MI (1.3
 AE3984'KM) TO THE INTERSECTION WITH BAYVILLE ROAD AND STATION ON THE RIGHT
 AE3984'BETWEEN THE CURB AND SIDEWALK. STATION MARK IS SET IN THE TOP OF A 10
 AE3984'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 24.84
 AE3984'FT (7.57 M) SOUTH OF THE CENTERLINE CARROLL ISLAND ROAD, 46.73 FT
 AE3984'(14.24 M) EAST OF THE CENTERLINE OF BAYVILLE ROAD, 31.08 FT (9.47 M)
 AE3984'NORTHEAST OF A LIGHT POLE, 39.18 FT (11.94 M) NORTHWEST OF THE
 AE3984'NORTHWEST CORNER OF A CHAIN LINK FENCE AND 35.55 FT (10.84 M) WEST OF
 AE3984'TELEPHONE POLE NO.  27.
 AE3984
 AE3984                          STATION RECOVERY (2013)
 AE3984
 AE3984'RECOVERY NOTE BY US POWER SQUADRON 2013
 AE3984'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE3985 ***********************************************************************
 AE3985  DESIGNATION -  GIS 75
 AE3985  PID         -  AE3985
 AE3985  STATE/COUNTY-  MD/BALTIMORE
 AE3985  COUNTRY     -  US
 AE3985  USGS QUAD   -  GUNPOWDER NECK (2016)
 AE3985
 AE3985                         *CURRENT SURVEY CONTROL
 AE3985  ______________________________________________________________________
 AE3985* NAD 83(1986) POSITION- 39 19 38.26   (N) 076 21 48.93   (W)   HD_HELD1
 AE3985* NAVD 88 ORTHO HEIGHT -     2.258 (meters)        7.41  (feet) ADJUSTED
 AE3985  ______________________________________________________________________
 AE3985  GEOID HEIGHT    -        -33.104 (meters)                     GEOID18
 AE3985  DYNAMIC HEIGHT  -          2.256 (meters)        7.40  (feet) COMP
 AE3985  MODELED GRAVITY -    980,109.3   (mgal)                       NAVD 88
 AE3985
 AE3985  VERT ORDER      -  THIRD
 AE3985
 AE3985.The horizontal coordinates were determined by differentially corrected
 AE3985.hand held GPS observations or other comparable positioning techniques
 AE3985.and have an estimated accuracy of +/- 3 meters.
 AE3985
 AE3985.The orthometric height was determined by differential leveling and
 AE3985.adjusted by the NATIONAL GEODETIC SURVEY
 AE3985.in February 1998.
 AE3985
 AE3985.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE3985.GEOID18 height accuracy estimate available here.
 AE3985
 AE3985.Click photographs - Photos may exist for this station.
 AE3985
 AE3985.The dynamic height is computed by dividing the NAVD 88
 AE3985.geopotential number by the normal gravity value computed on the
 AE3985.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE3985.degrees latitude (g = 980.6199 gals.).
 AE3985
 AE3985.The modeled gravity was interpolated from observed gravity values.
 AE3985
 AE3985;                    North         East    Units  Estimated Accuracy
 AE3985;SPC MD       -   184,531.9     454,873.4     MT  (+/- 3 meters HH1 GPS) 
 AE3985
 AE3985_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8246753984(NAD 83)
 AE3985
 AE3985                          SUPERSEDED SURVEY CONTROL
 AE3985
 AE3985.No superseded survey control is available for this station.
 AE3985
 AE3985_MARKER: DD = SURVEY DISK
 AE3985_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE3985_STAMPING: NO. GIS-75 1995
 AE3985_MARK LOGO: MD-005
 AE3985_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE3985_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE3985+STABILITY: SURFACE MOTION
 AE3985_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE3985+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2013
 AE3985
 AE3985  HISTORY     - Date     Condition        Report By
 AE3985  HISTORY     - 1995     MONUMENTED       MCCRON
 AE3985  HISTORY     - 20131031 GOOD             USPSQD
 AE3985
 AE3985                          STATION DESCRIPTION
 AE3985
 AE3985'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE3985'STATION IS LOCATED ABOUT 6.5 MI (10.5 KM) NORTHEAST OF ESSEX AND ABOUT
 AE3985'3.0 MI (4.8 KM) EAST OF GLEN L.  MARTIN STATE AIRPORT.  TO REACH
 AE3985'STATION FROM THE WHITE MARSH BLVD (ROUTE 43) OVER PASS OVER I-95 GO
 AE3985'EAST ON WHITE MARSH BLVD FOR 1.25 MI (2.01 KM) THE INTERSECTION WITH
 AE3985'ROUTE 40 (PULASKI HIGHWAY) .  TURN RIGHT AND GO EAST ON ROUTE 40 FOR
 AE3985'0.6 MI (1.0 KM) TO EBENEZER ROAD TURN RIGHT AND GO EAST ON EBENEZER
 AE3985'ROAD FOR 2.5 MI (4.0 KM) TO THE INTERSECTION WITH EARLS ROAD.  TURN
 AE3985'RIGHT ON EARLS ROAD AND GO 1.45 MI (2.33 KM) TO THE INTERSECTION WITH
 AE3985'EASTERN AVE.  TURN RIGHT ON EASTERN AVE AND GO 0.1 MI (0.2 KM) TO THE
 AE3985'INTERSECTION WITH BOWLEYS QUARTERS ROAD.  TURN LEFT ON BOWLEYS
 AE3985'QUARTERS ROAD AND GO 0.35 MI (0.56 KM) TO THE INTERSECTION WITH
 AE3985'CARROLL ISLAND ROAD.  TURN LEFT ON CARROLL ISLAND ROAD AND GO 2.05 MI
 AE3985'(3.30 KM) TO THE STATION ON THE LEFT.  STATION MARK IS SET IN THE TOP
 AE3985'OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT
 AE3985'IS 96.25 FT (29.34 M) NORTHEAST OF TELEPHONE POLE NO.  58, 22.18 FT
 AE3985'(6.76 M) NORTH OF THE CENTERLINE OF CARROLL ISLAND ROAD, 25.35 FT
 AE3985'(7.73 M) SOUTH OF A CHAIN LINK FENCE AND 151.871 FT (46.290 M)
 AE3985'NORTHWEST OF POWER POLE NO.  218569.
 AE3985
 AE3985                          STATION RECOVERY (2013)
 AE3985
 AE3985'RECOVERY NOTE BY US POWER SQUADRON 2013
 AE3985'THE MARKER IS LOCATED IN A RESTRICTED AREA ( ABERDEEN PROVING GROUNDS
 AE3985'
 AE3985'), PERMISSION REQUIRED TO ENTER THE AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2443 ***********************************************************************
 AE2443  DESIGNATION -  GIS 76
 AE2443  PID         -  AE2443
 AE2443  STATE/COUNTY-  MD/BALTIMORE
 AE2443  COUNTRY     -  US
 AE2443  USGS QUAD   -  TOWSON (2016)
 AE2443
 AE2443                         *CURRENT SURVEY CONTROL
 AE2443  ______________________________________________________________________
 AE2443* NAD 83(2011) POSITION- 39 28 49.53955(N) 076 31 47.34829(W)   ADJUSTED
 AE2443* NAD 83(2011) ELLIP HT-   102.370 (meters)        (06/27/12)   ADJUSTED
 AE2443* NAD 83(2011) EPOCH   -  2010.00
 AE2443* NAVD 88 ORTHO HEIGHT -   134.952 (meters)      442.76  (feet) ADJUSTED
 AE2443  ______________________________________________________________________
 AE2443  GEOID HEIGHT    -        -32.590 (meters)                     GEOID18
 AE2443  NAD 83(2011) X  -  1,148,313.006 (meters)                     COMP
 AE2443  NAD 83(2011) Y  - -4,794,058.018 (meters)                     COMP
 AE2443  NAD 83(2011) Z  -  4,033,691.618 (meters)                     COMP
 AE2443  LAPLACE CORR    -         -3.24  (seconds)                    DEFLEC18
 AE2443  DYNAMIC HEIGHT  -        134.881 (meters)      442.52  (feet) COMP
 AE2443  MODELED GRAVITY -    980,100.0   (mgal)                       NAVD 88
 AE2443
 AE2443  VERT ORDER      -  SECOND    CLASS II
 AE2443
 AE2443  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2443  Standards:
 AE2443         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2443            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2443  -------------------------------------------------------------------
 AE2443  NETWORK    1.96   3.33           0.90   0.66   1.70      0.12090897
 AE2443  -------------------------------------------------------------------
 AE2443  Click here for local accuracies and other accuracy information.
 AE2443
 AE2443.The horizontal coordinates were established by GPS observations
 AE2443.and adjusted by the National Geodetic Survey in June 2012.
 AE2443
 AE2443.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2443.been affixed to the stable North American tectonic plate. See 
 AE2443.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2443
 AE2443.The horizontal coordinates are valid at the epoch date displayed above
 AE2443.which is a decimal equivalence of Year/Month/Day.
 AE2443
 AE2443.The orthometric height was determined by differential leveling and
 AE2443.adjusted by the NATIONAL GEODETIC SURVEY
 AE2443.in February 1998.
 AE2443
 AE2443.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2443.GEOID18 height accuracy estimate available here.
 AE2443
 AE2443.Click photographs - Photos may exist for this station.
 AE2443
 AE2443.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2443
 AE2443.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2443
 AE2443.The ellipsoidal height was determined by GPS observations
 AE2443.and is referenced to NAD 83.
 AE2443
 AE2443.The dynamic height is computed by dividing the NAVD 88
 AE2443.geopotential number by the normal gravity value computed on the
 AE2443.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2443.degrees latitude (g = 980.6199 gals.).
 AE2443
 AE2443.The modeled gravity was interpolated from observed gravity values.
 AE2443
 AE2443. The following values were computed from the NAD 83(2011) position.
 AE2443
 AE2443;                    North         East     Units Scale Factor Converg.
 AE2443;SPC MD       -   201,446.055   440,453.261   MT  1.00000546   +0 17 42.4
 AE2443;SPC MD       -   660,910.93  1,445,053.74   sFT  1.00000546   +0 17 42.4
 AE2443;UTM  18      - 4,371,209.324   368,427.761   MT  0.99981314   -0 58 22.2
 AE2443
 AE2443!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2443!SPC MD       -   0.99998394  x   1.00000546  =   0.99998940
 AE2443!UTM  18      -   0.99998394  x   0.99981314  =   0.99979708
 AE2443
 AE2443:                Primary Azimuth Mark                     Grid Az
 AE2443:SPC MD       -  GIS 77                                   272 19 36.6
 AE2443:UTM  18      -  GIS 77                                   273 35 41.2
 AE2443
 AE2443_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6842771209(NAD 83)
 AE2443
 AE2443|---------------------------------------------------------------------|
 AE2443| PID    Reference Object                     Distance      Geod. Az  |
 AE2443|                                                           dddmmss.s |
 AE2443| AE2444 GIS 77                              APPROX. 0.8 KM 2723719.0 |
 AE2443|---------------------------------------------------------------------|
 AE2443
 AE2443                          SUPERSEDED SURVEY CONTROL
 AE2443
 AE2443  NAD 83(2007)-  39 28 49.53975(N)    076 31 47.34894(W) AD(2002.00) 0
 AE2443  ELLIP H (02/10/07)  102.389  (m)                       GP(2002.00)    
 AE2443  ELLIP H (08/30/02)  102.387  (m)                       GP(       ) 4 2
 AE2443  NAD 83(1991)-  39 28 49.53962(N)    076 31 47.34898(W) AD(       ) 1
 AE2443  ELLIP H (08/28/97)  102.382  (m)                       GP(       ) 3 2
 AE2443  NAVD 88 (08/28/97)  135.0    (m)  GEOID96  model used  GPS OBS        
 AE2443
 AE2443.Superseded values are not recommended for survey control.
 AE2443
 AE2443.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2443.See file dsdata.pdf to determine how the superseded data were derived.
 AE2443
 AE2443_MARKER: DD = SURVEY DISK
 AE2443_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2443_STAMPING: NO. GIS-76 1995
 AE2443_MARK LOGO: MD-005
 AE2443_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2443_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2443+STABILITY: SURFACE MOTION
 AE2443_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2443+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2005
 AE2443
 AE2443  HISTORY     - Date     Condition        Report By
 AE2443  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2443  HISTORY     - 19960201 GOOD             MCCRON
 AE2443  HISTORY     - 20050728 GOOD             DEWDAV
 AE2443
 AE2443                          STATION DESCRIPTION
 AE2443
 AE2443'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2443'STATION IS LOCATED ABOUT 13 MI (20.92 KM) NORTH OF THE CENTER OF
 AE2443'BALTIMORE AND 6 MI (9.66 KM) EAST OF COCKEYSVILLE. TO REACH THE
 AE2443'STATION FROM THE DULANEY VALLEY ROAD (ROUTE 146) OVERPASS OVER I-695
 AE2443'(BELTWAY) GO NORTH ON DULANEY VALLEY ROAD FOR 4.15 MI (6.68 KM) TO THE
 AE2443'INTERSECTION OF JARRETTSVILLE PIKE, BEAR RIGHT AND CONTINUE ON DULANEY
 AE2443'VALLEY ROAD FOR 1.7 MI (2.74 KM) TO THE INTERSECTION WITH LOCH RAVEN
 AE2443'DRIVE BEAR LEFT, AND CONTINUE ON DULANEY VALLEY ROAD FOR 1.3 MI (2.09
 AE2443'KM) TO ANTIQUE LANE ON THE RIGHT. TURN RIGHT ON ANTIQUE LANE AND GO
 AE2443'0.15 MI (0.24 KM) TO THE INTERSECTION OF ANTIQUE LANE AND RAVEN HURST
 AE2443'CIRCLE AND THE STATION ON THE RIGHT. STATION IS SET IN THE TOP OF A 10
 AE2443'INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS
 AE2443'31.70 FT (9.66 M) SOUTHWEST FROM A CABLE TV TRANSFORMER, 13.95 FT
 AE2443'(4.25 M) WEST OF A LIGHT POLE, 36.10 FT (11.00 M) NORTHWEST OF THE
 AE2443'CENTERLINE OF THE INTERSECTION, AND 5.55 FT (1.69 M) NORTH NORTHWEST
 AE2443'FROM THE BACK OF A MACADAM CURB ON RAVEN HURST CIRCLE.
 AE2443
 AE2443                          STATION RECOVERY (1996)
 AE2443
 AE2443'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2443'STATION IS LOCATED ABOUT 13 MI (20.9 KM) NORTH OF THE CENTER OF
 AE2443'BALTIMORE AND 6 MI (9.7 KM) EAST OF COCKEYSVILLE.  TO REACH THE
 AE2443'STATION FROM THE DULANEY VALLEY ROAD (ROUTE 146) OVERPASS OVER I-695
 AE2443'(BELTWAY) GO NORTH ON DULANEY VALLEY ROAD FOR 4.15 MI (6.68 KM) TO THE
 AE2443'INTERSECTION OF JARRETTSVILLE PIKE, BEAR RIGHT AND CONTINUE ON DULANEY
 AE2443'VALLEY ROAD FOR 1.7 MI (2.7 KM) TO THE INTERSECTION WITH LOCH RAVEN
 AE2443'DRIVE BEAR LEFT, AND CONTINUE ON DULANEY VALLEY ROAD FOR 1.3 MI (2.1
 AE2443'KM) TO ANTIQUE LANE ON THE RIGHT.  TURN RIGHT ON ANTIQUE LANE AND GO
 AE2443'0.15 MI (0.24 KM) TO THE INTERSECTION OF ANTIQUE LANE AND RAVEN HURST
 AE2443'CIRCLE AND THE STATION ON THE RIGHT.  STATION IS SET IN THE TOP OF A
 AE2443'10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS
 AE2443'31.70 FT (9.66 M) SOUTHWEST FROM A CABLE TV TRANSFORMER, 13.95 FT
 AE2443'(4.25 M) WEST OF A LIGHT POLE, 36.10 FT (11.00 M) NORTHWEST OF THE
 AE2443'CENTERLINE OF THE INTERSECTION, AND 5.55 FT (1.69 M) NORTH NORTHWEST
 AE2443'FROM THE BACK OF A MACADAM CURB ON RAVEN HURST CIRCLE.
 AE2443
 AE2443                          STATION RECOVERY (2005)
 AE2443
 AE2443'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (JY)
 AE2443'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2444 ***********************************************************************
 AE2444  DESIGNATION -  GIS 77
 AE2444  PID         -  AE2444
 AE2444  STATE/COUNTY-  MD/BALTIMORE
 AE2444  COUNTRY     -  US
 AE2444  USGS QUAD   -  TOWSON (2016)
 AE2444
 AE2444                         *CURRENT SURVEY CONTROL
 AE2444  ______________________________________________________________________
 AE2444* NAD 83(2011) POSITION- 39 28 50.76742(N) 076 32 21.98898(W)   ADJUSTED
 AE2444* NAD 83(2011) ELLIP HT-    86.355 (meters)        (06/27/12)   ADJUSTED
 AE2444* NAD 83(2011) EPOCH   -  2010.00
 AE2444* NAVD 88 ORTHO HEIGHT -   118.938 (meters)      390.22  (feet) ADJUSTED
 AE2444  ______________________________________________________________________
 AE2444  GEOID HEIGHT    -        -32.573 (meters)                     GEOID18
 AE2444  NAD 83(2011) X  -  1,147,499.381 (meters)                     COMP
 AE2444  NAD 83(2011) Y  - -4,794,215.364 (meters)                     COMP
 AE2444  NAD 83(2011) Z  -  4,033,710.664 (meters)                     COMP
 AE2444  LAPLACE CORR    -         -3.28  (seconds)                    DEFLEC18
 AE2444  DYNAMIC HEIGHT  -        118.876 (meters)      390.01  (feet) COMP
 AE2444  MODELED GRAVITY -    980,100.6   (mgal)                       NAVD 88
 AE2444
 AE2444  VERT ORDER      -  SECOND    CLASS II
 AE2444
 AE2444  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2444  Standards:
 AE2444         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2444            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2444  -------------------------------------------------------------------
 AE2444  NETWORK    1.08   1.53           0.48   0.39   0.78     -0.14703025
 AE2444  -------------------------------------------------------------------
 AE2444  Click here for local accuracies and other accuracy information.
 AE2444
 AE2444.The horizontal coordinates were established by GPS observations
 AE2444.and adjusted by the National Geodetic Survey in June 2012.
 AE2444
 AE2444.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2444.been affixed to the stable North American tectonic plate. See 
 AE2444.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2444
 AE2444.The horizontal coordinates are valid at the epoch date displayed above
 AE2444.which is a decimal equivalence of Year/Month/Day.
 AE2444
 AE2444.The orthometric height was determined by differential leveling and
 AE2444.adjusted by the NATIONAL GEODETIC SURVEY
 AE2444.in February 1998.
 AE2444
 AE2444.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2444.GEOID18 height accuracy estimate available here.
 AE2444
 AE2444.Click photographs - Photos may exist for this station.
 AE2444
 AE2444.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2444
 AE2444.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2444
 AE2444.The ellipsoidal height was determined by GPS observations
 AE2444.and is referenced to NAD 83.
 AE2444
 AE2444.The dynamic height is computed by dividing the NAVD 88
 AE2444.geopotential number by the normal gravity value computed on the
 AE2444.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2444.degrees latitude (g = 980.6199 gals.).
 AE2444
 AE2444.The modeled gravity was interpolated from observed gravity values.
 AE2444
 AE2444. The following values were computed from the NAD 83(2011) position.
 AE2444
 AE2444;                    North         East     Units Scale Factor Converg.
 AE2444;SPC MD       -   201,479.702   439,625.187   MT  1.00000553   +0 17 20.6
 AE2444;SPC MD       -   661,021.32  1,442,336.97   sFT  1.00000553   +0 17 20.6
 AE2444;UTM  18      - 4,371,261.277   367,600.793   MT  0.99981583   -0 58 44.2
 AE2444
 AE2444!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2444!SPC MD       -   0.99998645  x   1.00000553  =   0.99999198
 AE2444!UTM  18      -   0.99998645  x   0.99981583  =   0.99980228
 AE2444
 AE2444:                Primary Azimuth Mark                     Grid Az
 AE2444:SPC MD       -  GIS 76                                   092 19 36.4
 AE2444:UTM  18      -  GIS 76                                   093 35 41.2
 AE2444
 AE2444_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6760071261(NAD 83)
 AE2444
 AE2444|---------------------------------------------------------------------|
 AE2444| PID    Reference Object                     Distance      Geod. Az  |
 AE2444|                                                           dddmmss.s |
 AE2444| AE2443 GIS 76                              APPROX. 0.8 KM 0923657.0 |
 AE2444|---------------------------------------------------------------------|
 AE2444
 AE2444                          SUPERSEDED SURVEY CONTROL
 AE2444
 AE2444  NAD 83(2007)-  39 28 50.76761(N)    076 32 21.98963(W) AD(2002.00) 0
 AE2444  ELLIP H (02/10/07)   86.374  (m)                       GP(2002.00)    
 AE2444  ELLIP H (08/30/02)   86.376  (m)                       GP(       ) 4 2
 AE2444  NAD 83(1991)-  39 28 50.76732(N)    076 32 21.98966(W) AD(       ) 1
 AE2444  ELLIP H (08/28/97)   86.360  (m)                       GP(       ) 3 2
 AE2444  NAVD 88             118.94   (m)          390.2    (f) LEVELING    3  
 AE2444  NAVD 88 (08/28/97)  118.9    (m)  GEOID96  model used  GPS OBS        
 AE2444
 AE2444.Superseded values are not recommended for survey control.
 AE2444
 AE2444.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2444.See file dsdata.pdf to determine how the superseded data were derived.
 AE2444
 AE2444_MARKER: DD = SURVEY DISK
 AE2444_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2444_STAMPING: NO. GIS-77 1995
 AE2444_MARK LOGO: MD-005
 AE2444_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2444_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2444+STABILITY: SURFACE MOTION
 AE2444_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2444+SATELLITE: SATELLITE OBSERVATIONS - November 11, 2009
 AE2444
 AE2444  HISTORY     - Date     Condition        Report By
 AE2444  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2444  HISTORY     - 19960201 GOOD             MCCRON
 AE2444  HISTORY     - 19970702 GOOD             MD-005
 AE2444  HISTORY     - 20030114 GOOD             INDIV
 AE2444  HISTORY     - 20091111 GOOD             GPSSS
 AE2444
 AE2444                          STATION DESCRIPTION
 AE2444
 AE2444'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2444'STATION IS LOCATED ABOUNT 13 MI (20.92 KM) NORTH OF BALTIMORE AND
 AE2444'ABOUT 5.5 MI (8.85 KM) EAST OF COCKEYSVILLE. TO REACH THE STATION FROM
 AE2444'DULANEY VALLEY ROAD (ROUTE 146) OVERPASS OVER I-695 (BELTWAY) GO NORTH
 AE2444'ON DULANEY VALLEY ROAD FOR 4.15 MI (6.68 KM) TO THE INTERSECTION WITH
 AE2444'JARRETTSVILLE PIKE, BEAR RIGHT AND CONTINUE ON DULANEY VALLEY ROAD FOR
 AE2444'1.7 MI (2.74 KM) TO THE INTERSECTION WITH LOCH RAVEN DRIVE, BEAR LEFT
 AE2444'AND CONTINUE ON DULANEY VALLEY ROAD FOR 0.85 MI (1.37 KM) TO DANCE
 AE2444'MILL ROAD.  TURN LEFT ON DANCE MILL ROAD AND GO NORTHWEST FOR 0.45 MI
 AE2444'(0.72 KM) TO THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP
 AE2444'OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT
 AE2444'IS ABOUT 47 FT (14.33 M) SOUTHEAST FROM THE CENTERLINE OF A TAR AND
 AE2444'CHIP LANE LEADING TO HOUSE NO. 3930, 15.87 FT (4.84 M) NORTHEAST FROM
 AE2444'THE CENTERLINE OF DANCE MILL ROAD, 51.91 FT (15.82 M) NORTHWEST FROM
 AE2444'POWER POLE NO. 821099, AND 45.95 FEET WEST OF POWER POLE NO. 130522.
 AE2444
 AE2444                          STATION RECOVERY (1996)
 AE2444
 AE2444'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2444'STATION IS LOCATED ABOUNT 13 MI (20.9 KM) NORTH OF BALTIMORE AND ABOUT
 AE2444'5.5 MI (8.9 KM) EAST OF COCKEYSVILLE.  TO REACH THE STATION FROM
 AE2444'DULANEY VALLEY ROAD (ROUTE 146) OVERPASS OVER I-695 (BELTWAY) GO NORTH
 AE2444'ON DULANEY VALLEY ROAD FOR 4.15 MI (6.68 KM) TO THE INTERSECTION WITH
 AE2444'JARRETTSVILLE PIKE, BEAR RIGHT AND CONTINUE ON DULANEY VALLEY ROAD FOR
 AE2444'1.7 MI (2.7 KM) TO THE INTERSECTION WITH LOCH RAVEN DRIVE, BEAR LEFT
 AE2444'AND CONTINUE ON DULANEY VALLEY ROAD FOR 0.85 MI (1.37 KM) TO DANCE
 AE2444'MILL ROAD.  TURN LEFT ON DANCE MILL ROAD AND GO NORTHWEST FOR 0.45 MI
 AE2444'(0.72 KM) TO THE STATION ON THE RIGHT.  STATION MARK IS SET IN THE TOP
 AE2444'OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT
 AE2444'IS ABOUT 47 FT (14.3 M) SOUTHEAST FROM THE CENTERLINE OF A TAR AND
 AE2444'CHIP LANE LEADING TO HOUSE NO.  3930, 15.87 FT (4.84 M) NORTHEAST FROM
 AE2444'THE CENTERLINE OF DANCE MILL ROAD, 51.91 FT (15.82 M) NORTHWEST FROM
 AE2444'POWER POLE NO.  821099, AND 45.95 FEET (14.01 M) WEST OF POWER POLE
 AE2444'NO.  130522.
 AE2444
 AE2444                          STATION RECOVERY (1997)
 AE2444
 AE2444'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AE2444'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AE2444'1997.
 AE2444
 AE2444                          STATION RECOVERY (2003)
 AE2444
 AE2444'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (RDS)
 AE2444'RECOVERED AS DESCRIBED BY CENTURY ENGINEERING, INC.
 AE2444
 AE2444                          STATION RECOVERY (2009)
 AE2444
 AE2444'RECOVERY NOTE BY GPS SALES AND SERVICES 2009 (KAH)
 AE2444'RECOVERED BY KEITH HEINDEL, PLS OF PROFESSIONAL SURVEYS, LLC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2463 ***********************************************************************
 AE2463  HT_MOD      -  This is a Height Modernization Survey Station.
 AE2463  DESIGNATION -  GIS 78
 AE2463  PID         -  AE2463
 AE2463  STATE/COUNTY-  MD/BALTIMORE
 AE2463  COUNTRY     -  US
 AE2463  USGS QUAD   -  TOWSON (2016)
 AE2463
 AE2463                         *CURRENT SURVEY CONTROL
 AE2463  ______________________________________________________________________
 AE2463* NAD 83(2011) POSITION- 39 27 43.92690(N) 076 34 56.61544(W)   ADJUSTED
 AE2463* NAD 83(2011) ELLIP HT-    48.168 (meters)        (06/27/12)   ADJUSTED
 AE2463* NAD 83(2011) EPOCH   -  2010.00
 AE2463* NAVD 88 ORTHO HEIGHT -    80.71  (meters)      264.8   (feet) GPS OBS
 AE2463  ______________________________________________________________________
 AE2463  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AE2463  GEOID HEIGHT    -        -32.536 (meters)                     GEOID99
 AE2463  GEOID HEIGHT    -        -32.534 (meters)                     GEOID18
 AE2463  NAD 83(2011) X  -  1,144,202.311 (meters)                     COMP
 AE2463  NAD 83(2011) Y  - -4,796,320.214 (meters)                     COMP
 AE2463  NAD 83(2011) Z  -  4,032,095.115 (meters)                     COMP
 AE2463  LAPLACE CORR    -         -4.18  (seconds)                    DEFLEC18
 AE2463
 AE2463  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2463  Standards:
 AE2463         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2463            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2463  -------------------------------------------------------------------
 AE2463  NETWORK    0.60   1.00           0.27   0.21   0.51      0.01038111
 AE2463  -------------------------------------------------------------------
 AE2463  Click here for local accuracies and other accuracy information.
 AE2463
 AE2463.The horizontal coordinates were established by GPS observations
 AE2463.and adjusted by the National Geodetic Survey in June 2012.
 AE2463
 AE2463.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2463.been affixed to the stable North American tectonic plate. See 
 AE2463.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2463
 AE2463.The horizontal coordinates are valid at the epoch date displayed above
 AE2463.which is a decimal equivalence of Year/Month/Day.
 AE2463
 AE2463.The orthometric height was determined by GPS observations and a
 AE2463.high-resolution geoid model using precise GPS observation and
 AE2463.processing techniques.
 AE2463
 AE2463.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2463.GEOID18 height accuracy estimate available here.
 AE2463
 AE2463.Click photographs - Photos may exist for this station.
 AE2463
 AE2463.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2463
 AE2463.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2463
 AE2463.The ellipsoidal height was determined by GPS observations
 AE2463.and is referenced to NAD 83.
 AE2463
 AE2463. The following values were computed from the NAD 83(2011) position.
 AE2463
 AE2463;                    North         East     Units Scale Factor Converg.
 AE2463;SPC MD       -   199,400.570   435,939.191   MT  1.00000216   +0 15 43.6
 AE2463;SPC MD       -   654,200.04  1,430,243.83   sFT  1.00000216   +0 15 43.6
 AE2463;UTM  18      - 4,369,264.585   363,870.369   MT  0.99982816   -1 00 21.1
 AE2463
 AE2463!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2463!SPC MD       -   0.99999244  x   1.00000216  =   0.99999460
 AE2463!UTM  18      -   0.99999244  x   0.99982816  =   0.99982060
 AE2463
 AE2463_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6387069264(NAD 83)
 AE2463
 AE2463|---------------------------------------------------------------------|
 AE2463| PID    Reference Object                     Distance      Geod. Az  |
 AE2463|                                                           dddmmss.s |
 AE2463| AE2468 GIS 80                              366.246 METERS 06614     |
 AE2463|---------------------------------------------------------------------|
 AE2463
 AE2463                          SUPERSEDED SURVEY CONTROL
 AE2463
 AE2463  NAD 83(2007)-  39 27 43.92708(N)    076 34 56.61611(W) AD(2002.00) 0
 AE2463  ELLIP H (02/10/07)   48.186  (m)                       GP(2002.00)    
 AE2463  ELLIP H (08/30/02)   48.191  (m)                       GP(       ) 4 2
 AE2463  NAD 83(1991)-  39 27 43.92713(N)    076 34 56.61609(W) AD(       ) 1
 AE2463  ELLIP H (08/28/97)   48.165  (m)                       GP(       ) 3 2
 AE2463  NAVD 88 (08/28/97)   80.7    (m)  GEOID96  model used  GPS OBS        
 AE2463
 AE2463.Superseded values are not recommended for survey control.
 AE2463
 AE2463.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2463.See file dsdata.pdf to determine how the superseded data were derived.
 AE2463
 AE2463_MARKER: DD = SURVEY DISK
 AE2463_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2463_STAMPING: NO. GIS-78 1995
 AE2463_MARK LOGO: MD-005
 AE2463_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2463_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2463+STABILITY: SURFACE MOTION
 AE2463_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2463+SATELLITE: SATELLITE OBSERVATIONS - November 11, 2009
 AE2463
 AE2463  HISTORY     - Date     Condition        Report By
 AE2463  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2463  HISTORY     - 19970702 GOOD             MD-005
 AE2463  HISTORY     - 20030402 GOOD             DMW
 AE2463  HISTORY     - 20091111 GOOD             GPSSS
 AE2463
 AE2463                          STATION DESCRIPTION
 AE2463
 AE2463'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2463'STATION IS LOCTED ABOUT 3.0 MI (4.83 KM) NORTHWEST OF TIMONIUM.
 AE2463'STATION IS LOCTED AT THE WEST END OF THE DULANEY VALLEY ROAD BRIDGE
 AE2463'OVER THE LOCH RAVEN RESERVOIR. STATION MARK IS SET IN THE TOP OF A 10
 AE2463'IN DIAMTERE CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS ON THE
 AE2463'SOUTH SIDE OF THE BRIDGE, 11.54 FT (3.52 M) SOUTHEAST OF THE WEST END
 AE2463'OF A CONCRETE RETAINING WALL AND 21.7 FT (6.61 M) SOUTHWEST OF THE
 AE2463'EAST CORNER OF THE RETAINING WALL.
 AE2463
 AE2463                          STATION RECOVERY (1997)
 AE2463
 AE2463'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AE2463'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AE2463'1997.
 AE2463
 AE2463                          STATION RECOVERY (2003)
 AE2463
 AE2463'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (DMM)
 AE2463'RECOVERED IN GOOD CONDITION.
 AE2463
 AE2463                          STATION RECOVERY (2009)
 AE2463
 AE2463'RECOVERY NOTE BY GPS SALES AND SERVICES 2009 (KAH)
 AE2463'RECOVERED BY KEITH HEINDEL, PLS OF PROFESSIONAL SURVEYS, LLC
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2462 ***********************************************************************
 AE2462  DESIGNATION -  GIS 79
 AE2462  PID         -  AE2462
 AE2462  STATE/COUNTY-  MD/BALTIMORE
 AE2462  COUNTRY     -  US
 AE2462  USGS QUAD   -  TOWSON (2016)
 AE2462
 AE2462                         *CURRENT SURVEY CONTROL
 AE2462  ______________________________________________________________________
 AE2462* NAD 83(2011) POSITION- 39 27 41.08574(N) 076 33 26.30850(W)   ADJUSTED
 AE2462* NAD 83(2011) ELLIP HT-    45.018 (meters)        (06/27/12)   ADJUSTED
 AE2462* NAD 83(2011) EPOCH   -  2010.00
 AE2462* NAVD 88 ORTHO HEIGHT -    77.6   (meters)      255.    (feet) GPS OBS
 AE2462  ______________________________________________________________________
 AE2462  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE2462  GEOID HEIGHT    -        -32.593 (meters)                     GEOID96
 AE2462  GEOID HEIGHT    -        -32.583 (meters)                     GEOID18
 AE2462  NAD 83(2011) X  -  1,146,314.509 (meters)                     COMP
 AE2462  NAD 83(2011) Y  - -4,795,870.597 (meters)                     COMP
 AE2462  NAD 83(2011) Z  -  4,032,025.465 (meters)                     COMP
 AE2462  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 AE2462
 AE2462  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2462  Standards:
 AE2462         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2462            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2462  -------------------------------------------------------------------
 AE2462  NETWORK    0.91   1.69           0.40   0.33   0.86      0.28545482
 AE2462  -------------------------------------------------------------------
 AE2462  Click here for local accuracies and other accuracy information.
 AE2462
 AE2462.The horizontal coordinates were established by GPS observations
 AE2462.and adjusted by the National Geodetic Survey in June 2012.
 AE2462
 AE2462.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2462.been affixed to the stable North American tectonic plate. See 
 AE2462.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2462
 AE2462.The horizontal coordinates are valid at the epoch date displayed above
 AE2462.which is a decimal equivalence of Year/Month/Day.
 AE2462
 AE2462.The orthometric height was determined by GPS observations and a
 AE2462.high-resolution geoid model.
 AE2462
 AE2462.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2462.GEOID18 height accuracy estimate available here.
 AE2462
 AE2462.Click photographs - Photos may exist for this station.
 AE2462
 AE2462.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2462
 AE2462.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2462
 AE2462.The ellipsoidal height was determined by GPS observations
 AE2462.and is referenced to NAD 83.
 AE2462
 AE2462. The following values were computed from the NAD 83(2011) position.
 AE2462
 AE2462;                    North         East     Units Scale Factor Converg.
 AE2462;SPC MD       -   199,323.122   438,098.433   MT  1.00000202   +0 16 40.3
 AE2462;SPC MD       -   653,945.94  1,437,327.94   sFT  1.00000202   +0 16 40.3
 AE2462;UTM  18      - 4,369,139.401   366,026.987   MT  0.99982099   -0 59 23.7
 AE2462
 AE2462!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2462!SPC MD       -   0.99999294  x   1.00000202  =   0.99999496
 AE2462!UTM  18      -   0.99999294  x   0.99982099  =   0.99981393
 AE2462
 AE2462_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6602669139(NAD 83)
 AE2462
 AE2462                          SUPERSEDED SURVEY CONTROL
 AE2462
 AE2462  NAD 83(2007)-  39 27 41.08593(N)    076 33 26.30916(W) AD(2002.00) 0
 AE2462  ELLIP H (02/10/07)   45.036  (m)                       GP(2002.00)    
 AE2462  ELLIP H (08/30/02)   45.035  (m)                       GP(       ) 4 2
 AE2462  NAD 83(1991)-  39 27 41.08594(N)    076 33 26.30916(W) AD(       ) 1
 AE2462  ELLIP H (08/28/97)   45.023  (m)                       GP(       ) 3 2
 AE2462
 AE2462.Superseded values are not recommended for survey control.
 AE2462
 AE2462.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2462.See file dsdata.pdf to determine how the superseded data were derived.
 AE2462
 AE2462_MARKER: DD = SURVEY DISK
 AE2462_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2462_STAMPING: NO. GIS-79 1995
 AE2462_MARK LOGO: MD-005
 AE2462_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2462_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2462+STABILITY: SURFACE MOTION
 AE2462_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2462+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AE2462
 AE2462  HISTORY     - Date     Condition        Report By
 AE2462  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2462
 AE2462                          STATION DESCRIPTION
 AE2462
 AE2462'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2462'STATION IS LOCATED ABOUT 4.0 MI (6.44 KM) NORTHEAST OF TIMONIUM. TO
 AE2462'REACH STATION FROM THE INTERSECTION OF DULANEY VALLEY ROAD AND
 AE2462'JARRETSVILLE PIKE, GO EAST ON DULANEY VALLEY ROAD FOR 1.05 MI (1.69
 AE2462'KM) TO THE INTERSECTION WITH A PAVED ENTRANCE TO THE RIGHT LEADING TO
 AE2462'THE LOCH RAVEN SKEET AND GUN CLUB. TURN RIGHT AND GO SOUTH ON THE
 AE2462'PAVED LANE FOR 0.4 MI (0.64 KM) TO THE SHOOTING RANGE AND THE STATION
 AE2462'ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AE2462'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 30.0 FT (9.14 M)
 AE2462'NORTHEAST OF THE LANE, 109 FT (33.22 M) SOUTHEAST OF A 24 IN POPLAR
 AE2462'TREE, 91.7 FT (27.95 M) SOUTHWEST OF POWER POLE NO.229393 AND 69.3 FT
 AE2462'(21.12 M) NORTHWEST OF A 24 IN PINE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7691 ***********************************************************************
 AC7691  DESIGNATION -  GIS 8
 AC7691  PID         -  AC7691
 AC7691  STATE/COUNTY-  MD/BALTIMORE
 AC7691  COUNTRY     -  US
 AC7691  USGS QUAD   -  MIDDLE RIVER (2016)
 AC7691
 AC7691                         *CURRENT SURVEY CONTROL
 AC7691  ______________________________________________________________________
 AC7691* NAD 83(2011) POSITION- 39 17 43.69425(N) 076 24 22.73108(W)   ADJUSTED
 AC7691* NAD 83(2011) ELLIP HT-   -24.140 (meters)        (06/27/12)   ADJUSTED
 AC7691* NAD 83(2011) EPOCH   -  2010.00
 AC7691* NAVD 88 ORTHO HEIGHT -     8.912 (meters)       29.24  (feet) ADJUSTED
 AC7691  ______________________________________________________________________
 AC7691  GEOID HEIGHT    -        -33.051 (meters)                     GEOID18
 AC7691  NAD 83(2011) X  -  1,161,683.898 (meters)                     COMP
 AC7691  NAD 83(2011) Y  - -4,804,142.144 (meters)                     COMP
 AC7691  NAD 83(2011) Z  -  4,017,740.837 (meters)                     COMP
 AC7691  LAPLACE CORR    -         -2.09  (seconds)                    DEFLEC18
 AC7691  DYNAMIC HEIGHT  -          8.907 (meters)       29.22  (feet) COMP
 AC7691  MODELED GRAVITY -    980,112.4   (mgal)                       NAVD 88
 AC7691
 AC7691  VERT ORDER      -  THIRD
 AC7691
 AC7691  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7691  Standards:
 AC7691         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7691            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7691  -------------------------------------------------------------------
 AC7691  NETWORK    0.68   1.67           0.32   0.22   0.85     -0.03741357
 AC7691  -------------------------------------------------------------------
 AC7691  Click here for local accuracies and other accuracy information.
 AC7691
 AC7691.The horizontal coordinates were established by GPS observations
 AC7691.and adjusted by the National Geodetic Survey in June 2012.
 AC7691
 AC7691.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7691.been affixed to the stable North American tectonic plate. See 
 AC7691.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7691
 AC7691.The horizontal coordinates are valid at the epoch date displayed above
 AC7691.which is a decimal equivalence of Year/Month/Day.
 AC7691
 AC7691.The orthometric height was determined by differential leveling and
 AC7691.adjusted by the NATIONAL GEODETIC SURVEY
 AC7691.in February 1998.
 AC7691
 AC7691.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7691.GEOID18 height accuracy estimate available here.
 AC7691
 AC7691.Click photographs - Photos may exist for this station.
 AC7691
 AC7691.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7691
 AC7691.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7691
 AC7691.The ellipsoidal height was determined by GPS observations
 AC7691.and is referenced to NAD 83.
 AC7691
 AC7691.The dynamic height is computed by dividing the NAVD 88
 AC7691.geopotential number by the normal gravity value computed on the
 AC7691.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7691.degrees latitude (g = 980.6199 gals.).
 AC7691
 AC7691.The modeled gravity was interpolated from observed gravity values.
 AC7691
 AC7691. The following values were computed from the NAD 83(2011) position.
 AC7691
 AC7691;                    North         East     Units Scale Factor Converg.
 AC7691;SPC MD       -   180,974.144   451,212.726   MT  0.99997662   +0 22 21.4
 AC7691;SPC MD       -   593,746.00  1,480,353.75   sFT  0.99997662   +0 22 21.4
 AC7691;UTM  18      - 4,350,508.764   378,730.447   MT  0.99978107   -0 53 26.7
 AC7691
 AC7691!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7691!SPC MD       -   1.00000379  x   0.99997662  =   0.99998041
 AC7691!UTM  18      -   1.00000379  x   0.99978107  =   0.99978486
 AC7691
 AC7691_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7873050508(NAD 83)
 AC7691
 AC7691                          SUPERSEDED SURVEY CONTROL
 AC7691
 AC7691  NAD 83(2007)-  39 17 43.69451(N)    076 24 22.73185(W) AD(2002.00) 0
 AC7691  ELLIP H (02/10/07)  -24.122  (m)                       GP(2002.00)    
 AC7691  ELLIP H (08/30/02)  -24.104  (m)                       GP(       ) 4 2
 AC7691  NAD 83(1991)-  39 17 43.69416(N)    076 24 22.73140(W) AD(       ) 1
 AC7691  ELLIP H (04/08/97)  -24.179  (m)                       GP(       ) 3 1
 AC7691  NAVD 88 (04/08/97)    8.9    (m)  GEOID93  model used  GPS OBS        
 AC7691
 AC7691.Superseded values are not recommended for survey control.
 AC7691
 AC7691.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7691.See file dsdata.pdf to determine how the superseded data were derived.
 AC7691
 AC7691_MARKER: DD = SURVEY DISK
 AC7691_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7691_STAMPING: NO. GIS-8 1995
 AC7691_MARK LOGO: MD-005
 AC7691_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7691_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7691+STABILITY: SURFACE MOTION
 AC7691_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7691+SATELLITE: SATELLITE OBSERVATIONS - May 12, 2017
 AC7691
 AC7691  HISTORY     - Date     Condition        Report By
 AC7691  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7691  HISTORY     - 20020903 GOOD             DMW
 AC7691  HISTORY     - 20060414 GOOD             GPSSS
 AC7691  HISTORY     - 20121006 GOOD             USPSQD
 AC7691  HISTORY     - 20130524 GOOD             GPSSS
 AC7691  HISTORY     - 20170512 GOOD             WRA
 AC7691
 AC7691                          STATION DESCRIPTION
 AC7691
 AC7691'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7691'STATION IS LOCATED ABOUT 9.5 MI (15.3 KM) EAST OF THE CENTER OF
 AC7691'BALTIMORE AND ABOUT 3.5 MI (5.6 KM) EAST OF ESSEX AT ROCKAWAY BEACH
 AC7691'(TURKEY POINT). TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO
 AC7691'ROUTE 702 (SOUTHEAST BLVD). FROM THE RT 702 OVERPASS OVER EASTERN BLVD
 AC7691'GO SOUTH ON RT 702 FOR 2.15 MI (3.46 KM) TO TURKEY POINT ROAD. TURN
 AC7691'LEFT ON TURKEY POINT ROAD AND GO 0.10 MI (0.16 KM) TO THE INTERSECTION
 AC7691'WITH BACK RIVER NECK ROAD. CROSS BACK RIVER NECK ROAD AND CONTINUE ON
 AC7691'TURKEY POINT ROAD FOR 1.35 MI (2.17 KM) TO GREYHOUND ROAD. TURN LEFT
 AC7691'ON GREYHOUND ROAD AND GO 0.1 MI (0.2 KM) TO THE INTERSECTION WITH
 AC7691'TICKWOOD ROAD AND STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP
 AC7691'OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AC7691'24.73 FT (7.54 M) SOUTHEAST OF THE CENTERLINE OF TICKWOOD ROAD, 21.05
 AC7691'FT (6.42 M) NORTHEAST OF THE CENTRELINE OF GREYHOUND ROAD, 7.1 FT (2.2
 AC7691'M) SOUTHEAST OF A WATER METER, 6.88 FT (2.10 M) SOUTHEAST OF THE
 AC7691'WESTERNMOST END OF A ROW OF WOODEN POSTS WITH CABLE, 49.85 FT (15.19
 AC7691'M) EAST OF POWER POLE NO. 64228 AND 93.2 FT (28.4 M) NORTH OF POWER
 AC7691'POLE NO. 64227.
 AC7691
 AC7691                          STATION RECOVERY (2002)
 AC7691
 AC7691'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (RSW)
 AC7691'RECOVERED IN GOOD CONDITION.
 AC7691
 AC7691                          STATION RECOVERY (2006)
 AC7691
 AC7691'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (BD)
 AC7691'RECOVERED BY BRIAN DIETZ, PLS
 AC7691
 AC7691                          STATION RECOVERY (2012)
 AC7691
 AC7691'RECOVERY NOTE BY US POWER SQUADRON 2012
 AC7691'RECOVERED IN GOOD CONDITION.
 AC7691
 AC7691                          STATION RECOVERY (2013)
 AC7691
 AC7691'RECOVERY NOTE BY GPS SALES AND SERVICES 2013
 AC7691'RECOVERED BY TOM AND JOEL OF SURVEY SERVICES OF MD, LLC
 AC7691
 AC7691                          STATION RECOVERY (2017)
 AC7691
 AC7691'RECOVERY NOTE BY WHIGMAN AND REQUARDT ASSOCIATES 2017 (WRA)
 AC7691'RECOVERED AS DESCRIBED
 AC7691'DESCRIPTION IS ADEQUATE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6421 ***********************************************************************
 DG6421  DESIGNATION -  GIS 8
 DG6421  PID         -  DG6421
 DG6421  STATE/COUNTY-  MD/TALBOT
 DG6421  COUNTRY     -  US
 DG6421  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6421
 DG6421                         *CURRENT SURVEY CONTROL
 DG6421  ______________________________________________________________________
 DG6421* NAD 83(1986) POSITION- 38 46 58.86   (N) 076 13 06.74   (W)   HD_HELD1
 DG6421* NAVD 88 ORTHO HEIGHT -     1.157 (meters)        3.80  (feet) ADJUSTED
 DG6421  ______________________________________________________________________
 DG6421  GEOID HEIGHT    -        -34.350 (meters)                     GEOID18
 DG6421  DYNAMIC HEIGHT  -          1.156 (meters)        3.79  (feet) COMP
 DG6421  MODELED GRAVITY -    980,044.9   (mgal)                       NAVD 88
 DG6421
 DG6421  VERT ORDER      -  SECOND    CLASS I
 DG6421
 DG6421.The horizontal coordinates were determined by differentially corrected
 DG6421.hand held GPS observations or other comparable positioning techniques
 DG6421.and have an estimated accuracy of +/- 3 meters.
 DG6421
 DG6421.The orthometric height was determined by differential leveling and
 DG6421.adjusted by the NATIONAL GEODETIC SURVEY
 DG6421.in September 2004.
 DG6421
 DG6421.No vertical observational check was made to the station.
 DG6421
 DG6421.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6421.GEOID18 height accuracy estimate available here.
 DG6421
 DG6421.Click photographs - Photos may exist for this station.
 DG6421
 DG6421.The dynamic height is computed by dividing the NAVD 88
 DG6421.geopotential number by the normal gravity value computed on the
 DG6421.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6421.degrees latitude (g = 980.6199 gals.).
 DG6421
 DG6421.The modeled gravity was interpolated from observed gravity values.
 DG6421
 DG6421;                    North         East    Units  Estimated Accuracy
 DG6421;SPC MD       -   124,210.0     467,897.3     MT  (+/- 3 meters HH1 GPS) 
 DG6421
 DG6421_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9416193403(NAD 83)
 DG6421
 DG6421                          SUPERSEDED SURVEY CONTROL
 DG6421
 DG6421.No superseded survey control is available for this station.
 DG6421
 DG6421_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6421_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6421_STAMPING: NO GIS 8 1995
 DG6421_MARK LOGO: MD1370
 DG6421_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6421_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6421+STABILITY: SURFACE MOTION
 DG6421_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6421+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6421
 DG6421  HISTORY     - Date     Condition        Report By
 DG6421  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6421  HISTORY     - 19991213 GOOD             MDSHA
 DG6421  HISTORY     - 20060328 GOOD             USPSQD
 DG6421
 DG6421                          STATION DESCRIPTION
 DG6421
 DG6421'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6421'THE MARK IS LOCATED IN THE TOWN OF ST. MICHAELS.  TO REACH THE MARK
 DG6421'FROM THE POST OFFICE IN SAINT MICHAELS, PROCEED SOUTHEAST ALONG
 DG6421'MARYLAND STATE HIGHWAY 33 FOR 0.15 MILES (0.24 KM) TO EAST CHEW
 DG6421'AVENUE.  TURN LEFT AND PROCEED NORTHEAST ALONG EAST CHEW AVENUE FOR
 DG6421'0.2 MILES (0.3 KM) TO MEADOW STREET AND THE MARK ON THE RIGHT.  IT IS
 DG6421'41.5 FEET (12.6 M) SOUTHEAST OF THE CENTER LINE OF EAST CHEW STREET,
 DG6421'25.5 FEET (7.8 M) SOUTHWEST OF THE CENTER OF MEADOW AVENUE, 29.5 FEET
 DG6421'(9.0 M) SOUTHEAST OF A FIRE HYDRANT, 71.5 FEET (21.8 M) NORTH AND
 DG6421'ACROSS MEADOW STREET FROM POWER POLE NUMBER 29311-08513 AND 41.5 FEET
 DG6421'(12.6 M) NORTHEAST OF THE NORTH CORNER OF HOUSE NUMBER 216.  IT IS A
 DG6421'TOSM DISK SET IN THE TOP OF A 7 INCH (18 CM) ROUND CONCRETE MONUMENT
 DG6421'FLUSH WITH THE GROUND.
 DG6421
 DG6421                          STATION RECOVERY (2006)
 DG6421
 DG6421'RECOVERY NOTE BY US POWER SQUADRON 2006
 DG6421'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2468 ***********************************************************************
 AE2468  DESIGNATION -  GIS 80
 AE2468  PID         -  AE2468
 AE2468  STATE/COUNTY-  MD/BALTIMORE
 AE2468  COUNTRY     -  US
 AE2468  USGS QUAD   -  TOWSON (2016)
 AE2468
 AE2468                         *CURRENT SURVEY CONTROL
 AE2468  ______________________________________________________________________
 AE2468* NAD 83(2011) POSITION- 39 27 48.71275(N) 076 34 42.59395(W)   ADJUSTED
 AE2468* NAD 83(2011) ELLIP HT-    48.561 (meters)        (06/27/12)   ADJUSTED
 AE2468* NAD 83(2011) EPOCH   -  2010.00
 AE2468* NAVD 88 ORTHO HEIGHT -    81.1   (meters)      266.    (feet) GPS OBS
 AE2468  ______________________________________________________________________
 AE2468  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE2468  GEOID HEIGHT    -        -32.550 (meters)                     GEOID96
 AE2468  GEOID HEIGHT    -        -32.539 (meters)                     GEOID18
 AE2468  NAD 83(2011) X  -  1,144,506.650 (meters)                     COMP
 AE2468  NAD 83(2011) Y  - -4,796,151.469 (meters)                     COMP
 AE2468  NAD 83(2011) Z  -  4,032,209.315 (meters)                     COMP
 AE2468  LAPLACE CORR    -         -4.03  (seconds)                    DEFLEC18
 AE2468
 AE2468  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2468  Standards:
 AE2468         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2468            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2468  -------------------------------------------------------------------
 AE2468  NETWORK    0.58   1.02           0.26   0.21   0.52      0.03124647
 AE2468  -------------------------------------------------------------------
 AE2468  Click here for local accuracies and other accuracy information.
 AE2468
 AE2468.The horizontal coordinates were established by GPS observations
 AE2468.and adjusted by the National Geodetic Survey in June 2012.
 AE2468
 AE2468.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2468.been affixed to the stable North American tectonic plate. See 
 AE2468.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2468
 AE2468.The horizontal coordinates are valid at the epoch date displayed above
 AE2468.which is a decimal equivalence of Year/Month/Day.
 AE2468
 AE2468.The orthometric height was determined by GPS observations and a
 AE2468.high-resolution geoid model.
 AE2468
 AE2468.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2468.GEOID18 height accuracy estimate available here.
 AE2468
 AE2468.Click photographs - Photos may exist for this station.
 AE2468
 AE2468.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2468
 AE2468.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2468
 AE2468.The ellipsoidal height was determined by GPS observations
 AE2468.and is referenced to NAD 83.
 AE2468
 AE2468. The following values were computed from the NAD 83(2011) position.
 AE2468
 AE2468;                    North         East     Units Scale Factor Converg.
 AE2468;SPC MD       -   199,549.706   436,273.698   MT  1.00000240   +0 15 52.4
 AE2468;SPC MD       -   654,689.33  1,431,341.29   sFT  1.00000240   +0 15 52.4
 AE2468;UTM  18      - 4,369,406.256   364,208.035   MT  0.99982703   -1 00 12.3
 AE2468
 AE2468!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2468!SPC MD       -   0.99999238  x   1.00000240  =   0.99999478
 AE2468!UTM  18      -   0.99999238  x   0.99982703  =   0.99981941
 AE2468
 AE2468_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6420869406(NAD 83)
 AE2468
 AE2468|---------------------------------------------------------------------|
 AE2468| PID    Reference Object                     Distance      Geod. Az  |
 AE2468|                                                           dddmmss.s |
 AE2468| AE2463 GIS 78                              366.246 METERS 24614     |
 AE2468|---------------------------------------------------------------------|
 AE2468
 AE2468                          SUPERSEDED SURVEY CONTROL
 AE2468
 AE2468  NAD 83(2007)-  39 27 48.71294(N)    076 34 42.59462(W) AD(2002.00) 0
 AE2468  ELLIP H (02/10/07)   48.579  (m)                       GP(2002.00)    
 AE2468  ELLIP H (08/30/02)   48.582  (m)                       GP(       ) 4 2
 AE2468  NAD 83(1991)-  39 27 48.71302(N)    076 34 42.59460(W) AD(       ) 1
 AE2468  ELLIP H (08/28/97)   48.558  (m)                       GP(       ) 3 2
 AE2468
 AE2468.Superseded values are not recommended for survey control.
 AE2468
 AE2468.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2468.See file dsdata.pdf to determine how the superseded data were derived.
 AE2468
 AE2468_MARKER: DD = SURVEY DISK
 AE2468_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2468_STAMPING: NO. GIS-80
 AE2468_MARK LOGO: MD-005
 AE2468_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2468_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2468+STABILITY: SURFACE MOTION
 AE2468_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2468+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AE2468
 AE2468  HISTORY     - Date     Condition        Report By
 AE2468  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2468
 AE2468                          STATION DESCRIPTION
 AE2468
 AE2468'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2468'STATION IS LOCATED ABOUT 3.0 MI (4.83 KM) NORTHWEST OF TIMONIUM.
 AE2468'STATION IS LOCATED ON THE EAST SIDE OF THE DULANEY VALLEY ROAD BRIDGE
 AE2468'OVER THE LOCH RAVEN RESERVOIR. STATION MARK IS SET IN THE TOP OF A 10
 AE2468'INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS ON
 AE2468'THE NORTH SIDE OF THE BRIDGE, 37.60 FT (11.46 M) NORTHEAST OF THE
 AE2468'NORTHWEST CORNER OF THE BRIDGE ABUTMENT AND 29.8 FT (9.08 M) NORTH OF
 AE2468'THE NORTHEAST CORNER OF THE BRIDGE ABUTMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2459 ***********************************************************************
 AE2459  HT_MOD      -  This is a Height Modernization Survey Station.
 AE2459  DESIGNATION -  GIS 81
 AE2459  PID         -  AE2459
 AE2459  STATE/COUNTY-  MD/BALTIMORE
 AE2459  COUNTRY     -  US
 AE2459  USGS QUAD   -  COCKEYSVILLE (2016)
 AE2459
 AE2459                         *CURRENT SURVEY CONTROL
 AE2459  ______________________________________________________________________
 AE2459* NAD 83(2011) POSITION- 39 28 42.50860(N) 076 39 53.03298(W)   ADJUSTED
 AE2459* NAD 83(2011) ELLIP HT-    65.001 (meters)        (06/27/12)   ADJUSTED
 AE2459* NAD 83(2011) EPOCH   -  2010.00
 AE2459* NAVD 88 ORTHO HEIGHT -    97.37  (meters)      319.5   (feet) GPS OBS
 AE2459  ______________________________________________________________________
 AE2459  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AE2459  GEOID HEIGHT    -        -32.356 (meters)                     GEOID99
 AE2459  GEOID HEIGHT    -        -32.350 (meters)                     GEOID18
 AE2459  NAD 83(2011) X  -  1,137,046.575 (meters)                     COMP
 AE2459  NAD 83(2011) Y  - -4,796,854.702 (meters)                     COMP
 AE2459  NAD 83(2011) Z  -  4,033,500.492 (meters)                     COMP
 AE2459  LAPLACE CORR    -         -4.71  (seconds)                    DEFLEC18
 AE2459
 AE2459  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2459  Standards:
 AE2459         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2459            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2459  -------------------------------------------------------------------
 AE2459  NETWORK    0.47   0.82           0.21   0.17   0.42      0.01283340
 AE2459  -------------------------------------------------------------------
 AE2459  Click here for local accuracies and other accuracy information.
 AE2459
 AE2459.The horizontal coordinates were established by GPS observations
 AE2459.and adjusted by the National Geodetic Survey in June 2012.
 AE2459
 AE2459.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2459.been affixed to the stable North American tectonic plate. See 
 AE2459.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2459
 AE2459.The horizontal coordinates are valid at the epoch date displayed above
 AE2459.which is a decimal equivalence of Year/Month/Day.
 AE2459
 AE2459.The orthometric height was determined by GPS observations and a
 AE2459.high-resolution geoid model using precise GPS observation and
 AE2459.processing techniques.
 AE2459
 AE2459.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2459.GEOID18 height accuracy estimate available here.
 AE2459
 AE2459.Click photographs - Photos may exist for this station.
 AE2459
 AE2459.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2459
 AE2459.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2459
 AE2459.The ellipsoidal height was determined by GPS observations
 AE2459.and is referenced to NAD 83.
 AE2459
 AE2459. The following values were computed from the NAD 83(2011) position.
 AE2459
 AE2459;                    North         East     Units Scale Factor Converg.
 AE2459;SPC MD       -   201,178.012   428,846.576   MT  1.00000511   +0 12 37.5
 AE2459;SPC MD       -   660,031.53  1,406,974.14   sFT  1.00000511   +0 12 37.5
 AE2459;UTM  18      - 4,371,198.288   356,819.993   MT  0.99985241   -1 03 30.9
 AE2459
 AE2459!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2459!SPC MD       -   0.99998980  x   1.00000511  =   0.99999491
 AE2459!UTM  18      -   0.99998980  x   0.99985241  =   0.99984221
 AE2459
 AE2459_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5681971198(NAD 83)
 AE2459
 AE2459                          SUPERSEDED SURVEY CONTROL
 AE2459
 AE2459  NAD 83(2007)-  39 28 42.50877(N)    076 39 53.03364(W) AD(2002.00) 0
 AE2459  ELLIP H (02/10/07)   65.019  (m)                       GP(2002.00)    
 AE2459  ELLIP H (08/30/02)   65.028  (m)                       GP(       ) 4 2
 AE2459  NAD 83(1991)-  39 28 42.50888(N)    076 39 53.03394(W) AD(       ) 1
 AE2459  ELLIP H (08/28/97)   64.994  (m)                       GP(       ) 3 2
 AE2459  NAVD 88 (08/28/97)   97.4    (m)  GEOID96  model used  GPS OBS        
 AE2459
 AE2459.Superseded values are not recommended for survey control.
 AE2459
 AE2459.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2459.See file dsdata.pdf to determine how the superseded data were derived.
 AE2459
 AE2459_MARKER: DD = SURVEY DISK
 AE2459_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2459_STAMPING: NO. GIS-81
 AE2459_MARK LOGO: MD-005
 AE2459_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2459_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2459+STABILITY: SURFACE MOTION
 AE2459_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2459+SATELLITE: SATELLITE OBSERVATIONS - November 27, 2010
 AE2459
 AE2459  HISTORY     - Date     Condition        Report By
 AE2459  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2459  HISTORY     - 19970702 GOOD             MD-005
 AE2459  HISTORY     - 19971114 GOOD             DMW
 AE2459  HISTORY     - 19990127 GOOD             DMW
 AE2459  HISTORY     - 20000905 GOOD             DMW
 AE2459  HISTORY     - 20030109 GOOD             INDIV
 AE2459  HISTORY     - 20070102 POOR             GPSSS
 AE2459  HISTORY     - 20101127 GOOD             NGS
 AE2459
 AE2459                          STATION DESCRIPTION
 AE2459
 AE2459'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2459'STATION IS LOCATED ABOUT 14.0 MI (22.53 KM) NORTH OF THE CENTER OF
 AE2459'BALTIMORE AND ABOUT 1.0 MI (1.61 KM) WEST OF COCKEYSVILLE. TO REACH
 AE2459'STATION FROM THE BEAVERDAM ROAD OVERPASS OVER I-83, GO SOUTH ON I-83
 AE2459'FOR 0.2 MI (0.32 KM) TO THE STATION ON THE RIGHT. STATION IS IN LINE
 AE2459'WITH A ROW OF CEDAR TREES AND WITHIN THE ROAD RIGHT-OF-WAY. STATION
 AE2459'MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 AE2459'WITH THE GROUND. IT IS 44.5 FT (13.56 M) WEST OF THE CENTERLINE OF THE
 AE2459'SOUTHBOUND LANE, 29.25 FT (8.92 M) EAST OF A 5FT HIGH CHAINLINK FENCE
 AE2459'AND 73.0 FT (22.25 M) NORTHWEST OF A SPEED LIMIT SIGN.
 AE2459
 AE2459                          STATION RECOVERY (1997)
 AE2459
 AE2459'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AE2459'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AE2459'1997.
 AE2459
 AE2459                          STATION RECOVERY (1997)
 AE2459
 AE2459'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AE2459'RECOVERED AS DESCRIBED.
 AE2459
 AE2459                          STATION RECOVERY (1999)
 AE2459
 AE2459'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1999 (JMS)
 AE2459'RECOVERED IN GOOD CONDITION.
 AE2459
 AE2459                          STATION RECOVERY (2000)
 AE2459
 AE2459'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2000 (DMM)
 AE2459'RECOVERED IN GOOD CONDITION.
 AE2459
 AE2459                          STATION RECOVERY (2003)
 AE2459
 AE2459'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (RDS)
 AE2459'RECOVERED AS DESCRIBED
 AE2459
 AE2459                          STATION RECOVERY (2007)
 AE2459
 AE2459'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (TED)
 AE2459'RECOVERED BY TED OF SURVEY SERVICES OF MD, LLC.  MOWERS AND STEEP
 AE2459'SLOPE HAVE LOOSENED THE MONUMENT.
 AE2459
 AE2459                          STATION RECOVERY (2010)
 AE2459
 AE2459'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 AE2459'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2460 ***********************************************************************
 AE2460  HT_MOD      -  This is a Height Modernization Survey Station.
 AE2460  DESIGNATION -  GIS 82
 AE2460  PID         -  AE2460
 AE2460  STATE/COUNTY-  MD/BALTIMORE
 AE2460  COUNTRY     -  US
 AE2460  USGS QUAD   -  COCKEYSVILLE (2016)
 AE2460
 AE2460                         *CURRENT SURVEY CONTROL
 AE2460  ______________________________________________________________________
 AE2460* NAD 83(2011) POSITION- 39 28 55.50916(N) 076 44 11.30772(W)   ADJUSTED
 AE2460* NAD 83(2011) ELLIP HT-   167.164 (meters)        (06/27/12)   ADJUSTED
 AE2460* NAD 83(2011) EPOCH   -  2010.00
 AE2460* NAVD 88 ORTHO HEIGHT -   199.35  (meters)      654.0   (feet) GPS OBS
 AE2460  ______________________________________________________________________
 AE2460  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AE2460  GEOID HEIGHT    -        -32.212 (meters)                     GEOID99
 AE2460  GEOID HEIGHT    -        -32.203 (meters)                     GEOID18
 AE2460  NAD 83(2011) X  -  1,130,998.901 (meters)                     COMP
 AE2460  NAD 83(2011) Y  - -4,798,103.319 (meters)                     COMP
 AE2460  NAD 83(2011) Z  -  4,033,874.917 (meters)                     COMP
 AE2460  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 AE2460
 AE2460  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2460  Standards:
 AE2460         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2460            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2460  -------------------------------------------------------------------
 AE2460  NETWORK    0.57   0.96           0.26   0.20   0.49     -0.12458987
 AE2460  -------------------------------------------------------------------
 AE2460  Click here for local accuracies and other accuracy information.
 AE2460
 AE2460.The horizontal coordinates were established by GPS observations
 AE2460.and adjusted by the National Geodetic Survey in June 2012.
 AE2460
 AE2460.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2460.been affixed to the stable North American tectonic plate. See 
 AE2460.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2460
 AE2460.The horizontal coordinates are valid at the epoch date displayed above
 AE2460.which is a decimal equivalence of Year/Month/Day.
 AE2460
 AE2460.The orthometric height was determined by GPS observations and a
 AE2460.high-resolution geoid model using precise GPS observation and
 AE2460.processing techniques.
 AE2460
 AE2460.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2460.GEOID18 height accuracy estimate available here.
 AE2460
 AE2460.Click photographs - Photos may exist for this station.
 AE2460
 AE2460.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2460
 AE2460.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2460
 AE2460.The ellipsoidal height was determined by GPS observations
 AE2460.and is referenced to NAD 83.
 AE2460
 AE2460. The following values were computed from the NAD 83(2011) position.
 AE2460
 AE2460;                    North         East     Units Scale Factor Converg.
 AE2460;SPC MD       -   201,558.708   422,672.658   MT  1.00000577   +0 09 55.4
 AE2460;SPC MD       -   661,280.53  1,386,718.55   sFT  1.00000577   +0 09 55.4
 AE2460;UTM  18      - 4,371,715.587   350,656.899   MT  0.99987460   -1 06 15.5
 AE2460
 AE2460!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2460!SPC MD       -   0.99997377  x   1.00000577  =   0.99997954
 AE2460!UTM  18      -   0.99997377  x   0.99987460  =   0.99984838
 AE2460
 AE2460_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5065671715(NAD 83)
 AE2460
 AE2460                          SUPERSEDED SURVEY CONTROL
 AE2460
 AE2460  NAD 83(2007)-  39 28 55.50932(N)    076 44 11.30842(W) AD(2002.00) 0
 AE2460  ELLIP H (02/10/07)  167.183  (m)                       GP(2002.00)    
 AE2460  ELLIP H (08/30/02)  167.189  (m)                       GP(       ) 4 2
 AE2460  NAD 83(1991)-  39 28 55.50942(N)    076 44 11.30856(W) AD(       ) 1
 AE2460  ELLIP H (08/28/97)  167.153  (m)                       GP(       ) 3 2
 AE2460  NAVD 88 (08/28/97)  199.4    (m)  GEOID96  model used  GPS OBS        
 AE2460
 AE2460.Superseded values are not recommended for survey control.
 AE2460
 AE2460.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2460.See file dsdata.pdf to determine how the superseded data were derived.
 AE2460
 AE2460_MARKER: DD = SURVEY DISK
 AE2460_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2460_STAMPING: GIS-82 1995
 AE2460_MARK LOGO: MD-005
 AE2460_PROJECTION: FLUSH
 AE2460_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2460_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2460+STABILITY: SURFACE MOTION
 AE2460_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2460+SATELLITE: SATELLITE OBSERVATIONS - October 15, 2025
 AE2460
 AE2460  HISTORY     - Date     Condition        Report By
 AE2460  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2460  HISTORY     - 19970702 GOOD             MD-005
 AE2460  HISTORY     - 20030109 GOOD             INDIV
 AE2460  HISTORY     - 20080901 GOOD             GPSSS
 AE2460  HISTORY     - 20251015 GOOD             BASE9
 AE2460
 AE2460                          STATION DESCRIPTION
 AE2460
 AE2460'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2460'STATION IS LOCATED ABOUT 5.0 MI (8.05 KM) WEST OF COCKEYSVILLE AND
 AE2460'ABOUT 5.0 MI (8.05 KM) EAST OF REISTERSTOWN. TO REACH STATION FROM
 AE2460'I-695 (BELTWAY) TAKE EXIT 22 NORTH TO GREESPRING AVE. GO NORTH ON
 AE2460'GREENSPRING AVE FOR 5.45 MI (8.77 KM) TO THE INTERSECTION WITH DOVE
 AE2460'ROAD. TURN RIGHT AND GO NORTH ON DOVER ROAD FOR 1.8 MI (2.90 KM) TO
 AE2460'THE INTERSECTION WITH TUFTON RIDGE ROAD ON THE RIGHT AND THE STATION
 AE2460'ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AE2460'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 16.7 FT (5.09 M)
 AE2460'WEST OF THE CENTERLINE OF DOVER ROAD, 33.6 FT (10.24 M) SOUTHWEST OF
 AE2460'THE INTERSECTION, 70.9 FT (21.61 M) SOUTHWEST OF LIGHT POLE NO.10 AND
 AE2460'16.65 FT (5.07 M) SOUTH OF THE SOUTH SIDE OF A GRASS FIELD LANE.
 AE2460
 AE2460                          STATION RECOVERY (1997)
 AE2460
 AE2460'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AE2460'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AE2460'1997.
 AE2460
 AE2460                          STATION RECOVERY (2003)
 AE2460
 AE2460'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (RDS)
 AE2460'RECOVERED AS DESCRIBED
 AE2460
 AE2460                          STATION RECOVERY (2008)
 AE2460
 AE2460'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (KH)
 AE2460'RECOVERED BY KEITH HEINDEL, PLS, OF PROFESSIONAL SURVEYS, LLC
 AE2460
 AE2460                          STATION RECOVERY (2025)
 AE2460
 AE2460'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2025 (DRD)
 AE2460'LIGHT POLE #10 MENTIONED IN THE 1996 DESCRIPTION MAY HAVE BEEN
 AE2460'REPLACED WITH A NEW POLE WITH NO NUMBER BUT HOSTING THE SIGN FOR
 AE2460'TUFTON ROAD AND WITH A CARSONITE WITNESS POST AT ITS BASE.  MARK IS
 AE2460'1.5 FT (0.5 M) EAST OF THE SOUTH END OF A SHORT WOODEN FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2453 ***********************************************************************
 AE2453  DESIGNATION -  GIS 83
 AE2453  PID         -  AE2453
 AE2453  STATE/COUNTY-  MD/BALTIMORE
 AE2453  COUNTRY     -  US
 AE2453  USGS QUAD   -  ELLICOTT CITY (2016)
 AE2453
 AE2453                         *CURRENT SURVEY CONTROL
 AE2453  ______________________________________________________________________
 AE2453* NAD 83(2011) POSITION- 39 20 18.79687(N) 076 51 36.67512(W)   ADJUSTED
 AE2453* NAD 83(2011) ELLIP HT-   102.146 (meters)        (06/27/12)   ADJUSTED
 AE2453* NAD 83(2011) EPOCH   -  2010.00
 AE2453* NAVD 88 ORTHO HEIGHT -   134.230 (meters)      440.39  (feet) ADJUSTED
 AE2453  ______________________________________________________________________
 AE2453  GEOID HEIGHT    -        -32.093 (meters)                     GEOID18
 AE2453  NAD 83(2011) X  -  1,122,924.669 (meters)                     COMP
 AE2453  NAD 83(2011) Y  - -4,810,337.443 (meters)                     COMP
 AE2453  NAD 83(2011) Z  -  4,021,521.454 (meters)                     COMP
 AE2453  LAPLACE CORR    -         -2.60  (seconds)                    DEFLEC18
 AE2453  DYNAMIC HEIGHT  -        134.159 (meters)      440.15  (feet) COMP
 AE2453  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 AE2453
 AE2453  VERT ORDER      -  SECOND    CLASS II
 AE2453
 AE2453  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2453  Standards:
 AE2453         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2453            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2453  -------------------------------------------------------------------
 AE2453  NETWORK    1.38   2.29           0.66   0.40   1.17      0.15842151
 AE2453  -------------------------------------------------------------------
 AE2453  Click here for local accuracies and other accuracy information.
 AE2453
 AE2453.The horizontal coordinates were established by GPS observations
 AE2453.and adjusted by the National Geodetic Survey in June 2012.
 AE2453
 AE2453.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2453.been affixed to the stable North American tectonic plate. See 
 AE2453.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2453
 AE2453.The horizontal coordinates are valid at the epoch date displayed above
 AE2453.which is a decimal equivalence of Year/Month/Day.
 AE2453
 AE2453.The orthometric height was determined by differential leveling and
 AE2453.adjusted by the NATIONAL GEODETIC SURVEY
 AE2453.in February 1998.
 AE2453
 AE2453.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2453.GEOID18 height accuracy estimate available here.
 AE2453
 AE2453.Click photographs - Photos may exist for this station.
 AE2453
 AE2453.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2453
 AE2453.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2453
 AE2453.The ellipsoidal height was determined by GPS observations
 AE2453.and is referenced to NAD 83.
 AE2453
 AE2453.The dynamic height is computed by dividing the NAVD 88
 AE2453.geopotential number by the normal gravity value computed on the
 AE2453.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2453.degrees latitude (g = 980.6199 gals.).
 AE2453
 AE2453.The modeled gravity was interpolated from observed gravity values.
 AE2453
 AE2453. The following values were computed from the NAD 83(2011) position.
 AE2453
 AE2453;                    North         East     Units Scale Factor Converg.
 AE2453;SPC MD       -   185,600.005   412,053.305   MT  0.99998240   +0 05 15.9
 AE2453;SPC MD       -   608,922.68  1,351,878.22   sFT  0.99998240   +0 05 15.9
 AE2453;UTM  18      - 4,355,997.426   339,687.942   MT  0.99991644   -1 10 45.9
 AE2453
 AE2453!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2453!SPC MD       -   0.99998397  x   0.99998240  =   0.99996637
 AE2453!UTM  18      -   0.99998397  x   0.99991644  =   0.99990042
 AE2453
 AE2453_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3968755997(NAD 83)
 AE2453
 AE2453                          SUPERSEDED SURVEY CONTROL
 AE2453
 AE2453  NAD 83(2007)-  39 20 18.79705(N)    076 51 36.67593(W) AD(2002.00) 0
 AE2453  ELLIP H (02/10/07)  102.165  (m)                       GP(2002.00)    
 AE2453  ELLIP H (08/30/02)  102.173  (m)                       GP(       ) 4 2
 AE2453  NAD 83(1991)-  39 20 18.79626(N)    076 51 36.67602(W) AD(       ) 1
 AE2453  ELLIP H (08/28/97)  102.105  (m)                       GP(       ) 3 2
 AE2453  NAVD 88 (08/28/97)  134.3    (m)  GEOID96  model used  GPS OBS        
 AE2453
 AE2453.Superseded values are not recommended for survey control.
 AE2453
 AE2453.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2453.See file dsdata.pdf to determine how the superseded data were derived.
 AE2453
 AE2453_MARKER: DD = SURVEY DISK
 AE2453_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2453_STAMPING: NO. GIS-83 1995
 AE2453_MARK LOGO: MD-005
 AE2453_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2453_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2453+STABILITY: SURFACE MOTION
 AE2453_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2453+SATELLITE: SATELLITE OBSERVATIONS - February 01, 1996
 AE2453
 AE2453  HISTORY     - Date     Condition        Report By
 AE2453  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2453  HISTORY     - 19960201 GOOD             MCCRON
 AE2453
 AE2453                          STATION DESCRIPTION
 AE2453
 AE2453'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2453'STATION IS LOCATED ABOUT 13.5 MI (21.73 KM) WEST OF THE CENTER OF
 AE2453'BALTIMORE AND ABOUT 4.0 MI (6.44 KM) SOUTHWEST OF RANDALLSTOWN NEAR
 AE2453'WOODSTOCK. TO REACH THE STATION FROM THE NEW POST OFFICE IN WOODSTOCK
 AE2453'GO NORTH ON ROUTE 125 (OLD COURT ROAD) FOR 1.9 MI (3.06 KM) TO THE
 AE2453'INTERSECTION OF DAVIS AVE TO THE RIGHT AND ST. ALPHONSUS RODRIQUEZ
 AE2453'CATHOLIC CHURCH AND THE STATION ON THE LEFT. STATION MARK IS SET IN
 AE2453'THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE2453'GROUND.  IT IS 29.95 FT (9.13 M) SOUTHWEST OF THE CENTERLINE OF THE
 AE2453'CHURCH ENTRANCE, 30.6 FT (9.33 M) NORTHWEST OF THE CENTERLINE OF ROUTE
 AE2453'125, 49.4 FT (15.06 M) NORTHEAST OF TELEPHONE POLE NO. 213, AND 30.7
 AE2453'FT (9.36 M) NORTHEAST OF THE CHURCH SIGN.
 AE2453
 AE2453                          STATION RECOVERY (1996)
 AE2453
 AE2453'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2453'STATION IS LOCATED ABOUT 13.5 MI (21.7 KM) WEST OF THE CENTER OF
 AE2453'BALTIMORE AND ABOUT 4.0 MI (6.4 KM) SOUTHWEST OF RANDALLSTOWN NEAR
 AE2453'WOODSTOCK.  TO REACH THE STATION FROM THE NEW POST OFFICE IN WOODSTOCK
 AE2453'GO NORTH ON ROUTE 125 (OLD COURT ROAD) FOR 1.9 MI (3.1 KM) TO THE
 AE2453'INTERSECTION OF DAVIS AVE TO THE RIGHT AND ST.  ALPHONSUS RODRIQUEZ
 AE2453'CATHOLIC CHURCH AND THE STATION ON THE LEFT.  STATION MARK IS SET IN
 AE2453'THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE2453'GROUND.  IT IS 29.95 FT (9.13 M) SOUTHWEST OF THE CENTERLINE OF THE
 AE2453'CHURCH ENTRANCE, 30.6 FT (9.3 M) NORTHWEST OF THE CENTERLINE OF ROUTE
 AE2453'125, 49.4 FT (15.1 M) NORTHEAST OF TELEPHONE POLE NO.  213, AND 30.7
 AE2453'FT (9.4 M) NORTHEAST OF THE CHURCH SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2466 ***********************************************************************
 AE2466  DESIGNATION -  GIS 84
 AE2466  PID         -  AE2466
 AE2466  STATE/COUNTY-  MD/CARROLL
 AE2466  COUNTRY     -  US
 AE2466  USGS QUAD   -  FINKSBURG (2016)
 AE2466
 AE2466                         *CURRENT SURVEY CONTROL
 AE2466  ______________________________________________________________________
 AE2466* NAD 83(2011) POSITION- 39 24 59.55797(N) 076 53 04.89645(W)   ADJUSTED
 AE2466* NAD 83(2011) ELLIP HT-    97.808 (meters)        (06/27/12)   ADJUSTED
 AE2466* NAD 83(2011) EPOCH   -  2010.00
 AE2466* NAVD 88 ORTHO HEIGHT -   129.8   (meters)      426.    (feet) GPS OBS
 AE2466  ______________________________________________________________________
 AE2466  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE2466  GEOID HEIGHT    -        -32.042 (meters)                     GEOID96
 AE2466  GEOID HEIGHT    -        -32.038 (meters)                     GEOID18
 AE2466  NAD 83(2011) X  -  1,119,619.882 (meters)                     COMP
 AE2466  NAD 83(2011) Y  - -4,805,463.991 (meters)                     COMP
 AE2466  NAD 83(2011) Z  -  4,028,211.728 (meters)                     COMP
 AE2466  LAPLACE CORR    -         -1.85  (seconds)                    DEFLEC18
 AE2466
 AE2466  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2466  Standards:
 AE2466         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2466            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2466  -------------------------------------------------------------------
 AE2466  NETWORK    0.62   1.18           0.28   0.22   0.60     -0.03041629
 AE2466  -------------------------------------------------------------------
 AE2466  Click here for local accuracies and other accuracy information.
 AE2466
 AE2466.The horizontal coordinates were established by GPS observations
 AE2466.and adjusted by the National Geodetic Survey in June 2012.
 AE2466
 AE2466.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2466.been affixed to the stable North American tectonic plate. See 
 AE2466.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2466
 AE2466.The horizontal coordinates are valid at the epoch date displayed above
 AE2466.which is a decimal equivalence of Year/Month/Day.
 AE2466
 AE2466.The orthometric height was determined by GPS observations and a
 AE2466.high-resolution geoid model.
 AE2466
 AE2466.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2466.GEOID18 height accuracy estimate available here.
 AE2466
 AE2466.Click photographs - Photos may exist for this station.
 AE2466
 AE2466.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2466
 AE2466.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2466
 AE2466.The ellipsoidal height was determined by GPS observations
 AE2466.and is referenced to NAD 83.
 AE2466
 AE2466. The following values were computed from the NAD 83(2011) position.
 AE2466
 AE2466;                    North         East     Units Scale Factor Converg.
 AE2466;SPC MD       -   194,255.515   409,929.701   MT  0.99999432   +0 04 20.5
 AE2466;SPC MD       -   637,319.97  1,344,911.03   sFT  0.99999432   +0 04 20.5
 AE2466;UTM  18      - 4,364,697.227   337,756.564   MT  0.99992410   -1 11 49.0
 AE2466
 AE2466!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2466!SPC MD       -   0.99998466  x   0.99999432  =   0.99997898
 AE2466!UTM  18      -   0.99998466  x   0.99992410  =   0.99990876
 AE2466
 AE2466_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3775664697(NAD 83)
 AE2466
 AE2466                          SUPERSEDED SURVEY CONTROL
 AE2466
 AE2466  NAD 83(2007)-  39 24 59.55812(N)    076 53 04.89720(W) AD(2002.00) 0
 AE2466  ELLIP H (02/10/07)   97.826  (m)                       GP(2002.00)    
 AE2466  ELLIP H (08/30/02)   97.836  (m)                       GP(       ) 4 2
 AE2466  NAD 83(1991)-  39 24 59.55768(N)    076 53 04.89744(W) AD(       ) 1
 AE2466  ELLIP H (08/28/97)   97.774  (m)                       GP(       ) 3 2
 AE2466
 AE2466.Superseded values are not recommended for survey control.
 AE2466
 AE2466.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2466.See file dsdata.pdf to determine how the superseded data were derived.
 AE2466
 AE2466_MARKER: DD = SURVEY DISK
 AE2466_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2466_STAMPING: NO. GIS-84 1996
 AE2466_MARK LOGO: MD-005
 AE2466_MAGNETIC: S = STEEL SPIKE IMBEDDED IN MONUMENT
 AE2466_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2466+STABILITY: SURFACE MOTION
 AE2466_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2466+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AE2466
 AE2466  HISTORY     - Date     Condition        Report By
 AE2466  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2466
 AE2466                          STATION DESCRIPTION
 AE2466
 AE2466'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2466'STATION IS LOCATED ABOUT 17 MI (27.36 KM) NORTHWEST OF THE CENTER OF
 AE2466'BALTIMORE AND ABOUT 4.5 MI (7.24 KM) SOUTHWEST OF REISTERSTOWN. TO
 AE2466'REACH STATION FROM THE CENTER OF THE ROUTE 26 (LIBERTY ROAD) BRIDGE
 AE2466'OVER THE LIBERTY RESERVOIR AT THE BALTIMORE-CARROLL COUNTY LINE, GO
 AE2466'WEST ON ROUTE 26 FOR 0.4 MI (0.64 KM) TO THE INTERSECTION WITH OAKLAND
 AE2466'MILLS ROAD. TURN RIGHT AND GO NORTH ON OAKLAND MILLS ROAD FOR 1.0 MI
 AE2466'(1.61 KM) TO THE INTERSECTION WITH OAKLAND ROAD. TURN RIGHT AND GO
 AE2466'NORTHEAST ON OAKLAND ROAD FOR O.9 MI TO THE ENTRANCE OF THE BALTIMORE
 AE2466'CITY WATERSHED SECTION. TURN RIGHT AND GO SOUTHEAST THROUGH THE GATE
 AE2466'AND THE COMPOUND FOR 0.1 MI (0.16 KM) , TURN LEFT AND GO NORTH ON A
 AE2466'GRASS/GRAVEL LANE FOR 0.1 MI (0.16 KM) TO THE WATERS EDGE OF THE
 AE2466'RESERVOIR AND THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP
 AE2466'OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT
 AE2466'IS 35.9 FT (10.94 M) SOUTHWEST OF OF THE WSTERS EDGE, 38.6 FT (11.77
 AE2466'M) WEST OF THE NORTH CORNER OF A METAL BUILDING, 37.8 FT (11.52 M)
 AE2466'NORTH OF THE SOUTHWEST CORNER OF THE BUILDING AND 24.6 FT (7.50 M)
 AE2466'NORTHEAST OF THE CENTERLINE OF THE LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2452 ***********************************************************************
 AE2452  DESIGNATION -  GIS 85
 AE2452  PID         -  AE2452
 AE2452  STATE/COUNTY-  MD/BALTIMORE
 AE2452  COUNTRY     -  US
 AE2452  USGS QUAD   -  RELAY (2016)
 AE2452
 AE2452                         *CURRENT SURVEY CONTROL
 AE2452  ______________________________________________________________________
 AE2452* NAD 83(2011) POSITION- 39 14 06.55340(N) 076 38 45.67085(W)   ADJUSTED
 AE2452* NAD 83(2011) ELLIP HT-   -13.384 (meters)        (06/27/12)   ADJUSTED
 AE2452* NAD 83(2011) EPOCH   -  2010.00
 AE2452* NAVD 88 ORTHO HEIGHT -    19.303 (meters)       63.33  (feet) ADJUSTED
 AE2452  ______________________________________________________________________
 AE2452  GEOID HEIGHT    -        -32.710 (meters)                     GEOID18
 AE2452  NAD 83(2011) X  -  1,142,555.754 (meters)                     COMP
 AE2452  NAD 83(2011) Y  - -4,813,091.904 (meters)                     COMP
 AE2452  NAD 83(2011) Z  -  4,012,563.138 (meters)                     COMP
 AE2452  LAPLACE CORR    -         -5.67  (seconds)                    DEFLEC18
 AE2452  DYNAMIC HEIGHT  -         19.292 (meters)       63.29  (feet) COMP
 AE2452  MODELED GRAVITY -    980,099.6   (mgal)                       NAVD 88
 AE2452
 AE2452  VERT ORDER      -  SECOND    CLASS II
 AE2452
 AE2452  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2452  Standards:
 AE2452         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2452            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2452  -------------------------------------------------------------------
 AE2452  NETWORK    0.62   0.96           0.29   0.20   0.49      0.12476266
 AE2452  -------------------------------------------------------------------
 AE2452  Click here for local accuracies and other accuracy information.
 AE2452
 AE2452.The horizontal coordinates were established by GPS observations
 AE2452.and adjusted by the National Geodetic Survey in June 2012.
 AE2452
 AE2452.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2452.been affixed to the stable North American tectonic plate. See 
 AE2452.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2452
 AE2452.The horizontal coordinates are valid at the epoch date displayed above
 AE2452.which is a decimal equivalence of Year/Month/Day.
 AE2452
 AE2452.The orthometric height was determined by differential leveling and
 AE2452.adjusted by the NATIONAL GEODETIC SURVEY
 AE2452.in February 1998.
 AE2452
 AE2452.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2452.GEOID18 height accuracy estimate available here.
 AE2452
 AE2452.Click photographs - Photos may exist for this station.
 AE2452
 AE2452.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2452
 AE2452.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2452
 AE2452.The ellipsoidal height was determined by GPS observations
 AE2452.and is referenced to NAD 83.
 AE2452
 AE2452.The dynamic height is computed by dividing the NAVD 88
 AE2452.geopotential number by the normal gravity value computed on the
 AE2452.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2452.degrees latitude (g = 980.6199 gals.).
 AE2452
 AE2452.The modeled gravity was interpolated from observed gravity values.
 AE2452
 AE2452. The following values were computed from the NAD 83(2011) position.
 AE2452
 AE2452;                    North         East     Units Scale Factor Converg.
 AE2452;SPC MD       -   174,170.633   430,561.274   MT  0.99996947   +0 13 19.8
 AE2452;SPC MD       -   571,424.82  1,412,599.78   sFT  0.99996947   +0 13 19.8
 AE2452;UTM  18      - 4,344,163.271   357,937.309   MT  0.99984850   -1 02 28.6
 AE2452
 AE2452!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2452!SPC MD       -   1.00000210  x   0.99996947  =   0.99997157
 AE2452!UTM  18      -   1.00000210  x   0.99984850  =   0.99985060
 AE2452
 AE2452_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5793744163(NAD 83)
 AE2452
 AE2452                          SUPERSEDED SURVEY CONTROL
 AE2452
 AE2452  NAD 83(2007)-  39 14 06.55370(N)    076 38 45.67167(W) AD(2002.00) 0
 AE2452  ELLIP H (02/10/07)  -13.372  (m)                       GP(2002.00)    
 AE2452  ELLIP H (08/30/02)  -13.355  (m)                       GP(       ) 4 2
 AE2452  NAD 83(1991)-  39 14 06.55362(N)    076 38 45.67112(W) AD(       ) 1
 AE2452  ELLIP H (08/28/97)  -13.432  (m)                       GP(       ) 3 2
 AE2452  NAVD 88              19.30   (m)           63.3    (f) LEVELING    3  
 AE2452  NAVD 88 (08/28/97)   19.3    (m)  GEOID96  model used  GPS OBS        
 AE2452
 AE2452.Superseded values are not recommended for survey control.
 AE2452
 AE2452.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2452.See file dsdata.pdf to determine how the superseded data were derived.
 AE2452
 AE2452_MARKER: DD = SURVEY DISK
 AE2452_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2452_STAMPING: NO. GIS-85 1995
 AE2452_MARK LOGO: MD-005
 AE2452_PROJECTION: FLUSH
 AE2452_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE2452_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2452+STABILITY: SURFACE MOTION
 AE2452_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2452+SATELLITE: SATELLITE OBSERVATIONS - October 05, 2022
 AE2452
 AE2452  HISTORY     - Date     Condition        Report By
 AE2452  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2452  HISTORY     - 19960201 GOOD             MCCRON
 AE2452  HISTORY     - 19990218 GOOD             AMTHOM
 AE2452  HISTORY     - 20000123 GOOD             GEOMET
 AE2452  HISTORY     - 20030708 GOOD             DMW
 AE2452  HISTORY     - 20050805 GOOD             DEWDAV
 AE2452  HISTORY     - 20070204 GOOD             INDIV
 AE2452  HISTORY     - 20080826 GOOD             GEOMET
 AE2452  HISTORY     - 20091001 GOOD             MD-005
 AE2452  HISTORY     - 20101028 GOOD             GPSSS
 AE2452  HISTORY     - 20110619 GOOD             INDIV
 AE2452  HISTORY     - 20121113 GOOD             INDIV
 AE2452  HISTORY     - 20170510 GOOD             WRA
 AE2452  HISTORY     - 20221005 GOOD             WTBALL
 AE2452
 AE2452                          STATION DESCRIPTION
 AE2452
 AE2452'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2452'STATION IS LOCATED ABOUT 5 MI (8.05 KM) SOUTH OF THE CENTER OF
 AE2452'BALTIMORE AND 1.5 MI (2.41 KM) SOUTHEAST OF LANSDOWNE ON THE GROUNDS
 AE2452'OF THE HICKORY HILLS LOCALITY PARK. TO REACH THE STATION FROM THE
 AE2452'ROUTE 648 (ANNAPOLIS ROAD) OVERPASS OVER ROUTE 295
 AE2452'(BALTIMORE-WASHINGTON PARKWAY) GO SOUTH ON ROUTE 648 FOR 1.85 MI (2.98
 AE2452'KM) TO THE INTERSECTION WITH VIRGINIA AVE.  TURN RIGHT ON VIRGINIA AVE
 AE2452'AND GO WEST 0.25 MI (0.40 KM) TO THE INTERSECTION WITH WALNUT ROAD,
 AE2452'THE HICKORY HILLS LOCALITY PARK, AND THE STATION ON THE LEFT. STATION
 AE2452'MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET
 AE2452'FLUSH WITH THE GROUND.  IT IS 17.5 FT (5.33 M) WEST OF THE PARK SIGN,
 AE2452'45.1 FT (13.75 M) SOUTH OF THE CENTERLINE OF VIRGINIA AVE, 60.9 FT
 AE2452'(18.56 M) EAST OF THE CENTERLINE OF WALNUT ROAD, 44.7 FT (13.62 M)
 AE2452'SOUTHEAST OF A FIRE HYDRANT, AND 42.2 FT (12.86 M) SOUTHEAST OF POWER
 AE2452'POLE NO. 372886.
 AE2452
 AE2452                          STATION RECOVERY (1996)
 AE2452
 AE2452'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2452'STATION IS LOCATED ABOUT 5 MI (8.0 KM) SOUTH OF THE CENTER OF
 AE2452'BALTIMORE AND 1.5 MI (2.4 KM) SOUTHEAST OF LANSDOWNE ON THE GROUNDS OF
 AE2452'THE HICKORY HILLS LOCALITY PARK.  TO REACH THE STATION FROM THE ROUTE
 AE2452'648 (ANNAPOLIS ROAD) OVERPASS OVER ROUTE 295 (BALTIMORE-WASHINGTON
 AE2452'PARKWAY) GO SOUTH ON ROUTE 648 FOR 1.85 MI (2.98 KM) TO THE
 AE2452'INTERSECTION WITH VIRGINIA AVE.  TURN RIGHT ON VIRGINIA AVE AND GO
 AE2452'WEST 0.25 MI (0.40 KM) TO THE INTERSECTION WITH WALNUT ROAD, THE
 AE2452'HICKORY HILLS LOCALITY PARK, AND THE STATION ON THE LEFT.  STATION
 AE2452'MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET
 AE2452'FLUSH WITH THE GROUND.  IT IS 17.5 FT (5.3 M) WEST OF THE PARK SIGN,
 AE2452'45.1 FT (13.7 M) SOUTH OF THE CENTERLINE OF VIRGINIA AVE, 60.9 FT
 AE2452'(18.6 M) EAST OF THE CENTERLINE OF WALNUT ROAD, 44.7 FT (13.6 M)
 AE2452'SOUTHEAST OF A FIRE HYDRANT, AND 42.2 FT (12.9 M) SOUTHEAST OF POWER
 AE2452'POLE NO.  372886.
 AE2452
 AE2452                          STATION RECOVERY (1999)
 AE2452
 AE2452'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 1999
 AE2452'RECOVERED AS DESCRIBED.
 AE2452
 AE2452                          STATION RECOVERY (2000)
 AE2452
 AE2452'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (BAB)
 AE2452'GOOD CONDITION.
 AE2452
 AE2452                          STATION RECOVERY (2003)
 AE2452
 AE2452'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (DMM)
 AE2452'RECOVERED IN GOOD CONDITION.
 AE2452
 AE2452                          STATION RECOVERY (2005)
 AE2452
 AE2452'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (CSW)
 AE2452'RECOVERED IN GOOD CONDITION.
 AE2452
 AE2452                          STATION RECOVERY (2007)
 AE2452
 AE2452'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (WRA)
 AE2452'RECOVERED AS DESCRIBED  (JFS)
 AE2452
 AE2452                          STATION RECOVERY (2008)
 AE2452
 AE2452'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2008 (CEN)
 AE2452'RECOVERED IN GOOD CONDITION.
 AE2452
 AE2452                          STATION RECOVERY (2009)
 AE2452
 AE2452'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 AE2452'RECOVERED IN GOOD CONDITION.
 AE2452
 AE2452                          STATION RECOVERY (2010)
 AE2452
 AE2452'RECOVERY NOTE BY GPS SALES AND SERVICES 2010 (MB)
 AE2452'RECOVERED BY MIKE BUTLER OF NORTHERN BAY SURVEYS.
 AE2452
 AE2452                          STATION RECOVERY (2011)
 AE2452
 AE2452'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 AE2452'RECOVERED AS DESCRIBED, DESCRIPTION IS ADEQUATE. USED FOR GPS (JFS)
 AE2452
 AE2452                          STATION RECOVERY (2012)
 AE2452
 AE2452'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2012 (JFS)
 AE2452'RECOVERED AS DESCRIBED
 AE2452
 AE2452                          STATION RECOVERY (2017)
 AE2452
 AE2452'RECOVERY NOTE BY WHIGMAN AND REQUARDT ASSOCIATES 2017 (WRA)
 AE2452'RECOVERED AS DESCRIBED
 AE2452'DESCRIPTION IS ADEQUATE
 AE2452
 AE2452                          STATION RECOVERY (2022)
 AE2452
 AE2452'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2022 (NAW)
 AE2452'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2450 ***********************************************************************
 AE2450  DESIGNATION -  GIS 86
 AE2450  PID         -  AE2450
 AE2450  STATE/COUNTY-  MD/BALTIMORE
 AE2450  COUNTRY     -  US
 AE2450  USGS QUAD   -  RELAY (2016)
 AE2450
 AE2450                         *CURRENT SURVEY CONTROL
 AE2450  ______________________________________________________________________
 AE2450* NAD 83(2011) POSITION- 39 13 22.65106(N) 076 42 00.13981(W)   ADJUSTED
 AE2450* NAD 83(2011) ELLIP HT-   -15.132 (meters)        (06/27/12)   ADJUSTED
 AE2450* NAD 83(2011) EPOCH   -  2010.00
 AE2450* NAVD 88 ORTHO HEIGHT -    17.413 (meters)       57.13  (feet) ADJUSTED
 AE2450  ______________________________________________________________________
 AE2450  GEOID HEIGHT    -        -32.562 (meters)                     GEOID18
 AE2450  NAD 83(2011) X  -  1,138,214.069 (meters)                     COMP
 AE2450  NAD 83(2011) Y  - -4,814,998.931 (meters)                     COMP
 AE2450  NAD 83(2011) Z  -  4,011,513.274 (meters)                     COMP
 AE2450  LAPLACE CORR    -         -6.38  (seconds)                    DEFLEC18
 AE2450  DYNAMIC HEIGHT  -         17.404 (meters)       57.10  (feet) COMP
 AE2450  MODELED GRAVITY -    980,102.1   (mgal)                       NAVD 88
 AE2450
 AE2450  VERT ORDER      -  SECOND    CLASS II
 AE2450
 AE2450  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2450  Standards:
 AE2450         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2450            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2450  -------------------------------------------------------------------
 AE2450  NETWORK    0.47   0.94           0.21   0.17   0.48     -0.00316901
 AE2450  -------------------------------------------------------------------
 AE2450  Click here for local accuracies and other accuracy information.
 AE2450
 AE2450.The horizontal coordinates were established by GPS observations
 AE2450.and adjusted by the National Geodetic Survey in June 2012.
 AE2450
 AE2450.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2450.been affixed to the stable North American tectonic plate. See 
 AE2450.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2450
 AE2450.The horizontal coordinates are valid at the epoch date displayed above
 AE2450.which is a decimal equivalence of Year/Month/Day.
 AE2450
 AE2450.The orthometric height was determined by differential leveling and
 AE2450.adjusted by the NATIONAL GEODETIC SURVEY
 AE2450.in February 1998.
 AE2450
 AE2450.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2450.GEOID18 height accuracy estimate available here.
 AE2450
 AE2450.Click photographs - Photos may exist for this station.
 AE2450
 AE2450.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2450
 AE2450.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2450
 AE2450.The ellipsoidal height was determined by GPS observations
 AE2450.and is referenced to NAD 83.
 AE2450
 AE2450.The dynamic height is computed by dividing the NAVD 88
 AE2450.geopotential number by the normal gravity value computed on the
 AE2450.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2450.degrees latitude (g = 980.6199 gals.).
 AE2450
 AE2450.The modeled gravity was interpolated from observed gravity values.
 AE2450
 AE2450. The following values were computed from the NAD 83(2011) position.
 AE2450
 AE2450;                    North         East     Units Scale Factor Converg.
 AE2450;SPC MD       -   172,800.080   425,901.939   MT  0.99996816   +0 11 17.8
 AE2450;SPC MD       -   566,928.26  1,397,313.28   sFT  0.99996816   +0 11 17.8
 AE2450;UTM  18      - 4,342,895.931   353,249.412   MT  0.99986517   -1 04 30.7
 AE2450
 AE2450!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2450!SPC MD       -   1.00000237  x   0.99996816  =   0.99997053
 AE2450!UTM  18      -   1.00000237  x   0.99986517  =   0.99986754
 AE2450
 AE2450:                Primary Azimuth Mark                     Grid Az
 AE2450:SPC MD       -  GIS 87                                   267 57 00.9
 AE2450:UTM  18      -  GIS 87                                   269 12 49.4
 AE2450
 AE2450_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5324942895(NAD 83)
 AE2450
 AE2450|---------------------------------------------------------------------|
 AE2450| PID    Reference Object                     Distance      Geod. Az  |
 AE2450|                                                           dddmmss.s |
 AE2450| AE2451 GIS 87                              APPROX. 1.1 KM 2680818.7 |
 AE2450|---------------------------------------------------------------------|
 AE2450
 AE2450                          SUPERSEDED SURVEY CONTROL
 AE2450
 AE2450  NAD 83(2007)-  39 13 22.65137(N)    076 42 00.14063(W) AD(2002.00) 0
 AE2450  ELLIP H (02/10/07)  -15.122  (m)                       GP(2002.00)    
 AE2450  ELLIP H (08/30/02)  -15.111  (m)                       GP(       ) 4 2
 AE2450  NAD 83(1991)-  39 13 22.65122(N)    076 42 00.14001(W) AD(       ) 1
 AE2450  ELLIP H (08/28/97)  -15.184  (m)                       GP(       ) 3 2
 AE2450  NAVD 88 (08/28/97)   17.4    (m)  GEOID96  model used  GPS OBS        
 AE2450
 AE2450.Superseded values are not recommended for survey control.
 AE2450
 AE2450.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2450.See file dsdata.pdf to determine how the superseded data were derived.
 AE2450
 AE2450_MARKER: DD = SURVEY DISK
 AE2450_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2450_STAMPING: NO. GIS-86 1995
 AE2450_MARK LOGO: MD-005
 AE2450_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2450_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2450+STABILITY: SURFACE MOTION
 AE2450_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2450+SATELLITE: SATELLITE OBSERVATIONS - February 23, 2012
 AE2450
 AE2450  HISTORY     - Date     Condition        Report By
 AE2450  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2450  HISTORY     - 19960201 GOOD             MCCRON
 AE2450  HISTORY     - 20030921 GOOD             USPSQD
 AE2450  HISTORY     - 20080722 GOOD             GEOMET
 AE2450  HISTORY     - 20110214 GOOD             NGS
 AE2450  HISTORY     - 20120223 GOOD             INDIV
 AE2450
 AE2450                          STATION DESCRIPTION
 AE2450
 AE2450'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2450'STATION IS LOCATED ABOUT 7.5 MI (12.07 KM) SOUTHWEST OF THE CENTER OF
 AE2450'BALTIMORE AND 1.0 MI (1.61 KM) NORTHEAST OF ELKRIDGE. TO REACH THE
 AE2450'STATION FROM THE I-195 OVERPASS OVER ROUTE 1 (WASHINGTON BLVD) GO
 AE2450'NORTH ON ROUTE 1 FOR 0.15 MI (0.24 KM) TO THE STATION ON THE LEFT IN A
 AE2450'GRASS CURB ISLAND BETWEEN TWO ENTRANCE RAMPS TO I-195. STATION MARK IS
 AE2450'SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AE2450'THE GROUND.  IT IS 36.1 FT (11.00 M) WEST OF THE CENTERLINE OF
 AE2450'SOUTHBOUND ROUTE 1, 77.6 FT (23.65 M) NORTHEAST OF A LIGHT POLE, 101.3
 AE2450'FT (30.88 M) NORTH OF THE CENTERLINE OF THE SOUTHERNMOST ENTRANCE RAMP
 AE2450'TO I-195, AND 38.8 FT (11.83 M) SOUTHEAST OF THE CENTERLINE OF THE
 AE2450'NORTHERNMOST ENTRANCE RAMP TO I-195.
 AE2450
 AE2450                          STATION RECOVERY (1996)
 AE2450
 AE2450'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2450'STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) SOUTHWEST OF THE CENTER OF
 AE2450'BALTIMORE AND 1.0 MI (1.6 KM) NORTHEAST OF ELKRIDGE.  TO REACH THE
 AE2450'STATION FROM THE I-195 OVERPASS OVER ROUTE 1 (WASHINGTON BLVD) GO
 AE2450'NORTH ON ROUTE 1 FOR 0.15 MI (0.24 KM) TO THE STATION ON THE LEFT IN A
 AE2450'GRASS CURB ISLAND BETWEEN TWO ENTRANCE RAMPS TO I-195.  STATION MARK
 AE2450'IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH
 AE2450'WITH THE GROUND.  IT IS 36.1 FT (11.0 M) WEST OF THE CENTERLINE OF
 AE2450'SOUTHBOUND ROUTE 1, 77.6 FT (23.7 M) NORTHEAST OF A LIGHT POLE, 101.3
 AE2450'FT (30.9 M) NORTH OF THE CENTERLINE OF THE SOUTHERNMOST ENTRANCE RAMP
 AE2450'TO I-195, AND 38.8 FT (11.8 M) SOUTHEAST OF THE CENTERLINE OF THE
 AE2450'NORTHERNMOST ENTRANCE RAMP TO I-195.
 AE2450
 AE2450                          STATION RECOVERY (2003)
 AE2450
 AE2450'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 AE2450'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 2.6 FEET NORTHEAST
 AE2450'OF AN ORANGE FIBERGLASS WITNESS POST.
 AE2450
 AE2450                          STATION RECOVERY (2008)
 AE2450
 AE2450'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2008 (KRO)
 AE2450'RECOVERED IN GOOD CONDITION.
 AE2450
 AE2450                          STATION RECOVERY (2011)
 AE2450
 AE2450'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 AE2450'RECOVERED IN GOOD CONDITION.
 AE2450
 AE2450                          STATION RECOVERY (2012)
 AE2450
 AE2450'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2012 (WRA)
 AE2450'RECOVERED AS DESCRIBED, DESCRIPTION IS ADEQUATE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2451 ***********************************************************************
 AE2451  DESIGNATION -  GIS 87
 AE2451  PID         -  AE2451
 AE2451  STATE/COUNTY-  MD/BALTIMORE
 AE2451  COUNTRY     -  US
 AE2451  USGS QUAD   -  RELAY (2016)
 AE2451
 AE2451                         *CURRENT SURVEY CONTROL
 AE2451  ______________________________________________________________________
 AE2451* NAD 83(2011) POSITION- 39 13 21.47985(N) 076 42 46.36949(W)   ADJUSTED
 AE2451* NAD 83(2011) ELLIP HT-   -11.492 (meters)        (06/27/12)   ADJUSTED
 AE2451* NAD 83(2011) EPOCH   -  2010.00
 AE2451* NAVD 88 ORTHO HEIGHT -    21.021 (meters)       68.97  (feet) ADJUSTED
 AE2451  ______________________________________________________________________
 AE2451  GEOID HEIGHT    -        -32.519 (meters)                     GEOID18
 AE2451  NAD 83(2011) X  -  1,137,140.763 (meters)                     COMP
 AE2451  NAD 83(2011) Y  - -4,815,278.887 (meters)                     COMP
 AE2451  NAD 83(2011) Z  -  4,011,487.594 (meters)                     COMP
 AE2451  LAPLACE CORR    -         -6.50  (seconds)                    DEFLEC18
 AE2451  DYNAMIC HEIGHT  -         21.010 (meters)       68.93  (feet) COMP
 AE2451  MODELED GRAVITY -    980,102.7   (mgal)                       NAVD 88
 AE2451
 AE2451  VERT ORDER      -  SECOND    CLASS II
 AE2451
 AE2451  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2451  Standards:
 AE2451         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2451            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2451  -------------------------------------------------------------------
 AE2451  NETWORK    0.51   0.98           0.23   0.18   0.50     -0.03639017
 AE2451  -------------------------------------------------------------------
 AE2451  Click here for local accuracies and other accuracy information.
 AE2451
 AE2451.The horizontal coordinates were established by GPS observations
 AE2451.and adjusted by the National Geodetic Survey in June 2012.
 AE2451
 AE2451.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2451.been affixed to the stable North American tectonic plate. See 
 AE2451.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2451
 AE2451.The horizontal coordinates are valid at the epoch date displayed above
 AE2451.which is a decimal equivalence of Year/Month/Day.
 AE2451
 AE2451.The orthometric height was determined by differential leveling and
 AE2451.adjusted by the NATIONAL GEODETIC SURVEY
 AE2451.in February 1998.
 AE2451
 AE2451.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2451.GEOID18 height accuracy estimate available here.
 AE2451
 AE2451.Click photographs - Photos may exist for this station.
 AE2451
 AE2451.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2451
 AE2451.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2451
 AE2451.The ellipsoidal height was determined by GPS observations
 AE2451.and is referenced to NAD 83.
 AE2451
 AE2451.The dynamic height is computed by dividing the NAVD 88
 AE2451.geopotential number by the normal gravity value computed on the
 AE2451.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2451.degrees latitude (g = 980.6199 gals.).
 AE2451
 AE2451.The modeled gravity was interpolated from observed gravity values.
 AE2451
 AE2451. The following values were computed from the NAD 83(2011) position.
 AE2451
 AE2451;                    North         East     Units Scale Factor Converg.
 AE2451;SPC MD       -   172,760.397   424,793.173   MT  0.99996813   +0 10 48.7
 AE2451;SPC MD       -   566,798.07  1,393,675.60   sFT  0.99996813   +0 10 48.7
 AE2451;UTM  18      - 4,342,880.708   352,140.153   MT  0.99986919   -1 04 59.9
 AE2451
 AE2451!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2451!SPC MD       -   1.00000180  x   0.99996813  =   0.99996993
 AE2451!UTM  18      -   1.00000180  x   0.99986919  =   0.99987099
 AE2451
 AE2451_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5214042880(NAD 83)
 AE2451
 AE2451|---------------------------------------------------------------------|
 AE2451| PID    Reference Object                     Distance      Geod. Az  |
 AE2451|                                                           dddmmss.s |
 AE2451| AE2456 TBM PP 5075                         308.648 METERS 05607     |
 AE2451|---------------------------------------------------------------------|
 AE2451
 AE2451                          SUPERSEDED SURVEY CONTROL
 AE2451
 AE2451  NAD 83(2007)-  39 13 21.48013(N)    076 42 46.37033(W) AD(2002.00) 0
 AE2451  ELLIP H (02/10/07)  -11.479  (m)                       GP(2002.00)    
 AE2451  ELLIP H (08/30/02)  -11.472  (m)                       GP(       ) 4 2
 AE2451  NAD 83(1991)-  39 13 21.47994(N)    076 42 46.36978(W) AD(       ) 1
 AE2451  ELLIP H (08/28/97)  -11.542  (m)                       GP(       ) 3 2
 AE2451  NAVD 88 (08/28/97)   21.0    (m)  GEOID96  model used  GPS OBS        
 AE2451
 AE2451.Superseded values are not recommended for survey control.
 AE2451
 AE2451.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2451.See file dsdata.pdf to determine how the superseded data were derived.
 AE2451
 AE2451_MARKER: DD = SURVEY DISK
 AE2451_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2451_STAMPING: NO. GIS-87 1995
 AE2451_MARK LOGO: MD-005
 AE2451_PROJECTION: FLUSH
 AE2451_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2451_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2451+STABILITY: SURFACE MOTION
 AE2451_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2451+SATELLITE: SATELLITE OBSERVATIONS - February 01, 1996
 AE2451
 AE2451  HISTORY     - Date     Condition        Report By
 AE2451  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2451  HISTORY     - 19960201 GOOD             MCCRON
 AE2451
 AE2451                          STATION DESCRIPTION
 AE2451
 AE2451'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2451'STATION IS LOCATED 8.0 MI (12.87 KM) SOUTHWEST OF THE CENTER OF
 AE2451'BALTIMORE AND 0.5 MI (0.80 KM) NORTHEAST OF ELKRIDGE. TO REACH THE
 AE2451'STATION FROM THE I-195 OVERPASS OVER ROUTE 1 (WASHINGTON BLVD) GO
 AE2451'SOUTH ON ROUTE 1 FOR 0.1 MI (0.16 KM) TO SOUTH STREET.  TURN RIGHT AND
 AE2451'GO NORTHWEST ON SOUTH STREET AND ROLLING ROAD FOR 0.6 MI (0.97 KM) TO
 AE2451'A T INTERSECTION.  TURN LEFT AND CONTINUE ON ROLLING ROAD SOUTH FOR
 AE2451'0.15 MI (0.24 KM) TO THE RAILROAD TRACKS.  FROM THIS POINT YOU MUST
 AE2451'WALK SOUTHWEST ALONG THE TRACKS TO WHERE THE NORTH AND SOUTH RAILS
 AE2451'SPLIT, FOLLOW THE SOUTH RAIL TO THE NORTH END OF THE THOMAS VIADUCT
 AE2451'AND THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10
 AE2451'INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 36.0
 AE2451'FT (10.97 M) NORTH OF THE NORTHWEST CORNER OF THE VIADUCT MONUMENT,
 AE2451'31.9 FT (9.72 M) WEST OF THE WEST RAIL OF THE SOUTHBOUND TRACK, 33.5
 AE2451'FT (10.21 M) NORTHWEST OF A 4 FT (1.22 M) HIGH CONCRETE POST, AND 47.4
 AE2451'FT (14.45 M) SOUTH OF ANOTHER 4 FT (1.22 M) HIGH CONCRETE POST.
 AE2451
 AE2451                          STATION RECOVERY (1996)
 AE2451
 AE2451'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2451'STATION IS LOCATED 8.0 MI (12.9 KM) SOUTHWEST OF THE CENTER OF
 AE2451'BALTIMORE AND 0.5 MI (0.8 KM) NORTHEAST OF ELKRIDGE.  TO REACH THE
 AE2451'STATION FROM THE I-195 OVERPASS OVER ROUTE 1 (WASHINGTON BLVD) GO
 AE2451'SOUTH ON ROUTE 1 FOR 0.1 MI (0.2 KM) TO SOUTH STREET.  TURN RIGHT AND
 AE2451'GO NORTHWEST ON SOUTH STREET AND ROLLING ROAD FOR 0.6 MI (1.0 KM) TO A
 AE2451'T INTERSECTION.  TURN LEFT AND CONTINUE ON ROLLING ROAD SOUTH FOR 0.15
 AE2451'MI (0.24 KM) TO THE RAILROAD TRACKS.  FROM THIS POINT YOU MUST WALK
 AE2451'SOUTHWEST ALONG THE TRACKS TO WHERE THE NORTH AND SOUTH RAILS SPLIT,
 AE2451'FOLLOW THE SOUTH RAIL TO THE NORTH END OF THE THOMAS VIADUCT AND THE
 AE2451'STATION ON THE RIGHT.  STATION MARK IS SET IN THE TOP OF A 10 INCH
 AE2451'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 36.0 FT
 AE2451'(11.0 M) NORTH OF THE NORTHWEST CORNER OF THE VIADUCT MONUMENT, 31.9
 AE2451'FT (9.7 M) WEST OF THE WEST RAIL OF THE SOUTHBOUND TRACK, 33.5 FT
 AE2451'(10.2 M) NORTHWEST OF A 4 FT (1.2 M) HIGH CONCRETE POST, AND 47.4 FT
 AE2451'(14.4 M) SOUTH OF ANOTHER 4 FT (1.2 M) HIGH CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2448 ***********************************************************************
 AE2448  DESIGNATION -  GIS 88
 AE2448  PID         -  AE2448
 AE2448  STATE/COUNTY-  MD/BALTIMORE
 AE2448  COUNTRY     -  US
 AE2448  USGS QUAD   -  ELLICOTT CITY (2016)
 AE2448
 AE2448                         *CURRENT SURVEY CONTROL
 AE2448  ______________________________________________________________________
 AE2448* NAD 83(2011) POSITION- 39 15 45.24148(N) 076 47 00.07497(W)   ADJUSTED
 AE2448* NAD 83(2011) ELLIP HT-    23.376 (meters)        (06/27/12)   ADJUSTED
 AE2448* NAD 83(2011) EPOCH   -  2010.00
 AE2448* NAVD 88 ORTHO HEIGHT -    55.616 (meters)      182.47  (feet) ADJUSTED
 AE2448  ______________________________________________________________________
 AE2448  GEOID HEIGHT    -        -32.267 (meters)                     GEOID18
 AE2448  NAD 83(2011) X  -  1,130,582.058 (meters)                     COMP
 AE2448  NAD 83(2011) Y  - -4,813,969.874 (meters)                     COMP
 AE2448  NAD 83(2011) Z  -  4,014,943.251 (meters)                     COMP
 AE2448  LAPLACE CORR    -         -3.56  (seconds)                    DEFLEC18
 AE2448  DYNAMIC HEIGHT  -         55.587 (meters)      182.37  (feet) COMP
 AE2448  MODELED GRAVITY -    980,103.1   (mgal)                       NAVD 88
 AE2448
 AE2448  VERT ORDER      -  SECOND    CLASS II
 AE2448
 AE2448  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2448  Standards:
 AE2448         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2448            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2448  -------------------------------------------------------------------
 AE2448  NETWORK    0.73   1.16           0.34   0.23   0.59     -0.11123662
 AE2448  -------------------------------------------------------------------
 AE2448  Click here for local accuracies and other accuracy information.
 AE2448
 AE2448.The horizontal coordinates were established by GPS observations
 AE2448.and adjusted by the National Geodetic Survey in June 2012.
 AE2448
 AE2448.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2448.been affixed to the stable North American tectonic plate. See 
 AE2448.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2448
 AE2448.The horizontal coordinates are valid at the epoch date displayed above
 AE2448.which is a decimal equivalence of Year/Month/Day.
 AE2448
 AE2448.The orthometric height was determined by differential leveling and
 AE2448.adjusted by the NATIONAL GEODETIC SURVEY
 AE2448.in February 1998.
 AE2448
 AE2448.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2448.GEOID18 height accuracy estimate available here.
 AE2448
 AE2448.Click photographs - Photos may exist for this station.
 AE2448
 AE2448.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2448
 AE2448.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2448
 AE2448.The ellipsoidal height was determined by GPS observations
 AE2448.and is referenced to NAD 83.
 AE2448
 AE2448.The dynamic height is computed by dividing the NAVD 88
 AE2448.geopotential number by the normal gravity value computed on the
 AE2448.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2448.degrees latitude (g = 980.6199 gals.).
 AE2448
 AE2448.The modeled gravity was interpolated from observed gravity values.
 AE2448
 AE2448. The following values were computed from the NAD 83(2011) position.
 AE2448
 AE2448;                    North         East     Units Scale Factor Converg.
 AE2448;SPC MD       -   177,176.915   418,697.160   MT  0.99997258   +0 08 09.5
 AE2448;SPC MD       -   581,287.93  1,373,675.60   sFT  0.99997258   +0 08 09.5
 AE2448;UTM  18      - 4,347,430.233   346,143.601   MT  0.99989147   -1 07 43.9
 AE2448
 AE2448!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2448!SPC MD       -   0.99999633  x   0.99997258  =   0.99996891
 AE2448!UTM  18      -   0.99999633  x   0.99989147  =   0.99988780
 AE2448
 AE2448:                Primary Azimuth Mark                     Grid Az
 AE2448:SPC MD       -  GIS 89                                   302 30 33.5
 AE2448:UTM  18      -  GIS 89                                   303 46 26.9
 AE2448
 AE2448_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4614347430(NAD 83)
 AE2448
 AE2448|---------------------------------------------------------------------|
 AE2448| PID    Reference Object                     Distance      Geod. Az  |
 AE2448|                                                           dddmmss.s |
 AE2448| AE2449 GIS 89                              APPROX. 1.1 KM 3023843.0 |
 AE2448|---------------------------------------------------------------------|
 AE2448
 AE2448                          SUPERSEDED SURVEY CONTROL
 AE2448
 AE2448  NAD 83(2007)-  39 15 45.24176(N)    076 47 00.07582(W) AD(2002.00) 0
 AE2448  ELLIP H (02/10/07)   23.391  (m)                       GP(2002.00)    
 AE2448  ELLIP H (08/30/02)   23.395  (m)                       GP(       ) 4 2
 AE2448  NAD 83(1991)-  39 15 45.24149(N)    076 47 00.07533(W) AD(       ) 1
 AE2448  ELLIP H (08/28/97)   23.325  (m)                       GP(       ) 3 2
 AE2448  NAVD 88 (08/28/97)   55.6    (m)  GEOID96  model used  GPS OBS        
 AE2448
 AE2448.Superseded values are not recommended for survey control.
 AE2448
 AE2448.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2448.See file dsdata.pdf to determine how the superseded data were derived.
 AE2448
 AE2448_MARKER: DD = SURVEY DISK
 AE2448_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2448_STAMPING: NO. GIS-88 1995
 AE2448_MARK LOGO: MD-005
 AE2448_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2448_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2448+STABILITY: SURFACE MOTION
 AE2448_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2448+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2013
 AE2448
 AE2448  HISTORY     - Date     Condition        Report By
 AE2448  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2448  HISTORY     - 19960201 GOOD             MCCRON
 AE2448  HISTORY     - 20030922 GOOD             USPSQD
 AE2448  HISTORY     - 20061001 GOOD             GEOCAC
 AE2448  HISTORY     - 20131204 GOOD             INDIV
 AE2448
 AE2448                          STATION DESCRIPTION
 AE2448
 AE2448'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2448'STATION IS LOCATED ABOUT 9.5 MI (15.29 KM) SOUTHWEST OF THE CENTER OF
 AE2448'BALTIMORE AND 1.0 MI (1.61 KM) EAST OF ELLICOTT CITY. TO REACH THE
 AE2448'STATION FROM THE CENTER OF THE ROUTE 144 (FREDERICK ROAD) BRIDGE OVER
 AE2448'THE PATAPSCO RIVER IN ELLICOTT CITY GO EAST ON ROUTE 144 FOR 0.75 MI
 AE2448'(1.21 KM) TO THE EASTERNMOST INTERSECTION OF NINE MILE CIRCLE AND
 AE2448'ROUTE 144 AND THE STATION ON THE LEFT IN A GRASSY LAWN AREA. STATION
 AE2448'MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET
 AE2448'FLUSH WITH THE GROUND.  IT IS 41.8 FT (12.74 M) SOUTH OF THE
 AE2448'CENTERLINE OF NINE MILE CIRCLE, 34.3 FT (10.45 M) NORTH OF THE NORTH
 AE2448'EDGE OF PAVE OF ROUTE 144, 58.9 FT (17.95 M) WEST OF POWER POLE NO.
 AE2448'495118, 89.5 FT (27.28 M) SOUTHEAST OF POWER POLE NO. 511235, AND 55.4
 AE2448'FT (16.89 M) WEST OF A FIRE HYDRANT.
 AE2448
 AE2448                          STATION RECOVERY (1996)
 AE2448
 AE2448'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2448'STATION IS LOCATED ABOUT 9.5 MI (15.3 KM) SOUTHWEST OF THE CENTER OF
 AE2448'BALTIMORE AND 1.0 MI (1.6 KM) EAST OF ELLICOTT CITY.  TO REACH THE
 AE2448'STATION FROM THE CENTER OF THE ROUTE 144 (FREDERICK ROAD) BRIDGE OVER
 AE2448'THE PATAPSCO RIVER IN ELLICOTT CITY GO EAST ON ROUTE 144 FOR 0.75 MI
 AE2448'(1.21 KM) TO THE EASTERNMOST INTERSECTION OF NINE MILE CIRCLE AND
 AE2448'ROUTE 144 AND THE STATION ON THE LEFT IN A GRASSY LAWN AREA.  STATION
 AE2448'MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET
 AE2448'FLUSH WITH THE GROUND.  IT IS 41.8 FT (12.7 M) SOUTH OF THE CENTERLINE
 AE2448'OF NINE MILE CIRCLE, 34.3 FT (10.5 M) NORTH OF THE NORTH EDGE OF PAVE
 AE2448'OF ROUTE 144, 58.9 FT (18.0 M) WEST OF POWER POLE NO. 495118, 89.5 FT
 AE2448'(27.3 M) SOUTHEAST OF POWER POLE NO.  511235, AND 55.4 FT (16.9 M)
 AE2448'WEST OF A FIRE HYDRANT.
 AE2448
 AE2448                          STATION RECOVERY (2003)
 AE2448
 AE2448'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 AE2448'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 3.3 FEET (1 M)
 AE2448'SOUTH OF AN ORANGE FIBERGLASS WITNESS POST.
 AE2448
 AE2448                          STATION RECOVERY (2006)
 AE2448
 AE2448'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 AE2448'LOCATED GENERALLY AS DESCRIBED IN THE GRASSY AREA SOUTH OF NINE MILE
 AE2448'CIRCLE AND NORTH OF FREDERICK ROAD, AND APPROXIMATELY OPPOSITE AN
 AE2448'ELECTRIC POWER SUBSTATION ON THE SOUTH SIDE OF FREDERICK ROAD.
 AE2448'
 AE2448'STATION IS ABOUT 13 FEET NORTH OF A WOOD RAIL FENCE AND APPROXIMATELY
 AE2448'OPPOSITE THE EAST SIDE OF THE HOUSE AT 2804 NINE MILE CIRCLE.
 AE2448'
 AE2448'NO WITNESS POST WAS OBSERVED.
 AE2448
 AE2448                          STATION RECOVERY (2013)
 AE2448
 AE2448'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (WRA)
 AE2448'DESCRIPTION IS ADEQUATE. POINT WAS FOUND HOWEVER, A WHITE PINE WAS
 AE2448'PLANTED NEAR MONUMENT AND IS GROWING OVER POINT. SHOULD HAVE AN
 AE2448'ALTERNATE POINT AS THIS MAY BE UNSUITABLE FOR GPS SOON. ESPECIALLY
 AE2448'DURING SUMMER MONTHS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS4096 ***********************************************************************
 DS4096  HT_MOD      -  This is a Height Modernization Survey Station.
 DS4096  DESIGNATION -  GIS 89 RESET
 DS4096  PID         -  DS4096
 DS4096  STATE/COUNTY-  MD/BALTIMORE
 DS4096  COUNTRY     -  US
 DS4096  USGS QUAD   -  ELLICOTT CITY (2016)
 DS4096
 DS4096                         *CURRENT SURVEY CONTROL
 DS4096  ______________________________________________________________________
 DS4096* NAD 83(2011) POSITION- 39 16 04.43169(N) 076 47 36.94067(W)   ADJUSTED
 DS4096* NAD 83(2011) ELLIP HT-     6.006 (meters)        (08/29/25)   ADJUSTED
 DS4096* NAD 83(2011) EPOCH   -  2010.00
 DS4096* NAVD 88 ORTHO HEIGHT -    38.25  (meters)      125.5   (feet) GPS OBS
 DS4096  ______________________________________________________________________
 DS4096  GEOID HEIGHT    -        -32.244 (meters)                     GEOID18
 DS4096  NAD 83(2011) X  -  1,129,632.994 (meters)                     COMP
 DS4096  NAD 83(2011) Y  - -4,813,794.117 (meters)                     COMP
 DS4096  NAD 83(2011) Z  -  4,015,390.451 (meters)                     COMP
 DS4096  LAPLACE CORR    -         -3.39  (seconds)                    DEFLEC18
 DS4096
 DS4096  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS4096  Standards:
 DS4096         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS4096            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS4096  -------------------------------------------------------------------
 DS4096  NETWORK    0.80   1.98           0.36   0.29   1.01      0.05578658
 DS4096  -------------------------------------------------------------------
 DS4096  Click here for local accuracies and other accuracy information.
 DS4096
 DS4096.The horizontal coordinates were established by GPS observations
 DS4096.and adjusted by the MD DOT HIGHWAY ADMIN in August 2025.
 DS4096
 DS4096.Refers to NAD 83 (2011) epoch 2010.00 coordinates where the reference 
 DS4096.frame has been affixed to the stable North American tectonic plate 
 DS4096
 DS4096.The horizontal coordinates are valid at the epoch date displayed above
 DS4096.which is a decimal equivalence of Year/Month/Day.
 DS4096
 DS4096.The orthometric height was determined by GPS observations and a
 DS4096.high-resolution geoid model using precise GPS observation and
 DS4096.processing techniques.
 DS4096
 DS4096.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS4096.GEOID18 height accuracy estimate available here.
 DS4096
 DS4096.Click photographs - Photos may exist for this station.
 DS4096
 DS4096.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS4096
 DS4096.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS4096
 DS4096.The ellipsoidal height was determined by GPS observations
 DS4096.and is referenced to NAD 83.
 DS4096
 DS4096. The following values were computed from the NAD 83(2011) position.
 DS4096
 DS4096;                    North         East     Units Scale Factor Converg.
 DS4096;SPC MD       -   177,766.658   417,812.041   MT  0.99997321   +0 07 46.4
 DS4096;SPC MD       -   583,222.78  1,370,771.67   sFT  0.99997321   +0 07 46.4
 DS4096;UTM  18      - 4,348,039.322   345,271.787   MT  0.99989478   -1 08 07.7
 DS4096
 DS4096!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS4096!SPC MD       -   0.99999906  x   0.99997321  =   0.99997227
 DS4096!UTM  18      -   0.99999906  x   0.99989478  =   0.99989384
 DS4096
 DS4096_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4527148039(NAD 83)
 DS4096
 DS4096                          SUPERSEDED SURVEY CONTROL
 DS4096
 DS4096.No superseded survey control is available for this station.
 DS4096
 DS4096_MARKER: DD = SURVEY DISK
 DS4096_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DS4096_STAMPING: GIS STA 89 (RESET)
 DS4096_MARK LOGO: MD-005
 DS4096_PROJECTION: FLUSH
 DS4096_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DS4096+STABILITY: SURFACE MOTION
 DS4096_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS4096+SATELLITE: SATELLITE OBSERVATIONS - February 14, 2025
 DS4096
 DS4096  HISTORY     - Date     Condition        Report By
 DS4096  HISTORY     - 20160609 MONUMENTED       MD-005
 DS4096  HISTORY     - 20250214 GOOD             MDSHA
 DS4096
 DS4096                          STATION DESCRIPTION
 DS4096
 DS4096'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2025 (EBD)
 DS4096'THE MARK IS LOCATED ABOUT 9.1 MI (14.6 KM) EAST-NORTHEAST OF
 DS4096'CLARKSVILLE, 5.6 MI (9.0 KM) WEST-NORTHWEST OF RELAY AND IN THE TOWN
 DS4096'OF ELLICOTT CITY, MD.
 DS4096'
 DS4096'TO REACH THE MARK FROM THE INTERSECTION OF OLD FREDERICK ROAD AND
 DS4096'FREDERICK ROAD(MD 144)PROCEED WEST ON FREDERICK ROAD FOR 1.46 KM (0.91
 DS4096'MI) TO THE INTERSECTION WITH OELLA AVENUE.  TURN RIGHT ON OELLA AVENUE
 DS4096'AND PROCEED FOR 0.03 KM (0.02 MI) TO THE MARK ON THE LEFT.
 DS4096'
 DS4096'THE MARK IS 100.0 FT (30.5 M) NORTH-NORTHEAST OF THE CENTERLINE OF
 DS4096'FREDERICK ROAD, 47.8 FT (14.6 M) SOUTH-SOUTHWEST OF A SEWER MANHOLE,
 DS4096'40.3 FT (12.3 M) SOUTHEAST OF A UTILITY POLE NUMBERED G AND E 544368,
 DS4096'29.5 FT (9.0 M) SOUTH OF A METAL SIGN POST FOR MARYLAND ELLICOTT'S
 DS4096'MILLS, 17.0 FT (5.2 M) WEST OF THE CENTERLINE OF OELLA ROAD SET IN THE
 DS4096'TOP OF A 6-IN (15 CM) ROUND CONCRETE POST AND ABOUT 0.5 FT (15 CM)
 DS4096'HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AC7692 ***********************************************************************
 AC7692  DESIGNATION -  GIS 9
 AC7692  PID         -  AC7692
 AC7692  STATE/COUNTY-  MD/BALTIMORE
 AC7692  COUNTRY     -  US
 AC7692  USGS QUAD   -  MIDDLE RIVER (2016)
 AC7692
 AC7692                         *CURRENT SURVEY CONTROL
 AC7692  ______________________________________________________________________
 AC7692* NAD 83(2011) POSITION- 39 17 23.76236(N) 076 26 28.27457(W)   ADJUSTED
 AC7692* NAD 83(2011) ELLIP HT-   -26.825 (meters)        (06/27/12)   ADJUSTED
 AC7692* NAD 83(2011) EPOCH   -  2010.00
 AC7692* NAVD 88 ORTHO HEIGHT -     6.188 (meters)       20.30  (feet) ADJUSTED
 AC7692  ______________________________________________________________________
 AC7692  GEOID HEIGHT    -        -33.017 (meters)                     GEOID18
 AC7692  NAD 83(2011) X  -  1,158,850.406 (meters)                     COMP
 AC7692  NAD 83(2011) Y  - -4,805,224.713 (meters)                     COMP
 AC7692  NAD 83(2011) Z  -  4,017,263.423 (meters)                     COMP
 AC7692  LAPLACE CORR    -         -1.60  (seconds)                    DEFLEC18
 AC7692  DYNAMIC HEIGHT  -          6.185 (meters)       20.29  (feet) COMP
 AC7692  MODELED GRAVITY -    980,109.0   (mgal)                       NAVD 88
 AC7692
 AC7692  VERT ORDER      -  THIRD
 AC7692
 AC7692  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AC7692  Standards:
 AC7692         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AC7692            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AC7692  -------------------------------------------------------------------
 AC7692  NETWORK    0.63   1.23           0.28   0.23   0.63      0.02943960
 AC7692  -------------------------------------------------------------------
 AC7692  Click here for local accuracies and other accuracy information.
 AC7692
 AC7692.The horizontal coordinates were established by GPS observations
 AC7692.and adjusted by the National Geodetic Survey in June 2012.
 AC7692
 AC7692.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AC7692.been affixed to the stable North American tectonic plate. See 
 AC7692.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AC7692
 AC7692.The horizontal coordinates are valid at the epoch date displayed above
 AC7692.which is a decimal equivalence of Year/Month/Day.
 AC7692
 AC7692.The orthometric height was determined by differential leveling and
 AC7692.adjusted by the NATIONAL GEODETIC SURVEY
 AC7692.in February 1998.
 AC7692
 AC7692.Significant digits in the geoid height do not necessarily reflect accuracy.
 AC7692.GEOID18 height accuracy estimate available here.
 AC7692
 AC7692.Click photographs - Photos may exist for this station.
 AC7692
 AC7692.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AC7692
 AC7692.The Laplace correction was computed from DEFLEC18 derived deflections.
 AC7692
 AC7692.The ellipsoidal height was determined by GPS observations
 AC7692.and is referenced to NAD 83.
 AC7692
 AC7692.The dynamic height is computed by dividing the NAVD 88
 AC7692.geopotential number by the normal gravity value computed on the
 AC7692.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AC7692.degrees latitude (g = 980.6199 gals.).
 AC7692
 AC7692.The modeled gravity was interpolated from observed gravity values.
 AC7692
 AC7692. The following values were computed from the NAD 83(2011) position.
 AC7692
 AC7692;                    North         East     Units Scale Factor Converg.
 AC7692;SPC MD       -   180,340.498   448,208.285   MT  0.99997592   +0 21 02.6
 AC7692;SPC MD       -   591,667.12  1,470,496.68   sFT  0.99997592   +0 21 02.6
 AC7692;UTM  18      - 4,349,941.625   375,713.340   MT  0.99979020   -0 54 45.9
 AC7692
 AC7692!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AC7692!SPC MD       -   1.00000421  x   0.99997592  =   0.99998013
 AC7692!UTM  18      -   1.00000421  x   0.99979020  =   0.99979441
 AC7692
 AC7692_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7571349941(NAD 83)
 AC7692
 AC7692                          SUPERSEDED SURVEY CONTROL
 AC7692
 AC7692  NAD 83(2007)-  39 17 23.76262(N)    076 26 28.27535(W) AD(2002.00) 0
 AC7692  ELLIP H (02/10/07)  -26.807  (m)                       GP(2002.00)    
 AC7692  ELLIP H (08/30/02)  -26.783  (m)                       GP(       ) 4 2
 AC7692  NAD 83(1991)-  39 17 23.76210(N)    076 26 28.27501(W) AD(       ) 1
 AC7692  ELLIP H (04/08/97)  -26.852  (m)                       GP(       ) 3 1
 AC7692  NAVD 88 (04/08/97)    6.2    (m)  GEOID93  model used  GPS OBS        
 AC7692
 AC7692.Superseded values are not recommended for survey control.
 AC7692
 AC7692.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AC7692.See file dsdata.pdf to determine how the superseded data were derived.
 AC7692
 AC7692_MARKER: DD = SURVEY DISK
 AC7692_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AC7692_STAMPING: NO. GIS-9 1995
 AC7692_MARK LOGO: MD-005
 AC7692_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AC7692_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AC7692+STABILITY: SURFACE MOTION
 AC7692_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AC7692+SATELLITE: SATELLITE OBSERVATIONS - April 14, 2006
 AC7692
 AC7692  HISTORY     - Date     Condition        Report By
 AC7692  HISTORY     - 1995     MONUMENTED       MCCRON
 AC7692  HISTORY     - 20030501 GOOD             DMW
 AC7692  HISTORY     - 20060414 GOOD             GPSSS
 AC7692
 AC7692                          STATION DESCRIPTION
 AC7692
 AC7692'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AC7692'STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) EAST OF THE CENTER OF
 AC7692'BALTIMORE AND ABOUT 2.0 MI (3.2 KM) SOUTHEAST OF ESSEX AT HYDE PARK.
 AC7692'TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 36 TO ROUTE 702
 AC7692'(SOUTHEAST BLVD). FROM THE ROUTE 702 OVERPASS OVER EASTERN BLVD GO
 AC7692'SOUTH ON RT 702 FOR 1.6 MI (2.6 KM) TO HYDE PARK ROAD. TURN RIGHT ON
 AC7692'HYDE PARK RD AND GO 0.65 MI (1.05 KM) TO INTERSECTION WITH MAPLE AVE
 AC7692'AND STATION ON THE LEFT. STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) EAST
 AC7692'OF BALTIMORE AND ABOUT 2.0 MI (3.2 KM) NORTHEAST OF DUNDALK. TO REACH
 AC7692'STATION FROM I-695 (BELTWAY) TAKE EXIT 41 TO COVE ROAD AND NORTH POINT
 AC7692'BLVD (ROUTE 151). TURN RIGHT AND GO NORTH ON NORTH POINT BLVD FOR 0.60
 AC7692'MI (0.97 KM) TO TRAPPE ROAD. TURN RIGHT ON
 AC7692
 AC7692                          STATION RECOVERY (2003)
 AC7692
 AC7692'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (DMM)
 AC7692'RECOVERED IN GOOD CONDITION.
 AC7692
 AC7692                          STATION RECOVERY (2006)
 AC7692
 AC7692'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (BD)
 AC7692'RECOVERED BY BRIAN DIETZ, PLS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6420 ***********************************************************************
 DG6420  DESIGNATION -  GIS 9
 DG6420  PID         -  DG6420
 DG6420  STATE/COUNTY-  MD/TALBOT
 DG6420  COUNTRY     -  US
 DG6420  USGS QUAD   -  SAINT MICHAELS (2016)
 DG6420
 DG6420                         *CURRENT SURVEY CONTROL
 DG6420  ______________________________________________________________________
 DG6420* NAD 83(1986) POSITION- 38 47 09.56   (N) 076 12 59.27   (W)   HD_HELD1
 DG6420* NAVD 88 ORTHO HEIGHT -     1.181 (meters)        3.87  (feet) ADJUSTED
 DG6420  ______________________________________________________________________
 DG6420  GEOID HEIGHT    -        -34.349 (meters)                     GEOID18
 DG6420  DYNAMIC HEIGHT  -          1.180 (meters)        3.87  (feet) COMP
 DG6420  MODELED GRAVITY -    980,045.2   (mgal)                       NAVD 88
 DG6420
 DG6420  VERT ORDER      -  SECOND    CLASS I
 DG6420
 DG6420.The horizontal coordinates were determined by differentially corrected
 DG6420.hand held GPS observations or other comparable positioning techniques
 DG6420.and have an estimated accuracy of +/- 3 meters.
 DG6420
 DG6420.The orthometric height was determined by differential leveling and
 DG6420.adjusted by the NATIONAL GEODETIC SURVEY
 DG6420.in September 2004.
 DG6420
 DG6420.No vertical observational check was made to the station.
 DG6420
 DG6420.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6420.GEOID18 height accuracy estimate available here.
 DG6420
 DG6420.Click photographs - Photos may exist for this station.
 DG6420
 DG6420.The dynamic height is computed by dividing the NAVD 88
 DG6420.geopotential number by the normal gravity value computed on the
 DG6420.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6420.degrees latitude (g = 980.6199 gals.).
 DG6420
 DG6420.The modeled gravity was interpolated from observed gravity values.
 DG6420
 DG6420;                    North         East    Units  Estimated Accuracy
 DG6420;SPC MD       -   124,541.4     468,074.7     MT  (+/- 3 meters HH1 GPS) 
 DG6420
 DG6420_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9434593730(NAD 83)
 DG6420
 DG6420                          SUPERSEDED SURVEY CONTROL
 DG6420
 DG6420.No superseded survey control is available for this station.
 DG6420
 DG6420_MARKER: DH = HORIZONTAL CONTROL DISK
 DG6420_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6420_STAMPING: NO GIS 9 1995
 DG6420_MARK LOGO: MD1370
 DG6420_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6420_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6420+STABILITY: SURFACE MOTION
 DG6420_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6420+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 DG6420
 DG6420  HISTORY     - Date     Condition        Report By
 DG6420  HISTORY     - 1995     MONUMENTED       MCCRON
 DG6420  HISTORY     - 19991213 GOOD             MDSHA
 DG6420
 DG6420                          STATION DESCRIPTION
 DG6420
 DG6420'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG6420'THE MARK IS LOCATED IN THE TOWN OF SAINT MICHAELS.  TO REACH THE MARK
 DG6420'FROM THE POST OFFICE IN SAINT MICHAELS, PROCEED SOUTHEAST ALONG
 DG6420'MARYLAND STATE HIGHWAY 33 FOR 0.35 MILES (0.56 KM) TO SEYMOUR AVENUE.
 DG6420'TURN LEFT AND PROCEED NORTHEAST ALONG SEYMOUR AVENUE FOR 0.5 MILES
 DG6420'(0.8 KM) TO A T-INTERSECTION WITH RIVERVIEW TERRACE.  TURN LEFT AND
 DG6420'PROCEED NORTHWEST ALONG RIVERVIEW TERRACE FOR 0.25 MILES (0.40 KM) TO
 DG6420'THE MARK LOCATED IN THE GRASS AREA BETWEEN THE ROADS END AND THE WATER
 DG6420'LINE.  IT IS 20.4 FEET (6.2 M) NORTH-NORTHWEST OF THE CENTER OF A
 DG6420'SANITARY SEWER MANHOLE COVER, 66.0 FEET (20.1 M) WEST OF POWER POLE
 DG6420'NUMBER 29370-08626, 1.8 FEET (0.5 M) SOUTHEAST OF A CARSONITE WITNESS
 DG6420'POST AND 7.2 FEET (2.2 M) WEST OF THE SOUTHWEST SUPPORT POST FOR A
 DG6420'ROAD ENDS BARRICADE.  IT IS A TOSM DISK SET IN THE TOP OF A 7 INCH (18
 DG6420'CM) ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND AND LEVEL WITH THE
 DG6420'SURFACE OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2467 ***********************************************************************
 AE2467  DESIGNATION -  GIS 90
 AE2467  PID         -  AE2467
 AE2467  STATE/COUNTY-  MD/BALTIMORE
 AE2467  COUNTRY     -  US
 AE2467  USGS QUAD   -  FINKSBURG (2016)
 AE2467
 AE2467                         *CURRENT SURVEY CONTROL
 AE2467  ______________________________________________________________________
 AE2467* NAD 83(2011) POSITION- 39 23 19.42517(N) 076 52 37.67785(W)   ADJUSTED
 AE2467* NAD 83(2011) ELLIP HT-   113.998 (meters)        (06/27/12)   ADJUSTED
 AE2467* NAD 83(2011) EPOCH   -  2010.00
 AE2467* NAVD 88 ORTHO HEIGHT -   146.1   (meters)      479.    (feet) GPS OBS
 AE2467  ______________________________________________________________________
 AE2467  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE2467  GEOID HEIGHT    -        -32.052 (meters)                     GEOID96
 AE2467  GEOID HEIGHT    -        -32.044 (meters)                     GEOID18
 AE2467  NAD 83(2011) X  -  1,120,701.891 (meters)                     COMP
 AE2467  NAD 83(2011) Y  - -4,807,237.434 (meters)                     COMP
 AE2467  NAD 83(2011) Z  -  4,025,835.798 (meters)                     COMP
 AE2467  LAPLACE CORR    -         -2.13  (seconds)                    DEFLEC18
 AE2467
 AE2467  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2467  Standards:
 AE2467         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2467            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2467  -------------------------------------------------------------------
 AE2467  NETWORK    0.67   1.08           0.30   0.24   0.55     -0.14938881
 AE2467  -------------------------------------------------------------------
 AE2467  Click here for local accuracies and other accuracy information.
 AE2467
 AE2467.The horizontal coordinates were established by GPS observations
 AE2467.and adjusted by the National Geodetic Survey in June 2012.
 AE2467
 AE2467.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2467.been affixed to the stable North American tectonic plate. See 
 AE2467.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2467
 AE2467.The horizontal coordinates are valid at the epoch date displayed above
 AE2467.which is a decimal equivalence of Year/Month/Day.
 AE2467
 AE2467.The orthometric height was determined by GPS observations and a
 AE2467.high-resolution geoid model.
 AE2467
 AE2467.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2467.GEOID18 height accuracy estimate available here.
 AE2467
 AE2467.Click photographs - Photos may exist for this station.
 AE2467
 AE2467.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2467
 AE2467.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2467
 AE2467.The ellipsoidal height was determined by GPS observations
 AE2467.and is referenced to NAD 83.
 AE2467
 AE2467. The following values were computed from the NAD 83(2011) position.
 AE2467
 AE2467;                    North         East     Units Scale Factor Converg.
 AE2467;SPC MD       -   191,168.319   410,584.954   MT  0.99998986   +0 04 37.6
 AE2467;SPC MD       -   627,191.39  1,347,060.80   sFT  0.99998986   +0 04 37.6
 AE2467;UTM  18      - 4,361,596.491   338,343.248   MT  0.99992176   -1 11 29.2
 AE2467
 AE2467!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2467!SPC MD       -   0.99998212  x   0.99998986  =   0.99997198
 AE2467!UTM  18      -   0.99998212  x   0.99992176  =   0.99990388
 AE2467
 AE2467_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3834361596(NAD 83)
 AE2467
 AE2467                          SUPERSEDED SURVEY CONTROL
 AE2467
 AE2467  NAD 83(2007)-  39 23 19.42532(N)    076 52 37.67862(W) AD(2002.00) 0
 AE2467  ELLIP H (02/10/07)  114.016  (m)                       GP(2002.00)    
 AE2467  ELLIP H (08/30/02)  114.025  (m)                       GP(       ) 4 2
 AE2467  NAD 83(1991)-  39 23 19.42465(N)    076 52 37.67880(W) AD(       ) 1
 AE2467  ELLIP H (08/28/97)  113.958  (m)                       GP(       ) 3 2
 AE2467
 AE2467.Superseded values are not recommended for survey control.
 AE2467
 AE2467.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2467.See file dsdata.pdf to determine how the superseded data were derived.
 AE2467
 AE2467_MARKER: DD = SURVEY DISK
 AE2467_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2467_STAMPING: NO. GIS-90 1995
 AE2467_MARK LOGO: MD-005
 AE2467_MAGNETIC: S = STEEL SPIKE IMBEDDED IN MONUMENT
 AE2467_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2467+STABILITY: SURFACE MOTION
 AE2467_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2467+SATELLITE: SATELLITE OBSERVATIONS - May 21, 2004
 AE2467
 AE2467  HISTORY     - Date     Condition        Report By
 AE2467  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2467  HISTORY     - 20040521 GOOD             GEOCAC
 AE2467
 AE2467                          STATION DESCRIPTION
 AE2467
 AE2467'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2467'STATION IS LOCATED ABOUT 4.0 MI (6.44 KM) NORTHWEST OF RANDALLSTOWN.
 AE2467'TO REACH STATION FROM THE CENTER OF THE ROUTE 26 (LIBERTY ROAD)BRIDGE
 AE2467'OVER THE LIBERTY RESERVOIR AT THE BALTIMORE-CARROLL COUNTY LINE, GO
 AE2467'EAST ON ROUTE 26 FOR 1.2 MI (1.93 KM) TO THE INTERSECTION WITH WARDS
 AE2467'CHAPEL ROAD. TURN RIGHT AND GO SOUTH ON WARDS CHAPEL ROAD FOR 0.45 MI
 AE2467'(0.72 KM) TO THE INTERSECTION WITH LIBERTY DAM ROAD. TURN RIGHT AND GO
 AE2467'SOUTHWEST ON LIBERTY DAM ROAD FOR 0.65 MI (1.05 KM) TO THE STATION ON
 AE2467'THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 INCH DIAMETER
 AE2467'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 28.0 FT (8.53 M)
 AE2467'NORTHWEST OF THE CENTERLINE OF THE ROAD, 7.6 FT (2.32 M) NORTHWEST OF
 AE2467'A GUARDRAIL AND 145.5 FT (44.35 M) SOUTHWEST OF A CONCRETE CULVERT
 AE2467'UNDER THE ROAD.
 AE2467
 AE2467                          STATION RECOVERY (2004)
 AE2467
 AE2467'RECOVERY NOTE BY GEOCACHING 2004 (DH)
 AE2467'CURRENT NAD83 COORDS. ARE GOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2454 ***********************************************************************
 AE2454  DESIGNATION -  GIS 91
 AE2454  PID         -  AE2454
 AE2454  STATE/COUNTY-  MD/BALTIMORE
 AE2454  COUNTRY     -  US
 AE2454  USGS QUAD   -  REISTERSTOWN (2016)
 AE2454
 AE2454                         *CURRENT SURVEY CONTROL
 AE2454  ______________________________________________________________________
 AE2454* NAD 83(2011) POSITION- 39 25 24.29942(N) 076 51 43.62733(W)   ADJUSTED
 AE2454* NAD 83(2011) ELLIP HT-   135.854 (meters)        (06/27/12)   ADJUSTED
 AE2454* NAD 83(2011) EPOCH   -  2010.00
 AE2454* NAVD 88 ORTHO HEIGHT -   167.909 (meters)      550.88  (feet) ADJUSTED
 AE2454  ______________________________________________________________________
 AE2454  GEOID HEIGHT    -        -32.055 (meters)                     GEOID18
 AE2454  NAD 83(2011) X  -  1,121,409.716 (meters)                     COMP
 AE2454  NAD 83(2011) Y  - -4,804,579.259 (meters)                     COMP
 AE2454  NAD 83(2011) Z  -  4,028,825.343 (meters)                     COMP
 AE2454  LAPLACE CORR    -         -1.44  (seconds)                    DEFLEC18
 AE2454  DYNAMIC HEIGHT  -        167.821 (meters)      550.59  (feet) COMP
 AE2454  MODELED GRAVITY -    980,098.4   (mgal)                       NAVD 88
 AE2454
 AE2454  VERT ORDER      -  SECOND    CLASS II
 AE2454
 AE2454  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2454  Standards:
 AE2454         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2454            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2454  -------------------------------------------------------------------
 AE2454  NETWORK    0.51   0.92           0.23   0.18   0.47     -0.04663370
 AE2454  -------------------------------------------------------------------
 AE2454  Click here for local accuracies and other accuracy information.
 AE2454
 AE2454.The horizontal coordinates were established by GPS observations
 AE2454.and adjusted by the National Geodetic Survey in June 2012.
 AE2454
 AE2454.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2454.been affixed to the stable North American tectonic plate. See 
 AE2454.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2454
 AE2454.The horizontal coordinates are valid at the epoch date displayed above
 AE2454.which is a decimal equivalence of Year/Month/Day.
 AE2454
 AE2454.The orthometric height was determined by differential leveling and
 AE2454.adjusted by the NATIONAL GEODETIC SURVEY
 AE2454.in February 1998.
 AE2454
 AE2454.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2454.GEOID18 height accuracy estimate available here.
 AE2454
 AE2454.Click photographs - Photos may exist for this station.
 AE2454
 AE2454.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2454
 AE2454.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2454
 AE2454.The ellipsoidal height was determined by GPS observations
 AE2454.and is referenced to NAD 83.
 AE2454
 AE2454.The dynamic height is computed by dividing the NAVD 88
 AE2454.geopotential number by the normal gravity value computed on the
 AE2454.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2454.degrees latitude (g = 980.6199 gals.).
 AE2454
 AE2454.The modeled gravity was interpolated from observed gravity values.
 AE2454
 AE2454. The following values were computed from the NAD 83(2011) position.
 AE2454
 AE2454;                    North         East     Units Scale Factor Converg.
 AE2454;SPC MD       -   195,021.229   411,872.588   MT  0.99999546   +0 05 11.5
 AE2454;SPC MD       -   639,832.15  1,351,285.32   sFT  0.99999546   +0 05 11.5
 AE2454;UTM  18      - 4,365,419.660   339,715.790   MT  0.99991632   -1 10 58.0
 AE2454
 AE2454!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2454!SPC MD       -   0.99997869  x   0.99999546  =   0.99997415
 AE2454!UTM  18      -   0.99997869  x   0.99991632  =   0.99989501
 AE2454
 AE2454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3971565419(NAD 83)
 AE2454
 AE2454                          SUPERSEDED SURVEY CONTROL
 AE2454
 AE2454  NAD 83(2007)-  39 25 24.29957(N)    076 51 43.62809(W) AD(2002.00) 0
 AE2454  ELLIP H (02/10/07)  135.873  (m)                       GP(2002.00)    
 AE2454  ELLIP H (08/30/02)  135.882  (m)                       GP(       ) 4 2
 AE2454  NAD 83(1991)-  39 25 24.29902(N)    076 51 43.62833(W) AD(       ) 1
 AE2454  ELLIP H (08/28/97)  135.819  (m)                       GP(       ) 3 2
 AE2454  NAVD 88 (08/28/97)  167.9    (m)  GEOID96  model used  GPS OBS        
 AE2454
 AE2454.Superseded values are not recommended for survey control.
 AE2454
 AE2454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2454.See file dsdata.pdf to determine how the superseded data were derived.
 AE2454
 AE2454_MARKER: DD = SURVEY DISK
 AE2454_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2454_STAMPING: NO. GIS-91 1995
 AE2454_MARK LOGO: MD-005
 AE2454_PROJECTION: FLUSH
 AE2454_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2454_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2454+STABILITY: SURFACE MOTION
 AE2454_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2454+SATELLITE: SATELLITE OBSERVATIONS - May 31, 2014
 AE2454
 AE2454  HISTORY     - Date     Condition        Report By
 AE2454  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2454  HISTORY     - 19960201 GOOD             MCCRON
 AE2454  HISTORY     - 19990312 GOOD             MD-005
 AE2454  HISTORY     - 20000310 GOOD             GEOMET
 AE2454  HISTORY     - 20140531 GOOD             RODCON
 AE2454
 AE2454                          STATION DESCRIPTION
 AE2454
 AE2454'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2454'STATION IS LOCATED 17.0 MI (27.36 KM) NORTHWEST OF THE CENTER OF
 AE2454'BALTIMORE AND ABOUT 3.5 MI (5.63 KM) SOUTHWEST OF REISTERSTOWN. TO
 AE2454'REACH THE STATION FROM THE CENTER OF THE ROUTE 26 (LIBERTY ROAD)
 AE2454'BRIDGE OVER THE LIBERTY RESERVOIR AT THE BALTIMORE-CARROLL COUNTY LINE
 AE2454'GO EAST ON ROUTE 26 FOR 1.2 MI (1.93 KM) TO THE INTERSECTION WITH
 AE2454'WARDS CHAPEL ROAD.  TURN LEFT AND GO NORTH ON WARDS CHAPEL ROAD FOR
 AE2454'2.35 MI (3.78 KM) TO DEER PARK ROAD.  TURN LEFT AND GO NORTHWEST ON
 AE2454'DEER PARK ROAD FOR 0.5 MI (0.80 KM) TO A T INTERSECTION.  TURN LEFT
 AE2454'AND CONTINUE ON DEER PARK ROAD WESTERLY FOR 0.55 MI (0.89 KM) TO
 AE2454'OAKLAND ROAD. TURN LEFT AND GO SOUTHWEST FOR 0.55 MI (0.89 KM) TO THE
 AE2454'STATION ON THE RIGHT OPPOSITE A DIRT FARM LANE. STATION MARK IS SET IN
 AE2454'THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE2454'GROUND.  IT IS 20.8 FT (6.34 M) NORTHWEST OF THE CENTERLINE OF THE
 AE2454'ROAD, 46.4 FT (14.14 M) NORTHWEST OF POWER POLE NO. 359043, AND 12.7
 AE2454'FT (3.87 M) SOUTHEAST OF A WOODEN FENCE.
 AE2454
 AE2454                          STATION RECOVERY (1996)
 AE2454
 AE2454'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2454'STATION IS LOCATED 17.0 MI (27.4 KM) NORTHWEST OF THE CENTER OF
 AE2454'BALTIMORE AND ABOUT 3.5 MI (5.6 KM) SOUTHWEST OF REISTERSTOWN.  TO
 AE2454'REACH THE STATION FROM THE CENTER OF THE ROUTE 26 (LIBERTY ROAD)
 AE2454'BRIDGE OVER THE LIBERTY RESERVOIR AT THE BALTIMORE-CARROLL COUNTY LINE
 AE2454'GO EAST ON ROUTE 26 FOR 1.2 MI (1.9 KM) TO THE INTERSECTION WITH WARDS
 AE2454'CHAPEL ROAD.  TURN LEFT AND GO NORTH ON WARDS CHAPEL ROAD FOR 2.35 MI
 AE2454'(3.78 KM) TO DEER PARK ROAD.  TURN LEFT AND GO NORTHWEST ON DEER PARK
 AE2454'ROAD FOR 0.5 MI (0.8 KM) TO A T INTERSECTION.  TURN LEFT AND CONTINUE
 AE2454'ON DEER PARK ROAD WESTERLY FOR 0.55 MI (0.89 KM) TO OAKLAND ROAD.
 AE2454'TURN LEFT AND GO SOUTHWEST FOR 0.55 MI (0.89 KM) TO THE STATION ON THE
 AE2454'RIGHT OPPOSITE A DIRT FARM LANE.  STATION MARK IS SET IN THE TOP OF A
 AE2454'10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS
 AE2454'20.8 FT (6.3 M) NORTHWEST OF THE CENTERLINE OF THE ROAD, 46.4 FT (14.1
 AE2454'M) NORTHWEST OF POWER POLE NO.  359043, AND 12.7 FT (3.9 M) SOUTHEAST
 AE2454'OF A WOODEN FENCE.
 AE2454
 AE2454                          STATION RECOVERY (1999)
 AE2454
 AE2454'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1999 (FJJ)
 AE2454'RECOVERIES AS DESCRIBED.
 AE2454
 AE2454                          STATION RECOVERY (2000)
 AE2454
 AE2454'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (MES)
 AE2454'GOOD CONDITION.
 AE2454
 AE2454                          STATION RECOVERY (2014)
 AE2454
 AE2454'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AE2454'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2446 ***********************************************************************
 AE2446  DESIGNATION -  GIS 92
 AE2446  PID         -  AE2446
 AE2446  STATE/COUNTY-  MD/BALTIMORE
 AE2446  COUNTRY     -  US
 AE2446  USGS QUAD   -  REISTERSTOWN (2016)
 AE2446
 AE2446                         *CURRENT SURVEY CONTROL
 AE2446  ______________________________________________________________________
 AE2446* NAD 83(2011) POSITION- 39 28 29.21724(N) 076 51 41.06423(W)   ADJUSTED
 AE2446* NAD 83(2011) ELLIP HT-   155.686 (meters)        (06/27/12)   ADJUSTED
 AE2446* NAD 83(2011) EPOCH   -  2010.00
 AE2446* NAVD 88 ORTHO HEIGHT -   187.749 (meters)      615.97  (feet) ADJUSTED
 AE2446  ______________________________________________________________________
 AE2446  GEOID HEIGHT    -        -32.062 (meters)                     GEOID18
 AE2446  NAD 83(2011) X  -  1,120,649.219 (meters)                     COMP
 AE2446  NAD 83(2011) Y  - -4,801,051.450 (meters)                     COMP
 AE2446  NAD 83(2011) Z  -  4,033,241.739 (meters)                     COMP
 AE2446  LAPLACE CORR    -         -0.68  (seconds)                    DEFLEC18
 AE2446  DYNAMIC HEIGHT  -        187.651 (meters)      615.65  (feet) COMP
 AE2446  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 AE2446
 AE2446  VERT ORDER      -  SECOND    CLASS II
 AE2446
 AE2446  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2446  Standards:
 AE2446         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2446            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2446  -------------------------------------------------------------------
 AE2446  NETWORK    0.41   0.71           0.18   0.15   0.36     -0.04317250
 AE2446  -------------------------------------------------------------------
 AE2446  Click here for local accuracies and other accuracy information.
 AE2446
 AE2446.The horizontal coordinates were established by GPS observations
 AE2446.and adjusted by the National Geodetic Survey in June 2012.
 AE2446
 AE2446.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2446.been affixed to the stable North American tectonic plate. See 
 AE2446.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2446
 AE2446.The horizontal coordinates are valid at the epoch date displayed above
 AE2446.which is a decimal equivalence of Year/Month/Day.
 AE2446
 AE2446.The orthometric height was determined by differential leveling and
 AE2446.adjusted by the NATIONAL GEODETIC SURVEY
 AE2446.in February 1998.
 AE2446
 AE2446.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2446.GEOID18 height accuracy estimate available here.
 AE2446
 AE2446.Click photographs - Photos may exist for this station.
 AE2446
 AE2446.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2446
 AE2446.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2446
 AE2446.The ellipsoidal height was determined by GPS observations
 AE2446.and is referenced to NAD 83.
 AE2446
 AE2446.The dynamic height is computed by dividing the NAVD 88
 AE2446.geopotential number by the normal gravity value computed on the
 AE2446.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2446.degrees latitude (g = 980.6199 gals.).
 AE2446
 AE2446.The modeled gravity was interpolated from observed gravity values.
 AE2446
 AE2446. The following values were computed from the NAD 83(2011) position.
 AE2446
 AE2446;                    North         East     Units Scale Factor Converg.
 AE2446;SPC MD       -   200,724.183   411,925.236   MT  1.00000443   +0 05 13.1
 AE2446;SPC MD       -   658,542.59  1,351,458.05   sFT  1.00000443   +0 05 13.1
 AE2446;UTM  18      - 4,371,119.568   339,894.806   MT  0.99991561   -1 11 01.0
 AE2446
 AE2446!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2446!SPC MD       -   0.99997558  x   1.00000443  =   0.99998001
 AE2446!UTM  18      -   0.99997558  x   0.99991561  =   0.99989119
 AE2446
 AE2446:                Primary Azimuth Mark                     Grid Az
 AE2446:SPC MD       -  GIS 93                                   217 11 46.6
 AE2446:UTM  18      -  GIS 93                                   218 28 00.7
 AE2446
 AE2446_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3989471119(NAD 83)
 AE2446
 AE2446|---------------------------------------------------------------------|
 AE2446| PID    Reference Object                     Distance      Geod. Az  |
 AE2446|                                                           dddmmss.s |
 AE2446| AE2447 GIS 93                              APPROX. 1.4 KM 2171659.7 |
 AE2446|---------------------------------------------------------------------|
 AE2446
 AE2446                          SUPERSEDED SURVEY CONTROL
 AE2446
 AE2446  NAD 83(2007)-  39 28 29.21740(N)    076 51 41.06497(W) AD(2002.00) 0
 AE2446  ELLIP H (02/10/07)  155.705  (m)                       GP(2002.00)    
 AE2446  ELLIP H (08/30/02)  155.715  (m)                       GP(       ) 4 2
 AE2446  NAD 83(1991)-  39 28 29.21720(N)    076 51 41.06522(W) AD(       ) 1
 AE2446  ELLIP H (08/28/97)  155.658  (m)                       GP(       ) 3 2
 AE2446  NAVD 88             187.75   (m)          616.0    (f) LEVELING    3  
 AE2446  NAVD 88 (08/28/97)  187.8    (m)  GEOID96  model used  GPS OBS        
 AE2446
 AE2446.Superseded values are not recommended for survey control.
 AE2446
 AE2446.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2446.See file dsdata.pdf to determine how the superseded data were derived.
 AE2446
 AE2446_MARKER: DD = SURVEY DISK
 AE2446_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2446_STAMPING: NO. GIS-92 1995
 AE2446_MARK LOGO: MD-005
 AE2446_PROJECTION: FLUSH
 AE2446_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2446_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2446+STABILITY: SURFACE MOTION
 AE2446_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2446+SATELLITE: SATELLITE OBSERVATIONS - May 31, 2014
 AE2446
 AE2446  HISTORY     - Date     Condition        Report By
 AE2446  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2446  HISTORY     - 19960201 GOOD             MCCRON
 AE2446  HISTORY     - 19970625 GOOD             MD-005
 AE2446  HISTORY     - 20000211 GOOD             GEOMET
 AE2446  HISTORY     - 20040525 GOOD             GEOCAC
 AE2446  HISTORY     - 20050729 GOOD             DEWDAV
 AE2446  HISTORY     - 20140531 GOOD             RODCON
 AE2446
 AE2446                          STATION DESCRIPTION
 AE2446
 AE2446'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2446'STATION IS LOCATED ABOUT 18.0 MI (28.97 KM) NORTHWEST FROM THE CENTER
 AE2446'OF BALTIMORE AND ABOUT 2.0 MI (3.22 KM) WEST OF REISTERSTOWN. TO REACH
 AE2446'THE STATION FROM THE INTERSECTION OF ROUTE 30, I-795 AND ROUTE 140
 AE2446'NORTHWEST OF REISTERSTOWN GO NORTHWEST ON ROUTE 140 FOR 1.1 MI (1.77
 AE2446'KM) TO GORES MILL ROAD ON THE LEFT (FOLLOW SIGNS - NO LEFT TURN). FROM
 AE2446'THE INTERSECTION OF ROUTE 140 AND GORES MILL ROAD GO SOUTH ON GORES
 AE2446'MILL ROAD FOR 0.6 MI (0.97 KM) TO THE INTERSECTION WITH GORES MILL
 AE2446'ROAD TO THE RIGHT AND IVY MILL STRAIGHT AHEAD.  THE STATION IS ON THE
 AE2446'RIGHT IN A GRASSY LAWN AREA ON THE SOUTHWEST SIDE OF THE INTERSECTION.
 AE2446'STATION MARK IS SET IN THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT
 AE2446'SET FLUSH WITH THE GROUND.  IT IS 23.9 FT (7.28 M) NORTHWEST OF THE
 AE2446'CENTERLINE OF IVY MILL ROAD, 26.1 FT (7.96 M) SOUTHEAST OF THE
 AE2446'CENTERLINE OF GORES MILL ROAD, 44.9 FT (13.69 M) EAST OF POWER POLE
 AE2446'NO. 172188, AND 11.4 FT (3.47 M) SOUTH OF A ROAD SIGN.
 AE2446
 AE2446                          STATION RECOVERY (1996)
 AE2446
 AE2446'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2446'STATION IS LOCATED ABOUT 18.0 MI (29.0 KM) NORTHWEST FROM THE CENTER
 AE2446'OF BALTIMORE AND ABOUT 2.0 MI (3.2 KM) WEST OF REISTERSTOWN.  TO REACH
 AE2446'THE STATION FROM THE INTERSECTION OF ROUTE 30, I-795 AND ROUTE 140
 AE2446'NORTHWEST OF REISTERSTOWN GO NORTHWEST ON ROUTE 140 FOR 1.1 MI (1.8
 AE2446'KM) TO GORES MILL ROAD ON THE LEFT (FOLLOW SIGNS - NO LEFT TURN) .
 AE2446'FROM THE INTERSECTION OF ROUTE 140 AND GORES MILL ROAD GO SOUTH ON
 AE2446'GORES MILL ROAD FOR 0.6 MI (1.0 KM) TO THE INTERSECTION WITH GORES
 AE2446'MILL ROAD TO THE RIGHT AND IVY MILL STRAIGHT AHEAD.  THE STATION IS ON
 AE2446'THE RIGHT IN A GRASSY LAWN AREA ON THE SOUTHWEST SIDE OF THE
 AE2446'INTERSECTION.  STATION MARK IS SET IN THE TOP OF A 10 INCH DIAMETER
 AE2446'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 23.9 FT (7.3 M)
 AE2446'NORTHWEST OF THE CENTERLINE OF IVY MILL ROAD, 26.1 FT (8.0 M)
 AE2446'SOUTHEAST OF THE CENTERLINE OF GORES MILL ROAD, 44.9 FT (13.7 M) EAST
 AE2446'OF POWER POLE NO.  172188, AND 11.4 FT (3.5 M) SOUTH OF A ROAD SIGN.
 AE2446
 AE2446                          STATION RECOVERY (1997)
 AE2446
 AE2446'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AE2446'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AE2446'1997.
 AE2446
 AE2446                          STATION RECOVERY (2000)
 AE2446
 AE2446'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (CCG)
 AE2446'GOOD CONDITION.
 AE2446
 AE2446                          STATION RECOVERY (2004)
 AE2446
 AE2446'RECOVERY NOTE BY GEOCACHING 2004 (DH)
 AE2446'RECOVERED IN GOOD CONDITION.
 AE2446
 AE2446                          STATION RECOVERY (2005)
 AE2446
 AE2446'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (CSW)
 AE2446'RECOVERED IN GOOD CONDITION.
 AE2446
 AE2446                          STATION RECOVERY (2014)
 AE2446
 AE2446'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AE2446'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2447 ***********************************************************************
 AE2447  DESIGNATION -  GIS 93
 AE2447  PID         -  AE2447
 AE2447  STATE/COUNTY-  MD/BALTIMORE
 AE2447  COUNTRY     -  US
 AE2447  USGS QUAD   -  REISTERSTOWN (2016)
 AE2447
 AE2447                         *CURRENT SURVEY CONTROL
 AE2447  ______________________________________________________________________
 AE2447* NAD 83(2011) POSITION- 39 27 53.15789(N) 076 52 16.48095(W)   ADJUSTED
 AE2447* NAD 83(2011) ELLIP HT-   140.045 (meters)        (06/27/12)   ADJUSTED
 AE2447* NAD 83(2011) EPOCH   -  2010.00
 AE2447* NAVD 88 ORTHO HEIGHT -   172.102 (meters)      564.64  (feet) ADJUSTED
 AE2447  ______________________________________________________________________
 AE2447  GEOID HEIGHT    -        -32.054 (meters)                     GEOID18
 AE2447  NAD 83(2011) X  -  1,119,982.667 (meters)                     COMP
 AE2447  NAD 83(2011) Y  - -4,801,920.494 (meters)                     COMP
 AE2447  NAD 83(2011) Z  -  4,032,373.299 (meters)                     COMP
 AE2447  LAPLACE CORR    -         -0.75  (seconds)                    DEFLEC18
 AE2447  DYNAMIC HEIGHT  -        172.013 (meters)      564.35  (feet) COMP
 AE2447  MODELED GRAVITY -    980,102.6   (mgal)                       NAVD 88
 AE2447
 AE2447  VERT ORDER      -  SECOND    CLASS II
 AE2447
 AE2447  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2447  Standards:
 AE2447         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2447            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2447  -------------------------------------------------------------------
 AE2447  NETWORK    0.65   1.10           0.30   0.22   0.56      0.15538044
 AE2447  -------------------------------------------------------------------
 AE2447  Click here for local accuracies and other accuracy information.
 AE2447
 AE2447.The horizontal coordinates were established by GPS observations
 AE2447.and adjusted by the National Geodetic Survey in June 2012.
 AE2447
 AE2447.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2447.been affixed to the stable North American tectonic plate. See 
 AE2447.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2447
 AE2447.The horizontal coordinates are valid at the epoch date displayed above
 AE2447.which is a decimal equivalence of Year/Month/Day.
 AE2447
 AE2447.The orthometric height was determined by differential leveling and
 AE2447.adjusted by the NATIONAL GEODETIC SURVEY
 AE2447.in February 1998.
 AE2447
 AE2447.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2447.GEOID18 height accuracy estimate available here.
 AE2447
 AE2447.Click photographs - Photos may exist for this station.
 AE2447
 AE2447.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2447
 AE2447.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2447
 AE2447.The ellipsoidal height was determined by GPS observations
 AE2447.and is referenced to NAD 83.
 AE2447
 AE2447.The dynamic height is computed by dividing the NAVD 88
 AE2447.geopotential number by the normal gravity value computed on the
 AE2447.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2447.degrees latitude (g = 980.6199 gals.).
 AE2447
 AE2447.The modeled gravity was interpolated from observed gravity values.
 AE2447
 AE2447. The following values were computed from the NAD 83(2011) position.
 AE2447
 AE2447;                    North         East     Units Scale Factor Converg.
 AE2447;SPC MD       -   199,610.866   411,080.298   MT  1.00000262   +0 04 50.9
 AE2447;SPC MD       -   654,889.98  1,348,685.94   sFT  1.00000262   +0 04 50.9
 AE2447;UTM  18      - 4,370,025.354   339,025.465   MT  0.99991905   -1 11 22.6
 AE2447
 AE2447!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2447!SPC MD       -   0.99997803  x   1.00000262  =   0.99998065
 AE2447!UTM  18      -   0.99997803  x   0.99991905  =   0.99989708
 AE2447
 AE2447:                Primary Azimuth Mark                     Grid Az
 AE2447:SPC MD       -  GIS 92                                   037 11 46.3
 AE2447:UTM  18      -  GIS 92                                   038 27 59.8
 AE2447
 AE2447_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3902570025(NAD 83)
 AE2447
 AE2447|---------------------------------------------------------------------|
 AE2447| PID    Reference Object                     Distance      Geod. Az  |
 AE2447|                                                           dddmmss.s |
 AE2447| AE2446 GIS 92                              APPROX. 1.4 KM 0371637.2 |
 AE2447|---------------------------------------------------------------------|
 AE2447
 AE2447                          SUPERSEDED SURVEY CONTROL
 AE2447
 AE2447  NAD 83(2007)-  39 27 53.15805(N)    076 52 16.48168(W) AD(2002.00) 0
 AE2447  ELLIP H (02/10/07)  140.065  (m)                       GP(2002.00)    
 AE2447  ELLIP H (08/30/02)  140.075  (m)                       GP(       ) 4 2
 AE2447  NAD 83(1991)-  39 27 53.15796(N)    076 52 16.48192(W) AD(       ) 1
 AE2447  ELLIP H (08/28/97)  140.023  (m)                       GP(       ) 3 2
 AE2447  NAVD 88 (08/28/97)  172.1    (m)  GEOID96  model used  GPS OBS        
 AE2447
 AE2447.Superseded values are not recommended for survey control.
 AE2447
 AE2447.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2447.See file dsdata.pdf to determine how the superseded data were derived.
 AE2447
 AE2447_MARKER: DD = SURVEY DISK
 AE2447_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2447_STAMPING: NO. GIS-93 1995
 AE2447_MARK LOGO: MD-005
 AE2447_PROJECTION: FLUSH
 AE2447_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2447_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2447+STABILITY: SURFACE MOTION
 AE2447_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2447+SATELLITE: SATELLITE OBSERVATIONS - May 31, 2014
 AE2447
 AE2447  HISTORY     - Date     Condition        Report By
 AE2447  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2447  HISTORY     - 19960201 GOOD             MCCRON
 AE2447  HISTORY     - 20000211 GOOD             GEOMET
 AE2447  HISTORY     - 20080905 GOOD             GPSSS
 AE2447  HISTORY     - 20140531 GOOD             RODCON
 AE2447
 AE2447                          STATION DESCRIPTION
 AE2447
 AE2447'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2447'STATION IS LOCATED ABOUT 18.0 MI (28.97 KM) NORTHWEST FROM THE CENTER
 AE2447'OF BALTIMORE AND 2.8 MI (4.51 KM) WEST OF REISTERSTOWN. TO REACH THE
 AE2447'STATION FROM THE INTERSECTION OF ROUTE 30, I-795 AND ROUTE 140
 AE2447'NORTHWEST OF REISTERSTOWN GO WEST ON ROUTE 140 FOR 1.1 MI (1.77 KM) TO
 AE2447'GORES MILL ROAD (NO LEFT TURN - FOLLOW SIGNS).  FROM THE INTERSECTION
 AE2447'OF GORES MILL ROAD AND ROUTE 140 GO SOUTH ON GORES MILL ROAD AND IVY
 AE2447'MILL ROAD FOR 1.5 MI (2.41 KM) TO THE INTERSECTION WITH COCKEYS MILL
 AE2447'ROAD AND THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A
 AE2447'10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS
 AE2447'57.2 FT (17.43 M) SOUTHEAST OF THE CENTERLINE OF IVY MILL ROAD, 23.8
 AE2447'FT (7.25 M) NORTHEAST OF THE CENTERLINE OF COCKEYS MILL ROAD, 79.3 FT
 AE2447'(24.17 M) NORTHEAST OF POWER POLE NO. 494535, AND 14.4 FT (4.39 M)
 AE2447'NORTHWEST OF A POST AND WIRE FENCE CORNER.
 AE2447
 AE2447                          STATION RECOVERY (1996)
 AE2447
 AE2447'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2447'STATION IS LOCATED ABOUT 18.0 MI (29.0 KM) NORTHWEST FROM THE CENTER
 AE2447'OF BALTIMORE AND 2.8 MI (4.5 KM) WEST OF REISTERSTOWN.  TO REACH THE
 AE2447'STATION FROM THE INTERSECTION OF ROUTE 30, I-795 AND ROUTE 140
 AE2447'NORTHWEST OF REISTERSTOWN GO WEST ON ROUTE 140 FOR 1.1 MI (1.8 KM) TO
 AE2447'GORES MILL ROAD (NO LEFT TURN - FOLLOW SIGNS) .  FROM THE INTERSECTION
 AE2447'OF GORES MILL ROAD AND ROUTE 140 GO SOUTH ON GORES MILL ROAD AND IVY
 AE2447'MILL ROAD FOR 1.5 MI (2.4 KM) TO THE INTERSECTION WITH COCKEYS MILL
 AE2447'ROAD AND THE STATION ON THE LEFT.  STATION MARK IS SET IN THE TOP OF A
 AE2447'10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS
 AE2447'57.2 FT (17.4 M) SOUTHEAST OF THE CENTERLINE OF IVY MILL ROAD, 23.8 FT
 AE2447'(7.3 M) NORTHEAST OF THE CENTERLINE OF COCKEYS MILL ROAD, 79.3 FT
 AE2447'(24.2 M) NORTHEAST OF POWER POLE NO.  494535, AND 14.4 FT (4.4 M)
 AE2447'NORTHWEST OF A POST AND WIRE FENCE CORNER.
 AE2447
 AE2447                          STATION RECOVERY (2000)
 AE2447
 AE2447'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (CCG)
 AE2447'GOOD.
 AE2447
 AE2447                          STATION RECOVERY (2008)
 AE2447
 AE2447'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (SS)
 AE2447'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYING.
 AE2447
 AE2447                          STATION RECOVERY (2014)
 AE2447
 AE2447'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AE2447'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2461 ***********************************************************************
 AE2461  DESIGNATION -  GIS 94
 AE2461  PID         -  AE2461
 AE2461  STATE/COUNTY-  MD/BALTIMORE
 AE2461  COUNTRY     -  US
 AE2461  USGS QUAD   -  REISTERSTOWN (2016)
 AE2461
 AE2461                         *CURRENT SURVEY CONTROL
 AE2461  ______________________________________________________________________
 AE2461* NAD 83(2011) POSITION- 39 26 46.82568(N) 076 52 19.35307(W)   ADJUSTED
 AE2461* NAD 83(2011) ELLIP HT-   136.793 (meters)        (06/27/12)   ADJUSTED
 AE2461* NAD 83(2011) EPOCH   -  2010.00
 AE2461* NAVD 88 ORTHO HEIGHT -   168.8   (meters)      554.    (feet) GPS OBS
 AE2461  ______________________________________________________________________
 AE2461  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE2461  GEOID HEIGHT    -        -32.057 (meters)                     GEOID96
 AE2461  GEOID HEIGHT    -        -32.048 (meters)                     GEOID18
 AE2461  NAD 83(2011) X  -  1,120,210.502 (meters)                     COMP
 AE2461  NAD 83(2011) Y  - -4,803,199.689 (meters)                     COMP
 AE2461  NAD 83(2011) Z  -  4,030,791.686 (meters)                     COMP
 AE2461  LAPLACE CORR    -         -0.85  (seconds)                    DEFLEC18
 AE2461
 AE2461  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2461  Standards:
 AE2461         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2461            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2461  -------------------------------------------------------------------
 AE2461  NETWORK    0.61   1.18           0.27   0.22   0.60     -0.06158015
 AE2461  -------------------------------------------------------------------
 AE2461  Click here for local accuracies and other accuracy information.
 AE2461
 AE2461.The horizontal coordinates were established by GPS observations
 AE2461.and adjusted by the National Geodetic Survey in June 2012.
 AE2461
 AE2461.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2461.been affixed to the stable North American tectonic plate. See 
 AE2461.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2461
 AE2461.The horizontal coordinates are valid at the epoch date displayed above
 AE2461.which is a decimal equivalence of Year/Month/Day.
 AE2461
 AE2461.The orthometric height was determined by GPS observations and a
 AE2461.high-resolution geoid model.
 AE2461
 AE2461.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2461.GEOID18 height accuracy estimate available here.
 AE2461
 AE2461.Click photographs - Photos may exist for this station.
 AE2461
 AE2461.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2461
 AE2461.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2461
 AE2461.The ellipsoidal height was determined by GPS observations
 AE2461.and is referenced to NAD 83.
 AE2461
 AE2461. The following values were computed from the NAD 83(2011) position.
 AE2461
 AE2461;                    North         East     Units Scale Factor Converg.
 AE2461;SPC MD       -   197,565.081   411,014.508   MT  0.99999936   +0 04 49.1
 AE2461;SPC MD       -   648,178.10  1,348,470.10   sFT  0.99999936   +0 04 49.1
 AE2461;UTM  18      - 4,367,981.696   338,914.350   MT  0.99991949   -1 11 22.8
 AE2461
 AE2461!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2461!SPC MD       -   0.99997854  x   0.99999936  =   0.99997790
 AE2461!UTM  18      -   0.99997854  x   0.99991949  =   0.99989803
 AE2461
 AE2461_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3891467981(NAD 83)
 AE2461
 AE2461                          SUPERSEDED SURVEY CONTROL
 AE2461
 AE2461  NAD 83(2007)-  39 26 46.82583(N)    076 52 19.35382(W) AD(2002.00) 0
 AE2461  ELLIP H (02/10/07)  136.812  (m)                       GP(2002.00)    
 AE2461  ELLIP H (08/30/02)  136.821  (m)                       GP(       ) 4 2
 AE2461  NAD 83(1991)-  39 26 46.82553(N)    076 52 19.35407(W) AD(       ) 1
 AE2461  ELLIP H (08/28/97)  136.764  (m)                       GP(       ) 3 2
 AE2461
 AE2461.Superseded values are not recommended for survey control.
 AE2461
 AE2461.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2461.See file dsdata.pdf to determine how the superseded data were derived.
 AE2461
 AE2461_MARKER: DD = SURVEY DISK
 AE2461_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2461_STAMPING: NO. GIS-94
 AE2461_MARK LOGO: MD-005
 AE2461_PROJECTION: FLUSH
 AE2461_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2461_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2461+STABILITY: SURFACE MOTION
 AE2461_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2461+SATELLITE: SATELLITE OBSERVATIONS - May 31, 2014
 AE2461
 AE2461  HISTORY     - Date     Condition        Report By
 AE2461  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2461  HISTORY     - 20140531 GOOD             RODCON
 AE2461
 AE2461                          STATION DESCRIPTION
 AE2461
 AE2461'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2461'STATION IS LOCATED ABOUT 3.0 MI (4.83 KM) SOUTHWEST OF REISTERSTOWN.
 AE2461'TO REACH STATION FROM THE INTERSECTION OF ROUTE 30, I-795, AND ROUTE
 AE2461'140 NORTHWEST OF REISTERSTOWN, GO WEST ON ROUTE 140 FOR 1.1 MI (1.77
 AE2461'KM) TO THE INTERSECTION WITH GORES MILL ROAD. GO SOUTH ON GORES MILL
 AE2461'ROAD AND IVY MILL ROAD FOR 2.85 MI (4.59 KM) TO THE INTERSECTION WITH
 AE2461'NICODEMUS ROAD. CONTINUE AHEAD FOR ABOUT 100 FT (30.48 M) TO THE
 AE2461'INTERSECTION WITH CONTENT LANE AND THE STATION ON THE RIGHT. STATION
 AE2461'MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 AE2461'WITH THE GROUND. IT IS 111.8 FT (34.08 M) SOUTH OF THE CENTERLINE OF
 AE2461'NICODEMUS ROAD, 31.0 FT (9.45 M) NORTH OF THE CENTERLINE OF CONTENT
 AE2461'LANE, 25.1 FT (7.65 M) WEST OF THE CENTERLINE OF IVY MILL ROAD AND
 AE2461'64.9 FT (19.78 M) NORTHEAST OF POWER POLE NO.179367.
 AE2461
 AE2461                          STATION RECOVERY (2014)
 AE2461
 AE2461'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AE2461'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2457 ***********************************************************************
 AE2457  DESIGNATION -  GIS 95
 AE2457  PID         -  AE2457
 AE2457  STATE/COUNTY-  MD/ANNE ARUNDEL
 AE2457  COUNTRY     -  US
 AE2457  USGS QUAD   -  RELAY (2016)
 AE2457
 AE2457                         *CURRENT SURVEY CONTROL
 AE2457  ______________________________________________________________________
 AE2457* NAD 83(2011) POSITION- 39 13 02.95491(N) 076 37 43.50399(W)   ADJUSTED
 AE2457* NAD 83(2011) ELLIP HT-   -11.855 (meters)        (06/27/12)   ADJUSTED
 AE2457* NAD 83(2011) EPOCH   -  2010.00
 AE2457* NAVD 88 ORTHO HEIGHT -    20.9   (meters)       69.    (feet) GPS OBS
 AE2457  ______________________________________________________________________
 AE2457  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE2457  GEOID HEIGHT    -        -32.772 (meters)                     GEOID96
 AE2457  GEOID HEIGHT    -        -32.775 (meters)                     GEOID18
 AE2457  NAD 83(2011) X  -  1,144,293.441 (meters)                     COMP
 AE2457  NAD 83(2011) Y  - -4,813,955.154 (meters)                     COMP
 AE2457  NAD 83(2011) Z  -  4,011,044.776 (meters)                     COMP
 AE2457  LAPLACE CORR    -         -5.12  (seconds)                    DEFLEC18
 AE2457
 AE2457  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2457  Standards:
 AE2457         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2457            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2457  -------------------------------------------------------------------
 AE2457  NETWORK    0.60   1.06           0.27   0.21   0.54      0.21217959
 AE2457  -------------------------------------------------------------------
 AE2457  Click here for local accuracies and other accuracy information.
 AE2457
 AE2457.The horizontal coordinates were established by GPS observations
 AE2457.and adjusted by the National Geodetic Survey in June 2012.
 AE2457
 AE2457.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2457.been affixed to the stable North American tectonic plate. See 
 AE2457.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2457
 AE2457.The horizontal coordinates are valid at the epoch date displayed above
 AE2457.which is a decimal equivalence of Year/Month/Day.
 AE2457
 AE2457.The orthometric height was determined by GPS observations and a
 AE2457.high-resolution geoid model.
 AE2457
 AE2457.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2457.GEOID18 height accuracy estimate available here.
 AE2457
 AE2457.Click photographs - Photos may exist for this station.
 AE2457
 AE2457.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2457
 AE2457.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2457
 AE2457.The ellipsoidal height was determined by GPS observations
 AE2457.and is referenced to NAD 83.
 AE2457
 AE2457. The following values were computed from the NAD 83(2011) position.
 AE2457
 AE2457;                    North         East     Units Scale Factor Converg.
 AE2457;SPC MD       -   172,215.329   432,060.143   MT  0.99996759   +0 13 58.8
 AE2457;SPC MD       -   565,009.79  1,417,517.32   sFT  0.99996759   +0 13 58.8
 AE2457;UTM  18      - 4,342,175.644   359,392.530   MT  0.99984343   -1 01 47.9
 AE2457
 AE2457!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2457!SPC MD       -   1.00000186  x   0.99996759  =   0.99996945
 AE2457!UTM  18      -   1.00000186  x   0.99984343  =   0.99984529
 AE2457
 AE2457_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5939242175(NAD 83)
 AE2457
 AE2457                          SUPERSEDED SURVEY CONTROL
 AE2457
 AE2457  NAD 83(2007)-  39 13 02.95521(N)    076 37 43.50480(W) AD(2002.00) 0
 AE2457  ELLIP H (02/10/07)  -11.844  (m)                       GP(2002.00)    
 AE2457  ELLIP H (08/30/02)  -11.831  (m)                       GP(       ) 4 2
 AE2457  NAD 83(1991)-  39 13 02.95521(N)    076 37 43.50426(W) AD(       ) 1
 AE2457  ELLIP H (08/28/97)  -11.903  (m)                       GP(       ) 3 2
 AE2457
 AE2457.Superseded values are not recommended for survey control.
 AE2457
 AE2457.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2457.See file dsdata.pdf to determine how the superseded data were derived.
 AE2457
 AE2457_MARKER: DD = SURVEY DISK
 AE2457_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2457_STAMPING: NO. GIS-95 1995
 AE2457_MARK LOGO: MD-005
 AE2457_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2457_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2457+STABILITY: SURFACE MOTION
 AE2457_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2457+SATELLITE: SATELLITE OBSERVATIONS - January 16, 2006
 AE2457
 AE2457  HISTORY     - Date     Condition        Report By
 AE2457  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2457  HISTORY     - 20060116 GOOD             GPSSS
 AE2457
 AE2457                          STATION DESCRIPTION
 AE2457
 AE2457'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2457'STATION IS LOCATED ABOUT 6.0 MI (9.66 KM) SOUTH OF THE CENTER OF
 AE2457'BALTIMORE AND ABOUT 2.0 MI (3.22 KM) SOUTHWEST OF BROOKLYN. TO REACH
 AE2457'STATION FROM THE MD ROUTE 648 (ANNAPOLIS ROAD) OVERPASS OVER I-695
 AE2457'(BELTWAY) GO NORTH ON ROUTE 648 FOR 0.65 MI (1.05 KM) TO THE
 AE2457'INTERSECTION WITH ROUTE 170 (BELLE GROVE ROAD). TURN RIGHT AND GO EAST
 AE2457'ON ROUTE 170 FOR 1.0 MI (1.61 KM) TO THE INTERSECTION WITH THOMAS AVE.
 AE2457'TURN RIGHT AND GO SOUTH ON THOMAS AVE. FOR 0.35 MI (0.56 KM) TO THE
 AE2457'STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF 10 IN DIAMETER
 AE2457'CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 7.75 FT (2.36 M)
 AE2457'SOUTH OF THE FACE OF THE CURB, 6.3 FT (1.92 M) SOUTHWEST OF A FIRE
 AE2457'HYDRANT AND 105 FT (32.00 M) EAST OF LIGHT POLE NO.498998.
 AE2457
 AE2457                          STATION RECOVERY (2006)
 AE2457
 AE2457'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (CJC)
 AE2457'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2445 ***********************************************************************
 AE2445  DESIGNATION -  GIS 96
 AE2445  PID         -  AE2445
 AE2445  STATE/COUNTY-  MD/BALTIMORE
 AE2445  COUNTRY     -  US
 AE2445  USGS QUAD   -  COCKEYSVILLE (2016)
 AE2445
 AE2445                         *CURRENT SURVEY CONTROL
 AE2445  ______________________________________________________________________
 AE2445* NAD 83(2011) POSITION- 39 22 47.41448(N) 076 43 02.19779(W)   ADJUSTED
 AE2445* NAD 83(2011) ELLIP HT-   115.958 (meters)        (06/27/12)   ADJUSTED
 AE2445* NAD 83(2011) EPOCH   -  2010.00
 AE2445* NAVD 88 ORTHO HEIGHT -   148.260 (meters)      486.42  (feet) ADJUSTED
 AE2445  ______________________________________________________________________
 AE2445  GEOID HEIGHT    -        -32.306 (meters)                     GEOID18
 AE2445  NAD 83(2011) X  -  1,134,254.003 (meters)                     COMP
 AE2445  NAD 83(2011) Y  - -4,804,703.087 (meters)                     COMP
 AE2445  NAD 83(2011) Z  -  4,025,074.014 (meters)                     COMP
 AE2445  LAPLACE CORR    -         -4.81  (seconds)                    DEFLEC18
 AE2445  DYNAMIC HEIGHT  -        148.182 (meters)      486.16  (feet) COMP
 AE2445  MODELED GRAVITY -    980,092.9   (mgal)                       NAVD 88
 AE2445
 AE2445  VERT ORDER      -  SECOND    CLASS II
 AE2445
 AE2445  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2445  Standards:
 AE2445         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2445            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2445  -------------------------------------------------------------------
 AE2445  NETWORK    1.05   1.59           0.48   0.35   0.81     -0.24726121
 AE2445  -------------------------------------------------------------------
 AE2445  Click here for local accuracies and other accuracy information.
 AE2445
 AE2445.The horizontal coordinates were established by GPS observations
 AE2445.and adjusted by the National Geodetic Survey in June 2012.
 AE2445
 AE2445.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2445.been affixed to the stable North American tectonic plate. See 
 AE2445.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2445
 AE2445.The horizontal coordinates are valid at the epoch date displayed above
 AE2445.which is a decimal equivalence of Year/Month/Day.
 AE2445
 AE2445.The orthometric height was determined by differential leveling and
 AE2445.adjusted by the NATIONAL GEODETIC SURVEY
 AE2445.in February 1998.
 AE2445
 AE2445.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2445.GEOID18 height accuracy estimate available here.
 AE2445
 AE2445.Click photographs - Photos may exist for this station.
 AE2445
 AE2445.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2445
 AE2445.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2445
 AE2445.The ellipsoidal height was determined by GPS observations
 AE2445.and is referenced to NAD 83.
 AE2445
 AE2445.The dynamic height is computed by dividing the NAVD 88
 AE2445.geopotential number by the normal gravity value computed on the
 AE2445.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE2445.degrees latitude (g = 980.6199 gals.).
 AE2445
 AE2445.The modeled gravity was interpolated from observed gravity values.
 AE2445
 AE2445. The following values were computed from the NAD 83(2011) position.
 AE2445
 AE2445;                    North         East     Units Scale Factor Converg.
 AE2445;SPC MD       -   190,211.728   424,359.458   MT  0.99998848   +0 10 38.8
 AE2445;SPC MD       -   624,052.98  1,392,252.66   sFT  0.99998848   +0 10 38.8
 AE2445;UTM  18      - 4,360,335.469   352,091.921   MT  0.99986936   -1 05 23.1
 AE2445
 AE2445!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2445!SPC MD       -   0.99998181  x   0.99998848  =   0.99997029
 AE2445!UTM  18      -   0.99998181  x   0.99986936  =   0.99985117
 AE2445
 AE2445_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5209160335(NAD 83)
 AE2445
 AE2445                          SUPERSEDED SURVEY CONTROL
 AE2445
 AE2445  NAD 83(2007)-  39 22 47.41466(N)    076 43 02.19856(W) AD(2002.00) 0
 AE2445  ELLIP H (02/10/07)  115.976  (m)                       GP(2002.00)    
 AE2445  ELLIP H (08/30/02)  115.983  (m)                       GP(       ) 4 2
 AE2445  NAD 83(1991)-  39 22 47.41485(N)    076 43 02.19872(W) AD(       ) 1
 AE2445  ELLIP H (08/28/97)  115.933  (m)                       GP(       ) 3 2
 AE2445  NAVD 88 (08/28/97)  148.3    (m)  GEOID96  model used  GPS OBS        
 AE2445
 AE2445.Superseded values are not recommended for survey control.
 AE2445
 AE2445.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2445.See file dsdata.pdf to determine how the superseded data were derived.
 AE2445
 AE2445_MARKER: DD = SURVEY DISK
 AE2445_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2445_STAMPING: NO. GIS-96 1995
 AE2445_MARK LOGO: MD-005
 AE2445_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2445_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2445+STABILITY: SURFACE MOTION
 AE2445_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2445+SATELLITE: SATELLITE OBSERVATIONS - December 19, 2014
 AE2445
 AE2445  HISTORY     - Date     Condition        Report By
 AE2445  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2445  HISTORY     - 19960201 GOOD             MCCRON
 AE2445  HISTORY     - 19971217 GOOD             DMW
 AE2445  HISTORY     - 19980220 GOOD             DMW
 AE2445  HISTORY     - 19990831 GOOD             GEOMET
 AE2445  HISTORY     - 20030405 GOOD             DMW
 AE2445  HISTORY     - 20050615 GOOD             DEWDAV
 AE2445  HISTORY     - 20070102 POOR             GPSSS
 AE2445  HISTORY     - 20090323 GOOD             JMTMD
 AE2445  HISTORY     - 20091111 GOOD             GPSSS
 AE2445  HISTORY     - 20120926 GOOD             WOOLPT
 AE2445  HISTORY     - 20141219 GOOD             INDIV
 AE2445
 AE2445                          STATION DESCRIPTION
 AE2445
 AE2445'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2445'STATION IS LOCATED ABOUT 8.0 MI (12.87 KM) NORTHWEST OF THE CENTER OF
 AE2445'BALTIMORE AND ABOUT 0.5 MI (0.80 KM) EAST OF PIKESVILLE AND ON THE
 AE2445'GROUNDS OF THE DRUID RIDGE CEMETERY. TO REACH STATION FROM THE PARK
 AE2445'HEIGHTS AVE (ROUTE 129) OVERPASS OVER I-695 (BELTWAY) GO SOUTH ON PARK
 AE2445'HEIGHTS AVE FOR 1.05 MI (1.69 KM) TO THE ENTRANCE TO THE DRUID RIDGE
 AE2445'CEMETERY.  TURN RIGHT AND GO EAST FOR 0.05 MI (0.08 KM) ALONG THE
 AE2445'ENTRANCE ROAD TO THE INTERSECTION WITH THE MACADAM ROAD LEADING SOUTH.
 AE2445'TURN LEFT AND GO SOUTH ON THE MACADAM ROAD FOR 0.2 MI (0.32 KM) TO THE
 AE2445'END OF THE ROAD AT A CUL-DE-SAC AND THE STATION STRAIGHT AHEAD.
 AE2445'STATION MARK IS SET IN THE TOP OF A 10 INCH CONCRETE MONUMENT SET
 AE2445'FLUSH WITH THE GROUND.  IT IS ABOUT 95 FT (28.96 M) SOUTH OF THE
 AE2445'CENTER OF A CUL-DE-SAC, 31.5 FT (9.60 M) NORTHWEST OF A LIGHT POLE,
 AE2445'7.1 FT (2.16 M) NORTH OF A 4 FT (1.22 M) TALL IRON RAIL FENCE, AND
 AE2445'76.0 FT (23.16 M) SOUTHEAST OF THE CEMTERY SIGN.
 AE2445
 AE2445                          STATION RECOVERY (1996)
 AE2445
 AE2445'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2445'STATION IS LOCATED ABOUT 8.0 MI (12.9 KM) NORTHWEST OF THE CENTER OF
 AE2445'BALTIMORE AND ABOUT 0.5 MI (0.8 KM) EAST OF PIKESVILLE AND ON THE
 AE2445'GROUNDS OF THE DRUID RIDGE CEMETERY.  TO REACH STATION FROM THE PARK
 AE2445'HEIGHTS AVE (ROUTE 129) OVERPASS OVER I-695 (BELTWAY) GO SOUTH ON PARK
 AE2445'HEIGHTS AVE FOR 1.05 MI (1.69 KM) TO THE ENTRANCE TO THE DRUID RIDGE
 AE2445'CEMETERY.  TURN RIGHT AND GO EAST FOR 0.05 MI (0.08 KM) ALONG THE
 AE2445'ENTRANCE ROAD TO THE INTERSECTION WITH THE MACADAM ROAD LEADING SOUTH.
 AE2445'TURN LEFT AND GO SOUTH ON THE MACADAM ROAD FOR 0.2 MI (0.3 KM) TO THE
 AE2445'END OF THE ROAD AT A CUL-DE-SAC AND THE STATION STRAIGHT AHEAD.
 AE2445'STATION MARK IS SET IN THE TOP OF A 10 INCH CONCRETE MONUMENT SET
 AE2445'FLUSH WITH THE GROUND.  IT IS ABOUT 95 FT (29.0 M) SOUTH OF THE CENTER
 AE2445'OF A CUL-DE-SAC, 31.5 FT (9.6 M) NORTHWEST OF A LIGHT POLE, 7.1 FT
 AE2445'(2.2 M) NORTH OF A 4 FT (1.2 M) TALL IRON RAIL FENCE, AND 76.0 FT
 AE2445'(23.2 M) SOUTHEAST OF THE CEMTERY SIGN.
 AE2445
 AE2445                          STATION RECOVERY (1997)
 AE2445
 AE2445'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 AE2445'RECOVERED AS DESCRIBED.
 AE2445
 AE2445                          STATION RECOVERY (1998)
 AE2445
 AE2445'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 AE2445'RECOVERED IN GOOD CONDITION.
 AE2445
 AE2445                          STATION RECOVERY (1999)
 AE2445
 AE2445'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (BL)
 AE2445'GOOD.
 AE2445
 AE2445                          STATION RECOVERY (2003)
 AE2445
 AE2445'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (GAB)
 AE2445'RECOVERED IN GOOD CONDITION.
 AE2445
 AE2445                          STATION RECOVERY (2005)
 AE2445
 AE2445'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (KEC)
 AE2445'RECOVERED IN GOOD CONDITION.
 AE2445
 AE2445                          STATION RECOVERY (2007)
 AE2445
 AE2445'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (TED)
 AE2445'RECOVERED IN GOOD CONDITION BY TED OF SURVEY SERVICES OF MD, LLC.
 AE2445
 AE2445                          STATION RECOVERY (2009)
 AE2445
 AE2445'RECOVERY NOTE BY JMT ENGINEERING 2009 (CJH)
 AE2445'USED FOR RTK W/ GIS 44 AND BCO 739A.
 AE2445
 AE2445                          STATION RECOVERY (2009)
 AE2445
 AE2445'RECOVERY NOTE BY GPS SALES AND SERVICES 2009 (KAH)
 AE2445'RECOVERED BY KEITH HEINDEL, PLS OF PROFESSIONAL SURVEYS, LLC
 AE2445
 AE2445                          STATION RECOVERY (2012)
 AE2445
 AE2445'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 AE2445'RECOVERED IN GOOD CONDITION.
 AE2445
 AE2445                          STATION RECOVERY (2014)
 AE2445
 AE2445'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (WRA)
 AE2445'RECOVERED AS DESCRIBED, DESCRIPTION IS ADEQUATE, USED FOR STATIC GPS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2458 ***********************************************************************
 AE2458  HT_MOD      -  This is a Height Modernization Survey Station.
 AE2458  DESIGNATION -  GIS 97
 AE2458  PID         -  AE2458
 AE2458  STATE/COUNTY-  MD/BALTIMORE
 AE2458  COUNTRY     -  US
 AE2458  USGS QUAD   -  REISTERSTOWN (2016)
 AE2458
 AE2458                         *CURRENT SURVEY CONTROL
 AE2458  ______________________________________________________________________
 AE2458* NAD 83(2011) POSITION- 39 28 42.72831(N) 076 49 43.88629(W)   ADJUSTED
 AE2458* NAD 83(2011) ELLIP HT-   168.614 (meters)        (06/27/12)   ADJUSTED
 AE2458* NAD 83(2011) EPOCH   -  2010.00
 AE2458* NAVD 88 ORTHO HEIGHT -   200.69  (meters)      658.4   (feet) GPS OBS
 AE2458  ______________________________________________________________________
 AE2458  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AE2458  GEOID HEIGHT    -        -32.089 (meters)                     GEOID99
 AE2458  GEOID HEIGHT    -        -32.081 (meters)                     GEOID18
 AE2458  NAD 83(2011) X  -  1,123,318.399 (meters)                     COMP
 AE2458  NAD 83(2011) Y  - -4,800,165.807 (meters)                     COMP
 AE2458  NAD 83(2011) Z  -  4,033,571.598 (meters)                     COMP
 AE2458  LAPLACE CORR    -         -1.72  (seconds)                    DEFLEC18
 AE2458
 AE2458  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2458  Standards:
 AE2458         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2458            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2458  -------------------------------------------------------------------
 AE2458  NETWORK    0.47   0.80           0.21   0.17   0.41     -0.08602390
 AE2458  -------------------------------------------------------------------
 AE2458  Click here for local accuracies and other accuracy information.
 AE2458
 AE2458.The horizontal coordinates were established by GPS observations
 AE2458.and adjusted by the National Geodetic Survey in June 2012.
 AE2458
 AE2458.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2458.been affixed to the stable North American tectonic plate. See 
 AE2458.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2458
 AE2458.The horizontal coordinates are valid at the epoch date displayed above
 AE2458.which is a decimal equivalence of Year/Month/Day.
 AE2458
 AE2458.The orthometric height was determined by GPS observations and a
 AE2458.high-resolution geoid model using precise GPS observation and
 AE2458.processing techniques.
 AE2458
 AE2458.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2458.GEOID18 height accuracy estimate available here.
 AE2458
 AE2458.Click photographs - Photos may exist for this station.
 AE2458
 AE2458.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2458
 AE2458.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2458
 AE2458.The ellipsoidal height was determined by GPS observations
 AE2458.and is referenced to NAD 83.
 AE2458
 AE2458. The following values were computed from the NAD 83(2011) position.
 AE2458
 AE2458;                    North         East     Units Scale Factor Converg.
 AE2458;SPC MD       -   201,145.620   414,725.162   MT  1.00000512   +0 06 26.7
 AE2458;SPC MD       -   659,925.25  1,360,644.14   sFT  1.00000512   +0 06 26.7
 AE2458;UTM  18      - 4,371,478.785   342,703.122   MT  0.99990464   -1 09 46.8
 AE2458
 AE2458!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2458!SPC MD       -   0.99997355  x   1.00000512  =   0.99997867
 AE2458!UTM  18      -   0.99997355  x   0.99990464  =   0.99987819
 AE2458
 AE2458_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4270371478(NAD 83)
 AE2458
 AE2458                          SUPERSEDED SURVEY CONTROL
 AE2458
 AE2458  NAD 83(2007)-  39 28 42.72847(N)    076 49 43.88703(W) AD(2002.00) 0
 AE2458  ELLIP H (02/10/07)  168.633  (m)                       GP(2002.00)    
 AE2458  ELLIP H (08/30/02)  168.643  (m)                       GP(       ) 4 2
 AE2458  NAD 83(1991)-  39 28 42.72838(N)    076 49 43.88725(W) AD(       ) 1
 AE2458  ELLIP H (08/28/97)  168.589  (m)                       GP(       ) 3 2
 AE2458  NAVD 88 (08/28/97)  200.7    (m)  GEOID96  model used  GPS OBS        
 AE2458
 AE2458.Superseded values are not recommended for survey control.
 AE2458
 AE2458.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2458.See file dsdata.pdf to determine how the superseded data were derived.
 AE2458
 AE2458_MARKER: DD = SURVEY DISK
 AE2458_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2458_STAMPING: GIS-97 1995
 AE2458_MARK LOGO: MD-005
 AE2458_PROJECTION: FLUSH
 AE2458_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2458_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2458+STABILITY: SURFACE MOTION
 AE2458_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2458+SATELLITE: SATELLITE OBSERVATIONS - January 17, 2021
 AE2458
 AE2458  HISTORY     - Date     Condition        Report By
 AE2458  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2458  HISTORY     - 19970625 GOOD             MD-005
 AE2458  HISTORY     - 20030530 GOOD             DMW
 AE2458  HISTORY     - 20080901 GOOD             GPSSS
 AE2458  HISTORY     - 20081230 GOOD             JMTMD
 AE2458  HISTORY     - 20090722 GOOD             GPSSS
 AE2458  HISTORY     - 20140531 GOOD             RODCON
 AE2458  HISTORY     - 20151216 GOOD             DEWDAV
 AE2458  HISTORY     - 20181112 GOOD             DEWDAV
 AE2458  HISTORY     - 20200305 GOOD             WTBALL
 AE2458  HISTORY     - 20210117 GOOD             WTBALL
 AE2458
 AE2458                          STATION DESCRIPTION
 AE2458
 AE2458'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2458'STATION IS LOCATED ABOUT 1.0 MI (1.61 KM) NORTH OF THE CENTER OF
 AE2458'REISTERTOWN. TO REACH STATION FROM THE INTERSECTION OF ROUTE 30
 AE2458'(HANOVER PIKE) AND ROUTE 128 (BUTLER ROAD) GO NORTH ON ROUTE 30 FOR
 AE2458'0.2 MI (0.32 KM) TO BUS STOP NO.134 AND THE STATION ON THE RIGHT IN A
 AE2458'GRASSY AREA ON THE INSIDE OF THE BUS LOOP. STATION MARK IS SET IN THE
 AE2458'TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 AE2458'IT IS 50.25 FT (15.32 M) SOUTHEAST OF THE SOUTHEAST CORNER OF THE BUS
 AE2458'STOP, 71.8 FT (21.88 M) SOUTH OF POWER POLE NO.487538, 24.9 FT (7.59
 AE2458'M) SOUTHWEST OF A STORM DRAIN INLET, 48.0 FT (14.63 M) WEST OF
 AE2458'TELEPHONE POLE NO.22 AND 40.3 FT (12.28 M) NORTHWEST OF A SEWER
 AE2458'MANHOLE.
 AE2458
 AE2458                          STATION RECOVERY (1997)
 AE2458
 AE2458'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AE2458'RECOVERED AS DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION (WEH)
 AE2458'1997.
 AE2458
 AE2458                          STATION RECOVERY (2003)
 AE2458
 AE2458'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (DMM)
 AE2458'RECOVERED AS DESCRIBED
 AE2458
 AE2458                          STATION RECOVERY (2008)
 AE2458
 AE2458'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (KH)
 AE2458'RECOVERED BY KEITH HEINDEL, PLS, OF PROFESSIONAL SURVEYS, LLC
 AE2458
 AE2458                          STATION RECOVERY (2008)
 AE2458
 AE2458'RECOVERY NOTE BY JMT ENGINEERING 2008 (JAF)
 AE2458'RECOVERED AS DESCRIBED. GOOD OPEN GPS SITE.
 AE2458'(OVERHEAD TRANSMISSION LINES MAY INTERFEAR WITH STATIC GPS SESSIONS)
 AE2458
 AE2458                          STATION RECOVERY (2009)
 AE2458
 AE2458'RECOVERY NOTE BY GPS SALES AND SERVICES 2009 (BM)
 AE2458'RECOVERED BY BROOKE MILLER OF FSH AND ASSOCIATES.
 AE2458
 AE2458                          STATION RECOVERY (2014)
 AE2458
 AE2458'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AE2458'RECOVERED IN GOOD CONDITION.
 AE2458
 AE2458                          STATION RECOVERY (2015)
 AE2458
 AE2458'RECOVERY NOTE BY DEWBERRY DAVIS 2015 (GDS)
 AE2458'RECOVERED IN GOOD CONDITION.
 AE2458
 AE2458                          STATION RECOVERY (2018)
 AE2458
 AE2458'RECOVERY NOTE BY DEWBERRY DAVIS 2018 (GDS)
 AE2458'RECOVERED IN GOOD CONDITION.
 AE2458
 AE2458                          STATION RECOVERY (2020)
 AE2458
 AE2458'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AE2458'RECOVERED IN GOOD CONDITION.
 AE2458
 AE2458                          STATION RECOVERY (2021)
 AE2458
 AE2458'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2021 (JMB)
 AE2458'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE2464 ***********************************************************************
 AE2464  DESIGNATION -  GIS 98
 AE2464  PID         -  AE2464
 AE2464  STATE/COUNTY-  MD/BALTIMORE
 AE2464  COUNTRY     -  US
 AE2464  USGS QUAD   -  TOWSON (2016)
 AE2464
 AE2464                         *CURRENT SURVEY CONTROL
 AE2464  ______________________________________________________________________
 AE2464* NAD 83(2011) POSITION- 39 26 27.29007(N) 076 35 06.33629(W)   ADJUSTED
 AE2464* NAD 83(2011) ELLIP HT-    46.524 (meters)        (06/27/12)   ADJUSTED
 AE2464* NAD 83(2011) EPOCH   -  2010.00
 AE2464* NAVD 88 ORTHO HEIGHT -    79.1   (meters)      260.    (feet) GPS OBS
 AE2464  ______________________________________________________________________
 AE2464  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AE2464  GEOID HEIGHT    -        -32.569 (meters)                     GEOID96
 AE2464  GEOID HEIGHT    -        -32.562 (meters)                     GEOID18
 AE2464  NAD 83(2011) X  -  1,144,324.400 (meters)                     COMP
 AE2464  NAD 83(2011) Y  - -4,797,833.749 (meters)                     COMP
 AE2464  NAD 83(2011) Z  -  4,030,269.066 (meters)                     COMP
 AE2464  LAPLACE CORR    -         -4.21  (seconds)                    DEFLEC18
 AE2464
 AE2464  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AE2464  Standards:
 AE2464         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AE2464            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AE2464  -------------------------------------------------------------------
 AE2464  NETWORK    0.64   1.08           0.29   0.23   0.55     -0.03951228
 AE2464  -------------------------------------------------------------------
 AE2464  Click here for local accuracies and other accuracy information.
 AE2464
 AE2464.The horizontal coordinates were established by GPS observations
 AE2464.and adjusted by the National Geodetic Survey in June 2012.
 AE2464
 AE2464.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AE2464.been affixed to the stable North American tectonic plate. See 
 AE2464.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AE2464
 AE2464.The horizontal coordinates are valid at the epoch date displayed above
 AE2464.which is a decimal equivalence of Year/Month/Day.
 AE2464
 AE2464.The orthometric height was determined by GPS observations and a
 AE2464.high-resolution geoid model.
 AE2464
 AE2464.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE2464.GEOID18 height accuracy estimate available here.
 AE2464
 AE2464.Click photographs - Photos may exist for this station.
 AE2464
 AE2464.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AE2464
 AE2464.The Laplace correction was computed from DEFLEC18 derived deflections.
 AE2464
 AE2464.The ellipsoidal height was determined by GPS observations
 AE2464.and is referenced to NAD 83.
 AE2464
 AE2464. The following values were computed from the NAD 83(2011) position.
 AE2464
 AE2464;                    North         East     Units Scale Factor Converg.
 AE2464;SPC MD       -   197,036.052   435,717.552   MT  0.99999842   +0 15 37.5
 AE2464;SPC MD       -   646,442.45  1,429,516.67   sFT  0.99999842   +0 15 37.5
 AE2464;UTM  18      - 4,366,905.954   363,596.517   MT  0.99982908   -1 00 25.7
 AE2464
 AE2464!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AE2464!SPC MD       -   0.99999270  x   0.99999842  =   0.99999112
 AE2464!UTM  18      -   0.99999270  x   0.99982908  =   0.99982178
 AE2464
 AE2464_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6359666905(NAD 83)
 AE2464
 AE2464                          SUPERSEDED SURVEY CONTROL
 AE2464
 AE2464  NAD 83(2007)-  39 26 27.29025(N)    076 35 06.33696(W) AD(2002.00) 0
 AE2464  ELLIP H (02/10/07)   46.542  (m)                       GP(2002.00)    
 AE2464  ELLIP H (08/30/02)   46.546  (m)                       GP(       ) 4 2
 AE2464  NAD 83(1991)-  39 26 27.29033(N)    076 35 06.33697(W) AD(       ) 1
 AE2464  ELLIP H (08/28/97)   46.519  (m)                       GP(       ) 3 2
 AE2464
 AE2464.Superseded values are not recommended for survey control.
 AE2464
 AE2464.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AE2464.See file dsdata.pdf to determine how the superseded data were derived.
 AE2464
 AE2464_MARKER: DD = SURVEY DISK
 AE2464_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE2464_STAMPING: NO. GIS-98 1995
 AE2464_MARK LOGO: MD-005
 AE2464_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AE2464_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE2464+STABILITY: SURFACE MOTION
 AE2464_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE2464+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2003
 AE2464
 AE2464  HISTORY     - Date     Condition        Report By
 AE2464  HISTORY     - 1996     MONUMENTED       MCCRON
 AE2464  HISTORY     - 19991105 GOOD             NGS
 AE2464  HISTORY     - 20030516 GOOD             DMW
 AE2464
 AE2464                          STATION DESCRIPTION
 AE2464
 AE2464'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE2464'STATION IS LOCATED ABOUT 2.0 MI (3.22 KM) EAST OF TIMONIUM AND ABOUT
 AE2464'3.0 MI (4.83 KM) NORTH OF TOWSON. TO REACH STATION FROM THE RT 146
 AE2464'(DULANEY VALLEY) OVERPASS OVER I-695 (BELTWAY), GO NORTH ON RT 146 FOR
 AE2464'2.4 MI (3.86 KM) TO THE INTERSECTION WITH THE ENTRANCE ROAD TO THE
 AE2464'PINE RIDGE GOLF COURSE. TURN RIGHT AND GO EAST ON THE ENTRANCE ROAD
 AE2464'FOR 0.7 MI (1.13 KM) TO THE EAST END OF THE DRIVING RANGE AND A DIRT
 AE2464'ROAD ON THE RIGHT LEADING SOUTH. TURN RIGHT AND GO SOUTH ON THE DIRT
 AE2464'ROAD FOR 0.35 MI (0.56 KM) TO THE MAINTENANCE BUILDING ON THE RIGHT
 AE2464'AND THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP OF A 10
 AE2464'INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 103.6
 AE2464'FT (31.58 M) NORTHEAST OF THE NORTHEAST CORNER OF THE BUILDING, 35.9
 AE2464'FT (10.94 M) NORTH OF THE NORTHWEST CORNER OF A CONCRETE PAD AND 38.0
 AE2464'FT (11.58 M) NORTH OF THE NORTHEAST CORNER OF THE CONCRETE PAD.
 AE2464
 AE2464                          STATION RECOVERY (1999)
 AE2464
 AE2464'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (BB)
 AE2464'GOOD FOR GPS.
 AE2464
 AE2464                          STATION RECOVERY (2003)
 AE2464
 AE2464'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (GAB)
 AE2464'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE5604 ***********************************************************************
 AE5604  DESIGNATION -  GIS 99
 AE5604  PID         -  AE5604
 AE5604  STATE/COUNTY-  MD/BALTIMORE
 AE5604  COUNTRY     -  US
 AE5604  USGS QUAD   -  RELAY (2016)
 AE5604
 AE5604                         *CURRENT SURVEY CONTROL
 AE5604  ______________________________________________________________________
 AE5604* NAD 83(1986) POSITION- 39 14 35.41   (N) 076 42 50.70   (W)   HD_HELD1
 AE5604* NAVD 88 ORTHO HEIGHT -    70.563 (meters)      231.51  (feet) ADJUSTED
 AE5604  ______________________________________________________________________
 AE5604  GEOID HEIGHT    -        -32.482 (meters)                     GEOID18
 AE5604  DYNAMIC HEIGHT  -         70.525 (meters)      231.38  (feet) COMP
 AE5604  MODELED GRAVITY -    980,095.6   (mgal)                       NAVD 88
 AE5604
 AE5604  VERT ORDER      -  SECOND    CLASS I
 AE5604
 AE5604.The horizontal coordinates were determined by differentially corrected
 AE5604.hand held GPS observations or other comparable positioning techniques
 AE5604.and have an estimated accuracy of +/- 3 meters.
 AE5604
 AE5604.The orthometric height was determined by differential leveling and
 AE5604.adjusted by the NATIONAL GEODETIC SURVEY
 AE5604.in February 1998.
 AE5604
 AE5604.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE5604.GEOID18 height accuracy estimate available here.
 AE5604
 AE5604.Click photographs - Photos may exist for this station.
 AE5604
 AE5604.The dynamic height is computed by dividing the NAVD 88
 AE5604.geopotential number by the normal gravity value computed on the
 AE5604.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE5604.degrees latitude (g = 980.6199 gals.).
 AE5604
 AE5604.The modeled gravity was interpolated from observed gravity values.
 AE5604
 AE5604;                    North         East    Units  Estimated Accuracy
 AE5604;SPC MD       -   175,039.9     424,682.2     MT  (+/- 3 meters HH1 GPS) 
 AE5604
 AE5604_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5207945161(NAD 83)
 AE5604
 AE5604                          SUPERSEDED SURVEY CONTROL
 AE5604
 AE5604.No superseded survey control is available for this station.
 AE5604
 AE5604_MARKER: DD = SURVEY DISK
 AE5604_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE5604_STAMPING: NO. GIS-99 1995
 AE5604_MARK LOGO: MCCRON
 AE5604_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE5604_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE5604+STABILITY: SURFACE MOTION
 AE5604_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AE5604+SATELLITE: SATELLITE OBSERVATIONS - December 06, 2003
 AE5604
 AE5604  HISTORY     - Date     Condition        Report By
 AE5604  HISTORY     - 1996     MONUMENTED       MCCRON
 AE5604  HISTORY     - 20010605 GOOD             MDSHA
 AE5604  HISTORY     - 20031206 GOOD             USPSQD
 AE5604
 AE5604                          STATION DESCRIPTION
 AE5604
 AE5604'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AE5604'STATION IS LOCATED ABOUT 7 MI (11.3 KM) SOUTHWEST OF THE CENTER OF
 AE5604'BALTIMORE AND ABOUT 2 MI (3.2 KM) SOUTHEAST OF CATONSVILLE.  TO REACH
 AE5604'THE STATION FROM THE I-95 OVERPASS OVER I-195 GO WEST ON I-195 FOR 0.6
 AE5604'MI (1.0 KM) TO THE EXIT LANE TO THE UNIVERSITY OF MARYLAND BALTIMORE
 AE5604'COUNTY CAMPUS AND THE STATION ON THE RIGHT.  STATION MARK IS SET IN
 AE5604'THE TOP OF A 10 INCH DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AE5604'GROUND.  IT IS 52.0 FT (15.8 M) EAST OF THE CENTERLINE OF THE
 AE5604'WESTBOUND LANE OF I-195 AND 4.2 FT (1.3 M) WEST OF A GUARDRAIL.
 AE5604
 AE5604                          STATION RECOVERY (2001)
 AE5604
 AE5604'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AE5604'RECOVERED AS DESCRIBED.
 AE5604
 AE5604                          STATION RECOVERY (2003)
 AE5604
 AE5604'RECOVERY NOTE BY US POWER SQUADRON 2003 (CM)
 AE5604'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4666 ***********************************************************************
 AB4666  DESIGNATION -  GIST
 AB4666  PID         -  AB4666
 AB4666  STATE/COUNTY-  MD/CARROLL
 AB4666  COUNTRY     -  US
 AB4666  USGS QUAD   -  LITTLESTOWN (2019)
 AB4666
 AB4666                         *CURRENT SURVEY CONTROL
 AB4666  ______________________________________________________________________
 AB4666* NAD 83(2011) POSITION- 39 37 34.54045(N) 077 02 57.30592(W)   ADJUSTED
 AB4666* NAD 83(2011) ELLIP HT-   187.856 (meters)        (06/27/12)   ADJUSTED
 AB4666* NAD 83(2011) EPOCH   -  2010.00
 AB4666* NAVD 88 ORTHO HEIGHT -   220.4   (meters)      723.    (feet) GPS OBS
 AB4666  ______________________________________________________________________
 AB4666  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4666  GEOID HEIGHT    -        -32.532 (meters)                     GEOID99
 AB4666  GEOID HEIGHT    -        -32.523 (meters)                     GEOID18
 AB4666  NAD 83(2011) X  -  1,102,508.373 (meters)                     COMP
 AB4666  NAD 83(2011) Y  - -4,794,286.956 (meters)                     COMP
 AB4666  NAD 83(2011) Z  -  4,046,230.370 (meters)                     COMP
 AB4666  LAPLACE CORR    -          5.08  (seconds)                    DEFLEC18
 AB4666
 AB4666  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4666  Standards:
 AB4666         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4666            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4666  -------------------------------------------------------------------
 AB4666  NETWORK    1.21   5.49           0.55   0.41   2.80      0.19017258
 AB4666  -------------------------------------------------------------------
 AB4666  Click here for local accuracies and other accuracy information.
 AB4666
 AB4666.The horizontal coordinates were established by GPS observations
 AB4666.and adjusted by the National Geodetic Survey in June 2012.
 AB4666
 AB4666.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4666.been affixed to the stable North American tectonic plate. See 
 AB4666.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4666
 AB4666.The horizontal coordinates are valid at the epoch date displayed above
 AB4666.which is a decimal equivalence of Year/Month/Day.
 AB4666
 AB4666.The orthometric height was determined by GPS observations and a
 AB4666.high-resolution geoid model.
 AB4666
 AB4666.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4666.GEOID18 height accuracy estimate available here.
 AB4666
 AB4666.Click photographs - Photos may exist for this station.
 AB4666
 AB4666.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4666
 AB4666.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4666
 AB4666.The ellipsoidal height was determined by GPS observations
 AB4666.and is referenced to NAD 83.
 AB4666
 AB4666. The following values were computed from the NAD 83(2011) position.
 AB4666
 AB4666;                    North         East     Units Scale Factor Converg.
 AB4666;SPC MD       -   217,534.670   395,771.222   MT  1.00003559   -0 01 51.3
 AB4666;SPC MD       -   713,695.00  1,298,459.42   sFT  1.00003559   -0 01 51.3
 AB4666;UTM  18      - 4,388,283.676   324,119.506   MT  0.99998086   -1 18 26.3
 AB4666
 AB4666!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4666!SPC MD       -   0.99997053  x   1.00003559  =   1.00000612
 AB4666!UTM  18      -   0.99997053  x   0.99998086  =   0.99995139
 AB4666
 AB4666_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2411988283(NAD 83)
 AB4666
 AB4666                          SUPERSEDED SURVEY CONTROL
 AB4666
 AB4666  NAD 83(2007)-  39 37 34.54074(N)    077 02 57.30662(W) AD(2002.00) 0
 AB4666  ELLIP H (02/10/07)  187.873  (m)                       GP(2002.00)    
 AB4666  ELLIP H (08/30/02)  187.855  (m)                       GP(       ) 4 2
 AB4666  NAD 83(1991)-  39 37 34.54013(N)    077 02 57.30728(W) AD(       ) 1
 AB4666  ELLIP H (07/03/96)  187.788  (m)                       GP(       ) 1 1
 AB4666  NAVD 88 (07/03/96)  220.4    (m)  GEOID93  model used  GPS OBS        
 AB4666
 AB4666.Superseded values are not recommended for survey control.
 AB4666
 AB4666.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4666.See file dsdata.pdf to determine how the superseded data were derived.
 AB4666
 AB4666_MARKER: DD = SURVEY DISK
 AB4666_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4666_STAMPING: GIST 1984
 AB4666_MARK LOGO: MD-013
 AB4666_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4666_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4666+STABILITY: SURFACE MOTION
 AB4666_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4666+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2007
 AB4666
 AB4666  HISTORY     - Date     Condition        Report By
 AB4666  HISTORY     - 1984     MONUMENTED       MD-013
 AB4666  HISTORY     - 20070529 GOOD             GEOCAC
 AB4666
 AB4666                          STATION DESCRIPTION
 AB4666
 AB4666'DESCRIBED BY CARROLL COUNTY MARYLAND 1984
 AB4666'STATION IS LOCATED ABOUT 4.5 MI (7.2 KM) NORTHWEST OF WESTMINSTER AND
 AB4666'ABOUT 7 MI (11.3 KM) EAST OF TANEYTOWN ON THE GROUNDS OF THE PLEASANT
 AB4666'VALLEY CEMETERY. TO REACH STATION FROM THE INTERSECTION OF MD ROUTE
 AB4666'140 (TANEYTOWN PIKE) AND PLEASANT VALLEY ROAD AT FRIZZELLBURG GO NORTH
 AB4666'ON PLEASANT VALLEY ROAD FOR 1.7 MI (2.7 KM) TO THE PLEASANT VALLEY
 AB4666'CEMETERY AND THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP
 AB4666'OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AB4666'32.0 FT (9.8 M) EAST OF THE CENTERLINE OF THE ROAD, 11.0 FT (3.4 M)
 AB4666'SOUTH OF AN ASPHALT DRIVEWAY LEADING EAST, 4.3 FT (1.3 M) WEST OF
 AB4666'UTILITY POLE NO.280621 AND 2.6 FT (0.8 M) NORTHWEST OF THE NORTHWEST
 AB4666'CORNER OF THE CHAINLINK FENCE AROUND THE CEMETERY.
 AB4666
 AB4666                          STATION RECOVERY (2007)
 AB4666
 AB4666'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 AB4666'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4615 ***********************************************************************
 JV4615  DESIGNATION -  GLARE
 JV4615  PID         -  JV4615
 JV4615  STATE/COUNTY-  MD/FREDERICK
 JV4615  COUNTRY     -  US
 JV4615  USGS QUAD   -  MIDDLETOWN (2016)
 JV4615
 JV4615                         *CURRENT SURVEY CONTROL
 JV4615  ______________________________________________________________________
 JV4615* NAD 83(1991) POSITION- 39 23 52.11233(N) 077 30 34.85482(W)   ADJUSTED
 JV4615* NAVD 88 ORTHO HEIGHT -   262.    (meters)      860.    (feet) SCALED
 JV4615  ______________________________________________________________________
 JV4615  GEOID HEIGHT    -        -32.858 (meters)                     GEOID18
 JV4615  LAPLACE CORR    -          5.16  (seconds)                    DEFLEC18
 JV4615  HORZ ORDER      -  SECOND
 JV4615
 JV4615.The horizontal coordinates were established by classical geodetic methods
 JV4615.and adjusted by the National Geodetic Survey in January 1992.
 JV4615
 JV4615.The orthometric height was scaled from a topographic map.
 JV4615
 JV4615.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4615.GEOID18 height accuracy estimate available here.
 JV4615
 JV4615.Click photographs - Photos may exist for this station.
 JV4615
 JV4615.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4615
 JV4615. The following values were computed from the NAD 83(1991) position.
 JV4615
 JV4615;                    North         East     Units Scale Factor Converg.
 JV4615;SPC MD       -   192,291.809   356,097.000   MT  0.99999129   -0 19 11.6
 JV4615;SPC MD       -   630,877.38  1,168,294.91   sFT  0.99999129   -0 19 11.6
 JV4615;SPC VA N     - 2,192,625.899 3,585,307.099   MT  1.00004110   +0 37 05.1
 JV4615;SPC VA N     - 7,193,640.14 11,762,795.04   sFT  1.00004110   +0 37 05.1
 JV4615;UTM  18      - 4,363,928.505   283,890.809   MT  1.00017506   -1 35 36.6
 JV4615
 JV4615!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4615!SPC MD       -   0.99996409  x   0.99999129  =   0.99995538
 JV4615!SPC VA N     -   0.99996409  x   1.00004110  =   1.00000518
 JV4615!UTM  18      -   0.99996409  x   1.00017506  =   1.00013914
 JV4615
 JV4615:                Primary Azimuth Mark                     Grid Az
 JV4615:SPC MD       -  LAMBS KNOLL                              299 25 53.9
 JV4615:SPC VA N     -  LAMBS KNOLL                              298 29 37.2
 JV4615:UTM  18      -  LAMBS KNOLL                              300 42 18.9
 JV4615
 JV4615_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8389063928(NAD 83)
 JV4615
 JV4615|---------------------------------------------------------------------|
 JV4615| PID    Reference Object                     Distance      Geod. Az  |
 JV4615|                                                           dddmmss.s |
 JV4615| CJ9870 GLARE RM 1                           33.258 METERS 04333     |
 JV4615| CJ9869 GLARE AZ MK                                        0640453.3 |
 JV4615| CJ9871 GLARE RM 2                           28.258 METERS 15255     |
 JV4615| JV4632 LAMBS KNOLL                         APPROX.11.5 KM 2990642.3 |
 JV4615|---------------------------------------------------------------------|
 JV4615
 JV4615                          SUPERSEDED SURVEY CONTROL
 JV4615
 JV4615  NAD 83(1986)-  39 23 52.11294(N)    077 30 34.86427(W) AD(       ) 2
 JV4615  NAD 27      -  39 23 51.74270(N)    077 30 35.91060(W) AD(       ) 2
 JV4615
 JV4615.Superseded values are not recommended for survey control.
 JV4615
 JV4615.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4615.See file dsdata.pdf to determine how the superseded data were derived.
 JV4615
 JV4615_MARKER: DS = TRIANGULATION STATION DISK
 JV4615_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4615_STAMPING: GLARE 1958
 JV4615_MARK LOGO: CGS
 JV4615_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4615+STABILITY: SURFACE MOTION
 JV4615
 JV4615  HISTORY     - Date     Condition        Report By
 JV4615  HISTORY     - 1958     MONUMENTED       CGS
 JV4615  HISTORY     - 1963     GOOD             CGS
 JV4615
 JV4615                          STATION DESCRIPTION
 JV4615
 JV4615'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4615'THE STATION IS ABOUT 5.5 MILES SOUTHWEST OF THE CENTER OF
 JV4615'FREDERICK, 4.0 MILES SOUTHEAST OF MIDDLETOWN AND 2.0 MILES SOUTH
 JV4615'OF BRADDOCK HEIGHTS.  IT IS 36 FEET WEST OF THE APPROXIMATE
 JV4615'CENTER LINE OF ROAD AND 6 FEET NORTHEAST OF WITNESS POST.  THE
 JV4615'MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED GLARE 1958.
 JV4615'
 JV4615'REFERENCE MARK NO. 1 IS 22 FEET EAST OF APPROXIMATE CENTER OF
 JV4615'ROAD AND 14 FEET NORTH OF POWER LINE POLE.  THE MARK PROJECTS
 JV4615'ABOUT 3 INCHES AND THE DISK IS STAMPED GLARE NO 1 1958.
 JV4615'
 JV4615'REFERENCE MARK NO. 2 IS 27 FEET EAST OF THE APPROXIMATE CENTER OF
 JV4615'ROAD.  THE MARK PROJECTS ABOUT 3 INCHES AND THE DISK IS STAMPED
 JV4615'GLARE NO 2 1958.
 JV4615'
 JV4615'AZIMUTH MARK IS 12 FEET SOUTH-SOUTHWEST OF LARGE TRIANGLE-BLAZED
 JV4615'TREE AND 2 FEET SOUTH OF WITNESS POST.  THE MARK PROJECTS ABOUT
 JV4615'4 INCHES AND THE DISK IS STAMPED GLARE 1958.
 JV4615'
 JV4615'THE DISTANCE FROM R.M. NO. 1 TO R.M. NO. 2 IS 164.80 FEET.
 JV4615'
 JV4615'TO REACH THE STATION FROM THE POST OFFICE IN FREDERICK, GO WEST
 JV4615'ON U.S. HIGHWAY 40 FOR 3.0 MILES TO JUNCTION WITH U.S. ALTERNATE
 JV4615'40, TURN LEFT AND GO WESTERLY ON U.S. ALTERNATE 40 FOR 2.35 MILES
 JV4615'TO SUMMIT OF RIDGE.  TURN LEFT BETWEEN TWO STONE PILLARS AND
 JV4615'GO SOUTH FOR 0.35 MILE TO CROSSROADS, TURN RIGHT AND GO WEST
 JV4615'AND SOUTH FOR 1.5 MILES TO THE STATION ON RIGHT AS DESCRIBED.
 JV4615'
 JV4615'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH FOR 0.15
 JV4615'MILE TO LARGE STONE SIGN AND SIDE ROAD RIGHT, TURN RIGHT AND GO
 JV4615'EAST FOR 0.2 MILE TO THE AZIMUTH MARK AS DESCRIBED.
 JV4615'
 JV4615'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV4615
 JV4615                          STATION RECOVERY (1963)
 JV4615
 JV4615'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (RFG)
 JV4615'STATION WAS RECOVERED AS PREVIOUSLY DESCRIBED AND FOUND IN
 JV4615'GOOD CONDITION.  RM 1 WAS RECOVERED.  RM 2 WAS NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3910 ***********************************************************************
 JU3910  DESIGNATION -  GLASGOW
 JU3910  PID         -  JU3910
 JU3910  STATE/COUNTY-  MD/CECIL
 JU3910  COUNTRY     -  US
 JU3910  USGS QUAD   -  ELKTON (2016)
 JU3910
 JU3910                         *CURRENT SURVEY CONTROL
 JU3910  ______________________________________________________________________
 JU3910* NAD 83(1991) POSITION- 39 36 23.27804(N) 075 47 07.01037(W)   ADJUSTED
 JU3910* NAVD 88 ORTHO HEIGHT -    29.6   (meters)       97.    (feet) VERTCON3
 JU3910  ______________________________________________________________________
 JU3910  GEOID HEIGHT    -        -33.110 (meters)                     GEOID18
 JU3910  LAPLACE CORR    -          1.42  (seconds)                    DEFLEC18
 JU3910  HORZ ORDER      -  SECOND
 JU3910
 JU3910.The horizontal coordinates were established by classical geodetic methods
 JU3910.and adjusted by the National Geodetic Survey in January 1992.
 JU3910
 JU3910.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3910.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3910
 JU3910.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3910.GEOID18 height accuracy estimate available here.
 JU3910
 JU3910.Click photographs - Photos may exist for this station.
 JU3910
 JU3910.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3910
 JU3910. The following values were computed from the NAD 83(1991) position.
 JU3910
 JU3910;                    North         East     Units Scale Factor Converg.
 JU3910;SPC MD       -   216,029.748   504,322.748   MT  1.00003112   +0 45 44.6
 JU3910;SPC MD       -   708,757.60  1,654,598.88   sFT  1.00003112   +0 45 44.6
 JU3910;UTM  18      - 4,384,374.825   432,585.069   MT  0.99965595   -0 30 02.3
 JU3910
 JU3910!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3910!SPC MD       -   1.00000056  x   1.00003112  =   1.00003168
 JU3910!UTM  18      -   1.00000056  x   0.99965595  =   0.99965651
 JU3910
 JU3910:                Primary Azimuth Mark                     Grid Az
 JU3910:SPC MD       -  GLASGOW AZ MK                            091 31 29.9
 JU3910:UTM  18      -  GLASGOW AZ MK                            092 47 16.8
 JU3910
 JU3910_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3258584374(NAD 83)
 JU3910
 JU3910|---------------------------------------------------------------------|
 JU3910| PID    Reference Object                     Distance      Geod. Az  |
 JU3910|                                                           dddmmss.s |
 JU3910| CB2000 GLASGOW RM 1                         13.204 METERS 07543     |
 JU3910| JU3899 BOUNDARY MONUMENT 79 RESET           12.945 METERS 08624     |
 JU3910| CB1999 GLASGOW AZ MK                                      0921714.5 |
 JU3910| CB2002 GLASGOW RM 3 AZIMUTH                               0921714.5 |
 JU3910| CB2001 GLASGOW RM 2                         12.335 METERS 25805     |
 JU3910|---------------------------------------------------------------------|
 JU3910
 JU3910                          SUPERSEDED SURVEY CONTROL
 JU3910
 JU3910  NAD 83(1986)-  39 36 23.27205(N)    075 47 07.01735(W) AD(       ) 2
 JU3910  NAD 27      -  39 36 22.88050(N)    075 47 08.25210(W) AD(       ) 2
 JU3910  NGVD 29 (07/19/86)   29.8    (m)           98.     (f) VERT ANG       
 JU3910
 JU3910.Superseded values are not recommended for survey control.
 JU3910
 JU3910.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3910.See file dsdata.pdf to determine how the superseded data were derived.
 JU3910
 JU3910_STAMPING: GLASGOW 1961
 JU3910_MARK LOGO: CGS
 JU3910_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3910+SATELLITE: SATELLITE OBSERVATIONS - March 11, 2003
 JU3910
 JU3910  HISTORY     - Date     Condition        Report By
 JU3910  HISTORY     - 1961     MONUMENTED       CGS
 JU3910  HISTORY     - 1975     GOOD             NGS
 JU3910  HISTORY     - 1976     GOOD             NGS
 JU3910  HISTORY     - 20030311 GOOD             USPSQD
 JU3910  HISTORY     - 20100925 MARK NOT FOUND   GEOCAC
 JU3910  HISTORY     - 20140821 MARK NOT FOUND   JARICE
 JU3910
 JU3910                          STATION DESCRIPTION
 JU3910
 JU3910'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3910'THE STATION IS LOCATED ON THE NORTH RIGHT-OF-WAY OF THE WEST
 JU3910'BOUND TRAFFIC LANE OF U.S. HIGHWAY 40, 2.0 MILES WEST OF GLASGOW,
 JU3910'DELAWARE, 2-1/2 MILES EAST OF ELKTON, MARYLAND.
 JU3910'
 JU3910'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JU3910'213 ABOUT 1/2 MILE SOUTH OF ELKTON, MARYLAND, GO EAST ON
 JU3910'U.S. HIGHWAY 40 FOR 2.4 MILES TO THE DELAWARE STATE LINE AND THE
 JU3910'STATION LOCATED ON THE NORTH RIGHT-OF-WAY OF THE WEST BOUND
 JU3910'TRAFFIC LANE OF U.S. HIGHWAY 40.
 JU3910'
 JU3910'THE STATION MARK, A STANDARD DISK STAMPED GLASGOW 1961, IS SET
 JU3910'IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 JU3910'GROUND SURFACE.  IT IS 7.0 FEET SOUTH OF THE SOUTH EDGE OF A
 JU3910'CULTIVATED FIELD, 11.5 FEET NORTH-NORTHEAST OF A SIGN BOARD
 JU3910'MARYLAND STATE LINE, 35.6 FEET NORTH OF THE CENTER LINE OF THE
 JU3910'WEST BOUND TRAFFIC LANE OF HIGHWAY 40, 44.0 FEET WEST OF THE
 JU3910'WEST END OF A WOVEN FENCE LINE AND ABOUT 3.0 FEET HIGHER THAN
 JU3910'THE HIGHWAY.
 JU3910'
 JU3910'REFERENCE MARK 1, A STANDARD DISK STAMPED GLASGOW NO 1 1961,
 JU3910'IS SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH
 JU3910'THE GROUND SURFACE.  IT IS 4.7 FEET SOUTH OF THE WEST END OF THE
 JU3910'WOVEN FENCE LINE, 35.6 FEET NORTH OF THE CENTER LINE OF THE WEST
 JU3910'BOUND TRAFFIC LANE OF HIGHWAY 40, 40.6 FEET EAST-NORTHEAST OF THE
 JU3910'SIGN BOARD MARYLAND STATE LINE, AND ABOUT THE SAME ELEVATION AS
 JU3910'THE STATION MARK.
 JU3910'
 JU3910'REFERENCE MARK 2, A STANDARD DISK STAMPED GLASGOW NO 2 1961, IS
 JU3910'SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 JU3910'GROUND SURFACE.  IT IS 35.6 FEET NORTH OF THE CENTER LINE OF THE
 JU3910'WEST BOUND TRAFFIC LANE OF HIGHWAY 40, 46.0 FEET WEST OF THE
 JU3910'SIGN BOARD MARYLAND STATE LINE, 84.2 FEET WEST-SOUTHWEST OF THE
 JU3910'WEST END OF THE WOVEN FENCE LINE AND ABOUT THE SAME ELEVATION AS
 JU3910'THE STATION MARK.
 JU3910'
 JU3910'AZIMUTH MARK, A STANDARD DISK STAMPED GLASGOW 1961, IS CEMENTED
 JU3910'IN A DRILL HOLE IN THE EAST HEAD WALL OF A BOX CULVERT WHICH IS
 JU3910'LOCATED IN THE CENTER OF THE MEDIA STRIP BETWEEN THE WEST AND
 JU3910'EAST BOUND TRAFFIC LANE OF U.S. HIGHWAY 40.  IT IS 36.6 FEET
 JU3910'SOUTHWEST OF THE CENTER LINE OF THE EAST BOUND TRAFFIC LANE OF
 JU3910'HIGHWAY 40 AND 121.0 FEET SOUTHEAST OF A 10-INCH PINE TREE.
 JU3910'
 JU3910'TO REACH THE AZIMUTH MARK FROM THE STATION, GO EAST-SOUTHEAST ON
 JU3910'U.S. HIGHWAY 40 FOR 0.25 MILE TO THE AZIMUTH MARK ON THE LEFT AS
 JU3910'DESCRIBED ABOVE.
 JU3910'
 JU3910'BOUNDARY MONUMENT 79 WAS SEARCHED FOR BUT NOT FOUND.
 JU3910'
 JU3910'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JU3910
 JU3910                          STATION RECOVERY (1975)
 JU3910
 JU3910'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 JU3910'THE STATION AND BOTH REFERENCE MARKS WERE RECOVERED AND FOUND IN
 JU3910'GOOD CONDITION.  THE AZIMUTH MARK WAS FOUND TO HAVE BEEN REMOVED
 JU3910'FROM THE DRILL HOLE.  A NEW REFERENCE MARK 3 WAS PLACED IN THE
 JU3910'HOLE WHERE THE FORMER AZIMUTH MARK WAS.  A DIFFERENCE OF 0.03
 JU3910'FOOT OR 0.010 METER IN DISTANCE WAS NOTED TO REFERENCE MARK
 JU3910'2.  THE ANGLE BETWEEN THE REFERENCE MARKS WERE WITHIN CLOSE
 JU3910'AGREEMENT WITH THE 1961 OBSERVATIONS.
 JU3910'
 JU3910'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JU3910'
 JU3910'THE STATION IS LOCATED ON THE NORTH SIDE OF U.S. HIGHWAY 40
 JU3910'ABOUT 2 MILES WEST OF GLASGOW, DELAWARE AND 2-1/2 MILES EAST OF
 JU3910'ELKTON, MARYLAND.  IT IS ON HIGHWAY RIGHT-OF-WAY.
 JU3910'
 JU3910'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40
 JU3910'AND STATE HIGHWAY 213 IN ELKTON, GO EAST ON U.S. HIGHWAY 40 FOR
 JU3910'2.4 MILES TO THE STATION ON THE LEFT AT THE MARYLAND-DELAWARE
 JU3910'STATE LINES.
 JU3910'
 JU3910'THE STATION MARK IS A STANDARD DISK STAMPED GLASGOW 1961, SET
 JU3910'IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS FLUSH
 JU3910'WITH THE SURFACE.  IT IS 35.5 FEET NORTH OF THE CENTER OF THE
 JU3910'WEST BOUND LANE OF U.S. HIGHWAY 40, 10 FEET NORTHEAST OF A SIGN
 JU3910'MARYLAND WELCOMES YOU, AND 2 FEET SOUTH OF A WITNESS POST.  (NOTE
 JU3910'1A 7A)
 JU3910'
 JU3910'REFERENCE MARK 1 IS A STANDARD DISK STAMPED GLASGOW NO 1 1961,
 JU3910'SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS
 JU3910'FLUSH WITH THE SURFACE.  IT IS 43 FEET EAST-NORTHEAST OF THE
 JU3910'WITNESS POST, 35.5 FEET NORTH OF THE CENTER OF THE WEST BOUND
 JU3910'LANE OF U.S. HIGHWAY 40 AND 44 FEET NORTHEAST OF THE SIGN.  (NOTE
 JU3910'11A)
 JU3910'
 JU3910'REFERENCE MARK 2 IS A STANDARD DISK STAMPED GLASGOW NO 2 1961,
 JU3910'SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT WHICH IS
 JU3910'FLUSH WITH THE SURFACE.  IT IS 40 FEET WEST OF THE WITNESS POST
 JU3910'AND 35.5 FEET NORTH OF THE CENTER LINE OF THE WEST BOUND LANE OF
 JU3910'U.S. HIGHWAY 40.  (NOTE 11A)
 JU3910'
 JU3910'THE AZIMUTH MARK IS A STANDARD DISK STAMPED GLASGOW 1961 NO 3
 JU3910'1975 AZI, CEMENTED IN A DRILL HOLE IN THE SOUTH SIDE OF A SQUARE
 JU3910'CONCRETE CATCH BASIN BETWEEN THE TWO LANES OF U.S. HIGHWAY
 JU3910'40.  THE DISK IS FLUSH WITH THE SURFACE.  IT IS 36.5 FEET
 JU3910'SOUTHWEST OF THE CENTER OF THE WEST BOUND LANE OF U.S. HIGHWAY
 JU3910'40, 3 FEET SOUTH OF THE CENTER OF THE CATCH BASIN AND 2.1 FEET
 JU3910'WEST OF A WITNESS POST. (NOTE DESCRIBED)
 JU3910'
 JU3910'TO REACH THE AZIMUTH MARK FROM THE STATION, GO EAST ON
 JU3910'U.S. HIGHWAY 40 FOR 0.25 MILE TO THE MARK ON THE LEFT IN THE
 JU3910'MEDIUM STRIP.
 JU3910'
 JU3910'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3910'2 MILES WEST OF GLASGOW, DELAWARE.
 JU3910
 JU3910                          STATION RECOVERY (1976)
 JU3910
 JU3910'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 JU3910'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JU3910'CONDITION AS DESCRIBED IN THE 1975 DESCRIPTION.  ALL DISTANCES
 JU3910'AND DIRECTIONS AGREED WITH THE 1975 DESCRIPTION.
 JU3910'
 JU3910'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 79 WAS
 JU3910'ESTABLISHED AT THIS DATE, SEE DESCRIPTION THEREOF.
 JU3910'
 JU3910'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JU3910'2 MILES WEST OF GLASGOW.
 JU3910
 JU3910                          STATION RECOVERY (2003)
 JU3910
 JU3910'RECOVERY NOTE BY US POWER SQUADRON 2003 (RG)
 JU3910'WITNESS POST IS BENT FROM BEING HIT BY MOWERS AND COULD NOT BE
 JU3910'STRAIGHTENED.
 JU3910
 JU3910                          STATION RECOVERY (2010)
 JU3910
 JU3910'RECOVERY NOTE BY GEOCACHING 2010 (LPC)
 JU3910'MARK NOT FOUND.
 JU3910
 JU3910                          STATION RECOVERY (2014)
 JU3910
 JU3910'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JU3910'NOT RECOVERED.  NOTE-THE AREA APPEARS TO HAVE BEEN REGRADED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7162 ***********************************************************************
 HV7162  DESIGNATION -  GLEBE
 HV7162  PID         -  HV7162
 HV7162  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7162  COUNTRY     -  US
 HV7162  USGS QUAD   -  SOUTH RIVER (2016)
 HV7162
 HV7162                         *CURRENT SURVEY CONTROL
 HV7162  ______________________________________________________________________
 HV7162* NAD 83(1991) POSITION- 38 55 57.03628(N) 076 31 42.32102(W)   ADJUSTED
 HV7162* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV7162  ______________________________________________________________________
 HV7162  GEOID HEIGHT    -        -33.336 (meters)                     GEOID18
 HV7162  LAPLACE CORR    -         -4.17  (seconds)                    DEFLEC18
 HV7162  HORZ ORDER      -  THIRD
 HV7162
 HV7162.The horizontal coordinates were established by classical geodetic methods
 HV7162.and adjusted by the National Geodetic Survey in January 1992.
 HV7162
 HV7162.The orthometric height was scaled from a topographic map.
 HV7162
 HV7162.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7162.GEOID18 height accuracy estimate available here.
 HV7162
 HV7162.Click photographs - Photos may exist for this station.
 HV7162
 HV7162.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7162
 HV7162. The following values were computed from the NAD 83(1991) position.
 HV7162
 HV7162;                    North         East     Units Scale Factor Converg.
 HV7162;SPC MD       -   140,619.800   440,887.630   MT  0.99995034   +0 17 45.5
 HV7162;SPC MD       -   461,350.13  1,446,478.83   sFT  0.99995034   +0 17 45.5
 HV7162;UTM  18      - 4,310,397.728   367,522.237   MT  0.99981611   -0 57 38.2
 HV7162
 HV7162!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7162!SPC MD       -   1.00000448  x   0.99995034  =   0.99995482
 HV7162!UTM  18      -   1.00000448  x   0.99981611  =   0.99982059
 HV7162
 HV7162:                Primary Azimuth Mark                     Grid Az
 HV7162:SPC MD       -  ALMSHOUSE RESET                          319 20 55.7
 HV7162:UTM  18      -  ALMSHOUSE RESET                          320 36 19.4
 HV7162
 HV7162_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6752210397(NAD 83)
 HV7162
 HV7162|---------------------------------------------------------------------|
 HV7162| PID    Reference Object                     Distance      Geod. Az  |
 HV7162|                                                           dddmmss.s |
 HV7162| CX2800 GLEBE RM                             10.729 METERS 22807     |
 HV7162| HV7158 GLEBE CREEK RED ROOF HSE E CHY      APPROX. 0.8 KM 3023537.8 |
 HV7162| HV7113 ALMSHOUSE RESET                     APPROX. 1.3 KM 3193841.2 |
 HV7162|---------------------------------------------------------------------|
 HV7162
 HV7162                          SUPERSEDED SURVEY CONTROL
 HV7162
 HV7162  NAD 83(1986)-  38 55 57.03284(N)    076 31 42.33227(W) AD(       ) 3
 HV7162  NAD 27      -  38 55 56.62100(N)    076 31 43.46900(W) AD(       ) 3
 HV7162
 HV7162.Superseded values are not recommended for survey control.
 HV7162
 HV7162.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7162.See file dsdata.pdf to determine how the superseded data were derived.
 HV7162
 HV7162_MARKER: DS = TRIANGULATION STATION DISK
 HV7162_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7162_STAMPING: GLEBE 1933
 HV7162_MARK LOGO: CGS
 HV7162_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7162+STABILITY: SURFACE MOTION
 HV7162
 HV7162  HISTORY     - Date     Condition        Report By
 HV7162  HISTORY     - 1933     MONUMENTED       CGS
 HV7162  HISTORY     - 1937     SEE DESCRIPTION  CGS
 HV7162
 HV7162                          STATION DESCRIPTION
 HV7162
 HV7162'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7162'ON THE SW SIDE OF SOUTH RIVER ABOUT 3 MILES ABOVE THE MOUTH, ON
 HV7162'CEDAR POINT JUST S OF GLEBE CREEK, ABOUT 500 FEET W OF THE EXTREME
 HV7162'END OF THE POINT.  STATION IS ON A WOODED BLUFF ABOUT 15 FEET
 HV7162'ABOVE HIGH WATER AND ABOUT 100 FEET E OF THE HIGHEST POINT OF THE
 HV7162'BLUFF.  IT IS ABOUT 6 FEET FROM THE EDGE OF THE BANK.
 HV7162'
 HV7162'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7162'CONCRETE AS DESCRIBED.
 HV7162
 HV7162                          STATION RECOVERY (1937)
 HV7162
 HV7162'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (REA)
 HV7162'BEING ON CEDAR POINT MAY 31, 1937, IT WAS OBSERVED THAT STATION
 HV7162'GLEBE DUE TO EROSION OF THE HIGH BANK HAD BECOME DISLODGED AND HAD
 HV7162'FALLEN TO THE BEACH.  STATUS OF REFERENCE MARK UNKNOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7158 ***********************************************************************
 HV7158  DESIGNATION -  GLEBE CREEK RED ROOF HSE E CHY
 HV7158  PID         -  HV7158
 HV7158  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7158  COUNTRY     -  US
 HV7158  USGS QUAD   -  SOUTH RIVER (2016)
 HV7158
 HV7158                         *CURRENT SURVEY CONTROL
 HV7158  ______________________________________________________________________
 HV7158* NAD 83(1991) POSITION- 38 56 10.86784(N) 076 32 10.02139(W)   ADJUSTED
 HV7158  ______________________________________________________________________
 HV7158  GEOID HEIGHT    -        -33.313 (meters)                     GEOID18
 HV7158  LAPLACE CORR    -         -4.27  (seconds)                    DEFLEC18
 HV7158  HORZ ORDER      -  THIRD
 HV7158
 HV7158.The horizontal coordinates were established by classical geodetic methods
 HV7158.and adjusted by the National Geodetic Survey in January 1992.
 HV7158
 HV7158.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7158.GEOID18 height accuracy estimate available here.
 HV7158
 HV7158.Click photographs - Photos may exist for this station.
 HV7158
 HV7158.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7158
 HV7158. The following values were computed from the NAD 83(1991) position.
 HV7158
 HV7158;                    North         East     Units Scale Factor Converg.
 HV7158;SPC MD       -   141,042.883   440,218.321   MT  0.99995040   +0 17 28.1
 HV7158;SPC MD       -   462,738.19  1,444,282.94   sFT  0.99995040   +0 17 28.1
 HV7158;UTM  18      - 4,310,835.329   366,862.455   MT  0.99981827   -0 57 55.9
 HV7158
 HV7158_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6686210835(NAD 83)
 HV7158
 HV7158                          SUPERSEDED SURVEY CONTROL
 HV7158
 HV7158  NAD 83(1986)-  38 56 10.86441(N)    076 32 10.03256(W) AD(       ) 3
 HV7158  NAD 27      -  38 56 10.45700(N)    076 32 11.17700(W) AD(       ) 3
 HV7158
 HV7158.Superseded values are not recommended for survey control.
 HV7158
 HV7158.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7158.See file dsdata.pdf to determine how the superseded data were derived.
 HV7158
 HV7158_MARKER: 85 = CHIMNEY
 HV7158
 HV7158  HISTORY     - Date     Condition        Report By
 HV7158  HISTORY     - 1933     FIRST OBSERVED   CGS
 HV7158
 HV7158                          STATION DESCRIPTION
 HV7158
 HV7158'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7158'ON THE SOUTH SHORE OF SOUTH RIVER ON THE POINT AT THE WEST SIDE OF
 HV7158'THE ENTRANCE TO GLEBE CREEK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7138 ***********************************************************************
 HV7138  DESIGNATION -  GLEN
 HV7138  PID         -  HV7138
 HV7138  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7138  COUNTRY     -  US
 HV7138  USGS QUAD   -  SOUTH RIVER (2016)
 HV7138
 HV7138                         *CURRENT SURVEY CONTROL
 HV7138  ______________________________________________________________________
 HV7138* NAD 83(1991) POSITION- 38 57 40.56781(N) 076 35 20.27690(W)   ADJUSTED
 HV7138* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 HV7138  ______________________________________________________________________
 HV7138  GEOID HEIGHT    -        -33.142 (meters)                     GEOID18
 HV7138  LAPLACE CORR    -         -5.16  (seconds)                    DEFLEC18
 HV7138  HORZ ORDER      -  THIRD
 HV7138
 HV7138.The horizontal coordinates were established by classical geodetic methods
 HV7138.and adjusted by the National Geodetic Survey in January 1992.
 HV7138
 HV7138.The orthometric height was scaled from a topographic map.
 HV7138
 HV7138.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7138.GEOID18 height accuracy estimate available here.
 HV7138
 HV7138.Click photographs - Photos may exist for this station.
 HV7138
 HV7138.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7138
 HV7138. The following values were computed from the NAD 83(1991) position.
 HV7138
 HV7138;                    North         East     Units Scale Factor Converg.
 HV7138;SPC MD       -   143,786.872   435,623.950   MT  0.99995096   +0 15 28.7
 HV7138;SPC MD       -   471,740.76  1,429,209.58   sFT  0.99995096   +0 15 28.7
 HV7138;UTM  18      - 4,313,679.087   362,329.950   MT  0.99983338   -0 59 57.4
 HV7138
 HV7138!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7138!SPC MD       -   1.00000398  x   0.99995096  =   0.99995494
 HV7138!UTM  18      -   1.00000398  x   0.99983338  =   0.99983736
 HV7138
 HV7138:                Primary Azimuth Mark                     Grid Az
 HV7138:SPC MD       -  BEAR                                     300 58 21.3
 HV7138:UTM  18      -  BEAR                                     302 13 47.4
 HV7138
 HV7138_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6232913679(NAD 83)
 HV7138
 HV7138|---------------------------------------------------------------------|
 HV7138| PID    Reference Object                     Distance      Geod. Az  |
 HV7138|                                                           dddmmss.s |
 HV7138| HV7139 PORTER                              382.826 METERS 03947     |
 HV7138| CX2801 GLEN RM                              14.081 METERS 23509     |
 HV7138| HV7137 ISLE                                369.523 METERS 24400     |
 HV7138| HV7110 BEAR                                453.168 METERS 3011350.0 |
 HV7138|---------------------------------------------------------------------|
 HV7138
 HV7138                          SUPERSEDED SURVEY CONTROL
 HV7138
 HV7138  NAD 83(1986)-  38 57 40.56453(N)    076 35 20.28804(W) AD(       ) 3
 HV7138  NAD 27      -  38 57 40.16500(N)    076 35 21.41800(W) AD(       ) 3
 HV7138
 HV7138.Superseded values are not recommended for survey control.
 HV7138
 HV7138.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7138.See file dsdata.pdf to determine how the superseded data were derived.
 HV7138
 HV7138_MARKER: DS = TRIANGULATION STATION DISK
 HV7138_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7138_STAMPING: GLEN 1933
 HV7138_MARK LOGO: CGS
 HV7138_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7138+STABILITY: SURFACE MOTION
 HV7138
 HV7138  HISTORY     - Date     Condition        Report By
 HV7138  HISTORY     - 1933     MONUMENTED       CGS
 HV7138
 HV7138                          STATION DESCRIPTION
 HV7138
 HV7138'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7138'STATION IS ON THE S SHORE OF SOUTH RIVER ON THE NW SIDE OF BEARDS
 HV7138'POINT, ABOUT 75 YARDS SW OF THE NORTHERN EXTREMITY OF THE POINT
 HV7138'AND 90 YARDS W OF AN OLD WHARF, ABOUT 5 METERS W OF AN OLD ROAD
 HV7138'THAT MAKES A CIRCLE ON THE POINT, ON A RIDGE BETWEEN THE ROAD AND
 HV7138'THE SHORELINE ON THE W.
 HV7138'
 HV7138'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7138'CONCRETE AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI9434 ***********************************************************************
 AI9434  DESIGNATION -  GLEN E5
 AI9434  PID         -  AI9434
 AI9434  STATE/COUNTY-  MD/BALTIMORE
 AI9434  COUNTRY     -  US
 AI9434  USGS QUAD   -  MIDDLE RIVER (2016)
 AI9434
 AI9434                         *CURRENT SURVEY CONTROL
 AI9434  ______________________________________________________________________
 AI9434* NAD 83(2011) POSITION- 39 19 15.74363(N) 076 24 13.34265(W)   ADJUSTED
 AI9434* NAD 83(2011) ELLIP HT-   -30.646 (meters)        (06/27/12)   ADJUSTED
 AI9434* NAD 83(2011) EPOCH   -  2010.00
 AI9434* NAVD 88 ORTHO HEIGHT -     2.4   (meters)        8.    (feet) GPS OBS
 AI9434  ______________________________________________________________________
 AI9434  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI9434  GEOID HEIGHT    -        -33.050 (meters)                     GEOID99
 AI9434  GEOID HEIGHT    -        -33.053 (meters)                     GEOID18
 AI9434  NAD 83(2011) X  -  1,161,478.636 (meters)                     COMP
 AI9434  NAD 83(2011) Y  - -4,802,336.456 (meters)                     COMP
 AI9434  NAD 83(2011) Z  -  4,019,933.175 (meters)                     COMP
 AI9434  LAPLACE CORR    -         -2.40  (seconds)                    DEFLEC18
 AI9434
 AI9434  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI9434  Standards:
 AI9434         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI9434            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI9434  -------------------------------------------------------------------
 AI9434  NETWORK    0.14   0.65           0.06   0.05   0.33      0.03406809
 AI9434  -------------------------------------------------------------------
 AI9434  Click here for local accuracies and other accuracy information.
 AI9434
 AI9434.This mark is at Martin State Airport (MTN)
 AI9434
 AI9434.The horizontal coordinates were established by GPS observations
 AI9434.and adjusted by the National Geodetic Survey in June 2012.
 AI9434
 AI9434.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI9434.been affixed to the stable North American tectonic plate. See 
 AI9434.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI9434
 AI9434.The horizontal coordinates are valid at the epoch date displayed above
 AI9434.which is a decimal equivalence of Year/Month/Day.
 AI9434
 AI9434.The orthometric height was determined by GPS observations and a
 AI9434.high-resolution geoid model.
 AI9434
 AI9434.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI9434.GEOID18 height accuracy estimate available here.
 AI9434
 AI9434.Click photographs - Photos may exist for this station.
 AI9434
 AI9434.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI9434
 AI9434.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI9434
 AI9434.The ellipsoidal height was determined by GPS observations
 AI9434.and is referenced to NAD 83.
 AI9434
 AI9434. The following values were computed from the NAD 83(2011) position.
 AI9434
 AI9434;                    North         East     Units Scale Factor Converg.
 AI9434;SPC MD       -   183,814.224   451,419.144   MT  0.99997998   +0 22 27.3
 AI9434;SPC MD       -   603,063.83  1,481,030.97   sFT  0.99997998   +0 22 27.3
 AI9434;UTM  18      - 4,353,343.041   378,999.392   MT  0.99978027   -0 53 22.5
 AI9434
 AI9434!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI9434!SPC MD       -   1.00000481  x   0.99997998  =   0.99998479
 AI9434!UTM  18      -   1.00000481  x   0.99978027  =   0.99978508
 AI9434
 AI9434_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7899953343(NAD 83)
 AI9434
 AI9434                          SUPERSEDED SURVEY CONTROL
 AI9434
 AI9434  NAD 83(2007)-  39 19 15.74394(N)    076 24 13.34356(W) AD(2002.00) 0
 AI9434  ELLIP H (02/10/07)  -30.628  (m)                       GP(2002.00)    
 AI9434  ELLIP H (08/09/02)  -30.626  (m)                       GP(       ) 3 2
 AI9434  NAD 83(1991)-  39 19 15.74397(N)    076 24 13.34383(W) AD(       ) 1
 AI9434  ELLIP H (01/19/01)  -30.618  (m)                       GP(       ) 4 1
 AI9434
 AI9434.Superseded values are not recommended for survey control.
 AI9434
 AI9434.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI9434.See file dsdata.pdf to determine how the superseded data were derived.
 AI9434
 AI9434_MARKER: DD = SURVEY DISK
 AI9434_SETTING: 0 = UNSPECIFIED SETTING
 AI9434_STAMPING: GLEN E5
 AI9434_MARK LOGO: DMA
 AI9434_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI9434_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI9434_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI9434+SATELLITE: SATELLITE OBSERVATIONS - August 25, 2000
 AI9434
 AI9434  HISTORY     - Date     Condition        Report By
 AI9434  HISTORY     - UNK      MONUMENTED       DMA
 AI9434  HISTORY     - 20000825 GOOD             NGS
 AI9434
 AI9434                          STATION DESCRIPTION
 AI9434
 AI9434'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (DMM)
 AI9434'STATION IS LOCATED 16 KM EAST OF THE APPROXIMATE CENTER OF BALTIMORE,
 AI9434'5.5 KM SOUTH OF WHITE MARSH AND 1.5 KM EAST OF MIDDLE RIVER. IT IS
 AI9434'LOCATED AT THE CENTER OF A COMPASS ROSE JUST NORTHWEST OF THE EAST END
 AI9434'OF THE RUNWAY AT MARTIN STATE AIRPORT
 AI9434'
 AI9434'TO REACH FROM US ROUTE 40 AT THE CITY OF BALTIMORE LINE, DRIVE
 AI9434'NORTHEAST ON US 40 FOR 6.5 KM TO THE JUNCTION WITH STATE ROUTE 700.
 AI9434'TURN RIGHT (SOUTH) ON SR 700, DRIVE SOUTH ON SR 700 FOR 2.5 KM UNDER
 AI9434'AN OVERPASS THEN EXIT RIGHT ONTO STATE ROUTE 150 (EAST). DRIVE EAST ON
 AI9434'SR 150 FOR 1.0 KM THEN TURN RIGHT (SOUTH) ON STATE ROUTE 587. DRIVE
 AI9434'SOUTH TO THE ENTRANCE TO THE AIRPORT CONTROL TOWER AND AIRPORT OFFICES
 AI9434'ON THE LEFT (EAST).
 AI9434'
 AI9434'CONTACT THE AIRPORT MANAGER'S OFFICE ON THE THIRD FLOOR PRIOR TO
 AI9434'ACCESSING THE FIELD. THEY WILL ARRANGE FOR AN ESCORT.
 AI9434'
 AI9434'TO REACH FROM THE AIRPORT RAMP AT THE BASE OF THE CONTROL TOWER,
 AI9434'DRIVE SOUTHEAST ON THE TAXIWAY RUNNING PARALLEL TO THE SOUTHEAST END
 AI9434'OF THE RUNWAY. CROSS THE RUNWAY, THEN DRIVE NORTHWEST TO A STUB
 AI9434'TAXIWAY ON THE RIGHT (NORTH). THE STATION IS LOCATED AT THE CENTER OF
 AI9434'THE CIRCULAR END OF THE STUB TAXIWAY.
 AI9434'
 AI9434'IT IS A DMA SURVEY DISK STAMPED GLEN E5 SET IN A DRILL HOLE AT THE
 AI9434'CENTER OF AN EIGHT FT DIAMETER CIRCLE ENCOMPASSED BY A METAL RING WITH
 AI9434'AN ADDITIONAL CONCRETE SECTION BETWEEN THE METAL RING AND THE ASPHALT
 AI9434'TAXIWAY.
 AI9434'
 AI9434'THE DISK AS BEEN ABRADED AND ADDITIONAL STAMPING IS NO LONGER LEGIBLE.
 AI9434'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4298 ***********************************************************************
 JV4298  DESIGNATION -  GLENMONT
 JV4298  PID         -  JV4298
 JV4298  STATE/COUNTY-  MD/MONTGOMERY
 JV4298  COUNTRY     -  US
 JV4298  USGS QUAD   -  KENSINGTON (2016)
 JV4298
 JV4298                         *CURRENT SURVEY CONTROL
 JV4298  ______________________________________________________________________
 JV4298* NAD 83(1991) POSITION- 39 03 41.61876(N) 077 03 04.82523(W)   ADJUSTED
 JV4298* NAVD 88 ORTHO HEIGHT -   142.8   (meters)      469.    (feet) VERTCON3
 JV4298  ______________________________________________________________________
 JV4298  GEOID HEIGHT    -        -31.890 (meters)                     GEOID18
 JV4298  LAPLACE CORR    -         -3.49  (seconds)                    DEFLEC18
 JV4298  HORZ ORDER      -  SECOND
 JV4298
 JV4298.The horizontal coordinates were established by classical geodetic methods
 JV4298.and adjusted by the National Geodetic Survey in January 1992.
 JV4298
 JV4298.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4298.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4298
 JV4298.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4298.GEOID18 height accuracy estimate available here.
 JV4298
 JV4298.Click photographs - Photos may exist for this station.
 JV4298
 JV4298.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4298
 JV4298. The following values were computed from the NAD 83(1991) position.
 JV4298
 JV4298;                    North         East     Units Scale Factor Converg.
 JV4298;SPC MD       -   154,841.374   395,556.627   MT  0.99995509   -0 01 56.0
 JV4298;SPC MD       -   508,008.74  1,297,755.37   sFT  0.99995509   -0 01 56.0
 JV4298;UTM  18      - 4,325,610.676   322,516.978   MT  0.99998788   -1 17 34.8
 JV4298
 JV4298!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4298!SPC MD       -   0.99998260  x   0.99995509  =   0.99993769
 JV4298!UTM  18      -   0.99998260  x   0.99998788  =   0.99997048
 JV4298
 JV4298:                Primary Azimuth Mark                     Grid Az
 JV4298:SPC MD       -  GLENMONT AZ MK                           157 49 16.8
 JV4298:UTM  18      -  GLENMONT AZ MK                           159 04 55.6
 JV4298
 JV4298_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2251625610(NAD 83)
 JV4298
 JV4298|---------------------------------------------------------------------|
 JV4298| PID    Reference Object                     Distance      Geod. Az  |
 JV4298|                                                           dddmmss.s |
 JV4298| JV4283 GLENMONT RM 1                        42.361 METERS 07214     |
 JV4298| CJ9875 GLENMONT AZ MK                                     1574720.8 |
 JV4298| JV4305 WHEATON RAD STA WTOP SW MAST        APPROX. 2.2 KM 1690614.6 |
 JV4298| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 2.3 KM 1873425.2 |
 JV4298| CJ9876 GLENMONT RM 2                        41.898 METERS 19242     |
 JV4298| JV4269 BETHESDA NAVAL MED CTR BCN          APPROX. 7.6 KM 2091904.2 |
 JV4298| HV4103 BETHESDA BRADLEY HILLS S SPIPE      APPROX.10.5 KM 2104810.9 |
 JV4298| JV4297 GLENMONT RM 3                         8.889 METERS 27445     |
 JV4298| JV4376 ROCKVILLE SMALL MUN TANK            APPROX. 9.9 KM 2871444.7 |
 JV4298|---------------------------------------------------------------------|
 JV4298
 JV4298                          SUPERSEDED SURVEY CONTROL
 JV4298
 JV4298  NAD 83(1986)-  39 03 41.61820(N)    077 03 04.83485(W) AD(       ) 2
 JV4298  NAD 27      -  39 03 41.22611(N)    077 03 05.91327(W) AD(       ) 2
 JV4298  NGVD 29 (07/19/86)  143.0    (m)          469.     (f) VERT ANG       
 JV4298
 JV4298.Superseded values are not recommended for survey control.
 JV4298
 JV4298.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4298.See file dsdata.pdf to determine how the superseded data were derived.
 JV4298
 JV4298_MARKER: DS = TRIANGULATION STATION DISK
 JV4298_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4298_STAMPING: GLENMONT 1943
 JV4298_MARK LOGO: CGS
 JV4298_PROJECTION: FLUSH
 JV4298_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4298+STABILITY: SURFACE MOTION
 JV4298_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV4298+SATELLITE: SATELLITE OBSERVATIONS - May 12, 2009
 JV4298
 JV4298  HISTORY     - Date     Condition        Report By
 JV4298  HISTORY     - 1943     MONUMENTED       CGS
 JV4298  HISTORY     - 1954     GOOD             MDBCSM
 JV4298  HISTORY     - 1969     GOOD             CGS
 JV4298  HISTORY     - 1987     GOOD             USPSQD
 JV4298  HISTORY     - 19950818 GOOD             USPSQD
 JV4298  HISTORY     - 20090512 GOOD             JMTMD
 JV4298
 JV4298                          STATION DESCRIPTION
 JV4298
 JV4298'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4298'THE STATION IS LOCATED ON A SMALL HILL JUST N OF GLENMONT, ABOUT 3
 JV4298'MILES W OF U. S. HIGHWAY 29 AND ABOUT 0.3 MILE N OF THE JUNCTION OF
 JV4298'STATE HIGHWAYS 182 AND 97 AND AT THE PROPOSED SITE OF A NEW WATER
 JV4298'TANK OF THE WASHINGTON SUBURBAN SANITARY COMMISSION AND ON LAND OWNED
 JV4298'BY THEM.  IT IS LOCATED AT THE NE CORNER OF THE W.S.S.C. PROPERTY,
 JV4298'ABOUT 120 FEET E OF THE HIGHEST POINT OF THE HILL, 140 FEET W
 JV4298'OF THE E FENCE AND 140 FEET N OF THE S FENCE.  IT PROJECTS ABOUT 4
 JV4298'INCHES AND THE DISK IS STAMPED GLENMONT 1943.
 JV4298'
 JV4298'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE DISKS
 JV4298'SET IN CONCRETE, AS DESCRIBED.
 JV4298'
 JV4298'REFERENCE MARK NO. 1 IS E OF THE STATION, 1 FOOT E OF A BOARD FENCE.
 JV4298'IT IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED GLENMONT NO. 1
 JV4298'1943.
 JV4298'
 JV4298'REFERENCE MARK NO. 2 IS SW OF THE STATION, 1 FOOT N OF A WIRE FENCE.
 JV4298'IT PROJECTS ABOUT 6 INCHES AND THE DISK IS STAMPED GLENMONT NO. 2
 JV4298'1943.
 JV4298'
 JV4298'THE AZIMUTH MARK IS LOCATED ABOUT 0.3 MILE S OF THE STATION, IN
 JV4298'FRONT OF A LARGE SIGN BOARD ABOUT 50 YARDS E OF THE JUNCTION OF
 JV4298'STATE HIGHWAYS 182 AND 97, AND 46 FEET S OF THE CENTER OF HIGHWAY
 JV4298'182.  IT PROJECTS ABOUT 6 INCHES AND THE DISK IS STAMPED GLENMONT
 JV4298'1943.
 JV4298'
 JV4298'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 97 AND 182
 JV4298'GO N ON HIGHWAY 97 TO A Y AT XANDERS STORE.  TAKE RIGHT FORK FOR 0.2
 JV4298'MILE TO A SMALL YELLOW CABIN ON THE LEFT.  TURN LEFT THROUGH BAR GATE
 JV4298'THEN BEAR LEFT FOR ABOUT 250 YARDS TO THE STATION.
 JV4298'
 JV4298'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT GAITHERSBURG.
 JV4298'
 JV4298'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT OLNEY.
 JV4298'
 JV4298'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STABLER 1869.
 JV4298'
 JV4298'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WHEATON.
 JV4298'
 JV4298'HEIGHT OF LIGHT ABOVE STATION MARK - 30 METERS.
 JV4298
 JV4298                          STATION RECOVERY (1954)
 JV4298
 JV4298'RECOVERY NOTE BY MD BUR SURV AND MAPS 1954
 JV4298'STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.
 JV4298'STATION IS NOW 70 FT. E OF THE NEW GLENMONT TANK, 4 FT. W OF THE NE
 JV4298'CORNER OF A WIRE FENCE AROUND THE TANK.
 JV4298'
 JV4298'REFERENCE MARK 1 IS AT THE SW CORNER OF A DIRT ENTRANCE AT STATE
 JV4298'ROAD 182.
 JV4298'
 JV4298'AZIMUTH MARK SEARCHED FOR BUT NOT RECOVERED.  ASSUMED LOST BY THE
 JV4298'CONSTRUCTION OF STATE ROAD 97.
 JV4298'
 JV4298'WTOP SW RADIO MAST IS STILL VISIBLE FROM THE STATION.
 JV4298
 JV4298                          STATION RECOVERY (1969)
 JV4298
 JV4298'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4298'THE STATION MARK AND REFERENCE MARK 2 WERE RECOVERED IN GOOD
 JV4298'CONDITION.  REFERENCE MARK 1 AND THE AZIMUTH MARK WERE NOT
 JV4298'RECOVERED.  DUE TO THE PROXIMITY OF THE STATION MARK TO A FENCE A
 JV4298'TOWER COULD NOT BE BUILT OVER IT.  A REFERENCE MARK 3 WAS
 JV4298'ESTABLISHED AND OCCUPIED.  A TRAVERSE CONNECTION WAS MADE TO THE
 JV4298'STATION, THE DISTANCE BEING 8.877 METERS OR (29.12 FEET) WEST.
 JV4298'
 JV4298'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN GLENMONT.
 JV4298
 JV4298                          STATION RECOVERY (1987)
 JV4298
 JV4298'RECOVERY NOTE BY US POWER SQUADRON 1987 (JL)
 JV4298'RECOVERED IN GOOD CONDITION.
 JV4298
 JV4298                          STATION RECOVERY (1995)
 JV4298
 JV4298'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4298'RECOVERED IN GOOD CONDITION.
 JV4298
 JV4298                          STATION RECOVERY (2009)
 JV4298
 JV4298'RECOVERY NOTE BY JMT ENGINEERING 2009 (BB)
 JV4298'BAD SITE FOR GPS (X,Y,Z, NOT CHECKED)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4283 ***********************************************************************
 JV4283  DESIGNATION -  GLENMONT RM 1
 JV4283  PID         -  JV4283
 JV4283  STATE/COUNTY-  MD/MONTGOMERY
 JV4283  COUNTRY     -  US
 JV4283  USGS QUAD   -  KENSINGTON (2016)
 JV4283
 JV4283                         *CURRENT SURVEY CONTROL
 JV4283  ______________________________________________________________________
 JV4283* NAD 83(1991) POSITION- 39 03 42.03773(N) 077 03 03.14722(W)   ADJUSTED
 JV4283* NAVD 88 ORTHO HEIGHT -   142.    (meters)      466.    (feet) SCALED
 JV4283  ______________________________________________________________________
 JV4283  GEOID HEIGHT    -        -31.891 (meters)                     GEOID18
 JV4283  LAPLACE CORR    -         -3.50  (seconds)                    DEFLEC18
 JV4283  HORZ ORDER      -  THIRD
 JV4283
 JV4283.The horizontal coordinates were established by classical geodetic methods
 JV4283.and adjusted by the National Geodetic Survey in January 1992.
 JV4283
 JV4283.The orthometric height was scaled from a topographic map.
 JV4283
 JV4283.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4283.GEOID18 height accuracy estimate available here.
 JV4283
 JV4283.Click photographs - Photos may exist for this station.
 JV4283
 JV4283.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4283
 JV4283. The following values were computed from the NAD 83(1991) position.
 JV4283
 JV4283;                    North         East     Units Scale Factor Converg.
 JV4283;SPC MD       -   154,854.271   395,596.975   MT  0.99995509   -0 01 54.9
 JV4283;SPC MD       -   508,051.05  1,297,887.74   sFT  0.99995509   -0 01 54.9
 JV4283;SPC VA N     - 2,155,838.079 3,625,415.577   MT  0.99997838   +0 54 15.9
 JV4283;SPC VA N     - 7,072,945.43 11,894,384.27   sFT  0.99997838   +0 54 15.9
 JV4283;UTM  18      - 4,325,622.682   322,557.601   MT  0.99998771   -1 17 33.8
 JV4283
 JV4283!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4283!SPC MD       -   0.99998276  x   0.99995509  =   0.99993785
 JV4283!SPC VA N     -   0.99998276  x   0.99997838  =   0.99996114
 JV4283!UTM  18      -   0.99998276  x   0.99998771  =   0.99997047
 JV4283
 JV4283_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2255725622(NAD 83)
 JV4283
 JV4283                          SUPERSEDED SURVEY CONTROL
 JV4283
 JV4283  NAD 83(1986)-  39 03 42.03717(N)    077 03 03.15684(W) AD(       ) 3
 JV4283  NAD 27      -  39 03 41.64300(N)    077 03 04.23400(W) AD(       ) 3
 JV4283
 JV4283.Superseded values are not recommended for survey control.
 JV4283
 JV4283.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4283.See file dsdata.pdf to determine how the superseded data were derived.
 JV4283
 JV4283_MARKER: DR = REFERENCE MARK DISK
 JV4283_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4283_STAMPING: GLENMONT NO 1 1943
 JV4283_MARK LOGO: CGS
 JV4283_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4283+STABILITY: SURFACE MOTION
 JV4283
 JV4283  HISTORY     - Date     Condition        Report By
 JV4283  HISTORY     - 1943     MONUMENTED       CGS
 JV4283  HISTORY     - 19950816 MARK NOT FOUND   USPSQD
 JV4283
 JV4283                          STATION DESCRIPTION
 JV4283
 JV4283'DESCRIBED BY COAST AND GEODETIC SURVEY 1943
 JV4283'REFERENCE MARK NO. 1 IS E OF THE STATION, 1 FOOT E OF A BOARD FENCE.
 JV4283'IT IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED GLENMONT NO. 1
 JV4283'1943.
 JV4283
 JV4283                          STATION RECOVERY (1995)
 JV4283
 JV4283'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4283'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4297 ***********************************************************************
 JV4297  DESIGNATION -  GLENMONT RM 3
 JV4297  PID         -  JV4297
 JV4297  STATE/COUNTY-  MD/MONTGOMERY
 JV4297  COUNTRY     -  US
 JV4297  USGS QUAD   -  KENSINGTON (2016)
 JV4297
 JV4297                         *CURRENT SURVEY CONTROL
 JV4297  ______________________________________________________________________
 JV4297* NAD 83(1991) POSITION- 39 03 41.64259(N) 077 03 05.19320(W)   ADJUSTED
 JV4297* NAVD 88 ORTHO HEIGHT -   141.3   (meters)      464.    (feet) VERTCON3
 JV4297  ______________________________________________________________________
 JV4297  GEOID HEIGHT    -        -31.890 (meters)                     GEOID18
 JV4297  LAPLACE CORR    -         -3.49  (seconds)                    DEFLEC18
 JV4297  HORZ ORDER      -  FIRST
 JV4297
 JV4297.The horizontal coordinates were established by classical geodetic methods
 JV4297.and adjusted by the National Geodetic Survey in January 1992.
 JV4297
 JV4297.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4297.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4297
 JV4297.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4297.GEOID18 height accuracy estimate available here.
 JV4297
 JV4297.Click photographs - Photos may exist for this station.
 JV4297
 JV4297.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4297
 JV4297. The following values were computed from the NAD 83(1991) position.
 JV4297
 JV4297;                    North         East     Units Scale Factor Converg.
 JV4297;SPC MD       -   154,842.114   395,547.781   MT  0.99995509   -0 01 56.2
 JV4297;SPC MD       -   508,011.17  1,297,726.34   sFT  0.99995509   -0 01 56.2
 JV4297;UTM  18      - 4,325,611.610   322,508.150   MT  0.99998792   -1 17 35.0
 JV4297
 JV4297!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4297!SPC MD       -   0.99998284  x   0.99995509  =   0.99993793
 JV4297!UTM  18      -   0.99998284  x   0.99998792  =   0.99997076
 JV4297
 JV4297:                Primary Azimuth Mark                     Grid Az
 JV4297:SPC MD       -  WHEATON RAD STA WTOP CEN TOWER           167 54 39.6
 JV4297:UTM  18      -  WHEATON RAD STA WTOP CEN TOWER           169 10 18.4
 JV4297
 JV4297_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2250825611(NAD 83)
 JV4297
 JV4297|---------------------------------------------------------------------|
 JV4297| PID    Reference Object                     Distance      Geod. Az  |
 JV4297|                                                           dddmmss.s |
 JV4297| JV4292 COLESVILLE METH CH SPIRE            APPROX. 4.1 KM 0711905.1 |
 JV4297| JV4298 GLENMONT                              8.877 METERS 09445     |
 JV4297| JV4306 WHEATON RAD STA WTOP CEN TOWER      APPROX. 2.2 KM 1675243.4 |
 JV4297| CJ9876 GLENMONT RM 2                        41.626 METERS 18030     |
 JV4297| JV4299 WHEATON RAD STA WMDO TOWER          APPROX. 2.3 KM 1872121.4 |
 JV4297| JV4296 GLENMONT WSSC TANK                   17.361 METERS 26242     |
 JV4297|---------------------------------------------------------------------|
 JV4297
 JV4297                          SUPERSEDED SURVEY CONTROL
 JV4297
 JV4297  NAD 83(1986)-  39 03 41.64206(N)    077 03 05.20329(W) AD(       ) 1
 JV4297  NAD 27      -  39 03 41.24996(N)    077 03 06.28122(W) AD(       ) 1
 JV4297  NGVD 29 (07/19/86)  141.5    (m)          464.     (f) VERT ANG       
 JV4297
 JV4297.Superseded values are not recommended for survey control.
 JV4297
 JV4297.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4297.See file dsdata.pdf to determine how the superseded data were derived.
 JV4297
 JV4297_MARKER: DR = REFERENCE MARK DISK
 JV4297_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4297_STAMPING: GLENMONT 1943 RM 3 1969
 JV4297_MARK LOGO: CGS
 JV4297_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4297+STABILITY: SURFACE MOTION
 JV4297
 JV4297  HISTORY     - Date     Condition        Report By
 JV4297  HISTORY     - 1969     MONUMENTED       CGS
 JV4297  HISTORY     - 19950818 GOOD             USPSQD
 JV4297
 JV4297                          STATION DESCRIPTION
 JV4297
 JV4297'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4297'THE STATION IS IN GLENMONT, ON PROPERTY OF THE WASHINGTON SUBURBAN
 JV4297'SANITARY COMMISSION AND NEAR THE GLENMONT WSSC TANK.
 JV4297'
 JV4297'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 97 AND 182
 JV4297'IN GLENMONT, GO NORTH ON HIGHWAY 97 FOR 0.05 MILE TO A DRIVEWAY
 JV4297'RIGHT.  TURN RIGHT AND GO EAST ON DRIVEWAY FOR ABOUT 100 FEET TO A
 JV4297'GATE, THE WATER TANK AND THE STATION.
 JV4297'
 JV4297'STATION MARK IS A STANDARD REFERENCE MARK DISK, STAMPED GLENMONT 1943
 JV4297'RM 3 1969, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 JV4297'DIAMETER, THAT IS FLUSH WITH THE GROUND.  IT IS 54.0 FEET EAST OF
 JV4297'THE WATER TANK AND 34.5 FEET WEST OF THE EAST CORNER OF THE FENCE
 JV4297'AROUND THE AREA.
 JV4297'
 JV4297'GLENMONT 1943 IS A STANDARD STATION MARK DISK, STAMPED GLENMONT 1943,
 JV4297'SET IN THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 2
 JV4297'INCHES ABOVE THE GROUND.  IT IS 83.3 FEET EAST OF THE WATER TANK,
 JV4297'5.2 FEET WEST OF THE EAST CORNER OF THE FENCE AND ABOUT 2 FEET LOWER
 JV4297'THAN THE STATION.
 JV4297'
 JV4297'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED GLENMONT NO 2 1943, SET
 JV4297'IN THE TOP OF A 12 INCH SQUARE CONCRETE POST, THAT PROJECTS 6 INCHES
 JV4297'ABOVE THE GROUND.  IT IS 15.0 FEET EAST OF THE NORTHEAST CORNER OF
 JV4297'A CONCRETE BLOCK BUILDING, 7.3 FEET WEST OF THE SOUTHWEST CORNER OF
 JV4297'A BRICK BUILDING, 7.0 FEET WEST OF THE SOUTHEAST CORNER OF THE
 JV4297'FENCE, 1.3 FEET NORTH OF THE FENCE AND ABOUT 1 FOOT LOWER THAN THE
 JV4297'STATION.
 JV4297'
 JV4297'RESULTS OF A SECOND ORDER TRAVERSE.
 JV4297'
 JV4297'NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
 JV4297
 JV4297                          STATION RECOVERY (1995)
 JV4297
 JV4297'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4297'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4296 ***********************************************************************
 JV4296  DESIGNATION -  GLENMONT WSSC TANK
 JV4296  PID         -  JV4296
 JV4296  STATE/COUNTY-  MD/MONTGOMERY
 JV4296  COUNTRY     -  US
 JV4296  USGS QUAD   -  KENSINGTON (2016)
 JV4296
 JV4296                         *CURRENT SURVEY CONTROL
 JV4296  ______________________________________________________________________
 JV4296* NAD 83(1991) POSITION- 39 03 41.57107(N) 077 03 05.90946(W)   ADJUSTED
 JV4296  ______________________________________________________________________
 JV4296  GEOID HEIGHT    -        -31.890 (meters)                     GEOID18
 JV4296  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 JV4296  HORZ ORDER      -  THIRD
 JV4296
 JV4296.The horizontal coordinates were established by classical geodetic methods
 JV4296.and adjusted by the National Geodetic Survey in January 1992.
 JV4296
 JV4296.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4296.GEOID18 height accuracy estimate available here.
 JV4296
 JV4296.Click photographs - Photos may exist for this station.
 JV4296
 JV4296.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4296
 JV4296. The following values were computed from the NAD 83(1991) position.
 JV4296
 JV4296;                    North         East     Units Scale Factor Converg.
 JV4296;SPC MD       -   154,839.918   395,530.560   MT  0.99995509   -0 01 56.7
 JV4296;SPC MD       -   508,003.96  1,297,669.85   sFT  0.99995509   -0 01 56.7
 JV4296;UTM  18      - 4,325,609.794   322,490.884   MT  0.99998800   -1 17 35.5
 JV4296
 JV4296_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2249025609(NAD 83)
 JV4296
 JV4296                          SUPERSEDED SURVEY CONTROL
 JV4296
 JV4296  NAD 83(1986)-  39 03 41.57149(N)    077 03 05.91962(W) AD(       ) 3
 JV4296  NAD 27      -  39 03 41.17829(N)    077 03 06.99758(W) AD(       ) 3
 JV4296
 JV4296.Superseded values are not recommended for survey control.
 JV4296
 JV4296.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4296.See file dsdata.pdf to determine how the superseded data were derived.
 JV4296
 JV4296_MARKER: 53 = ELEVATED TANK
 JV4296_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4296+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2005
 JV4296
 JV4296  HISTORY     - Date     Condition        Report By
 JV4296  HISTORY     - 1952     FIRST OBSERVED   WSSC
 JV4296  HISTORY     - 1970     GOOD             NGS
 JV4296  HISTORY     - 19950818 GOOD             USPSQD
 JV4296  HISTORY     - 20011024 GOOD             USPSQD
 JV4296  HISTORY     - 20031201 GOOD             USPSQD
 JV4296  HISTORY     - 20050303 GOOD             USPSQD
 JV4296
 JV4296                          STATION DESCRIPTION
 JV4296
 JV4296'DESCRIBED BY WASH SUBURB SAN COMM 1952 (IWS)
 JV4296'THE TANK IS LOCATED ABOUT 6 MILES NORTH OF THE NORTH CORNER OF
 JV4296'THE DISTRICT OF COLUMBIA NEAR THE JUNCTION OF HIGHWAYS 97 AND
 JV4296'182.  IT IS 0.1 MILE NORTH OF XANDERS STORE.  THE TANK IS ABOUT
 JV4296'150 FEET HIGH, HAS 8 LEGS, PAINTED GREY, AND HAS A SPIRAL STAIRWAY
 JV4296'AROUND THE CENTER PIPE.
 JV4296
 JV4296                          STATION RECOVERY (1970)
 JV4296
 JV4296'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV4296'IN THE NORTH PART OF THE CITY OF WHEATON, IN THE 12,000 BLOCK
 JV4296'AND 0.05 MILE EAST OF GEORGIA AVENUE.
 JV4296'
 JV4296'THE STATION IS THE CENTER OF A 120 FOOT HIGH WATER TANK, NOT
 JV4296'ELEVATED.
 JV4296'
 JV4296'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION GLENMONT
 JV4296'1943 RM 3, THE DISTANCE BEING 56.96 FEET, 17.361 METERS WEST OF
 JV4296'STATION GLENMONT 1943 RM 3.
 JV4296'
 JV4296'THE CENTER OF THE TOP OF THE VENTILATOR CAP WAS ALSO INTERSECTED.
 JV4296
 JV4296                          STATION RECOVERY (1995)
 JV4296
 JV4296'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV4296'RECOVERED IN GOOD CONDITION.
 JV4296
 JV4296                          STATION RECOVERY (2001)
 JV4296
 JV4296'RECOVERY NOTE BY US POWER SQUADRON 2001 (BAS)
 JV4296'LOCATION DESCRIPTION NEEDS TO BE REWRITTEN.  THE AREA HAS CHANGED
 JV4296'GREATLY SINCE ORIGINAL DESCRIPTION WRITTEN.
 JV4296
 JV4296                          STATION RECOVERY (2003)
 JV4296
 JV4296'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 JV4296'RECOVERED IN GOOD CONDITION.
 JV4296
 JV4296                          STATION RECOVERY (2005)
 JV4296
 JV4296'RECOVERY NOTE BY US POWER SQUADRON 2005 (KLM)
 JV4296'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1132 ***********************************************************************
 HV1132  DESIGNATION -  GLENN
 HV1132  PID         -  HV1132
 HV1132  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1132  COUNTRY     -  US
 HV1132  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1132
 HV1132                         *CURRENT SURVEY CONTROL
 HV1132  ______________________________________________________________________
 HV1132* NAD 83(1991) POSITION- 38 59 41.54424(N) 076 52 57.20258(W)   ADJUSTED
 HV1132* NAVD 88 ORTHO HEIGHT -    56.333 (meters)      184.82  (feet) ADJUSTED
 HV1132  ______________________________________________________________________
 HV1132  GEOID HEIGHT    -        -32.257 (meters)                     GEOID18
 HV1132  LAPLACE CORR    -         -5.04  (seconds)                    DEFLEC18
 HV1132  DYNAMIC HEIGHT  -         56.303 (meters)      184.72  (feet) COMP
 HV1132  MODELED GRAVITY -    980,092.6   (mgal)                       NAVD 88
 HV1132
 HV1132  HORZ ORDER      -  SECOND
 HV1132  VERT ORDER      -  SECOND    CLASS 0
 HV1132
 HV1132.The horizontal coordinates were established by classical geodetic methods
 HV1132.and adjusted by the National Geodetic Survey in January 1992.
 HV1132
 HV1132.The orthometric height was determined by differential leveling and
 HV1132.adjusted by the NATIONAL GEODETIC SURVEY
 HV1132.in June 1991.
 HV1132
 HV1132.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1132.GEOID18 height accuracy estimate available here.
 HV1132
 HV1132.Click photographs - Photos may exist for this station.
 HV1132
 HV1132.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV1132
 HV1132.The dynamic height is computed by dividing the NAVD 88
 HV1132.geopotential number by the normal gravity value computed on the
 HV1132.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1132.degrees latitude (g = 980.6199 gals.).
 HV1132
 HV1132.The modeled gravity was interpolated from observed gravity values.
 HV1132
 HV1132. The following values were computed from the NAD 83(1991) position.
 HV1132
 HV1132;                    North         East     Units Scale Factor Converg.
 HV1132;SPC MD       -   147,443.648   410,173.971   MT  0.99995200   +0 04 25.4
 HV1132;SPC MD       -   483,738.04  1,345,712.44   sFT  0.99995200   +0 04 25.4
 HV1132;UTM  18      - 4,317,893.372   336,968.217   MT  0.99992729   -1 11 05.5
 HV1132
 HV1132!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV1132!SPC MD       -   0.99999622  x   0.99995200  =   0.99994822
 HV1132!UTM  18      -   0.99999622  x   0.99992729  =   0.99992351
 HV1132
 HV1132:                Primary Azimuth Mark                     Grid Az
 HV1132:SPC MD       -  DALE                                     149 52 29.0
 HV1132:UTM  18      -  DALE                                     151 07 59.9
 HV1132
 HV1132_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3696817893(NAD 83)
 HV1132
 HV1132|---------------------------------------------------------------------|
 HV1132| PID    Reference Object                     Distance      Geod. Az  |
 HV1132|                                                           dddmmss.s |
 HV1132| HV1131 DALE                                APPROX. 0.8 KM 1495654.4 |
 HV1132| HV1133 GLENN RM 1                           20.878 METERS 19431     |
 HV1132| HV7677 US HWY MARKER NEAR GLENN            103.437 METERS 23742     |
 HV1132| HV1134 GLENN RM 2                           27.390 METERS 28649     |
 HV1132|---------------------------------------------------------------------|
 HV1132
 HV1132                          SUPERSEDED SURVEY CONTROL
 HV1132
 HV1132  NAD 83(1986)-  38 59 41.54269(N)    076 52 57.21348(W) AD(       ) 2
 HV1132  NAD 27      -  38 59 41.14373(N)    076 52 58.31015(W) AD(       ) 2
 HV1132  NGVD 29              56.57   (m)          185.6    (f) LEVELING    3  
 HV1132  NGVD 29 (11/26/84)   56.568  (m)          185.59   (f) ADJUSTED    2 0
 HV1132
 HV1132.Superseded values are not recommended for survey control.
 HV1132
 HV1132.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1132.See file dsdata.pdf to determine how the superseded data were derived.
 HV1132
 HV1132_MARKER: DS = TRIANGULATION STATION DISK
 HV1132_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1132_STAMPING: GLENN 1958
 HV1132_MARK LOGO: CGS
 HV1132_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1132+STABILITY: SURFACE MOTION
 HV1132
 HV1132  HISTORY     - Date     Condition        Report By
 HV1132  HISTORY     - 1958     MONUMENTED       CGS
 HV1132  HISTORY     - 1958     GOOD             CGS
 HV1132  HISTORY     - 1973     GOOD             NGS
 HV1132  HISTORY     - 19910628 MARK NOT FOUND   USPSQD
 HV1132
 HV1132                          STATION DESCRIPTION
 HV1132
 HV1132'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV1132'STATION IS LOCATED AT THE INTERCHANGE OF THE BALTIMORE-WASHINGTON
 HV1132'PARKWAY AND GLENN DALE ROAD ABOUT 9-1/2 MILES NORTHEAST OF
 HV1132'WASHINGTON D.C. AND ABOUT 2-1/2 MILES EAST OF COLLEGE PARK.
 HV1132'STATION IS 53 FEET EAST OF APPROXIMATE CENTERLINE OF SURFACED ROAD,
 HV1132'21 FEET SOUTH OF EMBANKMENT AND 28 FEET SOUTHEAST OF WEST END
 HV1132'OF EMBANKMENT.  THE MARK IS SET ABOUT 3 INCHES BELOW THE
 HV1132'SURFACE OF GROUND AND THE DISK IS STAMPED GLENN 1958.
 HV1132'
 HV1132'REFERENCE MARK NO. 1 IS 53 FEET EAST OF APPROXIMATE CENTERLINE
 HV1132'OF SURFACED ROAD AND 84 FEET SOUTH-SOUTHEAST OF THE WEST END OF
 HV1132'EMBANKMENT.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED GLENN
 HV1132'NO 1 1958.
 HV1132'
 HV1132'REFERENCE MARK NO. 2 IS 37 FEET WEST OF APPROXIMATE CENTERLINE
 HV1132'OF SURFACED ROAD AND 66-1/2 FEET SOUTHWEST OF WEST END OF
 HV1132'BALTIMORE-WASHINGTON PARKWAY SIGN.  THE MARK IS SET FLUSH AND
 HV1132'THE DISK IS STAMPED GLENN NO 2 1958.
 HV1132'
 HV1132'U.S. RIGHT-OF-WAY MARK IS 17-1/2 FEET WEST-NORTHWEST OF
 HV1132'APPROXIMATE CENTERLINE OF ROAD, 12 FEET NORTH-NORTHEAST OF
 HV1132'APPROXIMATE CENTERLINE OF DRIVEWAY AND 2 FEET WEST OF WITNESS
 HV1132'POST.  THE MARK IS A BRONZE DISK SET IN A 6X6 INCH CONCRETE POST,
 HV1132'PROJECTS ABOUT 4 INCHES AND THERE IS NO STAMPING ON THE DISK.
 HV1132'
 HV1132'TRAVERSE STATION DALE (AZIMUTH MARK) IS 43 FEET WEST OF APPROXIMATE
 HV1132'CENTERLINE OF GRAVEL ROAD, 87 FEET NORTH OF APPROXIMATE CENTERLINE
 HV1132'OF ROAD AND 2-1/2 FEET NORTH-NORTHWEST OF WITNESS POST.  THE MARK
 HV1132'IS A STANDARD TRAVERSE DISK SET IN A 12X12 INCH MONUMENT, PROJECTS
 HV1132'ABOUT 2 INCHES AND THE DISK IS STAMPED DALE 1958.
 HV1132'
 HV1132'A TRAVERSE CONNECTION WAS MADE FROM STATION GLENN TO
 HV1132'U.S. RIGHT-OF-WAY MARK AND THE DISTANCE IS SHOWN BELOW.
 HV1132'
 HV1132'TO REACH FROM THE RAILROAD DEPOT IN BELTSVILLE, GO SOUTHWESTERLY
 HV1132'AND SOUTHERLY ON U.S. HIGHWAY NO. 1 FOR 3.0 MILES TO TRAFFIC LIGHT
 HV1132'AT JUNCTION OF U.S. HIGHWAY NO. 1 AND STATE HIGHWAY NO. 430.  TURN
 HV1132'LEFT AND GO EASTERLY ON STATE HIGHWAY NO. 430 FOR 1.65 MILE TO
 HV1132'INTERSECTION OF NEW DUAL HIGHWAY.  CROSS NEW DUAL HIGHWAY AND
 HV1132'CONTINUE EASTERLY ON GLENN DALE ROAD FOR 1.0 MILE TO RIGHT TURN
 HV1132'TO BALTIMORE-WASHINGTON PARKWAY AND STATION IN TRIANGLE FORMED BY
 HV1132'PARK WAY AND SURFACED ROAD AS DESCRIBED.  CONTINUE EASTERLY ON
 HV1132'GLENN DALE ROAD FOR 0.1 MILE TO GRAVEL ROAD RIGHT.  TURN RIGHT AND
 HV1132'GO SOUTHERLY FOR 0.15 MILE TO SIDE ROAD LEFT.  TURN LEFT AND GO
 HV1132'EASTERLY ON SURFACED AND GRAVEL ROAD FOR 0.45 TO SIDE ROAD
 HV1132'LEFT AND STATION DALE (AZIMUTH MARK) ON LEFT (NORTH) SIDE OF
 HV1132'ROAD AS DESCRIBED.
 HV1132'
 HV1132'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 HV1132
 HV1132                          STATION RECOVERY (1958)
 HV1132
 HV1132'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 HV1132'1 MI E FROM GREENBELT.
 HV1132'ABOUT 1.0 MILE EAST ALONG GREENBELT AVENUE FROM THE INTERSECTION
 HV1132'OF KENILWORTH AVENUE AT GREENBELT, ALONG THE BALTIMORE-WASHINGTON
 HV1132'PARKWAY, 102 YARDS WEST OF THE WEST CORNER OF A LARGE BRIDGE OVER
 HV1132'THE PARKWAY, 45 FEET EAST OF THE CENTER LINE OF A CONNECTING
 HV1132'ROAD, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 HV1132
 HV1132                          STATION RECOVERY (1973)
 HV1132
 HV1132'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973
 HV1132'RECOVERED IN GOOD CONDITION.
 HV1132
 HV1132                          STATION RECOVERY (1991)
 HV1132
 HV1132'RECOVERY NOTE BY US POWER SQUADRON 1991 (WAY)
 HV1132'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7466 ***********************************************************************
 HV7466  DESIGNATION -  GLENN DALE SANITORIUM STACK
 HV7466  PID         -  HV7466
 HV7466  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7466  COUNTRY     -  US
 HV7466  USGS QUAD   -  LANHAM (2016)
 HV7466
 HV7466                         *CURRENT SURVEY CONTROL
 HV7466  ______________________________________________________________________
 HV7466* NAD 83(1991) POSITION- 38 57 50.08741(N) 076 48 34.60491(W)   ADJUSTED
 HV7466  ______________________________________________________________________
 HV7466  GEOID HEIGHT    -        -32.496 (meters)                     GEOID18
 HV7466  LAPLACE CORR    -         -5.36  (seconds)                    DEFLEC18
 HV7466  HORZ ORDER      -  THIRD
 HV7466
 HV7466.The horizontal coordinates were established by classical geodetic methods
 HV7466.and adjusted by the National Geodetic Survey in January 1992.
 HV7466
 HV7466.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7466.GEOID18 height accuracy estimate available here.
 HV7466
 HV7466.Click photographs - Photos may exist for this station.
 HV7466
 HV7466.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7466
 HV7466. The following values were computed from the NAD 83(1991) position.
 HV7466
 HV7466;                    North         East     Units Scale Factor Converg.
 HV7466;SPC MD       -   144,017.424   416,500.141   MT  0.99995103   +0 07 10.2
 HV7466;SPC MD       -   472,497.17  1,366,467.55   sFT  0.99995103   +0 07 10.2
 HV7466;UTM  18      - 4,314,329.203   343,217.405   MT  0.99990268   -1 08 17.4
 HV7466
 HV7466_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4321714329(NAD 83)
 HV7466
 HV7466                          SUPERSEDED SURVEY CONTROL
 HV7466
 HV7466  NAD 83(1986)-  38 57 50.08538(N)    076 48 34.61643(W) AD(       ) 3
 HV7466  NAD 27      -  38 57 49.68668(N)    076 48 35.72320(W) AD(       ) 3
 HV7466
 HV7466.Superseded values are not recommended for survey control.
 HV7466
 HV7466.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7466.See file dsdata.pdf to determine how the superseded data were derived.
 HV7466
 HV7466_MARKER: 63 = STACK
 HV7466
 HV7466  HISTORY     - Date     Condition        Report By
 HV7466  HISTORY     - 1942     FIRST OBSERVED   CGS
 HV7466  HISTORY     - 1962     GOOD             CGS
 HV7466
 HV7466                          STATION DESCRIPTION
 HV7466
 HV7466'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV7466'THIS INTERSECTION STATION IS THE STACK AT THE HEATING PLANT OF
 HV7466'THE GLENN DALE SANATORIUM WHICH IS LOCATED ABOUT 2.5 MILES S OF
 HV7466'THE TOWN OF GLENN DALE.  IT IS A RED BRICK STRUCTURE ABOUT 100
 HV7466'FEET HIGH.  THE CENTER OF THE TOP WAS THE POINT OBSERVED UPON.
 HV7466
 HV7466                          STATION RECOVERY (1962)
 HV7466
 HV7466'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HV7466'THE STATION WAS RECOVERED AS DESCRIBED AND FOUND IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7467 ***********************************************************************
 HV7467  DESIGNATION -  GLENN DALE SANITORIUM TANK
 HV7467  PID         -  HV7467
 HV7467  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7467  COUNTRY     -  US
 HV7467  USGS QUAD   -  LANHAM (2016)
 HV7467
 HV7467                         *CURRENT SURVEY CONTROL
 HV7467  ______________________________________________________________________
 HV7467* NAD 83(1993) POSITION- 38 57 49.98873(N) 076 48 32.18950(W)   ADJUSTED
 HV7467  ______________________________________________________________________
 HV7467  GEOID HEIGHT    -        -32.498 (meters)                     GEOID18
 HV7467  LAPLACE CORR    -         -5.35  (seconds)                    DEFLEC18
 HV7467  HORZ ORDER      -  THIRD
 HV7467
 HV7467.The horizontal coordinates were established by classical geodetic methods
 HV7467.and adjusted by the National Geodetic Survey in November 1994.
 HV7467
 HV7467.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7467.GEOID18 height accuracy estimate available here.
 HV7467
 HV7467.Click photographs - Photos may exist for this station.
 HV7467
 HV7467.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7467
 HV7467. The following values were computed from the NAD 83(1993) position.
 HV7467
 HV7467;                    North         East     Units Scale Factor Converg.
 HV7467;SPC MD       -   144,014.502   416,558.296   MT  0.99995103   +0 07 11.7
 HV7467;SPC MD       -   472,487.58  1,366,658.34   sFT  0.99995103   +0 07 11.7
 HV7467;UTM  18      - 4,314,325.006   343,275.479   MT  0.99990246   -1 08 15.9
 HV7467
 HV7467_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4327514325(NAD 83)
 HV7467
 HV7467                          SUPERSEDED SURVEY CONTROL
 HV7467
 HV7467  NAD 83(1991)-  38 57 49.98898(N)    076 48 32.18994(W) AD(       ) 3
 HV7467  NAD 83(1986)-  38 57 49.98691(N)    076 48 32.20141(W) AD(       ) 3
 HV7467  NAD 27      -  38 57 49.58896(N)    076 48 33.30860(W) AD(       ) 3
 HV7467
 HV7467.Superseded values are not recommended for survey control.
 HV7467
 HV7467.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7467.See file dsdata.pdf to determine how the superseded data were derived.
 HV7467
 HV7467_MARKER: 53 = ELEVATED TANK
 HV7467
 HV7467  HISTORY     - Date     Condition        Report By
 HV7467  HISTORY     - 1942     FIRST OBSERVED   CGS
 HV7467  HISTORY     - 1970     GOOD             NGS
 HV7467
 HV7467                          STATION DESCRIPTION
 HV7467
 HV7467'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV7467'THIS INTERSECTION STATION IS THE TANK AT THE GLENN DALE
 HV7467'SANATORIUM WHICH IS LOCATED ABOUT 2.5 MILES S OF THE TOWN OF
 HV7467'GLENN DALE.  IT IS A GREY STEEL BOWL SUPPORTED ATOP A FOUR-LEGGED
 HV7467'STEEL STRUCTURE, AN OVERALL HEIGHT OF ABOUT 125 FEET.  THE BALL
 HV7467'AT THE APEX OF THE ROOF WAS THE POINT OBSERVED UPON.
 HV7467
 HV7467                          STATION RECOVERY (1970)
 HV7467
 HV7467'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7467'STATION IS THE GLENN DALE SANATORIUM TANK.  THE POINT OBSERVED
 HV7467'WAS THE CENTER OF THE BALL ON THE TOP OF THE TANK.  THE TANK
 HV7467'IS GREEN IN COLOR, SUPPORTED BY FOUR LEGS AND IS 207 FEET
 HV7467'HIGH.  IT WAS PREVIOUSLY CALLED 125 FEET TALL.
 HV7467'
 HV7467'THE TANK IS LOCATED AT THE GLENN DALE SANATORIUM WHICH IS ON
 HV7467'GLENN DALE ROAD, 2.5 MILES SOUTH OF THE TOWN OF GLENN DALE.  IT
 HV7467'IS ACROSS THE STREET FROM THE LAUNDRY AND POWER PLANT BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7465 ***********************************************************************
 HV7465  DESIGNATION -  GLENN DALE WSSC TANK
 HV7465  PID         -  HV7465
 HV7465  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7465  COUNTRY     -  US
 HV7465  USGS QUAD   -  LANHAM (2016)
 HV7465
 HV7465                         *CURRENT SURVEY CONTROL
 HV7465  ______________________________________________________________________
 HV7465* NAD 83(1991) POSITION- 38 57 28.16439(N) 076 48 43.78695(W)   ADJUSTED
 HV7465  ______________________________________________________________________
 HV7465  GEOID HEIGHT    -        -32.497 (meters)                     GEOID18
 HV7465  LAPLACE CORR    -         -5.36  (seconds)                    DEFLEC18
 HV7465  HORZ ORDER      -  THIRD
 HV7465
 HV7465.The horizontal coordinates were established by classical geodetic methods
 HV7465.and adjusted by the National Geodetic Survey in January 1992.
 HV7465
 HV7465.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7465.GEOID18 height accuracy estimate available here.
 HV7465
 HV7465.Click photographs - Photos may exist for this station.
 HV7465
 HV7465.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7465
 HV7465. The following values were computed from the NAD 83(1991) position.
 HV7465
 HV7465;                    North         East     Units Scale Factor Converg.
 HV7465;SPC MD       -   143,340.951   416,280.485   MT  0.99995087   +0 07 04.4
 HV7465;SPC MD       -   470,277.77  1,365,746.89   sFT  0.99995087   +0 07 04.4
 HV7465;UTM  18      - 4,313,657.746   342,982.966   MT  0.99990359   -1 08 22.7
 HV7465
 HV7465_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4298213657(NAD 83)
 HV7465
 HV7465                          SUPERSEDED SURVEY CONTROL
 HV7465
 HV7465  NAD 83(1986)-  38 57 28.16247(N)    076 48 43.79824(W) AD(       ) 3
 HV7465  NAD 27      -  38 57 27.76362(N)    076 48 44.90557(W) AD(       ) 3
 HV7465
 HV7465.Superseded values are not recommended for survey control.
 HV7465
 HV7465.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7465.See file dsdata.pdf to determine how the superseded data were derived.
 HV7465
 HV7465_MARKER: 53 = ELEVATED TANK
 HV7465
 HV7465  HISTORY     - Date     Condition        Report By
 HV7465  HISTORY     - 1970     FIRST OBSERVED   WSSC
 HV7465
 HV7465                          STATION DESCRIPTION
 HV7465
 HV7465'DESCRIBED BY WASH SUBURB SAN COMM 1970 (JBJ)
 HV7465'STATION IS THE GLENN DALE WASHINGTON SUBURBAN SANITARY COMMISSION
 HV7465'TANK.  THE POINT OBSERVED WAS THE CENTER OF THE TOP OF THE
 HV7465'TANK.  THE STATION IS A GREEN CYLINDRICAL TANK APPROXIMATELY 100
 HV7465'FEET HIGH.
 HV7465'
 HV7465'THE TANK IS LOCATED IN THE NORTHEAST QUADRANT OF THE
 HV7465'INTERSECTION OF MARYLAND ROUTE 450 (OLD ANNAPOLIS ROAD) AND GLENN
 HV7465'DALE ROAD.  IT IS ON THE GROUNDS OF THE GLENN DALE HOSPITAL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1133 ***********************************************************************
 HV1133  DESIGNATION -  GLENN RM 1
 HV1133  PID         -  HV1133
 HV1133  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1133  COUNTRY     -  US
 HV1133  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1133
 HV1133                         *CURRENT SURVEY CONTROL
 HV1133  ______________________________________________________________________
 HV1133* NAD 83(1986) POSITION- 38 59 40.89   (N) 076 52 57.42   (W)   HD_HELD1
 HV1133* NAVD 88 ORTHO HEIGHT -    55.274 (meters)      181.34  (feet) ADJUSTED
 HV1133  ______________________________________________________________________
 HV1133  GEOID HEIGHT    -        -32.257 (meters)                     GEOID18
 HV1133  DYNAMIC HEIGHT  -         55.245 (meters)      181.25  (feet) COMP
 HV1133  MODELED GRAVITY -    980,092.6   (mgal)                       NAVD 88
 HV1133
 HV1133  VERT ORDER      -  SECOND    CLASS 0
 HV1133
 HV1133.The horizontal coordinates were determined by differentially corrected
 HV1133.hand held GPS observations or other comparable positioning techniques
 HV1133.and have an estimated accuracy of +/- 3 meters.
 HV1133
 HV1133.The orthometric height was determined by differential leveling and
 HV1133.adjusted by the NATIONAL GEODETIC SURVEY
 HV1133.in June 1991.
 HV1133
 HV1133.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1133.GEOID18 height accuracy estimate available here.
 HV1133
 HV1133.Click photographs - Photos may exist for this station.
 HV1133
 HV1133.The dynamic height is computed by dividing the NAVD 88
 HV1133.geopotential number by the normal gravity value computed on the
 HV1133.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1133.degrees latitude (g = 980.6199 gals.).
 HV1133
 HV1133.The modeled gravity was interpolated from observed gravity values.
 HV1133
 HV1133;                    North         East    Units  Estimated Accuracy
 HV1133;SPC MD       -   147,423.5     410,168.8     MT  (+/- 3 meters HH1 GPS) 
 HV1133
 HV1133_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3696217873(NAD 83)
 HV1133
 HV1133                          SUPERSEDED SURVEY CONTROL
 HV1133
 HV1133  NGVD 29 (11/26/84)   55.508  (m)          182.11   (f) ADJUSTED    2 0
 HV1133
 HV1133.Superseded values are not recommended for survey control.
 HV1133
 HV1133.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1133.See file dsdata.pdf to determine how the superseded data were derived.
 HV1133
 HV1133_MARKER: DR = REFERENCE MARK DISK
 HV1133_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1133_STAMPING: GLENN NO 1 1958
 HV1133_MARK LOGO: CGS
 HV1133_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1133+STABILITY: SURFACE MOTION
 HV1133
 HV1133  HISTORY     - Date     Condition        Report By
 HV1133  HISTORY     - 1958     MONUMENTED       CGS
 HV1133  HISTORY     - 1973     GOOD             NGS
 HV1133
 HV1133                          STATION DESCRIPTION
 HV1133
 HV1133'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1133'1 MI E FROM GREENBELT.
 HV1133'ABOUT 1.0 MILE EAST ALONG GREENBELT AVENUE FROM THE CROSSING
 HV1133'OF KENILWORTH AVENUE AT GREENBELT, ALONG THE BALTIMORE-WASHINGTON
 HV1133'PARKWAY, 58.6 FEET SOUTH-SOUTHWEST OF THE STATION, 35 FEET
 HV1133'EAST OF THE CENTER LINE OF A CONNECTING ROAD, SET IN THE TOP OF
 HV1133'A CONCRETE POST FLUSH WITH THE GROUND.
 HV1133
 HV1133                          STATION RECOVERY (1973)
 HV1133
 HV1133'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973
 HV1133'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1134 ***********************************************************************
 HV1134  DESIGNATION -  GLENN RM 2
 HV1134  PID         -  HV1134
 HV1134  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1134  COUNTRY     -  US
 HV1134  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1134
 HV1134                         *CURRENT SURVEY CONTROL
 HV1134  ______________________________________________________________________
 HV1134* NAD 83(1986) POSITION- 38 59 41.80   (N) 076 52 58.29   (W)   HD_HELD1
 HV1134* NAVD 88 ORTHO HEIGHT -    57.468 (meters)      188.54  (feet) ADJUSTED
 HV1134  ______________________________________________________________________
 HV1134  GEOID HEIGHT    -        -32.256 (meters)                     GEOID18
 HV1134  DYNAMIC HEIGHT  -         57.437 (meters)      188.44  (feet) COMP
 HV1134  MODELED GRAVITY -    980,092.6   (mgal)                       NAVD 88
 HV1134
 HV1134  VERT ORDER      -  SECOND    CLASS 0
 HV1134
 HV1134.The horizontal coordinates were determined by differentially corrected
 HV1134.hand held GPS observations or other comparable positioning techniques
 HV1134.and have an estimated accuracy of +/- 3 meters.
 HV1134
 HV1134.The orthometric height was determined by differential leveling and
 HV1134.adjusted by the NATIONAL GEODETIC SURVEY
 HV1134.in June 1991.
 HV1134
 HV1134.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1134.GEOID18 height accuracy estimate available here.
 HV1134
 HV1134.Click photographs - Photos may exist for this station.
 HV1134
 HV1134.The dynamic height is computed by dividing the NAVD 88
 HV1134.geopotential number by the normal gravity value computed on the
 HV1134.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1134.degrees latitude (g = 980.6199 gals.).
 HV1134
 HV1134.The modeled gravity was interpolated from observed gravity values.
 HV1134
 HV1134;                    North         East    Units  Estimated Accuracy
 HV1134;SPC MD       -   147,451.5     410,147.8     MT  (+/- 3 meters HH1 GPS) 
 HV1134
 HV1134_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3694217901(NAD 83)
 HV1134
 HV1134                          SUPERSEDED SURVEY CONTROL
 HV1134
 HV1134  NGVD 29 (11/26/84)   57.702  (m)          189.31   (f) ADJUSTED    2 0
 HV1134
 HV1134.Superseded values are not recommended for survey control.
 HV1134
 HV1134.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1134.See file dsdata.pdf to determine how the superseded data were derived.
 HV1134
 HV1134_MARKER: DR = REFERENCE MARK DISK
 HV1134_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1134_STAMPING: GLENN NO 2 1958
 HV1134_MARK LOGO: CGS
 HV1134_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1134+STABILITY: SURFACE MOTION
 HV1134
 HV1134  HISTORY     - Date     Condition        Report By
 HV1134  HISTORY     - 1958     MONUMENTED       CGS
 HV1134  HISTORY     - 1973     GOOD             NGS
 HV1134
 HV1134                          STATION DESCRIPTION
 HV1134
 HV1134'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 HV1134'1 MI E FROM GREENBELT.
 HV1134'ABOUT 1.0 MILE EAST ALONG THE GREENBELT AVENUE FROM THE
 HV1134'INTERSECTION OF KENILWORTH AVENUE AT GREENBELT, ALONG THE
 HV1134'BALTIMORE-WASHINGTON PARKWAY, 90.0 FEET WEST OF THE STATION,
 HV1134'45 FEET WEST OF THE CENTER LINE OF A CONNECTING ROAD, SET IN
 HV1134'THE TOP OF A CONCRETE POST PROJECTING 2 INCHES ABOVE THE
 HV1134'GROUND.  MARK IS ALSO 1 1/2 FEET EAST OF A METAL WITNESS POST.
 HV1134
 HV1134                          STATION RECOVERY (1973)
 HV1134
 HV1134'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973
 HV1134'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6762 ***********************************************************************
 JV6762  DESIGNATION -  GLENVILLE
 JV6762  PID         -  JV6762
 JV6762  STATE/COUNTY-  MD/HARFORD
 JV6762  COUNTRY     -  US
 JV6762  USGS QUAD   -  ABERDEEN (2016)
 JV6762
 JV6762                         *CURRENT SURVEY CONTROL
 JV6762  ______________________________________________________________________
 JV6762* NAD 83(2011) POSITION- 39 36 34.93259(N) 076 12 44.27221(W)   ADJUSTED
 JV6762* NAD 83(2011) ELLIP HT-    35.319 (meters)        (06/27/12)   ADJUSTED
 JV6762* NAD 83(2011) EPOCH   -  2010.00
 JV6762* NAVD 88 ORTHO HEIGHT -    68.2   (meters)      224.    (feet) VERTCON3
 JV6762  ______________________________________________________________________
 JV6762  GEOID HEIGHT    -        -32.886 (meters)                     GEOID18
 JV6762  NAD 83(2011) X  -  1,172,672.661 (meters)                     COMP
 JV6762  NAD 83(2011) Y  - -4,778,695.416 (meters)                     COMP
 JV6762  NAD 83(2011) Z  -  4,044,716.964 (meters)                     COMP
 JV6762  LAPLACE CORR    -         -2.77  (seconds)                    DEFLEC18
 JV6762
 JV6762  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6762  Standards:
 JV6762         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6762            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6762  -------------------------------------------------------------------
 JV6762  NETWORK    1.39   3.67           0.59   0.51   1.87      0.41598758
 JV6762  -------------------------------------------------------------------
 JV6762  Click here for local accuracies and other accuracy information.
 JV6762
 JV6762.The horizontal coordinates were established by GPS observations
 JV6762.and adjusted by the National Geodetic Survey in June 2012.
 JV6762
 JV6762.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6762.been affixed to the stable North American tectonic plate. See 
 JV6762.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6762
 JV6762.The horizontal coordinates are valid at the epoch date displayed above
 JV6762.which is a decimal equivalence of Year/Month/Day.
 JV6762
 JV6762.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6762.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6762
 JV6762.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6762.GEOID18 height accuracy estimate available here.
 JV6762
 JV6762.Click photographs - Photos may exist for this station.
 JV6762
 JV6762.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6762
 JV6762.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6762
 JV6762.The ellipsoidal height was determined by GPS observations
 JV6762.and is referenced to NAD 83.
 JV6762
 JV6762. The following values were computed from the NAD 83(2011) position.
 JV6762
 JV6762;                    North         East     Units Scale Factor Converg.
 JV6762;SPC MD       -   215,986.964   467,647.636   MT  1.00003184   +0 29 39.8
 JV6762;SPC MD       -   708,617.23  1,534,273.95   sFT  1.00003184   +0 29 39.8
 JV6762;UTM  18      - 4,385,141.581   395,930.406   MT  0.99973334   -0 46 22.7
 JV6762
 JV6762!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6762!SPC MD       -   0.99999446  x   1.00003184  =   1.00002630
 JV6762!UTM  18      -   0.99999446  x   0.99973334  =   0.99972780
 JV6762
 JV6762_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9593085141(NAD 83)
 JV6762
 JV6762                          SUPERSEDED SURVEY CONTROL
 JV6762
 JV6762  NAD 83(2007)-  39 36 34.93267(N)    076 12 44.27293(W) AD(2002.00) 0
 JV6762  ELLIP H (02/10/07)   35.339  (m)                       GP(2002.00)    
 JV6762  ELLIP H (09/18/02)   35.358  (m)                       GP(       ) 4 2
 JV6762  NAD 83(1991)-  39 36 34.93235(N)    076 12 44.27322(W) AD(       ) 1
 JV6762  ELLIP H (01/27/92)   35.348  (m)                       GP(       ) 4 1
 JV6762  NAD 83(1986)-  39 36 34.92558(N)    076 12 44.27949(W) AD(       ) 1
 JV6762  NGVD 29 (06/18/91)   68.5    (m)  UNKNOWN  model used  GPS OBS        
 JV6762
 JV6762.Superseded values are not recommended for survey control.
 JV6762
 JV6762.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6762.See file dsdata.pdf to determine how the superseded data were derived.
 JV6762
 JV6762_MARKER: DD = SURVEY DISK
 JV6762_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6762_STAMPING: 73 GLENVILLE 1989
 JV6762_MARK LOGO: MD-025
 JV6762_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6762_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6762+STABILITY: SURFACE MOTION
 JV6762_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6762+SATELLITE: SATELLITE OBSERVATIONS - February 18, 2013
 JV6762
 JV6762  HISTORY     - Date     Condition        Report By
 JV6762  HISTORY     - 1989     MONUMENTED       RDA
 JV6762  HISTORY     - 20010421 GOOD             USPSQD
 JV6762  HISTORY     - 20130218 GOOD             GPSSS
 JV6762
 JV6762                          STATION DESCRIPTION
 JV6762
 JV6762'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6762'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND
 JV6762'ABOUT2 MILES SOUTH OF THE VILLAGE OF DARLINGTON.
 JV6762'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 161 AND
 JV6762'STATE HIGHWAY 155 PROCEED NORTH ALONG HIGHWAY 161 2.16 MILES TO ITS
 JV6762'INTERSECTION WITH HARMONY CHURCH ROAD.  TURN LEFT AND PROCEED WEST
 JV6762'ALONG HARMONY CHURCH ROAD 0.76 MILES TO THE STATION ON THE LEFT.
 JV6762'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6762'ABOUT 1 INCH BELOW GROUND STAMPED 73 GLENVILLE 1989.  THE STATION IS
 JV6762'43.0 FEET SOUTHWEST OF THE CENTERLINE OF HARMONY CHURCH ROAD, 21.6
 JV6762'FEET SOUTHEAST OF A 4 INCH TWIN TRUNK DOGWOOD TREE, 15.5 FEET WEST OF
 JV6762'A 4 INCH APPLE TREE.
 JV6762
 JV6762                          STATION RECOVERY (2001)
 JV6762
 JV6762'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV6762'RECOVERED IN GOOD CONDITION.
 JV6762
 JV6762                          STATION RECOVERY (2013)
 JV6762
 JV6762'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 JV6762'RECOVERED BY MIKE BUTLER, DEWEY LILLY AND MIKE ESTES OF NORTHERN BAY
 JV6762'LAND PLANNING, ENGINEERING AND SURVEYING CORP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS2087 ***********************************************************************
 DS2087  DESIGNATION -  GLENVILLE 354
 DS2087  PID         -  DS2087
 DS2087  STATE/COUNTY-  MD/HARFORD
 DS2087  COUNTRY     -  US
 DS2087  USGS QUAD   -  ABERDEEN (2016)
 DS2087
 DS2087                         *CURRENT SURVEY CONTROL
 DS2087  ______________________________________________________________________
 DS2087* NAD 83(1986) POSITION- 39 33 33.26   (N) 076 14 45.71   (W)   HD_HELD1
 DS2087* NAVD 88 ORTHO HEIGHT -   126.496 (meters)      415.01  (feet) ADJUSTED
 DS2087  ______________________________________________________________________
 DS2087  GEOID HEIGHT    -        -32.898 (meters)                     GEOID18
 DS2087  DYNAMIC HEIGHT  -        126.433 (meters)      414.81  (feet) COMP
 DS2087  MODELED GRAVITY -    980,127.6   (mgal)                       NAVD 88
 DS2087
 DS2087  VERT ORDER      -  FIRST     CLASS II
 DS2087
 DS2087.The horizontal coordinates were determined by differentially corrected
 DS2087.hand held GPS observations or other comparable positioning techniques
 DS2087.and have an estimated accuracy of +/- 3 meters.
 DS2087
 DS2087.The orthometric height was determined by differential leveling and
 DS2087.adjusted by the NATIONAL GEODETIC SURVEY
 DS2087.in September 2024.
 DS2087
 DS2087.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS2087.GEOID18 height accuracy estimate available here.
 DS2087
 DS2087.Click photographs - Photos may exist for this station.
 DS2087
 DS2087.The dynamic height is computed by dividing the NAVD 88
 DS2087.geopotential number by the normal gravity value computed on the
 DS2087.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DS2087.degrees latitude (g = 980.6199 gals.).
 DS2087
 DS2087.The modeled gravity was interpolated from observed gravity values.
 DS2087
 DS2087;                    North         East    Units  Estimated Accuracy
 DS2087;SPC MD       -   210,359.6     464,797.0     MT  (+/- 3 meters HH1 GPS) 
 DS2087
 DS2087_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9295679580(NAD 83)
 DS2087
 DS2087                          SUPERSEDED SURVEY CONTROL
 DS2087
 DS2087.No superseded survey control is available for this station.
 DS2087
 DS2087_MARKER: DD = SURVEY DISK
 DS2087_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS2087_STAMPING: GLENVILLE 354
 DS2087_MARK LOGO: MD-025
 DS2087_PROJECTION: RECESSED 7 CENTIMETERS
 DS2087_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS2087_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS2087+SATELLITE: SATELLITE OBSERVATIONS - January 02, 2024
 DS2087
 DS2087  HISTORY     - Date     Condition        Report By
 DS2087  HISTORY     - 19680310 MONUMENTED       MD-025
 DS2087  HISTORY     - 20231214 GOOD             MDSHA
 DS2087  HISTORY     - 20240102 GOOD             MDSHA
 DS2087
 DS2087                          STATION DESCRIPTION
 DS2087
 DS2087'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DS2087'THE MARK IS LOCATED ABOUT 6.6 MI (10.6 KM) NORTH-NORTHWEST OF
 DS2087'PERRYMAN, 5.7 MI (9.2 KM) EAST-NORTHEAST OF BEL AIR AND 5.5 MI (8.8
 DS2087'KM) NORTHWEST OF ABERDEEN.
 DS2087'
 DS2087'TO REACH THE MARK FROM THE INTERSECTION OF MD 22 (CHURCHVILLE ROAD)
 DS2087'AND MD 155 (LEVEL ROAD)PROCEED SOUTH EAST ON MD 22 FOR 0.29 KM (0.18
 DS2087'MI) TO THE INTERSECTION WITH GLENVILLE ROAD.  TURN LEFT ON GLENVILLE
 DS2087'ROAD AND PROCEED FOR 0.02 KM (0.01 MI) TO THE MARK ON THE LEFT, SET IN
 DS2087'THE TOP OF A 4-IN (10 CM) SQUARE CONCRETE POST AND ABOUT LEVEL WITH
 DS2087'THE ROAD.
 DS2087'
 DS2087'THE MARK IS 64.0 FT (19.5 M) SOUTHEAST OF A UTILITY POLE NUMBERED BGE
 DS2087'51217, 32.3 FT (9.8 M) NORTHWEST OF A UTILITY POLE NUMBERED BGE 51218,
 DS2087'31.7 FT (9.7 M) NORTHEAST OF THE NORTH EAST END OF A CONCRETE
 DS2087'HEADWALL, 17.2 FT (5.2 M) NORTHWEST OF THE CENTERLINE OF GLENVILLE
 DS2087'ROAD AND 16.9 FT (5.2 M) SOUTHWEST OF A UTILITY POLE NUMBERED CONCRETE
 DS2087'POST C P B C 1.
 DS2087
 DS2087                          STATION RECOVERY (2024)
 DS2087
 DS2087'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2024 (EBD)
 DS2087'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6763 ***********************************************************************
 JV6763  DESIGNATION -  GLENVILLE AZ MK
 JV6763  PID         -  JV6763
 JV6763  STATE/COUNTY-  MD/HARFORD
 JV6763  COUNTRY     -  US
 JV6763  USGS QUAD   -  CONOWINGO DAM (2016)
 JV6763
 JV6763                         *CURRENT SURVEY CONTROL
 JV6763  ______________________________________________________________________
 JV6763* NAD 83(2011) POSITION- 39 37 37.60430(N) 076 12 02.53132(W)   ADJUSTED
 JV6763* NAD 83(2011) ELLIP HT-    47.015 (meters)        (06/27/12)   ADJUSTED
 JV6763* NAD 83(2011) EPOCH   -  2010.00
 JV6763* NAVD 88 ORTHO HEIGHT -    79.9   (meters)      262.    (feet) VERTCON3
 JV6763  ______________________________________________________________________
 JV6763  GEOID HEIGHT    -        -32.884 (meters)                     GEOID18
 JV6763  NAD 83(2011) X  -  1,173,347.844 (meters)                     COMP
 JV6763  NAD 83(2011) Y  - -4,777,269.800 (meters)                     COMP
 JV6763  NAD 83(2011) Z  -  4,046,213.325 (meters)                     COMP
 JV6763  LAPLACE CORR    -         -2.77  (seconds)                    DEFLEC18
 JV6763
 JV6763  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6763  Standards:
 JV6763         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6763            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6763  -------------------------------------------------------------------
 JV6763  NETWORK    2.25   6.13           0.98   0.84   3.13      0.16227426
 JV6763  -------------------------------------------------------------------
 JV6763  Click here for local accuracies and other accuracy information.
 JV6763
 JV6763.The horizontal coordinates were established by GPS observations
 JV6763.and adjusted by the National Geodetic Survey in June 2012.
 JV6763
 JV6763.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6763.been affixed to the stable North American tectonic plate. See 
 JV6763.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6763
 JV6763.The horizontal coordinates are valid at the epoch date displayed above
 JV6763.which is a decimal equivalence of Year/Month/Day.
 JV6763
 JV6763.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6763.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6763
 JV6763.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6763.GEOID18 height accuracy estimate available here.
 JV6763
 JV6763.Click photographs - Photos may exist for this station.
 JV6763
 JV6763.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6763
 JV6763.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6763
 JV6763.The ellipsoidal height was determined by GPS observations
 JV6763.and is referenced to NAD 83.
 JV6763
 JV6763. The following values were computed from the NAD 83(2011) position.
 JV6763
 JV6763;                    North         East     Units Scale Factor Converg.
 JV6763;SPC MD       -   217,928.464   468,626.436   MT  1.00003579   +0 30 06.0
 JV6763;SPC MD       -   714,986.97  1,537,485.23   sFT  1.00003579   +0 30 06.0
 JV6763;UTM  18      - 4,387,060.376   396,951.603   MT  0.99973074   -0 45 57.1
 JV6763
 JV6763!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6763!SPC MD       -   0.99999262  x   1.00003579  =   1.00002841
 JV6763!UTM  18      -   0.99999262  x   0.99973074  =   0.99972337
 JV6763
 JV6763_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9695187060(NAD 83)
 JV6763
 JV6763                          SUPERSEDED SURVEY CONTROL
 JV6763
 JV6763  NAD 83(2007)-  39 37 37.60436(N)    076 12 02.53212(W) AD(2002.00) 0
 JV6763  ELLIP H (02/10/07)   47.031  (m)                       GP(2002.00)    
 JV6763  ELLIP H (09/18/02)   47.030  (m)                       GP(       ) 4 2
 JV6763  NAD 83(1991)-  39 37 37.60461(N)    076 12 02.53236(W) AD(       ) 1
 JV6763  ELLIP H (01/27/92)   47.022  (m)                       GP(       ) 4 1
 JV6763  NAD 83(1986)-  39 37 37.59786(N)    076 12 02.53860(W) AD(       ) 1
 JV6763  NGVD 29 (06/18/91)   80.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6763
 JV6763.Superseded values are not recommended for survey control.
 JV6763
 JV6763.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6763.See file dsdata.pdf to determine how the superseded data were derived.
 JV6763
 JV6763_MARKER: DZ = AZIMUTH MARK DISK
 JV6763_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6763_STAMPING: 73 GLENVILLE 1989
 JV6763_MARK LOGO: MD-025
 JV6763_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6763_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6763+STABILITY: SURFACE MOTION
 JV6763_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6763+SATELLITE: SATELLITE OBSERVATIONS - March 04, 2001
 JV6763
 JV6763  HISTORY     - Date     Condition        Report By
 JV6763  HISTORY     - 1989     MONUMENTED       RDA
 JV6763  HISTORY     - 20010304 GOOD             USPSQD
 JV6763
 JV6763                          STATION DESCRIPTION
 JV6763
 JV6763'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6763'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED EAST ALONG HARMONY
 JV6763'CHURCH ROAD 0.76 MILES TO ITS INTERSECTION WITH HIGHWAY 161.  TURN
 JV6763'LEFT AND PROCEED NORTH ALONG HIGHWAY 161 1.4 MILES TO PRIVATE DRIVE
 JV6763'BOX 839.  TURN RIGHT ALONG PRIVATE DRIVE BOX 839 AND GO UP A STEEP
 JV6763'DRIVEWAY 0.05 MILES TO THE MARK ON THE RIGHT.
 JV6763'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6763'ABOUT 1 INCH BELOW GROUND STAMPED 73 GLENVILLE 1989.  THE MARK IS 3.O
 JV6763'FEET NORTHWEST OF BARBED WIRE FENCE CORNER, 9.5 FEET SOUTHEAST OF THE
 JV6763'CENTERLINE OF THE PRIVATE DRIVEWAY BOX 839, AND 0.05 MILES FROM THE
 JV6763'EDGE OF PAVEMENT OF HIGHWAY 161 AND 7133.24 FEET FROM THE STATION.
 JV6763
 JV6763                          STATION RECOVERY (2001)
 JV6763
 JV6763'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV6763'CHANGE PART OF DESCRIPTION TO READ - STEEP DRIVEWAY .10 MILES TO THE
 JV6763'MARK ON THE RIGHT AND NEXT PARAGRAPH TO READ .10 MILES FROM THE EDGE
 JV6763'OF PAVEMENT OF HIGHWAY 161.  MARK IS 32 INCHES NORTHWEST OF WITNESS
 JV6763'POST.  CHANGE BARBED WIRE FENCE TO NEW STANDARD WIRE FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5005 ***********************************************************************
 HV5005  DESIGNATION -  GLYMONT 2
 HV5005  PID         -  HV5005
 HV5005  STATE/COUNTY-  MD/CHARLES
 HV5005  COUNTRY     -  US
 HV5005  USGS QUAD   -  INDIAN HEAD (2016)
 HV5005
 HV5005                         *CURRENT SURVEY CONTROL
 HV5005  ______________________________________________________________________
 HV5005* NAD 83(1993) POSITION- 38 36 38.18473(N) 077 08 24.77398(W)   ADJUSTED
 HV5005* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5005  ______________________________________________________________________
 HV5005  GEOID HEIGHT    -        -32.525 (meters)                     GEOID18
 HV5005  LAPLACE CORR    -         -1.65  (seconds)                    DEFLEC18
 HV5005  HORZ ORDER      -  THIRD
 HV5005
 HV5005.The horizontal coordinates were established by classical geodetic methods
 HV5005.and adjusted by the National Geodetic Survey in November 1994.
 HV5005
 HV5005.The orthometric height was scaled from a topographic map.
 HV5005
 HV5005.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5005.GEOID18 height accuracy estimate available here.
 HV5005
 HV5005.Click photographs - Photos may exist for this station.
 HV5005
 HV5005.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5005
 HV5005. The following values were computed from the NAD 83(1993) position.
 HV5005
 HV5005;                    North         East     Units Scale Factor Converg.
 HV5005;SPC MD       -   104,790.419   387,787.873   MT  0.99996050   -0 05 16.8
 HV5005;SPC MD       -   343,799.90  1,272,267.38   sFT  0.99996050   -0 05 16.8
 HV5005;SPC VA N     - 2,105,652.998 3,618,425.748   MT  0.99994839   +0 50 55.2
 HV5005;SPC VA N     - 6,908,296.54 11,871,451.81   sFT  0.99994839   +0 50 55.2
 HV5005;UTM  18      - 4,275,739.053   313,653.857   MT  1.00002764   -1 20 09.3
 HV5005
 HV5005!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5005!SPC MD       -   1.00000483  x   0.99996050  =   0.99996533
 HV5005!SPC VA N     -   1.00000483  x   0.99994839  =   0.99995322
 HV5005!UTM  18      -   1.00000483  x   1.00002764  =   1.00003247
 HV5005
 HV5005:                Primary Azimuth Mark                     Grid Az
 HV5005:SPC MD       -  INDIAN                                   259 26 57.7
 HV5005:SPC VA N     -  INDIAN                                   258 30 45.7
 HV5005:UTM  18      -  INDIAN                                   260 41 50.2
 HV5005
 HV5005_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1365375739(NAD 83)
 HV5005
 HV5005|---------------------------------------------------------------------|
 HV5005| PID    Reference Object                     Distance      Geod. Az  |
 HV5005|                                                           dddmmss.s |
 HV5005| DE5052 GLYMONT RM 1                         15.690 METERS 11221     |
 HV5005| DE5053 GLYMONT RM 2                         24.490 METERS 21051     |
 HV5005| HV5004 INDIAN                              APPROX. 2.4 KM 2592140.9 |
 HV5005|---------------------------------------------------------------------|
 HV5005
 HV5005                          SUPERSEDED SURVEY CONTROL
 HV5005
 HV5005  NAD 83(1991)-  38 36 38.18194(N)    077 08 24.77777(W) AD(       ) 3
 HV5005  NAD 83(1986)-  38 36 38.18470(N)    077 08 24.78638(W) AD(       ) 3
 HV5005  NAD 27      -  38 36 37.76000(N)    077 08 25.86800(W) AD(       ) 3
 HV5005
 HV5005.Superseded values are not recommended for survey control.
 HV5005
 HV5005.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5005.See file dsdata.pdf to determine how the superseded data were derived.
 HV5005
 HV5005_MARKER: DS = TRIANGULATION STATION DISK
 HV5005_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5005_STAMPING: GLYMONT 1928
 HV5005_MARK LOGO: CGS
 HV5005_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5005+STABILITY: SURFACE MOTION
 HV5005
 HV5005  HISTORY     - Date     Condition        Report By
 HV5005  HISTORY     - 1928     MONUMENTED       CGS
 HV5005  HISTORY     - 1928     GOOD             CGS
 HV5005  HISTORY     - 1938     MARK NOT FOUND   CGS
 HV5005  HISTORY     - 1958     GOOD             CGS
 HV5005
 HV5005                          STATION DESCRIPTION
 HV5005
 HV5005'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (PCD)
 HV5005'STATION IS LOCATED ON POINT, GRAVEL, JUST SE OF THE BLUFF AT THE
 HV5005'OLD DANCE HALL.  TWO REFERENCE MARKS WERE SET.  STATION WAS
 HV5005'NOT OCCUPIED.
 HV5005
 HV5005                          STATION RECOVERY (1928)
 HV5005
 HV5005'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV5005'STATION IS ON THE E SHORE OF THE POTOMAC RIVER ON THE FIRST SANDY
 HV5005'POINT S OF GLYMONT LIGHT AT THE SITE OF AN OLD WOODEN PIER NOW
 HV5005'FALLEN TO RUINS.  SLIGHTLY ABOVE HIGH-WATER LINE, A ROAD RUNS
 HV5005'FROM STATION PAST SOME OLD BUILDINGS, VISIBLE FROM STATION, NOW
 HV5005'USED AS A PASTEURIZING PLANT FOR A DAIRY FARM.  MARK PROJECTS
 HV5005'TWO INCHES ABOVE SURFACE, STAMPED GLYMONT 1928.
 HV5005'
 HV5005'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV5005'CONCRETE.
 HV5005'
 HV5005'REFERENCE MARK NO. 1 IS NE OF STATION, STAMPED GLYMONT NO. 1 1928.
 HV5005'
 HV5005'REFERENCE MARK NO. 2 IS STAMPED GLYMONT NO. 2 1928.
 HV5005'
 HV5005'A PORTABLE GRAVEL PLANT WAS OPERATED AT THIS POINT AT THE TIME
 HV5005'OF OBSERVATIONS.
 HV5005'
 HV5005'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV5005
 HV5005                          STATION RECOVERY (1938)
 HV5005
 HV5005'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV5005'THE STATION MARK AND THE REFERENCE MARKS WERE NOT FOUND AFTER
 HV5005'TWO HOURS SEARCH BY ONE MAN.  ALTHOUGH IT IS BELIEVED THAT SOME,
 HV5005'OR ALL, OF THE MARKS MAY STILL BE IN EXISTENCE, THEY HAVE BEEN
 HV5005'COVERED AND CANNOT BE FOUND EXCEPT BY ANGLES, OR LOCAL KNOWLEDGE.
 HV5005
 HV5005                          STATION RECOVERY (1958)
 HV5005
 HV5005'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV5005'STATION AND REFERENCE MARK NO. 2 FOUND IN GOOD CONDITION.  REFERENCE
 HV5005'MARK NO. 1 WAS NOT FOUND AFTER A SEARCH OF AN HOUR OR MORE.  A NEW
 HV5005'REFERENCE MARK WAS SET, GLYMONT NO. 3 1928.  IT IS A 12 INCH
 HV5005'CIRCULAR MONUMENT SET FLUSH WITH THE SURFACE OF THE GROUND.  THE
 HV5005'REFERENCE MARK IS IN THE CENTER OF AN OLD FOOT PATH LEADING FROM
 HV5005'THE WOODS TO THE BEACH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5006 ***********************************************************************
 HV5006  DESIGNATION -  GLYMONT LIGHT
 HV5006  PID         -  HV5006
 HV5006  STATE/COUNTY-  MD/CHARLES
 HV5006  COUNTRY     -  US
 HV5006  USGS QUAD   -  INDIAN HEAD (2016)
 HV5006
 HV5006                         *CURRENT SURVEY CONTROL
 HV5006  ______________________________________________________________________
 HV5006* NAD 83(1993) POSITION- 38 36 40.34182(N) 077 08 18.47930(W)   ADJUSTED
 HV5006  ______________________________________________________________________
 HV5006  GEOID HEIGHT    -        -32.526 (meters)                     GEOID18
 HV5006  LAPLACE CORR    -         -1.61  (seconds)                    DEFLEC18
 HV5006  HORZ ORDER      -  THIRD
 HV5006
 HV5006.The horizontal coordinates were established by classical geodetic methods
 HV5006.and adjusted by the National Geodetic Survey in November 1994.
 HV5006
 HV5006.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5006.GEOID18 height accuracy estimate available here.
 HV5006
 HV5006.Click photographs - Photos may exist for this station.
 HV5006
 HV5006.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5006
 HV5006. The following values were computed from the NAD 83(1993) position.
 HV5006
 HV5006;                    North         East     Units Scale Factor Converg.
 HV5006;SPC MD       -   104,856.699   387,940.262   MT  0.99996045   -0 05 12.9
 HV5006;SPC MD       -   344,017.35  1,272,767.34   sFT  0.99996045   -0 05 12.9
 HV5006;SPC VA N     - 2,105,721.760 3,618,577.032   MT  0.99994839   +0 50 59.1
 HV5006;SPC VA N     - 6,908,522.14 11,871,948.15   sFT  0.99994839   +0 50 59.1
 HV5006;UTM  18      - 4,275,802.003   313,807.664   MT  1.00002693   -1 20 05.5
 HV5006
 HV5006_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1380775802(NAD 83)
 HV5006
 HV5006                          SUPERSEDED SURVEY CONTROL
 HV5006
 HV5006  NAD 83(1991)-  38 36 40.33884(N)    077 08 18.48307(W) AD(       ) 3
 HV5006  NAD 83(1986)-  38 36 40.34147(N)    077 08 18.49179(W) AD(       ) 3
 HV5006  NAD 27      -  38 36 39.92000(N)    077 08 19.57600(W) AD(       ) 3
 HV5006
 HV5006.Superseded values are not recommended for survey control.
 HV5006
 HV5006.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5006.See file dsdata.pdf to determine how the superseded data were derived.
 HV5006
 HV5006_MARKER: 14 = NAVIGATION LIGHT
 HV5006
 HV5006  HISTORY     - Date     Condition        Report By
 HV5006  HISTORY     - UNK      FIRST OBSERVED
 HV5006
 HV5006                          STATION DESCRIPTION
 HV5006
 HV5006'DESCRIBED UNK
 HV5006'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5807 ***********************************************************************
 HV5807  DESIGNATION -  GO
 HV5807  PID         -  HV5807
 HV5807  STATE/COUNTY-  MD/QUEEN ANNES
 HV5807  COUNTRY     -  US
 HV5807  USGS QUAD   -  QUEENSTOWN (2016)
 HV5807
 HV5807                         *CURRENT SURVEY CONTROL
 HV5807  ______________________________________________________________________
 HV5807* NAD 83(1991) POSITION- 38 52 58.70073(N) 076 09 37.02428(W)   ADJUSTED
 HV5807* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5807  ______________________________________________________________________
 HV5807  GEOID HEIGHT    -        -34.229 (meters)                     GEOID18
 HV5807  LAPLACE CORR    -         -4.33  (seconds)                    DEFLEC18
 HV5807  HORZ ORDER      -  THIRD
 HV5807
 HV5807.The horizontal coordinates were established by classical geodetic methods
 HV5807.and adjusted by the National Geodetic Survey in January 1992.
 HV5807
 HV5807.The orthometric height was scaled from a topographic map.
 HV5807
 HV5807.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5807.GEOID18 height accuracy estimate available here.
 HV5807
 HV5807.Click photographs - Photos may exist for this station.
 HV5807
 HV5807.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5807
 HV5807. The following values were computed from the NAD 83(1991) position.
 HV5807
 HV5807;                    North         East     Units Scale Factor Converg.
 HV5807;SPC MD       -   135,350.194   472,856.525   MT  0.99994986   +0 31 37.3
 HV5807;SPC MD       -   444,061.43  1,551,363.45   sFT  0.99994986   +0 31 37.3
 HV5807;UTM  18      - 4,304,429.744   399,362.160   MT  0.99972471   -0 43 42.3
 HV5807
 HV5807!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5807!SPC MD       -   1.00000525  x   0.99994986  =   0.99995511
 HV5807!UTM  18      -   1.00000525  x   0.99972471  =   0.99972996
 HV5807
 HV5807:                Primary Azimuth Mark                     Grid Az
 HV5807:SPC MD       -  DIVIDE                                   088 52 12.4
 HV5807:UTM  18      -  DIVIDE                                   090 07 32.0
 HV5807
 HV5807_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9936204429(NAD 83)
 HV5807
 HV5807|---------------------------------------------------------------------|
 HV5807| PID    Reference Object                     Distance      Geod. Az  |
 HV5807|                                                           dddmmss.s |
 HV5807| CX2802 GO RM                                19.058 METERS 02235     |
 HV5807| HV5810 DIVIDE                              APPROX. 0.6 KM 0892349.7 |
 HV5807| HV5756 NODIM                               406.886 METERS 1892130.2 |
 HV5807| HV5775 TURN                                299.292 METERS 27505     |
 HV5807|---------------------------------------------------------------------|
 HV5807
 HV5807                          SUPERSEDED SURVEY CONTROL
 HV5807
 HV5807  NAD 83(1986)-  38 52 58.69619(N)    076 09 37.03732(W) AD(       ) 3
 HV5807  NAD 27      -  38 52 58.25600(N)    076 09 38.21900(W) AD(       ) 3
 HV5807  USSD        -  38 52 58.65100(N)    076 09 37.99000(W) AD(       ) 3
 HV5807
 HV5807.Superseded values are not recommended for survey control.
 HV5807
 HV5807.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5807.See file dsdata.pdf to determine how the superseded data were derived.
 HV5807
 HV5807_MARKER: N = NAIL
 HV5807_SETTING: 0 = UNSPECIFIED SETTING
 HV5807
 HV5807  HISTORY     - Date     Condition        Report By
 HV5807  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5807  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5807
 HV5807                          STATION DESCRIPTION
 HV5807
 HV5807'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5807'STATION IS ON WYE ISLAND, ON THE NORTHERN SHORE OF THE BRANCH OF
 HV5807'WYE RIVER BOUNDING WYE ISLAND ON THE S, ON POINT BETWEEN TWO COVES
 HV5807'ABOUT 1/4 MILE W OF ENTRANCE TO DIVIDING CREEK, ON A GRASSY BEACH
 HV5807'AT HIGH WATER, ABOUT 2 YARDS S OF FOOT OF BANK 4 FEET HIGH,
 HV5807'COVERED WITH A DENSE GROWTH OF YOUNG TREES, AND 37 YARDS FROM
 HV5807'ENTRANCE TO A SMALL CREEK.  STATION IS MARKED BY A NAIL IN CENTER
 HV5807'OF 2-INCH PINE STUB PROJECTING 2 INCHES ABOVE 2-INCH TILE PIPE
 HV5807'WITH TOP 2 INCHES BELOW SURFACE OF SAND.  SUBSURFACE MARK IS
 HV5807'CENTER OF 2-INCH DRAINTILE, BURIED WITH THE TOP 2 INCHES BELOW THE
 HV5807'BASE OF THE MONUMENT.  REFERENCE MARK IS MARKED BY HOLE IN THE
 HV5807'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5807'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5807'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5807'COUNTER-SUNK IN TOP OF POST.  IT IS 19.06 METERS (62.5 FEET) FROM
 HV5807'THE STATION N 22 DEG 35 MIN E.  OTHER DISTANCES AND BEARINGS ARE
 HV5807'AS FOLLOWS--PEAK OF GABLE ON BALDWIN HOUSE, 7/8 MILE, S 13 DEG 36
 HV5807'MIN W.  BALDWIN WINDMILL, 7/8 MILE, S 13 DEG 37 MIN W.  NEAR
 HV5807'CORNER OF SQUARE CHIMNEY OF HOUSE, 3/4 MILE, S 68 DEG 34 MIN W.
 HV5807'CUPOLA ON BARN, 3/4 MILE, S 73 DEG 44 MIN W.  NAIL IN BLAZE IN
 HV5807'4-INCH GUM TREE, 6.68 METERS (21.92 FEET), N 21 DEG 30 MIN W.
 HV5807'NAIL IN BLAZE IN 2-INCH GUM TREE, 5.73 METERS (18.80 FEET), N 1
 HV5807'DEG 40 MIN E.  NAIL IN BLAZE IN 4-INCH GUM TREE, 4.15 METERS
 HV5807'(13.62 FEET) N 42 DEG 31 MIN E.  NEAR PEAK OF SHANTY, 7/8 MILE, S
 HV5807'42 DEG 20 MIN E.  CHIMNEY OF HOUSE, 7/8 MILE, S 38 DEG 50 MIN E.
 HV5807
 HV5807                          STATION RECOVERY (1940)
 HV5807
 HV5807'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5807'STATION AND REFERENCE MARKS SEARCHED FOR BUT NOT FOUND.  NONE OF
 HV5807'THE REFERENCE TREES COULD BE FOUND.  POINT SHOWS EVIDENCE OF
 HV5807'CONSIDERABLE EROSION.
 HV5807'
 HV5807'REFERENCE MARK MAY BE COVERED BY HEAVY BRUSH AND FALLEN TREES.
 HV5807'
 HV5807'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5872 ***********************************************************************
 JV5872  DESIGNATION -  GODDARD
 JV5872  PID         -  JV5872
 JV5872  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5872  COUNTRY     -  US
 JV5872  USGS QUAD   -  LAUREL (2016)
 JV5872
 JV5872                         *CURRENT SURVEY CONTROL
 JV5872  ______________________________________________________________________
 JV5872* NAD 83(1991) POSITION- 39 01 14.74861(N) 076 49 40.57733(W)   ADJUSTED
 JV5872* NAVD 88 ORTHO HEIGHT -    51.688 (meters)      169.58  (feet) ADJUSTED
 JV5872  ______________________________________________________________________
 JV5872  GEOID HEIGHT    -        -32.378 (meters)                     GEOID18
 JV5872  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 JV5872  DYNAMIC HEIGHT  -         51.660 (meters)      169.49  (feet) COMP
 JV5872  MODELED GRAVITY -    980,090.6   (mgal)                       NAVD 88
 JV5872
 JV5872  HORZ ORDER      -  FIRST
 JV5872  VERT ORDER      -  SECOND    CLASS II
 JV5872
 JV5872.The horizontal coordinates were established by classical geodetic methods
 JV5872.and adjusted by the National Geodetic Survey in January 1992.
 JV5872
 JV5872.The orthometric height was determined by differential leveling and
 JV5872.adjusted by the NATIONAL GEODETIC SURVEY
 JV5872.in April 1999.
 JV5872
 JV5872.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5872.GEOID18 height accuracy estimate available here.
 JV5872
 JV5872.Click photographs - Photos may exist for this station.
 JV5872
 JV5872.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5872
 JV5872.The dynamic height is computed by dividing the NAVD 88
 JV5872.geopotential number by the normal gravity value computed on the
 JV5872.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV5872.degrees latitude (g = 980.6199 gals.).
 JV5872
 JV5872.The modeled gravity was interpolated from observed gravity values.
 JV5872
 JV5872. The following values were computed from the NAD 83(1991) position.
 JV5872
 JV5872;                    North         East     Units Scale Factor Converg.
 JV5872;SPC MD       -   150,325.215   414,900.034   MT  0.99995304   +0 06 28.8
 JV5872;SPC MD       -   493,191.98  1,361,217.86   sFT  0.99995304   +0 06 28.8
 JV5872;UTM  18      - 4,320,670.319   341,756.278   MT  0.99990835   -1 09 04.0
 JV5872
 JV5872!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5872!SPC MD       -   0.99999697  x   0.99995304  =   0.99995001
 JV5872!UTM  18      -   0.99999697  x   0.99990835  =   0.99990532
 JV5872
 JV5872:                Primary Azimuth Mark                     Grid Az
 JV5872:SPC MD       -  PRINCE AZ MK                             049 54 40.0
 JV5872:UTM  18      -  PRINCE AZ MK                             051 10 12.8
 JV5872
 JV5872_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4175620670(NAD 83)
 JV5872
 JV5872|---------------------------------------------------------------------|
 JV5872| PID    Reference Object                     Distance      Geod. Az  |
 JV5872|                                                           dddmmss.s |
 JV5872| JV5873 GODDARD 2                            36.216 METERS 02824     |
 JV5872| JV5865 PRINCE AZ MK                        APPROX. 0.8 KM 0500108.8 |
 JV5872| JV5895 NORTH GEOS PIER                      44.064 METERS 06238     |
 JV5872| JV5856 PIER                                 12.800 METERS 08518     |
 JV5872| JV5894 SOUTH GEOS PIER                      76.948 METERS 14903     |
 JV5872| CA9454 GODDARD RM 1                         12.852 METERS 24317     |
 JV5872| JV5937 BELTSVILLE DA RSCH CTR N TANK       APPROX. 4.5 KM 2921858.7 |
 JV5872| CA9455 GODDARD RM 2                         13.820 METERS 33237     |
 JV5872|---------------------------------------------------------------------|
 JV5872
 JV5872                          SUPERSEDED SURVEY CONTROL
 JV5872
 JV5872  NAD 83(1986)-  39 01 14.74688(N)    076 49 40.58835(W) AD(       ) 1
 JV5872  NAD 27      -  39 01 14.35131(N)    076 49 41.69242(W) AD(       ) 1
 JV5872  NGVD 29 (07/19/86)   51.9    (m)          170.     (f) VERT ANG       
 JV5872
 JV5872.Superseded values are not recommended for survey control.
 JV5872
 JV5872.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5872.See file dsdata.pdf to determine how the superseded data were derived.
 JV5872
 JV5872_MARKER: DS = TRIANGULATION STATION DISK
 JV5872_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5872_STAMPING: GODDARD 1962
 JV5872_MARK LOGO: CGS
 JV5872_PROJECTION: FLUSH
 JV5872_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5872_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5872+STABILITY: SURFACE MOTION
 JV5872
 JV5872  HISTORY     - Date     Condition        Report By
 JV5872  HISTORY     - 1962     MONUMENTED       CGS
 JV5872  HISTORY     - 1962     GOOD             CGS
 JV5872  HISTORY     - 1966     GOOD             CGS
 JV5872  HISTORY     - 19980818 GOOD             NGS
 JV5872  HISTORY     - 20181030 GOOD             NGS
 JV5872
 JV5872                          STATION DESCRIPTION
 JV5872
 JV5872'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 JV5872'THE STATION IS LOCATED ON A SMALL KNOLL NEAR THE WEST, CENTRAL
 JV5872'SECTION OF THE BELTSVILLE AGRICULTURE RESEARCH CENTER AIRPORT
 JV5872'GROUNDS, ABOUT 3.5 MILES NORTHWEST OF BOWIE, MARYLAND, 3.5 MILES
 JV5872'EAST OF BELTSVILLE, MARYLAND ABOUT 3.0 MILES SOUTHEAST OF LAUREL,
 JV5872'MARYLAND AND ABOUT 0.05 MILE EAST OF A NORTH AND SOUTH BLACKTOP
 JV5872'ROAD.
 JV5872'
 JV5872'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 197 AND 564
 JV5872'AT THE NORTH END OF THE RAILROAD BRIDGE IN BOWIE, MARYLAND.  GO WEST
 JV5872'ON STATE HIGHWAY 564 FOR 1.65 MILES TO A SIDE ROAD RIGHT,
 JV5872'SPRINGFIELD ROAD.  TURN RIGHT AND GO NORTH-NORTHWEST ON THE
 JV5872'SPRINGFIELD ROAD FOR 0.95 MILE TO A SIDE ROAD LEFT.  CONTINUE
 JV5872'STRAIGHT AHEAD, NORTH-NORTHWEST ON THE BLACKTOP ROAD
 JV5872'FOR 0.7 MILE TO A Y-FORK INTERSECTION.  TAKE THE RIGHT HAND
 JV5872'FORK AND CONTINUE NORTH ON A BLACKTOP ROAD FOR 1.3 MILES TO A
 JV5872'WIRE GATE, LOCKED, ON THE RIGHT, EAST, SIDE OF THE ROAD.
 JV5872'UNLOCK, AND PASS THROUGH THE GATE AND GO NORTH, UPHILL, ON A
 JV5872'TRACK ROAD FOR 0.1 MILE TO A ROUND CONCRETE CINDER BLOCK BUILDING AND
 JV5872'THE STATION.
 JV5872'
 JV5872'THE STATION MARK, A STANDARD DISK STAMPED GODDARD 1962, IS SET IN TOP
 JV5872'OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 2 INCHES
 JV5872'ABOVE THE SURFACE OF THE GROUND.  IT IS 47.0 FEET SOUTH OF A
 JV5872'STANDARD METAL WITNESS POST AND MARKER, 42.3 FEET EAST OF A SECOND
 JV5872'STANDARD METAL WITNESS POST AND MARKER, 40.1 FEET WEST OF THE
 JV5872'DOOR OF THE BUILDING AND 1.0 FOOT WEST OF A STANDARD METAL WITNESS
 JV5872'POST AND MARKER.
 JV5872'
 JV5872'REFERENCE MARK 1, A STANDARD DISK STAMPED GODDARD NO 1 1962, IS SET
 JV5872'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 3
 JV5872'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 1.0 FOOT NORTH OF A
 JV5872'STANDARD METAL WITNESS POST AND MARKER AND ABOUT THE SAME ELEVATION
 JV5872'AS THE STATION.
 JV5872'
 JV5872'REFERENCE MARK 2, A STANDARD DISK STAMPED GODDARD NO 2 1962, IS SET
 JV5872'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 4
 JV5872'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 1.4 FEET SOUTH OF A
 JV5872'STANDARD METAL WITNESS POST AND MARKER AND ABOUT THE SAME ELEVATION
 JV5872'AS THE STATION.
 JV5872'
 JV5872'THE PIER, A HOLLOW CONCRETE PIER PROJECTING ABOUT 36 INCHES ABOVE A
 JV5872'CONCRETE FLOOR AND 2.0 FOOT IN DIAMETER, SET IN THE CENTER OF A
 JV5872'14-FOOT IN DIAMETER CONCRETE CINDER BLOCK BUILDING WITH A 10-FOOT
 JV5872'SIDES.  THE BUILDING IS PAINTED WHITE ON THE OUTSIDE.  A TRAVERSE
 JV5872'CONNECTION WAS MADE TO TRIANGULATION STATION GODDARD, DISTANCE
 JV5872'BEING 12.800 METERS EAST OF STATION GODDARD.
 JV5872'
 JV5872'AN AZIMUTH MARK WAS NOT ESTABLISHED FOR THIS STATION.  PRINCE AZIMUTH
 JV5872'MARK MAY BE USED AS AN AZIMUTH MARK.
 JV5872'
 JV5872'HEIGHT OF LIGHT ABOVE STATION MARK 2 METERS.
 JV5872
 JV5872                          STATION RECOVERY (1962)
 JV5872
 JV5872'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962
 JV5872'RECOVERED IN GOOD CONDITION.
 JV5872
 JV5872                          STATION RECOVERY (1966)
 JV5872
 JV5872'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV5872'THE STATION MARK, REFERENCE MARKS NO. 1 AND NO. 2 WERE RECOVERED AND
 JV5872'FOUND IN GOOD CONDITION.  REFERENCE MARK NO. 1 IS OBSTRUCTED BY A
 JV5872'BUILDING.  A TOWER COULD NOT BE ERECTED OVER THE STATION MARK.
 JV5872'STATION GODDARD 2 WAS ESTABLISHED AND A TRAVERSE CONNECTION WAS
 JV5872'MADE TO STATION GODDARD 1962.
 JV5872'
 JV5872'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES SOUTHEAST
 JV5872'OF LAUREL.
 JV5872
 JV5872                          STATION RECOVERY (1998)
 JV5872
 JV5872'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 JV5872'RECOVERED AS DESCRIBED.
 JV5872
 JV5872                          STATION RECOVERY (2018)
 JV5872
 JV5872'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2018 (BTE)
 JV5872'AT THE TIME OF RECOVERY, NEW CONSTRUCTION WAS BEGINNING NEAR THE
 JV5872'STATION.
 JV5872'
 JV5872'THE STATION IS APPROXIMATELY 1 M (3.3 FT) NORTHWEST OF THE NORTHWEST
 JV5872'CORNER OF THE PROPOSED STRUCTURE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5873 ***********************************************************************
 JV5873  DESIGNATION -  GODDARD 2
 JV5873  PID         -  JV5873
 JV5873  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5873  COUNTRY     -  US
 JV5873  USGS QUAD   -  LAUREL (2016)
 JV5873
 JV5873                         *CURRENT SURVEY CONTROL
 JV5873  ______________________________________________________________________
 JV5873* NAD 83(1991) POSITION- 39 01 15.78165(N) 076 49 39.86125(W)   ADJUSTED
 JV5873* NAVD 88 ORTHO HEIGHT -    50.936 (meters)      167.11  (feet) ADJUSTED
 JV5873  ______________________________________________________________________
 JV5873  GEOID HEIGHT    -        -32.378 (meters)                     GEOID18
 JV5873  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 JV5873  DYNAMIC HEIGHT  -         50.909 (meters)      167.02  (feet) COMP
 JV5873  MODELED GRAVITY -    980,090.6   (mgal)                       NAVD 88
 JV5873
 JV5873  HORZ ORDER      -  FIRST
 JV5873  VERT ORDER      -  SECOND    CLASS II
 JV5873
 JV5873.The horizontal coordinates were established by classical geodetic methods
 JV5873.and adjusted by the National Geodetic Survey in January 1992.
 JV5873
 JV5873.The orthometric height was determined by differential leveling and
 JV5873.adjusted by the NATIONAL GEODETIC SURVEY
 JV5873.in April 1999.
 JV5873
 JV5873.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5873.GEOID18 height accuracy estimate available here.
 JV5873
 JV5873.Click photographs - Photos may exist for this station.
 JV5873
 JV5873.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5873
 JV5873.The dynamic height is computed by dividing the NAVD 88
 JV5873.geopotential number by the normal gravity value computed on the
 JV5873.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV5873.degrees latitude (g = 980.6199 gals.).
 JV5873
 JV5873.The modeled gravity was interpolated from observed gravity values.
 JV5873
 JV5873. The following values were computed from the NAD 83(1991) position.
 JV5873
 JV5873;                    North         East     Units Scale Factor Converg.
 JV5873;SPC MD       -   150,357.103   414,917.199   MT  0.99995305   +0 06 29.2
 JV5873;SPC MD       -   493,296.60  1,361,274.18   sFT  0.99995305   +0 06 29.2
 JV5873;UTM  18      - 4,320,701.820   341,774.139   MT  0.99990828   -1 09 03.6
 JV5873
 JV5873!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5873!SPC MD       -   0.99999709  x   0.99995305  =   0.99995014
 JV5873!UTM  18      -   0.99999709  x   0.99990828  =   0.99990537
 JV5873
 JV5873:                Primary Azimuth Mark                     Grid Az
 JV5873:SPC MD       -  PRINCE AZ MK                             050 52 09.0
 JV5873:UTM  18      -  PRINCE AZ MK                             052 07 41.8
 JV5873
 JV5873_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4177420701(NAD 83)
 JV5873
 JV5873|---------------------------------------------------------------------|
 JV5873| PID    Reference Object                     Distance      Geod. Az  |
 JV5873|                                                           dddmmss.s |
 JV5873| JV5865 PRINCE AZ MK                        APPROX. 0.8 KM 0505838.2 |
 JV5873| JV5872 GODDARD                              36.216 METERS 20824     |
 JV5873| CA9455 GODDARD RM 2                         30.669 METERS 23017     |
 JV5873|---------------------------------------------------------------------|
 JV5873
 JV5873                          SUPERSEDED SURVEY CONTROL
 JV5873
 JV5873  NAD 83(1986)-  39 01 15.77973(N)    076 49 39.87238(W) AD(       ) 1
 JV5873  NAD 27      -  39 01 15.38437(N)    076 49 40.97642(W) AD(       ) 1
 JV5873  NGVD 29              51.12   (m)          167.7    (f) LEVELING    3  
 JV5873
 JV5873.Superseded values are not recommended for survey control.
 JV5873
 JV5873.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5873.See file dsdata.pdf to determine how the superseded data were derived.
 JV5873
 JV5873_MARKER: DS = TRIANGULATION STATION DISK
 JV5873_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5873_STAMPING: GODDARD 2 1966
 JV5873_MARK LOGO: CGS
 JV5873_PROJECTION: FLUSH
 JV5873_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV5873_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5873+STABILITY: SURFACE MOTION
 JV5873
 JV5873  HISTORY     - Date     Condition        Report By
 JV5873  HISTORY     - 1966     MONUMENTED       CGS
 JV5873  HISTORY     - 19980818 GOOD             NGS
 JV5873
 JV5873                          STATION DESCRIPTION
 JV5873
 JV5873'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV5873'THE STATION IS LOCATED ON A KNOLL NEAR THE WEST, CENTRAL SECTION OF
 JV5873'THE BELTSVILLE AGRICULTURAL RESEARCH CENTER AIRPORT GROUNDS, ABOUT 3
 JV5873'1/2 MILES NORTHWEST OF BOWIE, MARYLAND, 3-1/2 MILES EAST OF
 JV5873'BELTVILLE, MARYLAND, 3 MILES SOUTHEAST OF LAUREL, MARYLAND AND 0.1
 JV5873'MILE EAST OF SPRINGFIELD RD.
 JV5873'
 JV5873'TO REACH THE STATION FROM THE TRAFFIC LIGHT AT THE INTERSECTION OF
 JV5873'U.S. HIGHWAY 1 AND POWDER MILL RD AT BELTSVILLE, MARYLAND, GO EAST
 JV5873'ON POWDER MILL RD FOR 0.45 MILE TO THE JUNCTION OF EDMONSTON ROAD
 JV5873'AND THE ENTRANCE TO THE AGRICULTURAL RESEARCH CENTER.  CONTINUE EAST
 JV5873'ON POWDER MILL RD, ENTERING THE AGRICULTURAL RESEARCH CENTER FOR 2.8
 JV5873'MILES TO THE INTERSECTION OF POWDER MILL RD AND THE
 JV5873'BALTIMORE-WASHINGTON PARKWAY (BELTSVILLE EXIT).  CONTINUE EAST
 JV5873'ON POWDER MILL RD, UNDER THE PARKWAY FOR 0.3 MILE TO THE JUNCTION
 JV5873'OF S.C.S. ROAD AND SIGNS ARC AIRPORT AND C AND GS SATELLITE TRI.
 JV5873'CONTINUE EAST ON POWDER MILL RD FOR 0.35 MILE TO THE JUNCTION OF
 JV5873'SPRINGFIELD RD AND SIGNS ARC AIRPORT AND C AND GS SATELLITE
 JV5873'TRI.  BEAR RIGHT AND GO SOUTHEAST ON SPRINGFIELD RD FOR 1.25 MILES
 JV5873'TO A GATE ON THE LEFT AND A SIGN GSFC OPTICAL SITE ON THE RIGHT.
 JV5873'TURN LEFT, PASS THROUGH THE GATE AND GO NORTHEAST, UPHILL, ON A
 JV5873'BLACK-TOP ROAD FOR 0.1 MILE TO THE STATION ON THE LEFT.
 JV5873'
 JV5873'THE STATION MARK IS A STANDARD DISK STAMPED GODDARD 2 1966, SET IN
 JV5873'TOP OF A CYLINDERICAL CONCRETE MONUMENT 12 INCHES IN DIAMETER AND 2
 JV5873'INCHES BELOW THE SURFACE OF THE GROUND.  IT IS 119 FEET NORTHEAST OF
 JV5873'A METAL WITNESS POST, 93 FEET NORTHEAST OF A DOME SHAPED BUILDING
 JV5873'AND 54.5 FEET WEST OF THE CENTER OF THE BLACK-TOP ROAD.
 JV5873'
 JV5873'REFERENCE MARK NO. 2 IS A STANDARD DISK STAMPED GODDARD NO 2 1942,
 JV5873'SET IN TOP OF A 10-INCH SQUARE CONCRETE POST 2 INCHES BELOW THE
 JV5873'SURFACE OF THE GROUND.  IT IS 66 FEET NORTHWEST OF THE CENTER OF THE
 JV5873'DOOR OF THE DOME SHAPED BUILDING, 46.5 FEET NORTH-NORTHWEST OF A
 JV5873'METAL WITNESS POST AND 1.5 FEET SOUTH OF A METAL WITNESS POST.
 JV5873'
 JV5873'STATION MARK GODDARD 1942 IS A STANDARD STATION DISK SET IN TOP OF A
 JV5873'10-INCH SQUARE CONCRETE POST FLUSH WITH THE SURFACE OF THE GROUND.
 JV5873'IT IS 47 FEET SOUTHEAST OF A METAL WITNESS POST, 33.5 FEET WEST OF
 JV5873'THE CENTER OF THE DOOR OF THE DOME SHAPED BUILDING AND 1 FOOT WEST OF
 JV5873'A METAL WITNESS POST.  THIS MARK IS USED AS A REFERENCE MARK FOR
 JV5873'STATION GODDARD 2.
 JV5873'
 JV5873'NOTE--PRINCE 1942 AZIMUTH MARK WAS USED FOR THE AZIMUTH MARK FOR THIS
 JV5873'STATION.  SEE DESCRIPTION THEREOF.
 JV5873
 JV5873                          STATION RECOVERY (1998)
 JV5873
 JV5873'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 JV5873'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AH5616 ***********************************************************************
 AH5616  DESIGNATION -  GODDARD CA
 AH5616  PID         -  AH5616
 AH5616  STATE/COUNTY-  MD/PRINCE GEORGES
 AH5616  COUNTRY     -  US
 AH5616  USGS QUAD   -  LAUREL (2016)
 AH5616
 AH5616                         *CURRENT SURVEY CONTROL
 AH5616  ______________________________________________________________________
 AH5616* NAD 83(1986) POSITION- 39 01 12.6    (N) 076 49 38.9    (W)   HD_HELD2
 AH5616* NAVD 88 ORTHO HEIGHT -    52.528 (meters)      172.34  (feet) ADJUSTED
 AH5616  ______________________________________________________________________
 AH5616  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 AH5616  DYNAMIC HEIGHT  -         52.500 (meters)      172.24  (feet) COMP
 AH5616  MODELED GRAVITY -    980,090.6   (mgal)                       NAVD 88
 AH5616
 AH5616  VERT ORDER      -  SECOND    CLASS II
 AH5616
 AH5616.The horizontal coordinates were established by autonomous hand held GPS
 AH5616.observations and have an estimated accuracy of +/- 10 meters.
 AH5616
 AH5616.The orthometric height was determined by differential leveling and
 AH5616.adjusted by the NATIONAL GEODETIC SURVEY
 AH5616.in April 1999.
 AH5616
 AH5616.Significant digits in the geoid height do not necessarily reflect accuracy.
 AH5616.GEOID18 height accuracy estimate available here.
 AH5616
 AH5616.Click photographs - Photos may exist for this station.
 AH5616
 AH5616.The dynamic height is computed by dividing the NAVD 88
 AH5616.geopotential number by the normal gravity value computed on the
 AH5616.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AH5616.degrees latitude (g = 980.6199 gals.).
 AH5616
 AH5616.The modeled gravity was interpolated from observed gravity values.
 AH5616
 AH5616;                    North         East    Units  Estimated Accuracy
 AH5616;SPC MD       -   150,259.      414,941.      MT  (+/- 10 meters HH2 GPS)
 AH5616
 AH5616_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4179520603(NAD 83)
 AH5616
 AH5616                          SUPERSEDED SURVEY CONTROL
 AH5616
 AH5616.No superseded survey control is available for this station.
 AH5616
 AH5616_MARKER: DG = GRAVITY STATION DISK
 AH5616_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AH5616_STAMPING: GODDARD CA 1986
 AH5616_MARK LOGO: NGS
 AH5616_PROJECTION: FLUSH
 AH5616_MAGNETIC: N = NO MAGNETIC MATERIAL
 AH5616_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AH5616+STABILITY: SURFACE MOTION
 AH5616_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AH5616+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2018
 AH5616
 AH5616  HISTORY     - Date     Condition        Report By
 AH5616  HISTORY     - 1986     MONUMENTED       NGS
 AH5616  HISTORY     - 19980427 GOOD             NGS
 AH5616  HISTORY     - 19980818 GOOD             NGS
 AH5616  HISTORY     - 20181031 GOOD             NGS
 AH5616
 AH5616                          STATION DESCRIPTION
 AH5616
 AH5616'DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (DW)
 AH5616'ANOTHER ALIAS IS NN 66. STATION IS AT NASA/GODDARD GEOPHYSICS AND
 AH5616'ASTRONOMICAL OBSERVATORY (FORMERLY GORF) IN GREENBELT, MARYLAND.  IT
 AH5616'IS 15.0 MI (24.1 KM) NE OF WASHINGTON ZERO MILESTONE.  TO ACCESS FROM
 AH5616'EXIT 22A OF I-95/I-495, GO N ON BALTIMORE-WASHINGTON PARKWAY FOR 3.4
 AH5616'MI (5.5 KM) .  TURN E (RIGHT) ONTO POWDER MILL ROAD AND GO 0.6 MI (1.0
 AH5616'KM) .  TURN SE (RIGHT) ONTO SPRINGFIELD ROAD AND GO 1.2 MI (1.9 KM) TO
 AH5616'OBSERVATORY GATE 2-1 ON LEFT.  STATION IS 70.5 M (231.3 FT) N40E OF SE
 AH5616'GATE POST, ON TRIANGULAR CONCRETE POST ( 1 M (3.3 FT) ON A SIDE BY 0.6
 AH5616'M (2.0 FT) TALL) WITH NASA DISK, 24 M (78.7 FT) S41E OF SE CORNER OF
 AH5616'BUILDING 201, 18.4 M (60.4 FT) E OF NGS ROD MARK GORF 1989, 7.9 M
 AH5616'(25.9 FT) E OF CENTER OF ROAD AND 10.6 M (34.8 FT) SSW OF NASA DISK
 AH5616'GORF-MTLRS 7125 1985 AND 9.7 M (31.8 FT) N20E OF A FIRE HYDRANT. DISK
 AH5616'FACES NW.  CONTACT IS MIKE PERRY.
 AH5616
 AH5616                          STATION RECOVERY (1998)
 AH5616
 AH5616'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 AH5616'3.9 MILES (6.3 KM) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 AH5616'OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 1.9 KM (1.2 MI) SOUTHEASTERLY
 AH5616'ALONG SPRINGFIELD ROAD, THENCE 0.08 KM (0.05 MI) NORTHERLY ALONG THE
 AH5616'GODDARD OPTICAL RESEARCH FACILITY ENTRANCE ROAD TO MARK ON RIGHT,
 AH5616'ACROSS THE ROAD FROM BM GORF,  ON TOP OF A 1.0 METER (3.3 FT)
 AH5616'EQUILATERAL TRIANGULAR CONCRETE PILLAR WHICH PROJECTS 0.6 METER (2.0
 AH5616'FT) ABOVE THE GROUND, 0.12 METER (0.4 FT) NORTHWEST OF THE NASA-GSFC
 AH5616'DISK (SOUTH GEOS PIER), WHICH IS ON THE SAME PILLAR, 86.2 METERS
 AH5616'(282.8 FT) SOUTHERNLY OF BM NORTH GEOS PIER, 18.5 METERS (60.6 FT)
 AH5616'EAST OF AND ACROSS ENTRANCE ROAD FROM BM GORF, AND 24.0 METERS (78.7
 AH5616'FT) SOUTHEAST OF THE SOUTHEAST CORNER OF A CINDERBLOCK BUILDING NUMBER
 AH5616'201.
 AH5616
 AH5616                          STATION RECOVERY (2018)
 AH5616
 AH5616'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2018 (BTE)
 AH5616'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AH3878 ***********************************************************************
 AH3878  DESIGNATION -  GODDARD DA
 AH3878  PID         -  AH3878
 AH3878  STATE/COUNTY-  MD/PRINCE GEORGES
 AH3878  COUNTRY     -  US
 AH3878  USGS QUAD   -  LAUREL (2016)
 AH3878
 AH3878                         *CURRENT SURVEY CONTROL
 AH3878  ______________________________________________________________________
 AH3878* NAD 83(1986) POSITION- 39 01 15.4    (N) 076 49 39.0    (W)   HD_HELD2
 AH3878* NAVD 88 ORTHO HEIGHT -    52.624 (meters)      172.65  (feet) ADJUSTED
 AH3878  ______________________________________________________________________
 AH3878  GEOID HEIGHT    -        -32.379 (meters)                     GEOID18
 AH3878  DYNAMIC HEIGHT  -         52.596 (meters)      172.56  (feet) COMP
 AH3878  MODELED GRAVITY -    980,090.6   (mgal)                       NAVD 88
 AH3878
 AH3878  VERT ORDER      -  SECOND    CLASS II
 AH3878
 AH3878.The horizontal coordinates were established by autonomous hand held GPS
 AH3878.observations and have an estimated accuracy of +/- 10 meters.
 AH3878
 AH3878.The orthometric height was determined by differential leveling and
 AH3878.adjusted by the NATIONAL GEODETIC SURVEY
 AH3878.in June 1991.
 AH3878
 AH3878.Significant digits in the geoid height do not necessarily reflect accuracy.
 AH3878.GEOID18 height accuracy estimate available here.
 AH3878
 AH3878.Click photographs - Photos may exist for this station.
 AH3878
 AH3878.The dynamic height is computed by dividing the NAVD 88
 AH3878.geopotential number by the normal gravity value computed on the
 AH3878.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AH3878.degrees latitude (g = 980.6199 gals.).
 AH3878
 AH3878.The modeled gravity was interpolated from observed gravity values.
 AH3878
 AH3878;                    North         East    Units  Estimated Accuracy
 AH3878;SPC MD       -   150,345.      414,938.      MT  (+/- 10 meters HH2 GPS)
 AH3878
 AH3878_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4179420689(NAD 83)
 AH3878
 AH3878                          SUPERSEDED SURVEY CONTROL
 AH3878
 AH3878.No superseded survey control is available for this station.
 AH3878
 AH3878_MARKER: DG = GRAVITY STATION DISK
 AH3878_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AH3878_STAMPING: GODDARD DA 1986
 AH3878_MARK LOGO: NGS
 AH3878_PROJECTION: FLUSH
 AH3878_MAGNETIC: N = NO MAGNETIC MATERIAL
 AH3878_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AH3878+STABILITY: SURFACE MOTION
 AH3878_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AH3878+SATELLITE: SATELLITE OBSERVATIONS - October 31, 2018
 AH3878
 AH3878  HISTORY     - Date     Condition        Report By
 AH3878  HISTORY     - 1986     MONUMENTED       NGS
 AH3878  HISTORY     - 19901015 GOOD             NGS
 AH3878  HISTORY     - 19980427 GOOD             NGS
 AH3878  HISTORY     - 19980818 GOOD             NGS
 AH3878  HISTORY     - 20181031 GOOD             NGS
 AH3878
 AH3878                          STATION DESCRIPTION
 AH3878
 AH3878'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 AH3878'6.3 KM (3.9 MI) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION OF
 AH3878'STATE HIGHWAY 1 IN BELTSVILLE, THENCE 1.9 KM (1.2 MI) SOUTHEASTERLY
 AH3878'ALONG SPRINGFIELD ROAD, THENCE 0.2 KM (0.1 MI) NORTHERLY ALONG THE
 AH3878'NASA OPTICAL TEST SITE CENTER ENTRANCE ROAD, NEAR THE CENTER OF A
 AH3878'36-INCH TRIANGULAR SHAPED CONCRETE BLOCK, 17.1 M (56.1 FT) NORTH OF
 AH3878'THE NORTH FACE OF BUILDING NUMBER 204, 9.3 M (30.5 FT) EAST OF THE
 AH3878'ROAD CENTER, 6.6 M (21.7 FT) NORTHWEST OF A FIRE HYDRANT, 3.5 M
 AH3878'(11.5 FT) NORTHWEST OF THE NORTHWEST CORNER OF A SMALL BUILDING, 0.6
 AH3878'M (2.0 FT) ABOVE THE LEVEL OF THE ROAD, AND 0.2 M (0.7 FT) WEST OF
 AH3878'NASA SURVEY STATION NORTH GEOS PIER.
 AH3878
 AH3878                          STATION RECOVERY (1998)
 AH3878
 AH3878'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (DW)
 AH3878'ANOTHER ALIAS IS NN 67. STATION IS AT NASA/GODDARD GEOPHYSICS AND
 AH3878'ASTRONOMICAL OBSERVATORY (FORMERLY GORF) IN GREENBELT, MARYLAND.  IT
 AH3878'IS 15.0 MI (24.1 KM) NE OF WASHINGTON ZERO MILESTONE.  TO ACCESS FROM
 AH3878'EXIT 22A OF I-95/I495, GO N ON BALTIMORE-WASHINGTON PARKWAY FOR 3.4 MI
 AH3878'(5.5 KM) .  TURN E (RIGHT) ONTO POWDER MILL ROAD AND GO 0.6 MI (1.0
 AH3878'KM) .  TURN SE (RIGHT) ONTO SPRINGFIELD ROAD AND GO 1.2 MI (1.9 KM) TO
 AH3878'OBSERVATORY ON LEFT.  TURN LEFT, THROUGH GATE 2-1 AND GO 120 M (393.7
 AH3878'FT) TO STATION ON RIGHT.  STATION IS ON TRIANGULAR CONCRETE POST ( 1 M
 AH3878'(3.3 FT) ON A SIDE BY 0.6 M (2.0 FT) TALL) WITH NASA DISK FFB-196,
 AH3878'15.3 M (50.2 FT) S56W OF NASA DISK N GEOS RM 1982, 3.5 M (11.5 FT) N
 AH3878'OF NW CORNER OF SMALL BUILDING, 6.8 M (22.3 FT) E OF CENTER OF ROAD,
 AH3878'18.2 M (59.7 FT) WNW OF NASA DISK N.GEOS RM 1 1982, 7.1 M (23.3 FT) NE
 AH3878'OF NASA DISK 7130-D 1985 AND 87.2 M (286.1 FT) S24W OF NASA DISK
 AH3878'GODDARD GORF WEST JPL 4805 1992.  CONTACT IS MIKE PERRY.
 AH3878
 AH3878                          STATION RECOVERY (1998)
 AH3878
 AH3878'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 AH3878'3.9 MILES (6.3 KM) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 AH3878'OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 1.9 KM (1.2 MI) SOUTHEASTERLY
 AH3878'ALONG SPRINGFIELD ROAD, THENCE 0.16 KM (0.10 MI) NORTHERLY ALONG THE
 AH3878'GODDARD OPTICAL RESEARCH FACILITY ENTRANCE ROAD TO MARK ON RIGHT,  IN
 AH3878'TOP OF A 1.0 METER (3.3 FT) EQUILATERAL TRIANGULAR CONCRETE PILLAR,
 AH3878'WHICH PROJECTS 0.6 METER (2.0 FT) ABOVE GROUND, IN THE SAME PILLAR AS
 AH3878'NORTH GEOS PIER, 6.7 METERS (22.0 FT) EAST OF THE CENTERLINE OF
 AH3878'ENTRANCE ROAD, 2.8 METERS (9.2 FT) NORTH OF THE NORTHWEST CORNER OF A
 AH3878'7.6 METER SQUARE CONCRETE PAD WITH A 4X3 METER TEMPORARY BUILDING IN
 AH3878'THE NORTHEAST CORNER OF THE PAD, AND 3.1 METERS (10.1 FT) SOUTHEAST OF
 AH3878'AN ELECTRICAL PANEL BOX. NOTE--THERE ARE CRACKS IN THE PILLAR.
 AH3878
 AH3878                          STATION RECOVERY (2018)
 AH3878
 AH3878'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2018 (BTE)
 AH3878'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA3496 ***********************************************************************
 AA3496  DESIGNATION -  GODDARD GODE JPL 4006
 AA3496  PID         -  AA3496
 AA3496  STATE/COUNTY-  MD/PRINCE GEORGES
 AA3496  COUNTRY     -  US
 AA3496  USGS QUAD   -  LAUREL (2016)
 AA3496
 AA3496                         *CURRENT SURVEY CONTROL
 AA3496  ______________________________________________________________________
 AA3496* NAD 83(2011) POSITION- 39 01 18.18978(N) 076 49 36.57461(W)   ADJUSTED
 AA3496* NAD 83(2011) ELLIP HT-    15.786 (meters)        (06/27/12)   ADJUSTED
 AA3496* NAD 83(2011) EPOCH   -  2010.00
 AA3496* NAVD 88 ORTHO HEIGHT -    48.2   (meters)      158.    (feet) GPS OBS
 AA3496  ______________________________________________________________________
 AA3496  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA3496  GEOID HEIGHT    -         -32.74 (meters)                     GEOID93
 AA3496  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 AA3496  NAD 83(2011) X  -  1,130,774.430 (meters)                     COMP
 AA3496  NAD 83(2011) Y  - -4,831,255.025 (meters)                     COMP
 AA3496  NAD 83(2011) Z  -  3,994,200.522 (meters)                     COMP
 AA3496  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 AA3496
 AA3496  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA3496  Standards:
 AA3496         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA3496            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA3496  -------------------------------------------------------------------
 AA3496  NETWORK    0.18   0.47           0.08   0.07   0.24     -0.00885430
 AA3496  -------------------------------------------------------------------
 AA3496  Click here for local accuracies and other accuracy information.
 AA3496
 AA3496.This is a reference station for the GAITHERSBURG
 AA3496.National Continuously Operating Reference Station (GAIT).
 AA3496
 AA3496.The horizontal coordinates were established by GPS observations
 AA3496.and adjusted by the National Geodetic Survey in June 2012.
 AA3496
 AA3496.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA3496.been affixed to the stable North American tectonic plate. See 
 AA3496.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA3496
 AA3496.The horizontal coordinates are valid at the epoch date displayed above
 AA3496.which is a decimal equivalence of Year/Month/Day.
 AA3496
 AA3496.The orthometric height was determined by GPS observations and a
 AA3496.high-resolution geoid model.
 AA3496
 AA3496.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA3496.GEOID18 height accuracy estimate available here.
 AA3496
 AA3496.Click photographs - Photos may exist for this station.
 AA3496
 AA3496.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA3496
 AA3496.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA3496
 AA3496.The ellipsoidal height was determined by GPS observations
 AA3496.and is referenced to NAD 83.
 AA3496
 AA3496. The following values were computed from the NAD 83(2011) position.
 AA3496
 AA3496;                    North         East     Units Scale Factor Converg.
 AA3496;SPC MD       -   150,431.510   414,996.117   MT  0.99995308   +0 06 31.3
 AA3496;SPC MD       -   493,540.71  1,361,533.09   sFT  0.99995308   +0 06 31.3
 AA3496;UTM  18      - 4,320,774.472   341,854.669   MT  0.99990796   -1 09 01.6
 AA3496
 AA3496!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA3496!SPC MD       -   0.99999752  x   0.99995308  =   0.99995060
 AA3496!UTM  18      -   0.99999752  x   0.99990796  =   0.99990548
 AA3496
 AA3496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4185420774(NAD 83)
 AA3496
 AA3496|---------------------------------------------------------------------|
 AA3496| PID    Reference Object                     Distance      Geod. Az  |
 AA3496|                                                           dddmmss.s |
 AA3496| JV5895 NORTH GEOS PIER                     103.149 METERS 21339     |
 AA3496|---------------------------------------------------------------------|
 AA3496
 AA3496                          SUPERSEDED SURVEY CONTROL
 AA3496
 AA3496  NAD 83(2007)-  39 01 18.19009(N)    076 49 36.57524(W) AD(2002.00) 0
 AA3496  ELLIP H (02/10/07)   15.804  (m)                       GP(2002.00)    
 AA3496  ELLIP H (08/09/02)   15.799  (m)                       GP(       ) 3 2
 AA3496  NAD 83(1991)-  39 01 18.18987(N)    076 49 36.57484(W) AD(       ) 1
 AA3496  ELLIP H (10/26/94)   15.894  (m)                       GP(       ) 4 2
 AA3496
 AA3496.Superseded values are not recommended for survey control.
 AA3496
 AA3496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA3496.See file dsdata.pdf to determine how the superseded data were derived.
 AA3496
 AA3496_MARKER: Z = SEE DESCRIPTION
 AA3496_SETTING: 0 = UNSPECIFIED SETTING
 AA3496_SP_SET: UNSPECIFIED
 AA3496_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AA3496_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 AA3496+STABILITY: POSITION/ELEVATION WELL
 AA3496_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA3496+SATELLITE: SATELLITE OBSERVATIONS - 1994
 AA3496
 AA3496  HISTORY     - Date     Condition        Report By
 AA3496  HISTORY     - 1994     MONUMENTED       NASA
 AA3496
 AA3496                          STATION DESCRIPTION
 AA3496
 AA3496'DESCRIBED BY NAT AERO SPACE ADMIN 1994
 AA3496'NO TEXT
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9187 ***********************************************************************
 AA9187  DESIGNATION -  GODDARD GODE JPL 4006 L 1
 AA9187  PID         -  AA9187
 AA9187  STATE/COUNTY-  MD/PRINCE GEORGES
 AA9187  COUNTRY     -  US
 AA9187  USGS QUAD   -  LAUREL (2016)
 AA9187
 AA9187                         *CURRENT SURVEY CONTROL
 AA9187  ______________________________________________________________________
 AA9187* NAD 83(1992) POSITION- 39 01 18.18995(N) 076 49 36.57559(W)   ADJUSTED
 AA9187* NAD 83(1992) ELLIP HT-    15.997 (meters)        (09/29/95)   ADJUSTED
 AA9187* NAD 83(1992) EPOCH   -  1995.00
 AA9187* NAVD 88 ORTHO HEIGHT -    48.2   (meters)      158.    (feet) GPS OBS
 AA9187  ______________________________________________________________________
 AA9187  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA9187  GEOID HEIGHT    -        -32.741 (meters)                     GEOID93
 AA9187  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 AA9187  NAD 83(1992) X  -  1,130,774.444 (meters)                     COMP
 AA9187  NAD 83(1992) Y  - -4,831,255.186 (meters)                     COMP
 AA9187  NAD 83(1992) Z  -  3,994,200.659 (meters)                     COMP
 AA9187  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 AA9187  HORZ ORDER      -  A
 AA9187  ELLP ORDER      -  FIRST     CLASS I
 AA9187
 AA9187.The horizontal coordinates were established by GPS observations
 AA9187.and adjusted by the National Geodetic Survey in September 1995.
 AA9187
 AA9187.The horizontal coordinates are valid at the epoch date displayed above
 AA9187.which is a decimal equivalence of Year/Month/Day.
 AA9187
 AA9187.The orthometric height was determined by GPS observations and a
 AA9187.high-resolution geoid model.
 AA9187
 AA9187.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9187.GEOID18 height accuracy estimate available here.
 AA9187
 AA9187.Click photographs - Photos may exist for this station.
 AA9187
 AA9187.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9187
 AA9187.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9187
 AA9187.The ellipsoidal height was determined by GPS observations
 AA9187.and is referenced to NAD 83.
 AA9187
 AA9187. The following values were computed from the NAD 83(1992) position.
 AA9187
 AA9187;                    North         East     Units Scale Factor Converg.
 AA9187;SPC MD       -   150,431.515   414,996.093   MT  0.99995308   +0 06 31.3
 AA9187;SPC MD       -   493,540.73  1,361,533.02   sFT  0.99995308   +0 06 31.3
 AA9187;UTM  18      - 4,320,774.478   341,854.646   MT  0.99990796   -1 09 01.6
 AA9187
 AA9187!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9187!SPC MD       -   0.99999749  x   0.99995308  =   0.99995057
 AA9187!UTM  18      -   0.99999749  x   0.99990796  =   0.99990545
 AA9187
 AA9187_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4185420774(NAD 83)
 AA9187
 AA9187                          SUPERSEDED SURVEY CONTROL
 AA9187
 AA9187.No superseded survey control is available for this station.
 AA9187
 AA9187_MARKER: Z = SEE DESCRIPTION
 AA9187_SETTING: 0 = UNSPECIFIED SETTING
 AA9187_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9187_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AA9187_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9187+SATELLITE: SATELLITE OBSERVATIONS - 1993
 AA9187
 AA9187  HISTORY     - Date     Condition        Report By
 AA9187  HISTORY     - 1993     MONUMENTED       NASA
 AA9187
 AA9187                          STATION DESCRIPTION
 AA9187
 AA9187'DESCRIBED BY NAT AERO SPACE ADMIN 1993
 AA9187'THIS CORS STATION IS LOCATED AT THE GODDARD SPACE FLIGHT CENTER IN
 AA9187'GREENBELT MARYLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AF9647 ***********************************************************************
 AF9647  HT_MOD      -  This is a Height Modernization Survey Station.
 AF9647  CORS        -  This is a GPS Continuously Operating Reference Station.
 AF9647  DESIGNATION -  GODDARD SFC CORS MONUMENT
 AF9647  CORS_ID     -  GODE
 AF9647  PID         -  AF9647
 AF9647  STATE/COUNTY-  MD/PRINCE GEORGES
 AF9647  COUNTRY     -  US
 AF9647  USGS QUAD   -  LAUREL (2016)
 AF9647
 AF9647                         *CURRENT SURVEY CONTROL
 AF9647  ______________________________________________________________________
 AF9647* NAD 83(2011) POSITION- 39 01 18.18970(N) 076 49 36.57471(W)   ADJUSTED
 AF9647* NAD 83(2011) ELLIP HT-    15.781 (meters)        (04/??/25)   ADJUSTED
 AF9647* NAD 83(2011) EPOCH   -  2010.00
 AF9647* NAVD 88 ORTHO HEIGHT -    48.20  (meters)      158.1   (feet) GPS OBS
 AF9647  ______________________________________________________________________
 AF9647  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 AF9647  NAD 83(2011) X  -  1,130,774.428 (meters)                     COMP
 AF9647  NAD 83(2011) Y  - -4,831,255.023 (meters)                     COMP
 AF9647  NAD 83(2011) Z  -  3,994,200.518 (meters)                     COMP
 AF9647  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 AF9647
 AF9647  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AF9647  Standards:
 AF9647         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AF9647            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AF9647  -------------------------------------------------------------------
 AF9647  NETWORK    0.04   0.08           0.01   0.02   0.04      0.02708000
 AF9647  -------------------------------------------------------------------
 AF9647
 AF9647.The horizontal coordinates were established by GPS observations
 AF9647.and adjusted by the National Geodetic Survey in April 2025.
 AF9647
 AF9647.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AF9647.been affixed to the stable North American Tectonic Plate. 
 AF9647
 AF9647.The horizontal coordinates are valid at the epoch date displayed above
 AF9647.which is a decimal equivalence of Year/Month/Day.
 AF9647
 AF9647.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 AF9647.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 AF9647.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 AF9647.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 AF9647.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 AF9647.published epoch of 2010.00.
 AF9647
 AF9647.Additional information on MYCS is available at:
 AF9647.https://geodesy.noaa.gov/CORS/index.shtml
 AF9647
 AF9647.The orthometric height was determined by GPS observations and a
 AF9647.high-resolution geoid model using precise GPS observation and
 AF9647.processing techniques.
 AF9647
 AF9647.Significant digits in the geoid height do not necessarily reflect accuracy.
 AF9647.GEOID18 height accuracy estimate available here.
 AF9647
 AF9647.Click photographs - Photos may exist for this station.
 AF9647
 AF9647.The XYZ, and position/ellipsoidal ht. are equivalent.
 AF9647
 AF9647.The Laplace correction was computed from DEFLEC18 derived deflections.
 AF9647
 AF9647.The ellipsoidal height was determined by GPS observations
 AF9647.and is referenced to NAD 83.
 AF9647
 AF9647. The following values were computed from the NAD 83(2011) position.
 AF9647
 AF9647;                    North         East     Units Scale Factor Converg.
 AF9647;SPC MD       -   150,431.507   414,996.114   MT  0.99995308   +0 06 31.3
 AF9647;SPC MD       -   493,540.70  1,361,533.08   sFT  0.99995308   +0 06 31.3
 AF9647;UTM  18      - 4,320,774.470   341,854.667   MT  0.99990796   -1 09 01.6
 AF9647
 AF9647!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AF9647!SPC MD       -   0.99999752  x   0.99995308  =   0.99995060
 AF9647!UTM  18      -   0.99999752  x   0.99990796  =   0.99990548
 AF9647
 AF9647_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4185420774(NAD 83)
 AF9647
 AF9647                          SUPERSEDED SURVEY CONTROL
 AF9647
 AF9647  NAD 83(2011)-  39 01 18.18970(N)    076 49 36.57472(W) AD(2010.00) A
 AF9647  ELLIP H (05/??/20)   15.784  (m)                       GP(2010.00) 4 1
 AF9647  NAD 83(2011)-  39 01 18.18973(N)    076 49 36.57472(W) AD(2010.00) A
 AF9647  ELLIP H (06/??/19)   15.784  (m)                       GP(2010.00) 4 1
 AF9647  NAD 83(2011)-  39 01 18.18974(N)    076 49 36.57468(W) AD(2010.00) A
 AF9647  ELLIP H (08/??/11)   15.784  (m)                       GP(2010.00) 4 1
 AF9647  NAD 83(2007)-  39 01 18.18995(N)    076 49 36.57530(W) AD(2002.00) 0
 AF9647  NAD 83(CORS)-  39 01 18.18995(N)    076 49 36.57530(W) AD(2002.00) A
 AF9647  ELLIP H (03/??/02)   15.806  (m)                       GP(2002.00) 4 1
 AF9647  NAD 83(CORS)-  39 01 18.18994(N)    076 49 36.57545(W) AD(1997.00) A
 AF9647  ELLIP H (07/??/96)   15.805  (m)                       GP(1997.00) 4 1
 AF9647  NAD 83(CORS)-  39 01 18.18999(N)    076 49 36.57543(W) AD(1996.00) A
 AF9647  ELLIP H (07/??/96)   15.806  (m)                       GP(1996.00) 4 1
 AF9647  NAD 83(CORS)-  39 01 18.18994(N)    076 49 36.57545(W) AD(1997.00) A
 AF9647  ELLIP H (07/??/95)   15.805  (m)                       GP(1997.00) 4 1
 AF9647  NAVD 88 (06/21/22)   48.1    (m)  UNKNOWN  model used  GPS OBS        
 AF9647  NAVD 88 (02/12/02)   48.17   (m)  GEOID99  model used  GPS OBS        
 AF9647  NAVD 88 (08/03/00)   48.2    (m)  GEOID99  model used  GPS OBS        
 AF9647
 AF9647.Superseded values are not recommended for survey control.
 AF9647
 AF9647.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AF9647.See file dsdata.pdf to determine how the superseded data were derived.
 AF9647
 AF9647_STAMPING: UNKNOWN
 AF9647
 AF9647  HISTORY     - Date     Condition        Report By
 AF9647  HISTORY     - UNK      MONUMENTED       JPL
 AF9647
 AF9647                          STATION DESCRIPTION
 AF9647
 AF9647'THIS MONUMENT IS ASSOCIATED WITH STATION 'GODE'
 AF9647'AND IS A PART OF THE NOAA CORS NETWORK (NCN). LATEST INFORMATION
 AF9647'INCLUDING POSITIONS AND VEOCITIES ARE AVAILABLE IN THE COORDINATE
 AF9647'AND LOG FILES ACCESSIBLE AT:
 AF9647'https://geodesy.noaa.gov/CORS/index.shtml
 AF9647'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AF9646 ***********************************************************************
 AF9646  CORS        -  This is a GPS Continuously Operating Reference Station.
 AF9646  DESIGNATION -  GODDARD SPACE CTR CORS ARP
 AF9646  CORS_ID     -  GODE
 AF9646  PID         -  AF9646
 AF9646  STATE/COUNTY-  MD/PRINCE GEORGES
 AF9646  COUNTRY     -  US
 AF9646  USGS QUAD   -  LAUREL (2016)
 AF9646
 AF9646                         *CURRENT SURVEY CONTROL
 AF9646  ______________________________________________________________________
 AF9646* NAD 83(2011) POSITION- 39 01 18.18970(N) 076 49 36.57471(W)   ADJUSTED
 AF9646* NAD 83(2011) ELLIP HT-    15.843 (meters)        (04/??/25)   ADJUSTED
 AF9646* NAD 83(2011) EPOCH   -  2010.00
 AF9646  ______________________________________________________________________
 AF9646  GEOID HEIGHT    -        -32.380 (meters)                     GEOID18
 AF9646  NAD 83(2011) X  -  1,130,774.438 (meters)                     COMP
 AF9646  NAD 83(2011) Y  - -4,831,255.070 (meters)                     COMP
 AF9646  NAD 83(2011) Z  -  3,994,200.556 (meters)                     COMP
 AF9646
 AF9646  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AF9646  Standards:
 AF9646         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AF9646            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AF9646  -------------------------------------------------------------------
 AF9646  NETWORK    0.04   0.08           0.01   0.02   0.04      0.02708000
 AF9646  -------------------------------------------------------------------
 AF9646
 AF9646.The coordinates were established by GPS observations
 AF9646.and adjusted by the National Geodetic Survey in April 2025.
 AF9646
 AF9646.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AF9646.been affixed to the stable North American Tectonic Plate. 
 AF9646
 AF9646.The coordinates are valid at the epoch date displayed above
 AF9646.which is a decimal equivalence of Year/Month/Day.
 AF9646
 AF9646.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 AF9646.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 AF9646.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 AF9646.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 AF9646.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 AF9646.published epoch of 2010.00.
 AF9646
 AF9646.Additional information on MYCS is available at:
 AF9646.https://geodesy.noaa.gov/CORS/index.shtml
 AF9646
 AF9646.Significant digits in the geoid height do not necessarily reflect accuracy.
 AF9646.GEOID18 height accuracy estimate available here.
 AF9646
 AF9646.The PID for the CORS L1 Phase Center is AC7770.
 AF9646
 AF9646.Click photographs - Photos may exist for this station.
 AF9646
 AF9646.The XYZ, and position/ellipsoidal ht. are equivalent.
 AF9646
 AF9646.The ellipsoidal height was determined by GPS observations
 AF9646.and is referenced to NAD 83.
 AF9646
 AF9646. The following values were computed from the NAD 83(2011) position.
 AF9646
 AF9646;                    North         East     Units Scale Factor Converg.
 AF9646;SPC MD       -   150,431.507   414,996.114   MT  0.99995308   +0 06 31.3
 AF9646;SPC MD       -   493,540.70  1,361,533.08   sFT  0.99995308   +0 06 31.3
 AF9646;UTM  18      - 4,320,774.470   341,854.667   MT  0.99990796   -1 09 01.6
 AF9646
 AF9646!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AF9646!SPC MD       -   0.99999751  x   0.99995308  =   0.99995059
 AF9646!UTM  18      -   0.99999751  x   0.99990796  =   0.99990547
 AF9646
 AF9646_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4185420774(NAD 83)
 AF9646
 AF9646                          SUPERSEDED SURVEY CONTROL
 AF9646
 AF9646  NAD 83(2011)-  39 01 18.18970(N)    076 49 36.57472(W) AD(2010.00) c
 AF9646  ELLIP H (05/??/20)   15.845  (m)                       GP(2010.00) c c
 AF9646  NAD 83(2011)-  39 01 18.18973(N)    076 49 36.57472(W) AD(2010.00) c
 AF9646  ELLIP H (06/??/19)   15.845  (m)                       GP(2010.00) c c
 AF9646  NAD 83(2011)-  39 01 18.18974(N)    076 49 36.57468(W) AD(2010.00) c
 AF9646  NAD 83(2011)-  39 01 18.18974(N)    076 49 36.57468(W) AD(2010.00) c
 AF9646  ELLIP H (08/??/11)   15.845  (m)                       GP(2010.00) c c
 AF9646  NAD 83(2007)-  39 01 18.18995(N)    076 49 36.57530(W) AD(2002.00) c
 AF9646  NAD 83(CORS)-  39 01 18.18995(N)    076 49 36.57530(W) AD(2002.00) c
 AF9646  ELLIP H (03/??/02)   15.868  (m)                       GP(2002.00) c c
 AF9646  NAD 83(CORS)-  39 01 18.18994(N)    076 49 36.57545(W) AD(1997.00) c
 AF9646  ELLIP H (07/??/96)   15.866  (m)                       GP(1997.00) c c
 AF9646  NAD 83(CORS)-  39 01 18.18999(N)    076 49 36.57543(W) AD(1996.00) c
 AF9646  ELLIP H (07/??/96)   15.867  (m)                       GP(1996.00) c c
 AF9646  NAD 83(CORS)-  39 01 18.18994(N)    076 49 36.57545(W) AD(1997.00) c
 AF9646  ELLIP H (07/??/95)   15.866  (m)                       GP(1997.00) c c
 AF9646
 AF9646.Superseded values are not recommended for survey control.
 AF9646
 AF9646.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AF9646.See file dsdata.pdf to determine how the superseded data were derived.
 AF9646
 AF9646_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 AF9646
 AF9646                          STATION DESCRIPTION
 AF9646
 AF9646'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 AF9646'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 AF9646'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 AF9646'AND LOG FILES ACCESSIBLE AT:
 AF9646'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2352 ***********************************************************************
 HV2352  DESIGNATION -  GODDING RESET
 HV2352  PID         -  HV2352
 HV2352  STATE/COUNTY-  MD/PRINCE GEORGES
 HV2352  COUNTRY     -  US
 HV2352  USGS QUAD   -  ALEXANDRIA (2019)
 HV2352
 HV2352                         *CURRENT SURVEY CONTROL
 HV2352  ______________________________________________________________________
 HV2352* NAD 83(2011) POSITION- 38 48 08.99792(N) 077 00 33.51320(W)   ADJUSTED
 HV2352* NAD 83(2011) ELLIP HT-    20.938 (meters)        (06/27/12)   ADJUSTED
 HV2352* NAD 83(2011) EPOCH   -  2010.00
 HV2352* NAVD 88 ORTHO HEIGHT -    53.181 (meters)      174.48  (feet) ADJUSTED
 HV2352  ______________________________________________________________________
 HV2352  GEOID HEIGHT    -        -32.282 (meters)                     GEOID18
 HV2352  NAD 83(2011) X  -  1,118,818.699 (meters)                     COMP
 HV2352  NAD 83(2011) Y  - -4,849,731.049 (meters)                     COMP
 HV2352  NAD 83(2011) Z  -  3,975,267.277 (meters)                     COMP
 HV2352  LAPLACE CORR    -         -2.93  (seconds)                    DEFLEC18
 HV2352  DYNAMIC HEIGHT  -         53.152 (meters)      174.38  (feet) COMP
 HV2352  MODELED GRAVITY -    980,085.6   (mgal)                       NAVD 88
 HV2352
 HV2352  VERT ORDER      -  SECOND    CLASS 0
 HV2352
 HV2352  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV2352  Standards:
 HV2352         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV2352            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV2352  -------------------------------------------------------------------
 HV2352  NETWORK    0.65   1.41           0.29   0.24   0.72      0.00842960
 HV2352  -------------------------------------------------------------------
 HV2352  Click here for local accuracies and other accuracy information.
 HV2352
 HV2352.The horizontal coordinates were established by GPS observations
 HV2352.and adjusted by the National Geodetic Survey in June 2012.
 HV2352
 HV2352.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV2352.been affixed to the stable North American tectonic plate. See 
 HV2352.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV2352
 HV2352.The horizontal coordinates are valid at the epoch date displayed above
 HV2352.which is a decimal equivalence of Year/Month/Day.
 HV2352
 HV2352.The orthometric height was determined by differential leveling and
 HV2352.adjusted by the NATIONAL GEODETIC SURVEY
 HV2352.in June 1991.
 HV2352
 HV2352.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2352.GEOID18 height accuracy estimate available here.
 HV2352
 HV2352.Click photographs - Photos may exist for this station.
 HV2352
 HV2352.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV2352
 HV2352.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV2352
 HV2352.The ellipsoidal height was determined by GPS observations
 HV2352.and is referenced to NAD 83.
 HV2352
 HV2352.The dynamic height is computed by dividing the NAVD 88
 HV2352.geopotential number by the normal gravity value computed on the
 HV2352.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2352.degrees latitude (g = 980.6199 gals.).
 HV2352
 HV2352.The modeled gravity was interpolated from observed gravity values.
 HV2352
 HV2352. The following values were computed from the NAD 83(2011) position.
 HV2352
 HV2352;                    North         East     Units Scale Factor Converg.
 HV2352;SPC MD       -   126,082.086   399,191.378   MT  0.99995066   -0 00 21.0
 HV2352;SPC MD       -   413,654.31  1,309,680.38   sFT  0.99995066   -0 00 21.0
 HV2352;SPC VA N     - 2,127,128.094 3,629,479.705   MT  0.99995358   +0 55 49.3
 HV2352;SPC VA N     - 6,978,752.76 11,907,718.00   sFT  0.99995358   +0 55 49.3
 HV2352;UTM  18      - 4,296,777.694   325,519.972   MT  0.99997489   -1 15 33.9
 HV2352
 HV2352!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV2352!SPC MD       -   0.99999671  x   0.99995066  =   0.99994738
 HV2352!SPC VA N     -   0.99999671  x   0.99995358  =   0.99995029
 HV2352!UTM  18      -   0.99999671  x   0.99997489  =   0.99997160
 HV2352
 HV2352:                Primary Azimuth Mark                     Grid Az
 HV2352:SPC MD       -  GODDING AZ MK                            279 04 43.9
 HV2352:SPC VA N     -  GODDING AZ MK                            278 08 33.6
 HV2352:UTM  18      -  GODDING AZ MK                            280 19 56.8
 HV2352
 HV2352_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2551996777(NAD 83)
 HV2352
 HV2352|---------------------------------------------------------------------|
 HV2352| PID    Reference Object                     Distance      Geod. Az  |
 HV2352|                                                           dddmmss.s |
 HV2352| HV2353 GODDING RM 3                         11.535 METERS 07806     |
 HV2352| HV2351 GODDING RM 4                         15.854 METERS 15845     |
 HV2352| DE5054 GODDING AZ MK                                      2790422.9 |
 HV2352| HV4608 ALEXANDRIA EPIS THEO SEM SPIRE      APPROX. 7.4 KM 2853403.6 |
 HV2352|---------------------------------------------------------------------|
 HV2352
 HV2352                          SUPERSEDED SURVEY CONTROL
 HV2352
 HV2352  NAD 83(2007)-  38 48 08.99882(N)    077 00 33.51399(W) AD(2002.00) 0
 HV2352  ELLIP H (02/10/07)   20.950  (m)                       GP(2002.00)    
 HV2352  ELLIP H (08/09/02)   20.970  (m)                       GP(       ) 4 2
 HV2352  NAD 83(1991)-  38 48 08.99888(N)    077 00 33.51463(W) AD(       ) 1
 HV2352  ELLIP H (06/29/94)   20.988  (m)                       GP(       ) 4 1
 HV2352  NAD 83(1991)-  38 48 08.99890(N)    077 00 33.51462(W) AD(       ) 1
 HV2352  ELLIP H (04/04/94)   20.988  (m)                       GP(       ) 4 1
 HV2352  NAD 83(1991)-  38 48 08.99896(N)    077 00 33.51451(W) AD(       ) 1
 HV2352  ELLIP H (12/31/92)   20.988  (m)                       GP(       ) 4 2
 HV2352  NAD 83(1991)-  38 48 08.99729(N)    077 00 33.51577(W) AD(       ) 1
 HV2352  ELLIP H (01/27/92)   20.924  (m)                       GP(       ) 4 1
 HV2352  NAD 83(1986)-  38 48 08.99718(N)    077 00 33.52783(W) AD(       ) 1
 HV2352  NAD 27      -  38 48 08.58981(N)    077 00 34.61258(W) AD(       ) 1
 HV2352  USSD        -  38 48 08.92400(N)    077 00 34.43200(W) AD(       ) 3
 HV2352  NAVD 88              53.18   (m)          174.5    (f) LEVELING    3  
 HV2352  NAVD 88              53.18   (m)          174.5    (f) LEVELING    3  
 HV2352  NGVD 29              53.44   (m)          175.3    (f) LEVELING    3  
 HV2352  NGVD 29 (11/26/84)   53.445  (m)          175.34   (f) ADJUSTED    2 0
 HV2352
 HV2352.Superseded values are not recommended for survey control.
 HV2352
 HV2352.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2352.See file dsdata.pdf to determine how the superseded data were derived.
 HV2352
 HV2352_MARKER: DS = TRIANGULATION STATION DISK
 HV2352_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2352_STAMPING: GODDING 1901 1957
 HV2352_MARK LOGO: CGS
 HV2352_PROJECTION: FLUSH
 HV2352_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV2352_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2352+STABILITY: SURFACE MOTION
 HV2352_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV2352+SATELLITE: SATELLITE OBSERVATIONS - August 15, 2016
 HV2352
 HV2352  HISTORY     - Date     Condition        Report By
 HV2352  HISTORY     - 1957     MONUMENTED       CGS
 HV2352  HISTORY     - 1970     GOOD             NGS
 HV2352  HISTORY     - 1970     GOOD             NGS
 HV2352  HISTORY     - 19890531 GOOD             MDSHA
 HV2352  HISTORY     - 19910907 GOOD             WHGAI
 HV2352  HISTORY     - 19920401 GOOD             NGS
 HV2352  HISTORY     - 19920710 GOOD             NOS
 HV2352  HISTORY     - 19920921 GOOD             HOBBS
 HV2352  HISTORY     - 19930331 GOOD             MSI
 HV2352  HISTORY     - 19970416 GOOD             DMW
 HV2352  HISTORY     - 19991013 GOOD             GEOMET
 HV2352  HISTORY     - 20030331 GOOD             DMW
 HV2352  HISTORY     - 20071116 GOOD             PB
 HV2352  HISTORY     - 20100224 GOOD             USACE
 HV2352  HISTORY     - 20120923 GOOD             WOOLPT
 HV2352  HISTORY     - 20131202 GOOD             INDIV
 HV2352  HISTORY     - 20160815 GOOD             INDIV
 HV2352
 HV2352                          STATION DESCRIPTION
 HV2352
 HV2352'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (FAR)
 HV2352'THE SURFACE STATION MARK HAS BEEN DESTROYED, THE UNDERGROUND
 HV2352'STATION MARK WAS RECOVERED AS DESCRIBED, REFERENCE MARK NUMBER 3,
 HV2352'REFERENCE MARK NUMBER 4 AND AN AZIMUTH MARK WERE SET.  A COMPLETE
 HV2352'NEW DESCRIPTION FOLLOWS.
 HV2352'
 HV2352'THE STATION IS APPROXIMATELY 3 MILES EAST OF THE WASHINGTON
 HV2352'MASONIC MEMORIAL TEMPLE, 2 MILES NORTHEAST OF JONES POINT,
 HV2352'3 MILES SOUTH OF THE MAIN ENTRANCE TO BOLLING FIELD AND ON
 HV2352'PROPERTY OWNED BY THE ST. ELIZABETH HOSPITAL.
 HV2352'
 HV2352'TO REACH FROM THE U.S. CAPITOL BUILDING AT INDEPENDENCE AND
 HV2352'SOUTH CAPITOL STREETS, IN WASHINGTON, D.C., GO SOUTH ON SOUTH
 HV2352'CAPITOL STREET FOR 1.4 MILES TO THE CENTER OF THE BRIDGE OVER
 HV2352'THE ANACOSTIA RIVER, CONTINUE ON SOUTH CAPITOL STREET FOR 3.7
 HV2352'MILES TO A HOWARD JOHNSONS RESTAURANT ON THE RIGHT, CONTINUE
 HV2352'STRAIGHT AHEAD ON INDIAN HEAD HIGHWAY FOR 1.1 MILES TO A TRAFFIC
 HV2352'LIGHT AT OXON HILL ROAD, TURN RIGHT ON OXON HILL ROAD FOR 0.2
 HV2352'MILE TO A CINDER ROAD RIGHT, TURN RIGHT ON THE CINDER ROAD FOR
 HV2352'0.1 MILE THEN TURN LEFT ON THE CINDER ROAD FOR 0.3 MILE TO
 HV2352'THE OLD BRICK HOUSE AT THE END OF THE ROAD AND THE STATION.
 HV2352'
 HV2352'STATION MARKS ARE STANDARD DISKS STAMPED GODDING 1901 1957.  THE
 HV2352'SURFACE DISK IS SET IN A SQUARE CONCRETE POST WHICH IS FLUSH WITH
 HV2352'THE SURFACE OF THE GROUND.  IT IS 47 FEET NORTHWEST OF THE
 HV2352'SOUTHWEST CORNER OF THE BRICK HOUSE, 24 FEET WEST OF THE
 HV2352'NORTHWEST CORNER OF THE BRICK HOUSE AND 5.5 FEET EAST OF A
 HV2352'FENCE LINE.
 HV2352'
 HV2352'REFERENCE MARK NUMBER 3, A STANDARD DISK STAMPED GODDING 1901
 HV2352'NO 3 1957, IS SET IN A SQUARE CONCRETE POST WHICH IS FLUSH WITH
 HV2352'THE SURFACE OF THE GROUND.  IT IS 12.5 FEET EAST-NORTHEAST OF THE
 HV2352'NORTHWEST CORNER OF THE BRICK HOUSE AND 1 FOOT WEST OF THE BACK
 HV2352'PORCH STEPS.
 HV2352'
 HV2352'REFERENCE MARK NUMBER 4, A STANDARD DISK STAMPED GODDING 1901
 HV2352'NO 4 1957, IS SET IN A SQUARE CONCRETE POST WHICH IS FLUSH WITH
 HV2352'THE SURFACE OF THE GROUND.  IT IS 2.5 FEET SOUTHWEST OF THE
 HV2352'SOUTHWEST CORNER OF THE FRONT PORCH STEPS.
 HV2352'
 HV2352'AZIMUTH MARK IS A STANDARD DISK STAMPED GODDING RESET 1901 1957,
 HV2352'SET IN A SQUARE CONCRETE POST WHICH PROJECTS 6 INCHES.  IT IS IN THE
 HV2352'NORTHWEST CORNER OF A CULTIVATED FIELD, 62 FEET NORTH OF THE CENTER
 HV2352'OF THE CINDER ROAD AND APPROXIMATELY 100 FEET SOUTH OF THE WATERS
 HV2352'EDGE.  A STANDARD WITNESS POST WAS SET 2 FEET NORTH OF THE MARK.
 HV2352'
 HV2352'TO REACH THE AZIMUTH MARK FROM THE STATION, FOLLOW THE DRIVEWAY
 HV2352'TOWARDS THE BARN FOR 0.05 MILE, TURN SHARP LEFT AND FOLLOW THE
 HV2352'CINDER ROAD DOWN HILL FOR 0.4 MILE TO SOME FARM BUILDINGS ON THE
 HV2352'LEFT, CONTINUE STRAIGHT AHEAD FOR 0.3 MILE TO THE END OF THE
 HV2352'FIELD ON THE RIGHT AND THE AZIMUTH MARK AT THE NORTHWEST CORNER
 HV2352'OF THE FIELD.
 HV2352
 HV2352                          STATION RECOVERY (1970)
 HV2352
 HV2352'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV2352'STATION MARK, REFERENCE MARKS 3 AND 4 WERE RECOVERED AND FOUND IN
 HV2352'GOOD CONDITION.  A DISTANCE OF 0.014 METERS DIFFERENCE WAS
 HV2352'MEASURED TO REFERENCE MARK 3.  THERE WAS NO EVIDENCE OF MOVEMENT
 HV2352'AT THE MARKS.  THE AZIMUTH MARK WAS SEARCHED FOR AND COULD NOT BE
 HV2352'FOUND.  DUE TO CHANGES A COMPLETE NEW DESCRIPTION FOLLOWS.
 HV2352'
 HV2352'THE STATION IS APPROXIMATELY 3 MILES EAST OF THE WASHINGTON
 HV2352'MASONIC MEMORIAL TEMPLE, 2 MILES NORTHEAST OF JONES POINT, 3 MILES
 HV2352'SOUTH OF THE MAIN ENTRANCE TO BOLLING AIR FORCE BASE AND ON
 HV2352'PROPERTY OWNED BY THE SAINT ELIZABETH HOSPITAL.  PERMISSION
 HV2352'OBTAINED FROM THE U.S. DEPARTMENT OF INTERIOR, NATIONAL PARK
 HV2352'SERVICE, NATIONAL CAPITAL PARKS-EAST, 5210 INDIAN HEAD HIGHWAY,
 HV2352'OXON HILL, MARYLAND 20021.
 HV2352'
 HV2352'TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY 495
 HV2352'(BELTWAY) AND STATE HIGHWAY 210 (INDIAN HEAD HIGHWAY), ABOUT
 HV2352'1 MILE WEST OF OXON HILL, GO SOUTH ON STATE HIGHWAY 210 FOR
 HV2352'0.15 MILE TO A CROSSROAD.  TURN RIGHT AND GO WEST ON OXON HILL
 HV2352'ROAD FOR 0.2 MILE TO A SIDE ROAD ON THE RIGHT AND A SIGN OXON
 HV2352'HILL CHILDRENS FARM.  TURN RIGHT AND GO NORTH FOR 0.1 MILE
 HV2352'CROSSING OVER THE BELTWAY TO A SIDE ROAD LEFT.  TURN LEFT AND
 HV2352'GO WEST FOR 0.1 MILE TO A BOARD FENCE AND THE ENTRANCE TO THE
 HV2352'FARM.  PASS THROUGH THE GATE AND GO WESTERLY ALONG THE
 HV2352'RIDGE FOR 0.2 MILE TO A RED BRICK HOUSE AND STATION AS
 HV2352'DESCRIBED.
 HV2352'
 HV2352'THE STATION MARK IS A STANDARD DISK, STAMPED GODDING 1901 1957,
 HV2352'IS SET IN THE TOP OF A 10-INCH SQUARE CONCRETE POST THAT IS SET
 HV2352'FLUSH WITH THE GROUND.  IT IS 46.5 FEET NORTHWEST OF THE SOUTHWEST
 HV2352'CORNER OF HOUSE, 24.4 FEET WEST OF THE NORTHWEST CORNER OF THE
 HV2352'HOUSE AND 25 FEET SOUTH-SOUTHEAST OF THE SOUTH EDGE OF HEDGE
 HV2352'ROW.
 HV2352'
 HV2352'REFERENCE MARK 3 IS A STANDARD DISK STAMPED GODDING 1901 NO 3
 HV2352'1957, IS SET IN THE TOP OF A 10-INCH SQUARE CONCRETE POST THAT IS
 HV2352'SET FLUSH WITH THE GROUND.  IT IS 24 FEET WEST-NORTHWEST OF THE
 HV2352'NORTHEAST CORNER OF PORCH, 12.5 FEET EAST-NORTHEAST OF THE
 HV2352'NORTHWEST CORNER OF THE PORCH AND 1.5 FEET WEST OF THE WEST SIDE
 HV2352'OF THE STEPS TO THE HOUSE.
 HV2352'
 HV2352'REFERENCE MARK 4 IS A STANDARD DISK STAMPED GODDING 1901 NO 4
 HV2352'1957, SET IN THE TOP OF A 10-INCH SQUARE CONCRETE POST THAT IS
 HV2352'SET FLUSH WITH THE GROUND.  IT IS 16.5 FEET WEST OF THE WEST SIDE
 HV2352'OF THE STEPS LEADING INTO THE HOUSE, 7.5 FEET SOUTH-SOUTHWEST OF
 HV2352'THE SOUTHWEST CORNER OF THE BRICK HOUSE AND 2.5 FEET WEST OF THE
 HV2352'SOUTHWEST CORNER OF THE PORCH.
 HV2352'
 HV2352'HEIGHT OF LIGHT ABOVE STATION MARK 38.25 FEET.
 HV2352'
 HV2352'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV2352'1-1/2 MILES WEST OF OXON HILL.
 HV2352
 HV2352                          STATION RECOVERY (1970)
 HV2352
 HV2352'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 HV2352'1.1 MI W FROM OXON HILL.
 HV2352'DUE TO CHANGES IN THE AREA A NEW DESCRIPTION FOLLOWS.  0.15 MILE
 HV2352'SOUTH ALONG STATE HIGHWAY 210 FROM THE JUNCTION OF INTERSTATE
 HV2352'HIGHWAY 495 AND STATE HIGHWAY 210 ABOUT 1 MILE WEST OF OXON HILL,
 HV2352'THENCE 0.2 MILE WEST ALONG OXON HILL ROAD, THENCE NORTH 0.1 MILE
 HV2352'ON A PAVED ROAD, THENCE WESTERLY 0.3 MILE ALONG A PAVED ROAD AT
 HV2352'THE OXON HILL CHILDRENS FARM, 46.5 FEET NORTHWEST OF THE SOUTHWEST
 HV2352'CORNER OF A LARGE HOUSE, 24.4 FEET WEST OF THE NORTHWEST CORNER
 HV2352'OF THE HOUSE, AND SET IN THE TOP OF A 10-INCH SQUARE CONCRETE
 HV2352'POST THAT IS FLUSH WITH THE GROUND.
 HV2352
 HV2352                          STATION RECOVERY (1989)
 HV2352
 HV2352'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1989
 HV2352'RECOVERED IN GOOD CONDITION.
 HV2352
 HV2352                          STATION RECOVERY (1991)
 HV2352
 HV2352'RECOVERY NOTE BY W H GORDON ASSC 1991
 HV2352'RECOVERED IN GOOD CONDITION.
 HV2352
 HV2352                          STATION RECOVERY (1992)
 HV2352
 HV2352'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 HV2352'STATION IS LOCATED ABOUT 2.4 KM (1.49 MI) WEST OF OXON HILL, 3.2 KM
 HV2352'(1.99 MI) NORTHEAST OF JONES POINT, 4.8 KM (2.98 MI) SOUTH OF BOLLING
 HV2352'AIR FORCE BASE, 5.6 KM (3.48 MI) EAST OF THE WASHINGTON MASONIC
 HV2352'MEMORIAL TEMPLE, 3.2 KM (1.99 MI) NORTHEAST OF JONES POINT, ON
 HV2352'PROPERTY OF THE U.S. DEPARTMENT OF THE INTERIOR, NATIONAL PARK
 HV2352'SERVICE, NATIONAL CAPITAL PARKS EAST, 5210 INDIAN HEAD HIGHWAY, OXON
 HV2352'HILL, MARYLAND, 20021.  NOTE--STAION IS LOCATED AT THE OXON HILL
 HV2352'FARM. CONTACT WAS JIM ROSENSTOLL, TELEPHONE 301-839-0211.  CAUTION
 HV2352'MUST BE OBSERVED ALONG CINDER ROAD DUE TO CHILDREN IN AREA.  PARK
 HV2352'CLOSES AT 5PM, NOTIFY IN ADVANCE OF WORK.
 HV2352'TO REACH THE STATION FROM THE INTERSTATE 495 (CAPITOL BELTWAY), STATE
 HV2352'ROUTE 210 (INDIAN HEAD HIGHWAY) INTERCHANGE, EXIT 3, LOCATED ABOUT
 HV2352'4.8 KM (2.98 MI) WEST OF OXON HILL, GO SOUTH ON ROUTE 210 FOR 0.24 KM
 HV2352'(0.15 MI) TO JUNCTION OF OXON HILL ROAD.  TURN RIGHT, WEST, ON OXON
 HV2352'HILL ROAD FOR 0.24 KM (0.15 MI) TO AN ASPHALT ROAD ON THE RIGHT
 HV2352'LEADING NORTH OVER 495 BELTWAY AND AT A OXON HILL FARM SIGN.  TURN
 HV2352'RIGHT, NORTH, ON THE ASPHALT ROAD FOR 0.16 KM (0.10 MI) TO A ROAD ON
 HV2352'THE LEFT.  TURN LEFT, WEST, ON ASPHALT ROAD FOR 0.16 KM (0.10 MI) TO
 HV2352'A BOARD FENCE AND THE NORTH 1OF2 GATES.  PASS THROUGH THE NORTH GATE,
 HV2352'WEST-NORTHWEST, ON A CINDER ROAD FOR 0.48 KM (0.30 MI) THROUGH THE
 HV2352'OXON HILL FARM, TO END OF ROAD AT A TWO STORY WHITE BRICK FARM HOUSE
 HV2352'AND THE STATION AS DESCRIBED.
 HV2352'STATION IS 14.17 M (46.49 FT) NORTHWEST FROM THE SOUTHWEST CORNER OF
 HV2352'THE HOUSE, 7.43 KM (4.62 MI) WEST FROM THE NORTHWEST CORNER OF THE
 HV2352'HOUSE, 1.6 M (5.25 FT) EAST FROM A FENCELINE AND FLUSH WITH THE
 HV2352'GROUND SURFACE.
 HV2352
 HV2352                          STATION RECOVERY (1992)
 HV2352
 HV2352'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 HV2352'RECOVERED IN GOOD CONDITION.
 HV2352
 HV2352                          STATION RECOVERY (1992)
 HV2352
 HV2352'RECOVERY NOTE BY HOBBS AND ASSOCIATES 1992
 HV2352'RECOVERED IN GOOD CONDITION.
 HV2352
 HV2352                          STATION RECOVERY (1993)
 HV2352
 HV2352'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV2352'RECOVERED IN GOOD CONDITION.
 HV2352
 HV2352                          STATION RECOVERY (1997)
 HV2352
 HV2352'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 HV2352'RECOVERED AS DESCRIBED.
 HV2352
 HV2352                          STATION RECOVERY (1999)
 HV2352
 HV2352'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (KO)
 HV2352'PARTIALLY OBSTRUCTED TO THE SOUTH.  GOOD FOR GPS.
 HV2352
 HV2352                          STATION RECOVERY (2003)
 HV2352
 HV2352'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2003 (MEA)
 HV2352'RECOVERED IN GOOD CONDITION.
 HV2352
 HV2352                          STATION RECOVERY (2007)
 HV2352
 HV2352'RECOVERY NOTE BY PBS&J 2007
 HV2352'RECOVERED IN GOOD CONDITION.
 HV2352
 HV2352                          STATION RECOVERY (2010)
 HV2352
 HV2352'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2010 (JCR)
 HV2352'RECOVERED IN GOOD CONDITION.  MARK IS APPROXIMATELY 176.95' ABOVE THE
 HV2352'CONSTRUCTION/HYDRAULIC DATUM FOR THE FOREST HEIGHTS, MD LEVEE PROJECT
 HV2352'BASED ON RTK GPS SURVEYS BY USACE BALTIMORE DISTRICT IN FEBRUARY 2010.
 HV2352'
 HV2352
 HV2352                          STATION RECOVERY (2012)
 HV2352
 HV2352'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 HV2352'RECOVERED IN GOOD CONDITION.
 HV2352
 HV2352                          STATION RECOVERY (2013)
 HV2352
 HV2352'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2013 (WRA)
 HV2352'DESCRIPTION IS ADEQUATE
 HV2352
 HV2352                          STATION RECOVERY (2016)
 HV2352
 HV2352'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2016 (WRA)
 HV2352'RECOVERED AS DESCRIBED
 HV2352'DESCRIPTION IS ADEQUATE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2353 ***********************************************************************
 HV2353  DESIGNATION -  GODDING RM 3
 HV2353  PID         -  HV2353
 HV2353  STATE/COUNTY-  MD/PRINCE GEORGES
 HV2353  COUNTRY     -  US
 HV2353  USGS QUAD   -  ALEXANDRIA (2019)
 HV2353
 HV2353                         *CURRENT SURVEY CONTROL
 HV2353  ______________________________________________________________________
 HV2353* NAD 83(1986) POSITION- 38 48 09.07   (N) 077 00 33.04   (W)   HD_HELD1
 HV2353* NAVD 88 ORTHO HEIGHT -    53.225 (meters)      174.62  (feet) ADJUSTED
 HV2353  ______________________________________________________________________
 HV2353  GEOID HEIGHT    -        -32.282 (meters)                     GEOID18
 HV2353  DYNAMIC HEIGHT  -         53.196 (meters)      174.53  (feet) COMP
 HV2353  MODELED GRAVITY -    980,085.6   (mgal)                       NAVD 88
 HV2353
 HV2353  VERT ORDER      -  SECOND    CLASS 0
 HV2353
 HV2353.The horizontal coordinates were determined by differentially corrected
 HV2353.hand held GPS observations or other comparable positioning techniques
 HV2353.and have an estimated accuracy of +/- 3 meters.
 HV2353
 HV2353.The orthometric height was determined by differential leveling and
 HV2353.adjusted by the NATIONAL GEODETIC SURVEY
 HV2353.in June 1991.
 HV2353
 HV2353.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2353.GEOID18 height accuracy estimate available here.
 HV2353
 HV2353.Click photographs - Photos may exist for this station.
 HV2353
 HV2353.The dynamic height is computed by dividing the NAVD 88
 HV2353.geopotential number by the normal gravity value computed on the
 HV2353.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2353.degrees latitude (g = 980.6199 gals.).
 HV2353
 HV2353.The modeled gravity was interpolated from observed gravity values.
 HV2353
 HV2353;                    North         East    Units  Estimated Accuracy
 HV2353;SPC MD       -   126,084.3     399,202.8     MT  (+/- 3 meters HH1 GPS) 
 HV2353
 HV2353_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2553196779(NAD 83)
 HV2353
 HV2353                          SUPERSEDED SURVEY CONTROL
 HV2353
 HV2353  NGVD 29 (11/26/84)   53.489  (m)          175.49   (f) ADJUSTED    2 0
 HV2353
 HV2353.Superseded values are not recommended for survey control.
 HV2353
 HV2353.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2353.See file dsdata.pdf to determine how the superseded data were derived.
 HV2353
 HV2353_MARKER: DR = REFERENCE MARK DISK
 HV2353_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2353_STAMPING: GODDING 1901 NO 3 1957
 HV2353_MARK LOGO: CGS
 HV2353_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2353+STABILITY: SURFACE MOTION
 HV2353
 HV2353  HISTORY     - Date     Condition        Report By
 HV2353  HISTORY     - 1957     MONUMENTED       CGS
 HV2353  HISTORY     - 1970     GOOD             NGS
 HV2353
 HV2353                          STATION DESCRIPTION
 HV2353
 HV2353'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970
 HV2353'1.1 MI W FROM OXON HILL.
 HV2353'DUE TO CHANGES IN THE AREA A NEW DESCRIPTION FOLLOWS.  0.15 MILE
 HV2353'SOUTH ALONG STATE HIGHWAY 210 FROM THE JUNCTION OF INTERSTATE
 HV2353'HIGHWAY 495 AND STATE HIGHWAY 210 ABOUT 1 MILE WEST OF OXON
 HV2353'HILL, THENCE 0.2 MILE WEST ALONG OXON HILL ROAD, THENCE NORTH
 HV2353'0.1 MILE ON A PAVED ROAD, THENCE WESTERLY 0.3 MILE ALONG A PAVED
 HV2353'ROAD AT THE OXON HILL CHILDRENS FARM, 24 FEET WEST-NORTHWEST OF
 HV2353'THE NORTHEAST CORNER OF A PORCH ON A LARGE HOUSE, 1.5 FEET WEST
 HV2353'OF THE WEST SIDE OF STEPS TO THE HOUSE, AND SET IN THE TOP OF A
 HV2353'10-INCH SQUARE CONCRETE POST THAT IS FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2351 ***********************************************************************
 HV2351  DESIGNATION -  GODDING RM 4
 HV2351  PID         -  HV2351
 HV2351  STATE/COUNTY-  MD/PRINCE GEORGES
 HV2351  COUNTRY     -  US
 HV2351  USGS QUAD   -  ALEXANDRIA (2019)
 HV2351
 HV2351                         *CURRENT SURVEY CONTROL
 HV2351  ______________________________________________________________________
 HV2351* NAD 83(1986) POSITION- 38 48 08.52   (N) 077 00 33.27   (W)   HD_HELD1
 HV2351* NAVD 88 ORTHO HEIGHT -    53.814 (meters)      176.55  (feet) ADJUSTED
 HV2351  ______________________________________________________________________
 HV2351  GEOID HEIGHT    -        -32.282 (meters)                     GEOID18
 HV2351  DYNAMIC HEIGHT  -         53.785 (meters)      176.46  (feet) COMP
 HV2351  MODELED GRAVITY -    980,085.6   (mgal)                       NAVD 88
 HV2351
 HV2351  VERT ORDER      -  SECOND    CLASS 0
 HV2351
 HV2351.The horizontal coordinates were determined by differentially corrected
 HV2351.hand held GPS observations or other comparable positioning techniques
 HV2351.and have an estimated accuracy of +/- 3 meters.
 HV2351
 HV2351.The orthometric height was determined by differential leveling and
 HV2351.adjusted by the NATIONAL GEODETIC SURVEY
 HV2351.in June 1991.
 HV2351
 HV2351.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2351.GEOID18 height accuracy estimate available here.
 HV2351
 HV2351.Click photographs - Photos may exist for this station.
 HV2351
 HV2351.The dynamic height is computed by dividing the NAVD 88
 HV2351.geopotential number by the normal gravity value computed on the
 HV2351.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2351.degrees latitude (g = 980.6199 gals.).
 HV2351
 HV2351.The modeled gravity was interpolated from observed gravity values.
 HV2351
 HV2351;                    North         East    Units  Estimated Accuracy
 HV2351;SPC MD       -   126,067.3     399,197.2     MT  (+/- 3 meters HH1 GPS) 
 HV2351
 HV2351_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2552596762(NAD 83)
 HV2351
 HV2351                          SUPERSEDED SURVEY CONTROL
 HV2351
 HV2351  NGVD 29 (11/26/84)   54.077  (m)          177.42   (f) ADJUSTED    2 0
 HV2351
 HV2351.Superseded values are not recommended for survey control.
 HV2351
 HV2351.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2351.See file dsdata.pdf to determine how the superseded data were derived.
 HV2351
 HV2351_MARKER: DR = REFERENCE MARK DISK
 HV2351_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2351_STAMPING: GODDING 1901 NO 4 1957
 HV2351_MARK LOGO: CGS
 HV2351_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2351+STABILITY: SURFACE MOTION
 HV2351
 HV2351  HISTORY     - Date     Condition        Report By
 HV2351  HISTORY     - 1957     MONUMENTED       CGS
 HV2351  HISTORY     - 1970     GOOD             NGS
 HV2351
 HV2351                          STATION DESCRIPTION
 HV2351
 HV2351'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970
 HV2351'1.1 MI W FROM OXEN HILL.
 HV2351'DUE TO CHANGES IN THE AREA A NEW DESCRIPTION FOLLOWS.  0.15 MILE
 HV2351'SOUTH ALONG STATE HIGHWAY 210 FROM THE JUNCTION OF INTERSTATE
 HV2351'HIGHWAY 495 AND STATE HIGHWAY 210 ABOUT 1 MILE WEST OF OXON
 HV2351'HILL, THENCE 0.2 MILE WEST ALONG OXON HILL ROAD, THENCE NORTH
 HV2351'0.1 MILE ALONG A PAVED ROAD, THENCE WESTERLY ALONG A PAVED ROAD
 HV2351'FOR 0.3 MILE AT THE OXON HILL CHILDRENS FARM, 16.5 FEET WEST
 HV2351'OF THE WEST SIDE OF STEPS LEADING TO A LARGE HOUSE, 7.5 FEET
 HV2351'SOUTH-SOUTHWEST OF THE SOUTHWST CORNER OF THE HOUSE, 2.5 FEET
 HV2351'WEST OF THE SOUTHWEST CORNER OF A PORCH AND SET IN THE TOP OF A
 HV2351'10-INCH SQUARE CONCRETE POST THAT IS FLUSH WITH THE GROUND
 HV2351'SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8017 ***********************************************************************
 AJ8017  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8017  DESIGNATION -  GOLD
 AJ8017  PID         -  AJ8017
 AJ8017  STATE/COUNTY-  MD/KENT
 AJ8017  COUNTRY     -  US
 AJ8017  USGS QUAD   -  LANGFORD CREEK (2016)
 AJ8017
 AJ8017                         *CURRENT SURVEY CONTROL
 AJ8017  ______________________________________________________________________
 AJ8017* NAD 83(2011) POSITION- 39 05 36.72796(N) 076 13 40.15608(W)   ADJUSTED
 AJ8017* NAD 83(2011) ELLIP HT-   -29.306 (meters)        (06/27/12)   ADJUSTED
 AJ8017* NAD 83(2011) EPOCH   -  2010.00
 AJ8017* NAVD 88 ORTHO HEIGHT -     4.125 (meters)       13.53  (feet) ADJUSTED
 AJ8017  ______________________________________________________________________
 AJ8017  GEOID HEIGHT    -        -33.453 (meters)                     GEOID18
 AJ8017  NAD 83(2011) X  -  1,180,016.334 (meters)                     COMP
 AJ8017  NAD 83(2011) Y  - -4,814,256.172 (meters)                     COMP
 AJ8017  NAD 83(2011) Z  -  4,000,363.071 (meters)                     COMP
 AJ8017  LAPLACE CORR    -         -1.96  (seconds)                    DEFLEC18
 AJ8017  DYNAMIC HEIGHT  -          4.123 (meters)       13.53  (feet) COMP
 AJ8017  MODELED GRAVITY -    980,099.7   (mgal)                       NAVD 88
 AJ8017
 AJ8017  VERT ORDER      -  SECOND    CLASS I
 AJ8017
 AJ8017  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8017  Standards:
 AJ8017         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8017            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8017  -------------------------------------------------------------------
 AJ8017  NETWORK    0.21   0.47           0.09   0.08   0.24     -0.02842801
 AJ8017  -------------------------------------------------------------------
 AJ8017  Click here for local accuracies and other accuracy information.
 AJ8017
 AJ8017.The horizontal coordinates were established by GPS observations
 AJ8017.and adjusted by the National Geodetic Survey in June 2012.
 AJ8017
 AJ8017.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8017.been affixed to the stable North American tectonic plate. See 
 AJ8017.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8017
 AJ8017.The horizontal coordinates are valid at the epoch date displayed above
 AJ8017.which is a decimal equivalence of Year/Month/Day.
 AJ8017
 AJ8017.The orthometric height was determined by differential leveling and
 AJ8017.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8017.in December 2003.
 AJ8017
 AJ8017.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8017.GEOID18 height accuracy estimate available here.
 AJ8017
 AJ8017.Click photographs - Photos may exist for this station.
 AJ8017
 AJ8017.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8017
 AJ8017.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8017
 AJ8017.The ellipsoidal height was determined by GPS observations
 AJ8017.and is referenced to NAD 83.
 AJ8017
 AJ8017.The dynamic height is computed by dividing the NAVD 88
 AJ8017.geopotential number by the normal gravity value computed on the
 AJ8017.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8017.degrees latitude (g = 980.6199 gals.).
 AJ8017
 AJ8017.The modeled gravity was interpolated from observed gravity values.
 AJ8017
 AJ8017. The following values were computed from the NAD 83(2011) position.
 AJ8017
 AJ8017;                    North         East     Units Scale Factor Converg.
 AJ8017;SPC MD       -   158,672.229   466,799.253   MT  0.99995705   +0 29 04.7
 AJ8017;SPC MD       -   520,577.14  1,531,490.55   sFT  0.99995705   +0 29 04.7
 AJ8017;UTM  18      - 4,327,873.889   393,819.256   MT  0.99973882   -0 46 27.6
 AJ8017
 AJ8017!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8017!SPC MD       -   1.00000460  x   0.99995705  =   0.99996165
 AJ8017!UTM  18      -   1.00000460  x   0.99973882  =   0.99974342
 AJ8017
 AJ8017_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9381927873(NAD 83)
 AJ8017
 AJ8017                          SUPERSEDED SURVEY CONTROL
 AJ8017
 AJ8017  NAD 83(2007)-  39 05 36.72816(N)    076 13 40.15682(W) AD(2002.00) 0
 AJ8017  ELLIP H (02/10/07)  -29.278  (m)                       GP(2002.00)    
 AJ8017  NAD 83(1991)-  39 05 36.72816(N)    076 13 40.15693(W) AD(       ) A
 AJ8017  ELLIP H (02/12/02)  -29.273  (m)                       GP(       ) 4 1
 AJ8017  NAVD 88 (02/12/02)    4.2    (m)  GEOID99  model used  GPS OBS        
 AJ8017
 AJ8017.Superseded values are not recommended for survey control.
 AJ8017
 AJ8017.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8017.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8017
 AJ8017_MARKER: DD = SURVEY DISK
 AJ8017_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8017_STAMPING: GOLD 2000
 AJ8017_MARK LOGO: MDSHA
 AJ8017_PROJECTION: FLUSH
 AJ8017_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8017+STABILITY: SURFACE MOTION
 AJ8017_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8017+SATELLITE: SATELLITE OBSERVATIONS - April 14, 2025
 AJ8017
 AJ8017  HISTORY     - Date     Condition        Report By
 AJ8017  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ8017  HISTORY     - 20010228 GOOD             MDSHA
 AJ8017  HISTORY     - 20080718 GOOD             JMT
 AJ8017  HISTORY     - 20140109 GOOD             ARCSHE
 AJ8017  HISTORY     - 20191009 GOOD             MDSHA
 AJ8017  HISTORY     - 20220127 GOOD             MDSHA
 AJ8017  HISTORY     - 20250414 GOOD             PROFLN
 AJ8017
 AJ8017                          STATION DESCRIPTION
 AJ8017
 AJ8017'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8017'THE STATION IS LOCATED ABOUT 3.2 MILES (5.1 KM) SOUTH OF ROCK HALL,
 AJ8017'10.0 MILES (16.1 KM) NORTHWEST OF CENTREVILLE.  TO REACH THE STATION
 AJ8017'FROM THE INTERSECTION OF STATE HIGHWAY 20 AND STATE HIGHWAY 445 IN
 AJ8017'ROCK HALL, PROCEED SOUTH ALONG STATE HIGHWAY 445 FOR 3.25 MILES (5.23
 AJ8017'KM) TO THE STATION ON THE LEFT.  THE STATION IS ALSO 0.15 MILES (0.24
 AJ8017'KM) NORTH OF ELLENDALE FARM ROAD LEADING WEST.  THE STATION IS A
 AJ8017'MARYLAND STATE SURVEY DISK SET IN THE TOP OF A 12 INCH ROUND CONCRETE
 AJ8017'MONUMENT, WHICH IS FLUSH WITH THE GROUND.  IT IS 28.8 FEET (8.8 M)
 AJ8017'EAST OF THE CENTER LINE OF THE HIGHWAY, 15.0 FEET (4.6 M) SOUTH OF
 AJ8017'POWER POLE NUMBER 29197-19821, 49.2 FEET (15.0 M) EAST AND ACROSS THE
 AJ8017'ROAD FROM POWER POLE NUMBER 29191-19828, 129.0 FEET (39.3 M) NORTH OF
 AJ8017'POWER POLE NUMBER 29199-19816, 135.5 FEET (41.3 M) NORTHEAST AND
 AJ8017'ACROSS THE ROAD FROM POWER POLE NUMBER 29194-19815, AND ABOUT LEVEL
 AJ8017'WITH THE ROAD SURFACE.
 AJ8017
 AJ8017                          STATION RECOVERY (2001)
 AJ8017
 AJ8017'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ8017'RECOVERED AS DESCRIBED.
 AJ8017
 AJ8017                          STATION RECOVERY (2008)
 AJ8017
 AJ8017'RECOVERY NOTE BY JOHNSON MIRMIRAN AND THOMPSON PA 2008 (JAF)
 AJ8017'RECOVERED AS DESCRIBED
 AJ8017'(FAIR FOR GPS OBSERVATIONS)
 AJ8017
 AJ8017                          STATION RECOVERY (2014)
 AJ8017
 AJ8017'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 AJ8017'RECOVERED IN GOOD CONDITION.
 AJ8017
 AJ8017                          STATION RECOVERY (2019)
 AJ8017
 AJ8017'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2019 (WAC)
 AJ8017'RECOVERED IN GOOD CONDITION.
 AJ8017
 AJ8017                          STATION RECOVERY (2022)
 AJ8017
 AJ8017'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 AJ8017'RECOVERED IN GOOD CONDITION.  DESCRIPTION HAS BEEN UPDATED.
 AJ8017'
 AJ8017'THE MARK IS LOCATED ABOUT 11.7 MI (18.8 KM) SOUTHWEST OF CHESTERTOWN,
 AJ8017'7.8 MI (12.6 KM) NORTH-NORTHEAST OF CLOVERFIELDS, 6.2 MI (10.0 KM)
 AJ8017'NORTHEAST OF LOVE POINT AND 3.1 MI (5.0 KM) SOUTH OF ROCK HALL.
 AJ8017'
 AJ8017'TO REACH THE MARK FROM THE JUNCTION OF MD 21 AND MD 20 SOUTH TURN
 AJ8017'RIGHT AND GO SOUTH-SOUTHWEST ON MD 20 W FOR 4.62 MI (7.43 KM) TO AN
 AJ8017'INTERSECTION.  TURN LEFT AND GO SOUTHEAST ON MD 674 W/SHARP ST FOR
 AJ8017'0.31 MI (0.50 KM) TO AN INTERSECTION.  CONTINUE STRAIGHT ONTO BOUNDARY
 AJ8017'AVENUE FOR 0.41 MI (0.66 KM) TO AN INTERSECTION.  TURN LEFT AND GO
 AJ8017'SOUTH-SOUTHWEST ON ON MD 445 S FOR 2.71 MI (4.36 KM) TO THE MARK ON
 AJ8017'THE LEFT.
 AJ8017
 AJ8017                          STATION RECOVERY (2025)
 AJ8017
 AJ8017'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 AJ8017'OUTSIDE OF AND ABOUT IN THE MIDDLE OF A CURVE WITH TANGENTS EXTENDING
 AJ8017'NORTH AND NORTH-NORTHWEST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH7942 ***********************************************************************
 DH7942  DESIGNATION -  GOLDSBOROUGH
 DH7942  PID         -  DH7942
 DH7942  STATE/COUNTY-  MD/SOMERSET
 DH7942  COUNTRY     -  US
 DH7942  USGS QUAD   -  CRISFIELD (2016)
 DH7942
 DH7942                         *CURRENT SURVEY CONTROL
 DH7942  ______________________________________________________________________
 DH7942* NAD 83(1986) POSITION- 37 58 47.2    (N) 075 51 29.6    (W)   HD_HELD2
 DH7942* NAVD 88 ORTHO HEIGHT -     1.286 (meters)        4.22  (feet) ADJUSTED
 DH7942  ______________________________________________________________________
 DH7942  GEOID HEIGHT    -        -36.091 (meters)                     GEOID18
 DH7942  DYNAMIC HEIGHT  -          1.285 (meters)        4.22  (feet) COMP
 DH7942  MODELED GRAVITY -    979,971.3   (mgal)                       NAVD 88
 DH7942
 DH7942  VERT ORDER      -  SECOND    CLASS I
 DH7942
 DH7942.The horizontal coordinates were established by autonomous hand held GPS
 DH7942.observations and have an estimated accuracy of +/- 10 meters.
 DH7942
 DH7942.The orthometric height was determined by differential leveling and
 DH7942.adjusted by the NATIONAL GEODETIC SURVEY
 DH7942.in February 2006.
 DH7942
 DH7942.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH7942.GEOID18 height accuracy estimate available here.
 DH7942
 DH7942.Click photographs - Photos may exist for this station.
 DH7942
 DH7942.The dynamic height is computed by dividing the NAVD 88
 DH7942.geopotential number by the normal gravity value computed on the
 DH7942.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DH7942.degrees latitude (g = 980.6199 gals.).
 DH7942
 DH7942.The modeled gravity was interpolated from observed gravity values.
 DH7942
 DH7942;                    North         East    Units  Estimated Accuracy
 DH7942;SPC MD       -    35,385.      500,317.      MT  (+/- 10 meters HH2 GPS)
 DH7942
 DH7942_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2462903918(NAD 83)
 DH7942
 DH7942                          SUPERSEDED SURVEY CONTROL
 DH7942
 DH7942.No superseded survey control is available for this station.
 DH7942
 DH7942_MARKER: DV = VERTICAL CONTROL DISK
 DH7942_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 DH7942+WITH SETTING: PAVEMENT
 DH7942_SP_SET: WATER TANK LEG BASE
 DH7942_STAMPING: GOLDSBOROUGH 2005
 DH7942_MARK LOGO: NGS
 DH7942_MAGNETIC: N = NO MAGNETIC MATERIAL
 DH7942_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DH7942+STABILITY: SURFACE MOTION
 DH7942_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH7942+SATELLITE: SATELLITE OBSERVATIONS - 2005
 DH7942
 DH7942  HISTORY     - Date     Condition        Report By
 DH7942  HISTORY     - 2005     MONUMENTED       NGS
 DH7942
 DH7942                          STATION DESCRIPTION
 DH7942
 DH7942'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DH7942'THE STATION IS LOCATED ABOUT 6.4 MI (10.3 KM) SOUTHWEST OF MARION, 3.2
 DH7942'MI (5.15 KM) SOUTHWEST OF HOPEWELL AND 0.3 MI (0.48 KM) SOUTHWEST OF
 DH7942'CRISFIELD.
 DH7942'IN THE CITY OF CRISFIELD SET IN THE SOUTHEAST CORNER OF THE WEST LEG
 DH7942'OF THE CITY WATER TANK LOCATED BETWEEN WEST MAIN ST AND BROWDAY AND
 DH7942'DIRECTLY BEHIND GOLDSBOROUGH MARINE 709 WEST MAIN ST.  0.1 MILE (0.16
 DH7942'KM) SOUTHWEST OF THE CITY FIRE DEPARTMENT.
 DH7942'115.2 FEET (35.1 M) NORTH OF THE CENTERLINE OF BROWDAY, 44.3 FEET
 DH7942'(13.5 M) SOUTH OF THE EAST GATE POST OF THE WALK THROUGH GATE OF THE
 DH7942'CHAIN LINK FENCE AROUND THE WATER TANK, 38.8 FEET (11.8 M) NORTH OF
 DH7942'THE NORTHWEST CORNER OF THE CONCRETE BLOCK PUMP HOUSE BUILDING, 1.2
 DH7942'FEET (0.4 M) NORTHWEST OF THE BASE OF THE OVERFLOW PIPE AT THE BASE OF
 DH7942'THE EAST LEG OF THE WATER TANK.  NOTE - FOR PERMISSION AND ACCESS TO
 DH7942'THE STATION AND KEY FOR THE GATE CONTACT CITY HALL LOCATED AT 113 WEST
 DH7942'MAIN STREET.  ABOUT 1.0 FOOT (0.3 M) ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5065 ***********************************************************************
 JV5065  DESIGNATION -  GOLF
 JV5065  PID         -  JV5065
 JV5065  STATE/COUNTY-  MD/KENT
 JV5065  COUNTRY     -  US
 JV5065  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5065
 JV5065                         *CURRENT SURVEY CONTROL
 JV5065  ______________________________________________________________________
 JV5065* NAD 83(1991) POSITION- 39 01 43.03099(N) 076 14 32.14620(W)   ADJUSTED
 JV5065* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5065  ______________________________________________________________________
 JV5065  GEOID HEIGHT    -        -33.571 (meters)                     GEOID18
 JV5065  LAPLACE CORR    -         -2.42  (seconds)                    DEFLEC18
 JV5065  HORZ ORDER      -  SECOND
 JV5065
 JV5065.The horizontal coordinates were established by classical geodetic methods
 JV5065.and adjusted by the National Geodetic Survey in January 1992.
 JV5065
 JV5065.The orthometric height was scaled from a topographic map.
 JV5065
 JV5065.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5065.GEOID18 height accuracy estimate available here.
 JV5065
 JV5065.Click photographs - Photos may exist for this station.
 JV5065
 JV5065.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5065
 JV5065. The following values were computed from the NAD 83(1991) position.
 JV5065
 JV5065;                    North         East     Units Scale Factor Converg.
 JV5065;SPC MD       -   151,455.595   465,609.783   MT  0.99995339   +0 28 32.1
 JV5065;SPC MD       -   496,900.56  1,527,588.10   sFT  0.99995339   +0 28 32.1
 JV5065;UTM  18      - 4,320,686.661   392,471.868   MT  0.99974237   -0 46 56.4
 JV5065
 JV5065!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5065!SPC MD       -   1.00000515  x   0.99995339  =   0.99995854
 JV5065!UTM  18      -   1.00000515  x   0.99974237  =   0.99974752
 JV5065
 JV5065:                Primary Azimuth Mark                     Grid Az
 JV5065:SPC MD       -  LOVE PT FERRY WHSE EAST GABLE            273 16 47.2
 JV5065:UTM  18      -  LOVE PT FERRY WHSE EAST GABLE            274 32 15.7
 JV5065
 JV5065_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9247120686(NAD 83)
 JV5065
 JV5065|---------------------------------------------------------------------|
 JV5065| PID    Reference Object                     Distance      Geod. Az  |
 JV5065|                                                           dddmmss.s |
 JV5065| CA9457 GOLF RM 2                            20.118 METERS 10240     |
 JV5065| CA9456 GOLF RM 1                             9.970 METERS 10244     |
 JV5065| HV5792 OLD BARN CUPOLA                     APPROX. 7.0 KM 1543342.0 |
 JV5065| JV5165 LOVE PT FERRY WHSE EAST GABLE       APPROX. 5.0 KM 2734519.3 |
 JV5065|---------------------------------------------------------------------|
 JV5065
 JV5065                          SUPERSEDED SURVEY CONTROL
 JV5065
 JV5065  NAD 83(1986)-  39 01 43.02598(N)    076 14 32.15792(W) AD(       ) 2
 JV5065  NAD 27      -  39 01 42.62600(N)    076 14 33.32300(W) AD(       ) 2
 JV5065
 JV5065.Superseded values are not recommended for survey control.
 JV5065
 JV5065.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5065.See file dsdata.pdf to determine how the superseded data were derived.
 JV5065
 JV5065_MARKER: DS = TRIANGULATION STATION DISK
 JV5065_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5065_STAMPING: GOLF 1932
 JV5065_MARK LOGO: CGS
 JV5065_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5065+STABILITY: SURFACE MOTION
 JV5065
 JV5065  HISTORY     - Date     Condition        Report By
 JV5065  HISTORY     - 1932     MONUMENTED       CGS
 JV5065  HISTORY     - 1938     MARK NOT FOUND   CGS
 JV5065  HISTORY     - 1941     GOOD             CGS
 JV5065  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5065
 JV5065                          STATION DESCRIPTION
 JV5065
 JV5065'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (JAB)
 JV5065'STATION IS ON THE EASTERN SHORE OF THE MOUTH OF CHESTER RIVER,
 JV5065'ON THE WESTERN SIDE OF EAST NECK ISLAND, ON WICKES BEACH, IN
 JV5065'MARSH LAND 1 FOOT ABOVE HIGH WATER.  ABOUT 23 YARDS NE OF SHORE,
 JV5065'120 YARDS SW OF LARGE GROUP OF TREES, AND 260 YARDS SE OF POINT
 JV5065'WHERE WOODS AND BEACH MEET.  HIGH-WATER LINE IS 21 METERS W OF
 JV5065'THE STATION ON RANGE WITH STATION BLUE.
 JV5065'
 JV5065'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5065'CONCRETE, IN THE TOP OF A TILE.
 JV5065'
 JV5065'HEIGHT OF SIGNAL ABOVE STATION MARK - 7 METERS.
 JV5065
 JV5065                          STATION RECOVERY (1938)
 JV5065
 JV5065'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5065'STATION WAS NOT FOUND ALTHOUGH SEARCH WAS MADE.
 JV5065
 JV5065                          STATION RECOVERY (1941)
 JV5065
 JV5065'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5065'STATION RECOVERED IN GOOD CONDITION.  IT IS ABOUT 10 METERS FROM
 JV5065'HIGH-WATER LINE IN MARSH AT WICKES BEACH NEAR DUCK BLIND USED AS
 JV5065'HYDROGRAPHIC SIGNAL.
 JV5065
 JV5065                          STATION RECOVERY (1961)
 JV5065
 JV5065'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5065'STATION MARK AND REFERENCE MARKS WERE NOT RECOVERED AFTER A
 JV5065'THOROUGH SEARCH OF THE AREA.  THE STATION NOW PLOTS VERY CLOSE
 JV5065'TO THE M.H.W.L. AND MAY HAVE BEEN DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6527 ***********************************************************************
 JV6527  DESIGNATION -  GOLF 2
 JV6527  PID         -  JV6527
 JV6527  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6527  COUNTRY     -  US
 JV6527  USGS QUAD   -  BELTSVILLE (2016)
 JV6527
 JV6527                         *CURRENT SURVEY CONTROL
 JV6527  ______________________________________________________________________
 JV6527* NAD 83(1991) POSITION- 39 01 00.67937(N) 076 55 37.88658(W)   ADJUSTED
 JV6527* NAVD 88 ORTHO HEIGHT -    55.25  (meters)      181.3   (feet) RESET
 JV6527  ______________________________________________________________________
 JV6527  GEOID HEIGHT    -        -32.128 (meters)                     GEOID18
 JV6527  LAPLACE CORR    -         -4.16  (seconds)                    DEFLEC18
 JV6527  HORZ ORDER      -  THIRD
 JV6527  VERT ORDER      -  THIRD
 JV6527
 JV6527.The horizontal coordinates were established by classical geodetic methods
 JV6527.and adjusted by the National Geodetic Survey in January 1992.
 JV6527
 JV6527.The orthometric height was computed from unverified reset data.
 JV6527
 JV6527.No vertical observational check was made to the station.
 JV6527
 JV6527.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6527.GEOID18 height accuracy estimate available here.
 JV6527
 JV6527.Click photographs - Photos may exist for this station.
 JV6527
 JV6527.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6527
 JV6527. The following values were computed from the NAD 83(1991) position.
 JV6527
 JV6527;                    North         East     Units Scale Factor Converg.
 JV6527;SPC MD       -   149,879.845   406,305.412   MT  0.99995287   +0 02 44.5
 JV6527;SPC MD       -   491,730.79  1,333,020.34   sFT  0.99995287   +0 02 44.5
 JV6527;UTM  18      - 4,320,413.929   333,154.182   MT  0.99994278   -1 12 48.7
 JV6527
 JV6527!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6527!SPC MD       -   0.99999637  x   0.99995287  =   0.99994924
 JV6527!UTM  18      -   0.99999637  x   0.99994278  =   0.99993915
 JV6527
 JV6527:                Primary Azimuth Mark                     Grid Az
 JV6527:SPC MD       -  BELTSVILLE DA PLANT ADM DOME             017 34 34.5
 JV6527:UTM  18      -  BELTSVILLE DA PLANT ADM DOME             018 50 07.7
 JV6527
 JV6527_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3315420413(NAD 83)
 JV6527
 JV6527|---------------------------------------------------------------------|
 JV6527| PID    Reference Object                     Distance      Geod. Az  |
 JV6527|                                                           dddmmss.s |
 JV6527| JV6528 GOLF 2 RM 3                          56.946 METERS 01359     |
 JV6527| JV5963 BELTSVILLE DA PLANT ADM DOME        APPROX. 1.1 KM 0173719.0 |
 JV6527| JV0991 GOLF RM 1                           103.998 METERS 21816     |
 JV6527| JV0989 GOLF                                116.395 METERS 23107     |
 JV6527| JV6529 GOLF 2 RM 4                          48.416 METERS 25601     |
 JV6527|---------------------------------------------------------------------|
 JV6527
 JV6527                          SUPERSEDED SURVEY CONTROL
 JV6527
 JV6527  NAD 83(1986)-  39 01 00.67814(N)    076 55 37.89736(W) AD(       ) 3
 JV6527  NGVD 29 (11/18/05)   55.47   (m)          182.0    (f) RESET       3  
 JV6527  NGVD 29              55.47   (m)          182.0    (f) LEVELING    3  
 JV6527
 JV6527.Superseded values are not recommended for survey control.
 JV6527
 JV6527.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6527.See file dsdata.pdf to determine how the superseded data were derived.
 JV6527
 JV6527_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6527_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6527_STAMPING: GOLF 2 1985
 JV6527_MARK LOGO: NGS
 JV6527_PROJECTION: PROJECTING
 JV6527_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6527_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6527+STABILITY: SURFACE MOTION
 JV6527_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6527+SATELLITE: SATELLITE OBSERVATIONS - March 05, 2010
 JV6527
 JV6527  HISTORY     - Date     Condition        Report By
 JV6527  HISTORY     - 1985     MONUMENTED       NGS
 JV6527  HISTORY     - 19910627 GOOD             USPSQD
 JV6527  HISTORY     - 20100305 GOOD             NGS
 JV6527
 JV6527                          STATION DESCRIPTION
 JV6527
 JV6527'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 JV6527'IN COLLEGE PARK.
 JV6527'IN A ISLAND AT THE SOUTHWEST ANGLE OF THE INTERSECTION OF INTERSTATE
 JV6527'HIGHWAY 495 AND U.S. HIGHWAY 1, 7.6 M (24.9 FT) WEST FROM THE WEST
 JV6527'EDGE OF U.S. HIGHWAY 1, 117.6 M (385.8 FT) SOUTH FROM THE SOUTHWEST
 JV6527'CORNER OF THE BRIDGE FOR U.S. HIGHWAY 1 WHERE IT CROSSES OVER
 JV6527'INTERSTATE HIGHWAY 495, 6.7 M (22.0 FT) SOUTH-SOUTHWEST FROM A
 JV6527'POWERLINE POLE NUMBERED 82043 6203 AND 26.4 M (86.6 FT) SOUTH FROM
 JV6527'THE CENTER OF A DROP INLET IN THE GRASS COVERED TRAFIC ISLAND.
 JV6527'THE MARK IS 0.5 METERS  E FROM  A WITNESS POST
 JV6527'THE MARK IS 0.5 M BELOW ROAD.
 JV6527
 JV6527                          STATION RECOVERY (1991)
 JV6527
 JV6527'RECOVERY NOTE BY US POWER SQUADRON 1991 (WAY)
 JV6527'RECOVERED IN GOOD CONDITION.
 JV6527
 JV6527                          STATION RECOVERY (2010)
 JV6527
 JV6527'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV6527'MARK IS 3.2 M (10.5 FT) WEST SOUTHWEST OF THE BACKSIDE OF THE SIDEWALK
 JV6527'ALONG THE SOUTHBOUND LANE OR RT 1, 2.61 M SOUTH SOUTHWEST OF THE
 JV6527'CENTER OF A 0.15 M X 0.15 M (6 X 6 INCH) WOODEN POST SUPPORTING AN
 JV6527'ELECTRICAL SWITCH AND IS NOW RECESSED 0.13 M.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6528 ***********************************************************************
 JV6528  DESIGNATION -  GOLF 2 RM 3
 JV6528  PID         -  JV6528
 JV6528  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6528  COUNTRY     -  US
 JV6528  USGS QUAD   -  BELTSVILLE (2016)
 JV6528
 JV6528                         *CURRENT SURVEY CONTROL
 JV6528  ______________________________________________________________________
 JV6528* NAD 83(1991) POSITION- 39 01 02.47125(N) 076 55 37.31441(W)   ADJUSTED
 JV6528* NAVD 88 ORTHO HEIGHT -    55.24  (meters)      181.2   (feet) RESET
 JV6528  ______________________________________________________________________
 JV6528  GEOID HEIGHT    -        -32.128 (meters)                     GEOID18
 JV6528  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 JV6528  HORZ ORDER      -  THIRD
 JV6528  VERT ORDER      -  THIRD
 JV6528
 JV6528.The horizontal coordinates were established by classical geodetic methods
 JV6528.and adjusted by the National Geodetic Survey in January 1992.
 JV6528
 JV6528.The orthometric height was computed from unverified reset data.
 JV6528
 JV6528.No vertical observational check was made to the station.
 JV6528
 JV6528.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6528.GEOID18 height accuracy estimate available here.
 JV6528
 JV6528.Click photographs - Photos may exist for this station.
 JV6528
 JV6528.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6528
 JV6528. The following values were computed from the NAD 83(1991) position.
 JV6528
 JV6528;                    North         East     Units Scale Factor Converg.
 JV6528;SPC MD       -   149,935.110   406,319.132   MT  0.99995289   +0 02 44.9
 JV6528;SPC MD       -   491,912.11  1,333,065.35   sFT  0.99995289   +0 02 44.9
 JV6528;UTM  18      - 4,320,468.880   333,169.113   MT  0.99994272   -1 12 48.4
 JV6528
 JV6528!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6528!SPC MD       -   0.99999637  x   0.99995289  =   0.99994926
 JV6528!UTM  18      -   0.99999637  x   0.99994272  =   0.99993909
 JV6528
 JV6528_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3316920468(NAD 83)
 JV6528
 JV6528                          SUPERSEDED SURVEY CONTROL
 JV6528
 JV6528  NAD 83(1986)-  39 01 02.47001(N)    076 55 37.32518(W) AD(       ) 3
 JV6528  NGVD 29 (11/18/05)   55.47   (m)          182.0    (f) RESET       3  
 JV6528  NGVD 29              55.47   (m)          182.0    (f) LEVELING    3  
 JV6528
 JV6528.Superseded values are not recommended for survey control.
 JV6528
 JV6528.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6528.See file dsdata.pdf to determine how the superseded data were derived.
 JV6528
 JV6528_MARKER: DR = REFERENCE MARK DISK
 JV6528_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV6528_SP_SET: STREET LIGHT BASE
 JV6528_STAMPING: GOLF 2 NO 3 1985
 JV6528_MARK LOGO: NGS
 JV6528_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6528_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6528+STABILITY: SURFACE MOTION
 JV6528
 JV6528  HISTORY     - Date     Condition        Report By
 JV6528  HISTORY     - 1985     MONUMENTED       NGS
 JV6528  HISTORY     - 19910627 GOOD             USPSQD
 JV6528
 JV6528                          STATION DESCRIPTION
 JV6528
 JV6528'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 JV6528'IN COLLEGE PARK.
 JV6528'IN THE SOUTHWEST ANGLE OF THE INTERSECTION OF INTERSTATE HIGHWAY 495
 JV6528'AND U.S. HIGHWAY 1, ON THE NORTH EDGE OF THE EXIT RAMP FROM SOUTH
 JV6528'BOUND U.S. HIGHWAY ONTO EAST BOUND INTERSTATE HIGHWAY 1, 60.7 M
 JV6528'(199.1 FT) SOUTH-SOUTHWEST FROM THE SOUTHWEST END OF THE OVERPASS
 JV6528'BRIDGE, 15.7 M (51.5 FT) SOUTH-SOUTHWEST FROM A POWERLINE POLE
 JV6528'NUMBERED 802431 6824, 1.5 M (4.9 FT) WEST FROM THE WEST CURB OF THE
 JV6528'EXIT RAMP AND 0.8 M (2.6 FT) NORTHEAST FROM THE NORTHEAST LEG OF A
 JV6528'HIGHWAY SIGN SPEED LIMIT 25 MPH.
 JV6528'THE MARK IS 56.9 METERS  NNE FROM  A WITNESS POST
 JV6528'THE MARK IS 0.02 M ABOVE ROAD RAMP.
 JV6528
 JV6528                          STATION RECOVERY (1991)
 JV6528
 JV6528'RECOVERY NOTE BY US POWER SQUADRON 1991 (WAY)
 JV6528'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6529 ***********************************************************************
 JV6529  DESIGNATION -  GOLF 2 RM 4
 JV6529  PID         -  JV6529
 JV6529  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6529  COUNTRY     -  US
 JV6529  USGS QUAD   -  BELTSVILLE (2016)
 JV6529
 JV6529                         *CURRENT SURVEY CONTROL
 JV6529  ______________________________________________________________________
 JV6529* NAD 83(1991) POSITION- 39 01 00.29999(N) 076 55 39.83949(W)   NO CHECK
 JV6529* NAVD 88 ORTHO HEIGHT -    54.23  (meters)      177.9   (feet) RESET
 JV6529  ______________________________________________________________________
 JV6529  GEOID HEIGHT    -        -32.127 (meters)                     GEOID18
 JV6529  LAPLACE CORR    -         -4.14  (seconds)                    DEFLEC18
 JV6529  HORZ ORDER      -  THIRD
 JV6529  VERT ORDER      -  THIRD
 JV6529
 JV6529.The horizontal coordinates were established by classical geodetic methods
 JV6529.and adjusted by the National Geodetic Survey in January 1992.
 JV6529
 JV6529.No horizontal observational check was made to the station.
 JV6529
 JV6529.The orthometric height was computed from unverified reset data.
 JV6529
 JV6529.No vertical observational check was made to the station.
 JV6529
 JV6529.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6529.GEOID18 height accuracy estimate available here.
 JV6529
 JV6529.Click photographs - Photos may exist for this station.
 JV6529
 JV6529.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6529
 JV6529. The following values were computed from the NAD 83(1991) position.
 JV6529
 JV6529;                    North         East     Units Scale Factor Converg.
 JV6529;SPC MD       -   149,868.109   406,258.442   MT  0.99995286   +0 02 43.3
 JV6529;SPC MD       -   491,692.29  1,332,866.24   sFT  0.99995286   +0 02 43.3
 JV6529;UTM  18      - 4,320,403.229   333,106.966   MT  0.99994298   -1 12 50.0
 JV6529
 JV6529!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6529!SPC MD       -   0.99999653  x   0.99995286  =   0.99994939
 JV6529!UTM  18      -   0.99999653  x   0.99994298  =   0.99993951
 JV6529
 JV6529_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3310620403(NAD 83)
 JV6529
 JV6529                          SUPERSEDED SURVEY CONTROL
 JV6529
 JV6529  NAD 83(1986)-  39 01 00.29877(N)    076 55 39.85026(W) AD(       ) 3
 JV6529  NGVD 29 (11/18/05)   54.45   (m)          178.6    (f) RESET       3  
 JV6529  NGVD 29              54.45   (m)          178.6    (f) LEVELING    3  
 JV6529
 JV6529.Superseded values are not recommended for survey control.
 JV6529
 JV6529.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6529.See file dsdata.pdf to determine how the superseded data were derived.
 JV6529
 JV6529_MARKER: DR = REFERENCE MARK DISK
 JV6529_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV6529_SP_SET: STREET LIGHT BASE
 JV6529_STAMPING: GOLF 2 NO 4 1985
 JV6529_MARK LOGO: NGS
 JV6529_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6529_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6529+STABILITY: SURFACE MOTION
 JV6529
 JV6529  HISTORY     - Date     Condition        Report By
 JV6529  HISTORY     - 1985     MONUMENTED       NGS
 JV6529  HISTORY     - 19910627 MARK NOT FOUND   USPSQD
 JV6529
 JV6529                          STATION DESCRIPTION
 JV6529
 JV6529'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 JV6529'IN COLLEGE PARK.
 JV6529'ON THE SOUTH EDGE OF THE EXIT RAMP FROM EAST BOUND INTERSTATE HIGHWAY
 JV6529'495 ONTO SOUTH BOUND U.S. HIGHWAY 1, 7.4 M (24.3 FT) SOUTH-SOUTHEAST
 JV6529'FROM THE CENTER OF THE EXIT RAMP (PRESENTLY UNDER CONSTRUCTION), 9.4
 JV6529'M (30.8 FT) NORTH-NORTHEAST FROM A CHAIN LINK FENCE AND 0.2 M
 JV6529'(0.7 FT) EAST FROM THE EAST EDGE OF THE METAL LIGHTPOLE.
 JV6529'THE MARK IS 48.9 METERS  SE FROM  A WITNESS POST
 JV6529'THE MARK IS 0.01 M BELOW ROAD RAMP.
 JV6529
 JV6529                          STATION RECOVERY (1991)
 JV6529
 JV6529'RECOVERY NOTE BY US POWER SQUADRON 1991 (WAY)
 JV6529'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2173 ***********************************************************************
 HU2173  DESIGNATION -  GOLF AZ MK 2
 HU2173  PID         -  HU2173
 HU2173  STATE/COUNTY-  MD/WICOMICO
 HU2173  COUNTRY     -  US
 HU2173  USGS QUAD   -  EDEN (2016)
 HU2173
 HU2173                         *CURRENT SURVEY CONTROL
 HU2173  ______________________________________________________________________
 HU2173* NAD 83(1991) POSITION- 38 20 22.86525(N) 075 44 23.10355(W)   ADJUSTED
 HU2173* NAVD 88 ORTHO HEIGHT -     5.808 (meters)       19.06  (feet) ADJUSTED
 HU2173  ______________________________________________________________________
 HU2173  GEOID HEIGHT    -        -35.763 (meters)                     GEOID18
 HU2173  LAPLACE CORR    -         -1.38  (seconds)                    DEFLEC18
 HU2173  DYNAMIC HEIGHT  -          5.804 (meters)       19.04  (feet) COMP
 HU2173  MODELED GRAVITY -    980,002.6   (mgal)                       NAVD 88
 HU2173
 HU2173  HORZ ORDER      -  SECOND
 HU2173  VERT ORDER      -  SECOND    CLASS I
 HU2173
 HU2173.The horizontal coordinates were established by classical geodetic methods
 HU2173.and adjusted by the National Geodetic Survey in January 1992.
 HU2173
 HU2173.The orthometric height was determined by differential leveling and
 HU2173.adjusted by the NATIONAL GEODETIC SURVEY
 HU2173.in June 1991.
 HU2173
 HU2173.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2173.GEOID18 height accuracy estimate available here.
 HU2173
 HU2173.Click photographs - Photos may exist for this station.
 HU2173
 HU2173.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2173
 HU2173.The dynamic height is computed by dividing the NAVD 88
 HU2173.geopotential number by the normal gravity value computed on the
 HU2173.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2173.degrees latitude (g = 980.6199 gals.).
 HU2173
 HU2173.The modeled gravity was interpolated from observed gravity values.
 HU2173
 HU2173. The following values were computed from the NAD 83(1991) position.
 HU2173
 HU2173;                    North         East     Units Scale Factor Converg.
 HU2173;SPC MD       -    75,468.448   510,174.012   MT  0.99999333   +0 47 27.5
 HU2173;SPC MD       -   247,599.40  1,673,795.90   sFT  0.99999333   +0 47 27.5
 HU2173;UTM  18      - 4,243,763.737   435,352.148   MT  0.99965147   -0 27 32.0
 HU2173
 HU2173!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2173!SPC MD       -   1.00000470  x   0.99999333  =   0.99999803
 HU2173!UTM  18      -   1.00000470  x   0.99965147  =   0.99965617
 HU2173
 HU2173_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3535243763(NAD 83)
 HU2173
 HU2173                          SUPERSEDED SURVEY CONTROL
 HU2173
 HU2173  NAD 83(1986)-  38 20 22.86004(N)    075 44 23.12697(W) AD(       ) 2
 HU2173  NGVD 29               6.06   (m)           19.9    (f) LEVELING    3  
 HU2173  NGVD 29 (06/12/91)    6.062  (m)           19.89   (f) ADJUSTED    2 1
 HU2173
 HU2173.Superseded values are not recommended for survey control.
 HU2173
 HU2173.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2173.See file dsdata.pdf to determine how the superseded data were derived.
 HU2173
 HU2173_MARKER: DZ = AZIMUTH MARK DISK
 HU2173_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2173_STAMPING: GOLF 1932 N0 2 1986
 HU2173_MARK LOGO: NGS
 HU2173_PROJECTION: FLUSH
 HU2173_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2173_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2173+STABILITY: SURFACE MOTION
 HU2173_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2173+SATELLITE: SATELLITE OBSERVATIONS - April 25, 2019
 HU2173
 HU2173  HISTORY     - Date     Condition        Report By
 HU2173  HISTORY     - 1986     MONUMENTED       NGS
 HU2173  HISTORY     - 1986     GOOD             NGS
 HU2173  HISTORY     - 19900312 GOOD             NGS
 HU2173  HISTORY     - 20190425 GOOD             PROFLN
 HU2173
 HU2173                          STATION DESCRIPTION
 HU2173
 HU2173'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HU2173'THE STATION IS LOCATED ABOUT 13.4 KM (8.3 MI) WEST-SOUTHWEST OF
 HU2173'SALISBURY AND 3.7 KM (2.3 MI) SOUTH OF QUANTICO.  OWNERSHIP--ROAD
 HU2173'RIGHT-OF-WAY.
 HU2173'
 HU2173'TO REACH THE STATION FROM THE POST OFFICE AT SALISBURY, GO WEST FOR
 HU2173'2.8 KM (1.7 MI) ON U.S. HIGHWAY 50 TO A SIDE ROAD LEFT.  TURN LEFT AND
 HU2173'GO WEST FOR 10.6 KM (6.6 MI) ON MD 349 TO A SIDE ROAD LEFT.  TURN LEFT
 HU2173'AND GO SOUTHWEST FOR 2.25 KM (1.40 MI) ON MD 352 TO THE STATION ON THE
 HU2173'LEFT.
 HU2173'
 HU2173'THE STATION IS A STANDARD NATIONAL GEODETIC SURVEY DISK STAMPED---GOLF
 HU2173'1932 NO 2 1986---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM
 HU2173'(12 INCHES) IN DIAMETER FLUSH WITH THE GROUND.  LOCATED 26.4 M
 HU2173'(86.6 FT) SOUTHWEST FROM THE SOUTHWEST CORNER OF A PORCH ON A ONE
 HU2173'STORY HOUSE, 16.2 M (53.1 FT) SOUTHWEST FROM A 33 CM (13 INCHES) PINE
 HU2173'TREE, 7.0 M (23.0 FT) SOUTHEAST FROM THE CENTER OF MD 352 AND 23.3 M
 HU2173'(76.4 FT) SOUTHEAST FROM A POWER LINE POLE NUMBERED 42811 92231.  THE
 HU2173'UNDERGROUND MARK IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2173'STAMPED---GOLF 1932 NO 2 1986---, SET INTO AN IRREGULAR MASS OF
 HU2173'CONCRETE 1.0 M (3.3 FT) BELOW THE SURFACE.
 HU2173
 HU2173                          STATION RECOVERY (1986)
 HU2173
 HU2173'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 HU2173'RECOVERED IN GOOD CONDITION.
 HU2173
 HU2173                          STATION RECOVERY (1990)
 HU2173
 HU2173'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU2173'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE JUNCTION
 HU2173'OF CHERRY WALK ROAD IN QUANTICO, THENCE 1.7 KM (1.06 MI) SOUTHERLY
 HU2173'ALONG NEBO POINT ROAD, THENCE 0.4 KM (0.25 MI) SOUTHWESTERLY ALONG
 HU2173'STATE HIGHWAY 352, 26.4 M (86.61 FT) WEST OF THE WEST CORNER OF A
 HU2173'HOUSE, 23.3 M (76.44 FT) EAST OF UTILITY POLE NUMBER 42811 92231, 7.0
 HU2173'M (22.97 FT) SOUTHEAST OF THE CENTERLINE OF THE HIGHWAY, 6.7 M (21.98
 HU2173'FT) SOUTHWEST OF THE CENTER OF A DRIVEWAY, LEVEL WITH THE HIGHWAY,
 HU2173'AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU2173
 HU2173                          STATION RECOVERY (2019)
 HU2173
 HU2173'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2173'THE MARK IS ABOUT 1.3 MI (2.1 KM) SOUTHWEST ALONG RIGHT 352,
 HU2173'WHITEHAVEN ROAD FROM THE JUNCTION OF RIGHT 349, NANTICOKE ROAD.  IT IS
 HU2173'IN LINE WITH 4 LARGE PINE TREES TO THE SOUTHEAST AND 95 FT (29.0 M)
 HU2173'NORTHWEST OF THE ONE CLOSEST TO THE ROAD, 187 FT (57.0 M) SOUTHWEST OF
 HU2173'A POINT OPPOSITE POWER POLE 42828-92251 WITH TRANSFORMER, 184 FT (56.1
 HU2173'M) SOUTHWEST OF A POINT OPPOSITE UTILITY PEDESTAL 44, 171 FT (52.1 M)
 HU2173'SOUTHWEST OF A SMALL POWER LINE CROSSING, 76 FT (23.2 M) EASTERLY
 HU2173'DIAGONAL TO THE ROAD FROM POWER POLE 42811-92231, 60 FT (18.3 M)
 HU2173'NORTHEAST ALONG THE ROAD FROM A POINT OPPOSITE THAT POLE, 46 FT (14.0
 HU2173'M) SOUTHWEST ALONG THE ROAD FROM A POINT OPPOSITE A DRIVEWAY, 38 FT
 HU2173'(11.6 M) SOUTHWEST OF THE SOUTHWEST LINE EXTENDED OF A RED BARN, 8 FT
 HU2173'(2.4 M) SOUTHEAST OF THE SOUTHEAST EDGE OF PAVEMENT, 0.5 FT (15 CM)
 HU2173'LOWER THAN THE ROAD.  THE HOUSE MENTIONED IN 1990 IS GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2172 ***********************************************************************
 HU2172  DESIGNATION -  GOLF RESET
 HU2172  PID         -  HU2172
 HU2172  STATE/COUNTY-  MD/WICOMICO
 HU2172  COUNTRY     -  US
 HU2172  USGS QUAD   -  EDEN (2016)
 HU2172
 HU2172                         *CURRENT SURVEY CONTROL
 HU2172  ______________________________________________________________________
 HU2172* NAD 83(1991) POSITION- 38 20 39.04605(N) 075 44 19.63111(W)   ADJUSTED
 HU2172* NAVD 88 ORTHO HEIGHT -     5.607 (meters)       18.40  (feet) ADJUSTED
 HU2172  ______________________________________________________________________
 HU2172  GEOID HEIGHT    -        -35.755 (meters)                     GEOID18
 HU2172  LAPLACE CORR    -         -1.38  (seconds)                    DEFLEC18
 HU2172  DYNAMIC HEIGHT  -          5.603 (meters)       18.38  (feet) COMP
 HU2172  MODELED GRAVITY -    980,003.2   (mgal)                       NAVD 88
 HU2172
 HU2172  HORZ ORDER      -  SECOND
 HU2172  VERT ORDER      -  SECOND    CLASS I
 HU2172
 HU2172.The horizontal coordinates were established by classical geodetic methods
 HU2172.and adjusted by the National Geodetic Survey in January 1992.
 HU2172
 HU2172.The orthometric height was determined by differential leveling and
 HU2172.adjusted by the NATIONAL GEODETIC SURVEY
 HU2172.in June 1991.
 HU2172
 HU2172.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2172.GEOID18 height accuracy estimate available here.
 HU2172
 HU2172.Click photographs - Photos may exist for this station.
 HU2172
 HU2172.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2172
 HU2172.The dynamic height is computed by dividing the NAVD 88
 HU2172.geopotential number by the normal gravity value computed on the
 HU2172.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2172.degrees latitude (g = 980.6199 gals.).
 HU2172
 HU2172.The modeled gravity was interpolated from observed gravity values.
 HU2172
 HU2172. The following values were computed from the NAD 83(1991) position.
 HU2172
 HU2172;                    North         East     Units Scale Factor Converg.
 HU2172;SPC MD       -    75,968.482   510,251.439   MT  0.99999261   +0 47 29.7
 HU2172;SPC MD       -   249,239.93  1,674,049.93   sFT  0.99999261   +0 47 29.7
 HU2172;UTM  18      - 4,244,261.794   435,440.433   MT  0.99965133   -0 27 30.0
 HU2172
 HU2172!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2172!SPC MD       -   1.00000473  x   0.99999261  =   0.99999734
 HU2172!UTM  18      -   1.00000473  x   0.99965133  =   0.99965606
 HU2172
 HU2172:                Primary Azimuth Mark                     Grid Az
 HU2172:SPC MD       -  GOLF AZ MK 2                             188 48 06.9
 HU2172:UTM  18      -  GOLF AZ MK 2                             190 03 06.6
 HU2172
 HU2172_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3544044261(NAD 83)
 HU2172
 HU2172|---------------------------------------------------------------------|
 HU2172| PID    Reference Object                     Distance      Geod. Az  |
 HU2172|                                                           dddmmss.s |
 HU2172| DC7320 GOLF RM 2                                          01815     |
 HU2172| DC7319 GOLF RM 1                                          10413     |
 HU2172| HU2173 GOLF AZ MK 2                        APPROX. 0.5 KM 1893536.6 |
 HU2172| CS6540 GOLF RM 3                            38.987 METERS 20202     |
 HU2172| CS6541 GOLF RM 4                            49.948 METERS 26048     |
 HU2172|---------------------------------------------------------------------|
 HU2172
 HU2172                          SUPERSEDED SURVEY CONTROL
 HU2172
 HU2172  NAD 83(1986)-  38 20 39.04082(N)    075 44 19.65441(W) AD(       ) 2
 HU2172  NAD 27      -  38 20 38.62500(N)    075 44 20.91000(W) AD(       ) 2
 HU2172  NGVD 29               5.86   (m)           19.2    (f) LEVELING    3  
 HU2172  NGVD 29 (06/12/91)    5.861  (m)           19.23   (f) ADJUSTED    2 1
 HU2172
 HU2172.Superseded values are not recommended for survey control.
 HU2172
 HU2172.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2172.See file dsdata.pdf to determine how the superseded data were derived.
 HU2172
 HU2172_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2172_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2172_STAMPING: GOLF 1932 1986
 HU2172_MARK LOGO: NGS
 HU2172_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2172_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2172+STABILITY: SURFACE MOTION
 HU2172_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2172+SATELLITE: SATELLITE OBSERVATIONS - February 08, 1990
 HU2172
 HU2172  HISTORY     - Date     Condition        Report By
 HU2172  HISTORY     - 1986     MONUMENTED       NGS
 HU2172  HISTORY     - 1986     GOOD             NGS
 HU2172  HISTORY     - 19900208 GOOD             NGS
 HU2172
 HU2172                          STATION DESCRIPTION
 HU2172
 HU2172'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HU2172'THE STATION IS LOCATED ABOUT 12.9 KM (8.0 MI) WEST-SOUTHWEST OF
 HU2172'SALISBURY AND 3.2 KM (2.0 MI) SOUTH OF QUANTICO.  OWNERSHIP--CLEARENCE
 HU2172'JACKSON, ROUTE 1 BOX 285A, QUANTICO MARYLAND ZIP CODE 21856.
 HU2172'
 HU2172'TO REACH THE STATION FROM THE POST OFFICE IN SALISBURY, GO WEST FOR
 HU2172'2.8 KM (1.7 MI) ON U.S. HIGHWAY 50 TO A SIDE ROAD LEFT.  TURN LEFT AND
 HU2172'GO WEST FOR 10.6 KM (6.6 MI) ON MD 349 TO A SIDE ROAD LEFT.  TURN LEFT
 HU2172'AND GO SOUTH FOR 1.85 KM (1.15 MI) ON MD 352 TO A SIDE ROAD RIGHT.
 HU2172'TURN RIGHT AND GO WEST FOR 0.15 KM (0.09 MI) ON NEBO ROAD TO THE
 HU2172'STATION ON THE RIGHT.
 HU2172'
 HU2172'THE STATION IS A STANDARD NATIONAL GEODETIC SURVEY DISK STAMPED---GOLF
 HU2172'1932 1986---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM
 HU2172'(12 INCHES) IN DIAMETER FLUSH WITH THE GROUND.  LOCATED 42.1 M
 HU2172'(138.1 FT) SOUTH-SOUTHEAST FROM THE SOUTHEAST CORNER OF A TWO STORY
 HU2172'HOUSE, 34.1 M (111.9 FT) SOUTHEAST FROM A 36 CM (14 INCHES) APPLE
 HU2172'TREE, 50.2 M (164.7 FT) EAST-NORTHEAST FROM THE CENTER OF NEBO ROAD,
 HU2172'3.2 M (10.5 FT) NORTHWEST FROM A 25 CM (10 INCHES) MAPLE TREE AND 0.7
 HU2172'M (2.3 FT) NORTHWEST FROM A WITNESS POST.  THE UNDERGROUND MARK IS A
 HU2172'STANDARD NATIONAL GEODETIC SURVEY DISK STAMPED---GOLF 1932 1986---,
 HU2172'SET INTO AN IRREGULAR MASS OF CONCRETE 1.0 M (3.3 FT) BELOW THE
 HU2172'SURFACE.
 HU2172'
 HU2172'REFERENCE MARK NO. 3 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2172'STAMPED---GOLF 1932 NO 3 1986---, SET INTO THE TOP OF A ROUND CONCRETE
 HU2172'MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND.  LOCATED
 HU2172'14.1 M (46.3 FT) EAST-NORTHEAST FROM THE CENTER OF NEBO ROAD, 44.5 M
 HU2172'(146.0 FT) SOUTHEAST FROM A POWER LINE POLE NUMBERED 42828 92325, 16.2
 HU2172'M (53.1 FT) SOUTHWEST FROM A 66 CM (26 INCHES) PINE TREE AND 38.8 M
 HU2172'(127.3 FT) SOUTHWEST FROM THE WITNESS POST.  MARK IS 0.6 M (2.0 FT)
 HU2172'ABOVE THE STATION.
 HU2172'
 HU2172'REFERENCE MARK NO. 4 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2172'STAMPED---GOLF 1932 NO 4 1986---, SET INTO THE TOP OF A ROUND CONCRETE
 HU2172'MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND.  LOCATED
 HU2172'4.1 M (13.5 FT) NORTHEAST FROM A POWER LINE POLE NUMBERED 42828 92325,
 HU2172'9.7 M (31.8 FT) EAST-NORTHEAST FROM THE CENTER OF NEBO ROAD, 3.1 M
 HU2172'(10.2 FT) SOUTHEAST FROM THE CENTER OF A PRIVATE DRIVE 16.2 M
 HU2172'(53.1 FT) SOUTHWEST FROM A POWER LINE POLE NUMBERED 42837 92403.  MARK
 HU2172'IS 0.2 M (0.7 FT) ABOVE THE STATION.
 HU2172'
 HU2172'AZIMUTH MARK NO. 2 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2172'STAMPED---GOLF 1932 NO 2 1986---, SET INTO THE TOP OF A ROUND CONCRETE
 HU2172'MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND.  LOCATED
 HU2172'26.4 M (86.6 FT) SOUTHWEST FROM THE SOUTHWEST CORNER OF A ONE STORY
 HU2172'HOUSE, 16.2 M (53.1 FT) SOUTHWEST FROM A 33 CM (13 INCHES) PINE TREE,
 HU2172'7.0 M (23.0 FT) SOUTHEAST FROM THE CENTER OF MD 352 AND 23.3 M
 HU2172'(76.4 FT) EAST-SOUTHEAST FROM A POWER LINE POLE NUMBERED 42811 92231.
 HU2172'TO REACH THE AZIMUTH FROM THE STATION, GO EAST FOR 0.15 KM (0.09 MI)
 HU2172'ON NEBO ROAD TO A T-INTERSECTION.  TURN RIGHT AND GO SOUTHWEST FOR
 HU2172'0.4 KM (0.2 MI) ON MD 352 TO THE MARK ON THE LEFT.  THE UNDERGROUND
 HU2172'MARK IS A STANDARD NATIONAL GEODETIC SURVEY DISK STAMPED---GOLF 1932
 HU2172'NO 4 1986---, SET INTO AN IRREGULAR MASS OF CONCRETE 3.2 M (10.5 FT)
 HU2172'BELOW THE SURFACE.
 HU2172
 HU2172                          STATION RECOVERY (1986)
 HU2172
 HU2172'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 HU2172'RECOVERED IN GOOD CONDITION.
 HU2172
 HU2172                          STATION RECOVERY (1990)
 HU2172
 HU2172'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU2172'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM ITS JUNCTION
 HU2172'WITH CHERRY WALK ROAD IN QUANTICO, THENCE 1.5 KM (0.93 MI) SOUTHERLY
 HU2172'ALONG NEBO ROAD, 50.2 M (164.70 FT) NORTHEAST OF AND LEVEL WITH THE
 HU2172'ROAD CENTER, 42.1 M (138.12 FT) SOUTHEAST OF THE SOUTH CORNER OF A 2
 HU2172'STORY HOUSE, 0.7 M (2.30 FT) NORTHWEST OF A WITNESS POST, AND IN A
 HU2172'CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9406 ***********************************************************************
 DR9406  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9406  DESIGNATION -  GOLTS
 DR9406  PID         -  DR9406
 DR9406  STATE/COUNTY-  MD/KENT
 DR9406  COUNTRY     -  US
 DR9406  USGS QUAD   -  MILLINGTON (2016)
 DR9406
 DR9406                         *CURRENT SURVEY CONTROL
 DR9406  ______________________________________________________________________
 DR9406* NAD 83(2011) POSITION- 39 20 13.04300(N) 075 46 31.84999(W)   ADJUSTED
 DR9406* NAD 83(2011) ELLIP HT-   -10.125 (meters)        (09/18/23)   ADJUSTED
 DR9406* NAD 83(2011) EPOCH   -  2010.00
 DR9406* NAVD 88 ORTHO HEIGHT -    23.48  (meters)       77.0   (feet) GPS OBS
 DR9406  ______________________________________________________________________
 DR9406  GEOID HEIGHT    -        -33.614 (meters)                     GEOID18
 DR9406  NAD 83(2011) X  -  1,213,789.423 (meters)                     COMP
 DR9406  NAD 83(2011) Y  - -4,788,243.390 (meters)                     COMP
 DR9406  NAD 83(2011) Z  -  4,021,313.045 (meters)                     COMP
 DR9406  LAPLACE CORR    -         -1.19  (seconds)                    DEFLEC18
 DR9406
 DR9406  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9406  Standards:
 DR9406         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9406            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9406  -------------------------------------------------------------------
 DR9406  NETWORK    0.59   1.39           0.26   0.22   0.71     -0.00258483
 DR9406  -------------------------------------------------------------------
 DR9406  Click here for local accuracies and other accuracy information.
 DR9406
 DR9406.The horizontal coordinates were established by GPS observations
 DR9406.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9406
 DR9406.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9406.been affixed to the stable North American tectonic plate. See 
 DR9406.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9406
 DR9406.The horizontal coordinates are valid at the epoch date displayed above
 DR9406.which is a decimal equivalence of Year/Month/Day.
 DR9406
 DR9406.The orthometric height was determined by GPS observations and a
 DR9406.high-resolution geoid model using precise GPS observation and
 DR9406.processing techniques.
 DR9406
 DR9406.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9406.GEOID18 height accuracy estimate available here.
 DR9406
 DR9406.Click photographs - Photos may exist for this station.
 DR9406
 DR9406.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9406
 DR9406.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9406
 DR9406.The ellipsoidal height was determined by GPS observations
 DR9406.and is referenced to NAD 83.
 DR9406
 DR9406. The following values were computed from the NAD 83(2011) position.
 DR9406
 DR9406;                    North         East     Units Scale Factor Converg.
 DR9406;SPC MD       -   186,121.320   505,562.836   MT  0.99998218   +0 46 06.7
 DR9406;SPC MD       -   610,633.03  1,658,667.40   sFT  0.99998218   +0 46 06.7
 DR9406;UTM  18      - 4,354,456.798   433,166.161   MT  0.99965500   -0 29 29.8
 DR9406
 DR9406!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9406!SPC MD       -   1.00000159  x   0.99998218  =   0.99998377
 DR9406!UTM  18      -   1.00000159  x   0.99965500  =   0.99965659
 DR9406
 DR9406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3316654456(NAD 83)
 DR9406
 DR9406                          SUPERSEDED SURVEY CONTROL
 DR9406
 DR9406.No superseded survey control is available for this station.
 DR9406
 DR9406_MARKER: DD = SURVEY DISK
 DR9406_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9406_STAMPING: GOLTS 2021
 DR9406_MARK LOGO: MD-029
 DR9406_PROJECTION: FLUSH
 DR9406_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9406_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9406+STABILITY: SURFACE MOTION
 DR9406_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9406+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9406
 DR9406  HISTORY     - Date     Condition        Report By
 DR9406  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9406
 DR9406                          STATION DESCRIPTION
 DR9406
 DR9406'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9406'THE MARK IS LOCATED ABOUT 18.0 MI (29.0 KM) EAST-NORTHEAST OF
 DR9406'CHESTERTOWN, 6.4 MI (10.3 KM) NORTH-NORTHEAST OF MILLINGTON, 5.6 MI
 DR9406'(9.0 KM) EAST OF GALENA AND 3.3 MI (5.3 KM) NORTHEAST OF MASSEY.
 DR9406'
 DR9406'TO REACH THE MARK FROM THE JUNCTION OF US 301 S AND MD 313, GO
 DR9406'EAST-SOUTHEAST ON MD 313 FOR 1.42 MI (2.28 KM) TO AN INTERSECTION.
 DR9406'TURN LEFT AND GO NORTH-NORTHEAST ON MD 299 N FOR 2.30 MI (3.70 KM) TO
 DR9406'AN INTERSECTION.  TURN RIGHT AND GO EAST-SOUTHEAST ON GOLTS ROAD FOR
 DR9406'2.28 MI (3.67 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DR9406'EAST-SOUTHEAST ON BRADFORD JOHNSON ROAD FOR 0.02 MI (0.03 KM) TO THE
 DR9406'MARK ON THE LEFT.
 DR9406'
 DR9406'THE MARK IS 101.4 FT (30.9 M) SOUTHEAST OF THE INTERSECTION OF GOLTS
 DR9406'ROAD AND BRADFORD JOHNSON ROAD, 95.0 FT (29.0 M) EAST OF A UTILITY
 DR9406'POLE NUMBERED CHOPTANK 162-33-38, 55.5 FT (16.9 M) SOUTHEAST OF A STOP
 DR9406'SIGN, 31.3 FT (9.5 M) NORTHWEST OF THE INTERSECTION OF RAIL ROAD
 DR9406'TRACKS AND BRADFORD JOHNSON ROAD, 15.5 FT (4.7 M) NORTHEAST OF THE
 DR9406'CENTERLINE OF BRADFORD JOHNSON ROAD SET IN THE TOP OF A 12-IN (30 CM)
 DR9406'ROUND CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9407 ***********************************************************************
 DR9407  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9407  DESIGNATION -  GOLTS AZ MK
 DR9407  PID         -  DR9407
 DR9407  STATE/COUNTY-  MD/KENT
 DR9407  COUNTRY     -  US
 DR9407  USGS QUAD   -  MILLINGTON (2016)
 DR9407
 DR9407                         *CURRENT SURVEY CONTROL
 DR9407  ______________________________________________________________________
 DR9407* NAD 83(2011) POSITION- 39 20 17.42887(N) 075 46 28.78692(W)   ADJUSTED
 DR9407* NAD 83(2011) ELLIP HT-   -10.853 (meters)        (09/18/23)   ADJUSTED
 DR9407* NAD 83(2011) EPOCH   -  2010.00
 DR9407* NAVD 88 ORTHO HEIGHT -    22.75  (meters)       74.6   (feet) GPS OBS
 DR9407  ______________________________________________________________________
 DR9407  GEOID HEIGHT    -        -33.613 (meters)                     GEOID18
 DR9407  NAD 83(2011) X  -  1,213,839.322 (meters)                     COMP
 DR9407  NAD 83(2011) Y  - -4,788,141.710 (meters)                     COMP
 DR9407  NAD 83(2011) Z  -  4,021,417.195 (meters)                     COMP
 DR9407  LAPLACE CORR    -         -1.19  (seconds)                    DEFLEC18
 DR9407
 DR9407  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9407  Standards:
 DR9407         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9407            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9407  -------------------------------------------------------------------
 DR9407  NETWORK    0.59   1.45           0.26   0.22   0.74     -0.02019847
 DR9407  -------------------------------------------------------------------
 DR9407  Click here for local accuracies and other accuracy information.
 DR9407
 DR9407.The horizontal coordinates were established by GPS observations
 DR9407.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9407
 DR9407.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9407.been affixed to the stable North American tectonic plate. See 
 DR9407.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9407
 DR9407.The horizontal coordinates are valid at the epoch date displayed above
 DR9407.which is a decimal equivalence of Year/Month/Day.
 DR9407
 DR9407.The orthometric height was determined by GPS observations and a
 DR9407.high-resolution geoid model using precise GPS observation and
 DR9407.processing techniques.
 DR9407
 DR9407.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9407.GEOID18 height accuracy estimate available here.
 DR9407
 DR9407.Click photographs - Photos may exist for this station.
 DR9407
 DR9407.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9407
 DR9407.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9407
 DR9407.The ellipsoidal height was determined by GPS observations
 DR9407.and is referenced to NAD 83.
 DR9407
 DR9407. The following values were computed from the NAD 83(2011) position.
 DR9407
 DR9407;                    North         East     Units Scale Factor Converg.
 DR9407;SPC MD       -   186,257.547   505,634.368   MT  0.99998235   +0 46 08.6
 DR9407;SPC MD       -   611,079.97  1,658,902.09   sFT  0.99998235   +0 46 08.6
 DR9407;UTM  18      - 4,354,591.375   433,240.647   MT  0.99965487   -0 29 27.9
 DR9407
 DR9407!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9407!SPC MD       -   1.00000170  x   0.99998235  =   0.99998405
 DR9407!UTM  18      -   1.00000170  x   0.99965487  =   0.99965657
 DR9407
 DR9407_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3324054591(NAD 83)
 DR9407
 DR9407                          SUPERSEDED SURVEY CONTROL
 DR9407
 DR9407.No superseded survey control is available for this station.
 DR9407
 DR9407_MARKER: DD = SURVEY DISK
 DR9407_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9407_STAMPING: GOLTS AZ 2021
 DR9407_MARK LOGO: MD-029
 DR9407_PROJECTION: FLUSH
 DR9407_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9407_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9407+STABILITY: SURFACE MOTION
 DR9407
 DR9407  HISTORY     - Date     Condition        Report By
 DR9407  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9407
 DR9407                          STATION DESCRIPTION
 DR9407
 DR9407'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9407'THE MARK IS LOCATED ABOUT 18.0 MI (29.0 KM) EAST-NORTHEAST OF
 DR9407'CHESTERTOWN, 6.5 MI (10.5 KM) NORTH-NORTHEAST OF MILLINGTON, 5.6 MI
 DR9407'(9.0 KM) EAST OF GALENA AND 3.4 MI (5.5 KM) NORTHEAST OF MASSEY.
 DR9407'
 DR9407'TO REACH THE MARK FROM THE JUNCTION OF US 301 S AND MD 313, GO
 DR9407'EAST-SOUTHEAST ON MD 313 FOR 1.42 MI (2.28 KM) TO AN INTERSECTION.
 DR9407'TURN LEFT AND GO NORTH-NORTHEAST ON MD 299 N FOR 2.30 MI (3.70 KM) TO
 DR9407'AN INTERSECTION.  TURN RIGHT AND GO EAST-SOUTHEAST ON GOLTS ROAD FOR
 DR9407'2.34 MI (3.77 KM) TO THE MARK ON THE RIGHT.
 DR9407'
 DR9407'THE MARK IS 114.4 FT (34.9 M) NORTHEAST OF A UTILITY POLE NUMBERED
 DR9407'WITH NO NUMBER ON THE WEST SIDE OF GOLTS ROAD, 112.9 FT (34.4 M)
 DR9407'NORTHEAST OF A UTILITY POLE NUMBERED WITH NO NUMBER ON THE EAST SIDE
 DR9407'OF GOLTS ROAD, 34.7 FT (10.6 M) SOUTH OF A SOUTHWESTERN GATE POST,
 DR9407'22.4 FT (6.8 M) SOUTHEAST OF THE CENTERLINE OF GOLTS CALDWELL ROAD SET
 DR9407'IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND ABOUT LEVEL WITH
 DR9407'THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3618 ***********************************************************************
 JV3618  DESIGNATION -  GOOD RESET
 JV3618  PID         -  JV3618
 JV3618  STATE/COUNTY-  MD/WASHINGTON
 JV3618  COUNTRY     -  US
 JV3618  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3618
 JV3618                         *CURRENT SURVEY CONTROL
 JV3618  ______________________________________________________________________
 JV3618* NAD 83(1991) POSITION- 39 37 26.21723(N) 077 45 20.60038(W)   ADJUSTED
 JV3618* NAVD 88 ORTHO HEIGHT -   188.722 (meters)      619.17  (feet) ADJUSTED
 JV3618  ______________________________________________________________________
 JV3618  GEOID HEIGHT    -        -34.186 (meters)                     GEOID18
 JV3618  LAPLACE CORR    -          3.54  (seconds)                    DEFLEC18
 JV3618  DYNAMIC HEIGHT  -        188.610 (meters)      618.80  (feet) COMP
 JV3618  MODELED GRAVITY -    980,031.6   (mgal)                       NAVD 88
 JV3618
 JV3618  HORZ ORDER      -  SECOND
 JV3618  VERT ORDER      -  SECOND    CLASS 0
 JV3618
 JV3618.The horizontal coordinates were established by classical geodetic methods
 JV3618.and adjusted by the National Geodetic Survey in January 1992.
 JV3618
 JV3618.The orthometric height was determined by differential leveling and
 JV3618.adjusted by the NATIONAL GEODETIC SURVEY
 JV3618.in June 1991.
 JV3618
 JV3618.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3618.GEOID18 height accuracy estimate available here.
 JV3618
 JV3618.Click photographs - Photos may exist for this station.
 JV3618
 JV3618.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3618
 JV3618.The dynamic height is computed by dividing the NAVD 88
 JV3618.geopotential number by the normal gravity value computed on the
 JV3618.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3618.degrees latitude (g = 980.6199 gals.).
 JV3618
 JV3618.The modeled gravity was interpolated from observed gravity values.
 JV3618
 JV3618. The following values were computed from the NAD 83(1991) position.
 JV3618
 JV3618;                    North         East     Units Scale Factor Converg.
 JV3618;SPC MD       -   217,545.411   335,111.813   MT  1.00003506   -0 28 27.5
 JV3618;SPC MD       -   713,730.24  1,099,446.01   sFT  1.00003506   -0 28 27.5
 JV3618;SPC PA S     -    32,268.869   599,508.648   MT  1.00006277   -0 00 13.4
 JV3618;SPC PA S     -   105,868.78  1,966,887.96   sFT  1.00006277   -0 00 13.4
 JV3618;SPC WV N     -   126,231.468   749,746.168   MT  0.99994074   +1 06 44.8
 JV3618;SPC WV N     -   414,144.41  2,459,792.22   sFT  0.99994074   +1 06 44.8
 JV3618;UTM  18      - 4,389,649.740   263,469.904   MT  1.00028885   -1 45 29.8
 JV3618
 JV3618!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3618!SPC MD       -   0.99997576  x   1.00003506  =   1.00001082
 JV3618!SPC PA S     -   0.99997576  x   1.00006277  =   1.00003852
 JV3618!SPC WV N     -   0.99997576  x   0.99994074  =   0.99991650
 JV3618!UTM  18      -   0.99997576  x   1.00028885  =   1.00026460
 JV3618
 JV3618:                Primary Azimuth Mark                     Grid Az
 JV3618:SPC MD       -  HAGERSTOWN RADIO STA WARK MAST           085 55 31.9
 JV3618:SPC PA S     -  HAGERSTOWN RADIO STA WARK MAST           085 27 17.8
 JV3618:SPC WV N     -  HAGERSTOWN RADIO STA WARK MAST           084 20 19.6
 JV3618:UTM  18      -  HAGERSTOWN RADIO STA WARK MAST           087 12 34.2
 JV3618
 JV3618_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6346989649(NAD 83)
 JV3618
 JV3618|---------------------------------------------------------------------|
 JV3618| PID    Reference Object                     Distance      Geod. Az  |
 JV3618|                                                           dddmmss.s |
 JV3618| CJ9885 GOOD RM 3                            11.728 METERS 01647     |
 JV3618| JV3542 GOOD RM 1                            11.730 METERS 01648     |
 JV3618| JV4705 HAGERSTOWN RADIO STA WARK MAST      APPROX. 3.9 KM 0852704.4 |
 JV3618| CJ9886 GOOD RM 4                             4.267 METERS 16314     |
 JV3618| JV3549 GOOD RM 2                            17.880 METERS 20931     |
 JV3618|---------------------------------------------------------------------|
 JV3618
 JV3618                          SUPERSEDED SURVEY CONTROL
 JV3618
 JV3618  NAD 83(1986)-  39 37 26.21681(N)    077 45 20.61042(W) AD(       ) 2
 JV3618  NAD 27      -  39 37 25.86860(N)    077 45 21.63330(W) AD(       ) 2
 JV3618  NGVD 29             188.93   (m)          619.8    (f) LEVELING    3  
 JV3618  NGVD 29 (11/26/84)  188.934  (m)          619.86   (f) ADJUSTED    2 0
 JV3618
 JV3618.Superseded values are not recommended for survey control.
 JV3618
 JV3618.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3618.See file dsdata.pdf to determine how the superseded data were derived.
 JV3618
 JV3618_MARKER: DH = HORIZONTAL CONTROL DISK
 JV3618_SETTING: 66 = SET IN ROCK OUTCROP
 JV3618_STAMPING: GOOD 1958 1974
 JV3618_MARK LOGO: NGS
 JV3618_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3618+STABILITY: POSITION/ELEVATION WELL
 JV3618
 JV3618  HISTORY     - Date     Condition        Report By
 JV3618  HISTORY     - 1957     MONUMENTED       CGS
 JV3618  HISTORY     - 1958     GOOD             CGS
 JV3618  HISTORY     - 1974     SEE DESCRIPTION  NGS
 JV3618  HISTORY     - 20040326 MARK NOT FOUND   DEWDAV
 JV3618  HISTORY     - 20071229 POOR             GEOCAC
 JV3618  HISTORY     - 20080211 POOR             GEOCAC
 JV3618
 JV3618                          STATION DESCRIPTION
 JV3618
 JV3618'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV3618'STATION IS LOCATED ABOUT 2-1/2 MILES SOUTHWEST OF THE CENTER
 JV3618'OF HAGERSTOWN, ABOUT 0.25 MILE SOUTH OF SOUTHWEST CORNER OF
 JV3618'HAGERSTOWN CITY LIMITS AND ABOUT 0.15 MILE WEST OF U.S. HIGHWAY
 JV3618'NO. 11.  STATION IS SET IN OUTCROPPING ROCK AT THE TOP OF A
 JV3618'SMALL KNOLL ABOUT 200 YARDS NORTH-NORTHWEST OF A WHITE BARN.  THE
 JV3618'MARK IS SET FLUSH AND THE DISK IS STAMPED GOOD 1957.
 JV3618'
 JV3618'REFERENCE MARK NO. 1 IS SET IN OUTCROPPING ROCK ABOUT 200
 JV3618'YARDS NORTH-NORTHWEST OF WHITE BARN.  THE MARK IS SET FLUSH AND
 JV3618'THE DISK IS STAMPED GOOD NO 1 1957.
 JV3618'
 JV3618'REFERENCE MARK NO. 2 IS SET IN OUTCROPPING ROCK AT THE
 JV3618'NORTHWEST EDGE OF NARROW STRIP OF PLOWED FIELD.  THE MARK IS SET
 JV3618'FLUSH AND THE DISK IS STAMPED GOOD NO 2 1957.
 JV3618'
 JV3618'TO REACH FROM THE SIGNAL LIGHT AT THE JUNCTION OF U.S. HIGHWAY
 JV3618'40 (WEST) AND U.S. HIGHWAY NO. 11 (SOUTH) GO SOUTH ON U.S. HIGHWAY
 JV3618'NO. 11 FOR 1.3 MILES TO RAILROAD CROSSING.  CONTINUE SOUTH
 JV3618'ON U.S. HIGHWAY NO. 11 FOR 1.0 MILE TO SHELL GAS STATION ON
 JV3618'RIGHT (NORTHWEST) SIDE OF HIGHWAY.  CONTINUE SOUTHERLY ON
 JV3618'U.S. HIGHWAY NO. 11 FOR 100 YARDS TO DRIVEWAY RIGHT AT A BRICK
 JV3618'HOUSE ON RIGHT (NORTHWEST) SIDE OF HIGHWAY.  TURN RIGHT AND GO
 JV3618'WESTERLY ON DRIVEWAY FOR 0.05 MILE TO BARN.  TURN RIGHT AROUND
 JV3618'WEST END OF BARN AND GO WESTERLY ON TRACK ROAD FOR 0.1 MILE
 JV3618'TO TOP OF SMALL KNOLL AND STATION AS DESCRIBED.
 JV3618'
 JV3618'NOTE--STATION LANE IS VISIBLE FROM GROUND AND MAY BE USED
 JV3618'AS AN AZIMUTH MARK.
 JV3618'
 JV3618'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV3618
 JV3618                          STATION RECOVERY (1958)
 JV3618
 JV3618'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV3618'2.2 MI SW FROM HAGERSTOWN.
 JV3618'2.1 MILES SOUTHWEST ALONG U.S. HIGHWAY 11 FROM THE COURTHOUSE AT
 JV3618'HAGERSTOWN, THENCE 0.05 MILE NORTHWEST ALONG A PRIVATE DRIVEWAY,
 JV3618'THENCE 0.1 MILE NORTH ACROSS COUNTRY, ON THE HIGHEST POINT OF A LOW
 JV3618'HILL, AND IN THE CENTER OF A ROCK OUTCROP FLUSH WITH THE GROUND.
 JV3618
 JV3618                          STATION RECOVERY (1974)
 JV3618
 JV3618'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV3618'THE STATION AND ALL MARKS WERE FOUND DESTROYED.  THE DISKS
 JV3618'APPEARED TO HAVE BEEN CUT OFF OF THE STEM.  NO TRACE OF
 JV3618'REFERENCE MARK 2 WAS FOUND.  THE CENTER OF THE STEMS WHICH
 JV3618'WAS FOUND WAS HELD AS A POINT AND A NEW STATION DISK AND A
 JV3618'NEW REFERENCE MARK DISK WAS PLACED IN THE OLD HOLES.  THE
 JV3618'DISTANCE AND DIRECTION TO REFERENCE MARK 3 WHICH WAS PLACED IN
 JV3618'THE OLD HOLE FOR REFERENCE MARK 1.  TRAVERSE STATION LANE 1958 IS
 JV3618'NO LONGER VISIBLE FROM THE GROUND.  INTERSECTION STATION
 JV3618'HAGERSTOWN RADIO STATION WARK MAST 1958 MAY BE USED AS AN
 JV3618'AZIMUTH FOR THIS STATION.
 JV3618'
 JV3618'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS--
 JV3618'
 JV3618'THE STATION IS LOCATED ON A LOW HILL ABOUT 2-1/2 MILES SOUTH
 JV3618'OF HAGERSTOWN AND JUST EAST OF HALFWAY BLVD.  THIS STATION
 JV3618'IS BELIEVED TO BE ON OR VERY NEAR CITY RIGHT-OF-WAY.  NO PROPERTY
 JV3618'OWNER WAS CONTACTED.
 JV3618'
 JV3618'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAYS 11 AND 40 IN
 JV3618'HAGERSTOWN, GO SOUTHERLY ON U.S. HIGHWAY 11 FOR 1.3 MILES TO A
 JV3618'RAILROAD CROSSING.  CONTINUE SOUTHERLY ON U.S. HIGHWAY 11 FOR 1.1
 JV3618'MILE TO A CROSSROADS.  TURN RIGHT AND GO WESTERLY ON HALFWAY
 JV3618'BOULEVARD FOR 0.2 MILE TO A SMALL HILL ON THE RIGHT AND THE
 JV3618'STATION.
 JV3618'
 JV3618'THE STATION MARK IS A STANDARD DISK STAMPED GOOD 1958 1974,
 JV3618'CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK WHICH IS FLUSH
 JV3618'WITH THE SURFACE.  IT IS 200 YARDS WEST-SOUTHWEST OF A BARN, 200
 JV3618'FEET SOUTHWEST OF A LONG ROCK WALL AND 50 FEET NORTHWEST OF THE
 JV3618'CENTER OF HALFWAY BLVD. (NOTE 2)
 JV3618'
 JV3618'REFERENCE MARK 3 IS A STANDARD DISK STAMPED GOOD 1958 NO 3
 JV3618'1974, CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK WHICH
 JV3618'PROJECTS 8-INCHES.  IT IS 80 FEET NORTHEAST OF THE CENTER OF
 JV3618'THE ROAD AND ABOUT 150 FEET SOUTHWEST OF THE ROCK WALL.  (NOTE
 JV3618'12A)
 JV3618'
 JV3618'REFERENCE MARK 4 IS A STANDARD DISK STAMPED GOOD 1958 NO 4
 JV3618'1974, CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK WHICH
 JV3618'IS FLUSH WITH THE SURFACE.  IT IS 50 FEET NORTHEAST OF THE CENTER
 JV3618'OF HALFWAY BLVD.  (NOTE 12A)
 JV3618'
 JV3618'DUE TO STATION IN GRASSY HILLSIDE NO WITNESS POST WAS SET.
 JV3618'
 JV3618'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV3618'2-1/2 MILES SOUTH OF HAGERSTOWN.
 JV3618
 JV3618                          STATION RECOVERY (2004)
 JV3618
 JV3618'RECOVERY NOTE BY DEWBERRY DAVIS 2004 (KEC)
 JV3618'MARK NOT FOUND.
 JV3618
 JV3618                          STATION RECOVERY (2007)
 JV3618
 JV3618'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JV3618'DRILL HOLE WAS RECOVERED - STATION DISK AND STEM ARE MISSING.
 JV3618'
 JV3618'REFERENCE MARK 3 WAS FOUND IN POOR CONDITION - DISK IS MISSING, BUT
 JV3618'STEM REMAINS.
 JV3618'
 JV3618'REFERENCE MARK 4 APPEARS TO HAVE BEEN DESTROYED BY CONSTRUCTION.
 JV3618
 JV3618                          STATION RECOVERY (2008)
 JV3618
 JV3618'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3618'THE DISKS ARE MISSING, BUT THE STEMS FOR GOOD RESET AND RM 3 ARE
 JV3618'PRESENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3542 ***********************************************************************
 JV3542  DESIGNATION -  GOOD RM 1
 JV3542  PID         -  JV3542
 JV3542  STATE/COUNTY-  MD/WASHINGTON
 JV3542  COUNTRY     -  US
 JV3542  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3542
 JV3542                         *CURRENT SURVEY CONTROL
 JV3542  ______________________________________________________________________
 JV3542* NAD 83(1986) POSITION- 39 37 26.58   (N) 077 45 20.46   (W)   HD_HELD1
 JV3542* NAVD 88 ORTHO HEIGHT -   189.110 (meters)      620.44  (feet) ADJUSTED
 JV3542  ______________________________________________________________________
 JV3542  GEOID HEIGHT    -        -34.186 (meters)                     GEOID18
 JV3542  DYNAMIC HEIGHT  -        188.998 (meters)      620.07  (feet) COMP
 JV3542  MODELED GRAVITY -    980,031.6   (mgal)                       NAVD 88
 JV3542
 JV3542  VERT ORDER      -  SECOND    CLASS 0
 JV3542
 JV3542.The horizontal coordinates were determined by differentially corrected
 JV3542.hand held GPS observations or other comparable positioning techniques
 JV3542.and have an estimated accuracy of +/- 3 meters.
 JV3542
 JV3542.The orthometric height was determined by differential leveling and
 JV3542.adjusted by the NATIONAL GEODETIC SURVEY
 JV3542.in June 1991.
 JV3542
 JV3542.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3542.GEOID18 height accuracy estimate available here.
 JV3542
 JV3542.Click photographs - Photos may exist for this station.
 JV3542
 JV3542.The dynamic height is computed by dividing the NAVD 88
 JV3542.geopotential number by the normal gravity value computed on the
 JV3542.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3542.degrees latitude (g = 980.6199 gals.).
 JV3542
 JV3542.The modeled gravity was interpolated from observed gravity values.
 JV3542
 JV3542;                    North         East    Units  Estimated Accuracy
 JV3542;SPC MD       -   217,556.6     335,115.3     MT  (+/- 3 meters HH1 GPS) 
 JV3542
 JV3542_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6347389660(NAD 83)
 JV3542
 JV3542                          SUPERSEDED SURVEY CONTROL
 JV3542
 JV3542  NGVD 29 (11/26/84)  189.322  (m)          621.13   (f) ADJUSTED    2 0
 JV3542
 JV3542.Superseded values are not recommended for survey control.
 JV3542
 JV3542.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3542.See file dsdata.pdf to determine how the superseded data were derived.
 JV3542
 JV3542_MARKER: DR = REFERENCE MARK DISK
 JV3542_SETTING: 66 = SET IN ROCK OUTCROP
 JV3542_STAMPING: GOOD NO 1 1957
 JV3542_MARK LOGO: CGS
 JV3542_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3542+STABILITY: POSITION/ELEVATION WELL
 JV3542
 JV3542  HISTORY     - Date     Condition        Report By
 JV3542  HISTORY     - 1957     MONUMENTED       CGS
 JV3542  HISTORY     - 1958     GOOD             CGS
 JV3542  HISTORY     - 20071229 POOR             GEOCAC
 JV3542  HISTORY     - 20080211 POOR             GEOCAC
 JV3542
 JV3542                          STATION DESCRIPTION
 JV3542
 JV3542'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3542'2.2 MI SW FROM HAGERSTOWN.
 JV3542'2.1 MILES SOUTHWEST ALONG U.S. HIGHWAY 11 FROM THE COURTHOUSE AT
 JV3542'HAGERSTOWN, THENCE 0.05 MILE NORTHWEST ALONG A PRIVATE DRIVEWAY,
 JV3542'THENCE 0.1 MILE NORTH ACROSS COUNTRY, ON THE HIGHEST POINT OF A
 JV3542'LOW HILL, 200 YARDS NORTH-NORTHWEST OF A WHITE BARN, AND 38.48
 JV3542'FEET NORTH-NORTHEAST OF THE TRIANGULATION STATION.  A STANDARD
 JV3542'REFERENCE-MARK DISK, STAMPED GOOD NO 1 1957 AND SET IN OUTCROPPING
 JV3542'ROCK FLUSH WITH THE GROUND.
 JV3542
 JV3542                          STATION RECOVERY (2007)
 JV3542
 JV3542'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JV3542'DRILL HOLE AND STEM BELONGING TO REFERENCE MARK 3 (WHICH WAS PLACED IN
 JV3542'THE ORIGINAL DRILL HOLE BELONGING TO THIS REFERENCE MARK IN 1974) WERE
 JV3542'RECOVERED - DISK IS MISSING.
 JV3542
 JV3542                          STATION RECOVERY (2008)
 JV3542
 JV3542'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3542'THE DISKS ARE MISSING, BUT THE STEMS FOR GOOD RM 3 (FORMERLY RM 1)AND
 JV3542'GOOD RESET ARE PRESENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3549 ***********************************************************************
 JV3549  DESIGNATION -  GOOD RM 2
 JV3549  PID         -  JV3549
 JV3549  STATE/COUNTY-  MD/WASHINGTON
 JV3549  COUNTRY     -  US
 JV3549  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3549
 JV3549                         *CURRENT SURVEY CONTROL
 JV3549  ______________________________________________________________________
 JV3549* NAD 83(1986) POSITION- 39 37 25.71   (N) 077 45 20.97   (W)   HD_HELD1
 JV3549* NAVD 88 ORTHO HEIGHT -   187.940 (meters)      616.60  (feet) ADJUSTED
 JV3549  ______________________________________________________________________
 JV3549  GEOID HEIGHT    -        -34.186 (meters)                     GEOID18
 JV3549  DYNAMIC HEIGHT  -        187.829 (meters)      616.24  (feet) COMP
 JV3549  MODELED GRAVITY -    980,031.5   (mgal)                       NAVD 88
 JV3549
 JV3549  VERT ORDER      -  SECOND    CLASS 0
 JV3549
 JV3549.The horizontal coordinates were determined by differentially corrected
 JV3549.hand held GPS observations or other comparable positioning techniques
 JV3549.and have an estimated accuracy of +/- 3 meters.
 JV3549
 JV3549.The orthometric height was determined by differential leveling and
 JV3549.adjusted by the NATIONAL GEODETIC SURVEY
 JV3549.in June 1991.
 JV3549
 JV3549.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3549.GEOID18 height accuracy estimate available here.
 JV3549
 JV3549.Click photographs - Photos may exist for this station.
 JV3549
 JV3549.The dynamic height is computed by dividing the NAVD 88
 JV3549.geopotential number by the normal gravity value computed on the
 JV3549.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3549.degrees latitude (g = 980.6199 gals.).
 JV3549
 JV3549.The modeled gravity was interpolated from observed gravity values.
 JV3549
 JV3549;                    North         East    Units  Estimated Accuracy
 JV3549;SPC MD       -   217,529.8     335,102.9     MT  (+/- 3 meters HH1 GPS) 
 JV3549
 JV3549_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6346089634(NAD 83)
 JV3549
 JV3549                          SUPERSEDED SURVEY CONTROL
 JV3549
 JV3549  NGVD 29 (11/26/84)  188.152  (m)          617.30   (f) ADJUSTED    2 0
 JV3549
 JV3549.Superseded values are not recommended for survey control.
 JV3549
 JV3549.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3549.See file dsdata.pdf to determine how the superseded data were derived.
 JV3549
 JV3549_MARKER: DR = REFERENCE MARK DISK
 JV3549_SETTING: 66 = SET IN ROCK OUTCROP
 JV3549_STAMPING: GOOD NO 2 1957
 JV3549_MARK LOGO: CGS
 JV3549_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3549+STABILITY: POSITION/ELEVATION WELL
 JV3549
 JV3549  HISTORY     - Date     Condition        Report By
 JV3549  HISTORY     - 1957     MONUMENTED       CGS
 JV3549  HISTORY     - 1958     GOOD             CGS
 JV3549  HISTORY     - 20071229 MARK NOT FOUND   GEOCAC
 JV3549  HISTORY     - 20080211 MARK NOT FOUND   GEOCAC
 JV3549
 JV3549                          STATION DESCRIPTION
 JV3549
 JV3549'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3549'2.2 MI SW FROM HAGERSTOWN.
 JV3549'2.1 MILES SOUTHWEST ALONG U.S. HIGHWAY 11 FROM THE COURTHOUSE AT
 JV3549'HAGERSTOWN, THENCE 0.05 MILE NORTHWEST ALONG A PRIVATE DRIVEWAY,
 JV3549'THENCE 0.1 MILE NORTH ACROSS COUNTRY, ON THE HIGHEST POINT OF A
 JV3549'LOW HILL, 58.66 FEET SOUTHWEST OF THE TRIANGULATION STATION, AT
 JV3549'THE NORTHWEST EDGE OF A NARROW STRIP OF PLOWED FIELD, AND SET IN
 JV3549'OUTCROPPING ROCK FLUSH WITH THE GROUND.  A STANDARD REFERENCE-MARK
 JV3549'DISK, STAMPED GOOD NO 2 1957.
 JV3549
 JV3549                          STATION RECOVERY (2007)
 JV3549
 JV3549'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JV3549'MARK APPEARS TO HAVE BEEN DESTROYED BY CONSTRUCTION.
 JV3549
 JV3549                          STATION RECOVERY (2008)
 JV3549
 JV3549'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3549'POSSIBLY DESTROYED DURING WIDENING OF HALFWAY BLVD. IN 1998.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2064 ***********************************************************************
 HU2064  DESIGNATION -  GOOSE
 HU2064  PID         -  HU2064
 HU2064  STATE/COUNTY-  MD/TALBOT
 HU2064  COUNTRY     -  US
 HU2064  USGS QUAD   -  EAST NEW MARKET (2016)
 HU2064
 HU2064                         *CURRENT SURVEY CONTROL
 HU2064  ______________________________________________________________________
 HU2064* NAD 83(1991) POSITION- 38 35 45.57266(N) 075 59 57.71261(W)   ADJUSTED
 HU2064* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU2064  ______________________________________________________________________
 HU2064  GEOID HEIGHT    -        -35.120 (meters)                     GEOID18
 HU2064  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 HU2064  HORZ ORDER      -  THIRD
 HU2064
 HU2064.The horizontal coordinates were established by classical geodetic methods
 HU2064.and adjusted by the National Geodetic Survey in January 1992.
 HU2064
 HU2064.The orthometric height was scaled from a topographic map.
 HU2064
 HU2064.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2064.GEOID18 height accuracy estimate available here.
 HU2064
 HU2064.Click photographs - Photos may exist for this station.
 HU2064
 HU2064.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2064
 HU2064. The following values were computed from the NAD 83(1991) position.
 HU2064
 HU2064;                    North         East     Units Scale Factor Converg.
 HU2064;SPC MD       -   103,636.517   487,167.139   MT  0.99996171   +0 37 40.9
 HU2064;SPC MD       -   340,014.14  1,598,314.19   sFT  0.99996171   +0 37 40.9
 HU2064;UTM  18      - 4,272,418.477   412,972.319   MT  0.99969327   -0 37 24.5
 HU2064
 HU2064!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2064!SPC MD       -   1.00000555  x   0.99996171  =   0.99996726
 HU2064!UTM  18      -   1.00000555  x   0.99969327  =   0.99969882
 HU2064
 HU2064:                Primary Azimuth Mark                     Grid Az
 HU2064:SPC MD       -  JAMAICA                                  032 55 53.3
 HU2064:UTM  18      -  JAMAICA                                  034 10 58.7
 HU2064
 HU2064_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1297272418(NAD 83)
 HU2064
 HU2064|---------------------------------------------------------------------|
 HU2064| PID    Reference Object                     Distance      Geod. Az  |
 HU2064|                                                           dddmmss.s |
 HU2064| HU2077 JAMAICA                             APPROX. 2.0 KM 0333334.2 |
 HU2064|---------------------------------------------------------------------|
 HU2064
 HU2064                          SUPERSEDED SURVEY CONTROL
 HU2064
 HU2064  NAD 83(1986)-  38 35 45.56937(N)    075 59 57.73037(W) AD(       ) 3
 HU2064  NAD 27      -  38 35 45.13400(N)    075 59 58.93900(W) AD(       ) 3
 HU2064  USSD        -  38 35 45.53600(N)    075 59 58.74300(W) AD(       ) 3
 HU2064
 HU2064.Superseded values are not recommended for survey control.
 HU2064
 HU2064.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2064.See file dsdata.pdf to determine how the superseded data were derived.
 HU2064
 HU2064_MARKER: N = NAIL
 HU2064_SETTING: 33 = WOODEN OBJECT (DRIVEN IN A PILE, POLE, TREE OR STUMP)
 HU2064_SP_SET: CEDAR POST
 HU2064_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU2064
 HU2064  HISTORY     - Date     Condition        Report By
 HU2064  HISTORY     - 1900     MONUMENTED       CGS
 HU2064  HISTORY     - 1961     MARK NOT FOUND   CGS
 HU2064
 HU2064                          STATION DESCRIPTION
 HU2064
 HU2064'DESCRIBED BY COAST AND GEODETIC SURVEY 1900 (FFW)
 HU2064'ON THE NW SHORE OF CHOPTANK RIVER, ON GOOSE POINT, ON A SAND BEACH
 HU2064'AMONG WATER BUSHES BETWEEN MARSH AND SHORE, ABOUT 150 METERS N OF
 HU2064'WOODS, AND 100 METERS S OF A FENCE.  MARKED BY A NAIL IN A 6-INCH
 HU2064'CEDAR POST 2 FEET LONG WITH TOP EVEN WITH SURFACE OF GROUND.
 HU2064
 HU2064                          STATION RECOVERY (1961)
 HU2064
 HU2064'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HU2064'STATION NOT RECOVERED.  STATION MARKED BY A NAIL IN A CEDAR STUB
 HU2064'SET EVEN WITH THE GROUND.  RECOMMEND THIS STATION BE CONSIDERED
 HU2064'AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5087 ***********************************************************************
 JV5087  DESIGNATION -  GOOSE
 JV5087  PID         -  JV5087
 JV5087  STATE/COUNTY-  MD/KENT
 JV5087  COUNTRY     -  US
 JV5087  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5087
 JV5087                         *CURRENT SURVEY CONTROL
 JV5087  ______________________________________________________________________
 JV5087* NAD 83(1991) POSITION- 39 06 01.30780(N) 076 13 03.07100(W)   ADJUSTED
 JV5087* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5087  ______________________________________________________________________
 JV5087  GEOID HEIGHT    -        -33.451 (meters)                     GEOID18
 JV5087  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 JV5087  HORZ ORDER      -  THIRD
 JV5087
 JV5087.The horizontal coordinates were established by classical geodetic methods
 JV5087.and adjusted by the National Geodetic Survey in January 1992.
 JV5087
 JV5087.The orthometric height was scaled from a topographic map.
 JV5087
 JV5087.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5087.GEOID18 height accuracy estimate available here.
 JV5087
 JV5087.Click photographs - Photos may exist for this station.
 JV5087
 JV5087.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5087
 JV5087. The following values were computed from the NAD 83(1991) position.
 JV5087
 JV5087;                    North         East     Units Scale Factor Converg.
 JV5087;SPC MD       -   159,437.754   467,683.884   MT  0.99995751   +0 29 28.0
 JV5087;SPC MD       -   523,088.70  1,534,392.88   sFT  0.99995751   +0 29 28.0
 JV5087;UTM  18      - 4,328,619.627   394,720.295   MT  0.99973648   -0 46 04.6
 JV5087
 JV5087!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5087!SPC MD       -   1.00000513  x   0.99995751  =   0.99996264
 JV5087!UTM  18      -   1.00000513  x   0.99973648  =   0.99974161
 JV5087
 JV5087:                Primary Azimuth Mark                     Grid Az
 JV5087:SPC MD       -  PRUSSIAN                                 340 39 57.0
 JV5087:UTM  18      -  PRUSSIAN                                 341 55 29.6
 JV5087
 JV5087_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9472028619(NAD 83)
 JV5087
 JV5087|---------------------------------------------------------------------|
 JV5087| PID    Reference Object                     Distance      Geod. Az  |
 JV5087|                                                           dddmmss.s |
 JV5087| JV5070 CUT                                 397.660 METERS 06320     |
 JV5087| JV5075 PRUSSIAN                            489.397 METERS 3410925.0 |
 JV5087|---------------------------------------------------------------------|
 JV5087
 JV5087                          SUPERSEDED SURVEY CONTROL
 JV5087
 JV5087  NAD 83(1986)-  39 06 01.30251(N)    076 13 03.08263(W) AD(       ) 3
 JV5087  NAD 27      -  39 06 00.89900(N)    076 13 04.23800(W) AD(       ) 3
 JV5087  USSD        -  39 06 01.29200(N)    076 13 04.08600(W) AD(       ) 3
 JV5087
 JV5087.Superseded values are not recommended for survey control.
 JV5087
 JV5087.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5087.See file dsdata.pdf to determine how the superseded data were derived.
 JV5087
 JV5087_MARKER: H = DRILL HOLE
 JV5087_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5087_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5087+STABILITY: SURFACE MOTION
 JV5087
 JV5087  HISTORY     - Date     Condition        Report By
 JV5087  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5087  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV5087
 JV5087                          STATION DESCRIPTION
 JV5087
 JV5087'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5087'STATION IS ON THE WESTERN SHORE OF UPPER GRAYS INN CREEK, ABOUT
 JV5087'1-1/4 MILES NW OF CHESTER RIVER, ON POINT BETWEEN BROWNS COVE AND
 JV5087'GOOSE COVE, IN A CULTIVATED FIELD, AT EDGE OF PEACH ORCHARD, ABOUT
 JV5087'12 FEET ABOVE HIGH WATER, 8 YARDS SW OF SHORE, 6 YARDS SW OF TOP
 JV5087'OF VERTICAL BANK, AND 1 YARD N OF ROW OF PEACH TREES.
 JV5087'
 JV5087'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5087'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5087'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5087'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5087'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV5087'INCHES BELOW THE BASE OF THE MONUMENT.
 JV5087'
 JV5087'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5087'FOLLOWS--NAIL IN BLAZE IN 6-INCH PEACH TREE, 10.42 METERS (34.2
 JV5087'FEET), S 50 DEG 08 MIN W.  E GABLE OF BARN, 3/4 MILE, N 50 DEG 25
 JV5087'MIN W.  NAIL IN BLAZE IN 5-INCH LOCUST TREE, 14.47 METERS (47.5
 JV5087'FEET), N 30 DEG 43 MIN W. STACK OF LEARYS SAWMILL, 1-1/8 MILES, N 25
 JV5087'DEG 28 MIN W. E GABLE OF HOUSE, 1-1/2 MILES, N 18 DEG 02 MIN W. W
 JV5087'CHIMNEY OF HOUSE, 1-1/4 MILES, N 12 DEG 42 MIN E. NAIL IN BLAZE IN
 JV5087'6-INCH LOCUST TREE, 5.32 METERS (17.45 FEET), N 17 DEG 18 MIN E. W
 JV5087'CHIMNEY OF HOUSE, 1 MILE, N 18 DEG 55 MIN E. LEFT TANGENT OF PILES OF
 JV5087'OLD WHARF, 3/8 MILE, N 20 DEG 00 MIN E. W CHIMNEY OF HOUSE, 1/2
 JV5087'MILE, N 68 DEG 30 MIN E. N POST OF HARRIS HAY SHED, 3/4 MILE,
 JV5087'S 41 DEG 56 MIN E.
 JV5087
 JV5087                          STATION RECOVERY (1939)
 JV5087
 JV5087'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5087'STATION NOT RECOVERED.  A THOROUGH SEARCH OF THE POINT AND BLUFF AND
 JV5087'WATER AREA ADJACENT FAILED TO RECOVER THE MONUMENT.  THE PEACH
 JV5087'ORCHARD IS NOT NOW EVIDENT.  THE 10-FOOT BLUFF ALONG THE NE SIDE OF
 JV5087'THE POINT IS WASHING AWAY RAPIDLY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6583 ***********************************************************************
 HV6583  DESIGNATION -  GOOSE 1908
 HV6583  PID         -  HV6583
 HV6583  STATE/COUNTY-  MD/ST MARYS
 HV6583  COUNTRY     -  US
 HV6583  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6583
 HV6583                         *CURRENT SURVEY CONTROL
 HV6583  ______________________________________________________________________
 HV6583* NAD 83(1993) POSITION- 38 08 07.75858(N) 076 28 38.61822(W)   ADJUSTED
 HV6583* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6583  ______________________________________________________________________
 HV6583  GEOID HEIGHT    -        -34.692 (meters)                     GEOID18
 HV6583  LAPLACE CORR    -         -5.99  (seconds)                    DEFLEC18
 HV6583  HORZ ORDER      -  THIRD
 HV6583
 HV6583.The horizontal coordinates were established by classical geodetic methods
 HV6583.and adjusted by the National Geodetic Survey in November 1994.
 HV6583
 HV6583.The orthometric height was scaled from a topographic map.
 HV6583
 HV6583.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6583.GEOID18 height accuracy estimate available here.
 HV6583
 HV6583.Click photographs - Photos may exist for this station.
 HV6583
 HV6583.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6583
 HV6583. The following values were computed from the NAD 83(1993) position.
 HV6583
 HV6583;                    North         East     Units Scale Factor Converg.
 HV6583;SPC MD       -    52,172.843   445,818.443   MT  1.00003269   +0 19 40.8
 HV6583;SPC MD       -   171,170.40  1,462,656.01   sFT  1.00003269   +0 19 40.8
 HV6583;SPC VA N     - 2,053,991.476 3,677,305.860   MT  0.99998354   +1 15 44.4
 HV6583;SPC VA N     - 6,738,803.70 12,064,627.64   sFT  0.99998354   +1 15 44.4
 HV6583;SPC VA S     - 1,201,904.295 3,677,315.794   MT  1.00003517   +1 13 39.3
 HV6583;SPC VA S     - 3,943,247.67 12,064,660.23   sFT  1.00003517   +1 13 39.3
 HV6583;UTM  18      - 4,221,878.878   370,524.327   MT  0.99980646   -0 54 44.8
 HV6583
 HV6583!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6583!SPC MD       -   1.00000549  x   1.00003269  =   1.00003818
 HV6583!SPC VA N     -   1.00000549  x   0.99998354  =   0.99998903
 HV6583!SPC VA S     -   1.00000549  x   1.00003517  =   1.00004066
 HV6583!UTM  18      -   1.00000549  x   0.99980646  =   0.99981194
 HV6583
 HV6583:                Primary Azimuth Mark                     Grid Az
 HV6583:SPC MD       -  CHERRY 1908                              133 51 13.4
 HV6583:SPC VA N     -  CHERRY 1908                              132 55 09.8
 HV6583:SPC VA S     -  CHERRY 1908                              132 57 14.9
 HV6583:UTM  18      -  CHERRY 1908                              135 05 39.0
 HV6583
 HV6583_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7052421878(NAD 83)
 HV6583
 HV6583|---------------------------------------------------------------------|
 HV6583| PID    Reference Object                     Distance      Geod. Az  |
 HV6583|                                                           dddmmss.s |
 HV6583| HV6576 CHERRY 1908                         APPROX. 1.2 KM 1341054.2 |
 HV6583|---------------------------------------------------------------------|
 HV6583
 HV6583                          SUPERSEDED SURVEY CONTROL
 HV6583
 HV6583  NAD 83(1991)-  38 08 07.75749(N)    076 28 38.62138(W) AD(       ) 3
 HV6583  NAD 83(1986)-  38 08 07.75872(N)    076 28 38.63443(W) AD(       ) 3
 HV6583  NAD 27      -  38 08 07.35100(N)    076 28 39.87600(W) AD(       ) 3
 HV6583  USSD        -  38 08 07.73500(N)    076 28 39.58900(W) AD(       ) 3
 HV6583
 HV6583.Superseded values are not recommended for survey control.
 HV6583
 HV6583.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6583.See file dsdata.pdf to determine how the superseded data were derived.
 HV6583
 HV6583_MARKER: H = DRILL HOLE
 HV6583_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6583_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6583+STABILITY: SURFACE MOTION
 HV6583
 HV6583  HISTORY     - Date     Condition        Report By
 HV6583  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6583  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6583
 HV6583                          STATION DESCRIPTION
 HV6583
 HV6583'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6583'STATION IS ON THE NORTHEASTERN SHORE OF ST. GEORGE RIVER,
 HV6583'ABOUT 3/4 MILE NW OF CHERRYFIELD POINT AND 1/4 MILE NW OF
 HV6583'ENTRANCE TO PRICE CREEK, ABOUT 1 FOOT ABOVE HIGH-WATER MARK,
 HV6583'AMONG CEDAR, PINE AND PERSIMMON TREES, 4 YARDS NE OF EDGE OF
 HV6583'LANE, 13 YARDS S OF CULTIVATED LAND BEYOND TREES, AND A FEW YARDS
 HV6583'NW OF FOUR LARGE PINE TREES AT EDGE OF WATER.
 HV6583'
 HV6583'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6583'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6583'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6583'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6583'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6583'FOLLOWS--CHIMNEY ON MIDDLE OF 2 1/2-STORY HOUSE, 7/8 MILE, S 24 DEG
 HV6583'09 MIN W.  NEAR FRONT PEAK OF 2 1/2-STORY HOUSE, 7/8 MILE, S 28
 HV6583'DEG 11 MIN W.  CHIMNEY OF STOREHOUSE, 7/8 MILE, S 48 DEG 39 MIN W.
 HV6583'SMOKE PIPE OF COTTAGE NEAR HIGH SCANT WOODS, 1 MILE, S 73 DEG
 HV6583'04 MIN W.  HIGH LONE PINE TREE ON ST. GEORGE ISLAND, 1-1/8
 HV6583'MILES, S 88 DEG 18 MIN W.  CHIMNEY ON 2 1/2-STORY HOUSE NEAR PINEY
 HV6583'POINT, 2-3/4 MILES, N 79 DEG 52 MIN W.  NAIL IN BLAZE IN
 HV6583'5-INCH CEDAR TREE, 8.74 METERS (28.67 FEET), N 51 DEG 43 MIN W.
 HV6583'NAIL IN BLAZE IN 8-INCH CEDAR TREE, 2.58 METERS (8.46
 HV6583'FEET), N 18 DEG 36 MIN W.  NAIL IN BLAZE IN 6-INCH CEDAR
 HV6583'TREE, 5.75 METERS (18.86 FEET), N 64 DEG 57 MIN E.  RIGHT PEAK OF
 HV6583'WHARF HOUSE, 1 MILE, N 37 DEG 12 MIN E.  TANGENT OF POINT, 250
 HV6583'YARDS, S 58 DEG 02 MIN E.  NAIL IN BLAZE IN 11-INCH PINE TREE,
 HV6583'8.08 METERS (26.51 FEET), S 38 DEG 12 MIN E.
 HV6583
 HV6583                          STATION RECOVERY (1958)
 HV6583
 HV6583'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6583'A THOROUGH SEARCH FOR THIS STATION BY TWO MEN FOR ONE HOUR
 HV6583'PROVED TO BE FRUITLESS.  THIS STATION SHOULD CONTINUE TO BE
 HV6583'CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8207 ***********************************************************************
 DH8207  HT_MOD      -  This is a Height Modernization Survey Station.
 DH8207  DESIGNATION -  GOOSE DAM
 DH8207  PID         -  DH8207
 DH8207  STATE/COUNTY-  MD/DORCHESTER
 DH8207  COUNTRY     -  US
 DH8207  USGS QUAD   -  TAYLORS ISLAND (2016)
 DH8207
 DH8207                         *CURRENT SURVEY CONTROL
 DH8207  ______________________________________________________________________
 DH8207* NAD 83(2011) POSITION- 38 28 37.80200(N) 076 15 45.97166(W)   ADJUSTED
 DH8207* NAD 83(2011) ELLIP HT-   -34.567 (meters)        (06/27/12)   ADJUSTED
 DH8207* NAD 83(2011) EPOCH   -  2010.00
 DH8207* NAVD 88 ORTHO HEIGHT -     0.14  (meters)        0.5   (feet) GPS OBS
 DH8207  ______________________________________________________________________
 DH8207  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DH8207  GEOID HEIGHT    -        -34.677 (meters)                     GEOID03
 DH8207  GEOID HEIGHT    -        -34.711 (meters)                     GEOID18
 DH8207  NAD 83(2011) X  -  1,187,256.671 (meters)                     COMP
 DH8207  NAD 83(2011) Y  - -4,856,605.669 (meters)                     COMP
 DH8207  NAD 83(2011) Z  -  3,947,023.998 (meters)                     COMP
 DH8207  LAPLACE CORR    -         -5.89  (seconds)                    DEFLEC18
 DH8207
 DH8207  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8207  Standards:
 DH8207         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8207            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8207  -------------------------------------------------------------------
 DH8207  NETWORK    0.84   1.80           0.37   0.31   0.92     -0.01751673
 DH8207  -------------------------------------------------------------------
 DH8207  Click here for local accuracies and other accuracy information.
 DH8207
 DH8207.The horizontal coordinates were established by GPS observations
 DH8207.and adjusted by the National Geodetic Survey in June 2012.
 DH8207
 DH8207.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8207.been affixed to the stable North American tectonic plate. See 
 DH8207.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8207
 DH8207.The horizontal coordinates are valid at the epoch date displayed above
 DH8207.which is a decimal equivalence of Year/Month/Day.
 DH8207
 DH8207.The orthometric height was determined by GPS observations and a
 DH8207.high-resolution geoid model using precise GPS observation and
 DH8207.processing techniques.
 DH8207
 DH8207.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8207.GEOID18 height accuracy estimate available here.
 DH8207
 DH8207.Click photographs - Photos may exist for this station.
 DH8207
 DH8207.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8207
 DH8207.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8207
 DH8207.The ellipsoidal height was determined by GPS observations
 DH8207.and is referenced to NAD 83.
 DH8207
 DH8207. The following values were computed from the NAD 83(2011) position.
 DH8207
 DH8207;                    North         East     Units Scale Factor Converg.
 DH8207;SPC MD       -    90,228.580   464,328.539   MT  0.99997390   +0 27 45.8
 DH8207;SPC MD       -   296,024.93  1,523,384.55   sFT  0.99997390   +0 27 45.8
 DH8207;UTM  18      - 4,259,515.169   389,852.364   MT  0.99974941   -0 47 08.8
 DH8207
 DH8207!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8207!SPC MD       -   1.00000542  x   0.99997390  =   0.99997932
 DH8207!UTM  18      -   1.00000542  x   0.99974941  =   0.99975483
 DH8207
 DH8207_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8985259515(NAD 83)
 DH8207
 DH8207                          SUPERSEDED SURVEY CONTROL
 DH8207
 DH8207  NAD 83(2007)-  38 28 37.80226(N)    076 15 45.97248(W) AD(2002.00) B
 DH8207  ELLIP H (02/12/09)  -34.548  (m)                       GP(2002.00) 5 1
 DH8207  NAD 83(1991)-  38 28 37.80242(N)    076 15 45.97209(W) AD(       ) B
 DH8207  ELLIP H (02/28/06)  -34.542  (m)                       GP(       ) 5 1
 DH8207
 DH8207.Superseded values are not recommended for survey control.
 DH8207
 DH8207.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8207.See file dsdata.pdf to determine how the superseded data were derived.
 DH8207
 DH8207_MARKER: I = METAL ROD
 DH8207_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DH8207_STAMPING: FOOTBRIDGE GOOSE DAM 2005
 DH8207_MARK LOGO: NONE
 DH8207_PROJECTION: RECESSED 10 CENTIMETERS
 DH8207_MAGNETIC: I = MARKER IS A STEEL ROD
 DH8207_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DH8207_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8207+SATELLITE: SATELLITE OBSERVATIONS - September 08, 2005
 DH8207_ROD/PIPE-DEPTH: 29.3 meters
 DH8207
 DH8207  HISTORY     - Date     Condition        Report By
 DH8207  HISTORY     - 20050908 MONUMENTED       NGS
 DH8207
 DH8207                          STATION DESCRIPTION
 DH8207
 DH8207'DESCRIBED BY NATIONAL GEODETIC SURVEY 2005 (FCM)
 DH8207'THIS MARK IS AT THE USGS WATER LEVEL GAGE AT THE NORTH END OF GOOSE
 DH8207'DAM AREA OF  BLACKWATER NATIONAL WILDLIFE REFUGE. TO ARRANGE ACCESS
 DH8207'(AIR BOAT PROBABLY NEEDED, ABOUT A 25-MINUTE RIDE FROM RT 335 PUT-IN),
 DH8207'CONTACT REFUGE HQ AS FAR IN ADVANCE AS  POSSIBLE AT 410-228-2692.
 DH8207'
 DH8207'THE MARK IS THE TOP CENTER OF A STAINLESS STEEL ROD UNDER A LOGO CAP
 DH8207'THAT HAS NO AGENCY  ID, WITHIN A 6-INCH PVC PIPE THAT IS SURROUNDED BY
 DH8207'CONCRETE COLLAR. THE ACCESS CAP IS HELD  IN PLACE BY A SLOTTED-HEAD
 DH8207'SCREW UNLESS THE SCREW GETS LOST.
 DH8207'
 DH8207'THE MARK IS 8 FT NORTHERLY FROM THE GALVANIZED PIPE SUPPORTING THE
 DH8207'WATER LEVEL GAGE,  ROUGHLY 6 FT NW OF STREAM BANK--NW EDGE OF
 DH8207'WATER--AND 6 FT SOUTHERLY FROM 1-INCH PVC  PIPE THAT WAS TAPED
 DH8207'TOGETHER FROM SHORT PIECES TO BE ABOUT 5 FT HIGH.
 DH8207'
 DH8207'THE LOGO CAP WAS FIRST STAMPED FOR THE FOOTBRIDGE MARK WHICH IS
 DH8207'SEVERAL MILES TO  THE SOUTHEAST AND REACHABLE BY JOHN BOAT, BUT IT
 DH8207'COULD NOT BE USED THERE. THEN THE  STAMPING FOR GOOSE DAM WAS ADDED.
 DH8207'THE PVC PIPE PROJECTS ROUGHLY 6 INCHES ABOVE  SURROUNDING GRASS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0703 ***********************************************************************
 HU0703  DESIGNATION -  GORDY
 HU0703  PID         -  HU0703
 HU0703  STATE/COUNTY-  MD/WORCESTER
 HU0703  COUNTRY     -  US
 HU0703  USGS QUAD   -  SALISBURY (2016)
 HU0703
 HU0703                         *CURRENT SURVEY CONTROL
 HU0703  ______________________________________________________________________
 HU0703* NAD 83(1991) POSITION- 38 15 58.95147(N) 075 31 15.67100(W)   ADJUSTED
 HU0703* NAVD 88 ORTHO HEIGHT -    17.109 (meters)       56.13  (feet) ADJUSTED
 HU0703  ______________________________________________________________________
 HU0703  GEOID HEIGHT    -        -36.032 (meters)                     GEOID18
 HU0703  LAPLACE CORR    -         -1.05  (seconds)                    DEFLEC18
 HU0703  DYNAMIC HEIGHT  -         17.099 (meters)       56.10  (feet) COMP
 HU0703  MODELED GRAVITY -    979,994.8   (mgal)                       NAVD 88
 HU0703
 HU0703  HORZ ORDER      -  FIRST
 HU0703  VERT ORDER      -  SECOND    CLASS I
 HU0703
 HU0703.The horizontal coordinates were established by classical geodetic methods
 HU0703.and adjusted by the National Geodetic Survey in January 1992.
 HU0703
 HU0703.The orthometric height was determined by differential leveling and
 HU0703.adjusted by the NATIONAL GEODETIC SURVEY
 HU0703.in June 1991.
 HU0703
 HU0703.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0703.GEOID18 height accuracy estimate available here.
 HU0703
 HU0703.Click photographs - Photos may exist for this station.
 HU0703
 HU0703.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0703
 HU0703.The dynamic height is computed by dividing the NAVD 88
 HU0703.geopotential number by the normal gravity value computed on the
 HU0703.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0703.degrees latitude (g = 980.6199 gals.).
 HU0703
 HU0703.The modeled gravity was interpolated from observed gravity values.
 HU0703
 HU0703. The following values were computed from the NAD 83(1991) position.
 HU0703
 HU0703;                    North         East     Units Scale Factor Converg.
 HU0703;SPC MD       -    67,618.904   529,426.310   MT  1.00000602   +0 55 41.7
 HU0703;SPC MD       -   221,846.35  1,736,959.49   sFT  1.00000602   +0 55 41.7
 HU0703;UTM  18      - 4,235,498.942   454,421.672   MT  0.99962558   -0 19 21.7
 HU0703
 HU0703!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0703!SPC MD       -   1.00000297  x   1.00000602  =   1.00000899
 HU0703!UTM  18      -   1.00000297  x   0.99962558  =   0.99962855
 HU0703
 HU0703:                Primary Azimuth Mark                     Grid Az
 HU0703:SPC MD       -  GORDY AZ MK                              272 07 08.5
 HU0703:UTM  18      -  GORDY AZ MK                              273 22 11.9
 HU0703
 HU0703_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5442135498(NAD 83)
 HU0703
 HU0703|---------------------------------------------------------------------|
 HU0703| PID    Reference Object                     Distance      Geod. Az  |
 HU0703|                                                           dddmmss.s |
 HU0703| HU2650 GORDY RM 3                           24.692 METERS 04851     |
 HU0703| HU0705 GORDY RM 1                           24.670 METERS 04851     |
 HU0703| HU2593 GORDY AZ MK 2                       APPROX. 0.5 KM 2730235.0 |
 HU0703| HU0702 GORDY AZ MK                                        2730250.2 |
 HU0703| HU0704 GORDY RM 2                           29.181 METERS 27956     |
 HU0703|---------------------------------------------------------------------|
 HU0703
 HU0703                          SUPERSEDED SURVEY CONTROL
 HU0703
 HU0703  NAD 83(1986)-  38 15 58.94329(N)    075 31 15.69799(W) AD(       ) 1
 HU0703  NAD 27      -  38 15 58.51500(N)    075 31 16.98300(W) AD(       ) 1
 HU0703  NGVD 29              17.35   (m)           56.9    (f) LEVELING    3  
 HU0703  NGVD 29              17.47   (m)           57.3    (f) LEVELING    3  
 HU0703  NGVD 29 (11/26/84)   17.353  (m)           56.93   (f) ADJUSTED    2 0
 HU0703
 HU0703.Superseded values are not recommended for survey control.
 HU0703
 HU0703.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0703.See file dsdata.pdf to determine how the superseded data were derived.
 HU0703
 HU0703_MARKER: DS = TRIANGULATION STATION DISK
 HU0703_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0703_STAMPING: GORDY 1942
 HU0703_MARK LOGO: CGS
 HU0703_PROJECTION: PROJECTING 10 CENTIMETERS
 HU0703_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0703+STABILITY: SURFACE MOTION
 HU0703_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0703+SATELLITE: SATELLITE OBSERVATIONS - October 17, 2019
 HU0703
 HU0703  HISTORY     - Date     Condition        Report By
 HU0703  HISTORY     - 1942     MONUMENTED       CGS
 HU0703  HISTORY     - 1962     GOOD             MDDT
 HU0703  HISTORY     - 1962     GOOD             CGS
 HU0703  HISTORY     - 1984     GOOD             NGS
 HU0703  HISTORY     - 20010411 GOOD             MDSHA
 HU0703  HISTORY     - 20191017 GOOD             BASE9
 HU0703
 HU0703                          STATION DESCRIPTION
 HU0703
 HU0703'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU0703'THE STATION IS LOCATED ABOUT MIDWAY BETWEEN SALISBURY AND SNOW
 HU0703'HILL AND 0.4 MILE BY ROAD S OF STATE HIGHWAY 12 IN THE YARD OF AN
 HU0703'UNUSED SCHOOL.  IT IS ABOUT 75 FEET NE OF THE NE CORNER OF THE
 HU0703'SCHOOL BUILDING, 45 FEET S OF THE CENTER OF THE DIRT ROAD AND ON A
 HU0703'SMALL KNOLL.  IT IS STAMPED GORDY 1942 AND PROJECTS ABOUT 4
 HU0703'INCHES.
 HU0703'
 HU0703'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HU0703'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HU0703'
 HU0703'REFERENCE MARK NO.1 IS LOCATED NE OF THE STATION AND ON THE
 HU0703'OPPOSITE SIDE OF THE ROAD.  IT IS STAMPED GORDY NO.1 1942.
 HU0703'
 HU0703'REFERENCE MARK NO.2 IS LOCATED W OF THE STATION, 20 FEET S OF
 HU0703'THE CENTER OF THE ROAD.  IT IS STAMPED GORDY NO.2 1942 AND
 HU0703'PROJECTS ABOUT 4 INCHES.
 HU0703'
 HU0703'THE AZIMUTH MARK IS LOCATED 0.35 MILE BY ROAD W OF THE STATION
 HU0703'AND ON THE N SIDE OF THE ROAD.  IT IS 15 FEET N OF THE CENTER OF
 HU0703'THE ROAD AND IS WITNESSED BY A WHITE POST THAT PROJECTS 2-1/2
 HU0703'FEET.  IT IS STAMPED GORDY 1942 AND PROJECTS ABOUT 6 INCHES.
 HU0703'
 HU0703'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 113 AND
 HU0703'STATE HIGHWAY 12 IN SNOW HILL GO NORTHWESTERLY ON STATE HIGHWAY
 HU0703'12 TOWARDS SALISBURY FOR 8.5 MILES TO A GRADED DIRT ROAD LEFT AT
 HU0703'A CLEARING IN THE WOODS.  (THIS POINT IS ABOUT 8.65 MILES SE OF
 HU0703'THE JUNCTION OF STATE HIGHWAY 12 AND U.S. HIGHWAY 213 IN
 HU0703'SALISBURY).  HERE TURN LEFT AND GO WESTERLY ON GRADED ROAD FOR
 HU0703'0.4 MILE TO AN OLD SCHOOLHOUSE AND THE STATION ON THE LEFT.
 HU0703'
 HU0703'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT MORRIS.
 HU0703'
 HU0703'A 90-FOOT TOWER WILL SEE A 126-FOOT LIGHT AT NASSAWANGO.
 HU0703'
 HU0703'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT MC GRATH.
 HU0703
 HU0703                          STATION RECOVERY (1962)
 HU0703
 HU0703'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1962
 HU0703'ALL MARKS FOUND IN GOOD CONDITION AS DESCRIBED.  THE AZIMUTH MARK
 HU0703'IS 42.5 FEET N OF A POWER POLE.
 HU0703
 HU0703                          STATION RECOVERY (1962)
 HU0703
 HU0703'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962
 HU0703'1.6 MI E FROM ST LUKE.
 HU0703'1.6 MILES EAST ALONG A DIRT ROAD FROM THE ROAD JUNCTION AT ST.
 HU0703'LUKE, WORCESTER COUNTY, 48.2 FEET NORTHEAST OF THE NORTHEAST
 HU0703'CORNER OF AN ABANDONED SCHOOLHOUSE, 64 FEET EAST OF THE CENTER
 HU0703'LINE OF THE DRIVEWAY, 38.1 FEET SOUTH OF THE CENTER LINE OF THE
 HU0703'ROAD, AND ABOUT 4.5 FEET HIGHER THAN THE ROAD.  A STANDARD
 HU0703'TRIANGULATION-STATION DISK, STAMPED GORDY 1942 AND SET IN THE TOP
 HU0703'OF A CONCRETE POST.
 HU0703
 HU0703                          STATION RECOVERY (1984)
 HU0703
 HU0703'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HU0703'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 50 AND 13 BUSINESS AT
 HU0703'SALISBURY , GO SOUTH ON U.S. HIGHWAY 13 BUSINESS ROUTE FOR 0.2 KM
 HU0703'(0.13 MI) TO A CROSSROAD. TURN LEFT AND GO EAST ON MAIN STREET FOR
 HU0703'0.24 KM (0.13 MI) TO A SIDE ROAD RIGHT. TURN RIGHT AND GO SOUTHEAST
 HU0703'ON STATE HIGHWAY 12 FOR 13.65 KM (8.5 MI) TO A CROSSROADS. TURN RIGHT
 HU0703'AND 60 WEST ON SAINT LUKES ROAD FOR 0.7 KM (0.45 MI) TO THE MARK ON
 HU0703'THE LEFT, 10.2 METERS (33.5 FT) SOUTH FROM THE CENTER OF SAINT LUKES
 HU0703'ROAD, 12.5 METERS (41.3 FT) EAST-SOUTHEAST FROM A POWERLINE POLE
 HU0703'NUMBERED 8-1/2, 25.3 METERS (83 FT) SOUTHEAST FROM A POWERLINE POLE
 HU0703'NUMBERED 731 207 AND 18.6' METERS (61 FT) EAST FROM THE CENTER OF A
 HU0703'DIRT ROAD LEADING SOUTH.
 HU0703
 HU0703                          STATION RECOVERY (2001)
 HU0703
 HU0703'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU0703'RECOVERED AS DESCRIBED.
 HU0703
 HU0703                          STATION RECOVERY (2019)
 HU0703
 HU0703'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2019 (DRD)
 HU0703'THE MARK IS LOCATED IN THE FRONT YARD OF HOUSE NUMBER 2332.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2593 ***********************************************************************
 HU2593  DESIGNATION -  GORDY AZ MK 2
 HU2593  PID         -  HU2593
 HU2593  STATE/COUNTY-  MD/WORCESTER
 HU2593  COUNTRY     -  US
 HU2593  USGS QUAD   -  SALISBURY (2016)
 HU2593
 HU2593                         *CURRENT SURVEY CONTROL
 HU2593  ______________________________________________________________________
 HU2593* NAD 83(1991) POSITION- 38 15 59.86882(N) 075 31 37.57182(W)   ADJUSTED
 HU2593* NAVD 88 ORTHO HEIGHT -    15.9   (meters)       52.    (feet) VERTCON3
 HU2593  ______________________________________________________________________
 HU2593  GEOID HEIGHT    -        -36.028 (meters)                     GEOID18
 HU2593  LAPLACE CORR    -         -1.06  (seconds)                    DEFLEC18
 HU2593  HORZ ORDER      -  SECOND
 HU2593
 HU2593.The horizontal coordinates were established by classical geodetic methods
 HU2593.and adjusted by the National Geodetic Survey in January 1992.
 HU2593
 HU2593.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2593.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2593
 HU2593.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2593.GEOID18 height accuracy estimate available here.
 HU2593
 HU2593.Click photographs - Photos may exist for this station.
 HU2593
 HU2593.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2593
 HU2593. The following values were computed from the NAD 83(1991) position.
 HU2593
 HU2593;                    North         East     Units Scale Factor Converg.
 HU2593;SPC MD       -    67,638.578   528,893.524   MT  1.00000597   +0 55 28.0
 HU2593;SPC MD       -   221,910.90  1,735,211.50   sFT  1.00000597   +0 55 28.0
 HU2593;UTM  18      - 4,235,530.231   453,889.645   MT  0.99962618   -0 19 35.2
 HU2593
 HU2593!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2593!SPC MD       -   1.00000316  x   1.00000597  =   1.00000913
 HU2593!UTM  18      -   1.00000316  x   0.99962618  =   0.99962933
 HU2593
 HU2593_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5388935530(NAD 83)
 HU2593
 HU2593                          SUPERSEDED SURVEY CONTROL
 HU2593
 HU2593  NAD 83(1986)-  38 15 59.86071(N)    075 31 37.59881(W) AD(       ) 2
 HU2593  NGVD 29 (03/28/90)   16.2    (m)           53.     (f) VERT ANG       
 HU2593
 HU2593.Superseded values are not recommended for survey control.
 HU2593
 HU2593.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2593.See file dsdata.pdf to determine how the superseded data were derived.
 HU2593
 HU2593_MARKER: DZ = AZIMUTH MARK DISK
 HU2593_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2593_STAMPING: GORDY 1942 NO 2 1984
 HU2593_MARK LOGO: NGS
 HU2593_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2593_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2593+STABILITY: SURFACE MOTION
 HU2593_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2593+SATELLITE: SATELLITE OBSERVATIONS - 1984
 HU2593
 HU2593  HISTORY     - Date     Condition        Report By
 HU2593  HISTORY     - 1984     MONUMENTED       NGS
 HU2593
 HU2593                          STATION DESCRIPTION
 HU2593
 HU2593'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2593'THE MARK IS LOCATED ABOUT 13.75 KM (8.55 MI) SOUTHEST OF SALISBURY,
 HU2593'15.25 KM (9.50 MI) NORTHWEST OF SNOW HILL AND 2.25 KM (1.40 MI) EAST
 HU2593'OF SAINT LUKES.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2593'TO REACH THE MARK FROM THE INTERSECTION OF U.S. HIGHWAY 13 BUSINESS
 HU2593'AND U.S. HIGHWAY 50 AT SALISBURY, GO SOUTH ON U.S. HIGHWAY 13 BUSINESS
 HU2593'FOR 0.2 KM (0.10 MI) TO A CROSSROADS.  TURN LEFT AND GO EAST ON MAIN
 HU2593'STREET FOR 0.2 KM (0.10 MI) TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO
 HU2593'SOUTHEAST ON STATE HIGHWAY 12 FOR 13.65 KM (8.50 MI) TO A SIDE ROAD
 HU2593'RIGHT.  TURN RIGHT AND GO WEST ON SAINT LUKES ROAD FOR 1.25 M
 HU2593'(0.75 MI) TO THE MARK ON THE RIGHT.
 HU2593'THE MARK IS SET IN THE TOP OF A 12-INCH ROUND CONCRETE POST FLUSH WITH
 HU2593'THE GROUND.  IT IS 5.1 M (16.7 FT) NORTH OF THE CENTER OF SAINT LUKES
 HU2593'ROAD, 16.2 M (53.1 FT) WEST OF THE CENTER OF A DIRT DRIVE LEADING
 HU2593'NORTH, 29.0 M (95.1 FT)  SOUTH-SOUTHEAST OF THE SOUTHWEST CORNER OF A
 HU2593'ONE STORY HOUSE, 12.9 M (42.3 FT) NORTH-NORTHWEST OF A POWERLINE POLE
 HU2593'NUMBERED 731 201 AND 13.7 M (44.9 FT) WEST-SOUTHWEST OF A 28-INCH OAK
 HU2593'TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0705 ***********************************************************************
 HU0705  DESIGNATION -  GORDY RM 1
 HU0705  PID         -  HU0705
 HU0705  STATE/COUNTY-  MD/WORCESTER
 HU0705  COUNTRY     -  US
 HU0705  USGS QUAD   -  SALISBURY (2016)
 HU0705
 HU0705                         *CURRENT SURVEY CONTROL
 HU0705  ______________________________________________________________________
 HU0705* NAD 83(1986) POSITION- 38 15 59.48   (N) 075 31 14.91   (W)   HD_HELD1
 HU0705* NAVD 88 ORTHO HEIGHT -    15.590 (meters)       51.15  (feet) ADJUSTED
 HU0705  ______________________________________________________________________
 HU0705  GEOID HEIGHT    -        -36.032 (meters)                     GEOID18
 HU0705  DYNAMIC HEIGHT  -         15.580 (meters)       51.12  (feet) COMP
 HU0705  MODELED GRAVITY -    979,994.8   (mgal)                       NAVD 88
 HU0705
 HU0705  VERT ORDER      -  SECOND    CLASS 0
 HU0705
 HU0705.The horizontal coordinates were determined by differentially corrected
 HU0705.hand held GPS observations or other comparable positioning techniques
 HU0705.and have an estimated accuracy of +/- 3 meters.
 HU0705
 HU0705.The orthometric height was determined by differential leveling and
 HU0705.adjusted by the NATIONAL GEODETIC SURVEY
 HU0705.in June 1991.
 HU0705
 HU0705.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0705.GEOID18 height accuracy estimate available here.
 HU0705
 HU0705.Click photographs - Photos may exist for this station.
 HU0705
 HU0705.The dynamic height is computed by dividing the NAVD 88
 HU0705.geopotential number by the normal gravity value computed on the
 HU0705.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0705.degrees latitude (g = 980.6199 gals.).
 HU0705
 HU0705.The modeled gravity was interpolated from observed gravity values.
 HU0705
 HU0705;                    North         East    Units  Estimated Accuracy
 HU0705;SPC MD       -    67,635.5     529,444.5     MT  (+/- 3 meters HH1 GPS) 
 HU0705
 HU0705_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5444035515(NAD 83)
 HU0705
 HU0705                          SUPERSEDED SURVEY CONTROL
 HU0705
 HU0705  NGVD 29 (11/26/84)   15.833  (m)           51.95   (f) ADJUSTED    2 0
 HU0705
 HU0705.Superseded values are not recommended for survey control.
 HU0705
 HU0705.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0705.See file dsdata.pdf to determine how the superseded data were derived.
 HU0705
 HU0705_MARKER: DR = REFERENCE MARK DISK
 HU0705_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0705_STAMPING: GORDY NO 1 1942
 HU0705_MARK LOGO: CGS
 HU0705_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0705+STABILITY: SURFACE MOTION
 HU0705
 HU0705  HISTORY     - Date     Condition        Report By
 HU0705  HISTORY     - 1942     MONUMENTED       CGS
 HU0705  HISTORY     - 1962     GOOD             CGS
 HU0705
 HU0705                          STATION DESCRIPTION
 HU0705
 HU0705'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0705'1.6 MI E FROM ST LUKE.
 HU0705'1.6 MILES EAST ALONG A DIRT ROAD FROM THE ROAD JUNCTION AT ST.
 HU0705'LUKE, WORCESTER COUNTY, ABOUT 125 FEET NORTHEAST OF THE NORTHEAST
 HU0705'CORNER OF AN ABANDONED SCHOOLHOUSE, 16.6 FEET NORTH OF THE CENTER
 HU0705'LINE OF THE ROAD, 81.2 FEET NORTHEAST OF TRIANGULATION STATION
 HU0705'GORDY, DESCRIBED ABOVE, 70.2 FEET EAST OF THE CENTER LINE OF A
 HU0705'DIRT ROAD LEADING NORTH THROUGH A WOODS, AND ABOUT LEVEL WITH THE
 HU0705'MAIN ROAD.  A STANDARD REFERENCE-MARK DISK, STAMPED GORDY NO 1
 HU0705'1942 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0704 ***********************************************************************
 HU0704  DESIGNATION -  GORDY RM 2
 HU0704  PID         -  HU0704
 HU0704  STATE/COUNTY-  MD/WORCESTER
 HU0704  COUNTRY     -  US
 HU0704  USGS QUAD   -  SALISBURY (2016)
 HU0704
 HU0704                         *CURRENT SURVEY CONTROL
 HU0704  ______________________________________________________________________
 HU0704* NAD 83(1991) POSITION- 38 15 59.11466(N) 075 31 16.85344(W)   ADJUSTED
 HU0704* NAVD 88 ORTHO HEIGHT -    15.883 (meters)       52.11  (feet) ADJUSTED
 HU0704  ______________________________________________________________________
 HU0704  GEOID HEIGHT    -        -36.032 (meters)                     GEOID18
 HU0704  LAPLACE CORR    -         -1.05  (seconds)                    DEFLEC18
 HU0704  DYNAMIC HEIGHT  -         15.872 (meters)       52.07  (feet) COMP
 HU0704  MODELED GRAVITY -    979,994.8   (mgal)                       NAVD 88
 HU0704
 HU0704  HORZ ORDER      -  THIRD
 HU0704  VERT ORDER      -  SECOND    CLASS 0
 HU0704
 HU0704.The horizontal coordinates were established by classical geodetic methods
 HU0704.and adjusted by the National Geodetic Survey in January 1992.
 HU0704
 HU0704.The orthometric height was determined by differential leveling and
 HU0704.adjusted by the NATIONAL GEODETIC SURVEY
 HU0704.in June 1991.
 HU0704
 HU0704.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0704.GEOID18 height accuracy estimate available here.
 HU0704
 HU0704.Click photographs - Photos may exist for this station.
 HU0704
 HU0704.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0704
 HU0704.The dynamic height is computed by dividing the NAVD 88
 HU0704.geopotential number by the normal gravity value computed on the
 HU0704.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0704.degrees latitude (g = 980.6199 gals.).
 HU0704
 HU0704.The modeled gravity was interpolated from observed gravity values.
 HU0704
 HU0704. The following values were computed from the NAD 83(1991) position.
 HU0704
 HU0704;                    North         East     Units Scale Factor Converg.
 HU0704;SPC MD       -    67,623.469   529,397.487   MT  1.00000601   +0 55 41.0
 HU0704;SPC MD       -   221,861.33  1,736,864.92   sFT  1.00000601   +0 55 41.0
 HU0704;UTM  18      - 4,235,504.134   454,392.967   MT  0.99962562   -0 19 22.4
 HU0704
 HU0704!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0704!SPC MD       -   1.00000316  x   1.00000601  =   1.00000917
 HU0704!UTM  18      -   1.00000316  x   0.99962562  =   0.99962878
 HU0704
 HU0704_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5439235504(NAD 83)
 HU0704
 HU0704                          SUPERSEDED SURVEY CONTROL
 HU0704
 HU0704  NAD 83(1986)-  38 15 59.10647(N)    075 31 16.88029(W) AD(       ) 3
 HU0704  NGVD 29              16.13   (m)           52.9    (f) LEVELING    3  
 HU0704  NGVD 29 (11/26/84)   16.126  (m)           52.91   (f) ADJUSTED    2 0
 HU0704
 HU0704.Superseded values are not recommended for survey control.
 HU0704
 HU0704.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0704.See file dsdata.pdf to determine how the superseded data were derived.
 HU0704
 HU0704_MARKER: DR = REFERENCE MARK DISK
 HU0704_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0704_STAMPING: GORDY NO 2 1942
 HU0704_MARK LOGO: CGS
 HU0704_PROJECTION: PROJECTING 10 CENTIMETERS
 HU0704_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0704+STABILITY: SURFACE MOTION
 HU0704_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0704+SATELLITE: SATELLITE OBSERVATIONS - October 17, 2019
 HU0704
 HU0704  HISTORY     - Date     Condition        Report By
 HU0704  HISTORY     - 1942     MONUMENTED       CGS
 HU0704  HISTORY     - 1962     GOOD             CGS
 HU0704  HISTORY     - 1984     GOOD             NGS
 HU0704  HISTORY     - 20191017 GOOD             BASE9
 HU0704
 HU0704                          STATION DESCRIPTION
 HU0704
 HU0704'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0704'1.6 MI E FROM ST LUKE.
 HU0704'1.6 MILES EAST ALONG A DIRT ROAD FROM THE ROAD JUNCTION AT ST.
 HU0704'LUKE, WORCESTER COUNTY, 69.5 FEET NORTHWEST OF THE NORTHWEST
 HU0704'CORNER OF AN ABANDONED SCHOOLHOUSE, 31.1 FEET WEST OF THE CENTER
 HU0704'LINE OF THE DRIVEWAY LEADING TO THE SCHOOLHOUSE, 18.9 FEET SOUTH
 HU0704'OF THE CENTER LINE OF THE ROAD, AND ABOUT LEVEL WITH THE ROAD.  A
 HU0704'STANDARD REFERENCE-MARK DISK, STAMPED GORDY NO 2 1942 AND SET IN
 HU0704'THE TOP OF A CONCRETE POST.
 HU0704
 HU0704                          STATION RECOVERY (1984)
 HU0704
 HU0704'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HU0704'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 50 AND 13 BUSINESS AT
 HU0704'SAILISBURY, TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 50 AND 13
 HU0704'BUSINESS AT SALISBURY, GO SOUTH ON U.S. HIGHWAY 13 BUSINESS ROUTE FOR
 HU0704'0.2 KM (0.13 MI) TO A CROSSROADS. TURN LEFT AND GO EAST ON MAIN
 HU0704'STREET FOR 0.2 KM (0.13 MI) TO A SIDE ROAD RIGHT. TURN RIGHT AND GO
 HU0704'SOUTHEAST ON STATE HIGHWAY 12 AND 13.65 KM (8.5 MI) TO A CROSSROADS.
 HU0704'TURN RIGHT AND GO WEST ON SAINT LUKES ROAD FOR 0.7 KM (0.45 MI) TO
 HU0704'THE MARK ON THE LEFT, 5.9 METERS (19.2 FT) SOUTH FROM THE CENTER OF
 HU0704'SAINT LUKES ROAD, 14.3 METERS (46.8 FT) SOUTHWEST FROM A POWERLINE
 HU0704'POLE NUMBERED 731 207, 17.3 METERS (56.6 FT) WEST FROM THE POWERLINE
 HU0704'POLE NUMBERED 8-1/2 AND 11.0 METERS (36.0 FT) WEST FROM THE CENTER OF
 HU0704'A DIRT ROAD LEADING SOUTH.
 HU0704
 HU0704                          STATION RECOVERY (2019)
 HU0704
 HU0704'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2019 (DRD)
 HU0704'THE MARK IS IN FRONT YARD OF HOUSE NUMBER 3224 AND IS FLUSH WITH THE
 HU0704'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2650 ***********************************************************************
 HU2650  DESIGNATION -  GORDY RM 3
 HU2650  PID         -  HU2650
 HU2650  STATE/COUNTY-  MD/WORCESTER
 HU2650  COUNTRY     -  US
 HU2650  USGS QUAD   -  SALISBURY (2016)
 HU2650
 HU2650                         *CURRENT SURVEY CONTROL
 HU2650  ______________________________________________________________________
 HU2650* NAD 83(1991) POSITION- 38 15 59.47846(N) 075 31 14.90620(W)   ADJUSTED
 HU2650* NAVD 88 ORTHO HEIGHT -    15.59  (meters)       51.1   (feet) RESET
 HU2650  ______________________________________________________________________
 HU2650  GEOID HEIGHT    -        -36.032 (meters)                     GEOID18
 HU2650  LAPLACE CORR    -         -1.05  (seconds)                    DEFLEC18
 HU2650  HORZ ORDER      -  THIRD
 HU2650  VERT ORDER      -  THIRD
 HU2650
 HU2650.The horizontal coordinates were established by classical geodetic methods
 HU2650.and adjusted by the National Geodetic Survey in January 1992.
 HU2650
 HU2650.The orthometric height was computed from unverified reset data.
 HU2650
 HU2650.No vertical observational check was made to the station.
 HU2650
 HU2650.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2650.GEOID18 height accuracy estimate available here.
 HU2650
 HU2650.Click photographs - Photos may exist for this station.
 HU2650
 HU2650.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2650
 HU2650. The following values were computed from the NAD 83(1991) position.
 HU2650
 HU2650;                    North         East     Units Scale Factor Converg.
 HU2650;SPC MD       -    67,635.452   529,444.636   MT  1.00000599   +0 55 42.2
 HU2650;SPC MD       -   221,900.65  1,737,019.61   sFT  1.00000599   +0 55 42.2
 HU2650;UTM  18      - 4,235,515.080   454,440.348   MT  0.99962556   -0 19 21.2
 HU2650
 HU2650!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2650!SPC MD       -   1.00000321  x   1.00000599  =   1.00000920
 HU2650!UTM  18      -   1.00000321  x   0.99962556  =   0.99962877
 HU2650
 HU2650_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5444035515(NAD 83)
 HU2650
 HU2650                          SUPERSEDED SURVEY CONTROL
 HU2650
 HU2650  NAD 83(1986)-  38 15 59.47030(N)    075 31 14.93315(W) AD(       ) 3
 HU2650  NGVD 29 (11/18/05)   15.83   (m)           51.9    (f) RESET       3  
 HU2650  NGVD 29              15.83   (m)           51.9    (f) LEVELING    3  
 HU2650
 HU2650.Superseded values are not recommended for survey control.
 HU2650
 HU2650.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2650.See file dsdata.pdf to determine how the superseded data were derived.
 HU2650
 HU2650_MARKER: DR = REFERENCE MARK DISK
 HU2650_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2650_STAMPING: GORDY 1942 NO 3 1984
 HU2650_MARK LOGO: NGS
 HU2650_PROJECTION: PROJECTING 10 CENTIMETERS
 HU2650_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2650+STABILITY: SURFACE MOTION
 HU2650_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2650+SATELLITE: SATELLITE OBSERVATIONS - 1984
 HU2650
 HU2650  HISTORY     - Date     Condition        Report By
 HU2650  HISTORY     - 1984     MONUMENTED       NGS
 HU2650  HISTORY     - 1984     GOOD             NGS
 HU2650
 HU2650                          STATION DESCRIPTION
 HU2650
 HU2650'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2650'14.7 KM (9.15 MI) SE FROM SALISBURY.
 HU2650'FROM THE INTERSECTION OF U.S. HIGHWAY 50 AND 13 BUSINESS IN SALISBURY,
 HU2650'GO SOUTH ON U.S. HIGHWAY 13 BUSINESS ROUTE FOR 0.2 KM (0.10 MI) TO A
 HU2650'CROSSROADS. TURN LEFT AND GO EAST ON MAIN STREET FOR 0.2 KM (0.10 MI)
 HU2650'TO A SIDE ROAD RIGHT. TURN RIGHT AND GO SOUTHEAST ON STATE HIGHWAY 12
 HU2650'FOR 13.65 KM (8.50 MI) TO A CROSSROADS. TURN RIGHT AND GO WEST ON
 HU2650'SAINT LUKES ROAD FOR 0.7 KM (0.45 MI) TO THE MARK, ON THE RIGHT, 6.4
 HU2650'M (21.0 FT) NORTH FROM THE CENTER OF SAINT LUKES ROAD, 38.2 M
 HU2650'(125.3 FT) EAST FROM THE POWERLINE POLE NUMBERED 731 207 AND 5.8 M
 HU2650'(19.0 FT) WEST FROM THE CENTER OF A DIRT ROAD LEADING NORTH.
 HU2650'THE MARK IS 0.4 METERS  SSE FROM  A WITNESS POST
 HU2650'THE MARK IS ABOVE LEVEL WITH SAINT LUKES ROAD.
 HU2650
 HU2650                          STATION RECOVERY (1984)
 HU2650
 HU2650'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HU2650'THE MARK IS LOCATED ABOUT 13.75 KM (8.55 MI) SOUTHEST OF SALISBURY,
 HU2650'14.75 KM (9.15 MI) NORTHWEST OF SNOW HILL AND 2.75 KM (1.70 MI) EAST
 HU2650'OF SAINT LUKES.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2650'TO REACH THE MARK FROM THE INTERSECTION OF U.S. HIGHWAY 13 BUSINESS
 HU2650'AND U.S. HIGHWAY 50 AT SALISBURY, GO SOUTH ON U.S. HIGHWAY 13 BUSINESS
 HU2650'FOR 0.2 KM (0.10 MI) TO A CROSSROADS.  TURN LEFT AND GO EAST ON MAIN
 HU2650'STREET FOR 0.2 KM (0.10 MI) TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO
 HU2650'SOUTHEAST ON STATE HIGHWAY 12 FOR 13.65 KM (8.50 MI) TO A SIDE ROAD
 HU2650'RIGHT.  TURN RIGHT AND GO WEST ON SAINT LUKES ROAD FOR 0.7 KM
 HU2650'(0.45 MI) TO THE MARK ON THE RIGHT.
 HU2650'THE MARK IS SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST
 HU2650'PROJECTING 0.10 M (0.3 FT) ABOVE THE GROUND.  IT IS 6.4 M (21.0 FT)
 HU2650'NORTH OF THE CENTER OF SAINT LUKES ROAD, 38.2 M (125.3 FT) EAST OF A
 HU2650'POWERLINE POLE NUMBERED 731 207, 5.8 M (19.0 FT) WEST OF THE CENTER OF
 HU2650'A DIRT ROAD LEADING NORTH AND 0.4 M (1.3 FT) SOUTH-SOUTHEAST OF A
 HU2650'CARSONITE WITNESS POST.  IT IS 1.5 M (4.9 FT) LOWER THAN STATION
 HU2650'GORDY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0678 ***********************************************************************
 HU0678  DESIGNATION -  GORE
 HU0678  PID         -  HU0678
 HU0678  STATE/COUNTY-  MD/DORCHESTER
 HU0678  COUNTRY     -  US
 HU0678  USGS QUAD   -  CHICAMACOMICO RIVER (2016)
 HU0678
 HU0678                         *CURRENT SURVEY CONTROL
 HU0678  ______________________________________________________________________
 HU0678* NAD 83(1991) POSITION- 38 29 58.52584(N) 075 54 09.78777(W)   ADJUSTED
 HU0678* NAVD 88 ORTHO HEIGHT -     4.291 (meters)       14.08  (feet) ADJUSTED
 HU0678  ______________________________________________________________________
 HU0678  GEOID HEIGHT    -        -35.377 (meters)                     GEOID18
 HU0678  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 HU0678  DYNAMIC HEIGHT  -          4.289 (meters)       14.07  (feet) COMP
 HU0678  MODELED GRAVITY -    980,016.2   (mgal)                       NAVD 88
 HU0678
 HU0678  HORZ ORDER      -  FIRST
 HU0678  VERT ORDER      -  SECOND    CLASS 0
 HU0678
 HU0678.The horizontal coordinates were established by classical geodetic methods
 HU0678.and adjusted by the National Geodetic Survey in January 1992.
 HU0678
 HU0678.The orthometric height was determined by differential leveling and
 HU0678.adjusted by the NATIONAL GEODETIC SURVEY
 HU0678.in June 1991.
 HU0678
 HU0678.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0678.GEOID18 height accuracy estimate available here.
 HU0678
 HU0678.Click photographs - Photos may exist for this station.
 HU0678
 HU0678.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0678
 HU0678.The dynamic height is computed by dividing the NAVD 88
 HU0678.geopotential number by the normal gravity value computed on the
 HU0678.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0678.degrees latitude (g = 980.6199 gals.).
 HU0678
 HU0678.The modeled gravity was interpolated from observed gravity values.
 HU0678
 HU0678. The following values were computed from the NAD 83(1991) position.
 HU0678
 HU0678;                    North         East     Units Scale Factor Converg.
 HU0678;SPC MD       -    93,033.117   495,714.360   MT  0.99997128   +0 41 19.3
 HU0678;SPC MD       -   305,226.15  1,626,356.20   sFT  0.99997128   +0 41 19.3
 HU0678;UTM  18      - 4,261,634.028   421,283.652   MT  0.99967630   -0 33 43.1
 HU0678
 HU0678!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0678!SPC MD       -   1.00000488  x   0.99997128  =   0.99997616
 HU0678!UTM  18      -   1.00000488  x   0.99967630  =   0.99968118
 HU0678
 HU0678:                Primary Azimuth Mark                     Grid Az
 HU0678:SPC MD       -  GORE AZ MK                               300 23 25.5
 HU0678:UTM  18      -  GORE AZ MK                               301 38 27.9
 HU0678
 HU0678_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2128361634(NAD 83)
 HU0678
 HU0678|---------------------------------------------------------------------|
 HU0678| PID    Reference Object                     Distance      Geod. Az  |
 HU0678|                                                           dddmmss.s |
 HU0678| HU2065 SHILOH LOOKOUT TOWER                APPROX.10.3 KM 0083349.5 |
 HU0678| HU0680 GORE RM 2                            32.169 METERS 01810     |
 HU0678| HU0679 GORE RM 1                            40.205 METERS 08534     |
 HU0678| HU1919 VIENNA W PWRLINE MST CEN TOP        APPROX. 7.2 KM 1024359.6 |
 HU0678| HU1922 VIENNA E PWRLINE MST CEN TOP        APPROX. 7.6 KM 1034232.0 |
 HU0678| HU1918 VIENNA WATER TANK                   APPROX. 7.0 KM 1041823.7 |
 HU0678| HU2743 GORE AZ MK 2                        APPROX. 0.9 KM 2283752.4 |
 HU0678| HU2741 BM 227                              418.272 METERS 2675129.4 |
 HU0678| HU0681 GORE AZ MK                                         3010444.8 |
 HU0678| HU2066 SECRETARY TANK                      APPROX.12.9 KM 3405353.3 |
 HU0678| HU2063 EAST NEW MARKET WATER TANK          APPROX.11.2 KM 3491759.6 |
 HU0678|---------------------------------------------------------------------|
 HU0678
 HU0678                          SUPERSEDED SURVEY CONTROL
 HU0678
 HU0678  NAD 83(1986)-  38 29 58.52292(N)    075 54 09.80779(W) AD(       ) 1
 HU0678  NAD 27      -  38 29 58.10300(N)    075 54 11.05100(W) AD(       ) 1
 HU0678  NGVD 29               4.53   (m)           14.9    (f) LEVELING    3  
 HU0678  NGVD 29               4.66   (m)           15.3    (f) LEVELING    3  
 HU0678  NGVD 29 (11/26/84)    4.528  (m)           14.86   (f) ADJUSTED    2 0
 HU0678
 HU0678.Superseded values are not recommended for survey control.
 HU0678
 HU0678.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0678.See file dsdata.pdf to determine how the superseded data were derived.
 HU0678
 HU0678_MARKER: DS = TRIANGULATION STATION DISK
 HU0678_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0678_STAMPING: GORE 1942
 HU0678_MARK LOGO: CGS
 HU0678_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0678_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0678+STABILITY: SURFACE MOTION
 HU0678_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0678+SATELLITE: SATELLITE OBSERVATIONS - March 23, 1988
 HU0678
 HU0678  HISTORY     - Date     Condition        Report By
 HU0678  HISTORY     - 1942     MONUMENTED       CGS
 HU0678  HISTORY     - 1942     GOOD             CGS
 HU0678  HISTORY     - 19880323 GOOD             NGS
 HU0678
 HU0678                          STATION DESCRIPTION
 HU0678
 HU0678'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU0678'STATION IS 1.0 MILE S OF SALEM ON PROPERTY OWNED BY JOHN GORE.  IT
 HU0678'IS 90 FEET E OF A POWER LINE, 67 FEET S OF THE SE CORNER OF HOUSE,
 HU0678'60 FEET SSW OF A FARM BUILDING, 25 FEET S OF CENTER OF DRIVEWAY,
 HU0678'AND 6 FEET E OF RANGE OF BACK OF HOUSE.  MARK IS STAMPED GORE
 HU0678'1942 AND IS SET 12 INCHES BELOW THE SURFACE.
 HU0678'
 HU0678'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 HU0678'DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HU0678'
 HU0678'REFERENCE MARK NO.1 IS E OF THE STATION AT THE SW CORNER OF
 HU0678'GRAIN BARN.  IT IS 3 FEET NW OF THE NW CORNER OF BUILDING USED FOR
 HU0678'A MACHINE SHOP.  MARK IS STAMPED GORE NO.1 1942 AND PROJECTS 8
 HU0678'INCHES.
 HU0678'
 HU0678'REFERENCE MARK NO.2 IS NE OF THE STATION.  IT IS 25 FEET NE OF
 HU0678'THE NE CORNER OF HOUSE, 12 FEET ENE OF A 30-INCH MAPLE TREE, AND 1
 HU0678'FOOT W OF A N-S FENCE LINE.  MARK IS STAMPED GORE NO.2 1942 AND
 HU0678'PROJECTS 6 INCHES.
 HU0678'
 HU0678'AZIMUTH MARK IS 0.5 MILE NW OF STATION IN AN OLD FENCE LINE.  IT
 HU0678'IS 18 FEET SW OF THE CENTER OF ROAD AND 12 FEET N OF THE NE
 HU0678'CORNER OF A CULTIVATED FIELD.  TO REACH FROM THE STATION GO BACK
 HU0678'TO DIRT ROAD TURN RIGHT AND GO 0.3 MILE TO AZIMUTH MARK ON LEFT.
 HU0678'
 HU0678'TO REACH THE STATION FROM SALEM POST OFFICE GO S ON DIRT ROAD
 HU0678'FOR 1.0 MILE TO FARM ROAD LEFT, TURN LEFT AND GO 0.25 MILE TO
 HU0678'MR. GORES HOUSE AND STATION.
 HU0678'
 HU0678'A 103-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT BRINSFIELD, A
 HU0678'113-FOOT LIGHT AT VIENNA, A 100-FOOT LIGHT AT HORSMAN, A 113-FOOT
 HU0678'LIGHT AT STATION NORTH, A 113-FOOT LIGHT AT STATION FLEMING, AND
 HU0678'A 113-FOOT LIGHT AT STATION MALVERN.
 HU0678
 HU0678                          STATION RECOVERY (1942)
 HU0678
 HU0678'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HU0678'1.5 MI SE FROM SALEM.
 HU0678'THIS MARK IS ABOUT 1.5 MILES SOUTHEAST ALONG A GRAVEL ROAD FROM
 HU0678'THE JUNCTION WITH HIGHWAY U.S. 50 AT SALEM, DORCHESTER COUNTY, AND
 HU0678'0.25 MILE NORTHEAST ALONG A DIRT ROAD TO A LARGE 2-STORY WHITE
 HU0678'HOUSE ON TOP OF A SMALL KNOLL, 66.6 FEET SOUTH OF THE SOUTH CORNER
 HU0678'OF THE FARM HOUSE, 59.4 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF
 HU0678'THE BARN NEAREST THE HOUSE, 30 FEET SOUTHWEST OF THE CENTER LINE
 HU0678'OF THE DRIVEWAY, AND IS A STANDARD TRIANGULATION STATION DISK ABOUT
 HU0678'2 FEET LOWER THAN THE SURFACE OF THE GROUND AND SET IN THE TOP
 HU0678'OF A CONCRETE POST.
 HU0678
 HU0678                          STATION RECOVERY (1988)
 HU0678
 HU0678'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HU0678'THE STATION, REFERENCE MARK ONE AND REFERENCE MARK TWO WERE RECOVERED
 HU0678'AND FOUND IN GOOD CONDITION.  THE AZIMUTH MARK WAS SEARCHED FOR BUT
 HU0678'NOT FOUND AND BELIEVED DESTROYED.  A NEW AZIMUTH MARK TWO WAS
 HU0678'ESTABLISHED AND COUNTY BENCH MARK 227 WAS POSITIONED AT THIS DATE.  A
 HU0678'SHORTER DISTANCE OF 0.010 METER OR 0.03 FT WAS NOTED TO REFERENCE MARK
 HU0678'ONE.  A SHORTER DISTANCE OF 0.008 METER OR 0.02 FT WAS NOTED TO
 HU0678'REFERENCE MARK TWO.  A DIFFERENCE IN DIRECTION OF 1 MINUTE 46 SECONDS
 HU0678'WAS NOTED TO REFERENCE MARK ONE.  ALL OTHER DISTANCES AND DIRECTIONS
 HU0678'WERE WITHIN CLOSE AGREEMENT WITH THE MOST RECENT INFORMATION
 HU0678'AVAILABLE.
 HU0678'THE MARK IS LOCATED ABOUT 1.9 KM (1.20 MI) SOUTH OF THE SMALL COMUNITY
 HU0678'OF SALEM.  OWNERSHIP--EDGAR S. GORE, RD 1 BOX 85, VIENNA, MD. 21869.
 HU0678'PHONE (301) 228-2862.
 HU0678'TO REACH THE MARK FROM THE POST OFFICE IN LINKWOOD, GO SOUTHEAST ON
 HU0678'U.S. HIGHWAY 50 FOR 3.55 KM (2.20 MI) TO A SIDE ROAD RIGHT.  TURN
 HU0678'RIGHT AND GO SOUTHEAST ON SALEM ROAD FOR 0.85 KM (0.55 MI) TO A SIDE
 HU0678'ROAD RIGHT.  TURN RIGHT AND GO SOUTH ON RAVENWOOD ROAD FOR 1.90 KM
 HU0678'(1.20 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO EAST ON A DIRT
 HU0678'DRIVEWAY FOR 0.42 KM (0.25 MI) TO THE MARK ON THE RIGHT.
 HU0678'THE MARK IS SET IN THE TOP OF A 0.3 M (1.0 FT) SQUARE CONCRETE POST
 HU0678'RECESSED 0.35 M (1.1 FT) BELOW THE SURFACE AND COVERED BY A STANDARD
 HU0678'ALUMINUM ACCESS COVER.  THEY ARE 17.9 M (58.7 FT) SOUTHWEST OF THE
 HU0678'EAST CORNER OF A TWO STORY FARM HOUSE, 18.2 M (59.7 FT) SOUTHWEST OF
 HU0678'THE SOUTHWEST CORNER OF A CONCRETE BLOCK GARAGE, 3.5 M (11.5 FT)
 HU0678'NORTHEAST OF THE EDGE OF A CULTIVATED FIELD, 58.7 M (192.6 FT)
 HU0678'SOUTHEAST OF A POWERLINE POLE NUMBERED 501 128 31, 30.5 M (100.1 FT)
 HU0678'WEST-NORTHWEST OF A 0.66 M (2.2 FT) WALNUT TREE AND 0.9 M (3.0 FT)
 HU0678'SOUTH OF THE EAST END OF A ROW OF PEACH TREES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0681 ***********************************************************************
 HU0681  DESIGNATION -  GORE AZ MK
 HU0681  PID         -  HU0681
 HU0681  STATE/COUNTY-  MD/DORCHESTER
 HU0681  COUNTRY     -  US
 HU0681  USGS QUAD   -  EAST NEW MARKET (2016)
 HU0681
 HU0681                         *CURRENT SURVEY CONTROL
 HU0681  ______________________________________________________________________
 HU0681* NAD 83(1986) POSITION- 38 30 12.     (N) 075 54 38.     (W)   SCALED
 HU0681* NAVD 88 ORTHO HEIGHT -     2.607 (meters)        8.55  (feet) ADJUSTED
 HU0681  ______________________________________________________________________
 HU0681  GEOID HEIGHT    -        -35.363 (meters)                     GEOID18
 HU0681  DYNAMIC HEIGHT  -          2.605 (meters)        8.55  (feet) COMP
 HU0681  MODELED GRAVITY -    980,013.7   (mgal)                       NAVD 88
 HU0681
 HU0681  VERT ORDER      -  SECOND    CLASS 0
 HU0681
 HU0681.The horizontal coordinates were scaled from a map and have
 HU0681.an estimated accuracy of +/- 6 seconds.
 HU0681
 HU0681.The orthometric height was determined by differential leveling and
 HU0681.adjusted by the NATIONAL GEODETIC SURVEY
 HU0681.in June 1991.
 HU0681
 HU0681.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0681.GEOID18 height accuracy estimate available here.
 HU0681
 HU0681.Click photographs - Photos may exist for this station.
 HU0681
 HU0681.The dynamic height is computed by dividing the NAVD 88
 HU0681.geopotential number by the normal gravity value computed on the
 HU0681.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0681.degrees latitude (g = 980.6199 gals.).
 HU0681
 HU0681.The modeled gravity was interpolated from observed gravity values.
 HU0681
 HU0681;                    North         East    Units  Estimated Accuracy
 HU0681;SPC MD       -    93,440.      495,030.      MT  (+/- 180 meters Scaled)
 HU0681
 HU0681_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH206620(NAD 83)
 HU0681
 HU0681                          SUPERSEDED SURVEY CONTROL
 HU0681
 HU0681  NGVD 29 (11/26/84)    2.845  (m)            9.33   (f) ADJUSTED    2 0
 HU0681
 HU0681.Superseded values are not recommended for survey control.
 HU0681
 HU0681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0681.See file dsdata.pdf to determine how the superseded data were derived.
 HU0681
 HU0681_MARKER: DZ = AZIMUTH MARK DISK
 HU0681_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0681_STAMPING: GORE 1942
 HU0681_MARK LOGO: CGS
 HU0681_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0681+STABILITY: SURFACE MOTION
 HU0681
 HU0681  HISTORY     - Date     Condition        Report By
 HU0681  HISTORY     - 1942     MONUMENTED       CGS
 HU0681  HISTORY     - 19880323 MARK NOT FOUND   NGS
 HU0681
 HU0681                          STATION DESCRIPTION
 HU0681
 HU0681'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0681'1 MI SE FROM SALEM.
 HU0681'THIS MARK IS ABOUT 1 MILE SOUTHEAST ALONG A GRAVEL ROAD FROM THE
 HU0681'JUNCTION OF HIGHWAY U.S. 50 AT SALEM, DORCHESTER COUNTY, 0.5 MILE
 HU0681'WEST OF THE STATION, 65 FEET EAST OF A SMALL CULVERT, ALONG THE
 HU0681'GRAVEL ROAD, 20 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD AND
 HU0681'IS A STANDARD AZIMUTH DISK SET IN THE TOP OF A CONCRETE POST, SET
 HU0681'ABOUT 3 FEET FROM A STANDARD REFERENCE POST.
 HU0681
 HU0681                          STATION RECOVERY (1988)
 HU0681
 HU0681'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HU0681'THE MARK WAS SEARCHED FOR BUT NOT FOUND.  THE PROPERTY OWNER ADVISED
 HU0681'THAT THE MARK HAD BEEN DESTROYED BY FARM MACHINERY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2743 ***********************************************************************
 HU2743  DESIGNATION -  GORE AZ MK 2
 HU2743  PID         -  HU2743
 HU2743  STATE/COUNTY-  MD/DORCHESTER
 HU2743  COUNTRY     -  US
 HU2743  USGS QUAD   -  CHICAMACOMICO RIVER (2016)
 HU2743
 HU2743                         *CURRENT SURVEY CONTROL
 HU2743  ______________________________________________________________________
 HU2743* NAD 83(1991) POSITION- 38 29 38.51374(N) 075 54 38.70110(W)   ADJUSTED
 HU2743* NAVD 88 ORTHO HEIGHT -     2.4   (meters)        8.    (feet) VERTCON3
 HU2743  ______________________________________________________________________
 HU2743  GEOID HEIGHT    -        -35.373 (meters)                     GEOID18
 HU2743  LAPLACE CORR    -         -2.40  (seconds)                    DEFLEC18
 HU2743  HORZ ORDER      -  SECOND
 HU2743
 HU2743.The horizontal coordinates were established by classical geodetic methods
 HU2743.and adjusted by the National Geodetic Survey in January 1992.
 HU2743
 HU2743.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2743.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2743
 HU2743.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2743.GEOID18 height accuracy estimate available here.
 HU2743
 HU2743.Click photographs - Photos may exist for this station.
 HU2743
 HU2743.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2743
 HU2743. The following values were computed from the NAD 83(1991) position.
 HU2743
 HU2743;                    North         East     Units Scale Factor Converg.
 HU2743;SPC MD       -    92,407.716   495,021.181   MT  0.99997191   +0 41 01.1
 HU2743;SPC MD       -   303,174.31  1,624,081.99   sFT  0.99997191   +0 41 01.1
 HU2743;UTM  18      - 4,261,024.084   420,577.196   MT  0.99967768   -0 34 00.9
 HU2743
 HU2743!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2743!SPC MD       -   1.00000517  x   0.99997191  =   0.99997708
 HU2743!UTM  18      -   1.00000517  x   0.99967768  =   0.99968285
 HU2743
 HU2743_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2057761024(NAD 83)
 HU2743
 HU2743                          SUPERSEDED SURVEY CONTROL
 HU2743
 HU2743  NAD 83(1986)-  38 29 38.51089(N)    075 54 38.72117(W) AD(       ) 2
 HU2743  NGVD 29 (11/20/91)    2.7    (m)            9.     (f) VERT ANG       
 HU2743
 HU2743.Superseded values are not recommended for survey control.
 HU2743
 HU2743.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2743.See file dsdata.pdf to determine how the superseded data were derived.
 HU2743
 HU2743_MARKER: DZ = AZIMUTH MARK DISK
 HU2743_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2743_STAMPING: GORE 1942 NO 2 1988
 HU2743_MARK LOGO: NGS
 HU2743_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2743_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2743+STABILITY: SURFACE MOTION
 HU2743_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2743+SATELLITE: SATELLITE OBSERVATIONS - 1988
 HU2743
 HU2743  HISTORY     - Date     Condition        Report By
 HU2743  HISTORY     - 1988     MONUMENTED       NGS
 HU2743
 HU2743                          STATION DESCRIPTION
 HU2743
 HU2743'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 HU2743'THE MARK IS LOCATED ABOUT 2.7 KM (1.70 MI) SOUTH OF THE SMALL COMUNITY
 HU2743'OF SALEM.  OWNERSHIP--MARK EBERSPACHER (301) 228-7096.
 HU2743'TO REACH THE MARK FROM THE POST OFFICE IN LINKWOOD, GO SOUTHEAST ON
 HU2743'U.S. HIGHWAY 50 FOR 3.55 KM (2.20 MI) TO A SIDE ROAD RIGHT.  TURN
 HU2743'RIGHT AND GO SOUTHEAST ON SALEM ROAD FOR 0.85 KM (0.55 MI) TO A SIDE
 HU2743'ROAD RIGHT.  TURN RIGHT AND GO SOUTH ON RAVENWOOD ROAD FOR 2.65 KM
 HU2743'(1.65 MI) TO THE MARK ON THE RIGHT IN THE SOUTHEAST CORNER OF A WOODS.
 HU2743'THE MARK IS SET IN THE TOP OF A 0.3 M (1.0 FT) ROUND CONCRETE POST
 HU2743'FLUSH WITH THE GROUND.  THE UNDERGROUND MARK IS RECESSED 1.0 M
 HU2743'(3.3 FT) BELOW GROUND.  THEY ARE 89.4 M (293.3 FT) NORTH-NORTHEAST OF
 HU2743'A C AND P TELEPHONE PEDESTAL NUMBERED 29, 15.5 M (50.9 FT) NORTHWEST
 HU2743'OF THE CENTERLINE OF RAVENWOOD ROAD, 9.3 M (30.5 FT) NORTHWEST OF THE
 HU2743'CENTERLINE OF A DITCH, 4.9 M (16.1 FT) SOUTH-SOUTHWEST OF THE
 HU2743'CENTERLINE OF AN EAST-WEST DITCH AND 1.2 M (3.9 FT) SOUTHWEST OF A
 HU2743'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0679 ***********************************************************************
 HU0679  DESIGNATION -  GORE RM 1
 HU0679  PID         -  HU0679
 HU0679  STATE/COUNTY-  MD/DORCHESTER
 HU0679  COUNTRY     -  US
 HU0679  USGS QUAD   -  CHICAMACOMICO RIVER (2016)
 HU0679
 HU0679                         *CURRENT SURVEY CONTROL
 HU0679  ______________________________________________________________________
 HU0679* NAD 83(1991) POSITION- 38 29 58.62674(N) 075 54 08.13355(W)   NO CHECK
 HU0679* NAVD 88 ORTHO HEIGHT -     4.484 (meters)       14.71  (feet) ADJUSTED
 HU0679  ______________________________________________________________________
 HU0679  GEOID HEIGHT    -        -35.377 (meters)                     GEOID18
 HU0679  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 HU0679  DYNAMIC HEIGHT  -          4.481 (meters)       14.70  (feet) COMP
 HU0679  MODELED GRAVITY -    980,016.2   (mgal)                       NAVD 88
 HU0679
 HU0679  HORZ ORDER      -  THIRD
 HU0679  VERT ORDER      -  SECOND    CLASS 0
 HU0679
 HU0679.The horizontal coordinates were established by classical geodetic methods
 HU0679.and adjusted by the National Geodetic Survey in January 1992.
 HU0679
 HU0679.No horizontal observational check was made to the station.
 HU0679
 HU0679.The orthometric height was determined by differential leveling and
 HU0679.adjusted by the NATIONAL GEODETIC SURVEY
 HU0679.in June 1991.
 HU0679
 HU0679.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0679.GEOID18 height accuracy estimate available here.
 HU0679
 HU0679.Click photographs - Photos may exist for this station.
 HU0679
 HU0679.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0679
 HU0679.The dynamic height is computed by dividing the NAVD 88
 HU0679.geopotential number by the normal gravity value computed on the
 HU0679.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0679.degrees latitude (g = 980.6199 gals.).
 HU0679
 HU0679.The modeled gravity was interpolated from observed gravity values.
 HU0679
 HU0679. The following values were computed from the NAD 83(1991) position.
 HU0679
 HU0679;                    North         East     Units Scale Factor Converg.
 HU0679;SPC MD       -    93,036.710   495,754.403   MT  0.99997127   +0 41 20.3
 HU0679;SPC MD       -   305,237.94  1,626,487.57   sFT  0.99997127   +0 41 20.3
 HU0679;UTM  18      - 4,261,636.745   421,323.752   MT  0.99967623   -0 33 42.1
 HU0679
 HU0679!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0679!SPC MD       -   1.00000485  x   0.99997127  =   0.99997612
 HU0679!UTM  18      -   1.00000485  x   0.99967623  =   0.99968108
 HU0679
 HU0679_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2132361636(NAD 83)
 HU0679
 HU0679                          SUPERSEDED SURVEY CONTROL
 HU0679
 HU0679  NAD 83(1986)-  38 29 58.62380(N)    075 54 08.15367(W) AD(       ) 3
 HU0679  NGVD 29               4.72   (m)           15.5    (f) LEVELING    3  
 HU0679  NGVD 29 (11/26/84)    4.721  (m)           15.49   (f) ADJUSTED    2 0
 HU0679
 HU0679.Superseded values are not recommended for survey control.
 HU0679
 HU0679.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0679.See file dsdata.pdf to determine how the superseded data were derived.
 HU0679
 HU0679_MARKER: DR = REFERENCE MARK DISK
 HU0679_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0679_STAMPING: GORE NO 1 1942
 HU0679_MARK LOGO: CGS
 HU0679_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0679_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0679+STABILITY: SURFACE MOTION
 HU0679_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0679+SATELLITE: SATELLITE OBSERVATIONS - March 23, 1988
 HU0679
 HU0679  HISTORY     - Date     Condition        Report By
 HU0679  HISTORY     - 1942     MONUMENTED       CGS
 HU0679  HISTORY     - 19880323 GOOD             NGS
 HU0679
 HU0679                          STATION DESCRIPTION
 HU0679
 HU0679'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0679'1.5 MI SE FROM SALEM.
 HU0679'THIS MARK IS ABOUT 1.5 MILES SOUTHEAST OF THE JUNCTION WITH
 HU0679'HIGHWAY U.S. 50 ALONG A GRAVEL ROAD FROM SALEM, DORCHESTER COUNTY,
 HU0679'0.25 MILE NORTHEAST ALONG A DIRT ROAD TO THE FARM HOUSE, 100 FEET
 HU0679'SOUTHEAST OF THE STATION, AT THE SOUTHWEST CORNER OF A WHITE BARN,
 HU0679'ABOUT 1 FOOT FROM THE SOUTHWEST BRICK FOUNDATION PILLAR, AND IS A
 HU0679'STANDARD REFERENCE DISK SET IN THE TOP OF A CONCRETE POST.
 HU0679
 HU0679                          STATION RECOVERY (1988)
 HU0679
 HU0679'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HU0679'THE MARK IS LOCATED ABOUT 1.9 KM (1.20 MI) SOUTH OF THE SMALL COMUNITY
 HU0679'OF SALEM.  OWNERSHIP--EDGAR S. GORE, RD 1 BOX 85, VIENNA, MD. 21869.
 HU0679'PHONE (301) 228-2862.
 HU0679'TO REACH THE MARK FROM THE POST OFFICE IN LINKWOOD, GO SOUTHEAST ON
 HU0679'U.S. HIGHWAY 50 FOR 3.55 KM (2.20 MI) TO A SIDE ROAD RIGHT.  TURN
 HU0679'RIGHT AND GO SOUTHEAST ON SALEM ROAD FOR 0.85 KM (0.55 MI) TO A SIDE
 HU0679'ROAD RIGHT.  TURN RIGHT AND GO SOUTH ON RAVENWOOD ROAD FOR 1.90 KM
 HU0679'(1.20 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO EAST ON A DIRT
 HU0679'DRIVEWAY FOR 0.42 KM (0.25 MI) TO THE MARK ON THE RIGHT.
 HU0679'THE MARK IS SET IN THE TOP OF A 0.3 M (1.0 FT) SQUARE CONCRETE POST
 HU0679'PROJECTING 0.15 M (0.5 FT) ABOVE THE SURFACE.  IT IS 39.8 M
 HU0679'(130.6 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF A TWO STORY FARM
 HU0679'HOUSE, 12.3 M (40.4 FT) NORTHEAST OF A 0.7 M (2.3 FT) WALNUT TREE, 9.1
 HU0679'M (29.9 FT) NORTH OF THE NORTH EDGE OF A CULTIVATED FIELD AND 0.3 M
 HU0679'(1.0 FT) NORTHWEST OF THE SOUTHWEST CORNER OF A FARM BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0680 ***********************************************************************
 HU0680  DESIGNATION -  GORE RM 2
 HU0680  PID         -  HU0680
 HU0680  STATE/COUNTY-  MD/DORCHESTER
 HU0680  COUNTRY     -  US
 HU0680  USGS QUAD   -  EAST NEW MARKET (2016)
 HU0680
 HU0680                         *CURRENT SURVEY CONTROL
 HU0680  ______________________________________________________________________
 HU0680* NAD 83(1991) POSITION- 38 29 59.51715(N) 075 54 09.37401(W)   NO CHECK
 HU0680* NAVD 88 ORTHO HEIGHT -     5.050 (meters)       16.57  (feet) ADJUSTED
 HU0680  ______________________________________________________________________
 HU0680  GEOID HEIGHT    -        -35.377 (meters)                     GEOID18
 HU0680  LAPLACE CORR    -         -2.38  (seconds)                    DEFLEC18
 HU0680  DYNAMIC HEIGHT  -          5.047 (meters)       16.56  (feet) COMP
 HU0680  MODELED GRAVITY -    980,016.2   (mgal)                       NAVD 88
 HU0680
 HU0680  HORZ ORDER      -  THIRD
 HU0680  VERT ORDER      -  SECOND    CLASS 0
 HU0680
 HU0680.The horizontal coordinates were established by classical geodetic methods
 HU0680.and adjusted by the National Geodetic Survey in January 1992.
 HU0680
 HU0680.No horizontal observational check was made to the station.
 HU0680
 HU0680.The orthometric height was determined by differential leveling and
 HU0680.adjusted by the NATIONAL GEODETIC SURVEY
 HU0680.in June 1991.
 HU0680
 HU0680.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0680.GEOID18 height accuracy estimate available here.
 HU0680
 HU0680.Click photographs - Photos may exist for this station.
 HU0680
 HU0680.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0680
 HU0680.The dynamic height is computed by dividing the NAVD 88
 HU0680.geopotential number by the normal gravity value computed on the
 HU0680.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0680.degrees latitude (g = 980.6199 gals.).
 HU0680
 HU0680.The modeled gravity was interpolated from observed gravity values.
 HU0680
 HU0680. The following values were computed from the NAD 83(1991) position.
 HU0680
 HU0680;                    North         East     Units Scale Factor Converg.
 HU0680;SPC MD       -    93,063.802   495,724.017   MT  0.99997125   +0 41 19.5
 HU0680;SPC MD       -   305,326.82  1,626,387.88   sFT  0.99997125   +0 41 19.5
 HU0680;UTM  18      - 4,261,664.485   421,293.974   MT  0.99967628   -0 33 42.9
 HU0680
 HU0680!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0680!SPC MD       -   1.00000476  x   0.99997125  =   0.99997601
 HU0680!UTM  18      -   1.00000476  x   0.99967628  =   0.99968104
 HU0680
 HU0680_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2129361664(NAD 83)
 HU0680
 HU0680                          SUPERSEDED SURVEY CONTROL
 HU0680
 HU0680  NAD 83(1986)-  38 29 59.51416(N)    075 54 09.39405(W) AD(       ) 3
 HU0680  NGVD 29               5.29   (m)           17.4    (f) LEVELING    3  
 HU0680  NGVD 29 (11/26/84)    5.287  (m)           17.35   (f) ADJUSTED    2 0
 HU0680
 HU0680.Superseded values are not recommended for survey control.
 HU0680
 HU0680.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0680.See file dsdata.pdf to determine how the superseded data were derived.
 HU0680
 HU0680_MARKER: DR = REFERENCE MARK DISK
 HU0680_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0680_STAMPING: GORE NO 2 1942
 HU0680_MARK LOGO: CGS
 HU0680_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0680_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0680+STABILITY: SURFACE MOTION
 HU0680_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0680+SATELLITE: SATELLITE OBSERVATIONS - March 23, 1988
 HU0680
 HU0680  HISTORY     - Date     Condition        Report By
 HU0680  HISTORY     - 1942     MONUMENTED       CGS
 HU0680  HISTORY     - 19880323 GOOD             NGS
 HU0680
 HU0680                          STATION DESCRIPTION
 HU0680
 HU0680'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0680'1.5 MI SE FROM SALEM.
 HU0680'THIS MARK IS ABOUT 1.5 MILES SOUTHEAST OF THE JUNCTION WITH
 HU0680'HIGHWAY U.S. 50 ALONG A GRAVEL ROAD FROM SALEM, DORCHESTER COUNTY,
 HU0680'0.25 MILE NORTHEAST ALONG A DIRT ROAD TO THE FARM HOUSE, ABOUT
 HU0680'100 FEET NORTH OF THE STATION, 20 FEET NORTHEAST OF THE NORTHEAST
 HU0680'CORNER OF THE HOUSE, 1 FOOT WEST OF A WIRE FENCE ROW, AND IS A
 HU0680'STANDARD REFERENCE DISK SET IN THE TOP OF A CONCRETE POST.
 HU0680
 HU0680                          STATION RECOVERY (1988)
 HU0680
 HU0680'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HU0680'THE MARK IS LOCATED ABOUT 1.9 KM (1.20 MI) SOUTH OF THE SMALL COMUNITY
 HU0680'OF SALEM.  OWNERSHIP--EDGAR S. GORE, RD 1 BOX 85, VIENNA, MD. 21869.
 HU0680'PHONE (301) 228-2862.
 HU0680'TO REACH THE MARK FROM THE POST OFFICE IN LINKWOOD, GO SOUTHEAST ON
 HU0680'U.S. HIGHWAY 50 FOR 3.55 KM (2.20 MI) TO A SIDE ROAD RIGHT.  TURN
 HU0680'RIGHT AND GO SOUTHEAST ON SALEM ROAD FOR 0.85 KM (0.55 MI) TO A SIDE
 HU0680'ROAD RIGHT.  TURN RIGHT AND GO SOUTH ON RAVENWOOD ROAD FOR 1.90 KM
 HU0680'(1.20 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO EAST ON A DIRT
 HU0680'DRIVEWAY FOR 0.42 KM (0.25 MI) TO THE MARK ON THE LEFT.
 HU0680'THE MARK IS SET IN THE TOP OF A 0.3 M (1.0 FT) SQUARE CONCRETE POST
 HU0680'PROJECTING 0.13 M (0.4 FT) ABOVE THE SURFACE.  IT IS 15.7 M (51.5 FT)
 HU0680'SOUTHWEST OF THE SOUTHWEST EDGE OF A CULTIVATED FIELD, 8.1 M
 HU0680'(26.6 FT) SOUTH-SOUTHEAST OF A 0.25 M (0.8 FT) CHERRY TREE, 7.7 M
 HU0680'(25.3 FT) NORTHEAST OF THE NORTHEAST CORNER OF A TWO STORY HOUSE AND
 HU0680'7.0 M (23.0 FT) NORTH OF THE NORTH CORNER OF A BLOCK BUILDING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6501 ***********************************************************************
 JV6501  DESIGNATION -  GORF
 JV6501  PID         -  JV6501
 JV6501  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6501  COUNTRY     -  US
 JV6501  USGS QUAD   -  LAUREL (2016)
 JV6501
 JV6501                         *CURRENT SURVEY CONTROL
 JV6501  ______________________________________________________________________
 JV6501* NAD 83(1986) POSITION- 39 01 12.8    (N) 076 49 39.7    (W)   HD_HELD2
 JV6501* NAVD 88 ORTHO HEIGHT -    52.008 (meters)      170.63  (feet) ADJUSTED
 JV6501  ______________________________________________________________________
 JV6501  GEOID HEIGHT    -        -32.379 (meters)                     GEOID18
 JV6501  DYNAMIC HEIGHT  -         51.980 (meters)      170.54  (feet) COMP
 JV6501  MODELED GRAVITY -    980,090.5   (mgal)                       NAVD 88
 JV6501
 JV6501  VERT ORDER      -  SECOND    CLASS II
 JV6501
 JV6501.The horizontal coordinates were established by autonomous hand held GPS
 JV6501.observations and have an estimated accuracy of +/- 10 meters.
 JV6501
 JV6501.The orthometric height was determined by differential leveling and
 JV6501.adjusted by the NATIONAL GEODETIC SURVEY
 JV6501.in June 1991.
 JV6501
 JV6501.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6501.GEOID18 height accuracy estimate available here.
 JV6501
 JV6501.Click photographs - Photos may exist for this station.
 JV6501
 JV6501.The dynamic height is computed by dividing the NAVD 88
 JV6501.geopotential number by the normal gravity value computed on the
 JV6501.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6501.degrees latitude (g = 980.6199 gals.).
 JV6501
 JV6501.The modeled gravity was interpolated from observed gravity values.
 JV6501
 JV6501;                    North         East    Units  Estimated Accuracy
 JV6501;SPC MD       -   150,265.      414,921.      MT  (+/- 10 meters HH2 GPS)
 JV6501
 JV6501_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4177620609(NAD 83)
 JV6501
 JV6501                          SUPERSEDED SURVEY CONTROL
 JV6501
 JV6501.No superseded survey control is available for this station.
 JV6501
 JV6501_MARKER: F = FLANGE-ENCASED ROD
 JV6501_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6501_STAMPING: GORF 1989
 JV6501_MARK LOGO: NGS
 JV6501_PROJECTION: FLUSH
 JV6501_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6501_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6501+STABILITY: POSITION/ELEVATION WELL
 JV6501_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6501+SATELLITE: SATELLITE OBSERVATIONS - January 09, 1991
 JV6501_ROD/PIPE-DEPTH: 8.2 meters
 JV6501
 JV6501  HISTORY     - Date     Condition        Report By
 JV6501  HISTORY     - 1989     MONUMENTED       NGS
 JV6501  HISTORY     - 19910109 GOOD             NGS
 JV6501  HISTORY     - 19980818 GOOD             NGS
 JV6501  HISTORY     - 20170612 GOOD             NGS
 JV6501
 JV6501                          STATION DESCRIPTION
 JV6501
 JV6501'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6501'5.9 M (19.4 FT) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION OF
 JV6501'U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 1.9 KM (1.2 MI) SOUTHEASTERLY
 JV6501'ALONG SPRINGFIELD ROAD, THENCE 0.1 KM (0.1 MI) NORTHERLY ALONG THE
 JV6501'GODDARD OPTICAL RESEARCH FACILITY ENTRANCE ROAD, 12.0 M (39.4 FT)
 JV6501'SOUTHWEST OF THE SOUTHEAST CORNER OF BUILDING NUMBER 201, 10.4 M
 JV6501'(34.1 FT) WEST OF THE ROAD CENTERLINE, 8.2 M (26.9 FT) NORTHEAST OF A
 JV6501'WITNESS POST, AND 0.1 M (0.3 FT) ABOVE THE LEVEL OF THE ROAD.
 JV6501'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE
 JV6501'SLEEVE DEPTH IS UNKNOWN.
 JV6501
 JV6501                          STATION RECOVERY (1998)
 JV6501
 JV6501'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 JV6501'RECOVERED AS DESCRIBED.
 JV6501
 JV6501                          STATION RECOVERY (2017)
 JV6501
 JV6501'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV6501'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9961 ***********************************************************************
 HV9961  DESIGNATION -  GORF GPS 8
 HV9961  PID         -  HV9961
 HV9961  STATE/COUNTY-  MD/PRINCE GEORGES
 HV9961  COUNTRY     -  US
 HV9961  USGS QUAD   -  BOWIE (2016)
 HV9961
 HV9961                         *CURRENT SURVEY CONTROL
 HV9961  ______________________________________________________________________
 HV9961* NAD 83(2011) POSITION- 38 59 41.20726(N) 076 43 14.44720(W)   ADJUSTED
 HV9961* NAD 83(2011) ELLIP HT-   -19.987 (meters)        (06/27/12)   ADJUSTED
 HV9961* NAD 83(2011) EPOCH   -  2010.00
 HV9961* NAVD 88 ORTHO HEIGHT -    12.7   (meters)       42.    (feet) GPS OBS
 HV9961  ______________________________________________________________________
 HV9961  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV9961  GEOID HEIGHT    -        -33.070 (meters)                     GEOID93
 HV9961  GEOID HEIGHT    -        -32.716 (meters)                     GEOID18
 HV9961  NAD 83(2011) X  -  1,140,148.908 (meters)                     COMP
 HV9961  NAD 83(2011) Y  - -4,830,956.920 (meters)                     COMP
 HV9961  NAD 83(2011) Z  -  3,991,854.055 (meters)                     COMP
 HV9961  LAPLACE CORR    -         -5.61  (seconds)                    DEFLEC18
 HV9961
 HV9961  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9961  Standards:
 HV9961         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9961            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9961  -------------------------------------------------------------------
 HV9961  NETWORK    1.37   2.90           0.56   0.56   1.48      0.06012938
 HV9961  -------------------------------------------------------------------
 HV9961  Click here for local accuracies and other accuracy information.
 HV9961
 HV9961.The horizontal coordinates were established by GPS observations
 HV9961.and adjusted by the National Geodetic Survey in June 2012.
 HV9961
 HV9961.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9961.been affixed to the stable North American tectonic plate. See 
 HV9961.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9961
 HV9961.The horizontal coordinates are valid at the epoch date displayed above
 HV9961.which is a decimal equivalence of Year/Month/Day.
 HV9961
 HV9961.The orthometric height was determined by GPS observations and a
 HV9961.high-resolution geoid model.
 HV9961
 HV9961.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9961.GEOID18 height accuracy estimate available here.
 HV9961
 HV9961.Click photographs - Photos may exist for this station.
 HV9961
 HV9961.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9961
 HV9961.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9961
 HV9961.The ellipsoidal height was determined by GPS observations
 HV9961.and is referenced to NAD 83.
 HV9961
 HV9961. The following values were computed from the NAD 83(2011) position.
 HV9961
 HV9961;                    North         East     Units Scale Factor Converg.
 HV9961;SPC MD       -   147,463.731   424,197.085   MT  0.99995200   +0 10 31.1
 HV9961;SPC MD       -   483,803.92  1,391,719.94   sFT  0.99995200   +0 10 31.1
 HV9961;UTM  18      - 4,317,605.494   350,987.660   MT  0.99987342   -1 04 58.6
 HV9961
 HV9961!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9961!SPC MD       -   1.00000314  x   0.99995200  =   0.99995514
 HV9961!UTM  18      -   1.00000314  x   0.99987342  =   0.99987656
 HV9961
 HV9961_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5098717605(NAD 83)
 HV9961
 HV9961                          SUPERSEDED SURVEY CONTROL
 HV9961
 HV9961  NAD 83(2007)-  38 59 41.20753(N)    076 43 14.44800(W) AD(2002.00) 0
 HV9961  ELLIP H (02/10/07)  -19.967  (m)                       GP(2002.00)    
 HV9961  ELLIP H (08/30/02)  -19.960  (m)                       GP(       ) 4 2
 HV9961  ELLIP H (09/09/94)  -20.025  (m)                       GP(       ) 4 1
 HV9961  NAD 83(1991)-  38 59 41.20766(N)    076 43 14.44735(W) AD(       ) 1
 HV9961
 HV9961.Superseded values are not recommended for survey control.
 HV9961
 HV9961.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9961.See file dsdata.pdf to determine how the superseded data were derived.
 HV9961
 HV9961_MARKER: DB = BENCH MARK DISK
 HV9961_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 HV9961+WITH SETTING: INFORMATION.
 HV9961_STAMPING: GORF GPS 8
 HV9961_MARK LOGO: WSSC
 HV9961_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV9961_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV9961_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9961+SATELLITE: SATELLITE OBSERVATIONS - November 16, 2001
 HV9961
 HV9961  HISTORY     - Date     Condition        Report By
 HV9961  HISTORY     - 1990     MONUMENTED       NGS
 HV9961  HISTORY     - 19930419 GOOD
 HV9961  HISTORY     - 19970515 GOOD             DMW
 HV9961  HISTORY     - 20010329 GOOD             DMW
 HV9961  HISTORY     - 20011116 GOOD             DMW
 HV9961
 HV9961                          STATION DESCRIPTION
 HV9961
 HV9961'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV9961'THE STATION IS LOCATED IN PRINCE GEORGES, COUNTY, MARYLAND, IN THE
 HV9961'TOWN OF BOWIE.
 HV9961'TO REACH THE STATION FROM THE INTERSECTION OF ANNAPOLIS ROAD (S.R.
 HV9961'450) AND RACETRACK ROAD, PROCEED NORTH ON RACETRACK ROAD FOR 0.4 MI
 HV9961'(0.6 KM) TO THE INTERSECTION WITH YORKTOWN DRIVE.  TURN RIGHT AND
 HV9961'PROCEED EAST ON YORKTOWN DRIVE FOR 0.3 MI (0.5 KM) TO THE
 HV9961'INTERSECTION WITH YOUNGWOOD TURN. TURN RIGHT AND PROCEED NORTH AND
 HV9961'EAST ON YOUNGWOOD TURN FOR 0.3 MI (0.5 KM) TO A PAVED ROAD BETWEEN
 HV9961'HOUSES NO. 13430 AND 13500.  TURN RIGHT ONTO THE PAVED ROAD AND
 HV9961'PROCEED 0.02 MI (0.03 KM) TO A GATE.  PROCEED THROUGH THE GATE, TURN
 HV9961'IMMEDIATELY RIGHT, AND PROCEED APPROXIMATELY 400 FT (121.9 M) TO
 HV9961'ANOTHER GATE.  PASS THROUGH THE GATE AND CONTINUE FOR APPROXIMATELY
 HV9961'0.3 MI (0.5 KM) TO THE STATION ON THE LEFT.
 HV9961'THE STATION IS A SURVEY DISK ENCLOSED IN A MONUMENT CASE, AND STAMPED
 HV9961'GORF GPS 8.  THE DISK IS LOCATED 99 FT (30.2 M) EAST OF A
 HV9961'FENCELINE, 153 FT (46.6 M) SOUTH OF A FENCELINE, AND 129 FT (39.3 M)
 HV9961'NORTHEAST OF A CONCRETE STRUCTURE.
 HV9961
 HV9961                          STATION RECOVERY (1993)
 HV9961
 HV9961'RECOVERED 1993
 HV9961'RECOVERED IN GOOD CONDITION.
 HV9961
 HV9961                          STATION RECOVERY (1997)
 HV9961
 HV9961'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 HV9961'RECOVERED AS DESCRIBED, EXCEPT THAT PART OF THE 1990 DESCRIPTION
 HV9961'SHOULD READ AS FOLLOWS, THE DISK IS LOCATED 99 FT (30.2 M) WEST (NOT
 HV9961'EAST) OF A FENCELINE.  THE REST OF THE DESCRIPTION IS CORRECT.
 HV9961
 HV9961                          STATION RECOVERY (2001)
 HV9961
 HV9961'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 HV9961'IMMEDIATE AREA IS PRESENTLY UNDER CONSTRUCTION (3/01). MARK MAY BE
 HV9961'DESTROYED IN NEAR FUTURE.
 HV9961
 HV9961                          STATION RECOVERY (2001)
 HV9961
 HV9961'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 HV9961'RECOVERY NOTE
 HV9961'STATION FOUND IN GOOD CONDITION 11/2001
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6895 ***********************************************************************
 JV6895  CBN         -  This is a Cooperative Base Network Control Station.
 JV6895  DESIGNATION -  GORF GPS N
 JV6895  PID         -  JV6895
 JV6895  STATE/COUNTY-  MD/HOWARD
 JV6895  COUNTRY     -  US
 JV6895  USGS QUAD   -  SAVAGE (2016)
 JV6895
 JV6895                         *CURRENT SURVEY CONTROL
 JV6895  ______________________________________________________________________
 JV6895* NAD 83(2011) POSITION- 39 13 34.24165(N) 076 48 50.46351(W)   ADJUSTED
 JV6895* NAD 83(2011) ELLIP HT-   124.640 (meters)        (06/27/12)   ADJUSTED
 JV6895* NAD 83(2011) EPOCH   -  2010.00
 JV6895* NAVD 88 ORTHO HEIGHT -   156.888 (meters)      514.72  (feet) ADJUSTED
 JV6895  ______________________________________________________________________
 JV6895  GEOID HEIGHT    -        -32.242 (meters)                     GEOID18
 JV6895  NAD 83(2011) X  -  1,128,606.458 (meters)                     COMP
 JV6895  NAD 83(2011) Y  - -4,817,139.006 (meters)                     COMP
 JV6895  NAD 83(2011) Z  -  4,011,878.562 (meters)                     COMP
 JV6895  LAPLACE CORR    -         -3.67  (seconds)                    DEFLEC18
 JV6895  DYNAMIC HEIGHT  -        156.804 (meters)      514.45  (feet) COMP
 JV6895  MODELED GRAVITY -    980,087.3   (mgal)                       NAVD 88
 JV6895
 JV6895  VERT ORDER      -  SECOND    CLASS I
 JV6895
 JV6895  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6895  Standards:
 JV6895         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6895            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6895  -------------------------------------------------------------------
 JV6895  NETWORK    0.35   0.49           0.16   0.12   0.25     -0.00829222
 JV6895  -------------------------------------------------------------------
 JV6895  Click here for local accuracies and other accuracy information.
 JV6895
 JV6895.The horizontal coordinates were established by GPS observations
 JV6895.and adjusted by the National Geodetic Survey in June 2012.
 JV6895
 JV6895.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6895.been affixed to the stable North American tectonic plate. See 
 JV6895.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6895
 JV6895.The horizontal coordinates are valid at the epoch date displayed above
 JV6895.which is a decimal equivalence of Year/Month/Day.
 JV6895
 JV6895.The orthometric height was determined by differential leveling and
 JV6895.adjusted by the NATIONAL GEODETIC SURVEY
 JV6895.in March 2010.
 JV6895
 JV6895.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6895.GEOID18 height accuracy estimate available here.
 JV6895
 JV6895.Click photographs - Photos may exist for this station.
 JV6895
 JV6895.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6895
 JV6895.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6895
 JV6895.The ellipsoidal height was determined by GPS observations
 JV6895.and is referenced to NAD 83.
 JV6895
 JV6895.The dynamic height is computed by dividing the NAVD 88
 JV6895.geopotential number by the normal gravity value computed on the
 JV6895.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6895.degrees latitude (g = 980.6199 gals.).
 JV6895
 JV6895.The modeled gravity was interpolated from observed gravity values.
 JV6895
 JV6895. The following values were computed from the NAD 83(2011) position.
 JV6895
 JV6895;                    North         East     Units Scale Factor Converg.
 JV6895;SPC MD       -   173,131.312   416,059.047   MT  0.99996850   +0 07 00.2
 JV6895;SPC MD       -   568,014.98  1,365,020.39   sFT  0.99996850   +0 07 00.2
 JV6895;UTM  18      - 4,343,444.126   343,417.056   MT  0.99990189   -1 08 50.6
 JV6895
 JV6895!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6895!SPC MD       -   0.99998045  x   0.99996850  =   0.99994895
 JV6895!UTM  18      -   0.99998045  x   0.99990189  =   0.99988234
 JV6895
 JV6895_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4341743444(NAD 83)
 JV6895
 JV6895|---------------------------------------------------------------------|
 JV6895| PID    Reference Object                     Distance      Geod. Az  |
 JV6895|                                                           dddmmss.s |
 JV6895| JV4039 SENIOR RESET                          9.010 METERS 10015     |
 JV6895|---------------------------------------------------------------------|
 JV6895
 JV6895                          SUPERSEDED SURVEY CONTROL
 JV6895
 JV6895  NAD 83(2007)-  39 13 34.24196(N)    076 48 50.46441(W) AD(2002.00) 0
 JV6895  ELLIP H (02/10/07)  124.658  (m)                       GP(2002.00)    
 JV6895  ELLIP H (02/12/02)  124.657  (m)                       GP(       ) 4 1
 JV6895  NAD 83(1986)-  39 13 34.23925(N)    076 48 50.47310(W) AD(       ) 2
 JV6895  NAD 83(1991)-  39 13 34.24168(N)    076 48 50.46404(W) AD(       ) B
 JV6895  ELLIP H (10/23/91)  124.593  (m)                       GP(       ) 4 1
 JV6895  NAVD 88             156.87   (m)          514.7    (f) LEVELING    3  
 JV6895  NAVD 88 (08/10/94)  156.873  (m)          514.67   (f) SUPERSEDED  3 0
 JV6895  NGVD 29             157.09   (m)          515.4    (f) LEVELING    3  
 JV6895  NGVD 29 (10/23/91)  157.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6895
 JV6895.Superseded values are not recommended for survey control.
 JV6895
 JV6895.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6895.See file dsdata.pdf to determine how the superseded data were derived.
 JV6895
 JV6895_MARKER: F = FLANGE-ENCASED ROD
 JV6895_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6895_STAMPING: GORF GPS N MAY 1990
 JV6895_MARK LOGO: NGS
 JV6895_PROJECTION: RECESSED 3 CENTIMETERS
 JV6895_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6895_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6895_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6895+SATELLITE: SATELLITE OBSERVATIONS - January 21, 2021
 JV6895
 JV6895  HISTORY     - Date     Condition        Report By
 JV6895  HISTORY     - 1990     MONUMENTED       NGS
 JV6895  HISTORY     - 19901125 GOOD             MD-027
 JV6895  HISTORY     - 19910924 GOOD             MD-027
 JV6895  HISTORY     - 19950206 GOOD             MCCRON
 JV6895  HISTORY     - 20000327 GOOD             MDSHA
 JV6895  HISTORY     - 20000915 GOOD             MD-027
 JV6895  HISTORY     - 20030601 GOOD             URS
 JV6895  HISTORY     - 20061001 GOOD             GEOCAC
 JV6895  HISTORY     - 20070525 GOOD             MDSHA
 JV6895  HISTORY     - 20080216 GOOD             GEOCAC
 JV6895  HISTORY     - 20120926 GOOD             WOOLPT
 JV6895  HISTORY     - 20170802 GOOD             NGS
 JV6895  HISTORY     - 20210121 GOOD             PROFLN
 JV6895
 JV6895                          STATION DESCRIPTION
 JV6895
 JV6895'DESCRIBED BY HOWARD COUNTY MARYLAND 1990
 JV6895'RECOVERED IN GOOD CONDITION.
 JV6895
 JV6895                          STATION RECOVERY (1991)
 JV6895
 JV6895'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 1991
 JV6895'STATION IS LOCATED ABOUT 12 KM (7.5 MI) SOUTHWEST OF THE BALTIMORE
 JV6895'BELTWAY (INTERSTATE HIGHWAY 695), ABOUT MIDWAY BETWEEN COLUMBIA,
 JV6895'ELLICOTT CITY AND CATONSVILLE, AND AT THE HOWARD HIGH SCHOOL, IN A
 JV6895'GRASS STRIP BETWEEN THE EXIT ROAD AND A PARKING LOT.
 JV6895'OWNERSHIP--COUNTY BOARD OF EDUCATION.  CONTACT JIM HILLEN
 JV6895'(301-313-2867) IN ADVANCE SO SECURITY CAN BE NOTIFIED.  TO REACH FROM
 JV6895'THE JUNCTION OF INTERSTATE HIGHWAY 95 AND STATE HIGHWAY 175 (EXIT
 JV6895'41), ABOUT 12 KM (7.5 MI) SOUTHWEST OF THE BALTIMORE BELTWAY, GO
 JV6895'NORTHWEST ON HIGHWAY 175 FOR 0.88 KM (0.55 MI) TO STATE HIGHWAY 108
 JV6895'ON THE RIGHT.  BEAR RIGHT, NORTHERLY ON HIGHWAY 108 FOR 4.68 KM (2.91
 JV6895'MI) TO ITS JUNCTION WITH STATE HIGHWAY 104.  TURN LEFT, NORTHWEST, ON
 JV6895'HIGHWAY 108 FOR 0.50 KM (0.31 MI) TO THE SCHOOL ENTRANCE ROAD ON THE
 JV6895'RIGHT.  TURN RIGHT ON ROAD FOR 0.11 KM (0.07 MI) TO A ROAD LEFT IN
 JV6895'FRONT OF THE SCHOOL.  TURN LEFT FOR 0.23 KM (0.14 MI) TO THE EXIT
 JV6895'ROAD ON THE LEFT.  TURN LEFT FOR ABOUT 30 M (98.4 FT) TO THE STATION
 JV6895'ON THE LEFT.  STATION MARK IS A PUNCH HOLE IN THE TOP OF A STEEL ROD
 JV6895'ENCASED IN PCV PIPE WITH AN ALUMINUM LOGO CAP ATTACHED THAT PROJECTS
 JV6895'1 CM.  IT IS 4.2 M (13.8 FT) SOUTHEAST OF THE EXIT ROAD CURB, 13.8 M
 JV6895'(45.3 FT) NORTHEAST OF PARKING LOT EXIT CURB, 3.7 M (12.1 FT)
 JV6895'SOUTHEAST OF THE CENTER OF A MANHOLE COVER IN THE SIDEWALK, 15.2 M
 JV6895'(49.9 FT) WEST-SOUTHWEST OF A METAL LIGHT POLE, 10.5 M (34.4 FT)
 JV6895'NORTH-NORTHWEST OF A FIBERGLASS WITNESS POST IN A TALL HEDGE, AND 9.0
 JV6895'M (29.5 FT) NORTH-NORTHWEST OF TRIANGULATION STATION SENIOR RESET.
 JV6895'DESCRIBED BY G.R.HEID.
 JV6895
 JV6895                          STATION RECOVERY (1995)
 JV6895
 JV6895'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6895'RECOVERED AS DESCRIBED.
 JV6895
 JV6895                          STATION RECOVERY (2000)
 JV6895
 JV6895'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6895'RECOVERED AS DESCRIBED.
 JV6895
 JV6895                          STATION RECOVERY (2000)
 JV6895
 JV6895'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV6895'RECOVERY BY HOWARD COUNTY  2000 FOUND AS DESCRIBED IN GOOD
 JV6895'CONDITION
 JV6895'
 JV6895
 JV6895                          STATION RECOVERY (2003)
 JV6895
 JV6895'RECOVERY NOTE BY URS COMPANY 2003 (JP)
 JV6895'RECOVERED IN GOOD CONDITION.
 JV6895
 JV6895                          STATION RECOVERY (2006)
 JV6895
 JV6895'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 JV6895'RECOVERED IN GOOD CONDITION.
 JV6895
 JV6895                          STATION RECOVERY (2007)
 JV6895
 JV6895'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV6895'RECOVERED IN GOOD CONDITION.  NOTE--THE ALUMINUM LOGO CAP WAS FOUND
 JV6895'REMOVED FROM THE STATION.  A NEW LOGO CAP WAS SET AND INCASED IN
 JV6895'CONCRETE.
 JV6895
 JV6895                          STATION RECOVERY (2008)
 JV6895
 JV6895'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JV6895'NOTE - OMIT REFERENCE TO HEDGE.
 JV6895
 JV6895                          STATION RECOVERY (2012)
 JV6895
 JV6895'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 JV6895'RECOVERED IN GOOD CONDITION.
 JV6895
 JV6895                          STATION RECOVERY (2017)
 JV6895
 JV6895'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (GS)
 JV6895'RECOVERED AS DESCRIBED.
 JV6895
 JV6895                          STATION RECOVERY (2021)
 JV6895
 JV6895'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV6895'THE MARK IS AT THE NORTHWEST END OF THE HOWARD HIGH SCHOOL PARKING
 JV6895'LOT, WHICH IS ORIENTED NORTHWEST-SOUTHEAST.  IT IS 61 FT (18.6 M)
 JV6895'SOUTH-SOUTHWEST OF A STORM MANHOLE, 45.5 SOUTHWEST OF THE NORTHEAST
 JV6895'CURB EXTENDED OF THE PARKING LOT, 14 FT (4.3 M) SOUTHEAST OF THE
 JV6895'SOUTHEAST CURB OF THE EXIT ROAD, 12 FT (3.7 M) SOUTHEAST OF A STORM
 JV6895'DRAIN MANHOLE.
 JV6895'
 JV6895'THE LOGO CAP IS FLUSH WITH SURROUNDING GRASS.  THE ROD IS 0.1 FT (3
 JV6895'CM) BELOW THE CAP.  ONE OF THE TWO CAP HINGES IS BROKEN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4807 ***********************************************************************
 AB4807  DESIGNATION -  GOSNELL
 AB4807  PID         -  AB4807
 AB4807  STATE/COUNTY-  MD/CARROLL
 AB4807  COUNTRY     -  US
 AB4807  USGS QUAD   -  WINFIELD (2016)
 AB4807
 AB4807                         *CURRENT SURVEY CONTROL
 AB4807  ______________________________________________________________________
 AB4807* NAD 83(2011) POSITION- 39 24 11.84918(N) 077 05 55.12428(W)   ADJUSTED
 AB4807* NAD 83(2011) ELLIP HT-   199.992 (meters)        (06/27/12)   ADJUSTED
 AB4807* NAD 83(2011) EPOCH   -  2010.00
 AB4807* NAVD 88 ORTHO HEIGHT -   231.9   (meters)      761.    (feet) GPS OBS
 AB4807  ______________________________________________________________________
 AB4807  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4807  GEOID HEIGHT    -        -31.948 (meters)                     GEOID99
 AB4807  GEOID HEIGHT    -        -31.946 (meters)                     GEOID18
 AB4807  NAD 83(2011) X  -  1,101,893.889 (meters)                     COMP
 AB4807  NAD 83(2011) Y  - -4,810,598.821 (meters)                     COMP
 AB4807  NAD 83(2011) Z  -  4,027,139.790 (meters)                     COMP
 AB4807  LAPLACE CORR    -          1.58  (seconds)                    DEFLEC18
 AB4807
 AB4807  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4807  Standards:
 AB4807         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4807            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4807  -------------------------------------------------------------------
 AB4807  NETWORK    2.23   5.45           0.94   0.88   2.78      0.03388878
 AB4807  -------------------------------------------------------------------
 AB4807  Click here for local accuracies and other accuracy information.
 AB4807
 AB4807.The horizontal coordinates were established by GPS observations
 AB4807.and adjusted by the National Geodetic Survey in June 2012.
 AB4807
 AB4807.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4807.been affixed to the stable North American tectonic plate. See 
 AB4807.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4807
 AB4807.The horizontal coordinates are valid at the epoch date displayed above
 AB4807.which is a decimal equivalence of Year/Month/Day.
 AB4807
 AB4807.The orthometric height was determined by GPS observations and a
 AB4807.high-resolution geoid model.
 AB4807
 AB4807.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4807.GEOID18 height accuracy estimate available here.
 AB4807
 AB4807.Click photographs - Photos may exist for this station.
 AB4807
 AB4807.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4807
 AB4807.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4807
 AB4807.The ellipsoidal height was determined by GPS observations
 AB4807.and is referenced to NAD 83.
 AB4807
 AB4807. The following values were computed from the NAD 83(2011) position.
 AB4807
 AB4807;                    North         East     Units Scale Factor Converg.
 AB4807;SPC MD       -   192,782.514   391,503.474   MT  0.99999216   -0 03 42.9
 AB4807;SPC MD       -   632,487.30  1,284,457.65   sFT  0.99999216   -0 03 42.9
 AB4807;UTM  18      - 4,363,633.009   319,302.786   MT  1.00000203   -1 19 57.1
 AB4807
 AB4807!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4807!SPC MD       -   0.99996862  x   0.99999216  =   0.99996078
 AB4807!UTM  18      -   0.99996862  x   1.00000203  =   0.99997065
 AB4807
 AB4807:                Primary Azimuth Mark                     Grid Az
 AB4807:SPC MD       -  GOSNELL AZ MK                            351 01 56.6
 AB4807:UTM  18      -  GOSNELL AZ MK                            352 18 10.8
 AB4807
 AB4807_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1930263633(NAD 83)
 AB4807
 AB4807|---------------------------------------------------------------------|
 AB4807| PID    Reference Object                     Distance      Geod. Az  |
 AB4807|                                                           dddmmss.s |
 AB4807| AB4737 GOSNELL AZ MK                       APPROX. 0.8 KM 3505813.7 |
 AB4807|---------------------------------------------------------------------|
 AB4807
 AB4807                          SUPERSEDED SURVEY CONTROL
 AB4807
 AB4807  NAD 83(2007)-  39 24 11.84949(N)    077 05 55.12595(W) AD(2002.00) 0
 AB4807  ELLIP H (02/10/07)  200.002  (m)                       GP(2002.00)    
 AB4807  ELLIP H (08/30/02)  199.982  (m)                       GP(       ) 4 2
 AB4807  NAD 83(1991)-  39 24 11.84983(N)    077 05 55.12611(W) AD(       ) 1
 AB4807  ELLIP H (07/03/96)  199.911  (m)                       GP(       ) 1 1
 AB4807  NAVD 88 (07/03/96)  231.9    (m)  GEOID93  model used  GPS OBS        
 AB4807
 AB4807.Superseded values are not recommended for survey control.
 AB4807
 AB4807.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4807.See file dsdata.pdf to determine how the superseded data were derived.
 AB4807
 AB4807_MARKER: DD = SURVEY DISK
 AB4807_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4807_STAMPING: GOSNELL 1995
 AB4807_MARK LOGO: MD-013
 AB4807_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4807_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4807+STABILITY: SURFACE MOTION
 AB4807_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4807+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4807
 AB4807  HISTORY     - Date     Condition        Report By
 AB4807  HISTORY     - 1995     MONUMENTED       MD-013
 AB4807
 AB4807                          STATION DESCRIPTION
 AB4807
 AB4807'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4807'STATION IS LOCATED ABOUT 12.5 MI (20.1 KM) SOUTHWEST OF WESTMINSTER
 AB4807'AND ABOUT 3 MI (4.8 KM) NORTHEAST OF MOUNT AIRY. TO REACH STATION FROM
 AB4807'THE INTERSECTION OF MD ROUTE 26 (LIBERTY ROAD ) AND MD ROUTE 27 (RIDGE
 AB4807'ROAD) GO SOUTH ON MD ROUTE 27 FOR 2.4 MI (3.9 KM) TO THE INTERSECTION
 AB4807'WITH CABBAGE SPRING ROAD. TURN LEFT ON CABBAGE SPRING ROAD AND GO
 AB4807'SOUTHEAST FOR 1.9 MI (3.1 KM) TO THE INTERSECTION WITH GILLIS FALLS
 AB4807'ROAD AND THE STATION. STATION IS ON THE SOUTH SIDE OF THE INTERSECTION
 AB4807'ON THE GROUNDS OF THE MT. OLIVE CHURCH, BETWEEN THE SIDEWALK AND THE
 AB4807'CEMETERY. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4807'MONMENT SET FLUSH WITH THE GROUND. IT IS 61.5 FT (18.7 M) SOUTH OF THE
 AB4807'CENTERLINE OF GILLIS FALLS ROAD, 41.4 FT (12.6 M) SOUTHWEST OF THE
 AB4807'SOUTHWEST CORNER OF THE CHURCH BUILDING, 2.0 FT (0.6 M) SOUTH OF THE
 AB4807'EDGE OF THE WALK AND 14.1 FT (4.3 M) NORTH OF THE HEADSTONE FOR SAMUEL
 AB4807'LESLIE POOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4737 ***********************************************************************
 AB4737  DESIGNATION -  GOSNELL AZ MK
 AB4737  PID         -  AB4737
 AB4737  STATE/COUNTY-  MD/CARROLL
 AB4737  COUNTRY     -  US
 AB4737  USGS QUAD   -  WINFIELD (2016)
 AB4737
 AB4737                         *CURRENT SURVEY CONTROL
 AB4737  ______________________________________________________________________
 AB4737* NAD 83(2011) POSITION- 39 24 37.20705(N) 077 06 00.31901(W)   ADJUSTED
 AB4737* NAD 83(2011) ELLIP HT-   193.731 (meters)        (06/27/12)   ADJUSTED
 AB4737* NAD 83(2011) EPOCH   -  2010.00
 AB4737* NAVD 88 ORTHO HEIGHT -   225.6   (meters)      740.    (feet) GPS OBS
 AB4737  ______________________________________________________________________
 AB4737  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4737  GEOID HEIGHT    -        -31.962 (meters)                     GEOID99
 AB4737  GEOID HEIGHT    -        -31.960 (meters)                     GEOID18
 AB4737  NAD 83(2011) X  -  1,101,660.820 (meters)                     COMP
 AB4737  NAD 83(2011) Y  - -4,810,137.919 (meters)                     COMP
 AB4737  NAD 83(2011) Z  -  4,027,740.077 (meters)                     COMP
 AB4737  LAPLACE CORR    -          1.79  (seconds)                    DEFLEC18
 AB4737
 AB4737  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4737  Standards:
 AB4737         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4737            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4737  -------------------------------------------------------------------
 AB4737  NETWORK    2.21   5.39           0.93   0.88   2.75      0.02921508
 AB4737  -------------------------------------------------------------------
 AB4737  Click here for local accuracies and other accuracy information.
 AB4737
 AB4737.The horizontal coordinates were established by GPS observations
 AB4737.and adjusted by the National Geodetic Survey in June 2012.
 AB4737
 AB4737.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4737.been affixed to the stable North American tectonic plate. See 
 AB4737.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4737
 AB4737.The horizontal coordinates are valid at the epoch date displayed above
 AB4737.which is a decimal equivalence of Year/Month/Day.
 AB4737
 AB4737.The orthometric height was determined by GPS observations and a
 AB4737.high-resolution geoid model.
 AB4737
 AB4737.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4737.GEOID18 height accuracy estimate available here.
 AB4737
 AB4737.Click photographs - Photos may exist for this station.
 AB4737
 AB4737.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4737
 AB4737.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4737
 AB4737.The ellipsoidal height was determined by GPS observations
 AB4737.and is referenced to NAD 83.
 AB4737
 AB4737. The following values were computed from the NAD 83(2011) position.
 AB4737
 AB4737;                    North         East     Units Scale Factor Converg.
 AB4737;SPC MD       -   193,564.675   391,380.045   MT  0.99999330   -0 03 46.1
 AB4737;SPC MD       -   635,053.44  1,284,052.70   sFT  0.99999330   -0 03 46.1
 AB4737;UTM  18      - 4,364,417.722   319,196.732   MT  1.00000250   -1 20 01.1
 AB4737
 AB4737!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4737!SPC MD       -   0.99996961  x   0.99999330  =   0.99996291
 AB4737!UTM  18      -   0.99996961  x   1.00000250  =   0.99997211
 AB4737
 AB4737:                Primary Azimuth Mark                     Grid Az
 AB4737:SPC MD       -  GOSNELL                                  171 01 56.5
 AB4737:UTM  18      -  GOSNELL                                  172 18 11.5
 AB4737
 AB4737_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1919664417(NAD 83)
 AB4737
 AB4737|---------------------------------------------------------------------|
 AB4737| PID    Reference Object                     Distance      Geod. Az  |
 AB4737|                                                           dddmmss.s |
 AB4737| AB4807 GOSNELL                             APPROX. 0.8 KM 1705810.4 |
 AB4737|---------------------------------------------------------------------|
 AB4737
 AB4737                          SUPERSEDED SURVEY CONTROL
 AB4737
 AB4737  NAD 83(2007)-  39 24 37.20736(N)    077 06 00.32068(W) AD(2002.00) 0
 AB4737  ELLIP H (02/10/07)  193.741  (m)                       GP(2002.00)    
 AB4737  ELLIP H (08/30/02)  193.721  (m)                       GP(       ) 4 2
 AB4737  NAD 83(1991)-  39 24 37.20770(N)    077 06 00.32085(W) AD(       ) 1
 AB4737  ELLIP H (07/03/96)  193.650  (m)                       GP(       ) 1 1
 AB4737  NAVD 88 (07/03/96)  225.7    (m)  GEOID93  model used  GPS OBS        
 AB4737
 AB4737.Superseded values are not recommended for survey control.
 AB4737
 AB4737.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4737.See file dsdata.pdf to determine how the superseded data were derived.
 AB4737
 AB4737_MARKER: DD = SURVEY DISK
 AB4737_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4737_STAMPING: GOSNELL AZI 1995
 AB4737_MARK LOGO: MD-013
 AB4737_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4737_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4737+STABILITY: SURFACE MOTION
 AB4737_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4737+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4737
 AB4737  HISTORY     - Date     Condition        Report By
 AB4737  HISTORY     - 1995     MONUMENTED       MD-013
 AB4737
 AB4737                          STATION DESCRIPTION
 AB4737
 AB4737'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4737'STATION IS LOCATED ABOUT 12 MI (19.3 KM) SOUTHWEST OF WESTMINSTER AND
 AB4737'ABOUT 3 MI (4.8 KM) NORTHEAST OF MOUNT AIRY. TO REACH STATION FROM THE
 AB4737'INTERSECTION OF MD ROUTE 26 (LIBERTY ROAD ) AND MD ROUTE 27 (RIDGE
 AB4737'ROAD) GO SOUTH ON MD ROUTE 27 FOR 2.4 MI (3.9 KM) TO THE INTERSECTION
 AB4737'WITH CABBAGE SPRING ROAD. TURN LEFT ON CABBAGE SPRING ROAD AND GO
 AB4737'SOUTHEST FOR 1.2 MI (1.9 KM) TO THE STATION ON THE LEFT. STATION MARK
 AB4737'IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONMENT SET FLUSH WITH
 AB4737'THE GROUND. IT IS 18.5 FT (5.6 M) NORTHEAST OF THE CENTERLINE OF THE
 AB4737'ROAD, 18.5 FT (5.6 M) SOUTHEAST OF THE CENTERLINE OF A GRAVEL DRIVE
 AB4737'LEADING NORTHEAST TO HOUSE NO. 5905, 20.0 FT (6.1 M) WEST OF POWER
 AB4737'POLE NO.10062 AND 72.0 FT (21.9 M) NORTHWEST OF THE CENTERLINE OF A
 AB4737'PAVED DRIVE LEADING NORTHEAST TO HOUSE NO.5915.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1945 ***********************************************************************
 HU1945  DESIGNATION -  GOVER 1907
 HU1945  PID         -  HU1945
 HU1945  STATE/COUNTY-  MD/DORCHESTER
 HU1945  COUNTRY     -  US
 HU1945  USGS QUAD   -  NANTICOKE (2016)
 HU1945
 HU1945                         *CURRENT SURVEY CONTROL
 HU1945  ______________________________________________________________________
 HU1945* NAD 83(1991) POSITION- 38 20 38.18421(N) 075 54 28.44120(W)   ADJUSTED
 HU1945* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1945  ______________________________________________________________________
 HU1945  GEOID HEIGHT    -        -35.595 (meters)                     GEOID18
 HU1945  LAPLACE CORR    -         -2.83  (seconds)                    DEFLEC18
 HU1945  HORZ ORDER      -  THIRD
 HU1945
 HU1945.The horizontal coordinates were established by classical geodetic methods
 HU1945.and adjusted by the National Geodetic Survey in January 1992.
 HU1945
 HU1945.The orthometric height was scaled from a topographic map.
 HU1945
 HU1945.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1945.GEOID18 height accuracy estimate available here.
 HU1945
 HU1945.Click photographs - Photos may exist for this station.
 HU1945
 HU1945.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1945
 HU1945. The following values were computed from the NAD 83(1991) position.
 HU1945
 HU1945;                    North         East     Units Scale Factor Converg.
 HU1945;SPC MD       -    75,751.360   495,469.095   MT  0.99999265   +0 41 07.6
 HU1945;SPC MD       -   248,527.59  1,625,551.52   sFT  0.99999265   +0 41 07.6
 HU1945;UTM  18      - 4,244,366.988   420,661.728   MT  0.99967752   -0 33 47.8
 HU1945
 HU1945!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1945!SPC MD       -   1.00000562  x   0.99999265  =   0.99999827
 HU1945!UTM  18      -   1.00000562  x   0.99967752  =   0.99968314
 HU1945
 HU1945:                Primary Azimuth Mark                     Grid Az
 HU1945:SPC MD       -  RAG                                      179 01 55.7
 HU1945:UTM  18      -  RAG                                      180 16 51.1
 HU1945
 HU1945_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2066144366(NAD 83)
 HU1945
 HU1945|---------------------------------------------------------------------|
 HU1945| PID    Reference Object                     Distance      Geod. Az  |
 HU1945|                                                           dddmmss.s |
 HU1945| HU1954 NANTICOKE RIVER UPPER BEACON        APPROX. 2.0 KM 1043708.6 |
 HU1945| HU1946 RAG                                 APPROX. 5.7 KM 1794303.3 |
 HU1945| HU1952 OYSTER BAR BEACON                   APPROX. 2.3 KM 1872918.4 |
 HU1945| HU1943 GRAVELLY POINT BEACON               APPROX. 5.7 KM 2010329.2 |
 HU1945|---------------------------------------------------------------------|
 HU1945
 HU1945                          SUPERSEDED SURVEY CONTROL
 HU1945
 HU1945  NAD 83(1986)-  38 20 38.18229(N)    075 54 28.46202(W) AD(       ) 3
 HU1945  NAD 27      -  38 20 37.74700(N)    075 54 29.70100(W) AD(       ) 3
 HU1945  USSD        -  38 20 38.16300(N)    075 54 29.44900(W) AD(       ) 3
 HU1945
 HU1945.Superseded values are not recommended for survey control.
 HU1945
 HU1945.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1945.See file dsdata.pdf to determine how the superseded data were derived.
 HU1945
 HU1945_MARKER: H = DRILL HOLE
 HU1945_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1945_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1945+STABILITY: SURFACE MOTION
 HU1945
 HU1945  HISTORY     - Date     Condition        Report By
 HU1945  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1945  HISTORY     - 1932     GOOD             CGS
 HU1945  HISTORY     - 1942     GOOD             CGS
 HU1945  HISTORY     - 1965     SEE DESCRIPTION  LOCENG
 HU1945
 HU1945                          STATION DESCRIPTION
 HU1945
 HU1945'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1945'STATION IS ON THE NORTHWESTERN SHORE OF NANTICOKE RIVER, ABOUT
 HU1945'1-3/4 MILES W-NW OF ENTRANCE TO WETIPQUIN CREEK, AND 1/8 MILE N
 HU1945'OF COVE NAMED PERCH HAUL, ON A POINT OF MARSH COVERED WITH GRASS
 HU1945'AND WATER BUSHES, ABOUT 15 YARDS NW OF EXTREME END OF POINT, 200
 HU1945'YARDS E-NE OF SHANTY AMONG BUSHES AND SMALL TREES, 1/4 MILE E
 HU1945'OF CLUMP OF ABOUT 50 PINE TREES, AND 1/4 MILE SE OF ANOTHER
 HU1945'CLUMP OF TREES.  STATION MARK IS MARKED BY A HOLE IN THE CENTER
 HU1945'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT,
 HU1945'AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HU1945'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HU1945'COUNTER-SUNK IN TOP OF POST.  DISTANCES BEARINGS TO VARIOUS
 HU1945'POINTS OF REFERENCE ARE AS FOLLOWS--TANGENT OF LAND, 1 MILE,
 HU1945'S 13 DEG 54 MIN W.  TWO PINE TREES TOGETHER, 3/4 MILE, S 61 DEG 37
 HU1945'MIN W.  CENTER OF SHANTY, 200 YARDS, S 76 DEG 56 MIN W.  CLUMP OF
 HU1945'PINE TREES, 1/4 MILE, N 77 DEG 34 MIN W.  CLUMP OF PINE TREES,
 HU1945'1/4 MILE, N 25 DEG 10 MIN W.  INSIDE EDGE OF COVE, 100 YARDS, 180
 HU1945'DEG.  CLUMP OF SMALL PINE TREES, 1/4 MILE, N 54 DEG 01 MIN E.
 HU1945'TANGENT OF POINT OF LAND, 1-1/2 MILES, N 68 DEG 05 MIN E.  LEFT
 HU1945'TANGENT OF SANDY HILL WHARF, 3 MILES N 74 DEG 32 MIN E.  LARGE
 HU1945'HOUSE, 3-1/4 MILES, N 84 DEG 57 MIN E.
 HU1945
 HU1945                          STATION RECOVERY (1932)
 HU1945
 HU1945'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1945'ORIGINAL DESCRIPTION VERY GOOD, EXCEPT THAT THE STATION IS 9
 HU1945'YARDS BACK FROM THE SHORE INSTEAD OF 15 YARDS, AND 3/8 MILE E-NE
 HU1945'OF STATION IS A HOUSE IN A SMALL BUT DENSE GROUP OF TREES AND
 HU1945'BUSHES.  TREES AND HOUSE ARE 30 YARDS BACK FROM BEACH.  HOUSE IS
 HU1945'BARELY VISIBLE FROM RIVER.
 HU1945
 HU1945                          STATION RECOVERY (1942)
 HU1945
 HU1945'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1945'THE STATION IS ON THE NORTHWESTERN SHORE OF THE NANTICOKE RIVER,
 HU1945'ABOUT 1-3/4 MILES WNW OF THE ENTRANCE TO WETIPQUIN CREEK, ON A
 HU1945'POINT OF MARSH, COVERED WITH GRASS AND BRUSH.  ABOUT 15 YARDS NW
 HU1945'OF THE EXTREME END OF THE POINT, 200 YARDS ENE OF A SHANTY IN THE
 HU1945'BRUSH AND TREES, 3/8 MILE ENE OF THE STATION IS A HOUSE IN DENSE
 HU1945'BRUSH AND TREES.
 HU1945'
 HU1945'THE STATION IS MARKED BY A 3/4-INCH HOLE, CENTER OF WHICH IS
 HU1945'THE STATION, IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HU1945'SURVEY STANDARD 8-INCH CONCRETE MONUMENT, WITH THE LETTERS
 HU1945'M.S.F.C. AND U.S.C.S. COUNTERSUNK IN THE TOP.  THE STATION EXTENDS
 HU1945'3 INCHES ABOVE GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1945
 HU1945                          STATION RECOVERY (1965)
 HU1945
 HU1945'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1965
 HU1945'RECOVERED BY MDDCBA.
 HU1945'
 HU1945'STATION WAS DESTROYED - LYING ON SIDE IN WATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6776 ***********************************************************************
 HV6776  DESIGNATION -  GOVERNOR
 HV6776  PID         -  HV6776
 HV6776  STATE/COUNTY-  MD/CALVERT
 HV6776  COUNTRY     -  US
 HV6776  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6776
 HV6776                         *CURRENT SURVEY CONTROL
 HV6776  ______________________________________________________________________
 HV6776* NAD 83(1993) POSITION- 38 29 53.55490(N) 076 30 16.98843(W)   ADJUSTED
 HV6776* NAVD 88 ORTHO HEIGHT -    25.    (meters)       82.    (feet) SCALED
 HV6776  ______________________________________________________________________
 HV6776  GEOID HEIGHT    -        -34.126 (meters)                     GEOID18
 HV6776  LAPLACE CORR    -         -5.10  (seconds)                    DEFLEC18
 HV6776  HORZ ORDER      -  FIRST
 HV6776
 HV6776.The horizontal coordinates were established by classical geodetic methods
 HV6776.and adjusted by the National Geodetic Survey in November 1994.
 HV6776
 HV6776.The orthometric height was scaled from a topographic map.
 HV6776
 HV6776.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6776.GEOID18 height accuracy estimate available here.
 HV6776
 HV6776.Click photographs - Photos may exist for this station.
 HV6776
 HV6776.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6776
 HV6776. The following values were computed from the NAD 83(1993) position.
 HV6776
 HV6776;                    North         East     Units Scale Factor Converg.
 HV6776;SPC MD       -    92,421.798   443,204.354   MT  0.99997143   +0 18 39.1
 HV6776;SPC MD       -   303,220.52  1,454,079.62   sFT  0.99997143   +0 18 39.1
 HV6776;UTM  18      - 4,262,167.463   368,785.024   MT  0.99981203   -0 56 12.5
 HV6776
 HV6776!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6776!SPC MD       -   1.00000147  x   0.99997143  =   0.99997290
 HV6776!UTM  18      -   1.00000147  x   0.99981203  =   0.99981350
 HV6776
 HV6776:                Primary Azimuth Mark                     Grid Az
 HV6776:SPC MD       -  GOVERNOR AZ MK                           006 30 24.9
 HV6776:UTM  18      -  GOVERNOR AZ MK                           007 45 16.5
 HV6776
 HV6776_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6878562167(NAD 83)
 HV6776
 HV6776|---------------------------------------------------------------------|
 HV6776| PID    Reference Object                     Distance      Geod. Az  |
 HV6776|                                                           dddmmss.s |
 HV6776| CX2803 GOVERNOR AZ MK                                     0064904.0 |
 HV6776| CX2804 GOVERNOR RM 1                        19.539 METERS 09027     |
 HV6776| CX2805 GOVERNOR RM 2                        25.379 METERS 31711     |
 HV6776|---------------------------------------------------------------------|
 HV6776
 HV6776                          SUPERSEDED SURVEY CONTROL
 HV6776
 HV6776  NAD 83(1991)-  38 29 53.55535(N)    076 30 16.98881(W) AD(       ) 1
 HV6776  NAD 83(1986)-  38 29 53.55421(N)    076 30 17.00314(W) AD(       ) 1
 HV6776  NAD 27      -  38 29 53.11200(N)    076 30 18.17400(W) AD(       ) 1
 HV6776
 HV6776.Superseded values are not recommended for survey control.
 HV6776
 HV6776.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6776.See file dsdata.pdf to determine how the superseded data were derived.
 HV6776
 HV6776_MARKER: DS = TRIANGULATION STATION DISK
 HV6776_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6776_STAMPING: GOVERNOR 1934
 HV6776_MARK LOGO: CGS
 HV6776_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6776+STABILITY: SURFACE MOTION
 HV6776
 HV6776  HISTORY     - Date     Condition        Report By
 HV6776  HISTORY     - 1934     MONUMENTED       CGS
 HV6776  HISTORY     - 1942     GOOD             CGS
 HV6776  HISTORY     - 1944     GOOD             CGS
 HV6776  HISTORY     - 1947     GOOD             CGS
 HV6776  HISTORY     - 1960     GOOD             CGS
 HV6776  HISTORY     - 1990     GOOD             MDDNR
 HV6776
 HV6776                          STATION DESCRIPTION
 HV6776
 HV6776'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6776'STATION IS LOCATED ON THE PROPERTY OF W.W. WOODWARD, ON A HILL SW
 HV6776'OF KENWOOD BEACH, 12.84 METERS W OF THE CENTER LINE OF NORTH
 HV6776'AVENUE, 9.52 METERS S OF THE CENTER LINE OF A DIM DIRT ROAD, AND
 HV6776'6.88 METERS NE OF THE NW CORNER OF A BARN.
 HV6776'
 HV6776'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE DISKS
 HV6776'SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HV6776'
 HV6776'REFERENCE MARK NO.1 IS 5.88 METERS SSE OF THE CENTER OF NORTH
 HV6776'AVENUE AND CALVERT STREET AND 3.46 METERS SW OF A POLE.  THE MARK
 HV6776'PROJECTS ABOUT 3 INCHES ABOVE GROUND.
 HV6776'
 HV6776'REFERENCE MARK NO.2 IS 3.60 METERS NE OF THE CENTER LINE OF A DIM
 HV6776'DIRT ROAD WHERE IT TURNS N AND 2.48 METERS WSW OF A SMALL CHERRY
 HV6776'TREE.  THE MARK PROJECTS ABOUT 6 INCHES ABOVE THE SURFACE OF THE
 HV6776'GROUND.
 HV6776'
 HV6776'NOTE--NO AZIMUTH MARK WAS SET AS THERE WAS NO SUITABLE PLACE
 HV6776'VISIBLE FROM GROUND.
 HV6776
 HV6776                          STATION RECOVERY (1942)
 HV6776
 HV6776'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6776'THE STATION AND BOTH REFERENCE MARKS WERE RECOVERED IN GOOD
 HV6776'CONDITION.  THE NEW DESCRIPTION FOLLOWS--
 HV6776'
 HV6776'THE STATION IS ON THE PROPERTY OF W.W. WOODWARD, ON THE HILL ABOUT
 HV6776'200 YARDS SW OF KENWOOD BEACH.  IT IS 12.84 METERS W OF THE
 HV6776'CENTER OF NORTH AVENUE, 9.52 METERS S OF THE CENTER OF A DIM DIRT
 HV6776'ROAD, AND 6.88 METERS NE OF THE NW CORNER OF THE BARN.  THE MARK,
 HV6776'NOTES 1A AND 7A, PROJECTS ABOUT 2 INCHES ABOVE THE GROUND AND IS
 HV6776'STAMPED GOVENOR 1934.
 HV6776'
 HV6776'REFERENCE MARK NO.1 IS E OF THE STATION, 5.88 METERS SSE OF THE
 HV6776'CENTER OF NORTH AVENUE AND CALVERT STREET, AND 31 FEET E OF POWER
 HV6776'LINE POLE NO. 29.  THE MARK, NOTE 11A, PROJECTS ABOUT 2 INCHES
 HV6776'ABOVE THE GROUND AND IS STAMPED GOVENOR 1934.
 HV6776'
 HV6776'REFERENCE MARK NO.2 IS WNW OF THE STATION, 3.6 METERS NE OF THE
 HV6776'CENTER OF A DIM DIRT ROAD WHERE IT TURNS N AND 2.5 METERS WSW OF A
 HV6776'CHERRY TREE.  THE MARK, NOTE 11A, PROJECTS ABOUT 2 INCHES ABOVE
 HV6776'THE GROUND AND IS STAMPED GOVENOR 1934.
 HV6776'
 HV6776'AN AZIMUTH MARK WAS ESTABLISHED 0.25 MILE N OF THE STATION, 20
 HV6776'FEET S OF THE S CORNER OF A LARGE 2-STORY YELLOW HOUSE WITH A
 HV6776'GARAGE IN THE BASEMENT, 6 FEET SE OF THE CURB OF THE STREET NW
 HV6776'PAST THE BACK OF THE HOUSE, AND ABOUT 100 YARDS NW OF THE MAIN
 HV6776'PAVED ROAD.  THE MARK, NOTE 11A, PROJECTS ABOUT 6 INCHES ABOVE THE
 HV6776'GROUND AND IS STAMPED GOVERNOR 1942.  TO REACH THE AZIMUTH MARK
 HV6776'FROM THE STATION GO BACK TO THE BEACH.  THEN AWAY FROM THE BEACH
 HV6776'ON THE MAIN PAVED ROAD FOR 100 YARDS.  THEN TURN SHARP RIGHT ON
 HV6776'THE GRAVEL STREET AND DRIVE UP THE HILL 100 YARDS TO THE YELLOW
 HV6776'HOUSE AND THE MARK.
 HV6776'
 HV6776'TO REACH THE STATION FROM PRINCE FREDERICK GO S ON STATE HIGHWAY 2
 HV6776'FOR 5.3 MILES TO THE JUNCTION WITH GOVERNOR RUN ROAD.  TURN LEFT
 HV6776'AND GO 0.8 MILE TO KENWOOD BEACH.  TURN RIGHT AND GO 0.1 MILE
 HV6776'ALONG THE BEACH.  THEN TURN RIGHT AND DRIVE UP HILL 0.15 MILE TO
 HV6776'BARN AND THE STATION.
 HV6776'
 HV6776'AN 87-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT STATION WILSON 2.
 HV6776'
 HV6776'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION HOWE.
 HV6776
 HV6776                          STATION RECOVERY (1944)
 HV6776
 HV6776'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944 (LPR)
 HV6776'RECOVERED AS DESCRIBED.  ALL MARKS IN GOOD CONDITION.  DIRECTION
 HV6776'TO REFERENCE MARK 2 WAS FOUND TO BE 100 DEG IN ERROR AS CLOSE AS
 HV6776'CAN BE SCALED FROM TOPOGRAPHIC SHEET AND SHOULD BE ABOUT 328 DEG
 HV6776'WITH BUCKLER AS INITIAL INSTEAD OF 228 DEG.
 HV6776'
 HV6776'AZIMUTH MARK NOT LISTED IN ORIGINAL DESCRIPTION BUT WAS VISIBLE
 HV6776'FROM GROUND THROUGH BRUSH AND TREES.
 HV6776
 HV6776                          STATION RECOVERY (1947)
 HV6776
 HV6776'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947 (MJT)
 HV6776'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 HV6776'TO BE IN GOOD CONDITION.  THE STATION WAS NOT OCCUPIED AT THIS
 HV6776'TIME, THEREFORE NO DISTANCES OR DIRECTIONS WERE MEASURED.  A
 HV6776'77-FOOT LIGHT STAND WAS ERECTED TO BE VISIBLE FROM STATION MARTIN
 HV6776'ON TAYLORS ISLAND.  A COMPLETE NEW DESCRIPTION FOLLOWS--
 HV6776'
 HV6776'THE STATION IS ON THE PROPERTY OF MR. W.W. WOODWARD, ON THE HILL
 HV6776'ABOUT 200 YARDS SW OF KENWOOD BEACH.  IT IS 12.8 METERS W OF THE
 HV6776'CENTER LINE OF NORTH AVENUE, 9.5 METERS S OF THE CENTER LINE OF A
 HV6776'DIM TRACK ROAD, AND 6.9 METERS NE OF THE NW CORNER OF THE OLD
 HV6776'BARN ON THE HILL.  MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS
 HV6776'STAMPED GOVERNOR 1934.
 HV6776'
 HV6776'REFERENCE MARK 1 IS 64.10 FEET E OF THE STATION, IN THE EDGE OF A
 HV6776'LAWN ACROSS THE STREET FROM THE STATION.  MARK IS FLUSH AND THE
 HV6776'DISK IS STAMPED GOVERNOR NO 1 1934.
 HV6776'
 HV6776'REFERENCE MARK 2 IS 83.26 FEET WNW OF THE STATION, IN THE EDGE OF
 HV6776'SOME TIMBER.  THE MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS
 HV6776'STAMPED GOVERNOR NO 2 1934.
 HV6776'
 HV6776'THE AZIMUTH MARK IS 0.25 MILE N OF THE STATION, 20 FEET S OF THE S
 HV6776'CORNER OF A LARGE YELLOW HOUSE, 6 FEET SE OF THE CURB, AND 100
 HV6776'YARDS NW OF THE MAIN ROAD.  THE MARK PROJECTS ABOUT 6 INCHES AND
 HV6776'THE DISK IS STAMPED GOVERNOR 1942.
 HV6776'
 HV6776'TO REACH THE STATION FROM THE CALVERT HOTEL IN PRINCE FREDRICK, GO
 HV6776'S ON STATE HIGHWAY 2 FOR 5.0 MILES TO A SIDE ROAD LEFT.  GO 0.8
 HV6776'MILE ALONG THIS ROAD TO KENWOOD BEACH, BEAR RIGHT ALONG THE BEACH
 HV6776'FOR 0.05 MILE, TURN RIGHT UP THE HILL FOR 0.15 MILE TO AN
 HV6776'UNPAINTED BARN AND THE STATION AS DESCRIBED.
 HV6776
 HV6776                          STATION RECOVERY (1960)
 HV6776
 HV6776'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6776'STATION AND REFERENCE MARK 2 FOUND IN GOOD CONDITION.  RM 1 AND
 HV6776'AZIMUTH MARK WERE SEARCHED FOR BUT COULD NOT BE FOUND.  PREVIOUS
 HV6776'DESCRIPTIONS ARE COMPLETE AND ADEQUATE WITH THE FOLLOWING
 HV6776'EXCEPTIONS.  REFERENCE MARK 2 IS 7.24 METERS S.S.W. OF THE S.W.
 HV6776'CORNER OF A SMALL CONCRETE BUILDING.
 HV6776
 HV6776                          STATION RECOVERY (1990)
 HV6776
 HV6776'RECOVERY NOTE BY MD DEPT OF NAT RES 1990 (LW)
 HV6776'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6366 ***********************************************************************
 HV6366  DESIGNATION -  GOWAN
 HV6366  PID         -  HV6366
 HV6366  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6366  COUNTRY     -  US
 HV6366  USGS QUAD   -  ANNAPOLIS (2016)
 HV6366
 HV6366                         *CURRENT SURVEY CONTROL
 HV6366  ______________________________________________________________________
 HV6366* NAD 83(1991) POSITION- 38 53 13.64824(N) 076 29 20.91370(W)   ADJUSTED
 HV6366* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6366  ______________________________________________________________________
 HV6366  GEOID HEIGHT    -        -33.487 (meters)                     GEOID18
 HV6366  LAPLACE CORR    -         -3.38  (seconds)                    DEFLEC18
 HV6366  HORZ ORDER      -  THIRD
 HV6366
 HV6366.The horizontal coordinates were established by classical geodetic methods
 HV6366.and adjusted by the National Geodetic Survey in January 1992.
 HV6366
 HV6366.The orthometric height was scaled from a topographic map.
 HV6366
 HV6366.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6366.GEOID18 height accuracy estimate available here.
 HV6366
 HV6366.Click photographs - Photos may exist for this station.
 HV6366
 HV6366.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6366
 HV6366. The following values were computed from the NAD 83(1991) position.
 HV6366
 HV6366;                    North         East     Units Scale Factor Converg.
 HV6366;SPC MD       -   135,600.034   444,321.504   MT  0.99994987   +0 19 14.3
 HV6366;SPC MD       -   444,881.11  1,457,744.80   sFT  0.99994987   +0 19 14.3
 HV6366;UTM  18      - 4,305,304.603   370,844.783   MT  0.99980541   -0 56 06.0
 HV6366
 HV6366!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6366!SPC MD       -   1.00000529  x   0.99994987  =   0.99995516
 HV6366!UTM  18      -   1.00000529  x   0.99980541  =   0.99981070
 HV6366
 HV6366:                Primary Azimuth Mark                     Grid Az
 HV6366:SPC MD       -  THOMAS PT SHOAL LH                       073 46 34.4
 HV6366:UTM  18      -  THOMAS PT SHOAL LH                       075 01 54.7
 HV6366
 HV6366_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7084405304(NAD 83)
 HV6366
 HV6366|---------------------------------------------------------------------|
 HV6366| PID    Reference Object                     Distance      Geod. Az  |
 HV6366|                                                           dddmmss.s |
 HV6366| HV6367 GOWAN 3                               8.266 METERS 05458     |
 HV6366| HV6305 THOMAS PT SHOAL LH                  APPROX. 4.8 KM 0740548.7 |
 HV6366| CX2806 GOWAN RM                             11.320 METERS 25420     |
 HV6366|---------------------------------------------------------------------|
 HV6366
 HV6366                          SUPERSEDED SURVEY CONTROL
 HV6366
 HV6366  NAD 83(1986)-  38 53 13.64473(N)    076 29 20.92601(W) AD(       ) 3
 HV6366  NAD 27      -  38 53 13.23600(N)    076 29 22.07000(W) AD(       ) 3
 HV6366  USSD        -  38 53 13.61000(N)    076 29 21.90000(W) AD(       ) 3
 HV6366
 HV6366.Superseded values are not recommended for survey control.
 HV6366
 HV6366.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6366.See file dsdata.pdf to determine how the superseded data were derived.
 HV6366
 HV6366_MARKER: N = NAIL
 HV6366_SETTING: 0 = UNSPECIFIED SETTING
 HV6366
 HV6366  HISTORY     - Date     Condition        Report By
 HV6366  HISTORY     - 1906     MONUMENTED       MDSFC
 HV6366  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6366
 HV6366                          STATION DESCRIPTION
 HV6366
 HV6366'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV6366'ON THE WESTERN SHORE OF CHESAPEAKE BAY, ON SAUNDERS POINT, BETWEEN
 HV6366'ENTRANCES TO SOUTH AND WEST RIVERS, 21 FEET BACK FROM EDGE OF BLUFF
 HV6366'25 FEET HIGH.  TWO BLAZED CEDAR TREES STAND ABOUT 12 YARDS S OF
 HV6366'STATION.  STATION MARKED BY NAIL IN STUB WITH TOP FLUSH WITH
 HV6366'GROUND.  REFERENCE MARK IS CENTER OF STANDARD CEMENT MONUMENT OF
 HV6366'MARYLAND SHELL FISH SURVEY.  IT IS 11.32 METERS (37.1 FEET) FROM
 HV6366'STATION S 74 DEG 20 MIN W.  DISTANCES AND BEARINGS FROM
 HV6366'THE STATION TO OTHER POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN
 HV6366'BLAZE IN 10-INCH CEDAR TREE, 13.02 METERS (42.7 FEET), S 3
 HV6366'DEG 13 MIN E.  NAIL IN BLAZE IN 12-INCH CEDAR TREE, 9.44 METERS
 HV6366'(30.97 FEET), S 23 DEG 49 MIN W.  PEAK OF WHITE HOUSE, 1/4 MILE, S 65
 HV6366'DEG 14 MIN W.  S CHIMNEY OF HOUSE, 100 YARDS, N 45 DEG 42 MIN W.
 HV6366
 HV6366                          STATION RECOVERY (1932)
 HV6366
 HV6366'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6366'STATION AND REFERENCE MONUMENTS ARE LOST.
 HV6366'
 HV6366'THE BLUFF HAS ERODED BACK OF THE LOCATION OF BOTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6367 ***********************************************************************
 HV6367  DESIGNATION -  GOWAN 3
 HV6367  PID         -  HV6367
 HV6367  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6367  COUNTRY     -  US
 HV6367  USGS QUAD   -  ANNAPOLIS (2016)
 HV6367
 HV6367                         *CURRENT SURVEY CONTROL
 HV6367  ______________________________________________________________________
 HV6367* NAD 83(1991) POSITION- 38 53 13.80211(N) 076 29 20.63284(W)   ADJUSTED
 HV6367* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6367  ______________________________________________________________________
 HV6367  GEOID HEIGHT    -        -33.487 (meters)                     GEOID18
 HV6367  LAPLACE CORR    -         -3.38  (seconds)                    DEFLEC18
 HV6367  HORZ ORDER      -  THIRD
 HV6367
 HV6367.The horizontal coordinates were established by classical geodetic methods
 HV6367.and adjusted by the National Geodetic Survey in January 1992.
 HV6367
 HV6367.The orthometric height was scaled from a topographic map.
 HV6367
 HV6367.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6367.GEOID18 height accuracy estimate available here.
 HV6367
 HV6367.Click photographs - Photos may exist for this station.
 HV6367
 HV6367.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6367
 HV6367. The following values were computed from the NAD 83(1991) position.
 HV6367
 HV6367;                    North         East     Units Scale Factor Converg.
 HV6367;SPC MD       -   135,604.817   444,328.246   MT  0.99994987   +0 19 14.4
 HV6367;SPC MD       -   444,896.80  1,457,766.92   sFT  0.99994987   +0 19 14.4
 HV6367;UTM  18      - 4,305,309.235   370,851.627   MT  0.99980539   -0 56 05.8
 HV6367
 HV6367!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6367!SPC MD       -   1.00000529  x   0.99994987  =   0.99995516
 HV6367!UTM  18      -   1.00000529  x   0.99980539  =   0.99981068
 HV6367
 HV6367:                Primary Azimuth Mark                     Grid Az
 HV6367:SPC MD       -  PRICE 2                                  076 46 22.3
 HV6367:UTM  18      -  PRICE 2                                  078 01 42.5
 HV6367
 HV6367_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7085105309(NAD 83)
 HV6367
 HV6367|---------------------------------------------------------------------|
 HV6367| PID    Reference Object                     Distance      Geod. Az  |
 HV6367|                                                           dddmmss.s |
 HV6367| HV6163 PRICE 2                             APPROX.11.0 KM 0770536.7 |
 HV6367|---------------------------------------------------------------------|
 HV6367
 HV6367                          SUPERSEDED SURVEY CONTROL
 HV6367
 HV6367  NAD 83(1986)-  38 53 13.79883(N)    076 29 20.64475(W) AD(       ) 3
 HV6367  NAD 27      -  38 53 13.39000(N)    076 29 21.78800(W) AD(       ) 3
 HV6367  USSD        -  38 53 13.76600(N)    076 29 21.61500(W) AD(       ) 3
 HV6367
 HV6367.Superseded values are not recommended for survey control.
 HV6367
 HV6367.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6367.See file dsdata.pdf to determine how the superseded data were derived.
 HV6367
 HV6367_MARK LOGO: CGS
 HV6367
 HV6367  HISTORY     - Date     Condition        Report By
 HV6367  HISTORY     - 1899     MONUMENTED       CGS
 HV6367  HISTORY     - 1906     SEE DESCRIPTION  CGS
 HV6367  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6367
 HV6367                          STATION DESCRIPTION
 HV6367
 HV6367'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 HV6367'ON THE WESTERN SHORE OF CHESAPEAKE BAY, ON SAUNDERS POINT, BETWEEN
 HV6367'ENTRANCES TO SOUTH AND WEST RIVERS, IN THE SE CORNER OF JOHN
 HV6367'BEARDS ORCHARD, 21.6 FEET FROM EDGE OF BLUFF ABOUT 30 FEET ABOVE
 HV6367'HIGH-WATER MARK AND 7 FEET FROM N FENCE OF ORCHARD.  DISTANCES
 HV6367'AND BEARINGS TO TREES IN THE ORCHARD MARKED WITH BLAZED
 HV6367'TRIANGLES WERE AS FOLLOWS--APPLE TREE, 56.1 FEET, S 44 DEG 45
 HV6367'MIN W.  APPLE TREE, 31.55 FEET, S 64 DEG 30 MIN W.  APPLE TREE,
 HV6367'45.25 FEET N 48 DEG W.  THE STATION WAS MARKED UNDERGROUND BY A
 HV6367'BOTTLE 3 FEET BELOW THE SURFACE AND ANOTHER BOTTLE (WITH SCREW
 HV6367'TOP) 1 FOOT BELOW THE SURFACE.  IN 1906 THE STATION WAS FOUND SO
 HV6367'CLOSE TO THE BLUFF THAT ANOTHER STATION WAS PUT IN NEARBY AND
 HV6367'CALLED GOWAN 1906.
 HV6367
 HV6367                          STATION RECOVERY (1932)
 HV6367
 HV6367'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6367'STATION IS LOST.  THE BLUFF HAS ERODED AWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DE9122 ***********************************************************************
 DE9122  DESIGNATION -  GP 1
 DE9122  PID         -  DE9122
 DE9122  STATE/COUNTY-  MD/SOMERSET
 DE9122  COUNTRY     -  US
 DE9122  USGS QUAD   -  MARION (2016)
 DE9122
 DE9122                         *CURRENT SURVEY CONTROL
 DE9122  ______________________________________________________________________
 DE9122* NAD 83(1986) POSITION- 38 01 02.2    (N) 075 49 30.6    (W)   HD_HELD2
 DE9122* NAVD 88 ORTHO HEIGHT -     0.984 (meters)        3.23  (feet) ADJUSTED
 DE9122  ______________________________________________________________________
 DE9122  GEOID HEIGHT    -        -36.072 (meters)                     GEOID18
 DE9122  DYNAMIC HEIGHT  -          0.983 (meters)        3.23  (feet) COMP
 DE9122  MODELED GRAVITY -    979,975.4   (mgal)                       NAVD 88
 DE9122
 DE9122  VERT ORDER      -  SECOND    CLASS I
 DE9122
 DE9122.The horizontal coordinates were established by autonomous hand held GPS
 DE9122.observations and have an estimated accuracy of +/- 10 meters.
 DE9122
 DE9122.The orthometric height was determined by differential leveling and
 DE9122.adjusted by the NATIONAL GEODETIC SURVEY
 DE9122.in February 2003.
 DE9122
 DE9122.Significant digits in the geoid height do not necessarily reflect accuracy.
 DE9122.GEOID18 height accuracy estimate available here.
 DE9122
 DE9122.Click photographs - Photos may exist for this station.
 DE9122
 DE9122.The dynamic height is computed by dividing the NAVD 88
 DE9122.geopotential number by the normal gravity value computed on the
 DE9122.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DE9122.degrees latitude (g = 980.6199 gals.).
 DE9122
 DE9122.The modeled gravity was interpolated from observed gravity values.
 DE9122
 DE9122;                    North         East    Units  Estimated Accuracy
 DE9122;SPC MD       -    39,584.      503,168.      MT  (+/- 10 meters HH2 GPS)
 DE9122
 DE9122_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2756808053(NAD 83)
 DE9122
 DE9122                          SUPERSEDED SURVEY CONTROL
 DE9122
 DE9122.No superseded survey control is available for this station.
 DE9122
 DE9122_MARKER: DD = SURVEY DISK
 DE9122_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DE9122_STAMPING: GP 1
 DE9122_MARK LOGO: NONE
 DE9122_MAGNETIC: N = NO MAGNETIC MATERIAL
 DE9122_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DE9122+STABILITY: SURFACE MOTION
 DE9122_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DE9122+SATELLITE: SATELLITE OBSERVATIONS - October 26, 2005
 DE9122
 DE9122  HISTORY     - Date     Condition        Report By
 DE9122  HISTORY     - UNK      MONUMENTED       NONE
 DE9122  HISTORY     - 20021028 GOOD             NGS
 DE9122  HISTORY     - 20051026 GOOD             NGS
 DE9122
 DE9122                          STATION DESCRIPTION
 DE9122
 DE9122'DESCRIBED BY NATIONAL GEODETIC SURVEY 2002 (DBC)
 DE9122'TO REACH THE STATION FROM THE INTERSECTIONS OF MARYLAND
 DE9122'AVENUE/RICHARDSON AVENUE (US HIGHWAY 413) SOMERSET AVENUE AND
 DE9122'JACKSONVILLE ROAD NEAR THE CITY WATER TANK IN CRISFIELD.  GO 1.95
 DE9122'MILES (3.14 KM) NORTHEASTERLY ALONG JACKSONVILLE ROAD TO THE JUNCTION
 DE9122'OF CHARLES BRIDDELL DRIVE/AVIATORS WAY (ENTRANCE ROAD TO THE
 DE9122'CRISFIELD-SOMERSET COUNTY AIRPORT) ON THE LEFT, TURN LEFT NORTHERLY ON
 DE9122'THE AIRPORT ENTRANCE ROAD FOR 0.25 MILES (0.40 KM) TO THE AIRPORT
 DE9122'TERMINAL STRAIGHT AHEAD AND THE FUEL FARM ON THE LEFT, BEAR LEFT THEN
 DE9122'RIGHT AROUND THE FUEL FARM TO THE FRONT OF THE TERMINAL BUILDING TO
 DE9122'THE JUNCTION OF A TAXIWAY LEADING NORTHEAST TO THE RUNWAY, GO EASTERLY
 DE9122'ACROSS THE TARMAC TO THE THIRD PAINTED TIE DOWN AREA AND CONTINUE
 DE9122'AHEAD EASTERLY ON THE GRASSY MEDIUM FOR ABOUT 50.0 FEET (15.2 M) TO
 DE9122'THE STATION FLUSH WITH THE GROUND.  THE STATION IS A PRIVATE ALUMINUM
 DE9122'SURVEY DISK SET IN THE TOP OF A 12 INCH CONCRETE POST.  LOCATED 82.4
 DE9122'FEET (25.1 M) SOUTH OF THE SOUTH LEG OF THE SOUTHWEST ONE OF TWO VASI
 DE9122'LIGHTS, 76.0 FEET (23.2 M) NORTH OF THE METAL BASE OF THE WINDSOCK,
 DE9122'40.5 FEET (12.3 M) NORTHEAST OF THE NORTHEAST EDGE OF THE ASPHALT TIE
 DE9122'DOWN AREA, 1.2 FEET (0.4 M) SOUTHEAST OF A FIBERGLASS WITNESS POST,
 DE9122'AND 1.2 FEET (0.4 M) WEST OF A FIBERGLASS WITNESS POST.
 DE9122
 DE9122                          STATION RECOVERY (2005)
 DE9122
 DE9122'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (DBC)
 DE9122'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5607 ***********************************************************************
 AB5607  DESIGNATION -  GPS 001
 AB5607  PID         -  AB5607
 AB5607  STATE/COUNTY-  MD/TALBOT
 AB5607  COUNTRY     -  US
 AB5607  USGS QUAD   -  EASTON (2016)
 AB5607
 AB5607                         *CURRENT SURVEY CONTROL
 AB5607  ______________________________________________________________________
 AB5607* NAD 83(2011) POSITION- 38 50 01.91666(N) 076 04 30.40943(W)   ADJUSTED
 AB5607* NAD 83(2011) ELLIP HT-   -18.247 (meters)        (06/27/12)   ADJUSTED
 AB5607* NAD 83(2011) EPOCH   -  2010.00
 AB5607* NAVD 88 ORTHO HEIGHT -    16.298 (meters)       53.47  (feet) ADJUSTED
 AB5607  ______________________________________________________________________
 AB5607  GEOID HEIGHT    -        -34.539 (meters)                     GEOID18
 AB5607  NAD 83(2011) X  -  1,197,207.697 (meters)                     COMP
 AB5607  NAD 83(2011) Y  - -4,828,696.922 (meters)                     COMP
 AB5607  NAD 83(2011) Z  -  3,977,955.706 (meters)                     COMP
 AB5607  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 AB5607  DYNAMIC HEIGHT  -         16.288 (meters)       53.44  (feet) COMP
 AB5607  MODELED GRAVITY -    980,043.4   (mgal)                       NAVD 88
 AB5607
 AB5607  VERT ORDER      -  SECOND    CLASS I
 AB5607
 AB5607  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5607  Standards:
 AB5607         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5607            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5607  -------------------------------------------------------------------
 AB5607  NETWORK    0.46   0.94           0.19   0.18   0.48     -0.26231845
 AB5607  -------------------------------------------------------------------
 AB5607  Click here for local accuracies and other accuracy information.
 AB5607
 AB5607.The horizontal coordinates were established by GPS observations
 AB5607.and adjusted by the National Geodetic Survey in June 2012.
 AB5607
 AB5607.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5607.been affixed to the stable North American tectonic plate. See 
 AB5607.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5607
 AB5607.The horizontal coordinates are valid at the epoch date displayed above
 AB5607.which is a decimal equivalence of Year/Month/Day.
 AB5607
 AB5607.The orthometric height was determined by differential leveling and
 AB5607.adjusted by the NATIONAL GEODETIC SURVEY
 AB5607.in September 2004.
 AB5607
 AB5607.No vertical observational check was made to the station.
 AB5607
 AB5607.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5607.GEOID18 height accuracy estimate available here.
 AB5607
 AB5607.Click photographs - Photos may exist for this station.
 AB5607
 AB5607.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5607
 AB5607.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5607
 AB5607.The ellipsoidal height was determined by GPS observations
 AB5607.and is referenced to NAD 83.
 AB5607
 AB5607.The dynamic height is computed by dividing the NAVD 88
 AB5607.geopotential number by the normal gravity value computed on the
 AB5607.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5607.degrees latitude (g = 980.6199 gals.).
 AB5607
 AB5607.The modeled gravity was interpolated from observed gravity values.
 AB5607
 AB5607. The following values were computed from the NAD 83(2011) position.
 AB5607
 AB5607;                    North         East     Units Scale Factor Converg.
 AB5607;SPC MD       -   129,970.698   480,301.215   MT  0.99995011   +0 34 49.8
 AB5607;SPC MD       -   426,412.20  1,575,788.24   sFT  0.99995011   +0 34 49.8
 AB5607;UTM  18      - 4,298,889.773   406,685.520   MT  0.99970722   -0 40 27.2
 AB5607
 AB5607!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5607!SPC MD       -   1.00000286  x   0.99995011  =   0.99995297
 AB5607!UTM  18      -   1.00000286  x   0.99970722  =   0.99971008
 AB5607
 AB5607:                Primary Azimuth Mark                     Grid Az
 AB5607:SPC MD       -  GPS 048                                  094 29 06.8
 AB5607:UTM  18      -  GPS 048                                  095 44 23.8
 AB5607
 AB5607_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0668598889(NAD 83)
 AB5607
 AB5607|---------------------------------------------------------------------|
 AB5607| PID    Reference Object                     Distance      Geod. Az  |
 AB5607|                                                           dddmmss.s |
 AB5607| AB5654 GPS 048                             APPROX. 1.3 KM 0950356.6 |
 AB5607| AB5608 GPS 002                             475.751 METERS 1475743.7 |
 AB5607|---------------------------------------------------------------------|
 AB5607
 AB5607                          SUPERSEDED SURVEY CONTROL
 AB5607
 AB5607  NAD 83(2007)-  38 50 01.91692(N)    076 04 30.41017(W) AD(2002.00) 0
 AB5607  ELLIP H (02/10/07)  -18.215  (m)                       GP(2002.00)    
 AB5607  ELLIP H (08/30/02)  -18.212  (m)                       GP(       ) 4 2
 AB5607  NAD 83(1991)-  38 50 01.91725(N)    076 04 30.41066(W) AD(       ) 1
 AB5607  ELLIP H (08/02/96)  -18.182  (m)                       GP(       ) 3 1
 AB5607  NAVD 88 (08/02/96)   16.3    (m)  GEOID93  model used  GPS OBS        
 AB5607
 AB5607.Superseded values are not recommended for survey control.
 AB5607
 AB5607.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5607.See file dsdata.pdf to determine how the superseded data were derived.
 AB5607
 AB5607_MARKER: DD = SURVEY DISK
 AB5607_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5607_STAMPING: NO. GPS-001
 AB5607_MARK LOGO: MD0480
 AB5607_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5607_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5607+STABILITY: SURFACE MOTION
 AB5607_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5607+SATELLITE: SATELLITE OBSERVATIONS - July 15, 2012
 AB5607
 AB5607  HISTORY     - Date     Condition        Report By
 AB5607  HISTORY     - 1995     MONUMENTED       EASTUT
 AB5607  HISTORY     - 20000726 GOOD             MDSHA
 AB5607  HISTORY     - 20020310 GOOD             USPSQD
 AB5607  HISTORY     - 20120715 GOOD             GEOCAC
 AB5607
 AB5607                          STATION DESCRIPTION
 AB5607
 AB5607'DESCRIBED BY EASTON UTILITIES 1995 (BKS)
 AB5607'THE STATION IS LOCATED ABOUT 4 MI (6.4 KM) FROM THE CENTER OF EASTON.
 AB5607'
 AB5607'TO REACH THE STATION FROM THE INTERSECTION OF ROUTE 50 AND ROUTE 662
 AB5607'(OLD WYE MILLS ROAD) ABOUT 5 MI (8.0 KM) NORTH OF EASTON, GO SOUTH ON
 AB5607'ROUTE 662 FOR 3.10 MI (4.99 KM) TO THE STATION ON THE RIGHT.  IT IS
 AB5607'ALSO LOCATED 0.35 MI (0.56 KM) NORTH OF THE INTERSECTION OF RT 662 AND
 AB5607'HAILEM SCHOOL ROAD.
 AB5607'
 AB5607'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER
 AB5607'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.  IT IS 100.9 FT (30.8 M)
 AB5607'SOUTHEAST OF TELEPHONE POLE NO. 1189, 73.0 FT (22.3 M) NORTHWEST OF
 AB5607'TELEPHONE POLE NO. 1190 AND 20.6 FT (6.3 M) SOUTHWEST OF THE
 AB5607'CENTERLINE OF THE ROAD.
 AB5607
 AB5607                          STATION RECOVERY (2000)
 AB5607
 AB5607'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5607'RECOVERED AS DESCRIBED.
 AB5607
 AB5607                          STATION RECOVERY (2002)
 AB5607
 AB5607'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5607'RECOVERED IN GOOD CONDITION.
 AB5607
 AB5607                          STATION RECOVERY (2012)
 AB5607
 AB5607'RECOVERY NOTE BY GEOCACHING 2012 (MFM)
 AB5607'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5608 ***********************************************************************
 AB5608  DESIGNATION -  GPS 002
 AB5608  PID         -  AB5608
 AB5608  STATE/COUNTY-  MD/TALBOT
 AB5608  COUNTRY     -  US
 AB5608  USGS QUAD   -  EASTON (2016)
 AB5608
 AB5608                         *CURRENT SURVEY CONTROL
 AB5608  ______________________________________________________________________
 AB5608* NAD 83(2011) POSITION- 38 49 48.83821(N) 076 04 19.94620(W)   ADJUSTED
 AB5608* NAD 83(2011) ELLIP HT-   -18.758 (meters)        (06/27/12)   ADJUSTED
 AB5608* NAD 83(2011) EPOCH   -  2010.00
 AB5608* NAVD 88 ORTHO HEIGHT -    15.816 (meters)       51.89  (feet) ADJUSTED
 AB5608  ______________________________________________________________________
 AB5608  GEOID HEIGHT    -        -34.553 (meters)                     GEOID18
 AB5608  NAD 83(2011) X  -  1,197,513.414 (meters)                     COMP
 AB5608  NAD 83(2011) Y  - -4,828,881.246 (meters)                     COMP
 AB5608  NAD 83(2011) Z  -  3,977,641.223 (meters)                     COMP
 AB5608  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 AB5608  DYNAMIC HEIGHT  -         15.806 (meters)       51.86  (feet) COMP
 AB5608  MODELED GRAVITY -    980,042.8   (mgal)                       NAVD 88
 AB5608
 AB5608  VERT ORDER      -  SECOND    CLASS I
 AB5608
 AB5608  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5608  Standards:
 AB5608         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5608            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5608  -------------------------------------------------------------------
 AB5608  NETWORK    0.47   0.88           0.19   0.19   0.45     -0.16893984
 AB5608  -------------------------------------------------------------------
 AB5608  Click here for local accuracies and other accuracy information.
 AB5608
 AB5608.The horizontal coordinates were established by GPS observations
 AB5608.and adjusted by the National Geodetic Survey in June 2012.
 AB5608
 AB5608.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5608.been affixed to the stable North American tectonic plate. See 
 AB5608.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5608
 AB5608.The horizontal coordinates are valid at the epoch date displayed above
 AB5608.which is a decimal equivalence of Year/Month/Day.
 AB5608
 AB5608.The orthometric height was determined by differential leveling and
 AB5608.adjusted by the NATIONAL GEODETIC SURVEY
 AB5608.in September 2004.
 AB5608
 AB5608.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5608.GEOID18 height accuracy estimate available here.
 AB5608
 AB5608.Click photographs - Photos may exist for this station.
 AB5608
 AB5608.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5608
 AB5608.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5608
 AB5608.The ellipsoidal height was determined by GPS observations
 AB5608.and is referenced to NAD 83.
 AB5608
 AB5608.The dynamic height is computed by dividing the NAVD 88
 AB5608.geopotential number by the normal gravity value computed on the
 AB5608.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5608.degrees latitude (g = 980.6199 gals.).
 AB5608
 AB5608.The modeled gravity was interpolated from observed gravity values.
 AB5608
 AB5608. The following values were computed from the NAD 83(2011) position.
 AB5608
 AB5608;                    North         East     Units Scale Factor Converg.
 AB5608;SPC MD       -   129,570.003   480,557.651   MT  0.99995016   +0 34 56.3
 AB5608;SPC MD       -   425,097.58  1,576,629.56   sFT  0.99995016   +0 34 56.3
 AB5608;UTM  18      - 4,298,483.657   406,933.061   MT  0.99970666   -0 40 20.4
 AB5608
 AB5608!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5608!SPC MD       -   1.00000294  x   0.99995016  =   0.99995310
 AB5608!UTM  18      -   1.00000294  x   0.99970666  =   0.99970960
 AB5608
 AB5608:                Primary Azimuth Mark                     Grid Az
 AB5608:SPC MD       -  GPS 048                                  073 15 51.7
 AB5608:UTM  18      -  GPS 048                                  074 31 08.4
 AB5608
 AB5608_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0693398483(NAD 83)
 AB5608
 AB5608|---------------------------------------------------------------------|
 AB5608| PID    Reference Object                     Distance      Geod. Az  |
 AB5608|                                                           dddmmss.s |
 AB5608| AB5654 GPS 048                             APPROX. 1.0 KM 0735048.0 |
 AB5608|---------------------------------------------------------------------|
 AB5608
 AB5608                          SUPERSEDED SURVEY CONTROL
 AB5608
 AB5608  NAD 83(2007)-  38 49 48.83846(N)    076 04 19.94693(W) AD(2002.00) 0
 AB5608  ELLIP H (02/10/07)  -18.726  (m)                       GP(2002.00)    
 AB5608  ELLIP H (08/30/02)  -18.724  (m)                       GP(       ) 4 2
 AB5608  NAD 83(1991)-  38 49 48.83877(N)    076 04 19.94758(W) AD(       ) 1
 AB5608  ELLIP H (08/02/96)  -18.690  (m)                       GP(       ) 3 1
 AB5608  NAVD 88 (08/02/96)   15.8    (m)  GEOID93  model used  GPS OBS        
 AB5608
 AB5608.Superseded values are not recommended for survey control.
 AB5608
 AB5608.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5608.See file dsdata.pdf to determine how the superseded data were derived.
 AB5608
 AB5608_MARKER: DD = SURVEY DISK
 AB5608_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5608_STAMPING: NO. GPS 002
 AB5608_MARK LOGO: MD0480
 AB5608_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5608_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5608+STABILITY: SURFACE MOTION
 AB5608_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5608+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5608
 AB5608  HISTORY     - Date     Condition        Report By
 AB5608  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5608  HISTORY     - 20000726 GOOD             MDSHA
 AB5608  HISTORY     - 20020310 GOOD             USPSQD
 AB5608
 AB5608                          STATION DESCRIPTION
 AB5608
 AB5608'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5608'THE STATION IS LOCATED 4.0 MI (6.4 KM) FROM THE CENTER OF EASTON.
 AB5608'
 AB5608'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 662 (OLD WYE
 AB5608'MILLS-EASTON RD) ABOUT 5.0 MI (8.0 KM) NORTH OF EASTON, GO SOUTH ON RT
 AB5608'662 FOR 3.4 MI (5.5 KM) TO THE STATION ON THE RIGHT AT A TELEPHONE
 AB5608'TRANSFORMER BUILDING.  STATION IS ALSO 0.05 MI (0.08 KM) NORTH OF THE
 AB5608'INTERSECTION OF RT 662 AND HAILEM SCHOOL ROAD.
 AB5608'
 AB5608'IT IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 AB5608'WITH THE GROUND, 94.45 FT (28.79 M) SOUTH OF TELEPHONE POLE NO.1197,
 AB5608'21.20 FT (6.46 M) WEST OF THE CENTERLINE OF THE ROAD, 23.65 FT (7.21
 AB5608'M) NORTH OF TELEPHONE POLE NO. 1197.5 AND 10.8 FT (3.3 M) NORTH OF THE
 AB5608'CENTERLINE OF THE LANE LEADING TO THE BUILDING.
 AB5608
 AB5608                          STATION RECOVERY (2000)
 AB5608
 AB5608'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5608'RECOVERED AS DESCRIBED.
 AB5608
 AB5608                          STATION RECOVERY (2002)
 AB5608
 AB5608'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5608'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5609 ***********************************************************************
 AB5609  DESIGNATION -  GPS 003
 AB5609  PID         -  AB5609
 AB5609  STATE/COUNTY-  MD/TALBOT
 AB5609  COUNTRY     -  US
 AB5609  USGS QUAD   -  EASTON (2016)
 AB5609
 AB5609                         *CURRENT SURVEY CONTROL
 AB5609  ______________________________________________________________________
 AB5609* NAD 83(2011) POSITION- 38 49 24.12391(N) 076 07 01.50153(W)   ADJUSTED
 AB5609* NAD 83(2011) ELLIP HT-   -30.582 (meters)        (06/27/12)   ADJUSTED
 AB5609* NAD 83(2011) EPOCH   -  2010.00
 AB5609* NAVD 88 ORTHO HEIGHT -     3.9   (meters)       13.    (feet) GPS OBS
 AB5609  ______________________________________________________________________
 AB5609  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5609  GEOID HEIGHT    -        -34.830 (meters)                     GEOID93
 AB5609  GEOID HEIGHT    -        -34.485 (meters)                     GEOID18
 AB5609  NAD 83(2011) X  -  1,193,843.299 (meters)                     COMP
 AB5609  NAD 83(2011) Y  - -4,830,272.624 (meters)                     COMP
 AB5609  NAD 83(2011) Z  -  3,977,040.096 (meters)                     COMP
 AB5609  LAPLACE CORR    -         -3.86  (seconds)                    DEFLEC18
 AB5609
 AB5609  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5609  Standards:
 AB5609         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5609            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5609  -------------------------------------------------------------------
 AB5609  NETWORK    0.47   1.14           0.20   0.18   0.58     -0.21836695
 AB5609  -------------------------------------------------------------------
 AB5609  Click here for local accuracies and other accuracy information.
 AB5609
 AB5609.The horizontal coordinates were established by GPS observations
 AB5609.and adjusted by the National Geodetic Survey in June 2012.
 AB5609
 AB5609.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5609.been affixed to the stable North American tectonic plate. See 
 AB5609.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5609
 AB5609.The horizontal coordinates are valid at the epoch date displayed above
 AB5609.which is a decimal equivalence of Year/Month/Day.
 AB5609
 AB5609.The orthometric height was determined by GPS observations and a
 AB5609.high-resolution geoid model.
 AB5609
 AB5609.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5609.GEOID18 height accuracy estimate available here.
 AB5609
 AB5609.Click photographs - Photos may exist for this station.
 AB5609
 AB5609.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5609
 AB5609.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5609
 AB5609.The ellipsoidal height was determined by GPS observations
 AB5609.and is referenced to NAD 83.
 AB5609
 AB5609. The following values were computed from the NAD 83(2011) position.
 AB5609
 AB5609;                    North         East     Units Scale Factor Converg.
 AB5609;SPC MD       -   128,769.325   476,668.646   MT  0.99995026   +0 33 14.9
 AB5609;SPC MD       -   422,470.69  1,563,870.38   sFT  0.99995026   +0 33 14.9
 AB5609;UTM  18      - 4,297,768.492   403,028.391   MT  0.99971579   -0 42 01.4
 AB5609
 AB5609!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5609!SPC MD       -   1.00000480  x   0.99995026  =   0.99995506
 AB5609!UTM  18      -   1.00000480  x   0.99971579  =   0.99972059
 AB5609
 AB5609_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0302897768(NAD 83)
 AB5609
 AB5609|---------------------------------------------------------------------|
 AB5609| PID    Reference Object                     Distance      Geod. Az  |
 AB5609|                                                           dddmmss.s |
 AB5609| AB5610 GPS 004                             356.687 METERS 11013     |
 AB5609|---------------------------------------------------------------------|
 AB5609
 AB5609                          SUPERSEDED SURVEY CONTROL
 AB5609
 AB5609  NAD 83(2007)-  38 49 24.12419(N)    076 07 01.50228(W) AD(2002.00) 0
 AB5609  ELLIP H (02/10/07)  -30.550  (m)                       GP(2002.00)    
 AB5609  ELLIP H (08/30/02)  -30.539  (m)                       GP(       ) 4 2
 AB5609  NAD 83(1991)-  38 49 24.12447(N)    076 07 01.50278(W) AD(       ) 1
 AB5609  ELLIP H (08/02/96)  -30.517  (m)                       GP(       ) 3 1
 AB5609
 AB5609.Superseded values are not recommended for survey control.
 AB5609
 AB5609.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5609.See file dsdata.pdf to determine how the superseded data were derived.
 AB5609
 AB5609_MARKER: DD = SURVEY DISK
 AB5609_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5609_STAMPING: NO.GPS 003
 AB5609_MARK LOGO: MD0480
 AB5609_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5609_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5609+STABILITY: SURFACE MOTION
 AB5609_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5609+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5609
 AB5609  HISTORY     - Date     Condition        Report By
 AB5609  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5609  HISTORY     - 20020310 GOOD             USPSQD
 AB5609
 AB5609                          STATION DESCRIPTION
 AB5609
 AB5609'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5609'THE STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) NORTHWEST OF THE CENTER
 AB5609'OF EASTON.
 AB5609'
 AB5609'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 662 (OLD WYE MILLS RD),
 AB5609'GO SOUTH ON RT 662 FOR 3.45 MI (5.55 KM) TO THE INTERSECTION WITH
 AB5609'HAILEM SCHOOL ROAD.  TURN RIGHT AND GO SOUTH ON HAILEM SCHOOL ROAD FOR
 AB5609'0.9 MI (1.4 KM) TO THE INTERSECTION WITH GOLDBOROUGH NECK ROAD.  TURN
 AB5609'RIGHT AND GO NORTH AND WEST ON GOLDSBOROUGH NECK ROAD FOR 2.3 MI
 AB5609'(3.7 KM) TO THE END OF THE PUBLIC ROAD AND THE STATION STRAIGHT AHEAD.
 AB5609'
 AB5609'IT IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 AB5609'WITH THE GROUND ON THE TOP OF A BANK, 21.0 FT (6.4 M) NORTHWEST OF A
 AB5609'ROAD SIGN, 14.5 FT (4.4 M) NORTHWEST OF THE NORTH END OF A METAL
 AB5609'CULVERT PIPE UNDER A PRIVATE GRAVEL DRIVE, 23.8 FT (7.3 M) NORTH OF
 AB5609'THE CENTERLINE OF THE DRIVE AND 10.4 FT (3.2 M) SOUTHEAST OF TELEPHONE
 AB5609'PEDESTAL NO. 73.
 AB5609
 AB5609                          STATION RECOVERY (2002)
 AB5609
 AB5609'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5609'REMAINS OF A SREDDED CARSONITE POST FOUND IN THE VICINITY. REFERENCED
 AB5609'END OF PUBLIC ROAD IS NOW EAGLE DRIVE AT THE W END OF A PAVED TURN
 AB5609'AROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB9762 ***********************************************************************
 AB9762  DESIGNATION -  GPS 003
 AB9762  PID         -  AB9762
 AB9762  STATE/COUNTY-  MD/PRINCE GEORGES
 AB9762  COUNTRY     -  US
 AB9762  USGS QUAD   -  LANHAM (2016)
 AB9762
 AB9762                         *CURRENT SURVEY CONTROL
 AB9762  ______________________________________________________________________
 AB9762* NAD 83(2011) POSITION- 38 59 31.65847(N) 076 51 35.23005(W)   ADJUSTED
 AB9762* NAD 83(2011) ELLIP HT-    31.650 (meters)        (06/27/12)   ADJUSTED
 AB9762* NAD 83(2011) EPOCH   -  2010.00
 AB9762* NAVD 88 ORTHO HEIGHT -    63.958 (meters)      209.84  (feet) ADJUSTED
 AB9762  ______________________________________________________________________
 AB9762  GEOID HEIGHT    -        -32.320 (meters)                     GEOID18
 AB9762  NAD 83(2011) X  -  1,128,467.899 (meters)                     COMP
 AB9762  NAD 83(2011) Y  - -4,833,930.321 (meters)                     COMP
 AB9762  NAD 83(2011) Z  -  3,991,657.685 (meters)                     COMP
 AB9762  LAPLACE CORR    -         -5.09  (seconds)                    DEFLEC18
 AB9762  DYNAMIC HEIGHT  -         63.923 (meters)      209.72  (feet) COMP
 AB9762  MODELED GRAVITY -    980,090.7   (mgal)                       NAVD 88
 AB9762
 AB9762  VERT ORDER      -  SECOND    CLASS II
 AB9762
 AB9762  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB9762  Standards:
 AB9762         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB9762            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB9762  -------------------------------------------------------------------
 AB9762  NETWORK    0.62   0.78           0.27   0.23   0.40     -0.08960788
 AB9762  -------------------------------------------------------------------
 AB9762  Click here for local accuracies and other accuracy information.
 AB9762
 AB9762.The horizontal coordinates were established by GPS observations
 AB9762.and adjusted by the National Geodetic Survey in June 2012.
 AB9762
 AB9762.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB9762.been affixed to the stable North American tectonic plate. See 
 AB9762.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB9762
 AB9762.The horizontal coordinates are valid at the epoch date displayed above
 AB9762.which is a decimal equivalence of Year/Month/Day.
 AB9762
 AB9762.The orthometric height was determined by differential leveling and
 AB9762.adjusted by the NATIONAL GEODETIC SURVEY
 AB9762.in September 1997.
 AB9762
 AB9762.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB9762.GEOID18 height accuracy estimate available here.
 AB9762
 AB9762.Click photographs - Photos may exist for this station.
 AB9762
 AB9762.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB9762
 AB9762.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB9762
 AB9762.The ellipsoidal height was determined by GPS observations
 AB9762.and is referenced to NAD 83.
 AB9762
 AB9762.The dynamic height is computed by dividing the NAVD 88
 AB9762.geopotential number by the normal gravity value computed on the
 AB9762.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB9762.degrees latitude (g = 980.6199 gals.).
 AB9762
 AB9762.The modeled gravity was interpolated from observed gravity values.
 AB9762
 AB9762. The following values were computed from the NAD 83(2011) position.
 AB9762
 AB9762;                    North         East     Units Scale Factor Converg.
 AB9762;SPC MD       -   147,141.593   412,146.981   MT  0.99995190   +0 05 16.8
 AB9762;SPC MD       -   482,747.04  1,352,185.55   sFT  0.99995190   +0 05 16.8
 AB9762;UTM  18      - 4,317,548.066   338,934.060   MT  0.99991945   -1 10 13.6
 AB9762
 AB9762!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB9762!SPC MD       -   0.99999503  x   0.99995190  =   0.99994693
 AB9762!UTM  18      -   0.99999503  x   0.99991945  =   0.99991448
 AB9762
 AB9762_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3893417548(NAD 83)
 AB9762
 AB9762                          SUPERSEDED SURVEY CONTROL
 AB9762
 AB9762  NAD 83(2007)-  38 59 31.65878(N)    076 51 35.23075(W) AD(2002.00) 0
 AB9762  ELLIP H (02/10/07)   31.665  (m)                       GP(2002.00)    
 AB9762  ELLIP H (08/30/02)   31.656  (m)                       GP(       ) 4 2
 AB9762  NAD 83(1991)-  38 59 31.65869(N)    076 51 35.23063(W) AD(       ) 1
 AB9762  ELLIP H (01/10/97)   31.722  (m)                       GP(       ) 4 1
 AB9762  NAVD 88 (01/10/97)   64.0    (m)  GEOID93  model used  GPS OBS        
 AB9762
 AB9762.Superseded values are not recommended for survey control.
 AB9762
 AB9762.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB9762.See file dsdata.pdf to determine how the superseded data were derived.
 AB9762
 AB9762_MARKER: A = ALUMINUM MARKER
 AB9762_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB9762_STAMPING: NASA-GSFC 220-FMD GPS-003 MARCH 1996
 AB9762_MARK LOGO: NASA
 AB9762_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB9762_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB9762+STABILITY: SURFACE MOTION
 AB9762_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB9762+SATELLITE: SATELLITE OBSERVATIONS - April 15, 1996
 AB9762
 AB9762  HISTORY     - Date     Condition        Report By
 AB9762  HISTORY     - 1996     MONUMENTED       LOCSUR
 AB9762  HISTORY     - 19960415 GOOD             RICE
 AB9762  HISTORY     - 20000328 GOOD             GEOMET
 AB9762
 AB9762                          STATION DESCRIPTION
 AB9762
 AB9762'DESCRIBED BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1996 (RJM)
 AB9762'AT GODDARD SPACE FLIGHT CENTER 2 MILES (3.2 KM) EAST OF GREENBELT
 AB9762'MARYLAND, 3 MILES (4.8 KM) WEST OF BOWIE MARYLAND, 2 MILES (3.2 KM)
 AB9762'EAST OF THE BALTIMORE WASHINGTON PARKWAY ALONG ROUTE 193, SOUTHEAST OF
 AB9762'THE INTERSECTION OF IUE ROAD AND AEROBEE ROAD, 7.5 M (24.6 FT) SOUTH
 AB9762'OF THE CENTERLINE OF AEROBEE ROAD, 7.6 M (24.9 FT) EAST OF THE
 AB9762'CENTERLINE OF IUE ROAD, 4.5 M (14.8 FT) SOUTHWEST OF THE POINT OF
 AB9762'TANGENCY OF THE CURB ON AEROBEE ROAD, 6.5 M (21.3 FT) EAST OF THE
 AB9762'POINT OF CURVATURE OF THE CURB ON IUE ROAD, 0.4 M (1.3 FT) NORTH OF A
 AB9762'WITNESS POST, 0.2 M (0.7 FT) ABOVE THE LEVEL OF THE ROAD.  TO REACH
 AB9762'THE STATION FROM THE INTERSECTION OF GREENBELT ROAD AND GOOD LUCK
 AB9762'ROAD, PROCEED 1.4 KM (0.85 MI) WEST ON GREENBELT ROAD TO THE
 AB9762'INTERSECTION OF GODDARD ROAD AND THE MAIN GATE FOR GODDARD SPACE
 AB9762'FLIGHT CENTER ON THE RIGHT, PROCEED THROUGH THE GATE 0.2 KM (0.10 MI)
 AB9762'TO THE INTERSECTION OF AEROBEE ROAD, TURN LEFT AND PROCEED 0.6 KM
 AB9762'(0.35 MI) TO THE STATION ON THE LEFT IN THE GRASS.  ACCESS SHOULD BE
 AB9762'COORDINATED IN ADVANCE THROUGH THE OFFICE OF THE CHIEF OF FACILITIES
 AB9762'MANAGEMENT AT GODDARD SPACE FLIGHT CENTER (301-286-8931) .
 AB9762
 AB9762                          STATION RECOVERY (1996)
 AB9762
 AB9762'RECOVERY NOTE BY RICE ASSOCIATES PC 1996 (RJM)
 AB9762'RECOVERED AS DESCRIBED.
 AB9762
 AB9762                          STATION RECOVERY (2000)
 AB9762
 AB9762'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (BLH)
 AB9762'GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5610 ***********************************************************************
 AB5610  DESIGNATION -  GPS 004
 AB5610  PID         -  AB5610
 AB5610  STATE/COUNTY-  MD/TALBOT
 AB5610  COUNTRY     -  US
 AB5610  USGS QUAD   -  EASTON (2016)
 AB5610
 AB5610                         *CURRENT SURVEY CONTROL
 AB5610  ______________________________________________________________________
 AB5610* NAD 83(2011) POSITION- 38 49 20.12602(N) 076 06 47.62650(W)   ADJUSTED
 AB5610* NAD 83(2011) ELLIP HT-   -30.113 (meters)        (06/27/12)   ADJUSTED
 AB5610* NAD 83(2011) EPOCH   -  2010.00
 AB5610* NAVD 88 ORTHO HEIGHT -     4.4   (meters)       14.    (feet) GPS OBS
 AB5610  ______________________________________________________________________
 AB5610  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5610  GEOID HEIGHT    -        -34.840 (meters)                     GEOID93
 AB5610  GEOID HEIGHT    -        -34.495 (meters)                     GEOID18
 AB5610  NAD 83(2011) X  -  1,194,186.857 (meters)                     COMP
 AB5610  NAD 83(2011) Y  - -4,830,267.688 (meters)                     COMP
 AB5610  NAD 83(2011) Z  -  3,976,944.343 (meters)                     COMP
 AB5610  LAPLACE CORR    -         -3.83  (seconds)                    DEFLEC18
 AB5610
 AB5610  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5610  Standards:
 AB5610         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5610            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5610  -------------------------------------------------------------------
 AB5610  NETWORK    0.38   1.02           0.17   0.14   0.52     -0.11585404
 AB5610  -------------------------------------------------------------------
 AB5610  Click here for local accuracies and other accuracy information.
 AB5610
 AB5610.The horizontal coordinates were established by GPS observations
 AB5610.and adjusted by the National Geodetic Survey in June 2012.
 AB5610
 AB5610.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5610.been affixed to the stable North American tectonic plate. See 
 AB5610.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5610
 AB5610.The horizontal coordinates are valid at the epoch date displayed above
 AB5610.which is a decimal equivalence of Year/Month/Day.
 AB5610
 AB5610.The orthometric height was determined by GPS observations and a
 AB5610.high-resolution geoid model.
 AB5610
 AB5610.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5610.GEOID18 height accuracy estimate available here.
 AB5610
 AB5610.Click photographs - Photos may exist for this station.
 AB5610
 AB5610.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5610
 AB5610.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5610
 AB5610.The ellipsoidal height was determined by GPS observations
 AB5610.and is referenced to NAD 83.
 AB5610
 AB5610. The following values were computed from the NAD 83(2011) position.
 AB5610
 AB5610;                    North         East     Units Scale Factor Converg.
 AB5610;SPC MD       -   128,649.299   477,004.513   MT  0.99995028   +0 33 23.6
 AB5610;SPC MD       -   422,076.91  1,564,972.31   sFT  0.99995028   +0 33 23.6
 AB5610;UTM  18      - 4,297,641.172   403,361.472   MT  0.99971500   -0 41 52.6
 AB5610
 AB5610!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5610!SPC MD       -   1.00000472  x   0.99995028  =   0.99995500
 AB5610!UTM  18      -   1.00000472  x   0.99971500  =   0.99971972
 AB5610
 AB5610_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0336197641(NAD 83)
 AB5610
 AB5610|---------------------------------------------------------------------|
 AB5610| PID    Reference Object                     Distance      Geod. Az  |
 AB5610|                                                           dddmmss.s |
 AB5610| AB5609 GPS 003                             356.687 METERS 29013     |
 AB5610|---------------------------------------------------------------------|
 AB5610
 AB5610                          SUPERSEDED SURVEY CONTROL
 AB5610
 AB5610  NAD 83(2007)-  38 49 20.12631(N)    076 06 47.62725(W) AD(2002.00) 0
 AB5610  ELLIP H (02/10/07)  -30.081  (m)                       GP(2002.00)    
 AB5610  ELLIP H (08/30/02)  -30.070  (m)                       GP(       ) 4 2
 AB5610  NAD 83(1991)-  38 49 20.12661(N)    076 06 47.62781(W) AD(       ) 1
 AB5610  ELLIP H (08/02/96)  -30.049  (m)                       GP(       ) 3 1
 AB5610
 AB5610.Superseded values are not recommended for survey control.
 AB5610
 AB5610.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5610.See file dsdata.pdf to determine how the superseded data were derived.
 AB5610
 AB5610_MARKER: DD = SURVEY DISK
 AB5610_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5610_STAMPING: NO.GPS-004
 AB5610_MARK LOGO: MD0480
 AB5610_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5610_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5610+STABILITY: SURFACE MOTION
 AB5610_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5610+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5610
 AB5610  HISTORY     - Date     Condition        Report By
 AB5610  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5610  HISTORY     - 20020310 GOOD             USPSQD
 AB5610
 AB5610                          STATION DESCRIPTION
 AB5610
 AB5610'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5610'THE STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) NORTHWEST OF THE CENTER
 AB5610'OF EASTON.
 AB5610'
 AB5610'TO REACH THE STATION FROM THE INTERSECTION OF RT 50 AND RT 662
 AB5610'(OLD WYE MILLS RD), GO SOUTH ON RT 662 FOR 3.45 MI (5.55 KM) TO THE
 AB5610'INTERSECTION WITH HAILEM SCHOOL ROAD.  TURN RIGHT AND GO SOUTH ON
 AB5610'HAILEM SCHOOL ROAD FOR 0.9 MI (1.4 KM) TO THE INTERSECTION WITH
 AB5610'GOLDBOROUGH NECK ROAD.  TURN RIGHT AND GO NORTH AND WEST ON
 AB5610'GOLDSBOROUGH NECK ROAD FOR 2.15 MI (3.46 KM) TO THE STATION ON THE
 AB5610'LEFT.  THE STATION IS ALSO 0.1 MI (0.2 KM) NORTHWEST OF THE
 AB5610'INTERSECTION OF GOLDSBOROUGH NECK ROAD AND ASHBY DRIVE.
 AB5610'
 AB5610'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5610'MONUMENT SET FLUSH WITH THE GROUND ON THE TOP OF A BANK.  IT IS
 AB5610'26.4 FT (8.0 M) SOUTH OF THE CENTERLINE OF THE ROAD, 82.5 FT (25.1 M)
 AB5610'SOUTHEAST OF THE CENTERLINE OF THE INTERSECTION OF THE ROAD WITH A
 AB5610'LANE LEADING TO HOUSE NO. 27750 AND 74.8 FT (22.8 M) EAST OF A FIELD
 AB5610'ENTRANCE.
 AB5610
 AB5610                          STATION RECOVERY (2002)
 AB5610
 AB5610'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5610'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5611 ***********************************************************************
 AB5611  DESIGNATION -  GPS 005
 AB5611  PID         -  AB5611
 AB5611  STATE/COUNTY-  MD/TALBOT
 AB5611  COUNTRY     -  US
 AB5611  USGS QUAD   -  EASTON (2016)
 AB5611
 AB5611                         *CURRENT SURVEY CONTROL
 AB5611  ______________________________________________________________________
 AB5611* NAD 83(2011) POSITION- 38 49 16.29133(N) 076 04 39.65323(W)   ADJUSTED
 AB5611* NAD 83(2011) ELLIP HT-   -24.690 (meters)        (06/27/12)   ADJUSTED
 AB5611* NAD 83(2011) EPOCH   -  2010.00
 AB5611* NAVD 88 ORTHO HEIGHT -     9.884 (meters)       32.43  (feet) ADJUSTED
 AB5611  ______________________________________________________________________
 AB5611  GEOID HEIGHT    -        -34.565 (meters)                     GEOID18
 AB5611  NAD 83(2011) X  -  1,197,202.331 (meters)                     COMP
 AB5611  NAD 83(2011) Y  - -4,829,601.900 (meters)                     COMP
 AB5611  NAD 83(2011) Z  -  3,976,855.615 (meters)                     COMP
 AB5611  LAPLACE CORR    -         -3.31  (seconds)                    DEFLEC18
 AB5611  DYNAMIC HEIGHT  -          9.878 (meters)       32.41  (feet) COMP
 AB5611  MODELED GRAVITY -    980,041.8   (mgal)                       NAVD 88
 AB5611
 AB5611  VERT ORDER      -  SECOND    CLASS I
 AB5611
 AB5611  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5611  Standards:
 AB5611         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5611            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5611  -------------------------------------------------------------------
 AB5611  NETWORK    0.45   0.76           0.18   0.19   0.39     -0.09089565
 AB5611  -------------------------------------------------------------------
 AB5611  Click here for local accuracies and other accuracy information.
 AB5611
 AB5611.The horizontal coordinates were established by GPS observations
 AB5611.and adjusted by the National Geodetic Survey in June 2012.
 AB5611
 AB5611.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5611.been affixed to the stable North American tectonic plate. See 
 AB5611.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5611
 AB5611.The horizontal coordinates are valid at the epoch date displayed above
 AB5611.which is a decimal equivalence of Year/Month/Day.
 AB5611
 AB5611.The orthometric height was determined by differential leveling and
 AB5611.adjusted by the NATIONAL GEODETIC SURVEY
 AB5611.in September 2004.
 AB5611
 AB5611.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5611.GEOID18 height accuracy estimate available here.
 AB5611
 AB5611.Click photographs - Photos may exist for this station.
 AB5611
 AB5611.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5611
 AB5611.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5611
 AB5611.The ellipsoidal height was determined by GPS observations
 AB5611.and is referenced to NAD 83.
 AB5611
 AB5611.The dynamic height is computed by dividing the NAVD 88
 AB5611.geopotential number by the normal gravity value computed on the
 AB5611.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5611.degrees latitude (g = 980.6199 gals.).
 AB5611
 AB5611.The modeled gravity was interpolated from observed gravity values.
 AB5611
 AB5611. The following values were computed from the NAD 83(2011) position.
 AB5611
 AB5611;                    North         East     Units Scale Factor Converg.
 AB5611;SPC MD       -   128,561.649   480,092.499   MT  0.99995030   +0 34 44.0
 AB5611;SPC MD       -   421,789.34  1,575,103.47   sFT  0.99995030   +0 34 44.0
 AB5611;UTM  18      - 4,297,485.972   406,446.061   MT  0.99970777   -0 40 32.3
 AB5611
 AB5611!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5611!SPC MD       -   1.00000387  x   0.99995030  =   0.99995417
 AB5611!UTM  18      -   1.00000387  x   0.99970777  =   0.99971164
 AB5611
 AB5611:                Primary Azimuth Mark                     Grid Az
 AB5611:SPC MD       -  GPS 002                                  024 45 49.6
 AB5611:UTM  18      -  GPS 002                                  026 01 05.9
 AB5611
 AB5611_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0644697485(NAD 83)
 AB5611
 AB5611|---------------------------------------------------------------------|
 AB5611| PID    Reference Object                     Distance      Geod. Az  |
 AB5611|                                                           dddmmss.s |
 AB5611| AB5608 GPS 002                             APPROX. 1.1 KM 0252033.6 |
 AB5611| AB5612 GPS 006                             366.805 METERS 22055     |
 AB5611|---------------------------------------------------------------------|
 AB5611
 AB5611                          SUPERSEDED SURVEY CONTROL
 AB5611
 AB5611  NAD 83(2007)-  38 49 16.29158(N)    076 04 39.65396(W) AD(2002.00) 0
 AB5611  ELLIP H (02/10/07)  -24.658  (m)                       GP(2002.00)    
 AB5611  ELLIP H (08/30/02)  -24.664  (m)                       GP(       ) 4 2
 AB5611  NAD 83(1991)-  38 49 16.29174(N)    076 04 39.65451(W) AD(       ) 1
 AB5611  ELLIP H (08/02/96)  -24.643  (m)                       GP(       ) 3 1
 AB5611  NAVD 88 (08/02/96)    9.9    (m)  GEOID93  model used  GPS OBS        
 AB5611
 AB5611.Superseded values are not recommended for survey control.
 AB5611
 AB5611.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5611.See file dsdata.pdf to determine how the superseded data were derived.
 AB5611
 AB5611_MARKER: DD = SURVEY DISK
 AB5611_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5611_STAMPING: NO. GPS 005
 AB5611_MARK LOGO: MD0480
 AB5611_PROJECTION: FLUSH
 AB5611_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5611+STABILITY: SURFACE MOTION
 AB5611_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5611+SATELLITE: SATELLITE OBSERVATIONS - May 12, 2018
 AB5611
 AB5611  HISTORY     - Date     Condition        Report By
 AB5611  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5611  HISTORY     - 20000726 GOOD             MDSHA
 AB5611  HISTORY     - 20020310 GOOD             USPSQD
 AB5611  HISTORY     - 20180512 GOOD             ARCSHE
 AB5611
 AB5611                          STATION DESCRIPTION
 AB5611
 AB5611'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5611'THE STATION IS LOCATED ABOUT 3.2 MI (5.1 KM) NORTHWEST OF THE CENTER
 AB5611'OF EASTON.
 AB5611'
 AB5611'TO REACH THE STATION FROM THE INTERSECTION OF RT 50 AND RT 662
 AB5611'(OLD WYE MILLS RD), GO SOUTH ON RT 662 FOR 3.45 MI (5.55 KM) TO THE
 AB5611'INTERSECTION WITH HAILEM SCHOOL ROAD.  TURN RIGHT AND GO SOUTH ON
 AB5611'HAILEM SCHOOL ROAD FOR 0.7 MI (1.1 KM) TO THE STATION ON THE
 AB5611'RIGHT.
 AB5611'
 AB5611'MONUMENT SET FLUSH WITH THE GROUND, 23.0 FT (7.0 M) NORTHWEST OF
 AB5611'THE CENTERLINE OF THE ROAD, 139.3 FT (42.5 M) SOUTHWEST OF UTILITY
 AB5611'POLE NO. BEG-1-380, 64.4 FT (19.6 M) NORTHWEST OF UTILITY POLE NO.
 AB5611'BEG-1-379 AND 44.1 FT (13.4 M) NORTHEAST OF UTILITY POLE NO.
 AB5611'BEG-1-379.5.
 AB5611
 AB5611                          STATION RECOVERY (2000)
 AB5611
 AB5611'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5611'RECOVERED AS DESCRIBED.
 AB5611
 AB5611                          STATION RECOVERY (2002)
 AB5611
 AB5611'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5611'REMAINS OF A SHREDDED CARSONITE POST FOUND IN THE VICINITY.
 AB5611
 AB5611                          STATION RECOVERY (2018)
 AB5611
 AB5611'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 AB5611'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5612 ***********************************************************************
 AB5612  DESIGNATION -  GPS 006
 AB5612  PID         -  AB5612
 AB5612  STATE/COUNTY-  MD/TALBOT
 AB5612  COUNTRY     -  US
 AB5612  USGS QUAD   -  EASTON (2016)
 AB5612
 AB5612                         *CURRENT SURVEY CONTROL
 AB5612  ______________________________________________________________________
 AB5612* NAD 83(2011) POSITION- 38 49 07.30263(N) 076 04 49.61197(W)   ADJUSTED
 AB5612* NAD 83(2011) ELLIP HT-   -27.557 (meters)        (06/27/12)   ADJUSTED
 AB5612* NAD 83(2011) EPOCH   -  2010.00
 AB5612* NAVD 88 ORTHO HEIGHT -     7.011 (meters)       23.00  (feet) ADJUSTED
 AB5612  ______________________________________________________________________
 AB5612  GEOID HEIGHT    -        -34.566 (meters)                     GEOID18
 AB5612  NAD 83(2011) X  -  1,197,010.412 (meters)                     COMP
 AB5612  NAD 83(2011) Y  - -4,829,826.183 (meters)                     COMP
 AB5612  NAD 83(2011) Z  -  3,976,637.861 (meters)                     COMP
 AB5612  LAPLACE CORR    -         -3.32  (seconds)                    DEFLEC18
 AB5612  DYNAMIC HEIGHT  -          7.007 (meters)       22.99  (feet) COMP
 AB5612  MODELED GRAVITY -    980,041.6   (mgal)                       NAVD 88
 AB5612
 AB5612  VERT ORDER      -  SECOND    CLASS I
 AB5612
 AB5612  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5612  Standards:
 AB5612         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5612            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5612  -------------------------------------------------------------------
 AB5612  NETWORK    0.86   1.71           0.40   0.28   0.87     -0.19168523
 AB5612  -------------------------------------------------------------------
 AB5612  Click here for local accuracies and other accuracy information.
 AB5612
 AB5612.The horizontal coordinates were established by GPS observations
 AB5612.and adjusted by the National Geodetic Survey in June 2012.
 AB5612
 AB5612.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5612.been affixed to the stable North American tectonic plate. See 
 AB5612.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5612
 AB5612.The horizontal coordinates are valid at the epoch date displayed above
 AB5612.which is a decimal equivalence of Year/Month/Day.
 AB5612
 AB5612.The orthometric height was determined by differential leveling and
 AB5612.adjusted by the NATIONAL GEODETIC SURVEY
 AB5612.in September 2004.
 AB5612
 AB5612.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5612.GEOID18 height accuracy estimate available here.
 AB5612
 AB5612.Click photographs - Photos may exist for this station.
 AB5612
 AB5612.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5612
 AB5612.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5612
 AB5612.The ellipsoidal height was determined by GPS observations
 AB5612.and is referenced to NAD 83.
 AB5612
 AB5612.The dynamic height is computed by dividing the NAVD 88
 AB5612.geopotential number by the normal gravity value computed on the
 AB5612.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5612.degrees latitude (g = 980.6199 gals.).
 AB5612
 AB5612.The modeled gravity was interpolated from observed gravity values.
 AB5612
 AB5612. The following values were computed from the NAD 83(2011) position.
 AB5612
 AB5612;                    North         East     Units Scale Factor Converg.
 AB5612;SPC MD       -   128,282.072   479,855.077   MT  0.99995034   +0 34 37.7
 AB5612;SPC MD       -   420,872.10  1,574,324.53   sFT  0.99995034   +0 34 37.7
 AB5612;UTM  18      - 4,297,211.726   406,202.634   MT  0.99970834   -0 40 38.4
 AB5612
 AB5612!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5612!SPC MD       -   1.00000432  x   0.99995034  =   0.99995466
 AB5612!UTM  18      -   1.00000432  x   0.99970834  =   0.99971266
 AB5612
 AB5612:                Primary Azimuth Mark                     Grid Az
 AB5612:SPC MD       -  GPS 010                                  181 26 55.3
 AB5612:UTM  18      -  GPS 010                                  182 42 11.4
 AB5612
 AB5612_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0620297211(NAD 83)
 AB5612
 AB5612|---------------------------------------------------------------------|
 AB5612| PID    Reference Object                     Distance      Geod. Az  |
 AB5612|                                                           dddmmss.s |
 AB5612| AB5611 GPS 005                             366.805 METERS 04055     |
 AB5612| AB5616 GPS 010                             APPROX. 1.9 KM 1820133.0 |
 AB5612|---------------------------------------------------------------------|
 AB5612
 AB5612                          SUPERSEDED SURVEY CONTROL
 AB5612
 AB5612  NAD 83(2007)-  38 49 07.30289(N)    076 04 49.61271(W) AD(2002.00) 0
 AB5612  ELLIP H (02/10/07)  -27.525  (m)                       GP(2002.00)    
 AB5612  ELLIP H (08/30/02)  -27.527  (m)                       GP(       ) 4 2
 AB5612  NAD 83(1991)-  38 49 07.30299(N)    076 04 49.61331(W) AD(       ) 1
 AB5612  ELLIP H (08/02/96)  -27.511  (m)                       GP(       ) 3 1
 AB5612  NAVD 88 (08/02/96)    7.0    (m)  GEOID93  model used  GPS OBS        
 AB5612
 AB5612.Superseded values are not recommended for survey control.
 AB5612
 AB5612.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5612.See file dsdata.pdf to determine how the superseded data were derived.
 AB5612
 AB5612_MARKER: DD = SURVEY DISK
 AB5612_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5612_STAMPING: NO. GPS 006
 AB5612_MARK LOGO: MD0480
 AB5612_PROJECTION: FLUSH
 AB5612_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5612+STABILITY: SURFACE MOTION
 AB5612_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5612+SATELLITE: SATELLITE OBSERVATIONS - May 12, 2018
 AB5612
 AB5612  HISTORY     - Date     Condition        Report By
 AB5612  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5612  HISTORY     - 20000726 GOOD             MDSHA
 AB5612  HISTORY     - 20020310 GOOD             USPSQD
 AB5612  HISTORY     - 20180512 GOOD             ARCSHE
 AB5612
 AB5612                          STATION DESCRIPTION
 AB5612
 AB5612'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5612'THE STATION IS LOCATED ABOUT 3.0 MI (4.8 KM) NORTHWEST OF THE CENTER
 AB5612'OF EASTON.
 AB5612'
 AB5612'TO REACH THE STATION FROM THE INTERSECTION OF RT 50 AND RT 662
 AB5612'(OLD WYE MILLS RD), GO SOUTH ON RT 662 FOR 3.45 MI (5.55 KM) TO THE
 AB5612'INTERSECTION WITH HAILEM SCHOOL ROAD.  TURN RIGHT AND GO SOUTH ON
 AB5612'HAILEM SCHOOL ROAD FOR 0.9 MI (1.4 KM) TO THE INTERSECTION WITH
 AB5612'GOLDBOROUGH NECK ROAD AND THE STATION ON THE RIGHT.
 AB5612'
 AB5612'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5612'MONUMENT SET FLUSH WITH THE GROUND, 38.15 FT (11.63 M) NORTH OF THE
 AB5612'CENTERLINE OF HAILEM SCHOOL ROAD, 26.6 FT (8.1 M) EAST OF THE
 AB5612'CENTERLINE OF GOLDSBOROUGH NECK ROAD, 14.0 FT (4.3 M) NORTH OF THE
 AB5612'NORTH END OF A CONCRETE HEADWALL, 8.3 FT (2.5 M) NORTHEAST OF UTILITY
 AB5612'POLE NO. ACB 18.5 AND 40.2 FT (12.3 M) EAST OF UTILITY POLE NO.
 AB5612'BEG-1-285.
 AB5612
 AB5612                          STATION RECOVERY (2000)
 AB5612
 AB5612'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5612'RECOVERED AS DESCRIBED.
 AB5612
 AB5612                          STATION RECOVERY (2002)
 AB5612
 AB5612'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5612'REFERENCED HEADWALL IS IN POOR CONDITION. UTILITY POLE NUMBER ABC 18.5
 AB5612'RENUMBERED 1-284.
 AB5612
 AB5612                          STATION RECOVERY (2018)
 AB5612
 AB5612'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 AB5612'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5613 ***********************************************************************
 AB5613  DESIGNATION -  GPS 007
 AB5613  PID         -  AB5613
 AB5613  STATE/COUNTY-  MD/TALBOT
 AB5613  COUNTRY     -  US
 AB5613  USGS QUAD   -  EASTON (2016)
 AB5613
 AB5613                         *CURRENT SURVEY CONTROL
 AB5613  ______________________________________________________________________
 AB5613* NAD 83(2011) POSITION- 38 48 01.65428(N) 076 06 29.16516(W)   ADJUSTED
 AB5613* NAD 83(2011) ELLIP HT-   -30.031 (meters)        (06/27/12)   ADJUSTED
 AB5613* NAD 83(2011) EPOCH   -  2010.00
 AB5613* NAVD 88 ORTHO HEIGHT -     4.6   (meters)       15.    (feet) GPS OBS
 AB5613  ______________________________________________________________________
 AB5613  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5613  GEOID HEIGHT    -        -34.900 (meters)                     GEOID93
 AB5613  GEOID HEIGHT    -        -34.556 (meters)                     GEOID18
 AB5613  NAD 83(2011) X  -  1,194,983.319 (meters)                     COMP
 AB5613  NAD 83(2011) Y  - -4,831,633.112 (meters)                     COMP
 AB5613  NAD 83(2011) Z  -  3,975,058.859 (meters)                     COMP
 AB5613  LAPLACE CORR    -         -3.66  (seconds)                    DEFLEC18
 AB5613
 AB5613  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5613  Standards:
 AB5613         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5613            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5613  -------------------------------------------------------------------
 AB5613  NETWORK    0.38   0.86           0.16   0.15   0.44     -0.10149629
 AB5613  -------------------------------------------------------------------
 AB5613  Click here for local accuracies and other accuracy information.
 AB5613
 AB5613.The horizontal coordinates were established by GPS observations
 AB5613.and adjusted by the National Geodetic Survey in June 2012.
 AB5613
 AB5613.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5613.been affixed to the stable North American tectonic plate. See 
 AB5613.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5613
 AB5613.The horizontal coordinates are valid at the epoch date displayed above
 AB5613.which is a decimal equivalence of Year/Month/Day.
 AB5613
 AB5613.The orthometric height was determined by GPS observations and a
 AB5613.high-resolution geoid model.
 AB5613
 AB5613.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5613.GEOID18 height accuracy estimate available here.
 AB5613
 AB5613.Click photographs - Photos may exist for this station.
 AB5613
 AB5613.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5613
 AB5613.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5613
 AB5613.The ellipsoidal height was determined by GPS observations
 AB5613.and is referenced to NAD 83.
 AB5613
 AB5613. The following values were computed from the NAD 83(2011) position.
 AB5613
 AB5613;                    North         East     Units Scale Factor Converg.
 AB5613;SPC MD       -   126,234.068   477,473.453   MT  0.99995071   +0 33 35.2
 AB5613;SPC MD       -   414,152.94  1,566,510.82   sFT  0.99995071   +0 33 35.2
 AB5613;UTM  18      - 4,295,216.826   403,777.329   MT  0.99971401   -0 41 39.8
 AB5613
 AB5613!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5613!SPC MD       -   1.00000471  x   0.99995071  =   0.99995542
 AB5613!UTM  18      -   1.00000471  x   0.99971401  =   0.99971872
 AB5613
 AB5613_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0377795216(NAD 83)
 AB5613
 AB5613|---------------------------------------------------------------------|
 AB5613| PID    Reference Object                     Distance      Geod. Az  |
 AB5613|                                                           dddmmss.s |
 AB5613| AB5614 GPS 008                             366.491 METERS 23616     |
 AB5613|---------------------------------------------------------------------|
 AB5613
 AB5613                          SUPERSEDED SURVEY CONTROL
 AB5613
 AB5613  NAD 83(2007)-  38 48 01.65461(N)    076 06 29.16591(W) AD(2002.00) 0
 AB5613  ELLIP H (02/10/07)  -29.994  (m)                       GP(2002.00)    
 AB5613  ELLIP H (08/30/02)  -29.952  (m)                       GP(       ) 4 2
 AB5613  NAD 83(1991)-  38 48 01.65526(N)    076 06 29.16652(W) AD(       ) 1
 AB5613  ELLIP H (08/02/96)  -29.943  (m)                       GP(       ) 3 1
 AB5613
 AB5613.Superseded values are not recommended for survey control.
 AB5613
 AB5613.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5613.See file dsdata.pdf to determine how the superseded data were derived.
 AB5613
 AB5613_MARKER: DD = SURVEY DISK
 AB5613_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5613_STAMPING: NO.GPS 007
 AB5613_MARK LOGO: MD0480
 AB5613_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5613_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5613+STABILITY: SURFACE MOTION
 AB5613_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5613+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5613
 AB5613  HISTORY     - Date     Condition        Report By
 AB5613  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5613  HISTORY     - 20020310 GOOD             USPSQD
 AB5613
 AB5613                          STATION DESCRIPTION
 AB5613
 AB5613'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5613'THE STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) NORTHWEST OF THE CENTER
 AB5613'OF EASTON.
 AB5613'
 AB5613'TO REACH THE STATION FROM THE INTERSECTION OF RT 33 (ST. MICHAELS
 AB5613'ROAD) AND RT 322 (EASTON PARKWAY), GO NORTH ON 322 FOR 0.8 MI (1.3 KM)
 AB5613'TO THE INTERSECTION WITH GLEBE ROAD.  TURN LEFT ON GLEBE ROAD AND GO
 AB5613'NORTHWEST FOR 0.65 MI (1.05 KM) TO THE INTERSECTION WITH GOLDSBOROUGH
 AB5613'NECK ROAD.  TURN RIGHT AND GO NORTH ON GOLDSBOROUGH NECK ROAD FOR 0.3
 AB5613'MI (0.5 KM) THE INTERSECTION WITH VILLA ROAD.  TURN LEFT AND GO WEST
 AB5613'ON VILLA ROAD FOR 1.3 MI (2.1 KM) TO THE INTERSECTION WITH GLEBE CREEK
 AB5613'ROAD AND THE STATION ON THE RIGHT.
 AB5613'
 AB5613'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5613'MONUMENT FLUSH WITH THE GROUND, 73.0 FT (22.3 M) WEST OF UTILITY POLE
 AB5613'NO. BEG-1-139, 81.8 FT (24.9 M) NORTHEAST OF UTILITY POLE NO.
 AB5613'BEG-1-140, 44.0 FT (13.4 M) NORTHWEST OF THE CENTERLINE OF THE
 AB5613'INTERSECTIONS OF THE ROADS AND 110.7 FT (33.7 M) NORTH OF UTILITY POLE
 AB5613'NO. BEG-1-178.
 AB5613
 AB5613                          STATION RECOVERY (2002)
 AB5613
 AB5613'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5613'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5614 ***********************************************************************
 AB5614  DESIGNATION -  GPS 008
 AB5614  PID         -  AB5614
 AB5614  STATE/COUNTY-  MD/TALBOT
 AB5614  COUNTRY     -  US
 AB5614  USGS QUAD   -  EASTON (2016)
 AB5614
 AB5614                         *CURRENT SURVEY CONTROL
 AB5614  ______________________________________________________________________
 AB5614* NAD 83(2011) POSITION- 38 47 55.05446(N) 076 06 41.79600(W)   ADJUSTED
 AB5614* NAD 83(2011) ELLIP HT-   -30.089 (meters)        (06/27/12)   ADJUSTED
 AB5614* NAD 83(2011) EPOCH   -  2010.00
 AB5614* NAVD 88 ORTHO HEIGHT -     4.5   (meters)       15.    (feet) GPS OBS
 AB5614  ______________________________________________________________________
 AB5614  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5614  GEOID HEIGHT    -        -34.897 (meters)                     GEOID93
 AB5614  GEOID HEIGHT    -        -34.554 (meters)                     GEOID18
 AB5614  NAD 83(2011) X  -  1,194,718.045 (meters)                     COMP
 AB5614  NAD 83(2011) Y  - -4,831,830.029 (meters)                     COMP
 AB5614  NAD 83(2011) Z  -  3,974,900.215 (meters)                     COMP
 AB5614  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 AB5614
 AB5614  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5614  Standards:
 AB5614         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5614            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5614  -------------------------------------------------------------------
 AB5614  NETWORK    0.53   1.10           0.24   0.19   0.56      0.00108193
 AB5614  -------------------------------------------------------------------
 AB5614  Click here for local accuracies and other accuracy information.
 AB5614
 AB5614.The horizontal coordinates were established by GPS observations
 AB5614.and adjusted by the National Geodetic Survey in June 2012.
 AB5614
 AB5614.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5614.been affixed to the stable North American tectonic plate. See 
 AB5614.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5614
 AB5614.The horizontal coordinates are valid at the epoch date displayed above
 AB5614.which is a decimal equivalence of Year/Month/Day.
 AB5614
 AB5614.The orthometric height was determined by GPS observations and a
 AB5614.high-resolution geoid model.
 AB5614
 AB5614.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5614.GEOID18 height accuracy estimate available here.
 AB5614
 AB5614.Click photographs - Photos may exist for this station.
 AB5614
 AB5614.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5614
 AB5614.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5614
 AB5614.The ellipsoidal height was determined by GPS observations
 AB5614.and is referenced to NAD 83.
 AB5614
 AB5614. The following values were computed from the NAD 83(2011) position.
 AB5614
 AB5614;                    North         East     Units Scale Factor Converg.
 AB5614;SPC MD       -   126,027.601   477,170.676   MT  0.99995075   +0 33 27.3
 AB5614;SPC MD       -   413,475.55  1,565,517.46   sFT  0.99995075   +0 33 27.3
 AB5614;UTM  18      - 4,295,017.082   403,470.179   MT  0.99971474   -0 41 47.7
 AB5614
 AB5614!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5614!SPC MD       -   1.00000472  x   0.99995075  =   0.99995547
 AB5614!UTM  18      -   1.00000472  x   0.99971474  =   0.99971946
 AB5614
 AB5614:                Primary Azimuth Mark                     Grid Az
 AB5614:SPC MD       -  GPS 033                                  178 30 47.9
 AB5614:UTM  18      -  GPS 033                                  179 46 02.9
 AB5614
 AB5614_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0347095017(NAD 83)
 AB5614
 AB5614|---------------------------------------------------------------------|
 AB5614| PID    Reference Object                     Distance      Geod. Az  |
 AB5614|                                                           dddmmss.s |
 AB5614| AB5613 GPS 007                             366.491 METERS 05616     |
 AB5614| AB5639 GPS 033                             APPROX. 1.8 KM 1790415.2 |
 AB5614|---------------------------------------------------------------------|
 AB5614
 AB5614                          SUPERSEDED SURVEY CONTROL
 AB5614
 AB5614  NAD 83(2007)-  38 47 55.05475(N)    076 06 41.79675(W) AD(2002.00) 0
 AB5614  ELLIP H (02/10/07)  -30.050  (m)                       GP(2002.00)    
 AB5614  ELLIP H (08/30/02)  -30.009  (m)                       GP(       ) 4 2
 AB5614  NAD 83(1991)-  38 47 55.05538(N)    076 06 41.79738(W) AD(       ) 1
 AB5614  ELLIP H (08/02/96)  -29.996  (m)                       GP(       ) 3 1
 AB5614
 AB5614.Superseded values are not recommended for survey control.
 AB5614
 AB5614.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5614.See file dsdata.pdf to determine how the superseded data were derived.
 AB5614
 AB5614_MARKER: DD = SURVEY DISK
 AB5614_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5614_STAMPING: NO.GPS 008
 AB5614_MARK LOGO: MD0480
 AB5614_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5614_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5614+STABILITY: SURFACE MOTION
 AB5614_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5614+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5614
 AB5614  HISTORY     - Date     Condition        Report By
 AB5614  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5614  HISTORY     - 20020310 GOOD             USPSQD
 AB5614
 AB5614                          STATION DESCRIPTION
 AB5614
 AB5614'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5614'THE STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) NORTHWEST OF THE CENTER
 AB5614'OF EASTON.
 AB5614'
 AB5614'TO REACH THE STATION FROM THE INTERSECTION OF RT 33 (ST. MICHAELS
 AB5614'ROAD) AND RT 322 (EASTON PARKWAY), GO NORTH ON 322 FOR 0.8 MI (1.3 KM)
 AB5614'TO THE INTERSECTION WITH GLEBE ROAD.  TURN LEFT ON GLEBE ROAD AND GO
 AB5614'NORTHWEST FOR 0.65 MI (1.05 KM) TO THE INTERSECTION WITH GOLDBOROUGH
 AB5614'NECK ROAD.  TURN RIGHT AND GO NORTH ON GOLDSBOROUGH NECK ROAD FOR 0.3
 AB5614'MI (0.5 KM) THE INTERSECTION WITH VILLA ROAD.  TURN LEFT AND GO WEST
 AB5614'ON VILLA ROAD FOR 1.55 MI (2.49 KM) TO THE STATION ON THE LEFT.
 AB5614'
 AB5614'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5614'MONUMENT FLUSH WITH THE GROUND, 24.2 FT (7.4 M) SOUTHEAST OF THE
 AB5614'CENTERLINE OF VILLA ROAD, 150.4 FT (45.8 M) NORTHEAST OF THE
 AB5614'CENTERLINE OF WILKINSON LANE (PRIVATE) AND 86.4 FT (26.3 M)
 AB5614'SOUTHWEST OF UTILITY POLE NO. BEG-1-184.
 AB5614
 AB5614                          STATION RECOVERY (2002)
 AB5614
 AB5614'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5614'SHREDDED CARSONITE POST FOUND IN THE VICINITY. REFERENCED WILKINSON
 AB5614'LANE IS AT MAILBOX NUMBER 27789.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5615 ***********************************************************************
 AB5615  DESIGNATION -  GPS 009
 AB5615  PID         -  AB5615
 AB5615  STATE/COUNTY-  MD/TALBOT
 AB5615  COUNTRY     -  US
 AB5615  USGS QUAD   -  EASTON (2016)
 AB5615
 AB5615                         *CURRENT SURVEY CONTROL
 AB5615  ______________________________________________________________________
 AB5615* NAD 83(2011) POSITION- 38 47 49.68265(N) 076 05 04.46941(W)   ADJUSTED
 AB5615* NAD 83(2011) ELLIP HT-   -29.635 (meters)        (06/27/12)   ADJUSTED
 AB5615* NAD 83(2011) EPOCH   -  2010.00
 AB5615* NAVD 88 ORTHO HEIGHT -     4.978 (meters)       16.33  (feet) ADJUSTED
 AB5615  ______________________________________________________________________
 AB5615  GEOID HEIGHT    -        -34.606 (meters)                     GEOID18
 AB5615  NAD 83(2011) X  -  1,197,022.869 (meters)                     COMP
 AB5615  NAD 83(2011) Y  - -4,831,366.848 (meters)                     COMP
 AB5615  NAD 83(2011) Z  -  3,974,771.400 (meters)                     COMP
 AB5615  LAPLACE CORR    -         -3.30  (seconds)                    DEFLEC18
 AB5615  DYNAMIC HEIGHT  -          4.975 (meters)       16.32  (feet) COMP
 AB5615  MODELED GRAVITY -    980,039.2   (mgal)                       NAVD 88
 AB5615
 AB5615  VERT ORDER      -  SECOND    CLASS I
 AB5615
 AB5615  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5615  Standards:
 AB5615         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5615            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5615  -------------------------------------------------------------------
 AB5615  NETWORK    0.31   0.49           0.13   0.12   0.25     -0.12505809
 AB5615  -------------------------------------------------------------------
 AB5615  Click here for local accuracies and other accuracy information.
 AB5615
 AB5615.The horizontal coordinates were established by GPS observations
 AB5615.and adjusted by the National Geodetic Survey in June 2012.
 AB5615
 AB5615.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5615.been affixed to the stable North American tectonic plate. See 
 AB5615.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5615
 AB5615.The horizontal coordinates are valid at the epoch date displayed above
 AB5615.which is a decimal equivalence of Year/Month/Day.
 AB5615
 AB5615.The orthometric height was determined by differential leveling and
 AB5615.adjusted by the NATIONAL GEODETIC SURVEY
 AB5615.in September 2004.
 AB5615
 AB5615.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5615.GEOID18 height accuracy estimate available here.
 AB5615
 AB5615.Click photographs - Photos may exist for this station.
 AB5615
 AB5615.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5615
 AB5615.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5615
 AB5615.The ellipsoidal height was determined by GPS observations
 AB5615.and is referenced to NAD 83.
 AB5615
 AB5615.The dynamic height is computed by dividing the NAVD 88
 AB5615.geopotential number by the normal gravity value computed on the
 AB5615.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5615.degrees latitude (g = 980.6199 gals.).
 AB5615
 AB5615.The modeled gravity was interpolated from observed gravity values.
 AB5615
 AB5615. The following values were computed from the NAD 83(2011) position.
 AB5615
 AB5615;                    North         East     Units Scale Factor Converg.
 AB5615;SPC MD       -   125,885.171   479,520.690   MT  0.99995079   +0 34 28.4
 AB5615;SPC MD       -   413,008.27  1,573,227.46   sFT  0.99995079   +0 34 28.4
 AB5615;UTM  18      - 4,294,823.297   405,815.952   MT  0.99970923   -0 40 46.6
 AB5615
 AB5615!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5615!SPC MD       -   1.00000465  x   0.99995079  =   0.99995544
 AB5615!UTM  18      -   1.00000465  x   0.99970923  =   0.99971388
 AB5615
 AB5615:                Primary Azimuth Mark                     Grid Az
 AB5615:SPC MD       -  GPS 051                                  149 09 50.6
 AB5615:UTM  18      -  GPS 051                                  150 25 05.6
 AB5615
 AB5615_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0581594823(NAD 83)
 AB5615
 AB5615|---------------------------------------------------------------------|
 AB5615| PID    Reference Object                     Distance      Geod. Az  |
 AB5615|                                                           dddmmss.s |
 AB5615| DH8691 GPS 051                             APPROX. 1.2 KM 1494419.0 |
 AB5615| AB5642 GPS 036                             APPROX. 1.7 KM 1760146.2 |
 AB5615|---------------------------------------------------------------------|
 AB5615
 AB5615                          SUPERSEDED SURVEY CONTROL
 AB5615
 AB5615  NAD 83(2007)-  38 47 49.68297(N)    076 05 04.47016(W) AD(2002.00) 0
 AB5615  ELLIP H (02/10/07)  -29.606  (m)                       GP(2002.00)    
 AB5615  ELLIP H (08/30/02)  -29.589  (m)                       GP(       ) 4 2
 AB5615  NAD 83(1991)-  38 47 49.68332(N)    076 05 04.47077(W) AD(       ) 1
 AB5615  ELLIP H (08/02/96)  -29.562  (m)                       GP(       ) 3 1
 AB5615  NAVD 88               4.98   (m)           16.3    (f) LEVELING    3  
 AB5615  NAVD 88 (08/02/96)    5.0    (m)  GEOID93  model used  GPS OBS        
 AB5615
 AB5615.Superseded values are not recommended for survey control.
 AB5615
 AB5615.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5615.See file dsdata.pdf to determine how the superseded data were derived.
 AB5615
 AB5615_MARKER: DD = SURVEY DISK
 AB5615_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5615_STAMPING: NO. GPS 009
 AB5615_MARK LOGO: MD0480
 AB5615_PROJECTION: FLUSH
 AB5615_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5615_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5615+STABILITY: SURFACE MOTION
 AB5615_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5615+SATELLITE: SATELLITE OBSERVATIONS - January 06, 2006
 AB5615
 AB5615  HISTORY     - Date     Condition        Report By
 AB5615  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5615  HISTORY     - 20000726 GOOD             MDSHA
 AB5615  HISTORY     - 20020310 GOOD             USPSQD
 AB5615  HISTORY     - 20060106 GOOD             GEOMET
 AB5615
 AB5615                          STATION DESCRIPTION
 AB5615
 AB5615'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5615'THE STATION IS LOCATED ABOUT 1.5 MI (2.4 KM) NORTH OF THE CENTER OF
 AB5615'EASTON.
 AB5615'
 AB5615'TO REACH THE STATION FROM THE INTERSECTION OF RT 33 (ST. MICHAELS
 AB5615'ROAD) AND RT 322 (EASTON PARKWAY), GO NORTH ON 322 FOR 0.8 MI (1.3 KM)
 AB5615'TO THE INTERSECTION WITH GLEBE ROAD.  TURN LEFT ON GLEBE ROAD AND GO
 AB5615'NORTHWEST FOR 0.65 MI (1.05 KM) TO THE INTERSECTION WITH GOLDSBOROUGH
 AB5615'NECK ROAD.  TURN RIGHT AND GO NORTH ON GOLDSBOROUGH NECK ROAD FOR 0.3
 AB5615'MI (0.5 KM) TO THE INTERSECTION WITH VILLA ROAD AND THE STATION ON THE
 AB5615'LEFT.
 AB5615'
 AB5615'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5615'MONUMENT FLUSH WITH THE GROUND, 49.2 FT (15.0 M) NORTHWEST OF
 AB5615'UTILITY POLE NO. BEG-1-98, 23.8 FT (7.3 M) EAST OF UTILITY POLE NO.
 AB5615'BEG-1-99, 27.0 FT (8.2 M) NORTHEAST OF THE CENTERLINE OF VILLA ROAD,
 AB5615'27.0 FT (8.2 M) NORTHWEST OF THE CENTERLINE OF GOLDSBOROUGH NECK ROAD
 AB5615'AND 78.6 FT (24.0 M) SOUTHWEST OF TELEPHONE PEDESTAL NO. 61.5.
 AB5615
 AB5615                          STATION RECOVERY (2000)
 AB5615
 AB5615'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5615'RECOVERED AS DESCRIBED.
 AB5615
 AB5615                          STATION RECOVERY (2002)
 AB5615
 AB5615'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5615'AB5615 DESIGNATION SHOULD READ GPS 009.
 AB5615
 AB5615                          STATION RECOVERY (2006)
 AB5615
 AB5615'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2006 (KRO)
 AB5615'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5616 ***********************************************************************
 AB5616  DESIGNATION -  GPS 010
 AB5616  PID         -  AB5616
 AB5616  STATE/COUNTY-  MD/TALBOT
 AB5616  COUNTRY     -  US
 AB5616  USGS QUAD   -  EASTON (2016)
 AB5616
 AB5616                         *CURRENT SURVEY CONTROL
 AB5616  ______________________________________________________________________
 AB5616* NAD 83(2011) POSITION- 38 48 06.35160(N) 076 04 52.36718(W)   ADJUSTED
 AB5616* NAD 83(2011) ELLIP HT-   -28.636 (meters)        (06/27/12)   ADJUSTED
 AB5616* NAD 83(2011) EPOCH   -  2010.00
 AB5616* NAVD 88 ORTHO HEIGHT -     5.974 (meters)       19.60  (feet) ADJUSTED
 AB5616  ______________________________________________________________________
 AB5616  GEOID HEIGHT    -        -34.602 (meters)                     GEOID18
 AB5616  NAD 83(2011) X  -  1,197,229.052 (meters)                     COMP
 AB5616  NAD 83(2011) Y  - -4,830,984.741 (meters)                     COMP
 AB5616  NAD 83(2011) Z  -  3,975,172.617 (meters)                     COMP
 AB5616  LAPLACE CORR    -         -3.27  (seconds)                    DEFLEC18
 AB5616  DYNAMIC HEIGHT  -          5.970 (meters)       19.59  (feet) COMP
 AB5616  MODELED GRAVITY -    980,039.6   (mgal)                       NAVD 88
 AB5616
 AB5616  VERT ORDER      -  SECOND    CLASS I
 AB5616
 AB5616  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5616  Standards:
 AB5616         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5616            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5616  -------------------------------------------------------------------
 AB5616  NETWORK    0.34   0.71           0.14   0.14   0.36     -0.12318318
 AB5616  -------------------------------------------------------------------
 AB5616  Click here for local accuracies and other accuracy information.
 AB5616
 AB5616.The horizontal coordinates were established by GPS observations
 AB5616.and adjusted by the National Geodetic Survey in June 2012.
 AB5616
 AB5616.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5616.been affixed to the stable North American tectonic plate. See 
 AB5616.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5616
 AB5616.The horizontal coordinates are valid at the epoch date displayed above
 AB5616.which is a decimal equivalence of Year/Month/Day.
 AB5616
 AB5616.The orthometric height was determined by differential leveling and
 AB5616.adjusted by the NATIONAL GEODETIC SURVEY
 AB5616.in September 2004.
 AB5616
 AB5616.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5616.GEOID18 height accuracy estimate available here.
 AB5616
 AB5616.Click photographs - Photos may exist for this station.
 AB5616
 AB5616.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5616
 AB5616.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5616
 AB5616.The ellipsoidal height was determined by GPS observations
 AB5616.and is referenced to NAD 83.
 AB5616
 AB5616.The dynamic height is computed by dividing the NAVD 88
 AB5616.geopotential number by the normal gravity value computed on the
 AB5616.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5616.degrees latitude (g = 980.6199 gals.).
 AB5616
 AB5616.The modeled gravity was interpolated from observed gravity values.
 AB5616
 AB5616. The following values were computed from the NAD 83(2011) position.
 AB5616
 AB5616;                    North         East     Units Scale Factor Converg.
 AB5616;SPC MD       -   126,402.066   479,807.532   MT  0.99995068   +0 34 36.0
 AB5616;SPC MD       -   414,704.11  1,574,168.54   sFT  0.99995068   +0 34 36.0
 AB5616;UTM  18      - 4,295,333.667   406,113.967   MT  0.99970854   -0 40 39.2
 AB5616
 AB5616!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5616!SPC MD       -   1.00000449  x   0.99995068  =   0.99995517
 AB5616!UTM  18      -   1.00000449  x   0.99970854  =   0.99971303
 AB5616
 AB5616:                Primary Azimuth Mark                     Grid Az
 AB5616:SPC MD       -  GPS 006                                  001 26 55.3
 AB5616:UTM  18      -  GPS 006                                  002 42 10.5
 AB5616
 AB5616_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0611395333(NAD 83)
 AB5616
 AB5616|---------------------------------------------------------------------|
 AB5616| PID    Reference Object                     Distance      Geod. Az  |
 AB5616|                                                           dddmmss.s |
 AB5616| AB5612 GPS 006                             APPROX. 1.9 KM 0020131.3 |
 AB5616| AB5615 GPS 009                             APPROX. 0.6 KM 2093614.3 |
 AB5616|---------------------------------------------------------------------|
 AB5616
 AB5616                          SUPERSEDED SURVEY CONTROL
 AB5616
 AB5616  NAD 83(2007)-  38 48 06.35189(N)    076 04 52.36793(W) AD(2002.00) 0
 AB5616  ELLIP H (02/10/07)  -28.605  (m)                       GP(2002.00)    
 AB5616  ELLIP H (08/30/02)  -28.606  (m)                       GP(       ) 4 2
 AB5616  NAD 83(1991)-  38 48 06.35185(N)    076 04 52.36856(W) AD(       ) 1
 AB5616  ELLIP H (08/02/96)  -28.578  (m)                       GP(       ) 3 1
 AB5616  NAVD 88 (08/02/96)    6.0    (m)  GEOID93  model used  GPS OBS        
 AB5616
 AB5616.Superseded values are not recommended for survey control.
 AB5616
 AB5616.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5616.See file dsdata.pdf to determine how the superseded data were derived.
 AB5616
 AB5616_MARKER: DD = SURVEY DISK
 AB5616_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5616_STAMPING: NO. GPS O10
 AB5616_MARK LOGO: MD0480
 AB5616_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5616_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5616+STABILITY: SURFACE MOTION
 AB5616_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5616+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5616
 AB5616  HISTORY     - Date     Condition        Report By
 AB5616  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5616  HISTORY     - 20000726 GOOD             MDSHA
 AB5616  HISTORY     - 20020310 GOOD             USPSQD
 AB5616
 AB5616                          STATION DESCRIPTION
 AB5616
 AB5616'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5616'THE STATION IS LOCATED ABOUT 1.8 MI (2.9 KM) NORTH OF THE CENTER OF
 AB5616'EASTON.
 AB5616'
 AB5616'TO REACH THE STATION FROM THE INTERSECTION OF RT 33 (ST. MICHAELS
 AB5616'ROAD) AND RT 322 (EASTON PARKWAY), GO NORTH ON 322 FOR 0.8 MI (1.3 KM)
 AB5616'TO THE INTERSECTION WITH GLEBE ROAD.  TURN LEFT ON GLEBE ROAD AND GO
 AB5616'NORTHWEST FOR 0.65 MI (1.05 KM) TO THE INTERSECTION WITH GOLDSBOROUGH
 AB5616'NECK ROAD.  TURN RIGHT AND GO NORTH ON GOLDSBOROUGH NECK ROAD FOR 0.7
 AB5616'MI (1.1 KM) TO THE STATION ON THE RIGHT.
 AB5616'
 AB5616'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5616'MONUMENT FLUSH WITH THE GROUND, 50.8 FT (15.5 M) SOUTHEAST OF UTILITY
 AB5616'POLE NO. BEG-1-238, 57.5 FT (17.5 M) SOUTHWEST OF UTILITY POLE NO.
 AB5616'BEG-1-237 AND 19.5 FT (5.9 M) SOUTHEAST OF THE CENTERLINE OF THE ROAD.
 AB5616
 AB5616                          STATION RECOVERY (2000)
 AB5616
 AB5616'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5616'RECOVERED AS DESCRIBED.
 AB5616
 AB5616                          STATION RECOVERY (2002)
 AB5616
 AB5616'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5616'REMAINS OF SHREDDED CARSONITE POST FOUND IN THE VICINITY. MARK IS
 AB5616'DIRECTLY ACROSS THE ROAD FROM A UNPAVED DRIVEWAY TO LEADING NUMBER
 AB5616'9202.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5617 ***********************************************************************
 AB5617  SACS        -  This is a Secondary Airport Control Station.
 AB5617  DESIGNATION -  GPS 011
 AB5617  PID         -  AB5617
 AB5617  STATE/COUNTY-  MD/TALBOT
 AB5617  COUNTRY     -  US
 AB5617  USGS QUAD   -  EASTON (2016)
 AB5617
 AB5617                         *CURRENT SURVEY CONTROL
 AB5617  ______________________________________________________________________
 AB5617* NAD 83(2011) POSITION- 38 48 46.14066(N) 076 03 37.42085(W)   ADJUSTED
 AB5617* NAD 83(2011) ELLIP HT-   -13.711 (meters)        (06/27/12)   ADJUSTED
 AB5617* NAD 83(2011) EPOCH   -  2010.00
 AB5617* NAVD 88 ORTHO HEIGHT -    20.915 (meters)       68.62  (feet) ADJUSTED
 AB5617  ______________________________________________________________________
 AB5617  GEOID HEIGHT    -        -34.613 (meters)                     GEOID18
 AB5617  NAD 83(2011) X  -  1,198,801.877 (meters)                     COMP
 AB5617  NAD 83(2011) Y  - -4,829,814.405 (meters)                     COMP
 AB5617  NAD 83(2011) Z  -  3,976,138.086 (meters)                     COMP
 AB5617  LAPLACE CORR    -         -3.22  (seconds)                    DEFLEC18
 AB5617  DYNAMIC HEIGHT  -         20.903 (meters)       68.58  (feet) COMP
 AB5617  MODELED GRAVITY -    980,040.3   (mgal)                       NAVD 88
 AB5617
 AB5617  VERT ORDER      -  SECOND    CLASS I
 AB5617
 AB5617  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5617  Standards:
 AB5617         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5617            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5617  -------------------------------------------------------------------
 AB5617  NETWORK    0.30   0.43           0.13   0.11   0.22     -0.12172223
 AB5617  -------------------------------------------------------------------
 AB5617  Click here for local accuracies and other accuracy information.
 AB5617
 AB5617.This mark is at Easton/newnam Field Airport (ESN)
 AB5617
 AB5617.The horizontal coordinates were established by GPS observations
 AB5617.and adjusted by the National Geodetic Survey in June 2012.
 AB5617
 AB5617.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5617.been affixed to the stable North American tectonic plate. See 
 AB5617.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5617
 AB5617.The horizontal coordinates are valid at the epoch date displayed above
 AB5617.which is a decimal equivalence of Year/Month/Day.
 AB5617
 AB5617.The orthometric height was determined by differential leveling and
 AB5617.adjusted by the NATIONAL GEODETIC SURVEY
 AB5617.in September 2004.
 AB5617
 AB5617.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5617.GEOID18 height accuracy estimate available here.
 AB5617
 AB5617.Click photographs - Photos may exist for this station.
 AB5617
 AB5617.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5617
 AB5617.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5617
 AB5617.The ellipsoidal height was determined by GPS observations
 AB5617.and is referenced to NAD 83.
 AB5617
 AB5617.The dynamic height is computed by dividing the NAVD 88
 AB5617.geopotential number by the normal gravity value computed on the
 AB5617.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5617.degrees latitude (g = 980.6199 gals.).
 AB5617
 AB5617.The modeled gravity was interpolated from observed gravity values.
 AB5617
 AB5617. The following values were computed from the NAD 83(2011) position.
 AB5617
 AB5617;                    North         East     Units Scale Factor Converg.
 AB5617;SPC MD       -   127,647.307   481,603.168   MT  0.99995045   +0 35 23.0
 AB5617;SPC MD       -   418,789.54  1,580,059.73   sFT  0.99995045   +0 35 23.0
 AB5617;UTM  18      - 4,296,539.008   407,935.987   MT  0.99970437   -0 39 52.8
 AB5617
 AB5617!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5617!SPC MD       -   1.00000215  x   0.99995045  =   0.99995260
 AB5617!UTM  18      -   1.00000215  x   0.99970437  =   0.99970652
 AB5617
 AB5617:                Primary Azimuth Mark                     Grid Az
 AB5617:SPC MD       -  GPS 049                                  000 18 38.0
 AB5617:UTM  18      -  GPS 049                                  001 33 53.8
 AB5617
 AB5617_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0793596539(NAD 83)
 AB5617
 AB5617|---------------------------------------------------------------------|
 AB5617| PID    Reference Object                     Distance      Geod. Az  |
 AB5617|                                                           dddmmss.s |
 AB5617| AB5655 GPS 049                             APPROX. 1.8 KM 0005401.0 |
 AB5617| AB5618 GPS 012                             403.885 METERS 1812040.9 |
 AB5617|---------------------------------------------------------------------|
 AB5617
 AB5617                          SUPERSEDED SURVEY CONTROL
 AB5617
 AB5617  NAD 83(2007)-  38 48 46.14091(N)    076 03 37.42155(W) AD(2002.00) 0
 AB5617  ELLIP H (02/10/07)  -13.678  (m)                       GP(2002.00)    
 AB5617  NAD 83(1991)-  38 48 46.14086(N)    076 03 37.42121(W) AD(       ) A
 AB5617  ELLIP H (02/12/02)  -13.677  (m)                       GP(       ) 4 1
 AB5617  NAD 83(1991)-  38 48 46.14118(N)    076 03 37.42229(W) AD(       ) 1
 AB5617  ELLIP H (08/02/96)  -13.661  (m)                       GP(       ) 3 1
 AB5617  NAVD 88              20.92   (m)           68.6    (f) LEVELING    3  
 AB5617  NAVD 88 (08/02/96)   20.92   (m)  GEOID93  model used  GPS OBS        
 AB5617
 AB5617.Superseded values are not recommended for survey control.
 AB5617
 AB5617.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5617.See file dsdata.pdf to determine how the superseded data were derived.
 AB5617
 AB5617_MARKER: DD = SURVEY DISK
 AB5617_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5617_STAMPING: NO. GPS 011
 AB5617_MARK LOGO: MD0480
 AB5617_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5617_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5617+STABILITY: SURFACE MOTION
 AB5617_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5617+SATELLITE: SATELLITE OBSERVATIONS - January 06, 2006
 AB5617
 AB5617  HISTORY     - Date     Condition        Report By
 AB5617  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5617  HISTORY     - 19980629 GOOD             NGS
 AB5617  HISTORY     - 19991007 GOOD             MDSHA
 AB5617  HISTORY     - 19991018 GOOD             NGS
 AB5617  HISTORY     - 20000327 GOOD             MDSHA
 AB5617  HISTORY     - 20020221 GOOD             USPSQD
 AB5617  HISTORY     - 20020624 GOOD             MDSHA
 AB5617  HISTORY     - 20060106 GOOD             GEOMET
 AB5617
 AB5617                          STATION DESCRIPTION
 AB5617
 AB5617'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5617'THE STATION IS LOCATED ABOUT 2.75 MI (4.43 KM) NORTHEAST OF THE CENTER
 AB5617'OF EASTON.
 AB5617'
 AB5617'TO REACH THE STATION FROM THE INTERSECTION OF RT 50 AND RT 309
 AB5617'(CORDOVA ROAD), GO NORTH ON RT 50 FOR 0.15 MI (0.24 KM) TO THE
 AB5617'INTERSECTION WITH BLACK DOG ALLEY ON THE RIGHT AND AIRPORT ROAD AND
 AB5617'THE STATION ON THE LEFT.
 AB5617'
 AB5617'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5617'MONUMENT FLUSH WITH THE GROUND, 99.0 FT (30.2 M) EAST OF THE
 AB5617'CENTERLINE OF RT 662, 41.0 FT (12.5 M) EAST OF AN ELECTRIC COMPANY
 AB5617'MANHOLE, 24.45 FT (7.45 M) SOUTHWEST OF THE EASTON AIRPORT SIGN AND
 AB5617'49.1 FT (15.0 M) NORTH OF THE CENTERLINE OF AIRPORT ROAD.
 AB5617
 AB5617                          STATION RECOVERY (1998)
 AB5617
 AB5617'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (AJL)
 AB5617'RECOVERED AS DESCRIBED.  THIS STATION HAS BEEN SELECTED AS A SECONDARY
 AB5617'AIRPORT CONTROL STATION (SACS) .
 AB5617
 AB5617                          STATION RECOVERY (1999)
 AB5617
 AB5617'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5617'RECOVERED AS DESCRIBED.
 AB5617
 AB5617                          STATION RECOVERY (1999)
 AB5617
 AB5617'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (AJL)
 AB5617'RECOVERED AS DESCRIBED.
 AB5617
 AB5617                          STATION RECOVERY (2000)
 AB5617
 AB5617'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5617'RECOVERED AS DESCRIBED.
 AB5617
 AB5617                          STATION RECOVERY (2002)
 AB5617
 AB5617'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5617'RECOVERED IN GOOD CONDITION.
 AB5617
 AB5617                          STATION RECOVERY (2002)
 AB5617
 AB5617'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 AB5617'RECOVERED AS DESCRIBED.
 AB5617
 AB5617                          STATION RECOVERY (2006)
 AB5617
 AB5617'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2006 (KRO)
 AB5617'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5618 ***********************************************************************
 AB5618  DESIGNATION -  GPS 012
 AB5618  PID         -  AB5618
 AB5618  STATE/COUNTY-  MD/TALBOT
 AB5618  COUNTRY     -  US
 AB5618  USGS QUAD   -  EASTON (2016)
 AB5618
 AB5618                         *CURRENT SURVEY CONTROL
 AB5618  ______________________________________________________________________
 AB5618* NAD 83(2011) POSITION- 38 48 33.04671(N) 076 03 37.81368(W)   ADJUSTED
 AB5618* NAD 83(2011) ELLIP HT-   -13.718 (meters)        (06/27/12)   ADJUSTED
 AB5618* NAD 83(2011) EPOCH   -  2010.00
 AB5618* NAVD 88 ORTHO HEIGHT -    20.916 (meters)       68.62  (feet) ADJUSTED
 AB5618  ______________________________________________________________________
 AB5618  GEOID HEIGHT    -        -34.621 (meters)                     GEOID18
 AB5618  NAD 83(2011) X  -  1,198,853.640 (meters)                     COMP
 AB5618  NAD 83(2011) Y  - -4,830,062.296 (meters)                     COMP
 AB5618  NAD 83(2011) Z  -  3,975,823.455 (meters)                     COMP
 AB5618  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 AB5618  DYNAMIC HEIGHT  -         20.903 (meters)       68.58  (feet) COMP
 AB5618  MODELED GRAVITY -    980,039.9   (mgal)                       NAVD 88
 AB5618
 AB5618  VERT ORDER      -  SECOND    CLASS I
 AB5618
 AB5618  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5618  Standards:
 AB5618         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5618            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5618  -------------------------------------------------------------------
 AB5618  NETWORK    0.37   0.53           0.16   0.14   0.27      0.02430570
 AB5618  -------------------------------------------------------------------
 AB5618  Click here for local accuracies and other accuracy information.
 AB5618
 AB5618.The horizontal coordinates were established by GPS observations
 AB5618.and adjusted by the National Geodetic Survey in June 2012.
 AB5618
 AB5618.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5618.been affixed to the stable North American tectonic plate. See 
 AB5618.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5618
 AB5618.The horizontal coordinates are valid at the epoch date displayed above
 AB5618.which is a decimal equivalence of Year/Month/Day.
 AB5618
 AB5618.The orthometric height was determined by differential leveling and
 AB5618.adjusted by the NATIONAL GEODETIC SURVEY
 AB5618.in September 2004.
 AB5618
 AB5618.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5618.GEOID18 height accuracy estimate available here.
 AB5618
 AB5618.Click photographs - Photos may exist for this station.
 AB5618
 AB5618.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5618
 AB5618.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5618
 AB5618.The ellipsoidal height was determined by GPS observations
 AB5618.and is referenced to NAD 83.
 AB5618
 AB5618.The dynamic height is computed by dividing the NAVD 88
 AB5618.geopotential number by the normal gravity value computed on the
 AB5618.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5618.degrees latitude (g = 980.6199 gals.).
 AB5618
 AB5618.The modeled gravity was interpolated from observed gravity values.
 AB5618
 AB5618. The following values were computed from the NAD 83(2011) position.
 AB5618
 AB5618;                    North         East     Units Scale Factor Converg.
 AB5618;SPC MD       -   127,243.477   481,597.847   MT  0.99995052   +0 35 22.8
 AB5618;SPC MD       -   417,464.64  1,580,042.27   sFT  0.99995052   +0 35 22.8
 AB5618;UTM  18      - 4,296,135.491   407,921.830   MT  0.99970440   -0 39 52.9
 AB5618
 AB5618!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5618!SPC MD       -   1.00000215  x   0.99995052  =   0.99995267
 AB5618!UTM  18      -   1.00000215  x   0.99970440  =   0.99970655
 AB5618
 AB5618:                Primary Azimuth Mark                     Grid Az
 AB5618:SPC MD       -  GPS 011                                  000 45 17.8
 AB5618:UTM  18      -  GPS 011                                  002 00 33.5
 AB5618
 AB5618_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0792196135(NAD 83)
 AB5618
 AB5618|---------------------------------------------------------------------|
 AB5618| PID    Reference Object                     Distance      Geod. Az  |
 AB5618|                                                           dddmmss.s |
 AB5618| AB5617 GPS 011                             403.885 METERS 0012040.6 |
 AB5618|---------------------------------------------------------------------|
 AB5618
 AB5618                          SUPERSEDED SURVEY CONTROL
 AB5618
 AB5618  NAD 83(2007)-  38 48 33.04695(N)    076 03 37.81440(W) AD(2002.00) 0
 AB5618  ELLIP H (02/10/07)  -13.686  (m)                       GP(2002.00)    
 AB5618  ELLIP H (08/30/02)  -13.685  (m)                       GP(       ) 4 2
 AB5618  NAD 83(1991)-  38 48 33.04736(N)    076 03 37.81485(W) AD(       ) 1
 AB5618  ELLIP H (08/02/96)  -13.661  (m)                       GP(       ) 3 1
 AB5618  NAVD 88 (08/02/96)   20.9    (m)  GEOID93  model used  GPS OBS        
 AB5618
 AB5618.Superseded values are not recommended for survey control.
 AB5618
 AB5618.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5618.See file dsdata.pdf to determine how the superseded data were derived.
 AB5618
 AB5618_MARKER: DD = SURVEY DISK
 AB5618_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5618_STAMPING: NO. GPS 012
 AB5618_MARK LOGO: MD0480
 AB5618_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5618_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5618+STABILITY: SURFACE MOTION
 AB5618_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5618+SATELLITE: SATELLITE OBSERVATIONS - February 21, 2002
 AB5618
 AB5618  HISTORY     - Date     Condition        Report By
 AB5618  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5618  HISTORY     - 19991007 GOOD             MDSHA
 AB5618  HISTORY     - 20020221 GOOD             USPSQD
 AB5618
 AB5618                          STATION DESCRIPTION
 AB5618
 AB5618'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5618'THE STATION IS LOCATED ABOUT 2.4 MI (3.9 KM) NORTHEAST OF THE CENTER
 AB5618'OF EASTON.
 AB5618'
 AB5618'TO REACH THE STATION FROM THE INTERSECTION OF RT 50 AND RT 309
 AB5618'(CORDOVA ROAD), GO NORTH ON RT 50 FOR 0.15 MI (0.24 KM) TO THE
 AB5618'INTERSECTION WITH BALCK DOG ALLEY ON THE RIGHT AND AIRPORT ROAD ON THE
 AB5618'LEFT.  MAKE A U TURN AND GO SOUTH ON RT 50 FOR 0.25 TO THE ENTRANCE TO
 AB5618'A REST AREA AND THE STATION ON THE RIGHT.
 AB5618'
 AB5618'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5618'MONUMENT FLUSH WITH THE GROUND, 73.4 FT (22.4 M) EAST OF THE
 AB5618'CENTERLINE OF RT 662, 31.0 FT (9.4 M) SOUTHWEST OF TELEPHONE
 AB5618'PEDESTAL NO. 1245 AND 38.8 FT (11.8 M) NORTHWEST OF THE CENTERLINE OF
 AB5618'THE ENTRANCE ROAD.
 AB5618
 AB5618                          STATION RECOVERY (1999)
 AB5618
 AB5618'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5618'RECOVERED AS DESCRIBED.
 AB5618
 AB5618                          STATION RECOVERY (2002)
 AB5618
 AB5618'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5618'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5619 ***********************************************************************
 AB5619  DESIGNATION -  GPS 013
 AB5619  PID         -  AB5619
 AB5619  STATE/COUNTY-  MD/TALBOT
 AB5619  COUNTRY     -  US
 AB5619  USGS QUAD   -  EASTON (2016)
 AB5619
 AB5619                         *CURRENT SURVEY CONTROL
 AB5619  ______________________________________________________________________
 AB5619* NAD 83(2011) POSITION- 38 48 42.97284(N) 076 01 47.65385(W)   ADJUSTED
 AB5619* NAD 83(2011) ELLIP HT-   -21.395 (meters)        (06/27/12)   ADJUSTED
 AB5619* NAD 83(2011) EPOCH   -  2010.00
 AB5619* NAVD 88 ORTHO HEIGHT -    13.256 (meters)       43.49  (feet) ADJUSTED
 AB5619  ______________________________________________________________________
 AB5619  GEOID HEIGHT    -        -34.667 (meters)                     GEOID18
 AB5619  NAD 83(2011) X  -  1,201,385.303 (meters)                     COMP
 AB5619  NAD 83(2011) Y  - -4,829,229.365 (meters)                     COMP
 AB5619  NAD 83(2011) Z  -  3,976,057.154 (meters)                     COMP
 AB5619  LAPLACE CORR    -         -3.29  (seconds)                    DEFLEC18
 AB5619  DYNAMIC HEIGHT  -         13.248 (meters)       43.46  (feet) COMP
 AB5619  MODELED GRAVITY -    980,039.3   (mgal)                       NAVD 88
 AB5619
 AB5619  VERT ORDER      -  SECOND    CLASS I
 AB5619
 AB5619  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5619  Standards:
 AB5619         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5619            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5619  -------------------------------------------------------------------
 AB5619  NETWORK    0.58   1.23           0.26   0.21   0.63     -0.11144475
 AB5619  -------------------------------------------------------------------
 AB5619  Click here for local accuracies and other accuracy information.
 AB5619
 AB5619.The horizontal coordinates were established by GPS observations
 AB5619.and adjusted by the National Geodetic Survey in June 2012.
 AB5619
 AB5619.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5619.been affixed to the stable North American tectonic plate. See 
 AB5619.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5619
 AB5619.The horizontal coordinates are valid at the epoch date displayed above
 AB5619.which is a decimal equivalence of Year/Month/Day.
 AB5619
 AB5619.The orthometric height was determined by differential leveling and
 AB5619.adjusted by the NATIONAL GEODETIC SURVEY
 AB5619.in September 2004.
 AB5619
 AB5619.No vertical observational check was made to the station.
 AB5619
 AB5619.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5619.GEOID18 height accuracy estimate available here.
 AB5619
 AB5619.Click photographs - Photos may exist for this station.
 AB5619
 AB5619.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5619
 AB5619.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5619
 AB5619.The ellipsoidal height was determined by GPS observations
 AB5619.and is referenced to NAD 83.
 AB5619
 AB5619.The dynamic height is computed by dividing the NAVD 88
 AB5619.geopotential number by the normal gravity value computed on the
 AB5619.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5619.degrees latitude (g = 980.6199 gals.).
 AB5619
 AB5619.The modeled gravity was interpolated from observed gravity values.
 AB5619
 AB5619. The following values were computed from the NAD 83(2011) position.
 AB5619
 AB5619;                    North         East     Units Scale Factor Converg.
 AB5619;SPC MD       -   127,577.330   484,252.187   MT  0.99995047   +0 36 31.9
 AB5619;SPC MD       -   418,559.96  1,588,750.72   sFT  0.99995047   +0 36 31.9
 AB5619;UTM  18      - 4,296,411.088   410,582.179   MT  0.99969846   -0 38 44.0
 AB5619
 AB5619!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5619!SPC MD       -   1.00000336  x   0.99995047  =   0.99995383
 AB5619!UTM  18      -   1.00000336  x   0.99969846  =   0.99970182
 AB5619
 AB5619:                Primary Azimuth Mark                     Grid Az
 AB5619:SPC MD       -  GPS 047                                  324 29 40.5
 AB5619:UTM  18      -  GPS 047                                  325 44 56.4
 AB5619
 AB5619_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1058296411(NAD 83)
 AB5619
 AB5619|---------------------------------------------------------------------|
 AB5619| PID    Reference Object                     Distance      Geod. Az  |
 AB5619|                                                           dddmmss.s |
 AB5619| AB5620 GPS 014                             236.305 METERS 06436     |
 AB5619| AB5653 GPS 047                             APPROX. 1.5 KM 3250612.4 |
 AB5619|---------------------------------------------------------------------|
 AB5619
 AB5619                          SUPERSEDED SURVEY CONTROL
 AB5619
 AB5619  NAD 83(2007)-  38 48 42.97308(N)    076 01 47.65456(W) AD(2002.00) 0
 AB5619  ELLIP H (02/10/07)  -21.364  (m)                       GP(2002.00)    
 AB5619  ELLIP H (08/30/02)  -21.384  (m)                       GP(       ) 4 2
 AB5619  NAD 83(1991)-  38 48 42.97386(N)    076 01 47.65494(W) AD(       ) 1
 AB5619  ELLIP H (08/02/96)  -21.299  (m)                       GP(       ) 3 1
 AB5619  NAVD 88 (08/02/96)   13.3    (m)  GEOID93  model used  GPS OBS        
 AB5619
 AB5619.Superseded values are not recommended for survey control.
 AB5619
 AB5619.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5619.See file dsdata.pdf to determine how the superseded data were derived.
 AB5619
 AB5619_MARKER: DD = SURVEY DISK
 AB5619_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5619_STAMPING: NO. GPS 013
 AB5619_MARK LOGO: MD0480
 AB5619_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5619_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5619+STABILITY: SURFACE MOTION
 AB5619_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5619+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5619
 AB5619  HISTORY     - Date     Condition        Report By
 AB5619  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5619  HISTORY     - 20011012 GOOD             MDSHA
 AB5619  HISTORY     - 20020310 GOOD             USPSQD
 AB5619
 AB5619                          STATION DESCRIPTION
 AB5619
 AB5619'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5619'THE STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) NORTHEAST OF THE CENTER
 AB5619'OF EASTON.
 AB5619'
 AB5619'TO REACH THE STATION FROM THE INTERSECTION OF RT 50 AND RT 309
 AB5619'(CORDOVA ROAD), GO NORTHEAST ON RT 309 FOR 1.35 MI (2.17 KM) TO THE
 AB5619'INTERSECTION WITH OLD CORDOVA ROAD ON THE LEFT AND KLONDIKE ROAD ON
 AB5619'THE RIGHT.  TURN RIGHT ON KLONDIKE ROAD AND GO SOUTHEAST FOR 0.95 MI
 AB5619'(1.53 KM) TO THE INTERSECTION WITH CHAPEL ROAD AND THE STATION ON THE
 AB5619'LEFT.
 AB5619'
 AB5619'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5619'MONUMENT FLUSH WITH THE GROUND, 67.2 FT (20.5 M) NORTHEAST OF
 AB5619'UTILITY POLE NO. 333-64, 28.0 FT (8.5 M) NORTH-NORTHEAST OF THE
 AB5619'CENTERLINE OF KLONDIKE ROAD, 71.4 FT (21.8 M) NORTH OF UTILITY POLE
 AB5619'NO. 333-65, 29.0 FT (8.8 M) NORTHWEST OF THE CENTERLINE OF CHAPEL ROAD
 AB5619'AND 52.5 FT (16.0 M) NORTHWEST OF TELEPHONE PEDESTAL NO. 53.
 AB5619
 AB5619                          STATION RECOVERY (2001)
 AB5619
 AB5619'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AB5619'RECOVERED AS DESCRIBED.
 AB5619
 AB5619                          STATION RECOVERY (2002)
 AB5619
 AB5619'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5619'REMAINS OF SHREDDED CARSONITE POST FOUND IN THE VICINITY. REFERENCED
 AB5619'TELEPHONE NUMBER 53 HAS BEEN REMOVED.  THE MARK IS SUBJECT TO DAMAGE
 AB5619'FROM DRAINAGE DITCH MAINTENANCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5620 ***********************************************************************
 AB5620  DESIGNATION -  GPS 014
 AB5620  PID         -  AB5620
 AB5620  STATE/COUNTY-  MD/TALBOT
 AB5620  COUNTRY     -  US
 AB5620  USGS QUAD   -  EASTON (2016)
 AB5620
 AB5620                         *CURRENT SURVEY CONTROL
 AB5620  ______________________________________________________________________
 AB5620* NAD 83(2011) POSITION- 38 48 46.25901(N) 076 01 38.80566(W)   ADJUSTED
 AB5620* NAD 83(2011) ELLIP HT-   -18.701 (meters)        (06/27/12)   ADJUSTED
 AB5620* NAD 83(2011) EPOCH   -  2010.00
 AB5620* NAVD 88 ORTHO HEIGHT -    15.958 (meters)       52.36  (feet) ADJUSTED
 AB5620  ______________________________________________________________________
 AB5620  GEOID HEIGHT    -        -34.669 (meters)                     GEOID18
 AB5620  NAD 83(2011) X  -  1,201,577.633 (meters)                     COMP
 AB5620  NAD 83(2011) Y  - -4,829,118.228 (meters)                     COMP
 AB5620  NAD 83(2011) Z  -  3,976,137.802 (meters)                     COMP
 AB5620  LAPLACE CORR    -         -3.29  (seconds)                    DEFLEC18
 AB5620  DYNAMIC HEIGHT  -         15.949 (meters)       52.33  (feet) COMP
 AB5620  MODELED GRAVITY -    980,039.3   (mgal)                       NAVD 88
 AB5620
 AB5620  VERT ORDER      -  SECOND    CLASS I
 AB5620
 AB5620  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5620  Standards:
 AB5620         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5620            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5620  -------------------------------------------------------------------
 AB5620  NETWORK    0.50   0.94           0.22   0.19   0.48     -0.03861863
 AB5620  -------------------------------------------------------------------
 AB5620  Click here for local accuracies and other accuracy information.
 AB5620
 AB5620.The horizontal coordinates were established by GPS observations
 AB5620.and adjusted by the National Geodetic Survey in June 2012.
 AB5620
 AB5620.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5620.been affixed to the stable North American tectonic plate. See 
 AB5620.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5620
 AB5620.The horizontal coordinates are valid at the epoch date displayed above
 AB5620.which is a decimal equivalence of Year/Month/Day.
 AB5620
 AB5620.The orthometric height was determined by differential leveling and
 AB5620.adjusted by the NATIONAL GEODETIC SURVEY
 AB5620.in September 2004.
 AB5620
 AB5620.No vertical observational check was made to the station.
 AB5620
 AB5620.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5620.GEOID18 height accuracy estimate available here.
 AB5620
 AB5620.Click photographs - Photos may exist for this station.
 AB5620
 AB5620.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5620
 AB5620.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5620
 AB5620.The ellipsoidal height was determined by GPS observations
 AB5620.and is referenced to NAD 83.
 AB5620
 AB5620.The dynamic height is computed by dividing the NAVD 88
 AB5620.geopotential number by the normal gravity value computed on the
 AB5620.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5620.degrees latitude (g = 980.6199 gals.).
 AB5620
 AB5620.The modeled gravity was interpolated from observed gravity values.
 AB5620
 AB5620. The following values were computed from the NAD 83(2011) position.
 AB5620
 AB5620;                    North         East     Units Scale Factor Converg.
 AB5620;SPC MD       -   127,680.925   484,464.560   MT  0.99995045   +0 36 37.5
 AB5620;SPC MD       -   418,899.83  1,589,447.48   sFT  0.99995045   +0 36 37.5
 AB5620;UTM  18      - 4,296,509.984   410,796.715   MT  0.99969798   -0 38 38.5
 AB5620
 AB5620!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5620!SPC MD       -   1.00000293  x   0.99995045  =   0.99995338
 AB5620!UTM  18      -   1.00000293  x   0.99969798  =   0.99970091
 AB5620
 AB5620_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1079696509(NAD 83)
 AB5620
 AB5620|---------------------------------------------------------------------|
 AB5620| PID    Reference Object                     Distance      Geod. Az  |
 AB5620|                                                           dddmmss.s |
 AB5620| AB5619 GPS 013                             236.305 METERS 24436     |
 AB5620|---------------------------------------------------------------------|
 AB5620
 AB5620                          SUPERSEDED SURVEY CONTROL
 AB5620
 AB5620  NAD 83(2007)-  38 48 46.25924(N)    076 01 38.80637(W) AD(2002.00) 0
 AB5620  ELLIP H (02/10/07)  -18.670  (m)                       GP(2002.00)    
 AB5620  ELLIP H (08/30/02)  -18.687  (m)                       GP(       ) 4 2
 AB5620  NAD 83(1991)-  38 48 46.26022(N)    076 01 38.80668(W) AD(       ) 1
 AB5620  ELLIP H (08/02/96)  -18.600  (m)                       GP(       ) 3 1
 AB5620  NAVD 88 (08/02/96)   16.0    (m)  GEOID93  model used  GPS OBS        
 AB5620
 AB5620.Superseded values are not recommended for survey control.
 AB5620
 AB5620.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5620.See file dsdata.pdf to determine how the superseded data were derived.
 AB5620
 AB5620_MARKER: DD = SURVEY DISK
 AB5620_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5620_STAMPING: NO. GPS-014
 AB5620_MARK LOGO: MD0480
 AB5620_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5620_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5620+STABILITY: SURFACE MOTION
 AB5620_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5620+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5620
 AB5620  HISTORY     - Date     Condition        Report By
 AB5620  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5620  HISTORY     - 20011012 GOOD             MDSHA
 AB5620  HISTORY     - 20020310 GOOD             USPSQD
 AB5620
 AB5620                          STATION DESCRIPTION
 AB5620
 AB5620'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5620'THE STATION IS LOCATED ABOUT 3.75 MI (6.03 KM) NORTHEAST OF THE CENTER
 AB5620'OF EASTON.
 AB5620'
 AB5620'TO REACH THE STATION FROM THE INTERSECTION OF RT 50 AND RT 309
 AB5620'(CORDOVA ROAD), GO NORTHEAST ON RT 309 FOR 1.35 MI (2.17 KM) TO THE
 AB5620'INTERSECTION WITH OLD CORDOVA ROAD ON THE LEFT AND KLONDIKE ROAD ON
 AB5620'THE RIGHT.  TURN RIGHT ON KLONDIKE ROAD AND GO SOUTHEAST FOR 0.95 MI
 AB5620'(1.53 KM) TO THE INTERSECTION WITH CHAPEL ROAD.  TURN LEFT ON CHAPEL
 AB5620'ROAD GO NORTHEAST FOR 0.2 MI (0.3 KM) TO THE STATION ON THE RIGHT.
 AB5620'
 AB5620'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5620'MONUMENT FLUSH WITH THE GROUND, 121.0 FT (36.9 M) EAST OF UTILITY POLE
 AB5620'NO.333-68, 19.2 FT (5.9 M) SOUTHEAST OF THE CENTERLINE OF CHAPEL ROAD,
 AB5620'254.0 FT (77.4 M) SOUTHWEST OF UTILITY POLE NO. 56 AND 116.0 FT
 AB5620'(35.4 M) NORTHEAST OF UTILITY POLE NO. 55.
 AB5620
 AB5620                          STATION RECOVERY (2001)
 AB5620
 AB5620'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AB5620'RECOVERED AS DESCRIBED.
 AB5620
 AB5620                          STATION RECOVERY (2002)
 AB5620
 AB5620'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5620'REMAINS OF SHREDDED CARSONITE POST FOUND IN THE VICINITY.   THE MARK
 AB5620'IS SUBJECT TO DAMAGE FROM DRAINAGE DITCH MAINTENANCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5622 ***********************************************************************
 AB5622  DESIGNATION -  GPS 016
 AB5622  PID         -  AB5622
 AB5622  STATE/COUNTY-  MD/TALBOT
 AB5622  COUNTRY     -  US
 AB5622  USGS QUAD   -  EASTON (2016)
 AB5622
 AB5622                         *CURRENT SURVEY CONTROL
 AB5622  ______________________________________________________________________
 AB5622* NAD 83(2011) POSITION- 38 47 22.69993(N) 076 02 20.62119(W)   ADJUSTED
 AB5622* NAD 83(2011) ELLIP HT-   -14.260 (meters)        (06/27/12)   ADJUSTED
 AB5622* NAD 83(2011) EPOCH   -  2010.00
 AB5622* NAVD 88 ORTHO HEIGHT -    20.438 (meters)       67.05  (feet) ADJUSTED
 AB5622  ______________________________________________________________________
 AB5622  GEOID HEIGHT    -        -34.698 (meters)                     GEOID18
 AB5622  NAD 83(2011) X  -  1,200,988.987 (meters)                     COMP
 AB5622  NAD 83(2011) Y  - -4,830,931.980 (meters)                     COMP
 AB5622  NAD 83(2011) Z  -  3,974,132.524 (meters)                     COMP
 AB5622  LAPLACE CORR    -         -3.22  (seconds)                    DEFLEC18
 AB5622  DYNAMIC HEIGHT  -         20.426 (meters)       67.01  (feet) COMP
 AB5622  MODELED GRAVITY -    980,036.9   (mgal)                       NAVD 88
 AB5622
 AB5622  VERT ORDER      -  SECOND    CLASS I
 AB5622
 AB5622  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5622  Standards:
 AB5622         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5622            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5622  -------------------------------------------------------------------
 AB5622  NETWORK    0.44   0.86           0.19   0.17   0.44     -0.05492037
 AB5622  -------------------------------------------------------------------
 AB5622  Click here for local accuracies and other accuracy information.
 AB5622
 AB5622.The horizontal coordinates were established by GPS observations
 AB5622.and adjusted by the National Geodetic Survey in June 2012.
 AB5622
 AB5622.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5622.been affixed to the stable North American tectonic plate. See 
 AB5622.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5622
 AB5622.The horizontal coordinates are valid at the epoch date displayed above
 AB5622.which is a decimal equivalence of Year/Month/Day.
 AB5622
 AB5622.The orthometric height was determined by differential leveling and
 AB5622.adjusted by the NATIONAL GEODETIC SURVEY
 AB5622.in September 2004.
 AB5622
 AB5622.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5622.GEOID18 height accuracy estimate available here.
 AB5622
 AB5622.Click photographs - Photos may exist for this station.
 AB5622
 AB5622.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5622
 AB5622.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5622
 AB5622.The ellipsoidal height was determined by GPS observations
 AB5622.and is referenced to NAD 83.
 AB5622
 AB5622.The dynamic height is computed by dividing the NAVD 88
 AB5622.geopotential number by the normal gravity value computed on the
 AB5622.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5622.degrees latitude (g = 980.6199 gals.).
 AB5622
 AB5622.The modeled gravity was interpolated from observed gravity values.
 AB5622
 AB5622. The following values were computed from the NAD 83(2011) position.
 AB5622
 AB5622;                    North         East     Units Scale Factor Converg.
 AB5622;SPC MD       -   125,093.836   483,482.940   MT  0.99995097   +0 36 11.2
 AB5622;SPC MD       -   410,412.03  1,586,226.95   sFT  0.99995097   +0 36 11.2
 AB5622;UTM  18      - 4,293,945.647   409,758.962   MT  0.99970028   -0 39 03.5
 AB5622
 AB5622!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5622!SPC MD       -   1.00000224  x   0.99995097  =   0.99995321
 AB5622!UTM  18      -   1.00000224  x   0.99970028  =   0.99970252
 AB5622
 AB5622_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0975893945(NAD 83)
 AB5622
 AB5622|---------------------------------------------------------------------|
 AB5622| PID    Reference Object                     Distance      Geod. Az  |
 AB5622|                                                           dddmmss.s |
 AB5622| AB5621 GPS 015                             336.850 METERS 04926     |
 AB5622|---------------------------------------------------------------------|
 AB5622
 AB5622                          SUPERSEDED SURVEY CONTROL
 AB5622
 AB5622  NAD 83(2007)-  38 47 22.70016(N)    076 02 20.62189(W) AD(2002.00) 0
 AB5622  ELLIP H (02/10/07)  -14.228  (m)                       GP(2002.00)    
 AB5622  ELLIP H (08/30/02)  -14.245  (m)                       GP(       ) 4 2
 AB5622  NAD 83(1991)-  38 47 22.70108(N)    076 02 20.62230(W) AD(       ) 1
 AB5622  ELLIP H (08/02/96)  -14.155  (m)                       GP(       ) 3 1
 AB5622  NAVD 88 (08/02/96)   20.5    (m)  GEOID93  model used  GPS OBS        
 AB5622
 AB5622.Superseded values are not recommended for survey control.
 AB5622
 AB5622.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5622.See file dsdata.pdf to determine how the superseded data were derived.
 AB5622
 AB5622_MARKER: DD = SURVEY DISK
 AB5622_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5622_STAMPING: NO. GPS 016
 AB5622_MARK LOGO: MD0480
 AB5622_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5622_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5622+STABILITY: SURFACE MOTION
 AB5622_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5622+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5622
 AB5622  HISTORY     - Date     Condition        Report By
 AB5622  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5622  HISTORY     - 19991104 GOOD             MDSHA
 AB5622  HISTORY     - 20020310 GOOD             USPSQD
 AB5622
 AB5622                          STATION DESCRIPTION
 AB5622
 AB5622'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5622'THE STATION IS LOCATED ABOUT 2.25 MI (3.62 KM) NORTHEAST OF EASTON.
 AB5622'
 AB5622'TO REACH THE STATION FROM THE INTERSECTION OF RT 50 AND RT 328
 AB5622'(MATHEWSTOWN RD), GO NORTHWEST ON MD RT 328 FOR 1.4 MI (2.3 KM) TO THE
 AB5622'STATION ON THE RIGHT.
 AB5622'
 AB5622'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5622'MONUMENT FLUSH WITH THE GROUND, 28.0 FT (8.5 M) SOUTHEAST OF
 AB5622'THE CENTERLINE OF RT 328, 205.7 FT (62.7 M) NORTHEAST OF AN UNNUMBERED
 AB5622'UTILITY POLE, 50.0 FT (15.2 M) SOUTHWEST OF UTILITY POLE NO. BEM-73-75
 AB5622'AND 203.5 FT (62.0 M) SOUTHWEST OF THE CENTERLINE OF BEANS ROAD.
 AB5622
 AB5622                          STATION RECOVERY (1999)
 AB5622
 AB5622'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5622'RECOVERED AS DESCRIBED.
 AB5622
 AB5622                          STATION RECOVERY (2002)
 AB5622
 AB5622'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5622'REMAINS OF A SHREDDED CARSONITE POST WERE FOUND IN THE VICINITY.
 AB5622'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5623 ***********************************************************************
 AB5623  DESIGNATION -  GPS 017
 AB5623  PID         -  AB5623
 AB5623  STATE/COUNTY-  MD/TALBOT
 AB5623  COUNTRY     -  US
 AB5623  USGS QUAD   -  EASTON (2016)
 AB5623
 AB5623                         *CURRENT SURVEY CONTROL
 AB5623  ______________________________________________________________________
 AB5623* NAD 83(2011) POSITION- 38 46 24.24452(N) 076 01 37.27792(W)   ADJUSTED
 AB5623* NAD 83(2011) ELLIP HT-   -19.069 (meters)        (06/27/12)   ADJUSTED
 AB5623* NAD 83(2011) EPOCH   -  2010.00
 AB5623* NAVD 88 ORTHO HEIGHT -    15.687 (meters)       51.47  (feet) ADJUSTED
 AB5623  ______________________________________________________________________
 AB5623  GEOID HEIGHT    -        -34.750 (meters)                     GEOID18
 AB5623  NAD 83(2011) X  -  1,202,275.820 (meters)                     COMP
 AB5623  NAD 83(2011) Y  - -4,831,771.493 (meters)                     COMP
 AB5623  NAD 83(2011) Z  -  3,972,724.348 (meters)                     COMP
 AB5623  LAPLACE CORR    -         -3.29  (seconds)                    DEFLEC18
 AB5623  DYNAMIC HEIGHT  -         15.677 (meters)       51.43  (feet) COMP
 AB5623  MODELED GRAVITY -    980,034.9   (mgal)                       NAVD 88
 AB5623
 AB5623  VERT ORDER      -  SECOND    CLASS I
 AB5623
 AB5623  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5623  Standards:
 AB5623         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5623            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5623  -------------------------------------------------------------------
 AB5623  NETWORK    0.45   0.88           0.19   0.18   0.45      0.01541716
 AB5623  -------------------------------------------------------------------
 AB5623  Click here for local accuracies and other accuracy information.
 AB5623
 AB5623.The horizontal coordinates were established by GPS observations
 AB5623.and adjusted by the National Geodetic Survey in June 2012.
 AB5623
 AB5623.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5623.been affixed to the stable North American tectonic plate. See 
 AB5623.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5623
 AB5623.The horizontal coordinates are valid at the epoch date displayed above
 AB5623.which is a decimal equivalence of Year/Month/Day.
 AB5623
 AB5623.The orthometric height was determined by differential leveling and
 AB5623.adjusted by the NATIONAL GEODETIC SURVEY
 AB5623.in September 2004.
 AB5623
 AB5623.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5623.GEOID18 height accuracy estimate available here.
 AB5623
 AB5623.Click photographs - Photos may exist for this station.
 AB5623
 AB5623.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5623
 AB5623.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5623
 AB5623.The ellipsoidal height was determined by GPS observations
 AB5623.and is referenced to NAD 83.
 AB5623
 AB5623.The dynamic height is computed by dividing the NAVD 88
 AB5623.geopotential number by the normal gravity value computed on the
 AB5623.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5623.degrees latitude (g = 980.6199 gals.).
 AB5623
 AB5623.The modeled gravity was interpolated from observed gravity values.
 AB5623
 AB5623. The following values were computed from the NAD 83(2011) position.
 AB5623
 AB5623;                    North         East     Units Scale Factor Converg.
 AB5623;SPC MD       -   123,302.547   484,548.086   MT  0.99995144   +0 36 38.4
 AB5623;SPC MD       -   404,535.11  1,589,721.51   sFT  0.99995144   +0 36 38.4
 AB5623;UTM  18      - 4,292,131.934   410,784.393   MT  0.99969801   -0 38 35.5
 AB5623
 AB5623!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5623!SPC MD       -   1.00000299  x   0.99995144  =   0.99995443
 AB5623!UTM  18      -   1.00000299  x   0.99969801  =   0.99970100
 AB5623
 AB5623_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1078492131(NAD 83)
 AB5623
 AB5623|---------------------------------------------------------------------|
 AB5623| PID    Reference Object                     Distance      Geod. Az  |
 AB5623|                                                           dddmmss.s |
 AB5623| AB5624 GPS 018                             359.396 METERS 26322     |
 AB5623|---------------------------------------------------------------------|
 AB5623
 AB5623                          SUPERSEDED SURVEY CONTROL
 AB5623
 AB5623  NAD 83(2007)-  38 46 24.24475(N)    076 01 37.27862(W) AD(2002.00) 0
 AB5623  ELLIP H (02/10/07)  -19.038  (m)                       GP(2002.00)    
 AB5623  ELLIP H (08/30/02)  -19.052  (m)                       GP(       ) 4 2
 AB5623  NAD 83(1991)-  38 46 24.24565(N)    076 01 37.27900(W) AD(       ) 1
 AB5623  ELLIP H (08/02/96)  -18.957  (m)                       GP(       ) 3 1
 AB5623  NAVD 88 (08/02/96)   15.7    (m)  GEOID93  model used  GPS OBS        
 AB5623
 AB5623.Superseded values are not recommended for survey control.
 AB5623
 AB5623.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5623.See file dsdata.pdf to determine how the superseded data were derived.
 AB5623
 AB5623_MARKER: DD = SURVEY DISK
 AB5623_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5623_STAMPING: NO.GPS 017
 AB5623_MARK LOGO: MD0480
 AB5623_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5623_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5623+STABILITY: SURFACE MOTION
 AB5623_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5623+SATELLITE: SATELLITE OBSERVATIONS - March 12, 2002
 AB5623
 AB5623  HISTORY     - Date     Condition        Report By
 AB5623  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5623  HISTORY     - 19991025 GOOD             MDSHA
 AB5623  HISTORY     - 20020312 GOOD             USPSQD
 AB5623
 AB5623                          STATION DESCRIPTION
 AB5623
 AB5623'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5623'THE STATION IS LOCATED ABOUT 2.75 MI (4.43 KM) EAST OF EASTON.
 AB5623'
 AB5623'TO REACH FROM THE INTERSECTION OF RT 50 AND MD RT 331 (DOVER ROAD), GO
 AB5623'EAST ON MD RT 331 FOR 1.8 MI (2.9 KM) TO THE INTERSECTION WITH DOVER
 AB5623'NECK ROAD AND THE STATION ON THE LEFT.
 AB5623'
 AB5623'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5623'MONUMENT FLUSH WITH THE GROUND, 78.1 FT (23.8 M) EAST OF UTILITY POLE
 AB5623'NO.BED-94-156, 85.9 FT (26.2 M) WEST OF UTILITY POLE NO. BED-94-157
 AB5623'AND 39.6 FT (12.1 M) NORTH OF THE INTERSECTION OF THE ROADS.
 AB5623
 AB5623                          STATION RECOVERY (1999)
 AB5623
 AB5623'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5623'RECOVERED AS DESCRIBED.
 AB5623
 AB5623                          STATION RECOVERY (2002)
 AB5623
 AB5623'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5623'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5624 ***********************************************************************
 AB5624  DESIGNATION -  GPS 018
 AB5624  PID         -  AB5624
 AB5624  STATE/COUNTY-  MD/TALBOT
 AB5624  COUNTRY     -  US
 AB5624  USGS QUAD   -  EASTON (2016)
 AB5624
 AB5624                         *CURRENT SURVEY CONTROL
 AB5624  ______________________________________________________________________
 AB5624* NAD 83(2011) POSITION- 38 46 22.89806(N) 076 01 52.06650(W)   ADJUSTED
 AB5624* NAD 83(2011) ELLIP HT-   -15.187 (meters)        (06/27/12)   ADJUSTED
 AB5624* NAD 83(2011) EPOCH   -  2010.00
 AB5624* NAVD 88 ORTHO HEIGHT -    19.562 (meters)       64.18  (feet) ADJUSTED
 AB5624  ______________________________________________________________________
 AB5624  GEOID HEIGHT    -        -34.744 (meters)                     GEOID18
 AB5624  NAD 83(2011) X  -  1,201,936.400 (meters)                     COMP
 AB5624  NAD 83(2011) Y  - -4,831,885.849 (meters)                     COMP
 AB5624  NAD 83(2011) Z  -  3,972,694.409 (meters)                     COMP
 AB5624  LAPLACE CORR    -         -3.25  (seconds)                    DEFLEC18
 AB5624  DYNAMIC HEIGHT  -         19.551 (meters)       64.14  (feet) COMP
 AB5624  MODELED GRAVITY -    980,034.9   (mgal)                       NAVD 88
 AB5624
 AB5624  VERT ORDER      -  SECOND    CLASS I
 AB5624
 AB5624  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5624  Standards:
 AB5624         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5624            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5624  -------------------------------------------------------------------
 AB5624  NETWORK    0.54   1.43           0.22   0.22   0.73      0.05200924
 AB5624  -------------------------------------------------------------------
 AB5624  Click here for local accuracies and other accuracy information.
 AB5624
 AB5624.The horizontal coordinates were established by GPS observations
 AB5624.and adjusted by the National Geodetic Survey in June 2012.
 AB5624
 AB5624.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5624.been affixed to the stable North American tectonic plate. See 
 AB5624.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5624
 AB5624.The horizontal coordinates are valid at the epoch date displayed above
 AB5624.which is a decimal equivalence of Year/Month/Day.
 AB5624
 AB5624.The orthometric height was determined by differential leveling and
 AB5624.adjusted by the NATIONAL GEODETIC SURVEY
 AB5624.in September 2004.
 AB5624
 AB5624.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5624.GEOID18 height accuracy estimate available here.
 AB5624
 AB5624.Click photographs - Photos may exist for this station.
 AB5624
 AB5624.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5624
 AB5624.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5624
 AB5624.The ellipsoidal height was determined by GPS observations
 AB5624.and is referenced to NAD 83.
 AB5624
 AB5624.The dynamic height is computed by dividing the NAVD 88
 AB5624.geopotential number by the normal gravity value computed on the
 AB5624.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5624.degrees latitude (g = 980.6199 gals.).
 AB5624
 AB5624.The modeled gravity was interpolated from observed gravity values.
 AB5624
 AB5624. The following values were computed from the NAD 83(2011) position.
 AB5624
 AB5624;                    North         East     Units Scale Factor Converg.
 AB5624;SPC MD       -   123,257.234   484,191.576   MT  0.99995145   +0 36 29.1
 AB5624;SPC MD       -   404,386.44  1,588,551.86   sFT  0.99995145   +0 36 29.1
 AB5624;UTM  18      - 4,292,094.443   410,427.068   MT  0.99969880   -0 38 44.8
 AB5624
 AB5624!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5624!SPC MD       -   1.00000238  x   0.99995145  =   0.99995383
 AB5624!UTM  18      -   1.00000238  x   0.99969880  =   0.99970118
 AB5624
 AB5624_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1042792094(NAD 83)
 AB5624
 AB5624|---------------------------------------------------------------------|
 AB5624| PID    Reference Object                     Distance      Geod. Az  |
 AB5624|                                                           dddmmss.s |
 AB5624| AB5623 GPS 017                             359.396 METERS 08322     |
 AB5624|---------------------------------------------------------------------|
 AB5624
 AB5624                          SUPERSEDED SURVEY CONTROL
 AB5624
 AB5624  NAD 83(2007)-  38 46 22.89829(N)    076 01 52.06720(W) AD(2002.00) 0
 AB5624  ELLIP H (02/10/07)  -15.156  (m)                       GP(2002.00)    
 AB5624  ELLIP H (08/30/02)  -15.161  (m)                       GP(       ) 4 2
 AB5624  NAD 83(1991)-  38 46 22.89911(N)    076 01 52.06760(W) AD(       ) 1
 AB5624  ELLIP H (08/02/96)  -15.083  (m)                       GP(       ) 3 1
 AB5624  NAVD 88 (08/02/96)   19.6    (m)  GEOID93  model used  GPS OBS        
 AB5624
 AB5624.Superseded values are not recommended for survey control.
 AB5624
 AB5624.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5624.See file dsdata.pdf to determine how the superseded data were derived.
 AB5624
 AB5624_MARKER: DD = SURVEY DISK
 AB5624_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5624_STAMPING: NO.GPS 018
 AB5624_MARK LOGO: MD0480
 AB5624_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5624_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5624+STABILITY: SURFACE MOTION
 AB5624_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5624+SATELLITE: SATELLITE OBSERVATIONS - March 12, 2002
 AB5624
 AB5624  HISTORY     - Date     Condition        Report By
 AB5624  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5624  HISTORY     - 19991025 GOOD             MDSHA
 AB5624  HISTORY     - 20020312 GOOD             USPSQD
 AB5624
 AB5624                          STATION DESCRIPTION
 AB5624
 AB5624'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5624'THE STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) EAST OF EASTON.
 AB5624'
 AB5624'TO REACH FROM THE INTERSECTION OF RT 50 AND MD RT 331 (DOVER ROAD), GO
 AB5624'EAST ON MD RT 331 FOR 1.6 MI (2.6 KM) TO THE STATION ON THE LEFT.
 AB5624'
 AB5624'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5624'MONUMENT FLUSH WITH THE GROUND, 62.2 FT (19.0 M) EAST OF
 AB5624'POWER POLE NO. BED-94-143, 87.0 FT (26.5 M) WEST OF POWER POLE
 AB5624'NO. BED-94-144 AND 31.2 FT (9.5 M) NORTH OF THE CENTERLINE OF RT 331.
 AB5624
 AB5624                          STATION RECOVERY (1999)
 AB5624
 AB5624'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5624'RECOVERED AS DESCRIBED.
 AB5624
 AB5624                          STATION RECOVERY (2002)
 AB5624
 AB5624'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5624'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5625 ***********************************************************************
 AB5625  DESIGNATION -  GPS 019
 AB5625  PID         -  AB5625
 AB5625  STATE/COUNTY-  MD/TALBOT
 AB5625  COUNTRY     -  US
 AB5625  USGS QUAD   -  TRAPPE (2016)
 AB5625
 AB5625                         *CURRENT SURVEY CONTROL
 AB5625  ______________________________________________________________________
 AB5625* NAD 83(2011) POSITION- 38 44 07.24142(N) 076 04 07.86470(W)   ADJUSTED
 AB5625* NAD 83(2011) ELLIP HT-   -25.698 (meters)        (06/27/12)   ADJUSTED
 AB5625* NAD 83(2011) EPOCH   -  2010.00
 AB5625* NAVD 88 ORTHO HEIGHT -     9.060 (meters)       29.72  (feet) ADJUSTED
 AB5625  ______________________________________________________________________
 AB5625  GEOID HEIGHT    -        -34.749 (meters)                     GEOID18
 AB5625  NAD 83(2011) X  -  1,199,383.441 (meters)                     COMP
 AB5625  NAD 83(2011) Y  - -4,835,209.704 (meters)                     COMP
 AB5625  NAD 83(2011) Z  -  3,969,425.655 (meters)                     COMP
 AB5625  LAPLACE CORR    -         -3.12  (seconds)                    DEFLEC18
 AB5625  DYNAMIC HEIGHT  -          9.054 (meters)       29.70  (feet) COMP
 AB5625  MODELED GRAVITY -    980,032.2   (mgal)                       NAVD 88
 AB5625
 AB5625  VERT ORDER      -  SECOND    CLASS I
 AB5625
 AB5625  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5625  Standards:
 AB5625         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5625            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5625  -------------------------------------------------------------------
 AB5625  NETWORK    0.43   1.08           0.18   0.17   0.55     -0.16130255
 AB5625  -------------------------------------------------------------------
 AB5625  Click here for local accuracies and other accuracy information.
 AB5625
 AB5625.The horizontal coordinates were established by GPS observations
 AB5625.and adjusted by the National Geodetic Survey in June 2012.
 AB5625
 AB5625.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5625.been affixed to the stable North American tectonic plate. See 
 AB5625.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5625
 AB5625.The horizontal coordinates are valid at the epoch date displayed above
 AB5625.which is a decimal equivalence of Year/Month/Day.
 AB5625
 AB5625.The orthometric height was determined by differential leveling and
 AB5625.adjusted by the NATIONAL GEODETIC SURVEY
 AB5625.in September 2004.
 AB5625
 AB5625.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5625.GEOID18 height accuracy estimate available here.
 AB5625
 AB5625.Click photographs - Photos may exist for this station.
 AB5625
 AB5625.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5625
 AB5625.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5625
 AB5625.The ellipsoidal height was determined by GPS observations
 AB5625.and is referenced to NAD 83.
 AB5625
 AB5625.The dynamic height is computed by dividing the NAVD 88
 AB5625.geopotential number by the normal gravity value computed on the
 AB5625.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5625.degrees latitude (g = 980.6199 gals.).
 AB5625
 AB5625.The modeled gravity was interpolated from observed gravity values.
 AB5625
 AB5625. The following values were computed from the NAD 83(2011) position.
 AB5625
 AB5625;                    North         East     Units Scale Factor Converg.
 AB5625;SPC MD       -   119,040.387   480,956.467   MT  0.99995284   +0 35 03.9
 AB5625;SPC MD       -   390,551.67  1,577,938.01   sFT  0.99995284   +0 35 03.9
 AB5625;UTM  18      - 4,287,950.415   407,101.310   MT  0.99970627   -0 40 07.9
 AB5625
 AB5625!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5625!SPC MD       -   1.00000403  x   0.99995284  =   0.99995687
 AB5625!UTM  18      -   1.00000403  x   0.99970627  =   0.99971030
 AB5625
 AB5625:                Primary Azimuth Mark                     Grid Az
 AB5625:SPC MD       -  GPS 026                                  293 32 29.2
 AB5625:UTM  18      -  GPS 026                                  294 47 41.0
 AB5625
 AB5625_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0710187950(NAD 83)
 AB5625
 AB5625|---------------------------------------------------------------------|
 AB5625| PID    Reference Object                     Distance      Geod. Az  |
 AB5625|                                                           dddmmss.s |
 AB5625| AB5632 GPS 026                             APPROX. 1.4 KM 2940733.1 |
 AB5625| AB5626 GPS 020                             315.680 METERS 35138     |
 AB5625|---------------------------------------------------------------------|
 AB5625
 AB5625                          SUPERSEDED SURVEY CONTROL
 AB5625
 AB5625  NAD 83(2007)-  38 44 07.24166(N)    076 04 07.86542(W) AD(2002.00) 0
 AB5625  ELLIP H (02/10/07)  -25.668  (m)                       GP(2002.00)    
 AB5625  ELLIP H (08/30/02)  -25.674  (m)                       GP(       ) 4 2
 AB5625  NAD 83(1991)-  38 44 07.24139(N)    076 04 07.86556(W) AD(       ) 1
 AB5625  ELLIP H (08/02/96)  -25.650  (m)                       GP(       ) 3 1
 AB5625  NAVD 88 (08/02/96)    9.1    (m)  GEOID93  model used  GPS OBS        
 AB5625
 AB5625.Superseded values are not recommended for survey control.
 AB5625
 AB5625.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5625.See file dsdata.pdf to determine how the superseded data were derived.
 AB5625
 AB5625_MARKER: DD = SURVEY DISK
 AB5625_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5625_STAMPING: NO. GPS 019
 AB5625_MARK LOGO: MD0480
 AB5625_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5625_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5625+STABILITY: SURFACE MOTION
 AB5625_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5625+SATELLITE: SATELLITE OBSERVATIONS - November 07, 2005
 AB5625
 AB5625  HISTORY     - Date     Condition        Report By
 AB5625  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5625  HISTORY     - 19991007 GOOD             MDSHA
 AB5625  HISTORY     - 20030813 GOOD             USPSQD
 AB5625  HISTORY     - 20051107 GOOD             USPSQD
 AB5625
 AB5625                          STATION DESCRIPTION
 AB5625
 AB5625'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5625'THE STATION IS LOCATED ABOUT 2.6 MI (4.2 KM) SOUTH OF THE CENTER OF
 AB5625'EASTON.
 AB5625'
 AB5625'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5625'SOUTH ON RT 50 FOR 2.6 MI (4.2 KM) TO THE INTERSECTION WITH
 AB5625'SCHAWNINGER ROAD AND THE STATION ON THE LEFT, ABOUT 100 FT (30.5 M)
 AB5625'NORTH OF THE INTERSECTION.
 AB5625'
 AB5625'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5625'MONMENT FLUSH WITH THE GROUND, 33.1 FT (10.1 M) EAST OF THE CENTERLINE
 AB5625'OF THE WEST BOUND LANE, 88.3 FT (26.9 M) SOUTH OF POWER POLE NO.
 AB5625'WM-48-74, 29.0 FT (8.8 M) WEST OF THE CENTERLINE OF A 5 FT (1.5 M)
 AB5625'WIDE DITCH AND 116.0 FT (35.4 M) NORTH OF THE CENTERLINE OF
 AB5625'SCHAWNINGER ROAD.
 AB5625
 AB5625                          STATION RECOVERY (1999)
 AB5625
 AB5625'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5625'RECOVERED AS DESCRIBED.
 AB5625
 AB5625                          STATION RECOVERY (2003)
 AB5625
 AB5625'RECOVERY NOTE BY US POWER SQUADRON 2003 (WNF)
 AB5625'RECOVERED IN GOOD CONDITION.
 AB5625
 AB5625                          STATION RECOVERY (2005)
 AB5625
 AB5625'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 AB5625'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5626 ***********************************************************************
 AB5626  DESIGNATION -  GPS 020
 AB5626  PID         -  AB5626
 AB5626  STATE/COUNTY-  MD/TALBOT
 AB5626  COUNTRY     -  US
 AB5626  USGS QUAD   -  TRAPPE (2016)
 AB5626
 AB5626                         *CURRENT SURVEY CONTROL
 AB5626  ______________________________________________________________________
 AB5626* NAD 83(2011) POSITION- 38 44 17.36971(N) 076 04 09.76717(W)   ADJUSTED
 AB5626* NAD 83(2011) ELLIP HT-   -23.723 (meters)        (06/27/12)   ADJUSTED
 AB5626* NAD 83(2011) EPOCH   -  2010.00
 AB5626* NAVD 88 ORTHO HEIGHT -    11.027 (meters)       36.18  (feet) ADJUSTED
 AB5626  ______________________________________________________________________
 AB5626  GEOID HEIGHT    -        -34.744 (meters)                     GEOID18
 AB5626  NAD 83(2011) X  -  1,199,292.165 (meters)                     COMP
 AB5626  NAD 83(2011) Y  - -4,835,032.579 (meters)                     COMP
 AB5626  NAD 83(2011) Z  -  3,969,670.508 (meters)                     COMP
 AB5626  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 AB5626  DYNAMIC HEIGHT  -         11.020 (meters)       36.15  (feet) COMP
 AB5626  MODELED GRAVITY -    980,032.5   (mgal)                       NAVD 88
 AB5626
 AB5626  VERT ORDER      -  SECOND    CLASS I
 AB5626
 AB5626  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5626  Standards:
 AB5626         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5626            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5626  -------------------------------------------------------------------
 AB5626  NETWORK    0.43   1.22           0.18   0.17   0.62     -0.16744051
 AB5626  -------------------------------------------------------------------
 AB5626  Click here for local accuracies and other accuracy information.
 AB5626
 AB5626.The horizontal coordinates were established by GPS observations
 AB5626.and adjusted by the National Geodetic Survey in June 2012.
 AB5626
 AB5626.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5626.been affixed to the stable North American tectonic plate. See 
 AB5626.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5626
 AB5626.The horizontal coordinates are valid at the epoch date displayed above
 AB5626.which is a decimal equivalence of Year/Month/Day.
 AB5626
 AB5626.The orthometric height was determined by differential leveling and
 AB5626.adjusted by the NATIONAL GEODETIC SURVEY
 AB5626.in September 2004.
 AB5626
 AB5626.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5626.GEOID18 height accuracy estimate available here.
 AB5626
 AB5626.Click photographs - Photos may exist for this station.
 AB5626
 AB5626.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5626
 AB5626.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5626
 AB5626.The ellipsoidal height was determined by GPS observations
 AB5626.and is referenced to NAD 83.
 AB5626
 AB5626.The dynamic height is computed by dividing the NAVD 88
 AB5626.geopotential number by the normal gravity value computed on the
 AB5626.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5626.degrees latitude (g = 980.6199 gals.).
 AB5626
 AB5626.The modeled gravity was interpolated from observed gravity values.
 AB5626
 AB5626. The following values were computed from the NAD 83(2011) position.
 AB5626
 AB5626;                    North         East     Units Scale Factor Converg.
 AB5626;SPC MD       -   119,352.206   480,907.339   MT  0.99995272   +0 35 02.7
 AB5626;SPC MD       -   391,574.70  1,577,776.83   sFT  0.99995272   +0 35 02.7
 AB5626;UTM  18      - 4,288,263.157   407,059.024   MT  0.99970637   -0 40 09.2
 AB5626
 AB5626!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5626!SPC MD       -   1.00000372  x   0.99995272  =   0.99995644
 AB5626!UTM  18      -   1.00000372  x   0.99970637  =   0.99971009
 AB5626
 AB5626:                Primary Azimuth Mark                     Grid Az
 AB5626:SPC MD       -  GPS 026                                  281 10 24.3
 AB5626:UTM  18      -  GPS 026                                  282 25 36.2
 AB5626
 AB5626_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0705988263(NAD 83)
 AB5626
 AB5626|---------------------------------------------------------------------|
 AB5626| PID    Reference Object                     Distance      Geod. Az  |
 AB5626|                                                           dddmmss.s |
 AB5626| AB5632 GPS 026                             APPROX. 1.2 KM 2814527.0 |
 AB5626|---------------------------------------------------------------------|
 AB5626
 AB5626                          SUPERSEDED SURVEY CONTROL
 AB5626
 AB5626  NAD 83(2007)-  38 44 17.36995(N)    076 04 09.76788(W) AD(2002.00) 0
 AB5626  ELLIP H (02/10/07)  -23.692  (m)                       GP(2002.00)    
 AB5626  ELLIP H (08/30/02)  -23.687  (m)                       GP(       ) 4 2
 AB5626  NAD 83(1991)-  38 44 17.37012(N)    076 04 09.76812(W) AD(       ) 1
 AB5626  ELLIP H (08/02/96)  -23.652  (m)                       GP(       ) 3 1
 AB5626  NAVD 88 (08/02/96)   11.1    (m)  GEOID93  model used  GPS OBS        
 AB5626
 AB5626.Superseded values are not recommended for survey control.
 AB5626
 AB5626.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5626.See file dsdata.pdf to determine how the superseded data were derived.
 AB5626
 AB5626_MARKER: DD = SURVEY DISK
 AB5626_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5626_STAMPING: NO. GPS 020
 AB5626_MARK LOGO: MD0480
 AB5626_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5626_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5626+STABILITY: SURFACE MOTION
 AB5626_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AB5626+SATELLITE: SATELLITE OBSERVATIONS - August 13, 2003
 AB5626
 AB5626  HISTORY     - Date     Condition        Report By
 AB5626  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5626  HISTORY     - 19991007 GOOD             MDSHA
 AB5626  HISTORY     - 20030813 GOOD             USPSQD
 AB5626
 AB5626                          STATION DESCRIPTION
 AB5626
 AB5626'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5626'THE STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) SOUTH OF THE CENTER OF
 AB5626'EASTON.
 AB5626'
 AB5626'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5626'SOUTH ON RT 50 FOR 2.4 MI (3.9 KM) TO THE INTERSECTION WITH MD RT 322
 AB5626'(EASTON PARKWAY) AND THE STATION ON THE LEFT IN THE MEDIAN OF THE
 AB5626'HIGHWAY.
 AB5626'
 AB5626'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5626'MONMENT FLUSH WITH THE GROUND, 55.1 FT (16.8 M) EAST OF THE CENTERLINE
 AB5626'OF THE EASTBOUND LANE, 70.8 FT (21.6 M) NORTH OF A 15 IN GUM TREE,
 AB5626'61.0 FT (18.6 M) SOUTHEAST OF AN 18 IN OAK TREE, 36.3 FT (11.1 M)
 AB5626'SOUTHWEST OF A 12 IN TREE AND 46.3 FT (14.1 M) WEST OF THE EDGE OF THE
 AB5626'PAVEMENT OF THE TURNING LANE OF WESTBOUND RT 50 TO MD RT 322.
 AB5626
 AB5626                          STATION RECOVERY (1999)
 AB5626
 AB5626'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5626'RECOVERED AS DESCRIBED.
 AB5626
 AB5626                          STATION RECOVERY (2003)
 AB5626
 AB5626'RECOVERY NOTE BY US POWER SQUADRON 2003 (WNF)
 AB5626'GUM TREE IS DEAD.  PIECES OF A PLASTIC WITNESS POST, APPARENTLY
 AB5626'SHREDDED BY A MOWER WERE FOUND NEAR BY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB9763 ***********************************************************************
 AB9763  DESIGNATION -  GPS 020
 AB9763  PID         -  AB9763
 AB9763  STATE/COUNTY-  MD/PRINCE GEORGES
 AB9763  COUNTRY     -  US
 AB9763  USGS QUAD   -  LANHAM (2016)
 AB9763
 AB9763                         *CURRENT SURVEY CONTROL
 AB9763  ______________________________________________________________________
 AB9763* NAD 83(2011) POSITION- 38 59 44.03235(N) 076 50 33.08605(W)   ADJUSTED
 AB9763* NAD 83(2011) ELLIP HT-    31.684 (meters)        (06/27/12)   ADJUSTED
 AB9763* NAD 83(2011) EPOCH   -  2010.00
 AB9763* NAVD 88 ORTHO HEIGHT -    64.038 (meters)      210.10  (feet) ADJUSTED
 AB9763  ______________________________________________________________________
 AB9763  GEOID HEIGHT    -        -32.363 (meters)                     GEOID18
 AB9763  NAD 83(2011) X  -  1,129,869.578 (meters)                     COMP
 AB9763  NAD 83(2011) Y  - -4,833,356.337 (meters)                     COMP
 AB9763  NAD 83(2011) Z  -  3,991,954.278 (meters)                     COMP
 AB9763  LAPLACE CORR    -         -5.40  (seconds)                    DEFLEC18
 AB9763  DYNAMIC HEIGHT  -         64.003 (meters)      209.98  (feet) COMP
 AB9763  MODELED GRAVITY -    980,090.4   (mgal)                       NAVD 88
 AB9763
 AB9763  VERT ORDER      -  SECOND    CLASS II
 AB9763
 AB9763  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB9763  Standards:
 AB9763         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB9763            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB9763  -------------------------------------------------------------------
 AB9763  NETWORK    0.59   0.73           0.26   0.22   0.37     -0.12166071
 AB9763  -------------------------------------------------------------------
 AB9763  Click here for local accuracies and other accuracy information.
 AB9763
 AB9763.The horizontal coordinates were established by GPS observations
 AB9763.and adjusted by the National Geodetic Survey in June 2012.
 AB9763
 AB9763.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB9763.been affixed to the stable North American tectonic plate. See 
 AB9763.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB9763
 AB9763.The horizontal coordinates are valid at the epoch date displayed above
 AB9763.which is a decimal equivalence of Year/Month/Day.
 AB9763
 AB9763.The orthometric height was determined by differential leveling and
 AB9763.adjusted by the NATIONAL GEODETIC SURVEY
 AB9763.in September 1997.
 AB9763
 AB9763.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB9763.GEOID18 height accuracy estimate available here.
 AB9763
 AB9763.Click photographs - Photos may exist for this station.
 AB9763
 AB9763.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB9763
 AB9763.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB9763
 AB9763.The ellipsoidal height was determined by GPS observations
 AB9763.and is referenced to NAD 83.
 AB9763
 AB9763.The dynamic height is computed by dividing the NAVD 88
 AB9763.geopotential number by the normal gravity value computed on the
 AB9763.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB9763.degrees latitude (g = 980.6199 gals.).
 AB9763
 AB9763.The modeled gravity was interpolated from observed gravity values.
 AB9763
 AB9763. The following values were computed from the NAD 83(2011) position.
 AB9763
 AB9763;                    North         East     Units Scale Factor Converg.
 AB9763;SPC MD       -   147,525.594   413,641.778   MT  0.99995203   +0 05 55.8
 AB9763;SPC MD       -   484,006.89  1,357,089.73   sFT  0.99995203   +0 05 55.8
 AB9763;UTM  18      - 4,317,899.131   340,436.878   MT  0.99991351   -1 09 34.8
 AB9763
 AB9763!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB9763!SPC MD       -   0.99999503  x   0.99995203  =   0.99994706
 AB9763!UTM  18      -   0.99999503  x   0.99991351  =   0.99990854
 AB9763
 AB9763:                Primary Azimuth Mark                     Grid Az
 AB9763:SPC MD       -  NASA RM 3                                312 54 47.2
 AB9763:UTM  18      -  NASA RM 3                                314 10 17.8
 AB9763
 AB9763_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4043617899(NAD 83)
 AB9763
 AB9763|---------------------------------------------------------------------|
 AB9763| PID    Reference Object                     Distance      Geod. Az  |
 AB9763|                                                           dddmmss.s |
 AB9763| HV7473 NASA RM 3                           APPROX. 0.5 KM 3130043.0 |
 AB9763|---------------------------------------------------------------------|
 AB9763
 AB9763                          SUPERSEDED SURVEY CONTROL
 AB9763
 AB9763  NAD 83(2007)-  38 59 44.03266(N)    076 50 33.08676(W) AD(2002.00) 0
 AB9763  ELLIP H (02/10/07)   31.700  (m)                       GP(2002.00)    
 AB9763  ELLIP H (08/30/02)   31.692  (m)                       GP(       ) 4 2
 AB9763  NAD 83(1991)-  38 59 44.03253(N)    076 50 33.08660(W) AD(       ) 1
 AB9763  ELLIP H (01/10/97)   31.758  (m)                       GP(       ) 4 1
 AB9763  NAVD 88 (01/10/97)   64.0    (m)  GEOID93  model used  GPS OBS        
 AB9763
 AB9763.Superseded values are not recommended for survey control.
 AB9763
 AB9763.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB9763.See file dsdata.pdf to determine how the superseded data were derived.
 AB9763
 AB9763_MARKER: A = ALUMINUM MARKER
 AB9763_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB9763_STAMPING: NASA-GSFC 220-FMD GPS-020 MARCH 1996
 AB9763_MARK LOGO: NASA
 AB9763_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB9763_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB9763+STABILITY: SURFACE MOTION
 AB9763_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB9763+SATELLITE: SATELLITE OBSERVATIONS - April 15, 1996
 AB9763
 AB9763  HISTORY     - Date     Condition        Report By
 AB9763  HISTORY     - 1996     MONUMENTED       LOCSUR
 AB9763  HISTORY     - 19960415 GOOD             RICE
 AB9763
 AB9763                          STATION DESCRIPTION
 AB9763
 AB9763'DESCRIBED BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1996 (RJM)
 AB9763'AT GODDARD SPACE FLIGHT CENTER 2 MILES (3.2 KM) EAST OF GREENBELT
 AB9763'MARYLAND, 3 MILES (4.8 KM) WEST OF BOWIE MARYLAND, 2 MILES (3.2 KM)
 AB9763'EAST OF THE BALTIMORE WASHINGTON PARKWAY.  IN THE MEDIAN OF EXPLORER
 AB9763'ROAD.  12.2 M (40.0 FT) SOUTH OF A MANHOLE, 2.5 M (8.2 FT) EAST OF A
 AB9763'STREET LIGHT POLE, 0.4 M (1.3 FT) EAST OF A WITNESS POST.  TO REACH
 AB9763'THE STATION FROM THE INTERSECTION OF GREENBELT ROAD AND GOOD LUCK
 AB9763'ROAD, PROCEED 0.5 KM (0.30 MI) WEST ON GREENBELT ROAD TO THE
 AB9763'INTERSECTION OF SOIL CONSERVATION ROAD, TURN RIGHT AND PROCEED NORTH
 AB9763'NORTHWEST 0.3 KM (0.20 MI) TO THE INTERSECTION OF EXPLORER ROAD, TURN
 AB9763'RIGHT AND PROCEED NORTHEAST 0.2 KM (0.10 MI) TO THE STATION ON THE
 AB9763'LEFT IN THE MEDIAN.  ACCESS SHOULD BE COORDINATED IN ADVANCE THROUGH
 AB9763'THE OFFICE OF THE CHIEF OF FACILITIES MANAGEMENT AT GODDARD SPACE
 AB9763'FLIGHT CENTER (301-286-8931) .
 AB9763
 AB9763                          STATION RECOVERY (1996)
 AB9763
 AB9763'RECOVERY NOTE BY RICE ASSOCIATES PC 1996 (RJM)
 AB9763'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5627 ***********************************************************************
 AB5627  DESIGNATION -  GPS 021
 AB5627  PID         -  AB5627
 AB5627  STATE/COUNTY-  MD/TALBOT
 AB5627  COUNTRY     -  US
 AB5627  USGS QUAD   -  TRAPPE (2016)
 AB5627
 AB5627                         *CURRENT SURVEY CONTROL
 AB5627  ______________________________________________________________________
 AB5627* NAD 83(2011) POSITION- 38 44 32.94740(N) 076 02 31.08477(W)   ADJUSTED
 AB5627* NAD 83(2011) ELLIP HT-   -17.411 (meters)        (06/27/12)   ADJUSTED
 AB5627* NAD 83(2011) EPOCH   -  2010.00
 AB5627* NAVD 88 ORTHO HEIGHT -    17.4   (meters)       57.    (feet) GPS OBS
 AB5627  ______________________________________________________________________
 AB5627  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5627  GEOID HEIGHT    -        -35.127 (meters)                     GEOID93
 AB5627  GEOID HEIGHT    -        -34.781 (meters)                     GEOID18
 AB5627  NAD 83(2011) X  -  1,201,533.911 (meters)                     COMP
 AB5627  NAD 83(2011) Y  - -4,834,171.304 (meters)                     COMP
 AB5627  NAD 83(2011) Z  -  3,970,049.131 (meters)                     COMP
 AB5627  LAPLACE CORR    -         -3.27  (seconds)                    DEFLEC18
 AB5627
 AB5627  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5627  Standards:
 AB5627         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5627            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5627  -------------------------------------------------------------------
 AB5627  NETWORK    0.73   2.23           0.28   0.31   1.14     -0.19174757
 AB5627  -------------------------------------------------------------------
 AB5627  Click here for local accuracies and other accuracy information.
 AB5627
 AB5627.The horizontal coordinates were established by GPS observations
 AB5627.and adjusted by the National Geodetic Survey in June 2012.
 AB5627
 AB5627.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5627.been affixed to the stable North American tectonic plate. See 
 AB5627.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5627
 AB5627.The horizontal coordinates are valid at the epoch date displayed above
 AB5627.which is a decimal equivalence of Year/Month/Day.
 AB5627
 AB5627.The orthometric height was determined by GPS observations and a
 AB5627.high-resolution geoid model.
 AB5627
 AB5627.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5627.GEOID18 height accuracy estimate available here.
 AB5627
 AB5627.Click photographs - Photos may exist for this station.
 AB5627
 AB5627.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5627
 AB5627.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5627
 AB5627.The ellipsoidal height was determined by GPS observations
 AB5627.and is referenced to NAD 83.
 AB5627
 AB5627. The following values were computed from the NAD 83(2011) position.
 AB5627
 AB5627;                    North         East     Units Scale Factor Converg.
 AB5627;SPC MD       -   119,857.167   483,285.369   MT  0.99995254   +0 36 04.7
 AB5627;SPC MD       -   393,231.39  1,585,578.75   sFT  0.99995254   +0 36 04.7
 AB5627;UTM  18      - 4,288,715.868   409,446.936   MT  0.99970097   -0 39 07.7
 AB5627
 AB5627!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5627!SPC MD       -   1.00000273  x   0.99995254  =   0.99995527
 AB5627!UTM  18      -   1.00000273  x   0.99970097  =   0.99970370
 AB5627
 AB5627_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0944688715(NAD 83)
 AB5627
 AB5627|---------------------------------------------------------------------|
 AB5627| PID    Reference Object                     Distance      Geod. Az  |
 AB5627|                                                           dddmmss.s |
 AB5627| AB5628 GPS 022                             376.996 METERS 12646     |
 AB5627|---------------------------------------------------------------------|
 AB5627
 AB5627                          SUPERSEDED SURVEY CONTROL
 AB5627
 AB5627  NAD 83(2007)-  38 44 32.94764(N)    076 02 31.08549(W) AD(2002.00) 0
 AB5627  ELLIP H (02/10/07)  -17.381  (m)                       GP(2002.00)    
 AB5627  ELLIP H (08/30/02)  -17.388  (m)                       GP(       ) 4 2
 AB5627  NAD 83(1991)-  38 44 32.94804(N)    076 02 31.08571(W) AD(       ) 1
 AB5627  ELLIP H (08/02/96)  -17.339  (m)                       GP(       ) 3 1
 AB5627
 AB5627.Superseded values are not recommended for survey control.
 AB5627
 AB5627.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5627.See file dsdata.pdf to determine how the superseded data were derived.
 AB5627
 AB5627_MARKER: DD = SURVEY DISK
 AB5627_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5627_STAMPING: NO.GPS 021
 AB5627_MARK LOGO: MD0480
 AB5627_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5627_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5627+STABILITY: SURFACE MOTION
 AB5627_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5627+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AB5627
 AB5627  HISTORY     - Date     Condition        Report By
 AB5627  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5627
 AB5627                          STATION DESCRIPTION
 AB5627
 AB5627'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5627'THE STATION IS LOCATED ABOUT 3.0 MI (4.8 KM) SOUTHEAST OF THE CENTER
 AB5627'OF EASTON.
 AB5627'
 AB5627'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5627'SOUTH ON RT 50 FOR 0.85 MI (1.37 KM) TO THE INTERSECTION WITH
 AB5627'DUTCHMANS LANE.  TURN LEFT ON DUTCHMANS LANE AND GO SOUTHEAST FOR
 AB5627'1.6 MI (2.6 KM) TO THE STATION ON THE LEFT.
 AB5627'
 AB5627'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5627'MONUMENT FLUSH WITH THE GROUND, 53.4 FT (16.3 M) SOUTHEAST OF AN
 AB5627'UNNUMBERED POWER POLE, 199.7 FT (60.9 M) NORTHWEST OF POWER POLE NO.
 AB5627'342-2-4 AND 24.2 FT (7.4 M) NORTHEAST OF THE CENTERLINE OF DUTCHMANS
 AB5627'LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB9764 ***********************************************************************
 AB9764  DESIGNATION -  GPS 021
 AB9764  PID         -  AB9764
 AB9764  STATE/COUNTY-  MD/PRINCE GEORGES
 AB9764  COUNTRY     -  US
 AB9764  USGS QUAD   -  LAUREL (2016)
 AB9764
 AB9764                         *CURRENT SURVEY CONTROL
 AB9764  ______________________________________________________________________
 AB9764* NAD 83(2011) POSITION- 39 00 00.49011(N) 076 50 36.29388(W)   ADJUSTED
 AB9764* NAD 83(2011) ELLIP HT-    16.175 (meters)        (06/27/12)   ADJUSTED
 AB9764* NAD 83(2011) EPOCH   -  2010.00
 AB9764* NAVD 88 ORTHO HEIGHT -    48.524 (meters)      159.20  (feet) ADJUSTED
 AB9764  ______________________________________________________________________
 AB9764  GEOID HEIGHT    -        -32.356 (meters)                     GEOID18
 AB9764  NAD 83(2011) X  -  1,129,718.972 (meters)                     COMP
 AB9764  NAD 83(2011) Y  - -4,833,051.177 (meters)                     COMP
 AB9764  NAD 83(2011) Z  -  3,992,338.948 (meters)                     COMP
 AB9764  LAPLACE CORR    -         -5.35  (seconds)                    DEFLEC18
 AB9764  DYNAMIC HEIGHT  -         48.497 (meters)      159.11  (feet) COMP
 AB9764  MODELED GRAVITY -    980,089.4   (mgal)                       NAVD 88
 AB9764
 AB9764  VERT ORDER      -  SECOND    CLASS II
 AB9764
 AB9764  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB9764  Standards:
 AB9764         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB9764            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB9764  -------------------------------------------------------------------
 AB9764  NETWORK    0.66   0.80           0.29   0.24   0.41     -0.14369314
 AB9764  -------------------------------------------------------------------
 AB9764  Click here for local accuracies and other accuracy information.
 AB9764
 AB9764.The horizontal coordinates were established by GPS observations
 AB9764.and adjusted by the National Geodetic Survey in June 2012.
 AB9764
 AB9764.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB9764.been affixed to the stable North American tectonic plate. See 
 AB9764.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB9764
 AB9764.The horizontal coordinates are valid at the epoch date displayed above
 AB9764.which is a decimal equivalence of Year/Month/Day.
 AB9764
 AB9764.The orthometric height was determined by differential leveling and
 AB9764.adjusted by the NATIONAL GEODETIC SURVEY
 AB9764.in September 1997.
 AB9764
 AB9764.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB9764.GEOID18 height accuracy estimate available here.
 AB9764
 AB9764.Click photographs - Photos may exist for this station.
 AB9764
 AB9764.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB9764
 AB9764.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB9764
 AB9764.The ellipsoidal height was determined by GPS observations
 AB9764.and is referenced to NAD 83.
 AB9764
 AB9764.The dynamic height is computed by dividing the NAVD 88
 AB9764.geopotential number by the normal gravity value computed on the
 AB9764.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB9764.degrees latitude (g = 980.6199 gals.).
 AB9764
 AB9764.The modeled gravity was interpolated from observed gravity values.
 AB9764
 AB9764. The following values were computed from the NAD 83(2011) position.
 AB9764
 AB9764;                    North         East     Units Scale Factor Converg.
 AB9764;SPC MD       -   148,032.954   413,563.717   MT  0.99995219   +0 05 53.8
 AB9764;SPC MD       -   485,671.45  1,356,833.63   sFT  0.99995219   +0 05 53.8
 AB9764;UTM  18      - 4,318,408.064   340,369.982   MT  0.99991377   -1 09 37.2
 AB9764
 AB9764!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB9764!SPC MD       -   0.99999746  x   0.99995219  =   0.99994965
 AB9764!UTM  18      -   0.99999746  x   0.99991377  =   0.99991123
 AB9764
 AB9764:                Primary Azimuth Mark                     Grid Az
 AB9764:SPC MD       -  GPS 020                                  171 15 11.5
 AB9764:UTM  18      -  GPS 020                                  172 30 42.5
 AB9764
 AB9764_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4036918408(NAD 83)
 AB9764
 AB9764|---------------------------------------------------------------------|
 AB9764| PID    Reference Object                     Distance      Geod. Az  |
 AB9764|                                                           dddmmss.s |
 AB9764| AB9763 GPS 020                             APPROX. 0.5 KM 1712105.3 |
 AB9764| HV7473 NASA RM 3                           333.535 METERS 24019     |
 AB9764|---------------------------------------------------------------------|
 AB9764
 AB9764                          SUPERSEDED SURVEY CONTROL
 AB9764
 AB9764  NAD 83(2007)-  39 00 00.49042(N)    076 50 36.29459(W) AD(2002.00) 0
 AB9764  ELLIP H (02/10/07)   16.191  (m)                       GP(2002.00)    
 AB9764  ELLIP H (08/30/02)   16.182  (m)                       GP(       ) 4 2
 AB9764  NAD 83(1991)-  39 00 00.49026(N)    076 50 36.29443(W) AD(       ) 1
 AB9764  ELLIP H (01/10/97)   16.249  (m)                       GP(       ) 4 1
 AB9764  NAVD 88 (01/10/97)   48.5    (m)  GEOID93  model used  GPS OBS        
 AB9764
 AB9764.Superseded values are not recommended for survey control.
 AB9764
 AB9764.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB9764.See file dsdata.pdf to determine how the superseded data were derived.
 AB9764
 AB9764_MARKER: A = ALUMINUM MARKER
 AB9764_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB9764_STAMPING: NASA-GSFC 220-FMD GPS-021 MARCH 1996
 AB9764_MARK LOGO: NASA
 AB9764_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB9764_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB9764+STABILITY: SURFACE MOTION
 AB9764_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB9764+SATELLITE: SATELLITE OBSERVATIONS - April 15, 1996
 AB9764
 AB9764  HISTORY     - Date     Condition        Report By
 AB9764  HISTORY     - 1996     MONUMENTED       LOCSUR
 AB9764  HISTORY     - 19960415 GOOD             RICE
 AB9764
 AB9764                          STATION DESCRIPTION
 AB9764
 AB9764'DESCRIBED BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1996 (RJM)
 AB9764'AT GODDARD SPACE FLIGHT CENTER 2 MILES (3.2 KM) EAST OF GREENBELT
 AB9764'MARYLAND, 3 MILES (4.8 KM) WEST OF BOWIE MARYLAND, 2 MILES (3.2 KM)
 AB9764'EAST OF THE BALTIMORE WASHINGTON PARKWAY.  EAST OF COLL.  TOWER ROAD.
 AB9764'11.8 M (38.7 FT) SOUTHEAST OF A BURIED CABLE SIGN, 12.5 M (41.0 FT)
 AB9764'EAST OF THE EDGE OF PAVEMENT, 0.4 M (1.3 FT) SOUTHEAST OF A WITNESS
 AB9764'POST.  TO REACH THE STATION FROM THE INTERSECTION OF GREENBELT ROAD
 AB9764'AND GOOD LUCK ROAD PROCEED 0.5 KM (0.30 MI) WEST ON GREENBELT ROAD TO
 AB9764'THE INTERSECTION OF SOIL CONSERVATION ROAD, TURN RIGHT AND PROCEED
 AB9764'NORTH NORTHWEST 0.6 KM (0.35 MI) TO THE INTERSECTION OF A UNMARKED
 AB9764'ROAD TO THE RIGHT, TURN RIGHT AND PROCEED EAST THROUGH A SECURITY GATE
 AB9764'0.4 KM (0.25 MI) TO THE INTERSECTION OF EAST ROAD, TURN LEFT AND
 AB9764'PROCEED NORTH 0.3 KM (0.20 MI) TO THE END OF THE ROAD AND THE
 AB9764'INTERSECTION OF NORTH ROAD, TURN LEFT AND PROCEED WEST 0.2 KM (0.10
 AB9764'MI) TO THE INTERSECTION WITH COLL.  TOWER ROAD, TURN RIGHT AND PROCEED
 AB9764'WEST 0.2 KM (0.10 MI) TO THE STATION ON THE RIGHT IN THE GRASS.
 AB9764'ACCESS SHOULD BE COORDINATED IN ADVANCE THROUGH THE OFFICE OF THE
 AB9764'CHIEF OF FACILITIES MANAGEMENT AT GODDARD SPACE FLIGHT CENTER
 AB9764'(301-286-8931) .
 AB9764
 AB9764                          STATION RECOVERY (1996)
 AB9764
 AB9764'RECOVERY NOTE BY RICE ASSOCIATES PC 1996 (RJM)
 AB9764'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5628 ***********************************************************************
 AB5628  DESIGNATION -  GPS 022
 AB5628  PID         -  AB5628
 AB5628  STATE/COUNTY-  MD/TALBOT
 AB5628  COUNTRY     -  US
 AB5628  USGS QUAD   -  TRAPPE (2016)
 AB5628
 AB5628                         *CURRENT SURVEY CONTROL
 AB5628  ______________________________________________________________________
 AB5628* NAD 83(2011) POSITION- 38 44 25.62961(N) 076 02 18.57952(W)   ADJUSTED
 AB5628* NAD 83(2011) ELLIP HT-   -15.281 (meters)        (06/27/12)   ADJUSTED
 AB5628* NAD 83(2011) EPOCH   -  2010.00
 AB5628* NAVD 88 ORTHO HEIGHT -    19.5   (meters)       64.    (feet) GPS OBS
 AB5628  ______________________________________________________________________
 AB5628  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5628  GEOID HEIGHT    -        -35.137 (meters)                     GEOID93
 AB5628  GEOID HEIGHT    -        -34.791 (meters)                     GEOID18
 AB5628  NAD 83(2011) X  -  1,201,861.462 (meters)                     COMP
 AB5628  NAD 83(2011) Y  - -4,834,237.105 (meters)                     COMP
 AB5628  NAD 83(2011) Z  -  3,969,874.460 (meters)                     COMP
 AB5628  LAPLACE CORR    -         -3.33  (seconds)                    DEFLEC18
 AB5628
 AB5628  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5628  Standards:
 AB5628         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5628            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5628  -------------------------------------------------------------------
 AB5628  NETWORK    0.61   1.45           0.25   0.25   0.74     -0.07808945
 AB5628  -------------------------------------------------------------------
 AB5628  Click here for local accuracies and other accuracy information.
 AB5628
 AB5628.The horizontal coordinates were established by GPS observations
 AB5628.and adjusted by the National Geodetic Survey in June 2012.
 AB5628
 AB5628.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5628.been affixed to the stable North American tectonic plate. See 
 AB5628.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5628
 AB5628.The horizontal coordinates are valid at the epoch date displayed above
 AB5628.which is a decimal equivalence of Year/Month/Day.
 AB5628
 AB5628.The orthometric height was determined by GPS observations and a
 AB5628.high-resolution geoid model.
 AB5628
 AB5628.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5628.GEOID18 height accuracy estimate available here.
 AB5628
 AB5628.Click photographs - Photos may exist for this station.
 AB5628
 AB5628.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5628
 AB5628.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5628
 AB5628.The ellipsoidal height was determined by GPS observations
 AB5628.and is referenced to NAD 83.
 AB5628
 AB5628. The following values were computed from the NAD 83(2011) position.
 AB5628
 AB5628;                    North         East     Units Scale Factor Converg.
 AB5628;SPC MD       -   119,634.712   483,589.715   MT  0.99995262   +0 36 12.5
 AB5628;SPC MD       -   392,501.55  1,586,577.26   sFT  0.99995262   +0 36 12.5
 AB5628;UTM  18      - 4,288,486.866   409,746.267   MT  0.99970031   -0 38 59.7
 AB5628
 AB5628!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5628!SPC MD       -   1.00000240  x   0.99995262  =   0.99995502
 AB5628!UTM  18      -   1.00000240  x   0.99970031  =   0.99970271
 AB5628
 AB5628_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0974688486(NAD 83)
 AB5628
 AB5628|---------------------------------------------------------------------|
 AB5628| PID    Reference Object                     Distance      Geod. Az  |
 AB5628|                                                           dddmmss.s |
 AB5628| AB5627 GPS 021                             376.996 METERS 30646     |
 AB5628|---------------------------------------------------------------------|
 AB5628
 AB5628                          SUPERSEDED SURVEY CONTROL
 AB5628
 AB5628  NAD 83(2007)-  38 44 25.62985(N)    076 02 18.58024(W) AD(2002.00) 0
 AB5628  ELLIP H (02/10/07)  -15.251  (m)                       GP(2002.00)    
 AB5628  ELLIP H (08/30/02)  -15.258  (m)                       GP(       ) 4 2
 AB5628  NAD 83(1991)-  38 44 25.63049(N)    076 02 18.58048(W) AD(       ) 1
 AB5628  ELLIP H (08/02/96)  -15.202  (m)                       GP(       ) 3 1
 AB5628
 AB5628.Superseded values are not recommended for survey control.
 AB5628
 AB5628.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5628.See file dsdata.pdf to determine how the superseded data were derived.
 AB5628
 AB5628_MARKER: DD = SURVEY DISK
 AB5628_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5628_STAMPING: NO.GPS-022
 AB5628_MARK LOGO: MD0480
 AB5628_PROJECTION: PROJECTING 5 CENTIMETERS
 AB5628_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5628_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5628+STABILITY: SURFACE MOTION
 AB5628_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5628+SATELLITE: SATELLITE OBSERVATIONS - July 06, 2012
 AB5628
 AB5628  HISTORY     - Date     Condition        Report By
 AB5628  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5628  HISTORY     - 20120706 GOOD             NGS
 AB5628
 AB5628                          STATION DESCRIPTION
 AB5628
 AB5628'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5628'THE STATION IS LOCATED ABOUT 3.2 MI (5.1 KM) SOUTHEAST OF THE CENTER
 AB5628'OF EASTON.
 AB5628'
 AB5628'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5628'SOUTH ON RT 50 FOR 0.85 MI (1.37 KM) TO THE INTERSECTION WITH
 AB5628'DUTCHMANS LANE.  TURN LEFT ON DUTCHMANS LANE AND GO SOUTHEAST FOR
 AB5628'1.8 MI (2.9 KM) TO A T-INTERSECTION WITH DOVER NECK ROAD TO THE LEFT,
 AB5628'MANADIER ROAD TO THE RIGHT AND THE STATION STRAIGHT AHEAD AT A POWER
 AB5628'COMPANY SUBSTATION.
 AB5628'
 AB5628'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5628'MONUMENT FLUSH WITH THE GROUND, 22.1 FT (6.7 M) SOUTHEAST OF THE
 AB5628'CENTERLINE OF THE INTERSECTION, 70.0 FT (21.3 M) SOUTHWEST OF THE
 AB5628'CENTERLINE OF THE STONE ENTRANCE ROAD TO THE SUBSTATION, 31.3 FT
 AB5628'(9.5 M) NORTHWEST OF THE SOUTHWEST CORNER OF A CHAIN LINK FENCE
 AB5628'AROUND THE SUBSTATION AND 24.7 FT (7.5 M) NORTHEAST OF POWER POLE NO.
 AB5628'342-2-501.
 AB5628
 AB5628                          STATION RECOVERY (2012)
 AB5628
 AB5628'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRA)
 AB5628'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5629 ***********************************************************************
 AB5629  DESIGNATION -  GPS 023
 AB5629  PID         -  AB5629
 AB5629  STATE/COUNTY-  MD/TALBOT
 AB5629  COUNTRY     -  US
 AB5629  USGS QUAD   -  TRAPPE (2016)
 AB5629
 AB5629                         *CURRENT SURVEY CONTROL
 AB5629  ______________________________________________________________________
 AB5629* NAD 83(2011) POSITION- 38 43 51.68855(N) 076 05 17.14269(W)   ADJUSTED
 AB5629* NAD 83(2011) ELLIP HT-   -28.402 (meters)        (06/27/12)   ADJUSTED
 AB5629* NAD 83(2011) EPOCH   -  2010.00
 AB5629* NAVD 88 ORTHO HEIGHT -     6.315 (meters)       20.72  (feet) ADJUSTED
 AB5629  ______________________________________________________________________
 AB5629  GEOID HEIGHT    -        -34.725 (meters)                     GEOID18
 AB5629  NAD 83(2011) X  -  1,197,831.015 (meters)                     COMP
 AB5629  NAD 83(2011) Y  - -4,835,901.494 (meters)                     COMP
 AB5629  NAD 83(2011) Z  -  3,969,049.851 (meters)                     COMP
 AB5629  LAPLACE CORR    -         -3.22  (seconds)                    DEFLEC18
 AB5629  DYNAMIC HEIGHT  -          6.311 (meters)       20.71  (feet) COMP
 AB5629  MODELED GRAVITY -    980,032.3   (mgal)                       NAVD 88
 AB5629
 AB5629  VERT ORDER      -  SECOND    CLASS I
 AB5629
 AB5629  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5629  Standards:
 AB5629         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5629            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5629  -------------------------------------------------------------------
 AB5629  NETWORK    0.77   1.59           0.36   0.24   0.81     -0.08256371
 AB5629  -------------------------------------------------------------------
 AB5629  Click here for local accuracies and other accuracy information.
 AB5629
 AB5629.The horizontal coordinates were established by GPS observations
 AB5629.and adjusted by the National Geodetic Survey in June 2012.
 AB5629
 AB5629.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5629.been affixed to the stable North American tectonic plate. See 
 AB5629.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5629
 AB5629.The horizontal coordinates are valid at the epoch date displayed above
 AB5629.which is a decimal equivalence of Year/Month/Day.
 AB5629
 AB5629.The orthometric height was determined by differential leveling and
 AB5629.adjusted by the NATIONAL GEODETIC SURVEY
 AB5629.in September 2004.
 AB5629
 AB5629.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5629.GEOID18 height accuracy estimate available here.
 AB5629
 AB5629.Click photographs - Photos may exist for this station.
 AB5629
 AB5629.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5629
 AB5629.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5629
 AB5629.The ellipsoidal height was determined by GPS observations
 AB5629.and is referenced to NAD 83.
 AB5629
 AB5629.The dynamic height is computed by dividing the NAVD 88
 AB5629.geopotential number by the normal gravity value computed on the
 AB5629.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5629.degrees latitude (g = 980.6199 gals.).
 AB5629
 AB5629.The modeled gravity was interpolated from observed gravity values.
 AB5629
 AB5629. The following values were computed from the NAD 83(2011) position.
 AB5629
 AB5629;                    North         East     Units Scale Factor Converg.
 AB5629;SPC MD       -   118,543.952   479,288.201   MT  0.99995302   +0 34 20.4
 AB5629;SPC MD       -   388,922.95  1,572,464.71   sFT  0.99995302   +0 34 20.4
 AB5629;UTM  18      - 4,287,490.698   405,422.996   MT  0.99971015   -0 40 51.0
 AB5629
 AB5629!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5629!SPC MD       -   1.00000446  x   0.99995302  =   0.99995748
 AB5629!UTM  18      -   1.00000446  x   0.99971015  =   0.99971461
 AB5629
 AB5629_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0542287490(NAD 83)
 AB5629
 AB5629|---------------------------------------------------------------------|
 AB5629| PID    Reference Object                     Distance      Geod. Az  |
 AB5629|                                                           dddmmss.s |
 AB5629| AB5630 GPS 024                             265.372 METERS 19333     |
 AB5629|---------------------------------------------------------------------|
 AB5629
 AB5629                          SUPERSEDED SURVEY CONTROL
 AB5629
 AB5629  NAD 83(2007)-  38 43 51.68882(N)    076 05 17.14348(W) AD(2002.00) 0
 AB5629  ELLIP H (02/10/07)  -28.372  (m)                       GP(2002.00)    
 AB5629  ELLIP H (08/30/02)  -28.366  (m)                       GP(       ) 4 2
 AB5629  NAD 83(1991)-  38 43 51.68875(N)    076 05 17.14312(W) AD(       ) 1
 AB5629  ELLIP H (08/02/96)  -28.383  (m)                       GP(       ) 3 1
 AB5629  NAVD 88 (08/02/96)    6.3    (m)  GEOID93  model used  GPS OBS        
 AB5629
 AB5629.Superseded values are not recommended for survey control.
 AB5629
 AB5629.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5629.See file dsdata.pdf to determine how the superseded data were derived.
 AB5629
 AB5629_MARKER: DD = SURVEY DISK
 AB5629_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5629_STAMPING: NO. GPS 023
 AB5629_MARK LOGO: MD0480
 AB5629_PROJECTION: RECESSED 3 CENTIMETERS
 AB5629_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5629_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5629+STABILITY: SURFACE MOTION
 AB5629_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5629+SATELLITE: SATELLITE OBSERVATIONS - October 09, 2023
 AB5629
 AB5629  HISTORY     - Date     Condition        Report By
 AB5629  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5629  HISTORY     - 20000912 GOOD             MDSHA
 AB5629  HISTORY     - 20231009 GOOD             BASE9
 AB5629
 AB5629                          STATION DESCRIPTION
 AB5629
 AB5629'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5629'THE STATION IS LOCATED ABOUT 3.2 MI (5.1 KM) SOUTH OF THE CENTER OF
 AB5629'EASTON.
 AB5629'
 AB5629'TO REACH FROM THE INTERSECTION OF RT 333 (OXFORD RD) AND RT 322
 AB5629'(EASTON PARKWAY), GO SOUTHWEST ON RT 333 FOR 2.2 MI (3.5 KM) TO THE
 AB5629'INTERSECTION WITH OLD COUNTRY CLUB DRIVE AND THE STATION ON THE RIGHT.
 AB5629'
 AB5629'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5629'MONUMENT FLUSH WITH THE GROUND, 191.0 FT (58.2 M) EAST OF TELEPHONE
 AB5629'POLE NO.134, 72.0 FT (21.9 M) NORTH OF THE CENTERLINE OF OLD COUNTRY
 AB5629'CLUB ROAD AND 36.2 FT (11.0 M) WEST OF THE CENTERLINE OF RT 333.
 AB5629
 AB5629                          STATION RECOVERY (2000)
 AB5629
 AB5629'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5629'RECOVERED AS DESCRIBED.
 AB5629
 AB5629                          STATION RECOVERY (2023)
 AB5629
 AB5629'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2023 (DRD)
 AB5629'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5630 ***********************************************************************
 AB5630  DESIGNATION -  GPS 024
 AB5630  PID         -  AB5630
 AB5630  STATE/COUNTY-  MD/TALBOT
 AB5630  COUNTRY     -  US
 AB5630  USGS QUAD   -  TRAPPE (2016)
 AB5630
 AB5630                         *CURRENT SURVEY CONTROL
 AB5630  ______________________________________________________________________
 AB5630* NAD 83(2011) POSITION- 38 43 43.32200(N) 076 05 19.71564(W)   ADJUSTED
 AB5630* NAD 83(2011) ELLIP HT-   -29.228 (meters)        (06/27/12)   ADJUSTED
 AB5630* NAD 83(2011) EPOCH   -  2010.00
 AB5630* NAVD 88 ORTHO HEIGHT -     5.491 (meters)       18.02  (feet) ADJUSTED
 AB5630  ______________________________________________________________________
 AB5630  GEOID HEIGHT    -        -34.728 (meters)                     GEOID18
 AB5630  NAD 83(2011) X  -  1,197,809.343 (meters)                     COMP
 AB5630  NAD 83(2011) Y  - -4,836,072.488 (meters)                     COMP
 AB5630  NAD 83(2011) Z  -  3,968,848.074 (meters)                     COMP
 AB5630  LAPLACE CORR    -         -3.21  (seconds)                    DEFLEC18
 AB5630  DYNAMIC HEIGHT  -          5.487 (meters)       18.00  (feet) COMP
 AB5630  MODELED GRAVITY -    980,032.1   (mgal)                       NAVD 88
 AB5630
 AB5630  VERT ORDER      -  SECOND    CLASS I
 AB5630
 AB5630  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5630  Standards:
 AB5630         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5630            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5630  -------------------------------------------------------------------
 AB5630  NETWORK    0.55   1.06           0.24   0.21   0.54     -0.06717327
 AB5630  -------------------------------------------------------------------
 AB5630  Click here for local accuracies and other accuracy information.
 AB5630
 AB5630.The horizontal coordinates were established by GPS observations
 AB5630.and adjusted by the National Geodetic Survey in June 2012.
 AB5630
 AB5630.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5630.been affixed to the stable North American tectonic plate. See 
 AB5630.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5630
 AB5630.The horizontal coordinates are valid at the epoch date displayed above
 AB5630.which is a decimal equivalence of Year/Month/Day.
 AB5630
 AB5630.The orthometric height was determined by differential leveling and
 AB5630.adjusted by the NATIONAL GEODETIC SURVEY
 AB5630.in September 2004.
 AB5630
 AB5630.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5630.GEOID18 height accuracy estimate available here.
 AB5630
 AB5630.Click photographs - Photos may exist for this station.
 AB5630
 AB5630.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5630
 AB5630.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5630
 AB5630.The ellipsoidal height was determined by GPS observations
 AB5630.and is referenced to NAD 83.
 AB5630
 AB5630.The dynamic height is computed by dividing the NAVD 88
 AB5630.geopotential number by the normal gravity value computed on the
 AB5630.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5630.degrees latitude (g = 980.6199 gals.).
 AB5630
 AB5630.The modeled gravity was interpolated from observed gravity values.
 AB5630
 AB5630. The following values were computed from the NAD 83(2011) position.
 AB5630
 AB5630;                    North         East     Units Scale Factor Converg.
 AB5630;SPC MD       -   118,285.364   479,228.636   MT  0.99995313   +0 34 18.8
 AB5630;SPC MD       -   388,074.57  1,572,269.28   sFT  0.99995313   +0 34 18.8
 AB5630;UTM  18      - 4,287,233.537   405,357.805   MT  0.99971030   -0 40 52.5
 AB5630
 AB5630!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5630!SPC MD       -   1.00000459  x   0.99995313  =   0.99995772
 AB5630!UTM  18      -   1.00000459  x   0.99971030  =   0.99971488
 AB5630
 AB5630_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0535787233(NAD 83)
 AB5630
 AB5630|---------------------------------------------------------------------|
 AB5630| PID    Reference Object                     Distance      Geod. Az  |
 AB5630|                                                           dddmmss.s |
 AB5630| AB5629 GPS 023                             265.372 METERS 01333     |
 AB5630|---------------------------------------------------------------------|
 AB5630
 AB5630                          SUPERSEDED SURVEY CONTROL
 AB5630
 AB5630  NAD 83(2007)-  38 43 43.32226(N)    076 05 19.71642(W) AD(2002.00) 0
 AB5630  ELLIP H (02/10/07)  -29.198  (m)                       GP(2002.00)    
 AB5630  ELLIP H (08/30/02)  -29.192  (m)                       GP(       ) 4 2
 AB5630  NAD 83(1991)-  38 43 43.32214(N)    076 05 19.71620(W) AD(       ) 1
 AB5630  ELLIP H (08/02/96)  -29.200  (m)                       GP(       ) 3 1
 AB5630  NAVD 88 (08/02/96)    5.5    (m)  GEOID93  model used  GPS OBS        
 AB5630
 AB5630.Superseded values are not recommended for survey control.
 AB5630
 AB5630.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5630.See file dsdata.pdf to determine how the superseded data were derived.
 AB5630
 AB5630_MARKER: DD = SURVEY DISK
 AB5630_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5630_STAMPING: NO. GPS 024
 AB5630_MARK LOGO: MD0480
 AB5630_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5630_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5630+STABILITY: SURFACE MOTION
 AB5630_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5630+SATELLITE: SATELLITE OBSERVATIONS - September 12, 2000
 AB5630
 AB5630  HISTORY     - Date     Condition        Report By
 AB5630  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5630  HISTORY     - 20000912 GOOD             MDSHA
 AB5630
 AB5630                          STATION DESCRIPTION
 AB5630
 AB5630'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5630'STATION IS LOCATED ABOUT 3.4 MI (5.5 KM) SOUTH OF THE CENTER OF
 AB5630'EASTON.
 AB5630'
 AB5630'TO REACH FROM THE INTERSECTION OF RT 333 (OXFORD RD) AND RT 322
 AB5630'(EASTON PARKWAY), GO SOUTHWEST ON RT 333 FOR 2.35 MI (3.78 KM) TO THE
 AB5630'STATION ON THE RIGHT.
 AB5630'
 AB5630'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5630'MONUMENT FLUSH WITH THE GROUND, 40.0 FT (12.2 M) SOUTH OF THE
 AB5630'SOUTHEAST CORNER OF AN ELECTRIC TRANSFORMER, 27.7 FT (8.4 M) WEST OF
 AB5630'THE CENTERLINE OF RT 333, 63.1 FT (19.2 M) NORTH OF THE CENTERLINE OF
 AB5630'A GRAVEL DRIVE LEADING TO HOUSE NO. 6524 AND 74.1 FT (22.6 M) NORTH OF
 AB5630'TELEPHONE POLE NO. 142.
 AB5630
 AB5630                          STATION RECOVERY (2000)
 AB5630
 AB5630'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5630'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB9765 ***********************************************************************
 AB9765  DESIGNATION -  GPS 024
 AB9765  PID         -  AB9765
 AB9765  STATE/COUNTY-  MD/PRINCE GEORGES
 AB9765  COUNTRY     -  US
 AB9765  USGS QUAD   -  LAUREL (2016)
 AB9765
 AB9765                         *CURRENT SURVEY CONTROL
 AB9765  ______________________________________________________________________
 AB9765* NAD 83(2011) POSITION- 39 00 14.75345(N) 076 49 25.54152(W)   ADJUSTED
 AB9765* NAD 83(2011) ELLIP HT-    21.323 (meters)        (06/27/12)   ADJUSTED
 AB9765* NAD 83(2011) EPOCH   -  2010.00
 AB9765* NAVD 88 ORTHO HEIGHT -    53.719 (meters)      176.24  (feet) ADJUSTED
 AB9765  ______________________________________________________________________
 AB9765  GEOID HEIGHT    -        -32.407 (meters)                     GEOID18
 AB9765  NAD 83(2011) X  -  1,131,314.537 (meters)                     COMP
 AB9765  NAD 83(2011) Y  - -4,832,397.744 (meters)                     COMP
 AB9765  NAD 83(2011) Z  -  3,992,684.004 (meters)                     COMP
 AB9765  LAPLACE CORR    -         -5.48  (seconds)                    DEFLEC18
 AB9765  DYNAMIC HEIGHT  -         53.690 (meters)      176.15  (feet) COMP
 AB9765  MODELED GRAVITY -    980,088.7   (mgal)                       NAVD 88
 AB9765
 AB9765  VERT ORDER      -  SECOND    CLASS II
 AB9765
 AB9765  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB9765  Standards:
 AB9765         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB9765            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB9765  -------------------------------------------------------------------
 AB9765  NETWORK    0.61   0.78           0.27   0.22   0.40      0.05813986
 AB9765  -------------------------------------------------------------------
 AB9765  Click here for local accuracies and other accuracy information.
 AB9765
 AB9765.The horizontal coordinates were established by GPS observations
 AB9765.and adjusted by the National Geodetic Survey in June 2012.
 AB9765
 AB9765.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB9765.been affixed to the stable North American tectonic plate. See 
 AB9765.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB9765
 AB9765.The horizontal coordinates are valid at the epoch date displayed above
 AB9765.which is a decimal equivalence of Year/Month/Day.
 AB9765
 AB9765.The orthometric height was determined by differential leveling and
 AB9765.adjusted by the NATIONAL GEODETIC SURVEY
 AB9765.in September 1997.
 AB9765
 AB9765.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB9765.GEOID18 height accuracy estimate available here.
 AB9765
 AB9765.Click photographs - Photos may exist for this station.
 AB9765
 AB9765.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB9765
 AB9765.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB9765
 AB9765.The ellipsoidal height was determined by GPS observations
 AB9765.and is referenced to NAD 83.
 AB9765
 AB9765.The dynamic height is computed by dividing the NAVD 88
 AB9765.geopotential number by the normal gravity value computed on the
 AB9765.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB9765.degrees latitude (g = 980.6199 gals.).
 AB9765
 AB9765.The modeled gravity was interpolated from observed gravity values.
 AB9765
 AB9765. The following values were computed from the NAD 83(2011) position.
 AB9765
 AB9765;                    North         East     Units Scale Factor Converg.
 AB9765;SPC MD       -   148,475.883   415,265.287   MT  0.99995235   +0 06 38.2
 AB9765;SPC MD       -   487,124.63  1,362,416.20   sFT  0.99995235   +0 06 38.2
 AB9765;UTM  18      - 4,318,813.493   342,080.799   MT  0.99990708   -1 08 53.0
 AB9765
 AB9765!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB9765!SPC MD       -   0.99999665  x   0.99995235  =   0.99994900
 AB9765!UTM  18      -   0.99999665  x   0.99990708  =   0.99990373
 AB9765
 AB9765:                Primary Azimuth Mark                     Grid Az
 AB9765:SPC MD       -  GPS 025                                  066 28 11.3
 AB9765:UTM  18      -  GPS 025                                  067 43 42.5
 AB9765
 AB9765_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4208018813(NAD 83)
 AB9765
 AB9765|---------------------------------------------------------------------|
 AB9765| PID    Reference Object                     Distance      Geod. Az  |
 AB9765|                                                           dddmmss.s |
 AB9765| AB9766 GPS 025                             APPROX. 0.7 KM 0663449.5 |
 AB9765|---------------------------------------------------------------------|
 AB9765
 AB9765                          SUPERSEDED SURVEY CONTROL
 AB9765
 AB9765  NAD 83(2007)-  39 00 14.75376(N)    076 49 25.54222(W) AD(2002.00) 0
 AB9765  ELLIP H (02/10/07)   21.338  (m)                       GP(2002.00)    
 AB9765  ELLIP H (08/30/02)   21.329  (m)                       GP(       ) 4 2
 AB9765  NAD 83(1991)-  39 00 14.75361(N)    076 49 25.54204(W) AD(       ) 1
 AB9765  ELLIP H (01/10/97)   21.399  (m)                       GP(       ) 4 1
 AB9765  NAVD 88 (01/10/97)   53.7    (m)  GEOID93  model used  GPS OBS        
 AB9765
 AB9765.Superseded values are not recommended for survey control.
 AB9765
 AB9765.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB9765.See file dsdata.pdf to determine how the superseded data were derived.
 AB9765
 AB9765_MARKER: A = ALUMINUM MARKER
 AB9765_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB9765_STAMPING: NASA-GSFC 220-FMD GPS-024 MARCH 1996
 AB9765_MARK LOGO: NASA
 AB9765_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB9765_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB9765+STABILITY: SURFACE MOTION
 AB9765_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB9765+SATELLITE: SATELLITE OBSERVATIONS - April 15, 1996
 AB9765
 AB9765  HISTORY     - Date     Condition        Report By
 AB9765  HISTORY     - 1996     MONUMENTED       LOCSUR
 AB9765  HISTORY     - 19960415 GOOD             RICE
 AB9765
 AB9765                          STATION DESCRIPTION
 AB9765
 AB9765'DESCRIBED BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1996 (RJM)
 AB9765'AT GODDARD SPACE FLIGHT CENTER 2 MILES (3.2 KM) EAST OF GREENBELT
 AB9765'MARYLAND, 3 MILES (4.8 KM) WEST OF BOWIE MARYLAND, 2 MILES (3.2 KM)
 AB9765'EAST OF THE BALTIMORE PARKWAY ALONG ROUTE 193.  AT THE MAGNETIC TEST
 AB9765'SITE.  4.8 M (15.7 FT) SOUTH OF THE SOUTHWEST CORNER OF BUILDING 304,
 AB9765'8.2 M (26.9 FT) EAST OF THE EDGE OF PAVEMENT, 0.4 M (1.3 FT) WEST OF A
 AB9765'WITNESS POST.  TO REACH THE STATION FROM THE INTERSECTION OF GREENBELT
 AB9765'ROAD AND GOOD LUCK ROAD PROCEED 1.8 KM (1.10 MI) NORTH ON GOOD LUCK
 AB9765'ROAD TO THE ENTRANCE TO THE MAGNETIC TEST SITE, TURN LEFT THROUGH A
 AB9765'GATE AND GO NORTH 0.2 KM (0.10 MI) TO THE INTERSECTION OF A UNMARKED
 AB9765'ROAD, AND THE STATION AHEAD IN THE GRASS.  ACCESS SHOULD BE
 AB9765'COORDINATED IN ADVANCE THROUGH THE OFFICE OF THE CHIEF OF FACILITIES
 AB9765'MANAGEMENT AT GODDARD SPACE FLIGHT CENTER (301-286-8931) .
 AB9765
 AB9765                          STATION RECOVERY (1996)
 AB9765
 AB9765'RECOVERY NOTE BY RICE ASSOCIATES PC 1996 (RJM)
 AB9765'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5631 ***********************************************************************
 AB5631  DESIGNATION -  GPS 025
 AB5631  PID         -  AB5631
 AB5631  STATE/COUNTY-  MD/TALBOT
 AB5631  COUNTRY     -  US
 AB5631  USGS QUAD   -  TRAPPE (2016)
 AB5631
 AB5631                         *CURRENT SURVEY CONTROL
 AB5631  ______________________________________________________________________
 AB5631* NAD 83(2011) POSITION- 38 44 32.09418(N) 076 05 18.42046(W)   ADJUSTED
 AB5631* NAD 83(2011) ELLIP HT-   -29.220 (meters)        (06/27/12)   ADJUSTED
 AB5631* NAD 83(2011) EPOCH   -  2010.00
 AB5631* NAVD 88 ORTHO HEIGHT -     5.483 (meters)       17.99  (feet) ADJUSTED
 AB5631  ______________________________________________________________________
 AB5631  GEOID HEIGHT    -        -34.704 (meters)                     GEOID18
 AB5631  NAD 83(2011) X  -  1,197,613.459 (meters)                     COMP
 AB5631  NAD 83(2011) Y  - -4,835,151.519 (meters)                     COMP
 AB5631  NAD 83(2011) Z  -  3,970,021.219 (meters)                     COMP
 AB5631  LAPLACE CORR    -         -3.25  (seconds)                    DEFLEC18
 AB5631  DYNAMIC HEIGHT  -          5.479 (meters)       17.98  (feet) COMP
 AB5631  MODELED GRAVITY -    980,033.5   (mgal)                       NAVD 88
 AB5631
 AB5631  VERT ORDER      -  SECOND    CLASS I
 AB5631
 AB5631  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5631  Standards:
 AB5631         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5631            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5631  -------------------------------------------------------------------
 AB5631  NETWORK    0.41   1.12           0.18   0.15   0.57     -0.20021432
 AB5631  -------------------------------------------------------------------
 AB5631  Click here for local accuracies and other accuracy information.
 AB5631
 AB5631.The horizontal coordinates were established by GPS observations
 AB5631.and adjusted by the National Geodetic Survey in June 2012.
 AB5631
 AB5631.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5631.been affixed to the stable North American tectonic plate. See 
 AB5631.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5631
 AB5631.The horizontal coordinates are valid at the epoch date displayed above
 AB5631.which is a decimal equivalence of Year/Month/Day.
 AB5631
 AB5631.The orthometric height was determined by differential leveling and
 AB5631.adjusted by the NATIONAL GEODETIC SURVEY
 AB5631.in September 2004.
 AB5631
 AB5631.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5631.GEOID18 height accuracy estimate available here.
 AB5631
 AB5631.Click photographs - Photos may exist for this station.
 AB5631
 AB5631.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5631
 AB5631.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5631
 AB5631.The ellipsoidal height was determined by GPS observations
 AB5631.and is referenced to NAD 83.
 AB5631
 AB5631.The dynamic height is computed by dividing the NAVD 88
 AB5631.geopotential number by the normal gravity value computed on the
 AB5631.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5631.degrees latitude (g = 980.6199 gals.).
 AB5631
 AB5631.The modeled gravity was interpolated from observed gravity values.
 AB5631
 AB5631. The following values were computed from the NAD 83(2011) position.
 AB5631
 AB5631;                    North         East     Units Scale Factor Converg.
 AB5631;SPC MD       -   119,789.481   479,244.900   MT  0.99995255   +0 34 19.6
 AB5631;SPC MD       -   393,009.32  1,572,322.64   sFT  0.99995255   +0 34 19.6
 AB5631;UTM  18      - 4,288,736.574   405,406.952   MT  0.99971018   -0 40 52.4
 AB5631
 AB5631!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5631!SPC MD       -   1.00000458  x   0.99995255  =   0.99995713
 AB5631!UTM  18      -   1.00000458  x   0.99971018  =   0.99971476
 AB5631
 AB5631:                Primary Azimuth Mark                     Grid Az
 AB5631:SPC MD       -  GPS 026                                  113 54 40.2
 AB5631:UTM  18      -  GPS 026                                  115 09 52.2
 AB5631
 AB5631_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0540688736(NAD 83)
 AB5631
 AB5631|---------------------------------------------------------------------|
 AB5631| PID    Reference Object                     Distance      Geod. Az  |
 AB5631|                                                           dddmmss.s |
 AB5631| AB5632 GPS 026                             484.586 METERS 1142859.8 |
 AB5631| AB5634 GPS 028                             APPROX. 1.1 KM 2894437.1 |
 AB5631|---------------------------------------------------------------------|
 AB5631
 AB5631                          SUPERSEDED SURVEY CONTROL
 AB5631
 AB5631  NAD 83(2007)-  38 44 32.09443(N)    076 05 18.42117(W) AD(2002.00) 0
 AB5631  ELLIP H (02/10/07)  -29.189  (m)                       GP(2002.00)    
 AB5631  ELLIP H (08/30/02)  -29.163  (m)                       GP(       ) 4 2
 AB5631  NAD 83(1991)-  38 44 32.09478(N)    076 05 18.42136(W) AD(       ) 1
 AB5631  ELLIP H (08/02/96)  -29.150  (m)                       GP(       ) 3 1
 AB5631  NAVD 88 (08/02/96)    5.5    (m)  GEOID93  model used  GPS OBS        
 AB5631
 AB5631.Superseded values are not recommended for survey control.
 AB5631
 AB5631.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5631.See file dsdata.pdf to determine how the superseded data were derived.
 AB5631
 AB5631_MARKER: DD = SURVEY DISK
 AB5631_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5631_STAMPING: NO. GPS 025
 AB5631_MARK LOGO: MD0480
 AB5631_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5631_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5631+STABILITY: SURFACE MOTION
 AB5631_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5631+SATELLITE: SATELLITE OBSERVATIONS - September 12, 2000
 AB5631
 AB5631  HISTORY     - Date     Condition        Report By
 AB5631  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5631  HISTORY     - 20000912 GOOD             MDSHA
 AB5631
 AB5631                          STATION DESCRIPTION
 AB5631
 AB5631'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5631'THE STATION IS LOCATED ABOUT 2.4 MI (3.9 KM) SOUTH OF THE CENTER OF
 AB5631'EASTON.
 AB5631'
 AB5631'TO REACH THE STATION FROM THE INTERSECTION OF RT 333 (OXFORD ROAD)
 AB5631'AND RT 322 (EASTON PARKWAY), GO SOUTHWEST ON RT 333 FOR 1.4 MI
 AB5631'(2.3 KM) TO THE INTERSECTION WITH OAKLANDS DRIVE TO THE RIGHT, COOKES
 AB5631'HOPE ROAD AND THE STATION TO THE LEFT.
 AB5631'
 AB5631'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5631'MONUMENT SET FLUSH WITH THE GROUND, 47.8 FT (14.6 M) SOUTHEAST OF
 AB5631'THE CENTERLINE OF RT 333, 40.2 FT (12.3 M)SOUTHWEST OF A GRANITE
 AB5631'SIGN, 25.3 FT (7.7 M) NORTH OF THE CENTERLINE OF COOKES HOPE ROAD AND
 AB5631'59.9 FT (18.3 M) WEST OF THE SOUTHWEST CORNER OF A WOODEN SPLIT RAIL
 AB5631'FENCE.
 AB5631
 AB5631                          STATION RECOVERY (2000)
 AB5631
 AB5631'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5631'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB9766 ***********************************************************************
 AB9766  DESIGNATION -  GPS 025
 AB9766  PID         -  AB9766
 AB9766  STATE/COUNTY-  MD/PRINCE GEORGES
 AB9766  COUNTRY     -  US
 AB9766  USGS QUAD   -  LAUREL (2016)
 AB9766
 AB9766                         *CURRENT SURVEY CONTROL
 AB9766  ______________________________________________________________________
 AB9766* NAD 83(2011) POSITION- 39 00 23.52839(N) 076 48 59.57434(W)   ADJUSTED
 AB9766* NAD 83(2011) ELLIP HT-    25.162 (meters)        (06/27/12)   ADJUSTED
 AB9766* NAD 83(2011) EPOCH   -  2010.00
 AB9766* NAVD 88 ORTHO HEIGHT -    57.570 (meters)      188.88  (feet) ADJUSTED
 AB9766  ______________________________________________________________________
 AB9766  GEOID HEIGHT    -        -32.425 (meters)                     GEOID18
 AB9766  NAD 83(2011) X  -  1,131,884.727 (meters)                     COMP
 AB9766  NAD 83(2011) Y  - -4,832,092.362 (meters)                     COMP
 AB9766  NAD 83(2011) Z  -  3,992,896.700 (meters)                     COMP
 AB9766  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 AB9766  DYNAMIC HEIGHT  -         57.539 (meters)      188.78  (feet) COMP
 AB9766  MODELED GRAVITY -    980,088.5   (mgal)                       NAVD 88
 AB9766
 AB9766  VERT ORDER      -  SECOND    CLASS II
 AB9766
 AB9766  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB9766  Standards:
 AB9766         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB9766            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB9766  -------------------------------------------------------------------
 AB9766  NETWORK    0.85   0.94           0.37   0.31   0.48      0.36182992
 AB9766  -------------------------------------------------------------------
 AB9766  Click here for local accuracies and other accuracy information.
 AB9766
 AB9766.The horizontal coordinates were established by GPS observations
 AB9766.and adjusted by the National Geodetic Survey in June 2012.
 AB9766
 AB9766.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB9766.been affixed to the stable North American tectonic plate. See 
 AB9766.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB9766
 AB9766.The horizontal coordinates are valid at the epoch date displayed above
 AB9766.which is a decimal equivalence of Year/Month/Day.
 AB9766
 AB9766.The orthometric height was determined by differential leveling and
 AB9766.adjusted by the NATIONAL GEODETIC SURVEY
 AB9766.in September 1997.
 AB9766
 AB9766.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB9766.GEOID18 height accuracy estimate available here.
 AB9766
 AB9766.Click photographs - Photos may exist for this station.
 AB9766
 AB9766.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB9766
 AB9766.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB9766
 AB9766.The ellipsoidal height was determined by GPS observations
 AB9766.and is referenced to NAD 83.
 AB9766
 AB9766.The dynamic height is computed by dividing the NAVD 88
 AB9766.geopotential number by the normal gravity value computed on the
 AB9766.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB9766.degrees latitude (g = 980.6199 gals.).
 AB9766
 AB9766.The modeled gravity was interpolated from observed gravity values.
 AB9766
 AB9766. The following values were computed from the NAD 83(2011) position.
 AB9766
 AB9766;                    North         East     Units Scale Factor Converg.
 AB9766;SPC MD       -   148,747.699   415,889.522   MT  0.99995244   +0 06 54.5
 AB9766;SPC MD       -   488,016.41  1,364,464.21   sFT  0.99995244   +0 06 54.5
 AB9766;UTM  18      - 4,319,071.519   342,710.824   MT  0.99990464   -1 08 36.9
 AB9766
 AB9766!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB9766!SPC MD       -   0.99999605  x   0.99995244  =   0.99994849
 AB9766!UTM  18      -   0.99999605  x   0.99990464  =   0.99990069
 AB9766
 AB9766:                Primary Azimuth Mark                     Grid Az
 AB9766:SPC MD       -  GPS 024                                  246 28 11.4
 AB9766:UTM  18      -  GPS 024                                  247 43 42.8
 AB9766
 AB9766_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4271019071(NAD 83)
 AB9766
 AB9766|---------------------------------------------------------------------|
 AB9766| PID    Reference Object                     Distance      Geod. Az  |
 AB9766|                                                           dddmmss.s |
 AB9766| AB9765 GPS 024                             APPROX. 0.7 KM 2463505.9 |
 AB9766|---------------------------------------------------------------------|
 AB9766
 AB9766                          SUPERSEDED SURVEY CONTROL
 AB9766
 AB9766  NAD 83(2007)-  39 00 23.52869(N)    076 48 59.57504(W) AD(2002.00) 0
 AB9766  ELLIP H (02/10/07)   25.177  (m)                       GP(2002.00)    
 AB9766  ELLIP H (08/30/02)   25.171  (m)                       GP(       ) 4 2
 AB9766  NAD 83(1991)-  39 00 23.52859(N)    076 48 59.57490(W) AD(       ) 1
 AB9766  ELLIP H (01/10/97)   25.240  (m)                       GP(       ) 4 1
 AB9766  NAVD 88 (01/10/97)   57.6    (m)  GEOID93  model used  GPS OBS        
 AB9766
 AB9766.Superseded values are not recommended for survey control.
 AB9766
 AB9766.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB9766.See file dsdata.pdf to determine how the superseded data were derived.
 AB9766
 AB9766_MARKER: A = ALUMINUM MARKER
 AB9766_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB9766_STAMPING: NASA-GSFC 220-FMD GPS-025 MARCH 1996
 AB9766_MARK LOGO: NASA
 AB9766_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB9766_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB9766+STABILITY: SURFACE MOTION
 AB9766_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB9766+SATELLITE: SATELLITE OBSERVATIONS - April 15, 1996
 AB9766
 AB9766  HISTORY     - Date     Condition        Report By
 AB9766  HISTORY     - 1996     MONUMENTED       LOCSUR
 AB9766  HISTORY     - 19960415 GOOD             RICE
 AB9766
 AB9766                          STATION DESCRIPTION
 AB9766
 AB9766'DESCRIBED BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1996 (RJM)
 AB9766'AT GODDARD SPACE FLIGHT CENTER 2 MILES (3.2 KM) EAST OF GREENBELT
 AB9766'MARYLAND, 3 MILES (4.8 KM) WEST OF BOWIE, 2 MILES (3.2 KM) EAST OF THE
 AB9766'BALTIMORE WASHINGTON PARKWAY ALONG ROUTE 193.  AT THE PROPULSION TEST
 AB9766'SITE.  2.6 M (8.5 FT) SOUTHWEST OF THE EDGE OF PAVEMENT OF A PARKING
 AB9766'LOT, 8.7 M (28.5 FT) SOUTHEAST OF A UTILITY POLE, 0.4 M (1.3 FT)
 AB9766'NORTHEAST OF A WITNESS POST.  TO REACH THE STATION FROM THE
 AB9766'INTERSECTION OF GREENBELT ROAD AND GOOD LUCK ROAD PROCEED 2.6 KM (1.60
 AB9766'MI) NORTH ON GOOD LUCK ROAD TO THE ENTRANCE OF THE PROPULSION TEST
 AB9766'SITE, TURN LEFT THROUGH A GATE AND GO NORTH 0.2 KM (0.10 MI) TO THE
 AB9766'POINT ON THE LEFT.  ACCESS SHOULD BE COORDINATED IN ADVANCE THROUGH
 AB9766'THE OFFICE OF THE CHIEF OF FACILITIES MANAGEMENT AT GODDARD SPACE
 AB9766'FLIGHT CENTER (301-286-8931) .
 AB9766
 AB9766                          STATION RECOVERY (1996)
 AB9766
 AB9766'RECOVERY NOTE BY RICE ASSOCIATES PC 1996 (RJM)
 AB9766'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5632 ***********************************************************************
 AB5632  DESIGNATION -  GPS 026
 AB5632  PID         -  AB5632
 AB5632  STATE/COUNTY-  MD/TALBOT
 AB5632  COUNTRY     -  US
 AB5632  USGS QUAD   -  TRAPPE (2016)
 AB5632
 AB5632                         *CURRENT SURVEY CONTROL
 AB5632  ______________________________________________________________________
 AB5632* NAD 83(2011) POSITION- 38 44 25.58114(N) 076 05 00.15948(W)   ADJUSTED
 AB5632* NAD 83(2011) ELLIP HT-   -30.013 (meters)        (06/27/12)   ADJUSTED
 AB5632* NAD 83(2011) EPOCH   -  2010.00
 AB5632* NAVD 88 ORTHO HEIGHT -     4.705 (meters)       15.44  (feet) ADJUSTED
 AB5632  ______________________________________________________________________
 AB5632  GEOID HEIGHT    -        -34.716 (meters)                     GEOID18
 AB5632  NAD 83(2011) X  -  1,198,071.599 (meters)                     COMP
 AB5632  NAD 83(2011) Y  - -4,835,166.869 (meters)                     COMP
 AB5632  NAD 83(2011) Z  -  3,969,864.075 (meters)                     COMP
 AB5632  LAPLACE CORR    -         -3.23  (seconds)                    DEFLEC18
 AB5632  DYNAMIC HEIGHT  -          4.702 (meters)       15.43  (feet) COMP
 AB5632  MODELED GRAVITY -    980,033.1   (mgal)                       NAVD 88
 AB5632
 AB5632  VERT ORDER      -  SECOND    CLASS I
 AB5632
 AB5632  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5632  Standards:
 AB5632         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5632            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5632  -------------------------------------------------------------------
 AB5632  NETWORK    0.47   1.41           0.19   0.19   0.72     -0.16516522
 AB5632  -------------------------------------------------------------------
 AB5632  Click here for local accuracies and other accuracy information.
 AB5632
 AB5632.The horizontal coordinates were established by GPS observations
 AB5632.and adjusted by the National Geodetic Survey in June 2012.
 AB5632
 AB5632.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5632.been affixed to the stable North American tectonic plate. See 
 AB5632.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5632
 AB5632.The horizontal coordinates are valid at the epoch date displayed above
 AB5632.which is a decimal equivalence of Year/Month/Day.
 AB5632
 AB5632.The orthometric height was determined by differential leveling and
 AB5632.adjusted by the NATIONAL GEODETIC SURVEY
 AB5632.in September 2004.
 AB5632
 AB5632.No vertical observational check was made to the station.
 AB5632
 AB5632.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5632.GEOID18 height accuracy estimate available here.
 AB5632
 AB5632.Click photographs - Photos may exist for this station.
 AB5632
 AB5632.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5632
 AB5632.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5632
 AB5632.The ellipsoidal height was determined by GPS observations
 AB5632.and is referenced to NAD 83.
 AB5632
 AB5632.The dynamic height is computed by dividing the NAVD 88
 AB5632.geopotential number by the normal gravity value computed on the
 AB5632.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5632.degrees latitude (g = 980.6199 gals.).
 AB5632
 AB5632.The modeled gravity was interpolated from observed gravity values.
 AB5632
 AB5632. The following values were computed from the NAD 83(2011) position.
 AB5632
 AB5632;                    North         East     Units Scale Factor Converg.
 AB5632;SPC MD       -   119,593.078   479,687.876   MT  0.99995262   +0 34 31.1
 AB5632;SPC MD       -   392,364.96  1,573,775.97   sFT  0.99995262   +0 34 31.1
 AB5632;UTM  18      - 4,288,530.579   405,845.418   MT  0.99970917   -0 40 40.9
 AB5632
 AB5632!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5632!SPC MD       -   1.00000471  x   0.99995262  =   0.99995733
 AB5632!UTM  18      -   1.00000471  x   0.99970917  =   0.99971388
 AB5632
 AB5632:                Primary Azimuth Mark                     Grid Az
 AB5632:SPC MD       -  GPS 020                                  101 10 24.3
 AB5632:UTM  18      -  GPS 020                                  102 25 36.3
 AB5632
 AB5632_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0584588530(NAD 83)
 AB5632
 AB5632|---------------------------------------------------------------------|
 AB5632| PID    Reference Object                     Distance      Geod. Az  |
 AB5632|                                                           dddmmss.s |
 AB5632| AB5626 GPS 020                             APPROX. 1.2 KM 1014455.4 |
 AB5632| AB5625 GPS 019                             APPROX. 1.4 KM 1140700.4 |
 AB5632| AB5631 GPS 025                             484.586 METERS 2942911.2 |
 AB5632|---------------------------------------------------------------------|
 AB5632
 AB5632                          SUPERSEDED SURVEY CONTROL
 AB5632
 AB5632  NAD 83(2007)-  38 44 25.58138(N)    076 05 00.16019(W) AD(2002.00) 0
 AB5632  ELLIP H (02/10/07)  -29.982  (m)                       GP(2002.00)    
 AB5632  ELLIP H (08/30/02)  -29.962  (m)                       GP(       ) 4 2
 AB5632  NAD 83(1991)-  38 44 25.58159(N)    076 05 00.16039(W) AD(       ) 1
 AB5632  ELLIP H (08/02/96)  -29.945  (m)                       GP(       ) 3 1
 AB5632  NAVD 88 (08/02/96)    4.7    (m)  GEOID93  model used  GPS OBS        
 AB5632
 AB5632.Superseded values are not recommended for survey control.
 AB5632
 AB5632.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5632.See file dsdata.pdf to determine how the superseded data were derived.
 AB5632
 AB5632_MARKER: DD = SURVEY DISK
 AB5632_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5632_STAMPING: NO. GPS 026
 AB5632_MARK LOGO: MD0480
 AB5632_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5632_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5632+STABILITY: SURFACE MOTION
 AB5632_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5632+SATELLITE: SATELLITE OBSERVATIONS - September 12, 2000
 AB5632
 AB5632  HISTORY     - Date     Condition        Report By
 AB5632  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5632  HISTORY     - 20000912 GOOD             MDSHA
 AB5632
 AB5632                          STATION DESCRIPTION
 AB5632
 AB5632'DESCRIBED BY EASTON UTILITIES 1996 (BS)
 AB5632'THE STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) SOUTH OF THE CENTER OF
 AB5632'EASTON.
 AB5632'
 AB5632'TO REACH THE STATION FROM THE INTERSECTION OF RT 333 (OXFORD ROAD)
 AB5632'AND RT 322 (EASTON PARKWAY), GO SOUTHWEST ON RT 333 FOR 1.4 MI
 AB5632'(2.3 KM) TO THE INTERSECTION WITH OAKLANDS DRIVE TO THE RIGHT AND
 AB5632'COOKES HOPE ROAD TO THE LEFT.  TURN LEFT ON COOKES HOPE ROAD AND GO
 AB5632'EAST FOR 0.35 MI (0.56 KM) TO THE STATION ON THE RIGHT.
 AB5632'
 AB5632'THE STATION MARK IS SET IN THE TOP OF 10 IN DIAMETER CONCRETE
 AB5632'MONUMENT FLUSH WITH THE GROUND, 268.0 FT (81.7 M) EAST OF THE SOUTH
 AB5632'END OF THE EASTERNMOST CULVERT UNDER THE ROAD, 23.4 FT (7.1 M) SOUTH
 AB5632'OF THE CENTERLINE OF COOKES HOPE ROAD AND 224.4 FT (68.4 M) SOUTHWEST
 AB5632'OF TELEPHONE PEDESTAL NO. 5.
 AB5632
 AB5632                          STATION RECOVERY (2000)
 AB5632
 AB5632'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5632'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5633 ***********************************************************************
 AB5633  DESIGNATION -  GPS 027
 AB5633  PID         -  AB5633
 AB5633  STATE/COUNTY-  MD/TALBOT
 AB5633  COUNTRY     -  US
 AB5633  USGS QUAD   -  TRAPPE (2016)
 AB5633
 AB5633                         *CURRENT SURVEY CONTROL
 AB5633  ______________________________________________________________________
 AB5633* NAD 83(2011) POSITION- 38 44 38.47767(N) 076 06 14.14106(W)   ADJUSTED
 AB5633* NAD 83(2011) ELLIP HT-   -30.285 (meters)        (06/27/12)   ADJUSTED
 AB5633* NAD 83(2011) EPOCH   -  2010.00
 AB5633* NAVD 88 ORTHO HEIGHT -     4.385 (meters)       14.39  (feet) ADJUSTED
 AB5633  ______________________________________________________________________
 AB5633  GEOID HEIGHT    -        -34.674 (meters)                     GEOID18
 AB5633  NAD 83(2011) X  -  1,196,277.458 (meters)                     COMP
 AB5633  NAD 83(2011) Y  - -4,835,354.477 (meters)                     COMP
 AB5633  NAD 83(2011) Z  -  3,970,174.082 (meters)                     COMP
 AB5633  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 AB5633  DYNAMIC HEIGHT  -          4.383 (meters)       14.38  (feet) COMP
 AB5633  MODELED GRAVITY -    980,034.2   (mgal)                       NAVD 88
 AB5633
 AB5633  VERT ORDER      -  SECOND    CLASS I
 AB5633
 AB5633  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5633  Standards:
 AB5633         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5633            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5633  -------------------------------------------------------------------
 AB5633  NETWORK    0.70   1.16           0.33   0.22   0.59      0.20058635
 AB5633  -------------------------------------------------------------------
 AB5633  Click here for local accuracies and other accuracy information.
 AB5633
 AB5633.The horizontal coordinates were established by GPS observations
 AB5633.and adjusted by the National Geodetic Survey in June 2012.
 AB5633
 AB5633.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5633.been affixed to the stable North American tectonic plate. See 
 AB5633.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5633
 AB5633.The horizontal coordinates are valid at the epoch date displayed above
 AB5633.which is a decimal equivalence of Year/Month/Day.
 AB5633
 AB5633.The orthometric height was determined by differential leveling and
 AB5633.adjusted by the NATIONAL GEODETIC SURVEY
 AB5633.in September 2004.
 AB5633
 AB5633.No vertical observational check was made to the station.
 AB5633
 AB5633.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5633.GEOID18 height accuracy estimate available here.
 AB5633
 AB5633.Click photographs - Photos may exist for this station.
 AB5633
 AB5633.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5633
 AB5633.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5633
 AB5633.The ellipsoidal height was determined by GPS observations
 AB5633.and is referenced to NAD 83.
 AB5633
 AB5633.The dynamic height is computed by dividing the NAVD 88
 AB5633.geopotential number by the normal gravity value computed on the
 AB5633.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5633.degrees latitude (g = 980.6199 gals.).
 AB5633
 AB5633.The modeled gravity was interpolated from observed gravity values.
 AB5633
 AB5633. The following values were computed from the NAD 83(2011) position.
 AB5633
 AB5633;                    North         East     Units Scale Factor Converg.
 AB5633;SPC MD       -   119,972.983   477,897.449   MT  0.99995248   +0 33 44.7
 AB5633;SPC MD       -   393,611.36  1,567,901.88   sFT  0.99995248   +0 33 44.7
 AB5633;UTM  18      - 4,288,949.454   404,064.159   MT  0.99971333   -0 41 27.4
 AB5633
 AB5633!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5633!SPC MD       -   1.00000475  x   0.99995248  =   0.99995723
 AB5633!UTM  18      -   1.00000475  x   0.99971333  =   0.99971808
 AB5633
 AB5633_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0406488949(NAD 83)
 AB5633
 AB5633|---------------------------------------------------------------------|
 AB5633| PID    Reference Object                     Distance      Geod. Az  |
 AB5633|                                                           dddmmss.s |
 AB5633| AB5634 GPS 028                             376.595 METERS 06406     |
 AB5633|---------------------------------------------------------------------|
 AB5633
 AB5633                          SUPERSEDED SURVEY CONTROL
 AB5633
 AB5633  NAD 83(2007)-  38 44 38.47793(N)    076 06 14.14181(W) AD(2002.00) 0
 AB5633  ELLIP H (02/10/07)  -30.254  (m)                       GP(2002.00)    
 AB5633  ELLIP H (08/30/02)  -30.237  (m)                       GP(       ) 4 2
 AB5633  NAD 83(1991)-  38 44 38.47815(N)    076 06 14.14167(W) AD(       ) 1
 AB5633  ELLIP H (08/02/96)  -30.244  (m)                       GP(       ) 3 1
 AB5633  NAVD 88 (08/02/96)    4.4    (m)  GEOID93  model used  GPS OBS        
 AB5633
 AB5633.Superseded values are not recommended for survey control.
 AB5633
 AB5633.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5633.See file dsdata.pdf to determine how the superseded data were derived.
 AB5633
 AB5633_MARKER: DD = SURVEY DISK
 AB5633_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5633_STAMPING: NO. GPS 027
 AB5633_MARK LOGO: MD0480
 AB5633_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5633_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5633+STABILITY: SURFACE MOTION
 AB5633_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5633+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2002
 AB5633
 AB5633  HISTORY     - Date     Condition        Report By
 AB5633  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5633  HISTORY     - 20000912 GOOD             MDSHA
 AB5633  HISTORY     - 20020529 GOOD             USPSQD
 AB5633
 AB5633                          STATION DESCRIPTION
 AB5633
 AB5633'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5633'THE STATION IS LOCATED ABOUT 2.75 MI (4.43 KM) SOUTHWEST OF THE CENTER
 AB5633'OF EASTON.
 AB5633'
 AB5633'TO REACH FROM THE INTERSECTION OF RT 333 (OXFORD ROAD) AND RT 322
 AB5633'(EASTON PARKWAY), GO SOUTHWEST ON RT 333 FOR 0.8 MI (1.3 KM) TO THE
 AB5633'INTERSECTION WITH CEDAR POINT LANE.  TURN RIGHT AND GO SOUTHWEST ON
 AB5633'CEDAR POINT ROAD FOR 1.05 MI (1.69 KM) TO THE INTERSECTION WITH
 AB5633'RIPLEY ROAD AND THE STATION ON THE LEFT.
 AB5633'
 AB5633'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5633'MONUMENT FLUSH WITH THE GROUND, 54.8 FT (16.7 M) EAST OF POWER POLE
 AB5633'NO.32-203, 21.5 FT (6.6 M) SOUTHEAST OF THE CENTERLINE OF CEDAR
 AB5633'POINT ROAD AND 23.0 FT (7.0 M) WEST OF THE CENTERLINE OF RIPLEY ROAD.
 AB5633
 AB5633                          STATION RECOVERY (2000)
 AB5633
 AB5633'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5633'RECOVERED AS DESCRIBED.
 AB5633
 AB5633                          STATION RECOVERY (2002)
 AB5633
 AB5633'RECOVERY NOTE BY US POWER SQUADRON 2002 (KGS)
 AB5633'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5634 ***********************************************************************
 AB5634  DESIGNATION -  GPS 028
 AB5634  PID         -  AB5634
 AB5634  STATE/COUNTY-  MD/TALBOT
 AB5634  COUNTRY     -  US
 AB5634  USGS QUAD   -  TRAPPE (2016)
 AB5634
 AB5634                         *CURRENT SURVEY CONTROL
 AB5634  ______________________________________________________________________
 AB5634* NAD 83(2011) POSITION- 38 44 43.81048(N) 076 06 00.11175(W)   ADJUSTED
 AB5634* NAD 83(2011) ELLIP HT-   -29.798 (meters)        (06/27/12)   ADJUSTED
 AB5634* NAD 83(2011) EPOCH   -  2010.00
 AB5634* NAVD 88 ORTHO HEIGHT -     4.870 (meters)       15.98  (feet) ADJUSTED
 AB5634  ______________________________________________________________________
 AB5634  GEOID HEIGHT    -        -34.678 (meters)                     GEOID18
 AB5634  NAD 83(2011) X  -  1,196,581.704 (meters)                     COMP
 AB5634  NAD 83(2011) Y  - -4,835,173.565 (meters)                     COMP
 AB5634  NAD 83(2011) Z  -  3,970,302.643 (meters)                     COMP
 AB5634  LAPLACE CORR    -         -3.31  (seconds)                    DEFLEC18
 AB5634  DYNAMIC HEIGHT  -          4.867 (meters)       15.97  (feet) COMP
 AB5634  MODELED GRAVITY -    980,034.2   (mgal)                       NAVD 88
 AB5634
 AB5634  VERT ORDER      -  SECOND    CLASS I
 AB5634
 AB5634  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5634  Standards:
 AB5634         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5634            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5634  -------------------------------------------------------------------
 AB5634  NETWORK    0.42   1.00           0.18   0.16   0.51     -0.15888393
 AB5634  -------------------------------------------------------------------
 AB5634  Click here for local accuracies and other accuracy information.
 AB5634
 AB5634.The horizontal coordinates were established by GPS observations
 AB5634.and adjusted by the National Geodetic Survey in June 2012.
 AB5634
 AB5634.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5634.been affixed to the stable North American tectonic plate. See 
 AB5634.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5634
 AB5634.The horizontal coordinates are valid at the epoch date displayed above
 AB5634.which is a decimal equivalence of Year/Month/Day.
 AB5634
 AB5634.The orthometric height was determined by differential leveling and
 AB5634.adjusted by the NATIONAL GEODETIC SURVEY
 AB5634.in September 2004.
 AB5634
 AB5634.No vertical observational check was made to the station.
 AB5634
 AB5634.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5634.GEOID18 height accuracy estimate available here.
 AB5634
 AB5634.Click photographs - Photos may exist for this station.
 AB5634
 AB5634.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5634
 AB5634.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5634
 AB5634.The ellipsoidal height was determined by GPS observations
 AB5634.and is referenced to NAD 83.
 AB5634
 AB5634.The dynamic height is computed by dividing the NAVD 88
 AB5634.geopotential number by the normal gravity value computed on the
 AB5634.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5634.degrees latitude (g = 980.6199 gals.).
 AB5634
 AB5634.The modeled gravity was interpolated from observed gravity values.
 AB5634
 AB5634. The following values were computed from the NAD 83(2011) position.
 AB5634
 AB5634;                    North         East     Units Scale Factor Converg.
 AB5634;SPC MD       -   120,140.744   478,234.594   MT  0.99995242   +0 33 53.5
 AB5634;SPC MD       -   394,161.76  1,569,008.00   sFT  0.99995242   +0 33 53.5
 AB5634;UTM  18      - 4,289,109.762   404,404.812   MT  0.99971253   -0 41 18.7
 AB5634
 AB5634!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5634!SPC MD       -   1.00000468  x   0.99995242  =   0.99995710
 AB5634!UTM  18      -   1.00000468  x   0.99971253  =   0.99971720
 AB5634
 AB5634:                Primary Azimuth Mark                     Grid Az
 AB5634:SPC MD       -  GPS 029                                  343 33 30.6
 AB5634:UTM  18      -  GPS 029                                  344 48 42.8
 AB5634
 AB5634_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0440489109(NAD 83)
 AB5634
 AB5634|---------------------------------------------------------------------|
 AB5634| PID    Reference Object                     Distance      Geod. Az  |
 AB5634|                                                           dddmmss.s |
 AB5634| AB5635 GPS 029                             APPROX. 1.7 KM 3440724.1 |
 AB5634|---------------------------------------------------------------------|
 AB5634
 AB5634                          SUPERSEDED SURVEY CONTROL
 AB5634
 AB5634  NAD 83(2007)-  38 44 43.81073(N)    076 06 00.11247(W) AD(2002.00) 0
 AB5634  ELLIP H (02/10/07)  -29.767  (m)                       GP(2002.00)    
 AB5634  ELLIP H (08/30/02)  -29.748  (m)                       GP(       ) 4 2
 AB5634  NAD 83(1991)-  38 44 43.81115(N)    076 06 00.11250(W) AD(       ) 1
 AB5634  ELLIP H (08/02/96)  -29.744  (m)                       GP(       ) 3 1
 AB5634  NAVD 88 (08/02/96)    4.9    (m)  GEOID93  model used  GPS OBS        
 AB5634
 AB5634.Superseded values are not recommended for survey control.
 AB5634
 AB5634.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5634.See file dsdata.pdf to determine how the superseded data were derived.
 AB5634
 AB5634_MARKER: DD = SURVEY DISK
 AB5634_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5634_STAMPING: NO. GPS 028
 AB5634_MARK LOGO: MD0480
 AB5634_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5634_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5634+STABILITY: SURFACE MOTION
 AB5634_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5634+SATELLITE: SATELLITE OBSERVATIONS - March 03, 2003
 AB5634
 AB5634  HISTORY     - Date     Condition        Report By
 AB5634  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5634  HISTORY     - 20000912 GOOD             MDSHA
 AB5634  HISTORY     - 20020529 MARK NOT FOUND   USPSQD
 AB5634  HISTORY     - 20030303 GOOD             EASTUT
 AB5634
 AB5634                          STATION DESCRIPTION
 AB5634
 AB5634'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5634'THE STATION IS LOCATED ABOUT 2.4 MI (3.9 KM) SOUTHWEST OF THE CENTER
 AB5634'OF EASTON.
 AB5634'
 AB5634'TO REACH FROM THE INTERSECTION OF RT 333 (OXFORD ROAD) AND RT 322
 AB5634'(EASTON PARKWAY), GO SOUTHWEST ON RT 333 FOR 0.8 MI (1.3 KM) TO THE
 AB5634'INTERSECTION WITH CEDAR POINT ROAD.  TURN RIGHT AND GO SOUTHWEST ON
 AB5634'CEDAR POINT ROAD FOR 0.8 MI (1.3 KM) TO THE STATION ON THE LEFT.
 AB5634'
 AB5634'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5634'MONUMENT FLUSH WITH THE GROUND, 17.0 FT (5.2 M) SOUTHEAST OF THE
 AB5634'CENTERLINE OF CEDAR POINT LANE, 77.8 FT (23.7 M) NORTHEAST OF POWER
 AB5634'POLE NO. BWO-32-197 AND 134.8 FT (41.1 M) SOUTHWEST OF POWER POLE
 AB5634'NO. BWO-32-196.
 AB5634
 AB5634                          STATION RECOVERY (2000)
 AB5634
 AB5634'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5634'RECOVERED AS DESCRIBED.
 AB5634
 AB5634                          STATION RECOVERY (2002)
 AB5634
 AB5634'RECOVERY NOTE BY US POWER SQUADRON 2002 (KGS)
 AB5634'MARK NOT FOUND.
 AB5634
 AB5634                          STATION RECOVERY (2003)
 AB5634
 AB5634'RECOVERY NOTE BY EASTON UTILITIES 2003 (BKS)
 AB5634'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB9767 ***********************************************************************
 AB9767  DESIGNATION -  GPS 028
 AB9767  PID         -  AB9767
 AB9767  STATE/COUNTY-  MD/PRINCE GEORGES
 AB9767  COUNTRY     -  US
 AB9767  USGS QUAD   -  LAUREL (2016)
 AB9767
 AB9767                         *CURRENT SURVEY CONTROL
 AB9767  ______________________________________________________________________
 AB9767* NAD 83(2011) POSITION- 39 00 43.29219(N) 076 50 19.98265(W)   ADJUSTED
 AB9767* NAD 83(2011) ELLIP HT-     4.950 (meters)        (06/27/12)   ADJUSTED
 AB9767* NAD 83(2011) EPOCH   -  2010.00
 AB9767* NAVD 88 ORTHO HEIGHT -    37.301 (meters)      122.38  (feet) ADJUSTED
 AB9767  ______________________________________________________________________
 AB9767  GEOID HEIGHT    -        -32.357 (meters)                     GEOID18
 AB9767  NAD 83(2011) X  -  1,129,910.020 (meters)                     COMP
 AB9767  NAD 83(2011) Y  - -4,832,144.392 (meters)                     COMP
 AB9767  NAD 83(2011) Z  -  3,993,357.564 (meters)                     COMP
 AB9767  LAPLACE CORR    -         -5.29  (seconds)                    DEFLEC18
 AB9767  DYNAMIC HEIGHT  -         37.280 (meters)      122.31  (feet) COMP
 AB9767  MODELED GRAVITY -    980,090.3   (mgal)                       NAVD 88
 AB9767
 AB9767  VERT ORDER      -  SECOND    CLASS II
 AB9767
 AB9767  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB9767  Standards:
 AB9767         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB9767            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB9767  -------------------------------------------------------------------
 AB9767  NETWORK    0.41   0.53           0.18   0.15   0.27      0.13225600
 AB9767  -------------------------------------------------------------------
 AB9767  Click here for local accuracies and other accuracy information.
 AB9767
 AB9767.The horizontal coordinates were established by GPS observations
 AB9767.and adjusted by the National Geodetic Survey in June 2012.
 AB9767
 AB9767.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB9767.been affixed to the stable North American tectonic plate. See 
 AB9767.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB9767
 AB9767.The horizontal coordinates are valid at the epoch date displayed above
 AB9767.which is a decimal equivalence of Year/Month/Day.
 AB9767
 AB9767.The orthometric height was determined by differential leveling and
 AB9767.adjusted by the NATIONAL GEODETIC SURVEY
 AB9767.in September 1997.
 AB9767
 AB9767.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB9767.GEOID18 height accuracy estimate available here.
 AB9767
 AB9767.Click photographs - Photos may exist for this station.
 AB9767
 AB9767.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB9767
 AB9767.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB9767
 AB9767.The ellipsoidal height was determined by GPS observations
 AB9767.and is referenced to NAD 83.
 AB9767
 AB9767.The dynamic height is computed by dividing the NAVD 88
 AB9767.geopotential number by the normal gravity value computed on the
 AB9767.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB9767.degrees latitude (g = 980.6199 gals.).
 AB9767
 AB9767.The modeled gravity was interpolated from observed gravity values.
 AB9767
 AB9767. The following values were computed from the NAD 83(2011) position.
 AB9767
 AB9767;                    North         East     Units Scale Factor Converg.
 AB9767;SPC MD       -   149,353.488   413,953.863   MT  0.99995266   +0 06 04.0
 AB9767;SPC MD       -   490,003.90  1,358,113.63   sFT  0.99995266   +0 06 04.0
 AB9767;UTM  18      - 4,319,719.657   340,789.026   MT  0.99991213   -1 09 28.0
 AB9767
 AB9767!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB9767!SPC MD       -   0.99999922  x   0.99995266  =   0.99995188
 AB9767!UTM  18      -   0.99999922  x   0.99991213  =   0.99991135
 AB9767
 AB9767:                Primary Azimuth Mark                     Grid Az
 AB9767:SPC MD       -  GPS 020                                  189 41 20.2
 AB9767:UTM  18      -  GPS 020                                  190 56 52.2
 AB9767
 AB9767_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4078919719(NAD 83)
 AB9767
 AB9767|---------------------------------------------------------------------|
 AB9767| PID    Reference Object                     Distance      Geod. Az  |
 AB9767|                                                           dddmmss.s |
 AB9767| AB9763 GPS 020                             APPROX. 1.9 KM 1894724.2 |
 AB9767| AB9764 GPS 021                             APPROX. 1.4 KM 1963338.4 |
 AB9767|---------------------------------------------------------------------|
 AB9767
 AB9767                          SUPERSEDED SURVEY CONTROL
 AB9767
 AB9767  NAD 83(2007)-  39 00 43.29249(N)    076 50 19.98335(W) AD(2002.00) 0
 AB9767  ELLIP H (02/10/07)    4.965  (m)                       GP(2002.00)    
 AB9767  ELLIP H (08/30/02)    4.956  (m)                       GP(       ) 4 2
 AB9767  NAD 83(1991)-  39 00 43.29231(N)    076 50 19.98313(W) AD(       ) 1
 AB9767  ELLIP H (01/10/97)    5.029  (m)                       GP(       ) 4 1
 AB9767  NAVD 88 (01/10/97)   37.3    (m)  GEOID93  model used  GPS OBS        
 AB9767
 AB9767.Superseded values are not recommended for survey control.
 AB9767
 AB9767.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB9767.See file dsdata.pdf to determine how the superseded data were derived.
 AB9767
 AB9767_MARKER: A = ALUMINUM MARKER
 AB9767_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB9767_STAMPING: NASA-GSFC 220-FMD GPS-028 MARCH 1996
 AB9767_MARK LOGO: NASA
 AB9767_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB9767_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB9767+STABILITY: SURFACE MOTION
 AB9767_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB9767+SATELLITE: SATELLITE OBSERVATIONS - April 15, 1996
 AB9767
 AB9767  HISTORY     - Date     Condition        Report By
 AB9767  HISTORY     - 1996     MONUMENTED       LOCSUR
 AB9767  HISTORY     - 19960415 GOOD             RICE
 AB9767
 AB9767                          STATION DESCRIPTION
 AB9767
 AB9767'DESCRIBED BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1996 (RJM)
 AB9767'AT GODDARD SPACE FLIGHT CENTER 2 MILES (3.2 KM) EAST OF GREENBELT
 AB9767'MARYLAND, 3 MILES (4.8 KM) WEST OF BOWIE MARYLAND, 2 MILES (3.2 KM)
 AB9767'EAST OF THE BALTIMORE WASHINGTON PARKWAY ALONG ROUTE 193.  AT THE
 AB9767'ANTENNA TEST RANGE.  22.6 M (74.1 FT) SOUTH OF THE END OF A BASEBALL
 AB9767'OUTFIELD FENCE, 40.9 M (134.2 FT) NORTHEAST OF THE SOUTHEAST CORNER OF
 AB9767'A CONCRETE PAD, 0.4 M (1.3 FT) SOUTHWEST OF A WITNESS POST.  TO REACH
 AB9767'THE STATION FROM THE INTERSECTION OF GREENBELT ROAD AND GOOD LUCK ROAD
 AB9767'PROCEED 2.9 KM (1.80 MI) NORTH ON GOOD LUCK ROAD TO THE INTERSECTION
 AB9767'OF SPRINGFIELD ROAD, TURN LEFT AND GO NORTHWEST 1.1 KM (0.70 MI) TO
 AB9767'THE INTERSECTION OF BEAVER DAM ROAD, TURN LEFT AND GO WEST 1.3 KM
 AB9767'(0.80 MI) TO THE ANTENNA TEST RANGE, TURN LEFT AND PROCEED THROUGH THE
 AB9767'GATE 0.6 KM (0.35 MI) TO THE STATION ON THE RIGHT IN THE GRASS.
 AB9767'ACCESS SHOULD BE COORDINATED IN ADVANCE THROUGH THE OFFICE OF THE
 AB9767'CHIEF OF FACILITIES MANAGEMENT AT GODDARD SPACE FLIGHT CENTER
 AB9767'(301-286-8931) .
 AB9767
 AB9767                          STATION RECOVERY (1996)
 AB9767
 AB9767'RECOVERY NOTE BY RICE ASSOCIATES PC 1996 (RJM)
 AB9767'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5635 ***********************************************************************
 AB5635  DESIGNATION -  GPS 029
 AB5635  PID         -  AB5635
 AB5635  STATE/COUNTY-  MD/TALBOT
 AB5635  COUNTRY     -  US
 AB5635  USGS QUAD   -  EASTON (2016)
 AB5635
 AB5635                         *CURRENT SURVEY CONTROL
 AB5635  ______________________________________________________________________
 AB5635* NAD 83(2011) POSITION- 38 45 36.25284(N) 076 06 19.16176(W)   ADJUSTED
 AB5635* NAD 83(2011) ELLIP HT-   -30.399 (meters)        (06/27/12)   ADJUSTED
 AB5635* NAD 83(2011) EPOCH   -  2010.00
 AB5635* NAVD 88 ORTHO HEIGHT -     4.3   (meters)       14.    (feet) GPS OBS
 AB5635  ______________________________________________________________________
 AB5635  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5635  GEOID HEIGHT    -        -34.986 (meters)                     GEOID93
 AB5635  GEOID HEIGHT    -        -34.643 (meters)                     GEOID18
 AB5635  NAD 83(2011) X  -  1,195,891.943 (meters)                     COMP
 AB5635  NAD 83(2011) Y  - -4,834,300.966 (meters)                     COMP
 AB5635  NAD 83(2011) Z  -  3,971,563.386 (meters)                     COMP
 AB5635  LAPLACE CORR    -         -3.47  (seconds)                    DEFLEC18
 AB5635
 AB5635  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5635  Standards:
 AB5635         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5635            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5635  -------------------------------------------------------------------
 AB5635  NETWORK    0.37   0.73           0.16   0.14   0.37     -0.14568462
 AB5635  -------------------------------------------------------------------
 AB5635  Click here for local accuracies and other accuracy information.
 AB5635
 AB5635.The horizontal coordinates were established by GPS observations
 AB5635.and adjusted by the National Geodetic Survey in June 2012.
 AB5635
 AB5635.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5635.been affixed to the stable North American tectonic plate. See 
 AB5635.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5635
 AB5635.The horizontal coordinates are valid at the epoch date displayed above
 AB5635.which is a decimal equivalence of Year/Month/Day.
 AB5635
 AB5635.The orthometric height was determined by GPS observations and a
 AB5635.high-resolution geoid model.
 AB5635
 AB5635.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5635.GEOID18 height accuracy estimate available here.
 AB5635
 AB5635.Click photographs - Photos may exist for this station.
 AB5635
 AB5635.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5635
 AB5635.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5635
 AB5635.The ellipsoidal height was determined by GPS observations
 AB5635.and is referenced to NAD 83.
 AB5635
 AB5635. The following values were computed from the NAD 83(2011) position.
 AB5635
 AB5635;                    North         East     Units Scale Factor Converg.
 AB5635;SPC MD       -   121,753.197   477,758.754   MT  0.99995188   +0 33 41.5
 AB5635;SPC MD       -   399,451.95  1,567,446.85   sFT  0.99995188   +0 33 41.5
 AB5635;UTM  18      - 4,290,731.850   403,964.465   MT  0.99971357   -0 41 31.4
 AB5635
 AB5635!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5635!SPC MD       -   1.00000477  x   0.99995188  =   0.99995665
 AB5635!UTM  18      -   1.00000477  x   0.99971357  =   0.99971834
 AB5635
 AB5635:                Primary Azimuth Mark                     Grid Az
 AB5635:SPC MD       -  GPS 028                                  163 33 30.7
 AB5635:UTM  18      -  GPS 028                                  164 48 43.6
 AB5635
 AB5635_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0396490731(NAD 83)
 AB5635
 AB5635|---------------------------------------------------------------------|
 AB5635| PID    Reference Object                     Distance      Geod. Az  |
 AB5635|                                                           dddmmss.s |
 AB5635| AB5634 GPS 028                             APPROX. 1.7 KM 1640712.2 |
 AB5635| AB5640 GPS 034                             369.269 METERS 16726     |
 AB5635|---------------------------------------------------------------------|
 AB5635
 AB5635                          SUPERSEDED SURVEY CONTROL
 AB5635
 AB5635  NAD 83(2007)-  38 45 36.25307(N)    076 06 19.16243(W) AD(2002.00) 0
 AB5635  ELLIP H (02/10/07)  -30.366  (m)                       GP(2002.00)    
 AB5635  ELLIP H (08/30/02)  -30.337  (m)                       GP(       ) 4 2
 AB5635  NAD 83(1991)-  38 45 36.25390(N)    076 06 19.16286(W) AD(       ) 1
 AB5635  ELLIP H (08/02/96)  -30.303  (m)                       GP(       ) 3 1
 AB5635
 AB5635.Superseded values are not recommended for survey control.
 AB5635
 AB5635.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5635.See file dsdata.pdf to determine how the superseded data were derived.
 AB5635
 AB5635_MARKER: DD = SURVEY DISK
 AB5635_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5635_STAMPING: NO.GPS 029
 AB5635_MARK LOGO: MD0480
 AB5635_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5635_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5635+STABILITY: SURFACE MOTION
 AB5635_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5635+SATELLITE: SATELLITE OBSERVATIONS - March 12, 2002
 AB5635
 AB5635  HISTORY     - Date     Condition        Report By
 AB5635  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5635  HISTORY     - 20020312 GOOD             USPSQD
 AB5635
 AB5635                          STATION DESCRIPTION
 AB5635
 AB5635'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5635'THE STATION IS LOCATED ABOUT 1.8 MI (2.9 KM) SOUTHWEST OF THE CENTER
 AB5635'OF EASTON.
 AB5635'
 AB5635'TO REACH FROM THE INTERSECTION OF RT 333 (OXFORD ROAD) AND RT 322
 AB5635'(EASTON PARKWAY), GO SOUTHWEST ON RT 333 FOR 0.75 MI (1.21 KM) TO THE
 AB5635'INTERSECTION WITH WAVERLY ROAD.  TURN RIGHT AND GO NORTHWEST ON
 AB5635'WAVERLY ROAD FOR 1.05 MI (1.69 KM) TO THE INTERSECTION WITH TRED
 AB5635'AVON CIRCLE.  TURN RIGHT AND GO NORTH ON TRED AVON CIRCLE FOR 0.25 MI
 AB5635'(0.40 KM) TO THE STATION ON THE RIGHT.
 AB5635'
 AB5635'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5635'MONUMENT FLUSH WITH THE GROUND, 23.6 FT (7.2 M) NORTHEAST OF THE
 AB5635'CENTERLINE OF THE ROAD, 21.5 FT (6.6 M) SOUTHEAST OF THE CENTERLINE OF
 AB5635'A GRAVEL DRIVE LEADING TO HOUSE NO. 7667, 10.2 FT (3.1 M) SOUTHWEST OF
 AB5635'TELEPHONE POLE NO. 10 AND 51.8 FT (15.8 M) NORTHWEST OF THE CENTERLINE
 AB5635'OF A GRAVEL DRIVE LEADING TO HOUSE NO. 7665.
 AB5635
 AB5635                          STATION RECOVERY (2002)
 AB5635
 AB5635'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5635'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5636 ***********************************************************************
 AB5636  DESIGNATION -  GPS 030
 AB5636  PID         -  AB5636
 AB5636  STATE/COUNTY-  MD/TALBOT
 AB5636  COUNTRY     -  US
 AB5636  USGS QUAD   -  EASTON (2016)
 AB5636
 AB5636                         *CURRENT SURVEY CONTROL
 AB5636  ______________________________________________________________________
 AB5636* NAD 83(2011) POSITION- 38 45 37.81832(N) 076 04 42.87249(W)   ADJUSTED
 AB5636* NAD 83(2011) ELLIP HT-   -29.998 (meters)        (06/27/12)   ADJUSTED
 AB5636* NAD 83(2011) EPOCH   -  2010.00
 AB5636* NAVD 88 ORTHO HEIGHT -     4.694 (meters)       15.40  (feet) ADJUSTED
 AB5636  ______________________________________________________________________
 AB5636  GEOID HEIGHT    -        -34.688 (meters)                     GEOID18
 AB5636  NAD 83(2011) X  -  1,198,141.382 (meters)                     COMP
 AB5636  NAD 83(2011) Y  - -4,833,713.138 (meters)                     COMP
 AB5636  NAD 83(2011) Z  -  3,971,601.279 (meters)                     COMP
 AB5636  LAPLACE CORR    -         -3.21  (seconds)                    DEFLEC18
 AB5636  DYNAMIC HEIGHT  -          4.691 (meters)       15.39  (feet) COMP
 AB5636  MODELED GRAVITY -    980,035.0   (mgal)                       NAVD 88
 AB5636
 AB5636  VERT ORDER      -  SECOND    CLASS I
 AB5636
 AB5636  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5636  Standards:
 AB5636         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5636            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5636  -------------------------------------------------------------------
 AB5636  NETWORK    0.43   1.14           0.19   0.16   0.58     -0.17165463
 AB5636  -------------------------------------------------------------------
 AB5636  Click here for local accuracies and other accuracy information.
 AB5636
 AB5636.The horizontal coordinates were established by GPS observations
 AB5636.and adjusted by the National Geodetic Survey in June 2012.
 AB5636
 AB5636.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5636.been affixed to the stable North American tectonic plate. See 
 AB5636.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5636
 AB5636.The horizontal coordinates are valid at the epoch date displayed above
 AB5636.which is a decimal equivalence of Year/Month/Day.
 AB5636
 AB5636.The orthometric height was determined by differential leveling and
 AB5636.adjusted by the NATIONAL GEODETIC SURVEY
 AB5636.in September 2004.
 AB5636
 AB5636.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5636.GEOID18 height accuracy estimate available here.
 AB5636
 AB5636.Click photographs - Photos may exist for this station.
 AB5636
 AB5636.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5636
 AB5636.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5636
 AB5636.The ellipsoidal height was determined by GPS observations
 AB5636.and is referenced to NAD 83.
 AB5636
 AB5636.The dynamic height is computed by dividing the NAVD 88
 AB5636.geopotential number by the normal gravity value computed on the
 AB5636.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5636.degrees latitude (g = 980.6199 gals.).
 AB5636
 AB5636.The modeled gravity was interpolated from observed gravity values.
 AB5636
 AB5636. The following values were computed from the NAD 83(2011) position.
 AB5636
 AB5636;                    North         East     Units Scale Factor Converg.
 AB5636;SPC MD       -   121,824.589   480,082.843   MT  0.99995186   +0 34 41.9
 AB5636;SPC MD       -   399,686.17  1,575,071.79   sFT  0.99995186   +0 34 41.9
 AB5636;UTM  18      - 4,290,752.375   406,288.999   MT  0.99970814   -0 40 31.1
 AB5636
 AB5636!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5636!SPC MD       -   1.00000471  x   0.99995186  =   0.99995657
 AB5636!UTM  18      -   1.00000471  x   0.99970814  =   0.99971285
 AB5636
 AB5636:                Primary Azimuth Mark                     Grid Az
 AB5636:SPC MD       -  GPS 031                                  320 21 50.4
 AB5636:UTM  18      -  GPS 031                                  321 37 03.4
 AB5636
 AB5636_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0628890752(NAD 83)
 AB5636
 AB5636|---------------------------------------------------------------------|
 AB5636| PID    Reference Object                     Distance      Geod. Az  |
 AB5636|                                                           dddmmss.s |
 AB5636| AB5637 GPS 031                             APPROX. 0.6 KM 3205632.3 |
 AB5636|---------------------------------------------------------------------|
 AB5636
 AB5636                          SUPERSEDED SURVEY CONTROL
 AB5636
 AB5636  NAD 83(2007)-  38 45 37.81855(N)    076 04 42.87316(W) AD(2002.00) 0
 AB5636  ELLIP H (02/10/07)  -29.965  (m)                       GP(2002.00)    
 AB5636  ELLIP H (08/30/02)  -29.944  (m)                       GP(       ) 4 2
 AB5636  NAD 83(1991)-  38 45 37.81916(N)    076 04 42.87379(W) AD(       ) 1
 AB5636  ELLIP H (08/02/96)  -29.890  (m)                       GP(       ) 3 1
 AB5636  NAVD 88 (08/02/96)    4.8    (m)  GEOID93  model used  GPS OBS        
 AB5636
 AB5636.Superseded values are not recommended for survey control.
 AB5636
 AB5636.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5636.See file dsdata.pdf to determine how the superseded data were derived.
 AB5636
 AB5636_MARKER: DD = SURVEY DISK
 AB5636_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5636_STAMPING: NO. GPS 030
 AB5636_MARK LOGO: MD0480
 AB5636_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5636_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5636+STABILITY: SURFACE MOTION
 AB5636_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5636+SATELLITE: SATELLITE OBSERVATIONS - April 01, 2006
 AB5636
 AB5636  HISTORY     - Date     Condition        Report By
 AB5636  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5636  HISTORY     - 20000818 GOOD             MDSHA
 AB5636  HISTORY     - 20020312 GOOD             USPSQD
 AB5636  HISTORY     - 20060401 GOOD             GEOCAC
 AB5636
 AB5636                          STATION DESCRIPTION
 AB5636
 AB5636'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5636'THE STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) SOUTH OF THE CENTER OF
 AB5636'EASTON AT THE INTERSECTION OF RT 332 (EASTON PARKWAY) AND RT 333
 AB5636'(OXFORD ROAD).
 AB5636'
 AB5636'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5636'MONUMENT FLUSH WITH GROUND AT THE TOP OF A BANK, 72.6 FT (22.1 M)
 AB5636'SOUTHWEST OF THE CENTERLINE OF RT 322, 30.8 FT (9.4 M) SOUTHWEST OF A
 AB5636'TRAFFIC CONTROL SIGNAL POLE, 17.1 FT (5.2 M) WEST OF POWER POLE NO.
 AB5636'BWO-32-10 AND 56.8 FT (17.3 M) NORTHWEST OF THE CENTERLINE OF RT 333.
 AB5636
 AB5636                          STATION RECOVERY (2000)
 AB5636
 AB5636'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5636'RECOVERED AS DESCRIBED.
 AB5636
 AB5636                          STATION RECOVERY (2002)
 AB5636
 AB5636'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5636'REMAINS OF A SHREDDED CARSONITE POST WERE FOUND IN THE VICINITY.
 AB5636
 AB5636                          STATION RECOVERY (2006)
 AB5636
 AB5636'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 AB5636'FOUND AS DESCRIBED IN THE WEST QUADRANT OF THIS INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5637 ***********************************************************************
 AB5637  DESIGNATION -  GPS 031
 AB5637  PID         -  AB5637
 AB5637  STATE/COUNTY-  MD/TALBOT
 AB5637  COUNTRY     -  US
 AB5637  USGS QUAD   -  EASTON (2016)
 AB5637
 AB5637                         *CURRENT SURVEY CONTROL
 AB5637  ______________________________________________________________________
 AB5637* NAD 83(2011) POSITION- 38 45 53.39098(N) 076 04 59.01305(W)   ADJUSTED
 AB5637* NAD 83(2011) ELLIP HT-   -30.958 (meters)        (06/27/12)   ADJUSTED
 AB5637* NAD 83(2011) EPOCH   -  2010.00
 AB5637* NAVD 88 ORTHO HEIGHT -     3.719 (meters)       12.20  (feet) ADJUSTED
 AB5637  ______________________________________________________________________
 AB5637  GEOID HEIGHT    -        -34.673 (meters)                     GEOID18
 AB5637  NAD 83(2011) X  -  1,197,690.641 (meters)                     COMP
 AB5637  NAD 83(2011) Y  - -4,833,514.326 (meters)                     COMP
 AB5637  NAD 83(2011) Z  -  3,971,975.114 (meters)                     COMP
 AB5637  LAPLACE CORR    -         -3.23  (seconds)                    DEFLEC18
 AB5637  DYNAMIC HEIGHT  -          3.717 (meters)       12.19  (feet) COMP
 AB5637  MODELED GRAVITY -    980,035.6   (mgal)                       NAVD 88
 AB5637
 AB5637  VERT ORDER      -  SECOND    CLASS I
 AB5637
 AB5637  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5637  Standards:
 AB5637         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5637            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5637  -------------------------------------------------------------------
 AB5637  NETWORK    0.44   0.82           0.20   0.15   0.42     -0.10404791
 AB5637  -------------------------------------------------------------------
 AB5637  Click here for local accuracies and other accuracy information.
 AB5637
 AB5637.The horizontal coordinates were established by GPS observations
 AB5637.and adjusted by the National Geodetic Survey in June 2012.
 AB5637
 AB5637.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5637.been affixed to the stable North American tectonic plate. See 
 AB5637.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5637
 AB5637.The horizontal coordinates are valid at the epoch date displayed above
 AB5637.which is a decimal equivalence of Year/Month/Day.
 AB5637
 AB5637.The orthometric height was determined by differential leveling and
 AB5637.adjusted by the NATIONAL GEODETIC SURVEY
 AB5637.in September 2004.
 AB5637
 AB5637.No vertical observational check was made to the station.
 AB5637
 AB5637.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5637.GEOID18 height accuracy estimate available here.
 AB5637
 AB5637.Click photographs - Photos may exist for this station.
 AB5637
 AB5637.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5637
 AB5637.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5637
 AB5637.The ellipsoidal height was determined by GPS observations
 AB5637.and is referenced to NAD 83.
 AB5637
 AB5637.The dynamic height is computed by dividing the NAVD 88
 AB5637.geopotential number by the normal gravity value computed on the
 AB5637.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5637.degrees latitude (g = 980.6199 gals.).
 AB5637
 AB5637.The modeled gravity was interpolated from observed gravity values.
 AB5637
 AB5637. The following values were computed from the NAD 83(2011) position.
 AB5637
 AB5637;                    North         East     Units Scale Factor Converg.
 AB5637;SPC MD       -   122,300.823   479,688.364   MT  0.99995171   +0 34 31.8
 AB5637;SPC MD       -   401,248.62  1,573,777.57   sFT  0.99995171   +0 34 31.8
 AB5637;UTM  18      - 4,291,237.007   405,905.127   MT  0.99970903   -0 40 41.4
 AB5637
 AB5637!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5637!SPC MD       -   1.00000486  x   0.99995171  =   0.99995657
 AB5637!UTM  18      -   1.00000486  x   0.99970903  =   0.99971389
 AB5637
 AB5637:                Primary Azimuth Mark                     Grid Az
 AB5637:SPC MD       -  GPS 045                                  089 46 27.8
 AB5637:UTM  18      -  GPS 045                                  091 01 41.0
 AB5637
 AB5637_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0590591237(NAD 83)
 AB5637
 AB5637|---------------------------------------------------------------------|
 AB5637| PID    Reference Object                     Distance      Geod. Az  |
 AB5637|                                                           dddmmss.s |
 AB5637| AB5651 GPS 045                             APPROX. 1.2 KM 0902059.6 |
 AB5637| AB5652 GPS 046                             APPROX. 0.9 KM 0904010.1 |
 AB5637| AB5636 GPS 030                             APPROX. 0.6 KM 1405622.2 |
 AB5637|---------------------------------------------------------------------|
 AB5637
 AB5637                          SUPERSEDED SURVEY CONTROL
 AB5637
 AB5637  NAD 83(2007)-  38 45 53.39122(N)    076 04 59.01371(W) AD(2002.00) 0
 AB5637  ELLIP H (02/10/07)  -30.925  (m)                       GP(2002.00)    
 AB5637  ELLIP H (08/30/02)  -30.899  (m)                       GP(       ) 4 2
 AB5637  NAD 83(1991)-  38 45 53.39187(N)    076 04 59.01434(W) AD(       ) 1
 AB5637  ELLIP H (08/02/96)  -30.847  (m)                       GP(       ) 3 1
 AB5637  NAVD 88 (08/02/96)    3.8    (m)  GEOID93  model used  GPS OBS        
 AB5637
 AB5637.Superseded values are not recommended for survey control.
 AB5637
 AB5637.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5637.See file dsdata.pdf to determine how the superseded data were derived.
 AB5637
 AB5637_MARKER: DD = SURVEY DISK
 AB5637_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5637_STAMPING: NO. GPS 031
 AB5637_MARK LOGO: MD0480
 AB5637_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5637_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5637+STABILITY: SURFACE MOTION
 AB5637_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5637+SATELLITE: SATELLITE OBSERVATIONS - April 01, 2006
 AB5637
 AB5637  HISTORY     - Date     Condition        Report By
 AB5637  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5637  HISTORY     - 20000818 GOOD             MDSHA
 AB5637  HISTORY     - 20020312 GOOD             USPSQD
 AB5637  HISTORY     - 20060401 GOOD             GEOCAC
 AB5637
 AB5637                          STATION DESCRIPTION
 AB5637
 AB5637'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5637'THE STATION IS LOCATED ABOUT 0.75 MI (1.21 KM) SOUTH OF THE CENTER OF
 AB5637'EASTON.
 AB5637'
 AB5637'TO REACH FROM THE INTERSECTION OF RT 322 (EASTON PARKWAY) AND RT 333
 AB5637'(OXFORD ROAD), GO NORTHWEST ON RT 322 FOR 0.35 MI (0.56 KM) TO THE
 AB5637'STATION ON THE LEFT.
 AB5637'
 AB5637'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5637'MONUMENT FLUSH WITH THE GROUND, 123.5 FT (37.6 M) SOUTHEAST OF POWER
 AB5637'POLE NO. DPL-6717-199, 35.7 FT (10.9 M) SOUTHWEST OF THE CENTERLINE OF
 AB5637'THE ROAD AND 206.5 FT (62.9 M) NORTHEAST OF POWER POLE NO.
 AB5637'DPL-6716-198.
 AB5637
 AB5637                          STATION RECOVERY (2000)
 AB5637
 AB5637'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5637'RECOVERED AS DESCRIBED.
 AB5637
 AB5637                          STATION RECOVERY (2002)
 AB5637
 AB5637'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5637'REMAINS OF A SHREDDED CARSONITE POST WERE FOUND IN THE VICINITY.
 AB5637
 AB5637                          STATION RECOVERY (2006)
 AB5637
 AB5637'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 AB5637'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5638 ***********************************************************************
 AB5638  DESIGNATION -  GPS 032
 AB5638  PID         -  AB5638
 AB5638  STATE/COUNTY-  MD/TALBOT
 AB5638  COUNTRY     -  US
 AB5638  USGS QUAD   -  EASTON (2016)
 AB5638
 AB5638                         *CURRENT SURVEY CONTROL
 AB5638  ______________________________________________________________________
 AB5638* NAD 83(2011) POSITION- 38 47 01.10808(N) 076 06 58.04459(W)   ADJUSTED
 AB5638* NAD 83(2011) ELLIP HT-   -30.394 (meters)        (06/27/12)   ADJUSTED
 AB5638* NAD 83(2011) EPOCH   -  2010.00
 AB5638* NAVD 88 ORTHO HEIGHT -     4.188 (meters)       13.74  (feet) ADJUSTED
 AB5638  ______________________________________________________________________
 AB5638  GEOID HEIGHT    -        -34.576 (meters)                     GEOID18
 AB5638  NAD 83(2011) X  -  1,194,587.427 (meters)                     COMP
 AB5638  NAD 83(2011) Y  - -4,832,935.611 (meters)                     COMP
 AB5638  NAD 83(2011) Z  -  3,973,603.425 (meters)                     COMP
 AB5638  LAPLACE CORR    -         -3.72  (seconds)                    DEFLEC18
 AB5638  DYNAMIC HEIGHT  -          4.186 (meters)       13.73  (feet) COMP
 AB5638  MODELED GRAVITY -    980,038.8   (mgal)                       NAVD 88
 AB5638
 AB5638  VERT ORDER      -  SECOND    CLASS I
 AB5638
 AB5638  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5638  Standards:
 AB5638         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5638            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5638  -------------------------------------------------------------------
 AB5638  NETWORK    0.51   0.96           0.23   0.18   0.49     -0.02465915
 AB5638  -------------------------------------------------------------------
 AB5638  Click here for local accuracies and other accuracy information.
 AB5638
 AB5638.The horizontal coordinates were established by GPS observations
 AB5638.and adjusted by the National Geodetic Survey in June 2012.
 AB5638
 AB5638.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5638.been affixed to the stable North American tectonic plate. See 
 AB5638.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5638
 AB5638.The horizontal coordinates are valid at the epoch date displayed above
 AB5638.which is a decimal equivalence of Year/Month/Day.
 AB5638
 AB5638.The orthometric height was determined by differential leveling and
 AB5638.adjusted by the NATIONAL GEODETIC SURVEY
 AB5638.in September 2004.
 AB5638
 AB5638.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5638.GEOID18 height accuracy estimate available here.
 AB5638
 AB5638.Click photographs - Photos may exist for this station.
 AB5638
 AB5638.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5638
 AB5638.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5638
 AB5638.The ellipsoidal height was determined by GPS observations
 AB5638.and is referenced to NAD 83.
 AB5638
 AB5638.The dynamic height is computed by dividing the NAVD 88
 AB5638.geopotential number by the normal gravity value computed on the
 AB5638.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5638.degrees latitude (g = 980.6199 gals.).
 AB5638
 AB5638.The modeled gravity was interpolated from observed gravity values.
 AB5638
 AB5638. The following values were computed from the NAD 83(2011) position.
 AB5638
 AB5638;                    North         East     Units Scale Factor Converg.
 AB5638;SPC MD       -   124,360.435   476,794.726   MT  0.99995114   +0 33 17.1
 AB5638;SPC MD       -   408,005.86  1,564,284.03   sFT  0.99995114   +0 33 17.1
 AB5638;UTM  18      - 4,293,358.935   403,057.929   MT  0.99971572   -0 41 57.0
 AB5638
 AB5638!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5638!SPC MD       -   1.00000477  x   0.99995114  =   0.99995591
 AB5638!UTM  18      -   1.00000477  x   0.99971572  =   0.99972049
 AB5638
 AB5638:                Primary Azimuth Mark                     Grid Az
 AB5638:SPC MD       -  GPS 008                                  012 42 28.1
 AB5638:UTM  18      -  GPS 008                                  013 57 42.2
 AB5638
 AB5638_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0305793358(NAD 83)
 AB5638
 AB5638|---------------------------------------------------------------------|
 AB5638| PID    Reference Object                     Distance      Geod. Az  |
 AB5638|                                                           dddmmss.s |
 AB5638| AB5614 GPS 008                             APPROX. 1.7 KM 0131545.2 |
 AB5638| AB5639 GPS 033                             433.209 METERS 1034354.0 |
 AB5638|---------------------------------------------------------------------|
 AB5638
 AB5638                          SUPERSEDED SURVEY CONTROL
 AB5638
 AB5638  NAD 83(2007)-  38 47 01.10830(N)    076 06 58.04540(W) AD(2002.00) 0
 AB5638  ELLIP H (02/10/07)  -30.349  (m)                       GP(2002.00)    
 AB5638  ELLIP H (08/30/02)  -30.306  (m)                       GP(       ) 4 2
 AB5638  NAD 83(1991)-  38 47 01.10890(N)    076 06 58.04605(W) AD(       ) 1
 AB5638  ELLIP H (08/02/96)  -30.293  (m)                       GP(       ) 3 1
 AB5638  NAVD 88               4.19   (m)           13.7    (f) LEVELING    3  
 AB5638  NAVD 88 (08/02/96)    4.2    (m)  GEOID93  model used  GPS OBS        
 AB5638
 AB5638.Superseded values are not recommended for survey control.
 AB5638
 AB5638.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5638.See file dsdata.pdf to determine how the superseded data were derived.
 AB5638
 AB5638_MARKER: DD = SURVEY DISK
 AB5638_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5638_STAMPING: GPS 032
 AB5638_MARK LOGO: MD0480
 AB5638_PROJECTION: FLUSH
 AB5638_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5638_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5638+STABILITY: SURFACE MOTION
 AB5638_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5638+SATELLITE: SATELLITE OBSERVATIONS - July 21, 2017
 AB5638
 AB5638  HISTORY     - Date     Condition        Report By
 AB5638  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5638  HISTORY     - 19990921 GOOD             MDSHA
 AB5638  HISTORY     - 20020312 GOOD             USPSQD
 AB5638  HISTORY     - 20070123 GOOD             EASTUT
 AB5638  HISTORY     - 20090409 GOOD             MCCRO
 AB5638  HISTORY     - 20170721 GOOD             BASE9
 AB5638
 AB5638                          STATION DESCRIPTION
 AB5638
 AB5638'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5638'THE STATION IS LOCATED ABOUT 2.3 MI (3.7 KM) WEST OF THE CENTER OF
 AB5638'EASTON.
 AB5638'
 AB5638'TO REACH FROM THE INTERSECTION OF RT 322 (EASTON PARKWAY) AND RT 33
 AB5638'(ST. MICHAELS ROAD), GO WEST ON RT 33 FOR 1.7 MI (2.7 KM) THE
 AB5638'INTERSECTION WITH RT 370 AND THE STATION ON THE RIGHT,
 AB5638'
 AB5638'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5638'MONUMENT FLUSH WITH THE GROUND, 59.4 FT (18.1 M) EAST OF TELEPHONE
 AB5638'POLE NO.85, 65.2 FT (19.9 M) WEST OF TELEPHONE POLE NO.84, 78.2 FT
 AB5638'(23.8 M) NORTHEAST OF LIGHT POLE NO. 25 AND 56.4 FT (17.2 M) NORTH OF
 AB5638'THE CENTERLINE OF RT 33.
 AB5638
 AB5638                          STATION RECOVERY (1999)
 AB5638
 AB5638'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5638'RECOVERED AS DESCRIBED.
 AB5638
 AB5638                          STATION RECOVERY (2002)
 AB5638
 AB5638'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5638'RECOVERED IN GOOD CONDITION.
 AB5638
 AB5638                          STATION RECOVERY (2007)
 AB5638
 AB5638'RECOVERY NOTE BY EASTON UTILITIES 2007 (BKS)
 AB5638'RECOVERED IN GOOD CONDITION.
 AB5638
 AB5638                          STATION RECOVERY (2009)
 AB5638
 AB5638'RECOVERY NOTE BY MCCRONE INCORPORATED 2009 (BWF)
 AB5638'RECOVERED AS DESCRIBED.
 AB5638
 AB5638                          STATION RECOVERY (2017)
 AB5638
 AB5638'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 AB5638'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5639 ***********************************************************************
 AB5639  DESIGNATION -  GPS 033
 AB5639  PID         -  AB5639
 AB5639  STATE/COUNTY-  MD/TALBOT
 AB5639  COUNTRY     -  US
 AB5639  USGS QUAD   -  EASTON (2016)
 AB5639
 AB5639                         *CURRENT SURVEY CONTROL
 AB5639  ______________________________________________________________________
 AB5639* NAD 83(2011) POSITION- 38 46 57.77294(N) 076 06 40.60917(W)   ADJUSTED
 AB5639* NAD 83(2011) ELLIP HT-   -30.434 (meters)        (06/27/12)   ADJUSTED
 AB5639* NAD 83(2011) EPOCH   -  2010.00
 AB5639* NAVD 88 ORTHO HEIGHT -     4.160 (meters)       13.65  (feet) ADJUSTED
 AB5639  ______________________________________________________________________
 AB5639  GEOID HEIGHT    -        -34.588 (meters)                     GEOID18
 AB5639  NAD 83(2011) X  -  1,195,011.402 (meters)                     COMP
 AB5639  NAD 83(2011) Y  - -4,832,897.121 (meters)                     COMP
 AB5639  NAD 83(2011) Z  -  3,973,523.231 (meters)                     COMP
 AB5639  LAPLACE CORR    -         -3.66  (seconds)                    DEFLEC18
 AB5639  DYNAMIC HEIGHT  -          4.157 (meters)       13.64  (feet) COMP
 AB5639  MODELED GRAVITY -    980,038.5   (mgal)                       NAVD 88
 AB5639
 AB5639  VERT ORDER      -  SECOND    CLASS I
 AB5639
 AB5639  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5639  Standards:
 AB5639         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5639            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5639  -------------------------------------------------------------------
 AB5639  NETWORK    0.51   0.96           0.23   0.18   0.49     -0.07168216
 AB5639  -------------------------------------------------------------------
 AB5639  Click here for local accuracies and other accuracy information.
 AB5639
 AB5639.The horizontal coordinates were established by GPS observations
 AB5639.and adjusted by the National Geodetic Survey in June 2012.
 AB5639
 AB5639.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5639.been affixed to the stable North American tectonic plate. See 
 AB5639.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5639
 AB5639.The horizontal coordinates are valid at the epoch date displayed above
 AB5639.which is a decimal equivalence of Year/Month/Day.
 AB5639
 AB5639.The orthometric height was determined by differential leveling and
 AB5639.adjusted by the NATIONAL GEODETIC SURVEY
 AB5639.in September 2004.
 AB5639
 AB5639.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5639.GEOID18 height accuracy estimate available here.
 AB5639
 AB5639.Click photographs - Photos may exist for this station.
 AB5639
 AB5639.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5639
 AB5639.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5639
 AB5639.The ellipsoidal height was determined by GPS observations
 AB5639.and is referenced to NAD 83.
 AB5639
 AB5639.The dynamic height is computed by dividing the NAVD 88
 AB5639.geopotential number by the normal gravity value computed on the
 AB5639.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5639.degrees latitude (g = 980.6199 gals.).
 AB5639
 AB5639.The modeled gravity was interpolated from observed gravity values.
 AB5639
 AB5639. The following values were computed from the NAD 83(2011) position.
 AB5639
 AB5639;                    North         East     Units Scale Factor Converg.
 AB5639;SPC MD       -   124,261.687   477,216.508   MT  0.99995116   +0 33 28.0
 AB5639;SPC MD       -   407,681.88  1,565,667.83   sFT  0.99995116   +0 33 28.0
 AB5639;UTM  18      - 4,293,251.005   403,477.350   MT  0.99971472   -0 41 46.0
 AB5639
 AB5639!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5639!SPC MD       -   1.00000478  x   0.99995116  =   0.99995593
 AB5639!UTM  18      -   1.00000478  x   0.99971472  =   0.99971949
 AB5639
 AB5639:                Primary Azimuth Mark                     Grid Az
 AB5639:SPC MD       -  GPS 032                                  283 10 36.9
 AB5639:UTM  18      -  GPS 032                                  284 25 50.9
 AB5639
 AB5639_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0347793251(NAD 83)
 AB5639
 AB5639|---------------------------------------------------------------------|
 AB5639| PID    Reference Object                     Distance      Geod. Az  |
 AB5639|                                                           dddmmss.s |
 AB5639| AB5638 GPS 032                             433.209 METERS 2834404.9 |
 AB5639| AB5614 GPS 008                             APPROX. 1.8 KM 3590416.0 |
 AB5639|---------------------------------------------------------------------|
 AB5639
 AB5639                          SUPERSEDED SURVEY CONTROL
 AB5639
 AB5639  NAD 83(2007)-  38 46 57.77322(N)    076 06 40.60990(W) AD(2002.00) 0
 AB5639  ELLIP H (02/10/07)  -30.396  (m)                       GP(2002.00)    
 AB5639  ELLIP H (08/30/02)  -30.353  (m)                       GP(       ) 4 2
 AB5639  NAD 83(1991)-  38 46 57.77379(N)    076 06 40.61058(W) AD(       ) 1
 AB5639  ELLIP H (08/02/96)  -30.337  (m)                       GP(       ) 3 1
 AB5639  NAVD 88 (08/02/96)    4.2    (m)  GEOID93  model used  GPS OBS        
 AB5639
 AB5639.Superseded values are not recommended for survey control.
 AB5639
 AB5639.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5639.See file dsdata.pdf to determine how the superseded data were derived.
 AB5639
 AB5639_MARKER: DD = SURVEY DISK
 AB5639_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5639_STAMPING: GPS 033
 AB5639_MARK LOGO: MD0480
 AB5639_PROJECTION: FLUSH
 AB5639_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5639_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5639+STABILITY: SURFACE MOTION
 AB5639_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5639+SATELLITE: SATELLITE OBSERVATIONS - July 21, 2017
 AB5639
 AB5639  HISTORY     - Date     Condition        Report By
 AB5639  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5639  HISTORY     - 19990921 GOOD             MDSHA
 AB5639  HISTORY     - 20020312 GOOD             USPSQD
 AB5639  HISTORY     - 20070115 GOOD             USPSQD
 AB5639  HISTORY     - 20170721 GOOD             BASE9
 AB5639
 AB5639                          STATION DESCRIPTION
 AB5639
 AB5639'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5639'THE STATION IS LOCATED ABOUT 2.3 MI (3.7 KM) WEST OF THE CENTER OF
 AB5639'EASTON.
 AB5639'
 AB5639'TO REACH FROM THE INTERSECTION OF RT 322 (EASTON PARKWAY) AND RT 33
 AB5639'(ST. MICHAELS ROAD), GO WEST ON RT 33 FOR 1.45 MI (2.33 KM) TO THE
 AB5639'STATION ON THE LEFT.
 AB5639'
 AB5639'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5639'MONUMENT FLUSH WITH THE GROUND, 97.7 FT (29.8 M) SOUTHEAST OF POWER
 AB5639'POLE NO. 32351-08470, 76.2 FT (23.2 M) SOUTHEAST OF THE CENTERLINE
 AB5639'OF A MACADAM LANE LEADING TO BETTYS GARDEN FARM, 37.0 FT (11.3 M)
 AB5639'SOUTH OF THE CENTERLINE OF RT 33 AND 89.1 FT (27.2 M) NORTHWEST OF
 AB5639'POWER POLE NO.32369-08466.
 AB5639
 AB5639                          STATION RECOVERY (1999)
 AB5639
 AB5639'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5639'RECOVERED AS DESCRIBED.
 AB5639
 AB5639                          STATION RECOVERY (2002)
 AB5639
 AB5639'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5639'REMAINS OF A SHREDDED CARSONITE POST WERE FOUND IN THE VICINITY.
 AB5639'REFERENCED BETTY'S GARDEN FARM LANE IS AT MAILBOX NUMBER 27815.
 AB5639
 AB5639                          STATION RECOVERY (2007)
 AB5639
 AB5639'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 AB5639'THERE ARE NEW POWER POLES, NUMBER OF ONE NEAR ON DRIVEWAY 613/22
 AB5639'CHOPTANK BETTYS GARDEN FARM METAL SIGN IS ON OTHER SIDE OF DRIVEWAY.
 AB5639
 AB5639                          STATION RECOVERY (2017)
 AB5639
 AB5639'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 AB5639'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5640 ***********************************************************************
 AB5640  DESIGNATION -  GPS 034
 AB5640  PID         -  AB5640
 AB5640  STATE/COUNTY-  MD/TALBOT
 AB5640  COUNTRY     -  US
 AB5640  USGS QUAD   -  EASTON (2016)
 AB5640
 AB5640                         *CURRENT SURVEY CONTROL
 AB5640  ______________________________________________________________________
 AB5640* NAD 83(2011) POSITION- 38 45 24.56496(N) 076 06 15.83206(W)   ADJUSTED
 AB5640* NAD 83(2011) ELLIP HT-   -30.357 (meters)        (06/27/12)   ADJUSTED
 AB5640* NAD 83(2011) EPOCH   -  2010.00
 AB5640* NAVD 88 ORTHO HEIGHT -     4.3   (meters)       14.    (feet) GPS OBS
 AB5640  ______________________________________________________________________
 AB5640  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5640  GEOID HEIGHT    -        -34.994 (meters)                     GEOID93
 AB5640  GEOID HEIGHT    -        -34.650 (meters)                     GEOID18
 AB5640  NAD 83(2011) X  -  1,196,024.176 (meters)                     COMP
 AB5640  NAD 83(2011) Y  - -4,834,500.719 (meters)                     COMP
 AB5640  NAD 83(2011) Z  -  3,971,282.367 (meters)                     COMP
 AB5640  LAPLACE CORR    -         -3.43  (seconds)                    DEFLEC18
 AB5640
 AB5640  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5640  Standards:
 AB5640         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5640            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5640  -------------------------------------------------------------------
 AB5640  NETWORK    0.44   1.29           0.18   0.18   0.66     -0.23227585
 AB5640  -------------------------------------------------------------------
 AB5640  Click here for local accuracies and other accuracy information.
 AB5640
 AB5640.The horizontal coordinates were established by GPS observations
 AB5640.and adjusted by the National Geodetic Survey in June 2012.
 AB5640
 AB5640.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5640.been affixed to the stable North American tectonic plate. See 
 AB5640.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5640
 AB5640.The horizontal coordinates are valid at the epoch date displayed above
 AB5640.which is a decimal equivalence of Year/Month/Day.
 AB5640
 AB5640.The orthometric height was determined by GPS observations and a
 AB5640.high-resolution geoid model.
 AB5640
 AB5640.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5640.GEOID18 height accuracy estimate available here.
 AB5640
 AB5640.Click photographs - Photos may exist for this station.
 AB5640
 AB5640.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5640
 AB5640.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5640
 AB5640.The ellipsoidal height was determined by GPS observations
 AB5640.and is referenced to NAD 83.
 AB5640
 AB5640. The following values were computed from the NAD 83(2011) position.
 AB5640
 AB5640;                    North         East     Units Scale Factor Converg.
 AB5640;SPC MD       -   121,393.608   477,842.674   MT  0.99995199   +0 33 43.6
 AB5640;SPC MD       -   398,272.20  1,567,722.17   sFT  0.99995199   +0 33 43.6
 AB5640;UTM  18      - 4,290,370.598   404,040.480   MT  0.99971339   -0 41 29.1
 AB5640
 AB5640!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5640!SPC MD       -   1.00000476  x   0.99995199  =   0.99995675
 AB5640!UTM  18      -   1.00000476  x   0.99971339  =   0.99971815
 AB5640
 AB5640:                Primary Azimuth Mark                     Grid Az
 AB5640:SPC MD       -  GPS 028                                  162 37 45.6
 AB5640:UTM  18      -  GPS 028                                  163 52 58.3
 AB5640
 AB5640_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0404090370(NAD 83)
 AB5640
 AB5640|---------------------------------------------------------------------|
 AB5640| PID    Reference Object                     Distance      Geod. Az  |
 AB5640|                                                           dddmmss.s |
 AB5640| AB5634 GPS 028                             APPROX. 1.3 KM 1631129.2 |
 AB5640| AB5635 GPS 029                             369.269 METERS 34726     |
 AB5640|---------------------------------------------------------------------|
 AB5640
 AB5640                          SUPERSEDED SURVEY CONTROL
 AB5640
 AB5640  NAD 83(2007)-  38 45 24.56520(N)    076 06 15.83276(W) AD(2002.00) 0
 AB5640  ELLIP H (02/10/07)  -30.325  (m)                       GP(2002.00)    
 AB5640  ELLIP H (08/30/02)  -30.301  (m)                       GP(       ) 4 2
 AB5640  NAD 83(1991)-  38 45 24.56580(N)    076 06 15.83298(W) AD(       ) 1
 AB5640  ELLIP H (08/02/96)  -30.283  (m)                       GP(       ) 3 1
 AB5640
 AB5640.Superseded values are not recommended for survey control.
 AB5640
 AB5640.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5640.See file dsdata.pdf to determine how the superseded data were derived.
 AB5640
 AB5640_MARKER: DD = SURVEY DISK
 AB5640_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5640_STAMPING: NO.GPS 034
 AB5640_MARK LOGO: MD0480
 AB5640_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5640_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5640+STABILITY: SURFACE MOTION
 AB5640_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5640+SATELLITE: SATELLITE OBSERVATIONS - March 12, 2002
 AB5640
 AB5640  HISTORY     - Date     Condition        Report By
 AB5640  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5640  HISTORY     - 20020312 GOOD             USPSQD
 AB5640
 AB5640                          STATION DESCRIPTION
 AB5640
 AB5640'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5640'THE STATION IS LOCATED ABOUT 1.9 MI (3.1 KM) SOUTHWEST OF THE CENTER
 AB5640'OF EASTON.
 AB5640'
 AB5640'TO REACH FROM THE INTERSECTION OF RT 333 (OXFORD ROAD) AND RT 322
 AB5640'(EASTON PARKWAY), GO SOUTHWEST ON RT 333 FOR 0.75 MI (1.21 KM) TO THE
 AB5640'INTERSECTION WITH WAVERLY ROAD.  TURN RIGHT AND GO NORTHWEST ON
 AB5640'WAVERLY ROAD FOR 1.05 MI (1.69 KM) TO THE INTERSECTION WITH TRED AVON
 AB5640'CIRCLE AND THE STATION ON THE RIGHT.
 AB5640'
 AB5640'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5640'MONUMENT FLUSH WITH THE GROUND, 77.4 FT (23.6 M) NORTHWEST OF POWER
 AB5640'POLE NO.BWO-32-78, 80.8 FT (24.6 M) NORTHEAST OF POWER POLE NO.
 AB5640'BWO-32-108, 15.0 FT (4.6 M) NORTH OF THE CENTERLINE OF WAVERLY ROAD
 AB5640'AND 7.2 FT (2.2 M) SOUTH OF THE ROAD SIGN FOR TRED AVON CIRCLE.
 AB5640
 AB5640                          STATION RECOVERY (2002)
 AB5640
 AB5640'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5640'A CARSONITE POST IS AT THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5643 ***********************************************************************
 AB5643  DESIGNATION -  GPS 037
 AB5643  PID         -  AB5643
 AB5643  STATE/COUNTY-  MD/TALBOT
 AB5643  COUNTRY     -  US
 AB5643  USGS QUAD   -  EASTON (2016)
 AB5643
 AB5643                         *CURRENT SURVEY CONTROL
 AB5643  ______________________________________________________________________
 AB5643* NAD 83(2011) POSITION- 38 47 34.53366(N) 076 03 35.78086(W)   ADJUSTED
 AB5643* NAD 83(2011) ELLIP HT-   -14.731 (meters)        (06/27/12)   ADJUSTED
 AB5643* NAD 83(2011) EPOCH   -  2010.00
 AB5643* NAVD 88 ORTHO HEIGHT -    19.924 (meters)       65.37  (feet) ADJUSTED
 AB5643  ______________________________________________________________________
 AB5643  GEOID HEIGHT    -        -34.656 (meters)                     GEOID18
 AB5643  NAD 83(2011) X  -  1,199,173.429 (meters)                     COMP
 AB5643  NAD 83(2011) Y  - -4,831,147.047 (meters)                     COMP
 AB5643  NAD 83(2011) Z  -  3,974,416.652 (meters)                     COMP
 AB5643  LAPLACE CORR    -         -3.15  (seconds)                    DEFLEC18
 AB5643  DYNAMIC HEIGHT  -         19.912 (meters)       65.33  (feet) COMP
 AB5643  MODELED GRAVITY -    980,037.9   (mgal)                       NAVD 88
 AB5643
 AB5643  VERT ORDER      -  SECOND    CLASS I
 AB5643
 AB5643  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5643  Standards:
 AB5643         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5643            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5643  -------------------------------------------------------------------
 AB5643  NETWORK    0.44   0.86           0.19   0.17   0.44     -0.10931017
 AB5643  -------------------------------------------------------------------
 AB5643  Click here for local accuracies and other accuracy information.
 AB5643
 AB5643.The horizontal coordinates were established by GPS observations
 AB5643.and adjusted by the National Geodetic Survey in June 2012.
 AB5643
 AB5643.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5643.been affixed to the stable North American tectonic plate. See 
 AB5643.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5643
 AB5643.The horizontal coordinates are valid at the epoch date displayed above
 AB5643.which is a decimal equivalence of Year/Month/Day.
 AB5643
 AB5643.The orthometric height was determined by differential leveling and
 AB5643.adjusted by the NATIONAL GEODETIC SURVEY
 AB5643.in September 2004.
 AB5643
 AB5643.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5643.GEOID18 height accuracy estimate available here.
 AB5643
 AB5643.Click photographs - Photos may exist for this station.
 AB5643
 AB5643.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5643
 AB5643.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5643
 AB5643.The ellipsoidal height was determined by GPS observations
 AB5643.and is referenced to NAD 83.
 AB5643
 AB5643.The dynamic height is computed by dividing the NAVD 88
 AB5643.geopotential number by the normal gravity value computed on the
 AB5643.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5643.degrees latitude (g = 980.6199 gals.).
 AB5643
 AB5643.The modeled gravity was interpolated from observed gravity values.
 AB5643
 AB5643. The following values were computed from the NAD 83(2011) position.
 AB5643
 AB5643;                    North         East     Units Scale Factor Converg.
 AB5643;SPC MD       -   125,439.825   481,665.468   MT  0.99995089   +0 35 24.1
 AB5643;SPC MD       -   411,547.16  1,580,264.12   sFT  0.99995089   +0 35 24.1
 AB5643;UTM  18      - 4,294,331.235   407,949.948   MT  0.99970434   -0 39 50.8
 AB5643
 AB5643!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5643!SPC MD       -   1.00000231  x   0.99995089  =   0.99995320
 AB5643!UTM  18      -   1.00000231  x   0.99970434  =   0.99970665
 AB5643
 AB5643:                Primary Azimuth Mark                     Grid Az
 AB5643:SPC MD       -  GPS 039                                  170 15 00.4
 AB5643:UTM  18      -  GPS 039                                  171 30 15.3
 AB5643
 AB5643_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0794994331(NAD 83)
 AB5643
 AB5643|---------------------------------------------------------------------|
 AB5643| PID    Reference Object                     Distance      Geod. Az  |
 AB5643|                                                           dddmmss.s |
 AB5643| AB5645 GPS 039                             APPROX. 1.8 KM 1705024.5 |
 AB5643| AB5618 GPS 012                             APPROX. 1.8 KM 3582634.6 |
 AB5643|---------------------------------------------------------------------|
 AB5643
 AB5643                          SUPERSEDED SURVEY CONTROL
 AB5643
 AB5643  NAD 83(2007)-  38 47 34.53388(N)    076 03 35.78156(W) AD(2002.00) 0
 AB5643  ELLIP H (02/10/07)  -14.700  (m)                       GP(2002.00)    
 AB5643  ELLIP H (08/30/02)  -14.697  (m)                       GP(       ) 4 2
 AB5643  NAD 83(1991)-  38 47 34.53455(N)    076 03 35.78200(W) AD(       ) 1
 AB5643  ELLIP H (08/02/96)  -14.643  (m)                       GP(       ) 3 1
 AB5643  NAVD 88 (08/02/96)   20.0    (m)  GEOID93  model used  GPS OBS        
 AB5643
 AB5643.Superseded values are not recommended for survey control.
 AB5643
 AB5643.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5643.See file dsdata.pdf to determine how the superseded data were derived.
 AB5643
 AB5643_MARKER: DD = SURVEY DISK
 AB5643_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5643_STAMPING: NO. GPS 037
 AB5643_MARK LOGO: MD0480
 AB5643_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5643_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5643+STABILITY: SURFACE MOTION
 AB5643_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5643+SATELLITE: SATELLITE OBSERVATIONS - February 21, 2002
 AB5643
 AB5643  HISTORY     - Date     Condition        Report By
 AB5643  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5643  HISTORY     - 19991007 GOOD             MDSHA
 AB5643  HISTORY     - 20020221 GOOD             USPSQD
 AB5643
 AB5643                          STATION DESCRIPTION
 AB5643
 AB5643'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5643'THE STATION IS LOCATED ABOUT 1.5 MI (2.4 KM) NORTHEAST OF THE CENTER
 AB5643'OF EASTON.
 AB5643'
 AB5643'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD) GO
 AB5643'NORTH ON RT 50 FOR 1.4 MI (2.3 KM) TO THE INTERSECTION WITH CHAPEL
 AB5643'ROAD AND THE STATION ON THE RIGHT.
 AB5643'
 AB5643'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5643'MONUMENT FLUSH WITH THE GROUND, 57.75 FT (17.60 M) SOUTH OF THE
 AB5643'CENTERLINE OF CHAPEL ROAD, 37.1 FT (11.3 M) SOUTH OF A CONCRETE
 AB5643'PROPERTY MARKER, 34.6 FT (10.5 M) EAST OF THE CENETRLINE OF THE
 AB5643'WESTBOUND LANE OF RT 50 AND 17.8 FT (5.4 M) NORTH OF A LIGHT POLE
 AB5643'SUPPORTING A TRAFFIC CONTROL SIGNAL.
 AB5643
 AB5643                          STATION RECOVERY (1999)
 AB5643
 AB5643'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5643'RECOVERED AS DESCRIBED.
 AB5643
 AB5643                          STATION RECOVERY (2002)
 AB5643
 AB5643'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5643'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5644 ***********************************************************************
 AB5644  DESIGNATION -  GPS 038
 AB5644  PID         -  AB5644
 AB5644  STATE/COUNTY-  MD/TALBOT
 AB5644  COUNTRY     -  US
 AB5644  USGS QUAD   -  EASTON (2016)
 AB5644
 AB5644                         *CURRENT SURVEY CONTROL
 AB5644  ______________________________________________________________________
 AB5644* NAD 83(2011) POSITION- 38 47 12.82311(N) 076 03 37.61603(W)   ADJUSTED
 AB5644* NAD 83(2011) ELLIP HT-   -16.447 (meters)        (06/27/12)   ADJUSTED
 AB5644* NAD 83(2011) EPOCH   -  2010.00
 AB5644* NAVD 88 ORTHO HEIGHT -    18.224 (meters)       59.79  (feet) ADJUSTED
 AB5644  ______________________________________________________________________
 AB5644  GEOID HEIGHT    -        -34.668 (meters)                     GEOID18
 AB5644  NAD 83(2011) X  -  1,199,231.157 (meters)                     COMP
 AB5644  NAD 83(2011) Y  - -4,831,563.471 (meters)                     COMP
 AB5644  NAD 83(2011) Z  -  3,973,893.755 (meters)                     COMP
 AB5644  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 AB5644  DYNAMIC HEIGHT  -         18.213 (meters)       59.75  (feet) COMP
 AB5644  MODELED GRAVITY -    980,037.3   (mgal)                       NAVD 88
 AB5644
 AB5644  VERT ORDER      -  SECOND    CLASS I
 AB5644
 AB5644  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5644  Standards:
 AB5644         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5644            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5644  -------------------------------------------------------------------
 AB5644  NETWORK    0.47   0.86           0.20   0.18   0.44     -0.06146433
 AB5644  -------------------------------------------------------------------
 AB5644  Click here for local accuracies and other accuracy information.
 AB5644
 AB5644.The horizontal coordinates were established by GPS observations
 AB5644.and adjusted by the National Geodetic Survey in June 2012.
 AB5644
 AB5644.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5644.been affixed to the stable North American tectonic plate. See 
 AB5644.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5644
 AB5644.The horizontal coordinates are valid at the epoch date displayed above
 AB5644.which is a decimal equivalence of Year/Month/Day.
 AB5644
 AB5644.The orthometric height was determined by differential leveling and
 AB5644.adjusted by the NATIONAL GEODETIC SURVEY
 AB5644.in September 2004.
 AB5644
 AB5644.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5644.GEOID18 height accuracy estimate available here.
 AB5644
 AB5644.Click photographs - Photos may exist for this station.
 AB5644
 AB5644.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5644
 AB5644.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5644
 AB5644.The ellipsoidal height was determined by GPS observations
 AB5644.and is referenced to NAD 83.
 AB5644
 AB5644.The dynamic height is computed by dividing the NAVD 88
 AB5644.geopotential number by the normal gravity value computed on the
 AB5644.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5644.degrees latitude (g = 980.6199 gals.).
 AB5644
 AB5644.The modeled gravity was interpolated from observed gravity values.
 AB5644
 AB5644. The following values were computed from the NAD 83(2011) position.
 AB5644
 AB5644;                    North         East     Units Scale Factor Converg.
 AB5644;SPC MD       -   124,769.959   481,628.074   MT  0.99995105   +0 35 22.9
 AB5644;SPC MD       -   409,349.44  1,580,141.44   sFT  0.99995105   +0 35 22.9
 AB5644;UTM  18      - 4,293,662.513   407,897.915   MT  0.99970446   -0 39 51.6
 AB5644
 AB5644!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5644!SPC MD       -   1.00000258  x   0.99995105  =   0.99995363
 AB5644!UTM  18      -   1.00000258  x   0.99970446  =   0.99970704
 AB5644
 AB5644:                Primary Azimuth Mark                     Grid Az
 AB5644:SPC MD       -  GPS 037                                  003 11 42.3
 AB5644:UTM  18      -  GPS 037                                  004 26 56.8
 AB5644
 AB5644_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0789793662(NAD 83)
 AB5644
 AB5644|---------------------------------------------------------------------|
 AB5644| PID    Reference Object                     Distance      Geod. Az  |
 AB5644|                                                           dddmmss.s |
 AB5644| AB5643 GPS 037                             APPROX. 0.7 KM 0034705.2 |
 AB5644| AB5645 GPS 039                             APPROX. 1.2 KM 1633543.9 |
 AB5644| AB5658 HOTEL                               486.038 METERS 1683800.2 |
 AB5644| AB5646 GPS 040                             APPROX. 1.7 KM 1712344.7 |
 AB5644|---------------------------------------------------------------------|
 AB5644
 AB5644                          SUPERSEDED SURVEY CONTROL
 AB5644
 AB5644  NAD 83(2007)-  38 47 12.82333(N)    076 03 37.61673(W) AD(2002.00) 0
 AB5644  ELLIP H (02/10/07)  -16.416  (m)                       GP(2002.00)    
 AB5644  ELLIP H (08/30/02)  -16.412  (m)                       GP(       ) 4 2
 AB5644  NAD 83(1991)-  38 47 12.82394(N)    076 03 37.61715(W) AD(       ) 1
 AB5644  ELLIP H (08/02/96)  -16.356  (m)                       GP(       ) 3 1
 AB5644  NAVD 88 (08/02/96)   18.2    (m)  GEOID93  model used  GPS OBS        
 AB5644
 AB5644.Superseded values are not recommended for survey control.
 AB5644
 AB5644.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5644.See file dsdata.pdf to determine how the superseded data were derived.
 AB5644
 AB5644_MARKER: DD = SURVEY DISK
 AB5644_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5644_STAMPING: NO.GPS 038
 AB5644_MARK LOGO: MD0480
 AB5644_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5644_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5644+STABILITY: SURFACE MOTION
 AB5644_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5644+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5644
 AB5644  HISTORY     - Date     Condition        Report By
 AB5644  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5644  HISTORY     - 19991007 GOOD             MDSHA
 AB5644  HISTORY     - 20020310 GOOD             USPSQD
 AB5644  HISTORY     - 20051109 GOOD             USPSQD
 AB5644
 AB5644                          STATION DESCRIPTION
 AB5644
 AB5644'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5644'THE STATION IS LOCATED ABOUT 1.25 MI (2.01 KM) NORTHEAST OF THE CENTER
 AB5644'OF EASTON.
 AB5644'
 AB5644'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5644'NORTH ON RT 50 FOR 1.0 MI (1.6 KM) TO THE STATION ON THE LEFT NEAR
 AB5644'MILE MARKER 64.
 AB5644'
 AB5644'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5644'MONUMENT SET FLUSH WITH THE GROUND, 48.0 FT (14.6 M) WEST OF THE
 AB5644'CENTERLINE OF THE EASTBOUND LANE OF RT 50, 103.8 FT (31.6 M) NORTH OF
 AB5644'POWER POLE NO. 15K, 74.2 FT (22.6 M) SOUTH OF AN UNNUMBERED POWER POLE
 AB5644'AND 151.0 FT (46.0 M) SOUTH OF A FIRE HYDRANT.
 AB5644
 AB5644                          STATION RECOVERY (1999)
 AB5644
 AB5644'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5644'RECOVERED AS DESCRIBED.
 AB5644
 AB5644                          STATION RECOVERY (2002)
 AB5644
 AB5644'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5644'RECOVERED IN GOOD CONDITION.
 AB5644
 AB5644                          STATION RECOVERY (2005)
 AB5644
 AB5644'RECOVERY NOTE BY US POWER SQUADRON 2005 (ALM)
 AB5644'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5645 ***********************************************************************
 AB5645  DESIGNATION -  GPS 039
 AB5645  PID         -  AB5645
 AB5645  STATE/COUNTY-  MD/TALBOT
 AB5645  COUNTRY     -  US
 AB5645  USGS QUAD   -  EASTON (2016)
 AB5645
 AB5645                         *CURRENT SURVEY CONTROL
 AB5645  ______________________________________________________________________
 AB5645* NAD 83(2011) POSITION- 38 46 35.74364(N) 076 03 23.67078(W)   ADJUSTED
 AB5645* NAD 83(2011) ELLIP HT-   -19.267 (meters)        (06/27/12)   ADJUSTED
 AB5645* NAD 83(2011) EPOCH   -  2010.00
 AB5645* NAVD 88 ORTHO HEIGHT -    15.436 (meters)       50.64  (feet) ADJUSTED
 AB5645  ______________________________________________________________________
 AB5645  GEOID HEIGHT    -        -34.695 (meters)                     GEOID18
 AB5645  NAD 83(2011) X  -  1,199,729.851 (meters)                     COMP
 AB5645  NAD 83(2011) Y  - -4,832,175.318 (meters)                     COMP
 AB5645  NAD 83(2011) Z  -  3,973,000.667 (meters)                     COMP
 AB5645  LAPLACE CORR    -         -3.12  (seconds)                    DEFLEC18
 AB5645  DYNAMIC HEIGHT  -         15.426 (meters)       50.61  (feet) COMP
 AB5645  MODELED GRAVITY -    980,036.0   (mgal)                       NAVD 88
 AB5645
 AB5645  VERT ORDER      -  SECOND    CLASS I
 AB5645
 AB5645  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5645  Standards:
 AB5645         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5645            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5645  -------------------------------------------------------------------
 AB5645  NETWORK    0.49   0.92           0.21   0.19   0.47     -0.05178004
 AB5645  -------------------------------------------------------------------
 AB5645  Click here for local accuracies and other accuracy information.
 AB5645
 AB5645.The horizontal coordinates were established by GPS observations
 AB5645.and adjusted by the National Geodetic Survey in June 2012.
 AB5645
 AB5645.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5645.been affixed to the stable North American tectonic plate. See 
 AB5645.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5645
 AB5645.The horizontal coordinates are valid at the epoch date displayed above
 AB5645.which is a decimal equivalence of Year/Month/Day.
 AB5645
 AB5645.The orthometric height was determined by differential leveling and
 AB5645.adjusted by the NATIONAL GEODETIC SURVEY
 AB5645.in September 2004.
 AB5645
 AB5645.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5645.GEOID18 height accuracy estimate available here.
 AB5645
 AB5645.Click photographs - Photos may exist for this station.
 AB5645
 AB5645.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5645
 AB5645.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5645
 AB5645.The ellipsoidal height was determined by GPS observations
 AB5645.and is referenced to NAD 83.
 AB5645
 AB5645.The dynamic height is computed by dividing the NAVD 88
 AB5645.geopotential number by the normal gravity value computed on the
 AB5645.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5645.degrees latitude (g = 980.6199 gals.).
 AB5645
 AB5645.The modeled gravity was interpolated from observed gravity values.
 AB5645
 AB5645. The following values were computed from the NAD 83(2011) position.
 AB5645
 AB5645;                    North         East     Units Scale Factor Converg.
 AB5645;SPC MD       -   123,630.147   481,976.423   MT  0.99995134   +0 35 31.7
 AB5645;SPC MD       -   405,609.91  1,581,284.31   sFT  0.99995134   +0 35 31.7
 AB5645;UTM  18      - 4,292,515.634   408,221.157   MT  0.99970372   -0 39 42.3
 AB5645
 AB5645!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5645!SPC MD       -   1.00000302  x   0.99995134  =   0.99995436
 AB5645!UTM  18      -   1.00000302  x   0.99970372  =   0.99970674
 AB5645
 AB5645:                Primary Azimuth Mark                     Grid Az
 AB5645:SPC MD       -  GPS 040                                  188 52 51.4
 AB5645:UTM  18      -  GPS 040                                  190 08 05.4
 AB5645
 AB5645_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0822192515(NAD 83)
 AB5645
 AB5645|---------------------------------------------------------------------|
 AB5645| PID    Reference Object                     Distance      Geod. Az  |
 AB5645|                                                           dddmmss.s |
 AB5645| AB5646 GPS 040                             APPROX. 0.5 KM 1892823.1 |
 AB5645|---------------------------------------------------------------------|
 AB5645
 AB5645                          SUPERSEDED SURVEY CONTROL
 AB5645
 AB5645  NAD 83(2007)-  38 46 35.74387(N)    076 03 23.67147(W) AD(2002.00) 0
 AB5645  ELLIP H (02/10/07)  -19.236  (m)                       GP(2002.00)    
 AB5645  ELLIP H (08/30/02)  -19.233  (m)                       GP(       ) 4 2
 AB5645  NAD 83(1991)-  38 46 35.74452(N)    076 03 23.67186(W) AD(       ) 1
 AB5645  ELLIP H (08/02/96)  -19.176  (m)                       GP(       ) 3 1
 AB5645  NAVD 88 (08/02/96)   15.5    (m)  GEOID93  model used  GPS OBS        
 AB5645
 AB5645.Superseded values are not recommended for survey control.
 AB5645
 AB5645.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5645.See file dsdata.pdf to determine how the superseded data were derived.
 AB5645
 AB5645_MARKER: DD = SURVEY DISK
 AB5645_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5645_STAMPING: NO. GPS 039
 AB5645_MARK LOGO: MD0480
 AB5645_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5645_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5645+STABILITY: SURFACE MOTION
 AB5645_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5645+SATELLITE: SATELLITE OBSERVATIONS - April 04, 2011
 AB5645
 AB5645  HISTORY     - Date     Condition        Report By
 AB5645  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5645  HISTORY     - 19991007 GOOD             MDSHA
 AB5645  HISTORY     - 20020312 GOOD             USPSQD
 AB5645  HISTORY     - 20051109 GOOD             USPSQD
 AB5645  HISTORY     - 20110404 GOOD             JMTMD
 AB5645
 AB5645                          STATION DESCRIPTION
 AB5645
 AB5645'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5645'THE STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) EAST OF THE CENTER OF
 AB5645'EASTON.
 AB5645'
 AB5645'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD) GO
 AB5645'EAST ON RT 331 FOR 0.1 MI (0.2 KM) TO THE INTERSECTION WITH ELLIOTT
 AB5645'ROAD.  TURN LEFT AND GO NORTH ON ELLIOTT ROAD FOR 0.35 MI (0.56 KM) TO
 AB5645'THE ENTRANCE TO THE TALBOT BANK ON THE RIGHT AND THE STATION ON THE
 AB5645'LEFT.
 AB5645'
 AB5645'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5645'MONUMENT FLUSH WITH THE GROUND, 19.0 FT (5.8 M) EAST OF A 6 FT (1.8 M)
 AB5645'HIGH CHAIN LINK FENCE, 32.0 FT (9.8 M) WEST OF THE CENTERLINE OF THE
 AB5645'ROAD AND 79.0 FT (24.1 M) NORTHWEST OF THE BANK SIGN.
 AB5645
 AB5645                          STATION RECOVERY (1999)
 AB5645
 AB5645'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5645'RECOVERED AS DESCRIBED.
 AB5645
 AB5645                          STATION RECOVERY (2002)
 AB5645
 AB5645'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5645'THE MARK IS SET AT THE BASE OF A CARSONITE POST.
 AB5645
 AB5645                          STATION RECOVERY (2005)
 AB5645
 AB5645'RECOVERY NOTE BY US POWER SQUADRON 2005 (AEM)
 AB5645'RECOVERED IN GOOD CONDITION.
 AB5645
 AB5645                          STATION RECOVERY (2011)
 AB5645
 AB5645'RECOVERY NOTE BY JMT ENGINEERING 2011 (JLS)
 AB5645'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5646 ***********************************************************************
 AB5646  DESIGNATION -  GPS 040
 AB5646  PID         -  AB5646
 AB5646  STATE/COUNTY-  MD/TALBOT
 AB5646  COUNTRY     -  US
 AB5646  USGS QUAD   -  EASTON (2016)
 AB5646
 AB5646                         *CURRENT SURVEY CONTROL
 AB5646  ______________________________________________________________________
 AB5646* NAD 83(2011) POSITION- 38 46 19.06603(N) 076 03 27.22556(W)   ADJUSTED
 AB5646* NAD 83(2011) ELLIP HT-   -21.746 (meters)        (06/27/12)   ADJUSTED
 AB5646* NAD 83(2011) EPOCH   -  2010.00
 AB5646* NAVD 88 ORTHO HEIGHT -    12.960 (meters)       42.52  (feet) ADJUSTED
 AB5646  ______________________________________________________________________
 AB5646  GEOID HEIGHT    -        -34.702 (meters)                     GEOID18
 AB5646  NAD 83(2011) X  -  1,199,723.708 (meters)                     COMP
 AB5646  NAD 83(2011) Y  - -4,832,506.697 (meters)                     COMP
 AB5646  NAD 83(2011) Z  -  3,972,598.175 (meters)                     COMP
 AB5646  LAPLACE CORR    -         -3.12  (seconds)                    DEFLEC18
 AB5646  DYNAMIC HEIGHT  -         12.952 (meters)       42.49  (feet) COMP
 AB5646  MODELED GRAVITY -    980,035.6   (mgal)                       NAVD 88
 AB5646
 AB5646  VERT ORDER      -  SECOND    CLASS I
 AB5646
 AB5646  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5646  Standards:
 AB5646         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5646            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5646  -------------------------------------------------------------------
 AB5646  NETWORK    0.44   1.04           0.19   0.17   0.53     -0.09318673
 AB5646  -------------------------------------------------------------------
 AB5646  Click here for local accuracies and other accuracy information.
 AB5646
 AB5646.The horizontal coordinates were established by GPS observations
 AB5646.and adjusted by the National Geodetic Survey in June 2012.
 AB5646
 AB5646.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5646.been affixed to the stable North American tectonic plate. See 
 AB5646.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5646
 AB5646.The horizontal coordinates are valid at the epoch date displayed above
 AB5646.which is a decimal equivalence of Year/Month/Day.
 AB5646
 AB5646.The orthometric height was determined by differential leveling and
 AB5646.adjusted by the NATIONAL GEODETIC SURVEY
 AB5646.in September 2004.
 AB5646
 AB5646.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5646.GEOID18 height accuracy estimate available here.
 AB5646
 AB5646.Click photographs - Photos may exist for this station.
 AB5646
 AB5646.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5646
 AB5646.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5646
 AB5646.The ellipsoidal height was determined by GPS observations
 AB5646.and is referenced to NAD 83.
 AB5646
 AB5646.The dynamic height is computed by dividing the NAVD 88
 AB5646.geopotential number by the normal gravity value computed on the
 AB5646.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5646.degrees latitude (g = 980.6199 gals.).
 AB5646
 AB5646.The modeled gravity was interpolated from observed gravity values.
 AB5646
 AB5646. The following values were computed from the NAD 83(2011) position.
 AB5646
 AB5646;                    North         East     Units Scale Factor Converg.
 AB5646;SPC MD       -   123,115.035   481,895.934   MT  0.99995148   +0 35 29.4
 AB5646;SPC MD       -   403,919.91  1,581,020.24   sFT  0.99995148   +0 35 29.4
 AB5646;UTM  18      - 4,292,002.534   408,129.438   MT  0.99970393   -0 39 44.3
 AB5646
 AB5646!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5646!SPC MD       -   1.00000341  x   0.99995148  =   0.99995489
 AB5646!UTM  18      -   1.00000341  x   0.99970393  =   0.99970734
 AB5646
 AB5646:                Primary Azimuth Mark                     Grid Az
 AB5646:SPC MD       -  GPS 045                                  231 58 26.6
 AB5646:UTM  18      -  GPS 045                                  233 13 40.3
 AB5646
 AB5646_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0812992002(NAD 83)
 AB5646
 AB5646|---------------------------------------------------------------------|
 AB5646| PID    Reference Object                     Distance      Geod. Az  |
 AB5646|                                                           dddmmss.s |
 AB5646| AB5651 GPS 045                             APPROX. 1.3 KM 2323356.0 |
 AB5646|---------------------------------------------------------------------|
 AB5646
 AB5646                          SUPERSEDED SURVEY CONTROL
 AB5646
 AB5646  NAD 83(2007)-  38 46 19.06626(N)    076 03 27.22625(W) AD(2002.00) 0
 AB5646  ELLIP H (02/10/07)  -21.715  (m)                       GP(2002.00)    
 AB5646  ELLIP H (08/30/02)  -21.714  (m)                       GP(       ) 4 2
 AB5646  NAD 83(1991)-  38 46 19.06678(N)    076 03 27.22663(W) AD(       ) 1
 AB5646  ELLIP H (08/02/96)  -21.654  (m)                       GP(       ) 3 1
 AB5646  NAVD 88 (08/02/96)   13.0    (m)  GEOID93  model used  GPS OBS        
 AB5646
 AB5646.Superseded values are not recommended for survey control.
 AB5646
 AB5646.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5646.See file dsdata.pdf to determine how the superseded data were derived.
 AB5646
 AB5646_MARKER: DD = SURVEY DISK
 AB5646_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5646_STAMPING: NO. GPS 040
 AB5646_MARK LOGO: MD0480
 AB5646_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5646_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5646+STABILITY: SURFACE MOTION
 AB5646_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5646+SATELLITE: SATELLITE OBSERVATIONS - April 04, 2011
 AB5646
 AB5646  HISTORY     - Date     Condition        Report By
 AB5646  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5646  HISTORY     - 19991007 GOOD             MDSHA
 AB5646  HISTORY     - 20020312 GOOD             USPSQD
 AB5646  HISTORY     - 20051109 GOOD             USPSQD
 AB5646  HISTORY     - 20110404 GOOD             JMTMD
 AB5646
 AB5646                          STATION DESCRIPTION
 AB5646
 AB5646'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5646'THE STATION IS LOCATED ABOUT 1.0 MI (1.6 KM) EAST OF THE CENTER OF
 AB5646'EASTON.
 AB5646'
 AB5646'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5646'EAST ON RT 331 FOR 0.1 MI (0.2 KM) TO THE INTERSECTION WITH ELLIOTT RD
 AB5646'AND THE STATION ON THE LEFT.
 AB5646'
 AB5646'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5646'MONUMENT FLUSH WITH THE GROUND, 16.6 FT (5.1 M) SOUTHEAST OF A SEWER
 AB5646'MANHOLE, 40.3 FT (12.3 M) EAST OF THE CENTERLINE OF ELLIOTT ROAD,
 AB5646'27.0 FT (8.2 M) NORTH OF THE CENTERLINE OF RT 331, 11.0 FT (3.4 M)
 AB5646'NORTHWEST OF A STORM DRAIN MANHOLE AND 52.5 FT (16.0 M) WEST OF POWER
 AB5646'POLE NO. BE-92-140K.
 AB5646
 AB5646                          STATION RECOVERY (1999)
 AB5646
 AB5646'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5646'RECOVERED AS DESCRIBED.
 AB5646
 AB5646                          STATION RECOVERY (2002)
 AB5646
 AB5646'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5646'RECOVERED IN GOOD CONDITION.
 AB5646
 AB5646                          STATION RECOVERY (2005)
 AB5646
 AB5646'RECOVERY NOTE BY US POWER SQUADRON 2005 (AEM)
 AB5646'RECOVERED IN GOOD CONDITION.
 AB5646
 AB5646                          STATION RECOVERY (2011)
 AB5646
 AB5646'RECOVERY NOTE BY JMT ENGINEERING 2011 (JLS)
 AB5646'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5647 ***********************************************************************
 AB5647  DESIGNATION -  GPS 041
 AB5647  PID         -  AB5647
 AB5647  STATE/COUNTY-  MD/TALBOT
 AB5647  COUNTRY     -  US
 AB5647  USGS QUAD   -  EASTON (2016)
 AB5647
 AB5647                         *CURRENT SURVEY CONTROL
 AB5647  ______________________________________________________________________
 AB5647* NAD 83(2011) POSITION- 38 45 19.96425(N) 076 03 49.37366(W)   ADJUSTED
 AB5647* NAD 83(2011) ELLIP HT-   -24.227 (meters)        (06/27/12)   ADJUSTED
 AB5647* NAD 83(2011) EPOCH   -  2010.00
 AB5647* NAVD 88 ORTHO HEIGHT -    10.499 (meters)       34.45  (feet) ADJUSTED
 AB5647  ______________________________________________________________________
 AB5647  GEOID HEIGHT    -        -34.722 (meters)                     GEOID18
 AB5647  NAD 83(2011) X  -  1,199,479.154 (meters)                     COMP
 AB5647  NAD 83(2011) Y  - -4,833,741.099 (meters)                     COMP
 AB5647  NAD 83(2011) Z  -  3,971,175.573 (meters)                     COMP
 AB5647  LAPLACE CORR    -         -3.14  (seconds)                    DEFLEC18
 AB5647  DYNAMIC HEIGHT  -         10.493 (meters)       34.43  (feet) COMP
 AB5647  MODELED GRAVITY -    980,034.0   (mgal)                       NAVD 88
 AB5647
 AB5647  VERT ORDER      -  SECOND    CLASS I
 AB5647
 AB5647  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5647  Standards:
 AB5647         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5647            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5647  -------------------------------------------------------------------
 AB5647  NETWORK    0.53   1.29           0.22   0.21   0.66     -0.25251325
 AB5647  -------------------------------------------------------------------
 AB5647  Click here for local accuracies and other accuracy information.
 AB5647
 AB5647.The horizontal coordinates were established by GPS observations
 AB5647.and adjusted by the National Geodetic Survey in June 2012.
 AB5647
 AB5647.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5647.been affixed to the stable North American tectonic plate. See 
 AB5647.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5647
 AB5647.The horizontal coordinates are valid at the epoch date displayed above
 AB5647.which is a decimal equivalence of Year/Month/Day.
 AB5647
 AB5647.The orthometric height was determined by differential leveling and
 AB5647.adjusted by the NATIONAL GEODETIC SURVEY
 AB5647.in September 2004.
 AB5647
 AB5647.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5647.GEOID18 height accuracy estimate available here.
 AB5647
 AB5647.Click photographs - Photos may exist for this station.
 AB5647
 AB5647.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5647
 AB5647.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5647
 AB5647.The ellipsoidal height was determined by GPS observations
 AB5647.and is referenced to NAD 83.
 AB5647
 AB5647.The dynamic height is computed by dividing the NAVD 88
 AB5647.geopotential number by the normal gravity value computed on the
 AB5647.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5647.degrees latitude (g = 980.6199 gals.).
 AB5647
 AB5647.The modeled gravity was interpolated from observed gravity values.
 AB5647
 AB5647. The following values were computed from the NAD 83(2011) position.
 AB5647
 AB5647;                    North         East     Units Scale Factor Converg.
 AB5647;SPC MD       -   121,287.232   481,380.025   MT  0.99995204   +0 35 15.5
 AB5647;SPC MD       -   397,923.19  1,579,327.63   sFT  0.99995204   +0 35 15.5
 AB5647;UTM  18      - 4,290,186.905   407,573.799   MT  0.99970519   -0 39 57.4
 AB5647
 AB5647!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5647!SPC MD       -   1.00000380  x   0.99995204  =   0.99995584
 AB5647!UTM  18      -   1.00000380  x   0.99970519  =   0.99970899
 AB5647
 AB5647_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0757390186(NAD 83)
 AB5647
 AB5647|---------------------------------------------------------------------|
 AB5647| PID    Reference Object                     Distance      Geod. Az  |
 AB5647|                                                           dddmmss.s |
 AB5647| AB5648 GPS 042                             344.294 METERS 02133     |
 AB5647|---------------------------------------------------------------------|
 AB5647
 AB5647                          SUPERSEDED SURVEY CONTROL
 AB5647
 AB5647  NAD 83(2007)-  38 45 19.96448(N)    076 03 49.37436(W) AD(2002.00) 0
 AB5647  ELLIP H (02/10/07)  -24.195  (m)                       GP(2002.00)    
 AB5647  ELLIP H (08/30/02)  -24.206  (m)                       GP(       ) 4 2
 AB5647  NAD 83(1991)-  38 45 19.96477(N)    076 03 49.37467(W) AD(       ) 1
 AB5647  ELLIP H (08/02/96)  -24.145  (m)                       GP(       ) 3 1
 AB5647  NAVD 88 (08/02/96)   10.5    (m)  GEOID93  model used  GPS OBS        
 AB5647
 AB5647.Superseded values are not recommended for survey control.
 AB5647
 AB5647.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5647.See file dsdata.pdf to determine how the superseded data were derived.
 AB5647
 AB5647_MARKER: DD = SURVEY DISK
 AB5647_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5647_STAMPING: GPS 041
 AB5647_MARK LOGO: MD0480
 AB5647_PROJECTION: FLUSH
 AB5647_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5647_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5647+STABILITY: SURFACE MOTION
 AB5647_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5647+SATELLITE: SATELLITE OBSERVATIONS - July 23, 2014
 AB5647
 AB5647  HISTORY     - Date     Condition        Report By
 AB5647  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5647  HISTORY     - 19991007 GOOD             MDSHA
 AB5647  HISTORY     - 20020312 GOOD             USPSQD
 AB5647  HISTORY     - 20060401 GOOD             GEOCAC
 AB5647  HISTORY     - 20140723 GOOD             GEOCAC
 AB5647
 AB5647                          STATION DESCRIPTION
 AB5647
 AB5647'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5647'THE STATION IS LOCATED ABOUT 1.5 MI (2.4 KM) SOUTH OF THE CENTER OF
 AB5647'EASTON.
 AB5647'
 AB5647'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5647'SOUTH ON RT 50 FOR 1.15 MI (1.85 KM) TO A PAVED ENTRANCE TO THE
 AB5647'EASTON HIGH SCHOOL AND THE STATION ON THE RIGHT.
 AB5647'
 AB5647'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5647'MONUMENT FLUSH WITH THE GROUND, 14.3 FT (4.4 M) EAST OF A CHAIN LINK
 AB5647'FENCE, 42.4 FT (12.9 M) SOUTH OF THE CENTERLINE OF THE PAVED ENTRANCE
 AB5647'AND 38.5 FT (11.7 M) WEST OF THE CENTERLINE OF THE EASTBOUND LANE.
 AB5647
 AB5647                          STATION RECOVERY (1999)
 AB5647
 AB5647'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5647'RECOVERED AS DESCRIBED.
 AB5647
 AB5647                          STATION RECOVERY (2002)
 AB5647
 AB5647'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5647'THE MARK IS SET AT THE BASE OF A CARSONITE POST.
 AB5647
 AB5647                          STATION RECOVERY (2006)
 AB5647
 AB5647'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 AB5647'STATION IS ADJACENT TO A CARSONITE WITNESS POST, WHICH IS IN POOR
 AB5647'CONDITION.
 AB5647
 AB5647                          STATION RECOVERY (2014)
 AB5647
 AB5647'RECOVERY NOTE BY GEOCACHING 2014 (DRD)
 AB5647'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5649 ***********************************************************************
 AB5649  DESIGNATION -  GPS 043
 AB5649  PID         -  AB5649
 AB5649  STATE/COUNTY-  MD/TALBOT
 AB5649  COUNTRY     -  US
 AB5649  USGS QUAD   -  TRAPPE (2016)
 AB5649
 AB5649                         *CURRENT SURVEY CONTROL
 AB5649  ______________________________________________________________________
 AB5649* NAD 83(2011) POSITION- 38 44 47.53442(N) 076 01 14.04240(W)   ADJUSTED
 AB5649* NAD 83(2011) ELLIP HT-   -24.647 (meters)        (06/27/12)   ADJUSTED
 AB5649* NAD 83(2011) EPOCH   -  2010.00
 AB5649* NAVD 88 ORTHO HEIGHT -    10.2   (meters)       33.    (feet) GPS OBS
 AB5649  ______________________________________________________________________
 AB5649  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5649  GEOID HEIGHT    -        -35.158 (meters)                     GEOID93
 AB5649  GEOID HEIGHT    -        -34.812 (meters)                     GEOID18
 AB5649  NAD 83(2011) X  -  1,203,270.078 (meters)                     COMP
 AB5649  NAD 83(2011) Y  - -4,833,443.529 (meters)                     COMP
 AB5649  NAD 83(2011) Z  -  3,970,395.427 (meters)                     COMP
 AB5649  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 AB5649
 AB5649  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5649  Standards:
 AB5649         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5649            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5649  -------------------------------------------------------------------
 AB5649  NETWORK    0.44   1.10           0.19   0.17   0.56     -0.06664218
 AB5649  -------------------------------------------------------------------
 AB5649  Click here for local accuracies and other accuracy information.
 AB5649
 AB5649.The horizontal coordinates were established by GPS observations
 AB5649.and adjusted by the National Geodetic Survey in June 2012.
 AB5649
 AB5649.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5649.been affixed to the stable North American tectonic plate. See 
 AB5649.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5649
 AB5649.The horizontal coordinates are valid at the epoch date displayed above
 AB5649.which is a decimal equivalence of Year/Month/Day.
 AB5649
 AB5649.The orthometric height was determined by GPS observations and a
 AB5649.high-resolution geoid model.
 AB5649
 AB5649.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5649.GEOID18 height accuracy estimate available here.
 AB5649
 AB5649.Click photographs - Photos may exist for this station.
 AB5649
 AB5649.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5649
 AB5649.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5649
 AB5649.The ellipsoidal height was determined by GPS observations
 AB5649.and is referenced to NAD 83.
 AB5649
 AB5649. The following values were computed from the NAD 83(2011) position.
 AB5649
 AB5649;                    North         East     Units Scale Factor Converg.
 AB5649;SPC MD       -   120,326.672   485,140.913   MT  0.99995238   +0 36 53.0
 AB5649;SPC MD       -   394,771.76  1,591,666.48   sFT  0.99995238   +0 36 53.0
 AB5649;UTM  18      - 4,289,144.561   411,311.834   MT  0.99969686   -0 38 19.6
 AB5649
 AB5649!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5649!SPC MD       -   1.00000387  x   0.99995238  =   0.99995625
 AB5649!UTM  18      -   1.00000387  x   0.99969686  =   0.99970073
 AB5649
 AB5649_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1131189144(NAD 83)
 AB5649
 AB5649|---------------------------------------------------------------------|
 AB5649| PID    Reference Object                     Distance      Geod. Az  |
 AB5649|                                                           dddmmss.s |
 AB5649| AB5650 GPS 044                             306.335 METERS 12633     |
 AB5649|---------------------------------------------------------------------|
 AB5649
 AB5649                          SUPERSEDED SURVEY CONTROL
 AB5649
 AB5649  NAD 83(2007)-  38 44 47.53465(N)    076 01 14.04310(W) AD(2002.00) 0
 AB5649  ELLIP H (02/10/07)  -24.615  (m)                       GP(2002.00)    
 AB5649  ELLIP H (08/30/02)  -24.628  (m)                       GP(       ) 4 2
 AB5649  NAD 83(1991)-  38 44 47.53518(N)    076 01 14.04344(W) AD(       ) 1
 AB5649  ELLIP H (08/02/96)  -24.551  (m)                       GP(       ) 3 1
 AB5649
 AB5649.Superseded values are not recommended for survey control.
 AB5649
 AB5649.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5649.See file dsdata.pdf to determine how the superseded data were derived.
 AB5649
 AB5649_MARKER: DD = SURVEY DISK
 AB5649_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5649_STAMPING: NO.GPS 043
 AB5649_MARK LOGO: MD0480
 AB5649_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5649_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5649+STABILITY: SURFACE MOTION
 AB5649_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5649+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB5649
 AB5649  HISTORY     - Date     Condition        Report By
 AB5649  HISTORY     - 1995     MONUMENTED       EASTUT
 AB5649
 AB5649                          STATION DESCRIPTION
 AB5649
 AB5649'DESCRIBED BY EASTON UTILITIES 1995 (BKS)
 AB5649'THE STATION IS LOCATED ABOUT 3.4 MI (5.5 KM) SOUTHEAST OF THE CENTER
 AB5649'OF EASTON.
 AB5649'
 AB5649'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5649'EAST ON RT 331 FOR 1.8 MI (2.9 KM) TO THE INTERSECTION WITH DOVER NECK
 AB5649'ROAD.  TURN RIGHT AND GO SOUTH ON DOVER NECK ROAD FOR 1.4 MI (2.3 KM)
 AB5649'TO THE INTERSECTION WITH BARKERS LANDING ROAD (SOUTH DOVER ROAD).
 AB5649'TURN LEFT ON BARKERS LANDING ROAD AND GO SOUTHEAST FOR 0.85 MI
 AB5649'(1.37 KM) TO THE STATION ON THE LEFT.
 AB5649'
 AB5649'MONUMENT FLUSH WITH THE GROUND, 14.5 FT (4.4 M) SOUTHWEST OF THE
 AB5649'SOUTHEAST CORNER OF A FENCE AROUND A SHOOTING RANGE AND 24.9 FT
 AB5649'(7.6 M) NORTHEAST OF THE CENTERLINE OF BARKERS LANDING ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5650 ***********************************************************************
 AB5650  DESIGNATION -  GPS 044
 AB5650  PID         -  AB5650
 AB5650  STATE/COUNTY-  MD/TALBOT
 AB5650  COUNTRY     -  US
 AB5650  USGS QUAD   -  TRAPPE (2016)
 AB5650
 AB5650                         *CURRENT SURVEY CONTROL
 AB5650  ______________________________________________________________________
 AB5650* NAD 83(2011) POSITION- 38 44 41.61840(N) 076 01 03.85176(W)   ADJUSTED
 AB5650* NAD 83(2011) ELLIP HT-   -26.379 (meters)        (06/27/12)   ADJUSTED
 AB5650* NAD 83(2011) EPOCH   -  2010.00
 AB5650* NAVD 88 ORTHO HEIGHT -     8.5   (meters)       28.    (feet) GPS OBS
 AB5650  ______________________________________________________________________
 AB5650  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5650  GEOID HEIGHT    -        -35.166 (meters)                     GEOID93
 AB5650  GEOID HEIGHT    -        -34.820 (meters)                     GEOID18
 AB5650  NAD 83(2011) X  -  1,203,536.137 (meters)                     COMP
 AB5650  NAD 83(2011) Y  - -4,833,493.556 (meters)                     COMP
 AB5650  NAD 83(2011) Z  -  3,970,252.062 (meters)                     COMP
 AB5650  LAPLACE CORR    -         -3.48  (seconds)                    DEFLEC18
 AB5650
 AB5650  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5650  Standards:
 AB5650         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5650            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5650  -------------------------------------------------------------------
 AB5650  NETWORK    0.72   1.51           0.34   0.23   0.77      0.02777630
 AB5650  -------------------------------------------------------------------
 AB5650  Click here for local accuracies and other accuracy information.
 AB5650
 AB5650.The horizontal coordinates were established by GPS observations
 AB5650.and adjusted by the National Geodetic Survey in June 2012.
 AB5650
 AB5650.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5650.been affixed to the stable North American tectonic plate. See 
 AB5650.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5650
 AB5650.The horizontal coordinates are valid at the epoch date displayed above
 AB5650.which is a decimal equivalence of Year/Month/Day.
 AB5650
 AB5650.The orthometric height was determined by GPS observations and a
 AB5650.high-resolution geoid model.
 AB5650
 AB5650.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5650.GEOID18 height accuracy estimate available here.
 AB5650
 AB5650.Click photographs - Photos may exist for this station.
 AB5650
 AB5650.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5650
 AB5650.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5650
 AB5650.The ellipsoidal height was determined by GPS observations
 AB5650.and is referenced to NAD 83.
 AB5650
 AB5650. The following values were computed from the NAD 83(2011) position.
 AB5650
 AB5650;                    North         East     Units Scale Factor Converg.
 AB5650;SPC MD       -   120,146.907   485,388.939   MT  0.99995245   +0 36 59.4
 AB5650;SPC MD       -   394,181.98  1,592,480.21   sFT  0.99995245   +0 36 59.4
 AB5650;UTM  18      - 4,288,959.460   411,555.805   MT  0.99969632   -0 38 13.2
 AB5650
 AB5650!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5650!SPC MD       -   1.00000414  x   0.99995245  =   0.99995659
 AB5650!UTM  18      -   1.00000414  x   0.99969632  =   0.99970046
 AB5650
 AB5650_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1155588959(NAD 83)
 AB5650
 AB5650|---------------------------------------------------------------------|
 AB5650| PID    Reference Object                     Distance      Geod. Az  |
 AB5650|                                                           dddmmss.s |
 AB5650| AB5649 GPS 043                             306.335 METERS 30633     |
 AB5650|---------------------------------------------------------------------|
 AB5650
 AB5650                          SUPERSEDED SURVEY CONTROL
 AB5650
 AB5650  NAD 83(2007)-  38 44 41.61863(N)    076 01 03.85246(W) AD(2002.00) 0
 AB5650  ELLIP H (02/10/07)  -26.348  (m)                       GP(2002.00)    
 AB5650  ELLIP H (08/30/02)  -26.360  (m)                       GP(       ) 4 2
 AB5650  NAD 83(1991)-  38 44 41.61917(N)    076 01 03.85278(W) AD(       ) 1
 AB5650  ELLIP H (08/02/96)  -26.285  (m)                       GP(       ) 3 1
 AB5650
 AB5650.Superseded values are not recommended for survey control.
 AB5650
 AB5650.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5650.See file dsdata.pdf to determine how the superseded data were derived.
 AB5650
 AB5650_MARKER: DD = SURVEY DISK
 AB5650_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5650_STAMPING: NO.GPS 044
 AB5650_MARK LOGO: MD0480
 AB5650_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 AB5650_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5650+STABILITY: SURFACE MOTION
 AB5650_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5650+SATELLITE: SATELLITE OBSERVATIONS - 1996
 AB5650
 AB5650  HISTORY     - Date     Condition        Report By
 AB5650  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5650
 AB5650                          STATION DESCRIPTION
 AB5650
 AB5650'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5650'THE STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) SOUTHEAST OF THE CENTER
 AB5650'OF EASTON.
 AB5650'
 AB5650'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5650'EAST ON RT 331 FOR 1.8 MI (2.9 KM) TO THE INTERSECTION WITH DOVER NECK
 AB5650'ROAD.  TURN RIGHT AND GO SOUTH ON DOVER NECK ROAD FOR 1.4 MI (2.3 KM)
 AB5650'TO THE INTERSECTION WITH BARKERS LANDING ROAD (SOUTH DOVER ROAD).
 AB5650'TURN LEFT ON BARKERS LANDING ROAD AND GO SOUTHEAST FOR 1.05 MI
 AB5650'(1.69 KM) TO THE STATION ON THE LEFT.
 AB5650'
 AB5650'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5650'MONUMENT FLUSH WITH THE GROUND, 24.0 FT (7.3 M) NORTHEAST OF THE
 AB5650'CENTERLINE OF THE ROAD, 68.0 FT (20.7 M) NORTH OF THE NORTHWEST CORNER
 AB5650'OF A WOODEN SPLIT RAIL FENCE, 146.0 FT (44.5 M) NORTHWEST OF THE
 AB5650'WESTERMOST OF TWO STONE PILLARS AND 24.4 FT (7.4 M) WEST OF THE
 AB5650'SOUTHWEST CORNER OF A WIRE FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5651 ***********************************************************************
 AB5651  DESIGNATION -  GPS 045
 AB5651  PID         -  AB5651
 AB5651  STATE/COUNTY-  MD/TALBOT
 AB5651  COUNTRY     -  US
 AB5651  USGS QUAD   -  EASTON (2016)
 AB5651
 AB5651                         *CURRENT SURVEY CONTROL
 AB5651  ______________________________________________________________________
 AB5651* NAD 83(2011) POSITION- 38 45 53.15601(N) 076 04 10.45337(W)   ADJUSTED
 AB5651* NAD 83(2011) ELLIP HT-   -23.792 (meters)        (06/27/12)   ADJUSTED
 AB5651* NAD 83(2011) EPOCH   -  2010.00
 AB5651* NAVD 88 ORTHO HEIGHT -    10.897 (meters)       35.75  (feet) ADJUSTED
 AB5651  ______________________________________________________________________
 AB5651  GEOID HEIGHT    -        -34.696 (meters)                     GEOID18
 AB5651  NAD 83(2011) X  -  1,198,830.971 (meters)                     COMP
 AB5651  NAD 83(2011) Y  - -4,833,242.053 (meters)                     COMP
 AB5651  NAD 83(2011) Z  -  3,971,973.951 (meters)                     COMP
 AB5651  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 AB5651  DYNAMIC HEIGHT  -         10.891 (meters)       35.73  (feet) COMP
 AB5651  MODELED GRAVITY -    980,035.2   (mgal)                       NAVD 88
 AB5651
 AB5651  VERT ORDER      -  SECOND    CLASS I
 AB5651
 AB5651  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5651  Standards:
 AB5651         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5651            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5651  -------------------------------------------------------------------
 AB5651  NETWORK    0.44   1.20           0.19   0.17   0.61     -0.08457507
 AB5651  -------------------------------------------------------------------
 AB5651  Click here for local accuracies and other accuracy information.
 AB5651
 AB5651.The horizontal coordinates were established by GPS observations
 AB5651.and adjusted by the National Geodetic Survey in June 2012.
 AB5651
 AB5651.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5651.been affixed to the stable North American tectonic plate. See 
 AB5651.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5651
 AB5651.The horizontal coordinates are valid at the epoch date displayed above
 AB5651.which is a decimal equivalence of Year/Month/Day.
 AB5651
 AB5651.The orthometric height was determined by differential leveling and
 AB5651.adjusted by the NATIONAL GEODETIC SURVEY
 AB5651.in September 2004.
 AB5651
 AB5651.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5651.GEOID18 height accuracy estimate available here.
 AB5651
 AB5651.Click photographs - Photos may exist for this station.
 AB5651
 AB5651.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5651
 AB5651.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5651
 AB5651.The ellipsoidal height was determined by GPS observations
 AB5651.and is referenced to NAD 83.
 AB5651
 AB5651.The dynamic height is computed by dividing the NAVD 88
 AB5651.geopotential number by the normal gravity value computed on the
 AB5651.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5651.degrees latitude (g = 980.6199 gals.).
 AB5651
 AB5651.The modeled gravity was interpolated from observed gravity values.
 AB5651
 AB5651. The following values were computed from the NAD 83(2011) position.
 AB5651
 AB5651;                    North         East     Units Scale Factor Converg.
 AB5651;SPC MD       -   122,305.439   480,860.666   MT  0.99995172   +0 35 02.3
 AB5651;SPC MD       -   401,263.76  1,577,623.70   sFT  0.99995172   +0 35 02.3
 AB5651;UTM  18      - 4,291,215.978   407,076.963   MT  0.99970633   -0 40 11.0
 AB5651
 AB5651!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5651!SPC MD       -   1.00000373  x   0.99995172  =   0.99995545
 AB5651!UTM  18      -   1.00000373  x   0.99970633  =   0.99971006
 AB5651
 AB5651:                Primary Azimuth Mark                     Grid Az
 AB5651:SPC MD       -  GPS 030                                  238 16 32.3
 AB5651:UTM  18      -  GPS 030                                  239 31 45.6
 AB5651
 AB5651_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0707691215(NAD 83)
 AB5651
 AB5651|---------------------------------------------------------------------|
 AB5651| PID    Reference Object                     Distance      Geod. Az  |
 AB5651|                                                           dddmmss.s |
 AB5651| AB5636 GPS 030                             APPROX. 0.9 KM 2385134.6 |
 AB5651| AB5637 GPS 031                             APPROX. 1.2 KM 2702130.0 |
 AB5651|---------------------------------------------------------------------|
 AB5651
 AB5651                          SUPERSEDED SURVEY CONTROL
 AB5651
 AB5651  NAD 83(2007)-  38 45 53.15624(N)    076 04 10.45405(W) AD(2002.00) 0
 AB5651  ELLIP H (02/10/07)  -23.760  (m)                       GP(2002.00)    
 AB5651  ELLIP H (08/30/02)  -23.760  (m)                       GP(       ) 4 2
 AB5651  NAD 83(1991)-  38 45 53.15673(N)    076 04 10.45452(W) AD(       ) 1
 AB5651  ELLIP H (08/02/96)  -23.697  (m)                       GP(       ) 3 1
 AB5651  NAVD 88 (08/02/96)   10.9    (m)  GEOID93  model used  GPS OBS        
 AB5651
 AB5651.Superseded values are not recommended for survey control.
 AB5651
 AB5651.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5651.See file dsdata.pdf to determine how the superseded data were derived.
 AB5651
 AB5651_MARKER: DD = SURVEY DISK
 AB5651_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5651_STAMPING: NO. GPS 045
 AB5651_MARK LOGO: MD0480
 AB5651_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5651_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5651+STABILITY: SURFACE MOTION
 AB5651_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5651+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2006
 AB5651
 AB5651  HISTORY     - Date     Condition        Report By
 AB5651  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5651  HISTORY     - 20000818 GOOD             MDSHA
 AB5651  HISTORY     - 20020222 GOOD             USPSQD
 AB5651  HISTORY     - 20041231 GOOD             USPSQD
 AB5651  HISTORY     - 20060516 GOOD             USPSQD
 AB5651
 AB5651                          STATION DESCRIPTION
 AB5651
 AB5651'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5651'THE STATION IS LOCATED ABOUT 0.75 MI (1.21 KM) SOUTHEAST OF THE CENTER
 AB5651'OF EASTON.
 AB5651'
 AB5651'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5651'SOUTH ON RT 50 FOR 0.55 MI (0.89 KM) TO THE INTERSECTION WITH IDLEWILD
 AB5651'AVE.  TURN RIGHT ON IDLEWILD AVE. AND GO WEST FOR 0.45 MI (0.72 KM) TO
 AB5651'THE STATION ON THE RIGHT.
 AB5651'
 AB5651'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5651'MONUMENT FLUSH WITH THE GROUND, 67.9 FT (20.7 M) EAST OF LIGHT POLE
 AB5651'NO. 25, 20.8 FT (6.3 M) NORTH OF THE CENTERLINE OF THE ROAD, 27.3 FT
 AB5651'(8.3 M) SOUTHWEST OF A MONITORING WELL, 36.9 FT (11.2 M) NORTHWEST OF
 AB5651'A MANHOLE AND 58.0 FT (17.7 M) WEST OF LIGHT POLE NO. 26.
 AB5651
 AB5651                          STATION RECOVERY (2000)
 AB5651
 AB5651'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5651'RECOVERED AS DESCRIBED.
 AB5651
 AB5651                          STATION RECOVERY (2002)
 AB5651
 AB5651'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5651'REFERENCED LIGHT POLES DESTROYED.  MARK NOW 68.1 FT E OF LIGHT POLE
 AB5651'S22SE, 58.2 FT W OF AN UNMARKED STEEL LIGHT POLE, 150.2 FT SW OF A
 AB5651'MONITORING WELL COVER.
 AB5651
 AB5651                          STATION RECOVERY (2004)
 AB5651
 AB5651'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLH)
 AB5651'THERE ARE NUMEROUS LIGHT POLES, MOST WITHOUT VISIBLE NUMBERS.  THERE
 AB5651'ARE NUMEROUS MANHOLES IN THE VICINITY.  HENCE THE SEARCH WAS TIME
 AB5651'CONSUMING.  IT WOULD BE VERY SIMPLE TO FIND THIS MARK IF THE NOTE
 AB5651'INDICATED TWO THINGS= MARK IS 3 FEET FROM THE NORTH CURB OF IDLEWILD
 AB5651'AVE., AND IT IS 141 FEET EAST OF THE EASTON WATER TANK.
 AB5651
 AB5651                          STATION RECOVERY (2006)
 AB5651
 AB5651'RECOVERY NOTE BY US POWER SQUADRON 2006
 AB5651'MARK IS 25 FEET EAST OF EAST END OF DRIVEWAY TO NEW SKATE PARK. 117
 AB5651'FEET EAST FROM EAST END OF FENCE AROUND WATER TOWER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5652 ***********************************************************************
 AB5652  DESIGNATION -  GPS 046
 AB5652  PID         -  AB5652
 AB5652  STATE/COUNTY-  MD/TALBOT
 AB5652  COUNTRY     -  US
 AB5652  USGS QUAD   -  EASTON (2016)
 AB5652
 AB5652                         *CURRENT SURVEY CONTROL
 AB5652  ______________________________________________________________________
 AB5652* NAD 83(2011) POSITION- 38 45 53.03073(N) 076 04 19.83452(W)   ADJUSTED
 AB5652* NAD 83(2011) ELLIP HT-   -24.727 (meters)        (06/27/12)   ADJUSTED
 AB5652* NAD 83(2011) EPOCH   -  2010.00
 AB5652* NAVD 88 ORTHO HEIGHT -     9.968 (meters)       32.70  (feet) ADJUSTED
 AB5652  ______________________________________________________________________
 AB5652  GEOID HEIGHT    -        -34.691 (meters)                     GEOID18
 AB5652  NAD 83(2011) X  -  1,198,611.555 (meters)                     COMP
 AB5652  NAD 83(2011) Y  - -4,833,298.212 (meters)                     COMP
 AB5652  NAD 83(2011) Z  -  3,971,970.353 (meters)                     COMP
 AB5652  LAPLACE CORR    -         -3.17  (seconds)                    DEFLEC18
 AB5652  DYNAMIC HEIGHT  -          9.962 (meters)       32.68  (feet) COMP
 AB5652  MODELED GRAVITY -    980,035.2   (mgal)                       NAVD 88
 AB5652
 AB5652  VERT ORDER      -  SECOND    CLASS I
 AB5652
 AB5652  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5652  Standards:
 AB5652         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5652            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5652  -------------------------------------------------------------------
 AB5652  NETWORK    0.60   1.59           0.27   0.21   0.81     -0.05105674
 AB5652  -------------------------------------------------------------------
 AB5652  Click here for local accuracies and other accuracy information.
 AB5652
 AB5652.The horizontal coordinates were established by GPS observations
 AB5652.and adjusted by the National Geodetic Survey in June 2012.
 AB5652
 AB5652.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5652.been affixed to the stable North American tectonic plate. See 
 AB5652.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5652
 AB5652.The horizontal coordinates are valid at the epoch date displayed above
 AB5652.which is a decimal equivalence of Year/Month/Day.
 AB5652
 AB5652.The orthometric height was determined by differential leveling and
 AB5652.adjusted by the NATIONAL GEODETIC SURVEY
 AB5652.in September 2004.
 AB5652
 AB5652.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5652.GEOID18 height accuracy estimate available here.
 AB5652
 AB5652.Click photographs - Photos may exist for this station.
 AB5652
 AB5652.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5652
 AB5652.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5652
 AB5652.The ellipsoidal height was determined by GPS observations
 AB5652.and is referenced to NAD 83.
 AB5652
 AB5652.The dynamic height is computed by dividing the NAVD 88
 AB5652.geopotential number by the normal gravity value computed on the
 AB5652.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5652.degrees latitude (g = 980.6199 gals.).
 AB5652
 AB5652.The modeled gravity was interpolated from observed gravity values.
 AB5652
 AB5652. The following values were computed from the NAD 83(2011) position.
 AB5652
 AB5652;                    North         East     Units Scale Factor Converg.
 AB5652;SPC MD       -   122,299.272   480,634.244   MT  0.99995172   +0 34 56.4
 AB5652;SPC MD       -   401,243.53  1,576,880.85   sFT  0.99995172   +0 34 56.4
 AB5652;UTM  18      - 4,291,214.766   406,850.516   MT  0.99970685   -0 40 16.9
 AB5652
 AB5652!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5652!SPC MD       -   1.00000388  x   0.99995172  =   0.99995560
 AB5652!UTM  18      -   1.00000388  x   0.99970685  =   0.99971073
 AB5652
 AB5652:                Primary Azimuth Mark                     Grid Az
 AB5652:SPC MD       -  GPS 030                                  229 16 33.6
 AB5652:UTM  18      -  GPS 030                                  230 31 46.9
 AB5652
 AB5652_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0685091214(NAD 83)
 AB5652
 AB5652|---------------------------------------------------------------------|
 AB5652| PID    Reference Object                     Distance      Geod. Az  |
 AB5652|                                                           dddmmss.s |
 AB5652| AB5651 GPS 045                             226.516 METERS 08901     |
 AB5652| AB5636 GPS 030                             APPROX. 0.7 KM 2295130.0 |
 AB5652| AB5637 GPS 031                             APPROX. 0.9 KM 2704034.7 |
 AB5652|---------------------------------------------------------------------|
 AB5652
 AB5652                          SUPERSEDED SURVEY CONTROL
 AB5652
 AB5652  NAD 83(2007)-  38 45 53.03096(N)    076 04 19.83519(W) AD(2002.00) 0
 AB5652  ELLIP H (02/10/07)  -24.693  (m)                       GP(2002.00)    
 AB5652  ELLIP H (08/30/02)  -24.671  (m)                       GP(       ) 4 2
 AB5652  NAD 83(1991)-  38 45 53.03158(N)    076 04 19.83582(W) AD(       ) 1
 AB5652  ELLIP H (08/02/96)  -24.618  (m)                       GP(       ) 3 1
 AB5652  NAVD 88 (08/02/96)   10.0    (m)  GEOID93  model used  GPS OBS        
 AB5652
 AB5652.Superseded values are not recommended for survey control.
 AB5652
 AB5652.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5652.See file dsdata.pdf to determine how the superseded data were derived.
 AB5652
 AB5652_MARKER: DD = SURVEY DISK
 AB5652_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5652_STAMPING: NO. GPS 046
 AB5652_MARK LOGO: MD0480
 AB5652_PROJECTION: FLUSH
 AB5652_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5652_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5652+STABILITY: SURFACE MOTION
 AB5652_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5652+SATELLITE: SATELLITE OBSERVATIONS - May 16, 2006
 AB5652
 AB5652  HISTORY     - Date     Condition        Report By
 AB5652  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5652  HISTORY     - 20000818 GOOD             MDSHA
 AB5652  HISTORY     - 20020312 GOOD             USPSQD
 AB5652  HISTORY     - 20050314 GOOD             USPSQD
 AB5652  HISTORY     - 20060516 GOOD             USPSQD
 AB5652
 AB5652                          STATION DESCRIPTION
 AB5652
 AB5652'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5652'THE STATION IS LOCATED ABOUT 0.75 MI (1.21 KM) SOUTH OF THE CENTER OF
 AB5652'EASTON AT THE IDLEWILD PARK.
 AB5652'
 AB5652'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 331 (DOVER ROAD), GO
 AB5652'SOUTH ON RT 50 FOR 0.55 MI (0.89 KM) TO THE INTERSECTION WITH IDLEWILD
 AB5652'AVE.  TURN RIGHT AND GO WEST ON IDLEWILD AVE FOR 0.6 MI (1.0 KM) TO
 AB5652'THE IDLEWILD PARK AND THE STATION ON THE LEFT.
 AB5652'
 AB5652'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5652'MONUMENT FLUSH WITH THE GROUND, 38.2 FT (11.6 M) SOUTH OF THE
 AB5652'CENTERLINE OF THE ROAD, 132.6 FT (40.4 M) WEST OF THE NORTHWEST
 AB5652'CORNER OF THE TENNIS COURT, 97.2 FT (29.6 M) NORTHEAST OF THE
 AB5652'NORTHEAST CORNER OF THE BASKETBALL COURT AND 65.2 FT (19.9 M)
 AB5652'SOUTHEAST OF LIGHT POLE NO. 15.
 AB5652
 AB5652                          STATION RECOVERY (2000)
 AB5652
 AB5652'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5652'RECOVERED AS DESCRIBED.
 AB5652
 AB5652                          STATION RECOVERY (2002)
 AB5652
 AB5652'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5652'RECOVERED IN GOOD CONDITION.
 AB5652
 AB5652                          STATION RECOVERY (2005)
 AB5652
 AB5652'RECOVERY NOTE BY US POWER SQUADRON 2005 (AEM)
 AB5652'LIGHT POLE NUMBER 15 NOW IDENTIFIED AS  S20SWSL1.  DISK INSCRIBED
 AB5652''TOWN OF EASTON SURVEY MARKER' NO DATE, 'GPS CONTROL POINT'
 AB5652
 AB5652                          STATION RECOVERY (2006)
 AB5652
 AB5652'RECOVERY NOTE BY US POWER SQUADRON 2006
 AB5652'THE MARK IS 17 FEET NE OF THE PLAQUE TO VICTIMS OF CRIME IN TALBOT
 AB5652'COUNTY, 1990.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5653 ***********************************************************************
 AB5653  DESIGNATION -  GPS 047
 AB5653  PID         -  AB5653
 AB5653  STATE/COUNTY-  MD/TALBOT
 AB5653  COUNTRY     -  US
 AB5653  USGS QUAD   -  EASTON (2016)
 AB5653
 AB5653                         *CURRENT SURVEY CONTROL
 AB5653  ______________________________________________________________________
 AB5653* NAD 83(2011) POSITION- 38 49 23.45368(N) 076 02 23.75034(W)   ADJUSTED
 AB5653* NAD 83(2011) ELLIP HT-   -15.748 (meters)        (06/27/12)   ADJUSTED
 AB5653* NAD 83(2011) EPOCH   -  2010.00
 AB5653* NAVD 88 ORTHO HEIGHT -    18.883 (meters)       61.95  (feet) ADJUSTED
 AB5653  ______________________________________________________________________
 AB5653  GEOID HEIGHT    -        -34.625 (meters)                     GEOID18
 AB5653  NAD 83(2011) X  -  1,200,352.457 (meters)                     COMP
 AB5653  NAD 83(2011) Y  - -4,828,684.434 (meters)                     COMP
 AB5653  NAD 83(2011) Z  -  3,977,033.294 (meters)                     COMP
 AB5653  LAPLACE CORR    -         -3.29  (seconds)                    DEFLEC18
 AB5653  DYNAMIC HEIGHT  -         18.871 (meters)       61.91  (feet) COMP
 AB5653  MODELED GRAVITY -    980,041.0   (mgal)                       NAVD 88
 AB5653
 AB5653  VERT ORDER      -  SECOND    CLASS I
 AB5653
 AB5653  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5653  Standards:
 AB5653         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5653            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5653  -------------------------------------------------------------------
 AB5653  NETWORK    0.53   1.08           0.24   0.19   0.55     -0.09649855
 AB5653  -------------------------------------------------------------------
 AB5653  Click here for local accuracies and other accuracy information.
 AB5653
 AB5653.The horizontal coordinates were established by GPS observations
 AB5653.and adjusted by the National Geodetic Survey in June 2012.
 AB5653
 AB5653.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5653.been affixed to the stable North American tectonic plate. See 
 AB5653.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5653
 AB5653.The horizontal coordinates are valid at the epoch date displayed above
 AB5653.which is a decimal equivalence of Year/Month/Day.
 AB5653
 AB5653.The orthometric height was determined by differential leveling and
 AB5653.adjusted by the NATIONAL GEODETIC SURVEY
 AB5653.in September 2004.
 AB5653
 AB5653.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5653.GEOID18 height accuracy estimate available here.
 AB5653
 AB5653.Click photographs - Photos may exist for this station.
 AB5653
 AB5653.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5653
 AB5653.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5653
 AB5653.The ellipsoidal height was determined by GPS observations
 AB5653.and is referenced to NAD 83.
 AB5653
 AB5653.The dynamic height is computed by dividing the NAVD 88
 AB5653.geopotential number by the normal gravity value computed on the
 AB5653.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5653.degrees latitude (g = 980.6199 gals.).
 AB5653
 AB5653.The modeled gravity was interpolated from observed gravity values.
 AB5653
 AB5653. The following values were computed from the NAD 83(2011) position.
 AB5653
 AB5653;                    North         East     Units Scale Factor Converg.
 AB5653;SPC MD       -   128,816.288   483,368.271   MT  0.99995027   +0 36 09.3
 AB5653;SPC MD       -   422,624.77  1,585,850.74   sFT  0.99995027   +0 36 09.3
 AB5653;UTM  18      - 4,297,668.784   409,725.815   MT  0.99970035   -0 39 07.2
 AB5653
 AB5653!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5653!SPC MD       -   1.00000247  x   0.99995027  =   0.99995274
 AB5653!UTM  18      -   1.00000247  x   0.99970035  =   0.99970282
 AB5653
 AB5653:                Primary Azimuth Mark                     Grid Az
 AB5653:SPC MD       -  GPS 014                                  136 00 11.0
 AB5653:UTM  18      -  GPS 014                                  137 15 27.5
 AB5653
 AB5653_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0972597668(NAD 83)
 AB5653
 AB5653|---------------------------------------------------------------------|
 AB5653| PID    Reference Object                     Distance      Geod. Az  |
 AB5653|                                                           dddmmss.s |
 AB5653| AB5620 GPS 014                             APPROX. 1.6 KM 1363620.3 |
 AB5653| AB5619 GPS 013                             APPROX. 1.5 KM 1450549.8 |
 AB5653|---------------------------------------------------------------------|
 AB5653
 AB5653                          SUPERSEDED SURVEY CONTROL
 AB5653
 AB5653  NAD 83(2007)-  38 49 23.45393(N)    076 02 23.75106(W) AD(2002.00) 0
 AB5653  ELLIP H (02/10/07)  -15.716  (m)                       GP(2002.00)    
 AB5653  ELLIP H (08/30/02)  -15.723  (m)                       GP(       ) 4 2
 AB5653  NAD 83(1991)-  38 49 23.45432(N)    076 02 23.75138(W) AD(       ) 1
 AB5653  ELLIP H (08/02/96)  -15.672  (m)                       GP(       ) 3 1
 AB5653  NAVD 88 (08/02/96)   18.9    (m)  GEOID93  model used  GPS OBS        
 AB5653
 AB5653.Superseded values are not recommended for survey control.
 AB5653
 AB5653.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5653.See file dsdata.pdf to determine how the superseded data were derived.
 AB5653
 AB5653_MARKER: DD = SURVEY DISK
 AB5653_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5653_STAMPING: NO.GPS 047
 AB5653_MARK LOGO: MD0480
 AB5653_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5653_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5653+STABILITY: SURFACE MOTION
 AB5653_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5653+SATELLITE: SATELLITE OBSERVATIONS - March 10, 2002
 AB5653
 AB5653  HISTORY     - Date     Condition        Report By
 AB5653  HISTORY     - 1995     MONUMENTED       EASTUT
 AB5653  HISTORY     - 20011012 GOOD             MDSHA
 AB5653  HISTORY     - 20020310 GOOD             USPSQD
 AB5653
 AB5653                          STATION DESCRIPTION
 AB5653
 AB5653'DESCRIBED BY EASTON UTILITIES 1995 (BKS)
 AB5653'THE STATION IS LOCATED ABOUT 3.9 MI (6.3 KM) NORTHEAST OF THE CENTER
 AB5653'OF EASTON.
 AB5653'
 AB5653'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 309 (CORDOVA ROAD), GO
 AB5653'NORTHEAST ON RT 309 FOR 1.35 MI (2.17 KM) TO THE INTERSECTION WITH OLD
 AB5653'CORDOVA ROAD ON THE LEFT, KLONDIKE ROAD AND THE STATION ON THE RIGHT.
 AB5653'
 AB5653'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5653'MONUMENT FLUSH WITH THE GROUND, 68.1 FT (20.8 M) SOUTHEAST OF POWER
 AB5653'POLE NO. 333-48, 28.0 FT (8.5 M) SOUTHEAST OF THE CENTERLINE OF RT 309
 AB5653'AND 26.2 FT (8.0 M) NORTHEAST OF THE CENTERLINE OF KLONDIKE ROAD.
 AB5653
 AB5653                          STATION RECOVERY (2001)
 AB5653
 AB5653'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AB5653'RECOVERED AS DESCRIBED.
 AB5653
 AB5653                          STATION RECOVERY (2002)
 AB5653
 AB5653'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5653'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5654 ***********************************************************************
 AB5654  DESIGNATION -  GPS 048
 AB5654  PID         -  AB5654
 AB5654  STATE/COUNTY-  MD/TALBOT
 AB5654  COUNTRY     -  US
 AB5654  USGS QUAD   -  EASTON (2016)
 AB5654
 AB5654                         *CURRENT SURVEY CONTROL
 AB5654  ______________________________________________________________________
 AB5654* NAD 83(2011) POSITION- 38 49 58.29354(N) 076 03 38.20073(W)   ADJUSTED
 AB5654* NAD 83(2011) ELLIP HT-   -16.914 (meters)        (06/27/12)   ADJUSTED
 AB5654* NAD 83(2011) EPOCH   -  2010.00
 AB5654* NAVD 88 ORTHO HEIGHT -    17.676 (meters)       57.99  (feet) ADJUSTED
 AB5654  ______________________________________________________________________
 AB5654  GEOID HEIGHT    -        -34.567 (meters)                     GEOID18
 AB5654  NAD 83(2011) X  -  1,198,447.001 (meters)                     COMP
 AB5654  NAD 83(2011) Y  - -4,828,462.739 (meters)                     COMP
 AB5654  NAD 83(2011) Z  -  3,977,869.511 (meters)                     COMP
 AB5654  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 AB5654  DYNAMIC HEIGHT  -         17.666 (meters)       57.96  (feet) COMP
 AB5654  MODELED GRAVITY -    980,042.9   (mgal)                       NAVD 88
 AB5654
 AB5654  VERT ORDER      -  SECOND    CLASS I
 AB5654
 AB5654  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5654  Standards:
 AB5654         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5654            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5654  -------------------------------------------------------------------
 AB5654  NETWORK    0.48   0.90           0.20   0.19   0.46     -0.14472845
 AB5654  -------------------------------------------------------------------
 AB5654  Click here for local accuracies and other accuracy information.
 AB5654
 AB5654.The horizontal coordinates were established by GPS observations
 AB5654.and adjusted by the National Geodetic Survey in June 2012.
 AB5654
 AB5654.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5654.been affixed to the stable North American tectonic plate. See 
 AB5654.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5654
 AB5654.The horizontal coordinates are valid at the epoch date displayed above
 AB5654.which is a decimal equivalence of Year/Month/Day.
 AB5654
 AB5654.The orthometric height was determined by differential leveling and
 AB5654.adjusted by the NATIONAL GEODETIC SURVEY
 AB5654.in September 2004.
 AB5654
 AB5654.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5654.GEOID18 height accuracy estimate available here.
 AB5654
 AB5654.Click photographs - Photos may exist for this station.
 AB5654
 AB5654.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5654
 AB5654.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5654
 AB5654.The ellipsoidal height was determined by GPS observations
 AB5654.and is referenced to NAD 83.
 AB5654
 AB5654.The dynamic height is computed by dividing the NAVD 88
 AB5654.geopotential number by the normal gravity value computed on the
 AB5654.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5654.degrees latitude (g = 980.6199 gals.).
 AB5654
 AB5654.The modeled gravity was interpolated from observed gravity values.
 AB5654
 AB5654. The following values were computed from the NAD 83(2011) position.
 AB5654
 AB5654;                    North         East     Units Scale Factor Converg.
 AB5654;SPC MD       -   129,871.841   481,561.461   MT  0.99995013   +0 35 22.5
 AB5654;SPC MD       -   426,087.87  1,579,922.89   sFT  0.99995013   +0 35 22.5
 AB5654;UTM  18      - 4,298,763.375   407,942.992   MT  0.99970435   -0 39 54.4
 AB5654
 AB5654!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5654!SPC MD       -   1.00000265  x   0.99995013  =   0.99995278
 AB5654!UTM  18      -   1.00000265  x   0.99970435  =   0.99970700
 AB5654
 AB5654:                Primary Azimuth Mark                     Grid Az
 AB5654:SPC MD       -  GPS 002                                  253 15 51.6
 AB5654:UTM  18      -  GPS 002                                  254 31 08.5
 AB5654
 AB5654_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0794298763(NAD 83)
 AB5654
 AB5654|---------------------------------------------------------------------|
 AB5654| PID    Reference Object                     Distance      Geod. Az  |
 AB5654|                                                           dddmmss.s |
 AB5654| AB5608 GPS 002                             APPROX. 1.0 KM 2535114.1 |
 AB5654|---------------------------------------------------------------------|
 AB5654
 AB5654                          SUPERSEDED SURVEY CONTROL
 AB5654
 AB5654  NAD 83(2007)-  38 49 58.29379(N)    076 03 38.20146(W) AD(2002.00) 0
 AB5654  ELLIP H (02/10/07)  -16.881  (m)                       GP(2002.00)    
 AB5654  ELLIP H (08/30/02)  -16.881  (m)                       GP(       ) 4 2
 AB5654  NAD 83(1991)-  38 49 58.29419(N)    076 03 38.20210(W) AD(       ) 1
 AB5654  ELLIP H (08/02/96)  -16.847  (m)                       GP(       ) 3 1
 AB5654  NAVD 88 (08/02/96)   17.7    (m)  GEOID93  model used  GPS OBS        
 AB5654
 AB5654.Superseded values are not recommended for survey control.
 AB5654
 AB5654.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5654.See file dsdata.pdf to determine how the superseded data were derived.
 AB5654
 AB5654_MARKER: DD = SURVEY DISK
 AB5654_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5654_STAMPING: NO. GPS 048
 AB5654_MARK LOGO: MD0480
 AB5654_PROJECTION: RECESSED 3 CENTIMETERS
 AB5654_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5654_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5654+STABILITY: SURFACE MOTION
 AB5654_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5654+SATELLITE: SATELLITE OBSERVATIONS - April 10, 2012
 AB5654
 AB5654  HISTORY     - Date     Condition        Report By
 AB5654  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5654  HISTORY     - 19991007 GOOD             MDSHA
 AB5654  HISTORY     - 20020310 GOOD             USPSQD
 AB5654  HISTORY     - 20120410 GOOD             NGS
 AB5654
 AB5654                          STATION DESCRIPTION
 AB5654
 AB5654'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5654'THE STATION IS LOCATED ABOUT 3.8 MI (6.1 KM) NORTH OF THE CENTER OF
 AB5654'EASTON.
 AB5654'
 AB5654'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 309 (CORDOVA ROAD), GO
 AB5654'NORTH ON RT 50 FOR 1.55 MI (2.49 KM) TO THE STATION ON THE LEFT NEAR A
 AB5654'POWER LINE CROSSING.
 AB5654'
 AB5654'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5654'MONUMENT FLUSH WITH THE GROUND, 37.1 FT (11.3 M) WEST OF THE
 AB5654'CENTERLINE OF THE EASTBOUND LANE OF RT 50, 222.8 FT (67.9 M) NORTH OF
 AB5654'AN UNNUMBERED POWER POLE AND 95.0 FT (29.0 M) SOUTH OF POWER POLE
 AB5654'NO. 334-19.
 AB5654
 AB5654                          STATION RECOVERY (1999)
 AB5654
 AB5654'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AB5654'RECOVERED AS DESCRIBED.
 AB5654
 AB5654                          STATION RECOVERY (2002)
 AB5654
 AB5654'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5654'REMAINS OF A SHREDDED CARSONITE POST WERE FOUND IN THE VICINITY.
 AB5654
 AB5654                          STATION RECOVERY (2012)
 AB5654
 AB5654'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2012 (MRA)
 AB5654'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5656 ***********************************************************************
 AB5656  DESIGNATION -  GPS 050
 AB5656  PID         -  AB5656
 AB5656  STATE/COUNTY-  MD/TALBOT
 AB5656  COUNTRY     -  US
 AB5656  USGS QUAD   -  EASTON (2016)
 AB5656
 AB5656                         *CURRENT SURVEY CONTROL
 AB5656  ______________________________________________________________________
 AB5656* NAD 83(2011) POSITION- 38 46 43.48585(N) 076 04 38.30833(W)   ADJUSTED
 AB5656* NAD 83(2011) ELLIP HT-   -31.773 (meters)        (06/27/12)   ADJUSTED
 AB5656* NAD 83(2011) EPOCH   -  2010.00
 AB5656* NAVD 88 ORTHO HEIGHT -     2.860 (meters)        9.38  (feet) ADJUSTED
 AB5656  ______________________________________________________________________
 AB5656  GEOID HEIGHT    -        -34.656 (meters)                     GEOID18
 AB5656  NAD 83(2011) X  -  1,197,942.912 (meters)                     COMP
 AB5656  NAD 83(2011) Y  - -4,832,454.534 (meters)                     COMP
 AB5656  NAD 83(2011) Z  -  3,973,178.953 (meters)                     COMP
 AB5656  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 AB5656  DYNAMIC HEIGHT  -          2.858 (meters)        9.38  (feet) COMP
 AB5656  MODELED GRAVITY -    980,036.9   (mgal)                       NAVD 88
 AB5656
 AB5656  VERT ORDER      -  SECOND    CLASS I
 AB5656
 AB5656  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5656  Standards:
 AB5656         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5656            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5656  -------------------------------------------------------------------
 AB5656  NETWORK    0.38   0.84           0.16   0.15   0.43     -0.08122035
 AB5656  -------------------------------------------------------------------
 AB5656  Click here for local accuracies and other accuracy information.
 AB5656
 AB5656.The horizontal coordinates were established by GPS observations
 AB5656.and adjusted by the National Geodetic Survey in June 2012.
 AB5656
 AB5656.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5656.been affixed to the stable North American tectonic plate. See 
 AB5656.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5656
 AB5656.The horizontal coordinates are valid at the epoch date displayed above
 AB5656.which is a decimal equivalence of Year/Month/Day.
 AB5656
 AB5656.The orthometric height was determined by differential leveling and
 AB5656.adjusted by the NATIONAL GEODETIC SURVEY
 AB5656.in September 2004.
 AB5656
 AB5656.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5656.GEOID18 height accuracy estimate available here.
 AB5656
 AB5656.Click photographs - Photos may exist for this station.
 AB5656
 AB5656.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5656
 AB5656.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5656
 AB5656.The ellipsoidal height was determined by GPS observations
 AB5656.and is referenced to NAD 83.
 AB5656
 AB5656.The dynamic height is computed by dividing the NAVD 88
 AB5656.geopotential number by the normal gravity value computed on the
 AB5656.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5656.degrees latitude (g = 980.6199 gals.).
 AB5656
 AB5656.The modeled gravity was interpolated from observed gravity values.
 AB5656
 AB5656. The following values were computed from the NAD 83(2011) position.
 AB5656
 AB5656;                    North         East     Units Scale Factor Converg.
 AB5656;SPC MD       -   123,850.452   480,172.562   MT  0.99995128   +0 34 44.8
 AB5656;SPC MD       -   406,332.69  1,575,366.15   sFT  0.99995128   +0 34 44.8
 AB5656;UTM  18      - 4,292,775.296   406,422.991   MT  0.99970783   -0 40 29.2
 AB5656
 AB5656!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5656!SPC MD       -   1.00000499  x   0.99995128  =   0.99995626
 AB5656!UTM  18      -   1.00000499  x   0.99970783  =   0.99971281
 AB5656
 AB5656:                Primary Azimuth Mark                     Grid Az
 AB5656:SPC MD       -  GPS 036                                  300 24 52.7
 AB5656:UTM  18      -  GPS 036                                  301 40 06.7
 AB5656
 AB5656_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0642292775(NAD 83)
 AB5656
 AB5656|---------------------------------------------------------------------|
 AB5656| PID    Reference Object                     Distance      Geod. Az  |
 AB5656|                                                           dddmmss.s |
 AB5656| AB5642 GPS 036                             APPROX. 0.6 KM 3005937.5 |
 AB5656|---------------------------------------------------------------------|
 AB5656
 AB5656                          SUPERSEDED SURVEY CONTROL
 AB5656
 AB5656  NAD 83(2007)-  38 46 43.48607(N)    076 04 38.30900(W) AD(2002.00) 0
 AB5656  ELLIP H (02/10/07)  -31.741  (m)                       GP(2002.00)    
 AB5656  ELLIP H (08/30/02)  -31.733  (m)                       GP(       ) 4 2
 AB5656  NAD 83(1991)-  38 46 43.48674(N)    076 04 38.30958(W) AD(       ) 1
 AB5656  ELLIP H (08/02/96)  -31.678  (m)                       GP(       ) 3 1
 AB5656  NAVD 88 (08/02/96)    2.9    (m)  GEOID93  model used  GPS OBS        
 AB5656
 AB5656.Superseded values are not recommended for survey control.
 AB5656
 AB5656.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5656.See file dsdata.pdf to determine how the superseded data were derived.
 AB5656
 AB5656_MARKER: DD = SURVEY DISK
 AB5656_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5656_STAMPING: NO. GPS 050
 AB5656_MARK LOGO: MD0480
 AB5656_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5656_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5656+STABILITY: SURFACE MOTION
 AB5656_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5656+SATELLITE: SATELLITE OBSERVATIONS - January 02, 2007
 AB5656
 AB5656  HISTORY     - Date     Condition        Report By
 AB5656  HISTORY     - 1996     MONUMENTED       EASTUT
 AB5656  HISTORY     - 20000726 GOOD             MDSHA
 AB5656  HISTORY     - 20020312 GOOD             USPSQD
 AB5656  HISTORY     - 20051109 GOOD             USPSQD
 AB5656  HISTORY     - 20070102 GOOD             USPSQD
 AB5656
 AB5656                          STATION DESCRIPTION
 AB5656
 AB5656'DESCRIBED BY EASTON UTILITIES 1996 (BKS)
 AB5656'THE STATION IS LOCATED IN THE CENTER OF EASTON ON THE GROUNDS OF THE
 AB5656'EASTON UTILITIES COMMISSION.
 AB5656'
 AB5656'TO REACH FROM THE INTERSECTION OF RT 33 (BAY STREET) AND RT 565
 AB5656'(WASHINGTON STREET), GO NORTH ON WASHINGTON STREET FOR 0.15 MI
 AB5656'(0.24 KM) TO THE ENTRANCE TO THE EASTON UTILITIES BUILDING. TURN LEFT
 AB5656'ON THE SOUTH SIDE OF THE BRICK BUILDING AND PROCEED THROUGH THE
 AB5656'PARKING LOT FOR 0.1 MI (0.2 KM) TO A CONCRETE BRIDGE OVER A SMALL
 AB5656'STREAM AND THE STATION ON THE LEFT.
 AB5656'
 AB5656'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5656'MONUMENT FLUSH WITH THE GROUND, 23.5 FT (7.2 M) NORTHEAST OF A 6 FT
 AB5656'(1.8 M) HIGH CHAIN LINK FENCE, 18.75 FT (5.72 M) NORTH OF A SEWER
 AB5656'MANHOLE, 23.2 FT (7.1 M) SOUTHWEST OF THE CENTERLINE OF A PAVED
 AB5656'ENTRANCE AND 15.6 FT (4.8 M) NORTHWEST OF THE NORTHWEST END OF THE
 AB5656'WINGWALL OF THE BRIDGE.
 AB5656
 AB5656                          STATION RECOVERY (2000)
 AB5656
 AB5656'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5656'RECOVERED AS DESCRIBED.
 AB5656
 AB5656                          STATION RECOVERY (2002)
 AB5656
 AB5656'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5656'REFERENCED PARKING LOT HAS BEEN ENLARGED. THE ENTRANCE IS AT 201 N.
 AB5656'WASHINGTON STREET, PROCEED 250 FEET TO A STOP SIGN, BEAR RIGHT TO A
 AB5656'GALVANIZED FENCE GATE AND THE BRIDGE OVER THE STREAM.
 AB5656
 AB5656                          STATION RECOVERY (2005)
 AB5656
 AB5656'RECOVERY NOTE BY US POWER SQUADRON 2005 (AEM)
 AB5656'RECOVERED IN GOOD CONDITION.
 AB5656
 AB5656                          STATION RECOVERY (2007)
 AB5656
 AB5656'RECOVERY NOTE BY US POWER SQUADRON 2007 (NNH)
 AB5656'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DH8691 ***********************************************************************
 DH8691  DESIGNATION -  GPS 051
 DH8691  PID         -  DH8691
 DH8691  STATE/COUNTY-  MD/TALBOT
 DH8691  COUNTRY     -  US
 DH8691  USGS QUAD   -  EASTON (2016)
 DH8691
 DH8691                         *CURRENT SURVEY CONTROL
 DH8691  ______________________________________________________________________
 DH8691* NAD 83(2011) POSITION- 38 47 15.43488(N) 076 04 38.93946(W)   ADJUSTED
 DH8691* NAD 83(2011) ELLIP HT-   -27.325 (meters)        (06/27/12)   ADJUSTED
 DH8691* NAD 83(2011) EPOCH   -  2010.00
 DH8691* NAVD 88 ORTHO HEIGHT -     7.32  (meters)       24.0   (feet) LEVELING
 DH8691  ______________________________________________________________________
 DH8691  GEOID HEIGHT    -        -34.638 (meters)                     GEOID18
 DH8691  NAD 83(2011) X  -  1,197,780.480 (meters)                     COMP
 DH8691  NAD 83(2011) Y  - -4,831,862.595 (meters)                     COMP
 DH8691  NAD 83(2011) Z  -  3,973,949.718 (meters)                     COMP
 DH8691  LAPLACE CORR    -         -3.21  (seconds)                    DEFLEC18
 DH8691  VERT ORDER      -  THIRD ?
 DH8691
 DH8691  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DH8691  Standards:
 DH8691         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DH8691            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DH8691  -------------------------------------------------------------------
 DH8691  NETWORK    0.27   0.41           0.12   0.10   0.21     -0.13937491
 DH8691  -------------------------------------------------------------------
 DH8691  Click here for local accuracies and other accuracy information.
 DH8691
 DH8691.The horizontal coordinates were established by GPS observations
 DH8691.and adjusted by the National Geodetic Survey in June 2012.
 DH8691
 DH8691.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DH8691.been affixed to the stable North American tectonic plate. See 
 DH8691.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DH8691
 DH8691.The horizontal coordinates are valid at the epoch date displayed above
 DH8691.which is a decimal equivalence of Year/Month/Day.
 DH8691
 DH8691.The orthometric height was determined by differential leveling.
 DH8691.The vertical network tie was performed by a horz. field party for horz.
 DH8691.obs reductions. Reset procedures were used to establish the elevation.
 DH8691
 DH8691.Significant digits in the geoid height do not necessarily reflect accuracy.
 DH8691.GEOID18 height accuracy estimate available here.
 DH8691
 DH8691.Click photographs - Photos may exist for this station.
 DH8691
 DH8691.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DH8691
 DH8691.The Laplace correction was computed from DEFLEC18 derived deflections.
 DH8691
 DH8691.The ellipsoidal height was determined by GPS observations
 DH8691.and is referenced to NAD 83.
 DH8691
 DH8691. The following values were computed from the NAD 83(2011) position.
 DH8691
 DH8691;                    North         East     Units Scale Factor Converg.
 DH8691;SPC MD       -   124,835.395   480,147.375   MT  0.99995103   +0 34 44.4
 DH8691;SPC MD       -   409,564.13  1,575,283.51   sFT  0.99995103   +0 34 44.4
 DH8691;UTM  18      - 4,293,760.315   406,419.365   MT  0.99970784   -0 40 30.1
 DH8691
 DH8691!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DH8691!SPC MD       -   1.00000429  x   0.99995103  =   0.99995532
 DH8691!UTM  18      -   1.00000429  x   0.99970784  =   0.99971213
 DH8691
 DH8691:                Primary Azimuth Mark                     Grid Az
 DH8691:SPC MD       -  GPS 009                                  329 09 50.6
 DH8691:UTM  18      -  GPS 009                                  330 25 05.1
 DH8691
 DH8691_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0641993760(NAD 83)
 DH8691
 DH8691|---------------------------------------------------------------------|
 DH8691| PID    Reference Object                     Distance      Geod. Az  |
 DH8691|                                                           dddmmss.s |
 DH8691| AB5657 IRELAND                              86.571 METERS 11716     |
 DH8691| AB5615 GPS 009                             APPROX. 1.2 KM 3294435.0 |
 DH8691|---------------------------------------------------------------------|
 DH8691
 DH8691                          SUPERSEDED SURVEY CONTROL
 DH8691
 DH8691  NAD 83(2007)-  38 47 15.43507(N)    076 04 38.94021(W) AD(2002.00) 1
 DH8691  ELLIP H (04/15/09)  -27.293  (m)                       GP(2002.00) 3 1
 DH8691  NAD 83(1991)-  38 47 15.43561(N)    076 04 38.94086(W) AD(       ) 1
 DH8691  ELLIP H (03/06/06)  -27.273  (m)                       GP(       ) 3 1
 DH8691
 DH8691.Superseded values are not recommended for survey control.
 DH8691
 DH8691.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DH8691.See file dsdata.pdf to determine how the superseded data were derived.
 DH8691
 DH8691_MARKER: DD = SURVEY DISK
 DH8691_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DH8691_STAMPING: GPS 051
 DH8691_MARK LOGO: MD0480
 DH8691_PROJECTION: FLUSH
 DH8691_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DH8691_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DH8691+STABILITY: SURFACE MOTION
 DH8691_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DH8691+SATELLITE: SATELLITE OBSERVATIONS - July 21, 2017
 DH8691
 DH8691  HISTORY     - Date     Condition        Report By
 DH8691  HISTORY     - 20060106 MONUMENTED       GEOMET
 DH8691  HISTORY     - 20070102 GOOD             USPSQD
 DH8691  HISTORY     - 20080825 GOOD             GEOMET
 DH8691  HISTORY     - 20170721 GOOD             BASE9
 DH8691
 DH8691                          STATION DESCRIPTION
 DH8691
 DH8691'DESCRIBED BY GEOMETRICS GPS INCORPORATED 2006
 DH8691'THE STATION IS LOCATED ABOUT 1.6 KM (1.0 MILE) NORTH OF THE CENTER OF
 DH8691'EASTON.
 DH8691'
 DH8691'TO REACH THE STATION FROM THE INTERSECTION OF US HIGHWAY 50 AND ROUTE
 DH8691'322 (EASTON PARKWAY), GO SOUTHWEST ON ROUTE 322 FOR 1.9 KM (1.2 MILES)
 DH8691'TO ITS INTERSECTION WITH GLEBE ROAD AND THE STATION ON THE LEFT IN THE
 DH8691'SOUTH CORNER OF THE INTERSECTION.
 DH8691'
 DH8691'THE STATION IS 19.0 METERS (62.2 FEET) WEST FROM A FIRE HYDRANT, 15.5
 DH8691'METERS (50.8 FEET) SOUTH FROM A STREET SIGN, 8.0 METERS (26.4 FEET)
 DH8691'NORTHEAST FROM A LIGHT POLE, AND 0.3 METER (1.0 FOOT) NORTH FROM A
 DH8691'WITNESS POST.  THE STATION IS A STANDARD TOWN OF EASTON, MD BRASS
 DH8691'SURVEY DISK SET INTO A POURED IN PLACE CONCRETE MONUMENT 10 INCHES IN
 DH8691'DIAMETER, FLUSH WITH THE GROUND SURFACE AND STAMPED GPS 051.
 DH8691
 DH8691                          STATION RECOVERY (2007)
 DH8691
 DH8691'RECOVERY NOTE BY US POWER SQUADRON 2007 (NNH)
 DH8691'RECOVERED IN GOOD CONDITION.
 DH8691
 DH8691                          STATION RECOVERY (2008)
 DH8691
 DH8691'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2008 (KRO)
 DH8691'RECOVERED IN GOOD CONDITION.
 DH8691
 DH8691                          STATION RECOVERY (2017)
 DH8691
 DH8691'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 DH8691'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9241 ***********************************************************************
 DP9241  DESIGNATION -  GPS 1
 DP9241  PID         -  DP9241
 DP9241  STATE/COUNTY-  MD/WORCESTER
 DP9241  COUNTRY     -  US
 DP9241  USGS QUAD   -  OCEAN CITY (2016)
 DP9241
 DP9241                         *CURRENT SURVEY CONTROL
 DP9241  ______________________________________________________________________
 DP9241* NAD 83(2011) POSITION- 38 19 00.21892(N) 075 06 06.36353(W)   ADJUSTED
 DP9241* NAD 83(2011) ELLIP HT-   -34.785 (meters)        (06/05/19)   ADJUSTED
 DP9241* NAD 83(2011) EPOCH   -  2010.00
 DP9241* NAVD 88 ORTHO HEIGHT -     1.324 (meters)        4.34  (feet) ADJUSTED
 DP9241  ______________________________________________________________________
 DP9241  GEOID HEIGHT    -        -36.075 (meters)                     GEOID18
 DP9241  NAD 83(2011) X  -  1,288,261.016 (meters)                     COMP
 DP9241  NAD 83(2011) Y  - -4,842,242.018 (meters)                     COMP
 DP9241  NAD 83(2011) Z  -  3,933,066.201 (meters)                     COMP
 DP9241  LAPLACE CORR    -         -0.53  (seconds)                    DEFLEC18
 DP9241  DYNAMIC HEIGHT  -          1.323 (meters)        4.34  (feet) COMP
 DP9241  MODELED GRAVITY -    980,006.3   (mgal)                       NAVD 88
 DP9241
 DP9241  VERT ORDER      -  SECOND    CLASS II
 DP9241
 DP9241  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9241  Standards:
 DP9241         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9241            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9241  -------------------------------------------------------------------
 DP9241  NETWORK    1.01   0.84           0.49   0.28   0.43      0.00071582
 DP9241  -------------------------------------------------------------------
 DP9241  Click here for local accuracies and other accuracy information.
 DP9241
 DP9241.The horizontal coordinates were established by GPS observations
 DP9241.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9241
 DP9241.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9241.been affixed to the stable North American tectonic plate. See 
 DP9241.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9241
 DP9241.The horizontal coordinates are valid at the epoch date displayed above
 DP9241.which is a decimal equivalence of Year/Month/Day.
 DP9241
 DP9241.The orthometric height was determined by differential leveling and
 DP9241.adjusted by the NATIONAL GEODETIC SURVEY
 DP9241.in July 2016.
 DP9241
 DP9241.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9241.GEOID18 height accuracy estimate available here.
 DP9241
 DP9241.Click photographs - Photos may exist for this station.
 DP9241
 DP9241.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9241
 DP9241.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9241
 DP9241.The ellipsoidal height was determined by GPS observations
 DP9241.and is referenced to NAD 83.
 DP9241
 DP9241.The dynamic height is computed by dividing the NAVD 88
 DP9241.geopotential number by the normal gravity value computed on the
 DP9241.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9241.degrees latitude (g = 980.6199 gals.).
 DP9241
 DP9241.The modeled gravity was interpolated from observed gravity values.
 DP9241
 DP9241. The following values were computed from the NAD 83(2011) position.
 DP9241
 DP9241;                    North         East     Units Scale Factor Converg.
 DP9241;SPC MD       -    73,885.528   565,994.354   MT  0.99999713   +1 11 29.0
 DP9241;SPC MD       -   242,406.10  1,856,933.14   sFT  0.99999713   +1 11 29.0
 DP9241;UTM  18      - 4,240,962.440   491,103.636   MT  0.99960097   -0 03 47.1
 DP9241
 DP9241!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9241!SPC MD       -   1.00000546  x   0.99999713  =   1.00000259
 DP9241!UTM  18      -   1.00000546  x   0.99960097  =   0.99960643
 DP9241
 DP9241_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9110340962(NAD 83)
 DP9241
 DP9241                          SUPERSEDED SURVEY CONTROL
 DP9241
 DP9241.No superseded survey control is available for this station.
 DP9241
 DP9241_MARKER: DD = SURVEY DISK
 DP9241_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9241_STAMPING: GPS-1 1993
 DP9241_MARK LOGO: NPS
 DP9241_PROJECTION: FLUSH
 DP9241_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9241_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9241_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9241+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9241_ROD/PIPE-DEPTH: 4.9 meters
 DP9241
 DP9241  HISTORY     - Date     Condition        Report By
 DP9241  HISTORY     - 1993     MONUMENTED       NPS
 DP9241  HISTORY     - 20150227 GOOD             NPS
 DP9241
 DP9241                          STATION DESCRIPTION
 DP9241
 DP9241'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9241'THE STATION IS LOCATED ABOUT 6.3 MI (10.1 KM) EAST OF BERLIN, 5.8 MI
 DP9241'(9.3 KM) SOUTH-SOUTHEAST OF OCEAN PINES AND 1.6 MI (2.6 KM)
 DP9241'SOUTH-SOUTHWEST OF OCEAN CITY.
 DP9241'
 DP9241'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY.  CONTINUE ON
 DP9241'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9241'SHELL ROAD.
 DP9241'
 DP9241'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9241'NATIONAL SEASHORE.
 DP9241'
 DP9241'THE STATION IS NORTHWEST OF KM 1.0.  THE STATION IS 103 M (337.9 FT)
 DP9241'NORTHWEST OF KILOMETER POST 1.0, 60 CM (24 INCHES) SOUTHEAST OF ORANGE
 DP9241'CARSONITE WITNESS POST AND 63 M (206.7 FT) SOUTHWEST OF -ASIS 001
 DP9241'2010-.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2403 ***********************************************************************
 DR2403  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2403  DESIGNATION -  GPS 10
 DR2403  PID         -  DR2403
 DR2403  STATE/COUNTY-  MD/WORCESTER
 DR2403  COUNTRY     -  US
 DR2403  USGS QUAD   -  TINGLES ISLAND (2016)
 DR2403
 DR2403                         *CURRENT SURVEY CONTROL
 DR2403  ______________________________________________________________________
 DR2403* NAD 83(2011) POSITION- 38 09 50.00696(N) 075 10 08.10361(W)   ADJUSTED
 DR2403* NAD 83(2011) ELLIP HT-   -34.956 (meters)        (06/05/19)   ADJUSTED
 DR2403* NAD 83(2011) EPOCH   -  2010.00
 DR2403* NAVD 88 ORTHO HEIGHT -     1.35  (meters)        4.4   (feet) GPS OBS
 DR2403  ______________________________________________________________________
 DR2403  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2403  GEOID HEIGHT    -        -36.254 (meters)                     GEOID12B
 DR2403  GEOID HEIGHT    -        -36.258 (meters)                     GEOID18
 DR2403  NAD 83(2011) X  -  1,285,272.892 (meters)                     COMP
 DR2403  NAD 83(2011) Y  - -4,853,899.189 (meters)                     COMP
 DR2403  NAD 83(2011) Z  -  3,919,741.474 (meters)                     COMP
 DR2403  LAPLACE CORR    -          0.46  (seconds)                    DEFLEC18
 DR2403
 DR2403  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2403  Standards:
 DR2403         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2403            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2403  -------------------------------------------------------------------
 DR2403  NETWORK    1.01   0.84           0.49   0.28   0.43     -0.00659446
 DR2403  -------------------------------------------------------------------
 DR2403  Click here for local accuracies and other accuracy information.
 DR2403
 DR2403.The horizontal coordinates were established by GPS observations
 DR2403.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2403
 DR2403.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2403.been affixed to the stable North American tectonic plate. See 
 DR2403.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2403
 DR2403.The horizontal coordinates are valid at the epoch date displayed above
 DR2403.which is a decimal equivalence of Year/Month/Day.
 DR2403
 DR2403.The orthometric height was determined by GPS observations and a
 DR2403.high-resolution geoid model using precise GPS observation and
 DR2403.processing techniques.
 DR2403
 DR2403.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2403.GEOID18 height accuracy estimate available here.
 DR2403
 DR2403.Click photographs - Photos may exist for this station.
 DR2403
 DR2403.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2403
 DR2403.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2403
 DR2403.The ellipsoidal height was determined by GPS observations
 DR2403.and is referenced to NAD 83.
 DR2403
 DR2403. The following values were computed from the NAD 83(2011) position.
 DR2403
 DR2403;                    North         East     Units Scale Factor Converg.
 DR2403;SPC MD       -    56,803.781   560,463.370   MT  1.00002647   +1 08 57.3
 DR2403;SPC MD       -   186,363.74  1,838,786.91   sFT  1.00002647   +1 08 57.3
 DR2403;UTM  18      - 4,224,012.780   485,202.541   MT  0.99960270   -0 06 15.8
 DR2403
 DR2403!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2403!SPC MD       -   1.00000549  x   1.00002647  =   1.00003196
 DR2403!UTM  18      -   1.00000549  x   0.99960270  =   0.99960818
 DR2403
 DR2403_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8520224012(NAD 83)
 DR2403
 DR2403                          SUPERSEDED SURVEY CONTROL
 DR2403
 DR2403.No superseded survey control is available for this station.
 DR2403
 DR2403_MARKER: DD = SURVEY DISK
 DR2403_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DR2403_STAMPING: GPS-10 1993
 DR2403_MARK LOGO: NPS
 DR2403_PROJECTION: RECESSED 76 CENTIMETERS
 DR2403_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2403_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2403_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2403+SATELLITE: SATELLITE OBSERVATIONS - December 01, 1993
 DR2403_ROD/PIPE-DEPTH: 4.9 meters
 DR2403
 DR2403  HISTORY     - Date     Condition        Report By
 DR2403  HISTORY     - 19931201 MONUMENTED       NPS
 DR2403
 DR2403                          STATION DESCRIPTION
 DR2403
 DR2403'DESCRIBED BY NATIONAL PARK SERVICE 1993 (NTW)
 DR2403'THE STATION IS LOCATED ABOUT 11.3 MI (18.1 KM) SOUTH-SOUTHEAST OF
 DR2403'BERLIN, 10.4 MI (16.7 KM) EAST-NORTHEAST OF BOXIRON AND 8.9 MI (14.4
 DR2403'KM) SOUTHEAST OF NEWARK.
 DR2403'
 DR2403'THE STATION IS LOCATED AT KM 18.9 IN THE OSV ZONE (HUNGERFORD'S). FROM
 DR2403'BAYBERRY DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL
 DR2403'DRIVE REQUIRED). DRIVE SOUTH ON THE BEACH 2.9 KM (1.8 MI), TURN RIGHT
 DR2403'ONTO HUNGERFORDS ROAD AND CONTINUE FOR 191.4 M (628 FT).
 DR2403'
 DR2403'THE STATION IS 6 M (19.7 FT) NORTH OF THE CENTER OF THE ROAD, 45 CM
 DR2403'(17.7 IN) EAST OF AN ORANGE CARSONITE WITNESS POST, AND IS RECESSED 55
 DR2403'CM (21.7 IN). VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE
 DR2403'ISLAND NATIONAL SEASHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AH5613 ***********************************************************************
 AH5613  DESIGNATION -  GPS 11 CF
 AH5613  PID         -  AH5613
 AH5613  STATE/COUNTY-  MD/PRINCE GEORGES
 AH5613  COUNTRY     -  US
 AH5613  USGS QUAD   -  LAUREL (2016)
 AH5613
 AH5613                         *CURRENT SURVEY CONTROL
 AH5613  ______________________________________________________________________
 AH5613* NAD 83(1986) POSITION- 39 01 38.     (N) 076 50 11.     (W)   SCALED
 AH5613* NAVD 88 ORTHO HEIGHT -    39.822 (meters)      130.65  (feet) ADJUSTED
 AH5613  ______________________________________________________________________
 AH5613  GEOID HEIGHT    -        -32.348 (meters)                     GEOID18
 AH5613  DYNAMIC HEIGHT  -         39.800 (meters)      130.58  (feet) COMP
 AH5613  MODELED GRAVITY -    980,091.8   (mgal)                       NAVD 88
 AH5613
 AH5613  VERT ORDER      -  SECOND    CLASS II
 AH5613
 AH5613.The horizontal coordinates were scaled from a map and have
 AH5613.an estimated accuracy of +/- 6 seconds.
 AH5613
 AH5613.The orthometric height was determined by differential leveling and
 AH5613.adjusted by the NATIONAL GEODETIC SURVEY
 AH5613.in April 1999.
 AH5613
 AH5613.Significant digits in the geoid height do not necessarily reflect accuracy.
 AH5613.GEOID18 height accuracy estimate available here.
 AH5613
 AH5613.Click photographs - Photos may exist for this station.
 AH5613
 AH5613.The dynamic height is computed by dividing the NAVD 88
 AH5613.geopotential number by the normal gravity value computed on the
 AH5613.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AH5613.degrees latitude (g = 980.6199 gals.).
 AH5613
 AH5613.The modeled gravity was interpolated from observed gravity values.
 AH5613
 AH5613;                    North         East    Units  Estimated Accuracy
 AH5613;SPC MD       -   151,040.      414,170.      MT  (+/- 180 meters Scaled)
 AH5613
 AH5613_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ410214(NAD 83)
 AH5613
 AH5613                          SUPERSEDED SURVEY CONTROL
 AH5613
 AH5613.No superseded survey control is available for this station.
 AH5613
 AH5613_MARKER: DD = SURVEY DISK
 AH5613_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 AH5613_STAMPING: GPS 11 CF NOV 1992
 AH5613_MARK LOGO: USDA
 AH5613_PROJECTION: FLUSH
 AH5613_MAGNETIC: N = NO MAGNETIC MATERIAL
 AH5613_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AH5613
 AH5613  HISTORY     - Date     Condition        Report By
 AH5613  HISTORY     - 1992     MONUMENTED       USDA
 AH5613  HISTORY     - 19980818 GOOD             NGS
 AH5613
 AH5613                          STATION DESCRIPTION
 AH5613
 AH5613'DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 AH5613'3.9 MILES (6.3 KM) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 AH5613'OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 1.0 KM (0.6 MI) SOUTHEASTERLY
 AH5613'ALONG SPRINGFIELD ROAD TO THE MARK ON THE RIGHT IN FIELD OWNED BY THE
 AH5613'U.S. GOVERNMENT, 38.2 METERS (125.3 FT) NORTHWEST OF BM U 191, 12.8
 AH5613'METERS (42.0 FT) WEST OF A WOODEN CORNER POST, 7.9 METERS (25.9 FT)
 AH5613'NORTHEAST OF A CHAIN LINK FENCE CORNER POST, 19.0 METERS (62.3 FT)
 AH5613'SOUTHWEST OF THE CENTERLINE OF SPRINGFIELD ROAD, AND 0.7 METER (2.3
 AH5613'FT) EAST OF A CARSONITE WITNESS SIGN.   NOTE--DEPTH OF ROD IS UNKNOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2407 ***********************************************************************
 DR2407  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2407  DESIGNATION -  GPS 12
 DR2407  PID         -  DR2407
 DR2407  STATE/COUNTY-  MD/WORCESTER
 DR2407  COUNTRY     -  US
 DR2407  USGS QUAD   -  TINGLES ISLAND (2016)
 DR2407
 DR2407                         *CURRENT SURVEY CONTROL
 DR2407  ______________________________________________________________________
 DR2407* NAD 83(2011) POSITION- 38 07 42.30778(N) 075 10 51.97264(W)   ADJUSTED
 DR2407* NAD 83(2011) ELLIP HT-   -34.917 (meters)        (06/05/19)   ADJUSTED
 DR2407* NAD 83(2011) EPOCH   -  2010.00
 DR2407* NAVD 88 ORTHO HEIGHT -     1.43  (meters)        4.7   (feet) GPS OBS
 DR2407  ______________________________________________________________________
 DR2407  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2407  GEOID HEIGHT    -        -36.295 (meters)                     GEOID12B
 DR2407  GEOID HEIGHT    -        -36.300 (meters)                     GEOID18
 DR2407  NAD 83(2011) X  -  1,284,862.543 (meters)                     COMP
 DR2407  NAD 83(2011) Y  - -4,856,523.552 (meters)                     COMP
 DR2407  NAD 83(2011) Z  -  3,916,645.023 (meters)                     COMP
 DR2407  LAPLACE CORR    -          0.68  (seconds)                    DEFLEC18
 DR2407
 DR2407  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2407  Standards:
 DR2407         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2407            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2407  -------------------------------------------------------------------
 DR2407  NETWORK    0.99   0.82           0.48   0.26   0.42      0.00134790
 DR2407  -------------------------------------------------------------------
 DR2407  Click here for local accuracies and other accuracy information.
 DR2407
 DR2407.The horizontal coordinates were established by GPS observations
 DR2407.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2407
 DR2407.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2407.been affixed to the stable North American tectonic plate. See 
 DR2407.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2407
 DR2407.The horizontal coordinates are valid at the epoch date displayed above
 DR2407.which is a decimal equivalence of Year/Month/Day.
 DR2407
 DR2407.The orthometric height was determined by GPS observations and a
 DR2407.high-resolution geoid model using precise GPS observation and
 DR2407.processing techniques.
 DR2407
 DR2407.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2407.GEOID18 height accuracy estimate available here.
 DR2407
 DR2407.Click photographs - Photos may exist for this station.
 DR2407
 DR2407.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2407
 DR2407.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2407
 DR2407.The ellipsoidal height was determined by GPS observations
 DR2407.and is referenced to NAD 83.
 DR2407
 DR2407. The following values were computed from the NAD 83(2011) position.
 DR2407
 DR2407;                    North         East     Units Scale Factor Converg.
 DR2407;SPC MD       -    52,845.730   559,474.077   MT  1.00003428   +1 08 29.8
 DR2407;SPC MD       -   173,378.03  1,835,541.20   sFT  1.00003428   +1 08 29.8
 DR2407;UTM  18      - 4,220,079.000   484,127.357   MT  0.99960310   -0 06 42.5
 DR2407
 DR2407!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2407!SPC MD       -   1.00000548  x   1.00003428  =   1.00003976
 DR2407!UTM  18      -   1.00000548  x   0.99960310  =   0.99960858
 DR2407
 DR2407_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8412720079(NAD 83)
 DR2407
 DR2407                          SUPERSEDED SURVEY CONTROL
 DR2407
 DR2407.No superseded survey control is available for this station.
 DR2407
 DR2407_MARKER: DD = SURVEY DISK
 DR2407_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DR2407_STAMPING: GPS-12 1993
 DR2407_MARK LOGO: NPS
 DR2407_PROJECTION: FLUSH
 DR2407_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2407_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2407_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2407+SATELLITE: SATELLITE OBSERVATIONS - December 01, 1993
 DR2407_ROD/PIPE-DEPTH: 4.9 meters
 DR2407
 DR2407  HISTORY     - Date     Condition        Report By
 DR2407  HISTORY     - 19931201 MONUMENTED       NPS
 DR2407
 DR2407                          STATION DESCRIPTION
 DR2407
 DR2407'DESCRIBED BY NATIONAL PARK SERVICE 1993 (NTW)
 DR2407'THE STATION IS LOCATED ABOUT 12.0 MI (19.4 KM) EAST-SOUTHEAST OF SNOW
 DR2407'HILL, 10.3 MI (16.7 KM) SOUTHEAST OF NEWARK AND 9.2 MI (14.8 KM) EAST
 DR2407'OF BOXIRON.
 DR2407'
 DR2407'THE STATION IS LOCATED AT KM 23.0 IN THE OSV ZONE. FROM BAYBERRY
 DR2407'DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE
 DR2407'REQUIRED). DRIVE SOUTH ON THE BEACH 7 KM (4.3 MI), PARK VEHICLE, AND
 DR2407'WALK WEST-NORTHWEST FOR 177 M (580.4 FT).
 DR2407'
 DR2407'THE STATION IS 50 CM (19.7 IN) EAST-SOUTHEAST OF AN ORANGE CARSONITE
 DR2407'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2409 ***********************************************************************
 DR2409  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2409  DESIGNATION -  GPS 13
 DR2409  PID         -  DR2409
 DR2409  STATE/COUNTY-  MD/WORCESTER
 DR2409  COUNTRY     -  US
 DR2409  USGS QUAD   -  WHITTINGTON POINT (2016)
 DR2409
 DR2409                         *CURRENT SURVEY CONTROL
 DR2409  ______________________________________________________________________
 DR2409* NAD 83(2011) POSITION- 38 06 42.78374(N) 075 11 19.19393(W)   ADJUSTED
 DR2409* NAD 83(2011) ELLIP HT-   -35.783 (meters)        (06/05/19)   ADJUSTED
 DR2409* NAD 83(2011) EPOCH   -  2010.00
 DR2409* NAVD 88 ORTHO HEIGHT -     0.58  (meters)        1.9   (feet) GPS OBS
 DR2409  ______________________________________________________________________
 DR2409  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2409  GEOID HEIGHT    -        -36.314 (meters)                     GEOID12B
 DR2409  GEOID HEIGHT    -        -36.320 (meters)                     GEOID18
 DR2409  NAD 83(2011) X  -  1,284,511.053 (meters)                     COMP
 DR2409  NAD 83(2011) Y  - -4,857,787.723 (meters)                     COMP
 DR2409  NAD 83(2011) Z  -  3,915,200.630 (meters)                     COMP
 DR2409  LAPLACE CORR    -          0.71  (seconds)                    DEFLEC18
 DR2409
 DR2409  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2409  Standards:
 DR2409         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2409            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2409  -------------------------------------------------------------------
 DR2409  NETWORK    1.02   0.86           0.49   0.29   0.44     -0.00540023
 DR2409  -------------------------------------------------------------------
 DR2409  Click here for local accuracies and other accuracy information.
 DR2409
 DR2409.The horizontal coordinates were established by GPS observations
 DR2409.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2409
 DR2409.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2409.been affixed to the stable North American tectonic plate. See 
 DR2409.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2409
 DR2409.The horizontal coordinates are valid at the epoch date displayed above
 DR2409.which is a decimal equivalence of Year/Month/Day.
 DR2409
 DR2409.The orthometric height was determined by GPS observations and a
 DR2409.high-resolution geoid model using precise GPS observation and
 DR2409.processing techniques.
 DR2409
 DR2409.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2409.GEOID18 height accuracy estimate available here.
 DR2409
 DR2409.Click photographs - Photos may exist for this station.
 DR2409
 DR2409.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2409
 DR2409.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2409
 DR2409.The ellipsoidal height was determined by GPS observations
 DR2409.and is referenced to NAD 83.
 DR2409
 DR2409. The following values were computed from the NAD 83(2011) position.
 DR2409
 DR2409;                    North         East     Units Scale Factor Converg.
 DR2409;SPC MD       -    50,997.539   558,847.618   MT  1.00003805   +1 08 12.7
 DR2409;SPC MD       -   167,314.43  1,833,485.89   sFT  1.00003805   +1 08 12.7
 DR2409;UTM  18      - 4,218,245.748   483,460.909   MT  0.99960337   -0 06 59.2
 DR2409
 DR2409!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2409!SPC MD       -   1.00000561  x   1.00003805  =   1.00004367
 DR2409!UTM  18      -   1.00000561  x   0.99960337  =   0.99960898
 DR2409
 DR2409_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8346018245(NAD 83)
 DR2409
 DR2409                          SUPERSEDED SURVEY CONTROL
 DR2409
 DR2409.No superseded survey control is available for this station.
 DR2409
 DR2409_MARKER: DD = SURVEY DISK
 DR2409_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DR2409_STAMPING: GPS-13 1993
 DR2409_MARK LOGO: NPS
 DR2409_PROJECTION: RECESSED 8 CENTIMETERS
 DR2409_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2409_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2409_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2409+SATELLITE: SATELLITE OBSERVATIONS - December 01, 1993
 DR2409_ROD/PIPE-DEPTH: 4.9 meters
 DR2409
 DR2409  HISTORY     - Date     Condition        Report By
 DR2409  HISTORY     - 19931201 MONUMENTED       NPS
 DR2409
 DR2409                          STATION DESCRIPTION
 DR2409
 DR2409'DESCRIBED BY NATIONAL PARK SERVICE 1993 (NTW)
 DR2409'THE STATION IS LOCATED ABOUT 11.5 MI (18.5 KM) EAST OF GIRDLETREE,
 DR2409'11.1 MI (17.8 KM) SOUTH-SOUTHEAST OF NEWARK AND 8.8 MI (14.1 KM) EAST
 DR2409'OF BOXIRON.
 DR2409'
 DR2409'THE STATION IS LOCATED AT KM 24.9 IN THE OSV ZONE. FROM BAYBERRY
 DR2409'DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE
 DR2409'REQUIRED). DRIVE SOUTH ON THE BEACH 8.9 KM (5.5 MI), PARK VEHICLE, AND
 DR2409'WALK WEST FOR 218 M (715 FT).
 DR2409'
 DR2409'THE STATION IS 43 CM (16.9 IN) EAST OF AN ORANGE CARSONITE WITNESS
 DR2409'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2411 ***********************************************************************
 DR2411  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2411  DESIGNATION -  GPS 14
 DR2411  PID         -  DR2411
 DR2411  STATE/COUNTY-  MD/WORCESTER
 DR2411  COUNTRY     -  US
 DR2411  USGS QUAD   -  WHITTINGTON POINT (2016)
 DR2411
 DR2411                         *CURRENT SURVEY CONTROL
 DR2411  ______________________________________________________________________
 DR2411* NAD 83(2011) POSITION- 38 05 39.83198(N) 075 11 52.93480(W)   ADJUSTED
 DR2411* NAD 83(2011) ELLIP HT-   -35.072 (meters)        (06/05/19)   ADJUSTED
 DR2411* NAD 83(2011) EPOCH   -  2010.00
 DR2411* NAVD 88 ORTHO HEIGHT -     1.31  (meters)        4.3   (feet) GPS OBS
 DR2411  ______________________________________________________________________
 DR2411  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2411  GEOID HEIGHT    -        -36.335 (meters)                     GEOID12B
 DR2411  GEOID HEIGHT    -        -36.342 (meters)                     GEOID18
 DR2411  NAD 83(2011) X  -  1,284,022.536 (meters)                     COMP
 DR2411  NAD 83(2011) Y  - -4,859,156.307 (meters)                     COMP
 DR2411  NAD 83(2011) Z  -  3,913,673.714 (meters)                     COMP
 DR2411  LAPLACE CORR    -          0.72  (seconds)                    DEFLEC18
 DR2411
 DR2411  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2411  Standards:
 DR2411         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2411            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2411  -------------------------------------------------------------------
 DR2411  NETWORK    1.02   0.86           0.49   0.29   0.44     -0.00923524
 DR2411  -------------------------------------------------------------------
 DR2411  Click here for local accuracies and other accuracy information.
 DR2411
 DR2411.The horizontal coordinates were established by GPS observations
 DR2411.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2411
 DR2411.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2411.been affixed to the stable North American tectonic plate. See 
 DR2411.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2411
 DR2411.The horizontal coordinates are valid at the epoch date displayed above
 DR2411.which is a decimal equivalence of Year/Month/Day.
 DR2411
 DR2411.The orthometric height was determined by GPS observations and a
 DR2411.high-resolution geoid model using precise GPS observation and
 DR2411.processing techniques.
 DR2411
 DR2411.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2411.GEOID18 height accuracy estimate available here.
 DR2411
 DR2411.Click photographs - Photos may exist for this station.
 DR2411
 DR2411.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2411
 DR2411.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2411
 DR2411.The ellipsoidal height was determined by GPS observations
 DR2411.and is referenced to NAD 83.
 DR2411
 DR2411. The following values were computed from the NAD 83(2011) position.
 DR2411
 DR2411;                    North         East     Units Scale Factor Converg.
 DR2411;SPC MD       -    49,040.588   558,064.106   MT  1.00004213   +1 07 51.5
 DR2411;SPC MD       -   160,894.00  1,830,915.32   sFT  1.00004213   +1 07 51.5
 DR2411;UTM  18      - 4,216,307.248   482,635.144   MT  0.99960371   -0 07 19.9
 DR2411
 DR2411!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2411!SPC MD       -   1.00000550  x   1.00004213  =   1.00004763
 DR2411!UTM  18      -   1.00000550  x   0.99960371  =   0.99960921
 DR2411
 DR2411_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8263516307(NAD 83)
 DR2411
 DR2411                          SUPERSEDED SURVEY CONTROL
 DR2411
 DR2411.No superseded survey control is available for this station.
 DR2411
 DR2411_MARKER: DD = SURVEY DISK
 DR2411_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DR2411_STAMPING: GPS-14 1993
 DR2411_MARK LOGO: NPS
 DR2411_PROJECTION: FLUSH
 DR2411_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2411_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2411_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2411+SATELLITE: SATELLITE OBSERVATIONS - December 01, 1993
 DR2411_ROD/PIPE-DEPTH: 4.9 meters
 DR2411
 DR2411  HISTORY     - Date     Condition        Report By
 DR2411  HISTORY     - 19931201 MONUMENTED       NPS
 DR2411
 DR2411                          STATION DESCRIPTION
 DR2411
 DR2411'DESCRIBED BY NATIONAL PARK SERVICE 1993 (NTW)
 DR2411'THE STATION IS LOCATED ABOUT 11.9 MI (19.1 KM) EAST-NORTHEAST OF
 DR2411'STOCKTON, 10.9 MI (17.5 KM) EAST OF GIRDLETREE AND 8.4 MI (13.5 KM)
 DR2411'EAST OF BOXIRON.
 DR2411'
 DR2411'THE STATION IS LOCATED AT KM 27.0 IN THE OSV ZONE. FROM BAYBERRY
 DR2411'DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE
 DR2411'REQUIRED). DRIVE SOUTH ON THE BEACH 11 KM (6.8 MI), PARK VEHICLE, AND
 DR2411'WALK WEST-NORTHWEST FOR 207.3 M (680.2 FT).
 DR2411'
 DR2411'THE STATION IS 19.3 M (63.3 FT) WEST OF THE CENTER-LINE OF AN OLD
 DR2411'ROADBED AND 40 CM (15.7 IN) EAST-SOUTHEAST OF AN ORANGE CARSONITE
 DR2411'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2413 ***********************************************************************
 DR2413  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2413  DESIGNATION -  GPS 15
 DR2413  PID         -  DR2413
 DR2413  STATE/COUNTY-  MD/WORCESTER
 DR2413  COUNTRY     -  US
 DR2413  USGS QUAD   -  WHITTINGTON POINT (2016)
 DR2413
 DR2413                         *CURRENT SURVEY CONTROL
 DR2413  ______________________________________________________________________
 DR2413* NAD 83(2011) POSITION- 38 04 39.47055(N) 075 12 30.05528(W)   ADJUSTED
 DR2413* NAD 83(2011) ELLIP HT-   -34.793 (meters)        (06/05/19)   ADJUSTED
 DR2413* NAD 83(2011) EPOCH   -  2010.00
 DR2413* NAVD 88 ORTHO HEIGHT -     1.61  (meters)        5.3   (feet) GPS OBS
 DR2413  ______________________________________________________________________
 DR2413  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2413  GEOID HEIGHT    -        -36.356 (meters)                     GEOID12B
 DR2413  GEOID HEIGHT    -        -36.363 (meters)                     GEOID18
 DR2413  NAD 83(2011) X  -  1,283,441.185 (meters)                     COMP
 DR2413  NAD 83(2011) Y  - -4,860,497.485 (meters)                     COMP
 DR2413  NAD 83(2011) Z  -  3,912,209.039 (meters)                     COMP
 DR2413  LAPLACE CORR    -          0.72  (seconds)                    DEFLEC18
 DR2413
 DR2413  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2413  Standards:
 DR2413         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2413            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2413  -------------------------------------------------------------------
 DR2413  NETWORK    1.04   0.86           0.50   0.29   0.44     -0.01177670
 DR2413  -------------------------------------------------------------------
 DR2413  Click here for local accuracies and other accuracy information.
 DR2413
 DR2413.The horizontal coordinates were established by GPS observations
 DR2413.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2413
 DR2413.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2413.been affixed to the stable North American tectonic plate. See 
 DR2413.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2413
 DR2413.The horizontal coordinates are valid at the epoch date displayed above
 DR2413.which is a decimal equivalence of Year/Month/Day.
 DR2413
 DR2413.The orthometric height was determined by GPS observations and a
 DR2413.high-resolution geoid model using precise GPS observation and
 DR2413.processing techniques.
 DR2413
 DR2413.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2413.GEOID18 height accuracy estimate available here.
 DR2413
 DR2413.Click photographs - Photos may exist for this station.
 DR2413
 DR2413.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2413
 DR2413.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2413
 DR2413.The ellipsoidal height was determined by GPS observations
 DR2413.and is referenced to NAD 83.
 DR2413
 DR2413. The following values were computed from the NAD 83(2011) position.
 DR2413
 DR2413;                    North         East     Units Scale Factor Converg.
 DR2413;SPC MD       -    47,161.950   557,196.269   MT  1.00004612   +1 07 28.2
 DR2413;SPC MD       -   154,730.50  1,828,068.09   sFT  1.00004612   +1 07 28.2
 DR2413;UTM  18      - 4,214,448.856   481,726.832   MT  0.99960411   -0 07 42.6
 DR2413
 DR2413!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2413!SPC MD       -   1.00000546  x   1.00004612  =   1.00005158
 DR2413!UTM  18      -   1.00000546  x   0.99960411  =   0.99960957
 DR2413
 DR2413_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8172614448(NAD 83)
 DR2413
 DR2413                          SUPERSEDED SURVEY CONTROL
 DR2413
 DR2413.No superseded survey control is available for this station.
 DR2413
 DR2413_MARKER: DD = SURVEY DISK
 DR2413_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DR2413_STAMPING: GPS-15 1993
 DR2413_MARK LOGO: NPS
 DR2413_PROJECTION: FLUSH
 DR2413_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2413_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2413_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2413+SATELLITE: SATELLITE OBSERVATIONS - December 01, 1993
 DR2413_ROD/PIPE-DEPTH: 4.9 meters
 DR2413
 DR2413  HISTORY     - Date     Condition        Report By
 DR2413  HISTORY     - 19931201 MONUMENTED       NPS
 DR2413
 DR2413                          STATION DESCRIPTION
 DR2413
 DR2413'DESCRIBED BY NATIONAL PARK SERVICE 1993 (NTW)
 DR2413'THE STATION IS LOCATED ABOUT 11.1 MI (17.9 KM) EAST OF STOCKTON, 10.4
 DR2413'MI (16.7 KM) EAST OF GIRDLETREE AND 8.1 MI (13.1 KM) EAST-SOUTHEAST OF
 DR2413'BOXIRON.
 DR2413'
 DR2413'THE STATION IS LOCATED AT KM 29.1 IN THE OSV ZONE (GREEN RUN). FROM
 DR2413'BAYBERRY DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL
 DR2413'DRIVE REQUIRED). DRIVE SOUTH ON THE BEACH 13.1 KM (8.1 MI), TURN RIGHT
 DR2413'ONTO GREEN RUN ROAD, AND CONTINUE FOR 154 M (505.2 FT).
 DR2413'
 DR2413'THE STATION IS 12.4 M (40.7 FT) NORTH OF THE ROAD, 8.5 M (27.9 FT)
 DR2413'EAST OF A WOODEN GATE POST, AND 45 CM (17.7 IN) NORTHWEST OF AN ORANGE
 DR2413'CARSONITE WITNESS POST. VEHICLE ACCESS REQUIRES PERMISSION FROM
 DR2413'ASSATEAGUE ISLAND NATIONAL SEASHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2414 ***********************************************************************
 DR2414  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2414  DESIGNATION -  GPS 16
 DR2414  PID         -  DR2414
 DR2414  STATE/COUNTY-  MD/WORCESTER
 DR2414  COUNTRY     -  US
 DR2414  USGS QUAD   -  WHITTINGTON POINT (2016)
 DR2414
 DR2414                         *CURRENT SURVEY CONTROL
 DR2414  ______________________________________________________________________
 DR2414* NAD 83(2011) POSITION- 38 03 44.57526(N) 075 13 08.59866(W)   ADJUSTED
 DR2414* NAD 83(2011) ELLIP HT-   -35.186 (meters)        (06/05/19)   ADJUSTED
 DR2414* NAD 83(2011) EPOCH   -  2010.00
 DR2414* NAVD 88 ORTHO HEIGHT -     1.24  (meters)        4.1   (feet) GPS OBS
 DR2414  ______________________________________________________________________
 DR2414  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2414  GEOID HEIGHT    -        -36.375 (meters)                     GEOID12B
 DR2414  GEOID HEIGHT    -        -36.384 (meters)                     GEOID18
 DR2414  NAD 83(2011) X  -  1,282,799.100 (meters)                     COMP
 DR2414  NAD 83(2011) Y  - -4,861,746.066 (meters)                     COMP
 DR2414  NAD 83(2011) Z  -  3,910,876.314 (meters)                     COMP
 DR2414  LAPLACE CORR    -          0.71  (seconds)                    DEFLEC18
 DR2414
 DR2414  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2414  Standards:
 DR2414         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2414            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2414  -------------------------------------------------------------------
 DR2414  NETWORK    1.04   0.88           0.50   0.29   0.45     -0.01172271
 DR2414  -------------------------------------------------------------------
 DR2414  Click here for local accuracies and other accuracy information.
 DR2414
 DR2414.The horizontal coordinates were established by GPS observations
 DR2414.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2414
 DR2414.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2414.been affixed to the stable North American tectonic plate. See 
 DR2414.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2414
 DR2414.The horizontal coordinates are valid at the epoch date displayed above
 DR2414.which is a decimal equivalence of Year/Month/Day.
 DR2414
 DR2414.The orthometric height was determined by GPS observations and a
 DR2414.high-resolution geoid model using precise GPS observation and
 DR2414.processing techniques.
 DR2414
 DR2414.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2414.GEOID18 height accuracy estimate available here.
 DR2414
 DR2414.Click photographs - Photos may exist for this station.
 DR2414
 DR2414.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2414
 DR2414.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2414
 DR2414.The ellipsoidal height was determined by GPS observations
 DR2414.and is referenced to NAD 83.
 DR2414
 DR2414. The following values were computed from the NAD 83(2011) position.
 DR2414
 DR2414;                    North         East     Units Scale Factor Converg.
 DR2414;SPC MD       -    45,451.238   556,290.040   MT  1.00004983   +1 07 04.0
 DR2414;SPC MD       -   149,117.94  1,825,094.91   sFT  1.00004983   +1 07 04.0
 DR2414;UTM  18      - 4,212,759.118   480,783.832   MT  0.99960455   -0 08 06.2
 DR2414
 DR2414!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2414!SPC MD       -   1.00000552  x   1.00004983  =   1.00005535
 DR2414!UTM  18      -   1.00000552  x   0.99960455  =   0.99961007
 DR2414
 DR2414_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8078312759(NAD 83)
 DR2414
 DR2414                          SUPERSEDED SURVEY CONTROL
 DR2414
 DR2414.No superseded survey control is available for this station.
 DR2414
 DR2414_MARKER: DD = SURVEY DISK
 DR2414_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DR2414_STAMPING: GPS-16 1993
 DR2414_MARK LOGO: NPS
 DR2414_PROJECTION: FLUSH
 DR2414_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2414_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2414_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2414+SATELLITE: SATELLITE OBSERVATIONS - December 01, 1993
 DR2414_ROD/PIPE-DEPTH: 4.9 meters
 DR2414
 DR2414  HISTORY     - Date     Condition        Report By
 DR2414  HISTORY     - 19931201 MONUMENTED       NPS
 DR2414
 DR2414                          STATION DESCRIPTION
 DR2414
 DR2414'DESCRIBED BY NATIONAL PARK SERVICE 1993 (NTW)
 DR2414'THE STATION IS LOCATED ABOUT 10.4 MI (16.8 KM) EAST OF STOCKTON, 10.0
 DR2414'MI (16.1 KM) EAST-SOUTHEAST OF GIRDLETREE AND 8.0 MI (12.8 KM)
 DR2414'EAST-SOUTHEAST OF BOXIRON.
 DR2414'
 DR2414'THE STATION IS LOCATED AT KM 31.1 IN THE OSV ZONE. FROM BAYBERRY
 DR2414'DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL DRIVE
 DR2414'REQUIRED). DRIVE SOUTH ON THE BEACH 15.1 KM (9.4 MI), PARK VEHICLE,
 DR2414'AND WALK NORTHWEST FOR 189.7 M (622.4 FT).
 DR2414'
 DR2414'THE STATION IS 55 CM (21.7IN) WEST-NORTHWEST OF AN ORANGE CARSONITE
 DR2414'WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2415 ***********************************************************************
 DR2415  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2415  DESIGNATION -  GPS 17
 DR2415  PID         -  DR2415
 DR2415  STATE/COUNTY-  MD/WORCESTER
 DR2415  COUNTRY     -  US
 DR2415  USGS QUAD   -  WHITTINGTON POINT (2016)
 DR2415
 DR2415                         *CURRENT SURVEY CONTROL
 DR2415  ______________________________________________________________________
 DR2415* NAD 83(2011) POSITION- 38 02 48.23781(N) 075 13 51.52610(W)   ADJUSTED
 DR2415* NAD 83(2011) ELLIP HT-   -35.420 (meters)        (06/05/19)   ADJUSTED
 DR2415* NAD 83(2011) EPOCH   -  2010.00
 DR2415* NAVD 88 ORTHO HEIGHT -     1.03  (meters)        3.4   (feet) GPS OBS
 DR2415  ______________________________________________________________________
 DR2415  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2415  GEOID HEIGHT    -        -36.396 (meters)                     GEOID12B
 DR2415  GEOID HEIGHT    -        -36.405 (meters)                     GEOID18
 DR2415  NAD 83(2011) X  -  1,282,060.160 (meters)                     COMP
 DR2415  NAD 83(2011) Y  - -4,863,048.102 (meters)                     COMP
 DR2415  NAD 83(2011) Z  -  3,909,508.396 (meters)                     COMP
 DR2415  LAPLACE CORR    -          0.70  (seconds)                    DEFLEC18
 DR2415
 DR2415  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2415  Standards:
 DR2415         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2415            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2415  -------------------------------------------------------------------
 DR2415  NETWORK    0.96   0.80           0.47   0.25   0.41      0.00506119
 DR2415  -------------------------------------------------------------------
 DR2415  Click here for local accuracies and other accuracy information.
 DR2415
 DR2415.The horizontal coordinates were established by GPS observations
 DR2415.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2415
 DR2415.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2415.been affixed to the stable North American tectonic plate. See 
 DR2415.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2415
 DR2415.The horizontal coordinates are valid at the epoch date displayed above
 DR2415.which is a decimal equivalence of Year/Month/Day.
 DR2415
 DR2415.The orthometric height was determined by GPS observations and a
 DR2415.high-resolution geoid model using precise GPS observation and
 DR2415.processing techniques.
 DR2415
 DR2415.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2415.GEOID18 height accuracy estimate available here.
 DR2415
 DR2415.Click photographs - Photos may exist for this station.
 DR2415
 DR2415.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2415
 DR2415.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2415
 DR2415.The ellipsoidal height was determined by GPS observations
 DR2415.and is referenced to NAD 83.
 DR2415
 DR2415. The following values were computed from the NAD 83(2011) position.
 DR2415
 DR2415;                    North         East     Units Scale Factor Converg.
 DR2415;SPC MD       -    43,694.095   555,277.394   MT  1.00005370   +1 06 37.1
 DR2415;SPC MD       -   143,353.04  1,821,772.58   sFT  1.00005370   +1 06 37.1
 DR2415;UTM  18      - 4,211,025.310   479,733.482   MT  0.99960506   -0 08 32.5
 DR2415
 DR2415!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2415!SPC MD       -   1.00000556  x   1.00005370  =   1.00005926
 DR2415!UTM  18      -   1.00000556  x   0.99960506  =   0.99961062
 DR2415
 DR2415_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7973311025(NAD 83)
 DR2415
 DR2415                          SUPERSEDED SURVEY CONTROL
 DR2415
 DR2415.No superseded survey control is available for this station.
 DR2415
 DR2415_MARKER: DD = SURVEY DISK
 DR2415_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DR2415_STAMPING: GPS-17 1993
 DR2415_MARK LOGO: NPS
 DR2415_PROJECTION: FLUSH
 DR2415_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2415_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2415_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2415+SATELLITE: SATELLITE OBSERVATIONS - December 01, 1993
 DR2415_ROD/PIPE-DEPTH: 4.9 meters
 DR2415
 DR2415  HISTORY     - Date     Condition        Report By
 DR2415  HISTORY     - 19931201 MONUMENTED       NPS
 DR2415
 DR2415                          STATION DESCRIPTION
 DR2415
 DR2415'DESCRIBED BY NATIONAL PARK SERVICE 1993 (NTW)
 DR2415'THE STATION IS LOCATED ABOUT 9.8 MI (15.7 KM) EAST OF STOCKTON, 9.7 MI
 DR2415'(15.6 KM) EAST-SOUTHEAST OF GIRDLETREE AND 8.0 MI (12.9 KM) SOUTHEAST
 DR2415'OF BOXIRON.
 DR2415'
 DR2415'THE STATION IS LOCATED AT KM 33.1 IN THE OSV ZONE (POPE BAY). FROM
 DR2415'BAYBERRY DRIVE, CONTINUE SOUTH TO THE OSV ZONE (PERMIT AND 4-WHEEL
 DR2415'DRIVE REQUIRED). DRIVE SOUTH ON THE BEACH 17.1 KM (10.6 MI) AND TURN
 DR2415'RIGHT ONTO POPE BAY ROAD. CONTINUE 235 M (771 FT) THEN FOLLOW AN OLD
 DR2415'ROADBED SOUTHWEST FOR 64 M (210 FT).
 DR2415'
 DR2415'THE STATION IS 11.6 M (38 FT) EAST OF THE ROAD AND 34 CM (13.4 IN)
 DR2415'NORTHWEST OF AN ORANGE CARSONITE WITNESS POST. VEHICLE ACCESS REQUIRES
 DR2415'PERMISSION FROM ASSATEAGUE ISLAND NATIONAL SEASHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6967 ***********************************************************************
 JV6967  DESIGNATION -  GPS 193
 JV6967  PID         -  JV6967
 JV6967  STATE/COUNTY-  MD/MONTGOMERY
 JV6967  COUNTRY     -  US
 JV6967  USGS QUAD   -  SENECA (2016)
 JV6967
 JV6967                         *CURRENT SURVEY CONTROL
 JV6967  ______________________________________________________________________
 JV6967* NAD 83(2011) POSITION- 39 04 14.01335(N) 077 19 41.82974(W)   ADJUSTED
 JV6967* NAD 83(2011) ELLIP HT-    27.985 (meters)        (06/27/12)   ADJUSTED
 JV6967* NAD 83(2011) EPOCH   -  2010.00
 JV6967* NAVD 88 ORTHO HEIGHT -    59.730 (meters)      195.96  (feet) ADJUSTED
 JV6967  ______________________________________________________________________
 JV6967  GEOID HEIGHT    -        -31.834 (meters)                     GEOID18
 JV6967  NAD 83(2011) X  -  1,087,700.737 (meters)                     COMP
 JV6967  NAD 83(2011) Y  - -4,837,643.383 (meters)                     COMP
 JV6967  NAD 83(2011) Z  -  3,998,419.178 (meters)                     COMP
 JV6967  LAPLACE CORR    -          3.98  (seconds)                    DEFLEC18
 JV6967  DYNAMIC HEIGHT  -         59.698 (meters)      195.86  (feet) COMP
 JV6967  MODELED GRAVITY -    980,097.5   (mgal)                       NAVD 88
 JV6967
 JV6967  VERT ORDER      -  THIRD
 JV6967
 JV6967  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6967  Standards:
 JV6967         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6967            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6967  -------------------------------------------------------------------
 JV6967  NETWORK    1.68   3.10           0.70   0.66   1.58      0.22872162
 JV6967  -------------------------------------------------------------------
 JV6967  Click here for local accuracies and other accuracy information.
 JV6967
 JV6967.The horizontal coordinates were established by GPS observations
 JV6967.and adjusted by the National Geodetic Survey in June 2012.
 JV6967
 JV6967.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6967.been affixed to the stable North American tectonic plate. See 
 JV6967.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6967
 JV6967.The horizontal coordinates are valid at the epoch date displayed above
 JV6967.which is a decimal equivalence of Year/Month/Day.
 JV6967
 JV6967.The orthometric height was determined by differential leveling and
 JV6967.adjusted by the NATIONAL GEODETIC SURVEY
 JV6967.in September 2004.
 JV6967
 JV6967.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6967.GEOID18 height accuracy estimate available here.
 JV6967
 JV6967.Click photographs - Photos may exist for this station.
 JV6967
 JV6967.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6967
 JV6967.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6967
 JV6967.The ellipsoidal height was determined by GPS observations
 JV6967.and is referenced to NAD 83.
 JV6967
 JV6967.The dynamic height is computed by dividing the NAVD 88
 JV6967.geopotential number by the normal gravity value computed on the
 JV6967.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6967.degrees latitude (g = 980.6199 gals.).
 JV6967
 JV6967.The modeled gravity was interpolated from observed gravity values.
 JV6967
 JV6967. The following values were computed from the NAD 83(2011) position.
 JV6967
 JV6967;                    North         East     Units Scale Factor Converg.
 JV6967;SPC MD       -   155,890.145   371,591.350   MT  0.99995561   -0 12 21.8
 JV6967;SPC MD       -   511,449.58  1,219,129.29   sFT  0.99995561   -0 12 21.8
 JV6967;SPC VA N     - 2,156,481.331 3,601,395.656   MT  0.99997959   +0 43 52.6
 JV6967;SPC VA N     - 7,075,055.83 11,815,578.91   sFT  0.99997959   +0 43 52.6
 JV6967;UTM  18      - 4,327,186.871   298,578.506   MT  1.00009958   -1 28 04.6
 JV6967
 JV6967!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6967!SPC MD       -   0.99999561  x   0.99995561  =   0.99995122
 JV6967!SPC VA N     -   0.99999561  x   0.99997959  =   0.99997520
 JV6967!UTM  18      -   0.99999561  x   1.00009958  =   1.00009519
 JV6967
 JV6967:                Primary Azimuth Mark                     Grid Az
 JV6967:SPC MD       -  GPS 194                                  108 55 43.6
 JV6967:SPC VA N     -  GPS 194                                  107 59 29.2
 JV6967:UTM  18      -  GPS 194                                  110 11 26.4
 JV6967
 JV6967_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9857827186(NAD 83)
 JV6967
 JV6967|---------------------------------------------------------------------|
 JV6967| PID    Reference Object                     Distance      Geod. Az  |
 JV6967|                                                           dddmmss.s |
 JV6967| JV6968 GPS 194                             APPROX. 1.1 KM 1084321.8 |
 JV6967|---------------------------------------------------------------------|
 JV6967
 JV6967                          SUPERSEDED SURVEY CONTROL
 JV6967
 JV6967  NAD 83(2007)-  39 04 14.01354(N)    077 19 41.83022(W) AD(2002.00) 0
 JV6967  ELLIP H (02/10/07)   28.008  (m)                       GP(2002.00)    
 JV6967  ELLIP H (08/30/02)   28.085  (m)                       GP(       ) 4 2
 JV6967  NAD 83(1993)-  39 04 14.01318(N)    077 19 41.83030(W) AD(       ) 2
 JV6967  ELLIP H (11/14/94)   27.984  (m)                       GP(       ) 4 2
 JV6967  NAD 83(1991)-  39 04 14.01222(N)    077 19 41.83271(W) AD(       ) 2
 JV6967  NGVD 29 (09/10/92)   60.1    (m)  GEOID90  model used  GPS OBS        
 JV6967
 JV6967.Superseded values are not recommended for survey control.
 JV6967
 JV6967.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6967.See file dsdata.pdf to determine how the superseded data were derived.
 JV6967
 JV6967_MARKER: DD = SURVEY DISK
 JV6967_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 JV6967+WITH SETTING: INFORMATION.
 JV6967_STAMPING: GPS 193 1991
 JV6967_MARK LOGO: VA-059
 JV6967_PROJECTION: RECESSED 9 CENTIMETERS
 JV6967_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6967_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6967_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6967+SATELLITE: SATELLITE OBSERVATIONS - September 01, 2014
 JV6967
 JV6967  HISTORY     - Date     Condition        Report By
 JV6967  HISTORY     - 1991     MONUMENTED       MSI
 JV6967  HISTORY     - 19920129 GOOD             MSI
 JV6967  HISTORY     - 20031204 GOOD             VA-059
 JV6967  HISTORY     - 20140901 GOOD             BASE9
 JV6967
 JV6967                          STATION DESCRIPTION
 JV6967
 JV6967'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6967'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6967'7.2 MI (11.6 KM) NORTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6967'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6967'(S.R. 189), PROCEED NORTHWEST ALONG RIVER ROAD FOR 7.2 MI (11.6 KM)
 JV6967'TO THE INTERSECTION WITH VIOLETTES LOCK ROAD.  BEAR LEFT ONTO
 JV6967'VIOLETTES LOCK ROAD AND TRAVEL SOUTH FOR APPROXIMATELT 0.3 MI
 JV6967'(0.5 KM) TO THE STATION ON THE LEFT AT A T INTERSECTION WITH A
 JV6967'PRIVATE ROAD.
 JV6967'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6967'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 193 1991.
 JV6967'THE STATION IS LOCATED IN THE NORTHEAST CORNER OF A T INTERSECTION
 JV6967'NEAR A BARBED WIRE FENCE, 50.5 FT (15.4 M) NORTH OF THE EASTERN POST
 JV6967'OF A U.S.D.I./N.P.S. C AND O CANAL NATIONAL HISTORICAL PARK SIGN,
 JV6967'32.2 FT (9.8 M) NORTHEAST OF PEP POLE NUMBER 631530, 39.1 FT
 JV6967'(11.9 M) NORTHWEST OF PEP POLE NUMBER 631531, AND 15.5 FT (4.7 M)
 JV6967'EAST OF THE APPROXIMATE CENTER LINE OF VIOLETTES LOCK ROAD.
 JV6967
 JV6967                          STATION RECOVERY (1992)
 JV6967
 JV6967'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6967'RECOVERED IN GOOD CONDITION.
 JV6967
 JV6967                          STATION RECOVERY (2003)
 JV6967
 JV6967'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2003 (DRJ)
 JV6967'RECOVERED IN GOOD CONDITION.
 JV6967
 JV6967                          STATION RECOVERY (2014)
 JV6967
 JV6967'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 JV6967'THE BARBED WIRE FENCE AND THE NATIONAL PARK SERVICE HISTORICAL MARKER
 JV6967'MENTIONED IN THE 1991 DESCRIPTION HAVE BEEN REMOVED.  DIRECTIONS AND
 JV6967'DISTANCES FROM UTILITY POLES AND ROAD CENTERLINE WERE SUFFICIENT TO
 JV6967'RECOVER THE MARK.  MARK IS NOW  1.47 M (0.4 FT) EAST OF THE EDGE OF
 JV6967'THE PAVEMENT OF VIOLETTES LOCK ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6968 ***********************************************************************
 JV6968  DESIGNATION -  GPS 194
 JV6968  PID         -  JV6968
 JV6968  STATE/COUNTY-  MD/MONTGOMERY
 JV6968  COUNTRY     -  US
 JV6968  USGS QUAD   -  SENECA (2016)
 JV6968
 JV6968                         *CURRENT SURVEY CONTROL
 JV6968  ______________________________________________________________________
 JV6968* NAD 83(2011) POSITION- 39 04 02.93857(N) 077 18 59.92116(W)   ADJUSTED
 JV6968* NAD 83(2011) ELLIP HT-    79.080 (meters)        (06/27/12)   ADJUSTED
 JV6968* NAD 83(2011) EPOCH   -  2010.00
 JV6968* NAVD 88 ORTHO HEIGHT -   110.858 (meters)      363.71  (feet) ADJUSTED
 JV6968  ______________________________________________________________________
 JV6968  GEOID HEIGHT    -        -31.808 (meters)                     GEOID18
 JV6968  NAD 83(2011) X  -  1,088,739.591 (meters)                     COMP
 JV6968  NAD 83(2011) Y  - -4,837,670.984 (meters)                     COMP
 JV6968  NAD 83(2011) Z  -  3,998,186.224 (meters)                     COMP
 JV6968  LAPLACE CORR    -          3.51  (seconds)                    DEFLEC18
 JV6968  DYNAMIC HEIGHT  -        110.800 (meters)      363.52  (feet) COMP
 JV6968  MODELED GRAVITY -    980,099.2   (mgal)                       NAVD 88
 JV6968
 JV6968  VERT ORDER      -  THIRD
 JV6968
 JV6968  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6968  Standards:
 JV6968         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6968            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6968  -------------------------------------------------------------------
 JV6968  NETWORK    1.58   2.92           0.64   0.64   1.49      0.23277409
 JV6968  -------------------------------------------------------------------
 JV6968  Click here for local accuracies and other accuracy information.
 JV6968
 JV6968.The horizontal coordinates were established by GPS observations
 JV6968.and adjusted by the National Geodetic Survey in June 2012.
 JV6968
 JV6968.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6968.been affixed to the stable North American tectonic plate. See 
 JV6968.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6968
 JV6968.The horizontal coordinates are valid at the epoch date displayed above
 JV6968.which is a decimal equivalence of Year/Month/Day.
 JV6968
 JV6968.The orthometric height was determined by differential leveling and
 JV6968.adjusted by the NATIONAL GEODETIC SURVEY
 JV6968.in September 2004.
 JV6968
 JV6968.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6968.GEOID18 height accuracy estimate available here.
 JV6968
 JV6968.Click photographs - Photos may exist for this station.
 JV6968
 JV6968.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6968
 JV6968.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6968
 JV6968.The ellipsoidal height was determined by GPS observations
 JV6968.and is referenced to NAD 83.
 JV6968
 JV6968.The dynamic height is computed by dividing the NAVD 88
 JV6968.geopotential number by the normal gravity value computed on the
 JV6968.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6968.degrees latitude (g = 980.6199 gals.).
 JV6968
 JV6968.The modeled gravity was interpolated from observed gravity values.
 JV6968
 JV6968. The following values were computed from the NAD 83(2011) position.
 JV6968
 JV6968;                    North         East     Units Scale Factor Converg.
 JV6968;SPC MD       -   155,545.080   372,597.554   MT  0.99995543   -0 11 55.5
 JV6968;SPC MD       -   510,317.48  1,222,430.48   sFT  0.99995543   -0 11 55.5
 JV6968;SPC VA N     - 2,156,152.764 3,602,407.394   MT  0.99997917   +0 44 18.8
 JV6968;SPC VA N     - 7,073,977.86 11,818,898.26   sFT  0.99997917   +0 44 18.8
 JV6968;UTM  18      - 4,326,819.679   299,577.008   MT  1.00009464   -1 27 37.9
 JV6968
 JV6968!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6968!SPC MD       -   0.99998759  x   0.99995543  =   0.99994302
 JV6968!SPC VA N     -   0.99998759  x   0.99997917  =   0.99996676
 JV6968!UTM  18      -   0.99998759  x   1.00009464  =   1.00008223
 JV6968
 JV6968:                Primary Azimuth Mark                     Grid Az
 JV6968:SPC MD       -  GPS 195                                  099 03 54.0
 JV6968:SPC VA N     -  GPS 195                                  098 07 39.7
 JV6968:UTM  18      -  GPS 195                                  100 19 36.4
 JV6968
 JV6968_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9957726819(NAD 83)
 JV6968
 JV6968|---------------------------------------------------------------------|
 JV6968| PID    Reference Object                     Distance      Geod. Az  |
 JV6968|                                                           dddmmss.s |
 JV6968| JV6969 GPS 195                             APPROX. 1.1 KM 0985158.5 |
 JV6968|---------------------------------------------------------------------|
 JV6968
 JV6968                          SUPERSEDED SURVEY CONTROL
 JV6968
 JV6968  NAD 83(2007)-  39 04 02.93872(N)    077 18 59.92169(W) AD(2002.00) 0
 JV6968  ELLIP H (02/10/07)   79.105  (m)                       GP(2002.00)    
 JV6968  ELLIP H (08/30/02)   79.181  (m)                       GP(       ) 4 2
 JV6968  NAD 83(1993)-  39 04 02.93834(N)    077 18 59.92177(W) AD(       ) 2
 JV6968  ELLIP H (11/14/94)   79.080  (m)                       GP(       ) 4 2
 JV6968  NAD 83(1991)-  39 04 02.93744(N)    077 18 59.92410(W) AD(       ) 2
 JV6968  NGVD 29 (09/10/92)  111.1    (m)  GEOID90  model used  GPS OBS        
 JV6968
 JV6968.Superseded values are not recommended for survey control.
 JV6968
 JV6968.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6968.See file dsdata.pdf to determine how the superseded data were derived.
 JV6968
 JV6968_MARKER: DD = SURVEY DISK
 JV6968_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6968_SP_SET: DRIVEN INTO GROUND
 JV6968_STAMPING: GPS 194 1991
 JV6968_MARK LOGO: VA-059
 JV6968_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6968_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6968+STABILITY: SURFACE MOTION
 JV6968_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6968+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2003
 JV6968
 JV6968  HISTORY     - Date     Condition        Report By
 JV6968  HISTORY     - 1991     MONUMENTED       MSI
 JV6968  HISTORY     - 19920129 GOOD             MSI
 JV6968  HISTORY     - 20031204 GOOD             VA-059
 JV6968
 JV6968                          STATION DESCRIPTION
 JV6968
 JV6968'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6968'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6968'6.4 MI (10.3 KM) NORTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6968'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6968'(S.R. 189), PROCEED NORTHWEST ALONG RIVER ROAD FOR 6.4 MI (10.3 KM)
 JV6968'TO THE INTERSECTION WITH SIGNAL TREE LANE.  TURN LEFT ONTO A GRAVEL
 JV6968'DRIVEWAY AND TRAVEL SOUTH FOR 0.4 MI (0.6 KM) , THROUGH TWO GATES,
 JV6968'BEAR RIGHT AND PROCEED WEST ALONG A TRAIL FOR 0.1 MI (0.2 KM) TO THE
 JV6968'STATION ON THE RIGHT, APPROXIMATELY 125 FT (38.1 M) EAST OF A
 JV6968'FENCELINE OVERGROWN WITH TREES AND SHRUBS.
 JV6968'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6968'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 194 1991.
 JV6968'THE STATION IS LOCATED NORTHEAST OF AN ALUMINUM GATE IN A PASTURE,
 JV6968'120.5 FT (36.7 M) NORTHEAST OF A 1.0 FT (0.3 M) TREE AT THE SOUTHERN
 JV6968'END OF THE GATE, 11.5 FT (3.5 M) EAST OF A 0.5 FT (0.2 M) TWIN TREE
 JV6968'AT THE NORTHERN END OF THE GATE, AND 28 FT (8.5 M) NORTH OF THE
 JV6968'APPROXIMATE CENTER LINE OF THE TRAIL.
 JV6968
 JV6968                          STATION RECOVERY (1992)
 JV6968
 JV6968'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6968'RECOVERED IN GOOD CONDITION.
 JV6968
 JV6968                          STATION RECOVERY (2003)
 JV6968
 JV6968'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2003 (DRJ)
 JV6968'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6969 ***********************************************************************
 JV6969  DESIGNATION -  GPS 195
 JV6969  PID         -  JV6969
 JV6969  STATE/COUNTY-  MD/MONTGOMERY
 JV6969  COUNTRY     -  US
 JV6969  USGS QUAD   -  SENECA (2016)
 JV6969
 JV6969                         *CURRENT SURVEY CONTROL
 JV6969  ______________________________________________________________________
 JV6969* NAD 83(2011) POSITION- 39 03 57.64229(N) 077 18 16.38753(W)   ADJUSTED
 JV6969* NAD 83(2011) ELLIP HT-    66.130 (meters)        (06/27/12)   ADJUSTED
 JV6969* NAD 83(2011) EPOCH   -  2010.00
 JV6969* NAVD 88 ORTHO HEIGHT -    97.886 (meters)      321.15  (feet) ADJUSTED
 JV6969  ______________________________________________________________________
 JV6969  GEOID HEIGHT    -        -31.787 (meters)                     GEOID18
 JV6969  NAD 83(2011) X  -  1,089,781.003 (meters)                     COMP
 JV6969  NAD 83(2011) Y  - -4,837,531.699 (meters)                     COMP
 JV6969  NAD 83(2011) Z  -  3,998,051.252 (meters)                     COMP
 JV6969  LAPLACE CORR    -          2.84  (seconds)                    DEFLEC18
 JV6969  DYNAMIC HEIGHT  -         97.835 (meters)      320.98  (feet) COMP
 JV6969  MODELED GRAVITY -    980,101.1   (mgal)                       NAVD 88
 JV6969
 JV6969  VERT ORDER      -  THIRD
 JV6969
 JV6969  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6969  Standards:
 JV6969         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6969            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6969  -------------------------------------------------------------------
 JV6969  NETWORK    1.46   2.76           0.60   0.59   1.41      0.17351942
 JV6969  -------------------------------------------------------------------
 JV6969  Click here for local accuracies and other accuracy information.
 JV6969
 JV6969.The horizontal coordinates were established by GPS observations
 JV6969.and adjusted by the National Geodetic Survey in June 2012.
 JV6969
 JV6969.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6969.been affixed to the stable North American tectonic plate. See 
 JV6969.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6969
 JV6969.The horizontal coordinates are valid at the epoch date displayed above
 JV6969.which is a decimal equivalence of Year/Month/Day.
 JV6969
 JV6969.The orthometric height was determined by differential leveling and
 JV6969.adjusted by the NATIONAL GEODETIC SURVEY
 JV6969.in September 2004.
 JV6969
 JV6969.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6969.GEOID18 height accuracy estimate available here.
 JV6969
 JV6969.Click photographs - Photos may exist for this station.
 JV6969
 JV6969.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6969
 JV6969.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6969
 JV6969.The ellipsoidal height was determined by GPS observations
 JV6969.and is referenced to NAD 83.
 JV6969
 JV6969.The dynamic height is computed by dividing the NAVD 88
 JV6969.geopotential number by the normal gravity value computed on the
 JV6969.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6969.degrees latitude (g = 980.6199 gals.).
 JV6969
 JV6969.The modeled gravity was interpolated from observed gravity values.
 JV6969
 JV6969. The following values were computed from the NAD 83(2011) position.
 JV6969
 JV6969;                    North         East     Units Scale Factor Converg.
 JV6969;SPC MD       -   155,378.200   373,643.505   MT  0.99995534   -0 11 28.1
 JV6969;SPC MD       -   509,769.98  1,225,862.07   sFT  0.99995534   -0 11 28.1
 JV6969;SPC VA N     - 2,156,003.013 3,603,455.960   MT  0.99997897   +0 44 46.0
 JV6969;SPC VA N     - 7,073,486.55 11,822,338.43   sFT  0.99997897   +0 44 46.0
 JV6969;UTM  18      - 4,326,629.783   300,619.174   MT  1.00008951   -1 27 10.2
 JV6969
 JV6969!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6969!SPC MD       -   0.99998962  x   0.99995534  =   0.99994497
 JV6969!SPC VA N     -   0.99998962  x   0.99997897  =   0.99996859
 JV6969!UTM  18      -   0.99998962  x   1.00008951  =   1.00007913
 JV6969
 JV6969:                Primary Azimuth Mark                     Grid Az
 JV6969:SPC MD       -  GPS 196                                  120 18 14.6
 JV6969:SPC VA N     -  GPS 196                                  119 22 00.5
 JV6969:UTM  18      -  GPS 196                                  121 33 56.7
 JV6969
 JV6969_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0061926629(NAD 83)
 JV6969
 JV6969|---------------------------------------------------------------------|
 JV6969| PID    Reference Object                     Distance      Geod. Az  |
 JV6969|                                                           dddmmss.s |
 JV6969| JV6970 GPS 196                             APPROX. 1.1 KM 1200646.5 |
 JV6969|---------------------------------------------------------------------|
 JV6969
 JV6969                          SUPERSEDED SURVEY CONTROL
 JV6969
 JV6969  NAD 83(2007)-  39 03 57.64244(N)    077 18 16.38808(W) AD(2002.00) 0
 JV6969  ELLIP H (02/10/07)   66.156  (m)                       GP(2002.00)    
 JV6969  ELLIP H (08/30/02)   66.231  (m)                       GP(       ) 4 2
 JV6969  NAD 83(1993)-  39 03 57.64206(N)    077 18 16.38817(W) AD(       ) 2
 JV6969  ELLIP H (11/14/94)   66.130  (m)                       GP(       ) 4 2
 JV6969  NAD 83(1991)-  39 03 57.64117(N)    077 18 16.39046(W) AD(       ) 2
 JV6969  NGVD 29 (09/10/92)   98.2    (m)  GEOID90  model used  GPS OBS        
 JV6969
 JV6969.Superseded values are not recommended for survey control.
 JV6969
 JV6969.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6969.See file dsdata.pdf to determine how the superseded data were derived.
 JV6969
 JV6969_MARKER: DD = SURVEY DISK
 JV6969_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6969_SP_SET: DRIVEN INTO GROUND
 JV6969_STAMPING: GPS 195 1991
 JV6969_MARK LOGO: VA-059
 JV6969_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6969_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6969+STABILITY: SURFACE MOTION
 JV6969_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6969+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 JV6969
 JV6969  HISTORY     - Date     Condition        Report By
 JV6969  HISTORY     - 1991     MONUMENTED       MSI
 JV6969  HISTORY     - 19920129 GOOD             MSI
 JV6969  HISTORY     - 20041112 MARK NOT FOUND   VA-059
 JV6969
 JV6969                          STATION DESCRIPTION
 JV6969
 JV6969'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6969'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6969'5.9 MI (9.5 KM) NORTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6969'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6969'(S.R. 189), PROCEED NORTHWEST ALONG RIVER ROAD FOR 5.9 MI (9.5 KM) TO
 JV6969'THE STATION ON THE LEFT AT THE ENTRANCE TO BLOCKHOUSE POINT PARK.
 JV6969'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6969'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 195 1991.
 JV6969'THE STATION IS LOCATED NORTHWEST OF THE ENTRANCE TO BLOCKHOUSE POINT
 JV6969'PARK, 32.0 FT (9.8 M) SOUTHEAST OF A PETROLEUM PIPELINE VENT PIPE,
 JV6969'20.2 FT (6.2 M) SOUTH OF PEPCO POLE NUMBER 713449-3807, AND 9.8 FT
 JV6969'(3.0 M) NORTH OF THE WESTERNMOST STEEL ENTRANCE GATEPOST.
 JV6969
 JV6969                          STATION RECOVERY (1992)
 JV6969
 JV6969'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6969'RECOVERED IN GOOD CONDITION.
 JV6969
 JV6969                          STATION RECOVERY (2004)
 JV6969
 JV6969'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2004 (DRJ)
 JV6969'IN AREA WHERE MONUMENT SHOULD BE IS AN IRON PIN WITH AN UNREADABLE
 JV6969'PLASTIC CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6970 ***********************************************************************
 JV6970  DESIGNATION -  GPS 196
 JV6970  PID         -  JV6970
 JV6970  STATE/COUNTY-  MD/MONTGOMERY
 JV6970  COUNTRY     -  US
 JV6970  USGS QUAD   -  SENECA (2016)
 JV6970
 JV6970                         *CURRENT SURVEY CONTROL
 JV6970  ______________________________________________________________________
 JV6970* NAD 83(2011) POSITION- 39 03 39.22031(N) 077 17 35.65075(W)   ADJUSTED
 JV6970* NAD 83(2011) ELLIP HT-    44.454 (meters)        (06/27/12)   ADJUSTED
 JV6970* NAD 83(2011) EPOCH   -  2010.00
 JV6970* NAVD 88 ORTHO HEIGHT -    76.189 (meters)      249.96  (feet) ADJUSTED
 JV6970  ______________________________________________________________________
 JV6970  GEOID HEIGHT    -        -31.769 (meters)                     GEOID18
 JV6970  NAD 83(2011) X  -  1,090,811.428 (meters)                     COMP
 JV6970  NAD 83(2011) Y  - -4,837,649.196 (meters)                     COMP
 JV6970  NAD 83(2011) Z  -  3,997,596.491 (meters)                     COMP
 JV6970  LAPLACE CORR    -          2.58  (seconds)                    DEFLEC18
 JV6970  DYNAMIC HEIGHT  -         76.149 (meters)      249.83  (feet) COMP
 JV6970  MODELED GRAVITY -    980,103.1   (mgal)                       NAVD 88
 JV6970
 JV6970  VERT ORDER      -  THIRD
 JV6970
 JV6970  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6970  Standards:
 JV6970         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6970            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6970  -------------------------------------------------------------------
 JV6970  NETWORK    1.65   3.10           0.66   0.68   1.58      0.23614817
 JV6970  -------------------------------------------------------------------
 JV6970  Click here for local accuracies and other accuracy information.
 JV6970
 JV6970.The horizontal coordinates were established by GPS observations
 JV6970.and adjusted by the National Geodetic Survey in June 2012.
 JV6970
 JV6970.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6970.been affixed to the stable North American tectonic plate. See 
 JV6970.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6970
 JV6970.The horizontal coordinates are valid at the epoch date displayed above
 JV6970.which is a decimal equivalence of Year/Month/Day.
 JV6970
 JV6970.The orthometric height was determined by differential leveling and
 JV6970.adjusted by the NATIONAL GEODETIC SURVEY
 JV6970.in September 2004.
 JV6970
 JV6970.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6970.GEOID18 height accuracy estimate available here.
 JV6970
 JV6970.Click photographs - Photos may exist for this station.
 JV6970
 JV6970.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6970
 JV6970.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6970
 JV6970.The ellipsoidal height was determined by GPS observations
 JV6970.and is referenced to NAD 83.
 JV6970
 JV6970.The dynamic height is computed by dividing the NAVD 88
 JV6970.geopotential number by the normal gravity value computed on the
 JV6970.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6970.degrees latitude (g = 980.6199 gals.).
 JV6970
 JV6970.The modeled gravity was interpolated from observed gravity values.
 JV6970
 JV6970. The following values were computed from the NAD 83(2011) position.
 JV6970
 JV6970;                    North         East     Units Scale Factor Converg.
 JV6970;SPC MD       -   154,806.926   374,620.965   MT  0.99995505   -0 11 02.6
 JV6970;SPC MD       -   507,895.72  1,229,068.95   sFT  0.99995505   -0 11 02.6
 JV6970;SPC VA N     - 2,155,447.790 3,604,442.656   MT  0.99997827   +0 45 11.4
 JV6970;SPC VA N     - 7,071,664.96 11,825,575.61   sFT  0.99997827   +0 45 11.4
 JV6970;UTM  18      - 4,326,037.048   301,583.946   MT  1.00008478   -1 26 44.0
 JV6970
 JV6970!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6970!SPC MD       -   0.99999303  x   0.99995505  =   0.99994808
 JV6970!SPC VA N     -   0.99999303  x   0.99997827  =   0.99997130
 JV6970!UTM  18      -   0.99999303  x   1.00008478  =   1.00007780
 JV6970
 JV6970:                Primary Azimuth Mark                     Grid Az
 JV6970:SPC MD       -  GPS 197                                  131 04 45.4
 JV6970:SPC VA N     -  GPS 197                                  130 08 31.4
 JV6970:UTM  18      -  GPS 197                                  132 20 26.8
 JV6970
 JV6970_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0158326037(NAD 83)
 JV6970
 JV6970|---------------------------------------------------------------------|
 JV6970| PID    Reference Object                     Distance      Geod. Az  |
 JV6970|                                                           dddmmss.s |
 JV6970| JV6971 GPS 197                             APPROX. 1.2 KM 1305342.8 |
 JV6970|---------------------------------------------------------------------|
 JV6970
 JV6970                          SUPERSEDED SURVEY CONTROL
 JV6970
 JV6970  NAD 83(2007)-  39 03 39.22047(N)    077 17 35.65134(W) AD(2002.00) 0
 JV6970  ELLIP H (02/10/07)   44.479  (m)                       GP(2002.00)    
 JV6970  ELLIP H (08/30/02)   44.555  (m)                       GP(       ) 4 2
 JV6970  NAD 83(1993)-  39 03 39.22008(N)    077 17 35.65143(W) AD(       ) 2
 JV6970  ELLIP H (11/14/94)   44.455  (m)                       GP(       ) 4 2
 JV6970  NAD 83(1991)-  39 03 39.21919(N)    077 17 35.65372(W) AD(       ) 2
 JV6970  NGVD 29 (09/10/92)   76.5    (m)  GEOID90  model used  GPS OBS        
 JV6970
 JV6970.Superseded values are not recommended for survey control.
 JV6970
 JV6970.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6970.See file dsdata.pdf to determine how the superseded data were derived.
 JV6970
 JV6970_MARKER: DD = SURVEY DISK
 JV6970_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6970_SP_SET: DRIVEN INTO GROUND
 JV6970_STAMPING: GPS 196 1991
 JV6970_MARK LOGO: VA-059
 JV6970_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6970_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6970+STABILITY: SURFACE MOTION
 JV6970_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6970+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 JV6970
 JV6970  HISTORY     - Date     Condition        Report By
 JV6970  HISTORY     - 1991     MONUMENTED       MSI
 JV6970  HISTORY     - 19920129 GOOD             MSI
 JV6970  HISTORY     - 20041112 MARK NOT FOUND   VA-059
 JV6970
 JV6970                          STATION DESCRIPTION
 JV6970
 JV6970'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6970'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6970'5.3 MI (8.5 KM) NORTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6970'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6970'(S.R. 189), PROCEED NORTHWEST ALONG RIVER ROAD FOR 4.8 MI (7.7 KM) TO
 JV6970'THE INTERSECTION WITH PENNYFIELD LOCK ROAD.  TURN LEFT ONTO
 JV6970'PENNYFIELD LOCK ROAD AND TRAVEL WEST FOR 0.3 MI (0.5 KM) TO THE
 JV6970'DRIVEWAY TO LONG ACRES FARM (NUMBER 12514 PENNYFIELD LOCK ROAD).
 JV6970'TURN RIGHT AND PROCEED NORTHWEST ALONG THE DRIVEWAY FOR 0.2 MI
 JV6970'(0.3 KM) TO A GARAGE.  TRAVEL SOUTH ACROSS THE BACK YARD TO THE GATE
 JV6970'OF A SPLIT RAIL FENCE. PROCEED SOUTHWEST THROUGH THE GATE
 JV6970'APPROXIMATELY 50 FT (15.2 M) TO THE STATION.
 JV6970'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6970'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 196 1991.
 JV6970'THE STATION IS LOCATED SOUTHWEST OF HOUSE NUMBER 12514, 59.9 FT
 JV6970'(18.3 M) WEST OF THE EASTERNMOST GATEPOST OF A NORTHWEST-SOUTHEAST
 JV6970'SPLIT RAIL FENCEINE, 54.3 FT (16.6 M) SOUTHWEST OF THE WESTERNMOST
 JV6970'GATEPOST, AND 50.0 FT (15.2 M) SOUTHWEST OF A POINT ALONG THE
 JV6970'FENCELINE (WHICH IS 21.0 FT (6.4 M) NORTHWEST OF THE WESTERNMOST
 JV6970'GATEPOST).
 JV6970
 JV6970                          STATION RECOVERY (1992)
 JV6970
 JV6970'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6970'RECOVERED IN GOOD CONDITION.
 JV6970
 JV6970                          STATION RECOVERY (2004)
 JV6970
 JV6970'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2004 (DRJ)
 JV6970'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6971 ***********************************************************************
 JV6971  DESIGNATION -  GPS 197
 JV6971  PID         -  JV6971
 JV6971  STATE/COUNTY-  MD/MONTGOMERY
 JV6971  COUNTRY     -  US
 JV6971  USGS QUAD   -  SENECA (2016)
 JV6971
 JV6971                         *CURRENT SURVEY CONTROL
 JV6971  ______________________________________________________________________
 JV6971* NAD 83(2011) POSITION- 39 03 14.49901(N) 077 16 59.04471(W)   ADJUSTED
 JV6971* NAD 83(2011) ELLIP HT-    62.004 (meters)        (06/27/12)   ADJUSTED
 JV6971* NAD 83(2011) EPOCH   -  2010.00
 JV6971* NAVD 88 ORTHO HEIGHT -    93.740 (meters)      307.55  (feet) ADJUSTED
 JV6971  ______________________________________________________________________
 JV6971  GEOID HEIGHT    -        -31.752 (meters)                     GEOID18
 JV6971  NAD 83(2011) X  -  1,091,778.698 (meters)                     COMP
 JV6971  NAD 83(2011) Y  - -4,837,937.405 (meters)                     COMP
 JV6971  NAD 83(2011) Z  -  3,997,015.565 (meters)                     COMP
 JV6971  LAPLACE CORR    -          2.41  (seconds)                    DEFLEC18
 JV6971  DYNAMIC HEIGHT  -         93.691 (meters)      307.38  (feet) COMP
 JV6971  MODELED GRAVITY -    980,104.9   (mgal)                       NAVD 88
 JV6971
 JV6971  VERT ORDER      -  THIRD
 JV6971
 JV6971  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6971  Standards:
 JV6971         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6971            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6971  -------------------------------------------------------------------
 JV6971  NETWORK    1.78   3.51           0.71   0.73   1.79      0.26945776
 JV6971  -------------------------------------------------------------------
 JV6971  Click here for local accuracies and other accuracy information.
 JV6971
 JV6971.The horizontal coordinates were established by GPS observations
 JV6971.and adjusted by the National Geodetic Survey in June 2012.
 JV6971
 JV6971.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6971.been affixed to the stable North American tectonic plate. See 
 JV6971.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6971
 JV6971.The horizontal coordinates are valid at the epoch date displayed above
 JV6971.which is a decimal equivalence of Year/Month/Day.
 JV6971
 JV6971.The orthometric height was determined by differential leveling and
 JV6971.adjusted by the NATIONAL GEODETIC SURVEY
 JV6971.in September 2004.
 JV6971
 JV6971.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6971.GEOID18 height accuracy estimate available here.
 JV6971
 JV6971.Click photographs - Photos may exist for this station.
 JV6971
 JV6971.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6971
 JV6971.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6971
 JV6971.The ellipsoidal height was determined by GPS observations
 JV6971.and is referenced to NAD 83.
 JV6971
 JV6971.The dynamic height is computed by dividing the NAVD 88
 JV6971.geopotential number by the normal gravity value computed on the
 JV6971.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6971.degrees latitude (g = 980.6199 gals.).
 JV6971
 JV6971.The modeled gravity was interpolated from observed gravity values.
 JV6971
 JV6971. The following values were computed from the NAD 83(2011) position.
 JV6971
 JV6971;                    North         East     Units Scale Factor Converg.
 JV6971;SPC MD       -   154,041.832   375,498.648   MT  0.99995467   -0 10 39.6
 JV6971;SPC MD       -   505,385.58  1,231,948.48   sFT  0.99995467   -0 10 39.6
 JV6971;SPC VA N     - 2,154,697.137 3,605,332.757   MT  0.99997735   +0 45 34.2
 JV6971;SPC VA N     - 7,069,202.19 11,828,495.89   sFT  0.99997735   +0 45 34.2
 JV6971;UTM  18      - 4,325,252.718   302,444.685   MT  1.00008059   -1 26 20.1
 JV6971
 JV6971!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6971!SPC MD       -   0.99999027  x   0.99995467  =   0.99994494
 JV6971!SPC VA N     -   0.99999027  x   0.99997735  =   0.99996762
 JV6971!UTM  18      -   0.99999027  x   1.00008059  =   1.00007086
 JV6971
 JV6971:                Primary Azimuth Mark                     Grid Az
 JV6971:SPC MD       -  GPS 198                                  108 34 37.6
 JV6971:SPC VA N     -  GPS 198                                  107 38 23.8
 JV6971:UTM  18      -  GPS 198                                  109 50 18.1
 JV6971
 JV6971_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0244425252(NAD 83)
 JV6971
 JV6971|---------------------------------------------------------------------|
 JV6971| PID    Reference Object                     Distance      Geod. Az  |
 JV6971|                                                           dddmmss.s |
 JV6971| JV6972 GPS 198                             APPROX. 1.0 KM 1082358.0 |
 JV6971|---------------------------------------------------------------------|
 JV6971
 JV6971                          SUPERSEDED SURVEY CONTROL
 JV6971
 JV6971  NAD 83(2007)-  39 03 14.49916(N)    077 16 59.04535(W) AD(2002.00) 0
 JV6971  ELLIP H (02/10/07)   62.030  (m)                       GP(2002.00)    
 JV6971  ELLIP H (08/30/02)   62.105  (m)                       GP(       ) 4 2
 JV6971  NAD 83(1993)-  39 03 14.49878(N)    077 16 59.04544(W) AD(       ) 2
 JV6971  ELLIP H (11/14/94)   62.005  (m)                       GP(       ) 4 2
 JV6971  NAD 83(1991)-  39 03 14.49791(N)    077 16 59.04769(W) AD(       ) 2
 JV6971  NGVD 29 (09/10/92)   94.0    (m)  GEOID90  model used  GPS OBS        
 JV6971
 JV6971.Superseded values are not recommended for survey control.
 JV6971
 JV6971.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6971.See file dsdata.pdf to determine how the superseded data were derived.
 JV6971
 JV6971_MARKER: DD = SURVEY DISK
 JV6971_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6971_SP_SET: DRIVEN INTO GROUND
 JV6971_STAMPING: GPS 197 1991
 JV6971_MARK LOGO: VA-059
 JV6971_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6971_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6971_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6971+SATELLITE: SATELLITE OBSERVATIONS - November 24, 2014
 JV6971
 JV6971  HISTORY     - Date     Condition        Report By
 JV6971  HISTORY     - 1991     MONUMENTED       MSI
 JV6971  HISTORY     - 19920129 GOOD             MSI
 JV6971  HISTORY     - 20031222 GOOD             DEWDAV
 JV6971  HISTORY     - 20050405 GOOD             USPSQD
 JV6971  HISTORY     - 20141124 GOOD             BASE9
 JV6971
 JV6971                          STATION DESCRIPTION
 JV6971
 JV6971'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6971'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6971'4.7 MI (7.6 KM) NORTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6971'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6971'(S.R. 189), PROCEED NORTHWEST ALONG RIVER ROAD FOR 4.7 MI (7.6 KM) TO
 JV6971'THE INTERSECTION WITH RIVERS EDGE DRIVE.  TURN LEFT ONTO RIVERS EDGE
 JV6971'DRIVE AND TRAVEL 0.1 MI (0.2 KM) SOUTHWEST TO THE INTERSECTION WITH
 JV6971'MAIDSTONE LANE.  TURN LEFT ONTO MAIDSTONE LANE AND PROCEED 0.3 MI
 JV6971'(0.5 KM) SOUTHWEST TO THE INTERSECTION WITH CANAL VISTA COURT.  TURN
 JV6971'LEFT ONTO CANAL VISTA COURT AND TRAVEL 0.2 MI (0.3 KM) SOUTHWEST TO
 JV6971'THE STATION ON THE LEFT, OPPOSITE THE DRIVEWAY TO RESIDENCE NUMBER
 JV6971'13613.
 JV6971'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6971'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 197 1991.
 JV6971'THE STATION IS LOCATED ALONG THE SOUTH SIDE OF CANAL VISTA COURT,
 JV6971'72.5 FT (22.1 M) SOUTHWEST OF A FIRE HYDRANT, 70.2 FT (21.4 M)
 JV6971'NORTHEAST OF A SEWER MANHOLE, 69.2 FT (21.1 M) NORTH OF ANOTHER SEWER
 JV6971'MANHOLE, AND 15.2 FT (4.6 M) SOUTHEAST OF THE CENTER LINE OF CANAL
 JV6971'VISTA COURT.
 JV6971
 JV6971                          STATION RECOVERY (1992)
 JV6971
 JV6971'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6971'RECOVERED IN GOOD CONDITION.
 JV6971
 JV6971                          STATION RECOVERY (2003)
 JV6971
 JV6971'RECOVERY NOTE BY DEWBERRY DAVIS 2003 (KEC)
 JV6971'RECOVERED IN GOOD CONDITION.
 JV6971
 JV6971                          STATION RECOVERY (2005)
 JV6971
 JV6971'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6971'RECOVERED IN GOOD CONDITION.
 JV6971
 JV6971                          STATION RECOVERY (2014)
 JV6971
 JV6971'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2014 (DRD)
 JV6971'THE MARK IS 6.35 M (20.8 FT) EAST-NORTHEAST OF THE SUPPORT POST OF THE
 JV6971'MAILBOX FOR RESIDENCE 13620, 10.31 M (33.8 FT) SOUTH OF THE SUPPORT
 JV6971'POST OF THE MAILBOX FOR RESIDENCE 13613 AND RECESSED ABOUT 10 CM (4
 JV6971'INCHES).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6972 ***********************************************************************
 JV6972  DESIGNATION -  GPS 198
 JV6972  PID         -  JV6972
 JV6972  STATE/COUNTY-  MD/MONTGOMERY
 JV6972  COUNTRY     -  US
 JV6972  USGS QUAD   -  SENECA (2016)
 JV6972
 JV6972                         *CURRENT SURVEY CONTROL
 JV6972  ______________________________________________________________________
 JV6972* NAD 83(2011) POSITION- 39 03 04.30951(N) 077 16 19.76718(W)   ADJUSTED
 JV6972* NAD 83(2011) ELLIP HT-    66.465 (meters)        (06/27/12)   ADJUSTED
 JV6972* NAD 83(2011) EPOCH   -  2010.00
 JV6972* NAVD 88 ORTHO HEIGHT -    98.177 (meters)      322.10  (feet) ADJUSTED
 JV6972  ______________________________________________________________________
 JV6972  GEOID HEIGHT    -        -31.738 (meters)                     GEOID18
 JV6972  NAD 83(2011) X  -  1,092,744.312 (meters)                     COMP
 JV6972  NAD 83(2011) Y  - -4,837,925.905 (meters)                     COMP
 JV6972  NAD 83(2011) Z  -  3,996,774.358 (meters)                     COMP
 JV6972  LAPLACE CORR    -          1.98  (seconds)                    DEFLEC18
 JV6972  DYNAMIC HEIGHT  -         98.126 (meters)      321.94  (feet) COMP
 JV6972  MODELED GRAVITY -    980,106.9   (mgal)                       NAVD 88
 JV6972
 JV6972  VERT ORDER      -  THIRD
 JV6972
 JV6972  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6972  Standards:
 JV6972         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6972            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6972  -------------------------------------------------------------------
 JV6972  NETWORK    1.73   3.78           0.69   0.71   1.93      0.27312738
 JV6972  -------------------------------------------------------------------
 JV6972  Click here for local accuracies and other accuracy information.
 JV6972
 JV6972.The horizontal coordinates were established by GPS observations
 JV6972.and adjusted by the National Geodetic Survey in June 2012.
 JV6972
 JV6972.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6972.been affixed to the stable North American tectonic plate. See 
 JV6972.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6972
 JV6972.The horizontal coordinates are valid at the epoch date displayed above
 JV6972.which is a decimal equivalence of Year/Month/Day.
 JV6972
 JV6972.The orthometric height was determined by differential leveling and
 JV6972.adjusted by the NATIONAL GEODETIC SURVEY
 JV6972.in September 2004.
 JV6972
 JV6972.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6972.GEOID18 height accuracy estimate available here.
 JV6972
 JV6972.Click photographs - Photos may exist for this station.
 JV6972
 JV6972.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6972
 JV6972.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6972
 JV6972.The ellipsoidal height was determined by GPS observations
 JV6972.and is referenced to NAD 83.
 JV6972
 JV6972.The dynamic height is computed by dividing the NAVD 88
 JV6972.geopotential number by the normal gravity value computed on the
 JV6972.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6972.degrees latitude (g = 980.6199 gals.).
 JV6972
 JV6972.The modeled gravity was interpolated from observed gravity values.
 JV6972
 JV6972. The following values were computed from the NAD 83(2011) position.
 JV6972
 JV6972;                    North         East     Units Scale Factor Converg.
 JV6972;SPC MD       -   153,724.753   376,442.076   MT  0.99995452   -0 10 14.9
 JV6972;SPC MD       -   504,345.29  1,235,043.71   sFT  0.99995452   -0 10 14.9
 JV6972;SPC VA N     - 2,154,395.524 3,606,281.266   MT  0.99997698   +0 45 58.7
 JV6972;SPC VA N     - 7,068,212.65 11,831,607.79   sFT  0.99997698   +0 45 58.7
 JV6972;UTM  18      - 4,324,914.909   303,381.021   MT  1.00007604   -1 25 55.0
 JV6972
 JV6972!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6972!SPC MD       -   0.99998957  x   0.99995452  =   0.99994409
 JV6972!SPC VA N     -   0.99998957  x   0.99997698  =   0.99996655
 JV6972!UTM  18      -   0.99998957  x   1.00007604  =   1.00006561
 JV6972
 JV6972:                Primary Azimuth Mark                     Grid Az
 JV6972:SPC MD       -  GPS 199                                  098 12 17.6
 JV6972:SPC VA N     -  GPS 199                                  097 16 04.0
 JV6972:UTM  18      -  GPS 199                                  099 27 57.7
 JV6972
 JV6972_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0338124914(NAD 83)
 JV6972
 JV6972|---------------------------------------------------------------------|
 JV6972| PID    Reference Object                     Distance      Geod. Az  |
 JV6972|                                                           dddmmss.s |
 JV6972| JV6973 GPS 199                             APPROX. 1.0 KM 0980202.7 |
 JV6972|---------------------------------------------------------------------|
 JV6972
 JV6972                          SUPERSEDED SURVEY CONTROL
 JV6972
 JV6972  NAD 83(2007)-  39 03 04.30966(N)    077 16 19.76787(W) AD(2002.00) 0
 JV6972  ELLIP H (02/10/07)   66.491  (m)                       GP(2002.00)    
 JV6972  ELLIP H (08/30/02)   66.564  (m)                       GP(       ) 4 2
 JV6972  NAD 83(1993)-  39 03 04.30927(N)    077 16 19.76795(W) AD(       ) 2
 JV6972  ELLIP H (11/14/94)   66.465  (m)                       GP(       ) 4 2
 JV6972  NAD 83(1991)-  39 03 04.30841(N)    077 16 19.77019(W) AD(       ) 2
 JV6972  NGVD 29 (09/10/92)   98.5    (m)  GEOID90  model used  GPS OBS        
 JV6972
 JV6972.Superseded values are not recommended for survey control.
 JV6972
 JV6972.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6972.See file dsdata.pdf to determine how the superseded data were derived.
 JV6972
 JV6972_MARKER: DD = SURVEY DISK
 JV6972_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6972_SP_SET: DRIVEN INTO GROUND
 JV6972_STAMPING: GPS 198 1991
 JV6972_MARK LOGO: VA-059
 JV6972_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6972_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6972+STABILITY: SURFACE MOTION
 JV6972_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6972+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 JV6972
 JV6972  HISTORY     - Date     Condition        Report By
 JV6972  HISTORY     - 1991     MONUMENTED       MSI
 JV6972  HISTORY     - 19920129 GOOD             MSI
 JV6972  HISTORY     - 20040412 MARK NOT FOUND   VA-059
 JV6972
 JV6972                          STATION DESCRIPTION
 JV6972
 JV6972'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6972'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6972'3.9 MI (6.3 KM) NORTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6972'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6972'(S.R. 189), PROCEED NORTHWEST ALONG RIVER ROAD FOR 3.9 MI (6.3 KM) TO
 JV6972'THE STATION ON THE LEFT IN A GRASSY MEDIAN BETWEEN THE GRAVEL
 JV6972'ENTRANCES TO MERRY-GO-ROUND FARM SUBDIVISION.
 JV6972'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6972'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 198 1991.
 JV6972'THE STATION IS LOCATED BETWEEN THE NORTHERN AND THE CENTER GRAVEL
 JV6972'ENTRANCES, 142.9 FT (43.6 M) SOUTHEAST OF PEPCO POLE NUMBER
 JV6972'22443-5276, 127.6 FT (38.9 M) NORTH OF PEPCO POLE NUMBER 722443-6248,
 JV6972'125.6 FT (38.3 M) NORTHWEST OF AN UNNUMBERED POWER POLE, AND 24.3  FT
 JV6972'(7.4 M) SOUTHWEST OF THE CENTER LINE OF RIVER ROAD.
 JV6972
 JV6972                          STATION RECOVERY (1992)
 JV6972
 JV6972'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6972'RECOVERED IN GOOD CONDITION.
 JV6972
 JV6972                          STATION RECOVERY (2004)
 JV6972
 JV6972'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2004 (DRJ)
 JV6972'ENTRANCE ROAD HAS CHANGED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6973 ***********************************************************************
 JV6973  DESIGNATION -  GPS 199
 JV6973  PID         -  JV6973
 JV6973  STATE/COUNTY-  MD/MONTGOMERY
 JV6973  COUNTRY     -  US
 JV6973  USGS QUAD   -  SENECA (2016)
 JV6973
 JV6973                         *CURRENT SURVEY CONTROL
 JV6973  ______________________________________________________________________
 JV6973* NAD 83(2011) POSITION- 39 02 59.77102(N) 077 15 38.54913(W)   ADJUSTED
 JV6973* NAD 83(2011) ELLIP HT-    44.675 (meters)        (06/27/12)   ADJUSTED
 JV6973* NAD 83(2011) EPOCH   -  2010.00
 JV6973* NAVD 88 ORTHO HEIGHT -    76.4   (meters)      251.    (feet) VERTCON3
 JV6973  ______________________________________________________________________
 JV6973  GEOID HEIGHT    -        -31.727 (meters)                     GEOID18
 JV6973  NAD 83(2011) X  -  1,093,726.769 (meters)                     COMP
 JV6973  NAD 83(2011) Y  - -4,837,776.944 (meters)                     COMP
 JV6973  NAD 83(2011) Z  -  3,996,651.939 (meters)                     COMP
 JV6973  LAPLACE CORR    -          1.66  (seconds)                    DEFLEC18
 JV6973
 JV6973  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6973  Standards:
 JV6973         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6973            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6973  -------------------------------------------------------------------
 JV6973  NETWORK    1.63   3.82           0.65   0.67   1.95      0.25766083
 JV6973  -------------------------------------------------------------------
 JV6973  Click here for local accuracies and other accuracy information.
 JV6973
 JV6973.The horizontal coordinates were established by GPS observations
 JV6973.and adjusted by the National Geodetic Survey in June 2012.
 JV6973
 JV6973.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6973.been affixed to the stable North American tectonic plate. See 
 JV6973.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6973
 JV6973.The horizontal coordinates are valid at the epoch date displayed above
 JV6973.which is a decimal equivalence of Year/Month/Day.
 JV6973
 JV6973.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6973.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6973
 JV6973.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6973.GEOID18 height accuracy estimate available here.
 JV6973
 JV6973.Click photographs - Photos may exist for this station.
 JV6973
 JV6973.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6973
 JV6973.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6973
 JV6973.The ellipsoidal height was determined by GPS observations
 JV6973.and is referenced to NAD 83.
 JV6973
 JV6973. The following values were computed from the NAD 83(2011) position.
 JV6973
 JV6973;                    North         East     Units Scale Factor Converg.
 JV6973;SPC MD       -   153,581.910   377,432.737   MT  0.99995445   -0 09 49.1
 JV6973;SPC MD       -   503,876.65  1,238,293.90   sFT  0.99995445   -0 09 49.1
 JV6973;SPC VA N     - 2,154,268.899 3,607,274.153   MT  0.99997681   +0 46 24.5
 JV6973;SPC VA N     - 7,067,797.21 11,834,865.28   sFT  0.99997681   +0 46 24.5
 JV6973;UTM  18      - 4,324,750.278   304,368.416   MT  1.00007127   -1 25 28.9
 JV6973
 JV6973!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6973!SPC MD       -   0.99999299  x   0.99995445  =   0.99994744
 JV6973!SPC VA N     -   0.99999299  x   0.99997681  =   0.99996980
 JV6973!UTM  18      -   0.99999299  x   1.00007127  =   1.00006426
 JV6973
 JV6973:                Primary Azimuth Mark                     Grid Az
 JV6973:SPC MD       -  GPS 198                                  278 12 17.7
 JV6973:SPC VA N     -  GPS 198                                  277 16 04.1
 JV6973:UTM  18      -  GPS 198                                  279 27 57.5
 JV6973
 JV6973_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0436824750(NAD 83)
 JV6973
 JV6973|---------------------------------------------------------------------|
 JV6973| PID    Reference Object                     Distance      Geod. Az  |
 JV6973|                                                           dddmmss.s |
 JV6973| JV6972 GPS 198                             APPROX. 1.0 KM 2780228.6 |
 JV6973|---------------------------------------------------------------------|
 JV6973
 JV6973                          SUPERSEDED SURVEY CONTROL
 JV6973
 JV6973  NAD 83(2007)-  39 02 59.77117(N)    077 15 38.54986(W) AD(2002.00) 0
 JV6973  ELLIP H (02/10/07)   44.699  (m)                       GP(2002.00)    
 JV6973  ELLIP H (08/30/02)   44.770  (m)                       GP(       ) 4 2
 JV6973  NAD 83(1993)-  39 02 59.77079(N)    077 15 38.54995(W) AD(       ) 2
 JV6973  ELLIP H (11/14/94)   44.671  (m)                       GP(       ) 4 2
 JV6973  NAD 83(1991)-  39 02 59.76994(N)    077 15 38.55217(W) AD(       ) 2
 JV6973  NGVD 29 (09/10/92)   76.7    (m)  GEOID90  model used  GPS OBS        
 JV6973
 JV6973.Superseded values are not recommended for survey control.
 JV6973
 JV6973.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6973.See file dsdata.pdf to determine how the superseded data were derived.
 JV6973
 JV6973_MARKER: DD = SURVEY DISK
 JV6973_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6973_SP_SET: DRIVEN INTO GROUND
 JV6973_STAMPING: GPS 199 1991
 JV6973_MARK LOGO: VA-059
 JV6973_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6973_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6973+STABILITY: SURFACE MOTION
 JV6973_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6973+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 JV6973
 JV6973  HISTORY     - Date     Condition        Report By
 JV6973  HISTORY     - 1991     MONUMENTED       MSI
 JV6973  HISTORY     - 19920129 GOOD             MSI
 JV6973  HISTORY     - 20031204 GOOD             VA-059
 JV6973
 JV6973                          STATION DESCRIPTION
 JV6973
 JV6973'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6973'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6973'3.7 MI (6.0 KM) NORTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6973'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6973'(S.R. 189), PROCEED NORTHWEST ALONG RIVER ROAD FOR 3.3 MI (5.3 KM) TO
 JV6973'THE INTERSECTION WITH STONEY CREEK ROAD.  TURN RIGHT ONTO STONEY
 JV6973'CREEK ROAD AND TRAVEL 0.4 MI (0.6 KM) NORTH TO THE INTERSECTION WITH
 JV6973'STONEY CREEK WAY.  TURN RIGHT ONTO STONEY CREEK WAY AND PROCEED 75 FT
 JV6973'(22.9 M) NORTHEAST TO THE STATION ON THE RIGHT.
 JV6973'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6973'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 199 1991.
 JV6973'THE STATION IS LOCATED IN A GRASSY AREA BETWEEN STONEY CREEK WAY AND
 JV6973'THE TOP OF A BANK, 156 FT (47.5 M) SOUTHEAST OF THE CENTER LINE OF
 JV6973'STONEY CREEK WAY, 90.5 FT (27.6 M) NORTHEAST OF THE CENTER LINE OF
 JV6973'STONEY CREEK ROAD, 58.0 FT (17.7 M) SOUTHEAST OF A STREET AND STOP
 JV6973'SIGN, AND 50.6 FT (15.4 M) EAST OF A NO OUTLET SIGN.
 JV6973
 JV6973                          STATION RECOVERY (1992)
 JV6973
 JV6973'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6973'RECOVERED IN GOOD CONDITION.
 JV6973
 JV6973                          STATION RECOVERY (2003)
 JV6973
 JV6973'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2003 (DRJ)
 JV6973'GPS-PROBABLY ONLY IN WINTER
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7174 ***********************************************************************
 JV7174  DESIGNATION -  GPS 20 CF
 JV7174  PID         -  JV7174
 JV7174  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7174  COUNTRY     -  US
 JV7174  USGS QUAD   -  BELTSVILLE (2016)
 JV7174
 JV7174                         *CURRENT SURVEY CONTROL
 JV7174  ______________________________________________________________________
 JV7174* NAD 83(2011) POSITION- 39 01 39.52530(N) 076 52 36.19551(W)   ADJUSTED
 JV7174* NAD 83(2011) ELLIP HT-     1.341 (meters)        (06/27/12)   ADJUSTED
 JV7174* NAD 83(2011) EPOCH   -  2010.00
 JV7174* NAVD 88 ORTHO HEIGHT -    33.6   (meters)      110.    (feet) GPS OBS
 JV7174  ______________________________________________________________________
 JV7174  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7174  GEOID HEIGHT    -        -32.610 (meters)                     GEOID93
 JV7174  GEOID HEIGHT    -        -32.241 (meters)                     GEOID18
 JV7174  NAD 83(2011) X  -  1,126,470.208 (meters)                     COMP
 JV7174  NAD 83(2011) Y  - -4,831,823.516 (meters)                     COMP
 JV7174  NAD 83(2011) Z  -  3,994,702.565 (meters)                     COMP
 JV7174  LAPLACE CORR    -         -4.92  (seconds)                    DEFLEC18
 JV7174
 JV7174  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7174  Standards:
 JV7174         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7174            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7174  -------------------------------------------------------------------
 JV7174  NETWORK    1.21   2.55           0.51   0.48   1.30     -0.11042802
 JV7174  -------------------------------------------------------------------
 JV7174  Click here for local accuracies and other accuracy information.
 JV7174
 JV7174.The horizontal coordinates were established by GPS observations
 JV7174.and adjusted by the National Geodetic Survey in June 2012.
 JV7174
 JV7174.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7174.been affixed to the stable North American tectonic plate. See 
 JV7174.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7174
 JV7174.The horizontal coordinates are valid at the epoch date displayed above
 JV7174.which is a decimal equivalence of Year/Month/Day.
 JV7174
 JV7174.The orthometric height was determined by GPS observations and a
 JV7174.high-resolution geoid model.
 JV7174
 JV7174.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7174.GEOID18 height accuracy estimate available here.
 JV7174
 JV7174.Click photographs - Photos may exist for this station.
 JV7174
 JV7174.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7174
 JV7174.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7174
 JV7174.The ellipsoidal height was determined by GPS observations
 JV7174.and is referenced to NAD 83.
 JV7174
 JV7174. The following values were computed from the NAD 83(2011) position.
 JV7174
 JV7174;                    North         East     Units Scale Factor Converg.
 JV7174;SPC MD       -   151,082.403   410,674.560   MT  0.99995335   +0 04 38.5
 JV7174;SPC MD       -   495,676.18  1,347,354.79   sFT  0.99995335   +0 04 38.5
 JV7174;UTM  18      - 4,321,520.153   337,548.619   MT  0.99992496   -1 10 55.3
 JV7174
 JV7174!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7174!SPC MD       -   0.99999979  x   0.99995335  =   0.99995314
 JV7174!UTM  18      -   0.99999979  x   0.99992496  =   0.99992475
 JV7174
 JV7174_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3754821520(NAD 83)
 JV7174
 JV7174                          SUPERSEDED SURVEY CONTROL
 JV7174
 JV7174  NAD 83(2007)-  39 01 39.52555(N)    076 52 36.19629(W) AD(2002.00) 0
 JV7174  ELLIP H (02/10/07)    1.366  (m)                       GP(2002.00)    
 JV7174  ELLIP H (08/30/02)    1.381  (m)                       GP(       ) 4 2
 JV7174  ELLIP H (09/09/94)    1.300  (m)                       GP(       ) 4 1
 JV7174  NAD 83(1991)-  39 01 39.52547(N)    076 52 36.19638(W) AD(       ) 1
 JV7174
 JV7174.Superseded values are not recommended for survey control.
 JV7174
 JV7174.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7174.See file dsdata.pdf to determine how the superseded data were derived.
 JV7174
 JV7174_MARKER: DD = SURVEY DISK
 JV7174_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7174_STAMPING: GPS 20 CF
 JV7174_MARK LOGO: WSSC
 JV7174_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7174_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7174+STABILITY: SURFACE MOTION
 JV7174_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7174+SATELLITE: SATELLITE OBSERVATIONS - March 05, 2010
 JV7174
 JV7174  HISTORY     - Date     Condition        Report By
 JV7174  HISTORY     - 1992     MONUMENTED       NGS
 JV7174  HISTORY     - 19930415 GOOD
 JV7174  HISTORY     - 20000512 GOOD             GEOMET
 JV7174  HISTORY     - 20100305 GOOD             NGS
 JV7174
 JV7174                          STATION DESCRIPTION
 JV7174
 JV7174'DESCRIBED BY NATIONAL GEODETIC SURVEY 1992
 JV7174'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND,
 JV7174'APPROXIMATELY 2.8 MI (4.5 KM) NORTHEAST OF COLLEGE PARK.
 JV7174'TO REACH THE STATION FORM THE INTERSECTION OF EDMONSTON ROAD (S.R.
 JV7174'201) AND POWDER MILL ROAD, PROCEED EAST ON POWDER MILL ROAD FOR 1.3
 JV7174'MI (2.1 KM) TO THE INTERSECTION WITH RESEARCH ROAD.  TURN RIGHT AND
 JV7174'PROCEED SOUTH ON RESEARCH ROAD FOR 0.3 MI (0.5 KM) TO THE
 JV7174'INTERSECTION WITH BEAVER DAM ROAD, AND THE STATION ON THE LEFT.
 JV7174'THE STATION IS A SURVEY DISK SET IN A MONUMENT CASE, AND STAMPED GPS
 JV7174'20 CF.  THE DISK IS LOCATED 62.5 FT (19.1 M) EAST OF THE CENTERLINE
 JV7174'OF RESEARCH ROAD, 50.0 FT (15.2 M) SOUTH OF THE CENTERLINE OF BEAVER
 JV7174'DAM ROAD, AND 25.5  FT (7.8 M) NORTHWEST OF A GATE AND FENCE CORNER.
 JV7174
 JV7174                          STATION RECOVERY (1993)
 JV7174
 JV7174'RECOVERED 1993
 JV7174'RECOVERED IN GOOD CONDITION.
 JV7174
 JV7174                          STATION RECOVERY (2000)
 JV7174
 JV7174'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (CEN)
 JV7174'GOOD CONDITION.
 JV7174
 JV7174                          STATION RECOVERY (2010)
 JV7174
 JV7174'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV7174'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6974 ***********************************************************************
 JV6974  DESIGNATION -  GPS 200
 JV6974  PID         -  JV6974
 JV6974  STATE/COUNTY-  MD/MONTGOMERY
 JV6974  COUNTRY     -  US
 JV6974  USGS QUAD   -  SENECA (2016)
 JV6974
 JV6974                         *CURRENT SURVEY CONTROL
 JV6974  ______________________________________________________________________
 JV6974* NAD 83(2011) POSITION- 39 02 24.74522(N) 077 15 03.13108(W)   ADJUSTED
 JV6974* NAD 83(2011) ELLIP HT-    45.569 (meters)        (06/27/12)   ADJUSTED
 JV6974* NAD 83(2011) EPOCH   -  2010.00
 JV6974* NAVD 88 ORTHO HEIGHT -    77.240 (meters)      253.41  (feet) ADJUSTED
 JV6974  ______________________________________________________________________
 JV6974  GEOID HEIGHT    -        -31.717 (meters)                     GEOID18
 JV6974  NAD 83(2011) X  -  1,094,707.763 (meters)                     COMP
 JV6974  NAD 83(2011) Y  - -4,838,253.376 (meters)                     COMP
 JV6974  NAD 83(2011) Z  -  3,995,813.620 (meters)                     COMP
 JV6974  LAPLACE CORR    -          1.38  (seconds)                    DEFLEC18
 JV6974  DYNAMIC HEIGHT  -         77.200 (meters)      253.28  (feet) COMP
 JV6974  MODELED GRAVITY -    980,110.1   (mgal)                       NAVD 88
 JV6974
 JV6974  VERT ORDER      -  THIRD
 JV6974
 JV6974  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6974  Standards:
 JV6974         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6974            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6974  -------------------------------------------------------------------
 JV6974  NETWORK    1.97   4.59           0.85   0.75   2.34      0.10323982
 JV6974  -------------------------------------------------------------------
 JV6974  Click here for local accuracies and other accuracy information.
 JV6974
 JV6974.The horizontal coordinates were established by GPS observations
 JV6974.and adjusted by the National Geodetic Survey in June 2012.
 JV6974
 JV6974.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6974.been affixed to the stable North American tectonic plate. See 
 JV6974.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6974
 JV6974.The horizontal coordinates are valid at the epoch date displayed above
 JV6974.which is a decimal equivalence of Year/Month/Day.
 JV6974
 JV6974.The orthometric height was determined by differential leveling and
 JV6974.adjusted by the NATIONAL GEODETIC SURVEY
 JV6974.in September 2004.
 JV6974
 JV6974.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6974.GEOID18 height accuracy estimate available here.
 JV6974
 JV6974.Click photographs - Photos may exist for this station.
 JV6974
 JV6974.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6974
 JV6974.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6974
 JV6974.The ellipsoidal height was determined by GPS observations
 JV6974.and is referenced to NAD 83.
 JV6974
 JV6974.The dynamic height is computed by dividing the NAVD 88
 JV6974.geopotential number by the normal gravity value computed on the
 JV6974.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6974.degrees latitude (g = 980.6199 gals.).
 JV6974
 JV6974.The modeled gravity was interpolated from observed gravity values.
 JV6974
 JV6974. The following values were computed from the NAD 83(2011) position.
 JV6974
 JV6974;                    North         East     Units Scale Factor Converg.
 JV6974;SPC MD       -   152,499.456   378,281.388   MT  0.99995395   -0 09 26.8
 JV6974;SPC MD       -   500,325.30  1,241,078.19   sFT  0.99995395   -0 09 26.8
 JV6974;SPC VA N     - 2,153,200.446 3,608,140.413   MT  0.99997555   +0 46 46.6
 JV6974;SPC VA N     - 7,064,291.80 11,837,707.34   sFT  0.99997555   +0 46 46.6
 JV6974;UTM  18      - 4,323,649.285   305,193.137   MT  1.00006731   -1 25 05.5
 JV6974
 JV6974!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6974!SPC MD       -   0.99999285  x   0.99995395  =   0.99994680
 JV6974!SPC VA N     -   0.99999285  x   0.99997555  =   0.99996840
 JV6974!UTM  18      -   0.99999285  x   1.00006731  =   1.00006016
 JV6974
 JV6974:                Primary Azimuth Mark                     Grid Az
 JV6974:SPC MD       -  GPS 201                                  121 24 10.3
 JV6974:SPC VA N     -  GPS 201                                  120 27 56.9
 JV6974:UTM  18      -  GPS 201                                  122 39 49.0
 JV6974
 JV6974_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0519323649(NAD 83)
 JV6974
 JV6974|---------------------------------------------------------------------|
 JV6974| PID    Reference Object                     Distance      Geod. Az  |
 JV6974|                                                           dddmmss.s |
 JV6974| JV6975 GPS 201                             APPROX. 1.2 KM 1211443.5 |
 JV6974|---------------------------------------------------------------------|
 JV6974
 JV6974                          SUPERSEDED SURVEY CONTROL
 JV6974
 JV6974  NAD 83(2007)-  39 02 24.74529(N)    077 15 03.13200(W) AD(2002.00) 0
 JV6974  ELLIP H (02/10/07)   45.594  (m)                       GP(2002.00)    
 JV6974  ELLIP H (08/30/02)   45.649  (m)                       GP(       ) 4 2
 JV6974  NAD 83(1993)-  39 02 24.74497(N)    077 15 03.13216(W) AD(       ) 2
 JV6974  ELLIP H (11/14/94)   45.562  (m)                       GP(       ) 4 2
 JV6974  NAD 83(1991)-  39 02 24.74420(N)    077 15 03.13422(W) AD(       ) 2
 JV6974  NGVD 29 (09/10/92)   77.6    (m)  GEOID90  model used  GPS OBS        
 JV6974
 JV6974.Superseded values are not recommended for survey control.
 JV6974
 JV6974.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6974.See file dsdata.pdf to determine how the superseded data were derived.
 JV6974
 JV6974_MARKER: DD = SURVEY DISK
 JV6974_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6974_SP_SET: DRIVEN INTO GROUND
 JV6974_STAMPING: GPS 200 1991
 JV6974_MARK LOGO: VA-059
 JV6974_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6974_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6974+STABILITY: SURFACE MOTION
 JV6974_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6974+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 JV6974
 JV6974  HISTORY     - Date     Condition        Report By
 JV6974  HISTORY     - 1991     MONUMENTED       MSI
 JV6974  HISTORY     - 19920129 GOOD             MSI
 JV6974  HISTORY     - 20041112 MARK NOT FOUND   VA-059
 JV6974
 JV6974                          STATION DESCRIPTION
 JV6974
 JV6974'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6974'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6974'2.7 MI (4.3 KM) NORTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6974'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6974'(S.R. 189), PROCEED NORTHWEST ALONG RIVER ROAD FOR 2.7 MI (4.3 KM) TO
 JV6974'THE STATION ON THE RIGHT,  APPROXIMATELY 200 FT (61.0 M) SOUTHEAST OF
 JV6974'RESIDENCE NUMBER 12201.
 JV6974'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6974'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 200 1991.
 JV6974'THE STATION IS LOCATED NORTHEAST RIVER ROAD OPPOSITE THE WSSC
 JV6974'FILTRATION PLANT TRUCK ENTRANCE, 122.6 FT (37.4 M) SOUTHEAST OF A 2.0
 JV6974'FT (0.6 M) PINE TREE, 110.2 FT (33.6 M) SOUTHEAST OF A PK NAIL SET
 JV6974'IN THE CENTER LINE OF THE ASPHALT DRIVEWAY TO RESIDENCE NUMBER 12201,
 JV6974'98.0 FT (29.9 M) SOUTHEAST OF A 1.0 FT (0.3 M) CEDAR TREE EAST OF THE
 JV6974'ASPHALT DRIVEWAY, APPROXIMATELY 17.0 FT (5.2 M) NORTHWEST OF THE EDGE
 JV6974'OF AN EMBANKMENT, AND APPROXIMATELY 10.0 FT (3.0 M) NORTHEAST OF
 JV6974'ANOTHER POINT ALONG THE EDGE OF THE EMBANKMENT.
 JV6974
 JV6974                          STATION RECOVERY (1992)
 JV6974
 JV6974'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6974'RECOVERED IN GOOD CONDITION.
 JV6974
 JV6974                          STATION RECOVERY (2004)
 JV6974
 JV6974'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2004 (DRJ)
 JV6974'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6975 ***********************************************************************
 JV6975  DESIGNATION -  GPS 201
 JV6975  PID         -  JV6975
 JV6975  STATE/COUNTY-  MD/MONTGOMERY
 JV6975  COUNTRY     -  US
 JV6975  USGS QUAD   -  ROCKVILLE (2016)
 JV6975
 JV6975                         *CURRENT SURVEY CONTROL
 JV6975  ______________________________________________________________________
 JV6975* NAD 83(2011) POSITION- 39 02 04.13700(N) 077 14 19.58368(W)   ADJUSTED
 JV6975* NAD 83(2011) ELLIP HT-    57.746 (meters)        (06/27/12)   ADJUSTED
 JV6975* NAD 83(2011) EPOCH   -  2010.00
 JV6975* NAVD 88 ORTHO HEIGHT -    89.422 (meters)      293.38  (feet) ADJUSTED
 JV6975  ______________________________________________________________________
 JV6975  GEOID HEIGHT    -        -31.710 (meters)                     GEOID18
 JV6975  NAD 83(2011) X  -  1,095,819.712 (meters)                     COMP
 JV6975  NAD 83(2011) Y  - -4,838,421.754 (meters)                     COMP
 JV6975  NAD 83(2011) Z  -  3,995,327.660 (meters)                     COMP
 JV6975  LAPLACE CORR    -          0.94  (seconds)                    DEFLEC18
 JV6975  DYNAMIC HEIGHT  -         89.375 (meters)      293.22  (feet) COMP
 JV6975  MODELED GRAVITY -    980,110.8   (mgal)                       NAVD 88
 JV6975
 JV6975  VERT ORDER      -  THIRD
 JV6975
 JV6975  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6975  Standards:
 JV6975         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6975            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6975  -------------------------------------------------------------------
 JV6975  NETWORK    1.87   4.33           0.82   0.70   2.21      0.10734783
 JV6975  -------------------------------------------------------------------
 JV6975  Click here for local accuracies and other accuracy information.
 JV6975
 JV6975.The horizontal coordinates were established by GPS observations
 JV6975.and adjusted by the National Geodetic Survey in June 2012.
 JV6975
 JV6975.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6975.been affixed to the stable North American tectonic plate. See 
 JV6975.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6975
 JV6975.The horizontal coordinates are valid at the epoch date displayed above
 JV6975.which is a decimal equivalence of Year/Month/Day.
 JV6975
 JV6975.The orthometric height was determined by differential leveling and
 JV6975.adjusted by the NATIONAL GEODETIC SURVEY
 JV6975.in September 2004.
 JV6975
 JV6975.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6975.GEOID18 height accuracy estimate available here.
 JV6975
 JV6975.Click photographs - Photos may exist for this station.
 JV6975
 JV6975.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6975
 JV6975.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6975
 JV6975.The ellipsoidal height was determined by GPS observations
 JV6975.and is referenced to NAD 83.
 JV6975
 JV6975.The dynamic height is computed by dividing the NAVD 88
 JV6975.geopotential number by the normal gravity value computed on the
 JV6975.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6975.degrees latitude (g = 980.6199 gals.).
 JV6975
 JV6975.The modeled gravity was interpolated from observed gravity values.
 JV6975
 JV6975. The following values were computed from the NAD 83(2011) position.
 JV6975
 JV6975;                    North         East     Units Scale Factor Converg.
 JV6975;SPC MD       -   151,861.167   379,326.957   MT  0.99995367   -0 08 59.5
 JV6975;SPC MD       -   498,231.18  1,244,508.52   sFT  0.99995367   -0 08 59.5
 JV6975;SPC VA N     - 2,152,579.327 3,609,196.303   MT  0.99997481   +0 47 13.8
 JV6975;SPC VA N     - 7,062,254.01 11,841,171.54   sFT  0.99997481   +0 47 13.8
 JV6975;UTM  18      - 4,322,988.073   306,224.525   MT  1.00006237   -1 24 37.4
 JV6975
 JV6975!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6975!SPC MD       -   0.99999094  x   0.99995367  =   0.99994461
 JV6975!SPC VA N     -   0.99999094  x   0.99997481  =   0.99996575
 JV6975!UTM  18      -   0.99999094  x   1.00006237  =   1.00005331
 JV6975
 JV6975:                Primary Azimuth Mark                     Grid Az
 JV6975:SPC MD       -  GPS 200                                  301 24 10.4
 JV6975:SPC VA N     -  GPS 200                                  300 27 57.1
 JV6975:UTM  18      -  GPS 200                                  302 39 48.3
 JV6975
 JV6975_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0622422988(NAD 83)
 JV6975
 JV6975|---------------------------------------------------------------------|
 JV6975| PID    Reference Object                     Distance      Geod. Az  |
 JV6975|                                                           dddmmss.s |
 JV6975| JV6974 GPS 200                             APPROX. 1.2 KM 3011510.9 |
 JV6975|---------------------------------------------------------------------|
 JV6975
 JV6975                          SUPERSEDED SURVEY CONTROL
 JV6975
 JV6975  NAD 83(2007)-  39 02 04.13703(N)    077 14 19.58462(W) AD(2002.00) 0
 JV6975  ELLIP H (02/10/07)   57.768  (m)                       GP(2002.00)    
 JV6975  ELLIP H (08/30/02)   57.825  (m)                       GP(       ) 4 2
 JV6975  ELLIP H (04/01/98)   57.737  (m)                       GP(       ) 4 1
 JV6975  NAD 83(1993)-  39 02 04.13675(N)    077 14 19.58478(W) AD(       ) 2
 JV6975  ELLIP H (11/14/94)   57.739  (m)                       GP(       ) 4 2
 JV6975  NAD 83(1991)-  39 02 04.13597(N)    077 14 19.58687(W) AD(       ) 2
 JV6975  NGVD 29 (09/10/92)   89.7    (m)  GEOID90  model used  GPS OBS        
 JV6975
 JV6975.Superseded values are not recommended for survey control.
 JV6975
 JV6975.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6975.See file dsdata.pdf to determine how the superseded data were derived.
 JV6975
 JV6975_MARKER: DD = SURVEY DISK
 JV6975_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6975_SP_SET: DRIVEN INTO GROUND
 JV6975_STAMPING: GPS 201 1991
 JV6975_MARK LOGO: VA-059
 JV6975_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6975_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6975+STABILITY: SURFACE MOTION
 JV6975_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6975+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 JV6975
 JV6975  HISTORY     - Date     Condition        Report By
 JV6975  HISTORY     - 1991     MONUMENTED       MSI
 JV6975  HISTORY     - 19920129 GOOD             MSI
 JV6975  HISTORY     - 20041112 MARK NOT FOUND   VA-059
 JV6975
 JV6975                          STATION DESCRIPTION
 JV6975
 JV6975'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6975'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6975'2.0 MI (3.2 KM) NORTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6975'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6975'(S.R. 189), PROCEED NORTHWEST ALONG RIVER ROAD FOR 2.0 MI (3.2 KM) TO
 JV6975'THE INTERSECTION WITH SWANS LOCK TERRACE.  TURN RIGHT  ONTO SWANS
 JV6975'LOCK TERRACE AND TRAVEL SOUTHEAST FOR 0.1 MI (0.2 KM) TO STATION ON
 JV6975'THE RIGHT IN THE GRASS STRIP BETWEEN SWANS LOCK TERRACE  AND RIVER
 JV6975'ROAD.
 JV6975'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6975'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 201 1991.
 JV6975'THE STATION IS LOCATED NORTHEAST OF SWANS LOCK TERRACE, 96.7 FT
 JV6975'(29.5 M) NORTH OF A FIRE HYDRANT, 70.7 FT (21.5 M) EAST OF THE
 JV6975'ASPHALT CORNER FORMED BY THE SOUTHERN EDGE OF SWANS LOCK TERRACE AND
 JV6975'THE SOUTHEASTERN EDGE OF THE APRON AT THE WESTERN END OF SWANS LOCK
 JV6975'TERRACE, 60.3 FT (18.4 M) SOUTHEAST OF THE ASPHALT CORNER FORMED BY
 JV6975'THE NORTHERN EDGE OF SWANS LOCK TERRACE AND THE NORTHEASTERN EDGE OF
 JV6975'THE APRON AT THE WESTERN END OF SWANS LOCK TERRACE, AND 47.0 FT
 JV6975'(14.3 M) SOUTHWEST OF THE SOUTHEASTERN END OF A WOOD POST AND WIRE
 JV6975'FENCE.
 JV6975
 JV6975                          STATION RECOVERY (1992)
 JV6975
 JV6975'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6975'RECOVERED IN GOOD CONDITION.
 JV6975
 JV6975                          STATION RECOVERY (2004)
 JV6975
 JV6975'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2004 (DRJ)
 JV6975'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6976 ***********************************************************************
 JV6976  DESIGNATION -  GPS 202
 JV6976  PID         -  JV6976
 JV6976  STATE/COUNTY-  MD/MONTGOMERY
 JV6976  COUNTRY     -  US
 JV6976  USGS QUAD   -  ROCKVILLE (2016)
 JV6976
 JV6976                         *CURRENT SURVEY CONTROL
 JV6976  ______________________________________________________________________
 JV6976* NAD 83(2011) POSITION- 39 01 04.42362(N) 077 13 50.95433(W)   ADJUSTED
 JV6976* NAD 83(2011) ELLIP HT-    79.919 (meters)        (06/27/12)   ADJUSTED
 JV6976* NAD 83(2011) EPOCH   -  2010.00
 JV6976* NAVD 88 ORTHO HEIGHT -   111.7   (meters)      366.    (feet) VERTCON3
 JV6976  ______________________________________________________________________
 JV6976  GEOID HEIGHT    -        -31.711 (meters)                     GEOID18
 JV6976  NAD 83(2011) X  -  1,096,751.357 (meters)                     COMP
 JV6976  NAD 83(2011) Y  - -4,839,417.245 (meters)                     COMP
 JV6976  NAD 83(2011) Z  -  3,993,911.078 (meters)                     COMP
 JV6976  LAPLACE CORR    -          0.17  (seconds)                    DEFLEC18
 JV6976
 JV6976  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6976  Standards:
 JV6976         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6976            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6976  -------------------------------------------------------------------
 JV6976  NETWORK    1.63   3.78           0.71   0.62   1.93      0.10334099
 JV6976  -------------------------------------------------------------------
 JV6976  Click here for local accuracies and other accuracy information.
 JV6976
 JV6976.The horizontal coordinates were established by GPS observations
 JV6976.and adjusted by the National Geodetic Survey in June 2012.
 JV6976
 JV6976.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6976.been affixed to the stable North American tectonic plate. See 
 JV6976.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6976
 JV6976.The horizontal coordinates are valid at the epoch date displayed above
 JV6976.which is a decimal equivalence of Year/Month/Day.
 JV6976
 JV6976.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6976.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6976
 JV6976.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6976.GEOID18 height accuracy estimate available here.
 JV6976
 JV6976.Click photographs - Photos may exist for this station.
 JV6976
 JV6976.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6976
 JV6976.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6976
 JV6976.The ellipsoidal height was determined by GPS observations
 JV6976.and is referenced to NAD 83.
 JV6976
 JV6976. The following values were computed from the NAD 83(2011) position.
 JV6976
 JV6976;                    North         East     Units Scale Factor Converg.
 JV6976;SPC MD       -   150,018.060   380,010.838   MT  0.99995291   -0 08 41.5
 JV6976;SPC MD       -   492,184.25  1,246,752.22   sFT  0.99995291   -0 08 41.5
 JV6976;SPC VA N     - 2,150,747.613 3,609,910.247   MT  0.99997275   +0 47 31.6
 JV6976;SPC VA N     - 7,056,244.46 11,843,513.87   sFT  0.99997275   +0 47 31.6
 JV6976;UTM  18      - 4,321,130.171   306,867.771   MT  1.00005931   -1 24 17.6
 JV6976
 JV6976!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6976!SPC MD       -   0.99998746  x   0.99995291  =   0.99994037
 JV6976!SPC VA N     -   0.99998746  x   0.99997275  =   0.99996021
 JV6976!UTM  18      -   0.99998746  x   1.00005931  =   1.00004677
 JV6976
 JV6976:                Primary Azimuth Mark                     Grid Az
 JV6976:SPC MD       -  GPS 203                                  170 45 22.0
 JV6976:SPC VA N     -  GPS 203                                  169 49 08.9
 JV6976:UTM  18      -  GPS 203                                  172 00 58.1
 JV6976
 JV6976_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0686721130(NAD 83)
 JV6976
 JV6976|---------------------------------------------------------------------|
 JV6976| PID    Reference Object                     Distance      Geod. Az  |
 JV6976|                                                           dddmmss.s |
 JV6976| JV6977 GPS 203                             APPROX. 1.7 KM 1703640.5 |
 JV6976|---------------------------------------------------------------------|
 JV6976
 JV6976                          SUPERSEDED SURVEY CONTROL
 JV6976
 JV6976  NAD 83(2007)-  39 01 04.42362(N)    077 13 50.95529(W) AD(2002.00) 0
 JV6976  ELLIP H (02/10/07)   79.940  (m)                       GP(2002.00)    
 JV6976  ELLIP H (08/30/02)   79.998  (m)                       GP(       ) 4 2
 JV6976  ELLIP H (04/01/98)   79.895  (m)                       GP(       ) 4 1
 JV6976  NAD 83(1993)-  39 01 04.42338(N)    077 13 50.95544(W) AD(       ) 2
 JV6976  ELLIP H (11/14/94)   79.913  (m)                       GP(       ) 4 2
 JV6976  NAD 83(1991)-  39 01 04.42258(N)    077 13 50.95757(W) AD(       ) 2
 JV6976  NGVD 29 (09/10/92)  111.9    (m)  GEOID90  model used  GPS OBS        
 JV6976
 JV6976.Superseded values are not recommended for survey control.
 JV6976
 JV6976.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6976.See file dsdata.pdf to determine how the superseded data were derived.
 JV6976
 JV6976_MARKER: DD = SURVEY DISK
 JV6976_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6976_SP_SET: DRIVEN INTO GROUND
 JV6976_STAMPING: GPS 202 1991
 JV6976_MARK LOGO: VA-059
 JV6976_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6976_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6976+STABILITY: SURFACE MOTION
 JV6976_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6976+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV6976
 JV6976  HISTORY     - Date     Condition        Report By
 JV6976  HISTORY     - 1991     MONUMENTED       MSI
 JV6976  HISTORY     - 19920129 GOOD             MSI
 JV6976  HISTORY     - 20020207 GOOD             URS
 JV6976  HISTORY     - 20030909 GOOD             URS
 JV6976  HISTORY     - 20050405 GOOD             USPSQD
 JV6976
 JV6976                          STATION DESCRIPTION
 JV6976
 JV6976'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6976'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6976'1.3 MI (2.1 KM) WEST OF THE TOWN OF POTOMAC.  TO REACH THE STATION
 JV6976'FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD (S.R.
 JV6976'189), PROCEED SOUTHWEST ALONG FALLS ROAD FOR 0.4 MI (0.6 KM) TO THE
 JV6976'INTERSECTION WITH BURBANK DRIVE.  TURN RIGHT ONTO BURBANK DRIVE AND
 JV6976'TRAVEL 0.6 MI (1.0 KM) NORTHWEST TO THE INTERSECTION WITH MARTINGALE
 JV6976'COURT. TURN LEFT ONTO MARTINGALE COURT AND PROCEED 0.3 MI (0.5 KM)
 JV6976'WEST TO THE STATION ON THE LEFT, IN FRONT OF RESIDENCE NUMBER 10928.
 JV6976'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6976'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 202 1991.
 JV6976'THE STATION IS LOCATED SOUTH OF MARTINGALE COURT, 58.4 FT (17.8 M)
 JV6976'WEST OF A FIRE HYDRANT, 28.8 FT (8.8 M) SOUTH OF THE CENTER LINE OF
 JV6976'MARTINGALE COURT, 11.7 FT (3.6 M) NORTHEAST OF THE NORTHWESTERN
 JV6976'CORNERPOST OF A SPLIT RAIL FENCE, AND 11.6 FT (3.5 M) WEST OF A WATER
 JV6976'VALVE.
 JV6976
 JV6976                          STATION RECOVERY (1992)
 JV6976
 JV6976'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6976'RECOVERED IN GOOD CONDITION.
 JV6976
 JV6976                          STATION RECOVERY (2002)
 JV6976
 JV6976'RECOVERY NOTE BY URS COMPANY 2002 (JP)
 JV6976'RECOVERED IN GOOD CONDITION.
 JV6976
 JV6976                          STATION RECOVERY (2003)
 JV6976
 JV6976'RECOVERY NOTE BY URS COMPANY 2003 (MM)
 JV6976'RECOVERED IN GOOD CONDITION.
 JV6976
 JV6976                          STATION RECOVERY (2005)
 JV6976
 JV6976'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6976'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6977 ***********************************************************************
 JV6977  DESIGNATION -  GPS 203
 JV6977  PID         -  JV6977
 JV6977  STATE/COUNTY-  MD/MONTGOMERY
 JV6977  COUNTRY     -  US
 JV6977  USGS QUAD   -  ROCKVILLE (2016)
 JV6977
 JV6977                         *CURRENT SURVEY CONTROL
 JV6977  ______________________________________________________________________
 JV6977* NAD 83(2011) POSITION- 39 00 11.14822(N) 077 13 39.66480(W)   ADJUSTED
 JV6977* NAD 83(2011) ELLIP HT-    82.029 (meters)        (06/27/12)   ADJUSTED
 JV6977* NAD 83(2011) EPOCH   -  2010.00
 JV6977* NAVD 88 ORTHO HEIGHT -   113.753 (meters)      373.20  (feet) ADJUSTED
 JV6977  ______________________________________________________________________
 JV6977  GEOID HEIGHT    -        -31.719 (meters)                     GEOID18
 JV6977  NAD 83(2011) X  -  1,097,245.222 (meters)                     COMP
 JV6977  NAD 83(2011) Y  - -4,840,367.371 (meters)                     COMP
 JV6977  NAD 83(2011) Z  -  3,992,635.814 (meters)                     COMP
 JV6977  LAPLACE CORR    -         -0.50  (seconds)                    DEFLEC18
 JV6977  DYNAMIC HEIGHT  -        113.694 (meters)      373.01  (feet) COMP
 JV6977  MODELED GRAVITY -    980,109.0   (mgal)                       NAVD 88
 JV6977
 JV6977  VERT ORDER      -  THIRD
 JV6977
 JV6977  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6977  Standards:
 JV6977         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6977            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6977  -------------------------------------------------------------------
 JV6977  NETWORK    1.58   3.90           0.66   0.63   1.99      0.15821170
 JV6977  -------------------------------------------------------------------
 JV6977  Click here for local accuracies and other accuracy information.
 JV6977
 JV6977.The horizontal coordinates were established by GPS observations
 JV6977.and adjusted by the National Geodetic Survey in June 2012.
 JV6977
 JV6977.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6977.been affixed to the stable North American tectonic plate. See 
 JV6977.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6977
 JV6977.The horizontal coordinates are valid at the epoch date displayed above
 JV6977.which is a decimal equivalence of Year/Month/Day.
 JV6977
 JV6977.The orthometric height was determined by differential leveling and
 JV6977.adjusted by the NATIONAL GEODETIC SURVEY
 JV6977.in September 2004.
 JV6977
 JV6977.No vertical observational check was made to the station.
 JV6977
 JV6977.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6977.GEOID18 height accuracy estimate available here.
 JV6977
 JV6977.Click photographs - Photos may exist for this station.
 JV6977
 JV6977.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6977
 JV6977.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6977
 JV6977.The ellipsoidal height was determined by GPS observations
 JV6977.and is referenced to NAD 83.
 JV6977
 JV6977.The dynamic height is computed by dividing the NAVD 88
 JV6977.geopotential number by the normal gravity value computed on the
 JV6977.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6977.degrees latitude (g = 980.6199 gals.).
 JV6977
 JV6977.The modeled gravity was interpolated from observed gravity values.
 JV6977
 JV6977. The following values were computed from the NAD 83(2011) position.
 JV6977
 JV6977;                    North         East     Units Scale Factor Converg.
 JV6977;SPC MD       -   148,374.571   380,278.317   MT  0.99995231   -0 08 34.4
 JV6977;SPC MD       -   486,792.24  1,247,629.78   sFT  0.99995231   -0 08 34.4
 JV6977;SPC VA N     - 2,149,108.686 3,610,204.571   MT  0.99997098   +0 47 38.7
 JV6977;SPC VA N     - 7,050,867.41 11,844,479.50   sFT  0.99997098   +0 47 38.7
 JV6977;UTM  18      - 4,319,481.024   307,099.078   MT  1.00005821   -1 24 08.8
 JV6977
 JV6977!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6977!SPC MD       -   0.99998713  x   0.99995231  =   0.99993944
 JV6977!SPC VA N     -   0.99998713  x   0.99997098  =   0.99995811
 JV6977!UTM  18      -   0.99998713  x   1.00005821  =   1.00004534
 JV6977
 JV6977:                Primary Azimuth Mark                     Grid Az
 JV6977:SPC MD       -  GPS 204                                  140 49 39.7
 JV6977:SPC VA N     -  GPS 204                                  139 53 26.6
 JV6977:UTM  18      -  GPS 204                                  142 05 14.1
 JV6977
 JV6977_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0709919481(NAD 83)
 JV6977
 JV6977|---------------------------------------------------------------------|
 JV6977| PID    Reference Object                     Distance      Geod. Az  |
 JV6977|                                                           dddmmss.s |
 JV6977| HV9181 GPS 204                             APPROX. 1.6 KM 1404105.3 |
 JV6977|---------------------------------------------------------------------|
 JV6977
 JV6977                          SUPERSEDED SURVEY CONTROL
 JV6977
 JV6977  NAD 83(2007)-  39 00 11.14817(N)    077 13 39.66580(W) AD(2002.00) 0
 JV6977  ELLIP H (02/10/07)   82.051  (m)                       GP(2002.00)    
 JV6977  ELLIP H (08/30/02)   82.108  (m)                       GP(       ) 4 2
 JV6977  ELLIP H (04/01/98)   82.023  (m)                       GP(       ) 4 1
 JV6977  NAD 83(1993)-  39 00 11.14795(N)    077 13 39.66600(W) AD(       ) 2
 JV6977  ELLIP H (11/14/94)   82.027  (m)                       GP(       ) 4 2
 JV6977  NAD 83(1991)-  39 00 11.14723(N)    077 13 39.66812(W) AD(       ) 2
 JV6977  NGVD 29 (09/10/92)  114.0    (m)  GEOID90  model used  GPS OBS        
 JV6977
 JV6977.Superseded values are not recommended for survey control.
 JV6977
 JV6977.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6977.See file dsdata.pdf to determine how the superseded data were derived.
 JV6977
 JV6977_MARKER: DD = SURVEY DISK
 JV6977_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV6977_SP_SET: DRIVEN INTO GROUND
 JV6977_STAMPING: GPS 203 1991
 JV6977_MARK LOGO: VA-059
 JV6977_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6977_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6977+STABILITY: SURFACE MOTION
 JV6977_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6977+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV6977
 JV6977  HISTORY     - Date     Condition        Report By
 JV6977  HISTORY     - 1991     MONUMENTED       MSI
 JV6977  HISTORY     - 19920129 GOOD             MSI
 JV6977  HISTORY     - 20020207 GOOD             URS
 JV6977  HISTORY     - 20030909 GOOD             URS
 JV6977  HISTORY     - 20050405 GOOD             USPSQD
 JV6977
 JV6977                          STATION DESCRIPTION
 JV6977
 JV6977'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 JV6977'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 JV6977'1.3 MI (2.1 KM) SOUTHWEST OF THE TOWN OF POTOMAC.  TO REACH THE
 JV6977'STATION FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD
 JV6977'(S.R. 189), PROCEED SOUTHWEST ALONG FALLS ROAD FOR 1.3 MI (2.1 KM) TO
 JV6977'THE INTERSECTION WITH BRICKYARD ROAD.  TURN RIGHT ONTO BRICKYARD ROAD
 JV6977'AND TRAVEL 0.1 MI (0.2 KM) NORTHWEST TO THE STATION ON THE LEFT, IN
 JV6977'THE MEDIAN.
 JV6977'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 JV6977'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 203 1991.
 JV6977'THE STATION IS LOCATED IN THE MEDIAN OF BRICKYARD ROAD, 58.8 FT
 JV6977'(17.9 M) EAST OF A BRICK COLUMN ON THE NORTHWEST SIDE OF THE DRIVEWAY
 JV6977'TO RESIDENCE NUMBER 9008, 54.8 FT (16.7 M) SOUTH OF THE
 JV6977'SOUTHEASTERNMOST BRICK COLUMN ON THE NORTHWESTERN SIDE OF THE
 JV6977'DRIVEWAY TO RESIDENCE NUMBER 9005, 49.8 FT (15.2 M) NORTHEAST OF A
 JV6977'BRICK COLUMN ON THE SOUTHEAST SIDE OF THE DRIVEWAY TO RESIDENCE
 JV6977'NUMBER 9008, 47.1 FT (14.4 M) SOUTHWEST OF THE NORTHWESTERNMOST BRICK
 JV6977'COLUMN ON THE SOUTHEASTERN SIDE OF THE DRIVEWAY TO RESIDENCE NUMBER
 JV6977'9005, AND 41.2 FT (12.6 M) SOUTHEAST OF THE BACK OF THE CURB AT THE
 JV6977'NORTHWESTERNMOST END OF THE MEDIAN.
 JV6977
 JV6977                          STATION RECOVERY (1992)
 JV6977
 JV6977'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 JV6977'RECOVERED IN GOOD CONDITION.
 JV6977
 JV6977                          STATION RECOVERY (2002)
 JV6977
 JV6977'RECOVERY NOTE BY URS COMPANY 2002 (JP)
 JV6977'RECOVERED IN GOOD CONDITION.
 JV6977
 JV6977                          STATION RECOVERY (2003)
 JV6977
 JV6977'RECOVERY NOTE BY URS COMPANY 2003 (MM)
 JV6977'RECOVERED IN GOOD CONDITION.
 JV6977
 JV6977                          STATION RECOVERY (2005)
 JV6977
 JV6977'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV6977'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9181 ***********************************************************************
 HV9181  DESIGNATION -  GPS 204
 HV9181  PID         -  HV9181
 HV9181  STATE/COUNTY-  MD/MONTGOMERY
 HV9181  COUNTRY     -  US
 HV9181  USGS QUAD   -  FALLS CHURCH (2019)
 HV9181
 HV9181                         *CURRENT SURVEY CONTROL
 HV9181  ______________________________________________________________________
 HV9181* NAD 83(2011) POSITION- 38 59 30.75668(N) 077 12 57.28103(W)   ADJUSTED
 HV9181* NAD 83(2011) ELLIP HT-    52.634 (meters)        (06/27/12)   ADJUSTED
 HV9181* NAD 83(2011) EPOCH   -  2010.00
 HV9181* NAVD 88 ORTHO HEIGHT -    84.4   (meters)      277.    (feet) VERTCON3
 HV9181  ______________________________________________________________________
 HV9181  GEOID HEIGHT    -        -31.738 (meters)                     GEOID18
 HV9181  NAD 83(2011) X  -  1,098,408.199 (meters)                     COMP
 HV9181  NAD 83(2011) Y  - -4,840,883.929 (meters)                     COMP
 HV9181  NAD 83(2011) Z  -  3,991,649.275 (meters)                     COMP
 HV9181  LAPLACE CORR    -         -1.28  (seconds)                    DEFLEC18
 HV9181
 HV9181  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9181  Standards:
 HV9181         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9181            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9181  -------------------------------------------------------------------
 HV9181  NETWORK    2.36   6.04           1.04   0.87   3.08      0.10862353
 HV9181  -------------------------------------------------------------------
 HV9181  Click here for local accuracies and other accuracy information.
 HV9181
 HV9181.The horizontal coordinates were established by GPS observations
 HV9181.and adjusted by the National Geodetic Survey in June 2012.
 HV9181
 HV9181.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9181.been affixed to the stable North American tectonic plate. See 
 HV9181.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9181
 HV9181.The horizontal coordinates are valid at the epoch date displayed above
 HV9181.which is a decimal equivalence of Year/Month/Day.
 HV9181
 HV9181.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV9181.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV9181
 HV9181.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9181.GEOID18 height accuracy estimate available here.
 HV9181
 HV9181.Click photographs - Photos may exist for this station.
 HV9181
 HV9181.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9181
 HV9181.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9181
 HV9181.The ellipsoidal height was determined by GPS observations
 HV9181.and is referenced to NAD 83.
 HV9181
 HV9181. The following values were computed from the NAD 83(2011) position.
 HV9181
 HV9181;                    North         East     Units Scale Factor Converg.
 HV9181;SPC MD       -   147,126.577   381,295.151   MT  0.99995189   -0 08 07.8
 HV9181;SPC MD       -   482,697.78  1,250,965.84   sFT  0.99995189   -0 08 07.8
 HV9181;SPC VA N     - 2,147,877.464 3,611,241.696   MT  0.99996969   +0 48 05.1
 HV9181;SPC VA N     - 7,046,827.98 11,847,882.13   sFT  0.99996969   +0 48 05.1
 HV9181;UTM  18      - 4,318,210.851   308,088.340   MT  1.00005353   -1 23 40.9
 HV9181
 HV9181!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9181!SPC MD       -   0.99999174  x   0.99995189  =   0.99994363
 HV9181!SPC VA N     -   0.99999174  x   0.99996969  =   0.99996143
 HV9181!UTM  18      -   0.99999174  x   1.00005353  =   1.00004527
 HV9181
 HV9181:                Primary Azimuth Mark                     Grid Az
 HV9181:SPC MD       -  GPS 205                                  132 01 12.1
 HV9181:SPC VA N     -  GPS 205                                  131 04 59.2
 HV9181:UTM  18      -  GPS 205                                  133 16 45.2
 HV9181
 HV9181_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0808818210(NAD 83)
 HV9181
 HV9181|---------------------------------------------------------------------|
 HV9181| PID    Reference Object                     Distance      Geod. Az  |
 HV9181|                                                           dddmmss.s |
 HV9181| HV9182 GPS 205                             APPROX. 1.2 KM 1315304.3 |
 HV9181|---------------------------------------------------------------------|
 HV9181
 HV9181                          SUPERSEDED SURVEY CONTROL
 HV9181
 HV9181  NAD 83(2007)-  38 59 30.75617(N)    077 12 57.28252(W) AD(2002.00) 0
 HV9181  ELLIP H (02/10/07)   52.671  (m)                       GP(2002.00)    
 HV9181  ELLIP H (08/30/02)   52.725  (m)                       GP(       ) 4 2
 HV9181  NAD 83(1993)-  38 59 30.75594(N)    077 12 57.28275(W) AD(       ) 2
 HV9181  ELLIP H (11/14/94)   52.662  (m)                       GP(       ) 4 2
 HV9181  NAD 83(1991)-  38 59 30.75523(N)    077 12 57.28492(W) AD(       ) 2
 HV9181  NGVD 29 (09/10/92)   84.7    (m)  GEOID90  model used  GPS OBS        
 HV9181
 HV9181.Superseded values are not recommended for survey control.
 HV9181
 HV9181.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9181.See file dsdata.pdf to determine how the superseded data were derived.
 HV9181
 HV9181_MARKER: DD = SURVEY DISK
 HV9181_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV9181_SP_SET: DRIVEN INTO GROUND
 HV9181_STAMPING: GPS 204 1991
 HV9181_MARK LOGO: VA-059
 HV9181_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9181_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9181+STABILITY: SURFACE MOTION
 HV9181_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9181+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 HV9181
 HV9181  HISTORY     - Date     Condition        Report By
 HV9181  HISTORY     - 1991     MONUMENTED       MSI
 HV9181  HISTORY     - 19920129 GOOD             MSI
 HV9181  HISTORY     - 20001106 GOOD             USPSQD
 HV9181  HISTORY     - 20020207 GOOD             URS
 HV9181  HISTORY     - 20030909 GOOD             URS
 HV9181  HISTORY     - 20050405 GOOD             USPSQD
 HV9181
 HV9181                          STATION DESCRIPTION
 HV9181
 HV9181'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9181'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9181'2.0 MI (3.2 KM) SOUTH OF THE TOWN OF POTOMAC.  TO REACH THE STATION
 HV9181'FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD (S.R.
 HV9181'189), PROCEED SOUTHWEST ALONG FALLS ROAD FOR 1.3 MI (2.1 KM) TO THE
 HV9181'INTERSECTION WITH BRICKYARD ROAD.  TURN LEFT ONTO BRICKYARD ROAD AND
 HV9181'TRAVEL SOUTHEAST FOR 0.8 MI (1.3 KM) TO THE INTERSECTION WITH RIVER
 HV9181'FALLS DRIVE.  TURN RIGHT ONTO RIVER FALLS DRIVE AND PROCEED SOUTH FOR
 HV9181'0.15 MI (0.24 KM) TO THE STATION ON THE RIGHT, BETWEEN NUMBERS 8112
 HV9181'AND 8200 RIVER FALLS DRIVE.
 HV9181'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9181'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 204 1991.
 HV9181'THE STATION IS LOCATED IN THE GRASS BETWEEN A CONCRETE SIDEWALK AND
 HV9181'CONCRETE HANDICAP RAMP, 44.2 FT (13.5 M) EAST OF THE EASTERN CORNER
 HV9181'OF NUMBER 8112, 22.2 FT (6.8 M) NORTH OF THE SOUTHEASTERNMOST CORNER
 HV9181'OF A CONCRETE CATCH BASIN, AND 11.4 FT (3.5 M) WEST OF THE
 HV9181'NORTHWESTERNMOST CORNER OF A HANDICAP RAMP.
 HV9181
 HV9181                          STATION RECOVERY (1992)
 HV9181
 HV9181'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9181'RECOVERED IN GOOD CONDITION.
 HV9181
 HV9181                          STATION RECOVERY (2000)
 HV9181
 HV9181'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV9181'RECOVERED IN GOOD CONDITION.
 HV9181
 HV9181                          STATION RECOVERY (2002)
 HV9181
 HV9181'RECOVERY NOTE BY URS COMPANY 2002 (JP)
 HV9181'RECOVERED IN GOOD CONDITION.
 HV9181
 HV9181                          STATION RECOVERY (2003)
 HV9181
 HV9181'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 HV9181'RECOVERED IN GOOD CONDITION.
 HV9181
 HV9181                          STATION RECOVERY (2005)
 HV9181
 HV9181'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV9181'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9182 ***********************************************************************
 HV9182  DESIGNATION -  GPS 205
 HV9182  PID         -  HV9182
 HV9182  STATE/COUNTY-  MD/MONTGOMERY
 HV9182  COUNTRY     -  US
 HV9182  USGS QUAD   -  FALLS CHURCH (2019)
 HV9182
 HV9182                         *CURRENT SURVEY CONTROL
 HV9182  ______________________________________________________________________
 HV9182* NAD 83(2011) POSITION- 38 59 05.33408(N) 077 12 20.96019(W)   ADJUSTED
 HV9182* NAD 83(2011) ELLIP HT-    53.659 (meters)        (06/27/12)   ADJUSTED
 HV9182* NAD 83(2011) EPOCH   -  2010.00
 HV9182* NAVD 88 ORTHO HEIGHT -    85.4   (meters)      280.    (feet) VERTCON3
 HV9182  ______________________________________________________________________
 HV9182  GEOID HEIGHT    -        -31.753 (meters)                     GEOID18
 HV9182  NAD 83(2011) X  -  1,099,370.011 (meters)                     COMP
 HV9182  NAD 83(2011) Y  - -4,841,172.217 (meters)                     COMP
 HV9182  NAD 83(2011) Z  -  3,991,040.554 (meters)                     COMP
 HV9182  LAPLACE CORR    -         -1.63  (seconds)                    DEFLEC18
 HV9182
 HV9182  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9182  Standards:
 HV9182         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9182            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9182  -------------------------------------------------------------------
 HV9182  NETWORK    2.14   4.98           0.96   0.76   2.54      0.13503361
 HV9182  -------------------------------------------------------------------
 HV9182  Click here for local accuracies and other accuracy information.
 HV9182
 HV9182.The horizontal coordinates were established by GPS observations
 HV9182.and adjusted by the National Geodetic Survey in June 2012.
 HV9182
 HV9182.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9182.been affixed to the stable North American tectonic plate. See 
 HV9182.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9182
 HV9182.The horizontal coordinates are valid at the epoch date displayed above
 HV9182.which is a decimal equivalence of Year/Month/Day.
 HV9182
 HV9182.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV9182.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV9182
 HV9182.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9182.GEOID18 height accuracy estimate available here.
 HV9182
 HV9182.Click photographs - Photos may exist for this station.
 HV9182
 HV9182.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9182
 HV9182.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9182
 HV9182.The ellipsoidal height was determined by GPS observations
 HV9182.and is referenced to NAD 83.
 HV9182
 HV9182. The following values were computed from the NAD 83(2011) position.
 HV9182
 HV9182;                    North         East     Units Scale Factor Converg.
 HV9182;SPC MD       -   146,340.627   382,167.423   MT  0.99995165   -0 07 45.1
 HV9182;SPC MD       -   480,119.21  1,253,827.62   sFT  0.99995165   -0 07 45.1
 HV9182;SPC VA N     - 2,147,105.868 3,612,126.719   MT  0.99996889   +0 48 27.8
 HV9182;SPC VA N     - 7,044,296.50 11,850,785.74   sFT  0.99996889   +0 48 27.8
 HV9182;UTM  18      - 4,317,405.844   308,943.217   MT  1.00004949   -1 23 17.3
 HV9182
 HV9182!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9182!SPC MD       -   0.99999158  x   0.99995165  =   0.99994323
 HV9182!SPC VA N     -   0.99999158  x   0.99996889  =   0.99996047
 HV9182!UTM  18      -   0.99999158  x   1.00004949  =   1.00004107
 HV9182
 HV9182:                Primary Azimuth Mark                     Grid Az
 HV9182:SPC MD       -  GPS 206                                  128 03 59.5
 HV9182:SPC VA N     -  GPS 206                                  127 07 46.6
 HV9182:UTM  18      -  GPS 206                                  129 19 31.7
 HV9182
 HV9182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0894317405(NAD 83)
 HV9182
 HV9182|---------------------------------------------------------------------|
 HV9182| PID    Reference Object                     Distance      Geod. Az  |
 HV9182|                                                           dddmmss.s |
 HV9182| HV9183 GPS 206                             APPROX. 1.3 KM 1275614.4 |
 HV9182|---------------------------------------------------------------------|
 HV9182
 HV9182                          SUPERSEDED SURVEY CONTROL
 HV9182
 HV9182  NAD 83(2007)-  38 59 05.33347(N)    077 12 20.96174(W) AD(2002.00) 0
 HV9182  ELLIP H (02/10/07)   53.694  (m)                       GP(2002.00)    
 HV9182  ELLIP H (08/30/02)   53.745  (m)                       GP(       ) 4 2
 HV9182  NAD 83(1993)-  38 59 05.33327(N)    077 12 20.96198(W) AD(       ) 2
 HV9182  ELLIP H (11/14/94)   53.688  (m)                       GP(       ) 4 2
 HV9182  NAD 83(1991)-  38 59 05.33253(N)    077 12 20.96415(W) AD(       ) 2
 HV9182  NGVD 29 (09/10/92)   85.7    (m)  GEOID90  model used  GPS OBS        
 HV9182
 HV9182.Superseded values are not recommended for survey control.
 HV9182
 HV9182.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9182.See file dsdata.pdf to determine how the superseded data were derived.
 HV9182
 HV9182_MARKER: DD = SURVEY DISK
 HV9182_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV9182_SP_SET: DRIVEN INTO GROUND
 HV9182_STAMPING: GPS 205 1991
 HV9182_MARK LOGO: VA-059
 HV9182_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9182_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9182+STABILITY: SURFACE MOTION
 HV9182_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9182+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 HV9182
 HV9182  HISTORY     - Date     Condition        Report By
 HV9182  HISTORY     - 1991     MONUMENTED       MSI
 HV9182  HISTORY     - 19920129 GOOD             MSI
 HV9182  HISTORY     - 20001106 GOOD             USPSQD
 HV9182  HISTORY     - 20030909 GOOD             URS
 HV9182
 HV9182                          STATION DESCRIPTION
 HV9182
 HV9182'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9182'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9182'2.5 MI (4.0 KM) SOUTH OF THE TOWN OF POTOMAC.  TO REACH THE STATION
 HV9182'FROM THE INTERSECTION OF RIVER ROAD (S.R. 190) AND FALLS ROAD (S.R.
 HV9182'189), PROCEED SOUTHWEST ALONG FALLS ROAD FOR 1.3 MI (2.1 KM) TO THE
 HV9182'INTERSECTION WITH BRICKYARD ROAD.  TURN LEFT ONTO BRICKYARD ROAD AND
 HV9182'TRAVEL SOUTHEAST FOR 1.6 MI (2.6 KM) TO THE INTERSECTION WITH DARMUID
 HV9182'GREEN DRIVE.  TURN LEFT ONTO DARMUID GREEN DRIVE AND PROCEED
 HV9182'NORTHEAST FOR 0.3 MI (0.5 KM) TO THE INTERSECTION WITH NEW LONDON
 HV9182'DRIVE.  TURN RIGHT ONTO NEW LONDON DRIVE AND TRAVEL 0.1 MI (0.2 KM)
 HV9182'SOUTHEAST TO THE STATION ON THE LEFT, NEAR THE DRIVEWAY TO RESIDENCE
 HV9182'NUMBER 10001.
 HV9182'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9182'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 205 1991.
 HV9182'THE STATION IS LOCATED ON THE NORTHEAST SIDE OF NEW LONDON DRIVE,
 HV9182'32.2 FT (9.8 M) WEST OF THE WESTERNMOST CORNER OF A BRICK LIGHT
 HV9182'PILLAR, 21.0 FT (6.4 M) NORTHWEST OF THE INTERSECTION OF THE NORTHERN
 HV9182'EDGE OF NEW LONDON DRIVE AND THE WESTERN EDGE OF THE DRIVEWAY TO
 HV9182'NUMBER 10001, 18.5 FT (5.6 M) NORTHEAST OF THE CENTER LINE OF NEW
 HV9182'LONDON DRIVE, AND 17.0 FT (5.2 M) NORTHWEST OF A TELEPHONE PEDESTAL.
 HV9182
 HV9182                          STATION RECOVERY (1992)
 HV9182
 HV9182'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9182'RECOVERED IN GOOD CONDITION.
 HV9182
 HV9182                          STATION RECOVERY (2000)
 HV9182
 HV9182'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV9182'RECOVERED IN GOOD CONDITION.
 HV9182
 HV9182                          STATION RECOVERY (2003)
 HV9182
 HV9182'RECOVERY NOTE BY URS COMPANY 2003 (MM)
 HV9182'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9183 ***********************************************************************
 HV9183  DESIGNATION -  GPS 206
 HV9183  PID         -  HV9183
 HV9183  STATE/COUNTY-  MD/MONTGOMERY
 HV9183  COUNTRY     -  US
 HV9183  USGS QUAD   -  FALLS CHURCH (2019)
 HV9183
 HV9183                         *CURRENT SURVEY CONTROL
 HV9183  ______________________________________________________________________
 HV9183* NAD 83(2011) POSITION- 38 58 38.65645(N) 077 11 37.11989(W)   ADJUSTED
 HV9183* NAD 83(2011) ELLIP HT-    14.831 (meters)        (06/27/12)   ADJUSTED
 HV9183* NAD 83(2011) EPOCH   -  2010.00
 HV9183* NAVD 88 ORTHO HEIGHT -    46.577 (meters)      152.81  (feet) ADJUSTED
 HV9183  ______________________________________________________________________
 HV9183  GEOID HEIGHT    -        -31.774 (meters)                     GEOID18
 HV9183  NAD 83(2011) X  -  1,100,506.968 (meters)                     COMP
 HV9183  NAD 83(2011) Y  - -4,841,413.654 (meters)                     COMP
 HV9183  NAD 83(2011) Z  -  3,990,376.618 (meters)                     COMP
 HV9183  LAPLACE CORR    -         -1.93  (seconds)                    DEFLEC18
 HV9183  DYNAMIC HEIGHT  -         46.553 (meters)      152.73  (feet) COMP
 HV9183  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 HV9183
 HV9183  VERT ORDER      -  THIRD
 HV9183
 HV9183  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9183  Standards:
 HV9183         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9183            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9183  -------------------------------------------------------------------
 HV9183  NETWORK    1.76   3.51           0.81   0.59   1.79      0.00658252
 HV9183  -------------------------------------------------------------------
 HV9183  Click here for local accuracies and other accuracy information.
 HV9183
 HV9183.The horizontal coordinates were established by GPS observations
 HV9183.and adjusted by the National Geodetic Survey in June 2012.
 HV9183
 HV9183.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9183.been affixed to the stable North American tectonic plate. See 
 HV9183.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9183
 HV9183.The horizontal coordinates are valid at the epoch date displayed above
 HV9183.which is a decimal equivalence of Year/Month/Day.
 HV9183
 HV9183.The orthometric height was determined by differential leveling and
 HV9183.adjusted by the NATIONAL GEODETIC SURVEY
 HV9183.in September 2004.
 HV9183
 HV9183.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9183.GEOID18 height accuracy estimate available here.
 HV9183
 HV9183.Click photographs - Photos may exist for this station.
 HV9183
 HV9183.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9183
 HV9183.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9183
 HV9183.The ellipsoidal height was determined by GPS observations
 HV9183.and is referenced to NAD 83.
 HV9183
 HV9183.The dynamic height is computed by dividing the NAVD 88
 HV9183.geopotential number by the normal gravity value computed on the
 HV9183.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9183.degrees latitude (g = 980.6199 gals.).
 HV9183
 HV9183.The modeled gravity was interpolated from observed gravity values.
 HV9183
 HV9183. The following values were computed from the NAD 83(2011) position.
 HV9183
 HV9183;                    North         East     Units Scale Factor Converg.
 HV9183;SPC MD       -   145,515.688   383,220.775   MT  0.99995141   -0 07 17.5
 HV9183;SPC MD       -   477,412.72  1,257,283.49   sFT  0.99995141   -0 07 17.5
 HV9183;SPC VA N     - 2,146,298.249 3,613,193.436   MT  0.99996807   +0 48 55.2
 HV9183;SPC VA N     - 7,041,646.84 11,854,285.46   sFT  0.99996807   +0 48 55.2
 HV9183;UTM  18      - 4,316,557.882   309,978.290   MT  1.00004464   -1 22 48.9
 HV9183
 HV9183!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9183!SPC MD       -   0.99999767  x   0.99995141  =   0.99994908
 HV9183!SPC VA N     -   0.99999767  x   0.99996807  =   0.99996574
 HV9183!UTM  18      -   0.99999767  x   1.00004464  =   1.00004231
 HV9183
 HV9183:                Primary Azimuth Mark                     Grid Az
 HV9183:SPC MD       -  GPS 207                                  094 26 19.6
 HV9183:SPC VA N     -  GPS 207                                  093 30 06.9
 HV9183:UTM  18      -  GPS 207                                  095 41 51.0
 HV9183
 HV9183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0997816557(NAD 83)
 HV9183
 HV9183|---------------------------------------------------------------------|
 HV9183| PID    Reference Object                     Distance      Geod. Az  |
 HV9183|                                                           dddmmss.s |
 HV9183| HV9184 GPS 207                             APPROX. 1.0 KM 0941902.1 |
 HV9183|---------------------------------------------------------------------|
 HV9183
 HV9183                          SUPERSEDED SURVEY CONTROL
 HV9183
 HV9183  NAD 83(2007)-  38 58 38.65581(N)    077 11 37.12145(W) AD(2002.00) 0
 HV9183  ELLIP H (02/10/07)   14.866  (m)                       GP(2002.00)    
 HV9183  ELLIP H (08/30/02)   14.917  (m)                       GP(       ) 4 2
 HV9183  NAD 83(1993)-  38 58 38.65561(N)    077 11 37.12170(W) AD(       ) 2
 HV9183  ELLIP H (11/14/94)   14.861  (m)                       GP(       ) 4 2
 HV9183  NAD 83(1991)-  38 58 38.65487(N)    077 11 37.12386(W) AD(       ) 2
 HV9183  NGVD 29 (09/10/92)   46.9    (m)  GEOID90  model used  GPS OBS        
 HV9183
 HV9183.Superseded values are not recommended for survey control.
 HV9183
 HV9183.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9183.See file dsdata.pdf to determine how the superseded data were derived.
 HV9183
 HV9183_MARKER: DD = SURVEY DISK
 HV9183_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV9183_SP_SET: DRIVEN INTO GROUND
 HV9183_STAMPING: GPS 206 1991
 HV9183_MARK LOGO: VA-059
 HV9183_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9183_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9183+STABILITY: SURFACE MOTION
 HV9183_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9183+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 HV9183
 HV9183  HISTORY     - Date     Condition        Report By
 HV9183  HISTORY     - 1991     MONUMENTED       MSI
 HV9183  HISTORY     - 19920129 GOOD             MSI
 HV9183  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV9183  HISTORY     - 20030909 GOOD             URS
 HV9183
 HV9183                          STATION DESCRIPTION
 HV9183
 HV9183'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9183'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9183'2.95 MI (4.75 KM) WEST OF THE TOWN OF GLEN ECHO.  TO REACH THE
 HV9183'STATION FROM THE INTERSECTION OF MACARTHUR BOULEVARD AND GOLDSBORO
 HV9183'ROAD (S.R. 614), PROCEED WEST ALONG MACARTHUR BOULEVARD FOR 2.95 MI
 HV9183'(4.75 KM) TO THE STATION ON THE RIGHT IN FRONT OF RESIDENCE NUMBER
 HV9183'9495.
 HV9183'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9183'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 206 1991.
 HV9183'THE STATION IS LOCATED ALONG THE NORTHEAST SIDE OF MACARTHUR
 HV9183'BOULEVARD, 74.5 FT (22.7 M) NORTH OF THE NORTHERN END OF A CONCRETE
 HV9183'END WALL SOUTHWEST OF THE ENTRANCE TO THE DAVID W. TAYLOR RESEARCH
 HV9183'CENTER, 71.0 FT (21.6 M) EAST OF THE EASTERN END OF ANOTHER CONCRETE
 HV9183'END WALL ON THE SOUTH SIDE OF MACARTHUR BOULEVARD, 14.0 FT (4.3 M)
 HV9183'WEST OF THE WESTERN END OF A C-M-P UNDER THE DRIVEWAY TO RESIDENCE
 HV9183'NUMBER 9495, AND 9.5 FT (2.9 M) NORTHWEST OF THE INTERSECTION OF THE
 HV9183'NORTHERN EDGE OF THE PAVEMENT OF MACARTHUR DRIVE AND THE WESTERN EDGE
 HV9183'OF THE PAVEMENT OF THE DRIVEWAY TO RESIDENCE NUMBER 9495.
 HV9183
 HV9183                          STATION RECOVERY (1992)
 HV9183
 HV9183'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9183'RECOVERED IN GOOD CONDITION.
 HV9183
 HV9183                          STATION RECOVERY (2000)
 HV9183
 HV9183'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV9183'MARK NOT FOUND.
 HV9183
 HV9183                          STATION RECOVERY (2003)
 HV9183
 HV9183'RECOVERY NOTE BY URS COMPANY 2003 (MM)
 HV9183'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9184 ***********************************************************************
 HV9184  DESIGNATION -  GPS 207
 HV9184  PID         -  HV9184
 HV9184  STATE/COUNTY-  MD/MONTGOMERY
 HV9184  COUNTRY     -  US
 HV9184  USGS QUAD   -  FALLS CHURCH (2019)
 HV9184
 HV9184                         *CURRENT SURVEY CONTROL
 HV9184  ______________________________________________________________________
 HV9184* NAD 83(2011) POSITION- 38 58 36.29931(N) 077 10 57.15155(W)   ADJUSTED
 HV9184* NAD 83(2011) ELLIP HT-    19.826 (meters)        (06/27/12)   ADJUSTED
 HV9184* NAD 83(2011) EPOCH   -  2010.00
 HV9184* NAVD 88 ORTHO HEIGHT -    51.595 (meters)      169.27  (feet) ADJUSTED
 HV9184  ______________________________________________________________________
 HV9184  GEOID HEIGHT    -        -31.786 (meters)                     GEOID18
 HV9184  NAD 83(2011) X  -  1,101,456.082 (meters)                     COMP
 HV9184  NAD 83(2011) Y  - -4,841,248.685 (meters)                     COMP
 HV9184  NAD 83(2011) Z  -  3,990,323.252 (meters)                     COMP
 HV9184  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 HV9184  DYNAMIC HEIGHT  -         51.567 (meters)      169.18  (feet) COMP
 HV9184  MODELED GRAVITY -    980,097.1   (mgal)                       NAVD 88
 HV9184
 HV9184  VERT ORDER      -  THIRD
 HV9184
 HV9184  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9184  Standards:
 HV9184         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9184            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9184  -------------------------------------------------------------------
 HV9184  NETWORK    1.75   3.67           0.79   0.62   1.87      0.01705463
 HV9184  -------------------------------------------------------------------
 HV9184  Click here for local accuracies and other accuracy information.
 HV9184
 HV9184.The horizontal coordinates were established by GPS observations
 HV9184.and adjusted by the National Geodetic Survey in June 2012.
 HV9184
 HV9184.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9184.been affixed to the stable North American tectonic plate. See 
 HV9184.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9184
 HV9184.The horizontal coordinates are valid at the epoch date displayed above
 HV9184.which is a decimal equivalence of Year/Month/Day.
 HV9184
 HV9184.The orthometric height was determined by differential leveling and
 HV9184.adjusted by the NATIONAL GEODETIC SURVEY
 HV9184.in September 2004.
 HV9184
 HV9184.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9184.GEOID18 height accuracy estimate available here.
 HV9184
 HV9184.Click photographs - Photos may exist for this station.
 HV9184
 HV9184.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9184
 HV9184.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9184
 HV9184.The ellipsoidal height was determined by GPS observations
 HV9184.and is referenced to NAD 83.
 HV9184
 HV9184.The dynamic height is computed by dividing the NAVD 88
 HV9184.geopotential number by the normal gravity value computed on the
 HV9184.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9184.degrees latitude (g = 980.6199 gals.).
 HV9184
 HV9184.The modeled gravity was interpolated from observed gravity values.
 HV9184
 HV9184. The following values were computed from the NAD 83(2011) position.
 HV9184
 HV9184;                    North         East     Units Scale Factor Converg.
 HV9184;SPC MD       -   145,441.021   384,182.640   MT  0.99995139   -0 06 52.5
 HV9184;SPC MD       -   477,167.75  1,260,439.21   sFT  0.99995139   -0 06 52.5
 HV9184;SPC VA N     - 2,146,239.318 3,614,156.409   MT  0.99996800   +0 49 20.1
 HV9184;SPC VA N     - 7,041,453.50 11,857,444.82   sFT  0.99996800   +0 49 20.1
 HV9184;UTM  18      - 4,316,462.096   310,938.371   MT  1.00004016   -1 22 23.7
 HV9184
 HV9184!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9184!SPC MD       -   0.99999689  x   0.99995139  =   0.99994828
 HV9184!SPC VA N     -   0.99999689  x   0.99996800  =   0.99996489
 HV9184!UTM  18      -   0.99999689  x   1.00004016  =   1.00003705
 HV9184
 HV9184:                Primary Azimuth Mark                     Grid Az
 HV9184:SPC MD       -  GPS 208                                  078 37 06.3
 HV9184:SPC VA N     -  GPS 208                                  077 40 53.7
 HV9184:UTM  18      -  GPS 208                                  079 52 37.5
 HV9184
 HV9184_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1093816462(NAD 83)
 HV9184
 HV9184|---------------------------------------------------------------------|
 HV9184| PID    Reference Object                     Distance      Geod. Az  |
 HV9184|                                                           dddmmss.s |
 HV9184| HV9185 GPS 208                             APPROX. 0.9 KM 0783013.8 |
 HV9184|---------------------------------------------------------------------|
 HV9184
 HV9184                          SUPERSEDED SURVEY CONTROL
 HV9184
 HV9184  NAD 83(2007)-  38 58 36.29854(N)    077 10 57.15336(W) AD(2002.00) 0
 HV9184  ELLIP H (02/10/07)   19.871  (m)                       GP(2002.00)    
 HV9184  ELLIP H (08/30/02)   19.924  (m)                       GP(       ) 4 2
 HV9184  NAD 83(1993)-  38 58 36.29833(N)    077 10 57.15360(W) AD(       ) 2
 HV9184  ELLIP H (11/14/94)   19.871  (m)                       GP(       ) 4 2
 HV9184  NAD 83(1991)-  38 58 36.29758(N)    077 10 57.15578(W) AD(       ) 2
 HV9184  NGVD 29 (09/10/92)   51.9    (m)  GEOID90  model used  GPS OBS        
 HV9184
 HV9184.Superseded values are not recommended for survey control.
 HV9184
 HV9184.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9184.See file dsdata.pdf to determine how the superseded data were derived.
 HV9184
 HV9184_MARKER: DD = SURVEY DISK
 HV9184_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV9184_SP_SET: DRIVEN INTO GROUND
 HV9184_STAMPING: GPS 207 1991
 HV9184_MARK LOGO: VA-059
 HV9184_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9184_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9184+STABILITY: SURFACE MOTION
 HV9184_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9184+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2003
 HV9184
 HV9184  HISTORY     - Date     Condition        Report By
 HV9184  HISTORY     - 1991     MONUMENTED       MSI
 HV9184  HISTORY     - 19920129 GOOD             MSI
 HV9184  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV9184  HISTORY     - 20030909 GOOD             URS
 HV9184  HISTORY     - 20100611 GOOD             MDSHA
 HV9184
 HV9184                          STATION DESCRIPTION
 HV9184
 HV9184'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9184'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9184'2.4 MI (3.9 KM) WEST OF THE TOWN OF GLEN ECHO.  TO REACH THE STATION
 HV9184'FROM THE INTERSECTION OF MACARTHUR BOULEVARD AND GOLDSBORO ROAD (S.R.
 HV9184'614), PROCEED WEST ALONG MACARTHUR BOULEVARD FOR 2.4 MI (3.9 KM) TO
 HV9184'THE INTERSECTION WITH EGGART DRIVE (S.R. 996). TURN RIGHT ONTO EGGART
 HV9184'DRIVE AND TRAVEL 180 FT (54.9 M) NORTHEAST TO THE STATION ON THE
 HV9184'LEFT, SOUTHEAST OF THE GUARDRAIL.
 HV9184'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9184'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 207 1991.
 HV9184'THE STATION IS LOCATED ALONG THE NORTHWEST SIDE OF EGGART DRIVE, 70.4
 HV9184'FT (21.5 M) NORTH OF A SCHOOL BUS SIGN, 42.9 FT (13.1 M) NORTHWEST OF
 HV9184'A SPEED LIMIT SIGN, 16.2 FT (4.9 M) NORTHWEST OF THE CENTERLINE OF
 HV9184'EGGART DRIVE, 4.0 FT (1.2 M) SOUTHEAST OF THE GUARDRAIL ALONG THE
 HV9184'NORTHWEST SIDE OF EGGART DRIVE.
 HV9184
 HV9184                          STATION RECOVERY (1992)
 HV9184
 HV9184'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9184'RECOVERED IN GOOD CONDITION.
 HV9184
 HV9184                          STATION RECOVERY (2000)
 HV9184
 HV9184'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV9184'MARK NOT FOUND.
 HV9184
 HV9184                          STATION RECOVERY (2003)
 HV9184
 HV9184'RECOVERY NOTE BY URS COMPANY 2003 (JC)
 HV9184'RECOVERED IN GOOD CONDITION.
 HV9184
 HV9184                          STATION RECOVERY (2010)
 HV9184
 HV9184'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (JMR)
 HV9184'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9185 ***********************************************************************
 HV9185  DESIGNATION -  GPS 208
 HV9185  PID         -  HV9185
 HV9185  STATE/COUNTY-  MD/MONTGOMERY
 HV9185  COUNTRY     -  US
 HV9185  USGS QUAD   -  FALLS CHURCH (2019)
 HV9185
 HV9185                         *CURRENT SURVEY CONTROL
 HV9185  ______________________________________________________________________
 HV9185* NAD 83(2011) POSITION- 38 58 42.21682(N) 077 10 19.86555(W)   ADJUSTED
 HV9185* NAD 83(2011) ELLIP HT-    29.261 (meters)        (06/27/12)   ADJUSTED
 HV9185* NAD 83(2011) EPOCH   -  2010.00
 HV9185* NAVD 88 ORTHO HEIGHT -    61.046 (meters)      200.28  (feet) ADJUSTED
 HV9185  ______________________________________________________________________
 HV9185  GEOID HEIGHT    -        -31.795 (meters)                     GEOID18
 HV9185  NAD 83(2011) X  -  1,102,307.349 (meters)                     COMP
 HV9185  NAD 83(2011) Y  - -4,840,944.730 (meters)                     COMP
 HV9185  NAD 83(2011) Z  -  3,990,471.047 (meters)                     COMP
 HV9185  LAPLACE CORR    -         -2.16  (seconds)                    DEFLEC18
 HV9185  DYNAMIC HEIGHT  -         61.013 (meters)      200.17  (feet) COMP
 HV9185  MODELED GRAVITY -    980,096.8   (mgal)                       NAVD 88
 HV9185
 HV9185  VERT ORDER      -  THIRD
 HV9185
 HV9185  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9185  Standards:
 HV9185         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9185            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9185  -------------------------------------------------------------------
 HV9185  NETWORK    1.73   3.67           0.77   0.63   1.87      0.05159807
 HV9185  -------------------------------------------------------------------
 HV9185  Click here for local accuracies and other accuracy information.
 HV9185
 HV9185.The horizontal coordinates were established by GPS observations
 HV9185.and adjusted by the National Geodetic Survey in June 2012.
 HV9185
 HV9185.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9185.been affixed to the stable North American tectonic plate. See 
 HV9185.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9185
 HV9185.The horizontal coordinates are valid at the epoch date displayed above
 HV9185.which is a decimal equivalence of Year/Month/Day.
 HV9185
 HV9185.The orthometric height was determined by differential leveling and
 HV9185.adjusted by the NATIONAL GEODETIC SURVEY
 HV9185.in September 2004.
 HV9185
 HV9185.No vertical observational check was made to the station.
 HV9185
 HV9185.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9185.GEOID18 height accuracy estimate available here.
 HV9185
 HV9185.Click photographs - Photos may exist for this station.
 HV9185
 HV9185.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9185
 HV9185.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9185
 HV9185.The ellipsoidal height was determined by GPS observations
 HV9185.and is referenced to NAD 83.
 HV9185
 HV9185.The dynamic height is computed by dividing the NAVD 88
 HV9185.geopotential number by the normal gravity value computed on the
 HV9185.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9185.degrees latitude (g = 980.6199 gals.).
 HV9185
 HV9185.The modeled gravity was interpolated from observed gravity values.
 HV9185
 HV9185. The following values were computed from the NAD 83(2011) position.
 HV9185
 HV9185;                    North         East     Units Scale Factor Converg.
 HV9185;SPC MD       -   145,621.749   385,080.441   MT  0.99995145   -0 06 29.0
 HV9185;SPC MD       -   477,760.69  1,263,384.75   sFT  0.99995145   -0 06 29.0
 HV9185;SPC VA N     - 2,146,434.704 3,615,051.151   MT  0.99996818   +0 49 43.4
 HV9185;SPC VA N     - 7,042,094.52 11,860,380.32   sFT  0.99996818   +0 49 43.4
 HV9185;UTM  18      - 4,316,623.073   311,840.003   MT  1.00003597   -1 22 00.4
 HV9185
 HV9185!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9185!SPC MD       -   0.99999541  x   0.99995145  =   0.99994686
 HV9185!SPC VA N     -   0.99999541  x   0.99996818  =   0.99996359
 HV9185!UTM  18      -   0.99999541  x   1.00003597  =   1.00003138
 HV9185
 HV9185:                Primary Azimuth Mark                     Grid Az
 HV9185:SPC MD       -  GPS 209                                  110 48 06.2
 HV9185:SPC VA N     -  GPS 209                                  109 51 53.8
 HV9185:UTM  18      -  GPS 209                                  112 03 37.6
 HV9185
 HV9185_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1184016623(NAD 83)
 HV9185
 HV9185|---------------------------------------------------------------------|
 HV9185| PID    Reference Object                     Distance      Geod. Az  |
 HV9185|                                                           dddmmss.s |
 HV9185| HV9186 GPS 209                             APPROX. 1.0 KM 1104137.2 |
 HV9185|---------------------------------------------------------------------|
 HV9185
 HV9185                          SUPERSEDED SURVEY CONTROL
 HV9185
 HV9185  NAD 83(2007)-  38 58 42.21593(N)    077 10 19.86754(W) AD(2002.00) 0
 HV9185  ELLIP H (02/10/07)   29.300  (m)                       GP(2002.00)    
 HV9185  ELLIP H (08/30/02)   29.356  (m)                       GP(       ) 4 2
 HV9185  NAD 83(1993)-  38 58 42.21579(N)    077 10 19.86777(W) AD(       ) 2
 HV9185  ELLIP H (11/14/94)   29.305  (m)                       GP(       ) 4 2
 HV9185  NAD 83(1991)-  38 58 42.21497(N)    077 10 19.86997(W) AD(       ) 2
 HV9185  NGVD 29 (09/10/92)   61.3    (m)  GEOID90  model used  GPS OBS        
 HV9185
 HV9185.Superseded values are not recommended for survey control.
 HV9185
 HV9185.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9185.See file dsdata.pdf to determine how the superseded data were derived.
 HV9185
 HV9185_MARKER: DD = SURVEY DISK
 HV9185_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV9185_SP_SET: DRIVEN INTO GROUND
 HV9185_STAMPING: GPS 208 1991
 HV9185_MARK LOGO: VA-059
 HV9185_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9185_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9185+STABILITY: SURFACE MOTION
 HV9185_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9185+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 HV9185
 HV9185  HISTORY     - Date     Condition        Report By
 HV9185  HISTORY     - 1991     MONUMENTED       MSI
 HV9185  HISTORY     - 19920129 GOOD             MSI
 HV9185  HISTORY     - 20001106 MARK NOT FOUND   USPSQD
 HV9185  HISTORY     - 20100611 GOOD             MDSHA
 HV9185
 HV9185                          STATION DESCRIPTION
 HV9185
 HV9185'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9185'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9185'2.0 MI (3.2 KM) WEST OF THE TOWN OF GLEN ECHO.  TO REACH THE STATION
 HV9185'FROM THE INTERSECTION OF MACARTHUR BOULEVARD AND GOLDSBORO ROAD (S.R.
 HV9185'614), PROCEED WEST ALONG MACARTHUR BOULEVARD FOR 1.6 MI (2.6 KM) TO
 HV9185'THE INTERSECTION WITH PERSIMMON TREE ROAD (S.R. 191).  TURN RIGHT
 HV9185'ONTO PERSIMMON TREE ROAD AND TRAVEL 0.3 MI (0.5 KM) NORTHWEST TO THE
 HV9185'INTERSECTION WITH CARLYNN DRIVE.  TURN LEFT ONTO CARLYNN DRIVE AND
 HV9185'PROCEED 0.1 MI (0.2 KM) SOUTHWEST TO THE STATION ON THE RIGHT IN A
 HV9185'GRASSY AREA, BETWEEN THE NORTH EDGE OF CARLYNN DRIVE AND A WOODS
 HV9185'LINE, NORTHWEST OF RESIDENCE NUMBER 8404.
 HV9185'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9185'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 208 1991.
 HV9185'THE STATION IS LOCATED ALONG THE NORTH SIDE OF CARLYNN DRIVE, 77.0 FT
 HV9185'(23.5 M) NORTHEAST OF THE NORTHEASTERNMOST CORNER OF A CONCRETE CATCH
 HV9185'BASIN ON THE SOUTH SIDE OF CARLYNN DRIVE, 68.7 FT (20.9 M) NORTHEAST
 HV9185'OF THE SOUTHEASTERNMOST CORNER OF A CONCRETE CATCH BASIN ON THE NORTH
 HV9185'SIDE OF CARLYNN DRIVE, 65.5 FT (20.0 M) NORTH OF A 0.13 FT (0.04 M)
 HV9185'MAPLE TREE ON THE SOUTH SIDE OF CARLYNN DRIVE, 51.9 FT (15.8 M) EAST
 HV9185'OF A 0.5 FT (0.2 M) MAPLE TREE ON THE NORTH SIDE OF CARLYYN DRIVE,
 HV9185'AND 44.2 FT (13.5 M) NORTHWEST OF A 0.5 FT (0.2 M) MAPLE ON THE SOUTH
 HV9185'SIDE OF CARLYNN DRIVE.
 HV9185
 HV9185                          STATION RECOVERY (1992)
 HV9185
 HV9185'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9185'RECOVERED IN GOOD CONDITION.
 HV9185
 HV9185                          STATION RECOVERY (2000)
 HV9185
 HV9185'RECOVERY NOTE BY US POWER SQUADRON 2000 (JJS)
 HV9185'MARK NOT FOUND.
 HV9185
 HV9185                          STATION RECOVERY (2010)
 HV9185
 HV9185'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (JMR)
 HV9185'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9186 ***********************************************************************
 HV9186  DESIGNATION -  GPS 209
 HV9186  PID         -  HV9186
 HV9186  STATE/COUNTY-  MD/MONTGOMERY
 HV9186  COUNTRY     -  US
 HV9186  USGS QUAD   -  FALLS CHURCH (2019)
 HV9186
 HV9186                         *CURRENT SURVEY CONTROL
 HV9186  ______________________________________________________________________
 HV9186* NAD 83(2011) POSITION- 38 58 30.93652(N) 077 09 41.61494(W)   ADJUSTED
 HV9186* NAD 83(2011) ELLIP HT-    21.896 (meters)        (06/27/12)   ADJUSTED
 HV9186* NAD 83(2011) EPOCH   -  2010.00
 HV9186* NAVD 88 ORTHO HEIGHT -    53.680 (meters)      176.12  (feet) ADJUSTED
 HV9186  ______________________________________________________________________
 HV9186  GEOID HEIGHT    -        -31.811 (meters)                     GEOID18
 HV9186  NAD 83(2011) X  -  1,103,252.402 (meters)                     COMP
 HV9186  NAD 83(2011) Y  - -4,840,947.983 (meters)                     COMP
 HV9186  NAD 83(2011) Z  -  3,990,195.990 (meters)                     COMP
 HV9186  LAPLACE CORR    -         -2.16  (seconds)                    DEFLEC18
 HV9186  DYNAMIC HEIGHT  -         53.651 (meters)      176.02  (feet) COMP
 HV9186  MODELED GRAVITY -    980,095.6   (mgal)                       NAVD 88
 HV9186
 HV9186  VERT ORDER      -  THIRD
 HV9186
 HV9186  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9186  Standards:
 HV9186         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9186            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9186  -------------------------------------------------------------------
 HV9186  NETWORK    1.52   3.39           0.64   0.60   1.73      0.13329291
 HV9186  -------------------------------------------------------------------
 HV9186  Click here for local accuracies and other accuracy information.
 HV9186
 HV9186.The horizontal coordinates were established by GPS observations
 HV9186.and adjusted by the National Geodetic Survey in June 2012.
 HV9186
 HV9186.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9186.been affixed to the stable North American tectonic plate. See 
 HV9186.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9186
 HV9186.The horizontal coordinates are valid at the epoch date displayed above
 HV9186.which is a decimal equivalence of Year/Month/Day.
 HV9186
 HV9186.The orthometric height was determined by differential leveling and
 HV9186.adjusted by the NATIONAL GEODETIC SURVEY
 HV9186.in September 2004.
 HV9186
 HV9186.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9186.GEOID18 height accuracy estimate available here.
 HV9186
 HV9186.Click photographs - Photos may exist for this station.
 HV9186
 HV9186.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9186
 HV9186.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9186
 HV9186.The ellipsoidal height was determined by GPS observations
 HV9186.and is referenced to NAD 83.
 HV9186
 HV9186.The dynamic height is computed by dividing the NAVD 88
 HV9186.geopotential number by the normal gravity value computed on the
 HV9186.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9186.degrees latitude (g = 980.6199 gals.).
 HV9186
 HV9186.The modeled gravity was interpolated from observed gravity values.
 HV9186
 HV9186. The following values were computed from the NAD 83(2011) position.
 HV9186
 HV9186;                    North         East     Units Scale Factor Converg.
 HV9186;SPC MD       -   145,272.227   386,000.480   MT  0.99995135   -0 06 05.0
 HV9186;SPC MD       -   476,613.96  1,266,403.24   sFT  0.99995135   -0 06 05.0
 HV9186;SPC VA N     - 2,146,100.265 3,615,976.796   MT  0.99996784   +0 50 07.2
 HV9186;SPC VA N     - 7,040,997.29 11,863,417.20   sFT  0.99996784   +0 50 07.2
 HV9186;UTM  18      - 4,316,253.396   312,752.217   MT  1.00003175   -1 21 35.9
 HV9186
 HV9186!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9186!SPC MD       -   0.99999656  x   0.99995135  =   0.99994791
 HV9186!SPC VA N     -   0.99999656  x   0.99996784  =   0.99996440
 HV9186!UTM  18      -   0.99999656  x   1.00003175  =   1.00002831
 HV9186
 HV9186:                Primary Azimuth Mark                     Grid Az
 HV9186:SPC MD       -  GPS 210                                  106 34 48.4
 HV9186:SPC VA N     -  GPS 210                                  105 38 36.2
 HV9186:UTM  18      -  GPS 210                                  107 50 19.3
 HV9186
 HV9186_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1275216253(NAD 83)
 HV9186
 HV9186|---------------------------------------------------------------------|
 HV9186| PID    Reference Object                     Distance      Geod. Az  |
 HV9186|                                                           dddmmss.s |
 HV9186| HV9187 GPS 210                             APPROX. 0.9 KM 1062843.4 |
 HV9186|---------------------------------------------------------------------|
 HV9186
 HV9186                          SUPERSEDED SURVEY CONTROL
 HV9186
 HV9186  NAD 83(2007)-  38 58 30.93545(N)    077 09 41.61711(W) AD(2002.00) 0
 HV9186  ELLIP H (02/10/07)   21.926  (m)                       GP(2002.00)    
 HV9186  ELLIP H (08/30/02)   21.986  (m)                       GP(       ) 4 2
 HV9186  NAD 83(1993)-  38 58 30.93538(N)    077 09 41.61731(W) AD(       ) 2
 HV9186  ELLIP H (11/14/94)   21.938  (m)                       GP(       ) 4 2
 HV9186  NAD 83(1991)-  38 58 30.93448(N)    077 09 41.61954(W) AD(       ) 2
 HV9186  NGVD 29 (09/10/92)   54.0    (m)  GEOID90  model used  GPS OBS        
 HV9186
 HV9186.Superseded values are not recommended for survey control.
 HV9186
 HV9186.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9186.See file dsdata.pdf to determine how the superseded data were derived.
 HV9186
 HV9186_MARKER: DD = SURVEY DISK
 HV9186_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV9186_SP_SET: DRIVEN INTO GROUND
 HV9186_STAMPING: GPS 209 1991
 HV9186_MARK LOGO: VA-059
 HV9186_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9186_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9186+STABILITY: SURFACE MOTION
 HV9186_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9186+SATELLITE: SATELLITE OBSERVATIONS - April 12, 2004
 HV9186
 HV9186  HISTORY     - Date     Condition        Report By
 HV9186  HISTORY     - 1991     MONUMENTED       MSI
 HV9186  HISTORY     - 19920129 GOOD             MSI
 HV9186  HISTORY     - 20040412 GOOD             VA-059
 HV9186
 HV9186                          STATION DESCRIPTION
 HV9186
 HV9186'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9186'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9186'1.2 MI (1.9 KM) WEST OF THE TOWN OF GLEN ECHO.  TO REACH THE STATION
 HV9186'FROM THE INTERSECTION OF MACARTHUR BOULEVARD AND GOLDSBORO ROAD (S.R.
 HV9186'614), PROCEED WEST ALONG MACARTHUR BOULEVARD FOR 1.2 MI (1.9 KM) TO
 HV9186'THE INTERSECTION WITH SEVEN LOCKS ROAD.  TURN RIGHT ONTO SEVEN LOCKS
 HV9186'ROAD AND TRAVEL 0.05 MI (0.08 KM) NORTH TO THE STATION ON THE LEFT,
 HV9186'NORTH OF THE ENTRANCE TO MACARTHUR PLAZA.
 HV9186'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9186'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 209 1991.
 HV9186'THE STATION IS LOCATED ALONG THE WEST SIDE OF SEVEN LOCKS ROAD, 58.7
 HV9186'FT (17.9 M) NORTHWEST OF PEPCO POLE NUMBER 754415-0288, 62.0 FT
 HV9186'(18.9 M) NORTHEAST OF A 0.5 FT (0.2 M) TREE ON THE SOUTH SIDE AN
 HV9186'ASPHALT DRIVEWAY, 35.5 FT (10.8 M) NORTHWEST OF A 0.18 FT (0.05 M)
 HV9186'TREE ON THE NORTH SIDE OF AN ASPHALT DRIVEWAY, AND 23.7 FT (7.2 M)
 HV9186'SOUTHWEST OF A SEWER MANHOLE IN SEVEN LOCKS ROAD.
 HV9186
 HV9186                          STATION RECOVERY (1992)
 HV9186
 HV9186'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9186'RECOVERED IN GOOD CONDITION.
 HV9186
 HV9186                          STATION RECOVERY (2004)
 HV9186
 HV9186'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2004 (DRJ)
 HV9186'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9187 ***********************************************************************
 HV9187  DESIGNATION -  GPS 210
 HV9187  PID         -  HV9187
 HV9187  STATE/COUNTY-  MD/MONTGOMERY
 HV9187  COUNTRY     -  US
 HV9187  USGS QUAD   -  FALLS CHURCH (2019)
 HV9187
 HV9187                         *CURRENT SURVEY CONTROL
 HV9187  ______________________________________________________________________
 HV9187* NAD 83(2011) POSITION- 38 58 22.23840(N) 077 09 03.95371(W)   ADJUSTED
 HV9187* NAD 83(2011) ELLIP HT-    13.403 (meters)        (06/27/12)   ADJUSTED
 HV9187* NAD 83(2011) EPOCH   -  2010.00
 HV9187* NAVD 88 ORTHO HEIGHT -    45.203 (meters)      148.30  (feet) ADJUSTED
 HV9187  ______________________________________________________________________
 HV9187  GEOID HEIGHT    -        -31.826 (meters)                     GEOID18
 HV9187  NAD 83(2011) X  -  1,104,172.326 (meters)                     COMP
 HV9187  NAD 83(2011) Y  - -4,840,904.508 (meters)                     COMP
 HV9187  NAD 83(2011) Z  -  3,989,982.118 (meters)                     COMP
 HV9187  LAPLACE CORR    -         -1.94  (seconds)                    DEFLEC18
 HV9187  DYNAMIC HEIGHT  -         45.179 (meters)      148.22  (feet) COMP
 HV9187  MODELED GRAVITY -    980,094.9   (mgal)                       NAVD 88
 HV9187
 HV9187  VERT ORDER      -  THIRD
 HV9187
 HV9187  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9187  Standards:
 HV9187         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9187            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9187  -------------------------------------------------------------------
 HV9187  NETWORK    1.63   3.57           0.69   0.64   1.82      0.12124215
 HV9187  -------------------------------------------------------------------
 HV9187  Click here for local accuracies and other accuracy information.
 HV9187
 HV9187.The horizontal coordinates were established by GPS observations
 HV9187.and adjusted by the National Geodetic Survey in June 2012.
 HV9187
 HV9187.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9187.been affixed to the stable North American tectonic plate. See 
 HV9187.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9187
 HV9187.The horizontal coordinates are valid at the epoch date displayed above
 HV9187.which is a decimal equivalence of Year/Month/Day.
 HV9187
 HV9187.The orthometric height was determined by differential leveling and
 HV9187.adjusted by the NATIONAL GEODETIC SURVEY
 HV9187.in September 2004.
 HV9187
 HV9187.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9187.GEOID18 height accuracy estimate available here.
 HV9187
 HV9187.Click photographs - Photos may exist for this station.
 HV9187
 HV9187.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9187
 HV9187.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9187
 HV9187.The ellipsoidal height was determined by GPS observations
 HV9187.and is referenced to NAD 83.
 HV9187
 HV9187.The dynamic height is computed by dividing the NAVD 88
 HV9187.geopotential number by the normal gravity value computed on the
 HV9187.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9187.degrees latitude (g = 980.6199 gals.).
 HV9187
 HV9187.The modeled gravity was interpolated from observed gravity values.
 HV9187
 HV9187. The following values were computed from the NAD 83(2011) position.
 HV9187
 HV9187;                    North         East     Units Scale Factor Converg.
 HV9187;SPC MD       -   145,002.460   386,906.544   MT  0.99995128   -0 05 41.4
 HV9187;SPC MD       -   475,728.90  1,269,375.89   sFT  0.99995128   -0 05 41.4
 HV9187;SPC VA N     - 2,145,845.342 3,616,887.164   MT  0.99996757   +0 50 30.7
 HV9187;SPC VA N     - 7,040,160.93 11,866,403.97   sFT  0.99996757   +0 50 30.7
 HV9187;UTM  18      - 4,315,963.770   313,652.208   MT  1.00002761   -1 21 12.0
 HV9187
 HV9187!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9187!SPC MD       -   0.99999790  x   0.99995128  =   0.99994918
 HV9187!SPC VA N     -   0.99999790  x   0.99996757  =   0.99996547
 HV9187!UTM  18      -   0.99999790  x   1.00002761  =   1.00002551
 HV9187
 HV9187:                Primary Azimuth Mark                     Grid Az
 HV9187:SPC MD       -  GPS 211                                  112 55 37.5
 HV9187:SPC VA N     -  GPS 211                                  111 59 25.4
 HV9187:UTM  18      -  GPS 211                                  114 11 08.1
 HV9187
 HV9187_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1365215963(NAD 83)
 HV9187
 HV9187|---------------------------------------------------------------------|
 HV9187| PID    Reference Object                     Distance      Geod. Az  |
 HV9187|                                                           dddmmss.s |
 HV9187| HV9188 GPS 211                             APPROX. 1.1 KM 1124956.1 |
 HV9187|---------------------------------------------------------------------|
 HV9187
 HV9187                          SUPERSEDED SURVEY CONTROL
 HV9187
 HV9187  NAD 83(2007)-  38 58 22.23696(N)    077 09 03.95612(W) AD(2002.00) 0
 HV9187  ELLIP H (02/10/07)   13.425  (m)                       GP(2002.00)    
 HV9187  ELLIP H (08/30/02)   13.486  (m)                       GP(       ) 4 2
 HV9187  NAD 83(1993)-  38 58 22.23695(N)    077 09 03.95630(W) AD(       ) 2
 HV9187  ELLIP H (11/14/94)   13.440  (m)                       GP(       ) 4 2
 HV9187  NAD 83(1991)-  38 58 22.23599(N)    077 09 03.95856(W) AD(       ) 2
 HV9187  NGVD 29 (09/10/92)   45.5    (m)  GEOID90  model used  GPS OBS        
 HV9187
 HV9187.Superseded values are not recommended for survey control.
 HV9187
 HV9187.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9187.See file dsdata.pdf to determine how the superseded data were derived.
 HV9187
 HV9187_MARKER: DD = SURVEY DISK
 HV9187_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV9187_SP_SET: DRIVEN INTO GROUND
 HV9187_STAMPING: GPS 210 1991
 HV9187_MARK LOGO: VA-059
 HV9187_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9187_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9187+STABILITY: SURFACE MOTION
 HV9187_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9187+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 HV9187
 HV9187  HISTORY     - Date     Condition        Report By
 HV9187  HISTORY     - 1991     MONUMENTED       MSI
 HV9187  HISTORY     - 19920129 GOOD             MSI
 HV9187
 HV9187                          STATION DESCRIPTION
 HV9187
 HV9187'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9187'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9187'0.7 MI (1.1 KM) NORTHWEST OF THE TOWN OF GLEN ECHO.  TO REACH THE
 HV9187'STATION FROM THE INTERSECTION OF MACARTHUR BOULEVARD AND GOLDSBORO
 HV9187'ROAD (S.R. 614), PROCEED NORTHWEST ALONG MACARTHUR BOULEVARD FOR 0.7
 HV9187'MI (1.1 KM) TO THE STATION ON THE RIGHT IN CABIN JOHN CREEK PARK.
 HV9187'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9187'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 210 1991.
 HV9187'THE STATION IS LOCATED NEAR A DUGOUT AT THE SOUTH SIDE OF A BASEBALL
 HV9187'FIELD,79 FT EAST OF A 0.5 FT (0.2 M) CHERRY TREE, 58.0 FT (17.7 M)
 HV9187'NORTHWEST OF A .18 FT (0.05 M) PINE TREE, 57.8 FT (17.6 M) EAST OF
 HV9187'BOUNDARY STONE 60, 22.7 FT (6.9 M) NORTHWEST OF PEPCO LIGHT POLE
 HV9187'NUMBER 756414-9595, 16.0 FT (4.9 M) NORTHEAST OF THE WESTERN END OF A
 HV9187'CHAIN LINK FENCE, AND 10.4 FT (3.2 M) NORTHWEST OF THE EASTERN END OF
 HV9187'A CHAIN LINK FENCE.
 HV9187
 HV9187                          STATION RECOVERY (1992)
 HV9187
 HV9187'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9187'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9188 ***********************************************************************
 HV9188  DESIGNATION -  GPS 211
 HV9188  PID         -  HV9188
 HV9188  STATE/COUNTY-  MD/MONTGOMERY
 HV9188  COUNTRY     -  US
 HV9188  USGS QUAD   -  FALLS CHURCH (2019)
 HV9188
 HV9188                         *CURRENT SURVEY CONTROL
 HV9188  ______________________________________________________________________
 HV9188* NAD 83(2011) POSITION- 38 58 07.92038(N) 077 08 20.39763(W)   ADJUSTED
 HV9188* NAD 83(2011) ELLIP HT-    14.605 (meters)        (06/27/12)   ADJUSTED
 HV9188* NAD 83(2011) EPOCH   -  2010.00
 HV9188* NAVD 88 ORTHO HEIGHT -    46.440 (meters)      152.36  (feet) ADJUSTED
 HV9188  ______________________________________________________________________
 HV9188  GEOID HEIGHT    -        -31.842 (meters)                     GEOID18
 HV9188  NAD 83(2011) X  -  1,105,256.553 (meters)                     COMP
 HV9188  NAD 83(2011) Y  - -4,840,942.873 (meters)                     COMP
 HV9188  NAD 83(2011) Z  -  3,989,639.598 (meters)                     COMP
 HV9188  LAPLACE CORR    -         -1.80  (seconds)                    DEFLEC18
 HV9188  DYNAMIC HEIGHT  -         46.415 (meters)      152.28  (feet) COMP
 HV9188  MODELED GRAVITY -    980,094.0   (mgal)                       NAVD 88
 HV9188
 HV9188  VERT ORDER      -  THIRD
 HV9188
 HV9188  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9188  Standards:
 HV9188         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9188            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9188  -------------------------------------------------------------------
 HV9188  NETWORK    1.63   3.59           0.67   0.66   1.83      0.18071588
 HV9188  -------------------------------------------------------------------
 HV9188  Click here for local accuracies and other accuracy information.
 HV9188
 HV9188.The horizontal coordinates were established by GPS observations
 HV9188.and adjusted by the National Geodetic Survey in June 2012.
 HV9188
 HV9188.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9188.been affixed to the stable North American tectonic plate. See 
 HV9188.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9188
 HV9188.The horizontal coordinates are valid at the epoch date displayed above
 HV9188.which is a decimal equivalence of Year/Month/Day.
 HV9188
 HV9188.The orthometric height was determined by differential leveling and
 HV9188.adjusted by the NATIONAL GEODETIC SURVEY
 HV9188.in September 2004.
 HV9188
 HV9188.No vertical observational check was made to the station.
 HV9188
 HV9188.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9188.GEOID18 height accuracy estimate available here.
 HV9188
 HV9188.Click photographs - Photos may exist for this station.
 HV9188
 HV9188.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9188
 HV9188.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9188
 HV9188.The ellipsoidal height was determined by GPS observations
 HV9188.and is referenced to NAD 83.
 HV9188
 HV9188.The dynamic height is computed by dividing the NAVD 88
 HV9188.geopotential number by the normal gravity value computed on the
 HV9188.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9188.degrees latitude (g = 980.6199 gals.).
 HV9188
 HV9188.The modeled gravity was interpolated from observed gravity values.
 HV9188
 HV9188. The following values were computed from the NAD 83(2011) position.
 HV9188
 HV9188;                    North         East     Units Scale Factor Converg.
 HV9188;SPC MD       -   144,559.285   387,954.305   MT  0.99995116   -0 05 14.1
 HV9188;SPC MD       -   474,274.92  1,272,813.42   sFT  0.99995116   -0 05 14.1
 HV9188;SPC VA N     - 2,145,419.348 3,617,942.047   MT  0.99996715   +0 50 57.9
 HV9188;SPC VA N     - 7,038,763.31 11,869,864.87   sFT  0.99996715   +0 50 57.9
 HV9188;UTM  18      - 4,315,497.656   314,690.061   MT  1.00002286   -1 20 44.1
 HV9188
 HV9188!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9188!SPC MD       -   0.99999771  x   0.99995116  =   0.99994887
 HV9188!SPC VA N     -   0.99999771  x   0.99996715  =   0.99996486
 HV9188!UTM  18      -   0.99999771  x   1.00002286  =   1.00002057
 HV9188
 HV9188:                Primary Azimuth Mark                     Grid Az
 HV9188:SPC MD       -  GPS 212                                  116 27 14.6
 HV9188:SPC VA N     -  GPS 212                                  115 31 02.6
 HV9188:UTM  18      -  GPS 212                                  117 42 44.6
 HV9188
 HV9188_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1469015497(NAD 83)
 HV9188
 HV9188|---------------------------------------------------------------------|
 HV9188| PID    Reference Object                     Distance      Geod. Az  |
 HV9188|                                                           dddmmss.s |
 HV9188| HV9189 GPS 212                             APPROX. 1.1 KM 1162200.5 |
 HV9188|---------------------------------------------------------------------|
 HV9188
 HV9188                          SUPERSEDED SURVEY CONTROL
 HV9188
 HV9188  NAD 83(2007)-  38 58 07.91851(N)    077 08 20.40057(W) AD(2002.00) 0
 HV9188  ELLIP H (02/10/07)   14.642  (m)                       GP(2002.00)    
 HV9188  ELLIP H (08/30/02)   14.704  (m)                       GP(       ) 4 2
 HV9188  NAD 83(1993)-  38 58 07.91854(N)    077 08 20.40075(W) AD(       ) 2
 HV9188  ELLIP H (11/14/94)   14.662  (m)                       GP(       ) 4 2
 HV9188  NAD 83(1991)-  38 58 07.91753(N)    077 08 20.40302(W) AD(       ) 2
 HV9188  NGVD 29 (09/10/92)   46.7    (m)  GEOID90  model used  GPS OBS        
 HV9188
 HV9188.Superseded values are not recommended for survey control.
 HV9188
 HV9188.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9188.See file dsdata.pdf to determine how the superseded data were derived.
 HV9188
 HV9188_MARKER: DD = SURVEY DISK
 HV9188_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV9188_SP_SET: DRIVEN INTO GROUND
 HV9188_STAMPING: GPS 211 1991
 HV9188_MARK LOGO: VA-059
 HV9188_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9188_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9188+STABILITY: SURFACE MOTION
 HV9188_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9188+SATELLITE: SATELLITE OBSERVATIONS - April 12, 2004
 HV9188
 HV9188  HISTORY     - Date     Condition        Report By
 HV9188  HISTORY     - 1991     MONUMENTED       MSI
 HV9188  HISTORY     - 19920129 GOOD             MSI
 HV9188  HISTORY     - 20040412 GOOD             VA-059
 HV9188
 HV9188                          STATION DESCRIPTION
 HV9188
 HV9188'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9188'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND IN THE TOWN OF
 HV9188'GLEN ECHO.  TO REACH THE STATION FROM THE INTERSECTION OF MACARTHUR
 HV9188'BOULEVARD AND SEVEN LOCKS ROAD, PROCEED EAST ALONG MACARTHUR
 HV9188'BOULEVARD FOR 1.2 MI (1.9 KM) TO THE CIRCULAR INTERSECTION WITH
 HV9188'GOLDSBORO ROAD (S.R. 614)AND THE STATION IN THE NORTHERN OF THE TWO
 HV9188'MOST WESTERN MEDIANS.
 HV9188'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9188'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 211 1991.
 HV9188'THE STATION IS LOCATED NEAR THE SOUTHEASTERN END OF THE MEDIAN, 42.4
 HV9188'FT (12.9 M) SOUTHWEST OF THE SOUTHWESTERNMOST CORNER OF A CATCH BASIN
 HV9188'ON THE NORTHEAST SIDE OF MACARTHUR BOULEVARD, 28.7 FT (8.7 M)
 HV9188'NORTHEAST OF THE NORTHWESTERNMOST TIP OF THE SOUTHWESTERNMOST GRASS
 HV9188'ISLAND (OPPOSITE A CHAIN LINK AND BARBED WIRE FENCE AROUND FEDERAL
 HV9188'PROPERTY, 27.5 FT (8.4 M) EAST OF THE SOUTHEASTERNMOST CORNER OF A
 HV9188'DROP INLET, AND 22.3 FT (6.8 M) NORTH OF A SEWER MANHOLE.
 HV9188
 HV9188                          STATION RECOVERY (1992)
 HV9188
 HV9188'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9188'RECOVERED IN GOOD CONDITION.
 HV9188
 HV9188                          STATION RECOVERY (2004)
 HV9188
 HV9188'RECOVERY NOTE BY FAIRFAX COUNTY VIRGINIA 2004 (DRJ)
 HV9188'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9189 ***********************************************************************
 HV9189  DESIGNATION -  GPS 212
 HV9189  PID         -  HV9189
 HV9189  STATE/COUNTY-  MD/MONTGOMERY
 HV9189  COUNTRY     -  US
 HV9189  USGS QUAD   -  FALLS CHURCH (2019)
 HV9189
 HV9189                         *CURRENT SURVEY CONTROL
 HV9189  ______________________________________________________________________
 HV9189* NAD 83(2011) POSITION- 38 57 52.36575(N) 077 07 40.20774(W)   ADJUSTED
 HV9189* NAD 83(2011) ELLIP HT-    46.449 (meters)        (06/27/12)   ADJUSTED
 HV9189* NAD 83(2011) EPOCH   -  2010.00
 HV9189* NAVD 88 ORTHO HEIGHT -    78.324 (meters)      256.97  (feet) ADJUSTED
 HV9189  ______________________________________________________________________
 HV9189  GEOID HEIGHT    -        -31.859 (meters)                     GEOID18
 HV9189  NAD 83(2011) X  -  1,106,272.487 (meters)                     COMP
 HV9189  NAD 83(2011) Y  - -4,841,045.630 (meters)                     COMP
 HV9189  NAD 83(2011) Z  -  3,989,286.676 (meters)                     COMP
 HV9189  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 HV9189  DYNAMIC HEIGHT  -         78.282 (meters)      256.83  (feet) COMP
 HV9189  MODELED GRAVITY -    980,093.0   (mgal)                       NAVD 88
 HV9189
 HV9189  VERT ORDER      -  THIRD
 HV9189
 HV9189  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9189  Standards:
 HV9189         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9189            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9189  -------------------------------------------------------------------
 HV9189  NETWORK    1.57   3.23           0.64   0.64   1.65      0.18793911
 HV9189  -------------------------------------------------------------------
 HV9189  Click here for local accuracies and other accuracy information.
 HV9189
 HV9189.The horizontal coordinates were established by GPS observations
 HV9189.and adjusted by the National Geodetic Survey in June 2012.
 HV9189
 HV9189.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9189.been affixed to the stable North American tectonic plate. See 
 HV9189.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9189
 HV9189.The horizontal coordinates are valid at the epoch date displayed above
 HV9189.which is a decimal equivalence of Year/Month/Day.
 HV9189
 HV9189.The orthometric height was determined by differential leveling and
 HV9189.adjusted by the NATIONAL GEODETIC SURVEY
 HV9189.in September 2004.
 HV9189
 HV9189.No vertical observational check was made to the station.
 HV9189
 HV9189.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9189.GEOID18 height accuracy estimate available here.
 HV9189
 HV9189.Click photographs - Photos may exist for this station.
 HV9189
 HV9189.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9189
 HV9189.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9189
 HV9189.The ellipsoidal height was determined by GPS observations
 HV9189.and is referenced to NAD 83.
 HV9189
 HV9189.The dynamic height is computed by dividing the NAVD 88
 HV9189.geopotential number by the normal gravity value computed on the
 HV9189.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9189.degrees latitude (g = 980.6199 gals.).
 HV9189
 HV9189.The modeled gravity was interpolated from observed gravity values.
 HV9189
 HV9189. The following values were computed from the NAD 83(2011) position.
 HV9189
 HV9189;                    North         East     Units Scale Factor Converg.
 HV9189;SPC MD       -   144,078.229   388,921.093   MT  0.99995104   -0 04 48.8
 HV9189;SPC MD       -   472,696.66  1,275,985.29   sFT  0.99995104   -0 04 48.8
 HV9189;SPC VA N     - 2,144,954.153 3,618,916.585   MT  0.99996669   +0 51 23.0
 HV9189;SPC VA N     - 7,037,237.08 11,873,062.16   sFT  0.99996669   +0 51 23.0
 HV9189;UTM  18      - 4,314,995.452   315,646.119   MT  1.00001851   -1 20 18.4
 HV9189
 HV9189!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9189!SPC MD       -   0.99999271  x   0.99995104  =   0.99994375
 HV9189!SPC VA N     -   0.99999271  x   0.99996669  =   0.99995940
 HV9189!UTM  18      -   0.99999271  x   1.00001851  =   1.00001122
 HV9189
 HV9189:                Primary Azimuth Mark                     Grid Az
 HV9189:SPC MD       -  GPS 211                                  296 27 14.6
 HV9189:SPC VA N     -  GPS 211                                  295 31 02.8
 HV9189:UTM  18      -  GPS 211                                  297 42 44.2
 HV9189
 HV9189_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1564614995(NAD 83)
 HV9189
 HV9189|---------------------------------------------------------------------|
 HV9189| PID    Reference Object                     Distance      Geod. Az  |
 HV9189|                                                           dddmmss.s |
 HV9189| HV9188 GPS 211                             APPROX. 1.1 KM 2962225.8 |
 HV9189|---------------------------------------------------------------------|
 HV9189
 HV9189                          SUPERSEDED SURVEY CONTROL
 HV9189
 HV9189  NAD 83(2007)-  38 57 52.36363(N)    077 07 40.21109(W) AD(2002.00) 0
 HV9189  ELLIP H (02/10/07)   46.484  (m)                       GP(2002.00)    
 HV9189  ELLIP H (08/30/02)   46.548  (m)                       GP(       ) 4 2
 HV9189  NAD 83(1993)-  38 57 52.36369(N)    077 07 40.21123(W) AD(       ) 2
 HV9189  ELLIP H (11/14/94)   46.508  (m)                       GP(       ) 4 2
 HV9189  NAD 83(1991)-  38 57 52.36265(N)    077 07 40.21354(W) AD(       ) 2
 HV9189  NGVD 29 (09/10/92)   78.6    (m)  GEOID90  model used  GPS OBS        
 HV9189
 HV9189.Superseded values are not recommended for survey control.
 HV9189
 HV9189.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9189.See file dsdata.pdf to determine how the superseded data were derived.
 HV9189
 HV9189_MARKER: DD = SURVEY DISK
 HV9189_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HV9189_STAMPING: GPS 212 1991
 HV9189_MARK LOGO: VA-059
 HV9189_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9189_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9189+STABILITY: SURFACE MOTION
 HV9189_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9189+SATELLITE: SATELLITE OBSERVATIONS - November 15, 2002
 HV9189
 HV9189  HISTORY     - Date     Condition        Report By
 HV9189  HISTORY     - 1991     MONUMENTED       MSI
 HV9189  HISTORY     - 19920129 GOOD             MSI
 HV9189  HISTORY     - 19970813 GOOD             DMW
 HV9189  HISTORY     - 20021115 GOOD             POWELL
 HV9189  HISTORY     - 20100116 GOOD             NGS
 HV9189
 HV9189                          STATION DESCRIPTION
 HV9189
 HV9189'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9189'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9189'0.8 MI (1.3 KM) SOUTHEAST OF THE TOWN OF GLEN ECHO.  TO REACH THE
 HV9189'STATION FROM THE INTERSECTION OF MACARTHUR BOULEVARD AND GOLDSBORO
 HV9189'ROAD (S.R. 614), PROCEED SOUTHEAST ALONG MACARTHUR BOULEVARD FOR 0.8
 HV9189'MI (1.3 KM) TO THE INTERSECTION WITH WALHONDING ROAD.  TURN LEFT ONTO
 HV9189'WALHONDING ROAD AND TRAVEL 0.45 MI (0.72 KM) NORTH TO THE STATION ON
 HV9189'THE LEFT.
 HV9189'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9189'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 212 1991.
 HV9189'THE STATION IS LOCATED BETWEEN, AND IN FRONT OF, RESIDENCE NUMBERS
 HV9189'6225 AND 6219, 48.5 FT (14.8 M) NORTHWEST OF PEPCO POLE NUMBER
 HV9189'763411-5487, 46.3 FT (14.1 M) NORTHEAST OF THE NORTHEASTERNMOST
 HV9189'CORNER OF A CATCH BASIN ON THE SOUTH SIDE OF WALHONDING ROAD, 31.2 FT
 HV9189'(9.5 M) SOUTHEAST OF THE SOUTHERN MOST END OF A CHAINLINK FENCE, AND
 HV9189'9.0 FT (2.7 M) SOUTHWEST OF THE SOUTHWESTERNMOST CORNER OF A BRICK
 HV9189'AND IRON DROP INLET.
 HV9189
 HV9189                          STATION RECOVERY (1992)
 HV9189
 HV9189'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9189'RECOVERED IN GOOD CONDITION.
 HV9189
 HV9189                          STATION RECOVERY (1997)
 HV9189
 HV9189'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (JMS)
 HV9189'RECOVERED AS DESCRIBED.
 HV9189
 HV9189                          STATION RECOVERY (2002)
 HV9189
 HV9189'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 HV9189'RECOVERED IN GOOD CONDITION.
 HV9189
 HV9189                          STATION RECOVERY (2010)
 HV9189
 HV9189'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HV9189'MARK IS LOCATED ON THE STREET RIGHT-OF-WAY ON ADJOINING THE PROPERTY
 HV9189'AT 6221 WALHONDING RD AND IS RECESSED 0.1 M (0.3 FT).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9190 ***********************************************************************
 HV9190  DESIGNATION -  GPS 213
 HV9190  PID         -  HV9190
 HV9190  STATE/COUNTY-  MD/MONTGOMERY
 HV9190  COUNTRY     -  US
 HV9190  USGS QUAD   -  WASHINGTON WEST (2016)
 HV9190
 HV9190                         *CURRENT SURVEY CONTROL
 HV9190  ______________________________________________________________________
 HV9190* NAD 83(2011) POSITION- 38 56 57.00556(N) 077 07 11.48742(W)   ADJUSTED
 HV9190* NAD 83(2011) ELLIP HT-    38.861 (meters)        (06/27/12)   ADJUSTED
 HV9190* NAD 83(2011) EPOCH   -  2010.00
 HV9190* NAVD 88 ORTHO HEIGHT -    70.797 (meters)      232.27  (feet) ADJUSTED
 HV9190  ______________________________________________________________________
 HV9190  GEOID HEIGHT    -        -31.890 (meters)                     GEOID18
 HV9190  NAD 83(2011) X  -  1,107,184.494 (meters)                     COMP
 HV9190  NAD 83(2011) Y  - -4,841,932.148 (meters)                     COMP
 HV9190  NAD 83(2011) Z  -  3,987,954.372 (meters)                     COMP
 HV9190  LAPLACE CORR    -         -2.06  (seconds)                    DEFLEC18
 HV9190  DYNAMIC HEIGHT  -         70.759 (meters)      232.15  (feet) COMP
 HV9190  MODELED GRAVITY -    980,093.1   (mgal)                       NAVD 88
 HV9190
 HV9190  VERT ORDER      -  THIRD
 HV9190
 HV9190  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9190  Standards:
 HV9190         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9190            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9190  -------------------------------------------------------------------
 HV9190  NETWORK    1.51   2.84           0.61   0.62   1.45      0.22328140
 HV9190  -------------------------------------------------------------------
 HV9190  Click here for local accuracies and other accuracy information.
 HV9190
 HV9190.The horizontal coordinates were established by GPS observations
 HV9190.and adjusted by the National Geodetic Survey in June 2012.
 HV9190
 HV9190.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9190.been affixed to the stable North American tectonic plate. See 
 HV9190.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9190
 HV9190.The horizontal coordinates are valid at the epoch date displayed above
 HV9190.which is a decimal equivalence of Year/Month/Day.
 HV9190
 HV9190.The orthometric height was determined by differential leveling and
 HV9190.adjusted by the NATIONAL GEODETIC SURVEY
 HV9190.in September 2004.
 HV9190
 HV9190.No vertical observational check was made to the station.
 HV9190
 HV9190.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9190.GEOID18 height accuracy estimate available here.
 HV9190
 HV9190.Click photographs - Photos may exist for this station.
 HV9190
 HV9190.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9190
 HV9190.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9190
 HV9190.The ellipsoidal height was determined by GPS observations
 HV9190.and is referenced to NAD 83.
 HV9190
 HV9190.The dynamic height is computed by dividing the NAVD 88
 HV9190.geopotential number by the normal gravity value computed on the
 HV9190.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9190.degrees latitude (g = 980.6199 gals.).
 HV9190
 HV9190.The modeled gravity was interpolated from observed gravity values.
 HV9190
 HV9190. The following values were computed from the NAD 83(2011) position.
 HV9190
 HV9190;                    North         East     Units Scale Factor Converg.
 HV9190;SPC MD       -   142,370.212   389,610.256   MT  0.99995066   -0 04 30.8
 HV9190;SPC MD       -   467,092.94  1,278,246.31   sFT  0.99995066   -0 04 30.8
 HV9190;SPC VA N     - 2,143,257.604 3,619,633.587   MT  0.99996510   +0 51 40.9
 HV9190;SPC VA N     - 7,031,670.99 11,875,414.53   sFT  0.99996510   +0 51 40.9
 HV9190;UTM  18      - 4,313,272.603   316,297.661   MT  1.00001556   -1 19 58.7
 HV9190
 HV9190!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9190!SPC MD       -   0.99999390  x   0.99995066  =   0.99994456
 HV9190!SPC VA N     -   0.99999390  x   0.99996510  =   0.99995900
 HV9190!UTM  18      -   0.99999390  x   1.00001556  =   1.00000946
 HV9190
 HV9190:                Primary Azimuth Mark                     Grid Az
 HV9190:SPC MD       -  GPS 214                                  183 26 20.2
 HV9190:SPC VA N     -  GPS 214                                  182 30 08.5
 HV9190:UTM  18      -  GPS 214                                  184 41 48.1
 HV9190
 HV9190_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1629713272(NAD 83)
 HV9190
 HV9190|---------------------------------------------------------------------|
 HV9190| PID    Reference Object                     Distance      Geod. Az  |
 HV9190|                                                           dddmmss.s |
 HV9190| HV9191 GPS 214                             APPROX. 1.1 KM 1832149.4 |
 HV9190|---------------------------------------------------------------------|
 HV9190
 HV9190                          SUPERSEDED SURVEY CONTROL
 HV9190
 HV9190  NAD 83(2007)-  38 56 57.00272(N)    077 07 11.49184(W) AD(2002.00) 0
 HV9190  ELLIP H (02/10/07)   38.938  (m)                       GP(2002.00)    
 HV9190  ELLIP H (08/30/02)   39.005  (m)                       GP(       ) 4 2
 HV9190  NAD 83(1993)-  38 56 57.00278(N)    077 07 11.49200(W) AD(       ) 2
 HV9190  ELLIP H (11/14/94)   38.971  (m)                       GP(       ) 4 2
 HV9190  NAD 83(1991)-  38 56 57.00169(N)    077 07 11.49425(W) AD(       ) 2
 HV9190  NGVD 29 (09/10/92)   71.1    (m)  GEOID90  model used  GPS OBS        
 HV9190
 HV9190.Superseded values are not recommended for survey control.
 HV9190
 HV9190.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9190.See file dsdata.pdf to determine how the superseded data were derived.
 HV9190
 HV9190_MARKER: DD = SURVEY DISK
 HV9190_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV9190_SP_SET: DRIVEN INTO GROUND
 HV9190_STAMPING: GPS 213 1991
 HV9190_MARK LOGO: VA-059
 HV9190_MAGNETIC: I = MARKER IS A STEEL ROD
 HV9190_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9190+STABILITY: SURFACE MOTION
 HV9190_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9190+SATELLITE: SATELLITE OBSERVATIONS - January 29, 1992
 HV9190
 HV9190  HISTORY     - Date     Condition        Report By
 HV9190  HISTORY     - 1991     MONUMENTED       MSI
 HV9190  HISTORY     - 19920129 GOOD             MSI
 HV9190  HISTORY     - 20021203 MARK NOT FOUND   POWELL
 HV9190
 HV9190                          STATION DESCRIPTION
 HV9190
 HV9190'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9190'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9190'1.8 MI (2.9 KM) SOUTHEAST OF THE TOWN OF GLEN ECHO.  TO REACH THE
 HV9190'STATION FROM THE INTERSECTION OF MACARTHUR BOULEVARD AND GOLDSBORO
 HV9190'ROAD (S.R. 614), PROCEED SOUTHEAST ALONG MACARTHUR BOULEVARD FOR 2.05
 HV9190'MI (3.30 KM) TO THE INTERSECTION WITH SANGAMORE ROAD.  TURN LEFT ONTO
 HV9190'SANGAMORE ROAD AND TRAVEL 0.35 MI (0.56 KM) NORTH TO ENTRANCE TO
 HV9190'LITTLE FALLS MALL AND THE STATION AT THE BOTTOM OF AN EMBANKMENT,
 HV9190'WEST OF THE SIXTH PARKING SPACE FROM THE SOUTHWESTERNMOST CORNER OF
 HV9190'THE PARKING AREA.
 HV9190'THE STATION IS A STEEL REBAR WITH AN ALUMINUM FAIRFAX COUNTY CAP SET
 HV9190'APPROXIMATELY FLUSH WITH THE GROUND SURFACE, STAMPED GPS 213 1991.
 HV9190'THE STATION IS LOCATED 79.8 FT (24.3 M) SOUTHWEST OF A LIGHT POLE
 HV9190'WITH A CONCRETE BASE, 67.4 FT (20.5 M) WEST OF A 1.0 FT (0.3 M) OAK
 HV9190'TREE IN A RAILROAD TIE PLANTER, AND 17.0 FT (5.2 M) NORTHWEST OF
 HV9190'ANOTHER LIGHT POLE WITH A CONCRETE BASE.
 HV9190
 HV9190                          STATION RECOVERY (1992)
 HV9190
 HV9190'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9190'RECOVERED IN GOOD CONDITION.
 HV9190
 HV9190                          STATION RECOVERY (2002)
 HV9190
 HV9190'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 HV9190'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9191 ***********************************************************************
 HV9191  DESIGNATION -  GPS 214
 HV9191  PID         -  HV9191
 HV9191  STATE/COUNTY-  MD/MONTGOMERY
 HV9191  COUNTRY     -  US
 HV9191  USGS QUAD   -  WASHINGTON WEST (2016)
 HV9191
 HV9191                         *CURRENT SURVEY CONTROL
 HV9191  ______________________________________________________________________
 HV9191* NAD 83(2011) POSITION- 38 56 21.84501(N) 077 07 14.13355(W)   ADJUSTED
 HV9191* NAD 83(2011) ELLIP HT-   -10.392 (meters)        (06/27/12)   ADJUSTED
 HV9191* NAD 83(2011) EPOCH   -  2010.00
 HV9191* NAVD 88 ORTHO HEIGHT -    21.536 (meters)       70.66  (feet) ADJUSTED
 HV9191  ______________________________________________________________________
 HV9191  GEOID HEIGHT    -        -31.903 (meters)                     GEOID18
 HV9191  NAD 83(2011) X  -  1,107,265.751 (meters)                     COMP
 HV9191  NAD 83(2011) Y  - -4,842,573.389 (meters)                     COMP
 HV9191  NAD 83(2011) Z  -  3,987,080.122 (meters)                     COMP
 HV9191  LAPLACE CORR    -         -2.14  (seconds)                    DEFLEC18
 HV9191  DYNAMIC HEIGHT  -         21.524 (meters)       70.62  (feet) COMP
 HV9191  MODELED GRAVITY -    980,095.6   (mgal)                       NAVD 88
 HV9191
 HV9191  VERT ORDER      -  THIRD
 HV9191
 HV9191  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9191  Standards:
 HV9191         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9191            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9191  -------------------------------------------------------------------
 HV9191  NETWORK    1.32   2.47           0.55   0.53   1.26      0.15596302
 HV9191  -------------------------------------------------------------------
 HV9191  Click here for local accuracies and other accuracy information.
 HV9191
 HV9191.The horizontal coordinates were established by GPS observations
 HV9191.and adjusted by the National Geodetic Survey in June 2012.
 HV9191
 HV9191.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9191.been affixed to the stable North American tectonic plate. See 
 HV9191.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9191
 HV9191.The horizontal coordinates are valid at the epoch date displayed above
 HV9191.which is a decimal equivalence of Year/Month/Day.
 HV9191
 HV9191.The orthometric height was determined by differential leveling and
 HV9191.adjusted by the NATIONAL GEODETIC SURVEY
 HV9191.in September 2004.
 HV9191
 HV9191.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9191.GEOID18 height accuracy estimate available here.
 HV9191
 HV9191.Click photographs - Photos may exist for this station.
 HV9191
 HV9191.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9191
 HV9191.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9191
 HV9191.The ellipsoidal height was determined by GPS observations
 HV9191.and is referenced to NAD 83.
 HV9191
 HV9191.The dynamic height is computed by dividing the NAVD 88
 HV9191.geopotential number by the normal gravity value computed on the
 HV9191.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9191.degrees latitude (g = 980.6199 gals.).
 HV9191
 HV9191.The modeled gravity was interpolated from observed gravity values.
 HV9191
 HV9191. The following values were computed from the NAD 83(2011) position.
 HV9191
 HV9191;                    North         East     Units Scale Factor Converg.
 HV9191;SPC MD       -   141,286.093   389,545.108   MT  0.99995046   -0 04 32.5
 HV9191;SPC MD       -   463,536.12  1,278,032.58   sFT  0.99995046   -0 04 32.5
 HV9191;SPC VA N     - 2,142,172.549 3,619,586.168   MT  0.99996413   +0 51 39.3
 HV9191;SPC VA N     - 7,028,111.10 11,875,258.95   sFT  0.99996413   +0 51 39.3
 HV9191;UTM  18      - 4,312,190.104   316,208.729   MT  1.00001596   -1 19 59.4
 HV9191
 HV9191!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9191!SPC MD       -   1.00000163  x   0.99995046  =   0.99995209
 HV9191!SPC VA N     -   1.00000163  x   0.99996413  =   0.99996576
 HV9191!UTM  18      -   1.00000163  x   1.00001596  =   1.00001759
 HV9191
 HV9191:                Primary Azimuth Mark                     Grid Az
 HV9191:SPC MD       -  GPS 213                                  003 26 20.2
 HV9191:SPC VA N     -  GPS 213                                  002 30 08.4
 HV9191:UTM  18      -  GPS 213                                  004 41 47.1
 HV9191
 HV9191_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1620812190(NAD 83)
 HV9191
 HV9191|---------------------------------------------------------------------|
 HV9191| PID    Reference Object                     Distance      Geod. Az  |
 HV9191|                                                           dddmmss.s |
 HV9191| HV9190 GPS 213                             APPROX. 1.1 KM 0032147.7 |
 HV9191|---------------------------------------------------------------------|
 HV9191
 HV9191                          SUPERSEDED SURVEY CONTROL
 HV9191
 HV9191  NAD 83(2007)-  38 56 21.84185(N)    077 07 14.13840(W) AD(2002.00) 0
 HV9191  ELLIP H (02/10/07)  -10.301  (m)                       GP(2002.00)    
 HV9191  ELLIP H (08/30/02)  -10.233  (m)                       GP(       ) 4 2
 HV9191  NAD 83(1993)-  38 56 21.84194(N)    077 07 14.13856(W) AD(       ) 2
 HV9191  ELLIP H (11/14/94)  -10.265  (m)                       GP(       ) 4 2
 HV9191  NAD 83(1991)-  38 56 21.84083(N)    077 07 14.14080(W) AD(       ) 2
 HV9191  NGVD 29 (09/10/92)   21.8    (m)  GEOID90  model used  GPS OBS        
 HV9191
 HV9191.Superseded values are not recommended for survey control.
 HV9191
 HV9191.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9191.See file dsdata.pdf to determine how the superseded data were derived.
 HV9191
 HV9191_MARKER: H = DRILL HOLE
 HV9191_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV9191_SP_SET: WALKWAY
 HV9191_MARK LOGO: NONE
 HV9191_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV9191_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV9191_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9191+SATELLITE: SATELLITE OBSERVATIONS - January 16, 2010
 HV9191
 HV9191  HISTORY     - Date     Condition        Report By
 HV9191  HISTORY     - 1991     MONUMENTED       MSI
 HV9191  HISTORY     - 19920129 GOOD             MSI
 HV9191  HISTORY     - 20100116 GOOD             NGS
 HV9191
 HV9191                          STATION DESCRIPTION
 HV9191
 HV9191'DESCRIBED BY MEASUREMENT SCIENCE INCORPORATED 1991
 HV9191'THE STATION IS LOCATED IN MONTGOMERY COUNTY, MARYLAND APPROXIMATELY
 HV9191'2.0 MI (3.2 KM) SOUTHEAST OF THE TOWN OF GLEN ECHO.  TO REACH THE
 HV9191'STATION FROM THE INTERSECTION OF MACARTHUR BOULEVARD AND GOLDSBORO
 HV9191'ROAD (S.R. 614), PROCEED SOUTHEAST ALONG MACARTHUR BOULEVARD FOR 1.85
 HV9191'MI (2.98 KM) TO THE INTERSECTION WITH MARYLAND AVENUE.  TURN RIGTH
 HV9191'ONTO MARYLAND AVENUE AND TRAVEL 0.15 MI (0.24 KM) SOUTHWEST TO THE
 HV9191'INTERSECTION WITH RIDGE DRIVE.  BEAR LEFT AND PROCEED SOUTHEAST ALONG
 HV9191'RIDGE DRIVE FOR 0.25 MI (0.40 KM) TO THE FOOTPATH TO THE C AND O
 HV9191'CANAL AND LOCK 5 ON THE RIGHT OPPOSITE RESIDENCE NUMBER 6039.  TRAVEL
 HV9191'SOUTHWESTERLY ALONG THE GRAVEL FOOTPATH TO THE PIGTAIL BRIDGE AND
 HV9191'THE STATION.
 HV9191'THE STATION IS A DRILL HOLE MARKED BY A CHISELED TRIANGLE IN THE
 HV9191'CONCRETE WALKWAY IN THE CENTER OF THE PIGTAIL PEDESTRIAN BRIDGE
 HV9191'OVER CLARA BARTON PARKWAY.  THE STATION IS LOCATED OVER THE GRASS
 HV9191'MEDIAN BETWEEN THE EAST AND WESTBOUND LANES OF CLARA BARTON PARKWAY,
 HV9191'86.0 FT (26.2 M) SOUTHWEST OF AN EXPANSION JOINT IN THE WALKWAY
 HV9191'BETWEEN THE ASPHALT AND CONCRETE AT THE NORTHEASTERN ABUTMENT OF THE
 HV9191'BRIDGE, 45.5 FT (13.9 M) NORTHEAST OF AN EXPANSION JOINT IN THE
 HV9191'WALKWAY AT THE SOUTHWESTERN END OF THE BRIDGE, 5.1 FT (1.6 M)
 HV9191'SOUTHEAST OF THE METAL RAILING ON THE NORTHWESTERN SIDE OF THE BRIDGE,
 HV9191'AND 4.8 FT (1.5 M) NORTHWEST OF THE METAL RAILING ON THE SOUTHEASTERN
 HV9191'SIDE OF THE BRIDGE.
 HV9191
 HV9191                          STATION RECOVERY (1992)
 HV9191
 HV9191'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1992
 HV9191'RECOVERED IN GOOD CONDITION.
 HV9191
 HV9191                          STATION RECOVERY (2010)
 HV9191
 HV9191'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 HV9191'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AE4036 ***********************************************************************
 AE4036  DESIGNATION -  GPS 29
 AE4036  PID         -  AE4036
 AE4036  STATE/COUNTY-  MD/BALTIMORE
 AE4036  COUNTRY     -  US
 AE4036  USGS QUAD   -  SPARROWS POINT (2016)
 AE4036
 AE4036                         *CURRENT SURVEY CONTROL
 AE4036  ______________________________________________________________________
 AE4036* NAD 83(1986) POSITION- 39 13 21.     (N) 076 27 47.     (W)   SCALED
 AE4036* NAVD 88 ORTHO HEIGHT -     2.652 (meters)        8.70  (feet) ADJUSTED
 AE4036  ______________________________________________________________________
 AE4036  GEOID HEIGHT    -        -33.025 (meters)                     GEOID18
 AE4036  DYNAMIC HEIGHT  -          2.650 (meters)        8.69  (feet) COMP
 AE4036  MODELED GRAVITY -    980,104.5   (mgal)                       NAVD 88
 AE4036
 AE4036  VERT ORDER      -  THIRD
 AE4036
 AE4036.The horizontal coordinates were scaled from a map and have
 AE4036.an estimated accuracy of +/- 6 seconds.
 AE4036
 AE4036.The orthometric height was determined by differential leveling and
 AE4036.adjusted by the NATIONAL GEODETIC SURVEY
 AE4036.in February 1998.
 AE4036
 AE4036.Significant digits in the geoid height do not necessarily reflect accuracy.
 AE4036.GEOID18 height accuracy estimate available here.
 AE4036
 AE4036.Click photographs - Photos may exist for this station.
 AE4036
 AE4036.The dynamic height is computed by dividing the NAVD 88
 AE4036.geopotential number by the normal gravity value computed on the
 AE4036.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AE4036.degrees latitude (g = 980.6199 gals.).
 AE4036
 AE4036.The modeled gravity was interpolated from observed gravity values.
 AE4036
 AE4036;                    North         East    Units  Estimated Accuracy
 AE4036;SPC MD       -   172,840.      446,370.      MT  (+/- 180 meters Scaled)
 AE4036
 AE4036_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ737424(NAD 83)
 AE4036
 AE4036                          SUPERSEDED SURVEY CONTROL
 AE4036
 AE4036.No superseded survey control is available for this station.
 AE4036
 AE4036_MARKER: DD = SURVEY DISK
 AE4036_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AE4036_STAMPING: JAN 1993 GPS 29
 AE4036_MARK LOGO: MD-005
 AE4036_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AE4036_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AE4036+STABILITY: SURFACE MOTION
 AE4036
 AE4036  HISTORY     - Date     Condition        Report By
 AE4036  HISTORY     - 1993     MONUMENTED       NGS
 AE4036  HISTORY     - 19950223 GOOD             MCCRON
 AE4036
 AE4036                          STATION DESCRIPTION
 AE4036
 AE4036'DESCRIBED BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 AE4036'STATION IS LOCATED ON THE GROUNDS OF BETHLEHEM STEEL IN SPARROWS
 AE4036'POINT. TO REACH STATION FROM I-695 (BELTWAY) TAKE EXIT 42 TO NORTH
 AE4036'POINT BLVD SOUTH (RT 151) .  FROM THE I-695 OVERPASS OVER NORTH POINT
 AE4036'BLVD GO SOUTH FOR 1.1 MI (1.8 KM) TO WHARF ROAD EXIT, FOLLOW WHARF
 AE4036'ROAD SOUTH FOR 1.1 MI (1.8 KM) TO STATION ON THE LEFT. STATION MARK IS
 AE4036'SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH
 AE4036'THE GROUND.  IT IS 23.7 FT (7.2 M) EAST OF THE CENTERLINE OF WHARF
 AE4036'ROAD, 26.6 FT (8.1 M) NORTH OF THE SOUTHERNMOST END OF A ROW OF 4 FOOT
 AE4036'(1.2 M) HIGH STEEL POSTS, 6.0 FT (1.8 M) NORTHEAST OF THIRD STEEL
 AE4036'POST, 5.7 FT (1.7 M) SOUTHEAST OF FOURTH STEEL POST.  NOTE STATION IS
 AE4036'BETWEEN THE THIRD AND FOURTH STEEL POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9247 ***********************************************************************
 DP9247  DESIGNATION -  GPS 3
 DP9247  PID         -  DP9247
 DP9247  STATE/COUNTY-  MD/WORCESTER
 DP9247  COUNTRY     -  US
 DP9247  USGS QUAD   -  OCEAN CITY (2016)
 DP9247
 DP9247                         *CURRENT SURVEY CONTROL
 DP9247  ______________________________________________________________________
 DP9247* NAD 83(1986) POSITION- 38 16 56.     (N) 075 07 05.     (W)   SCALED
 DP9247* NAVD 88 ORTHO HEIGHT -     1.283 (meters)        4.21  (feet) ADJUSTED
 DP9247  ______________________________________________________________________
 DP9247  GEOID HEIGHT    -        -36.113 (meters)                     GEOID18
 DP9247  DYNAMIC HEIGHT  -          1.282 (meters)        4.21  (feet) COMP
 DP9247  MODELED GRAVITY -    980,002.2   (mgal)                       NAVD 88
 DP9247
 DP9247  VERT ORDER      -  SECOND    CLASS II
 DP9247
 DP9247.The horizontal coordinates were scaled from a map and have
 DP9247.an estimated accuracy of +/- 6 seconds.
 DP9247
 DP9247.The orthometric height was determined by differential leveling and
 DP9247.adjusted by the NATIONAL GEODETIC SURVEY
 DP9247.in July 2016.
 DP9247
 DP9247.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9247.GEOID18 height accuracy estimate available here.
 DP9247
 DP9247.Click photographs - Photos may exist for this station.
 DP9247
 DP9247.The dynamic height is computed by dividing the NAVD 88
 DP9247.geopotential number by the normal gravity value computed on the
 DP9247.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9247.degrees latitude (g = 980.6199 gals.).
 DP9247
 DP9247.The modeled gravity was interpolated from observed gravity values.
 DP9247
 DP9247;                    North         East    Units  Estimated Accuracy
 DP9247;SPC MD       -    70,030.      564,650.      MT  (+/- 180 meters Scaled)
 DP9247
 DP9247_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH896371(NAD 83)
 DP9247
 DP9247                          SUPERSEDED SURVEY CONTROL
 DP9247
 DP9247.No superseded survey control is available for this station.
 DP9247
 DP9247_MARKER: DD = SURVEY DISK
 DP9247_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9247_STAMPING: GPS-3 1993
 DP9247_MARK LOGO: NPS
 DP9247_PROJECTION: PROJECTING 11 CENTIMETERS
 DP9247_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9247_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9247_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9247+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9247_ROD/PIPE-DEPTH: 4.9 meters
 DP9247
 DP9247  HISTORY     - Date     Condition        Report By
 DP9247  HISTORY     - 1993     MONUMENTED       NPS
 DP9247  HISTORY     - 20150227 GOOD             NPS
 DP9247
 DP9247                          STATION DESCRIPTION
 DP9247
 DP9247'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9247'THE STATION IS LOCATED ABOUT 7.7 MI (12.4 KM) SOUTH-SOUTHEAST OF OCEAN
 DP9247'PINES, 6.1 MI (9.8 KM) EAST-SOUTHEAST OF BERLIN AND 4.1 MI (6.6 KM)
 DP9247'SOUTH-SOUTHWEST OF OCEAN CITY.
 DP9247'
 DP9247'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY.  CONTINUE ON
 DP9247'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9247'SHELL ROAD.
 DP9247'
 DP9247'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9247'NATIONAL SEASHORE.
 DP9247'
 DP9247'THE STATION IS WEST OF KM 5.0.  THE STATION IS 229.6 M (753.3 FT)
 DP9247'NORTHWEST OF KILOMETER POST 5.25, 20.0 M (65.6 FT) WEST OF KILOMETER
 DP9247'POST 5.0 AND 1.0 M (3.3 FT) SOUTHEAST OF ORANGE CARSONITE WITNESS
 DP9247'POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9249 ***********************************************************************
 DP9249  DESIGNATION -  GPS 4
 DP9249  PID         -  DP9249
 DP9249  STATE/COUNTY-  MD/WORCESTER
 DP9249  COUNTRY     -  US
 DP9249  USGS QUAD   -  BERLIN (2016)
 DP9249
 DP9249                         *CURRENT SURVEY CONTROL
 DP9249  ______________________________________________________________________
 DP9249* NAD 83(1986) POSITION- 38 15 53.     (N) 075 07 31.     (W)   SCALED
 DP9249* NAVD 88 ORTHO HEIGHT -     0.976 (meters)        3.20  (feet) ADJUSTED
 DP9249  ______________________________________________________________________
 DP9249  GEOID HEIGHT    -        -36.133 (meters)                     GEOID18
 DP9249  DYNAMIC HEIGHT  -          0.975 (meters)        3.20  (feet) COMP
 DP9249  MODELED GRAVITY -    980,000.1   (mgal)                       NAVD 88
 DP9249
 DP9249  VERT ORDER      -  SECOND    CLASS II
 DP9249
 DP9249.The horizontal coordinates were scaled from a map and have
 DP9249.an estimated accuracy of +/- 6 seconds.
 DP9249
 DP9249.The orthometric height was determined by differential leveling and
 DP9249.adjusted by the NATIONAL GEODETIC SURVEY
 DP9249.in July 2016.
 DP9249
 DP9249.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9249.GEOID18 height accuracy estimate available here.
 DP9249
 DP9249.Click photographs - Photos may exist for this station.
 DP9249
 DP9249.The dynamic height is computed by dividing the NAVD 88
 DP9249.geopotential number by the normal gravity value computed on the
 DP9249.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9249.degrees latitude (g = 980.6199 gals.).
 DP9249
 DP9249.The modeled gravity was interpolated from observed gravity values.
 DP9249
 DP9249;                    North         East    Units  Estimated Accuracy
 DP9249;SPC MD       -    68,070.      564,060.      MT  (+/- 180 meters Scaled)
 DP9249
 DP9249_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH890351(NAD 83)
 DP9249
 DP9249                          SUPERSEDED SURVEY CONTROL
 DP9249
 DP9249.No superseded survey control is available for this station.
 DP9249
 DP9249_MARKER: DD = SURVEY DISK
 DP9249_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9249_STAMPING: GPS-4 1993
 DP9249_MARK LOGO: NPS
 DP9249_PROJECTION: RECESSED 91 CENTIMETERS
 DP9249_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9249_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9249_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP9249+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9249_ROD/PIPE-DEPTH: 4.9 meters
 DP9249
 DP9249  HISTORY     - Date     Condition        Report By
 DP9249  HISTORY     - 1993     MONUMENTED       NPS
 DP9249  HISTORY     - 20150227 GOOD             NPS
 DP9249
 DP9249                          STATION DESCRIPTION
 DP9249
 DP9249'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9249'THE STATION IS LOCATED ABOUT 8.7 MI (14.0 KM) SOUTH-SOUTHEAST OF OCEAN
 DP9249'PINES, 6.4 MI (10.3 KM) SOUTHEAST OF BERLIN AND 5.4 MI (8.7 KM)
 DP9249'SOUTH-SOUTHWEST OF OCEAN CITY.
 DP9249'
 DP9249'TO REACH FROM THE END OF THE BRIDGE OVER SINEPUXENT BAY.  CONTINUE ON
 DP9249'SR611 FOR APPROXIMATELY 1.1 KM (0.7 MI) AND MAKE FIRST LEFT ONTO GATED
 DP9249'SHELL ROAD.
 DP9249'
 DP9249'NOTE-VEHICLE ACCESS REQUIRES PERMISSION FROM ASSATEAGUE ISLAND
 DP9249'NATIONAL SEASHORE.
 DP9249'
 DP9249'THE STATION IS LOCATED 104 M (341.2 FT) SOUTHEAST OF KILOMETER POST
 DP9249'7.0, 131 M (429.8 FT) NORTHEAST OF THE ORANGE CARSONITE WITNESS POST
 DP9249'FOR -ASIS 004 2010- AND 524 M (1719.2 FT) SOUTHEAST OF THE TIDE
 DP9249'STATION LOCATED IN SINEPUXENT BAY.
 DP9249'
 DP9249'NOTE-ONLY ABOUT 1-2 INCHES (3 CM) OF THE TOP OF THE ORANGE CARSONITE
 DP9249'WITNESS POST FOR GPS4 IS EXPOSED.  THE MARKER IS BURIED UNDER ABOUT 1
 DP9249'M (3.3 FT) OF SAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9260 ***********************************************************************
 DP9260  DESIGNATION -  GPS 6
 DP9260  PID         -  DP9260
 DP9260  STATE/COUNTY-  MD/WORCESTER
 DP9260  COUNTRY     -  US
 DP9260  USGS QUAD   -  TINGLES ISLAND (2016)
 DP9260
 DP9260                         *CURRENT SURVEY CONTROL
 DP9260  ______________________________________________________________________
 DP9260* NAD 83(2011) POSITION- 38 13 52.15757(N) 075 08 29.51281(W)   ADJUSTED
 DP9260* NAD 83(2011) ELLIP HT-   -34.895 (meters)        (06/05/19)   ADJUSTED
 DP9260* NAD 83(2011) EPOCH   -  2010.00
 DP9260* NAVD 88 ORTHO HEIGHT -     1.311 (meters)        4.30  (feet) ADJUSTED
 DP9260  ______________________________________________________________________
 DP9260  GEOID HEIGHT    -        -36.173 (meters)                     GEOID18
 DP9260  NAD 83(2011) X  -  1,286,408.895 (meters)                     COMP
 DP9260  NAD 83(2011) Y  - -4,848,821.766 (meters)                     COMP
 DP9260  NAD 83(2011) Z  -  3,925,609.142 (meters)                     COMP
 DP9260  LAPLACE CORR    -          0.04  (seconds)                    DEFLEC18
 DP9260  DYNAMIC HEIGHT  -          1.310 (meters)        4.30  (feet) COMP
 DP9260  MODELED GRAVITY -    979,995.7   (mgal)                       NAVD 88
 DP9260
 DP9260  VERT ORDER      -  SECOND    CLASS II
 DP9260
 DP9260  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DP9260  Standards:
 DP9260         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DP9260            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DP9260  -------------------------------------------------------------------
 DP9260  NETWORK    1.01   0.86           0.49   0.28   0.44     -0.00632288
 DP9260  -------------------------------------------------------------------
 DP9260  Click here for local accuracies and other accuracy information.
 DP9260
 DP9260.The horizontal coordinates were established by GPS observations
 DP9260.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DP9260
 DP9260.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DP9260.been affixed to the stable North American tectonic plate. See 
 DP9260.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DP9260
 DP9260.The horizontal coordinates are valid at the epoch date displayed above
 DP9260.which is a decimal equivalence of Year/Month/Day.
 DP9260
 DP9260.The orthometric height was determined by differential leveling and
 DP9260.adjusted by the NATIONAL GEODETIC SURVEY
 DP9260.in July 2016.
 DP9260
 DP9260.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9260.GEOID18 height accuracy estimate available here.
 DP9260
 DP9260.Click photographs - Photos may exist for this station.
 DP9260
 DP9260.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DP9260
 DP9260.The Laplace correction was computed from DEFLEC18 derived deflections.
 DP9260
 DP9260.The ellipsoidal height was determined by GPS observations
 DP9260.and is referenced to NAD 83.
 DP9260
 DP9260.The dynamic height is computed by dividing the NAVD 88
 DP9260.geopotential number by the normal gravity value computed on the
 DP9260.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9260.degrees latitude (g = 980.6199 gals.).
 DP9260
 DP9260.The modeled gravity was interpolated from observed gravity values.
 DP9260
 DP9260. The following values were computed from the NAD 83(2011) position.
 DP9260
 DP9260;                    North         East     Units Scale Factor Converg.
 DP9260;SPC MD       -    64,317.203   562,710.996   MT  1.00001269   +1 09 59.2
 DP9260;SPC MD       -   211,014.02  1,846,160.99   sFT  1.00001269   +1 09 59.2
 DP9260;UTM  18      - 4,231,472.108   487,613.029   MT  0.99960189   -0 05 15.3
 DP9260
 DP9260!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DP9260!SPC MD       -   1.00000548  x   1.00001269  =   1.00001817
 DP9260!UTM  18      -   1.00000548  x   0.99960189  =   0.99960736
 DP9260
 DP9260_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8761331472(NAD 83)
 DP9260
 DP9260                          SUPERSEDED SURVEY CONTROL
 DP9260
 DP9260.No superseded survey control is available for this station.
 DP9260
 DP9260_MARKER: DD = SURVEY DISK
 DP9260_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9260_STAMPING: GPS-6 1993
 DP9260_MARK LOGO: NPS
 DP9260_PROJECTION: RECESSED 15 CENTIMETERS
 DP9260_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9260_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9260_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DP9260+SATELLITE: SATELLITE OBSERVATIONS - September 21, 2023
 DP9260_ROD/PIPE-DEPTH: 4.9 meters
 DP9260
 DP9260  HISTORY     - Date     Condition        Report By
 DP9260  HISTORY     - 1993     MONUMENTED       NPS
 DP9260  HISTORY     - 20150227 GOOD             NPS
 DP9260  HISTORY     - 20230921 GOOD             BASE9
 DP9260
 DP9260                          STATION DESCRIPTION
 DP9260
 DP9260'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9260'THE STATION IS LOCATED ABOUT 8.2 MI (13.2 KM) EAST OF NEWARK, 7.9 MI
 DP9260'(12.7 KM) SOUTH-SOUTHWEST OF OCEAN CITY AND 7.6 MI (12.2 KM)
 DP9260'SOUTH-SOUTHEAST OF BERLIN.
 DP9260'
 DP9260'TO REACH FROM THE INTERSECTION OF SR611 AND BAYBERRY DRIVE, TURN RIGHT
 DP9260'ONTO BAYBERRY DRIVE AND DRIVE SOUTH.
 DP9260'
 DP9260'THE STATION IS LOCATED IN ASSATEAGUE STATE PARK.  THE STATION IS
 DP9260'LOCATED 1.75 M (5.7 FT) SOUTHEAST OF A WOODEN SPLIT RAIL FENCE ON THE
 DP9260'EASTERN SIDE OF A BIKE PATH, 6.9 M (22.6 FT) SOUTHWEST OF A METAL
 DP9260'UTILITY BOX ON A RAISED PLATFORM AND 12.8 M (42.0 FT) SOUTHEAST OF THE
 DP9260'BIKE PATH GUARD RAIL FENCE.
 DP9260
 DP9260                          STATION RECOVERY (2023)
 DP9260
 DP9260'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2023 (DRD)
 DP9260'THE MARK IS 0.48 M (1.6 FT) WEST OF A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9262 ***********************************************************************
 DP9262  DESIGNATION -  GPS 7
 DP9262  PID         -  DP9262
 DP9262  STATE/COUNTY-  MD/WORCESTER
 DP9262  COUNTRY     -  US
 DP9262  USGS QUAD   -  TINGLES ISLAND (2016)
 DP9262
 DP9262                         *CURRENT SURVEY CONTROL
 DP9262  ______________________________________________________________________
 DP9262* NAD 83(1986) POSITION- 38 12 52.19   (N) 075 09 01.39   (W)   HD_HELD1
 DP9262* NAVD 88 ORTHO HEIGHT -     1.160 (meters)        3.81  (feet) ADJUSTED
 DP9262  ______________________________________________________________________
 DP9262  GEOID HEIGHT    -        -36.194 (meters)                     GEOID18
 DP9262  DYNAMIC HEIGHT  -          1.160 (meters)        3.81  (feet) COMP
 DP9262  MODELED GRAVITY -    979,993.4   (mgal)                       NAVD 88
 DP9262
 DP9262  VERT ORDER      -  SECOND    CLASS II
 DP9262
 DP9262.The horizontal coordinates were determined by differentially corrected
 DP9262.hand held GPS observations or other comparable positioning techniques
 DP9262.and have an estimated accuracy of +/- 3 meters.
 DP9262
 DP9262.The orthometric height was determined by differential leveling and
 DP9262.adjusted by the NATIONAL GEODETIC SURVEY
 DP9262.in July 2016.
 DP9262
 DP9262.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9262.GEOID18 height accuracy estimate available here.
 DP9262
 DP9262.Click photographs - Photos may exist for this station.
 DP9262
 DP9262.The dynamic height is computed by dividing the NAVD 88
 DP9262.geopotential number by the normal gravity value computed on the
 DP9262.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9262.degrees latitude (g = 980.6199 gals.).
 DP9262
 DP9262.The modeled gravity was interpolated from observed gravity values.
 DP9262
 DP9262;                    North         East    Units  Estimated Accuracy
 DP9262;SPC MD       -    62,452.8     561,973.3     MT  (+/- 3 meters HH1 GPS) 
 DP9262
 DP9262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8683529625(NAD 83)
 DP9262
 DP9262                          SUPERSEDED SURVEY CONTROL
 DP9262
 DP9262.No superseded survey control is available for this station.
 DP9262
 DP9262_MARKER: DD = SURVEY DISK
 DP9262_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9262_STAMPING: GPS-7 1993
 DP9262_MARK LOGO: NPS
 DP9262_PROJECTION: FLUSH
 DP9262_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9262_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9262_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP9262+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2015
 DP9262_ROD/PIPE-DEPTH: 4.9 meters
 DP9262
 DP9262  HISTORY     - Date     Condition        Report By
 DP9262  HISTORY     - 1993     MONUMENTED       NPS
 DP9262  HISTORY     - 20150227 GOOD             NPS
 DP9262
 DP9262                          STATION DESCRIPTION
 DP9262
 DP9262'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9262'THE STATION IS LOCATED ABOUT 9.1 MI (14.6 KM) SOUTH-SOUTHWEST OF OCEAN
 DP9262'CITY, 8.3 MI (13.4 KM) SOUTH-SOUTHEAST OF BERLIN AND 8.0 MI (12.9 KM)
 DP9262'EAST-SOUTHEAST OF NEWARK.
 DP9262'
 DP9262'TO REACH FROM THE INTERSECTION OF SR611 AND BAYBERRY DRIVE.  TURN
 DP9262'RIGHT/DRIVE SOUTH ON BAYBERRY DRIVE.
 DP9262'
 DP9262'THE STATION IS LOCATED NEAR ASSATEAGUE STATE PARK AND ASSATEAGUE
 DP9262'ISLAND NATIONAL SEASHORE BOUNDARY.  THE STATION IS 14 M (45.9 FT)
 DP9262'NORTHEAST OF BLACK AND YELLOW STRIPED HAZARD ROAD SIGN NEXT TO BREAK
 DP9262'IN BIKE PATH FENCE, 13.7 M (44.9 FT) SOUTHEAST OF NORTHERN BREAK IN
 DP9262'BIKE PATH FENCE AND 28 M (91.9 FT) NORTHEAST OF FEE AREA SIGN ON THE
 DP9262'WEST SIDE OF BAYBERRY DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DP9267 ***********************************************************************
 DP9267  DESIGNATION -  GPS 8
 DP9267  PID         -  DP9267
 DP9267  STATE/COUNTY-  MD/WORCESTER
 DP9267  COUNTRY     -  US
 DP9267  USGS QUAD   -  TINGLES ISLAND (2016)
 DP9267
 DP9267                         *CURRENT SURVEY CONTROL
 DP9267  ______________________________________________________________________
 DP9267* NAD 83(1986) POSITION- 38 11 49.11   (N) 075 09 26.65   (W)   HD_HELD1
 DP9267* NAVD 88 ORTHO HEIGHT -     1.369 (meters)        4.49  (feet) ADJUSTED
 DP9267  ______________________________________________________________________
 DP9267  GEOID HEIGHT    -        -36.216 (meters)                     GEOID18
 DP9267  DYNAMIC HEIGHT  -          1.369 (meters)        4.49  (feet) COMP
 DP9267  MODELED GRAVITY -    979,991.4   (mgal)                       NAVD 88
 DP9267
 DP9267  VERT ORDER      -  SECOND    CLASS II
 DP9267
 DP9267.The horizontal coordinates were determined by differentially corrected
 DP9267.hand held GPS observations or other comparable positioning techniques
 DP9267.and have an estimated accuracy of +/- 3 meters.
 DP9267
 DP9267.The orthometric height was determined by differential leveling and
 DP9267.adjusted by the NATIONAL GEODETIC SURVEY
 DP9267.in July 2016.
 DP9267
 DP9267.Significant digits in the geoid height do not necessarily reflect accuracy.
 DP9267.GEOID18 height accuracy estimate available here.
 DP9267
 DP9267.Click photographs - Photos may exist for this station.
 DP9267
 DP9267.The dynamic height is computed by dividing the NAVD 88
 DP9267.geopotential number by the normal gravity value computed on the
 DP9267.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DP9267.degrees latitude (g = 980.6199 gals.).
 DP9267
 DP9267.The modeled gravity was interpolated from observed gravity values.
 DP9267
 DP9267;                    North         East    Units  Estimated Accuracy
 DP9267;SPC MD       -    60,495.8     561,398.2     MT  (+/- 3 meters HH1 GPS) 
 DP9267
 DP9267_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8621727681(NAD 83)
 DP9267
 DP9267                          SUPERSEDED SURVEY CONTROL
 DP9267
 DP9267.No superseded survey control is available for this station.
 DP9267
 DP9267_MARKER: DD = SURVEY DISK
 DP9267_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 DP9267_STAMPING: GPS-8 1993
 DP9267_MARK LOGO: NPS
 DP9267_PROJECTION: RECESSED 15 CENTIMETERS
 DP9267_MAGNETIC: N = NO MAGNETIC MATERIAL
 DP9267_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DP9267_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DP9267+SATELLITE: SATELLITE OBSERVATIONS - February 24, 2015
 DP9267_ROD/PIPE-DEPTH: 4.9 meters
 DP9267
 DP9267  HISTORY     - Date     Condition        Report By
 DP9267  HISTORY     - 1993     MONUMENTED       NPS
 DP9267  HISTORY     - 20150224 GOOD             NPS
 DP9267
 DP9267                          STATION DESCRIPTION
 DP9267
 DP9267'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DP9267'THE STATION IS LOCATED ABOUT 10.4 MI (16.7 KM) SOUTH-SOUTHWEST OF
 DP9267'OCEAN CITY, 9.3 MI (15.0 KM) SOUTH-SOUTHEAST OF BERLIN AND 8.2 MI
 DP9267'(13.2 KM) EAST-SOUTHEAST OF NEWARK.
 DP9267'
 DP9267'TO REACH FROM THE INTERSECTION OF SR611 AND BAYBERRY DRIVE.  TURN
 DP9267'RIGHT/DRIVE SOUTH ON BAYBERRY DRIVE.
 DP9267'
 DP9267'THE STATION IS LOCATED JUST SOUTH OF THE LIFE OF THE FOREST TRAIL
 DP9267'PARKING LOT.  THE STATION IS 60 CM (24 INCHES) NORTHWEST OF THE ORANGE
 DP9267'CARSONITE WITNESS POST FOR GPS 8, 11.6 M (38.1 FT) SOUTHEAST OF THE
 DP9267'EASTERN EDGE OF BAYBERRY DRIVE AND 32.2 M (105.6 FT) SOUTHWEST OF THE
 DP9267'SOUTHERN EDGE OF A SIDE ROAD THAT CONNECTS BAYBERRY DRIVE WITH
 DP9267'OCEANSIDE CAMPGROUND LANE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK4414 ***********************************************************************
 DK4414  HT_MOD      -  This is a Height Modernization Survey Station.
 DK4414  DESIGNATION -  GPS HMOD 29
 DK4414  PID         -  DK4414
 DK4414  STATE/COUNTY-  MD/MONTGOMERY
 DK4414  COUNTRY     -  US
 DK4414  USGS QUAD   -  FALLS CHURCH (2019)
 DK4414
 DK4414                         *CURRENT SURVEY CONTROL
 DK4414  ______________________________________________________________________
 DK4414* NAD 83(2011) POSITION- 38 59 48.45657(N) 077 13 49.40604(W)   ADJUSTED
 DK4414* NAD 83(2011) ELLIP HT-    82.353 (meters)        (06/27/12)   ADJUSTED
 DK4414* NAD 83(2011) EPOCH   -  2010.00
 DK4414* NAVD 88 ORTHO HEIGHT -   114.07  (meters)      374.2   (feet) GPS OBS
 DK4414  ______________________________________________________________________
 DK4414  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DK4414  GEOID HEIGHT    -        -31.687 (meters)                     GEOID03
 DK4414  GEOID HEIGHT    -        -31.724 (meters)                     GEOID18
 DK4414  NAD 83(2011) X  -  1,097,114.018 (meters)                     COMP
 DK4414  NAD 83(2011) Y  - -4,840,848.915 (meters)                     COMP
 DK4414  NAD 83(2011) Z  -  3,992,092.197 (meters)                     COMP
 DK4414  LAPLACE CORR    -         -0.50  (seconds)                    DEFLEC18
 DK4414
 DK4414  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DK4414  Standards:
 DK4414         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DK4414            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DK4414  -------------------------------------------------------------------
 DK4414  NETWORK    1.25   2.27           0.52   0.50   1.16     -0.05088092
 DK4414  -------------------------------------------------------------------
 DK4414  Click here for local accuracies and other accuracy information.
 DK4414
 DK4414.The horizontal coordinates were established by GPS observations
 DK4414.and adjusted by the National Geodetic Survey in June 2012.
 DK4414
 DK4414.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DK4414.been affixed to the stable North American tectonic plate. See 
 DK4414.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DK4414
 DK4414.The horizontal coordinates are valid at the epoch date displayed above
 DK4414.which is a decimal equivalence of Year/Month/Day.
 DK4414
 DK4414.The orthometric height was determined by GPS observations and a
 DK4414.high-resolution geoid model using precise GPS observation and
 DK4414.processing techniques.
 DK4414
 DK4414.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK4414.GEOID18 height accuracy estimate available here.
 DK4414
 DK4414.Click photographs - Photos may exist for this station.
 DK4414
 DK4414.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DK4414
 DK4414.The Laplace correction was computed from DEFLEC18 derived deflections.
 DK4414
 DK4414.The ellipsoidal height was determined by GPS observations
 DK4414.and is referenced to NAD 83.
 DK4414
 DK4414. The following values were computed from the NAD 83(2011) position.
 DK4414
 DK4414;                    North         East     Units Scale Factor Converg.
 DK4414;SPC MD       -   147,675.438   380,042.171   MT  0.99995207   -0 08 40.6
 DK4414;SPC MD       -   484,498.50  1,246,855.02   sFT  0.99995207   -0 08 40.6
 DK4414;SPC VA N     - 2,148,405.772 3,609,979.885   MT  0.99997025   +0 47 32.6
 DK4414;SPC VA N     - 7,048,561.27 11,843,742.34   sFT  0.99997025   +0 47 32.6
 DK4414;UTM  18      - 4,318,787.176   306,847.595   MT  1.00005941   -1 24 14.3
 DK4414
 DK4414!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DK4414!SPC MD       -   0.99998708  x   0.99995207  =   0.99993915
 DK4414!SPC VA N     -   0.99998708  x   0.99997025  =   0.99995733
 DK4414!UTM  18      -   0.99998708  x   1.00005941  =   1.00004649
 DK4414
 DK4414_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0684718787(NAD 83)
 DK4414
 DK4414                          SUPERSEDED SURVEY CONTROL
 DK4414
 DK4414  NAD 83(2007)-  38 59 48.45694(N)    077 13 49.40679(W) AD(2002.00) 1
 DK4414  ELLIP H (02/20/09)   82.379  (m)                       GP(2002.00) 4 2
 DK4414  NAD 83(1993)-  38 59 48.45700(N)    077 13 49.40674(W) AD(       ) 1
 DK4414  ELLIP H (01/15/08)   82.388  (m)                       GP(       ) 4 2
 DK4414
 DK4414.Superseded values are not recommended for survey control.
 DK4414
 DK4414.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DK4414.See file dsdata.pdf to determine how the superseded data were derived.
 DK4414
 DK4414_MARKER: DD = SURVEY DISK
 DK4414_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DK4414_STAMPING: GPS HMOD 29
 DK4414_MARK LOGO: VA-059
 DK4414_PROJECTION: FLUSH
 DK4414_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DK4414_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK4414+STABILITY: SURFACE MOTION
 DK4414_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DK4414+SATELLITE: SATELLITE OBSERVATIONS - June , 2005
 DK4414
 DK4414  HISTORY     - Date     Condition        Report By
 DK4414  HISTORY     - 200506   MONUMENTED       GWS
 DK4414
 DK4414                          STATION DESCRIPTION
 DK4414
 DK4414'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2005
 DK4414'THE STATION LIES IN SOUTHWESTERN MONTGOMERY COUNTY, APPROXIMATELY 8
 DK4414'MILES (12.9 KM) NORTHWEST OF WASHINGTON, D.C.  AND 5.5 MILES (8.8 KM)
 DK4414'SOUTHWEST OF ROCKVILLE, IN THE ROAD RIGHT-OF-WAY OF MARYLAND ROUTE 189
 DK4414'(FALLS ROAD) AND JUST NORTH OF THE CHESAPEAKE AND OHIO CANAL NATIONAL
 DK4414'HISTORICAL PARK.   TO REACH THE STATION FROM EXIT 39 OF THE INTERSTATE
 DK4414'495 HIGHWAY (CAPITOL BELTWAY) OVERPASS OF ROUTE 190 (RIVER ROAD),
 DK4414'PROCEED NORTHWESTERLY ALONG ROUTE 190 FOR 3.35 MILES (5.39 KM) TO THE
 DK4414'INTERSECTION WITH ROUTE 189 (FALLS ROAD).  TURN LEFT AND PROCEED
 DK4414'SOUTHWESTERLY ALONG ROUTE 189 FOR 1.95 MILES (3.14 KM) TO THE STATION
 DK4414'ON THE LEFT IN FRONT OF HOUSE  8603, IN A GRASS AREA BETWEEN A 6 FT
 DK4414'(1.8 M) WIDE MACADAM WALK AND THE ROADWAY.  THE STATION MARK IS A
 DK4414'CENTER PUNCH IN THE CENTER OF A STANDARD FAIRFAX COUNTY SURVEY DISK
 DK4414'SET IN THE CENTER OF A 12 INCH (30 CM) DIAMETER CONCRETE MONUMENT
 DK4414'FLUSH TO THE GROUND.  THE STATION IS 8.7 FEET (2.65 M) NORTHWEST OF
 DK4414'THE NORTHWEST EDGE OF THE 6 FT (1.8 M) WIDE MACADAM WALK, 25.8 FEET
 DK4414'(7.86 M) SOUTHEAST OF THE CENTER LINE OF ROUTE 189, 61.9 FEET (18 87
 DK4414'M) NORTHEAST FROM THE CENTER LINE OF A SANITARY MANHOLE COVER IN THE
 DK4414'ROADWAY, AND 45.0 FEET (13.72 M) EAST FROM THE FACE OF POWER POLE
 DK4414'7344233774.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7173 ***********************************************************************
 JV7173  DESIGNATION -  GPS JPL 4005
 JV7173  PID         -  JV7173
 JV7173  STATE/COUNTY-  MD/PRINCE GEORGES
 JV7173  COUNTRY     -  US
 JV7173  USGS QUAD   -  LAUREL (2016)
 JV7173
 JV7173                         *CURRENT SURVEY CONTROL
 JV7173  ______________________________________________________________________
 JV7173* NAD 83(2011) POSITION- 39 01 17.99266(N) 076 49 37.50284(W)   ADJUSTED
 JV7173* NAD 83(2011) ELLIP HT-    15.541 (meters)        (06/27/12)   ADJUSTED
 JV7173* NAD 83(2011) EPOCH   -  2010.00
 JV7173* NAVD 88 ORTHO HEIGHT -    47.897 (meters)      157.14  (feet) ADJUSTED
 JV7173  ______________________________________________________________________
 JV7173  GEOID HEIGHT    -        -32.379 (meters)                     GEOID18
 JV7173  NAD 83(2011) X  -  1,130,753.518 (meters)                     COMP
 JV7173  NAD 83(2011) Y  - -4,831,263.654 (meters)                     COMP
 JV7173  NAD 83(2011) Z  -  3,994,195.646 (meters)                     COMP
 JV7173  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 JV7173  DYNAMIC HEIGHT  -         47.871 (meters)      157.06  (feet) COMP
 JV7173  MODELED GRAVITY -    980,090.6   (mgal)                       NAVD 88
 JV7173
 JV7173  VERT ORDER      -  SECOND    CLASS II
 JV7173
 JV7173  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7173  Standards:
 JV7173         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7173            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7173  -------------------------------------------------------------------
 JV7173  NETWORK    2.74   3.49           0.36   1.38   1.78      0.38731582
 JV7173  -------------------------------------------------------------------
 JV7173  Click here for local accuracies and other accuracy information.
 JV7173
 JV7173.The horizontal coordinates were established by GPS observations
 JV7173.and adjusted by the National Geodetic Survey in June 2012.
 JV7173
 JV7173.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7173.been affixed to the stable North American tectonic plate. See 
 JV7173.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7173
 JV7173.The horizontal coordinates are valid at the epoch date displayed above
 JV7173.which is a decimal equivalence of Year/Month/Day.
 JV7173
 JV7173.The orthometric height was determined by differential leveling and
 JV7173.adjusted by the NATIONAL GEODETIC SURVEY
 JV7173.in April 1999.
 JV7173
 JV7173.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7173.GEOID18 height accuracy estimate available here.
 JV7173
 JV7173.Click photographs - Photos may exist for this station.
 JV7173
 JV7173.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7173
 JV7173.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7173
 JV7173.The ellipsoidal height was determined by GPS observations
 JV7173.and is referenced to NAD 83.
 JV7173
 JV7173.The dynamic height is computed by dividing the NAVD 88
 JV7173.geopotential number by the normal gravity value computed on the
 JV7173.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7173.degrees latitude (g = 980.6199 gals.).
 JV7173
 JV7173.The modeled gravity was interpolated from observed gravity values.
 JV7173
 JV7173. The following values were computed from the NAD 83(2011) position.
 JV7173
 JV7173;                    North         East     Units Scale Factor Converg.
 JV7173;SPC MD       -   150,425.389   414,973.800   MT  0.99995308   +0 06 30.7
 JV7173;SPC MD       -   493,520.63  1,361,459.88   sFT  0.99995308   +0 06 30.7
 JV7173;UTM  18      - 4,320,768.844   341,832.225   MT  0.99990805   -1 09 02.1
 JV7173
 JV7173!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7173!SPC MD       -   0.99999756  x   0.99995308  =   0.99995064
 JV7173!UTM  18      -   0.99999756  x   0.99990805  =   0.99990561
 JV7173
 JV7173_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4183220768(NAD 83)
 JV7173
 JV7173|---------------------------------------------------------------------|
 JV7173| PID    Reference Object                     Distance      Geod. Az  |
 JV7173|                                                           dddmmss.s |
 JV7173| JV7164 20428                                42.076 METERS 19156     |
 JV7173|---------------------------------------------------------------------|
 JV7173
 JV7173                          SUPERSEDED SURVEY CONTROL
 JV7173
 JV7173  NAD 83(2007)-  39 01 17.99292(N)    076 49 37.50409(W) AD(2002.00) 0
 JV7173  ELLIP H (02/10/07)   15.558  (m)                       GP(2002.00)    
 JV7173  ELLIP H (08/09/02)   15.585  (m)                       GP(       ) 3 2
 JV7173  NAD 83(1991)-  39 01 17.99305(N)    076 49 37.50399(W) AD(       ) A
 JV7173  ELLIP H (07/24/97)   15.567  (m)                       GP(       ) 2 1
 JV7173  ELLIP H (09/09/94)   15.491  (m)                       GP(       ) 4 1
 JV7173  NAD 83(1991)-  39 01 17.99293(N)    076 49 37.50413(W) AD(       ) 1
 JV7173  NAVD 88 (01/27/94)   47.9    (m)  GEOID93  model used  GPS OBS        
 JV7173
 JV7173.Superseded values are not recommended for survey control.
 JV7173
 JV7173.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7173.See file dsdata.pdf to determine how the superseded data were derived.
 JV7173
 JV7173_MARKER: Z = SEE DESCRIPTION
 JV7173_SETTING: 0 = UNSPECIFIED SETTING
 JV7173_SP_SET: CONCRETE POST
 JV7173_STAMPING: GODDARD GORF WEST FLINN GPS STATION MARK JPL 4005
 JV7173_MARK LOGO: NONE
 JV7173_PROJECTION: FLUSH
 JV7173_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7173_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7173+STABILITY: SURFACE MOTION
 JV7173_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7173+SATELLITE: SATELLITE OBSERVATIONS - April 16, 1993
 JV7173
 JV7173  HISTORY     - Date     Condition        Report By
 JV7173  HISTORY     - 1992     MONUMENTED       NGS
 JV7173  HISTORY     - 19930416 GOOD
 JV7173  HISTORY     - 19980818 GOOD             NGS
 JV7173
 JV7173                          STATION DESCRIPTION
 JV7173
 JV7173'DESCRIBED BY NATIONAL GEODETIC SURVEY 1992
 JV7173'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MARYLAND, AT THE
 JV7173'GODDARD SPACE FLIGHT CENTER IN GREENBELT, AT THE OPTICAL TEST SITE.
 JV7173'OWNERSHIP---NATIONAL AERONAUTICS AND SPACE ADMINISTRATION.
 JV7173'TO REACH THE STATION FROM THE MAIN ENTRANCE TO THE GODDARD SPACE
 JV7173'FLIGHT CENTER ON GREENBELT ROAD IN GREENBELT, PROCEED EAST ON
 JV7173'GREENBELT ROAD FOR 1.0 KM (0.60 MI) TO THE SOIL CONSERVATION SERVICE
 JV7173'ROAD ON THE RIGHT.  TURN LEFT AND PROCEED NORTH ON A PAVED ROAD FOR
 JV7173'2.7 KM (1.65 MI) TO A CROSS ROAD (BEAVER DAM ROAD).  TURN RIGHT AND
 JV7173'PROCEED EAST ON BEAVER DAM ROAD FOR 2.7 KM (1.65 MI) TO A T-JUNCTION.
 JV7173'TURN LEFT AND PROCEED NORTHWEST ON SPRINGDALE ROAD FOR 1.0 KM
 JV7173'(0.60 MI) TO A ROAD ON THE RIGHT AT THE GATE ENTRANCE TO THE OPTICAL
 JV7173'TEST SITE.  TURN RIGHT, AND PROCEED NORTHEASTERLY THROUGH A GATE ON A
 JV7173'PAVED ROAD, UPHILL FOR 0.2 KM (0.10 MI) TO THE STATION, NORTH-WEST OF
 JV7173'BDLG 216.
 JV7173'THE STATION MARK IS A NASA DISK SET INTO A DRILL HOLE IN THE TOP OF A
 JV7173'CONCRETE MONUMENT.  THE DISK IS LOCATED 87.2 M (286.1 FT) AT A
 JV7173'BEARING OF 23.5 DEGREES FROM STATION NORTH GEOS PIER, WHICH IS SET IN
 JV7173'TRIANGULAR CONCRETE MONUMENT PROJECTING 0.75 M (2.46 FT) ABOVE
 JV7173'GROUND.
 JV7173
 JV7173                          STATION RECOVERY (1993)
 JV7173
 JV7173'RECOVERED 1993
 JV7173'RECOVERED IN GOOD CONDITION.
 JV7173
 JV7173                          STATION RECOVERY (1998)
 JV7173
 JV7173'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (RLA)
 JV7173'3.9 MILES (6.3 KM) EASTERLY ALONG POWDER MILL ROAD FROM THE JUNCTION
 JV7173'OF U.S. HIGHWAY 1 IN BELTSVILLE, THENCE 1.9 KM (1.2 MI) SOUTHEASTERLY
 JV7173'ALONG SPRINGFIELD ROAD, THENCE 0.32 KM (0.20 MI) NORTHERLY ALONG THE
 JV7173'GODDARD OPTICAL RESEARCH FACILITY ENTRANCE ROAD TO A T JUNCTION, AND
 JV7173'THE MARK ON THE LEFT,  A 0.457 METER DIAMETER STAINLESS STEEL PLATE
 JV7173'SET FLUSH IN THE CENTER OF A 0.760 METER DIAMETER CONCRETE MONOLITH
 JV7173'THAT PROJECTS 0.10 METER ABOVE THE GROUND, 10.67 METERS (35.0 FT)
 JV7173'NORTH OF THE CENTERLINE OF THE PAVED ACCESS ROAD, 13.82 METERS (45.3
 JV7173'FT) WEST OF THE NORTHWEST CORNER OF A 1.525 METER SQUARE ELECTRICAL
 JV7173'JUNCTION BOX, AND 44.03 METERS (144.5 FT) SOUTH OF BM GGAO VLBI RM
 JV7173'PIER C. NOTE--THE PLATE IS EVEN ALL OVER, A ROD WAS HELD USING A 2 CM
 JV7173'PLUG ON THE PLATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6451 ***********************************************************************
 JV6451  DESIGNATION -  GPS LR 10
 JV6451  PID         -  JV6451
 JV6451  STATE/COUNTY-  MD/C OF BALTIMORE
 JV6451  COUNTRY     -  US
 JV6451  USGS QUAD   -  BALTIMORE WEST (2016)
 JV6451
 JV6451                         *CURRENT SURVEY CONTROL
 JV6451  ______________________________________________________________________
 JV6451* NAD 83(2011) POSITION- 39 15 32.05736(N) 076 38 01.55984(W)   ADJUSTED
 JV6451* NAD 83(2011) ELLIP HT-   -23.026 (meters)        (06/27/12)   ADJUSTED
 JV6451* NAD 83(2011) EPOCH   -  2010.00
 JV6451* NAVD 88 ORTHO HEIGHT -     9.6   (meters)       31.    (feet) VERTCON3
 JV6451  ______________________________________________________________________
 JV6451  GEOID HEIGHT    -        -32.716 (meters)                     GEOID18
 JV6451  NAD 83(2011) X  -  1,143,197.656 (meters)                     COMP
 JV6451  NAD 83(2011) Y  - -4,811,217.136 (meters)                     COMP
 JV6451  NAD 83(2011) Z  -  4,014,599.077 (meters)                     COMP
 JV6451  LAPLACE CORR    -         -5.82  (seconds)                    DEFLEC18
 JV6451
 JV6451  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6451  Standards:
 JV6451         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6451            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6451  -------------------------------------------------------------------
 JV6451  NETWORK    9.82   7.00           3.95   3.58   3.57      0.65992762
 JV6451  -------------------------------------------------------------------
 JV6451  Click here for local accuracies and other accuracy information.
 JV6451
 JV6451.The horizontal coordinates were established by GPS observations
 JV6451.and adjusted by the National Geodetic Survey in June 2012.
 JV6451
 JV6451.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6451.been affixed to the stable North American tectonic plate. See 
 JV6451.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6451
 JV6451.The horizontal coordinates are valid at the epoch date displayed above
 JV6451.which is a decimal equivalence of Year/Month/Day.
 JV6451
 JV6451.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6451.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6451
 JV6451.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6451.GEOID18 height accuracy estimate available here.
 JV6451
 JV6451.Click photographs - Photos may exist for this station.
 JV6451
 JV6451.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6451
 JV6451.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6451
 JV6451.The ellipsoidal height was determined by GPS observations
 JV6451.and is referenced to NAD 83.
 JV6451
 JV6451. The following values were computed from the NAD 83(2011) position.
 JV6451
 JV6451;                    North         East     Units Scale Factor Converg.
 JV6451;SPC MD       -   176,811.559   431,608.571   MT  0.99997215   +0 13 47.5
 JV6451;SPC MD       -   580,089.26  1,416,035.79   sFT  0.99997215   +0 13 47.5
 JV6451;UTM  18      - 4,346,780.134   359,042.457   MT  0.99984464   -1 02 02.6
 JV6451
 JV6451!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6451!SPC MD       -   1.00000361  x   0.99997215  =   0.99997576
 JV6451!UTM  18      -   1.00000361  x   0.99984464  =   0.99984825
 JV6451
 JV6451_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5904246780(NAD 83)
 JV6451
 JV6451                          SUPERSEDED SURVEY CONTROL
 JV6451
 JV6451  NAD 83(2007)-  39 15 32.05750(N)    076 38 01.56072(W) AD(2002.00) 0
 JV6451  ELLIP H (02/10/07)  -23.012  (m)                       GP(2002.00)    
 JV6451  ELLIP H (09/18/02)  -22.989  (m)                       GP(       ) 4 2
 JV6451  NAD 83(1991)-  39 15 32.06050(N)    076 38 01.55755(W) AD(       ) 1
 JV6451  NAD 83(1986)-  39 15 32.05623(N)    076 38 01.56748(W) AD(       ) 1
 JV6451  NGVD 29 (11/16/90)    9.9    (m)  RAPSU86  model used  GPS OBS        
 JV6451
 JV6451.Superseded values are not recommended for survey control.
 JV6451
 JV6451.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6451.See file dsdata.pdf to determine how the superseded data were derived.
 JV6451
 JV6451_MARKER: F = FLANGE-ENCASED ROD
 JV6451_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6451_STAMPING: GPS LR-10 1988
 JV6451_MARK LOGO: NGS
 JV6451_PROJECTION: RECESSED 9 CENTIMETERS
 JV6451_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6451_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6451_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6451+SATELLITE: SATELLITE OBSERVATIONS - 1988
 JV6451_ROD/PIPE-DEPTH: 14.3 meters
 JV6451
 JV6451  HISTORY     - Date     Condition        Report By
 JV6451  HISTORY     - 1988     MONUMENTED       AEROS
 JV6451  HISTORY     - 20101020 MARK NOT FOUND   MDSHA
 JV6451
 JV6451                          STATION DESCRIPTION
 JV6451
 JV6451'DESCRIBED BY AERO SERVICE CORPORATION 1988 (TJA)
 JV6451'THE STATION IS LOCATED ABOUT 2.4 KM (1.5 MI) NORTHEAST OF THE TOWN OF
 JV6451'LANSDOWNE, 4.3 KM (2.7 MI) NORTHEAST OF THE INTERSTATE 695 BRIDGE OVER
 JV6451'THE PATAPSCO RIVER IN NORTH LINTHICUM, 3.2 KM (2.0 MI) SOUTHWEST OF
 JV6451'THE INNER HARBOR AREA OF BALTIMORE CITY AND AT THE NORTHWEST CORNER OF
 JV6451'THE CHERRY HILL SECTION OF BALTIMORE CITY.  OWNERSHIP--CITY OF
 JV6451'BALTIMORE, MARYLAND.
 JV6451'
 JV6451'TO REACH THE STATION FROM THE OVERPASS INTERSECTION OF WATERVIEW
 JV6451'AVENUE AND THE BALTIMORE-WASHINGTON PARKWAY (MARYLAND ROUTE 295) IN
 JV6451'THE WESTPORT SECTION OF BALTIMORE GO SOUTHEAST FOR 0.3 KM (0.18 MI) ON
 JV6451'WATERVIEW AVENUE TO THE INTERSECTION OF KLOMAN AVENUE ON THE LEFT, AND
 JV6451'THE STATION ON THE LEFT IN THE NORTHWEST QUADRANT OF THE INTERSECTION.
 JV6451'
 JV6451'THE STATION IS A STANDARD NGS THREE DIMENSIONAL MARK.  THE LOGO FLANGE
 JV6451'WITH ACCESS COVER IS STAMPED ---GPS LR-10 1988---, AND IS RECESSED 2.5
 JV6451'CM BELOW THE GROUND.  THE STATION IS A 9/16 INCH DIAMETER STAINLESS
 JV6451'STEEL ROD DRIVEN TO REFUSAL AT THE DEPTH OF 14.3 METERS (47 FT) AND IS
 JV6451'RECESSED 8.9 CM BELOW THE GROUND.  LOCATED 7.47 METERS (24.50 FT)
 JV6451'SOUTH-SOUTHWEST FROM A CHISELED CROSS ON THE SOUTH RIM OF AN
 JV6451'ELECTRICAL MANHOLE, 5.04 METERS (16.55 FT) SOUTH-SOUTHEAST FROM A
 JV6451'CHISELED CROSS ON THE SOUTHEAST RIM OF A SANITARY MANHOLE, 2.97 METERS
 JV6451'(9.75 FT) NORTHEAST FROM THE CENTER TOP NUT OF A FIRE HYDRANT, 3.56
 JV6451'METERS (11.68 FT) NORTH-NORTHEAST FROM A MARYLAND D.O.T. HARMS 1988
 JV6451'BRASS DISK SURVEY MONUMENT, 7.47 METERS (24.5 FT) WEST-NORTHWEST FROM
 JV6451'THE CENTERLINE OF KLOMAN AVENUE, 0.59 METERS (1.95 FT) SOUTHEAST FROM
 JV6451'A STANDARD ORANGE CARSONITE WITNESS POST.
 JV6451
 JV6451                          STATION RECOVERY (2010)
 JV6451
 JV6451'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (TPB)
 JV6451'MARK NOT FOUND - POSSIBLY DESTROYED DUE TO LIGHT RAIL
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6452 ***********************************************************************
 JV6452  DESIGNATION -  GPS LR 12
 JV6452  PID         -  JV6452
 JV6452  STATE/COUNTY-  MD/C OF BALTIMORE
 JV6452  COUNTRY     -  US
 JV6452  USGS QUAD   -  BALTIMORE EAST (2016)
 JV6452
 JV6452                         *CURRENT SURVEY CONTROL
 JV6452  ______________________________________________________________________
 JV6452* NAD 83(2011) POSITION- 39 16 49.04606(N) 076 36 31.14755(W)   NO CHECK
 JV6452* NAD 83(2011) ELLIP HT-    -7.666 (meters)        (06/27/12)   NO CHECK
 JV6452* NAD 83(2011) EPOCH   -  2010.00
 JV6452* NAVD 88 ORTHO HEIGHT -    24.9   (meters)       82.    (feet) VERTCON3
 JV6452  ______________________________________________________________________
 JV6452  GEOID HEIGHT    -        -32.753 (meters)                     GEOID18
 JV6452  NAD 83(2011) X  -  1,144,961.150 (meters)                     COMP
 JV6452  NAD 83(2011) Y  - -4,809,265.172 (meters)                     COMP
 JV6452  NAD 83(2011) Z  -  4,016,446.890 (meters)                     COMP
 JV6452  LAPLACE CORR    -         -5.34  (seconds)                    DEFLEC18
 JV6452
 JV6452  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6452  Standards:
 JV6452         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6452            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6452  -------------------------------------------------------------------
 JV6452  NETWORK   69.64 156.00          23.56  29.79  79.59      0.60942075
 JV6452  -------------------------------------------------------------------
 JV6452  Click here for local accuracies and other accuracy information.
 JV6452
 JV6452.The horizontal coordinates were established by GPS observations
 JV6452.and adjusted by the National Geodetic Survey in June 2012.
 JV6452
 JV6452.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6452.been affixed to the stable North American tectonic plate. See 
 JV6452.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6452
 JV6452.The horizontal coordinates are valid at the epoch date displayed above
 JV6452.which is a decimal equivalence of Year/Month/Day.
 JV6452
 JV6452.No horizontal observational check was made to the station.
 JV6452
 JV6452.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6452.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6452
 JV6452.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6452.GEOID18 height accuracy estimate available here.
 JV6452
 JV6452.Click photographs - Photos may exist for this station.
 JV6452
 JV6452.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6452
 JV6452.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6452
 JV6452.The ellipsoidal height was determined by GPS observations
 JV6452.and is referenced to NAD 83.
 JV6452
 JV6452. The following values were computed from the NAD 83(2011) position.
 JV6452
 JV6452;                    North         East     Units Scale Factor Converg.
 JV6452;SPC MD       -   179,194.728   433,765.944   MT  0.99997471   +0 14 44.2
 JV6452;SPC MD       -   587,908.04  1,423,113.77   sFT  0.99997471   +0 14 44.2
 JV6452;UTM  18      - 4,349,114.820   361,251.586   MT  0.99983703   -1 01 07.0
 JV6452
 JV6452!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6452!SPC MD       -   1.00000120  x   0.99997471  =   0.99997591
 JV6452!UTM  18      -   1.00000120  x   0.99983703  =   0.99983823
 JV6452
 JV6452_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6125149114(NAD 83)
 JV6452
 JV6452                          SUPERSEDED SURVEY CONTROL
 JV6452
 JV6452  NAD 83(2007)-  39 16 49.04699(N)    076 36 31.14787(W) AD(2002.00) 0
 JV6452  ELLIP H (02/10/07)   -7.642  (m)                       GP(2002.00)    
 JV6452  ELLIP H (09/18/02)   -7.676  (m)                       GP(       ) 4 2
 JV6452  NAD 83(1991)-  39 16 49.04920(N)    076 36 31.14968(W) AD(       ) 1
 JV6452  NAD 83(1986)-  39 16 49.04448(N)    076 36 31.15750(W) AD(       ) 1
 JV6452  NGVD 29 (11/16/90)   25.1    (m)  RAPSU86  model used  GPS OBS        
 JV6452
 JV6452.Superseded values are not recommended for survey control.
 JV6452
 JV6452.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6452.See file dsdata.pdf to determine how the superseded data were derived.
 JV6452
 JV6452_MARKER: F = FLANGE-ENCASED ROD
 JV6452_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6452_STAMPING: GPS LR-12 1988
 JV6452_PROJECTION: RECESSED 9 CENTIMETERS
 JV6452_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6452_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6452_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6452+SATELLITE: SATELLITE OBSERVATIONS - 1988
 JV6452_ROD/PIPE-DEPTH: 8.2 meters
 JV6452
 JV6452  HISTORY     - Date     Condition        Report By
 JV6452  HISTORY     - 1988     MONUMENTED       AEROS
 JV6452
 JV6452                          STATION DESCRIPTION
 JV6452
 JV6452'DESCRIBED BY AERO SERVICE CORPORATION 1988 (TJA)
 JV6452'THE STATION IS LOCATED ABOUT 1.2 KM (0.75 MI) SOUTH-SOUTHEAST OF THE
 JV6452'COURTHOUSE AT FAYETTE STREET AND LIGHT STREET IN DOWNTOWN BALTIMORE,
 JV6452'0.3 KM (0.2 MI) SOUTH-SOUTHEAST OF THE INNER HARBOR NEAR DOWNTOWN
 JV6452'BALTIMORE, 2.4 KM (1.5 MI) NORTH-NORTHEAST OF THE HANOVER STREET
 JV6452'BRIDGE OVER THE MIDDLE BRANCH OF THE PATAPSCO RIVER.  OWNERSHIP--CITY
 JV6452'OF BALTIMORE, MARYLAND.
 JV6452'
 JV6452'TO REACH THE STATION FROM THE INTERSECTION OF HANOVER STREET AND
 JV6452'MONTGOMERY STREET IN DOWNTOWN BALTIMORE GO EAST FOR 0.5 KM (0.3 MI) ON
 JV6452'MONTGOMERY STREET TO BATTERY AVENUE.  TURN RIGHT AND GO SOUTH FOR 0.2
 JV6452'KM (0.1 MI) ON BATTERY AVENUE TO WARREN AVENUE.  TURN LEFT AND GO EAST
 JV6452'FOR 0.1 KM (0.06 MI) ON WARREN AVENUE TO THE ENTRANCE TO THE FEDERAL
 JV6452'HILL PARK ON THE LEFT.  TURN LEFT INTO THE PARK AND GO NORTH FOR 0.2
 JV6452'KM (0.1 MI) ON THE PARK DRIVE TO THE STATION ON THE RIGHT NEAR THE
 JV6452'STEPS UP TO THE SIDEWALK THAT RUNS EAST AND WEST ALONG THE NORTH SIDE
 JV6452'OF FEDERAL HILL.
 JV6452'
 JV6452'THE STATION IS A STANDARD NGS THREE DIMENSIONAL MARK.  THE LOGO FLANGE
 JV6452'WITH ACCESS COVER IS STAMPED ---GPS LR-12 1988---, AND IS RECESSED 1.9
 JV6452'CM BELOW THE GROUND.  THE STATION IS A 9/16 INCH DIAMETER STAINLESS
 JV6452'STEEL ROD DRIVEN TO REFUSAL AT THE DEPTH OF 8.2 METERS (27 FT) AND IS
 JV6452'RECESSED 8.9 CM BELOW THE GROUND.  LOCATED 9.67 METERS (31.74 FT) EAST
 JV6452'FROM THE CENTERLINE OF AN OLD IRON CANNON, 18.04 METERS (59.20 FT)
 JV6452'NORTHEAST FROM THE CENTER OF A TALL METAL FLAGPOLE, 5.60 METERS
 JV6452'(18.36 FT) NORTHEAST FROM THE NORTHEAST CORNER OF THE EAST IRON LEG OF
 JV6452'A WOODEN BENCH, 15.84 METERS (51.98 FT) WEST-NORTHWEST FROM THE
 JV6452'NORTHWEST EDGE OF A 24 INCH DIAMETER SYCAMORE TREE, 0.17 METERS
 JV6452'(0.57 FT) NORTH FROM THE NORTH EDGE OF A CONCRETE WALK ON THE NORTH
 JV6452'SIDE OF FEDERAL HILL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6453 ***********************************************************************
 JV6453  DESIGNATION -  GPS LR 23
 JV6453  PID         -  JV6453
 JV6453  STATE/COUNTY-  MD/BALTIMORE
 JV6453  COUNTRY     -  US
 JV6453  USGS QUAD   -  COCKEYSVILLE (2016)
 JV6453
 JV6453                         *CURRENT SURVEY CONTROL
 JV6453  ______________________________________________________________________
 JV6453* NAD 83(2011) POSITION- 39 26 16.03775(N) 076 38 00.61817(W)   ADJUSTED
 JV6453* NAD 83(2011) ELLIP HT-    94.553 (meters)        (06/27/12)   ADJUSTED
 JV6453* NAD 83(2011) EPOCH   -  2010.00
 JV6453* NAVD 88 ORTHO HEIGHT -   127.0   (meters)      417.    (feet) GPS OBS
 JV6453  ______________________________________________________________________
 JV6453  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6453  GEOID HEIGHT    -        -33.334 (meters)                     GEOID93
 JV6453  GEOID HEIGHT    -        -32.456 (meters)                     GEOID18
 JV6453  NAD 83(2011) X  -  1,140,329.638 (meters)                     COMP
 JV6453  NAD 83(2011) Y  - -4,799,049.492 (meters)                     COMP
 JV6453  NAD 83(2011) Z  -  4,030,031.570 (meters)                     COMP
 JV6453  LAPLACE CORR    -         -4.73  (seconds)                    DEFLEC18
 JV6453
 JV6453  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6453  Standards:
 JV6453         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6453            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6453  -------------------------------------------------------------------
 JV6453  NETWORK    0.45   0.78           0.19   0.18   0.40      0.05956281
 JV6453  -------------------------------------------------------------------
 JV6453  Click here for local accuracies and other accuracy information.
 JV6453
 JV6453.The horizontal coordinates were established by GPS observations
 JV6453.and adjusted by the National Geodetic Survey in June 2012.
 JV6453
 JV6453.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6453.been affixed to the stable North American tectonic plate. See 
 JV6453.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6453
 JV6453.The horizontal coordinates are valid at the epoch date displayed above
 JV6453.which is a decimal equivalence of Year/Month/Day.
 JV6453
 JV6453.The orthometric height was determined by GPS observations and a
 JV6453.high-resolution geoid model.
 JV6453
 JV6453.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6453.GEOID18 height accuracy estimate available here.
 JV6453
 JV6453.Click photographs - Photos may exist for this station.
 JV6453
 JV6453.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6453
 JV6453.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6453
 JV6453.The ellipsoidal height was determined by GPS observations
 JV6453.and is referenced to NAD 83.
 JV6453
 JV6453. The following values were computed from the NAD 83(2011) position.
 JV6453
 JV6453;                    North         East     Units Scale Factor Converg.
 JV6453;SPC MD       -   196,671.198   431,551.417   MT  0.99999789   +0 13 48.1
 JV6453;SPC MD       -   645,245.42  1,415,848.27   sFT  0.99999789   +0 13 48.1
 JV6453;UTM  18      - 4,366,633.404   359,424.006   MT  0.99984331   -1 02 16.2
 JV6453
 JV6453!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6453!SPC MD       -   0.99998517  x   0.99999789  =   0.99998306
 JV6453!UTM  18      -   0.99998517  x   0.99984331  =   0.99982848
 JV6453
 JV6453_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5942466633(NAD 83)
 JV6453
 JV6453                          SUPERSEDED SURVEY CONTROL
 JV6453
 JV6453  NAD 83(2007)-  39 26 16.03792(N)    076 38 00.61888(W) AD(2002.00) 0
 JV6453  ELLIP H (02/10/07)   94.570  (m)                       GP(2002.00)    
 JV6453  ELLIP H (08/30/02)   94.582  (m)                       GP(       ) 4 2
 JV6453  NAD 83(1991)-  39 26 16.03816(N)    076 38 00.61889(W) AD(       ) 1
 JV6453  ELLIP H (04/08/97)   94.552  (m)                       GP(       ) 3 1
 JV6453  NAD 83(1991)-  39 26 16.03873(N)    076 38 00.61979(W) AD(       ) 1
 JV6453  NAD 83(1986)-  39 26 16.03323(N)    076 38 00.62570(W) AD(       ) 1
 JV6453  NGVD 29 (11/16/90)  127.1    (m)  RAPSU86  model used  GPS OBS        
 JV6453
 JV6453.Superseded values are not recommended for survey control.
 JV6453
 JV6453.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6453.See file dsdata.pdf to determine how the superseded data were derived.
 JV6453
 JV6453_MARKER: F = FLANGE-ENCASED ROD
 JV6453_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6453_STAMPING: GPS LR-23 1988
 JV6453_MARK LOGO: MD-005
 JV6453_PROJECTION: RECESSED 7 CENTIMETERS
 JV6453_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6453_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6453_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6453+SATELLITE: SATELLITE OBSERVATIONS - January 09, 2003
 JV6453_ROD/PIPE-DEPTH: 18.3 meters
 JV6453
 JV6453  HISTORY     - Date     Condition        Report By
 JV6453  HISTORY     - 1988     MONUMENTED       AEROS
 JV6453  HISTORY     - 19950220 GOOD             MCCRON
 JV6453  HISTORY     - 19970609 GOOD             DMW
 JV6453  HISTORY     - 19980207 GOOD             DMW
 JV6453  HISTORY     - 20030109 GOOD             INDIV
 JV6453
 JV6453                          STATION DESCRIPTION
 JV6453
 JV6453'DESCRIBED BY AERO SERVICE CORPORATION 1988 (TJA)
 JV6453'THE STATION IS LOCATED ABOUT 0.8 KM (0.5 MI) WEST OF THE TOWN OF
 JV6453'TIMONIUM, 5.6 KM (3.5 MI) SOUTHEAST OF THE TOWN OF COCKEYSVILLE, 4.0
 JV6453'KM (2.5 MI) NORTH OF THE TOWN OF RUXTON.  OWNERSHIP--STATE OF
 JV6453'MARYLAND.
 JV6453'
 JV6453'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE 695
 JV6453'(BALTIMORE BELTWAY) AND INTERSTATE 83 (INTERCHANGE 24 ON INTERSTATE
 JV6453'695), GO NORTH FOR 2.1 KM (1.3 MI) ON INTERSTATE 83 TO TIMONIUM ROAD
 JV6453'(INTERCHANGE 16) AND THE STATION ON THE RIGHT AT THE SOUTHWEST CORNER
 JV6453'OF THE INTERSTATE 83 OVERPASS OVER TIMONIUM ROAD.  THE STATION IS IN
 JV6453'THE GRASS PLOT ON THE EAST SIDE OF INTERSTATE 83 BETWEEN THE EDGE OF
 JV6453'THE SHOULDER AND THE GUARD RAIL.
 JV6453'
 JV6453'THE STATION IS A STANDARD NGS THREE DIMENSIONAL MARK.  THE LOGO FLANGE
 JV6453'WITH ACCESS COVER IS STAMPED ---GPS LR-23 1988---, AND IS RECESSED 7.0
 JV6453'CM BELOW THE GROUND.  THE STATION IS A 9/16 INCH DIAMETER STAINLESS
 JV6453'STEEL ROD DRIVEN TO REFUSAL AT THE DEPTH OF 18.3 METERS (60 FT) AND IS
 JV6453'RECESSED 12.7 CM BELOW THE GROUND.  LOCATED 23.96 METERS (78.60 FT)
 JV6453'SOUTH FROM THE BASE OF THE CONCRETE BRIDGE WALL AT THE SOUTHEAST
 JV6453'CORNER OF THE INTERSECTION, 13.59 METERS (44.59 FT) SOUTH FROM A
 JV6453'MARYLAND D.O.T. HARMS 1988 BRASS DISK SURVEY MONUMENT, 0.72 METERS
 JV6453'(2.35 FT) WEST FROM THE WEST EDGE OF A METAL GUARD RAIL, 18.46 METERS
 JV6453'(60.56 FT) NORTH FROM THE NORTH EDGE OF A METAL LIGHT POLE NUMBERED
 JV6453'068250, 0.98 METERS (3.23 FT) EAST FROM THE EAST EDGE OF THE BLACKTOP
 JV6453'SHOULDER PAVING, 1.09 METERS (3.56 FT) WEST FROM A STANDARD ORANGE
 JV6453'CARSONITE WITNESS POST.
 JV6453
 JV6453                          STATION RECOVERY (1995)
 JV6453
 JV6453'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6453'RECOVERED AS DESCRIBED.
 JV6453
 JV6453                          STATION RECOVERY (1997)
 JV6453
 JV6453'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6453'RECOVERED AS DESCRIBED.
 JV6453
 JV6453                          STATION RECOVERY (1998)
 JV6453
 JV6453'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 JV6453'RECOVERED IN GOOD CONDITION.
 JV6453
 JV6453                          STATION RECOVERY (2003)
 JV6453
 JV6453'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (RDS)
 JV6453'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6454 ***********************************************************************
 JV6454  HT_MOD      -  This is a Height Modernization Survey Station.
 JV6454  DESIGNATION -  GPS LR 28
 JV6454  PID         -  JV6454
 JV6454  STATE/COUNTY-  MD/BALTIMORE
 JV6454  COUNTRY     -  US
 JV6454  USGS QUAD   -  COCKEYSVILLE (2016)
 JV6454
 JV6454                         *CURRENT SURVEY CONTROL
 JV6454  ______________________________________________________________________
 JV6454* NAD 83(2011) POSITION- 39 29 56.66677(N) 076 39 33.29108(W)   ADJUSTED
 JV6454* NAD 83(2011) ELLIP HT-    89.330 (meters)        (06/27/12)   ADJUSTED
 JV6454* NAD 83(2011) EPOCH   -  2010.00
 JV6454* NAVD 88 ORTHO HEIGHT -   121.68  (meters)      399.2   (feet) GPS OBS
 JV6454  ______________________________________________________________________
 JV6454  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV6454  GEOID HEIGHT    -        -32.357 (meters)                     GEOID99
 JV6454  GEOID HEIGHT    -        -32.349 (meters)                     GEOID18
 JV6454  NAD 83(2011) X  -  1,137,174.421 (meters)                     COMP
 JV6454  NAD 83(2011) Y  - -4,795,348.951 (meters)                     COMP
 JV6454  NAD 83(2011) Z  -  4,035,281.017 (meters)                     COMP
 JV6454  LAPLACE CORR    -         -3.72  (seconds)                    DEFLEC18
 JV6454
 JV6454  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6454  Standards:
 JV6454         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6454            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6454  -------------------------------------------------------------------
 JV6454  NETWORK    0.45   0.76           0.20   0.16   0.39      0.00473647
 JV6454  -------------------------------------------------------------------
 JV6454  Click here for local accuracies and other accuracy information.
 JV6454
 JV6454.The horizontal coordinates were established by GPS observations
 JV6454.and adjusted by the National Geodetic Survey in June 2012.
 JV6454
 JV6454.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6454.been affixed to the stable North American tectonic plate. See 
 JV6454.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6454
 JV6454.The horizontal coordinates are valid at the epoch date displayed above
 JV6454.which is a decimal equivalence of Year/Month/Day.
 JV6454
 JV6454.The orthometric height was determined by GPS observations and a
 JV6454.high-resolution geoid model using precise GPS observation and
 JV6454.processing techniques.
 JV6454
 JV6454.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6454.GEOID18 height accuracy estimate available here.
 JV6454
 JV6454.Click photographs - Photos may exist for this station.
 JV6454
 JV6454.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6454
 JV6454.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6454
 JV6454.The ellipsoidal height was determined by GPS observations
 JV6454.and is referenced to NAD 83.
 JV6454
 JV6454. The following values were computed from the NAD 83(2011) position.
 JV6454
 JV6454;                    North         East     Units Scale Factor Converg.
 JV6454;SPC MD       -   203,466.814   429,309.869   MT  1.00000895   +0 12 49.9
 JV6454;SPC MD       -   667,540.71  1,408,494.13   sFT  1.00000895   +0 12 49.9
 JV6454;UTM  18      - 4,373,475.913   357,333.791   MT  0.99985060   -1 03 20.0
 JV6454
 JV6454!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6454!SPC MD       -   0.99998599  x   1.00000895  =   0.99999494
 JV6454!UTM  18      -   0.99998599  x   0.99985060  =   0.99983659
 JV6454
 JV6454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5733373475(NAD 83)
 JV6454
 JV6454                          SUPERSEDED SURVEY CONTROL
 JV6454
 JV6454  NAD 83(2007)-  39 29 56.66695(N)    076 39 33.29176(W) AD(2002.00) 0
 JV6454  ELLIP H (02/10/07)   89.348  (m)                       GP(2002.00)    
 JV6454  ELLIP H (08/30/02)   89.355  (m)                       GP(       ) 4 2
 JV6454  NAD 83(1991)-  39 29 56.66713(N)    076 39 33.29202(W) AD(       ) 1
 JV6454  ELLIP H (04/08/97)   89.331  (m)                       GP(       ) 3 1
 JV6454  NAD 83(1991)-  39 29 56.66790(N)    076 39 33.29309(W) AD(       ) 1
 JV6454  NAD 83(1986)-  39 29 56.66240(N)    076 39 33.29899(W) AD(       ) 1
 JV6454  NAVD 88 (04/08/97)  121.7    (m)  GEOID93  model used  GPS OBS        
 JV6454  NGVD 29 (11/16/90)  121.9    (m)  RAPSU86  model used  GPS OBS        
 JV6454
 JV6454.Superseded values are not recommended for survey control.
 JV6454
 JV6454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6454.See file dsdata.pdf to determine how the superseded data were derived.
 JV6454
 JV6454_MARKER: F = FLANGE-ENCASED ROD
 JV6454_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6454_STAMPING: GPS LR-28 1988
 JV6454_MARK LOGO: MD-005
 JV6454_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6454_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6454_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6454+SATELLITE: SATELLITE OBSERVATIONS - July 17, 2012
 JV6454
 JV6454  HISTORY     - Date     Condition        Report By
 JV6454  HISTORY     - 1988     MONUMENTED       AEROS
 JV6454  HISTORY     - 19950220 GOOD             MCCRON
 JV6454  HISTORY     - 19970615 GOOD             MD-005
 JV6454  HISTORY     - 19980702 GOOD             DMW
 JV6454  HISTORY     - 20000905 GOOD             DMW
 JV6454  HISTORY     - 20020702 GOOD             DMW
 JV6454  HISTORY     - 20030109 GOOD             INDIV
 JV6454  HISTORY     - 20070102 GOOD             GPSSS
 JV6454  HISTORY     - 20120717 GOOD             GPSSS
 JV6454
 JV6454                          STATION DESCRIPTION
 JV6454
 JV6454'DESCRIBED BY AERO SERVICE CORPORATION 1988 (TJA)
 JV6454'THE STATION IS LOCATED ABOUT 2.1 KM (1.3 MI) NORTHWEST OF THE TOWN OF
 JV6454'COCKEYSVILLE, 0.8 KM (0.5 MI) NORTHEAST OF THE INTERSECTION OF SHAWAN
 JV6454'ROAD AND INTERSTATE 83 (INTERCHANGE 20) IN NORTHWEST COCKEYSVILLE, 0.2
 JV6454'KM (0.1 MI) SOUTH OF THE MASONIC HOME LOCATED 2.4 KM (1.5 MI) NORTH OF
 JV6454'COCKEYSVILLE.  OWNERSHIP--BALTIMORE COUNTY, MARYLAND.
 JV6454'
 JV6454'TO REACH THE STATION FROM THE INTERSECTION OF SHAWAN ROAD AND
 JV6454'INTERSTATE 83 (INTERCHANGE 20) IN COCKEYSVILLE GO EAST FOR 0.7 KM
 JV6454'(0.45 MI) ON SHAWAN ROAD TO THE INTERSECTION OF MCCORMICK ROAD.  TURN
 JV6454'LEFT AND GO NORTH FOR 0.2 KM (0.12 MI) ON MCCORMICK ROAD TO THE
 JV6454'INTERSECTION OF INTERNATIONAL CIRCLE.  CONTINUE STRAIGHT AHEAD AND GO
 JV6454'NORTH FOR 0.2 KM (0.15 MI) ON MCCORMICK ROAD TO THE STATION ON THE
 JV6454'RIGHT BETWEEN THE CONCRETE CURB AND THE METAL GUARD RAIL.
 JV6454'
 JV6454'THE STATION IS A STANDARD NGS THREE DIMENSIONAL MARK.  THE LOGO FLANGE
 JV6454'WITH ACCESS COVER IS STAMPED ---GPS LR-28 1988---, AND IS RECESSED 5.1
 JV6454'CM BELOW THE GROUND.  THE STATION IS A 9/16 INCH DIAMETER STAINLESS
 JV6454'STEEL ROD DRIVEN TO REFUSAL AT THE DEPTH OF 1.2 METERS (4 FT) AND IS
 JV6454'RECESSED 10.2 CM BELOW THE GROUND.  LOCATED 0.32 METERS (1.06 FT)
 JV6454'NORTHWEST FROM THE BACK EDGE OF THE CONCRETE CURB ON THE EAST SIDE OF
 JV6454'MCCORMICK ROAD, 19.17 METERS (62.88 FT) SOUTH FROM THE SOUTHEAST
 JV6454'CORNER OF AN IRON GRATE ON THE WEST SIDE OF MCCORMICK ROAD, 0.65
 JV6454'METERS (2.14 FT) NORTHWEST FROM THE EDGE OF AN I-BEAM POST OF A METAL
 JV6454'GUARD RAIL, 5.73 METERS (18.8 FT) SOUTHEAST FROM THE CENTERLINE OF
 JV6454'MCCORMICK ROAD, 0.64 METERS (2.09 FT) NORTHWEST FROM A STANDARD ORANGE
 JV6454'CARSONITE WITNESS POST.
 JV6454
 JV6454                          STATION RECOVERY (1995)
 JV6454
 JV6454'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6454'RECOVERED AS DESCRIBED.
 JV6454
 JV6454                          STATION RECOVERY (1997)
 JV6454
 JV6454'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV6454'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) RECOVERED
 JV6454'AS DESCRIBED.
 JV6454
 JV6454                          STATION RECOVERY (1998)
 JV6454
 JV6454'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 JV6454'RECOVERED IN GOOD CONDITION.
 JV6454
 JV6454                          STATION RECOVERY (2000)
 JV6454
 JV6454'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2000 (DMM)
 JV6454'RECOVERED IN GOOD CONDITION.
 JV6454
 JV6454                          STATION RECOVERY (2002)
 JV6454
 JV6454'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2002 (DMM)
 JV6454'RECOVERED IN GOOD CONDITION.
 JV6454
 JV6454                          STATION RECOVERY (2003)
 JV6454
 JV6454'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (RDS)
 JV6454'RECOVERED AS DESCRIBED
 JV6454
 JV6454                          STATION RECOVERY (2007)
 JV6454
 JV6454'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (TED)
 JV6454'RECOVERED IN GOOD CONDITION BY TED OF SURVEY SERVICES OF MD, LLC
 JV6454
 JV6454                          STATION RECOVERY (2012)
 JV6454
 JV6454'RECOVERY NOTE BY GPS SALES AND SERVICES 2012 (MB)
 JV6454'RECOVERED AND USED BY MIKE BUTLER, DEWEY LILLY AND MIKE ESTES OF
 JV6454'NORTHERN BAY SURVEYS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6455 ***********************************************************************
 JV6455  DESIGNATION -  GPS LR 3
 JV6455  PID         -  JV6455
 JV6455  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6455  COUNTRY     -  US
 JV6455  USGS QUAD   -  RELAY (2016)
 JV6455
 JV6455                         *CURRENT SURVEY CONTROL
 JV6455  ______________________________________________________________________
 JV6455* NAD 83(2011) POSITION- 39 11 31.15317(N) 076 39 42.22399(W)   ADJUSTED
 JV6455* NAD 83(2011) ELLIP HT-     9.981 (meters)        (06/27/12)   ADJUSTED
 JV6455* NAD 83(2011) EPOCH   -  2010.00
 JV6455* NAVD 88 ORTHO HEIGHT -    42.713 (meters)      140.13  (feet) ADJUSTED
 JV6455  ______________________________________________________________________
 JV6455  GEOID HEIGHT    -        -32.704 (meters)                     GEOID18
 JV6455  NAD 83(2011) X  -  1,141,939.217 (meters)                     COMP
 JV6455  NAD 83(2011) Y  - -4,816,370.658 (meters)                     COMP
 JV6455  NAD 83(2011) Z  -  4,008,864.822 (meters)                     COMP
 JV6455  LAPLACE CORR    -         -5.53  (seconds)                    DEFLEC18
 JV6455  DYNAMIC HEIGHT  -         42.691 (meters)      140.06  (feet) COMP
 JV6455  MODELED GRAVITY -    980,095.4   (mgal)                       NAVD 88
 JV6455
 JV6455  VERT ORDER      -  FIRST     CLASS II
 JV6455
 JV6455  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6455  Standards:
 JV6455         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6455            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6455  -------------------------------------------------------------------
 JV6455  NETWORK    2.17   6.12           0.97   0.79   3.12     -0.03381698
 JV6455  -------------------------------------------------------------------
 JV6455  Click here for local accuracies and other accuracy information.
 JV6455
 JV6455.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV6455
 JV6455.The horizontal coordinates were established by GPS observations
 JV6455.and adjusted by the National Geodetic Survey in June 2012.
 JV6455
 JV6455.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6455.been affixed to the stable North American tectonic plate. See 
 JV6455.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6455
 JV6455.The horizontal coordinates are valid at the epoch date displayed above
 JV6455.which is a decimal equivalence of Year/Month/Day.
 JV6455
 JV6455.The orthometric height was determined by differential leveling and
 JV6455.adjusted by the NATIONAL GEODETIC SURVEY
 JV6455.in June 2008.
 JV6455
 JV6455.No vertical observational check was made to the station.
 JV6455
 JV6455.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6455.GEOID18 height accuracy estimate available here.
 JV6455
 JV6455.Click photographs - Photos may exist for this station.
 JV6455
 JV6455.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6455
 JV6455.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6455
 JV6455.The ellipsoidal height was determined by GPS observations
 JV6455.and is referenced to NAD 83.
 JV6455
 JV6455.The dynamic height is computed by dividing the NAVD 88
 JV6455.geopotential number by the normal gravity value computed on the
 JV6455.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6455.degrees latitude (g = 980.6199 gals.).
 JV6455
 JV6455.The modeled gravity was interpolated from observed gravity values.
 JV6455
 JV6455. The following values were computed from the NAD 83(2011) position.
 JV6455
 JV6455;                    North         East     Units Scale Factor Converg.
 JV6455;SPC MD       -   169,373.329   429,222.767   MT  0.99996504   +0 12 44.3
 JV6455;SPC MD       -   555,685.66  1,408,208.36   sFT  0.99996504   +0 12 44.3
 JV6455;UTM  18      - 4,339,397.190   356,493.553   MT  0.99985358   -1 03 00.9
 JV6455
 JV6455!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6455!SPC MD       -   0.99999843  x   0.99996504  =   0.99996347
 JV6455!UTM  18      -   0.99999843  x   0.99985358  =   0.99985201
 JV6455
 JV6455_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5649339397(NAD 83)
 JV6455
 JV6455                          SUPERSEDED SURVEY CONTROL
 JV6455
 JV6455  NAD 83(2007)-  39 11 31.15351(N)    076 39 42.22494(W) AD(2002.00) 0
 JV6455  ELLIP H (02/10/07)   10.012  (m)                       GP(2002.00)    
 JV6455  ELLIP H (09/18/02)   10.026  (m)                       GP(       ) 4 2
 JV6455  ELLIP H (02/17/93)    9.952  (m)                       GP(       ) 4 2
 JV6455  NAD 83(1991)-  39 11 31.15358(N)    076 39 42.22469(W) AD(       ) 1
 JV6455  NAD 83(1986)-  39 11 31.14950(N)    076 39 42.23487(W) AD(       ) 1
 JV6455  NGVD 29 (11/16/90)   43.0    (m)  RAPSU86  model used  GPS OBS        
 JV6455
 JV6455.Superseded values are not recommended for survey control.
 JV6455
 JV6455.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6455.See file dsdata.pdf to determine how the superseded data were derived.
 JV6455
 JV6455_MARKER: F = FLANGE-ENCASED ROD
 JV6455_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6455_STAMPING: GPS LR 3 1988
 JV6455_MARK LOGO: AEROS
 JV6455_PROJECTION: RECESSED 10 CENTIMETERS
 JV6455_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6455_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6455_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6455+SATELLITE: SATELLITE OBSERVATIONS - July 27, 2021
 JV6455_ROD/PIPE-DEPTH: 10.4 meters
 JV6455_SLEEVE-DEPTH  : 1.5 meters
 JV6455
 JV6455  HISTORY     - Date     Condition        Report By
 JV6455  HISTORY     - 1988     MONUMENTED       AEROS
 JV6455  HISTORY     - 1988     GOOD             AEROS
 JV6455  HISTORY     - 19920921 GOOD             NOS
 JV6455  HISTORY     - 19960826 GOOD             DMW
 JV6455  HISTORY     - 19980309 GOOD             DMW
 JV6455  HISTORY     - 20030923 GOOD             USPSQD
 JV6455  HISTORY     - 20071129 GOOD             JARICE
 JV6455  HISTORY     - 20120926 GOOD             WOOLPT
 JV6455  HISTORY     - 20210727 GOOD             MD-001
 JV6455
 JV6455                          STATION DESCRIPTION
 JV6455
 JV6455'DESCRIBED BY AERO SERVICE CORPORATION 1988 (TJA)
 JV6455'THE STATION IS LOCATED ABOUT 1.3 KM (0.8 MI) NORTHEAST OF THE TERMINAL
 JV6455'BUILDING AT THE BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT, 4.0 KM
 JV6455'(2.5 MI) NORTHWEST OF THE NORTHWEST PART OF THE TOWN OF GLEN BURNIE,
 JV6455'3.2 KM (2.0 MI) SOUTH OF THE INTERSECTION OF INTERSTATE 695 AND
 JV6455'MARYLAND ROUTE 295 (ROUTE 3, BALTIMORE-WASHINGTON PARKWAY)
 JV6455'OWNERSHIP--STATE OF MARYLAND.
 JV6455'
 JV6455'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE 695
 JV6455'(BALTIMORE BELTWAY) AND MARYLAND STATE ROUTE 170 (CAMP MEADE ROAD)
 JV6455'LOCATED NORTHEAST FROM THE BWI AIRPORT GO SOUTH FOR 2.4 KM (1.5 MI) ON
 JV6455'MARYLAND STATE ROUTE 170 TO THE STATION ON THE LEFT AT A BREAK IN THE
 JV6455'TREE LINE THAT RUNS ALONG THE EAST SIDE OF ROUTE 170.  THE STATION IS
 JV6455'THREE FEET SOUTHEAST FROM THE EDGE OF THE BLACKTOP SHOULDER PAVING.
 JV6455'
 JV6455'THE STATION IS A STANDARD NGS THREE DIMENSIONAL MARK.  THE LOGO FLANGE
 JV6455'WITH ACCESS COVER IS STAMPED  ---GPS LR-3 1988---, AND IS RECESSED 2.5
 JV6455'CM BELOW THE GROUND.  THE STATION IS A 9/16 INCH DIAMETER STAINLESS
 JV6455'STEEL ROD DRIVEN TO REFUSAL AT THE DEPTH OF 10.4 METERS (34 FT) AND IS
 JV6455'RECESSED 9.5 CM BELOW THE GROUND.
 JV6455'
 JV6455'LOCATED 5.62 METERS (18.45 FT) NORTH-NORTHEAST FROM A CHISELED CROSS
 JV6455'ON THE NORTHEAST RIM OF A BELL TELEPHONE COMPANY MANHOLE, 24.25 METERS
 JV6455'(79.55 FT) SOUTHWEST FROM THE SOUTHWEST EDGE OF A POWER POLE NUMBERED
 JV6455'G + E CO. 371385, 22.78 METERS (74.75 FT) WEST FROM THE WEST EDGE OF A
 JV6455'POWER POLE NUMBERED G + E CO.  211911, 22.16 METERS (72.70 FT)
 JV6455'NORTHWEST FROM THE POST OF A WIRE FENCE, 7.74 METERS (25.4 FT)
 JV6455'SOUTHEAST FROM THE CENTERLINE OF ROUTE 170 (CAMP MEADE ROAD)  0.85
 JV6455'METERS (2.79 FT) NORTHWEST FROM A STANDARD ORANGE CARSONITE WITNESS
 JV6455'POST.
 JV6455
 JV6455                          STATION RECOVERY (1988)
 JV6455
 JV6455'RECOVERY NOTE BY AERO SERVICE CORPORATION 1988
 JV6455'RECOVERED IN GOOD CONDITION.
 JV6455
 JV6455                          STATION RECOVERY (1992)
 JV6455
 JV6455'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JV6455'THE STATION IS LOCATED ABOUT 1.3 KM (0.80 MI) NORTHEAST OF THE
 JV6455'TERMINAL BUILDING AT THE BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT,
 JV6455'4.0 KM (2.50 MI) NORTHWEST OF THE NORTHWEST PART OF THE TOWN OF GLEN
 JV6455'BURNIE, 3.2 KM (2.00 MI) SOUTH OF THE INTERSECTION OF INTERSTATE 695
 JV6455'AND MARYLAND ROUTE 295 (ROUTE 3, BALTIMORE-WASHINGTON PARKWAY).
 JV6455'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE 695
 JV6455'(BALTIMORE BELTWAY) AND MARYLAND STATE ROUTE 170 (CAMP MEADE ROAD)
 JV6455'LOCATED NORTHEAST FROM THE BWI AIRPORT GO SOUTH FOR 2.4 KM (1.50 MI)
 JV6455'ON MARYLAND STATE ROUTE 170 TO THE STATION ON THE LEFT AT A BREAK IN
 JV6455'THE TREE LINE THAT RUNS ALONG THE EAST SIDEOF ROUTE 170. THE STATION
 JV6455'IS THREE FEET FROM THE EDGE OF THE BLACKTOP SHOULDER PAVING.
 JV6455'THE STATION IS A THREE DIMENSIONAL MARK. THE LOGO FLANGE WITH ACCESS
 JV6455'COVER IS STAMPED---GPS LR-3 1988---, AND IS RECESSED 2.5 CM BELOW THE
 JV6455'GROUND. THE STATION IS A 9/16 INCH DIAMETER STAINLESS STEEL ROD
 JV6455'DRIVEN TO REFUSAL AT A DEPTH OF 10.4 METERS (34.1 FT) AND IS RECESSED
 JV6455'9.5 CM BELOW THE GROUND. IT IS 5.62 METERS (18.44 FT) NORTH-NORTHWEST
 JV6455'FROM A CHISELED CROSS ON THE NORTHEAST RIM OF A BELL TELPHONE COMPANY
 JV6455'MANHOLE, 24.25 METERS (79.56 FT) SOUTHWEST FROM THE SOUTHWEST EDGE OF
 JV6455'A POWER POLE NUMBERED G+E CO. 371385, 22.78 METERS (74.74 FT) WEST
 JV6455'FROM THE WEST EDGE OF POWER POLE NUMBERED G+E CO. 211911, 22.16
 JV6455'METERS (72.70 FT) NORTHWEST FROM THE POST OF A WIRE FENCE, 7.74
 JV6455'METERS (25.39 FT) SOUTHEAST FROM THE CENTERLINE OF ROUTE 170 (CAMP
 JV6455'MEADE ROAD), AND 0.85 METERS (2.79 FT) NORTHWEST FROM A STANDARD
 JV6455'ORANGE CARSONITE WITNESS POST.
 JV6455
 JV6455                          STATION RECOVERY (1996)
 JV6455
 JV6455'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1996 (DMM)
 JV6455'RECOVERED AS DESCRIBED.
 JV6455
 JV6455                          STATION RECOVERY (1998)
 JV6455
 JV6455'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1998 (DMM)
 JV6455'RECOVERED IN GOOD CONDITION.
 JV6455
 JV6455                          STATION RECOVERY (2003)
 JV6455
 JV6455'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV6455'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS ABOUT 0.15 MILE
 JV6455'NORTHEAST OF AVIATION BLVD. ON CAMP MEADE ROAD, ABOUT 138 FEET
 JV6455'NORTHEAST OF THE EXTENDED CENTERLINE OF FLIGHTIME DRIVE AT THE
 JV6455'ENTRANCE TO --PARK 'N GO-- AIRPORT PARKING LOT, AND ABOUT 27 FEET
 JV6455'WEST-SOUTHWEST OF A GREEN METAL BOX NUMBER --LOC.40BW-- ALONG THE
 JV6455'RAILROAD.
 JV6455
 JV6455                          STATION RECOVERY (2007)
 JV6455
 JV6455'RECOVERY NOTE BY J A RICE INC 2007 (MRA)
 JV6455'RECOVERED AS DESCRIBED.
 JV6455
 JV6455                          STATION RECOVERY (2012)
 JV6455
 JV6455'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 JV6455'RECOVERED IN GOOD CONDITION.
 JV6455
 JV6455                          STATION RECOVERY (2021)
 JV6455
 JV6455'RECOVERY NOTE BY ALLEGANY COUNTY MARYLAND 2021 (CK)
 JV6455'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6456 ***********************************************************************
 JV6456  DESIGNATION -  GPS LR 6
 JV6456  PID         -  JV6456
 JV6456  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6456  COUNTRY     -  US
 JV6456  USGS QUAD   -  RELAY (2016)
 JV6456
 JV6456                         *CURRENT SURVEY CONTROL
 JV6456  ______________________________________________________________________
 JV6456* NAD 83(2011) POSITION- 39 12 38.66634(N) 076 38 53.80685(W)   ADJUSTED
 JV6456* NAD 83(2011) ELLIP HT-    -1.183 (meters)        (06/27/12)   ADJUSTED
 JV6456* NAD 83(2011) EPOCH   -  2010.00
 JV6456* NAVD 88 ORTHO HEIGHT -    31.6   (meters)      104.    (feet) VERTCON3
 JV6456  ______________________________________________________________________
 JV6456  GEOID HEIGHT    -        -32.726 (meters)                     GEOID18
 JV6456  NAD 83(2011) X  -  1,142,763.862 (meters)                     COMP
 JV6456  NAD 83(2011) Y  - -4,814,813.689 (meters)                     COMP
 JV6456  NAD 83(2011) Z  -  4,010,471.184 (meters)                     COMP
 JV6456  LAPLACE CORR    -         -5.54  (seconds)                    DEFLEC18
 JV6456
 JV6456  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6456  Standards:
 JV6456         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6456            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6456  -------------------------------------------------------------------
 JV6456  NETWORK    2.56   6.37           1.17   0.88   3.25     -0.01730820
 JV6456  -------------------------------------------------------------------
 JV6456  Click here for local accuracies and other accuracy information.
 JV6456
 JV6456.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV6456
 JV6456.The horizontal coordinates were established by GPS observations
 JV6456.and adjusted by the National Geodetic Survey in June 2012.
 JV6456
 JV6456.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6456.been affixed to the stable North American tectonic plate. See 
 JV6456.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6456
 JV6456.The horizontal coordinates are valid at the epoch date displayed above
 JV6456.which is a decimal equivalence of Year/Month/Day.
 JV6456
 JV6456.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6456.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6456
 JV6456.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6456.GEOID18 height accuracy estimate available here.
 JV6456
 JV6456.Click photographs - Photos may exist for this station.
 JV6456
 JV6456.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6456
 JV6456.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6456
 JV6456.The ellipsoidal height was determined by GPS observations
 JV6456.and is referenced to NAD 83.
 JV6456
 JV6456. The following values were computed from the NAD 83(2011) position.
 JV6456
 JV6456;                    North         East     Units Scale Factor Converg.
 JV6456;SPC MD       -   171,459.652   430,376.598   MT  0.99996689   +0 13 14.7
 JV6456;SPC MD       -   562,530.54  1,411,993.89   sFT  0.99996689   +0 13 14.7
 JV6456;UTM  18      - 4,341,457.344   357,692.943   MT  0.99984935   -1 02 31.8
 JV6456
 JV6456!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6456!SPC MD       -   1.00000019  x   0.99996689  =   0.99996708
 JV6456!UTM  18      -   1.00000019  x   0.99984935  =   0.99984954
 JV6456
 JV6456_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5769241457(NAD 83)
 JV6456
 JV6456                          SUPERSEDED SURVEY CONTROL
 JV6456
 JV6456  NAD 83(2007)-  39 12 38.66640(N)    076 38 53.80768(W) AD(2002.00) 0
 JV6456  ELLIP H (02/10/07)   -1.166  (m)                       GP(2002.00)    
 JV6456  ELLIP H (09/18/02)   -1.133  (m)                       GP(       ) 4 2
 JV6456  ELLIP H (02/17/93)   -1.211  (m)                       GP(       ) 4 2
 JV6456  NAD 83(1991)-  39 12 38.66637(N)    076 38 53.80763(W) AD(       ) 1
 JV6456  NAD 83(1986)-  39 12 38.66222(N)    076 38 53.81779(W) AD(       ) 1
 JV6456  NGVD 29 (11/16/90)   31.8    (m)  RAPSU86  model used  GPS OBS        
 JV6456
 JV6456.Superseded values are not recommended for survey control.
 JV6456
 JV6456.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6456.See file dsdata.pdf to determine how the superseded data were derived.
 JV6456
 JV6456_MARKER: F = FLANGE-ENCASED ROD
 JV6456_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6456_STAMPING: GPS LR-6 1988
 JV6456_MARK LOGO: NGS
 JV6456_PROJECTION: RECESSED 3 CENTIMETERS
 JV6456_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6456_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6456_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6456+SATELLITE: SATELLITE OBSERVATIONS - April 26, 2007
 JV6456_ROD/PIPE-DEPTH: 7.0 meters
 JV6456_SLEEVE-DEPTH  : 1.5 meters
 JV6456
 JV6456  HISTORY     - Date     Condition        Report By
 JV6456  HISTORY     - 1988     MONUMENTED       AEROS
 JV6456  HISTORY     - 1988     GOOD             AEROS
 JV6456  HISTORY     - 19920921 GOOD             NOS
 JV6456  HISTORY     - 19961003 GOOD             DMW
 JV6456  HISTORY     - 20020929 GOOD             JCLS
 JV6456  HISTORY     - 20021001 GOOD             JCLS
 JV6456  HISTORY     - 20030923 GOOD             USPSQD
 JV6456  HISTORY     - 20070426 GOOD             JCLS
 JV6456
 JV6456                          STATION DESCRIPTION
 JV6456
 JV6456'DESCRIBED BY AERO SERVICE CORPORATION 1988 (TJA)
 JV6456'THE STATION IS LOCATED ABOUT 4.8 KM (3.0 MI) NORTHWEST OF THE
 JV6456'NORTHWEST PART OF THE TOWN OF GLEN BURNIE, 3.2 KM (2.0 MI) NORTHEAST
 JV6456'OF THE TERMINAL BUILDING AT THE BALTIMORE-WASHINGTON INTERNATIONAL
 JV6456'AIRPORT, 2.4 KM (1.5 MI) SOUTHEAST OF THE INTERSTATE 695 BRIDGE OVER
 JV6456'THE PATAPSCO RIVER IN NORTH LINTHICUM.  OWNERSHIP--STATE OF MARYLAND.
 JV6456'
 JV6456'TO REACH THE STATION FROM INTERCHANGE NUMBER 6 ON INTERSTATE 695 AT
 JV6456'ITS  INTERSECTION WITH MARYLAND ROUTE 170 (CAMP MEADE ROAD) IN NORTH
 JV6456'LINTHICUM, GO NORTHEAST FOR 0.08 KM (0.05 MI) ON MARYLAND STATE ROUTE
 JV6456'170 TO THE STATION ON THE LEFT IN THE GRASS MEDIUM STRIP AT THE END OF
 JV6456'A METAL GUARD RAIL.
 JV6456'
 JV6456'THE STATION IS A STANDARD NGS THREE DIMENSIONAL MARK.  THE LOGO FLANGE
 JV6456'WITH ACCESS COVER IS STAMPED ---GPS LR-6 1988---, AND IS RECESSED 3.2
 JV6456'CM BELOW THE GROUND.  THE STATION IS A 9/16 INCH DIAMETER STAINLESS
 JV6456'STEEL ROD DRIVEN TO REFUSAL AT THE DEPTH OF 7.0 METERS (23 FT) AND IS
 JV6456'RECESSED 10.2 CM BELOW THE GROUND.  LOCATED 1.69 METERS (5.55 FT)
 JV6456'NORTHEAST FROM THE END OF THE CONCRETE BASE OF A METAL GUARD RAIL,
 JV6456'2.02 METERS (6.62 FT) NORTHWEST FROM THE BACK EDGE OF A CONCRETE CURB
 JV6456'AT THE SOUTH SIDE OF THE MEDIAN STRIP, 1.85 METERS (6.07 FT) SOUTHEAST
 JV6456'FROM THE BACK EDGE OF A CONCRETE CURB AT THE NORTH SIDE OF THE MEDIAN
 JV6456'STRIP, 7.48 METERS (24.54 FT) SOUTHWEST FROM A PK NAIL IN THE
 JV6456'CONSTRUCTION JOINT OF THE CONCRETE CURB ON THE NORTH SIDE OF THE
 JV6456'MEDIAN STRIP, 0.79 METERS (2.60 FT) NORTHEAST FROM A STANDARD ORANGE
 JV6456'CARSONITE WITNESS POST.
 JV6456
 JV6456                          STATION RECOVERY (1988)
 JV6456
 JV6456'RECOVERY NOTE BY AERO SERVICE CORPORATION 1988
 JV6456'RECOVERED IN GOOD CONDITION.
 JV6456
 JV6456                          STATION RECOVERY (1992)
 JV6456
 JV6456'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JV6456'THE STATION IS LOCATED ABOUT 4.8 KM (3.00 MI) NORTHWEST OF THE
 JV6456'NORTHWEST PART OF THE TOWN OF GLEN BURNIE, 3.2 KM (2.00 MI) NORTHEAST
 JV6456'OF THE TERMINAL BUILDING AT THE BALTIMORE-WASHINGTON INTERNATIONAL
 JV6456'AIRPORT, 2.4 KM (1.50 MI) SOUTHEAST OF THE INTERSTATE 695 BRIDGE OVER
 JV6456'THE PATAPSCO RIVER IN NORTH LINTHICUM.
 JV6456'TO REACH THE STATION FROM INTERCHANGE NUMBER 6 ON INTERSTATE 695 AT
 JV6456'ITS INTERSECTION WITH MARYLAND ROUTE 170 (CAMP MEADE ROAD) IN NORTH
 JV6456'LINHICUM, GO NORTHWEST FOR 0.08 KM (0.05 MI) ON MD STATE ROUTE 170 TO
 JV6456'THE STATION ON THE LEFT IN THE GRASS MEDIUM STRIP AT THE END OF A
 JV6456'METAL GUARD RAIL.
 JV6456'THE STATION IS A STANDARD NGS THREE DIMENSIONAL MARK. THE LOGO FLANGE
 JV6456'WITH ACCESS COVER IS STAMPED---GPS LR-6 1988---, AND IS RECESSED 3.2
 JV6456'CM BELOW THE GROUND. THE STATION IS A 9/16 INCH DIAMETER STAINLESS
 JV6456'STEEL ROD DRIVEN TO REFUSAL AT A DEPTH OF 7.0 METERS (23.0 FT) AND IS
 JV6456'RECESSED 10.2 CM BELOW THE GROUND. IT IS 1.69 METERS (5.54 FT)
 JV6456'NORTHEAST FROM THE END OF THE CONCRETE BASE OF A METAL GUARD RAIL,
 JV6456'2.02 METERS (6.63 FT) NORTHWEST FROM THE BACK EDGE OF A CONCRETE CURB
 JV6456'AT THE SOUTH SIDE OF THE MEDIAN STRIP, 1.85 METERS (6.07 FT)
 JV6456'SOUTHEAST FROM THE BACK EDGE OF A CONCRETE CURB AT THE NORTH SIDE OF
 JV6456'THE MEDIAN STRIP, 7.48 METERS (24.54 FT) SOUTHWEST FROM A PK NAIL IN
 JV6456'THE CONSTRUCTION JOINT OF THE CONCRETE CURB ON THE NORTH SIDE OF THE
 JV6456'MEDIAN STRIP, AND 0.79 METERS (2.59 FT) NORTHEAST FROM A STANDARD
 JV6456'ORANGE CARSONITE WITNESS POST.
 JV6456
 JV6456                          STATION RECOVERY (1996)
 JV6456
 JV6456'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1996 (DMM)
 JV6456'RECOVERED AS DESCRIBED.
 JV6456
 JV6456                          STATION RECOVERY (2002)
 JV6456
 JV6456'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2002 (MRY)
 JV6456'RECOVERED IN GOOD CONDITION.
 JV6456
 JV6456                          STATION RECOVERY (2002)
 JV6456
 JV6456'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2002
 JV6456'RECOVERED IN GOOD CONDITION.
 JV6456
 JV6456                          STATION RECOVERY (2003)
 JV6456
 JV6456'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV6456'RECOVERED IN GOOD CONDITION.  NOTE-- THE HINGED COVER IS MISSING.
 JV6456'THERE IS NO WITNESS POST PRESENT.  THE STATION'S DESIGNATION WITH AN
 JV6456'ARROW IS PAINTED ON THE CEMENT END OF THE GUARD RAIL.
 JV6456
 JV6456                          STATION RECOVERY (2007)
 JV6456
 JV6456'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2007
 JV6456'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6457 ***********************************************************************
 JV6457  DESIGNATION -  GPS LR 9
 JV6457  PID         -  JV6457
 JV6457  STATE/COUNTY-  MD/BALTIMORE
 JV6457  COUNTRY     -  US
 JV6457  USGS QUAD   -  RELAY (2016)
 JV6457
 JV6457                         *CURRENT SURVEY CONTROL
 JV6457  ______________________________________________________________________
 JV6457* NAD 83(2011) POSITION- 39 14 25.32067(N) 076 37 49.26221(W)   ADJUSTED
 JV6457* NAD 83(2011) ELLIP HT-   -24.428 (meters)        (06/27/12)   ADJUSTED
 JV6457* NAD 83(2011) EPOCH   -  2010.00
 JV6457* NAVD 88 ORTHO HEIGHT -     8.3   (meters)       27.    (feet) GPS OBS
 JV6457  ______________________________________________________________________
 JV6457  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6457  GEOID HEIGHT    -        -33.623 (meters)                     GEOID93
 JV6457  GEOID HEIGHT    -        -32.750 (meters)                     GEOID18
 JV6457  NAD 83(2011) X  -  1,143,785.350 (meters)                     COMP
 JV6457  NAD 83(2011) Y  - -4,812,414.772 (meters)                     COMP
 JV6457  NAD 83(2011) Z  -  4,013,004.418 (meters)                     COMP
 JV6457  LAPLACE CORR    -         -5.57  (seconds)                    DEFLEC18
 JV6457
 JV6457  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6457  Standards:
 JV6457         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6457            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6457  -------------------------------------------------------------------
 JV6457  NETWORK    0.47   0.82           0.21   0.17   0.42      0.00735455
 JV6457  -------------------------------------------------------------------
 JV6457  Click here for local accuracies and other accuracy information.
 JV6457
 JV6457.The horizontal coordinates were established by GPS observations
 JV6457.and adjusted by the National Geodetic Survey in June 2012.
 JV6457
 JV6457.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6457.been affixed to the stable North American tectonic plate. See 
 JV6457.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6457
 JV6457.The horizontal coordinates are valid at the epoch date displayed above
 JV6457.which is a decimal equivalence of Year/Month/Day.
 JV6457
 JV6457.The orthometric height was determined by GPS observations and a
 JV6457.high-resolution geoid model.
 JV6457
 JV6457.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6457.GEOID18 height accuracy estimate available here.
 JV6457
 JV6457.Click photographs - Photos may exist for this station.
 JV6457
 JV6457.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6457
 JV6457.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6457
 JV6457.The ellipsoidal height was determined by GPS observations
 JV6457.and is referenced to NAD 83.
 JV6457
 JV6457. The following values were computed from the NAD 83(2011) position.
 JV6457
 JV6457;                    North         East     Units Scale Factor Converg.
 JV6457;SPC MD       -   174,754.734   431,911.729   MT  0.99997004   +0 13 55.2
 JV6457;SPC MD       -   573,341.16  1,417,030.40   sFT  0.99997004   +0 13 55.2
 JV6457;UTM  18      - 4,344,717.385   359,300.147   MT  0.99984375   -1 01 53.4
 JV6457
 JV6457!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6457!SPC MD       -   1.00000383  x   0.99997004  =   0.99997387
 JV6457!UTM  18      -   1.00000383  x   0.99984375  =   0.99984758
 JV6457
 JV6457_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5930044717(NAD 83)
 JV6457
 JV6457                          SUPERSEDED SURVEY CONTROL
 JV6457
 JV6457  NAD 83(2007)-  39 14 25.32092(N)    076 37 49.26304(W) AD(2002.00) 0
 JV6457  ELLIP H (02/10/07)  -24.414  (m)                       GP(2002.00)    
 JV6457  ELLIP H (08/30/02)  -24.402  (m)                       GP(       ) 4 2
 JV6457  NAD 83(1991)-  39 14 25.32105(N)    076 37 49.26268(W) AD(       ) 1
 JV6457  ELLIP H (04/08/97)  -24.465  (m)                       GP(       ) 3 1
 JV6457  NAD 83(1991)-  39 14 25.32343(N)    076 37 49.26074(W) AD(       ) 1
 JV6457  NAD 83(1986)-  39 14 25.31917(N)    076 37 49.27071(W) AD(       ) 1
 JV6457  NGVD 29 (11/16/90)    8.5    (m)  RAPSU86  model used  GPS OBS        
 JV6457
 JV6457.Superseded values are not recommended for survey control.
 JV6457
 JV6457.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6457.See file dsdata.pdf to determine how the superseded data were derived.
 JV6457
 JV6457_MARKER: F = FLANGE-ENCASED ROD
 JV6457_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 JV6457_STAMPING: GPS LR-9 1988
 JV6457_MARK LOGO: MDMTA
 JV6457_PROJECTION: RECESSED 13 CENTIMETERS
 JV6457_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6457_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6457_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6457+SATELLITE: SATELLITE OBSERVATIONS - October 05, 2022
 JV6457_ROD/PIPE-DEPTH: 13.4 meters
 JV6457
 JV6457  HISTORY     - Date     Condition        Report By
 JV6457  HISTORY     - 1988     MONUMENTED       AEROS
 JV6457  HISTORY     - 19950224 GOOD             MCCRON
 JV6457  HISTORY     - 19960930 GOOD             DMW
 JV6457  HISTORY     - 19990401 GOOD             AMTHOM
 JV6457  HISTORY     - 20200813 GOOD             MD-005
 JV6457  HISTORY     - 20221005 GOOD             WTBALL
 JV6457
 JV6457                          STATION DESCRIPTION
 JV6457
 JV6457'DESCRIBED BY AERO SERVICE CORPORATION 1988 (TJA)
 JV6457'THE STATION IS LOCATED ABOUT 3.2 KM (2.0 MI) EAST-NORTHEAST OF THE
 JV6457'INTERSTATE 695 BRIDGE OVER THE PATAPSCO RIVER IN NORTH LINTHICUM, 2.4
 JV6457'KM (1.5 MI) SOUTHEAST OF THE TOWN OF LANSDOWNE, 3.7 KM (2.3 MI)
 JV6457'NORTHEAST OF INTERCHANGE NUMBER 6 ON INTERSTATE 695 AT ITS
 JV6457'INTERSECTION WITH AND ALONG THE BALTIMORE AND ANAPOLIS RAILROAD.
 JV6457'OWNERSHIP--COUNTY OF BALTIMORE, MARYLAND.
 JV6457'
 JV6457'TO REACH THE STATION FROM THE INTERSECTION OF MARYLAND STATE ROUTE 648
 JV6457'(ANNAPOLIS ROAD) AND PATAPSCO AVENUE IN THE ENGLISH CONSUL SECTION OF
 JV6457'THE CITY OF BALTIMORE, GO SOUTH FOR 1.3 KM (0.8 MI) ON ANNAPOLIS ROAD
 JV6457'(ROUTE 648) TO GEORGIA AVENUE.  TURN LEFT AND GO EAST FOR 0.72 KM
 JV6457'(0.45 MI) ON GEORGIA AVENUE, CROSSING OVER BALTIMORE STREET, TO THE
 JV6457'INTERSECTION OF A DIRT MAINTENANCE ROAD RUNNING ALONG THE WEST SIDE OF
 JV6457'A POWER LINE.  TURN LEFT THROUGH A PIPE RAIL GATE AND GO NORTHEAST FOR
 JV6457'0.68 KM (0.42 MI) ON THE MAINTENANCE ROAD TO THE STATION ON THE LEFT
 JV6457'JUST 12 METERS (40 FT) PAST A DIRT ROAD GOING SOUTHEAST TO THE
 JV6457'SOUTHWEST AREA RECREATION PARK.
 JV6457'
 JV6457'THE STATION IS A STANDARD NGS THREE DIMENSIONAL MARK.  THE LOGO FLANGE
 JV6457'WITH ACCESS COVER IS STAMPED ---GPS LR-9 1988---, AND IS RECESSED 6.4
 JV6457'CM BELOW THE GROUND.  THE STATION IS A 9/16 INCH DIAMETER STAINLESS
 JV6457'STEEL ROD DRIVEN TO REFUSAL AT THE DEPTH OF 13.4 METERS (44 FT) AND IS
 JV6457'RECESSED 12.7 CM BELOW THE GROUND.  LOCATED 16.34 METERS (53.62 FT)
 JV6457'NORTH-NORTHEAST FROM A MARYLAND D.O.T., HARMS 1988 BRASS DISK SURVEY
 JV6457'MONUMENT, 18.67 METERS (61.27 FT) EAST-SOUTHEAST FROM THE GAGE FACE OF
 JV6457'THE SOUTH RAIL OF THE SINGLE TRACK BALTIMORE AND ANNAPOLIS RAILROAD,
 JV6457'17.01 METERS (55.8 FT) NORTH FROM THE CENTER OF THE INTERSECTION OF A
 JV6457'POWER LINE ROAD WITH A DIRT PARK ACCESS ROAD, 29.36 METERS (96.34 FT)
 JV6457'WEST-NORTHWEST FROM THE EDGE OF A VERY TALL POWER LINE POLE NUMBERED
 JV6457'CKT 110521, 1.14 METERS (3.73 FT) SOUTHEAST FROM A STANDARD ORANGE
 JV6457'CARSONITE WITNESS POST.
 JV6457
 JV6457                          STATION RECOVERY (1995)
 JV6457
 JV6457'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6457'RECOVERED AS DESCRIBED.
 JV6457
 JV6457                          STATION RECOVERY (1996)
 JV6457
 JV6457'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1996 (DMM)
 JV6457'RECOVERED AS DESCRIBED.
 JV6457
 JV6457                          STATION RECOVERY (1999)
 JV6457
 JV6457'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 1999
 JV6457'RECOVERED AS DESCRIBED.
 JV6457
 JV6457                          STATION RECOVERY (2020)
 JV6457
 JV6457'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2020 (DFL)
 JV6457'LID IS MISSING.
 JV6457
 JV6457                          STATION RECOVERY (2022)
 JV6457
 JV6457'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2022 (NAW)
 JV6457'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4192 ***********************************************************************
 JV4192  DESIGNATION -  GRACEHAM
 JV4192  PID         -  JV4192
 JV4192  STATE/COUNTY-  MD/FREDERICK
 JV4192  COUNTRY     -  US
 JV4192  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV4192
 JV4192                         *CURRENT SURVEY CONTROL
 JV4192  ______________________________________________________________________
 JV4192* NAD 83(1991) POSITION- 39 36 43.44814(N) 077 22 48.46719(W)   ADJUSTED
 JV4192* NAD 83(1991) ELLIP HT-   118.558 (meters)        (01/27/92)   ADJUSTED
 JV4192* NAVD 88 ORTHO HEIGHT -   151.7   (meters)      498.    (feet) VERTCON3
 JV4192  ______________________________________________________________________
 JV4192  GEOID HEIGHT    -        -33.117 (meters)                     GEOID18
 JV4192  NAD 83(1991) X  -  1,075,011.430 (meters)                     COMP
 JV4192  NAD 83(1991) Y  - -4,801,502.341 (meters)                     COMP
 JV4192  NAD 83(1991) Z  -  4,044,972.363 (meters)                     COMP
 JV4192  LAPLACE CORR    -          0.76  (seconds)                    DEFLEC18
 JV4192  HORZ ORDER      -  FIRST
 JV4192  ELLP ORDER      -  FOURTH    CLASS I
 JV4192
 JV4192.The horizontal coordinates were established by classical geodetic methods
 JV4192.and adjusted by the National Geodetic Survey in January 1992.
 JV4192
 JV4192.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4192.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4192
 JV4192.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4192.GEOID18 height accuracy estimate available here.
 JV4192
 JV4192.Click photographs - Photos may exist for this station.
 JV4192
 JV4192.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV4192
 JV4192.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4192
 JV4192.The ellipsoidal height was determined by GPS observations
 JV4192.and is referenced to NAD 83.
 JV4192
 JV4192. The following values were computed from the NAD 83(1991) position.
 JV4192
 JV4192;                    North         East     Units Scale Factor Converg.
 JV4192;SPC MD       -   216,025.709   367,355.347   MT  1.00003237   -0 14 18.9
 JV4192;SPC MD       -   708,744.35  1,205,231.67   sFT  1.00003237   -0 14 18.9
 JV4192;UTM  18      - 4,387,408.823   295,676.709   MT  1.00011402   -1 31 05.0
 JV4192
 JV4192!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4192!SPC MD       -   0.99998140  x   1.00003237  =   1.00001377
 JV4192!UTM  18      -   0.99998140  x   1.00011402  =   1.00009542
 JV4192
 JV4192:                Primary Azimuth Mark                     Grid Az
 JV4192:SPC MD       -  GRACEHAM AZ MK                           045 47 47.6
 JV4192:UTM  18      -  GRACEHAM AZ MK                           047 04 33.7
 JV4192
 JV4192_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9567687408(NAD 83)
 JV4192
 JV4192|---------------------------------------------------------------------|
 JV4192| PID    Reference Object                     Distance      Geod. Az  |
 JV4192|                                                           dddmmss.s |
 JV4192| JV4177 EMMITSBURG MT ST MARYS CHAPEL       APPROX. 8.0 KM 0161757.5 |
 JV4192| CJ9892 GRACEHAM AZ MK                                     0453328.7 |
 JV4192| CJ9893 GRACEHAM RM 1                        97.469 METERS 21833     |
 JV4192| CJ9894 GRACEHAM RM 2                         9.590 METERS 26358     |
 JV4192|---------------------------------------------------------------------|
 JV4192
 JV4192                          SUPERSEDED SURVEY CONTROL
 JV4192
 JV4192  NAD 83(1986)-  39 36 43.45036(N)    077 22 48.47207(W) AD(       ) 1
 JV4192  NAD 27      -  39 36 43.09500(N)    077 22 49.52200(W) AD(       ) 1
 JV4192  NGVD 29 (03/22/89)  152.0    (m)  RAPSU86  model used  GPS OBS        
 JV4192
 JV4192.Superseded values are not recommended for survey control.
 JV4192
 JV4192.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4192.See file dsdata.pdf to determine how the superseded data were derived.
 JV4192
 JV4192_MARKER: DS = TRIANGULATION STATION DISK
 JV4192_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4192_STAMPING: GRACEHAM 1939
 JV4192_MARK LOGO: CGS
 JV4192_PROJECTION: PROJECTING 2 CENTIMETERS
 JV4192_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4192_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4192+STABILITY: SURFACE MOTION
 JV4192_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4192+SATELLITE: SATELLITE OBSERVATIONS - February 03, 1989
 JV4192
 JV4192  HISTORY     - Date     Condition        Report By
 JV4192  HISTORY     - 1939     MONUMENTED       CGS
 JV4192  HISTORY     - 1939     GOOD             CGS
 JV4192  HISTORY     - 1987     GOOD             NGS
 JV4192  HISTORY     - 19880915 GOOD             NGS
 JV4192  HISTORY     - 19890203 GOOD
 JV4192
 JV4192                          STATION DESCRIPTION
 JV4192
 JV4192'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4192'STATION IS ON A LOW CULTIVATED RIDGE ABOUT 2 MILES E BY S OF
 JV4192'THURMONT AND 0.2 MILE S OF GRACEHAM, ON LAND OWNED AND OCCUPIED BY
 JV4192'MR. U.E. SMITH, WHO LIVES ABOUT 0.15 MILE E OF THE STATION.  THE
 JV4192'MARK IS IN AN EW FENCE LINE ABOUT 260 FEET E OF THE CENTER OF A
 JV4192'DIRT ROAD AND ABOUT 300 FEET W OF A FENCE CORNER ON GROUND ABOUT
 JV4192'5 FEET LOWER THAN THAT ABOUT 50 YARDS TO THE N.
 JV4192'
 JV4192'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV4192'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 JV4192'
 JV4192'REFERENCE NO.1 IS SW OF THE STATION, 2.0 FEET E OF FENCE LINE, 12
 JV4192'FEET E OF CENTER OF DIRT ROAD, AND ABOUT 210 FEET S OF FENCE CORNER.
 JV4192'
 JV4192'REFERENCE NO.2 IS IN THE EW FENCE LINE JUST W OF THE STATION.
 JV4192'
 JV4192'AZIMUTH MARK IS ABOUT 0.75 MILE NNE OF THE STATION, 20 FEET
 JV4192'S OF FENCE CORNER, 12 FEET E OF CENTER OF DIRT ROAD AND 1 FOOT W
 JV4192'OF RIGHT-OF-WAY FENCE.  THE AZIMUTH MARK IS REACHED FROM THE SIDE
 JV4192'ROAD RIGHT IN GRACEHAM BY GOING E ON PAVED ROAD TO A SIDE ROAD TO
 JV4192'THE LEFT ON THE E SIDE OF THE FIRST HOUSE (RED BRICK) E OF
 JV4192'RAILROAD TRACKS THENCE LEFT, NORTHERLY, ON DIRT ROAD FOR 0.45 MILE
 JV4192'TO WHERE THIS ROAD MAKES ITS SECOND JOG TO THE LEFT AND THE
 JV4192'AZIMUTH WILL BE FOUND IN FENCE LINE ON THE RIGHT OF THE ROAD.
 JV4192'
 JV4192'THE STATION CAN BE REACHED FROM THE STOP LIGHT IN THURMONT BY
 JV4192'GOING E ON PAVED ROAD FOR 1.0 MILE TO A FORK, THENCE LEFT FORK ON
 JV4192'PAVED ROAD FOR 0.8 MILE TO A SIDE ROAD TO THE RIGHT AT TOP OF HILL
 JV4192'IN GRACEHAM, THENCE RIGHT, S, ON DIRT ROAD 0.2 MILE AND IT WILL BE
 JV4192'FOUND 260 FEET TO THE E OF THE ROAD IN FENCE LINE.
 JV4192'
 JV4192'HEIGHT OF LIGHT ABOVE STATION MARK 8 METERS.
 JV4192
 JV4192                          STATION RECOVERY (1939)
 JV4192
 JV4192'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939
 JV4192'RECOVERED IN GOOD CONDITION.
 JV4192
 JV4192                          STATION RECOVERY (1987)
 JV4192
 JV4192'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (AJL)
 JV4192'THE STATION WAS RECOVERED AT THIS DATE.  NEW DESCRIPTION FOLLOWS.
 JV4192'
 JV4192'THE STATION IS LOCATED ABOUT 3.2 KM (2.0 MI) SOUTHEAST OF THURMONT,
 JV4192'0.3 KM (0.2 MI) SOUTH OF GRACEHAM, ON THE TOP OF A LOW RIDGE IN THE
 JV4192'MIDDLE OF AN OPEN GRASSY FIELD.  OWNERSHIP--THE SMITH BROTHERS, 8231
 JV4192'D. ROCKY RIDGE ROAD, THURMONT, MD 21788.  PHONE (301) 271-2340.  THE
 JV4192'OWNERS LIVE ON THE FARM 0.2 KM (0.1 MI) EAST OF THE STATION.
 JV4192'
 JV4192'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 77, 550 N AND
 JV4192'806 S IN DOWNTOWN THURMONT AT THE STOPLIGHT, GO EAST FOR 1.6 KM
 JV4192'(1.0 MI) ON HIGHWAYS 77 AND 550 TO A FORK.  BEAR LEFT, EAST, FOR 1.5
 JV4192'KM (0.9 MI) ON HIGHWAY 77 TO A PAVED CROSSROAD (GRACEHAM ROAD) AT THE
 JV4192'TOP OF A SLIGHT HILL.  CONTINUE STRAIGHT AHEAD AND GO EAST FOR 0.2 KM
 JV4192'(0.1 MI) ON HIGHWAY 77 THROUGH GRACEHAM TO A CURVE LEFT IN THE HIGHWAY
 JV4192'AND A PAVED ROAD BEARING RIGHT.  BEAR RIGHT, EAST, THEN SOUTH, FOR 0.3
 JV4192'KM (0.2 MI) ON THE PAVED THEN GRAVEL DRIVE ON THE SOUTH SIDE OF THE
 JV4192'MORAVIAN CHURCH TO A DIRT DRIVE ON THE RIGHT AT THE SMITH FARM.  TURN
 JV4192'RIGHT, WEST, FOR 10.0 METERS (33.0 FT) TO A GATE BETWEEN THE BARNS.
 JV4192'PASS THROUGH THE GATE AND TURN LEFT, SOUTHWEST, FOR 0.2 KM (0.1 MI) ON
 JV4192'A DIM TRACK ROAD TO A GATE IN THE FENCE LINE.  PASS THROUGH THE GATE
 JV4192'AND TURN RIGHT, WEST, FOR 20.0 METERS (65.0 FT) THEN TURN RIGHT AGAIN
 JV4192'AND PASS THROUGH AN ELECTRIC FENCE.  TURN LEFT, WEST, FOR 135.0 METERS
 JV4192'(443.0 FT) FOLLOWING THE ELECTRIC FENCE LINE TO THE STATION ON THE TOP
 JV4192'OF THE LOW RIDGE.
 JV4192'
 JV4192'THE STATION IS A STANDARD CGS DISK STAMPED ---GRACEHAM 1939---, SET
 JV4192'INTO THE TOP OF A SQUARE CONCRETE MONUMENT 30 CM ON SIDE PROJECTING 2
 JV4192'CM ABOVE GROUND.  LOCATED 88.1 METERS (289.0 FT) EAST-SOUTHEAST FROM
 JV4192'THE FIRST POWER POLE NORTH OF A POWER POLE WITH A TRANSFORMER, 79.2
 JV4192'METERS (260.0 FT) EAST FROM THE CENTER OF GRACEHAM ROAD, 74.4 METERS
 JV4192'(244.0 FT) EAST-NORTHEAST FROM A POWER POLE WITH A TRANSFORMER, 9.6
 JV4192'METERS (31.5 FT) EAST FROM THE REFERENCE MARK NO. 2, AND ABOUT 66
 JV4192'PACES SOUTH OF THE HIGHEST PART OF THE RIDGE.
 JV4192'
 JV4192'DESCRIBED BY C. L. SMITH, TYPED BY C. L. SMITH.
 JV4192
 JV4192                          STATION RECOVERY (1988)
 JV4192
 JV4192'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 JV4192'RECOVERED IN GOOD CONDITION.
 JV4192
 JV4192                          STATION RECOVERY (1989)
 JV4192
 JV4192'RECOVERED 1989
 JV4192'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5358 ***********************************************************************
 JV5358  DESIGNATION -  GRACES POINT 1898
 JV5358  PID         -  JV5358
 JV5358  STATE/COUNTY-  MD/BALTIMORE
 JV5358  COUNTRY     -  US
 JV5358  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5358
 JV5358                         *CURRENT SURVEY CONTROL
 JV5358  ______________________________________________________________________
 JV5358* NAD 83(1991) POSITION- 39 20 09.23433(N) 076 19 51.88377(W)   ADJUSTED
 JV5358* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5358  ______________________________________________________________________
 JV5358  GEOID HEIGHT    -        -33.148 (meters)                     GEOID18
 JV5358  LAPLACE CORR    -         -2.63  (seconds)                    DEFLEC18
 JV5358  HORZ ORDER      -  THIRD
 JV5358
 JV5358.The horizontal coordinates were established by classical geodetic methods
 JV5358.and adjusted by the National Geodetic Survey in January 1992.
 JV5358
 JV5358.The orthometric height was scaled from a topographic map.
 JV5358
 JV5358.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5358.GEOID18 height accuracy estimate available here.
 JV5358
 JV5358.Click photographs - Photos may exist for this station.
 JV5358
 JV5358.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5358
 JV5358. The following values were computed from the NAD 83(1991) position.
 JV5358
 JV5358;                    North         East     Units Scale Factor Converg.
 JV5358;SPC MD       -   185,507.167   457,669.707   MT  0.99998203   +0 25 11.4
 JV5358;SPC MD       -   608,618.10  1,501,538.03   sFT  0.99998203   +0 25 11.4
 JV5358;UTM  18      - 4,354,897.391   385,284.453   MT  0.99976203   -0 50 37.7
 JV5358
 JV5358!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5358!SPC MD       -   1.00000508  x   0.99998203  =   0.99998711
 JV5358!UTM  18      -   1.00000508  x   0.99976203  =   0.99976711
 JV5358
 JV5358:                Primary Azimuth Mark                     Grid Az
 JV5358:SPC MD       -  GRACES QUARTER 2 1898                    333 37 46.1
 JV5358:UTM  18      -  GRACES QUARTER 2 1898                    334 53 35.2
 JV5358
 JV5358_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8528454897(NAD 83)
 JV5358
 JV5358|---------------------------------------------------------------------|
 JV5358| PID    Reference Object                     Distance      Geod. Az  |
 JV5358|                                                           dddmmss.s |
 JV5358| JV5339 GRACES QUARTER 2 1898               APPROX. 1.4 KM 3340257.5 |
 JV5358|---------------------------------------------------------------------|
 JV5358
 JV5358                          SUPERSEDED SURVEY CONTROL
 JV5358
 JV5358  NAD 83(1986)-  39 20 09.22885(N)    076 19 51.89151(W) AD(       ) 3
 JV5358  NAD 27      -  39 20 08.85100(N)    076 19 53.04900(W) AD(       ) 3
 JV5358  USSD        -  39 20 09.19900(N)    076 19 52.88900(W) AD(       ) 3
 JV5358
 JV5358.Superseded values are not recommended for survey control.
 JV5358
 JV5358.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5358.See file dsdata.pdf to determine how the superseded data were derived.
 JV5358
 JV5358_MARKER: N = NAIL
 JV5358_SETTING: 0 = UNSPECIFIED SETTING
 JV5358_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5358
 JV5358  HISTORY     - Date     Condition        Report By
 JV5358  HISTORY     - 1898     MONUMENTED       CGS
 JV5358  HISTORY     - 1934     SEE DESCRIPTION  CGS
 JV5358
 JV5358                          STATION DESCRIPTION
 JV5358
 JV5358'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JV5358'ON W SIDE OF GUNPOWDER RIVER, ON BATTERY POINT, ON SOFT MARSH, 125
 JV5358'YARDS NW FROM THE POINT WHERE THE BLIND (OR BATTERY) IS, AND ABOUT
 JV5358'400 YARDS SE OF THE CLUMP OF TREES AND SHANTIES.  STATION MARKED
 JV5358'BY TWO 4-INCH TILE PIPES SET ONE ABOVE THE OTHER AND A NAIL IN A
 JV5358'PINE STUB EXTENDING TO THE SURFACE OF THE GROUND.
 JV5358
 JV5358                          STATION RECOVERY (1934)
 JV5358
 JV5358'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5358'THIS STATION WAS SEARCHED FOR WITHOUT SUCCESS.  IT IS RECOMMENDED
 JV5358'THAT THIS STATION BE LISTED AS LOST.
 JV5358'
 JV5358'A NEW TRIANGULATION STATION NAMED BATTERY 1934 WAS PLACED ON THIS
 JV5358'POINT OF LAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5339 ***********************************************************************
 JV5339  DESIGNATION -  GRACES QUARTER 2 1898
 JV5339  PID         -  JV5339
 JV5339  STATE/COUNTY-  MD/BALTIMORE
 JV5339  COUNTRY     -  US
 JV5339  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5339
 JV5339                         *CURRENT SURVEY CONTROL
 JV5339  ______________________________________________________________________
 JV5339* NAD 83(1991) POSITION- 39 20 51.04136(N) 076 20 18.08895(W)   ADJUSTED
 JV5339* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV5339  ______________________________________________________________________
 JV5339  GEOID HEIGHT    -        -33.136 (meters)                     GEOID18
 JV5339  LAPLACE CORR    -         -2.77  (seconds)                    DEFLEC18
 JV5339  HORZ ORDER      -  THIRD
 JV5339
 JV5339.The horizontal coordinates were established by classical geodetic methods
 JV5339.and adjusted by the National Geodetic Survey in January 1992.
 JV5339
 JV5339.The orthometric height was scaled from a topographic map.
 JV5339
 JV5339.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5339.GEOID18 height accuracy estimate available here.
 JV5339
 JV5339.Click photographs - Photos may exist for this station.
 JV5339
 JV5339.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5339
 JV5339. The following values were computed from the NAD 83(1991) position.
 JV5339
 JV5339;                    North         East     Units Scale Factor Converg.
 JV5339;SPC MD       -   186,791.843   457,032.811   MT  0.99998368   +0 24 55.0
 JV5339;SPC MD       -   612,832.90  1,499,448.48   sFT  0.99998368   +0 24 55.0
 JV5339;UTM  18      - 4,356,195.517   384,676.179   MT  0.99976375   -0 50 55.1
 JV5339
 JV5339!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5339!SPC MD       -   1.00000383  x   0.99998368  =   0.99998751
 JV5339!UTM  18      -   1.00000383  x   0.99976375  =   0.99976757
 JV5339
 JV5339:                Primary Azimuth Mark                     Grid Az
 JV5339:SPC MD       -  OLIVER 1898                              359 47 51.7
 JV5339:UTM  18      -  OLIVER 1898                              001 03 41.8
 JV5339
 JV5339_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8467656195(NAD 83)
 JV5339
 JV5339|---------------------------------------------------------------------|
 JV5339| PID    Reference Object                     Distance      Geod. Az  |
 JV5339|                                                           dddmmss.s |
 JV5339| JV5340 OLIVER 1898                         APPROX. 2.8 KM 0001246.7 |
 JV5339| JV5314 HYDROGRAPHIC SIGNAL                 APPROX. 5.1 KM 0264450.0 |
 JV5339| JV5311 REMBOLTS HOUSE WEST CHIMNEY         APPROX. 5.2 KM 0314843.9 |
 JV5339| JV5336 GRACES QUARTER HOUSE CHIMNEY        265.261 METERS 30317     |
 JV5339|---------------------------------------------------------------------|
 JV5339
 JV5339                          SUPERSEDED SURVEY CONTROL
 JV5339
 JV5339  NAD 83(1986)-  39 20 51.03593(N)    076 20 18.09653(W) AD(       ) 3
 JV5339  NAD 27      -  39 20 50.66000(N)    076 20 19.25200(W) AD(       ) 3
 JV5339  USSD        -  39 20 51.00600(N)    076 20 19.09200(W) AD(       ) 3
 JV5339
 JV5339.Superseded values are not recommended for survey control.
 JV5339
 JV5339.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5339.See file dsdata.pdf to determine how the superseded data were derived.
 JV5339
 JV5339_MARKER: N = NAIL
 JV5339_SETTING: 0 = UNSPECIFIED SETTING
 JV5339_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5339
 JV5339  HISTORY     - Date     Condition        Report By
 JV5339  HISTORY     - 1898     MONUMENTED       CGS
 JV5339
 JV5339                          STATION DESCRIPTION
 JV5339
 JV5339'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JV5339'ON W SIDE OF GUNPOWDER RIVER, ABOUT 1/6 MILE SE BY E FROM
 JV5339'CLUBHOUSE AT GRACES QUARTER, 20 FEET FROM EDGE OF 35-FOOT BLUFF,
 JV5339'AND 7 FEET OUTSIDE OF FENCE.  MARKED BY TWO 4-INCH DRAIN TILES SET
 JV5339'ONE ABOVE THE OTHER AND A NAIL IN A PINE STUB EXTENDING TO THE
 JV5339'SURFACE OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5342 ***********************************************************************
 JV5342  DESIGNATION -  GRACES QUARTER 3
 JV5342  PID         -  JV5342
 JV5342  STATE/COUNTY-  MD/BALTIMORE
 JV5342  COUNTRY     -  US
 JV5342  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5342
 JV5342                         *CURRENT SURVEY CONTROL
 JV5342  ______________________________________________________________________
 JV5342* NAD 83(1991) POSITION- 39 20 49.25075(N) 076 20 16.86115(W)   ADJUSTED
 JV5342* NAVD 88 ORTHO HEIGHT -     9.35  (+/-2cm)       30.7   (feet) VERTCON3
 JV5342  ______________________________________________________________________
 JV5342  GEOID HEIGHT    -        -33.137 (meters)                     GEOID18
 JV5342  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 JV5342  HORZ ORDER      -  FIRST
 JV5342  VERT ORDER      -  THIRD ? (See Below)
 JV5342
 JV5342.The horizontal coordinates were established by classical geodetic methods
 JV5342.and adjusted by the National Geodetic Survey in January 1992.
 JV5342
 JV5342.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5342.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5342
 JV5342.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5342.GEOID18 height accuracy estimate available here.
 JV5342
 JV5342.The vertical order pertains to the NGVD 29 superseded value.
 JV5342
 JV5342.Click photographs - Photos may exist for this station.
 JV5342
 JV5342.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5342
 JV5342. The following values were computed from the NAD 83(1991) position.
 JV5342
 JV5342;                    North         East     Units Scale Factor Converg.
 JV5342;SPC MD       -   186,736.837   457,062.609   MT  0.99998361   +0 24 55.7
 JV5342;SPC MD       -   612,652.44  1,499,546.24   sFT  0.99998361   +0 24 55.7
 JV5342;UTM  18      - 4,356,139.879   384,704.751   MT  0.99976367   -0 50 54.3
 JV5342
 JV5342!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5342!SPC MD       -   1.00000373  x   0.99998361  =   0.99998734
 JV5342!UTM  18      -   1.00000373  x   0.99976367  =   0.99976740
 JV5342
 JV5342:                Primary Azimuth Mark                     Grid Az
 JV5342:SPC MD       -  GRACES QUARTER 3 RM 2 AZIMUTH            277 16 42.2
 JV5342:UTM  18      -  GRACES QUARTER 3 RM 2 AZIMUTH            278 32 32.2
 JV5342
 JV5342_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8470456139(NAD 83)
 JV5342
 JV5342|---------------------------------------------------------------------|
 JV5342| PID    Reference Object                     Distance      Geod. Az  |
 JV5342|                                                           dddmmss.s |
 JV5342| JV5306 AIRWAY BEACON 61 A                  APPROX. 6.3 KM 0374931.8 |
 JV5342| CA9459 GRACES QUARTER 3 RM 1                33.258 METERS 13247     |
 JV5342| JV5383 AIRWAY BEACON 60                    APPROX. 5.7 KM 2460552.3 |
 JV5342| CA9460 GRACES QUARTER 3 RM 2 AZIMUTH                      2774137.9 |
 JV5342| CA9461 GRACES QUARTER 3 RM 3                32.720 METERS 32727     |
 JV5342|---------------------------------------------------------------------|
 JV5342
 JV5342                          SUPERSEDED SURVEY CONTROL
 JV5342
 JV5342  NAD 83(1986)-  39 20 49.24491(N)    076 20 16.86863(W) AD(       ) 1
 JV5342  NAD 27      -  39 20 48.85800(N)    076 20 18.01400(W) AD(       ) 1
 JV5342  NGVD 29               9.60   (m)           31.5    (f) LEVELING    3  
 JV5342
 JV5342.Superseded values are not recommended for survey control.
 JV5342
 JV5342.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5342.See file dsdata.pdf to determine how the superseded data were derived.
 JV5342
 JV5342_MARKER: DS = TRIANGULATION STATION DISK
 JV5342_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5342_STAMPING: GRACES QUARTER 3 1933
 JV5342_MARK LOGO: CGS
 JV5342_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5342+STABILITY: SURFACE MOTION
 JV5342
 JV5342  HISTORY     - Date     Condition        Report By
 JV5342  HISTORY     - 1933     MONUMENTED       CGS
 JV5342  HISTORY     - 1939     GOOD             CGS
 JV5342  HISTORY     - 1974     GOOD             NGS
 JV5342
 JV5342                          STATION DESCRIPTION
 JV5342
 JV5342'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5342'THE STATION IS ON A NECK OF LAND LYING BETWEEN THE GUNPOWDER RIVER
 JV5342'AND SALTPETER CREEK, ON PROPERTY OWNED BY THE WAR DEPARTMENT AND
 JV5342'LEASED TO THE GRACE QUARTER DUCKING CLUB, MR. CALEB F. FOX,
 JV5342'MANAGER.  THE STATION IS LOCATED ON A KNOLL ABOUT 300 YARDS SE OF
 JV5342'THE CLUBHOUSE ON THE HIGHEST GROUND IN THE VICINITY.  THE STATION
 JV5342'IS ABOUT 10 YARDS W OF THE EDGE OF A HIGH BANK OVERLOOKING THE
 JV5342'BAY, THE EDGE OF WHICH IS ABOUT 50 FEET FROM THE BANK.
 JV5342'
 JV5342'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE DISKS
 JV5342'SET IN CONCRETE, AS DESCRIBED IN NOTES 1B, 7A, AND 11A.
 JV5342'
 JV5342'REFERENCE MARK NO.1 IS 2 YARDS W OF THE EDGE OF THE BANK.
 JV5342'
 JV5342'REFERENCE MARK NO.2, (THE AZIMUTH MARK) IS ABOUT 200 YARDS SW OF
 JV5342'THE CLUBHOUSE, 6 PACES S OF A ROAD RUNNING NE TO THE CLUBHOUSE,
 JV5342'AND 4 PACES E OF A CEDAR TREE.
 JV5342'
 JV5342'REFERENCE MARK NO.3 IS 5 YARDS W OF THE EDGE OF THE BANK BETWEEN A
 JV5342'THIN STRIP OF BRUSHY WOODS AND A FIELD FORMERLY IN CULTIVATION.
 JV5342'
 JV5342'TO REACH THE STATION FROM BALTIMORE GO N ON U.S. HIGHWAY 40 TO
 JV5342'WHITEMARSH, THEN TURN E AND GO 4-1/2 MILES TO CHASE AND KEEP
 JV5342'STRAIGHT AT A HARD-SURFACE CROSSROADS.  CONTINUE STRAIGHT E ALONG
 JV5342'MARBLE AVENUE FOR 0.5 MILE TO A GATE AND SIGN THIS IS NOT OLIVER
 JV5342'BEACH.  TURN RIGHT AT THIS SIGN AND FOLLOW MAIN ROAD 1.4 MILES TO
 JV5342'A FORK, TURN LEFT 0.2 MILE TO THE CLUBHOUSE.
 JV5342'
 JV5342'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5342
 JV5342                          STATION RECOVERY (1939)
 JV5342
 JV5342'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5342'STATION RECOVERED.
 JV5342'
 JV5342'REFERENCE MARK NO.1 IS 33.25 METERS S OF THE STATION, AND 2 METERS
 JV5342'W OF THE EDGE OF THE BANK.
 JV5342'
 JV5342'REFERENCE MARK NO.3 IS 33.13 METERS N OF THE STATION, AND 4-1/2
 JV5342'METERS W OF THE EDGE OF THE BANK.
 JV5342
 JV5342                          STATION RECOVERY (1974)
 JV5342
 JV5342'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RDB)
 JV5342'STATION AND REFERENCE MARK NO. 3 WERE RECOVERED IN GOOD CONDITION.
 JV5342'THE DISTANCE TO R.M. NO. 3 FROM THE STATION AGREED WITH THE 1933
 JV5342'DISTANCE OF 108.68 FEET.
 JV5342'
 JV5342'A NEW TO REACH FOLLOWS--
 JV5342'
 JV5342'FROM EDGEWOOD, DRIVE SOUTHWESTERLY ON HWY. 40 TO JUNCTION OF
 JV5342'EBENEZEER RD.  TURN LEFT, AND DRIVE SOUTHEASTERLY ON EBENEZEER RD.
 JV5342'FOR 3.6 MILES TO THE PENN CENTRAL RAILROAD TRACKS.  CROSS TRACKS,
 JV5342'AND FOLLOW EBENEZEER RD. ANOTHER .5 MILE TO THE ENTRANCE TO
 JV5342'GUNPOWDER STATE PARK.  KEEP ON EBENEZEER RD. AND DRIVE
 JV5342'SOUTHEASTERLY ANOTHER .6 MILE TO A SHARP RIGHT TURN IN THE MAIN
 JV5342'ROAD AND A SECONDARY ROAD STRAIGHT AHEAD.  FOLLOW SECONDARY ROAD
 JV5342'STRAIGHT AHEAD FOR .1 MILE TO A GATE (LOCKED, PERMISSION FROM
 JV5342'ABERDEEN PROVING GROUND TO ENTER IS NECESSARY) AND JUST PAST THE
 JV5342'GATE A FORK IN THE ROAD.  TAKE RIGHT FORK AND DRIVE .55 MILE ON
 JV5342'IMPROVED DIRT AND PAVED ROAD TO A T INTERSECTION AND FENCE
 JV5342'BLOCKING FURTHER TRUCK TRAVEL STRAIGHT.  AHEAD YOU WILL SEE A
 JV5342'CHEMICAL STORAGE DUMP MARKED BY A RING OF 50 FOOT HIGH METAL PIPES
 JV5342'ABOUT 2 INCHES IN DIAMETER.  THE STATION IS ON THE BLUFF OF THE
 JV5342'SHORELINE, APPROXIMATELY ON LINE BETWEEN THIS CIRCULAR DUMP AND
 JV5342'MAXWELL PT. (TO THE EAST).  STATION IS 10 FEET WEST OF A BARBED
 JV5342'WIRE FENCE, 25 FEET WEST OF THE EDGE OF THE BLUFF OF THE
 JV5342'SHORELINE, 7 FEET NORTH OF REMAINS OF A 6 INCH DIAMETER TELEPHONE
 JV5342'POLE.  REFERENCE MARKS 1 AND 2 WERE SEARCHED FOR AND NOT FOUND AND
 JV5342'ARE BELIEVED WASHED AWAY.  REFERENCE MARK 3 WAS RECOVERED AS NOTED
 JV5342'ABOVE.  THE AREA AROUND THE STATION IS HEAVILY WOODED.  A GREAT
 JV5342'DEAL OF CLEARING MAY BE NECESSARY TO USE THIS STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6764 ***********************************************************************
 JV6764  DESIGNATION -  GRACETON
 JV6764  PID         -  JV6764
 JV6764  STATE/COUNTY-  MD/HARFORD
 JV6764  COUNTRY     -  US
 JV6764  USGS QUAD   -  FAWN GROVE (2019)
 JV6764
 JV6764                         *CURRENT SURVEY CONTROL
 JV6764  ______________________________________________________________________
 JV6764* NAD 83(2011) POSITION- 39 42 00.77118(N) 076 23 28.00859(W)   ADJUSTED
 JV6764* NAD 83(2011) ELLIP HT-   112.148 (meters)        (06/27/12)   ADJUSTED
 JV6764* NAD 83(2011) EPOCH   -  2010.00
 JV6764* NAVD 88 ORTHO HEIGHT -   144.8   (meters)      475.    (feet) VERTCON3
 JV6764  ______________________________________________________________________
 JV6764  GEOID HEIGHT    -        -32.699 (meters)                     GEOID18
 JV6764  NAD 83(2011) X  -  1,156,257.996 (meters)                     COMP
 JV6764  NAD 83(2011) Y  - -4,776,156.383 (meters)                     COMP
 JV6764  NAD 83(2011) Z  -  4,052,502.995 (meters)                     COMP
 JV6764  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 JV6764
 JV6764  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6764  Standards:
 JV6764         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6764            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6764  -------------------------------------------------------------------
 JV6764  NETWORK    1.81   5.84           0.74   0.71   2.98      0.37272777
 JV6764  -------------------------------------------------------------------
 JV6764  Click here for local accuracies and other accuracy information.
 JV6764
 JV6764.The horizontal coordinates were established by GPS observations
 JV6764.and adjusted by the National Geodetic Survey in June 2012.
 JV6764
 JV6764.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6764.been affixed to the stable North American tectonic plate. See 
 JV6764.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6764
 JV6764.The horizontal coordinates are valid at the epoch date displayed above
 JV6764.which is a decimal equivalence of Year/Month/Day.
 JV6764
 JV6764.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6764.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6764
 JV6764.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6764.GEOID18 height accuracy estimate available here.
 JV6764
 JV6764.Click photographs - Photos may exist for this station.
 JV6764
 JV6764.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6764
 JV6764.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6764
 JV6764.The ellipsoidal height was determined by GPS observations
 JV6764.and is referenced to NAD 83.
 JV6764
 JV6764. The following values were computed from the NAD 83(2011) position.
 JV6764
 JV6764;                    North         East     Units Scale Factor Converg.
 JV6764;SPC MD       -   225,918.924   452,224.230   MT  1.00005336   +0 22 55.8
 JV6764;SPC MD       -   741,202.34  1,483,672.33   sFT  1.00005336   +0 22 55.8
 JV6764;SPC PA S     -    41,633.565   716,547.019   MT  1.00004463   +0 52 53.9
 JV6764;SPC PA S     -   136,592.79  2,350,871.34   sFT  1.00004463   +0 52 53.9
 JV6764;UTM  18      - 4,395,409.733   380,735.141   MT  0.99977512   -0 53 19.3
 JV6764
 JV6764!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6764!SPC MD       -   0.99998241  x   1.00005336  =   1.00003577
 JV6764!SPC PA S     -   0.99998241  x   1.00004463  =   1.00002704
 JV6764!UTM  18      -   0.99998241  x   0.99977512  =   0.99975753
 JV6764
 JV6764:                Primary Azimuth Mark                     Grid Az
 JV6764:SPC MD       -  GRACETON AZ MK                           169 05 06.2
 JV6764:SPC PA S     -  GRACETON AZ MK                           168 35 08.1
 JV6764:UTM  18      -  GRACETON AZ MK                           170 21 21.3
 JV6764
 JV6764_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8073595409(NAD 83)
 JV6764
 JV6764|---------------------------------------------------------------------|
 JV6764| PID    Reference Object                     Distance      Geod. Az  |
 JV6764|                                                           dddmmss.s |
 JV6764| JV6765 GRACETON AZ MK                      APPROX. 0.6 KM 1692802.0 |
 JV6764|---------------------------------------------------------------------|
 JV6764
 JV6764                          SUPERSEDED SURVEY CONTROL
 JV6764
 JV6764  NAD 83(2007)-  39 42 00.77146(N)    076 23 28.00931(W) AD(2002.00) 0
 JV6764  ELLIP H (02/10/07)  112.168  (m)                       GP(2002.00)    
 JV6764  ELLIP H (09/18/02)  112.178  (m)                       GP(       ) 4 2
 JV6764  NAD 83(1991)-  39 42 00.77155(N)    076 23 28.00879(W) AD(       ) 1
 JV6764  ELLIP H (01/27/92)  112.178  (m)                       GP(       ) 4 1
 JV6764  NAD 83(1986)-  39 42 00.76440(N)    076 23 28.01486(W) AD(       ) 1
 JV6764  NGVD 29 (06/18/91)  145.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6764
 JV6764.Superseded values are not recommended for survey control.
 JV6764
 JV6764.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6764.See file dsdata.pdf to determine how the superseded data were derived.
 JV6764
 JV6764_MARKER: DD = SURVEY DISK
 JV6764_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6764_STAMPING: 109 GRACETON 1989
 JV6764_MARK LOGO: MD-025
 JV6764_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6764_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6764+STABILITY: SURFACE MOTION
 JV6764_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6764+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6764
 JV6764  HISTORY     - Date     Condition        Report By
 JV6764  HISTORY     - 1989     MONUMENTED       RDA
 JV6764
 JV6764                          STATION DESCRIPTION
 JV6764
 JV6764'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6764'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6764'4.0 MILES WEST OF THE VILLAGE OF WHITEFORD.
 JV6764'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 136 AND
 JV6764'STATE HIGHWAY 24 AT FIVE FORKS PROCEED SOUTHEAST ALONG HIGHWAY 24 0.45
 JV6764'MILES TO ITS INTERSECTION WITH ST. MARYS ROAD.  TURN LEFT AND PROCEED
 JV6764'EAST ALONG ST. MARYS ROAD 1.1 MILES TO ITS INTERSECTION WITH STATE
 JV6764'HIGHWAY 624.  TURN LEFT AND PROCEED NORTH ALONG HIGHWAY 624 0.55 MILES
 JV6764'TO THE STATION ON THE LEFT.
 JV6764'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6764'ABOUT 1 INCH BELOW GROUND STAMPED 109 GRACETON 1989.  THE STATION IS
 JV6764'10.9 FEET SOUTH OF C AND P OF MARYLAND POWER NUMBER 2, 22.4 FEET WEST
 JV6764'OF THE CENTERLINE OF HIGHWAY 624, AND 64.8 FEET NORTH OF DEER CROSSING
 JV6764'CAUTION SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6765 ***********************************************************************
 JV6765  DESIGNATION -  GRACETON AZ MK
 JV6765  PID         -  JV6765
 JV6765  STATE/COUNTY-  MD/HARFORD
 JV6765  COUNTRY     -  US
 JV6765  USGS QUAD   -  FAWN GROVE (2019)
 JV6765
 JV6765                         *CURRENT SURVEY CONTROL
 JV6765  ______________________________________________________________________
 JV6765* NAD 83(2011) POSITION- 39 41 42.01527(N) 076 23 23.49444(W)   ADJUSTED
 JV6765* NAD 83(2011) ELLIP HT-    88.480 (meters)        (06/27/12)   ADJUSTED
 JV6765* NAD 83(2011) EPOCH   -  2010.00
 JV6765* NAVD 88 ORTHO HEIGHT -   121.2   (meters)      398.    (feet) VERTCON3
 JV6765  ______________________________________________________________________
 JV6765  GEOID HEIGHT    -        -32.697 (meters)                     GEOID18
 JV6765  NAD 83(2011) X  -  1,156,445.183 (meters)                     COMP
 JV6765  NAD 83(2011) Y  - -4,776,472.490 (meters)                     COMP
 JV6765  NAD 83(2011) Z  -  4,052,042.790 (meters)                     COMP
 JV6765  LAPLACE CORR    -         -3.10  (seconds)                    DEFLEC18
 JV6765
 JV6765  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6765  Standards:
 JV6765         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6765            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6765  -------------------------------------------------------------------
 JV6765  NETWORK    1.92   6.17           0.77   0.76   3.15      0.41901116
 JV6765  -------------------------------------------------------------------
 JV6765  Click here for local accuracies and other accuracy information.
 JV6765
 JV6765.The horizontal coordinates were established by GPS observations
 JV6765.and adjusted by the National Geodetic Survey in June 2012.
 JV6765
 JV6765.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6765.been affixed to the stable North American tectonic plate. See 
 JV6765.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6765
 JV6765.The horizontal coordinates are valid at the epoch date displayed above
 JV6765.which is a decimal equivalence of Year/Month/Day.
 JV6765
 JV6765.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6765.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6765
 JV6765.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6765.GEOID18 height accuracy estimate available here.
 JV6765
 JV6765.Click photographs - Photos may exist for this station.
 JV6765
 JV6765.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6765
 JV6765.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6765
 JV6765.The ellipsoidal height was determined by GPS observations
 JV6765.and is referenced to NAD 83.
 JV6765
 JV6765. The following values were computed from the NAD 83(2011) position.
 JV6765
 JV6765;                    North         East     Units Scale Factor Converg.
 JV6765;SPC MD       -   225,341.167   452,335.644   MT  1.00005205   +0 22 58.6
 JV6765;SPC MD       -   739,306.81  1,484,037.86   sFT  1.00005205   +0 22 58.6
 JV6765;SPC PA S     -    41,056.806   716,663.465   MT  1.00004581   +0 52 56.8
 JV6765;SPC PA S     -   134,700.54  2,351,253.38   sFT  1.00004581   +0 52 56.8
 JV6765;UTM  18      - 4,394,829.809   380,833.687   MT  0.99977483   -0 53 16.1
 JV6765
 JV6765!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6765!SPC MD       -   0.99998612  x   1.00005205  =   1.00003817
 JV6765!SPC PA S     -   0.99998612  x   1.00004581  =   1.00003193
 JV6765!UTM  18      -   0.99998612  x   0.99977483  =   0.99976095
 JV6765
 JV6765:                Primary Azimuth Mark                     Grid Az
 JV6765:SPC MD       -  GRACETON                                 349 05 06.3
 JV6765:SPC PA S     -  GRACETON                                 348 35 08.1
 JV6765:UTM  18      -  GRACETON                                 350 21 21.0
 JV6765
 JV6765_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8083394829(NAD 83)
 JV6765
 JV6765|---------------------------------------------------------------------|
 JV6765| PID    Reference Object                     Distance      Geod. Az  |
 JV6765|                                                           dddmmss.s |
 JV6765| JV6764 GRACETON                            APPROX. 0.6 KM 3492804.9 |
 JV6765|---------------------------------------------------------------------|
 JV6765
 JV6765                          SUPERSEDED SURVEY CONTROL
 JV6765
 JV6765  NAD 83(2007)-  39 41 42.01555(N)    076 23 23.49516(W) AD(2002.00) 0
 JV6765  ELLIP H (02/10/07)   88.500  (m)                       GP(2002.00)    
 JV6765  ELLIP H (09/18/02)   88.511  (m)                       GP(       ) 4 2
 JV6765  NAD 83(1991)-  39 41 42.01565(N)    076 23 23.49463(W) AD(       ) 1
 JV6765  ELLIP H (01/27/92)   88.511  (m)                       GP(       ) 4 1
 JV6765  NAD 83(1986)-  39 41 42.00849(N)    076 23 23.50070(W) AD(       ) 1
 JV6765  NGVD 29 (06/18/91)  121.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6765
 JV6765.Superseded values are not recommended for survey control.
 JV6765
 JV6765.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6765.See file dsdata.pdf to determine how the superseded data were derived.
 JV6765
 JV6765_MARKER: DZ = AZIMUTH MARK DISK
 JV6765_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6765_STAMPING: 109 GRACETON 1989
 JV6765_MARK LOGO: MD-025
 JV6765_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6765_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6765+STABILITY: SURFACE MOTION
 JV6765_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6765+SATELLITE: SATELLITE OBSERVATIONS - January 04, 1990
 JV6765
 JV6765  HISTORY     - Date     Condition        Report By
 JV6765  HISTORY     - 1989     MONUMENTED       RDA
 JV6765  HISTORY     - 19900104 GOOD
 JV6765
 JV6765                          STATION DESCRIPTION
 JV6765
 JV6765'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6765'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTH ALONG HIGHWAY
 JV6765'624 0.35 MILES TO THE MARK ON THE LEFT.
 JV6765'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6765'ABOUT 1 INCH BELOW GROUND STAMPED 109 GRACETON 1989.  THE MARK IS
 JV6765'155.9 FEET SOUTH OF CONOWINGO POWER POLE NUMBER 20340, 6.7 FEET
 JV6765'NORTHWEST OF CONOWINGO POWER POLE NUMBER 9911, A 22.6 FEET EAST OF THE
 JV6765'CENTERLINE OF HIGHWAY 624 AND 1930.38 FEET FROM THE STATION.
 JV6765
 JV6765                          STATION RECOVERY (1990)
 JV6765
 JV6765'RECOVERED 1990
 JV6765'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7302 ***********************************************************************
 JV7302  DESIGNATION -  GRAFTON
 JV7302  PID         -  JV7302
 JV7302  STATE/COUNTY-  MD/HARFORD
 JV7302  COUNTRY     -  US
 JV7302  USGS QUAD   -  JARRETTSVILLE (2016)
 JV7302
 JV7302                         *CURRENT SURVEY CONTROL
 JV7302  ______________________________________________________________________
 JV7302* NAD 83(2011) POSITION- 39 34 32.05952(N) 076 24 04.57764(W)   ADJUSTED
 JV7302* NAD 83(2011) ELLIP HT-   118.588 (meters)        (06/27/12)   ADJUSTED
 JV7302* NAD 83(2011) EPOCH   -  2010.00
 JV7302* NAVD 88 ORTHO HEIGHT -   151.3   (meters)      496.    (feet) GPS OBS
 JV7302  ______________________________________________________________________
 JV7302  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7302  GEOID HEIGHT    -        -32.960 (meters)                     GEOID93
 JV7302  GEOID HEIGHT    -        -32.646 (meters)                     GEOID18
 JV7302  NAD 83(2011) X  -  1,157,488.096 (meters)                     COMP
 JV7302  NAD 83(2011) Y  - -4,784,946.977 (meters)                     COMP
 JV7302  NAD 83(2011) Z  -  4,041,849.826 (meters)                     COMP
 JV7302  LAPLACE CORR    -         -2.34  (seconds)                    DEFLEC18
 JV7302
 JV7302  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7302  Standards:
 JV7302         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7302            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7302  -------------------------------------------------------------------
 JV7302  NETWORK    1.16   2.67           0.51   0.42   1.36      0.25576276
 JV7302  -------------------------------------------------------------------
 JV7302  Click here for local accuracies and other accuracy information.
 JV7302
 JV7302.The horizontal coordinates were established by GPS observations
 JV7302.and adjusted by the National Geodetic Survey in June 2012.
 JV7302
 JV7302.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7302.been affixed to the stable North American tectonic plate. See 
 JV7302.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7302
 JV7302.The horizontal coordinates are valid at the epoch date displayed above
 JV7302.which is a decimal equivalence of Year/Month/Day.
 JV7302
 JV7302.The orthometric height was determined by GPS observations and a
 JV7302.high-resolution geoid model.
 JV7302
 JV7302.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7302.GEOID18 height accuracy estimate available here.
 JV7302
 JV7302.Click photographs - Photos may exist for this station.
 JV7302
 JV7302.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7302
 JV7302.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7302
 JV7302.The ellipsoidal height was determined by GPS observations
 JV7302.and is referenced to NAD 83.
 JV7302
 JV7302. The following values were computed from the NAD 83(2011) position.
 JV7302
 JV7302;                    North         East     Units Scale Factor Converg.
 JV7302;SPC MD       -   212,074.200   451,443.750   MT  1.00002438   +0 22 32.8
 JV7302;SPC MD       -   695,780.10  1,481,111.70   sFT  1.00002438   +0 22 32.8
 JV7302;UTM  18      - 4,381,589.322   379,648.345   MT  0.99977833   -0 53 34.3
 JV7302
 JV7302!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7302!SPC MD       -   0.99998140  x   1.00002438  =   1.00000578
 JV7302!UTM  18      -   0.99998140  x   0.99977833  =   0.99975973
 JV7302
 JV7302:                Primary Azimuth Mark                     Grid Az
 JV7302:SPC MD       -  GRAFTON AZ MK                            084 43 17.6
 JV7302:UTM  18      -  GRAFTON AZ MK                            085 59 24.7
 JV7302
 JV7302_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7964881589(NAD 83)
 JV7302
 JV7302|---------------------------------------------------------------------|
 JV7302| PID    Reference Object                     Distance      Geod. Az  |
 JV7302|                                                           dddmmss.s |
 JV7302| JV7303 GRAFTON AZ MK                       APPROX. 0.6 KM 0850550.4 |
 JV7302|---------------------------------------------------------------------|
 JV7302
 JV7302                          SUPERSEDED SURVEY CONTROL
 JV7302
 JV7302  NAD 83(2007)-  39 34 32.05975(N)    076 24 04.57837(W) AD(2002.00) 0
 JV7302  ELLIP H (02/10/07)  118.607  (m)                       GP(2002.00)    
 JV7302  ELLIP H (08/30/02)  118.630  (m)                       GP(       ) 4 2
 JV7302  NAD 83(1991)-  39 34 32.05988(N)    076 24 04.57727(W) AD(       ) 1
 JV7302  ELLIP H (08/17/94)  118.599  (m)                       GP(       ) 4 1
 JV7302
 JV7302.Superseded values are not recommended for survey control.
 JV7302
 JV7302.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7302.See file dsdata.pdf to determine how the superseded data were derived.
 JV7302
 JV7302_MARKER: DD = SURVEY DISK
 JV7302_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7302_STAMPING: 144 GRAFTON 1993
 JV7302_MARK LOGO: MD-025
 JV7302_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7302_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7302+STABILITY: SURFACE MOTION
 JV7302_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7302+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7302
 JV7302  HISTORY     - Date     Condition        Report By
 JV7302  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7302
 JV7302                          STATION DESCRIPTION
 JV7302
 JV7302'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7302'THE STATION IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 1.0 MILES
 JV7302'SOUTHWEST OF VILLAGE OF FOREST HILL.
 JV7302'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 24 AND
 JV7302'STATE HIGHWAY 23 PROCEED WEST ALONG STATE HIGHWAY 23 0.8 MILES TO ITS
 JV7302'INTERSECTION WITH GRAFTON SHOP ROAD AND THE STATION ON THE RIGHT IN
 JV7302'THE NORTHWEST CORNER OF THE INTERSECTION.
 JV7302'THE STATION IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7302'CONCRETE FLUSH WITH THE GROUND STAMPED 144 GRAFTON 1993.
 JV7302'THE STATION IS 28.2 FEET NORTH FROM THE CENTERLINE OF STATE HIGHWAY
 JV7302'23, 28.8 FEET WEST FROM A BOX CULVERT, AND 3.0 FEET NORTH FROM A
 JV7302'GUARD RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7303 ***********************************************************************
 JV7303  DESIGNATION -  GRAFTON AZ MK
 JV7303  PID         -  JV7303
 JV7303  STATE/COUNTY-  MD/HARFORD
 JV7303  COUNTRY     -  US
 JV7303  USGS QUAD   -  JARRETTSVILLE (2016)
 JV7303
 JV7303                         *CURRENT SURVEY CONTROL
 JV7303  ______________________________________________________________________
 JV7303* NAD 83(2011) POSITION- 39 34 33.85019(N) 076 23 37.58853(W)   ADJUSTED
 JV7303* NAD 83(2011) ELLIP HT-   108.844 (meters)        (06/27/12)   ADJUSTED
 JV7303* NAD 83(2011) EPOCH   -  2010.00
 JV7303* NAVD 88 ORTHO HEIGHT -   141.5   (meters)      464.    (feet) GPS OBS
 JV7303  ______________________________________________________________________
 JV7303  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7303  GEOID HEIGHT    -        -32.970 (meters)                     GEOID93
 JV7303  GEOID HEIGHT    -        -32.654 (meters)                     GEOID18
 JV7303  NAD 83(2011) X  -  1,158,104.138 (meters)                     COMP
 JV7303  NAD 83(2011) Y  - -4,784,753.985 (meters)                     COMP
 JV7303  NAD 83(2011) Z  -  4,041,886.186 (meters)                     COMP
 JV7303  LAPLACE CORR    -         -2.27  (seconds)                    DEFLEC18
 JV7303
 JV7303  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7303  Standards:
 JV7303         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7303            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7303  -------------------------------------------------------------------
 JV7303  NETWORK    1.15   2.61           0.51   0.41   1.33      0.21932306
 JV7303  -------------------------------------------------------------------
 JV7303  Click here for local accuracies and other accuracy information.
 JV7303
 JV7303.The horizontal coordinates were established by GPS observations
 JV7303.and adjusted by the National Geodetic Survey in June 2012.
 JV7303
 JV7303.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7303.been affixed to the stable North American tectonic plate. See 
 JV7303.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7303
 JV7303.The horizontal coordinates are valid at the epoch date displayed above
 JV7303.which is a decimal equivalence of Year/Month/Day.
 JV7303
 JV7303.The orthometric height was determined by GPS observations and a
 JV7303.high-resolution geoid model.
 JV7303
 JV7303.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7303.GEOID18 height accuracy estimate available here.
 JV7303
 JV7303.Click photographs - Photos may exist for this station.
 JV7303
 JV7303.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7303
 JV7303.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7303
 JV7303.The ellipsoidal height was determined by GPS observations
 JV7303.and is referenced to NAD 83.
 JV7303
 JV7303. The following values were computed from the NAD 83(2011) position.
 JV7303
 JV7303;                    North         East     Units Scale Factor Converg.
 JV7303;SPC MD       -   212,133.677   452,087.527   MT  1.00002449   +0 22 49.8
 JV7303;SPC MD       -   695,975.24  1,483,223.83   sFT  1.00002449   +0 22 49.8
 JV7303;UTM  18      - 4,381,634.520   380,293.121   MT  0.99977643   -0 53 17.1
 JV7303
 JV7303!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7303!SPC MD       -   0.99998292  x   1.00002449  =   1.00000741
 JV7303!UTM  18      -   0.99998292  x   0.99977643  =   0.99975936
 JV7303
 JV7303:                Primary Azimuth Mark                     Grid Az
 JV7303:SPC MD       -  GRAFTON                                  264 43 17.8
 JV7303:UTM  18      -  GRAFTON                                  265 59 24.7
 JV7303
 JV7303_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8029381634(NAD 83)
 JV7303
 JV7303|---------------------------------------------------------------------|
 JV7303| PID    Reference Object                     Distance      Geod. Az  |
 JV7303|                                                           dddmmss.s |
 JV7303| JV7302 GRAFTON                             APPROX. 0.6 KM 2650607.6 |
 JV7303|---------------------------------------------------------------------|
 JV7303
 JV7303                          SUPERSEDED SURVEY CONTROL
 JV7303
 JV7303  NAD 83(2007)-  39 34 33.85039(N)    076 23 37.58929(W) AD(2002.00) 0
 JV7303  ELLIP H (02/10/07)  108.863  (m)                       GP(2002.00)    
 JV7303  ELLIP H (08/30/02)  108.885  (m)                       GP(       ) 4 2
 JV7303  NAD 83(1991)-  39 34 33.85044(N)    076 23 37.58836(W) AD(       ) 1
 JV7303  ELLIP H (08/17/94)  108.859  (m)                       GP(       ) 4 1
 JV7303
 JV7303.Superseded values are not recommended for survey control.
 JV7303
 JV7303.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7303.See file dsdata.pdf to determine how the superseded data were derived.
 JV7303
 JV7303_MARKER: DD = SURVEY DISK
 JV7303_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7303_STAMPING: 144 GRAFTON AZ MK 1993
 JV7303_MARK LOGO: MD-025
 JV7303_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7303_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7303+STABILITY: SURFACE MOTION
 JV7303_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7303+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7303
 JV7303  HISTORY     - Date     Condition        Report By
 JV7303  HISTORY     - 1993     MONUMENTED       GEOMET
 JV7303
 JV7303                          STATION DESCRIPTION
 JV7303
 JV7303'DESCRIBED BY GEOMETRICS GPS INCORPORATED 1993
 JV7303'THE AZIMUTH MARK IS LOCATED IN HARFORD COUNTY, MARYLAND ABOUT 1.0
 JV7303'MILES SOUTHWEST OF THE VILLAGE OF FOREST HILL.
 JV7303'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE HIGHWAY 24
 JV7303'AND STATE HIGHWAY 23 PROCEED WEST ALONG STATE HIGHWAY 23 0.4 MILES TO
 JV7303'THE AZIMUTH MARK ON THE LEFT.
 JV7303'THE AZIMUTH MARK IS A STANDARD HARFORD COUNTY, MD STATION DISK SET IN
 JV7303'CONCRETE FLUSH WITH THE GROUND STAMPED 144 GRAFTON AZ MK 1993.
 JV7303'THE AZIMUTH MARK IS 4.5 FEET SOUTHWEST FROM THE FACE OF CURB OF STATE
 JV7303'HIGHWAY 23, 28.1 FEET SOUTHWEST FROM THE CENTERLINE OF STATE HIGHWAY
 JV7303'23, AND 15.5 FEET SOUTHEAST FROM THE END OF A GUARD RAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6339 ***********************************************************************
 HV6339  DESIGNATION -  GRAM
 HV6339  PID         -  HV6339
 HV6339  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6339  COUNTRY     -  US
 HV6339  USGS QUAD   -  ANNAPOLIS (2016)
 HV6339
 HV6339                         *CURRENT SURVEY CONTROL
 HV6339  ______________________________________________________________________
 HV6339* NAD 83(1991) POSITION- 38 57 05.68285(N) 076 28 02.65395(W)   ADJUSTED
 HV6339* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 HV6339  ______________________________________________________________________
 HV6339  GEOID HEIGHT    -        -33.424 (meters)                     GEOID18
 HV6339  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 HV6339  HORZ ORDER      -  THIRD
 HV6339
 HV6339.The horizontal coordinates were established by classical geodetic methods
 HV6339.and adjusted by the National Geodetic Survey in January 1992.
 HV6339
 HV6339.The orthometric height was scaled from a topographic map.
 HV6339
 HV6339.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6339.GEOID18 height accuracy estimate available here.
 HV6339
 HV6339.Click photographs - Photos may exist for this station.
 HV6339
 HV6339.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6339
 HV6339. The following values were computed from the NAD 83(1991) position.
 HV6339
 HV6339;                    North         East     Units Scale Factor Converg.
 HV6339;SPC MD       -   142,765.634   446,165.780   MT  0.99995072   +0 20 03.4
 HV6339;SPC MD       -   468,390.25  1,463,795.56   sFT  0.99995072   +0 20 03.4
 HV6339;UTM  18      - 4,312,426.992   372,845.419   MT  0.99979909   -0 55 21.5
 HV6339
 HV6339!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6339!SPC MD       -   1.00000340  x   0.99995072  =   0.99995412
 HV6339!UTM  18      -   1.00000340  x   0.99979909  =   0.99980249
 HV6339
 HV6339:                Primary Azimuth Mark                     Grid Az
 HV6339:SPC MD       -  GREENBURY PT                             022 14 11.5
 HV6339:UTM  18      -  GREENBURY PT                             023 29 36.4
 HV6339
 HV6339_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7284512426(NAD 83)
 HV6339
 HV6339|---------------------------------------------------------------------|
 HV6339| PID    Reference Object                     Distance      Geod. Az  |
 HV6339|                                                           dddmmss.s |
 HV6339| HV6350 GREENBURY PT                        APPROX. 2.8 KM 0223414.9 |
 HV6339| HV6317 YELLOW HOUSE SOUTH CHIMNEY          APPROX. 3.7 KM 0233932.3 |
 HV6339| HV6365 GREENBURY POINT SHOAL LH            APPROX. 2.2 KM 0315300.0 |
 HV6339| CX2807 GRAM                                               08957     |
 HV6339| CX2808 GRAM RM                                            21151     |
 HV6339|---------------------------------------------------------------------|
 HV6339
 HV6339                          SUPERSEDED SURVEY CONTROL
 HV6339
 HV6339  NAD 83(1986)-  38 57 05.67912(N)    076 28 02.66558(W) AD(       ) 3
 HV6339  NAD 27      -  38 57 05.27100(N)    076 28 03.80000(W) AD(       ) 3
 HV6339  USSD        -  38 57 05.64100(N)    076 28 03.64000(W) AD(       ) 3
 HV6339
 HV6339.Superseded values are not recommended for survey control.
 HV6339
 HV6339.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6339.See file dsdata.pdf to determine how the superseded data were derived.
 HV6339
 HV6339_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6339
 HV6339  HISTORY     - Date     Condition        Report By
 HV6339  HISTORY     - 1906     MONUMENTED       MDSFC
 HV6339  HISTORY     - 1910     GOOD             CGS
 HV6339  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6339
 HV6339                          STATION DESCRIPTION
 HV6339
 HV6339'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV6339'ON THE SW SHORE OF ANNAPOLIS ROADS, NEAR NW ENTRANCE TO CAT HOLE
 HV6339'CREEK, ABOUT 1-1/2 MILES SSW OF GREENSBURY LIGHT, AND 53 FEET
 HV6339'BACK FROM EDGE OF A BLUFF 30 FEET HIGH.  A SMALL ROUND KNOB IS
 HV6339'60 FEET W OF AND 5 FEET HIGHER THAN THE STATION.  STATION MARKED
 HV6339'BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV6339'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6339'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6339'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6339'DISTANCES AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF
 HV6339'REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 4-INCH LOCUST STUMP,
 HV6339'22.95 METERS (75.3 FEET), N 15 DEG 24 MIN W.  TANGENT TO HORN
 HV6339'POINT, 1-1/2 MILES, N 13 DEG 52 MIN W.  WATER TOWER, OPPOSITE
 HV6339'NAVAL ACADEMY, 2 MILES, N 5 DEG 52 MIN W.  S CHIMNEY OF HOUSE
 HV6339'ON GREENBURY POINT, 2 MILES, N 23 DEG 39 MIN E.  NAIL IN BLAZE ON
 HV6339'3-INCH LOCUST TREE, 26.40 METERS (86.6 FEET), S 50 DEG 33 MIN E.  N
 HV6339'TANGENT OF ROOF OF OLD BAY RIDGE HOTEL, 1 MILE, S 44 DEG 49 MIN E.
 HV6339
 HV6339                          STATION RECOVERY (1932)
 HV6339
 HV6339'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6339'THE STATION IS LOST.  A BEACH AND GOLF CLUBHOUSE HAS BEEN BUILT
 HV6339'AT THE LOCATION AND THE GROUND CUT AND FILLED IN THE APPROACH TO IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5798 ***********************************************************************
 HV5798  DESIGNATION -  GRANARY
 HV5798  PID         -  HV5798
 HV5798  STATE/COUNTY-  MD/QUEEN ANNES
 HV5798  COUNTRY     -  US
 HV5798  USGS QUAD   -  QUEENSTOWN (2016)
 HV5798
 HV5798                         *CURRENT SURVEY CONTROL
 HV5798  ______________________________________________________________________
 HV5798* NAD 83(1991) POSITION- 38 52 55.19516(N) 076 08 21.29971(W)   ADJUSTED
 HV5798* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5798  ______________________________________________________________________
 HV5798  GEOID HEIGHT    -        -34.278 (meters)                     GEOID18
 HV5798  LAPLACE CORR    -         -4.16  (seconds)                    DEFLEC18
 HV5798  HORZ ORDER      -  THIRD
 HV5798
 HV5798.The horizontal coordinates were established by classical geodetic methods
 HV5798.and adjusted by the National Geodetic Survey in January 1992.
 HV5798
 HV5798.The orthometric height was scaled from a topographic map.
 HV5798
 HV5798.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5798.GEOID18 height accuracy estimate available here.
 HV5798
 HV5798.Click photographs - Photos may exist for this station.
 HV5798
 HV5798.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5798
 HV5798. The following values were computed from the NAD 83(1991) position.
 HV5798
 HV5798;                    North         East     Units Scale Factor Converg.
 HV5798;SPC MD       -   135,259.101   474,682.524   MT  0.99994985   +0 32 24.9
 HV5798;SPC MD       -   443,762.57  1,557,354.25   sFT  0.99994985   +0 32 24.9
 HV5798;UTM  18      - 4,304,298.695   401,185.309   MT  0.99972023   -0 42 54.7
 HV5798
 HV5798!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5798!SPC MD       -   1.00000525  x   0.99994985  =   0.99995510
 HV5798!UTM  18      -   1.00000525  x   0.99972023  =   0.99972548
 HV5798
 HV5798:                Primary Azimuth Mark                     Grid Az
 HV5798:SPC MD       -  PHILIP                                   295 28 25.8
 HV5798:UTM  18      -  PHILIP                                   296 43 45.4
 HV5798
 HV5798_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0118504298(NAD 83)
 HV5798
 HV5798|---------------------------------------------------------------------|
 HV5798| PID    Reference Object                     Distance      Geod. Az  |
 HV5798|                                                           dddmmss.s |
 HV5798| HV5782 MORN                                185.023 METERS 08931     |
 HV5798| HV5797 CHEW                                360.794 METERS 14244     |
 HV5798| HV5785 WHALE                               235.872 METERS 18355     |
 HV5798| HV5773 PHILIP                              498.888 METERS 2960050.7 |
 HV5798|---------------------------------------------------------------------|
 HV5798
 HV5798                          SUPERSEDED SURVEY CONTROL
 HV5798
 HV5798  NAD 83(1986)-  38 52 55.19051(N)    076 08 21.31268(W) AD(       ) 3
 HV5798  NAD 27      -  38 52 54.74700(N)    076 08 22.49700(W) AD(       ) 3
 HV5798  USSD        -  38 52 55.14200(N)    076 08 22.26500(W) AD(       ) 3
 HV5798
 HV5798.Superseded values are not recommended for survey control.
 HV5798
 HV5798.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5798.See file dsdata.pdf to determine how the superseded data were derived.
 HV5798
 HV5798_MARKER: Z = SEE DESCRIPTION
 HV5798_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5798_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5798+STABILITY: SURFACE MOTION
 HV5798
 HV5798  HISTORY     - Date     Condition        Report By
 HV5798  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5798  HISTORY     - 1940     GOOD             CGS
 HV5798  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5798
 HV5798                          STATION DESCRIPTION
 HV5798
 HV5798'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5798'STATION IS ON WYE ISLAND, ON THE NORTHERN SHORE OF THE BRANCH OF
 HV5798'WYE RIVER BOUNDING WYE ISLAND ON THE S, ON POINT AT EASTERN SIDE
 HV5798'OF ENTRANCE TO GRANARY CREEK, AMONG WATER BUSHES, ON MARSHLAND,
 HV5798'ABOUT 1 FOOT ABOVE HIGH WATER, 10 YARDS NE OF SHORE, 11 YARDS W OF
 HV5798'SHORE, 12 YARDS N BY W OF EXTREME END OF POINT, AND 50 YARDS FROM
 HV5798'TREES.  STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV5798'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV5798'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV5798'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV5798'SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH
 HV5798'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND
 HV5798'BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LEFT END
 HV5798'OF BARN, 1-1/2 MILES, S 85 DEG 39 MIN W.  LEFT TANGENT OF OLD
 HV5798'WHARF, 1/2 MILE, N 70 DEG 35 MIN W.  LARGE CHIMNEY OF BUILDING,
 HV5798'1-1/4 MILES, S 65 DEG 41 MIN E.  RIGHT TANGENT OF POINT, 1/4 MILE,
 HV5798'S 4 DEG 55 MIN E.
 HV5798
 HV5798                          STATION RECOVERY (1940)
 HV5798
 HV5798'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5798'STATION MARK FOUND IN GOOD CONDITION.
 HV5798'
 HV5798'ON WYE ISLAND, ON THE NORTHERN SHORE OF THE BRANCH OF WYE RIVER
 HV5798'BOUNDING WYE ISLAND ON THE S, ON POINT AT EASTERN SIDE OF
 HV5798'ENTRANCE TO GRANARY COVE, AT EDGE OF BUSHES 1 YARD W OF SHORE. 1/2
 HV5798'FOOT ABOVE HIGH WATER, AND 1-1/2 YARDS NW OF POINT.
 HV5798
 HV5798                          STATION RECOVERY (1961)
 HV5798
 HV5798'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5798'STATION NOT RECOVERED AFTER A SEARCH OF THE POINT.  IT WAS
 HV5798'REPORTED AS ONLY A YARD FROM M.H.W.I. IN 1940 AND HAS PROBABLY
 HV5798'BEEN DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN5996 ***********************************************************************
 DN5996  DESIGNATION -  GRAND
 DN5996  PID         -  DN5996
 DN5996  STATE/COUNTY-  MD/CARROLL
 DN5996  COUNTRY     -  US
 DN5996  USGS QUAD   -  TANEYTOWN (2016)
 DN5996
 DN5996                         *CURRENT SURVEY CONTROL
 DN5996  ______________________________________________________________________
 DN5996* NAD 83(1986) POSITION- 39 38 58.2    (N) 077 09 36.9    (W)   HD_HELD2
 DN5996* NAVD 88 ORTHO HEIGHT -   166.886 (meters)      547.53  (feet) ADJUSTED
 DN5996  ______________________________________________________________________
 DN5996  GEOID HEIGHT    -        -32.885 (meters)                     GEOID18
 DN5996  DYNAMIC HEIGHT  -        166.798 (meters)      547.24  (feet) COMP
 DN5996  MODELED GRAVITY -    980,092.2   (mgal)                       NAVD 88
 DN5996
 DN5996  VERT ORDER      -  SECOND    CLASS II
 DN5996
 DN5996.The horizontal coordinates were established by autonomous hand held GPS
 DN5996.observations and have an estimated accuracy of +/- 10 meters.
 DN5996
 DN5996.The orthometric height was determined by differential leveling and
 DN5996.adjusted by the NATIONAL GEODETIC SURVEY
 DN5996.in June 2012.
 DN5996
 DN5996.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN5996.GEOID18 height accuracy estimate available here.
 DN5996
 DN5996.Click photographs - Photos may exist for this station.
 DN5996
 DN5996.The dynamic height is computed by dividing the NAVD 88
 DN5996.geopotential number by the normal gravity value computed on the
 DN5996.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN5996.degrees latitude (g = 980.6199 gals.).
 DN5996
 DN5996.The modeled gravity was interpolated from observed gravity values.
 DN5996
 DN5996;                    North         East    Units  Estimated Accuracy
 DN5996;SPC MD       -   220,126.      386,245.      MT  (+/- 10 meters HH2 GPS)
 DN5996
 DN5996_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1465491086(NAD 83)
 DN5996
 DN5996                          SUPERSEDED SURVEY CONTROL
 DN5996
 DN5996.No superseded survey control is available for this station.
 DN5996
 DN5996_MARKER: DD = SURVEY DISK
 DN5996_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN5996_STAMPING: GRAND 1988
 DN5996_MARK LOGO: MD-013
 DN5996_PROJECTION: FLUSH
 DN5996_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN5996+STABILITY: SURFACE MOTION
 DN5996_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN5996+SATELLITE: SATELLITE OBSERVATIONS - May 10, 2014
 DN5996
 DN5996  HISTORY     - Date     Condition        Report By
 DN5996  HISTORY     - 1988     MONUMENTED       MD-013
 DN5996  HISTORY     - 20080125 GOOD             MDSHA
 DN5996  HISTORY     - 20140510 GOOD             RODCON
 DN5996
 DN5996                          STATION DESCRIPTION
 DN5996
 DN5996'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN5996'THE MARK IS LOCATED IN THE SOUTHEAST SECTION OF TANEYTOWN AT THE
 DN5996'TANEYTOWN BRANCH LIBRARY.
 DN5996'
 DN5996'TO REACH THE MARK FROM THE INTERSECTION OF MARYLAND ROUTE 140 AND
 DN5996'ROUTE 832 IN SOUTHEAST TANEYTOWN, GO NORTHWEST ON MARYLAND ROUTE 140
 DN5996'FOR 0.25 MI (0.4 KM) TO GRAND DRIVE ON THE LEFT.  TURN LEFT AND GO
 DN5996'SOUTHWEST ON GRAND DRIVE FOR 0.1 MI (0.2 KM) TO TANEYTOWN BRANCH
 DN5996'LIBRARY AND THE MARK ON THE RIGHT.
 DN5996'
 DN5996'IT IS 1.0 FT (0.3 M) SOUTHWEST OF A FIRE HYDRANT, 84.2 FT (25.7 M)
 DN5996'SOUTHEAST OF THE SOUTHEAST CORNER OF THE LIBRARY AND 27.0 FT (8.2 M)
 DN5996'NORTHWEST OF THE CENTERLINE OF GRAND DRIVE.
 DN5996
 DN5996                          STATION RECOVERY (2014)
 DN5996
 DN5996'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DN5996'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0121 ***********************************************************************
 HV0121  DESIGNATION -  GRANGE AZ MK
 HV0121  PID         -  HV0121
 HV0121  STATE/COUNTY-  MD/QUEEN ANNES
 HV0121  COUNTRY     -  US
 HV0121  USGS QUAD   -  WYE MILLS (2016)
 HV0121
 HV0121                         *CURRENT SURVEY CONTROL
 HV0121  ______________________________________________________________________
 HV0121* NAD 83(1986) POSITION- 38 57 12.     (N) 076 04 29.     (W)   SCALED
 HV0121* NAVD 88 ORTHO HEIGHT -    12.853 (meters)       42.17  (feet) ADJUSTED
 HV0121  ______________________________________________________________________
 HV0121  GEOID HEIGHT    -        -34.165 (meters)                     GEOID18
 HV0121  DYNAMIC HEIGHT  -         12.846 (meters)       42.15  (feet) COMP
 HV0121  MODELED GRAVITY -    980,067.3   (mgal)                       NAVD 88
 HV0121
 HV0121  VERT ORDER      -  FIRST     CLASS II
 HV0121
 HV0121.The horizontal coordinates were scaled from a map and have
 HV0121.an estimated accuracy of +/- 6 seconds.
 HV0121
 HV0121.The orthometric height was determined by differential leveling and
 HV0121.adjusted by the NATIONAL GEODETIC SURVEY
 HV0121.in June 1991.
 HV0121
 HV0121.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0121.GEOID18 height accuracy estimate available here.
 HV0121
 HV0121.Click photographs - Photos may exist for this station.
 HV0121
 HV0121.The dynamic height is computed by dividing the NAVD 88
 HV0121.geopotential number by the normal gravity value computed on the
 HV0121.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0121.degrees latitude (g = 980.6199 gals.).
 HV0121
 HV0121.The modeled gravity was interpolated from observed gravity values.
 HV0121
 HV0121;                    North         East    Units  Estimated Accuracy
 HV0121;SPC MD       -   143,230.      480,200.      MT  (+/- 180 meters Scaled)
 HV0121
 HV0121_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ068121(NAD 83)
 HV0121
 HV0121                          SUPERSEDED SURVEY CONTROL
 HV0121
 HV0121  NGVD 29 (11/26/84)   13.083  (m)           42.92   (f) ADJUSTED    1 2
 HV0121
 HV0121.Superseded values are not recommended for survey control.
 HV0121
 HV0121.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0121.See file dsdata.pdf to determine how the superseded data were derived.
 HV0121
 HV0121_MARKER: DD = SURVEY DISK
 HV0121_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0121_SP_SET: CATCH BASIN
 HV0121_STAMPING: GRANGE AZ 1960
 HV0121_MARK LOGO: MDBCSM
 HV0121_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0121
 HV0121  HISTORY     - Date     Condition        Report By
 HV0121  HISTORY     - 1960     MONUMENTED       MDBCSM
 HV0121  HISTORY     - 1971     GOOD             NGS
 HV0121  HISTORY     - 20010324 MARK NOT FOUND   USPSQD
 HV0121
 HV0121                          STATION DESCRIPTION
 HV0121
 HV0121'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0121'1.2 MI NE FROM WYE MILLS.
 HV0121'ABOUT 0.95 MILE NORTH ALONG STATE HIGHWAY 662 FROM THE POST
 HV0121'OFFICE AT WYE MILLS, THENCE 0.2 MILE SOUTHEAST ALONG U.S. HIGHWAY
 HV0121'50, 0.2 MILE SOUTHEAST OF THE JUNCTION OF U.S. HIGHWAY 213
 HV0121'LEADING NORTH, IN THE HIGHWAY MEDIAN, 27 FEET NORTHEAST OF THE
 HV0121'CENTER LINE OF THE EASTBOUND LANE OF THE HIGHWAY, 27 1/2 FEET
 HV0121'SOUTHWEST OF THE CENTER LINE OF THE WESTBOUND LANE OF THE HIGHWAY,
 HV0121'14.8 FEET NORTHWEST OF THE SOUTHEAST END OF THE CONCRETE SLAB,
 HV0121'11.3 FEET SOUTHEAST OF THE SOUTHEAST SIDE OF THE CATCH BASIN,
 HV0121'2 FEET BELOW THE LEVEL OF THE HIGHWAY SET IN THE CENTER AND AT THE
 HV0121'BOTTOM OF A 6 FOOT WIDE CONCRETE SLAB FOR A DRAINAGE TO A CATCH
 HV0121'BASIN.
 HV0121
 HV0121                          STATION RECOVERY (2001)
 HV0121
 HV0121'RECOVERY NOTE BY US POWER SQUADRON 2001 (KNP)
 HV0121'RT. 50 HAS BEEN SUBJECT TO WIDENING AND UPGRADING SINCE LAST RECOVERY.
 HV0121'CATCH BASIN AND CONCRETE PADS REBUILT. SITE MAY BE REACHED 1.3 MILES
 HV0121'NORTHWEST OF RT. 50 AND 404 INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4785 ***********************************************************************
 AB4785  DESIGNATION -  GRANGER
 AB4785  PID         -  AB4785
 AB4785  STATE/COUNTY-  MD/CARROLL
 AB4785  COUNTRY     -  US
 AB4785  USGS QUAD   -  LITTLESTOWN (2019)
 AB4785
 AB4785                         *CURRENT SURVEY CONTROL
 AB4785  ______________________________________________________________________
 AB4785* NAD 83(2011) POSITION- 39 37 58.11733(N) 077 00 10.94952(W)   ADJUSTED
 AB4785* NAD 83(2011) ELLIP HT-   210.698 (meters)        (06/27/12)   ADJUSTED
 AB4785* NAD 83(2011) EPOCH   -  2010.00
 AB4785* NAVD 88 ORTHO HEIGHT -   243.1   (meters)      798.    (feet) GPS OBS
 AB4785  ______________________________________________________________________
 AB4785  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4785  GEOID HEIGHT    -        -32.450 (meters)                     GEOID99
 AB4785  GEOID HEIGHT    -        -32.438 (meters)                     GEOID18
 AB4785  NAD 83(2011) X  -  1,106,274.344 (meters)                     COMP
 AB4785  NAD 83(2011) Y  - -4,792,961.430 (meters)                     COMP
 AB4785  NAD 83(2011) Z  -  4,046,804.984 (meters)                     COMP
 AB4785  LAPLACE CORR    -          4.18  (seconds)                    DEFLEC18
 AB4785
 AB4785  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4785  Standards:
 AB4785         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4785            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4785  -------------------------------------------------------------------
 AB4785  NETWORK    1.15   2.96           0.55   0.34   1.51     -0.12964433
 AB4785  -------------------------------------------------------------------
 AB4785  Click here for local accuracies and other accuracy information.
 AB4785
 AB4785.The horizontal coordinates were established by GPS observations
 AB4785.and adjusted by the National Geodetic Survey in June 2012.
 AB4785
 AB4785.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4785.been affixed to the stable North American tectonic plate. See 
 AB4785.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4785
 AB4785.The horizontal coordinates are valid at the epoch date displayed above
 AB4785.which is a decimal equivalence of Year/Month/Day.
 AB4785
 AB4785.The orthometric height was determined by GPS observations and a
 AB4785.high-resolution geoid model.
 AB4785
 AB4785.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4785.GEOID18 height accuracy estimate available here.
 AB4785
 AB4785.Click photographs - Photos may exist for this station.
 AB4785
 AB4785.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4785
 AB4785.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4785
 AB4785.The ellipsoidal height was determined by GPS observations
 AB4785.and is referenced to NAD 83.
 AB4785
 AB4785. The following values were computed from the NAD 83(2011) position.
 AB4785
 AB4785;                    North         East     Units Scale Factor Converg.
 AB4785;SPC MD       -   218,260.695   399,738.876   MT  1.00003710   -0 00 06.9
 AB4785;SPC MD       -   716,076.96  1,311,476.63   sFT  1.00003710   -0 00 06.9
 AB4785;UTM  18      - 4,388,921.109   328,102.090   MT  0.99996381   -1 16 40.7
 AB4785
 AB4785!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4785!SPC MD       -   0.99996695  x   1.00003710  =   1.00000404
 AB4785!UTM  18      -   0.99996695  x   0.99996381  =   0.99993076
 AB4785
 AB4785:                Primary Azimuth Mark                     Grid Az
 AB4785:SPC MD       -  GRANGER AZ MK                            118 42 35.7
 AB4785:UTM  18      -  GRANGER AZ MK                            119 59 09.5
 AB4785
 AB4785_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2810288921(NAD 83)
 AB4785
 AB4785|---------------------------------------------------------------------|
 AB4785| PID    Reference Object                     Distance      Geod. Az  |
 AB4785|                                                           dddmmss.s |
 AB4785| AB4768 GRANGER AZ MK                       APPROX. 0.9 KM 1184228.8 |
 AB4785|---------------------------------------------------------------------|
 AB4785
 AB4785                          SUPERSEDED SURVEY CONTROL
 AB4785
 AB4785  NAD 83(2007)-  39 37 58.11758(N)    077 00 10.95029(W) AD(2002.00) 0
 AB4785  ELLIP H (02/10/07)  210.718  (m)                       GP(2002.00)    
 AB4785  ELLIP H (08/30/02)  210.724  (m)                       GP(       ) 4 2
 AB4785  NAD 83(1991)-  39 37 58.11703(N)    077 00 10.95098(W) AD(       ) 1
 AB4785  ELLIP H (07/03/96)  210.657  (m)                       GP(       ) 1 1
 AB4785  NAVD 88 (07/03/96)  243.1    (m)  GEOID93  model used  GPS OBS        
 AB4785
 AB4785.Superseded values are not recommended for survey control.
 AB4785
 AB4785.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4785.See file dsdata.pdf to determine how the superseded data were derived.
 AB4785
 AB4785_MARKER: DD = SURVEY DISK
 AB4785_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4785_STAMPING: GRANGER 1995
 AB4785_MARK LOGO: MD-013
 AB4785_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4785_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4785+STABILITY: SURFACE MOTION
 AB4785_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4785+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4785
 AB4785  HISTORY     - Date     Condition        Report By
 AB4785  HISTORY     - 1995     MONUMENTED       MD-013
 AB4785
 AB4785                          STATION DESCRIPTION
 AB4785
 AB4785'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4785'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) NORTH OF WESTMINSTER. TO
 AB4785'REACH STATION FROM THE INTERSECTION OF MD ROUTE 97 (LITTLESTOWN PIKE)
 AB4785'AND MD ROUTE 496 (BACHMAN VALLEY ROAD), GO NORTH ON MD ROUTE 97 FOR
 AB4785'0.65 MI (1.05 KM) TO THE STATION ON THE LEFT. STATION MARK IS SET IN
 AB4785'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4785'GROUND. IT IS 43.4 FT (13.2 M) SOUTHWEST OF THE CENTERLINE OF THE
 AB4785'ROAD, 61.8 FT (18.8 M) SOUTHEAST OF POWER POLE NO.150930, 65.0 FT
 AB4785'(19.8 M) SOUTHEAST OF A WELL, 55.4 FT (16.9 M) NORTHEAST OF THE
 AB4785'NORTHEAST CORNER OF HOUSE NO.2100 AND 54.1 FT (16.5 M) NORTHWEST OF
 AB4785'POWER POLE NO.150929.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4768 ***********************************************************************
 AB4768  DESIGNATION -  GRANGER AZ MK
 AB4768  PID         -  AB4768
 AB4768  STATE/COUNTY-  MD/CARROLL
 AB4768  COUNTRY     -  US
 AB4768  USGS QUAD   -  MANCHESTER (2016)
 AB4768
 AB4768                         *CURRENT SURVEY CONTROL
 AB4768  ______________________________________________________________________
 AB4768* NAD 83(2011) POSITION- 39 37 44.42379(N) 076 59 38.61771(W)   ADJUSTED
 AB4768* NAD 83(2011) ELLIP HT-   182.923 (meters)        (06/27/12)   ADJUSTED
 AB4768* NAD 83(2011) EPOCH   -  2010.00
 AB4768* NAVD 88 ORTHO HEIGHT -   215.3   (meters)      706.    (feet) GPS OBS
 AB4768  ______________________________________________________________________
 AB4768  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4768  GEOID HEIGHT    -        -32.418 (meters)                     GEOID99
 AB4768  GEOID HEIGHT    -        -32.406 (meters)                     GEOID18
 AB4768  NAD 83(2011) X  -  1,107,081.434 (meters)                     COMP
 AB4768  NAD 83(2011) Y  - -4,793,029.593 (meters)                     COMP
 AB4768  NAD 83(2011) Z  -  4,046,461.998 (meters)                     COMP
 AB4768  LAPLACE CORR    -          4.02  (seconds)                    DEFLEC18
 AB4768
 AB4768  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4768  Standards:
 AB4768         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4768            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4768  -------------------------------------------------------------------
 AB4768  NETWORK    0.97   3.39           0.45   0.32   1.73     -0.10749091
 AB4768  -------------------------------------------------------------------
 AB4768  Click here for local accuracies and other accuracy information.
 AB4768
 AB4768.The horizontal coordinates were established by GPS observations
 AB4768.and adjusted by the National Geodetic Survey in June 2012.
 AB4768
 AB4768.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4768.been affixed to the stable North American tectonic plate. See 
 AB4768.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4768
 AB4768.The horizontal coordinates are valid at the epoch date displayed above
 AB4768.which is a decimal equivalence of Year/Month/Day.
 AB4768
 AB4768.The orthometric height was determined by GPS observations and a
 AB4768.high-resolution geoid model.
 AB4768
 AB4768.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4768.GEOID18 height accuracy estimate available here.
 AB4768
 AB4768.Click photographs - Photos may exist for this station.
 AB4768
 AB4768.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4768
 AB4768.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4768
 AB4768.The ellipsoidal height was determined by GPS observations
 AB4768.and is referenced to NAD 83.
 AB4768
 AB4768. The following values were computed from the NAD 83(2011) position.
 AB4768
 AB4768;                    North         East     Units Scale Factor Converg.
 AB4768;SPC MD       -   217,838.369   400,509.952   MT  1.00003622   +0 00 13.4
 AB4768;SPC MD       -   714,691.38  1,314,006.40   sFT  1.00003622   +0 00 13.4
 AB4768;UTM  18      - 4,388,481.750   328,863.513   MT  0.99996059   -1 16 19.7
 AB4768
 AB4768!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4768!SPC MD       -   0.99997130  x   1.00003622  =   1.00000752
 AB4768!UTM  18      -   0.99997130  x   0.99996059  =   0.99993189
 AB4768
 AB4768:                Primary Azimuth Mark                     Grid Az
 AB4768:SPC MD       -  GRANGER                                  298 42 36.0
 AB4768:UTM  18      -  GRANGER                                  299 59 09.1
 AB4768
 AB4768_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2886388481(NAD 83)
 AB4768
 AB4768|---------------------------------------------------------------------|
 AB4768| PID    Reference Object                     Distance      Geod. Az  |
 AB4768|                                                           dddmmss.s |
 AB4768| AB4785 GRANGER                             APPROX. 0.9 KM 2984249.4 |
 AB4768|---------------------------------------------------------------------|
 AB4768
 AB4768                          SUPERSEDED SURVEY CONTROL
 AB4768
 AB4768  NAD 83(2007)-  39 37 44.42404(N)    076 59 38.61849(W) AD(2002.00) 0
 AB4768  ELLIP H (02/10/07)  182.943  (m)                       GP(2002.00)    
 AB4768  ELLIP H (08/30/02)  182.950  (m)                       GP(       ) 4 2
 AB4768  NAD 83(1991)-  39 37 44.42347(N)    076 59 38.61920(W) AD(       ) 1
 AB4768  ELLIP H (07/03/96)  182.881  (m)                       GP(       ) 1 1
 AB4768  NAVD 88 (07/03/96)  215.3    (m)  GEOID93  model used  GPS OBS        
 AB4768
 AB4768.Superseded values are not recommended for survey control.
 AB4768
 AB4768.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4768.See file dsdata.pdf to determine how the superseded data were derived.
 AB4768
 AB4768_MARKER: DD = SURVEY DISK
 AB4768_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4768_STAMPING: GRANGER AZI 1995
 AB4768_MARK LOGO: MD-013
 AB4768_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4768_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4768+STABILITY: SURFACE MOTION
 AB4768_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4768+SATELLITE: SATELLITE OBSERVATIONS - August 02, 2015
 AB4768
 AB4768  HISTORY     - Date     Condition        Report By
 AB4768  HISTORY     - 1995     MONUMENTED       MD-013
 AB4768  HISTORY     - 20150802 GOOD             USPSQD
 AB4768
 AB4768                          STATION DESCRIPTION
 AB4768
 AB4768'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4768'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) NORTH OF THE CENTER OF
 AB4768'WESTMINSTER AND ABOUT 6.0 MI (9.7 KM) SOUTHWEST OF MANCHESTER. TO
 AB4768'REACH STATION FROM THE INTERSECTION OF MD ROUTE 97 (LITTLESTOWN PIKE)
 AB4768'AND MD ROUTE 496 (BACHMAN VALLEY ROAD) NORTH OF WESTMINSTER, GO
 AB4768'NORTHEAST ON MD ROUTE 496 FOR 0.3 MI (0.5 KM) TO THE STATION ON THE
 AB4768'RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4768'MONUMENT SET FLUSH WITH THE GROUND. IT IS 23.0 FT (7.0 M) SOUTHEAST OF
 AB4768'THE CENTERLINE OF THE ROAD, 37.2 FT (11.3 M) NORTHWEST OF POWER POLE
 AB4768'NO.211863, 29.8 FT (9.1 M) SOUTHWEST OF THE CENTERLINE OF A STONE
 AB4768'DRIVE LEADING SOUTHEAST AND 89.0 FT (27.1 M) SOUTHWEST OF THE
 AB4768'CENTERLINE OF A PAVED DRIVE LEADING SOUTHEAST TO HOUSE NO.111.
 AB4768
 AB4768                          STATION RECOVERY (2015)
 AB4768
 AB4768'RECOVERY NOTE BY US POWER SQUADRON 2015
 AB4768'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6227 ***********************************************************************
 DN6227  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6227  DESIGNATION -  GRANITE
 DN6227  PID         -  DN6227
 DN6227  STATE/COUNTY-  MD/CECIL
 DN6227  COUNTRY     -  US
 DN6227  USGS QUAD   -  CONOWINGO DAM (2016)
 DN6227
 DN6227                         *CURRENT SURVEY CONTROL
 DN6227  ______________________________________________________________________
 DN6227* NAD 83(2011) POSITION- 39 37 34.38309(N) 076 07 40.39581(W)   ADJUSTED
 DN6227* NAD 83(2011) ELLIP HT-    40.221 (meters)        (06/27/12)   ADJUSTED
 DN6227* NAD 83(2011) EPOCH   -  2010.00
 DN6227* NAVD 88 ORTHO HEIGHT -    73.20  (meters)      240.2   (feet) GPS OBS
 DN6227  ______________________________________________________________________
 DN6227  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6227  GEOID HEIGHT    -        -32.952 (meters)                     GEOID03
 DN6227  GEOID HEIGHT    -        -32.980 (meters)                     GEOID18
 DN6227  NAD 83(2011) X  -  1,179,432.114 (meters)                     COMP
 DN6227  NAD 83(2011) Y  - -4,775,831.204 (meters)                     COMP
 DN6227  NAD 83(2011) Z  -  4,046,132.474 (meters)                     COMP
 DN6227  LAPLACE CORR    -         -1.17  (seconds)                    DEFLEC18
 DN6227
 DN6227  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6227  Standards:
 DN6227         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6227            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6227  -------------------------------------------------------------------
 DN6227  NETWORK    0.68   1.49           0.31   0.24   0.76      0.03429257
 DN6227  -------------------------------------------------------------------
 DN6227  Click here for local accuracies and other accuracy information.
 DN6227
 DN6227.The horizontal coordinates were established by GPS observations
 DN6227.and adjusted by the National Geodetic Survey in June 2012.
 DN6227
 DN6227.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6227.been affixed to the stable North American tectonic plate. See 
 DN6227.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6227
 DN6227.The horizontal coordinates are valid at the epoch date displayed above
 DN6227.which is a decimal equivalence of Year/Month/Day.
 DN6227
 DN6227.The orthometric height was determined by GPS observations and a
 DN6227.high-resolution geoid model using precise GPS observation and
 DN6227.processing techniques.
 DN6227
 DN6227.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6227.GEOID18 height accuracy estimate available here.
 DN6227
 DN6227.Click photographs - Photos may exist for this station.
 DN6227
 DN6227.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6227
 DN6227.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6227
 DN6227.The ellipsoidal height was determined by GPS observations
 DN6227.and is referenced to NAD 83.
 DN6227
 DN6227. The following values were computed from the NAD 83(2011) position.
 DN6227
 DN6227;                    North         East     Units Scale Factor Converg.
 DN6227;SPC MD       -   217,886.352   474,879.026   MT  1.00003558   +0 32 50.5
 DN6227;SPC MD       -   714,848.81  1,557,998.94   sFT  1.00003558   +0 32 50.5
 DN6227;UTM  18      - 4,386,880.060   403,199.778   MT  0.99971536   -0 43 09.8
 DN6227
 DN6227!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6227!SPC MD       -   0.99999369  x   1.00003558  =   1.00002927
 DN6227!UTM  18      -   0.99999369  x   0.99971536  =   0.99970905
 DN6227
 DN6227_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0319986880(NAD 83)
 DN6227
 DN6227                          SUPERSEDED SURVEY CONTROL
 DN6227
 DN6227  NAD 83(2007)-  39 37 34.38311(N)    076 07 40.39671(W) AD(2002.00) 1
 DN6227  ELLIP H (02/23/12)   40.251  (m)                       GP(2002.00) 4 1
 DN6227
 DN6227.Superseded values are not recommended for survey control.
 DN6227
 DN6227.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6227.See file dsdata.pdf to determine how the superseded data were derived.
 DN6227
 DN6227_MARKER: DD = SURVEY DISK
 DN6227_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6227_STAMPING: GRANITE 2008
 DN6227_MARK LOGO: MD-015
 DN6227_PROJECTION: RECESSED 9 CENTIMETERS
 DN6227_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6227_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6227+STABILITY: SURFACE MOTION
 DN6227_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6227+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6227
 DN6227  HISTORY     - Date     Condition        Report By
 DN6227  HISTORY     - 20081204 MONUMENTED       GWS
 DN6227  HISTORY     - 20251007 GOOD             PROFLN
 DN6227
 DN6227                          STATION DESCRIPTION
 DN6227
 DN6227'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6227'THE STATION IS LOCATED APPROXIMATELY 2.8 MI (4.5 KM) SOUTHWEST OF
 DN6227'WOODLAWN, 2.1 MI (3.4 KM) SOUTHWEST OF LIBERTY GROVE AND 1.6 MI (2.6
 DN6227'KM) NORTHWEST OF PORT DEPOSIT.
 DN6227'
 DN6227'TO REACH FROM THE JUNCTION OF MD 276 AND MD 222, GO NORTHWEST ON MD
 DN6227'222 FOR 0.82 MI (1.3 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND
 DN6227'GO EAST-NORTHEAST ON GRANITE AVENUE FOR 0.11 MI (0.2 KM) TO A FORK.
 DN6227'BEAR LEFT AND GO NORTH ON RACE ST/LIBERTY GROVE ROAD FOR 0.95 MI (1.5
 DN6227'KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO EAST ON ROWLAND
 DN6227'ROAD FOR 0.08 MI (0.1 KM) TO THE INTERSECTION OF GRANITE DRIVE AND THE
 DN6227'STATION ON THE RIGHT IN THE SOUTHWEST ANGLE.
 DN6227'
 DN6227'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6227'CONCRETE MONUMENT ON LOT 2 GRANITE DRIVE, 44 FT (13.4 M) SOUTH OF A
 DN6227'UTILITY POLE (CONECTIV 32267/39203), 22 FT (6.7 M) WEST OF THE
 DN6227'CENTERLINE OF GRANITE DRIVE AND 65 FT (19.8 M) NORTHWEST OF A SPEED
 DN6227'LIMIT SIGN.
 DN6227
 DN6227                          STATION RECOVERY (2025)
 DN6227
 DN6227'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6227'THE MARK IS 59.5 FT (18.1 M) NORTH OF THE WEST END OF A 24 INCH (61
 DN6227'CM) CORRUGATED METAL PIPE CROSSING GRANITE DR, 25 FT (7.6 M) SOUTH OF
 DN6227'ROWLAND ROAD, 6.5 FT (2.0 M) SOUTHWEST RADIAL TO THE CURVE FROM THE
 DN6227'SOUTHWEST EDGE OF ASPHALT PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6575 ***********************************************************************
 JV6575  DESIGNATION -  GRANT AZ MK 2
 JV6575  PID         -  JV6575
 JV6575  STATE/COUNTY-  MD/QUEEN ANNES
 JV6575  COUNTRY     -  US
 JV6575  USGS QUAD   -  CENTREVILLE (2017)
 JV6575
 JV6575                         *CURRENT SURVEY CONTROL
 JV6575  ______________________________________________________________________
 JV6575* NAD 83(1991) POSITION- 39 03 14.99181(N) 076 04 53.09574(W)   ADJUSTED
 JV6575* NAVD 88 ORTHO HEIGHT -    13.    (meters)       43.    (feet) SCALED
 JV6575  ______________________________________________________________________
 JV6575  GEOID HEIGHT    -        -33.751 (meters)                     GEOID18
 JV6575  LAPLACE CORR    -         -3.81  (seconds)                    DEFLEC18
 JV6575  HORZ ORDER      -  THIRD
 JV6575
 JV6575.The horizontal coordinates were established by classical geodetic methods
 JV6575.and adjusted by the National Geodetic Survey in January 1992.
 JV6575
 JV6575.The orthometric height was scaled from a topographic map.
 JV6575
 JV6575.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6575.GEOID18 height accuracy estimate available here.
 JV6575
 JV6575.Click photographs - Photos may exist for this station.
 JV6575
 JV6575.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6575
 JV6575. The following values were computed from the NAD 83(1991) position.
 JV6575
 JV6575;                    North         East     Units Scale Factor Converg.
 JV6575;SPC MD       -   154,419.067   479,508.023   MT  0.99995468   +0 34 35.5
 JV6575;SPC MD       -   506,623.22  1,573,185.91   sFT  0.99995468   +0 34 35.5
 JV6575;UTM  18      - 4,323,343.696   406,428.616   MT  0.99970781   -0 40 53.0
 JV6575
 JV6575!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6575!SPC MD       -   1.00000326  x   0.99995468  =   0.99995794
 JV6575!UTM  18      -   1.00000326  x   0.99970781  =   0.99971107
 JV6575
 JV6575_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0642823343(NAD 83)
 JV6575
 JV6575|---------------------------------------------------------------------|
 JV6575| PID    Reference Object                     Distance      Geod. Az  |
 JV6575|                                                           dddmmss.s |
 JV6575| JV6597 GRANT RM 1                                         02558     |
 JV6575| JV6574 GRANT RESET                         299.919 METERS 03233     |
 JV6575|---------------------------------------------------------------------|
 JV6575
 JV6575                          SUPERSEDED SURVEY CONTROL
 JV6575
 JV6575  NAD 83(1986)-  39 03 14.98502(N)    076 04 53.10487(W) AD(       ) 3
 JV6575
 JV6575.Superseded values are not recommended for survey control.
 JV6575
 JV6575.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6575.See file dsdata.pdf to determine how the superseded data were derived.
 JV6575
 JV6575_MARKER: DZ = AZIMUTH MARK DISK
 JV6575_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV6575_SP_SET: HEADWALL
 JV6575_STAMPING: GRANT 1934 AZ 2 1980
 JV6575_MARK LOGO: NGS
 JV6575_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6575_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6575_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6575+SATELLITE: SATELLITE OBSERVATIONS - March 18, 2006
 JV6575
 JV6575  HISTORY     - Date     Condition        Report By
 JV6575  HISTORY     - 1980     MONUMENTED       NGS
 JV6575  HISTORY     - 20020224 GOOD             USPSQD
 JV6575  HISTORY     - 20060318 GOOD             USPSQD
 JV6575
 JV6575                          STATION DESCRIPTION
 JV6575
 JV6575'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 JV6575'THE STATION IS LOCATED ABOUT 56.3 KM (35.00 MI) SOUTHEAST OF
 JV6575'BALTIMORE, 9.65 KM (6.00 MI) NORTHEAST OF QUEENSTOWN AND 1.6 KM
 JV6575'(1.00 MI) NORTHWEST OF CENTERVILLE.  OWNERSHIP--ROAD RIGHT-OF WAY.
 JV6575'TO REACH FROM THE POST OFFICE IN CENTERVILLE, GO WEST ON WATER STREET
 JV6575'FOR 0.1 KM (0.05 MI) TO A CROSSROADS. TURN RIGHT AND GO NORTH ON
 JV6575'COMMERCE STREET FOR 0.1 KM (0.05 MI) TO ANOTHER CROSSROADS.  TURN LEFT
 JV6575'AND GO WEST ON STATE HIGHWAY 304 FOR 1.77 KM (1.10 MI) TO A FARM ROAD
 JV6575'ON THE RIGHT.  CONTINUE WEST ON STATE HIGHWAY 304 FOR 0.1 KM
 JV6575'(0.05 MI) TO A FARM ROAD ON THE LEFT AND THE MARK ON THE LEFT IN THE
 JV6575'SOUTHEAST ANGLE OF THE INTERSECTION.
 JV6575'THE MARK IS SET IN A DRILL HOLE IN THE CENTER OF THE 1.2 M (3.9 FT)
 JV6575'HEADWALL WHICH PROJECTS ABOUT 0.35 M (1.1 FT).  IT IS 12.2 M
 JV6575'(40.0 FT) EAST OF THE CENTER OF THE PAVED FARM ROAD LEADING SOUTH, 4.6
 JV6575'M (15.1 FT) SOUTH OF THE CENTER OF STATE HIGHWAY 304, 2.3 M (7.5 FT)
 JV6575'NORTHEAST OF A POWERLINE POLE NUMBERED 66 AND 1.1 M (3.6 FT) EAST OF A
 JV6575'WITNESS POST.
 JV6575
 JV6575                          STATION RECOVERY (2002)
 JV6575
 JV6575'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV6575'POWER LINE POLE NO.66 REMOVED.  MARK IS NOW 5 FEET N OF POWER LINE
 JV6575'POLE 33336-18340.
 JV6575
 JV6575                          STATION RECOVERY (2006)
 JV6575
 JV6575'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JV6575'WITNESS POST DOES NOT EXIST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6574 ***********************************************************************
 JV6574  DESIGNATION -  GRANT RESET
 JV6574  PID         -  JV6574
 JV6574  STATE/COUNTY-  MD/QUEEN ANNES
 JV6574  COUNTRY     -  US
 JV6574  USGS QUAD   -  CENTREVILLE (2017)
 JV6574
 JV6574                         *CURRENT SURVEY CONTROL
 JV6574  ______________________________________________________________________
 JV6574* NAD 83(1991) POSITION- 39 03 23.19007(N) 076 04 46.38505(W)   ADJUSTED
 JV6574* NAVD 88 ORTHO HEIGHT -    14.    (meters)       46.    (feet) SCALED
 JV6574  ______________________________________________________________________
 JV6574  GEOID HEIGHT    -        -33.747 (meters)                     GEOID18
 JV6574  LAPLACE CORR    -         -3.75  (seconds)                    DEFLEC18
 JV6574  HORZ ORDER      -  THIRD
 JV6574
 JV6574.The horizontal coordinates were established by classical geodetic methods
 JV6574.and adjusted by the National Geodetic Survey in January 1992.
 JV6574
 JV6574.The orthometric height was scaled from a topographic map.
 JV6574
 JV6574.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6574.GEOID18 height accuracy estimate available here.
 JV6574
 JV6574.Click photographs - Photos may exist for this station.
 JV6574
 JV6574.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6574
 JV6574. The following values were computed from the NAD 83(1991) position.
 JV6574
 JV6574;                    North         East     Units Scale Factor Converg.
 JV6574;SPC MD       -   154,673.485   479,666.814   MT  0.99995480   +0 34 39.7
 JV6574;SPC MD       -   507,457.93  1,573,706.87   sFT  0.99995480   +0 34 39.7
 JV6574;UTM  18      - 4,323,594.504   406,592.913   MT  0.99970743   -0 40 48.9
 JV6574
 JV6574!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6574!SPC MD       -   1.00000314  x   0.99995480  =   0.99995794
 JV6574!UTM  18      -   1.00000314  x   0.99970743  =   0.99971056
 JV6574
 JV6574:                Primary Azimuth Mark                     Grid Az
 JV6574:SPC MD       -  GRANT RM 3                               196 32 25.3
 JV6574:UTM  18      -  GRANT RM 3                               197 47 53.9
 JV6574
 JV6574_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0659223594(NAD 83)
 JV6574
 JV6574|---------------------------------------------------------------------|
 JV6574| PID    Reference Object                     Distance      Geod. Az  |
 JV6574|                                                           dddmmss.s |
 JV6574| JV5011 CENTERVILLE STANDPIPE WEA VANE      APPROX. 1.7 KM 1353015.8 |
 JV6574| JV6598 GRANT RM 3                                         1970705.0 |
 JV6574| JV6575 GRANT AZ MK 2                       299.919 METERS 21233     |
 JV6574| JV6597 GRANT RM 1                           55.897 METERS 24359     |
 JV6574| CA9462 GRANT RM 2                           72.994 METERS 33044     |
 JV6574|---------------------------------------------------------------------|
 JV6574
 JV6574                          SUPERSEDED SURVEY CONTROL
 JV6574
 JV6574  NAD 83(1986)-  39 03 23.18320(N)    076 04 46.39404(W) AD(       ) 3
 JV6574  NAD 27      -  39 03 22.78500(N)    076 04 47.60000(W) AD(       ) 2
 JV6574
 JV6574.Superseded values are not recommended for survey control.
 JV6574
 JV6574.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6574.See file dsdata.pdf to determine how the superseded data were derived.
 JV6574
 JV6574_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6574_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6574_STAMPING: GRANT 1934 1980
 JV6574_MARK LOGO: NGS
 JV6574_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6574_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6574+STABILITY: SURFACE MOTION
 JV6574
 JV6574  HISTORY     - Date     Condition        Report By
 JV6574  HISTORY     - 1980     MONUMENTED       NGS
 JV6574  HISTORY     - 20020224 MARK NOT FOUND   USPSQD
 JV6574
 JV6574                          STATION DESCRIPTION
 JV6574
 JV6574'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 JV6574'THE STATION IS LOCATED ABOUT 56.3 KM (35.00 MI) SOUTHEAST OF
 JV6574'BALTIMORE, 9.65 KM (6.00 MI) NORTHEAST OF QUEENSTOWN AND 1.6 KM
 JV6574'(1.00 MI) NORTHWEST OF CENTERVILLE.  OWNERSHIP--MR. HARRY DUFFY III,
 JV6574'SILT FARMS, CENTERVILLE, MARYLAND 21607.
 JV6574'TO REACH FROM THE POST OFFICE IN CENTERVILLE, GO WEST ON WATER STREET
 JV6574'FOR 0.1 KM (0.05 MI) TO A CROSSROADS. TURN RIGHT AND GO NORTH ON
 JV6574'COMMERCE STREET FOR 0.1 KM (0.05 MI) TO ANOTHER CROSSROADS.  TURN LEFT
 JV6574'AND GO WEST ON STATE HIGHWAY 304 FOR 1.77 KM (1.10 MI) TO A FARM ROAD
 JV6574'ON THE RIGHT.  TURN RIGHT AND GO NORTH ON THE FARM ROAD FOR 0.32 KM
 JV6574'(0.20 MI) TO THE STATION MARK ON THE RIGHT ATOP A SMALL RISE.
 JV6574'THE STATION DISK IS SET IN THE TOP OF A 0.61 M (2.0 FT) CONCRETE POST
 JV6574'WHICH IS RECESSED 0.31 M (1.0 FT) BELOW THE SURFACE OF THE GROUND.  IT
 JV6574'IS 76.2 M (250.0 FT) SOUTHEAST OF THE APPROXIMATE CENTER OF A
 JV6574'T-INTERSECTION IN THE FARM ROAD, 72.85 M (239.0 FT) SOUTHEAST OF A
 JV6574'WITNESS POST WHICH IS NEAR THE REFERENCE MARK THREE, 66.75 M
 JV6574'(219.0 FT) NORTHEAST OF THE NORTH ONE OF THREE CEDAR TREES, 48.77 M
 JV6574'(160.0 FT) EAST OF THE CENTER OF THE FARM ROAD AND 0.6 M (2.0 FT)
 JV6574'SOUTH OF A WITNESS POST.
 JV6574
 JV6574                          STATION RECOVERY (2002)
 JV6574
 JV6574'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV6574'REFERENCED N CEDAR TREE DOES NOT EXIST.  WITNESS POST DOES NOT EXIST.
 JV6574'FIELD HEAVILY CULTIVATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6590 ***********************************************************************
 HV6590  DESIGNATION -  GRASON 1908
 HV6590  PID         -  HV6590
 HV6590  STATE/COUNTY-  MD/ST MARYS
 HV6590  COUNTRY     -  US
 HV6590  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6590
 HV6590                         *CURRENT SURVEY CONTROL
 HV6590  ______________________________________________________________________
 HV6590* NAD 83(1993) POSITION- 38 09 41.89848(N) 076 25 31.93537(W)   ADJUSTED
 HV6590* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6590  ______________________________________________________________________
 HV6590  GEOID HEIGHT    -        -34.823 (meters)                     GEOID18
 HV6590  LAPLACE CORR    -         -5.99  (seconds)                    DEFLEC18
 HV6590  HORZ ORDER      -  THIRD
 HV6590
 HV6590.The horizontal coordinates were established by classical geodetic methods
 HV6590.and adjusted by the National Geodetic Survey in November 1994.
 HV6590
 HV6590.The orthometric height was scaled from a topographic map.
 HV6590
 HV6590.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6590.GEOID18 height accuracy estimate available here.
 HV6590
 HV6590.Click photographs - Photos may exist for this station.
 HV6590
 HV6590.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6590
 HV6590. The following values were computed from the NAD 83(1993) position.
 HV6590
 HV6590;                    North         East     Units Scale Factor Converg.
 HV6590;SPC MD       -    55,102.819   450,346.522   MT  1.00002695   +0 21 38.0
 HV6590;SPC MD       -   180,783.17  1,477,511.88   sFT  1.00002695   +0 21 38.0
 HV6590;UTM  18      - 4,224,709.447   375,113.740   MT  0.99979208   -0 52 51.3
 HV6590
 HV6590!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6590!SPC MD       -   1.00000535  x   1.00002695  =   1.00003230
 HV6590!UTM  18      -   1.00000535  x   0.99979208  =   0.99979743
 HV6590
 HV6590:                Primary Azimuth Mark                     Grid Az
 HV6590:SPC MD       -  CHURCH 1908                              214 22 51.5
 HV6590:UTM  18      -  CHURCH 1908                              215 37 20.8
 HV6590
 HV6590_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7511324709(NAD 83)
 HV6590
 HV6590|---------------------------------------------------------------------|
 HV6590| PID    Reference Object                     Distance      Geod. Az  |
 HV6590|                                                           dddmmss.s |
 HV6590| HV6592 SMOKE                               367.593 METERS 07110     |
 HV6590| HV6587 CHURCH 1908                         437.569 METERS 2144429.5 |
 HV6590| HV6588 COTTAGE                             485.228 METERS 2520608.6 |
 HV6590| HV6593 DUSKY                               281.985 METERS 29413     |
 HV6590| HV6596 ROCK                                406.739 METERS 3403845.7 |
 HV6590|---------------------------------------------------------------------|
 HV6590
 HV6590                          SUPERSEDED SURVEY CONTROL
 HV6590
 HV6590  NAD 83(1991)-  38 09 41.89755(N)    076 25 31.93839(W) AD(       ) 3
 HV6590  NAD 83(1986)-  38 09 41.89841(N)    076 25 31.95194(W) AD(       ) 3
 HV6590  NAD 27      -  38 09 41.50600(N)    076 25 33.16600(W) AD(       ) 3
 HV6590  USSD        -  38 09 41.88700(N)    076 25 32.87500(W) AD(       ) 3
 HV6590
 HV6590.Superseded values are not recommended for survey control.
 HV6590
 HV6590.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6590.See file dsdata.pdf to determine how the superseded data were derived.
 HV6590
 HV6590_MARKER: H = DRILL HOLE
 HV6590_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6590_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6590+STABILITY: SURFACE MOTION
 HV6590
 HV6590  HISTORY     - Date     Condition        Report By
 HV6590  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6590  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6590
 HV6590                          STATION DESCRIPTION
 HV6590
 HV6590'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6590'STATION IS ON THE SOUTHEASTERN SHORE OF ST. INIGOES CREEK, NEAR
 HV6590'GRASON WHARF, AND 7/8 MILE NE OF ST. MARYS RIVER, ABOUT 15 FEET
 HV6590'ABOVE HIGH WATER, 7 YARDS SE OF EDGE OF BANK, 13 YARDS NE OF A
 HV6590'STABLE, AND NEAR THREE TREES.
 HV6590'
 HV6590'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6590'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6590'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6590'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6590'POST.  DISTANCE AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE
 HV6590'AS FOLLOWS--RIGHT CORNER OF STABLE, 12.05 METERS (39.5 FEET),
 HV6590'S 15 DEG 34 MIN W.  CHIMNEY OF RALEYS HOUSE, 5/8 MILE, S 45 DEG
 HV6590'34 MIN W.  LEFT TANGENT OF PRIESTS VILLA, 1-1/8 MILES, S 46 DEG
 HV6590'00 MIN W.  NAIL IN BLAZE IN 18-INCH CHERRY TREE, 12.94 METERS
 HV6590'(42.5 FEET), S 64 DEG 30 MIN W.  NEAR CORNER OF WHARF HOUSE,
 HV6590'130 YARDS, S 81 DEG 10 MIN W.  CHIMNEY OF HOUSE, 1/4 MILE, N 67
 HV6590'DEG 58 MIN W.  NAIL IN BLAZE IN ELM TREE, 13.37 METERS (43.9
 HV6590'FEET), N 14 DEG 11 MIN W.  CHIMNEY OF OLD BRICK HOUSE ON HILL, 2
 HV6590'MILES, N 41 DEG 18 MIN E.  NAIL IN BLAZE IN 22-INCH LOCUST
 HV6590'TREE, 6.40 METERS (21.00 FEET), S 84 DEG 45 MIN E.  LEFT CORNER OF
 HV6590'STABLE, 9.19 METERS (30.15 FEET), S 33 DEG 17 MIN E.
 HV6590
 HV6590                          STATION RECOVERY (1942)
 HV6590
 HV6590'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6590'THE STATION MARK WAS FOUND LYING ON THE GROUND.  THIS STATION
 HV6590'IS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3599 ***********************************************************************
 JU3599  DESIGNATION -  GRASS 1898
 JU3599  PID         -  JU3599
 JU3599  STATE/COUNTY-  MD/CECIL
 JU3599  COUNTRY     -  US
 JU3599  USGS QUAD   -  EARLEVILLE (2016)
 JU3599
 JU3599                         *CURRENT SURVEY CONTROL
 JU3599  ______________________________________________________________________
 JU3599* NAD 83(1991) POSITION- 39 29 26.00145(N) 075 56 57.86883(W)   ADJUSTED
 JU3599* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JU3599  ______________________________________________________________________
 JU3599  GEOID HEIGHT    -        -33.325 (meters)                     GEOID18
 JU3599  LAPLACE CORR    -         -0.98  (seconds)                    DEFLEC18
 JU3599  HORZ ORDER      -  THIRD
 JU3599
 JU3599.The horizontal coordinates were established by classical geodetic methods
 JU3599.and adjusted by the National Geodetic Survey in January 1992.
 JU3599
 JU3599.The orthometric height was scaled from a topographic map.
 JU3599
 JU3599.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3599.GEOID18 height accuracy estimate available here.
 JU3599
 JU3599.Click photographs - Photos may exist for this station.
 JU3599
 JU3599.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3599
 JU3599. The following values were computed from the NAD 83(1991) position.
 JU3599
 JU3599;                    North         East     Units Scale Factor Converg.
 JU3599;SPC MD       -   202,986.428   490,375.906   MT  1.00000735   +0 39 33.8
 JU3599;SPC MD       -   665,964.64  1,608,841.62   sFT  1.00000735   +0 39 33.8
 JU3599;UTM  18      - 4,371,646.587   418,359.067   MT  0.99968206   -0 36 13.7
 JU3599
 JU3599!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3599!SPC MD       -   1.00000511  x   1.00000735  =   1.00001246
 JU3599!UTM  18      -   1.00000511  x   0.99968206  =   0.99968717
 JU3599
 JU3599:                Primary Azimuth Mark                     Grid Az
 JU3599:SPC MD       -  CORN 1898                                050 13 32.1
 JU3599:UTM  18      -  CORN 1898                                051 29 19.6
 JU3599
 JU3599_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1835971646(NAD 83)
 JU3599
 JU3599|---------------------------------------------------------------------|
 JU3599| PID    Reference Object                     Distance      Geod. Az  |
 JU3599|                                                           dddmmss.s |
 JU3599| JU3580 CORN 1898                           APPROX. 1.6 KM 0505305.9 |
 JU3599|---------------------------------------------------------------------|
 JU3599
 JU3599                          SUPERSEDED SURVEY CONTROL
 JU3599
 JU3599  NAD 83(1986)-  39 29 25.99344(N)    075 56 57.87454(W) AD(       ) 3
 JU3599  NAD 27      -  39 29 25.60000(N)    075 56 59.08200(W) AD(       ) 3
 JU3599  USSD        -  39 29 25.97900(N)    075 56 58.91500(W) AD(       ) 3
 JU3599
 JU3599.Superseded values are not recommended for survey control.
 JU3599
 JU3599.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3599.See file dsdata.pdf to determine how the superseded data were derived.
 JU3599
 JU3599_MARKER: 61 = POLE
 JU3599
 JU3599  HISTORY     - Date     Condition        Report By
 JU3599  HISTORY     - 1898     FIRST OBSERVED   CGS
 JU3599
 JU3599                          STATION DESCRIPTION
 JU3599
 JU3599'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (JBB)
 JU3599'ON N SIDE OF ELK RIVER, ON POINT DIRECTLY OPPOSITE MOUTH OF
 JU3599'BOHEMIA RIVER, AT HIGH-WATER MARK.  MARKED BY A BOX 3 INCHES
 JU3599'SQUARE AND 3 FEET DEEP, WITH 3-INCH SIGNAL POLE SET THEREIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5145 ***********************************************************************
 JV5145  DESIGNATION -  GRATITUDE
 JV5145  PID         -  JV5145
 JV5145  STATE/COUNTY-  MD/KENT
 JV5145  COUNTRY     -  US
 JV5145  USGS QUAD   -  SWAN POINT (2016)
 JV5145
 JV5145                         *CURRENT SURVEY CONTROL
 JV5145  ______________________________________________________________________
 JV5145* NAD 83(1991) POSITION- 39 08 23.67139(N) 076 15 39.93753(W)   ADJUSTED
 JV5145* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5145  ______________________________________________________________________
 JV5145  GEOID HEIGHT    -        -33.330 (meters)                     GEOID18
 JV5145  LAPLACE CORR    -         -2.03  (seconds)                    DEFLEC18
 JV5145  HORZ ORDER      -  THIRD
 JV5145
 JV5145.The horizontal coordinates were established by classical geodetic methods
 JV5145.and adjusted by the National Geodetic Survey in January 1992.
 JV5145
 JV5145.The orthometric height was scaled from a topographic map.
 JV5145
 JV5145.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5145.GEOID18 height accuracy estimate available here.
 JV5145
 JV5145.Click photographs - Photos may exist for this station.
 JV5145
 JV5145.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5145
 JV5145. The following values were computed from the NAD 83(1991) position.
 JV5145
 JV5145;                    North         East     Units Scale Factor Converg.
 JV5145;SPC MD       -   163,796.269   463,879.318   MT  0.99996044   +0 27 49.5
 JV5145;SPC MD       -   537,388.26  1,521,910.73   sFT  0.99996044   +0 27 49.5
 JV5145;UTM  18      - 4,333,059.747   391,013.254   MT  0.99974626   -0 47 46.0
 JV5145
 JV5145!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5145!SPC MD       -   1.00000511  x   0.99996044  =   0.99996555
 JV5145!UTM  18      -   1.00000511  x   0.99974626  =   0.99975137
 JV5145
 JV5145:                Primary Azimuth Mark                     Grid Az
 JV5145:SPC MD       -  SWAN POINT 3                             280 22 36.8
 JV5145:UTM  18      -  SWAN POINT 3                             281 38 12.3
 JV5145
 JV5145_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9101333059(NAD 83)
 JV5145
 JV5145|---------------------------------------------------------------------|
 JV5145| PID    Reference Object                     Distance      Geod. Az  |
 JV5145|                                                           dddmmss.s |
 JV5145| JV5153 SWAN POINT 3                        APPROX. 1.6 KM 2805026.3 |
 JV5145|---------------------------------------------------------------------|
 JV5145
 JV5145                          SUPERSEDED SURVEY CONTROL
 JV5145
 JV5145  NAD 83(1986)-  39 08 23.66570(N)    076 15 39.94822(W) AD(       ) 3
 JV5145  NAD 27      -  39 08 23.28500(N)    076 15 41.12100(W) AD(       ) 3
 JV5145  USSD        -  39 08 23.63700(N)    076 15 40.94900(W) AD(       ) 3
 JV5145
 JV5145.Superseded values are not recommended for survey control.
 JV5145
 JV5145.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5145.See file dsdata.pdf to determine how the superseded data were derived.
 JV5145
 JV5145_MARKER: Z = SEE DESCRIPTION
 JV5145_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5145_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5145+STABILITY: SURFACE MOTION
 JV5145
 JV5145  HISTORY     - Date     Condition        Report By
 JV5145  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5145  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV5145
 JV5145                          STATION DESCRIPTION
 JV5145
 JV5145'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5145'ON THE EASTERN SIDE OF CHESAPEAKE BAY, AT EASTERN SIDE OF
 JV5145'ENTRANCE TO SWAN CREEK, OPPOSITE MIDDLE OF LITTLE NECK ISLAND, AND
 JV5145'NEAR OLD ROCK HALL WHARF.  STATION IS ON MARSH MEADOW, ABOUT 1
 JV5145'FOOT ABOVE HIGH WATER, 12 YARDS E OF SHORE, 150 YARDS SW OF A
 JV5145'HOUSE, AND 400 YARDS SSW OF ROCK HALL LANDING.  STATION MARK IS
 JV5145'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 JV5145'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 JV5145'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 JV5145'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUBSURFACE MARK IS
 JV5145'CENTER OF 2-INCH TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE
 JV5145'BASE OF THE MONUMENT.  DISTANCE AND BEARINGS TO VARIOUS POINTS OF
 JV5145'REFERENCE ARE AS FOLLOWS--CHIMNEY OF FISHING SHACK ON SWAN POINT,
 JV5145'1 MILE, N 77 DEG 27 MIN W.  LEFT TANGENT OF PILES OF OLD ROCK HALL
 JV5145'WHARF, 200 YARDS, N 43 DEG 59 MIN W.  W GABLE OF STRONG BARN, 3/4
 JV5145'MILE, N 37 DEG 25 MIN W.  CHIMNEY OF TALLEST HOUSE AT ROCK HALL
 JV5145'LANDING, 1/4 MILE, N 5 DEG 59 MIN W.  CHIMNEY OF HOUSE, 1 MILE,
 JV5145'N 1 DEG 55 MIN W.  POST ON NW CORNER OF DOWNEYS PORCH, 150 YARDS.
 JV5145'N 28 DEG 43 MIN E.  NAIL IN BLAZE IN 10-INCH CEDAR TREE, 107
 JV5145'YARDS, S 75 DEG 11 MIN E.  N GABLE OF OLD BARN, 200 YARDS, S 71
 JV5145'DEG 38 MIN E.  N GABLE OF BARN, 1-5/8 MILES, S 38 DEG 53 MIN E.
 JV5145
 JV5145                          STATION RECOVERY (1939)
 JV5145
 JV5145'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5145'STATION NOT RECOVERED.
 JV5145'
 JV5145'THE LOW MARSHY POINT SE OF THE FERRY LANDING HAS BEEN WASHING AWAY
 JV5145'RAPIDLY.  A THOROUGH SEARCH OF THE POINT AND WATER AREA ADJACENT
 JV5145'FAILED TO RECOVER THE MONUMENT.  DESCRIPTION INADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4700 ***********************************************************************
 AB4700  DESIGNATION -  GRAVE
 AB4700  PID         -  AB4700
 AB4700  STATE/COUNTY-  MD/CARROLL
 AB4700  COUNTRY     -  US
 AB4700  USGS QUAD   -  LINEBORO (2016)
 AB4700
 AB4700                         *CURRENT SURVEY CONTROL
 AB4700  ______________________________________________________________________
 AB4700* NAD 83(2011) POSITION- 39 43 04.73100(N) 076 48 27.10109(W)   ADJUSTED
 AB4700* NAD 83(2011) ELLIP HT-   225.518 (meters)        (06/27/12)   ADJUSTED
 AB4700* NAD 83(2011) EPOCH   -  2010.00
 AB4700* NAVD 88 ORTHO HEIGHT -   257.9   (meters)      846.    (feet) GPS OBS
 AB4700  ______________________________________________________________________
 AB4700  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4700  GEOID HEIGHT    -        -32.430 (meters)                     GEOID99
 AB4700  GEOID HEIGHT    -        -32.421 (meters)                     GEOID18
 AB4700  NAD 83(2011) X  -  1,121,247.860 (meters)                     COMP
 AB4700  NAD 83(2011) Y  - -4,783,291.488 (meters)                     COMP
 AB4700  NAD 83(2011) Z  -  4,054,092.992 (meters)                     COMP
 AB4700  LAPLACE CORR    -          2.30  (seconds)                    DEFLEC18
 AB4700
 AB4700  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4700  Standards:
 AB4700         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4700            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4700  -------------------------------------------------------------------
 AB4700  NETWORK    1.64   4.72           0.69   0.64   2.41      0.19098686
 AB4700  -------------------------------------------------------------------
 AB4700  Click here for local accuracies and other accuracy information.
 AB4700
 AB4700.The horizontal coordinates were established by GPS observations
 AB4700.and adjusted by the National Geodetic Survey in June 2012.
 AB4700
 AB4700.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4700.been affixed to the stable North American tectonic plate. See 
 AB4700.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4700
 AB4700.The horizontal coordinates are valid at the epoch date displayed above
 AB4700.which is a decimal equivalence of Year/Month/Day.
 AB4700
 AB4700.The orthometric height was determined by GPS observations and a
 AB4700.high-resolution geoid model.
 AB4700
 AB4700.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4700.GEOID18 height accuracy estimate available here.
 AB4700
 AB4700.Click photographs - Photos may exist for this station.
 AB4700
 AB4700.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4700
 AB4700.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4700
 AB4700.The ellipsoidal height was determined by GPS observations
 AB4700.and is referenced to NAD 83.
 AB4700
 AB4700. The following values were computed from the NAD 83(2011) position.
 AB4700
 AB4700;                    North         East     Units Scale Factor Converg.
 AB4700;SPC MD       -   227,734.877   416,504.278   MT  1.00005788   +0 07 14.9
 AB4700;SPC MD       -   747,160.18  1,366,481.12   sFT  1.00005788   +0 07 14.9
 AB4700;UTM  18      - 4,398,018.494   345,072.321   MT  0.99989551   -1 09 18.9
 AB4700
 AB4700!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4700!SPC MD       -   0.99996462  x   1.00005788  =   1.00002250
 AB4700!UTM  18      -   0.99996462  x   0.99989551  =   0.99986013
 AB4700
 AB4700:                Primary Azimuth Mark                     Grid Az
 AB4700:SPC MD       -  SCHALK                                   268 22 08.8
 AB4700:UTM  18      -  SCHALK                                   269 38 42.6
 AB4700
 AB4700_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4507298018(NAD 83)
 AB4700
 AB4700|---------------------------------------------------------------------|
 AB4700| PID    Reference Object                     Distance      Geod. Az  |
 AB4700|                                                           dddmmss.s |
 AB4700| AB4725 SCHALK                              455.028 METERS 2682923.7 |
 AB4700|---------------------------------------------------------------------|
 AB4700
 AB4700                          SUPERSEDED SURVEY CONTROL
 AB4700
 AB4700  NAD 83(2007)-  39 43 04.73121(N)    076 48 27.10184(W) AD(2002.00) 0
 AB4700  ELLIP H (02/10/07)  225.539  (m)                       GP(2002.00)    
 AB4700  ELLIP H (08/30/02)  225.535  (m)                       GP(       ) 4 2
 AB4700  NAD 83(1991)-  39 43 04.73107(N)    076 48 27.10198(W) AD(       ) 1
 AB4700  ELLIP H (07/03/96)  225.451  (m)                       GP(       ) 1 1
 AB4700  NAVD 88 (07/03/96)  257.9    (m)  GEOID93  model used  GPS OBS        
 AB4700
 AB4700.Superseded values are not recommended for survey control.
 AB4700
 AB4700.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4700.See file dsdata.pdf to determine how the superseded data were derived.
 AB4700
 AB4700_MARKER: DD = SURVEY DISK
 AB4700_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4700_STAMPING: GRAVE 1995
 AB4700_MARK LOGO: MD-013
 AB4700_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4700_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4700+STABILITY: SURFACE MOTION
 AB4700_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4700+SATELLITE: SATELLITE OBSERVATIONS - November 12, 2010
 AB4700
 AB4700  HISTORY     - Date     Condition        Report By
 AB4700  HISTORY     - 1995     MONUMENTED       MD-013
 AB4700  HISTORY     - 20041129 GOOD             GEOCAC
 AB4700  HISTORY     - 20101112 GOOD             GPSSS
 AB4700
 AB4700                          STATION DESCRIPTION
 AB4700
 AB4700'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4700'STATION IS LOCATED ABOUT 5.5 NORTHEAST OF MANCHESTER AND ABOUT 8.0 MI
 AB4700'(12.9 KM) NORTH OF HAMPSTEAD. TO REACH STATION FROM THE INTERSECTION
 AB4700'OF MD ROUTE 30 (HANOVER PIKE) AND MD ROUTE 27 (MANCHESTER ROAD) AT
 AB4700'MANCHESTER GO SOUTH ON MD ROUTE 30 FOR 0.3 MI (0.5 KM) TO THE
 AB4700'INTERSECTION WITH YORK STREET. TURN LEFT ON YORK STREET (TURNS INTO
 AB4700'WATER TANK ROAD AND THEN SCHALK ROAD NO.1) AND GO NORTH FOR 6.3 MI
 AB4700'(10.1 KM) TO THE INTERSECTION WITH GRAVES RUN ROAD. TURN RIGHT ON
 AB4700'GRAVES RUN ROAD AND GO SOUTH FOR 0.15 MI (0.24 KM) TO THE STATION ON
 AB4700'THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4700'MONUMENT SET FLUSH WITH THE GROUND. IT IS 16.1 FT (4.9 M) EAST OF THE
 AB4700'CENTERLINE OF THE ROAD, 25.2 FT (7.7 M) SOUTH OF THE CENTERLINE OF AN
 AB4700'ASPHALT DRIVING LEADING EAST TO THE SOUTH SIDE OF A ONE STORY STONE
 AB4700'HOUSE, 12 FT (3.7 M) SOUTHWEST OF A 2 IN CRAB APPLE TREE AND 76 FT
 AB4700'(23.2 M) NORTH OF TELEPHONE PEDESTAL NO.63.
 AB4700
 AB4700                          STATION RECOVERY (2004)
 AB4700
 AB4700'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 AB4700'STATION IS IN GOOD CONDITION FLUSH WITH THE SURFACE, 16.1 FEET EAST OF
 AB4700'THE CENTERLINE OF THE ROAD, 25.2 FEET SOUTH OF THE CENTERLINE OF A
 AB4700'PAVED DRIVEWAY LEADING EAST TO THE SOUTH SIDE OF A ONE STORY STONE
 AB4700'HOUSE, 7.0 FEET NORTH OF UNDERGROUND TELEPHONE CABLE MARKER NUMBER 63,
 AB4700'AND ABOUT 30 FEET NORTH OF A WOOD FENCE POST AT THE NORTHWEST CORNER
 AB4700'OF A PASTURE ENCLOSED BY AN ELECTRIC FENCE.
 AB4700
 AB4700                          STATION RECOVERY (2010)
 AB4700
 AB4700'RECOVERY NOTE BY GPS SALES AND SERVICES 2010
 AB4700'RECOVERED BY STEVE SNYDER OF A. L. SNYDER SURVEYING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7607 ***********************************************************************
 DG7607  DESIGNATION -  GRAVE
 DG7607  PID         -  DG7607
 DG7607  STATE/COUNTY-  MD/CAROLINE
 DG7607  COUNTRY     -  US
 DG7607  USGS QUAD   -  DENTON (2017)
 DG7607
 DG7607                         *CURRENT SURVEY CONTROL
 DG7607  ______________________________________________________________________
 DG7607* NAD 83(1986) POSITION- 38 55 57.9    (N) 075 49 06.5    (W)   HD_HELD2
 DG7607* NAVD 88 ORTHO HEIGHT -    13.389 (meters)       43.93  (feet) ADJUSTED
 DG7607  ______________________________________________________________________
 DG7607  GEOID HEIGHT    -        -34.731 (meters)                     GEOID18
 DG7607  DYNAMIC HEIGHT  -         13.382 (meters)       43.90  (feet) COMP
 DG7607  MODELED GRAVITY -    980,048.0   (mgal)                       NAVD 88
 DG7607
 DG7607  VERT ORDER      -  SECOND    CLASS I
 DG7607
 DG7607.The horizontal coordinates were established by autonomous hand held GPS
 DG7607.observations and have an estimated accuracy of +/- 10 meters.
 DG7607
 DG7607.The orthometric height was determined by differential leveling and
 DG7607.adjusted by the NATIONAL GEODETIC SURVEY
 DG7607.in December 2004.
 DG7607
 DG7607.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7607.GEOID18 height accuracy estimate available here.
 DG7607
 DG7607.Click photographs - Photos may exist for this station.
 DG7607
 DG7607.The dynamic height is computed by dividing the NAVD 88
 DG7607.geopotential number by the normal gravity value computed on the
 DG7607.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7607.degrees latitude (g = 980.6199 gals.).
 DG7607
 DG7607.The modeled gravity was interpolated from observed gravity values.
 DG7607
 DG7607;                    North         East    Units  Estimated Accuracy
 DG7607;SPC MD       -   141,204.      502,440.      MT  (+/- 10 meters HH2 GPS)
 DG7607
 DG7607_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2905909632(NAD 83)
 DG7607
 DG7607                          SUPERSEDED SURVEY CONTROL
 DG7607
 DG7607.No superseded survey control is available for this station.
 DG7607
 DG7607_MARKER: DH = HORIZONTAL CONTROL DISK
 DG7607_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7607_STAMPING: GRAVE 1962
 DG7607_MARK LOGO: MDBCSM
 DG7607_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7607_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7607+STABILITY: SURFACE MOTION
 DG7607_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7607+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2006
 DG7607
 DG7607  HISTORY     - Date     Condition        Report By
 DG7607  HISTORY     - 1962     MONUMENTED       MDBCSM
 DG7607  HISTORY     - 20021001 GOOD             MDSHA
 DG7607  HISTORY     - 20061215 GOOD             USPSQD
 DG7607
 DG7607                          STATION DESCRIPTION
 DG7607
 DG7607'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7607'THE STATION IS LOCATED ABOUT 3.4 MI (0.0 KM) NORTH OF DENTON, 3.6 MI
 DG7607'(0.0 KM) EAST OF RIDGELY AND 2.9 MI (0.0 KM) SOUTH OF GREENSBORO. TO
 DG7607'REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 313 AND STATE
 DG7607'HIGHWAY 317 IN OIL CITY, GO NORTH ALONG STATE HIGHWAY 313 FOR 2.0 MI
 DG7607'(3.22 KM) TO THE HOLY CROSS CEMETERY AND THE STATION ON THE LEFT.  THE
 DG7607'STATION IS A MARYLAND STATE CONTROL SURVEY DISK SET IN THE TOP OF A 6
 DG7607'INCH (15 CM) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.
 DG7607'IT IS 54.5 FT (16.6 M) WEST OF THE CENTER LINE OF THE HIGHWAY, 12.5 FT
 DG7607'(3.8 M) SOUTH OF THE SOUTHWEST CORNER OF THE PILLAR AT THE MAIN
 DG7607'ENTRANCE TO THE CEMETERY, 26.7 FT (8.1 M) NORTHEAST OF THE JOHN C.
 DG7607'GREGG HEADSTONE, 16.3 FT (5.0 M) SOUTHEAST OF THE EAST CORNER OF THE
 DG7607'VONVILLE HEADSTONE, 8.3 FT (2.5 M) WEST OF THE FACE OF A STONE WALL
 DG7607'AND ABOUT 5 FT (1.5 M) HIGHER THAN THE ROAD.
 DG7607
 DG7607                          STATION RECOVERY (2006)
 DG7607
 DG7607'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 DG7607'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7608 ***********************************************************************
 DG7608  DESIGNATION -  GRAVE AZ MK 2
 DG7608  PID         -  DG7608
 DG7608  STATE/COUNTY-  MD/CAROLINE
 DG7608  COUNTRY     -  US
 DG7608  USGS QUAD   -  DENTON (2017)
 DG7608
 DG7608                         *CURRENT SURVEY CONTROL
 DG7608  ______________________________________________________________________
 DG7608* NAD 83(1986) POSITION- 38 56 21.3    (N) 075 48 55.2    (W)   HD_HELD2
 DG7608* NAVD 88 ORTHO HEIGHT -    13.603 (meters)       44.63  (feet) ADJUSTED
 DG7608  ______________________________________________________________________
 DG7608  GEOID HEIGHT    -        -34.716 (meters)                     GEOID18
 DG7608  DYNAMIC HEIGHT  -         13.595 (meters)       44.60  (feet) COMP
 DG7608  MODELED GRAVITY -    980,049.2   (mgal)                       NAVD 88
 DG7608
 DG7608  VERT ORDER      -  SECOND    CLASS I
 DG7608
 DG7608.The horizontal coordinates were established by autonomous hand held GPS
 DG7608.observations and have an estimated accuracy of +/- 10 meters.
 DG7608
 DG7608.The orthometric height was determined by differential leveling and
 DG7608.adjusted by the NATIONAL GEODETIC SURVEY
 DG7608.in December 2004.
 DG7608
 DG7608.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7608.GEOID18 height accuracy estimate available here.
 DG7608
 DG7608.Click photographs - Photos may exist for this station.
 DG7608
 DG7608.The dynamic height is computed by dividing the NAVD 88
 DG7608.geopotential number by the normal gravity value computed on the
 DG7608.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7608.degrees latitude (g = 980.6199 gals.).
 DG7608
 DG7608.The modeled gravity was interpolated from observed gravity values.
 DG7608
 DG7608;                    North         East    Units  Estimated Accuracy
 DG7608;SPC MD       -   141,929.      502,703.      MT  (+/- 10 meters HH2 GPS)
 DG7608
 DG7608_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2933810351(NAD 83)
 DG7608
 DG7608                          SUPERSEDED SURVEY CONTROL
 DG7608
 DG7608.No superseded survey control is available for this station.
 DG7608
 DG7608_MARKER: DD = SURVEY DISK
 DG7608_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7608_STAMPING: GRAVE AZ 2 2002
 DG7608_MARK LOGO: MDSHA
 DG7608_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7608_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7608+STABILITY: SURFACE MOTION
 DG7608_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7608+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2006
 DG7608
 DG7608  HISTORY     - Date     Condition        Report By
 DG7608  HISTORY     - 2002     MONUMENTED       MDSHA
 DG7608  HISTORY     - 20061215 GOOD             USPSQD
 DG7608
 DG7608                          STATION DESCRIPTION
 DG7608
 DG7608'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7608'THE STATION IS LOCATED ABOUT 3.8 MI (6.12 KM) NORTH OF DENTON, 3.7 MI
 DG7608'(5.95 KM) EAST OF RIDGELY AND 2.5 MI (4.02 KM) SOUTH OF GREENSBORO.
 DG7608'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 313 AND
 DG7608'STATE HIGHWAY 314 IN OIL CITY, GO NORTH ALONG STATE HIGHWAY 313 FOR
 DG7608'2.45 MI (3.94 KM) TO THE STATION ON THE LEFT.  THE STATION IS A
 DG7608'MARYLAND STATE SURVEY DISK SET IN THE TOP OF A 12 INCH (30 CM) ROUND
 DG7608'CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS ABOUT 150 FT
 DG7608'(45.7 M) NORTH OF JOPP ROAD, 29.0 FT (8.8 M) NORTHWEST OF THE CENTER
 DG7608'LINE OF THE HIGHWAY, 37.2 FT (11.3 M) NORTHEAST OF POWER POLE NUMBER
 DG7608'40848-14071, 62.0 FT (18.9 M) NORTHWEST AND ACROSS THE HIGHWAY FROM
 DG7608'POWER POLE NUMBER 40856-14068, AND 15.3 FT (4.7 M) SOUTHWEST OF THE
 DG7608'PROJECTED CENTER LINE OF THE DRIVEWAY LEADING TO HOUSE NUMBER 12079.
 DG7608
 DG7608                          STATION RECOVERY (2006)
 DG7608
 DG7608'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 DG7608'INTERSECTION AT OIL CITY IS 313 AND 317, NOT 314.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1797 ***********************************************************************
 HU1797  DESIGNATION -  GRAVEL
 HU1797  PID         -  HU1797
 HU1797  STATE/COUNTY-  MD/WICOMICO
 HU1797  COUNTRY     -  US
 HU1797  USGS QUAD   -  EDEN (2016)
 HU1797
 HU1797                         *CURRENT SURVEY CONTROL
 HU1797  ______________________________________________________________________
 HU1797* NAD 83(1991) POSITION- 38 19 40.19347(N) 075 44 04.89270(W)   ADJUSTED
 HU1797* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1797  ______________________________________________________________________
 HU1797  GEOID HEIGHT    -        -35.788 (meters)                     GEOID18
 HU1797  LAPLACE CORR    -         -1.32  (seconds)                    DEFLEC18
 HU1797  HORZ ORDER      -  THIRD
 HU1797
 HU1797.The horizontal coordinates were established by classical geodetic methods
 HU1797.and adjusted by the National Geodetic Survey in January 1992.
 HU1797
 HU1797.The orthometric height was scaled from a topographic map.
 HU1797
 HU1797.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1797.GEOID18 height accuracy estimate available here.
 HU1797
 HU1797.Click photographs - Photos may exist for this station.
 HU1797
 HU1797.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1797
 HU1797. The following values were computed from the NAD 83(1991) position.
 HU1797
 HU1797;                    North         East     Units Scale Factor Converg.
 HU1797;SPC MD       -    74,158.952   510,634.453   MT  0.99999527   +0 47 38.9
 HU1797;SPC MD       -   243,303.16  1,675,306.53   sFT  0.99999527   +0 47 38.9
 HU1797;UTM  18      - 4,242,444.963   435,783.768   MT  0.99965078   -0 27 20.3
 HU1797
 HU1797!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1797!SPC MD       -   1.00000550  x   0.99999527  =   1.00000077
 HU1797!UTM  18      -   1.00000550  x   0.99965078  =   0.99965628
 HU1797
 HU1797:                Primary Azimuth Mark                     Grid Az
 HU1797:SPC MD       -  GOLF RESET                               348 02 56.0
 HU1797:UTM  18      -  GOLF RESET                               349 17 55.2
 HU1797
 HU1797_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3578342444(NAD 83)
 HU1797
 HU1797|---------------------------------------------------------------------|
 HU1797| PID    Reference Object                     Distance      Geod. Az  |
 HU1797|                                                           dddmmss.s |
 HU1797| DC7330 GRAVEL RM 1                                        04902     |
 HU1797| DC7331 GRAVEL RM 2                                        15044     |
 HU1797| HU2172 GOLF RESET                          APPROX. 1.8 KM 3485034.9 |
 HU1797|---------------------------------------------------------------------|
 HU1797
 HU1797                          SUPERSEDED SURVEY CONTROL
 HU1797
 HU1797  NAD 83(1986)-  38 19 40.18865(N)    075 44 04.91644(W) AD(       ) 3
 HU1797  NAD 27      -  38 19 39.76900(N)    075 44 06.17000(W) AD(       ) 3
 HU1797
 HU1797.Superseded values are not recommended for survey control.
 HU1797
 HU1797.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1797.See file dsdata.pdf to determine how the superseded data were derived.
 HU1797
 HU1797_MARKER: DS = TRIANGULATION STATION DISK
 HU1797_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1797_STAMPING: GRAVEL 1932
 HU1797_MARK LOGO: CGS
 HU1797_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1797+STABILITY: SURFACE MOTION
 HU1797
 HU1797  HISTORY     - Date     Condition        Report By
 HU1797  HISTORY     - 1932     MONUMENTED       CGS
 HU1797  HISTORY     - 1942     GOOD             CGS
 HU1797
 HU1797                          STATION DESCRIPTION
 HU1797
 HU1797'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1797'STATION IS ON THE EASTERN SHORE OF WICOMICO RIVER, 1/4 MILE ABOVE
 HU1797'THE MOUTH OF CUTMAPTICO CREEK, OR 9/10 MILE BELOW THE CLUBHOUSE OF
 HU1797'THE GREEN HILL COUNTRY CLUB.  A DOCK USED FOR HANDLING ROAD
 HU1797'BUILDING MATERIALS LIES 325 METERS TO THE N OF THE STATION.  THE
 HU1797'CENTER MARK IS 6.5 METERS INSIDE OF THE EDGE OF THE MARSH WHICH
 HU1797'HERE IS OVERGROWN WITH TALL REEDS.
 HU1797'
 HU1797'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1797'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.  MARKS ARE STAMPED WITH
 HU1797'NUMBERS, NAME AND 1932.
 HU1797'
 HU1797'HEIGHT OF SIGNAL ABOVE STATION MARK - 5.5 METERS.
 HU1797
 HU1797                          STATION RECOVERY (1942)
 HU1797
 HU1797'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1797'THE STATION IS LOCATED ON THE EASTERN SHORE OF WICOMICO RIVER 1/4
 HU1797'MILE ABOVE THE MOUTH OF CUTMAPTICO CREEK OR 0.9 MILE BELOW THE
 HU1797'ABANDONED CLUBHOUSE OF THE GREEN HILL COUNTRY CLUB, 770 FEET N OF
 HU1797'THE NW CORNER OF A LARGE WHITE FARMHOUSE, AND 21.3 FEET E OF THE
 HU1797'HIGH-WATER LINE OF THE RIVER IN A MARSH OVER-GROWN WITH TALL
 HU1797'REEDS, A DOCK USED FOR LOADING ROAD MATERIALS OWNED BY PHILLIPS
 HU1797'BROTHERS LIES ABOUT 325 METERS N OF THE STATION ON THE OPPOSITE
 HU1797'SHORE OF THE RIVER.  THE MARK IS BRONZE DISK, STAMPED GRAVEL
 HU1797'1932, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT,
 HU1797'WHICH IS FLUSH WITH THE GROUND.  THE STATION IS IN GOOD
 HU1797'CONDITION.
 HU1797'
 HU1797'REFRENCE MARK NO.1 IS LOCATED 19.300 FEET NE OF THE STATION.  THE
 HU1797'MARK IS A BRONZE DISK, WITH THE ARROW POINTING TOWARD THE STATION,
 HU1797'STAMPED GRAVEL R.M. 1 1932, SET IN THE TOP OF A 12-INCH SQUARE
 HU1797'CONCRETE MONUMENT, WHICH IS FLUSH WITH THE GROUND.  THE MARK IS
 HU1797'IN GOOD CONDITION.
 HU1797'
 HU1797'REFERENCE MARK NO.2 IS LOCATED 13.530 FEET S OF THE STATION, AND
 HU1797'138 FEET FROM THE HIGH-WATER LINE.  THE MARK IS A BRONZE DISK, WITH
 HU1797'THE ARROW POINTING TOWARD THE STATION, STAMPED GRAVEL R.M. 2 1932,
 HU1797'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT, WHICH IS
 HU1797'FLUSH WITH THE GROUND.  THE MARK IS IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6606 ***********************************************************************
 HV6606  DESIGNATION -  GRAVEL
 HV6606  PID         -  HV6606
 HV6606  STATE/COUNTY-  MD/ST MARYS
 HV6606  COUNTRY     -  US
 HV6606  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6606
 HV6606                         *CURRENT SURVEY CONTROL
 HV6606  ______________________________________________________________________
 HV6606* NAD 83(1993) POSITION- 38 10 24.20200(N) 076 26 26.14029(W)   ADJUSTED
 HV6606* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6606  ______________________________________________________________________
 HV6606  GEOID HEIGHT    -        -34.753 (meters)                     GEOID18
 HV6606  LAPLACE CORR    -         -6.09  (seconds)                    DEFLEC18
 HV6606  HORZ ORDER      -  THIRD
 HV6606
 HV6606.The horizontal coordinates were established by classical geodetic methods
 HV6606.and adjusted by the National Geodetic Survey in November 1994.
 HV6606
 HV6606.The orthometric height was scaled from a topographic map.
 HV6606
 HV6606.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6606.GEOID18 height accuracy estimate available here.
 HV6606
 HV6606.Click photographs - Photos may exist for this station.
 HV6606
 HV6606.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6606
 HV6606. The following values were computed from the NAD 83(1993) position.
 HV6606
 HV6606;                    North         East     Units Scale Factor Converg.
 HV6606;SPC MD       -    56,398.987   449,018.940   MT  1.00002444   +0 21 04.0
 HV6606;SPC MD       -   185,035.68  1,473,156.31   sFT  1.00002444   +0 21 04.0
 HV6606;UTM  18      - 4,226,033.769   373,814.855   MT  0.99979610   -0 53 25.7
 HV6606
 HV6606!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6606!SPC MD       -   1.00000534  x   1.00002444  =   1.00002978
 HV6606!UTM  18      -   1.00000534  x   0.99979610  =   0.99980144
 HV6606
 HV6606:                Primary Azimuth Mark                     Grid Az
 HV6606:SPC MD       -  BELLO 1908                               281 44 25.0
 HV6606:UTM  18      -  BELLO 1908                               282 58 54.7
 HV6606
 HV6606_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7381426033(NAD 83)
 HV6606
 HV6606|---------------------------------------------------------------------|
 HV6606| PID    Reference Object                     Distance      Geod. Az  |
 HV6606|                                                           dddmmss.s |
 HV6606| CX2809 GRAVEL RM                            26.990 METERS 08602     |
 HV6606| HV6605 BELLO 1908                          APPROX. 0.9 KM 2820529.0 |
 HV6606|---------------------------------------------------------------------|
 HV6606
 HV6606                          SUPERSEDED SURVEY CONTROL
 HV6606
 HV6606  NAD 83(1991)-  38 10 24.20110(N)    076 26 26.14339(W) AD(       ) 3
 HV6606  NAD 83(1986)-  38 10 24.20182(N)    076 26 26.15683(W) AD(       ) 3
 HV6606  NAD 27      -  38 10 23.81700(N)    076 26 27.37800(W) AD(       ) 3
 HV6606  USSD        -  38 10 24.20000(N)    076 26 27.08500(W) AD(       ) 3
 HV6606
 HV6606.Superseded values are not recommended for survey control.
 HV6606
 HV6606.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6606.See file dsdata.pdf to determine how the superseded data were derived.
 HV6606
 HV6606_MARKER: N = NAIL
 HV6606_SETTING: 0 = UNSPECIFIED SETTING
 HV6606
 HV6606  HISTORY     - Date     Condition        Report By
 HV6606  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6606  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6606  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6606
 HV6606                          STATION DESCRIPTION
 HV6606
 HV6606'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6606'STATION IS ON THE EASTERN SHORE OF ST. MARYS RIVER, ABOUT 3/8 MILE
 HV6606'NNE OF CHANCELLOR POINT, 5/8 MILE E OF PORTOBELLO POINT, ON
 HV6606'GRAVEL WASHED UP BETWEEN RIVER AND SLOUGH, ABOUT ON LEVEL WITH HIGH
 HV6606'WATER, 2 YARDS N OF GRAVEL AND MARSH LINE, 35 YARDS ENE OF OUTLET
 HV6606'OF SLOUGH, AND 65 YARDS SW OF POINT WHERE WOODS AND RIVER
 HV6606'MEET.  STATION MARK IS NAIL IN STUB.
 HV6606'
 HV6606'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6606'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6606'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6606'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6606'26.99 METERS (88.5 FEET) FROM STATION N 86 DEG 03
 HV6606'MIN E.  DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 HV6606'FOLLOWS--WEATHER VANE ON BARN, 1-1/8 MILES, S 40 DEG 18 MIN W.
 HV6606'BETWEEN TWO CHIMNEYS ON HOUSE NEAR PORTOBELLO, 3/4 MILE, N 79 DEG
 HV6606'34 MIN W.  NEAR PEAK OF ROOF BETWEEN TWO CHIMNEYS AT
 HV6606'PORTOBELLO, 5/8 MILE, N 75 DEG 56 MIN W.  HOUSE ON PAGAN POINT, 1
 HV6606'1/8 MILES, N 06 DEG 18 MIN W.  NEAR PEAK OF ROOF OF BROMES WHARF
 HV6606'HOUSE, 1 MILE, N 19 DEG 07 MIN E.  NAIL IN BLAZE IN 20-INCH PINE
 HV6606'TREE, 30.95 METERS (101.5 FEET), N 63 DEG 48 MIN.  NAIL IN BLAZE
 HV6606'IN 18-INCH PINE TREE, 22.75 METERS (74.6 FEET), N 84 DEG 25 MIN E.
 HV6606'NAIL IN BLAZE IN 20-INCH PINE TREE, 21.11 METERS (69.3 FEET), S 68
 HV6606'DEG 53 MIN E.
 HV6606
 HV6606                          STATION RECOVERY (1942)
 HV6606
 HV6606'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6606'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED
 HV6606'FOR.  THE THREE REFERENCES ON PINE TREES WERE RECOVERED AND THE
 HV6606'INTERSECTION OF ALL 3 DISTANCES CAME ABOUT 6 FEET OFF SHORE, AT
 HV6606'ABOUT HALF TIDE.  THIS STATION AND ITS REFERENCE MARK ARE PROBABLY
 HV6606'DESTROYED.
 HV6606
 HV6606                          STATION RECOVERY (1958)
 HV6606
 HV6606'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6606'A THOROUGH SEARCH WAS MADE FOR THIS STATION AND ITS REFERENCE MARKS
 HV6606'WITHOUT RESULTS.  THE STATION WAS PROBABLY DESTROYED BY EROSION AS
 HV6606'STATED IN THE 1942 RECOVERY NOTE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5691 ***********************************************************************
 JV5691  DESIGNATION -  GRAVEL HB
 JV5691  PID         -  JV5691
 JV5691  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5691  COUNTRY     -  US
 JV5691  USGS QUAD   -  CURTIS BAY (2016)
 JV5691
 JV5691                         *CURRENT SURVEY CONTROL
 JV5691  ______________________________________________________________________
 JV5691* NAD 83(1991) POSITION- 39 14 36.07319(N) 076 36 18.05589(W)   ADJUSTED
 JV5691* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5691  ______________________________________________________________________
 JV5691  GEOID HEIGHT    -        -32.815 (meters)                     GEOID18
 JV5691  LAPLACE CORR    -         -5.06  (seconds)                    DEFLEC18
 JV5691  HORZ ORDER      -  THIRD
 JV5691
 JV5691.The horizontal coordinates were established by classical geodetic methods
 JV5691.and adjusted by the National Geodetic Survey in January 1992.
 JV5691
 JV5691.The orthometric height was scaled from a topographic map.
 JV5691
 JV5691.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5691.GEOID18 height accuracy estimate available here.
 JV5691
 JV5691.Click photographs - Photos may exist for this station.
 JV5691
 JV5691.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5691
 JV5691. The following values were computed from the NAD 83(1991) position.
 JV5691
 JV5691;                    North         East     Units Scale Factor Converg.
 JV5691;SPC MD       -   175,095.477   434,097.452   MT  0.99997038   +0 14 52.5
 JV5691;SPC MD       -   574,459.08  1,424,201.39   sFT  0.99997038   +0 14 52.5
 JV5691;UTM  18      - 4,345,009.812   361,492.567   MT  0.99983621   -1 00 55.9
 JV5691
 JV5691!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5691!SPC MD       -   1.00000519  x   0.99997038  =   0.99997557
 JV5691!UTM  18      -   1.00000519  x   0.99983621  =   0.99984139
 JV5691
 JV5691:                Primary Azimuth Mark                     Grid Az
 JV5691:SPC MD       -  ELEVATOR 1915                            354 16 29.6
 JV5691:UTM  18      -  ELEVATOR 1915                            355 32 18.0
 JV5691
 JV5691_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6149245009(NAD 83)
 JV5691
 JV5691|---------------------------------------------------------------------|
 JV5691| PID    Reference Object                     Distance      Geod. Az  |
 JV5691|                                                           dddmmss.s |
 JV5691| JV5669 BROOKLYN CHURCH SPIRE               APPROX. 0.7 KM 1933719.7 |
 JV5691| CA9463 GRAVEL HB RM                         15.113 METERS 26817     |
 JV5691| JV5690 YOKELS PARK FLAGSTAFF               171.697 METERS 26856     |
 JV5691| JV5575 ELEVATOR 1915                       APPROX. 2.0 KM 3543122.1 |
 JV5691|---------------------------------------------------------------------|
 JV5691
 JV5691                          SUPERSEDED SURVEY CONTROL
 JV5691
 JV5691  NAD 83(1986)-  39 14 36.06966(N)    076 36 18.06501(W) AD(       ) 3
 JV5691  NAD 27      -  39 14 35.68700(N)    076 36 19.18600(W) AD(       ) 3
 JV5691  USSD        -  39 14 36.05000(N)    076 36 19.02300(W) AD(       ) 3
 JV5691
 JV5691.Superseded values are not recommended for survey control.
 JV5691
 JV5691.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5691.See file dsdata.pdf to determine how the superseded data were derived.
 JV5691
 JV5691_MARKER: N = NAIL
 JV5691_SETTING: 0 = UNSPECIFIED SETTING
 JV5691
 JV5691  HISTORY     - Date     Condition        Report By
 JV5691  HISTORY     - 1915     MONUMENTED       LOCENG
 JV5691
 JV5691                          STATION DESCRIPTION
 JV5691
 JV5691'DESCRIBED BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1915 (EWE)
 JV5691'ON THE S SIDE OF THE PATAPSCO RIVER, OPPOSITE THE MOUTH OF THE
 JV5691'MIDDLE BRANCH, 5 METERS FROM EDGE OF SAND BEACH AND ABOUT 80
 JV5691'METERS E OF A SMALL BOATHOUSE IN YOKELS PARK.  THE STATION IS
 JV5691'IDENTICAL WITH THE HARBOR BOARD STATION OF SAME NAME AND IS MARKED
 JV5691'BY A COPPER NAIL IN CONCRETE MONUMENT.  THE REFERENCE MARK IS A
 JV5691'STANDARD BRONZE DISK REFERENCE MARK SET IN CONCRETE MONUMENT
 JV5691'PROJECTING 6 INCHES ABOVE THE GROUND.
 JV5691'IT IS ABOUT ON RANGE WITH THE FLAGPOLE ON A LARGE BUILDING JUST
 JV5691'TO THE WESTWARD, AND IS 15.113 METERS (49.58 FEET) FROM THE
 JV5691'STATION S 88 DEG 17 MIN W.  IN 1924 REPORTED DESTROYED
 JV5691'BY DREDGING OPERATIONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3339 ***********************************************************************
 JV3339  DESIGNATION -  GRAVY
 JV3339  PID         -  JV3339
 JV3339  STATE/COUNTY-  MD/WASHINGTON
 JV3339  COUNTRY     -  US
 JV3339  USGS QUAD   -  MASON AND DIXON (2019)
 JV3339
 JV3339                         *CURRENT SURVEY CONTROL
 JV3339  ______________________________________________________________________
 JV3339* NAD 83(1991) POSITION- 39 39 01.87183(N) 077 45 06.52198(W)   ADJUSTED
 JV3339* NAVD 88 ORTHO HEIGHT -   186.216 (meters)      610.94  (feet) ADJUSTED
 JV3339  ______________________________________________________________________
 JV3339  GEOID HEIGHT    -        -34.219 (meters)                     GEOID18
 JV3339  LAPLACE CORR    -          3.27  (seconds)                    DEFLEC18
 JV3339  DYNAMIC HEIGHT  -        186.106 (meters)      610.58  (feet) COMP
 JV3339  MODELED GRAVITY -    980,033.1   (mgal)                       NAVD 88
 JV3339
 JV3339  HORZ ORDER      -  SECOND
 JV3339  VERT ORDER      -  SECOND    CLASS 0
 JV3339
 JV3339.The horizontal coordinates were established by classical geodetic methods
 JV3339.and adjusted by the National Geodetic Survey in January 1992.
 JV3339
 JV3339.The orthometric height was determined by differential leveling and
 JV3339.adjusted by the NATIONAL GEODETIC SURVEY
 JV3339.in June 1991.
 JV3339
 JV3339.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3339.GEOID18 height accuracy estimate available here.
 JV3339
 JV3339.Click photographs - Photos may exist for this station.
 JV3339
 JV3339.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3339
 JV3339.The dynamic height is computed by dividing the NAVD 88
 JV3339.geopotential number by the normal gravity value computed on the
 JV3339.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3339.degrees latitude (g = 980.6199 gals.).
 JV3339
 JV3339.The modeled gravity was interpolated from observed gravity values.
 JV3339
 JV3339. The following values were computed from the NAD 83(1991) position.
 JV3339
 JV3339;                    North         East     Units Scale Factor Converg.
 JV3339;SPC MD       -   220,492.736   335,471.881   MT  1.00004123   -0 28 18.7
 JV3339;SPC MD       -   723,399.92  1,100,627.33   sFT  1.00004123   -0 28 18.7
 JV3339;SPC PA S     -    35,219.116   599,844.501   MT  1.00005625   -0 00 04.2
 JV3339;SPC PA S     -   115,548.05  1,967,989.83   sFT  1.00005625   -0 00 04.2
 JV3339;SPC WV N     -   129,187.346   750,024.456   MT  0.99994083   +1 06 53.8
 JV3339;SPC WV N     -   423,842.15  2,460,705.24   sFT  0.99994083   +1 06 53.8
 JV3339;UTM  18      - 4,392,588.987   263,896.054   MT  1.00028637   -1 45 24.3
 JV3339
 JV3339!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3339!SPC MD       -   0.99997615  x   1.00004123  =   1.00001738
 JV3339!SPC PA S     -   0.99997615  x   1.00005625  =   1.00003240
 JV3339!SPC WV N     -   0.99997615  x   0.99994083  =   0.99991699
 JV3339!UTM  18      -   0.99997615  x   1.00028637  =   1.00026252
 JV3339
 JV3339:                Primary Azimuth Mark                     Grid Az
 JV3339:SPC MD       -  WOOD                                     034 08 46.7
 JV3339:SPC PA S     -  WOOD                                     033 40 32.2
 JV3339:SPC WV N     -  WOOD                                     032 33 34.2
 JV3339:UTM  18      -  WOOD                                     035 25 52.3
 JV3339
 JV3339_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6389692588(NAD 83)
 JV3339
 JV3339|---------------------------------------------------------------------|
 JV3339| PID    Reference Object                     Distance      Geod. Az  |
 JV3339|                                                           dddmmss.s |
 JV3339| JV3335 WOOD                                APPROX. 1.9 KM 0334028.0 |
 JV3339| JV3337 GRAVY RM 1                            6.435 METERS 03805     |
 JV3339| JV3338 GRAVY RM 2                            7.208 METERS 17131     |
 JV3339|---------------------------------------------------------------------|
 JV3339
 JV3339                          SUPERSEDED SURVEY CONTROL
 JV3339
 JV3339  NAD 83(1986)-  39 39 01.87120(N)    077 45 06.53239(W) AD(       ) 2
 JV3339  NAD 27      -  39 39 01.52600(N)    077 45 07.55570(W) AD(       ) 2
 JV3339  NGVD 29             186.42   (m)          611.6    (f) LEVELING    3  
 JV3339  NGVD 29 (11/26/84)  186.416  (m)          611.60   (f) ADJUSTED    2 0
 JV3339
 JV3339.Superseded values are not recommended for survey control.
 JV3339
 JV3339.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3339.See file dsdata.pdf to determine how the superseded data were derived.
 JV3339
 JV3339_MARKER: DS = TRIANGULATION STATION DISK
 JV3339_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3339_STAMPING: GRAVY 1957
 JV3339_MARK LOGO: CGS
 JV3339_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3339+STABILITY: SURFACE MOTION
 JV3339
 JV3339  HISTORY     - Date     Condition        Report By
 JV3339  HISTORY     - 1958     MONUMENTED       CGS
 JV3339  HISTORY     - 1958     GOOD             CGS
 JV3339
 JV3339                          STATION DESCRIPTION
 JV3339
 JV3339'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV3339'STATION IS LOCATED ABOUT 1-3/4 MILES WEST OF HAGERSTOWN ALONG THE
 JV3339'EAST SIDE OF U.S. HIGHWAY 11, WHICH IS NOW UNDER
 JV3339'CONSTRUCTION.  STATION IS 105 FEET NORTH OF FENCE AND 45 FEET EAST
 JV3339'OF EDGE OF CUT BANK.  THE MARK PROJECTS ABOUT 4 INCHES AND THE
 JV3339'DISK IS STAMPED GRAVY 1957.
 JV3339'
 JV3339'REFERENCE MARK NO. 1 IS 45 FEET EAST OF EDGE OF CUT BANK.  THE
 JV3339'DISK IS SET FLUSH IN A DRILL HOLE IN A ROCK THAT PROJECTS ABOUT
 JV3339'4 INCHES AND IS STAMPED GRAVY NO 1 1957.
 JV3339'
 JV3339'REFERENCE MARK NO. 2 IS 86 FEET NORTH OF FENCE AND 60 FEET EAST
 JV3339'OF EDGE OF CUT BANK.  THE DISK IS SET FLUSH IN A DRILL HOLE IN A
 JV3339'ROCK THAT PROJECTS ABOUT 4 INCHES AND IS STAMPED GRAVY NO 2 1957.
 JV3339'
 JV3339'TO REACH STATION FROM THE JUNCTION OF WESTBOUND U.S. HIGHWAY 40
 JV3339'AND SOUTHBOUND U.S. HIGHWAY 11 IN HAGERSTOWN, GO WESTERLY ON
 JV3339'U.S. HIGHWAY 40 FOR 1.8 MILES TO THE JUNCTION OF HIGHWAY UNDER
 JV3339'CONSTRUCTION.  TURN RIGHT AND GO NORTHERLY ON NEW HIGHWAY FOR
 JV3339'0.15 MILE TO THE STATION ON THE RIGHT AS DESCRIBED.
 JV3339'
 JV3339'STATION HAGERS 1935 CAN BE USED FOR AZIMUTH MARK.
 JV3339'
 JV3339'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV3339
 JV3339                          STATION RECOVERY (1958)
 JV3339
 JV3339'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV3339'1 MI SW FROM HAGERSTOWN.
 JV3339'1.0 MILE SOUTHWEST ALONG THE PROPOSED SITE OF NEW HIGHWAY FROM
 JV3339'THE CONCRETE BRIDGE OVER STATE HIGHWAY 58, 110 FEET EAST OF THE
 JV3339'CENTER LINE OF THE NORTH BOUND LANES OF THE HIGHWAY, 120 FEET
 JV3339'NORTH OF A FENCE LINE, AND SET IN THE TOP OF A CONCRETE POST
 JV3339'PROJECTING 0.4 FOOT ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3337 ***********************************************************************
 JV3337  DESIGNATION -  GRAVY RM 1
 JV3337  PID         -  JV3337
 JV3337  STATE/COUNTY-  MD/WASHINGTON
 JV3337  COUNTRY     -  US
 JV3337  USGS QUAD   -  MASON AND DIXON (2019)
 JV3337
 JV3337                         *CURRENT SURVEY CONTROL
 JV3337  ______________________________________________________________________
 JV3337* NAD 83(1986) POSITION- 39 39 02.04   (N) 077 45 06.36   (W)   HD_HELD1
 JV3337* NAVD 88 ORTHO HEIGHT -   186.019 (meters)      610.30  (feet) ADJUSTED
 JV3337  ______________________________________________________________________
 JV3337  GEOID HEIGHT    -        -34.219 (meters)                     GEOID18
 JV3337  DYNAMIC HEIGHT  -        185.909 (meters)      609.94  (feet) COMP
 JV3337  MODELED GRAVITY -    980,033.1   (mgal)                       NAVD 88
 JV3337
 JV3337  VERT ORDER      -  SECOND    CLASS 0
 JV3337
 JV3337.The horizontal coordinates were determined by differentially corrected
 JV3337.hand held GPS observations or other comparable positioning techniques
 JV3337.and have an estimated accuracy of +/- 3 meters.
 JV3337
 JV3337.The orthometric height was determined by differential leveling and
 JV3337.adjusted by the NATIONAL GEODETIC SURVEY
 JV3337.in June 1991.
 JV3337
 JV3337.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3337.GEOID18 height accuracy estimate available here.
 JV3337
 JV3337.Click photographs - Photos may exist for this station.
 JV3337
 JV3337.The dynamic height is computed by dividing the NAVD 88
 JV3337.geopotential number by the normal gravity value computed on the
 JV3337.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3337.degrees latitude (g = 980.6199 gals.).
 JV3337
 JV3337.The modeled gravity was interpolated from observed gravity values.
 JV3337
 JV3337;                    North         East    Units  Estimated Accuracy
 JV3337;SPC MD       -   220,497.9     335,475.8     MT  (+/- 3 meters HH1 GPS) 
 JV3337
 JV3337_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6390092594(NAD 83)
 JV3337
 JV3337                          SUPERSEDED SURVEY CONTROL
 JV3337
 JV3337  NGVD 29 (11/26/84)  186.219  (m)          610.95   (f) ADJUSTED    2 0
 JV3337
 JV3337.Superseded values are not recommended for survey control.
 JV3337
 JV3337.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3337.See file dsdata.pdf to determine how the superseded data were derived.
 JV3337
 JV3337_MARKER: DR = REFERENCE MARK DISK
 JV3337_SETTING: 65 = SET IN UNSPECIFIED ROCK OR BOULDER
 JV3337_SP_SET: UNSPECIFIED ROCK
 JV3337_STAMPING: GRAVY NO 1 1957
 JV3337_MARK LOGO: CGS
 JV3337_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3337
 JV3337  HISTORY     - Date     Condition        Report By
 JV3337  HISTORY     - 1957     MONUMENTED       CGS
 JV3337  HISTORY     - 20201104 MARK NOT FOUND   NAGEL
 JV3337
 JV3337                          STATION DESCRIPTION
 JV3337
 JV3337'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV3337'1 MI SW FROM HAGERSTOWN.
 JV3337'1.0 MILE SOUTHWEST ALONG THE PROPOSED SITE OF THE NEW HIGHWAY FROM
 JV3337'THE CONCRETE BRIDGE OVER STATE HIGHWAY 58, 21.11 FET NORTH-NORTHEAST
 JV3337'OF THE TRIANGULATION STATION, AND 45 FEET EAST OF EDGE OF CUT
 JV3337'BANK.  A STANDARD REFERENCE-MARK DISK, STAMPED GRAVY NO 1 1957
 JV3337'AND SET FLUSH IN A DRILL HOLE IN A ROCK THAT PROJECTS ABOUT 4
 JV3337'INCHES.
 JV3337
 JV3337                          STATION RECOVERY (2020)
 JV3337
 JV3337'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2020 (RN)
 JV3337'STATION NOT RECOVERED.  LOCATION OF STATION FALLS WITHIN A NEWER SWM
 JV3337'POND AND IS LIKELY DESTROYED.  NO SIGNS OF ROCK OUTCROP IN AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5817 ***********************************************************************
 HV5817  DESIGNATION -  GRAY
 HV5817  PID         -  HV5817
 HV5817  STATE/COUNTY-  MD/QUEEN ANNES
 HV5817  COUNTRY     -  US
 HV5817  USGS QUAD   -  QUEENSTOWN (2016)
 HV5817
 HV5817                         *CURRENT SURVEY CONTROL
 HV5817  ______________________________________________________________________
 HV5817* NAD 83(1991) POSITION- 38 58 22.11093(N) 076 12 34.65933(W)   ADJUSTED
 HV5817* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5817  ______________________________________________________________________
 HV5817  GEOID HEIGHT    -        -33.797 (meters)                     GEOID18
 HV5817  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 HV5817  HORZ ORDER      -  SECOND
 HV5817
 HV5817.The horizontal coordinates were established by classical geodetic methods
 HV5817.and adjusted by the National Geodetic Survey in January 1992.
 HV5817
 HV5817.The orthometric height was scaled from a topographic map.
 HV5817
 HV5817.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5817.GEOID18 height accuracy estimate available here.
 HV5817
 HV5817.Click photographs - Photos may exist for this station.
 HV5817
 HV5817.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5817
 HV5817. The following values were computed from the NAD 83(1991) position.
 HV5817
 HV5817;                    North         East     Units Scale Factor Converg.
 HV5817;SPC MD       -   145,284.184   468,489.125   MT  0.99995128   +0 29 45.8
 HV5817;SPC MD       -   476,653.19  1,537,034.74   sFT  0.99995128   +0 29 45.8
 HV5817;UTM  18      - 4,314,454.881   395,214.503   MT  0.99973520   -0 45 39.1
 HV5817
 HV5817!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5817!SPC MD       -   1.00000518  x   0.99995128  =   0.99995646
 HV5817!UTM  18      -   1.00000518  x   0.99973520  =   0.99974038
 HV5817
 HV5817:                Primary Azimuth Mark                     Grid Az
 HV5817:SPC MD       -  LOVE POINT LIGHTHOUSE                    325 16 15.0
 HV5817:UTM  18      -  LOVE POINT LIGHTHOUSE                    326 31 39.9
 HV5817
 HV5817_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9521414454(NAD 83)
 HV5817
 HV5817|---------------------------------------------------------------------|
 HV5817| PID    Reference Object                     Distance      Geod. Az  |
 HV5817|                                                           dddmmss.s |
 HV5817| HV5750 OLD HOUSE SEAWARD GABLE             APPROX. 2.0 KM 0623833.8 |
 HV5817| CX2810 GRAY RM 1                            18.550 METERS 09821     |
 HV5817| HV5792 OLD BARN CUPOLA                     217.085 METERS 12459     |
 HV5817| CX2811 GRAY RM 2                            28.545 METERS 15350     |
 HV5817| HV5779 SHINGLE ROOF HOUSE TALL E CHIM      APPROX. 1.5 KM 2393732.4 |
 HV5817| HV6154 SIG                                 APPROX. 4.2 KM 2760422.9 |
 HV5817| HV6164 RED BARN SOUTH VENTILATOR           APPROX. 7.6 KM 2901600.0 |
 HV5817| JV5162 LOVE POINT LIGHTHOUSE               APPROX.11.3 KM 3254600.8 |
 HV5817| JV5068 CEDAR PT GUN CLUB LARGE CHIM        APPROX. 4.1 KM 3580819.6 |
 HV5817|---------------------------------------------------------------------|
 HV5817
 HV5817                          SUPERSEDED SURVEY CONTROL
 HV5817
 HV5817  NAD 83(1986)-  38 58 22.10616(N)    076 12 34.67178(W) AD(       ) 2
 HV5817  NAD 27      -  38 58 21.70100(N)    076 12 35.84000(W) AD(       ) 2
 HV5817
 HV5817.Superseded values are not recommended for survey control.
 HV5817
 HV5817.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5817.See file dsdata.pdf to determine how the superseded data were derived.
 HV5817
 HV5817_MARKER: DS = TRIANGULATION STATION DISK
 HV5817_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5817_STAMPING: GRAY 1932
 HV5817_MARK LOGO: CGS
 HV5817_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5817+STABILITY: SURFACE MOTION
 HV5817
 HV5817  HISTORY     - Date     Condition        Report By
 HV5817  HISTORY     - 1932     MONUMENTED       CGS
 HV5817  HISTORY     - 1938     GOOD             CGS
 HV5817  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5817
 HV5817                          STATION DESCRIPTION
 HV5817
 HV5817'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (JAB)
 HV5817'STATION IS ON THE S SHORE OF CHESTER RIVER ON STONY BAR BLUFF
 HV5817'BETWEEN JACKSON CREEK AND WINCHESTER CREEK IN THE W EDGE OF A
 HV5817'CULTIVATED FIELD.  HIGH-WATER LINE IS 25 METERS N OF THE STATION
 HV5817'ON RANGE WITH STATION GOLF ON WICKES BEACH.  A WIRE FENCE ALONG A
 HV5817'ROW OF CEDAR TREES IS 1.5 METERS W OF THE STATION.
 HV5817'
 HV5817'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV5817'DISKS SET IN CONCRETE.
 HV5817'
 HV5817'REFERENCE MARK NO.2 IS IN THE SAME FENCE ROW OF CEDARS DIRECTLY
 HV5817'INLAND.
 HV5817'
 HV5817'REFERENCE MARK NO.1 IS NEAR THE SEAWARD EDGE OF A ROW OF SMALL
 HV5817'DECIDUOUS TREES.  THE PROPERTY IS OWNED BY DR. COOK AND TENANTED
 HV5817'BY REESE FALKNER.
 HV5817'
 HV5817'HEIGHT OF SIGNAL ABOVE STATION MARK - 6 METERS.
 HV5817
 HV5817                          STATION RECOVERY (1938)
 HV5817
 HV5817'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV5817'STATION AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.  STATION
 HV5817'IS LOCATED ON THE S SIDE OF CHESTER RIVER BETWEEN JACKSON AND
 HV5817'WINCHESTER CREEKS ON PROPERTY OF DR. COOK, ABOUT 20 METERS S OF
 HV5817'5-FOOT BLUFF AT RIVER EDGE AND 5 FEET E OF FENCE RUNNING SSE - NNW
 HV5817'AND ABOUT 16 METERS W OF END OF PROMINENT LANE OF DECIDUOUS TREES.
 HV5817'
 HV5817'STATION AND REFERENCE MARKS ARE STANDARD DISKS SET IN CONCRETE
 HV5817'BLOCKS 8 INCHES SQUARE AT TOP AND SET FLUSH WITH SURFACE OF GROUND.
 HV5817'
 HV5817'REFERENCE MARK NO.1 IS E OF STATION ABOUT 5 METERS SE OF END OF
 HV5817'LANE OF TREES.
 HV5817'
 HV5817'REFERENCE MARK NO.2 IS SSE OF STATION AND 2-1/2 FEET E OF FENCE
 HV5817'LINE.  THE FINIAL OF LOVE POINT LIGHTHOUSE IS VISIBLE FROM THE
 HV5817'GROUND AND CAN BE USED AS AN AZIMUTH MARK.
 HV5817'
 HV5817'STATION IS REACHED FROM QUEENSTOWN BY FOLLOWING STATE HIGHWAY 404
 HV5817'TO THE W TO A CINDER ROAD TO THE RIGHT OPPOSITE GRASONVILLE
 HV5817'GRAMMAR SCHOOL, THENCE RIGHT AND GO 0.5 MILE, BEARING LEFT, TO
 HV5817'GATE AT BEGINNING OF PROPERTY.  PROCEED N 0.5 MILE TO FARM
 HV5817'BUILDINGS, PASSING THROUGH 2 GATES TO PROMINENT TREE BORDERED
 HV5817'LANE, FOLLOW ALONG LANE ABOUT 0.1 MILE TO WATERS EDGE AND STATION.
 HV5817
 HV5817                          STATION RECOVERY (1961)
 HV5817
 HV5817'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5817'STATION AND REFERENCE MARKS WERE NOT RECOVERED AFTER A CAREFUL
 HV5817'SEARCH.  IT NOW PLOTS IN OR VERY CLOSE TO THE WATER AND HAS EITHER
 HV5817'BEEN DESTROYED BY EROSION OR BY THE CONSTRUCTION OF A BULKHEAD
 HV5817'ALONG THE SHORE AT THIS POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7197 ***********************************************************************
 HV7197  DESIGNATION -  GRAY
 HV7197  PID         -  HV7197
 HV7197  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7197  COUNTRY     -  US
 HV7197  USGS QUAD   -  DEALE (2016)
 HV7197
 HV7197                         *CURRENT SURVEY CONTROL
 HV7197  ______________________________________________________________________
 HV7197* NAD 83(1991) POSITION- 38 49 30.56141(N) 076 34 57.78668(W)   ADJUSTED
 HV7197* NAVD 88 ORTHO HEIGHT -    52.    (meters)      171.    (feet) SCALED
 HV7197  ______________________________________________________________________
 HV7197  GEOID HEIGHT    -        -33.385 (meters)                     GEOID18
 HV7197  LAPLACE CORR    -         -4.84  (seconds)                    DEFLEC18
 HV7197  HORZ ORDER      -  SECOND
 HV7197
 HV7197.The horizontal coordinates were established by classical geodetic methods
 HV7197.and adjusted by the National Geodetic Survey in January 1992.
 HV7197
 HV7197.The orthometric height was scaled from a topographic map.
 HV7197
 HV7197.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7197.GEOID18 height accuracy estimate available here.
 HV7197
 HV7197.Click photographs - Photos may exist for this station.
 HV7197
 HV7197.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7197
 HV7197. The following values were computed from the NAD 83(1991) position.
 HV7197
 HV7197;                    North         East     Units Scale Factor Converg.
 HV7197;SPC MD       -   128,679.879   436,234.459   MT  0.99995024   +0 15 42.8
 HV7197;SPC MD       -   422,177.24  1,431,212.55   sFT  0.99995024   +0 15 42.8
 HV7197;UTM  18      - 4,298,564.115   362,609.193   MT  0.99983244   -0 59 32.8
 HV7197
 HV7197!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7197!SPC MD       -   0.99999712  x   0.99995024  =   0.99994736
 HV7197!UTM  18      -   0.99999712  x   0.99983244  =   0.99982956
 HV7197
 HV7197:                Primary Azimuth Mark                     Grid Az
 HV7197:SPC MD       -  OWENS                                    259 33 09.8
 HV7197:UTM  18      -  OWENS                                    260 48 25.4
 HV7197
 HV7197_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6260998564(NAD 83)
 HV7197
 HV7197|---------------------------------------------------------------------|
 HV7197| PID    Reference Object                     Distance      Geod. Az  |
 HV7197|                                                           dddmmss.s |
 HV7197| CX2812 GRAY RM 1                            33.940 METERS 21955     |
 HV7197| HV7227 OWENS                               APPROX. 4.5 KM 2594852.6 |
 HV7197| CX2813 GRAY RM 2 AZIMUTH                                  3325033.7 |
 HV7197| CX2814 GRAY RM 3                            31.251 METERS 34922     |
 HV7197|---------------------------------------------------------------------|
 HV7197
 HV7197                          SUPERSEDED SURVEY CONTROL
 HV7197
 HV7197  NAD 83(1986)-  38 49 30.55745(N)    076 34 57.79866(W) AD(       ) 2
 HV7197  NAD 27      -  38 49 30.14908(N)    076 34 58.93532(W) AD(       ) 2
 HV7197
 HV7197.Superseded values are not recommended for survey control.
 HV7197
 HV7197.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7197.See file dsdata.pdf to determine how the superseded data were derived.
 HV7197
 HV7197_MARKER: DS = TRIANGULATION STATION DISK
 HV7197_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7197_STAMPING: GRAY 1933
 HV7197_MARK LOGO: CGS
 HV7197
 HV7197  HISTORY     - Date     Condition        Report By
 HV7197  HISTORY     - 1933     MONUMENTED       CGS
 HV7197  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV7197
 HV7197                          STATION DESCRIPTION
 HV7197
 HV7197'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 HV7197'THIS IS A SECOND-ORDER STATION, LOCATED ON PROPERTY OF JOHN H.
 HV7197'GRAY ABOUT 2 MILES S OF THE VILLAGE OF OWENSVILLE, MARYLAND.
 HV7197'
 HV7197'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV7197'DISKS SET IN CONCRETE.
 HV7197'
 HV7197'REFERENCE MARK NO. 1 IS 15 FEET N OF A 48-INCH RED-OAK TREE AND 12
 HV7197'FEET W OF CENTER LINE OF ROAD.
 HV7197'
 HV7197'REFERENCE MARK NO.2 IS 12 FEET E OF THE CENTER LINE OF ROAD AND 40
 HV7197'PACES S OF THE BASE OF GRADE IN THE ROAD.
 HV7197'
 HV7197'REFERENCE MARK NO.3 IS IN FENCE LINE, 39 FEET N OF NW CORNER OF
 HV7197'DOUBLE GARAGE, 75 FEET E OF CENTER LINE OF ROAD.
 HV7197'
 HV7197'ALL REFERENCE MARKS PROJECT ABOUT A FOOT ABOVE THE SURFACE OF THE
 HV7197'GROUND AND ALL ARE STAMPED GRAY NO.  1933.  THE STATION MARK IS
 HV7197'STAMPED GRAY 1933.
 HV7197'
 HV7197'NO OBJECTS OTHER THAN THE REFERENCE MARKS WERE VISIBLE FROM THE
 HV7197'GROUND.
 HV7197'
 HV7197'TO REACH FROM THE JUNCTION OF U.S. ROUTE 50 (WASHINGTON-ANNAPOLIS
 HV7197'HIGHWAY) AND MARYLAND STATE ROUTE 2 AT PAROLE, MARYLAND, ABOUT 3
 HV7197'MILES W OF DOWNTOWN ANNAPOLIS, TAKE STATE ROUTE 2 AND GO S FOR
 HV7197'12.0 MILES TO ROAD T-JUNCTION AND TURN LEFT (E).  THENCE E 0.8
 HV7197'MILE TO THE VILLAGE OF OWENSVILLE AND TURN RIGHT (S).  THENCE IN A
 HV7197'SOUTHERLY DIRECTION ALONG THIS MAIN ROAD 2.3 MILES TO THE STATION
 HV7197'ON THE HIGHEST GROUND TO THE LEFT.  THERE IS AT PRESENT A SHARP
 HV7197'LEFT TURN AND THEN A RIGHT TURN IN THIS MAIN ROAD 1.0 MILE S OF
 HV7197'OWENSVILLE AND ANOTHER RIGHT TURN 1.3 MILES S OF OWENSVILLE.  THE
 HV7197'STATION IS 76 FEET E OF THE CENTERLINE OF ROAD, 50.2 FEET SW OF
 HV7197'THE SW CORNER OF DOUBLE GARAGE, AND 112.7 FEET N OF THE NW CORNER
 HV7197'OF DWELLING HOUSE.  THE MARK IS FLUSH WITH THE SURFACE OF THE
 HV7197'GROUND.  TRUCKS MAY BE DRIVEN DIRECTLY TO THE MARK.
 HV7197'
 HV7197'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV7197
 HV7197                          STATION RECOVERY (1943)
 HV7197
 HV7197'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7197'ALTHOUGH A THOROUGH SEARCH WAS MADE, NO TRACE OF THE AZIMUTH MARK
 HV7197'COULD BE FOUND.  THE DESCRIPTION IS INADEQUATE FOR RECOVERY OF THE
 HV7197'AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5092 ***********************************************************************
 JV5092  DESIGNATION -  GRAY
 JV5092  PID         -  JV5092
 JV5092  STATE/COUNTY-  MD/KENT
 JV5092  COUNTRY     -  US
 JV5092  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5092
 JV5092                         *CURRENT SURVEY CONTROL
 JV5092  ______________________________________________________________________
 JV5092* NAD 83(1991) POSITION- 39 06 28.09287(N) 076 13 13.36013(W)   ADJUSTED
 JV5092* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5092  ______________________________________________________________________
 JV5092  GEOID HEIGHT    -        -33.434 (meters)                     GEOID18
 JV5092  LAPLACE CORR    -         -1.98  (seconds)                    DEFLEC18
 JV5092  HORZ ORDER      -  THIRD
 JV5092
 JV5092.The horizontal coordinates were established by classical geodetic methods
 JV5092.and adjusted by the National Geodetic Survey in January 1992.
 JV5092
 JV5092.The orthometric height was scaled from a topographic map.
 JV5092
 JV5092.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5092.GEOID18 height accuracy estimate available here.
 JV5092
 JV5092.Click photographs - Photos may exist for this station.
 JV5092
 JV5092.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5092
 JV5092. The following values were computed from the NAD 83(1991) position.
 JV5092
 JV5092;                    North         East     Units Scale Factor Converg.
 JV5092;SPC MD       -   160,261.577   467,429.613   MT  0.99995802   +0 29 21.5
 JV5092;SPC MD       -   525,791.52  1,533,558.66   sFT  0.99995802   +0 29 21.5
 JV5092;UTM  18      - 4,329,448.655   394,484.241   MT  0.99973709   -0 46 11.5
 JV5092
 JV5092!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5092!SPC MD       -   1.00000513  x   0.99995802  =   0.99996315
 JV5092!UTM  18      -   1.00000513  x   0.99973709  =   0.99974222
 JV5092
 JV5092:                Primary Azimuth Mark                     Grid Az
 JV5092:SPC MD       -  HERRING                                  043 42 02.3
 JV5092:UTM  18      -  HERRING                                  044 57 35.3
 JV5092
 JV5092_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9448429448(NAD 83)
 JV5092
 JV5092|---------------------------------------------------------------------|
 JV5092| PID    Reference Object                     Distance      Geod. Az  |
 JV5092|                                                           dddmmss.s |
 JV5092| JV5064 HERRING                             APPROX. 0.5 KM 0441123.8 |
 JV5092| JV5075 PRUSSIAN                            373.629 METERS 16612     |
 JV5092|---------------------------------------------------------------------|
 JV5092
 JV5092                          SUPERSEDED SURVEY CONTROL
 JV5092
 JV5092  NAD 83(1986)-  39 06 28.08761(N)    076 13 13.37167(W) AD(       ) 3
 JV5092  NAD 27      -  39 06 27.68400(N)    076 13 14.52800(W) AD(       ) 3
 JV5092  USSD        -  39 06 28.08100(N)    076 13 14.37800(W) AD(       ) 3
 JV5092
 JV5092.Superseded values are not recommended for survey control.
 JV5092
 JV5092.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5092.See file dsdata.pdf to determine how the superseded data were derived.
 JV5092
 JV5092_MARKER: H = DRILL HOLE
 JV5092_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5092_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5092+STABILITY: SURFACE MOTION
 JV5092
 JV5092  HISTORY     - Date     Condition        Report By
 JV5092  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5092  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5092
 JV5092                          STATION DESCRIPTION
 JV5092
 JV5092'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5092'STATION IS ON THE WESTERN SHORE OF UPPER GRAYS INN CREEK, ABOUT
 JV5092'1-3/4 MILES NW OF CHESTER RIVER, 250 YARDS W OF BROWNS POINT, AND 1
 JV5092'MILE SSE OF LEARYS MILL WHARF, IN A CULTIVATED FIELD, ABOUT 3 FEET
 JV5092'ABOVE HIGH WATER, 10 YARDS S OF SHORE, 200 YARDS N OF A GROUP OF
 JV5092'FIVE PINE TREES, AND ABOUT ON LINE WITH TWO CEDAR TREES N OF
 JV5092'STATION.
 JV5092'
 JV5092'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5092'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5092'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5092'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5092'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 JV5092'INCHES BELOW THE BASE OF THE MONUMENT.
 JV5092'
 JV5092'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5092'FOLLOWS--W ONE OF A GROUP OF PINE TREES (12 INCHES IN DIAMETER), 200
 JV5092'YARDS, S 14 DEG 56 MIN W.  N CHIMNEY OF HOUSE, 1/4 MILE, S 43 DEG 09
 JV5092'MIN W.  STACK OF LEARYS SAWMILL, 5/8 MILE, N 32 DEG 40 MIN W. WICKS
 JV5092'WINDMILL, 1-1/2 MILES, N 31 DEG 02 MIN W. CHIMNEY OF SMALL HOUSE,
 JV5092'3/4 MILE, N 25 DEG 54 MIN W. NAIL IN BLAZE IN DEAD 6-INCH CEDAR
 JV5092'TREE, 4.43 METERS (14.53 FEET), N 08 DEG 33 MIN W. E CHIMNEY OF
 JV5092'HOUSE, 1/2 MILE, N 00 DEG 25 MIN W. LONE DEAD PINE TREE, 1/4 MILE,
 JV5092'N 43 DEG 43 MIN E. S GABLE OF BARN, 3/8 MILE, N 54 DEG 06 MIN E.
 JV5092'NAIL IN BLAZE IN 3-INCH CEDAR TREE, 14.67 METERS (48.1 FEET), N 66
 JV5092'DEG 16 MIN E.  CHIMNEY OF HARRIS HOUSE, 1-3/8 MILES, S 28
 JV5092'DEG 26 MIN E.
 JV5092
 JV5092                          STATION RECOVERY (1941)
 JV5092
 JV5092'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5092'SEARCHED FOR BUT NOT FOUND.  AREA IS CULTIVATED AND REFERENCE TREES
 JV5092'ARE GONE.  BELIEVED TO HAVE BEEN PLOWED OUT.  RECOMMEND THAT STATION
 JV5092'BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3868 ***********************************************************************
 JU3868  DESIGNATION -  GRAYS HILL
 JU3868  PID         -  JU3868
 JU3868  STATE/COUNTY-  MD/CECIL
 JU3868  COUNTRY     -  US
 JU3868  USGS QUAD   -  ELKTON (2016)
 JU3868
 JU3868                         *CURRENT SURVEY CONTROL
 JU3868  ______________________________________________________________________
 JU3868* NAD 83(1991) POSITION- 39 36 47.70707(N) 075 47 50.60547(W)   ADJUSTED
 JU3868* NAVD 88 ORTHO HEIGHT -    82.    (meters)      269.    (feet) SCALED
 JU3868  ______________________________________________________________________
 JU3868  GEOID HEIGHT    -        -33.105 (meters)                     GEOID18
 JU3868  LAPLACE CORR    -          1.67  (seconds)                    DEFLEC18
 JU3868  HORZ ORDER      -  SECOND
 JU3868
 JU3868.The horizontal coordinates were established by classical geodetic methods
 JU3868.and adjusted by the National Geodetic Survey in January 1992.
 JU3868
 JU3868.The orthometric height was scaled from a topographic map.
 JU3868
 JU3868.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3868.GEOID18 height accuracy estimate available here.
 JU3868
 JU3868.Click photographs - Photos may exist for this station.
 JU3868
 JU3868.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3868
 JU3868. The following values were computed from the NAD 83(1991) position.
 JU3868
 JU3868;                    North         East     Units Scale Factor Converg.
 JU3868;SPC MD       -   216,769.350   503,272.871   MT  1.00003264   +0 45 17.3
 JU3868;SPC MD       -   711,184.11  1,651,154.41   sFT  1.00003264   +0 45 17.3
 JU3868;UTM  18      - 4,385,137.104   431,552.139   MT  0.99965768   -0 30 30.4
 JU3868
 JU3868!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3868!SPC MD       -   0.99999237  x   1.00003264  =   1.00002501
 JU3868!UTM  18      -   0.99999237  x   0.99965768  =   0.99965005
 JU3868
 JU3868:                Primary Azimuth Mark                     Grid Az
 JU3868:SPC MD       -  MEETINGHOUSE HILL RESET                  033 06 09.2
 JU3868:UTM  18      -  MEETINGHOUSE HILL RESET                  034 21 56.9
 JU3868
 JU3868_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3155285137(NAD 83)
 JU3868
 JU3868|---------------------------------------------------------------------|
 JU3868| PID    Reference Object                     Distance      Geod. Az  |
 JU3868|                                                           dddmmss.s |
 JU3868| JU3809 MEETINGHOUSE HILL RESET             APPROX.13.3 KM 0335126.5 |
 JU3868| JU3836 WILLIAMS FLAG IN TREE               APPROX. 4.9 KM 0513243.2 |
 JU3868| JU3709 NEW CASTLE EMMANUEL PE CHURCH       APPROX.20.8 KM 0751501.5 |
 JU3868|---------------------------------------------------------------------|
 JU3868
 JU3868                          SUPERSEDED SURVEY CONTROL
 JU3868
 JU3868  NAD 83(1986)-  39 36 47.70089(N)    075 47 50.61220(W) AD(       ) 2
 JU3868  NAD 27      -  39 36 47.31100(N)    075 47 51.84700(W) AD(       ) 2
 JU3868  USBS        -  39 36 44.50000(N)    075 47 32.43000(W) AD(       ) 3
 JU3868  USSD        -  39 36 47.69000(N)    075 47 51.69000(W) AD(       ) 3
 JU3868
 JU3868.Superseded values are not recommended for survey control.
 JU3868
 JU3868.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3868.See file dsdata.pdf to determine how the superseded data were derived.
 JU3868
 JU3868_MARKER: V = STONE MONUMENT
 JU3868_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3868_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3868_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3868+SATELLITE: SATELLITE OBSERVATIONS - May 28, 2008
 JU3868
 JU3868  HISTORY     - Date     Condition        Report By
 JU3868  HISTORY     - 1892     MONUMENTED       CGS
 JU3868  HISTORY     - 1958     SEE DESCRIPTION  CGS
 JU3868  HISTORY     - 19951203 GOOD             USPSQD
 JU3868  HISTORY     - 20080528 GOOD             INDIV
 JU3868
 JU3868                          STATION DESCRIPTION
 JU3868
 JU3868'DESCRIBED BY COAST AND GEODETIC SURVEY 1892 (WCH)
 JU3868'IN THE EASTERN PART OF CECIL COUNTY, ABOUT 2 MILES E BY N FROM
 JU3868'THE TOWN OF ELKTON, 1/2 MILE W FROM DELAWARE STATE LINE, ON SUMMIT
 JU3868'OF A VERY PROMINENT HILL, WHICH THOUGH ONLY ABOUT 250 FEET HIGH
 JU3868'RISES QUITE ABRUPTLY SOME 150 FEET ABOVE SURROUNDING
 JU3868'PLAIN.  STATION IS NEARLY W OF A HOUSE ON EASTERN BROW OF HILL,
 JU3868'OCCUPIED IN 1892 BY A MR. WILSON.
 JU3868'
 JU3868'UNDERGROUND MARK IS AN EARTHEN CROCK, SURFACE MARK IS A STONE
 JU3868'POST MARKED U.S. 1892.
 JU3868
 JU3868                          STATION RECOVERY (1958)
 JU3868
 JU3868'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3868'THE SURFACE MARK HAS BEEN DESTROYED, HOWEVER THE SUB SURFACE
 JU3868'MARK WAS RECOVERED AND A NEW SUB SURFACE MARK AND SURFACE MARK
 JU3868'WERE SET.  THE SUB SURFACE MARK IS A STANDARD TRIANGULATION
 JU3868'STATION MARK DISK SET IN THE TOP OF A TILE PIPE.  THE SURFACE
 JU3868'MARK IS A STANDARD TRIANGULATION STATION MARK DISK SET IN A
 JU3868'12 X 12 INCH CONCRETE POST PROJECTING 2 INCHES AND THE DISK IS
 JU3868'STAMPED GRAYS HILL 1892 1958.
 JU3868'
 JU3868'A TRAVERSE CONNECTION WAS MADE FROM GRAYS HILL 2 AND THE DISTANCE
 JU3868'IS 97.29 FEET OR 29.655 METERS.
 JU3868'
 JU3868'TO REACH FROM THE POST OFFICE IN ELKTON, GO EAST ON MAIN STREET
 JU3868'FOR 2.0 MILES TO A SIDE ROAD LEFT AND A PRIVATE DRIVEWAY ON RIGHT,
 JU3868'TURN RIGHT AND FOLLOW DRIVEWAY FOR 0.5 MILE TO LARGE HOUSE AND
 JU3868'THE STATION IS 274 FEET WEST-SOUTHWEST OF THE NORTHWEST CORNER OF
 JU3868'HOUSE.
 JU3868
 JU3868                          STATION RECOVERY (1995)
 JU3868
 JU3868'RECOVERY NOTE BY US POWER SQUADRON 1995
 JU3868'RECOVERED IN GOOD CONDITION.
 JU3868
 JU3868                          STATION RECOVERY (2008)
 JU3868
 JU3868'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2008 (SGC)
 JU3868'RECOVERED BY STEPHENS ENVIRONMENTAL CONSULTING INC. (SECI)
 JU3868'HOME OWNER APPRISED OF MARKER SIGNIFICANCE AT TIME OF RECOVERY
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3872 ***********************************************************************
 JU3872  DESIGNATION -  GRAYS HILL 2
 JU3872  PID         -  JU3872
 JU3872  STATE/COUNTY-  MD/CECIL
 JU3872  COUNTRY     -  US
 JU3872  USGS QUAD   -  ELKTON (2016)
 JU3872
 JU3872                         *CURRENT SURVEY CONTROL
 JU3872  ______________________________________________________________________
 JU3872* NAD 83(1991) POSITION- 39 36 48.12950(N) 075 47 49.48866(W)   ADJUSTED
 JU3872* NAVD 88 ORTHO HEIGHT -    80.5   (meters)      264.    (feet) VERTCON3
 JU3872  ______________________________________________________________________
 JU3872  GEOID HEIGHT    -        -33.105 (meters)                     GEOID18
 JU3872  LAPLACE CORR    -          1.67  (seconds)                    DEFLEC18
 JU3872  HORZ ORDER      -  SECOND
 JU3872
 JU3872.The horizontal coordinates were established by classical geodetic methods
 JU3872.and adjusted by the National Geodetic Survey in January 1992.
 JU3872
 JU3872.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3872.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3872
 JU3872.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3872.GEOID18 height accuracy estimate available here.
 JU3872
 JU3872.Click photographs - Photos may exist for this station.
 JU3872
 JU3872.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3872
 JU3872. The following values were computed from the NAD 83(1991) position.
 JU3872
 JU3872;                    North         East     Units Scale Factor Converg.
 JU3872;SPC MD       -   216,782.728   503,299.338   MT  1.00003266   +0 45 18.0
 JU3872;SPC MD       -   711,228.00  1,651,241.24   sFT  1.00003266   +0 45 18.0
 JU3872;UTM  18      - 4,385,149.891   431,578.884   MT  0.99965764   -0 30 29.7
 JU3872
 JU3872!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3872!SPC MD       -   0.99999256  x   1.00003266  =   1.00002522
 JU3872!UTM  18      -   0.99999256  x   0.99965764  =   0.99965020
 JU3872
 JU3872:                Primary Azimuth Mark                     Grid Az
 JU3872:SPC MD       -  GRAYS HILL 2 AZ MK                       058 55 02.4
 JU3872:UTM  18      -  GRAYS HILL 2 AZ MK                       060 10 50.1
 JU3872
 JU3872_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3157885149(NAD 83)
 JU3872
 JU3872|---------------------------------------------------------------------|
 JU3872| PID    Reference Object                     Distance      Geod. Az  |
 JU3872|                                                           dddmmss.s |
 JU3872| JU3831 NEWARK E I DUPONT STINE LAB TK      APPROX. 5.4 KM 0100458.3 |
 JU3872| CB2024 GRAYS HILL 2 RM 1                    27.260 METERS 05857     |
 JU3872| CB2023 GRAYS HILL 2 AZ MK                                 0594020.4 |
 JU3872| CB2025 GRAYS HILL 2 RM 2                    22.579 METERS 17155     |
 JU3872| JU3954 NORTH EAST MICROWAVE TOWER          APPROX.12.8 KM 2431631.2 |
 JU3872| JU3868 GRAYS HILL                           29.655 METERS 24356     |
 JU3872| JU3871 ELKTON BRICK STACK                  APPROX. 3.4 KM 2513137.7 |
 JU3872| JU3861 ELKTON PRESBYTERIAN CH SPIRE        APPROX. 2.5 KM 2600824.5 |
 JU3872| JU3873 ELKTON MARTIN DWYER WATER TANK      APPROX. 4.4 KM 2732218.5 |
 JU3872| JU3874 ELKTON THE ELKTON CO W TANK         APPROX. 5.0 KM 2775721.5 |
 JU3872| JU3876 ELKTON THE ELKTON CO E TANK         APPROX. 4.7 KM 2790532.1 |
 JU3872|---------------------------------------------------------------------|
 JU3872
 JU3872                          SUPERSEDED SURVEY CONTROL
 JU3872
 JU3872  NAD 83(1986)-  39 36 48.12336(N)    075 47 49.49526(W) AD(       ) 2
 JU3872  NAD 27      -  39 36 47.73340(N)    075 47 50.72980(W) AD(       ) 2
 JU3872  NGVD 29 (03/25/91)   80.8    (m)          265.     (f) VERT ANG       
 JU3872
 JU3872.Superseded values are not recommended for survey control.
 JU3872
 JU3872.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3872.See file dsdata.pdf to determine how the superseded data were derived.
 JU3872
 JU3872_MARKER: DS = TRIANGULATION STATION DISK
 JU3872_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3872_STAMPING: GRAYS HILL 2 1958
 JU3872_MARK LOGO: CGS
 JU3872_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3872+STABILITY: SURFACE MOTION
 JU3872
 JU3872  HISTORY     - Date     Condition        Report By
 JU3872  HISTORY     - 1958     MONUMENTED       CGS
 JU3872  HISTORY     - 1961     GOOD             CGS
 JU3872  HISTORY     - 19951203 GOOD             USPSQD
 JU3872
 JU3872                          STATION DESCRIPTION
 JU3872
 JU3872'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3872'THE STATION IS ABOUT 2 MILES EAST-NORTHEAST OF ELKTON AND ABOUT
 JU3872'1 MILE WEST OF THE MARYLAND-DELAWARE STATE LINE.  IT IS 166 FEET
 JU3872'WEST-SOUTHWEST OF THE NORTHWEST CORNER OF HOUSE, 62 FEET NORTH
 JU3872'OF A STONE FIRE PLACE AND 2 FEET EAST OF WITNESS POST.  THE
 JU3872'MARK IS A STANDARD TRIANGULATION STATION DISK SET IN TOP OF A
 JU3872'12 X 12 INCH CONCRETE POST SET FLUSH AND THE DISK IS STAMPED
 JU3872'GRAYS HILL 2 1958.
 JU3872'
 JU3872'R.M. NO. 1 IS 33 FEET EAST-SOUTHEAST OF THE LARGE TREE AND 88
 JU3872'FEET WEST-NORTHWEST OF THE NORTHWEST CORNER OF HOUSE.  THE MARK
 JU3872'IS A STANDARD REFERENCE MARK DISK SET IN TOP OF A 12 X 12 INCH
 JU3872'CONCRETE POST WHICH IS SET FLUSH AND THE DISK IS STAMPED GRAYS
 JU3872'HILL 2 NO 1 1958.
 JU3872'
 JU3872'R. M. NO. 2 IS 13 FEET SOUTHWEST OF STONE FIRE PLACE.  THE MARK
 JU3872'IS A STANDARD REFERENCE MARK DISK SET IN TOP OF A 12 X 12 INCH
 JU3872'CONCRETE POST WHICH IS SET FLUSH AND THE DISK IS STAMPED GRAYS
 JU3872'HILL 2 NO 2 1958.
 JU3872'
 JU3872'AZIMUTH MARK IS 52-1/2 FEET SOUTHWEST OF CULVERT ABUTMENT, 30
 JU3872'FEET NORTH OF CENTER OF ROAD AND 2 FEET NORTHWEST OF WITNESS
 JU3872'POST.  THE MARK IS A STANDARD AZIMUTH MARK DISK SET IN TOP OF
 JU3872'12 X 12 INCH CONCRETE POST PROJECTING ABOUT 4 INCHES AND THE
 JU3872'DISK IS STAMPED GRAYS HILL 2 1958.
 JU3872'
 JU3872'TO REACH THE STATION FROM THE POST OFFICE IN ELKTON, GO EAST ON
 JU3872'MAIN STREET FOR 2.0 MILES TO A SIDE ROAD LEFT AND PRIVATE
 JU3872'DRIVEWAY ON RIGHT.  TURN RIGHT AND FOLLOW DRIVEWAY FOR 0.5 MILE
 JU3872'TO LARGE HOUSE AND STATION SOUTHWEST OF HOUSE AS DESCRIBED.
 JU3872'
 JU3872'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTHWEST ON
 JU3872'GRAVEL DRIVEWAY FOR 0.5 MILE, TURN RIGHT AND FOLLOW SURFACED ROAD
 JU3872'EASTERLY FOR 2.15 MILE TO THE AZIMUTH MARK ON LEFT AS DESCRIBED.
 JU3872'
 JU3872'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JU3872
 JU3872                          STATION RECOVERY (1961)
 JU3872
 JU3872'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3872'THE STATION MARK, REFERENCE MARKS 1, 2 AND THE AZIMUTH MARK WERE
 JU3872'RECOVERED AS DESCRIBED AND FOUND IN GOOD CONDITION.  THE
 JU3872'DESCRIPTION OF THE TO REACH THE STATION IS ADEQUATE.  A DIFFERENCE
 JU3872'OF MINUS 03 MINUTES, 10.6 SECONDS AND 0.042 METERS, SHORTER
 JU3872'MEASUREMENT WAS NOTED TO REFERENCE MARK 1.  A DIFFERENCE OF MINUS
 JU3872'02 MINUTES, 33.0 SECONDS AND A LONGER MEASUREMENT OF 0.11 METERS
 JU3872'WAS NOTED TO REFERENCE MARK 2 ON THIS DATE.  THESE MEASUREMENTS
 JU3872'WERE DOUBLE CHECKED IN THE FIELD AND ARE BELIEVED TO BE
 JU3872'CORRECT.  THE DISTANCE AND DIRECTION TO THE AZIMUTH MARK
 JU3872'CHECKED WITH THE PREVIOUS DATA.  THE AZIMUTH MARK IS NO LONGER
 JU3872'VISIBLE FROM THE GROUND.
 JU3872'
 JU3872'HEIGHT OF LIGHT ABOVE STATION MARK 30.13 METERS.
 JU3872
 JU3872                          STATION RECOVERY (1995)
 JU3872
 JU3872'RECOVERY NOTE BY US POWER SQUADRON 1995
 JU3872'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5050 ***********************************************************************
 JV5050  DESIGNATION -  GRAYS INN POINT
 JV5050  PID         -  JV5050
 JV5050  STATE/COUNTY-  MD/KENT
 JV5050  COUNTRY     -  US
 JV5050  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5050
 JV5050                         *CURRENT SURVEY CONTROL
 JV5050  ______________________________________________________________________
 JV5050* NAD 83(1991) POSITION- 39 05 23.32124(N) 076 11 37.36779(W)   ADJUSTED
 JV5050* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5050  ______________________________________________________________________
 JV5050  GEOID HEIGHT    -        -33.496 (meters)                     GEOID18
 JV5050  LAPLACE CORR    -         -2.11  (seconds)                    DEFLEC18
 JV5050  HORZ ORDER      -  THIRD
 JV5050
 JV5050.The horizontal coordinates were established by classical geodetic methods
 JV5050.and adjusted by the National Geodetic Survey in January 1992.
 JV5050
 JV5050.The orthometric height was scaled from a topographic map.
 JV5050
 JV5050.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5050.GEOID18 height accuracy estimate available here.
 JV5050
 JV5050.Click photographs - Photos may exist for this station.
 JV5050
 JV5050.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5050
 JV5050. The following values were computed from the NAD 83(1991) position.
 JV5050
 JV5050;                    North         East     Units Scale Factor Converg.
 JV5050;SPC MD       -   158,284.334   469,753.415   MT  0.99995680   +0 30 21.8
 JV5050;SPC MD       -   519,304.52  1,541,182.66   sFT  0.99995680   +0 30 21.8
 JV5050;UTM  18      - 4,327,421.285   396,763.529   MT  0.99973123   -0 45 09.9
 JV5050
 JV5050!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5050!SPC MD       -   1.00000529  x   0.99995680  =   0.99996209
 JV5050!UTM  18      -   1.00000529  x   0.99973123  =   0.99973652
 JV5050
 JV5050:                Primary Azimuth Mark                     Grid Az
 JV5050:SPC MD       -  LORDS GIFT 2                             169 57 34.9
 JV5050:UTM  18      -  LORDS GIFT 2                             171 13 06.6
 JV5050
 JV5050_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9676327421(NAD 83)
 JV5050
 JV5050|---------------------------------------------------------------------|
 JV5050| PID    Reference Object                     Distance      Geod. Az  |
 JV5050|                                                           dddmmss.s |
 JV5050| JV5060 WINDMILL TANK BELOW                 APPROX. 4.5 KM 1513530.5 |
 JV5050| HV5753 LORDS GIFT 2                        APPROX.10.7 KM 1702756.7 |
 JV5050| JV5082 BOGLES WHARF HOUSE FLAG             APPROX. 6.3 KM 1874245.2 |
 JV5050|---------------------------------------------------------------------|
 JV5050
 JV5050                          SUPERSEDED SURVEY CONTROL
 JV5050
 JV5050  NAD 83(1986)-  39 05 23.31584(N)    076 11 37.37958(W) AD(       ) 3
 JV5050  NAD 27      -  39 05 22.91400(N)    076 11 38.53800(W) AD(       ) 3
 JV5050  USSD        -  39 05 23.30400(N)    076 11 38.37400(W) AD(       ) 3
 JV5050
 JV5050.Superseded values are not recommended for survey control.
 JV5050
 JV5050.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5050.See file dsdata.pdf to determine how the superseded data were derived.
 JV5050
 JV5050_MARKER: N = NAIL
 JV5050_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV5050_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5050
 JV5050  HISTORY     - Date     Condition        Report By
 JV5050  HISTORY     - 1896     MONUMENTED       CGS
 JV5050  HISTORY     - 1938     MARK NOT FOUND   CGS
 JV5050
 JV5050                          STATION DESCRIPTION
 JV5050
 JV5050'DESCRIBED BY COAST AND GEODETIC SURVEY 1896 (JAF)
 JV5050'STATION IS ON THE NW SIDE OF CHESTER RIVER, JUST E OF THE MOUTH
 JV5050'OF GRAYS INN CREEK, ON POINT OF SAME NAME.  STATION IS ON SAND
 JV5050'DUNE WHICH IS WELL COVERED WITH VEGETATION AND IS S OF EDGAR
 JV5050'STRONGS PEACH ORCHARD.  A SMALL GROUP OF LARGE CEDAR TREES IS
 JV5050'DUE W OF THE STATION.
 JV5050'
 JV5050'THE STATION IS MARKED BY A NAIL IN A CEMENT-FILLED TILE PIPE.  THE
 JV5050'TOP (6 INCHES BELOW SURFACE) SURROUNDED BY CEMENT BEARING THE
 JV5050'LEGEND U.S.C.S. 1896.  THE UNDERGROUND STATION MARK IS A GLASS
 JV5050'BOTTLE BURIED 3 FEET BELOW THE SURFACE OF THE GROUND WITH THE
 JV5050'NECK UP AND SURROUNDED WITH CEMENT.
 JV5050'
 JV5050'A TRIANGLE CUT IN THE SW SIDE OF THE LARGEST OF A GROUP OF
 JV5050'SMALL OAK TREES BEARS N 44 DEG E FROM THE STATION DISTANT 7
 JV5050'METERS.  A LONE CEDAR TREE NEAR SHORE AT MOUTH OF GRAYS INN
 JV5050'CREEK BEARS N 68 DEG 45 MIN W FROM THE STATION AND A SYCAMORE
 JV5050'TREE TO THE NW OF THE PINE TREE BEARS N 60 DEG 46 MIN W.
 JV5050
 JV5050                          STATION RECOVERY (1938)
 JV5050
 JV5050'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5050'STATION LOST DUE TO EROSION OF RIVER BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW1361 ***********************************************************************
 FW1361  DESIGNATION -  GREAT POINT LIGHT
 FW1361  PID         -  FW1361
 FW1361  STATE/COUNTY-  MD/SOMERSET
 FW1361  COUNTRY     -  US
 FW1361  USGS QUAD   -  GREAT FOX ISLAND (2019)
 FW1361
 FW1361                         *CURRENT SURVEY CONTROL
 FW1361  ______________________________________________________________________
 FW1361* NAD 83(1993) POSITION- 37 57 56.71155(N) 075 54 05.94983(W)   ADJUSTED
 FW1361  ______________________________________________________________________
 FW1361  GEOID HEIGHT    -        -36.075 (meters)                     GEOID18
 FW1361  LAPLACE CORR    -         -1.38  (seconds)                    DEFLEC18
 FW1361  HORZ ORDER      -  THIRD
 FW1361
 FW1361.The horizontal coordinates were established by classical geodetic methods
 FW1361.and adjusted by the National Geodetic Survey in November 1994.
 FW1361
 FW1361.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW1361.GEOID18 height accuracy estimate available here.
 FW1361
 FW1361.Click photographs - Photos may exist for this station.
 FW1361
 FW1361.The Laplace correction was computed from DEFLEC18 derived deflections.
 FW1361
 FW1361. The following values were computed from the NAD 83(1993) position.
 FW1361
 FW1361;                    North         East     Units Scale Factor Converg.
 FW1361;SPC MD       -    33,781.165   496,520.293   MT  1.00007494   +0 41 21.7
 FW1361;SPC MD       -   110,830.37  1,629,000.33   sFT  1.00007494   +0 41 21.7
 FW1361;SPC VA S     - 1,184,306.217 3,728,296.461   MT  0.99999983   +1 34 37.2
 FW1361;SPC VA S     - 3,885,511.31 12,231,919.31   sFT  0.99999983   +1 34 37.2
 FW1361;UTM  18      - 4,202,398.670   420,799.697   MT  0.99967726   -0 33 17.0
 FW1361
 FW1361_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2079902398(NAD 83)
 FW1361
 FW1361                          SUPERSEDED SURVEY CONTROL
 FW1361
 FW1361  NAD 83(1991)-  37 57 56.71277(N)    075 54 05.95489(W) AD(       ) 3
 FW1361  NAD 83(1986)-  37 57 56.71095(N)    075 54 05.97279(W) AD(       ) 3
 FW1361  NAD 27      -  37 57 56.26500(N)    075 54 07.20300(W) AD(       ) 3
 FW1361
 FW1361.Superseded values are not recommended for survey control.
 FW1361
 FW1361.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW1361.See file dsdata.pdf to determine how the superseded data were derived.
 FW1361
 FW1361_MARKER: 14 = NAVIGATION LIGHT
 FW1361
 FW1361  HISTORY     - Date     Condition        Report By
 FW1361  HISTORY     - 1949     FIRST OBSERVED   CGS
 FW1361  HISTORY     - 1961     GOOD             CGS
 FW1361
 FW1361                          STATION DESCRIPTION
 FW1361
 FW1361'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (LFB)
 FW1361'THE LIGHT LIST INDICATES THIS LIGHT HAS NOT BEEN MOVED OR REBUILT
 FW1361'SINCE BEING LOCATED.  IT IS A RED PILE WITH CAGEWORK AT TOP.  LIGHT
 FW1361'NO. 3342 IN THE 1961 LIST OF LIGHTS AND OTHER MARINE AIDS,
 FW1361'VO.1, ATLANTIC COAST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1905 ***********************************************************************
 HU1905  DESIGNATION -  GREAT SHOALS LIGHTHOUSE
 HU1905  PID         -  HU1905
 HU1905  STATE/COUNTY-  MD/WICOMICO
 HU1905  COUNTRY     -  US
 HU1905  USGS QUAD   -  DEAL ISLAND (2016)
 HU1905
 HU1905                         *CURRENT SURVEY CONTROL
 HU1905  ______________________________________________________________________
 HU1905* NAD 83(1991) POSITION- 38 12 51.69403(N) 075 52 45.78602(W)   ADJUSTED
 HU1905* NAVD 88 ORTHO HEIGHT -    11.    (meters)       36.    (feet) SCALED
 HU1905  ______________________________________________________________________
 HU1905  GEOID HEIGHT    -        -35.816 (meters)                     GEOID18
 HU1905  LAPLACE CORR    -         -2.26  (seconds)                    DEFLEC18
 HU1905  HORZ ORDER      -  SECOND
 HU1905
 HU1905.The horizontal coordinates were established by classical geodetic methods
 HU1905.and adjusted by the National Geodetic Survey in January 1992.
 HU1905
 HU1905.The orthometric height was scaled from a topographic map.
 HU1905
 HU1905.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1905.GEOID18 height accuracy estimate available here.
 HU1905
 HU1905.Click photographs - Photos may exist for this station.
 HU1905
 HU1905.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1905
 HU1905. The following values were computed from the NAD 83(1991) position.
 HU1905
 HU1905;                    North         East     Units Scale Factor Converg.
 HU1905;SPC MD       -    61,398.922   498,138.286   MT  1.00001600   +0 42 12.0
 HU1905;SPC MD       -   201,439.63  1,634,308.69   sFT  1.00001600   +0 42 12.0
 HU1905;UTM  18      - 4,229,964.554   423,016.909   MT  0.99967299   -0 32 38.5
 HU1905
 HU1905!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1905!SPC MD       -   1.00000393  x   1.00001600  =   1.00001993
 HU1905!UTM  18      -   1.00000393  x   0.99967299  =   0.99967692
 HU1905
 HU1905:                Primary Azimuth Mark                     Grid Az
 HU1905:SPC MD       -  MONIE 2                                  083 44 26.7
 HU1905:UTM  18      -  MONIE 2                                  084 59 17.2
 HU1905
 HU1905_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2301629964(NAD 83)
 HU1905
 HU1905|---------------------------------------------------------------------|
 HU1905| PID    Reference Object                     Distance      Geod. Az  |
 HU1905|                                                           dddmmss.s |
 HU1905| HU1863 MONIE 2                             APPROX. 3.7 KM 0842638.7 |
 HU1905|---------------------------------------------------------------------|
 HU1905
 HU1905                          SUPERSEDED SURVEY CONTROL
 HU1905
 HU1905  NAD 83(1986)-  38 12 51.69344(N)    075 52 45.80772(W) AD(       ) 2
 HU1905  NAD 27      -  38 12 51.25100(N)    075 52 47.04000(W) AD(       ) 2
 HU1905  USSD        -  38 12 51.62600(N)    075 52 46.78300(W) AD(       ) 3
 HU1905
 HU1905.Superseded values are not recommended for survey control.
 HU1905
 HU1905.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1905.See file dsdata.pdf to determine how the superseded data were derived.
 HU1905
 HU1905_MARKER: 13 = LIGHTHOUSE
 HU1905
 HU1905  HISTORY     - Date     Condition        Report By
 HU1905  HISTORY     - 1901     FIRST OBSERVED   CGS
 HU1905  HISTORY     - 1932     GOOD             CGS
 HU1905  HISTORY     - 1942     GOOD             CGS
 HU1905  HISTORY     - 1961     GOOD             CGS
 HU1905
 HU1905                          STATION DESCRIPTION
 HU1905
 HU1905'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1905'THIS STATION WAS RECOVERED AND USED AS A SECONDARY POINT.
 HU1905
 HU1905                          STATION RECOVERY (1942)
 HU1905
 HU1905'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1905'THE LIGHTHOUSE MARKING THE SOUTHERN TIP OF GREAT SHOAL IN THE
 HU1905'WICOMICO RIVER.  THE POINT SIGHTED ON IS NOT KNOWN, BUT IT MAY BE
 HU1905'ASSUMED THAT THE STATION IS INTACT AS THE LIGHTHOUSE HAS NOT BEEN
 HU1905'CHANGED SINCE ITS CONSTRUCTION.
 HU1905
 HU1905                          STATION RECOVERY (1961)
 HU1905
 HU1905'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HU1905'THE STATION WAS RECOVERED IN GOOD CONDITION THE 1942 DESCRIPTION BY
 HU1905'W.D.P. IS ADEQUATE AND COMPLETE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6213 ***********************************************************************
 HV6213  DESIGNATION -  GREEK
 HV6213  PID         -  HV6213
 HV6213  STATE/COUNTY-  MD/QUEEN ANNES
 HV6213  COUNTRY     -  US
 HV6213  USGS QUAD   -  KENT ISLAND (2016)
 HV6213
 HV6213                         *CURRENT SURVEY CONTROL
 HV6213  ______________________________________________________________________
 HV6213* NAD 83(1991) POSITION- 38 56 25.27393(N) 076 18 20.24771(W)   ADJUSTED
 HV6213* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6213  ______________________________________________________________________
 HV6213  GEOID HEIGHT    -        -33.706 (meters)                     GEOID18
 HV6213  LAPLACE CORR    -         -3.66  (seconds)                    DEFLEC18
 HV6213  HORZ ORDER      -  THIRD
 HV6213
 HV6213.The horizontal coordinates were established by classical geodetic methods
 HV6213.and adjusted by the National Geodetic Survey in January 1992.
 HV6213
 HV6213.The orthometric height was scaled from a topographic map.
 HV6213
 HV6213.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6213.GEOID18 height accuracy estimate available here.
 HV6213
 HV6213.Click photographs - Photos may exist for this station.
 HV6213
 HV6213.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6213
 HV6213. The following values were computed from the NAD 83(1991) position.
 HV6213
 HV6213;                    North         East     Units Scale Factor Converg.
 HV6213;SPC MD       -   141,613.867   460,198.172   MT  0.99995048   +0 26 08.9
 HV6213;SPC MD       -   464,611.50  1,509,833.50   sFT  0.99995048   +0 26 08.9
 HV6213;UTM  18      - 4,310,967.999   386,846.759   MT  0.99975766   -0 49 14.5
 HV6213
 HV6213!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6213!SPC MD       -   1.00000517  x   0.99995048  =   0.99995565
 HV6213!UTM  18      -   1.00000517  x   0.99975766  =   0.99976283
 HV6213
 HV6213:                Primary Azimuth Mark                     Grid Az
 HV6213:SPC MD       -  TOM                                      198 05 54.1
 HV6213:UTM  18      -  TOM                                      199 21 17.5
 HV6213
 HV6213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8684610967(NAD 83)
 HV6213
 HV6213|---------------------------------------------------------------------|
 HV6213| PID    Reference Object                     Distance      Geod. Az  |
 HV6213|                                                           dddmmss.s |
 HV6213| HV6192 TOM                                 APPROX. 1.0 KM 1983203.0 |
 HV6213|---------------------------------------------------------------------|
 HV6213
 HV6213                          SUPERSEDED SURVEY CONTROL
 HV6213
 HV6213  NAD 83(1986)-  38 56 25.26982(N)    076 18 20.26002(W) AD(       ) 3
 HV6213  NAD 27      -  38 56 24.85900(N)    076 18 21.45400(W) AD(       ) 3
 HV6213  USSD        -  38 56 25.25400(N)    076 18 21.24500(W) AD(       ) 3
 HV6213
 HV6213.Superseded values are not recommended for survey control.
 HV6213
 HV6213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6213.See file dsdata.pdf to determine how the superseded data were derived.
 HV6213
 HV6213_MARKER: U = CONCRETE POST
 HV6213_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6213_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6213_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6213
 HV6213  HISTORY     - Date     Condition        Report By
 HV6213  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6213  HISTORY     - 1934     SEE DESCRIPTION  CGS
 HV6213  HISTORY     - 1940     POOR             CGS
 HV6213  HISTORY     - 1961     POOR             CGS
 HV6213  HISTORY     - 1974     POOR             MDDNR
 HV6213  HISTORY     - 1975     SEE DESCRIPTION  MDDNR
 HV6213
 HV6213                          STATION DESCRIPTION
 HV6213
 HV6213'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6213'STATION IS ON THE EASTERN SHORE OF COX CREEK, ON POINT ABOUT
 HV6213'2-3/4 MILES N OF EASTERN BAY AND 1/2 MILE E OF ENTRANCE TO
 HV6213'WAREHOUSE CREEK, ON A MARSH POINT ABOUT 1 FOOT ABOVE HIGH WATER,
 HV6213'60 YARDS SW OF EXTREME END OF POINT, AND 125 YARDS E OF A SMALL
 HV6213'MARSH ISLAND.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE
 HV6213'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6213'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV6213'4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK
 HV6213'IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH
 HV6213'DRAINTILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF
 HV6213'THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV6213'POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY OF SMALL HOUSE, 5/8
 HV6213'MILE, S 20 DEG 14 MIN W.  S CHIMNEY OF HOUSE, 1 MILE, S 59 DEG 05 MIN
 HV6213'W.  S CHIMNEY OF HOUSE 7/8 MILE, S 86 DEG 42 MIN W.  E CHIMNEY OF
 HV6213'HOUSE, 1-1/2 MILES, N 37 DEG 13 MIN W.  S GABLE OF BARN, 2
 HV6213'1/4 MILES, N 25 DEG 31 MIN W.  E CHIMNEY OF HOUSE, 1-1/4 MILES, N 6
 HV6213'DEG 13 MIN W.  E CHIMNEY OF HOUSE, 5/8 MILE, N 12 DEG 24 MIN E.
 HV6213'N CHIMNEY OF HOUSE, 1/4 MILE, N 39 DEG 36 MIN E.  CHIMNEY OF
 HV6213'HOUSE, 1/4 MILE, N 88 DEG 07 MIN E.  CUPOLA OF BARN,
 HV6213'3/4 MILE, S 55 DEG 42 MIN E.
 HV6213
 HV6213                          STATION RECOVERY (1934)
 HV6213
 HV6213'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 HV6213'RECOVERED.  STATION IS ON MARSHY POINT ABOUT 24 METERS NW OF
 HV6213'SHORE, 30 METERS SW OF SHORE AND 33 METERS E OF SHORE.  MARKER IS
 HV6213'M.S.F.C. MONUMENT AND IN POOR CONDITION.  TOP OFF BUT WAS REPLACED.
 HV6213
 HV6213                          STATION RECOVERY (1940)
 HV6213
 HV6213'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6213'STATION MARK RECOVERED IN POOR CONDITION.  TOP IS COMPLETELY
 HV6213'DISINTEGRATED BUT MONUMENT IS APPARENTLY UNMOVED.
 HV6213'
 HV6213'STATION MARK IS LOCATED ON THE EASTERN SHORE OF COX CREEK, ON
 HV6213'POINT ABOUT 2-3/4 MILES N OF EASTERN BAY AND 1/2 MILE E OF
 HV6213'ENTRANCE TO WAREHOUSE CREEK, ON A MARSH POINT ON SOUTHERN SIDE
 HV6213'OF ENTRANCE TO A COVE, 26 YARDS NW OF SHORE, 33 YARDS SW OF
 HV6213'SHORE AND 36 YARDS E OF SHORE.
 HV6213'
 HV6213'RECOMMEND THAT NEW C. AND G.S. MARK BE INSTALLED.
 HV6213
 HV6213                          STATION RECOVERY (1961)
 HV6213
 HV6213'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6213'STATION RECOVERED WITH THE TOP BROKEN OFF LEVEL WITH THE
 HV6213'MARSH.  THE DESCRIPTION BY L.W.S. IN 1940 IS ADEQUATE WITH THE
 HV6213'FOLLOWING ADDITION--STATION IS NOW 40 FT. SE OF SHORE.  A 2X6
 HV6213'STAKE WAS PLACED ON THE E SIDE OF THE MONUMENT AND PROJECTS 3 FT.
 HV6213
 HV6213                          STATION RECOVERY (1974)
 HV6213
 HV6213'RECOVERY NOTE BY MD DEPT OF NAT RES 1974
 HV6213'STATION RECOVERED IN FAIR CONDITION WITH TOP BROKEN OFF 3 INCHES
 HV6213'BELOW SURFACE OF MARSH, 9 FEET E OF SE CORNER OF DUCK BLIND,
 HV6213'60 FEET NE OF SHORE ON RANGE WITH COX CREEK LIGHT 4.  WITNESS
 HV6213'POST SET ON RANGE WITH STATION AND COX CREEK LIGHT 4.  STATION IS
 HV6213'27 FEET SW OF SHORE AND ABOUT 35 FEET SE OF EXTREME POINT.  2 X 6
 HV6213'STAKE NO LONGER EXISTS.  NEW SURFACE MARK NEEDED.
 HV6213
 HV6213                          STATION RECOVERY (1975)
 HV6213
 HV6213'RECOVERY NOTE BY MD DEPT OF NAT RES 1975
 HV6213'A NEW SURFACE MARK WAS SET, REMAINS OF OLD MSFC-USCS MONUMENT
 HV6213'REMOVED AND 2 IN TILE PIPE SUB-SURFACE MARK RECOVERED
 HV6213'2.2 FT. BELOW SURFACE OF MARSH.  NEW SURFACE MONUMENT CENTERED
 HV6213'OVER 2 IN TILE AND BRASS STATE OF MARYLAND SURVEY DISK
 HV6213'PLUMBED OVER SUB-SURFACE TILE.  NEW MONUMENT 2 FT. LONG AND
 HV6213'10 IN IN DIAMETER SET FLUSH WITH SURFACE OF MARSH.  MONUMENT
 HV6213'SET .2 FT. ABOVE SUB-SURFACE MARK.  MARK STAMPED GREEK 1909
 HV6213'USCS MSFC
 HV6213'
 HV6213'WITNESS POST AND SIGN SET ON RANGE WITH COX CREEK LIGHT 4,
 HV6213'8.2 FT. NELY OF STATION.  STATION IS LOCATED ON MARSH POINT
 HV6213'ON ELY SIDE OF COX CREEK OPPOSITE THE ENTRANCE TO WAREHOUSE
 HV6213'CREEK, 9.5 FT. SLY OF SW CORNER OF DUCKBLIND 85 FT. ELY OF POINT
 HV6213'OF LAND, 37.5 FT. NWLY OF POINT OF TALL MARSH GRASS, 207.7 FT.
 HV6213'NLY OF LONE PINE TREE, AND 62.5 FT. NELY OF SHORELINE.
 HV6213'
 HV6213'STATION BEST REACHED BY BOAT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1579 ***********************************************************************
 HU1579  DESIGNATION -  GREEN
 HU1579  PID         -  HU1579
 HU1579  STATE/COUNTY-  MD/WORCESTER
 HU1579  COUNTRY     -  US
 HU1579  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1579
 HU1579                         *CURRENT SURVEY CONTROL
 HU1579  ______________________________________________________________________
 HU1579* NAD 83(1991) POSITION- 38 13 06.02084(N) 075 08 46.26471(W)   ADJUSTED
 HU1579* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HU1579  ______________________________________________________________________
 HU1579  GEOID HEIGHT    -        -36.189 (meters)                     GEOID18
 HU1579  LAPLACE CORR    -          0.15  (seconds)                    DEFLEC18
 HU1579  HORZ ORDER      -  THIRD
 HU1579
 HU1579.The horizontal coordinates were established by classical geodetic methods
 HU1579.and adjusted by the National Geodetic Survey in January 1992.
 HU1579
 HU1579.The orthometric height was scaled from a topographic map.
 HU1579
 HU1579.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1579.GEOID18 height accuracy estimate available here.
 HU1579
 HU1579.Click photographs - Photos may exist for this station.
 HU1579
 HU1579.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1579
 HU1579. The following values were computed from the NAD 83(1991) position.
 HU1579
 HU1579;                    North         East     Units Scale Factor Converg.
 HU1579;SPC MD       -    62,886.634   562,332.537   MT  1.00001521   +1 09 48.7
 HU1579;SPC MD       -   206,320.57  1,844,919.33   sFT  1.00001521   +1 09 48.7
 HU1579;UTM  18      - 4,230,050.750   487,203.522   MT  0.99960202   -0 05 25.6
 HU1579
 HU1579!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1579!SPC MD       -   1.00000525  x   1.00001521  =   1.00002046
 HU1579!UTM  18      -   1.00000525  x   0.99960202  =   0.99960726
 HU1579
 HU1579:                Primary Azimuth Mark                     Grid Az
 HU1579:SPC MD       -  MUD RM                                   020 19 39.5
 HU1579:UTM  18      -  MUD RM                                   021 34 53.8
 HU1579
 HU1579_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8720330050(NAD 83)
 HU1579
 HU1579|---------------------------------------------------------------------|
 HU1579| PID    Reference Object                     Distance      Geod. Az  |
 HU1579|                                                           dddmmss.s |
 HU1579| HU1593 MUD RM                              APPROX. 2.8 KM 0212928.2 |
 HU1579| DC7334 GREEN RM 1                           11.676 METERS 20356     |
 HU1579| DC7335 GREEN RM 2                           22.548 METERS 29641     |
 HU1579|---------------------------------------------------------------------|
 HU1579
 HU1579                          SUPERSEDED SURVEY CONTROL
 HU1579
 HU1579  NAD 83(1986)-  38 13 06.00568(N)    075 08 46.29904(W) AD(       ) 3
 HU1579  NAD 27      -  38 13 05.58610(N)    075 08 47.61440(W) AD(       ) 3
 HU1579
 HU1579.Superseded values are not recommended for survey control.
 HU1579
 HU1579.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1579.See file dsdata.pdf to determine how the superseded data were derived.
 HU1579
 HU1579_MARKER: DS = TRIANGULATION STATION DISK
 HU1579_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HU1579_STAMPING: GREEN 1933
 HU1579_MARK LOGO: CGS
 HU1579_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1579
 HU1579  HISTORY     - Date     Condition        Report By
 HU1579  HISTORY     - 1933     MONUMENTED       CGS
 HU1579  HISTORY     - 1933     GOOD             CGS
 HU1579  HISTORY     - 1934     GOOD             CGS
 HU1579  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1579  HISTORY     - 1959     SEE DESCRIPTION  CGS
 HU1579  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1579  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU1579
 HU1579                          STATION DESCRIPTION
 HU1579
 HU1579'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (IER)
 HU1579'STATION GREEN IS A STANDARD DISK WITH TWO REFERENCE MARKS,
 HU1579'LOCATED ON A SAND DUNE 149.7 METERS W OF BLAZED POLE ON LINE OF
 HU1579'TELEPHONE POLES, 2 MILES N OF NORTH BEACH COAST GUARD STATION.
 HU1579'
 HU1579'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1579'CONCRETE, IN THE TOP OF A TILE AS DESCRIBED.
 HU1579
 HU1579                          STATION RECOVERY (1933)
 HU1579
 HU1579'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (HO)
 HU1579'STATION GREEN IS LOCATED ON THE NE CORNER OF A SAND DUNE ABOUT
 HU1579'4 FEET HIGH, 1.5 MILES N OF NORTH BEACH COAST GUARD STATION.  THE
 HU1579'STATION MARK WAS PARTIALLY WASHED OUT BY THE STORM OF AUGUST 23,
 HU1579'1933, BUT WAS RE-SET WITHIN PROBABLY 2 INCHES OF THE OLD POSITION.
 HU1579'
 HU1579'THE GENERAL TOPOGRAPHY OF THE BEACH IN THE VICINITY OF THE
 HU1579'STATION WAS GREATLY CHANGED BY THE AUGUST 23, 1933, STORM.  A
 HU1579'LOW FLAT BEACH EXTENDS EASTWARD FROM THE DUNE ON WHICH THE
 HU1579'STATION IS LOCATED, ABOUT 200 METERS TO NORMAL HIGH-WATER
 HU1579'MARK.  THE STORM HIGH-WATER MARK IS AT THE FOOT OF THE DUNE ON
 HU1579'WHICH THE STATION IS LOCATED, SOME 20 METERS E OF THE STATION.
 HU1579'
 HU1579'A SHALLOW SLOUGH EXTENDS FROM SINEPUXENT BAY THROUGH MARSH AND
 HU1579'BRUSH, ENDING AT A POINT ABOUT 100 METERS S OF THE STATION.
 HU1579'
 HU1579'REFERENCE MARK NO.1 WAS FOUND COMPLETELY WASHED OUT AND WAS
 HU1579'RE-SET IN A NEW POSITION, 21.787 METERS (71.48 FEET) FROM STATION.
 HU1579'
 HU1579'REFERENCE MARK NO.2 WAS RECOVERED IN GOOD CONDITION, APPARENTLY
 HU1579'UNDISTURBED, 22.535 METERS (73.93 FEET) FROM STATION.
 HU1579'
 HU1579'ALL MARKS ARE STANDARD DISKS SET IN CONCRETE IN 6-INCH DRAIN
 HU1579'TILE, 30 INCHES LONG.
 HU1579
 HU1579                          STATION RECOVERY (1934)
 HU1579
 HU1579'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1579'STATION AND REFERENCE MARKS RECOVERED IN GOOD CONDITION AS
 HU1579'REESTABLISHED BY ODESSEY IN 1933.  THE DESCRIPTION IS ENTIRELY
 HU1579'ADEQUATE.
 HU1579'
 HU1579'THIS STATION AS ESTABLISHED BY I.E. RITTENBURG IN 1933 WAS
 HU1579'WASHED OUT IN THE AUGUST STORM OF THAT YEAR, AND RE-SET LATER BY
 HU1579'H. ODESSEY PROBABLY WITHIN 2 INCHES OF ITS ORIGINAL LOCATION.  NO
 HU1579'OBSERVATIONS WERE MADE TO CHECK ITS NEW LOCATION AND IT IS
 HU1579'RECOMMENDED THAT THE STATION BE LISTED AS A TOPOGRAPHIC STATION,
 HU1579'DUE TO THE OBVIOUS DOUBT WHICH EXISTS AS TO ITS TRUE POSITION.
 HU1579
 HU1579                          STATION RECOVERY (1942)
 HU1579
 HU1579'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1579'THE STATION WAS THOROUGHLY SEARCHED FOR BUT WAS NOT
 HU1579'RECOVERED.  REMAINS OF AN OBSERVATION TOWER ARE IN EVIDENCE AND
 HU1579'AFTER CONSIDERABLE DIGGING NEITHER THE STATION OR REFERENCE MARKS
 HU1579'COULD BE FOUND.  A CONSIDERABLE AMOUNT OF SAND HAS PILED UP IN
 HU1579'THE AREA AND IT IS BELIEVED TO HAVE BURIED THE STATION AND
 HU1579'REFERENCE MARK.
 HU1579
 HU1579                          STATION RECOVERY (1959)
 HU1579
 HU1579'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (WER)
 HU1579'THE STATION MARK AND REFERENCE MARK NO. 1 WERE SEARCHED FOR BUT
 HU1579'NOT FOUND.  REFERENCE MARK NO. 2 WAS FOUND LYING ON ITS SIDE AT
 HU1579'THE FOOT OF A SAND DUNE.  A NEW TRIANGULATION STATION GREEN 2
 HU1579'WAS ESTABLISHED.
 HU1579
 HU1579                          STATION RECOVERY (1962)
 HU1579
 HU1579'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1579'STATION MARK AND REFERENCE NO. 1 WERE SEARCHED FOR WITHOUT
 HU1579'SUCCESS.  REFERENCE MARK NO. 2 WAS FOUND DESTROYED BY W.E.R. IN
 HU1579'1959.  THE MARKS HAVE EITHER BEEN DESTROYED OR ARE BURIED BENEATH
 HU1579'DRIFTING SAND.
 HU1579
 HU1579                          STATION RECOVERY (2003)
 HU1579
 HU1579'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU1579'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1872 ***********************************************************************
 HU1872  DESIGNATION -  GREEN
 HU1872  PID         -  HU1872
 HU1872  STATE/COUNTY-  MD/SOMERSET
 HU1872  COUNTRY     -  US
 HU1872  USGS QUAD   -  MONIE (2016)
 HU1872
 HU1872                         *CURRENT SURVEY CONTROL
 HU1872  ______________________________________________________________________
 HU1872* NAD 83(1993) POSITION- 38 08 28.69434(N) 075 47 13.45604(W)   ADJUSTED
 HU1872* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1872  ______________________________________________________________________
 HU1872  GEOID HEIGHT    -        -35.983 (meters)                     GEOID18
 HU1872  LAPLACE CORR    -         -1.85  (seconds)                    DEFLEC18
 HU1872  HORZ ORDER      -  THIRD
 HU1872
 HU1872.The horizontal coordinates were established by classical geodetic methods
 HU1872.and adjusted by the National Geodetic Survey in November 1994.
 HU1872
 HU1872.The orthometric height was scaled from a topographic map.
 HU1872
 HU1872.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1872.GEOID18 height accuracy estimate available here.
 HU1872
 HU1872.Click photographs - Photos may exist for this station.
 HU1872
 HU1872.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1872
 HU1872. The following values were computed from the NAD 83(1993) position.
 HU1872
 HU1872;                    North         East     Units Scale Factor Converg.
 HU1872;SPC MD       -    53,393.629   506,329.996   MT  1.00003140   +0 45 40.6
 HU1872;SPC MD       -   175,175.60  1,661,184.33   sFT  1.00003140   +0 45 40.6
 HU1872;UTM  18      - 4,221,785.762   431,029.543   MT  0.99965858   -0 29 10.0
 HU1872
 HU1872!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1872!SPC MD       -   1.00000553  x   1.00003140  =   1.00003693
 HU1872!UTM  18      -   1.00000553  x   0.99965858  =   0.99966411
 HU1872
 HU1872:                Primary Azimuth Mark                     Grid Az
 HU1872:SPC MD       -  UPPER FAIRMOUNT CHURCH SPIRE             198 07 13.5
 HU1872:UTM  18      -  UPPER FAIRMOUNT CHURCH SPIRE             199 22 04.1
 HU1872
 HU1872_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3102921785(NAD 83)
 HU1872
 HU1872|---------------------------------------------------------------------|
 HU1872| PID    Reference Object                     Distance      Geod. Az  |
 HU1872|                                                           dddmmss.s |
 HU1872| HU1881 UPPER FAIRMOUNT CHURCH SPIRE        APPROX. 4.1 KM 1985254.1 |
 HU1872|---------------------------------------------------------------------|
 HU1872
 HU1872                          SUPERSEDED SURVEY CONTROL
 HU1872
 HU1872  NAD 83(1991)-  38 08 28.69128(N)    075 47 13.45501(W) AD(       ) 3
 HU1872  NAD 83(1986)-  38 08 28.69120(N)    075 47 13.48151(W) AD(       ) 3
 HU1872  NAD 27      -  38 08 28.24200(N)    075 47 14.70500(W) AD(       ) 3
 HU1872  USSD        -  38 08 28.60100(N)    075 47 14.44700(W) AD(       ) 3
 HU1872
 HU1872.Superseded values are not recommended for survey control.
 HU1872
 HU1872.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1872.See file dsdata.pdf to determine how the superseded data were derived.
 HU1872
 HU1872_MARKER: H = DRILL HOLE
 HU1872_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1872_STAMPING: M.S.F.C.  U.S.C.S.
 HU1872_MARK LOGO: MDSFC
 HU1872_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1872+STABILITY: SURFACE MOTION
 HU1872
 HU1872  HISTORY     - Date     Condition        Report By
 HU1872  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1872  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HU1872
 HU1872                          STATION DESCRIPTION
 HU1872
 HU1872'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1872'STATION IS ON THE EASTERN SHORE OF THE UPPER PART OF MANOKIN
 HU1872'RIVER, ABOUT 1/4 MILE N OF ENTRANCE OF BACK CREEK, ON GRASSY
 HU1872'LAND ABOUT 10 YARDS E OF A SANDY BEACH ADJOINING A MARSH POINT,
 HU1872'AND ABOUT 3 YARDS N OF CURVE IN ROAD.  TWO SMALL LOCUST TREES
 HU1872'STAND ABOUT 3 YARDS DISTANT, ONE TO THE NW AND THE OTHER TO THE
 HU1872'E OF THE STATION.  STATION MARK IS A HOLE IN THE CENTER OF THE
 HU1872'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HU1872'8-INCH SQUARE CONCRETE POST 2 FEET LONG WITH TOP PROJECTING
 HU1872'ABOUT 4 INCHES.  THE LETTERS M.S.F.S. AND U.S.C.S. ARE
 HU1872'COUNTER-SUNK IN TOP OF POST.  DISTANCES AND BEARINGS TO
 HU1872'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE
 HU1872'IN 10-INCH CEDAR TREE, 8.90 METERS (29.20 FEET), S 01 DEG 02
 HU1872'MIN W.  LEFT CHIMNEY OF WHITE HOUSE, 3/4 MILE, S 26 DEG 52 MIN W.
 HU1872'WILLIAM MUIRS STORE CHIMNEY, 1-3/4 MILES, N 76 DEG 12 MIN W.
 HU1872'NAIL IN BLAZE IN 3-INCH TREE, 3.65 METERS (11.98 FEET),
 HU1872'N 54 DEG 06 MIN W.  CHIMNEY ON WHITE HOUSE, 3/4 MILE, N 34 DEG
 HU1872'56 MIN W.  TANGENT TO POINT OF LAND, 100 YARDS, N 19 DEG 49 MIN W.
 HU1872
 HU1872                          STATION RECOVERY (1942)
 HU1872
 HU1872'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1872'THIS STATION (AN 8-INCH SQUARE CONCRETE POST, 2 FEET LONG, WITH
 HU1872'A HOLE IN THE CENTER OF THE TOP OF THE POST, AND WITH THE LETTERS
 HU1872'M.S.F.S. AND U.S.C.S. COUNTERSUNK IN THE TOP OF THE POST) WAS
 HU1872'FOUND LYING ON ITS SIDE ON A SMALL SAND BEACH BY THE WATERS EDGE.
 HU1872'
 HU1872'THE STATION HAS BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1930 ***********************************************************************
 HU1930  DESIGNATION -  GREEN
 HU1930  PID         -  HU1930
 HU1930  STATE/COUNTY-  MD/WICOMICO
 HU1930  COUNTRY     -  US
 HU1930  USGS QUAD   -  WETIPQUIN (2016)
 HU1930
 HU1930                         *CURRENT SURVEY CONTROL
 HU1930  ______________________________________________________________________
 HU1930* NAD 83(1991) POSITION- 38 18 52.76271(N) 075 46 53.74629(W)   ADJUSTED
 HU1930* NAVD 88 ORTHO HEIGHT -     3.524 (meters)       11.56  (feet) ADJUSTED
 HU1930  ______________________________________________________________________
 HU1930  GEOID HEIGHT    -        -35.778 (meters)                     GEOID18
 HU1930  LAPLACE CORR    -         -1.37  (seconds)                    DEFLEC18
 HU1930  DYNAMIC HEIGHT  -          3.522 (meters)       11.56  (feet) COMP
 HU1930  MODELED GRAVITY -    979,998.0   (mgal)                       NAVD 88
 HU1930
 HU1930  HORZ ORDER      -  SECOND
 HU1930  VERT ORDER      -  SECOND    CLASS I
 HU1930
 HU1930.The horizontal coordinates were established by classical geodetic methods
 HU1930.and adjusted by the National Geodetic Survey in January 1992.
 HU1930
 HU1930.The orthometric height was determined by differential leveling and
 HU1930.adjusted by the NATIONAL GEODETIC SURVEY
 HU1930.in June 1991.
 HU1930
 HU1930.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1930.GEOID18 height accuracy estimate available here.
 HU1930
 HU1930.Click photographs - Photos may exist for this station.
 HU1930
 HU1930.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1930
 HU1930.The dynamic height is computed by dividing the NAVD 88
 HU1930.geopotential number by the normal gravity value computed on the
 HU1930.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1930.degrees latitude (g = 980.6199 gals.).
 HU1930
 HU1930.The modeled gravity was interpolated from observed gravity values.
 HU1930
 HU1930. The following values were computed from the NAD 83(1991) position.
 HU1930
 HU1930;                    North         East     Units Scale Factor Converg.
 HU1930;SPC MD       -    72,640.816   506,553.103   MT  0.99999748   +0 45 53.0
 HU1930;SPC MD       -   238,322.41  1,661,916.31   sFT  0.99999748   +0 45 53.0
 HU1930;UTM  18      - 4,241,016.679   431,671.691   MT  0.99965750   -0 29 04.5
 HU1930
 HU1930!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1930!SPC MD       -   1.00000506  x   0.99999748  =   1.00000254
 HU1930!UTM  18      -   1.00000506  x   0.99965750  =   0.99966256
 HU1930
 HU1930:                Primary Azimuth Mark                     Grid Az
 HU1930:SPC MD       -  GOLF RESET                               048 01 12.3
 HU1930:UTM  18      -  GOLF RESET                               049 16 09.8
 HU1930
 HU1930_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3167141016(NAD 83)
 HU1930
 HU1930|---------------------------------------------------------------------|
 HU1930| PID    Reference Object                     Distance      Geod. Az  |
 HU1930|                                                           dddmmss.s |
 HU1930| CS6542 GREEN RM 3                           51.243 METERS 00411     |
 HU1930| HU2172 GOLF RESET                          APPROX. 5.0 KM 0484705.3 |
 HU1930| HU2177 GREEN AZ MK 2                       APPROX. 0.5 KM 1412721.5 |
 HU1930| DC7333 GREEN RM 2                           35.671 METERS 25615     |
 HU1930| DC7332 GREEN RM 1                                         34439     |
 HU1930|---------------------------------------------------------------------|
 HU1930
 HU1930                          SUPERSEDED SURVEY CONTROL
 HU1930
 HU1930  NAD 83(1986)-  38 18 52.75887(N)    075 46 53.76884(W) AD(       ) 2
 HU1930  NAD 27      -  38 18 52.33300(N)    075 46 55.02600(W) AD(       ) 2
 HU1930  NGVD 29               3.78   (m)           12.4    (f) LEVELING    3  
 HU1930  NGVD 29 (06/12/91)    3.778  (m)           12.40   (f) ADJUSTED    2 1
 HU1930
 HU1930.Superseded values are not recommended for survey control.
 HU1930
 HU1930.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1930.See file dsdata.pdf to determine how the superseded data were derived.
 HU1930
 HU1930_MARKER: DS = TRIANGULATION STATION DISK
 HU1930_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1930_STAMPING: GREEN 1932
 HU1930_MARK LOGO: CGS
 HU1930_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1930_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1930+STABILITY: SURFACE MOTION
 HU1930
 HU1930  HISTORY     - Date     Condition        Report By
 HU1930  HISTORY     - 1932     MONUMENTED       CGS
 HU1930  HISTORY     - 1932     GOOD             CGS
 HU1930  HISTORY     - 1942     GOOD             CGS
 HU1930  HISTORY     - 1964     GOOD             MDDT
 HU1930  HISTORY     - 1987     GOOD             NGS
 HU1930  HISTORY     - 19900308 GOOD             NGS
 HU1930
 HU1930                          STATION DESCRIPTION
 HU1930
 HU1930'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1930'STATION IS ABOUT 6.5 MILES FROM SALISBURY, W ON SALISBURY-NANTICOKE
 HU1930'ROAD TO CONCRETE ROAD LEADING S TO WHITE HAVEN.  THENCE ABOUT 4
 HU1930'MILES ALONG THIS ROAD TO POINT WHERE ROAD ENDS AT JUNCTION WITH
 HU1930'THE TYASKIN ROAD, WHICH VICINITY IS KNOWN AS GREEN HILL.  THENCE
 HU1930'TO THE RIGHT AND IN A NORTHERLY DIRECTION ALONG THIS ROAD FOR
 HU1930'ABOUT 350 YARDS TO A POINT OPPOSITE PINE WOODS ON THE RIGHT AND
 HU1930'A SMALL CULTIVATED STRIP ALONG RIDGE ON THE LEFT.  THENCE 95
 HU1930'FEET ACROSS CULTIVATED STRIP TO TOP OF RIDGE AND THE
 HU1930'STATION.  STATION IS ON LAND OWNED BY SNEAD DORMAN, AND IS
 HU1930'115 FEET FROM NEAR CORNER OF HOUSE TO N, AND 293 FEET FROM
 HU1930'NEAR CORNER OF HOUSE TO S.  MR. C.C. LAYFIELD OWNS HOUSE,
 HU1930'STORE AND FILLING STATION AT ROAD INTERSECTION.
 HU1930'
 HU1930'THERE IS NO SURFACE MARK AT THIS STATION.
 HU1930'
 HU1930'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1930'CONCRETE, AS DESCRIBED IN NOTES 7A AND 11A.
 HU1930'
 HU1930'REFERENCE MARK NO.1 IS ABOUT 1 METER FROM THE SE CORNER OF THE
 HU1930'FARMHOUSE.
 HU1930'
 HU1930'REFERENCE MARK NO.2 IS IN EDGE OF WOODS DIRECTLY BACK FROM ROAD.
 HU1930'
 HU1930'HEIGHT OF SIGNAL ABOVE STATION MARK - 26.9 METERS.
 HU1930
 HU1930                          STATION RECOVERY (1932)
 HU1930
 HU1930'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932
 HU1930'RECOVERED IN GOOD CONDITION.
 HU1930
 HU1930                          STATION RECOVERY (1942)
 HU1930
 HU1930'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1930'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE ORIGINAL
 HU1930'DESCRIPTION--
 HU1930'
 HU1930'(1) DELETE PINE WOODS ON THE RIGHT SINCE THESE NO LONGER EXIST DUE TO
 HU1930'CUTTING OPERATIONS.
 HU1930'
 HU1930'(2) THE DISTANCE FROM THE ROAD TO THE STATION ACROSS THE CULTIVATED
 HU1930'FIELD WAS FOUND TO BE 105 FEET, NOT 95 FEET.
 HU1930'
 HU1930'(3) THE DISTANCE TO S FROM THE NEAR CORNER OF THE DORMAN DWELLING IS
 HU1930'203 FEET INSTEAD OF 115 FEET.
 HU1930'
 HU1930'(4) THE DISTANCE FROM NEAR CORNER OF BENJAMIN PERRY DWELLING IS 325
 HU1930'FEET INSTEAD OF 293 FEET.
 HU1930'
 HU1930'(5) THE DISTANCE FROM THE STATION TO REFERENCE MARK NO.2 IS 117.04
 HU1930'FEET INSTEAD OF 117.115 FEET.
 HU1930'
 HU1930'THE STATION IS LOCATED NEAR A SMALL SETTLEMENT KNOWN AS GREEN HILL,
 HU1930'WHICH IS ABOUT 3 MILES E OF WHITEHAVEN.  IT IS LOCATED ABOUT 1/4 MILE
 HU1930'N OF THE INTERSECTION OF THE WHITEHAVEN-SALISBURY ROAD AND THE ROAD
 HU1930'LEADING TO NANTICOKE.  THE STATION IS ON THE LAND OWNED BY SNEAD
 HU1930'DORMAN, 105 FEET W OF THE ROAD TO GREEN HILL, 203 FEET S OF THE DORMAN
 HU1930'DWELLING, 325 FEET N OF THE HOUSE OWNED BY BENJAMIN PERRY AND 115 FEET
 HU1930'E OF THE WOODS WHICH ADJOIN THE CULTIVATED FIELD IN WHICH THE STATION
 HU1930'IS SITUATED.
 HU1930'
 HU1930'THE STATION IS MARKED BY A BRONZE DISK, STAMPED GREEN 1932, SET IN THE
 HU1930'TOP OF AN 11-INCH SQUARE CONCRETE MONUMENT, WHICH IS 1.3 FEET BELOW
 HU1930'THE SURFACE OF THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1930'
 HU1930'REFERENCE MARK NO.1 IS DESTROYED.  IT WAS FOUND LYING ON THE GROUND
 HU1930'HAVING BEEN REMOVED FROM ITS ORIGINAL POSITION.
 HU1930'
 HU1930'REFERENCE MARK NO.2 IS 117.04 FEET W OF THE STATION, 220 FEET W OF THE
 HU1930'CENTER LINE OF THE ROAD TO GREEN HILL, 237 FEET SE OF THE SW CORNER OF
 HU1930'THE DORMAN DWELLING, AND 285 FEET NW OF A 20-INCH CEDAR TREE.  THE
 HU1930'MARK IS A BRONZE DISK, WITH THE ARROW POINTING TOWARD THE STATION,
 HU1930'STAMPED GREEN 1932 - NO.2, SET IN THE TOP OF AN 11-INCH SQUARE
 HU1930'CONCRETE MONUMENT, WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  THE
 HU1930'MARK IS IN GOOD CONDITION.
 HU1930
 HU1930                          STATION RECOVERY (1964)
 HU1930
 HU1930'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1964
 HU1930'STATION AND R.M. 2 WERE FOUND IN GOOD CONDITION.
 HU1930'
 HU1930'STATION IS LOCATED NEAR GREEN HILL, WHICH IS ABOUT 3 MILES N. OF
 HU1930'WHITEHAVEN.  105.0 FT. S. W. OF THE CENTERLINE OF GREEN HILL ROAD,
 HU1930'167.0 FT. S. OF C AND P BS POLE 80 F, 183.6 FT. S. OF THE S.W. CORNER
 HU1930'OF THE 1 STORY FRAME HOUSE, AND 109.0 FT. E. OF A 14 IN BLAZED PINE
 HU1930'TREE.  A STANDARD USC AND GS DISK SET IN CONCRETE 12 IN BELOW SURFACE
 HU1930'OF THE GROUND AND STAMPED GREEN 1932.
 HU1930'
 HU1930'REFERENCE MARK NO. 2 IS 117.04 FT. W. OF THE STATION, 220 FT. W. OF
 HU1930'THE CENTERLINE OF GREEN HILL ROAD, AND 8.0 FT. W-S.W., OF A 14 IN
 HU1930'BLAZED PINE TREE.  A STANDARD USC AND GS DISK SET IN THE TOP OF A 11
 HU1930'IN SQUARE SQUARE CONCRETE POST WITH AN ARROW POINTING TOWARD THE
 HU1930'STATION, STAMPED GREEN 1932 NO. 2.
 HU1930'
 HU1930'TO REACH THE STATION FROM WHITEHAVEN PROCEED N ALONG MD. 352
 HU1930'(WHITEHAVEN ROAD) FOR 3.2 MILES TO A CROSS ROAD, GREEN HILL ROAD ON
 HU1930'THE LEFT, TURN LEFT AND PROCEED 0.25 MILE N. W. ALONG GREEN HILL ROAD
 HU1930'TO THE STATION ON THE LEFT AS DESCRIBED.
 HU1930
 HU1930                          STATION RECOVERY (1987)
 HU1930
 HU1930'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU1930'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES NOTED BELOW -- THE
 HU1930'STATION MARK AND REFERENCE MARK TWO WERE RECOVERED AND FOUND IN GOOD
 HU1930'CONDITION. REFERENCE MARK ONE WAS NOT FOUND AND BELIEVED DESTROYED BY
 HU1930'ROAD CONSTRUCTION. A NEW AZIMUTH MARK TWO ALONG WITH A NEW REFERENCE
 HU1930'MARK THREE WERE ESTABLISHED. THE DISTANCE AND DIRECTION TO REFERENCE
 HU1930'MARK TWO WERE WITHIN CLOSE AGREEMENT WITH MOST RECENT INFORMATION
 HU1930'AVAILABLE. A COMPLETE NEW DESCRIPTION FOLLOWS.
 HU1930'
 HU1930'THE STATION IS LOCATED ABOUT 10.5 KM (6.5 MI) WEST OF SALISBURY, 4.8
 HU1930'KM (3 MI) NORTH OF WHITEHAVEN AND NEAR THE SMALL VILLAGE OF GREEN
 HU1930'HILL.  OWNERSHIP--CHESAPEAKE NURSERIES INC., PEMBERTON DIRVE,
 HU1930'SALISBURY, MARYLAND 21801.
 HU1930'
 HU1930'TO REACH THE STATION FROM THE POST OFFICE IN SALISBURY,  GO WEST FOR
 HU1930'2.8 KM (1.75 MI) ON U.S. HIGHWAY 50 TO A SIDE ROAD LEFT.  TURN LEFT
 HU1930'AND GO WEST FOR 10.6 KM (6.6 MI) ON STATE HIGHWAY 349 TO SIDE ROAD
 HU1930'LEFT.  TURN LEFT AND GO SOUTH FOR 7.15 KM (4.45 MI) ON STATE HIGHWAY
 HU1930'352 TO A CROSSROADS.  TURN RIGHT AND GO WEST FOR 0.4 KM (0.25 MI) ON
 HU1930'HEAD OF CREEK ROAD THE STATION ON THE LEFT.
 HU1930'
 HU1930'THE STATION IS A STANDARD NGS DISK STAMPED ---GREEN 1932---, SET INTO
 HU1930'THE TOP OF A SQUARE CONCRETE MONUMENT 30 CM ON SIDE RECESSED 29 CM
 HU1930'BELOW GROUND.  LOCATED 32.3 METERS (105.9 FT) WEST-SOUTHWEST FROM THE
 HU1930'CENTER OF HEAD OF CREEK ROAD, 50.9 METERS (167.1 FT) SOUTH-SOUTHWEST
 HU1930'FROM A POWERLINE POLE NUMBERED 41617 91350, 53.3 METERS (174.9 FT)
 HU1930'NORTHWEST FROM A POWERLINE POLE NUMBERED 41629 91325, 33.2 METERS
 HU1930'(109.0 FT) SOUTHEAST FROM A 18-INCH PINE TREE AND 44.7 METERS
 HU1930'(146.5 FT) SOUTHWEST FROM A 12-INCH PERSIMMONS TREE.
 HU1930'
 HU1930'REFERENCE MARK NO. 2 IS A STANDARD NGS DISK STAMPED
 HU1930'---GREEN 1932 NO 2---, SET INTO THE TOP OF A SQUARE CONCRETE MONUMENT
 HU1930'30 CM ON SIDE FLUSH WITH GROUND.  LOCATED 2.6 METERS (8.6 FT)
 HU1930'WEST-SOUTHWEST FROM A 18-INCH PINE TREE, 5.5 METERS (17.9 FT) NORTH
 HU1930'FROM A 15-INCH PINE TREE, 2.9 METERS (9.4 FT) SOUTHEAST FROM A TWIN
 HU1930'8-INCH MAPLE TREE AND 0.8 METERS (2.6 FT) EAST FROM A CARSONITE
 HU1930'WITNESS POST.  MARK IS 0.65 METERS BELOW THE STATION.
 HU1930'
 HU1930'REFERENCE MARK NO. 3 IS A STANDARD NGS DISK STAMPED
 HU1930'---GREEN 1932 NO 3 1987---, SET INTO THE TOP OF A ROUND CONCRETE
 HU1930'MONUMENT 30 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 8.0 METERS
 HU1930'(26.1 FT) WEST-SOUTHWEST FROM THE CENTER OF HEAD OF ROAD, 0.8 METERS
 HU1930'(2.6 FT) EAST-NORTHEAST FROM A POWERLINE POLE NUMBERED 41617 91350,
 HU1930'1.5 METERS (4.9 FT) WEST-SOUTHWEST FROM A TELEPHONE CABLE MARKER
 HU1930'NUMBERED 19 AND 9.9 METERS (32.4 FT) NORTH-NORTHWEST FROM THE 12-INCH
 HU1930'PERSIMMONS TREE.  MARK IS 0.32 METERS BELOW THE STATION.
 HU1930'
 HU1930'AZIMUTH MARK NO. 2 IS A STANDARD NGS DISK STAMPED
 HU1930'---GREEN 1932 NO 2 1987---, SET INTO THE TOP OF A ROUND CONCRETE
 HU1930'MONUMENT 30 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 5.4 METERS
 HU1930'(17.6 FT) SOUTHWEST FROM THE CENTER OF GREEN CHURCH HILL ROAD, 88.4
 HU1930'METERS (290.0 FT) SOUTHEAST FROM THE CENTER OF STATE HIGHWAY 352, 47.9
 HU1930'METERS (157.1 FT) SOUTHEAST FROM THE SOUTHEAST CORNER OF A TWO STORY
 HU1930'FARM HOUSE, 0.9 METERS (3.1 FT) NORTH FROM A POWERLINE POLE 41718
 HU1930'91202 AND 0.8 METERS (2.5 FT) NORTH FROM A CARSONITE WITNESS POST.  TO
 HU1930'REACH THE AZIMUTH FROM THE STATION, GO SOUTHEAST FOR 0.5 KM (0.3 MI)
 HU1930'ON HEAD OF CREEK ROAD TO THE MARK ON THE RIGHT, JUST BEYOND A
 HU1930'CROSSROADS.  THE UNDERGROUND MARK IS A STANDARD NGS DISK STAMPED
 HU1930'---GREEN 1932 NO 2 1987---, SET INTO AN IRREGULAR MASS OF CONCRETE 1.0
 HU1930'METERS BELOW THE SURFACE.
 HU1930
 HU1930                          STATION RECOVERY (1990)
 HU1930
 HU1930'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990 (RHK)
 HU1930'5.2 KM (3.23 MI) NORTHEASTERLY ALONG WHITEHAVEN ROAD FROM ITS
 HU1930'JUNCTION WITH CHURCH STREET IN WHITEHAVEN, THENCE 0.4 KM (0.25 MI)
 HU1930'WESTERLY ALONG HEAD OF THE CREEK ROAD, 53.3 M (174.87 FT) NORTHWEST
 HU1930'OF UTILITY POLE NUMBER 41629 91325, 50.9 M (166.99 FT) SOUTHWEST OF
 HU1930'UTILITY POLE NUMBER 41617 91350, 35.9 M (117.78 FT) EAST OF A WITNESS
 HU1930'POST, 35.6 M (116.80 FT) EAST OF GREEN REFERENCE MARK 2, 32.3 M
 HU1930'(105.97 FT) WEST OF AND LEVEL WITH THE ROAD CENTER, AND IN A CONCRETE
 HU1930'MONUMENT THAT IS 0.3 M (0.98 FT) BELOW THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5815 ***********************************************************************
 HV5815  DESIGNATION -  GREEN
 HV5815  PID         -  HV5815
 HV5815  STATE/COUNTY-  MD/QUEEN ANNES
 HV5815  COUNTRY     -  US
 HV5815  USGS QUAD   -  QUEENSTOWN (2016)
 HV5815
 HV5815                         *CURRENT SURVEY CONTROL
 HV5815  ______________________________________________________________________
 HV5815* NAD 83(1991) POSITION- 38 53 34.41305(N) 076 12 17.91921(W)   ADJUSTED
 HV5815* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5815  ______________________________________________________________________
 HV5815  GEOID HEIGHT    -        -34.092 (meters)                     GEOID18
 HV5815  LAPLACE CORR    -         -4.70  (seconds)                    DEFLEC18
 HV5815  HORZ ORDER      -  THIRD
 HV5815
 HV5815.The horizontal coordinates were established by classical geodetic methods
 HV5815.and adjusted by the National Geodetic Survey in January 1992.
 HV5815
 HV5815.The orthometric height was scaled from a topographic map.
 HV5815
 HV5815.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5815.GEOID18 height accuracy estimate available here.
 HV5815
 HV5815.Click photographs - Photos may exist for this station.
 HV5815
 HV5815.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5815
 HV5815. The following values were computed from the NAD 83(1991) position.
 HV5815
 HV5815;                    North         East     Units Scale Factor Converg.
 HV5815;SPC MD       -   136,416.639   468,969.319   MT  0.99994989   +0 29 56.3
 HV5815;SPC MD       -   447,560.26  1,538,610.17   sFT  0.99994989   +0 29 56.3
 HV5815;UTM  18      - 4,305,580.853   395,500.105   MT  0.99973447   -0 45 23.9
 HV5815
 HV5815!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5815!SPC MD       -   1.00000523  x   0.99994989  =   0.99995512
 HV5815!UTM  18      -   1.00000523  x   0.99973447  =   0.99973970
 HV5815
 HV5815:                Primary Azimuth Mark                     Grid Az
 HV5815:SPC MD       -  BENN                                     180 15 17.7
 HV5815:UTM  18      -  BENN                                     181 30 37.9
 HV5815
 HV5815_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9550005580(NAD 83)
 HV5815
 HV5815|---------------------------------------------------------------------|
 HV5815| PID    Reference Object                     Distance      Geod. Az  |
 HV5815|                                                           dddmmss.s |
 HV5815| HV5721 BENN                                APPROX. 4.5 KM 1804514.0 |
 HV5815| HV5822 BRIAN REF STA                       APPROX. 4.3 KM 3510508.8 |
 HV5815|---------------------------------------------------------------------|
 HV5815
 HV5815                          SUPERSEDED SURVEY CONTROL
 HV5815
 HV5815  NAD 83(1986)-  38 53 34.40859(N)    076 12 17.93218(W) AD(       ) 3
 HV5815  NAD 27      -  38 53 33.97900(N)    076 12 19.11400(W) AD(       ) 3
 HV5815  USSD        -  38 53 34.37400(N)    076 12 18.89300(W) AD(       ) 3
 HV5815
 HV5815.Superseded values are not recommended for survey control.
 HV5815
 HV5815.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5815.See file dsdata.pdf to determine how the superseded data were derived.
 HV5815
 HV5815_MARKER: Z = SEE DESCRIPTION
 HV5815_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5815_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5815+STABILITY: SURFACE MOTION
 HV5815
 HV5815  HISTORY     - Date     Condition        Report By
 HV5815  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5815  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5815
 HV5815                          STATION DESCRIPTION
 HV5815
 HV5815'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5815'ON THE EASTERN SHORE OF PROSPECT BAY, ON POINT AT NW SIDE OF
 HV5815'ENTRANCE TO GREENWOOD CREEK, ABOUT 3 MILES NE OF TILGHMANS POINT,
 HV5815'AND 2-3/4 MILES N OF BENNETT POINT.  STATION IS ON A SAND-MARSH
 HV5815'POINT, ABOUT 2 FEET ABOVE HIGH WATER, 5 YARDS NW OF SHORE, 26
 HV5815'YARDS NW OF SHORE, 53 YARDS E BY N OF POINT OF SHORE, 37 YARDS SE
 HV5815'BY E OF A POINT OF SHORE, AND 105 YARDS SSW OF A POINT OF WOODS.
 HV5815'STATION MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV5815'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV5815'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV5815'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV5815'SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE BURIED WITH THE
 HV5815'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND
 HV5815'BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT
 HV5815'TANGENT OF WOODS ON TILGHMANS POINT, 3-3/8 MILES, S 52 DEG 46
 HV5815'MIN W.  E CHIMNEY OF BRICK HOUSE, 3-1/2 MILES, N 54 DEG 33 MIN W.
 HV5815'PEAK OF SMALL HOUSE, 4 MILES, N 24 DEG 10 MIN W.  CHIMNEY OUTSIDE
 HV5815'OF HOUSE, 4 MILES, N 13 DEG 32 MIN W.  NEAR PEAK OF BARN, 3 MILES,
 HV5815'N 0 DEG 55 MIN W.  PEAK OF HOUSE, 1 MILE, N 56 DEG 30 MIN E.
 HV5815'CHIMNEY OF HOUSE BEHIND BARN, 3/8 MILE, S 43 DEG 14 MIN E.  SQUARE
 HV5815'CHIMNEY OF HOUSE, 1-1/2 MILES, S 13 DEG 34 MIN E.
 HV5815
 HV5815                          STATION RECOVERY (1961)
 HV5815
 HV5815'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5815'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  THE POINT ON WHICH
 HV5815'THE STATION WAS LOCATED IS NOW CUT IN HALF AND THE END OF THE
 HV5815'POINT IS NOW A SMALL ISLAND.  IT IS BELIEVED THAT THE STATION HAS
 HV5815'BEEN WASHED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6214 ***********************************************************************
 HV6214  DESIGNATION -  GREEN
 HV6214  PID         -  HV6214
 HV6214  STATE/COUNTY-  MD/QUEEN ANNES
 HV6214  COUNTRY     -  US
 HV6214  USGS QUAD   -  KENT ISLAND (2016)
 HV6214
 HV6214                         *CURRENT SURVEY CONTROL
 HV6214  ______________________________________________________________________
 HV6214* NAD 83(1991) POSITION- 38 58 59.48540(N) 076 15 59.07810(W)   ADJUSTED
 HV6214* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6214  ______________________________________________________________________
 HV6214  GEOID HEIGHT    -        -33.654 (meters)                     GEOID18
 HV6214  LAPLACE CORR    -         -3.19  (seconds)                    DEFLEC18
 HV6214  HORZ ORDER      -  SECOND
 HV6214
 HV6214.The horizontal coordinates were established by classical geodetic methods
 HV6214.and adjusted by the National Geodetic Survey in January 1992.
 HV6214
 HV6214.The orthometric height was scaled from a topographic map.
 HV6214
 HV6214.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6214.GEOID18 height accuracy estimate available here.
 HV6214
 HV6214.Click photographs - Photos may exist for this station.
 HV6214
 HV6214.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6214
 HV6214. The following values were computed from the NAD 83(1991) position.
 HV6214
 HV6214;                    North         East     Units Scale Factor Converg.
 HV6214;SPC MD       -   146,395.555   463,559.486   MT  0.99995160   +0 27 37.5
 HV6214;SPC MD       -   480,299.42  1,520,861.41   sFT  0.99995160   +0 27 37.5
 HV6214;UTM  18      - 4,315,673.876   390,311.461   MT  0.99974815   -0 47 48.4
 HV6214
 HV6214!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6214!SPC MD       -   1.00000516  x   0.99995160  =   0.99995676
 HV6214!UTM  18      -   1.00000516  x   0.99974815  =   0.99975331
 HV6214
 HV6214:                Primary Azimuth Mark                     Grid Az
 HV6214:SPC MD       -  RED BARN SOUTH VENTILATOR                303 12 49.0
 HV6214:UTM  18      -  RED BARN SOUTH VENTILATOR                304 28 14.9
 HV6214
 HV6214_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9031115673(NAD 83)
 HV6214
 HV6214|---------------------------------------------------------------------|
 HV6214| PID    Reference Object                     Distance      Geod. Az  |
 HV6214|                                                           dddmmss.s |
 HV6214| DR1338 GREEN RM 2                           53.675 METERS 19156     |
 HV6214| DR1337 GREEN RM 1                           26.195 METERS 19202     |
 HV6214| HV6164 RED BARN SOUTH VENTILATOR           APPROX. 2.7 KM 3034026.5 |
 HV6214| HV6197 END                                 APPROX. 2.0 KM 3052527.7 |
 HV6214| JV5165 LOVE PT FERRY WHSE EAST GABLE       APPROX. 6.1 KM 3314054.7 |
 HV6214|---------------------------------------------------------------------|
 HV6214
 HV6214                          SUPERSEDED SURVEY CONTROL
 HV6214
 HV6214  NAD 83(1986)-  38 58 59.48086(N)    076 15 59.09002(W) AD(       ) 2
 HV6214  NAD 27      -  38 58 59.07700(N)    076 16 00.25300(W) AD(       ) 2
 HV6214
 HV6214.Superseded values are not recommended for survey control.
 HV6214
 HV6214.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6214.See file dsdata.pdf to determine how the superseded data were derived.
 HV6214
 HV6214_MARKER: DS = TRIANGULATION STATION DISK
 HV6214_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6214_STAMPING: GREEN 1932
 HV6214_MARK LOGO: CGS
 HV6214_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6214+STABILITY: SURFACE MOTION
 HV6214
 HV6214  HISTORY     - Date     Condition        Report By
 HV6214  HISTORY     - 1932     MONUMENTED       CGS
 HV6214  HISTORY     - 1938     SEE DESCRIPTION  CGS
 HV6214
 HV6214                          STATION DESCRIPTION
 HV6214
 HV6214'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (JAB)
 HV6214'STATION IS ON THE NE SIDE OF KENT ISLAND ON THE S SHORE OF THE
 HV6214'CHESTER RIVER BETWEEN MACUM CREEK AND PINEY CREEK IN A CULTIVATED
 HV6214'FIELD.  CREST OF THE RIVER BLUFF IS 25 METERS N OF THE
 HV6214'STATION.  A SMALL SHACK ON TOP OF THE BLUFF 15 82.5 METERS W OF
 HV6214'THE STATION.  A WIRE FENCE ROW IS 80 METERS W OF THE STATION.
 HV6214'
 HV6214'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV6214'DISKS SET IN CONCRETE.
 HV6214'
 HV6214'HEIGHT OF SIGNAL ABOVE STATION MARK - 6 METERS.
 HV6214
 HV6214                          STATION RECOVERY (1938)
 HV6214
 HV6214'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 HV6214'STATION DESTROYED BY EROSION AND CULTIVATION.  STATION MARK AND
 HV6214'REFERENCE MARK NO.2, WERE FOUND ON SAND BEACH BELOW BLUFF.  BEACH
 HV6214'AND BLUFF SHOW MARKED EVIDENCE OF EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6353 ***********************************************************************
 HV6353  DESIGNATION -  GREEN
 HV6353  PID         -  HV6353
 HV6353  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6353  COUNTRY     -  US
 HV6353  USGS QUAD   -  ANNAPOLIS (2016)
 HV6353
 HV6353                         *CURRENT SURVEY CONTROL
 HV6353  ______________________________________________________________________
 HV6353* NAD 83(1991) POSITION- 38 58 31.52207(N) 076 27 15.36735(W)   ADJUSTED
 HV6353* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6353  ______________________________________________________________________
 HV6353  GEOID HEIGHT    -        -33.411 (meters)                     GEOID18
 HV6353  LAPLACE CORR    -         -2.99  (seconds)                    DEFLEC18
 HV6353  HORZ ORDER      -  SECOND
 HV6353
 HV6353.The horizontal coordinates were established by classical geodetic methods
 HV6353.and adjusted by the National Geodetic Survey in January 1992.
 HV6353
 HV6353.The orthometric height was scaled from a topographic map.
 HV6353
 HV6353.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6353.GEOID18 height accuracy estimate available here.
 HV6353
 HV6353.Click photographs - Photos may exist for this station.
 HV6353
 HV6353.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6353
 HV6353. The following values were computed from the NAD 83(1991) position.
 HV6353
 HV6353;                    North         East     Units Scale Factor Converg.
 HV6353;SPC MD       -   145,419.243   447,288.508   MT  0.99995135   +0 20 33.1
 HV6353;SPC MD       -   477,096.30  1,467,479.05   sFT  0.99995135   +0 20 33.1
 HV6353;UTM  18      - 4,315,054.926   374,025.914   MT  0.99979541   -0 54 53.4
 HV6353
 HV6353!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6353!SPC MD       -   1.00000481  x   0.99995135  =   0.99995616
 HV6353!UTM  18      -   1.00000481  x   0.99979541  =   0.99980022
 HV6353
 HV6353:                Primary Azimuth Mark                     Grid Az
 HV6353:SPC MD       -  GREEN RM 4 AZIMUTH                       027 05 12.6
 HV6353:UTM  18      -  GREEN RM 4 AZIMUTH                       028 20 39.1
 HV6353
 HV6353_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7402515054(NAD 83)
 HV6353
 HV6353|---------------------------------------------------------------------|
 HV6353| PID    Reference Object                     Distance      Geod. Az  |
 HV6353|                                                           dddmmss.s |
 HV6353| HV6396 ANNAPOLIS NAVAL ACAD NW MAST        APPROX. 1.4 KM 0042424.1 |
 HV6353| HV6310 NAVAL RADIO TOWER 2                 APPROX. 1.2 KM 0051300.5 |
 HV6353| HV6322 NAVAL RADIO TOWER 3                 APPROX. 0.8 KM 0072325.9 |
 HV6353| HV6361 GREENBURY POINT WATER TANK          APPROX. 1.4 KM 0083159.3 |
 HV6353| HV6311 NAVAL RADIO TOWER 4                 APPROX. 1.5 KM 0143957.4 |
 HV6353| CX2818 GREEN RM 4 AZIMUTH                                 0272545.7 |
 HV6353| HV6397 ANNAPOLIS NAVAL ACAD SE MAST        APPROX. 0.9 KM 0273350.9 |
 HV6353| JV5183 LABROT MANSION CENTER CHIMNEY       APPROX. 4.0 KM 0432036.2 |
 HV6353| HV6308 WHITE HOUSE NORTHERLY CHIMNEY       APPROX. 3.0 KM 0580953.5 |
 HV6353| HV6347 CHESAPEAKE BAY BRIDGE W TOWER       APPROX. 6.3 KM 0711055.4 |
 HV6353| HV6354 CHESAPEAKE BAY BRIDGE E TOWER       APPROX. 6.8 KM 0733459.1 |
 HV6353| CX2815 GREEN RM 1                           21.153 METERS 08452     |
 HV6353| HV6398 GR 1                                 39.044 METERS 12242     |
 HV6353| CX2816 GREEN RM 2                           22.455 METERS 19515     |
 HV6353| HV6340 ANNAPOLIS ROADS CLUBHOUSE TWR       APPROX. 2.9 KM 2024824.9 |
 HV6353| CX2819 GREEN RM 5                           10.176 METERS 22914     |
 HV6353| HV6392 ANNAPOLIS ST ANNS EPIS SPIRE        APPROX. 3.4 KM 2754323.9 |
 HV6353| HV6395 ANNAPOLIS NAVAL ACAD CHAPEL         APPROX. 2.9 KM 2834608.2 |
 HV6353| CX2817 GREEN RM 3                           17.852 METERS 30137     |
 HV6353|---------------------------------------------------------------------|
 HV6353
 HV6353                          SUPERSEDED SURVEY CONTROL
 HV6353
 HV6353  NAD 83(1986)-  38 58 31.51818(N)    076 27 15.37888(W) AD(       ) 2
 HV6353  NAD 27      -  38 58 31.11600(N)    076 27 16.52600(W) AD(       ) 2
 HV6353
 HV6353.Superseded values are not recommended for survey control.
 HV6353
 HV6353.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6353.See file dsdata.pdf to determine how the superseded data were derived.
 HV6353
 HV6353_MARKER: DS = TRIANGULATION STATION DISK
 HV6353_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6353_STAMPING: GREEN 1932
 HV6353_MARK LOGO: CGS
 HV6353_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6353
 HV6353  HISTORY     - Date     Condition        Report By
 HV6353  HISTORY     - 1932     MONUMENTED       CGS
 HV6353  HISTORY     - 1934     GOOD             CGS
 HV6353  HISTORY     - 1945     GOOD             CGS
 HV6353  HISTORY     - 1945     GOOD             LOCENG
 HV6353  HISTORY     - 1946     GOOD             LOCENG
 HV6353  HISTORY     - 1954     GOOD             CGS
 HV6353  HISTORY     - 1961     GOOD             CGS
 HV6353  HISTORY     - 1965     GOOD             CGS
 HV6353  HISTORY     - 1975     GOOD             MDDNR
 HV6353  HISTORY     - 1977     GOOD             NGS
 HV6353  HISTORY     - 1988     GOOD             MDDNR
 HV6353  HISTORY     - 20000217 GOOD             USPSQD
 HV6353
 HV6353                          STATION DESCRIPTION
 HV6353
 HV6353'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6353'ON GREENBURY POINT ON HIGH LEVEL GROUND OF THE NAVAL RESERVATION,
 HV6353'70 METERS (230 FEET) FROM TOP OF CLIFF TO WESTWARD, 80 METERS
 HV6353'(262 FEET) FROM TOP OF CLIFF TO EASTWARD, AND 75 METERS (246
 HV6353'FEET) FROM TOP OF CLIFF TO SOUTHWARD IN RANGE WITH GREENBURY
 HV6353'POINT LIGHT.
 HV6353'
 HV6353'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV6353'CONCRETE, IN THE TOP OF TILE.
 HV6353'UNDERGROUND MARK IS A BLOCK OF CONCRETE BELOW THE GROUND
 HV6353'CONTAINING A STANDARD BRONZE DISK.
 HV6353'
 HV6353'STATION MARK AND REFERENCE MARKS PROJECT 1 INCH ABOVE SURFACE
 HV6353'OF THE GROUND
 HV6353
 HV6353                          STATION RECOVERY (1934)
 HV6353
 HV6353'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6353'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS ARE IN GOOD
 HV6353'CONDITION.
 HV6353'
 HV6353'AN AZIMUTH MARK WAS SET IN 1933 BUT THE STATION WAS NOT OCCUPIED
 HV6353'UNTIL JULY 31, 1934.  THE MARK IS STAMPED GREEN NO.4 1933.  IT
 HV6353'IS A STANDARD DISK CEMENTED IN THE CONCRETE FOUNDATION OF THE
 HV6353'SOUTHERNMOST LEG OF THE SE RADIO TOWER, IT IS IN THE SW CORNER OF
 HV6353'THE FOUNDATION.
 HV6353
 HV6353                          STATION RECOVERY (1945)
 HV6353
 HV6353'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945 (TBR)
 HV6353'STATION RECOVERED IN GOOD CONDITION.  REFERENCE MARKS 1, 2, AND 3
 HV6353'WERE NOT FOUND.  THEY ARE PROBABLY COVERED WITH GRASS AND TIME
 HV6353'WAS NOT AVAILABLE FOR A THOROUGH SEARCH.  THE AZIMUTH MARK
 HV6353'(R.M. 4) IS IN THE FOUNDATION OF TOWER NO. 5, THE SECOND TOWER
 HV6353'FROM THE S END IN THE E LINE OF TOWERS.
 HV6353'
 HV6353'STATION IS 272 FEET S OF THE CENTER OF THE S RADIO TOWER AND
 HV6353'37 FEET W OF THE LINE FROM THE TOWER TO GREENBURY POINT LIGHT.  THE
 HV6353'MARK IS FLUSH WITH THE SURFACE OF THE GROUND.
 HV6353
 HV6353                          STATION RECOVERY (1945)
 HV6353
 HV6353'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1945 (BEB)
 HV6353'RECOVERED BY JE GREINER C.
 HV6353'
 HV6353'STATION AND REFERENCE MARKS RECOVERED AS DESCRIBED.  TWO NEW
 HV6353'STATIONS ESTABLISHED NEARBY, NEARNINE AND BELL.  COORDINATES
 HV6353'AND DESCRIPTIONS ARE ON FILE IN THE PUBLIC WORKS OFFICE,
 HV6353'U.S. NAVAL ACADEMY.  NEW TRIANGULATION IN SEVERN RIVER AND
 HV6353'CARRS CREEK IS BASED ON GREEN 1932 AND OTHER STATIONS OF THE
 HV6353'U.S. COAST AND GEODETIC SURVEY.
 HV6353
 HV6353                          STATION RECOVERY (1946)
 HV6353
 HV6353'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1946 (BEB)
 HV6353'RECOVERED BY JE GREINER C.
 HV6353'
 HV6353'LETTER FROM MR. B.E. BEAVIN, PROJECT ENGINEER, J.E. GREINER
 HV6353'COMPANY, BALTIMORE, MARYLAND, DATED JULY 25, 1946--
 HV6353'
 HV6353'IN CONNECTION WITH THE TOPOGRAPHIC AND CONTROL SURVEYS WHICH WE
 HV6353'ARE MAKING FOR THE U.S. NAVAL ACADEMY AND AT THE REQUEST OF THE
 HV6353'U.S. NAVY, WE HAVE INSTALLED A PERMANENT STEEL SIGNAL OVER THE
 HV6353'STATION.  THE TRIPOD IS CONSTRUCTED SO AS NOT TO INTERFERE WITH
 HV6353'AN INSTRUMENT SET OVER THE STATION.
 HV6353
 HV6353                          STATION RECOVERY (1954)
 HV6353
 HV6353'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 HV6353'STATION, ALL REFERENCE MARKS AND AZIMUTH MARK WERE RECOVERED IN
 HV6353'GOOD CONDITION AS DESCRIBED.  A PERMANENT SMALL STEEL TOWER
 HV6353'(APPROXIMATELY 10 FT. HIGH) HAS BEEN CONSTRUCTED OVER THE
 HV6353'STATION MARK.  THE TOWER DOES NOT INTERFERE WITH AN INSTRUMENT SET
 HV6353'OVER THE STATION.
 HV6353
 HV6353                          STATION RECOVERY (1961)
 HV6353
 HV6353'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 HV6353'STATION RECOVERED IN GOOD CONDITION.  STATION WAS STAMPED
 HV6353'GREEN 1932.  A SEARCH WAS MADE BUT NO REFERENCE MARKS COULD
 HV6353'BE FOUND.  A RADAR STATION NOW STANDS A FEW FEET S. OF THE
 HV6353'STATION.  THE TRIPOD STILL STANDS OVER THE STATION AS DESCRIBED
 HV6353'BY E.H.K. 1954.  THE DESCRIPTION BY L.O.C. IS ADEQUATE FOR
 HV6353'RECOVERY OF THE STATION.
 HV6353
 HV6353                          STATION RECOVERY (1965)
 HV6353
 HV6353'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (JKW)
 HV6353'STATION MARK RECOVERED IN GOOD CONDITION.  REFERENCE MARKS 1,
 HV6353'2, 3, AND 4 NOT SEARCHED FOR.  THE DESCRIPTION BY L.O.C. IN
 HV6353'1932 AND THE RECOVERY NOTE BY G.F.W. IN 1961 IS
 HV6353'ADEQUATE FOR RECOVERY.
 HV6353
 HV6353                          STATION RECOVERY (1975)
 HV6353
 HV6353'RECOVERY NOTE BY MD DEPT OF NAT RES 1975
 HV6353'STATION MARK RECOVERED AS DESCRIBED IN GOOD CONDITION 4 INCHES
 HV6353'BELOW SURFACE.  RM 1 AND RM 3 FOUND DESTROYED.  RM 2 NOT RECOVERED
 HV6353'SINCE CONCRETE BUILDING ENCLOSED BY FENCE COVERS AREA WHERE RM 2
 HV6353'SHOULD BE.  STEEL TOWER STILL OVER STATION.  STATION IS 13 FEET N
 HV6353'OF FENCE AND 17.6 NW OF NE FENCE CORNER AND 59.4 FEET NE OF NW
 HV6353'FENCE CORNER.  RM 4 NOT SEARCHED FOR.
 HV6353
 HV6353                          STATION RECOVERY (1977)
 HV6353
 HV6353'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 HV6353'STATION MARK AND AZIMUTH MARK WERE RECOVERED IN GOOD
 HV6353'CONDITION.  THE REFERENCE MARKS WERE NOT RECOVERED AND BELIEVED
 HV6353'DESTROYED DURING CONSTRUCTION OF BUILDING NEAR THE
 HV6353'STATION.  REFERENCE MARK 5 WAS ESTABLISHED AND GR 1 ANNE
 HV6353'ARUNDEL COUNTY SURVEY MARK WAS TIED IN AND COULD BE USED AS A
 HV6353'REFERENCE MARK.
 HV6353'
 HV6353'THE STATION IS LOCATED NEAR THE SOUTH END OF GREENBURY POINT,
 HV6353'ON A U.S. NAVY RESERVATION, ABOUT 2 MILES EAST OF ANNAPOLIS
 HV6353'AND JUST SOUTH OF A GROUP OF LARGE RADIO TOWERS.
 HV6353'
 HV6353'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 450
 HV6353'AND 648 AT THE NORTHEAST END OF THE OLD SEVERN RIVER BRIDGE,
 HV6353'ABOUT 1-1/2 MILES NORTH-NORTHEAST OF ANNAPOLIS.  GO EASTERLY ON
 HV6353'STATE HIGHWAY 648 (BALTO-ANNAPOLIS RD) FOR 0.45 MILE TO FORKS
 HV6353'(EDGEWOOD RD AND GREENBURY RD), CONTINUE EASTERLY ON GREENBURY
 HV6353'ROAD FOR 1.05 MILES TO A GUARD GATE, PASS THROUGH GATE, CONTINUE
 HV6353'FOR 0.15 MILE TO THE MAIN BUILDING ON RIGHT, AND CHECK IN WITH
 HV6353'DUTY OFFICER, CONTINUE AHEAD FOR 0.3 MILE TO A GRAVEL SIDE
 HV6353'ROAD RIGHT, TURN RIGHT, GO SOUTHERLY PASSING TO THE RIGHT OF
 HV6353'LARGE TOWER FOR 0.95 MILE TO BUILDING NO. 151 AND THE
 HV6353'STATION ON THE LEFT.  TO REACH THE AZIMUTH MARK, CONTINUE ON
 HV6353'ROAD AROUND BUILDING AND FOLLOW GRAVEL ROAD NORTHERLY FOR 0.55
 HV6353'MILE TO THE AZIMUTH MARK ON LEFT.
 HV6353'
 HV6353'STATION MARK IS A STANDARD DISK SET TOP OF A 12 INCH SQUARE
 HV6353'CONCRETE MONUMENT FLUSH WITH THE GROUND AND IS STAMPED GREEN
 HV6353'1932.  IT IS 111 FEET WEST OF CENTER OF GRAVEL ROAD, 109 FEET
 HV6353'EAST OF CENTER OF GRAVEL ROAD, 34.2 FEET NORTHEAST OF CENTER OF
 HV6353'BOTTOM STEP LEADING TO TOP OF BUILDING AND 25 FEET
 HV6353'NORTH-NORTHEAST OF NORTHEAST CORNER OF BUILDING.  THERE IS 10
 HV6353'FOOT HIGH 3 LEGGED STEEL TOWER OVER THE STATION MARK.
 HV6353'
 HV6353'REFERENCE MARK 5 IS A STANDARD DISK SET IN A DRILL HOLE IN THE
 HV6353'CONCRETE FOUNDATION AT THE BOTTOM OF THE STEPS LEADING TO TOP
 HV6353'OF BUILDING AND IS STAMPED GREEN 1932 NO 5 1977.  IT IS 25.6
 HV6353'FEET WEST OF THE NORTHEAST CORNER OF BUILDING 151 AND 3.2 FEET
 HV6353'NORTH OF THE NORTH EDGE OF THE BUILDING.
 HV6353'
 HV6353'GR 1 IS A ANNE ARUNDEL COUNTY SURVEY DISK SET IN A 6 INCH SQUARE
 HV6353'CONCRETE MONUMENT FLUSH WITH THE GROUND AND IS STAMPED GR 1
 HV6353'(ELEV 17.927 FT).
 HV6353'
 HV6353'IT IS 117 FEET EAST OF THE NORTHEAST CORNER OF BUILDING NO. 151,
 HV6353'17 FEET EAST OF CENTER OF GRAVEL ROAD AND 1.8 FEET SOUTHWEST OF
 HV6353'A WITNESS POST.
 HV6353'
 HV6353'REFERENCE MARK 4 (AZI MK) IS A STANDARD DISK SET IN CONCRETE IN
 HV6353'A 6 INCH TILE PROJECTING ABOUT 4 INCHES ABOVE THE CONCRETE BASE OF
 HV6353'AN OLD CONCRETE BASE OF RADIO TOWER WHICH HAS BEEN TORN DOWN,
 HV6353'THE CONCRETE BASE 8 X 11 FEET AND PROJECTS ABOUT 1 FOOT ABOVE
 HV6353'THE GROUND.  THE DISK IS STAMPED GREEN NO 4 1933.  IT IS 132 FEET
 HV6353'WEST OF CENTER OF GRAVEL ROAD, 114 FEET SOUTH OF CENTER OF TRACK
 HV6353'ROAD AND 94 FEET SOUTH-SOUTHWEST OF CENTER OF RADIO MAST NO. 5.
 HV6353'
 HV6353'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV6353'2 MILES EAST OF ANNAPOLIS.
 HV6353
 HV6353                          STATION RECOVERY (1988)
 HV6353
 HV6353'RECOVERY NOTE BY MD DEPT OF NAT RES 1988 (LW)
 HV6353'RECOVERED IN GOOD CONDITION.
 HV6353
 HV6353                          STATION RECOVERY (2000)
 HV6353
 HV6353'RECOVERY NOTE BY US POWER SQUADRON 2000
 HV6353'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7430 ***********************************************************************
 HV7430  DESIGNATION -  GREEN
 HV7430  PID         -  HV7430
 HV7430  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7430  COUNTRY     -  US
 HV7430  USGS QUAD   -  PISCATAWAY (2016)
 HV7430
 HV7430                         *CURRENT SURVEY CONTROL
 HV7430  ______________________________________________________________________
 HV7430* NAD 83(1993) POSITION- 38 39 34.45601(N) 076 55 05.12131(W)   ADJUSTED
 HV7430* NAVD 88 ORTHO HEIGHT -    63.9   (meters)      210.    (feet) VERTCON3
 HV7430  ______________________________________________________________________
 HV7430  GEOID HEIGHT    -        -32.796 (meters)                     GEOID18
 HV7430  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 HV7430  HORZ ORDER      -  FIRST
 HV7430
 HV7430.The horizontal coordinates were established by classical geodetic methods
 HV7430.and adjusted by the National Geodetic Survey in November 1994.
 HV7430
 HV7430.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7430.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7430
 HV7430.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7430.GEOID18 height accuracy estimate available here.
 HV7430
 HV7430.Click photographs - Photos may exist for this station.
 HV7430
 HV7430.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7430
 HV7430. The following values were computed from the NAD 83(1993) position.
 HV7430
 HV7430;                    North         East     Units Scale Factor Converg.
 HV7430;SPC MD       -   110,219.463   407,129.201   MT  0.99995693   +0 03 05.1
 HV7430;SPC MD       -   361,611.69  1,335,723.05   sFT  0.99995693   +0 03 05.1
 HV7430;UTM  18      - 4,280,745.367   333,109.427   MT  0.99994300   -1 11 54.6
 HV7430
 HV7430!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7430!SPC MD       -   0.99999512  x   0.99995693  =   0.99995205
 HV7430!UTM  18      -   0.99999512  x   0.99994300  =   0.99993812
 HV7430
 HV7430:                Primary Azimuth Mark                     Grid Az
 HV7430:SPC MD       -  GREEN AZ MK                              304 03 48.4
 HV7430:UTM  18      -  GREEN AZ MK                              305 18 48.1
 HV7430
 HV7430_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3310980745(NAD 83)
 HV7430
 HV7430|---------------------------------------------------------------------|
 HV7430| PID    Reference Object                     Distance      Geod. Az  |
 HV7430|                                                           dddmmss.s |
 HV7430| CX2822 GREEN RM 2                           34.942 METERS 03255     |
 HV7430| CX2820 GREEN AZ MK                                        3040653.5 |
 HV7430| CX2821 GREEN RM 1                           23.334 METERS 33317     |
 HV7430|---------------------------------------------------------------------|
 HV7430
 HV7430                          SUPERSEDED SURVEY CONTROL
 HV7430
 HV7430  NAD 83(1991)-  38 39 34.45563(N)    076 55 05.12157(W) AD(       ) 1
 HV7430  NAD 83(1986)-  38 39 34.45501(N)    076 55 05.13628(W) AD(       ) 1
 HV7430  NAD 27      -  38 39 34.03660(N)    076 55 06.23514(W) AD(       ) 1
 HV7430  NGVD 29 (07/19/86)   64.1    (m)          210.     (f) VERT ANG       
 HV7430
 HV7430.Superseded values are not recommended for survey control.
 HV7430
 HV7430.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7430.See file dsdata.pdf to determine how the superseded data were derived.
 HV7430
 HV7430_MARKER: DS = TRIANGULATION STATION DISK
 HV7430_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7430_STAMPING: GREEN 1970
 HV7430_MARK LOGO: CGS
 HV7430_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7430+STABILITY: SURFACE MOTION
 HV7430
 HV7430  HISTORY     - Date     Condition        Report By
 HV7430  HISTORY     - 1970     MONUMENTED       NGS
 HV7430  HISTORY     - 20040408 MARK NOT FOUND   URS
 HV7430  HISTORY     - 20040413 MARK NOT FOUND   URS
 HV7430
 HV7430                          STATION DESCRIPTION
 HV7430
 HV7430'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7430'THE STATION IS ABOUT 4-1/2 MILE SOUTHWEST OF BRANDYWINE,
 HV7430'2-1/2 MILES NORTH-NORTHWEST OF WALDORF, 1/2 MILES NORTH OF THE
 HV7430'PRINCE GEORGES-CHARLES COUNTY LINE AND ON PROPERTY OWNED BY
 HV7430'J.G. CHANDLER, ROUTE 2, BOX 43, WALDORF, MARYLAND.
 HV7430'
 HV7430'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 5 AND STATE
 HV7430'HIGHWAY 373 AT T.B., GO WEST-SOUTHWEST ON STATE HIGHWAY 373 FOR 2.95
 HV7430'MILES TO A FORK.  TAKE THE LEFT FORK AND CONTINUE SOUTHWESTERLY ON
 HV7430'STATE HIGHWAY 373 FOR 1.15 MILES TO A CROSSROAD, GARDNER ROAD.
 HV7430'TURN LEFT, AND GO SOUTHEASTERLY ON GARDNER ROAD FOR 1.4 MILES TO
 HV7430'THE AZIMUTH MARK ON THE RIGHT.  CONTINUE SOUTHEASTERLY ON
 HV7430'GARDNER ROAD FOR 0.3 MILE TO A GRAVELED SIDE ROAD RIGHT.  TURN
 HV7430'RIGHT AND GO SOUTH ON THE GRAVELED ROAD FOR 0.25 MILE TO A
 HV7430'DRIVEWAY ON THE LEFT.  TURN LEFT AND GO EAST ON THE DRIVEWAY
 HV7430'FOR 0.05 MILE TO THE STATION AT A HOUSE.
 HV7430'
 HV7430'THE STATION MARK IS A STANDARD DISK, STAMPED GREEN 1970, SET IN
 HV7430'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV7430'FLUSH WITH THE GROUND SURFACE.  IT IS 57.9 FEET WEST OF THE
 HV7430'SOUTHWEST CORNER OF THE HOUSE AND 41.7 FEET SOUTH-SOUTHEAST OF
 HV7430'THE SOUTHWEST CORNER OF A GARAGE.  THE UNDERGROUND MARK IS 38
 HV7430'INCHES BELOW THE GROUND SURFACE.
 HV7430'
 HV7430'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED GREEN NO 1 1970,
 HV7430'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7430'THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 34.3 FEET SOUTHEAST
 HV7430'OF A POWER LINE POLE NUMBERED 1, 24.3 FEET NORTH-NORTHWEST OF THE
 HV7430'NORTHWEST CORNER OF THE GARAGE, 11.0 FEET SOUTH OF THE CENTERLINE
 HV7430'OF THE DRIVEWAY, AND ABOUT 1 FOOT HIGHER IN ELEVATION THAN THE
 HV7430'STATION.
 HV7430'
 HV7430'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED GREEN NO 2 1970,
 HV7430'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7430'IS FLUSH WITH THE GROUND SURFACE.  IT IS 68.9 FEET NORTH-NORTHEAST
 HV7430'OF THE NORTHWEST CORNER OF THE HOUSE, 34.6 FEET EAST-SOUTHEAST
 HV7430'OF A POWER LINE POLE, 8.0 FEET NORTH OF THE CENTERLINE OF THE
 HV7430'DRIVEWAY AND ABOUT 1 FOOT HIGHER IN ELEVATION THAN THE STATION.
 HV7430'
 HV7430'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED GREEN 1970, SET IN
 HV7430'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7430'PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 36.5 FEET
 HV7430'EAST-SOUTHEAST OF THE CENTERLINE OF A DRIVEWAY, 25.3 FEET
 HV7430'WEST-NORTHWEST OF A POWER LINE POLE NUMBERED 51, 16.5 FEET
 HV7430'SOUTH-SOUTHWEST OF THE CENTERLINE OF GARDNER ROAD AND 1.5 FEET
 HV7430'SOUTHEAST OF A WITNESS POST.
 HV7430
 HV7430                          STATION RECOVERY (2004)
 HV7430
 HV7430'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 HV7430'MARK NOT FOUND.
 HV7430
 HV7430                          STATION RECOVERY (2004)
 HV7430
 HV7430'RECOVERY NOTE BY URS COMPANY 2004 (SB)
 HV7430'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5399 ***********************************************************************
 JV5399  DESIGNATION -  GREEN
 JV5399  PID         -  JV5399
 JV5399  STATE/COUNTY-  MD/BALTIMORE
 JV5399  COUNTRY     -  US
 JV5399  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5399
 JV5399                         *CURRENT SURVEY CONTROL
 JV5399  ______________________________________________________________________
 JV5399* NAD 83(1991) POSITION- 39 15 45.29967(N) 076 27 08.20291(W)   ADJUSTED
 JV5399* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5399  ______________________________________________________________________
 JV5399  GEOID HEIGHT    -        -33.013 (meters)                     GEOID18
 JV5399  LAPLACE CORR    -         -1.02  (seconds)                    DEFLEC18
 JV5399  HORZ ORDER      -  SECOND
 JV5399
 JV5399.The horizontal coordinates were established by classical geodetic methods
 JV5399.and adjusted by the National Geodetic Survey in January 1992.
 JV5399
 JV5399.The orthometric height was scaled from a topographic map.
 JV5399
 JV5399.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5399.GEOID18 height accuracy estimate available here.
 JV5399
 JV5399.Click photographs - Photos may exist for this station.
 JV5399
 JV5399.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5399
 JV5399. The following values were computed from the NAD 83(1991) position.
 JV5399
 JV5399;                    North         East     Units Scale Factor Converg.
 JV5399;SPC MD       -   177,298.331   447,269.686   MT  0.99997258   +0 20 37.6
 JV5399;SPC MD       -   581,686.27  1,467,417.29   sFT  0.99997258   +0 20 37.6
 JV5399;UTM  18      - 4,346,921.441   374,708.085   MT  0.99979329   -0 55 09.2
 JV5399
 JV5399!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5399!SPC MD       -   1.00000507  x   0.99997258  =   0.99997765
 JV5399!UTM  18      -   1.00000507  x   0.99979329  =   0.99979835
 JV5399
 JV5399:                Primary Azimuth Mark                     Grid Az
 JV5399:SPC MD       -  STAN                                     009 40 15.1
 JV5399:UTM  18      -  STAN                                     010 56 01.9
 JV5399
 JV5399_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7470846921(NAD 83)
 JV5399
 JV5399|---------------------------------------------------------------------|
 JV5399| PID    Reference Object                     Distance      Geod. Az  |
 JV5399|                                                           dddmmss.s |
 JV5399| JV5403 STAN                                APPROX. 1.0 KM 0100052.7 |
 JV5399| CA9464 GREEN RM 1                           15.365 METERS 18226     |
 JV5399|---------------------------------------------------------------------|
 JV5399
 JV5399                          SUPERSEDED SURVEY CONTROL
 JV5399
 JV5399  NAD 83(1986)-  39 15 45.29516(N)    076 27 08.21173(W) AD(       ) 2
 JV5399  NAD 27      -  39 15 44.91000(N)    076 27 09.36100(W) AD(       ) 2
 JV5399
 JV5399.Superseded values are not recommended for survey control.
 JV5399
 JV5399.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5399.See file dsdata.pdf to determine how the superseded data were derived.
 JV5399
 JV5399_MARKER: DS = TRIANGULATION STATION DISK
 JV5399_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5399_STAMPING: GREEN 1934
 JV5399_MARK LOGO: CGS
 JV5399_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5399+STABILITY: SURFACE MOTION
 JV5399
 JV5399  HISTORY     - Date     Condition        Report By
 JV5399  HISTORY     - 1934     MONUMENTED       CGS
 JV5399  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5399  HISTORY     - 1974     GOOD             MDDNR
 JV5399
 JV5399                          STATION DESCRIPTION
 JV5399
 JV5399'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5399'ON WESTERN SHORE OF BACK RIVER, BETWEEN STANSBURY POINT AND TODD
 JV5399'POINT.  STATION IS NEAR S END OF BLUFF THAT IS SLIGHTLY NEARER TO
 JV5399'STANSBURY POINT, ON PROPERTY OF WILL GREEN.  STATION IS 6 FEET
 JV5399'ABOVE HIGH-WATER LINE AND 35 FEET BEHIND HIGH-WATER LINE.
 JV5399'
 JV5399'STATION AND REFERENCE MARK ARE STANDARD BRONZE DISKS SET IN
 JV5399'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5399'
 JV5399'REFERENCE MARK IS 50 FEET S OF STATION AND 7 FEET FROM 14-INCH
 JV5399'FORKED LOCUST TREE.  STATION, REFERENCE MARK, LOCUST TREE AND
 JV5399'STANSBURY POINT ARE ALL ON RANGE.
 JV5399
 JV5399                          STATION RECOVERY (1961)
 JV5399
 JV5399'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5399'STATION AND R.M. COULD NOT BE FOUND.  THE ENTIRE SHORELINE
 JV5399'FEATURES HAVE CHANGED.  THE WHOLE BLUFF IS COVERED WITH A THICK
 JV5399'GROWTH OF HONEYSUCKLE VINES.
 JV5399
 JV5399                          STATION RECOVERY (1974)
 JV5399
 JV5399'RECOVERY NOTE BY MD DEPT OF NAT RES 1974
 JV5399'STATION RECOVERED AS DESCRIBED IN GOOD CONDITION.  IT IS EXPOSED 4
 JV5399'INCHES.  THE REFERENCE MARK WAS NOT RECOVERED AND IS PROBABLY
 JV5399'DESTROYED.
 JV5399'
 JV5399'FOLLOWING IS A NEW TO REACH WITH CORRECTED DESCRIPTION--
 JV5399'
 JV5399'TO REACH FROM INTERSECTION OF LYNHURST AND BEACHWOOD ROADS GO
 JV5399'SOUTH ON BEACHWOOD RD. 0.6 MILES TO A STEEL ROAD BARRICADE ON THE
 JV5399'WEST SIDE OF BEACHWOOD RD. AT AN OLD R.R. CROSSING AND WHERE AN
 JV5399'EARTH DIKE MEETS THE EAST SIDE OF BEACHWOOD RD.  ON FOOT, FOLLOW
 JV5399'EARTH DIKE EASTERLY AND SOUTHERLY TO A POINT JUST NORTH OF SEVERAL
 JV5399'LARGE STUMPS WHERE A MOTORCYCLE TRAIL TURNS EAST THRU TREES.
 JV5399'FOLLOWING THIS TRAIL FROM THE DIKE 370 PACES EASTERLY AND
 JV5399'SOUTHERLY TO A POINT WHERE THE TRAIL TURNS WESTERLY NEAR AN OLD
 JV5399'ABANDONED CHEV. CAR.  TURN EAST ABOUT 60 FEET TO WITNESS POST AND
 JV5399'STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7216 ***********************************************************************
 JV7216  DESIGNATION -  GREEN
 JV7216  PID         -  JV7216
 JV7216  STATE/COUNTY-  MD/FREDERICK
 JV7216  COUNTRY     -  US
 JV7216  USGS QUAD   -  URBANA (2016)
 JV7216
 JV7216                         *CURRENT SURVEY CONTROL
 JV7216  ______________________________________________________________________
 JV7216* NAD 83(2011) POSITION- 39 19 15.28531(N) 077 18 17.62547(W)   ADJUSTED
 JV7216* NAD 83(2011) ELLIP HT-   137.609 (meters)        (06/27/12)   ADJUSTED
 JV7216* NAD 83(2011) EPOCH   -  2010.00
 JV7216* NAVD 88 ORTHO HEIGHT -   169.8   (meters)      557.    (feet) GPS OBS
 JV7216  ______________________________________________________________________
 JV7216  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7216  GEOID HEIGHT    -        -32.520 (meters)                     GEOID93
 JV7216  GEOID HEIGHT    -        -32.181 (meters)                     GEOID18
 JV7216  NAD 83(2011) X  -  1,085,834.017 (meters)                     COMP
 JV7216  NAD 83(2011) Y  - -4,820,145.983 (meters)                     COMP
 JV7216  NAD 83(2011) Z  -  4,020,028.858 (meters)                     COMP
 JV7216  LAPLACE CORR    -          6.26  (seconds)                    DEFLEC18
 JV7216
 JV7216  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7216  Standards:
 JV7216         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7216            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7216  -------------------------------------------------------------------
 JV7216  NETWORK    2.10   2.37           0.86   0.86   1.21     -0.08161165
 JV7216  -------------------------------------------------------------------
 JV7216  Click here for local accuracies and other accuracy information.
 JV7216
 JV7216.The horizontal coordinates were established by GPS observations
 JV7216.and adjusted by the National Geodetic Survey in June 2012.
 JV7216
 JV7216.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7216.been affixed to the stable North American tectonic plate. See 
 JV7216.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7216
 JV7216.The horizontal coordinates are valid at the epoch date displayed above
 JV7216.which is a decimal equivalence of Year/Month/Day.
 JV7216
 JV7216.The orthometric height was determined by GPS observations and a
 JV7216.high-resolution geoid model.
 JV7216
 JV7216.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7216.GEOID18 height accuracy estimate available here.
 JV7216
 JV7216.Click photographs - Photos may exist for this station.
 JV7216
 JV7216.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7216
 JV7216.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7216
 JV7216.The ellipsoidal height was determined by GPS observations
 JV7216.and is referenced to NAD 83.
 JV7216
 JV7216. The following values were computed from the NAD 83(2011) position.
 JV7216
 JV7216;                    North         East     Units Scale Factor Converg.
 JV7216;SPC MD       -   183,676.061   373,708.258   MT  0.99997997   -0 11 28.9
 JV7216;SPC MD       -   602,610.54  1,226,074.51   sFT  0.99997997   -0 11 28.9
 JV7216;UTM  18      - 4,354,922.755   301,309.048   MT  1.00008610   -1 27 39.6
 JV7216
 JV7216!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7216!SPC MD       -   0.99997841  x   0.99997997  =   0.99995838
 JV7216!UTM  18      -   0.99997841  x   1.00008610  =   1.00006451
 JV7216
 JV7216_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0130954922(NAD 83)
 JV7216
 JV7216                          SUPERSEDED SURVEY CONTROL
 JV7216
 JV7216  NAD 83(2007)-  39 19 15.28554(N)    077 18 17.62612(W) AD(2002.00) 0
 JV7216  ELLIP H (02/10/07)  137.631  (m)                       GP(2002.00)    
 JV7216  ELLIP H (08/30/02)  137.617  (m)                       GP(       ) 4 2
 JV7216  NAD 83(1991)-  39 19 15.28618(N)    077 18 17.62667(W) AD(       ) 1
 JV7216  ELLIP H (02/09/94)  137.564  (m)                       GP(       ) 4 1
 JV7216
 JV7216.Superseded values are not recommended for survey control.
 JV7216
 JV7216.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7216.See file dsdata.pdf to determine how the superseded data were derived.
 JV7216
 JV7216_STAMPING: GREEN 1993
 JV7216_MARK LOGO: MD-021
 JV7216_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7216+SATELLITE: SATELLITE OBSERVATIONS - November 05, 2002
 JV7216
 JV7216  HISTORY     - Date     Condition        Report By
 JV7216  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7216  HISTORY     - 20021105 GOOD             POWELL
 JV7216  HISTORY     - 20191107 MARK NOT FOUND   NGS
 JV7216
 JV7216                          STATION DESCRIPTION
 JV7216
 JV7216'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7216'FROM FREDERICK, MD, GO SOUTH ON I-270 TO THE MD RTE 80 EXIT. GO EAST
 JV7216'ON MD RTE 80 3.0 MILES (4.8 KM) TO THE INTERSECTION OF PRICES
 JV7216'DISTILLERY ROAD. TURN RIGHT AND PROCEED 1.8 MILES (2.9 KM) TO TOP OF
 JV7216'HILL AND STATION ON RIGHT. STATION IS 15 FEET (4.6 M) NORTHWEST OF
 JV7216'CENTERLINE OF PRICES DISTILLERY ROAD, 10 FEET (3.0 M) NORTH OF A
 JV7216'FENCE POST AND 30 FEET (9.1 M) NORTH OF THE CENTERLINE OF A TRUCK
 JV7216'PATH. STATION IS A BRASS DISK SET IN THE TOP OF AN 8 INCH ROUND
 JV7216'CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7216
 JV7216                          STATION RECOVERY (2002)
 JV7216
 JV7216'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7216'NO WITNESS POST
 JV7216
 JV7216                          STATION RECOVERY (2019)
 JV7216
 JV7216'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV7216'THE STATION IS LOCATED ABOUT 5.8 MI (9.3 KM) WEST-NORTHWEST OF
 JV7216'DAMASCUS, 4.7 MI (7.6 KM) SOUTH-SOUTHWEST OF NEW STATIONET AND 2.5 MI
 JV7216'(4.0 KM) EAST OF URBANA.  THE STATION WAS SEARCHED FOR.  REFERENCES
 JV7216'HAVE BEEN CHANGED AND PLACE THE MARK UNDER A LARGE LANDSCAPING
 JV7216'BOULDER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1582 ***********************************************************************
 HU1582  DESIGNATION -  GREEN 2
 HU1582  PID         -  HU1582
 HU1582  STATE/COUNTY-  MD/WORCESTER
 HU1582  COUNTRY     -  US
 HU1582  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1582
 HU1582                         *CURRENT SURVEY CONTROL
 HU1582  ______________________________________________________________________
 HU1582* NAD 83(1991) POSITION- 38 13 08.45075(N) 075 08 52.35009(W)   ADJUSTED
 HU1582* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU1582  ______________________________________________________________________
 HU1582  GEOID HEIGHT    -        -36.189 (meters)                     GEOID18
 HU1582  LAPLACE CORR    -          0.14  (seconds)                    DEFLEC18
 HU1582  HORZ ORDER      -  SECOND
 HU1582
 HU1582.The horizontal coordinates were established by classical geodetic methods
 HU1582.and adjusted by the National Geodetic Survey in January 1992.
 HU1582
 HU1582.The orthometric height was scaled from a topographic map.
 HU1582
 HU1582.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1582.GEOID18 height accuracy estimate available here.
 HU1582
 HU1582.Click photographs - Photos may exist for this station.
 HU1582
 HU1582.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1582
 HU1582. The following values were computed from the NAD 83(1991) position.
 HU1582
 HU1582;                    North         East     Units Scale Factor Converg.
 HU1582;SPC MD       -    62,958.538   562,183.016   MT  1.00001508   +1 09 44.8
 HU1582;SPC MD       -   206,556.47  1,844,428.78   sFT  1.00001508   +1 09 44.8
 HU1582;UTM  18      - 4,230,125.877   487,055.672   MT  0.99960206   -0 05 29.3
 HU1582
 HU1582!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1582!SPC MD       -   1.00000540  x   1.00001508  =   1.00002048
 HU1582!UTM  18      -   1.00000540  x   0.99960206  =   0.99960746
 HU1582
 HU1582:                Primary Azimuth Mark                     Grid Az
 HU1582:SPC MD       -  GREEN 2 AZ MK                            021 52 05.9
 HU1582:UTM  18      -  GREEN 2 AZ MK                            023 07 20.0
 HU1582
 HU1582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8705530125(NAD 83)
 HU1582
 HU1582|---------------------------------------------------------------------|
 HU1582| PID    Reference Object                     Distance      Geod. Az  |
 HU1582|                                                           dddmmss.s |
 HU1582| DC7336 GREEN 2 AZ MK                                      0230150.7 |
 HU1582| DC7337 GREEN 2 RM 1                                       05305     |
 HU1582| HU1578 PAL                                  24.080 METERS 16002     |
 HU1582|---------------------------------------------------------------------|
 HU1582
 HU1582                          SUPERSEDED SURVEY CONTROL
 HU1582
 HU1582  NAD 83(1986)-  38 13 08.43625(N)    075 08 52.38428(W) AD(       ) 2
 HU1582  NAD 27      -  38 13 08.01327(N)    075 08 53.70291(W) AD(       ) 2
 HU1582
 HU1582.Superseded values are not recommended for survey control.
 HU1582
 HU1582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1582.See file dsdata.pdf to determine how the superseded data were derived.
 HU1582
 HU1582_MARKER: DS = TRIANGULATION STATION DISK
 HU1582_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HU1582_STAMPING: GREEN 2 1958
 HU1582_MARK LOGO: CGS
 HU1582_PROJECTION: PROJECTING
 HU1582_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1582
 HU1582  HISTORY     - Date     Condition        Report By
 HU1582  HISTORY     - 1959     MONUMENTED       CGS
 HU1582  HISTORY     - 1961     GOOD             CGS
 HU1582  HISTORY     - 1962     POOR             CGS
 HU1582
 HU1582                          STATION DESCRIPTION
 HU1582
 HU1582'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (WER)
 HU1582'THE STATION IS APPROXIMATELY 8 MILES SOUTH-SOUTHWEST OF OCEAN
 HU1582'CITY, 7.5 MILES SOUTHEAST OF BERLIN AND ON ASSATEAGUE ISLAND.
 HU1582'
 HU1582'TO REACH FROM THE POST OFFICE IN OCEAN CITY, GO NORTH ON
 HU1582'BALTIMORE AVENUE FOR 0.15 MILE TO U.S. HIGHWAY 50.  TURN LEFT AND
 HU1582'GO WEST ON HIGHWAY 50 FOR 1.4 MILES TO THE JUNCTION WITH STATE
 HU1582'ROUTE 611.  TURN LEFT AND GO SOUTH ON ROUTE 611 FOR 3.8 MILES
 HU1582'TO THE JUNCTION WITH STATE ROUTE 376.  CONTINUE STRAIGHT AHEAD
 HU1582'ON ROUTE 611 FOR 6.55 MILES TO A GRAVEL SIDE ROAD LEFT.  TURN
 HU1582'LEFT AND GO EAST ON GRAVEL ROAD FOR 0.15 MILE TO THE OCEAN BEACH
 HU1582'FERRY LANDING.  CROSS FERRY AND FROM THE LANDING ON ASSATEAGUE
 HU1582'ISLAND, GO EAST ON BLACKTOP ROAD FOR 0.3 MILE TO BALTIMORE
 HU1582'BOULEVARD.  TURN LEFT AND GO NORTH ON BALTIMORE BOULEVARD FOR 1.1
 HU1582'MILES TO THE END OF BLACKTOP ROAD.  BEAR LEFT AND CONTINUE
 HU1582'NORTHERLY ACROSS SAND FOR 0.3 MILE TO TELEPHONE POLE NO. 1470
 HU1582'AND STATION TO THE NORTHEAST.
 HU1582'
 HU1582'STATION MARK, A STANDARD DISK STAMPED GREEN 2 1958, IS SET IN
 HU1582'CONCRETE AT THE CENTER OF A 4-INCH TERRACOTTA PIPE WHICH IS
 HU1582'SURROUNDED BY A MASS OF CONCRETE AND PROJECTS 6 INCHES.  IT IS
 HU1582'109 FEET SOUTHWEST OF TELEPHONE POLE NO. 1469 AND 71 FEET
 HU1582'NORTHEAST OF TELEPHONE POLE NO. 1470.  A STANDARD WITNESS POST
 HU1582'WAS SET 2 FEET EAST OF THE MARK.
 HU1582'
 HU1582'REFERENCE MARK NO. 1, A STANDARD DISK STAMPED GREEN 2 NO 1 1958,
 HU1582'IS SET IN CONCRETE AT THE CENTER OF A 4-INCH TERRACOTTA PIPE
 HU1582'WHICH IS SURROUNDED BY A MASS OF CONCRETE AND PROJECTS 6 INCHES.
 HU1582'IT IS 93 FEET NORTH-NORTHWEST OF TELEPHONE POLE NO. 1470 AND 62
 HU1582'FEET SOUTH-SOUTHWEST OF TELEPHONE POLE NO. 1469.
 HU1582'
 HU1582'REFERENCE MARK NO. 2, A STANDARD HYDROGRAPHIC STATION MARK
 HU1582'DISK STAMPED PAL 1942, IS SET IN A 4-INCH ROUND CONCRETE POST
 HU1582'WHICH PROJECTS 6 INCHES.  IT IS 9 FEET SOUTH OF TELEPHONE POLE
 HU1582'NO. 1470.
 HU1582'
 HU1582'AZIMUTH MARK, A STANDARD DISK STAMPED GREEN 1958, IS SET IN
 HU1582'CONCRETE AT THE CENTER OF A 4-INCH TERRACOTTA PIPE WHICH IS
 HU1582'SURROUNDED BY A MASS OF CONCRETE AND PROJECTS 6 INCHES.  IT IS
 HU1582'1 FOOT WEST OF TELEPHONE POLE NO. 1455.  A STANDARD WITNESS POST
 HU1582'WAS SET 1 FOOT NORTH OF THE MARK.
 HU1582'
 HU1582'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTHERLY ALONG
 HU1582'TELEPHONE LINE FOR 0.35 MILE TO TELEPHONE POLE NO. 1455 AND THE
 HU1582'MARK.
 HU1582
 HU1582                          STATION RECOVERY (1961)
 HU1582
 HU1582'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RMS)
 HU1582'STATION MARK, REFERENCE MARKS AND AZIMUTH MARK WERE RECOVERED IN
 HU1582'GOOD CONDITION.  THE DISTANCES TO THE REFERENCE MARKS WERE
 HU1582'VERIFIED.  THE PUBLISHED DESCRIPTION IS ADEQUATE.  THE WOODEN
 HU1582'STAND BUILT OVER THE STATION IN 1959 WAS IN GOOD REPAIR AT THE
 HU1582'TIME OF RECOVERY.
 HU1582
 HU1582                          STATION RECOVERY (1962)
 HU1582
 HU1582'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (CFO)
 HU1582'THE STATION MARK WAS RECOVERED AS DESCRIBED BUT FOUND TO BE IN
 HU1582'SUCH POOR CONDITION THAT ITS POSITION SHOULD BE CONSIDERED
 HU1582'LOST.  THE DISK WAS SET IN THE CENTER OF A 4-INCH TERRACOTTA
 HU1582'PIPE, FILLED WITH CEMENT AND ON TOP OF A STEEL ROD WHICH HAD
 HU1582'BEEN DRIVEN INTO THE GROUND.  THE MARCH 6TH 1962 STORM WASHED
 HU1582'THE SAND AWAY FROM THE MARK AND THE WEIGHT OF THE CEMENT FILLED
 HU1582'PIPE BENT THE ROD TO AN ANGLE OF APPROXIMATELY 45 DEGREES.
 HU1582'
 HU1582'REFERENCE MARK 1 WAS RECOVERED AND FOUND TO BE IN GOOD CONDITION.
 HU1582'
 HU1582'REFERENCE MARK 2, A HYDROGRAPHIC SURVEY DISK, STAMPED PAL 1942
 HU1582'WAS NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0380 ***********************************************************************
 HV0380  DESIGNATION -  GREEN 2 RM 1 USN
 HV0380  PID         -  HV0380
 HV0380  STATE/COUNTY-  MD/CALVERT
 HV0380  COUNTRY     -  US
 HV0380  USGS QUAD   -  COVE POINT (2016)
 HV0380
 HV0380                         *CURRENT SURVEY CONTROL
 HV0380  ______________________________________________________________________
 HV0380* NAD 83(1986) POSITION- 38 23 03.     (N) 076 22 56.     (W)   SCALED
 HV0380* NAVD 88 ORTHO HEIGHT -     0.732 (meters)        2.40  (feet) ADJUSTED
 HV0380  ______________________________________________________________________
 HV0380  GEOID HEIGHT    -        -34.494 (meters)                     GEOID18
 HV0380  DYNAMIC HEIGHT  -          0.732 (meters)        2.40  (feet) COMP
 HV0380  MODELED GRAVITY -    980,023.1   (mgal)                       NAVD 88
 HV0380
 HV0380  VERT ORDER      -  FIRST     CLASS II
 HV0380
 HV0380.The horizontal coordinates were scaled from a map and have
 HV0380.an estimated accuracy of +/- 6 seconds.
 HV0380
 HV0380.The orthometric height was determined by differential leveling and
 HV0380.adjusted by the NATIONAL GEODETIC SURVEY
 HV0380.in June 1991.
 HV0380
 HV0380.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0380.GEOID18 height accuracy estimate available here.
 HV0380
 HV0380.Click photographs - Photos may exist for this station.
 HV0380
 HV0380.The dynamic height is computed by dividing the NAVD 88
 HV0380.geopotential number by the normal gravity value computed on the
 HV0380.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0380.degrees latitude (g = 980.6199 gals.).
 HV0380
 HV0380.The modeled gravity was interpolated from observed gravity values.
 HV0380
 HV0380;                    North         East    Units  Estimated Accuracy
 HV0380;SPC MD       -    79,830.      453,980.      MT  (+/- 180 meters Scaled)
 HV0380
 HV0380_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH792493(NAD 83)
 HV0380
 HV0380                          SUPERSEDED SURVEY CONTROL
 HV0380
 HV0380  NGVD 29 (11/26/84)    0.977  (m)            3.21   (f) ADJUSTED    1 2
 HV0380
 HV0380.Superseded values are not recommended for survey control.
 HV0380
 HV0380.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0380.See file dsdata.pdf to determine how the superseded data were derived.
 HV0380
 HV0380_MARKER: DR = REFERENCE MARK DISK
 HV0380_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0380_STAMPING: GREEN 2 RM 1 1971
 HV0380_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0380+STABILITY: SURFACE MOTION
 HV0380
 HV0380  HISTORY     - Date     Condition        Report By
 HV0380  HISTORY     - 1971     MONUMENTED       USN
 HV0380  HISTORY     - 1971     GOOD             NGS
 HV0380
 HV0380                          STATION DESCRIPTION
 HV0380
 HV0380'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0380'AT COVE POINT.
 HV0380'AT COVE POINT, ABOUT 0.1 MILE SOUTH ALONG A SANDY BEACH FROM
 HV0380'THE COAST GUARD STATION, NEAR THE SOUTHEAST EDGE OF A WOODED
 HV0380'AREA, 59.3 FEET NORTHWEST OF THE STATION MARK DESCRIBED, 149.7
 HV0380'FEET NORTHEAST OF THE EAST CORNER OF A SMALL COTTAGE, 73.9
 HV0380'FEET WEST OF RM 2 DESCRIBED, SET IN THE TOP OF A CONCRETE
 HV0380'POST PROJECTING 7 INCHES ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0382 ***********************************************************************
 HV0382  DESIGNATION -  GREEN 2 RM 2 USN
 HV0382  PID         -  HV0382
 HV0382  STATE/COUNTY-  MD/CALVERT
 HV0382  COUNTRY     -  US
 HV0382  USGS QUAD   -  COVE POINT (2016)
 HV0382
 HV0382                         *CURRENT SURVEY CONTROL
 HV0382  ______________________________________________________________________
 HV0382* NAD 83(1986) POSITION- 38 23 03.     (N) 076 22 51.     (W)   SCALED
 HV0382* NAVD 88 ORTHO HEIGHT -     0.912 (meters)        2.99  (feet) ADJUSTED
 HV0382  ______________________________________________________________________
 HV0382  GEOID HEIGHT    -        -34.498 (meters)                     GEOID18
 HV0382  DYNAMIC HEIGHT  -          0.911 (meters)        2.99  (feet) COMP
 HV0382  MODELED GRAVITY -    980,023.0   (mgal)                       NAVD 88
 HV0382
 HV0382  VERT ORDER      -  FIRST     CLASS II
 HV0382
 HV0382.The horizontal coordinates were scaled from a map and have
 HV0382.an estimated accuracy of +/- 6 seconds.
 HV0382
 HV0382.The orthometric height was determined by differential leveling and
 HV0382.adjusted by the NATIONAL GEODETIC SURVEY
 HV0382.in June 1991.
 HV0382
 HV0382.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0382.GEOID18 height accuracy estimate available here.
 HV0382
 HV0382.Click photographs - Photos may exist for this station.
 HV0382
 HV0382.The dynamic height is computed by dividing the NAVD 88
 HV0382.geopotential number by the normal gravity value computed on the
 HV0382.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0382.degrees latitude (g = 980.6199 gals.).
 HV0382
 HV0382.The modeled gravity was interpolated from observed gravity values.
 HV0382
 HV0382;                    North         East    Units  Estimated Accuracy
 HV0382;SPC MD       -    79,830.      454,100.      MT  (+/- 180 meters Scaled)
 HV0382
 HV0382_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH793493(NAD 83)
 HV0382
 HV0382                          SUPERSEDED SURVEY CONTROL
 HV0382
 HV0382  NGVD 29 (11/26/84)    1.157  (m)            3.80   (f) ADJUSTED    1 2
 HV0382
 HV0382.Superseded values are not recommended for survey control.
 HV0382
 HV0382.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0382.See file dsdata.pdf to determine how the superseded data were derived.
 HV0382
 HV0382_MARKER: DR = REFERENCE MARK DISK
 HV0382_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0382_STAMPING: GREEN 2 RM 2 1971
 HV0382_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0382+STABILITY: SURFACE MOTION
 HV0382
 HV0382  HISTORY     - Date     Condition        Report By
 HV0382  HISTORY     - 1971     MONUMENTED       USN
 HV0382  HISTORY     - 1971     GOOD             NGS
 HV0382
 HV0382                          STATION DESCRIPTION
 HV0382
 HV0382'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0382'AT COVE POINT.
 HV0382'AT COVE POINT, ABOUT 0.1 MILE SOUTH ALONG A SANDY BEACH FROM
 HV0382'THE COAST GUARD STATION, 73.4 FEET NORTHEAST OF THE STATION
 HV0382'MARK DESCRIBED, 77 FEET NORTHWEST OF THE EDGE OF THE WATER,
 HV0382'9 1/2 FEET SOUTHWEST OF A CEDAR TREE, 73.9 FEET EAST OF RM 1
 HV0382'DESCRIBED, SET IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES
 HV0382'ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0381 ***********************************************************************
 HV0381  TIDAL BM    -  This is a Tidal Bench Mark.
 HV0381  DESIGNATION -  GREEN 2 USN
 HV0381  PID         -  HV0381
 HV0381  STATE/COUNTY-  MD/CALVERT
 HV0381  COUNTRY     -  US
 HV0381  USGS QUAD   -  COVE POINT (2016)
 HV0381
 HV0381                         *CURRENT SURVEY CONTROL
 HV0381  ______________________________________________________________________
 HV0381* NAD 83(1986) POSITION- 38 23 04.     (N) 076 22 53.     (W)   SCALED
 HV0381* NAVD 88 ORTHO HEIGHT -     1.097 (meters)        3.60  (feet) ADJUSTED
 HV0381  ______________________________________________________________________
 HV0381  GEOID HEIGHT    -        -34.496 (meters)                     GEOID18
 HV0381  DYNAMIC HEIGHT  -          1.097 (meters)        3.60  (feet) COMP
 HV0381  MODELED GRAVITY -    980,023.1   (mgal)                       NAVD 88
 HV0381
 HV0381  VERT ORDER      -  FIRST     CLASS II
 HV0381
 HV0381.The horizontal coordinates were scaled from a map and have
 HV0381.an estimated accuracy of +/- 6 seconds.
 HV0381
 HV0381.The orthometric height was determined by differential leveling and
 HV0381.adjusted by the NATIONAL GEODETIC SURVEY
 HV0381.in June 1991.
 HV0381
 HV0381.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0381.GEOID18 height accuracy estimate available here.
 HV0381
 HV0381.This Tidal Bench Mark is designated as VM 3210
 HV0381.by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES.
 HV0381
 HV0381.Click photographs - Photos may exist for this station.
 HV0381
 HV0381.The dynamic height is computed by dividing the NAVD 88
 HV0381.geopotential number by the normal gravity value computed on the
 HV0381.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0381.degrees latitude (g = 980.6199 gals.).
 HV0381
 HV0381.The modeled gravity was interpolated from observed gravity values.
 HV0381
 HV0381;                    North         East    Units  Estimated Accuracy
 HV0381;SPC MD       -    79,860.      454,050.      MT  (+/- 180 meters Scaled)
 HV0381
 HV0381_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH793493(NAD 83)
 HV0381
 HV0381                          SUPERSEDED SURVEY CONTROL
 HV0381
 HV0381  NGVD 29 (11/26/84)    1.343  (m)            4.41   (f) ADJUSTED    1 2
 HV0381
 HV0381.Superseded values are not recommended for survey control.
 HV0381
 HV0381.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0381.See file dsdata.pdf to determine how the superseded data were derived.
 HV0381
 HV0381_MARKER: DD = SURVEY DISK
 HV0381_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0381_STAMPING: GREEN 2 1971
 HV0381_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0381+STABILITY: SURFACE MOTION
 HV0381
 HV0381  HISTORY     - Date     Condition        Report By
 HV0381  HISTORY     - 1971     MONUMENTED       USN
 HV0381  HISTORY     - 1971     GOOD             NGS
 HV0381
 HV0381                          STATION DESCRIPTION
 HV0381
 HV0381'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0381'AT COVE POINT.
 HV0381'AT COVE POINT, ABOUT 0.1 MILE SOUTH ALONG A SANDY BEACH FROM THE
 HV0381'COAST GUARD STATION, 77 FEET NORTHWEST OF THE WATER LINE, 82.9
 HV0381'FEET SOUTHWEST OF A LONG 18-INCH TWIN CEDAR TREE, 1.3 FEET
 HV0381'NORTHWEST OF A METAL WITNESS POST, SET IN THE TOP OF A CONCRETE
 HV0381'POST PROJECTING 2 INCHES ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2177 ***********************************************************************
 HU2177  DESIGNATION -  GREEN AZ MK 2
 HU2177  PID         -  HU2177
 HU2177  STATE/COUNTY-  MD/WICOMICO
 HU2177  COUNTRY     -  US
 HU2177  USGS QUAD   -  WETIPQUIN (2016)
 HU2177
 HU2177                         *CURRENT SURVEY CONTROL
 HU2177  ______________________________________________________________________
 HU2177* NAD 83(1991) POSITION- 38 18 39.90594(N) 075 46 40.74646(W)   ADJUSTED
 HU2177* NAVD 88 ORTHO HEIGHT -     2.930 (meters)        9.61  (feet) ADJUSTED
 HU2177  ______________________________________________________________________
 HU2177  GEOID HEIGHT    -        -35.786 (meters)                     GEOID18
 HU2177  LAPLACE CORR    -         -1.35  (seconds)                    DEFLEC18
 HU2177  DYNAMIC HEIGHT  -          2.928 (meters)        9.61  (feet) COMP
 HU2177  MODELED GRAVITY -    979,997.6   (mgal)                       NAVD 88
 HU2177
 HU2177  HORZ ORDER      -  SECOND
 HU2177  VERT ORDER      -  SECOND    CLASS I
 HU2177
 HU2177.The horizontal coordinates were established by classical geodetic methods
 HU2177.and adjusted by the National Geodetic Survey in January 1992.
 HU2177
 HU2177.The orthometric height was determined by differential leveling and
 HU2177.adjusted by the NATIONAL GEODETIC SURVEY
 HU2177.in June 1991.
 HU2177
 HU2177.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2177.GEOID18 height accuracy estimate available here.
 HU2177
 HU2177.Click photographs - Photos may exist for this station.
 HU2177
 HU2177.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2177
 HU2177.The dynamic height is computed by dividing the NAVD 88
 HU2177.geopotential number by the normal gravity value computed on the
 HU2177.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2177.degrees latitude (g = 980.6199 gals.).
 HU2177
 HU2177.The modeled gravity was interpolated from observed gravity values.
 HU2177
 HU2177. The following values were computed from the NAD 83(1991) position.
 HU2177
 HU2177;                    North         East     Units Scale Factor Converg.
 HU2177;SPC MD       -    72,248.647   506,874.190   MT  0.99999809   +0 46 01.1
 HU2177;SPC MD       -   237,035.77  1,662,969.74   sFT  0.99999809   +0 46 01.1
 HU2177;UTM  18      - 4,240,617.739   431,984.044   MT  0.99965697   -0 28 56.3
 HU2177
 HU2177!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2177!SPC MD       -   1.00000516  x   0.99999809  =   1.00000325
 HU2177!UTM  18      -   1.00000516  x   0.99965697  =   0.99966212
 HU2177
 HU2177_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3198440617(NAD 83)
 HU2177
 HU2177                          SUPERSEDED SURVEY CONTROL
 HU2177
 HU2177  NAD 83(1986)-  38 18 39.90205(N)    075 46 40.76911(W) AD(       ) 2
 HU2177  NGVD 29               3.18   (m)           10.4    (f) LEVELING    3  
 HU2177  NGVD 29 (06/12/91)    3.184  (m)           10.45   (f) ADJUSTED    2 1
 HU2177
 HU2177.Superseded values are not recommended for survey control.
 HU2177
 HU2177.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2177.See file dsdata.pdf to determine how the superseded data were derived.
 HU2177
 HU2177_MARKER: DZ = AZIMUTH MARK DISK
 HU2177_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2177_STAMPING: GREEN 1932 NO 2 1987
 HU2177_MARK LOGO: NGS
 HU2177_PROJECTION: RECESSED 3 CENTIMETERS
 HU2177_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2177_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2177+STABILITY: SURFACE MOTION
 HU2177_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2177+SATELLITE: SATELLITE OBSERVATIONS - April 25, 2019
 HU2177
 HU2177  HISTORY     - Date     Condition        Report By
 HU2177  HISTORY     - 1987     MONUMENTED       NGS
 HU2177  HISTORY     - 1987     GOOD             NGS
 HU2177  HISTORY     - 19900308 GOOD             NGS
 HU2177  HISTORY     - 20190425 GOOD             PROFLN
 HU2177
 HU2177                          STATION DESCRIPTION
 HU2177
 HU2177'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU2177'THE STATION IS LOCATED ABOUT 10 KM (6.2 MI) WEST OF SALISBURY AND 4.8
 HU2177'KM (3.0 MI) NORTH OF WHITEHAVEN.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2177'
 HU2177'TO REACH THE STATION FROM POST OFFICE AT SALISBURY, GO WEST FOR 2.8 KM
 HU2177'(1.7 MI) ON U.S. HIGHWAY 50 TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 HU2177'WEST FOR 10.6 KM (6.6 MI) ON MD 349 TO A SIDE ROAD LEFT.  TURN LEFT
 HU2177'AND GO SOUTH FOR 7.15 KM (4.44 MI) ON MD 352 TO A CROSSROADS AND THE
 HU2177'STATION TO THE LEFT.
 HU2177'
 HU2177'THE STATION IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2177'STAMPED---GREEN 1932 NO 2 1987---, SET INTO THE TOP OF A ROUND
 HU2177'CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND.
 HU2177'LOCATED 5.4 M (17.7 FT) SOUTHWEST FROM THE CENTER OF GREEN HILL
 HU2177'CHURCH ROAD, 88.4 M (290.0 FT) SOUTHEAST FROM THE CENTER OF MD 352,
 HU2177'47.9 M (157.2 FT) SOUTHEAST FROM THE SOUTHEAST CORNER OF A TWO STORY
 HU2177'FARM HOUSE, 0.9 M (3.0 FT) NORTH FROM A POWER LINE POLE NUMBERED
 HU2177'41718 91202 AND 0.8 M (2.6 FT) NORTH FROM A CARSONITE WITNESS POST.
 HU2177'THE UNDERGROUND MARK IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2177'K STAMPED---GREEN 1932 NO 2 1987---, SET INTO AN IRREGULAR MASS OF
 HU2177'CONCRETE 1.0 M (3.3 FT) BELOW THE SURFACE.
 HU2177
 HU2177                          STATION RECOVERY (1987)
 HU2177
 HU2177'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987
 HU2177'RECOVERED IN GOOD CONDITION.
 HU2177
 HU2177                          STATION RECOVERY (1990)
 HU2177
 HU2177'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU2177'5.2 KM (3.23 MI) NORTHEASTERLY ALONG WHITEHAVEN ROAD FROM ITS
 HU2177'JUNCTION WITH CHURCH STREET IN WHITEHAVEN, 88.4 M (290.03 FT)
 HU2177'SOUTHEAST OF THE CENTERLINE OF THE ROAD, 47.9 M (157.15 FT) SOUTHEAST
 HU2177'OF THE EAST CORNER OF A HOUSE, 5.4 M (17.72 FT) SOUTHWEST OF THE
 HU2177'CENTER OF GREEN HILL CHURCH ROAD, 0.9 M (2.95 FT) NORTH OF UTILITY
 HU2177'POLE NUMBER 41718 91202 18B, 0.3 M (0.98 FT) BELOW THE LEVEL OF THE
 HU2177'ROAD, AND IN A CONCRETE MONUMENT THAT IS 0.1 M (0.33 FT) BELOW THE
 HU2177'GROUND SURFACE.
 HU2177
 HU2177                          STATION RECOVERY (2019)
 HU2177
 HU2177'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2177'RECOVERED AS DESCRIBED, COVERED BY GRASS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7614 ***********************************************************************
 DG7614  DESIGNATION -  GREEN AZ MK RESET
 DG7614  PID         -  DG7614
 DG7614  STATE/COUNTY-  MD/CAROLINE
 DG7614  COUNTRY     -  US
 DG7614  USGS QUAD   -  DENTON (2017)
 DG7614
 DG7614                         *CURRENT SURVEY CONTROL
 DG7614  ______________________________________________________________________
 DG7614* NAD 83(1986) POSITION- 38 58 38.8    (N) 075 48 05.9    (W)   HD_HELD2
 DG7614* NAVD 88 ORTHO HEIGHT -     6.406 (meters)       21.02  (feet) ADJUSTED
 DG7614  ______________________________________________________________________
 DG7614  GEOID HEIGHT    -        -34.613 (meters)                     GEOID18
 DG7614  DYNAMIC HEIGHT  -          6.403 (meters)       21.01  (feet) COMP
 DG7614  MODELED GRAVITY -    980,056.4   (mgal)                       NAVD 88
 DG7614
 DG7614  VERT ORDER      -  SECOND    CLASS I
 DG7614
 DG7614.The horizontal coordinates were established by autonomous hand held GPS
 DG7614.observations and have an estimated accuracy of +/- 10 meters.
 DG7614
 DG7614.The orthometric height was determined by differential leveling and
 DG7614.adjusted by the NATIONAL GEODETIC SURVEY
 DG7614.in December 2004.
 DG7614
 DG7614.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7614.GEOID18 height accuracy estimate available here.
 DG7614
 DG7614.Click photographs - Photos may exist for this station.
 DG7614
 DG7614.The dynamic height is computed by dividing the NAVD 88
 DG7614.geopotential number by the normal gravity value computed on the
 DG7614.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7614.degrees latitude (g = 980.6199 gals.).
 DG7614
 DG7614.The modeled gravity was interpolated from observed gravity values.
 DG7614
 DG7614;                    North         East    Units  Estimated Accuracy
 DG7614;SPC MD       -   146,184.      503,835.      MT  (+/- 10 meters HH2 GPS)
 DG7614
 DG7614_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3056214579(NAD 83)
 DG7614
 DG7614                          SUPERSEDED SURVEY CONTROL
 DG7614
 DG7614.No superseded survey control is available for this station.
 DG7614
 DG7614_MARKER: DD = SURVEY DISK
 DG7614_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DG7614_SP_SET: ROAD SHOULDER
 DG7614_STAMPING: GREEN AZ MK RESET 1986
 DG7614_MARK LOGO: MDSHA
 DG7614_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7614_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DG7614_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7614+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2006
 DG7614
 DG7614  HISTORY     - Date     Condition        Report By
 DG7614  HISTORY     - 1986     MONUMENTED       MDSHA
 DG7614  HISTORY     - 20021028 GOOD             MDSHA
 DG7614  HISTORY     - 20061215 GOOD             USPSQD
 DG7614
 DG7614                          STATION DESCRIPTION
 DG7614
 DG7614'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7614'THE STATION IS LOCATED IN THE TOWN OF GREENSBORO, AT THE NORTHEAST END
 DG7614'OF THE STATE HIGHWAY 313 BRIDGE OVER THE CHOPTANK RIVER, ABOUT 0.3 MI
 DG7614'(0.48 KM) NORTH OF THE INTERSECTION OF STATE HIGHWAY 313 AND STATE
 DG7614'HIGHWAY 314.  THE STATION IS A MARYLAND STATE SURVEY DISK SET IN A
 DG7614'DRILL HOLE IN THE CONCRETE SHOULDER, 17.0 FT (5.2 M) WEST OF THE
 DG7614'CENTER LINE OF THE HIGHWAY, 8.2 FT (2.5 M) SOUTHEAST OF THE NORTHERN
 DG7614'MOST END OF THE WEST BRIDGE WALL, 3.4 FT (1.0 M) EAST OF THE CONCRETE
 DG7614'BRIDGE WALL AND LEVEL WITH THE HIGHWAY.
 DG7614
 DG7614                          STATION RECOVERY (2006)
 DG7614
 DG7614'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 DG7614'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5824 ***********************************************************************
 HV5824  DESIGNATION -  GREEN HOUSE CENTER CHIMNEY
 HV5824  PID         -  HV5824
 HV5824  STATE/COUNTY-  MD/QUEEN ANNES
 HV5824  COUNTRY     -  US
 HV5824  USGS QUAD   -  QUEENSTOWN (2016)
 HV5824
 HV5824                         *CURRENT SURVEY CONTROL
 HV5824  ______________________________________________________________________
 HV5824* NAD 83(1991) POSITION- 38 58 03.86513(N) 076 13 26.14347(W)   ADJUSTED
 HV5824  ______________________________________________________________________
 HV5824  GEOID HEIGHT    -        -33.784 (meters)                     GEOID18
 HV5824  LAPLACE CORR    -         -4.15  (seconds)                    DEFLEC18
 HV5824  HORZ ORDER      -  THIRD
 HV5824
 HV5824.The horizontal coordinates were established by classical geodetic methods
 HV5824.and adjusted by the National Geodetic Survey in January 1992.
 HV5824
 HV5824.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5824.GEOID18 height accuracy estimate available here.
 HV5824
 HV5824.Click photographs - Photos may exist for this station.
 HV5824
 HV5824.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5824
 HV5824. The following values were computed from the NAD 83(1991) position.
 HV5824
 HV5824;                    North         East     Units Scale Factor Converg.
 HV5824;SPC MD       -   144,710.945   467,254.682   MT  0.99995113   +0 29 13.5
 HV5824;SPC MD       -   474,772.49  1,532,984.74   sFT  0.99995113   +0 29 13.5
 HV5824;UTM  18      - 4,313,908.974   393,968.051   MT  0.99973844   -0 46 11.2
 HV5824
 HV5824_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9396813908(NAD 83)
 HV5824
 HV5824                          SUPERSEDED SURVEY CONTROL
 HV5824
 HV5824  NAD 83(1986)-  38 58 03.86049(N)    076 13 26.15582(W) AD(       ) 3
 HV5824  NAD 27      -  38 58 03.46000(N)    076 13 27.32000(W) AD(       ) 3
 HV5824
 HV5824.Superseded values are not recommended for survey control.
 HV5824
 HV5824.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5824.See file dsdata.pdf to determine how the superseded data were derived.
 HV5824
 HV5824_MARKER: 85 = CHIMNEY
 HV5824_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV5824+SATELLITE: SATELLITE OBSERVATIONS - April 23, 2003
 HV5824
 HV5824  HISTORY     - Date     Condition        Report By
 HV5824  HISTORY     - 1932     FIRST OBSERVED   CGS
 HV5824  HISTORY     - 20030423 GOOD             USPSQD
 HV5824
 HV5824                          STATION DESCRIPTION
 HV5824
 HV5824'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (JAB)
 HV5824'STATION IS THE MIDDLE OF THREE CHIMNEYS, ON A GREEN HOUSE, THAT
 HV5824'SETS ABOUT 100 YARDS BACK FROM THE SW SIDE OF JACKSON CREEK.
 HV5824
 HV5824                          STATION RECOVERY (2003)
 HV5824
 HV5824'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HV5824'FROM EXIT 43A ON US ROUTE 50 W PROCEED .3 MILE ON THE SERVICE ROAD TO
 HV5824'JACKSON CREEK LANE.  TURN RIGHT AND PROCEED .15 MILES TO THE CREEK
 HV5824'COURT, TURN RIGHT AND PROCEED 150 FEET TO  HOUSE NUMBER 126 ON THE
 HV5824'RIGHT.  THE HOUSE IS NOW PAINTED GRAY WITH RED TIN ROOF.  THE HOUSE IS
 HV5824'OWNED BY THE COHEE FAMILY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1573 ***********************************************************************
 HU1573  DESIGNATION -  GREEN RUN
 HU1573  PID         -  HU1573
 HU1573  STATE/COUNTY-  MD/WORCESTER
 HU1573  COUNTRY     -  US
 HU1573  USGS QUAD   -  WHITTINGTON POINT (2016)
 HU1573
 HU1573                         *CURRENT SURVEY CONTROL
 HU1573  ______________________________________________________________________
 HU1573* NAD 83(1993) POSITION- 38 05 31.16780(N) 075 11 59.87119(W)   ADJUSTED
 HU1573* NAVD 88 ORTHO HEIGHT -     1.7   (meters)        6.    (feet) VERTCON3
 HU1573  ______________________________________________________________________
 HU1573  GEOID HEIGHT    -        -36.345 (meters)                     GEOID18
 HU1573  LAPLACE CORR    -          0.72  (seconds)                    DEFLEC18
 HU1573  HORZ ORDER      -  SECOND
 HU1573
 HU1573.The horizontal coordinates were established by classical geodetic methods
 HU1573.and adjusted by the National Geodetic Survey in November 1994.
 HU1573
 HU1573.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1573.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1573
 HU1573.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1573.GEOID18 height accuracy estimate available here.
 HU1573
 HU1573.Click photographs - Photos may exist for this station.
 HU1573
 HU1573.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1573
 HU1573. The following values were computed from the NAD 83(1993) position.
 HU1573
 HU1573;                    North         East     Units Scale Factor Converg.
 HU1573;SPC MD       -    48,770.153   557,900.382   MT  1.00004269   +1 07 47.2
 HU1573;SPC MD       -   160,006.74  1,830,378.17   sFT  1.00004269   +1 07 47.2
 HU1573;UTM  18      - 4,216,040.575   482,465.621   MT  0.99960379   -0 07 24.1
 HU1573
 HU1573!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1573!SPC MD       -   1.00000544  x   1.00004269  =   1.00004813
 HU1573!UTM  18      -   1.00000544  x   0.99960379  =   0.99960923
 HU1573
 HU1573:                Primary Azimuth Mark                     Grid Az
 HU1573:SPC MD       -  GREEN RUN AZ MK                          024 24 33.0
 HU1573:UTM  18      -  GREEN RUN AZ MK                          025 39 44.3
 HU1573
 HU1573_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8246516040(NAD 83)
 HU1573
 HU1573|---------------------------------------------------------------------|
 HU1573| PID    Reference Object                     Distance      Geod. Az  |
 HU1573|                                                           dddmmss.s |
 HU1573| HU1028 GREEN RUN AZ MK                                    0253220.2 |
 HU1573| DC7339 GREEN RUN RM 1                       17.998 METERS 02702     |
 HU1573| DC7340 GREEN RUN RM 2                       18.477 METERS 11848     |
 HU1573|---------------------------------------------------------------------|
 HU1573
 HU1573                          SUPERSEDED SURVEY CONTROL
 HU1573
 HU1573  NAD 83(1991)-  38 05 31.16646(N)    075 11 59.87148(W) AD(       ) 2
 HU1573  NAD 83(1986)-  38 05 31.15697(N)    075 11 59.90886(W) AD(       ) 2
 HU1573  NAD 27      -  38 05 30.72352(N)    075 12 01.22880(W) AD(       ) 2
 HU1573  NGVD 29 (07/19/86)    1.9    (m)            6.     (f) VERT ANG       
 HU1573
 HU1573.Superseded values are not recommended for survey control.
 HU1573
 HU1573.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1573.See file dsdata.pdf to determine how the superseded data were derived.
 HU1573
 HU1573_MARKER: DS = TRIANGULATION STATION DISK
 HU1573_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HU1573_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HU1573_STAMPING: GREEN RUN 1958
 HU1573_MARK LOGO: CGS
 HU1573
 HU1573  HISTORY     - Date     Condition        Report By
 HU1573  HISTORY     - 1959     MONUMENTED       CGS
 HU1573  HISTORY     - 1961     GOOD             CGS
 HU1573  HISTORY     - 1962     GOOD             CGS
 HU1573  HISTORY     - 1975     GOOD             NGS
 HU1573  HISTORY     - 20130227 GOOD             ARCSHE
 HU1573
 HU1573                          STATION DESCRIPTION
 HU1573
 HU1573'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (WER)
 HU1573'THE STATION IS APPROXIMATELY 5 MILES NORTHEAST OF THE
 HU1573'VIRGINIA-MARYLAND STATE LINE, 1.5 MILES EAST OF GREEN RUN BAY
 HU1573'AND ON ASSATEAGUE ISLAND.
 HU1573'
 HU1573'TO REACH FROM THE OCEAN BEACH FERRY LANDING ON ASSATEAGUE ISLAND,
 HU1573'GO EAST ON BLACKTOP ROAD FOR 0.3 MILE TO BALTIMORE BOULEVARD.  TURN
 HU1573'RIGHT AND GO SOUTH ON BALTIMORE BOULEVARD FOR 6.7 MILES TO THE
 HU1573'AZIMUTH MARK ON RIGHT BY TELEPHONE POLE.  CONTINUE SOUTH ON
 HU1573'BALTIMORE BOULEVARD FOR 0.75 MILE TO 80TH STREET AND THE STATION
 HU1573'IN THE NORTHWEST ANGLE.
 HU1573'
 HU1573'STATION MARK, A STANDARD DISK STAMPED GREEN RUN 1958, IS SET IN
 HU1573'CONCRETE AT THE CENTER OF A 4-INCH TERRACOTTA PIPE WHICH IS
 HU1573'SURROUNDED BY A MASS OF CONCRETE AND PROJECTS 3 INCHES.  IT IS
 HU1573'104 FEET WEST OF THE CENTER OF BALTIMORE BOULEVARD AND 87 FEET
 HU1573'WEST-SOUTHWEST OF A TELEPHONE POLE.  A STANDARD WITNESS POST
 HU1573'WAS SET 1.5 FEET WEST OF THE MARK.
 HU1573'
 HU1573'REFERENCE MARK NO. 1, A STANDARD DISK STAMPED GREEN RUN NO 1
 HU1573'1958, IS SET IN A SQUARE CONCRETE POST WHICH PROJECTS 2 INCHES.  IT
 HU1573'IS 104 FEET WEST OF THE CENTER OF BALTIMORE BOULEVARD AND 77
 HU1573'FEET WEST-NORTHWEST OF A TELEPHONE POLE.
 HU1573'
 HU1573'REFERENCE MARK NO. 2, A STANDARD DISK STAMPED GREEN RUN NO 2
 HU1573'1958, IS SET IN A SQUARE CONCRETE POST WHICH PROJECTS 2 INCHES.  IT
 HU1573'IS 48 FEET SOUTHWEST OF A TELEPHONE POLE AND 41.5 FEET WEST OF
 HU1573'THE CENTER OF BALTIMORE BOULEVARD.
 HU1573'
 HU1573'AZIMUTH MARK, A STANDARD DISK STAMPED GREEN RUN 1958, IS SET IN
 HU1573'CONCRETE AT THE CENTER OF A 4-INCH TERRACOTTA PIPE WHICH IS
 HU1573'SURROUNDED BY A MASS OF CONCRETE AND PROJECTS 3 INCHES.  IT IS 25
 HU1573'FEET WEST-NORTHWEST OF THE CENTER OF BALTIMORE BOULEVARD AND 2
 HU1573'FEET SOUTH-SOUTHWEST OF A TELEPHONE POLE.  A STANDARD WITNESS
 HU1573'POST WAS SET 2 FEET WEST-NORTHWEST OF THE MARK.
 HU1573
 HU1573                          STATION RECOVERY (1961)
 HU1573
 HU1573'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RMS)
 HU1573'STATION MARK AND REFERENCE MARKS 1 AND 2 AND THE AZIMUTH MARK
 HU1573'WERE RECOVERED IN GOOD CONDITION.  THE DISTANCE TO THE REFERENCE
 HU1573'MARKS WERE VERIFIED.  THE PUBLISHED DESCRIPTION IS ADEQUATE WITH
 HU1573'THE FOLLOWING ADDITIONS--THE AZIMUTH IS AT THE INTERSECTIONS OF
 HU1573'BALTIMORE BLVD. AND S 71ST. STREET AND 2 FOOT SOUTH-SOUTHWEST OF
 HU1573'TELEPHONE POLE NO. T-1748.
 HU1573
 HU1573                          STATION RECOVERY (1962)
 HU1573
 HU1573'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1573'THE STATION, AZIMUTH MARK AND REFERENCE MARKS 1 AND 2 WERE
 HU1573'RECOVERED AS DESCRIBED AND FOUND TO BE IN GOOD CONDITION.
 HU1573'
 HU1573'THE STATION IS A STANDARD DISK STAMPED GREEN RUN 1958, SET IN THE
 HU1573'TOP OF A 6 INCH TILE FILLED WITH CONCRETE, PROJECTING 6 INCHES FROM
 HU1573'THE GROUND.  IT IS 1.4 FEET EAST OF A STANDARD METAL WITNESS POST.
 HU1573'
 HU1573'REFERENCE MARK NO. 1 IS A STANDARD DISK STAMPED GREEN RUN NO. 1
 HU1573'1958, SET IN A 10 X 10 INCH SQUARE CONCRETE MONUMENT, PROJECTING
 HU1573'3 INCHES FROM THE GROUND.  IT IS 59.3 FEET SOUTH OF A STANDARD
 HU1573'METAL WITNESS POST.
 HU1573'
 HU1573'REFERENCE MARK NO. 2 IS A STANDARD DISK STAMPED GREEN RUN NO. 2
 HU1573'1958, SET IN THE TOP OF A CONCRETE MONUMENT, THAT IS FLUSH WITH
 HU1573'THE GROUND.  IT IS 62.1 FEET EAST OF A STANDARD METAL WITNESS
 HU1573'POST.
 HU1573'
 HU1573'AZIMUTH MARK IS A STANDARD DISK STAMPED GREEN RUN 1958, SET IN
 HU1573'THE TOP OF A 4 INCH TILE FILLED WITH CONCRETE, THAT IS 6 INCHES
 HU1573'BELOW THE GROUND SURFACE.  IT IS 1.9 FEET EAST OF A STANDARD METAL
 HU1573'WITNESS POST.  1.6 FEET SOUTH OF A TELEPHONE POLE NUMBER
 HU1573'T-1748.  84.0 FEET NORTHWEST OF POWERLINE-POLE NUMBER Q233.
 HU1573'
 HU1573'HEIGHT OF LIGHT ABOVE STATION MARK 4.7 METERS.
 HU1573
 HU1573                          STATION RECOVERY (1975)
 HU1573
 HU1573'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (EAB)
 HU1573'THE STATION MARK WAS RECOVERED AND IT WAS FOUND TO BE IN GOOD
 HU1573'CONDITION.  IT IS STAMPED GREEN RUN 1958.  THE STATION MARK IS
 HU1573'157.3 FEET WEST SOUTHWEST OF POWER POLE Q 350, 195.5 FEET
 HU1573'NORTHWEST OF A POWER POLE WITH NO NUMBER, 96 FEET WEST OF THE
 HU1573'CENTERLINE OF A SAND TRACK ROAD, 1.5 FEET WEST OF A 1-1/2 INCH
 HU1573'PIPE THAT IS PROJECTING ABOUT 18 INCHES, 1 FOOT SOUTH OF A STEEL
 HU1573'WITNESS POST AND SIGN AND THE MARK IS PROJECTING ABOUT 3
 HU1573'INCHES.
 HU1573'
 HU1573'REFERENCE MARK NO 1 WAS RECOVERED AND IT WAS FOUND TO BE IN GOOD
 HU1573'CONDITION.  IT IS 195.8 FEET SOUTHWEST OF POWER POLE Q 350, 97
 HU1573'FEET WEST OF THE CENTER LINE OF A SAND ROAD AND THE MARK IS ABOUT
 HU1573'1 INCH BELOW THE GROUND LEVEL.
 HU1573'
 HU1573'REFERENCE MARK NO 2 WAS RECOVERED AND IT WAS FOUND TO BE IN
 HU1573'GOOD CONDITION.  IT IS 163.5 FEET SOUTHWEST OF POWER POLE Q 350,
 HU1573'150.5 FEET NORTHWEST OF ANOTHER POWER POLE THAT HAS NO NUMBER,
 HU1573'55.5 FEET WEST OF THE CENTER LINE OF THE SAND TRACK ROAD AND
 HU1573'ABOUT 4 INCHES BELOW THE GROUND LEVEL.
 HU1573'
 HU1573'AZIMUTH MARK WAS RECOVERED AND IT WAS FOUND TO BE IN GOOD
 HU1573'CONDITION.  IT IS 84.5 FEET NORTH NORTHWEST OF POWER POLE T-165,
 HU1573'225 FEET SOUTH SOUTHWEST OF ANOTHER POWER POLE WITH NO NUMBER, 1
 HU1573'FOOT EAST OF A STEEL WITNESS POST AND ABOUT 3 FEET BELOW THE
 HU1573'GROUND LEVEL.
 HU1573'
 HU1573'THIS STATION SITE IS ON PROPERTY OWNED BY THE U.S. GOVERNMENT
 HU1573'AND IT IS MANAGED BY THE ASSATEAGUE NATIONAL SEASHORE AND PARK
 HU1573'SERVICE.  THIS OFFICE IS LOCATED ABOUT 12 MILES NORTH OF THIS
 HU1573'STATION SITE, PERMISSISN IS REQUIRED AND PERHAPS A KEY WILL BE
 HU1573'NEEDED.
 HU1573'
 HU1573'TO REACH THE STATION FROM ABOUT 6 MILES SOUTHEAST OF THE TOWN OF
 HU1573'BERLIN, AT THE ASSATEAGUE ISLAND NATIONAL SEASHORE AND PARK
 HU1573'SERVICE OFFICE, GO SOUTHEAST FOLLOWING STATE ROAD 611 AND OVER
 HU1573'A CONCRETE BRIDGE OVER THE SINEPUXENT BAY INLET FOR 1.2 MILES
 HU1573'TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHERLY FOR 2.6
 HU1573'MILES TO A RANGER GUARD SHELTER IN THE CENTER OF THE ROAD.  FROM
 HU1573'HERE ON A FOUR WHEEL DRIVE VEHICLE SHOULD BE USED.  CONTINUE ON
 HU1573'SOUTHERLY FOR 7.6 MILES TO THE AZIMUTH MARK ON THE RIGHT AND
 HU1573'POWER POLE T-165 ON THE LEFT.  CONTINUE ON SOUTHERLY FOR 0.85
 HU1573'MILE TO THE STATION SITE ON THE RIGHT, POWER POLE Q 350 ON
 HU1573'THE LEFT AND THIS IS ABOUT 0.25 MILE NORTH OF TWO PILLARS,
 HU1573'ONE ON THE EAST SIDE OF THE TRACK ROAD AND ONE ON THE WEST SIDE
 HU1573'OF THE TRACK ROAD.
 HU1573
 HU1573                          STATION RECOVERY (2013)
 HU1573
 HU1573'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU1573'THE POWER LINE AND POLES HAVE BEEN REMOVED AND BAYBERRY ROAD IS NOW
 HU1573'OVERGROWN.
 HU1573'
 HU1573'THE MARK IS LOCATED ABOUT 11.7 MI (18.8 KM) EAST-NORTHEAST OF
 HU1573'STOCKTON, 10.8 MI (17.4 KM) EAST OF GIRDLETREE AND 8.3 MI (13.4 KM)
 HU1573'EAST OF BOXIRON ON ASSATEAGUE ISLAND.  OWNERSHIP--U.S. GOVERNMENT.
 HU1573'
 HU1573'TO REACH FROM THE SOUTHEAST END OF THE VERRAZANO BRIDGE OVER
 HU1573'SINEPUXENT BAY, GO SOUTHEAST ON MD 611 FOR 0.6 MI (1.0 KM) TO A SIDE
 HU1573'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ON STEPHEN DECATUR
 HU1573'MEMORIAL ROAD/BAYBERRY DRIVE FOR 3.5 MI (5.6 KM) TO A TRAFFIC CIRCLE.
 HU1573'TAKE THE SECOND EXIT SOUTH TOWARD THE NATIONAL SEASHORE AND CONTINUE
 HU1573'SOUTH-SOUTHWEST ON A PAVED ROAD TO THE END.  ACTIVATE FOUR-WHEEL DRIVE
 HU1573'AND CONTINUE SOUTH-SOUTHWEST ON THE SAND ROAD/BEACH FOR 7.06 MI (11.4
 HU1573'KM) AND PARK THE VEHICLE.  PACK NORTHWEST FOR 820 FT (249.9 M) TO THE
 HU1573'MARK IN A AREA OF SMALL PINE TREES.
 HU1573'
 HU1573'IT IS 96 FT (29.3 M) WEST OF THE CENTERLINE OF AN OVERGROWN SAND TRACK
 HU1573'ROAD, 1.5 FT (0.5 M) WEST OF A 1-1/2 INCH (4 CM) PIPE THAT IS
 HU1573'PROJECTING ABOUT 18 INCHES (46 CM) AND 1 FT (0.3 M) SOUTH OF A STEEL
 HU1573'WITNESS POST AND SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1028 ***********************************************************************
 HU1028  DESIGNATION -  GREEN RUN AZ MK
 HU1028  PID         -  HU1028
 HU1028  STATE/COUNTY-  MD/WORCESTER
 HU1028  COUNTRY     -  US
 HU1028  USGS QUAD   -  WHITTINGTON POINT (2016)
 HU1028
 HU1028                         *CURRENT SURVEY CONTROL
 HU1028  ______________________________________________________________________
 HU1028* NAD 83(1986) POSITION- 38 06 08.3    (N) 075 11 37.4    (W)   HD_HELD2
 HU1028* NAVD 88 ORTHO HEIGHT -     0.653 (meters)        2.14  (feet) ADJUSTED
 HU1028  ______________________________________________________________________
 HU1028  GEOID HEIGHT    -        -36.332 (meters)                     GEOID18
 HU1028  DYNAMIC HEIGHT  -          0.652 (meters)        2.14  (feet) COMP
 HU1028  MODELED GRAVITY -    979,982.5   (mgal)                       NAVD 88
 HU1028
 HU1028  VERT ORDER      -  SECOND    CLASS I
 HU1028
 HU1028.The horizontal coordinates were established by autonomous hand held GPS
 HU1028.observations and have an estimated accuracy of +/- 10 meters.
 HU1028
 HU1028.The orthometric height was determined by differential leveling and
 HU1028.adjusted by the NATIONAL GEODETIC SURVEY
 HU1028.in June 1991.
 HU1028
 HU1028.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1028.GEOID18 height accuracy estimate available here.
 HU1028
 HU1028.Click photographs - Photos may exist for this station.
 HU1028
 HU1028.The dynamic height is computed by dividing the NAVD 88
 HU1028.geopotential number by the normal gravity value computed on the
 HU1028.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1028.degrees latitude (g = 980.6199 gals.).
 HU1028
 HU1028.The modeled gravity was interpolated from observed gravity values.
 HU1028
 HU1028;                    North         East    Units  Estimated Accuracy
 HU1028;SPC MD       -    49,926.      558,425.      MT  (+/- 10 meters HH2 GPS)
 HU1028
 HU1028_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8301517183(NAD 83)
 HU1028
 HU1028                          SUPERSEDED SURVEY CONTROL
 HU1028
 HU1028  NGVD 29 (11/26/84)    0.894  (m)            2.93   (f) ADJUSTED    2 1
 HU1028
 HU1028.Superseded values are not recommended for survey control.
 HU1028
 HU1028.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1028.See file dsdata.pdf to determine how the superseded data were derived.
 HU1028
 HU1028_MARKER: DZ = AZIMUTH MARK DISK
 HU1028_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1028_STAMPING: GREEN RUN 1958
 HU1028_MARK LOGO: CGS
 HU1028_PROJECTION: RECESSED 41 CENTIMETERS
 HU1028_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1028+STABILITY: SURFACE MOTION
 HU1028_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1028+SATELLITE: SATELLITE OBSERVATIONS - April 23, 2014
 HU1028
 HU1028  HISTORY     - Date     Condition        Report By
 HU1028  HISTORY     - 1958     MONUMENTED       CGS
 HU1028  HISTORY     - 1977     GOOD             NGS
 HU1028  HISTORY     - 1989     MARK NOT FOUND   USPSQD
 HU1028  HISTORY     - 20140423 GOOD             ARCSHE
 HU1028
 HU1028                          STATION DESCRIPTION
 HU1028
 HU1028'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1028'IN ASSATEAGUE ISLAND.
 HU1028'5.5 MILES NORTHEAST ALONG THE SERVICE ROAD FROM THE STATE LINE ON
 HU1028'ASSATEAGUE ISLAND, 144 FEET NORTHWEST OF THE CENTERLINE OF THE ROAD,
 HU1028'98 FEET SOUTHWEST OF THE CENTERLINE OF A DIRT ROAD, 85 FEET NORTH
 HU1028'OF POWERLINE POLE 333 AND CABLE JUNCTION BOX 165, 2 FEET SOUTHEAST
 HU1028'OF A WITNESS POST.
 HU1028
 HU1028                          STATION RECOVERY (1989)
 HU1028
 HU1028'RECOVERY NOTE BY US POWER SQUADRON 1989 (RBD)
 HU1028'MARK NOT FOUND.
 HU1028
 HU1028                          STATION RECOVERY (2014)
 HU1028
 HU1028'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HU1028'THE MARK IS LOCATED ABOUT 11.5 MI (18.5 KM) SOUTH-SOUTHEAST OF NEWARK,
 HU1028'11.1 MI (17.9 KM) EAST OF GIRDLETREE AND 8.5 MI (13.7 KM) EAST OF
 HU1028'BOXIRON ON ASSATEAGUE ISLAND.  OWNERSHIP--U.S. PARK SERVICE.
 HU1028'
 HU1028'TO REACH FROM THE SOUTHEAST END OF THE VERAZZANO BRIDGE ON STATE ROUTE
 HU1028'611, GO SOUTHEAST ON ROUTE 611 FOR 0.62 MI (1.0 KM) TO A SIDE ROAD ON
 HU1028'THE RIGHT.  TURN RIGHT AND GO SOUTHEAST ON BAYBERRY DRIVE FOR 3.68 MI
 HU1028'(5.9 KM) TO THE END OF THE PAVED ROAD.  ACTIVATE FOUR-WHEEL DRIVE AND
 HU1028'CONTINUE SOUTHEAST ON A SAND ROAD/BEACH FOR 6.29 MI (10.1 KM) AND PARK
 HU1028'VEHICLE.  PACK NORTHWEST ACROSS DUNES FOR 0.13 MI (0.2 KM) TO THE MARK
 HU1028'ON THE SOUTH SIDE OF A SMALL GRASSY DUNE.
 HU1028'
 HU1028'IT IS 2.0 FT (0.6 M) SOUTHEAST OF A FIBERGLASS WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6766 ***********************************************************************
 JV6766  DESIGNATION -  GREEN SPRING
 JV6766  PID         -  JV6766
 JV6766  STATE/COUNTY-  MD/HARFORD
 JV6766  COUNTRY     -  US
 JV6766  USGS QUAD   -  ABERDEEN (2016)
 JV6766
 JV6766                         *CURRENT SURVEY CONTROL
 JV6766  ______________________________________________________________________
 JV6766* NAD 83(2011) POSITION- 39 35 07.57818(N) 076 12 17.37227(W)   ADJUSTED
 JV6766* NAD 83(2011) ELLIP HT-    81.397 (meters)        (06/27/12)   ADJUSTED
 JV6766* NAD 83(2011) EPOCH   -  2010.00
 JV6766* NAVD 88 ORTHO HEIGHT -   114.3   (meters)      375.    (feet) VERTCON3
 JV6766  ______________________________________________________________________
 JV6766  GEOID HEIGHT    -        -32.914 (meters)                     GEOID18
 JV6766  NAD 83(2011) X  -  1,173,713.798 (meters)                     COMP
 JV6766  NAD 83(2011) Y  - -4,780,244.588 (meters)                     COMP
 JV6766  NAD 83(2011) Z  -  4,042,670.417 (meters)                     COMP
 JV6766  LAPLACE CORR    -         -2.40  (seconds)                    DEFLEC18
 JV6766
 JV6766  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6766  Standards:
 JV6766         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6766            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6766  -------------------------------------------------------------------
 JV6766  NETWORK    1.56   3.74           0.68   0.54   1.91      0.46788588
 JV6766  -------------------------------------------------------------------
 JV6766  Click here for local accuracies and other accuracy information.
 JV6766
 JV6766.The horizontal coordinates were established by GPS observations
 JV6766.and adjusted by the National Geodetic Survey in June 2012.
 JV6766
 JV6766.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6766.been affixed to the stable North American tectonic plate. See 
 JV6766.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6766
 JV6766.The horizontal coordinates are valid at the epoch date displayed above
 JV6766.which is a decimal equivalence of Year/Month/Day.
 JV6766
 JV6766.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6766.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6766
 JV6766.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6766.GEOID18 height accuracy estimate available here.
 JV6766
 JV6766.Click photographs - Photos may exist for this station.
 JV6766
 JV6766.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6766
 JV6766.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6766
 JV6766.The ellipsoidal height was determined by GPS observations
 JV6766.and is referenced to NAD 83.
 JV6766
 JV6766. The following values were computed from the NAD 83(2011) position.
 JV6766
 JV6766;                    North         East     Units Scale Factor Converg.
 JV6766;SPC MD       -   213,298.471   468,312.798   MT  1.00002650   +0 29 56.7
 JV6766;SPC MD       -   699,796.73  1,536,456.24   sFT  1.00002650   +0 29 56.7
 JV6766;UTM  18      - 4,382,439.837   396,535.773   MT  0.99973179   -0 46 04.1
 JV6766
 JV6766!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6766!SPC MD       -   0.99998723  x   1.00002650  =   1.00001373
 JV6766!UTM  18      -   0.99998723  x   0.99973179  =   0.99971902
 JV6766
 JV6766_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9653582439(NAD 83)
 JV6766
 JV6766                          SUPERSEDED SURVEY CONTROL
 JV6766
 JV6766  NAD 83(2007)-  39 35 07.57817(N)    076 12 17.37300(W) AD(2002.00) 0
 JV6766  ELLIP H (02/10/07)   81.407  (m)                       GP(2002.00)    
 JV6766  ELLIP H (09/18/02)   81.422  (m)                       GP(       ) 4 2
 JV6766  NAD 83(1991)-  39 35 07.57783(N)    076 12 17.37340(W) AD(       ) 1
 JV6766  ELLIP H (01/27/92)   81.411  (m)                       GP(       ) 4 1
 JV6766  NAD 83(1986)-  39 35 07.57103(N)    076 12 17.37973(W) AD(       ) 1
 JV6766  NGVD 29 (06/18/91)  114.6    (m)  UNKNOWN  model used  GPS OBS        
 JV6766
 JV6766.Superseded values are not recommended for survey control.
 JV6766
 JV6766.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6766.See file dsdata.pdf to determine how the superseded data were derived.
 JV6766
 JV6766_MARKER: DD = SURVEY DISK
 JV6766_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6766_STAMPING: 45 GREEN SPRING 1989
 JV6766_MARK LOGO: MD-025
 JV6766_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6766_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6766+STABILITY: SURFACE MOTION
 JV6766_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6766+SATELLITE: SATELLITE OBSERVATIONS - February 18, 2013
 JV6766
 JV6766  HISTORY     - Date     Condition        Report By
 JV6766  HISTORY     - 1989     MONUMENTED       RDA
 JV6766  HISTORY     - 20130218 GOOD             GPSSS
 JV6766
 JV6766                          STATION DESCRIPTION
 JV6766
 JV6766'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6766'THE STATION IS LOCATED IN EASTERN HARFORD COUNTY, MARYLAND ABOUT 4
 JV6766'MILES NORTHEAST OF THE VILLAGE OF ABERDEEN.
 JV6766'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 95 AND
 JV6766'STATE HIGHWAY 155 PROCEED WEST ALONG HIGHWAY 155 2.75 MILES TO ITS
 JV6766'INTERSECTION WITH STATE HIGHWAY 161.  TURN RIGHT AND PROCEED NORTH
 JV6766'ALONG HIGHWAY 161 150 FEET TO ITS INTERSECTION WITH LEVEL VILLAGE
 JV6766'ROAD.  TURN LEFT AND PROCEED WEST ALONG LEVEL VILLAGE ROAD 0.4 MILES
 JV6766'TO ITS INTERSECTION OF OLD LEVEL ROAD.  TURN RIGHT AND PROCEED WEST
 JV6766'ALONG OLD LEVEL ROAD 0.7 MILES ITS INTERSECTION WITH GREEN SPRING ROAD
 JV6766'AND THE STATION ON THE RIGHT IN FRONT OF THE CHURCH OF JESUS CHRIST.
 JV6766'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6766'ABOUT 1 INCH BELOW GROUND STAMPED 45 GREEN SPRING 1989.  THE STATION
 JV6766'IS 38.3 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE CHURCH, 36.2
 JV6766'FEET NORTHEAST OF THE CENTERLINE OF OLD LEVEL ROAD, 28.3 FEET
 JV6766'SOUTHEAST OF THE CENTERLINE OF GREEN SPRING ROAD.
 JV6766
 JV6766                          STATION RECOVERY (2013)
 JV6766
 JV6766'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (MB)
 JV6766'RECOVERED BY MIKE BUTLER, DEWEY LILLY AND MIKE ESTES OF NORTHERN BAY
 JV6766'LAND PLANNING, ENGINEERING AND SURVEYING CORP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6767 ***********************************************************************
 JV6767  DESIGNATION -  GREEN SPRING AZ MK
 JV6767  PID         -  JV6767
 JV6767  STATE/COUNTY-  MD/HARFORD
 JV6767  COUNTRY     -  US
 JV6767  USGS QUAD   -  ABERDEEN (2016)
 JV6767
 JV6767                         *CURRENT SURVEY CONTROL
 JV6767  ______________________________________________________________________
 JV6767* NAD 83(1991) POSITION- 39 35 07.51453(N) 076 12 24.70906(W)   NO CHECK
 JV6767* NAVD 88 ORTHO HEIGHT -   111.    (meters)      364.    (feet) VERTCON3
 JV6767  ______________________________________________________________________
 JV6767  GEOID HEIGHT    -        -32.912 (meters)                     GEOID18
 JV6767  LAPLACE CORR    -         -2.39  (seconds)                    DEFLEC18
 JV6767  HORZ ORDER      -  SECOND
 JV6767
 JV6767.The horizontal coordinates were established by classical geodetic methods
 JV6767.and adjusted by the National Geodetic Survey in January 1992.
 JV6767
 JV6767.No horizontal observational check was made to the station.
 JV6767
 JV6767.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6767.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6767
 JV6767.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6767.GEOID18 height accuracy estimate available here.
 JV6767
 JV6767.Click photographs - Photos may exist for this station.
 JV6767
 JV6767.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6767
 JV6767. The following values were computed from the NAD 83(1991) position.
 JV6767
 JV6767;                    North         East     Units Scale Factor Converg.
 JV6767;SPC MD       -   213,294.985   468,137.737   MT  1.00002650   +0 29 52.1
 JV6767;SPC MD       -   699,785.30  1,535,881.89   sFT  1.00002650   +0 29 52.1
 JV6767;UTM  18      - 4,382,440.222   396,360.729   MT  0.99973224   -0 46 08.8
 JV6767
 JV6767!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6767!SPC MD       -   0.99998780  x   1.00002650  =   1.00001430
 JV6767!UTM  18      -   0.99998780  x   0.99973224  =   0.99972004
 JV6767
 JV6767_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9636082440(NAD 83)
 JV6767
 JV6767                          SUPERSEDED SURVEY CONTROL
 JV6767
 JV6767  NAD 83(1986)-  39 35 07.50781(N)    076 12 24.71539(W) AD(       ) 2
 JV6767  NGVD 29 (06/18/91)  111.     (m)          364.     (f) VERT ANG       
 JV6767
 JV6767.Superseded values are not recommended for survey control.
 JV6767
 JV6767.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6767.See file dsdata.pdf to determine how the superseded data were derived.
 JV6767
 JV6767_MARKER: DZ = AZIMUTH MARK DISK
 JV6767_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6767_STAMPING: 45 GREEN SPRING 1989
 JV6767_MARK LOGO: MD-025
 JV6767_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6767_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6767+STABILITY: SURFACE MOTION
 JV6767_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6767+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6767
 JV6767  HISTORY     - Date     Condition        Report By
 JV6767  HISTORY     - 1989     MONUMENTED       RDA
 JV6767
 JV6767                          STATION DESCRIPTION
 JV6767
 JV6767'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6767'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED WEST ALONG OLD
 JV6767'LEVEL ROAD 0.11 MILE TO THE MARK ON THE LEFT.
 JV6767'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6767'ABOUT 1 INCH BELOW GROUND STAMPED 45 GREEN SPRING 1989.  THE MARK IS
 JV6767'13.2 FEET SOUTHWEST OF THE CENTERLINE OF OLD LEVEL ROAD, 11.6 FEET
 JV6767'NORTHEAST OF WHITE BOARD FENCE, 3.4 FEET NORTHWEST OF B G AND E POWER
 JV6767'POLE NUMBER 234632 AND 574.37 FEET FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6907 ***********************************************************************
 JV6907  DESIGNATION -  GREENBELT
 JV6907  PID         -  JV6907
 JV6907  STATE/COUNTY-  MD/PRINCE GEORGES
 JV6907  COUNTRY     -  US
 JV6907  USGS QUAD   -  LAUREL (2016)
 JV6907
 JV6907                         *CURRENT SURVEY CONTROL
 JV6907  ______________________________________________________________________
 JV6907* NAD 83(1991) POSITION- 39 01 14.14909(N) 076 49 39.69091(W)   ADJUSTED
 JV6907* NAD 83(1991) ELLIP HT-    20.564 (meters)        (04/03/92)   ADJUSTED
 JV6907* NAVD 88 ORTHO HEIGHT -    53.0   (meters)      174.    (feet) VERTCON3
 JV6907  ______________________________________________________________________
 JV6907  GEOID HEIGHT    -        -32.379 (meters)                     GEOID18
 JV6907  NAD 83(1991) X  -  1,130,720.162 (meters)                     COMP
 JV6907  NAD 83(1991) Y  - -4,831,352.111 (meters)                     COMP
 JV6907  NAD 83(1991) Z  -  3,994,106.723 (meters)                     COMP
 JV6907  LAPLACE CORR    -         -5.26  (seconds)                    DEFLEC18
 JV6907  HORZ ORDER      -  A
 JV6907  ELLP ORDER      -  FIRST     CLASS I
 JV6907
 JV6907.The horizontal coordinates were established by VLBI observations
 JV6907.and local terrestrial surveys and adjusted by the
 JV6907.National Geodetic Survey in April 1992.
 JV6907
 JV6907.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6907.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6907
 JV6907.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6907.GEOID18 height accuracy estimate available here.
 JV6907
 JV6907.Click photographs - Photos may exist for this station.
 JV6907
 JV6907.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6907
 JV6907.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6907
 JV6907.The ellipsoidal height was determined by GPS observations
 JV6907.and is referenced to NAD 83.
 JV6907
 JV6907. The following values were computed from the NAD 83(1991) position.
 JV6907
 JV6907;                    North         East     Units Scale Factor Converg.
 JV6907;SPC MD       -   150,306.768   414,921.391   MT  0.99995303   +0 06 29.3
 JV6907;SPC MD       -   493,131.45  1,361,287.93   sFT  0.99995303   +0 06 29.3
 JV6907;UTM  18      - 4,320,651.408   341,777.224   MT  0.99990827   -1 09 03.4
 JV6907
 JV6907!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6907!SPC MD       -   0.99999677  x   0.99995303  =   0.99994980
 JV6907!UTM  18      -   0.99999677  x   0.99990827  =   0.99990504
 JV6907
 JV6907_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4177720651(NAD 83)
 JV6907
 JV6907                          SUPERSEDED SURVEY CONTROL
 JV6907
 JV6907  NGVD 29 (04/03/92)   53.2    (m)  GEOID90  model used  GPS OBS        
 JV6907
 JV6907.Superseded values are not recommended for survey control.
 JV6907
 JV6907.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6907.See file dsdata.pdf to determine how the superseded data were derived.
 JV6907
 JV6907_MARKER: DD = SURVEY DISK
 JV6907_SETTING: 0 = UNSPECIFIED SETTING
 JV6907_MARK LOGO: NASA
 JV6907_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6907_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6907
 JV6907  HISTORY     - Date     Condition        Report By
 JV6907  HISTORY     - 1973     MONUMENTED       NASA
 JV6907
 JV6907                          STATION DESCRIPTION
 JV6907
 JV6907'DESCRIBED BY NAT AERO SPACE ADMIN 1973
 JV6907'PRIMARY SCIENTIFIC PURPOSES - MEASUREMENTS SUPPORTING THE
 JV6907'DETERMINATION OF EARTH ROTATION/POLAR MOTION INTERNAL PLATE
 JV6907'DEFORMATION, PLATE MOTION AND PLATE STABILITY AND DEVELOPMENT OF SLR
 JV6907'TECHNIQUE.
 JV6907'SITE DESCRIPTION - THE STATION IS LOCATED AT NASAS GODDARD OPTICAL
 JV6907'RESEARCH FACILITY (GORF) OUTSIDE THE WASHINGTON, DC CAPITAL BELTWAY
 JV6907'IN GREENBELT, MARYLAND.  THE GORF FACILITY IS EQUIPPED WITH TWENTY
 JV6907'OBSERVING MONUMENTS, ONE OF WHICH IS PERMANENTLY OCCUPIED BY MOBLAS-7
 JV6907'THERE ARE THREE TLRS PADS AND ONE MTLRS PAD.  THIS SITE IS THE MAJOR
 JV6907'COLLOCATION AND ENGINEERING SITE FOR CALIBRATION AND FIELD TESTING OF
 JV6907'LASER RANGING.
 JV6907'SITE TOPO MAP - LAUREL, MARYLAND, UGSS.
 JV6907'GEOLOGICAL PROVINCE - COASTAL PLAIN
 JV6907'LOCAL GEOLOGY - THICK SECION OF CRETACEOUS SANDS AND GRAVELS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8287 ***********************************************************************
 HV8287  DESIGNATION -  GREENBELT GPS E9
 HV8287  PID         -  HV8287
 HV8287  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8287  COUNTRY     -  US
 HV8287  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8287
 HV8287                         *CURRENT SURVEY CONTROL
 HV8287  ______________________________________________________________________
 HV8287* NAD 83(2011) POSITION- 38 59 55.17088(N) 076 55 12.82049(W)   ADJUSTED
 HV8287* NAD 83(2011) ELLIP HT-   -14.042 (meters)        (06/27/12)   ADJUSTED
 HV8287* NAD 83(2011) EPOCH   -  2010.00
 HV8287* NAVD 88 ORTHO HEIGHT -    18.1   (meters)       59.    (feet) VERTCON3
 HV8287  ______________________________________________________________________
 HV8287  GEOID HEIGHT    -        -32.159 (meters)                     GEOID18
 HV8287  NAD 83(2011) X  -  1,123,256.629 (meters)                     COMP
 HV8287  NAD 83(2011) Y  - -4,834,639.054 (meters)                     COMP
 HV8287  NAD 83(2011) Z  -  3,992,192.453 (meters)                     COMP
 HV8287  LAPLACE CORR    -         -4.57  (seconds)                    DEFLEC18
 HV8287
 HV8287  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8287  Standards:
 HV8287         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8287            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8287  -------------------------------------------------------------------
 HV8287  NETWORK    2.26   3.92           1.03   0.78   2.00     -0.12647601
 HV8287  -------------------------------------------------------------------
 HV8287  Click here for local accuracies and other accuracy information.
 HV8287
 HV8287.The horizontal coordinates were established by GPS observations
 HV8287.and adjusted by the National Geodetic Survey in June 2012.
 HV8287
 HV8287.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8287.been affixed to the stable North American tectonic plate. See 
 HV8287.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8287
 HV8287.The horizontal coordinates are valid at the epoch date displayed above
 HV8287.which is a decimal equivalence of Year/Month/Day.
 HV8287
 HV8287.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8287.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8287
 HV8287.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8287.GEOID18 height accuracy estimate available here.
 HV8287
 HV8287.Click photographs - Photos may exist for this station.
 HV8287
 HV8287.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8287
 HV8287.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8287
 HV8287.The ellipsoidal height was determined by GPS observations
 HV8287.and is referenced to NAD 83.
 HV8287
 HV8287. The following values were computed from the NAD 83(2011) position.
 HV8287
 HV8287;                    North         East     Units Scale Factor Converg.
 HV8287;SPC MD       -   147,860.316   406,910.168   MT  0.99995214   +0 03 00.2
 HV8287;SPC MD       -   485,105.05  1,335,004.44   sFT  0.99995214   +0 03 00.2
 HV8287;UTM  18      - 4,318,381.623   333,714.413   MT  0.99994049   -1 12 31.2
 HV8287
 HV8287!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8287!SPC MD       -   1.00000220  x   0.99995214  =   0.99995434
 HV8287!UTM  18      -   1.00000220  x   0.99994049  =   0.99994269
 HV8287
 HV8287_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3371418381(NAD 83)
 HV8287
 HV8287                          SUPERSEDED SURVEY CONTROL
 HV8287
 HV8287  NAD 83(2007)-  38 59 55.17149(N)    076 55 12.82130(W) AD(2002.00) 0
 HV8287  ELLIP H (02/10/07)  -14.029  (m)                       GP(2002.00)    
 HV8287  ELLIP H (09/18/02)  -14.030  (m)                       GP(       ) 4 2
 HV8287  ELLIP H (11/14/94)  -14.037  (m)                       GP(       ) 4 2
 HV8287  NAD 83(1991)-  38 59 55.17143(N)    076 55 12.82088(W) AD(       ) 1
 HV8287  NAD 83(1986)-  38 59 55.17018(N)    076 55 12.83162(W) AD(       ) 1
 HV8287  NGVD 29 (05/23/89)   18.3    (m)  RAPSU86  model used  GPS OBS        
 HV8287
 HV8287.Superseded values are not recommended for survey control.
 HV8287
 HV8287.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8287.See file dsdata.pdf to determine how the superseded data were derived.
 HV8287
 HV8287_MARKER: A = ALUMINUM MARKER
 HV8287_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 HV8287+WITH SETTING: INFORMATION.
 HV8287_STAMPING: GREENBELT GPS E9
 HV8287_MARK LOGO: DEWDAV
 HV8287_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8287_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8287_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8287+SATELLITE: SATELLITE OBSERVATIONS - 1988
 HV8287
 HV8287  HISTORY     - Date     Condition        Report By
 HV8287  HISTORY     - 1988     MONUMENTED       DEWDAV
 HV8287
 HV8287                          STATION DESCRIPTION
 HV8287
 HV8287'DESCRIBED BY DEWBERRY DAVIS 1988
 HV8287'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MD, NEAR THE
 HV8287'INTERSECTION OF THE B+O RAILROAD AND UNIVERSITY AVENUE.
 HV8287'TO REACH THE STATION FROM THE INTERSECTION OF U.S. ROUTE 1 AND
 HV8287'GREENBELT ROAD, GO EAST ON GREENBELT ROAD FOR 0.3 MILE TO INTERSECTION
 HV8287'WITH RHODE ISLAND AVENUE, TURN LEFT AND GO NORTH ON RHODE ISLAND
 HV8287'AVENUE FOR 0.2 MILE, PAST INTERSECTION WITH UNIVERSITY BOULEVARD, TO
 HV8287'LOCUST SPRING ROAD ON THE RIGHT, TURN RIGHT ON LOCUST SPRING AND
 HV8287'ANOTHER HARD RIGHT SO THAT YOU ARE TRAVELING SOUTH ON LOCUS SPRING
 HV8287'ROAD, GO 0.1 MILE TO CORNER WHERE LOCUST SPRING ROAD TURNS INTO
 HV8287'BRANCHVILLE ROAD, TURN LEFT ON BRANCHVILLE ROAD AND GO EAST FOR 0.25
 HV8287'MILE TO WHERE ROAD DEAD ENDS AT RAILROAD TRACKS.  THE STATION IS IN
 HV8287'THE RAILROAD RIGHT-OF-WAY BETWEEN THE WEST MOST TRACK AND A PAVED
 HV8287'ALLEY RUNNING BESIDE THE C+P TELEPHONE GARAGE.
 HV8287'THE STATION MARK IS A 2.5 INCH ALUMINUM DISK STAMPED ---GREENBELT
 HV8287'GPS-E9---, ATTATCHED TO A BERNTSEN 3-D ALUMINUM MONUMENT, FLUSH WITH
 HV8287'THE GROUND, ENCASED IN A 5 INCH ROUND ALUMINUM MONUMENT BOX.  THE MARK
 HV8287'IS 14 FEET SSW OF THE WESTERN MOST RAIL OF THE B+O TRACKS, AND 50 FEET
 HV8287'SSE OF THE SOUTH EDGE OF PAVEMENT OF BRANCHVILLE ROAD.
 HV8287'REFERENCE MARK 1 IS A PK NAIL IN A POST AT THE WESTERN EDGE OF THE
 HV8287'RAILROAD RIGHT-OF-WAY.  THE MARK IS 31.96 FEET NE OF RM 1.
 HV8287'REFERENCE MARK 2 IS A PK NAIL IN A POWER POLE WITH A LARGE METAL
 HV8287'SWITCH BOX ATTATCHED.  THE MARK IS 22.61 FEET SOUTH OF RM 2.
 HV8287'REFERENCE MARK 3 IS A SCRIBE MARK IN THE WESTERN MOST RAIL OF THE B+O
 HV8287'TRACKS.  THE MARK IS 14.06 FEET WNW OF RM 3.
 HV8287'TO REACH THE AZIMUTH MARK GO NNE ALONG WEST SIDE OF TRACKS FOR 0.5
 HV8287'MILE TO THE MARK AT THE WEST EDGE OF THE RAILROAD RIGHT-OF-WAY.  THE
 HV8287'AZIMUTH MARK IS A 3.5 INCH UNSTAMPED METRO CONTROL SURVEY DISK SET IN
 HV8287'CONCRETE, AND ENCASED IN A 6 INCH ROUND PVC MONUMENT BOX.  THE MARK IS
 HV8287'12.40 FEET WNW OF THE WESTERN MOST RAIL AND 36.61 FEET NNE OF SQUARE
 HV8287'CONCRETE POST NUMBER 000649.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7474 ***********************************************************************
 HV7474  DESIGNATION -  GREENBELT NASA TANK
 HV7474  PID         -  HV7474
 HV7474  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7474  COUNTRY     -  US
 HV7474  USGS QUAD   -  LANHAM (2016)
 HV7474
 HV7474                         *CURRENT SURVEY CONTROL
 HV7474  ______________________________________________________________________
 HV7474* NAD 83(1991) POSITION- 38 59 46.26959(N) 076 50 47.53856(W)   ADJUSTED
 HV7474  ______________________________________________________________________
 HV7474  GEOID HEIGHT    -        -32.351 (meters)                     GEOID18
 HV7474  LAPLACE CORR    -         -5.33  (seconds)                    DEFLEC18
 HV7474  HORZ ORDER      -  THIRD
 HV7474
 HV7474.The horizontal coordinates were established by classical geodetic methods
 HV7474.and adjusted by the National Geodetic Survey in January 1992.
 HV7474
 HV7474.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7474.GEOID18 height accuracy estimate available here.
 HV7474
 HV7474.Click photographs - Photos may exist for this station.
 HV7474
 HV7474.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7474
 HV7474. The following values were computed from the NAD 83(1991) position.
 HV7474
 HV7474;                    North         East     Units Scale Factor Converg.
 HV7474;SPC MD       -   147,593.989   413,293.889   MT  0.99995205   +0 05 46.7
 HV7474;SPC MD       -   484,231.28  1,355,948.37   sFT  0.99995205   +0 05 46.7
 HV7474;UTM  18      - 4,317,975.148   340,090.587   MT  0.99991487   -1 09 44.0
 HV7474
 HV7474_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4009017975(NAD 83)
 HV7474
 HV7474                          SUPERSEDED SURVEY CONTROL
 HV7474
 HV7474  NAD 83(1986)-  38 59 46.26806(N)    076 50 47.54973(W) AD(       ) 3
 HV7474  NAD 27      -  38 59 45.87094(N)    076 50 48.65023(W) AD(       ) 3
 HV7474
 HV7474.Superseded values are not recommended for survey control.
 HV7474
 HV7474.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7474.See file dsdata.pdf to determine how the superseded data were derived.
 HV7474
 HV7474_MARKER: 53 = ELEVATED TANK
 HV7474
 HV7474  HISTORY     - Date     Condition        Report By
 HV7474  HISTORY     - 1957     FIRST OBSERVED   CGS
 HV7474  HISTORY     - 1962     GOOD             CGS
 HV7474  HISTORY     - 1970     GOOD             NGS
 HV7474
 HV7474                          STATION DESCRIPTION
 HV7474
 HV7474'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HV7474'THE STATION IS THE TOP AND CENTER OF THE NATIONAL AERONAUTICS
 HV7474'AND SPACE ADMINISTRATION WATER TANK OF THE U.S. AGRICULTURE
 HV7474'DEPARTMENT, BELTSVILLE, MARYLAND.  LOCATED ABOUT 6.0 MILES SOUTH
 HV7474'OF LAUREL, MARYLAND AND 4.0 MILES WEST OF BOWIE, MARYLAND AND
 HV7474'ABOUT 0.7 MILE NORTHERLY OF THE MAIN GATE OF THE NASA.
 HV7474'
 HV7474'TO REACH THE STATION FROM THE JUNCTIONS OF STATE HIGHWAYS 197
 HV7474'AND 564 AT THE NORTH END OF THE RAILROAD BRIDGE IN BOWIE,
 HV7474'MARYLAND.  GO WESTERLY ON STATE HIGHWAY 564 FOR 1.65 MILES TO A
 HV7474'SIDE ROAD RIGHT SPRINGFIELD ROAD.  TURN RIGHT AND GO NORTHERLY
 HV7474'ON THE SPRINGFIELD ROAD FOR 0.95 MILE TO A SIDE ROAD LEFT.
 HV7474'CONTINUE NORTHERLY, STRAIGHT AHEAD, ON A BLACKTOP ROAD FOR 0.7 MILE
 HV7474'TO A Y-FORK INTERSECTION.  TAKE THE LEFT FORK AND GO WESTERLY
 HV7474'ON A BLACKTOP ROAD FOR 1.75 MILES TO A CROSSROADS.  TURN
 HV7474'LEFT AND GO SOUTHERLY ON A BLACKTOP ROAD FOR 1.8 MILES TO THE
 HV7474'NASA MAIN GATE.  PASS THROUGH THE GATE AND GO NORTHERLY
 HV7474'FOR 0.6 MILE TO A SIDE ROAD LEFT.  TURN LEFT AND GO WEST FOR 0.3
 HV7474'MILE TO THE WATER TANK.
 HV7474'
 HV7474'THE STATION IS A 8-STEEL LEGGED STRUCTURE WITH AN ELLIPSOIDAL
 HV7474'TOP AND BOTTOM TANK MOUNTED AT THEIR APEX, AT THE TOP OF THE TANK
 HV7474'IS A STEEL FRAME STRUCTURE ACROSS THE TOP AND CENTER OF THE
 HV7474'ROOF WITH TWO SMALL RED FLASHING LIGHT NEAR THE CENTER.  THE
 HV7474'LIGHTS ARE NOT CENTERED.  THE STRUCTURE IS GREY WITH AN OVERALL
 HV7474'HEIGHT OF APPROXIMATELY 70.0 FEET.
 HV7474
 HV7474                          STATION RECOVERY (1970)
 HV7474
 HV7474'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7474'THE STATION IS THE CENTER OF THE TOP OF THE GREENBELT NATIONAL
 HV7474'AERONAUTIC AND SPACE ADMINISTRATION TANK LOCATED 1/4 MILE SOUTH
 HV7474'OF THE NATIONAL AERONAUTIC AND SPACE ADMINISTRATION RESEARCH
 HV7474'CENTER ON SOIL CONSERVATION ROAD ON THE GROUNDS OF THE NATIONAL
 HV7474'AGRICULTURAL RESEARCH CENTER ABOUT 2 MILES EAST OF GREENBELT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5924 ***********************************************************************
 JV5924  DESIGNATION -  GREENBELT WSSD
 JV5924  PID         -  JV5924
 JV5924  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5924  COUNTRY     -  US
 JV5924  USGS QUAD   -  BELTSVILLE (2016)
 JV5924
 JV5924                         *CURRENT SURVEY CONTROL
 JV5924  ______________________________________________________________________
 JV5924* NAD 83(1991) POSITION- 39 00 39.22940(N) 076 53 03.96956(W)   ADJUSTED
 JV5924  ______________________________________________________________________
 JV5924  GEOID HEIGHT    -        -32.236 (meters)                     GEOID18
 JV5924  LAPLACE CORR    -         -4.94  (seconds)                    DEFLEC18
 JV5924  HORZ ORDER      -  THIRD
 JV5924
 JV5924.The horizontal coordinates were established by classical geodetic methods
 JV5924.and adjusted by the National Geodetic Survey in January 1992.
 JV5924
 JV5924.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5924.GEOID18 height accuracy estimate available here.
 JV5924
 JV5924.Click photographs - Photos may exist for this station.
 JV5924
 JV5924.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5924
 JV5924. The following values were computed from the NAD 83(1991) position.
 JV5924
 JV5924;                    North         East     Units Scale Factor Converg.
 JV5924;SPC MD       -   149,222.229   410,008.882   MT  0.99995262   +0 04 21.1
 JV5924;SPC MD       -   489,573.26  1,345,170.81   sFT  0.99995262   +0 04 21.1
 JV5924;UTM  18      - 4,319,675.106   336,842.243   MT  0.99992780   -1 11 11.2
 JV5924
 JV5924_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3684219675(NAD 83)
 JV5924
 JV5924                          SUPERSEDED SURVEY CONTROL
 JV5924
 JV5924  NAD 83(1986)-  39 00 39.22784(N)    076 53 03.98138(W) AD(       ) 3
 JV5924  NAD 27      -  39 00 38.83277(N)    076 53 05.07796(W) AD(       ) 3
 JV5924
 JV5924.Superseded values are not recommended for survey control.
 JV5924
 JV5924.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5924.See file dsdata.pdf to determine how the superseded data were derived.
 JV5924
 JV5924_MARKER: 53 = ELEVATED TANK
 JV5924
 JV5924  HISTORY     - Date     Condition        Report By
 JV5924  HISTORY     - 1939     FIRST OBSERVED   WSSC
 JV5924  HISTORY     - 1957     GOOD             CGS
 JV5924  HISTORY     - 1970     GOOD             NGS
 JV5924  HISTORY     - 1983     GOOD             USPSQD
 JV5924
 JV5924                          STATION DESCRIPTION
 JV5924
 JV5924'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5924'STATION IS LOCATED ON A HIGH WOODED HILL ABOUT 0.4 MILE NORTH OF
 JV5924'GREENBELT LAKE.  STATION IS OF STEEL CONSTRUCTION AND PAINTED
 JV5924'SILVER.  THE POINT INTERSECTED WAS THE CENTER OF TOP OF TANK.
 JV5924
 JV5924                          STATION RECOVERY (1970)
 JV5924
 JV5924'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5924'THE STATION WAS RECOVERED AS DESCRIBED IN 1957 BY J.C. ELLERBE.  IT
 JV5924'IS 0.05 MILE WEST OF THE INTERSECTION OF RIDGE ROAD AND LASTNER
 JV5924'LANE, AND IS ABOUT 80 FEET HIGH.  IT IS 2-1/2 MILES E OF JUNCTION
 JV5924'OF INTERSTATE HWY 495 AND U.S. HWY 1 AND 3/4 MILE NE OF THE
 JV5924'JUNCTION OF INTERSTATE HWY 495 AND ST HWY 201.
 JV5924'
 JV5924'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION BOXWOOD,
 JV5924'THE DISTANCE BEING 51.76 FEET, 15.776 METERS SOUTH OF STATION.
 JV5924
 JV5924                          STATION RECOVERY (1983)
 JV5924
 JV5924'RECOVERY NOTE BY US POWER SQUADRON 1983 (RKM)
 JV5924'STEEL CYLINDER ON GROUND, PAINTED LIGHT BLUE, ABOUT 50 FEET IN
 JV5924'DIAMETER AND ABOUT 80 FEET HIGH, SURROUNDED BY CHAIN LINK FENCE.
 JV5924'TRIANGULATION STATION BOXWOOD AND ITS REFERENCE MARKS ARE WITHIN
 JV5924'THE FENCE.  THE GATE IS CHAINED AND PADLOCKED.  RECOVERED AS
 JV5924'DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6350 ***********************************************************************
 HV6350  DESIGNATION -  GREENBURY PT
 HV6350  PID         -  HV6350
 HV6350  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6350  COUNTRY     -  US
 HV6350  USGS QUAD   -  ANNAPOLIS (2016)
 HV6350
 HV6350                         *CURRENT SURVEY CONTROL
 HV6350  ______________________________________________________________________
 HV6350* NAD 83(1991) POSITION- 38 58 29.78929(N) 076 27 17.86621(W)   ADJUSTED
 HV6350* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6350  ______________________________________________________________________
 HV6350  GEOID HEIGHT    -        -33.411 (meters)                     GEOID18
 HV6350  LAPLACE CORR    -         -3.00  (seconds)                    DEFLEC18
 HV6350  HORZ ORDER      -  THIRD
 HV6350
 HV6350.The horizontal coordinates were established by classical geodetic methods
 HV6350.and adjusted by the National Geodetic Survey in January 1992.
 HV6350
 HV6350.The orthometric height was scaled from a topographic map.
 HV6350
 HV6350.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6350.GEOID18 height accuracy estimate available here.
 HV6350
 HV6350.Click photographs - Photos may exist for this station.
 HV6350
 HV6350.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6350
 HV6350. The following values were computed from the NAD 83(1991) position.
 HV6350
 HV6350;                    North         East     Units Scale Factor Converg.
 HV6350;SPC MD       -   145,365.453   447,228.680   MT  0.99995134   +0 20 31.5
 HV6350;SPC MD       -   476,919.82  1,467,282.76   sFT  0.99995134   +0 20 31.5
 HV6350;UTM  18      - 4,315,002.470   373,964.930   MT  0.99979560   -0 54 54.9
 HV6350
 HV6350!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6350!SPC MD       -   1.00000512  x   0.99995134  =   0.99995646
 HV6350!UTM  18      -   1.00000512  x   0.99979560  =   0.99980072
 HV6350
 HV6350:                Primary Azimuth Mark                     Grid Az
 HV6350:SPC MD       -  GREENBURY POINT SHOAL LH                 174 52 40.9
 HV6350:UTM  18      -  GREENBURY POINT SHOAL LH                 176 08 07.3
 HV6350
 HV6350_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7396415002(NAD 83)
 HV6350
 HV6350|---------------------------------------------------------------------|
 HV6350| PID    Reference Object                     Distance      Geod. Az  |
 HV6350|                                                           dddmmss.s |
 HV6350| CX2824 GREENBURY PT RM                      72.532 METERS 02235     |
 HV6350| HV6365 GREENBURY POINT SHOAL LH            APPROX. 0.8 KM 1751312.4 |
 HV6350| HV6394 ANNAPOLIS ST MARYS RC CH SPIRE      APPROX. 2.8 KM 2702317.7 |
 HV6350| HV6392 ANNAPOLIS ST ANNS EPIS SPIRE        APPROX. 3.3 KM 2764443.5 |
 HV6350| HV6393 ANNAPOLIS ST CAPITOL BLDG DOME      APPROX. 3.1 KM 2774604.8 |
 HV6350| HV6395 ANNAPOLIS NAVAL ACAD CHAPEL         APPROX. 2.8 KM 2850650.0 |
 HV6350|---------------------------------------------------------------------|
 HV6350
 HV6350                          SUPERSEDED SURVEY CONTROL
 HV6350
 HV6350  NAD 83(1986)-  38 58 29.78539(N)    076 27 17.87770(W) AD(       ) 3
 HV6350  NAD 27      -  38 58 29.37900(N)    076 27 19.02100(W) AD(       ) 3
 HV6350  USSD        -  38 58 29.74300(N)    076 27 18.85200(W) AD(       ) 3
 HV6350
 HV6350.Superseded values are not recommended for survey control.
 HV6350
 HV6350.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6350.See file dsdata.pdf to determine how the superseded data were derived.
 HV6350
 HV6350_MARKER: Z = SEE DESCRIPTION
 HV6350_SETTING: 0 = UNSPECIFIED SETTING
 HV6350_MARK LOGO: MDSFC
 HV6350
 HV6350  HISTORY     - Date     Condition        Report By
 HV6350  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6350  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6350
 HV6350                          STATION DESCRIPTION
 HV6350
 HV6350'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (OWF)
 HV6350'ON NAVAL RESERVATION ON HIGH LEVEL GROUND, 148 FEET BACK FROM THE
 HV6350'TOP OF BANK TO WESTWARD AND 2,416 FEET FROM THE TOP OF BANK TO
 HV6350'EASTWARD.  MARKED BY A 4-INCH TILE SET IN CEMENT WITH LARGE END
 HV6350'DOWN AND TOP 2 INCHES ABOVE GROUND, CENTERED BY A 2-INCH IRON PIPE
 HV6350'20 INCHES LONG WITH AN INVERTED SPIKE IN TOP.  REFERENCE MARK IS
 HV6350'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 HV6350'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2
 HV6350'FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6350'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  THE MARK
 HV6350'IS SET IN CLAY, DISTANT 72.582 METERS (238.13 FEET) N 22 DEG 35 MIN E.
 HV6350
 HV6350                          STATION RECOVERY (1932)
 HV6350
 HV6350'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6350'ABOUT 4 HOURS WERE SPENT BY A PARTY OF 4 MEN IN DIGGING FOR THE
 HV6350'STATION BUT NEITHER STATION MARK NOR REFERENCE MARK COULD BE
 HV6350'FOUND.  THE STATION IS BELIEVED TO BE LOST.  THE AREA IN WHICH THE
 HV6350'STATION WAS LOCATED HAS BEEN UNDER CULTIVATION AND THE MARKS HAVE
 HV6350'PROBABLY BEEN PLOUGHED OUT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6228 ***********************************************************************
 DN6228  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6228  DESIGNATION -  GREENFIELD
 DN6228  PID         -  DN6228
 DN6228  STATE/COUNTY-  MD/CECIL
 DN6228  COUNTRY     -  US
 DN6228  USGS QUAD   -  RISING SUN (2016)
 DN6228
 DN6228                         *CURRENT SURVEY CONTROL
 DN6228  ______________________________________________________________________
 DN6228* NAD 83(2011) POSITION- 39 39 51.11003(N) 076 03 49.38017(W)   ADJUSTED
 DN6228* NAD 83(2011) ELLIP HT-    72.254 (meters)        (06/27/12)   ADJUSTED
 DN6228* NAD 83(2011) EPOCH   -  2010.00
 DN6228* NAVD 88 ORTHO HEIGHT -   105.24  (meters)      345.3   (feet) GPS OBS
 DN6228  ______________________________________________________________________
 DN6228  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6228  GEOID HEIGHT    -        -32.964 (meters)                     GEOID03
 DN6228  GEOID HEIGHT    -        -32.988 (meters)                     GEOID18
 DN6228  NAD 83(2011) X  -  1,184,138.241 (meters)                     COMP
 DN6228  NAD 83(2011) Y  - -4,771,919.908 (meters)                     COMP
 DN6228  NAD 83(2011) Z  -  4,049,399.922 (meters)                     COMP
 DN6228  LAPLACE CORR    -         -1.20  (seconds)                    DEFLEC18
 DN6228
 DN6228  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6228  Standards:
 DN6228         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6228            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6228  -------------------------------------------------------------------
 DN6228  NETWORK    0.52   1.08           0.24   0.18   0.55     -0.00324905
 DN6228  -------------------------------------------------------------------
 DN6228  Click here for local accuracies and other accuracy information.
 DN6228
 DN6228.The horizontal coordinates were established by GPS observations
 DN6228.and adjusted by the National Geodetic Survey in June 2012.
 DN6228
 DN6228.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6228.been affixed to the stable North American tectonic plate. See 
 DN6228.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6228
 DN6228.The horizontal coordinates are valid at the epoch date displayed above
 DN6228.which is a decimal equivalence of Year/Month/Day.
 DN6228
 DN6228.The orthometric height was determined by GPS observations and a
 DN6228.high-resolution geoid model using precise GPS observation and
 DN6228.processing techniques.
 DN6228
 DN6228.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6228.GEOID18 height accuracy estimate available here.
 DN6228
 DN6228.Click photographs - Photos may exist for this station.
 DN6228
 DN6228.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6228
 DN6228.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6228
 DN6228.The ellipsoidal height was determined by GPS observations
 DN6228.and is referenced to NAD 83.
 DN6228
 DN6228. The following values were computed from the NAD 83(2011) position.
 DN6228
 DN6228;                    North         East     Units Scale Factor Converg.
 DN6228;SPC MD       -   222,157.676   480,345.273   MT  1.00004450   +0 35 15.5
 DN6228;SPC MD       -   728,862.31  1,575,932.78   sFT  1.00004450   +0 35 15.5
 DN6228;UTM  18      - 4,391,028.127   408,757.273   MT  0.99970250   -0 40 44.4
 DN6228
 DN6228!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6228!SPC MD       -   0.99998866  x   1.00004450  =   1.00003316
 DN6228!UTM  18      -   0.99998866  x   0.99970250  =   0.99969117
 DN6228
 DN6228_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0875791028(NAD 83)
 DN6228
 DN6228                          SUPERSEDED SURVEY CONTROL
 DN6228
 DN6228  NAD 83(2007)-  39 39 51.11010(N)    076 03 49.38101(W) AD(2002.00) 1
 DN6228  ELLIP H (02/23/12)   72.279  (m)                       GP(2002.00) 4 1
 DN6228
 DN6228.Superseded values are not recommended for survey control.
 DN6228
 DN6228.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6228.See file dsdata.pdf to determine how the superseded data were derived.
 DN6228
 DN6228_MARKER: DD = SURVEY DISK
 DN6228_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6228_STAMPING: GREENFIELD 2008
 DN6228_MARK LOGO: MD-015
 DN6228_PROJECTION: FLUSH
 DN6228_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6228_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6228+STABILITY: SURFACE MOTION
 DN6228_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6228+SATELLITE: SATELLITE OBSERVATIONS - October 08, 2025
 DN6228
 DN6228  HISTORY     - Date     Condition        Report By
 DN6228  HISTORY     - 20081204 MONUMENTED       GWS
 DN6228  HISTORY     - 20140406 GOOD             GPSSS
 DN6228  HISTORY     - 20251008 GOOD             PROFLN
 DN6228
 DN6228                          STATION DESCRIPTION
 DN6228
 DN6228'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6228'THE STATION IS LOCATED ABOUT 5.6 MI (9.0 KM) WEST-NORTHWEST OF BAY
 DN6228'VIEW, 4.9 MI (7.9 KM) NORTHEAST OF PORT DEPOSIT AND 2.3 MI (3.7 KM)
 DN6228'SOUTH OF RISING SUN.
 DN6228'
 DN6228'TO REACH FROM THE JUNCTION OF MD 222 AND MD 276 IN PORT DEPOSIT, GO
 DN6228'EAST-NORTHEAST ON MD 276 FOR 5.50 MI (8.8 KM) TO AN INTERSECTION.
 DN6228'TURN RIGHT AND GO EAST ON COWAN ROAD FOR 0.21 MI (0.3 KM) TO A SIDE
 DN6228'ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTH ON WEST PEPPERMINT DR FOR
 DN6228'0.51 MI (0.8 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTH
 DN6228'ON CHADS WAY FOR 0.17 MI (0.3 KM) TO THE STATION ON THE LEFT.
 DN6228'
 DN6228'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6228'CONCRETE MONUMENT AT 68 CHADS WAY, 39 FT (11.9 M) SOUTH OF A WELL ON
 DN6228'68 CHADS WAY, 43 FT (13.1 M) NORTHEAST OF THE WEST EDGE OF THE
 DN6228'DRIVEWAY TO 71 CHADS WAY AND 64 FT (19.5 M) NORTHWEST OF THE MAILBOX
 DN6228'TO 79 CHADS WAY.
 DN6228
 DN6228                          STATION RECOVERY (2014)
 DN6228
 DN6228'RECOVERY NOTE BY GPS SALES AND SERVICES 2014 (FP)
 DN6228'RECOVERED BY FARON PYLES, PLS OF NORTHERN BAY LAND PLANNING,
 DN6228'ENGINEERING AND SURVEYING CORP.
 DN6228
 DN6228                          STATION RECOVERY (2025)
 DN6228
 DN6228'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6228'THE MARK IS 30.5 FT (9.3 M) EAST-SOUTHEAST OF THE WESTERLY LINE
 DN6228'EXTENDED OF THE GARAGE FOR HOUSE 68 - TWO STORY GREY VINY SIDING - 6
 DN6228'FT (1.8 M) EAST-SOUTHEAST OF THE WESTERLY LINE EXTENDED OF THE SECOND
 DN6228'STORY OF THE HOUSE - ALSO OF THE EDGE OF THE PORCH.  4 FT (1.2 M)
 DN6228'NORTH TOWARD THE HOUSE RADIAL TO THE CURVE FROM THE NORTH EDGE OF
 DN6228'PAVING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3735 ***********************************************************************
 JV3735  DESIGNATION -  GREENLAWN
 JV3735  PID         -  JV3735
 JV3735  STATE/COUNTY-  MD/WASHINGTON
 JV3735  COUNTRY     -  US
 JV3735  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3735
 JV3735                         *CURRENT SURVEY CONTROL
 JV3735  ______________________________________________________________________
 JV3735* NAD 83(1991) POSITION- 39 35 30.29962(N) 077 48 43.66255(W)   ADJUSTED
 JV3735* NAVD 88 ORTHO HEIGHT -   139.673 (meters)      458.24  (feet) ADJUSTED
 JV3735  ______________________________________________________________________
 JV3735  GEOID HEIGHT    -        -34.230 (meters)                     GEOID18
 JV3735  LAPLACE CORR    -          2.68  (seconds)                    DEFLEC18
 JV3735  DYNAMIC HEIGHT  -        139.591 (meters)      457.97  (feet) COMP
 JV3735  MODELED GRAVITY -    980,034.7   (mgal)                       NAVD 88
 JV3735
 JV3735  HORZ ORDER      -  THIRD
 JV3735  VERT ORDER      -  SECOND    CLASS 0
 JV3735
 JV3735.The horizontal coordinates were established by classical geodetic methods
 JV3735.and adjusted by the National Geodetic Survey in January 1992.
 JV3735
 JV3735.The orthometric height was determined by differential leveling and
 JV3735.adjusted by the NATIONAL GEODETIC SURVEY
 JV3735.in June 1991.
 JV3735
 JV3735.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3735.GEOID18 height accuracy estimate available here.
 JV3735
 JV3735.Click photographs - Photos may exist for this station.
 JV3735
 JV3735.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3735
 JV3735.The dynamic height is computed by dividing the NAVD 88
 JV3735.geopotential number by the normal gravity value computed on the
 JV3735.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3735.degrees latitude (g = 980.6199 gals.).
 JV3735
 JV3735.The modeled gravity was interpolated from observed gravity values.
 JV3735
 JV3735. The following values were computed from the NAD 83(1991) position.
 JV3735
 JV3735;                    North         East     Units Scale Factor Converg.
 JV3735;SPC MD       -   214,012.031   330,236.959   MT  1.00002787   -0 30 35.0
 JV3735;SPC MD       -   702,137.81  1,083,452.42   sFT  1.00002787   -0 30 35.0
 JV3735;SPC WV N     -   122,564.811   744,971.441   MT  0.99994092   +1 04 35.3
 JV3735;SPC WV N     -   402,114.72  2,444,127.14   sFT  0.99994092   +1 04 35.3
 JV3735;UTM  18      - 4,386,225.523   258,515.772   MT  1.00031802   -1 47 35.1
 JV3735
 JV3735!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3735!SPC MD       -   0.99998346  x   1.00002787  =   1.00001133
 JV3735!SPC WV N     -   0.99998346  x   0.99994092  =   0.99992438
 JV3735!UTM  18      -   0.99998346  x   1.00031802  =   1.00030147
 JV3735
 JV3735:                Primary Azimuth Mark                     Grid Az
 JV3735:SPC MD       -  ONEGO                                    241 45 01.6
 JV3735:SPC WV N     -  ONEGO                                    240 09 51.3
 JV3735:UTM  18      -  ONEGO                                    243 02 01.7
 JV3735
 JV3735_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5851586225(NAD 83)
 JV3735
 JV3735|---------------------------------------------------------------------|
 JV3735| PID    Reference Object                     Distance      Geod. Az  |
 JV3735|                                                           dddmmss.s |
 JV3735| JV3734 GREENLAWN RM 1                        9.794 METERS 02144     |
 JV3735| JV4020 GREENLAWN 2 RESET                    41.715 METERS 11618     |
 JV3735| JV3736 GREENLAWN RM 2                        9.674 METERS 19202     |
 JV3735| JV3349 ONEGO                               APPROX. 1.3 KM 2411426.6 |
 JV3735|---------------------------------------------------------------------|
 JV3735
 JV3735                          SUPERSEDED SURVEY CONTROL
 JV3735
 JV3735  NAD 83(1986)-  39 35 30.29953(N)    077 48 43.67064(W) AD(       ) 3
 JV3735  NAD 27      -  39 35 29.94740(N)    077 48 44.69130(W) AD(       ) 3
 JV3735  NGVD 29 (11/26/84)  139.880  (m)          458.92   (f) ADJUSTED    2 0
 JV3735
 JV3735.Superseded values are not recommended for survey control.
 JV3735
 JV3735.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3735.See file dsdata.pdf to determine how the superseded data were derived.
 JV3735
 JV3735_MARKER: DS = TRIANGULATION STATION DISK
 JV3735_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3735_STAMPING: GREENLAWN 1957
 JV3735_MARK LOGO: CGS
 JV3735_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3735+STABILITY: SURFACE MOTION
 JV3735
 JV3735  HISTORY     - Date     Condition        Report By
 JV3735  HISTORY     - 1957     MONUMENTED       CGS
 JV3735  HISTORY     - 1966     SEE DESCRIPTION  CGS
 JV3735  HISTORY     - 20201104 MARK NOT FOUND   NAGEL
 JV3735
 JV3735                          STATION DESCRIPTION
 JV3735
 JV3735'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV3735'STATION IS LOCATED ABOUT 3/4 OF A MILE SOUTHEAST OF WILLIAMSPORT
 JV3735'ALONG THE EAST EDGE OF THE GREENLAWN CEMETERY.  STATION IS 91
 JV3735'FEET EAST OF THE APPROXIMATE CENTER OF DRIVEWAY.  THE MARK IS
 JV3735'FLUSH WITH THE GROUND AND THE DISK IS STAMPED GREENLAWN 1957.
 JV3735'
 JV3735'REFERENCE MARK NO. 1 IS 92 FEET EAST OF THE APPROXIMATE CENTER OF
 JV3735'DRIVEWAY.  THE MARK IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED
 JV3735'GREENLAWN NO 1 1957.
 JV3735'
 JV3735'REFERENCE MARK NO. 2 IS 92 FEET EAST OF THE APPROXIMATE CENTER OF
 JV3735'DRIVEWAY.  THE MARK IS FLUSH WITH THE GROUND AND THE DISK IS
 JV3735'STAMPED GREENLAWN NO 2 1957.
 JV3735'
 JV3735'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 11 AND STATE
 JV3735'HIGHWAYS 63 AND 68 IN THE NORTHEAST EDGE OF WILLIAMSPORT, GO
 JV3735'SOUTH ON STATE HIGHWAYS 63 AND 68 FOR 0.4 MILE TO THE JUNCTION
 JV3735'OF TWO HIGHWAYS AT FORKS.  KEEP LEFT FORK ON STATE HIGHWAY 68 FOR
 JV3735'0.45 MILE TO THE EASTERNMOST DRIVEWAY TO CEMETERY.  TURN RIGHT
 JV3735'ON DRIVEWAY AND GO 0.05 MILE TO STATION ON THE LEFT AS
 JV3735'DESCRIBED.
 JV3735'
 JV3735'STATION RONEY MAY BE USED AS AZIMUTH MARK.
 JV3735'
 JV3735'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV3735
 JV3735                          STATION RECOVERY (1966)
 JV3735
 JV3735'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (JCB)
 JV3735'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND TO
 JV3735'BE IN GOOD CONDITION.  THE PROPERTY OWNERS REQUESTED THAT THE
 JV3735'MARKS BE MOVED AS THE AREA IS TO BE GRADED FOR CEMETERY
 JV3735'EXPANSION.  A NEW STATION AND TWO NEW REFERENCE MARKS WERE
 JV3735'ESTABLISHED AND THE ORIGINAL STATION SURFACE MARK AND THE
 JV3735'TWO REFERENCE MARKS WERE THEN DESTROYED.  A DIFFERENCE WAS
 JV3735'FOUND IN THE ANGLE BETWEEN THE REFERENCE MARKS AND A DIFFERENCE
 JV3735'WAS FOUND IN THE DISTANCE TO THE REFERENCE MARKS.  A RECHECK
 JV3735'WAS MADE AT THIS TIME.  TREES HAVE GROWN UP SO THAT STATION
 JV3735'RONEY 1957 IS NO LONGER VISIBLE FROM THE GROUND AT STATION.
 JV3735'
 JV3735'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV3735'3/4 MILE SOUTHEAST OF WILLIAMSPORT.
 JV3735
 JV3735                          STATION RECOVERY (2020)
 JV3735
 JV3735'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2020 (RN)
 JV3735'STATION NOT RECOVERED.  STATION LIES AMONG MORE RECENT GRAVES AND IS
 JV3735'LIKELY DESTROYED.  1966 RECOVERY NOTE STATES THAT THE ORIGINAL STATION
 JV3735'AND TWO REFERENCE MARKS WERE DESTROYED AND NEW STATION AND REFERENCE
 JV3735'MARKS WERE RESET (GREENLAWN 2).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4020 ***********************************************************************
 JV4020  DESIGNATION -  GREENLAWN 2 RESET
 JV4020  PID         -  JV4020
 JV4020  STATE/COUNTY-  MD/WASHINGTON
 JV4020  COUNTRY     -  US
 JV4020  USGS QUAD   -  WILLIAMSPORT (2017)
 JV4020
 JV4020                         *CURRENT SURVEY CONTROL
 JV4020  ______________________________________________________________________
 JV4020* NAD 83(1991) POSITION- 39 35 29.70019(N) 077 48 42.09536(W)   NO CHECK
 JV4020* NAVD 88 ORTHO HEIGHT -   141.98  (+/-2cm)      465.8   (feet) VERTCON3
 JV4020  ______________________________________________________________________
 JV4020  GEOID HEIGHT    -        -34.229 (meters)                     GEOID18
 JV4020  LAPLACE CORR    -          2.70  (seconds)                    DEFLEC18
 JV4020  HORZ ORDER      -  THIRD
 JV4020  VERT ORDER      -  THIRD (See Below)
 JV4020
 JV4020.The horizontal coordinates were established by classical geodetic methods
 JV4020.and adjusted by the National Geodetic Survey in January 1992.
 JV4020
 JV4020.No horizontal observational check was made to the station.
 JV4020
 JV4020.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4020.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4020
 JV4020.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4020.GEOID18 height accuracy estimate available here.
 JV4020
 JV4020.The vertical order pertains to the NGVD 29 superseded value.
 JV4020
 JV4020.Click photographs - Photos may exist for this station.
 JV4020
 JV4020.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4020
 JV4020. The following values were computed from the NAD 83(1991) position.
 JV4020
 JV4020;                    North         East     Units Scale Factor Converg.
 JV4020;SPC MD       -   213,993.212   330,274.190   MT  1.00002784   -0 30 34.0
 JV4020;SPC MD       -   702,076.06  1,083,574.57   sFT  1.00002784   -0 30 34.0
 JV4020;SPC WV N     -   122,547.031   745,009.174   MT  0.99994092   +1 04 36.3
 JV4020;SPC WV N     -   402,056.38  2,444,250.93   sFT  0.99994092   +1 04 36.3
 JV4020;UTM  18      - 4,386,205.869   258,552.582   MT  1.00031780   -1 47 34.0
 JV4020
 JV4020!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4020!SPC MD       -   0.99998310  x   1.00002784  =   1.00001094
 JV4020!SPC WV N     -   0.99998310  x   0.99994092  =   0.99992402
 JV4020!UTM  18      -   0.99998310  x   1.00031780  =   1.00030089
 JV4020
 JV4020:                Primary Azimuth Mark                     Grid Az
 JV4020:SPC MD       -  RONEY                                    025 35 03.3
 JV4020:SPC WV N     -  RONEY                                    023 59 53.0
 JV4020:UTM  18      -  RONEY                                    026 52 03.3
 JV4020
 JV4020_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5855286205(NAD 83)
 JV4020
 JV4020|---------------------------------------------------------------------|
 JV4020| PID    Reference Object                     Distance      Geod. Az  |
 JV4020|                                                           dddmmss.s |
 JV4020| JV4732 RONEY                               APPROX. 0.7 KM 0250429.3 |
 JV4020| JV3346 GREENLAWN 2 RM 3                      9.772 METERS 03331     |
 JV4020| JV3613 GREENLAWN 2 RM 4                      9.505 METERS 21926     |
 JV4020| JV3735 GREENLAWN                            41.715 METERS 29618     |
 JV4020|---------------------------------------------------------------------|
 JV4020
 JV4020                          SUPERSEDED SURVEY CONTROL
 JV4020
 JV4020  NAD 83(1986)-  39 35 29.70012(N)    077 48 42.10349(W) AD(       ) 3
 JV4020  NAD 27      -  39 35 29.34800(N)    077 48 43.12420(W) AD(       ) 3
 JV4020  NGVD 29 (??/??/??)  142.18   (m)          466.5    (f) RESET       3  
 JV4020  NGVD 29             142.18   (m)          466.5    (f) LEVELING    3  
 JV4020  NGVD 29             142.16   (m)          466.4    (f) LEVELING    3  
 JV4020
 JV4020.Superseded values are not recommended for survey control.
 JV4020
 JV4020.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4020.See file dsdata.pdf to determine how the superseded data were derived.
 JV4020
 JV4020_MARKER: DS = TRIANGULATION STATION DISK
 JV4020_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4020_STAMPING: GREENLAWN 2 1966 BM RESET
 JV4020_MARK LOGO: CGS
 JV4020_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4020+STABILITY: SURFACE MOTION
 JV4020_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4020+SATELLITE: SATELLITE OBSERVATIONS - March 24, 2007
 JV4020
 JV4020  HISTORY     - Date     Condition        Report By
 JV4020  HISTORY     - 1966     MONUMENTED       CGS
 JV4020  HISTORY     - 1966     GOOD             CGS
 JV4020  HISTORY     - 1981     GOOD             NGS
 JV4020  HISTORY     - 19910717 GOOD             USPSQD
 JV4020  HISTORY     - 20070324 GOOD             GEOCAC
 JV4020
 JV4020                          STATION DESCRIPTION
 JV4020
 JV4020'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (JCB)
 JV4020'STATION IS LOCATED ABOUT 3/4 MILE SOUTHEAST OF WILLIAMSPORT ALONG
 JV4020'THE WEST RIGHT OF WAY OF INTERSTATE HIGHWAY 81 AND JUST EAST OF
 JV4020'THE GREENLAWN CEMETERY.  STATION IS 85 PACES SOUTH OF
 JV4020'E. SUNSET AVENUE EXTENDED, 230 FEET EAST OF THE CENTERLINE OF
 JV4020'CEMETERY DRIVEWAY AND 1.0 FOOT NORTH OF STEEL WITNESS POST.  THE
 JV4020'MARK IS A STANDARD DISK SET FLUSH IN A CONCRETE MONUMENT ABOUT
 JV4020'10 INCHES IN DIAMETER, FLUSH WITH THE GROUND, AND THE DISK IS
 JV4020'STAMPED GREENLAWN 2 1966 BM RESET.
 JV4020'
 JV4020'TO REACH STATION FROM THE INTERSECTION OF U.S. HIGHWAY 11 AND
 JV4020'S. ARTIZAN STREET IN THE NORTHEAST EDGE OF WILLIAMSPORT, GO
 JV4020'SOUTH ON S. ARTIZAN STREET FOR 0.4 MILE TO CROSS STREET.  TURN
 JV4020'LEFT AND GO EAST ON E. SUNSET AVENUE FOR 0.5 MILE TO END OF
 JV4020'STREET AND STATION ON THE RIGHT AS DESCRIBED.
 JV4020'
 JV4020'REFERENCE MARK NO. 3 IS 75 PACES SOUTH OF THE CENTERLINE OF
 JV4020'E. SUNSET AVENUE EXTENDED.  THE MARK IS A STANDARD DISK SET
 JV4020'FLUSH IN A CONCRETE MONUMENT ABOUT 10 INCHES IN DIAMETER, FLUSH
 JV4020'WITH THE GROUND AND THE DISK IS STAMPED GREENLAWN 2 NO 3 1966
 JV4020'BM RESET.
 JV4020'
 JV4020'REFERENCE MARK NO. 4 IS A STANDARD DISK SET FLUSH IN THE TOP OF
 JV4020'A CONCRETE MONUMENT ABOUT 10 INCHES IN DIAMETER, FLUSH WITH THE
 JV4020'GROUND AND THE DISK IS STAMPED GREENLAWN 2 NO 4 1966 BM RESET.
 JV4020
 JV4020                          STATION RECOVERY (1966)
 JV4020
 JV4020'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV4020'0.9 MI SE FROM WILLIAMSPORT.
 JV4020'ABOUT 0.4 MILE SOUTH ALONG SOUTH ARTIZAN STREET FROM THE INTERSECTION
 JV4020'OF U.S. HIGHWAY 11 AND SOUTH ARTIZAN STREET IN WILLIAMSPORT, THEN
 JV4020'0.5 MILE EAST ALONG EAST SUNSET AVE. TO THE END OF STREET, TO MARK
 JV4020'ON RIGHT ABOUT 85 PACES SOUTH OF CENTERLINE OF STREET EXTENDED, 230
 JV4020'FEET EAST OF THE CENTERLINE OF CEMETERY DRIVEWAY AND 1.0 FOOT NORTH OF
 JV4020'A STEEL WITNESS POST. THE MARK IS ABOUT 10 INCHES IN DIAMETER AND
 JV4020'FLUSH WITH THE GROUND.
 JV4020
 JV4020                          STATION RECOVERY (1981)
 JV4020
 JV4020'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981 (RGP)
 JV4020'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION
 JV4020'AS DESCRIBED.
 JV4020
 JV4020                          STATION RECOVERY (1991)
 JV4020
 JV4020'RECOVERY NOTE BY US POWER SQUADRON 1991 (WPG)
 JV4020'RECOVERED IN GOOD CONDITION.
 JV4020
 JV4020                          STATION RECOVERY (2007)
 JV4020
 JV4020'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV4020'MARK IS 50 DEGREES FROM GREENLAWN CEMETARY FLAG POLE AT SNOOK
 JV4020'MEMORIAL, 230 FEET TO A CHAIN LINK FENCE. THENCE 10.7 FEET E.
 JV4020'PERPENDICULAR TO THE FENCE.  MARK IS AT THE BASE OF A WITNESS POLE
 JV4020'VISIBLE FROM THE FENCE LINE AND LOCATED AT THE CREST OF THE I 81
 JV4020'RIGHT-OF-WAY GRADING IN HEAVY GRASS AND LIGHT BRUSH.  NO SEARCH WAS
 JV4020'MADE FOR REFERENCE MARKS AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3346 ***********************************************************************
 JV3346  DESIGNATION -  GREENLAWN 2 RM 3
 JV3346  PID         -  JV3346
 JV3346  STATE/COUNTY-  MD/WASHINGTON
 JV3346  COUNTRY     -  US
 JV3346  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3346
 JV3346                         *CURRENT SURVEY CONTROL
 JV3346  ______________________________________________________________________
 JV3346* NAD 83(1986) POSITION- 39 35 29.96   (N) 077 48 41.87   (W)   HD_HELD1
 JV3346* NAVD 88 ORTHO HEIGHT -   142.01  (+/-2cm)      465.9   (feet) VERTCON3
 JV3346  ______________________________________________________________________
 JV3346  GEOID HEIGHT    -        -34.229 (meters)                     GEOID18
 JV3346  VERT ORDER      -  THIRD (See Below)
 JV3346
 JV3346.The horizontal coordinates were determined by differentially corrected
 JV3346.hand held GPS observations or other comparable positioning techniques
 JV3346.and have an estimated accuracy of +/- 3 meters.
 JV3346
 JV3346.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3346.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3346
 JV3346.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3346.GEOID18 height accuracy estimate available here.
 JV3346
 JV3346.The vertical order pertains to the NGVD 29 superseded value.
 JV3346
 JV3346.Click photographs - Photos may exist for this station.
 JV3346
 JV3346;                    North         East    Units  Estimated Accuracy
 JV3346;SPC MD       -   214,001.2     330,279.6     MT  (+/- 3 meters HH1 GPS) 
 JV3346
 JV3346_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5855886213(NAD 83)
 JV3346
 JV3346                          SUPERSEDED SURVEY CONTROL
 JV3346
 JV3346  NGVD 29 (??/??/??)  142.21   (m)          466.6    (f) RESET       3  
 JV3346
 JV3346.Superseded values are not recommended for survey control.
 JV3346
 JV3346.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3346.See file dsdata.pdf to determine how the superseded data were derived.
 JV3346
 JV3346_MARKER: DR = REFERENCE MARK DISK
 JV3346_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3346_STAMPING: GREENLAWN 2 NO 3 1966 BM RESET
 JV3346_MARK LOGO: CGS
 JV3346_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3346+STABILITY: SURFACE MOTION
 JV3346
 JV3346  HISTORY     - Date     Condition        Report By
 JV3346  HISTORY     - 1966     MONUMENTED       CGS
 JV3346
 JV3346                          STATION DESCRIPTION
 JV3346
 JV3346'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 JV3346'0.9 MI SE FROM WILLIAMSPORT.
 JV3346'ABOUT 0.4 MILE SOUTH ALONG SOUTH ARTIZAN STREET FROM THE INTERSECTION
 JV3346'OF U.S. HIGHWAY 11 AND SOUTH ARTIZAN STREET IN WILLIAMSPORT,
 JV3346'THEN 0.5 MILE EAST ALONG EAST SUNSET AVENUE TO THE END OF STREET,
 JV3346'TO MARK ON RIGHT ABOUT 75 PACES SOUTH OF CENTERLINE OF STREET
 JV3346'EXTENDED, 32 FEET NORTH OF TRIANGULATION STATION GREENLAWN 2
 JV3346'DESCRIBED, ALONG THE RIGHT OF WAY OF INTERSTATE HIGHWAY 81 AND
 JV3346'AT THE EAST EDGE OF THE GREENLAWN CEMETERY.  THE MARK IS ABOUT 10
 JV3346'INCHES IN DIAMETER AND FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3613 ***********************************************************************
 JV3613  DESIGNATION -  GREENLAWN 2 RM 4
 JV3613  PID         -  JV3613
 JV3613  STATE/COUNTY-  MD/WASHINGTON
 JV3613  COUNTRY     -  US
 JV3613  USGS QUAD   -  WILLIAMSPORT (2017)
 JV3613
 JV3613                         *CURRENT SURVEY CONTROL
 JV3613  ______________________________________________________________________
 JV3613* NAD 83(1986) POSITION- 39 35 29.46   (N) 077 48 42.35   (W)   HD_HELD1
 JV3613* NAVD 88 ORTHO HEIGHT -   141.86  (+/-2cm)      465.4   (feet) VERTCON3
 JV3613  ______________________________________________________________________
 JV3613  GEOID HEIGHT    -        -34.229 (meters)                     GEOID18
 JV3613  VERT ORDER      -  THIRD (See Below)
 JV3613
 JV3613.The horizontal coordinates were determined by differentially corrected
 JV3613.hand held GPS observations or other comparable positioning techniques
 JV3613.and have an estimated accuracy of +/- 3 meters.
 JV3613
 JV3613.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV3613.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV3613
 JV3613.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3613.GEOID18 height accuracy estimate available here.
 JV3613
 JV3613.The vertical order pertains to the NGVD 29 superseded value.
 JV3613
 JV3613.Click photographs - Photos may exist for this station.
 JV3613
 JV3613;                    North         East    Units  Estimated Accuracy
 JV3613;SPC MD       -   213,985.9     330,268.0     MT  (+/- 3 meters HH1 GPS) 
 JV3613
 JV3613_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5854686198(NAD 83)
 JV3613
 JV3613                          SUPERSEDED SURVEY CONTROL
 JV3613
 JV3613  NGVD 29 (??/??/??)  142.06   (m)          466.1    (f) RESET       3  
 JV3613
 JV3613.Superseded values are not recommended for survey control.
 JV3613
 JV3613.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3613.See file dsdata.pdf to determine how the superseded data were derived.
 JV3613
 JV3613_MARKER: DR = REFERENCE MARK DISK
 JV3613_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3613_STAMPING: GREENLAWN 2 NO 4 1966 BM RESET
 JV3613_MARK LOGO: CGS
 JV3613_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3613+STABILITY: SURFACE MOTION
 JV3613
 JV3613  HISTORY     - Date     Condition        Report By
 JV3613  HISTORY     - 1966     MONUMENTED       CGS
 JV3613
 JV3613                          STATION DESCRIPTION
 JV3613
 JV3613'DESCRIBED BY COAST AND GEODETIC SURVEY 1966
 JV3613'0.9 MI SE FROM WILLIAMSPORT.
 JV3613'ABOUT 0.4 MILES SOUTH ALONG SOUTH ARTIZAN STREET FROM THE INTERSECTION
 JV3613'OF U.S. HIGHWAY 11 AND SOUTH ARTIZAN STREET IN WILLIAMSPORT, THEN
 JV3613'0.5 MILE EAST ALONG EAST SUNSET AVE. TO THE END OF STREET, TO MARK ON
 JV3613'RIGHT ABOUT 95 PACES SOUTH OF CENTERLINE OF STREET EXTENDED, 31 FEET
 JV3613'SOUTH OF TRIANGULATION STATION GREENLAWN 2 DESCRIBED, ALONG THE RIGHT
 JV3613'OF WAY OF INTETATE HIGHWAY 81 AND AT THE EAST EDGE OF THE GREENLAWN
 JV3613'CEMETERY. THE MARK IS ABOUT 10 INCHES IN DIAMETER AND FLUSH WITH THE
 JV3613'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7616 ***********************************************************************
 DG7616  DESIGNATION -  GREENSBORO
 DG7616  PID         -  DG7616
 DG7616  STATE/COUNTY-  MD/CAROLINE
 DG7616  COUNTRY     -  US
 DG7616  USGS QUAD   -  DENTON (2017)
 DG7616
 DG7616                         *CURRENT SURVEY CONTROL
 DG7616  ______________________________________________________________________
 DG7616* NAD 83(1986) POSITION- 38 59 09.6    (N) 075 47 56.5    (W)   HD_HELD2
 DG7616* NAVD 88 ORTHO HEIGHT -    13.020 (meters)       42.72  (feet) ADJUSTED
 DG7616  ______________________________________________________________________
 DG7616  GEOID HEIGHT    -        -34.587 (meters)                     GEOID18
 DG7616  DYNAMIC HEIGHT  -         13.013 (meters)       42.69  (feet) COMP
 DG7616  MODELED GRAVITY -    980,058.1   (mgal)                       NAVD 88
 DG7616
 DG7616  VERT ORDER      -  SECOND    CLASS I
 DG7616
 DG7616.The horizontal coordinates were established by autonomous hand held GPS
 DG7616.observations and have an estimated accuracy of +/- 10 meters.
 DG7616
 DG7616.The orthometric height was determined by differential leveling and
 DG7616.adjusted by the NATIONAL GEODETIC SURVEY
 DG7616.in December 2004.
 DG7616
 DG7616.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7616.GEOID18 height accuracy estimate available here.
 DG7616
 DG7616.Click photographs - Photos may exist for this station.
 DG7616
 DG7616.The dynamic height is computed by dividing the NAVD 88
 DG7616.geopotential number by the normal gravity value computed on the
 DG7616.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7616.degrees latitude (g = 980.6199 gals.).
 DG7616
 DG7616.The modeled gravity was interpolated from observed gravity values.
 DG7616
 DG7616;                    North         East    Units  Estimated Accuracy
 DG7616;SPC MD       -   147,136.      504,048.      MT  (+/- 10 meters HH2 GPS)
 DG7616
 DG7616_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3079615526(NAD 83)
 DG7616
 DG7616                          SUPERSEDED SURVEY CONTROL
 DG7616
 DG7616.No superseded survey control is available for this station.
 DG7616
 DG7616_MARKER: DD = SURVEY DISK
 DG7616_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7616_STAMPING: GREENSBORO 1992
 DG7616_MARK LOGO: MDSHA
 DG7616_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7616_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7616+STABILITY: SURFACE MOTION
 DG7616_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7616+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2006
 DG7616
 DG7616  HISTORY     - Date     Condition        Report By
 DG7616  HISTORY     - 1992     MONUMENTED       MDSHA
 DG7616  HISTORY     - 20021001 GOOD             MDSHA
 DG7616  HISTORY     - 20061215 GOOD             USPSQD
 DG7616
 DG7616                          STATION DESCRIPTION
 DG7616
 DG7616'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7616'THE STATION IS LOCATED ABOUT 1 MILE NORTH OF GREENSBORO.  TO REACH THE
 DG7616'STATION FROM THE INTERSECTION OF STATE HIGHWAY 313 AND STATE HIGHWAY
 DG7616'314, EAST OF GREENSBORO, GO NORTH ALONG STATE HIGHWAY 313 FOR 0.95 MI
 DG7616'(1.53 KM) TO STATE HIGHWAY 480.  CONTINUE NORTH ALONG STATE HIGHWAY
 DG7616'313 FOR 0.05 MI (0.08 KM) TO A FIELD ENTRANCE AND STATION ON THE LEFT.
 DG7616'THE STATION IS A MARYLAND STATE SURVEY DISK SET IN THE TOP OF A 12
 DG7616'INCH (30 CM) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.
 DG7616'IT IS 43.7 FT (13.3 M) NORTHWEST OF THE CENTER LINE OF THE HIGHWAY,
 DG7616'72.0 FT (21.9 M) SOUTHWEST OF THE SOUTHWEST END OF A METAL PIPE
 DG7616'RUNNING UNDER THE FIELD ENTRANCE, 57.8 FT (17.6 M) SOUTH OF TELEPHONE
 DG7616'POLE NUMBER 867, 21.0 FT (6.4 M) NORTHWEST OF THE CENTER OF A METAL
 DG7616'PIPE WITH HEADWALL, AND 6.8 FT (2.1 M) NORTH OF THE NORTHWEST CORNER
 DG7616'OF A 3 FOOT SQUARE CONCRETE PAD.
 DG7616
 DG7616                          STATION RECOVERY (2006)
 DG7616
 DG7616'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 DG7616'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG7615 ***********************************************************************
 DG7615  DESIGNATION -  GREENSBORO AZ MK
 DG7615  PID         -  DG7615
 DG7615  STATE/COUNTY-  MD/CAROLINE
 DG7615  COUNTRY     -  US
 DG7615  USGS QUAD   -  DENTON (2017)
 DG7615
 DG7615                         *CURRENT SURVEY CONTROL
 DG7615  ______________________________________________________________________
 DG7615* NAD 83(1986) POSITION- 38 58 58.6    (N) 075 48 04.3    (W)   HD_HELD2
 DG7615* NAVD 88 ORTHO HEIGHT -    12.728 (meters)       41.76  (feet) ADJUSTED
 DG7615  ______________________________________________________________________
 DG7615  GEOID HEIGHT    -        -34.594 (meters)                     GEOID18
 DG7615  DYNAMIC HEIGHT  -         12.721 (meters)       41.74  (feet) COMP
 DG7615  MODELED GRAVITY -    980,057.5   (mgal)                       NAVD 88
 DG7615
 DG7615  VERT ORDER      -  SECOND    CLASS I
 DG7615
 DG7615.The horizontal coordinates were established by autonomous hand held GPS
 DG7615.observations and have an estimated accuracy of +/- 10 meters.
 DG7615
 DG7615.The orthometric height was determined by differential leveling and
 DG7615.adjusted by the NATIONAL GEODETIC SURVEY
 DG7615.in December 2004.
 DG7615
 DG7615.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG7615.GEOID18 height accuracy estimate available here.
 DG7615
 DG7615.Click photographs - Photos may exist for this station.
 DG7615
 DG7615.The dynamic height is computed by dividing the NAVD 88
 DG7615.geopotential number by the normal gravity value computed on the
 DG7615.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG7615.degrees latitude (g = 980.6199 gals.).
 DG7615
 DG7615.The modeled gravity was interpolated from observed gravity values.
 DG7615
 DG7615;                    North         East    Units  Estimated Accuracy
 DG7615;SPC MD       -   146,795.      503,865.      MT  (+/- 10 meters HH2 GPS)
 DG7615
 DG7615_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3060615189(NAD 83)
 DG7615
 DG7615                          SUPERSEDED SURVEY CONTROL
 DG7615
 DG7615.No superseded survey control is available for this station.
 DG7615
 DG7615_MARKER: DD = SURVEY DISK
 DG7615_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG7615_STAMPING: GREENSBORO AZ 2002
 DG7615_MARK LOGO: MDSHA
 DG7615_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG7615_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG7615+STABILITY: SURFACE MOTION
 DG7615_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG7615+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2006
 DG7615
 DG7615  HISTORY     - Date     Condition        Report By
 DG7615  HISTORY     - 2002     MONUMENTED       MDSHA
 DG7615  HISTORY     - 20061215 GOOD             USPSQD
 DG7615
 DG7615                          STATION DESCRIPTION
 DG7615
 DG7615'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG7615'THE STATION IS LOCATED IN THE TOWN OF GREENSBORO, ON THE PROPERTY OF
 DG7615'THE GREENSBORO ELEMETERY SCHOOL.  TO REACH THE STATION FROM THE
 DG7615'INTERSECTION OF MAIN STREET AND SUNSET AVENUE IN GREENSBORO, GO NORTH
 DG7615'ALONG MAIN STREET FOR 0.7 MI (1.0 KM) TO THE SOUTH CORNER OF THE
 DG7615'SCHOOL PROPERTY AND THE STATION ON THE LEFT.  THE STATION IS A
 DG7615'MARYLAND STATE SURVEY DISK SET IN THE TOP OF A 12 INCH (30 CM) ROUND
 DG7615'CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  IT IS 31.4 FT (9.6
 DG7615'M) NORTHWEST OF THE CENTER LINE OF MAIN STREET, 31.5 FT (9.6 M)
 DG7615'NORTHEAST OF TELEPHONE POLE NUMBER 87, 60.5 FT (18.4 M) NORTHEAST OF A
 DG7615'FIRE HYDRANT, 49.0 FT (14.9 M) EAST OF A 24 INCH (61 CM) CEDAR TREE,
 DG7615'AND 111.0 FEET SOUTHWEST OF THE SOUTH CORNER OF THE SCHOOL PARKING
 DG7615'LOT.
 DG7615
 DG7615                          STATION RECOVERY (2006)
 DG7615
 DG7615'RECOVERY NOTE BY US POWER SQUADRON 2006 (KNC)
 DG7615'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2097 ***********************************************************************
 HU2097  DESIGNATION -  GREENSBORO PET MILK CO STACK
 HU2097  PID         -  HU2097
 HU2097  STATE/COUNTY-  MD/CAROLINE
 HU2097  COUNTRY     -  US
 HU2097  USGS QUAD   -  DENTON (2017)
 HU2097
 HU2097                         *CURRENT SURVEY CONTROL
 HU2097  ______________________________________________________________________
 HU2097* NAD 83(1991) POSITION- 38 58 45.90757(N) 075 48 55.47814(W)   ADJUSTED
 HU2097  ______________________________________________________________________
 HU2097  GEOID HEIGHT    -        -34.581 (meters)                     GEOID18
 HU2097  LAPLACE CORR    -         -3.52  (seconds)                    DEFLEC18
 HU2097  HORZ ORDER      -  THIRD
 HU2097
 HU2097.The horizontal coordinates were established by classical geodetic methods
 HU2097.and adjusted by the National Geodetic Survey in January 1992.
 HU2097
 HU2097.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2097.GEOID18 height accuracy estimate available here.
 HU2097
 HU2097.Click photographs - Photos may exist for this station.
 HU2097
 HU2097.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2097
 HU2097. The following values were computed from the NAD 83(1991) position.
 HU2097
 HU2097;                    North         East     Units Scale Factor Converg.
 HU2097;SPC MD       -   146,387.432   502,638.581   MT  0.99995148   +0 44 36.6
 HU2097;SPC MD       -   480,272.77  1,649,073.41   sFT  0.99995148   +0 44 36.6
 HU2097;UTM  18      - 4,314,808.821   429,371.213   MT  0.99966142   -0 30 46.6
 HU2097
 HU2097_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2937114808(NAD 83)
 HU2097
 HU2097                          SUPERSEDED SURVEY CONTROL
 HU2097
 HU2097  NAD 83(1986)-  38 58 45.90044(N)    075 48 55.49065(W) AD(       ) 3
 HU2097  NAD 27      -  38 58 45.49400(N)    075 48 56.73100(W) AD(       ) 3
 HU2097
 HU2097.Superseded values are not recommended for survey control.
 HU2097
 HU2097.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2097.See file dsdata.pdf to determine how the superseded data were derived.
 HU2097
 HU2097_MARKER: 63 = STACK
 HU2097
 HU2097  HISTORY     - Date     Condition        Report By
 HU2097  HISTORY     - 1934     FIRST OBSERVED   CGS
 HU2097  HISTORY     - 1943     GOOD             CGS
 HU2097
 HU2097                          STATION DESCRIPTION
 HU2097
 HU2097'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HU2097'STATION IS LOCATED IN THE TOWN OF GREENSBORO, AT ITS N LIMITS,
 HU2097'JUST N OF THE RAILROAD, AND ABOUT 2,000 FEET NE OF THE RAILROAD
 HU2097'STATION.  THE STATION IS THE WHITE STACK OF THE GREENSBORO PET
 HU2097'MILK COMPANY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5957 ***********************************************************************
 HV5957  DESIGNATION -  GREENWELL
 HV5957  PID         -  HV5957
 HV5957  STATE/COUNTY-  MD/DORCHESTER
 HV5957  COUNTRY     -  US
 HV5957  USGS QUAD   -  CHURCH CREEK (2016)
 HV5957
 HV5957                         *CURRENT SURVEY CONTROL
 HV5957  ______________________________________________________________________
 HV5957* NAD 83(1991) POSITION- 38 32 47.35690(N) 076 14 00.42976(W)   ADJUSTED
 HV5957* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5957  ______________________________________________________________________
 HV5957  GEOID HEIGHT    -        -34.719 (meters)                     GEOID18
 HV5957  LAPLACE CORR    -         -5.45  (seconds)                    DEFLEC18
 HV5957  HORZ ORDER      -  THIRD
 HV5957
 HV5957.The horizontal coordinates were established by classical geodetic methods
 HV5957.and adjusted by the National Geodetic Survey in January 1992.
 HV5957
 HV5957.The orthometric height was scaled from a topographic map.
 HV5957
 HV5957.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5957.GEOID18 height accuracy estimate available here.
 HV5957
 HV5957.Click photographs - Photos may exist for this station.
 HV5957
 HV5957.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5957
 HV5957. The following values were computed from the NAD 83(1991) position.
 HV5957
 HV5957;                    North         East     Units Scale Factor Converg.
 HV5957;SPC MD       -    97,944.185   466,822.000   MT  0.99996627   +0 28 52.0
 HV5957;SPC MD       -   321,338.55  1,531,565.18   sFT  0.99996627   +0 28 52.0
 HV5957;UTM  18      - 4,267,172.866   392,512.837   MT  0.99974228   -0 46 07.3
 HV5957
 HV5957!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5957!SPC MD       -   1.00000533  x   0.99996627  =   0.99997160
 HV5957!UTM  18      -   1.00000533  x   0.99974228  =   0.99974761
 HV5957
 HV5957:                Primary Azimuth Mark                     Grid Az
 HV5957:SPC MD       -  ROSS MSFC 1910                           061 47 52.5
 HV5957:UTM  18      -  ROSS MSFC 1910                           063 02 51.8
 HV5957
 HV5957_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9251267172(NAD 83)
 HV5957
 HV5957|---------------------------------------------------------------------|
 HV5957| PID    Reference Object                     Distance      Geod. Az  |
 HV5957|                                                           dddmmss.s |
 HV5957| HV5893 ROSS MSFC 1910                      APPROX. 1.2 KM 0621644.5 |
 HV5957| CX2825 GREENWELL RM                         27.780 METERS 32450     |
 HV5957|---------------------------------------------------------------------|
 HV5957
 HV5957                          SUPERSEDED SURVEY CONTROL
 HV5957
 HV5957  NAD 83(1986)-  38 32 47.35462(N)    076 14 00.44524(W) AD(       ) 3
 HV5957  NAD 27      -  38 32 46.94400(N)    076 14 01.63000(W) AD(       ) 3
 HV5957  USSD        -  38 32 47.32900(N)    076 14 01.41100(W) AD(       ) 3
 HV5957
 HV5957.Superseded values are not recommended for survey control.
 HV5957
 HV5957.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5957.See file dsdata.pdf to determine how the superseded data were derived.
 HV5957
 HV5957_MARKER: Z = SEE DESCRIPTION
 HV5957_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5957
 HV5957  HISTORY     - Date     Condition        Report By
 HV5957  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5957
 HV5957                          STATION DESCRIPTION
 HV5957
 HV5957'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910
 HV5957'ON NORTHWESTERN SHORE OF LITTLE CHOPTANK RIVER, ON POINT OF LAND
 HV5957'AT N SIDE OF ENTRANCE TO COVE BETWEEN BUTTER POT POINT AND CEDAR
 HV5957'POINT, ON A MARSH POINT ABOUT 1 FOOT ABOVE HIGH WATER, 5 YARDS N
 HV5957'OF SHORE, 13 YARDS SW OF SHORE, AND 25 YARDS NW OF EXTREME END OF
 HV5957'POINT.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV5957'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV5957'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV5957'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5958 ***********************************************************************
 HV5958  DESIGNATION -  GREENWELL 1901
 HV5958  PID         -  HV5958
 HV5958  STATE/COUNTY-  MD/DORCHESTER
 HV5958  COUNTRY     -  US
 HV5958  USGS QUAD   -  CHURCH CREEK (2016)
 HV5958
 HV5958                         *CURRENT SURVEY CONTROL
 HV5958  ______________________________________________________________________
 HV5958* NAD 83(1991) POSITION- 38 32 47.34356(N) 076 14 00.37222(W)   ADJUSTED
 HV5958* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5958  ______________________________________________________________________
 HV5958  GEOID HEIGHT    -        -34.719 (meters)                     GEOID18
 HV5958  LAPLACE CORR    -         -5.45  (seconds)                    DEFLEC18
 HV5958  HORZ ORDER      -  THIRD
 HV5958
 HV5958.The horizontal coordinates were established by classical geodetic methods
 HV5958.and adjusted by the National Geodetic Survey in January 1992.
 HV5958
 HV5958.The orthometric height was scaled from a topographic map.
 HV5958
 HV5958.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5958.GEOID18 height accuracy estimate available here.
 HV5958
 HV5958.Click photographs - Photos may exist for this station.
 HV5958
 HV5958.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5958
 HV5958. The following values were computed from the NAD 83(1991) position.
 HV5958
 HV5958;                    North         East     Units Scale Factor Converg.
 HV5958;SPC MD       -    97,943.786   466,823.397   MT  0.99996627   +0 28 52.0
 HV5958;SPC MD       -   321,337.24  1,531,569.76   sFT  0.99996627   +0 28 52.0
 HV5958;UTM  18      - 4,267,172.436   392,514.224   MT  0.99974227   -0 46 07.3
 HV5958
 HV5958!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5958!SPC MD       -   1.00000533  x   0.99996627  =   0.99997160
 HV5958!UTM  18      -   1.00000533  x   0.99974227  =   0.99974760
 HV5958
 HV5958:                Primary Azimuth Mark                     Grid Az
 HV5958:SPC MD       -  TOBACCO STICK 1901                       179 19 03.8
 HV5958:UTM  18      -  TOBACCO STICK 1901                       180 34 03.1
 HV5958
 HV5958_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9251467172(NAD 83)
 HV5958
 HV5958|---------------------------------------------------------------------|
 HV5958| PID    Reference Object                     Distance      Geod. Az  |
 HV5958|                                                           dddmmss.s |
 HV5958| HV5922 TOBACCO STICK 1901                  APPROX. 2.2 KM 1794755.8 |
 HV5958|---------------------------------------------------------------------|
 HV5958
 HV5958                          SUPERSEDED SURVEY CONTROL
 HV5958
 HV5958  NAD 83(1986)-  38 32 47.34124(N)    076 14 00.38778(W) AD(       ) 3
 HV5958  NAD 27      -  38 32 46.93200(N)    076 14 01.57200(W) AD(       ) 3
 HV5958  USSD        -  38 32 47.31900(N)    076 14 01.37000(W) AD(       ) 3
 HV5958
 HV5958.Superseded values are not recommended for survey control.
 HV5958
 HV5958.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5958.See file dsdata.pdf to determine how the superseded data were derived.
 HV5958
 HV5958
 HV5958  HISTORY     - Date     Condition        Report By
 HV5958  HISTORY     - 1901     MONUMENTED       CGS
 HV5958  HISTORY     - 1910     GOOD             CGS
 HV5958
 HV5958                          STATION DESCRIPTION
 HV5958
 HV5958'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV5958'ON NORTHWESTERN SHORE OF LITTLE CHOPTANK RIVER, ON POINT OF LAND
 HV5958'AT N SIDE OF ENTRANCE TO COVE BETWEEN BUTTER POT POINT AND CEDAR
 HV5958'POINT, ON A MARSH POINT ABOUT 1 FOOT ABOVE HIGH WATER, 5 YARDS N
 HV5958'OF SHORE, 13 YARDS SW OF SHORE, AND 25 YARDS NW OF EXTREME END OF
 HV5958'POINT.  STATION MARK IS NAIL IN PINE STUB PROJECTING 12 INCHES
 HV5958'ABOVE SURFACE OF GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN
 HV5958'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5958'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5958'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5958'COUNTER-SUNK IN TOP OF POST.  IT IS 27.78 METERS (91.1 FEET) FROM
 HV5958'THE STATION N 35 DEG 10 MIN W.  OTHER DISTANCES AND BEARINGS ARE
 HV5958'AS FOLLOWS--LEFT PEAK OF LARGE HOUSE, 2 MILES, S 8 DEG 45 MIN W.
 HV5958'CENTER OF CHIMNEY OF HOUSE, 1 MILE, S 71 DEG 20 MIN W.  NEAR PEAK
 HV5958'OF BARN, 5/8 MILE, N 44 DEG 29 MIN W.  NEAR PEAK OF BARN, 1/4
 HV5958'MILE, N 11 DEG 42 MIN E.  LEFT CHIMNEY OF HOUSE, 1/4 MILE, N 17
 HV5958'DEG 6 MIN E.  CENTER CHIMNEY OF HOUSE, 3/4 MILE, N 47 DEG 15 MIN
 HV5958'E.  NEAR PEAK OF BARN, 1-3/8 MILES, S 85 DEG 4 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5814 ***********************************************************************
 HV5814  DESIGNATION -  GREENWOOD
 HV5814  PID         -  HV5814
 HV5814  STATE/COUNTY-  MD/QUEEN ANNES
 HV5814  COUNTRY     -  US
 HV5814  USGS QUAD   -  QUEENSTOWN (2016)
 HV5814
 HV5814                         *CURRENT SURVEY CONTROL
 HV5814  ______________________________________________________________________
 HV5814* NAD 83(1991) POSITION- 38 53 24.16366(N) 076 12 20.83449(W)   ADJUSTED
 HV5814* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5814  ______________________________________________________________________
 HV5814  GEOID HEIGHT    -        -34.099 (meters)                     GEOID18
 HV5814  LAPLACE CORR    -         -4.71  (seconds)                    DEFLEC18
 HV5814  HORZ ORDER      -  THIRD
 HV5814
 HV5814.The horizontal coordinates were established by classical geodetic methods
 HV5814.and adjusted by the National Geodetic Survey in January 1992.
 HV5814
 HV5814.The orthometric height was scaled from a topographic map.
 HV5814
 HV5814.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5814.GEOID18 height accuracy estimate available here.
 HV5814
 HV5814.Click photographs - Photos may exist for this station.
 HV5814
 HV5814.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5814
 HV5814. The following values were computed from the NAD 83(1991) position.
 HV5814
 HV5814;                    North         East     Units Scale Factor Converg.
 HV5814;SPC MD       -   136,099.995   468,901.819   MT  0.99994988   +0 29 54.5
 HV5814;SPC MD       -   446,521.40  1,538,388.72   sFT  0.99994988   +0 29 54.5
 HV5814;UTM  18      - 4,305,265.832   395,425.698   MT  0.99973466   -0 45 25.5
 HV5814
 HV5814!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5814!SPC MD       -   1.00000538  x   0.99994988  =   0.99995526
 HV5814!UTM  18      -   1.00000538  x   0.99973466  =   0.99974004
 HV5814
 HV5814:                Primary Azimuth Mark                     Grid Az
 HV5814:SPC MD       -  BENNETT                                  179 44 44.1
 HV5814:UTM  18      -  BENNETT                                  181 00 04.1
 HV5814
 HV5814_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9542505265(NAD 83)
 HV5814
 HV5814|---------------------------------------------------------------------|
 HV5814| PID    Reference Object                     Distance      Geod. Az  |
 HV5814|                                                           dddmmss.s |
 HV5814| HV5720 BENNETT                             APPROX. 4.2 KM 1801438.6 |
 HV5814|---------------------------------------------------------------------|
 HV5814
 HV5814                          SUPERSEDED SURVEY CONTROL
 HV5814
 HV5814  NAD 83(1986)-  38 53 24.15921(N)    076 12 20.84748(W) AD(       ) 3
 HV5814  NAD 27      -  38 53 23.72500(N)    076 12 22.03400(W) AD(       ) 3
 HV5814  USSD        -  38 53 24.11800(N)    076 12 21.81200(W) AD(       ) 3
 HV5814
 HV5814.Superseded values are not recommended for survey control.
 HV5814
 HV5814.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5814.See file dsdata.pdf to determine how the superseded data were derived.
 HV5814
 HV5814_MARKER: N = NAIL
 HV5814_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5814
 HV5814  HISTORY     - Date     Condition        Report By
 HV5814  HISTORY     - 1899     MONUMENTED       CGS
 HV5814  HISTORY     - 20030423 MARK NOT FOUND   USPSQD
 HV5814
 HV5814                          STATION DESCRIPTION
 HV5814
 HV5814'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (JWD)
 HV5814'STATION IS ON EASTERN SIDE OF EASTERN BAY, ON NORTHERN END OF
 HV5814'SMALL GRASSY ISLAND AT THE MOUTH OF GREENWOOD CREEK.  MARKED BY
 HV5814'NAIL IN TOP OF A CEDAR POST, THE TOP OF THE POST BEING EVEN WITH
 HV5814'THE SURFACE OF THE GROUND.
 HV5814
 HV5814                          STATION RECOVERY (2003)
 HV5814
 HV5814'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HV5814'SEE NOAA CHART 12270, ED 31, 09-08-01.  PINEY NECK POINT SUBJECT TO
 HV5814'SEVERE EROSION, REFERENCED GRASSY ISLAND ERODED TO DEPTH OF 1 FOOT AT
 HV5814'MLLW.  STATION PLOTS IN THE WATER, EROSION HAS BEEN OBSERVED BY BOAT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6460 ***********************************************************************
 JV6460  DESIGNATION -  GRESHAM
 JV6460  PID         -  JV6460
 JV6460  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6460  COUNTRY     -  US
 JV6460  USGS QUAD   -  GIBSON ISLAND (2017)
 JV6460
 JV6460                         *CURRENT SURVEY CONTROL
 JV6460  ______________________________________________________________________
 JV6460* NAD 83(1991) POSITION- 39 07 12.37564(N) 076 25 55.03058(W)   ADJUSTED
 JV6460* NAVD 88 ORTHO HEIGHT -    -1.    (meters)       -3.    (feet) SCALED
 JV6460  ______________________________________________________________________
 JV6460  GEOID HEIGHT    -        -33.200 (meters)                     GEOID18
 JV6460  LAPLACE CORR    -         -1.96  (seconds)                    DEFLEC18
 JV6460  HORZ ORDER      -  THIRD
 JV6460
 JV6460.The horizontal coordinates were established by classical geodetic methods
 JV6460.and adjusted by the National Geodetic Survey in January 1992.
 JV6460
 JV6460.The orthometric height was scaled from a topographic map.
 JV6460
 JV6460.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6460.GEOID18 height accuracy estimate available here.
 JV6460
 JV6460.Click photographs - Photos may exist for this station.
 JV6460
 JV6460.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6460
 JV6460. The following values were computed from the NAD 83(1991) position.
 JV6460
 JV6460;                    North         East     Units Scale Factor Converg.
 JV6460;SPC MD       -   161,492.023   449,122.239   MT  0.99995891   +0 21 23.5
 JV6460;SPC MD       -   529,828.41  1,473,495.21   sFT  0.99995891   +0 21 23.5
 JV6460;UTM  18      - 4,331,080.939   376,211.927   MT  0.99978868   -0 54 13.0
 JV6460
 JV6460!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6460!SPC MD       -   1.00000530  x   0.99995891  =   0.99996421
 JV6460!UTM  18      -   1.00000530  x   0.99978868  =   0.99979398
 JV6460
 JV6460_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7621131080(NAD 83)
 JV6460
 JV6460                          SUPERSEDED SURVEY CONTROL
 JV6460
 JV6460  NAD 83(1986)-  39 07 12.37081(N)    076 25 55.04432(W) AD(       ) 3
 JV6460
 JV6460.Superseded values are not recommended for survey control.
 JV6460
 JV6460.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6460.See file dsdata.pdf to determine how the superseded data were derived.
 JV6460
 JV6460_MARKER: DD = SURVEY DISK
 JV6460_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6460_STAMPING: GRESHAM 1983
 JV6460_MARK LOGO: NOS
 JV6460_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6460_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6460+STABILITY: SURFACE MOTION
 JV6460
 JV6460  HISTORY     - Date     Condition        Report By
 JV6460  HISTORY     - 1983     MONUMENTED       NOS
 JV6460
 JV6460                          STATION DESCRIPTION
 JV6460
 JV6460'DESCRIBED BY NATIONAL OCEAN SERVICE 1983 (WVH)
 JV6460'THE STATION IS LOCATED ON
 JV6460'THE SHORELINE OF CHESAPEAKE BAY, ON BODKIN NECK, IN THE
 JV6460'DEVELOPMENT KNOWN AS PINEHURST, AND ON PROPERTY OWNED BY
 JV6460'HUGH GRESHAM AT 8199 BAYSIDE DRIVE, PASADENA, MARYLAND, 21122.
 JV6460'
 JV6460'TO REACH THE STATION FROM THE JUNCTION OF GOVERNOR RICHIE
 JV6460'HIGHWAY AND MD 177, GO EAST ON MD 177 FOR 6.4 KM (4.0 MILES)
 JV6460'TO THE JUNCTION WITH PINEHURST ROAD ON THE
 JV6460'LEFT.  TURN LEFT AND GO EAST AND NORTH ON PINEHURST ROAD
 JV6460'TO THE THIRD ROAD ENTERING FROM THE RIGHT.  TURN RIGHT ON
 JV6460'THIS ROAD AND GO EAST TO THE SHORELINE AND THE STATION.
 JV6460'
 JV6460'THE STATION IS A STANDARD NOS DISK
 JV6460'STAMPED---GRESHAM 1983---,
 JV6460'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 20 CM IN DIAMETER
 JV6460'FLUSH WITH GROUND.  IT IS LOCATED
 JV6460'2.77 METERS (9.1 FT) WEST FROM THE OUTSIDE CORNER OF THE V-SHAPED
 JV6460'
 JV6460'BULKHEAD,
 JV6460'1.05 METERS (3.44 FT) SOUTH FROM A NAIL IN THE NORTH SIDE OF THE
 JV6460'BULKHEAD, AND
 JV6460'0.70 METER (2.30 FT) NORTH FROM A NAIL IN THE SOUTH SIDE OF THE
 JV6460'BULKHEAD.
 JV6460'
 JV6460'HEIGHT OF LIGHT SHOWN ABOVE THE MARK WAS 1.62 METERS.
 JV6460'DESCRIBED BY J. DANIEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1458 ***********************************************************************
 HU1458  DESIGNATION -  GREY
 HU1458  PID         -  HU1458
 HU1458  STATE/COUNTY-  MD/WORCESTER
 HU1458  COUNTRY     -  US
 HU1458  USGS QUAD   -  ASSAWOMAN BAY (2016)
 HU1458
 HU1458                         *CURRENT SURVEY CONTROL
 HU1458  ______________________________________________________________________
 HU1458* NAD 83(1991) POSITION- 38 26 07.57150(N) 075 05 38.91732(W)   ADJUSTED
 HU1458* NAVD 88 ORTHO HEIGHT -     0.5   (meters)        2.    (feet) VERTCON3
 HU1458  ______________________________________________________________________
 HU1458  GEOID HEIGHT    -        -35.926 (meters)                     GEOID18
 HU1458  LAPLACE CORR    -         -0.86  (seconds)                    DEFLEC18
 HU1458  HORZ ORDER      -  SECOND
 HU1458
 HU1458.The horizontal coordinates were established by classical geodetic methods
 HU1458.and adjusted by the National Geodetic Survey in January 1992.
 HU1458
 HU1458.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1458.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1458
 HU1458.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1458.GEOID18 height accuracy estimate available here.
 HU1458
 HU1458.Click photographs - Photos may exist for this station.
 HU1458
 HU1458.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1458
 HU1458. The following values were computed from the NAD 83(1991) position.
 HU1458
 HU1458;                    North         East     Units Scale Factor Converg.
 HU1458;SPC MD       -    87,073.519   566,385.868   MT  0.99997920   +1 11 46.2
 HU1458;SPC MD       -   285,673.70  1,858,217.64   sFT  0.99997920   +1 11 46.2
 HU1458;UTM  18      - 4,254,133.599   491,783.546   MT  0.99960083   -0 03 30.7
 HU1458
 HU1458!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1458!SPC MD       -   1.00000556  x   0.99997920  =   0.99998476
 HU1458!UTM  18      -   1.00000556  x   0.99960083  =   0.99960639
 HU1458
 HU1458:                Primary Azimuth Mark                     Grid Az
 HU1458:SPC MD       -  FENWICK ISLAND                           061 51 14.0
 HU1458:UTM  18      -  FENWICK ISLAND                           063 06 30.9
 HU1458
 HU1458_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9178354133(NAD 83)
 HU1458
 HU1458|---------------------------------------------------------------------|
 HU1458| PID    Reference Object                     Distance      Geod. Az  |
 HU1458|                                                           dddmmss.s |
 HU1458| DC7342 GREY RM 2                            13.885 METERS 04748     |
 HU1458| HU0377 FENWICK ISLAND                      APPROX. 3.9 KM 0630300.2 |
 HU1458| DC7341 GREY RM 1                            21.650 METERS 35209     |
 HU1458|---------------------------------------------------------------------|
 HU1458
 HU1458                          SUPERSEDED SURVEY CONTROL
 HU1458
 HU1458  NAD 83(1986)-  38 26 07.55395(N)    075 05 38.94166(W) AD(       ) 2
 HU1458  NAD 27      -  38 26 07.14621(N)    075 05 40.28195(W) AD(       ) 2
 HU1458  NGVD 29 (07/19/86)    0.7    (m)            2.     (f) VERT ANG       
 HU1458
 HU1458.Superseded values are not recommended for survey control.
 HU1458
 HU1458.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1458.See file dsdata.pdf to determine how the superseded data were derived.
 HU1458
 HU1458_MARKER: DS = TRIANGULATION STATION DISK
 HU1458_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HU1458_STAMPING: GREY 1934
 HU1458_MARK LOGO: CGS
 HU1458_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1458
 HU1458  HISTORY     - Date     Condition        Report By
 HU1458  HISTORY     - 1934     MONUMENTED       CGS
 HU1458  HISTORY     - 1942     GOOD             CGS
 HU1458  HISTORY     - 1958     GOOD             CGS
 HU1458  HISTORY     - 1962     GOOD             CGS
 HU1458  HISTORY     - 1969     GOOD             MDDNR
 HU1458  HISTORY     - 1973     GOOD             MDDNR
 HU1458  HISTORY     - 1978     GOOD             MDDNR
 HU1458
 HU1458                          STATION DESCRIPTION
 HU1458
 HU1458'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1458'ON THE W SIDE OF ASSAWOMAN BAY ON THE N SIDE OF THE ENTRANCE TO
 HU1458'GREY CREEK.  THE STATION IS ON THE NECK OF LAND KNOWN AS CORN
 HU1458'HAMMOCK ON THE S SIDE ABOUT MIDWAY OF ITS LENGTH.  A GROUP OF
 HU1458'SMALL ISLANDS LIE TO THE SE, AND A SMALL CIRCULAR BAY OR BIGHT OF
 HU1458'WATER IS DIRECTLY S OF THE HAMMOCK.  THE MARK IS SET IN FIRM
 HU1458'MARSH GROUND AMONG TALL REEDS NEAR THE WATERS EDGE, AND A NARROW
 HU1458'RIDGE OF HIGH GROUND, COVERED WITH SMALL TREES AND BUSHES, LIES
 HU1458'ABOUT 30 METERS TO THE N.  THE MARK IS 10 METERS N FROM THE S
 HU1458'EDGE OF CORN HAMMOCK AND 13 METERS E FROM A NARROW MARSH CUT
 HU1458'SEPARATING CORN HAMMOCK FROM AN ISLAND ON THE SW.
 HU1458'
 HU1458'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS IN A TILE
 HU1458'AS DESCRIBED.
 HU1458'
 HU1458'THE STATION IS ONLY ACCESSIBLE BY BOAT FROM GREY CREEK, APPROACHED
 HU1458'BY WAY OF THE SMALL BAY OF WATER MENTIONED ABOVE.
 HU1458'
 HU1458'AT. R.M. 1 ANGLE FROM R.M. 2 TO GREY S 39 DEG 45 MIN W.
 HU1458'
 HU1458'AT R.M. 2 ANGLE FROM GREY TO R.M. 1 S 84 DEG 39 MIN W
 HU1458
 HU1458                          STATION RECOVERY (1942)
 HU1458
 HU1458'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1458'THE FOLLOWING DISCREPANCY WAS NOTED IN THE ORIGINAL DESCRIPTION--
 HU1458'
 HU1458'THE STATION LIES ABOUT 100 METERS TO THE N OF A NARROW RIDGE AND
 HU1458'HIGH GROUND, NOT 30 METERS.
 HU1458'
 HU1458'THE STATION IS LOCATED ON THE W SIDE OF ASSAWOMAN BAY ON THE N
 HU1458'SIDE OF THE ENTRANCE TO GREY CREEK, ON THE S SIDE OF THE NECK OF
 HU1458'LAND KNOWN AS CORN HAMMOCK AND ABOUT MIDWAY OF ITS LENGTH.  A GROUP
 HU1458'OF SMALL ISLANDS LIE TO THE SE AND A SMALL CIRCULAR BAY OR BIGHT
 HU1458'OF WATER IS DIRECTLY S OF THE HAMMOCK, SET IN FIRM MARSHLAND
 HU1458'AMONG TALL REEDS NEAR THE WATERS EDGE, AND ABOUT 100 METERS S OF
 HU1458'A NARROW RIDGE OF HIGH GROUND COVERED WITH SMALL TREES AND
 HU1458'BUSHES, 10 METERS N OF THE SOUTHERN SHORE OF CORN HAMMOCK AND
 HU1458'13 METERS E OF A NARROW MARSH CUT, SEPARATING CORN HAMMOCK
 HU1458'FROM AN ISLAND ON THE SW.  THE STATION IS A BRONZE DISK
 HU1458'TRIANGULATION STATION, STAMPED GREY 1934, SET IN CONCRETE IN A
 HU1458'10-INCH TERRA-COTTA PIPE, WHICH PROJECTS 12 INCHES
 HU1458'ABOVE THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1458'
 HU1458'REFERENCE MARK NO. 1 IS LOCATED 21.650 METERS N OF THE
 HU1458'STATION.  THE MARK IS A BRONZE DISK REFERENCE MARK, WITH THE
 HU1458'ARROW POINTING TOWARD THE STATION, STAMPED NO.1 1934, SET IN
 HU1458'CONCRETE, IN A 10-INCH TERRA-COTTA PIPE, EXTENDING 10 INCHES ABOVE
 HU1458'THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1458'
 HU1458'REFERENCE MARK NO. 2 IS LOCATED 13.898 METERS ENE OF THE STATION,
 HU1458'AND 17.938 METERS SE OF REFERENCE MARK NO. 1.  THE MARK IS A
 HU1458'BRONZE DISK REFERENCE MARK, WITH THE ARROW POINTING TOWARD THE
 HU1458'STATION, STAMPED NO.2 1934, SET IN CONCRETE, IN A 10-INCH
 HU1458'TERRA-COTTA PIPE, WHICH EXTENDS 10 INCHES ABOVE THE GROUND.  THE
 HU1458'MARK IS IN GOOD CONDITION.
 HU1458
 HU1458                          STATION RECOVERY (1958)
 HU1458
 HU1458'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1458'STATION RECOVERED AS DESCRIBED.  STATION AND REFERENCE MARK NO. 1
 HU1458'WERE FOUND TO BE IN GOOD CONDITION.  FOUND THAT THE CEMENT AROUND
 HU1458'THE OUTER EDGE HAS BEGUN TO DECAY AND THE TERRA-COTTA IS CRACKED
 HU1458'ON REFERENCE MARK NO. 2.
 HU1458'
 HU1458'STATION IS 3.8 METERS N OF THE S BANK, 12.1 METERS E OF THE W
 HU1458'POINT OF LAND, PROJECTS 8 INCHES, AND THERE IS A 2 BY 4 STAKE ON
 HU1458'EACH SIDE OF THE MARK.
 HU1458'
 HU1458'REFERENCE MARK NO. 1 IS 6.4 METERS E OF SMALL POINT OF LAND THAT
 HU1458'EXTENDS TO THE W., 3.5 METERS N OF THE S BANK OF THE SAME POINT,
 HU1458'AND IT PROJECTS 8 INCHES.
 HU1458'
 HU1458'REFERENCE MARK NO. 2 IS 17.8 METERS E OF THE W BANK, 18.0 METERS
 HU1458'N OF THE S BANK, AND IT PROJECTS 8 INCHES.
 HU1458
 HU1458                          STATION RECOVERY (1962)
 HU1458
 HU1458'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1458'THE STATION MARK AND RM 1 WERE FOUND IN GOOD CONDITION, RM 2
 HU1458'WAS REINFORCED WITH CONCRETE.
 HU1458'
 HU1458'THE STATION IS BEST REACHED BY BOAT FROM FENWICK ISLAND DELAWARE.
 HU1458'
 HU1458'THE STATION AND REFERENCE MARKS ARE AS DESCRIBED.
 HU1458'
 HU1458'HEIGHT OF LIGHT ABOVE STATION MARK 1.90 METERS.
 HU1458
 HU1458                          STATION RECOVERY (1969)
 HU1458
 HU1458'RECOVERY NOTE BY MD DEPT OF NAT RES 1969 (GEH)
 HU1458'RECOVERED BY MDDCBA.
 HU1458'
 HU1458'GREY 1934 GOOD
 HU1458'
 HU1458'RM 1 NOT SEARCHED FOR
 HU1458'
 HU1458'RM 2 NOT SEARCHED FOR
 HU1458'
 HU1458'DESCRIPTION SHOULD SHOW STATION SURROUND BY MANY WOOD STAKES AND
 HU1458'WITNESS MARK IN PLACE AT WEST EDGE OF MONUMENT.  ALSO DESCRIPTION
 HU1458'COULD HAVE ADDED FOR ADDITIONAL LOCATION PURPOSES.  STATION IS
 HU1458'8.2 METERS FROM EXTREME SWLY POINT AND 5.8 METERS NLY OF
 HU1458'SMALL INDENT IN MARSH.
 HU1458
 HU1458                          STATION RECOVERY (1973)
 HU1458
 HU1458'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HU1458'GREY 1934 GOOD
 HU1458'
 HU1458'GREY NO1 1934 FAIR
 HU1458'
 HU1458'GREY NO2 1934 DESTROYED
 HU1458'
 HU1458'RECOVERED AS DESCRIBED WITH CHANGES--NEW WITNESS POST AND SIGN
 HU1458'PLACED ON S SIDE OF STA. REMAINS OF OLD POSTAL SIGN PLACED AT
 HU1458'RM 1.  RM 1 TILE CRACKED RM 2 DESTROYED CONCRETE CRUMBLED AND
 HU1458'DISK GONE.
 HU1458
 HU1458                          STATION RECOVERY (1978)
 HU1458
 HU1458'RECOVERY NOTE BY MD DEPT OF NAT RES 1978 (GEH)
 HU1458'GREY 1934 RECOVERED GOOD.
 HU1458'
 HU1458'GREY NO 1 1934 RECOVERED FAIR.
 HU1458'
 HU1458'RECOVERED AS DESCRIBED.  WITNESS POSTS ARE NOW GONE.
 HU1458'
 HU1458'DISTANCE AND DIRECTION FROM NEAREST TOWN--2 MILES SW OF FENWICK
 HU1458'IS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1472 ***********************************************************************
 HU1472  DESIGNATION -  GREYERS RM 3
 HU1472  PID         -  HU1472
 HU1472  STATE/COUNTY-  MD/WORCESTER
 HU1472  COUNTRY     -  US
 HU1472  USGS QUAD   -  ASSAWOMAN BAY (2016)
 HU1472
 HU1472                         *CURRENT SURVEY CONTROL
 HU1472  ______________________________________________________________________
 HU1472* NAD 83(1991) POSITION- 38 26 56.33374(N) 075 06 38.14213(W)   ADJUSTED
 HU1472* NAVD 88 ORTHO HEIGHT -     0.7   (meters)        2.    (feet) VERTCON3
 HU1472  ______________________________________________________________________
 HU1472  GEOID HEIGHT    -        -35.901 (meters)                     GEOID18
 HU1472  LAPLACE CORR    -         -0.79  (seconds)                    DEFLEC18
 HU1472  HORZ ORDER      -  SECOND
 HU1472
 HU1472.The horizontal coordinates were established by classical geodetic methods
 HU1472.and adjusted by the National Geodetic Survey in January 1992.
 HU1472
 HU1472.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1472.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1472
 HU1472.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1472.GEOID18 height accuracy estimate available here.
 HU1472
 HU1472.Click photographs - Photos may exist for this station.
 HU1472
 HU1472.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1472
 HU1472. The following values were computed from the NAD 83(1991) position.
 HU1472
 HU1472;                    North         East     Units Scale Factor Converg.
 HU1472;SPC MD       -    88,546.877   564,918.716   MT  0.99997742   +1 11 09.1
 HU1472;SPC MD       -   290,507.55  1,853,404.15   sFT  0.99997742   +1 11 09.1
 HU1472;UTM  18      - 4,255,638.161   490,349.548   MT  0.99960115   -0 04 07.6
 HU1472
 HU1472!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1472!SPC MD       -   1.00000553  x   0.99997742  =   0.99998295
 HU1472!UTM  18      -   1.00000553  x   0.99960115  =   0.99960668
 HU1472
 HU1472_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9034955638(NAD 83)
 HU1472
 HU1472|---------------------------------------------------------------------|
 HU1472| PID    Reference Object                     Distance      Geod. Az  |
 HU1472|                                                           dddmmss.s |
 HU1472| HU1470 GREYERS                             390.592 METERS 04259     |
 HU1472| HU1473 GREYERS A 1974                      229.121 METERS 27519     |
 HU1472|---------------------------------------------------------------------|
 HU1472
 HU1472                          SUPERSEDED SURVEY CONTROL
 HU1472
 HU1472  NAD 83(1986)-  38 26 56.31628(N)    075 06 38.16568(W) AD(       ) 2
 HU1472  NAD 27      -  38 26 55.90604(N)    075 06 39.50530(W) AD(       ) 2
 HU1472  NGVD 29 (07/19/86)    0.9    (m)            3.     (f) VERT ANG       
 HU1472
 HU1472.Superseded values are not recommended for survey control.
 HU1472
 HU1472.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1472.See file dsdata.pdf to determine how the superseded data were derived.
 HU1472
 HU1472_MARKER: DR = REFERENCE MARK DISK
 HU1472_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1472_STAMPING: GREYERS NO 3 1974
 HU1472_MARK LOGO: NGS
 HU1472_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1472+STABILITY: SURFACE MOTION
 HU1472_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1472+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2008
 HU1472
 HU1472  HISTORY     - Date     Condition        Report By
 HU1472  HISTORY     - 1974     MONUMENTED       NGS
 HU1472  HISTORY     - 20080915 GOOD             GEOCAC
 HU1472
 HU1472                          STATION DESCRIPTION
 HU1472
 HU1472'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
 HU1472'REFERENCE MARK 3, A STANDARD DISK STAMPED GREYERS NO 3 1974,
 HU1472'IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT
 HU1472'THAT PROJECTS 2 INCHES ABOVE THE GROUND SURFACE.  IT IS 25
 HU1472'FEET SOUTHEAST OF THE CENTER OF THE PAVED ROAD, 4.2 FEET
 HU1472'SOUTHWEST OF A METAL WITNESS POST AND 2 FEET NORTHWEST OF A
 HU1472'FENCE.  THE MARK SERVES AS AN AZIMUTH MARK.
 HU1472'
 HU1472'TO REACH THE STATION FROM THE JUNCTION OF STATE ROADS 14 AND
 HU1472'54 IN FENWICK ISLAND, GO WEST-NORTHWEST AND SOUTHWEST ON STATE
 HU1472'ROAD 54 FOR 4.15 MILES TO A SIDE ROAD LEFT AND THE SOUND
 HU1472'METHODIST CHURCH ON THE LEFT.  TURN LEFT AND GO SOUTHEAST ON
 HU1472'A PAVED ROAD FOR 0.7 MILE TO A T-ROAD AND A STOP SIGN.  TURN
 HU1472'LEFT AND GO SOUTHEASTERLY ON A PAVED ROAD FOR 0.45 MILE TO A
 HU1472'SIDE ROAD RIGHT.  TURN RIGHT AND GO SOUTHWESTERLY ON A PAVED
 HU1472'ROAD FOR 0.3 MILE TO THE STATION ON THE LEFT.  CONTINUE
 HU1472'SOUTHWESTERLY ON THE PAVED ROAD FOR 0.25 MILE TO REFERENCE
 HU1472'MARK 3 ON THE LEFT.
 HU1472
 HU1472                          STATION RECOVERY (2008)
 HU1472
 HU1472'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 HU1472'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6229 ***********************************************************************
 DN6229  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6229  DESIGNATION -  GREYSTONE
 DN6229  PID         -  DN6229
 DN6229  STATE/COUNTY-  MD/CECIL
 DN6229  COUNTRY     -  US
 DN6229  USGS QUAD   -  BAY VIEW (2016)
 DN6229
 DN6229                         *CURRENT SURVEY CONTROL
 DN6229  ______________________________________________________________________
 DN6229* NAD 83(2011) POSITION- 39 39 54.45509(N) 075 56 47.81334(W)   ADJUSTED
 DN6229* NAD 83(2011) ELLIP HT-    75.414 (meters)        (06/27/12)   ADJUSTED
 DN6229* NAD 83(2011) EPOCH   -  2010.00
 DN6229* NAVD 88 ORTHO HEIGHT -   108.46  (meters)      355.8   (feet) GPS OBS
 DN6229  ______________________________________________________________________
 DN6229  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6229  GEOID HEIGHT    -        -33.028 (meters)                     GEOID03
 DN6229  GEOID HEIGHT    -        -33.050 (meters)                     GEOID18
 DN6229  NAD 83(2011) X  -  1,193,873.276 (meters)                     COMP
 DN6229  NAD 83(2011) Y  - -4,769,428.265 (meters)                     COMP
 DN6229  NAD 83(2011) Z  -  4,049,481.356 (meters)                     COMP
 DN6229  LAPLACE CORR    -         -0.80  (seconds)                    DEFLEC18
 DN6229
 DN6229  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6229  Standards:
 DN6229         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6229            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6229  -------------------------------------------------------------------
 DN6229  NETWORK    0.45   0.86           0.21   0.15   0.44     -0.16964243
 DN6229  -------------------------------------------------------------------
 DN6229  Click here for local accuracies and other accuracy information.
 DN6229
 DN6229.The horizontal coordinates were established by GPS observations
 DN6229.and adjusted by the National Geodetic Survey in June 2012.
 DN6229
 DN6229.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6229.been affixed to the stable North American tectonic plate. See 
 DN6229.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6229
 DN6229.The horizontal coordinates are valid at the epoch date displayed above
 DN6229.which is a decimal equivalence of Year/Month/Day.
 DN6229
 DN6229.The orthometric height was determined by GPS observations and a
 DN6229.high-resolution geoid model using precise GPS observation and
 DN6229.processing techniques.
 DN6229
 DN6229.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6229.GEOID18 height accuracy estimate available here.
 DN6229
 DN6229.Click photographs - Photos may exist for this station.
 DN6229
 DN6229.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6229
 DN6229.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6229
 DN6229.The ellipsoidal height was determined by GPS observations
 DN6229.and is referenced to NAD 83.
 DN6229
 DN6229. The following values were computed from the NAD 83(2011) position.
 DN6229
 DN6229;                    North         East     Units Scale Factor Converg.
 DN6229;SPC MD       -   222,370.348   490,392.526   MT  1.00004472   +0 39 40.1
 DN6229;SPC MD       -   729,560.05  1,608,896.15   sFT  1.00004472   +0 39 40.1
 DN6229;UTM  18      - 4,391,018.762   418,803.224   MT  0.99968117   -0 36 15.3
 DN6229
 DN6229!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6229!SPC MD       -   0.99998817  x   1.00004472  =   1.00003289
 DN6229!UTM  18      -   0.99998817  x   0.99968117  =   0.99966934
 DN6229
 DN6229_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1880391018(NAD 83)
 DN6229
 DN6229                          SUPERSEDED SURVEY CONTROL
 DN6229
 DN6229  NAD 83(2007)-  39 39 54.45538(N)    075 56 47.81408(W) AD(2002.00) 1
 DN6229  ELLIP H (02/23/12)   75.436  (m)                       GP(2002.00) 4 1
 DN6229
 DN6229.Superseded values are not recommended for survey control.
 DN6229
 DN6229.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6229.See file dsdata.pdf to determine how the superseded data were derived.
 DN6229
 DN6229_MARKER: DD = SURVEY DISK
 DN6229_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6229_STAMPING: GREYSTONE 2008
 DN6229_MARK LOGO: MD-015
 DN6229_PROJECTION: FLUSH
 DN6229_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6229_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6229+STABILITY: SURFACE MOTION
 DN6229_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6229+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6229
 DN6229  HISTORY     - Date     Condition        Report By
 DN6229  HISTORY     - 20081204 MONUMENTED       GWS
 DN6229  HISTORY     - 20251016 GOOD             PROFLN
 DN6229
 DN6229                          STATION DESCRIPTION
 DN6229
 DN6229'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6229'THE STATION IS LOCATED ABOUT 3.1 MI (5.0 KM) SOUTHEAST OF CALVERT, 2.4
 DN6229'MI (3.9 KM) WEST OF PLEASANT HILL AND 1.7 MI (2.7 KM) NORTH-NORTHEAST
 DN6229'OF BAY VIEW.
 DN6229'
 DN6229'TO REACH FROM THE JUNCTION OF MD 274 AND MD 272, GO NORTH ON MD 272
 DN6229'FOR 1.62 MI (2.6 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO
 DN6229'EAST ON WHEATLEY ROAD FOR 0.58 MI (0.9 KM) TO A SIDE ROAD ON THE LEFT.
 DN6229'TURN LEFT AND GO NORTHWEST ON FRANK CRANE DRIVE FOR 0.13 MI (0.2 KM)
 DN6229'TO THE STATION ON THE RIGHT.
 DN6229'
 DN6229'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6229'CONCRETE MONUMENT, 22 FT (6.7 M) SOUTH OF AN ELECTRICAL BOX, 32 FT
 DN6229'(9.8 M) NORTHEAST OF THE NORTHEAST EDGE OF PAVING OF FRANK CRANE DRIVE
 DN6229'AND 86.4 FT (26.3 M) NORTHEAST OF A TRANSFORMER ON THE OPPOSITE SIDE
 DN6229'OF THE ROAD.
 DN6229
 DN6229                          STATION RECOVERY (2025)
 DN6229
 DN6229'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6229'THE MARK IS ACROSS THE ROAD OPPOSITE HOUSE 113 WITH GREY SIDING - TWO
 DN6229'UPSTAIRS WINDOWS AND DOUBLE GARAGE ON THE LEFT - 60.5 FT (18.4 M)
 DN6229'SOUTHEAST OF THE SE (GARAGE) SIDE EXTENDED OF HOUSE 116 - TWO STORY
 DN6229'HOUSE WITH STONE FACING - 21.5 FT (6.6 M) SOUTHWEST TOWARD THE DRIVE
 DN6229'FROM ELECTRIC BOX 99-50 AND 3.5 FT (1.1 M) NORTHEAST OF THE NORTHEAST
 DN6229'EDGE OF PAVING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6335 ***********************************************************************
 JV6335  DESIGNATION -  GRIER
 JV6335  PID         -  JV6335
 JV6335  STATE/COUNTY-  MD/HARFORD
 JV6335  COUNTRY     -  US
 JV6335  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6335
 JV6335                         *CURRENT SURVEY CONTROL
 JV6335  ______________________________________________________________________
 JV6335* NAD 83(2011) POSITION- 39 35 51.38395(N) 076 23 28.73378(W)   ADJUSTED
 JV6335* NAD 83(2011) ELLIP HT-   130.136 (meters)        (06/27/12)   ADJUSTED
 JV6335* NAD 83(2011) EPOCH   -  2010.00
 JV6335* NAVD 88 ORTHO HEIGHT -   162.796 (meters)      534.11  (feet) ADJUSTED
 JV6335  ______________________________________________________________________
 JV6335  GEOID HEIGHT    -        -32.655 (meters)                     GEOID18
 JV6335  NAD 83(2011) X  -  1,157,954.865 (meters)                     COMP
 JV6335  NAD 83(2011) Y  - -4,783,239.180 (meters)                     COMP
 JV6335  NAD 83(2011) Z  -  4,043,742.590 (meters)                     COMP
 JV6335  LAPLACE CORR    -         -2.43  (seconds)                    DEFLEC18
 JV6335  DYNAMIC HEIGHT  -        162.712 (meters)      533.83  (feet) COMP
 JV6335  MODELED GRAVITY -    980,110.7   (mgal)                       NAVD 88
 JV6335
 JV6335  VERT ORDER      -  FIRST     CLASS II
 JV6335
 JV6335  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6335  Standards:
 JV6335         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6335            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6335  -------------------------------------------------------------------
 JV6335  NETWORK    1.53   4.74           0.63   0.59   2.42      0.40607279
 JV6335  -------------------------------------------------------------------
 JV6335  Click here for local accuracies and other accuracy information.
 JV6335
 JV6335.The horizontal coordinates were established by GPS observations
 JV6335.and adjusted by the National Geodetic Survey in June 2012.
 JV6335
 JV6335.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6335.been affixed to the stable North American tectonic plate. See 
 JV6335.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6335
 JV6335.The horizontal coordinates are valid at the epoch date displayed above
 JV6335.which is a decimal equivalence of Year/Month/Day.
 JV6335
 JV6335.The orthometric height was determined by differential leveling and
 JV6335.adjusted by the NATIONAL GEODETIC SURVEY
 JV6335.in June 1991.
 JV6335
 JV6335.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6335.GEOID18 height accuracy estimate available here.
 JV6335
 JV6335.Click photographs - Photos may exist for this station.
 JV6335
 JV6335.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6335
 JV6335.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6335
 JV6335.The ellipsoidal height was determined by GPS observations
 JV6335.and is referenced to NAD 83.
 JV6335
 JV6335.The dynamic height is computed by dividing the NAVD 88
 JV6335.geopotential number by the normal gravity value computed on the
 JV6335.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6335.degrees latitude (g = 980.6199 gals.).
 JV6335
 JV6335.The modeled gravity was interpolated from observed gravity values.
 JV6335
 JV6335. The following values were computed from the NAD 83(2011) position.
 JV6335
 JV6335;                    North         East     Units Scale Factor Converg.
 JV6335;SPC MD       -   214,526.293   452,282.915   MT  1.00002916   +0 22 55.3
 JV6335;SPC MD       -   703,825.01  1,483,864.86   sFT  1.00002916   +0 22 55.3
 JV6335;UTM  18      - 4,384,021.625   380,541.377   MT  0.99977569   -0 53 12.9
 JV6335
 JV6335!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6335!SPC MD       -   0.99997958  x   1.00002916  =   1.00000874
 JV6335!UTM  18      -   0.99997958  x   0.99977569  =   0.99975528
 JV6335
 JV6335_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8054184021(NAD 83)
 JV6335
 JV6335|---------------------------------------------------------------------|
 JV6335| PID    Reference Object                     Distance      Geod. Az  |
 JV6335|                                                           dddmmss.s |
 JV6335| JV6336 GRIER AZ MK                         290.495 METERS 03047     |
 JV6335|---------------------------------------------------------------------|
 JV6335
 JV6335                          SUPERSEDED SURVEY CONTROL
 JV6335
 JV6335  NAD 83(2007)-  39 35 51.38414(N)    076 23 28.73452(W) AD(2002.00) 0
 JV6335  ELLIP H (02/10/07)  130.155  (m)                       GP(2002.00)    
 JV6335  ELLIP H (09/18/02)  130.171  (m)                       GP(       ) 4 2
 JV6335  NAD 83(1991)-  39 35 51.38414(N)    076 23 28.73361(W) AD(       ) 1
 JV6335  ELLIP H (01/27/92)  130.155  (m)                       GP(       ) 4 1
 JV6335  NAD 83(1986)-  39 35 51.37729(N)    076 23 28.74041(W) AD(       ) 1
 JV6335  NGVD 29             163.04   (m)          534.9    (f) LEVELING    3  
 JV6335
 JV6335.Superseded values are not recommended for survey control.
 JV6335
 JV6335.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6335.See file dsdata.pdf to determine how the superseded data were derived.
 JV6335
 JV6335_MARKER: DD = SURVEY DISK
 JV6335_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6335_STAMPING: GRIER 71 1989
 JV6335_MARK LOGO: MD-025
 JV6335_PROJECTION: FLUSH
 JV6335_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6335_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6335+STABILITY: SURFACE MOTION
 JV6335_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6335+SATELLITE: SATELLITE OBSERVATIONS - November 04, 2021
 JV6335
 JV6335  HISTORY     - Date     Condition        Report By
 JV6335  HISTORY     - 1989     MONUMENTED       RDA
 JV6335  HISTORY     - 20040511 GOOD             DMW
 JV6335  HISTORY     - 20090615 GOOD             MDSHA
 JV6335  HISTORY     - 20120926 GOOD             GPSSS
 JV6335  HISTORY     - 20211104 GOOD             MDSHA
 JV6335
 JV6335                          STATION DESCRIPTION
 JV6335
 JV6335'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6335'THE STATION IS LOCATED IN CENTRAL HARFORD COUNTY, MARYLAND ABOUT 4
 JV6335'MILES NORTHWEST OF BEL AIR.  TO REACH THE STATION FROM THE
 JV6335'INTERSECTION OF STATE HIGHWAY 24 AND STATE HIGHWAY 23 PROCEED NORTH
 JV6335'ALONG HIGHWAY 24 1.5 MILES TO ITS INTERSECTION WITH GRIER NURSERY
 JV6335'ROAD AND THE STATION ON THE LEFT.  THE STATION IS A STANDARD HARFORD
 JV6335'COUNTY STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED
 JV6335'71 GRIER 1989.  THE STATION IS 16.9 FEET NORTHWEST OF THE CENTERLINE
 JV6335'OF HIGHWAY 24, 3.4 FEET NORTHEAST OF G AND E POWER POLE NUMBER
 JV6335'723213, AND 27.8 FEET SOUTHWEST OF THE CENTERLINE OF DRIVEWAY POST
 JV6335'BOX NUMBER 2630.
 JV6335
 JV6335                          STATION RECOVERY (2004)
 JV6335
 JV6335'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2004
 JV6335'RECOVERED AS DESCRIBED
 JV6335
 JV6335                          STATION RECOVERY (2009)
 JV6335
 JV6335'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV6335'RECOVERED IN GOOD CONDITION.
 JV6335
 JV6335                          STATION RECOVERY (2012)
 JV6335
 JV6335'RECOVERY NOTE BY GPS SALES AND SERVICES 2012 (MB)
 JV6335'RECOVERED BY MIKE BUTLER AND DEWEY LILY OF NORTHERN BAY SURVEYS.
 JV6335
 JV6335                          STATION RECOVERY (2021)
 JV6335
 JV6335'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV6335'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6336 ***********************************************************************
 JV6336  DESIGNATION -  GRIER AZ MK
 JV6336  PID         -  JV6336
 JV6336  STATE/COUNTY-  MD/HARFORD
 JV6336  COUNTRY     -  US
 JV6336  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6336
 JV6336                         *CURRENT SURVEY CONTROL
 JV6336  ______________________________________________________________________
 JV6336* NAD 83(2011) POSITION- 39 35 59.47646(N) 076 23 22.50332(W)   ADJUSTED
 JV6336* NAD 83(2011) ELLIP HT-   120.096 (meters)        (06/27/12)   ADJUSTED
 JV6336* NAD 83(2011) EPOCH   -  2010.00
 JV6336* NAVD 88 ORTHO HEIGHT -   152.779 (meters)      501.24  (feet) ADJUSTED
 JV6336  ______________________________________________________________________
 JV6336  GEOID HEIGHT    -        -32.658 (meters)                     GEOID18
 JV6336  NAD 83(2011) X  -  1,158,060.091 (meters)                     COMP
 JV6336  NAD 83(2011) Y  - -4,783,042.062 (meters)                     COMP
 JV6336  NAD 83(2011) Z  -  4,043,928.502 (meters)                     COMP
 JV6336  LAPLACE CORR    -         -2.44  (seconds)                    DEFLEC18
 JV6336  DYNAMIC HEIGHT  -        152.701 (meters)      500.99  (feet) COMP
 JV6336  MODELED GRAVITY -    980,111.3   (mgal)                       NAVD 88
 JV6336
 JV6336  VERT ORDER      -  FIRST     CLASS II
 JV6336
 JV6336  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6336  Standards:
 JV6336         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6336            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6336  -------------------------------------------------------------------
 JV6336  NETWORK    1.82   5.14           0.66   0.81   2.62      0.17089660
 JV6336  -------------------------------------------------------------------
 JV6336  Click here for local accuracies and other accuracy information.
 JV6336
 JV6336.The horizontal coordinates were established by GPS observations
 JV6336.and adjusted by the National Geodetic Survey in June 2012.
 JV6336
 JV6336.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6336.been affixed to the stable North American tectonic plate. See 
 JV6336.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6336
 JV6336.The horizontal coordinates are valid at the epoch date displayed above
 JV6336.which is a decimal equivalence of Year/Month/Day.
 JV6336
 JV6336.The orthometric height was determined by differential leveling and
 JV6336.adjusted by the NATIONAL GEODETIC SURVEY
 JV6336.in June 1991.
 JV6336
 JV6336.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6336.GEOID18 height accuracy estimate available here.
 JV6336
 JV6336.Click photographs - Photos may exist for this station.
 JV6336
 JV6336.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6336
 JV6336.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6336
 JV6336.The ellipsoidal height was determined by GPS observations
 JV6336.and is referenced to NAD 83.
 JV6336
 JV6336.The dynamic height is computed by dividing the NAVD 88
 JV6336.geopotential number by the normal gravity value computed on the
 JV6336.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6336.degrees latitude (g = 980.6199 gals.).
 JV6336
 JV6336.The modeled gravity was interpolated from observed gravity values.
 JV6336
 JV6336. The following values were computed from the NAD 83(2011) position.
 JV6336
 JV6336;                    North         East     Units Scale Factor Converg.
 JV6336;SPC MD       -   214,776.867   452,429.901   MT  1.00002965   +0 22 59.2
 JV6336;SPC MD       -   704,647.10  1,484,347.10   sFT  1.00002965   +0 22 59.2
 JV6336;UTM  18      - 4,384,268.820   380,693.837   MT  0.99977524   -0 53 09.1
 JV6336
 JV6336!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6336!SPC MD       -   0.99998116  x   1.00002965  =   1.00001081
 JV6336!UTM  18      -   0.99998116  x   0.99977524  =   0.99975640
 JV6336
 JV6336_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8069384268(NAD 83)
 JV6336
 JV6336|---------------------------------------------------------------------|
 JV6336| PID    Reference Object                     Distance      Geod. Az  |
 JV6336|                                                           dddmmss.s |
 JV6336| JV6335 GRIER                               290.495 METERS 21047     |
 JV6336|---------------------------------------------------------------------|
 JV6336
 JV6336                          SUPERSEDED SURVEY CONTROL
 JV6336
 JV6336  NAD 83(2007)-  39 35 59.47661(N)    076 23 22.50391(W) AD(2002.00) 0
 JV6336  ELLIP H (02/10/07)  120.112  (m)                       GP(2002.00)    
 JV6336  ELLIP H (09/18/02)  120.127  (m)                       GP(       ) 4 2
 JV6336  NAD 83(1991)-  39 35 59.47661(N)    076 23 22.50297(W) AD(       ) 1
 JV6336  ELLIP H (01/27/92)  120.112  (m)                       GP(       ) 4 1
 JV6336  NAD 83(1986)-  39 35 59.46975(N)    076 23 22.50976(W) AD(       ) 1
 JV6336  NGVD 29             153.03   (m)          502.1    (f) LEVELING    3  
 JV6336
 JV6336.Superseded values are not recommended for survey control.
 JV6336
 JV6336.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6336.See file dsdata.pdf to determine how the superseded data were derived.
 JV6336
 JV6336_MARKER: DZ = AZIMUTH MARK DISK
 JV6336_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6336_STAMPING: 71 GRIER 1989
 JV6336_MARK LOGO: MD-025
 JV6336_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6336_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6336+STABILITY: SURFACE MOTION
 JV6336_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6336+SATELLITE: SATELLITE OBSERVATIONS - January 02, 1990
 JV6336
 JV6336  HISTORY     - Date     Condition        Report By
 JV6336  HISTORY     - 1989     MONUMENTED       RDA
 JV6336  HISTORY     - 19900102 GOOD
 JV6336
 JV6336                          STATION DESCRIPTION
 JV6336
 JV6336'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6336'THE STATION IS LOCATED IN CENTRAL HARFORD COUNTY, MARYLAND ABOUT 4
 JV6336'MILES NORTHWEST OF BEL AIR.  TO REACH THE STATION FROM THE
 JV6336'INTERSECTION OF STATE HIGHWAY 24 AND STATE HIGHWAY 23 PROCEED NORTH
 JV6336'ALONG HIGHWAY 24 1.5 MILES TO ITS INTERSECTION WITH GRIER NURSERY
 JV6336'ROAD AND THE STATION ON THE LEFT.  TO REACH THE AZIMUTH MARK FROM THE
 JV6336'STATION PROCEED EAST ALONG GRIER NURSERY ROAD 0.18 MILE TO THE MARK
 JV6336'ON THE RIGHT.  THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET
 JV6336'IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 71 GRIER 1989.  THE
 JV6336'MARK IS 6.8 FEET SOUTHWEST OF MAIL BOX POST BOX 2717, 32.1 FEET
 JV6336'NORTHEAST OF C AND P OF MARYLAND POLE NUMBER 5, 22.0 FEET SOUTHEAST
 JV6336'OF THE CENTERLINE OF GRIER NURSERY ROAD, AND 953.08 FEET FROM THE
 JV6336'STATION.
 JV6336
 JV6336                          STATION RECOVERY (1990)
 JV6336
 JV6336'RECOVERED 1990
 JV6336'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6586 ***********************************************************************
 HV6586  DESIGNATION -  GRIND
 HV6586  PID         -  HV6586
 HV6586  STATE/COUNTY-  MD/ST MARYS
 HV6586  COUNTRY     -  US
 HV6586  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6586
 HV6586                         *CURRENT SURVEY CONTROL
 HV6586  ______________________________________________________________________
 HV6586* NAD 83(1993) POSITION- 38 09 32.48418(N) 076 26 56.68013(W)   ADJUSTED
 HV6586* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6586  ______________________________________________________________________
 HV6586  GEOID HEIGHT    -        -34.751 (meters)                     GEOID18
 HV6586  LAPLACE CORR    -         -6.10  (seconds)                    DEFLEC18
 HV6586  HORZ ORDER      -  THIRD
 HV6586
 HV6586.The horizontal coordinates were established by classical geodetic methods
 HV6586.and adjusted by the National Geodetic Survey in November 1994.
 HV6586
 HV6586.The orthometric height was scaled from a topographic map.
 HV6586
 HV6586.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6586.GEOID18 height accuracy estimate available here.
 HV6586
 HV6586.Click photographs - Photos may exist for this station.
 HV6586
 HV6586.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6586
 HV6586. The following values were computed from the NAD 83(1993) position.
 HV6586
 HV6586;                    North         East     Units Scale Factor Converg.
 HV6586;SPC MD       -    54,799.827   448,285.209   MT  1.00002752   +0 20 44.8
 HV6586;SPC MD       -   179,789.10  1,470,749.06   sFT  1.00002752   +0 20 44.8
 HV6586;SPC VA N     - 2,056,658.204 3,679,729.346   MT  0.99998020   +1 16 48.1
 HV6586;SPC VA N     - 6,747,552.79 12,072,578.70   sFT  0.99998020   +1 16 48.1
 HV6586;SPC VA S     - 1,204,569.691 3,679,741.045   MT  1.00004077   +1 14 41.1
 HV6586;SPC VA S     - 3,951,992.39 12,072,617.08   sFT  1.00004077   +1 14 41.1
 HV6586;UTM  18      - 4,224,451.242   373,046.827   MT  0.99979850   -0 53 43.5
 HV6586
 HV6586!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6586!SPC MD       -   1.00000550  x   1.00002752  =   1.00003302
 HV6586!SPC VA N     -   1.00000550  x   0.99998020  =   0.99998570
 HV6586!SPC VA S     -   1.00000550  x   1.00004077  =   1.00004627
 HV6586!UTM  18      -   1.00000550  x   0.99979850  =   0.99980400
 HV6586
 HV6586:                Primary Azimuth Mark                     Grid Az
 HV6586:SPC MD       -  ROD PRIESTS HOUSE 1908                   141 51 41.2
 HV6586:SPC VA N     -  ROD PRIESTS HOUSE 1908                   140 55 37.9
 HV6586:SPC VA S     -  ROD PRIESTS HOUSE 1908                   140 57 44.9
 HV6586:UTM  18      -  ROD PRIESTS HOUSE 1908                   143 06 09.5
 HV6586
 HV6586_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7304624451(NAD 83)
 HV6586
 HV6586|---------------------------------------------------------------------|
 HV6586| PID    Reference Object                     Distance      Geod. Az  |
 HV6586|                                                           dddmmss.s |
 HV6586| HV6574 ROD PRIESTS HOUSE 1908              APPROX. 1.2 KM 1421226.0 |
 HV6586| CX2826 GRIND RM                             81.360 METERS 26139     |
 HV6586|---------------------------------------------------------------------|
 HV6586
 HV6586                          SUPERSEDED SURVEY CONTROL
 HV6586
 HV6586  NAD 83(1991)-  38 09 32.48322(N)    076 26 56.68323(W) AD(       ) 3
 HV6586  NAD 83(1986)-  38 09 32.48413(N)    076 26 56.69655(W) AD(       ) 3
 HV6586  NAD 27      -  38 09 32.09100(N)    076 26 57.92200(W) AD(       ) 3
 HV6586  USSD        -  38 09 32.47400(N)    076 26 57.63200(W) AD(       ) 3
 HV6586
 HV6586.Superseded values are not recommended for survey control.
 HV6586
 HV6586.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6586.See file dsdata.pdf to determine how the superseded data were derived.
 HV6586
 HV6586_MARKER: N = NAIL
 HV6586_SETTING: 0 = UNSPECIFIED SETTING
 HV6586
 HV6586  HISTORY     - Date     Condition        Report By
 HV6586  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6586  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6586  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6586
 HV6586                          STATION DESCRIPTION
 HV6586
 HV6586'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6586'STATION IS ON THE WESTERN SIDE OF ST. MARYS RIVER, IN WATER JUST
 HV6586'OFF WINDMILL POINT, AND OPPOSITE ENTRANCE TO ST. INIGOES
 HV6586'CREEK.  STATION IS IN ABOUT 4 FEET OF WATER, 45 YARDS ESE OF
 HV6586'EXTREME END OF POINT, AND 120 YARDS NE OF ANOTHER POINT.
 HV6586'
 HV6586'STATION MARK IS NAIL IN STUB IN WATER.
 HV6586'
 HV6586'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6586'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6586'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6586'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS
 HV6586'81.36 METERS (266.9 FEET) FROM STATION S 81 DEG 40
 HV6586'MIN W.  DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE
 HV6586'ARE AS FOLLOWS--LEFT PEAK OF ROOF BETWEEN TWO CHIMNEYS ON BRICK
 HV6586'HOUSE, 1-1/2 MILES, S 49 DEG 21 MIN W.  LEFT CORNER OF LEFT
 HV6586'CHIMNEY ON HOUSE AT PORTOBELLO, 1-1/2 MILES, N 09 DEG 21 MIN W.
 HV6586'NEAR PEAK OF ROOF ON BROMES WHARF HOUSE, 2 MILES, N 21 DEG 23
 HV6586'MIN E.  RIGHT PIAZZA POST ON KENNEDYS HOUSE, 3/4 MILE, N 78 DEG
 HV6586'47 MIN E.  LEFT PEAK OF ROOF OF RALEYS HOUSE, 7/8 MILE, S 62 DEG
 HV6586'58 MIN E.
 HV6586
 HV6586                          STATION RECOVERY (1942)
 HV6586
 HV6586'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6586'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED
 HV6586'FOR.  DUE TO THE STATIONS NATURE AND ITS AGE, IT IS RECOMMENDED
 HV6586'THAT THE STATION BE CLASSIFIED AS DESTROYED.  AFTER A CAREFUL
 HV6586'SEARCH THE REFERENCE MARK WAS NOT FOUND.
 HV6586
 HV6586                          STATION RECOVERY (1958)
 HV6586
 HV6586'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6586'A THOROUGH SEARCH WAS MADE FOR THIS STATION AND ITS REFERENCE MARK
 HV6586'WITHOUT RESULTS.  THE CENTER MARK, A WOODEN STUB PLACED 45 YARDS
 HV6586'OFFSHORE IN 4 FEET OF WATER, WAS DESTROYED.  THE REFERENCE MARK,
 HV6586'A M.S.F.C. MONUMENT WAS LOCATED ON A NARROW POINT WHICH HAS BEEN
 HV6586'ERODING.  THIS MARK SHOULD BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4274 ***********************************************************************
 JV4274  DESIGNATION -  GROS 2
 JV4274  PID         -  JV4274
 JV4274  STATE/COUNTY-  MD/MONTGOMERY
 JV4274  COUNTRY     -  US
 JV4274  USGS QUAD   -  KENSINGTON (2016)
 JV4274
 JV4274                         *CURRENT SURVEY CONTROL
 JV4274  ______________________________________________________________________
 JV4274* NAD 83(1993) POSITION- 39 01 12.94543(N) 077 06 21.99805(W)   ADJUSTED
 JV4274* NAVD 88 ORTHO HEIGHT -    93.    (meters)      305.    (feet) SCALED
 JV4274  ______________________________________________________________________
 JV4274  GEOID HEIGHT    -        -31.830 (meters)                     GEOID18
 JV4274  LAPLACE CORR    -         -3.42  (seconds)                    DEFLEC18
 JV4274  HORZ ORDER      -  SECOND
 JV4274
 JV4274.The horizontal coordinates were established by classical geodetic methods
 JV4274.and adjusted by the National Geodetic Survey in November 1994.
 JV4274
 JV4274.The orthometric height was scaled from a topographic map.
 JV4274
 JV4274.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4274.GEOID18 height accuracy estimate available here.
 JV4274
 JV4274.Click photographs - Photos may exist for this station.
 JV4274
 JV4274.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4274
 JV4274. The following values were computed from the NAD 83(1993) position.
 JV4274
 JV4274;                    North         East     Units Scale Factor Converg.
 JV4274;SPC MD       -   150,260.910   390,811.079   MT  0.99995302   -0 03 59.8
 JV4274;SPC MD       -   492,981.00  1,282,186.02   sFT  0.99995302   -0 03 59.8
 JV4274;UTM  18      - 4,321,135.495   317,671.618   MT  1.00000936   -1 19 34.9
 JV4274
 JV4274!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4274!SPC MD       -   0.99999044  x   0.99995302  =   0.99994346
 JV4274!UTM  18      -   0.99999044  x   1.00000936  =   0.99999980
 JV4274
 JV4274:                Primary Azimuth Mark                     Grid Az
 JV4274:SPC MD       -  POOKS 1958                               123 27 24.9
 JV4274:UTM  18      -  POOKS 1958                               124 43 00.0
 JV4274
 JV4274_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1767121135(NAD 83)
 JV4274
 JV4274|---------------------------------------------------------------------|
 JV4274| PID    Reference Object                     Distance      Geod. Az  |
 JV4274|                                                           dddmmss.s |
 JV4274| JV2728 GROS RM 1                                          01107     |
 JV4274| JV4287 FOREST GLEN RAD STA WWDC FM TR      APPROX. 4.9 KM 1162358.2 |
 JV4274| JV4268 POOKS 1958                          APPROX. 1.2 KM 1232325.1 |
 JV4274| JV2730 GROS RM 2                                          25540     |
 JV4274|---------------------------------------------------------------------|
 JV4274
 JV4274                          SUPERSEDED SURVEY CONTROL
 JV4274
 JV4274  NAD 83(1991)-  39 01 12.94506(N)    077 06 21.99899(W) AD(       ) 2
 JV4274  NAD 83(1986)-  39 01 12.94483(N)    077 06 22.00889(W) AD(       ) 2
 JV4274  NAD 27      -  39 01 12.55100(N)    077 06 23.08063(W) AD(       ) 2
 JV4274
 JV4274.Superseded values are not recommended for survey control.
 JV4274
 JV4274.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4274.See file dsdata.pdf to determine how the superseded data were derived.
 JV4274
 JV4274_MARKER: DS = TRIANGULATION STATION DISK
 JV4274_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4274_STAMPING: GROS 2 1958
 JV4274_MARK LOGO: CGS
 JV4274_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4274+STABILITY: SURFACE MOTION
 JV4274
 JV4274  HISTORY     - Date     Condition        Report By
 JV4274  HISTORY     - 1958     MONUMENTED       CGS
 JV4274  HISTORY     - 1963     GOOD             MDDT
 JV4274  HISTORY     - 1970     GOOD             MDDT
 JV4274
 JV4274                          STATION DESCRIPTION
 JV4274
 JV4274'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4274'STATION AND ALL MARKS WERE RECOVERED AS DESCRIBED AND FOUND IN
 JV4274'GOOD CONDITION.  THE STATION HAS BEEN MOVED 32.1 FEET NORTH OF
 JV4274'ITS ORIGINAL POSITION.  A NEW DESCRIPTION FOLLOWS--
 JV4274'
 JV4274'STATION IS LOCATED ABOUT 5 MILES SOUTH SOUTHEAST OF ROCKVILLE
 JV4274'AND 2-1/4 MILES NORTH OF BETHESDA ON A HIGH WOODED HILL.  IT IS
 JV4274'55 FEET NORTH OF A TRIANGLE BLAZED TREE, 57 FEET NORTHWEST OF A
 JV4274'CUT BANK, AND 102 FEET SOUTH OF A CUT BANK.  THE MARK IS FLUSH
 JV4274'AND THE DISK IS STAMPED GROS 2 1958.
 JV4274'
 JV4274'REFERENCE MARK NO. 1 IS 81.7 FEET NORTH NORTHEAST OF THE
 JV4274'STATION, ABOUT 20 FEET SOUTH OF A CUT BANK, AND 8 FEET EAST OF A
 JV4274'LARGE TREE.  THE MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS
 JV4274'STAMPED GROS NO. 1 1958.  THE ARROW IN THE DISK IS POINTING IN
 JV4274'THE DIRECTION OF THE OLD STATION.
 JV4274'
 JV4274'REFERENCE MARK NO. 2 IS 64.1 FEET WEST OF THE STATION, 57 FEET
 JV4274'NORTH OF A CUT BANK, AND 8 FEET SOUTHWEST OF A LARGE TREE.  THE
 JV4274'MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED GROS NO.2
 JV4274'1958.
 JV4274'
 JV4274'TRAVERSE STATION POOKS WAS USED AS THE AZIMUTH MARK.  THE MARK
 JV4274'WAS PREVIOUSLY DESCRIBED AS DESTROYED.  THE MARK WAS NOT DESTROYED
 JV4274'AND IT IS IN GOOD CONDITION.  IT IS 17 FEET NORTHEAST OF THE
 JV4274'CENTERLINE OF SOUTHEAST BOUND TRAFFIC LANE AND 1 FOOT SOUTHWEST OF
 JV4274'GUARD RAIL.  THE MARK IS FLUSH AND THE DISK IS STAMPED POOKS
 JV4274'1958.
 JV4274'
 JV4274'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 240,
 JV4274'WISCONSIN AVENUE, AND STATE HIGHWAY 547, ABOUT 4-1/2 MILES
 JV4274'SOUTHEAST OF ROCKVILLE, GO SOUTH ON U.S. HIGHWAY 240 FOR 0.9
 JV4274'MILE TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO WEST FOR 0.3 MILE
 JV4274'TO GATE JUST AFTER PASSING HOUSE ON LEFT.  PASS THROUGH GATE AND
 JV4274'TURN LEFT ON TRACK ROAD FOR 0.05 MILE TO AN OLD BARN.  CONTINUE
 JV4274'ON TRACK ROAD FOR 0.05 MILE TO TRACK ROAD RIGHT.  TURN RIGHT
 JV4274'AND GO 0.05 MILE TO EDGE OF BANK AND STATION AS DESCRIBED.
 JV4274'
 JV4274'TO REACH STATION POOKS FROM STATION, RETURN TO U.S. HIGHWAY
 JV4274'240.  TURN RIGHT AND GO SOUTH ON U.S. HIGHWAY 240 FOR 0.45 MILE
 JV4274'TO A FOUR LANE HIGHWAY LEFT.  TURN LEFT AND GO 0.35 MILE TO
 JV4274'STATION ON THE LEFT AS DESCRIBED.
 JV4274
 JV4274                          STATION RECOVERY (1963)
 JV4274
 JV4274'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 JV4274'STATION RECOVERED IN GOOD CONDITION.
 JV4274
 JV4274                          STATION RECOVERY (1970)
 JV4274
 JV4274'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1970
 JV4274'ALL MARKS RECOVERED AS DESCRIBED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2728 ***********************************************************************
 JV2728  DESIGNATION -  GROS RM 1
 JV2728  PID         -  JV2728
 JV2728  STATE/COUNTY-  MD/MONTGOMERY
 JV2728  COUNTRY     -  US
 JV2728  USGS QUAD   -  KENSINGTON (2016)
 JV2728
 JV2728                         *CURRENT SURVEY CONTROL
 JV2728  ______________________________________________________________________
 JV2728* NAD 83(1986) POSITION- 39 01 13.74   (N) 077 06 21.80   (W)   HD_HELD1
 JV2728* NAVD 88 ORTHO HEIGHT -    91.800 (meters)      301.18  (feet) ADJUSTED
 JV2728  ______________________________________________________________________
 JV2728  GEOID HEIGHT    -        -31.830 (meters)                     GEOID18
 JV2728  DYNAMIC HEIGHT  -         91.751 (meters)      301.02  (feet) COMP
 JV2728  MODELED GRAVITY -    980,093.0   (mgal)                       NAVD 88
 JV2728
 JV2728  VERT ORDER      -  SECOND    CLASS 0
 JV2728
 JV2728.The horizontal coordinates were determined by differentially corrected
 JV2728.hand held GPS observations or other comparable positioning techniques
 JV2728.and have an estimated accuracy of +/- 3 meters.
 JV2728
 JV2728.The orthometric height was determined by differential leveling and
 JV2728.adjusted by the NATIONAL GEODETIC SURVEY
 JV2728.in June 1991.
 JV2728
 JV2728.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2728.GEOID18 height accuracy estimate available here.
 JV2728
 JV2728.Click photographs - Photos may exist for this station.
 JV2728
 JV2728.The dynamic height is computed by dividing the NAVD 88
 JV2728.geopotential number by the normal gravity value computed on the
 JV2728.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2728.degrees latitude (g = 980.6199 gals.).
 JV2728
 JV2728.The modeled gravity was interpolated from observed gravity values.
 JV2728
 JV2728;                    North         East    Units  Estimated Accuracy
 JV2728;SPC MD       -   150,285.4     390,815.9     MT  (+/- 3 meters HH1 GPS) 
 JV2728
 JV2728_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1767621159(NAD 83)
 JV2728
 JV2728                          SUPERSEDED SURVEY CONTROL
 JV2728
 JV2728  NGVD 29 (11/26/84)   92.024  (m)          301.92   (f) ADJUSTED    2 0
 JV2728
 JV2728.Superseded values are not recommended for survey control.
 JV2728
 JV2728.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2728.See file dsdata.pdf to determine how the superseded data were derived.
 JV2728
 JV2728_MARKER: DR = REFERENCE MARK DISK
 JV2728_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2728_STAMPING: GROS NO 1 1958
 JV2728_MARK LOGO: CGS
 JV2728_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2728+STABILITY: SURFACE MOTION
 JV2728
 JV2728  HISTORY     - Date     Condition        Report By
 JV2728  HISTORY     - 1958     MONUMENTED       CGS
 JV2728
 JV2728                          STATION DESCRIPTION
 JV2728
 JV2728'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2728'1.8 MI NW FROM BETHESDA.
 JV2728'ABOUT 1.5 MILES NORTH ALONG WISONCSIN AVENUE (ROCKVILLE PIKE)
 JV2728'FROM THE NAVEL MEDICAL CENTER AT BETHESDA, THENCE 0.2 MILE WEST
 JV2728'ALONG GROSVENOR LANE, THENCE 0.1 MILE SOUTH CROSS-COUNTRY, 102
 JV2728'FEET NORTH OF THE STATION, SET IN THE TOP OF A CONCRETE POST
 JV2728'PROJECTING 3 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2730 ***********************************************************************
 JV2730  DESIGNATION -  GROS RM 2
 JV2730  PID         -  JV2730
 JV2730  STATE/COUNTY-  MD/MONTGOMERY
 JV2730  COUNTRY     -  US
 JV2730  USGS QUAD   -  KENSINGTON (2016)
 JV2730
 JV2730                         *CURRENT SURVEY CONTROL
 JV2730  ______________________________________________________________________
 JV2730* NAD 83(1986) POSITION- 39 01 12.79   (N) 077 06 22.79   (W)   HD_HELD1
 JV2730* NAVD 88 ORTHO HEIGHT -    92.029 (meters)      301.93  (feet) ADJUSTED
 JV2730  ______________________________________________________________________
 JV2730  GEOID HEIGHT    -        -31.829 (meters)                     GEOID18
 JV2730  DYNAMIC HEIGHT  -         91.980 (meters)      301.77  (feet) COMP
 JV2730  MODELED GRAVITY -    980,093.0   (mgal)                       NAVD 88
 JV2730
 JV2730  VERT ORDER      -  SECOND    CLASS 0
 JV2730
 JV2730.The horizontal coordinates were determined by differentially corrected
 JV2730.hand held GPS observations or other comparable positioning techniques
 JV2730.and have an estimated accuracy of +/- 3 meters.
 JV2730
 JV2730.The orthometric height was determined by differential leveling and
 JV2730.adjusted by the NATIONAL GEODETIC SURVEY
 JV2730.in June 1991.
 JV2730
 JV2730.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2730.GEOID18 height accuracy estimate available here.
 JV2730
 JV2730.Click photographs - Photos may exist for this station.
 JV2730
 JV2730.The dynamic height is computed by dividing the NAVD 88
 JV2730.geopotential number by the normal gravity value computed on the
 JV2730.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2730.degrees latitude (g = 980.6199 gals.).
 JV2730
 JV2730.The modeled gravity was interpolated from observed gravity values.
 JV2730
 JV2730;                    North         East    Units  Estimated Accuracy
 JV2730;SPC MD       -   150,256.1     390,792.0     MT  (+/- 3 meters HH1 GPS) 
 JV2730
 JV2730_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1765221131(NAD 83)
 JV2730
 JV2730                          SUPERSEDED SURVEY CONTROL
 JV2730
 JV2730  NGVD 29 (11/26/84)   92.252  (m)          302.66   (f) ADJUSTED    2 0
 JV2730
 JV2730.Superseded values are not recommended for survey control.
 JV2730
 JV2730.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2730.See file dsdata.pdf to determine how the superseded data were derived.
 JV2730
 JV2730_MARKER: DR = REFERENCE MARK DISK
 JV2730_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2730_STAMPING: GROS NO 2 1958
 JV2730_MARK LOGO: CGS
 JV2730_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2730+STABILITY: SURFACE MOTION
 JV2730
 JV2730  HISTORY     - Date     Condition        Report By
 JV2730  HISTORY     - 1958     MONUMENTED       CGS
 JV2730
 JV2730                          STATION DESCRIPTION
 JV2730
 JV2730'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2730'1.8 MI NW FROM BETHESDA.
 JV2730'ABOUT 1.5 MILES NORTH ALONG WISCONSIN AVENUE (ROCKVILLE PIKE)
 JV2730'FROM THE NAVAL MEDICAL CENTER AT BETHESDA, THENCE 0.2 MILE WEST
 JV2730'ALONG GROSVENOR LANE, THENCE 0.1 MILE SOUTH CROSS-COUNTRY, 93
 JV2730'FEET WEST OF THE STATION, SET IN THE TOP OF A CONCRETE POST
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6962 ***********************************************************************
 HV6962  DESIGNATION -  GROVE
 HV6962  PID         -  HV6962
 HV6962  STATE/COUNTY-  MD/ST MARYS
 HV6962  COUNTRY     -  US
 HV6962  USGS QUAD   -  SAINT CLEMENTS ISLAND (2016)
 HV6962
 HV6962                         *CURRENT SURVEY CONTROL
 HV6962  ______________________________________________________________________
 HV6962* NAD 83(1993) POSITION- 38 14 23.52107(N) 076 41 14.85832(W)   ADJUSTED
 HV6962* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6962  ______________________________________________________________________
 HV6962  GEOID HEIGHT    -        -33.831 (meters)                     GEOID18
 HV6962  LAPLACE CORR    -         -3.84  (seconds)                    DEFLEC18
 HV6962  HORZ ORDER      -  THIRD
 HV6962
 HV6962.The horizontal coordinates were established by classical geodetic methods
 HV6962.and adjusted by the National Geodetic Survey in November 1994.
 HV6962
 HV6962.The orthometric height was scaled from a topographic map.
 HV6962
 HV6962.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6962.GEOID18 height accuracy estimate available here.
 HV6962
 HV6962.Click photographs - Photos may exist for this station.
 HV6962
 HV6962.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6962
 HV6962. The following values were computed from the NAD 83(1993) position.
 HV6962
 HV6962;                    North         East     Units Scale Factor Converg.
 HV6962;SPC MD       -    63,674.794   427,361.694   MT  1.00001101   +0 11 46.2
 HV6962;SPC MD       -   208,906.39  1,402,102.49   sFT  1.00001101   +0 11 46.2
 HV6962;SPC VA N     - 2,065,190.306 3,658,664.775   MT  0.99996997   +1 07 52.5
 HV6962;SPC VA N     - 6,775,545.20 12,003,469.35   sFT  0.99996997   +1 07 52.5
 HV6962;UTM  18      - 4,233,775.534   352,324.290   MT  0.99986858   -1 02 40.7
 HV6962
 HV6962!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6962!SPC MD       -   1.00000503  x   1.00001101  =   1.00001604
 HV6962!SPC VA N     -   1.00000503  x   0.99996997  =   0.99997500
 HV6962!UTM  18      -   1.00000503  x   0.99986858  =   0.99987361
 HV6962
 HV6962:                Primary Azimuth Mark                     Grid Az
 HV6962:SPC MD       -  BLAKISTON ISLAND LH 1860                 234 12 23.9
 HV6962:SPC VA N     -  BLAKISTON ISLAND LH 1860                 233 16 17.6
 HV6962:UTM  18      -  BLAKISTON ISLAND LH 1860                 235 26 50.8
 HV6962
 HV6962_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5232433775(NAD 83)
 HV6962
 HV6962|---------------------------------------------------------------------|
 HV6962| PID    Reference Object                     Distance      Geod. Az  |
 HV6962|                                                           dddmmss.s |
 HV6962| CX2827 GROVE RM                             21.480 METERS 14528     |
 HV6962| HV6945 BLAKISTON ISLAND LH 1860            APPROX. 6.2 KM 2342410.1 |
 HV6962|---------------------------------------------------------------------|
 HV6962
 HV6962                          SUPERSEDED SURVEY CONTROL
 HV6962
 HV6962  NAD 83(1991)-  38 14 23.51981(N)    076 41 14.86308(W) AD(       ) 3
 HV6962  NAD 83(1986)-  38 14 23.52086(N)    076 41 14.87469(W) AD(       ) 3
 HV6962  NAD 27      -  38 14 23.04700(N)    076 41 15.99100(W) AD(       ) 3
 HV6962  USSD        -  38 14 23.63400(N)    076 41 15.91600(W) AD(       ) 3
 HV6962
 HV6962.Superseded values are not recommended for survey control.
 HV6962
 HV6962.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6962.See file dsdata.pdf to determine how the superseded data were derived.
 HV6962
 HV6962_MARKER: N = NAIL
 HV6962_SETTING: 0 = UNSPECIFIED SETTING
 HV6962
 HV6962  HISTORY     - Date     Condition        Report By
 HV6962  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6962  HISTORY     - 1927     MARK NOT FOUND   CGS
 HV6962  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6962  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6962
 HV6962                          STATION DESCRIPTION
 HV6962
 HV6962'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6962'ON THE EASTERN SHORE OF BRETONS BAY, ABOUT 1/2 MILE N OF HIGGINS
 HV6962'POINT, AND 7/8 MILE NE OF KAYWOOD POINT, ON SANDED GRASSY LAND, IN
 HV6962'A GROVE OF TREES, ABOUT 8 FEET ABOVE HIGH WATER, 3 YARDS E OF
 HV6962'EDGE OF BANK, 5 YARDS S OF EDGE OF BANK, 23 YARDS N BY E OF A
 HV6962'LARGE OAK TREE, AND 30 YARDS SSW OF A HIGH SAND PILE.  STATION
 HV6962'MARK IS NAIL IN STUB WITH TOP ABOUT FLUSH WITH GROUND. REFERENCE
 HV6962'MARK IS CENTER OF STANDARD MONUMENT OF MARYLAND SHELL FISH SURVEY
 HV6962'WHICH IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE
 HV6962'AT THE TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND
 HV6962'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK
 HV6962'LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE LETTERS
 HV6962'U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE CENTER HOLE IS
 HV6962'ALWAYS AT THE CENTER OF THE MONUMENT AND IF THE MARKING HAS BEEN
 HV6962'BROKEN OFF WITHOUT DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE
 HV6962'SECTION MAY BE USED AS THE LOCATION OF THE REFERENCE MARK.  THE
 HV6962'MONUMENT IS SET VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3
 HV6962'TO 5 INCHES ABOVE THE SURFACE.  IT IS NEAR TWIN OAK TREES, AND IS
 HV6962'21.48 METERS (70.5 FEET) FROM THE STATIONS 34 DEG 32 MIN E
 HV6962'DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 HV6962'FOLLOWS--4-FOOT OAK TREE, 23 YARDS, S 20 DEG 33 MIN W. RIGHT
 HV6962'TANGENT OF CHIMNEY OF PRIESTS HOUSE, 1-1/4 MILES, N 31 DEG 42
 HV6962'MIN W.  10-INCH TREE, 5 YARDS, N 18 DEG 27 MIN W.  NAIL IN BLAZE
 HV6962'IN 10-INCH PERSIMMON TREE, 8.27 METERS (27.13 FEET), N 78 DEG 25
 HV6962'MIN E.  NAIL IN BLAZE IN FORKED 12-INCH OAK TREE, 12.31 METERS
 HV6962'(40.4 FEET), S 61 DEG 50 MIN E.  NAIL IN BLAZE IN RIGHT ONE OF
 HV6962'12-INCH TWIN OAK TREES, 22.50 METERS (73.8 FEET), S 33 DEG 0 MIN E.
 HV6962
 HV6962                          STATION RECOVERY (1927)
 HV6962
 HV6962'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1927 (HRE)
 HV6962'STATION ROTTED OUT.  REFERENCE MARK, CEMENT MONUMENT MARYLAND
 HV6962'SHELL FISH SURVEY HAS BEEN MOVED.  TWIN OAK STILL STANDING.
 HV6962
 HV6962                          STATION RECOVERY (1942)
 HV6962
 HV6962'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6962'THIS STATION WAS LOCATED, BUT SINCE THERE ARE THREE CHIMNEYS AT
 HV6962'THIS HOUSE, TWO OF WHICH ARE NE CHIMNEYS AND THE CAP NO LONGER
 HV6962'EXISTS, WE WERE UNABLE TO DETERMINE WHICH CHIMNEY TO LOCATE.
 HV6962
 HV6962                          STATION RECOVERY (1958)
 HV6962
 HV6962'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6962'DUE TO THE LOSS OF ALL LOCAL REFERENCES, THE STATION COULD NOT BE
 HV6962'RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9597 ***********************************************************************
 AA9597  DESIGNATION -  GROVE
 AA9597  PID         -  AA9597
 AA9597  STATE/COUNTY-  MD/MONTGOMERY
 AA9597  COUNTRY     -  US
 AA9597  USGS QUAD   -  GAITHERSBURG (2016)
 AA9597
 AA9597                         *CURRENT SURVEY CONTROL
 AA9597  ______________________________________________________________________
 AA9597* NAD 83(2011) POSITION- 39 08 19.57511(N) 077 10 31.71264(W)   ADJUSTED
 AA9597* NAD 83(2011) ELLIP HT-   125.763 (meters)        (06/27/12)   ADJUSTED
 AA9597* NAD 83(2011) EPOCH   -  2010.00
 AA9597* NAVD 88 ORTHO HEIGHT -   157.5   (meters)      517.    (feet) GPS OBS
 AA9597  ______________________________________________________________________
 AA9597  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AA9597  GEOID HEIGHT    -        -32.096 (meters)                     GEOID93
 AA9597  GEOID HEIGHT    -        -31.728 (meters)                     GEOID18
 AA9597  NAD 83(2011) X  -  1,099,555.691 (meters)                     COMP
 AA9597  NAD 83(2011) Y  - -4,830,141.928 (meters)                     COMP
 AA9597  NAD 83(2011) Z  -  4,004,357.283 (meters)                     COMP
 AA9597  LAPLACE CORR    -          0.16  (seconds)                    DEFLEC18
 AA9597
 AA9597  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9597  Standards:
 AA9597         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9597            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9597  -------------------------------------------------------------------
 AA9597  NETWORK    1.01   2.27           0.43   0.39   1.16     -0.09968061
 AA9597  -------------------------------------------------------------------
 AA9597  Click here for local accuracies and other accuracy information.
 AA9597
 AA9597.The horizontal coordinates were established by GPS observations
 AA9597.and adjusted by the National Geodetic Survey in June 2012.
 AA9597
 AA9597.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9597.been affixed to the stable North American tectonic plate. See 
 AA9597.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9597
 AA9597.The horizontal coordinates are valid at the epoch date displayed above
 AA9597.which is a decimal equivalence of Year/Month/Day.
 AA9597
 AA9597.The orthometric height was determined by GPS observations and a
 AA9597.high-resolution geoid model.
 AA9597
 AA9597.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9597.GEOID18 height accuracy estimate available here.
 AA9597
 AA9597.Click photographs - Photos may exist for this station.
 AA9597
 AA9597.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9597
 AA9597.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9597
 AA9597.The ellipsoidal height was determined by GPS observations
 AA9597.and is referenced to NAD 83.
 AA9597
 AA9597. The following values were computed from the NAD 83(2011) position.
 AA9597
 AA9597;                    North         East     Units Scale Factor Converg.
 AA9597;SPC MD       -   163,426.005   384,829.516   MT  0.99996035   -0 06 36.5
 AA9597;SPC MD       -   536,173.48  1,262,561.50   sFT  0.99996035   -0 06 36.5
 AA9597;UTM  18      - 4,334,429.970   311,980.985   MT  1.00003530   -1 22 24.8
 AA9597
 AA9597!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9597!SPC MD       -   0.99998027  x   0.99996035  =   0.99994062
 AA9597!UTM  18      -   0.99998027  x   1.00003530  =   1.00001557
 AA9597
 AA9597_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1198034429(NAD 83)
 AA9597
 AA9597                          SUPERSEDED SURVEY CONTROL
 AA9597
 AA9597  NAD 83(2007)-  39 08 19.57530(N)    077 10 31.71330(W) AD(2002.00) 0
 AA9597  ELLIP H (02/10/07)  125.790  (m)                       GP(2002.00)    
 AA9597  ELLIP H (08/30/02)  125.786  (m)                       GP(       ) 4 2
 AA9597  NAD 83(1991)-  39 08 19.57520(N)    077 10 31.71323(W) AD(       ) 1
 AA9597  ELLIP H (01/29/96)  125.779  (m)                       GP(       ) 4 2
 AA9597
 AA9597.Superseded values are not recommended for survey control.
 AA9597
 AA9597.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9597.See file dsdata.pdf to determine how the superseded data were derived.
 AA9597
 AA9597_MARKER: DH = HORIZONTAL CONTROL DISK
 AA9597_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA9597_STAMPING: GROVE 1995
 AA9597_MARK LOGO: NGS
 AA9597_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9597_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA9597+STABILITY: SURFACE MOTION
 AA9597_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9597+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AA9597
 AA9597  HISTORY     - Date     Condition        Report By
 AA9597  HISTORY     - 1995     MONUMENTED       NGS
 AA9597  HISTORY     - 2000     GOOD             NGS
 AA9597  HISTORY     - 20041204 GOOD             GEOCAC
 AA9597
 AA9597                          STATION DESCRIPTION
 AA9597
 AA9597'DESCRIBED BY NATIONAL GEODETIC SURVEY 1995 (CWC)
 AA9597'THE STATION IS LOCATED IN THE TOWN OF WASHINGTON GROVE, ALONG THE OAK
 AA9597'STREET RIGHT-OF-WAY WITHIN WOODWARD PARK.  TO REACH THE STATION FROM
 AA9597'THE INTERSECTION OF MARYLAND ROUTE 355 AND SHADY GROVE ROAD, GO
 AA9597'NORTHEAST ON SHADY GROVE ROAD 0.3 MI (0.5 KM) TO OAKMONT AVE.  TURN
 AA9597'LEFT ON OAKMONT AVE AND GO 0.5 MI (0.8 KM) AND THEN TURN RIGHT OVER
 AA9597'RAILROAD TRACKS ONTO RAILROAD STREET.  GO 0.25 MI (0.4 KM) ON RAILROAD
 AA9597'STREET BENDING TO LEFT, AND THEN TURN RIGHT ONTO GROVE ROAD.  GO 0.1
 AA9597'MI (0.2 KM) ON GROVE ROAD AND TURN RIGHT ONTO GRAVEL DRIVEWAY ADJACENT
 AA9597'TO TENNIS COURTS.  THE STATION IS 86 FT (26 M) FROM PAVEMENT EDGE OF
 AA9597'GROVE ROAD, 13.5 FT (4.1 M) FROM TENNIS COURT FENCE, AND 17.5 FT (5.3
 AA9597'M) FROM WOODEN FLAGPOLE.  THE STATION IS ON PUBLIC PROPERTY, BUT
 AA9597'VEHICLE ACCESS IS RESTRICTED IN PARK AFTER DUSK. CONTACT THE MAYOR OF
 AA9597'THE TOWN OF WASHINGTON GROVE AT TELEPHONE 301-926-2256 IF VEHICLE
 AA9597'ACCESS AFTER DARK IS DESIRED.
 AA9597
 AA9597                          STATION RECOVERY (2000)
 AA9597
 AA9597'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000
 AA9597'ALONG OAK STREET RIGHT-OF-WAY WITHIN WOODWARD PARK (NEAR FLAGPOLE)
 AA9597'TRIANGULATION STATION DISK SET IN CONCRETE
 AA9597
 AA9597                          STATION RECOVERY (2004)
 AA9597
 AA9597'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 AA9597'MARK IS ABOUT 13.5 FEET SOUTHWEST OF TENNIS COURT FENCE AND ABOUT 17.5
 AA9597'FEET SOUTHEAST OF WOODEN FLAGPOLE (ADDING DIRECTION TO DISTANCES IN
 AA9597'1995 DESCRIPTION). STATION IS ALSO ABOUT 24 FEET SOUTH OF POWER POLE
 AA9597'750475-1343 AND ABOUT 8 FEET WEST OF A WOODEN POLE SUPPORTING A BIRD
 AA9597'FEEDER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3589 ***********************************************************************
 JU3589  DESIGNATION -  GROVE NECK CHAN N FRONT RNG LT
 JU3589  PID         -  JU3589
 JU3589  STATE/COUNTY-  MD/CECIL
 JU3589  COUNTRY     -  US
 JU3589  USGS QUAD   -  EARLEVILLE (2016)
 JU3589
 JU3589                         *CURRENT SURVEY CONTROL
 JU3589  ______________________________________________________________________
 JU3589* NAD 83(1991) POSITION- 39 29 33.72536(N) 075 56 21.18109(W)   ADJUSTED
 JU3589  ______________________________________________________________________
 JU3589  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 JU3589  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 JU3589  HORZ ORDER      -  THIRD
 JU3589
 JU3589.The horizontal coordinates were established by classical geodetic methods
 JU3589.and adjusted by the National Geodetic Survey in January 1992.
 JU3589
 JU3589.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3589.GEOID18 height accuracy estimate available here.
 JU3589
 JU3589.Click photographs - Photos may exist for this station.
 JU3589
 JU3589.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3589
 JU3589. The following values were computed from the NAD 83(1991) position.
 JU3589
 JU3589;                    North         East     Units Scale Factor Converg.
 JU3589;SPC MD       -   203,234.759   491,249.771   MT  1.00000775   +0 39 56.8
 JU3589;SPC MD       -   666,779.37  1,611,708.62   sFT  1.00000775   +0 39 56.8
 JU3589;UTM  18      - 4,371,875.519   419,237.907   MT  0.99968030   -0 35 50.5
 JU3589
 JU3589_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1923771875(NAD 83)
 JU3589
 JU3589                          SUPERSEDED SURVEY CONTROL
 JU3589
 JU3589  NAD 83(1986)-  39 29 33.71779(N)    075 56 21.18795(W) AD(       ) 3
 JU3589  NAD 27      -  39 29 33.32000(N)    075 56 22.40100(W) AD(       ) 3
 JU3589
 JU3589.Superseded values are not recommended for survey control.
 JU3589
 JU3589.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3589.See file dsdata.pdf to determine how the superseded data were derived.
 JU3589
 JU3589_MARKER: 14 = NAVIGATION LIGHT
 JU3589
 JU3589  HISTORY     - Date     Condition        Report By
 JU3589  HISTORY     - 1938     FIRST OBSERVED   CGS
 JU3589
 JU3589                          STATION DESCRIPTION
 JU3589
 JU3589'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3589'THE LIGHT IS LOCATED 4-1/2 MILES NE OF TURKEY POINT ON THE W SIDE
 JU3589'OF ELK RIVER IN 12 FEET OF WATER, 1/2 MILE N OF THE MOUTH OF
 JU3589'BOHEMIA RIVER, 3/4 MILE WNW OF TOWN POINT, AND 600 YARDS SE OF
 JU3589'THE HIGH-WATER LINE ON THE W SIDE OF ELK RIVER.
 JU3589'
 JU3589'THE POINT SIGHTED ON WAS THE FORWARD SUPPORT OF THE SIGHTING
 JU3589'BAR ON TOP OF THE RANGE LANTERN.  THE RANGE LANTERN IS ELEVATED
 JU3589'APPROXIMATELY 20 FEET ABOVE HIGH WATER, AND SETS ON TOP OF A
 JU3589'STEEL BATTERY HOUSE.  THE BATTERY HOUSE RESTS ON A CONCRETE SLAB
 JU3589'SUPPORTED BY 4 STEEL PILINGS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3581 ***********************************************************************
 JU3581  DESIGNATION -  GROVE NECK CHAN N REAR RNG LT
 JU3581  PID         -  JU3581
 JU3581  STATE/COUNTY-  MD/CECIL
 JU3581  COUNTRY     -  US
 JU3581  USGS QUAD   -  EARLEVILLE (2016)
 JU3581
 JU3581                         *CURRENT SURVEY CONTROL
 JU3581  ______________________________________________________________________
 JU3581* NAD 83(1991) POSITION- 39 29 54.90832(N) 075 55 56.32095(W)   ADJUSTED
 JU3581  ______________________________________________________________________
 JU3581  GEOID HEIGHT    -        -33.319 (meters)                     GEOID18
 JU3581  LAPLACE CORR    -         -0.86  (seconds)                    DEFLEC18
 JU3581  HORZ ORDER      -  THIRD
 JU3581
 JU3581.The horizontal coordinates were established by classical geodetic methods
 JU3581.and adjusted by the National Geodetic Survey in January 1992.
 JU3581
 JU3581.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3581.GEOID18 height accuracy estimate available here.
 JU3581
 JU3581.Click photographs - Photos may exist for this station.
 JU3581
 JU3581.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3581
 JU3581. The following values were computed from the NAD 83(1991) position.
 JU3581
 JU3581;                    North         East     Units Scale Factor Converg.
 JU3581;SPC MD       -   203,894.933   491,836.130   MT  1.00000886   +0 40 12.4
 JU3581;SPC MD       -   668,945.29  1,613,632.37   sFT  1.00000886   +0 40 12.4
 JU3581;UTM  18      - 4,372,522.394   419,838.479   MT  0.99967911   -0 35 34.9
 JU3581
 JU3581_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1983872522(NAD 83)
 JU3581
 JU3581                          SUPERSEDED SURVEY CONTROL
 JU3581
 JU3581  NAD 83(1986)-  39 29 54.90078(N)    075 55 56.32794(W) AD(       ) 3
 JU3581  NAD 27      -  39 29 54.50300(N)    075 55 57.54200(W) AD(       ) 3
 JU3581
 JU3581.Superseded values are not recommended for survey control.
 JU3581
 JU3581.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3581.See file dsdata.pdf to determine how the superseded data were derived.
 JU3581
 JU3581_MARKER: 14 = NAVIGATION LIGHT
 JU3581
 JU3581  HISTORY     - Date     Condition        Report By
 JU3581  HISTORY     - 1938     FIRST OBSERVED   CGS
 JU3581
 JU3581                          STATION DESCRIPTION
 JU3581
 JU3581'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JU3581'THE LIGHT IS LOCATED 6-3/4 MILES SW OF CHESAPEAKE CITY ON THE W
 JU3581'SIDE OF ELK RIVER IN 5 FEET OF WATER, 3/4 MILE NW OF TOWN POINT,
 JU3581'200 YARDS SSW OF A LARGE PRIVATE DOCK EXTENDING OUT FROM THE
 JU3581'FIRST PROMINENT POINT S OF HYLANDS POINT, AND 120 YARDS SE OF THE
 JU3581'HIGH-WATER LINE ON THE W SIDE OF ELK RIVER.
 JU3581'
 JU3581'THE POINT SIGHTED ON WAS THE FORWARD SUPPORT OF THE SIGHTING
 JU3581'BAR ON TOP OF THE RANGE LANTERN.  THE RANGE LANTERN IS ELEVATED
 JU3581'69 FEET ABOVE HIGH-WATER ON A SKELETON STEEL TOWER.  THE TOWER
 JU3581'RESTS ON A CONCRETE SLAB SUPPORTED BY STEEL PILING.  THE TOWER
 JU3581'ALSO SUPPORTS A BLACK AND WHITE SLATTED DAYMARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4890 ***********************************************************************
 JV4890  DESIGNATION -  GROVE NECK CHAN S FRONT RNG LT
 JV4890  PID         -  JV4890
 JV4890  STATE/COUNTY-  MD/KENT
 JV4890  COUNTRY     -  US
 JV4890  USGS QUAD   -  BETTERTON (2017)
 JV4890
 JV4890                         *CURRENT SURVEY CONTROL
 JV4890  ______________________________________________________________________
 JV4890* NAD 83(1991) POSITION- 39 22 12.53194(N) 076 04 58.31908(W)   ADJUSTED
 JV4890  ______________________________________________________________________
 JV4890  GEOID HEIGHT    -        -33.334 (meters)                     GEOID18
 JV4890  LAPLACE CORR    -         -0.83  (seconds)                    DEFLEC18
 JV4890  HORZ ORDER      -  THIRD
 JV4890
 JV4890.The horizontal coordinates were established by classical geodetic methods
 JV4890.and adjusted by the National Geodetic Survey in January 1992.
 JV4890
 JV4890.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4890.GEOID18 height accuracy estimate available here.
 JV4890
 JV4890.Click photographs - Photos may exist for this station.
 JV4890
 JV4890.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4890
 JV4890. The following values were computed from the NAD 83(1991) position.
 JV4890
 JV4890;                    North         East     Units Scale Factor Converg.
 JV4890;SPC MD       -   189,495.248   479,030.024   MT  0.99998701   +0 34 32.2
 JV4890;SPC MD       -   621,702.33  1,571,617.67   sFT  0.99998701   +0 34 32.2
 JV4890;UTM  18      - 4,358,412.755   406,722.112   MT  0.99970713   -0 41 13.0
 JV4890
 JV4890_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0672258412(NAD 83)
 JV4890
 JV4890                          SUPERSEDED SURVEY CONTROL
 JV4890
 JV4890  NAD 83(1986)-  39 22 12.52474(N)    076 04 58.32592(W) AD(       ) 3
 JV4890  NAD 27      -  39 22 12.14400(N)    076 04 59.50400(W) AD(       ) 3
 JV4890
 JV4890.Superseded values are not recommended for survey control.
 JV4890
 JV4890.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4890.See file dsdata.pdf to determine how the superseded data were derived.
 JV4890
 JV4890_MARKER: 15 = RANGE MARKER
 JV4890
 JV4890  HISTORY     - Date     Condition        Report By
 JV4890  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4890
 JV4890                          STATION DESCRIPTION
 JV4890
 JV4890'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4890'LIGHT IS LOCATED ON THE EASTERN SHORE OF CHESAPEAKE BAY, ON THE
 JV4890'S SIDE OF THE ENTRANCE TO THE SASSAFRAS RIVER, ONE MILE W OF
 JV4890'BETTERTON, MARYLAND.
 JV4890'
 JV4890'THE LIGHT IS 1/4 MILE N OF A LARGE WHITE HOUSE, 200 YARDS E OF
 JV4890'A LARGE CONCRETE PLATFORM ALONG THE SHORE, 10 METERS N OF THE TOP
 JV4890'OF A 50-FOOT BLUFF AND APPROXIMATELY 15 METERS S OF HIGH-WATER
 JV4890'LINE.  THE LIGHT IS ELEVATED 50 FEET ABOVE HIGH WATER ON A STEEL
 JV4890'TOWER WHICH ALSO SUPPORTS A BLACK AND WHITE SLATTED DAY MARK.
 JV4890'THE POINT SIGHTED ON WAS THE FORWARD SUPPORT OF THE SIGHTING BAR
 JV4890'ON THE UPPER OF TWO RANGE LANTERNS.
 JV4890'
 JV4890'TO REACH FROM BETTERTON FOLLOW THE ROAD W TOWARD HOWELL POINT
 JV4890'FOR 1 MILE.  TURN RIGHT AND FOLLOW ROAD AROUND TO THE LEFT FOR
 JV4890'0.4 MILE.  TURN RIGHT INTO DRIVE TO WHITE HOUSE.  FOLLOW LANE TO
 JV4890'W OF HOUSE FOR 0.25 MILE TO THE TOP OF THE BLUFF AND THE LIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4887 ***********************************************************************
 JV4887  DESIGNATION -  GROVE NECK CHAN S REAR RNG LT
 JV4887  PID         -  JV4887
 JV4887  STATE/COUNTY-  MD/KENT
 JV4887  COUNTRY     -  US
 JV4887  USGS QUAD   -  BETTERTON (2017)
 JV4887
 JV4887                         *CURRENT SURVEY CONTROL
 JV4887  ______________________________________________________________________
 JV4887* NAD 83(1991) POSITION- 39 20 49.83181(N) 076 06 34.99295(W)   ADJUSTED
 JV4887* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV4887  ______________________________________________________________________
 JV4887  GEOID HEIGHT    -        -33.316 (meters)                     GEOID18
 JV4887  LAPLACE CORR    -         -0.74  (seconds)                    DEFLEC18
 JV4887  HORZ ORDER      -  THIRD
 JV4887
 JV4887.The horizontal coordinates were established by classical geodetic methods
 JV4887.and adjusted by the National Geodetic Survey in January 1992.
 JV4887
 JV4887.The orthometric height was scaled from a topographic map.
 JV4887
 JV4887.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4887.GEOID18 height accuracy estimate available here.
 JV4887
 JV4887.Click photographs - Photos may exist for this station.
 JV4887
 JV4887.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4887
 JV4887. The following values were computed from the NAD 83(1991) position.
 JV4887
 JV4887;                    North         East     Units Scale Factor Converg.
 JV4887;SPC MD       -   186,922.066   476,740.956   MT  0.99998363   +0 33 31.6
 JV4887;SPC MD       -   613,260.14  1,564,107.62   sFT  0.99998363   +0 33 31.6
 JV4887;UTM  18      - 4,355,891.327   404,377.552   MT  0.99971258   -0 42 13.1
 JV4887
 JV4887!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4887!SPC MD       -   1.00000495  x   0.99998363  =   0.99998858
 JV4887!UTM  18      -   1.00000495  x   0.99971258  =   0.99971753
 JV4887
 JV4887:                Primary Azimuth Mark                     Grid Az
 JV4887:SPC MD       -  B TOWER                                  002 28 02.6
 JV4887:UTM  18      -  B TOWER                                  003 43 47.3
 JV4887
 JV4887_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0437755891(NAD 83)
 JV4887
 JV4887|---------------------------------------------------------------------|
 JV4887| PID    Reference Object                     Distance      Geod. Az  |
 JV4887|                                                           dddmmss.s |
 JV4887| JV4873 B TOWER                             APPROX.11.0 KM 0030134.2 |
 JV4887|---------------------------------------------------------------------|
 JV4887
 JV4887                          SUPERSEDED SURVEY CONTROL
 JV4887
 JV4887  NAD 83(1986)-  39 20 49.82498(N)    076 06 34.99985(W) AD(       ) 3
 JV4887  NAD 27      -  39 20 49.43800(N)    076 06 36.18500(W) AD(       ) 3
 JV4887
 JV4887.Superseded values are not recommended for survey control.
 JV4887
 JV4887.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4887.See file dsdata.pdf to determine how the superseded data were derived.
 JV4887
 JV4887_MARKER: 15 = RANGE MARKER
 JV4887
 JV4887  HISTORY     - Date     Condition        Report By
 JV4887  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4887
 JV4887                          STATION DESCRIPTION
 JV4887
 JV4887'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4887'LIGHT IS LOCATED ON THE EASTERN SHORE OF CHESAPEAKE BAY, 3 MILES
 JV4887'SW OF BETTERTON, MARYLAND, 1-1/2 MILES S OF HOWELL POINT ON
 JV4887'STILLPOND NECK.  THE LIGHT IS ELEVATED 70 FEET ABOVE THE GROUND
 JV4887'ON THE CENTER OF THE NORTHERN EDGE OF A WOODEN PLATFORM ON A
 JV4887'SKELETON STEEL TOWER.  THE POINT SIGHTED ON WAS THE CENTER OF THE
 JV4887'LENS OF THE UPPER OF TWO RANGE LANTERNS.  THE CENTER OF THE
 JV4887'STEEL TOWER IS 15 METERS S OF THE CENTER LINE OF A DIRT ROAD AND
 JV4887'APPROXIMATELY 110 METERS W OF A BRUSH COVERED FENCE LINE.
 JV4887'
 JV4887'TO REACH THE LIGHT FROM BETTERTON, MARYLAND, GO S FROM THE WHARF
 JV4887'ON THE MACADAM ROAD FOR 2.0 MILES.  TURN RIGHT ONTO A 9-FOOT
 JV4887'CONCRETE ROAD FOR 0.9 MILE.  CONTINUE STRAIGHT ON DIRT ROAD FOR
 JV4887'1.9 MILES TO THE TOWER AND LIGHT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4857 ***********************************************************************
 JV4857  DESIGNATION -  GROVE POINT 2 1898
 JV4857  PID         -  JV4857
 JV4857  STATE/COUNTY-  MD/CECIL
 JV4857  COUNTRY     -  US
 JV4857  USGS QUAD   -  SPESUTIE (2016)
 JV4857
 JV4857                         *CURRENT SURVEY CONTROL
 JV4857  ______________________________________________________________________
 JV4857* NAD 83(1991) POSITION- 39 23 16.82854(N) 076 02 24.06664(W)   ADJUSTED
 JV4857* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4857  ______________________________________________________________________
 JV4857  GEOID HEIGHT    -        -33.364 (meters)                     GEOID18
 JV4857  LAPLACE CORR    -         -1.16  (seconds)                    DEFLEC18
 JV4857  HORZ ORDER      -  THIRD
 JV4857
 JV4857.The horizontal coordinates were established by classical geodetic methods
 JV4857.and adjusted by the National Geodetic Survey in January 1992.
 JV4857
 JV4857.The orthometric height was scaled from a topographic map.
 JV4857
 JV4857.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4857.GEOID18 height accuracy estimate available here.
 JV4857
 JV4857.Click photographs - Photos may exist for this station.
 JV4857
 JV4857.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4857
 JV4857. The following values were computed from the NAD 83(1991) position.
 JV4857
 JV4857;                    North         East     Units Scale Factor Converg.
 JV4857;SPC MD       -   191,515.961   482,701.272   MT  0.99998974   +0 36 09.1
 JV4857;SPC MD       -   628,331.95  1,583,662.42   sFT  0.99998974   +0 36 09.1
 JV4857;UTM  18      - 4,360,351.532   410,435.933   MT  0.99969876   -0 39 36.0
 JV4857
 JV4857!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4857!SPC MD       -   1.00000527  x   0.99998974  =   0.99999501
 JV4857!UTM  18      -   1.00000527  x   0.99969876  =   0.99970403
 JV4857
 JV4857:                Primary Azimuth Mark                     Grid Az
 JV4857:SPC MD       -  STEPHENSON 2                             284 28 22.9
 JV4857:UTM  18      -  STEPHENSON 2                             285 44 08.0
 JV4857
 JV4857_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1043560351(NAD 83)
 JV4857
 JV4857|---------------------------------------------------------------------|
 JV4857| PID    Reference Object                     Distance      Geod. Az  |
 JV4857|                                                           dddmmss.s |
 JV4857| JV4941 STEPHENSON 2                        APPROX. 8.8 KM 2850432.0 |
 JV4857|---------------------------------------------------------------------|
 JV4857
 JV4857                          SUPERSEDED SURVEY CONTROL
 JV4857
 JV4857  NAD 83(1986)-  39 23 16.82110(N)    076 02 24.07350(W) AD(       ) 3
 JV4857  NAD 27      -  39 23 16.43300(N)    076 02 25.26500(W) AD(       ) 3
 JV4857  USSD        -  39 23 16.80300(N)    076 02 25.10500(W) AD(       ) 3
 JV4857
 JV4857.Superseded values are not recommended for survey control.
 JV4857
 JV4857.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4857.See file dsdata.pdf to determine how the superseded data were derived.
 JV4857
 JV4857_MARKER: N = NAIL
 JV4857_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4857_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4857
 JV4857  HISTORY     - Date     Condition        Report By
 JV4857  HISTORY     - 1898     MONUMENTED       CGS
 JV4857
 JV4857                          STATION DESCRIPTION
 JV4857
 JV4857'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JV4857'IN A CULTIVATED FIELD, 12 FEET BACK FROM EDGE OF BLUFF 40 FEET
 JV4857'HIGH, AND 1/2 MILE E OF GROVE POINT, THE POINT AT N SIDE OF MOUTH
 JV4857'OF SASSAFRAS RIVER.  MARKED BY TWO 4-INCH DRAIN TILES SET ONE
 JV4857'ABOVE THE OTHER, THE TOP OF THE UPPER PIPE BEING ABOUT 8 INCHES
 JV4857'BELOW THE SURFACE OF THE GROUND.  A PINE STAKE WITH NAIL IN TOP
 JV4857'WAS DRIVEN INSIDE THE PIPES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2300 ***********************************************************************
 JV2300  DESIGNATION -  GROVES
 JV2300  PID         -  JV2300
 JV2300  STATE/COUNTY-  MD/MONTGOMERY
 JV2300  COUNTRY     -  US
 JV2300  USGS QUAD   -  ROCKVILLE (2016)
 JV2300
 JV2300                         *CURRENT SURVEY CONTROL
 JV2300  ______________________________________________________________________
 JV2300* NAD 83(1993) POSITION- 39 06 37.99316(N) 077 11 16.84246(W)   ADJUSTED
 JV2300* NAVD 88 ORTHO HEIGHT -   155.386 (meters)      509.80  (feet) ADJUSTED
 JV2300  ______________________________________________________________________
 JV2300  GEOID HEIGHT    -        -31.712 (meters)                     GEOID18
 JV2300  LAPLACE CORR    -          0.32  (seconds)                    DEFLEC18
 JV2300  DYNAMIC HEIGHT  -        155.305 (meters)      509.53  (feet) COMP
 JV2300  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV2300
 JV2300  HORZ ORDER      -  SECOND
 JV2300  VERT ORDER      -  SECOND    CLASS 0
 JV2300
 JV2300.The horizontal coordinates were established by classical geodetic methods
 JV2300.and adjusted by the National Geodetic Survey in November 1994.
 JV2300
 JV2300.The orthometric height was determined by differential leveling and
 JV2300.adjusted by the NATIONAL GEODETIC SURVEY
 JV2300.in June 1991.
 JV2300
 JV2300.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2300.GEOID18 height accuracy estimate available here.
 JV2300
 JV2300.Click photographs - Photos may exist for this station.
 JV2300
 JV2300.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2300
 JV2300.The dynamic height is computed by dividing the NAVD 88
 JV2300.geopotential number by the normal gravity value computed on the
 JV2300.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2300.degrees latitude (g = 980.6199 gals.).
 JV2300
 JV2300.The modeled gravity was interpolated from observed gravity values.
 JV2300
 JV2300. The following values were computed from the NAD 83(1993) position.
 JV2300
 JV2300;                    North         East     Units Scale Factor Converg.
 JV2300;SPC MD       -   160,295.683   383,739.281   MT  0.99995822   -0 07 04.8
 JV2300;SPC MD       -   525,903.42  1,258,984.62   sFT  0.99995822   -0 07 04.8
 JV2300;UTM  18      - 4,331,324.196   310,821.923   MT  1.00004068   -1 22 50.3
 JV2300
 JV2300!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2300!SPC MD       -   0.99998060  x   0.99995822  =   0.99993882
 JV2300!UTM  18      -   0.99998060  x   1.00004068  =   1.00002128
 JV2300
 JV2300:                Primary Azimuth Mark                     Grid Az
 JV2300:SPC MD       -  GAITHERSBURG WASHINGTONIAN TK            287 17 38.5
 JV2300:UTM  18      -  GAITHERSBURG WASHINGTONIAN TK            288 33 24.0
 JV2300
 JV2300_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1082131324(NAD 83)
 JV2300
 JV2300|---------------------------------------------------------------------|
 JV2300| PID    Reference Object                     Distance      Geod. Az  |
 JV2300|                                                           dddmmss.s |
 JV2300| JV4382 SHADY GROVE WSSC TANK               APPROX. 1.3 KM 0361540.6 |
 JV2300| JV2301 GROVES RM 1                          30.420 METERS 14325     |
 JV2300| JV4370 GAITHERSBURG WASHINGTONIAN TK       461.955 METERS 2871033.7 |
 JV2300| JV2299 GROVES RM 2                          23.501 METERS 32947     |
 JV2300| JV2298 GROVES AZ MK                                       3440851.3 |
 JV2300|---------------------------------------------------------------------|
 JV2300
 JV2300                          SUPERSEDED SURVEY CONTROL
 JV2300
 JV2300  NAD 83(1991)-  39 06 37.99273(N)    077 11 16.84298(W) AD(       ) 2
 JV2300  NAD 83(1986)-  39 06 37.99271(N)    077 11 16.85280(W) AD(       ) 2
 JV2300  NAD 27      -  39 06 37.60422(N)    077 11 17.91625(W) AD(       ) 2
 JV2300  NGVD 29             155.60   (m)          510.5    (f) LEVELING    3  
 JV2300  NGVD 29 (11/26/84)  155.603  (m)          510.51   (f) ADJUSTED    2 0
 JV2300
 JV2300.Superseded values are not recommended for survey control.
 JV2300
 JV2300.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2300.See file dsdata.pdf to determine how the superseded data were derived.
 JV2300
 JV2300_MARKER: DS = TRIANGULATION STATION DISK
 JV2300_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2300_STAMPING: GROVES 1958
 JV2300_MARK LOGO: CGS
 JV2300_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2300+STABILITY: SURFACE MOTION
 JV2300
 JV2300  HISTORY     - Date     Condition        Report By
 JV2300  HISTORY     - 1958     MONUMENTED       CGS
 JV2300  HISTORY     - 1958     GOOD             CGS
 JV2300  HISTORY     - 1963     GOOD             CGS
 JV2300  HISTORY     - 1969     GOOD             CGS
 JV2300  HISTORY     - 20130518 MARK NOT FOUND   GEOCAC
 JV2300
 JV2300                          STATION DESCRIPTION
 JV2300
 JV2300'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2300'STATION IS LOCATED ABOUT 2.3 MILES SOUTH-SOUTHEAST OF THE CENTER OF
 JV2300'GAITHERSBURG, ABOUT 2-1/2 MILES NORTHWEST OF THE CENTER OF ROCKVILLE
 JV2300'AND NEAR THE SOUTHWEST END OF OVERPASS WHERE SHADY GROVE ROAD
 JV2300'PASSES OVER U.S. HIGHWAY NO. 240.  STATION IS 119 FEET NORTHWEST OF
 JV2300'THE SOUTHWEST END OF OVERPASS AND 8 INCHES EAST OF A WITNESS
 JV2300'POST.  THE MARK PROJECTS ABOUT 2 INCHES AND THE DISK IS STAMPED
 JV2300'GROVES 1958.
 JV2300'
 JV2300'REFERENCE MARK NO. 1 IS 19-1/2 FEET NORTHWEST OF THE SOUTHWEST END OF
 JV2300'OVERPASS.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED GROVES
 JV2300'NO 1 1953.
 JV2300'
 JV2300'REFERENCE MARK NO. 2 IS 2 FEET WEST OF THE WEST EDGE OF BACK SLOPE
 JV2300'OF HIGHWAY.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED GROVES
 JV2300'NO 2 1958.
 JV2300'
 JV2300'AZIMUTH MARK IS 19 PACES NORTHEAST OF APPROXIMATE CENTERLINE OF
 JV2300'U.S. HIGHWAY NO. 240, ABOUT 80 YARDS NORTH-NORTHWEST OF THE
 JV2300'NORTHWEST END OF IRON GUARDRAIL AND 2-1/2 FEET SOUTHEAST OF WITNESS
 JV2300'POST.  THE MARK PROJECTS 2 INCHES AND THE DISK IS STAMPED GROVES
 JV2300'1958.
 JV2300'
 JV2300'TO REACH FROM THE NORTHWEST CORNER OF POST OFFICE IN ROCKVILLE, GO
 JV2300'NORTHWEST ON STATE HIGHWAY NO. 28 FOR 1.0 MILE TO INTERCHANGE AT
 JV2300'U.S. HIGHWAY NO. 240.  TURN RIGHT AND GO NORTHWESTERLY ON U.S.
 JV2300'HIGHWAY NO. 240 FOR 1.8 MILES TO OVERPASS AND STATION AT SOUTHWEST
 JV2300'END OF OVERPASS AS DESCRIBED.  CONTINUE NORTHWESTERLY ON U.S.
 JV2300'HIGHWAY NO. 240 FOR 0.6 MILES TO AZIMUTH MARK ATOP A CUT
 JV2300'EMBANKMENT ON RIGHT (NORTHEAST) SIDE OF HIGHWAY AS DESCRIBED.
 JV2300'
 JV2300'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV2300
 JV2300                          STATION RECOVERY (1958)
 JV2300
 JV2300'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2300'3.6 MI S FROM GAITHERSBURG.
 JV2300'ABOUT 1.1 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2300'FROM THE OLD U.S. HIGHWAY 240 OVERPASS AT GAITHERSBURG, THENCE
 JV2300'2.8 MILES SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT,
 JV2300'ABOUT 0.3 MILE SOUTHEAST OF THE LARGE WASHINGTONIAN MOTEL, NEAR
 JV2300'THE SHADY GROVE BRIDGE OVER U.S. HIGHWAY 240, ABOUT 90 FEET
 JV2300'SOUTHWEST OF THE CENTER LINE OF THE SOUTH BOUND LANE, 114 FEET
 JV2300'NORTHWEST OF THE NORTHWEST CORNER OF THE BRIDGE, 1.5 FEET EAST OF
 JV2300'METAL WITNESS POST, SET IN THE TOP OF A CONCRETE POST FLUSH
 JV2300'WITH THE GROUND AND ABOUT 20 FEET ABOVE THE LEVEL OF THE HIGHWAY.
 JV2300
 JV2300                          STATION RECOVERY (1963)
 JV2300
 JV2300'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (JAN)
 JV2300'THE STATION MARK, REFERENCE MARKS NO. 1 AND 2 WERE RECOVERED AND
 JV2300'FOUND IN GOOD CONDITION.  THE AZIMUTH MARK HAS BEEN DESTROYED,
 JV2300'A PORTION OF THE MONUMENT WAS FOUND, THE DISK WAS NOT
 JV2300'RECOVERED.  THE STATION WAS NOT OCCUPIED AT THIS TIME BUT THE
 JV2300'TAPED DISTANCES TO THE REFERENCE MARKS WERE CHECKED AND FOUND
 JV2300'TO BE CORRECT.
 JV2300
 JV2300                          STATION RECOVERY (1969)
 JV2300
 JV2300'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV2300'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 JV2300'CONDITION.  THE AZIMUTH MARK HAS BEEN DESTROYED.  DUE TO CHANGES IN
 JV2300'THE ROADS A NEW DESCRIPTION FOLLOWS.
 JV2300'
 JV2300'THE STATION IS ABOUT 3-1/4 MILES NORTHWEST OF ROCKVILLE, 2 MILES
 JV2300'SOUTH OF GAITHERSBURG, AND ON THE WEST RIGHT-OF-WAY OF INTERSTATE
 JV2300'HIGHWAY 70 S.
 JV2300'
 JV2300'TO REACH THE STATION FROM THE POST OFFICE IN ROCKVILLE, GO
 JV2300'WEST-NORTHWEST ON STATE HIGHWAY 28 FOR 1.0 MILE TO THE INTERCHANGE
 JV2300'AT INTERSTATE HIGHWAY 70 S.  TURN RIGHT AND GO NORTH-NORTHEAST ON
 JV2300'INTERSTATE HIGHWAY 70 S FOR 1.8 MILES TO AN OVERPASS (SHADY GROVE
 JV2300'ROAD) AND THE STATION ON THE LEFT AT THE NORTHWEST CORNER OF THE
 JV2300'OVERPASS.
 JV2300'
 JV2300'THE STATION MARK IS A STANDARD DISK, STAMPED GROVES 1958, SET IN
 JV2300'THE TOP OF A 12-INCH SQUARE CONCRETE POST, THAT IS FLUSH WITH THE
 JV2300'GROUND SURFACE.  IT IS 118.8 FEET NORTH OF THE NORTHWEST CORNER OF
 JV2300'THE OVERPASS AND 13.0 FEET WEST OF THE CUTBANK FORMED BY INTERSTATE
 JV2300'HIGHWAY 70 S.
 JV2300'
 JV2300'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED GROVES NO 1 1958, SET
 JV2300'IN THE TOP OF A 12-INCH SQUARE CONCRETE POST, THAT IS FLUSH WITH
 JV2300'THE GROUND SURFACE.  IT IS 57.7 FEET WEST OF THE WEST ONE OF 3
 JV2300'CONCRETE SUPPORTS OF THE OVERPASS AND 19.4 FEET NORTH OF THE NORTH
 JV2300'CORNER OF THE NORTHWEST END OF THE OVERPASS.
 JV2300'
 JV2300'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED GROVES NO 2 1958, SET
 JV2300'IN THE TOP OF A 12-INCH SQUARE CONCRETE POST, THAT IS FLUSH WITH THE
 JV2300'GROUND SURFACE.  IT IS 195.8 FEET NORTH OF THE NORTHWEST CORNER OF
 JV2300'THE OVERPASS AND 37.5 FEET WEST OF THE WEST CURB OF THE
 JV2300'SOUTH-BOUND LANE OF INTERSTATE HIGHWAY 70 S.
 JV2300'
 JV2300'THE ABOVE INTERSECTION STATIONS WILL SERVE AS AZIMUTHS FOR THIS
 JV2300'STATION.
 JV2300'
 JV2300'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2 MILES SOUTH OF
 JV2300'GAITHERSBURG.
 JV2300
 JV2300                          STATION RECOVERY (2013)
 JV2300
 JV2300'RECOVERY NOTE BY GEOCACHING 2013 (RLM)
 JV2300'THE STATION MARK AND BOTH REFERENCE MARKS WERE SEARCHED FOR AND NOT
 JV2300'FOUND.  U.S. HIGHWAY 240, NOW INTERSTATE HIGHWAY 270, HAS BEEN WIDENED
 JV2300'CONSIDERABLY IN THIS AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2298 ***********************************************************************
 JV2298  DESIGNATION -  GROVES AZ MK
 JV2298  PID         -  JV2298
 JV2298  STATE/COUNTY-  MD/MONTGOMERY
 JV2298  COUNTRY     -  US
 JV2298  USGS QUAD   -  ROCKVILLE (2016)
 JV2298
 JV2298                         *CURRENT SURVEY CONTROL
 JV2298  ______________________________________________________________________
 JV2298* NAD 83(1986) POSITION- 39 07 02.     (N) 077 11 41.     (W)   SCALED
 JV2298* NAVD 88 ORTHO HEIGHT -   144.341 (meters)      473.56  (feet) ADJUSTED
 JV2298  ______________________________________________________________________
 JV2298  GEOID HEIGHT    -        -31.718 (meters)                     GEOID18
 JV2298  DYNAMIC HEIGHT  -        144.265 (meters)      473.31  (feet) COMP
 JV2298  MODELED GRAVITY -    980,100.5   (mgal)                       NAVD 88
 JV2298
 JV2298  VERT ORDER      -  SECOND    CLASS 0
 JV2298
 JV2298.The horizontal coordinates were scaled from a map and have
 JV2298.an estimated accuracy of +/- 6 seconds.
 JV2298
 JV2298.The orthometric height was determined by differential leveling and
 JV2298.adjusted by the NATIONAL GEODETIC SURVEY
 JV2298.in June 1991.
 JV2298
 JV2298.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2298.GEOID18 height accuracy estimate available here.
 JV2298
 JV2298.Click photographs - Photos may exist for this station.
 JV2298
 JV2298.The dynamic height is computed by dividing the NAVD 88
 JV2298.geopotential number by the normal gravity value computed on the
 JV2298.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2298.degrees latitude (g = 980.6199 gals.).
 JV2298
 JV2298.The modeled gravity was interpolated from observed gravity values.
 JV2298
 JV2298;                    North         East    Units  Estimated Accuracy
 JV2298;SPC MD       -   161,040.      383,160.      MT  (+/- 180 meters Scaled)
 JV2298
 JV2298_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ102320(NAD 83)
 JV2298
 JV2298                          SUPERSEDED SURVEY CONTROL
 JV2298
 JV2298  NGVD 29 (11/26/84)  144.556  (m)          474.26   (f) ADJUSTED    2 0
 JV2298
 JV2298.Superseded values are not recommended for survey control.
 JV2298
 JV2298.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2298.See file dsdata.pdf to determine how the superseded data were derived.
 JV2298
 JV2298_MARKER: DZ = AZIMUTH MARK DISK
 JV2298_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2298_STAMPING: GROVES 1958
 JV2298_MARK LOGO: CGS
 JV2298_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2298+STABILITY: SURFACE MOTION
 JV2298
 JV2298  HISTORY     - Date     Condition        Report By
 JV2298  HISTORY     - 1958     MONUMENTED       CGS
 JV2298
 JV2298                          STATION DESCRIPTION
 JV2298
 JV2298'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2298'3.3 MI S FROM GAITHERSBURG.
 JV2298'ABOUT 1.1 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2298'FROM THE OLD U.S. HIGHWAY OVERPASS AT GAITHERSBURG, THENCE 2.2
 JV2298'MILES SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT,
 JV2298'ABOUT 0.2 MILE NORTH OF THE WASHINGTONIAN MOTEL, 0.1 MILE SOUTH
 JV2298'OF A POWER LINE CROSSING, 60.7 FEET EAST OF THE CENTER LINE OF
 JV2298'THE HIGHWAY (NORTH BOUND LANE) 2 FEET SOUTH OF A METAL WITNESS
 JV2298'POST AND SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES
 JV2298'ABOVE THE GROUND AND ABOUT 20 FEET ABOVE THE LEVEL OF THE
 JV2298'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2301 ***********************************************************************
 JV2301  DESIGNATION -  GROVES RM 1
 JV2301  PID         -  JV2301
 JV2301  STATE/COUNTY-  MD/MONTGOMERY
 JV2301  COUNTRY     -  US
 JV2301  USGS QUAD   -  ROCKVILLE (2016)
 JV2301
 JV2301                         *CURRENT SURVEY CONTROL
 JV2301  ______________________________________________________________________
 JV2301* NAD 83(1986) POSITION- 39 06 37.20   (N) 077 11 16.09   (W)   HD_HELD1
 JV2301* NAVD 88 ORTHO HEIGHT -   156.071 (meters)      512.04  (feet) ADJUSTED
 JV2301  ______________________________________________________________________
 JV2301  GEOID HEIGHT    -        -31.712 (meters)                     GEOID18
 JV2301  DYNAMIC HEIGHT  -        155.990 (meters)      511.78  (feet) COMP
 JV2301  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV2301
 JV2301  VERT ORDER      -  SECOND    CLASS 0
 JV2301
 JV2301.The horizontal coordinates were determined by differentially corrected
 JV2301.hand held GPS observations or other comparable positioning techniques
 JV2301.and have an estimated accuracy of +/- 3 meters.
 JV2301
 JV2301.The orthometric height was determined by differential leveling and
 JV2301.adjusted by the NATIONAL GEODETIC SURVEY
 JV2301.in June 1991.
 JV2301
 JV2301.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2301.GEOID18 height accuracy estimate available here.
 JV2301
 JV2301.Click photographs - Photos may exist for this station.
 JV2301
 JV2301.The dynamic height is computed by dividing the NAVD 88
 JV2301.geopotential number by the normal gravity value computed on the
 JV2301.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2301.degrees latitude (g = 980.6199 gals.).
 JV2301
 JV2301.The modeled gravity was interpolated from observed gravity values.
 JV2301
 JV2301;                    North         East    Units  Estimated Accuracy
 JV2301;SPC MD       -   160,271.2     383,757.3     MT  (+/- 3 meters HH1 GPS) 
 JV2301
 JV2301_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1083931299(NAD 83)
 JV2301
 JV2301                          SUPERSEDED SURVEY CONTROL
 JV2301
 JV2301  NGVD 29 (11/26/84)  156.288  (m)          512.75   (f) ADJUSTED    2 0
 JV2301
 JV2301.Superseded values are not recommended for survey control.
 JV2301
 JV2301.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2301.See file dsdata.pdf to determine how the superseded data were derived.
 JV2301
 JV2301_MARKER: DR = REFERENCE MARK DISK
 JV2301_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2301_STAMPING: GROVES NO 1 1958
 JV2301_MARK LOGO: CGS
 JV2301_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2301+STABILITY: SURFACE MOTION
 JV2301
 JV2301  HISTORY     - Date     Condition        Report By
 JV2301  HISTORY     - 1958     MONUMENTED       CGS
 JV2301  HISTORY     - 20130518 MARK NOT FOUND   GEOCAC
 JV2301
 JV2301                          STATION DESCRIPTION
 JV2301
 JV2301'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2301'3.6 MI S FROM GAITHERSBURG.
 JV2301'ABOUT 1.1 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2301'FROM THE OLD U.S. HIGHWAY 240 OVERPASS AT GAITHERSBURG, THENCE
 JV2301'2.8 MILES SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A
 JV2301'CUT, ABOUT 0.3 MILE SOUTHEAST OF THE WASHINGTONIAN MOTEL, NEAR
 JV2301'THE SHADY GROVE BRIDGE OVER U.S. HIGHWAY 240, 100.0 FEET
 JV2301'SOUTH-SOUTHEAST OF THE STATION, 14 FEET NORTHWEST OF THE
 JV2301'NORTHWEST CORNER OF THE BRIDGE, SET IN THE TOP OF A CONCRETE
 JV2301'POST FLUSH WITH THE GROUND.
 JV2301
 JV2301                          STATION RECOVERY (2013)
 JV2301
 JV2301'RECOVERY NOTE BY GEOCACHING 2013 (RLM)
 JV2301'THE MARK WAS SEARCHED FOR AND NOT FOUND.  U.S. HIGHWAY 240, NOW
 JV2301'INTERSTATE HIGHWAY 270, HAS BEEN WIDENED CONSIDERABLY IN THIS AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2299 ***********************************************************************
 JV2299  DESIGNATION -  GROVES RM 2
 JV2299  PID         -  JV2299
 JV2299  STATE/COUNTY-  MD/MONTGOMERY
 JV2299  COUNTRY     -  US
 JV2299  USGS QUAD   -  ROCKVILLE (2016)
 JV2299
 JV2299                         *CURRENT SURVEY CONTROL
 JV2299  ______________________________________________________________________
 JV2299* NAD 83(1986) POSITION- 39 06 38.65   (N) 077 11 17.33   (W)   HD_HELD1
 JV2299* NAVD 88 ORTHO HEIGHT -   154.570 (meters)      507.12  (feet) ADJUSTED
 JV2299  ______________________________________________________________________
 JV2299  GEOID HEIGHT    -        -31.712 (meters)                     GEOID18
 JV2299  DYNAMIC HEIGHT  -        154.490 (meters)      506.86  (feet) COMP
 JV2299  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV2299
 JV2299  VERT ORDER      -  SECOND    CLASS 0
 JV2299
 JV2299.The horizontal coordinates were determined by differentially corrected
 JV2299.hand held GPS observations or other comparable positioning techniques
 JV2299.and have an estimated accuracy of +/- 3 meters.
 JV2299
 JV2299.The orthometric height was determined by differential leveling and
 JV2299.adjusted by the NATIONAL GEODETIC SURVEY
 JV2299.in June 1991.
 JV2299
 JV2299.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2299.GEOID18 height accuracy estimate available here.
 JV2299
 JV2299.Click photographs - Photos may exist for this station.
 JV2299
 JV2299.The dynamic height is computed by dividing the NAVD 88
 JV2299.geopotential number by the normal gravity value computed on the
 JV2299.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2299.degrees latitude (g = 980.6199 gals.).
 JV2299
 JV2299.The modeled gravity was interpolated from observed gravity values.
 JV2299
 JV2299;                    North         East    Units  Estimated Accuracy
 JV2299;SPC MD       -   160,316.0     383,727.6     MT  (+/- 3 meters HH1 GPS) 
 JV2299
 JV2299_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1081031344(NAD 83)
 JV2299
 JV2299                          SUPERSEDED SURVEY CONTROL
 JV2299
 JV2299  NGVD 29 (11/26/84)  154.787  (m)          507.83   (f) ADJUSTED    2 0
 JV2299
 JV2299.Superseded values are not recommended for survey control.
 JV2299
 JV2299.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2299.See file dsdata.pdf to determine how the superseded data were derived.
 JV2299
 JV2299_MARKER: DR = REFERENCE MARK DISK
 JV2299_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2299_STAMPING: GROVES NO 2 1958
 JV2299_MARK LOGO: CGS
 JV2299_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2299+STABILITY: SURFACE MOTION
 JV2299
 JV2299  HISTORY     - Date     Condition        Report By
 JV2299  HISTORY     - 1958     MONUMENTED       CGS
 JV2299  HISTORY     - 20130518 MARK NOT FOUND   GEOCAC
 JV2299
 JV2299                          STATION DESCRIPTION
 JV2299
 JV2299'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2299'3.6 MI S FROM GAITHERSBURG.
 JV2299'ABOUT 1.1 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV2299'FROM THE OLD U.S. HIGHWAY 240 OVERPASS AT GAITHERSBURG, THENCE
 JV2299'2.8 MILES SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT,
 JV2299'ABOUT 80 FEET SOUTHWEST OF THE CENTER LINE OF THE EAST BOUND
 JV2299'LANE, 77.2 FEET NORTH-NORTHWEST OF THE STATION, SET IN THE TOP
 JV2299'OF A CONCRETE POST PROJECTING 2 INCHES ABOVE THE GROUND.
 JV2299
 JV2299                          STATION RECOVERY (2013)
 JV2299
 JV2299'RECOVERY NOTE BY GEOCACHING 2013 (RLM)
 JV2299'THE MARK WAS SEARCHED FOR AND NOT FOUND.  U.S. HIGHWAY 240, NOW
 JV2299'INTERSTATE HIGHWAY 270, HAS BEEN WIDENED CONSIDERABLY IN THIS AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7983 ***********************************************************************
 AJ7983  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7983  DESIGNATION -  GRUB
 AJ7983  PID         -  AJ7983
 AJ7983  STATE/COUNTY-  MD/GARRETT
 AJ7983  COUNTRY     -  US
 AJ7983  USGS QUAD   -  DEER PARK (2016)
 AJ7983
 AJ7983                         *CURRENT SURVEY CONTROL
 AJ7983  ______________________________________________________________________
 AJ7983* NAD 83(2011) POSITION- 39 23 15.63677(N) 079 20 51.73896(W)   ADJUSTED
 AJ7983* NAD 83(2011) ELLIP HT-   752.648 (meters)        (06/27/12)   ADJUSTED
 AJ7983* NAD 83(2011) EPOCH   -  2010.00
 AJ7983* NAVD 88 ORTHO HEIGHT -   783.817 (meters)     2571.57  (feet) ADJUSTED
 AJ7983  ______________________________________________________________________
 AJ7983  GEOID HEIGHT    -        -31.161 (meters)                     GEOID18
 AJ7983  NAD 83(2011) X  -    912,543.089 (meters)                     COMP
 AJ7983  NAD 83(2011) Y  - -4,851,636.295 (meters)                     COMP
 AJ7983  NAD 83(2011) Z  -  4,026,150.765 (meters)                     COMP
 AJ7983  LAPLACE CORR    -         -0.48  (seconds)                    DEFLEC18
 AJ7983  DYNAMIC HEIGHT  -        783.272 (meters)     2569.78  (feet) COMP
 AJ7983  MODELED GRAVITY -    979,904.5   (mgal)                       NAVD 88
 AJ7983
 AJ7983  VERT ORDER      -  SECOND    CLASS I
 AJ7983
 AJ7983  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7983  Standards:
 AJ7983         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7983            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7983  -------------------------------------------------------------------
 AJ7983  NETWORK    0.98   1.76           0.42   0.38   0.90      0.13848280
 AJ7983  -------------------------------------------------------------------
 AJ7983  Click here for local accuracies and other accuracy information.
 AJ7983
 AJ7983.The horizontal coordinates were established by GPS observations
 AJ7983.and adjusted by the National Geodetic Survey in June 2012.
 AJ7983
 AJ7983.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7983.been affixed to the stable North American tectonic plate. See 
 AJ7983.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7983
 AJ7983.The horizontal coordinates are valid at the epoch date displayed above
 AJ7983.which is a decimal equivalence of Year/Month/Day.
 AJ7983
 AJ7983.The orthometric height was determined by differential leveling and
 AJ7983.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7983.in December 2003.
 AJ7983
 AJ7983.No vertical observational check was made to the station.
 AJ7983
 AJ7983.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7983.GEOID18 height accuracy estimate available here.
 AJ7983
 AJ7983.Click photographs - Photos may exist for this station.
 AJ7983
 AJ7983.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7983
 AJ7983.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7983
 AJ7983.The ellipsoidal height was determined by GPS observations
 AJ7983.and is referenced to NAD 83.
 AJ7983
 AJ7983.The dynamic height is computed by dividing the NAVD 88
 AJ7983.geopotential number by the normal gravity value computed on the
 AJ7983.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7983.degrees latitude (g = 980.6199 gals.).
 AJ7983
 AJ7983.The modeled gravity was interpolated from observed gravity values.
 AJ7983
 AJ7983. The following values were computed from the NAD 83(2011) position.
 AJ7983
 AJ7983;                    North         East     Units Scale Factor Converg.
 AJ7983;SPC MD       -   193,644.981   197,765.583   MT  0.99998969   -1 28 24.6
 AJ7983;SPC MD       -   635,316.91    648,835.92   sFT  0.99998969   -1 28 24.6
 AJ7983;UTM  17      - 4,361,101.105   642,294.943   MT  0.99984930   +1 02 55.2
 AJ7983
 AJ7983!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7983!SPC MD       -   0.99988193  x   0.99998969  =   0.99987162
 AJ7983!UTM  17      -   0.99988193  x   0.99984930  =   0.99973125
 AJ7983
 AJ7983_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4229461101(NAD 83)
 AJ7983
 AJ7983                          SUPERSEDED SURVEY CONTROL
 AJ7983
 AJ7983  NAD 83(2007)-  39 23 15.63694(N)    079 20 51.73970(W) AD(2002.00) 0
 AJ7983  ELLIP H (02/10/07)  752.670  (m)                       GP(2002.00)    
 AJ7983  NAD 83(1991)-  39 23 15.63705(N)    079 20 51.73982(W) AD(       ) A
 AJ7983  ELLIP H (02/12/02)  752.670  (m)                       GP(       ) 4 1
 AJ7983  NAVD 88 (02/12/02)  783.8    (m)  GEOID99  model used  GPS OBS        
 AJ7983
 AJ7983.Superseded values are not recommended for survey control.
 AJ7983
 AJ7983.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7983.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7983
 AJ7983_MARKER: DD = SURVEY DISK
 AJ7983_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ7983_STAMPING: GRUB 1993
 AJ7983_MARK LOGO: MDSHA
 AJ7983_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AJ7983_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ7983+STABILITY: SURFACE MOTION
 AJ7983_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7983+SATELLITE: SATELLITE OBSERVATIONS - July 17, 2001
 AJ7983
 AJ7983  HISTORY     - Date     Condition        Report By
 AJ7983  HISTORY     - 1993     MONUMENTED       MDSHA
 AJ7983  HISTORY     - 20000327 GOOD             MDSHA
 AJ7983  HISTORY     - 20010717 GOOD             MDSHA
 AJ7983
 AJ7983                          STATION DESCRIPTION
 AJ7983
 AJ7983'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7983'THE STATION IS LOCATED ABOUT 3.25 MILES (5.23 KM) SOUTHEAST OF
 AJ7983'OAKLAND, 6.0 MILES (9.7 KM) NORTH OF GORMAN, AND 9.0 MILES (14.5 KM)
 AJ7983'WEST OF KITZMILLER.  TO REACH THE STATION FROM THE INTERSECTION OF
 AJ7983'MARYLAND HIGHWAY 560 AND MARYLAND HIGHWAY 135 IN LOCK LYNN HEIGHTS, GO
 AJ7983'SOUTH ON MARYLAND HIGHWAY 560 FOR 0.2 MILES.  (0.3 KM) BEAR LEFT AND
 AJ7983'GO EAST ON MARYLAND HIGHWAY 560 FOR 1.4 MILES (2.3 KM) TO THE STATION
 AJ7983'ON THE RIGHT.  THE STATION IS A STANDARD MARYLAND STATE HIGHWAY SURVEY
 AJ7983'DISK SET IN THE TOP OF A CONCRETE MONUMENT WHICH IS 0.3 FEET (9.1 CM)
 AJ7983'BELOW THE SURFACE OF THE GROUND, AND ABOUT LEVEL WITH THE SURFACE OF
 AJ7983'THE ROAD.  IT IS 20.5 FEET (6.2 M) SOUTH OF THE CENTER LINE OF THE
 AJ7983'HIGHWAY, 18.7 FEET (5.7 M) NORTHWEST OF POWER POLE 2051, 32.0 FEET
 AJ7983'(9.8 M) WEST OF THE CENTER OF A MACADAM LANE LEADING TO L.  BITTINGER
 AJ7983'AND R.  HEIBIG HOUSES.
 AJ7983
 AJ7983                          STATION RECOVERY (2001)
 AJ7983
 AJ7983'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 AJ7983'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4290 ***********************************************************************
 HV4290  DESIGNATION -  GRUBB WSSD 1933
 HV4290  PID         -  HV4290
 HV4290  STATE/COUNTY-  MD/MONTGOMERY
 HV4290  COUNTRY     -  US
 HV4290  USGS QUAD   -  WASHINGTON WEST (2016)
 HV4290
 HV4290                         *CURRENT SURVEY CONTROL
 HV4290  ______________________________________________________________________
 HV4290* NAD 83(1993) POSITION- 38 59 48.14598(N) 077 03 03.54301(W)   ADJUSTED
 HV4290* NAVD 88 ORTHO HEIGHT -    99.    (meters)      325.    (feet) SCALED
 HV4290  ______________________________________________________________________
 HV4290  GEOID HEIGHT    -        -31.936 (meters)                     GEOID18
 HV4290  LAPLACE CORR    -         -2.58  (seconds)                    DEFLEC18
 HV4290  HORZ ORDER      -  THIRD
 HV4290
 HV4290.The horizontal coordinates were established by classical geodetic methods
 HV4290.and adjusted by the National Geodetic Survey in November 1994.
 HV4290
 HV4290.The orthometric height was scaled from a topographic map.
 HV4290
 HV4290.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4290.GEOID18 height accuracy estimate available here.
 HV4290
 HV4290.Click photographs - Photos may exist for this station.
 HV4290
 HV4290.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4290
 HV4290. The following values were computed from the NAD 83(1993) position.
 HV4290
 HV4290;                    North         East     Units Scale Factor Converg.
 HV4290;SPC MD       -   147,641.909   395,583.432   MT  0.99995207   -0 01 55.2
 HV4290;SPC MD       -   484,388.50  1,297,843.31   sFT  0.99995207   -0 01 55.2
 HV4290;SPC VA N     - 2,148,626.309 3,625,519.900   MT  0.99997024   +0 54 15.7
 HV4290;SPC VA N     - 7,049,284.82 11,894,726.54   sFT  0.99997024   +0 54 15.7
 HV4290;UTM  18      - 4,318,412.112   322,385.475   MT  0.99998846   -1 17 27.5
 HV4290
 HV4290!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4290!SPC MD       -   0.99998951  x   0.99995207  =   0.99994158
 HV4290!SPC VA N     -   0.99998951  x   0.99997024  =   0.99995975
 HV4290!UTM  18      -   0.99998951  x   0.99998846  =   0.99997797
 HV4290
 HV4290:                Primary Azimuth Mark                     Grid Az
 HV4290:SPC MD       -  BLAIR WSSD 1933                          109 34 39.3
 HV4290:SPC VA N     -  BLAIR WSSD 1933                          108 38 28.4
 HV4290:UTM  18      -  BLAIR WSSD 1933                          110 50 11.6
 HV4290
 HV4290_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2238518412(NAD 83)
 HV4290
 HV4290|---------------------------------------------------------------------|
 HV4290| PID    Reference Object                     Distance      Geod. Az  |
 HV4290|                                                           dddmmss.s |
 HV4290| HV4073 BLAIR WSSD 1933                     APPROX. 1.7 KM 1093244.1 |
 HV4290| HV4369 STANDPIPE NEAR STA DULCE            APPROX. 5.3 KM 2574537.1 |
 HV4290|---------------------------------------------------------------------|
 HV4290
 HV4290                          SUPERSEDED SURVEY CONTROL
 HV4290
 HV4290  NAD 83(1991)-  38 59 48.14545(N)    077 03 03.54383(W) AD(       ) 3
 HV4290  NAD 83(1986)-  38 59 48.14461(N)    077 03 03.55372(W) AD(       ) 3
 HV4290  NAD 27      -  38 59 47.75300(N)    077 03 04.63500(W) AD(       ) 3
 HV4290
 HV4290.Superseded values are not recommended for survey control.
 HV4290
 HV4290.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4290.See file dsdata.pdf to determine how the superseded data were derived.
 HV4290
 HV4290_MARKER: Z = SEE DESCRIPTION
 HV4290_SETTING: 0 = UNSPECIFIED SETTING
 HV4290_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV4290
 HV4290  HISTORY     - Date     Condition        Report By
 HV4290  HISTORY     - 1955     MONUMENTED       WSSC
 HV4290  HISTORY     - 20000617 MARK NOT FOUND   USPSQD
 HV4290
 HV4290                          STATION DESCRIPTION
 HV4290
 HV4290'DESCRIBED BY WASH SUBURB SAN COMM 1955 (JHP)
 HV4290'A 2-IN. PIPE AND SCREW ON THE PROPERTY OF MR. BAIN.  ABOUT 800
 HV4290'FT. N OF AND E-W HIGHWAY, APPROX. 3/4 MI. W OF 16TH STREET,
 HV4290'APPROX. 1800 FT. E OF THE INTERSECTION OF GRUBB ROAD AND
 HV4290'BROOKEVILLE-TENNELLYTOWN ROAD, AND 500 FT. S OF THE GEORGETOWN
 HV4290'BRANCH OF THE BALTIMORE AND OHIO RAILROAD.  STATION IS
 HV4290'APPROX. 15 IN. UNDER GROUND
 HV4290
 HV4290                          STATION RECOVERY (2000)
 HV4290
 HV4290'RECOVERY NOTE BY US POWER SQUADRON 2000 (CEM)
 HV4290'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8023 ***********************************************************************
 AJ8023  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8023  DESIGNATION -  GUARD
 AJ8023  PID         -  AJ8023
 AJ8023  STATE/COUNTY-  MD/QUEEN ANNES
 AJ8023  COUNTRY     -  US
 AJ8023  USGS QUAD   -  RIDGELY (2017)
 AJ8023
 AJ8023                         *CURRENT SURVEY CONTROL
 AJ8023  ______________________________________________________________________
 AJ8023* NAD 83(2011) POSITION- 38 55 29.61671(N) 075 57 31.17267(W)   ADJUSTED
 AJ8023* NAD 83(2011) ELLIP HT-   -15.946 (meters)        (06/27/12)   ADJUSTED
 AJ8023* NAD 83(2011) EPOCH   -  2010.00
 AJ8023* NAVD 88 ORTHO HEIGHT -    18.564 (meters)       60.91  (feet) ADJUSTED
 AJ8023  ______________________________________________________________________
 AJ8023  GEOID HEIGHT    -        -34.499 (meters)                     GEOID18
 AJ8023  NAD 83(2011) X  -  1,205,481.135 (meters)                     COMP
 AJ8023  NAD 83(2011) Y  - -4,820,101.966 (meters)                     COMP
 AJ8023  NAD 83(2011) Z  -  3,985,823.780 (meters)                     COMP
 AJ8023  LAPLACE CORR    -         -3.65  (seconds)                    DEFLEC18
 AJ8023  DYNAMIC HEIGHT  -         18.553 (meters)       60.87  (feet) COMP
 AJ8023  MODELED GRAVITY -    980,052.7   (mgal)                       NAVD 88
 AJ8023
 AJ8023  VERT ORDER      -  SECOND    CLASS I
 AJ8023
 AJ8023  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8023  Standards:
 AJ8023         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8023            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8023  -------------------------------------------------------------------
 AJ8023  NETWORK    0.33   0.51           0.15   0.12   0.26     -0.02739801
 AJ8023  -------------------------------------------------------------------
 AJ8023  Click here for local accuracies and other accuracy information.
 AJ8023
 AJ8023.The horizontal coordinates were established by GPS observations
 AJ8023.and adjusted by the National Geodetic Survey in June 2012.
 AJ8023
 AJ8023.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8023.been affixed to the stable North American tectonic plate. See 
 AJ8023.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8023
 AJ8023.The horizontal coordinates are valid at the epoch date displayed above
 AJ8023.which is a decimal equivalence of Year/Month/Day.
 AJ8023
 AJ8023.The orthometric height was determined by differential leveling and
 AJ8023.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8023.in September 2004.
 AJ8023
 AJ8023.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8023.GEOID18 height accuracy estimate available here.
 AJ8023
 AJ8023.Click photographs - Photos may exist for this station.
 AJ8023
 AJ8023.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8023
 AJ8023.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8023
 AJ8023.The ellipsoidal height was determined by GPS observations
 AJ8023.and is referenced to NAD 83.
 AJ8023
 AJ8023.The dynamic height is computed by dividing the NAVD 88
 AJ8023.geopotential number by the normal gravity value computed on the
 AJ8023.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8023.degrees latitude (g = 980.6199 gals.).
 AJ8023
 AJ8023.The modeled gravity was interpolated from observed gravity values.
 AJ8023
 AJ8023. The following values were computed from the NAD 83(2011) position.
 AJ8023
 AJ8023;                    North         East     Units Scale Factor Converg.
 AJ8023;SPC MD       -   140,183.707   490,296.456   MT  0.99995021   +0 39 12.9
 AJ8023;SPC MD       -   459,919.38  1,608,580.96   sFT  0.99995021   +0 39 12.9
 AJ8023;UTM  18      - 4,308,878.814   416,899.515   MT  0.99968503   -0 36 08.5
 AJ8023
 AJ8023!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8023!SPC MD       -   1.00000250  x   0.99995021  =   0.99995271
 AJ8023!UTM  18      -   1.00000250  x   0.99968503  =   0.99968753
 AJ8023
 AJ8023_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1689908878(NAD 83)
 AJ8023
 AJ8023                          SUPERSEDED SURVEY CONTROL
 AJ8023
 AJ8023  NAD 83(2007)-  38 55 29.61673(N)    075 57 31.17357(W) AD(2002.00) 0
 AJ8023  ELLIP H (02/10/07)  -15.887  (m)                       GP(2002.00)    
 AJ8023  NAD 83(1991)-  38 55 29.61671(N)    075 57 31.17360(W) AD(       ) A
 AJ8023  ELLIP H (02/12/02)  -15.885  (m)                       GP(       ) 4 1
 AJ8023  NAVD 88              18.56   (m)           60.9    (f) LEVELING    3  
 AJ8023  NAVD 88 (02/12/02)   18.6    (m)  GEOID99  model used  GPS OBS        
 AJ8023
 AJ8023.Superseded values are not recommended for survey control.
 AJ8023
 AJ8023.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8023.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8023
 AJ8023_MARKER: DD = SURVEY DISK
 AJ8023_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8023_STAMPING: GUARD 2000
 AJ8023_MARK LOGO: MDSHA
 AJ8023_PROJECTION: RECESSED 10 CENTIMETERS
 AJ8023_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8023_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8023+STABILITY: SURFACE MOTION
 AJ8023_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8023+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2021
 AJ8023
 AJ8023  HISTORY     - Date     Condition        Report By
 AJ8023  HISTORY     - 2000     MONUMENTED       MDSHA
 AJ8023  HISTORY     - 20020619 GOOD             MDSHA
 AJ8023  HISTORY     - 20050319 GOOD             USPSQD
 AJ8023  HISTORY     - 20060829 GOOD             JMTMD
 AJ8023  HISTORY     - 20210309 GOOD             MDSHA
 AJ8023
 AJ8023                          STATION DESCRIPTION
 AJ8023
 AJ8023'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8023'THE STATION IS LOCATED ABOUT 12.2 MILES (19.6 KM) NORTHEAST OF EASTON,
 AJ8023'AND 9.9 MILES (15.9 KM) SOUTHEAST OF CENTREVILLE, ON THE PROPERTY OF
 AJ8023'THE MARYLAND NATIONAL GUARD IN THE TOWN OF QUEEN ANNES.  TO REACH THE
 AJ8023'STATION FROM THE POST OFFICE IN QUEEN ANNES, GO EAST ALONG RAILROAD
 AJ8023'AVENUE FOR 0.1 MILES (0.2 KM) TO A T-INTERSECTION.  TURN LEFT AND GO
 AJ8023'NORTH ALONG MAIN STREET AND STATE HIGHWAY 309 FOR 0.25 MILES (0.40 KM)
 AJ8023'TO STATE HIGHWAY 404.  CONTINUE NORTH ALONG STATE HIGHWAY 309 FOR 0.05
 AJ8023'MILES (0.08 KM) TO THE ENTRANCE TO THE MARYLAND NATION GUARD COMPLEX.
 AJ8023'TURN RIGHT AND GO 150 FEET (45.7 M) TO THE ENTRANCE TO A MACADAM
 AJ8023'PARKING LOT ON THE LEFT.  TURN LEFT AND GO 100 FEET (30.5 M) TO THE
 AJ8023'STATION ON THE LEFT.  THE STATION IS A MARYLAND STATE SURVEY DISK SET
 AJ8023'IN THE TOP OF A 12 INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH
 AJ8023'THE GROUND.  IT IS 143.5 FEET (43.7 M) EAST-NORTHEAST OF THE CENTER
 AJ8023'LINE OF THE STATE HIGHWAY 309, 85.0 FEET (25.9 M) EAST OF TELEPHONE
 AJ8023'JUNCTION BOX NUMBER 15, 113.5 FEET (34.6 M) SOUTHWEST OF THE NORTHWEST
 AJ8023'CORNER OF THE MACADAM PARKING LOT, 118.5 FEET (36.1 M) NORTHWEST OF
 AJ8023'THE SOUTHWEST CORNER OF THE PARKING LOT, 140.5 FEET (42.8 M) WEST OF
 AJ8023'THE MOST SOUTHERLY OF TWO METAL LIGHT POLE LOCATED IN THE PARKING LOT,
 AJ8023'AND ABOUT 3.0 FEET (0.9 M) HIGHER THAN THE SURFACE OF THE PARKING LOT.
 AJ8023
 AJ8023                          STATION RECOVERY (2002)
 AJ8023
 AJ8023'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 AJ8023'RECOVERED AS DESCRIBED.
 AJ8023
 AJ8023                          STATION RECOVERY (2005)
 AJ8023
 AJ8023'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 AJ8023'THE MARK IS 138.5 FEET N ENTRANCE ROAD, IN THE CENTER AND ON TOP OF A
 AJ8023'KNOLL.
 AJ8023
 AJ8023                          STATION RECOVERY (2006)
 AJ8023
 AJ8023'RECOVERY NOTE BY JMT ENGINEERING 2006 (BJB)
 AJ8023'RECOVERED IN GOOD CONDITION.
 AJ8023
 AJ8023                          STATION RECOVERY (2021)
 AJ8023
 AJ8023'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 AJ8023'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6833 ***********************************************************************
 HV6833  DESIGNATION -  GUEST MSFC 1908
 HV6833  PID         -  HV6833
 HV6833  STATE/COUNTY-  MD/ST MARYS
 HV6833  COUNTRY     -  US
 HV6833  USGS QUAD   -  LEONARDTOWN (2016)
 HV6833
 HV6833                         *CURRENT SURVEY CONTROL
 HV6833  ______________________________________________________________________
 HV6833* NAD 83(1993) POSITION- 38 17 43.71846(N) 076 42 52.88378(W)   ADJUSTED
 HV6833* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6833  ______________________________________________________________________
 HV6833  GEOID HEIGHT    -        -33.758 (meters)                     GEOID18
 HV6833  LAPLACE CORR    -         -1.82  (seconds)                    DEFLEC18
 HV6833  HORZ ORDER      -  THIRD
 HV6833
 HV6833.The horizontal coordinates were established by classical geodetic methods
 HV6833.and adjusted by the National Geodetic Survey in November 1994.
 HV6833
 HV6833.The orthometric height was scaled from a topographic map.
 HV6833
 HV6833.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6833.GEOID18 height accuracy estimate available here.
 HV6833
 HV6833.Click photographs - Photos may exist for this station.
 HV6833
 HV6833.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6833
 HV6833. The following values were computed from the NAD 83(1993) position.
 HV6833
 HV6833;                    North         East     Units Scale Factor Converg.
 HV6833;SPC MD       -    69,839.833   424,958.583   MT  1.00000079   +0 10 44.7
 HV6833;SPC MD       -   229,132.85  1,394,218.28   sFT  1.00000079   +0 10 44.7
 HV6833;UTM  18      - 4,239,990.360   350,055.604   MT  0.99987690   -1 03 46.2
 HV6833
 HV6833!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6833!SPC MD       -   1.00000518  x   1.00000079  =   1.00000597
 HV6833!UTM  18      -   1.00000518  x   0.99987690  =   0.99988208
 HV6833
 HV6833:                Primary Azimuth Mark                     Grid Az
 HV6833:SPC MD       -  STONES MSFC 1908                         342 53 48.7
 HV6833:UTM  18      -  STONES MSFC 1908                         344 08 19.6
 HV6833
 HV6833_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5005539990(NAD 83)
 HV6833
 HV6833|---------------------------------------------------------------------|
 HV6833| PID    Reference Object                     Distance      Geod. Az  |
 HV6833|                                                           dddmmss.s |
 HV6833| HV6834 STONES MSFC 1908                    APPROX. 1.1 KM 3430433.4 |
 HV6833|---------------------------------------------------------------------|
 HV6833
 HV6833                          SUPERSEDED SURVEY CONTROL
 HV6833
 HV6833  NAD 83(1991)-  38 17 43.71732(N)    076 42 52.88911(W) AD(       ) 3
 HV6833  NAD 83(1986)-  38 17 43.71812(N)    076 42 52.90052(W) AD(       ) 3
 HV6833  NAD 27      -  38 17 43.29200(N)    076 42 53.98200(W) AD(       ) 3
 HV6833  USSD        -  38 17 43.89100(N)    076 42 53.94500(W) AD(       ) 3
 HV6833
 HV6833.Superseded values are not recommended for survey control.
 HV6833
 HV6833.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6833.See file dsdata.pdf to determine how the superseded data were derived.
 HV6833
 HV6833_MARKER: H = DRILL HOLE
 HV6833_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6833_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6833+STABILITY: SURFACE MOTION
 HV6833
 HV6833  HISTORY     - Date     Condition        Report By
 HV6833  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6833  HISTORY     - 1942     GOOD             CGS
 HV6833  HISTORY     - 1958     GOOD             CGS
 HV6833  HISTORY     - 1973     POOR             MDDNR
 HV6833
 HV6833                          STATION DESCRIPTION
 HV6833
 HV6833'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6833'STATION IS ON THE EASTERN SHORE OF UPPER ST. CLEMENT BAY, ON GUEST
 HV6833'POINT, ABOUT 1/2 MILE NE OF COBRUMS WHARF, AND 5/8 MILE SSE OF
 HV6833'STONES WHARF, ON A MARSH POINT, ABOUT 3 FEET ABOVE HIGH WATER, 32
 HV6833'YARDS N OF SHORE, 43 YARDS NE OF SHORE, 45 YARDS E OF SHORE, 95
 HV6833'YARDS WNW OF S CORNER OF FENCE, AND 175 YARDS SSW OF N CORNER OF
 HV6833'FENCE AT EDGE OF BANK.
 HV6833'
 HV6833'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6833'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6833'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6833'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6833'AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF REFERENCE ARE
 HV6833'AS FOLLOWS--LEFT TANGENT OF LEFT CHIMNEY OF HUDSONS HOUSE, 1-1/8
 HV6833'MILES, S 9 DEG 16 MIN W.  NEAR CHIMNEY OF HOUSE, 5/8 MILE, S 14
 HV6833'DEG 25 MIN W.  CHIMNEY ON MIDDLE OF HOUSE AMONG TREES, 5/8 MILE,
 HV6833'S 20 DEG 24 MIN W.  NAIL IN BLAZE IN CEDAR TREE 6 INCHES IN
 HV6833'DIAMETER, 12.57 METERS (41.2 FEET), S 42 DEG 59 MIN W.  NEAR PEAK
 HV6833'OF ROOF ON COBRUMS WHARF, 1/2 MILE, S 47 DEG 2 MIN W.  NAIL IN
 HV6833'BLAZE IN LOCUST TREE 6 INCHES IN DIAMETER, 20.25 METERS (66.4
 HV6833'FEET), S 62 DEG 37 MIN W.  NEAR CORNER OF CHIMNEY OF HOUSE ON
 HV6833'HILL, 1-3/4 MILES, N 50 DEG 50 MIN W.  NEAR CORNER OF LARGEST
 HV6833'CHIMNEY OF HOUSE ON HILL, 1-7/8 MILES, N 43 DEG 5 MIN W.  NEAR
 HV6833'PEAK OF ROOF ON STONES WHARF, 5/8 MILE, N 14 DEG 57 MIN W.  NEAR
 HV6833'CORNER OF HIGHEST CHIMNEY ON GREENWELLS HOUSE, 3/4 MILE, N 11 DEG
 HV6833'49 MIN W.  CEDAR TREE, 150 YARDS, N 4 DEG 40 MIN E.  LEFT CORNER
 HV6833'OF CHIMNEY OF HOUSE, 150 YARDS, N 45 DEG 0 MIN E.  PEAK OF NEAR
 HV6833'GABLE OF HOUSE ON HILL, 1 MILE, N 48 DEG 42 MIN E.  NEAR PEAK OF
 HV6833'ROOF OF HOUSE, 1/4 MILE, N 83 DEG 18 MIN E.  NEAR CORNER OF NEAR
 HV6833'CHIMNEY OF OLD HOUSE, 1/4 MILE, S 67 DEG 0 MIN E.  LEFT CHIMNEY OF
 HV6833'HOUSE, 1-5/8 MILES, S 16 DEG 28 MIN E.
 HV6833
 HV6833                          STATION RECOVERY (1942)
 HV6833
 HV6833'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV6833'STATION RECOVERED AND UPPER EXPOSED PORTION CRACKING BADLY.
 HV6833'
 HV6833'REACHED FROM THE SQUARE IN LEONARDSTOWN BY GOING N AND W ON ROUTE
 HV6833'5 FOR 2.5 MILES, THENCE LEFT (CLEMENTS ROAD) FOR 2.65 MILES, TURN
 HV6833'LEFT, GRAVEL ROAD, GO 1.65 MILES, ON MAIN ROAD, TURN RIGHT ON
 HV6833'SANDY FARM ROAD, GO 0.75 MILE TO FARMHOUSE OCCUPIED BY NORRIS.
 HV6833'
 HV6833'STATION IS ABOUT 1/4 MILE TO THE W IN OPEN MARSHY PASTURE LAND, 13
 HV6833'PACES E OF LONE CEDAR TREE.
 HV6833
 HV6833                          STATION RECOVERY (1958)
 HV6833
 HV6833'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6833'THE STATION WAS RECOVERED IN FAIR CONDITION.  THE UPPER EXPOSED
 HV6833'PORTION OF THE MONUMENT IS CRACKED.  THE ORIGINAL DESCRIPTION AND
 HV6833'RECOVERY NOTE BY C.T.H. IN 1942 IS ADEQUATE WITH THE FOLLOWING
 HV6833'ADDITIONS--
 HV6833'
 HV6833'THE LONE CEDAR TREE IS DEAD BUT WILL PROBABLY BE INTACT FOR
 HV6833'SEVERAL YEARS.  THE STATION IS 41.0 FEET EAST OF LONE CEDAR.  THE
 HV6833'MONUMENT PROJECTS 2 INCHES ABOVE THE GROUND.
 HV6833
 HV6833                          STATION RECOVERY (1973)
 HV6833
 HV6833'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV6833'MSFC-USCS FAIR
 HV6833'
 HV6833'RECOVERED AS DESCRIBED WITH ADDITION OF FOLLOWING--TOP OF MONUMENT
 HV6833'COMPLETELY BROKEN AWAY.  WITNESS POST AND SIGN PLACED 1 FT E OF
 HV6833'STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1600 ***********************************************************************
 HU1600  DESIGNATION -  GUILBERTS CUPOLA
 HU1600  PID         -  HU1600
 HU1600  STATE/COUNTY-  MD/WORCESTER
 HU1600  COUNTRY     -  US
 HU1600  USGS QUAD   -  PUBLIC LANDING (2016)
 HU1600
 HU1600                         *CURRENT SURVEY CONTROL
 HU1600  ______________________________________________________________________
 HU1600* NAD 83(1993) POSITION- 38 08 58.09533(N) 075 17 13.34837(W)   ADJUSTED
 HU1600  ______________________________________________________________________
 HU1600  GEOID HEIGHT    -        -36.282 (meters)                     GEOID18
 HU1600  LAPLACE CORR    -         -0.41  (seconds)                    DEFLEC18
 HU1600  HORZ ORDER      -  THIRD
 HU1600
 HU1600.The horizontal coordinates were established by classical geodetic methods
 HU1600.and adjusted by the National Geodetic Survey in November 1994.
 HU1600
 HU1600.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1600.GEOID18 height accuracy estimate available here.
 HU1600
 HU1600.Click photographs - Photos may exist for this station.
 HU1600
 HU1600.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1600
 HU1600. The following values were computed from the NAD 83(1993) position.
 HU1600
 HU1600;                    North         East     Units Scale Factor Converg.
 HU1600;SPC MD       -    55,002.481   550,143.131   MT  1.00002960   +1 04 30.4
 HU1600;SPC MD       -   180,453.97  1,804,927.92   sFT  1.00002960   +1 04 30.4
 HU1600;UTM  18      - 4,222,438.257   474,849.760   MT  0.99960779   -0 10 38.3
 HU1600
 HU1600_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7484922438(NAD 83)
 HU1600
 HU1600                          SUPERSEDED SURVEY CONTROL
 HU1600
 HU1600  NAD 83(1991)-  38 08 58.09459(N)    075 17 13.34967(W) AD(       ) 3
 HU1600  NAD 83(1986)-  38 08 58.08526(N)    075 17 13.38283(W) AD(       ) 3
 HU1600  NAD 27      -  38 08 57.65597(N)    075 17 14.69016(W) AD(       ) 3
 HU1600  USSD        -  38 08 57.83000(N)    075 17 14.39500(W) AD(       ) 3
 HU1600
 HU1600.Superseded values are not recommended for survey control.
 HU1600
 HU1600.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1600.See file dsdata.pdf to determine how the superseded data were derived.
 HU1600
 HU1600_MARKER: 86 = CUPOLA
 HU1600
 HU1600  HISTORY     - Date     Condition        Report By
 HU1600  HISTORY     - 1907     FIRST OBSERVED   MDSFC
 HU1600  HISTORY     - 1934     GOOD             CGS
 HU1600  HISTORY     - 1942     GOOD             CGS
 HU1600  HISTORY     - 1969     GOOD             LOCENG
 HU1600
 HU1600                          STATION DESCRIPTION
 HU1600
 HU1600'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1600'ON THE WESTERN SHORE OF CHINCOTEAGUE BAY, ABOUT 100 YARDS NW OF
 HU1600'THE LAND END OF SNOW HILL LANDING.  STATION IS CENTER POINT OF
 HU1600'CUPOLA ON A LARGE MANSION HOUSE.
 HU1600
 HU1600                          STATION RECOVERY (1934)
 HU1600
 HU1600'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1600'ON THE WESTERN SHORE OF CHINCOTEAGUE BAY, ABOUT 100 YARDS NW
 HU1600'OF THE SHORE END OF PUBLIC LANDING.  HOUSE IS LARGE, OF COLONIAL
 HU1600'TYPE, WHITE, AND HAS A CUPOLA, THE TOP OF WHICH IS ABOUT 35
 HU1600'FEET FROM THE GROUND.  AT PRESENT THE HOUSE IS OWNED AND OCCUPIED
 HU1600'BY MRS. CHARLES F. LESTER AND IS IN A GOOD STATE OF REPAIR.
 HU1600
 HU1600                          STATION RECOVERY (1942)
 HU1600
 HU1600'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1600'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HU1600'ORIGINAL DESCRIPTION--
 HU1600'
 HU1600'(1) THE HOUSE SUPPORTING THE CUPOLA IS NAMED HOTEL BAYVIEW.
 HU1600'
 HU1600'(2) THE PRESENT OWNER OF THE HOUSE IS ELDRIDGE TILGHMAN.
 HU1600'
 HU1600'THE STATION IS LOCATED ON THE WESTERN SHORE OF CHINCOTEAGUE BAY AT
 HU1600'A PLACE KNOWN AS PUBLIC LANDING, WHICH IS 6.4 MILES E OF SNOW HILL,
 HU1600'WORCESTER COUNTY, ABOUT 340 FEET NW OF THE SHORE END OF THE PUBLIC
 HU1600'LANDING PIER.
 HU1600'
 HU1600'THE STATION IS THE CENTER POINT OF THE CUPOLA ON A LARGE MANSION
 HU1600'HOUSE WHICH IS AT PRESENT NAMED HOTEL BAYVIEW AND IS OWNED BY
 HU1600'ELDRIDGE TILGHMAN.  THE STATION IS IN GOOD CONDITION.
 HU1600
 HU1600                          STATION RECOVERY (1969)
 HU1600
 HU1600'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1969 (GEH)
 HU1600'RECOVERED BY MDDCBA.
 HU1600'
 HU1600'NONE DESTROYED.
 HU1600'
 HU1600'DESCRIPTION BY W.D.P. 42 SHOULD BE CHANGED TO HOME OF MR. J. PERRY
 HU1600'DRISCOLL OF HATBORO PA., CUPOLA AND ROOF DESTROYED BY FIRE
 HU1600'3-8-69.  STATION IS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1349 ***********************************************************************
 JV1349  DESIGNATION -  GUILFORD
 JV1349  PID         -  JV1349
 JV1349  STATE/COUNTY-  MD/HOWARD
 JV1349  COUNTRY     -  US
 JV1349  USGS QUAD   -  SAVAGE (2016)
 JV1349
 JV1349                         *CURRENT SURVEY CONTROL
 JV1349  ______________________________________________________________________
 JV1349* NAD 83(1991) POSITION- 39 10 35.24643(N) 076 49 51.30356(W)   ADJUSTED
 JV1349* NAVD 88 ORTHO HEIGHT -   122.978 (meters)      403.47  (feet) ADJUSTED
 JV1349  ______________________________________________________________________
 JV1349  GEOID HEIGHT    -        -32.247 (meters)                     GEOID18
 JV1349  LAPLACE CORR    -         -3.92  (seconds)                    DEFLEC18
 JV1349  DYNAMIC HEIGHT  -        122.912 (meters)      403.25  (feet) COMP
 JV1349  MODELED GRAVITY -    980,093.5   (mgal)                       NAVD 88
 JV1349
 JV1349  HORZ ORDER      -  SECOND
 JV1349  VERT ORDER      -  SECOND    CLASS 0
 JV1349
 JV1349.The horizontal coordinates were established by classical geodetic methods
 JV1349.and adjusted by the National Geodetic Survey in January 1992.
 JV1349
 JV1349.The orthometric height was determined by differential leveling and
 JV1349.adjusted by the NATIONAL GEODETIC SURVEY
 JV1349.in June 1991.
 JV1349
 JV1349.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1349.GEOID18 height accuracy estimate available here.
 JV1349
 JV1349.Click photographs - Photos may exist for this station.
 JV1349
 JV1349.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1349
 JV1349.The dynamic height is computed by dividing the NAVD 88
 JV1349.geopotential number by the normal gravity value computed on the
 JV1349.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1349.degrees latitude (g = 980.6199 gals.).
 JV1349
 JV1349.The modeled gravity was interpolated from observed gravity values.
 JV1349
 JV1349. The following values were computed from the NAD 83(1991) position.
 JV1349
 JV1349;                    North         East     Units Scale Factor Converg.
 JV1349;SPC MD       -   167,608.692   414,610.005   MT  0.99996358   +0 06 22.0
 JV1349;SPC MD       -   549,896.18  1,360,266.32   sFT  0.99996358   +0 06 22.0
 JV1349;UTM  18      - 4,337,955.136   341,846.681   MT  0.99990798   -1 09 24.7
 JV1349
 JV1349!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1349!SPC MD       -   0.99998577  x   0.99996358  =   0.99994935
 JV1349!UTM  18      -   0.99998577  x   0.99990798  =   0.99989375
 JV1349
 JV1349:                Primary Azimuth Mark                     Grid Az
 JV1349:SPC MD       -  CLARKSVILLE ALLVIEW EST TANK             299 33 18.0
 JV1349:UTM  18      -  CLARKSVILLE ALLVIEW EST TANK             300 49 04.7
 JV1349
 JV1349_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4184637955(NAD 83)
 JV1349
 JV1349|---------------------------------------------------------------------|
 JV1349| PID    Reference Object                     Distance      Geod. Az  |
 JV1349|                                                           dddmmss.s |
 JV1349| JV6576 GUILFORD AZ MK 2                    APPROX. 1.0 KM 0135722.4 |
 JV1349| JV1348 GUILFORD RM 3                        30.891 METERS 03316     |
 JV1349| JV4052 GUILFORD RM 5                        32.977 METERS 03651     |
 JV1349| CA9470 GUILFORD RM 1                        28.492 METERS 04419     |
 JV1349| JV1351 GUILFORD AZ MK                                     0481253.7 |
 JV1349| JV5853 WATERLOO STATE POLICE RAD MAST      APPROX. 4.3 KM 0965551.6 |
 JV1349| JV5854 JESSUP PATUXENT INST TANK           APPROX. 4.7 KM 1093946.1 |
 JV1349| JV5834 FORT MEADE BIG TANK                 APPROX. 9.6 KM 1235832.6 |
 JV1349| JV5845 JESSUP ST HOUSE OF CORR TANK        APPROX. 5.8 KM 1243139.8 |
 JV1349| JV5846 JESSUP STATE HSE CORR NORTH TANK    APPROX. 5.8 KM 1243621.4 |
 JV1349| JV5855 JESSUP STATE HSE CORR SQUAT TANK    APPROX. 6.3 KM 1331023.1 |
 JV1349| JV6015 CLARKSVILLE ATT MICROWAVE           APPROX.13.3 KM 2905420.3 |
 JV1349| CA9471 GUILFORD RM 2                        34.988 METERS 29131     |
 JV1349| JV4051 GUILFORD RM 6                        42.920 METERS 29327     |
 JV1349| JV1350 GUILFORD RM 4                        42.928 METERS 29328     |
 JV1349| JV5849 CLARKSVILLE ALLVIEW EST TANK        APPROX. 3.2 KM 2993940.0 |
 JV1349|---------------------------------------------------------------------|
 JV1349
 JV1349                          SUPERSEDED SURVEY CONTROL
 JV1349
 JV1349  NAD 83(1986)-  39 10 35.24464(N)    076 49 51.31300(W) AD(       ) 2
 JV1349  NAD 27      -  39 10 34.85779(N)    076 49 52.41076(W) AD(       ) 2
 JV1349  NGVD 29             123.19   (m)          404.2    (f) LEVELING    3  
 JV1349  NGVD 29 (11/26/84)  123.190  (m)          404.17   (f) ADJUSTED    2 0
 JV1349
 JV1349.Superseded values are not recommended for survey control.
 JV1349
 JV1349.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1349.See file dsdata.pdf to determine how the superseded data were derived.
 JV1349
 JV1349_MARKER: DS = TRIANGULATION STATION DISK
 JV1349_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1349_STAMPING: GUILFORD 1942
 JV1349_MARK LOGO: CGS
 JV1349_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1349_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1349+STABILITY: SURFACE MOTION
 JV1349
 JV1349  HISTORY     - Date     Condition        Report By
 JV1349  HISTORY     - 1942     MONUMENTED       CGS
 JV1349  HISTORY     - 1957     GOOD             CGS
 JV1349  HISTORY     - 1966     GOOD             MDSRC
 JV1349  HISTORY     - 1980     GOOD             NGS
 JV1349  HISTORY     - 19801120 GOOD             NGS
 JV1349  HISTORY     - 20210210 MARK NOT FOUND   PROFLN
 JV1349
 JV1349                          STATION DESCRIPTION
 JV1349
 JV1349'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 JV1349'THE STATION IS LOCATED ABOUT 2 MILES W, 6.5 MILES S OF ELLICOTT
 JV1349'CITY AND ABOUT 5 MILES N AND 1 MILE E OF THE TOWN OF LAUREL AT
 JV1349'THE SITE OF THE CHRIST CHURCH PARISH HALL.  IT IS 45 FEET S OF
 JV1349'THE CENTER OF A GRAVEL ROAD, 21 FEET S OF A 18-INCH BLAZED CHERRY
 JV1349'TREE, 20 FEET N OF A E-W FENCE LINE AND 134 FEET NW OF THE NW
 JV1349'CORNER OF THE PARISH HALL.  IT IS STAMPED GUILFORD 1942 AND
 JV1349'PROJECTS ABOUT 5 INCHES.
 JV1349'
 JV1349'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV1349'DISKS SET IN CONCRETE.
 JV1349'
 JV1349'REFERENCE MARK NO.1 IS NE OF THE STATION, IN A FENCE LINE, 11
 JV1349'FEET N OF THE CENTER OF A GRAVEL ROAD.  IT IS STAMPED GUILFORD
 JV1349'NO.1 1942 AND PROJECTS ABOUT 8 INCHES.
 JV1349'
 JV1349'REFERENCE MARK NO.2 IS NW OF THE STATION, IN A FENCE LINE, 11
 JV1349'FEET N OF THE CENTER OF A GRAVEL ROAD.  IT IS STAMPED GUILFORD
 JV1349'NO.2 1942 AND PROJECTS ABOUT 4 INCHES.
 JV1349'
 JV1349'THE AZIMUTH MARK IS 0.4 MILE, AIR LINE, NE OF THE STATION AT A
 JV1349'FENCE CORNER.  IT IS 14 FEET W OF THE CENTER OF THE MACADAM ROAD,
 JV1349'178 FEET N OF THE CENTER OF A CROSSROADS.  IT IS STAMPED GUILFORD
 JV1349'1942 AND PROJECTS ABOUT 5 INCHES.  TO REACH THE AZIMUTH MARK
 JV1349'FROM THE STATION FOLLOW THE DESCRIPTION BACK TO THE MACADAM ROAD
 JV1349'AND TURN LEFT, N, AND GO 0.25 MILE TO THE AZIMUTH MARK ON THE
 JV1349'LEFT.
 JV1349'
 JV1349'TO REACH THE STATION FROM THE TRAFFIC LIGHT IN LAUREL, JUST E
 JV1349'OF THE POST OFFICE, GO NE ON U.S. HIGHWAY NO.1 FOR 3.5 MILES TO
 JV1349'THE JUNCTION OF STATE HIGHWAY NO.106 AT A SERVICE STATION.  TURN
 JV1349'LEFT ON STATE HIGHWAY NO.106 AND GO 1.2 MILES TO A MACADAM ROAD
 JV1349'LEFT.  CONTINUE STRAIGHT AHEAD FOR 0.55 MILE TO A FORKS.  TAKE
 JV1349'RIGHT FORK AND GO 0.95 MILE TO A T-ROAD LEFT (GRAVEL).  TURN
 JV1349'LEFT AND GO 0.15 MILE TO THE CHRIST CHURCH PARISH HALL AND THE
 JV1349'STATION ON THE LEFT.
 JV1349'
 JV1349'A 4-FOOT STAND WILL SEE A 100-FOOT LIGHT AT STATION JONESTOWN.
 JV1349'
 JV1349'A 50-FOOT TOWER WILL SEE A 110-FOOT LIGHT AT STATION SHIPLEY 1933.
 JV1349'
 JV1349'A 50-FOOT TOWER WILL SEE A 60-FOOT LIGHT AT STATION STATION 300
 JV1349'1933.
 JV1349'
 JV1349'A 90-FOOT TOWER WILL SEE A 120-FOOT LIGHT AT STATION COGGINS 2.
 JV1349'
 JV1349'A 37-FOOT TOWER WILL SEE A 4-FOOT LIGHT AT STATION RENN (W.S.S.D.).
 JV1349'
 JV1349'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION STABLER 1869.
 JV1349'
 JV1349'A 50-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION DAYTON.
 JV1349'
 JV1349'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV1349
 JV1349                          STATION RECOVERY (1957)
 JV1349
 JV1349'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV1349'STATION AND AZIMUTH MARK WERE RECOVERED AS DESCRIBED AND FOUND
 JV1349'TO BE IN GOOD CONDITION.  THE DIRECTION TO THE AZIMUTH MARK WAS
 JV1349'FOUND TO BE CORRECT.  REFERENCE MARK 1 HAS BEEN DISTURBED AND
 JV1349'REFERENCE MARK 2 WAS NOT RECOVERED SO REFERENCE MARKS 3 AND 4
 JV1349'WERE ESTABLISHED.  REFERENCE MARK 3 IS 25 FT. N OF THE
 JV1349'APPROXIMATE CENTERLINE OF A BLACK-TOP ROAD AND UNDER UTILITY
 JV1349'LINES.  THE MARK PROJECTS ABOUT 4 IN. AND THE DISK IS
 JV1349'STAMPED GUILFORD NO 3 1942.  REFERENCE MARK 4 IS 23
 JV1349'FT. N OF THE APPROXIMATE CENTERLINE OF A BLACK-TOP ROAD AND
 JV1349'UNDER UTILITY LINES.  THE MARK PROJECTS ABOUT 3 IN. AND THE
 JV1349'DISK IS STAMPED GUILFORD NO 4 1942.
 JV1349'
 JV1349'ORIGINAL DESCRIPTION IS ADEQUATE EXCEPT THERE IS NOW A HOME
 JV1349'BESIDE THE PARISH HALL AND A NEW DESCRIPTION TO REACH THE STATION
 JV1349'FOLLOWS--
 JV1349'
 JV1349'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 1 AND
 JV1349'STATE HIGHWAY 32 (ABOUT 3.5 MI. N OF LAUREL), GO NW ON STATE
 JV1349'HIGHWAY 32 FOR 1.8 MI. TO FORKS.  KEEP RIGHT FORK FOR 1.0 MI. TO
 JV1349'A REVERSE FORK.  TURN SHARP LEFT AND GO 0.15 MI. ON BERGER ROAD
 JV1349'TO THE STATION ON THE LEFT AS DESCRIBED.  TO REACH AZIMUTH MARK
 JV1349'FROM THE STATION RETURN TO THE REVERSE FORK.  TURN LEFT AND GO
 JV1349'0.25 MI. TO AZIMUTH MARK ON THE LEFT AS DESCRIBED.
 JV1349'
 JV1349'1957 OBSERVATIONS TAKEN FROM A 77-FT. TOWER.
 JV1349
 JV1349                          STATION RECOVERY (1966)
 JV1349
 JV1349'RECOVERY NOTE BY MD STATE ROADS COMM 1966
 JV1349'5 MI N FROM LAUREL.
 JV1349'FROM THE INTERSECTION OF U.S. HIGHWAY 1 AND STATE HIGHWAY 32, GO
 JV1349'NORTHWESTERLY ON STATE HIGHWAY 32 FOR 1.8 MILES TO FORKS.  KEEP
 JV1349'RIGHT FORK FOR 1.0 MILES TO REVERSE FORK.  TURN SHARP LEFT AND
 JV1349'GO 0.15 MILES ON BERGER ROAD TO STATION ON LEFT.  IT IS 45.0 FEET
 JV1349'SOUTH OF THE CENTERLINE OF A BERGER ROAD, 21.0 FEET SOUTH OF A
 JV1349'22 INCH BLAZED CHERRY TREE, 20.0 FEET NORTH OF A EAST-WEST FENCE
 JV1349'LINE AND 134.0 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE
 JV1349'PARISH HALL.  IT IS A STANDARD TRIANGULATION DISK SET IN THE TOP
 JV1349'OF A CONCRETE POST AND SET FLUSH WITH THE GROUND.
 JV1349
 JV1349                          STATION RECOVERY (1980)
 JV1349
 JV1349'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 (RGP)
 JV1349'THE STATION MARK AND REFERENCE MARK THREE WERE RECOVERED AND FOUND IN
 JV1349'GOOD CONDITION.  REFERENCE MARK FOUR WAS FOUND CUT OFF OF ITS STEM.  A
 JV1349'NEW REFERENCE MARK SIX WAS SET IN THE SAME HORIZONTAL POSITION AS THE
 JV1349'STEM FOR OLD REFERENCE MARK FOUR.  REFERENCE MARK THREE WAS RESET IN
 JV1349'THE NEAR SAME LOCATION AS OLD REFERENCE MARK ONE.  IT WAS MOVED AT THE
 JV1349'REQUEST OF THE PROPERTY OWNER WHICH WAS CONTINUOUSLY HITTING IT WHILE
 JV1349'MOWING HIS GRASS.  AFTER REFERENCE MARK FIVE WAS SET, OLD REFERENCE
 JV1349'MARK THREE WAS THEN DESTROYED.
 JV1349'
 JV1349'THE AZIMUTH MARK APPEARED TO HAVE BEEN DESTROYED BY ROAD
 JV1349'CONSTRUCTION.  A NEW AZIMUTH MARK TWO WAS ESTABLISHED.
 JV1349'
 JV1349'THE STATION IS LOCATED ABOUT 5-1/2 MILES NORTH OF LAUREL, 3-1/2 MILES
 JV1349'SOUTHEAST OF COLUMBIA, 1 MILE NORTHWEST OF GUILFORD AND ON PROPERTY
 JV1349'OWNED BY MR. JOHN DEVITT, 9577 BURGER ROAD, COLUMBIA, MARYLAND.
 JV1349'TELEPHONE NUMBER 301 995 1773.
 JV1349'
 JV1349'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAY 95
 JV1349'AND STATE HIGHWAY 175 IN THE NORTHWEST PART OF WATERLOO, GO NORTHWEST
 JV1349'ON STATE HIGHWAY 175 FOR 0.75 MILE TO STATE HIGHWAY 108.  CONTINUE
 JV1349'NORTHWEST ON STATE HIGHWAY 175 FOR 0.9 MILE TO A SIDE ROAD LEFT.
 JV1349'TURN LEFT AND GO WEST ON SNOWDEN RIVER PARKWAY FOR 1.2 MILES TO A
 JV1349'CROSSROADS.  TURN LEFT AND GO SOUTH ON OAKLAND MILL ROAD FOR 0.2 MILE
 JV1349'TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO WEST ON BERGER ROAD FOR 0.15
 JV1349'MILE TO THE STATION ON THE LEFT.
 JV1349'
 JV1349'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 JV1349'STAMPED---GUILFORD 1942---SET INTO THE TOP OF A SQUARE CONCRETE
 JV1349'MONUMENT 30 CM (12 INCHES) ON SIDE RECESSED 10 CM (4 INCHES) BELOW
 JV1349'THE GROUND LOCATED 26.46 METERS (86.8 FEET) SSE FROM A POWERLINE POLE
 JV1349'NUMBERED 157990 86, 26.06 METERS (85.5 FEET) SSE FROM A WITNESS POST,
 JV1349'23.5 METERS (77 FEET) SSW FROM A FIRE HYDRANT, 23.2 METERS (76 FEET)
 JV1349'NNW FROM THE NORTHWEST CORNER OF MR. DEVITTS RENTAL HOUSE, AND 15.39
 JV1349'METERS (50.5 FEET) S FROM THE CENTER OF BERGER ROAD.
 JV1349'
 JV1349'REFERENCE MARK NO. 5 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 JV1349'STAMPED---GUILFORD 1942 NO 5 1980---SET INTO THE TOP OF AN
 JV1349'IRREGULAR MASS OF CONCRETE FLUSH WITH THE GROUND LOCATED 37.8 METERS
 JV1349'(124 FEET) E FROM THE POWERLINE POLE NUMBERED 157990 86, 36.82 METERS
 JV1349'(120.8 FEET) E FROM THE WITNESS POST, 14.0 METERS (46 FEET) ENE FROM
 JV1349'THE FIRE HYDRANT, 7.77 METERS (25.5 FEET) N FROM THE CENTER OF BERGER
 JV1349'ROAD, AND 0.49 METER (1.6 FEET) LOWER THAN THE STATION.
 JV1349'
 JV1349'REFERENCE MARK NO. 6 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 JV1349'STAMPED---GUILFORD 1942 NO 6 1980---SET INTO THE TOP OF AN
 JV1349'IRREGULAR MASS OF CONCRETE FLUSH WITH THE GROUND LOCATED 23.01 METERS
 JV1349'(75.5 FEET) W FROM THE WITNESS POST, 21.9 METERS (72 FEET) W FROM THE
 JV1349'POWERLINE POLE NUMBERED 157990 86, 11.6 METERS (38 FEET) NNE FROM A
 JV1349'MAIL BOX MARKED 9221 BERGER ROAD, 7.0 METERS (23 FEET) N FROM THE
 JV1349'CENTER OF BERGER ROAD, AND 0.73 METER (2.4 FEET) LOWER THAN THE
 JV1349'STATION.
 JV1349'
 JV1349'AZIMUTH MARK NO. 2 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 JV1349'STAMPED---GUILFORD 1942 AZ 2 1980---CEMENTED IN A DRILL HOLE IN A
 JV1349'CURB ABOUT 100 YARDS NORTHWEST OF A CHURCH OF CHRIST AND ON THE
 JV1349'SOUTHWEST SIDE OF OAKLAND MILL ROAD.  MARK IS LOCATED 34.7 METERS
 JV1349'(114 FEET) NW FROM THE CENTER OF A ROAD LEADING TO THE CHURCH, 21.6
 JV1349'METERS (71 FEET) ESE FROM A MAIL BOX MARKED 6752 OAKLAND MILL ROAD,
 JV1349'19.05 METERS (62.5 FEET) ESE FROM A C AND P POWERLINE POLE NUMBERED
 JV1349'68, 20.21 METERS (66.3 FEET) SE FROM A FIRE HYDRANT, AND 7.9 METERS
 JV1349'(26 FEET) SW FROM THE CENTER OF OAKLAND MILL ROAD.
 JV1349'
 JV1349'TO REACH THE AZIMUTH MARK FROM THE STATION, GO BACK TO THE
 JV1349'INTERSECTION OF SNOWDEN RIVER PARKWAY AND OAKLAND MILL ROAD, THEN GO
 JV1349'NORTHERLY ON OAKLAND MILL ROAD FOR 0.5 MILE TO THE MARK ON THE LEFT.
 JV1349
 JV1349                          STATION RECOVERY (1980)
 JV1349
 JV1349'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980
 JV1349'THE STATION MARK AND REFERENCE MARK THREE WERE RECOVERED AND FOUND IN
 JV1349'GOOD CONDITION.  REFERENCE MARK FOUR WAS FOUND CUT OFF OF ITS STEM.  A
 JV1349'NEW REFERENCE MARK SIX WAS SET IN NEAR SAME HORIZONTAL POSITION AS THE
 JV1349'STEM FOR OLD REFERENCE MARK FOUR.  REFERENCE MARK FIVE WAS SET IN THE
 JV1349'NEAR SAME LOCATION AS OLD REFERENCE MARK ONE.  REFERENCE MARK THREE
 JV1349'WAS DESTROYED AT THE REQUEST OF THE PROPERTY OWNER.  HE KEPT
 JV1349'ACCIDENTLY HITTING IT AND DAMAGING HIS EQUIPMENT.  THE AZIMUTH MARK
 JV1349'WAS SEARCHED FOR BUT NOT FOUND AND BELIEVED DESRTROYED BY ROAD
 JV1349'CONSTRUCTION.  A NEW AZIMUTH MARK TWO WAS ESTABLISHED.
 JV1349'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV1349'THE STATION IS LOCATED ABOUT 8.85 KM (5.50 MI) NORTH OF LAUREL, 5.63
 JV1349'KM (3.50 MI) SOUTHEAST OF COLUMBIA AND 1.61 KM (1.00 MI) NORTHWEST OF
 JV1349'GUILFORD.  OWNERSHIP--MR. JOHN DEVITT, 9577 BURGER ROAD, COLUMBIA,
 JV1349'MARYLAND. TELEPHONE NUMBER 301-995-1773.
 JV1349'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 95 AND STATE
 JV1349'HIGHWAY 175 IN THE NORTHWEST PART OF WATERLOO, GO NORTHWEST ON STATE
 JV1349'HIGHWAY 175 FOR 1.21 KM (0.75 MI) TO STATE HIGHWAY 108.  CONTINUE
 JV1349'NORTHWEST ON STATE HIGHWAY 175 FOR 1.45 KM (0.90 MI) TO A SIDE ROAD
 JV1349'LEFT.  TURN LEFT AND GO SOUTHWEST ON SNOWDEN RIVER PARKWAY FOR 1.93 KM
 JV1349'(1.20 MI) TO A CROSSROADS.  TURN LEFT AND GO SOUTH ON OAKLAND MILL
 JV1349'ROAD FOR 0.32 KM (0.20 MI) TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO
 JV1349'WEST ON BERGER ROAD FOR 0.24 KM (0.15 MI) TO THE MARK.
 JV1349'THE DISK IS SET IN THE TOP OF THE 0.3 M (1.0 FT) MONUMENT WHICH IS
 JV1349'RECESSES 0.1 M (0.3 FT) BELOW THE SURFACE OF THE GROUND.  IT IS 26.45
 JV1349'M (86.8 FT) SOUTH-SOUTHEAST OF A POWERLINE POLE NUMBERED 157990 86,
 JV1349'26.06 M (85.5 FT) SOUTH-SOUTHEAST OF A WITNESS POST, 23.47 M
 JV1349'(77.0 FT) SOUTH-SOUTHWEST OF A FIRE HYDRANT, 23.16 M (76.0 FT)
 JV1349'NORTH-NORTHWEST OF THE NORTHWEST CORNER OF MR. DEVITTS RENTAL HOUSE
 JV1349'AND 15.39 M (50.5 FT) SOUTH OF THE CENTER OF BERGER ROAD.
 JV1349
 JV1349                          STATION RECOVERY (2021)
 JV1349
 JV1349'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV1349'THE POSITION OF THE MARK WAS SET OUT FROM A NEARBY OPUS-RS POINT.  IT
 JV1349'FALLS IN THE DRIVEWAY OF A CAR WASH.  SURFACE AND U.G. MARKS MAY STILL
 JV1349'EXIST UNDER THE ASPHALT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1351 ***********************************************************************
 JV1351  DESIGNATION -  GUILFORD AZ MK
 JV1351  PID         -  JV1351
 JV1351  STATE/COUNTY-  MD/HOWARD
 JV1351  COUNTRY     -  US
 JV1351  USGS QUAD   -  SAVAGE (2016)
 JV1351
 JV1351                         *CURRENT SURVEY CONTROL
 JV1351  ______________________________________________________________________
 JV1351* NAD 83(1986) POSITION- 39 10 49.     (N) 076 49 32.     (W)   SCALED
 JV1351* NAVD 88 ORTHO HEIGHT -   113.727 (meters)      373.12  (feet) ADJUSTED
 JV1351  ______________________________________________________________________
 JV1351  GEOID HEIGHT    -        -32.256 (meters)                     GEOID18
 JV1351  DYNAMIC HEIGHT  -        113.666 (meters)      372.92  (feet) COMP
 JV1351  MODELED GRAVITY -    980,092.9   (mgal)                       NAVD 88
 JV1351
 JV1351  VERT ORDER      -  SECOND    CLASS 0
 JV1351
 JV1351.The horizontal coordinates were scaled from a map and have
 JV1351.an estimated accuracy of +/- 6 seconds.
 JV1351
 JV1351.The orthometric height was determined by differential leveling and
 JV1351.adjusted by the NATIONAL GEODETIC SURVEY
 JV1351.in June 1991.
 JV1351
 JV1351.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1351.GEOID18 height accuracy estimate available here.
 JV1351
 JV1351.Click photographs - Photos may exist for this station.
 JV1351
 JV1351.The dynamic height is computed by dividing the NAVD 88
 JV1351.geopotential number by the normal gravity value computed on the
 JV1351.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1351.degrees latitude (g = 980.6199 gals.).
 JV1351
 JV1351.The modeled gravity was interpolated from observed gravity values.
 JV1351
 JV1351;                    North         East    Units  Estimated Accuracy
 JV1351;SPC MD       -   168,030.      415,070.      MT  (+/- 180 meters Scaled)
 JV1351
 JV1351_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ423383(NAD 83)
 JV1351
 JV1351                          SUPERSEDED SURVEY CONTROL
 JV1351
 JV1351  NGVD 29 (11/26/84)  113.940  (m)          373.82   (f) ADJUSTED    2 0
 JV1351
 JV1351.Superseded values are not recommended for survey control.
 JV1351
 JV1351.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1351.See file dsdata.pdf to determine how the superseded data were derived.
 JV1351
 JV1351_MARKER: DZ = AZIMUTH MARK DISK
 JV1351_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1351_STAMPING: GUILFORD 1942
 JV1351_MARK LOGO: CGS
 JV1351_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1351+STABILITY: SURFACE MOTION
 JV1351
 JV1351  HISTORY     - Date     Condition        Report By
 JV1351  HISTORY     - 1942     MONUMENTED       CGS
 JV1351  HISTORY     - 1966     GOOD             MDSRC
 JV1351
 JV1351                          STATION DESCRIPTION
 JV1351
 JV1351'DESCRIBED BY MD STATE ROADS COMM 1966
 JV1351'5 MI N FROM LAUREL.
 JV1351'FROM THE INTERSECTION OF U.S. HIGHWAY 1 AND STATE HIGHWAY 32 GO
 JV1351'NORTHWESTERLY ON STATE HIGHWAY 32 FOR 1.8 MILES TO FORKS.  KEEP
 JV1351'RIGHT FORK FOR 1.0 MILES TO REVERSE FORK.  KEEP RIGHT FORK FOR
 JV1351'0.25 MILES AND STATION ON LEFT.  IT IS 14.0 FEET WEST OF THE
 JV1351'CENTERLINE OF THE ROAD, 178.0 FEET NORTH OF THE CENTER OF CROSSROADS.
 JV1351'IT IS A STANDARD AZIMUTH MARK DISK SET IN A CONCRETE POST AND
 JV1351'PROJECTS 5 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6576 ***********************************************************************
 JV6576  DESIGNATION -  GUILFORD AZ MK 2
 JV6576  PID         -  JV6576
 JV6576  STATE/COUNTY-  MD/HOWARD
 JV6576  COUNTRY     -  US
 JV6576  USGS QUAD   -  SAVAGE (2016)
 JV6576
 JV6576                         *CURRENT SURVEY CONTROL
 JV6576  ______________________________________________________________________
 JV6576* NAD 83(1991) POSITION- 39 11 06.73230(N) 076 49 41.24943(W)   NO CHECK
 JV6576* NAVD 88 ORTHO HEIGHT -   108.9   (meters)      357.    (feet) VERTCON3
 JV6576  ______________________________________________________________________
 JV6576  GEOID HEIGHT    -        -32.248 (meters)                     GEOID18
 JV6576  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 JV6576  HORZ ORDER      -  THIRD
 JV6576
 JV6576.The horizontal coordinates were established by classical geodetic methods
 JV6576.and adjusted by the National Geodetic Survey in January 1992.
 JV6576
 JV6576.No horizontal observational check was made to the station.
 JV6576
 JV6576.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6576.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6576
 JV6576.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6576.GEOID18 height accuracy estimate available here.
 JV6576
 JV6576.Click photographs - Photos may exist for this station.
 JV6576
 JV6576.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6576
 JV6576. The following values were computed from the NAD 83(1991) position.
 JV6576
 JV6576;                    North         East     Units Scale Factor Converg.
 JV6576;SPC MD       -   168,580.085   414,849.497   MT  0.99996439   +0 06 28.3
 JV6576;SPC MD       -   553,083.16  1,361,052.06   sFT  0.99996439   +0 06 28.3
 JV6576;UTM  18      - 4,338,920.960   342,107.512   MT  0.99990697   -1 09 19.1
 JV6576
 JV6576!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6576!SPC MD       -   0.99998797  x   0.99996439  =   0.99995236
 JV6576!UTM  18      -   0.99998797  x   0.99990697  =   0.99989494
 JV6576
 JV6576_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4210738920(NAD 83)
 JV6576
 JV6576                          SUPERSEDED SURVEY CONTROL
 JV6576
 JV6576  NAD 83(1986)-  39 11 06.73047(N)    076 49 41.25864(W) AD(       ) 3
 JV6576  NGVD 29 (02/12/91)  109.2    (m)          358.     (f) VERT ANG       
 JV6576
 JV6576.Superseded values are not recommended for survey control.
 JV6576
 JV6576.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6576.See file dsdata.pdf to determine how the superseded data were derived.
 JV6576
 JV6576_MARKER: DZ = AZIMUTH MARK DISK
 JV6576_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6576_SP_SET: ROAD CURB
 JV6576_STAMPING: GUILFORD 1942 AZ 2 1980
 JV6576_MARK LOGO: NGS
 JV6576_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6576_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6576
 JV6576  HISTORY     - Date     Condition        Report By
 JV6576  HISTORY     - 1980     MONUMENTED       NGS
 JV6576  HISTORY     - 20210210 MARK NOT FOUND   PROFLN
 JV6576
 JV6576                          STATION DESCRIPTION
 JV6576
 JV6576'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 JV6576'THE STATION IS LOCATED ABOUT 9.65 KM (6.00 MI) NORTH OF LAUREL, 5.23
 JV6576'KM (3.25 MI) SOUTHEAST OF COLUMBIA AND 2.0 KM (1.25 MI) NORTHWEST OF
 JV6576'GUILFORD.
 JV6576'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 95 AND STATE
 JV6576'HIGHWAY 175 IN THE NORTHWEST PART OF WATERLOO, GO NORTHWEST ON STATE
 JV6576'HIGHWAY 175 FOR 1.21 KM (0.75 MI) TO STATE HIGHWAY 108.  CONTINUE
 JV6576'NORTHWEST ON STATE HIGHWAY 175 FOR 1.45 KM (0.90 MI) TO A SIDE ROAD
 JV6576'LEFT.  TURN LEFT AND GO SOUTHWEST ON SNOWDEN RIVER PARKWAY FOR 1.93 KM
 JV6576'(1.20 MI) TO A CROSSROADS. TURN RIGHT AND GO NORTHERLY ON OAKLAND MILL
 JV6576'ROAD FOR 0.8 KM (0.50 MI) TO THE MARK ON THE LEFT, ABOUT 100 M
 JV6576'(328.1 FT) NORTHWEST OF THE OAKLAND CHURCH OF CHRIST.
 JV6576'THE DISK IS SET IN A DRILL HOLE IN THE CURB WHICH IS FLUSH WITH THE
 JV6576'SURFACE.  IT IS 34.75 M (114.0 FT) NORTHWEST OF THE CENTER OF A ROAD
 JV6576'LEADING TO THE CHURCH, 21.64 M (71.0 FT) EAST-SOUTHEAST OF A MAIL BOX
 JV6576'MARKED 6752 OAKLAND MILL ROAD, 19.05 M (62.5 FT) EAST-SOUTHEAST OF A
 JV6576'POWERLINE POLE NUMBERED 68, 20.21 M (66.3 FT) SOUTHEAST OF A FIRE
 JV6576'HYDRANT AND 7.92 M (26.0 FT) SOUTHWEST OF THE CENTER OF OAKLAND MILL
 JV6576'ROAD.
 JV6576
 JV6576                          STATION RECOVERY (2021)
 JV6576
 JV6576'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV6576'THE CURB IN THE AREA WAS INSPECTED BUT THE MARK WAS NOT SEEN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1350 ***********************************************************************
 JV1350  DESIGNATION -  GUILFORD RM 4
 JV1350  PID         -  JV1350
 JV1350  STATE/COUNTY-  MD/HOWARD
 JV1350  COUNTRY     -  US
 JV1350  USGS QUAD   -  SAVAGE (2016)
 JV1350
 JV1350                         *CURRENT SURVEY CONTROL
 JV1350  ______________________________________________________________________
 JV1350* NAD 83(1986) POSITION- 39 10 35.80   (N) 076 49 52.94   (W)   HD_HELD1
 JV1350* NAVD 88 ORTHO HEIGHT -   122.288 (meters)      401.21  (feet) ADJUSTED
 JV1350  ______________________________________________________________________
 JV1350  GEOID HEIGHT    -        -32.246 (meters)                     GEOID18
 JV1350  DYNAMIC HEIGHT  -        122.223 (meters)      400.99  (feet) COMP
 JV1350  MODELED GRAVITY -    980,093.5   (mgal)                       NAVD 88
 JV1350
 JV1350  VERT ORDER      -  SECOND    CLASS 0
 JV1350
 JV1350.The horizontal coordinates were determined by differentially corrected
 JV1350.hand held GPS observations or other comparable positioning techniques
 JV1350.and have an estimated accuracy of +/- 3 meters.
 JV1350
 JV1350.The orthometric height was determined by differential leveling and
 JV1350.adjusted by the NATIONAL GEODETIC SURVEY
 JV1350.in June 1991.
 JV1350
 JV1350.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1350.GEOID18 height accuracy estimate available here.
 JV1350
 JV1350.Click photographs - Photos may exist for this station.
 JV1350
 JV1350.The dynamic height is computed by dividing the NAVD 88
 JV1350.geopotential number by the normal gravity value computed on the
 JV1350.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1350.degrees latitude (g = 980.6199 gals.).
 JV1350
 JV1350.The modeled gravity was interpolated from observed gravity values.
 JV1350
 JV1350;                    North         East    Units  Estimated Accuracy
 JV1350;SPC MD       -   167,625.7     414,570.7     MT  (+/- 3 meters HH1 GPS) 
 JV1350
 JV1350_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4180737972(NAD 83)
 JV1350
 JV1350                          SUPERSEDED SURVEY CONTROL
 JV1350
 JV1350  NGVD 29 (11/26/84)  122.501  (m)          401.91   (f) ADJUSTED    2 0
 JV1350
 JV1350.Superseded values are not recommended for survey control.
 JV1350
 JV1350.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1350.See file dsdata.pdf to determine how the superseded data were derived.
 JV1350
 JV1350_MARKER: DR = REFERENCE MARK DISK
 JV1350_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1350_STAMPING: GUILFORD NO 4 1942
 JV1350_MARK LOGO: CGS
 JV1350_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1350+STABILITY: SURFACE MOTION
 JV1350
 JV1350  HISTORY     - Date     Condition        Report By
 JV1350  HISTORY     - 1957     MONUMENTED       CGS
 JV1350  HISTORY     - 1966     GOOD             MDSRC
 JV1350
 JV1350                          STATION DESCRIPTION
 JV1350
 JV1350'DESCRIBED BY MD STATE ROADS COMM 1966
 JV1350'5 MI N FROM LAUREL.
 JV1350'FROM THE INTERSECTION OF U.S. HIGHWAY 1 AND STATE HIGHWAY 32 GO
 JV1350'NORTHWESTERLY ON STATE HIGHWAY 32 FOR 1.8 MILES TO FORKS.  KEEP
 JV1350'RIGHT FORK FOR 1.0 MILES TO REVERSE FORK.  TURN SHARP LEFT AND
 JV1350'GO 0.15 MILES ON BERGER ROAD TO MARK ON RIGHT.  IT IS 23.0 FEET
 JV1350'NORTH OF THE CENTERLINE OF BERGER ROAD AND UNDER UTILITY LINES,
 JV1350'140.8 FEET WEST NORTHWEST OF THE TRIANGULATION STATION.  A
 JV1350'STANDARD REFERENCE MARK DISK SET IN THE TOP OF A CONCRETE POST
 JV1350'AND PROJECTS 3 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4052 ***********************************************************************
 JV4052  DESIGNATION -  GUILFORD RM 5
 JV4052  PID         -  JV4052
 JV4052  STATE/COUNTY-  MD/HOWARD
 JV4052  COUNTRY     -  US
 JV4052  USGS QUAD   -  SAVAGE (2016)
 JV4052
 JV4052                         *CURRENT SURVEY CONTROL
 JV4052  ______________________________________________________________________
 JV4052* NAD 83(1991) POSITION- 39 10 36.10219(N) 076 49 50.47970(W)   ADJUSTED
 JV4052* NAVD 88 ORTHO HEIGHT -   122.36  (+/-2cm)      401.4   (feet) VERTCON3
 JV4052  ______________________________________________________________________
 JV4052  GEOID HEIGHT    -        -32.247 (meters)                     GEOID18
 JV4052  LAPLACE CORR    -         -3.92  (seconds)                    DEFLEC18
 JV4052  HORZ ORDER      -  THIRD
 JV4052  VERT ORDER      -  THIRD (See Below)
 JV4052
 JV4052.The horizontal coordinates were established by classical geodetic methods
 JV4052.and adjusted by the National Geodetic Survey in January 1992.
 JV4052
 JV4052.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4052.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4052
 JV4052.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4052.GEOID18 height accuracy estimate available here.
 JV4052
 JV4052.The vertical order pertains to the NGVD 29 superseded value.
 JV4052
 JV4052.Click photographs - Photos may exist for this station.
 JV4052
 JV4052.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4052
 JV4052. The following values were computed from the NAD 83(1991) position.
 JV4052
 JV4052;                    North         East     Units Scale Factor Converg.
 JV4052;SPC MD       -   167,635.118   414,629.730   MT  0.99996360   +0 06 22.6
 JV4052;SPC MD       -   549,982.88  1,360,331.04   sFT  0.99996360   +0 06 22.6
 JV4052;UTM  18      - 4,337,981.120   341,866.983   MT  0.99990790   -1 09 24.2
 JV4052
 JV4052!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4052!SPC MD       -   0.99998586  x   0.99996360  =   0.99994946
 JV4052!UTM  18      -   0.99998586  x   0.99990790  =   0.99989376
 JV4052
 JV4052_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4186637981(NAD 83)
 JV4052
 JV4052                          SUPERSEDED SURVEY CONTROL
 JV4052
 JV4052  NAD 83(1986)-  39 10 36.10040(N)    076 49 50.48914(W) AD(       ) 3
 JV4052  NGVD 29 (??/??/??)  122.58   (m)          402.2    (f) RESET       3  
 JV4052  NGVD 29             122.68   (m)          402.5    (f) LEVELING    3  
 JV4052
 JV4052.Superseded values are not recommended for survey control.
 JV4052
 JV4052.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4052.See file dsdata.pdf to determine how the superseded data were derived.
 JV4052
 JV4052_MARKER: DR = REFERENCE MARK DISK
 JV4052_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4052_STAMPING: GUILFORD 1942 NO 5 1980
 JV4052_MARK LOGO: NGS
 JV4052_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4052_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4052+STABILITY: SURFACE MOTION
 JV4052
 JV4052  HISTORY     - Date     Condition        Report By
 JV4052  HISTORY     - 1980     MONUMENTED       NGS
 JV4052  HISTORY     - 20080216 MARK NOT FOUND   GEOCAC
 JV4052  HISTORY     - 20210210 MARK NOT FOUND   PROFLN
 JV4052
 JV4052                          STATION DESCRIPTION
 JV4052
 JV4052'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 JV4052'5.0 MILES NORTH FROM LAUREL.
 JV4052'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 95 AND STATE
 JV4052'HIGHWAY 175 IN WATERLOO, GO NORTHWEST ON HIGHWAY 175 FOR 1.6 MILES TO
 JV4052'A SIDE ROAD LEFT. TURN LEFT AND GO SOUTHWEST ON SNOWDEN RIVER PARKWAY
 JV4052'FOR 1.2 MILES TO A CROSSROADS. TURN LEFT AND GO SOUTH ON OAKLAND MILL
 JV4052'ROAD FOR 0.2 MILE TO A SIDE ROAD RIGHT. TURN RIGHT AND GO WEST ON
 JV4052'BERGER ROAD FOR 0.15 MILE TO THE MARK ON THE RIGHT, IT IS 124 FEET
 JV4052'EAST OF A POWERLINE POLE NUMBERED 157990 86, 46 FEET EAST-NORTHEAST OF
 JV4052'A FIRE PLUG AND 25.5 FEET SOUTH OF THE CENTER OF BERGER ROAD.
 JV4052
 JV4052                          STATION RECOVERY (2008)
 JV4052
 JV4052'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JV4052'ROAD HAS BEEN WIDENED AND AREA EXTENSIVELY DEVELOPED - UNABLE TO
 JV4052'LOCATE WITH METAL DETECTOR.
 JV4052
 JV4052                          STATION RECOVERY (2021)
 JV4052
 JV4052'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV4052'THE MARK WAS PRETTY MUCH CONFIRMED DESTROYED BY TRAVERSE FROM A NEARBY
 JV4052'OPUS-RS POINT AND PROBING DOWN TO 18 INCHES (46 CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4051 ***********************************************************************
 JV4051  DESIGNATION -  GUILFORD RM 6
 JV4051  PID         -  JV4051
 JV4051  STATE/COUNTY-  MD/HOWARD
 JV4051  COUNTRY     -  US
 JV4051  USGS QUAD   -  SAVAGE (2016)
 JV4051
 JV4051                         *CURRENT SURVEY CONTROL
 JV4051  ______________________________________________________________________
 JV4051* NAD 83(1991) POSITION- 39 10 35.80009(N) 076 49 52.94407(W)   ADJUSTED
 JV4051* NAVD 88 ORTHO HEIGHT -   122.20  (+/-2cm)      400.9   (feet) VERTCON3
 JV4051  ______________________________________________________________________
 JV4051  GEOID HEIGHT    -        -32.246 (meters)                     GEOID18
 JV4051  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 JV4051  HORZ ORDER      -  THIRD
 JV4051  VERT ORDER      -  THIRD (See Below)
 JV4051
 JV4051.The horizontal coordinates were established by classical geodetic methods
 JV4051.and adjusted by the National Geodetic Survey in January 1992.
 JV4051
 JV4051.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4051.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4051
 JV4051.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4051.GEOID18 height accuracy estimate available here.
 JV4051
 JV4051.The vertical order pertains to the NGVD 29 superseded value.
 JV4051
 JV4051.Click photographs - Photos may exist for this station.
 JV4051
 JV4051.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4051
 JV4051. The following values were computed from the NAD 83(1991) position.
 JV4051
 JV4051;                    North         East     Units Scale Factor Converg.
 JV4051;SPC MD       -   167,625.692   414,570.597   MT  0.99996359   +0 06 21.0
 JV4051;SPC MD       -   549,951.96  1,360,137.03   sFT  0.99996359   +0 06 21.0
 JV4051;UTM  18      - 4,337,973.000   341,807.660   MT  0.99990814   -1 09 25.7
 JV4051
 JV4051!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4051!SPC MD       -   0.99998589  x   0.99996359  =   0.99994948
 JV4051!UTM  18      -   0.99998589  x   0.99990814  =   0.99989403
 JV4051
 JV4051_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4180737973(NAD 83)
 JV4051
 JV4051                          SUPERSEDED SURVEY CONTROL
 JV4051
 JV4051  NAD 83(1986)-  39 10 35.79832(N)    076 49 52.95352(W) AD(       ) 3
 JV4051  NGVD 29 (??/??/??)  122.42   (m)          401.6    (f) RESET       3  
 JV4051  NGVD 29             122.45   (m)          401.7    (f) LEVELING    3  
 JV4051
 JV4051.Superseded values are not recommended for survey control.
 JV4051
 JV4051.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4051.See file dsdata.pdf to determine how the superseded data were derived.
 JV4051
 JV4051_MARKER: DR = REFERENCE MARK DISK
 JV4051_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4051_STAMPING: GUILFORD 1942 NO 6 1980
 JV4051_MARK LOGO: NGS
 JV4051_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4051_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4051+STABILITY: SURFACE MOTION
 JV4051
 JV4051  HISTORY     - Date     Condition        Report By
 JV4051  HISTORY     - 1980     MONUMENTED       NGS
 JV4051  HISTORY     - 20080216 MARK NOT FOUND   GEOCAC
 JV4051  HISTORY     - 20210210 MARK NOT FOUND   PROFLN
 JV4051
 JV4051                          STATION DESCRIPTION
 JV4051
 JV4051'DESCRIBED BY NATIONAL GEODETIC SURVEY 1980
 JV4051'5.0 MILES NORTH FROM LAUREL.
 JV4051'TO REACH FROM THE INTERSECTION OF INTERSTATE HIGHWAY 95 AND STATE
 JV4051'HIGHWAY 175 AT WATERLOO, GO NORTHWEST ON STATE HIGHWAY 175 FOR 1.6
 JV4051'MILES TO A SIDE ROAD LEFT. TURN LEFT AND GO SOUTHWEST ON SNOWDEN
 JV4051'RIVER PARKWAY FOR 1.2 MILES TO A CROSSROADS. TURN LEFT AND GO SOUTH ON
 JV4051'OAKLAND MILL ROAD FOR 0.2 MILE TO A SIDE ROAD RIGHT. TURN RIGHT AND GO
 JV4051'WEST ON BERGER ROAD FOR 0.2 MILE TO THE MARK ON THE RIGHT, IT IS 72
 JV4051'FEET WEST OF A POWERLINE POLE NUMBERED 157990 86, 38 FEET NORTH-NORTH
 JV4051'EAST OF A MAIL BOX MARKED 9221 BERGER ROAD AND 23 FEET NORTH OF THE
 JV4051'CENTER OF BERGER ROAD.
 JV4051
 JV4051                          STATION RECOVERY (2008)
 JV4051
 JV4051'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 JV4051'ROAD HAS BEEN WIDENED AND AREA EXTENSIVELY DEVELOPED - UNABLE TO
 JV4051'LOCATE WITH METAL DETECTOR.
 JV4051
 JV4051                          STATION RECOVERY (2021)
 JV4051
 JV4051'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV4051'THE MARK WAS PRETTY MUCH CONFIRMED DESTROYED BY TRAVERSE FROM A NEARBY
 JV4051'OPUS-RS POINT AND PROBING DOWN TO 18 INCHES (46 CM).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6863 ***********************************************************************
 HV6863  DESIGNATION -  GUITHER 1908
 HV6863  PID         -  HV6863
 HV6863  STATE/COUNTY-  MD/ST MARYS
 HV6863  COUNTRY     -  US
 HV6863  USGS QUAD   -  PINEY POINT (2016)
 HV6863
 HV6863                         *CURRENT SURVEY CONTROL
 HV6863  ______________________________________________________________________
 HV6863* NAD 83(1993) POSITION- 38 09 44.00605(N) 076 31 04.69762(W)   ADJUSTED
 HV6863* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6863  ______________________________________________________________________
 HV6863  GEOID HEIGHT    -        -34.522 (meters)                     GEOID18
 HV6863  LAPLACE CORR    -         -5.97  (seconds)                    DEFLEC18
 HV6863  HORZ ORDER      -  THIRD
 HV6863
 HV6863.The horizontal coordinates were established by classical geodetic methods
 HV6863.and adjusted by the National Geodetic Survey in November 1994.
 HV6863
 HV6863.The orthometric height was scaled from a topographic map.
 HV6863
 HV6863.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6863.GEOID18 height accuracy estimate available here.
 HV6863
 HV6863.Click photographs - Photos may exist for this station.
 HV6863
 HV6863.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6863
 HV6863. The following values were computed from the NAD 83(1993) position.
 HV6863
 HV6863;                    North         East     Units Scale Factor Converg.
 HV6863;SPC MD       -    55,120.926   442,245.246   MT  1.00002682   +0 18 09.1
 HV6863;SPC MD       -   180,842.57  1,450,932.94   sFT  1.00002682   +0 18 09.1
 HV6863;SPC VA N     - 2,056,880.756 3,673,685.236   MT  0.99997975   +1 14 13.3
 HV6863;SPC VA N     - 6,748,282.95 12,052,748.98   sFT  0.99997975   +1 14 13.3
 HV6863;SPC VA S     - 1,204,795.915 3,673,696.701   MT  1.00004154   +1 12 10.6
 HV6863;SPC VA S     - 3,952,734.60 12,052,786.59   sFT  1.00004154   +1 12 10.6
 HV6863;UTM  18      - 4,224,902.970   367,016.556   MT  0.99981780   -0 56 17.1
 HV6863
 HV6863!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6863!SPC MD       -   1.00000546  x   1.00002682  =   1.00003228
 HV6863!SPC VA N     -   1.00000546  x   0.99997975  =   0.99998521
 HV6863!SPC VA S     -   1.00000546  x   1.00004154  =   1.00004700
 HV6863!UTM  18      -   1.00000546  x   0.99981780  =   0.99982326
 HV6863
 HV6863:                Primary Azimuth Mark                     Grid Az
 HV6863:SPC MD       -  WALL 1908                                146 02 05.3
 HV6863:SPC VA N     -  WALL 1908                                145 06 01.1
 HV6863:SPC VA S     -  WALL 1908                                145 08 03.8
 HV6863:UTM  18      -  WALL 1908                                147 16 31.5
 HV6863
 HV6863_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6701624902(NAD 83)
 HV6863
 HV6863|---------------------------------------------------------------------|
 HV6863| PID    Reference Object                     Distance      Geod. Az  |
 HV6863|                                                           dddmmss.s |
 HV6863| HV6862 CHADWICK 1908                       314.376 METERS 05850     |
 HV6863| HV6866 WALL 1908                           APPROX. 0.8 KM 1462014.4 |
 HV6863|---------------------------------------------------------------------|
 HV6863
 HV6863                          SUPERSEDED SURVEY CONTROL
 HV6863
 HV6863  NAD 83(1991)-  38 09 44.00502(N)    076 31 04.70098(W) AD(       ) 3
 HV6863  NAD 83(1986)-  38 09 44.00610(N)    076 31 04.71394(W) AD(       ) 3
 HV6863  NAD 27      -  38 09 43.61800(N)    076 31 05.97300(W) AD(       ) 3
 HV6863  USSD        -  38 09 44.00600(N)    076 31 05.68400(W) AD(       ) 3
 HV6863
 HV6863.Superseded values are not recommended for survey control.
 HV6863
 HV6863.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6863.See file dsdata.pdf to determine how the superseded data were derived.
 HV6863
 HV6863_MARKER: H = DRILL HOLE
 HV6863_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6863_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6863+STABILITY: SURFACE MOTION
 HV6863
 HV6863  HISTORY     - Date     Condition        Report By
 HV6863  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6863  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6863  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6863
 HV6863                          STATION DESCRIPTION
 HV6863
 HV6863'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6863'STATION IS ON THE SOUTHWESTERN SHORE OF UPPER ST. GEORGE RIVER,
 HV6863'ABOUT 2 MILES NW OF ST. GEORGE ISLAND STRAITS, IN A GRASSY FIELD,
 HV6863'ABOUT 2 FEET ABOVE HIGH WATER, DIRECTLY OPPOSITE CHADWICK
 HV6863'FARMHOUSE, 12 YARDS NW OF SHORE, 18 YARDS S OF SHORE, AND 35
 HV6863'YARDS SW OF EXTREME END OF POINT.
 HV6863'
 HV6863'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6863'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6863'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6863'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6863'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6863'FOLLOWS--CHIMNEY OF SMALL HOUSE, 1/2 MILE, S 85 DEG 41 MIN W.
 HV6863'CHIMNEY OF 1 1/2-STORY HOUSE, 1-1/4 MILES, N 14 DEG 50 MIN W.
 HV6863'BETWEEN TWO CHIMNEYS OF HOUSE ON CHADWICK FARM, 1/4 MILE, N 44 DEG
 HV6863'6 MIN E.  NAIL IN BLAZE IN CEDAR TREE, 7.05 METERS (23.13 FEET),
 HV6863'S 86 DEG 33 MIN E.  NAIL IN BLAZE IN CEDAR TREE, 8.92 METERS
 HV6863'(29.27 FEET), S 57 DEG 38 MIN E.  CHIMNEY ON WALL HOUSE, 7/8 MILE,
 HV6863'S 40 DEG 34 MIN E.  NE PEAK OF BARN, 3/4 MILE, S 34 DEG 20 MIN E.
 HV6863'NEAR PEAK OF BARN, 1/4 MILE, S 16 DEG 59 MIN E.  PEAK OF BARN, 1/4
 HV6863'MILE, S 0 DEG 58 MIN E.
 HV6863
 HV6863                          STATION RECOVERY (1942)
 HV6863
 HV6863'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6863'THIS STATION WAS THOROUGHLY SEARCHED FOR.  ACCORDING TO A LOCAL
 HV6863'RESIDENT A HOUSE HAS BEEN BUILT OVER THIS STATION.  DISTANCES
 HV6863'MEASURED FROM THE SHORE LINE ALSO INDICATE THAT THIS STATION IS
 HV6863'LOCATED UNDER THIS HOUSE.
 HV6863
 HV6863                          STATION RECOVERY (1958)
 HV6863
 HV6863'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6863'A THOROUGH SEARCH WAS MADE FOR THIS STATION, WITHOUT RESULTS.  NO
 HV6863'FURTHER CONFIRMATION COULD BE FOUND OF THE 1942 DESCRIPTION,
 HV6863'ALTHOUGH, SHORELINE MEASUREMENTS DO PLACE THE STATION UNDER THE HOUSE.
 HV6863'
 HV6863'THIS STATION SHOULD BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1496 ***********************************************************************
 HU1496  DESIGNATION -  GULL
 HU1496  PID         -  HU1496
 HU1496  STATE/COUNTY-  MD/WORCESTER
 HU1496  COUNTRY     -  US
 HU1496  USGS QUAD   -  OCEAN CITY (2016)
 HU1496
 HU1496                         *CURRENT SURVEY CONTROL
 HU1496  ______________________________________________________________________
 HU1496* NAD 83(1991) POSITION- 38 18 44.87125(N) 075 05 55.64387(W)   ADJUSTED
 HU1496* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1496  ______________________________________________________________________
 HU1496  GEOID HEIGHT    -        -36.081 (meters)                     GEOID18
 HU1496  LAPLACE CORR    -         -0.49  (seconds)                    DEFLEC18
 HU1496  HORZ ORDER      -  THIRD
 HU1496
 HU1496.The horizontal coordinates were established by classical geodetic methods
 HU1496.and adjusted by the National Geodetic Survey in January 1992.
 HU1496
 HU1496.The orthometric height was scaled from a topographic map.
 HU1496
 HU1496.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1496.GEOID18 height accuracy estimate available here.
 HU1496
 HU1496.Click photographs - Photos may exist for this station.
 HU1496
 HU1496.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1496
 HU1496. The following values were computed from the NAD 83(1991) position.
 HU1496
 HU1496;                    North         East     Units Scale Factor Converg.
 HU1496;SPC MD       -    73,417.820   566,264.560   MT  0.99999785   +1 11 35.8
 HU1496;SPC MD       -   240,871.63  1,857,819.64   sFT  0.99999785   +1 11 35.8
 HU1496;UTM  18      - 4,240,489.116   491,363.435   MT  0.99960092   -0 03 40.5
 HU1496
 HU1496!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1496!SPC MD       -   1.00000570  x   0.99999785  =   1.00000355
 HU1496!UTM  18      -   1.00000570  x   0.99960092  =   0.99960662
 HU1496
 HU1496:                Primary Azimuth Mark                     Grid Az
 HU1496:SPC MD       -  SEASIDE                                  196 10 19.7
 HU1496:UTM  18      -  SEASIDE                                  197 25 36.0
 HU1496
 HU1496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9136340489(NAD 83)
 HU1496
 HU1496|---------------------------------------------------------------------|
 HU1496| PID    Reference Object                     Distance      Geod. Az  |
 HU1496|                                                           dddmmss.s |
 HU1496| HU1504 SEASIDE                             APPROX. 1.5 KM 1972155.5 |
 HU1496| DC7345 GULL RM                               7.680 METERS 26856     |
 HU1496| HU1500 BUFFINGTON WINDMILL                 APPROX. 1.3 KM 2854126.3 |
 HU1496|---------------------------------------------------------------------|
 HU1496
 HU1496                          SUPERSEDED SURVEY CONTROL
 HU1496
 HU1496  NAD 83(1986)-  38 18 44.85391(N)    075 05 55.67382(W) AD(       ) 3
 HU1496  NAD 27      -  38 18 44.44372(N)    075 05 57.00749(W) AD(       ) 3
 HU1496  USSD        -  38 18 44.61700(N)    075 05 56.78700(W) AD(       ) 3
 HU1496
 HU1496.Superseded values are not recommended for survey control.
 HU1496
 HU1496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1496.See file dsdata.pdf to determine how the superseded data were derived.
 HU1496
 HU1496_MARKER: N = NAIL
 HU1496_SETTING: 0 = UNSPECIFIED SETTING
 HU1496
 HU1496  HISTORY     - Date     Condition        Report By
 HU1496  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1496  HISTORY     - 1932     MARK NOT FOUND   CGS
 HU1496  HISTORY     - 1934     MARK NOT FOUND   CGS
 HU1496  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1496  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU1496
 HU1496                          STATION DESCRIPTION
 HU1496
 HU1496'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1496'ON THE EASTERN SHORE OF SINEPUXENT BAY, NEARLY HALF-WAY BETWEEN BAY
 HU1496'AND OCEAN, AND ABOUT 1 MILE SSW OF OCEAN CITY, ON SAND AND GRASS
 HU1496'BEACH LAND, ABOUT 2 FEET ABOVE HIGH WATER, 130 YARDS W OF LIFE
 HU1496'SAVING SERVICE TELEPHONE LINE, 200 YARDS W OF TOP OF SAND DUNES
 HU1496'AND 65 YARDS S OF A SQUARE MARBLE PILLAR PROJECTING ABOVE GROUND
 HU1496'IN MIDDLE OF A BARE WASHED SPACE.  STATION MARKED BY NAIL IN
 HU1496'STUB FLUSH WITH SURFACE OF SAND AND GRASS.  REFERENCE MARK IS
 HU1496'CENTER OF STANDARD CEMENT MONUMENT OF THE MARYLAND SHELL FISH
 HU1496'SURVEY WHICH PROJECTS 3 TO 5 INCHES ABOVE SURFACE
 HU1496'WHICH IS MADE OF CONCRETE 2
 HU1496'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1496'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1496'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1496'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1496'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1496'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1496'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1496'THE LOCATION OF THE STATION.
 HU1496'STATION IS SET ABOUT ON LINE WITH THE LEFT END OF
 HU1496'WOODS BELOW BUFFINGTONS HOUSE, BEING 7.685 METERS (25.21
 HU1496'FEET) FROM THE STATION S 88 DEG 57 MIN W.  OTHER DISTANCES
 HU1496'AND AZIMUTHS ARE AS FOLLOWS--NEAR CHIMNEY OF KELLEYS HOUSE,
 HU1496'1-1/4 MILES, S 56 DEG 59 MIN W.  LEFT CHIMNEY ON BAKERS HOUSE, 1-1/8
 HU1496'MILES, S 82 DEG 00 MIN W.  BAKERS WINDMILL, 1 MILE S 83 DEG 09 MIN W.
 HU1496'CHIMNEY ON BUFFINGTONS HOUSE, 3/4 MILE, N 74 DEG 23 MIN W.  CHIMNEY ON
 HU1496'NEAR SIDE OF ROOF OF GRAY HOUSE, 1-1/2 MILES, N 54 DEG 58 MIN W.
 HU1496'NEAR CHIMNEY OF HARMONS HOUSE, 1-1/4 MILES, N 21 DEG 52 MIN W.
 HU1496'NEAR END OF ROOF OF TABORS HOUSE ON TABOR HILL, 1 MILE, N 7 DEG
 HU1496'37 MIN W.  POWER-HOUSE CHIMNEY, 1-3/8 MILES, N 27 DEG 49 MIN E.
 HU1496'FLAGSTAFF ON SQUARE ROOF OF ATLANTIC HOTEL, 1-1/4 MILES, N 28 DEG
 HU1496'49 MIN E.
 HU1496
 HU1496                          STATION RECOVERY (1932)
 HU1496
 HU1496'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (IER)
 HU1496'STATION LOST BUT REFERENCE MARK FOUND IN PERFECT CONDITION.  TO
 HU1496'FIND STATION FROM OCEAN CITY, GO DOWN THE BEACH TO THE N END OF
 HU1496'A ROW OF PILES DRIVEN IN THE SAND (PROBABLY INTENDED FOR USE AS A
 HU1496'SEA WALL), TURN WESTERLY ABOUT 50 YARDS TO THE REMAINS OF AN OLD
 HU1496'WAGON TRAIL, THEN TURN N (TOWARDS OCEAN CITY), ABOUT 50 YARDS AND
 HU1496'MARK IS HERE.
 HU1496'
 HU1496'STATION IS ON THE EASTERN SHORE OF SINEPUXENT BAY, ABOUT HALF-WAY
 HU1496'BETWEEN BAY AND OCEAN ABOUT 1 MILE SSW OF OCEAN CITY, ON SAND AND
 HU1496'GRASS LAND ABOUT 2 FEET ABOVE HIGH WATER.
 HU1496
 HU1496                          STATION RECOVERY (1934)
 HU1496
 HU1496'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1496'STATION AND REFERENCE MARKS NOT RECOVERED.  PREVIOUS DESCRIPTIONS
 HU1496'CARRIED OUT AND LARGE AREA WAS DUG OVER BUT MARKS COULD NOT BE
 HU1496'FOUND.  SAND BEACH IN THIS LOCALITY HAS BEEN WASHED OUT
 HU1496'CONSIDERABLY.
 HU1496
 HU1496                          STATION RECOVERY (1962)
 HU1496
 HU1496'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1496'THIS STATION NOW PLOTS 450 FEET OFFSHORE FROM THE MEAN HIGH WATER
 HU1496'LINE.  IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED AS
 HU1496'DESTROYED.
 HU1496
 HU1496                          STATION RECOVERY (2003)
 HU1496
 HU1496'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU1496'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5077 ***********************************************************************
 JV5077  DESIGNATION -  GUM
 JV5077  PID         -  JV5077
 JV5077  STATE/COUNTY-  MD/KENT
 JV5077  COUNTRY     -  US
 JV5077  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5077
 JV5077                         *CURRENT SURVEY CONTROL
 JV5077  ______________________________________________________________________
 JV5077* NAD 83(1991) POSITION- 39 04 31.84483(N) 076 12 16.38169(W)   ADJUSTED
 JV5077* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5077  ______________________________________________________________________
 JV5077  GEOID HEIGHT    -        -33.513 (meters)                     GEOID18
 JV5077  LAPLACE CORR    -         -2.23  (seconds)                    DEFLEC18
 JV5077  HORZ ORDER      -  SECOND
 JV5077
 JV5077.The horizontal coordinates were established by classical geodetic methods
 JV5077.and adjusted by the National Geodetic Survey in January 1992.
 JV5077
 JV5077.The orthometric height was scaled from a topographic map.
 JV5077
 JV5077.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5077.GEOID18 height accuracy estimate available here.
 JV5077
 JV5077.Click photographs - Photos may exist for this station.
 JV5077
 JV5077.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5077
 JV5077. The following values were computed from the NAD 83(1991) position.
 JV5077
 JV5077;                    North         East     Units Scale Factor Converg.
 JV5077;SPC MD       -   156,688.806   468,829.723   MT  0.99995590   +0 29 57.3
 JV5077;SPC MD       -   514,069.86  1,538,152.18   sFT  0.99995590   +0 29 57.3
 JV5077;UTM  18      - 4,325,846.784   395,805.226   MT  0.99973368   -0 45 33.7
 JV5077
 JV5077!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5077!SPC MD       -   1.00000530  x   0.99995590  =   0.99996120
 JV5077!UTM  18      -   1.00000530  x   0.99973368  =   0.99973898
 JV5077
 JV5077:                Primary Azimuth Mark                     Grid Az
 JV5077:SPC MD       -  PIONEER PT FARMS E BLACK TK              096 11 18.5
 JV5077:UTM  18      -  PIONEER PT FARMS E BLACK TK              097 26 49.5
 JV5077
 JV5077_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9580525846(NAD 83)
 JV5077
 JV5077|---------------------------------------------------------------------|
 JV5077| PID    Reference Object                     Distance      Geod. Az  |
 JV5077|                                                           dddmmss.s |
 JV5077| JV5028 PIONEER PT FARMS E BLACK TK         APPROX. 6.1 KM 0964115.8 |
 JV5077| JV5034 PIONEER PT FARMS W BLACK TK         APPROX. 4.8 KM 1095701.8 |
 JV5077| CA9474 GUM RM 1                             24.245 METERS 27415     |
 JV5077| CA9475 GUM RM 2                             13.820 METERS 32444     |
 JV5077|---------------------------------------------------------------------|
 JV5077
 JV5077                          SUPERSEDED SURVEY CONTROL
 JV5077
 JV5077  NAD 83(1986)-  39 04 31.83909(N)    076 12 16.39307(W) AD(       ) 2
 JV5077  NAD 27      -  39 04 31.44100(N)    076 12 17.56000(W) AD(       ) 2
 JV5077
 JV5077.Superseded values are not recommended for survey control.
 JV5077
 JV5077.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5077.See file dsdata.pdf to determine how the superseded data were derived.
 JV5077
 JV5077_MARKER: DS = TRIANGULATION STATION DISK
 JV5077_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5077_STAMPING: GUM 1938
 JV5077_MARK LOGO: CGS
 JV5077_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5077+STABILITY: SURFACE MOTION
 JV5077
 JV5077  HISTORY     - Date     Condition        Report By
 JV5077  HISTORY     - 1938     MONUMENTED       CGS
 JV5077  HISTORY     - 1961     SEE DESCRIPTION  CGS
 JV5077
 JV5077                          STATION DESCRIPTION
 JV5077
 JV5077'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5077'STATION IS LOCATED ON GUM POINT ON EASTERN NECK ON THE W SHORE
 JV5077'OF CHESTER RIVER.  STATION IS 10 METERS NW OF HIGH-WATER LINE
 JV5077'AT POINT AT THE N END OF A SMALL BAY.
 JV5077'
 JV5077'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5077'DISKS SET IN CONCRETE.
 JV5077'
 JV5077'REFERENCE MARK NO.1 IS W OF STATION IN GROUP OF SMALL PINES AND
 JV5077'2.7 METERS SSE OF 7-INCH PINE.
 JV5077'
 JV5077'REFERENCE MARK NO.2 IS NW OF STATION AT E EDGE OF PINES AND
 JV5077'1.7 METERS NE OF MOST EASTERLY TREE.
 JV5077'
 JV5077'STATION IS REACHED FROM ROCK HALL BY GOING S ON EASTERN NECK
 JV5077'ROAD 3.3 MILES TO SIGN READING NAPLEY GREEN, TURN LEFT ON GRAVEL
 JV5077'ROAD GO 0.3 MILE TO WHITE FENCE AND GATE, CONTINUE AHEAD FOR 0.5
 JV5077'MILE TO T-INTERSECTION, TURN RIGHT AND THEN LEFT ON TRAIL ROAD
 JV5077'BORDERING TREES ON RIGHT, GO 0.5 MILE THROUGH GATE (OVERGROWN
 JV5077'WITH BRUSH) CONTINUE AHEAD 0.9 MILE, TURN LEFT AND PROCEED TO
 JV5077'A TWO-STORY HOUSE, GO ABOUT 150 YARDS E THROUGH LANE CUT IN
 JV5077'BRUSH TO RIVERS EDGE, STATION IS ABOUT 45 YARDS E OF THIS POINT
 JV5077'AND JUST E OF SMALL GROWTH OF PINES.
 JV5077
 JV5077                          STATION RECOVERY (1961)
 JV5077
 JV5077'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5077'STATION MARK AND REFERENCE MARK NO.2 HAVE BEEN DESTROYED BY
 JV5077'EROSION.  REFERENCE MARK NO.1 WAS RECOVERED IN GOOD CONDITION.  IT
 JV5077'IS NOW 5 FT. FROM M.H.W.L., AND PROJECTS 1 INCH.  A 2X6 ABOUT
 JV5077'6 FT. LONG WAS PLACED BESIDE THE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1693 ***********************************************************************
 HU1693  DESIGNATION -  GUMBORO
 HU1693  PID         -  HU1693
 HU1693  STATE/COUNTY-  MD/WICOMICO
 HU1693  COUNTRY     -  US
 HU1693  USGS QUAD   -  PITTSVILLE (2016)
 HU1693
 HU1693                         *CURRENT SURVEY CONTROL
 HU1693  ______________________________________________________________________
 HU1693* NAD 83(1991) POSITION- 38 27 07.51884(N) 075 23 37.15301(W)   ADJUSTED
 HU1693* NAVD 88 ORTHO HEIGHT -    13.783 (meters)       45.22  (feet) ADJUSTED
 HU1693  ______________________________________________________________________
 HU1693  GEOID HEIGHT    -        -35.828 (meters)                     GEOID18
 HU1693  LAPLACE CORR    -         -0.87  (seconds)                    DEFLEC18
 HU1693  DYNAMIC HEIGHT  -         13.774 (meters)       45.19  (feet) COMP
 HU1693  MODELED GRAVITY -    980,013.0   (mgal)                       NAVD 88
 HU1693
 HU1693  HORZ ORDER      -  SECOND
 HU1693  VERT ORDER      -  SECOND    CLASS I
 HU1693
 HU1693.The horizontal coordinates were established by classical geodetic methods
 HU1693.and adjusted by the National Geodetic Survey in January 1992.
 HU1693
 HU1693.The orthometric height was determined by differential leveling and
 HU1693.adjusted by the NATIONAL GEODETIC SURVEY
 HU1693.in June 1991.
 HU1693
 HU1693.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1693.GEOID18 height accuracy estimate available here.
 HU1693
 HU1693.Click photographs - Photos may exist for this station.
 HU1693
 HU1693.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1693
 HU1693.The dynamic height is computed by dividing the NAVD 88
 HU1693.geopotential number by the normal gravity value computed on the
 HU1693.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1693.degrees latitude (g = 980.6199 gals.).
 HU1693
 HU1693.The modeled gravity was interpolated from observed gravity values.
 HU1693
 HU1693. The following values were computed from the NAD 83(1991) position.
 HU1693
 HU1693;                    North         East     Units Scale Factor Converg.
 HU1693;SPC MD       -    88,418.641   540,208.354   MT  0.99997702   +1 00 29.5
 HU1693;SPC MD       -   290,086.82  1,772,333.57   sFT  0.99997702   +1 00 29.5
 HU1693;UTM  18      - 4,256,050.499   465,651.454   MT  0.99961453   -0 14 41.3
 HU1693
 HU1693!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1693!SPC MD       -   1.00000346  x   0.99997702  =   0.99998048
 HU1693!UTM  18      -   1.00000346  x   0.99961453  =   0.99961799
 HU1693
 HU1693:                Primary Azimuth Mark                     Grid Az
 HU1693:SPC MD       -  NORTH FORK                               088 59 32.7
 HU1693:UTM  18      -  NORTH FORK                               090 14 43.5
 HU1693
 HU1693_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6565156050(NAD 83)
 HU1693
 HU1693|---------------------------------------------------------------------|
 HU1693| PID    Reference Object                     Distance      Geod. Az  |
 HU1693|                                                           dddmmss.s |
 HU1693| HU1692 BOUNDARY MON EW 19 DE MD             33.648 METERS 00029     |
 HU1693| DC7346 GUMBORO RM 1                         18.182 METERS 01931     |
 HU1693| DC7347 GUMBORO RM 2                         19.333 METERS 08939     |
 HU1693| HU1667 NORTH FORK                          APPROX. 1.7 KM 0900002.2 |
 HU1693|---------------------------------------------------------------------|
 HU1693
 HU1693                          SUPERSEDED SURVEY CONTROL
 HU1693
 HU1693  NAD 83(1986)-  38 27 07.50706(N)    075 23 37.17637(W) AD(       ) 2
 HU1693  NAD 27      -  38 27 07.09315(N)    075 23 38.47502(W) AD(       ) 2
 HU1693  NGVD 29 (06/12/91)   14.030  (m)           46.03   (f) ADJUSTED    2 1
 HU1693  NGVD 29 (07/19/86)   14.0    (m)           46.     (f) VERT ANG       
 HU1693
 HU1693.Superseded values are not recommended for survey control.
 HU1693
 HU1693.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1693.See file dsdata.pdf to determine how the superseded data were derived.
 HU1693
 HU1693_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1693_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1693_STAMPING: GUMBORO 1974
 HU1693_MARK LOGO: NGS
 HU1693_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1693+STABILITY: SURFACE MOTION
 HU1693_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1693+SATELLITE: SATELLITE OBSERVATIONS - March 01, 1990
 HU1693
 HU1693  HISTORY     - Date     Condition        Report By
 HU1693  HISTORY     - 1974     MONUMENTED       NGS
 HU1693  HISTORY     - 1974     GOOD             NGS
 HU1693  HISTORY     - 1976     GOOD             NGS
 HU1693  HISTORY     - 19900301 GOOD             NGS
 HU1693
 HU1693                          STATION DESCRIPTION
 HU1693
 HU1693'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1693'THE STATION IS LOCATED ABOUT 4 MILES NORTH-NORTHWEST OF PITTSVILLE,
 HU1693'2 MILES SOUTHWEST OF GUMBORO, 2 MILES WEST OF BETHEL AND ON ROAD
 HU1693'RIGHT-OF-WAY.
 HU1693'
 HU1693'TO REACH THE STATION FROM THE AYERS METHODIST CHURCH IN
 HU1693'PITTSVILLE, MARYLAND, GO NORTH ON MARYLAND STATE ROAD 353 FOR
 HU1693'4.0 MILES TO THE JUNCTION WITH DELAWARE STATE ROAD 54 AND THE
 HU1693'MARYLAND-DELAWARE STATE LINE AND THE STATION IN THE SOUTHEAST
 HU1693'ANGLE OF THE INTERSECTION.
 HU1693'
 HU1693'STATION MARKS ARE STANDARD DISKS STAMPED GUMBORO 1974.  THE
 HU1693'SURFACE DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE
 HU1693'MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.  IT IS 81 FEET
 HU1693'EAST-NORTHEAST OF THE MARYLAND-DELAWARE STATE LINE SIGN, 37 FEET
 HU1693'EAST-SOUTHEAST OF THE CENTER OF THE INTERSECTION, 14 FEET WEST
 HU1693'OF A FIELD ROAD AND 7 FEET NORTH OF A DITCH.  THE UNDERGROUND
 HU1693'DISK IS SET IN THE TOP OF AN IRREGULAR MASS OF CONCRETE 42 INCHES
 HU1693'BELOW THE GROUND SURFACE.
 HU1693'
 HU1693'REFERENCE MARK 1, A STANDARD DISK STAMPED GUMBORO NO 1 1974, IS
 HU1693'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT IS
 HU1693'FLUSH WITH THE GROUND SURFACE.  IT IS 67 FEET NORTHEAST OF THE
 HU1693'CENTER OF THE INTERSECTION, 38 FEET NORTH OF THE CENTER OF A
 HU1693'PAVED ROAD AND 6 FEET EAST OF A SIGN BETHEL CHURCH.
 HU1693'
 HU1693'REFERENCE MARK 2, A STANDARD DISK STAMPED GUMBORO NO 2 1974,
 HU1693'IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1693'IS FLUSH WITH THE GROUND SURFACE.  IT IS 17 FEET SOUTH OF THE
 HU1693'CENTER OF THE PAVED ROAD AND 6 FEET NORTH OF A DITCH.
 HU1693
 HU1693                          STATION RECOVERY (1974)
 HU1693
 HU1693'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 HU1693'RECOVERED IN GOOD CONDITION.
 HU1693
 HU1693                          STATION RECOVERY (1976)
 HU1693
 HU1693'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1693'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1693'CONDITION AS DESCRIBED IN THE 1974 DESCRIPTION.  THE DISTANCES
 HU1693'AND DIRECTIONS TO ALL OBJECTS WERE WITHIN CLOSE AGREEMENT WITH
 HU1693'THE 1974 OBSERVATIONS.
 HU1693'
 HU1693'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 19 WAS SET AT
 HU1693'THIS DATE, SEE DESCRIPTION THEREOF.
 HU1693'
 HU1693'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1693'9 MILES EAST OF DELMAR.
 HU1693
 HU1693                          STATION RECOVERY (1990)
 HU1693
 HU1693'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU1693'7.3 KM (4.54 MI) NORTHERLY ALONG STATE HIGHWAY 353 FROM ITS JUNCTION
 HU1693'WITH STATE HIGHWAY 346 IN PITTSVILLE, 10.7 M (35.10 FT) EAST OF AND
 HU1693'LEVEL WITH THE HIGHWAY CENTERLINE, 5.3 M (17.39 FT) SOUTH OF THE
 HU1693'CENTER OF MARYLAND-DELAWARE STATE LINE ROAD, 4.3 M (14.11 FT) WEST OF
 HU1693'THE CENTER OF A FIELD ENTRANCE, AND IN A CONCRETE MONUMENT THAT IS
 HU1693'FLUSH WITH  THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5323 ***********************************************************************
 JV5323  DESIGNATION -  GUN
 JV5323  PID         -  JV5323
 JV5323  STATE/COUNTY-  MD/BALTIMORE
 JV5323  COUNTRY     -  US
 JV5323  USGS QUAD   -  EDGEWOOD (2016)
 JV5323
 JV5323                         *CURRENT SURVEY CONTROL
 JV5323  ______________________________________________________________________
 JV5323* NAD 83(1991) POSITION- 39 22 49.40718(N) 076 21 12.57919(W)   ADJUSTED
 JV5323* NAVD 88 ORTHO HEIGHT -     2.47  (+/-2cm)        8.1   (feet) VERTCON3
 JV5323  ______________________________________________________________________
 JV5323  GEOID HEIGHT    -        -33.097 (meters)                     GEOID18
 JV5323  LAPLACE CORR    -         -3.16  (seconds)                    DEFLEC18
 JV5323  HORZ ORDER      -  SECOND
 JV5323  VERT ORDER      -  THIRD ? (See Below)
 JV5323
 JV5323.The horizontal coordinates were established by classical geodetic methods
 JV5323.and adjusted by the National Geodetic Survey in January 1992.
 JV5323
 JV5323.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV5323.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV5323
 JV5323.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5323.GEOID18 height accuracy estimate available here.
 JV5323
 JV5323.The vertical order pertains to the NGVD 29 superseded value.
 JV5323
 JV5323.Click photographs - Photos may exist for this station.
 JV5323
 JV5323.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5323
 JV5323. The following values were computed from the NAD 83(1991) position.
 JV5323
 JV5323;                    North         East     Units Scale Factor Converg.
 JV5323;SPC MD       -   190,432.703   455,702.260   MT  0.99998856   +0 24 20.8
 JV5323;SPC MD       -   624,777.96  1,495,083.16   sFT  0.99998856   +0 24 20.8
 JV5323;UTM  18      - 4,359,864.038   383,426.558   MT  0.99976732   -0 51 31.8
 JV5323
 JV5323!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5323!SPC MD       -   1.00000480  x   0.99998856  =   0.99999336
 JV5323!UTM  18      -   1.00000480  x   0.99976732  =   0.99977212
 JV5323
 JV5323:                Primary Azimuth Mark                     Grid Az
 JV5323:SPC MD       -  AIRWAY BEACON 61 A                       076 06 26.2
 JV5323:UTM  18      -  AIRWAY BEACON 61 A                       077 22 18.8
 JV5323
 JV5323_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8342659864(NAD 83)
 JV5323
 JV5323|---------------------------------------------------------------------|
 JV5323| PID    Reference Object                     Distance      Geod. Az  |
 JV5323|                                                           dddmmss.s |
 JV5323| JV5306 AIRWAY BEACON 61 A                  APPROX. 5.3 KM 0763047.0 |
 JV5323| JV5316 FORT HOYLE LAUNDRY STACK            APPROX. 4.5 KM 0775923.2 |
 JV5323| CA9476 GUN RM 1                             31.160 METERS 19223     |
 JV5323| CA9477 GUN RM 2                             15.150 METERS 27037     |
 JV5323| JV5420 RED ROOFED HOUSE NE GABLE CHIM      APPROX. 3.3 KM 2961958.5 |
 JV5323|---------------------------------------------------------------------|
 JV5323
 JV5323                          SUPERSEDED SURVEY CONTROL
 JV5323
 JV5323  NAD 83(1986)-  39 22 49.40132(N)    076 21 12.58626(W) AD(       ) 2
 JV5323  NAD 27      -  39 22 49.01800(N)    076 21 13.73200(W) AD(       ) 2
 JV5323  NGVD 29               2.72   (m)            8.9    (f) LEVELING    3  
 JV5323
 JV5323.Superseded values are not recommended for survey control.
 JV5323
 JV5323.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5323.See file dsdata.pdf to determine how the superseded data were derived.
 JV5323
 JV5323_MARKER: DS = TRIANGULATION STATION DISK
 JV5323_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5323_STAMPING: GUN 1939
 JV5323_MARK LOGO: CGS
 JV5323_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5323+STABILITY: SURFACE MOTION
 JV5323
 JV5323  HISTORY     - Date     Condition        Report By
 JV5323  HISTORY     - 1939     MONUMENTED       CGS
 JV5323  HISTORY     - 1958     MARK NOT FOUND   CGS
 JV5323  HISTORY     - 1973     MARK NOT FOUND   MDDNR
 JV5323
 JV5323                          STATION DESCRIPTION
 JV5323
 JV5323'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5323'LOCATED ON THE W SIDE OF GUNPOWDER RIVER, ON THE ABANDONED
 JV5323'RAILROAD BED JUST SE OF THE SW END OF THE PENNA. RAILROAD BRIDGE
 JV5323'OVER GUNPOWDER RIVER.
 JV5323'
 JV5323'SURFACE, UNDERGROUND AND REFERENCE MARK NO.1 ARE STANDARD BRONZE
 JV5323'DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1B, 7A AND 11A.
 JV5323'
 JV5323'REFERENCE MARK NO.1 IS S OF STATION, 0.6 METERS W OF CENTER LINE
 JV5323'OF LOW HEDGE.
 JV5323'
 JV5323'REFERENCE MARK NO.2 IS SET IN A DRILL HOLE IN THE SE END OF THE
 JV5323'CONCRETE ABUTMENT OF THE RAILROAD BRIDGE.
 JV5323'
 JV5323'TO REACH FROM BALTIMORE, TAKE U.S. HIGHWAY 40 NORTHEASTWARD TO
 JV5323'WHITEMARSH, TURN E AND FOLLOW THE MACADAM ROAD ABOUT 4 MILES TO
 JV5323'CHASE.  JUST AFTER CROSSING THE PENNA. RAILROAD TRACKS AT CHASE,
 JV5323'TURN LEFT AT THE CROSSROADS AND FOLLOW THE ROAD PARALLELING THE
 JV5323'TRACKS TO THE GROUP OF COTTAGES BY THE RIVER, BEAR LEFT TO THE
 JV5323'RAILROAD TRACKS AND STATION GUN.  STATION IS 13.62 METERS SE OF SE
 JV5323'EDGE OF CONCRETE PARAPET ALONG RAILROAD BRIDGE.  9 METERS NW OF
 JV5323'HIGH-WATER LINE.  11.4 METERS SW OF HIGH-WATER LINE.  AND 22.58
 JV5323'METERS NE OF NE CORNER OF CONCRETE TOOL SHED BY THE TRACKS.
 JV5323'
 JV5323'HEIGHT OF LIGHT ABOVE STATION MARK 5 METERS.
 JV5323
 JV5323                          STATION RECOVERY (1958)
 JV5323
 JV5323'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (GCR)
 JV5323'REFERENCE MARKS 1 AND 2 WERE LOCATED AS DESCRIBED IN 1939
 JV5323'DESCRIPTION AND THESE MARKS ARE IN GOOD CONDITION.  THE STATION
 JV5323'MARK COULD NOT BE FOUND.  THE DISTANCE BETWEEN THE TWO REFERENCE
 JV5323'MARKS AND THE STATION WAS CAREFULLY DUPLICATED AND A HOLE DUG TO
 JV5323'THE DEPTH OF 3 FEET.  THE UNDERGROUND STATION MARK IS BELIEVED TO
 JV5323'HAVE BEEN LOST BY SOIL EROSION.
 JV5323
 JV5323                          STATION RECOVERY (1973)
 JV5323
 JV5323'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 JV5323'GUN RM 2 1939 GOOD
 JV5323'
 JV5323'GUN RM 1 1939 LOST
 JV5323'
 JV5323'RM 2 RECOVERED AS DESCRIBED.
 JV5323'
 JV5323'RM 1 COULD NOT BE FOUND AFTER SEARCH, POSSIBLE STILL EXISTS BUT
 JV5323'COVERED OVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4928 ***********************************************************************
 JV4928  DESIGNATION -  GUN CLUB
 JV4928  PID         -  JV4928
 JV4928  STATE/COUNTY-  MD/HARFORD
 JV4928  COUNTRY     -  US
 JV4928  USGS QUAD   -  PERRYMAN (2016)
 JV4928
 JV4928                         *CURRENT SURVEY CONTROL
 JV4928  ______________________________________________________________________
 JV4928* NAD 83(1991) POSITION- 39 23 27.00166(N) 076 12 22.47256(W)   ADJUSTED
 JV4928* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV4928  ______________________________________________________________________
 JV4928  GEOID HEIGHT    -        -33.268 (meters)                     GEOID18
 JV4928  LAPLACE CORR    -         -1.68  (seconds)                    DEFLEC18
 JV4928  HORZ ORDER      -  FIRST
 JV4928
 JV4928.The horizontal coordinates were established by classical geodetic methods
 JV4928.and adjusted by the National Geodetic Survey in January 1992.
 JV4928
 JV4928.The orthometric height was scaled from a topographic map.
 JV4928
 JV4928.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4928.GEOID18 height accuracy estimate available here.
 JV4928
 JV4928.Click photographs - Photos may exist for this station.
 JV4928
 JV4928.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4928
 JV4928. The following values were computed from the NAD 83(1991) position.
 JV4928
 JV4928;                    North         East     Units Scale Factor Converg.
 JV4928;SPC MD       -   191,692.131   468,378.953   MT  0.99999019   +0 29 53.5
 JV4928;SPC MD       -   628,909.93  1,536,673.28   sFT  0.99999019   +0 29 53.5
 JV4928;UTM  18      - 4,360,843.246   396,124.908   MT  0.99973285   -0 45 56.0
 JV4928
 JV4928!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4928!SPC MD       -   1.00000495  x   0.99999019  =   0.99999514
 JV4928!UTM  18      -   1.00000495  x   0.99973285  =   0.99973779
 JV4928
 JV4928:                Primary Azimuth Mark                     Grid Az
 JV4928:SPC MD       -  BRIAR                                    213 49 14.3
 JV4928:UTM  18      -  BRIAR                                    215 05 03.8
 JV4928
 JV4928_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9612460843(NAD 83)
 JV4928
 JV4928|---------------------------------------------------------------------|
 JV4928| PID    Reference Object                     Distance      Geod. Az  |
 JV4928|                                                           dddmmss.s |
 JV4928| JV4935 MICHAELSVILLE WATER TANK            APPROX. 5.6 KM 0302707.1 |
 JV4928| JV4930 BRIAR                               APPROX. 1.8 KM 2141907.8 |
 JV4928| JV4915 H TOWER                             APPROX. 4.5 KM 2245153.6 |
 JV4928| CA9478 GUN CLUB AZ MK                                     2634252.9 |
 JV4928| CA9479 GUN CLUB RM 1                        34.404 METERS 27015     |
 JV4928| JV4933 C TOWER                             APPROX. 3.3 KM 2704844.9 |
 JV4928| CA9480 GUN CLUB RM 2                        33.363 METERS 35521     |
 JV4928|---------------------------------------------------------------------|
 JV4928
 JV4928                          SUPERSEDED SURVEY CONTROL
 JV4928
 JV4928  NAD 83(1986)-  39 23 26.99519(N)    076 12 22.47970(W) AD(       ) 1
 JV4928  NAD 27      -  39 23 26.60300(N)    076 12 23.64500(W) AD(       ) 1
 JV4928
 JV4928.Superseded values are not recommended for survey control.
 JV4928
 JV4928.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4928.See file dsdata.pdf to determine how the superseded data were derived.
 JV4928
 JV4928_MARKER: DS = TRIANGULATION STATION DISK
 JV4928_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4928_STAMPING: GUN CLUB 1949
 JV4928_MARK LOGO: CGS
 JV4928_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4928+STABILITY: SURFACE MOTION
 JV4928
 JV4928  HISTORY     - Date     Condition        Report By
 JV4928  HISTORY     - 1949     MONUMENTED       CGS
 JV4928
 JV4928                          STATION DESCRIPTION
 JV4928
 JV4928'DESCRIBED BY COAST AND GEODETIC SURVEY 1949 (CAS)
 JV4928'STATION IS LOCATED ON THE ABERDEEN PROVING GROUNDS ABOUT 0.1
 JV4928'MILE NORTHEAST OF THE OFFICERS GUN CLUB.  IT IS 84 FEET EAST OF
 JV4928'THE CENTER OF A PAVED ROAD, 38 FEET SOUTHEAST OF THE NORTHEAST
 JV4928'CORNER OF A CONCRETE GUN TOWER AND 34 FEET NORTHEAST OF THE
 JV4928'SOUTHEAST CORNER OF THE TOWER.  THE MARK IS FLUSH AND THE DISK IS
 JV4928'STAMPED GUN CLUB 1949.
 JV4928'
 JV4928'REFERENCE MARK NO. 1 IS 71 FEET SOUTHWEST OF THE SOUTHWEST
 JV4928'CORNER OF THE GUN TOWER AND 15 FEET SOUTHEAST OF THE CENTER OF
 JV4928'THE ROAD.  THE MARK IS FLUSH AND THE DISK IS STAMPED GUN CLUB
 JV4928'NO 1 1949.
 JV4928'
 JV4928'REFERENCE MARK NO. 2 IS 30 FEET EAST OF THE CENTER OF THE PAVED
 JV4928'ROAD AND 18 FEET NORTH OF A TELEPHONE POLE.  THE MARK IS FLUSH
 JV4928'AND THE DISK IS STAMPED GUN CLUB NO 2 1949.
 JV4928'
 JV4928'AZIMUTH MARK IS 70 FEET EAST OF A SMALL FRAME BUILDING, 16 FEET
 JV4928'SOUTHEAST OF THE CENTER OF THE ROAD, 12 FEET NORTHWEST OF A
 JV4928'GASOLINE PUMP AND 8 FEET NORTHWEST OF A 6-INCH CEDAR TREE.  THE
 JV4928'MARK IS FLUSH AND THE DISK IS STAMPED GUN CLUB 1949.
 JV4928'
 JV4928'TO REACH THE STATION FROM GATE NO. 3 ON THE ABERDEEN PROVING
 JV4928'GROUNDS GO WEST AND SOUTHWEST FOR 4.3 MILES TO A T-ROAD, TURN
 JV4928'RIGHT AND GO WEST FOR 0.1 MILE, TURN LEFT AND GO SOUTHWEST FOR
 JV4928'1.9 MILES TO A SIGN OFFICERS GUN CLUB, TURN LEFT AND GO SOUTH AND
 JV4928'SOUTHWEST FOR 1.8 MILES TO THE STATION ON THE LEFT AS DESCRIBED,
 JV4928'CONTINUE FOR 0.1 MILE TO THE AZIMUTH MARK ON THE LEFT AS
 JV4928'DESCRIBED.
 JV4928'
 JV4928'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6434 ***********************************************************************
 HV6434  DESIGNATION -  GUNNERS MSFC 1910
 HV6434  PID         -  HV6434
 HV6434  STATE/COUNTY-  MD/DORCHESTER
 HV6434  COUNTRY     -  US
 HV6434  USGS QUAD   -  HONGA (2016)
 HV6434
 HV6434                         *CURRENT SURVEY CONTROL
 HV6434  ______________________________________________________________________
 HV6434* NAD 83(1991) POSITION- 38 20 17.01732(N) 076 12 43.83669(W)   ADJUSTED
 HV6434* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6434  ______________________________________________________________________
 HV6434  GEOID HEIGHT    -        -35.142 (meters)                     GEOID18
 HV6434  LAPLACE CORR    -         -5.66  (seconds)                    DEFLEC18
 HV6434  HORZ ORDER      -  THIRD
 HV6434
 HV6434.The horizontal coordinates were established by classical geodetic methods
 HV6434.and adjusted by the National Geodetic Survey in January 1992.
 HV6434
 HV6434.The orthometric height was scaled from a topographic map.
 HV6434
 HV6434.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6434.GEOID18 height accuracy estimate available here.
 HV6434
 HV6434.Click photographs - Photos may exist for this station.
 HV6434
 HV6434.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6434
 HV6434. The following values were computed from the NAD 83(1991) position.
 HV6434
 HV6434;                    North         East     Units Scale Factor Converg.
 HV6434;SPC MD       -    74,824.842   468,876.291   MT  0.99999360   +0 29 40.1
 HV6434;SPC MD       -   245,487.84  1,538,304.96   sFT  0.99999360   +0 29 40.1
 HV6434;UTM  18      - 4,244,019.787   394,062.683   MT  0.99973821   -0 45 07.1
 HV6434
 HV6434!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6434!SPC MD       -   1.00000555  x   0.99999360  =   0.99999915
 HV6434!UTM  18      -   1.00000555  x   0.99973821  =   0.99974376
 HV6434
 HV6434:                Primary Azimuth Mark                     Grid Az
 HV6434:SPC MD       -  KERWIN MSFC 1910                         037 50 15.5
 HV6434:UTM  18      -  KERWIN MSFC 1910                         039 05 02.7
 HV6434
 HV6434_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9406244019(NAD 83)
 HV6434
 HV6434|---------------------------------------------------------------------|
 HV6434| PID    Reference Object                     Distance      Geod. Az  |
 HV6434|                                                           dddmmss.s |
 HV6434| HV6439 KERWIN MSFC 1910                    APPROX. 3.2 KM 0381955.6 |
 HV6434| HV6432 MOUNT ZION ME CHURCH SPIRE          APPROX. 2.8 KM 2090418.0 |
 HV6434|---------------------------------------------------------------------|
 HV6434
 HV6434                          SUPERSEDED SURVEY CONTROL
 HV6434
 HV6434  NAD 83(1986)-  38 20 17.01644(N)    076 12 43.85385(W) AD(       ) 3
 HV6434  NAD 27      -  38 20 16.59400(N)    076 12 45.07500(W) AD(       ) 3
 HV6434  USSD        -  38 20 16.99200(N)    076 12 44.83500(W) AD(       ) 3
 HV6434
 HV6434.Superseded values are not recommended for survey control.
 HV6434
 HV6434.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6434.See file dsdata.pdf to determine how the superseded data were derived.
 HV6434
 HV6434_MARKER: H = DRILL HOLE
 HV6434_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6434_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6434+STABILITY: SURFACE MOTION
 HV6434
 HV6434  HISTORY     - Date     Condition        Report By
 HV6434  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6434  HISTORY     - 1931     GOOD             CGS
 HV6434  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6434
 HV6434                          STATION DESCRIPTION
 HV6434
 HV6434'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6434'STATION IS ON THE WESTERN SHORE OF HONGA RIVER, ON GUNNERS
 HV6434'ISLAND, ON POINT AT NORTHERN SIDE OF ENTRANCE TO GUNNERS COVE,
 HV6434'ABOUT 5/8 MILE N OF LONG POINT AND 1-1/8 MILES SE OF FISHING
 HV6434'CREEK BRIDGE, ON MARSH WITH WATER BUSHES ALONGSHORE, ABOUT 1
 HV6434'FOOT ABOVE HIGH WATER, 23 YARDS SW OF SHORE, 28 YARDS S OF SHORE,
 HV6434'70 YARDS NW OF EXTREME END OF POINT, AND 170 YARDS NE OF
 HV6434'SHORE.  STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV6434'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6434'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6434'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP
 HV6434'OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE
 HV6434'PIPE, BURIED WITH TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HV6434'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6434'FOLLOWS--LEFT EDGE OF HOUSE, 1-1/8 MILES, N 82 DEG 05 MIN W.
 HV6434'NEAR PEAK OF HOUSE, 1-1/8 MILES, N 74 DEG 28 MIN W.  CENTER OF
 HV6434'DRAW OF FISHING CREEK BRIDGE, 1-1/8 MILES, N 47 DEG 00 MIN W.
 HV6434'RIGHT EDGE OF OLD WINDMILL, 1-1/4 MILES, N 46 DEG 27 MIN W.
 HV6434'NEAR PEAK OF SMALL HOUSE, 1-1/4 MILES, N 41 DEG 50 MIN W.
 HV6434'NEAR PEAK OF BARN, 2-1/2 MILES, S 89 DEG 07 MIN E.  CHIMNEY ON
 HV6434'LEFT END OF HOUSE, 2 MILES, S 63 DEG 25 MIN E.  CENTER OF
 HV6434'DRAWBRIDGE, 2-7/8 MILES, S 06 DEG 57 MIN E.
 HV6434
 HV6434                          STATION RECOVERY (1931)
 HV6434
 HV6434'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1931 (EHB)
 HV6434'STATION RECOVERED AS DESCRIBED.  DESCRIPTION IS GOOD, EXCEPT THAT
 HV6434'THE ONLY AZIMUTH MARKS VISIBLE ARE HOUSE 1-1/8 MILES, N 82 DEG 05
 HV6434'MIN W, AND RIGHT EDGE OF OLD WINDMILL 1-1/4 MILES, N 46 DEG 27 MIN W.
 HV6434
 HV6434                          STATION RECOVERY (1942)
 HV6434
 HV6434'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6434'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE
 HV6434'HOUR.  NO TRACE OF THIS STATION COULD BE FOUND, BUT AN ENGINEERS
 HV6434'STATION MARK WAS FOUND IN THE APPROXIMATE LOCATION OF THIS
 HV6434'STATION.  IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED
 HV6434'AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5351 ***********************************************************************
 JV5351  DESIGNATION -  GUNPOWDER
 JV5351  PID         -  JV5351
 JV5351  STATE/COUNTY-  MD/HARFORD
 JV5351  COUNTRY     -  US
 JV5351  USGS QUAD   -  GUNPOWDER NECK (2016)
 JV5351
 JV5351                         *CURRENT SURVEY CONTROL
 JV5351  ______________________________________________________________________
 JV5351* NAD 83(1991) POSITION- 39 19 53.73520(N) 076 17 07.67863(W)   ADJUSTED
 JV5351* NAVD 88 ORTHO HEIGHT -     7.    (meters)       23.    (feet) SCALED
 JV5351  ______________________________________________________________________
 JV5351  GEOID HEIGHT    -        -33.204 (meters)                     GEOID18
 JV5351  LAPLACE CORR    -         -2.28  (seconds)                    DEFLEC18
 JV5351  HORZ ORDER      -  FIRST
 JV5351
 JV5351.The horizontal coordinates were established by classical geodetic methods
 JV5351.and adjusted by the National Geodetic Survey in January 1992.
 JV5351
 JV5351.The orthometric height was scaled from a topographic map.
 JV5351
 JV5351.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5351.GEOID18 height accuracy estimate available here.
 JV5351
 JV5351.Click photographs - Photos may exist for this station.
 JV5351
 JV5351.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5351
 JV5351. The following values were computed from the NAD 83(1991) position.
 JV5351
 JV5351;                    North         East     Units Scale Factor Converg.
 JV5351;SPC MD       -   185,059.004   461,605.765   MT  0.99998143   +0 26 54.5
 JV5351;SPC MD       -   607,147.75  1,514,451.58   sFT  0.99998143   +0 26 54.5
 JV5351;UTM  18      - 4,354,362.668   389,208.787   MT  0.99975113   -0 48 53.4
 JV5351
 JV5351!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5351!SPC MD       -   1.00000415  x   0.99998143  =   0.99998558
 JV5351!UTM  18      -   1.00000415  x   0.99975113  =   0.99975528
 JV5351
 JV5351:                Primary Azimuth Mark                     Grid Az
 JV5351:SPC MD       -  GUNPOWDER AZ MK                          279 01 23.8
 JV5351:UTM  18      -  GUNPOWDER AZ MK                          280 17 11.7
 JV5351
 JV5351_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8920854362(NAD 83)
 JV5351
 JV5351|---------------------------------------------------------------------|
 JV5351| PID    Reference Object                     Distance      Geod. Az  |
 JV5351|                                                           dddmmss.s |
 JV5351| CA9482 GUNPOWDER RM 1                       32.236 METERS 19005     |
 JV5351| CA9484 GUNPOWDER RM 3                       64.011 METERS 19607     |
 JV5351| CA9485 GUNPOWDER RM 4                        8.738 METERS 26559     |
 JV5351| CA9481 GUNPOWDER AZ MK                                    2792818.3 |
 JV5351| CA9483 GUNPOWDER RM 2                       29.009 METERS 34252     |
 JV5351|---------------------------------------------------------------------|
 JV5351
 JV5351                          SUPERSEDED SURVEY CONTROL
 JV5351
 JV5351  NAD 83(1986)-  39 19 53.72907(N)    076 17 07.68635(W) AD(       ) 1
 JV5351  NAD 27      -  39 19 53.33900(N)    076 17 08.83800(W) AD(       ) 1
 JV5351
 JV5351.Superseded values are not recommended for survey control.
 JV5351
 JV5351.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5351.See file dsdata.pdf to determine how the superseded data were derived.
 JV5351
 JV5351_MARKER: DS = TRIANGULATION STATION DISK
 JV5351_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5351_STAMPING: GUNPOWDER 1949
 JV5351_MARK LOGO: CGS
 JV5351_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5351+STABILITY: SURFACE MOTION
 JV5351
 JV5351  HISTORY     - Date     Condition        Report By
 JV5351  HISTORY     - 1949     MONUMENTED       CGS
 JV5351  HISTORY     - 1961     GOOD             CGS
 JV5351  HISTORY     - 1972     GOOD             NGS
 JV5351  HISTORY     - 1973     SEE DESCRIPTION  NGS
 JV5351  HISTORY     - 1974     GOOD             NGS
 JV5351
 JV5351                          STATION DESCRIPTION
 JV5351
 JV5351'DESCRIBED BY COAST AND GEODETIC SURVEY 1949 (CAS)
 JV5351'STATION IS LOCATED ON THE ABERDEEN PROVING GROUND, ON THE NORTHERN
 JV5351'END OF GUN RANGE ON GUNPOWDER NECK.  IT IS 54 FEET NORTH OF
 JV5351'CENTER OF GRAVEL ROAD.  THE MARK IS FLUSH AND THE DISK IS STAMPED
 JV5351'GUNPOWDER 1949.
 JV5351'
 JV5351'REFERENCE MARK NO.1 IS 74 FEET NORTH OF CENTER OF GRAVEL ROAD AND
 JV5351'26 FEET EAST OF CENTER OF GRAVEL ROAD.  THE MARK IS FLUSH AND THE
 JV5351'DISK IS STAMPED GUNPOWDER NO 1 1949.
 JV5351'
 JV5351'REFERENCE MARK NO. 2 IS 25 FEET EAST OF CENTER OF GRAVEL ROAD.
 JV5351'THE MARK IS FLUSH AND THE DISK IS STAMPED GUNPOWDER NO 2 1949.
 JV5351'
 JV5351'AZIMUTH MARK IS 53 FEET NORTH OF CENTER OF PAVED ROAD AND 6 FEET
 JV5351'WEST OF END OF A CONCRETE SIDING.  THE MARK IS SET IN THE CONCRETE
 JV5351'SIDING AND THE DISK IS STAMPED GUNPOWDER 1949.
 JV5351'
 JV5351'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV5351'STATE HIGHWAY 408 IN EDGEWOOD, GO SOUTH OF HIGHWAY 408 FOR 1.7
 JV5351'MILES TO WHERE HIGHWAY BEARS RIGHT, CONTINUE STRAIGHT AHEAD,
 JV5351'THROUGH UNDERPASS, FOR 0.1 MILE TO ENTRANCE OF ABERDEEN PROVING
 JV5351'GROUND.  PASS THROUGH GATE AND GO 0.4 MILE TO A FORK IN THE ROAD,
 JV5351'TAKE LEFT FORK AND GO 2.35 MILES TO SIDE ROAD RIGHT, JUST BEFORE
 JV5351'REACHING GATE NO. 2, TURN RIGHT AND GO 1.05 MILES TO GATE NO. 3
 JV5351'AND T-INTERSECTION, PASS THROUGH GATE, TURN LEFT, AND GO 1.1
 JV5351'MILES TO T-INTERSECTION AND GATE ON LEFT, TURN LEFT, PASSING
 JV5351'THROUGH GATE AND GO 0.3 MILE TO GATES N. 4 AND 5.  TURN RIGHT,
 JV5351'THROUGH GATE NO. 5 AND GO 1.7 MILES TO GATE NO. 6. PASS THROUGH
 JV5351'GATE AND GO 0.15 MILE TO SIDE ROAD LEFT, TURN LEFT AND GO 0.05
 JV5351'MILE TO AZIMUTH ON LEFT.  CONTINUE STRAIGHT AHEAD FOR 0.1 MILE TO
 JV5351'SIDE ROAD RIGHT, TURN RIGHT AND GO 0.05 MILE TO T-INTERSECTION,
 JV5351'TURN LEFT AND GO 0.1 MILE TO SIDE ROAD RIGHT, TURN RIGHT AND GO
 JV5351'0.05 MILE TO STATION ON LEFT AS DESCRIBED.
 JV5351'
 JV5351'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 JV5351
 JV5351                          STATION RECOVERY (1961)
 JV5351
 JV5351'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5351'THE STATION AND REFERENCE MARK 1 WERE RECOVERED IN GOOD CONDITION.
 JV5351'THE STAMPINGS WERE FOUND CORRECT AS PUBLISHED.  THE DISTANCE FROM
 JV5351'THE STATION WAS MEASURED AND FOUND IN ERROR.  THE NEW DISTANCE IS
 JV5351'106.10 FEET.
 JV5351'
 JV5351'ANGLES AND A DISTANCE TO R.M. 2 AND THE AZIMUTH MARK WERE LAID OUT
 JV5351'BUT THE MARKS WERE NOT FOUND.
 JV5351'
 JV5351'THE STATION WAS RECOVERED AS DESCRIBED WITH THE FOLLOWNG ADDITIONS.
 JV5351'
 JV5351'THE STATION IS MARKED BY 2-4 IN X4 IN WITNESS POSTS ABOUT 4 FEET
 JV5351'HIGH AND 4 FEET APART.
 JV5351
 JV5351                          STATION RECOVERY (1972)
 JV5351
 JV5351'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (LFV)
 JV5351'BULLDOZING HAS ALTERED THE AREA.  RM2 WAS NOT FOUND.  RM1 WAS
 JV5351'FOUND LEANING IN A DITCH EMBANKMENT AND IS OUT OF POSITION.  THE
 JV5351'STATION WAS RECOVERED.  IT IS 204 FEET S OF A GRAVEL ROAD, 53 FEET
 JV5351'E OF A DIRT ROAD, AND HAS 1 WITNESS POST.
 JV5351'
 JV5351'TO REACH THE STATION FROM THE ENTRANCE GATE OF EDGEWOOD ARSENAL,
 JV5351'GO S 0.4 MILES TO A FORK AND STAY LEFT.  GO S 2.2 MILES ON RICKETT
 JV5351'POINT ROAD TO A SECURITY GATE AND GET RANGE PASSES.  GO 250 FEET
 JV5351'TO OFFICE ON LEFT FOR CLEARANCE TO ENTER RANGE AREAS.  GO S 1.6
 JV5351'MILES TO A T-INTERSECTION AND TURN RIGHT.  GO W 0.6 MILES TO A
 JV5351'T-INTERSECTION AND TURN LEFT.  GO S FOR 1.9 MILES TO A
 JV5351'T-INTERSECTION AND TURN LEFT.  GO E 400 FEET TO RANGE ON RIGHT FOR
 JV5351'CLEARANCE TO ENTER RANGE, GO E 0.25 MILES AND TURN RIGHT ONTO DIRT
 JV5351'ROAD.  GO S 300 FEET AND TURN LEFT ONTO GRAVEL ROAD.  GO E 0.25
 JV5351'MILES TO DIRT ROAD AND TURN RIGHT.  GO S 200 FT. TO STATION ON LEFT.
 JV5351'
 JV5351'THE AZ. MK IS INSIDE A FENCED AREA AROUND A BOAT SHED 200 FT. E OF
 JV5351'THE RANGE OFFICE.  IT IS W. OF THE STATION, AND NOT E AS
 JV5351'ORIGINALLY DESCRIBED.
 JV5351
 JV5351                          STATION RECOVERY (1973)
 JV5351
 JV5351'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (LFS)
 JV5351'THE STATION MARK AND THE AZIMUTH MARK WERE RECOVERED AND FOUND IN
 JV5351'GOOD CONDITION.  REFERENCE MARKS ONE AND TWO WAS SEARCHED FOR BUT
 JV5351'NOT FOUND.  NEW REFERENCE MARKS THREE AND FOUR WERE ESTABLISHED AT
 JV5351'THIS TIME.
 JV5351'
 JV5351'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV5351'
 JV5351'THE STATION IS LOCATED ABOUT 18 MILES NORTHEAST OF BALTIMORE,
 JV5351'ABOUT 6 MILES SOUTH OF EDGEWOOD AND IN SECTION H OF THE EDGEWOOD
 JV5351'ARSENAL.
 JV5351'
 JV5351'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND EDGEWOOD
 JV5351'ROAD IN THE NORTHWEST PART OF EDGEWOOD.  GO SOUTHEAST ON EDGEWOOD
 JV5351'ROAD FOR 1.8 MILES TO THE ENTRANCE TO EDGEWOOD ARSENAL.
 JV5351'(CLEARANCE NEEDED) PASS THROUGH THE GUARD GATE AND GO SOUTHERLY ON
 JV5351'WEIS ROAD FOR 0.4 MILE TO A FORK.  KEEP LEFT AND GO SOUTHERLY ON
 JV5351'RICKETTS POINT ROAD FOR 2.05 MILES TO A GATE.  PASS THROUGH THE
 JV5351'GATE AND CONTINUE SOUTHERLY ON RICKETTS POINT ROAD FOR 0.1 MILE TO
 JV5351'A FORK.  KEEP RIGHT AND CONTINUE SOUTHERLY ON A PAVED ROAD FOR 0.2
 JV5351'MILE TO A FORK.  KEEP LEFT AND CONTINUE SOUTHERLY ON THE PAVED
 JV5351'ROAD FOR 1.2 MILES TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO
 JV5351'SOUTHWEST ON A PAVED ROAD FOR 0.5 MILE TO A FORK. KEEP LEFT AND GO
 JV5351'SOUTHERLY ON THE PAVED ROAD FOR 1.6 MILE TO A GATE AT BUILDING
 JV5351'NUMBERED 1636.  CONTINUE SOUTHERLY ON THE PAVED ROAD FOR 0.25
 JV5351'MILE TO A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTHEAST ON A PAVED
 JV5351'ROAD FOR 0.1 MILE TO A WOVEN WIRE ENCLOSURE ON THE LEFT AT
 JV5351'BUILDING 1464 AND THE AZIMUTH MARK INSIDE OF THE WIRE ENCLOSURE.
 JV5351'BEAR RIGHT AND GO SOUTHEAST ON A DIRT ROAD FOR 0.35 MILE TO A SIDE
 JV5351'ROAD RIGHT.  TURN RIGHT AND GO NORTHWEST ON A TRACK ROAD FOR 0.05 MILE
 JV5351'TO THE STATION ON THE LEFT.
 JV5351'
 JV5351'THE STATION MARK IS A STANDARD DISK STAMPED GUNPOWDER 1949, SET IN
 JV5351'THE TOP OF A 12-INCH ROUND MASS OF CONCRETE FLUSH WITH THE
 JV5351'SURFACE.  IT IS IN A GRASS FIELD, 54 FT. EAST OF THE CENTER OF THE
 JV5351'TRACK ROAD, 28.9 FEET EAST OF A WITNESS POST, 2 FEET NORTHEAST OF
 JV5351'A MILITARY WITNESS POST.
 JV5351'
 JV5351'REFERENCE MARK NUMBER THREE IS A STANDARD DISK CEMENTED IN A DRILL
 JV5351'HOLE IN A LARGE CONCRETE BUNKER WHICH IS 8 FEET BY 20 FEET IN SIZE
 JV5351'AND 10 FEET HIGH.  IT IS IN THE NORTHEAST CORNER OF THE FIRST
 JV5351'BUNKER TO THE WEST OF THE CENTER OF THE TRACK ROAD LEADING TO THE
 JV5351'STATION.  IT IS 209 FEET SOUTH OF THE MILITARY WITNESS POST, 204
 JV5351'FEET SOUTH OF A STANDARD METAL WITNESS POST AND 18 FEET SOUTH OF
 JV5351'THE CENTER LINE OF A EAST-WEST TRACK ROAD.  THE DISK IS STAMPED
 JV5351'GUNPOWDER 1949 NO 3 1973.
 JV5351'
 JV5351'REFERENCE MARK NUMBER FOUR IS A STANDARD DISK STAMPED GUNPOWDER
 JV5351'1949 NO 4 1973, SET IN THE TOP OF A 10-INCH ROUND CONCRETE
 JV5351'MONUMENT WHICH IS FLUSH WITH THE SURFACE.  IT IS 26.5 FEET WEST OF
 JV5351'THE MILITARY WITNESS POST, 26 FEET EAST OF THE CENTER OF THE TRACK
 JV5351'ROAD AND 2 FEET SOUTH OF THE STANDARD METAL WITNESS POST.
 JV5351'
 JV5351'THE AZIMUTH MARK IS A STANDARD DISK STAMPED GUNPOWDER 1949,
 JV5351'CEMENTED IN A DRILL HOLE IN THE SOUTHEAST CORNER OF A CONCRETE PAD
 JV5351'WITH A WOVEN WIRE FENCE AROUND IT.  IT IS 30 FEET EAST OF THE EAST
 JV5351'ENTRANCE TO BUILDING 1464 AND 15 FEET NORTHWEST OF THE SOUTHEAST
 JV5351'CORNER OF THE WOVEN WIRE FENCE CORNER.
 JV5351'
 JV5351'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN AT EDGEWOOD ARSENAL.
 JV5351
 JV5351                          STATION RECOVERY (1974)
 JV5351
 JV5351'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RDB)
 JV5351'STATION, AZIMUTH MARK, AND NO. 4, 1973 WERE RECOVERED IN GOOD
 JV5351'CONDITION USING RECOVERY NOTE BY LFV, 1972.  NO. 3, 1973 WAS NOT
 JV5351'RECOVERED.
 JV5351'
 JV5351'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN AT EDGEWOOD
 JV5351'ARSENAL, EDGEWOOD, MD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0647 ***********************************************************************
 HV0647  DESIGNATION -  GUNS USN
 HV0647  PID         -  HV0647
 HV0647  STATE/COUNTY-  MD/CHARLES
 HV0647  COUNTRY     -  US
 HV0647  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV0647
 HV0647                         *CURRENT SURVEY CONTROL
 HV0647  ______________________________________________________________________
 HV0647* NAD 83(1986) POSITION- 38 20 32.     (N) 076 58 43.     (W)   SCALED
 HV0647* NAVD 88 ORTHO HEIGHT -     0.881 (meters)        2.89  (feet) ADJUSTED
 HV0647  ______________________________________________________________________
 HV0647  GEOID HEIGHT    -        -33.456 (meters)                     GEOID18
 HV0647  DYNAMIC HEIGHT  -          0.880 (meters)        2.89  (feet) COMP
 HV0647  MODELED GRAVITY -    980,004.2   (mgal)                       NAVD 88
 HV0647
 HV0647  VERT ORDER      -  SECOND    CLASS 0
 HV0647
 HV0647.The horizontal coordinates were scaled from a map and have
 HV0647.an estimated accuracy of +/- 6 seconds.
 HV0647
 HV0647.The orthometric height was determined by differential leveling and
 HV0647.adjusted by the NATIONAL GEODETIC SURVEY
 HV0647.in June 1991.
 HV0647
 HV0647.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0647.GEOID18 height accuracy estimate available here.
 HV0647
 HV0647.Click photographs - Photos may exist for this station.
 HV0647
 HV0647.The dynamic height is computed by dividing the NAVD 88
 HV0647.geopotential number by the normal gravity value computed on the
 HV0647.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0647.degrees latitude (g = 980.6199 gals.).
 HV0647
 HV0647.The modeled gravity was interpolated from observed gravity values.
 HV0647
 HV0647;                    North         East    Units  Estimated Accuracy
 HV0647;SPC MD       -    74,990.      401,870.      MT  (+/- 180 meters Scaled)
 HV0647
 HV0647_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH270456(NAD 83)
 HV0647
 HV0647                          SUPERSEDED SURVEY CONTROL
 HV0647
 HV0647  NAD 27      -  38 20 31.05400(N)    076 58 43.79900(W) AD(       ) 3
 HV0647  NGVD 29               1.15   (m)            3.8    (f) LEVELING    3  
 HV0647  NGVD 29 (11/26/84)    1.147  (m)            3.76   (f) ADJUSTED    2 0
 HV0647
 HV0647.Superseded values are not recommended for survey control.
 HV0647
 HV0647.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0647.See file dsdata.pdf to determine how the superseded data were derived.
 HV0647
 HV0647_MARKER: DD = SURVEY DISK
 HV0647_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0647_SP_SET: CON TILE
 HV0647_STAMPING: GUNS 1942
 HV0647_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0647
 HV0647  HISTORY     - Date     Condition        Report By
 HV0647  HISTORY     - 1942     MONUMENTED       DOD
 HV0647  HISTORY     - 1945     GOOD             USN
 HV0647  HISTORY     - 1960     SEE DESCRIPTION  CGS
 HV0647  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV0647  HISTORY     - 1968     MARK NOT FOUND   CGS
 HV0647
 HV0647                          STATION DESCRIPTION
 HV0647
 HV0647'DESCRIBED BY US DEPARTMENT OF DEFENSE 1942
 HV0647'2 MI W FROM WAYSIDE.
 HV0647'THIS MARK IS AT CEDAR POINT ABOUT 2 MILES WEST ALONG THE MORGANTOWN
 HV0647'TOAD, FROM THE WYE JUNCTION AT WAYSIDE, CHARLES COUNTY, AT THE
 HV0647'END OF THE POINT, ABOUT 75 FEET NORTHWEST OF REFERENCE MARK
 HV0647'MARGAN NO. 2 NEAR A TREE, AND IS A NAVY DISK SET IN THE TOP
 HV0647'OF A CONCRETE TILE AND IMBEDDED IN A MASS OF CONCRETE.
 HV0647
 HV0647                          STATION RECOVERY (1945)
 HV0647
 HV0647'RECOVERY NOTE BY US NAVY 1945 (RSD)
 HV0647'STATION IS LOCATED ON LOWER CEDAR POINT ON THE E SHORE OF THE
 HV0647'POTOMAC RIVER.  IT IS CLOSE TO THE EXTREMITY OF THE POINT AND IS
 HV0647'21 FEET INSHORE FROM HIGH-WATER MARK OF THE POINT.  IT IS 20 FEET
 HV0647'FROM THE N SHORE AT HIGH WATER AND 13 FEET FROM HIGH-WATER MARK ON
 HV0647'THE E SIDE.
 HV0647'
 HV0647'STATION MARKER IS A STANDARD BUREAU OF ORDNANCE TRIANGULATION
 HV0647'REFERENCE DISK WITH THE ARROW PEENED OUT, SET IN A 6-INCH PIECE OF
 HV0647'TERRA COTTA TILE SURROUNDED BY CONCRETE.  THE TOP IS ABOUT 6
 HV0647'INCHES FROM THE SURFACE OF THE GROUND.  TWELVE FEET IN FRONT OF
 HV0647'THE STATION STANDS A LOMBARDY POPLAR ABOUT 3 FEET IN DIAMETER. THE
 HV0647'STATION IS IN A CLOSE PROXIMITY OF STATION MARGAN WHICH HAS ERODED
 HV0647'OUT.
 HV0647'
 HV0647'REFERENCE MARK IS A STANDARD BRONZE BUREAU OF ORDNANCE REFERENCE
 HV0647'DISK IN SIMILAR MASS OF CONCRETE 55 FEET IN REAR OF STATION.
 HV0647'ALSO IN RANGE THERE IS A BLAZE ON A MULBERRY TREE MARKED BY 5
 HV0647'NAILS. THE TREE IS 183 FEET FROM THE STATION.  REFERENCES ARE 156
 HV0647'DEG OFF OF LOWER CEDAR POINT LIGHT.
 HV0647'
 HV0647'NOTE--THIS BRASS DISK WAS MARKED GUNS BY THE U.S. COAST AND
 HV0647'GEODETIC SURVEY AND IS A PROMINENT POINT WHICH WAS USED A FEW
 HV0647'YEARS AGO IN THEIR AERIAL TOPOGRAPHY SURVEY ALONG THE POTOMAC RIVER.
 HV0647
 HV0647                          STATION RECOVERY (1960)
 HV0647
 HV0647'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV0647'STATION DESTROYED.  STATION WAS FOUND LYING IN THREE FEET OF WATER.
 HV0647
 HV0647                          STATION RECOVERY (1961)
 HV0647
 HV0647'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (HTF)
 HV0647'MARKER COULD NOT BE FOUND.  THE BLAZED MULBERRY TREE HAS
 HV0647'DISAPPEARED.  ALSO THE LOMBARDY POPLAR IS MISSING.  THE SHORELINE
 HV0647'ALSO LOOKS AS IF IT COULD HAVE CHANGED IN THE PAST SEVERAL YEARS.
 HV0647'SET UP ON PICCO 2 AND SHOT A LINE ACROSS THE POINT (DIRECTION OF
 HV0647'GUNS) AND LOOKED ALONG THIS LINE, BUT HAD NO SUCCESS.
 HV0647
 HV0647                          STATION RECOVERY (1968)
 HV0647
 HV0647'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1968
 HV0647'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7061 ***********************************************************************
 HV7061  DESIGNATION -  GUST 1908
 HV7061  PID         -  HV7061
 HV7061  STATE/COUNTY-  MD/CHARLES
 HV7061  COUNTRY     -  US
 HV7061  USGS QUAD   -  ROCK POINT (2016)
 HV7061
 HV7061                         *CURRENT SURVEY CONTROL
 HV7061  ______________________________________________________________________
 HV7061* NAD 83(1993) POSITION- 38 18 57.42154(N) 076 51 05.47936(W)   ADJUSTED
 HV7061* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7061  ______________________________________________________________________
 HV7061  GEOID HEIGHT    -        -33.667 (meters)                     GEOID18
 HV7061  LAPLACE CORR    -         -1.58  (seconds)                    DEFLEC18
 HV7061  HORZ ORDER      -  THIRD
 HV7061
 HV7061.The horizontal coordinates were established by classical geodetic methods
 HV7061.and adjusted by the National Geodetic Survey in November 1994.
 HV7061
 HV7061.The orthometric height was scaled from a topographic map.
 HV7061
 HV7061.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7061.GEOID18 height accuracy estimate available here.
 HV7061
 HV7061.Click photographs - Photos may exist for this station.
 HV7061
 HV7061.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7061
 HV7061. The following values were computed from the NAD 83(1993) position.
 HV7061
 HV7061;                    North         East     Units Scale Factor Converg.
 HV7061;SPC MD       -    72,083.947   412,984.993   MT  0.99999726   +0 05 35.5
 HV7061;SPC MD       -   236,495.42  1,354,934.93   sFT  0.99999726   +0 05 35.5
 HV7061;SPC VA N     - 2,073,363.334 3,644,153.268   MT  0.99996216   +1 01 43.8
 HV7061;SPC VA N     - 6,802,359.54 11,955,859.51   sFT  0.99996216   +1 01 43.8
 HV7061;UTM  18      - 4,242,493.151   338,134.640   MT  0.99992267   -1 08 53.5
 HV7061
 HV7061!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7061!SPC MD       -   1.00000533  x   0.99999726  =   1.00000259
 HV7061!SPC VA N     -   1.00000533  x   0.99996216  =   0.99996748
 HV7061!UTM  18      -   1.00000533  x   0.99992267  =   0.99992799
 HV7061
 HV7061:                Primary Azimuth Mark                     Grid Az
 HV7061:SPC MD       -  HEDNEY 1908                              165 55 47.9
 HV7061:SPC VA N     -  HEDNEY 1908                              164 59 39.6
 HV7061:UTM  18      -  HEDNEY 1908                              167 10 16.9
 HV7061
 HV7061_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3813442493(NAD 83)
 HV7061
 HV7061|---------------------------------------------------------------------|
 HV7061| PID    Reference Object                     Distance      Geod. Az  |
 HV7061|                                                           dddmmss.s |
 HV7061| HV7053 HEDNEY 1908                         APPROX. 1.9 KM 1660123.4 |
 HV7061|---------------------------------------------------------------------|
 HV7061
 HV7061                          SUPERSEDED SURVEY CONTROL
 HV7061
 HV7061  NAD 83(1991)-  38 18 57.42105(N)    076 51 05.48412(W) AD(       ) 3
 HV7061  NAD 83(1986)-  38 18 57.42149(N)    076 51 05.49509(W) AD(       ) 3
 HV7061  NAD 27      -  38 18 56.91800(N)    076 51 06.56700(W) AD(       ) 3
 HV7061  USSD        -  38 18 57.62900(N)    076 51 06.67000(W) AD(       ) 3
 HV7061
 HV7061.Superseded values are not recommended for survey control.
 HV7061
 HV7061.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7061.See file dsdata.pdf to determine how the superseded data were derived.
 HV7061
 HV7061_MARKER: H = DRILL HOLE
 HV7061_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7061_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7061+STABILITY: SURFACE MOTION
 HV7061
 HV7061  HISTORY     - Date     Condition        Report By
 HV7061  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7061  HISTORY     - 1942     GOOD             CGS
 HV7061  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV7061
 HV7061                          STATION DESCRIPTION
 HV7061
 HV7061'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7061'ON THE WESTERN SHORE OF WICOMICO RIVER, ON WINDMILL POINT, ABOUT
 HV7061'3/4 MILE N OF THE MOUTH OF HEDNEYS CREEK AND OPPOSITE THE MOUTH OF
 HV7061'MANAHOWIC CREEK, ON A SHELL AND GRAVEL POINT BORDERED BY PERSIMMON
 HV7061'AND CEDAR TREES, ABOUT 2 FEET ABOVE HIGH WATER, 12 YARDS NW OF
 HV7061'SHORE, 16 YARDS S OF SHORE, AND 28 YARDS WSW OF SHORE ON EXTREME
 HV7061'END OF POINT.  STATION MARK IS CENTER OF STANDARD MONUMENT OF
 HV7061'MARYLAND SHELL FISH SURVVEY, WHICH IS MADE OF CONCRETE AND IS 2
 HV7061'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP IS
 HV7061'MARKED WITH THE SAME MOLD AND SHOWS A CENTER HOLE SURROUNDED BY A
 HV7061'TRIANGLE, WITH COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE
 HV7061'VERTEX, AND THE LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HV7061'TRIANGLE.  THE CENTER HOLE IS ALWAYS AT THE CENTER OF THE MONUMENT
 HV7061'AND IF THE MARKING HAS BEEN BROKEN OFF WITHOUT DISTURBING THE
 HV7061'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS THE LOCATION
 HV7061'OF THE STATION.  THE MONUMENT IS SET VERTICALLY IN THE GROUND,
 HV7061'WITH TOP PROJECTING ABOUT 3 TO 5 INCHES ABOVE THE SURFACE.
 HV7061'DISTANCES AND BEARINGS FROM THE STATION TO VARIOUS POINTS OF
 HV7061'REFERENCE ARE AS FOLLOWS--NEAR PEAK OF ROOF OF HOUSE WITH 2
 HV7061'CHIMNEYS, 5/8 MILE, S 11 DEG 52 MIN W.  NAIL IN BLAZE IN 4-INCH
 HV7061'CEDAR TREE, 5.90 METERS (19.36 FEET), S 44 DEG 23 MIN W.  NAIL IN
 HV7061'BLAZE IN 10-INCH CEDAR TREE, 16.18 METERS (53.1 FEET), N 38 DEG 48
 HV7061'MIN W.  NAIL IN BLAZE IN 8-INCH PERSIMMON TREE, 7.95 METERS (26.08
 HV7061'FEET), N 26 DEG 31 MIN E.  NEAR PEAK OF ROOF OF HOUSE ON CHAPTICO
 HV7061'WHARF, 1-1/4 MILES, N 55 DEG 41 MIN E.  CHIMNEY ON LEFT SIDE OF
 HV7061'LARGE HOUSE, 1-3/8 MILES, N 78 DEG 27 MIN E.  CHIMNEY ON MIDDLE OF
 HV7061'LYON HOUSE, 1-3/4 MILES, S 58 DEG 27 MIN E.
 HV7061
 HV7061                          STATION RECOVERY (1942)
 HV7061
 HV7061'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7061'STATION RECOVERED AS DESCRIBED WITH THE EXCEPTIONS NOTED BELOW--
 HV7061'
 HV7061'(1) THE STATION IS 18 YARDS WSW OF SHORE, INSTEAD OF 28 YARDS.
 HV7061'
 HV7061'(2) THE MONUMENT PROJECTS 18 INCHES ABOVE THE GROUND, INSTEAD OF
 HV7061'3 TO 5 INCHES.
 HV7061'
 HV7061'(3) THE STATION IS 6.1 METERS FROM 4-INCH CEDAR TREE, INSTEAD OF
 HV7061'5.9 METERS.
 HV7061'
 HV7061'(4) THE 10-INCH CEDAR TREE AND 8-INCH PERSIMMON TREES REFERRED TO
 HV7061'IN THE DESCRIPTION ARE GONE.
 HV7061
 HV7061                          STATION RECOVERY (1961)
 HV7061
 HV7061'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RMS)
 HV7061'THE POINT HAS BEEN WASHED AWAY.  THE STATION WAS FOUND LYING ON
 HV7061'THE BEACH.  THIS STATION SHOULD BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5806 ***********************************************************************
 HV5806  DESIGNATION -  GUSTA
 HV5806  PID         -  HV5806
 HV5806  STATE/COUNTY-  MD/TALBOT
 HV5806  COUNTRY     -  US
 HV5806  USGS QUAD   -  QUEENSTOWN (2016)
 HV5806
 HV5806                         *CURRENT SURVEY CONTROL
 HV5806  ______________________________________________________________________
 HV5806* NAD 83(1991) POSITION- 38 52 37.43502(N) 076 09 43.84672(W)   ADJUSTED
 HV5806* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5806  ______________________________________________________________________
 HV5806  GEOID HEIGHT    -        -34.243 (meters)                     GEOID18
 HV5806  LAPLACE CORR    -         -4.34  (seconds)                    DEFLEC18
 HV5806  HORZ ORDER      -  THIRD
 HV5806
 HV5806.The horizontal coordinates were established by classical geodetic methods
 HV5806.and adjusted by the National Geodetic Survey in January 1992.
 HV5806
 HV5806.The orthometric height was scaled from a topographic map.
 HV5806
 HV5806.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5806.GEOID18 height accuracy estimate available here.
 HV5806
 HV5806.Click photographs - Photos may exist for this station.
 HV5806
 HV5806.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5806
 HV5806. The following values were computed from the NAD 83(1991) position.
 HV5806
 HV5806;                    North         East     Units Scale Factor Converg.
 HV5806;SPC MD       -   134,692.973   472,698.121   MT  0.99994985   +0 31 33.0
 HV5806;SPC MD       -   441,905.20  1,550,843.75   sFT  0.99994985   +0 31 33.0
 HV5806;UTM  18      - 4,303,776.298   399,189.433   MT  0.99972514   -0 43 46.2
 HV5806
 HV5806!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5806!SPC MD       -   1.00000525  x   0.99994985  =   0.99995510
 HV5806!UTM  18      -   1.00000525  x   0.99972514  =   0.99973039
 HV5806
 HV5806_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9918903776(NAD 83)
 HV5806
 HV5806|---------------------------------------------------------------------|
 HV5806| PID    Reference Object                     Distance      Geod. Az  |
 HV5806|                                                           dddmmss.s |
 HV5806| HV5756 NODIM                               272.632 METERS 02108     |
 HV5806| HV5690 SYLVIA                              376.335 METERS 20257     |
 HV5806| HV5786 TOBINE                              331.289 METERS 27846     |
 HV5806|---------------------------------------------------------------------|
 HV5806
 HV5806                          SUPERSEDED SURVEY CONTROL
 HV5806
 HV5806  NAD 83(1986)-  38 52 37.43048(N)    076 09 43.85982(W) AD(       ) 3
 HV5806  NAD 27      -  38 52 36.99000(N)    076 09 45.04200(W) AD(       ) 3
 HV5806  USSD        -  38 52 37.38400(N)    076 09 44.81400(W) AD(       ) 3
 HV5806
 HV5806.Superseded values are not recommended for survey control.
 HV5806
 HV5806.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5806.See file dsdata.pdf to determine how the superseded data were derived.
 HV5806
 HV5806_MARKER: H = DRILL HOLE
 HV5806_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5806_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5806
 HV5806  HISTORY     - Date     Condition        Report By
 HV5806  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5806  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5806
 HV5806                          STATION DESCRIPTION
 HV5806
 HV5806'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5806'STATION IS ON THE SOUTHEASTERN SHORE OF THE BRANCH OF WYE RIVER
 HV5806'BOUNDING WYE ISLAND ON THE S, ABOUT 7/8 MILE NNE OF ENTRANCE TO
 HV5806'LLOYD CREEK, IN A CULTIVATED FIELD, ABOUT 10 FEET ABOVE HIGH
 HV5806'WATER, 8 YARDS E OF EDGE OF BANK, 12 YARDS SE OF EDGE OF BANK, 17
 HV5806'YARDS NE OF EDGE OF BANK, 35 YARDS NNE OF A DEPRESSION, AND 65
 HV5806'YARDS SW OF END OF CUT IN BANK.  STATION IS MARKED BY A HOLE IN
 HV5806'THE CENTER OF THE TOP OF THE MARYLAND SHELL FISH SURVEY STANDARD
 HV5806'MONUMENT, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5806'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 HV5806'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2
 HV5806'INCHES BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO
 HV5806'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--BALDWIN WINDMILL, 3/8
 HV5806'MILE, S 13 DEG 10 MIN W.  LEFT TANGENT OF HOUSE ON BRUFFS ISLAND,
 HV5806'2 MILES, S 49 DEG 3 MIN W.  LEFT CHIMNEY OF HOUSE, 1-3/8 MILES, S
 HV5806'68 DEG 12 MIN W.  PEAK BETWEEN TWO CHIMNEYS OF HOUSE, 2 MILES, S
 HV5806'74 DEG 39 MIN W.  RIGHT PEAK OF HOUSE,1 MILE, N 76 DEG 10 MIN W.
 HV5806'CUPOLA OF BARN, 5/8 MILE, N 68 DEG 17 MIN W.  LEFT CORNER OF
 HV5806'HOUSE, 3/4 MILE, N 1 DEG 23 MIN W. RIGHT PEAK OF LARGE BARN, 3/8
 HV5806'MILE, S 24 DEG 54 MIN E.
 HV5806
 HV5806                          STATION RECOVERY (1940)
 HV5806
 HV5806'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5806'STATION MARK SEARCHED FOR BUT NOT FOUND.  INDICATIONS ARE THAT
 HV5806'MARK WAS LOCATED IN WHAT IS NOW A CULTIVATED FIELD.
 HV5806'
 HV5806'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5126 ***********************************************************************
 JV5126  DESIGNATION -  GUT
 JV5126  PID         -  JV5126
 JV5126  STATE/COUNTY-  MD/KENT
 JV5126  COUNTRY     -  US
 JV5126  USGS QUAD   -  ROCK HALL (2016)
 JV5126
 JV5126                         *CURRENT SURVEY CONTROL
 JV5126  ______________________________________________________________________
 JV5126* NAD 83(1991) POSITION- 39 08 51.13861(N) 076 08 49.89336(W)   ADJUSTED
 JV5126* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5126  ______________________________________________________________________
 JV5126  GEOID HEIGHT    -        -33.437 (meters)                     GEOID18
 JV5126  LAPLACE CORR    -         -2.15  (seconds)                    DEFLEC18
 JV5126  HORZ ORDER      -  THIRD
 JV5126
 JV5126.The horizontal coordinates were established by classical geodetic methods
 JV5126.and adjusted by the National Geodetic Survey in January 1992.
 JV5126
 JV5126.The orthometric height was scaled from a topographic map.
 JV5126
 JV5126.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5126.GEOID18 height accuracy estimate available here.
 JV5126
 JV5126.Click photographs - Photos may exist for this station.
 JV5126
 JV5126.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5126
 JV5126. The following values were computed from the NAD 83(1991) position.
 JV5126
 JV5126;                    North         East     Units Scale Factor Converg.
 JV5126;SPC MD       -   164,729.090   473,718.027   MT  0.99996106   +0 32 06.9
 JV5126;SPC MD       -   540,448.69  1,554,189.89   sFT  0.99996106   +0 32 06.9
 JV5126;UTM  18      - 4,333,775.882   400,867.853   MT  0.99972100   -0 43 27.5
 JV5126
 JV5126!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5126!SPC MD       -   1.00000528  x   0.99996106  =   0.99996634
 JV5126!UTM  18      -   1.00000528  x   0.99972100  =   0.99972628
 JV5126
 JV5126:                Primary Azimuth Mark                     Grid Az
 JV5126:SPC MD       -  PHILIP                                   141 02 11.0
 JV5126:UTM  18      -  PHILIP                                   142 17 45.4
 JV5126
 JV5126_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0086733775(NAD 83)
 JV5126
 JV5126|---------------------------------------------------------------------|
 JV5126| PID    Reference Object                     Distance      Geod. Az  |
 JV5126|                                                           dddmmss.s |
 JV5126| JV5128 PHILIP                              477.495 METERS 1413417.9 |
 JV5126| JV5125 CLAY                                452.430 METERS 2534515.2 |
 JV5126| JV5121 LOVELY                              APPROX. 0.5 KM 3114454.5 |
 JV5126|---------------------------------------------------------------------|
 JV5126
 JV5126                          SUPERSEDED SURVEY CONTROL
 JV5126
 JV5126  NAD 83(1986)-  39 08 51.13293(N)    076 08 49.90468(W) AD(       ) 3
 JV5126  NAD 27      -  39 08 50.74200(N)    076 08 51.08500(W) AD(       ) 3
 JV5126  USSD        -  39 08 51.15000(N)    076 08 50.90200(W) AD(       ) 3
 JV5126
 JV5126.Superseded values are not recommended for survey control.
 JV5126
 JV5126.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5126.See file dsdata.pdf to determine how the superseded data were derived.
 JV5126
 JV5126_MARKER: H = DRILL HOLE
 JV5126_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5126_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5126+STABILITY: SURFACE MOTION
 JV5126
 JV5126  HISTORY     - Date     Condition        Report By
 JV5126  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5126  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5126
 JV5126                          STATION DESCRIPTION
 JV5126
 JV5126'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5126'STATION IS ON THE EASTERN SHORE OF EAST FORK OF LANGFORD CREEK, ON
 JV5126'POINT AT N SIDE OF ENTRANCE TO A SMALL COVE, ABOUT 1/4 MILE E OF
 JV5126'ENTRANCE TO LOVELY COVE AND 1/2 MILE NW OF ENTRANCE TO PHILIPS
 JV5126'CREEK, ON A MARSH POINT, ABOUT 1 FOOT ABOVE HIGH WATER, 15 YARDS
 JV5126'NE OF EDGE OF MARSH, 16 YARDS N OF EDGE OF MARSH, 21 YARDS E OF
 JV5126'EDGE OF MARSH, AND 65 YARDS NNW OF EXTREME POINT OF MARSH.
 JV5126'
 JV5126'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5126'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5126'2 FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES.  THE LETTERS
 JV5126'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5126'MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE
 JV5126'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5126'
 JV5126'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5126'FOLLOWS--CHIMNEY ON SW END OF SMALL HOUSE, 1 MILE, N 78 DEG 20
 JV5126'MIN W.  E END OF SMALL SHED, 1/2 MILE, N 33 DEG 22 MIN W. NEAR CORNER
 JV5126'OF BRICK HOUSE, 1/4 MILE, N 15 DEG 36 MIN E. SE PEAK OF BARN, 1-1/4
 JV5126'MILES, N 19 DEG 41 MIN E. CHIMNEY ON ELL OF HOUSE, 1/2 MILE, N 50
 JV5126'DEG 14 MIN E.  CHIMNEY ON W END OF HOUSE, 1-1/8 MILES, N 40 DEG 39
 JV5126'MIN W.  NE PEAK OF LONG BARN, 1-1/2 MILES, S 18 DEG 54 MIN E.
 JV5126
 JV5126                          STATION RECOVERY (1941)
 JV5126
 JV5126'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5126'SEARCHED FOR BUT NOT FOUND.  THIS POINT IS ON A HARD MARSH, AND
 JV5126'THOUGH THE DESCRIPTION IS INADEQUATE, THE PLOTTED POSITION SHOWED
 JV5126'ITS LOCATION.  WE MADE A THOROUGH SEARCH, SOUNDING IN ALL HOLES,
 JV5126'BUT WERE UNABLE TO LOCATE IT.  THE MARSH HAS BEEN MOWED, AND THE
 JV5126'MARKER MAY HAVE BEEN PULLED OUT.  RECOMMEND IT BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4937 ***********************************************************************
 HV4937  DESIGNATION -  GUT 2
 HV4937  PID         -  HV4937
 HV4937  STATE/COUNTY-  MD/CHARLES
 HV4937  COUNTRY     -  US
 HV4937  USGS QUAD   -  MOUNT VERNON (2019)
 HV4937
 HV4937                         *CURRENT SURVEY CONTROL
 HV4937  ______________________________________________________________________
 HV4937* NAD 83(1993) POSITION- 38 39 50.65056(N) 077 06 56.62706(W)   ADJUSTED
 HV4937* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV4937  ______________________________________________________________________
 HV4937  GEOID HEIGHT    -        -32.443 (meters)                     GEOID18
 HV4937  LAPLACE CORR    -         -1.59  (seconds)                    DEFLEC18
 HV4937  HORZ ORDER      -  THIRD
 HV4937
 HV4937.The horizontal coordinates were established by classical geodetic methods
 HV4937.and adjusted by the National Geodetic Survey in November 1994.
 HV4937
 HV4937.The orthometric height was scaled from a topographic map.
 HV4937
 HV4937.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4937.GEOID18 height accuracy estimate available here.
 HV4937
 HV4937.Click photographs - Photos may exist for this station.
 HV4937
 HV4937.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4937
 HV4937. The following values were computed from the NAD 83(1993) position.
 HV4937
 HV4937;                    North         East     Units Scale Factor Converg.
 HV4937;SPC MD       -   110,721.999   389,927.956   MT  0.99995664   -0 04 21.5
 HV4937;SPC MD       -   363,260.43  1,279,288.64   sFT  0.99995664   -0 04 21.5
 HV4937;SPC VA N     - 2,111,618.710 3,620,468.564   MT  0.99994871   +0 51 50.2
 HV4937;SPC VA N     - 6,927,869.05 11,878,153.95   sFT  0.99994871   +0 51 50.2
 HV4937;UTM  18      - 4,281,622.963   315,922.843   MT  1.00001728   -1 19 19.8
 HV4937
 HV4937!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4937!SPC MD       -   1.00000513  x   0.99995664  =   0.99996177
 HV4937!SPC VA N     -   1.00000513  x   0.99994871  =   0.99995384
 HV4937!UTM  18      -   1.00000513  x   1.00001728  =   1.00002241
 HV4937
 HV4937:                Primary Azimuth Mark                     Grid Az
 HV4937:SPC MD       -  HALLOWING                                202 09 03.9
 HV4937:SPC VA N     -  HALLOWING                                201 12 52.2
 HV4937:UTM  18      -  HALLOWING                                203 24 02.2
 HV4937
 HV4937_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1592281622(NAD 83)
 HV4937
 HV4937|---------------------------------------------------------------------|
 HV4937| PID    Reference Object                     Distance      Geod. Az  |
 HV4937|                                                           dddmmss.s |
 HV4937| DC6317 GUT 2 RM 3                           17.199 METERS 04531     |
 HV4937| DC6320 GUT 2 RM 2                                         05832     |
 HV4937| DC6319 GUT 2 RM 1                                         10516     |
 HV4937| DC6318 GUT 2 RM 4                           24.215 METERS 10734     |
 HV4937| HV5027 HALLOWING                           APPROX. 3.5 KM 2020442.4 |
 HV4937| HV4917 WHITE STONE POINT LIGHT             APPROX. 2.4 KM 3440657.6 |
 HV4937|---------------------------------------------------------------------|
 HV4937
 HV4937                          SUPERSEDED SURVEY CONTROL
 HV4937
 HV4937  NAD 83(1991)-  38 39 50.64830(N)    077 06 56.63009(W) AD(       ) 3
 HV4937  NAD 83(1986)-  38 39 50.64903(N)    077 06 56.64184(W) AD(       ) 3
 HV4937  NAD 27      -  38 39 50.22600(N)    077 06 57.72200(W) AD(       ) 3
 HV4937
 HV4937.Superseded values are not recommended for survey control.
 HV4937
 HV4937.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4937.See file dsdata.pdf to determine how the superseded data were derived.
 HV4937
 HV4937_MARKER: N = NAIL
 HV4937_SETTING: 0 = UNSPECIFIED SETTING
 HV4937
 HV4937  HISTORY     - Date     Condition        Report By
 HV4937  HISTORY     - 1926     MONUMENTED       CGS
 HV4937  HISTORY     - 1927     GOOD             CGS
 HV4937  HISTORY     - 1928     GOOD             CGS
 HV4937  HISTORY     - 1938     GOOD             CGS
 HV4937  HISTORY     - 1959     GOOD             CGS
 HV4937
 HV4937                          STATION DESCRIPTION
 HV4937
 HV4937'DESCRIBED BY COAST AND GEODETIC SURVEY 1926 (FLP)
 HV4937'TRIANGULATION STATION GUT 2 IS A THIRD ORDER STATION, AND IS
 HV4937'SITUATED ON THE POTOMAC RIVER, OPPOSITE THE ENTRANCE TO GUNSTON
 HV4937'COVE, AND ABOUT 3200 YARDS BELOW MARSHALL HALL.  IT IS NEAR THE
 HV4937'HIGH-WATER LINE AT THE EXTREMITY OF A SMALL POINT WHICH MAKES OUT
 HV4937'A SHORT DISTANCE S OF A SMALL STREAM.  AN EXISTING PROPERTY
 HV4937'MONUMENT, OR A PREVIOUS SURVEY MARK WAS USED FOR THE STATION
 HV4937'MARK.  THIS STATION MARK IS THE CENTER OF A CEMENT-FILLED
 HV4937'1-INCH IRON PIPE EMBEDDED IN A CYLINDRICAL BLOCK OF CONCRETE
 HV4937'ENCASED IN A SHEET IRON FORM, ABOUT 10 INCHES IN DIAMETER.  A
 HV4937'SMALL TACK IS EMBEDDED NEAR THE CENTER OF THE TOP SURFACE OF
 HV4937'THE CONCRETE INSIDE THE PIPE.  THE STATION MARK IS ABOUT
 HV4937'1.5 METERS OUTSIDE OF THE HIGH-WATER LINE, AND IS COVERED TO
 HV4937'A DEPTH OF 2 OR 3 INCHES AT HIGH WATER.  GUT 2 IS WITHIN 20
 HV4937'METERS OF THE LOCATION OF GUT 1902, WHICH WAS SEARCHED FOR
 HV4937'BUT NOT FOUND.
 HV4937'
 HV4937'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE.
 HV4937'WITNESS MARK IS A TREE MARKED WITH A
 HV4937'TRIANGULAR BLAZE WITH A NAIL AT THE CENTER AND EACH APEX OF THE
 HV4937'TRIANGLE.
 HV4937'
 HV4937'REFERENCE MARK NO.1 IS A STANDARD BRASS REFERENCE MARK SET INTO
 HV4937'THE TOP SURFACE OF A CYLINDRICAL CONCRETE MONUMENT ABOUT 10 INCHES
 HV4937'IN DIAMETER, AND ABOUT 28 INCHES IN HEIGHT EMBEDDED IN THE GROUND
 HV4937'WITH ITS TOP SURFACE NEARLY FLUSH WITH THE SURFACE OF THE
 HV4937'GROUND.  THE DISK IS STAMPED R.M.NO.1-1926, AND ALSO CARRIES THE
 HV4937'NAME OF THE STATION (GUT 2) THE ARROW POINTS TOWARD THE STATION.
 HV4937'
 HV4937'REFERENCE MARK NO.2 IS SIMILAR TO REFERENCE MARK NO.1 EXCEPT
 HV4937'THAT THE CONCRETE CYLINDER IS ABOUT 2 INCHES LESS IN HEIGHT.  THE
 HV4937'STANDARD BRASS REFERENCE MARK IS STAMPED WITH THE NAME OF THE
 HV4937'STATION AND REFERENCE MARK NO.2-1926.  THE ARROW POINTS TOWARD
 HV4937'THE STATION.
 HV4937'
 HV4937'WITNESS MARK NO.1 IS A TRIANGULAR BLAZE CUT INTO THE TRUNK OF A
 HV4937'TREE SITUATED INSHORE FROM THE STATION MARK.  THE TRUNK IS ABOUT
 HV4937'14 INCHES IN DIAMETER AT THE GROUND.  THE BLAZE IS ABOUT 5 FEET
 HV4937'ABOVE THE GROUND ON THE SIDE OF THE TREE TOWARD THE STATION
 HV4937'MARK.  A NAIL WAS DRIVEN FLUSH IN THE CENTER OF THE BLAZE FOR A
 HV4937'POINT OF REFERENCE.
 HV4937'
 HV4937'IT IS UNCERTAIN WHETHER THE DISTANCES GIVEN ARE IN METERS OR IN
 HV4937'FEET.
 HV4937'
 HV4937'HEIGHT OF SIGNAL ABOVE STATION MARK - 3.5 METERS.
 HV4937
 HV4937                          STATION RECOVERY (1927)
 HV4937
 HV4937'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1927 (FLP)
 HV4937'TRIANGULATION STATION MARK, BOTH REFERENCE MARKS, AND WITNESS MARK
 HV4937'WERE ALL FOUND TO BE IN GOOD CONDITION.
 HV4937'
 HV4937'ORIGINAL DESCRIPTION APPEARS TO HAVE BEEN ADEQUATE.
 HV4937'
 HV4937'NO NEW MARKS WERE ESTABLISHED.
 HV4937
 HV4937                          STATION RECOVERY (1928)
 HV4937
 HV4937'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4937'STATION RECOVERED AS DESCRIBED AND FOUND IN GOOD CONDITION ALTHOUGH
 HV4937'HIGH WATER WASHES OVER MARK.  TRIPOD STILL STANDING OVER SIGNAL.
 HV4937
 HV4937                          STATION RECOVERY (1938)
 HV4937
 HV4937'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV4937'STATION RECOVERED.  REFERENCE MARKS AND WITNESS MARK NOT SEARCHED
 HV4937'FOR.
 HV4937
 HV4937                          STATION RECOVERY (1959)
 HV4937
 HV4937'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (CAS)
 HV4937'STATION FOUND IN GOOD CONDITION AND AS DESCRIBED IN 1926.  R.M. 1
 HV4937'AND 2 AND WITNESS MARK NO 1 NOT FOUND.  TWO R.M.S WERE SET.  STATION
 HV4937'DESCRIPTION IS ADEQUATE WITH FOLLOWING ADDITIONS.
 HV4937'
 HV4937'STATION PROJECTS 18 INCHES AND SETS 7 FEET SOUTHWEST OF A CLUMP
 HV4937'OF OAK TREES AND ON THE H.W.L.
 HV4937'
 HV4937'R.M. NO 3 LOCATED NORTHEAST OF THE STATION ALONG SHORELINE 4 FEET
 HV4937'EAST OF A TWIN OAK TREE THAT IS ON EDGE OF THE CUT BANK.  IT IS
 HV4937'95 FEET EAST OF THE MOUTH OF A SMALL CREEK AT THE RIVERS
 HV4937'EDGE.  THIS CREEK IS SOME 90 FEET NORTH OF THE STATION GUT 2.  SET
 HV4937'IN A HONEYSUCKLE COVERED AREA, THE MONUMENT, PROJECTS
 HV4937'2 INCHES AND THE DISC IS STAMPED GUT 2 NO 3 1926.
 HV4937'
 HV4937'R.M. NO 4 LOCATED EAST OF THE STATION 12 FEET NORTH OF H.W.L. AND
 HV4937'6 FEET NORTH OF SANDY BEACH AND THE CUT BANK IN A GRASS AND
 HV4937'HONEYSUCKLE PATCH.  THE MONUMENT, PROJECTS 2 INCHES
 HV4937'AND THE DISC IS STAMPED GUT 2 NO 4 1926.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7423 ***********************************************************************
 HV7423  DESIGNATION -  GUTRIDGE RESET
 HV7423  PID         -  HV7423
 HV7423  STATE/COUNTY-  MD/CHARLES
 HV7423  COUNTRY     -  US
 HV7423  USGS QUAD   -  LA PLATA (2016)
 HV7423
 HV7423                         *CURRENT SURVEY CONTROL
 HV7423  ______________________________________________________________________
 HV7423* NAD 83(1993) POSITION- 38 35 07.28465(N) 076 56 46.59177(W)   ADJUSTED
 HV7423* NAVD 88 ORTHO HEIGHT -    62.    (meters)      203.    (feet) SCALED
 HV7423  ______________________________________________________________________
 HV7423  GEOID HEIGHT    -        -32.934 (meters)                     GEOID18
 HV7423  LAPLACE CORR    -         -5.38  (seconds)                    DEFLEC18
 HV7423  HORZ ORDER      -  SECOND
 HV7423
 HV7423.The horizontal coordinates were established by classical geodetic methods
 HV7423.and adjusted by the National Geodetic Survey in November 1994.
 HV7423
 HV7423.The orthometric height was scaled from a topographic map.
 HV7423
 HV7423.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7423.GEOID18 height accuracy estimate available here.
 HV7423
 HV7423.Click photographs - Photos may exist for this station.
 HV7423
 HV7423.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7423
 HV7423. The following values were computed from the NAD 83(1993) position.
 HV7423
 HV7423;                    North         East     Units Scale Factor Converg.
 HV7423;SPC MD       -   101,979.575   404,680.826   MT  0.99996262   +0 02 01.4
 HV7423;SPC MD       -   334,577.99  1,327,690.34   sFT  0.99996262   +0 02 01.4
 HV7423;UTM  18      - 4,272,560.892   330,482.071   MT  0.99995389   -1 12 50.9
 HV7423
 HV7423!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7423!SPC MD       -   0.99999548  x   0.99996262  =   0.99995810
 HV7423!UTM  18      -   0.99999548  x   0.99995389  =   0.99994937
 HV7423
 HV7423:                Primary Azimuth Mark                     Grid Az
 HV7423:SPC MD       -  WALDORF ATT MICROWAVE                    038 49 03.7
 HV7423:UTM  18      -  WALDORF ATT MICROWAVE                    040 03 56.0
 HV7423
 HV7423_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3048272560(NAD 83)
 HV7423
 HV7423|---------------------------------------------------------------------|
 HV7423| PID    Reference Object                     Distance      Geod. Az  |
 HV7423|                                                           dddmmss.s |
 HV7423| CX2829 GUTRIDGE RM 1                        32.000 METERS 02817     |
 HV7423| HV7422 WALDORF ATT MICROWAVE               APPROX. 3.6 KM 0385105.1 |
 HV7423| CX2832 GUTRIDGE RM 4                        18.053 METERS 06933     |
 HV7423| HV7425 LA PLATA USA TALL RELAY TOWER       APPROX. 4.0 KM 1840640.2 |
 HV7423| HV7424 LA PLATA USA SMALL RELAY TOWER      APPROX. 4.0 KM 1852650.0 |
 HV7423| HV7421 LA PLATA MUN TANK                   APPROX. 6.9 KM 2043847.6 |
 HV7423| CX2830 GUTRIDGE RM 2                        59.095 METERS 29510     |
 HV7423| CX2831 GUTRIDGE RM 3                        23.378 METERS 30324     |
 HV7423| CX2833 GUTRIDGE RM 5                        74.771 METERS 34831     |
 HV7423| CX2828 GUTRIDGE AZ MK                                     3561602.7 |
 HV7423|---------------------------------------------------------------------|
 HV7423
 HV7423                          SUPERSEDED SURVEY CONTROL
 HV7423
 HV7423  NAD 83(1991)-  38 35 07.28353(N)    076 56 46.59303(W) AD(       ) 2
 HV7423  NAD 83(1986)-  38 35 07.28389(N)    076 56 46.60690(W) AD(       ) 2
 HV7423  NAD 27      -  38 35 06.85625(N)    076 56 47.70388(W) AD(       ) 2
 HV7423
 HV7423.Superseded values are not recommended for survey control.
 HV7423
 HV7423.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7423.See file dsdata.pdf to determine how the superseded data were derived.
 HV7423
 HV7423_MARKER: DH = HORIZONTAL CONTROL DISK
 HV7423_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7423_STAMPING: GUTRIDGE 1943 1975
 HV7423_MARK LOGO: NGS
 HV7423_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7423+STABILITY: SURFACE MOTION
 HV7423
 HV7423  HISTORY     - Date     Condition        Report By
 HV7423  HISTORY     - 1943     MONUMENTED       CGS
 HV7423  HISTORY     - 1957     GOOD             CGS
 HV7423  HISTORY     - 1965     SEE DESCRIPTION  CGS
 HV7423  HISTORY     - 1972     MARK NOT FOUND   MDDT
 HV7423  HISTORY     - 1974     SEE DESCRIPTION  LOCENG
 HV7423  HISTORY     - 1975     SEE DESCRIPTION  NGS
 HV7423
 HV7423                          STATION DESCRIPTION
 HV7423
 HV7423'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7423'THE STATION IS LOCATED ABOUT 3-1/2 MILES SOUTHWEST OF WALDORF ON THE
 HV7423'GROUNDS OF THE J.H. GUTRIDGE FARM YARD.  IT IS 115 FEET SOUTH OF THE
 HV7423'FARM HOUSE AND ABOUT 15 FEET NORTH OF THE SOUTH EDGE OF THE FLAT
 HV7423'GROUND.  IT IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED
 HV7423'GUTRIDGE 1943.
 HV7423'
 HV7423'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS AND BRONZE DISKS
 HV7423'SET IN CONCRETE AS DESCRIBED.
 HV7423'
 HV7423'REFERENCE MARK NO. 1 IS JUST OUTSIDE OF THE SOUTH FENCE OF THE LAWN.
 HV7423'IT PROJECTS 4 INCHES AND THE DISK IS STAMPED GUTRIDGE NO. 1 1943.
 HV7423'
 HV7423'REFERENCE MARK NO. 2 IS AT THE WEST SIDE OF A SMALL FIELD WEST
 HV7423'NORTHWEST OF THE STATION.  IT PROJECTS ABOUT 6 INCHES AND THE DISK
 HV7423'IS STAMPED GUTRIDGE NO. 2 1943.
 HV7423'
 HV7423'THE AZIMUTH MARK IS LOCATED 0.25 MILE NORTHWEST OF THE STATION IN
 HV7423'FRONT OF THE FARM HOME OF J.E. ROBY.  IT IS 12 FEET SOUTH OF THE
 HV7423'PROJECTED PLANE OF THE SOUTH WALL OF THE HOUSE, 10 FEET WEST OF A
 HV7423'LIGHT LINE POLE AND 34 FEET WEST OF THE EAST FENCE OF THE LAWN.
 HV7423'IT PROJECTS 4 INCHES AND THE DISK IS STAMPED GUTRIDGE 1943.  TO
 HV7423'REACH FROM THE HIGHWAY IN FRONT OF THE GUTRIDGE HOME, GO NORTH
 HV7423'FOR 0.15 MILE TO FARM ROAD LEFT.  HERE TURN LEFT AND GO 0.2 MILE
 HV7423'TO A WHITE HOUSE AND THE AZIMUTH MARK AS DESCRIBED.
 HV7423'
 HV7423'TO REACH THE STATION FROM WALDORF GO SOUTH ON U.S. HIGHWAY 301
 HV7423'FOR 3.3 MILES (0.1 MILE SOUTH OF WHITE PLAINS POST OFFICE).  TURN
 HV7423'LEFT INTO FARM ROAD AND GO 0.05 MILE TO THE GUTRIDGE FARMHOUSE AND
 HV7423'THE STATION AS DESCRIBED.
 HV7423'
 HV7423'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT POMFRET 1934.
 HV7423'
 HV7423'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT PORT 1942.
 HV7423'
 HV7423'A 103-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT BEALLE 1934 ECC.
 HV7423'
 HV7423'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WALDORF.
 HV7423'
 HV7423'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT GARDNER.
 HV7423'
 HV7423'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT MUDD.
 HV7423
 HV7423                          STATION RECOVERY (1957)
 HV7423
 HV7423'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV7423'STATION WAS RECOVERED AS DESCRIBED, AND ALL MARKS WERE FOUND TO
 HV7423'BE IN GOOD CONDITION, EXCEPT REFERENCE MARK 2 WHICH WAS NOT
 HV7423'RECOVERED.  REFERENCE MARK 3 WAS ESTABLISHED.  THE MARK PROJECTS
 HV7423'ABOUT 4 IN. AND THE DISK IS STAMPED GUTRIDGE NO 3 1943.
 HV7423'A DIFFERENCE WAS FOUND IN THE DISTANCE TO REFERENCE MARK
 HV7423'1 AND IN THE DIRECTION TO REFERENCE MARK 1 AND THE AZIMUTH
 HV7423'MARK.  ORIGINAL DESCRIPTION IS ADEQUATE EXCEPT THAT U.S.
 HV7423'HIGHWAY 301 IS NOW A FOUR-LANE HIGHWAY.
 HV7423'
 HV7423'1957 OBSERVATIONS TAKEN FROM A 90-FT. TOWER.
 HV7423
 HV7423                          STATION RECOVERY (1965)
 HV7423
 HV7423'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (GM)
 HV7423'STATION FOUND UPROOTED DUE TO EXTENSIVE GRADING.  UNDERGROUND MARK
 HV7423'WAS NOT FOUND, BUT STILL MIGHT POSSIBLY BE IN PLACE.  REFERENCE MARK
 HV7423'NO. 3 1943 WAS NOT FOUND.  REFERENCE MARK NO. 1 FOUND IN GOOD
 HV7423'CONDITION.  AZIMUTH MARK RECOVERED IN GOOD CONDITION.  IT IS
 HV7423'LOCATED 9 PACES EAST OF EAST LAWN FENCE AND 12 FEET NORTHEAST OF
 HV7423'SMALL PEACH TREE.
 HV7423
 HV7423                          STATION RECOVERY (1972)
 HV7423
 HV7423'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1972
 HV7423'STATION MARK, RMS NOS 1 AND 3 DESTROYED.  AZIMUTH MARK RECOVERED
 HV7423'IN GOOD CONDITION.  AN INVERSE PULL FROM A TRAVERSE POINT TO THE
 HV7423'STATION POSITION FILL THAT HAS BEEN GRADED APPROX. 10-12
 HV7423'FEET LOWER IN RECENT YEARS.
 HV7423'
 HV7423'DISTANCE AND DIRECTION FROM NEAREST TOWN--3-1/2 MILES SW OF
 HV7423'WILDORF MD.
 HV7423
 HV7423                          STATION RECOVERY (1974)
 HV7423
 HV7423'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1974 (SPB)
 HV7423'GUTRIDGE 1943 UNDERGROUND MONUMENT FOUND SURFACE MON. GONE
 HV7423'
 HV7423'AZIMUTH MARK BROKEN CONCRETE FOUND IN GENERAL AREA ASSUMED
 HV7423'DESTROYED
 HV7423'
 HV7423'REFERENCE MARKS ALL REFERENCE MARKS BELIEVED DESTROYED--ENTIRE
 HV7423'AREA HAS BEEN GRADED.  HOUSE AND FENCES GONE
 HV7423'
 HV7423'N AND C - NAIL AND CAP
 HV7423
 HV7423                          STATION RECOVERY (1975)
 HV7423
 HV7423'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HV7423'THE STATION SURFACE MARK, REFERENCE MARK 1, 2 AND 3 AND THE
 HV7423'AZIMUTH MARK WERE FOUND TO HAVE BEEN DESTROYED.  THE STATION
 HV7423'SUB-SURFACE MARK WAS FOUND IN GOOD CONDITION AND THERE WAS NO
 HV7423'EVIDENCE OF ANY MOVEMENT.  A NEW REFERENCE MARK 4 AND 5 WERE SET
 HV7423'AT THIS DATE.  THE WALDORF, AMERICAN TELEPHONE AND TELEGRAPH
 HV7423'RADIO RELAY TOWER IS VISIBLE FROM THE GROUND AND MAY BE USED AS
 HV7423'AN AZIMUTH FROM THIS STATION.  NO NEW AZIMUTH MARK WAS SET AT
 HV7423'THIS DATE.  A NEW SURFACE STATION DISK WAS SET.
 HV7423'
 HV7423'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HV7423'
 HV7423'THE STATION IS LOCATED ON THE WEST EDGE OF A SMALL KNOLL ABOUT
 HV7423'5 MILES NORTHEAST OF LA PLATA, 4 MILES SOUTHWEST OF WALDORF AND
 HV7423'1/4 MILE SOUTH OF WHITE PLAINS.  THE PROPERTY IS OWNED BY
 HV7423'MR. JOSEPH JACQUES, 9515 ACOLA STREET, SILVER SPRINGS,
 HV7423'MARYLAND.  MR. JACQUESS TELEPHONE NUMBER IS (202) 783 9075.
 HV7423'
 HV7423'TO REACH THE STATION FROM THE POST OFFICE IN WHITE PLAINS, GO
 HV7423'SOUTHWEST ON U.S. HIGHWAY 301 FOR 0.35 MILE TO A MOBILE OFFICE
 HV7423'ON THE LEFT AND THE STATION JUST SOUTH OF IT.
 HV7423'
 HV7423'THE STATION SURFACE MARK IS A STANDARD DISK STAMPED GUTRIDGE
 HV7423'1943 1975, SET IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT
 HV7423'WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS DIRECTLY
 HV7423'OVER THE OLD SUB-SURFACE DISK WHICH IS SET IN THE TOP OF A 8 INCH
 HV7423'MASS OF CONCRETE, 2-1/2 FEET BELOW THE SURFACE AND IT IS STAMPED
 HV7423'GUTRIDGE 1943.  THEY ARE 100 YARDS SOUTHWEST OF THE CENTER OF
 HV7423'U.S. HIGHWAY 301, 253.8 FEET SOUTHEAST OF A TELEPHONE POLE
 HV7423'NUMBERED 101, 185 FEET SOUTHWEST OF A 36-INCH OAK TREE 149
 HV7423'FEET EAST OF THE MOST SOUTH EDGE OF A SIGN, 84 FEET SOUTHEAST
 HV7423'OF THE SOUTHEAST CORNER OF THE OFFICE AND 2 FEET NORTHWEST OF
 HV7423'A WITNESS POST.
 HV7423'
 HV7423'REFERENCE MARK 4 IS A STANDARD DISK STAMPED GUTRIDGE 1943 NO 4
 HV7423'1975, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 HV7423'IS FLUSH WITH THE SURFACE.  IT IS 125 FEET SOUTHWEST OF THE OAK
 HV7423'TREE, 60 FEET EAST-NORTHEAST OF THE WITNESS POST AT THE STATION,
 HV7423'60 FEET NORTHEAST OF THE SOUTHEAST CORNER OF THE OFFICE AND 1.5
 HV7423'FEET SOUTHEAST OF A WITNESS POST.
 HV7423'
 HV7423'REFERENCE MARK 5 IS A STANDARD DISK STAMPED GUTRIDGE 1943 NO 5
 HV7423'1975, CEMENTED IN A DRILL HOLE IN THE SOUTH CURB FOR THE DRIVE
 HV7423'LEADING TO THE MOBILE OFFICE, IT PROJECTS 6 INCHES.  IT IS 247
 HV7423'FEET NORTHWEST OF THE WITNESS POST, 54.5 FEET SOUTHEAST OF THE
 HV7423'CENTER OF U.S. HIGHWAY 301 AND 16 FEET SOUTH OF THE CENTER OF
 HV7423'THE CENTER OF THE DRIVE.
 HV7423'
 HV7423'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV7423'1/4 MILE SOUTH OF WHITE PLAINS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0831 ***********************************************************************
 HV0831  DESIGNATION -  GWYNN
 HV0831  PID         -  HV0831
 HV0831  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0831  COUNTRY     -  US
 HV0831  USGS QUAD   -  BRANDYWINE (2016)
 HV0831
 HV0831                         *CURRENT SURVEY CONTROL
 HV0831  ______________________________________________________________________
 HV0831* NAD 83(1993) POSITION- 38 42 10.15462(N) 076 52 17.49187(W)   ADJUSTED
 HV0831* NAVD 88 ORTHO HEIGHT -    73.855 (meters)      242.31  (feet) ADJUSTED
 HV0831  ______________________________________________________________________
 HV0831  GEOID HEIGHT    -        -32.812 (meters)                     GEOID18
 HV0831  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 HV0831  DYNAMIC HEIGHT  -         73.813 (meters)      242.17  (feet) COMP
 HV0831  MODELED GRAVITY -    980,053.1   (mgal)                       NAVD 88
 HV0831
 HV0831  HORZ ORDER      -  FIRST
 HV0831  VERT ORDER      -  FIRST     CLASS II
 HV0831
 HV0831.The horizontal coordinates were established by classical geodetic methods
 HV0831.and adjusted by the National Geodetic Survey in November 1994.
 HV0831
 HV0831.The orthometric height was determined by differential leveling and
 HV0831.adjusted by the NATIONAL GEODETIC SURVEY
 HV0831.in June 1991.
 HV0831
 HV0831.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0831.GEOID18 height accuracy estimate available here.
 HV0831
 HV0831.Click photographs - Photos may exist for this station.
 HV0831
 HV0831.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0831
 HV0831.The dynamic height is computed by dividing the NAVD 88
 HV0831.geopotential number by the normal gravity value computed on the
 HV0831.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0831.degrees latitude (g = 980.6199 gals.).
 HV0831
 HV0831.The modeled gravity was interpolated from observed gravity values.
 HV0831
 HV0831. The following values were computed from the NAD 83(1993) position.
 HV0831
 HV0831;                    North         East     Units Scale Factor Converg.
 HV0831;SPC MD       -   115,025.029   411,175.173   MT  0.99995438   +0 04 50.3
 HV0831;SPC MD       -   377,377.95  1,348,997.21   sFT  0.99995438   +0 04 50.3
 HV0831;UTM  18      - 4,285,461.390   337,259.225   MT  0.99992615   -1 10 13.8
 HV0831
 HV0831!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0831!SPC MD       -   0.99999356  x   0.99995438  =   0.99994794
 HV0831!UTM  18      -   0.99999356  x   0.99992615  =   0.99991971
 HV0831
 HV0831:                Primary Azimuth Mark                     Grid Az
 HV0831:SPC MD       -  GWYNN AZ MK                              082 53 38.3
 HV0831:UTM  18      -  GWYNN AZ MK                              084 08 42.4
 HV0831
 HV0831_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3725985461(NAD 83)
 HV0831
 HV0831|---------------------------------------------------------------------|
 HV0831| PID    Reference Object                     Distance      Geod. Az  |
 HV0831|                                                           dddmmss.s |
 HV0831| HV0832 GWYNN RM 1                           38.990 METERS 03131     |
 HV0831| CX2834 GWYNN AZ MK                                        0825828.6 |
 HV0831| HV0830 GWYNN RM 2                           43.724 METERS 23933     |
 HV0831|---------------------------------------------------------------------|
 HV0831
 HV0831                          SUPERSEDED SURVEY CONTROL
 HV0831
 HV0831  NAD 83(1991)-  38 42 10.15430(N)    076 52 17.49209(W) AD(       ) 1
 HV0831  NAD 83(1986)-  38 42 10.15290(N)    076 52 17.50666(W) AD(       ) 1
 HV0831  NAD 27      -  38 42 09.73641(N)    076 52 18.60943(W) AD(       ) 1
 HV0831  NGVD 29              74.08   (m)          243.0    (f) LEVELING    3  
 HV0831  NGVD 29 (11/26/84)   74.082  (m)          243.05   (f) ADJUSTED    1 2
 HV0831
 HV0831.Superseded values are not recommended for survey control.
 HV0831
 HV0831.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0831.See file dsdata.pdf to determine how the superseded data were derived.
 HV0831
 HV0831_MARKER: DS = TRIANGULATION STATION DISK
 HV0831_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0831_STAMPING: GWYNN 1970
 HV0831_MARK LOGO: CGS
 HV0831_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0831+STABILITY: SURFACE MOTION
 HV0831
 HV0831  HISTORY     - Date     Condition        Report By
 HV0831  HISTORY     - 1970     MONUMENTED       NGS
 HV0831  HISTORY     - 1971     GOOD             NGS
 HV0831  HISTORY     - 1972     GOOD             NGS
 HV0831  HISTORY     - 20040726 MARK NOT FOUND   GEOCAC
 HV0831
 HV0831                          STATION DESCRIPTION
 HV0831
 HV0831'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV0831'THE STATION IS ABOUT 5-1/2 MILES NORTH-NORTHEAST OF WALDORF, 4-1/2
 HV0831'MILES SOUTH-SOUTHEAST OF CLINTON, 1-1/4 MILES WEST-NORTHWEST OF
 HV0831'BRANDYWINE, IN T.B. AND ON THE GROUNDS OF THE GWYNN HIGH SCHOOL.
 HV0831'PERMISSION WAS GRANTED BY THE BOARD OF EDUCATION OF PRINCE GEORGES
 HV0831'COUNTY, POST OFFICE DRAWER 120, UPPER MARLBORO, MARYLAND, 20870.
 HV0831'
 HV0831'TO REACH THE STATION FROM THE POST OFFICE IN BRANDYWINE, GO WESTERLY
 HV0831'ON STATE HIGHWAY 381 FOR 1.0 MILE TO U.S. HIGHWAY 301.  (TO REACH
 HV0831'THE AZIMUTH MARK FROM THIS POINT, TURN RIGHT AND GO NORTH ON U.S.
 HV0831'HIGHWAY 301 FOR 0.3 MILE TO THE AZIMUTH MARK ON THE LEFT IN A ROW OF
 HV0831'CEDAR TREES ON THE WEST SIDE OF THE HIGHWAY.) CONTINUE WESTERLY
 HV0831'ON STATE HIGHWAY 381 FOR 0.3 MILE TO A SIDE ROAD LEFT, DYSON ROAD.
 HV0831'TURN LEFT AND GO EAST-NORTHEAST ON DYSON ROAD FOR 0.15 MILE TO THE
 HV0831'STATION ON THE RIGHT.
 HV0831'
 HV0831'THE STATION MARK IS A STANDARD DISK, STAMPED GWYNN 1970, SET IN THE
 HV0831'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS FLUSH
 HV0831'WITH THE GROUND SURFACE.  IT IS 65.2 FEET WEST-NORTHWEST OF THE
 HV0831'CENTER OF A DOOR OF THE SCHOOL BUILDING, 63.5 FEET SOUTHWEST OF THE
 HV0831'SOUTHWEST EDGE OF A BRICK INCINERATOR, 54.1 FEET SOUTHEAST OF THE
 HV0831'CENTERLINE OF DYSON ROAD AND 25.4 FEET SOUTH OF THE CENTER OF A
 HV0831'MANHOLE COVER.  THE UNDERGROUND MARK IS 44 INCHES BELOW THE
 HV0831'GROUND SURFACE.
 HV0831'
 HV0831'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED GWYNN NO 1 1970, SET IN
 HV0831'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV0831'FLUSH WITH THE GROUND SURFACE.  IT IS 59.9 FEET NORTH-NORTHEAST OF
 HV0831'THE NORTHEAST EDGE OF THE INCINERATOR, 24.9 FEET SOUTH EAST OF
 HV0831'THE CENTERLINE OF DYSON ROAD, 18.2 FEET NORTH OF THE
 HV0831'CENTER OF A MANHOLE COVER, AND ABOUT 4 FEET LOWER IN
 HV0831'ELEVATION THAN THE STATION.
 HV0831'
 HV0831'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED GWYNN NO 2 1970, SET IN
 HV0831'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV0831'FLUSH WITH THE GROUND SURFACE.  IT IS 87.0 WEST OF A POWER LINE POLE
 HV0831'NUMBERED 4, 74.6 FEET NORTHWEST OF THE SCHOOL BUILDING, 15.0
 HV0831'FEET SOUTHEAST OF THE CENTERLINE OF DYSON ROAD AND ABOUT 2 FEET
 HV0831'LOWER IN ELEVATION THAN THE STATION.
 HV0831'
 HV0831'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED GWYNN 1970, SET IN THE
 HV0831'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS 4
 HV0831'INCHES ABOVE THE GROUND SURFACE.  IT IS 210.0 FEET NORTHWEST OF THE
 HV0831'CENTERLINE OF THE SOUTHBOUND LANE OF U.S. HIGHWAY 301, 8.5 FEET
 HV0831'NORTHEAST OF THE CENTERLINE OF A TRACK ROAD AND 1.5 FEET
 HV0831'NORTHWEST OF A WITNESS POST.
 HV0831'
 HV0831'THE DISTANCE BETWEEN REFERENCE MARKS COULD NOT BE MEASURED DUE TO
 HV0831'OBSTRUCTIONS.
 HV0831
 HV0831                          STATION RECOVERY (1971)
 HV0831
 HV0831'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0831'0.4 MI NW FROM TB.
 HV0831'ABOUT 0.4 MILE NORTHWEST ALONG STATE HIGHWAY 381 FROM THE INTERSECTION
 HV0831'OF U.S. HIGHWAY 301 AT TB, AT THE GWYNN PARK SCHOOL, NEAR THE
 HV0831'WEST SIDE OF THE BUILDING, 82 FEET WEST OF THE NORTH CORNER OF THE
 HV0831'BUILDING, 65 1/2 FEET NORTHWEST OF THE NORTHWEST ENTRANCE TO THE
 HV0831'BUILDING, 57 FEET SOUTHEAST OF THE CENTER LINE OF DYSON ROAD,
 HV0831'25 FEET SOUTH OF THE CENTER OF A MANHOLE COVER, ABOUT LEVEL WITH
 HV0831'THE GROUND AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE
 HV0831'LEVEL OF THE GROUND.
 HV0831
 HV0831                          STATION RECOVERY (1972)
 HV0831
 HV0831'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (RRG)
 HV0831'THE STATION AND RM 1 AND 2 WERE RECOVERED AND IN GOOD CONDITION.  THE
 HV0831'STATION MAY BE REACHED BY GOING 0.4 MILE NORTHWEST ALONG STATE
 HV0831'HIGHWAY 381 FROM THE INTERSECTION OF U. S. HIGHWAY 301 AT TB, AT THE
 HV0831'GWYNN PARK SCHOOL, NEAR THE WEST SIDE OF THE BUILDING, 82 FEET
 HV0831'WEST OF THE NORTH CORNER OF THE BUILDING, 65-1/2 FEET NORTHWEST OF
 HV0831'THE NORTHWEST ENTRANCE TO THE BUILDING, 57 FEET SOUTHEAST OF THE
 HV0831'CENTER LINE OF DYSON ROAD, 25 FEET SOUTH OF THE CENTER OF A
 HV0831'MANHOLE COVER, LEVEL WITH THE GROUND AND SET IN THE TOP OF A CONCRETE
 HV0831'POST FLUSH WITH THE GROUND.
 HV0831'
 HV0831'RM 1 IS 128 FEET NORTHEAST OF THE STATION MARK DESCRIBED, 132 FEET
 HV0831'NORTH OF THE NORTHWEST ENTRANCE TO THE SCHOOL, 26 FEET SOUTHEAST OF
 HV0831'THE CENTER LINE OF DYSON ROAD, 7 FEET SOUTHEAST OF A 12 INCH CEDAR
 HV0831'TREE, SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH ABOVE
 HV0831'THE LEVEL OF THE GROUND.
 HV0831'
 HV0831'RM 2 IS 143.5 FEET SOUTHWEST OF THE STATION MARK DESCRIBED, 74/7
 HV0831'FEET NORTHWEST OF THE NORTHWEST FACE OF THE SCHOOL BUILDING, 15-1/2
 HV0831'FEET SOUTHEAST OF THE CENTER LINE OF DYSON ROAD, SET IN THE TOP OF
 HV0831'A CONCRETE POST PROJECTING 4 INCHES ABOVE THE LEVEL OF THE GROUND.
 HV0831'
 HV0831'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--0.4 MILE
 HV0831'NORTHWEST.
 HV0831
 HV0831                          STATION RECOVERY (2004)
 HV0831
 HV0831'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV0831'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0832 ***********************************************************************
 HV0832  DESIGNATION -  GWYNN RM 1
 HV0832  PID         -  HV0832
 HV0832  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0832  COUNTRY     -  US
 HV0832  USGS QUAD   -  BRANDYWINE (2016)
 HV0832
 HV0832                         *CURRENT SURVEY CONTROL
 HV0832  ______________________________________________________________________
 HV0832* NAD 83(1986) POSITION- 38 42 11.23   (N) 076 52 16.65   (W)   HD_HELD1
 HV0832* NAVD 88 ORTHO HEIGHT -    72.445 (meters)      237.68  (feet) ADJUSTED
 HV0832  ______________________________________________________________________
 HV0832  GEOID HEIGHT    -        -32.812 (meters)                     GEOID18
 HV0832  DYNAMIC HEIGHT  -         72.404 (meters)      237.55  (feet) COMP
 HV0832  MODELED GRAVITY -    980,053.1   (mgal)                       NAVD 88
 HV0832
 HV0832  VERT ORDER      -  FIRST     CLASS II
 HV0832
 HV0832.The horizontal coordinates were determined by differentially corrected
 HV0832.hand held GPS observations or other comparable positioning techniques
 HV0832.and have an estimated accuracy of +/- 3 meters.
 HV0832
 HV0832.The orthometric height was determined by differential leveling and
 HV0832.adjusted by the NATIONAL GEODETIC SURVEY
 HV0832.in June 1991.
 HV0832
 HV0832.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0832.GEOID18 height accuracy estimate available here.
 HV0832
 HV0832.Click photographs - Photos may exist for this station.
 HV0832
 HV0832.The dynamic height is computed by dividing the NAVD 88
 HV0832.geopotential number by the normal gravity value computed on the
 HV0832.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0832.degrees latitude (g = 980.6199 gals.).
 HV0832
 HV0832.The modeled gravity was interpolated from observed gravity values.
 HV0832
 HV0832;                    North         East    Units  Estimated Accuracy
 HV0832;SPC MD       -   115,058.2     411,195.5     MT  (+/- 3 meters HH1 GPS) 
 HV0832
 HV0832_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3728085494(NAD 83)
 HV0832
 HV0832                          SUPERSEDED SURVEY CONTROL
 HV0832
 HV0832  NGVD 29 (11/26/84)   72.673  (m)          238.43   (f) ADJUSTED    1 2
 HV0832
 HV0832.Superseded values are not recommended for survey control.
 HV0832
 HV0832.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0832.See file dsdata.pdf to determine how the superseded data were derived.
 HV0832
 HV0832_MARKER: DR = REFERENCE MARK DISK
 HV0832_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0832_STAMPING: GWYNN NO 1 1970
 HV0832_MARK LOGO: CGS
 HV0832_PROJECTION: PROJECTING 3 CENTIMETERS
 HV0832_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0832+STABILITY: SURFACE MOTION
 HV0832
 HV0832  HISTORY     - Date     Condition        Report By
 HV0832  HISTORY     - 1970     MONUMENTED       NGS
 HV0832  HISTORY     - 1971     GOOD             NGS
 HV0832  HISTORY     - 20040726 MARK NOT FOUND   GEOCAC
 HV0832
 HV0832                          STATION DESCRIPTION
 HV0832
 HV0832'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0832'0.4 MI NW FROM TB.
 HV0832'ABOUT 0.4 MILE NORTHWEST ALONG STATE HIGHWAY 381 FROM THE
 HV0832'INTERSECTION OF U.S. HIGHWAY 301 AT TB, 128.0 FEET NORTHEAST
 HV0832'OF THE STATION MARK DESCRIBED, 132 FEET NORTH OF THE NORTHWEST
 HV0832'ENTRANCE TO THE GWYNN PARK SCHOOL, 26 FEET SOUTHEAST OF THE
 HV0832'CENTER LINE OF DYSON ROAD, 7 FEET SOUTHEAST OF A 12 INCH CEDAR
 HV0832'TREE, SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH ABOVE
 HV0832'THE LEVEL OF THE GROUND.
 HV0832
 HV0832                          STATION RECOVERY (2004)
 HV0832
 HV0832'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV0832'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0830 ***********************************************************************
 HV0830  DESIGNATION -  GWYNN RM 2
 HV0830  PID         -  HV0830
 HV0830  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0830  COUNTRY     -  US
 HV0830  USGS QUAD   -  BRANDYWINE (2016)
 HV0830
 HV0830                         *CURRENT SURVEY CONTROL
 HV0830  ______________________________________________________________________
 HV0830* NAD 83(1986) POSITION- 38 42 09.44   (N) 076 52 19.05   (W)   HD_HELD1
 HV0830* NAVD 88 ORTHO HEIGHT -    73.579 (meters)      241.40  (feet) ADJUSTED
 HV0830  ______________________________________________________________________
 HV0830  GEOID HEIGHT    -        -32.812 (meters)                     GEOID18
 HV0830  DYNAMIC HEIGHT  -         73.537 (meters)      241.26  (feet) COMP
 HV0830  MODELED GRAVITY -    980,053.1   (mgal)                       NAVD 88
 HV0830
 HV0830  VERT ORDER      -  FIRST     CLASS II
 HV0830
 HV0830.The horizontal coordinates were determined by differentially corrected
 HV0830.hand held GPS observations or other comparable positioning techniques
 HV0830.and have an estimated accuracy of +/- 3 meters.
 HV0830
 HV0830.The orthometric height was determined by differential leveling and
 HV0830.adjusted by the NATIONAL GEODETIC SURVEY
 HV0830.in June 1991.
 HV0830
 HV0830.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0830.GEOID18 height accuracy estimate available here.
 HV0830
 HV0830.Click photographs - Photos may exist for this station.
 HV0830
 HV0830.The dynamic height is computed by dividing the NAVD 88
 HV0830.geopotential number by the normal gravity value computed on the
 HV0830.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0830.degrees latitude (g = 980.6199 gals.).
 HV0830
 HV0830.The modeled gravity was interpolated from observed gravity values.
 HV0830
 HV0830;                    North         East    Units  Estimated Accuracy
 HV0830;SPC MD       -   115,002.9     411,137.6     MT  (+/- 3 meters HH1 GPS) 
 HV0830
 HV0830_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3722185440(NAD 83)
 HV0830
 HV0830                          SUPERSEDED SURVEY CONTROL
 HV0830
 HV0830  NGVD 29 (11/26/84)   73.806  (m)          242.15   (f) ADJUSTED    1 2
 HV0830
 HV0830.Superseded values are not recommended for survey control.
 HV0830
 HV0830.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0830.See file dsdata.pdf to determine how the superseded data were derived.
 HV0830
 HV0830_MARKER: DR = REFERENCE MARK DISK
 HV0830_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0830_STAMPING: GWYNN NO 2 1970
 HV0830_MARK LOGO: CGS
 HV0830_PROJECTION: PROJECTING 10 CENTIMETERS
 HV0830_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0830+STABILITY: SURFACE MOTION
 HV0830
 HV0830  HISTORY     - Date     Condition        Report By
 HV0830  HISTORY     - 1970     MONUMENTED       NGS
 HV0830  HISTORY     - 1971     GOOD             NGS
 HV0830  HISTORY     - 20040726 MARK NOT FOUND   GEOCAC
 HV0830
 HV0830                          STATION DESCRIPTION
 HV0830
 HV0830'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0830'0.4 MI NW FROM TB.
 HV0830'ABOUT 0.4 MILE NORTHWEST ALONG STATE HIGHWAY 381 FROM THE INTERSECTION
 HV0830'OF U.S. HIGHWAY 301 AT TB, 143.5 FEET SOUTHWEST OF THE STATION MARK
 HV0830'DESCRIBED, 74.7 FEET NORTHWEST OF THE NORTHWEST FACE OF THE GWYNN
 HV0830'PARK SCHOOL BUILDING, 15 1/2 FEET SOUTHEAST OF THE CENTER LINE
 HV0830'OF DYSON ROAD, SET IN THE TOP OF A CONCRETE POST PROJECTING 4
 HV0830'INCHES ABOVE THE LEVEL OF THE GROUND.
 HV0830
 HV0830                          STATION RECOVERY (2004)
 HV0830
 HV0830'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV0830'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4746 ***********************************************************************
 AB4746  DESIGNATION -  GYPSY
 AB4746  PID         -  AB4746
 AB4746  STATE/COUNTY-  MD/CARROLL
 AB4746  COUNTRY     -  US
 AB4746  USGS QUAD   -  WINFIELD (2016)
 AB4746
 AB4746                         *CURRENT SURVEY CONTROL
 AB4746  ______________________________________________________________________
 AB4746* NAD 83(2011) POSITION- 39 29 10.49831(N) 077 03 32.40673(W)   ADJUSTED
 AB4746* NAD 83(2011) ELLIP HT-   223.048 (meters)        (06/27/12)   ADJUSTED
 AB4746* NAD 83(2011) EPOCH   -  2010.00
 AB4746* NAVD 88 ORTHO HEIGHT -   255.1   (meters)      837.    (feet) GPS OBS
 AB4746  ______________________________________________________________________
 AB4746  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4746  GEOID HEIGHT    -        -32.097 (meters)                     GEOID99
 AB4746  GEOID HEIGHT    -        -32.086 (meters)                     GEOID18
 AB4746  NAD 83(2011) X  -  1,103,915.630 (meters)                     COMP
 AB4746  NAD 83(2011) Y  - -4,804,149.400 (meters)                     COMP
 AB4746  NAD 83(2011) Z  -  4,034,267.241 (meters)                     COMP
 AB4746  LAPLACE CORR    -          2.24  (seconds)                    DEFLEC18
 AB4746
 AB4746  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4746  Standards:
 AB4746         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4746            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4746  -------------------------------------------------------------------
 AB4746  NETWORK    2.03   5.96           0.89   0.75   3.04     -0.17815106
 AB4746  -------------------------------------------------------------------
 AB4746  Click here for local accuracies and other accuracy information.
 AB4746
 AB4746.The horizontal coordinates were established by GPS observations
 AB4746.and adjusted by the National Geodetic Survey in June 2012.
 AB4746
 AB4746.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4746.been affixed to the stable North American tectonic plate. See 
 AB4746.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4746
 AB4746.The horizontal coordinates are valid at the epoch date displayed above
 AB4746.which is a decimal equivalence of Year/Month/Day.
 AB4746
 AB4746.The orthometric height was determined by GPS observations and a
 AB4746.high-resolution geoid model.
 AB4746
 AB4746.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4746.GEOID18 height accuracy estimate available here.
 AB4746
 AB4746.Click photographs - Photos may exist for this station.
 AB4746
 AB4746.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4746
 AB4746.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4746
 AB4746.The ellipsoidal height was determined by GPS observations
 AB4746.and is referenced to NAD 83.
 AB4746
 AB4746. The following values were computed from the NAD 83(2011) position.
 AB4746
 AB4746;                    North         East     Units Scale Factor Converg.
 AB4746;SPC MD       -   201,989.894   394,924.015   MT  1.00000654   -0 02 13.3
 AB4746;SPC MD       -   662,695.18  1,295,679.87   sFT  1.00000654   -0 02 13.3
 AB4746;UTM  18      - 4,372,762.165   322,926.798   MT  0.99998606   -1 18 34.7
 AB4746
 AB4746!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4746!SPC MD       -   0.99996501  x   1.00000654  =   0.99997155
 AB4746!UTM  18      -   0.99996501  x   0.99998606  =   0.99995107
 AB4746
 AB4746_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2292672762(NAD 83)
 AB4746
 AB4746                          SUPERSEDED SURVEY CONTROL
 AB4746
 AB4746  NAD 83(2007)-  39 29 10.49858(N)    077 03 32.40756(W) AD(2002.00) 0
 AB4746  ELLIP H (02/10/07)  223.071  (m)                       GP(2002.00)    
 AB4746  ELLIP H (08/30/02)  223.057  (m)                       GP(       ) 4 2
 AB4746  NAD 83(1991)-  39 29 10.49833(N)    077 03 32.40796(W) AD(       ) 1
 AB4746  ELLIP H (07/03/96)  222.978  (m)                       GP(       ) 1 1
 AB4746  NAVD 88 (07/03/96)  255.1    (m)  GEOID93  model used  GPS OBS        
 AB4746
 AB4746.Superseded values are not recommended for survey control.
 AB4746
 AB4746.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4746.See file dsdata.pdf to determine how the superseded data were derived.
 AB4746
 AB4746_MARKER: DD = SURVEY DISK
 AB4746_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4746_STAMPING: GYPSY 1984
 AB4746_MARK LOGO: MD-013
 AB4746_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4746_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4746+STABILITY: SURFACE MOTION
 AB4746_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4746+SATELLITE: SATELLITE OBSERVATIONS - 1984
 AB4746
 AB4746  HISTORY     - Date     Condition        Report By
 AB4746  HISTORY     - 1984     MONUMENTED       MD-013
 AB4746
 AB4746                          STATION DESCRIPTION
 AB4746
 AB4746'DESCRIBED BY CARROLL COUNTY MARYLAND 1984
 AB4746'STATION IS LOCATED ABOUT 7 MI (11.3 KM) SOUTH OF WESTMINSTER AND ABOUT
 AB4746'4.5 MI (7.2 KM) SOUTHEAST OF NEW WINDSOR. TO REACH STATION FROM THE
 AB4746'INTERSECTION OF MD ROUTE 27 (RIDGE ROAD) AND MD ROUTE 26 (LIBERTY
 AB4746'ROAD) GO NORTH ON MD ROUTE 27 FOR 2.5 MI (4.0 KM) TO THE STATION ON
 AB4746'THE RIGHT. STATION IS ALSO 0.5 MI (0.8 KM) NORTH OF THE INTERSECTION
 AB4746'OF MD ROUTE 27 AND MD ROUTE 407 (MARSTON ROAD). STATION IS ACROSS THE
 AB4746'STREET FROM A 1.5 STORY BRICK HOUSE. STATION MARK IS SET IN THE TOP OF
 AB4746'A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AB4746'29.0 FT (8.8 M) WEST OF THE CENTERLINE OF THE ROAD, 73.3 FT (22.3 M)
 AB4746'SOUTH OF POWER POLE NO.99288 AND 16.0 FT (4.9 M) NORTH OF THE
 AB4746'CENTERLINE OF A LEADING SOUTHWEST TO HOUSE NO.3230.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6702 ***********************************************************************
 HV6702  DESIGNATION -  GYRO 1944
 HV6702  PID         -  HV6702
 HV6702  STATE/COUNTY-  MD/CALVERT
 HV6702  COUNTRY     -  US
 HV6702  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6702
 HV6702                         *CURRENT SURVEY CONTROL
 HV6702  ______________________________________________________________________
 HV6702* NAD 83(1991) POSITION- 38 19 59.78528(N) 076 27 25.87345(W)   ADJUSTED
 HV6702* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6702  ______________________________________________________________________
 HV6702  GEOID HEIGHT    -        -34.374 (meters)                     GEOID18
 HV6702  LAPLACE CORR    -         -4.97  (seconds)                    DEFLEC18
 HV6702  HORZ ORDER      -  THIRD
 HV6702
 HV6702.The horizontal coordinates were established by classical geodetic methods
 HV6702.and adjusted by the National Geodetic Survey in January 1992.
 HV6702
 HV6702.The orthometric height was scaled from a topographic map.
 HV6702
 HV6702.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6702.GEOID18 height accuracy estimate available here.
 HV6702
 HV6702.Click photographs - Photos may exist for this station.
 HV6702
 HV6702.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6702
 HV6702. The following values were computed from the NAD 83(1991) position.
 HV6702
 HV6702;                    North         East     Units Scale Factor Converg.
 HV6702;SPC MD       -    74,137.407   447,459.477   MT  0.99999438   +0 20 26.5
 HV6702;SPC MD       -   243,232.48  1,468,039.97   sFT  0.99999438   +0 20 26.5
 HV6702;UTM  18      - 4,243,798.099   372,640.827   MT  0.99979976   -0 54 14.1
 HV6702
 HV6702!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6702!SPC MD       -   1.00000512  x   0.99999438  =   0.99999950
 HV6702!UTM  18      -   1.00000512  x   0.99979976  =   0.99980488
 HV6702
 HV6702:                Primary Azimuth Mark                     Grid Az
 HV6702:SPC MD       -  PRESTON WOOLBURN HOUSE CUPOLA            222 21 24.2
 HV6702:UTM  18      -  PRESTON WOOLBURN HOUSE CUPOLA            223 36 04.8
 HV6702
 HV6702_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7264043798(NAD 83)
 HV6702
 HV6702|---------------------------------------------------------------------|
 HV6702| PID    Reference Object                     Distance      Geod. Az  |
 HV6702|                                                           dddmmss.s |
 HV6702| HV6667 USN AIR STA TALL ELEV TK            APPROX. 6.9 KM 1750125.4 |
 HV6702| HV6711 SOLOMONS ISLAND ME CHURCH           APPROX. 1.1 KM 1924326.2 |
 HV6702| HV6690 SOLOMONS OUR LADY STAR CATH CH      APPROX. 1.0 KM 1982425.2 |
 HV6702| HV6696 PRESTON WOOLBURN HOUSE CUPOLA       APPROX. 0.8 KM 2224150.7 |
 HV6702| HV6694 SOLOMONS ELEMENTARY SCH S VENT      APPROX. 0.7 KM 2521642.2 |
 HV6702|---------------------------------------------------------------------|
 HV6702
 HV6702                          SUPERSEDED SURVEY CONTROL
 HV6702
 HV6702  NAD 83(1986)-  38 19 59.78451(N)    076 27 25.89013(W) AD(       ) 3
 HV6702  NAD 27      -  38 19 59.33200(N)    076 27 27.05000(W) AD(       ) 3
 HV6702
 HV6702.Superseded values are not recommended for survey control.
 HV6702
 HV6702.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6702.See file dsdata.pdf to determine how the superseded data were derived.
 HV6702
 HV6702_MARKER: DW = HYDROGRAPHIC STATION DISK
 HV6702_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6702_STAMPING: GYRO 1944
 HV6702_MARK LOGO: CGS
 HV6702_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV6702_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6702+STABILITY: SURFACE MOTION
 HV6702
 HV6702  HISTORY     - Date     Condition        Report By
 HV6702  HISTORY     - 1944     MONUMENTED       CGS
 HV6702  HISTORY     - 1960     GOOD             CGS
 HV6702  HISTORY     - 1976     GOOD             MDDNR
 HV6702  HISTORY     - 1987     GOOD             NOS
 HV6702  HISTORY     - 1989     GOOD             USPSQD
 HV6702
 HV6702                          STATION DESCRIPTION
 HV6702
 HV6702'DESCRIBED BY COAST AND GEODETIC SURVEY 1944 (TBR)
 HV6702'STATION IS ON THE NAVAL AMPHIBIOUS TRAINING BASE ON THE NE BANK OF
 HV6702'BACK CREEK, ABOUT 1 MILE N OF THE TOWN OF SOLOMONS, S OF THE
 HV6702'MACHINE SHOP FOR THE BASE WHICH IS THE E OF TWO LONG BUILDINGS,
 HV6702'27.48 METERS SE OF THE SW CORNER, AND 28.69 METERS SW OF THE SE
 HV6702'CORNER OF THE MACHINE SHOP.  THIS BUILDING IS ALSO USED FOR GYRO
 HV6702'TESTING.
 HV6702'
 HV6702'STATION MARK IS A BRONZE HYDROGRAPHIC-STATION DISK SET IN THE
 HV6702'TOP OF A CONCRETE POST.  IT IS FLUSH WITH THE GROUND AND PROTECTED
 HV6702'BY A PIPE FRAMEWORK.
 HV6702
 HV6702                          STATION RECOVERY (1960)
 HV6702
 HV6702'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6702'STATION RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION
 HV6702'FOLLOWS--STATION IS LOCATED ON THE NE BANK OF BACK CREEK, ABOUT
 HV6702'1 MILE N OF THE TOWN OF SOLOMONS ON PROPERTY OF CALVERT MARINA
 HV6702'AND YACHT CLUB.  ON THE SOUTH SIDE OF THE MOST EASTERLY OF TWO
 HV6702'LARGE BUILDINGS USED FOR BOAT STORAGE, 90.1 FT. SE OF THE SW
 HV6702'CORNER, 94.0 FT. SW OF THE SE CORNER AND 2 FT. NW OF A SMALL
 HV6702'ASH TREE.
 HV6702'
 HV6702'STATION IS MARKED BY A HYDROGRAPHIC-STATION DISK STAMPED GYRO 1944
 HV6702'SET IN TOP OF A CONCRETE POST PROJECTING 6 INCHES.
 HV6702
 HV6702                          STATION RECOVERY (1976)
 HV6702
 HV6702'RECOVERY NOTE BY MD DEPT OF NAT RES 1976 (GEH)
 HV6702'GYRO 1944 GOOD
 HV6702'
 HV6702'RECOVERED AS DESCRIBED WITH ADD STA. IS ON SMALL RISE IN THE
 HV6702'GROUND ABOUT 2 FEET SOUTHWESTERLY OF A 3 TRUNKED LOCUST TREE
 HV6702
 HV6702                          STATION RECOVERY (1987)
 HV6702
 HV6702'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1987 (MWJ)
 HV6702'THE STATION WAS RECOVERED AT THIS DATE.
 HV6702'RMS NOT RECOVERED AT THIS TIME
 HV6702
 HV6702                          STATION RECOVERY (1989)
 HV6702
 HV6702'RECOVERY NOTE BY US POWER SQUADRON 1989 (WSB)
 HV6702'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3566 ***********************************************************************
 JU3566  DESIGNATION -  H
 JU3566  PID         -  JU3566
 JU3566  STATE/COUNTY-  MD/CECIL
 JU3566  COUNTRY     -  US
 JU3566  USGS QUAD   -  EARLEVILLE (2016)
 JU3566
 JU3566                         *CURRENT SURVEY CONTROL
 JU3566  ______________________________________________________________________
 JU3566* NAD 83(1991) POSITION- 39 28 51.67603(N) 075 57 45.66757(W)   ADJUSTED
 JU3566* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JU3566  ______________________________________________________________________
 JU3566  GEOID HEIGHT    -        -33.334 (meters)                     GEOID18
 JU3566  LAPLACE CORR    -         -0.98  (seconds)                    DEFLEC18
 JU3566  HORZ ORDER      -  THIRD
 JU3566
 JU3566.The horizontal coordinates were established by classical geodetic methods
 JU3566.and adjusted by the National Geodetic Survey in January 1992.
 JU3566
 JU3566.The orthometric height was scaled from a topographic map.
 JU3566
 JU3566.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3566.GEOID18 height accuracy estimate available here.
 JU3566
 JU3566.Click photographs - Photos may exist for this station.
 JU3566
 JU3566.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3566
 JU3566. The following values were computed from the NAD 83(1991) position.
 JU3566
 JU3566;                    North         East     Units Scale Factor Converg.
 JU3566;SPC MD       -   201,914.825   489,245.810   MT  1.00000557   +0 39 03.8
 JU3566;SPC MD       -   662,448.89  1,605,133.96   sFT  1.00000557   +0 39 03.8
 JU3566;UTM  18      - 4,370,600.495   417,205.995   MT  0.99968440   -0 36 43.7
 JU3566
 JU3566!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3566!SPC MD       -   1.00000480  x   1.00000557  =   1.00001037
 JU3566!UTM  18      -   1.00000480  x   0.99968440  =   0.99968919
 JU3566
 JU3566:                Primary Azimuth Mark                     Grid Az
 JU3566:SPC MD       -  G                                        046 36 19.9
 JU3566:UTM  18      -  G                                        047 52 07.4
 JU3566
 JU3566_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1720570600(NAD 83)
 JU3566
 JU3566|---------------------------------------------------------------------|
 JU3566| PID    Reference Object                     Distance      Geod. Az  |
 JU3566|                                                           dddmmss.s |
 JU3566| CB2040 H RM 2                                4.877 METERS 00854     |
 JU3566| JU3600 G                                   APPROX. 1.6 KM 0471523.7 |
 JU3566| CB2039 H RM 1                                5.486 METERS 30040     |
 JU3566|---------------------------------------------------------------------|
 JU3566
 JU3566                          SUPERSEDED SURVEY CONTROL
 JU3566
 JU3566  NAD 83(1986)-  39 28 51.66835(N)    075 57 45.67411(W) AD(       ) 3
 JU3566  NAD 27      -  39 28 51.27100(N)    075 57 46.88400(W) AD(       ) 3
 JU3566
 JU3566.Superseded values are not recommended for survey control.
 JU3566
 JU3566.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3566.See file dsdata.pdf to determine how the superseded data were derived.
 JU3566
 JU3566_MARKER: DD = SURVEY DISK
 JU3566_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3566_STAMPING: H
 JU3566_MARK LOGO: USACE
 JU3566_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3566+STABILITY: SURFACE MOTION
 JU3566
 JU3566  HISTORY     - Date     Condition        Report By
 JU3566  HISTORY     - 1937     MONUMENTED       USACE
 JU3566
 JU3566                          STATION DESCRIPTION
 JU3566
 JU3566'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3566'LOCATED ON THE N SIDE OF ELK RIVER ON TIMBER NECK ON THE
 JU3566'EXTREME POINT AND IS 3.7 METERS INSHORE.  IT IS MARKED BY A
 JU3566'STANDARD U.S.E.D. DISK (STAMPED H) SET ATOP A 6-INCH SQUARE
 JU3566'CONCRETE POST AND PROJECTS 8 INCHES ABOVE GROUND.
 JU3566'
 JU3566'THE REFERENCE MARKS ARE WOODEN STAKES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0245 ***********************************************************************
 HU0245  DESIGNATION -  H 10
 HU0245  PID         -  HU0245
 HU0245  STATE/COUNTY-  MD/WORCESTER
 HU0245  COUNTRY     -  US
 HU0245  USGS QUAD   -  BERLIN (2016)
 HU0245
 HU0245                         *CURRENT SURVEY CONTROL
 HU0245  ______________________________________________________________________
 HU0245* NAD 83(1991) POSITION- 38 20 49.60208(N) 075 12 56.01041(W)   ADJUSTED
 HU0245* NAVD 88 ORTHO HEIGHT -    10.171 (meters)       33.37  (feet) ADJUSTED
 HU0245  ______________________________________________________________________
 HU0245  GEOID HEIGHT    -        -36.000 (meters)                     GEOID18
 HU0245  LAPLACE CORR    -         -0.54  (seconds)                    DEFLEC18
 HU0245  DYNAMIC HEIGHT  -         10.165 (meters)       33.35  (feet) COMP
 HU0245  MODELED GRAVITY -    980,007.7   (mgal)                       NAVD 88
 HU0245
 HU0245  HORZ ORDER      -  SECOND
 HU0245  VERT ORDER      -  SECOND    CLASS 0
 HU0245
 HU0245.The horizontal coordinates were established by classical geodetic methods
 HU0245.and adjusted by the National Geodetic Survey in January 1992.
 HU0245
 HU0245.The orthometric height was determined by differential leveling and
 HU0245.adjusted by the NATIONAL GEODETIC SURVEY
 HU0245.in June 1991.
 HU0245
 HU0245.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0245.GEOID18 height accuracy estimate available here.
 HU0245
 HU0245.Click photographs - Photos may exist for this station.
 HU0245
 HU0245.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0245
 HU0245.The dynamic height is computed by dividing the NAVD 88
 HU0245.geopotential number by the normal gravity value computed on the
 HU0245.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0245.degrees latitude (g = 980.6199 gals.).
 HU0245
 HU0245.The modeled gravity was interpolated from observed gravity values.
 HU0245
 HU0245. The following values were computed from the NAD 83(1991) position.
 HU0245
 HU0245;                    North         East     Units Scale Factor Converg.
 HU0245;SPC MD       -    77,056.886   555,979.097   MT  0.99999214   +1 07 11.9
 HU0245;SPC MD       -   252,810.80  1,824,074.75   sFT  0.99999214   +1 07 11.9
 HU0245;UTM  18      - 4,244,350.907   481,164.087   MT  0.99960437   -0 08 01.5
 HU0245
 HU0245!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0245!SPC MD       -   1.00000405  x   0.99999214  =   0.99999619
 HU0245!UTM  18      -   1.00000405  x   0.99960437  =   0.99960842
 HU0245
 HU0245_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8116444350(NAD 83)
 HU0245
 HU0245                          SUPERSEDED SURVEY CONTROL
 HU0245
 HU0245  NAD 83(1986)-  38 20 49.58701(N)    075 12 56.03817(W) AD(       ) 2
 HU0245  NAD 27      -  38 20 49.17300(N)    075 12 57.35700(W) AD(       ) 2
 HU0245  NGVD 29 (02/25/92)   10.414  (m)           34.17   (f) ADJUSTED    2 0
 HU0245  NGVD 29 (??/??/87)   10.414  (m)           34.17   (f) SUPERSEDED  2 0
 HU0245  NGVD 29              10.54   (m)           34.6    (f) LEVELING    3  
 HU0245
 HU0245.Superseded values are not recommended for survey control.
 HU0245
 HU0245.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0245.See file dsdata.pdf to determine how the superseded data were derived.
 HU0245
 HU0245_MARKER: DB = BENCH MARK DISK
 HU0245_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0245_STAMPING: H 10 1935
 HU0245_MARK LOGO: CGS
 HU0245_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0245_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0245+STABILITY: SURFACE MOTION
 HU0245_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0245+SATELLITE: SATELLITE OBSERVATIONS - July 16, 1991
 HU0245
 HU0245  HISTORY     - Date     Condition        Report By
 HU0245  HISTORY     - 1955     MONUMENTED       CGS
 HU0245  HISTORY     - 1962     GOOD             CGS
 HU0245  HISTORY     - 1967     GOOD             CGS
 HU0245  HISTORY     - 19910716 GOOD             MDSHA
 HU0245
 HU0245                          STATION DESCRIPTION
 HU0245
 HU0245'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 HU0245'U.S. COAST AND GEODETIC SURVEY BENCH MARK H10
 HU0245'IS 19 FEET EAST OF THE EAST RAIL OF THE RAILROAD
 HU0245'TRACK, AND 1 FOOT SOUTHWEST OF A WHITE 4 IN X 4 IN WITNESS
 HU0245'POST.  THE MARK IS A STANDARD DISK SET IN THE TOP OF A 4 IN X 4 IN
 HU0245'CONCRETE POST WHICH PROJECTS 2 INCHES, AND THE DISK IS STAMPED
 HU0245'H10 1935.
 HU0245'
 HU0245'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 50 AND
 HU0245'113 IN BERLIN, GO NORTH ON U.S. HIGHWAY 113 FOR 1 MILE TO THE SHORE
 HU0245'FARM SUPPLY BUILDING ON THE RIGHT AND THE STATION AS DESCRIBED
 HU0245'ABOVE.
 HU0245
 HU0245                          STATION RECOVERY (1962)
 HU0245
 HU0245'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962
 HU0245'1.3 MI N FROM BERLIN.
 HU0245'1.3 MILES NORTH ALONG THE PENNSYLVANIA RAILROAD FROM STATION AT
 HU0245'BERLIN, WORCESTER COUNTY, 0.1 MILE SOUTH OF THE INTERSECTION OF
 HU0245'HIGHWAY 113 AND THE RAILROAD, 35 FEET SOUTH OF AN OLD ABANDONED
 HU0245'ROADBED, 24 FEET EAST OF THE CENTERLINE OF THE RAILROAD TRACK, 1
 HU0245'FOOT WEST OF A WHITE WOODEN WITNESS POST AND ABOUT 2 FEET HIGHER
 HU0245'THAN THE TRACK.  A STANDARD DISK, STAMPED H 10 1935 AND SET IN THE
 HU0245'TOP OF A CONCRETE POST PROJECTING 1 INCH ABOVE GROUND.
 HU0245
 HU0245                          STATION RECOVERY (1967)
 HU0245
 HU0245'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 HU0245'RECOVERED IN GOOD CONDITION.
 HU0245
 HU0245                          STATION RECOVERY (1991)
 HU0245
 HU0245'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU0245'THE MARK IS LOCATED ABOUT 1.57 MI (2.53 KM) NORTH OF BERLIN ON
 HU0245'RAILROAD RIGHT-OF-WAY.  TO REACH FROM THE INTERSECTION OF U.S.
 HU0245'HIGHWAYS 50 AND 113, GO NORTH ON U.S. HIGHWAY 113 FOR 0.42 MI (0.68
 HU0245'KM) TO A INTERSECTION.  TURN LEFT AND GO WEST ON STATE ROUTE 818 FOR
 HU0245'0.03 MI (0.05 KM) TO A PAVED ROAD LEFT.  TURN LEFT AND GO SOUTH ON
 HU0245'THE PAVED ROAD FOR 0.10 MI (0.16 KM) TO THE MARK ON THE RIGHT.  IT IS
 HU0245'55.7 FT (17.0 M) NORTHWEST OF THE NORTHWEST CORNER OF A CONCRETE
 HU0245'BLOCK BUILDING, 27.2 FT (8.3 M) WEST OF THE CENTER LINE OF THE PAVED
 HU0245'ROAD, 21.3 FT (6.5 M) EAST OF THE EAST RAIL OF A RAILROAD, 16.9 FT
 HU0245'(5.2 M) SOUTHWEST OF A GUM TREE AND SET IN THE TOP OF A 0.5 FT (0.2
 HU0245'M) SQUARE CONCRETE POST RECESSED 1.0 FT (0.3 M) .
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1876 ***********************************************************************
 JU1876  DESIGNATION -  H 103
 JU1876  PID         -  JU1876
 JU1876  STATE/COUNTY-  MD/CECIL
 JU1876  COUNTRY     -  US
 JU1876  USGS QUAD   -  NORTH EAST (2016)
 JU1876
 JU1876                         *CURRENT SURVEY CONTROL
 JU1876  ______________________________________________________________________
 JU1876* NAD 83(1986) POSITION- 39 35 32.     (N) 075 58 16.     (W)   SCALED
 JU1876* NAVD 88 ORTHO HEIGHT -     3.778 (meters)       12.40  (feet) ADJUSTED
 JU1876  ______________________________________________________________________
 JU1876  GEOID HEIGHT    -        -33.171 (meters)                     GEOID18
 JU1876  DYNAMIC HEIGHT  -          3.776 (meters)       12.39  (feet) COMP
 JU1876  MODELED GRAVITY -    980,129.1   (mgal)                       NAVD 88
 JU1876
 JU1876  VERT ORDER      -  SECOND    CLASS 0
 JU1876
 JU1876.The horizontal coordinates were scaled from a map and have
 JU1876.an estimated accuracy of +/- 6 seconds.
 JU1876
 JU1876.The orthometric height was determined by differential leveling and
 JU1876.adjusted by the NATIONAL GEODETIC SURVEY
 JU1876.in June 1991.
 JU1876
 JU1876.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1876.GEOID18 height accuracy estimate available here.
 JU1876
 JU1876.Click photographs - Photos may exist for this station.
 JU1876
 JU1876.The dynamic height is computed by dividing the NAVD 88
 JU1876.geopotential number by the normal gravity value computed on the
 JU1876.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1876.degrees latitude (g = 980.6199 gals.).
 JU1876
 JU1876.The modeled gravity was interpolated from observed gravity values.
 JU1876
 JU1876;                    North         East    Units  Estimated Accuracy
 JU1876;SPC MD       -   214,250.      488,380.      MT  (+/- 180 meters Scaled)
 JU1876
 JU1876_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ166829(NAD 83)
 JU1876
 JU1876                          SUPERSEDED SURVEY CONTROL
 JU1876
 JU1876  NGVD 29 (11/26/84)    4.008  (m)           13.15   (f) ADJUSTED    2 0
 JU1876
 JU1876.Superseded values are not recommended for survey control.
 JU1876
 JU1876.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1876.See file dsdata.pdf to determine how the superseded data were derived.
 JU1876
 JU1876_MARKER: DB = BENCH MARK DISK
 JU1876_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JU1876_SP_SET: CULVERT
 JU1876_STAMPING: H 103 1961
 JU1876_MARK LOGO: CGS
 JU1876_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU1876_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1876+SATELLITE: SATELLITE OBSERVATIONS - March 25, 2004
 JU1876
 JU1876  HISTORY     - Date     Condition        Report By
 JU1876  HISTORY     - 1961     MONUMENTED       CGS
 JU1876  HISTORY     - 1964     GOOD             CGS
 JU1876  HISTORY     - 1982     GOOD             LOCSUR
 JU1876  HISTORY     - 19910216 GOOD             USPSQD
 JU1876  HISTORY     - 20040325 GOOD             USPSQD
 JU1876
 JU1876                          STATION DESCRIPTION
 JU1876
 JU1876'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1876'1.6 MI SW FROM NORTH EAST.
 JU1876'1.6 MILES SOUTHWEST ON STATE HIGHWAY 7 FROM ITS JUNCTION WITH
 JU1876'HIGHWAY 272 AT NORTH EAST.  SET IN A DRILL HOLE IN THE TOP OF THE
 JU1876'SOUTHEAST CONCRETE WINGWALL, WITH 4 GALVANIZED PIPES MAKING
 JU1876'THE DRAIN OF THE CULVERT UNDER THE HIGHWAY.  ABOUT 1 FOOT BELOW
 JU1876'LEVEL OF THE ROAD.
 JU1876
 JU1876                          STATION RECOVERY (1982)
 JU1876
 JU1876'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
 JU1876'RECOVERED IN GOOD CONDITION.
 JU1876
 JU1876                          STATION RECOVERY (1991)
 JU1876
 JU1876'RECOVERY NOTE BY US POWER SQUADRON 1991 (ECH)
 JU1876'RECOVERED IN GOOD CONDITION.
 JU1876
 JU1876                          STATION RECOVERY (2004)
 JU1876
 JU1876'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLG)
 JU1876'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0274 ***********************************************************************
 HU0274  DESIGNATION -  H 104
 HU0274  PID         -  HU0274
 HU0274  STATE/COUNTY-  MD/WORCESTER
 HU0274  COUNTRY     -  US
 HU0274  USGS QUAD   -  OCEAN CITY (2016)
 HU0274
 HU0274                         *CURRENT SURVEY CONTROL
 HU0274  ______________________________________________________________________
 HU0274* NAD 83(1986) POSITION- 38 18 37.     (N) 075 07 06.     (W)   SCALED
 HU0274* NAVD 88 ORTHO HEIGHT -     2.894 (meters)        9.49  (feet) ADJUSTED
 HU0274  ______________________________________________________________________
 HU0274  GEOID HEIGHT    -        -36.078 (meters)                     GEOID18
 HU0274  DYNAMIC HEIGHT  -          2.892 (meters)        9.49  (feet) COMP
 HU0274  MODELED GRAVITY -    980,005.3   (mgal)                       NAVD 88
 HU0274
 HU0274  VERT ORDER      -  SECOND    CLASS 0
 HU0274
 HU0274.The horizontal coordinates were scaled from a map and have
 HU0274.an estimated accuracy of +/- 6 seconds.
 HU0274
 HU0274.The orthometric height was determined by differential leveling and
 HU0274.adjusted by the NATIONAL GEODETIC SURVEY
 HU0274.in June 1991.
 HU0274
 HU0274.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0274.GEOID18 height accuracy estimate available here.
 HU0274
 HU0274.Click photographs - Photos may exist for this station.
 HU0274
 HU0274.The dynamic height is computed by dividing the NAVD 88
 HU0274.geopotential number by the normal gravity value computed on the
 HU0274.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0274.degrees latitude (g = 980.6199 gals.).
 HU0274
 HU0274.The modeled gravity was interpolated from observed gravity values.
 HU0274
 HU0274;                    North         East    Units  Estimated Accuracy
 HU0274;SPC MD       -    73,140.      564,560.      MT  (+/- 180 meters Scaled)
 HU0274
 HU0274_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH896402(NAD 83)
 HU0274
 HU0274                          SUPERSEDED SURVEY CONTROL
 HU0274
 HU0274  NGVD 29 (11/26/84)    3.137  (m)           10.29   (f) ADJUSTED    2 0
 HU0274
 HU0274.Superseded values are not recommended for survey control.
 HU0274
 HU0274.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0274.See file dsdata.pdf to determine how the superseded data were derived.
 HU0274
 HU0274_MARKER: DB = BENCH MARK DISK
 HU0274_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0274_STAMPING: H 104 1962
 HU0274_MARK LOGO: CGS
 HU0274_PROJECTION: FLUSH
 HU0274_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0274+STABILITY: SURFACE MOTION
 HU0274
 HU0274  HISTORY     - Date     Condition        Report By
 HU0274  HISTORY     - 1962     MONUMENTED       CGS
 HU0274  HISTORY     - 1984     GOOD             MDDT
 HU0274  HISTORY     - 1988     GOOD             USPSQD
 HU0274  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU0274  HISTORY     - 20040409 MARK NOT FOUND   MDSHA
 HU0274
 HU0274                          STATION DESCRIPTION
 HU0274
 HU0274'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0274'1.5 MI SW FROM OCEAN CITY.
 HU0274'0.7 MILE SOUTHWEST ALONG STATE HIGHWAY 611 FROM THE CROSSING OF
 HU0274'THE BALTIMORE AND EASTERN RAILROAD AT WEST OCEAN CITY, THENCE 0.8
 HU0274'MILE SOUTHEAST ALONG BLACKTOPPED ROAD LEADING TO THE OCEAN CITY
 HU0274'AIR PORT.  AT THE OFFICE BUILDING, 53.2 FEET SOUTHEAST OF THE WEST
 HU0274'CORNER AND 4.5 FEET SOUTHWEST OF THE SOUTHWEST SIDE, 8.5 FEET
 HU0274'NORTHWEST OF THE NORTHWEST SIDE OF A RESIDENCE AND LEVEL WITH THE
 HU0274'GROUND.  SET IN THE TOP OF A CONCRETE POST.
 HU0274
 HU0274                          STATION RECOVERY (1984)
 HU0274
 HU0274'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1984
 HU0274'RECOVERED IN GOOD CONDITION.
 HU0274
 HU0274                          STATION RECOVERY (1988)
 HU0274
 HU0274'RECOVERY NOTE BY US POWER SQUADRON 1988 (RBD)
 HU0274'RECOVERED IN GOOD CONDITION.
 HU0274
 HU0274                          STATION RECOVERY (2003)
 HU0274
 HU0274'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0274'MARK NOT FOUND.
 HU0274
 HU0274                          STATION RECOVERY (2004)
 HU0274
 HU0274'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2004 (MRA)
 HU0274'THE OFFICE BUILDING AND RESIDENCE HAVE BEEN REMOVED AND A NEW OFFICE
 HU0274'HAS BEEN BUILT.  THE AREA HAS BEEN GRADED AND PAVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0497 ***********************************************************************
 HU0497  DESIGNATION -  H 106
 HU0497  PID         -  HU0497
 HU0497  STATE/COUNTY-  MD/SOMERSET
 HU0497  COUNTRY     -  US
 HU0497  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0497
 HU0497                         *CURRENT SURVEY CONTROL
 HU0497  ______________________________________________________________________
 HU0497* NAD 83(1986) POSITION- 38 07 38.     (N) 075 38 48.     (W)   SCALED
 HU0497* NAVD 88 ORTHO HEIGHT -     5.632 (meters)       18.48  (feet) ADJUSTED
 HU0497  ______________________________________________________________________
 HU0497  GEOID HEIGHT    -        -36.142 (meters)                     GEOID18
 HU0497  DYNAMIC HEIGHT  -          5.629 (meters)       18.47  (feet) COMP
 HU0497  MODELED GRAVITY -    979,979.8   (mgal)                       NAVD 88
 HU0497
 HU0497  VERT ORDER      -  FIRST     CLASS I
 HU0497
 HU0497.The horizontal coordinates were scaled from a map and have
 HU0497.an estimated accuracy of +/- 6 seconds.
 HU0497
 HU0497.The orthometric height was determined by differential leveling and
 HU0497.adjusted by the NATIONAL GEODETIC SURVEY
 HU0497.in June 1991.
 HU0497
 HU0497.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0497.GEOID18 height accuracy estimate available here.
 HU0497
 HU0497.Click photographs - Photos may exist for this station.
 HU0497
 HU0497.The dynamic height is computed by dividing the NAVD 88
 HU0497.geopotential number by the normal gravity value computed on the
 HU0497.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0497.degrees latitude (g = 980.6199 gals.).
 HU0497
 HU0497.The modeled gravity was interpolated from observed gravity values.
 HU0497
 HU0497;                    North         East    Units  Estimated Accuracy
 HU0497;SPC MD       -    52,000.      518,660.      MT  (+/- 180 meters Scaled)
 HU0497
 HU0497_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH433201(NAD 83)
 HU0497
 HU0497                          SUPERSEDED SURVEY CONTROL
 HU0497
 HU0497  NGVD 29 (11/26/84)    5.884  (m)           19.30   (f) ADJUSTED    1 1
 HU0497
 HU0497.Superseded values are not recommended for survey control.
 HU0497
 HU0497.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0497.See file dsdata.pdf to determine how the superseded data were derived.
 HU0497
 HU0497_MARKER: DB = BENCH MARK DISK
 HU0497_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0497_STAMPING: H 106 1963
 HU0497_MARK LOGO: CGS
 HU0497_PROJECTION: PROJECTING 3 CENTIMETERS
 HU0497_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0497+STABILITY: SURFACE MOTION
 HU0497
 HU0497  HISTORY     - Date     Condition        Report By
 HU0497  HISTORY     - 1963     MONUMENTED       CGS
 HU0497  HISTORY     - 1972     GOOD             NGS
 HU0497
 HU0497                          STATION DESCRIPTION
 HU0497
 HU0497'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0497'5.6 MI NW FROM POCOMOKE CITY.
 HU0497'ABOUT 5.65 MILES NORTHWEST ALONG THE PENN CENTRAL RAILROAD FROM
 HU0497'THE CROSSING OF CLARKE AVENUE AT POCOMOKE CITY, ABOUT 0.95 MILE
 HU0497'SOUTHEAST OF A SAND ROAD CROSSING, 75 1/2 FEET NORTH OF AND ACROSS
 HU0497'THE TRACK FROM MILEPOST 25, 56 1/2 FEET SOUTHWEST OF POWER LINE
 HU0497'POLE NO. 25, 38 1/2 FEET NORTHEAST OF THE NORTHEAST RAIL, 1.5 FEET
 HU0497'NORTHWEST OF A METAL WITNESS POST, 2 FEET BELOW THE LEVEL OF THE
 HU0497'TRACK AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH
 HU0497'ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0410 ***********************************************************************
 HU0410  DESIGNATION -  H 107
 HU0410  PID         -  HU0410
 HU0410  STATE/COUNTY-  MD/WICOMICO
 HU0410  COUNTRY     -  US
 HU0410  USGS QUAD   -  DELMAR (2016)
 HU0410
 HU0410                         *CURRENT SURVEY CONTROL
 HU0410  ______________________________________________________________________
 HU0410* NAD 83(1986) POSITION- 38 26 45.     (N) 075 34 44.     (W)   SCALED
 HU0410* NAVD 88 ORTHO HEIGHT -    14.788 (meters)       48.52  (feet) ADJUSTED
 HU0410  ______________________________________________________________________
 HU0410  GEOID HEIGHT    -        -35.739 (meters)                     GEOID18
 HU0410  DYNAMIC HEIGHT  -         14.779 (meters)       48.49  (feet) COMP
 HU0410  MODELED GRAVITY -    980,012.1   (mgal)                       NAVD 88
 HU0410
 HU0410  VERT ORDER      -  FIRST     CLASS I
 HU0410
 HU0410.The horizontal coordinates were scaled from a map and have
 HU0410.an estimated accuracy of +/- 6 seconds.
 HU0410
 HU0410.The orthometric height was determined by differential leveling and
 HU0410.adjusted by the NATIONAL GEODETIC SURVEY
 HU0410.in June 1991.
 HU0410
 HU0410.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0410.GEOID18 height accuracy estimate available here.
 HU0410
 HU0410.Click photographs - Photos may exist for this station.
 HU0410
 HU0410.The dynamic height is computed by dividing the NAVD 88
 HU0410.geopotential number by the normal gravity value computed on the
 HU0410.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0410.degrees latitude (g = 980.6199 gals.).
 HU0410
 HU0410.The modeled gravity was interpolated from observed gravity values.
 HU0410
 HU0410;                    North         East    Units  Estimated Accuracy
 HU0410;SPC MD       -    87,460.      524,050.      MT  (+/- 180 meters Scaled)
 HU0410
 HU0410_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH494554(NAD 83)
 HU0410
 HU0410                          SUPERSEDED SURVEY CONTROL
 HU0410
 HU0410  NGVD 29 (11/26/84)   15.038  (m)           49.34   (f) ADJUSTED    1 1
 HU0410
 HU0410.Superseded values are not recommended for survey control.
 HU0410
 HU0410.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0410.See file dsdata.pdf to determine how the superseded data were derived.
 HU0410
 HU0410_MARKER: DB = BENCH MARK DISK
 HU0410_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0410_STAMPING: H 107 1963
 HU0410_MARK LOGO: CGS
 HU0410_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0410_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0410+STABILITY: SURFACE MOTION
 HU0410
 HU0410  HISTORY     - Date     Condition        Report By
 HU0410  HISTORY     - 1963     MONUMENTED       CGS
 HU0410  HISTORY     - 19971018 GOOD             USPSQD
 HU0410
 HU0410                          STATION DESCRIPTION
 HU0410
 HU0410'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0410'0.8 MI S FROM DELMAR.
 HU0410'0.8 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION AT
 HU0410'DELMAR, ABOUT 0.25 MILE NORTH OF MILEPOST 1, AT THE CROSSING OF
 HU0410'FOSKEY ROAD, 113.5 FEET SOUTHWEST OF CENTER OF THE CROSSING, 98
 HU0410'FEET SOUTH OF CENTER LINE OF THE ROAD, 46 FEET WEST OF WEST RAIL
 HU0410'OF THE MAIN TRACK, 31 FEET SOUTH OF NORTHEAST CORNER OF A FENCE
 HU0410'LEADING SOUTH AND WEST, 1 FOOT EAST OF THE FENCE LINE, 1.5 FEET
 HU0410'SOUTH OF A STEEL WITNESS POST, ABOUT LEVEL WITH TRACK, AND SET IN
 HU0410'THE TOP OF A CONCRETE POST PROJECTING 3 INCHES.
 HU0410
 HU0410                          STATION RECOVERY (1997)
 HU0410
 HU0410'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0410'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1839 ***********************************************************************
 JU1839  DESIGNATION -  H 108
 JU1839  PID         -  JU1839
 JU1839  STATE/COUNTY-  MD/CECIL
 JU1839  COUNTRY     -  US
 JU1839  USGS QUAD   -  ELKTON (2016)
 JU1839
 JU1839                         *CURRENT SURVEY CONTROL
 JU1839  ______________________________________________________________________
 JU1839* NAD 83(1986) POSITION- 39 30 10.9    (N) 075 50 05.2    (W)   HD_HELD2
 JU1839* NAVD 88 ORTHO HEIGHT -    21.568 (meters)       70.76  (feet) ADJUSTED
 JU1839  ______________________________________________________________________
 JU1839  GEOID HEIGHT    -        -33.363 (meters)                     GEOID18
 JU1839  DYNAMIC HEIGHT  -         21.557 (meters)       70.72  (feet) COMP
 JU1839  MODELED GRAVITY -    980,124.7   (mgal)                       NAVD 88
 JU1839
 JU1839  VERT ORDER      -  FIRST     CLASS I
 JU1839
 JU1839.The horizontal coordinates were established by autonomous hand held GPS
 JU1839.observations and have an estimated accuracy of +/- 10 meters.
 JU1839
 JU1839.The orthometric height was determined by differential leveling and
 JU1839.adjusted by the NATIONAL GEODETIC SURVEY
 JU1839.in June 1991.
 JU1839
 JU1839.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1839.GEOID18 height accuracy estimate available here.
 JU1839
 JU1839.Click photographs - Photos may exist for this station.
 JU1839
 JU1839.The dynamic height is computed by dividing the NAVD 88
 JU1839.geopotential number by the normal gravity value computed on the
 JU1839.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1839.degrees latitude (g = 980.6199 gals.).
 JU1839
 JU1839.The modeled gravity was interpolated from observed gravity values.
 JU1839
 JU1839;                    North         East    Units  Estimated Accuracy
 JU1839;SPC MD       -   204,491.      500,219.      MT  (+/- 10 meters HH2 GPS)
 JU1839
 JU1839_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2822972933(NAD 83)
 JU1839
 JU1839                          SUPERSEDED SURVEY CONTROL
 JU1839
 JU1839  NGVD 29 (11/26/84)   21.809  (m)           71.55   (f) ADJUSTED    1 1
 JU1839
 JU1839.Superseded values are not recommended for survey control.
 JU1839
 JU1839.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1839.See file dsdata.pdf to determine how the superseded data were derived.
 JU1839
 JU1839_MARKER: DB = BENCH MARK DISK
 JU1839_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1839_STAMPING: H 108 1963
 JU1839_MARK LOGO: CGS
 JU1839_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1839+STABILITY: SURFACE MOTION
 JU1839
 JU1839  HISTORY     - Date     Condition        Report By
 JU1839  HISTORY     - 1963     MONUMENTED       CGS
 JU1839  HISTORY     - 1971     GOOD             NGS
 JU1839  HISTORY     - 20041012 MARK NOT FOUND   GEOCAC
 JU1839
 JU1839                          STATION DESCRIPTION
 JU1839
 JU1839'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1839'1.7 MI SW FROM CHESAPEAKE CITY.
 JU1839'ABOUT 1.7 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1839'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1839'DELAWARE CANAL AT CHESAPEAKE CITY, 79 FEET WEST-SOUTHWEST OF THE
 JU1839'CENTER OF THE JUNCTION OF THE HIGHWAY AND COURT HOUSE POINT
 JU1839'ROAD WHICH LEADS WEST, 46 FEET NORTHWEST OF THE CENTER LINE
 JU1839'OF THE HIGHWAY, 30 1/2 FEET SOUTH OF THE CENTER LINE OF THE
 JU1839'ROAD, 13 1/2 FEET NORTH OF POWER POLE NUMBER 65, 2.8 FEET EAST
 JU1839'OF A METAL WITNESS POST, ABOUT 4 FEET ABOVE THE LEVEL OF THE
 JU1839'HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 2
 JU1839'INCHES.
 JU1839
 JU1839                          STATION RECOVERY (2004)
 JU1839
 JU1839'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JU1839'STATION NOT FOUND.  THERE IS A SQUARE CONCRETE MOMUMENT WITH THE STEM
 JU1839'OF A DISK AT ITS CENTER AND PROJECTING ONE INCH AT THE DESCRIBED
 JU1839'LOCATION, AND 13.5 FEET NORTH OF POWER POLE NUMBER 65-40485-34618.  IT
 JU1839'APPEARS THAT THE DISK AND THE TOP ONE INCH OF THE CONCRETE MONUMENT
 JU1839'HAVE BEEN SHEARED OFF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1345 ***********************************************************************
 JV1345  DESIGNATION -  H 109 MDSRC
 JV1345  PID         -  JV1345
 JV1345  STATE/COUNTY-  MD/HOWARD
 JV1345  COUNTRY     -  US
 JV1345  USGS QUAD   -  SAVAGE (2016)
 JV1345
 JV1345                         *CURRENT SURVEY CONTROL
 JV1345  ______________________________________________________________________
 JV1345* NAD 83(1986) POSITION- 39 11 01.     (N) 076 48 45.     (W)   SCALED
 JV1345* NAVD 88 ORTHO HEIGHT -   106.454 (meters)      349.26  (feet) ADJUSTED
 JV1345  ______________________________________________________________________
 JV1345  GEOID HEIGHT    -        -32.283 (meters)                     GEOID18
 JV1345  DYNAMIC HEIGHT  -        106.398 (meters)      349.07  (feet) COMP
 JV1345  MODELED GRAVITY -    980,092.1   (mgal)                       NAVD 88
 JV1345
 JV1345  VERT ORDER      -  SECOND    CLASS 0
 JV1345
 JV1345.The horizontal coordinates were scaled from a map and have
 JV1345.an estimated accuracy of +/- 6 seconds.
 JV1345
 JV1345.The orthometric height was determined by differential leveling and
 JV1345.adjusted by the NATIONAL GEODETIC SURVEY
 JV1345.in June 1991.
 JV1345
 JV1345.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1345.GEOID18 height accuracy estimate available here.
 JV1345
 JV1345.Click photographs - Photos may exist for this station.
 JV1345
 JV1345.The dynamic height is computed by dividing the NAVD 88
 JV1345.geopotential number by the normal gravity value computed on the
 JV1345.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1345.degrees latitude (g = 980.6199 gals.).
 JV1345
 JV1345.The modeled gravity was interpolated from observed gravity values.
 JV1345
 JV1345;                    North         East    Units  Estimated Accuracy
 JV1345;SPC MD       -   168,410.      416,200.      MT  (+/- 180 meters Scaled)
 JV1345
 JV1345_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ434387(NAD 83)
 JV1345
 JV1345                          SUPERSEDED SURVEY CONTROL
 JV1345
 JV1345  NGVD 29 (11/26/84)  106.671  (m)          349.97   (f) ADJUSTED    2 0
 JV1345
 JV1345.Superseded values are not recommended for survey control.
 JV1345
 JV1345.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1345.See file dsdata.pdf to determine how the superseded data were derived.
 JV1345
 JV1345_MARKER: DB = BENCH MARK DISK
 JV1345_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1345_STAMPING: H 109 1965 USC AND GS
 JV1345_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1345+STABILITY: SURFACE MOTION
 JV1345
 JV1345  HISTORY     - Date     Condition        Report By
 JV1345  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1345
 JV1345                          STATION DESCRIPTION
 JV1345
 JV1345'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1345'2.9 MI NW FROM WATERLOO.
 JV1345'ABOUT 1.3 MILES NORTH ALONG STATE HIGHWAY 175 FROM THE INTERSECTION
 JV1345'OF U.S. HIGHWAY 1 AT WATERLOO TO SIDE ROAD LEADING WEST (LARK
 JV1345'BROWN ROAD) THENCE 1.2 MILES ALONG LARK BROWN ROAD TO STATION,
 JV1345'23.0 FT. NORTH OF THE CENTERLINE OF THE ROAD, 19.0 FT. EAST
 JV1345'OF THE PROJECTING CENTERLINE OF A DRIVEWAY, 2 FT. SOUTH OF A
 JV1345'METAL WITNESS POST.  SET IN A CONCRETE POST PROJECTING 4 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1346 ***********************************************************************
 JV1346  DESIGNATION -  H 109 RESET
 JV1346  PID         -  JV1346
 JV1346  STATE/COUNTY-  MD/HOWARD
 JV1346  COUNTRY     -  US
 JV1346  USGS QUAD   -  SAVAGE (2016)
 JV1346
 JV1346                         *CURRENT SURVEY CONTROL
 JV1346  ______________________________________________________________________
 JV1346* NAD 83(1986) POSITION- 39 11 12.8    (N) 076 48 10.3    (W)   HD_HELD2
 JV1346* NAVD 88 ORTHO HEIGHT -   100.158 (meters)      328.60  (feet) ADJUSTED
 JV1346  ______________________________________________________________________
 JV1346  GEOID HEIGHT    -        -32.303 (meters)                     GEOID18
 JV1346  DYNAMIC HEIGHT  -        100.105 (meters)      328.43  (feet) COMP
 JV1346  MODELED GRAVITY -    980,091.2   (mgal)                       NAVD 88
 JV1346
 JV1346  VERT ORDER      -  SECOND    CLASS I
 JV1346
 JV1346.The horizontal coordinates were established by autonomous hand held GPS
 JV1346.observations and have an estimated accuracy of +/- 10 meters.
 JV1346
 JV1346.The orthometric height was determined by differential leveling and
 JV1346.adjusted by the NATIONAL GEODETIC SURVEY
 JV1346.in March 2010.
 JV1346
 JV1346.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1346.GEOID18 height accuracy estimate available here.
 JV1346
 JV1346.Click photographs - Photos may exist for this station.
 JV1346
 JV1346.The dynamic height is computed by dividing the NAVD 88
 JV1346.geopotential number by the normal gravity value computed on the
 JV1346.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1346.degrees latitude (g = 980.6199 gals.).
 JV1346
 JV1346.The modeled gravity was interpolated from observed gravity values.
 JV1346
 JV1346;                    North         East    Units  Estimated Accuracy
 JV1346;SPC MD       -   168,772.      417,032.      MT  (+/- 10 meters HH2 GPS)
 JV1346
 JV1346_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4429339064(NAD 83)
 JV1346
 JV1346                          SUPERSEDED SURVEY CONTROL
 JV1346
 JV1346  NAVD 88 (11/18/05)  100.158  (m)          328.60   (f) SUPERSEDED  3 0
 JV1346  NGVD 29 (??/??/??)  100.38   (m)          329.3    (f) RESET       3  
 JV1346
 JV1346.Superseded values are not recommended for survey control.
 JV1346
 JV1346.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1346.See file dsdata.pdf to determine how the superseded data were derived.
 JV1346
 JV1346_MARKER: DD = SURVEY DISK
 JV1346_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1346_STAMPING: H 109 RESET 1969 USC GS
 JV1346_MARK LOGO: MDBCSM
 JV1346_PROJECTION: RECESSED
 JV1346_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV1346_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1346+STABILITY: SURFACE MOTION
 JV1346_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1346+SATELLITE: SATELLITE OBSERVATIONS - May 25, 2007
 JV1346
 JV1346  HISTORY     - Date     Condition        Report By
 JV1346  HISTORY     - 1969     MONUMENTED       MDBCSM
 JV1346  HISTORY     - 20070525 GOOD             MDSHA
 JV1346
 JV1346                          STATION DESCRIPTION
 JV1346
 JV1346'DESCRIBED BY MD BUR SURV AND MAPS 1969
 JV1346'2 MI NW FROM WATERLOO.
 JV1346'ABOUT 1.3 MILES NORTH ALONG STATE HIGHWAY 175 FROM THE INTERSECTION
 JV1346'OF U.S. HIGHWAY 1 AT WATERLOO, THENCE 0.7 MILE WEST ALONG LARK
 JV1346'BROWN ROAD, 22.5 FEET SOUTH OF THE CENTER LINE OF LARK BROWN
 JV1346'ROAD, 5.1 FEET EAST OF G AND E POLE 139939, 2 FEET NORTH OF A
 JV1346'METAL WITNESS POST, SET IN THE TOP OF A CONCRETE POST 1 INCH
 JV1346'BELOW THE SURFACE OF THE GROUND.
 JV1346
 JV1346                          STATION RECOVERY (2007)
 JV1346
 JV1346'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV1346'THE STATION IS LOCATED ABOUT 3.1 MI (5.0 KM) SOUTHEAST OF COLUMBIA,
 JV1346'2.7 MI (4.3 KM) SOUTH OF JONESTOWN AND 1.7 MI (2.7 KM) WEST-NORTHWEST
 JV1346'OF WATERLOO.
 JV1346'
 JV1346'TO REACH FROM THE STATE HIGHWAY 175 BRIDGE OVER INTERSTATE HIGHWAY 95,
 JV1346'GO NORTHWEST ALONG STATE HIGHWAY 175 FOR 0.65 MI (1.0 KM) TO A SIDE
 JV1346'ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTH ON STATE HIGHWAY 108 FOR
 JV1346'0.3 MI (0.5 KM) TO AN INTERSECTION.  TURN LEFT AND GO SOUTHWEST ON
 JV1346'LARK BROWN ROAD FOR 0.1 MI (0.2 KM) TO A SIDE ROAD ON THE RIGHT.  TURN
 JV1346'RIGHT AND GO WEST ON LARK BROWN ROAD FOR 0.25 MI (0.4 KM) TO THE
 JV1346'STATION ON THE LEFT.
 JV1346'
 JV1346'IT IS 5.3 FT (1.6 M) EAST OF B G AND E POLE NUMBER 139939, 23.0 FT
 JV1346'(7.0 M) SOUTH OF THE CENTERLINE OF LARK BROWN ROAD, 34.5 FT (10.5 M)
 JV1346'WEST OF THE PROJECTED CENTERLINE OF THE CONCRETE SIDEWALK LEADING TO
 JV1346'HOUSE NUMBER 8404, 2.3 FT (0.7 M) NORTH OF A FIBERGLASS WITNESS POST
 JV1346'AND SET IN THE TOP OF A 10-INCH (25 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1347 ***********************************************************************
 JV1347  DESIGNATION -  H 109 X MDSRC
 JV1347  PID         -  JV1347
 JV1347  STATE/COUNTY-  MD/HOWARD
 JV1347  COUNTRY     -  US
 JV1347  USGS QUAD   -  SAVAGE (2016)
 JV1347
 JV1347                         *CURRENT SURVEY CONTROL
 JV1347  ______________________________________________________________________
 JV1347* NAD 83(1986) POSITION- 39 11 01.     (N) 076 48 45.     (W)   SCALED
 JV1347* NAVD 88 ORTHO HEIGHT -   114.24  (meters)      374.8   (feet) RESET
 JV1347  ______________________________________________________________________
 JV1347  GEOID HEIGHT    -        -32.283 (meters)                     GEOID18
 JV1347  VERT ORDER      -  THIRD
 JV1347
 JV1347.The horizontal coordinates were scaled from a map and have
 JV1347.an estimated accuracy of +/- 6 seconds.
 JV1347
 JV1347.The orthometric height was computed from unverified reset data.
 JV1347
 JV1347.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1347.GEOID18 height accuracy estimate available here.
 JV1347
 JV1347.Click photographs - Photos may exist for this station.
 JV1347
 JV1347;                    North         East    Units  Estimated Accuracy
 JV1347;SPC MD       -   168,410.      416,200.      MT  (+/- 180 meters Scaled)
 JV1347
 JV1347_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ434387(NAD 83)
 JV1347
 JV1347                          SUPERSEDED SURVEY CONTROL
 JV1347
 JV1347  NGVD 29 (??/??/??)  114.45   (m)          375.5    (f) RESET       3  
 JV1347
 JV1347.Superseded values are not recommended for survey control.
 JV1347
 JV1347.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1347.See file dsdata.pdf to determine how the superseded data were derived.
 JV1347
 JV1347_MARKER: DB = BENCH MARK DISK
 JV1347_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1347_STAMPING: H 109 X 1969
 JV1347_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1347+STABILITY: SURFACE MOTION
 JV1347
 JV1347  HISTORY     - Date     Condition        Report By
 JV1347  HISTORY     - 1969     MONUMENTED       MDSRC
 JV1347
 JV1347                          STATION DESCRIPTION
 JV1347
 JV1347'DESCRIBED BY MD STATE ROADS COMM 1969
 JV1347'3.3 MI N FROM SAVAGE.
 JV1347'FROM THE INTERSECTION OF U.S. HIGHWAY 1 AND STATE HIGHWAY 32,
 JV1347'ABOUT 1 MILE NORTHEAST OF SAVAGE, GO NORTHWESTERLY ON STATE
 JV1347'HIGHWAY 32 FOR 1.8 MILES TO FORKS, BEAR RIGHT AND CONTINUE FOR
 JV1347'0.5 MILE TO A FARM LANE AND THE MARK ON THE RIGHT, 42.3 FEET
 JV1347'EAST OF THE CENTER LINE OF OAKLAND MILLS ROAD, 22.9 FEET EAST OF
 JV1347'C AND P POLE 75, 22.5 FEET WEST OF A GUY POLE, 11.8 FEET WEST
 JV1347'OF THE CENTERLINE OF THE FARM LANE, 1.7 FEET WEST OF A FENCE
 JV1347'LINE, SET IN THE TOP OF A CONCRETE POST 1 INCH BELOW THE SURFACE
 JV1347'OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1196 ***********************************************************************
 JU1196  DESIGNATION -  H 11
 JU1196  PID         -  JU1196
 JU1196  STATE/COUNTY-  MD/KENT
 JU1196  COUNTRY     -  US
 JU1196  USGS QUAD   -  MILLINGTON (2016)
 JU1196
 JU1196                         *CURRENT SURVEY CONTROL
 JU1196  ______________________________________________________________________
 JU1196* NAD 83(1986) POSITION- 39 20 12.     (N) 075 46 32.     (W)   SCALED
 JU1196* NAVD 88 ORTHO HEIGHT -    23.385 (meters)       76.72  (feet) ADJUSTED
 JU1196  ______________________________________________________________________
 JU1196  GEOID HEIGHT    -        -33.615 (meters)                     GEOID18
 JU1196  DYNAMIC HEIGHT  -         23.373 (meters)       76.68  (feet) COMP
 JU1196  MODELED GRAVITY -    980,111.6   (mgal)                       NAVD 88
 JU1196
 JU1196  VERT ORDER      -  SECOND    CLASS 0
 JU1196
 JU1196.The horizontal coordinates were scaled from a map and have
 JU1196.an estimated accuracy of +/- 6 seconds.
 JU1196
 JU1196.The orthometric height was determined by differential leveling and
 JU1196.adjusted by the NATIONAL GEODETIC SURVEY
 JU1196.in June 1991.
 JU1196
 JU1196.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1196.GEOID18 height accuracy estimate available here.
 JU1196
 JU1196.Click photographs - Photos may exist for this station.
 JU1196
 JU1196.The dynamic height is computed by dividing the NAVD 88
 JU1196.geopotential number by the normal gravity value computed on the
 JU1196.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1196.degrees latitude (g = 980.6199 gals.).
 JU1196
 JU1196.The modeled gravity was interpolated from observed gravity values.
 JU1196
 JU1196;                    North         East    Units  Estimated Accuracy
 JU1196;SPC MD       -   186,090.      505,560.      MT  (+/- 180 meters Scaled)
 JU1196
 JU1196_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ331544(NAD 83)
 JU1196
 JU1196                          SUPERSEDED SURVEY CONTROL
 JU1196
 JU1196  NGVD 29 (11/26/84)   23.626  (m)           77.51   (f) ADJUSTED    2 0
 JU1196
 JU1196.Superseded values are not recommended for survey control.
 JU1196
 JU1196.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1196.See file dsdata.pdf to determine how the superseded data were derived.
 JU1196
 JU1196_MARKER: DB = BENCH MARK DISK
 JU1196_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1196_STAMPING: H 11 1935
 JU1196_MARK LOGO: CGS
 JU1196_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1196+STABILITY: SURFACE MOTION
 JU1196
 JU1196  HISTORY     - Date     Condition        Report By
 JU1196  HISTORY     - 1935     MONUMENTED       CGS
 JU1196  HISTORY     - 1964     GOOD             CGS
 JU1196  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JU1196  HISTORY     - 20130404 MARK NOT FOUND   DELCOS
 JU1196
 JU1196                          STATION DESCRIPTION
 JU1196
 JU1196'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1196'AT GOLTS.
 JU1196'ON THE PENNSYLVANIA RAILROAD AT GOLTS, 37 FEET SOUTH OF THE
 JU1196'ROAD AND RAILROAD CROSSING, 33 FEET SOUTHWEST OF THE MACADAM
 JU1196'ROAD, 24 FEET SOUTHEAST OF THE SOUTHEAST RAIL AND 7 FEET NORTH
 JU1196'OF THE NORTH SIDE OF A BUILDING.  A STANDARD DISK IN THE TOP OF
 JU1196'A CONCRETE POST AND PROJECTS 4 INCHES.
 JU1196
 JU1196                          STATION RECOVERY (1990)
 JU1196
 JU1196'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1196'MARK NOT FOUND.
 JU1196
 JU1196                          STATION RECOVERY (2013)
 JU1196
 JU1196'RECOVERY NOTE BY DELAWARE COASTAL PROGRAM 2013
 JU1196'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6006 ***********************************************************************
 DN6006  DESIGNATION -  H 11
 DN6006  PID         -  DN6006
 DN6006  STATE/COUNTY-  MD/CARROLL
 DN6006  COUNTRY     -  US
 DN6006  USGS QUAD   -  WESTMINSTER (2016)
 DN6006
 DN6006                         *CURRENT SURVEY CONTROL
 DN6006  ______________________________________________________________________
 DN6006* NAD 83(1986) POSITION- 39 36 16.6    (N) 076 55 12.8    (W)   HD_HELD2
 DN6006* NAVD 88 ORTHO HEIGHT -   226.813 (meters)      744.14  (feet) ADJUSTED
 DN6006  ______________________________________________________________________
 DN6006  GEOID HEIGHT    -        -32.207 (meters)                     GEOID18
 DN6006  DYNAMIC HEIGHT  -        226.697 (meters)      743.76  (feet) COMP
 DN6006  MODELED GRAVITY -    980,106.3   (mgal)                       NAVD 88
 DN6006
 DN6006  VERT ORDER      -  SECOND    CLASS II
 DN6006
 DN6006.The horizontal coordinates were established by autonomous hand held GPS
 DN6006.observations and have an estimated accuracy of +/- 10 meters.
 DN6006
 DN6006.The orthometric height was determined by differential leveling and
 DN6006.adjusted by the NATIONAL GEODETIC SURVEY
 DN6006.in June 2012.
 DN6006
 DN6006.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6006.GEOID18 height accuracy estimate available here.
 DN6006
 DN6006.Click photographs - Photos may exist for this station.
 DN6006
 DN6006.The dynamic height is computed by dividing the NAVD 88
 DN6006.geopotential number by the normal gravity value computed on the
 DN6006.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6006.degrees latitude (g = 980.6199 gals.).
 DN6006
 DN6006.The modeled gravity was interpolated from observed gravity values.
 DN6006
 DN6006;                    North         East    Units  Estimated Accuracy
 DN6006;SPC MD       -   215,133.      406,852.      MT  (+/- 10 meters HH2 GPS)
 DN6006
 DN6006_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3514385635(NAD 83)
 DN6006
 DN6006                          SUPERSEDED SURVEY CONTROL
 DN6006
 DN6006.No superseded survey control is available for this station.
 DN6006
 DN6006_MARKER: DD = SURVEY DISK
 DN6006_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DN6006_SP_SET: BOX CULVERT HEADWALL
 DN6006_STAMPING: H-11 1982
 DN6006_MARK LOGO: MD-013
 DN6006_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6006+STABILITY: SURFACE MOTION
 DN6006_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DN6006+SATELLITE: SATELLITE OBSERVATIONS - February 01, 2008
 DN6006
 DN6006  HISTORY     - Date     Condition        Report By
 DN6006  HISTORY     - 1982     MONUMENTED       MD-013
 DN6006  HISTORY     - 20080201 GOOD             MDSHA
 DN6006
 DN6006                          STATION DESCRIPTION
 DN6006
 DN6006'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6006'THE MARK IS LOCATED ABOUT 4.6 MI (7.4 KM) EAST-NORTHEAST OF
 DN6006'WESTMINSTER, 4.2 MI (6.8 KM) SOUTH-SOUTHWEST OF MANCHESTER AND 3.7 MI
 DN6006'(6.0 KM) WEST OF HAMPSTEAD.
 DN6006'
 DN6006'TO REACH THE MARK FROM THE RAILROAD TRACKS AT THE INTERSECTION OF
 DN6006'MARYLAND ROUTE 27 AND MAIN STREET IN WESTMINSTER, GO NORTHEAST ON
 DN6006'MARYLAND ROUTE 27 FOR 3.2 MI (5.1 KM) TO MARYLAND ROUTE 482.  TURN
 DN6006'RIGHT AND GO NORTHEAST ON MARYLAND ROUTE 482 FOR 1.5 MI (2.4 KM) TO A
 DN6006'BOX CULVERT FOR ASPEN RUN AND THE MARK ON THE LEFT.
 DN6006'
 DN6006'IT IS 15.0 FT (4.6 M) NORTHWEST OF THE CENTERLINE OF MARYLAND ROUTE
 DN6006'482, 35.5 FT (10.8 M) NORTH OF G AND E POLE 154302 AND SET IN THE
 DN6006'NORTHWEST END OF THE HEADWALL OF BOX CULVERT NUMBER 06085X0.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1312 ***********************************************************************
 JV1312  DESIGNATION -  H 110 MDSRC
 JV1312  PID         -  JV1312
 JV1312  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1312  COUNTRY     -  US
 JV1312  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1312
 JV1312                         *CURRENT SURVEY CONTROL
 JV1312  ______________________________________________________________________
 JV1312* NAD 83(1986) POSITION- 39 16 52.     (N) 076 33 08.     (W)   SCALED
 JV1312* NAVD 88 ORTHO HEIGHT -    18.034 (meters)       59.17  (feet) ADJUSTED
 JV1312  ______________________________________________________________________
 JV1312  GEOID HEIGHT    -        -32.882 (meters)                     GEOID18
 JV1312  DYNAMIC HEIGHT  -         18.024 (meters)       59.13  (feet) COMP
 JV1312  MODELED GRAVITY -    980,099.8   (mgal)                       NAVD 88
 JV1312
 JV1312  VERT ORDER      -  FIRST     CLASS II
 JV1312
 JV1312.The horizontal coordinates were scaled from a map and have
 JV1312.an estimated accuracy of +/- 6 seconds.
 JV1312
 JV1312.The orthometric height was determined by differential leveling and
 JV1312.adjusted by the NATIONAL GEODETIC SURVEY
 JV1312.in June 1991.
 JV1312
 JV1312.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1312.GEOID18 height accuracy estimate available here.
 JV1312
 JV1312.Click photographs - Photos may exist for this station.
 JV1312
 JV1312.The dynamic height is computed by dividing the NAVD 88
 JV1312.geopotential number by the normal gravity value computed on the
 JV1312.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1312.degrees latitude (g = 980.6199 gals.).
 JV1312
 JV1312.The modeled gravity was interpolated from observed gravity values.
 JV1312
 JV1312;                    North         East    Units  Estimated Accuracy
 JV1312;SPC MD       -   179,310.      438,630.      MT  (+/- 180 meters Scaled)
 JV1312
 JV1312_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ661491(NAD 83)
 JV1312
 JV1312                          SUPERSEDED SURVEY CONTROL
 JV1312
 JV1312  NGVD 29 (11/26/84)   18.276  (m)           59.96   (f) ADJUSTED    1 2
 JV1312
 JV1312.Superseded values are not recommended for survey control.
 JV1312
 JV1312.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1312.See file dsdata.pdf to determine how the superseded data were derived.
 JV1312
 JV1312_MARKER: DB = BENCH MARK DISK
 JV1312_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1312_STAMPING: H-110 1965
 JV1312_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1312+STABILITY: SURFACE MOTION
 JV1312
 JV1312  HISTORY     - Date     Condition        Report By
 JV1312  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1312  HISTORY     - 20140519 MARK NOT FOUND   USPSQD
 JV1312
 JV1312                          STATION DESCRIPTION
 JV1312
 JV1312'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1312'IN BALTIMORE.
 JV1312'STATION IS LOCATED 0.75 MILE SOUTH OF THE BALTIMORE CITY HOSPITAL
 JV1312'AT THE EXIT RAMP OF THE HARBOR TUNNEL ON O DONNELL STREET, 30.0
 JV1312'FEET NORTH OF THE CENTERLINE OF O DONNELL STREET, 39.0 FEET
 JV1312'EAST OF LIGHT POLE 6, 37.6 FEET SOUTH OF LIGHT POLE N 151, AND
 JV1312'16.8 FEET SOUTHEAST OF THE CENTERLINE OF THE TUNNEL EXIT RAMP,
 JV1312'SET IN THE TOP OF A CONCRETE POST PROJECTING 1 IN.
 JV1312
 JV1312                          STATION RECOVERY (2014)
 JV1312
 JV1312'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV1312'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2442 ***********************************************************************
 HV2442  DESIGNATION -  H 111 RESET
 HV2442  PID         -  HV2442
 HV2442  STATE/COUNTY-  MD/CHARLES
 HV2442  COUNTRY     -  US
 HV2442  USGS QUAD   -  MOUNT VERNON (2019)
 HV2442
 HV2442                         *CURRENT SURVEY CONTROL
 HV2442  ______________________________________________________________________
 HV2442* NAD 83(2011) POSITION- 38 38 07.22348(N) 077 03 23.02384(W)   ADJUSTED
 HV2442* NAD 83(2011) ELLIP HT-    24.011 (meters)        (06/27/12)   ADJUSTED
 HV2442* NAD 83(2011) EPOCH   -  2010.00
 HV2442* NAVD 88 ORTHO HEIGHT -    56.6   (meters)      186.    (feet) GPS OBS
 HV2442  ______________________________________________________________________
 HV2442  NAVD 88 orthometric height was determined with geoid model    GEOID93
 HV2442  GEOID HEIGHT    -        -32.930 (meters)                     GEOID93
 HV2442  GEOID HEIGHT    -        -32.556 (meters)                     GEOID18
 HV2442  NAD 83(2011) X  -  1,117,433.188 (meters)                     COMP
 HV2442  NAD 83(2011) Y  - -4,861,963.355 (meters)                     COMP
 HV2442  NAD 83(2011) Z  -  3,960,791.003 (meters)                     COMP
 HV2442  LAPLACE CORR    -         -2.72  (seconds)                    DEFLEC18
 HV2442
 HV2442  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV2442  Standards:
 HV2442         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV2442            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV2442  -------------------------------------------------------------------
 HV2442  NETWORK    1.64   3.70           0.69   0.65   1.89     -0.01459091
 HV2442  -------------------------------------------------------------------
 HV2442  Click here for local accuracies and other accuracy information.
 HV2442
 HV2442.The horizontal coordinates were established by GPS observations
 HV2442.and adjusted by the National Geodetic Survey in June 2012.
 HV2442
 HV2442.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV2442.been affixed to the stable North American tectonic plate. See 
 HV2442.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV2442
 HV2442.The horizontal coordinates are valid at the epoch date displayed above
 HV2442.which is a decimal equivalence of Year/Month/Day.
 HV2442
 HV2442.The orthometric height was determined by GPS observations and a
 HV2442.high-resolution geoid model.
 HV2442
 HV2442.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2442.GEOID18 height accuracy estimate available here.
 HV2442
 HV2442.Click photographs - Photos may exist for this station.
 HV2442
 HV2442.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV2442
 HV2442.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV2442
 HV2442.The ellipsoidal height was determined by GPS observations
 HV2442.and is referenced to NAD 83.
 HV2442
 HV2442. The following values were computed from the NAD 83(2011) position.
 HV2442
 HV2442;                    North         East     Units Scale Factor Converg.
 HV2442;SPC MD       -   107,528.012   395,089.886   MT  0.99995861   -0 02 07.4
 HV2442;SPC MD       -   352,781.49  1,296,224.07   sFT  0.99995861   -0 02 07.4
 HV2442;SPC VA N     - 2,108,509.544 3,625,681.960   MT  0.99994843   +0 54 03.5
 HV2442;SPC VA N     - 6,917,668.40 11,895,258.23   sFT  0.99994843   +0 54 03.5
 HV2442;UTM  18      - 4,278,317.040   321,014.160   MT  0.99999452   -1 17 03.4
 HV2442
 HV2442!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV2442!SPC MD       -   0.99999623  x   0.99995861  =   0.99995484
 HV2442!SPC VA N     -   0.99999623  x   0.99994843  =   0.99994466
 HV2442!UTM  18      -   0.99999623  x   0.99999452  =   0.99999075
 HV2442
 HV2442_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2101478317(NAD 83)
 HV2442
 HV2442                          SUPERSEDED SURVEY CONTROL
 HV2442
 HV2442  NAD 83(2007)-  38 38 07.22391(N)    077 03 23.02467(W) AD(2002.00) 0
 HV2442  ELLIP H (02/10/07)   24.012  (m)                       GP(2002.00)    
 HV2442  ELLIP H (05/17/02)   24.022  (m)                       GP(       ) 4 2
 HV2442  NAD 83(1993)-  38 38 07.22365(N)    077 03 23.02505(W) AD(       ) 1
 HV2442  ELLIP H (11/14/94)   24.057  (m)                       GP(       ) 4 2
 HV2442  ELLIP H (09/09/94)   24.046  (m)                       GP(       ) 4 1
 HV2442  NAD 83(1991)-  38 38 07.22198(N)    077 03 23.02621(W) AD(       ) 1
 HV2442  NGVD 29 (??/??/??)   56.88   (m)          186.6    (f) RESET       3  
 HV2442
 HV2442.Superseded values are not recommended for survey control.
 HV2442
 HV2442.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2442.See file dsdata.pdf to determine how the superseded data were derived.
 HV2442
 HV2442_MARKER: DB = BENCH MARK DISK
 HV2442_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2442_STAMPING: H 111 RESET 1971 USCGS
 HV2442_MARK LOGO: MDBCSM
 HV2442_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV2442_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2442+STABILITY: SURFACE MOTION
 HV2442_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV2442+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2004
 HV2442
 HV2442  HISTORY     - Date     Condition        Report By
 HV2442  HISTORY     - 1971     MONUMENTED       MDSRC
 HV2442  HISTORY     - 19930331 GOOD             MSI
 HV2442  HISTORY     - 20040915 GOOD             GEOCAC
 HV2442
 HV2442                          STATION DESCRIPTION
 HV2442
 HV2442'DESCRIBED BY MD STATE ROADS COMM 1971
 HV2442'6.2 MI N FROM INDIAN HEAD.
 HV2442'STATION IS LOCATED 300 FEET SOUTH OF THE PRINCE GEORGES COUNTY
 HV2442'LINE ALONG MARYLAND HIGHWAY 210 AT A CINDER BLOCK CHURCH,
 HV2442'66.0 FEET NORTHWEST OF THE CENTERLINE OF SOUTH BOUND ROADWAY
 HV2442'OF MARYLAND 210, 40.0 FEET SOUTH OF THE CENTERLINE OF A COUNTY
 HV2442'ROAD, 89.0 FEET EAST OF THE SOUTHEAST CORNER OF THE CHURCH
 HV2442'AND 2.3 FEET NORTHWEST OF A POWER POLE NO. 167.  A STANDARD
 HV2442'MBCS BENCH MARK DISK SET IN THE TOP OF A CONCRETE POST FLUSH
 HV2442'WITH THE GROUND, STAMPED H 111 RESET 1971 USC AND GS.
 HV2442
 HV2442                          STATION RECOVERY (1993)
 HV2442
 HV2442'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1993
 HV2442'RECOVERED IN GOOD CONDITION.
 HV2442
 HV2442                          STATION RECOVERY (2004)
 HV2442
 HV2442'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV2442'THE STATION ALSO LIES ABOUT 22.0 FEET SOUTHWEST OF THE NORTHWEST END
 HV2442'OF A BRICK WALL THAT SUPPORTS A CHARLES COUNTY WELCOME SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1287 ***********************************************************************
 JV1287  DESIGNATION -  H 112
 JV1287  PID         -  JV1287
 JV1287  STATE/COUNTY-  MD/BALTIMORE
 JV1287  COUNTRY     -  US
 JV1287  USGS QUAD   -  REISTERSTOWN (2016)
 JV1287
 JV1287                         *CURRENT SURVEY CONTROL
 JV1287  ______________________________________________________________________
 JV1287* NAD 83(1986) POSITION- 39 26 26.     (N) 076 48 22.     (W)   SCALED
 JV1287* NAVD 88 ORTHO HEIGHT -   200.281 (meters)      657.09  (feet) ADJUSTED
 JV1287  ______________________________________________________________________
 JV1287  GEOID HEIGHT    -        -32.111 (meters)                     GEOID18
 JV1287  DYNAMIC HEIGHT  -        200.176 (meters)      656.74  (feet) COMP
 JV1287  MODELED GRAVITY -    980,095.7   (mgal)                       NAVD 88
 JV1287
 JV1287  VERT ORDER      -  SECOND    CLASS 0
 JV1287
 JV1287.The horizontal coordinates were scaled from a map and have
 JV1287.an estimated accuracy of +/- 6 seconds.
 JV1287
 JV1287.The orthometric height was determined by differential leveling and
 JV1287.adjusted by the NATIONAL GEODETIC SURVEY
 JV1287.in June 1991.
 JV1287
 JV1287.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1287.GEOID18 height accuracy estimate available here.
 JV1287
 JV1287.Click photographs - Photos may exist for this station.
 JV1287
 JV1287.The dynamic height is computed by dividing the NAVD 88
 JV1287.geopotential number by the normal gravity value computed on the
 JV1287.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1287.degrees latitude (g = 980.6199 gals.).
 JV1287
 JV1287.The modeled gravity was interpolated from observed gravity values.
 JV1287
 JV1287;                    North         East    Units  Estimated Accuracy
 JV1287;SPC MD       -   196,930.      416,690.      MT  (+/- 180 meters Scaled)
 JV1287
 JV1287_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ445672(NAD 83)
 JV1287
 JV1287                          SUPERSEDED SURVEY CONTROL
 JV1287
 JV1287  NGVD 29 (11/26/84)  200.499  (m)          657.80   (f) ADJUSTED    2 0
 JV1287
 JV1287.Superseded values are not recommended for survey control.
 JV1287
 JV1287.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1287.See file dsdata.pdf to determine how the superseded data were derived.
 JV1287
 JV1287_MARKER: DB = BENCH MARK DISK
 JV1287_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1287_SP_SET: SIGN
 JV1287_STAMPING: H-112 1967 USC AND GS
 JV1287_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1287
 JV1287  HISTORY     - Date     Condition        Report By
 JV1287  HISTORY     - 1967     MONUMENTED       MDSRC
 JV1287  HISTORY     - 20100217 MARK NOT FOUND   JARICE
 JV1287
 JV1287                          STATION DESCRIPTION
 JV1287
 JV1287'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1287'AT DELIGHT.
 JV1287'FROM THE BRIDGE OVER THE BALTIMORE BELTWAY PROCEED NORTHWEST ALONG
 JV1287'U.S. 140 (REISTERSTOWN ROAD) FOR 5.4 MILES AND STATION ON EAST
 JV1287'SIDE OF HIGHWAY.  IT IS 52.8 FEET EAST OF THE CENTERLINE OF U.S.
 JV1287'140, 32.8 FEET SOUTH OF THE CENTERLINE OF TIMBER GROVE ROAD AND 3.0
 JV1287'FEET NORTHWEST OF THE CORNER OF A STORE.  A STANDARD DISK SET
 JV1287'IN A DRILLED HOLE IN A CONCRETE BASE OF A NEON SIGN IN FRONT OF A
 JV1287'STORE AND STAMPED H-112 1967 U.S.C. AND G.S.
 JV1287
 JV1287                          STATION RECOVERY (2010)
 JV1287
 JV1287'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV1287'NEW CONSTRUCTION AT THIS LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6408 ***********************************************************************
 JV6408  DESIGNATION -  H 113
 JV6408  PID         -  JV6408
 JV6408  STATE/COUNTY-  MD/MONTGOMERY
 JV6408  COUNTRY     -  US
 JV6408  USGS QUAD   -  GAITHERSBURG (2016)
 JV6408
 JV6408                         *CURRENT SURVEY CONTROL
 JV6408  ______________________________________________________________________
 JV6408* NAD 83(2011) POSITION- 39 07 49.09823(N) 077 12 33.89397(W)   ADJUSTED
 JV6408* NAD 83(2011) ELLIP HT-   104.191 (meters)        (06/27/12)   ADJUSTED
 JV6408* NAD 83(2011) EPOCH   -  2010.00
 JV6408* NAVD 88 ORTHO HEIGHT -   135.943 (meters)      446.01  (feet) ADJUSTED
 JV6408  ______________________________________________________________________
 JV6408  GEOID HEIGHT    -        -31.735 (meters)                     GEOID18
 JV6408  NAD 83(2011) X  -  1,096,821.977 (meters)                     COMP
 JV6408  NAD 83(2011) Y  - -4,831,354.562 (meters)                     COMP
 JV6408  NAD 83(2011) Z  -  4,003,614.640 (meters)                     COMP
 JV6408  LAPLACE CORR    -          1.24  (seconds)                    DEFLEC18
 JV6408  DYNAMIC HEIGHT  -        135.871 (meters)      445.77  (feet) COMP
 JV6408  MODELED GRAVITY -    980,100.1   (mgal)                       NAVD 88
 JV6408
 JV6408  VERT ORDER      -  FIRST     CLASS 0
 JV6408
 JV6408  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6408  Standards:
 JV6408         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6408            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6408  -------------------------------------------------------------------
 JV6408  NETWORK    1.29   1.92           0.59   0.44   0.98      0.12735001
 JV6408  -------------------------------------------------------------------
 JV6408  Click here for local accuracies and other accuracy information.
 JV6408
 JV6408.The horizontal coordinates were established by GPS observations
 JV6408.and adjusted by the National Geodetic Survey in June 2012.
 JV6408
 JV6408.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6408.been affixed to the stable North American tectonic plate. See 
 JV6408.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6408
 JV6408.The horizontal coordinates are valid at the epoch date displayed above
 JV6408.which is a decimal equivalence of Year/Month/Day.
 JV6408
 JV6408.The orthometric height was determined by differential leveling and
 JV6408.adjusted by the NATIONAL GEODETIC SURVEY
 JV6408.in July 1994.
 JV6408
 JV6408.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6408.GEOID18 height accuracy estimate available here.
 JV6408
 JV6408.Click photographs - Photos may exist for this station.
 JV6408
 JV6408.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6408
 JV6408.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6408
 JV6408.The ellipsoidal height was determined by GPS observations
 JV6408.and is referenced to NAD 83.
 JV6408
 JV6408.The dynamic height is computed by dividing the NAVD 88
 JV6408.geopotential number by the normal gravity value computed on the
 JV6408.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6408.degrees latitude (g = 980.6199 gals.).
 JV6408
 JV6408.The modeled gravity was interpolated from observed gravity values.
 JV6408
 JV6408. The following values were computed from the NAD 83(2011) position.
 JV6408
 JV6408;                    North         East     Units Scale Factor Converg.
 JV6408;SPC MD       -   162,492.374   381,893.199   MT  0.99995969   -0 07 53.2
 JV6408;SPC MD       -   533,110.40  1,252,927.94   sFT  0.99995969   -0 07 53.2
 JV6408;UTM  18      - 4,333,561.236   309,024.553   MT  1.00004910   -1 23 41.1
 JV6408
 JV6408!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6408!SPC MD       -   0.99998365  x   0.99995969  =   0.99994334
 JV6408!UTM  18      -   0.99998365  x   1.00004910  =   1.00003275
 JV6408
 JV6408_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0902433561(NAD 83)
 JV6408
 JV6408                          SUPERSEDED SURVEY CONTROL
 JV6408
 JV6408  NAD 83(2007)-  39 07 49.09844(N)    077 12 33.89477(W) AD(2002.00) 0
 JV6408  ELLIP H (02/10/07)  104.224  (m)                       GP(2002.00)    
 JV6408  ELLIP H (08/30/02)  104.226  (m)                       GP(       ) 4 2
 JV6408  ELLIP H (04/01/98)  104.281  (m)                       GP(       ) 4 1
 JV6408  NAD 83(1993)-  39 07 49.09821(N)    077 12 33.89471(W) AD(       ) 1
 JV6408  ELLIP H (11/14/94)  104.128  (m)                       GP(       ) 4 2
 JV6408  NAD 83(1991)-  39 07 49.09603(N)    077 12 33.89311(W) AD(       ) 1
 JV6408  ELLIP H (03/04/93)  104.165  (m)                       GP(       ) 4 1
 JV6408  NAVD 88 (03/04/93)  135.9    (m)  GEOID90  model used  GPS OBS        
 JV6408  NGVD 29 (??/??/92)  136.15   (m)          446.7    (f) COMPUTED    1 0
 JV6408
 JV6408.Superseded values are not recommended for survey control.
 JV6408
 JV6408.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6408.See file dsdata.pdf to determine how the superseded data were derived.
 JV6408
 JV6408_MARKER: DB = BENCH MARK DISK
 JV6408_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV6408_STAMPING: H 113 1968
 JV6408_MARK LOGO: CGS
 JV6408_PROJECTION: FLUSH
 JV6408_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6408_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6408_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6408+SATELLITE: SATELLITE OBSERVATIONS - September 12, 1997
 JV6408_ROD/PIPE-DEPTH: 7.5 meters
 JV6408
 JV6408  HISTORY     - Date     Condition        Report By
 JV6408  HISTORY     - 1968     MONUMENTED       CGS
 JV6408  HISTORY     - 19741015 GOOD             NGS
 JV6408  HISTORY     - 19911015 GOOD             NGS
 JV6408  HISTORY     - 19920609 GOOD
 JV6408  HISTORY     - 19970912 GOOD             NGS
 JV6408
 JV6408                          STATION DESCRIPTION
 JV6408
 JV6408'DESCRIBED BY COAST AND GEODETIC SURVEY 1968
 JV6408'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6408'TECHNOLOGY GROUNDS, ABOUT 0.3 MI (0.48 KM) SOUTHEAST AND ACROSS
 JV6408'COUNTRY FROM THE JUNCTION OF EAST DRIVE AND SOUTH DRIVE, NEAR THE TOP
 JV6408'OF A HILL, AT THE NORTHEAST CORNER OF SIX ROWS OF PLANTED PINE TREES,
 JV6408'18.7 FT (5.70 M) EAST-NORTHEST OF BENCH MARK PIPE 3, 14 FT (4.27 M)
 JV6408'NORTH OF THE NORTH PINE TREE IN THE EAST ROW AND IN LINE WITH THE ROW
 JV6408'OF TREES .  NOTE--ACCESS IS THROUGH A 5-INCH METAL COVER.
 JV6408
 JV6408                          STATION RECOVERY (1974)
 JV6408
 JV6408'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 JV6408'RECOVERED IN GOOD CONDITION.
 JV6408
 JV6408                          STATION RECOVERY (1991)
 JV6408
 JV6408'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV6408'RECOVERED IN GOOD CONDITION.
 JV6408
 JV6408                          STATION RECOVERY (1992)
 JV6408
 JV6408'RECOVERED 1992
 JV6408'RECOVERED IN GOOD CONDITION.
 JV6408
 JV6408                          STATION RECOVERY (1997)
 JV6408
 JV6408'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (RLA)
 JV6408'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1171 ***********************************************************************
 JU1171  DESIGNATION -  H 114
 JU1171  PID         -  JU1171
 JU1171  STATE/COUNTY-  MD/KENT
 JU1171  COUNTRY     -  US
 JU1171  USGS QUAD   -  GALENA (2017)
 JU1171
 JU1171                         *CURRENT SURVEY CONTROL
 JU1171  ______________________________________________________________________
 JU1171* NAD 83(2011) POSITION- 39 19 30.28623(N) 075 57 45.37817(W)   ADJUSTED
 JU1171* NAD 83(2011) ELLIP HT-   -10.401 (meters)        (09/18/23)   ADJUSTED
 JU1171* NAD 83(2011) EPOCH   -  2010.00
 JU1171* NAVD 88 ORTHO HEIGHT -    22.996 (meters)       75.45  (feet) ADJUSTED
 JU1171  ______________________________________________________________________
 JU1171  GEOID HEIGHT    -        -33.434 (meters)                     GEOID18
 JU1171  NAD 83(2011) X  -  1,198,350.314 (meters)                     COMP
 JU1171  NAD 83(2011) Y  - -4,792,991.870 (meters)                     COMP
 JU1171  NAD 83(2011) Z  -  4,020,292.944 (meters)                     COMP
 JU1171  LAPLACE CORR    -         -2.58  (seconds)                    DEFLEC18
 JU1171  DYNAMIC HEIGHT  -         22.984 (meters)       75.41  (feet) COMP
 JU1171  MODELED GRAVITY -    980,114.0   (mgal)                       NAVD 88
 JU1171
 JU1171  VERT ORDER      -  FIRST     CLASS II
 JU1171
 JU1171  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU1171  Standards:
 JU1171         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU1171            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU1171  -------------------------------------------------------------------
 JU1171  NETWORK    0.39   0.92           0.17   0.15   0.47     -0.01945892
 JU1171  -------------------------------------------------------------------
 JU1171  Click here for local accuracies and other accuracy information.
 JU1171
 JU1171.The horizontal coordinates were established by GPS observations
 JU1171.and adjusted by the MD DEPT OF TRANSP in September 2023.
 JU1171
 JU1171.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU1171.been affixed to the stable North American tectonic plate. See 
 JU1171.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU1171
 JU1171.The horizontal coordinates are valid at the epoch date displayed above
 JU1171.which is a decimal equivalence of Year/Month/Day.
 JU1171
 JU1171.The orthometric height was determined by differential leveling and
 JU1171.adjusted by the NATIONAL GEODETIC SURVEY
 JU1171.in June 1991.
 JU1171
 JU1171.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1171.GEOID18 height accuracy estimate available here.
 JU1171
 JU1171.Click photographs - Photos may exist for this station.
 JU1171
 JU1171.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU1171
 JU1171.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU1171
 JU1171.The ellipsoidal height was determined by GPS observations
 JU1171.and is referenced to NAD 83.
 JU1171
 JU1171.The dynamic height is computed by dividing the NAVD 88
 JU1171.geopotential number by the normal gravity value computed on the
 JU1171.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1171.degrees latitude (g = 980.6199 gals.).
 JU1171
 JU1171.The modeled gravity was interpolated from observed gravity values.
 JU1171
 JU1171. The following values were computed from the NAD 83(2011) position.
 JU1171
 JU1171;                    North         East     Units Scale Factor Converg.
 JU1171;SPC MD       -   184,603.018   489,449.465   MT  0.99998053   +0 39 04.0
 JU1171;SPC MD       -   605,651.73  1,605,802.12   sFT  0.99998053   +0 39 04.0
 JU1171;UTM  18      - 4,353,293.732   417,028.323   MT  0.99968476   -0 36 36.2
 JU1171
 JU1171!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU1171!SPC MD       -   1.00000163  x   0.99998053  =   0.99998216
 JU1171!UTM  18      -   1.00000163  x   0.99968476  =   0.99968639
 JU1171
 JU1171_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1702853293(NAD 83)
 JU1171
 JU1171                          SUPERSEDED SURVEY CONTROL
 JU1171
 JU1171  NGVD 29 (11/26/84)   23.240  (m)           76.25   (f) ADJUSTED    1 2
 JU1171
 JU1171.Superseded values are not recommended for survey control.
 JU1171
 JU1171.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1171.See file dsdata.pdf to determine how the superseded data were derived.
 JU1171
 JU1171_MARKER: DB = BENCH MARK DISK
 JU1171_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JU1171_STAMPING: H 114 1971
 JU1171_MARK LOGO: CGS
 JU1171_PROJECTION: FLUSH
 JU1171_MAGNETIC: I = MARKER IS A STEEL ROD
 JU1171_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1171_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1171+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2025
 JU1171
 JU1171  HISTORY     - Date     Condition        Report By
 JU1171  HISTORY     - 1971     MONUMENTED       NGS
 JU1171  HISTORY     - 19881129 GOOD             USPSQD
 JU1171  HISTORY     - 20050101 GOOD             USPSQD
 JU1171  HISTORY     - 20070204 GOOD             USPSQD
 JU1171  HISTORY     - 20130503 GOOD             ARCSHE
 JU1171  HISTORY     - 20220203 GOOD             MDSHA
 JU1171  HISTORY     - 20250821 GOOD             PROFLN
 JU1171
 JU1171                          STATION DESCRIPTION
 JU1171
 JU1171'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1171'4.9 MI W FROM GALENA.
 JU1171'ABOUT 4.9 MILES WEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1171'INTERSECTION OF STATE HIGHWAYS 290 AND 313 AT GALENA, ABOUT 0.85
 JU1171'MILE NORTH OF THE JUNCTION OF STATE HIGHWAY 298, AT THE JUNCTION
 JU1171'OF A ROAD THAT LEADS NORTHWEST TO SHREWSBURY CHURCH, 52 1/2 FEET
 JU1171'NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 25 1/2 FEET NORTHEAST
 JU1171'OF THE CENTER LINE OF THE ROAD, 23 1/2 FEET NORTHWEST OF
 JU1171'TELEPHONE POLE NUMBER 758, 4.6 FEET NORTHEAST OF THE EAST CORNER
 JU1171'OF A BRICK POST WITH THE LETTERS SHREWSBURY CHURCH 1692 INSCRIBED
 JU1171'ON THE SOUTHEAST SIDE, 1 FOOT SOUTHEAST OF A WOODEN FENCE, 1.4
 JU1171'FEET WEST OF A METAL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY,
 JU1171'AND ON THE TOP OF A COPPER COATED ROD WHICH IS LEVEL WITH THE
 JU1171'GROUND AND IS ENCASED IN A 6-INCH METAL PIPE THAT PROJECTS 1 INCH.
 JU1171'THE ROD WAS DRIVEN TO A DEPTH OF 56 FEET.
 JU1171
 JU1171                          STATION RECOVERY (1988)
 JU1171
 JU1171'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1171'RECOVERED IN GOOD CONDITION.
 JU1171
 JU1171                          STATION RECOVERY (2005)
 JU1171
 JU1171'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 JU1171'REFERENCED WOODEN FENCE DOES NOT EXIST.  CORRECT NUMBER FOR REFERENCED
 JU1171'TELEPHONE POLE IS 757.
 JU1171
 JU1171                          STATION RECOVERY (2007)
 JU1171
 JU1171'RECOVERY NOTE BY US POWER SQUADRON 2007 (JKW)
 JU1171'RECOVERED IN GOOD CONDITION.
 JU1171
 JU1171                          STATION RECOVERY (2013)
 JU1171
 JU1171'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU1171'RECOVERED IN GOOD CONDITION.
 JU1171
 JU1171                          STATION RECOVERY (2022)
 JU1171
 JU1171'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 JU1171'THE MARK IS LOCATED ABOUT 9.8 MI (15.8 KM) NORTHEAST OF CHESTERTOWN,
 JU1171'4.6 MI (7.4 KM) WEST-SOUTHWEST OF GALENA, 4.4 MI (7.1 KM) EAST OF
 JU1171'STILL POND AND 2.2 MI (3.5 KM) NORTHEAST OF KENNEDYVILLE.
 JU1171'
 JU1171'TO REACH THE MARK FROM THE JUNCTION OF MD 298 AND MD 213, GO
 JU1171'EAST-NORTHEAST ON MD 213 FOR 0.86 MI (1.38 KM) TO AN INTERSECTION.
 JU1171'TURN LEFT AND GO NORTH-NORTHWEST ON SHREWSBURY CHURCH ROAD FOR 0.01 MI
 JU1171'(0.02 KM) TO THE MARK ON THE RIGHT.
 JU1171'
 JU1171'THE MARK IS 108.1 FT (32.9 M) SOUTH OF A UTILITY POLE NUMBERED
 JU1171'CHOPTANK 124-94-1, 53.6 FT (16.3 M) NORTHWEST OF THE CENTERLINE OF
 JU1171'STATE ROUTE MD 213, 24.5 FT (7.5 M) NORTHEAST OF THE CENTERLINE OF
 JU1171'SHREWSBURY CHURCH ROAD, 23.3 FT (7.1 M) NORTHEAST OF A UTILITY POLE
 JU1171'NUMBERED CHOPTANK 124-94 / VERIZON 757 AND ABOUT LEVEL WITH THE ROAD.
 JU1171
 JU1171                          STATION RECOVERY (2025)
 JU1171
 JU1171'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU1171'THE MARK IS NOW UNDER A 6 INCH (15 CM) DIAMETER VALVE BOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR8482 ***********************************************************************
 DR8482  DESIGNATION -  H 114 AZ MK
 DR8482  PID         -  DR8482
 DR8482  STATE/COUNTY-  MD/KENT
 DR8482  COUNTRY     -  US
 DR8482  USGS QUAD   -  GALENA (2017)
 DR8482
 DR8482                         *CURRENT SURVEY CONTROL
 DR8482  ______________________________________________________________________
 DR8482* NAD 83(2011) POSITION- 39 19 36.38083(N) 075 57 50.90647(W)   ADJUSTED
 DR8482* NAD 83(2011) ELLIP HT-   -11.378 (meters)        (09/18/23)   ADJUSTED
 DR8482* NAD 83(2011) EPOCH   -  2010.00
 DR8482* NAVD 88 ORTHO HEIGHT -    22.034 (meters)       72.29  (feet) ADJUSTED
 DR8482  ______________________________________________________________________
 DR8482  GEOID HEIGHT    -        -33.432 (meters)                     GEOID18
 DR8482  NAD 83(2011) X  -  1,198,192.781 (meters)                     COMP
 DR8482  NAD 83(2011) Y  - -4,792,907.698 (meters)                     COMP
 DR8482  NAD 83(2011) Z  -  4,020,437.717 (meters)                     COMP
 DR8482  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 DR8482  DYNAMIC HEIGHT  -         22.023 (meters)       72.25  (feet) COMP
 DR8482  MODELED GRAVITY -    980,114.0   (mgal)                       NAVD 88
 DR8482
 DR8482  VERT ORDER      -  FIRST     CLASS II
 DR8482
 DR8482  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR8482  Standards:
 DR8482         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR8482            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR8482  -------------------------------------------------------------------
 DR8482  NETWORK    0.49   1.22           0.22   0.18   0.62     -0.05565468
 DR8482  -------------------------------------------------------------------
 DR8482  Click here for local accuracies and other accuracy information.
 DR8482
 DR8482.The horizontal coordinates were established by GPS observations
 DR8482.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR8482
 DR8482.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR8482.been affixed to the stable North American tectonic plate. See 
 DR8482.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR8482
 DR8482.The horizontal coordinates are valid at the epoch date displayed above
 DR8482.which is a decimal equivalence of Year/Month/Day.
 DR8482
 DR8482.The orthometric height was determined by differential leveling and
 DR8482.adjusted by the NATIONAL GEODETIC SURVEY
 DR8482.in January 2023.
 DR8482
 DR8482.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR8482.GEOID18 height accuracy estimate available here.
 DR8482
 DR8482.Click photographs - Photos may exist for this station.
 DR8482
 DR8482.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR8482
 DR8482.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR8482
 DR8482.The ellipsoidal height was determined by GPS observations
 DR8482.and is referenced to NAD 83.
 DR8482
 DR8482.The dynamic height is computed by dividing the NAVD 88
 DR8482.geopotential number by the normal gravity value computed on the
 DR8482.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR8482.degrees latitude (g = 980.6199 gals.).
 DR8482
 DR8482.The modeled gravity was interpolated from observed gravity values.
 DR8482
 DR8482. The following values were computed from the NAD 83(2011) position.
 DR8482
 DR8482;                    North         East     Units Scale Factor Converg.
 DR8482;SPC MD       -   184,789.452   489,314.928   MT  0.99998077   +0 39 00.5
 DR8482;SPC MD       -   606,263.39  1,605,360.73   sFT  0.99998077   +0 39 00.5
 DR8482;UTM  18      - 4,353,483.027   416,897.960   MT  0.99968503   -0 36 39.8
 DR8482
 DR8482!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR8482!SPC MD       -   1.00000179  x   0.99998077  =   0.99998256
 DR8482!UTM  18      -   1.00000179  x   0.99968503  =   0.99968681
 DR8482
 DR8482_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1689753483(NAD 83)
 DR8482
 DR8482                          SUPERSEDED SURVEY CONTROL
 DR8482
 DR8482.No superseded survey control is available for this station.
 DR8482
 DR8482_MARKER: DD = SURVEY DISK
 DR8482_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR8482_STAMPING: H 114 AZ 2021
 DR8482_MARK LOGO: MD-029
 DR8482_PROJECTION: FLUSH
 DR8482_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR8482_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR8482+STABILITY: SURFACE MOTION
 DR8482_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR8482+SATELLITE: SATELLITE OBSERVATIONS - September 14, 2022
 DR8482
 DR8482  HISTORY     - Date     Condition        Report By
 DR8482  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR8482  HISTORY     - 20220714 GOOD             MDSHA
 DR8482  HISTORY     - 20220914 GOOD             MDSHA
 DR8482
 DR8482                          STATION DESCRIPTION
 DR8482
 DR8482'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 DR8482'RECOVERED IN GOOD CONDITION.
 DR8482
 DR8482                          STATION RECOVERY (2022)
 DR8482
 DR8482'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 DR8482'THE MARK IS LOCATED ABOUT 9.8 MI (15.8 KM) NORTHEAST OF CHESTERTOWN,
 DR8482'4.7 MI (7.6 KM) WEST-SOUTHWEST OF GALENA, 4.3 MI (6.9 KM) EAST OF
 DR8482'STILL POND AND 2.2 MI (3.5 KM) NORTHEAST OF KENNEDYVILLE.
 DR8482'
 DR8482'TO REACH THE MARK FROM THE JUNCTION OF MD 298 AND MD 213, GO
 DR8482'EAST-NORTHEAST ON MD 213 FOR 0.86 MI (1.38 KM) TO AN INTERSECTION.
 DR8482'TURN LEFT AND GO NORTH-NORTHWEST ON SHREWSBURY CHURCH ROAD FOR 0.16 MI
 DR8482'(0.26 KM) TO THE MARK ON THE RIGHT, SET IN THE TOP OF A 12-IN (30 CM)
 DR8482'ROUND CONCRETE POST AND ABOUT 2 FT (0.6 M) HIGHER THAN THE ROAD.
 DR8482'
 DR8482'THE MARK IS 149.2 FT (45.5 M) NORTH-NORTHWEST OF THE SOUTHWEST END OF
 DR8482'A 15 INCH (38 CM) CORRUGATED METAL PIPE, 147.6 FT (45.0 M)
 DR8482'NORTH-NORTHWEST OF THE NORTHEAST END OF A 15 INCH (38 CM) CORRUGATED
 DR8482'METAL PIPE, 69.4 FT (21.2 M) SOUTH OF A UTILITY POLE NUMBERED
 DR8482'124-94-3, 19.3 FT (5.9 M) NORTHEAST OF THE CENTERLINE OF SHREWSBURY
 DR8482'CHURCH ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0271 ***********************************************************************
 JV0271  DESIGNATION -  H 115
 JV0271  PID         -  JV0271
 JV0271  STATE/COUNTY-  MD/KENT
 JV0271  COUNTRY     -  US
 JV0271  USGS QUAD   -  BETTERTON (2017)
 JV0271
 JV0271                         *CURRENT SURVEY CONTROL
 JV0271  ______________________________________________________________________
 JV0271* NAD 83(1986) POSITION- 39 15 45.     (N) 076 05 13.     (W)   SCALED
 JV0271* NAVD 88 ORTHO HEIGHT -    21.538 (meters)       70.66  (feet) ADJUSTED
 JV0271  ______________________________________________________________________
 JV0271  GEOID HEIGHT    -        -33.358 (meters)                     GEOID18
 JV0271  DYNAMIC HEIGHT  -         21.527 (meters)       70.63  (feet) COMP
 JV0271  MODELED GRAVITY -    980,110.5   (mgal)                       NAVD 88
 JV0271
 JV0271  VERT ORDER      -  FIRST     CLASS II
 JV0271
 JV0271.The horizontal coordinates were scaled from a map and have
 JV0271.an estimated accuracy of +/- 6 seconds.
 JV0271
 JV0271.The orthometric height was determined by differential leveling and
 JV0271.adjusted by the NATIONAL GEODETIC SURVEY
 JV0271.in June 1991.
 JV0271
 JV0271.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0271.GEOID18 height accuracy estimate available here.
 JV0271
 JV0271.Click photographs - Photos may exist for this station.
 JV0271
 JV0271.The dynamic height is computed by dividing the NAVD 88
 JV0271.geopotential number by the normal gravity value computed on the
 JV0271.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0271.degrees latitude (g = 980.6199 gals.).
 JV0271
 JV0271.The modeled gravity was interpolated from observed gravity values.
 JV0271
 JV0271;                    North         East    Units  Estimated Accuracy
 JV0271;SPC MD       -   177,540.      478,800.      MT  (+/- 180 meters Scaled)
 JV0271
 JV0271_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ062464(NAD 83)
 JV0271
 JV0271                          SUPERSEDED SURVEY CONTROL
 JV0271
 JV0271  NGVD 29 (11/26/84)   21.779  (m)           71.45   (f) ADJUSTED    1 2
 JV0271
 JV0271.Superseded values are not recommended for survey control.
 JV0271
 JV0271.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0271.See file dsdata.pdf to determine how the superseded data were derived.
 JV0271
 JV0271_MARKER: DB = BENCH MARK DISK
 JV0271_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0271_SP_SET: BUILDING
 JV0271_STAMPING: H 115 1971
 JV0271_MARK LOGO: CGS
 JV0271_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0271
 JV0271  HISTORY     - Date     Condition        Report By
 JV0271  HISTORY     - 1971     MONUMENTED       NGS
 JV0271  HISTORY     - 1990     GOOD             USPSQD
 JV0271  HISTORY     - 20011228 MARK NOT FOUND   USPSQD
 JV0271  HISTORY     - 20250415 MARK NOT FOUND   PROFLN
 JV0271
 JV0271                          STATION DESCRIPTION
 JV0271
 JV0271'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0271'0.8 MI SE FROM WORTON.
 JV0271'ABOUT 0.75 MILE SOUTH ALONG STATE HIGHWAY 297 FROM THE WORTON
 JV0271'METHODIST CHURCH AT WORTON, 0.9 MILE NORTHWEST OF THE JUNCTION OF
 JV0271'MORRIS ROAD LEADING WESTERLY, SET VERTICALLY IN THE EAST BRICK
 JV0271'FACE AND 2.8 FEET SOUTH OF THE NORTHEAST CORNER OF THE BUILDING
 JV0271'OF THE TENNECO CHEMICALS INC, (OFFICE BUILDING), 94.4 FEET
 JV0271'WEST OF THE CENTER LINE OF THE HIGHWAY, AND 2.8 FEET ABOVE THE
 JV0271'LEVEL OF THE GROUND.
 JV0271
 JV0271                          STATION RECOVERY (1990)
 JV0271
 JV0271'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0271'RECOVERED IN GOOD CONDITION.
 JV0271
 JV0271                          STATION RECOVERY (2001)
 JV0271
 JV0271'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0271'MARK NOT FOUND.
 JV0271
 JV0271                          STATION RECOVERY (2025)
 JV0271
 JV0271'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0271'SEARCHED FOR, NOT FOUND, STUCCOED OVER.  WHAT WAS TENNECO IS NOW
 JV0271'EASTMAN CO.  UNFORTUNATE AVOIDABLE LOSS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1870 ***********************************************************************
 JU1870  DESIGNATION -  H 118
 JU1870  PID         -  JU1870
 JU1870  STATE/COUNTY-  MD/CECIL
 JU1870  COUNTRY     -  US
 JU1870  USGS QUAD   -  NORTH EAST (2016)
 JU1870
 JU1870                         *CURRENT SURVEY CONTROL
 JU1870  ______________________________________________________________________
 JU1870* NAD 83(1986) POSITION- 39 36 37.30   (N) 075 54 05.89   (W)   HD_HELD1
 JU1870* NAVD 88 ORTHO HEIGHT -    45.664 (meters)      149.82  (feet) ADJUSTED
 JU1870  ______________________________________________________________________
 JU1870  GEOID HEIGHT    -        -33.153 (meters)                     GEOID18
 JU1870  DYNAMIC HEIGHT  -         45.641 (meters)      149.74  (feet) COMP
 JU1870  MODELED GRAVITY -    980,134.5   (mgal)                       NAVD 88
 JU1870
 JU1870  VERT ORDER      -  FIRST     CLASS II
 JU1870
 JU1870.The horizontal coordinates were determined by differentially corrected
 JU1870.hand held GPS observations or other comparable positioning techniques
 JU1870.and have an estimated accuracy of +/- 3 meters.
 JU1870
 JU1870.The orthometric height was determined by differential leveling and
 JU1870.adjusted by the NATIONAL GEODETIC SURVEY
 JU1870.in July 2019.
 JU1870
 JU1870.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1870.GEOID18 height accuracy estimate available here.
 JU1870
 JU1870.Click photographs - Photos may exist for this station.
 JU1870
 JU1870.The dynamic height is computed by dividing the NAVD 88
 JU1870.geopotential number by the normal gravity value computed on the
 JU1870.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1870.degrees latitude (g = 980.6199 gals.).
 JU1870
 JU1870.The modeled gravity was interpolated from observed gravity values.
 JU1870
 JU1870;                    North         East    Units  Estimated Accuracy
 JU1870;SPC MD       -   216,335.6     494,325.2     MT  (+/- 3 meters HH1 GPS) 
 JU1870
 JU1870_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2260084900(NAD 83)
 JU1870
 JU1870                          SUPERSEDED SURVEY CONTROL
 JU1870
 JU1870  NAVD 88 (06/15/91)   45.672  (m)          149.84   (f) SUPERSEDED  1 1
 JU1870  NGVD 29 (11/26/84)   45.907  (m)          150.61   (f) ADJUSTED    1 1
 JU1870
 JU1870.Superseded values are not recommended for survey control.
 JU1870
 JU1870.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1870.See file dsdata.pdf to determine how the superseded data were derived.
 JU1870
 JU1870_MARKER: DB = BENCH MARK DISK
 JU1870_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JU1870+WITH SETTING: INTO GROUND
 JU1870_STAMPING: H 118 1971
 JU1870_MARK LOGO: CGS
 JU1870_PROJECTION: PROJECTING 10 CENTIMETERS
 JU1870_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1870+STABILITY: SURFACE MOTION
 JU1870_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1870+SATELLITE: SATELLITE OBSERVATIONS - August 20, 2014
 JU1870
 JU1870  HISTORY     - Date     Condition        Report By
 JU1870  HISTORY     - 1971     MONUMENTED       NGS
 JU1870  HISTORY     - 1982     GOOD             LOCSUR
 JU1870  HISTORY     - 19910216 GOOD             USPSQD
 JU1870  HISTORY     - 20040313 GOOD             GEOCAC
 JU1870  HISTORY     - 20070718 GOOD             UE
 JU1870  HISTORY     - 20140820 GOOD             JARICE
 JU1870
 JU1870                          STATION DESCRIPTION
 JU1870
 JU1870'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1870'4 MI W FROM ELKTON.
 JU1870'ABOUT 4.05 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE JUNCTION OF
 JU1870'U.S. HIGHWAY 213 AT ELKTON, ABOUT 0.2 MILE WEST OF A LARGE
 JU1870'Y.M.C.A. BUILDING, NEAR THE JUNCTION OF A GRAVELED ROAD THAT
 JU1870'LEADS NORTH, 46 FEET NORTH OF THE CENTER LINE OF THE NORTH LANES
 JU1870'OF THE HIGHWAY, 157 FEET EAST OF THE CENTER LINE OF THE ROAD,
 JU1870'2 1/2 FEET WEST OF POWER POLE NUMBER 13424, 2 1/2 FEET EAST OF A
 JU1870'METAL WITNESS POST, ABOUT 1 1/2 FEET BELOW THE LEVEL OF THE
 JU1870'HIGHWAY, AND ON THE TOP OF A 4-FOOT SECTION OF COPPER COATED
 JU1870'ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK PROJECTS
 JU1870'1 INCH AND IS PROTECTED BY A 5-INCH METAL PIPE THAT PROJECTS 2
 JU1870'INCHES.
 JU1870
 JU1870                          STATION RECOVERY (1982)
 JU1870
 JU1870'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
 JU1870'THERE IS NO METAL PIPE PROTECTING IT. IT IS ABOUT FOUR INCHES ABOVE
 JU1870'GROUND GASTENED TO A SPIKE.
 JU1870
 JU1870                          STATION RECOVERY (1991)
 JU1870
 JU1870'RECOVERY NOTE BY US POWER SQUADRON 1991 (BJD)
 JU1870'RECOVERED IN GOOD CONDITION.
 JU1870
 JU1870                          STATION RECOVERY (2004)
 JU1870
 JU1870'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JU1870'FOUND GENERALLY AS DESCRIBED. THE GRAVEL ROAD MENTIONED IN THE 1971
 JU1870'DESCRIPTION IS HAMILTON LANE. THE POWER POLE IS NOW MORE PROMINENTLY
 JU1870'NUMBERED 38663 38539. A METAL WITNESS POST IS NO LONGER IN PLACE. MARK
 JU1870'IS ABOUT 1 FOOT SOUTH OF A CARSONITE WITNESS POST. STATION DISK IS NO
 JU1870'LONGER PROTECTED BY A METAL PIPE. THE MARK IS APPROXIMATELY ACROSS THE
 JU1870'HIGHWAY FROM ROGERS LANDSCAPE SUPPLIES.
 JU1870
 JU1870                          STATION RECOVERY (2007)
 JU1870
 JU1870'RECOVERY NOTE BY URBAN ENGINEERS INC 2007 (WBF)
 JU1870'RECOVERED IN GOOD CONDITION.
 JU1870
 JU1870                          STATION RECOVERY (2014)
 JU1870
 JU1870'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JU1870'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0628 ***********************************************************************
 HU0628  DESIGNATION -  H 119
 HU0628  PID         -  HU0628
 HU0628  STATE/COUNTY-  MD/WICOMICO
 HU0628  COUNTRY     -  US
 HU0628  USGS QUAD   -  HEBRON (2016)
 HU0628
 HU0628                         *CURRENT SURVEY CONTROL
 HU0628  ______________________________________________________________________
 HU0628* NAD 83(1986) POSITION- 38 26 19.     (N) 075 41 10.     (W)   SCALED
 HU0628* NAVD 88 ORTHO HEIGHT -    13.187 (meters)       43.26  (feet) ADJUSTED
 HU0628  ______________________________________________________________________
 HU0628  GEOID HEIGHT    -        -35.668 (meters)                     GEOID18
 HU0628  DYNAMIC HEIGHT  -         13.179 (meters)       43.24  (feet) COMP
 HU0628  MODELED GRAVITY -    980,012.4   (mgal)                       NAVD 88
 HU0628
 HU0628  VERT ORDER      -  FIRST     CLASS II
 HU0628
 HU0628.The horizontal coordinates were scaled from a map and have
 HU0628.an estimated accuracy of +/- 6 seconds.
 HU0628
 HU0628.The orthometric height was determined by differential leveling and
 HU0628.adjusted by the NATIONAL GEODETIC SURVEY
 HU0628.in June 1991.
 HU0628
 HU0628.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0628.GEOID18 height accuracy estimate available here.
 HU0628
 HU0628.Click photographs - Photos may exist for this station.
 HU0628
 HU0628.The dynamic height is computed by dividing the NAVD 88
 HU0628.geopotential number by the normal gravity value computed on the
 HU0628.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0628.degrees latitude (g = 980.6199 gals.).
 HU0628
 HU0628.The modeled gravity was interpolated from observed gravity values.
 HU0628
 HU0628;                    North         East    Units  Estimated Accuracy
 HU0628;SPC MD       -    86,510.      514,710.      MT  (+/- 180 meters Scaled)
 HU0628
 HU0628_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH401547(NAD 83)
 HU0628
 HU0628                          SUPERSEDED SURVEY CONTROL
 HU0628
 HU0628  NGVD 29 (11/26/84)   13.432  (m)           44.07   (f) ADJUSTED    1 2
 HU0628
 HU0628.Superseded values are not recommended for survey control.
 HU0628
 HU0628.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0628.See file dsdata.pdf to determine how the superseded data were derived.
 HU0628
 HU0628_MARKER: DB = BENCH MARK DISK
 HU0628_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU0628+WITH SETTING: INTO GROUND
 HU0628_STAMPING: H 119 1971
 HU0628_MARK LOGO: CGS
 HU0628_PROJECTION: RECESSED 15 CENTIMETERS
 HU0628_MAGNETIC: I = MARKER IS A STEEL ROD
 HU0628_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0628+STABILITY: SURFACE MOTION
 HU0628_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0628+SATELLITE: SATELLITE OBSERVATIONS - August 03, 2021
 HU0628
 HU0628  HISTORY     - Date     Condition        Report By
 HU0628  HISTORY     - 1971     MONUMENTED       NGS
 HU0628  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0628  HISTORY     - 20010502 GOOD             MDSHA
 HU0628  HISTORY     - 20050312 GOOD             USPSQD
 HU0628  HISTORY     - 20210803 GOOD             BASE9
 HU0628
 HU0628                          STATION DESCRIPTION
 HU0628
 HU0628'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0628'2.2 MI NW FROM HEBRON.
 HU0628'ABOUT 1.2 MILES NORTHEAST ALONG STATE HIGHWAY 347 FROM THE POST
 HU0628'OFFICE AT HEBRON, THENCE 0.95 MILE NORTHWEST ALONG U.S. HIGHWAY 50,
 HU0628'135 FEET NORTHWEST OF THE NORTHWEST CORNER OF A MOTEL AND LOUNGE,
 HU0628'(CONCRETE BLOCK BUILDING), 64 FEET NORTHEAST OF THE NORTHEAST LANE
 HU0628'OF THE HIGHWAY, 53 1/2 FEET NORTHWEST OF A LIGHT POLE WITH LIGHT,
 HU0628'12.2 FEET NORTHEAST OF AN UNDERGROUND TELEPHONE CABLE MARKER NO.
 HU0628'1217, 3 1/2 FEET SOUTHWEST OF THE BASE OF A GUY WIRE, 16.2
 HU0628'FEET NORTHEAST OF A METAL WITNESS POST, 3 FEET ABOVE THE LEVEL OF
 HU0628'THE HIGHWAY, ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT
 HU0628'IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS 2 INCHES BELOW
 HU0628'THE LEVEL OF THE GROUND AND ENCASED IN A 5 INCH IRON PIPE THAT IS
 HU0628'1 INCH BELOW THE GROUND.
 HU0628
 HU0628                          STATION RECOVERY (1997)
 HU0628
 HU0628'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0628'MARK NOT FOUND.
 HU0628
 HU0628                          STATION RECOVERY (2001)
 HU0628
 HU0628'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU0628'RECOVERED AS DESCRIBED.  THE MOTEL IS NOW GUNNERS AUTO SALES.
 HU0628
 HU0628                          STATION RECOVERY (2005)
 HU0628
 HU0628'RECOVERY NOTE BY US POWER SQUADRON 2005 (JKW)
 HU0628'REFERENCED AUTO SALES COMPANY OUT-OF-BUSINESS.  METAL WITNESS POST
 HU0628'REPLACED BY CARSONITE.
 HU0628
 HU0628                          STATION RECOVERY (2021)
 HU0628
 HU0628'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2021 (DRD)
 HU0628'THE PREVIOUSLY DESCRIBED AUTO SALES COMPANY HAS BEEN REPLACED BY A
 HU0628'SERVEPRO OFFICE AND THE CARSONITE WITNESS POST MENTIONED IN 2005 HAS
 HU0628'BEEN REMOVED AND IS LYING ON THE SIDE.  MARK IS NOW RECESSED 0.15 M
 HU0628'(0.5 FT) AND IS 16.21 M (53.2 FT) SOUTHWEST OF THE NORTH CORNER OF A
 HU0628'CONCRETE BLOCK BUILDING, 3.89 M (12.8 FT) NORTH OF THE CENTER OF THE
 HU0628'SQUARE TELEPHONE CABLE MARKER NO 1217 AND 3.68 M (12.1 FT) NORTHWEST
 HU0628'OF A METAL FLAGPOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1861 ***********************************************************************
 JV1861  DESIGNATION -  H 12
 JV1861  PID         -  JV1861
 JV1861  STATE/COUNTY-  MD/CARROLL
 JV1861  COUNTRY     -  US
 JV1861  USGS QUAD   -  UNION BRIDGE (2016)
 JV1861
 JV1861                         *CURRENT SURVEY CONTROL
 JV1861  ______________________________________________________________________
 JV1861* NAD 83(1986) POSITION- 39 35 34.9    (N) 077 14 14.5    (W)   HD_HELD2
 JV1861* NAVD 88 ORTHO HEIGHT -   126.676 (meters)      415.60  (feet) ADJUSTED
 JV1861  ______________________________________________________________________
 JV1861  GEOID HEIGHT    -        -32.855 (meters)                     GEOID18
 JV1861  DYNAMIC HEIGHT  -        126.609 (meters)      415.38  (feet) COMP
 JV1861  MODELED GRAVITY -    980,089.0   (mgal)                       NAVD 88
 JV1861
 JV1861  VERT ORDER      -  SECOND    CLASS I
 JV1861
 JV1861.The horizontal coordinates were established by autonomous hand held GPS
 JV1861.observations and have an estimated accuracy of +/- 10 meters.
 JV1861
 JV1861.The orthometric height was determined by differential leveling and
 JV1861.adjusted by the NATIONAL GEODETIC SURVEY
 JV1861.in June 1991.
 JV1861
 JV1861.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1861.GEOID18 height accuracy estimate available here.
 JV1861
 JV1861.Click photographs - Photos may exist for this station.
 JV1861
 JV1861.The dynamic height is computed by dividing the NAVD 88
 JV1861.geopotential number by the normal gravity value computed on the
 JV1861.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1861.degrees latitude (g = 980.6199 gals.).
 JV1861
 JV1861.The modeled gravity was interpolated from observed gravity values.
 JV1861
 JV1861;                    North         East    Units  Estimated Accuracy
 JV1861;SPC MD       -   213,870.      379,610.      MT  (+/- 10 meters HH2 GPS)
 JV1861
 JV1861_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0788184980(NAD 83)
 JV1861
 JV1861                          SUPERSEDED SURVEY CONTROL
 JV1861
 JV1861  NGVD 29 (11/26/84)  126.884  (m)          416.29   (f) ADJUSTED    2 0
 JV1861
 JV1861.Superseded values are not recommended for survey control.
 JV1861
 JV1861.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1861.See file dsdata.pdf to determine how the superseded data were derived.
 JV1861
 JV1861_MARKER: DB = BENCH MARK DISK
 JV1861_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV1861+WITH SETTING: PAVEMENT
 JV1861_SP_SET: WATER TOWER BASE
 JV1861_STAMPING: H 12 1935
 JV1861_MARK LOGO: CGS
 JV1861_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV1861_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1861+STABILITY: SURFACE MOTION
 JV1861_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1861+SATELLITE: SATELLITE OBSERVATIONS - June 14, 2001
 JV1861
 JV1861  HISTORY     - Date     Condition        Report By
 JV1861  HISTORY     - 1935     MONUMENTED       CGS
 JV1861  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV1861  HISTORY     - 20010614 GOOD             MDSHA
 JV1861  HISTORY     - 20030420 GOOD             GEOCAC
 JV1861
 JV1861                          STATION DESCRIPTION
 JV1861
 JV1861'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1861'0.5 MI S FROM KEYMAR.
 JV1861'ABOUT 0.5 MILE SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE
 JV1861'WESTERN MARYLAND RAILWAY STATION AT KEYMAR, CARROLL COUNTY, AT A
 JV1861'WATER TOWER, IN THE TOP OF THE SOUTH END OF THE WEST CONCRETE
 JV1861'ABUTMENT, AND 27 FEET EAST OF THE CENTER LINE OF THE TRACK.  A
 JV1861'STANDARD DISK, STAMPED H 12 1935.
 JV1861
 JV1861                          STATION RECOVERY (1953)
 JV1861
 JV1861'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JV1861'MARK NOT FOUND.
 JV1861
 JV1861                          STATION RECOVERY (2001)
 JV1861
 JV1861'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1861'THE STATION IS LOCATED 0.5 MILES (0.8 KM) SOUTH ALONG THE PENNSYLVANIA
 JV1861'RAILROAD FROM THE WESTERN MARYLAND RAILROAD STATION IN KEYMAR, IN THE
 JV1861'TOP OF THE SOUTH END OF A CONCRETE ABUTMENT FOR A WATER TOWER WHICH
 JV1861'HAS BEEN REMOVED.  THE STATION IS ALSO 318 PACES SOUTHWEST OF THE
 JV1861'PENNSYLVANIA RAILROAD BRIDGE OVER Y ROAD.  IT IS 26.5 FEET (8.1 M)
 JV1861'SOUTHEAST OF THE CENTER OF THE TRACKS, 40.0 FEET (12.2 M) SOUTH OF THE
 JV1861'SOUTHEAST CORNER OF A CONCRETE FOUNDATION LOCATED EAST OF THE TRACKS,
 JV1861'1.3 FEET (0.4 M) NORTHWEST OF A CARSONITE WITNESS POST.
 JV1861
 JV1861                          STATION RECOVERY (2003)
 JV1861
 JV1861'RECOVERY NOTE BY GEOCACHING 2003 (MHB)
 JV1861'WATER TOWER STRUCTURE IS GONE, BUT DISK REMAINS IN CONCRETE
 JV1861'FOUNDATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6005 ***********************************************************************
 DN6005  DESIGNATION -  H 12
 DN6005  PID         -  DN6005
 DN6005  STATE/COUNTY-  MD/CARROLL
 DN6005  COUNTRY     -  US
 DN6005  USGS QUAD   -  WESTMINSTER (2016)
 DN6005
 DN6005                         *CURRENT SURVEY CONTROL
 DN6005  ______________________________________________________________________
 DN6005* NAD 83(1986) POSITION- 39 35 56.4    (N) 076 56 13.0    (W)   HD_HELD2
 DN6005* NAVD 88 ORTHO HEIGHT -   275.414 (meters)      903.59  (feet) ADJUSTED
 DN6005  ______________________________________________________________________
 DN6005  GEOID HEIGHT    -        -32.212 (meters)                     GEOID18
 DN6005  DYNAMIC HEIGHT  -        275.273 (meters)      903.12  (feet) COMP
 DN6005  MODELED GRAVITY -    980,105.6   (mgal)                       NAVD 88
 DN6005
 DN6005  VERT ORDER      -  SECOND    CLASS II
 DN6005
 DN6005.The horizontal coordinates were established by autonomous hand held GPS
 DN6005.observations and have an estimated accuracy of +/- 10 meters.
 DN6005
 DN6005.The orthometric height was determined by differential leveling and
 DN6005.adjusted by the NATIONAL GEODETIC SURVEY
 DN6005.in June 2012.
 DN6005
 DN6005.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6005.GEOID18 height accuracy estimate available here.
 DN6005
 DN6005.Click photographs - Photos may exist for this station.
 DN6005
 DN6005.The dynamic height is computed by dividing the NAVD 88
 DN6005.geopotential number by the normal gravity value computed on the
 DN6005.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DN6005.degrees latitude (g = 980.6199 gals.).
 DN6005
 DN6005.The modeled gravity was interpolated from observed gravity values.
 DN6005
 DN6005;                    North         East    Units  Estimated Accuracy
 DN6005;SPC MD       -   214,509.      405,416.      MT  (+/- 10 meters HH2 GPS)
 DN6005
 DN6005_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3369385043(NAD 83)
 DN6005
 DN6005                          SUPERSEDED SURVEY CONTROL
 DN6005
 DN6005.No superseded survey control is available for this station.
 DN6005
 DN6005_MARKER: DD = SURVEY DISK
 DN6005_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 DN6005_SP_SET: HEADWALL
 DN6005_STAMPING: H-12 1982
 DN6005_MARK LOGO: MD-013
 DN6005_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6005+STABILITY: SURFACE MOTION
 DN6005_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6005+SATELLITE: SATELLITE OBSERVATIONS - May 31, 2014
 DN6005
 DN6005  HISTORY     - Date     Condition        Report By
 DN6005  HISTORY     - 1982     MONUMENTED       MD-013
 DN6005  HISTORY     - 20080131 GOOD             MDSHA
 DN6005  HISTORY     - 20140531 GOOD             RODCON
 DN6005
 DN6005                          STATION DESCRIPTION
 DN6005
 DN6005'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 DN6005'THE MARK IS LOCATED ABOUT 5.1 MI (8.2 KM) SOUTH-SOUTHWEST OF
 DN6005'MANCHESTER, 4.7 MI (7.6 KM) WEST OF HAMPSTEAD AND 3.5 MI (5.6 KM)
 DN6005'EAST-NORTHEAST OF WESTMINSTER.
 DN6005'
 DN6005'TO REACH THE MARK FROM THE RAILROAD TRACKS AT THE INTERSECTION OF MAIN
 DN6005'STREET AND MARYLAND ROUTE 27 IN WESTMINSTER, GO NORTHEAST ON MARYLAND
 DN6005'ROUTE 27 FOR 3.2 MI (5.1 KM) TO MARYLAND ROUTE 482.  TURN RIGHT AND GO
 DN6005'NORTHEAST ON MARYLAND ROUTE 482 FOR 0.55 MI (0.9 KM) TO LEISTERS
 DN6005'CHURCH ROAD AND THE MARK ON THE RIGHT.
 DN6005'
 DN6005'IT IS 23.7 FT (7.2 M) SOUTH OF C AND P POLE 130, 55.3 FT (16.9 M)
 DN6005'SOUTHEAST OF THE CENTERLINE OF MARYLAND ROUTE 482, 51.7 FT (15.8 M)
 DN6005'NORTHEAST OF THE CENTERLINE OF LEISTERS CHURCH ROAD AND 3.0 FT (0.9 M)
 DN6005'NORTHEAST OF A CARSONITE WITNESS POST.
 DN6005
 DN6005                          STATION RECOVERY (2014)
 DN6005
 DN6005'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 DN6005'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0234 ***********************************************************************
 HV0234  DESIGNATION -  H 120
 HV0234  PID         -  HV0234
 HV0234  STATE/COUNTY-  MD/DORCHESTER
 HV0234  COUNTRY     -  US
 HV0234  USGS QUAD   -  CAMBRIDGE (2016)
 HV0234
 HV0234                         *CURRENT SURVEY CONTROL
 HV0234  ______________________________________________________________________
 HV0234* NAD 83(1986) POSITION- 38 33 23.9    (N) 076 03 21.9    (W)   HD_HELD2
 HV0234* NAVD 88 ORTHO HEIGHT -     5.467 (meters)       17.94  (feet) ADJUSTED
 HV0234  ______________________________________________________________________
 HV0234  GEOID HEIGHT    -        -35.092 (meters)                     GEOID18
 HV0234  DYNAMIC HEIGHT  -          5.464 (meters)       17.93  (feet) COMP
 HV0234  MODELED GRAVITY -    980,016.4   (mgal)                       NAVD 88
 HV0234
 HV0234  VERT ORDER      -  FIRST     CLASS II
 HV0234
 HV0234.The horizontal coordinates were established by autonomous hand held GPS
 HV0234.observations and have an estimated accuracy of +/- 10 meters.
 HV0234
 HV0234.The orthometric height was determined by differential leveling and
 HV0234.adjusted by the NATIONAL GEODETIC SURVEY
 HV0234.in June 1991.
 HV0234
 HV0234.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0234.GEOID18 height accuracy estimate available here.
 HV0234
 HV0234.Click photographs - Photos may exist for this station.
 HV0234
 HV0234.The dynamic height is computed by dividing the NAVD 88
 HV0234.geopotential number by the normal gravity value computed on the
 HV0234.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0234.degrees latitude (g = 980.6199 gals.).
 HV0234
 HV0234.The modeled gravity was interpolated from observed gravity values.
 HV0234
 HV0234;                    North         East    Units  Estimated Accuracy
 HV0234;SPC MD       -    99,216.      482,272.      MT  (+/- 10 meters HH2 GPS)
 HV0234
 HV0234_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0798268106(NAD 83)
 HV0234
 HV0234                          SUPERSEDED SURVEY CONTROL
 HV0234
 HV0234  NGVD 29 (11/26/84)    5.702  (m)           18.71   (f) ADJUSTED    1 2
 HV0234
 HV0234.Superseded values are not recommended for survey control.
 HV0234
 HV0234.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0234.See file dsdata.pdf to determine how the superseded data were derived.
 HV0234
 HV0234_MARKER: DB = BENCH MARK DISK
 HV0234_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0234+WITH SETTING: INTO GROUND
 HV0234_STAMPING: H 120 1971
 HV0234_MARK LOGO: CGS
 HV0234_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0234+STABILITY: SURFACE MOTION
 HV0234_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0234+SATELLITE: SATELLITE OBSERVATIONS - November 17, 2006
 HV0234
 HV0234  HISTORY     - Date     Condition        Report By
 HV0234  HISTORY     - 1971     MONUMENTED       NGS
 HV0234  HISTORY     - 20010331 GOOD             NGS
 HV0234  HISTORY     - 20051109 GOOD             USPSQD
 HV0234  HISTORY     - 20061117 GOOD             USPSQD
 HV0234
 HV0234                          STATION DESCRIPTION
 HV0234
 HV0234'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0234'1.3 MI SE FROM CAMBRIDGE.
 HV0234'ABOUT 1.3 MILES SOUTHEAST ALONG U.S. HIGHWAY 50 FROM THE SOUTH
 HV0234'END OF THE HIGHWAY BRIDGE OVER THE CHOPTANK RIVER AT CAMBRIDGE,
 HV0234'67 FEET NORTHEAST OF THE CENTER LINE OF THE NORTHEAST LANES
 HV0234'OF THE HIGHWAY, 79.0 FEET SOUTHEAST OF THE CENTER LINE OF THE
 HV0234'MAIN ENTRANCE TO THE EASTERN SHORE STATE HOSPITAL, 53 1/2
 HV0234'FEET NORTHWEST OF TELEPHONE POLE NUMBER 390, 26 1/2 FEET EAST OF
 HV0234'UNDERGROUND TELEPHONE CABLE MARKER NUMBER 1, 7.0 FEET NORTHEAST
 HV0234'OF THE SOUTHWEST END OF A 3-FOOT HIGH BRICK WALL, 1.3 FEET SOUTHEAST
 HV0234'OF THE WALL, ABOUT 2 FEET ABOVE THE LEVEL OF THE HIGHWAY, AND
 HV0234'ON THE TOP OF A 4-FOOT SECTION OF COPPER COATED ROD THAT IS
 HV0234'ATTACHED TO A METAL BASE PLATE.  THE DISK IS 5 INCHES BELOW THE
 HV0234'SURFACE OF THE GROUND AND IS PROTECTED BY A 4-INCH ORANGEBURG
 HV0234'PIPE THAT IS 3 INCHES BELOW THE SURFACE OF THE GROUND.
 HV0234
 HV0234                          STATION RECOVERY (2001)
 HV0234
 HV0234'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0234'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0234
 HV0234                          STATION RECOVERY (2005)
 HV0234
 HV0234'RECOVERY NOTE BY US POWER SQUADRON 2005 (CPS)
 HV0234'THERE IS NO LONGER A STATE HOSPITAL AT THE SITE.  THE PROPERTY BELONGS
 HV0234'TO HYATT REGENCY, CHESAPEAKE BAY RESORT.  THE GPS READING WAS 2
 HV0234'SECONDS OFF.  IT WAS 11 INCHES DEEP.THERE IS A WITNESS POST AT THE
 HV0234'SITE.
 HV0234
 HV0234                          STATION RECOVERY (2006)
 HV0234
 HV0234'RECOVERY NOTE BY US POWER SQUADRON 2006 (NLH)
 HV0234'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0602 ***********************************************************************
 JV0602  DESIGNATION -  H 121
 JV0602  PID         -  JV0602
 JV0602  STATE/COUNTY-  MD/BALTIMORE
 JV0602  COUNTRY     -  US
 JV0602  USGS QUAD   -  RELAY (2016)
 JV0602
 JV0602                         *CURRENT SURVEY CONTROL
 JV0602  ______________________________________________________________________
 JV0602* NAD 83(1986) POSITION- 39 13 49.     (N) 076 38 29.     (W)   SCALED
 JV0602* NAVD 88 ORTHO HEIGHT -     9.372 (meters)       30.75  (feet) ADJUSTED
 JV0602  ______________________________________________________________________
 JV0602  GEOID HEIGHT    -        -32.729 (meters)                     GEOID18
 JV0602  DYNAMIC HEIGHT  -          9.367 (meters)       30.73  (feet) COMP
 JV0602  MODELED GRAVITY -    980,098.8   (mgal)                       NAVD 88
 JV0602
 JV0602  VERT ORDER      -  FIRST     CLASS I
 JV0602
 JV0602.The horizontal coordinates were scaled from a map and have
 JV0602.an estimated accuracy of +/- 6 seconds.
 JV0602
 JV0602.The orthometric height was determined by differential leveling and
 JV0602.adjusted by the NATIONAL GEODETIC SURVEY
 JV0602.in February 1998.
 JV0602
 JV0602.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0602.GEOID18 height accuracy estimate available here.
 JV0602
 JV0602.Click photographs - Photos may exist for this station.
 JV0602
 JV0602.The dynamic height is computed by dividing the NAVD 88
 JV0602.geopotential number by the normal gravity value computed on the
 JV0602.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0602.degrees latitude (g = 980.6199 gals.).
 JV0602
 JV0602.The modeled gravity was interpolated from observed gravity values.
 JV0602
 JV0602;                    North         East    Units  Estimated Accuracy
 JV0602;SPC MD       -   173,630.      430,960.      MT  (+/- 180 meters Scaled)
 JV0602
 JV0602_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ583436(NAD 83)
 JV0602
 JV0602                          SUPERSEDED SURVEY CONTROL
 JV0602
 JV0602  NAVD 88 (06/15/91)    9.382  (m)           30.78   (f) SUPERSEDED  1 1
 JV0602  NGVD 29 (11/26/84)    9.623  (m)           31.57   (f) ADJUSTED    1 1
 JV0602
 JV0602.Superseded values are not recommended for survey control.
 JV0602
 JV0602.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0602.See file dsdata.pdf to determine how the superseded data were derived.
 JV0602
 JV0602_MARKER: DB = BENCH MARK DISK
 JV0602_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 JV0602_SP_SET: PIER
 JV0602_STAMPING: H 121 1971
 JV0602_MARK LOGO: CGS
 JV0602_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0602_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0602_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0602+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2003
 JV0602
 JV0602  HISTORY     - Date     Condition        Report By
 JV0602  HISTORY     - 1971     MONUMENTED       NGS
 JV0602  HISTORY     - 19960201 GOOD             MCCRON
 JV0602  HISTORY     - 20030923 GOOD             USPSQD
 JV0602
 JV0602                          STATION DESCRIPTION
 JV0602
 JV0602'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0602'AT BALTIMORE.
 JV0602'AT WEST BALTIMORE, ABOUT 1.55 MILES SOUTH ALONG OLD ANNAPOLIS
 JV0602'ROAD FROM THE OVERPASS FOR THE BALTIMORE-WASHINGTON EXPRESSWAY,
 JV0602'AT THE ROAD UNDERPASS FOR THE SOUTH LANES OF THE BALTIMORE HARBOR
 JV0602'TUNNEL THRUWAY, SET VERTICALLY IN THE EAST FACE OF THE SOUTH LEG
 JV0602'OF THE FIRST CONCRETE PIER WEST OF THE ROAD, 27 FEET WEST OF
 JV0602'THE CENTER LINE OF THE ROAD, AND ABOUT 1 1/2 FEET ABOVE THE
 JV0602'LEVEL OF THE GROUND.
 JV0602
 JV0602                          STATION RECOVERY (1996)
 JV0602
 JV0602'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 JV0602'RECOVERED AS DESCRIBED.
 JV0602
 JV0602                          STATION RECOVERY (2003)
 JV0602
 JV0602'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0602'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0298 ***********************************************************************
 JV0298  DESIGNATION -  H 122
 JV0298  PID         -  JV0298
 JV0298  STATE/COUNTY-  MD/QUEEN ANNES
 JV0298  COUNTRY     -  US
 JV0298  USGS QUAD   -  CENTREVILLE (2017)
 JV0298
 JV0298                         *CURRENT SURVEY CONTROL
 JV0298  ______________________________________________________________________
 JV0298* NAD 83(1986) POSITION- 39 03 36.30   (N) 076 03 09.45   (W)   HD_HELD1
 JV0298* NAVD 88 ORTHO HEIGHT -    16.841 (meters)       55.25  (feet) ADJUSTED
 JV0298  ______________________________________________________________________
 JV0298  GEOID HEIGHT    -        -33.786 (meters)                     GEOID18
 JV0298  DYNAMIC HEIGHT  -         16.832 (meters)       55.22  (feet) COMP
 JV0298  MODELED GRAVITY -    980,092.2   (mgal)                       NAVD 88
 JV0298
 JV0298  VERT ORDER      -  FIRST     CLASS II
 JV0298
 JV0298.The horizontal coordinates were determined by differentially corrected
 JV0298.hand held GPS observations or other comparable positioning techniques
 JV0298.and have an estimated accuracy of +/- 3 meters.
 JV0298
 JV0298.The orthometric height was determined by differential leveling and
 JV0298.adjusted by the NATIONAL GEODETIC SURVEY
 JV0298.in June 1991.
 JV0298
 JV0298.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0298.GEOID18 height accuracy estimate available here.
 JV0298
 JV0298.Click photographs - Photos may exist for this station.
 JV0298
 JV0298.The dynamic height is computed by dividing the NAVD 88
 JV0298.geopotential number by the normal gravity value computed on the
 JV0298.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0298.degrees latitude (g = 980.6199 gals.).
 JV0298
 JV0298.The modeled gravity was interpolated from observed gravity values.
 JV0298
 JV0298;                    North         East    Units  Estimated Accuracy
 JV0298;SPC MD       -   155,101.6     481,993.1     MT  (+/- 3 meters HH1 GPS) 
 JV0298
 JV0298_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0892723971(NAD 83)
 JV0298
 JV0298                          SUPERSEDED SURVEY CONTROL
 JV0298
 JV0298  NGVD 29 (11/26/84)   17.079  (m)           56.03   (f) ADJUSTED    1 2
 JV0298
 JV0298.Superseded values are not recommended for survey control.
 JV0298
 JV0298.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0298.See file dsdata.pdf to determine how the superseded data were derived.
 JV0298
 JV0298_MARKER: DB = BENCH MARK DISK
 JV0298_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0298_STAMPING: H 122 1971
 JV0298_MARK LOGO: CGS
 JV0298_PROJECTION: RECESSED 3 CENTIMETERS
 JV0298_MAGNETIC: I = MARKER IS A STEEL ROD
 JV0298_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0298_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0298+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV0298_ROD/PIPE-DEPTH: 17.1 meters
 JV0298
 JV0298  HISTORY     - Date     Condition        Report By
 JV0298  HISTORY     - 1971     MONUMENTED       NGS
 JV0298  HISTORY     - 1980     GOOD             LOCSUR
 JV0298  HISTORY     - 20000326 GOOD             USPSQD
 JV0298  HISTORY     - 20020301 POOR             USPSQD
 JV0298  HISTORY     - 20060318 GOOD             USPSQD
 JV0298  HISTORY     - 20140823 GOOD             USPSQD
 JV0298  HISTORY     - 20250731 GOOD             PROFLN
 JV0298
 JV0298                          STATION DESCRIPTION
 JV0298
 JV0298'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0298'ABOUT 1.35 MILES NORTHEAST ALONG U.S. HIGHWAY 213 FROM THE
 JV0298'COURTHOUSE AT CENTREVILLE, NEAR THE JUNCTION OF SPANIARD NECK
 JV0298'ROAD LEADING NORTHERLY, NEAR THE NORTH CORNER OF A LAWN FOR A
 JV0298'TWO STORY FARM HOUSE, 201.7 FEET NORTH OF THE NORTH PORCH CORNER
 JV0298'OF THE HOUSE, 55.5 FEET SOUTH OF THE CENTER OF THE JUNCTION OF
 JV0298'SPANIARD NECK ROAD AND U.S. HIGHWAY 13, 42 FEET SOUTHEAST OF THE
 JV0298'CENTER LINE OF THE HIGHWAY, 17 FEET SOUTHWEST OF THE CENTER LINE
 JV0298'OF A LANE, 12 1/2 FEET SOUTHEAST OF THE NORTH FENCE CORNER POST,
 JV0298'AT THE NORTHEAST END OF A ONE FOOT HIGH METAL CURBING IN FRONT
 JV0298'OF THE HOUSE, 1 FOOT NORTHEAST OF A WOODEN RAIL FENCE, 1 FOOT
 JV0298'ABOVE THE LEVEL OF THE HIGHWAY, AND IS A DISK ON THE TOP OF A
 JV0298'COPPER COATED STEEL ROD ONE INCH BELOW THE LEVEL OF THE GROUND
 JV0298'AND ENCASED IN A 6 INCH STEEL PIPE FLUSH WITH THE GROUND.  THE
 JV0298'ROD WAS DRIVEN TO A DEPTH OF 56 FEET.
 JV0298
 JV0298                          STATION RECOVERY (1980)
 JV0298
 JV0298'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1980
 JV0298'RECOVERED IN GOOD CONDITION.
 JV0298
 JV0298                          STATION RECOVERY (2000)
 JV0298
 JV0298'RECOVERY NOTE BY US POWER SQUADRON 2000 (JKW)
 JV0298'REFERENCE TO US HWY 213/13 SHOULD READ STATE HWY 213, METAL CURBING
 JV0298'SHOULD BE CHANGED TO 1 FOOT POURED CONCRETE CURBING.  LANE JUST NW OF
 JV0298'MARK IS BEING USED AS AN ACCESS ROAD TO A NEW HOUSING DEVELOPMENT AND
 JV0298'MAY BE PAVED IN THE NEAR FUTURE.  THE MARK IS LOCATED 41 FEET S OF
 JV0298'UTILITY POLE 34157/18547, REPLACING 75N.
 JV0298
 JV0298                          STATION RECOVERY (2002)
 JV0298
 JV0298'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV0298'6 IN. STEEL PIPE CASING DISTURBED BY GRADING EQUIPMENT.  REFERENCED
 JV0298'LANE IS NOW WEXFORD DRIVE.  MARK IS 42.7 FT. ESE OF CENTER OF ROUTE
 JV0298'213, 87.3 FT. SSW OF POLE 34158, 49.3 FT. SW OF THE CENTER OF A BRICK
 JV0298'ENTRANCE SIGN IN THE MIDDLE OF WEXFORD DRIVE, 15.4 FT. WNW OF THE
 JV0298'SOUTH BRICK GATEWAY CORNER. LARGE HOUSING DEVELOPMENT N AND E.
 JV0298
 JV0298                          STATION RECOVERY (2006)
 JV0298
 JV0298'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JV0298'RECOVERED IN GOOD CONDITION.
 JV0298
 JV0298                          STATION RECOVERY (2014)
 JV0298
 JV0298'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV0298'RECOVERED IN GOOD CONDITION.
 JV0298
 JV0298                          STATION RECOVERY (2025)
 JV0298
 JV0298'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0298'THE MARK IS ON THE SOUTHERLY SIDE OF WEXFORD DRIVE (ENTRANCE TO NORTH
 JV0298'BROOK), 17 FT (5.2 M) EAST OF THE EASTERLY HIGHWAY CURB, 16 FT (4.9 M)
 JV0298'WEST OF THE WEST FACE OF A BRICK COLUMN, 8 FT (2.4 M) EASTERLY OF THE
 JV0298'MAIN (CENTER) OVERHEAD POWER LINE, 6.5 FT (2.0 M) SOUTHEAST RADIAL TO
 JV0298'THE CURVE FROM THE CURB, 1 FT (0.3 M) NORTH OF THE WESTMOST WOODEN
 JV0298'FENCE POST THAT IS NEXT TO A WHITE VINYL FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0827 ***********************************************************************
 HV0827  DESIGNATION -  H 123
 HV0827  PID         -  HV0827
 HV0827  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0827  COUNTRY     -  US
 HV0827  USGS QUAD   -  BRANDYWINE (2016)
 HV0827
 HV0827                         *CURRENT SURVEY CONTROL
 HV0827  ______________________________________________________________________
 HV0827* NAD 83(1986) POSITION- 38 41 56.7    (N) 076 52 07.0    (W)   HD_HELD2
 HV0827* NAVD 88 ORTHO HEIGHT -    73.267 (meters)      240.38  (feet) ADJUSTED
 HV0827  ______________________________________________________________________
 HV0827  GEOID HEIGHT    -        -32.831 (meters)                     GEOID18
 HV0827  DYNAMIC HEIGHT  -         73.225 (meters)      240.24  (feet) COMP
 HV0827  MODELED GRAVITY -    980,051.9   (mgal)                       NAVD 88
 HV0827
 HV0827  VERT ORDER      -  FIRST     CLASS II
 HV0827
 HV0827.The horizontal coordinates were established by autonomous hand held GPS
 HV0827.observations and have an estimated accuracy of +/- 10 meters.
 HV0827
 HV0827.The orthometric height was determined by differential leveling and
 HV0827.adjusted by the NATIONAL GEODETIC SURVEY
 HV0827.in June 1991.
 HV0827
 HV0827.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0827.GEOID18 height accuracy estimate available here.
 HV0827
 HV0827.Click photographs - Photos may exist for this station.
 HV0827
 HV0827.The dynamic height is computed by dividing the NAVD 88
 HV0827.geopotential number by the normal gravity value computed on the
 HV0827.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0827.degrees latitude (g = 980.6199 gals.).
 HV0827
 HV0827.The modeled gravity was interpolated from observed gravity values.
 HV0827
 HV0827;                    North         East    Units  Estimated Accuracy
 HV0827;SPC MD       -   114,611.      411,429.      MT  (+/- 10 meters HH2 GPS)
 HV0827
 HV0827_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3750485041(NAD 83)
 HV0827
 HV0827                          SUPERSEDED SURVEY CONTROL
 HV0827
 HV0827  NGVD 29 (11/26/84)   73.493  (m)          241.12   (f) ADJUSTED    1 2
 HV0827
 HV0827.Superseded values are not recommended for survey control.
 HV0827
 HV0827.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0827.See file dsdata.pdf to determine how the superseded data were derived.
 HV0827
 HV0827_MARKER: DB = BENCH MARK DISK
 HV0827_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0827_SP_SET: CATCH BASIN
 HV0827_STAMPING: H 123 1971
 HV0827_MARK LOGO: CGS
 HV0827_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0827_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0827+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2004
 HV0827
 HV0827  HISTORY     - Date     Condition        Report By
 HV0827  HISTORY     - 1971     MONUMENTED       NGS
 HV0827  HISTORY     - 1975     GOOD             NGS
 HV0827  HISTORY     - 20040726 GOOD             GEOCAC
 HV0827
 HV0827                          STATION DESCRIPTION
 HV0827
 HV0827'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0827'AT TB.
 HV0827'AT TB, AT THE INTERSECTION OF U.S. HIGHWAY 301 AND STATE HIGHWAY
 HV0827'381 (BRANDYWINE ROAD), ALONG THE NORTHEAST SIDE OF THE CROSSOVER
 HV0827'BETWEEN THE NORTHEAST-SOUTHWEST LANES OF U.S. HIGHWAY 301, 39
 HV0827'FEET SOUTHEAST OF THE SOUTHWEST-BOUND LANE OF U.S. 301, 36 FEET
 HV0827'NORTHWEST OF THE NORTHEAST-BOUND LANE OF U.S. 301, 34 FEET
 HV0827'NORTHEAST OF THE CENTER LINE OF THE CROSSOVER (STATE HIGHWAY
 HV0827'381), 5.9 FEET NORTHEAST OF A STEEL SUPPORT POLE FOR TRAFFIC
 HV0827'SIGNALS, ABOUT 1 FOOT BELOW THE LEVEL OF U.S. 301 AND IS A DISK
 HV0827'ON TOP OF THE SOUTHEAST CORNER OF A CONCRETE CATCH BASIN.
 HV0827
 HV0827                          STATION RECOVERY (1975)
 HV0827
 HV0827'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0827'RECOVERED IN GOOD CONDITION.
 HV0827
 HV0827                          STATION RECOVERY (2004)
 HV0827
 HV0827'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV0827'THE 1971 DESCRIPTION IS CORRECTED AS FOLLOWS.  THE STATION IS AT THE
 HV0827'INTERSECTION OF US HIGHWAY 301 AND MD HIGHWAY 381 (BRANDYWINE ROAD),
 HV0827'ALONG THE NORTHEAST SIDE OF THE CROSSOVER, 39 FEET (11.89 M) SOUTHEAST
 HV0827'OF THE SOUTHBOUND LANES OF US HIGHWAY 301, 36 FEET (10.97 M) NORTHWEST
 HV0827'OF THE NORTHBOUND LANES OF US HIGHWAY 301, 34 FEET
 HV0827'(10.36 M) NORTHEAST OF THE CENTERLINE OF MD HIGHWAY 381, 3.5 FEET
 HV0827'(1.07 M) NORTHEAST OF THE NORTHEAST EDGE OF PAVEMENT OF THE MD HIGHWAY
 HV0827'381 CROSSOVER, 3.0 FEET (0.91 M) SOUTHWEST OF A 4X4 WOODEN POST FOR A
 HV0827'ONE WAY SIGN, 7.0 FEET (2.13 M) SOUTHWEST OF THE SOUTHWEST CORNER OF A
 HV0827'THREE FOOT SQUARE CONCRETE PAD WITH A TWO-FOOT BY 2.5-FOOT STEEL
 HV0827'HATCH, ABOUT ONE FOOT BELOW THE LEVEL OF US HIGHWAY 301,
 HV0827'FOUR INCHES BELOW THE SURFACE OF THE SOD, AND IS A DISK ON THE TOP OF
 HV0827'THE SOUTHEAST CORNER OF A PARTIALLY-BURIED CONCRETE CATCH BASIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0433 ***********************************************************************
 HV0433  DESIGNATION -  H 124
 HV0433  PID         -  HV0433
 HV0433  STATE/COUNTY-  MD/DORCHESTER
 HV0433  COUNTRY     -  US
 HV0433  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV0433
 HV0433                         *CURRENT SURVEY CONTROL
 HV0433  ______________________________________________________________________
 HV0433* NAD 83(1986) POSITION- 38 28 10.     (N) 076 17 21.     (W)   SCALED
 HV0433* NAVD 88 ORTHO HEIGHT -     2.038 (meters)        6.69  (feet) ADJUSTED
 HV0433  ______________________________________________________________________
 HV0433  GEOID HEIGHT    -        -34.642 (meters)                     GEOID18
 HV0433  DYNAMIC HEIGHT  -          2.037 (meters)        6.68  (feet) COMP
 HV0433  MODELED GRAVITY -    980,030.7   (mgal)                       NAVD 88
 HV0433
 HV0433  VERT ORDER      -  FIRST     CLASS II
 HV0433
 HV0433.The horizontal coordinates were scaled from a map and have
 HV0433.an estimated accuracy of +/- 6 seconds.
 HV0433
 HV0433.The orthometric height was determined by differential leveling and
 HV0433.adjusted by the NATIONAL GEODETIC SURVEY
 HV0433.in June 1991.
 HV0433
 HV0433.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0433.GEOID18 height accuracy estimate available here.
 HV0433
 HV0433.Click photographs - Photos may exist for this station.
 HV0433
 HV0433.The dynamic height is computed by dividing the NAVD 88
 HV0433.geopotential number by the normal gravity value computed on the
 HV0433.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0433.degrees latitude (g = 980.6199 gals.).
 HV0433
 HV0433.The modeled gravity was interpolated from observed gravity values.
 HV0433
 HV0433;                    North         East    Units  Estimated Accuracy
 HV0433;SPC MD       -    89,350.      462,030.      MT  (+/- 180 meters Scaled)
 HV0433
 HV0433_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH875586(NAD 83)
 HV0433
 HV0433                          SUPERSEDED SURVEY CONTROL
 HV0433
 HV0433  NGVD 29 (11/26/84)    2.272  (m)            7.45   (f) ADJUSTED    1 2
 HV0433
 HV0433.Superseded values are not recommended for survey control.
 HV0433
 HV0433.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0433.See file dsdata.pdf to determine how the superseded data were derived.
 HV0433
 HV0433_MARKER: DB = BENCH MARK DISK
 HV0433_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0433+WITH SETTING: INTO GROUND
 HV0433_STAMPING: H 124 1971
 HV0433_MARK LOGO: CGS
 HV0433_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0433+STABILITY: SURFACE MOTION
 HV0433
 HV0433  HISTORY     - Date     Condition        Report By
 HV0433  HISTORY     - 1971     MONUMENTED       NGS
 HV0433  HISTORY     - 20060208 MARK NOT FOUND   USPSQD
 HV0433
 HV0433                          STATION DESCRIPTION
 HV0433
 HV0433'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0433'5 MI SW FROM MADISON.
 HV0433'ABOUT 4.95 MILES SOUTHWEST ALONG STATE HIGHWAY 16 FROM THE
 HV0433'GETHSEMANE METHODIST CHURCH AT MADISON, AT THE EAST END OF THE
 HV0433'HIGHWAY BRIDGE OVER SLAUGHTER CREEK, 93.8 FEET EAST OF THE
 HV0433'SOUTHEAST CORNER OF THE WOODEN BRIDGE, 18 FEET SOUTH OF THE
 HV0433'CENTER LINE OF THE HIGHWAY, 1.6 FEET WEST OF A POST AT THE WEST
 HV0433'END OF A FENCE, 1/2 FOOT SOUTH OF THE FENCE, 1.3 FEET EAST OF A
 HV0433'METAL WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, AND ON THE TOP
 HV0433'OF A 4-FOOT SECTION OF COPPER COATED ROD THAT IS ATTACHED TO A
 HV0433'METAL BASE PLATE.  THE DISK IS 1 INCH BELOW THE GROUND AND IS
 HV0433'PROTECTED BY A 6-INCH METAL PIPE THAT IS LEVEL WITH THE GROUND.
 HV0433
 HV0433                          STATION RECOVERY (2006)
 HV0433
 HV0433'RECOVERY NOTE BY US POWER SQUADRON 2006
 HV0433'ROAD HAS BEEN REDONE. MARK HAS BEEN RESET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0434 ***********************************************************************
 HV0434  DESIGNATION -  H 124 RESET
 HV0434  PID         -  HV0434
 HV0434  STATE/COUNTY-  MD/DORCHESTER
 HV0434  COUNTRY     -  US
 HV0434  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV0434
 HV0434                         *CURRENT SURVEY CONTROL
 HV0434  ______________________________________________________________________
 HV0434* NAD 83(1986) POSITION- 38 28 10.     (N) 076 17 21.     (W)   SCALED
 HV0434* NAVD 88 ORTHO HEIGHT -     1.89  (meters)        6.2   (feet) RESET
 HV0434  ______________________________________________________________________
 HV0434  GEOID HEIGHT    -        -34.642 (meters)                     GEOID18
 HV0434  VERT ORDER      -  THIRD
 HV0434
 HV0434.The horizontal coordinates were scaled from a map and have
 HV0434.an estimated accuracy of +/- 6 seconds.
 HV0434
 HV0434.The orthometric height was computed from unverified reset data.
 HV0434
 HV0434.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0434.GEOID18 height accuracy estimate available here.
 HV0434
 HV0434.Click photographs - Photos may exist for this station.
 HV0434
 HV0434;                    North         East    Units  Estimated Accuracy
 HV0434;SPC MD       -    89,350.      462,030.      MT  (+/- 180 meters Scaled)
 HV0434
 HV0434_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH875586(NAD 83)
 HV0434
 HV0434                          SUPERSEDED SURVEY CONTROL
 HV0434
 HV0434  NGVD 29 (??/??/??)    2.12   (m)            7.0    (f) RESET       3  
 HV0434
 HV0434.Superseded values are not recommended for survey control.
 HV0434
 HV0434.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0434.See file dsdata.pdf to determine how the superseded data were derived.
 HV0434
 HV0434_MARKER: DB = BENCH MARK DISK
 HV0434_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0434_STAMPING: H 124 RESET 1973
 HV0434_MARK LOGO: CGS
 HV0434_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0434+STABILITY: SURFACE MOTION
 HV0434
 HV0434  HISTORY     - Date     Condition        Report By
 HV0434  HISTORY     - 1973     MONUMENTED       MDDT
 HV0434
 HV0434                          STATION DESCRIPTION
 HV0434
 HV0434'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1973
 HV0434'14 MI SW FROM CAMBRIDGE.
 HV0434'STATION IS LOCATED APPROX, 14 MILES SW OF CAMBRIDGE, MARYLAND,
 HV0434'ABOUT 4.95 MILES SW ALONG MARYLAND ROUTE 16 FROM THE GETHSEMANE
 HV0434'METHODIST CHURCH AT MADISON, AT THE EAST END OF THE HIGHWAY
 HV0434'BRIDGE OVER SLAUGHTER CREEK.  IT IS 20.30 FT. NORTH OF THE
 HV0434'CENTERLINE OF MARYLAND ROUTE 16, 41.20 FT. NORTH NORTHEAST OF A
 HV0434'NAIL AND CAP IN THE EAST END OF THE SOUTH SIDE OF THE BRIDGE
 HV0434'26.50 FT. EAST OF A NAIL AND CAP IN THE EAST END OF THE NORTH SIDE
 HV0434'OF THE BRIDGE, 29.35 FT. S.E. OF A SMALL TELEPHONE POLE
 HV0434'AND 1.7 FT. SOUTH OF A METAL WITNESS POST.  A STANDARD
 HV0434'U.S.C. AND G.S. DISK SET IN CONCRETE FLUSH WITH THE GROUND
 HV0434'STAMPED H-124 RESET 1973.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ7984 ***********************************************************************
 AJ7984  CBN         -  This is a Cooperative Base Network Control Station.
 AJ7984  DESIGNATION -  H 124 RESET
 AJ7984  PID         -  AJ7984
 AJ7984  STATE/COUNTY-  MD/DORCHESTER
 AJ7984  COUNTRY     -  US
 AJ7984  USGS QUAD   -  TAYLORS ISLAND (2016)
 AJ7984
 AJ7984                         *CURRENT SURVEY CONTROL
 AJ7984  ______________________________________________________________________
 AJ7984* NAD 83(2011) POSITION- 38 28 11.25389(N) 076 17 21.36748(W)   ADJUSTED
 AJ7984* NAD 83(2011) ELLIP HT-   -32.073 (meters)        (06/27/12)   ADJUSTED
 AJ7984* NAD 83(2011) EPOCH   -  2010.00
 AJ7984* NAVD 88 ORTHO HEIGHT -     2.562 (meters)        8.41  (feet) ADJUSTED
 AJ7984  ______________________________________________________________________
 AJ7984  GEOID HEIGHT    -        -34.641 (meters)                     GEOID18
 AJ7984  NAD 83(2011) X  -  1,185,131.579 (meters)                     COMP
 AJ7984  NAD 83(2011) Y  - -4,857,650.926 (meters)                     COMP
 AJ7984  NAD 83(2011) Z  -  3,946,384.668 (meters)                     COMP
 AJ7984  LAPLACE CORR    -         -5.33  (seconds)                    DEFLEC18
 AJ7984  DYNAMIC HEIGHT  -          2.560 (meters)        8.40  (feet) COMP
 AJ7984  MODELED GRAVITY -    980,030.7   (mgal)                       NAVD 88
 AJ7984
 AJ7984  VERT ORDER      -  SECOND    CLASS I
 AJ7984
 AJ7984  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ7984  Standards:
 AJ7984         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ7984            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ7984  -------------------------------------------------------------------
 AJ7984  NETWORK    0.49   0.96           0.21   0.19   0.49      0.00474922
 AJ7984  -------------------------------------------------------------------
 AJ7984  Click here for local accuracies and other accuracy information.
 AJ7984
 AJ7984.The horizontal coordinates were established by GPS observations
 AJ7984.and adjusted by the National Geodetic Survey in June 2012.
 AJ7984
 AJ7984.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ7984.been affixed to the stable North American tectonic plate. See 
 AJ7984.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ7984
 AJ7984.The horizontal coordinates are valid at the epoch date displayed above
 AJ7984.which is a decimal equivalence of Year/Month/Day.
 AJ7984
 AJ7984.The orthometric height was determined by differential leveling and
 AJ7984.adjusted by the NATIONAL GEODETIC SURVEY
 AJ7984.in October 2007.
 AJ7984
 AJ7984.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ7984.GEOID18 height accuracy estimate available here.
 AJ7984
 AJ7984.Click photographs - Photos may exist for this station.
 AJ7984
 AJ7984.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ7984
 AJ7984.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ7984
 AJ7984.The ellipsoidal height was determined by GPS observations
 AJ7984.and is referenced to NAD 83.
 AJ7984
 AJ7984.The dynamic height is computed by dividing the NAVD 88
 AJ7984.geopotential number by the normal gravity value computed on the
 AJ7984.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ7984.degrees latitude (g = 980.6199 gals.).
 AJ7984
 AJ7984.The modeled gravity was interpolated from observed gravity values.
 AJ7984
 AJ7984. The following values were computed from the NAD 83(2011) position.
 AJ7984
 AJ7984;                    North         East     Units Scale Factor Converg.
 AJ7984;SPC MD       -    89,391.681   462,022.749   MT  0.99997480   +0 26 45.9
 AJ7984;SPC MD       -   293,279.21  1,515,819.64   sFT  0.99997480   +0 26 45.9
 AJ7984;UTM  18      - 4,258,728.878   387,529.403   MT  0.99975578   -0 48 07.7
 AJ7984
 AJ7984!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ7984!SPC MD       -   1.00000503  x   0.99997480  =   0.99997983
 AJ7984!UTM  18      -   1.00000503  x   0.99975578  =   0.99976081
 AJ7984
 AJ7984_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8752958728(NAD 83)
 AJ7984
 AJ7984                          SUPERSEDED SURVEY CONTROL
 AJ7984
 AJ7984  NAD 83(2007)-  38 28 11.25414(N)    076 17 21.36815(W) AD(2002.00) 0
 AJ7984  ELLIP H (02/10/07)  -32.048  (m)                       GP(2002.00)    
 AJ7984  NAD 83(1991)-  38 28 11.25406(N)    076 17 21.36808(W) AD(       ) A
 AJ7984  ELLIP H (02/12/02)  -32.043  (m)                       GP(       ) 4 1
 AJ7984  NAVD 88 (02/28/06)    2.6    (m)  GEOID03  model used  GPS OBS        
 AJ7984  NAVD 88 (02/12/02)    2.5    (m)  GEOID99  model used  GPS OBS        
 AJ7984
 AJ7984.Superseded values are not recommended for survey control.
 AJ7984
 AJ7984.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ7984.See file dsdata.pdf to determine how the superseded data were derived.
 AJ7984
 AJ7984_MARKER: DD = SURVEY DISK
 AJ7984_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 AJ7984_SP_SET: BRIDGE ABUTMENT
 AJ7984_STAMPING: H 124 RESET 1998
 AJ7984_MARK LOGO: MDSHA
 AJ7984_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ7984_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ7984_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ7984+SATELLITE: SATELLITE OBSERVATIONS - February 18, 2007
 AJ7984
 AJ7984  HISTORY     - Date     Condition        Report By
 AJ7984  HISTORY     - 1998     MONUMENTED       MDSHA
 AJ7984  HISTORY     - 20000405 GOOD             MDSHA
 AJ7984  HISTORY     - 20050920 GOOD             NGS
 AJ7984  HISTORY     - 20060110 GOOD             MDSHA
 AJ7984  HISTORY     - 20060209 GOOD             USPSQD
 AJ7984  HISTORY     - 20070218 GOOD             USPSQD
 AJ7984
 AJ7984                          STATION DESCRIPTION
 AJ7984
 AJ7984'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ7984'THE STATION IS LOCATED AT TAYLORS ISLAND, DORCHESTER COUNTY, MARYLAND.
 AJ7984'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 16 AND STATE
 AJ7984'HIGHWAY 335 IN CHURCH CREEK, PROCEED SOUTHWEST ALONG STATE HIGHWAY 16
 AJ7984'FOR 9.35 MILES (15.05 KM) TO THE HIGHWAY BRIDGE OVER SLAUGHTER CREEK
 AJ7984'AND THE STATION ON THE RIGHT.  THE STATION IS A MARYLAND STATE HIGHWAY
 AJ7984'SURVEY DISK SET IN A DRILL HOLE IN THE EAST BRIDGE ABUTMENT, 3.0 FEET
 AJ7984'(0.9 M) SOUTHEAST OF THE NORTHWEST WHEEL GUARD, 27.4 FEET (8.4 M)
 AJ7984'NORTHWEST OF THE SOUTHEAST WHEEL GUARD, 58.6 FEET (17.9 M) SOUTHWEST
 AJ7984'OF A DRAINAGE INLET, 177.2 FEET (54.0 M) SOUTHWEST OF THE NORTHEAST
 AJ7984'END OF A GUARD RAIL, 71.1 FEET (21.7 M) NORTH OF THE SOUTH END OF A
 AJ7984'WOODEN BULKHEAD AND ABOUT 0.5 FEET (15.2 CM) HIGHER THAN THE ROAD
 AJ7984'SURFACE.
 AJ7984
 AJ7984                          STATION RECOVERY (2005)
 AJ7984
 AJ7984'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (GS)
 AJ7984'RECOVERED 2.5 FT SOUTH FROM GUARDRAIL AND 1 FT NORTH FROM WHITE
 AJ7984'STRIPE.
 AJ7984
 AJ7984                          STATION RECOVERY (2006)
 AJ7984
 AJ7984'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2006 (MRA)
 AJ7984'RECOVERED AS DESCRIBED.
 AJ7984
 AJ7984                          STATION RECOVERY (2006)
 AJ7984
 AJ7984'RECOVERY NOTE BY US POWER SQUADRON 2006
 AJ7984'THERE IS A NEW BRIDGE AT THIS LOCATION. THE STATION IS IN THE ROADBED
 AJ7984'OF THE WEST BOUND LANE JUST PAST THE EXPANSION JOINT.
 AJ7984
 AJ7984                          STATION RECOVERY (2007)
 AJ7984
 AJ7984'RECOVERY NOTE BY US POWER SQUADRON 2007 (NH)
 AJ7984'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0531 ***********************************************************************
 JV0531  DESIGNATION -  H 125
 JV0531  PID         -  JV0531
 JV0531  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0531  COUNTRY     -  US
 JV0531  USGS QUAD   -  GIBSON ISLAND (2017)
 JV0531
 JV0531                         *CURRENT SURVEY CONTROL
 JV0531  ______________________________________________________________________
 JV0531* NAD 83(1986) POSITION- 39 01 32.73   (N) 076 25 58.23   (W)   HD_HELD1
 JV0531* NAVD 88 ORTHO HEIGHT -     6.948 (meters)       22.80  (feet) ADJUSTED
 JV0531  ______________________________________________________________________
 JV0531  GEOID HEIGHT    -        -33.366 (meters)                     GEOID18
 JV0531  DYNAMIC HEIGHT  -          6.945 (meters)       22.79  (feet) COMP
 JV0531  MODELED GRAVITY -    980,077.6   (mgal)                       NAVD 88
 JV0531
 JV0531  VERT ORDER      -  FIRST     CLASS II
 JV0531
 JV0531.The horizontal coordinates were determined by differentially corrected
 JV0531.hand held GPS observations or other comparable positioning techniques
 JV0531.and have an estimated accuracy of +/- 3 meters.
 JV0531
 JV0531.The orthometric height was determined by differential leveling and
 JV0531.adjusted by the NATIONAL GEODETIC SURVEY
 JV0531.in June 1991.
 JV0531
 JV0531.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0531.GEOID18 height accuracy estimate available here.
 JV0531
 JV0531.Click photographs - Photos may exist for this station.
 JV0531
 JV0531.The dynamic height is computed by dividing the NAVD 88
 JV0531.geopotential number by the normal gravity value computed on the
 JV0531.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0531.degrees latitude (g = 980.6199 gals.).
 JV0531
 JV0531.The modeled gravity was interpolated from observed gravity values.
 JV0531
 JV0531;                    North         East    Units  Estimated Accuracy
 JV0531;SPC MD       -   151,018.2     449,110.5     MT  (+/- 3 meters HH1 GPS) 
 JV0531
 JV0531_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7597020611(NAD 83)
 JV0531
 JV0531                          SUPERSEDED SURVEY CONTROL
 JV0531
 JV0531  NGVD 29 (11/26/84)    7.192  (m)           23.60   (f) ADJUSTED    1 2
 JV0531
 JV0531.Superseded values are not recommended for survey control.
 JV0531
 JV0531.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0531.See file dsdata.pdf to determine how the superseded data were derived.
 JV0531
 JV0531_MARKER: DB = BENCH MARK DISK
 JV0531_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0531+WITH SETTING: INTO GROUND
 JV0531_STAMPING: H 125 1971
 JV0531_MARK LOGO: CGS
 JV0531_MAGNETIC: I = MARKER IS A STEEL ROD
 JV0531_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0531_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0531+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2022
 JV0531
 JV0531  HISTORY     - Date     Condition        Report By
 JV0531  HISTORY     - 1971     MONUMENTED       NGS
 JV0531  HISTORY     - 19920107 GOOD             MDSHA
 JV0531  HISTORY     - 20011111 GOOD             USPSQD
 JV0531  HISTORY     - 20031111 GOOD             URS
 JV0531  HISTORY     - 20051215 GOOD             USPSQD
 JV0531  HISTORY     - 20081117 GOOD             MDSHA
 JV0531  HISTORY     - 20220915 GOOD             MDSHA
 JV0531
 JV0531                          STATION DESCRIPTION
 JV0531
 JV0531'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0531'1.6 MI NE FROM ST MARGARETS.
 JV0531'ABOUT 1.0 MILE NORTHEAST ALONG STATE HIGHWAY 179 FROM THE ST
 JV0531'MARGARETS EPISCOPAL CHURCH AND CEMETERY AT ST MARGARETS, THENCE
 JV0531'0.65 MILE EAST ALONG U.S. HIGHWAY 301 AND 50, NEAR THE JUNCTION OF
 JV0531'BAY HEAD ROAD LEADING NORTHEAST, AT THE JUNCTION OF A PRIVATE
 JV0531'DRIVEWAY LEADING SOUTHEAST TO THE BARROWS RESIDENCE, 115 YARDS
 JV0531'NORTHEAST OF THE CENTER OF THE JUNCTION OF BAY HEAD ROAD AND THE
 JV0531'WESTBOUND LANE OF U.S. HIGHWAY 301, 14 1/2 FEET SOUTHEAST OF THE
 JV0531'CENTER LINE OF THE ROAD, 44 FEET SOUTHWEST OF THE SOUTHWEST CURB
 JV0531'LINE OF THE PRIVATE DRIVEWAY, 2 1/2 FEET SOUTHWEST OF POWER LINE POLE
 JV0531'NO. 302924, 2 FEET NORTHEAST OF A STEEL WITNESS POST, 1 1/2 FEET
 JV0531'ABOVE THE LEVEL OF THE ROAD, AND ON THE TOP OF A 4 FOOT COPPER
 JV0531'COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE
 JV0531'DISK PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND AND ENCASED
 JV0531'IN A 4 INCH STEEL PIPE THAT PROJECTS 2 INCHES ABOVE THE LEVEL OF
 JV0531'THE GROUND.
 JV0531
 JV0531                          STATION RECOVERY (1992)
 JV0531
 JV0531'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JV0531'RECOVERED IN GOOD CONDITION.
 JV0531
 JV0531                          STATION RECOVERY (2001)
 JV0531
 JV0531'RECOVERY NOTE BY US POWER SQUADRON 2001 (DAB)
 JV0531'MARK APPEARS TO BE BENT
 JV0531
 JV0531                          STATION RECOVERY (2003)
 JV0531
 JV0531'RECOVERY NOTE BY URS COMPANY 2003
 JV0531'RECOVERED IN GOOD CONDITION.
 JV0531
 JV0531                          STATION RECOVERY (2005)
 JV0531
 JV0531'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV0531'RECOVERED IN GOOD CONDITION.
 JV0531
 JV0531                          STATION RECOVERY (2008)
 JV0531
 JV0531'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 JV0531'RECOVERED IN GOOD CONDITION.
 JV0531
 JV0531                          STATION RECOVERY (2022)
 JV0531
 JV0531'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EOF)
 JV0531'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0130 ***********************************************************************
 HV0130  DESIGNATION -  H 126
 HV0130  PID         -  HV0130
 HV0130  STATE/COUNTY-  MD/QUEEN ANNES
 HV0130  COUNTRY     -  US
 HV0130  USGS QUAD   -  QUEENSTOWN (2016)
 HV0130
 HV0130                         *CURRENT SURVEY CONTROL
 HV0130  ______________________________________________________________________
 HV0130* NAD 83(1986) POSITION- 38 58 39.11   (N) 076 07 57.79   (W)   HD_HELD1
 HV0130* NAVD 88 ORTHO HEIGHT -    18.120 (meters)       59.45  (feet) ADJUSTED
 HV0130  ______________________________________________________________________
 HV0130  GEOID HEIGHT    -        -33.942 (meters)                     GEOID18
 HV0130  DYNAMIC HEIGHT  -         18.110 (meters)       59.42  (feet) COMP
 HV0130  MODELED GRAVITY -    980,076.0   (mgal)                       NAVD 88
 HV0130
 HV0130  VERT ORDER      -  FIRST     CLASS II
 HV0130
 HV0130.The horizontal coordinates were determined by differentially corrected
 HV0130.hand held GPS observations or other comparable positioning techniques
 HV0130.and have an estimated accuracy of +/- 3 meters.
 HV0130
 HV0130.The orthometric height was determined by differential leveling and
 HV0130.adjusted by the NATIONAL GEODETIC SURVEY
 HV0130.in June 1991.
 HV0130
 HV0130.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0130.GEOID18 height accuracy estimate available here.
 HV0130
 HV0130.Click photographs - Photos may exist for this station.
 HV0130
 HV0130.The dynamic height is computed by dividing the NAVD 88
 HV0130.geopotential number by the normal gravity value computed on the
 HV0130.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0130.degrees latitude (g = 980.6199 gals.).
 HV0130
 HV0130.The modeled gravity was interpolated from observed gravity values.
 HV0130
 HV0130;                    North         East    Units  Estimated Accuracy
 HV0130;SPC MD       -   145,868.9     475,148.4     MT  (+/- 3 meters HH1 GPS) 
 HV0130
 HV0130_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0188314893(NAD 83)
 HV0130
 HV0130                          SUPERSEDED SURVEY CONTROL
 HV0130
 HV0130  NGVD 29 (11/26/84)   18.353  (m)           60.21   (f) ADJUSTED    1 2
 HV0130
 HV0130.Superseded values are not recommended for survey control.
 HV0130
 HV0130.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0130.See file dsdata.pdf to determine how the superseded data were derived.
 HV0130
 HV0130_MARKER: DB = BENCH MARK DISK
 HV0130_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0130+WITH SETTING: INTO GROUND
 HV0130_STAMPING: H 126 1971
 HV0130_MARK LOGO: CGS
 HV0130_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0130+STABILITY: SURFACE MOTION
 HV0130_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0130+SATELLITE: SATELLITE OBSERVATIONS - April 28, 2006
 HV0130
 HV0130  HISTORY     - Date     Condition        Report By
 HV0130  HISTORY     - 1971     MONUMENTED       NGS
 HV0130  HISTORY     - 19991211 GOOD             USPSQD
 HV0130  HISTORY     - 20010331 GOOD             NGS
 HV0130  HISTORY     - 20040623 GOOD             GEOCAC
 HV0130  HISTORY     - 20060428 GOOD             USPSQD
 HV0130
 HV0130                          STATION DESCRIPTION
 HV0130
 HV0130'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0130'1.6 MI SE FROM QUEENSTOWN.
 HV0130'ABOUT 1.2 MILES SOUTHEAST ALONG STATE HIGHWAY 456 FROM THE POST
 HV0130'OFFICE AT QUEENSTOWN, THENCE 0.4 MILE SOUTHEAST ALONG U.S.
 HV0130'HIGHWAY 50, 259 FEET SOUTHEAST OF AND ACROSS TWO DRIVEWAYS
 HV0130'FROM THE SOUTH CORNER OF THE MAIN PART OF THE ST PETERS CHURCH
 HV0130'BUILDING, 73.8 FEET NORTHEAST OF THE CENTER LINE OF THE WESTBOUND
 HV0130'LANE OF U.S. HIGHWAY 50, 21 FEET SOUTHEAST OF THE CENTER LINE OF
 HV0130'THE SOUTHEAST DRIVEWAY TO CHURCH, 1.6 FEET SOUTH OF THE WEST
 HV0130'CORNER OF THE SOUTHEAST BRICK PILLAR AT THE SOUTHEAST DRIVEWAY
 HV0130'TO CHURCH, 1.5 FEET WEST OF A METAL WITNESS POST, ABOUT LEVEL
 HV0130'WITH THE HIGHWAY, ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD
 HV0130'1 INCH BELOW THE LEVEL OF THE GROUND AND ENCASED IN A 4 INCH
 HV0130'METAL PIPE FLUSH WITH THE GROUND.  THE METAL ROD IS ATTACHED
 HV0130'TO A METAL BASE PLATE.  NOTE-- MARK MAY BE REACHED BY GOING
 HV0130'2.15 MILES EAST ALONG U.S. HIGHWAY 50 FROM THE JUNCTION OF U.S.
 HV0130'HIGHWAY 301.
 HV0130
 HV0130                          STATION RECOVERY (1999)
 HV0130
 HV0130'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV0130'RECOVERED IN GOOD CONDITION.
 HV0130
 HV0130                          STATION RECOVERY (2001)
 HV0130
 HV0130'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0130'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0130
 HV0130                          STATION RECOVERY (2004)
 HV0130
 HV0130'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV0130'RECOVERED IN GOOD CONDITION.
 HV0130
 HV0130                          STATION RECOVERY (2006)
 HV0130
 HV0130'RECOVERY NOTE BY US POWER SQUADRON 2006 (CPS)
 HV0130'WHEN APPROACHING ON ROUTE 50, FROM THE SOUTHEAST, IT IS THE FIRST
 HV0130'DRIVEWAY. 1 FOOT FROM THE PILLARED CORNER OF THE BRICK FENCE. GIVEN
 HV0130'GPS COORDINATES ARE ACCURATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0060 ***********************************************************************
 HV0060  DESIGNATION -  H 127
 HV0060  PID         -  HV0060
 HV0060  STATE/COUNTY-  MD/TALBOT
 HV0060  COUNTRY     -  US
 HV0060  USGS QUAD   -  EASTON (2016)
 HV0060
 HV0060                         *CURRENT SURVEY CONTROL
 HV0060  ______________________________________________________________________
 HV0060* NAD 83(1986) POSITION- 38 46 26.1    (N) 076 04 24.8    (W)   HD_HELD2
 HV0060* NAVD 88 ORTHO HEIGHT -    10.933 (meters)       35.87  (feet) ADJUSTED
 HV0060  ______________________________________________________________________
 HV0060  GEOID HEIGHT    -        -34.672 (meters)                     GEOID18
 HV0060  DYNAMIC HEIGHT  -         10.927 (meters)       35.85  (feet) COMP
 HV0060  MODELED GRAVITY -    980,036.3   (mgal)                       NAVD 88
 HV0060
 HV0060  VERT ORDER      -  FIRST     CLASS II
 HV0060
 HV0060.The horizontal coordinates were established by autonomous hand held GPS
 HV0060.observations and have an estimated accuracy of +/- 10 meters.
 HV0060
 HV0060.The orthometric height was determined by differential leveling and
 HV0060.adjusted by the NATIONAL GEODETIC SURVEY
 HV0060.in June 1991.
 HV0060
 HV0060.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0060.GEOID18 height accuracy estimate available here.
 HV0060
 HV0060.Click photographs - Photos may exist for this station.
 HV0060
 HV0060.The dynamic height is computed by dividing the NAVD 88
 HV0060.geopotential number by the normal gravity value computed on the
 HV0060.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0060.degrees latitude (g = 980.6199 gals.).
 HV0060
 HV0060.The modeled gravity was interpolated from observed gravity values.
 HV0060
 HV0060;                    North         East    Units  Estimated Accuracy
 HV0060;SPC MD       -   123,318.      480,504.      MT  (+/- 10 meters HH2 GPS)
 HV0060
 HV0060_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0674292235(NAD 83)
 HV0060
 HV0060                          SUPERSEDED SURVEY CONTROL
 HV0060
 HV0060  NGVD 29 (11/26/84)   11.170  (m)           36.65   (f) ADJUSTED    1 2
 HV0060
 HV0060.Superseded values are not recommended for survey control.
 HV0060
 HV0060.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0060.See file dsdata.pdf to determine how the superseded data were derived.
 HV0060
 HV0060_MARKER: DB = BENCH MARK DISK
 HV0060_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 HV0060_SP_SET: AIR VENT
 HV0060_STAMPING: H 127 1971
 HV0060_MARK LOGO: CGS
 HV0060_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0060_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0060+STABILITY: SURFACE MOTION
 HV0060_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0060+SATELLITE: SATELLITE OBSERVATIONS - June 06, 2014
 HV0060
 HV0060  HISTORY     - Date     Condition        Report By
 HV0060  HISTORY     - 1971     MONUMENTED       NGS
 HV0060  HISTORY     - 19920716 GOOD             USPSQD
 HV0060  HISTORY     - 19991130 GOOD             MDSHA
 HV0060  HISTORY     - 20020221 GOOD             USPSQD
 HV0060  HISTORY     - 20041230 GOOD             USPSQD
 HV0060  HISTORY     - 20060401 GOOD             GEOCAC
 HV0060  HISTORY     - 20140606 GOOD             RODCON
 HV0060
 HV0060                          STATION DESCRIPTION
 HV0060
 HV0060'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0060'AT EASTON.
 HV0060'AT EASTON, AT THE EASTON POST OFFICE, AT THE SOUTHEAST ANGLE
 HV0060'OF DOVER STREET AND TALBOT LANE, SET IN THE TOP AND AT THE NORTHWEST
 HV0060'CORNER OF THE WEST ONE OF TWO CONCRETE AIR VENT FOR THE BASEMENT
 HV0060'OF THE POST OFFICE, 43 FEET WEST OF THE NORTHEAST CORNER OF THE
 HV0060'POST OFFICE BUILDING, 3.4 FEET NORTH OF THE NORTH BRICK WALL OF
 HV0060'THE POST OFFICE BUILDING, 32.7 FEET SOUTH OF THE SOUTH CURB OF
 HV0060'DOVER STREET AND 1/2 FOOT ABOVE THE LEVEL OF THE GROUND.
 HV0060
 HV0060                          STATION RECOVERY (1992)
 HV0060
 HV0060'RECOVERY NOTE BY US POWER SQUADRON 1992 (SRD)
 HV0060'RECOVERED IN GOOD CONDITION.
 HV0060
 HV0060                          STATION RECOVERY (1999)
 HV0060
 HV0060'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HV0060'RECOVERED AS DESCRIBED.
 HV0060
 HV0060                          STATION RECOVERY (2002)
 HV0060
 HV0060'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0060'RECOVERED IN GOOD CONDITION.
 HV0060
 HV0060                          STATION RECOVERY (2004)
 HV0060
 HV0060'RECOVERY NOTE BY US POWER SQUADRON 2004 (RLH)
 HV0060'THE WORDS IN THE THIRD LINE OF THE DESCRIPTION, 'AT THE SOUTHEAST
 HV0060'ANGLE OF DOVER STRET AND TALBOT LANE,' ARE GROSSLY MISLEADING AND
 HV0060'COMPLICATED THE SEARCH.  RECOMMENDED=  STRIKE THESE WORDS.  THE REST
 HV0060'OF THE DESCRIPTION AND MEASUREMENTS ARE OK.
 HV0060
 HV0060                          STATION RECOVERY (2006)
 HV0060
 HV0060'RECOVERY NOTE BY GEOCACHING 2006 (APC)
 HV0060'THE AIR VENT ON WHICH THE STATION DISK IS MOUNTED HAS A PLEXIGLAS
 HV0060'COVER, WHICH MAY IMPEDE ACCESS.
 HV0060
 HV0060                          STATION RECOVERY (2014)
 HV0060
 HV0060'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 HV0060'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0552 ***********************************************************************
 HV0552  DESIGNATION -  H 128
 HV0552  PID         -  HV0552
 HV0552  STATE/COUNTY-  MD/ST MARYS
 HV0552  COUNTRY     -  US
 HV0552  USGS QUAD   -  HOLLYWOOD (2016)
 HV0552
 HV0552                         *CURRENT SURVEY CONTROL
 HV0552  ______________________________________________________________________
 HV0552* NAD 83(1986) POSITION- 38 17 05.     (N) 076 37 05.     (W)   SCALED
 HV0552* NAVD 88 ORTHO HEIGHT -     2.862 (meters)        9.39  (feet) ADJUSTED
 HV0552  ______________________________________________________________________
 HV0552  GEOID HEIGHT    -        -33.945 (meters)                     GEOID18
 HV0552  DYNAMIC HEIGHT  -          2.860 (meters)        9.38  (feet) COMP
 HV0552  MODELED GRAVITY -    980,028.5   (mgal)                       NAVD 88
 HV0552
 HV0552  VERT ORDER      -  FIRST     CLASS II
 HV0552
 HV0552.The horizontal coordinates were scaled from a map and have
 HV0552.an estimated accuracy of +/- 6 seconds.
 HV0552
 HV0552.The orthometric height was determined by differential leveling and
 HV0552.adjusted by the NATIONAL GEODETIC SURVEY
 HV0552.in June 1991.
 HV0552
 HV0552.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0552.GEOID18 height accuracy estimate available here.
 HV0552
 HV0552.Click photographs - Photos may exist for this station.
 HV0552
 HV0552.The dynamic height is computed by dividing the NAVD 88
 HV0552.geopotential number by the normal gravity value computed on the
 HV0552.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0552.degrees latitude (g = 980.6199 gals.).
 HV0552
 HV0552.The modeled gravity was interpolated from observed gravity values.
 HV0552
 HV0552;                    North         East    Units  Estimated Accuracy
 HV0552;SPC MD       -    68,680.      433,420.      MT  (+/- 180 meters Scaled)
 HV0552
 HV0552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH584386(NAD 83)
 HV0552
 HV0552                          SUPERSEDED SURVEY CONTROL
 HV0552
 HV0552  NGVD 29 (11/26/84)    3.103  (m)           10.18   (f) ADJUSTED    1 2
 HV0552
 HV0552.Superseded values are not recommended for survey control.
 HV0552
 HV0552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0552.See file dsdata.pdf to determine how the superseded data were derived.
 HV0552
 HV0552_MARKER: DB = BENCH MARK DISK
 HV0552_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0552_SP_SET: BRIDGE ABUTMENT
 HV0552_STAMPING: H 128 1971
 HV0552_MARK LOGO: CGS
 HV0552_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0552_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0552+SATELLITE: SATELLITE OBSERVATIONS - March 15, 2007
 HV0552
 HV0552  HISTORY     - Date     Condition        Report By
 HV0552  HISTORY     - 1971     MONUMENTED       NGS
 HV0552  HISTORY     - 20070315 GOOD             MDSHA
 HV0552
 HV0552                          STATION DESCRIPTION
 HV0552
 HV0552'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0552'1.2 MI SE FROM LEONARDTOWN.
 HV0552'ABOUT 0.1 MILE NORTH ALONG WASHINGTON STREET FROM THE COURTHOUSE
 HV0552'AT LEONARDTOWN, THENCE 1.1 MILES SOUTHEAST ALONG STATE HIGHWAY
 HV0552'5, 0.1 MILE SOUTHEAST OF THE JUNCTION OF STATE HIGHWAY 471, SET
 HV0552'ON THE TOP OF THE SOUTHWEST END OF THE SOUTHEAST CONCRETE
 HV0552'ABUTMENT FOR A CONCRETE BRIDGE WITH PARTITION UNDER THE HIGHWAY,
 HV0552'30 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, 0.5 FOOT
 HV0552'SOUTH OF THE END OF THE HEAD WALL AND 2 FEET BELOW THE LEVEL
 HV0552'OF THE HIGHWAY.
 HV0552
 HV0552                          STATION RECOVERY (2007)
 HV0552
 HV0552'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 HV0552'DESCRIBED BY MDSHA 2007
 HV0552'1.2 MI SE OF LEONARDTOWN
 HV0552'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 5 AND STATE HIGHWAY
 HV0552'245 IN LEONARDTOWN. PROCEED 1.27 MILES SE ALONG STATE HIGHWAY 5 TO THE
 HV0552'STATION ON THE RIGHT. SET ON THE TOP OF THE SOUTHWEST END OF THE
 HV0552'SOUTHEAST CONCRETE ABUTMENT FOR STATE HIGHWAY 5 BRIDGE OVER GLEBE
 HV0552'RUN.30 FEET SOUTHWEST OF THE CENTERLINE OF STATE HIGHWAY 5, 0.5 FEET
 HV0552'SOUTH OF THE END OF THE HEADWALL AND 2 FEET BELOW THE LEVEL OF THE
 HV0552'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0517 ***********************************************************************
 HV0517  DESIGNATION -  H 129
 HV0517  PID         -  HV0517
 HV0517  STATE/COUNTY-  MD/CHARLES
 HV0517  COUNTRY     -  US
 HV0517  USGS QUAD   -  POPES CREEK (2016)
 HV0517
 HV0517                         *CURRENT SURVEY CONTROL
 HV0517  ______________________________________________________________________
 HV0517* NAD 83(1986) POSITION- 38 24 40.     (N) 076 53 27.     (W)   SCALED
 HV0517* NAVD 88 ORTHO HEIGHT -    40.701 (meters)      133.53  (feet) ADJUSTED
 HV0517  ______________________________________________________________________
 HV0517  GEOID HEIGHT    -        -33.515 (meters)                     GEOID18
 HV0517  DYNAMIC HEIGHT  -         40.676 (meters)      133.45  (feet) COMP
 HV0517  MODELED GRAVITY -    980,007.3   (mgal)                       NAVD 88
 HV0517
 HV0517  VERT ORDER      -  FIRST     CLASS II
 HV0517
 HV0517.The horizontal coordinates were scaled from a map and have
 HV0517.an estimated accuracy of +/- 6 seconds.
 HV0517
 HV0517.The orthometric height was determined by differential leveling and
 HV0517.adjusted by the NATIONAL GEODETIC SURVEY
 HV0517.in June 1991.
 HV0517
 HV0517.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0517.GEOID18 height accuracy estimate available here.
 HV0517
 HV0517.Click photographs - Photos may exist for this station.
 HV0517
 HV0517.The dynamic height is computed by dividing the NAVD 88
 HV0517.geopotential number by the normal gravity value computed on the
 HV0517.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0517.degrees latitude (g = 980.6199 gals.).
 HV0517
 HV0517.The modeled gravity was interpolated from observed gravity values.
 HV0517
 HV0517;                    North         East    Units  Estimated Accuracy
 HV0517;SPC MD       -    82,640.      409,530.      MT  (+/- 180 meters Scaled)
 HV0517
 HV0517_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH349531(NAD 83)
 HV0517
 HV0517                          SUPERSEDED SURVEY CONTROL
 HV0517
 HV0517  NGVD 29 (11/26/84)   40.939  (m)          134.31   (f) ADJUSTED    1 2
 HV0517
 HV0517.Superseded values are not recommended for survey control.
 HV0517
 HV0517.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0517.See file dsdata.pdf to determine how the superseded data were derived.
 HV0517
 HV0517_MARKER: DB = BENCH MARK DISK
 HV0517_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0517+WITH SETTING: INTO GROUND
 HV0517_STAMPING: H 129 1971
 HV0517_MARK LOGO: CGS
 HV0517_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0517+STABILITY: SURFACE MOTION
 HV0517_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0517+SATELLITE: SATELLITE OBSERVATIONS - July 05, 2012
 HV0517
 HV0517  HISTORY     - Date     Condition        Report By
 HV0517  HISTORY     - 1971     MONUMENTED       NGS
 HV0517  HISTORY     - 20120705 GOOD             MDSHA
 HV0517
 HV0517                          STATION DESCRIPTION
 HV0517
 HV0517'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0517'6.1 MI NE FROM NEWBURG.
 HV0517'ABOUT 0.2 MILE NORTHWEST ALONG STATE HIGHWAY 257 FROM THE POST
 HV0517'OFFICE AT NEWBURG, THENCE 2.2 MILES NORTH ALONG U.S. HIGHWAY
 HV0517'301, THENCE 3.7 MILES EAST ALONG STATE HIGHWAY 234, ABOUT 0.15
 HV0517'MILE EAST OF THE JUNCTION OF NOW ABANDONED STATE HIGHWAY 234,
 HV0517'NEAR THE SUMMIT OF A HILL, AT THE NORTHEAST CORNER OF A WOODED
 HV0517'AREA, 38 FEET SOUTHWEST OF THE NORTHWEST CORNER OF A WOODEN
 HV0517'FENCE, 3 FEET WEST OF A POWER POLE, 50 FEET SOUTH OF THE CENTER
 HV0517'LINE OF THE NEW HIGHWAY, 0.2 MILE WEST OF THE INTERSECTION OF
 HV0517'PLANTATION ROAD, 2 FEET BELOW THE LEVEL OF THE HIGHWAY, A DISK
 HV0517'ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED
 HV0517'TO A METAL BASE PLATE.  THE DISK IS FLUSH WITH THE GROUND AND
 HV0517'ENCASED IN A 4 INCH METAL PIPE WHICH PROJECTS 1 INCH ABOVE THE
 HV0517'LEVEL OF THE GROUND.
 HV0517
 HV0517                          STATION RECOVERY (2012)
 HV0517
 HV0517'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2012 (WAC)
 HV0517'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1687 ***********************************************************************
 JV1687  DESIGNATION -  H 13
 JV1687  PID         -  JV1687
 JV1687  STATE/COUNTY-  MD/CARROLL
 JV1687  COUNTRY     -  US
 JV1687  USGS QUAD   -  WESTMINSTER (2016)
 JV1687
 JV1687                         *CURRENT SURVEY CONTROL
 JV1687  ______________________________________________________________________
 JV1687* NAD 83(1986) POSITION- 39 35 06.     (N) 076 58 33.     (W)   SCALED
 JV1687* NAVD 88 ORTHO HEIGHT -   202.900 (meters)      665.68  (feet) ADJUSTED
 JV1687  ______________________________________________________________________
 JV1687  GEOID HEIGHT    -        -32.237 (meters)                     GEOID18
 JV1687  DYNAMIC HEIGHT  -        202.795 (meters)      665.34  (feet) COMP
 JV1687  MODELED GRAVITY -    980,102.5   (mgal)                       NAVD 88
 JV1687
 JV1687  VERT ORDER      -  SECOND    CLASS 0
 JV1687
 JV1687.The horizontal coordinates were scaled from a map and have
 JV1687.an estimated accuracy of +/- 6 seconds.
 JV1687
 JV1687.The orthometric height was determined by differential leveling and
 JV1687.adjusted by the NATIONAL GEODETIC SURVEY
 JV1687.in June 1991.
 JV1687
 JV1687.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1687.GEOID18 height accuracy estimate available here.
 JV1687
 JV1687.Click photographs - Photos may exist for this station.
 JV1687
 JV1687.The dynamic height is computed by dividing the NAVD 88
 JV1687.geopotential number by the normal gravity value computed on the
 JV1687.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1687.degrees latitude (g = 980.6199 gals.).
 JV1687
 JV1687.The modeled gravity was interpolated from observed gravity values.
 JV1687
 JV1687;                    North         East    Units  Estimated Accuracy
 JV1687;SPC MD       -   212,950.      402,080.      MT  (+/- 180 meters Scaled)
 JV1687
 JV1687_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ303835(NAD 83)
 JV1687
 JV1687                          SUPERSEDED SURVEY CONTROL
 JV1687
 JV1687  NGVD 29 (11/26/84)  203.094  (m)          666.32   (f) ADJUSTED    2 0
 JV1687
 JV1687.Superseded values are not recommended for survey control.
 JV1687
 JV1687.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1687.See file dsdata.pdf to determine how the superseded data were derived.
 JV1687
 JV1687_MARKER: DB = BENCH MARK DISK
 JV1687_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1687_STAMPING: H 13 1935
 JV1687_MARK LOGO: CGS
 JV1687_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1687+STABILITY: SURFACE MOTION
 JV1687
 JV1687  HISTORY     - Date     Condition        Report By
 JV1687  HISTORY     - 1935     MONUMENTED       CGS
 JV1687  HISTORY     - 1942     GOOD             CGS
 JV1687
 JV1687                          STATION DESCRIPTION
 JV1687
 JV1687'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1687'1.4 MI E FROM WESTMINSTER.
 JV1687'1.4 MILES EAST ALONG THE WESTERN MARYLAND RAILWAY FROM AN OVERPASS
 JV1687'AT WESTMINSTER, CARROLL COUNTY, ABOUT 100 YARDS NORTHWEST OF THE
 JV1687'WATER TOWER AT CRANBERRY, ABOUT 15 POLES SOUTH OF MILEPOST 32,
 JV1687'ABOUT 54 FEET WEST OF THE CENTER LINE OF THE TRACK, AND 30 FEET
 JV1687'WEST OF THE WEST SIDE OF A TOOL SHED.  A STANDARD DISK, STAMPED
 JV1687'H 13 1935 AND SET IN THE TOP OF A CONCRETE POST.
 JV1687
 JV1687                          STATION RECOVERY (1942)
 JV1687
 JV1687'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV1687'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1361 ***********************************************************************
 JU1361  DESIGNATION -  H 130
 JU1361  PID         -  JU1361
 JU1361  STATE/COUNTY-  MD/CECIL
 JU1361  COUNTRY     -  US
 JU1361  USGS QUAD   -  CECILTON (2016)
 JU1361
 JU1361                         *CURRENT SURVEY CONTROL
 JU1361  ______________________________________________________________________
 JU1361* NAD 83(1986) POSITION- 39 29 24.     (N) 075 51 20.     (W)   SCALED
 JU1361* NAVD 88 ORTHO HEIGHT -    23.099 (meters)       75.78  (feet) ADJUSTED
 JU1361  ______________________________________________________________________
 JU1361  GEOID HEIGHT    -        -33.375 (meters)                     GEOID18
 JU1361  DYNAMIC HEIGHT  -         23.087 (meters)       75.74  (feet) COMP
 JU1361  MODELED GRAVITY -    980,124.1   (mgal)                       NAVD 88
 JU1361
 JU1361  VERT ORDER      -  FIRST     CLASS I
 JU1361
 JU1361.The horizontal coordinates were scaled from a map and have
 JU1361.an estimated accuracy of +/- 6 seconds.
 JU1361
 JU1361.The orthometric height was determined by differential leveling and
 JU1361.adjusted by the NATIONAL GEODETIC SURVEY
 JU1361.in June 1991.
 JU1361
 JU1361.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1361.GEOID18 height accuracy estimate available here.
 JU1361
 JU1361.Click photographs - Photos may exist for this station.
 JU1361
 JU1361.The dynamic height is computed by dividing the NAVD 88
 JU1361.geopotential number by the normal gravity value computed on the
 JU1361.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1361.degrees latitude (g = 980.6199 gals.).
 JU1361
 JU1361.The modeled gravity was interpolated from observed gravity values.
 JU1361
 JU1361;                    North         East    Units  Estimated Accuracy
 JU1361;SPC MD       -   203,020.      498,450.      MT  (+/- 180 meters Scaled)
 JU1361
 JU1361_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ264715(NAD 83)
 JU1361
 JU1361                          SUPERSEDED SURVEY CONTROL
 JU1361
 JU1361  NGVD 29 (11/26/84)   23.341  (m)           76.58   (f) ADJUSTED    1 1
 JU1361
 JU1361.Superseded values are not recommended for survey control.
 JU1361
 JU1361.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1361.See file dsdata.pdf to determine how the superseded data were derived.
 JU1361
 JU1361_MARKER: DB = BENCH MARK DISK
 JU1361_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JU1361+WITH SETTING: INTO GROUND
 JU1361_STAMPING: H 130 1971
 JU1361_MARK LOGO: CGS
 JU1361_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1361+STABILITY: SURFACE MOTION
 JU1361
 JU1361  HISTORY     - Date     Condition        Report By
 JU1361  HISTORY     - 1971     MONUMENTED       NGS
 JU1361  HISTORY     - 19881126 GOOD             USPSQD
 JU1361
 JU1361                          STATION DESCRIPTION
 JU1361
 JU1361'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1361'0.5 MI NW FROM CAYOTS.
 JU1361'ABOUT 0.5 MILE NORTHWEST ALONG TOWN POINT ROAD FROM THE JUNCTION
 JU1361'OF U.S. HIGHWAY 213 AT CAYOTS, NEAR THE JUNCTION OF A BLACK TOP
 JU1361'ROAD LEADING NORTH, NEAR THE SOUTHEAST CORNER OF A STEEL FENCE
 JU1361'AROUND A POWER SUB-STATION, 85 FEET SOUTHWEST OF THE CENTER LINE
 JU1361'OF THE BLACK TOP ROAD LEADING NORTH, 55 1/2 FEET NORTH OF THE
 JU1361'CENTER LINE OF TOWN POINT ROAD, 1.1 FEET SOUTH OF THE SOUTHEAST
 JU1361'CORNER OF THE STEEL FENCE, 1.2 FEET SOUTH OF A WITNESS SIGN WIRED
 JU1361'TO THE FENCE LINE, ABOUT LEVEL WITH THE ROAD, ON THE TOP OF A
 JU1361'4-FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE
 JU1361'PLATE.  THE DISK IS 3 INCHES BELOW THE LEVEL OF THE GROUND AND
 JU1361'ENCASED IN A 6 INCH IRON PIPE THAT IS 2 INCHES BELOW THE LEVEL
 JU1361'OF THE GROUND.
 JU1361
 JU1361                          STATION RECOVERY (1988)
 JU1361
 JU1361'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1361'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1510 ***********************************************************************
 HV1510  DESIGNATION -  H 131
 HV1510  PID         -  HV1510
 HV1510  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1510  COUNTRY     -  US
 HV1510  USGS QUAD   -  DEALE (2016)
 HV1510
 HV1510                         *CURRENT SURVEY CONTROL
 HV1510  ______________________________________________________________________
 HV1510* NAD 83(1986) POSITION- 38 49 42.5    (N) 076 37 09.9    (W)   HD_HELD2
 HV1510* NAVD 88 ORTHO HEIGHT -    49.866 (meters)      163.60  (feet) ADJUSTED
 HV1510  ______________________________________________________________________
 HV1510  GEOID HEIGHT    -        -33.285 (meters)                     GEOID18
 HV1510  DYNAMIC HEIGHT  -         49.837 (meters)      163.51  (feet) COMP
 HV1510  MODELED GRAVITY -    980,056.9   (mgal)                       NAVD 88
 HV1510
 HV1510  VERT ORDER      -  FIRST     CLASS I
 HV1510
 HV1510.The horizontal coordinates were established by autonomous hand held GPS
 HV1510.observations and have an estimated accuracy of +/- 10 meters.
 HV1510
 HV1510.The orthometric height was determined by differential leveling and
 HV1510.adjusted by the NATIONAL GEODETIC SURVEY
 HV1510.in June 1991.
 HV1510
 HV1510.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1510.GEOID18 height accuracy estimate available here.
 HV1510
 HV1510.Click photographs - Photos may exist for this station.
 HV1510
 HV1510.The dynamic height is computed by dividing the NAVD 88
 HV1510.geopotential number by the normal gravity value computed on the
 HV1510.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1510.degrees latitude (g = 980.6199 gals.).
 HV1510
 HV1510.The modeled gravity was interpolated from observed gravity values.
 HV1510
 HV1510;                    North         East    Units  Estimated Accuracy
 HV1510;SPC MD       -   129,034.      433,046.      MT  (+/- 10 meters HH2 GPS)
 HV1510
 HV1510_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5942998987(NAD 83)
 HV1510
 HV1510                          SUPERSEDED SURVEY CONTROL
 HV1510
 HV1510  NGVD 29 (11/26/84)   50.104  (m)          164.38   (f) ADJUSTED    1 1
 HV1510
 HV1510.Superseded values are not recommended for survey control.
 HV1510
 HV1510.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1510.See file dsdata.pdf to determine how the superseded data were derived.
 HV1510
 HV1510_MARKER: DB = BENCH MARK DISK
 HV1510_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV1510+WITH SETTING: INTO GROUND
 HV1510_STAMPING: H 131 1971
 HV1510_MARK LOGO: CGS
 HV1510_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1510+STABILITY: SURFACE MOTION
 HV1510
 HV1510  HISTORY     - Date     Condition        Report By
 HV1510  HISTORY     - 1971     MONUMENTED       NGS
 HV1510  HISTORY     - 20041113 MARK NOT FOUND   USPSQD
 HV1510
 HV1510                          STATION DESCRIPTION
 HV1510
 HV1510'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1510'0.4 MI SW FROM LOTHIAN.
 HV1510'ABOUT 0.2 MILE SOUTHWEST ALONG STATE HIGHWAY 2 FROM THE POST
 HV1510'OFFICE AT LOTHIAN, THENCE 0.2 MILE SOUTHWEST ALONG STATE HIGHWAY 408,
 HV1510'AT THE JUNCTION OF A FARM ROAD WHICH LEADS NORTHEAST, 20 1/2
 HV1510'FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 33 FEET NORTHEAST
 HV1510'OF THE CENTER LINE OF THE ROAD, 1/2 FOOT SOUTHEAST OF A FENCE,
 HV1510'1.0 FOOT SOUTHWEST OF A METAL WITNESS POST, ABOUT LEVEL WITH
 HV1510'THE HIGHWAY, AND ON THE TOP OF A 4-FOOT SECTION OF COPPER
 HV1510'COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK
 HV1510'IS LEVEL WITH THE SURFACE OF THE GROUND AND IS PROTECTED BY A
 HV1510'4-INCH METAL PIPE WHICH PROJECTS 1 INCH.
 HV1510
 HV1510                          STATION RECOVERY (2004)
 HV1510
 HV1510'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1510'HOUSE OWNER STATED THAT ANNE ARUNDEL COUNTY SURVEYORS HAD
 HV1510'UNSUCCESSFULLY SEARCHED FOR MARK
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1594 ***********************************************************************
 HV1594  DESIGNATION -  H 132
 HV1594  PID         -  HV1594
 HV1594  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1594  COUNTRY     -  US
 HV1594  USGS QUAD   -  NORTH BEACH (2016)
 HV1594
 HV1594                         *CURRENT SURVEY CONTROL
 HV1594  ______________________________________________________________________
 HV1594* NAD 83(1986) POSITION- 38 44 51.7    (N) 076 35 33.0    (W)   HD_HELD2
 HV1594* NAVD 88 ORTHO HEIGHT -    38.562 (meters)      126.52  (feet) ADJUSTED
 HV1594  ______________________________________________________________________
 HV1594  GEOID HEIGHT    -        -33.467 (meters)                     GEOID18
 HV1594  DYNAMIC HEIGHT  -         38.539 (meters)      126.44  (feet) COMP
 HV1594  MODELED GRAVITY -    980,051.0   (mgal)                       NAVD 88
 HV1594
 HV1594  VERT ORDER      -  FIRST     CLASS II
 HV1594
 HV1594.The horizontal coordinates were established by autonomous hand held GPS
 HV1594.observations and have an estimated accuracy of +/- 10 meters.
 HV1594
 HV1594.The orthometric height was determined by differential leveling and
 HV1594.adjusted by the NATIONAL GEODETIC SURVEY
 HV1594.in June 1991.
 HV1594
 HV1594.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1594.GEOID18 height accuracy estimate available here.
 HV1594
 HV1594.Click photographs - Photos may exist for this station.
 HV1594
 HV1594.The dynamic height is computed by dividing the NAVD 88
 HV1594.geopotential number by the normal gravity value computed on the
 HV1594.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1594.degrees latitude (g = 980.6199 gals.).
 HV1594
 HV1594.The modeled gravity was interpolated from observed gravity values.
 HV1594
 HV1594;                    North         East    Units  Estimated Accuracy
 HV1594;SPC MD       -   120,077.      435,423.      MT  (+/- 10 meters HH2 GPS)
 HV1594
 HV1594_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6161089982(NAD 83)
 HV1594
 HV1594                          SUPERSEDED SURVEY CONTROL
 HV1594
 HV1594  NGVD 29 (11/26/84)   38.802  (m)          127.30   (f) ADJUSTED    1 2
 HV1594
 HV1594.Superseded values are not recommended for survey control.
 HV1594
 HV1594.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1594.See file dsdata.pdf to determine how the superseded data were derived.
 HV1594
 HV1594_MARKER: DB = BENCH MARK DISK
 HV1594_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV1594+WITH SETTING: INTO GROUND
 HV1594_STAMPING: H 132 1971
 HV1594_MARK LOGO: CGS
 HV1594_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1594+STABILITY: SURFACE MOTION
 HV1594
 HV1594  HISTORY     - Date     Condition        Report By
 HV1594  HISTORY     - 1971     MONUMENTED       NGS
 HV1594  HISTORY     - 1972     GOOD             NGS
 HV1594
 HV1594                          STATION DESCRIPTION
 HV1594
 HV1594'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1594'0.9 MI N FROM FRIENDSHIP.
 HV1594'ABOUT 0.1 MILE WEST ALONG FRIENDSHIP ROAD FROM THE FRIENDSHIP
 HV1594'METHODIST CHURCH AT FRIENDSHIP, THENCE 0.8 MILE NORTH ALONG STATE
 HV1594'HIGHWAY 2, 0.3 MILE SOUTH OF THE INTERSECTION OF STATE HIGHWAY
 HV1594'423, AT THE JUNCTION OF A FARM ROAD LEADING WEST, 136 YARDS
 HV1594'NORTH OF THE APPROXIMATE CENTER OF THE JUNCTION OF STATE HIGHWAY
 HV1594'778 LEADING SOUTHEAST, 40 FEET WEST OF THE CENTER LINE OF THE
 HV1594'HIGHWAY, 26 1/2 FEET SOUTH OF THE CENTER LINE OF THE FARM ROAD,
 HV1594'17.1 FEET SOUTHWEST OF THE SOUTH END OF AN 18-INCH PIPE CULVERT
 HV1594'UNDER THE FARM ROAD, 2 FEET SOUTH OF A POWER LINE POLE, 1 FOOT
 HV1594'NORTH OF A METAL WITNESS POST, 1 FOOT BELOW THE LEVEL OF THE
 HV1594'HIGHWAY, AND ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD FLUSH
 HV1594'WITH THE GROUND AND ENCASED IN A 6 INCH STEEL PIPE THAT PROJECTS
 HV1594'1 INCH ABOVE THE LEVEL OF THE GROUND.  THE ROD IS ATTACHED TO A
 HV1594'METAL BASE PLATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1561 ***********************************************************************
 HV1561  DESIGNATION -  H 133
 HV1561  PID         -  HV1561
 HV1561  STATE/COUNTY-  MD/CALVERT
 HV1561  COUNTRY     -  US
 HV1561  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV1561
 HV1561                         *CURRENT SURVEY CONTROL
 HV1561  ______________________________________________________________________
 HV1561* NAD 83(1986) POSITION- 38 36 21.     (N) 076 34 00.     (W)   SCALED
 HV1561* NAVD 88 ORTHO HEIGHT -    33.806 (meters)      110.91  (feet) ADJUSTED
 HV1561  ______________________________________________________________________
 HV1561  GEOID HEIGHT    -        -33.773 (meters)                     GEOID18
 HV1561  DYNAMIC HEIGHT  -         33.786 (meters)      110.85  (feet) COMP
 HV1561  MODELED GRAVITY -    980,038.0   (mgal)                       NAVD 88
 HV1561
 HV1561  VERT ORDER      -  FIRST     CLASS II
 HV1561
 HV1561.The horizontal coordinates were scaled from a map and have
 HV1561.an estimated accuracy of +/- 6 seconds.
 HV1561
 HV1561.The orthometric height was determined by differential leveling and
 HV1561.adjusted by the NATIONAL GEODETIC SURVEY
 HV1561.in June 1991.
 HV1561
 HV1561.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1561.GEOID18 height accuracy estimate available here.
 HV1561
 HV1561.Click photographs - Photos may exist for this station.
 HV1561
 HV1561.The dynamic height is computed by dividing the NAVD 88
 HV1561.geopotential number by the normal gravity value computed on the
 HV1561.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1561.degrees latitude (g = 980.6199 gals.).
 HV1561
 HV1561.The modeled gravity was interpolated from observed gravity values.
 HV1561
 HV1561;                    North         East    Units  Estimated Accuracy
 HV1561;SPC MD       -   104,340.      437,740.      MT  (+/- 180 meters Scaled)
 HV1561
 HV1561_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH635742(NAD 83)
 HV1561
 HV1561                          SUPERSEDED SURVEY CONTROL
 HV1561
 HV1561  NGVD 29 (11/26/84)   34.050  (m)          111.71   (f) ADJUSTED    1 2
 HV1561
 HV1561.Superseded values are not recommended for survey control.
 HV1561
 HV1561.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1561.See file dsdata.pdf to determine how the superseded data were derived.
 HV1561
 HV1561_MARKER: DB = BENCH MARK DISK
 HV1561_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV1561_STAMPING: H 133 1971
 HV1561_MARK LOGO: CGS
 HV1561_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1561
 HV1561  HISTORY     - Date     Condition        Report By
 HV1561  HISTORY     - 1971     MONUMENTED       NGS
 HV1561  HISTORY     - 1972     GOOD             NGS
 HV1561
 HV1561                          STATION DESCRIPTION
 HV1561
 HV1561'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1561'6.2 MI NE FROM PRINCE FREDERICK.
 HV1561'ABOUT 3.55 MILES NORTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV1561'INTERSECTION OF STATE HIGHWAY 231 AT PRINCE FREDERICK, THENCE
 HV1561'2.65 MILES NORTHEAST ALONG STATE HIGHWAY 263, 1.45 MILES SOUTHWEST
 HV1561'OF THE JUNCTION OF STATE HIGHWAY 261, 39.6 FEET NORTHWEST OF THE
 HV1561'CENTER LINE OF THE HIGHWAY, 37 1/2 FEET NORTHEAST OF THE CENTER LINE
 HV1561'OF A DRIVEWAY, 20 FEET NORTHEAST OF A FENCE CORNER, 3 1/2 FEET
 HV1561'SOUTHWEST OF POWER LINE POLE NO. 68, 1 FOOT SOUTHEAST OF A FENCE
 HV1561'LINE, 1 FOOT NORTHEAST OF A METAL WITNESS POST, ABOUT LEVEL WITH
 HV1561'THE HIGHWAY AND IS A DISK ON THE TOP OF A COPPER COATED STEEL ROD
 HV1561'THAT IS FLUSH WITH THE GROUND AND ENCASED IN A 4 INCH METAL PIPE
 HV1561'THAT PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.  THE ROD
 HV1561'WAS DRIVEN TO REFUSAL AT A DEPTH OF 38.5 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0374 ***********************************************************************
 HV0374  DESIGNATION -  H 134
 HV0374  PID         -  HV0374
 HV0374  STATE/COUNTY-  MD/CALVERT
 HV0374  COUNTRY     -  US
 HV0374  USGS QUAD   -  COVE POINT (2016)
 HV0374
 HV0374                         *CURRENT SURVEY CONTROL
 HV0374  ______________________________________________________________________
 HV0374* NAD 83(1986) POSITION- 38 22 33.     (N) 076 23 29.     (W)   SCALED
 HV0374* NAVD 88 ORTHO HEIGHT -     1.602 (meters)        5.26  (feet) ADJUSTED
 HV0374  ______________________________________________________________________
 HV0374  GEOID HEIGHT    -        -34.481 (meters)                     GEOID18
 HV0374  DYNAMIC HEIGHT  -          1.601 (meters)        5.25  (feet) COMP
 HV0374  MODELED GRAVITY -    980,022.4   (mgal)                       NAVD 88
 HV0374
 HV0374  VERT ORDER      -  FIRST     CLASS II
 HV0374
 HV0374.The horizontal coordinates were scaled from a map and have
 HV0374.an estimated accuracy of +/- 6 seconds.
 HV0374
 HV0374.The orthometric height was determined by differential leveling and
 HV0374.adjusted by the NATIONAL GEODETIC SURVEY
 HV0374.in June 1991.
 HV0374
 HV0374.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0374.GEOID18 height accuracy estimate available here.
 HV0374
 HV0374.Click photographs - Photos may exist for this station.
 HV0374
 HV0374.The dynamic height is computed by dividing the NAVD 88
 HV0374.geopotential number by the normal gravity value computed on the
 HV0374.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0374.degrees latitude (g = 980.6199 gals.).
 HV0374
 HV0374.The modeled gravity was interpolated from observed gravity values.
 HV0374
 HV0374;                    North         East    Units  Estimated Accuracy
 HV0374;SPC MD       -    78,900.      453,180.      MT  (+/- 180 meters Scaled)
 HV0374
 HV0374_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH784484(NAD 83)
 HV0374
 HV0374                          SUPERSEDED SURVEY CONTROL
 HV0374
 HV0374  NGVD 29 (11/26/84)    1.848  (m)            6.06   (f) ADJUSTED    1 2
 HV0374
 HV0374.Superseded values are not recommended for survey control.
 HV0374
 HV0374.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0374.See file dsdata.pdf to determine how the superseded data were derived.
 HV0374
 HV0374_MARKER: DB = BENCH MARK DISK
 HV0374_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0374+WITH SETTING: INTO GROUND
 HV0374_STAMPING: H 134 1971
 HV0374_MARK LOGO: CGS
 HV0374_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0374+STABILITY: SURFACE MOTION
 HV0374
 HV0374  HISTORY     - Date     Condition        Report By
 HV0374  HISTORY     - 1971     MONUMENTED       NGS
 HV0374
 HV0374                          STATION DESCRIPTION
 HV0374
 HV0374'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0374'0.8 MI SW FROM COVE POINT.
 HV0374'ABOUT 0.8 MILE SOUTHWEST ALONG LIGHTHOUSE BLVD AND STATE HIGHWAY
 HV0374'497 FROM THE U.S. COAST GUARD STATION AT COVE POINT, AT THE
 HV0374'JUNCTION OF A PRIVATE ROAD LEADING SOUTH AND A PRIVATE ROAD
 HV0374'LEADING EAST, 75.3 FEET SOUTHEAST OF AND ACROSS THE ROAD EAST
 HV0374'FROM THE CENTER LINE OF THE HIGHWAY, 19 FEET EAST OF THE CENTER
 HV0374'LINE OF THE PRIVATE ROAD, 2 FEET WEST OF POWER LINE POLE NO. 51,
 HV0374'0.7 FOOT EAST OF A METAL WITNESS POST, AND ON THE TOP OF A 4 FOOT
 HV0374'COPPER COATED ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE
 HV0374'DISK IS FLUSH WITH THE GROUND AND ENCASED IN A 6 INCH STEEL PIPE
 HV0374'THAT PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7792 ***********************************************************************
 HV7792  DESIGNATION -  H 135
 HV7792  PID         -  HV7792
 HV7792  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7792  COUNTRY     -  US
 HV7792  USGS QUAD   -  BRISTOL (2016)
 HV7792
 HV7792                         *CURRENT SURVEY CONTROL
 HV7792  ______________________________________________________________________
 HV7792* NAD 83(1986) POSITION- 38 50 44.     (N) 076 43 35.     (W)   SCALED
 HV7792* NAVD 88 ORTHO HEIGHT -    37.731 (meters)      123.79  (feet) ADJUSTED
 HV7792  ______________________________________________________________________
 HV7792  GEOID HEIGHT    -        -32.936 (meters)                     GEOID18
 HV7792  DYNAMIC HEIGHT  -         37.709 (meters)      123.72  (feet) COMP
 HV7792  MODELED GRAVITY -    980,069.6   (mgal)                       NAVD 88
 HV7792
 HV7792  VERT ORDER      -  FIRST     CLASS II
 HV7792
 HV7792.The horizontal coordinates were scaled from a map and have
 HV7792.an estimated accuracy of +/- 6 seconds.
 HV7792
 HV7792.The orthometric height was determined by differential leveling and
 HV7792.adjusted by the NATIONAL GEODETIC SURVEY
 HV7792.in June 1991.
 HV7792
 HV7792.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7792.GEOID18 height accuracy estimate available here.
 HV7792
 HV7792.Click photographs - Photos may exist for this station.
 HV7792
 HV7792.The dynamic height is computed by dividing the NAVD 88
 HV7792.geopotential number by the normal gravity value computed on the
 HV7792.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7792.degrees latitude (g = 980.6199 gals.).
 HV7792
 HV7792.The modeled gravity was interpolated from observed gravity values.
 HV7792
 HV7792;                    North         East    Units  Estimated Accuracy
 HV7792;SPC MD       -   130,900.      423,750.      MT  (+/- 180 meters Scaled)
 HV7792
 HV7792_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ501010(NAD 83)
 HV7792
 HV7792                          SUPERSEDED SURVEY CONTROL
 HV7792
 HV7792  NGVD 29 (11/26/84)   37.965  (m)          124.56   (f) ADJUSTED    1 2
 HV7792
 HV7792.Superseded values are not recommended for survey control.
 HV7792
 HV7792.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7792.See file dsdata.pdf to determine how the superseded data were derived.
 HV7792
 HV7792_MARKER: DV = VERTICAL CONTROL DISK
 HV7792_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV7792+WITH SETTING: INTO GROUND
 HV7792_STAMPING: H 135 1975
 HV7792_MARK LOGO: NGS
 HV7792_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7792+STABILITY: SURFACE MOTION
 HV7792
 HV7792  HISTORY     - Date     Condition        Report By
 HV7792  HISTORY     - 1975     MONUMENTED       NGS
 HV7792
 HV7792                          STATION DESCRIPTION
 HV7792
 HV7792'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7792'1.6 MI NORTH FROM UPPER MARLBORO.
 HV7792'1.6 MILES NORTH ALONG U.S. HIGHWAY 301 FROM THE JUNCTION OF STATE
 HV7792'HIGHWAY 408 AND U.S. HIGHWAY 301 AT UPPER MARLBORO. NEAR A STATE OF
 HV7792'MARYLAND TRUCK WEIGHING STATION. .05 MILE NORTH OF THE WEIGH STATION
 HV7792'45.7 FEET EAST OF THE CENTERLINE OF THE NORTHBOUND LANE OF U.S.
 HV7792'HIGHWAY 301. 87.0 FEET NORTH OF HIGHWAY MILE POST NO 43. 80 FEET NORTH
 HV7792'OF A STREET LIGHT POLE. 4.3 FEET EAST OF POWER POLE NO 216725.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9584 ***********************************************************************
 HV9584  DESIGNATION -  H 136 RESET
 HV9584  PID         -  HV9584
 HV9584  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV9584  COUNTRY     -  US
 HV9584  USGS QUAD   -  BOWIE (2016)
 HV9584
 HV9584                         *CURRENT SURVEY CONTROL
 HV9584  ______________________________________________________________________
 HV9584* NAD 83(1986) POSITION- 38 59 21.1    (N) 076 42 18.6    (W)   HD_HELD2
 HV9584* NAVD 88 ORTHO HEIGHT -    13.962 (meters)       45.81  (feet) ADJUSTED
 HV9584  ______________________________________________________________________
 HV9584  GEOID HEIGHT    -        -32.767 (meters)                     GEOID18
 HV9584  DYNAMIC HEIGHT  -         13.954 (meters)       45.78  (feet) COMP
 HV9584  MODELED GRAVITY -    980,082.3   (mgal)                       NAVD 88
 HV9584
 HV9584  VERT ORDER      -  SECOND    CLASS I
 HV9584
 HV9584.The horizontal coordinates were established by autonomous hand held GPS
 HV9584.observations and have an estimated accuracy of +/- 10 meters.
 HV9584
 HV9584.The orthometric height was determined by differential leveling and
 HV9584.adjusted by the NATIONAL GEODETIC SURVEY
 HV9584.in September 1993.
 HV9584
 HV9584.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9584.GEOID18 height accuracy estimate available here.
 HV9584
 HV9584.Click photographs - Photos may exist for this station.
 HV9584
 HV9584.The dynamic height is computed by dividing the NAVD 88
 HV9584.geopotential number by the normal gravity value computed on the
 HV9584.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9584.degrees latitude (g = 980.6199 gals.).
 HV9584
 HV9584.The modeled gravity was interpolated from observed gravity values.
 HV9584
 HV9584;                    North         East    Units  Estimated Accuracy
 HV9584;SPC MD       -   146,848.      425,543.      MT  (+/- 10 meters HH2 GPS)
 HV9584
 HV9584_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5231916960(NAD 83)
 HV9584
 HV9584                          SUPERSEDED SURVEY CONTROL
 HV9584
 HV9584  NGVD 29 (09/17/93)   14.199  (m)           46.58   (f) ADJUSTED    2 1
 HV9584
 HV9584.Superseded values are not recommended for survey control.
 HV9584
 HV9584.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9584.See file dsdata.pdf to determine how the superseded data were derived.
 HV9584
 HV9584_MARKER: DV = VERTICAL CONTROL DISK
 HV9584_SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
 HV9584_SP_SET: BRIDGE ABUTMENT
 HV9584_STAMPING: H 136 RESET 1993
 HV9584_MARK LOGO: NGS
 HV9584_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV9584_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV9584_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV9584+SATELLITE: SATELLITE OBSERVATIONS - June 23, 2008
 HV9584
 HV9584  HISTORY     - Date     Condition        Report By
 HV9584  HISTORY     - 1993     MONUMENTED       NGS
 HV9584  HISTORY     - 20010128 GOOD             USPSQD
 HV9584  HISTORY     - 20020927 GOOD             INDIV
 HV9584  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV9584  HISTORY     - 20080623 GOOD             JARICE
 HV9584
 HV9584                          STATION DESCRIPTION
 HV9584
 HV9584'DESCRIBED BY NATIONAL GEODETIC SURVEY 1993
 HV9584'2.7 MILES (4.3 KM) NORTH ALONG STATE HIGHWAY 3 FROM THE JUNCTION OF
 HV9584'U.S. HIGHWAY 301 STATE HIGHWAY 3 AND U.S. HIGHWAY 50 AT BOWIE.
 HV9584'0.30 MILE (0.48 KM) SOUTH OF HIGHWAY MILE POST NO 3.  AT THE ANNE
 HV9584'ARUNDEL AND PRINCE GEORGES COUNTY LINE.  THE MARK IS SET IN THE
 HV9584'BRIDGE ABUTMENT AT THE NORTHEAST CORNER OF THE BRIDGE ACROSS THE
 HV9584'PATUXENT RIVER ABOUT 5 FEET (1.5 M) BELOW THE BRIDGE SURFACE.
 HV9584
 HV9584                          STATION RECOVERY (2001)
 HV9584
 HV9584'RECOVERY NOTE BY US POWER SQUADRON 2001 (CRA)
 HV9584'RECOVERED IN GOOD CONDITION.
 HV9584
 HV9584                          STATION RECOVERY (2002)
 HV9584
 HV9584'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 (RJB)
 HV9584'RECOVERED IN GOOD CONDITION
 HV9584
 HV9584                          STATION RECOVERY (2003)
 HV9584
 HV9584'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV9584'MARK NOT FOUND.
 HV9584
 HV9584                          STATION RECOVERY (2008)
 HV9584
 HV9584'RECOVERY NOTE BY J A RICE INC 2008 (MRA)
 HV9584'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3825 ***********************************************************************
 JV3825  DESIGNATION -  H 137
 JV3825  PID         -  JV3825
 JV3825  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV3825  COUNTRY     -  US
 JV3825  USGS QUAD   -  ODENTON (2016)
 JV3825
 JV3825                         *CURRENT SURVEY CONTROL
 JV3825  ______________________________________________________________________
 JV3825* NAD 83(1986) POSITION- 39 06 47.     (N) 076 37 52.     (W)   SCALED
 JV3825* NAVD 88 ORTHO HEIGHT -    30.790 (meters)      101.02  (feet) ADJUSTED
 JV3825  ______________________________________________________________________
 JV3825  GEOID HEIGHT    -        -32.845 (meters)                     GEOID18
 JV3825  DYNAMIC HEIGHT  -         30.773 (meters)      100.96  (feet) COMP
 JV3825  MODELED GRAVITY -    980,083.8   (mgal)                       NAVD 88
 JV3825
 JV3825  VERT ORDER      -  FIRST     CLASS II
 JV3825
 JV3825.The horizontal coordinates were scaled from a map and have
 JV3825.an estimated accuracy of +/- 6 seconds.
 JV3825
 JV3825.The orthometric height was determined by differential leveling and
 JV3825.adjusted by the NATIONAL GEODETIC SURVEY
 JV3825.in June 1991.
 JV3825
 JV3825.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3825.GEOID18 height accuracy estimate available here.
 JV3825
 JV3825.Click photographs - Photos may exist for this station.
 JV3825
 JV3825.The dynamic height is computed by dividing the NAVD 88
 JV3825.geopotential number by the normal gravity value computed on the
 JV3825.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3825.degrees latitude (g = 980.6199 gals.).
 JV3825
 JV3825.The modeled gravity was interpolated from observed gravity values.
 JV3825
 JV3825;                    North         East    Units  Estimated Accuracy
 JV3825;SPC MD       -   160,620.      431,900.      MT  (+/- 180 meters Scaled)
 JV3825
 JV3825_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ589305(NAD 83)
 JV3825
 JV3825                          SUPERSEDED SURVEY CONTROL
 JV3825
 JV3825  NGVD 29 (11/26/84)   31.027  (m)          101.79   (f) ADJUSTED    1 2
 JV3825
 JV3825.Superseded values are not recommended for survey control.
 JV3825
 JV3825.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3825.See file dsdata.pdf to determine how the superseded data were derived.
 JV3825
 JV3825_MARKER: DV = VERTICAL CONTROL DISK
 JV3825_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV3825+WITH SETTING: INTO GROUND
 JV3825_STAMPING: H 137 1975
 JV3825_MARK LOGO: NGS
 JV3825_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3825+STABILITY: SURFACE MOTION
 JV3825
 JV3825  HISTORY     - Date     Condition        Report By
 JV3825  HISTORY     - 1975     MONUMENTED       NGS
 JV3825
 JV3825                          STATION DESCRIPTION
 JV3825
 JV3825'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 JV3825'1 MI NORTH FROM BENFIELD.
 JV3825'1.0 MILE NORTH ALONG STATE HIGHWAY 3 FROM ANNE ARUNDEL POLICE AND
 JV3825'FIRE DEPARTMENT HEADQUARTERS. .25 MILE SOUTH OF MILE POST 13. 38.7
 JV3825'FEET EAST OF THE CENTERLINE OF THE NORTHBOUND LANE OF STATE HIGHWAY 3.
 JV3825'138.8 FEET SOUTH OF POWER POLE (WITH TRANSFORMER) NO 292899. 81.5 FEET
 JV3825'NORTH OF POWER POLE NO 292897. 2.3 FEET SOUTH OF HIGHWAY SIGN SAYING
 JV3825'BUSINESS MD 3 GLEN BURNIE EXIT 1 MILE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1549 ***********************************************************************
 JV1549  DESIGNATION -  H 14
 JV1549  PID         -  JV1549
 JV1549  STATE/COUNTY-  MD/BALTIMORE
 JV1549  COUNTRY     -  US
 JV1549  USGS QUAD   -  HEREFORD (2016)
 JV1549
 JV1549                         *CURRENT SURVEY CONTROL
 JV1549  ______________________________________________________________________
 JV1549* NAD 83(1986) POSITION- 39 32 21.     (N) 076 38 18.     (W)   SCALED
 JV1549* NAVD 88 ORTHO HEIGHT -    77.380 (meters)      253.87  (feet) ADJUSTED
 JV1549  ______________________________________________________________________
 JV1549  GEOID HEIGHT    -        -32.354 (meters)                     GEOID18
 JV1549  DYNAMIC HEIGHT  -         77.341 (meters)      253.74  (feet) COMP
 JV1549  MODELED GRAVITY -    980,125.1   (mgal)                       NAVD 88
 JV1549
 JV1549  VERT ORDER      -  SECOND    CLASS 0
 JV1549
 JV1549.The horizontal coordinates were scaled from a map and have
 JV1549.an estimated accuracy of +/- 6 seconds.
 JV1549
 JV1549.The orthometric height was determined by differential leveling and
 JV1549.adjusted by the NATIONAL GEODETIC SURVEY
 JV1549.in June 1991.
 JV1549
 JV1549.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1549.GEOID18 height accuracy estimate available here.
 JV1549
 JV1549.Click photographs - Photos may exist for this station.
 JV1549
 JV1549.The dynamic height is computed by dividing the NAVD 88
 JV1549.geopotential number by the normal gravity value computed on the
 JV1549.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1549.degrees latitude (g = 980.6199 gals.).
 JV1549
 JV1549.The modeled gravity was interpolated from observed gravity values.
 JV1549
 JV1549;                    North         East    Units  Estimated Accuracy
 JV1549;SPC MD       -   207,930.      431,090.      MT  (+/- 180 meters Scaled)
 JV1549
 JV1549_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ592778(NAD 83)
 JV1549
 JV1549                          SUPERSEDED SURVEY CONTROL
 JV1549
 JV1549  NGVD 29 (11/26/84)   77.578  (m)          254.52   (f) ADJUSTED    2 0
 JV1549
 JV1549.Superseded values are not recommended for survey control.
 JV1549
 JV1549.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1549.See file dsdata.pdf to determine how the superseded data were derived.
 JV1549
 JV1549_MARKER: DB = BENCH MARK DISK
 JV1549_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1549_STAMPING: H 14 1935
 JV1549_MARK LOGO: CGS
 JV1549_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1549+STABILITY: SURFACE MOTION
 JV1549
 JV1549  HISTORY     - Date     Condition        Report By
 JV1549  HISTORY     - 1935     MONUMENTED       CGS
 JV1549  HISTORY     - 1959     GOOD             CGS
 JV1549  HISTORY     - 20010827 MARK NOT FOUND   MDSHA
 JV1549
 JV1549                          STATION DESCRIPTION
 JV1549
 JV1549'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1549'AT SPARKS.
 JV1549'AT SPARKS, ALONG THE PENNSYLVANIA RAILROAD, 165 FEET SOUTH OF THE
 JV1549'CENTER LINE OF THE SPARKS ROAD CROSSING, 17.5 FEET WEST OF THE
 JV1549'WEST RAIL, 11.5 FEET NORTH-NORTHWEST OF A TELEGRAPH POLE, 1 FOOT
 JV1549'BELOW THE LEVEL OF THE RAIL AND SET IN THE TOP OF A CONCRETE POST
 JV1549'PROJECTING 6 INCHES ABOVE THE LEVEL OF THE GROUND.
 JV1549
 JV1549                          STATION RECOVERY (2001)
 JV1549
 JV1549'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV1549'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1032 ***********************************************************************
 HU1032  DESIGNATION -  H 141
 HU1032  PID         -  HU1032
 HU1032  STATE/COUNTY-  MD/WORCESTER
 HU1032  COUNTRY     -  US
 HU1032  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1032
 HU1032                         *CURRENT SURVEY CONTROL
 HU1032  ______________________________________________________________________
 HU1032* NAD 83(1986) POSITION- 38 08 42.     (N) 075 10 31.     (W)   SCALED
 HU1032* NAVD 88 ORTHO HEIGHT -     1.627 (meters)        5.34  (feet) ADJUSTED
 HU1032  ______________________________________________________________________
 HU1032  GEOID HEIGHT    -        -36.280 (meters)                     GEOID18
 HU1032  DYNAMIC HEIGHT  -          1.626 (meters)        5.33  (feet) COMP
 HU1032  MODELED GRAVITY -    979,987.0   (mgal)                       NAVD 88
 HU1032
 HU1032  VERT ORDER      -  SECOND    CLASS I
 HU1032
 HU1032.The horizontal coordinates were scaled from a map and have
 HU1032.an estimated accuracy of +/- 6 seconds.
 HU1032
 HU1032.The orthometric height was determined by differential leveling and
 HU1032.adjusted by the NATIONAL GEODETIC SURVEY
 HU1032.in June 1991.
 HU1032
 HU1032.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1032.GEOID18 height accuracy estimate available here.
 HU1032
 HU1032.Click photographs - Photos may exist for this station.
 HU1032
 HU1032.The dynamic height is computed by dividing the NAVD 88
 HU1032.geopotential number by the normal gravity value computed on the
 HU1032.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1032.degrees latitude (g = 980.6199 gals.).
 HU1032
 HU1032.The modeled gravity was interpolated from observed gravity values.
 HU1032
 HU1032;                    North         East    Units  Estimated Accuracy
 HU1032;SPC MD       -    54,700.      559,950.      MT  (+/- 180 meters Scaled)
 HU1032
 HU1032_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH846219(NAD 83)
 HU1032
 HU1032                          SUPERSEDED SURVEY CONTROL
 HU1032
 HU1032  NGVD 29 (11/26/84)    1.868  (m)            6.13   (f) ADJUSTED    2 1
 HU1032
 HU1032.Superseded values are not recommended for survey control.
 HU1032
 HU1032.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1032.See file dsdata.pdf to determine how the superseded data were derived.
 HU1032
 HU1032_MARKER: DV = VERTICAL CONTROL DISK
 HU1032_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1032+WITH SETTING: INTO GROUND
 HU1032_STAMPING: H 141 1977
 HU1032_MARK LOGO: NGS
 HU1032_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1032+STABILITY: SURFACE MOTION
 HU1032
 HU1032  HISTORY     - Date     Condition        Report By
 HU1032  HISTORY     - 1977     MONUMENTED       NGS
 HU1032  HISTORY     - 1988     GOOD             USPSQD
 HU1032  HISTORY     - 20150309 MARK NOT FOUND   ARCSHE
 HU1032
 HU1032                          STATION DESCRIPTION
 HU1032
 HU1032'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1032'IN ASSATEAGUE ISLAND.
 HU1032'6.8 MILES SOUTHWEST ALONG A PAVED AND DIRT ROAD FROM THE JUNCTION
 HU1032'OF STATE HIGHWAY 611 ON ASSATEAGUE ISLAND, 0.2 MILE NORTHEAST OF JEEP
 HU1032'TRAIL 4, 104 FEET SOUTH OF A POWERLINE POLE, 83 FEET NORTH OF AND
 HU1032'ACOR
 HU1032'ACROSS THE ROAD FROM THE NORTHWEST LEG OF A SIGN PHONE 1/2 MILE,
 HU1032'27 FEET NORTHWEST OF THE CENTERLINE OF THE ROAD, AND 4 FEET NORTH-
 HU1032'WEST OF A CABLE GUARD.
 HU1032
 HU1032                          STATION RECOVERY (1988)
 HU1032
 HU1032'RECOVERY NOTE BY US POWER SQUADRON 1988 (RHK)
 HU1032'RECOVERED IN GOOD CONDITION.
 HU1032
 HU1032                          STATION RECOVERY (2015)
 HU1032
 HU1032'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 HU1032'NONE OF THE ORIGINAL REFERENCE OBJECTS STILL EXIST.  AN ATTEMPT WAS
 HU1032'MADE TO RECOVERY THE MARK WITH A MAGNETIC LOCATOR, BUT WITH NO
 HU1032'SUCCESS.  THE MARK MAY BE COVERED BY UP TO 3 FT (0.9 M) OF SAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3875 ***********************************************************************
 JV3875  DESIGNATION -  H 143
 JV3875  PID         -  JV3875
 JV3875  STATE/COUNTY-  MD/FREDERICK
 JV3875  COUNTRY     -  US
 JV3875  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3875
 JV3875                         *CURRENT SURVEY CONTROL
 JV3875  ______________________________________________________________________
 JV3875* NAD 83(1986) POSITION- 39 19 44.     (N) 077 33 11.     (W)   SCALED
 JV3875* NAVD 88 ORTHO HEIGHT -   131.650 (meters)      431.92  (feet) ADJUSTED
 JV3875  ______________________________________________________________________
 JV3875  GEOID HEIGHT    -        -32.860 (meters)                     GEOID18
 JV3875  DYNAMIC HEIGHT  -        131.578 (meters)      431.69  (feet) COMP
 JV3875  MODELED GRAVITY -    980,078.7   (mgal)                       NAVD 88
 JV3875
 JV3875  VERT ORDER      -  FIRST     CLASS II
 JV3875
 JV3875.The horizontal coordinates were scaled from a map and have
 JV3875.an estimated accuracy of +/- 6 seconds.
 JV3875
 JV3875.The orthometric height was determined by differential leveling and
 JV3875.adjusted by the NATIONAL GEODETIC SURVEY
 JV3875.in June 1991.
 JV3875
 JV3875.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3875.GEOID18 height accuracy estimate available here.
 JV3875
 JV3875.Click photographs - Photos may exist for this station.
 JV3875
 JV3875.The dynamic height is computed by dividing the NAVD 88
 JV3875.geopotential number by the normal gravity value computed on the
 JV3875.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3875.degrees latitude (g = 980.6199 gals.).
 JV3875
 JV3875.The modeled gravity was interpolated from observed gravity values.
 JV3875
 JV3875;                    North         East    Units  Estimated Accuracy
 JV3875;SPC MD       -   184,660.      352,320.      MT  (+/- 180 meters Scaled)
 JV3875
 JV3875_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ799563(NAD 83)
 JV3875
 JV3875                          SUPERSEDED SURVEY CONTROL
 JV3875
 JV3875.No superseded survey control is available for this station.
 JV3875
 JV3875_MARKER: DV = VERTICAL CONTROL DISK
 JV3875_SETTING: 66 = SET IN ROCK OUTCROP
 JV3875_STAMPING: H 143 1979
 JV3875_MARK LOGO: NGS
 JV3875_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3875_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3875+STABILITY: POSITION/ELEVATION WELL
 JV3875_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3875+SATELLITE: SATELLITE OBSERVATIONS - November 05, 2001
 JV3875
 JV3875  HISTORY     - Date     Condition        Report By
 JV3875  HISTORY     - 1979     MONUMENTED       NGS
 JV3875  HISTORY     - 20011105 GOOD             MDSHA
 JV3875
 JV3875                          STATION DESCRIPTION
 JV3875
 JV3875'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3875'4.4 MI NORTH FROM POINT OF ROCKS.
 JV3875'1.0 MILE NORTHEAST ALONG STATE ROUTE 15 FROM THE JUNCTION OF STATE
 JV3875'ROUTE 28 IN POINT OF ROCKS TO THE INTERSECTION OF STATE ROUTE 464,
 JV3875'THENCE 3.4 MILES NORTHWEST ALONG ROUTE 464 TO THE JUNCTION OF LANDER
 JV3875'ROAD, THENCE 0.1 MILE NORTHEAST ALONG LANDER ROAD TO THE MARK ON
 JV3875'THE RIGHT, SET IN BEDROCK IN AN OPEN PASTURE, DIRECTLY ACROSS
 JV3875'THE ROAD AND IN LINE WITH POWER POLE 3, 100 FEET SOUTHEAST AND ACROSS
 JV3875'THE ROAD FROM POWER POLE 3 , 62 FEET SOUTHEAST OF THE CENTERLINE OF
 JV3875'THE ROAD, 31 FEET SOUTHEAST OF A WIRE FENCE.
 JV3875'THE MARK IS 1 FT  NE FROM A WITNESS POST.
 JV3875'THE MARK IS 5 FT ABOVE ROAD.
 JV3875
 JV3875                          STATION RECOVERY (2001)
 JV3875
 JV3875'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV3875'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3941 ***********************************************************************
 JV3941  DESIGNATION -  H 146
 JV3941  PID         -  JV3941
 JV3941  STATE/COUNTY-  MD/WASHINGTON
 JV3941  COUNTRY     -  US
 JV3941  USGS QUAD   -  KEEDYSVILLE (2016)
 JV3941
 JV3941                         *CURRENT SURVEY CONTROL
 JV3941  ______________________________________________________________________
 JV3941* NAD 83(1986) POSITION- 39 25 11.1    (N) 077 39 53.0    (W)   HD_HELD2
 JV3941* NAVD 88 ORTHO HEIGHT -   235.461 (meters)      772.51  (feet) ADJUSTED
 JV3941  ______________________________________________________________________
 JV3941  GEOID HEIGHT    -        -33.427 (meters)                     GEOID18
 JV3941  DYNAMIC HEIGHT  -        235.322 (meters)      772.05  (feet) COMP
 JV3941  MODELED GRAVITY -    980,032.2   (mgal)                       NAVD 88
 JV3941
 JV3941  VERT ORDER      -  FIRST     CLASS II
 JV3941
 JV3941.The horizontal coordinates were established by autonomous hand held GPS
 JV3941.observations and have an estimated accuracy of +/- 10 meters.
 JV3941
 JV3941.The orthometric height was determined by differential leveling and
 JV3941.adjusted by the NATIONAL GEODETIC SURVEY
 JV3941.in June 1991.
 JV3941
 JV3941.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3941.GEOID18 height accuracy estimate available here.
 JV3941
 JV3941.Click photographs - Photos may exist for this station.
 JV3941
 JV3941.The dynamic height is computed by dividing the NAVD 88
 JV3941.geopotential number by the normal gravity value computed on the
 JV3941.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3941.degrees latitude (g = 980.6199 gals.).
 JV3941
 JV3941.The modeled gravity was interpolated from observed gravity values.
 JV3941
 JV3941;                    North         East    Units  Estimated Accuracy
 JV3941;SPC MD       -   194,814.      342,760.      MT  (+/- 10 meters HH2 GPS)
 JV3941
 JV3941_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7061066746(NAD 83)
 JV3941
 JV3941                          SUPERSEDED SURVEY CONTROL
 JV3941
 JV3941.No superseded survey control is available for this station.
 JV3941
 JV3941_MARKER: DV = VERTICAL CONTROL DISK
 JV3941_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3941_STAMPING: H 146 1979
 JV3941_MARK LOGO: NGS
 JV3941_PROJECTION: FLUSH
 JV3941_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3941_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3941+SATELLITE: SATELLITE OBSERVATIONS - November 28, 2010
 JV3941_ROD/PIPE-DEPTH: 2.7 meters
 JV3941
 JV3941  HISTORY     - Date     Condition        Report By
 JV3941  HISTORY     - 1979     MONUMENTED       NGS
 JV3941  HISTORY     - 1988     GOOD             USPSQD
 JV3941  HISTORY     - 20101128 GOOD             GEOCAC
 JV3941
 JV3941                          STATION DESCRIPTION
 JV3941
 JV3941'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3941'6.65 MI NE FROM WEVERTON.
 JV3941'6.65 MILES NORTHEAST ALONG STATE HIGHWAY 67 FROM THE NORTH END OF THE
 JV3941'HIGHWAY 67 OVERPASS BRIDGE OVER U.S. HIGHWAY 340 TO THE MARK ON THE
 JV3941'LEFT, ALSO 5.65 MILES SOUTHEAST OF KEEDYSVILLE, 91 FEET WEST OF THE
 JV3941'CENTER LINE OF U.S. HIGHWAY 67, 91 FEET EAST OF THE CENTER LINE OF
 JV3941'TRECO ROAD, 51 FEET SOUTHEAST OF POWER POLE NUMBER 46, 10.5 FEET
 JV3941'SOUTH SOUTHEAST OF A NOT A THRU ROAD SIGN, 8 FEET SOUTH OF A STANDARD
 JV3941'METAL WITNESS POST, 2 FEET SOUTHEAST OF POWER POLE NUMBER 239.
 JV3941'THE MARK IS 8 FT  S FROM A WITNESS POST.
 JV3941'THE MARK IS 3 FT ABOVE HIGHWAY.
 JV3941
 JV3941                          STATION RECOVERY (1988)
 JV3941
 JV3941'RECOVERY NOTE BY US POWER SQUADRON 1988 (WPG)
 JV3941'RECOVERED IN GOOD CONDITION.
 JV3941
 JV3941                          STATION RECOVERY (2010)
 JV3941
 JV3941'RECOVERY NOTE BY GEOCACHING 2010 (MFM)
 JV3941'RECOVERED IN GOOD CONDITION. NEW TO REACH FOLLOWS.
 JV3941'
 JV3941'FROM THE SOUTH END OF MD67 OVER US340, HEAD NORTH ON MD67 FOR 6.65
 JV3941'MILES TO TREGO ROAD ON THE LEFT. TURN ONTO TREGO ROAD, AND THEN MAKE
 JV3941'AN IMMEDIATE RIGHT (NORTH) ON AN UNSIGNED ROAD. TRAVEL ABOUT 100 FEET
 JV3941'TO THE STATION ON THE RIGHT. STATION IS 53FT SE OF NEW POWER POLE
 JV3941'MARKED H27237, 3FT SE OF OLD TELEPHONE POLE NUMBERED 239, AND APPROX
 JV3941'26FT SE OF UNSIGNED ROAD.
 JV3941'DO NOT CONFUSE STATION WITH A COUNTY MARKER, APPROXIMATELY 130 FEET SE
 JV3941'OF STATION NEARER THE INTERSECTION OF MD67 AND TREGO ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3848 ***********************************************************************
 JV3848  DESIGNATION -  H 147
 JV3848  PID         -  JV3848
 JV3848  STATE/COUNTY-  MD/MONTGOMERY
 JV3848  COUNTRY     -  US
 JV3848  USGS QUAD   -  ROCKVILLE (2016)
 JV3848
 JV3848                         *CURRENT SURVEY CONTROL
 JV3848  ______________________________________________________________________
 JV3848* NAD 83(1986) POSITION- 39 05 56.5    (N) 077 09 15.5    (W)   HD_HELD2
 JV3848* NAVD 88 ORTHO HEIGHT -   138.561 (meters)      454.60  (feet) ADJUSTED
 JV3848  ______________________________________________________________________
 JV3848  GEOID HEIGHT    -        -31.722 (meters)                     GEOID18
 JV3848  DYNAMIC HEIGHT  -        138.489 (meters)      454.36  (feet) COMP
 JV3848  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 JV3848
 JV3848  VERT ORDER      -  FIRST     CLASS II
 JV3848
 JV3848.The horizontal coordinates were established by autonomous hand held GPS
 JV3848.observations and have an estimated accuracy of +/- 10 meters.
 JV3848
 JV3848.The orthometric height was determined by differential leveling and
 JV3848.adjusted by the NATIONAL GEODETIC SURVEY
 JV3848.in June 1991.
 JV3848
 JV3848.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3848.GEOID18 height accuracy estimate available here.
 JV3848
 JV3848.Click photographs - Photos may exist for this station.
 JV3848
 JV3848.The dynamic height is computed by dividing the NAVD 88
 JV3848.geopotential number by the normal gravity value computed on the
 JV3848.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3848.degrees latitude (g = 980.6199 gals.).
 JV3848
 JV3848.The modeled gravity was interpolated from observed gravity values.
 JV3848
 JV3848;                    North         East    Units  Estimated Accuracy
 JV3848;SPC MD       -   159,011.      386,652.      MT  (+/- 10 meters HH2 GPS)
 JV3848
 JV3848_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1370629975(NAD 83)
 JV3848
 JV3848                          SUPERSEDED SURVEY CONTROL
 JV3848
 JV3848.No superseded survey control is available for this station.
 JV3848
 JV3848_MARKER: DV = VERTICAL CONTROL DISK
 JV3848_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3848_STAMPING: H 147 1979
 JV3848_MARK LOGO: NGS
 JV3848_PROJECTION: RECESSED 10 CENTIMETERS
 JV3848_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV3848_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3848_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3848+SATELLITE: SATELLITE OBSERVATIONS - April 05, 2005
 JV3848_ROD/PIPE-DEPTH: 4.57 meters
 JV3848
 JV3848  HISTORY     - Date     Condition        Report By
 JV3848  HISTORY     - 1979     MONUMENTED       NGS
 JV3848  HISTORY     - 20020125 GOOD             MDSHA
 JV3848  HISTORY     - 20050405 GOOD             USPSQD
 JV3848  HISTORY     - 20100128 GOOD             NGS
 JV3848
 JV3848                          STATION DESCRIPTION
 JV3848
 JV3848'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3848'2.05 MI SE FROM GAITHERSBURG.
 JV3848'2.05 MILES SOUTHEAST ALONG STATE ROUTE 355 FROM THE INTERSECTION OF
 JV3848'SHADY GROVE ROAD IN GAITHERSBURG TO THE MARK ON THE RIGHT, SET
 JV3848'DIRECTLY ACROSS THE HIGHWAY FROM THE JUNCTION OF WESTMORE ROAD,
 JV3848'3.1 MILES NORTHWEST OF THE JUNCTION OF MONTROSE ROAD IN ROCKVILLE,
 JV3848'11.8 FEET WEST OF THE WEST CURB OF ROUTE 355, 3 FEET WEST OF A LARGE
 JV3848'POWER POLE, AND 2.7 FEET WEST OF THE WEST SIDE OF THE SIDEWALK.
 JV3848'THE MARK IS 1 FT  S FROM A WITNESS POST.
 JV3848'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JV3848
 JV3848                          STATION RECOVERY (2002)
 JV3848
 JV3848'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV3848'RECOVERED AS DESCRIBED. THE POWER POLE IS NUMBER 756460-9923.
 JV3848
 JV3848                          STATION RECOVERY (2005)
 JV3848
 JV3848'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV3848'RECOVERED IN GOOD CONDITION.
 JV3848
 JV3848                          STATION RECOVERY (2010)
 JV3848
 JV3848'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2010 (DRD)
 JV3848'MARK IS NOW RECESSED 0.35M (1.2 FT) UNDER A WSSC CAST METER BOX
 JV3848'STAMPED SURVEY CONTROL AND IN A PVC SLEEVE TOPPED WITH A THREADED
 JV3848'OCTAGONAL CAP.  STATION IS 0.73M (2.4 FT) WEST OF AN NGS WITNESS POST
 JV3848'AND 0.46M (1.5 FT) NORTH OF A WSSC WITNESS POST AND 0.76M (2.5 FT)
 JV3848'EAST OF THE FRONT EDGE OF THE PARKING LOT CURB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0665 ***********************************************************************
 JW0665  DESIGNATION -  H 15
 JW0665  PID         -  JW0665
 JW0665  STATE/COUNTY-  MD/GARRETT
 JW0665  COUNTRY     -  US
 JW0665  USGS QUAD   -  DEER PARK (2016)
 JW0665
 JW0665                         *CURRENT SURVEY CONTROL
 JW0665  ______________________________________________________________________
 JW0665* NAD 83(1986) POSITION- 39 25 42.     (N) 079 17 45.     (W)   SCALED
 JW0665* NAVD 88 ORTHO HEIGHT -   781.563 (meters)     2564.18  (feet) POSTED
 JW0665  ______________________________________________________________________
 JW0665  GEOID HEIGHT    -        -31.247 (meters)                     GEOID18
 JW0665  DYNAMIC HEIGHT  -        781.02  (meters)     2562.4   (feet) COMP
 JW0665  MODELED GRAVITY -    979,910.2   (mgal)                       NAVD 88
 JW0665
 JW0665  VERT ORDER      -  * POSTED, SEE BELOW
 JW0665
 JW0665.The horizontal coordinates were scaled from a map and have
 JW0665.an estimated accuracy of +/- 6 seconds.
 JW0665
 JW0665.The orthometric height was determined by differential leveling
 JW0665.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JW0665
 JW0665.* This is a POSTED BENCH MARK height.
 JW0665
 JW0665.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0665.GEOID18 height accuracy estimate available here.
 JW0665
 JW0665.Click photographs - Photos may exist for this station.
 JW0665
 JW0665.The dynamic height is computed by dividing the NAVD 88
 JW0665.geopotential number by the normal gravity value computed on the
 JW0665.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0665.degrees latitude (g = 980.6199 gals.).
 JW0665
 JW0665.The modeled gravity was interpolated from observed gravity values.
 JW0665
 JW0665;                    North         East    Units  Estimated Accuracy
 JW0665;SPC MD       -   198,040.      202,350.      MT  (+/- 180 meters Scaled)
 JW0665
 JW0665_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD466656(NAD 83)
 JW0665
 JW0665                          SUPERSEDED SURVEY CONTROL
 JW0665
 JW0665  NGVD 29 (??/??/92)  781.667  (m)         2564.52   (f) ADJ UNCH    1 2
 JW0665
 JW0665.Superseded values are not recommended for survey control.
 JW0665
 JW0665.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0665.See file dsdata.pdf to determine how the superseded data were derived.
 JW0665
 JW0665_MARKER: DB = BENCH MARK DISK
 JW0665_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0665_SP_SET: SIGNAL BASE
 JW0665_STAMPING: H 15 1935
 JW0665_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0665
 JW0665  HISTORY     - Date     Condition        Report By
 JW0665  HISTORY     - 1935     MONUMENTED       CGS
 JW0665  HISTORY     - 1948     GOOD             CGS
 JW0665
 JW0665                          STATION DESCRIPTION
 JW0665
 JW0665'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0665'4.9 MI SW FROM SWANTON.
 JW0665'ABOUT 4.9 MILES SOUTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JW0665'FROM THE STATION AT SWANTON, GARRETT COUNTY, IN THE TOP OF THE
 JW0665'CONCRETE BASE OF SIGNAL 2243, 12 FEET WEST OF THE CENTER LINE
 JW0665'OF THE WEST TRACK, AND LEVEL WITH THE TOP OF THE RAIL.  A
 JW0665'STANDARD DISK, STAMPED H 15 1935.
 JW0665
 JW0665                          STATION RECOVERY (1948)
 JW0665
 JW0665'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948
 JW0665'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6432 ***********************************************************************
 JV6432  DESIGNATION -  H 16
 JV6432  PID         -  JV6432
 JV6432  STATE/COUNTY-  MD/MONTGOMERY
 JV6432  COUNTRY     -  US
 JV6432  USGS QUAD   -  BELTSVILLE (2016)
 JV6432
 JV6432                         *CURRENT SURVEY CONTROL
 JV6432  ______________________________________________________________________
 JV6432* NAD 83(1986) POSITION- 39 02 06.     (N) 076 58 18.     (W)   SCALED
 JV6432* NAVD 88 ORTHO HEIGHT -    99.043 (meters)      324.94  (feet) ADJUSTED
 JV6432  ______________________________________________________________________
 JV6432  GEOID HEIGHT    -        -32.035 (meters)                     GEOID18
 JV6432  DYNAMIC HEIGHT  -         98.990 (meters)      324.77  (feet) COMP
 JV6432  MODELED GRAVITY -    980,094.7   (mgal)                       NAVD 88
 JV6432
 JV6432  VERT ORDER      -  SECOND    CLASS I
 JV6432
 JV6432.The horizontal coordinates were scaled from a map and have
 JV6432.an estimated accuracy of +/- 6 seconds.
 JV6432
 JV6432.The orthometric height was determined by differential leveling and
 JV6432.adjusted by the NATIONAL GEODETIC SURVEY
 JV6432.in June 1991.
 JV6432
 JV6432.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6432.GEOID18 height accuracy estimate available here.
 JV6432
 JV6432.Click photographs - Photos may exist for this station.
 JV6432
 JV6432.The dynamic height is computed by dividing the NAVD 88
 JV6432.geopotential number by the normal gravity value computed on the
 JV6432.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6432.degrees latitude (g = 980.6199 gals.).
 JV6432
 JV6432.The modeled gravity was interpolated from observed gravity values.
 JV6432
 JV6432;                    North         East    Units  Estimated Accuracy
 JV6432;SPC MD       -   151,890.      402,450.      MT  (+/- 180 meters Scaled)
 JV6432
 JV6432_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ293225(NAD 83)
 JV6432
 JV6432                          SUPERSEDED SURVEY CONTROL
 JV6432
 JV6432.No superseded survey control is available for this station.
 JV6432
 JV6432_MARKER: DB = BENCH MARK DISK
 JV6432_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6432_SP_SET: CURB
 JV6432_STAMPING: H 16 1951
 JV6432_MARK LOGO: CGS
 JV6432_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6432_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6432_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6432+SATELLITE: SATELLITE OBSERVATIONS - 1951
 JV6432
 JV6432  HISTORY     - Date     Condition        Report By
 JV6432  HISTORY     - 1951     MONUMENTED       CGS
 JV6432
 JV6432                          STATION DESCRIPTION
 JV6432
 JV6432'DESCRIBED BY COAST AND GEODETIC SURVEY 1951
 JV6432'IN WHITE OAK, ON THE NAVAL SURFACE WEAPONS CENTER GROUNDS, ON THE
 JV6432'SOUTH SIDE OF BOWDITCH ROAD, AT THE EDGE OF A GUTTER, 4.08 M (13.4
 JV6432'FT) WEST FROM POLE NUMBER 27.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1145 ***********************************************************************
 JW1145  DESIGNATION -  H 167
 JW1145  PID         -  JW1145
 JW1145  STATE/COUNTY-  MD/GARRETT
 JW1145  COUNTRY     -  US
 JW1145  USGS QUAD   -  DEER PARK (2016)
 JW1145
 JW1145                         *CURRENT SURVEY CONTROL
 JW1145  ______________________________________________________________________
 JW1145* NAD 83(1986) POSITION- 39 25 59.     (N) 079 19 14.     (W)   SCALED
 JW1145* NAVD 88 ORTHO HEIGHT -   771.644 (meters)     2531.64  (feet) ADJUSTED
 JW1145  ______________________________________________________________________
 JW1145  GEOID HEIGHT    -        -31.223 (meters)                     GEOID18
 JW1145  DYNAMIC HEIGHT  -        771.114 (meters)     2529.90  (feet) COMP
 JW1145  MODELED GRAVITY -    979,913.9   (mgal)                       NAVD 88
 JW1145
 JW1145  VERT ORDER      -  FIRST     CLASS II
 JW1145
 JW1145.The horizontal coordinates were scaled from a map and have
 JW1145.an estimated accuracy of +/- 6 seconds.
 JW1145
 JW1145.The orthometric height was determined by differential leveling and
 JW1145.adjusted by the NATIONAL GEODETIC SURVEY
 JW1145.in June 1991.
 JW1145
 JW1145.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1145.GEOID18 height accuracy estimate available here.
 JW1145
 JW1145.Click photographs - Photos may exist for this station.
 JW1145
 JW1145.The dynamic height is computed by dividing the NAVD 88
 JW1145.geopotential number by the normal gravity value computed on the
 JW1145.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1145.degrees latitude (g = 980.6199 gals.).
 JW1145
 JW1145.The modeled gravity was interpolated from observed gravity values.
 JW1145
 JW1145;                    North         East    Units  Estimated Accuracy
 JW1145;SPC MD       -   198,620.      200,230.      MT  (+/- 180 meters Scaled)
 JW1145
 JW1145_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD445661(NAD 83)
 JW1145
 JW1145                          SUPERSEDED SURVEY CONTROL
 JW1145
 JW1145.No superseded survey control is available for this station.
 JW1145
 JW1145_MARKER: I = METAL ROD
 JW1145_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 JW1145+WITH SETTING: INFORMATION.
 JW1145_STAMPING: H 167 1983
 JW1145_MARK LOGO: NGS
 JW1145_PROJECTION: FLUSH
 JW1145_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1145_ROD/PIPE-DEPTH: 2.4 meters
 JW1145
 JW1145  HISTORY     - Date     Condition        Report By
 JW1145  HISTORY     - 1983     MONUMENTED       NGS
 JW1145
 JW1145                          STATION DESCRIPTION
 JW1145
 JW1145'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1145'9.0 KM (5.6 MI) EAST FROM OAKLAND.
 JW1145'9.0 KM (5.6 MI) EAST ALONG STATE HIGHWAY 135 FROM THE JUNCTION OF
 JW1145'U.S. HIGHWAY 219 IN OAKLAND TO THE MARK ON THE LEFT, AT THE NORTHWEST
 JW1145'CORNER OF THE BRICK FOUNDATION OF A FLAGPOLE, 15.84 METERS (52.0 FT)
 JW1145'NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 14.53 METERS (47.7 FT)
 JW1145'EAST-SOUTHEAST OF THE EAST CORNER OF THE FIRE DEPARTMENT BUILDING,
 JW1145'0.30 METER (1.0 FT) NORTHWEST OF THE NORTHWEST CORNER OF THE BRICK
 JW1145'FOUNDATION OF THE FLAGPOLE.  NOTE--SEVERAL ATTEMPTS WERE MADE TO DRIVE
 JW1145'THE ROD, DRIVEN TO REFUSAL AND ANCHORED.
 JW1145'THE MARK IS 1.82 M ABOVE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1170 ***********************************************************************
 JW1170  DESIGNATION -  H 168
 JW1170  PID         -  JW1170
 JW1170  STATE/COUNTY-  MD/ALLEGANY
 JW1170  COUNTRY     -  US
 JW1170  USGS QUAD   -  CRESAPTOWN (2016)
 JW1170
 JW1170                         *CURRENT SURVEY CONTROL
 JW1170  ______________________________________________________________________
 JW1170* NAD 83(1986) POSITION- 39 32 44.     (N) 078 52 19.     (W)   SCALED
 JW1170* NAVD 88 ORTHO HEIGHT -   232.664 (meters)      763.33  (feet) ADJUSTED
 JW1170  ______________________________________________________________________
 JW1170  GEOID HEIGHT    -        -32.509 (meters)                     GEOID18
 JW1170  DYNAMIC HEIGHT  -        232.523 (meters)      762.87  (feet) COMP
 JW1170  MODELED GRAVITY -    980,013.9   (mgal)                       NAVD 88
 JW1170
 JW1170  VERT ORDER      -  FIRST     CLASS II
 JW1170
 JW1170.The horizontal coordinates were scaled from a map and have
 JW1170.an estimated accuracy of +/- 6 seconds.
 JW1170
 JW1170.The orthometric height was determined by differential leveling and
 JW1170.adjusted by the NATIONAL GEODETIC SURVEY
 JW1170.in June 1991.
 JW1170
 JW1170.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1170.GEOID18 height accuracy estimate available here.
 JW1170
 JW1170.Click photographs - Photos may exist for this station.
 JW1170
 JW1170.The dynamic height is computed by dividing the NAVD 88
 JW1170.geopotential number by the normal gravity value computed on the
 JW1170.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1170.degrees latitude (g = 980.6199 gals.).
 JW1170
 JW1170.The modeled gravity was interpolated from observed gravity values.
 JW1170
 JW1170;                    North         East    Units  Estimated Accuracy
 JW1170;SPC MD       -   210,220.      239,100.      MT  (+/- 180 meters Scaled)
 JW1170
 JW1170_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD828794(NAD 83)
 JW1170
 JW1170                          SUPERSEDED SURVEY CONTROL
 JW1170
 JW1170.No superseded survey control is available for this station.
 JW1170
 JW1170_MARKER: I = METAL ROD
 JW1170_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
 JW1170+WITH SETTING: INFORMATION.
 JW1170_STAMPING: H 168 1983
 JW1170_MARK LOGO: NGS
 JW1170_PROJECTION: FLUSH
 JW1170_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1170_ROD/PIPE-DEPTH: 2.2 meters
 JW1170
 JW1170  HISTORY     - Date     Condition        Report By
 JW1170  HISTORY     - 1983     MONUMENTED       NGS
 JW1170
 JW1170                          STATION DESCRIPTION
 JW1170
 JW1170'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1170'7.1 KM (4.45 MI) SW FROM CRESAPTOWN.
 JW1170'7.1 KM (4.45 MI) SOUTHWEST ALONG U.S. HIGHWAY 220 FROM THE CALVARY
 JW1170'BAPTIST CHURCH IN CRESAPTOWN TO THE MARK ON THE LEFT, AT THE JUNCTION
 JW1170'OF SUMERFIELD LANE, 6.85 METERS (22.5 FT) SOUTHEAST OF THE CENTERLINE
 JW1170'OF THE HIGHWAY, 14.80 METERS (48.5 FT) WEST AND ACROSS SUMERFIELD LANE
 JW1170'FROM THE WEST CORNER OF A GARAGE FOR A SINGLE STORY STONE HOUSE,
 JW1170'0.76 METER (2.5 FT) WEST OF THE STREET SIGN (SUMERFIELD LANE),
 JW1170'0.45 METER (1.5 FT) SOUTH OF POWER POLE C5958.  NOTE--SEVERAL ATTEMPTS
 JW1170'WERE MADE TO DRIVE THE ROD, DRIVEN TO REFUSAL AND ANCHORED.
 JW1170'THE MARK IS 0.18 M ABOVE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1194 ***********************************************************************
 JW1194  DESIGNATION -  H 169
 JW1194  PID         -  JW1194
 JW1194  STATE/COUNTY-  MD/ALLEGANY
 JW1194  COUNTRY     -  US
 JW1194  USGS QUAD   -  ARTEMAS (2019)
 JW1194
 JW1194                         *CURRENT SURVEY CONTROL
 JW1194  ______________________________________________________________________
 JW1194* NAD 83(1986) POSITION- 39 39 49.76   (N) 078 25 18.50   (W)   HD_HELD1
 JW1194* NAVD 88 ORTHO HEIGHT -   294.904 (meters)      967.53  (feet) ADJUSTED
 JW1194  ______________________________________________________________________
 JW1194  GEOID HEIGHT    -        -33.490 (meters)                     GEOID18
 JW1194  DYNAMIC HEIGHT  -        294.727 (meters)      966.95  (feet) COMP
 JW1194  MODELED GRAVITY -    980,018.1   (mgal)                       NAVD 88
 JW1194
 JW1194  VERT ORDER      -  FIRST     CLASS II
 JW1194
 JW1194.The horizontal coordinates were determined by differentially corrected
 JW1194.hand held GPS observations or other comparable positioning techniques
 JW1194.and have an estimated accuracy of +/- 3 meters.
 JW1194
 JW1194.The orthometric height was determined by differential leveling and
 JW1194.adjusted by the NATIONAL GEODETIC SURVEY
 JW1194.in June 1991.
 JW1194
 JW1194.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1194.GEOID18 height accuracy estimate available here.
 JW1194
 JW1194.Click photographs - Photos may exist for this station.
 JW1194
 JW1194.The dynamic height is computed by dividing the NAVD 88
 JW1194.geopotential number by the normal gravity value computed on the
 JW1194.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1194.degrees latitude (g = 980.6199 gals.).
 JW1194
 JW1194.The modeled gravity was interpolated from observed gravity values.
 JW1194
 JW1194;                    North         East    Units  Estimated Accuracy
 JW1194;SPC MD       -   222,654.2     277,992.8     MT  (+/- 3 meters HH1 GPS) 
 JW1194
 JW1194_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD2116393623(NAD 83)
 JW1194
 JW1194                          SUPERSEDED SURVEY CONTROL
 JW1194
 JW1194.No superseded survey control is available for this station.
 JW1194
 JW1194_MARKER: DV = VERTICAL CONTROL DISK
 JW1194_SETTING: 37 = SET IN A MASSIVE RETAINING WALL
 JW1194_SP_SET: BRIDGE PARAPET WALL
 JW1194_STAMPING: H 169 1983
 JW1194_MARK LOGO: NGS
 JW1194_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1194_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW1194_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1194+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2016
 JW1194
 JW1194  HISTORY     - Date     Condition        Report By
 JW1194  HISTORY     - 1983     MONUMENTED       NGS
 JW1194  HISTORY     - 19921104 GOOD             MDSHA
 JW1194  HISTORY     - 20160217 GOOD             BASE9
 JW1194
 JW1194                          STATION DESCRIPTION
 JW1194
 JW1194'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JW1194'14.8 KM (9.2 MI) EAST FROM FLINTSTONE.
 JW1194'THE MARK IS 0.91 M ABOVE ROAD.
 JW1194'14.8 KM (9.2 MI) EAST ALONG U.S. HIGHWAY 40 FROM THE WEST END OF THE
 JW1194'HIGHWAY BRIDGE OVER FLINTSTONE CREEK IN FLINTSTONE TO THE MARK ON THE
 JW1194'RIGHT, IN TOP OF THE SOUTH END OF THE WEST ABUTMENT OF THE MOUNTAIN
 JW1194'ROAD BRIDGE OVER HIGHWAY 40, 4.57 METERS (15.0 FT) WEST OF THE
 JW1194'CENTERLINE OF MOUNTAIN ROAD, 23.46 METERS (77.0 FT) SOUTH OF THE
 JW1194'CENTERLINE OF THE EASTBOUND LANE OF THE HIGHWAY.
 JW1194
 JW1194                          STATION RECOVERY (1992)
 JW1194
 JW1194'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1194'THE MARKER WAS RECOVERED AND FOUND IN GOOD CONDITION.  DUE TO CHANGES
 JW1194'IN THE AREA AND THE CONSTRUCTION OF INTERSTATE HIGHWAY 68, A COMPLETE
 JW1194'NEW DESCRIPTION IS REQUIRED.  THE MARKER IS LOCATED ABOUT 4.9 MI (7.9
 JW1194'KM) EAST-SOUTHEAST OF PRATT, 4.1 MI (6.6 KM) WEST-SOUTHWEST OF PINEY
 JW1194'GROVE AND 8.1 MI (13.0 KM) EAST OF FLINTSTONE.  IT IS LOCATED ON ROAD
 JW1194'RIGHT-OF-WAY.  TO REACH FROM A POINT WHERE THE VICTOR CUSHWA MEMORIAL
 JW1194'BRIDGE PASSES OVER THE INTERSTATE HIGHWAY 68 AT THE SIDELING HILL
 JW1194'EXHIBIT CENTER, GO WEST ON INTERSTATE HIGHWAY 68 FOR 9.35 MI (15.05
 JW1194'KM) TO THE MARKER ON THE LEFT IN THE PARAPET WALL OF THE MOUNTAIN
 JW1194'ROAD BRIDGE THAT PASSES OVER INTERSTATE HIGHWAY 68.  THE POINT IS
 JW1194'MARKED WITH A STANDARD NATIONAL GEODETIC SURVEY VERTICAL CONTROL
 JW1194'DISK, CEMENTED IN A DRILL HOLE IN THE TOP OF THE SOUTHWEST END OF THE
 JW1194'MOST WESTERLY BRIDGE PARAPET WALL WHICH IS PART OF THE ABUTMENT FOR A
 JW1194'BRIDGE NUMBERED 1101 WHERE MOUNTAIN ROAD PASSES OVER INTERSTATE
 JW1194'HIGHWAY 68.  IT IS 15.0 FT (4.6 M) WEST OF THE CENTERLINE OF MOUNTAIN
 JW1194'ROAD, 74.0 FT.  SOUTH OF THE CENTERLINE OF THE EASTBOUND LANES OF
 JW1194'INTERSTATE HIGHWAY 68 AND ABOUT 3.0 FT (0.9 M) HIGHER THAN THE
 JW1194'SURFACE OF THE ROAD.
 JW1194
 JW1194                          STATION RECOVERY (2016)
 JW1194
 JW1194'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 JW1194'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0640 ***********************************************************************
 JW0640  DESIGNATION -  H 17
 JW0640  PID         -  JW0640
 JW0640  STATE/COUNTY-  MD/GARRETT
 JW0640  COUNTRY     -  US
 JW0640  USGS QUAD   -  MCHENRY (2016)
 JW0640
 JW0640                         *CURRENT SURVEY CONTROL
 JW0640  ______________________________________________________________________
 JW0640* NAD 83(1986) POSITION- 39 36 39.     (N) 079 20 01.     (W)   SCALED
 JW0640* NAVD 88 ORTHO HEIGHT -   690.212 (meters)     2264.47  (feet) ADJUSTED
 JW0640  ______________________________________________________________________
 JW0640  GEOID HEIGHT    -        -31.343 (meters)                     GEOID18
 JW0640  DYNAMIC HEIGHT  -        689.755 (meters)     2262.97  (feet) COMP
 JW0640  MODELED GRAVITY -    979,940.3   (mgal)                       NAVD 88
 JW0640
 JW0640  VERT ORDER      -  SECOND    CLASS 0
 JW0640
 JW0640.The horizontal coordinates were scaled from a map and have
 JW0640.an estimated accuracy of +/- 6 seconds.
 JW0640
 JW0640.The orthometric height was determined by differential leveling and
 JW0640.adjusted by the NATIONAL GEODETIC SURVEY
 JW0640.in June 1991.
 JW0640
 JW0640.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0640.GEOID18 height accuracy estimate available here.
 JW0640
 JW0640.Click photographs - Photos may exist for this station.
 JW0640
 JW0640.The dynamic height is computed by dividing the NAVD 88
 JW0640.geopotential number by the normal gravity value computed on the
 JW0640.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0640.degrees latitude (g = 980.6199 gals.).
 JW0640
 JW0640.The modeled gravity was interpolated from observed gravity values.
 JW0640
 JW0640;                    North         East    Units  Estimated Accuracy
 JW0640;SPC MD       -   218,380.      199,610.      MT  (+/- 180 meters Scaled)
 JW0640
 JW0640_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD430858(NAD 83)
 JW0640
 JW0640                          SUPERSEDED SURVEY CONTROL
 JW0640
 JW0640  NGVD 29 (??/??/92)  690.349  (m)         2264.92   (f) ADJ UNCH    2 0
 JW0640
 JW0640.Superseded values are not recommended for survey control.
 JW0640
 JW0640.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0640.See file dsdata.pdf to determine how the superseded data were derived.
 JW0640
 JW0640_MARKER: DB = BENCH MARK DISK
 JW0640_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0640_SP_SET: BRIDGE
 JW0640_STAMPING: H 17 1935
 JW0640_MARK LOGO: CGS
 JW0640_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0640
 JW0640  HISTORY     - Date     Condition        Report By
 JW0640  HISTORY     - 1935     MONUMENTED       CGS
 JW0640
 JW0640                          STATION DESCRIPTION
 JW0640
 JW0640'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JW0640'1.7 MI SW FROM ACCIDENT.
 JW0640'1.7 MILES SOUTHWEST ALONG U.S. HIGHWAY 219 FROM THE NORTH CITY
 JW0640'LIMITS AT ACCIDENT, GARRETT COUNTY, 165 FEET NORTH OF MILEAGE 18.2,
 JW0640'AT A CONCRETE BRIDGE OVER A CREEK, AND IN THE TOP OF THE NORTH
 JW0640'END OF THE EAST HEAD WALL.  A STANDARD DISK, STAMPED H 17 1935.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2839 ***********************************************************************
 HU2839  DESIGNATION -  H 170
 HU2839  PID         -  HU2839
 HU2839  STATE/COUNTY-  MD/SOMERSET
 HU2839  COUNTRY     -  US
 HU2839  USGS QUAD   -  DEAL ISLAND (2016)
 HU2839
 HU2839                         *CURRENT SURVEY CONTROL
 HU2839  ______________________________________________________________________
 HU2839* NAD 83(1986) POSITION- 38 09 04.     (N) 075 56 32.     (W)   SCALED
 HU2839* NAVD 88 ORTHO HEIGHT -     1.577 (meters)        5.17  (feet) ADJUSTED
 HU2839  ______________________________________________________________________
 HU2839  GEOID HEIGHT    -        -35.813 (meters)                     GEOID18
 HU2839  DYNAMIC HEIGHT  -          1.576 (meters)        5.17  (feet) COMP
 HU2839  MODELED GRAVITY -    979,984.1   (mgal)                       NAVD 88
 HU2839
 HU2839  VERT ORDER      -  FIRST     CLASS II
 HU2839
 HU2839.The horizontal coordinates were scaled from a map and have
 HU2839.an estimated accuracy of +/- 6 seconds.
 HU2839
 HU2839.The orthometric height was determined by differential leveling and
 HU2839.adjusted by the NATIONAL GEODETIC SURVEY
 HU2839.in June 1995.
 HU2839
 HU2839.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2839.GEOID18 height accuracy estimate available here.
 HU2839
 HU2839.Click photographs - Photos may exist for this station.
 HU2839
 HU2839.The dynamic height is computed by dividing the NAVD 88
 HU2839.geopotential number by the normal gravity value computed on the
 HU2839.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2839.degrees latitude (g = 980.6199 gals.).
 HU2839
 HU2839.The modeled gravity was interpolated from observed gravity values.
 HU2839
 HU2839;                    North         East    Units  Estimated Accuracy
 HU2839;SPC MD       -    54,310.      492,720.      MT  (+/- 180 meters Scaled)
 HU2839
 HU2839_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH174230(NAD 83)
 HU2839
 HU2839                          SUPERSEDED SURVEY CONTROL
 HU2839
 HU2839.No superseded survey control is available for this station.
 HU2839
 HU2839_MARKER: DB = BENCH MARK DISK
 HU2839_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2839_STAMPING: H 170 1988
 HU2839_MARK LOGO: MDSHA
 HU2839_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2839_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2839+STABILITY: SURFACE MOTION
 HU2839_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2839+SATELLITE: SATELLITE OBSERVATIONS - April 09, 2001
 HU2839
 HU2839  HISTORY     - Date     Condition        Report By
 HU2839  HISTORY     - 1988     MONUMENTED       MDSHA
 HU2839  HISTORY     - 20010409 GOOD             MDSHA
 HU2839
 HU2839                          STATION DESCRIPTION
 HU2839
 HU2839'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1988
 HU2839'THE MARK IS LOCATED IN THE SMALL COMMUNITY OF DEAL ISLAND.
 HU2839'OWNERSHIP--ELDRIDGE TAYLOR.
 HU2839'TO REACH FROM THE SOUTHWEST END OF THE NEW DEAL ISLAND BRIDGE OVER
 HU2839'UPPER THOROFARE, GO SOUTH ON STATE HIGHWAY 363 FOR 2.15 KM (1.35 MI)
 HU2839'TO THE MARK ON THE LEFT.
 HU2839'THE MARK IS SET IN THE TOP OF A 0.25 M (0.8 FT) ROUND CONCRETE POST
 HU2839'FLUSH WITH THE GROUND.  IT IS 5.8 M (19.0 FT) NORTHEAST OF THE
 HU2839'CENTERLINE OF STATE HIGHWAY 363, 5.6 M (18.4 FT) NORTHWEST OF A
 HU2839'POWERLINE POLE NUMBERED 36910-85431, 34.4 M (112.9 FT) SOUTHWEST OF
 HU2839'THE WEST CORNER OF A 1-STORY FRAME HOUSE AND 11.55 M (37.9 FT)  NORTH
 HU2839'OF A POWERLINE POLE NUMBERED 36908-85426.
 HU2839
 HU2839                          STATION RECOVERY (2001)
 HU2839
 HU2839'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU2839'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2427 ***********************************************************************
 HU2427  CBN         -  This is a Cooperative Base Network Control Station.
 HU2427  DESIGNATION -  H 171
 HU2427  PID         -  HU2427
 HU2427  STATE/COUNTY-  MD/WICOMICO
 HU2427  COUNTRY     -  US
 HU2427  USGS QUAD   -  WANGO (2016)
 HU2427
 HU2427                         *CURRENT SURVEY CONTROL
 HU2427  ______________________________________________________________________
 HU2427* NAD 83(2011) POSITION- 38 19 42.12706(N) 075 22 55.35643(W)   ADJUSTED
 HU2427* NAD 83(2011) ELLIP HT-   -24.250 (meters)        (06/27/12)   ADJUSTED
 HU2427* NAD 83(2011) EPOCH   -  2010.00
 HU2427* NAVD 88 ORTHO HEIGHT -    11.738 (meters)       38.51  (feet) ADJUSTED
 HU2427  ______________________________________________________________________
 HU2427  GEOID HEIGHT    -        -35.988 (meters)                     GEOID18
 HU2427  NAD 83(2011) X  -  1,264,358.596 (meters)                     COMP
 HU2427  NAD 83(2011) Y  - -4,847,718.553 (meters)                     COMP
 HU2427  NAD 83(2011) Z  -  3,934,086.500 (meters)                     COMP
 HU2427  LAPLACE CORR    -         -0.51  (seconds)                    DEFLEC18
 HU2427  DYNAMIC HEIGHT  -         11.731 (meters)       38.49  (feet) COMP
 HU2427  MODELED GRAVITY -    980,002.0   (mgal)                       NAVD 88
 HU2427
 HU2427  VERT ORDER      -  SECOND    CLASS I
 HU2427
 HU2427  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2427  Standards:
 HU2427         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2427            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2427  -------------------------------------------------------------------
 HU2427  NETWORK    0.73   1.33           0.31   0.29   0.68     -0.05685836
 HU2427  -------------------------------------------------------------------
 HU2427  Click here for local accuracies and other accuracy information.
 HU2427
 HU2427.The horizontal coordinates were established by GPS observations
 HU2427.and adjusted by the National Geodetic Survey in June 2012.
 HU2427
 HU2427.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2427.been affixed to the stable North American tectonic plate. See 
 HU2427.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2427
 HU2427.The horizontal coordinates are valid at the epoch date displayed above
 HU2427.which is a decimal equivalence of Year/Month/Day.
 HU2427
 HU2427.The orthometric height was determined by differential leveling and
 HU2427.adjusted by the NATIONAL GEODETIC SURVEY
 HU2427.in June 1991.
 HU2427
 HU2427.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2427.GEOID18 height accuracy estimate available here.
 HU2427
 HU2427.Click photographs - Photos may exist for this station.
 HU2427
 HU2427.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2427
 HU2427.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2427
 HU2427.The ellipsoidal height was determined by GPS observations
 HU2427.and is referenced to NAD 83.
 HU2427
 HU2427.The dynamic height is computed by dividing the NAVD 88
 HU2427.geopotential number by the normal gravity value computed on the
 HU2427.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2427.degrees latitude (g = 980.6199 gals.).
 HU2427
 HU2427.The modeled gravity was interpolated from observed gravity values.
 HU2427
 HU2427. The following values were computed from the NAD 83(2011) position.
 HU2427
 HU2427;                    North         East     Units Scale Factor Converg.
 HU2427;SPC MD       -    74,705.498   541,465.018   MT  0.99999519   +1 00 55.7
 HU2427;SPC MD       -   245,096.29  1,776,456.48   sFT  0.99999519   +1 00 55.7
 HU2427;UTM  18      - 4,242,318.265   466,607.665   MT  0.99961373   -0 14 13.0
 HU2427
 HU2427!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2427!SPC MD       -   1.00000381  x   0.99999519  =   0.99999900
 HU2427!UTM  18      -   1.00000381  x   0.99961373  =   0.99961753
 HU2427
 HU2427_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6660742318(NAD 83)
 HU2427
 HU2427                          SUPERSEDED SURVEY CONTROL
 HU2427
 HU2427  NAD 83(2007)-  38 19 42.12734(N)    075 22 55.35719(W) AD(2002.00) 0
 HU2427  ELLIP H (02/10/07)  -24.225  (m)                       GP(2002.00)    
 HU2427  NAD 83(1991)-  38 19 42.12735(N)    075 22 55.35690(W) AD(       ) A
 HU2427  ELLIP H (02/12/02)  -24.220  (m)                       GP(       ) 4 1
 HU2427  NAVD 88              11.74   (m)           38.5    (f) LEVELING    3  
 HU2427  NGVD 29 (06/12/91)   11.985  (m)           39.32   (f) ADJUSTED    2 1
 HU2427
 HU2427.Superseded values are not recommended for survey control.
 HU2427
 HU2427.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2427.See file dsdata.pdf to determine how the superseded data were derived.
 HU2427
 HU2427_MARKER: F = FLANGE-ENCASED ROD
 HU2427_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2427_STAMPING: H 171 1990
 HU2427_MARK LOGO: NGS
 HU2427_PROJECTION: RECESSED 2 CENTIMETERS
 HU2427_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2427_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 HU2427+STABILITY: POSITION/ELEVATION WELL
 HU2427_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2427+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2015
 HU2427_ROD/PIPE-DEPTH: 24.3 meters
 HU2427_SLEEVE-DEPTH  : 0.9 meters
 HU2427
 HU2427  HISTORY     - Date     Condition        Report By
 HU2427  HISTORY     - 1990     MONUMENTED       NGS
 HU2427  HISTORY     - 20000327 GOOD             MDSHA
 HU2427  HISTORY     - 20060509 GOOD             GEOMET
 HU2427  HISTORY     - 20080728 GOOD             WOOLPT
 HU2427  HISTORY     - 20151028 GOOD             WOOLPT
 HU2427
 HU2427                          STATION DESCRIPTION
 HU2427
 HU2427'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2427'0.6 KM (0.37 MI) EASTERLY ALONG STATE HIGHWAY 350 (MOUNT HERMON ROAD)
 HU2427'FROM THE JUNCTION OF STATE HIGHWAY 354 (WILLARDS WHITON ROAD) IN
 HU2427'POWELLVILLE, AT THE POWELLVILLE COMMUNITY PARK, IN THE NORTHWEST
 HU2427'CORNER OF A BASEBALL FIELD, 51.2 M (167.98 FT) NORTHEAST OF THE
 HU2427'NORTHEAST CORNER OF AN ABANDONED SCHOOL BUILDING, 41.7 M (136.81 FT)
 HU2427'WEST OF UTILITY POLE NUMBER 53088 91764, 12.4 M (40.68 FT) SOUTH OF
 HU2427'AND LEVEL WITH THE HIGHWAY CENTERLINE, AND 9.3 M (30.51 FT) EAST OF
 HU2427'THE CENTER OF A DRIVEWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH
 HU2427'A 5-INCH LOGO CAP.  CONTACT NICK MEYER (DIRECTOR OF COUNTY PARKS), RT
 HU2427'5 BOX 492, SALISBURY, MD 21801, TELEPHONE (301) 548-4871.
 HU2427
 HU2427                          STATION RECOVERY (2000)
 HU2427
 HU2427'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HU2427'RECOVERED AS DESCRIBED.
 HU2427
 HU2427                          STATION RECOVERY (2006)
 HU2427
 HU2427'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2006 (CCG)
 HU2427'RECOVERED IN GOOD CONDITION.
 HU2427
 HU2427                          STATION RECOVERY (2008)
 HU2427
 HU2427'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2008 (RMC)
 HU2427'RECOVERED IN GOOD CONDITION.
 HU2427
 HU2427                          STATION RECOVERY (2015)
 HU2427
 HU2427'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2015 (BSM)
 HU2427'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6164 ***********************************************************************
 JV6164  DESIGNATION -  H 172
 JV6164  PID         -  JV6164
 JV6164  STATE/COUNTY-  MD/HARFORD
 JV6164  COUNTRY     -  US
 JV6164  USGS QUAD   -  EDGEWOOD (2016)
 JV6164
 JV6164                         *CURRENT SURVEY CONTROL
 JV6164  ______________________________________________________________________
 JV6164* NAD 83(1986) POSITION- 39 27 40.     (N) 076 21 52.     (W)   SCALED
 JV6164* NAVD 88 ORTHO HEIGHT -    95.941 (meters)      314.77  (feet) ADJUSTED
 JV6164  ______________________________________________________________________
 JV6164  GEOID HEIGHT    -        -32.933 (meters)                     GEOID18
 JV6164  DYNAMIC HEIGHT  -         95.891 (meters)      314.60  (feet) COMP
 JV6164  MODELED GRAVITY -    980,101.2   (mgal)                       NAVD 88
 JV6164
 JV6164  VERT ORDER      -  FIRST     CLASS II
 JV6164
 JV6164.The horizontal coordinates were scaled from a map and have
 JV6164.an estimated accuracy of +/- 6 seconds.
 JV6164
 JV6164.The orthometric height was determined by differential leveling and
 JV6164.adjusted by the NATIONAL GEODETIC SURVEY
 JV6164.in June 1991.
 JV6164
 JV6164.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6164.GEOID18 height accuracy estimate available here.
 JV6164
 JV6164.Click photographs - Photos may exist for this station.
 JV6164
 JV6164.The dynamic height is computed by dividing the NAVD 88
 JV6164.geopotential number by the normal gravity value computed on the
 JV6164.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6164.degrees latitude (g = 980.6199 gals.).
 JV6164
 JV6164.The modeled gravity was interpolated from observed gravity values.
 JV6164
 JV6164;                    North         East    Units  Estimated Accuracy
 JV6164;SPC MD       -   199,390.      454,700.      MT  (+/- 180 meters Scaled)
 JV6164
 JV6164_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ826688(NAD 83)
 JV6164
 JV6164                          SUPERSEDED SURVEY CONTROL
 JV6164
 JV6164.No superseded survey control is available for this station.
 JV6164
 JV6164_MARKER: I = METAL ROD
 JV6164_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6164_STAMPING: H 172 1989
 JV6164_MARK LOGO: NGS
 JV6164_PROJECTION: FLUSH
 JV6164_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6164_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6164_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6164+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6164_ROD/PIPE-DEPTH: 9.8 meters
 JV6164
 JV6164  HISTORY     - Date     Condition        Report By
 JV6164  HISTORY     - 1989     MONUMENTED       NGS
 JV6164  HISTORY     - 20240409 MARK NOT FOUND   USGS
 JV6164
 JV6164                          STATION DESCRIPTION
 JV6164
 JV6164'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6164'4.3 KM (2.65 MI) SOUTHERLY ALONG STATE HIGHWAY 152 FROM ITS JUNCTION
 JV6164'WITH U.S. HIGHWAY 1 IN LYNCHS CORNER, 11.0 M (36.1 FT) SOUTHWEST OF
 JV6164'THE CENTERLINE OF THE HIGHWAY, 8.0 M (26.2 FT) SOUTHEAST OF THE
 JV6164'CENTER OF AN ENTRANCE TO AN ABANDONED GRAVEL PIT, 3.7 M (12.1 FT)
 JV6164'SOUTHWEST OF A GUARDRAIL, 2.7 M (8.9 FT) SOUTHEAST OF A GUARDRAIL,
 JV6164'0.3 M (1.0 FT) NORTHEAST OF A WITNESS POST, AND 0.3 M (1.0 FT) BELOW
 JV6164'THE LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH
 JV6164'A 5-INCH LOGO CAP.
 JV6164
 JV6164                          STATION RECOVERY (2024)
 JV6164
 JV6164'RECOVERY NOTE BY US GEOLOGICAL SURVEY 2024 (NG)
 JV6164'COULD NOT FIND MARK AS DESCRIBED.  WITNESS POST WAS GONE AND
 JV6164'METAL-CONTAINING GARBAGE BURIED IN SEDIMENT CREATED ISSUES FOR METAL
 JV6164'DETECTOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6201 ***********************************************************************
 JV6201  DESIGNATION -  H 173
 JV6201  PID         -  JV6201
 JV6201  STATE/COUNTY-  MD/HARFORD
 JV6201  COUNTRY     -  US
 JV6201  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6201
 JV6201                         *CURRENT SURVEY CONTROL
 JV6201  ______________________________________________________________________
 JV6201* NAD 83(1986) POSITION- 39 37 25.     (N) 076 24 05.     (W)   SCALED
 JV6201* NAVD 88 ORTHO HEIGHT -    79.572 (meters)      261.06  (feet) ADJUSTED
 JV6201  ______________________________________________________________________
 JV6201  GEOID HEIGHT    -        -32.645 (meters)                     GEOID18
 JV6201  DYNAMIC HEIGHT  -         79.531 (meters)      260.93  (feet) COMP
 JV6201  MODELED GRAVITY -    980,114.8   (mgal)                       NAVD 88
 JV6201
 JV6201  VERT ORDER      -  FIRST     CLASS II
 JV6201
 JV6201.The horizontal coordinates were scaled from a map and have
 JV6201.an estimated accuracy of +/- 6 seconds.
 JV6201
 JV6201.The orthometric height was determined by differential leveling and
 JV6201.adjusted by the NATIONAL GEODETIC SURVEY
 JV6201.in June 1991.
 JV6201
 JV6201.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6201.GEOID18 height accuracy estimate available here.
 JV6201
 JV6201.Click photographs - Photos may exist for this station.
 JV6201
 JV6201.The dynamic height is computed by dividing the NAVD 88
 JV6201.geopotential number by the normal gravity value computed on the
 JV6201.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6201.degrees latitude (g = 980.6199 gals.).
 JV6201
 JV6201.The modeled gravity was interpolated from observed gravity values.
 JV6201
 JV6201;                    North         East    Units  Estimated Accuracy
 JV6201;SPC MD       -   217,410.      451,400.      MT  (+/- 180 meters Scaled)
 JV6201
 JV6201_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ797869(NAD 83)
 JV6201
 JV6201                          SUPERSEDED SURVEY CONTROL
 JV6201
 JV6201.No superseded survey control is available for this station.
 JV6201
 JV6201_MARKER: DV = VERTICAL CONTROL DISK
 JV6201_SETTING: 66 = SET IN ROCK OUTCROP
 JV6201_STAMPING: H 173 1989
 JV6201_MARK LOGO: NGS
 JV6201_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6201_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6201+STABILITY: POSITION/ELEVATION WELL
 JV6201_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6201+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6201
 JV6201  HISTORY     - Date     Condition        Report By
 JV6201  HISTORY     - 1989     MONUMENTED       NGS
 JV6201
 JV6201                          STATION DESCRIPTION
 JV6201
 JV6201'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6201'4.7 KM (2.90 MI) NORTHERLY ALONG STATE HIGHWAY 24 FROM THE JUNCTION
 JV6201'OF JARRETTSVILLE ROAD IN FOREST HILL, NEAR THE CENTER OF A 70 FOOT
 JV6201'EXPOSED AREA OF BEDROCK IN A HIGHWAY CUT, 6.2 M (20.3 FT) NORTH OF
 JV6201'THE EXTENDED CENTER OF A BRIDGE SPANNING DEER CREEK, 4.3 M (14.1 FT)
 JV6201'WEST OF THE CENTERLINE OF THE HIGHWAY, 0.7 M (2.3 FT) ABOVE THE LEVEL
 JV6201'OF THE HIGHWAY, AND 0.2 M (0.7 FT) NORTH OF A WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6238 ***********************************************************************
 JV6238  DESIGNATION -  H 174
 JV6238  PID         -  JV6238
 JV6238  STATE/COUNTY-  MD/HARFORD
 JV6238  COUNTRY     -  US
 JV6238  USGS QUAD   -  DELTA (2019)
 JV6238
 JV6238                         *CURRENT SURVEY CONTROL
 JV6238  ______________________________________________________________________
 JV6238* NAD 83(1986) POSITION- 39 42 19.     (N) 076 20 24.     (W)   SCALED
 JV6238* NAVD 88 ORTHO HEIGHT -   198.794 (meters)      652.21  (feet) ADJUSTED
 JV6238  ______________________________________________________________________
 JV6238  GEOID HEIGHT    -        -32.769 (meters)                     GEOID18
 JV6238  DYNAMIC HEIGHT  -        198.694 (meters)      651.88  (feet) COMP
 JV6238  MODELED GRAVITY -    980,119.2   (mgal)                       NAVD 88
 JV6238
 JV6238  VERT ORDER      -  FIRST     CLASS II
 JV6238
 JV6238.The horizontal coordinates were scaled from a map and have
 JV6238.an estimated accuracy of +/- 6 seconds.
 JV6238
 JV6238.The orthometric height was determined by differential leveling and
 JV6238.adjusted by the NATIONAL GEODETIC SURVEY
 JV6238.in June 1991.
 JV6238
 JV6238.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6238.GEOID18 height accuracy estimate available here.
 JV6238
 JV6238.Click photographs - Photos may exist for this station.
 JV6238
 JV6238.The dynamic height is computed by dividing the NAVD 88
 JV6238.geopotential number by the normal gravity value computed on the
 JV6238.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6238.degrees latitude (g = 980.6199 gals.).
 JV6238
 JV6238.The modeled gravity was interpolated from observed gravity values.
 JV6238
 JV6238;                    North         East    Units  Estimated Accuracy
 JV6238;SPC MD       -   226,510.      456,600.      MT  (+/- 180 meters Scaled)
 JV6238
 JV6238_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ851959(NAD 83)
 JV6238
 JV6238                          SUPERSEDED SURVEY CONTROL
 JV6238
 JV6238.No superseded survey control is available for this station.
 JV6238
 JV6238_MARKER: I = METAL ROD
 JV6238_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6238_STAMPING: H 174 1989
 JV6238_MARK LOGO: NGS
 JV6238_PROJECTION: FLUSH
 JV6238_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6238_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6238_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6238+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6238_ROD/PIPE-DEPTH: 4.6 meters
 JV6238
 JV6238  HISTORY     - Date     Condition        Report By
 JV6238  HISTORY     - 1989     MONUMENTED       NGS
 JV6238  HISTORY     - 19990713 GOOD             GEOMET
 JV6238  HISTORY     - 20010421 MARK NOT FOUND   USPSQD
 JV6238
 JV6238                          STATION DESCRIPTION
 JV6238
 JV6238'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6238'1.0 KM (0.60 MI) SOUTHEASTERLY ALONG STATE HIGHWAY 136 FROM THE
 JV6238'JUNCTION OF STATE HIGHWAY 165 IN WHITEFORD, 36.2 M (118.8 FT)
 JV6238'NORTHWEST OF THE NORTHWEST CORNER OF A MOBILE HOME, 34.2 M (112.2 FT)
 JV6238'SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 5.3 M (17.4 FT) SOUTHEAST
 JV6238'OF THE CENTER OF QUARRY ROAD, 0.6 M (2.0 FT) NORTHEAST OF A WITNESS
 JV6238'POST AND UTILITY POLE NUMBER 20851, AND 0.6 M (2.0 FT) ABOVE THE
 JV6238'LEVEL OF THE HIGHWAY.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 JV6238'5-INCH LOGO CAP.
 JV6238
 JV6238                          STATION RECOVERY (1999)
 JV6238
 JV6238'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (RDA)
 JV6238'RECOVERED AS DESCRIBED.
 JV6238
 JV6238                          STATION RECOVERY (2001)
 JV6238
 JV6238'RECOVERY NOTE BY US POWER SQUADRON 2001 (LB)
 JV6238'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2475 ***********************************************************************
 HU2475  DESIGNATION -  H 175
 HU2475  PID         -  HU2475
 HU2475  STATE/COUNTY-  MD/WICOMICO
 HU2475  COUNTRY     -  US
 HU2475  USGS QUAD   -  WANGO (2016)
 HU2475
 HU2475                         *CURRENT SURVEY CONTROL
 HU2475  ______________________________________________________________________
 HU2475* NAD 83(1986) POSITION- 38 20 42.     (N) 075 28 38.     (W)   SCALED
 HU2475* NAVD 88 ORTHO HEIGHT -    15.729 (meters)       51.60  (feet) ADJUSTED
 HU2475  ______________________________________________________________________
 HU2475  GEOID HEIGHT    -        -35.928 (meters)                     GEOID18
 HU2475  DYNAMIC HEIGHT  -         15.719 (meters)       51.57  (feet) COMP
 HU2475  MODELED GRAVITY -    980,003.0   (mgal)                       NAVD 88
 HU2475
 HU2475  VERT ORDER      -  SECOND    CLASS I
 HU2475
 HU2475.The horizontal coordinates were scaled from a map and have
 HU2475.an estimated accuracy of +/- 6 seconds.
 HU2475
 HU2475.The orthometric height was determined by differential leveling and
 HU2475.adjusted by the NATIONAL GEODETIC SURVEY
 HU2475.in June 1991.
 HU2475
 HU2475.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2475.GEOID18 height accuracy estimate available here.
 HU2475
 HU2475.Click photographs - Photos may exist for this station.
 HU2475
 HU2475.The dynamic height is computed by dividing the NAVD 88
 HU2475.geopotential number by the normal gravity value computed on the
 HU2475.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2475.degrees latitude (g = 980.6199 gals.).
 HU2475
 HU2475.The modeled gravity was interpolated from observed gravity values.
 HU2475
 HU2475;                    North         East    Units  Estimated Accuracy
 HU2475;SPC MD       -    76,410.      533,110.      MT  (+/- 180 meters Scaled)
 HU2475
 HU2475_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH582442(NAD 83)
 HU2475
 HU2475                          SUPERSEDED SURVEY CONTROL
 HU2475
 HU2475  NGVD 29 (06/12/91)   15.975  (m)           52.41   (f) ADJUSTED    2 1
 HU2475
 HU2475.Superseded values are not recommended for survey control.
 HU2475
 HU2475.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2475.See file dsdata.pdf to determine how the superseded data were derived.
 HU2475
 HU2475_MARKER: I = METAL ROD
 HU2475_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2475_STAMPING: H 175 1990
 HU2475_MARK LOGO: NGS
 HU2475_PROJECTION: RECESSED 1 CENTIMETERS
 HU2475_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2475_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2475_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2475+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2475_ROD/PIPE-DEPTH: 20.7 meters
 HU2475_SLEEVE-DEPTH  : 0.9 meters
 HU2475
 HU2475  HISTORY     - Date     Condition        Report By
 HU2475  HISTORY     - 1990     MONUMENTED       NGS
 HU2475
 HU2475                          STATION DESCRIPTION
 HU2475
 HU2475'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2475'9.2 KM (5.72 MI) WESTERLY ALONG STATE HIGHWAY 350 (MOUNT HERMON ROAD)
 HU2475'FROM THE JUNCTION OF STATE HIGHWAY 354 (WILLARDS WHITON ROAD) IN
 HU2475'POWELLVILLE, 24.3 M (79.72 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF A
 HU2475'HOUSE, 14.2 M (46.59 FT) WEST OF THE CENTER OF A DRIVEWAY, 9.0 M
 HU2475'(29.53 FT) NORTH OF AND LEVEL WITH THE CENTERLINE OF THE HIGHWAY, AND
 HU2475'6.8 M (22.31 FT) EAST OF THE CENTER OF WILSHIRE STREET.  NOTE--ACCESS
 HU2475'TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2475'PROPERTY OWNED BY CHARLES BRAGE JR., RT 1 BOX 62, PARSONSBURG, MD
 HU2475'21849, TELEPHONE (301) 543-1890.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2508 ***********************************************************************
 HU2508  DESIGNATION -  H 176
 HU2508  PID         -  HU2508
 HU2508  STATE/COUNTY-  MD/WICOMICO
 HU2508  COUNTRY     -  US
 HU2508  USGS QUAD   -  EDEN (2016)
 HU2508
 HU2508                         *CURRENT SURVEY CONTROL
 HU2508  ______________________________________________________________________
 HU2508* NAD 83(1986) POSITION- 38 18 19.     (N) 075 39 24.     (W)   SCALED
 HU2508* NAVD 88 ORTHO HEIGHT -    10.619 (meters)       34.84  (feet) ADJUSTED
 HU2508  ______________________________________________________________________
 HU2508  GEOID HEIGHT    -        -35.880 (meters)                     GEOID18
 HU2508  DYNAMIC HEIGHT  -         10.612 (meters)       34.82  (feet) COMP
 HU2508  MODELED GRAVITY -    979,999.0   (mgal)                       NAVD 88
 HU2508
 HU2508  VERT ORDER      -  SECOND    CLASS I
 HU2508
 HU2508.The horizontal coordinates were scaled from a map and have
 HU2508.an estimated accuracy of +/- 6 seconds.
 HU2508
 HU2508.The orthometric height was determined by differential leveling and
 HU2508.adjusted by the NATIONAL GEODETIC SURVEY
 HU2508.in June 1991.
 HU2508
 HU2508.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2508.GEOID18 height accuracy estimate available here.
 HU2508
 HU2508.Click photographs - Photos may exist for this station.
 HU2508
 HU2508.The dynamic height is computed by dividing the NAVD 88
 HU2508.geopotential number by the normal gravity value computed on the
 HU2508.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2508.degrees latitude (g = 980.6199 gals.).
 HU2508
 HU2508.The modeled gravity was interpolated from observed gravity values.
 HU2508
 HU2508;                    North         East    Units  Estimated Accuracy
 HU2508;SPC MD       -    71,750.      517,490.      MT  (+/- 180 meters Scaled)
 HU2508
 HU2508_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH425398(NAD 83)
 HU2508
 HU2508                          SUPERSEDED SURVEY CONTROL
 HU2508
 HU2508  NGVD 29 (06/12/91)   10.874  (m)           35.68   (f) ADJUSTED    2 1
 HU2508
 HU2508.Superseded values are not recommended for survey control.
 HU2508
 HU2508.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2508.See file dsdata.pdf to determine how the superseded data were derived.
 HU2508
 HU2508_MARKER: I = METAL ROD
 HU2508_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2508_STAMPING: H 176 1990
 HU2508_MARK LOGO: NGS
 HU2508_PROJECTION: RECESSED 2 CENTIMETERS
 HU2508_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2508_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2508_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2508+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2508_ROD/PIPE-DEPTH: 15.8 meters
 HU2508_SLEEVE-DEPTH  : 0.9 meters
 HU2508
 HU2508  HISTORY     - Date     Condition        Report By
 HU2508  HISTORY     - 1990     MONUMENTED       NGS
 HU2508
 HU2508                          STATION DESCRIPTION
 HU2508
 HU2508'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2508'2.6 KM (1.62 MI) SOUTHWESTERLY ALONG ALLEN ROAD FROM ITS JUNCTION WITH
 HU2508'COUNTY ROAD 360, 56.7 M (186.02 FT) SOUTHWEST OF THE CENTER OF SMITH
 HU2508'ROAD, 9.4 M (30.84 FT) NORTHWEST OF THE CENTERLINE OF THE ROAD, 7.2 M
 HU2508'(23.62 FT) SOUTH OF THE SOUTHWEST CORNER OF A HOUSE, 1.7 M (5.58 FT)
 HU2508'NORTHEAST OF UTILITY POLE NUMBER 45188 90973, AND LEVEL WITH THE ROAD.
 HU2508'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE
 HU2508'MONUMENT IS ON PROPERTY OWNED BY WILLMORE HENRY CAON, RT 1 BOX 537,
 HU2508'EDEN, MD 21822, TELEPHONE NUMBER (301) 543-4334.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6212 ***********************************************************************
 JV6212  DESIGNATION -  H 177
 JV6212  PID         -  JV6212
 JV6212  STATE/COUNTY-  MD/HARFORD
 JV6212  COUNTRY     -  US
 JV6212  USGS QUAD   -  BEL AIR (2016)
 JV6212
 JV6212                         *CURRENT SURVEY CONTROL
 JV6212  ______________________________________________________________________
 JV6212* NAD 83(1986) POSITION- 39 34 52.     (N) 076 20 10.     (W)   SCALED
 JV6212* NAVD 88 ORTHO HEIGHT -   138.953 (meters)      455.88  (feet) ADJUSTED
 JV6212  ______________________________________________________________________
 JV6212  GEOID HEIGHT    -        -32.721 (meters)                     GEOID18
 JV6212  DYNAMIC HEIGHT  -        138.883 (meters)      455.65  (feet) COMP
 JV6212  MODELED GRAVITY -    980,120.5   (mgal)                       NAVD 88
 JV6212
 JV6212  VERT ORDER      -  FIRST     CLASS II
 JV6212
 JV6212.The horizontal coordinates were scaled from a map and have
 JV6212.an estimated accuracy of +/- 6 seconds.
 JV6212
 JV6212.The orthometric height was determined by differential leveling and
 JV6212.adjusted by the NATIONAL GEODETIC SURVEY
 JV6212.in June 1991.
 JV6212
 JV6212.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6212.GEOID18 height accuracy estimate available here.
 JV6212
 JV6212.Click photographs - Photos may exist for this station.
 JV6212
 JV6212.The dynamic height is computed by dividing the NAVD 88
 JV6212.geopotential number by the normal gravity value computed on the
 JV6212.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6212.degrees latitude (g = 980.6199 gals.).
 JV6212
 JV6212.The modeled gravity was interpolated from observed gravity values.
 JV6212
 JV6212;                    North         East    Units  Estimated Accuracy
 JV6212;SPC MD       -   212,730.      457,040.      MT  (+/- 180 meters Scaled)
 JV6212
 JV6212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ852821(NAD 83)
 JV6212
 JV6212                          SUPERSEDED SURVEY CONTROL
 JV6212
 JV6212.No superseded survey control is available for this station.
 JV6212
 JV6212_MARKER: I = METAL ROD
 JV6212_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV6212_STAMPING: H 177 1989
 JV6212_MARK LOGO: NGS
 JV6212_PROJECTION: FLUSH
 JV6212_MAGNETIC: I = MARKER IS A STEEL ROD
 JV6212_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV6212_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6212+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6212_ROD/PIPE-DEPTH: 5.6 meters
 JV6212
 JV6212  HISTORY     - Date     Condition        Report By
 JV6212  HISTORY     - 1989     MONUMENTED       NGS
 JV6212
 JV6212                          STATION DESCRIPTION
 JV6212
 JV6212'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 JV6212'0.8 KM (0.50 MI) NORTHEASTERLY ALONG U.S. HIGHWAY 1 FROM THE
 JV6212'JUNCTION OF STATE HIGHWAY 543 IN HICKORY, 8.2 M (26.9 FT) SOUTHEAST
 JV6212'OF THE CENTERLINE OF THE HIGHWAY, 4.8 M (15.7 FT) NORTHEAST OF THE
 JV6212'EXTENDED CENTER OF A DRIVEWAY LEADING NORTHWEST, 1.3 M (4.3 FT)
 JV6212'NORTHEAST OF UTILITY POLE NUMBER 502697 WITH ONE GUY WIRE, 0.3 M (1.0
 JV6212'FT) NORTHWEST OF A WITNESS POST, AND LEVEL WITH THE HIGHWAY.
 JV6212'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2493 ***********************************************************************
 HU2493  DESIGNATION -  H 178
 HU2493  PID         -  HU2493
 HU2493  STATE/COUNTY-  MD/WICOMICO
 HU2493  COUNTRY     -  US
 HU2493  USGS QUAD   -  EDEN (2016)
 HU2493
 HU2493                         *CURRENT SURVEY CONTROL
 HU2493  ______________________________________________________________________
 HU2493* NAD 83(1986) POSITION- 38 20 04.     (N) 075 42 20.     (W)   SCALED
 HU2493* NAVD 88 ORTHO HEIGHT -     6.215 (meters)       20.39  (feet) ADJUSTED
 HU2493  ______________________________________________________________________
 HU2493  GEOID HEIGHT    -        -35.796 (meters)                     GEOID18
 HU2493  DYNAMIC HEIGHT  -          6.211 (meters)       20.38  (feet) COMP
 HU2493  MODELED GRAVITY -    980,002.3   (mgal)                       NAVD 88
 HU2493
 HU2493  VERT ORDER      -  SECOND    CLASS I
 HU2493
 HU2493.The horizontal coordinates were scaled from a map and have
 HU2493.an estimated accuracy of +/- 6 seconds.
 HU2493
 HU2493.The orthometric height was determined by differential leveling and
 HU2493.adjusted by the NATIONAL GEODETIC SURVEY
 HU2493.in June 1991.
 HU2493
 HU2493.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2493.GEOID18 height accuracy estimate available here.
 HU2493
 HU2493.Click photographs - Photos may exist for this station.
 HU2493
 HU2493.The dynamic height is computed by dividing the NAVD 88
 HU2493.geopotential number by the normal gravity value computed on the
 HU2493.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2493.degrees latitude (g = 980.6199 gals.).
 HU2493
 HU2493.The modeled gravity was interpolated from observed gravity values.
 HU2493
 HU2493;                    North         East    Units  Estimated Accuracy
 HU2493;SPC MD       -    74,930.      513,170.      MT  (+/- 180 meters Scaled)
 HU2493
 HU2493_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH383431(NAD 83)
 HU2493
 HU2493                          SUPERSEDED SURVEY CONTROL
 HU2493
 HU2493  NGVD 29 (06/12/91)    6.470  (m)           21.23   (f) ADJUSTED    2 1
 HU2493
 HU2493.Superseded values are not recommended for survey control.
 HU2493
 HU2493.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2493.See file dsdata.pdf to determine how the superseded data were derived.
 HU2493
 HU2493_MARKER: I = METAL ROD
 HU2493_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2493_STAMPING: H 178 1990
 HU2493_MARK LOGO: NGS
 HU2493_PROJECTION: RECESSED 2 CENTIMETERS
 HU2493_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2493_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2493_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2493+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2493_ROD/PIPE-DEPTH: 18.2 meters
 HU2493_SLEEVE-DEPTH  : 0.9 meters
 HU2493
 HU2493  HISTORY     - Date     Condition        Report By
 HU2493  HISTORY     - 1990     MONUMENTED       NGS
 HU2493
 HU2493                          STATION DESCRIPTION
 HU2493
 HU2493'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2493'2.7 KM (1.68 MI) WESTERLY ALONG WALNUT TREE ROAD FROM THE JUNCTION OF
 HU2493'ALLEN ROAD IN FRUITLAND, THENCE 2.8 KM (1.74 MI) NORTHERLY ALONG CAMP
 HU2493'GROUND ROAD, THENCE 1.0 KM (0.62 MI) SOUTHWESTERLY ALONG COOPER ROAD,
 HU2493'31.1 M (102.03 FT) SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF A HOUSE
 HU2493', 19.6 M (64.30 FT) EAST OF THE CENTER OF A DRIVEWAY, 8.7 M
 HU2493'(28.54 FT) NORTH OF THE CENTERLINE OF THE ROAD, AND LEVEL WITH THE
 HU2493'ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2201 ***********************************************************************
 HU2201  DESIGNATION -  H 179
 HU2201  PID         -  HU2201
 HU2201  STATE/COUNTY-  MD/WICOMICO
 HU2201  COUNTRY     -  US
 HU2201  USGS QUAD   -  SHARPTOWN (2016)
 HU2201
 HU2201                         *CURRENT SURVEY CONTROL
 HU2201  ______________________________________________________________________
 HU2201* NAD 83(1986) POSITION- 38 30 04.2    (N) 075 42 20.8    (W)   HD_HELD2
 HU2201* NAVD 88 ORTHO HEIGHT -    10.945 (meters)       35.91  (feet) ADJUSTED
 HU2201  ______________________________________________________________________
 HU2201  GEOID HEIGHT    -        -35.601 (meters)                     GEOID18
 HU2201  DYNAMIC HEIGHT  -         10.939 (meters)       35.89  (feet) COMP
 HU2201  MODELED GRAVITY -    980,011.5   (mgal)                       NAVD 88
 HU2201
 HU2201  VERT ORDER      -  SECOND    CLASS I
 HU2201
 HU2201.The horizontal coordinates were established by autonomous hand held GPS
 HU2201.observations and have an estimated accuracy of +/- 10 meters.
 HU2201
 HU2201.The orthometric height was determined by differential leveling and
 HU2201.adjusted by the NATIONAL GEODETIC SURVEY
 HU2201.in June 1991.
 HU2201
 HU2201.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2201.GEOID18 height accuracy estimate available here.
 HU2201
 HU2201.Click photographs - Photos may exist for this station.
 HU2201
 HU2201.The dynamic height is computed by dividing the NAVD 88
 HU2201.geopotential number by the normal gravity value computed on the
 HU2201.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2201.degrees latitude (g = 980.6199 gals.).
 HU2201
 HU2201.The modeled gravity was interpolated from observed gravity values.
 HU2201
 HU2201;                    North         East    Units  Estimated Accuracy
 HU2201;SPC MD       -    93,433.      512,890.      MT  (+/- 10 meters HH2 GPS)
 HU2201
 HU2201_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3845861658(NAD 83)
 HU2201
 HU2201                          SUPERSEDED SURVEY CONTROL
 HU2201
 HU2201  NGVD 29 (06/12/91)   11.192  (m)           36.72   (f) ADJUSTED    2 1
 HU2201
 HU2201.Superseded values are not recommended for survey control.
 HU2201
 HU2201.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2201.See file dsdata.pdf to determine how the superseded data were derived.
 HU2201
 HU2201_MARKER: F = FLANGE-ENCASED ROD
 HU2201_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2201_STAMPING: H 179 1990
 HU2201_MARK LOGO: NGS
 HU2201_PROJECTION: RECESSED 24 CENTIMETERS
 HU2201_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2201_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2201_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2201+SATELLITE: SATELLITE OBSERVATIONS - June 07, 2017
 HU2201_ROD/PIPE-DEPTH: 21.8 meters
 HU2201_SLEEVE-DEPTH  : 0.9 meters
 HU2201
 HU2201  HISTORY     - Date     Condition        Report By
 HU2201  HISTORY     - 1990     MONUMENTED       NGS
 HU2201  HISTORY     - 20170607 GOOD             ARCSHE
 HU2201
 HU2201                          STATION DESCRIPTION
 HU2201
 HU2201'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2201'3.6 KM (2.24 MI) EASTERLY ALONG STATE HIGHWAY 54 FROM THE JUNCTION OF
 HU2201'STATE HIGHWAY 313 IN MARDELA SPRINGS, THENCE 4.3 KM (2.67 MI)
 HU2201'NORTHERLY ALONG NORRIS TWILLEY ROAD, 0.35 KM (0.22 MI) NORTH OF THE
 HU2201'INTERSECTION OF A CROSSROAD, 16.2 M (53.15 FT) SOUTHWEST OF THE
 HU2201'SOUTHWEST CORNER OF A MOBILE HOME, 11.4 M (37.40 FT) SOUTH OF THE
 HU2201'CENTER OF A DRIVEWAY, 7.5 M (24.61 FT) EAST OF THE CENTER OF THE ROAD
 HU2201', AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS
 HU2201'THROUGH A 5-INCH LOGO CAP.  THE MARK IS ON PROPERTY OWNED BY MR.
 HU2201'JAMES HAYES, RT 1 BOX 290, MARDELA SPRINGS, MD 21837, TELEPHONE
 HU2201'NUMBER (301) 742-5850.
 HU2201
 HU2201                          STATION RECOVERY (2017)
 HU2201
 HU2201'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2017 (MRA)
 HU2201'THE MARK IS 24 FT (7.3 M) SOUTHEAST OF THE SOUTHEAST LINE EXTENDED OF
 HU2201'MOBILE HOME 11185 AND 2 FT (0.6 M) NORTHEAST OF AN OVERHEAD POWER
 HU2201'LINE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2180 ***********************************************************************
 HU2180  DESIGNATION -  H 180
 HU2180  PID         -  HU2180
 HU2180  STATE/COUNTY-  MD/WICOMICO
 HU2180  COUNTRY     -  US
 HU2180  USGS QUAD   -  WETIPQUIN (2016)
 HU2180
 HU2180                         *CURRENT SURVEY CONTROL
 HU2180  ______________________________________________________________________
 HU2180* NAD 83(1986) POSITION- 38 18 54.1    (N) 075 48 22.9    (W)   HD_HELD2
 HU2180* NAVD 88 ORTHO HEIGHT -     1.707 (meters)        5.60  (feet) ADJUSTED
 HU2180  ______________________________________________________________________
 HU2180  GEOID HEIGHT    -        -35.758 (meters)                     GEOID18
 HU2180  DYNAMIC HEIGHT  -          1.706 (meters)        5.60  (feet) COMP
 HU2180  MODELED GRAVITY -    979,997.1   (mgal)                       NAVD 88
 HU2180
 HU2180  VERT ORDER      -  SECOND    CLASS I
 HU2180
 HU2180.The horizontal coordinates were established by autonomous hand held GPS
 HU2180.observations and have an estimated accuracy of +/- 10 meters.
 HU2180
 HU2180.The orthometric height was determined by differential leveling and
 HU2180.adjusted by the NATIONAL GEODETIC SURVEY
 HU2180.in June 1991.
 HU2180
 HU2180.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2180.GEOID18 height accuracy estimate available here.
 HU2180
 HU2180.Click photographs - Photos may exist for this station.
 HU2180
 HU2180.The dynamic height is computed by dividing the NAVD 88
 HU2180.geopotential number by the normal gravity value computed on the
 HU2180.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2180.degrees latitude (g = 980.6199 gals.).
 HU2180
 HU2180.The modeled gravity was interpolated from observed gravity values.
 HU2180
 HU2180;                    North         East    Units  Estimated Accuracy
 HU2180;SPC MD       -    72,653.      504,387.      MT  (+/- 10 meters HH2 GPS)
 HU2180
 HU2180_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2950741076(NAD 83)
 HU2180
 HU2180                          SUPERSEDED SURVEY CONTROL
 HU2180
 HU2180  NGVD 29 (06/12/91)    1.961  (m)            6.43   (f) ADJUSTED    2 1
 HU2180
 HU2180.Superseded values are not recommended for survey control.
 HU2180
 HU2180.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2180.See file dsdata.pdf to determine how the superseded data were derived.
 HU2180
 HU2180_MARKER: F = FLANGE-ENCASED ROD
 HU2180_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2180_STAMPING: H 180 1990
 HU2180_MARK LOGO: NGS
 HU2180_PROJECTION: RECESSED 6 CENTIMETERS
 HU2180_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2180_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2180+SATELLITE: SATELLITE OBSERVATIONS - March 30, 2017
 HU2180_ROD/PIPE-DEPTH: 9.6 meters
 HU2180_SLEEVE-DEPTH  : 0.9 meters
 HU2180
 HU2180  HISTORY     - Date     Condition        Report By
 HU2180  HISTORY     - 1990     MONUMENTED       NGS
 HU2180  HISTORY     - 20170330 GOOD             PROFLN
 HU2180
 HU2180                          STATION DESCRIPTION
 HU2180
 HU2180'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2180'2.2 KM (1.37 MI) SOUTHERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU2180'OFFICE IN QUANTICO, THENCE 1.0 KM (0.62 MI) EASTERLY ALONG STATE
 HU2180'HIGHWAY 349, THENCE 7.0 KM (4.35 MI) SOUTHWESTERLY ALONG STATE
 HU2180'HIGHWAY 352, THENCE 3.3 KM (2.05 MI) NORTHWESTERLY ALONG HEAD OF THE
 HU2180'CREEK ROAD, 41.7 M (136.81 FT) SOUTHWEST OF THE CENTER OF A DRIVEWAY,
 HU2180'5.2 M (17.06 FT) SOUTHEAST OF AND LEVEL WITH THE ROAD CENTER, 2.1 M
 HU2180'(6.89 FT) SOUTHWEST OF TELEPHONE PEDESTAL NUMBER 6, 1.8 M (5.91 FT)
 HU2180'SOUTHWEST OF UTILITY POLE NUMBER 5, AND 0.6 M (1.97 FT) NORTHWEST OF
 HU2180'A WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH
 HU2180'LOGO CAP.
 HU2180
 HU2180                          STATION RECOVERY (2017)
 HU2180
 HU2180'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2017 (JRO)
 HU2180'RECOVERED GOOD.  ADDITIONAL TIES FOLLOW.  151 FT (46.0 M) SOUTHWEST OF
 HU2180'MAILBOX 23353, 80 FT (24.4 M) EASTERLY AND ACROSS THE ROAD FROM THE
 HU2180'SOUTHWESTERLY OF TWO GATE POSTS, 61 FT (18.6 M) EASTERLY FROM THE
 HU2180'NORTHEASTERLY GATE POST, 0.2 FT (6 CM) BELOW GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2456 ***********************************************************************
 HU2456  DESIGNATION -  H 181
 HU2456  PID         -  HU2456
 HU2456  STATE/COUNTY-  MD/WICOMICO
 HU2456  COUNTRY     -  US
 HU2456  USGS QUAD   -  PITTSVILLE (2016)
 HU2456
 HU2456                         *CURRENT SURVEY CONTROL
 HU2456  ______________________________________________________________________
 HU2456* NAD 83(1986) POSITION- 38 23 14.7    (N) 075 28 16.6    (W)   HD_HELD2
 HU2456* NAVD 88 ORTHO HEIGHT -    25.193 (meters)       82.65  (feet) ADJUSTED
 HU2456  ______________________________________________________________________
 HU2456  GEOID HEIGHT    -        -35.867 (meters)                     GEOID18
 HU2456  DYNAMIC HEIGHT  -         25.177 (meters)       82.60  (feet) COMP
 HU2456  MODELED GRAVITY -    980,006.9   (mgal)                       NAVD 88
 HU2456
 HU2456  VERT ORDER      -  SECOND    CLASS I
 HU2456
 HU2456.The horizontal coordinates were established by autonomous hand held GPS
 HU2456.observations and have an estimated accuracy of +/- 10 meters.
 HU2456
 HU2456.The orthometric height was determined by differential leveling and
 HU2456.adjusted by the NATIONAL GEODETIC SURVEY
 HU2456.in June 1991.
 HU2456
 HU2456.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2456.GEOID18 height accuracy estimate available here.
 HU2456
 HU2456.Click photographs - Photos may exist for this station.
 HU2456
 HU2456.The dynamic height is computed by dividing the NAVD 88
 HU2456.geopotential number by the normal gravity value computed on the
 HU2456.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2456.degrees latitude (g = 980.6199 gals.).
 HU2456
 HU2456.The modeled gravity was interpolated from observed gravity values.
 HU2456
 HU2456;                    North         East    Units  Estimated Accuracy
 HU2456;SPC MD       -    81,125.      533,554.      MT  (+/- 10 meters HH2 GPS)
 HU2456
 HU2456_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5884148906(NAD 83)
 HU2456
 HU2456                          SUPERSEDED SURVEY CONTROL
 HU2456
 HU2456  NGVD 29 (06/12/91)   25.437  (m)           83.45   (f) ADJUSTED    2 1
 HU2456
 HU2456.Superseded values are not recommended for survey control.
 HU2456
 HU2456.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2456.See file dsdata.pdf to determine how the superseded data were derived.
 HU2456
 HU2456_MARKER: I = METAL ROD
 HU2456_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2456_STAMPING: H 181 1990
 HU2456_MARK LOGO: NGS
 HU2456_PROJECTION: RECESSED 2 CENTIMETERS
 HU2456_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2456_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2456_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2456+SATELLITE: SATELLITE OBSERVATIONS - July 19, 2004
 HU2456_ROD/PIPE-DEPTH: 14.6 meters
 HU2456_SLEEVE-DEPTH  : 0.9 meters
 HU2456
 HU2456  HISTORY     - Date     Condition        Report By
 HU2456  HISTORY     - 1990     MONUMENTED       NGS
 HU2456  HISTORY     - 20040719 GOOD             GEOCAC
 HU2456
 HU2456                          STATION DESCRIPTION
 HU2456
 HU2456'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2456'IN PARSONSBURG, AT THE INTERSECTION OF STATE HIGHWAY 346 AND FOREST
 HU2456'GROVE ROAD, 12.9 M (42.32 FT) NORTHWEST OF THE CENTERLINE OF THE ROAD
 HU2456', 6.1 M (20.01 FT) SOUTH OF AND LEVEL WITH THE HIGHWAY CENTERLINE, 1.3
 HU2456'M (4.27 FT) SOUTH OF UTILITY POLE NUMBER 232, AND 0.4 M (1.31 FT)
 HU2456'NORTH OF A WITNESS POST.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2456'5-INCH LOGO CAP.
 HU2456
 HU2456                          STATION RECOVERY (2004)
 HU2456
 HU2456'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2456'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2351 ***********************************************************************
 HU2351  DESIGNATION -  H 182
 HU2351  PID         -  HU2351
 HU2351  STATE/COUNTY-  MD/WICOMICO
 HU2351  COUNTRY     -  US
 HU2351  USGS QUAD   -  SALISBURY (2016)
 HU2351
 HU2351                         *CURRENT SURVEY CONTROL
 HU2351  ______________________________________________________________________
 HU2351* NAD 83(1986) POSITION- 38 17 12.     (N) 075 35 10.     (W)   SCALED
 HU2351* NAVD 88 ORTHO HEIGHT -    14.161 (meters)       46.46  (feet) ADJUSTED
 HU2351  ______________________________________________________________________
 HU2351  GEOID HEIGHT    -        -35.959 (meters)                     GEOID18
 HU2351  DYNAMIC HEIGHT  -         14.152 (meters)       46.43  (feet) COMP
 HU2351  MODELED GRAVITY -    979,997.0   (mgal)                       NAVD 88
 HU2351
 HU2351  VERT ORDER      -  SECOND    CLASS I
 HU2351
 HU2351.The horizontal coordinates were scaled from a map and have
 HU2351.an estimated accuracy of +/- 6 seconds.
 HU2351
 HU2351.The orthometric height was determined by differential leveling and
 HU2351.adjusted by the NATIONAL GEODETIC SURVEY
 HU2351.in June 1991.
 HU2351
 HU2351.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2351.GEOID18 height accuracy estimate available here.
 HU2351
 HU2351.Click photographs - Photos may exist for this station.
 HU2351
 HU2351.The dynamic height is computed by dividing the NAVD 88
 HU2351.geopotential number by the normal gravity value computed on the
 HU2351.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2351.degrees latitude (g = 980.6199 gals.).
 HU2351
 HU2351.The modeled gravity was interpolated from observed gravity values.
 HU2351
 HU2351;                    North         East    Units  Estimated Accuracy
 HU2351;SPC MD       -    69,780.      523,700.      MT  (+/- 180 meters Scaled)
 HU2351
 HU2351_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH487377(NAD 83)
 HU2351
 HU2351                          SUPERSEDED SURVEY CONTROL
 HU2351
 HU2351  NGVD 29 (06/12/91)   14.415  (m)           47.29   (f) ADJUSTED    2 1
 HU2351
 HU2351.Superseded values are not recommended for survey control.
 HU2351
 HU2351.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2351.See file dsdata.pdf to determine how the superseded data were derived.
 HU2351
 HU2351_MARKER: I = METAL ROD
 HU2351_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2351_STAMPING: H 182 1989
 HU2351_MARK LOGO: NGS
 HU2351_PROJECTION: FLUSH
 HU2351_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2351_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2351_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2351+SATELLITE: SATELLITE OBSERVATIONS - 1989
 HU2351_ROD/PIPE-DEPTH: 21.9 meters
 HU2351_SLEEVE-DEPTH  : 0.9 meters
 HU2351
 HU2351  HISTORY     - Date     Condition        Report By
 HU2351  HISTORY     - 1989     MONUMENTED       NGS
 HU2351
 HU2351                          STATION DESCRIPTION
 HU2351
 HU2351'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU2351'0.9 KM (0.56 MI) NORTHEASTERLY ALONG DIVISION STREET FROM ITS JUNCTION
 HU2351'WITH U.S. HIGHWAY 13 IN FRUITLAND, THENCE 4.4 KM (2.73 MI)
 HU2351'SOUTHEASTERLY ALONG ST LUKES ROAD, 38.4 M (125.98 FT) NORTHWEST OF
 HU2351'UTILITY POLE NUMBER 731-115-40-13, 34.8 M (114.17 FT) SOUTHWEST OF
 HU2351'THE SOUTH CORNER OF A HOUSE, 15.5 M (50.85 FT) SOUTHEAST OF THE
 HU2351'CENTER OF THE NORTHWEST DRIVEWAY, 12.0 M (39.37 FT) NORTHEAST OF THE
 HU2351'CENTER OF THE ROAD, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE
 HU2351'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2351'PROPERTY OWNED BY DAVID LAYFIELD, RT 1 BOX 728, ST LUKES ROAD,
 HU2351'SALISBURY, MD 21801, TELEPHONE NUMBER (301) 742-8234.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2326 ***********************************************************************
 HU2326  DESIGNATION -  H 183
 HU2326  PID         -  HU2326
 HU2326  STATE/COUNTY-  MD/WICOMICO
 HU2326  COUNTRY     -  US
 HU2326  USGS QUAD   -  DELMAR (2016)
 HU2326
 HU2326                         *CURRENT SURVEY CONTROL
 HU2326  ______________________________________________________________________
 HU2326* NAD 83(1986) POSITION- 38 27 23.5    (N) 075 35 38.8    (W)   HD_HELD2
 HU2326* NAVD 88 ORTHO HEIGHT -    13.791 (meters)       45.25  (feet) ADJUSTED
 HU2326  ______________________________________________________________________
 HU2326  GEOID HEIGHT    -        -35.721 (meters)                     GEOID18
 HU2326  DYNAMIC HEIGHT  -         13.783 (meters)       45.22  (feet) COMP
 HU2326  MODELED GRAVITY -    980,012.7   (mgal)                       NAVD 88
 HU2326
 HU2326  VERT ORDER      -  SECOND    CLASS I
 HU2326
 HU2326.The horizontal coordinates were established by autonomous hand held GPS
 HU2326.observations and have an estimated accuracy of +/- 10 meters.
 HU2326
 HU2326.The orthometric height was determined by differential leveling and
 HU2326.adjusted by the NATIONAL GEODETIC SURVEY
 HU2326.in June 1991.
 HU2326
 HU2326.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2326.GEOID18 height accuracy estimate available here.
 HU2326
 HU2326.Click photographs - Photos may exist for this station.
 HU2326
 HU2326.The dynamic height is computed by dividing the NAVD 88
 HU2326.geopotential number by the normal gravity value computed on the
 HU2326.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2326.degrees latitude (g = 980.6199 gals.).
 HU2326
 HU2326.The modeled gravity was interpolated from observed gravity values.
 HU2326
 HU2326;                    North         East    Units  Estimated Accuracy
 HU2326;SPC MD       -    88,623.      522,706.      MT  (+/- 10 meters HH2 GPS)
 HU2326
 HU2326_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4816356636(NAD 83)
 HU2326
 HU2326                          SUPERSEDED SURVEY CONTROL
 HU2326
 HU2326  NGVD 29 (06/12/91)   14.041  (m)           46.07   (f) ADJUSTED    2 1
 HU2326
 HU2326.Superseded values are not recommended for survey control.
 HU2326
 HU2326.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2326.See file dsdata.pdf to determine how the superseded data were derived.
 HU2326
 HU2326_MARKER: I = METAL ROD
 HU2326_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2326_STAMPING: H 183 1990
 HU2326_MARK LOGO: NGS
 HU2326_PROJECTION: FLUSH
 HU2326_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2326_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2326_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2326+SATELLITE: SATELLITE OBSERVATIONS - July 19, 2004
 HU2326_ROD/PIPE-DEPTH: 19.2 meters
 HU2326_SLEEVE-DEPTH  : 0.9 meters
 HU2326
 HU2326  HISTORY     - Date     Condition        Report By
 HU2326  HISTORY     - 1990     MONUMENTED       NGS
 HU2326  HISTORY     - 20040719 GOOD             GEOCAC
 HU2326
 HU2326                          STATION DESCRIPTION
 HU2326
 HU2326'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2326'1.3 KM (0.81 MI) WESTERLY ALONG STATE HIGHWAY 54 FROM ITS JUNCTION
 HU2326'WITH COUNTY ROAD 675 IN DELMAR, THENCE 0.4 M (1.31 FT) WESTERLY ALONG
 HU2326'WEST MARYLAND-DELAWARE LINE ROAD, 25.4 M (83.33 FT) SOUTHWEST OF
 HU2326'UTILITY POLE NUMBER 47032 96467, 16.3 M (53.48 FT) WEST OF THE CENTER
 HU2326'OF A DRIVEWAY, 7.4 M (24.28 FT) SOUTH OF THE CENTER OF THE ROAD, 2.4
 HU2326'M (7.87 FT) SOUTHEAST OF A FENCE CORNER, 1.6 M (5.25 FT) EAST OF A
 HU2326'WITNESS POST AND FENCE, AND LEVEL WITH THE ROAD.  NOTE--ACCESS TO THE
 HU2326'DATUM POINT IS THROUGH A 5-INCH LOGO CAP.  THE MONUMENT IS ON
 HU2326'PROPERTY OWNED BY IVAN WAITE, RT 4 BOX 507, DELMAR, MD, 21875,
 HU2326'TELEPHONE NUMBER (301) 896-2773.
 HU2326
 HU2326                          STATION RECOVERY (2004)
 HU2326
 HU2326'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2326'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2286 ***********************************************************************
 HU2286  DESIGNATION -  H 184
 HU2286  PID         -  HU2286
 HU2286  STATE/COUNTY-  MD/WICOMICO
 HU2286  COUNTRY     -  US
 HU2286  USGS QUAD   -  EDEN (2016)
 HU2286
 HU2286                         *CURRENT SURVEY CONTROL
 HU2286  ______________________________________________________________________
 HU2286* NAD 83(1986) POSITION- 38 20 56.     (N) 075 43 13.     (W)   SCALED
 HU2286* NAVD 88 ORTHO HEIGHT -     4.695 (meters)       15.40  (feet) ADJUSTED
 HU2286  ______________________________________________________________________
 HU2286  GEOID HEIGHT    -        -35.760 (meters)                     GEOID18
 HU2286  DYNAMIC HEIGHT  -          4.692 (meters)       15.39  (feet) COMP
 HU2286  MODELED GRAVITY -    980,004.0   (mgal)                       NAVD 88
 HU2286
 HU2286  VERT ORDER      -  SECOND    CLASS I
 HU2286
 HU2286.The horizontal coordinates were scaled from a map and have
 HU2286.an estimated accuracy of +/- 6 seconds.
 HU2286
 HU2286.The orthometric height was determined by differential leveling and
 HU2286.adjusted by the NATIONAL GEODETIC SURVEY
 HU2286.in June 1991.
 HU2286
 HU2286.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2286.GEOID18 height accuracy estimate available here.
 HU2286
 HU2286.Click photographs - Photos may exist for this station.
 HU2286
 HU2286.The dynamic height is computed by dividing the NAVD 88
 HU2286.geopotential number by the normal gravity value computed on the
 HU2286.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2286.degrees latitude (g = 980.6199 gals.).
 HU2286
 HU2286.The modeled gravity was interpolated from observed gravity values.
 HU2286
 HU2286;                    North         East    Units  Estimated Accuracy
 HU2286;SPC MD       -    76,510.      511,860.      MT  (+/- 180 meters Scaled)
 HU2286
 HU2286_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH370447(NAD 83)
 HU2286
 HU2286                          SUPERSEDED SURVEY CONTROL
 HU2286
 HU2286  NGVD 29 (06/12/91)    4.947  (m)           16.23   (f) ADJUSTED    2 1
 HU2286
 HU2286.Superseded values are not recommended for survey control.
 HU2286
 HU2286.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2286.See file dsdata.pdf to determine how the superseded data were derived.
 HU2286
 HU2286_MARKER: I = METAL ROD
 HU2286_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2286_STAMPING: H 184 1990
 HU2286_MARK LOGO: NGS
 HU2286_PROJECTION: FLUSH
 HU2286_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2286_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2286_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2286+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2286_ROD/PIPE-DEPTH: 17.0 meters
 HU2286_SLEEVE-DEPTH  : 0.9 meters
 HU2286
 HU2286  HISTORY     - Date     Condition        Report By
 HU2286  HISTORY     - 1990     MONUMENTED       NGS
 HU2286
 HU2286                          STATION DESCRIPTION
 HU2286
 HU2286'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2286'10.6 KM (6.59 MI) SOUTHEASTERLY ALONG PEMBERTON DRIVE FROM THE
 HU2286'JUNCTION OF ELLEGOOD STREET IN SALISBURY, 44.8 M (146.98 FT) NORTH OF
 HU2286'A UTILITY POLE, 17.7 M (58.07 FT) SOUTH OF UTILITY POLE NUMBER 92590,
 HU2286'9.0 M (29.53 FT) WEST OF THE CENTER OF THE DRIVE, 0.3 M (0.98 FT)
 HU2286'EAST OF A WITNESS POST, AND LEVEL WITH THE DRIVE.  NOTE--ACCESS TO
 HU2286'THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6820 ***********************************************************************
 DG6820  DESIGNATION -  H 185 RESET
 DG6820  PID         -  DG6820
 DG6820  STATE/COUNTY-  MD/WICOMICO
 DG6820  COUNTRY     -  US
 DG6820  USGS QUAD   -  EDEN (2016)
 DG6820
 DG6820                         *CURRENT SURVEY CONTROL
 DG6820  ______________________________________________________________________
 DG6820* NAD 83(1986) POSITION- 38 22 26.9    (N) 075 44 36.6    (W)   HD_HELD2
 DG6820* NAVD 88 ORTHO HEIGHT -     4.783 (meters)       15.69  (feet) ADJUSTED
 DG6820  ______________________________________________________________________
 DG6820  GEOID HEIGHT    -        -35.699 (meters)                     GEOID18
 DG6820  DYNAMIC HEIGHT  -          4.780 (meters)       15.68  (feet) COMP
 DG6820  MODELED GRAVITY -    980,007.3   (mgal)                       NAVD 88
 DG6820
 DG6820  VERT ORDER      -  SECOND    CLASS I
 DG6820
 DG6820.The horizontal coordinates were established by autonomous hand held GPS
 DG6820.observations and have an estimated accuracy of +/- 10 meters.
 DG6820
 DG6820.The orthometric height was determined by differential leveling and
 DG6820.adjusted by the NATIONAL GEODETIC SURVEY
 DG6820.in December 2004.
 DG6820
 DG6820.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6820.GEOID18 height accuracy estimate available here.
 DG6820
 DG6820.Click photographs - Photos may exist for this station.
 DG6820
 DG6820.The dynamic height is computed by dividing the NAVD 88
 DG6820.geopotential number by the normal gravity value computed on the
 DG6820.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6820.degrees latitude (g = 980.6199 gals.).
 DG6820
 DG6820.The modeled gravity was interpolated from observed gravity values.
 DG6820
 DG6820;                    North         East    Units  Estimated Accuracy
 DG6820;SPC MD       -    79,288.      509,794.      MT  (+/- 10 meters HH2 GPS)
 DG6820
 DG6820_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3505547589(NAD 83)
 DG6820
 DG6820                          SUPERSEDED SURVEY CONTROL
 DG6820
 DG6820.No superseded survey control is available for this station.
 DG6820
 DG6820_MARKER: DD = SURVEY DISK
 DG6820_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6820_STAMPING: H 185 RESET 2001
 DG6820_MARK LOGO: MDSHA
 DG6820_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6820_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6820+STABILITY: SURFACE MOTION
 DG6820_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6820+SATELLITE: SATELLITE OBSERVATIONS - September 08, 2005
 DG6820
 DG6820  HISTORY     - Date     Condition        Report By
 DG6820  HISTORY     - 2001     MONUMENTED       MDSHA
 DG6820  HISTORY     - 20050908 GOOD             GEOCAC
 DG6820
 DG6820                          STATION DESCRIPTION
 DG6820
 DG6820'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (MRA)
 DG6820'THE STATION IS LOCATED IN QUANTICO, MARYLAND. OWNERSHIP--U.S.
 DG6820'GOVERNMENT.  TO REACH THE STATION FROM THE INTERSECTION OF STATE
 DG6820'HIGHWAY 347 AND CHERRY WALK ROAD, GO WESTERLY ON CHERRY WALK ROAD FOR
 DG6820'0.08 MI (0.13 KM) TO THE NEW POST OFFICE AND THE STATION ON THE LEFT.
 DG6820'THE MARK IS 58.5 FT (17.8 M) SOUTH OF POWERPOLE NUMBER 42726-93501,
 DG6820'51.7 FT (15.8 M) NORTHWEST OF THE WEST CORNER OF THE POST OFFICE, 48.8
 DG6820'FT (14.9 M) NORTHWEST OF A FLAGPOLE, 27.7 FT (8.4 M) SOUTH-SOUTHEAST
 DG6820'OF THE CENTER LINE OF CHERRY WALK ROAD, AND SET IN THE TOP OF A 12
 DG6820'INCH (30 CM) ROUND CONCRETE POST FLUSH WITH THE GROUND.
 DG6820
 DG6820                          STATION RECOVERY (2005)
 DG6820
 DG6820'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 DG6820'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2150 ***********************************************************************
 HU2150  DESIGNATION -  H 186
 HU2150  PID         -  HU2150
 HU2150  STATE/COUNTY-  MD/WICOMICO
 HU2150  COUNTRY     -  US
 HU2150  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2150
 HU2150                         *CURRENT SURVEY CONTROL
 HU2150  ______________________________________________________________________
 HU2150* NAD 83(1986) POSITION- 38 25 13.9    (N) 075 48 21.9    (W)   HD_HELD2
 HU2150* NAVD 88 ORTHO HEIGHT -     2.664 (meters)        8.74  (feet) ADJUSTED
 HU2150  ______________________________________________________________________
 HU2150  GEOID HEIGHT    -        -35.583 (meters)                     GEOID18
 HU2150  DYNAMIC HEIGHT  -          2.663 (meters)        8.74  (feet) COMP
 HU2150  MODELED GRAVITY -    980,011.3   (mgal)                       NAVD 88
 HU2150
 HU2150  VERT ORDER      -  SECOND    CLASS I
 HU2150
 HU2150.The horizontal coordinates were established by autonomous hand held GPS
 HU2150.observations and have an estimated accuracy of +/- 10 meters.
 HU2150
 HU2150.The orthometric height was determined by differential leveling and
 HU2150.adjusted by the NATIONAL GEODETIC SURVEY
 HU2150.in June 1991.
 HU2150
 HU2150.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2150.GEOID18 height accuracy estimate available here.
 HU2150
 HU2150.Click photographs - Photos may exist for this station.
 HU2150
 HU2150.The dynamic height is computed by dividing the NAVD 88
 HU2150.geopotential number by the normal gravity value computed on the
 HU2150.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2150.degrees latitude (g = 980.6199 gals.).
 HU2150
 HU2150.The modeled gravity was interpolated from observed gravity values.
 HU2150
 HU2150;                    North         East    Units  Estimated Accuracy
 HU2150;SPC MD       -    84,363.      504,258.      MT  (+/- 10 meters HH2 GPS)
 HU2150
 HU2150_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2963352782(NAD 83)
 HU2150
 HU2150                          SUPERSEDED SURVEY CONTROL
 HU2150
 HU2150  NGVD 29 (06/12/91)    2.910  (m)            9.55   (f) ADJUSTED    2 1
 HU2150
 HU2150.Superseded values are not recommended for survey control.
 HU2150
 HU2150.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2150.See file dsdata.pdf to determine how the superseded data were derived.
 HU2150
 HU2150_MARKER: F = FLANGE-ENCASED ROD
 HU2150_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2150_STAMPING: H 186 1990
 HU2150_MARK LOGO: NGS
 HU2150_PROJECTION: RECESSED 3 CENTIMETERS
 HU2150_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2150_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2150_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2150+SATELLITE: SATELLITE OBSERVATIONS - July 17, 2018
 HU2150_ROD/PIPE-DEPTH: 9.1 meters
 HU2150_SLEEVE-DEPTH  : 0.9 meters
 HU2150
 HU2150  HISTORY     - Date     Condition        Report By
 HU2150  HISTORY     - 1990     MONUMENTED       NGS
 HU2150  HISTORY     - 20180717 GOOD             ARCSHE
 HU2150
 HU2150                          STATION DESCRIPTION
 HU2150
 HU2150'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2150'1.2 KM (0.75 MI) SOUTHEASTERLY ALONG U.S. HIGHWAY 50 FROM THE
 HU2150'JUNCTION OF STATE HIGHWAY 54 IN MARDELA SPRINGS, THENCE 5.8 KM (3.60
 HU2150'MI) SOUTHWESTERLY ALONG ATHOL ROAD, THENCE 2.4 KM (1.49 MI)
 HU2150'SOUTHEASTERLY ALONG HURLEY NECK ROAD, 22.2 M (72.83 FT) SOUTHWEST OF
 HU2150'THE NORTHWEST CORNER OF A MODULAR HOME, 10.0 M (32.81 FT)
 HU2150'SOUTH-SOUTHEAST OF THE CENTER OF THE DRIVEWAY, 8.3 M (27.23 FT)
 HU2150'NORTHEAST OF THE CENTER OF THE ROAD, AND 0.2 M (0.66 FT) BELOW THE
 HU2150'LEVEL OF THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2150'5-INCH LOGO CAP.
 HU2150
 HU2150                          STATION RECOVERY (2018)
 HU2150
 HU2150'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 HU2150'IT IS 26.5 FT (8.1 M) NORTHEAST OF THE PROJECT NORTHEAST SIDE OF A
 HU2150'MODULAR HOME AND ON THE SOUTHERLY SIDE OF A LARGE JUNIPER BUSH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2262 ***********************************************************************
 HU2262  DESIGNATION -  H 187
 HU2262  PID         -  HU2262
 HU2262  STATE/COUNTY-  MD/WICOMICO
 HU2262  COUNTRY     -  US
 HU2262  USGS QUAD   -  NANTICOKE (2016)
 HU2262
 HU2262                         *CURRENT SURVEY CONTROL
 HU2262  ______________________________________________________________________
 HU2262* NAD 83(1986) POSITION- 38 17 13.6    (N) 075 53 44.6    (W)   HD_HELD2
 HU2262* NAVD 88 ORTHO HEIGHT -     2.919 (meters)        9.58  (feet) ADJUSTED
 HU2262  ______________________________________________________________________
 HU2262  GEOID HEIGHT    -        -35.706 (meters)                     GEOID18
 HU2262  DYNAMIC HEIGHT  -          2.917 (meters)        9.57  (feet) COMP
 HU2262  MODELED GRAVITY -    979,993.1   (mgal)                       NAVD 88
 HU2262
 HU2262  VERT ORDER      -  SECOND    CLASS I
 HU2262
 HU2262.The horizontal coordinates were established by autonomous hand held GPS
 HU2262.observations and have an estimated accuracy of +/- 10 meters.
 HU2262
 HU2262.The orthometric height was determined by differential leveling and
 HU2262.adjusted by the NATIONAL GEODETIC SURVEY
 HU2262.in June 1991.
 HU2262
 HU2262.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2262.GEOID18 height accuracy estimate available here.
 HU2262
 HU2262.Click photographs - Photos may exist for this station.
 HU2262
 HU2262.The dynamic height is computed by dividing the NAVD 88
 HU2262.geopotential number by the normal gravity value computed on the
 HU2262.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2262.degrees latitude (g = 980.6199 gals.).
 HU2262
 HU2262.The modeled gravity was interpolated from observed gravity values.
 HU2262
 HU2262;                    North         East    Units  Estimated Accuracy
 HU2262;SPC MD       -    69,456.      496,610.      MT  (+/- 10 meters HH2 GPS)
 HU2262
 HU2262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2166438050(NAD 83)
 HU2262
 HU2262                          SUPERSEDED SURVEY CONTROL
 HU2262
 HU2262  NGVD 29 (06/12/91)    3.173  (m)           10.41   (f) ADJUSTED    2 1
 HU2262
 HU2262.Superseded values are not recommended for survey control.
 HU2262
 HU2262.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2262.See file dsdata.pdf to determine how the superseded data were derived.
 HU2262
 HU2262_MARKER: F = FLANGE-ENCASED ROD
 HU2262_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2262_STAMPING: H 187 1990
 HU2262_MARK LOGO: NGS
 HU2262_PROJECTION: RECESSED 11 CENTIMETERS
 HU2262_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2262_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2262_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2262+SATELLITE: SATELLITE OBSERVATIONS - May 14, 2019
 HU2262_ROD/PIPE-DEPTH: 9.1 meters
 HU2262_SLEEVE-DEPTH  : 0.9 meters
 HU2262
 HU2262  HISTORY     - Date     Condition        Report By
 HU2262  HISTORY     - 1990     MONUMENTED       NGS
 HU2262  HISTORY     - 20190514 GOOD             PROFLN
 HU2262
 HU2262                          STATION DESCRIPTION
 HU2262
 HU2262'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2262'2.2 KM (1.37 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 349 FROM THE POST
 HU2262'OFFICE IN BIVALVE, 27.3 M (89.57 FT) SOUTH OF THE SOUTH CORNER OF A
 HU2262'HOUSE, 8.7 M (28.54 FT) NORTHWEST OF AND LEVEL WITH THE HIGHWAY
 HU2262'CENTERLINE, 8.6 M (28.22 FT) NORTHEAST OF THE CENTER OF COVE ROAD,
 HU2262'AND 1.6 M (5.25 FT) NORTHWEST OF UTILITY POLE NUMBER 38327 90360.
 HU2262'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
 HU2262
 HU2262                          STATION RECOVERY (2019)
 HU2262
 HU2262'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU2262'THE MARK IS AT THE NORTH CORNER OF NANTICOKE RD (SR 349) AND COVE ROAD
 HU2262'TO THE WEST.  IT IS 10 FT (3.0 M) EAST OF A WOOD SIGN 'READMORE', 4.5
 HU2262'FT (1.4 M) WEST OF A POLE, 2.5 FT (0.8 M) NORTH OF THE NORTH CORNER OF
 HU2262'A STONE BENCH SEAT.  THE LOGO CAP IS RECESSED 0.3 FT (9 CM) THE HINGE
 HU2262'IS BROKEN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2408 ***********************************************************************
 HU2408  DESIGNATION -  H 188
 HU2408  PID         -  HU2408
 HU2408  STATE/COUNTY-  MD/WICOMICO
 HU2408  COUNTRY     -  US
 HU2408  USGS QUAD   -  DELMAR (2016)
 HU2408
 HU2408                         *CURRENT SURVEY CONTROL
 HU2408  ______________________________________________________________________
 HU2408* NAD 83(1986) POSITION- 38 25 53.     (N) 075 31 57.     (W)   SCALED
 HU2408* NAVD 88 ORTHO HEIGHT -    14.241 (meters)       46.72  (feet) ADJUSTED
 HU2408  ______________________________________________________________________
 HU2408  GEOID HEIGHT    -        -35.778 (meters)                     GEOID18
 HU2408  DYNAMIC HEIGHT  -         14.232 (meters)       46.69  (feet) COMP
 HU2408  MODELED GRAVITY -    980,010.9   (mgal)                       NAVD 88
 HU2408
 HU2408  VERT ORDER      -  SECOND    CLASS I
 HU2408
 HU2408.The horizontal coordinates were scaled from a map and have
 HU2408.an estimated accuracy of +/- 6 seconds.
 HU2408
 HU2408.The orthometric height was determined by differential leveling and
 HU2408.adjusted by the NATIONAL GEODETIC SURVEY
 HU2408.in June 1991.
 HU2408
 HU2408.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2408.GEOID18 height accuracy estimate available here.
 HU2408
 HU2408.Click photographs - Photos may exist for this station.
 HU2408
 HU2408.The dynamic height is computed by dividing the NAVD 88
 HU2408.geopotential number by the normal gravity value computed on the
 HU2408.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2408.degrees latitude (g = 980.6199 gals.).
 HU2408
 HU2408.The modeled gravity was interpolated from observed gravity values.
 HU2408
 HU2408;                    North         East    Units  Estimated Accuracy
 HU2408;SPC MD       -    85,920.      528,130.      MT  (+/- 180 meters Scaled)
 HU2408
 HU2408_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH535538(NAD 83)
 HU2408
 HU2408                          SUPERSEDED SURVEY CONTROL
 HU2408
 HU2408  NGVD 29 (06/12/91)   14.493  (m)           47.55   (f) ADJUSTED    2 1
 HU2408
 HU2408.Superseded values are not recommended for survey control.
 HU2408
 HU2408.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2408.See file dsdata.pdf to determine how the superseded data were derived.
 HU2408
 HU2408_MARKER: I = METAL ROD
 HU2408_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2408_STAMPING: H 188 1990
 HU2408_MARK LOGO: NGS
 HU2408_PROJECTION: RECESSED 3 CENTIMETERS
 HU2408_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2408_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2408_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2408+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2408_ROD/PIPE-DEPTH: 28.0 meters
 HU2408_SLEEVE-DEPTH  : 0.9 meters
 HU2408
 HU2408  HISTORY     - Date     Condition        Report By
 HU2408  HISTORY     - 1990     MONUMENTED       NGS
 HU2408
 HU2408                          STATION DESCRIPTION
 HU2408
 HU2408'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2408'2.8 KM (1.74 MI) EASTERLY ALONG ZION ROAD FROM THE JUNCTION OF U.S.
 HU2408'HIGHWAY 13 BUSINESS IN SALISBURY, THENCE 2.3 KM (1.43 MI) NORTHERLY
 HU2408'ALONG BROWN ROAD, THENCE 0.2 KM (0.12 MI) NORTHWEST ALONG DAGSBORO
 HU2408'ROAD, THENCE 1.7 KM (1.06 MI) NORTHEASTERLY ALONG RUM RIDGE ROAD,
 HU2408'39.9 M (130.91 FT) SOUTHWEST OF THE CENTER OF A DRIVEWAY, 30.2 M
 HU2408'(99.08 FT) SOUTHWEST OF UTILITY POLE NUMBER 5245 86, 8.6 M
 HU2408'(28.22 FT) NORTHWEST OF AND LEVEL WITH THE CENTER OF THE ROAD, 1.9 M
 HU2408'(6.23 FT) SOUTH OF A T-FENCE CORNER, AND 0.7 M (2.30 FT) SOUTHEAST OF
 HU2408'A WITNESS POST AND FENCE.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH
 HU2408'A 5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY HERBERT LOWE
 HU2408', RT. 3 BOX 100, RUM RIDGE ROAD, DELMAR, MD 21875, TELEPHONE NUMBER
 HU2408'(301) 896-2794.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2416 ***********************************************************************
 HU2416  DESIGNATION -  H 189
 HU2416  PID         -  HU2416
 HU2416  STATE/COUNTY-  MD/WICOMICO
 HU2416  COUNTRY     -  US
 HU2416  USGS QUAD   -  PITTSVILLE (2016)
 HU2416
 HU2416                         *CURRENT SURVEY CONTROL
 HU2416  ______________________________________________________________________
 HU2416* NAD 83(1986) POSITION- 38 23 39.     (N) 075 28 19.     (W)   SCALED
 HU2416* NAVD 88 ORTHO HEIGHT -    24.587 (meters)       80.67  (feet) ADJUSTED
 HU2416  ______________________________________________________________________
 HU2416  GEOID HEIGHT    -        -35.857 (meters)                     GEOID18
 HU2416  DYNAMIC HEIGHT  -         24.572 (meters)       80.62  (feet) COMP
 HU2416  MODELED GRAVITY -    980,007.6   (mgal)                       NAVD 88
 HU2416
 HU2416  VERT ORDER      -  SECOND    CLASS I
 HU2416
 HU2416.The horizontal coordinates were scaled from a map and have
 HU2416.an estimated accuracy of +/- 6 seconds.
 HU2416
 HU2416.The orthometric height was determined by differential leveling and
 HU2416.adjusted by the NATIONAL GEODETIC SURVEY
 HU2416.in June 1991.
 HU2416
 HU2416.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2416.GEOID18 height accuracy estimate available here.
 HU2416
 HU2416.Click photographs - Photos may exist for this station.
 HU2416
 HU2416.The dynamic height is computed by dividing the NAVD 88
 HU2416.geopotential number by the normal gravity value computed on the
 HU2416.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2416.degrees latitude (g = 980.6199 gals.).
 HU2416
 HU2416.The modeled gravity was interpolated from observed gravity values.
 HU2416
 HU2416;                    North         East    Units  Estimated Accuracy
 HU2416;SPC MD       -    81,870.      533,480.      MT  (+/- 180 meters Scaled)
 HU2416
 HU2416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH587496(NAD 83)
 HU2416
 HU2416                          SUPERSEDED SURVEY CONTROL
 HU2416
 HU2416  NGVD 29 (06/12/91)   24.830  (m)           81.46   (f) ADJUSTED    2 1
 HU2416
 HU2416.Superseded values are not recommended for survey control.
 HU2416
 HU2416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2416.See file dsdata.pdf to determine how the superseded data were derived.
 HU2416
 HU2416_MARKER: I = METAL ROD
 HU2416_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 HU2416_STAMPING: H 189 1990
 HU2416_MARK LOGO: NGS
 HU2416_PROJECTION: RECESSED 2 CENTIMETERS
 HU2416_MAGNETIC: I = MARKER IS A STEEL ROD
 HU2416_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HU2416_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2416+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HU2416_ROD/PIPE-DEPTH: 10.8 meters
 HU2416_SLEEVE-DEPTH  : 0.9 meters
 HU2416
 HU2416  HISTORY     - Date     Condition        Report By
 HU2416  HISTORY     - 1990     MONUMENTED       NGS
 HU2416
 HU2416                          STATION DESCRIPTION
 HU2416
 HU2416'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2416'0.8 KM (0.50 MI) NORTHERLY ALONG PARSONSBURG MELSON ROAD FROM THE
 HU2416'JUNCTION OF STATE HIGHWAY 346 (OCEAN CITY ROAD) IN PARSONSBURG, 21.7
 HU2416'M (71.19 FT) EAST OF THE SOUTHEAST CORNER OF A HOUSE, 9.6 M
 HU2416'(31.50 FT) NORTH OF THE CENTER OF A DRIVEWAY, 7.2 M (23.62 FT) WEST
 HU2416'OF AND LEVEL WITH THE ROAD CENTER, 5.8 M (19.03 FT) NORTH OF UTILITY
 HU2416'POLE NUMBER 50512 94178, AND 4.8 M (15.75 FT) NORTH OF UTILITY
 HU2416'PEDESTAL NUMBER 18.  NOTE--ACCESS TO THE DATUM POINT IS THROUGH A
 HU2416'5-INCH LOGO CAP.  THE MONUMENT IS ON PROPERTY OWNED BY P. BRITTINGHAM
 HU2416', RT 2 BOX 344, PARSONSBURG, MD 21849, TELEPHONE NUMBER (301)
 HU2416'543-9216.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0416 ***********************************************************************
 JW0416  DESIGNATION -  H 19
 JW0416  PID         -  JW0416
 JW0416  STATE/COUNTY-  MD/ALLEGANY
 JW0416  COUNTRY     -  US
 JW0416  USGS QUAD   -  LONACONING (2016)
 JW0416
 JW0416                         *CURRENT SURVEY CONTROL
 JW0416  ______________________________________________________________________
 JW0416* NAD 83(1986) POSITION- 39 31 11.     (N) 078 53 38.     (W)   SCALED
 JW0416* NAVD 88 ORTHO HEIGHT -   218.697 (meters)      717.51  (feet) ADJUSTED
 JW0416  ______________________________________________________________________
 JW0416  GEOID HEIGHT    -        -32.463 (meters)                     GEOID18
 JW0416  DYNAMIC HEIGHT  -        218.562 (meters)      717.07  (feet) COMP
 JW0416  MODELED GRAVITY -    980,006.3   (mgal)                       NAVD 88
 JW0416
 JW0416  VERT ORDER      -  SECOND    CLASS 0
 JW0416
 JW0416.The horizontal coordinates were scaled from a map and have
 JW0416.an estimated accuracy of +/- 6 seconds.
 JW0416
 JW0416.The orthometric height was determined by differential leveling and
 JW0416.adjusted by the NATIONAL GEODETIC SURVEY
 JW0416.in June 1991.
 JW0416
 JW0416.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0416.GEOID18 height accuracy estimate available here.
 JW0416
 JW0416.Click photographs - Photos may exist for this station.
 JW0416
 JW0416.The dynamic height is computed by dividing the NAVD 88
 JW0416.geopotential number by the normal gravity value computed on the
 JW0416.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0416.degrees latitude (g = 980.6199 gals.).
 JW0416
 JW0416.The modeled gravity was interpolated from observed gravity values.
 JW0416
 JW0416;                    North         East    Units  Estimated Accuracy
 JW0416;SPC MD       -   207,390.      237,160.      MT  (+/- 180 meters Scaled)
 JW0416
 JW0416_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD810765(NAD 83)
 JW0416
 JW0416                          SUPERSEDED SURVEY CONTROL
 JW0416
 JW0416  NGVD 29 (??/??/92)  218.887  (m)          718.13   (f) ADJ UNCH    2 0
 JW0416
 JW0416.Superseded values are not recommended for survey control.
 JW0416
 JW0416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0416.See file dsdata.pdf to determine how the superseded data were derived.
 JW0416
 JW0416_MARKER: DB = BENCH MARK DISK
 JW0416_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JW0416+WITH SETTING: PAVEMENT
 JW0416_SP_SET: SIGNAL POST BASE
 JW0416_STAMPING: H 19 1934
 JW0416_MARK LOGO: CGS
 JW0416_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0416+STABILITY: SURFACE MOTION
 JW0416
 JW0416  HISTORY     - Date     Condition        Report By
 JW0416  HISTORY     - 1934     MONUMENTED       CGS
 JW0416  HISTORY     - 1935     GOOD             CGS
 JW0416  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0416
 JW0416                          STATION DESCRIPTION
 JW0416
 JW0416'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 JW0416'1.5 MI SE FROM RAWLINGS.
 JW0416'1.5 MILES SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JW0416'RAWLINGS, ALLEGANY COUNTY, 216 YARDS NORTH OF MILEPOST B 193-W 186,
 JW0416'AT SIGNAL POST 1929, IN THE TOP OF THE SOUTHEAST CORNER OF THE
 JW0416'BASE, AND 4 YARDS WEST OF THE CENTER LINE OF THE SOUTH-BOUND TRACK.
 JW0416'A STANDARD DISK, STAMPED H 19 1934.
 JW0416
 JW0416                          STATION RECOVERY (1935)
 JW0416
 JW0416'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935
 JW0416'RECOVERED IN GOOD CONDITION.
 JW0416
 JW0416                          STATION RECOVERY (1983)
 JW0416
 JW0416'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0416'NOT RECOVERED, NEW TRACKS HAVE BEEN LAID, NO SIGN OF THE MARK COULD BE
 JW0416'FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8800 ***********************************************************************
 HV8800  DESIGNATION -  H 190
 HV8800  PID         -  HV8800
 HV8800  STATE/COUNTY-  MD/CHARLES
 HV8800  COUNTRY     -  US
 HV8800  USGS QUAD   -  NANJEMOY (2016)
 HV8800
 HV8800                         *CURRENT SURVEY CONTROL
 HV8800  ______________________________________________________________________
 HV8800* NAD 83(1986) POSITION- 38 23 21.     (N) 077 12 44.     (W)   SCALED
 HV8800* NAVD 88 ORTHO HEIGHT -    21.336 (meters)       70.00  (feet) ADJUSTED
 HV8800  ______________________________________________________________________
 HV8800  GEOID HEIGHT    -        -32.767 (meters)                     GEOID18
 HV8800  DYNAMIC HEIGHT  -         21.323 (meters)       69.96  (feet) COMP
 HV8800  MODELED GRAVITY -    980,030.7   (mgal)                       NAVD 88
 HV8800
 HV8800  VERT ORDER      -  FIRST     CLASS II
 HV8800
 HV8800.The horizontal coordinates were scaled from a map and have
 HV8800.an estimated accuracy of +/- 6 seconds.
 HV8800
 HV8800.The orthometric height was determined by differential leveling and
 HV8800.adjusted by the NATIONAL GEODETIC SURVEY
 HV8800.in June 1991.
 HV8800
 HV8800.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8800.GEOID18 height accuracy estimate available here.
 HV8800
 HV8800.Click photographs - Photos may exist for this station.
 HV8800
 HV8800.The dynamic height is computed by dividing the NAVD 88
 HV8800.geopotential number by the normal gravity value computed on the
 HV8800.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8800.degrees latitude (g = 980.6199 gals.).
 HV8800
 HV8800.The modeled gravity was interpolated from observed gravity values.
 HV8800
 HV8800;                    North         East    Units  Estimated Accuracy
 HV8800;SPC MD       -    80,220.      381,460.      MT  (+/- 180 meters Scaled)
 HV8800
 HV8800_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH067513(NAD 83)
 HV8800
 HV8800                          SUPERSEDED SURVEY CONTROL
 HV8800
 HV8800.No superseded survey control is available for this station.
 HV8800
 HV8800_MARKER: F = FLANGE-ENCASED ROD
 HV8800_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8800_STAMPING: H 190 1990
 HV8800_MARK LOGO: NGS
 HV8800_PROJECTION: RECESSED 8 CENTIMETERS
 HV8800_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8800_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8800_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8800+SATELLITE: SATELLITE OBSERVATIONS - July 11, 2018
 HV8800_ROD/PIPE-DEPTH: 12.0 meters
 HV8800
 HV8800  HISTORY     - Date     Condition        Report By
 HV8800  HISTORY     - 1990     MONUMENTED       NGS
 HV8800  HISTORY     - 20180711 GOOD             NGS
 HV8800
 HV8800                          STATION DESCRIPTION
 HV8800
 HV8800'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8800'18.2 KM (11.31 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 6 FROM THE
 HV8800'JUNCTION OF U.S. HIGHWAY 301 IN LA PLATA, THENCE 7.7 KM (4.78 MI)
 HV8800'SOUTHWESTERLY ALONG STATE HIGHWAY 425, THENCE 2.4 KM (1.49 MI)
 HV8800'SOUTHERLY ALONG STATE HIGHWAY 6, THENCE 3.7 KM (2.30 MI)
 HV8800'SOUTHWESTERLY ALONG MARYLAND POINT ROAD, 39.7 M (130.25 FT) NORTHEAST
 HV8800'OF UTILITY POLE NUMBER 56, 29.1 M (95.47 FT) SOUTH-SOUTHWEST OF THE
 HV8800'CENTER OF A DRIVEWAY, 8.4 M (27.56 FT) SOUTHEAST OF THE CENTER OF THE
 HV8800'ROAD, 0.3 M (0.98 FT) NORTHWEST OF A WITNESS POST, AND 0.3 M (0.98
 HV8800'FT) ABOVE THE LEVEL OF THE ROAD.  NOTE--ACCESS TO THE DATUM POINT IS
 HV8800'THROUGH A 5-INCH LOGO CAP.
 HV8800
 HV8800                          STATION RECOVERY (2018)
 HV8800
 HV8800'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2018 (RWA)
 HV8800'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8791 ***********************************************************************
 HV8791  DESIGNATION -  H 191
 HV8791  PID         -  HV8791
 HV8791  STATE/COUNTY-  MD/CHARLES
 HV8791  COUNTRY     -  US
 HV8791  USGS QUAD   -  MATHIAS POINT (2019)
 HV8791
 HV8791                         *CURRENT SURVEY CONTROL
 HV8791  ______________________________________________________________________
 HV8791* NAD 83(1986) POSITION- 38 29 06.     (N) 077 06 55.     (W)   SCALED
 HV8791* NAVD 88 ORTHO HEIGHT -    37.197 (meters)      122.04  (feet) ADJUSTED
 HV8791  ______________________________________________________________________
 HV8791  GEOID HEIGHT    -        -32.804 (meters)                     GEOID18
 HV8791  DYNAMIC HEIGHT  -         37.175 (meters)      121.97  (feet) COMP
 HV8791  MODELED GRAVITY -    980,042.3   (mgal)                       NAVD 88
 HV8791
 HV8791  VERT ORDER      -  FIRST     CLASS II
 HV8791
 HV8791.The horizontal coordinates were scaled from a map and have
 HV8791.an estimated accuracy of +/- 6 seconds.
 HV8791
 HV8791.The orthometric height was determined by differential leveling and
 HV8791.adjusted by the NATIONAL GEODETIC SURVEY
 HV8791.in June 1991.
 HV8791
 HV8791.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8791.GEOID18 height accuracy estimate available here.
 HV8791
 HV8791.Click photographs - Photos may exist for this station.
 HV8791
 HV8791.The dynamic height is computed by dividing the NAVD 88
 HV8791.geopotential number by the normal gravity value computed on the
 HV8791.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8791.degrees latitude (g = 980.6199 gals.).
 HV8791
 HV8791.The modeled gravity was interpolated from observed gravity values.
 HV8791
 HV8791;                    North         East    Units  Estimated Accuracy
 HV8791;SPC MD       -    90,850.      389,940.      MT  (+/- 180 meters Scaled)
 HV8791
 HV8791_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH155617(NAD 83)
 HV8791
 HV8791                          SUPERSEDED SURVEY CONTROL
 HV8791
 HV8791.No superseded survey control is available for this station.
 HV8791
 HV8791_MARKER: I = METAL ROD
 HV8791_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 HV8791_STAMPING: H 191 1990
 HV8791_MARK LOGO: NGS
 HV8791_PROJECTION: FLUSH
 HV8791_MAGNETIC: I = MARKER IS A STEEL ROD
 HV8791_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV8791_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8791+SATELLITE: SATELLITE OBSERVATIONS - 1990
 HV8791_ROD/PIPE-DEPTH: 7.2 meters
 HV8791
 HV8791  HISTORY     - Date     Condition        Report By
 HV8791  HISTORY     - 1990     MONUMENTED       NGS
 HV8791
 HV8791                          STATION DESCRIPTION
 HV8791
 HV8791'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8791'13.8 KM (8.57 MI) WESTERLY ALONG STATE HIGHWAY 6 FROM ITS JUNCTION
 HV8791'WITH U.S. HIGHWAY 301 IN LA PLATA, 31.4 M (103.02 FT) WEST OF THE
 HV8791'CENTER OF A DRIVEWAY, 17.8 M (58.40 FT) WEST OF THE SOUTHWEST CORNER
 HV8791'OF A CONCRETE CULVERT HEADWALL, 12.4 M (40.68 FT) SOUTH OF THE
 HV8791'CENTERLINE OF THE HIGHWAY, 0.3 M (0.98 FT) ABOVE THE LEVEL OF THE
 HV8791'HIGHWAY, AND 0.3 M (0.98 FT) NORTH-NORTHEAST OF A WITNESS POST.
 HV8791'NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8862 ***********************************************************************
 HV8862  DESIGNATION -  H 192
 HV8862  PID         -  HV8862
 HV8862  STATE/COUNTY-  MD/ST MARYS
 HV8862  COUNTRY     -  US
 HV8862  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV8862
 HV8862                         *CURRENT SURVEY CONTROL
 HV8862  ______________________________________________________________________
 HV8862* NAD 83(1986) POSITION- 38 12 30.     (N) 076 25 36.     (W)   SCALED
 HV8862* NAVD 88 ORTHO HEIGHT -    32.698 (meters)      107.28  (feet) ADJUSTED
 HV8862  ______________________________________________________________________
 HV8862  GEOID HEIGHT    -        -34.725 (meters)                     GEOID18
 HV8862  DYNAMIC HEIGHT  -         32.677 (meters)      107.21  (feet) COMP
 HV8862  MODELED GRAVITY -    979,998.4   (mgal)                       NAVD 88
 HV8862
 HV8862  VERT ORDER      -  SECOND    CLASS I
 HV8862
 HV8862.The horizontal coordinates were scaled from a map and have
 HV8862.an estimated accuracy of +/- 6 seconds.
 HV8862
 HV8862.The orthometric height was determined by differential leveling and
 HV8862.adjusted by the NATIONAL GEODETIC SURVEY
 HV8862.in June 1991.
 HV8862
 HV8862.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8862.GEOID18 height accuracy estimate available here.
 HV8862
 HV8862.Click photographs - Photos may exist for this station.
 HV8862
 HV8862.The dynamic height is computed by dividing the NAVD 88
 HV8862.geopotential number by the normal gravity value computed on the
 HV8862.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV8862.degrees latitude (g = 980.6199 gals.).
 HV8862
 HV8862.The modeled gravity was interpolated from observed gravity values.
 HV8862
 HV8862;                    North         East    Units  Estimated Accuracy
 HV8862;SPC MD       -    60,290.      450,220.      MT  (+/- 180 meters Scaled)
 HV8862
 HV8862_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH750298(NAD 83)
 HV8862
 HV8862                          SUPERSEDED SURVEY CONTROL
 HV8862
 HV8862.No superseded survey control is available for this station.
 HV8862
 HV8862_MARKER: DV = VERTICAL CONTROL DISK
 HV8862_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8862_STAMPING: H 192 1990
 HV8862_MARK LOGO: NGS
 HV8862_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8862_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8862+STABILITY: SURFACE MOTION
 HV8862_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8862+SATELLITE: SATELLITE OBSERVATIONS - April 16, 2005
 HV8862
 HV8862  HISTORY     - Date     Condition        Report By
 HV8862  HISTORY     - 1990     MONUMENTED       NGS
 HV8862  HISTORY     - 19990214 GOOD             USPSQD
 HV8862  HISTORY     - 20020329 GOOD             MDSHA
 HV8862  HISTORY     - 20050416 GOOD             USPSQD
 HV8862
 HV8862                          STATION DESCRIPTION
 HV8862
 HV8862'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HV8862'7.6 KM (4.7 MI) EASTERLY ALONG STATE HIGHWAY 5 FROM FROM THE JUNCTION
 HV8862'OF STATE HIGHWAY 246 IN GREAT MILLS, 16.2 M (53.1 FT) SOUTH OF
 HV8862'UTILITY POLE NUMBER 131, 10.2 M (33.5 FT) NORTH OF THE CENTER OF
 HV8862'BERNE WAY, 9.7 M (31.8 FT) WEST OF THE HIGHWAY CENTERLINE, 0.5 M
 HV8862'(1.6 FT) EAST OF A WITNESS POST, 0.3 M (1.0 FT) ABOVE THE LEVEL OF
 HV8862'THE HIGHWAY, AND THE MONUMENT PROJECTS 0.05 M (0.16 FT) ABOVE THE
 HV8862'GROUND SURFACE.
 HV8862
 HV8862                          STATION RECOVERY (1999)
 HV8862
 HV8862'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV8862'RECOVERED IN GOOD CONDITION.
 HV8862
 HV8862                          STATION RECOVERY (2002)
 HV8862
 HV8862'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HV8862'RECOVERED AS DESCRIBED.
 HV8862
 HV8862                          STATION RECOVERY (2005)
 HV8862
 HV8862'RECOVERY NOTE BY US POWER SQUADRON 2005 (TPF)
 HV8862'HV8862
 HV8862'
 HV8862'THE DESCRIPTION HAS BEEN MODIFIED TO REFLECT ADDITIONAL REFERENCED
 HV8862'POINTS AND DISTANCES
 HV8862'
 HV8862'THE STATION IS LOCATED ALONG STATE HIGHWAY 5, 4.7 MI (7.6 KM)
 HV8862'SOUTHEASTERLY OF THE INTERSECTION OF STATE HIGHWAYS 5 AND 246 (GREAT
 HV8862'MILLS ROAD).
 HV8862'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 246 AND 5
 HV8862'(LEONARDTOWN POINT LOOKOUT ROAD) AT GREAT MILLS, MD., GO SOUTHEAST ON
 HV8862'STATE HIGHWAY 5 FOR 4.7 MI (7.6 KM) TO STATION ON THE RIGHT.  STATION
 HV8862'IS  33.5 FT (10.2 M) NORTH OF THE CENTERLINE OF BERNE WAY.
 HV8862'STATION IS 53.1 FT (16.2 M) SOUTH OF UTILITY POLE NUMBER 131, 32.4 FT
 HV8862'(9.9 M) WEST OF HIGHWAY 5 CENTERLINE, 1.6 FT (0.5 M) EAST OF A WITNESS
 HV8862'POST, 1.0 FT (0.3 M) ABOVE THE LEVEL OF THE HIGHWAY, AND THE MONUMENT
 HV8862'PROJECTS 0.25 FT (0.08 M) ABOVE THE GROUND SURFACE.
 HV8862'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6652 ***********************************************************************
 JV6652  DESIGNATION -  H 194
 JV6652  PID         -  JV6652
 JV6652  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6652  COUNTRY     -  US
 JV6652  USGS QUAD   -  ROUND BAY (2016)
 JV6652
 JV6652                         *CURRENT SURVEY CONTROL
 JV6652  ______________________________________________________________________
 JV6652* NAD 83(1986) POSITION- 39 00 18.     (N) 076 33 30.     (W)   SCALED
 JV6652* NAVD 88 ORTHO HEIGHT -    38.770 (meters)      127.20  (feet) ADJUSTED
 JV6652  ______________________________________________________________________
 JV6652  GEOID HEIGHT    -        -33.149 (meters)                     GEOID18
 JV6652  DYNAMIC HEIGHT  -         38.749 (meters)      127.13  (feet) COMP
 JV6652  MODELED GRAVITY -    980,072.9   (mgal)                       NAVD 88
 JV6652
 JV6652  VERT ORDER      -  SECOND    CLASS I
 JV6652
 JV6652.The horizontal coordinates were scaled from a map and have
 JV6652.an estimated accuracy of +/- 6 seconds.
 JV6652
 JV6652.The orthometric height was determined by differential leveling and
 JV6652.adjusted by the NATIONAL GEODETIC SURVEY
 JV6652.in August 1994.
 JV6652
 JV6652.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6652.GEOID18 height accuracy estimate available here.
 JV6652
 JV6652.Click photographs - Photos may exist for this station.
 JV6652
 JV6652.The dynamic height is computed by dividing the NAVD 88
 JV6652.geopotential number by the normal gravity value computed on the
 JV6652.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6652.degrees latitude (g = 980.6199 gals.).
 JV6652
 JV6652.The modeled gravity was interpolated from observed gravity values.
 JV6652
 JV6652;                    North         East    Units  Estimated Accuracy
 JV6652;SPC MD       -   148,650.      438,260.      MT  (+/- 180 meters Scaled)
 JV6652
 JV6652_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ650184(NAD 83)
 JV6652
 JV6652                          SUPERSEDED SURVEY CONTROL
 JV6652
 JV6652.No superseded survey control is available for this station.
 JV6652
 JV6652_MARKER: DV = VERTICAL CONTROL DISK
 JV6652_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6652_STAMPING: H 194 1991
 JV6652_MARK LOGO: NGS
 JV6652_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6652_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6652+STABILITY: SURFACE MOTION
 JV6652
 JV6652  HISTORY     - Date     Condition        Report By
 JV6652  HISTORY     - 1991     MONUMENTED       NGS
 JV6652
 JV6652                          STATION DESCRIPTION
 JV6652
 JV6652'DESCRIBED BY NATIONAL GEODETIC SURVEY 1991
 JV6652'THE MARKER IS LOCATED ABOUT 3.2 KM (2.0 MI) NORTH OF PAROLE, 4.8 KM
 JV6652'(3.0 MI) SOUTH OF CROWNSVILLE AND ON THE EAST RIGHT-OF-WAY OF STATE
 JV6652'HIGHWAY 178.
 JV6652'TO REACH FROM THE POST OFFICE IN CROWNSVILLE, GO SOUTHERLY ON STATE
 JV6652'HIGHWAY 178 FOR 5.0 KM (3.1 MI) TO THE MARKER ON THE LEFT.
 JV6652'THE DISK IS SET IN THE TOP OF A 0.3 M (1.0 FT) ROUND CONCRETE MONUMENT
 JV6652'WHICH IS RECESSED 0.03 M (0.10 FT) BELOW THE SURFACE OF THE GROUND.
 JV6652'IT IS 17.4 M (57.1 FT) NORTHEAST OF THE CENTER OF STATE HIGHWAY 178,
 JV6652'23.6 M (77.4 FT) NORTHWEST OF THE CENTER OF A TRAFFIC ISLAND FOR
 JV6652'CARRIAGE HILL PARKWAY, 10.2 M (33.5 FT) NORTHWEST OF A POWERLINE POLE
 JV6652'NUMBERED 204937, 16.2 M (53.1 FT) SOUTHEAST OF A FENCE CORNER AND 0.5
 JV6652'M (1.6 FT) SOUTH OF A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 UA0013 ***********************************************************************
 UA0013  DESIGNATION -  H 195
 UA0013  PID         -  UA0013
 UA0013  STATE/COUNTY-  MD/QUEEN ANNES
 UA0013  COUNTRY     -  US
 UA0013  USGS QUAD   -  QUEENSTOWN (2016)
 UA0013
 UA0013                         *CURRENT SURVEY CONTROL
 UA0013  ______________________________________________________________________
 UA0013* NAD 83(1986) POSITION- 38 59 37.4    (N) 076 08 03.4    (W)   HD_HELD2
 UA0013* NAVD 88 ORTHO HEIGHT -     7.238 (meters)       23.75  (feet) ADJUSTED
 UA0013  ______________________________________________________________________
 UA0013  GEOID HEIGHT    -        -33.873 (meters)                     GEOID18
 UA0013  DYNAMIC HEIGHT  -          7.234 (meters)       23.73  (feet) COMP
 UA0013  MODELED GRAVITY -    980,080.6   (mgal)                       NAVD 88
 UA0013
 UA0013  VERT ORDER      -  SECOND    CLASS I
 UA0013
 UA0013.The horizontal coordinates were established by autonomous hand held GPS
 UA0013.observations and have an estimated accuracy of +/- 10 meters.
 UA0013
 UA0013.The orthometric height was determined by differential leveling and
 UA0013.adjusted by the NATIONAL GEODETIC SURVEY
 UA0013.in July 1996.
 UA0013
 UA0013.Significant digits in the geoid height do not necessarily reflect accuracy.
 UA0013.GEOID18 height accuracy estimate available here.
 UA0013
 UA0013.Click photographs - Photos may exist for this station.
 UA0013
 UA0013.The dynamic height is computed by dividing the NAVD 88
 UA0013.geopotential number by the normal gravity value computed on the
 UA0013.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 UA0013.degrees latitude (g = 980.6199 gals.).
 UA0013
 UA0013.The modeled gravity was interpolated from observed gravity values.
 UA0013
 UA0013;                    North         East    Units  Estimated Accuracy
 UA0013;SPC MD       -   147,665.      474,996.      MT  (+/- 10 meters HH2 GPS)
 UA0013
 UA0013_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0177016691(NAD 83)
 UA0013
 UA0013                          SUPERSEDED SURVEY CONTROL
 UA0013
 UA0013.No superseded survey control is available for this station.
 UA0013
 UA0013_MARKER: DD = SURVEY DISK
 UA0013_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 UA0013_SP_SET: CULVERT HEADWALL
 UA0013_STAMPING: H 195 1991
 UA0013_MARK LOGO: MDSHA
 UA0013_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 UA0013+STABILITY: SURFACE MOTION
 UA0013_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 UA0013+SATELLITE: SATELLITE OBSERVATIONS - March 06, 2021
 UA0013
 UA0013  HISTORY     - Date     Condition        Report By
 UA0013  HISTORY     - 1991     MONUMENTED       MDSHA
 UA0013  HISTORY     - 19991211 GOOD             USPSQD
 UA0013  HISTORY     - 20010331 GOOD             NGS
 UA0013  HISTORY     - 20130307 GOOD             ARCSHE
 UA0013  HISTORY     - 20210306 GOOD             USPSQD
 UA0013
 UA0013                          STATION DESCRIPTION
 UA0013
 UA0013'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 UA0013'THE MARKER IS LOCATED ABOUT 19 MI (30.6 KM) EAST OF ANNAPOLIS, 1 MI
 UA0013'(1.6 KM) NORTHEAST OF QUEENSTOWN AND ALONG THE SOUTHEAST SIDE OF U.S.
 UA0013'HIGHWAY 301.  IT IS ON ROAD RIGHT-OF-WAY.
 UA0013'
 UA0013'TO REACH FROM THE POST OFFICE IN QUEENSTOWN, GO SOUTH ON STATE HIGHWAY
 UA0013'456 (DEL RHODES AVENUE) FOR 0.25 MI (0.40 KM) TO U.S. HIGHWAY 301.
 UA0013'TURN LEFT AND GO NORTHEAST ON U.S. HIGHWAY 301 FOR 1.1 MI (1.8 KM) TO
 UA0013'THE MARKER ON THE RIGHT.
 UA0013'
 UA0013'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 UA0013'IN A DRILL HOLE IN A 1.3 FT (0.4 M) WIDE CONCRETE HEADWALL FOR A BOX
 UA0013'CULVERT.  IT IS 32.5 FT (9.9 M) SOUTHEAST OF THE CENTER OF THE
 UA0013'NORTHBOUND LANE OF U.S. HIGHWAY 301, 17.5 FT (5.3 M) SOUTHWEST OF THE
 UA0013'NORTHEAST END OF THE HEADWALL, 0.5 FT (0.2 M) NORTHEAST OF THE
 UA0013'SOUTHWEST END OF THE HEADWALL 8.5 FT (2.6 M) SOUTHEAST OF A METAL
 UA0013'GUARDRAIL, 192 FT (58.5 M) SOUTHWEST OF A HIGHWAY MILE MARKER NUMBER
 UA0013'86 AND IT IS ABOUT 3 FT (0.9 M) LOWER THAN THE HIGHWAY.
 UA0013
 UA0013                          STATION RECOVERY (1999)
 UA0013
 UA0013'RECOVERY NOTE BY US POWER SQUADRON 1999
 UA0013'RECOVERED IN GOOD CONDITION.
 UA0013
 UA0013                          STATION RECOVERY (2001)
 UA0013
 UA0013'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 UA0013'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 UA0013
 UA0013                          STATION RECOVERY (2013)
 UA0013
 UA0013'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 UA0013'RECOVERED IN GOOD CONDITION.
 UA0013
 UA0013                          STATION RECOVERY (2021)
 UA0013
 UA0013'RECOVERY NOTE BY US POWER SQUADRON 2021 (DLT)
 UA0013'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4396 ***********************************************************************
 JU4396  DESIGNATION -  H 196
 JU4396  PID         -  JU4396
 JU4396  STATE/COUNTY-  MD/QUEEN ANNES
 JU4396  COUNTRY     -  US
 JU4396  USGS QUAD   -  CHURCH HILL (2017)
 JU4396
 JU4396                         *CURRENT SURVEY CONTROL
 JU4396  ______________________________________________________________________
 JU4396* NAD 83(1986) POSITION- 39 14 33.     (N) 075 52 31.     (W)   SCALED
 JU4396* NAVD 88 ORTHO HEIGHT -    17.169 (meters)       56.33  (feet) ADJUSTED
 JU4396  ______________________________________________________________________
 JU4396  GEOID HEIGHT    -        -33.629 (meters)                     GEOID18
 JU4396  DYNAMIC HEIGHT  -         17.160 (meters)       56.30  (feet) COMP
 JU4396  MODELED GRAVITY -    980,108.8   (mgal)                       NAVD 88
 JU4396
 JU4396  VERT ORDER      -  SECOND    CLASS I
 JU4396
 JU4396.The horizontal coordinates were scaled from a map and have
 JU4396.an estimated accuracy of +/- 6 seconds.
 JU4396
 JU4396.The orthometric height was determined by differential leveling and
 JU4396.adjusted by the NATIONAL GEODETIC SURVEY
 JU4396.in July 1996.
 JU4396
 JU4396.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4396.GEOID18 height accuracy estimate available here.
 JU4396
 JU4396.Click photographs - Photos may exist for this station.
 JU4396
 JU4396.The dynamic height is computed by dividing the NAVD 88
 JU4396.geopotential number by the normal gravity value computed on the
 JU4396.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4396.degrees latitude (g = 980.6199 gals.).
 JU4396
 JU4396.The modeled gravity was interpolated from observed gravity values.
 JU4396
 JU4396;                    North         East    Units  Estimated Accuracy
 JU4396;SPC MD       -   175,530.      497,090.      MT  (+/- 180 meters Scaled)
 JU4396
 JU4396_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ244440(NAD 83)
 JU4396
 JU4396                          SUPERSEDED SURVEY CONTROL
 JU4396
 JU4396.No superseded survey control is available for this station.
 JU4396
 JU4396_MARKER: DD = SURVEY DISK
 JU4396_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4396_STAMPING: H 196 1991
 JU4396_MARK LOGO: MDSHA
 JU4396_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4396_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4396+STABILITY: SURFACE MOTION
 JU4396
 JU4396  HISTORY     - Date     Condition        Report By
 JU4396  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4396  HISTORY     - 20020301 MARK NOT FOUND   USPSQD
 JU4396
 JU4396                          STATION DESCRIPTION
 JU4396
 JU4396'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (CAM)
 JU4396'THE MARKER IS LOCATED ABOUT 2.5 MI (4.0 KM) EAST OF CRUMPTON, 0.5 MI
 JU4396'(0.8 KM) SOUTH OF THE CHESTER RIVER AND 0.4 MI (0.6 KM) SOUTH OF KIRBY
 JU4396'LANDING.  IT IS ON STATE HIGHWAY 544 RIGHT-OF-WAY.
 JU4396'
 JU4396'TO REACH FROM THE POST OFFICE IN CRUMPTON, GO SOUTH ON STATE HIGHWAY
 JU4396'290 FOR 0.75 MI (1.21 KM) TO A CROSSROADS.  TURN LEFT AND GO EAST ON
 JU4396'STATE HIGHWAY 544 FOR 2.2 MI (3.5 KM) TO THE MARKER ON THE LEFT.
 JU4396'
 JU4396'THE MARKER IS A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JU4396'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS
 JU4396'RECESSED ABOUT 0.15 FT (0.05 M) BELOW THE SURFACE OF THE GROUND.  IT
 JU4396'IS 29.5 FT (9.0 M) NORTHEAST OF THE CENTER OF STATE HIGHWAY 544, 290
 JU4396'FT (88.4 M) NORTHWEST OF THE CENTER OF THE SOUTHBOUND LANE OF U.S.
 JU4396'HIGHWAY 301, 19.4 FT (5.9 M) NORTHWEST OF A HIGHWAY SIGN MARKING A
 JU4396'CROSSROADS, 21 FT (6.4 M) SOUTHWEST OF THE EDGE OF A CULTIVATED FIELD,
 JU4396'2.0 FT (0.6 M) SOUTHWEST OF A CARSONITE WITNESS POST AND ABOUT 2.5 FT
 JU4396'(0.8 M) LOWER THAN THE ROAD.
 JU4396
 JU4396                          STATION RECOVERY (2002)
 JU4396
 JU4396'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU4396'REFERENCED HIGHWAY SIGN MARKING CROSSROADS REBUILT AND RELOCATED.
 JU4396'EDGE OF CULTIVATED FIELD INDISTINCT. CARSONITE POST MISSING (SHREDDED
 JU4396'BY ROW MAINTENANCE EQUIPMENT). AREA APPEARS TO HAVE BEEN GRADED AND
 JU4396'FILLED. METAL DETECTOR AND 18 IN. PROBE FAILED TO LOCATE THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6919 ***********************************************************************
 JV6919  DESIGNATION -  H 197
 JV6919  PID         -  JV6919
 JV6919  STATE/COUNTY-  MD/BALTIMORE
 JV6919  COUNTRY     -  US
 JV6919  USGS QUAD   -  MIDDLE RIVER (2016)
 JV6919
 JV6919                         *CURRENT SURVEY CONTROL
 JV6919  ______________________________________________________________________
 JV6919* NAD 83(1986) POSITION- 39 21 43.     (N) 076 28 32.     (W)   SCALED
 JV6919* NAVD 88 ORTHO HEIGHT -    30.754 (meters)      100.90  (feet) ADJUSTED
 JV6919  ______________________________________________________________________
 JV6919  GEOID HEIGHT    -        -32.907 (meters)                     GEOID18
 JV6919  DYNAMIC HEIGHT  -         30.738 (meters)      100.85  (feet) COMP
 JV6919  MODELED GRAVITY -    980,102.4   (mgal)                       NAVD 88
 JV6919
 JV6919  VERT ORDER      -  SECOND    CLASS I
 JV6919
 JV6919.The horizontal coordinates were scaled from a map and have
 JV6919.an estimated accuracy of +/- 6 seconds.
 JV6919
 JV6919.The orthometric height was determined by differential leveling and
 JV6919.adjusted by the NATIONAL GEODETIC SURVEY
 JV6919.in June 1995.
 JV6919
 JV6919.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6919.GEOID18 height accuracy estimate available here.
 JV6919
 JV6919.Click photographs - Photos may exist for this station.
 JV6919
 JV6919.The dynamic height is computed by dividing the NAVD 88
 JV6919.geopotential number by the normal gravity value computed on the
 JV6919.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6919.degrees latitude (g = 980.6199 gals.).
 JV6919
 JV6919.The modeled gravity was interpolated from observed gravity values.
 JV6919
 JV6919;                    North         East    Units  Estimated Accuracy
 JV6919;SPC MD       -   188,320.      445,200.      MT  (+/- 180 meters Scaled)
 JV6919
 JV6919_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ728579(NAD 83)
 JV6919
 JV6919                          SUPERSEDED SURVEY CONTROL
 JV6919
 JV6919.No superseded survey control is available for this station.
 JV6919
 JV6919_MARKER: DD = SURVEY DISK
 JV6919_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV6919+WITH SETTING: PAVEMENT
 JV6919_SP_SET: SIGN BASE
 JV6919_STAMPING: H 197 1991
 JV6919_MARK LOGO: MDSHA
 JV6919_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6919_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6919+STABILITY: SURFACE MOTION
 JV6919
 JV6919  HISTORY     - Date     Condition        Report By
 JV6919  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6919  HISTORY     - 20070324 GOOD             GEOCAC
 JV6919
 JV6919                          STATION DESCRIPTION
 JV6919
 JV6919'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6919'THE MARKER IS LOCATED ABOUT 9 MI (14.5 KM) NORTHEAST OF THE CENTER OF
 JV6919'BALTIMORE, 2 MI (3.2 KM) NORTHEAST OF GOLDEN RING AND ALONG THE
 JV6919'SOUTHEAST SIDE OF INTERSTATE HIGHWAY 95.  TO REACH FROM THE
 JV6919'INTERSTATE HIGHWAY 95 NORTHBOUND TOLL PLAZA WHICH IS LOCATED ON THE
 JV6919'NORTHEAST SIDE OF THE FORT MCHENRY TUNNEL, GO NORTHEAST ON INTERSTATE
 JV6919'HIGHWAY 95 FOR 9.0 MI (14.5 KM) TO THE MARKER ON THE RIGHT, A
 JV6919'MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK IN THE CONCRETE
 JV6919'BASE OF A LARGE HIGHWAY SIGN, 21 FT (6.4 M) SOUTHEAST OF THE MOST
 JV6919'SOUTHEAST EDGE OF THE PAVED SOUTHEAST SHOULDER ALONG THE NORTHBOUND
 JV6919'LANE OF INTERSTATE HIGHWAY 95, 25 FT (7.6 M) SOUTHWEST OF THE CENTER
 JV6919'A DITCH, 65.5 FT (20.0 M) NORTHWEST OF THE SOUTHEAST RIGHT-OF-WAY
 JV6919'FENCE AND ABOUT 5 FT (1.5 M) HIGHER THAN THE ROAD SURFACE.
 JV6919
 JV6919                          STATION RECOVERY (2007)
 JV6919
 JV6919'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JV6919'MARK IS LOCATED AT THE BASE OF THE SUPPORT POST NEAREST THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1590 ***********************************************************************
 JW1590  DESIGNATION -  H 198
 JW1590  PID         -  JW1590
 JW1590  STATE/COUNTY-  MD/GARRETT
 JW1590  COUNTRY     -  US
 JW1590  USGS QUAD   -  TABLE ROCK (2016)
 JW1590
 JW1590                         *CURRENT SURVEY CONTROL
 JW1590  ______________________________________________________________________
 JW1590* NAD 83(1986) POSITION- 39 19 43.     (N) 079 27 30.     (W)   SCALED
 JW1590* NAVD 88 ORTHO HEIGHT -   769.670 (meters)     2525.16  (feet) ADJUSTED
 JW1590  ______________________________________________________________________
 JW1590  GEOID HEIGHT    -        -31.054 (meters)                     GEOID18
 JW1590  DYNAMIC HEIGHT  -        769.137 (meters)     2523.41  (feet) COMP
 JW1590  MODELED GRAVITY -    979,908.6   (mgal)                       NAVD 88
 JW1590
 JW1590  VERT ORDER      -  SECOND    CLASS I
 JW1590
 JW1590.The horizontal coordinates were scaled from a map and have
 JW1590.an estimated accuracy of +/- 6 seconds.
 JW1590
 JW1590.The orthometric height was determined by differential leveling and
 JW1590.adjusted by the NATIONAL GEODETIC SURVEY
 JW1590.in April 1995.
 JW1590
 JW1590.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1590.GEOID18 height accuracy estimate available here.
 JW1590
 JW1590.Click photographs - Photos may exist for this station.
 JW1590
 JW1590.The dynamic height is computed by dividing the NAVD 88
 JW1590.geopotential number by the normal gravity value computed on the
 JW1590.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1590.degrees latitude (g = 980.6199 gals.).
 JW1590
 JW1590.The modeled gravity was interpolated from observed gravity values.
 JW1590
 JW1590;                    North         East    Units  Estimated Accuracy
 JW1590;SPC MD       -   187,340.      188,060.      MT  (+/- 180 meters Scaled)
 JW1590
 JW1590_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD328543(NAD 83)
 JW1590
 JW1590                          SUPERSEDED SURVEY CONTROL
 JW1590
 JW1590.No superseded survey control is available for this station.
 JW1590
 JW1590_MARKER: DD = SURVEY DISK
 JW1590_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JW1590_SP_SET: HEADWALL
 JW1590_STAMPING: H 198 1991
 JW1590_MARK LOGO: MDSHA
 JW1590_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1590_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1590+STABILITY: SURFACE MOTION
 JW1590
 JW1590  HISTORY     - Date     Condition        Report By
 JW1590  HISTORY     - 1991     MONUMENTED       MDSHA
 JW1590  HISTORY     - 19991217 GOOD             MDSHA
 JW1590
 JW1590                          STATION DESCRIPTION
 JW1590
 JW1590'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW1590'THE MARK IS LOCATED ABOUT 1.4 MI (2.3 KM) NORTH-NORTHWEST OF
 JW1590'REDHOUSE, 2.4 MI (3.9 KM) SOUTHWEST OF GORTNER AND ALONG U.S.
 JW1590'HIGHWAY 219.  IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARK FROM THE
 JW1590'POST OFFICE IN OAKLAND, GO SOUTHWEST ON SECOND STREET FOR 0.2 MI (0.3
 JW1590'KM) TO U.S. HIGHWAY 219.  TURN LEFT AND GO SOUTH ON U.S. HIGHWAY
 JW1590'219 FOR 6.8 MI (10.9 KM) TO THE MARK ON THE RIGHT.  THE POINT IS
 JW1590'MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION SURVEY DISK SET
 JW1590'IN THE CENTER OF THE TOP OF A CONCRETE HEADWALL.  IT IS 28.5 FT (8.7
 JW1590'M) NORTHWEST OF THE CENTER OF U.S. HIGHWAY 219, 70 FT (21.3 M) WEST
 JW1590'OF A 30 INCH WILLOW TREE, 43.5 FT (13.3 M) SOUTHWEST OF THE CENTER OF
 JW1590'A GRAVEL ROAD CONNECTION TO BEN DEWITT ROAD, 86 FT (26.2 M) NORTHWEST
 JW1590'OF A POWER POLE NUMBERED WM 195 AND C AND P 25 AND 1.5 FT (0.5 M)
 JW1590'NORTH OF THE WITNESS POST.  IT IS 3.5 FT (1.1 M) BELOW THE SURFACE OF
 JW1590'THE ROAD.
 JW1590
 JW1590                          STATION RECOVERY (1999)
 JW1590
 JW1590'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 JW1590'RECOVERED IN GOOD CONDITION. NOTE--THE MARK IS SCHEDULED TO BE
 JW1590'DESTROYED BY ROAD IMPROVEMENTS AT THE END OF THE 1999 CALENDAR YEAR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ2599 ***********************************************************************
 DJ2599  DESIGNATION -  H 198 RESET
 DJ2599  PID         -  DJ2599
 DJ2599  STATE/COUNTY-  MD/GARRETT
 DJ2599  COUNTRY     -  US
 DJ2599  USGS QUAD   -  TABLE ROCK (2016)
 DJ2599
 DJ2599                         *CURRENT SURVEY CONTROL
 DJ2599  ______________________________________________________________________
 DJ2599* NAD 83(1986) POSITION- 39 19 40.     (N) 079 27 30.     (W)   SCALED
 DJ2599* NAVD 88 ORTHO HEIGHT -   764.739 (meters)     2508.98  (feet) ADJUSTED
 DJ2599  ______________________________________________________________________
 DJ2599  GEOID HEIGHT    -        -31.054 (meters)                     GEOID18
 DJ2599  DYNAMIC HEIGHT  -        764.209 (meters)     2507.24  (feet) COMP
 DJ2599  MODELED GRAVITY -    979,908.4   (mgal)                       NAVD 88
 DJ2599
 DJ2599  VERT ORDER      -  SECOND    CLASS I
 DJ2599
 DJ2599.The horizontal coordinates were scaled from a map and have
 DJ2599.an estimated accuracy of +/- 6 seconds.
 DJ2599
 DJ2599.The orthometric height was determined by differential leveling and
 DJ2599.adjusted by the NATIONAL GEODETIC SURVEY
 DJ2599.in October 2007.
 DJ2599
 DJ2599.No vertical observational check was made to the station.
 DJ2599
 DJ2599.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ2599.GEOID18 height accuracy estimate available here.
 DJ2599
 DJ2599.Click photographs - Photos may exist for this station.
 DJ2599
 DJ2599.The dynamic height is computed by dividing the NAVD 88
 DJ2599.geopotential number by the normal gravity value computed on the
 DJ2599.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DJ2599.degrees latitude (g = 980.6199 gals.).
 DJ2599
 DJ2599.The modeled gravity was interpolated from observed gravity values.
 DJ2599
 DJ2599;                    North         East    Units  Estimated Accuracy
 DJ2599;SPC MD       -   187,250.      188,060.      MT  (+/- 180 meters Scaled)
 DJ2599
 DJ2599_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD328542(NAD 83)
 DJ2599
 DJ2599                          SUPERSEDED SURVEY CONTROL
 DJ2599
 DJ2599.No superseded survey control is available for this station.
 DJ2599
 DJ2599_MARKER: DD = SURVEY DISK
 DJ2599_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ2599_STAMPING: H 198 RESET 1999
 DJ2599_MARK LOGO: MDSHA
 DJ2599_PROJECTION: FLUSH
 DJ2599_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ2599_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ2599+STABILITY: SURFACE MOTION
 DJ2599_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DJ2599+SATELLITE: SATELLITE OBSERVATIONS - 1999
 DJ2599
 DJ2599  HISTORY     - Date     Condition        Report By
 DJ2599  HISTORY     - 1999     MONUMENTED       MDSHA
 DJ2599
 DJ2599                          STATION DESCRIPTION
 DJ2599
 DJ2599'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999
 DJ2599'THE MARK IS LOCATED ABOUT 1.3 MILES (2.1 KM) NORTH OF RED HOUSE, 2.5
 DJ2599'MILES (4.0 KM) SOUTHWEST OF GORTNER AND ALONG U.S.HIGHWAY 219.
 DJ2599'
 DJ2599'TO REACH THE MARK FROM THE POST OFFICE IN OAKLAND, PROCEED SOUTH ALONG
 DJ2599'SECOND STREET FOR 0.2 MILES (0.3 KM) TO U.S.HIGHWAY 219.  TURN LEFT
 DJ2599'AND PROCEED SOUTH ALONG U.S.HIGHWAY 219 FOR 6.9 MILES (11.1 KM) TO THE
 DJ2599'MARK ON THE RIGHT.
 DJ2599'
 DJ2599'IT IS 34.5 FEET (10.5 M) SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY,
 DJ2599'85.9 FEET (26.2 M) SOUTHEAST OF A POWER POLE NUMBER 999, 75.0 FEET
 DJ2599'(22.9 M) SOUTHWEST OF THE SOUTHWEST CORNER OF A CONCRETE SIDEWALK
 DJ2599'LEADING NORTHEAST TO HOUSE NUMBER 4662, 2.7 FEET (0.8 M) NORTHEAST OF
 DJ2599'TELEPHONE POLE NUMBER 210, 1.7 FEET (0.5 M) NORTHEAST OF A CARSONITE
 DJ2599'WITNESS POST, SET IN THE TOP OF A 12-INCH (30 CM) ROUND CONCRETE POST
 DJ2599'LEVEL WITH THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2787 ***********************************************************************
 HU2787  DESIGNATION -  H 199
 HU2787  PID         -  HU2787
 HU2787  STATE/COUNTY-  MD/WORCESTER
 HU2787  COUNTRY     -  US
 HU2787  USGS QUAD   -  BERLIN (2016)
 HU2787
 HU2787                         *CURRENT SURVEY CONTROL
 HU2787  ______________________________________________________________________
 HU2787* NAD 83(1986) POSITION- 38 22 01.8    (N) 075 09 56.2    (W)   HD_HELD2
 HU2787* NAVD 88 ORTHO HEIGHT -     3.356 (meters)       11.01  (feet) ADJUSTED
 HU2787  ______________________________________________________________________
 HU2787  GEOID HEIGHT    -        -35.988 (meters)                     GEOID18
 HU2787  DYNAMIC HEIGHT  -          3.354 (meters)       11.00  (feet) COMP
 HU2787  MODELED GRAVITY -    980,011.2   (mgal)                       NAVD 88
 HU2787
 HU2787  VERT ORDER      -  SECOND    CLASS I
 HU2787
 HU2787.The horizontal coordinates were established by autonomous hand held GPS
 HU2787.observations and have an estimated accuracy of +/- 10 meters.
 HU2787
 HU2787.The orthometric height was determined by differential leveling and
 HU2787.adjusted by the NATIONAL GEODETIC SURVEY
 HU2787.in November 1994.
 HU2787
 HU2787.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2787.GEOID18 height accuracy estimate available here.
 HU2787
 HU2787.Click photographs - Photos may exist for this station.
 HU2787
 HU2787.The dynamic height is computed by dividing the NAVD 88
 HU2787.geopotential number by the normal gravity value computed on the
 HU2787.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2787.degrees latitude (g = 980.6199 gals.).
 HU2787
 HU2787.The modeled gravity was interpolated from observed gravity values.
 HU2787
 HU2787;                    North         East    Units  Estimated Accuracy
 HU2787;SPC MD       -    79,369.      560,300.      MT  (+/- 10 meters HH2 GPS)
 HU2787
 HU2787_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8553246567(NAD 83)
 HU2787
 HU2787                          SUPERSEDED SURVEY CONTROL
 HU2787
 HU2787  NGVD 29 (02/25/92)    3.600  (m)           11.81   (f) ADJUSTED    2 1
 HU2787
 HU2787.Superseded values are not recommended for survey control.
 HU2787
 HU2787.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2787.See file dsdata.pdf to determine how the superseded data were derived.
 HU2787
 HU2787_MARKER: DV = VERTICAL CONTROL DISK
 HU2787_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2787_STAMPING: H 199 1991
 HU2787_MARK LOGO: NGS
 HU2787_PROJECTION: RECESSED 3 CENTIMETERS
 HU2787_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2787_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2787+STABILITY: SURFACE MOTION
 HU2787_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2787+SATELLITE: SATELLITE OBSERVATIONS - February 27, 2013
 HU2787
 HU2787  HISTORY     - Date     Condition        Report By
 HU2787  HISTORY     - 1991     MONUMENTED       MDSHA
 HU2787  HISTORY     - 20020306 MARK NOT FOUND   USPSQD
 HU2787  HISTORY     - 20031229 MARK NOT FOUND   USPSQD
 HU2787  HISTORY     - 20070716 GOOD             MDSHA
 HU2787  HISTORY     - 20130227 GOOD             ARCSHE
 HU2787
 HU2787                          STATION DESCRIPTION
 HU2787
 HU2787'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991 (MRA)
 HU2787'THE MARK IS LOCATED ABOUT 4.13 MI (6.65 KM) NORTHEAST OF BERLIN, 1.40
 HU2787'MI (2.25 KM) SOUTH OF OCEAN PINES AND ON LAND OWNED BY CAROLINE
 HU2787'CROPPER, 10649 RACE TRACK ROAD, BERLIN MD.  PHONE 410-641-5708.  TO
 HU2787'REACH FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 113 NEAR BERLIN,
 HU2787'GO EAST ON U.S. HIGHWAY 50 FOR 2.55 MI (4.10 KM) TO A ROAD LEFT.
 HU2787'TURN LEFT AND GO NORTH ON STATE ROUTE 589 FOR 1.40 MI (2.25 KM) TO
 HU2787'THE MARK ON THE LEFT.  IT IS 75.4 FT (23.0 M) NORTH OF THE CENTER
 HU2787'LINE OF A DRIVEWAY, 49.3 FT (15.0 M) WEST OF THE CENTER LINE OF ROUTE
 HU2787'589, 14.7 FT (4.5 M) SOUTH OF A POWER TRANSFORMER BOX, 12.3 FT (3.7
 HU2787'M) SOUTH OF A CARSONITE WITNESS POST, AND SET IN THE TOP OF A 0.8 FT
 HU2787'(0.2 M) ROUND CONCRETE POST RECESSED 0.1 FT (0.0 M) .
 HU2787
 HU2787                          STATION RECOVERY (2002)
 HU2787
 HU2787'RECOVERY NOTE BY US POWER SQUADRON 2002 (RBD)
 HU2787'MARK NOT FOUND.
 HU2787
 HU2787                          STATION RECOVERY (2003)
 HU2787
 HU2787'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU2787'MARK NOT FOUND.
 HU2787
 HU2787                          STATION RECOVERY (2007)
 HU2787
 HU2787'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MPM)
 HU2787'RECOVERED IN GOOD CONDITION
 HU2787
 HU2787                          STATION RECOVERY (2013)
 HU2787
 HU2787'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 HU2787'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0608 ***********************************************************************
 HV0608  DESIGNATION -  H 2
 HV0608  PID         -  HV0608
 HV0608  STATE/COUNTY-  MD/CHARLES
 HV0608  COUNTRY     -  US
 HV0608  USGS QUAD   -  POPES CREEK (2016)
 HV0608
 HV0608                         *CURRENT SURVEY CONTROL
 HV0608  ______________________________________________________________________
 HV0608* NAD 83(1986) POSITION- 38 26 19.     (N) 076 58 41.     (W)   SCALED
 HV0608* NAVD 88 ORTHO HEIGHT -    47.948 (meters)      157.31  (feet) POSTED
 HV0608  ______________________________________________________________________
 HV0608  GEOID HEIGHT    -        -33.276 (meters)                     GEOID18
 HV0608  DYNAMIC HEIGHT  -         47.92  (meters)      157.2   (feet) COMP
 HV0608  MODELED GRAVITY -    980,009.8   (mgal)                       NAVD 88
 HV0608
 HV0608  VERT ORDER      -  * POSTED, SEE BELOW
 HV0608
 HV0608.The horizontal coordinates were scaled from a map and have
 HV0608.an estimated accuracy of +/- 6 seconds.
 HV0608
 HV0608.The orthometric height was determined by differential leveling
 HV0608.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0608
 HV0608.* This is a POSTED BENCH MARK height.
 HV0608
 HV0608.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0608.GEOID18 height accuracy estimate available here.
 HV0608
 HV0608.Click photographs - Photos may exist for this station.
 HV0608
 HV0608.The dynamic height is computed by dividing the NAVD 88
 HV0608.geopotential number by the normal gravity value computed on the
 HV0608.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0608.degrees latitude (g = 980.6199 gals.).
 HV0608
 HV0608.The modeled gravity was interpolated from observed gravity values.
 HV0608
 HV0608;                    North         East    Units  Estimated Accuracy
 HV0608;SPC MD       -    85,690.      401,920.      MT  (+/- 180 meters Scaled)
 HV0608
 HV0608_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH273563(NAD 83)
 HV0608
 HV0608                          SUPERSEDED SURVEY CONTROL
 HV0608
 HV0608  NGVD 29 (05/01/89)   48.201  (m)          158.14   (f) ADJUSTED    1 2
 HV0608  NGVD 29 (??/??/87)   48.228  (m)          158.23   (f) SUPERSEDED  1 2
 HV0608
 HV0608.Superseded values are not recommended for survey control.
 HV0608
 HV0608.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0608.See file dsdata.pdf to determine how the superseded data were derived.
 HV0608
 HV0608_MARKER: DB = BENCH MARK DISK
 HV0608_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0608_STAMPING: H 2 1917
 HV0608_MARK LOGO: CGS
 HV0608_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0608+STABILITY: SURFACE MOTION
 HV0608
 HV0608  HISTORY     - Date     Condition        Report By
 HV0608  HISTORY     - 1917     MONUMENTED       CGS
 HV0608  HISTORY     - 1931     MARK NOT FOUND   CGS
 HV0608
 HV0608                          STATION DESCRIPTION
 HV0608
 HV0608'DESCRIBED BY COAST AND GEODETIC SURVEY 1917
 HV0608'AT FAULKNER.
 HV0608'AT FAULKNER, (FORMERLY KNOWN AS LOTHAIR), CHARLES COUNTY, ON THE
 HV0608'PENNSYLVANIA RAILROAD, 20 FEET NORTH OF THE STATION, AND 50 FEET
 HV0608'WEST OF THE TRACK.  A STANDARD DISK, STAMPED H 2 1917 AND SET IN
 HV0608'THE TOP OF A CONCRETE POST PROJECTING 2 INCHES ABOVE GROUND.
 HV0608
 HV0608                          STATION RECOVERY (1931)
 HV0608
 HV0608'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1931
 HV0608'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0044 ***********************************************************************
 JV0044  DESIGNATION -  H 20
 JV0044  PID         -  JV0044
 JV0044  STATE/COUNTY-  MD/CECIL
 JV0044  COUNTRY     -  US
 JV0044  USGS QUAD   -  CONOWINGO DAM (2016)
 JV0044
 JV0044                         *CURRENT SURVEY CONTROL
 JV0044  ______________________________________________________________________
 JV0044* NAD 83(1986) POSITION- 39 40 55.     (N) 076 11 48.     (W)   SCALED
 JV0044* NAVD 88 ORTHO HEIGHT -    36.340 (meters)      119.23  (feet) ADJUSTED
 JV0044  ______________________________________________________________________
 JV0044  GEOID HEIGHT    -        -32.889 (meters)                     GEOID18
 JV0044  DYNAMIC HEIGHT  -         36.322 (meters)      119.17  (feet) COMP
 JV0044  MODELED GRAVITY -    980,143.1   (mgal)                       NAVD 88
 JV0044
 JV0044  VERT ORDER      -  FIRST     CLASS II
 JV0044
 JV0044.The horizontal coordinates were scaled from a map and have
 JV0044.an estimated accuracy of +/- 6 seconds.
 JV0044
 JV0044.The orthometric height was determined by differential leveling and
 JV0044.adjusted by the NATIONAL GEODETIC SURVEY
 JV0044.in June 1991.
 JV0044
 JV0044.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0044.GEOID18 height accuracy estimate available here.
 JV0044
 JV0044.Click photographs - Photos may exist for this station.
 JV0044
 JV0044.The dynamic height is computed by dividing the NAVD 88
 JV0044.geopotential number by the normal gravity value computed on the
 JV0044.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0044.degrees latitude (g = 980.6199 gals.).
 JV0044
 JV0044.The modeled gravity was interpolated from observed gravity values.
 JV0044
 JV0044;                    North         East    Units  Estimated Accuracy
 JV0044;SPC MD       -   224,020.      468,920.      MT  (+/- 180 meters Scaled)
 JV0044
 JV0044_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ973931(NAD 83)
 JV0044
 JV0044                          SUPERSEDED SURVEY CONTROL
 JV0044
 JV0044  NGVD 29 (11/26/84)   36.593  (m)          120.06   (f) ADJUSTED    1 2
 JV0044
 JV0044.Superseded values are not recommended for survey control.
 JV0044
 JV0044.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0044.See file dsdata.pdf to determine how the superseded data were derived.
 JV0044
 JV0044_MARKER: DB = BENCH MARK DISK
 JV0044_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0044_SP_SET: BRIDGE
 JV0044_STAMPING: H 20 1955
 JV0044_MARK LOGO: CGS
 JV0044_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0044
 JV0044  HISTORY     - Date     Condition        Report By
 JV0044  HISTORY     - 1955     MONUMENTED       CGS
 JV0044  HISTORY     - 1979     GOOD             NGS
 JV0044  HISTORY     - 19960420 GOOD             USPSQD
 JV0044
 JV0044                          STATION DESCRIPTION
 JV0044
 JV0044'DESCRIBED BY COAST AND GEODETIC SURVEY 1955
 JV0044'1.6 MI NW FROM CONOWINGO DAM.
 JV0044'ABOUT 1.65 MILES NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM
 JV0044'STATION AT CONOWINGO DAM, ABOUT 0.35 MILE SOUTHEAST OF MILE POST
 JV0044'12, IN THE TOP OF THE CONCRETE RAIL FOOTING OF MULTIPLE ARCH
 JV0044'CONCRETE BRIDGE OVER MOUTH OF CONOWINGO CREEK, 16 1/2 FEET
 JV0044'SOUTHWEST OF SOUTHWEST RAIL, 23.3 FEET NORTHWEST OF SOUTHEAST
 JV0044'END OF CONCRETE BANISTER, 0.6 FOOT NORTHEAST OF NORTHEAST FACE
 JV0044'OF CONCRETE BANISTER AND ABOUT 1 FOOT BELOW LEVEL OF TRACK.
 JV0044
 JV0044                          STATION RECOVERY (1979)
 JV0044
 JV0044'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0044'RECOVERED IN GOOD CONDITION.
 JV0044
 JV0044                          STATION RECOVERY (1996)
 JV0044
 JV0044'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0044'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0886 ***********************************************************************
 JV0886  DESIGNATION -  H 25 RESET
 JV0886  PID         -  JV0886
 JV0886  STATE/COUNTY-  MD/PRINCE GEORGES
 JV0886  COUNTRY     -  US
 JV0886  USGS QUAD   -  BELTSVILLE (2016)
 JV0886
 JV0886                         *CURRENT SURVEY CONTROL
 JV0886  ______________________________________________________________________
 JV0886* NAD 83(1986) POSITION- 39 06 00.     (N) 076 53 14.     (W)   SCALED
 JV0886* NAVD 88 ORTHO HEIGHT -   105.29  (meters)      345.4   (feet) RESET
 JV0886  ______________________________________________________________________
 JV0886  GEOID HEIGHT    -        -32.161 (meters)                     GEOID18
 JV0886  VERT ORDER      -  THIRD
 JV0886
 JV0886.The horizontal coordinates were scaled from a map and have
 JV0886.an estimated accuracy of +/- 6 seconds.
 JV0886
 JV0886.The orthometric height was computed from unverified reset data.
 JV0886
 JV0886.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0886.GEOID18 height accuracy estimate available here.
 JV0886
 JV0886.Click photographs - Photos may exist for this station.
 JV0886
 JV0886;                    North         East    Units  Estimated Accuracy
 JV0886;SPC MD       -   159,110.      409,760.      MT  (+/- 180 meters Scaled)
 JV0886
 JV0886_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ368295(NAD 83)
 JV0886
 JV0886                          SUPERSEDED SURVEY CONTROL
 JV0886
 JV0886  NGVD 29 (??/??/??)  105.50   (m)          346.1    (f) RESET       3  
 JV0886
 JV0886.Superseded values are not recommended for survey control.
 JV0886
 JV0886.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0886.See file dsdata.pdf to determine how the superseded data were derived.
 JV0886
 JV0886_MARKER: DB = BENCH MARK DISK
 JV0886_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0886_STAMPING: H 25 RESET 1968
 JV0886_MARK LOGO: CGS
 JV0886_PROJECTION: FLUSH
 JV0886_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0886+STABILITY: SURFACE MOTION
 JV0886
 JV0886  HISTORY     - Date     Condition        Report By
 JV0886  HISTORY     - 1968     MONUMENTED       MDSRC
 JV0886
 JV0886                          STATION DESCRIPTION
 JV0886
 JV0886'DESCRIBED BY MD STATE ROADS COMM 1968
 JV0886'2.1 MI S FROM LAUREL.
 JV0886'2.1 MILES SOUTHWEST ALONG STATE HIGHWAY 198 FROM THE JUNCTION
 JV0886'WITH U.S. HIGHWAY 1 IN LAUREL, 42.8 FEET SOUTH OF THE CENTER
 JV0886'LINE OF STATE HIGHWAY 198, 4.7 FEET SOUTH OF C AND P POLE 83, 26.5
 JV0886'FEET NORTH OF A 6-INCH PINE TREE, SET IN THE TOP OF A CONCRETE
 JV0886'POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0934 ***********************************************************************
 JV0934  DESIGNATION -  H 26
 JV0934  PID         -  JV0934
 JV0934  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0934  COUNTRY     -  US
 JV0934  USGS QUAD   -  RELAY (2016)
 JV0934
 JV0934                         *CURRENT SURVEY CONTROL
 JV0934  ______________________________________________________________________
 JV0934* NAD 83(1986) POSITION- 39 12 57.     (N) 076 38 40.     (W)   SCALED
 JV0934* NAVD 88 ORTHO HEIGHT -    15.431 (meters)       50.63  (feet) ADJUSTED
 JV0934  ______________________________________________________________________
 JV0934  GEOID HEIGHT    -        -32.733 (meters)                     GEOID18
 JV0934  DYNAMIC HEIGHT  -         15.423 (meters)       50.60  (feet) COMP
 JV0934  MODELED GRAVITY -    980,097.2   (mgal)                       NAVD 88
 JV0934
 JV0934  VERT ORDER      -  SECOND    CLASS 0
 JV0934
 JV0934.The horizontal coordinates were scaled from a map and have
 JV0934.an estimated accuracy of +/- 6 seconds.
 JV0934
 JV0934.The orthometric height was determined by differential leveling and
 JV0934.adjusted by the NATIONAL GEODETIC SURVEY
 JV0934.in June 1991.
 JV0934
 JV0934.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0934.GEOID18 height accuracy estimate available here.
 JV0934
 JV0934.Click photographs - Photos may exist for this station.
 JV0934
 JV0934.The dynamic height is computed by dividing the NAVD 88
 JV0934.geopotential number by the normal gravity value computed on the
 JV0934.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0934.degrees latitude (g = 980.6199 gals.).
 JV0934
 JV0934.The modeled gravity was interpolated from observed gravity values.
 JV0934
 JV0934;                    North         East    Units  Estimated Accuracy
 JV0934;SPC MD       -   172,030.      430,710.      MT  (+/- 180 meters Scaled)
 JV0934
 JV0934_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ580420(NAD 83)
 JV0934
 JV0934                          SUPERSEDED SURVEY CONTROL
 JV0934
 JV0934  NGVD 29 (11/26/84)   15.670  (m)           51.41   (f) ADJUSTED    2 0
 JV0934
 JV0934.Superseded values are not recommended for survey control.
 JV0934
 JV0934.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0934.See file dsdata.pdf to determine how the superseded data were derived.
 JV0934
 JV0934_MARKER: DB = BENCH MARK DISK
 JV0934_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0934_STAMPING: H 26 1957
 JV0934_MARK LOGO: CGS
 JV0934_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0934+STABILITY: SURFACE MOTION
 JV0934
 JV0934  HISTORY     - Date     Condition        Report By
 JV0934  HISTORY     - 1957     MONUMENTED       CGS
 JV0934  HISTORY     - 1960     GOOD             CGS
 JV0934  HISTORY     - 20030923 MARK NOT FOUND   USPSQD
 JV0934
 JV0934                          STATION DESCRIPTION
 JV0934
 JV0934'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0934'0.8 MI NE FROM LINTHICUM.
 JV0934'0.35 MILE NORTHEAST ALONG STATE HIGHWAY 170 FROM THE EPISCOPAL
 JV0934'CHURCH AT LINTHICUM, THENCE ABOUT 0.5 MILE NORTHEAST ALONG THE
 JV0934'BALTIMORE AND ANNAPOLIS RAILROAD, 55 FEET SOUTHWEST OF CENTER
 JV0934'LINE OF STATE HIGHWAY 648, 179 FEET SOUTH-SOUTHEAST OF SOUTH
 JV0934'CORNER OF RAILROAD OVERPASS OVER HIGHWAY 648, 54 FEET SOUTH OF
 JV0934'TELEPHONE POLE NO. 176, 4 FEET NORTHEAST OF NORTHEAST LEG OF A
 JV0934'STEEL SIGN POST, 2 FEET NORTHWEST OF A WITNESS POST, AND SET IN
 JV0934'THE TOP OF A CONCRETE POST PROJECTING 2 INCHES.
 JV0934
 JV0934                          STATION RECOVERY (2003)
 JV0934
 JV0934'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0934'NOT FOUND.  NOTE-- HIGHWAY 648 TURNS WEST NORTH OF THE STATION.  THE
 JV0934'STATION IS ALONG BALTIMORE-ANNAPOLIS BLVD.  THE STEEL SIGN POST AND
 JV0934'POLE NUMBER 176 ARE PRESENT.  THE WITNESS POST AND MONUMENT WERE NOT
 JV0934'FOUND UNDER HEAVY BUSH AND VINE GROWTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2980 ***********************************************************************
 JV2980  DESIGNATION -  H 27
 JV2980  PID         -  JV2980
 JV2980  STATE/COUNTY-  MD/FREDERICK
 JV2980  COUNTRY     -  US
 JV2980  USGS QUAD   -  MIDDLETOWN (2016)
 JV2980
 JV2980                         *CURRENT SURVEY CONTROL
 JV2980  ______________________________________________________________________
 JV2980* NAD 83(1986) POSITION- 39 29 20.     (N) 077 32 00.     (W)   SCALED
 JV2980* NAVD 88 ORTHO HEIGHT -   183.733 (meters)      602.80  (feet) ADJUSTED
 JV2980  ______________________________________________________________________
 JV2980  GEOID HEIGHT    -        -33.089 (meters)                     GEOID18
 JV2980  DYNAMIC HEIGHT  -        183.631 (meters)      602.46  (feet) COMP
 JV2980  MODELED GRAVITY -    980,065.8   (mgal)                       NAVD 88
 JV2980
 JV2980  VERT ORDER      -  SECOND    CLASS 0
 JV2980
 JV2980.The horizontal coordinates were scaled from a map and have
 JV2980.an estimated accuracy of +/- 6 seconds.
 JV2980
 JV2980.The orthometric height was determined by differential leveling and
 JV2980.adjusted by the NATIONAL GEODETIC SURVEY
 JV2980.in June 1991.
 JV2980
 JV2980.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2980.GEOID18 height accuracy estimate available here.
 JV2980
 JV2980.Click photographs - Photos may exist for this station.
 JV2980
 JV2980.The dynamic height is computed by dividing the NAVD 88
 JV2980.geopotential number by the normal gravity value computed on the
 JV2980.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2980.degrees latitude (g = 980.6199 gals.).
 JV2980
 JV2980.The modeled gravity was interpolated from observed gravity values.
 JV2980
 JV2980;                    North         East    Units  Estimated Accuracy
 JV2980;SPC MD       -   202,420.      354,120.      MT  (+/- 180 meters Scaled)
 JV2980
 JV2980_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ821740(NAD 83)
 JV2980
 JV2980                          SUPERSEDED SURVEY CONTROL
 JV2980
 JV2980  NGVD 29 (11/26/84)  183.946  (m)          603.50   (f) ADJUSTED    2 0
 JV2980
 JV2980.Superseded values are not recommended for survey control.
 JV2980
 JV2980.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2980.See file dsdata.pdf to determine how the superseded data were derived.
 JV2980
 JV2980_MARKER: DB = BENCH MARK DISK
 JV2980_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2980_SP_SET: BRIDGE
 JV2980_STAMPING: H 27 1958
 JV2980_MARK LOGO: CGS
 JV2980_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2980
 JV2980  HISTORY     - Date     Condition        Report By
 JV2980  HISTORY     - 1958     MONUMENTED       CGS
 JV2980
 JV2980                          STATION DESCRIPTION
 JV2980
 JV2980'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2980'2.4 MI SE FROM MYERSVILLE.
 JV2980'0.5 MILE NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV2980'AT MYERSVILLE, THENCE 1.9 MILES SOUTHEAST ALONG U.S. HIGHWAY
 JV2980'40, AT CONCRETE BRIDGE OVER CATOCTIN CREEK, AT THE NORTHWEST
 JV2980'CORNER OF THE BRIDGE, AT THE NORTHWEST END OF THE NORTHEAST
 JV2980'RAILING, IN THE CURBING, 22.8 FEET NORTHWEST OF THE CENTER LINE
 JV2980'OF THE HIGHWAY, AND 0.4 FOOT HIGHER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0429 ***********************************************************************
 JV0429  DESIGNATION -  H 29
 JV0429  PID         -  JV0429
 JV0429  STATE/COUNTY-  MD/BALTIMORE
 JV0429  COUNTRY     -  US
 JV0429  USGS QUAD   -  WHITE MARSH (2016)
 JV0429
 JV0429                         *CURRENT SURVEY CONTROL
 JV0429  ______________________________________________________________________
 JV0429* NAD 83(1986) POSITION- 39 23 44.0    (N) 076 25 49.6    (W)   HD_HELD2
 JV0429* NAVD 88 ORTHO HEIGHT -    30.109 (meters)       98.78  (feet) ADJUSTED
 JV0429  ______________________________________________________________________
 JV0429  GEOID HEIGHT    -        -32.936 (meters)                     GEOID18
 JV0429  DYNAMIC HEIGHT  -         30.093 (meters)       98.73  (feet) COMP
 JV0429  MODELED GRAVITY -    980,107.1   (mgal)                       NAVD 88
 JV0429
 JV0429  VERT ORDER      -  FIRST     CLASS II
 JV0429
 JV0429.The horizontal coordinates were established by autonomous hand held GPS
 JV0429.observations and have an estimated accuracy of +/- 10 meters.
 JV0429
 JV0429.The orthometric height was determined by differential leveling and
 JV0429.adjusted by the NATIONAL GEODETIC SURVEY
 JV0429.in June 1991.
 JV0429
 JV0429.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0429.GEOID18 height accuracy estimate available here.
 JV0429
 JV0429.Click photographs - Photos may exist for this station.
 JV0429
 JV0429.The dynamic height is computed by dividing the NAVD 88
 JV0429.geopotential number by the normal gravity value computed on the
 JV0429.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0429.degrees latitude (g = 980.6199 gals.).
 JV0429
 JV0429.The modeled gravity was interpolated from observed gravity values.
 JV0429
 JV0429;                    North         East    Units  Estimated Accuracy
 JV0429;SPC MD       -   192,072.      449,062.      MT  (+/- 10 meters HH2 GPS)
 JV0429
 JV0429_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7682561649(NAD 83)
 JV0429
 JV0429                          SUPERSEDED SURVEY CONTROL
 JV0429
 JV0429  NGVD 29 (11/26/84)   30.352  (m)           99.58   (f) ADJUSTED    1 2
 JV0429
 JV0429.Superseded values are not recommended for survey control.
 JV0429
 JV0429.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0429.See file dsdata.pdf to determine how the superseded data were derived.
 JV0429
 JV0429_MARKER: DB = BENCH MARK DISK
 JV0429_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0429_STAMPING: H 29 1958
 JV0429_MARK LOGO: CGS
 JV0429_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0429_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0429+STABILITY: SURFACE MOTION
 JV0429_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0429+SATELLITE: SATELLITE OBSERVATIONS - January 29, 2010
 JV0429
 JV0429  HISTORY     - Date     Condition        Report By
 JV0429  HISTORY     - 1958     MONUMENTED       CGS
 JV0429  HISTORY     - 1959     GOOD             CGS
 JV0429  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0429  HISTORY     - 1979     GOOD             NGS
 JV0429  HISTORY     - 19910904 GOOD             MDSHA
 JV0429  HISTORY     - 20100129 GOOD             MD-005
 JV0429
 JV0429                          STATION DESCRIPTION
 JV0429
 JV0429'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0429'6.4 MI NE FROM GOLDEN RING.
 JV0429'ABOUT 6.0 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE GOLDEN
 JV0429'RING JUNIOR HIGH SCHOOL AT GOLDEN RING, THENCE 0.4 MILE NORTHWEST
 JV0429'ALONG JOPPA ROAD, ABOUT 40 FEET NORTH OF THE NORTH CORNER OF A
 JV0429'SMALL BRIDGE OVER A SMALL CREEK, 30 FEET NORTHEAST OF THE
 JV0429'CENTER LINE OF THE ROAD, 1 FOOT SOUTHWEST OF A FENCE LINE, 1
 JV0429'FEET NORTHEAST OF A METAL WITNESS POST, SET IN THE TOP OF A
 JV0429'CONCRETE POST PROJECTING 3 INCHES ABOVE THE GROUND AND ABOUT 1
 JV0429'FOOT BELOW THE LEVEL OF THE ROAD.
 JV0429
 JV0429                          STATION RECOVERY (1971)
 JV0429
 JV0429'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0429'MARK NOT FOUND.
 JV0429
 JV0429                          STATION RECOVERY (1979)
 JV0429
 JV0429'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV0429'RECOVERED IN GOOD CONDITION.
 JV0429
 JV0429                          STATION RECOVERY (1991)
 JV0429
 JV0429'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV0429'RECOVERED IN GOOD CONDITION.
 JV0429
 JV0429                          STATION RECOVERY (2010)
 JV0429
 JV0429'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2010 (ATA)
 JV0429'THE STATION IS LOCATED 2.3 MILES NORTHEAST OF WHITE MARSH IN BALTIMORE
 JV0429'COUNTY.
 JV0429'
 JV0429'TO REACH THE STATION FROM THE INTERSECTION OF EAST JOPPA ROAD AND
 JV0429'PHILADELPHIA ROAD (MARYLAND ROUTE 7), PROCEED NORTHWEST ALONG EAST
 JV0429'JOPPA ROAD 0.3 MILES TO THE SPLIT OF EAST JOPPA ROAD AND OLD JOPPA
 JV0429'ROAD PROCEED NORTHWEST ABOUT 200 FEET ALONG OLD JOPPA ROAD ACROSS
 JV0429'SMALL STREAM TO THE STATION MARK ON THE RIGHT.
 JV0429'
 JV0429'THE STATION IS 28.4 FEET NORTH OF A POLE NUMBERED 132367 AND 39.5 FEET
 JV0429'SOUTHWEST OF THE WEST END OF A HEADWALL ON THE SOUTHWEST SIDE OF EAST
 JV0429'JOPPA ROAD, ABOUT 450 FEET SOUTHEAST OF THE CENTERLINE OF INTERSTATE
 JV0429'95 AND 15 FEET WEST OF THE STREAM BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8875 ***********************************************************************
 HV8875  DESIGNATION -  H 3 RESET
 HV8875  PID         -  HV8875
 HV8875  STATE/COUNTY-  MD/PRINCE GEORGES
 HV8875  COUNTRY     -  US
 HV8875  USGS QUAD   -  WASHINGTON EAST (2016)
 HV8875
 HV8875                         *CURRENT SURVEY CONTROL
 HV8875  ______________________________________________________________________
 HV8875* NAD 83(1986) POSITION- 38 58 38.     (N) 076 55 44.     (W)   SCALED
 HV8875* NAVD 88 ORTHO HEIGHT -    16.70  (meters)       54.8   (feet) RESET
 HV8875  ______________________________________________________________________
 HV8875  GEOID HEIGHT    -        -32.159 (meters)                     GEOID18
 HV8875  VERT ORDER      -  THIRD
 HV8875
 HV8875.The horizontal coordinates were scaled from a map and have
 HV8875.an estimated accuracy of +/- 6 seconds.
 HV8875
 HV8875.The orthometric height was computed from unverified reset data.
 HV8875
 HV8875.No vertical observational check was made to the station.
 HV8875
 HV8875.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8875.GEOID18 height accuracy estimate available here.
 HV8875
 HV8875.Click photographs - Photos may exist for this station.
 HV8875
 HV8875;                    North         East    Units  Estimated Accuracy
 HV8875;SPC MD       -   145,480.      406,160.      MT  (+/- 180 meters Scaled)
 HV8875
 HV8875_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ329160(NAD 83)
 HV8875
 HV8875                          SUPERSEDED SURVEY CONTROL
 HV8875
 HV8875  NGVD 29 (11/18/05)   16.94   (m)           55.6    (f) RESET       3  
 HV8875
 HV8875.Superseded values are not recommended for survey control.
 HV8875
 HV8875.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8875.See file dsdata.pdf to determine how the superseded data were derived.
 HV8875
 HV8875_MARKER: DV = VERTICAL CONTROL DISK
 HV8875_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8875_STAMPING: H 3 RESET 1989
 HV8875_MARK LOGO: NGS
 HV8875_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8875_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8875+STABILITY: SURFACE MOTION
 HV8875
 HV8875  HISTORY     - Date     Condition        Report By
 HV8875  HISTORY     - 1989     MONUMENTED       NGS
 HV8875
 HV8875                          STATION DESCRIPTION
 HV8875
 HV8875'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HV8875'THE MARK IS LOCATED IN COLLEGE PARK, JUST EAST AND ACROSS THE STREET
 HV8875'FROM THE POST OFFICE.  OWNERSHIP--RAILROAD RIGHT-OF-WAY.
 HV8875'IT IS SET IN THE TOP OF A 0.25 M (0.8 FT) ROUND CONCRETE POST WHICH IS
 HV8875'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 47.2 M (154.9 FT) SOUTH
 HV8875'OF THE CENTERLINE OF THE INTERSECTION OF CALVERT ROAD AND BOWDOIN
 HV8875'AVENUE, 9.1 M (29.9 FT) EAST OF THE CENTERLINE OF BOWDOIN AVENUE, 5.6
 HV8875'M (18.4 FT) WEST OF THE CENTERLINE OF THE SOUTHBOUND TRACK OF THE B
 HV8875'AND O RAILROAD AND 1.9 M (6.2 FT) EAST OF A CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1125 ***********************************************************************
 JV1125  DESIGNATION -  H 30 C OF B
 JV1125  PID         -  JV1125
 JV1125  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1125  COUNTRY     -  US
 JV1125  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1125
 JV1125                         *CURRENT SURVEY CONTROL
 JV1125  ______________________________________________________________________
 JV1125* NAD 83(1986) POSITION- 39 17 32.     (N) 076 34 08.     (W)   SCALED
 JV1125* NAVD 88 ORTHO HEIGHT -    17.600 (meters)       57.74  (feet) ADJUSTED
 JV1125  ______________________________________________________________________
 JV1125  GEOID HEIGHT    -        -32.830 (meters)                     GEOID18
 JV1125  DYNAMIC HEIGHT  -         17.591 (meters)       57.71  (feet) COMP
 JV1125  MODELED GRAVITY -    980,101.2   (mgal)                       NAVD 88
 JV1125
 JV1125  VERT ORDER      -  FIRST     CLASS I
 JV1125
 JV1125.The horizontal coordinates were scaled from a map and have
 JV1125.an estimated accuracy of +/- 6 seconds.
 JV1125
 JV1125.The orthometric height was determined by differential leveling and
 JV1125.adjusted by the NATIONAL GEODETIC SURVEY
 JV1125.in June 1991.
 JV1125
 JV1125.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1125.GEOID18 height accuracy estimate available here.
 JV1125
 JV1125.Click photographs - Photos may exist for this station.
 JV1125
 JV1125.The dynamic height is computed by dividing the NAVD 88
 JV1125.geopotential number by the normal gravity value computed on the
 JV1125.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1125.degrees latitude (g = 980.6199 gals.).
 JV1125
 JV1125.The modeled gravity was interpolated from observed gravity values.
 JV1125
 JV1125;                    North         East    Units  Estimated Accuracy
 JV1125;SPC MD       -   180,540.      437,190.      MT  (+/- 180 meters Scaled)
 JV1125
 JV1125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ647503(NAD 83)
 JV1125
 JV1125                          SUPERSEDED SURVEY CONTROL
 JV1125
 JV1125  NGVD 29 (11/26/84)   17.842  (m)           58.54   (f) ADJUSTED    1 1
 JV1125
 JV1125.Superseded values are not recommended for survey control.
 JV1125
 JV1125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1125.See file dsdata.pdf to determine how the superseded data were derived.
 JV1125
 JV1125_MARKER: DD = SURVEY DISK
 JV1125_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1125_STAMPING: H 30
 JV1125_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV1125_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1125+STABILITY: SURFACE MOTION
 JV1125_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1125+SATELLITE: SATELLITE OBSERVATIONS - June 14, 1996
 JV1125
 JV1125  HISTORY     - Date     Condition        Report By
 JV1125  HISTORY     - UNK      MONUMENTED       MD0050
 JV1125  HISTORY     - 1959     GOOD             CGS
 JV1125  HISTORY     - 1971     GOOD             NGS
 JV1125  HISTORY     - 19960614 GOOD             DMW
 JV1125  HISTORY     - 20020121 MARK NOT FOUND   USPSQD
 JV1125
 JV1125                          STATION DESCRIPTION
 JV1125
 JV1125'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1125'AT BALTIMORE.
 JV1125'AT BALTIMORE, AT THE SOUTHEAST CORNER OF THE INTERSECTION OF
 JV1125'EAST BALTIMORE STREET AND NORTH HIGHLAND AVENUE, 8 FEET SOUTH OF
 JV1125'THE SOUTH CURB OF EAST BALTIMORE STREET, 6 1/2 FEET EAST OF THE
 JV1125'EAST CURB OF NORTH HIGHLAND AVENUE, SET IN THE TOP OF A CONCRETE
 JV1125'POST 2 INCHES BELOW THE LEVEL OF THE SIDEWALK AND PROTECTED
 JV1125'BY A CAST IRON COVER MARKED CITY OF BALTIMORE SURVEY POINT.
 JV1125
 JV1125                          STATION RECOVERY (1971)
 JV1125
 JV1125'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV1125'RECOVERED IN GOOD CONDITION.
 JV1125
 JV1125                          STATION RECOVERY (1996)
 JV1125
 JV1125'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1996 (DMM)
 JV1125'RECOVERED AS DESCRIBED.
 JV1125
 JV1125                          STATION RECOVERY (2002)
 JV1125
 JV1125'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV1125'MARK PROBABLY DESTROYED DURING CONSTRUCTION OF CONCRETE HANDICAPPED
 JV1125'ACCESS RAMP
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0403 ***********************************************************************
 JV0403  DESIGNATION -  H 31
 JV0403  PID         -  JV0403
 JV0403  STATE/COUNTY-  MD/HARFORD
 JV0403  COUNTRY     -  US
 JV0403  USGS QUAD   -  EDGEWOOD (2016)
 JV0403
 JV0403                         *CURRENT SURVEY CONTROL
 JV0403  ______________________________________________________________________
 JV0403* NAD 83(1986) POSITION- 39 26 34.     (N) 076 18 55.     (W)   SCALED
 JV0403* NAVD 88 ORTHO HEIGHT -     9.327 (meters)       30.60  (feet) ADJUSTED
 JV0403  ______________________________________________________________________
 JV0403  GEOID HEIGHT    -        -33.068 (meters)                     GEOID18
 JV0403  DYNAMIC HEIGHT  -          9.322 (meters)       30.58  (feet) COMP
 JV0403  MODELED GRAVITY -    980,105.9   (mgal)                       NAVD 88
 JV0403
 JV0403  VERT ORDER      -  FIRST     CLASS I
 JV0403
 JV0403.The horizontal coordinates were scaled from a map and have
 JV0403.an estimated accuracy of +/- 6 seconds.
 JV0403
 JV0403.The orthometric height was determined by differential leveling and
 JV0403.adjusted by the NATIONAL GEODETIC SURVEY
 JV0403.in June 1991.
 JV0403
 JV0403.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0403.GEOID18 height accuracy estimate available here.
 JV0403
 JV0403.Click photographs - Photos may exist for this station.
 JV0403
 JV0403.The dynamic height is computed by dividing the NAVD 88
 JV0403.geopotential number by the normal gravity value computed on the
 JV0403.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0403.degrees latitude (g = 980.6199 gals.).
 JV0403
 JV0403.The modeled gravity was interpolated from observed gravity values.
 JV0403
 JV0403;                    North         East    Units  Estimated Accuracy
 JV0403;SPC MD       -   197,380.      458,940.      MT  (+/- 180 meters Scaled)
 JV0403
 JV0403_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ868667(NAD 83)
 JV0403
 JV0403                          SUPERSEDED SURVEY CONTROL
 JV0403
 JV0403  NGVD 29 (11/26/84)    9.573  (m)           31.41   (f) ADJUSTED    1 1
 JV0403
 JV0403.Superseded values are not recommended for survey control.
 JV0403
 JV0403.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0403.See file dsdata.pdf to determine how the superseded data were derived.
 JV0403
 JV0403_MARKER: DB = BENCH MARK DISK
 JV0403_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0403_SP_SET: BRIDGE
 JV0403_STAMPING: H 31 1959
 JV0403_MARK LOGO: CGS
 JV0403_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0403
 JV0403  HISTORY     - Date     Condition        Report By
 JV0403  HISTORY     - 1959     MONUMENTED       CGS
 JV0403  HISTORY     - 1971     GOOD             NGS
 JV0403  HISTORY     - 1990     POOR             USPSQD
 JV0403  HISTORY     - 20210805 MARK NOT FOUND   MDSHA
 JV0403
 JV0403                          STATION DESCRIPTION
 JV0403
 JV0403'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0403'1.4 MI NE FROM JOPPA.
 JV0403'ABOUT 1.35 MILES NORTHEAST ALONG STATE HIGHWAY 7 FROM THE
 JV0403'TRINITY LUTHERAN CHURCH AND CEMETERY AT JOPPA, SET IN THE TOP OF
 JV0403'THE SOUTHWEST END OF THE SOUTHEAST CONCRETE GUARDRAIL ON THE
 JV0403'CONCRETE HIGHWAY BRIDGE OVER WINTERS RUN CREEK, 12 FEET SOUTHEAST
 JV0403'OF THE CENTER LINE OF THE HIGHWAY, 3.2 FEET NORTHEAST OF THE
 JV0403'SOUTHWEST END OF THE GUARDRAIL, AND ABOUT 3 1/2 FEET ABOVE THE
 JV0403'LEVEL OF THE HIGHWAY.
 JV0403
 JV0403                          STATION RECOVERY (1990)
 JV0403
 JV0403'RECOVERY NOTE BY US POWER SQUADRON 1990 (ELD)
 JV0403'MARK RECOVERED IN POOR CONDITION.
 JV0403
 JV0403                          STATION RECOVERY (2021)
 JV0403
 JV0403'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 JV0403'THE MARK IS GONE.  BRIDGE WAS REPLACED IN 1991.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2182 ***********************************************************************
 JV2182  DESIGNATION -  H 34
 JV2182  PID         -  JV2182
 JV2182  STATE/COUNTY-  MD/MONTGOMERY
 JV2182  COUNTRY     -  US
 JV2182  USGS QUAD   -  ROCKVILLE (2016)
 JV2182
 JV2182                         *CURRENT SURVEY CONTROL
 JV2182  ______________________________________________________________________
 JV2182* NAD 83(1986) POSITION- 39 06 33.     (N) 077 09 26.     (W)   SCALED
 JV2182* NAVD 88 ORTHO HEIGHT -   140.232 (meters)      460.08  (feet) ADJUSTED
 JV2182  ______________________________________________________________________
 JV2182  GEOID HEIGHT    -        -31.720 (meters)                     GEOID18
 JV2182  DYNAMIC HEIGHT  -        140.159 (meters)      459.84  (feet) COMP
 JV2182  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV2182
 JV2182  VERT ORDER      -  FIRST     CLASS II
 JV2182
 JV2182.The horizontal coordinates were scaled from a map and have
 JV2182.an estimated accuracy of +/- 6 seconds.
 JV2182
 JV2182.The orthometric height was determined by differential leveling and
 JV2182.adjusted by the NATIONAL GEODETIC SURVEY
 JV2182.in June 1991.
 JV2182
 JV2182.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2182.GEOID18 height accuracy estimate available here.
 JV2182
 JV2182.Click photographs - Photos may exist for this station.
 JV2182
 JV2182.The dynamic height is computed by dividing the NAVD 88
 JV2182.geopotential number by the normal gravity value computed on the
 JV2182.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2182.degrees latitude (g = 980.6199 gals.).
 JV2182
 JV2182.The modeled gravity was interpolated from observed gravity values.
 JV2182
 JV2182;                    North         East    Units  Estimated Accuracy
 JV2182;SPC MD       -   160,140.      386,400.      MT  (+/- 180 meters Scaled)
 JV2182
 JV2182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ134311(NAD 83)
 JV2182
 JV2182                          SUPERSEDED SURVEY CONTROL
 JV2182
 JV2182  NGVD 29 (11/26/84)  140.450  (m)          460.79   (f) ADJUSTED    1 2
 JV2182
 JV2182.Superseded values are not recommended for survey control.
 JV2182
 JV2182.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2182.See file dsdata.pdf to determine how the superseded data were derived.
 JV2182
 JV2182_MARKER: DB = BENCH MARK DISK
 JV2182_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2182_SP_SET: FOUNDATION
 JV2182_STAMPING: H 34 1938
 JV2182_MARK LOGO: CGS
 JV2182_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2182
 JV2182  HISTORY     - Date     Condition        Report By
 JV2182  HISTORY     - 1938     MONUMENTED       CGS
 JV2182  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV2182
 JV2182                          STATION DESCRIPTION
 JV2182
 JV2182'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2182'0.5 MI N FROM WESTMORE.
 JV2182'ON THE METROPOLITAN BRANCH OF THE B. AND O.R.R. 0.5 MILE NORTH
 JV2182'OF THE WESTMORE STATION.  SET IN THE SOUTHWEST CORNER OF CONCRETE
 JV2182'FOUNDATION OF SIGNAL TOWER W18-26, 5 FT NORTH OF ROAD LEADING TO
 JV2182'A. GUDE SONS NURSERY.  12 FT EAST OF THE CENTER LINE OF THE
 JV2182'NORTHBOUND TRACK.  1 FT ABOVE THE LEVEL OF THE RAILS.
 JV2182
 JV2182                          STATION RECOVERY (1987)
 JV2182
 JV2182'RECOVERY NOTE BY US POWER SQUADRON 1987 (DTH)
 JV2182'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2183 ***********************************************************************
 JV2183  DESIGNATION -  H 34 RESET 1942
 JV2183  PID         -  JV2183
 JV2183  STATE/COUNTY-  MD/MONTGOMERY
 JV2183  COUNTRY     -  US
 JV2183  USGS QUAD   -  ROCKVILLE (2016)
 JV2183
 JV2183                         *CURRENT SURVEY CONTROL
 JV2183  ______________________________________________________________________
 JV2183* NAD 83(1986) POSITION- 39 06 29.7    (N) 077 09 24.8    (W)   HD_HELD2
 JV2183* NAVD 88 ORTHO HEIGHT -   138.006 (meters)      452.77  (feet) ADJUSTED
 JV2183  ______________________________________________________________________
 JV2183  GEOID HEIGHT    -        -31.720 (meters)                     GEOID18
 JV2183  DYNAMIC HEIGHT  -        137.934 (meters)      452.54  (feet) COMP
 JV2183  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV2183
 JV2183  VERT ORDER      -  FIRST     CLASS II
 JV2183
 JV2183.The horizontal coordinates were established by autonomous hand held GPS
 JV2183.observations and have an estimated accuracy of +/- 10 meters.
 JV2183
 JV2183.The orthometric height was determined by differential leveling and
 JV2183.adjusted by the NATIONAL GEODETIC SURVEY
 JV2183.in June 1991.
 JV2183
 JV2183.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2183.GEOID18 height accuracy estimate available here.
 JV2183
 JV2183.Click photographs - Photos may exist for this station.
 JV2183
 JV2183.The dynamic height is computed by dividing the NAVD 88
 JV2183.geopotential number by the normal gravity value computed on the
 JV2183.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2183.degrees latitude (g = 980.6199 gals.).
 JV2183
 JV2183.The modeled gravity was interpolated from observed gravity values.
 JV2183
 JV2183;                    North         East    Units  Estimated Accuracy
 JV2183;SPC MD       -   160,035.      386,431.      MT  (+/- 10 meters HH2 GPS)
 JV2183
 JV2183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1350731004(NAD 83)
 JV2183
 JV2183                          SUPERSEDED SURVEY CONTROL
 JV2183
 JV2183  NGVD 29 (11/26/84)  138.224  (m)          453.49   (f) ADJUSTED    1 2
 JV2183
 JV2183.Superseded values are not recommended for survey control.
 JV2183
 JV2183.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2183.See file dsdata.pdf to determine how the superseded data were derived.
 JV2183
 JV2183_MARKER: DB = BENCH MARK DISK
 JV2183_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV2183_SP_SET: CULVERT
 JV2183_STAMPING: H 34 RESET 1942
 JV2183_MARK LOGO: CGS
 JV2183_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2183_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2183+SATELLITE: SATELLITE OBSERVATIONS - May 18, 2013
 JV2183
 JV2183  HISTORY     - Date     Condition        Report By
 JV2183  HISTORY     - 1942     MONUMENTED       CGS
 JV2183  HISTORY     - 1979     GOOD             NGS
 JV2183  HISTORY     - 20130518 GOOD             GEOCAC
 JV2183
 JV2183                          STATION DESCRIPTION
 JV2183
 JV2183'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2183'0.5 MI NW FROM WESTMORE.
 JV2183'0.5 MILE NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE
 JV2183'STAION AT WESTMORE, MONTGOMERY COUNTY, 150 FEET NORTH OF POLE
 JV2183'18+20, 300 FEET SOUTH OF THE CROSSING OF A MACADAM ROAD LEADING
 JV2183'TO THE A. GUDE SONS NURSERY, AT A CULVERT UNDER THE TRACK, IN
 JV2183'THE TOP OF THE SOUTH END OF THE EAST HEAD WALL, 18 FEET EAST OF
 JV2183'THE CENTER LINE OF THE NORTH-BOUND TRACK, AND ABOUT 7 FEET
 JV2183'LOWER THAN THE TRACK.  A STANDARD DISK, STAMPED H 34 RESET 1942.
 JV2183'NOTE-- THIS BENCH MARK WAS ESTABLISHED AND ITS ELEVATION
 JV2183'DETERMINED BY A PARTY FROM THIS BUREAU IN AUGUST 1942.
 JV2183
 JV2183                          STATION RECOVERY (1979)
 JV2183
 JV2183'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2183'RECOVERED IN GOOD CONDITION.
 JV2183
 JV2183                          STATION RECOVERY (2013)
 JV2183
 JV2183'RECOVERY NOTE BY GEOCACHING 2013 (RLM)
 JV2183'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3183 ***********************************************************************
 JV3183  DESIGNATION -  H 35
 JV3183  PID         -  JV3183
 JV3183  STATE/COUNTY-  MD/FREDERICK
 JV3183  COUNTRY     -  US
 JV3183  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3183
 JV3183                         *CURRENT SURVEY CONTROL
 JV3183  ______________________________________________________________________
 JV3183* NAD 83(1986) POSITION- 39 17 38.     (N) 077 33 27.     (W)   SCALED
 JV3183* NAVD 88 ORTHO HEIGHT -    73.352 (meters)      240.66  (feet) ADJUSTED
 JV3183  ______________________________________________________________________
 JV3183  GEOID HEIGHT    -        -32.804 (meters)                     GEOID18
 JV3183  DYNAMIC HEIGHT  -         73.312 (meters)      240.52  (feet) COMP
 JV3183  MODELED GRAVITY -    980,083.2   (mgal)                       NAVD 88
 JV3183
 JV3183  VERT ORDER      -  FIRST     CLASS II
 JV3183
 JV3183.The horizontal coordinates were scaled from a map and have
 JV3183.an estimated accuracy of +/- 6 seconds.
 JV3183
 JV3183.The orthometric height was determined by differential leveling and
 JV3183.adjusted by the NATIONAL GEODETIC SURVEY
 JV3183.in June 1991.
 JV3183
 JV3183.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3183.GEOID18 height accuracy estimate available here.
 JV3183
 JV3183.Click photographs - Photos may exist for this station.
 JV3183
 JV3183.The dynamic height is computed by dividing the NAVD 88
 JV3183.geopotential number by the normal gravity value computed on the
 JV3183.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3183.degrees latitude (g = 980.6199 gals.).
 JV3183
 JV3183.The modeled gravity was interpolated from observed gravity values.
 JV3183
 JV3183;                    North         East    Units  Estimated Accuracy
 JV3183;SPC MD       -   180,780.      351,910.      MT  (+/- 180 meters Scaled)
 JV3183
 JV3183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ794525(NAD 83)
 JV3183
 JV3183                          SUPERSEDED SURVEY CONTROL
 JV3183
 JV3183  NGVD 29 (11/26/84)   73.568  (m)          241.36   (f) ADJUSTED    1 2
 JV3183
 JV3183.Superseded values are not recommended for survey control.
 JV3183
 JV3183.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3183.See file dsdata.pdf to determine how the superseded data were derived.
 JV3183
 JV3183_MARKER: DB = BENCH MARK DISK
 JV3183_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3183_SP_SET: TUNNEL
 JV3183_STAMPING: H 35 1938
 JV3183_MARK LOGO: CGS
 JV3183_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3183
 JV3183  HISTORY     - Date     Condition        Report By
 JV3183  HISTORY     - 1938     MONUMENTED       CGS
 JV3183  HISTORY     - 1970     MARK NOT FOUND   USGS
 JV3183
 JV3183                          STATION DESCRIPTION
 JV3183
 JV3183'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV3183'1 MI SE FROM CATOCTIN.
 JV3183'1.0 MILE SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM
 JV3183'THE STATION AT CATOCTIN, FREDERICK COUNTY, AT THE EAST ENTRANCE
 JV3183'TO CATOCTIN TUNNEL, 9.7 FEET NORTHEAST OF THE CENTER LINE OF
 JV3183'THE WEST-BOUND TRACK, IN THE NORTH WALL OF THE TUNNEL, 1 FOOT
 JV3183'FROM THE ENTRANCE, AND 4 FEET ABOVE THE LEVEL OF THE RAILS.  A
 JV3183'STANDARD DISK, STAMPED H 35 1938 AND SET VERTICALLY.
 JV3183
 JV3183                          STATION RECOVERY (1970)
 JV3183
 JV3183'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1970
 JV3183'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1405 ***********************************************************************
 JV1405  DESIGNATION -  H 36
 JV1405  PID         -  JV1405
 JV1405  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1405  COUNTRY     -  US
 JV1405  USGS QUAD   -  ODENTON (2016)
 JV1405
 JV1405                         *CURRENT SURVEY CONTROL
 JV1405  ______________________________________________________________________
 JV1405* NAD 83(1986) POSITION- 39 04 04.     (N) 076 40 08.     (W)   SCALED
 JV1405* NAVD 88 ORTHO HEIGHT -    47.899 (meters)      157.15  (feet) ADJUSTED
 JV1405  ______________________________________________________________________
 JV1405  GEOID HEIGHT    -        -32.774 (meters)                     GEOID18
 JV1405  DYNAMIC HEIGHT  -         47.873 (meters)      157.06  (feet) COMP
 JV1405  MODELED GRAVITY -    980,081.0   (mgal)                       NAVD 88
 JV1405
 JV1405  VERT ORDER      -  FIRST     CLASS II
 JV1405
 JV1405.The horizontal coordinates were scaled from a map and have
 JV1405.an estimated accuracy of +/- 6 seconds.
 JV1405
 JV1405.The orthometric height was determined by differential leveling and
 JV1405.adjusted by the NATIONAL GEODETIC SURVEY
 JV1405.in June 1991.
 JV1405
 JV1405.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1405.GEOID18 height accuracy estimate available here.
 JV1405
 JV1405.Click photographs - Photos may exist for this station.
 JV1405
 JV1405.The dynamic height is computed by dividing the NAVD 88
 JV1405.geopotential number by the normal gravity value computed on the
 JV1405.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1405.degrees latitude (g = 980.6199 gals.).
 JV1405
 JV1405.The modeled gravity was interpolated from observed gravity values.
 JV1405
 JV1405;                    North         East    Units  Estimated Accuracy
 JV1405;SPC MD       -   155,580.      428,650.      MT  (+/- 180 meters Scaled)
 JV1405
 JV1405_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ556256(NAD 83)
 JV1405
 JV1405                          SUPERSEDED SURVEY CONTROL
 JV1405
 JV1405  NGVD 29 (11/26/84)   48.131  (m)          157.91   (f) ADJUSTED    1 2
 JV1405
 JV1405.Superseded values are not recommended for survey control.
 JV1405
 JV1405.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1405.See file dsdata.pdf to determine how the superseded data were derived.
 JV1405
 JV1405_MARKER: DB = BENCH MARK DISK
 JV1405_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1405_STAMPING: H 36 1938
 JV1405_MARK LOGO: CGS
 JV1405_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1405+STABILITY: SURFACE MOTION
 JV1405
 JV1405  HISTORY     - Date     Condition        Report By
 JV1405  HISTORY     - 1938     MONUMENTED       CGS
 JV1405
 JV1405                          STATION DESCRIPTION
 JV1405
 JV1405'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV1405'AT GAMBRILLS.
 JV1405'AT GAMBRILLS, ANNE ARUNDEL COUNTY, ON THE ODENTON ROAD, AT THE
 JV1405'ENTRANCE TO THE U.S. NAVAL ACADEMY DAIRY, 15 FEET EAST OF THE
 JV1405'JUNCTION OF A PAVED ROAD, 25 FEET NORTH OF THE CENTER LINE OF
 JV1405'THE ROAD, 10 FEET NORTH OF A POLE, AND ABOUT 2.5 FEET LOWER THAN
 JV1405'THE ROAD.  A STANDARD DISK, STAMPED H 36 1938 AND SET IN THE TOP
 JV1405'OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0731 ***********************************************************************
 HV0731  DESIGNATION -  H 37
 HV0731  PID         -  HV0731
 HV0731  STATE/COUNTY-  MD/CALVERT
 HV0731  COUNTRY     -  US
 HV0731  USGS QUAD   -  BROOMES ISLAND (2016)
 HV0731
 HV0731                         *CURRENT SURVEY CONTROL
 HV0731  ______________________________________________________________________
 HV0731* NAD 83(1986) POSITION- 38 27 12.     (N) 076 31 41.     (W)   SCALED
 HV0731* NAVD 88 ORTHO HEIGHT -    34.261 (meters)      112.40  (feet) ADJUSTED
 HV0731  ______________________________________________________________________
 HV0731  GEOID HEIGHT    -        -34.113 (meters)                     GEOID18
 HV0731  DYNAMIC HEIGHT  -         34.240 (meters)      112.34  (feet) COMP
 HV0731  MODELED GRAVITY -    980,015.3   (mgal)                       NAVD 88
 HV0731
 HV0731  VERT ORDER      -  FIRST     CLASS II
 HV0731
 HV0731.The horizontal coordinates were scaled from a map and have
 HV0731.an estimated accuracy of +/- 6 seconds.
 HV0731
 HV0731.The orthometric height was determined by differential leveling and
 HV0731.adjusted by the NATIONAL GEODETIC SURVEY
 HV0731.in June 1991.
 HV0731
 HV0731.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0731.GEOID18 height accuracy estimate available here.
 HV0731
 HV0731.Click photographs - Photos may exist for this station.
 HV0731
 HV0731.The dynamic height is computed by dividing the NAVD 88
 HV0731.geopotential number by the normal gravity value computed on the
 HV0731.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0731.degrees latitude (g = 980.6199 gals.).
 HV0731
 HV0731.The modeled gravity was interpolated from observed gravity values.
 HV0731
 HV0731;                    North         East    Units  Estimated Accuracy
 HV0731;SPC MD       -    87,430.      441,190.      MT  (+/- 180 meters Scaled)
 HV0731
 HV0731_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH666572(NAD 83)
 HV0731
 HV0731                          SUPERSEDED SURVEY CONTROL
 HV0731
 HV0731  NGVD 29 (11/26/84)   34.551  (m)          113.36   (f) ADJUSTED    1 2
 HV0731
 HV0731.Superseded values are not recommended for survey control.
 HV0731
 HV0731.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0731.See file dsdata.pdf to determine how the superseded data were derived.
 HV0731
 HV0731_MARKER: DB = BENCH MARK DISK
 HV0731_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0731_STAMPING: H 37 1941
 HV0731_MARK LOGO: CGS
 HV0731_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0731+STABILITY: SURFACE MOTION
 HV0731
 HV0731  HISTORY     - Date     Condition        Report By
 HV0731  HISTORY     - 1941     MONUMENTED       CGS
 HV0731
 HV0731                          STATION DESCRIPTION
 HV0731
 HV0731'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0731'3.6 MI SE FROM PRINCE FREDERICK.
 HV0731'3.6 MILES SOUTHEAST ALONG STATE HIGHWAY 2 FROM THE POST OFFICE
 HV0731'AT PRINCE FREDERICK, CALVERT COUNTY, THENCE 2.1 MILES SOUTH ALONG
 HV0731'THE ROAD LEADING TO BROOMES ISLAND, AND THENCE 1.6 MILES
 HV0731'SOUTHEAST ALONG THE ROAD LEADING TO WALLVILLE, ON THE OUTSIDE OF
 HV0731'A NORTHWEST-TO-SOUTH CURVE, 237 FEET NORTHWEST OF A 12-INCH
 HV0731'CULVERT, 37 FEET SOUTHEAST OF THE CENTER LINE OF A WAGON TRAIL
 HV0731'LEADING NORTHEAST THROUGH THE WOODS, 23.7 FEET NORTHEAST OF
 HV0731'THE CENTER LINE OF THE WALLVILLE ROAD, AND 0.5 FOOT SOUTHWEST
 HV0731'OF A WHITE WOODEN WITNESS POST.  A STANDARD DISK, STAMPED H 37
 HV0731'1941 AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1393 ***********************************************************************
 JV1393  DESIGNATION -  H 39
 JV1393  PID         -  JV1393
 JV1393  STATE/COUNTY-  MD/PRINCE GEORGES
 JV1393  COUNTRY     -  US
 JV1393  USGS QUAD   -  LAUREL (2016)
 JV1393
 JV1393                         *CURRENT SURVEY CONTROL
 JV1393  ______________________________________________________________________
 JV1393* NAD 83(1986) POSITION- 39 00 13.     (N) 076 47 12.     (W)   SCALED
 JV1393* NAVD 88 ORTHO HEIGHT -    44.749 (meters)      146.81  (feet) ADJUSTED
 JV1393  ______________________________________________________________________
 JV1393  GEOID HEIGHT    -        -32.515 (meters)                     GEOID18
 JV1393  DYNAMIC HEIGHT  -         44.725 (meters)      146.74  (feet) COMP
 JV1393  MODELED GRAVITY -    980,086.1   (mgal)                       NAVD 88
 JV1393
 JV1393  VERT ORDER      -  FIRST     CLASS II
 JV1393
 JV1393.The horizontal coordinates were scaled from a map and have
 JV1393.an estimated accuracy of +/- 6 seconds.
 JV1393
 JV1393.The orthometric height was determined by differential leveling and
 JV1393.adjusted by the NATIONAL GEODETIC SURVEY
 JV1393.in June 1991.
 JV1393
 JV1393.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1393.GEOID18 height accuracy estimate available here.
 JV1393
 JV1393.Click photographs - Photos may exist for this station.
 JV1393
 JV1393.The dynamic height is computed by dividing the NAVD 88
 JV1393.geopotential number by the normal gravity value computed on the
 JV1393.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1393.degrees latitude (g = 980.6199 gals.).
 JV1393
 JV1393.The modeled gravity was interpolated from observed gravity values.
 JV1393
 JV1393;                    North         East    Units  Estimated Accuracy
 JV1393;SPC MD       -   148,430.      418,480.      MT  (+/- 180 meters Scaled)
 JV1393
 JV1393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ452186(NAD 83)
 JV1393
 JV1393                          SUPERSEDED SURVEY CONTROL
 JV1393
 JV1393  NGVD 29 (11/26/84)   44.973  (m)          147.55   (f) ADJUSTED    1 2
 JV1393
 JV1393.Superseded values are not recommended for survey control.
 JV1393
 JV1393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1393.See file dsdata.pdf to determine how the superseded data were derived.
 JV1393
 JV1393_MARKER: DB = BENCH MARK DISK
 JV1393_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV1393_SP_SET: POLE BASE
 JV1393_STAMPING: H 39 1941
 JV1393_MARK LOGO: CGS
 JV1393_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1393+STABILITY: SURFACE MOTION
 JV1393
 JV1393  HISTORY     - Date     Condition        Report By
 JV1393  HISTORY     - 1941     MONUMENTED       CGS
 JV1393  HISTORY     - 1956     GOOD             CGS
 JV1393
 JV1393                          STATION DESCRIPTION
 JV1393
 JV1393'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1393'7.2 MI SW FROM ODENTON.
 JV1393'IN PRINCE GEORGES COUNTY, ABOUT 7.2 MILES SOUTHWEST ALONG THE
 JV1393'PENNSYLVANIA RAILROAD FROM THE STATION AT ODENTON, ANNE ARUNDEL
 JV1393'COUNTY, 13 FEET NORTHWEST OF MILEPOST 121, AT
 JV1393'POWER-TRANSMISSION LINE POLE 121-00, IN THE TOP OF THE WEST
 JV1393'CORNER OF THE CONCRETE BASE, AND 23.5 FEET NORTHWEST OF THE
 JV1393'NORTHWEST RAIL OF THE NORTHWEST TRACK.  A STANDARD DISK, STAMPED
 JV1393'H 39 1941.
 JV1393
 JV1393                          STATION RECOVERY (1956)
 JV1393
 JV1393'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956
 JV1393'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0967 ***********************************************************************
 HV0967  DESIGNATION -  H 40
 HV0967  PID         -  HV0967
 HV0967  STATE/COUNTY-  MD/CHARLES
 HV0967  COUNTRY     -  US
 HV0967  USGS QUAD   -  HUGHESVILLE (2016)
 HV0967
 HV0967                         *CURRENT SURVEY CONTROL
 HV0967  ______________________________________________________________________
 HV0967* NAD 83(1986) POSITION- 38 33 01.     (N) 076 48 57.     (W)   SCALED
 HV0967* NAVD 88 ORTHO HEIGHT -    54.419 (meters)      178.54  (feet) POSTED
 HV0967  ______________________________________________________________________
 HV0967  GEOID HEIGHT    -        -33.365 (meters)                     GEOID18
 HV0967  DYNAMIC HEIGHT  -         54.39  (meters)      178.4   (feet) COMP
 HV0967  MODELED GRAVITY -    980,020.8   (mgal)                       NAVD 88
 HV0967
 HV0967  VERT ORDER      -  * POSTED, SEE BELOW
 HV0967
 HV0967.The horizontal coordinates were scaled from a map and have
 HV0967.an estimated accuracy of +/- 6 seconds.
 HV0967
 HV0967.The orthometric height was determined by differential leveling
 HV0967.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0967
 HV0967.* This is a POSTED BENCH MARK height.
 HV0967
 HV0967.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0967.GEOID18 height accuracy estimate available here.
 HV0967
 HV0967.Click photographs - Photos may exist for this station.
 HV0967
 HV0967.The dynamic height is computed by dividing the NAVD 88
 HV0967.geopotential number by the normal gravity value computed on the
 HV0967.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0967.degrees latitude (g = 980.6199 gals.).
 HV0967
 HV0967.The modeled gravity was interpolated from observed gravity values.
 HV0967
 HV0967;                    North         East    Units  Estimated Accuracy
 HV0967;SPC MD       -    98,100.      416,050.      MT  (+/- 180 meters Scaled)
 HV0967
 HV0967_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH417684(NAD 83)
 HV0967
 HV0967                          SUPERSEDED SURVEY CONTROL
 HV0967
 HV0967  NGVD 29 (11/26/84)   54.674  (m)          179.38   (f) ADJUSTED    1 2
 HV0967
 HV0967.Superseded values are not recommended for survey control.
 HV0967
 HV0967.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0967.See file dsdata.pdf to determine how the superseded data were derived.
 HV0967
 HV0967_MARKER: DB = BENCH MARK DISK
 HV0967_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0967_SP_SET: CULVERT
 HV0967_STAMPING: H 40 1941
 HV0967_MARK LOGO: CGS
 HV0967_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0967
 HV0967  HISTORY     - Date     Condition        Report By
 HV0967  HISTORY     - 1941     MONUMENTED       CGS
 HV0967
 HV0967                          STATION DESCRIPTION
 HV0967
 HV0967'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0967'8 MI SE FROM WALDORF.
 HV0967'ABOUT 8 MILES SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE
 HV0967'PENNSYLVANIA RAILROAD STATION AT WALDORF, CHARLES COUNTY, IN THE
 HV0967'SOUTHEAST QUARTER OF A CROSSROADS, 83.6 FEET NORTH OF THE
 HV0967'NORTHEAST CORNER OF A FARMHOUSE, 28.5 FEET NORTHWEST OF
 HV0967'POWER-TRANSMISSION LINE POLE 416, AT A 12-INCH CONCRETE CULVERT,
 HV0967'IN THE TOP OF THE SOUTH CORNER OF THE EAST HEAD WALL, 28.1 FEET
 HV0967'SOUTH OF THE CENTER LINE OF THE HIGHWAY, AND 9 FEET EAST OF THE
 HV0967'CENTER LINE OF THE ROAD.  A STANDARD DISK, STAMPED H 40 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0968 ***********************************************************************
 HV0968  DESIGNATION -  H 40 RESET
 HV0968  PID         -  HV0968
 HV0968  STATE/COUNTY-  MD/CHARLES
 HV0968  COUNTRY     -  US
 HV0968  USGS QUAD   -  HUGHESVILLE (2016)
 HV0968
 HV0968                         *CURRENT SURVEY CONTROL
 HV0968  ______________________________________________________________________
 HV0968* NAD 83(1986) POSITION- 38 33 01.     (N) 076 48 57.     (W)   SCALED
 HV0968* NAVD 88 ORTHO HEIGHT -    54.36  (+/-2cm)      178.3   (feet) VERTCON3
 HV0968  ______________________________________________________________________
 HV0968  GEOID HEIGHT    -        -33.365 (meters)                     GEOID18
 HV0968  VERT ORDER      -  THIRD (See Below)
 HV0968
 HV0968.The horizontal coordinates were scaled from a map and have
 HV0968.an estimated accuracy of +/- 6 seconds.
 HV0968
 HV0968.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0968.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0968
 HV0968.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0968.GEOID18 height accuracy estimate available here.
 HV0968
 HV0968.The vertical order pertains to the NGVD 29 superseded value.
 HV0968
 HV0968.Click photographs - Photos may exist for this station.
 HV0968
 HV0968;                    North         East    Units  Estimated Accuracy
 HV0968;SPC MD       -    98,100.      416,050.      MT  (+/- 180 meters Scaled)
 HV0968
 HV0968_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH417684(NAD 83)
 HV0968
 HV0968                          SUPERSEDED SURVEY CONTROL
 HV0968
 HV0968  NGVD 29 (??/??/??)   54.62   (m)          179.2    (f) RESET       3  
 HV0968
 HV0968.Superseded values are not recommended for survey control.
 HV0968
 HV0968.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0968.See file dsdata.pdf to determine how the superseded data were derived.
 HV0968
 HV0968_MARKER: DB = BENCH MARK DISK
 HV0968_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0968_STAMPING: H 40 RESET 1966 1941
 HV0968_MARK LOGO: CGS
 HV0968_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0968+STABILITY: SURFACE MOTION
 HV0968
 HV0968  HISTORY     - Date     Condition        Report By
 HV0968  HISTORY     - 1966     MONUMENTED       MDSRC
 HV0968
 HV0968                          STATION DESCRIPTION
 HV0968
 HV0968'DESCRIBED BY MD STATE ROADS COMM 1966
 HV0968'8 MI SE FROM WALDORF.
 HV0968'ABOUT 8 MILES SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE
 HV0968'PENNSYLVANIA RAILROAD CROSSING AT WALDORF, 75.3 FEET NORTHEAST OF
 HV0968'THE NORTHEAST CRNER OF A TWO STORY FRAME HOUSE, 49.8 FEET SOUTH
 HV0968'OF THE SOUTHBOUND LANE OF HIGHWAY 5, 24 FEET EAST OF THE CENTER
 HV0968'LINE OF A GRAVEL ENTRANCE, 3.7 FEET SOUTH OF POWER POLE NO. 416
 HV0968'AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0550 ***********************************************************************
 HV0550  DESIGNATION -  H 41
 HV0550  PID         -  HV0550
 HV0550  STATE/COUNTY-  MD/ST MARYS
 HV0550  COUNTRY     -  US
 HV0550  USGS QUAD   -  HOLLYWOOD (2016)
 HV0550
 HV0550                         *CURRENT SURVEY CONTROL
 HV0550  ______________________________________________________________________
 HV0550* NAD 83(1986) POSITION- 38 17 08.     (N) 076 37 11.     (W)   SCALED
 HV0550* NAVD 88 ORTHO HEIGHT -     3.066 (meters)       10.06  (feet) POSTED
 HV0550  ______________________________________________________________________
 HV0550  GEOID HEIGHT    -        -33.939 (meters)                     GEOID18
 HV0550  DYNAMIC HEIGHT  -          3.06  (meters)       10.0   (feet) COMP
 HV0550  MODELED GRAVITY -    980,029.1   (mgal)                       NAVD 88
 HV0550
 HV0550  VERT ORDER      -  * POSTED, SEE BELOW
 HV0550
 HV0550.The horizontal coordinates were scaled from a map and have
 HV0550.an estimated accuracy of +/- 6 seconds.
 HV0550
 HV0550.The orthometric height was determined by differential leveling
 HV0550.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV0550
 HV0550.* This is a POSTED BENCH MARK height.
 HV0550
 HV0550.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0550.GEOID18 height accuracy estimate available here.
 HV0550
 HV0550.Click photographs - Photos may exist for this station.
 HV0550
 HV0550.The dynamic height is computed by dividing the NAVD 88
 HV0550.geopotential number by the normal gravity value computed on the
 HV0550.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0550.degrees latitude (g = 980.6199 gals.).
 HV0550
 HV0550.The modeled gravity was interpolated from observed gravity values.
 HV0550
 HV0550;                    North         East    Units  Estimated Accuracy
 HV0550;SPC MD       -    68,770.      433,270.      MT  (+/- 180 meters Scaled)
 HV0550
 HV0550_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH583387(NAD 83)
 HV0550
 HV0550                          SUPERSEDED SURVEY CONTROL
 HV0550
 HV0550  NGVD 29 (11/26/84)    3.397  (m)           11.15   (f) ADJUSTED    1 2
 HV0550
 HV0550.Superseded values are not recommended for survey control.
 HV0550
 HV0550.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0550.See file dsdata.pdf to determine how the superseded data were derived.
 HV0550
 HV0550_MARKER: DB = BENCH MARK DISK
 HV0550_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0550_SP_SET: CULVERT
 HV0550_STAMPING: H 41 1941
 HV0550_MARK LOGO: CGS
 HV0550_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0550
 HV0550  HISTORY     - Date     Condition        Report By
 HV0550  HISTORY     - 1941     MONUMENTED       CGS
 HV0550
 HV0550                          STATION DESCRIPTION
 HV0550
 HV0550'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 HV0550'0.9 MI SE FROM LEONARDTOWN.
 HV0550'0.9 MILE SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE POST OFFICE
 HV0550'AT LEONARDTOWN, AT THE JUNCTION OF NO. 5 AND ST. ANDREWS CHURCH
 HV0550'ROAD, SET IN THE EAST CORNER OF THE NORTH HEAD-WALL OF 18-INCH
 HV0550'CONCRETE CULVER UNDER THE ST. ANDREWS ROAD, 25.4 FEET NORTHEAST
 HV0550'OF CENTER-LINE OF HIGHWAY, 25 FEET NORTH OF CENTER-LINE OF ST.
 HV0550'ANDREWS ROAD, 15.3 FEET SOUTHEAST OF OLD ST. ANDREWS CHURCH
 HV0550'HISTORICAL MARKER POST.  A STANDARD DISK STAMPED H-41 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0551 ***********************************************************************
 HV0551  DESIGNATION -  H 41 RESET
 HV0551  PID         -  HV0551
 HV0551  STATE/COUNTY-  MD/ST MARYS
 HV0551  COUNTRY     -  US
 HV0551  USGS QUAD   -  HOLLYWOOD (2016)
 HV0551
 HV0551                         *CURRENT SURVEY CONTROL
 HV0551  ______________________________________________________________________
 HV0551* NAD 83(1986) POSITION- 38 17 08.     (N) 076 37 11.     (W)   SCALED
 HV0551* NAVD 88 ORTHO HEIGHT -     2.82  (+/-2cm)        9.3   (feet) VERTCON3
 HV0551  ______________________________________________________________________
 HV0551  GEOID HEIGHT    -        -33.939 (meters)                     GEOID18
 HV0551  VERT ORDER      -  THIRD (See Below)
 HV0551
 HV0551.The horizontal coordinates were scaled from a map and have
 HV0551.an estimated accuracy of +/- 6 seconds.
 HV0551
 HV0551.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV0551.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV0551
 HV0551.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0551.GEOID18 height accuracy estimate available here.
 HV0551
 HV0551.The vertical order pertains to the NGVD 29 superseded value.
 HV0551
 HV0551.Click photographs - Photos may exist for this station.
 HV0551
 HV0551;                    North         East    Units  Estimated Accuracy
 HV0551;SPC MD       -    68,770.      433,270.      MT  (+/- 180 meters Scaled)
 HV0551
 HV0551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH583387(NAD 83)
 HV0551
 HV0551                          SUPERSEDED SURVEY CONTROL
 HV0551
 HV0551  NGVD 29 (??/??/??)    3.20   (m)           10.5    (f) RESET       3  
 HV0551
 HV0551.Superseded values are not recommended for survey control.
 HV0551
 HV0551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0551.See file dsdata.pdf to determine how the superseded data were derived.
 HV0551
 HV0551_MARKER: DB = BENCH MARK DISK
 HV0551_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0551_STAMPING: H 41 RESET 1954
 HV0551_MARK LOGO: CGS
 HV0551_PROJECTION: FLUSH
 HV0551_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0551+STABILITY: SURFACE MOTION
 HV0551
 HV0551  HISTORY     - Date     Condition        Report By
 HV0551  HISTORY     - 1954     MONUMENTED       MDBCSM
 HV0551  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0551
 HV0551                          STATION DESCRIPTION
 HV0551
 HV0551'DESCRIBED BY MD BUR SURV AND MAPS 1954
 HV0551'0.9 MI SE FROM LEONARDTOWN.
 HV0551'0.9 MILE SOUTHEAST ALONG STATE HIGHWAY 5 FROM THE POST OFFICE
 HV0551'AT LEONARDTOWN, ST. MARYS COUNTY, AT THE JUNCTION OF ST. ANDREWS
 HV0551'CHURCH ROAD (STATE HIGHWAY 471), 145 FEET EAST OF STATE HIGHWAY 5,
 HV0551'38.5 FEET SOUTH OF STATE HIGHWAY 471, 32 FEET EAST OF THE
 HV0551'SOUTHEAST CORNER OF THE BLUE SWAN RESTAURANT, AND 4.5 FEET
 HV0551'WEST OF POLE 23 B.  SET IN THE TOP OF A CONCRETE POST.
 HV0551
 HV0551                          STATION RECOVERY (1971)
 HV0551
 HV0551'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0551'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3221 ***********************************************************************
 JV3221  DESIGNATION -  H 42
 JV3221  PID         -  JV3221
 JV3221  STATE/COUNTY-  MD/WASHINGTON
 JV3221  COUNTRY     -  US
 JV3221  USGS QUAD   -  CLEAR SPRING (2016)
 JV3221
 JV3221                         *CURRENT SURVEY CONTROL
 JV3221  ______________________________________________________________________
 JV3221* NAD 83(1986) POSITION- 39 37 53.3    (N) 077 54 35.5    (W)   HD_HELD2
 JV3221* NAVD 88 ORTHO HEIGHT -   140.221 (meters)      460.04  (feet) ADJUSTED
 JV3221  ______________________________________________________________________
 JV3221  GEOID HEIGHT    -        -34.304 (meters)                     GEOID18
 JV3221  DYNAMIC HEIGHT  -        140.138 (meters)      459.77  (feet) COMP
 JV3221  MODELED GRAVITY -    980,039.2   (mgal)                       NAVD 88
 JV3221
 JV3221  VERT ORDER      -  FIRST     CLASS II
 JV3221
 JV3221.The horizontal coordinates were established by autonomous hand held GPS
 JV3221.observations and have an estimated accuracy of +/- 10 meters.
 JV3221
 JV3221.The orthometric height was determined by differential leveling and
 JV3221.adjusted by the NATIONAL GEODETIC SURVEY
 JV3221.in June 1991.
 JV3221
 JV3221.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3221.GEOID18 height accuracy estimate available here.
 JV3221
 JV3221.Click photographs - Photos may exist for this station.
 JV3221
 JV3221.The dynamic height is computed by dividing the NAVD 88
 JV3221.geopotential number by the normal gravity value computed on the
 JV3221.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3221.degrees latitude (g = 980.6199 gals.).
 JV3221
 JV3221.The modeled gravity was interpolated from observed gravity values.
 JV3221
 JV3221;                    North         East    Units  Estimated Accuracy
 JV3221;SPC MD       -   218,501.      321,886.      MT  (+/- 10 meters HH2 GPS)
 JV3221
 JV3221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5026490902(NAD 83)
 JV3221
 JV3221                          SUPERSEDED SURVEY CONTROL
 JV3221
 JV3221  NGVD 29 (11/26/84)  140.422  (m)          460.70   (f) ADJUSTED    1 2
 JV3221
 JV3221.Superseded values are not recommended for survey control.
 JV3221
 JV3221.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3221.See file dsdata.pdf to determine how the superseded data were derived.
 JV3221
 JV3221_MARKER: DB = BENCH MARK DISK
 JV3221_SETTING: 80 = SET IN A BOULDER
 JV3221_STAMPING: H 42 1941
 JV3221_MARK LOGO: CGS
 JV3221_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3221+STABILITY: SURFACE MOTION
 JV3221_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3221+SATELLITE: SATELLITE OBSERVATIONS - October 01, 2015
 JV3221
 JV3221  HISTORY     - Date     Condition        Report By
 JV3221  HISTORY     - 1941     MONUMENTED       CGS
 JV3221  HISTORY     - 1942     GOOD             CGS
 JV3221  HISTORY     - 19901025 GOOD             NGS
 JV3221  HISTORY     - 20151001 GOOD             GEOCAC
 JV3221
 JV3221                          STATION DESCRIPTION
 JV3221
 JV3221'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV3221'11.2 MI SW FROM HAGERSTOWN.
 JV3221'11.2 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JV3221'THE STATION AT HAGERSTOWN, 28 FEET WEST OF MILE-POST NO. 98, 13
 JV3221'FEET SOUTH OF THE SOUTH RAIL OF THE WEST-BOUND TRACK, 48.5 FEET
 JV3221'NORTHWEST OF THE 16TH TELEGRAPH POLE EAST OF A CROSSING, 26 FEET
 JV3221'NORTH OF THE RIGHT-OF-WAY FENCE, SET IN A ROCK BOULDER ABOUT LEVEL
 JV3221'WITH THE TRACKS.
 JV3221
 JV3221                          STATION RECOVERY (1942)
 JV3221
 JV3221'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV3221'RECOVERED IN GOOD CONDITION.
 JV3221
 JV3221                          STATION RECOVERY (1990)
 JV3221
 JV3221'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV3221'RECOVERED IN GOOD CONDITION.
 JV3221
 JV3221                          STATION RECOVERY (2015)
 JV3221
 JV3221'RECOVERY NOTE BY GEOCACHING 2015 (DPB)
 JV3221'FOUND IN GOOD CONDITION UNDER SOME SILT AND LEAVES.  EAST ALONG THE
 JV3221'TRACKS 0.3 MI. FROM THE ASHTON RD. CROSSING.  NO UTILITY POLES ARE IN
 JV3221'EVIDENCE.  USE THE DISTANCE WEST FROM THE 98 MILE POST AND SOUTH FROM
 JV3221'THE RAIL AS DESCRIBED.  MARK IS ALONG THE GRAVEL/BRUSH INTERFACE AT
 JV3221'THE BASE OF THE EMBANKMENT ABOUT 1.5 FT. BELOW THE TRACK LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0026 ***********************************************************************
 JW0026  DESIGNATION -  H 43
 JW0026  PID         -  JW0026
 JW0026  STATE/COUNTY-  MD/WASHINGTON
 JW0026  COUNTRY     -  US
 JW0026  USGS QUAD   -  GREAT CACAPON (2016)
 JW0026
 JW0026                         *CURRENT SURVEY CONTROL
 JW0026  ______________________________________________________________________
 JW0026* NAD 83(1986) POSITION- 39 37 16.     (N) 078 16 12.     (W)   SCALED
 JW0026* NAVD 88 ORTHO HEIGHT -   136.639 (meters)      448.29  (feet) ADJUSTED
 JW0026  ______________________________________________________________________
 JW0026  GEOID HEIGHT    -        -33.876 (meters)                     GEOID18
 JW0026  DYNAMIC HEIGHT  -        136.559 (meters)      448.03  (feet) COMP
 JW0026  MODELED GRAVITY -    980,040.3   (mgal)                       NAVD 88
 JW0026
 JW0026  VERT ORDER      -  FIRST     CLASS II
 JW0026
 JW0026.The horizontal coordinates were scaled from a map and have
 JW0026.an estimated accuracy of +/- 6 seconds.
 JW0026
 JW0026.The orthometric height was determined by differential leveling and
 JW0026.adjusted by the NATIONAL GEODETIC SURVEY
 JW0026.in June 1991.
 JW0026
 JW0026.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0026.GEOID18 height accuracy estimate available here.
 JW0026
 JW0026.Click photographs - Photos may exist for this station.
 JW0026
 JW0026.The dynamic height is computed by dividing the NAVD 88
 JW0026.geopotential number by the normal gravity value computed on the
 JW0026.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0026.degrees latitude (g = 980.6199 gals.).
 JW0026
 JW0026.The modeled gravity was interpolated from observed gravity values.
 JW0026
 JW0026;                    North         East    Units  Estimated Accuracy
 JW0026;SPC MD       -   217,720.      290,950.      MT  (+/- 180 meters Scaled)
 JW0026
 JW0026_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD343892(NAD 83)
 JW0026
 JW0026                          SUPERSEDED SURVEY CONTROL
 JW0026
 JW0026  NGVD 29 (??/??/92)  136.844  (m)          448.96   (f) ADJ UNCH    1 2
 JW0026
 JW0026.Superseded values are not recommended for survey control.
 JW0026
 JW0026.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0026.See file dsdata.pdf to determine how the superseded data were derived.
 JW0026
 JW0026_MARKER: DB = BENCH MARK DISK
 JW0026_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JW0026_SP_SET: SIGNAL TOWER
 JW0026_STAMPING: H 43 1941
 JW0026_MARK LOGO: CGS
 JW0026_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JW0026
 JW0026  HISTORY     - Date     Condition        Report By
 JW0026  HISTORY     - 1941     MONUMENTED       CGS
 JW0026
 JW0026                          STATION DESCRIPTION
 JW0026
 JW0026'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0026'8.7 MI SW FROM HANCOCK.
 JW0026'8.7 MILES SOUTHWEST ALONG THE WESTERN MARYLAND RAILROAD FROM
 JW0026'THE STATION AT HANCOCK, 13 RAILS EAST OF MILE-POST NO. 124, SET
 JW0026'IN THE NORTHWEST CORNER OF SIGNAL TOWER NO. A-1239, 8 FEET SOUTH
 JW0026'OF THE SOUTH RAIL OF THE TRACK, 25 FEET SOUTH OF THE SOUTH EDGE
 JW0026'OF A HIGH BLUFF.  A STANDARD DISK STAMPED H-43 1941.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0735 ***********************************************************************
 JV0735  DESIGNATION -  H 44
 JV0735  PID         -  JV0735
 JV0735  STATE/COUNTY-  MD/HOWARD
 JV0735  COUNTRY     -  US
 JV0735  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0735
 JV0735                         *CURRENT SURVEY CONTROL
 JV0735  ______________________________________________________________________
 JV0735* NAD 83(1986) POSITION- 39 19 12.     (N) 076 51 22.     (W)   SCALED
 JV0735* NAVD 88 ORTHO HEIGHT -    78.647 (meters)      258.03  (feet) ADJUSTED
 JV0735  ______________________________________________________________________
 JV0735  GEOID HEIGHT    -        -32.109 (meters)                     GEOID18
 JV0735  DYNAMIC HEIGHT  -         78.606 (meters)      257.89  (feet) COMP
 JV0735  MODELED GRAVITY -    980,098.7   (mgal)                       NAVD 88
 JV0735
 JV0735  VERT ORDER      -  FIRST     CLASS II
 JV0735
 JV0735.The horizontal coordinates were scaled from a map and have
 JV0735.an estimated accuracy of +/- 6 seconds.
 JV0735
 JV0735.The orthometric height was determined by differential leveling and
 JV0735.adjusted by the NATIONAL GEODETIC SURVEY
 JV0735.in June 1991.
 JV0735
 JV0735.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0735.GEOID18 height accuracy estimate available here.
 JV0735
 JV0735.Click photographs - Photos may exist for this station.
 JV0735
 JV0735.The dynamic height is computed by dividing the NAVD 88
 JV0735.geopotential number by the normal gravity value computed on the
 JV0735.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0735.degrees latitude (g = 980.6199 gals.).
 JV0735
 JV0735.The modeled gravity was interpolated from observed gravity values.
 JV0735
 JV0735;                    North         East    Units  Estimated Accuracy
 JV0735;SPC MD       -   183,540.      412,410.      MT  (+/- 180 meters Scaled)
 JV0735
 JV0735_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ399539(NAD 83)
 JV0735
 JV0735                          SUPERSEDED SURVEY CONTROL
 JV0735
 JV0735  NGVD 29 (11/26/84)   78.863  (m)          258.74   (f) ADJUSTED    1 2
 JV0735
 JV0735.Superseded values are not recommended for survey control.
 JV0735
 JV0735.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0735.See file dsdata.pdf to determine how the superseded data were derived.
 JV0735
 JV0735_MARKER: DB = BENCH MARK DISK
 JV0735_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0735_SP_SET: BRIDGE COPING
 JV0735_STAMPING: H 44 1941
 JV0735_MARK LOGO: CGS
 JV0735_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0735
 JV0735  HISTORY     - Date     Condition        Report By
 JV0735  HISTORY     - 1941     MONUMENTED       CGS
 JV0735  HISTORY     - 1942     GOOD             CGS
 JV0735
 JV0735                          STATION DESCRIPTION
 JV0735
 JV0735'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV0735'7.9 MI NW FROM ELLICOTT CITY.
 JV0735'ABOUT 7.9 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0735'FROM ELLICOTT CITY, HOWARD COUNTY, AT MILEPOST 22, ABOUT 10 RAILS
 JV0735'EAST OF A PIPE-LINE CROSSING AT THE ABANDONED STATION AT DAVIS,
 JV0735'AT BRIDGE 23 B, IN THE TOP OF THE SOUTH COPING, AND 1.2 FEET EAST
 JV0735'OF THE WEST END .  A STANDARD DISK, STAMPED H 44 1941.
 JV0735
 JV0735                          STATION RECOVERY (1942)
 JV0735
 JV0735'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV0735'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0765 ***********************************************************************
 JV0765  DESIGNATION -  H 45 RESET
 JV0765  PID         -  JV0765
 JV0765  STATE/COUNTY-  MD/CARROLL
 JV0765  COUNTRY     -  US
 JV0765  USGS QUAD   -  FINKSBURG (2016)
 JV0765
 JV0765                         *CURRENT SURVEY CONTROL
 JV0765  ______________________________________________________________________
 JV0765* NAD 83(1986) POSITION- 39 28 25.     (N) 076 55 06.     (W)   SCALED
 JV0765* NAVD 88 ORTHO HEIGHT -   161.26  (meters)      529.1   (feet) RESET
 JV0765  ______________________________________________________________________
 JV0765  GEOID HEIGHT    -        -32.033 (meters)                     GEOID18
 JV0765  VERT ORDER      -  THIRD
 JV0765
 JV0765.The horizontal coordinates were scaled from a map and have
 JV0765.an estimated accuracy of +/- 6 seconds.
 JV0765
 JV0765.The orthometric height was computed from unverified reset data.
 JV0765
 JV0765.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0765.GEOID18 height accuracy estimate available here.
 JV0765
 JV0765.Click photographs - Photos may exist for this station.
 JV0765
 JV0765;                    North         East    Units  Estimated Accuracy
 JV0765;SPC MD       -   200,590.      407,030.      MT  (+/- 180 meters Scaled)
 JV0765
 JV0765_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ349710(NAD 83)
 JV0765
 JV0765                          SUPERSEDED SURVEY CONTROL
 JV0765
 JV0765  NGVD 29 (??/??/??)  161.46   (m)          529.7    (f) RESET       3  
 JV0765
 JV0765.Superseded values are not recommended for survey control.
 JV0765
 JV0765.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0765.See file dsdata.pdf to determine how the superseded data were derived.
 JV0765
 JV0765_MARKER: DB = BENCH MARK DISK
 JV0765_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0765_STAMPING: H 45 RESET 1963
 JV0765_MARK LOGO: CGS
 JV0765_PROJECTION: PROJECTING
 JV0765_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0765+STABILITY: SURFACE MOTION
 JV0765
 JV0765  HISTORY     - Date     Condition        Report By
 JV0765  HISTORY     - 1963     MONUMENTED       MDSRC
 JV0765
 JV0765                          STATION DESCRIPTION
 JV0765
 JV0765'DESCRIBED BY MD STATE ROADS COMM 1963
 JV0765'1.1 MI NE FROM GAMBER.
 JV0765'LOCATED 1.1 MILE NORTHEAST OF GAMBER, MD. (JUNCTION OF MD. ROUTES
 JV0765'32 AND 91), ALONG MD. 91, 400 FEET NORTHEAST OF A CONCRETE BOX
 JV0765'CULVERT, 9.5 FEET NORTHEAST OF G. AND E. POLE 67315, 23 FEET
 JV0765'WEST OF A 10-INCH OAK TREE, AND SET IN THE TOP OF A CONCRETE
 JV0765'POST PROJECTING 5 INCHES ABOVE THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0384 ***********************************************************************
 HV0384  DESIGNATION -  H 47
 HV0384  PID         -  HV0384
 HV0384  STATE/COUNTY-  MD/ST MARYS
 HV0384  COUNTRY     -  US
 HV0384  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV0384
 HV0384                         *CURRENT SURVEY CONTROL
 HV0384  ______________________________________________________________________
 HV0384* NAD 83(1986) POSITION- 38 06 50.     (N) 076 28 39.     (W)   SCALED
 HV0384* NAVD 88 ORTHO HEIGHT -     0.961 (meters)        3.15  (feet) ADJUSTED
 HV0384  ______________________________________________________________________
 HV0384  GEOID HEIGHT    -        -34.718 (meters)                     GEOID18
 HV0384  DYNAMIC HEIGHT  -          0.960 (meters)        3.15  (feet) COMP
 HV0384  MODELED GRAVITY -    979,991.2   (mgal)                       NAVD 88
 HV0384
 HV0384  VERT ORDER      -  FIRST     CLASS II
 HV0384
 HV0384.The horizontal coordinates were scaled from a map and have
 HV0384.an estimated accuracy of +/- 6 seconds.
 HV0384
 HV0384.The orthometric height was determined by differential leveling and
 HV0384.adjusted by the NATIONAL GEODETIC SURVEY
 HV0384.in June 1991.
 HV0384
 HV0384.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0384.GEOID18 height accuracy estimate available here.
 HV0384
 HV0384.Click photographs - Photos may exist for this station.
 HV0384
 HV0384.The dynamic height is computed by dividing the NAVD 88
 HV0384.geopotential number by the normal gravity value computed on the
 HV0384.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0384.degrees latitude (g = 980.6199 gals.).
 HV0384
 HV0384.The modeled gravity was interpolated from observed gravity values.
 HV0384
 HV0384;                    North         East    Units  Estimated Accuracy
 HV0384;SPC MD       -    49,780.      445,820.      MT  (+/- 180 meters Scaled)
 HV0384
 HV0384_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH704194(NAD 83)
 HV0384
 HV0384                          SUPERSEDED SURVEY CONTROL
 HV0384
 HV0384  NGVD 29 (11/26/84)    1.253  (m)            4.11   (f) ADJUSTED    1 2
 HV0384
 HV0384.Superseded values are not recommended for survey control.
 HV0384
 HV0384.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0384.See file dsdata.pdf to determine how the superseded data were derived.
 HV0384
 HV0384_MARKER: DB = BENCH MARK DISK
 HV0384_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0384_STAMPING: H 47 1942
 HV0384_MARK LOGO: CGS
 HV0384_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0384+STABILITY: SURFACE MOTION
 HV0384
 HV0384  HISTORY     - Date     Condition        Report By
 HV0384  HISTORY     - 1942     MONUMENTED       CGS
 HV0384  HISTORY     - 1965     GOOD             CGS
 HV0384
 HV0384                          STATION DESCRIPTION
 HV0384
 HV0384'DESCRIBED BY COAST AND GEODETIC SURVEY 1965
 HV0384'AT ST GEORGES ISLAND.
 HV0384'THIS MARK IS ALONG HIGHWAY NUMBER 249, 0.35 MILE NORTHWEST OF
 HV0384'THE POST OFFICE AT ST. GEORGE ISLAND, ON ST. GEORGE ISLAND, NEAR
 HV0384'TWO HOUSES ON OPPOSITE SIDES OF THE ROAD EACH HAVING WHITE
 HV0384'PICKET FENCES AROUND THE YARD, ABOUT 90 FEET SOUTHWEST AND
 HV0384'ACROSS THE ROAD FROM POWER POLE NUMBER 14 B 26, 34 FEET
 HV0384'NORTHWEST OF THE NORTHWEST END OF A 14-INCH CORRUGATED IRON
 HV0384'CULVERT, 22 FEET WEST OF THE CENTER LINE OF THE ROAD, JUST SOUTH
 HV0384'OF A WIRE FENCE, NEAR A 10-INCH CEDAR TREE, AND IS A STANDARD
 HV0384'DISK SET IN THE TOP OF A CONCRETE POST, ABOUT 3 FEET EAST OF A
 HV0384'WHITE WOODEN POST PAINTED WITH THE LETTERS USBM.  NOTE-- THE
 HV0384'POST OFFICE HAS BEEN MOVED AND MARK IS NOW 0.3 MILE SOUTH OF
 HV0384'ST. FRANCIS XAVIER CHURCH.  THE WHITE PICKET FENCES ARE GONE AND
 HV0384'MARK IS NOW 3 FEET EAST OF UTILITY POLE 282.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0402 ***********************************************************************
 JW0402  DESIGNATION -  H 47
 JW0402  PID         -  JW0402
 JW0402  STATE/COUNTY-  MD/ALLEGANY
 JW0402  COUNTRY     -  US
 JW0402  USGS QUAD   -  CUMBERLAND (2016)
 JW0402
 JW0402                         *CURRENT SURVEY CONTROL
 JW0402  ______________________________________________________________________
 JW0402* NAD 83(1986) POSITION- 39 38 59.5    (N) 078 45 49.1    (W)   HD_HELD2
 JW0402* NAVD 88 ORTHO HEIGHT -   191.559 (meters)      628.47  (feet) ADJUSTED
 JW0402  ______________________________________________________________________
 JW0402  GEOID HEIGHT    -        -32.717 (meters)                     GEOID18
 JW0402  DYNAMIC HEIGHT  -        191.449 (meters)      628.11  (feet) COMP
 JW0402  MODELED GRAVITY -    980,045.2   (mgal)                       NAVD 88
 JW0402
 JW0402  VERT ORDER      -  FIRST     CLASS II
 JW0402
 JW0402.The horizontal coordinates were established by autonomous hand held GPS
 JW0402.observations and have an estimated accuracy of +/- 10 meters.
 JW0402
 JW0402.The orthometric height was determined by differential leveling and
 JW0402.adjusted by the NATIONAL GEODETIC SURVEY
 JW0402.in June 1991.
 JW0402
 JW0402.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0402.GEOID18 height accuracy estimate available here.
 JW0402
 JW0402.Click photographs - Photos may exist for this station.
 JW0402
 JW0402.The dynamic height is computed by dividing the NAVD 88
 JW0402.geopotential number by the normal gravity value computed on the
 JW0402.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0402.degrees latitude (g = 980.6199 gals.).
 JW0402
 JW0402.The modeled gravity was interpolated from observed gravity values.
 JW0402
 JW0402;                    North         East    Units  Estimated Accuracy
 JW0402;SPC MD       -   221,616.      248,633.      MT  (+/- 10 meters HH2 GPS)
 JW0402
 JW0402_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9187591286(NAD 83)
 JW0402
 JW0402                          SUPERSEDED SURVEY CONTROL
 JW0402
 JW0402  NGVD 29 (??/??/92)  191.754  (m)          629.11   (f) ADJ UNCH    1 2
 JW0402
 JW0402.Superseded values are not recommended for survey control.
 JW0402
 JW0402.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0402.See file dsdata.pdf to determine how the superseded data were derived.
 JW0402
 JW0402_MARKER: DB = BENCH MARK DISK
 JW0402_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JW0402_SP_SET: RETAINING WALL
 JW0402_STAMPING: H 47 1941
 JW0402_MARK LOGO: CGS
 JW0402_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW0402_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW0402+STABILITY: SURFACE MOTION
 JW0402_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JW0402+SATELLITE: SATELLITE OBSERVATIONS - March 25, 2023
 JW0402
 JW0402  HISTORY     - Date     Condition        Report By
 JW0402  HISTORY     - 1941     MONUMENTED       CGS
 JW0402  HISTORY     - 1967     GOOD             CGS
 JW0402  HISTORY     - 1983     GOOD             NGS
 JW0402  HISTORY     - 19911105 GOOD             MDSHA
 JW0402  HISTORY     - 19921104 GOOD             MDSHA
 JW0402  HISTORY     - 20090321 GOOD             GEOCAC
 JW0402  HISTORY     - 20100318 GOOD             USACE
 JW0402  HISTORY     - 20100501 GOOD             INDIV
 JW0402  HISTORY     - 20230325 GOOD             WTBALL
 JW0402
 JW0402                          STATION DESCRIPTION
 JW0402
 JW0402'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0402'AT CUMBERLAND.
 JW0402'AT CUMBERLAND, AT THE WESTERN MARYLAND RAILROAD STATION, SET IN
 JW0402'THE RETAINING WALL, 13.8 FEET EAST OF THE NORTHEAST CORNER OF THE
 JW0402'STATION, 23.7 FEET SOUTHEAST OF THE SOUTHEAST RAIL OF THE TRACK
 JW0402'NEAREST THE STATION, 16 FEET SOUTH OF THE 6TH. IRON PIPE ROOF
 JW0402'SUPPORT, 1 FOOT NORTH OF IRON GUARD RAIL FENCE.  A STANDARD DISK
 JW0402'STAMPED H-47 1941.
 JW0402
 JW0402                          STATION RECOVERY (1967)
 JW0402
 JW0402'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967
 JW0402'RECOVERED IN GOOD CONDITION.
 JW0402
 JW0402                          STATION RECOVERY (1983)
 JW0402
 JW0402'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0402'RECOVERED IN GOOD CONDITION, DESCRIPTION IS ADEQUATE EXCEPT THE
 JW0402'RAILROAD STATION IS NOW ABANDONED, THE CITY OF CUMBERLAND HAS PLANS TO
 JW0402'MAKE THE BUILDING THE CULTURAL TRANSPORTATION MUSEUM.
 JW0402
 JW0402                          STATION RECOVERY (1991)
 JW0402
 JW0402'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JW0402'RECOVERED IN GOOD CONDITION.
 JW0402
 JW0402                          STATION RECOVERY (1992)
 JW0402
 JW0402'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW0402'RECOVERED IN GOOD CONDITION.
 JW0402
 JW0402                          STATION RECOVERY (2009)
 JW0402
 JW0402'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 JW0402'THE BUILDING NOW SERVES AS THE CUMBERLAND C AND O CANAL NATIONAL
 JW0402'HISTORIC PARK VISITOR'S CENTER.
 JW0402
 JW0402                          STATION RECOVERY (2010)
 JW0402
 JW0402'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2010 (JBC)
 JW0402'RECOVERED IN GOOD CONDITION.  MARK IS APPROXIMATELY 628.89' ABOVE THE
 JW0402'CONSTRUCTION/HYDRAULIC DATUM FOR THE CUMBERLAND, MD AND RIDGELEY, WV
 JW0402'LEVEE PROJECTS BASED ON RTK GPS SURVEYS BY USACE BALTIMORE IN MARCH
 JW0402'2010.
 JW0402
 JW0402                          STATION RECOVERY (2010)
 JW0402
 JW0402'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2010 (RAS)
 JW0402'STATION RECOVERED IN GOOD CONDITION WITH THE FOLLOWING OBSERVATIONS.
 JW0402'THE STATION IS SET FLUSH WITH THE TOP OF A CONCRETE RETAINING WALL IN
 JW0402'THE SIDEWALK 13.8 FEET NORTH OF THE NORTHWEST CORNER OF THE C+O CANAL
 JW0402'NATIONAL HISTORICAL PARK VISITOR CENTER AND 1.0 FEET WEST OF AN IRON
 JW0402'FENCE.
 JW0402'DIGITAL PHOTOS SUBMITTED VIA CD. RAS/TES
 JW0402
 JW0402                          STATION RECOVERY (2023)
 JW0402
 JW0402'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2023 (JMB)
 JW0402'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0664 ***********************************************************************
 HV0664  DESIGNATION -  H 48
 HV0664  PID         -  HV0664
 HV0664  STATE/COUNTY-  MD/ST MARYS
 HV0664  COUNTRY     -  US
 HV0664  USGS QUAD   -  STRATFORD HALL (2019)
 HV0664
 HV0664                         *CURRENT SURVEY CONTROL
 HV0664  ______________________________________________________________________
 HV0664* NAD 83(1986) POSITION- 38 14 22.7    (N) 076 45 55.4    (W)   HD_HELD2
 HV0664* NAVD 88 ORTHO HEIGHT -     3.618 (meters)       11.87  (feet) ADJUSTED
 HV0664  ______________________________________________________________________
 HV0664  GEOID HEIGHT    -        -33.720 (meters)                     GEOID18
 HV0664  DYNAMIC HEIGHT  -          3.616 (meters)       11.86  (feet) COMP
 HV0664  MODELED GRAVITY -    980,024.3   (mgal)                       NAVD 88
 HV0664
 HV0664  VERT ORDER      -  SECOND    CLASS 0
 HV0664
 HV0664.The horizontal coordinates were established by autonomous hand held GPS
 HV0664.observations and have an estimated accuracy of +/- 10 meters.
 HV0664
 HV0664.The orthometric height was determined by differential leveling and
 HV0664.adjusted by the NATIONAL GEODETIC SURVEY
 HV0664.in June 1991.
 HV0664
 HV0664.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0664.GEOID18 height accuracy estimate available here.
 HV0664
 HV0664.Click photographs - Photos may exist for this station.
 HV0664
 HV0664.The dynamic height is computed by dividing the NAVD 88
 HV0664.geopotential number by the normal gravity value computed on the
 HV0664.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0664.degrees latitude (g = 980.6199 gals.).
 HV0664
 HV0664.The modeled gravity was interpolated from observed gravity values.
 HV0664
 HV0664;                    North         East    Units  Estimated Accuracy
 HV0664;SPC MD       -    63,629.      420,539.      MT  (+/- 10 meters HH2 GPS)
 HV0664
 HV0664_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4550333877(NAD 83)
 HV0664
 HV0664                          SUPERSEDED SURVEY CONTROL
 HV0664
 HV0664  NGVD 29 (11/26/84)    3.899  (m)           12.79   (f) ADJUSTED    2 0
 HV0664
 HV0664.Superseded values are not recommended for survey control.
 HV0664
 HV0664.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0664.See file dsdata.pdf to determine how the superseded data were derived.
 HV0664
 HV0664_MARKER: DB = BENCH MARK DISK
 HV0664_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0664_STAMPING: H 48 1942
 HV0664_MARK LOGO: CGS
 HV0664_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0664+STABILITY: SURFACE MOTION
 HV0664_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0664+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2009
 HV0664
 HV0664  HISTORY     - Date     Condition        Report By
 HV0664  HISTORY     - 1942     MONUMENTED       CGS
 HV0664  HISTORY     - 20090728 GOOD             USACE
 HV0664  HISTORY     - 20100123 GOOD             GEOCAC
 HV0664
 HV0664                          STATION DESCRIPTION
 HV0664
 HV0664'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0664'1.3 MI N FROM COLTON POINT.
 HV0664'THIS MARK IS ABOUT 1.3 MILES NORTH OF THE COLTON POINT POST OFFICE,
 HV0664'AT A WHITE CHURCH BUILDING, ACROSS THE HIGHWAY FROM AN ESSO
 HV0664'FILLING STATION, AT A WYE JUNCTION OF THE HIGHWAY AND A DIRT
 HV0664'ROAD RUNNING SOUTH, 47 FEET SOUTHEAST OF THE SOUTHEAST CORNER
 HV0664'OF THE CHURCH BUILDING, 81 FEET SOUTH OF THE CENTER OF THE JUNCTION,
 HV0664'IN LINE WITH THE SOUTH FENCE OF THE CHURCH YARD, AND IS A STANDARD
 HV0664'DISK SET IN THE TOP OF A CONCRETE POST.
 HV0664
 HV0664                          STATION RECOVERY (2009)
 HV0664
 HV0664'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2009 (HLC)
 HV0664'RECOVERED AS DESCRIBED EXCEPT FOR THE FOLLOWING.
 HV0664'THE CHURCH IS NO LONGER IN USE AND IS NOT VISIBLE FROM THE ROAD AND
 HV0664'THE GAS STATION IS NO LONGER THERE.
 HV0664'THE NEW DESCRIBTION IS 47 FEET SOUTHEAST OF THE CORNER OF THE CHURCH
 HV0664'71.63 FEET NORTHWEST OF POWER POLE NIMBER 123. 11.0 FEET SOUTHEAST OF
 HV0664'A 28 INCH PINE TREE. 21.65 FEET NORTHWEST OF POWER POLE NUMBER 76
 HV0664'(4-40) STATION IS ON THE WESTSIDE OF RT 242, OPPOSITE THE ENTRANCE TO
 HV0664'KOPLES MARINA
 HV0664'
 HV0664
 HV0664                          STATION RECOVERY (2010)
 HV0664
 HV0664'RECOVERY NOTE BY GEOCACHING 2010 (DER)
 HV0664'FOUND AFTER REMOVING LEAF LITTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0695 ***********************************************************************
 HV0695  DESIGNATION -  H 49 RESET
 HV0695  PID         -  HV0695
 HV0695  STATE/COUNTY-  MD/CHARLES
 HV0695  COUNTRY     -  US
 HV0695  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0695
 HV0695                         *CURRENT SURVEY CONTROL
 HV0695  ______________________________________________________________________
 HV0695* NAD 83(1986) POSITION- 38 28 34.     (N) 076 49 33.     (W)   SCALED
 HV0695* NAVD 88 ORTHO HEIGHT -    55.52  (meters)      182.2   (feet) RESET
 HV0695  ______________________________________________________________________
 HV0695  GEOID HEIGHT    -        -33.496 (meters)                     GEOID18
 HV0695  VERT ORDER      -  THIRD
 HV0695
 HV0695.The horizontal coordinates were scaled from a map and have
 HV0695.an estimated accuracy of +/- 6 seconds.
 HV0695
 HV0695.The orthometric height was computed from unverified reset data.
 HV0695
 HV0695.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0695.GEOID18 height accuracy estimate available here.
 HV0695
 HV0695.Click photographs - Photos may exist for this station.
 HV0695
 HV0695;                    North         East    Units  Estimated Accuracy
 HV0695;SPC MD       -    89,870.      415,200.      MT  (+/- 180 meters Scaled)
 HV0695
 HV0695_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH407602(NAD 83)
 HV0695
 HV0695                          SUPERSEDED SURVEY CONTROL
 HV0695
 HV0695  NGVD 29 (??/??/??)   54.91   (m)          180.2    (f) RESET       3  
 HV0695
 HV0695.Superseded values are not recommended for survey control.
 HV0695
 HV0695.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0695.See file dsdata.pdf to determine how the superseded data were derived.
 HV0695
 HV0695_MARKER: DB = BENCH MARK DISK
 HV0695_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0695_STAMPING: H 49 RESET 1953
 HV0695_MARK LOGO: CGS
 HV0695_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0695
 HV0695  HISTORY     - Date     Condition        Report By
 HV0695  HISTORY     - 1953     MONUMENTED       CGS
 HV0695
 HV0695                          STATION DESCRIPTION
 HV0695
 HV0695'DESCRIBED BY COAST AND GEODETIC SURVEY 1953
 HV0695'3.2 MI W FROM NEW MARKET.
 HV0695'IN CHARLES COUNTY, 3.2 MILES WEST ALONG STATE HIGHWAY 6 FROM THE
 HV0695'JUNCTION OF STATE HIGHWAY 5 AT NEW MARKET, ST. MARYS COUNTY,
 HV0695'AT DUBOIS, 100 FEET WEST OF A POINT IN FRONT OF THE W.J. PALMER
 HV0695'1-1/2 STORY FRAME HOUSE (250 FEET NORTH OF THE HIGHWAY), AT A
 HV0695'SMALL CULVERT, IN THE WEST END OF THE NORTH HEADWALL, AND 16 FEET
 HV0695'NORTH OF THE CENTERLINE OF THE HIGHWAY.  A STANDARD DISK, STAMPED
 HV0695'H 49 RESET 1953.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0289 ***********************************************************************
 HU0289  DESIGNATION -  H 5 RESET
 HU0289  PID         -  HU0289
 HU0289  STATE/COUNTY-  MD/WICOMICO
 HU0289  COUNTRY     -  US
 HU0289  USGS QUAD   -  WHALEYVILLE (2016)
 HU0289
 HU0289                         *CURRENT SURVEY CONTROL
 HU0289  ______________________________________________________________________
 HU0289* NAD 83(1986) POSITION- 38 23 41.6    (N) 075 20 58.5    (W)   HD_HELD2
 HU0289* NAVD 88 ORTHO HEIGHT -    11.466 (meters)       37.62  (feet) ADJUSTED
 HU0289  ______________________________________________________________________
 HU0289  GEOID HEIGHT    -        -35.909 (meters)                     GEOID18
 HU0289  DYNAMIC HEIGHT  -         11.459 (meters)       37.60  (feet) COMP
 HU0289  MODELED GRAVITY -    980,009.2   (mgal)                       NAVD 88
 HU0289
 HU0289  VERT ORDER      -  SECOND    CLASS I
 HU0289
 HU0289.The horizontal coordinates were established by autonomous hand held GPS
 HU0289.observations and have an estimated accuracy of +/- 10 meters.
 HU0289
 HU0289.The orthometric height was determined by differential leveling and
 HU0289.adjusted by the NATIONAL GEODETIC SURVEY
 HU0289.in June 1991.
 HU0289
 HU0289.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0289.GEOID18 height accuracy estimate available here.
 HU0289
 HU0289.Click photographs - Photos may exist for this station.
 HU0289
 HU0289.The dynamic height is computed by dividing the NAVD 88
 HU0289.geopotential number by the normal gravity value computed on the
 HU0289.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0289.degrees latitude (g = 980.6199 gals.).
 HU0289
 HU0289.The modeled gravity was interpolated from observed gravity values.
 HU0289
 HU0289;                    North         East    Units  Estimated Accuracy
 HU0289;SPC MD       -    82,139.      544,169.      MT  (+/- 10 meters HH2 GPS)
 HU0289
 HU0289_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH6947249688(NAD 83)
 HU0289
 HU0289                          SUPERSEDED SURVEY CONTROL
 HU0289
 HU0289  NGVD 29 (??/??/??)   11.73   (m)           38.5    (f) RESET       3  
 HU0289  NGVD 29 (06/12/91)   11.712  (m)           38.43   (f) ADJUSTED    2 1
 HU0289
 HU0289.Superseded values are not recommended for survey control.
 HU0289
 HU0289.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0289.See file dsdata.pdf to determine how the superseded data were derived.
 HU0289
 HU0289_MARKER: DB = BENCH MARK DISK
 HU0289_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU0289_SP_SET: CURB
 HU0289_STAMPING: H 5 RESET 1965
 HU0289_MARK LOGO: CGS
 HU0289_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU0289_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU0289+SATELLITE: SATELLITE OBSERVATIONS - September 22, 2004
 HU0289
 HU0289  HISTORY     - Date     Condition        Report By
 HU0289  HISTORY     - 1965     MONUMENTED       CGS
 HU0289  HISTORY     - 19900221 POOR             NGS
 HU0289  HISTORY     - 20040104 GOOD             USPSQD
 HU0289  HISTORY     - 20040922 GOOD             GEOCAC
 HU0289
 HU0289                          STATION DESCRIPTION
 HU0289
 HU0289'DESCRIBED BY COAST AND GEODETIC SURVEY 1965
 HU0289'AT WILLARDS.
 HU0289'AT WILLARDS, WICOMICO COUNTY, 61 FEET NORTHWEST OF THE NORTHWEST
 HU0289'CORNER OF THE FARMERS BANK, 47 FEET SOUTH OF THE CENTERLINE OF AN
 HU0289'EAST-WEST STREET, 37 FEET EAST OF THE CENTERLINE OF MAIN STREET,
 HU0289'AND SET FLUSH IN A DRILL HOLE IN THE CONCRETE CURB.
 HU0289
 HU0289                          STATION RECOVERY (1990)
 HU0289
 HU0289'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0289'IN WILLARDS, AT THE INTERSECTION OF MAIN AND MARKET STREETS, IN THE
 HU0289'SOUTH CURB OF MARKET STREET, 18.6 M (61.02 FT) NORTHWEST OF THE
 HU0289'NORTHWEST CORNER OF THE FARMERS BANK, 13.0 M (42.65 FT) SOUTH OF THE
 HU0289'CENTER OF MARKET STREET, 10.4 M (34.12 FT) EAST OF THE CENTER OF MAIN
 HU0289'STREET, 4.3 M (14.11 FT) WEST OF THE CENTER OF A DRIVEWAY, 1.2 M
 HU0289'(3.94 FT) NORTHEAST OF A FIRE HYDRANT, AND 0.2 M (0.66 FT) ABOVE THE
 HU0289'LEVEL OF THE STREET.  NOTE--THE CURB IS CRACKED FROM THE DISK IN BOTH
 HU0289'DIRECTIONS, BUT THE DISK IS SOLID IN PLACE.
 HU0289
 HU0289                          STATION RECOVERY (2004)
 HU0289
 HU0289'RECOVERY NOTE BY US POWER SQUADRON 2004 (KPM)
 HU0289'RECOVERED IN GOOD CONDITION.
 HU0289
 HU0289                          STATION RECOVERY (2004)
 HU0289
 HU0289'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU0289'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0637 ***********************************************************************
 HV0637  DESIGNATION -  H 50 MDGS RESET 1950
 HV0637  PID         -  HV0637
 HV0637  STATE/COUNTY-  MD/CHARLES
 HV0637  COUNTRY     -  US
 HV0637  USGS QUAD   -  COLONIAL BEACH NORTH (2019)
 HV0637
 HV0637                         *CURRENT SURVEY CONTROL
 HV0637  ______________________________________________________________________
 HV0637* NAD 83(1986) POSITION- 38 17 56.     (N) 076 52 51.     (W)   SCALED
 HV0637* NAVD 88 ORTHO HEIGHT -     4.58  (meters)       15.0   (feet) RESET
 HV0637  ______________________________________________________________________
 HV0637  GEOID HEIGHT    -        -33.649 (meters)                     GEOID18
 HV0637  VERT ORDER      -  THIRD
 HV0637
 HV0637.The horizontal coordinates were scaled from a map and have
 HV0637.an estimated accuracy of +/- 6 seconds.
 HV0637
 HV0637.The orthometric height was computed from unverified reset data.
 HV0637
 HV0637.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0637.GEOID18 height accuracy estimate available here.
 HV0637
 HV0637.Click photographs - Photos may exist for this station.
 HV0637
 HV0637;                    North         East    Units  Estimated Accuracy
 HV0637;SPC MD       -    70,190.      410,420.      MT  (+/- 180 meters Scaled)
 HV0637
 HV0637_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH355406(NAD 83)
 HV0637
 HV0637                          SUPERSEDED SURVEY CONTROL
 HV0637
 HV0637  NGVD 29 (??/??/??)    4.85   (m)           15.9    (f) RESET       3  
 HV0637
 HV0637.Superseded values are not recommended for survey control.
 HV0637
 HV0637.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0637.See file dsdata.pdf to determine how the superseded data were derived.
 HV0637
 HV0637_MARKER: DB = BENCH MARK DISK
 HV0637_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0637_STAMPING: H 50 RESET 1950
 HV0637_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0637+STABILITY: SURFACE MOTION
 HV0637
 HV0637  HISTORY     - Date     Condition        Report By
 HV0637  HISTORY     - 1950     MONUMENTED       MDSRC
 HV0637
 HV0637                          STATION DESCRIPTION
 HV0637
 HV0637'DESCRIBED BY MD STATE ROADS COMM 1950
 HV0637'2.1 MI SE FROM TOMPKINSVILLE.
 HV0637'2.1 MILES SOUTHEAST ALONG STATE HIGHWAY 3 FROM THE ROAD JUNCTION
 HV0637'AT TOMPKINSVILLE, CHARLES COUNTY, AT ISSUE, 84 FEET NORTHWEST OF
 HV0637'THE NORTHWEST CORNER OF A WHITE CHURCH, 105 FEET NORTH OF THE
 HV0637'NORTHEAST CORNER OF A WHITE HOUSE, IN LINE WITH THE EAST SIDE
 HV0637'OF THE HOUSE, AND 42.5 FEET EAST OF THE CNETERLINE OF THE HIGHWAY
 HV0637'AT SURVEY STATION 408-56.  A STANDARD DISK, STAMPED H 50 RESET
 HV0637'1950 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES
 HV0637'ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0274 ***********************************************************************
 HV0274  DESIGNATION -  H 51
 HV0274  PID         -  HV0274
 HV0274  STATE/COUNTY-  MD/DORCHESTER
 HV0274  COUNTRY     -  US
 HV0274  USGS QUAD   -  CHURCH CREEK (2016)
 HV0274
 HV0274                         *CURRENT SURVEY CONTROL
 HV0274  ______________________________________________________________________
 HV0274* NAD 83(1986) POSITION- 38 30 29.     (N) 076 08 50.     (W)   SCALED
 HV0274* NAVD 88 ORTHO HEIGHT -     1.463 (meters)        4.80  (feet) ADJUSTED
 HV0274  ______________________________________________________________________
 HV0274  GEOID HEIGHT    -        -35.006 (meters)                     GEOID18
 HV0274  DYNAMIC HEIGHT  -          1.462 (meters)        4.80  (feet) COMP
 HV0274  MODELED GRAVITY -    980,013.5   (mgal)                       NAVD 88
 HV0274
 HV0274  VERT ORDER      -  SECOND    CLASS 0
 HV0274
 HV0274.The horizontal coordinates were scaled from a map and have
 HV0274.an estimated accuracy of +/- 6 seconds.
 HV0274
 HV0274.The orthometric height was determined by differential leveling and
 HV0274.adjusted by the NATIONAL GEODETIC SURVEY
 HV0274.in June 1991.
 HV0274
 HV0274.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0274.GEOID18 height accuracy estimate available here.
 HV0274
 HV0274.Click photographs - Photos may exist for this station.
 HV0274
 HV0274.The dynamic height is computed by dividing the NAVD 88
 HV0274.geopotential number by the normal gravity value computed on the
 HV0274.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0274.degrees latitude (g = 980.6199 gals.).
 HV0274
 HV0274.The modeled gravity was interpolated from observed gravity values.
 HV0274
 HV0274;                    North         East    Units  Estimated Accuracy
 HV0274;SPC MD       -    93,750.      474,380.      MT  (+/- 180 meters Scaled)
 HV0274
 HV0274_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH999628(NAD 83)
 HV0274
 HV0274                          SUPERSEDED SURVEY CONTROL
 HV0274
 HV0274  NGVD 29 (02/24/95)    1.695  (m)            5.56   (f) ADJUSTED    2 0
 HV0274  NGVD 29 (11/26/84)    1.700  (m)            5.58   (f) SUPERSEDED  2 0
 HV0274
 HV0274.Superseded values are not recommended for survey control.
 HV0274
 HV0274.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0274.See file dsdata.pdf to determine how the superseded data were derived.
 HV0274
 HV0274_MARKER: DB = BENCH MARK DISK
 HV0274_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0274_STAMPING: H 51 1942
 HV0274_MARK LOGO: CGS
 HV0274_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0274+STABILITY: SURFACE MOTION
 HV0274
 HV0274  HISTORY     - Date     Condition        Report By
 HV0274  HISTORY     - 1942     MONUMENTED       CGS
 HV0274  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0274
 HV0274                          STATION DESCRIPTION
 HV0274
 HV0274'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0274'6 MI SW FROM CAMBRIDGE.
 HV0274'THIS MARK IS ABOUT 6 MILES SOUTHWEST OF THE INTERSECTION OF RACE
 HV0274'AND WASHINGTON STREETS AT CAMBRIDGE, DORCHESTER COUNTY, ALONG
 HV0274'HIGHWAY 16, 0.5 MILE NORTHEAST OF CHURCH CREEK, NEAR A SMALL 2-STORY
 HV0274'YELLOW HOUSE, 23.8 FEET NORTHWEST OF THE CENTER LINE OF THE
 HV0274'HIGHWAY, 63 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE HOUSE,
 HV0274'30 FEET SOUTHWEST OF A TELEPHONE POLE, AND IS A STANDARD DISK
 HV0274'SET IN THE TOP OF A CONCRETE POST ABOUT 2 FEET SOUTHEAST OF A
 HV0274'STANDARD REFERENCE POST.
 HV0274
 HV0274                          STATION RECOVERY (1971)
 HV0274
 HV0274'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0274'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0471 ***********************************************************************
 HV0471  DESIGNATION -  H 52
 HV0471  PID         -  HV0471
 HV0471  STATE/COUNTY-  MD/DORCHESTER
 HV0471  COUNTRY     -  US
 HV0471  USGS QUAD   -  HONGA (2016)
 HV0471
 HV0471                         *CURRENT SURVEY CONTROL
 HV0471  ______________________________________________________________________
 HV0471* NAD 83(2011) POSITION- 38 21 00.81803(N) 076 08 25.44838(W)   ADJUSTED
 HV0471* NAD 83(2011) ELLIP HT-   -34.948 (meters)        (06/27/12)   ADJUSTED
 HV0471* NAD 83(2011) EPOCH   -  2010.00
 HV0471* NAVD 88 ORTHO HEIGHT -     0.346 (meters)        1.14  (feet) ADJUSTED
 HV0471  ______________________________________________________________________
 HV0471  GEOID HEIGHT    -        -35.286 (meters)                     GEOID18
 HV0471  NAD 83(2011) X  -  1,199,723.450 (meters)                     COMP
 HV0471  NAD 83(2011) Y  - -4,862,558.874 (meters)                     COMP
 HV0471  NAD 83(2011) Z  -  3,935,982.980 (meters)                     COMP
 HV0471  LAPLACE CORR    -         -3.28  (seconds)                    DEFLEC18
 HV0471  DYNAMIC HEIGHT  -          0.345 (meters)        1.13  (feet) COMP
 HV0471  MODELED GRAVITY -    979,996.6   (mgal)                       NAVD 88
 HV0471
 HV0471  VERT ORDER      -  SECOND    CLASS 0
 HV0471
 HV0471  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0471  Standards:
 HV0471         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0471            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0471  -------------------------------------------------------------------
 HV0471  NETWORK    0.95   2.21           0.42   0.35   1.13     -0.04220084
 HV0471  -------------------------------------------------------------------
 HV0471  Click here for local accuracies and other accuracy information.
 HV0471
 HV0471.The horizontal coordinates were established by GPS observations
 HV0471.and adjusted by the National Geodetic Survey in June 2012.
 HV0471
 HV0471.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0471.been affixed to the stable North American tectonic plate. See 
 HV0471.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0471
 HV0471.The horizontal coordinates are valid at the epoch date displayed above
 HV0471.which is a decimal equivalence of Year/Month/Day.
 HV0471
 HV0471.The orthometric height was determined by differential leveling and
 HV0471.adjusted by the NATIONAL GEODETIC SURVEY
 HV0471.in June 1991.
 HV0471
 HV0471.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0471.GEOID18 height accuracy estimate available here.
 HV0471
 HV0471.Click photographs - Photos may exist for this station.
 HV0471
 HV0471.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0471
 HV0471.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0471
 HV0471.The ellipsoidal height was determined by GPS observations
 HV0471.and is referenced to NAD 83.
 HV0471
 HV0471.The dynamic height is computed by dividing the NAVD 88
 HV0471.geopotential number by the normal gravity value computed on the
 HV0471.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0471.degrees latitude (g = 980.6199 gals.).
 HV0471
 HV0471.The modeled gravity was interpolated from observed gravity values.
 HV0471
 HV0471. The following values were computed from the NAD 83(2011) position.
 HV0471
 HV0471;                    North         East     Units Scale Factor Converg.
 HV0471;SPC MD       -    76,231.951   475,138.362   MT  0.99999164   +0 32 22.2
 HV0471;SPC MD       -   250,104.33  1,558,849.78   sFT  0.99999164   +0 32 22.2
 HV0471;UTM  18      - 4,245,289.972   400,352.238   MT  0.99972229   -0 42 27.5
 HV0471
 HV0471!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0471!SPC MD       -   1.00000548  x   0.99999164  =   0.99999712
 HV0471!UTM  18      -   1.00000548  x   0.99972229  =   0.99972777
 HV0471
 HV0471_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0035245289(NAD 83)
 HV0471
 HV0471                          SUPERSEDED SURVEY CONTROL
 HV0471
 HV0471  NAD 83(2007)-  38 21 00.81810(N)    076 08 25.44913(W) AD(2002.00) B
 HV0471  ELLIP H (02/12/09)  -34.939  (m)                       GP(2002.00) 5 1
 HV0471  NAD 83(1991)-  38 21 00.81814(N)    076 08 25.44872(W) AD(       ) B
 HV0471  ELLIP H (02/28/06)  -34.936  (m)                       GP(       ) 5 1
 HV0471  NAVD 88               0.35   (m)            1.1    (f) LEVELING    3  
 HV0471  NGVD 29 (11/26/84)    0.570  (m)            1.87   (f) ADJUSTED    2 0
 HV0471
 HV0471.Superseded values are not recommended for survey control.
 HV0471
 HV0471.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0471.See file dsdata.pdf to determine how the superseded data were derived.
 HV0471
 HV0471_MARKER: DB = BENCH MARK DISK
 HV0471_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV0471_SP_SET: HEADWALL
 HV0471_STAMPING: H 52 1942
 HV0471_MARK LOGO: CGS
 HV0471_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV0471_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0471_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0471+SATELLITE: SATELLITE OBSERVATIONS - September 09, 2005
 HV0471
 HV0471  HISTORY     - Date     Condition        Report By
 HV0471  HISTORY     - 1942     MONUMENTED       CGS
 HV0471  HISTORY     - 20050909 GOOD             NGS
 HV0471
 HV0471                          STATION DESCRIPTION
 HV0471
 HV0471'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0471'7.3 MI SE FROM GOLDEN HILL.
 HV0471'THIS MARK IS ALONG HIGHWAY 336, ABOUT 7.3 MILES SOUTHEAST OF THE
 HV0471'POST OFFICE AT GOLDEN HILL, DORCHESTER COUNTY, 0.1 MILE SOUTHEAST
 HV0471'OF THE LAKESVILLE JUNCTION, SET IN THE HEADWALL OF A CONCRETE
 HV0471'CULVERT, 250 FEET NORTHWEST OF A SCHOOL HOUSE, 20.6 FEET SOUTHWEST
 HV0471'OF THE CENTER LINE OF THE HIGHWAY, AND IS A STANDARD DISK ABOUT
 HV0471'LEVEL WITH THE PAVEMENT.
 HV0471
 HV0471                          STATION RECOVERY (2005)
 HV0471
 HV0471'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2005 (JRO)
 HV0471'RECOVERED IN USABLE CONDITION. MARK IS IN AN L-SHAPED HEADWALL, TWO
 HV0471'SECTIONS ABOUT 3 FT  LONG, AT THE CORNER OF HEADWALL, ABOUT 4 FT
 HV0471'TOWARD ROAD (EAST) FROM ORANGE WP. OK FOR  GEODETIC GPS--TREES TO EAST
 HV0471'ALONG ROAD ARE UP ABOUT 30 DEGREES AND TO SOUTH ABOUT 20  DEGREES.
 HV0471'HEADWALL IS CRUMBLING SOMEWHAT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0073 ***********************************************************************
 HV0073  DESIGNATION -  H 53
 HV0073  PID         -  HV0073
 HV0073  STATE/COUNTY-  MD/TALBOT
 HV0073  COUNTRY     -  US
 HV0073  USGS QUAD   -  SAINT MICHAELS (2016)
 HV0073
 HV0073                         *CURRENT SURVEY CONTROL
 HV0073  ______________________________________________________________________
 HV0073* NAD 83(1986) POSITION- 38 45 54.     (N) 076 11 58.     (W)   SCALED
 HV0073* NAVD 88 ORTHO HEIGHT -     2.160 (meters)        7.09  (feet) ADJUSTED
 HV0073  ______________________________________________________________________
 HV0073  GEOID HEIGHT    -        -34.435 (meters)                     GEOID18
 HV0073  DYNAMIC HEIGHT  -          2.158 (meters)        7.08  (feet) COMP
 HV0073  MODELED GRAVITY -    980,041.4   (mgal)                       NAVD 88
 HV0073
 HV0073  VERT ORDER      -  SECOND    CLASS 0
 HV0073
 HV0073.The horizontal coordinates were scaled from a map and have
 HV0073.an estimated accuracy of +/- 6 seconds.
 HV0073
 HV0073.The orthometric height was determined by differential leveling and
 HV0073.adjusted by the NATIONAL GEODETIC SURVEY
 HV0073.in June 1991.
 HV0073
 HV0073.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0073.GEOID18 height accuracy estimate available here.
 HV0073
 HV0073.Click photographs - Photos may exist for this station.
 HV0073
 HV0073.The dynamic height is computed by dividing the NAVD 88
 HV0073.geopotential number by the normal gravity value computed on the
 HV0073.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0073.degrees latitude (g = 980.6199 gals.).
 HV0073
 HV0073.The modeled gravity was interpolated from observed gravity values.
 HV0073
 HV0073;                    North         East    Units  Estimated Accuracy
 HV0073;SPC MD       -   122,220.      469,570.      MT  (+/- 180 meters Scaled)
 HV0073
 HV0073_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH957913(NAD 83)
 HV0073
 HV0073                          SUPERSEDED SURVEY CONTROL
 HV0073
 HV0073  NGVD 29 (11/26/84)    2.397  (m)            7.86   (f) ADJUSTED    2 0
 HV0073
 HV0073.Superseded values are not recommended for survey control.
 HV0073
 HV0073.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0073.See file dsdata.pdf to determine how the superseded data were derived.
 HV0073
 HV0073_MARKER: DB = BENCH MARK DISK
 HV0073_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0073_STAMPING: H 53 1942
 HV0073_MARK LOGO: CGS
 HV0073_PROJECTION: PROJECTING 5 CENTIMETERS
 HV0073_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0073+STABILITY: SURFACE MOTION
 HV0073
 HV0073  HISTORY     - Date     Condition        Report By
 HV0073  HISTORY     - 1942     MONUMENTED       CGS
 HV0073  HISTORY     - 19950417 MARK NOT FOUND   MDSHA
 HV0073  HISTORY     - 19950628 MARK NOT FOUND   USPSQD
 HV0073  HISTORY     - 19970110 MARK NOT FOUND   USPSQD
 HV0073
 HV0073                          STATION DESCRIPTION
 HV0073
 HV0073'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0073'1.6 MI W FROM NEWCOMB.
 HV0073'ALONG HIGHWAY 33 ABOUT 1.6 MILES WEST OF THE RAILROAD STATION
 HV0073'AT NEWCOMB, AT A ROAD LEADING NORTH TO MAIDEN POINT FARM, 24
 HV0073'FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 31.5 FEET WEST OF
 HV0073'THE CENTER LINE OF THE DIRT ROAD, 4 FEET NORTHEAST OF AN L TYPE
 HV0073'CULVERT HEADWALL, 2 FEET SOUTH OF A WHITE BOARD FENCE, AND IS
 HV0073'A BENCH MARK SET IN THE TOP OF A CONCRETE POST PROJECTING ABOUT
 HV0073'2 INCHES.
 HV0073
 HV0073                          STATION RECOVERY (1995)
 HV0073
 HV0073'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1995 (CAM)
 HV0073'MARK NOT FOUND.
 HV0073
 HV0073                          STATION RECOVERY (1995)
 HV0073
 HV0073'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0073'MARK NOT FOUND.
 HV0073
 HV0073                          STATION RECOVERY (1997)
 HV0073
 HV0073'RECOVERY NOTE BY US POWER SQUADRON 1997
 HV0073'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3368 ***********************************************************************
 JV3368  DESIGNATION -  H 54
 JV3368  PID         -  JV3368
 JV3368  STATE/COUNTY-  MD/WASHINGTON
 JV3368  COUNTRY     -  US
 JV3368  USGS QUAD   -  SMITHSBURG (2016)
 JV3368
 JV3368                         *CURRENT SURVEY CONTROL
 JV3368  ______________________________________________________________________
 JV3368* NAD 83(1986) POSITION- 39 42 19.     (N) 077 36 43.     (W)   SCALED
 JV3368* NAVD 88 ORTHO HEIGHT -   196.481 (meters)      644.62  (feet) ADJUSTED
 JV3368  ______________________________________________________________________
 JV3368  GEOID HEIGHT    -        -34.013 (meters)                     GEOID18
 JV3368  DYNAMIC HEIGHT  -        196.367 (meters)      644.25  (feet) COMP
 JV3368  MODELED GRAVITY -    980,044.3   (mgal)                       NAVD 88
 JV3368
 JV3368  VERT ORDER      -  SECOND    CLASS 0
 JV3368
 JV3368.The horizontal coordinates were scaled from a map and have
 JV3368.an estimated accuracy of +/- 6 seconds.
 JV3368
 JV3368.The orthometric height was determined by differential leveling and
 JV3368.adjusted by the NATIONAL GEODETIC SURVEY
 JV3368.in June 1991.
 JV3368
 JV3368.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3368.GEOID18 height accuracy estimate available here.
 JV3368
 JV3368.Click photographs - Photos may exist for this station.
 JV3368
 JV3368.The dynamic height is computed by dividing the NAVD 88
 JV3368.geopotential number by the normal gravity value computed on the
 JV3368.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3368.degrees latitude (g = 980.6199 gals.).
 JV3368
 JV3368.The modeled gravity was interpolated from observed gravity values.
 JV3368
 JV3368;                    North         East    Units  Estimated Accuracy
 JV3368;SPC MD       -   226,480.      347,520.      MT  (+/- 180 meters Scaled)
 JV3368
 JV3368_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ760983(NAD 83)
 JV3368
 JV3368                          SUPERSEDED SURVEY CONTROL
 JV3368
 JV3368  NGVD 29 (11/26/84)  196.666  (m)          645.23   (f) ADJUSTED    2 0
 JV3368
 JV3368.Superseded values are not recommended for survey control.
 JV3368
 JV3368.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3368.See file dsdata.pdf to determine how the superseded data were derived.
 JV3368
 JV3368_MARKER: DB = BENCH MARK DISK
 JV3368_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV3368_SP_SET: CULVERT HEADWALL
 JV3368_STAMPING: H 54 1942
 JV3368_MARK LOGO: CGS
 JV3368_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3368+STABILITY: SURFACE MOTION
 JV3368
 JV3368  HISTORY     - Date     Condition        Report By
 JV3368  HISTORY     - 1942     MONUMENTED       CGS
 JV3368  HISTORY     - 19981008 MARK NOT FOUND   MDSHA
 JV3368
 JV3368                          STATION DESCRIPTION
 JV3368
 JV3368'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3368'3.5 MI S FROM WAYNESBORO.
 JV3368'IN WASHINGTON COUNTY, MARYLAND, 3.5 MILES SOUTH ALONG PENNSYLVANIA
 JV3368'STATE HIGHWAY 316 FROM THE POST OFFICE AT WAYNESBORO, FRANKLIN
 JV3368'COUNTY, PENNSYLVANIA, THENCE 1.2 MILES SOUTHWEST ALONG MARYLAND
 JV3368'STATE HIGHWAY 60, 25 FEET SOUTHWEST OF THE CENTERLINE OF A COUNTRY
 JV3368'ROAD LEADING SOUTHEAST, 15 FEET SOUTHEAST OF THE CENTERLINE
 JV3368'OF THE HIGHWAY, 10.5 FEET WEST OF A FENCE CORNER POST, AND SET
 JV3368'IN THE SOUTHEAST HEADWALL OF AN 18-INCH PIPE CULVERT.  A STANDARD
 JV3368'DISK, STAMPED 54 1942.
 JV3368
 JV3368                          STATION RECOVERY (1998)
 JV3368
 JV3368'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 JV3368'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.  THE CONCRETE HEADWALL
 JV3368'HAS BEEN REMOVED AND REPLACED BY A K-TYPE DROP INLET DURING ROAD
 JV3368'WIDENING OF STATE HIGHWAY 60.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0706 ***********************************************************************
 HU0706  DESIGNATION -  H 55
 HU0706  PID         -  HU0706
 HU0706  STATE/COUNTY-  MD/WICOMICO
 HU0706  COUNTRY     -  US
 HU0706  USGS QUAD   -  SALISBURY (2016)
 HU0706
 HU0706                         *CURRENT SURVEY CONTROL
 HU0706  ______________________________________________________________________
 HU0706* NAD 83(1986) POSITION- 38 16 58.     (N) 075 33 02.     (W)   SCALED
 HU0706* NAVD 88 ORTHO HEIGHT -    14.900 (meters)       48.88  (feet) ADJUSTED
 HU0706  ______________________________________________________________________
 HU0706  GEOID HEIGHT    -        -35.988 (meters)                     GEOID18
 HU0706  DYNAMIC HEIGHT  -         14.890 (meters)       48.85  (feet) COMP
 HU0706  MODELED GRAVITY -    979,996.6   (mgal)                       NAVD 88
 HU0706
 HU0706  VERT ORDER      -  SECOND    CLASS 0
 HU0706
 HU0706.The horizontal coordinates were scaled from a map and have
 HU0706.an estimated accuracy of +/- 6 seconds.
 HU0706
 HU0706.The orthometric height was determined by differential leveling and
 HU0706.adjusted by the NATIONAL GEODETIC SURVEY
 HU0706.in June 1991.
 HU0706
 HU0706.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0706.GEOID18 height accuracy estimate available here.
 HU0706
 HU0706.Click photographs - Photos may exist for this station.
 HU0706
 HU0706.The dynamic height is computed by dividing the NAVD 88
 HU0706.geopotential number by the normal gravity value computed on the
 HU0706.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0706.degrees latitude (g = 980.6199 gals.).
 HU0706
 HU0706.The modeled gravity was interpolated from observed gravity values.
 HU0706
 HU0706;                    North         East    Units  Estimated Accuracy
 HU0706;SPC MD       -    69,400.      526,810.      MT  (+/- 180 meters Scaled)
 HU0706
 HU0706_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH518373(NAD 83)
 HU0706
 HU0706                          SUPERSEDED SURVEY CONTROL
 HU0706
 HU0706  NGVD 29 (11/26/84)   15.144  (m)           49.68   (f) ADJUSTED    2 0
 HU0706
 HU0706.Superseded values are not recommended for survey control.
 HU0706
 HU0706.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0706.See file dsdata.pdf to determine how the superseded data were derived.
 HU0706
 HU0706_MARKER: DB = BENCH MARK DISK
 HU0706_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0706_STAMPING: H 55 1942
 HU0706_MARK LOGO: CGS
 HU0706_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0706+STABILITY: SURFACE MOTION
 HU0706
 HU0706  HISTORY     - Date     Condition        Report By
 HU0706  HISTORY     - 1942     MONUMENTED       CGS
 HU0706  HISTORY     - 1962     GOOD             CGS
 HU0706  HISTORY     - 1975     MARK NOT FOUND   USGS
 HU0706
 HU0706                          STATION DESCRIPTION
 HU0706
 HU0706'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0706'1 MI N FROM ST LUKE.
 HU0706'IN WICOMICO COUNTY, ABOUT 1.0 MILE NORTH ALONG A DIRT ROAD FROM
 HU0706'THE ROAD JUNCTION AT ST. LUKE, WORCESTER COUNTY, 81 FEET NORTH OF
 HU0706'THE NORTHEAST CORNER OF A 2-STORY GREEN HOUSE, IN THE NORTHEAST
 HU0706'CORNER OF THE YARD, 25.3 FEET WEST OF THE CENTER LINE OF THE
 HU0706'ROAD, 18.8 FEET NORTHEAST OF A 30-INCH WHITE OAK TREE, AND ABOUT
 HU0706'LEVEL WITH THE ROAD.  A STANDARD DISK, STAMPED H 55 1942 AND SET
 HU0706'IN THE TOP OF A CONCRETE POST.
 HU0706
 HU0706                          STATION RECOVERY (1975)
 HU0706
 HU0706'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1975
 HU0706'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0394 ***********************************************************************
 HU0394  DESIGNATION -  H 56
 HU0394  PID         -  HU0394
 HU0394  STATE/COUNTY-  MD/WORCESTER
 HU0394  COUNTRY     -  US
 HU0394  USGS QUAD   -  TINGLES ISLAND (2016)
 HU0394
 HU0394                         *CURRENT SURVEY CONTROL
 HU0394  ______________________________________________________________________
 HU0394* NAD 83(1986) POSITION- 38 14 50.     (N) 075 10 17.     (W)   SCALED
 HU0394* NAVD 88 ORTHO HEIGHT -     1.569 (meters)        5.15  (feet) ADJUSTED
 HU0394  ______________________________________________________________________
 HU0394  GEOID HEIGHT    -        -36.151 (meters)                     GEOID18
 HU0394  DYNAMIC HEIGHT  -          1.568 (meters)        5.14  (feet) COMP
 HU0394  MODELED GRAVITY -    979,996.6   (mgal)                       NAVD 88
 HU0394
 HU0394  VERT ORDER      -  SECOND    CLASS 0
 HU0394
 HU0394.The horizontal coordinates were scaled from a map and have
 HU0394.an estimated accuracy of +/- 6 seconds.
 HU0394
 HU0394.The orthometric height was determined by differential leveling and
 HU0394.adjusted by the NATIONAL GEODETIC SURVEY
 HU0394.in June 1991.
 HU0394
 HU0394.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0394.GEOID18 height accuracy estimate available here.
 HU0394
 HU0394.Click photographs - Photos may exist for this station.
 HU0394
 HU0394.The dynamic height is computed by dividing the NAVD 88
 HU0394.geopotential number by the normal gravity value computed on the
 HU0394.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0394.degrees latitude (g = 980.6199 gals.).
 HU0394
 HU0394.The modeled gravity was interpolated from observed gravity values.
 HU0394
 HU0394;                    North         East    Units  Estimated Accuracy
 HU0394;SPC MD       -    66,050.      560,060.      MT  (+/- 180 meters Scaled)
 HU0394
 HU0394_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH850332(NAD 83)
 HU0394
 HU0394                          SUPERSEDED SURVEY CONTROL
 HU0394
 HU0394  NGVD 29 (11/26/84)    1.818  (m)            5.96   (f) ADJUSTED    2 0
 HU0394
 HU0394.Superseded values are not recommended for survey control.
 HU0394
 HU0394.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0394.See file dsdata.pdf to determine how the superseded data were derived.
 HU0394
 HU0394_MARKER: DB = BENCH MARK DISK
 HU0394_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0394_STAMPING: H 56 1942
 HU0394_MARK LOGO: CGS
 HU0394_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0394+STABILITY: SURFACE MOTION
 HU0394_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0394+SATELLITE: SATELLITE OBSERVATIONS - December 03, 2005
 HU0394
 HU0394  HISTORY     - Date     Condition        Report By
 HU0394  HISTORY     - 1942     MONUMENTED       CGS
 HU0394  HISTORY     - 1943     GOOD             CGS
 HU0394  HISTORY     - 20031230 GOOD             USPSQD
 HU0394  HISTORY     - 20051203 GOOD             USPSQD
 HU0394
 HU0394                          STATION DESCRIPTION
 HU0394
 HU0394'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0394'4.7 MI SE FROM BERLIN.
 HU0394'4.7 MILES SOUTHEAST ALONG STATE HIGHWAY 376 FROM THE CALVIN B.
 HU0394'TAYLOR BANKING CO. AT BERLIN, THENCE 3.3 MILES SOUTH ALONG A
 HU0394'GRAVEL ROAD, 59.0 FEET SOUTH OF A 26-INCH CORRUGATED IRON PIPE
 HU0394'CULVERT, 33.1 FEET SOUTHEAST OF THE CENTERLINE OF THE ROAD, 13.3
 HU0394'FEET SOUTHWEST OF A BLAZED OAK TREE, 13.3 FEET NORTHEAST OF A HOLLY
 HU0394'TREE, AND ABOUT LEVEL WITH THE ROAD.  A STANDARD DISK, STAMPED H
 HU0394'56 1942 AND SET IN THE TOP OF A CONCRETE POST.
 HU0394
 HU0394                          STATION RECOVERY (1943)
 HU0394
 HU0394'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943
 HU0394'RECOVERED IN GOOD CONDITION.
 HU0394
 HU0394                          STATION RECOVERY (2003)
 HU0394
 HU0394'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU0394'RECOVERED IN GOOD CONDITION.
 HU0394
 HU0394                          STATION RECOVERY (2005)
 HU0394
 HU0394'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HU0394'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0619 ***********************************************************************
 HU0619  DESIGNATION -  H 57
 HU0619  PID         -  HU0619
 HU0619  STATE/COUNTY-  MD/WICOMICO
 HU0619  COUNTRY     -  US
 HU0619  USGS QUAD   -  HEBRON (2016)
 HU0619
 HU0619                         *CURRENT SURVEY CONTROL
 HU0619  ______________________________________________________________________
 HU0619* NAD 83(1986) POSITION- 38 25 46.8    (N) 075 39 56.4    (W)   HD_HELD2
 HU0619* NAVD 88 ORTHO HEIGHT -    13.014 (meters)       42.70  (feet) ADJUSTED
 HU0619  ______________________________________________________________________
 HU0619  GEOID HEIGHT    -        -35.693 (meters)                     GEOID18
 HU0619  DYNAMIC HEIGHT  -         13.005 (meters)       42.67  (feet) COMP
 HU0619  MODELED GRAVITY -    980,011.5   (mgal)                       NAVD 88
 HU0619
 HU0619  VERT ORDER      -  SECOND    CLASS 0
 HU0619
 HU0619.The horizontal coordinates were established by autonomous hand held GPS
 HU0619.observations and have an estimated accuracy of +/- 10 meters.
 HU0619
 HU0619.The orthometric height was determined by differential leveling and
 HU0619.adjusted by the NATIONAL GEODETIC SURVEY
 HU0619.in June 1991.
 HU0619
 HU0619.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0619.GEOID18 height accuracy estimate available here.
 HU0619
 HU0619.Click photographs - Photos may exist for this station.
 HU0619
 HU0619.The dynamic height is computed by dividing the NAVD 88
 HU0619.geopotential number by the normal gravity value computed on the
 HU0619.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0619.degrees latitude (g = 980.6199 gals.).
 HU0619
 HU0619.The modeled gravity was interpolated from observed gravity values.
 HU0619
 HU0619;                    North         East    Units  Estimated Accuracy
 HU0619;SPC MD       -    85,548.      516,504.      MT  (+/- 10 meters HH2 GPS)
 HU0619
 HU0619_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4189853698(NAD 83)
 HU0619
 HU0619                          SUPERSEDED SURVEY CONTROL
 HU0619
 HU0619  NGVD 29 (06/12/91)   13.259  (m)           43.50   (f) ADJUSTED    2 0
 HU0619  NGVD 29 (??/??/87)   13.264  (m)           43.52   (f) SUPERSEDED  2 0
 HU0619
 HU0619.Superseded values are not recommended for survey control.
 HU0619
 HU0619.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0619.See file dsdata.pdf to determine how the superseded data were derived.
 HU0619
 HU0619_MARKER: DB = BENCH MARK DISK
 HU0619_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0619_STAMPING: H 57 1942
 HU0619_MARK LOGO: CGS
 HU0619_PROJECTION: FLUSH
 HU0619_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0619+STABILITY: SURFACE MOTION
 HU0619_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0619+SATELLITE: SATELLITE OBSERVATIONS - September 06, 2018
 HU0619
 HU0619  HISTORY     - Date     Condition        Report By
 HU0619  HISTORY     - 1942     MONUMENTED       CGS
 HU0619  HISTORY     - 1968     MARK NOT FOUND   MDSRC
 HU0619  HISTORY     - 19900123 GOOD             NGS
 HU0619  HISTORY     - 20040624 GOOD             GEOCAC
 HU0619  HISTORY     - 20180906 GOOD             ARCSHE
 HU0619
 HU0619                          STATION DESCRIPTION
 HU0619
 HU0619'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0619'1.7 MI NE FROM HEBRON.
 HU0619'THIS MARK IS 1.28 MILES NORTHEAST ALONG HIGHWAY 347 FROM THE
 HU0619'HEBRON SAVING BANK AT HEBRON, WICOMICO COUNTY, AND 0.4 MILE EAST
 HU0619'ALONG HIGHWAY 213, 25.7 FEET EAST OF THE CENTER LINE OF HIGHWAY
 HU0619'213, 5 FEET EAST OF POLE NUMBER 20 X, 97 FEET SOUTHEAST OF THE
 HU0619'CENTER LINE OF THE WYE JUNCTION OF A TAR PAVED ROAD RUNNING NORTH
 HU0619'FROM THE HIGHWAY, AT THE SPRING HILL AIRPORT, A STANDARD DISK SET
 HU0619'IN THE TOP OF A CONCRETE POST.
 HU0619
 HU0619                          STATION RECOVERY (1968)
 HU0619
 HU0619'RECOVERY NOTE BY MD STATE ROADS COMM 1968
 HU0619'MARK NOT FOUND.
 HU0619
 HU0619                          STATION RECOVERY (1990)
 HU0619
 HU0619'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0619'1.8 KM (1.12 MI) NORTHEASTERLY ALONG STATE HIGHWAY 347 FROM THE POST
 HU0619'OFFICE IN HEBRON, THENCE 0.7 KM (0.43 MI) EASTERLY ALONG MEMORY
 HU0619'GARDENS LANE, 26.6 M (87.27 FT) EAST OF THE EXTENDED CENTER OF SPRING
 HU0619'HILL LANE, 7.8 M (25.59 FT) NORTHEAST OF THE CENTERLINE OF THE LANE,
 HU0619'3.0 M (9.84 FT) SOUTHWEST OF A WITNESS POST AND FENCE, 2.0 M (6.56
 HU0619'FT) NORTH-NORTHEAST OF UTILITY POLE NUMBER 1279, LEVEL WITH THE LANE,
 HU0619'AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU0619
 HU0619                          STATION RECOVERY (2004)
 HU0619
 HU0619'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU0619'RECOVERED IN GOOD CONDITION.
 HU0619
 HU0619                          STATION RECOVERY (2018)
 HU0619
 HU0619'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 HU0619'IT IS 25.0 FT (7.6 M) EAST OF GUY POLE NUMBER 44970 95498, 4.0 FT (1.2
 HU0619'M) SOUTH OF A GUY WIRE AT THE SOUTH END OF A RUNWAY ON THE OUTSIDE OF
 HU0619'A HIGHWAY CURVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0716 ***********************************************************************
 HU0716  DESIGNATION -  H 58
 HU0716  PID         -  HU0716
 HU0716  STATE/COUNTY-  MD/WICOMICO
 HU0716  COUNTRY     -  US
 HU0716  USGS QUAD   -  WANGO (2016)
 HU0716
 HU0716                         *CURRENT SURVEY CONTROL
 HU0716  ______________________________________________________________________
 HU0716* NAD 83(1986) POSITION- 38 17 55.     (N) 075 29 59.     (W)   SCALED
 HU0716* NAVD 88 ORTHO HEIGHT -    15.286 (meters)       50.15  (feet) ADJUSTED
 HU0716  ______________________________________________________________________
 HU0716  GEOID HEIGHT    -        -35.992 (meters)                     GEOID18
 HU0716  DYNAMIC HEIGHT  -         15.277 (meters)       50.12  (feet) COMP
 HU0716  MODELED GRAVITY -    979,998.4   (mgal)                       NAVD 88
 HU0716
 HU0716  VERT ORDER      -  SECOND    CLASS 0
 HU0716
 HU0716.The horizontal coordinates were scaled from a map and have
 HU0716.an estimated accuracy of +/- 6 seconds.
 HU0716
 HU0716.The orthometric height was determined by differential leveling and
 HU0716.adjusted by the NATIONAL GEODETIC SURVEY
 HU0716.in June 1991.
 HU0716
 HU0716.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0716.GEOID18 height accuracy estimate available here.
 HU0716
 HU0716.Click photographs - Photos may exist for this station.
 HU0716
 HU0716.The dynamic height is computed by dividing the NAVD 88
 HU0716.geopotential number by the normal gravity value computed on the
 HU0716.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0716.degrees latitude (g = 980.6199 gals.).
 HU0716
 HU0716.The modeled gravity was interpolated from observed gravity values.
 HU0716
 HU0716;                    North         East    Units  Estimated Accuracy
 HU0716;SPC MD       -    71,230.      531,230.      MT  (+/- 180 meters Scaled)
 HU0716
 HU0716_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH563390(NAD 83)
 HU0716
 HU0716                          SUPERSEDED SURVEY CONTROL
 HU0716
 HU0716  NGVD 29 (11/26/84)   15.524  (m)           50.93   (f) ADJUSTED    2 0
 HU0716
 HU0716.Superseded values are not recommended for survey control.
 HU0716
 HU0716.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0716.See file dsdata.pdf to determine how the superseded data were derived.
 HU0716
 HU0716_MARKER: DB = BENCH MARK DISK
 HU0716_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0716_STAMPING: H 58 1942
 HU0716_MARK LOGO: CGS
 HU0716_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0716+STABILITY: SURFACE MOTION
 HU0716
 HU0716  HISTORY     - Date     Condition        Report By
 HU0716  HISTORY     - 1942     MONUMENTED       CGS
 HU0716  HISTORY     - 1962     GOOD             CGS
 HU0716  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0716
 HU0716                          STATION DESCRIPTION
 HU0716
 HU0716'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0716'5 MI W FROM WANGO.
 HU0716'1/4 MILE WEST ALONG A DIRT ROAD FROM THE METHODIST CHURCH AT
 HU0716'WANGO, THENCE 1.1 MILES SOUTHWEST ALONG A DIRT ROAD, THENCE 2.6
 HU0716'MILES NORTHWEST ALONG A DIRT ROAD, AND THENCE 1.1 MILES SOUTH
 HU0716'ALONG A DIRT ROAD, 19.8 FEET SOUTHEAST OF THE CENTERLINE OF THE
 HU0716'ROAD, 14 FEET SOUTH OF A 12-INCH PINE TREE, 11 FEET EAST OF A
 HU0716'14-INCH OAK TREE, AND ABOUT 1 FOOT HIGHER THAN THE ROAD.  A
 HU0716'STANDARD DISK, STAMPED H 58 1942 AND SET IN THE TOP OF A CONCRETE
 HU0716'POST.  NOTE-- THE 12 INCH PINE TREE IS GONE.  A STEEL WITNESS POST
 HU0716'WAS SET 1 FOOT NORTH OF MARK.
 HU0716
 HU0716                          STATION RECOVERY (1997)
 HU0716
 HU0716'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0716'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0481 ***********************************************************************
 HV0481  DESIGNATION -  H 59
 HV0481  PID         -  HV0481
 HV0481  STATE/COUNTY-  MD/DORCHESTER
 HV0481  COUNTRY     -  US
 HV0481  USGS QUAD   -  WINGATE (2016)
 HV0481
 HV0481                         *CURRENT SURVEY CONTROL
 HV0481  ______________________________________________________________________
 HV0481* NAD 83(1986) POSITION- 38 15 28.2    (N) 076 03 58.6    (W)   HD_HELD2
 HV0481* NAVD 88 ORTHO HEIGHT -     0.312 (meters)        1.02  (feet) ADJUSTED
 HV0481  ______________________________________________________________________
 HV0481  GEOID HEIGHT    -        -35.513 (meters)                     GEOID18
 HV0481  DYNAMIC HEIGHT  -          0.312 (meters)        1.02  (feet) COMP
 HV0481  MODELED GRAVITY -    979,994.8   (mgal)                       NAVD 88
 HV0481
 HV0481  VERT ORDER      -  SECOND    CLASS 0
 HV0481
 HV0481.The horizontal coordinates were established by autonomous hand held GPS
 HV0481.observations and have an estimated accuracy of +/- 10 meters.
 HV0481
 HV0481.The orthometric height was determined by differential leveling and
 HV0481.adjusted by the NATIONAL GEODETIC SURVEY
 HV0481.in June 1991.
 HV0481
 HV0481.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0481.GEOID18 height accuracy estimate available here.
 HV0481
 HV0481.Click photographs - Photos may exist for this station.
 HV0481
 HV0481.The dynamic height is computed by dividing the NAVD 88
 HV0481.geopotential number by the normal gravity value computed on the
 HV0481.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0481.degrees latitude (g = 980.6199 gals.).
 HV0481
 HV0481.The modeled gravity was interpolated from observed gravity values.
 HV0481
 HV0481;                    North         East    Units  Estimated Accuracy
 HV0481;SPC MD       -    66,040.      481,722.      MT  (+/- 10 meters HH2 GPS)
 HV0481
 HV0481_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0671134960(NAD 83)
 HV0481
 HV0481                          SUPERSEDED SURVEY CONTROL
 HV0481
 HV0481  NGVD 29 (11/26/84)    0.537  (m)            1.76   (f) ADJUSTED    2 0
 HV0481
 HV0481.Superseded values are not recommended for survey control.
 HV0481
 HV0481.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0481.See file dsdata.pdf to determine how the superseded data were derived.
 HV0481
 HV0481_MARKER: DB = BENCH MARK DISK
 HV0481_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0481_STAMPING: H 59 1942
 HV0481_MARK LOGO: CGS
 HV0481_PROJECTION: RECESSED 15 CENTIMETERS
 HV0481_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0481+STABILITY: SURFACE MOTION
 HV0481_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0481+SATELLITE: SATELLITE OBSERVATIONS - April 03, 2014
 HV0481
 HV0481  HISTORY     - Date     Condition        Report By
 HV0481  HISTORY     - 1942     MONUMENTED       CGS
 HV0481  HISTORY     - 20140403 GOOD             ARCSHE
 HV0481
 HV0481                          STATION DESCRIPTION
 HV0481
 HV0481'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0481'4.8 MI SE FROM WINGATE.
 HV0481'THIS MARK IS ABOUT 4.8 MILES SOUTH AND SOUTHEAST ALONG A GRAVEL
 HV0481'ROAD FROM THE COUNTY TRUST COMPANY BUILDING AT WINGATE, DORCHESTER
 HV0481'COUNTY, AT A SMALL 2-STORY YELLOW HOUSE, 41.6 FEET NORTHEAST OF
 HV0481'THE NORTHEAST CORNER OF THE HOUSE, 31.6 FEET WEST OF THE CENTER
 HV0481'LINE OF THE ROAD, AT THE NORTHEAST CORNER OF THE YARD NEAR A
 HV0481'FENCE CORNER, 1 1/2 FEET LOWER THAN THE LEVEL OF THE ROAD, AND
 HV0481'IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST.
 HV0481
 HV0481                          STATION RECOVERY (2014)
 HV0481
 HV0481'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV0481'THE MARK IS LOCATED ABOUT 5.3 MI (8.5 KM) SOUTHEAST OF CRAPO, 2.9 MI
 HV0481'(4.7 KM) SOUTH OF TODDVILLE AND 1.9 MI (3.1 KM) SOUTH-SOUTHEAST OF
 HV0481'WINGATE.
 HV0481'
 HV0481'TO REACH FROM THE JUNCTION OF MD 335 AND MD 336 IN GOLDEN HILL, GO
 HV0481'SOUTHEAST ON MD 336 FOR 13.61 MI (21.9 KM) TO A SIDE ROAD ON THE LEFT.
 HV0481'TURN LEFT AND GO SOUTHEAST ON CROCHERON ROAD FOR 0.73 MI (1.2 KM) TO
 HV0481'THE MARK ON THE RIGHT.
 HV0481'
 HV0481'IT IS 49.2 FT (15.0 M) WEST-SOUTHWEST OF TELEPHONE POLE NUMBER 342,
 HV0481'42.0 FT (12.8 M) NORTHEAST OF THE NORTHEAST CORNER OF A TWO STORY
 HV0481'WHITE HOUSE, 30.5 FT (9.3 M) WEST OF THE CENTERLINE OF THE ROAD, 9.3
 HV0481'FT (2.8 M) WEST OF POWER LINE POLE NUMBER 512/279, 0.8 FT (24 CM) EAST
 HV0481'OF OF A FIBERGLASS WITNESS POST AND SET IN THE TOP OF A 10-IN (25 CM)
 HV0481'ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0483 ***********************************************************************
 HU0483  DESIGNATION -  H 6
 HU0483  PID         -  HU0483
 HU0483  STATE/COUNTY-  MD/SOMERSET
 HU0483  COUNTRY     -  US
 HU0483  USGS QUAD   -  PRINCESS ANNE (2016)
 HU0483
 HU0483                         *CURRENT SURVEY CONTROL
 HU0483  ______________________________________________________________________
 HU0483* NAD 83(1986) POSITION- 38 12 14.0    (N) 075 41 26.8    (W)   HD_HELD2
 HU0483* NAVD 88 ORTHO HEIGHT -     4.911 (meters)       16.11  (feet) ADJUSTED
 HU0483  ______________________________________________________________________
 HU0483  GEOID HEIGHT    -        -36.003 (meters)                     GEOID18
 HU0483  DYNAMIC HEIGHT  -          4.908 (meters)       16.10  (feet) COMP
 HU0483  MODELED GRAVITY -    979,987.4   (mgal)                       NAVD 88
 HU0483
 HU0483  VERT ORDER      -  FIRST     CLASS II
 HU0483
 HU0483.The horizontal coordinates were established by autonomous hand held GPS
 HU0483.observations and have an estimated accuracy of +/- 10 meters.
 HU0483
 HU0483.The orthometric height was determined by differential leveling and
 HU0483.adjusted by the NATIONAL GEODETIC SURVEY
 HU0483.in June 1991.
 HU0483
 HU0483.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0483.GEOID18 height accuracy estimate available here.
 HU0483
 HU0483.Click photographs - Photos may exist for this station.
 HU0483
 HU0483.The dynamic height is computed by dividing the NAVD 88
 HU0483.geopotential number by the normal gravity value computed on the
 HU0483.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0483.degrees latitude (g = 980.6199 gals.).
 HU0483
 HU0483.The modeled gravity was interpolated from observed gravity values.
 HU0483
 HU0483;                    North         East    Units  Estimated Accuracy
 HU0483;SPC MD       -    60,457.      514,671.      MT  (+/- 10 meters HH2 GPS)
 HU0483
 HU0483_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3951928662(NAD 83)
 HU0483
 HU0483                          SUPERSEDED SURVEY CONTROL
 HU0483
 HU0483  NGVD 29 (11/26/84)    5.164  (m)           16.94   (f) ADJUSTED    1 2
 HU0483
 HU0483.Superseded values are not recommended for survey control.
 HU0483
 HU0483.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0483.See file dsdata.pdf to determine how the superseded data were derived.
 HU0483
 HU0483_MARKER: DB = BENCH MARK DISK
 HU0483_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0483_STAMPING: H 6 1935
 HU0483_MARK LOGO: CGS
 HU0483_PROJECTION: FLUSH
 HU0483_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0483+STABILITY: SURFACE MOTION
 HU0483_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0483+SATELLITE: SATELLITE OBSERVATIONS - November 06, 2019
 HU0483
 HU0483  HISTORY     - Date     Condition        Report By
 HU0483  HISTORY     - 1935     MONUMENTED       CGS
 HU0483  HISTORY     - 1963     MARK NOT FOUND   CGS
 HU0483  HISTORY     - 20191106 SEE DESCRIPTION  ARCSHE
 HU0483
 HU0483                          STATION DESCRIPTION
 HU0483
 HU0483'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0483'AT PRINCESS ANNE.
 HU0483'AT PRINCESS ANNE, SOMERSET COUNTY, SOUTH OF THE SOUTH END OF THE
 HU0483'PENNSYLVANIA RAILROAD STATION, 400 FEET NORTH OF A PAVED ROAD
 HU0483'CROSSING, 35 FEET WEST OF THE CENTERLINE OF THE SOUTH-BOUND TRACK,
 HU0483'30 FEET SOUTHEAST OF THE CENTERLINE OF A PAVED STREET LEADING TO
 HU0483'THE STATION AND PARALLELS THE TRACKS, AND 6 FEET SOUTH OF A POLE,
 HU0483'AND IN LINE WITH A ROW OF POLES.  A STANDARD DISK, STAMPED H 6 1935
 HU0483'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH ABOVE
 HU0483'GROUND.
 HU0483
 HU0483                          STATION RECOVERY (2019)
 HU0483
 HU0483'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2019 (MRA)
 HU0483'THE EDGES OF THE DISK HAVE BEEN BENT DOWN, BUT THE ELEVATION SHOULD
 HU0483'STILL BE GOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0652 ***********************************************************************
 HU0652  DESIGNATION -  H 60
 HU0652  PID         -  HU0652
 HU0652  STATE/COUNTY-  MD/DORCHESTER
 HU0652  COUNTRY     -  US
 HU0652  USGS QUAD   -  CHICAMACOMICO RIVER (2016)
 HU0652
 HU0652                         *CURRENT SURVEY CONTROL
 HU0652  ______________________________________________________________________
 HU0652* NAD 83(1986) POSITION- 38 23 26.     (N) 075 52 50.     (W)   SCALED
 HU0652* NAVD 88 ORTHO HEIGHT -     0.611 (meters)        2.00  (feet) ADJUSTED
 HU0652  ______________________________________________________________________
 HU0652  GEOID HEIGHT    -        -35.549 (meters)                     GEOID18
 HU0652  DYNAMIC HEIGHT  -          0.611 (meters)        2.00  (feet) COMP
 HU0652  MODELED GRAVITY -    980,008.0   (mgal)                       NAVD 88
 HU0652
 HU0652  VERT ORDER      -  SECOND    CLASS 0
 HU0652
 HU0652.The horizontal coordinates were scaled from a map and have
 HU0652.an estimated accuracy of +/- 6 seconds.
 HU0652
 HU0652.The orthometric height was determined by differential leveling and
 HU0652.adjusted by the NATIONAL GEODETIC SURVEY
 HU0652.in June 1991.
 HU0652
 HU0652.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0652.GEOID18 height accuracy estimate available here.
 HU0652
 HU0652.Click photographs - Photos may exist for this station.
 HU0652
 HU0652.The dynamic height is computed by dividing the NAVD 88
 HU0652.geopotential number by the normal gravity value computed on the
 HU0652.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0652.degrees latitude (g = 980.6199 gals.).
 HU0652
 HU0652.The modeled gravity was interpolated from observed gravity values.
 HU0652
 HU0652;                    North         East    Units  Estimated Accuracy
 HU0652;SPC MD       -    80,950.      497,800.      MT  (+/- 180 meters Scaled)
 HU0652
 HU0652_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH231495(NAD 83)
 HU0652
 HU0652                          SUPERSEDED SURVEY CONTROL
 HU0652
 HU0652  NGVD 29 (11/26/84)    0.850  (m)            2.79   (f) ADJUSTED    2 0
 HU0652
 HU0652.Superseded values are not recommended for survey control.
 HU0652
 HU0652.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0652.See file dsdata.pdf to determine how the superseded data were derived.
 HU0652
 HU0652_MARKER: DB = BENCH MARK DISK
 HU0652_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0652_STAMPING: H 60 1942
 HU0652_MARK LOGO: CGS
 HU0652_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0652+STABILITY: SURFACE MOTION
 HU0652
 HU0652  HISTORY     - Date     Condition        Report By
 HU0652  HISTORY     - 1942     MONUMENTED       CGS
 HU0652  HISTORY     - 1964     MARK NOT FOUND   CGS
 HU0652
 HU0652                          STATION DESCRIPTION
 HU0652
 HU0652'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0652'8 MI S FROM VIENNA.
 HU0652'THIS MARK IS ALONG A TAR AND GRAVEL ROAD, ABOUT 8 MILES SOUTH OF
 HU0652'THE HIGH SCHOOL AT VIENNA, DORCHESTER COUNTY, AT AN ABANDONED
 HU0652'FARMHOUSE, 21 FEET EAST OF THE CENTER LINE OF THE ROAD, 45.5 FEET
 HU0652'WEST OF THE SOUTHWEST CORNER OF THE HOUSE, NEAR 3 SMALL TREES,
 HU0652'AND IS A STANDARD DISK SET IN THE TOP OF A CONCRETE POST
 HU0652'PROJECTING ABOUT 5 INCHES ABOVE THE GROUND.
 HU0652
 HU0652                          STATION RECOVERY (1964)
 HU0652
 HU0652'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HU0652'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0727 ***********************************************************************
 HU0727  DESIGNATION -  H 61
 HU0727  PID         -  HU0727
 HU0727  STATE/COUNTY-  MD/WORCESTER
 HU0727  COUNTRY     -  US
 HU0727  USGS QUAD   -  DIVIDING CREEK (2016)
 HU0727
 HU0727                         *CURRENT SURVEY CONTROL
 HU0727  ______________________________________________________________________
 HU0727* NAD 83(1986) POSITION- 38 10 54.     (N) 075 31 39.     (W)   SCALED
 HU0727* NAVD 88 ORTHO HEIGHT -     9.933 (meters)       32.59  (feet) ADJUSTED
 HU0727  ______________________________________________________________________
 HU0727  GEOID HEIGHT    -        -36.158 (meters)                     GEOID18
 HU0727  DYNAMIC HEIGHT  -          9.926 (meters)       32.57  (feet) COMP
 HU0727  MODELED GRAVITY -    979,985.3   (mgal)                       NAVD 88
 HU0727
 HU0727  VERT ORDER      -  SECOND    CLASS 0
 HU0727
 HU0727.The horizontal coordinates were scaled from a map and have
 HU0727.an estimated accuracy of +/- 6 seconds.
 HU0727
 HU0727.The orthometric height was determined by differential leveling and
 HU0727.adjusted by the NATIONAL GEODETIC SURVEY
 HU0727.in June 1991.
 HU0727
 HU0727.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0727.GEOID18 height accuracy estimate available here.
 HU0727
 HU0727.Click photographs - Photos may exist for this station.
 HU0727
 HU0727.The dynamic height is computed by dividing the NAVD 88
 HU0727.geopotential number by the normal gravity value computed on the
 HU0727.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0727.degrees latitude (g = 980.6199 gals.).
 HU0727
 HU0727.The modeled gravity was interpolated from observed gravity values.
 HU0727
 HU0727;                    North         East    Units  Estimated Accuracy
 HU0727;SPC MD       -    58,210.      529,010.      MT  (+/- 180 meters Scaled)
 HU0727
 HU0727_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH538261(NAD 83)
 HU0727
 HU0727                          SUPERSEDED SURVEY CONTROL
 HU0727
 HU0727  NGVD 29 (11/26/84)   10.179  (m)           33.40   (f) ADJUSTED    2 0
 HU0727
 HU0727.Superseded values are not recommended for survey control.
 HU0727
 HU0727.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0727.See file dsdata.pdf to determine how the superseded data were derived.
 HU0727
 HU0727_MARKER: DB = BENCH MARK DISK
 HU0727_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0727_STAMPING: H 61 1942
 HU0727_MARK LOGO: CGS
 HU0727_PROJECTION: PROJECTING 13 CENTIMETERS
 HU0727_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0727+STABILITY: SURFACE MOTION
 HU0727
 HU0727  HISTORY     - Date     Condition        Report By
 HU0727  HISTORY     - 1942     MONUMENTED       CGS
 HU0727  HISTORY     - 1962     GOOD             CGS
 HU0727
 HU0727                          STATION DESCRIPTION
 HU0727
 HU0727'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0727'8.7 MI W FROM SNOW HILL.
 HU0727'2.8 MILES NORTHWEST ALONG STATE HIGHWAY 12 FROM THE DRAWBRIDGE
 HU0727'OVER POCOMOKE RIVER AT SNOW HILL, WORCESTER COUNTY, THENCE ABOUT
 HU0727'5.9 MILES WEST ALONG A DIRT ROAD, ABOUT 0.5 MILE EAST OF THE ROAD
 HU0727'JUNCTION AT WHITESBURG, NEAR A DIM FARM ROAD LEADING SOUTH INTO A
 HU0727'WOODS, 33 FEET SOUTH OF THE CENTER LINE OF THE MAIN ROAD, 22 FEET
 HU0727'WEST OF THE CENTER LINE OF THE FARM ROAD, AND 1 FOOT NORTH OF A
 HU0727'WOODEN WITNESS POST.  A STANDARD DISK, STAMPED H 61 1942 AND SET
 HU0727'IN THE TOP OF A CONCRETE POST PROJECTING ABOUT 5 INCHES ABOVE
 HU0727'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7938 ***********************************************************************
 HV7938  DESIGNATION -  H 62 RESET
 HV7938  PID         -  HV7938
 HV7938  STATE/COUNTY-  MD/TALBOT
 HV7938  COUNTRY     -  US
 HV7938  USGS QUAD   -  TRAPPE (2016)
 HV7938
 HV7938                         *CURRENT SURVEY CONTROL
 HV7938  ______________________________________________________________________
 HV7938* NAD 83(1986) POSITION- 38 41 19.0    (N) 076 06 47.9    (W)   HD_HELD2
 HV7938* NAVD 88 ORTHO HEIGHT -     3.107 (meters)       10.19  (feet) ADJUSTED
 HV7938  ______________________________________________________________________
 HV7938  GEOID HEIGHT    -        -34.754 (meters)                     GEOID18
 HV7938  DYNAMIC HEIGHT  -          3.105 (meters)       10.19  (feet) COMP
 HV7938  MODELED GRAVITY -    980,029.0   (mgal)                       NAVD 88
 HV7938
 HV7938  VERT ORDER      -  SECOND    CLASS I
 HV7938
 HV7938.The horizontal coordinates were established by autonomous hand held GPS
 HV7938.observations and have an estimated accuracy of +/- 10 meters.
 HV7938
 HV7938.The orthometric height was determined by differential leveling and
 HV7938.adjusted by the NATIONAL GEODETIC SURVEY
 HV7938.in September 2004.
 HV7938
 HV7938.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7938.GEOID18 height accuracy estimate available here.
 HV7938
 HV7938.Click photographs - Photos may exist for this station.
 HV7938
 HV7938.The dynamic height is computed by dividing the NAVD 88
 HV7938.geopotential number by the normal gravity value computed on the
 HV7938.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7938.degrees latitude (g = 980.6199 gals.).
 HV7938
 HV7938.The modeled gravity was interpolated from observed gravity values.
 HV7938
 HV7938;                    North         East    Units  Estimated Accuracy
 HV7938;SPC MD       -   113,814.      477,142.      MT  (+/- 10 meters HH2 GPS)
 HV7938
 HV7938_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0317482810(NAD 83)
 HV7938
 HV7938                          SUPERSEDED SURVEY CONTROL
 HV7938
 HV7938  NGVD 29 (??/??/??)    3.35   (m)           11.0    (f) RESET       3  
 HV7938
 HV7938.Superseded values are not recommended for survey control.
 HV7938
 HV7938.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7938.See file dsdata.pdf to determine how the superseded data were derived.
 HV7938
 HV7938_MARKER: DV = VERTICAL CONTROL DISK
 HV7938_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7938_STAMPING: H 62 RESET 1975
 HV7938_MARK LOGO: NGS
 HV7938_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV7938_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7938+STABILITY: SURFACE MOTION
 HV7938_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7938+SATELLITE: SATELLITE OBSERVATIONS - September 13, 2000
 HV7938
 HV7938  HISTORY     - Date     Condition        Report By
 HV7938  HISTORY     - 1975     MONUMENTED       NGS
 HV7938  HISTORY     - 20000913 GOOD             MDSHA
 HV7938
 HV7938                          STATION DESCRIPTION
 HV7938
 HV7938'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7938'1/2 MI SW FROM TRAPPE STATION.
 HV7938'0.4 MI SW ALONG STATE HIGHWAY 333 FROM THE INTERSECTION OF HAMBLETON-
 HV7938'OXFORD ROAD AND STATE HIGHWAY 333 IN TRAPPE STATION.  A STANDARD
 HV7938'DISK SET IN THE TOP OF A 8 INCH ROUND CONCRETE MONUMENT WHICH IS
 HV7938'FLUSH WITH THE SURFACE, 87 FEET EAST OF THE CENTER OF A FARM ROAD,
 HV7938'39 FEET EAST OF THE CENTER OF A HEADWALL, 37.3 FEET NORTH OF THE
 HV7938'CENTER OF STATE HIGHWAY 333, 9.5 FEET NE OF A POWERLINE POLE NUMBERED
 HV7938'100, 1 FOOT SOUTH OF A WOOD FENCE AND 1 FOOT SOUTH OF A WITNESS
 HV7938'POST.
 HV7938
 HV7938                          STATION RECOVERY (2000)
 HV7938
 HV7938'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 HV7938'THE MARK IS LOCATED ABOUT 3.6 MI (5.79 KM) NORTHWEST OF TRAPPE, 3.2 MI
 HV7938'(5.15 KM) EAST OF OXFORD AND 0.5 MI (0.8 KM) SOUTHWEST OF TRAPPE
 HV7938'STATION.  TO REACH THE MARK FROM THE POST OFFICE IN OXFORD, GO
 HV7938'SOUTHWEST ALONG WILSON STREET FOR 0.05 MILES (0.08 KM) TO MORRIS
 HV7938'STREET (STATE HIGHWAY 333) .  TURN LEFT AND GO SOUTHEAST AND EAST
 HV7938'ALONG STATE HIGHWAY 333 FOR 3.55 MILES (5.71 KM) TO THE MARK ON THE
 HV7938'LEFT.  IT IS 37.0 FEET (11.3 M) NORTH OF THE CENTER LINE OF THE
 HV7938'HIGHWAY, 11.5 FEET (3.5 M) NORTHEAST OF POWER POLE NUMBER 32267-05046,
 HV7938'40.1 FEET (12.2 M) NORTHEAST OF THE NORTH END OF A 36 INCH (91 CM)
 HV7938'METAL PIPE RUNNING UNDER THE HIGHWAY, 86.0 FEET (26.2 M) EAST OF THE
 HV7938'CENTER OF ANDERTON LANE LEADING TO HOUSE NUMBER 27792, 77.0 FEET (23.5
 HV7938'M) WEST-NORTHWEST OF THE EAST END OF A METAL GUARD RAIL AND 1.0 FEET
 HV7938'(0.3 M) SOUTHEAST OF A WOODEN POST.  IT IS A NGS DISK SET IN THE TOP
 HV7938'OF A ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND AND 1 FOOT (0.3 M)
 HV7938'LOWER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0257 ***********************************************************************
 HV0257  DESIGNATION -  H 63
 HV0257  PID         -  HV0257
 HV0257  STATE/COUNTY-  MD/DORCHESTER
 HV0257  COUNTRY     -  US
 HV0257  USGS QUAD   -  HUDSON (2016)
 HV0257
 HV0257                         *CURRENT SURVEY CONTROL
 HV0257  ______________________________________________________________________
 HV0257* NAD 83(1986) POSITION- 38 35 25.1    (N) 076 15 26.9    (W)   HD_HELD2
 HV0257* NAVD 88 ORTHO HEIGHT -     1.491 (meters)        4.89  (feet) ADJUSTED
 HV0257  ______________________________________________________________________
 HV0257  GEOID HEIGHT    -        -34.595 (meters)                     GEOID18
 HV0257  DYNAMIC HEIGHT  -          1.490 (meters)        4.89  (feet) COMP
 HV0257  MODELED GRAVITY -    980,027.3   (mgal)                       NAVD 88
 HV0257
 HV0257  VERT ORDER      -  SECOND    CLASS 0
 HV0257
 HV0257.The horizontal coordinates were established by autonomous hand held GPS
 HV0257.observations and have an estimated accuracy of +/- 10 meters.
 HV0257
 HV0257.The orthometric height was determined by differential leveling and
 HV0257.adjusted by the NATIONAL GEODETIC SURVEY
 HV0257.in June 1991.
 HV0257
 HV0257.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0257.GEOID18 height accuracy estimate available here.
 HV0257
 HV0257.Click photographs - Photos may exist for this station.
 HV0257
 HV0257.The dynamic height is computed by dividing the NAVD 88
 HV0257.geopotential number by the normal gravity value computed on the
 HV0257.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0257.degrees latitude (g = 980.6199 gals.).
 HV0257
 HV0257.The modeled gravity was interpolated from observed gravity values.
 HV0257
 HV0257;                    North         East    Units  Estimated Accuracy
 HV0257;SPC MD       -   102,791.      464,689.      MT  (+/- 10 meters HH2 GPS)
 HV0257
 HV0257_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9048672063(NAD 83)
 HV0257
 HV0257                          SUPERSEDED SURVEY CONTROL
 HV0257
 HV0257  NGVD 29 (02/24/95)    1.723  (m)            5.65   (f) ADJUSTED    2 0
 HV0257  NGVD 29 (11/26/84)    1.729  (m)            5.67   (f) SUPERSEDED  2 0
 HV0257
 HV0257.Superseded values are not recommended for survey control.
 HV0257
 HV0257.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0257.See file dsdata.pdf to determine how the superseded data were derived.
 HV0257
 HV0257_MARKER: DB = BENCH MARK DISK
 HV0257_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0257_STAMPING: H 63 1942
 HV0257_MARK LOGO: CGS
 HV0257_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0257+STABILITY: SURFACE MOTION
 HV0257_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0257+SATELLITE: SATELLITE OBSERVATIONS - June 20, 2009
 HV0257
 HV0257  HISTORY     - Date     Condition        Report By
 HV0257  HISTORY     - 1942     MONUMENTED       CGS
 HV0257  HISTORY     - 20090620 GOOD             JARICE
 HV0257
 HV0257                          STATION DESCRIPTION
 HV0257
 HV0257'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0257'11 MI NW FROM CAMBRIDGE.
 HV0257'ALONG STATE HIGHWAY 343, 36 FEET WEST OF A BLAZED PINE TREE, 61 FEET
 HV0257'NORTHEAST OF A POWER POLE, 42 FEET NORTH OF THE CENTER OF THE
 HV0257'HIGHWAY, 10 FEET EAST OF A BLAZED OAK TREE, AND SET IN THE TOP OF
 HV0257'A CONCRETE POST.  A STANDARD DISK.
 HV0257
 HV0257                          STATION RECOVERY (2009)
 HV0257
 HV0257'RECOVERY NOTE BY J A RICE INC 2009 (MRA)
 HV0257'THE MARK IS LOCATED ABOUT 8.3 MI (13.4 KM) NORTHWEST OF CHURCH CREEK,
 HV0257'8.1 MI (13.0 KM) SOUTHWEST OF OXFORD AND IN THE TOWN OF HUDSON, MD.
 HV0257'
 HV0257'TO REACH FROM THE SOUTH END OF THE U.S. HIGHWAY 50 BRIDGE OVER THE
 HV0257'CHOPTANK RIVER AT CAMBRIDGE, GO EAST ON HIGHWAY 50 FOR 0.8 MI (1.3 KM)
 HV0257'TO A RAMP ON THE RIGHT.  TURN RIGHT AND GO WEST ON MD 343 (HUDSON
 HV0257'ROAD) FOR 11.8 MI (19.0 KM) TO THE MARK ON THE RIGHT IN A WOODED AREA.
 HV0257'
 HV0257'IT IS 112.3 FT (34.2 M) WEST OF A TELEPHONE POLE NUMBERED 360, 69.9 FT
 HV0257'(21.3 M) NORTH OF A TELEPHONE POLE NUMBERED 361, 40.8 FT (12.4 M)
 HV0257'NORTHWEST OF THE CENTERLINE OF THE ROAD, 9.5 FT (2.9 M) NORTHEAST OF A
 HV0257'24-IN (61 CM) OAK TREE, 0.9 FT (0.3 M) NORTHWEST OF A METAL WITNESS
 HV0257'POST AND SIGN AND SET IN THE TOP OF A 8-IN (20 CM) SQUARE CONCRETE
 HV0257'POST ABOUT LEVEL WITH THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0904 ***********************************************************************
 HU0904  DESIGNATION -  H 66
 HU0904  PID         -  HU0904
 HU0904  STATE/COUNTY-  MD/DORCHESTER
 HU0904  COUNTRY     -  US
 HU0904  USGS QUAD   -  SEAFORD WEST (2016)
 HU0904
 HU0904                         *CURRENT SURVEY CONTROL
 HU0904  ______________________________________________________________________
 HU0904* NAD 83(1986) POSITION- 38 40 04.     (N) 075 44 34.     (W)   SCALED
 HU0904* NAVD 88 ORTHO HEIGHT -    11.068 (meters)       36.31  (feet) ADJUSTED
 HU0904  ______________________________________________________________________
 HU0904  GEOID HEIGHT    -        -35.407 (meters)                     GEOID18
 HU0904  DYNAMIC HEIGHT  -         11.061 (meters)       36.29  (feet) COMP
 HU0904  MODELED GRAVITY -    980,019.3   (mgal)                       NAVD 88
 HU0904
 HU0904  VERT ORDER      -  SECOND    CLASS 0
 HU0904
 HU0904.The horizontal coordinates were scaled from a map and have
 HU0904.an estimated accuracy of +/- 6 seconds.
 HU0904
 HU0904.The orthometric height was determined by differential leveling and
 HU0904.adjusted by the NATIONAL GEODETIC SURVEY
 HU0904.in June 1991.
 HU0904
 HU0904.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0904.GEOID18 height accuracy estimate available here.
 HU0904
 HU0904.Click photographs - Photos may exist for this station.
 HU0904
 HU0904.The dynamic height is computed by dividing the NAVD 88
 HU0904.geopotential number by the normal gravity value computed on the
 HU0904.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0904.degrees latitude (g = 980.6199 gals.).
 HU0904
 HU0904.The modeled gravity was interpolated from observed gravity values.
 HU0904
 HU0904;                    North         East    Units  Estimated Accuracy
 HU0904;SPC MD       -   111,880.      509,410.      MT  (+/- 180 meters Scaled)
 HU0904
 HU0904_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH353801(NAD 83)
 HU0904
 HU0904                          SUPERSEDED SURVEY CONTROL
 HU0904
 HU0904  NGVD 29 (11/26/84)   11.311  (m)           37.11   (f) ADJUSTED    2 0
 HU0904
 HU0904.Superseded values are not recommended for survey control.
 HU0904
 HU0904.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0904.See file dsdata.pdf to determine how the superseded data were derived.
 HU0904
 HU0904_MARKER: DB = BENCH MARK DISK
 HU0904_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0904_STAMPING: H 66 1942
 HU0904_MARK LOGO: CGS
 HU0904_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0904+STABILITY: SURFACE MOTION
 HU0904
 HU0904  HISTORY     - Date     Condition        Report By
 HU0904  HISTORY     - 1942     MONUMENTED       CGS
 HU0904  HISTORY     - 1965     GOOD             CGS
 HU0904  HISTORY     - 20130105 MARK NOT FOUND   DELCOS
 HU0904
 HU0904                          STATION DESCRIPTION
 HU0904
 HU0904'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0904'3 MI NW FROM RELIANCE.
 HU0904'3.05 MILES NORTHWEST ALONG ROAD NUMBER 577 FROM THE T JUNCTION OF
 HU0904'HIGHWAY 20 AND ROAD 577 AT RELIANCE, DORCHESTER COUNTY, 19.0 FEET
 HU0904'SOUTHWEST OF THE CENTER LINE OF THE ROAD, 1.0 FEET NORTHWEST OF
 HU0904'THE NORTHWEST END OF A WIRE FENCE WHICH RUNS PARALLEL WITH THE
 HU0904'ROAD, SET IN THE EAST CORNER OF A CULTIVATED FIELD, ABOUT LEVEL
 HU0904'WITH THE ROAD, NEAR A STANDARD REFERENCE POST.  NOTE-- THE WIRE
 HU0904'FENCE IS GONE AND MARK IS NOW 78 FEET SOUTHEAST OF UTILITY POLE
 HU0904'NUMBER 228.
 HU0904
 HU0904                          STATION RECOVERY (1965)
 HU0904
 HU0904'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0904'RECOVERED IN GOOD CONDITION.
 HU0904
 HU0904                          STATION RECOVERY (2013)
 HU0904
 HU0904'RECOVERY NOTE BY DELAWARE COASTAL PROGRAM 2013
 HU0904'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0893 ***********************************************************************
 HU0893  DESIGNATION -  H 67
 HU0893  PID         -  HU0893
 HU0893  STATE/COUNTY-  MD/CAROLINE
 HU0893  COUNTRY     -  US
 HU0893  USGS QUAD   -  HOBBS (2017)
 HU0893
 HU0893                         *CURRENT SURVEY CONTROL
 HU0893  ______________________________________________________________________
 HU0893* NAD 83(1986) POSITION- 38 48 58.     (N) 075 51 20.     (W)   SCALED
 HU0893* NAVD 88 ORTHO HEIGHT -    12.045 (meters)       39.52  (feet) ADJUSTED
 HU0893  ______________________________________________________________________
 HU0893  GEOID HEIGHT    -        -34.963 (meters)                     GEOID18
 HU0893  DYNAMIC HEIGHT  -         12.038 (meters)       39.49  (feet) COMP
 HU0893  MODELED GRAVITY -    980,034.4   (mgal)                       NAVD 88
 HU0893
 HU0893  VERT ORDER      -  SECOND    CLASS 0
 HU0893
 HU0893.The horizontal coordinates were scaled from a map and have
 HU0893.an estimated accuracy of +/- 6 seconds.
 HU0893
 HU0893.The orthometric height was determined by differential leveling and
 HU0893.adjusted by the NATIONAL GEODETIC SURVEY
 HU0893.in June 1991.
 HU0893
 HU0893.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0893.GEOID18 height accuracy estimate available here.
 HU0893
 HU0893.Click photographs - Photos may exist for this station.
 HU0893
 HU0893.The dynamic height is computed by dividing the NAVD 88
 HU0893.geopotential number by the normal gravity value computed on the
 HU0893.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0893.degrees latitude (g = 980.6199 gals.).
 HU0893
 HU0893.The modeled gravity was interpolated from observed gravity values.
 HU0893
 HU0893;                    North         East    Units  Estimated Accuracy
 HU0893;SPC MD       -   128,220.      499,390.      MT  (+/- 180 meters Scaled)
 HU0893
 HU0893_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH257967(NAD 83)
 HU0893
 HU0893                          SUPERSEDED SURVEY CONTROL
 HU0893
 HU0893  NGVD 29 (11/26/84)   12.286  (m)           40.31   (f) ADJUSTED    2 0
 HU0893
 HU0893.Superseded values are not recommended for survey control.
 HU0893
 HU0893.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0893.See file dsdata.pdf to determine how the superseded data were derived.
 HU0893
 HU0893_MARKER: DB = BENCH MARK DISK
 HU0893_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0893_STAMPING: H 67 1942
 HU0893_MARK LOGO: CGS
 HU0893_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0893+STABILITY: SURFACE MOTION
 HU0893
 HU0893  HISTORY     - Date     Condition        Report By
 HU0893  HISTORY     - 1942     MONUMENTED       CGS
 HU0893  HISTORY     - 1965     MARK NOT FOUND   CGS
 HU0893
 HU0893                          STATION DESCRIPTION
 HU0893
 HU0893'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0893'AT BUREAU.
 HU0893'AT BUREAU, CAROLINE COUNTY, AT THE T JUNCTION OF HIGHWAY 16 AND
 HU0893'313, 30.0 FEET NORTHWEST OF THE CENTER LINE OF HIGHWAY 16.  25.7
 HU0893'FEET SOUTHWEST OF THE CENTER LINE OF A DIRT ROAD WHICH RUNS
 HU0893'NORTHWEST TO TWO JOHNS, 59.1 FEET WEST OF THE CENTER OF THE
 HU0893'JUNCTION, ABOUT 1.0 FEET HIGHER THAN THE HIGHWAY, NEAR A STANDARD
 HU0893'REFERENCE POST.  NOTE-- IT APPEARS THAT HIGHWAY IMPROVEMENTS
 HU0893'PROBABLY DESTROYED MARK.
 HU0893
 HU0893                          STATION RECOVERY (1965)
 HU0893
 HU0893'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 HU0893'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0825 ***********************************************************************
 HU0825  DESIGNATION -  H 68
 HU0825  PID         -  HU0825
 HU0825  STATE/COUNTY-  MD/CAROLINE
 HU0825  COUNTRY     -  US
 HU0825  USGS QUAD   -  RIDGELY (2017)
 HU0825
 HU0825                         *CURRENT SURVEY CONTROL
 HU0825  ______________________________________________________________________
 HU0825* NAD 83(1986) POSITION- 38 59 02.     (N) 075 52 32.     (W)   SCALED
 HU0825* NAVD 88 ORTHO HEIGHT -    18.741 (meters)       61.49  (feet) ADJUSTED
 HU0825  ______________________________________________________________________
 HU0825  GEOID HEIGHT    -        -34.456 (meters)                     GEOID18
 HU0825  DYNAMIC HEIGHT  -         18.731 (meters)       61.45  (feet) COMP
 HU0825  MODELED GRAVITY -    980,061.3   (mgal)                       NAVD 88
 HU0825
 HU0825  VERT ORDER      -  SECOND    CLASS 0
 HU0825
 HU0825.The horizontal coordinates were scaled from a map and have
 HU0825.an estimated accuracy of +/- 6 seconds.
 HU0825
 HU0825.The orthometric height was determined by differential leveling and
 HU0825.adjusted by the NATIONAL GEODETIC SURVEY
 HU0825.in June 1991.
 HU0825
 HU0825.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0825.GEOID18 height accuracy estimate available here.
 HU0825
 HU0825.Click photographs - Photos may exist for this station.
 HU0825
 HU0825.The dynamic height is computed by dividing the NAVD 88
 HU0825.geopotential number by the normal gravity value computed on the
 HU0825.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0825.degrees latitude (g = 980.6199 gals.).
 HU0825
 HU0825.The modeled gravity was interpolated from observed gravity values.
 HU0825
 HU0825;                    North         East    Units  Estimated Accuracy
 HU0825;SPC MD       -   146,820.      497,420.      MT  (+/- 180 meters Scaled)
 HU0825
 HU0825_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ241153(NAD 83)
 HU0825
 HU0825                          SUPERSEDED SURVEY CONTROL
 HU0825
 HU0825  NGVD 29 (11/26/84)   18.977  (m)           62.26   (f) ADJUSTED    2 0
 HU0825
 HU0825.Superseded values are not recommended for survey control.
 HU0825
 HU0825.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0825.See file dsdata.pdf to determine how the superseded data were derived.
 HU0825
 HU0825_MARKER: DB = BENCH MARK DISK
 HU0825_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0825_STAMPING: H 68 1942
 HU0825_MARK LOGO: CGS
 HU0825_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0825+STABILITY: SURFACE MOTION
 HU0825
 HU0825  HISTORY     - Date     Condition        Report By
 HU0825  HISTORY     - 1942     MONUMENTED       CGS
 HU0825  HISTORY     - 20050319 MARK NOT FOUND   USPSQD
 HU0825
 HU0825                          STATION DESCRIPTION
 HU0825
 HU0825'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0825'0.1 MI E FROM RIDGLEY.
 HU0825'0.1 MILE EAST AND 3.0 MILES NORTH ALONG STATE HIGHWAY 312 FROM
 HU0825'THE PENNSYLVANIA RAILROAD STATION AT RIDGLEY, CAROLINE COUNTY,
 HU0825'24.2 FEET EAST OF THE CENTERLINE OF THE HIGHWAY, 9 FEET NORTHEAST
 HU0825'OF A TELEPHONE POLE, IN THE NORTHWEST CORNER OF A PASTURE, 2 FEET
 HU0825'WEST OF A WHITE WOODEN WITNESS POST, AND 2 FEET ABOVE THE
 HU0825'HIGHWAY.  A STANDARD DISK, STAMPED H 68 1942 AND SET IN THE TOP
 HU0825'OF A CONCRETE POST.
 HU0825
 HU0825                          STATION RECOVERY (2005)
 HU0825
 HU0825'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HU0825'SEE HU0826 H68 RESET 1965.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0826 ***********************************************************************
 HU0826  DESIGNATION -  H 68 RESET
 HU0826  PID         -  HU0826
 HU0826  STATE/COUNTY-  MD/CAROLINE
 HU0826  COUNTRY     -  US
 HU0826  USGS QUAD   -  RIDGELY (2017)
 HU0826
 HU0826                         *CURRENT SURVEY CONTROL
 HU0826  ______________________________________________________________________
 HU0826* NAD 83(1986) POSITION- 38 59 02.     (N) 075 52 32.     (W)   SCALED
 HU0826* NAVD 88 ORTHO HEIGHT -    18.71  (+/-2cm)       61.4   (feet) VERTCON3
 HU0826  ______________________________________________________________________
 HU0826  GEOID HEIGHT    -        -34.456 (meters)                     GEOID18
 HU0826  VERT ORDER      -  THIRD (See Below)
 HU0826
 HU0826.The horizontal coordinates were scaled from a map and have
 HU0826.an estimated accuracy of +/- 6 seconds.
 HU0826
 HU0826.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU0826.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU0826
 HU0826.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0826.GEOID18 height accuracy estimate available here.
 HU0826
 HU0826.The vertical order pertains to the NGVD 29 superseded value.
 HU0826
 HU0826.Click photographs - Photos may exist for this station.
 HU0826
 HU0826;                    North         East    Units  Estimated Accuracy
 HU0826;SPC MD       -   146,820.      497,420.      MT  (+/- 180 meters Scaled)
 HU0826
 HU0826_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ241153(NAD 83)
 HU0826
 HU0826                          SUPERSEDED SURVEY CONTROL
 HU0826
 HU0826  NGVD 29 (??/??/??)   18.95   (m)           62.2    (f) RESET       3  
 HU0826
 HU0826.Superseded values are not recommended for survey control.
 HU0826
 HU0826.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0826.See file dsdata.pdf to determine how the superseded data were derived.
 HU0826
 HU0826_MARKER: DB = BENCH MARK DISK
 HU0826_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0826_STAMPING: H 68 RESET 1965
 HU0826_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0826+STABILITY: SURFACE MOTION
 HU0826
 HU0826  HISTORY     - Date     Condition        Report By
 HU0826  HISTORY     - 1965     MONUMENTED       MDSRC
 HU0826  HISTORY     - 20050319 MARK NOT FOUND   USPSQD
 HU0826
 HU0826                          STATION DESCRIPTION
 HU0826
 HU0826'DESCRIBED BY MD STATE ROADS COMM 1965
 HU0826'3 MI N FROM RIDGLEY.
 HU0826'3.0 MILES NORTH OF THE PENNSYLVANIA RAILROAD CROSSING IN RIDGELY,
 HU0826'ALONG MARYLAND ROUTE 312 ON THE RIGHT.  63.0 FEET EAST OF THE
 HU0826'CENTERLINE OF MARYLAND RTE 312, 3.7 FEET EAST OF THE EAST POST OF
 HU0826'THE LYNCH OIL CO. SIGN AND 1.0 FEET WEST OF A METAL WITNESS POST.
 HU0826'SET IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES IN FIELD
 HU0826'DIVISION AND PROPERTY LINE BETWEEN TWO FARMS.
 HU0826
 HU0826                          STATION RECOVERY (2005)
 HU0826
 HU0826'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 HU0826'MEASUREMENTS REVEAL BROKEN CONCRETE PILLAR WITH NO DISK.  REFERENCED
 HU0826'OIL COMPANY SIGN DOES NOT EXIST.  WITNESS POST DOES NOT EXIST. FARM
 HU0826'PROPERTY LINE INDISTINCT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0361 ***********************************************************************
 JV0361  DESIGNATION -  H 69
 JV0361  PID         -  JV0361
 JV0361  STATE/COUNTY-  MD/KENT
 JV0361  COUNTRY     -  US
 JV0361  USGS QUAD   -  ROCK HALL (2016)
 JV0361
 JV0361                         *CURRENT SURVEY CONTROL
 JV0361  ______________________________________________________________________
 JV0361* NAD 83(1986) POSITION- 39 08 17.4    (N) 076 07 38.3    (W)   HD_HELD2
 JV0361* NAVD 88 ORTHO HEIGHT -     5.425 (meters)       17.80  (feet) ADJUSTED
 JV0361  ______________________________________________________________________
 JV0361  GEOID HEIGHT    -        -33.476 (meters)                     GEOID18
 JV0361  DYNAMIC HEIGHT  -          5.422 (meters)       17.79  (feet) COMP
 JV0361  MODELED GRAVITY -    980,104.2   (mgal)                       NAVD 88
 JV0361
 JV0361  VERT ORDER      -  FIRST     CLASS II
 JV0361
 JV0361.The horizontal coordinates were established by autonomous hand held GPS
 JV0361.observations and have an estimated accuracy of +/- 10 meters.
 JV0361
 JV0361.The orthometric height was determined by differential leveling and
 JV0361.adjusted by the NATIONAL GEODETIC SURVEY
 JV0361.in January 2023.
 JV0361
 JV0361.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0361.GEOID18 height accuracy estimate available here.
 JV0361
 JV0361.Click photographs - Photos may exist for this station.
 JV0361
 JV0361.The dynamic height is computed by dividing the NAVD 88
 JV0361.geopotential number by the normal gravity value computed on the
 JV0361.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0361.degrees latitude (g = 980.6199 gals.).
 JV0361
 JV0361.The modeled gravity was interpolated from observed gravity values.
 JV0361
 JV0361;                    North         East    Units  Estimated Accuracy
 JV0361;SPC MD       -   163,705.      475,447.      MT  (+/- 10 meters HH2 GPS)
 JV0361
 JV0361_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0257332714(NAD 83)
 JV0361
 JV0361                          SUPERSEDED SURVEY CONTROL
 JV0361
 JV0361  NAVD 88 (06/15/91)    5.424  (m)           17.80   (f) SUPERSEDED  1 2
 JV0361  NGVD 29 (11/26/84)    5.662  (m)           18.58   (f) ADJUSTED    1 2
 JV0361
 JV0361.Superseded values are not recommended for survey control.
 JV0361
 JV0361.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0361.See file dsdata.pdf to determine how the superseded data were derived.
 JV0361
 JV0361_MARKER: DB = BENCH MARK DISK
 JV0361_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0361_SP_SET: CULVERT HEADWALL
 JV0361_STAMPING: H 69 1942
 JV0361_MARK LOGO: CGS
 JV0361_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0361+STABILITY: SURFACE MOTION
 JV0361_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0361+SATELLITE: SATELLITE OBSERVATIONS - July 31, 2025
 JV0361
 JV0361  HISTORY     - Date     Condition        Report By
 JV0361  HISTORY     - 1942     MONUMENTED       CGS
 JV0361  HISTORY     - 1971     GOOD             NGS
 JV0361  HISTORY     - 19910412 GOOD             USPSQD
 JV0361  HISTORY     - 20060121 GOOD             USPSQD
 JV0361  HISTORY     - 20140117 GOOD             ARCSHE
 JV0361  HISTORY     - 20250731 GOOD             PROFLN
 JV0361
 JV0361                          STATION DESCRIPTION
 JV0361
 JV0361'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0361'ABOUT 2.1 MILES SOUTHWEST ALONG STATE HIGHWAY 289 FROM THE BOND
 JV0361'METHODIST CHAPEL AT POMONA, SET ON THE TOP AND 1.8 FEET SOUTHWEST
 JV0361'OF THE NORTHEAST END OF THE CONCRETE HEAD WALL FOR AN 18-INCH
 JV0361'PIPE CULVERT UNDER THE HIGHWAY, 15 1/2 FEET SOUTHEAST OF THE
 JV0361'CENTER LINE OF THE HIGHWAY, 65 FEET NORTHEAST OF POWER LINE POLE
 JV0361'173, ABOUT LEVEL WITH THE HIGHWAY.  NOTE-- THE HEAD WALL HAS
 JV0361'A SMALL CRACK IN THE CENTER.  MARK APPEARS TO BE SOLID THOUGH.
 JV0361
 JV0361                          STATION RECOVERY (1991)
 JV0361
 JV0361'RECOVERY NOTE BY US POWER SQUADRON 1991 (GSW)
 JV0361'RECOVERED IN GOOD CONDITION.
 JV0361
 JV0361                          STATION RECOVERY (2006)
 JV0361
 JV0361'RECOVERY NOTE BY US POWER SQUADRON 2006 (DU)
 JV0361'RECOVERED IN GOOD CONDITION.
 JV0361
 JV0361                          STATION RECOVERY (2014)
 JV0361
 JV0361'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0361'RECOVERED IN GOOD CONDITION.
 JV0361
 JV0361                          STATION RECOVERY (2025)
 JV0361
 JV0361'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0361'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0288 ***********************************************************************
 JV0288  DESIGNATION -  H 71
 JV0288  PID         -  JV0288
 JV0288  STATE/COUNTY-  MD/QUEEN ANNES
 JV0288  COUNTRY     -  US
 JV0288  USGS QUAD   -  CHESTERTOWN (2017)
 JV0288
 JV0288                         *CURRENT SURVEY CONTROL
 JV0288  ______________________________________________________________________
 JV0288* NAD 83(1986) POSITION- 39 11 12.     (N) 076 00 54.     (W)   SCALED
 JV0288* NAVD 88 ORTHO HEIGHT -    15.866 (meters)       52.05  (feet) ADJUSTED
 JV0288  ______________________________________________________________________
 JV0288  GEOID HEIGHT    -        -33.535 (meters)                     GEOID18
 JV0288  DYNAMIC HEIGHT  -         15.858 (meters)       52.03  (feet) COMP
 JV0288  MODELED GRAVITY -    980,106.8   (mgal)                       NAVD 88
 JV0288
 JV0288  VERT ORDER      -  SECOND    CLASS 0
 JV0288
 JV0288.The horizontal coordinates were scaled from a map and have
 JV0288.an estimated accuracy of +/- 6 seconds.
 JV0288
 JV0288.The orthometric height was determined by differential leveling and
 JV0288.adjusted by the NATIONAL GEODETIC SURVEY
 JV0288.in June 1991.
 JV0288
 JV0288.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0288.GEOID18 height accuracy estimate available here.
 JV0288
 JV0288.Click photographs - Photos may exist for this station.
 JV0288
 JV0288.The dynamic height is computed by dividing the NAVD 88
 JV0288.geopotential number by the normal gravity value computed on the
 JV0288.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0288.degrees latitude (g = 980.6199 gals.).
 JV0288
 JV0288.The modeled gravity was interpolated from observed gravity values.
 JV0288
 JV0288;                    North         East    Units  Estimated Accuracy
 JV0288;SPC MD       -   169,190.      485,100.      MT  (+/- 180 meters Scaled)
 JV0288
 JV0288_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ123379(NAD 83)
 JV0288
 JV0288                          SUPERSEDED SURVEY CONTROL
 JV0288
 JV0288  NGVD 29 (11/26/84)   16.103  (m)           52.83   (f) ADJUSTED    2 0
 JV0288
 JV0288.Superseded values are not recommended for survey control.
 JV0288
 JV0288.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0288.See file dsdata.pdf to determine how the superseded data were derived.
 JV0288
 JV0288_MARKER: DB = BENCH MARK DISK
 JV0288_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0288_STAMPING: H 71 1942
 JV0288_MARK LOGO: CGS
 JV0288_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0288+STABILITY: SURFACE MOTION
 JV0288
 JV0288  HISTORY     - Date     Condition        Report By
 JV0288  HISTORY     - 1942     MONUMENTED       CGS
 JV0288  HISTORY     - 20031021 MARK NOT FOUND   USPSQD
 JV0288
 JV0288                          STATION DESCRIPTION
 JV0288
 JV0288'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0288'2.8 MI SE FROM CHESTERTOWN.
 JV0288'ALONG HIGHWAY 213 ABOUT 2.8 MILES SOUTHEAST OF THE SOUTHEAST END
 JV0288'OF THE CHESTER RIVER BRIDGE AT CHESTERTOWN, AT MILEAGE MARKER
 JV0288'NUMBER 39, ABOUT 100 YARDS SOUTH-SOUTHEAST AND ACROSS THE
 JV0288'HIGHWAY FROM A LARGE 3-STORY FARM HOUSE, AT A FARM ROAD LEADING
 JV0288'SOUTHWEST ACROSS A HAY FIELD TO A SMALL SHINGLE COVERED FARM
 JV0288'HOUSE, 29.8 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY,
 JV0288'12.0 FEET NORTHWEST OF THE CENTER LINE OF THE FARM ROAD, IN LINE
 JV0288'WITH THE ROW OF TELEPHONE POLES, A BENCH MARK DISK SET IN THE TOP
 JV0288'OF THE CONCRETE POST PROJECTING ABOUT 3-INCHES.
 JV0288
 JV0288                          STATION RECOVERY (2003)
 JV0288
 JV0288'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 JV0288'SEE JV0289 H-71 RESET.  RECOVERED SUCCESSFULLY ON 10-21-2003.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0289 ***********************************************************************
 JV0289  DESIGNATION -  H 71 RESET
 JV0289  PID         -  JV0289
 JV0289  STATE/COUNTY-  MD/QUEEN ANNES
 JV0289  COUNTRY     -  US
 JV0289  USGS QUAD   -  CHESTERTOWN (2017)
 JV0289
 JV0289                         *CURRENT SURVEY CONTROL
 JV0289  ______________________________________________________________________
 JV0289* NAD 83(1986) POSITION- 39 11 10.5    (N) 076 00 54.5    (W)   HD_HELD2
 JV0289* NAVD 88 ORTHO HEIGHT -    15.293 (meters)       50.17  (feet) ADJUSTED
 JV0289  ______________________________________________________________________
 JV0289  GEOID HEIGHT    -        -33.536 (meters)                     GEOID18
 JV0289  DYNAMIC HEIGHT  -         15.285 (meters)       50.15  (feet) COMP
 JV0289  MODELED GRAVITY -    980,106.8   (mgal)                       NAVD 88
 JV0289
 JV0289  VERT ORDER      -  FIRST     CLASS II
 JV0289
 JV0289.The horizontal coordinates were established by autonomous hand held GPS
 JV0289.observations and have an estimated accuracy of +/- 10 meters.
 JV0289
 JV0289.The orthometric height was determined by differential leveling and
 JV0289.adjusted by the NATIONAL GEODETIC SURVEY
 JV0289.in June 1991.
 JV0289
 JV0289.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0289.GEOID18 height accuracy estimate available here.
 JV0289
 JV0289.Click photographs - Photos may exist for this station.
 JV0289
 JV0289.The dynamic height is computed by dividing the NAVD 88
 JV0289.geopotential number by the normal gravity value computed on the
 JV0289.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0289.degrees latitude (g = 980.6199 gals.).
 JV0289
 JV0289.The modeled gravity was interpolated from observed gravity values.
 JV0289
 JV0289;                    North         East    Units  Estimated Accuracy
 JV0289;SPC MD       -   169,141.      485,086.      MT  (+/- 10 meters HH2 GPS)
 JV0289
 JV0289_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1232737936(NAD 83)
 JV0289
 JV0289                          SUPERSEDED SURVEY CONTROL
 JV0289
 JV0289  NGVD 29 (11/26/84)   15.533  (m)           50.96   (f) ADJUSTED    1 2
 JV0289
 JV0289.Superseded values are not recommended for survey control.
 JV0289
 JV0289.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0289.See file dsdata.pdf to determine how the superseded data were derived.
 JV0289
 JV0289_MARKER: DB = BENCH MARK DISK
 JV0289_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0289_STAMPING: H 71 RESET 1958
 JV0289_MARK LOGO: CGS
 JV0289_PROJECTION: FLUSH
 JV0289_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0289+STABILITY: SURFACE MOTION
 JV0289_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0289+SATELLITE: SATELLITE OBSERVATIONS - October 21, 2003
 JV0289
 JV0289  HISTORY     - Date     Condition        Report By
 JV0289  HISTORY     - 1958     MONUMENTED       CGS
 JV0289  HISTORY     - 1971     GOOD             NGS
 JV0289  HISTORY     - 19901128 MARK NOT FOUND   USPSQD
 JV0289  HISTORY     - 20031021 GOOD             USPSQD
 JV0289  HISTORY     - 20051112 POOR             USPSQD
 JV0289
 JV0289                          STATION DESCRIPTION
 JV0289
 JV0289'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0289'2.6 MI SE FROM KINGSTOWN.
 JV0289'ABOUT 2.65 MILES SOUTHEAST ALONG U.S. HIGHWAY 213 FROM THE
 JV0289'SOUTHEAST END OF THE HIGHWAY BRIDGE OVER THE CHESTER RIVER AT
 JV0289'KINGSTOWN, ALONG THE SOUTHEAST SIDE OF A FARM ROAD LEADING
 JV0289'SOUTHWEST, 186.8 FEET SOUTHWEST OF THE CENTER LINE OF THE
 JV0289'HIGHWAY, 54 1/2 FEET SOUTHWEST OF CABLE LINE POLE NO. 94 WHICH
 JV0289'ALSO IS AT A FENCE CORNER, 10 1/2 FEET SOUTHEAST OF THE CENTER
 JV0289'LINE OF A FARM ROAD, 0.8 FOOT NORTHWEST OF A FENCE LINE, 1.2
 JV0289'FEET NORTHEAST OF A METAL WITNESS POST, 1 FOOT ABOVE THE LEVEL OF
 JV0289'THE FARM ROAD AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV0289'THE GROUND.
 JV0289
 JV0289                          STATION RECOVERY (1990)
 JV0289
 JV0289'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0289'MARK NOT FOUND.
 JV0289
 JV0289                          STATION RECOVERY (2003)
 JV0289
 JV0289'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 JV0289'TO REACH THE STATION FROM THE SE END OF US HIGHWAY 13 BRIDGE OVER THE
 JV0289'CHESTER RIVER IN CHESTERTOW. PROCEED SE 2.65 MILES TO A FARM ROAD WITH
 JV0289'ADDRESS NUMBER 5901 LEADING SW.  THE STATION IS LOCATED IN TALL GRASS
 JV0289'AT THE EDGE OF A CULTIVATED FIELD, 187 FEET SW OF THE CENTER LINE OF
 JV0289'THE HIGHWAY, 54.5 FEET SW OF CABLE LINE POLE 94, 11.5 FEET SE OF THE
 JV0289'CENTER LINE OF THE FARM ROAD AND 2 FEET BELOW THE LEVEL OF THE FARM
 JV0289'ROAD.
 JV0289'
 JV0289'THE STATION IS A STANDARD DISK WHICH APPEARS TO BE FASTENED TO A METAL
 JV0289'ROD AND PROTECTED BY A 4 INCH IRON PIPE FLUSH WITH THE GROUND.  THE
 JV0289'REFERENCED FENCE AND WITNESS POST DO NOT EXIST.
 JV0289
 JV0289                          STATION RECOVERY (2005)
 JV0289
 JV0289'RECOVERY NOTE BY US POWER SQUADRON 2005 (KN)
 JV0289'STATION RECOVERY (2003) IN ERROR.  MARK NOT SET ON METAL ROD PROTECTED
 JV0289'BY PIPE.  DISK IS NOW MISSING AND CONCRETE MONUMENT WITH HOLE IN THE
 JV0289'CENTER REMAINS IN PLACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1156 ***********************************************************************
 JU1156  DESIGNATION -  H 72
 JU1156  PID         -  JU1156
 JU1156  STATE/COUNTY-  MD/CECIL
 JU1156  COUNTRY     -  US
 JU1156  USGS QUAD   -  CECILTON (2016)
 JU1156
 JU1156                         *CURRENT SURVEY CONTROL
 JU1156  ______________________________________________________________________
 JU1156* NAD 83(1986) POSITION- 39 23 38.     (N) 075 52 15.     (W)   SCALED
 JU1156* NAVD 88 ORTHO HEIGHT -    20.312 (meters)       66.64  (feet) ADJUSTED
 JU1156  ______________________________________________________________________
 JU1156  GEOID HEIGHT    -        -33.494 (meters)                     GEOID18
 JU1156  DYNAMIC HEIGHT  -         20.301 (meters)       66.60  (feet) COMP
 JU1156  MODELED GRAVITY -    980,109.6   (mgal)                       NAVD 88
 JU1156
 JU1156  VERT ORDER      -  FIRST     CLASS II
 JU1156
 JU1156.The horizontal coordinates were scaled from a map and have
 JU1156.an estimated accuracy of +/- 6 seconds.
 JU1156
 JU1156.The orthometric height was determined by differential leveling and
 JU1156.adjusted by the NATIONAL GEODETIC SURVEY
 JU1156.in June 1991.
 JU1156
 JU1156.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1156.GEOID18 height accuracy estimate available here.
 JU1156
 JU1156.Click photographs - Photos may exist for this station.
 JU1156
 JU1156.The dynamic height is computed by dividing the NAVD 88
 JU1156.geopotential number by the normal gravity value computed on the
 JU1156.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1156.degrees latitude (g = 980.6199 gals.).
 JU1156
 JU1156.The modeled gravity was interpolated from observed gravity values.
 JU1156
 JU1156;                    North         East    Units  Estimated Accuracy
 JU1156;SPC MD       -   192,340.      497,270.      MT  (+/- 180 meters Scaled)
 JU1156
 JU1156_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ250608(NAD 83)
 JU1156
 JU1156                          SUPERSEDED SURVEY CONTROL
 JU1156
 JU1156  NGVD 29 (11/26/84)   20.555  (m)           67.44   (f) ADJUSTED    1 2
 JU1156
 JU1156.Superseded values are not recommended for survey control.
 JU1156
 JU1156.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1156.See file dsdata.pdf to determine how the superseded data were derived.
 JU1156
 JU1156_MARKER: DB = BENCH MARK DISK
 JU1156_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1156_STAMPING: H 72 1942
 JU1156_MARK LOGO: CGS
 JU1156_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1156+STABILITY: SURFACE MOTION
 JU1156
 JU1156  HISTORY     - Date     Condition        Report By
 JU1156  HISTORY     - 1942     MONUMENTED       CGS
 JU1156  HISTORY     - 1971     GOOD             NGS
 JU1156  HISTORY     - 1988     MARK NOT FOUND   USPSQD
 JU1156  HISTORY     - 1988     MARK NOT FOUND   USPSQD
 JU1156  HISTORY     - 19901019 MARK NOT FOUND   NGS
 JU1156
 JU1156                          STATION DESCRIPTION
 JU1156
 JU1156'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1156'0.8 MI S FROM CECILTON.
 JU1156'ABOUT 0.8 MILE SOUTH ALONG U.S. HIGHWAY 213 FROM THE INTERSECTION
 JU1156'OF STATE HIGHWAY 282 AT CECILTON, AT THE JUNCTION OF A ROAD WHICH
 JU1156'LEADS EAST TO A FARMHOUSE, 34 1/2 FEET EAST OF THE CENTER LINE
 JU1156'OF THE HIGHWAY, 10 FEET NORTH OF THE CENTER LINE OF THE ROAD, 7
 JU1156'FEET WEST OF A CORNER FENCE POST, NEAR A METAL WITNESS POST.
 JU1156
 JU1156                          STATION RECOVERY (1988)
 JU1156
 JU1156'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1156'MARK NOT FOUND.
 JU1156
 JU1156                          STATION RECOVERY (1988)
 JU1156
 JU1156'RECOVERY NOTE BY US POWER SQUADRON 1988 (VS)
 JU1156'MARK NOT FOUND.
 JU1156
 JU1156                          STATION RECOVERY (1990)
 JU1156
 JU1156'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JU1156'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1553 ***********************************************************************
 HV1553  DESIGNATION -  H 73
 HV1553  PID         -  HV1553
 HV1553  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1553  COUNTRY     -  US
 HV1553  USGS QUAD   -  DEALE OE E (2016)
 HV1553
 HV1553                         *CURRENT SURVEY CONTROL
 HV1553  ______________________________________________________________________
 HV1553* NAD 83(1986) POSITION- 38 51 06.     (N) 076 29 44.     (W)   SCALED
 HV1553* NAVD 88 ORTHO HEIGHT -     1.891 (meters)        6.20  (feet) ADJUSTED
 HV1553  ______________________________________________________________________
 HV1553  GEOID HEIGHT    -        -33.526 (meters)                     GEOID18
 HV1553  DYNAMIC HEIGHT  -          1.890 (meters)        6.20  (feet) COMP
 HV1553  MODELED GRAVITY -    980,068.4   (mgal)                       NAVD 88
 HV1553
 HV1553  VERT ORDER      -  SECOND    CLASS 0
 HV1553
 HV1553.The horizontal coordinates were scaled from a map and have
 HV1553.an estimated accuracy of +/- 6 seconds.
 HV1553
 HV1553.The orthometric height was determined by differential leveling and
 HV1553.adjusted by the NATIONAL GEODETIC SURVEY
 HV1553.in June 1991.
 HV1553
 HV1553.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1553.GEOID18 height accuracy estimate available here.
 HV1553
 HV1553.Click photographs - Photos may exist for this station.
 HV1553
 HV1553.The dynamic height is computed by dividing the NAVD 88
 HV1553.geopotential number by the normal gravity value computed on the
 HV1553.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1553.degrees latitude (g = 980.6199 gals.).
 HV1553
 HV1553.The modeled gravity was interpolated from observed gravity values.
 HV1553
 HV1553;                    North         East    Units  Estimated Accuracy
 HV1553;SPC MD       -   131,660.      443,790.      MT  (+/- 180 meters Scaled)
 HV1553
 HV1553_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ702013(NAD 83)
 HV1553
 HV1553                          SUPERSEDED SURVEY CONTROL
 HV1553
 HV1553  NGVD 29 (11/26/84)    2.151  (m)            7.06   (f) ADJUSTED    2 0
 HV1553
 HV1553.Superseded values are not recommended for survey control.
 HV1553
 HV1553.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1553.See file dsdata.pdf to determine how the superseded data were derived.
 HV1553
 HV1553_MARKER: DB = BENCH MARK DISK
 HV1553_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1553_STAMPING: H 73 1942
 HV1553_MARK LOGO: CGS
 HV1553_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1553+STABILITY: SURFACE MOTION
 HV1553
 HV1553  HISTORY     - Date     Condition        Report By
 HV1553  HISTORY     - 1942     MONUMENTED       CGS
 HV1553  HISTORY     - 1967     GOOD             CGS
 HV1553
 HV1553                          STATION DESCRIPTION
 HV1553
 HV1553'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 HV1553'1.5 MI E FROM SHADYSIDE.
 HV1553'ABOUT 1.5 MILES EAST OF THE POST OFFICE AT SHADYSIDE, ANNE ARUNDEL
 HV1553'COUNTY, AT THE IDLEWILDE PIER, 53.6 FEET SOUTHEAST OF THE INSHORE
 HV1553'END OF THE WOODEN PIER, 100 FEET EAST OF THE EAST CORNER OF THE
 HV1553'MEL-ROSE COTTAGE, 15.5 FEET WEST OF THE WOODEN BULKHEAD ALONG THE
 HV1553'SHORE, AND 22.2 FEET NORTH-NORTHEAST OF A 10-INCH MAPLE TREE.  A
 HV1553'STANDARD DISK, STAMPED H 73 1942 AND SET IN THE TOP OF A CONCRETE
 HV1553'POST PROJECTING ABOUT 2 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0511 ***********************************************************************
 JV0511  DESIGNATION -  H 74
 JV0511  PID         -  JV0511
 JV0511  STATE/COUNTY-  MD/BALTIMORE
 JV0511  COUNTRY     -  US
 JV0511  USGS QUAD   -  SPARROWS POINT (2016)
 JV0511
 JV0511                         *CURRENT SURVEY CONTROL
 JV0511  ______________________________________________________________________
 JV0511* NAD 83(1986) POSITION- 39 13 15.     (N) 076 25 55.     (W)   SCALED
 JV0511* NAVD 88 ORTHO HEIGHT -     6.144 (meters)       20.16  (feet) POSTED
 JV0511  ______________________________________________________________________
 JV0511  GEOID HEIGHT    -        -33.038 (meters)                     GEOID18
 JV0511  DYNAMIC HEIGHT  -          6.14  (meters)       20.1   (feet) COMP
 JV0511  MODELED GRAVITY -    980,114.8   (mgal)                       NAVD 88
 JV0511
 JV0511  VERT ORDER      -  * POSTED, SEE BELOW
 JV0511
 JV0511.The horizontal coordinates were scaled from a map and have
 JV0511.an estimated accuracy of +/- 6 seconds.
 JV0511
 JV0511.The orthometric height was determined by differential leveling
 JV0511.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV0511
 JV0511.* This is a POSTED BENCH MARK height.
 JV0511
 JV0511.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0511.GEOID18 height accuracy estimate available here.
 JV0511
 JV0511.Click photographs - Photos may exist for this station.
 JV0511
 JV0511.The dynamic height is computed by dividing the NAVD 88
 JV0511.geopotential number by the normal gravity value computed on the
 JV0511.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0511.degrees latitude (g = 980.6199 gals.).
 JV0511
 JV0511.The modeled gravity was interpolated from observed gravity values.
 JV0511
 JV0511;                    North         East    Units  Estimated Accuracy
 JV0511;SPC MD       -   172,670.      449,050.      MT  (+/- 180 meters Scaled)
 JV0511
 JV0511_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ763422(NAD 83)
 JV0511
 JV0511                          SUPERSEDED SURVEY CONTROL
 JV0511
 JV0511  NGVD 29 (11/26/84)    6.422  (m)           21.07   (f) ADJUSTED    2 0
 JV0511
 JV0511.Superseded values are not recommended for survey control.
 JV0511
 JV0511.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0511.See file dsdata.pdf to determine how the superseded data were derived.
 JV0511
 JV0511_MARKER: DB = BENCH MARK DISK
 JV0511_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0511_STAMPING: H 74 1942
 JV0511_MARK LOGO: CGS
 JV0511_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0511+STABILITY: SURFACE MOTION
 JV0511_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0511+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2012
 JV0511
 JV0511  HISTORY     - Date     Condition        Report By
 JV0511  HISTORY     - 1942     MONUMENTED       CGS
 JV0511  HISTORY     - 20090625 GOOD             MD-005
 JV0511  HISTORY     - 20121204 GOOD             USPSQD
 JV0511
 JV0511                          STATION DESCRIPTION
 JV0511
 JV0511'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0511'1.4 MI N FROM FT HOWARD.
 JV0511'ABOUT 1.4 MILES NORTH OF THE TROLLY TRACK CROSSING AT FT. HOWARD,
 JV0511'AT A ROAD INTERSECTION AND ELECTRIC RAILWAY CROSSING, IN THE
 JV0511'NORTHEAST ANGLE OF THE CROSSING, 24 FEET EAST OF THE CENTER LINE
 JV0511'OF THE ROAD AT THE END OF THE STATE MAINTAINANCE LINE ON HIGHWAY
 JV0511'20, 33.8 FEET NORTHEAST OF THE CENTER OF THE CROSSING, 12 FEET NORTH
 JV0511'OF THE NORTH RAIL OF THE RAILWAY, 2 1/2 FEET NORTHEAST OF A POWER
 JV0511'POLE, AND IS A BENCH MARK DISK SET IN THE TOP OF A CONCRETE POST.
 JV0511'STAMPED H 74 1942.
 JV0511
 JV0511                          STATION RECOVERY (2009)
 JV0511
 JV0511'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 JV0511'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (ATA).
 JV0511'ADDITIONAL INFORMATION FOR THE STATION FOLLOWS - THE TROLLY TRACKS NO
 JV0511'LONGER EXIST AND THE STATION IS LOCATED 25.4 FEET SOUTHEAST OF THE
 JV0511'CENTERLINE OF NORTH POINT ROAD. IT IS 39.8 FEET  NORTHEASTERLY FROM A
 JV0511'SANITARY SEWER MANHOLE, 2.6 FEET NORTHERLY FROM THE UTILITY POLE
 JV0511'NUMBERED 74 1/4 AND 21.6 FEET SOUTHERLY FROM THE UTILITY POLE NUMBERED
 JV0511'54434.
 JV0511'
 JV0511'THIS UPDATED NAD83(2007) POSITION WAS OBTAINED BY THE BALTIMORE COUNTY
 JV0511'LAND SURVEY DIVISION, FOR THE STATION, 39-13-15.53122(N) AND
 JV0511'76-25-55.23646(W).
 JV0511
 JV0511                          STATION RECOVERY (2012)
 JV0511
 JV0511'RECOVERY NOTE BY US POWER SQUADRON 2012
 JV0511'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0132 ***********************************************************************
 HV0132  DESIGNATION -  H 75
 HV0132  PID         -  HV0132
 HV0132  STATE/COUNTY-  MD/QUEEN ANNES
 HV0132  COUNTRY     -  US
 HV0132  USGS QUAD   -  QUEENSTOWN (2016)
 HV0132
 HV0132                         *CURRENT SURVEY CONTROL
 HV0132  ______________________________________________________________________
 HV0132* NAD 83(1986) POSITION- 38 55 59.     (N) 076 07 56.     (W)   SCALED
 HV0132* NAVD 88 ORTHO HEIGHT -    17.475 (meters)       57.33  (feet) ADJUSTED
 HV0132  ______________________________________________________________________
 HV0132  GEOID HEIGHT    -        -34.119 (meters)                     GEOID18
 HV0132  DYNAMIC HEIGHT  -         17.465 (meters)       57.30  (feet) COMP
 HV0132  MODELED GRAVITY -    980,063.6   (mgal)                       NAVD 88
 HV0132
 HV0132  VERT ORDER      -  SECOND    CLASS 0
 HV0132
 HV0132.The horizontal coordinates were scaled from a map and have
 HV0132.an estimated accuracy of +/- 6 seconds.
 HV0132
 HV0132.The orthometric height was determined by differential leveling and
 HV0132.adjusted by the NATIONAL GEODETIC SURVEY
 HV0132.in June 1991.
 HV0132
 HV0132.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0132.GEOID18 height accuracy estimate available here.
 HV0132
 HV0132.Click photographs - Photos may exist for this station.
 HV0132
 HV0132.The dynamic height is computed by dividing the NAVD 88
 HV0132.geopotential number by the normal gravity value computed on the
 HV0132.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0132.degrees latitude (g = 980.6199 gals.).
 HV0132
 HV0132.The modeled gravity was interpolated from observed gravity values.
 HV0132
 HV0132;                    North         East    Units  Estimated Accuracy
 HV0132;SPC MD       -   140,930.      475,240.      MT  (+/- 180 meters Scaled)
 HV0132
 HV0132_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ018099(NAD 83)
 HV0132
 HV0132                          SUPERSEDED SURVEY CONTROL
 HV0132
 HV0132  NGVD 29 (11/26/84)   17.685  (m)           58.02   (f) ADJUSTED    2 0
 HV0132
 HV0132.Superseded values are not recommended for survey control.
 HV0132
 HV0132.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0132.See file dsdata.pdf to determine how the superseded data were derived.
 HV0132
 HV0132_MARKER: DB = BENCH MARK DISK
 HV0132_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0132_STAMPING: H 75 1942
 HV0132_MARK LOGO: CGS
 HV0132_PROJECTION: PROJECTING 13 CENTIMETERS
 HV0132_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0132+STABILITY: SURFACE MOTION
 HV0132
 HV0132  HISTORY     - Date     Condition        Report By
 HV0132  HISTORY     - 1942     MONUMENTED       CGS
 HV0132  HISTORY     - 20030423 MARK NOT FOUND   USPSQD
 HV0132
 HV0132                          STATION DESCRIPTION
 HV0132
 HV0132'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0132'3 MI NW FROM WYE MILLS.
 HV0132'THIS MARK IS ABOUT 3.0 MILES NORTHWEST ALONG HIGHWAY 404 FROM WYE
 HV0132'MILLS POST OFFICE, AND ABOUT 3.0 MILES ALONG HIGHWAY LEADING TO
 HV0132'WYE ISLAND, 28.7 FEET SOUTHWEST OF CENTER LINE OF ROAD, 38.4
 HV0132'FEET SOUTHEAST OF POLE NUMBER 339, 26.6 FEET NORTHEAST OF A
 HV0132'12-INCH OAK TREE, 5-INCHES ABOVE THE GROUND, NEAR A WHITE
 HV0132'REFERENCE POST, AND SET IN THE TOP OF A CONCRETE POST.  A STANDARD
 HV0132'DISK.
 HV0132
 HV0132                          STATION RECOVERY (2003)
 HV0132
 HV0132'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HV0132'REFERENCED POWER POLES REPLACED AND RENUMBERED.  EXTENSIVE GRADING AND
 HV0132'DRAINAGE DITCH CONSTRUCTION IN THE AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0183 ***********************************************************************
 HV0183  DESIGNATION -  H 76
 HV0183  PID         -  HV0183
 HV0183  STATE/COUNTY-  MD/QUEEN ANNES
 HV0183  COUNTRY     -  US
 HV0183  USGS QUAD   -  CLAIBORNE (2016)
 HV0183
 HV0183                         *CURRENT SURVEY CONTROL
 HV0183  ______________________________________________________________________
 HV0183* NAD 83(1986) POSITION- 38 51 47.     (N) 076 21 20.     (W)   SCALED
 HV0183* NAVD 88 ORTHO HEIGHT -     3.757 (meters)       12.33  (feet) ADJUSTED
 HV0183  ______________________________________________________________________
 HV0183  GEOID HEIGHT    -        -33.801 (meters)                     GEOID18
 HV0183  DYNAMIC HEIGHT  -          3.755 (meters)       12.32  (feet) COMP
 HV0183  MODELED GRAVITY -    980,067.7   (mgal)                       NAVD 88
 HV0183
 HV0183  VERT ORDER      -  SECOND    CLASS 0
 HV0183
 HV0183.The horizontal coordinates were scaled from a map and have
 HV0183.an estimated accuracy of +/- 6 seconds.
 HV0183
 HV0183.The orthometric height was determined by differential leveling and
 HV0183.adjusted by the NATIONAL GEODETIC SURVEY
 HV0183.in June 1991.
 HV0183
 HV0183.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0183.GEOID18 height accuracy estimate available here.
 HV0183
 HV0183.Click photographs - Photos may exist for this station.
 HV0183
 HV0183.The dynamic height is computed by dividing the NAVD 88
 HV0183.geopotential number by the normal gravity value computed on the
 HV0183.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0183.degrees latitude (g = 980.6199 gals.).
 HV0183
 HV0183.The modeled gravity was interpolated from observed gravity values.
 HV0183
 HV0183;                    North         East    Units  Estimated Accuracy
 HV0183;SPC MD       -   133,000.      455,930.      MT  (+/- 180 meters Scaled)
 HV0183
 HV0183_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ823024(NAD 83)
 HV0183
 HV0183                          SUPERSEDED SURVEY CONTROL
 HV0183
 HV0183  NGVD 29 (11/26/84)    3.993  (m)           13.10   (f) ADJUSTED    2 0
 HV0183
 HV0183.Superseded values are not recommended for survey control.
 HV0183
 HV0183.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0183.See file dsdata.pdf to determine how the superseded data were derived.
 HV0183
 HV0183_MARKER: DB = BENCH MARK DISK
 HV0183_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0183_STAMPING: H 76 1942
 HV0183_MARK LOGO: CGS
 HV0183_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0183+STABILITY: SURFACE MOTION
 HV0183
 HV0183  HISTORY     - Date     Condition        Report By
 HV0183  HISTORY     - 1942     MONUMENTED       CGS
 HV0183  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 HV0183
 HV0183                          STATION DESCRIPTION
 HV0183
 HV0183'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0183'9 MI S FROM STEVENSVILLE.
 HV0183'THIS MARK IS ABOUT 9.0 MILES SOUTH OF THE WYE JUNCTION OF
 HV0183'STEVENSVILLE, AND ABOUT 6.5 MILES FROM THE T JUNCTION OF HIGHWAY
 HV0183'404 AND 33, SET ON THE WEST SIDE OF THE ROAD, IN A FENCE
 HV0183'CORNER, ABOUT 0.5 MILE FROM THE END OF THE MAIN ROAD, 28.2
 HV0183'FEET WEST OF THE CENTER LINE OF THE ROAD, 3.2 FEET NORTHWEST
 HV0183'OF THE FENCE POST, NEAR A WHITE REFERENCE POST.  A STANDARD
 HV0183'DISK, SET IN THE TOP OF A CONCRETE POST.
 HV0183
 HV0183                          STATION RECOVERY (1983)
 HV0183
 HV0183'RECOVERY NOTE BY US POWER SQUADRON 1983
 HV0183'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1280 ***********************************************************************
 JU1280  DESIGNATION -  H 78 RESET
 JU1280  PID         -  JU1280
 JU1280  STATE/COUNTY-  MD/QUEEN ANNES
 JU1280  COUNTRY     -  US
 JU1280  USGS QUAD   -  SUDLERSVILLE (2017)
 JU1280
 JU1280                         *CURRENT SURVEY CONTROL
 JU1280  ______________________________________________________________________
 JU1280* NAD 83(1986) POSITION- 39 08 41.0    (N) 075 50 18.8    (W)   HD_HELD2
 JU1280* NAVD 88 ORTHO HEIGHT -    20.45  (meters)       67.1   (feet) RESET
 JU1280  ______________________________________________________________________
 JU1280  GEOID HEIGHT    -        -33.913 (meters)                     GEOID18
 JU1280  DYNAMIC HEIGHT  -         20.44  (meters)       67.1   (feet) COMP
 JU1280  MODELED GRAVITY -    980,092.9   (mgal)                       NAVD 88
 JU1280
 JU1280  VERT ORDER      -  THIRD
 JU1280
 JU1280.The horizontal coordinates were established by autonomous hand held GPS
 JU1280.observations and have an estimated accuracy of +/- 10 meters.
 JU1280
 JU1280.The orthometric height was computed from unverified reset data.
 JU1280
 JU1280.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1280.GEOID18 height accuracy estimate available here.
 JU1280
 JU1280.Click photographs - Photos may exist for this station.
 JU1280
 JU1280.The dynamic height is computed by dividing the NAVD 88
 JU1280.geopotential number by the normal gravity value computed on the
 JU1280.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1280.degrees latitude (g = 980.6199 gals.).
 JU1280
 JU1280.The modeled gravity was interpolated from observed gravity values.
 JU1280
 JU1280;                    North         East    Units  Estimated Accuracy
 JU1280;SPC MD       -   164,711.      500,400.      MT  (+/- 10 meters HH2 GPS)
 JU1280
 JU1280_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2753533171(NAD 83)
 JU1280
 JU1280                          SUPERSEDED SURVEY CONTROL
 JU1280
 JU1280  NAD 27      -  39 08 40.26900(N)    075 50 20.20900(W) AD(       ) 3
 JU1280  NGVD 29 (??/??/??)   20.69   (m)           67.9    (f) RESET       3  
 JU1280
 JU1280.Superseded values are not recommended for survey control.
 JU1280
 JU1280.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1280.See file dsdata.pdf to determine how the superseded data were derived.
 JU1280
 JU1280_MARKER: DB = BENCH MARK DISK
 JU1280_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1280_STAMPING: H 78 RESET 1971
 JU1280_MARK LOGO: CGS
 JU1280_PROJECTION: PROJECTING 8 CENTIMETERS
 JU1280_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1280+STABILITY: SURFACE MOTION
 JU1280_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1280+SATELLITE: SATELLITE OBSERVATIONS - October 26, 2004
 JU1280
 JU1280  HISTORY     - Date     Condition        Report By
 JU1280  HISTORY     - 1971     MONUMENTED       NGS
 JU1280  HISTORY     - 1990     GOOD             USPSQD
 JU1280  HISTORY     - 19900612 GOOD             NGS
 JU1280  HISTORY     - 20041026 GOOD             USPSQD
 JU1280
 JU1280                          STATION DESCRIPTION
 JU1280
 JU1280'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1280'1.3 MI E FROM BARCLAY.
 JU1280'1.3 MILES EAST FROM THE JUNCTION OF STATE HIGHWAYS 313 AND
 JU1280'302 IN BARCLAY AND/OR 4.15 MILES WEST FROM THE JUNCTION OF
 JU1280'STATE HIGHWAYS 454 AND 302 IN TEMPLEVILLE, ALONG STATE HIGHWAY
 JU1280'302.  IT IS NORTH OF THE HIGHWAY, 0.25 MILE WEST OF A CROSSROAD
 JU1280'AND INTERSECTION OF HIGHWAY 302 AND DIXON TAVERN ROAD, 0.15 MILE
 JU1280'EAST OF HOWARD-WILSON ROAD SOUTH FROM THE HIGHWAY, 180 FEET
 JU1280'WEST OF THE CENTER OF INTERSECTION OF THE HIGHWAY AND A FARM
 JU1280'ROAD SOUTH, 42.5 FEET NORTH OF THE CENTERLINE OF HIGHWAY, AND
 JU1280'1.5 FEET EAST OF A METAL WITNESS SIGN AND POST. THE DISK IS
 JU1280'SET IN TOP OF ROUND CONCRETE MONUMENT THAT PROJECTS 3-INCHES
 JU1280'ABOVE GROUND LEVEL.
 JU1280
 JU1280                          STATION RECOVERY (1990)
 JU1280
 JU1280'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JU1280'RECOVERED IN GOOD CONDITION.
 JU1280
 JU1280                          STATION RECOVERY (1990)
 JU1280
 JU1280'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JU1280'RECOVERED IN GOOD CONDITION.
 JU1280
 JU1280                          STATION RECOVERY (2004)
 JU1280
 JU1280'RECOVERY NOTE BY US POWER SQUADRON 2004 (KN)
 JU1280'SEE RECOVERY NOTES FOR JU1279 AND JU2073.
 JU1280'THE ROAD HAS BEEN IMPROVED.  THE MARK IS 44 FEET N OF THE CENTERLINE
 JU1280'OF HIGHWAY 302, .5 FEET S OF A METAL WITNESS SIGN AND PROJECTS 5
 JU1280'INCHES ABOVE GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1557 ***********************************************************************
 JV1557  DESIGNATION -  H 79
 JV1557  PID         -  JV1557
 JV1557  STATE/COUNTY-  MD/BALTIMORE
 JV1557  COUNTRY     -  US
 JV1557  USGS QUAD   -  PHOENIX (2016)
 JV1557
 JV1557                         *CURRENT SURVEY CONTROL
 JV1557  ______________________________________________________________________
 JV1557* NAD 83(1986) POSITION- 39 31 12.     (N) 076 34 05.     (W)   SCALED
 JV1557* NAVD 88 ORTHO HEIGHT -   170.628 (meters)      559.80  (feet) ADJUSTED
 JV1557  ______________________________________________________________________
 JV1557  GEOID HEIGHT    -        -32.465 (meters)                     GEOID18
 JV1557  DYNAMIC HEIGHT  -        170.539 (meters)      559.51  (feet) COMP
 JV1557  MODELED GRAVITY -    980,102.1   (mgal)                       NAVD 88
 JV1557
 JV1557  VERT ORDER      -  SECOND    CLASS 0
 JV1557
 JV1557.The horizontal coordinates were scaled from a map and have
 JV1557.an estimated accuracy of +/- 6 seconds.
 JV1557
 JV1557.The orthometric height was determined by differential leveling and
 JV1557.adjusted by the NATIONAL GEODETIC SURVEY
 JV1557.in June 1991.
 JV1557
 JV1557.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1557.GEOID18 height accuracy estimate available here.
 JV1557
 JV1557.Click photographs - Photos may exist for this station.
 JV1557
 JV1557.The dynamic height is computed by dividing the NAVD 88
 JV1557.geopotential number by the normal gravity value computed on the
 JV1557.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1557.degrees latitude (g = 980.6199 gals.).
 JV1557
 JV1557.The modeled gravity was interpolated from observed gravity values.
 JV1557
 JV1557;                    North         East    Units  Estimated Accuracy
 JV1557;SPC MD       -   205,820.      437,140.      MT  (+/- 180 meters Scaled)
 JV1557
 JV1557_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ652756(NAD 83)
 JV1557
 JV1557                          SUPERSEDED SURVEY CONTROL
 JV1557
 JV1557  NGVD 29 (11/26/84)  170.865  (m)          560.58   (f) ADJUSTED    2 0
 JV1557
 JV1557.Superseded values are not recommended for survey control.
 JV1557
 JV1557.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1557.See file dsdata.pdf to determine how the superseded data were derived.
 JV1557
 JV1557_MARKER: DB = BENCH MARK DISK
 JV1557_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1557_SP_SET: CULVERT
 JV1557_STAMPING: H 79 1942
 JV1557_MARK LOGO: CGS
 JV1557_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1557
 JV1557  HISTORY     - Date     Condition        Report By
 JV1557  HISTORY     - 1942     MONUMENTED       CGS
 JV1557  HISTORY     - 1965     MARK NOT FOUND   CGS
 JV1557
 JV1557                          STATION DESCRIPTION
 JV1557
 JV1557'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1557'0.5 MI W FROM JACKSONVILLE.
 JV1557'THIS MARK IS ABOUT 0.5 MILE WEST ALONG ROAD NUMBER 145 FROM THE
 JV1557'INTERSECTION AT JACKSONVILLE, BALTIMORE COUNTY, 12.0 FEET SOUTH
 JV1557'OF THE CENTER LINE OF THE ROAD, 123.5 FEET EAST OF A 22-INCH
 JV1557'SYCAMORE TREE, SET IN THE WEST END OF THE SOUTH HEADWALL OF A
 JV1557'18-INCH CORRUGATED IRON PIPE CULVERT, ABOUT 6-INCHES HIGHER THAN
 JV1557'THE ROAD.  STAMPED H 79 1942.
 JV1557
 JV1557                          STATION RECOVERY (1965)
 JV1557
 JV1557'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 JV1557'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0591 ***********************************************************************
 HU0591  DESIGNATION -  H 8
 HU0591  PID         -  HU0591
 HU0591  STATE/COUNTY-  MD/SOMERSET
 HU0591  COUNTRY     -  US
 HU0591  USGS QUAD   -  KINGSTON (2016)
 HU0591
 HU0591                         *CURRENT SURVEY CONTROL
 HU0591  ______________________________________________________________________
 HU0591* NAD 83(1986) POSITION- 38 07 06.     (N) 075 42 31.     (W)   SCALED
 HU0591* NAVD 88 ORTHO HEIGHT -     3.781 (meters)       12.40  (feet) ADJUSTED
 HU0591  ______________________________________________________________________
 HU0591  GEOID HEIGHT    -        -36.085 (meters)                     GEOID18
 HU0591  DYNAMIC HEIGHT  -          3.779 (meters)       12.40  (feet) COMP
 HU0591  MODELED GRAVITY -    979,980.3   (mgal)                       NAVD 88
 HU0591
 HU0591  VERT ORDER      -  FIRST     CLASS II
 HU0591
 HU0591.The horizontal coordinates were scaled from a map and have
 HU0591.an estimated accuracy of +/- 6 seconds.
 HU0591
 HU0591.The orthometric height was determined by differential leveling and
 HU0591.adjusted by the NATIONAL GEODETIC SURVEY
 HU0591.in June 1991.
 HU0591
 HU0591.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0591.GEOID18 height accuracy estimate available here.
 HU0591
 HU0591.Click photographs - Photos may exist for this station.
 HU0591
 HU0591.The dynamic height is computed by dividing the NAVD 88
 HU0591.geopotential number by the normal gravity value computed on the
 HU0591.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0591.degrees latitude (g = 980.6199 gals.).
 HU0591
 HU0591.The modeled gravity was interpolated from observed gravity values.
 HU0591
 HU0591;                    North         East    Units  Estimated Accuracy
 HU0591;SPC MD       -    50,940.      513,240.      MT  (+/- 180 meters Scaled)
 HU0591
 HU0591_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH378191(NAD 83)
 HU0591
 HU0591                          SUPERSEDED SURVEY CONTROL
 HU0591
 HU0591  NGVD 29 (11/26/84)    4.022  (m)           13.20   (f) ADJUSTED    1 2
 HU0591
 HU0591.Superseded values are not recommended for survey control.
 HU0591
 HU0591.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0591.See file dsdata.pdf to determine how the superseded data were derived.
 HU0591
 HU0591_MARKER: DB = BENCH MARK DISK
 HU0591_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0591_STAMPING: H 8 1935
 HU0591_MARK LOGO: CGS
 HU0591_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0591_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0591+STABILITY: SURFACE MOTION
 HU0591
 HU0591  HISTORY     - Date     Condition        Report By
 HU0591  HISTORY     - 1935     MONUMENTED       CGS
 HU0591  HISTORY     - 1942     GOOD             CGS
 HU0591  HISTORY     - 1963     MARK NOT FOUND   CGS
 HU0591  HISTORY     - 19901025 MARK NOT FOUND   NGS
 HU0591
 HU0591                          STATION DESCRIPTION
 HU0591
 HU0591'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HU0591'AT WESTOVER.
 HU0591'AT WESTOVER, SOMERSET COUNTY, ON THE PENNSYLVANIA RAILROAD, ABOUT
 HU0591'2,700 FEET SOUTHWEST OF THE STATION, ABOUT 2,140 FEET SOUTHWEST OF
 HU0591'MILEPOST 14-3, 250 FEET NORTHEAST OF THE WESTOVER FLOUR MILLS, 100
 HU0591'FEET NORTH OF THE CENTER OF A DIRT-ROAD CROSSING, 51 FEET SOUTH OF
 HU0591'A 1-FOOT PIPE CULVERT ON STATE HIGHWAY 413, 25 FEET SOUTHEAST OF
 HU0591'THE CENTERLINE OF THE CONCRETE PAVEMENT, 25 FEET NORTHWEST OF THE
 HU0591'CENTERLINE OF THE TRACK, AND ABOUT 1-1/2 FEET LOWER THAN THE TRACK.
 HU0591'A STANDARD DISK, STAMPED H 8 1935 AND SET IN THE TOP OF A CONCRETE
 HU0591'POST PROJECTING 3 INCHES ABOVE GROUND.
 HU0591
 HU0591                          STATION RECOVERY (1963)
 HU0591
 HU0591'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963
 HU0591'MARK NOT FOUND.
 HU0591
 HU0591                          STATION RECOVERY (1990)
 HU0591
 HU0591'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0591'THE DESCRIBED LOCATION IS NOW AT THE EDGE OF THE HIGHWAY PAVEMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4783 ***********************************************************************
 AB4783  DESIGNATION -  H 8 AZ MK
 AB4783  PID         -  AB4783
 AB4783  STATE/COUNTY-  MD/CARROLL
 AB4783  COUNTRY     -  US
 AB4783  USGS QUAD   -  HAMPSTEAD (2016)
 AB4783
 AB4783                         *CURRENT SURVEY CONTROL
 AB4783  ______________________________________________________________________
 AB4783* NAD 83(2011) POSITION- 39 36 50.14104(N) 076 51 26.16150(W)   ADJUSTED
 AB4783* NAD 83(2011) ELLIP HT-   239.465 (meters)        (06/27/12)   ADJUSTED
 AB4783* NAD 83(2011) EPOCH   -  2010.00
 AB4783* NAVD 88 ORTHO HEIGHT -   271.6   (meters)      891.    (feet) GPS OBS
 AB4783  ______________________________________________________________________
 AB4783  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4783  GEOID HEIGHT    -        -32.193 (meters)                     GEOID99
 AB4783  GEOID HEIGHT    -        -32.178 (meters)                     GEOID18
 AB4783  NAD 83(2011) X  -  1,118,774.265 (meters)                     COMP
 AB4783  NAD 83(2011) Y  - -4,791,454.880 (meters)                     COMP
 AB4783  NAD 83(2011) Z  -  4,045,208.473 (meters)                     COMP
 AB4783  LAPLACE CORR    -          1.17  (seconds)                    DEFLEC18
 AB4783
 AB4783  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4783  Standards:
 AB4783         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4783            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4783  -------------------------------------------------------------------
 AB4783  NETWORK    1.16   3.04           0.42   0.52   1.55      0.06903275
 AB4783  -------------------------------------------------------------------
 AB4783  Click here for local accuracies and other accuracy information.
 AB4783
 AB4783.The horizontal coordinates were established by GPS observations
 AB4783.and adjusted by the National Geodetic Survey in June 2012.
 AB4783
 AB4783.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4783.been affixed to the stable North American tectonic plate. See 
 AB4783.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4783
 AB4783.The horizontal coordinates are valid at the epoch date displayed above
 AB4783.which is a decimal equivalence of Year/Month/Day.
 AB4783
 AB4783.The orthometric height was determined by GPS observations and a
 AB4783.high-resolution geoid model.
 AB4783
 AB4783.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4783.GEOID18 height accuracy estimate available here.
 AB4783
 AB4783.Click photographs - Photos may exist for this station.
 AB4783
 AB4783.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4783
 AB4783.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4783
 AB4783.The ellipsoidal height was determined by GPS observations
 AB4783.and is referenced to NAD 83.
 AB4783
 AB4783. The following values were computed from the NAD 83(2011) position.
 AB4783
 AB4783;                    North         East     Units Scale Factor Converg.
 AB4783;SPC MD       -   216,173.746   412,257.276   MT  1.00003279   +0 05 22.5
 AB4783;SPC MD       -   709,230.03  1,352,547.41   sFT  1.00003279   +0 05 22.5
 AB4783;UTM  18      - 4,386,556.346   340,569.743   MT  0.99991295   -1 11 04.1
 AB4783
 AB4783!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4783!SPC MD       -   0.99996243  x   1.00003279  =   0.99999522
 AB4783!UTM  18      -   0.99996243  x   0.99991295  =   0.99987539
 AB4783
 AB4783_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4056986556(NAD 83)
 AB4783
 AB4783                          SUPERSEDED SURVEY CONTROL
 AB4783
 AB4783  NAD 83(2007)-  39 36 50.14124(N)    076 51 26.16227(W) AD(2002.00) 0
 AB4783  ELLIP H (02/10/07)  239.486  (m)                       GP(2002.00)    
 AB4783  ELLIP H (08/30/02)  239.481  (m)                       GP(       ) 4 2
 AB4783  NAD 83(1991)-  39 36 50.14113(N)    076 51 26.16257(W) AD(       ) 1
 AB4783  ELLIP H (07/03/96)  239.392  (m)                       GP(       ) 1 1
 AB4783  NAVD 88 (07/03/96)  271.6    (m)  GEOID93  model used  GPS OBS        
 AB4783
 AB4783.Superseded values are not recommended for survey control.
 AB4783
 AB4783.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4783.See file dsdata.pdf to determine how the superseded data were derived.
 AB4783
 AB4783_MARKER: DD = SURVEY DISK
 AB4783_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4783_STAMPING: H-8 AZI 1995
 AB4783_MARK LOGO: MD-013
 AB4783_PROJECTION: FLUSH
 AB4783_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4783+STABILITY: SURFACE MOTION
 AB4783_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4783+SATELLITE: SATELLITE OBSERVATIONS - December 29, 2021
 AB4783
 AB4783  HISTORY     - Date     Condition        Report By
 AB4783  HISTORY     - 1995     MONUMENTED       MD-013
 AB4783  HISTORY     - 20051202 GOOD             GPSSS
 AB4783  HISTORY     - 20141101 GOOD             RODCON
 AB4783  HISTORY     - 20200307 GOOD             WTBALL
 AB4783  HISTORY     - 20211229 GOOD             MD-005
 AB4783
 AB4783                          STATION DESCRIPTION
 AB4783
 AB4783'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4783'STATION IS LOCATED AT HAMPSTEAD. TO REACH STATION FROM THE
 AB4783'INTERSECTION OF MD ROUTE 30 (HANOVER PIKE) AND MD ROUTE 482 (HAMPSTEAD
 AB4783'MEXICO ROAD), GO WEST ON MD ROUTE 482 FOR 0.25 MI (0.40 KM) TO THE
 AB4783'INTERSECTION WITH AN ENTRANCE ROAD LEADING NORTH TO RIDGE ENGINEERING
 AB4783'AND THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10
 AB4783'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 78.5 FT
 AB4783'(23.9 M) NORTH OF THE EDGE OF PAVE OF MD ROUTE 482, 23.6 FT (7.2 M)
 AB4783'SOUTH OF THE CENTERLINE OF THE ENTRANCE ROAD, 27.0 FT (8.2 M) WEST OF
 AB4783'THE NORTH END OF A GUARDRAIL, 51.6 FT (15.7 M) NORTH OF A WATER VALVE,
 AB4783'56.3 FT (17.2 M) NORTH OF A WATER VALVE AND 35.6 FT (10.9 M) EAST OF A
 AB4783'3 IN OAK TREE.
 AB4783
 AB4783                          STATION RECOVERY (2005)
 AB4783
 AB4783'RECOVERY NOTE BY GPS SALES AND SERVICES 2005 (CJC)
 AB4783'RECOVERED IN GOOD CONDITION.
 AB4783
 AB4783                          STATION RECOVERY (2014)
 AB4783
 AB4783'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 AB4783'RECOVERED IN GOOD CONDITION.
 AB4783
 AB4783                          STATION RECOVERY (2020)
 AB4783
 AB4783'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 AB4783'RECOVERED IN GOOD CONDITION.
 AB4783
 AB4783                          STATION RECOVERY (2021)
 AB4783
 AB4783'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2021 (JG)
 AB4783'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0230 ***********************************************************************
 JV0230  DESIGNATION -  H 80
 JV0230  PID         -  JV0230
 JV0230  STATE/COUNTY-  MD/HARFORD
 JV0230  COUNTRY     -  US
 JV0230  USGS QUAD   -  JARRETTSVILLE (2016)
 JV0230
 JV0230                         *CURRENT SURVEY CONTROL
 JV0230  ______________________________________________________________________
 JV0230* NAD 83(1986) POSITION- 39 36 17.25   (N) 076 29 33.17   (W)   HD_HELD1
 JV0230* NAVD 88 ORTHO HEIGHT -   206.731 (meters)      678.25  (feet) ADJUSTED
 JV0230  ______________________________________________________________________
 JV0230  GEOID HEIGHT    -        -32.502 (meters)                     GEOID18
 JV0230  DYNAMIC HEIGHT  -        206.626 (meters)      677.91  (feet) COMP
 JV0230  MODELED GRAVITY -    980,109.7   (mgal)                       NAVD 88
 JV0230
 JV0230  VERT ORDER      -  FIRST     CLASS II
 JV0230
 JV0230.The horizontal coordinates were determined by differentially corrected
 JV0230.hand held GPS observations or other comparable positioning techniques
 JV0230.and have an estimated accuracy of +/- 3 meters.
 JV0230
 JV0230.The orthometric height was determined by differential leveling and
 JV0230.adjusted by the NATIONAL GEODETIC SURVEY
 JV0230.in June 1991.
 JV0230
 JV0230.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0230.GEOID18 height accuracy estimate available here.
 JV0230
 JV0230.Click photographs - Photos may exist for this station.
 JV0230
 JV0230.The dynamic height is computed by dividing the NAVD 88
 JV0230.geopotential number by the normal gravity value computed on the
 JV0230.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0230.degrees latitude (g = 980.6199 gals.).
 JV0230
 JV0230.The modeled gravity was interpolated from observed gravity values.
 JV0230
 JV0230;                    North         East    Units  Estimated Accuracy
 JV0230;SPC MD       -   215,270.9     443,583.2     MT  (+/- 3 meters HH1 GPS) 
 JV0230
 JV0230_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7186284958(NAD 83)
 JV0230
 JV0230                          SUPERSEDED SURVEY CONTROL
 JV0230
 JV0230  NGVD 29 (11/26/84)  206.971  (m)          679.04   (f) ADJUSTED    1 2
 JV0230
 JV0230.Superseded values are not recommended for survey control.
 JV0230
 JV0230.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0230.See file dsdata.pdf to determine how the superseded data were derived.
 JV0230
 JV0230_MARKER: DB = BENCH MARK DISK
 JV0230_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0230_STAMPING: H 80 1942
 JV0230_MARK LOGO: CGS
 JV0230_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0230_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0230+STABILITY: SURFACE MOTION
 JV0230_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0230+SATELLITE: SATELLITE OBSERVATIONS - November 02, 1989
 JV0230
 JV0230  HISTORY     - Date     Condition        Report By
 JV0230  HISTORY     - 1942     MONUMENTED       CGS
 JV0230  HISTORY     - 1960     GOOD             CGS
 JV0230  HISTORY     - 19891102 GOOD             NGS
 JV0230  HISTORY     - 20010104 GOOD             MDSHA
 JV0230
 JV0230                          STATION DESCRIPTION
 JV0230
 JV0230'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0230'0.8 MI W FROM JARRETTSVILLE.
 JV0230'THIS MARK IS ABOUT 0.85 MILE WEST ALONG HIGHWAY 23 FROM THE
 JV0230'INTERSECTION OF HIGHWAY 23 AND HIGHWAY 165 AT JARRETTSVILLE,
 JV0230'HARFORD COUNTY, 29.0 FEET NORTHEAST OF THE CENTER LINE OF THE
 JV0230'HIGHWAY, 27.3 FEET EAST OF POLE NUMBER 55373, 7.3 FEET NORTHWEST
 JV0230'OF THE CENTER LINE OF A DRIVE WAY WHICH LEADS TO A 2 STORY
 JV0230'YELLOW HOUSE, ABOUT 0.05 MILE NORTHWEST OF A TRANSFORMER STATION,
 JV0230'2.0 FEET SOUTHWEST OF A STANDARD REFERENCE POST, STAMPED H 80 1942.
 JV0230
 JV0230                          STATION RECOVERY (1960)
 JV0230
 JV0230'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960
 JV0230'RECOVERED IN GOOD CONDITION.
 JV0230
 JV0230                          STATION RECOVERY (1989)
 JV0230
 JV0230'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JV0230'1.4 KM (0.85 MI) WESTERLY ALONG STATE HIGHWAY 23 FROM THE JUNCTION OF
 JV0230'STATE HIGHWAY 165 IN JARRETTSVILLE, 8.8 M (28.9 FT) NORTHEAST OF THE
 JV0230'CENTERLINE OF THE HIGHWAY, 6.6 M (21.7 FT) EAST OF UTILITY POLE
 JV0230'NUMBER 55373, 3.4 M (11.2 FT) WEST OF THE CENTER OF A DRIVEWAY, 0.3 M
 JV0230'(1.0 FT) SOUTH OF A WITNESS POST, LEVEL WITH THE HIGHWAY, AND IN A
 JV0230'CONCRETE MONUMENT THAT PROJECTS 0.1 M (0.3 FT) ABOVE THE GROUND
 JV0230'SURFACE.
 JV0230
 JV0230                          STATION RECOVERY (2001)
 JV0230
 JV0230'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV0230'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1654 ***********************************************************************
 JV1654  DESIGNATION -  H 81 RESET 1953 MDSRC
 JV1654  PID         -  JV1654
 JV1654  STATE/COUNTY-  MD/CARROLL
 JV1654  COUNTRY     -  US
 JV1654  USGS QUAD   -  MANCHESTER (2016)
 JV1654
 JV1654                         *CURRENT SURVEY CONTROL
 JV1654  ______________________________________________________________________
 JV1654* NAD 83(1986) POSITION- 39 42 10.     (N) 076 54 34.     (W)   SCALED
 JV1654* NAVD 88 ORTHO HEIGHT -   272.26  (meters)      893.2   (feet) RESET
 JV1654  ______________________________________________________________________
 JV1654  GEOID HEIGHT    -        -32.496 (meters)                     GEOID18
 JV1654  VERT ORDER      -  THIRD
 JV1654
 JV1654.The horizontal coordinates were scaled from a map and have
 JV1654.an estimated accuracy of +/- 6 seconds.
 JV1654
 JV1654.The orthometric height was computed from unverified reset data.
 JV1654
 JV1654.No vertical observational check was made to the station.
 JV1654
 JV1654.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1654.GEOID18 height accuracy estimate available here.
 JV1654
 JV1654.Click photographs - Photos may exist for this station.
 JV1654
 JV1654;                    North         East    Units  Estimated Accuracy
 JV1654;SPC MD       -   226,030.      407,770.      MT  (+/- 180 meters Scaled)
 JV1654
 JV1654_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ363965(NAD 83)
 JV1654
 JV1654                          SUPERSEDED SURVEY CONTROL
 JV1654
 JV1654  NGVD 29 (??/??/??)  272.46   (m)          893.9    (f) RESET       3  
 JV1654
 JV1654.Superseded values are not recommended for survey control.
 JV1654
 JV1654.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1654.See file dsdata.pdf to determine how the superseded data were derived.
 JV1654
 JV1654_MARKER: DB = BENCH MARK DISK
 JV1654_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1654_STAMPING: H 81 RESET 1953
 JV1654_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1654+STABILITY: SURFACE MOTION
 JV1654
 JV1654  HISTORY     - Date     Condition        Report By
 JV1654  HISTORY     - 1953     MONUMENTED       MDSRC
 JV1654  HISTORY     - 20031008 MARK NOT FOUND   PADT
 JV1654
 JV1654                          STATION DESCRIPTION
 JV1654
 JV1654'DESCRIBED BY MD STATE ROADS COMM 1953
 JV1654'3.1 MI NW FROM MANCHESTER.
 JV1654'3.1 MILES NORTHWEST ALONG STATE HIGHWAY 30 FROM THE POST OFFICE
 JV1654'AT MANCHESTER, CARROLL COUNTY, 35 FEET RIGHT (NORTHEAST) OF THE
 JV1654'CENTER LINE OF THE HIGHWAY AT SURVEY STATION 137+00, AND 2 FEET NORTH
 JV1654'OF THE NORTHWEST CORNER OF A RED BARN.  A STANDARD DISK, STAMPED
 JV1654'H 81 RESET 1953 AND SET IN THE TOP OF A CONCRETE POST.
 JV1654'NOTE-- THIS BENCH MARK WAS ESTABLISHED AND ITS ELEVATION
 JV1654'DETERMINED BY ENGINEERS OF THE STATE ROADS COMMISSION IN MAY 1953.
 JV1654
 JV1654                          STATION RECOVERY (2003)
 JV1654
 JV1654'RECOVERY NOTE BY PA DEPT OF TRANSP 2003 (LJM)
 JV1654'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1982 ***********************************************************************
 JV1982  DESIGNATION -  H 82
 JV1982  PID         -  JV1982
 JV1982  STATE/COUNTY-  MD/FREDERICK
 JV1982  COUNTRY     -  US
 JV1982  USGS QUAD   -  EMMITSBURG (2016)
 JV1982
 JV1982                         *CURRENT SURVEY CONTROL
 JV1982  ______________________________________________________________________
 JV1982* NAD 83(1986) POSITION- 39 41 02.     (N) 077 20 55.     (W)   SCALED
 JV1982* NAVD 88 ORTHO HEIGHT -   160.204 (meters)      525.60  (feet) ADJUSTED
 JV1982  ______________________________________________________________________
 JV1982  GEOID HEIGHT    -        -33.271 (meters)                     GEOID18
 JV1982  DYNAMIC HEIGHT  -        160.118 (meters)      525.32  (feet) COMP
 JV1982  MODELED GRAVITY -    980,083.1   (mgal)                       NAVD 88
 JV1982
 JV1982  VERT ORDER      -  SECOND    CLASS 0
 JV1982
 JV1982.The horizontal coordinates were scaled from a map and have
 JV1982.an estimated accuracy of +/- 6 seconds.
 JV1982
 JV1982.The orthometric height was determined by differential leveling and
 JV1982.adjusted by the NATIONAL GEODETIC SURVEY
 JV1982.in June 1991.
 JV1982
 JV1982.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1982.GEOID18 height accuracy estimate available here.
 JV1982
 JV1982.Click photographs - Photos may exist for this station.
 JV1982
 JV1982.The dynamic height is computed by dividing the NAVD 88
 JV1982.geopotential number by the normal gravity value computed on the
 JV1982.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1982.degrees latitude (g = 980.6199 gals.).
 JV1982
 JV1982.The modeled gravity was interpolated from observed gravity values.
 JV1982
 JV1982;                    North         East    Units  Estimated Accuracy
 JV1982;SPC MD       -   223,990.      370,090.      MT  (+/- 180 meters Scaled)
 JV1982
 JV1982_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ985953(NAD 83)
 JV1982
 JV1982                          SUPERSEDED SURVEY CONTROL
 JV1982
 JV1982  NGVD 29 (11/26/84)  160.397  (m)          526.24   (f) ADJUSTED    2 0
 JV1982
 JV1982.Superseded values are not recommended for survey control.
 JV1982
 JV1982.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1982.See file dsdata.pdf to determine how the superseded data were derived.
 JV1982
 JV1982_MARKER: DB = BENCH MARK DISK
 JV1982_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1982_STAMPING: H 82 1942
 JV1982_MARK LOGO: CGS
 JV1982_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1982+STABILITY: SURFACE MOTION
 JV1982
 JV1982  HISTORY     - Date     Condition        Report By
 JV1982  HISTORY     - 1942     MONUMENTED       CGS
 JV1982  HISTORY     - 20080902 MARK NOT FOUND   GEOCAC
 JV1982
 JV1982                          STATION DESCRIPTION
 JV1982
 JV1982'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1982'2.1 MI S FROM EMMITSBURG.
 JV1982'2.1 MILES SOUTH ALONG U.S. HIGHWAY 15 FROM THE POST OFFICE AT
 JV1982'EMMITSBURG, FREDERICK COUNTY, 78.6 FEET EAST OF THE EAST
 JV1982'CORNER OF A TWO-STORY WHITE HOUSE, 33.3 FEET WEST OF THE
 JV1982'CENTER LINE OF THE HIGHWAY, 4.4 FEET NORTH OF A POLE, AND 1
 JV1982'FOOT EAST OF A HEDGE.  A STANDARD DISK, STAMPED H 82 1942 AND
 JV1982'SET IN THE TOP OF A CONCRETE POST.
 JV1982
 JV1982                          STATION RECOVERY (2008)
 JV1982
 JV1982'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV1982'ENTIRE AREA HAS BEEN REGRADED, RESEEDED OR PAVED.  NO HOUSE, NO HEDGE,
 JV1982'AND THE POLE APPEARS TOO NEW TO BE THE ONE IN THE DESCRIPTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI4413 ***********************************************************************
 AI4413  DESIGNATION -  H 83 ECC
 AI4413  PID         -  AI4413
 AI4413  STATE/COUNTY-  MD/BALTIMORE
 AI4413  COUNTRY     -  US
 AI4413  USGS QUAD   -  HAMPSTEAD (2016)
 AI4413
 AI4413                         *CURRENT SURVEY CONTROL
 AI4413  ______________________________________________________________________
 AI4413* NAD 83(2011) POSITION- 39 34 28.11243(N) 076 46 48.35184(W)   ADJUSTED
 AI4413* NAD 83(2011) ELLIP HT-   202.803 (meters)        (06/27/12)   ADJUSTED
 AI4413* NAD 83(2011) EPOCH   -  2010.00
 AI4413* NAVD 88 ORTHO HEIGHT -   234.97  (meters)      770.9   (feet) LEVELING
 AI4413  ______________________________________________________________________
 AI4413  GEOID HEIGHT    -        -32.150 (meters)                     GEOID18
 AI4413  NAD 83(2011) X  -  1,125,858.668 (meters)                     COMP
 AI4413  NAD 83(2011) Y  - -4,792,634.063 (meters)                     COMP
 AI4413  NAD 83(2011) Z  -  4,041,809.647 (meters)                     COMP
 AI4413  LAPLACE CORR    -         -1.52  (seconds)                    DEFLEC18
 AI4413  VERT ORDER      -  THIRD ?
 AI4413
 AI4413  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI4413  Standards:
 AI4413         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI4413            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI4413  -------------------------------------------------------------------
 AI4413  NETWORK    0.71   1.16           0.31   0.27   0.59     -0.02653024
 AI4413  -------------------------------------------------------------------
 AI4413  Click here for local accuracies and other accuracy information.
 AI4413
 AI4413.The horizontal coordinates were established by GPS observations
 AI4413.and adjusted by the National Geodetic Survey in June 2012.
 AI4413
 AI4413.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI4413.been affixed to the stable North American tectonic plate. See 
 AI4413.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI4413
 AI4413.The horizontal coordinates are valid at the epoch date displayed above
 AI4413.which is a decimal equivalence of Year/Month/Day.
 AI4413
 AI4413.The orthometric height was determined by differential leveling.
 AI4413.The vertical network tie was performed by a horz. field party for horz.
 AI4413.obs reductions. Reset procedures were used to establish the elevation.
 AI4413
 AI4413.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI4413.GEOID18 height accuracy estimate available here.
 AI4413
 AI4413.Click photographs - Photos may exist for this station.
 AI4413
 AI4413.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI4413
 AI4413.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI4413
 AI4413.The ellipsoidal height was determined by GPS observations
 AI4413.and is referenced to NAD 83.
 AI4413
 AI4413. The following values were computed from the NAD 83(2011) position.
 AI4413
 AI4413;                    North         East     Units Scale Factor Converg.
 AI4413;SPC MD       -   211,806.522   418,894.782   MT  1.00002415   +0 08 16.9
 AI4413;SPC MD       -   694,901.90  1,374,323.96   sFT  1.00002415   +0 08 16.9
 AI4413;UTM  18      - 4,382,043.299   347,107.737   MT  0.99988781   -1 08 03.4
 AI4413
 AI4413!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI4413!SPC MD       -   0.99996818  x   1.00002415  =   0.99999233
 AI4413!UTM  18      -   0.99996818  x   0.99988781  =   0.99985600
 AI4413
 AI4413_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4710782043(NAD 83)
 AI4413
 AI4413                          SUPERSEDED SURVEY CONTROL
 AI4413
 AI4413  NAD 83(2007)-  39 34 28.11261(N)    076 46 48.35256(W) AD(2002.00) 0
 AI4413  ELLIP H (02/10/07)  202.823  (m)                       GP(2002.00)    
 AI4413  ELLIP H (08/30/02)  202.833  (m)                       GP(       ) 4 2
 AI4413  NAD 83(1991)-  39 34 28.11301(N)    076 46 48.35284(W) AD(       ) 1
 AI4413  ELLIP H (03/31/00)  202.780  (m)                       GP(       ) 3 1
 AI4413
 AI4413.Superseded values are not recommended for survey control.
 AI4413
 AI4413.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI4413.See file dsdata.pdf to determine how the superseded data were derived.
 AI4413
 AI4413_MARKER: S = SPIKE
 AI4413_SETTING: 33 = WOODEN OBJECT (DRIVEN IN A PILE, POLE, TREE OR STUMP)
 AI4413_SP_SET: SMALL SPIKE IN PARKING LOT
 AI4413_MARK LOGO: NONE
 AI4413_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AI4413_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AI4413_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI4413+SATELLITE: SATELLITE OBSERVATIONS - 1997
 AI4413
 AI4413  HISTORY     - Date     Condition        Report By
 AI4413  HISTORY     - 1997     MONUMENTED       MD-005
 AI4413  HISTORY     - 20211229 MARK NOT FOUND   MD-005
 AI4413
 AI4413                          STATION DESCRIPTION
 AI4413
 AI4413'DESCRIBED BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 AI4413'DESCRIBED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) . STATION
 AI4413'IS LOCATED ABOUT 6.3 MILES (10.1 KM) WEST SOUTHWEST OF HEREFORD AND
 AI4413'3.8 MILES (6.1 KM) NORTHWEST OF BUTLER.  TO REACH THE STATION FROM THE
 AI4413'INTERSECTION OF ROUTE 128 (BUTLER ROAD) AND ROUTE 25 (FALLS ROAD) IN
 AI4413'THE TOWN OF BUTLER, GO NORTHWEST ON ROUTE 25 FOR 1.1 MILES (1.8 KM) TO
 AI4413'THE INTERSECTION WITH ROUTE 88 (BLACK ROCK ROAD) ON THE LEFT.  TURN
 AI4413'LEFT AN GO WEST, SOUTHWEST, AND NORTHWEST ON ROUTE 88 FOR 3.4 MILES
 AI4413'(5.5 KM) TO THE MOUNT ZION METHODIST CHURCH AND THE STATION ON THE
 AI4413'RIGHT.  STATION MARK IS AN IRON SPIKE FLUSH TO THE MACADAM PAVING OF
 AI4413'THE CHURCH PARKING LOT.  IT IS 17.5 FEET (5.3 M) NORTHEAST OF THE
 AI4413'CENTERLINE OF ROUTE 25, 54 FEET (16.5 M) NORTHWEST OF THE CENTERLINE
 AI4413'OF MOUNT ZION ROAD EAST, 175 FEET (53.3 M) SOUTHEAST OF MOUNT ZION
 AI4413'ROAD WEST, 41 FEET (12.5 M) SOUTH FROM THE SOUTHMOST CORNER OF THE
 AI4413'CHURCH, AND 94.5 FEET (28.8 M) SOUTHEAST FROM STATION H 83 (JV1702) .
 AI4413
 AI4413                          STATION RECOVERY (2021)
 AI4413
 AI4413'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2021 (JG)
 AI4413'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1156 ***********************************************************************
 HV1156  DESIGNATION -  H 84
 HV1156  PID         -  HV1156
 HV1156  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1156  COUNTRY     -  US
 HV1156  USGS QUAD   -  SOUTH RIVER (2016)
 HV1156
 HV1156                         *CURRENT SURVEY CONTROL
 HV1156  ______________________________________________________________________
 HV1156* NAD 83(1986) POSITION- 38 54 02.     (N) 076 36 45.     (W)   SCALED
 HV1156* NAVD 88 ORTHO HEIGHT -    50.389 (meters)      165.32  (feet) ADJUSTED
 HV1156  ______________________________________________________________________
 HV1156  GEOID HEIGHT    -        -33.181 (meters)                     GEOID18
 HV1156  DYNAMIC HEIGHT  -         50.361 (meters)      165.23  (feet) COMP
 HV1156  MODELED GRAVITY -    980,065.8   (mgal)                       NAVD 88
 HV1156
 HV1156  VERT ORDER      -  FIRST     CLASS I
 HV1156
 HV1156.The horizontal coordinates were scaled from a map and have
 HV1156.an estimated accuracy of +/- 6 seconds.
 HV1156
 HV1156.The orthometric height was determined by differential leveling and
 HV1156.adjusted by the NATIONAL GEODETIC SURVEY
 HV1156.in June 1991.
 HV1156
 HV1156.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1156.GEOID18 height accuracy estimate available here.
 HV1156
 HV1156.Click photographs - Photos may exist for this station.
 HV1156
 HV1156.The dynamic height is computed by dividing the NAVD 88
 HV1156.geopotential number by the normal gravity value computed on the
 HV1156.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1156.degrees latitude (g = 980.6199 gals.).
 HV1156
 HV1156.The modeled gravity was interpolated from observed gravity values.
 HV1156
 HV1156;                    North         East    Units  Estimated Accuracy
 HV1156;SPC MD       -   137,040.      433,610.      MT  (+/- 180 meters Scaled)
 HV1156
 HV1156_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ601069(NAD 83)
 HV1156
 HV1156                          SUPERSEDED SURVEY CONTROL
 HV1156
 HV1156  NGVD 29 (11/26/84)   50.630  (m)          166.11   (f) ADJUSTED    1 1
 HV1156
 HV1156.Superseded values are not recommended for survey control.
 HV1156
 HV1156.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1156.See file dsdata.pdf to determine how the superseded data were derived.
 HV1156
 HV1156_MARKER: DB = BENCH MARK DISK
 HV1156_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1156_STAMPING: H 84 1942
 HV1156_MARK LOGO: CGS
 HV1156_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1156+STABILITY: SURFACE MOTION
 HV1156_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV1156+SATELLITE: SATELLITE OBSERVATIONS - July 20, 2005
 HV1156
 HV1156  HISTORY     - Date     Condition        Report By
 HV1156  HISTORY     - 1942     MONUMENTED       CGS
 HV1156  HISTORY     - 1971     GOOD             NGS
 HV1156  HISTORY     - 20020209 GOOD             USPSQD
 HV1156  HISTORY     - 20050720 GOOD             USPSQD
 HV1156
 HV1156                          STATION DESCRIPTION
 HV1156
 HV1156'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1156'3.2 MI NE FROM HARWOOD.
 HV1156'ABOUT 2.15 MILES NORTHEAST ALONG STATE HIGHWAY 2 FROM THE
 HV1156'SOUTHWEST END OF THE SOUTHERN HIGH SCHOOL AT HARWOOD, THENCE
 HV1156'1.05 MILES NORTHWEST ALONG BIRDSVILLE ROAD, NEAR THE JUNCTION OF
 HV1156'DODON ROAD, 171 FEET SOUTHEAST OF THE CENTER OF THE JUNCTION,
 HV1156'57 1/2 FEET EAST OF THE CENTER LINE OF BIRDSVILLE ROAD, 51.8 FEET
 HV1156'WEST OF THE NORTHWEST CORNER OF THE PORCH ON A 2-STORY FARMHOUSE,
 HV1156'88 FEET NORTH OF THE CENTER LINE OF THE DRIVEWAY TO THE HOUSE,
 HV1156'ABOUT 3 FEET ABOVE THE LEVEL OF THE ROAD, AND SET IN THE TOP OF
 HV1156'A CONCRETE POST WHICH PROJECTS 6 INCHES.
 HV1156
 HV1156                          STATION RECOVERY (2002)
 HV1156
 HV1156'RECOVERY NOTE BY US POWER SQUADRON 2002 (ATA)
 HV1156'RECOVERED IN GOOD CONDITION.
 HV1156
 HV1156                          STATION RECOVERY (2005)
 HV1156
 HV1156'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV1156'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6514 ***********************************************************************
 JV6514  DESIGNATION -  H 85 RESET
 JV6514  PID         -  JV6514
 JV6514  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6514  COUNTRY     -  US
 JV6514  USGS QUAD   -  GIBSON ISLAND (2017)
 JV6514
 JV6514                         *CURRENT SURVEY CONTROL
 JV6514  ______________________________________________________________________
 JV6514* NAD 83(1986) POSITION- 39 01 15.0    (N) 076 27 45.4    (W)   HD_HELD2
 JV6514* NAVD 88 ORTHO HEIGHT -    28.083 (meters)       92.14  (feet) ADJUSTED
 JV6514  ______________________________________________________________________
 JV6514  GEOID HEIGHT    -        -33.328 (meters)                     GEOID18
 JV6514  DYNAMIC HEIGHT  -         28.067 (meters)       92.08  (feet) COMP
 JV6514  MODELED GRAVITY -    980,075.9   (mgal)                       NAVD 88
 JV6514
 JV6514  VERT ORDER      -  SECOND    CLASS I
 JV6514
 JV6514.The horizontal coordinates were established by autonomous hand held GPS
 JV6514.observations and have an estimated accuracy of +/- 10 meters.
 JV6514
 JV6514.The orthometric height was determined by differential leveling and
 JV6514.adjusted by the NATIONAL GEODETIC SURVEY
 JV6514.in July 1996.
 JV6514
 JV6514.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6514.GEOID18 height accuracy estimate available here.
 JV6514
 JV6514.Click photographs - Photos may exist for this station.
 JV6514
 JV6514.The dynamic height is computed by dividing the NAVD 88
 JV6514.geopotential number by the normal gravity value computed on the
 JV6514.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6514.degrees latitude (g = 980.6199 gals.).
 JV6514
 JV6514.The modeled gravity was interpolated from observed gravity values.
 JV6514
 JV6514;                    North         East    Units  Estimated Accuracy
 JV6514;SPC MD       -   150,456.      446,536.      MT  (+/- 10 meters HH2 GPS)
 JV6514
 JV6514_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7338420106(NAD 83)
 JV6514
 JV6514                          SUPERSEDED SURVEY CONTROL
 JV6514
 JV6514  NGVD 29 (11/18/05)   28.33   (m)           92.9    (f) RESET       3  
 JV6514
 JV6514.Superseded values are not recommended for survey control.
 JV6514
 JV6514.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6514.See file dsdata.pdf to determine how the superseded data were derived.
 JV6514
 JV6514_MARKER: DV = VERTICAL CONTROL DISK
 JV6514_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV6514+WITH SETTING: PAVEMENT
 JV6514_SP_SET: CHURCH PORCH
 JV6514_STAMPING: H 85 RESET 1986
 JV6514_MARK LOGO: NGS
 JV6514_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6514_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6514+STABILITY: SURFACE MOTION
 JV6514
 JV6514  HISTORY     - Date     Condition        Report By
 JV6514  HISTORY     - 1986     MONUMENTED       NGS
 JV6514  HISTORY     - 19911210 GOOD             MDSHA
 JV6514
 JV6514                          STATION DESCRIPTION
 JV6514
 JV6514'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 JV6514'IN ST MARGARETS.
 JV6514'FROM A POINT WHERE STATE HIGHWAY 2 GOES NORTH OFF OF WEST BOUND U.S.
 JV6514'HIGHWAY 50, GO EAST ON U.S. HIGHWAYS 50 AND 301 FOR 1.95 KM (1.20 MI)
 JV6514'TO A CROSSROADS.  TURN RIGHT AND GO SOUTH ON OLD MILL BOTTOM ROAD FOR
 JV6514'0.8 KM (0.50 MI) TO A OFFSET CROSSROADS AND THE MARK IN THE SOUTHEAST
 JV6514'ANGLE OF THE INTERSECTION IN THE TOP LANDING FOR THE MOST NORTHERLY
 JV6514'ENTRANCE TO THE SAINT MARGARETS CHURCH.  IT IS 24.5 M (80.4 FT) SOUTH
 JV6514'FROM THE CENTER OF ST MARGARETS CHURCH ROAD, 36.0 M (118.1 FT) EAST
 JV6514'FROM THE CENTER OF PLEASANT PLAINS ROAD, 25.9 M (85.0 FT) SOUTHWEST
 JV6514'FROM A C AND P TELEPHONE POLE NUMBERED 41, 1.1 M (3.6 FT) NORTHEAST
 JV6514'FROM THE MOST NORTHWEST CORNER OF THE NORTH WING OF THE CHURCH AND
 JV6514'0.8 M (2.6 FT) NORTH FROM THE NORTH ENTRANCE.
 JV6514'THE MARK IS 0.61 M ABOVE GRD LEVEL.
 JV6514
 JV6514                          STATION RECOVERY (1991)
 JV6514
 JV6514'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6514'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1075 ***********************************************************************
 HV1075  DESIGNATION -  H 86
 HV1075  PID         -  HV1075
 HV1075  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1075  COUNTRY     -  US
 HV1075  USGS QUAD   -  PISCATAWAY (2016)
 HV1075
 HV1075                         *CURRENT SURVEY CONTROL
 HV1075  ______________________________________________________________________
 HV1075* NAD 83(1986) POSITION- 38 43 03.     (N) 076 57 40.     (W)   SCALED
 HV1075* NAVD 88 ORTHO HEIGHT -    68.774 (meters)      225.64  (feet) ADJUSTED
 HV1075  ______________________________________________________________________
 HV1075  GEOID HEIGHT    -        -32.541 (meters)                     GEOID18
 HV1075  DYNAMIC HEIGHT  -         68.735 (meters)      225.51  (feet) COMP
 HV1075  MODELED GRAVITY -    980,074.1   (mgal)                       NAVD 88
 HV1075
 HV1075  VERT ORDER      -  SECOND    CLASS 0
 HV1075
 HV1075.The horizontal coordinates were scaled from a map and have
 HV1075.an estimated accuracy of +/- 6 seconds.
 HV1075
 HV1075.The orthometric height was determined by differential leveling and
 HV1075.adjusted by the NATIONAL GEODETIC SURVEY
 HV1075.in June 1991.
 HV1075
 HV1075.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1075.GEOID18 height accuracy estimate available here.
 HV1075
 HV1075.Click photographs - Photos may exist for this station.
 HV1075
 HV1075.The dynamic height is computed by dividing the NAVD 88
 HV1075.geopotential number by the normal gravity value computed on the
 HV1075.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1075.degrees latitude (g = 980.6199 gals.).
 HV1075
 HV1075.The modeled gravity was interpolated from observed gravity values.
 HV1075
 HV1075;                    North         East    Units  Estimated Accuracy
 HV1075;SPC MD       -   116,650.      403,380.      MT  (+/- 180 meters Scaled)
 HV1075
 HV1075_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH295872(NAD 83)
 HV1075
 HV1075                          SUPERSEDED SURVEY CONTROL
 HV1075
 HV1075  NGVD 29 (05/01/89)   69.011  (m)          226.41   (f) ADJUSTED    2 0
 HV1075  NGVD 29 (??/??/87)   69.040  (m)          226.51   (f) SUPERSEDED  2 0
 HV1075
 HV1075.Superseded values are not recommended for survey control.
 HV1075
 HV1075.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1075.See file dsdata.pdf to determine how the superseded data were derived.
 HV1075
 HV1075_MARKER: DB = BENCH MARK DISK
 HV1075_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV1075_STAMPING: H 86 1942
 HV1075_MARK LOGO: CGS
 HV1075_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1075+STABILITY: SURFACE MOTION
 HV1075
 HV1075  HISTORY     - Date     Condition        Report By
 HV1075  HISTORY     - 1942     MONUMENTED       CGS
 HV1075  HISTORY     - 1966     GOOD             CGS
 HV1075
 HV1075                          STATION DESCRIPTION
 HV1075
 HV1075'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV1075'1 MI NE FROM PISCATAWAY.
 HV1075'1.05 MILES NORTHEAST ALONG THE CLINTON ROAD FROM ST. MARYS
 HV1075'CHURCH AT PISCATAWAY, AT A WEST-TO-SOUTHWEST CURVE, AT A SMALL
 HV1075'ONE-STORY COTTAGE, IN THE SOUTHWEST CORNER OF THE YARD, 91.6
 HV1075'FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE COTTAGE, 39 FEET
 HV1075'WEST OF THE CENTERLINE OF THE DRIVEWAY INTO THE YARD, 29 FEET
 HV1075'SOUTHWEST OF THE SOUTHWEST CORNER OF A WOODEN WELL HOUSE, 25 FEET
 HV1075'NORTHWEST OF THE CENTERLINE OF THE ROAD, 30.6 FEET WEST-SOUTHWEST
 HV1075'OF A 6-INCH PINE TREE ON THE WEST SIDE OF THE DRIVEWAY, 5 FEET
 HV1075'NORTHWEST OF A ROW OF POWER POLES, AND ABOUT 4 FEET HIGHER
 HV1075'THAN THE ROAD.
 HV1075
 HV1075                          STATION RECOVERY (1966)
 HV1075
 HV1075'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 HV1075'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1375 ***********************************************************************
 JV1375  DESIGNATION -  H 87
 JV1375  PID         -  JV1375
 JV1375  STATE/COUNTY-  MD/HOWARD
 JV1375  COUNTRY     -  US
 JV1375  USGS QUAD   -  CLARKSVILLE (2016)
 JV1375
 JV1375                         *CURRENT SURVEY CONTROL
 JV1375  ______________________________________________________________________
 JV1375* NAD 83(1986) POSITION- 39 11 47.82   (N) 076 56 42.86   (W)   HD_HELD1
 JV1375* NAVD 88 ORTHO HEIGHT -   118.618 (meters)      389.17  (feet) ADJUSTED
 JV1375  ______________________________________________________________________
 JV1375  GEOID HEIGHT    -        -32.023 (meters)                     GEOID18
 JV1375  DYNAMIC HEIGHT  -        118.554 (meters)      388.96  (feet) COMP
 JV1375  MODELED GRAVITY -    980,085.9   (mgal)                       NAVD 88
 JV1375
 JV1375  VERT ORDER      -  SECOND    CLASS I
 JV1375
 JV1375.The horizontal coordinates were determined by differentially corrected
 JV1375.hand held GPS observations or other comparable positioning techniques
 JV1375.and have an estimated accuracy of +/- 3 meters.
 JV1375
 JV1375.The orthometric height was determined by differential leveling and
 JV1375.adjusted by the NATIONAL GEODETIC SURVEY
 JV1375.in March 2010.
 JV1375
 JV1375.No vertical observational check was made to the station.
 JV1375
 JV1375.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1375.GEOID18 height accuracy estimate available here.
 JV1375
 JV1375.Click photographs - Photos may exist for this station.
 JV1375
 JV1375.The dynamic height is computed by dividing the NAVD 88
 JV1375.geopotential number by the normal gravity value computed on the
 JV1375.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1375.degrees latitude (g = 980.6199 gals.).
 JV1375
 JV1375.The modeled gravity was interpolated from observed gravity values.
 JV1375
 JV1375;                    North         East    Units  Estimated Accuracy
 JV1375;SPC MD       -   169,834.6     404,730.4     MT  (+/- 3 meters HH1 GPS) 
 JV1375
 JV1375_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3201840398(NAD 83)
 JV1375
 JV1375                          SUPERSEDED SURVEY CONTROL
 JV1375
 JV1375  NAVD 88 (??/??/92)  118.601  (m)          389.11   (f) SUPERSEDED  3 0
 JV1375  NGVD 29 (11/26/84)  118.820  (m)          389.83   (f) ADJUSTED    2 0
 JV1375
 JV1375.Superseded values are not recommended for survey control.
 JV1375
 JV1375.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1375.See file dsdata.pdf to determine how the superseded data were derived.
 JV1375
 JV1375_MARKER: DB = BENCH MARK DISK
 JV1375_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1375_STAMPING: H 87 1942
 JV1375_MARK LOGO: CGS
 JV1375_PROJECTION: PROJECTING 3 CENTIMETERS
 JV1375_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV1375_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1375+STABILITY: SURFACE MOTION
 JV1375_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV1375+SATELLITE: SATELLITE OBSERVATIONS - April 25, 2007
 JV1375
 JV1375  HISTORY     - Date     Condition        Report By
 JV1375  HISTORY     - 1942     MONUMENTED       CGS
 JV1375  HISTORY     - 1965     GOOD             CGS
 JV1375  HISTORY     - 20020225 GOOD             HOBBS
 JV1375  HISTORY     - 20061222 GOOD             NGS
 JV1375  HISTORY     - 20070425 GOOD             MDSHA
 JV1375
 JV1375                          STATION DESCRIPTION
 JV1375
 JV1375'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1375'1.4 MI N FROM HIGHLAND.
 JV1375'0.7 MILE SOUTH ALONG OLD U.S. HIGHWAY 29 FROM THE POST OFFICE
 JV1375'AT CLARKSVILLE, HOWARD COUNTY, 1.4 MILES NORTH OF THE ROAD
 JV1375'INTERSECTION AT HIGHLAND, 225 FEET NORTH OF A SMALL CONCRETE
 JV1375'BRIDGE, 50 FEET WEST-SOUTHWEST OF MILEAGE MARKER 185, AT THE
 JV1375'JUNCTION OF A NARROW GRAVEL ROAD LEADING WEST, 30 FEET WEST OF
 JV1375'THE CENTER LINE OF THE HIGHWAY, 13.5 FEET SOUTH OF THE CENTER
 JV1375'LINE OF THE GRAVEL ROAD, 4.3 FEET WEST OF A POWER-TRANSMISSION
 JV1375'LINE POLE, AND 1 FOOT SOUTH OF A WHITE WOODEN WITNESS POST.  A
 JV1375'STANDARD DISK, STAMPED H 87 1942 AND SET IN THE TOP OF A CONCRETE
 JV1375'POST.
 JV1375
 JV1375                          STATION RECOVERY (1965)
 JV1375
 JV1375'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965
 JV1375'RECOVERED IN GOOD CONDITION.
 JV1375
 JV1375                          STATION RECOVERY (2002)
 JV1375
 JV1375'RECOVERY NOTE BY HOBBS AND ASSOCIATES 2002 (FSH)
 JV1375'RECOVERED IN GOOD CONDITION.
 JV1375
 JV1375                          STATION RECOVERY (2006)
 JV1375
 JV1375'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV1375'STATION IS LOCATED 1.40 MILES NORTH ALONG RT 108, CLARKSVILLE PIKE,
 JV1375'FROM THE INTERSECTION OF RT 216 IN HIGHLAND.  GRAVEL ROAD MENTIONED IN
 JV1375'1942 DESCRIPTION IS NOW THE PAVED DRIVEWAY TO 3 HOMES NUMBERED 12698,
 JV1375'12702 AND 12740.  MARK IS 0.40 M EAST OF A WSSC CARSONITE WITNESS POST
 JV1375'AND 3.42 M NORTHWEST OF POWER POLE NUMBERED 79982.
 JV1375
 JV1375                          STATION RECOVERY (2007)
 JV1375
 JV1375'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV1375'THE STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) WEST OF SIMPSONVILLE, 1.4
 JV1375'MI (2.3 KM) NORTH-NORTHEAST OF HIGHLAND AND 0.7 MI (1.1 KM)
 JV1375'SOUTH-SOUTHWEST OF CLARKSVILLE.
 JV1375'
 JV1375'TO REACH FROM THE STATE HIGHWAY 108 BRIDGE OVER STATE HIGHWAY 32 IN
 JV1375'CLARKSVILLE, GO SOUTH ALONG STATE HIGHWAY 108 FOR 0.8 MI (1.3 KM) TO A
 JV1375'PAVED DRIVEWAY AND THE STATION ON THE RIGHT.
 JV1375'
 JV1375'IT IS ABOUT 225 FT (68.6 M) NORTH OF A SMALL CONCRETE BRIDGE, 13.5 FT
 JV1375'(4.1 M) SOUTH OF THE CENTERLINE OF THE DRIVEWAY, 30 FT (9.1 M) WEST OF
 JV1375'THE CENTERLINE OF THE HIGHWAY, 12.0 FT (3.7 M) WEST OF A POWER POLE
 JV1375'NUMBER 79982, 47.0 FT (14.3 M) WEST AND ACROSS THE HIGHWAY FROM POWER
 JV1375'POLE NUMBER 815512, 1.5 FT (0.5 M) EAST OF A FIBERGLASS WITNESS POST
 JV1375'AND SET IN THE TOP OF A 6-IN (15 CM) SQUARE CONCRETE POST ABOUT 3 FT
 JV1375'(0.9 M) HIGHER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2951 ***********************************************************************
 JV2951  DESIGNATION -  H 88
 JV2951  PID         -  JV2951
 JV2951  STATE/COUNTY-  MD/FREDERICK
 JV2951  COUNTRY     -  US
 JV2951  USGS QUAD   -  MIDDLETOWN (2016)
 JV2951
 JV2951                         *CURRENT SURVEY CONTROL
 JV2951  ______________________________________________________________________
 JV2951* NAD 83(1986) POSITION- 39 27 26.     (N) 077 34 38.     (W)   SCALED
 JV2951* NAVD 88 ORTHO HEIGHT -   155.208 (meters)      509.21  (feet) ADJUSTED
 JV2951  ______________________________________________________________________
 JV2951  GEOID HEIGHT    -        -33.210 (meters)                     GEOID18
 JV2951  DYNAMIC HEIGHT  -        155.122 (meters)      508.93  (feet) COMP
 JV2951  MODELED GRAVITY -    980,065.8   (mgal)                       NAVD 88
 JV2951
 JV2951  VERT ORDER      -  SECOND    CLASS 0
 JV2951
 JV2951.The horizontal coordinates were scaled from a map and have
 JV2951.an estimated accuracy of +/- 6 seconds.
 JV2951
 JV2951.The orthometric height was determined by differential leveling and
 JV2951.adjusted by the NATIONAL GEODETIC SURVEY
 JV2951.in June 1991.
 JV2951
 JV2951.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2951.GEOID18 height accuracy estimate available here.
 JV2951
 JV2951.Click photographs - Photos may exist for this station.
 JV2951
 JV2951.The dynamic height is computed by dividing the NAVD 88
 JV2951.geopotential number by the normal gravity value computed on the
 JV2951.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2951.degrees latitude (g = 980.6199 gals.).
 JV2951
 JV2951.The modeled gravity was interpolated from observed gravity values.
 JV2951
 JV2951;                    North         East    Units  Estimated Accuracy
 JV2951;SPC MD       -   198,920.      350,320.      MT  (+/- 180 meters Scaled)
 JV2951
 JV2951_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ782706(NAD 83)
 JV2951
 JV2951                          SUPERSEDED SURVEY CONTROL
 JV2951
 JV2951  NGVD 29 (11/26/84)  155.420  (m)          509.91   (f) ADJUSTED    2 0
 JV2951
 JV2951.Superseded values are not recommended for survey control.
 JV2951
 JV2951.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2951.See file dsdata.pdf to determine how the superseded data were derived.
 JV2951
 JV2951_MARKER: DB = BENCH MARK DISK
 JV2951_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2951_STAMPING: H 88 1942
 JV2951_MARK LOGO: CGS
 JV2951_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2951+STABILITY: SURFACE MOTION
 JV2951
 JV2951  HISTORY     - Date     Condition        Report By
 JV2951  HISTORY     - 1942     MONUMENTED       CGS
 JV2951
 JV2951                          STATION DESCRIPTION
 JV2951
 JV2951'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2951'2.1 MI W FROM MIDDLETOWN.
 JV2951'2.1 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION OF
 JV2951'STATE HIGHWAY 17 AT MIDDLETOWN, FREDERICK COUNTY, 50 FEET NORTH
 JV2951'ACROSS THE HIGHWAY FROM A CURVE SIGN, 24.8 FEET NORTHEAST OF THE
 JV2951'CENTER LINE OF THE HIGHWAY, 18 FEET WEST OF POLE 404, 8.9 FEET
 JV2951'WEST OF AN 18-INCH WALNUT TREE, AND 2.5 FEET SOUTHEAST OF A
 JV2951'WHITE WOODEN WITNESS POST.  A STANDARD DISK, STAMPED H 88 1942
 JV2951'AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3530 ***********************************************************************
 JV3530  DESIGNATION -  H 89
 JV3530  PID         -  JV3530
 JV3530  STATE/COUNTY-  MD/FREDERICK
 JV3530  COUNTRY     -  US
 JV3530  USGS QUAD   -  MYERSVILLE (2016)
 JV3530
 JV3530                         *CURRENT SURVEY CONTROL
 JV3530  ______________________________________________________________________
 JV3530* NAD 83(1986) POSITION- 39 32 22.0    (N) 077 31 50.9    (W)   HD_HELD2
 JV3530* NAVD 88 ORTHO HEIGHT -   221.421 (meters)      726.45  (feet) ADJUSTED
 JV3530  ______________________________________________________________________
 JV3530  GEOID HEIGHT    -        -33.148 (meters)                     GEOID18
 JV3530  DYNAMIC HEIGHT  -        221.298 (meters)      726.04  (feet) COMP
 JV3530  MODELED GRAVITY -    980,068.4   (mgal)                       NAVD 88
 JV3530
 JV3530  VERT ORDER      -  SECOND    CLASS 0
 JV3530
 JV3530.The horizontal coordinates were established by autonomous hand held GPS
 JV3530.observations and have an estimated accuracy of +/- 10 meters.
 JV3530
 JV3530.The orthometric height was determined by differential leveling and
 JV3530.adjusted by the NATIONAL GEODETIC SURVEY
 JV3530.in June 1991.
 JV3530
 JV3530.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3530.GEOID18 height accuracy estimate available here.
 JV3530
 JV3530.Click photographs - Photos may exist for this station.
 JV3530
 JV3530.The dynamic height is computed by dividing the NAVD 88
 JV3530.geopotential number by the normal gravity value computed on the
 JV3530.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3530.degrees latitude (g = 980.6199 gals.).
 JV3530
 JV3530.The modeled gravity was interpolated from observed gravity values.
 JV3530
 JV3530;                    North         East    Units  Estimated Accuracy
 JV3530;SPC MD       -   208,027.      354,369.      MT  (+/- 10 meters HH2 GPS)
 JV3530
 JV3530_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8251379701(NAD 83)
 JV3530
 JV3530                          SUPERSEDED SURVEY CONTROL
 JV3530
 JV3530  NGVD 29 (11/26/84)  221.626  (m)          727.12   (f) ADJUSTED    2 0
 JV3530
 JV3530.Superseded values are not recommended for survey control.
 JV3530
 JV3530.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3530.See file dsdata.pdf to determine how the superseded data were derived.
 JV3530
 JV3530_MARKER: DB = BENCH MARK DISK
 JV3530_SETTING: 80 = SET IN A BOULDER
 JV3530_STAMPING: H 89 1942
 JV3530_MARK LOGO: CGS
 JV3530_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3530+STABILITY: SURFACE MOTION
 JV3530
 JV3530  HISTORY     - Date     Condition        Report By
 JV3530  HISTORY     - 1942     MONUMENTED       CGS
 JV3530
 JV3530                          STATION DESCRIPTION
 JV3530
 JV3530'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3530'1.4 MI NE FROM ELLERTON.
 JV3530'1.4 MILES NORTHEAST ALONG STATE HIGHWAY 17 FROM THE STEEL BRIDGE
 JV3530'AT ELLERTON, FREDERICK COUNTY, 69.2 FEET NORTH OF HIGHWAY MARKER
 JV3530'223, 19.4 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 29.5
 JV3530'FEET SOUTH OF AN 8-INCH SYCAMORE TREE, 18 FEET NORTH OF A 6-INCH
 JV3530'SYCAMORE TREE, IN THE TOP OF A BOULDER, AND ABOUT 4-1/2 FEET
 JV3530'HIGHER THAN THE HIGHWAY.  A STANDARD DISK, STAMPED H 89 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0305 ***********************************************************************
 JV0305  DESIGNATION -  H 9
 JV0305  PID         -  JV0305
 JV0305  STATE/COUNTY-  MD/QUEEN ANNES
 JV0305  COUNTRY     -  US
 JV0305  USGS QUAD   -  CENTREVILLE (2017)
 JV0305
 JV0305                         *CURRENT SURVEY CONTROL
 JV0305  ______________________________________________________________________
 JV0305* NAD 83(1986) POSITION- 39 02 26.     (N) 076 04 22.     (W)   SCALED
 JV0305* NAVD 88 ORTHO HEIGHT -     1.382 (meters)        4.53  (feet) ADJUSTED
 JV0305  ______________________________________________________________________
 JV0305  GEOID HEIGHT    -        -33.819 (meters)                     GEOID18
 JV0305  DYNAMIC HEIGHT  -          1.381 (meters)        4.53  (feet) COMP
 JV0305  MODELED GRAVITY -    980,086.8   (mgal)                       NAVD 88
 JV0305
 JV0305  VERT ORDER      -  SECOND    CLASS 0
 JV0305
 JV0305.The horizontal coordinates were scaled from a map and have
 JV0305.an estimated accuracy of +/- 6 seconds.
 JV0305
 JV0305.The orthometric height was determined by differential leveling and
 JV0305.adjusted by the NATIONAL GEODETIC SURVEY
 JV0305.in June 1991.
 JV0305
 JV0305.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0305.GEOID18 height accuracy estimate available here.
 JV0305
 JV0305.Click photographs - Photos may exist for this station.
 JV0305
 JV0305.The dynamic height is computed by dividing the NAVD 88
 JV0305.geopotential number by the normal gravity value computed on the
 JV0305.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0305.degrees latitude (g = 980.6199 gals.).
 JV0305
 JV0305.The modeled gravity was interpolated from observed gravity values.
 JV0305
 JV0305;                    North         East    Units  Estimated Accuracy
 JV0305;SPC MD       -   152,920.      480,270.      MT  (+/- 180 meters Scaled)
 JV0305
 JV0305_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ071218(NAD 83)
 JV0305
 JV0305                          SUPERSEDED SURVEY CONTROL
 JV0305
 JV0305  NGVD 29 (11/26/84)    1.617  (m)            5.31   (f) ADJUSTED    2 0
 JV0305
 JV0305.Superseded values are not recommended for survey control.
 JV0305
 JV0305.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0305.See file dsdata.pdf to determine how the superseded data were derived.
 JV0305
 JV0305_MARKER: DB = BENCH MARK DISK
 JV0305_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0305_STAMPING: H 9 1935
 JV0305_MARK LOGO: CGS
 JV0305_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0305+STABILITY: SURFACE MOTION
 JV0305
 JV0305  HISTORY     - Date     Condition        Report By
 JV0305  HISTORY     - 1935     MONUMENTED       CGS
 JV0305  HISTORY     - 1971     MARK NOT FOUND   NGS
 JV0305
 JV0305                          STATION DESCRIPTION
 JV0305
 JV0305'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV0305'AT CENTREVILLE.
 JV0305'AT CENTREVILLE, QUEEN ANNES COUNTY, ABOUT 1/4 MILE WEST ALONG
 JV0305'U.S. HIGHWAY 213 FROM THE COURTHOUSE, AT THE Y-JUNCTION OF A
 JV0305'CONCRETE ROAD, 100 FEET NORTHEAST OF THE CENTERLINE OF THE
 JV0305'HIGHWAY, 20 FEET NORTHWEST OF THE CENTERLINE OF THE ROAD, 12.4
 JV0305'FEET EAST OF A POWER POLE, AND AT THE EAST CORNER OF A STORM-SEWER
 JV0305'INLET.  A STANDARD DISK, STAMPED H 9 1935 AND SET IN THE TOP OF A
 JV0305'CONCRETE POST FLUSH WITH THE CURB.  NOTE-- THE ROAD HAS BEEN
 JV0305'WIDENED.
 JV0305
 JV0305                          STATION RECOVERY (1971)
 JV0305
 JV0305'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0305'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1889 ***********************************************************************
 JV1889  DESIGNATION -  H 90
 JV1889  PID         -  JV1889
 JV1889  STATE/COUNTY-  MD/FREDERICK
 JV1889  COUNTRY     -  US
 JV1889  USGS QUAD   -  CATOCTIN FURNACE (2016)
 JV1889
 JV1889                         *CURRENT SURVEY CONTROL
 JV1889  ______________________________________________________________________
 JV1889* NAD 83(1986) POSITION- 39 35 41.     (N) 077 25 49.     (W)   SCALED
 JV1889* NAVD 88 ORTHO HEIGHT -   170.637 (meters)      559.83  (feet) ADJUSTED
 JV1889  ______________________________________________________________________
 JV1889  GEOID HEIGHT    -        -33.091 (meters)                     GEOID18
 JV1889  DYNAMIC HEIGHT  -        170.545 (meters)      559.53  (feet) COMP
 JV1889  MODELED GRAVITY -    980,087.8   (mgal)                       NAVD 88
 JV1889
 JV1889  VERT ORDER      -  SECOND    CLASS 0
 JV1889
 JV1889.The horizontal coordinates were scaled from a map and have
 JV1889.an estimated accuracy of +/- 6 seconds.
 JV1889
 JV1889.The orthometric height was determined by differential leveling and
 JV1889.adjusted by the NATIONAL GEODETIC SURVEY
 JV1889.in June 1991.
 JV1889
 JV1889.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1889.GEOID18 height accuracy estimate available here.
 JV1889
 JV1889.Click photographs - Photos may exist for this station.
 JV1889
 JV1889.The dynamic height is computed by dividing the NAVD 88
 JV1889.geopotential number by the normal gravity value computed on the
 JV1889.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1889.degrees latitude (g = 980.6199 gals.).
 JV1889
 JV1889.The modeled gravity was interpolated from observed gravity values.
 JV1889
 JV1889;                    North         East    Units  Estimated Accuracy
 JV1889;SPC MD       -   214,120.      363,040.      MT  (+/- 180 meters Scaled)
 JV1889
 JV1889_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ913855(NAD 83)
 JV1889
 JV1889                          SUPERSEDED SURVEY CONTROL
 JV1889
 JV1889  NGVD 29 (11/26/84)  170.838  (m)          560.49   (f) ADJUSTED    2 0
 JV1889
 JV1889.Superseded values are not recommended for survey control.
 JV1889
 JV1889.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1889.See file dsdata.pdf to determine how the superseded data were derived.
 JV1889
 JV1889_MARKER: DB = BENCH MARK DISK
 JV1889_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1889_STAMPING: H 90 1942
 JV1889_MARK LOGO: CGS
 JV1889_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1889+STABILITY: SURFACE MOTION
 JV1889
 JV1889  HISTORY     - Date     Condition        Report By
 JV1889  HISTORY     - 1942     MONUMENTED       CGS
 JV1889  HISTORY     - 1990     MARK NOT FOUND   USPSQD
 JV1889
 JV1889                          STATION DESCRIPTION
 JV1889
 JV1889'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1889'1 MI N FROM CATOCTIN.
 JV1889'1.0 MILE NORTH ALONG U.S. HIGHWAY 15 FROM THE T-JUNCTION OF A DIRT
 JV1889'ROAD LEADING WEST AT CATOCTIN, FREDERICK COUNTY, 90 FEET EAST
 JV1889'ACROSS THE HIGHWAY FROM THE NORTHEAST CORNER OF A ONE-STORY YELLOW
 JV1889'HOUSE, 34 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 14.5 FEET
 JV1889'SOUTHEAST OF A 20-INCH OAK TREE, 2 FEET SOUTH OF A WHITE WOODEN
 JV1889'WITNESS POST, AND LEVEL WITH THE HIGHWAY.  A STANDARD DISK,
 JV1889'STAMPED H 90 1942 AND SET IN THE TOP OF A CONCRETE POST.
 JV1889
 JV1889                          STATION RECOVERY (1990)
 JV1889
 JV1889'RECOVERY NOTE BY US POWER SQUADRON 1990 (NH)
 JV1889'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2371 ***********************************************************************
 JV2371  DESIGNATION -  H 91
 JV2371  PID         -  JV2371
 JV2371  STATE/COUNTY-  MD/FREDERICK
 JV2371  COUNTRY     -  US
 JV2371  USGS QUAD   -  URBANA (2016)
 JV2371
 JV2371                         *CURRENT SURVEY CONTROL
 JV2371  ______________________________________________________________________
 JV2371* NAD 83(1986) POSITION- 39 18 36.     (N) 077 17 52.     (W)   SCALED
 JV2371* NAVD 88 ORTHO HEIGHT -   115.824 (meters)      380.00  (feet) ADJUSTED
 JV2371  ______________________________________________________________________
 JV2371  GEOID HEIGHT    -        -32.130 (meters)                     GEOID18
 JV2371  DYNAMIC HEIGHT  -        115.763 (meters)      379.80  (feet) COMP
 JV2371  MODELED GRAVITY -    980,103.2   (mgal)                       NAVD 88
 JV2371
 JV2371  VERT ORDER      -  SECOND    CLASS I
 JV2371
 JV2371.The horizontal coordinates were scaled from a map and have
 JV2371.an estimated accuracy of +/- 6 seconds.
 JV2371
 JV2371.The orthometric height was determined by differential leveling and
 JV2371.adjusted by the NATIONAL GEODETIC SURVEY
 JV2371.in June 1991.
 JV2371
 JV2371.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2371.GEOID18 height accuracy estimate available here.
 JV2371
 JV2371.Click photographs - Photos may exist for this station.
 JV2371
 JV2371.The dynamic height is computed by dividing the NAVD 88
 JV2371.geopotential number by the normal gravity value computed on the
 JV2371.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2371.degrees latitude (g = 980.6199 gals.).
 JV2371
 JV2371.The modeled gravity was interpolated from observed gravity values.
 JV2371
 JV2371;                    North         East    Units  Estimated Accuracy
 JV2371;SPC MD       -   182,460.      374,320.      MT  (+/- 180 meters Scaled)
 JV2371
 JV2371_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ018536(NAD 83)
 JV2371
 JV2371                          SUPERSEDED SURVEY CONTROL
 JV2371
 JV2371  NGVD 29 (11/26/84)  116.027  (m)          380.67   (f) ADJUSTED    2 0
 JV2371
 JV2371.Superseded values are not recommended for survey control.
 JV2371
 JV2371.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2371.See file dsdata.pdf to determine how the superseded data were derived.
 JV2371
 JV2371_MARKER: DB = BENCH MARK DISK
 JV2371_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2371_SP_SET: BRIDGE WALL
 JV2371_STAMPING: H 91 1942
 JV2371_MARK LOGO: CGS
 JV2371_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2371_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2371_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2371+SATELLITE: SATELLITE OBSERVATIONS - June 15, 2001
 JV2371
 JV2371  HISTORY     - Date     Condition        Report By
 JV2371  HISTORY     - 1942     MONUMENTED       CGS
 JV2371  HISTORY     - 1972     GOOD             NGS
 JV2371  HISTORY     - 20010615 GOOD             MDSHA
 JV2371
 JV2371                          STATION DESCRIPTION
 JV2371
 JV2371'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV2371'AT GREEN VALLEY.
 JV2371'AT GREEN VALLEY, FREDERICK COUNTY, AT THE NORTH BRIDGE, IN THE
 JV2371'TOP OF THE NORTH END OF THE EAST GUARDRAIL, 14.8 FEET EAST OF THE
 JV2371'CENTER LINE OF THE ROAD, 2 FEET SOUTH OF THE NORTH END OF THE
 JV2371'GUARDRAIL, AND ABOUT 4 FEET HIGHER THAN THE ROAD.  A STANDARD
 JV2371'DISK, STAMPED H 91 1942.
 JV2371
 JV2371                          STATION RECOVERY (1972)
 JV2371
 JV2371'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972
 JV2371'RECOVERED IN GOOD CONDITION.
 JV2371
 JV2371                          STATION RECOVERY (2001)
 JV2371
 JV2371'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 JV2371'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0773 ***********************************************************************
 JV0773  DESIGNATION -  H 92
 JV0773  PID         -  JV0773
 JV0773  STATE/COUNTY-  MD/BALTIMORE
 JV0773  COUNTRY     -  US
 JV0773  USGS QUAD   -  ELLICOTT CITY (2016)
 JV0773
 JV0773                         *CURRENT SURVEY CONTROL
 JV0773  ______________________________________________________________________
 JV0773* NAD 83(1986) POSITION- 39 20 43.7    (N) 076 49 03.1    (W)   HD_HELD2
 JV0773* NAVD 88 ORTHO HEIGHT -   102.998 (meters)      337.92  (feet) ADJUSTED
 JV0773  ______________________________________________________________________
 JV0773  GEOID HEIGHT    -        -32.146 (meters)                     GEOID18
 JV0773  DYNAMIC HEIGHT  -        102.944 (meters)      337.74  (feet) COMP
 JV0773  MODELED GRAVITY -    980,100.6   (mgal)                       NAVD 88
 JV0773
 JV0773  VERT ORDER      -  SECOND    CLASS 0
 JV0773
 JV0773.The horizontal coordinates were established by autonomous hand held GPS
 JV0773.observations and have an estimated accuracy of +/- 10 meters.
 JV0773
 JV0773.The orthometric height was determined by differential leveling and
 JV0773.adjusted by the NATIONAL GEODETIC SURVEY
 JV0773.in June 1991.
 JV0773
 JV0773.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0773.GEOID18 height accuracy estimate available here.
 JV0773
 JV0773.Click photographs - Photos may exist for this station.
 JV0773
 JV0773.The dynamic height is computed by dividing the NAVD 88
 JV0773.geopotential number by the normal gravity value computed on the
 JV0773.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0773.degrees latitude (g = 980.6199 gals.).
 JV0773
 JV0773.The modeled gravity was interpolated from observed gravity values.
 JV0773
 JV0773;                    North         East    Units  Estimated Accuracy
 JV0773;SPC MD       -   186,374.      415,729.      MT  (+/- 10 meters HH2 GPS)
 JV0773
 JV0773_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4338056690(NAD 83)
 JV0773
 JV0773                          SUPERSEDED SURVEY CONTROL
 JV0773
 JV0773  NGVD 29 (11/26/84)  103.216  (m)          338.63   (f) ADJUSTED    2 0
 JV0773
 JV0773.Superseded values are not recommended for survey control.
 JV0773
 JV0773.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0773.See file dsdata.pdf to determine how the superseded data were derived.
 JV0773
 JV0773_MARKER: DB = BENCH MARK DISK
 JV0773_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0773_SP_SET: BRIDGE
 JV0773_STAMPING: H 92 1942
 JV0773_MARK LOGO: CGS
 JV0773_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0773
 JV0773  HISTORY     - Date     Condition        Report By
 JV0773  HISTORY     - 1942     MONUMENTED       CGS
 JV0773  HISTORY     - 1967     GOOD             CGS
 JV0773
 JV0773                          STATION DESCRIPTION
 JV0773
 JV0773'DESCRIBED BY COAST AND GEODETIC SURVEY 1967
 JV0773'2.5 MI SW FROM RANDALLSTOWN.
 JV0773'2.5 MILES SOUTHWEST ALONG STATE HIGHWAY 125 FROM THE INTERSECTION
 JV0773'OF STATE HIGHWAY 26 AT RANDALLSTOWN, BALTIMORE COUNTY, IN THE
 JV0773'NORTHWEST WING WALL OF A BRIDGE, 14 FEET NORTHWEST OF THE CENTER
 JV0773'LINE OF THE HIGHWAY, AND 7 FEET SOUTH OF A POWER-TRANSMISSION
 JV0773'LINE POLE.  A STANDARD DISK, STAMPED H 92 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0461 ***********************************************************************
 JV0461  DESIGNATION -  H 93
 JV0461  PID         -  JV0461
 JV0461  STATE/COUNTY-  MD/HARFORD
 JV0461  COUNTRY     -  US
 JV0461  USGS QUAD   -  PERRYMAN (2016)
 JV0461
 JV0461                         *CURRENT SURVEY CONTROL
 JV0461  ______________________________________________________________________
 JV0461* NAD 83(1986) POSITION- 39 26 02.     (N) 076 10 50.     (W)   SCALED
 JV0461* NAVD 88 ORTHO HEIGHT -     8.040 (meters)       26.38  (feet) ADJUSTED
 JV0461  ______________________________________________________________________
 JV0461  GEOID HEIGHT    -        -33.246 (meters)                     GEOID18
 JV0461  DYNAMIC HEIGHT  -          8.035 (meters)       26.36  (feet) COMP
 JV0461  MODELED GRAVITY -    980,115.9   (mgal)                       NAVD 88
 JV0461
 JV0461  VERT ORDER      -  SECOND    CLASS 0
 JV0461
 JV0461.The horizontal coordinates were scaled from a map and have
 JV0461.an estimated accuracy of +/- 6 seconds.
 JV0461
 JV0461.The orthometric height was determined by differential leveling and
 JV0461.adjusted by the NATIONAL GEODETIC SURVEY
 JV0461.in June 1991.
 JV0461
 JV0461.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0461.GEOID18 height accuracy estimate available here.
 JV0461
 JV0461.Click photographs - Photos may exist for this station.
 JV0461
 JV0461.The dynamic height is computed by dividing the NAVD 88
 JV0461.geopotential number by the normal gravity value computed on the
 JV0461.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0461.degrees latitude (g = 980.6199 gals.).
 JV0461
 JV0461.The modeled gravity was interpolated from observed gravity values.
 JV0461
 JV0461;                    North         East    Units  Estimated Accuracy
 JV0461;SPC MD       -   196,490.      470,550.      MT  (+/- 180 meters Scaled)
 JV0461
 JV0461_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ983655(NAD 83)
 JV0461
 JV0461                          SUPERSEDED SURVEY CONTROL
 JV0461
 JV0461  NGVD 29 (11/26/84)    8.321  (m)           27.30   (f) ADJUSTED    2 0
 JV0461
 JV0461.Superseded values are not recommended for survey control.
 JV0461
 JV0461.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0461.See file dsdata.pdf to determine how the superseded data were derived.
 JV0461
 JV0461_MARKER: DB = BENCH MARK DISK
 JV0461_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0461_SP_SET: GUARD RAIL
 JV0461_STAMPING: H 93 1942
 JV0461_MARK LOGO: CGS
 JV0461_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0461
 JV0461  HISTORY     - Date     Condition        Report By
 JV0461  HISTORY     - 1942     MONUMENTED       CGS
 JV0461
 JV0461                          STATION DESCRIPTION
 JV0461
 JV0461'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV0461'AT MICHAELSVILLE.
 JV0461'AT MICHAELSVILLE, HARFORD COUNTY, AT A 40-FOOT BRIDGE ON THE
 JV0461'PERRYMAN-COLE ROAD, IN THE TOP OF THE EAST END OF THE NORTH
 JV0461'GUARD RAIL, 13.8 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY,
 JV0461'AND ABOUT 4 FEET HIGHER THAN THE HIGHWAY.  A STANDARD DISK,
 JV0461'STAMPED H 93 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0174 ***********************************************************************
 JV0174  DESIGNATION -  H 96
 JV0174  PID         -  JV0174
 JV0174  STATE/COUNTY-  MD/CECIL
 JV0174  COUNTRY     -  US
 JV0174  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0174
 JV0174                         *CURRENT SURVEY CONTROL
 JV0174  ______________________________________________________________________
 JV0174* NAD 83(1986) POSITION- 39 35 12.     (N) 076 02 09.     (W)   SCALED
 JV0174* NAVD 88 ORTHO HEIGHT -    46.212 (meters)      151.61  (feet) ADJUSTED
 JV0174  ______________________________________________________________________
 JV0174  GEOID HEIGHT    -        -33.131 (meters)                     GEOID18
 JV0174  DYNAMIC HEIGHT  -         46.189 (meters)      151.54  (feet) COMP
 JV0174  MODELED GRAVITY -    980,126.1   (mgal)                       NAVD 88
 JV0174
 JV0174  VERT ORDER      -  SECOND    CLASS 0
 JV0174
 JV0174.The horizontal coordinates were scaled from a map and have
 JV0174.an estimated accuracy of +/- 6 seconds.
 JV0174
 JV0174.The orthometric height was determined by differential leveling and
 JV0174.adjusted by the NATIONAL GEODETIC SURVEY
 JV0174.in June 1991.
 JV0174
 JV0174.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0174.GEOID18 height accuracy estimate available here.
 JV0174
 JV0174.Click photographs - Photos may exist for this station.
 JV0174
 JV0174.The dynamic height is computed by dividing the NAVD 88
 JV0174.geopotential number by the normal gravity value computed on the
 JV0174.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0174.degrees latitude (g = 980.6199 gals.).
 JV0174
 JV0174.The modeled gravity was interpolated from observed gravity values.
 JV0174
 JV0174;                    North         East    Units  Estimated Accuracy
 JV0174;SPC MD       -   213,580.      482,830.      MT  (+/- 180 meters Scaled)
 JV0174
 JV0174_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ110823(NAD 83)
 JV0174
 JV0174                          SUPERSEDED SURVEY CONTROL
 JV0174
 JV0174  NGVD 29 (11/26/84)   46.511  (m)          152.59   (f) ADJUSTED    2 0
 JV0174
 JV0174.Superseded values are not recommended for survey control.
 JV0174
 JV0174.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0174.See file dsdata.pdf to determine how the superseded data were derived.
 JV0174
 JV0174_MARKER: DB = BENCH MARK DISK
 JV0174_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0174_SP_SET: PIER
 JV0174_STAMPING: H 96 1959
 JV0174_MARK LOGO: CGS
 JV0174_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0174
 JV0174  HISTORY     - Date     Condition        Report By
 JV0174  HISTORY     - 1959     MONUMENTED       CGS
 JV0174  HISTORY     - 19901113 GOOD             USPSQD
 JV0174  HISTORY     - 20120210 MARK NOT FOUND   MD-015
 JV0174
 JV0174                          STATION DESCRIPTION
 JV0174
 JV0174'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0174'2.1 MI NE FROM AIKIN.
 JV0174'ABOUT 2.1 MILES NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0174'FROM THE STATION AT AIKIN, AT AN OVERHEAD BRIDGE, SET VERTICALLY
 JV0174'IN THE SOUTH CONCRETE FACE OF THE NORTH CONCRETE PIER, 0.4 MILE
 JV0174'NORTHEAST OF AN ASPHALT ROAD CROSSING AT JACKSON, 9 FEET NORTH
 JV0174'OF THE NORTH RAIL, 3.5 FEET SOUTHWEST OF THE NORTHEAST END OF THE
 JV0174'PIER AND 3.5 FEET ABOVE THE LEVEL OF THE GROUND.
 JV0174
 JV0174                          STATION RECOVERY (1990)
 JV0174
 JV0174'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0174'RECOVERED IN GOOD CONDITION.
 JV0174
 JV0174                          STATION RECOVERY (2012)
 JV0174
 JV0174'RECOVERY NOTE BY CECIL COUNTY MARYLAND 2012 (DRB)
 JV0174'THE MARK IS ASSUMED DESTROYED AS A RESULT OF THE NEW WINCH ROAD
 JV0174'BRIDGE'S INSTALLATION IN 2010.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0175 ***********************************************************************
 JV0175  DESIGNATION -  H 97
 JV0175  PID         -  JV0175
 JV0175  STATE/COUNTY-  MD/CECIL
 JV0175  COUNTRY     -  US
 JV0175  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV0175
 JV0175                         *CURRENT SURVEY CONTROL
 JV0175  ______________________________________________________________________
 JV0175* NAD 83(1986) POSITION- 39 34 58.     (N) 076 02 29.     (W)   SCALED
 JV0175* NAVD 88 ORTHO HEIGHT -    44.950 (meters)      147.47  (feet) ADJUSTED
 JV0175  ______________________________________________________________________
 JV0175  GEOID HEIGHT    -        -33.134 (meters)                     GEOID18
 JV0175  DYNAMIC HEIGHT  -         44.928 (meters)      147.40  (feet) COMP
 JV0175  MODELED GRAVITY -    980,125.9   (mgal)                       NAVD 88
 JV0175
 JV0175  VERT ORDER      -  SECOND    CLASS 0
 JV0175
 JV0175.The horizontal coordinates were scaled from a map and have
 JV0175.an estimated accuracy of +/- 6 seconds.
 JV0175
 JV0175.The orthometric height was determined by differential leveling and
 JV0175.adjusted by the NATIONAL GEODETIC SURVEY
 JV0175.in June 1991.
 JV0175
 JV0175.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0175.GEOID18 height accuracy estimate available here.
 JV0175
 JV0175.Click photographs - Photos may exist for this station.
 JV0175
 JV0175.The dynamic height is computed by dividing the NAVD 88
 JV0175.geopotential number by the normal gravity value computed on the
 JV0175.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0175.degrees latitude (g = 980.6199 gals.).
 JV0175
 JV0175.The modeled gravity was interpolated from observed gravity values.
 JV0175
 JV0175;                    North         East    Units  Estimated Accuracy
 JV0175;SPC MD       -   213,140.      482,360.      MT  (+/- 180 meters Scaled)
 JV0175
 JV0175_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ105819(NAD 83)
 JV0175
 JV0175                          SUPERSEDED SURVEY CONTROL
 JV0175
 JV0175  NGVD 29 (11/26/84)   45.245  (m)          148.44   (f) ADJUSTED    2 0
 JV0175
 JV0175.Superseded values are not recommended for survey control.
 JV0175
 JV0175.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0175.See file dsdata.pdf to determine how the superseded data were derived.
 JV0175
 JV0175_MARKER: DB = BENCH MARK DISK
 JV0175_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV0175+WITH SETTING: PAVEMENT
 JV0175_SP_SET: SIGNAL FOUNDATION
 JV0175_STAMPING: H 97 1959
 JV0175_MARK LOGO: CGS
 JV0175_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0175+STABILITY: SURFACE MOTION
 JV0175
 JV0175  HISTORY     - Date     Condition        Report By
 JV0175  HISTORY     - 1959     MONUMENTED       CGS
 JV0175  HISTORY     - 19901113 GOOD             USPSQD
 JV0175
 JV0175                          STATION DESCRIPTION
 JV0175
 JV0175'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV0175'1.7 MI NE FROM AIKIN.
 JV0175'ABOUT 1.7 MILES NORTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD
 JV0175'FROM THE STATION AT AIKIN, AT THE ROAD CROSSING AT JACKSON, ON
 JV0175'TOP OF THE CONCRETE FOUNDATION FOR A SIGNAL, 10.8 FEET NORTHWEST
 JV0175'OF THE NORTHWEST RAIL, 62 FEET NORTHEAST OF THE CENTER LINE OF
 JV0175'ROAD, ABOUT LEVEL WITH THE TRACK AND 2 1/2 FEET ABOVE THE GROUND.
 JV0175
 JV0175                          STATION RECOVERY (1990)
 JV0175
 JV0175'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0175'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0849 ***********************************************************************
 JV0849  DESIGNATION -  H 98
 JV0849  PID         -  JV0849
 JV0849  STATE/COUNTY-  MD/BALTIMORE
 JV0849  COUNTRY     -  US
 JV0849  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0849
 JV0849                         *CURRENT SURVEY CONTROL
 JV0849  ______________________________________________________________________
 JV0849* NAD 83(1986) POSITION- 39 17 56.61   (N) 076 44 09.44   (W)   HD_HELD1
 JV0849* NAVD 88 ORTHO HEIGHT -   137.376 (meters)      450.71  (feet) ADJUSTED
 JV0849  ______________________________________________________________________
 JV0849  GEOID HEIGHT    -        -32.314 (meters)                     GEOID18
 JV0849  DYNAMIC HEIGHT  -        137.304 (meters)      450.47  (feet) COMP
 JV0849  MODELED GRAVITY -    980,102.1   (mgal)                       NAVD 88
 JV0849
 JV0849  VERT ORDER      -  SECOND    CLASS 0
 JV0849
 JV0849.The horizontal coordinates were determined by differentially corrected
 JV0849.hand held GPS observations or other comparable positioning techniques
 JV0849.and have an estimated accuracy of +/- 3 meters.
 JV0849
 JV0849.The orthometric height was determined by differential leveling and
 JV0849.adjusted by the NATIONAL GEODETIC SURVEY
 JV0849.in June 1991.
 JV0849
 JV0849.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0849.GEOID18 height accuracy estimate available here.
 JV0849
 JV0849.Click photographs - Photos may exist for this station.
 JV0849
 JV0849.The dynamic height is computed by dividing the NAVD 88
 JV0849.geopotential number by the normal gravity value computed on the
 JV0849.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0849.degrees latitude (g = 980.6199 gals.).
 JV0849
 JV0849.The modeled gravity was interpolated from observed gravity values.
 JV0849
 JV0849;                    North         East    Units  Estimated Accuracy
 JV0849;SPC MD       -   181,238.9     422,776.1     MT  (+/- 3 meters HH1 GPS) 
 JV0849
 JV0849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5031051400(NAD 83)
 JV0849
 JV0849                          SUPERSEDED SURVEY CONTROL
 JV0849
 JV0849  NGVD 29 (11/26/84)  137.595  (m)          451.43   (f) ADJUSTED    2 0
 JV0849
 JV0849.Superseded values are not recommended for survey control.
 JV0849
 JV0849.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0849.See file dsdata.pdf to determine how the superseded data were derived.
 JV0849
 JV0849_MARKER: DB = BENCH MARK DISK
 JV0849_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0849_SP_SET: BUILDING
 JV0849_STAMPING: H 98 1960
 JV0849_MARK LOGO: CGS
 JV0849_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0849_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0849+SATELLITE: SATELLITE OBSERVATIONS - September 21, 2003
 JV0849
 JV0849  HISTORY     - Date     Condition        Report By
 JV0849  HISTORY     - 1960     MONUMENTED       CGS
 JV0849  HISTORY     - 1966     GOOD             CGS
 JV0849  HISTORY     - 20030921 GOOD             USPSQD
 JV0849
 JV0849                          STATION DESCRIPTION
 JV0849
 JV0849'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0849'3 MI N FROM CATONSVILLE.
 JV0849'0.6 MILE EAST ALONG FREDERICK ROAD FROM THE POST OFFICE AT
 JV0849'CATONSVILLE, THENCE ABOUT 1.15 MILES NORTHWEST ALONG BALTIMORE
 JV0849'COUNTY BELTWAY (INTERSTATE HIGHWAY 695), THENCE ABOUT 0.45 MILE
 JV0849'EAST ALONG U.S. HIGHWAY 40, THENCE ABOUT 0.85 MILE NORTH AND
 JV0849'NORTHWEST ALONG INGLESIDE AVENUE AND JOHNNYCAKE ROAD, SET
 JV0849'VERTICALLY IN THE SOUTHWEST BRICK FACE OF JOHNNYCAKE JUNIOR HIGH
 JV0849'SCHOOL (UNDER CONSTRUCTION IN 1960), 1 FOOT NORTHWEST OF SOUTH
 JV0849'CORNER OF BUILDING AND ABOUT 3 FEET ABOVE GROUND.
 JV0849
 JV0849                          STATION RECOVERY (1966)
 JV0849
 JV0849'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV0849'RECOVERED IN GOOD CONDITION.
 JV0849
 JV0849                          STATION RECOVERY (2003)
 JV0849
 JV0849'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0849'RECOVERED IN GOOD CONDITION.  NOTE-- THE SCHOOL IS ON THE EAST SIDE OF
 JV0849'JOHNNYCAKE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0456 ***********************************************************************
 JV0456  DESIGNATION -  H 99
 JV0456  PID         -  JV0456
 JV0456  STATE/COUNTY-  MD/BALTIMORE
 JV0456  COUNTRY     -  US
 JV0456  USGS QUAD   -  WHITE MARSH (2016)
 JV0456
 JV0456                         *CURRENT SURVEY CONTROL
 JV0456  ______________________________________________________________________
 JV0456* NAD 83(1986) POSITION- 39 28 11.     (N) 076 26 22.     (W)   SCALED
 JV0456* NAVD 88 ORTHO HEIGHT -   113.197 (meters)      371.38  (feet) ADJUSTED
 JV0456  ______________________________________________________________________
 JV0456  GEOID HEIGHT    -        -32.758 (meters)                     GEOID18
 JV0456  DYNAMIC HEIGHT  -        113.138 (meters)      371.19  (feet) COMP
 JV0456  MODELED GRAVITY -    980,105.4   (mgal)                       NAVD 88
 JV0456
 JV0456  VERT ORDER      -  SECOND    CLASS 0
 JV0456
 JV0456.The horizontal coordinates were scaled from a map and have
 JV0456.an estimated accuracy of +/- 6 seconds.
 JV0456
 JV0456.The orthometric height was determined by differential leveling and
 JV0456.adjusted by the NATIONAL GEODETIC SURVEY
 JV0456.in June 1991.
 JV0456
 JV0456.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0456.GEOID18 height accuracy estimate available here.
 JV0456
 JV0456.Click photographs - Photos may exist for this station.
 JV0456
 JV0456.The dynamic height is computed by dividing the NAVD 88
 JV0456.geopotential number by the normal gravity value computed on the
 JV0456.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0456.degrees latitude (g = 980.6199 gals.).
 JV0456
 JV0456.The modeled gravity was interpolated from observed gravity values.
 JV0456
 JV0456;                    North         East    Units  Estimated Accuracy
 JV0456;SPC MD       -   200,300.      448,240.      MT  (+/- 180 meters Scaled)
 JV0456
 JV0456_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ761698(NAD 83)
 JV0456
 JV0456                          SUPERSEDED SURVEY CONTROL
 JV0456
 JV0456  NGVD 29 (11/26/84)  113.444  (m)          372.19   (f) ADJUSTED    2 0
 JV0456
 JV0456.Superseded values are not recommended for survey control.
 JV0456
 JV0456.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0456.See file dsdata.pdf to determine how the superseded data were derived.
 JV0456
 JV0456_MARKER: DB = BENCH MARK DISK
 JV0456_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV0456_SP_SET: CURB
 JV0456_STAMPING: H 99 1960
 JV0456_MARK LOGO: CGS
 JV0456_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0456_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0456
 JV0456  HISTORY     - Date     Condition        Report By
 JV0456  HISTORY     - 1960     MONUMENTED       CGS
 JV0456  HISTORY     - 1990     GOOD             USPSQD
 JV0456  HISTORY     - 19950621 MARK NOT FOUND   USPSQD
 JV0456  HISTORY     - 19960201 GOOD             MCCRON
 JV0456  HISTORY     - 20090930 MARK NOT FOUND   MD-005
 JV0456
 JV0456                          STATION DESCRIPTION
 JV0456
 JV0456'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0456'0.2 MI NE FROM FORK.
 JV0456'ABOUT 0.15 MILE NORTHEAST ALONG STATE HIGHWAY 147 (HARFORD
 JV0456'ROAD) FROM THE CROSSROAD AT FORK, 19 1/2 FEET SOUTHEAST OF
 JV0456'THE CENTER LINE OF THE HIGHWAY, IN TOP OF THE NORTHEAST END OF
 JV0456'THE SOUTHEAST CURBING OF A 3-FOOT CONCRETE BOX CULVERT UNDER
 JV0456'THE HIGHWAY, 1/2 FOOT SOUTHWEST OF THE NORTHEAST END OF THE
 JV0456'CURBING, AND ABOUT 1/2 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
 JV0456
 JV0456                          STATION RECOVERY (1990)
 JV0456
 JV0456'RECOVERY NOTE BY US POWER SQUADRON 1990 (RDB)
 JV0456'RECOVERED IN GOOD CONDITION.
 JV0456
 JV0456                          STATION RECOVERY (1995)
 JV0456
 JV0456'RECOVERY NOTE BY US POWER SQUADRON 1995
 JV0456'MARK NOT FOUND.
 JV0456
 JV0456                          STATION RECOVERY (1996)
 JV0456
 JV0456'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 JV0456'RECOVERED AS DESCRIBED.
 JV0456
 JV0456                          STATION RECOVERY (2009)
 JV0456
 JV0456'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (PAS)
 JV0456'ATTEMPTED RECOVERY BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN
 JV0456'2009 (PAS). THE CONCRETE CULVERT HAS BEEN REPLACED HAS CAUSED THE
 JV0456'STATION TO BE LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4942 ***********************************************************************
 JV4942  DESIGNATION -  H TOWER
 JV4942  PID         -  JV4942
 JV4942  STATE/COUNTY-  MD/HARFORD
 JV4942  COUNTRY     -  US
 JV4942  USGS QUAD   -  PERRYMAN (2016)
 JV4942
 JV4942                         *CURRENT SURVEY CONTROL
 JV4942  ______________________________________________________________________
 JV4942* NAD 83(1991) POSITION- 39 24 33.68682(N) 076 08 19.85749(W)   ADJUSTED
 JV4942* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV4942  ______________________________________________________________________
 JV4942  GEOID HEIGHT    -        -33.305 (meters)                     GEOID18
 JV4942  LAPLACE CORR    -         -1.35  (seconds)                    DEFLEC18
 JV4942  HORZ ORDER      -  THIRD
 JV4942
 JV4942.The horizontal coordinates were established by classical geodetic methods
 JV4942.and adjusted by the National Geodetic Survey in January 1992.
 JV4942
 JV4942.The orthometric height was scaled from a topographic map.
 JV4942
 JV4942.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4942.GEOID18 height accuracy estimate available here.
 JV4942
 JV4942.Click photographs - Photos may exist for this station.
 JV4942
 JV4942.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4942
 JV4942. The following values were computed from the NAD 83(1991) position.
 JV4942
 JV4942;                    North         East     Units Scale Factor Converg.
 JV4942;SPC MD       -   193,801.200   474,165.024   MT  0.99999314   +0 32 25.8
 JV4942;SPC MD       -   635,829.44  1,555,656.42   sFT  0.99999314   +0 32 25.8
 JV4942;UTM  18      - 4,362,823.674   401,954.532   MT  0.99971836   -0 43 23.0
 JV4942
 JV4942!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4942!SPC MD       -   1.00000527  x   0.99999314  =   0.99999841
 JV4942!UTM  18      -   1.00000527  x   0.99971836  =   0.99972362
 JV4942
 JV4942:                Primary Azimuth Mark                     Grid Az
 JV4942:SPC MD       -  L TOWER OLD                              231 27 01.5
 JV4942:UTM  18      -  L TOWER OLD                              232 42 50.3
 JV4942
 JV4942_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0195462823(NAD 83)
 JV4942
 JV4942|---------------------------------------------------------------------|
 JV4942| PID    Reference Object                     Distance      Geod. Az  |
 JV4942|                                                           dddmmss.s |
 JV4942| JV4934 L TOWER OLD                         APPROX. 5.3 KM 2315927.3 |
 JV4942|---------------------------------------------------------------------|
 JV4942
 JV4942                          SUPERSEDED SURVEY CONTROL
 JV4942
 JV4942  NAD 83(1986)-  39 24 33.67998(N)    076 08 19.86388(W) AD(       ) 3
 JV4942  NAD 27      -  39 24 33.29600(N)    076 08 21.03300(W) AD(       ) 3
 JV4942  USSD        -  39 24 33.66600(N)    076 08 20.89400(W) AD(       ) 3
 JV4942
 JV4942.Superseded values are not recommended for survey control.
 JV4942
 JV4942.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4942.See file dsdata.pdf to determine how the superseded data were derived.
 JV4942
 JV4942
 JV4942  HISTORY     - Date     Condition        Report By
 JV4942  HISTORY     - 1918     FIRST OBSERVED   CGS
 JV4942
 JV4942                          STATION DESCRIPTION
 JV4942
 JV4942'DESCRIBED BY COAST AND GEODETIC SURVEY 1918 (JAB)
 JV4942'ON WESTERN SIDE OF CHESAPEAKE BAY, ON ROOF OF HOUSE AT STONY
 JV4942'POINT.  STATION MARKED BY BASE OF SIGNAL POLE IN SOUTHEASTERN CORNER
 JV4942'OF RAILING AROUND OBSERVING TOWER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4405 ***********************************************************************
 JU4405  DESIGNATION -  HABERSACK
 JU4405  PID         -  JU4405
 JU4405  STATE/COUNTY-  MD/KENT
 JU4405  COUNTRY     -  US
 JU4405  USGS QUAD   -  MILLINGTON (2016)
 JU4405
 JU4405                         *CURRENT SURVEY CONTROL
 JU4405  ______________________________________________________________________
 JU4405* NAD 83(2011) POSITION- 39 19 55.34413(N) 075 49 34.83104(W)   ADJUSTED
 JU4405* NAD 83(2011) ELLIP HT-   -16.993 (meters)        (06/27/12)   ADJUSTED
 JU4405* NAD 83(2011) EPOCH   -  2010.00
 JU4405* NAVD 88 ORTHO HEIGHT -    16.589 (meters)       54.43  (feet) ADJUSTED
 JU4405  ______________________________________________________________________
 JU4405  GEOID HEIGHT    -        -33.588 (meters)                     GEOID18
 JU4405  NAD 83(2011) X  -  1,209,624.627 (meters)                     COMP
 JU4405  NAD 83(2011) Y  - -4,789,648.564 (meters)                     COMP
 JU4405  NAD 83(2011) Z  -  4,020,886.521 (meters)                     COMP
 JU4405  LAPLACE CORR    -         -1.52  (seconds)                    DEFLEC18
 JU4405  DYNAMIC HEIGHT  -         16.581 (meters)       54.40  (feet) COMP
 JU4405  MODELED GRAVITY -    980,110.7   (mgal)                       NAVD 88
 JU4405
 JU4405  VERT ORDER      -  SECOND    CLASS I
 JU4405
 JU4405  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JU4405  Standards:
 JU4405         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JU4405            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JU4405  -------------------------------------------------------------------
 JU4405  NETWORK    0.28   0.65           0.12   0.11   0.33     -0.07305349
 JU4405  -------------------------------------------------------------------
 JU4405  Click here for local accuracies and other accuracy information.
 JU4405
 JU4405.The horizontal coordinates were established by GPS observations
 JU4405.and adjusted by the National Geodetic Survey in June 2012.
 JU4405
 JU4405.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JU4405.been affixed to the stable North American tectonic plate. See 
 JU4405.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JU4405
 JU4405.The horizontal coordinates are valid at the epoch date displayed above
 JU4405.which is a decimal equivalence of Year/Month/Day.
 JU4405
 JU4405.The orthometric height was determined by differential leveling and
 JU4405.adjusted by the NATIONAL GEODETIC SURVEY
 JU4405.in March 2023.
 JU4405
 JU4405.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4405.GEOID18 height accuracy estimate available here.
 JU4405
 JU4405.Click photographs - Photos may exist for this station.
 JU4405
 JU4405.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU4405
 JU4405.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU4405
 JU4405.The ellipsoidal height was determined by GPS observations
 JU4405.and is referenced to NAD 83.
 JU4405
 JU4405.The dynamic height is computed by dividing the NAVD 88
 JU4405.geopotential number by the normal gravity value computed on the
 JU4405.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4405.degrees latitude (g = 980.6199 gals.).
 JU4405
 JU4405.The modeled gravity was interpolated from observed gravity values.
 JU4405
 JU4405. The following values were computed from the NAD 83(2011) position.
 JU4405
 JU4405;                    North         East     Units Scale Factor Converg.
 JU4405;SPC MD       -   185,517.996   501,188.217   MT  0.99998149   +0 44 11.9
 JU4405;SPC MD       -   608,653.63  1,644,315.01   sFT  0.99998149   +0 44 11.9
 JU4405;UTM  18      - 4,353,949.999   428,780.747   MT  0.99966245   -0 31 25.6
 JU4405
 JU4405!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU4405!SPC MD       -   1.00000267  x   0.99998149  =   0.99998416
 JU4405!UTM  18      -   1.00000267  x   0.99966245  =   0.99966512
 JU4405
 JU4405_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2878053949(NAD 83)
 JU4405
 JU4405                          SUPERSEDED SURVEY CONTROL
 JU4405
 JU4405  NAD 83(2007)-  39 19 55.34418(N)    075 49 34.83173(W) AD(2002.00) 1
 JU4405  ELLIP H (04/02/09)  -16.964  (m)                       GP(2002.00) 4 1
 JU4405  NAD 83(1991)-  39 19 55.34435(N)    075 49 34.83176(W) AD(       ) 1
 JU4405  ELLIP H (10/15/07)  -16.960  (m)                       GP(       ) 4 1
 JU4405  NAVD 88 (10/15/07)   16.6    (m)  GEOID03  model used  GPS OBS        
 JU4405  NAVD 88 (07/18/96)   16.603  (m)           54.47   (f) SUPERSEDED  2 1
 JU4405
 JU4405.Superseded values are not recommended for survey control.
 JU4405
 JU4405.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4405.See file dsdata.pdf to determine how the superseded data were derived.
 JU4405
 JU4405_MARKER: DD = SURVEY DISK
 JU4405_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4405_STAMPING: HABERSACK 1989
 JU4405_MARK LOGO: MDSHA
 JU4405_PROJECTION: FLUSH
 JU4405_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU4405_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4405+STABILITY: SURFACE MOTION
 JU4405_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4405+SATELLITE: SATELLITE OBSERVATIONS - February 06, 2023
 JU4405
 JU4405  HISTORY     - Date     Condition        Report By
 JU4405  HISTORY     - 1991     MONUMENTED       MDSHA
 JU4405  HISTORY     - 20020626 GOOD             MDSHA
 JU4405  HISTORY     - 20220121 GOOD             MDSHA
 JU4405  HISTORY     - 20230206 GOOD             MDSHA
 JU4405
 JU4405                          STATION DESCRIPTION
 JU4405
 JU4405'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4405'THE MARKER IS LOCATED ABOUT 1.55 MI (2.49 KM) NORTH-NORTHWEST OF
 JU4405'MASSEY, 2.85 MI (4.59 KM) SOUTHEAST OF GALENA AND ALONG QUINN ROAD.
 JU4405'IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARKER FROM THE
 JU4405'INTERSECTION OF U.S. HIGHWAY 301 AND STATE HIGHWAY 313, GO SOUTHEAST
 JU4405'ON STATE HIGHWAY 313 FOR 0.1 MI (0.2 KM) TO QUINN ROAD ON THE LEFT.
 JU4405'TURN LEFT AND GO NORTH ON QUINN ROAD ABOUT 200.0 FT (61.0 M) TO A
 JU4405'T-INTERSECTION.  TURN LEFT AND GO WEST, NORTH AND NORTHEAST ON QUINN
 JU4405'ROAD FOR 1.55 MI (2.49 KM) TO THE MARKER ON THE LEFT.  THE POINT IS
 JU4405'MARKED WITH A MARYLAND STATE HIGHWAY ADMINISRTATION SURVEY DISK SET
 JU4405'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS FLUSH
 JU4405'WITH THE SURFACE OF THE GROUND.  IT IS 13.5 FT (4.1 M) NORTH OF THE
 JU4405'CENTER OF QUINN ROAD AND 163.0 FT (49.7 M) WEST OF A POWERLINE POLE
 JU4405'NUMBERED 23 10.
 JU4405
 JU4405                          STATION RECOVERY (2002)
 JU4405
 JU4405'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 JU4405'RECOVERED AS DESCRIBED.
 JU4405
 JU4405                          STATION RECOVERY (2022)
 JU4405
 JU4405'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 JU4405'RECOVERED IN GOOD CONDITION. THE MARK IS 161.9 FT (49.3 M) SOUTHEAST
 JU4405'OF A UTILITY POLE NUMBERED CHOPTANK 162-46-21, 109.9 FT (33.5 M)
 JU4405'WEST-SOUTHWEST OF A UTILITY POLE NUMBERED CHOPTANK 162-46-20.
 JU4405
 JU4405                          STATION RECOVERY (2023)
 JU4405
 JU4405'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JU4405'RECOVERED IN GOOD CONDITION.
 JU4405'
 JU4405'NOTE-ADD--THE MARK IS 352.2 FT (107.4 M) EAST OF A UTILITY POLE
 JU4405'NUMBERED CHOPTANK 162-46-17, 62.9 FT (19.2 M) WEST OF THE WEST END OF
 JU4405'A 15 INCH (38 CM) SQUASHED CORRUGATED METAL PIPE, 38.4 FT (11.7 M)
 JU4405'EAST-SOUTHEAST OF A UTILITY POLE NUMBERED CHOPTANK 162-46-16 AND 13.4
 JU4405'FT (4.1 M) NORTH OF THE CENTERLINE OF QUINN ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4404 ***********************************************************************
 JU4404  DESIGNATION -  HABERSACK AZ MK
 JU4404  PID         -  JU4404
 JU4404  STATE/COUNTY-  MD/KENT
 JU4404  COUNTRY     -  US
 JU4404  USGS QUAD   -  MILLINGTON (2016)
 JU4404
 JU4404                         *CURRENT SURVEY CONTROL
 JU4404  ______________________________________________________________________
 JU4404* NAD 83(1986) POSITION- 39 19 53.8    (N) 075 49 53.1    (W)   HD_HELD2
 JU4404* NAVD 88 ORTHO HEIGHT -    16.206 (meters)       53.17  (feet) ADJUSTED
 JU4404  ______________________________________________________________________
 JU4404  GEOID HEIGHT    -        -33.585 (meters)                     GEOID18
 JU4404  DYNAMIC HEIGHT  -         16.197 (meters)       53.14  (feet) COMP
 JU4404  MODELED GRAVITY -    980,110.7   (mgal)                       NAVD 88
 JU4404
 JU4404  VERT ORDER      -  SECOND    CLASS I
 JU4404
 JU4404.The horizontal coordinates were established by autonomous hand held GPS
 JU4404.observations and have an estimated accuracy of +/- 10 meters.
 JU4404
 JU4404.The orthometric height was determined by differential leveling and
 JU4404.adjusted by the NATIONAL GEODETIC SURVEY
 JU4404.in March 2023.
 JU4404
 JU4404.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4404.GEOID18 height accuracy estimate available here.
 JU4404
 JU4404.Click photographs - Photos may exist for this station.
 JU4404
 JU4404.The dynamic height is computed by dividing the NAVD 88
 JU4404.geopotential number by the normal gravity value computed on the
 JU4404.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU4404.degrees latitude (g = 980.6199 gals.).
 JU4404
 JU4404.The modeled gravity was interpolated from observed gravity values.
 JU4404
 JU4404;                    North         East    Units  Estimated Accuracy
 JU4404;SPC MD       -   185,465.      500,751.      MT  (+/- 10 meters HH2 GPS)
 JU4404
 JU4404_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2834253906(NAD 83)
 JU4404
 JU4404                          SUPERSEDED SURVEY CONTROL
 JU4404
 JU4404  NAVD 88 (07/18/96)   16.182  (m)           53.09   (f) SUPERSEDED  2 1
 JU4404
 JU4404.Superseded values are not recommended for survey control.
 JU4404
 JU4404.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4404.See file dsdata.pdf to determine how the superseded data were derived.
 JU4404
 JU4404_MARKER: DD = SURVEY DISK
 JU4404_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4404_STAMPING: HABERSACK AZ MK 1989
 JU4404_MARK LOGO: MDSHA
 JU4404_PROJECTION: RECESSED 3 CENTIMETERS
 JU4404_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JU4404_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4404+STABILITY: SURFACE MOTION
 JU4404_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU4404+SATELLITE: SATELLITE OBSERVATIONS - February 06, 2023
 JU4404
 JU4404  HISTORY     - Date     Condition        Report By
 JU4404  HISTORY     - 1989     MONUMENTED       MDSHA
 JU4404  HISTORY     - 19910301 GOOD             MDSHA
 JU4404  HISTORY     - 20220121 GOOD             MDSHA
 JU4404  HISTORY     - 20230206 GOOD             MDSHA
 JU4404
 JU4404                          STATION DESCRIPTION
 JU4404
 JU4404'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU4404'THE MARKER IS LOCATGED ABOUT 1.55 MI (2.49 KM) NORTH-NORTHWEST OF
 JU4404'MASSEY, 2.65 MI (4.26 KM) SOUTHEAST OF GALENA AND ALONG QUINN ROAD.
 JU4404'IT IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARKER FROM THE
 JU4404'INTERSECTION OF U.S. HIGHWAY 301 AND STATE HIGHWAY 313, GO SOUTHEAST
 JU4404'ON STATE HIGHWAY 313 FOR 0.1 MI (0.2 KM) TO QUINN ROAD ON THE LEFT.
 JU4404'TURN LEFT AND GO NORTH ON QUINN ROAD ABOUT 200.0 FT (61.0 M) TO A
 JU4404'T-INTERSECTION.  TURN LEFT AND GO WEST, NORTH AND NORTHEAST ON QUINN
 JU4404'ROAD FOR 1.3 MI (2.1 KM) TO THE MARKER ON THE RIGHT.  THE POINT IS
 JU4404'MARKED WITH A MARYLAND STATE HIGHWAY ADMINISRTATION SURVEY DISK SET
 JU4404'IN THE TOP OF A 0.8 FT (0.2 M) ROUND CONCRETE MONUMENT WHICH IS FLUSH
 JU4404'WITH THE SURFACE OF THE GROUND.  IT IS 18.5 FT (5.6 M) SOUTH OF THE
 JU4404'CENTER OF QUINN ROAD, 3.5 FT (1.1 M) NORTH OF A TREE AND 91.7 FT
 JU4404'(28.0 M) SOUTHEAST OF AN UNDERGROUND TELEPHONE CABLE MARKER NUMBERED
 JU4404'14.
 JU4404
 JU4404                          STATION RECOVERY (2022)
 JU4404
 JU4404'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 JU4404'THE MARK IS 161.9 FT (49.3 M) SOUTHEAST OF A POWER POLE NUMBERED
 JU4404'CHOPTANK 162-46-21, 109.9 FT (33.5 M) SOUTHWEST OF A POWER POLE
 JU4404'NUMBERED CHOPTANK 162-46-20, 19.2 FT (5.9 M) SOUTH OF THE CENTERLINE
 JU4404'OF QUINN ROAD AND 11.5 FT (3.5 M) NORTH OF A WOODS LINE.
 JU4404
 JU4404                          STATION RECOVERY (2023)
 JU4404
 JU4404'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JU4404'RECOVERED IN GOOD CONDITION.
 JU4404'
 JU4404'NOTE-ADD-- MARK IS 161.9 FT (49.3 M) SOUTHEAST OF A UTILITY POLE
 JU4404'NUMBERED CHOPTANK 162-46-21, 109.9 FT (33.5 M) WEST-SOUTHWEST OF A
 JU4404'UTILITY POLE NUMBERED CHOPTANK 162-46-20.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR8674 ***********************************************************************
 DR8674  DESIGNATION -  HABERSACK AZ MK 2
 DR8674  PID         -  DR8674
 DR8674  STATE/COUNTY-  MD/KENT
 DR8674  COUNTRY     -  US
 DR8674  USGS QUAD   -  MILLINGTON (2016)
 DR8674
 DR8674                         *CURRENT SURVEY CONTROL
 DR8674  ______________________________________________________________________
 DR8674* NAD 83(2011) POSITION- 39 19 54.80122(N) 075 49 43.43223(W)   ADJUSTED
 DR8674* NAD 83(2011) ELLIP HT-   -16.607 (meters)        (09/18/23)   ADJUSTED
 DR8674* NAD 83(2011) EPOCH   -  2010.00
 DR8674* NAVD 88 ORTHO HEIGHT -    16.965 (meters)       55.66  (feet) ADJUSTED
 DR8674  ______________________________________________________________________
 DR8674  GEOID HEIGHT    -        -33.586 (meters)                     GEOID18
 DR8674  NAD 83(2011) X  -  1,209,427.570 (meters)                     COMP
 DR8674  NAD 83(2011) Y  - -4,789,709.580 (meters)                     COMP
 DR8674  NAD 83(2011) Z  -  4,020,873.816 (meters)                     COMP
 DR8674  LAPLACE CORR    -         -1.55  (seconds)                    DEFLEC18
 DR8674  DYNAMIC HEIGHT  -         16.956 (meters)       55.63  (feet) COMP
 DR8674  MODELED GRAVITY -    980,110.7   (mgal)                       NAVD 88
 DR8674
 DR8674  VERT ORDER      -  SECOND    CLASS I
 DR8674
 DR8674  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR8674  Standards:
 DR8674         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR8674            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR8674  -------------------------------------------------------------------
 DR8674  NETWORK    0.48   1.16           0.21   0.18   0.59     -0.16207276
 DR8674  -------------------------------------------------------------------
 DR8674  Click here for local accuracies and other accuracy information.
 DR8674
 DR8674.The horizontal coordinates were established by GPS observations
 DR8674.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR8674
 DR8674.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR8674.been affixed to the stable North American tectonic plate. See 
 DR8674.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR8674
 DR8674.The horizontal coordinates are valid at the epoch date displayed above
 DR8674.which is a decimal equivalence of Year/Month/Day.
 DR8674
 DR8674.The orthometric height was determined by differential leveling and
 DR8674.adjusted by the NATIONAL GEODETIC SURVEY
 DR8674.in March 2023.
 DR8674
 DR8674.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR8674.GEOID18 height accuracy estimate available here.
 DR8674
 DR8674.Click photographs - Photos may exist for this station.
 DR8674
 DR8674.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR8674
 DR8674.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR8674
 DR8674.The ellipsoidal height was determined by GPS observations
 DR8674.and is referenced to NAD 83.
 DR8674
 DR8674.The dynamic height is computed by dividing the NAVD 88
 DR8674.geopotential number by the normal gravity value computed on the
 DR8674.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR8674.degrees latitude (g = 980.6199 gals.).
 DR8674
 DR8674.The modeled gravity was interpolated from observed gravity values.
 DR8674
 DR8674. The following values were computed from the NAD 83(2011) position.
 DR8674
 DR8674;                    North         East     Units Scale Factor Converg.
 DR8674;SPC MD       -   185,498.609   500,982.454   MT  0.99998147   +0 44 06.5
 DR8674;SPC MD       -   608,590.02  1,643,639.93   sFT  0.99998147   +0 44 06.5
 DR8674;UTM  18      - 4,353,935.148   428,574.673   MT  0.99966281   -0 31 31.0
 DR8674
 DR8674!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR8674!SPC MD       -   1.00000261  x   0.99998147  =   0.99998408
 DR8674!UTM  18      -   1.00000261  x   0.99966281  =   0.99966541
 DR8674
 DR8674_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2857453935(NAD 83)
 DR8674
 DR8674                          SUPERSEDED SURVEY CONTROL
 DR8674
 DR8674.No superseded survey control is available for this station.
 DR8674
 DR8674_MARKER: DD = SURVEY DISK
 DR8674_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR8674_STAMPING: HABERSACK AZ 2 2021
 DR8674_MARK LOGO: MD-029
 DR8674_PROJECTION: FLUSH
 DR8674_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR8674_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR8674+STABILITY: SURFACE MOTION
 DR8674_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR8674+SATELLITE: SATELLITE OBSERVATIONS - February 12, 2023
 DR8674
 DR8674  HISTORY     - Date     Condition        Report By
 DR8674  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR8674  HISTORY     - 20220607 GOOD             MDSHA
 DR8674  HISTORY     - 20230212 GOOD             MDSHA
 DR8674
 DR8674                          STATION DESCRIPTION
 DR8674
 DR8674'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2022 (EBD)
 DR8674'RECOVERED IN GOOD CONDITIONS.
 DR8674
 DR8674                          STATION RECOVERY (2023)
 DR8674
 DR8674'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DR8674'THE MARK IS LOCATED ABOUT 15.3 MI (24.6 KM) EAST-NORTHEAST OF
 DR8674'CHESTERTOWN, 5.1 MI (8.2 KM) NORTH OF MILLINGTON, 2.8 MI (4.5 KM)
 DR8674'EAST-SOUTHEAST OF GALENA AND 1.6 MI (2.6 KM) NORTH OF MASSEY.
 DR8674'
 DR8674'TO REACH THE MARK FROM THE JUNCTION OF US 301 AND MD 313 S, GO
 DR8674'EAST-SOUTHEAST ON MD 313 S FOR 0.07 MI (0.11 KM) TO AN INTERSECTION.
 DR8674'TURN LEFT AND GO NORTH-NORTHEAST ON TURN LEFT FOR 0.06 MI (0.10 KM) TO
 DR8674'AN INTERSECTION.  TURN LEFT AND GO NORTH-NORTHWEST ON QUINN ROAD FOR
 DR8674'1.45 MI (2.33 KM) TO THE MARK ON THE LEFT, SET IN THE TOP OF A 12-IN
 DR8674'(30 CM) ROUND CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
 DR8674'
 DR8674'THE MARK IS 329.2 FT (100.3 M) EAST OF A UTILITY POLE NUMBERED
 DR8674'CHOPTANK 162-46-19, 326.3 FT (99.5 M) WEST OF A UTILITY POLE NUMBERED
 DR8674'CHOPTANK 162-46-17, 12.5 FT (3.8 M) NORTH OF THE CENTERLINE OF QUINN
 DR8674'ROAD AND 10.6 FT (3.2 M) SOUTH OF A UTILITY POLE NUMBERED CHOPTANK
 DR8674'162-46-18.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6359 ***********************************************************************
 HV6359  DESIGNATION -  HACK
 HV6359  PID         -  HV6359
 HV6359  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6359  COUNTRY     -  US
 HV6359  USGS QUAD   -  ANNAPOLIS (2016)
 HV6359
 HV6359                         *CURRENT SURVEY CONTROL
 HV6359  ______________________________________________________________________
 HV6359* NAD 83(1991) POSITION- 38 59 13.12826(N) 076 25 23.02677(W)   ADJUSTED
 HV6359* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6359  ______________________________________________________________________
 HV6359  GEOID HEIGHT    -        -33.440 (meters)                     GEOID18
 HV6359  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 HV6359  HORZ ORDER      -  SECOND
 HV6359
 HV6359.The horizontal coordinates were established by classical geodetic methods
 HV6359.and adjusted by the National Geodetic Survey in January 1992.
 HV6359
 HV6359.The orthometric height was scaled from a topographic map.
 HV6359
 HV6359.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6359.GEOID18 height accuracy estimate available here.
 HV6359
 HV6359.Click photographs - Photos may exist for this station.
 HV6359
 HV6359.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6359
 HV6359. The following values were computed from the NAD 83(1991) position.
 HV6359
 HV6359;                    North         East     Units Scale Factor Converg.
 HV6359;SPC MD       -   146,718.815   449,984.391   MT  0.99995172   +0 21 43.6
 HV6359;SPC MD       -   481,359.98  1,476,323.79   sFT  0.99995172   +0 21 43.6
 HV6359;UTM  18      - 4,316,294.826   376,749.230   MT  0.99978705   -0 53 43.5
 HV6359
 HV6359!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6359!SPC MD       -   1.00000513  x   0.99995172  =   0.99995685
 HV6359!UTM  18      -   1.00000513  x   0.99978705  =   0.99979218
 HV6359
 HV6359:                Primary Azimuth Mark                     Grid Az
 HV6359:SPC MD       -  HACK AZ MK                               356 40 29.3
 HV6359:UTM  18      -  HACK AZ MK                               357 55 56.4
 HV6359
 HV6359_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7674916294(NAD 83)
 HV6359
 HV6359|---------------------------------------------------------------------|
 HV6359| PID    Reference Object                     Distance      Geod. Az  |
 HV6359|                                                           dddmmss.s |
 HV6359| JV5183 LABROT MANSION CENTER CHIMNEY       APPROX. 1.6 KM 0001846.5 |
 HV6359| JV5160 BARN CUPOLA                         APPROX. 9.8 KM 0670240.9 |
 HV6359| JV5159 HOUSE SOUTH CHIMNEY                 APPROX. 9.5 KM 0713901.7 |
 HV6359| JV5168 PRICES HOUSE SOUTH CHIMNEY          APPROX. 9.1 KM 0742215.0 |
 HV6359| JV5158 LARGE GREY BARN SOUTH GABLE         APPROX. 9.4 KM 0765336.4 |
 HV6359| HV6167 YELLOW SPIRE                        APPROX.10.1 KM 0882011.7 |
 HV6359| HV6172 RED SILO                            APPROX. 8.1 KM 0951115.0 |
 HV6359| HV6152 LOG CABIN CLUB WEST GABLE           APPROX. 7.3 KM 1010540.2 |
 HV6359| HV6205 FERRY BUILDING SOUTH GABLE          APPROX. 6.9 KM 1201032.3 |
 HV6359| HV6146 KENT IS SPEED TRIAL N R RNG         APPROX. 8.1 KM 1352329.1 |
 HV6359| HV6165 LARGE WHITE HOUSE CHIMNEY           APPROX.10.1 KM 1490243.1 |
 HV6359| HV6397 ANNAPOLIS NAVAL ACAD SE MAST        APPROX. 2.4 KM 2571718.3 |
 HV6359| HV6322 NAVAL RADIO TOWER 3                 APPROX. 2.7 KM 2584747.7 |
 HV6359| HV6310 NAVAL RADIO TOWER 2                 APPROX. 2.6 KM 2670201.2 |
 HV6359| HV6396 ANNAPOLIS NAVAL ACAD NW MAST        APPROX. 2.6 KM 2724416.1 |
 HV6359| HV6311 NAVAL RADIO TOWER 4                 APPROX. 2.3 KM 2725653.4 |
 HV6359| CX2835 HACK RM 1                           112.720 METERS 31934     |
 HV6359| HV6308 WHITE HOUSE NORTHERLY CHIMNEY       342.404 METERS 33930     |
 HV6359| JV5225 WHITEHALL CREEK LGE HSE F GAB       APPROX. 2.0 KM 3451846.2 |
 HV6359| CX2836 HACK RM 2                           141.370 METERS 35426     |
 HV6359| CX2837 HACK AZ MK                                         3570212.9 |
 HV6359|---------------------------------------------------------------------|
 HV6359
 HV6359                          SUPERSEDED SURVEY CONTROL
 HV6359
 HV6359  NAD 83(1986)-  38 59 13.12416(N)    076 25 23.03834(W) AD(       ) 2
 HV6359  NAD 27      -  38 59 12.72000(N)    076 25 24.18600(W) AD(       ) 2
 HV6359
 HV6359.Superseded values are not recommended for survey control.
 HV6359
 HV6359.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6359.See file dsdata.pdf to determine how the superseded data were derived.
 HV6359
 HV6359_MARKER: DS = TRIANGULATION STATION DISK
 HV6359_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6359_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6359_STAMPING: HACK 1932
 HV6359_MARK LOGO: CGS
 HV6359
 HV6359  HISTORY     - Date     Condition        Report By
 HV6359  HISTORY     - 1932     MONUMENTED       CGS
 HV6359  HISTORY     - 1934     GOOD             CGS
 HV6359  HISTORY     - 1947     GOOD             CGS
 HV6359  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6359
 HV6359                          STATION DESCRIPTION
 HV6359
 HV6359'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6359'ABOUT 3 MILES E OF ANNAPOLIS ON THE HIGHEST GROUND ON HACKETT
 HV6359'POINT ABOUT 200 METERS (656 FEET) E OF THE S ARM OF POND AND
 HV6359'30 METERS (98 FEET) BACK FROM EDGE OF BANK TO SOUTHWARD AND TO
 HV6359'EASTWARD.  STATION IS ON LAND THAT IS UNDER CULTIVATION AND 2
 HV6359'REFERENCE MARKS WERE PLACED.
 HV6359'
 HV6359'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE, IN
 HV6359'THE TOP OF A TILE.
 HV6359'
 HV6359'STATION IS MARKED BY A STANDARD
 HV6359'BRONZE DISK SET IN CENTER OF A 4-INCH TILE AND IS 18 INCHES
 HV6359'BELOW THE SURFACE OF GROUND.
 HV6359'
 HV6359'REFERENCE MARKS WERE PLACED ALONG THE EDGE OF THE CULTIVATED
 HV6359'FIELD.  REFERENCE MARK NO.1 IS AT THE OUTER EDGE OF THE BUSHES
 HV6359'SURROUNDING A SMALL POND AND REFERENCE MARK NO.2 IS 2 FEET FROM
 HV6359'THE BASE OF A LONE PEAR TREE.
 HV6359
 HV6359                          STATION RECOVERY (1934)
 HV6359
 HV6359'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6359'STATION WAS RECOVERED AND ALL MARKS FOUND IN GOOD CONDITION AS
 HV6359'DESCRIBED WITH THE EXCEPTION OF REFERENCE MARK NO.1 AND REFERENCE
 HV6359'MARK NO.2.  THE DISTANCE TO REFERENCE MARK NO.1 WAS FOUND TO BE
 HV6359'112.72 METERS INSTEAD OF 141.43 METERS (464.0 FEET), REFERENCE
 HV6359'MARK NO.2 WAS 141.37 METERS INSTEAD OF 112.83 METERS (370.2
 HV6359'FEET).
 HV6359'
 HV6359'AN AZIMUTH MARK WAS SET IN 1933 BUT THE STATION WAS NOT OCCUPIED
 HV6359'UNTIL JULY 31, 1934.  THE MARK IS STAMPED HACK 1932 1933.  IT
 HV6359'IS A STANDARD BRONZE DISK SET IN CONCRETE.
 HV6359'THE MARK PROJECTS 8 INCHES ABOVE GROUND, IS 0.3 MILE N OF
 HV6359'THE STATION, 9 PACES S OF THE SW CORNER OF A TENNIS COURT, 75
 HV6359'ENE OF A 2 CAR GARAGE, 7 FEET E OF E ROW OF 2 ROWS OF APPLE
 HV6359'TREES, AND 90 PACES E OF A SMALL WHITE HOUSE.
 HV6359
 HV6359                          STATION RECOVERY (1947)
 HV6359
 HV6359'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947 (MJT)
 HV6359'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 HV6359'TO BE IN GOOD CONDITION.  DISTANCES AND DIRECTIONS TO REFERENCE
 HV6359'AND AZIMUTH MARKS WERE NOT TAKEN AT THIS TIME DUE TO THE FACT
 HV6359'THEY ARE NOT VISIBLE FROM THE GROUND, AND PERMISSION WAS REFUSED
 HV6359'TO BUILD A TOWER.  A COMPLETE NEW DESCRIPTION FOLLOWS--THE STATION
 HV6359'IS LOCATED ON HACKETT POINT, ABOUT 3 MILES E OF ANNAPOLIS.  IT
 HV6359'IS 100 FEET BACK FROM THE EDGE OF THE BANK AND 80 FEET BACK
 HV6359'FROM A SMALL GROUP OF TREES ON THE POINT.  THE LAND AT THIS TIME
 HV6359'WAS NOT UNDER CULTIVATION AND SOME CLEARING OF BRUSH WAS
 HV6359'NECESSARY TO SEE LABROT AND EASTERN.  THE MARK IS SET IN A
 HV6359'TILE 18 INCHES BELOW THE SURFACE OF THE GROUND.  THE DISK IS
 HV6359'STAMPED HACK 1932.
 HV6359'
 HV6359'REFERENCE MARK 1 IS 369.8 FEET N OF THE STATION AND 2 FEET E
 HV6359'OF A 6-INCH PEAR TREE.  THE MARK IS FLUSH WITH THE GROUND, IN A
 HV6359'6-INCH TILE, AND THE DISK IS STAMPED HACK NO 1 1932.
 HV6359'
 HV6359'REFERENCE MARK 2 IS 463.8 FEET NW OF THE STATION, 400 FEET SE
 HV6359'OF A POND, 10 FEET N OF AN E-W WOVEN-WIRE FENCE, AND 10 FEET
 HV6359'W OF A N-S WOVEN-WIRE FENCE.  THE MARK IS FLUSH WITH THE GROUND,
 HV6359'IN A 6-INCH TILE, AND THE DISK IS STAMPED HACK NO 2 1932.
 HV6359'
 HV6359'THE AZIMUTH MARK IS 0.25 MILE N OF THE STATION AND 200 FEET ENE
 HV6359'OF A GARAGE.  THE MARK PROJECTS ABOUT 6 INCHES ABOVE THE SURFACE
 HV6359'OF THE LAWN AND THE DISK IS STAMPED HACK 1932-1933.
 HV6359'
 HV6359'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 2 AND THE
 HV6359'REVELL HIGHWAY (SANDY POINT FERRY ROAD), GO E ON REVELL
 HV6359'HIGHWAY FOR 4.8 MILES, TURN RIGHT ON PAVED ROAD FOR 1.5 MILES TO
 HV6359'A LOCKED GATE (SEE CARETAKER OF LABROT ESTATE FOR KEY),
 HV6359'CONTINUE 0.5 MILE TO ANOTHER GATE.  PASS THROUGH AND TURN LEFT
 HV6359'ALONG FENCE TO GAP IN THE WIRE, TURN LEFT THROUGH GAP, THEN
 HV6359'RIGHT ALONG FENCE TO AZIMUTH MARK ON THE LEFT IN THE LAWN, AS
 HV6359'DESCRIBED.  TURN RIGHT AT THE FENCE CORNER AND GO 0.25
 HV6359'MILE TO SMALL CLUMP OF TREES ON HACKETTS POINT AND THE
 HV6359'STATION AS DESCRIBED.
 HV6359
 HV6359                          STATION RECOVERY (1961)
 HV6359
 HV6359'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 HV6359'STATION AND REFERENCE MARKS WERE SEARCHED FOR BUT NOT FOUND.  THE
 HV6359'AREA IS PLOWED AND CULTIVATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6356 ***********************************************************************
 HV6356  DESIGNATION -  HACKETT
 HV6356  PID         -  HV6356
 HV6356  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6356  COUNTRY     -  US
 HV6356  USGS QUAD   -  ANNAPOLIS (2016)
 HV6356
 HV6356                         *CURRENT SURVEY CONTROL
 HV6356  ______________________________________________________________________
 HV6356* NAD 83(1991) POSITION- 38 59 12.03942(N) 076 25 32.95798(W)   ADJUSTED
 HV6356* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6356  ______________________________________________________________________
 HV6356  GEOID HEIGHT    -        -33.437 (meters)                     GEOID18
 HV6356  LAPLACE CORR    -         -2.61  (seconds)                    DEFLEC18
 HV6356  HORZ ORDER      -  THIRD
 HV6356
 HV6356.The horizontal coordinates were established by classical geodetic methods
 HV6356.and adjusted by the National Geodetic Survey in January 1992.
 HV6356
 HV6356.The orthometric height was scaled from a topographic map.
 HV6356
 HV6356.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6356.GEOID18 height accuracy estimate available here.
 HV6356
 HV6356.Click photographs - Photos may exist for this station.
 HV6356
 HV6356.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6356
 HV6356. The following values were computed from the NAD 83(1991) position.
 HV6356
 HV6356;                    North         East     Units Scale Factor Converg.
 HV6356;SPC MD       -   146,683.733   449,745.601   MT  0.99995171   +0 21 37.3
 HV6356;SPC MD       -   481,244.88  1,475,540.36   sFT  0.99995171   +0 21 37.3
 HV6356;UTM  18      - 4,316,264.998   376,509.767   MT  0.99978778   -0 53 49.8
 HV6356
 HV6356!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6356!SPC MD       -   1.00000528  x   0.99995171  =   0.99995699
 HV6356!UTM  18      -   1.00000528  x   0.99978778  =   0.99979306
 HV6356
 HV6356:                Primary Azimuth Mark                     Grid Az
 HV6356:SPC MD       -  GREENBURY PT                             242 21 21.5
 HV6356:UTM  18      -  GREENBURY PT                             243 36 48.6
 HV6356
 HV6356_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7650916264(NAD 83)
 HV6356
 HV6356|---------------------------------------------------------------------|
 HV6356| PID    Reference Object                     Distance      Geod. Az  |
 HV6356|                                                           dddmmss.s |
 HV6356| CX2838 HACKETT RM                           66.140 METERS 01455     |
 HV6356| HV6305 THOMAS PT SHOAL LH                  APPROX. 9.8 KM 1850755.7 |
 HV6356| HV6363 BAY RIDGE HOTEL EAST CHIMNEY        APPROX. 5.7 KM 2035701.8 |
 HV6356| HV6365 GREENBURY POINT SHOAL LH            APPROX. 3.2 KM 2300407.3 |
 HV6356| HV6350 GREENBURY PT                        APPROX. 2.8 KM 2424258.8 |
 HV6356| HV6317 YELLOW HOUSE SOUTH CHIMNEY          APPROX. 2.2 KM 2565942.5 |
 HV6356| HV6393 ANNAPOLIS ST CAPITOL BLDG DOME      APPROX. 5.7 KM 2610936.7 |
 HV6356| HV6395 ANNAPOLIS NAVAL ACAD CHAPEL         APPROX. 5.3 KM 2635027.0 |
 HV6356| HV6312 SPIT                                381.991 METERS 33751     |
 HV6356|---------------------------------------------------------------------|
 HV6356
 HV6356                          SUPERSEDED SURVEY CONTROL
 HV6356
 HV6356  NAD 83(1986)-  38 59 12.03530(N)    076 25 32.96952(W) AD(       ) 3
 HV6356  NAD 27      -  38 59 11.63100(N)    076 25 34.13200(W) AD(       ) 3
 HV6356  USSD        -  38 59 11.98900(N)    076 25 33.94800(W) AD(       ) 3
 HV6356
 HV6356.Superseded values are not recommended for survey control.
 HV6356
 HV6356.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6356.See file dsdata.pdf to determine how the superseded data were derived.
 HV6356
 HV6356_MARKER: U = CONCRETE POST
 HV6356_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6356_SP_SET: OBJECT DRIVEN INTO GROUND
 HV6356_MARK LOGO: CGS
 HV6356
 HV6356  HISTORY     - Date     Condition        Report By
 HV6356  HISTORY     - 1910     MONUMENTED       CGS
 HV6356  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6356
 HV6356                          STATION DESCRIPTION
 HV6356
 HV6356'DESCRIBED BY COAST AND GEODETIC SURVEY 1910 (OWF)
 HV6356'NEAR CENTER OF HACKETS POINT, 25 METERS BACK FROM CAVING BANK,
 HV6356'ABOUT 75 METERS SOUTHWARD FROM HIGH POINT OF BANK OF POND, AND ON
 HV6356'RIDGE BETWEEN THE TWO HORNS OF POND.  MARKED BY CEMENT POST 8
 HV6356'INCHES SQUARE ON TOP, ABOUT 20 INCHES LONG, AND 2-1/2 INCHES ABOVE
 HV6356'GROUND.  SUBSURFACE MARK IS NOZZLE OF BOTTLE.  REFERENCE
 HV6356'MARK IS A 4-INCH TILE SET IN CEMENT WITH LARGE END DOWN AND TOP
 HV6356'2 INCHES ABOVE SURFACE, CENTERED BY A 3/4-INCH IRON PIPE, 14
 HV6356'INCHES LONG AND 1/4 INCH ABOVE TOP OF TILE.  DISTANT 66.14
 HV6356'METERS (216.99 FEET) N 14 DEG 55 MIN E.
 HV6356
 HV6356                          STATION RECOVERY (1932)
 HV6356
 HV6356'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6356'THE BANK HAS CAVED AWAY AT THIS POINT AND THE STATION MARK AND
 HV6356'SUBSURFACE MARK ARE LOST.  THE REFERENCE MARK (4-INCH TILE WITH
 HV6356'3/4-INCH PIPE SET IN CONCRETE) WAS FOUND IN GOOD CONDITION.  THE
 HV6356'REFERENCE MARK IS 2 METERS BACK FROM EDGE OF BANK ON POND AND
 HV6356'ABOUT MIDWAY BETWEEN TWO HORNS OF POND AND IS ABOUT 1 INCH ABOVE
 HV6356'SURFACE OF GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2744 ***********************************************************************
 HU2744  DESIGNATION -  HACKETT AZ MK 2
 HU2744  PID         -  HU2744
 HU2744  STATE/COUNTY-  MD/DORCHESTER
 HU2744  COUNTRY     -  US
 HU2744  USGS QUAD   -  RHODESDALE (2016)
 HU2744
 HU2744                         *CURRENT SURVEY CONTROL
 HU2744  ______________________________________________________________________
 HU2744* NAD 83(1991) POSITION- 38 36 26.25655(N) 075 48 51.33548(W)   ADJUSTED
 HU2744* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU2744  ______________________________________________________________________
 HU2744  GEOID HEIGHT    -        -35.368 (meters)                     GEOID18
 HU2744  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 HU2744  HORZ ORDER      -  SECOND
 HU2744
 HU2744.The horizontal coordinates were established by classical geodetic methods
 HU2744.and adjusted by the National Geodetic Survey in January 1992.
 HU2744
 HU2744.The orthometric height was scaled from a topographic map.
 HU2744
 HU2744.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2744.GEOID18 height accuracy estimate available here.
 HU2744
 HU2744.Click photographs - Photos may exist for this station.
 HU2744
 HU2744.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2744
 HU2744. The following values were computed from the NAD 83(1991) position.
 HU2744
 HU2744;                    North         East     Units Scale Factor Converg.
 HU2744;SPC MD       -   105,083.967   503,274.816   MT  0.99996077   +0 44 39.2
 HU2744;SPC MD       -   344,762.98  1,651,160.79   sFT  0.99996077   +0 44 39.2
 HU2744;UTM  18      - 4,273,513.346   429,103.189   MT  0.99966190   -0 30 29.2
 HU2744
 HU2744!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2744!SPC MD       -   1.00000524  x   0.99996077  =   0.99996601
 HU2744!UTM  18      -   1.00000524  x   0.99966190  =   0.99966714
 HU2744
 HU2744_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2910373513(NAD 83)
 HU2744
 HU2744                          SUPERSEDED SURVEY CONTROL
 HU2744
 HU2744  NAD 83(1986)-  38 36 26.25214(N)    075 48 51.35344(W) AD(       ) 2
 HU2744
 HU2744.Superseded values are not recommended for survey control.
 HU2744
 HU2744.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2744.See file dsdata.pdf to determine how the superseded data were derived.
 HU2744
 HU2744_MARKER: DZ = AZIMUTH MARK DISK
 HU2744_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2744_STAMPING: HACKETT 1934 NO 2 1987
 HU2744_MARK LOGO: NGS
 HU2744_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2744_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2744+STABILITY: SURFACE MOTION
 HU2744
 HU2744  HISTORY     - Date     Condition        Report By
 HU2744  HISTORY     - 1987     MONUMENTED       NGS
 HU2744
 HU2744                          STATION DESCRIPTION
 HU2744
 HU2744'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU2744'THE STATION IS LOCATED ABOUT 3.5 KM (2.2 MI) NORTH-NORTHWEST OF
 HU2744'ELDORADO, 5.0 KM (3.1 MI) SOUTHEAST OF HURLOCK AND 23 KM (14.3 MI)
 HU2744'EAST OF CAMBRIDGE.  OWNERSHIP--CHESAPEAKE CORPORATION OF VIRGINIA.
 HU2744'
 HU2744'TO REACH THE STATION FROM THE INTERSECTION OF MD 14 AND 313 NEAR THE
 HU2744'CENTER OF THE SMALL VILLAGE OF ELDORADO, GO NORTHWEST FOR 2.5 KM
 HU2744'(1.6 MI) ON PUCKUM ROAD TO A SAND ROAD LEFT.  TURN LEFT AND GO WEST
 HU2744'FOR 1.45 KM (0.90 MI) ON THE SAND ROAD TO THE STATION ON THE RIGHT.
 HU2744'THIS IS 0.6 KM (0.4 MI) AFTER PASSING TRIANGULATION STATION HACKETT
 HU2744'1934.
 HU2744'
 HU2744'THE STATION IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2744'STAMPED---HACKETT 1934 NO 2 1987---, SET INTO THE TOP OF A ROUND
 HU2744'CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER RECESSED 5 CM
 HU2744'(2 INCHES) BELOW GROUND.  LOCATED 66.3 M (217.5 FT) EAST-NORTHEAST
 HU2744'FROM A T-INTERSECTION IN THE SAND ROAD, 6.9 M (22.6 FT) NORTH FROM THE
 HU2744'CENTER OF THE SAND ROAD, 2.7 M (8.9 FT) SOUTHWEST FROM A 14-INCH
 HU2744'(36 CM) OAK TREE AND 0.3 M (1.0 FT) SOUTH FROM A CARSONITE WITNESS
 HU2744'POST.  THE UNDERGROUND MARK IS A STANDARD NATIONAL GEODETIC SURVEY
 HU2744'DISK STAMPED---HACKETT 1934 NO 2 1987---, SET INTO AN IRREGULAR MASS
 HU2744'OF CONCRETE 1.0 M (3.3 FT) BELOW THE SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2745 ***********************************************************************
 HU2745  DESIGNATION -  HACKETT RESET
 HU2745  PID         -  HU2745
 HU2745  STATE/COUNTY-  MD/DORCHESTER
 HU2745  COUNTRY     -  US
 HU2745  USGS QUAD   -  RHODESDALE (2016)
 HU2745
 HU2745                         *CURRENT SURVEY CONTROL
 HU2745  ______________________________________________________________________
 HU2745* NAD 83(1991) POSITION- 38 36 21.63501(N) 075 48 17.14585(W)   ADJUSTED
 HU2745* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 HU2745  ______________________________________________________________________
 HU2745  GEOID HEIGHT    -        -35.383 (meters)                     GEOID18
 HU2745  LAPLACE CORR    -         -2.79  (seconds)                    DEFLEC18
 HU2745  HORZ ORDER      -  SECOND
 HU2745
 HU2745.The horizontal coordinates were established by classical geodetic methods
 HU2745.and adjusted by the National Geodetic Survey in January 1992.
 HU2745
 HU2745.The orthometric height was scaled from a topographic map.
 HU2745
 HU2745.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2745.GEOID18 height accuracy estimate available here.
 HU2745
 HU2745.Click photographs - Photos may exist for this station.
 HU2745
 HU2745.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2745
 HU2745. The following values were computed from the NAD 83(1991) position.
 HU2745
 HU2745;                    North         East     Units Scale Factor Converg.
 HU2745;SPC MD       -   104,952.264   504,103.808   MT  0.99996087   +0 45 00.6
 HU2745;SPC MD       -   344,330.89  1,653,880.58   sFT  0.99996087   +0 45 00.6
 HU2745;UTM  18      - 4,273,363.601   429,928.858   MT  0.99966046   -0 30 07.8
 HU2745
 HU2745!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2745!SPC MD       -   1.00000433  x   0.99996087  =   0.99996520
 HU2745!UTM  18      -   1.00000433  x   0.99966046  =   0.99966479
 HU2745
 HU2745:                Primary Azimuth Mark                     Grid Az
 HU2745:SPC MD       -  HACKETT RM 1                             277 07 23.0
 HU2745:UTM  18      -  HACKETT RM 1                             278 22 31.4
 HU2745
 HU2745_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2992873363(NAD 83)
 HU2745
 HU2745|---------------------------------------------------------------------|
 HU2745| PID    Reference Object                     Distance      Geod. Az  |
 HU2745|                                                           dddmmss.s |
 HU2745| DC7350 HACKETT RM 3                         23.793 METERS 02720     |
 HU2745| CS6543 HACKETT RM 4                         11.677 METERS 03040     |
 HU2745| DC7348 HACKETT RM 1                                       2775223.6 |
 HU2745| HU2744 HACKETT AZ MK 2                     APPROX. 0.8 KM 2794638.4 |
 HU2745| DC7349 HACKETT RM 2                         48.920 METERS 28901     |
 HU2745| CS6544 HACKETT RM 5                         20.629 METERS 29653     |
 HU2745|---------------------------------------------------------------------|
 HU2745
 HU2745                          SUPERSEDED SURVEY CONTROL
 HU2745
 HU2745  NAD 83(1986)-  38 36 21.63026(N)    075 48 17.16388(W) AD(       ) 2
 HU2745  NAD 27      -  38 36 21.21400(N)    075 48 18.39200(W) AD(       ) 2
 HU2745
 HU2745.Superseded values are not recommended for survey control.
 HU2745
 HU2745.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2745.See file dsdata.pdf to determine how the superseded data were derived.
 HU2745
 HU2745_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2745_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2745_STAMPING: HACKETT 1934 1987
 HU2745_MARK LOGO: NGS
 HU2745_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2745_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2745+STABILITY: SURFACE MOTION
 HU2745
 HU2745  HISTORY     - Date     Condition        Report By
 HU2745  HISTORY     - 1987     MONUMENTED       NGS
 HU2745
 HU2745                          STATION DESCRIPTION
 HU2745
 HU2745'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU2745'THE STATION IS LOCATED ABOUT 2.8 KM (1.7 MI) NORTH-NORTHWEST OF
 HU2745'ELDORADO, 5.9 KM (3.7 MI) SOUTHEAST OF HURLOCK, 24 KM (14.9 MI) EAST
 HU2745'OF CAMBRIDGE AND ON A LOW SAND RIDGE.  OWNERSHIP--CHESAPEAKE
 HU2745'CORPORATION OF VIRGINIA.
 HU2745'
 HU2745'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 14 AND
 HU2745'313 NEAR THE CENTER OF THE SMALL VILLAGE OF ELDORADO, GO NORTHWEST FOR
 HU2745'2.5 KM (1.6 MI) ON PUCKUM ROAD TO A SAND ROAD LEFT.  TURN LEFT AND GO
 HU2745'WEST FOR 0.6 KM (0.4 MI) ON THE SAND ROAD TO THE STATION ON THE LEFT
 HU2745'JUST SOUTHWEST OF THE HIGHEST POINT OF THE SMALL SAND RIDGE.
 HU2745'
 HU2745'THE STATION IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2745'STAMPED---HACKETT 1934 1987---, SET INTO THE TOP OF A ROUND CONCRETE
 HU2745'MONUMENT 30 CM (12 INCHES) IN DIAMETER RECESSED 5 CM (2 INCHES) BELOW
 HU2745'GROUND.  LOCATED 20.4 M (66.9 FT) SOUTH FROM THE CENTER OF THE SAND
 HU2745'ROAD, 17.1 M (56.1 FT) SOUTHEAST FROM A SMALL KNOLL AT THE HIGHEST
 HU2745'POINT OF THE RIDGE AND 1.5 M (4.9 FT) NORTH FROM A CARSONITE WITNESS
 HU2745'POST.  THE UNDERGROUND MARK IS A STANDARD NATIONAL GEODETIC SURVEY
 HU2745'DISK STAMPED---HACKETT 1934---, SET INTO AN IRREGULAR MASS OF CONCRETE
 HU2745'0.8 M (2.6 FT) BELOW THE SURFACE.
 HU2745'
 HU2745'REFERENCE MARK NO. 4 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2745'STAMPED---HACKETT 1934 NO 4 1987---, SET INTO THE TOP OF A ROUND
 HU2745'CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER RECESSED 5 CM
 HU2745'(2 INCHES) BELOW GROUND.  LOCATED 10.4 M (34.1 FT) SOUTH FROM THE
 HU2745'CENTER OF THE SAND ROAD, 7.6 M (24.9 FT) WEST-SOUTHWEST FROM THE
 HU2745'HIGHEST POINT OF THE RIDGE AND 12.9 M (42.3 FT) NORTH-NORTHEAST FROM
 HU2745'THE WITNESS POST.  MARK IS LEVEL WITH THE STATION.
 HU2745'
 HU2745'REFERENCE MARK NO. 5 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2745'STAMPED---HACKETT 1934 NO 5 1987---, SET INTO THE TOP OF A ROUND
 HU2745'CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER PROJECTING 5 CM
 HU2745'(2 INCHES) ABOVE GROUND.  LOCATED 10.8 M (35.4 FT) SOUTH FROM THE
 HU2745'CENTER OF THE SAND ROAD, 32.0 M (105.0 FT) WEST FROM THE HIGHEST POINT
 HU2745'OF THE RIDGE AND 21.2 M (69.6 FT) WEST-NORTHWEST FROM THE WITNESS
 HU2745'POST.  MARK IS LEVEL WITH THE STATION.
 HU2745'
 HU2745'AZIMUTH MARK NO. 2 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2745'STAMPED---HACKETT 1934 NO 2 1987---, SET INTO THE TOP OF A ROUND
 HU2745'CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER RECESSED 5 CM
 HU2745'(2 INCHES) BELOW GROUND.  LOCATED 66.8 M (219.2 FT) EAST-NORTHEAST
 HU2745'FROM A T-INTERSECTION IN THE SAND ROAD, 6.9 M (22.6 FT) NORTH FROM THE
 HU2745'CENTER OF THE SAND ROAD, 2.7 M (8.9 FT) SOUTHWEST FROM A 14-INCH
 HU2745'(36 CM) OAK TREE AND 0.3 M (1.0 FT) SOUTH FROM A CARSONITE WITNESS
 HU2745'POST.  TO REACH THE AZIMUTH FROM THE STATION, GO WEST FOR 0.85 KM
 HU2745'(0.53 MI) ON THE SAND ROAD TO THE MARK ON THE RIGHT, NORTH SIDE OF THE
 HU2745'ROAD.  THE UNDERGROUND MARK IS A STANDARD NATIONAL GEODETIC SURVEY
 HU2745'DISK STAMPED---HACKETT 1934 NO 2 1987---, SET INTO AN IRREGULAR MASS
 HU2745'OF CONCRETE 1.0 M (3.3 FT) BELOW THE SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1486 ***********************************************************************
 JW1486  DESIGNATION -  HAFER
 JW1486  PID         -  JW1486
 JW1486  STATE/COUNTY-  MD/ALLEGANY
 JW1486  COUNTRY     -  US
 JW1486  USGS QUAD   -  EVITTS CREEK (2016)
 JW1486
 JW1486                         *CURRENT SURVEY CONTROL
 JW1486  ______________________________________________________________________
 JW1486* NAD 83(1995) POSITION- 39 39 37.85187(N) 078 44 35.83615(W)   ADJUSTED
 JW1486* NAVD 88 ORTHO HEIGHT -   268.    (meters)      879.    (feet) SCALED
 JW1486  ______________________________________________________________________
 JW1486  GEOID HEIGHT    -        -32.748 (meters)                     GEOID18
 JW1486  LAPLACE CORR    -         -4.81  (seconds)                    DEFLEC18
 JW1486  HORZ ORDER      -  SECOND
 JW1486
 JW1486.The horizontal coordinates were established by classical geodetic methods
 JW1486.and adjusted by the National Geodetic Survey in April 1998.
 JW1486
 JW1486.The orthometric height was scaled from a topographic map.
 JW1486
 JW1486.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1486.GEOID18 height accuracy estimate available here.
 JW1486
 JW1486.Click photographs - Photos may exist for this station.
 JW1486
 JW1486.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1486
 JW1486. The following values were computed from the NAD 83(1995) position.
 JW1486
 JW1486;                    North         East     Units Scale Factor Converg.
 JW1486;SPC MD       -   222,765.175   250,401.912   MT  1.00004361   -1 05 38.9
 JW1486;SPC MD       -   730,855.41    821,526.94   sFT  1.00004361   -1 05 38.9
 JW1486;SPC PA S     -    36,808.228   514,757.978   MT  1.00005385   -0 38 40.0
 JW1486;SPC PA S     -   120,761.66  1,688,835.13   sFT  1.00005385   -0 38 40.0
 JW1486;SPC WV N     -   129,110.670   664,932.830   MT  0.99994092   +0 28 57.4
 JW1486;SPC WV N     -   423,590.59  2,181,533.79   sFT  0.99994092   +0 28 57.4
 JW1486;UTM  17      - 4,392,512.727   693,592.209   MT  1.00006143   +1 26 26.8
 JW1486
 JW1486!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1486!SPC MD       -   0.99996312  x   1.00004361  =   1.00000673
 JW1486!SPC PA S     -   0.99996312  x   1.00005385  =   1.00001697
 JW1486!SPC WV N     -   0.99996312  x   0.99994092  =   0.99990405
 JW1486!UTM  17      -   0.99996312  x   1.00006143  =   1.00002455
 JW1486
 JW1486:                Primary Azimuth Mark                     Grid Az
 JW1486:SPC MD       -  HAFER AZ MK                              224 30 37.0
 JW1486:SPC PA S     -  HAFER AZ MK                              224 03 38.1
 JW1486:SPC WV N     -  HAFER AZ MK                              222 56 00.7
 JW1486:UTM  17      -  HAFER AZ MK                              221 58 31.3
 JW1486
 JW1486_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD9359292512(NAD 83)
 JW1486
 JW1486|---------------------------------------------------------------------|
 JW1486| PID    Reference Object                     Distance      Geod. Az  |
 JW1486|                                                           dddmmss.s |
 JW1486| CJ9918 HAFER RM 1                           21.735 METERS 06919     |
 JW1486| CJ9919 HAFER RM 2                           25.759 METERS 19236     |
 JW1486| JW1483 CUMBERLAND RADIO STA WTBO MAST      APPROX. 1.4 KM 1941432.2 |
 JW1486| CJ9917 HAFER AZ MK                                        2232458.1 |
 JW1486|---------------------------------------------------------------------|
 JW1486
 JW1486                          SUPERSEDED SURVEY CONTROL
 JW1486
 JW1486  NAD 83(1991)-  39 39 37.85256(N)    078 44 35.83827(W) AD(       ) 2
 JW1486  NAD 83(1986)-  39 39 37.85586(N)    078 44 35.84381(W) AD(       ) 2
 JW1486  NAD 27      -  39 39 37.54200(N)    078 44 36.78100(W) AD(       ) 2
 JW1486
 JW1486.Superseded values are not recommended for survey control.
 JW1486
 JW1486.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1486.See file dsdata.pdf to determine how the superseded data were derived.
 JW1486
 JW1486_MARKER: DS = TRIANGULATION STATION DISK
 JW1486_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1486_STAMPING: HAFER 1955
 JW1486_MARK LOGO: CGS
 JW1486_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1486+STABILITY: SURFACE MOTION
 JW1486
 JW1486  HISTORY     - Date     Condition        Report By
 JW1486  HISTORY     - 1955     MONUMENTED       CGS
 JW1486  HISTORY     - 1964     GOOD             MDDT
 JW1486
 JW1486                          STATION DESCRIPTION
 JW1486
 JW1486'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1486'THE STATION IS LOCATED ABOUT 1 MILE NORTHEAST OF CUMBERLAND ON
 JW1486'THE HIGHEST POINT IN THE IMMEDIATE VICINITY AND ON LAND OWNED BY
 JW1486'JOHN HAFER.  IT IS ABOUT 100 FEET SOUTHEAST OF U.S. HIGHWAY 40,
 JW1486'28 FEET NORTHWEST OF THE CENTER OF A DIRT ROAD AND 8 FEET EAST
 JW1486'OF A 4 IN X 4 IN WHITE WITNESS POST.
 JW1486'
 JW1486'TO REACH THE STATION FROM THE INTERSECTION OF BALTIMORE AND
 JW1486'LIBERTY STREETS IN CUMBERLAND, GO EAST ON HIGHWAY 40 FOR 1.3
 JW1486'MILES TO THE TOP OF A GRADE AND A DIRT ROAD ON THE RIGHT, TURN
 JW1486'SHARP RIGHT AND GO SOUTHWESTERLY ON THE DIRT ROAD FOR 0.1 MILE
 JW1486'TO THE STATION ON THE RIGHT.
 JW1486'
 JW1486'TO REACH THE AZIMUTH MARK FROM THE STATION GO GO WESTERLY ON
 JW1486'HIGHWAY 40 FOR 0.4 MILE TO THE EAST END OF CENTRAL AVENUE,
 JW1486'CONTINUE STRAIGHT AHEAD (WEST) ON CENTRAL AVENUE FOR 0.15 MILE
 JW1486'TO THE AZIMUTH MARK ON THE RIGHT.
 JW1486'
 JW1486'THE STATION MARK PROJECTS 4 INCHES, AND THE DISK IS STAMPED
 JW1486'HAFER 1955.
 JW1486'
 JW1486'REFERENCE MARK 1 IS 13 FEET SOUTHEAST OF THE CENTER OF THE DIRT
 JW1486'ROAD.  THE MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED HAFER
 JW1486'NO 1 1955.
 JW1486'
 JW1486'REFERENCE MARK 2 IS 13 FEET SOUTHWEST OF THE CENTER OF THE DIRT
 JW1486'ROAD.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1486'STAMPED HAFER NO 2 1955.
 JW1486'
 JW1486'THE AZIMUTH MARK IS 21.5 FEET SOUTH OF THE SOUTH CORNER OF THE
 JW1486'L. J. MILLER RESIDENCE, 17 FEET NORTHWEST OF THE CENTER OF
 JW1486'CENTRAL AVENUE AND 2 FEET NORTHEAST OF A 4 IN X 4 IN WHITE
 JW1486'WITNESS POST.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK
 JW1486'IS STAMPED HAFER 1955.
 JW1486'
 JW1486'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JW1486
 JW1486                          STATION RECOVERY (1964)
 JW1486
 JW1486'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1964
 JW1486'THE STATION MARK STAMPED HAFER 1955 1957 WAS RECOVERED, BUT THE
 JW1486'REFERENCE MARKS COULD NOT BE FOUND.  THE AZIMUTH MARK WAS
 JW1486'DESTROYED DUE TO ROAD CONSTRUCTION.  THERE WAS NO SUITABLE
 JW1486'LOCATION FOR A NEW MARKER AT THIS TIME.
 JW1486'
 JW1486'OFFICE NOTE--THERE IS NO RECORD OF THE RESTAMPING OF STATION MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ4879 ***********************************************************************
 AJ4879  DESIGNATION -  HAG2 A
 AJ4879  PID         -  AJ4879
 AJ4879  STATE/COUNTY-  MD/WASHINGTON
 AJ4879  COUNTRY     -  US
 AJ4879  USGS QUAD   -  FUNKSTOWN (2017)
 AJ4879
 AJ4879                         *CURRENT SURVEY CONTROL
 AJ4879  ______________________________________________________________________
 AJ4879* NAD 83(2011) POSITION- 39 33 38.62636(N) 077 43 04.97300(W)   ADJUSTED
 AJ4879* NAD 83(2011) ELLIP HT-   113.286 (meters)        (06/27/12)   ADJUSTED
 AJ4879* NAD 83(2011) EPOCH   -  2010.00
 AJ4879* NAVD 88 ORTHO HEIGHT -   147.281 (meters)      483.20  (feet) ADJUSTED
 AJ4879  ______________________________________________________________________
 AJ4879  GEOID HEIGHT    -        -33.984 (meters)                     GEOID18
 AJ4879  NAD 83(2011) X  -  1,047,446.484 (meters)                     COMP
 AJ4879  NAD 83(2011) Y  - -4,811,304.246 (meters)                     COMP
 AJ4879  NAD 83(2011) Z  -  4,040,576.103 (meters)                     COMP
 AJ4879  LAPLACE CORR    -          5.53  (seconds)                    DEFLEC18
 AJ4879  DYNAMIC HEIGHT  -        147.195 (meters)      482.92  (feet) COMP
 AJ4879  MODELED GRAVITY -    980,037.9   (mgal)                       NAVD 88
 AJ4879
 AJ4879  VERT ORDER      -  FIRST     CLASS II
 AJ4879
 AJ4879  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ4879  Standards:
 AJ4879         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ4879            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ4879  -------------------------------------------------------------------
 AJ4879  NETWORK    0.68   2.33           0.31   0.24   1.19      0.02225796
 AJ4879  -------------------------------------------------------------------
 AJ4879  Click here for local accuracies and other accuracy information.
 AJ4879
 AJ4879.This is a reference station for the HAGERSTOWN 1
 AJ4879.National Continuously Operating Reference Station (HAG1).
 AJ4879
 AJ4879.The horizontal coordinates were established by GPS observations
 AJ4879.and adjusted by the National Geodetic Survey in June 2012.
 AJ4879
 AJ4879.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ4879.been affixed to the stable North American tectonic plate. See 
 AJ4879.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ4879
 AJ4879.The horizontal coordinates are valid at the epoch date displayed above
 AJ4879.which is a decimal equivalence of Year/Month/Day.
 AJ4879
 AJ4879.The orthometric height was determined by differential leveling and
 AJ4879.adjusted by the NATIONAL GEODETIC SURVEY
 AJ4879.in July 2002.
 AJ4879
 AJ4879.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ4879.GEOID18 height accuracy estimate available here.
 AJ4879
 AJ4879.Click photographs - Photos may exist for this station.
 AJ4879
 AJ4879.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ4879
 AJ4879.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ4879
 AJ4879.The ellipsoidal height was determined by GPS observations
 AJ4879.and is referenced to NAD 83.
 AJ4879
 AJ4879.The dynamic height is computed by dividing the NAVD 88
 AJ4879.geopotential number by the normal gravity value computed on the
 AJ4879.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ4879.degrees latitude (g = 980.6199 gals.).
 AJ4879
 AJ4879.The modeled gravity was interpolated from observed gravity values.
 AJ4879
 AJ4879. The following values were computed from the NAD 83(2011) position.
 AJ4879
 AJ4879;                    North         East     Units Scale Factor Converg.
 AJ4879;SPC MD       -   210,500.240   338,291.340   MT  1.00002125   -0 27 02.4
 AJ4879;SPC MD       -   690,616.20  1,109,877.50   sFT  1.00002125   -0 27 02.4
 AJ4879;UTM  18      - 4,382,533.372   266,491.701   MT  1.00027137   -1 43 54.8
 AJ4879
 AJ4879!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ4879!SPC MD       -   0.99998223  x   1.00002125  =   1.00000348
 AJ4879!UTM  18      -   0.99998223  x   1.00027137  =   1.00025359
 AJ4879
 AJ4879_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6649182533(NAD 83)
 AJ4879
 AJ4879                          SUPERSEDED SURVEY CONTROL
 AJ4879
 AJ4879  NAD 83(2007)-  39 33 38.62662(N)    077 43 04.97335(W) AD(2002.00) 0
 AJ4879  ELLIP H (02/10/07)  113.316  (m)                       GP(2002.00)    
 AJ4879  ELLIP H (08/09/02)  113.317  (m)                       GP(       ) 3 2
 AJ4879  NAD 83(1991)-  39 33 38.62661(N)    077 43 04.97338(W) AD(       ) B
 AJ4879  ELLIP H (11/06/01)  113.316  (m)                       GP(       ) 4 1
 AJ4879  NAVD 88             147.28   (m)          483.2    (f) LEVELING    3  
 AJ4879
 AJ4879.Superseded values are not recommended for survey control.
 AJ4879
 AJ4879.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ4879.See file dsdata.pdf to determine how the superseded data were derived.
 AJ4879
 AJ4879_MARKER: DH = HORIZONTAL CONTROL DISK
 AJ4879_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 AJ4879_SP_SET: CULVERT WINGWALL
 AJ4879_STAMPING: HAG 2A 2001
 AJ4879_MARK LOGO: NGS
 AJ4879_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ4879_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ4879+STABILITY: SURFACE MOTION
 AJ4879_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ4879+SATELLITE: SATELLITE OBSERVATIONS - October 20, 2010
 AJ4879
 AJ4879  HISTORY     - Date     Condition        Report By
 AJ4879  HISTORY     - 20010402 MONUMENTED       NGS
 AJ4879  HISTORY     - 20010822 GOOD             NGS
 AJ4879  HISTORY     - 20050330 GOOD             DEWDAV
 AJ4879  HISTORY     - 20070925 GOOD             GEOMET
 AJ4879  HISTORY     - 20080414 GOOD             GPSSS
 AJ4879  HISTORY     - 20090418 GOOD             JCLS
 AJ4879  HISTORY     - 20101020 GOOD             JCLS
 AJ4879
 AJ4879                          STATION DESCRIPTION
 AJ4879
 AJ4879'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (JMW)
 AJ4879'4.8 KM SOUTHERLY ALONG STATE HIGHWAY 65 FROM THE JUNCTION OF
 AJ4879'INTERSTATE HIGHWAY 70 (EXIT 29 - SHARPSBURG), THENCE 1.1 KM EASTERLY
 AJ4879'ALONG ROXBURY ROAD, THENCE 0.2 KM SOUTHERLY ALONG A PAVED ROAD, SET
 AJ4879'IN TOP OF A WINGWALL FOR A CULVERT, 8.7 KM WEST OF THE ROAD
 AJ4879'CENTERLINE, 8.5 M NORTHEAST OF THE SOUTH WINGWALL, 1.2 M BELOW THE
 AJ4879'LEVEL OF THE ROAD, 0.4 M SOUTHWEST OF THE SOUTH EDGE OF THE CULVERT.
 AJ4879'NOTE--THIS IS A CORS SITE REFERENCE MARK.
 AJ4879
 AJ4879                          STATION RECOVERY (2001)
 AJ4879
 AJ4879'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (RWA)
 AJ4879'RECOVERED AS DESCRIBED.
 AJ4879
 AJ4879                          STATION RECOVERY (2005)
 AJ4879
 AJ4879'RECOVERY NOTE BY DEWBERRY DAVIS 2005 (KEC)
 AJ4879'RECOVERED IN GOOD CONDITION.
 AJ4879
 AJ4879                          STATION RECOVERY (2007)
 AJ4879
 AJ4879'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2007 (CCG)
 AJ4879'RECOVERED IN GOOD CONDITION.
 AJ4879
 AJ4879                          STATION RECOVERY (2008)
 AJ4879
 AJ4879'RECOVERY NOTE BY GPS SALES AND SERVICES 2008 (DA)
 AJ4879'RECOVERED BY DALE ADAMS OF CLSI
 AJ4879
 AJ4879                          STATION RECOVERY (2009)
 AJ4879
 AJ4879'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2009 (MRY)
 AJ4879'RECOVERED IN GOOD CONDITION.
 AJ4879
 AJ4879                          STATION RECOVERY (2010)
 AJ4879
 AJ4879'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2010
 AJ4879'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ4880 ***********************************************************************
 AJ4880  DESIGNATION -  HAG3 A
 AJ4880  PID         -  AJ4880
 AJ4880  STATE/COUNTY-  MD/WASHINGTON
 AJ4880  COUNTRY     -  US
 AJ4880  USGS QUAD   -  FUNKSTOWN (2017)
 AJ4880
 AJ4880                         *CURRENT SURVEY CONTROL
 AJ4880  ______________________________________________________________________
 AJ4880* NAD 83(2011) POSITION- 39 33 11.93300(N) 077 42 55.29484(W)   ADJUSTED
 AJ4880* NAD 83(2011) ELLIP HT-   117.455 (meters)        (06/27/12)   ADJUSTED
 AJ4880* NAD 83(2011) EPOCH   -  2010.00
 AJ4880* NAVD 88 ORTHO HEIGHT -   151.425 (meters)      496.80  (feet) ADJUSTED
 AJ4880  ______________________________________________________________________
 AJ4880  GEOID HEIGHT    -        -33.960 (meters)                     GEOID18
 AJ4880  NAD 83(2011) X  -  1,047,784.469 (meters)                     COMP
 AJ4880  NAD 83(2011) Y  - -4,811,770.516 (meters)                     COMP
 AJ4880  NAD 83(2011) Z  -  4,039,944.036 (meters)                     COMP
 AJ4880  LAPLACE CORR    -          5.70  (seconds)                    DEFLEC18
 AJ4880  DYNAMIC HEIGHT  -        151.336 (meters)      496.51  (feet) COMP
 AJ4880  MODELED GRAVITY -    980,038.3   (mgal)                       NAVD 88
 AJ4880
 AJ4880  VERT ORDER      -  FIRST     CLASS II
 AJ4880
 AJ4880  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ4880  Standards:
 AJ4880         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ4880            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ4880  -------------------------------------------------------------------
 AJ4880  NETWORK    0.70   2.33           0.32   0.24   1.19      0.02069802
 AJ4880  -------------------------------------------------------------------
 AJ4880  Click here for local accuracies and other accuracy information.
 AJ4880
 AJ4880.This is a reference station for the HAGERSTOWN 1
 AJ4880.National Continuously Operating Reference Station (HAG1).
 AJ4880
 AJ4880.The horizontal coordinates were established by GPS observations
 AJ4880.and adjusted by the National Geodetic Survey in June 2012.
 AJ4880
 AJ4880.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ4880.been affixed to the stable North American tectonic plate. See 
 AJ4880.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ4880
 AJ4880.The horizontal coordinates are valid at the epoch date displayed above
 AJ4880.which is a decimal equivalence of Year/Month/Day.
 AJ4880
 AJ4880.The orthometric height was determined by differential leveling and
 AJ4880.adjusted by the NATIONAL GEODETIC SURVEY
 AJ4880.in July 2002.
 AJ4880
 AJ4880.No vertical observational check was made to the station.
 AJ4880
 AJ4880.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ4880.GEOID18 height accuracy estimate available here.
 AJ4880
 AJ4880.Click photographs - Photos may exist for this station.
 AJ4880
 AJ4880.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ4880
 AJ4880.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ4880
 AJ4880.The ellipsoidal height was determined by GPS observations
 AJ4880.and is referenced to NAD 83.
 AJ4880
 AJ4880.The dynamic height is computed by dividing the NAVD 88
 AJ4880.geopotential number by the normal gravity value computed on the
 AJ4880.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ4880.degrees latitude (g = 980.6199 gals.).
 AJ4880
 AJ4880.The modeled gravity was interpolated from observed gravity values.
 AJ4880
 AJ4880. The following values were computed from the NAD 83(2011) position.
 AJ4880
 AJ4880;                    North         East     Units Scale Factor Converg.
 AJ4880;SPC MD       -   209,675.195   338,515.922   MT  1.00001971   -0 26 56.3
 AJ4880;SPC MD       -   687,909.37  1,110,614.32   sFT  1.00001971   -0 26 56.3
 AJ4880;UTM  18      - 4,381,703.305   266,697.832   MT  1.00027019   -1 43 47.7
 AJ4880
 AJ4880!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ4880!SPC MD       -   0.99998157  x   1.00001971  =   1.00000128
 AJ4880!UTM  18      -   0.99998157  x   1.00027019  =   1.00025176
 AJ4880
 AJ4880_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6669781703(NAD 83)
 AJ4880
 AJ4880|---------------------------------------------------------------------|
 AJ4880| PID    Reference Object                     Distance      Geod. Az  |
 AJ4880|                                                           dddmmss.s |
 AJ4880| AJ4465 HAGERSTOWN 1 CORS ARP               102.975 METERS 09459     |
 AJ4880|---------------------------------------------------------------------|
 AJ4880
 AJ4880                          SUPERSEDED SURVEY CONTROL
 AJ4880
 AJ4880  NAD 83(2007)-  39 33 11.93326(N)    077 42 55.29519(W) AD(2002.00) 0
 AJ4880  ELLIP H (02/10/07)  117.485  (m)                       GP(2002.00)    
 AJ4880  ELLIP H (08/09/02)  117.486  (m)                       GP(       ) 3 2
 AJ4880  NAD 83(1991)-  39 33 11.93325(N)    077 42 55.29522(W) AD(       ) B
 AJ4880  ELLIP H (11/06/01)  117.485  (m)                       GP(       ) 4 1
 AJ4880  NAVD 88             151.43   (m)          496.8    (f) LEVELING    3  
 AJ4880
 AJ4880.Superseded values are not recommended for survey control.
 AJ4880
 AJ4880.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ4880.See file dsdata.pdf to determine how the superseded data were derived.
 AJ4880
 AJ4880_MARKER: DH = HORIZONTAL CONTROL DISK
 AJ4880_SETTING: 66 = SET IN ROCK OUTCROP
 AJ4880_STAMPING: HAG 3A 2001
 AJ4880_MARK LOGO: NGS
 AJ4880_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ4880_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 AJ4880+STABILITY: POSITION/ELEVATION WELL
 AJ4880_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ4880+SATELLITE: SATELLITE OBSERVATIONS - August 21, 2001
 AJ4880
 AJ4880  HISTORY     - Date     Condition        Report By
 AJ4880  HISTORY     - 2001     MONUMENTED       NGS
 AJ4880  HISTORY     - 20010821 GOOD             NGS
 AJ4880
 AJ4880                          STATION DESCRIPTION
 AJ4880
 AJ4880'DESCRIBED BY NATIONAL GEODETIC SURVEY 2001 (RWA)
 AJ4880'3.0 MILES (4.8 KM) SOUTH ALONG STATE HIGHWAY 65 FROM THE INTERSECTION
 AJ4880'OF I-70 AT EXIT 29 (SHARPSBURG) TO THE JUNCTION FOR ROXBURY ROAD, AT
 AJ4880'THE YELLOW FLASHING LIGHTS, THENCE 0.7 MILE (1.1 KM) EAST ALONG
 AJ4880'ROXBURY ROAD TO A CROSSROAD, THENCE 0.2 MILE (0.3 KM) SOUTH ALONG A
 AJ4880'PAVED ROAD TO A T JUNCTION, THENCE 0.2 MILE (0.3 KM) EAST ALONG A
 AJ4880'PAVED ROAD TO A TRIANGLE SHAPED JUNCTION, THENCE 0.1 MILE (0.2 KM)
 AJ4880'SOUTH ALONG A PAVED ROAD TO A T JUNCTION, THENCE 0.05 MI (0.08 KM)
 AJ4880'WEST TO A GRAVEL ROAD ON THE LEFT BETWEEN TWO STONE WALLS BETWEEN TWO
 AJ4880'BARNS, THENCE 0.05 MILE (0.08 KM) SOUTHERLY ALONG GRAVEL ROAD TO A Y
 AJ4880'JUNCTION, THENCE 0.25 MILE (0.40 KM) SOUTH ALONG GRAVEL ROAD TO MARK
 AJ4880'ON LEFT, 54.5 FT (16.6 M) SOUTHWEST OF CENTERLINE OF DIRT ROAD LEADING
 AJ4880'TO THE NDGPS TOWER OWNED BY THE COAST GUARD, 20.0 FT (6.1 M) SOUTHEAST
 AJ4880'OF THE CENTERLINE OF DIRT ROAD, 41.6 FT (12.7 M) SOUTHEAST AND ACROSS
 AJ4880'DIRT ROAD OF A 3 FT (0.9 M) METAL BOX NUMER 11 FOR AN UNDERGROUND
 AJ4880'CABLE, AND 88.0 FT (26.8 M) NORTHEAST AND ACROSS DIRT ROAD OF A
 AJ4880'TELEPHONE POLE WITH ONE GUY WIRE.  MARK IN THE HIGHEST PART OF AN
 AJ4880'EXPOSED BEDROCK, AND 2 FT (0.6 M) ABOVE THE DIRT ROAD.  ALSO 0.15 MI
 AJ4880'(0.24 KM) SOUTH OF BM HAG1 A.
 AJ4880
 AJ4880                          STATION RECOVERY (2001)
 AJ4880
 AJ4880'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (JMW)
 AJ4880'RECOVERED AS DESCRIBED.  THIS IS A CORS SITE REFERENCE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3211 ***********************************************************************
 JV3211  DESIGNATION -  HAGERS
 JV3211  PID         -  JV3211
 JV3211  STATE/COUNTY-  MD/WASHINGTON
 JV3211  COUNTRY     -  US
 JV3211  USGS QUAD   -  HAGERSTOWN (2016)
 JV3211
 JV3211                         *CURRENT SURVEY CONTROL
 JV3211  ______________________________________________________________________
 JV3211* NAD 83(2011) POSITION- 39 39 04.42380(N) 077 44 31.09255(W)   ADJUSTED
 JV3211* NAD 83(2011) ELLIP HT-   172.208 (meters)        (06/27/12)   ADJUSTED
 JV3211* NAD 83(2011) EPOCH   -  2010.00
 JV3211* NAVD 88 ORTHO HEIGHT -   206.402 (meters)      677.17  (feet) ADJUSTED
 JV3211  ______________________________________________________________________
 JV3211  GEOID HEIGHT    -        -34.203 (meters)                     GEOID18
 JV3211  NAD 83(2011) X  -  1,044,087.193 (meters)                     COMP
 JV3211  NAD 83(2011) Y  - -4,805,525.854 (meters)                     COMP
 JV3211  NAD 83(2011) Z  -  4,048,355.188 (meters)                     COMP
 JV3211  LAPLACE CORR    -          3.34  (seconds)                    DEFLEC18
 JV3211  DYNAMIC HEIGHT  -        206.280 (meters)      676.77  (feet) COMP
 JV3211  MODELED GRAVITY -    980,032.9   (mgal)                       NAVD 88
 JV3211
 JV3211  VERT ORDER      -  FIRST     CLASS II
 JV3211
 JV3211  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV3211  Standards:
 JV3211         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV3211            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV3211  -------------------------------------------------------------------
 JV3211  NETWORK    1.29   3.06           0.58   0.46   1.56     -0.00995050
 JV3211  -------------------------------------------------------------------
 JV3211  Click here for local accuracies and other accuracy information.
 JV3211
 JV3211.The horizontal coordinates were established by GPS observations
 JV3211.and adjusted by the National Geodetic Survey in June 2012.
 JV3211
 JV3211.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV3211.been affixed to the stable North American tectonic plate. See 
 JV3211.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV3211
 JV3211.The horizontal coordinates are valid at the epoch date displayed above
 JV3211.which is a decimal equivalence of Year/Month/Day.
 JV3211
 JV3211.The orthometric height was determined by differential leveling and
 JV3211.adjusted by the NATIONAL GEODETIC SURVEY
 JV3211.in June 1991.
 JV3211
 JV3211.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3211.GEOID18 height accuracy estimate available here.
 JV3211
 JV3211.Click photographs - Photos may exist for this station.
 JV3211
 JV3211.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV3211
 JV3211.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3211
 JV3211.The ellipsoidal height was determined by GPS observations
 JV3211.and is referenced to NAD 83.
 JV3211
 JV3211.The dynamic height is computed by dividing the NAVD 88
 JV3211.geopotential number by the normal gravity value computed on the
 JV3211.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3211.degrees latitude (g = 980.6199 gals.).
 JV3211
 JV3211.The modeled gravity was interpolated from observed gravity values.
 JV3211
 JV3211. The following values were computed from the NAD 83(2011) position.
 JV3211
 JV3211;                    North         East     Units Scale Factor Converg.
 JV3211;SPC MD       -   220,564.532   336,317.200   MT  1.00004140   -0 27 56.5
 JV3211;SPC MD       -   723,635.47  1,103,400.68   sFT  1.00004140   -0 27 56.5
 JV3211;SPC PA S     -    35,297.855   600,689.214   MT  1.00005608   +0 00 18.8
 JV3211;SPC PA S     -   115,806.38  1,970,761.20   sFT  1.00005608   +0 00 18.8
 JV3211;SPC WV N     -   129,282.513   750,867.378   MT  0.99994084   +1 07 16.4
 JV3211;SPC WV N     -   424,154.38  2,463,470.72   sFT  0.99994084   +1 07 16.4
 JV3211;UTM  18      - 4,392,641.822   264,742.976   MT  1.00028145   -1 45 01.8
 JV3211
 JV3211!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3211!SPC MD       -   0.99997298  x   1.00004140  =   1.00001438
 JV3211!SPC PA S     -   0.99997298  x   1.00005608  =   1.00002906
 JV3211!SPC WV N     -   0.99997298  x   0.99994084  =   0.99991383
 JV3211!UTM  18      -   0.99997298  x   1.00028145  =   1.00025443
 JV3211
 JV3211:                Primary Azimuth Mark                     Grid Az
 JV3211:SPC MD       -  COFFMAN                                  056 32 23.0
 JV3211:SPC PA S     -  COFFMAN                                  056 04 07.7
 JV3211:SPC WV N     -  COFFMAN                                  054 57 10.1
 JV3211:UTM  18      -  COFFMAN                                  057 49 28.3
 JV3211
 JV3211_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6474292641(NAD 83)
 JV3211
 JV3211|---------------------------------------------------------------------|
 JV3211| PID    Reference Object                     Distance      Geod. Az  |
 JV3211|                                                           dddmmss.s |
 JV3211| JV4713 HAGERSTOWN RADIO STA WJEJ MAST      APPROX. 2.3 KM 0372211.1 |
 JV3211| JV4711 COFFMAN                             APPROX. 2.6 KM 0560426.5 |
 JV3211| JV4703 HAGERSTOWN N AM CEMENT CO STK       APPROX. 5.4 KM 0901216.8 |
 JV3211| CJ9921 HAGERS AZ MK RESET                                 1170925.3 |
 JV3211| JV4714 HAGERSTOWN ST MARYS CATH CH         APPROX. 1.6 KM 1171828.3 |
 JV3211| JV4710 HAGERSTOWN ST JOHNS EPIS CH         APPROX. 1.7 KM 1240348.4 |
 JV3211| JV4715 HAGERSTOWN ST JOHNS LUTH CH         APPROX. 2.1 KM 1251113.2 |
 JV3211| CJ9920 HAGERSTOWN SW TALL BLACK TK BALL                   1495338.6 |
 JV3211| JV4706 HAGERSTOWN WEST MD RR SHOP STK      APPROX. 1.5 KM 1524017.6 |
 JV3211| JV4692 HAGERSTOWN VICTOR PROD CO TANK      APPROX. 3.3 KM 1552255.5 |
 JV3211| JV3210 HAGERS RM 1                          39.654 METERS 18725     |
 JV3211| JV3212 HAGERS RM 2                          11.142 METERS 27159     |
 JV3211| JV4707 NR HAGERS                            27.060 METERS 27309     |
 JV3211|---------------------------------------------------------------------|
 JV3211
 JV3211                          SUPERSEDED SURVEY CONTROL
 JV3211
 JV3211  NAD 83(2007)-  39 39 04.42400(N)    077 44 31.09327(W) AD(2002.00) 0
 JV3211  ELLIP H (02/10/07)  172.236  (m)                       GP(2002.00)    
 JV3211  ELLIP H (06/09/03)  172.189  (m)                       GP(       ) 4 2
 JV3211  ELLIP H (03/16/93)  172.209  (m)                       GP(       ) 4 2
 JV3211  ELLIP H (03/03/93)  172.180  (m)                       GP(       ) 4 2
 JV3211  NAD 83(1991)-  39 39 04.42300(N)    077 44 31.09415(W) AD(       ) 1
 JV3211  NAD 83(1986)-  39 39 04.42242(N)    077 44 31.10464(W) AD(       ) 1
 JV3211  NAD 27      -  39 39 04.07700(N)    077 44 32.12800(W) AD(       ) 1
 JV3211  NGVD 29             206.64   (m)          678.0    (f) LEVELING    3  
 JV3211  NGVD 29 (11/26/84)  206.640  (m)          677.95   (f) ADJUSTED    1 2
 JV3211
 JV3211.Superseded values are not recommended for survey control.
 JV3211
 JV3211.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3211.See file dsdata.pdf to determine how the superseded data were derived.
 JV3211
 JV3211_MARKER: DS = TRIANGULATION STATION DISK
 JV3211_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3211_STAMPING: HAGERS 1935
 JV3211_MARK LOGO: CGS
 JV3211_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV3211_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3211+STABILITY: SURFACE MOTION
 JV3211_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3211+SATELLITE: SATELLITE OBSERVATIONS - April 24, 2002
 JV3211
 JV3211  HISTORY     - Date     Condition        Report By
 JV3211  HISTORY     - 1935     MONUMENTED       CGS
 JV3211  HISTORY     - 1941     GOOD             CGS
 JV3211  HISTORY     - 1955     GOOD             CGS
 JV3211  HISTORY     - 1957     GOOD             CGS
 JV3211  HISTORY     - 1974     GOOD             NGS
 JV3211  HISTORY     - 1979     GOOD             NGS
 JV3211  HISTORY     - 19920722 GOOD             NOS
 JV3211  HISTORY     - 20020424 GOOD             DEWDAV
 JV3211  HISTORY     - 20150723 MARK NOT FOUND   INDIV
 JV3211
 JV3211                          STATION DESCRIPTION
 JV3211
 JV3211'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JB)
 JV3211'STATION IS LOCATED IN THE WESTERN PART OF THE CITY OF HAGERSTOWN,
 JV3211'MD., AT THE CITY WATER SUPPLY RESERVOIR AT THE N END OF PARK AVE.
 JV3211'
 JV3211'STATION MARK IS A STANDARD BRONZE DISK LOCATED 1.77 METERS S OF
 JV3211'THE S EDGE OF THE RIM OF THE RESERVOIR, 3.7 METERS E OF THE E
 JV3211'POST AT THE TOP OF STONE STEPS, 2.9 METERS SE OF THE POINT WHERE
 JV3211'THE CONCRETE WALK JOINS THE RIM OF THE RESERVOIR.  IT PROJECTS 4
 JV3211'INCHES.
 JV3211'
 JV3211'UNDERGROUND MARK IS A BLOCK OF CONCRETE 3 FEET BELOW THE GROUND
 JV3211'CONTAINING AT THE CENTER OF ITS UPPER SURFACE A STANDARD BRONZE
 JV3211'DISK.
 JV3211'
 JV3211'REFERENCE MARK NO.1 IS 39.654 METERS S OF THE STATION.  IT
 JV3211'IS A STANDARD BRONZE DISK SET FLUSH IN CONCRETE WALK LEADING
 JV3211'TO A STONE HOUSE ON THE CORNER OF PARK AVE. AND STREET ON S
 JV3211'SIDE OF THE RESERVOIR.  THE MARK IS 0.4 FOOT W OF THE E END OF
 JV3211'THE CONCRETE WALK, 0.54 FOOT S OF THE N EDGE OF THE CONCRETE
 JV3211'WALK, 4-1/2 PACES W OF THE CENTER OF PARK AVE.
 JV3211'
 JV3211'REFERENCE MARK NO.2 IS 11.140 METERS W OF THE STATION.  IT
 JV3211'IS A STANDARD BRONZE DISK SET IN THE RIM OF THE RESERVOIR, AND
 JV3211'IS 0.2 FOOT N OF THE S EDGE OF THE RIM OF THE RESERVOIR, 4.75
 JV3211'METERS W OF THE POINT WHERE THE W EDGE OF THE CONCRETE WALK
 JV3211'JOINS THE RIM OF THE RESERVOIR.
 JV3211'
 JV3211'NO AZIMUTH MARK WAS SET.  A LARGE BLACK TANK WAS CUT IN
 JV3211'(FOUR POSITIONS).  THIS TANK IS LOCATED JUST SW OF THE BUSINESS
 JV3211'SECTION OF THE CITY, THE TOP BEING JUST VISIBLE OVER THE TOP OF
 JV3211'A RESIDENCE A FEW BLOCKS AWAY.  THE TANK IS APPROXIMATELY 1.3
 JV3211'MILES (AIR LINE) FROM THE STATION.
 JV3211'
 JV3211'TO REACH FROM WESTERN JUNCTION OF ROUTES U.S. 11 AND 40, GO W ON
 JV3211'NO 40 1.1 MILES TO PARK AVE., TURN RIGHT (N) ON PARK AVE. AND GO
 JV3211'0.2 MILE TO THE RESERVOIR AND THE STATION.
 JV3211'
 JV3211'A 37 FOOT TOWER WAS USED AND CLEARED ALL LINES.
 JV3211
 JV3211                          STATION RECOVERY (1941)
 JV3211
 JV3211'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941
 JV3211'AT HAGERSTOWN.
 JV3211'AT HAGERSTOWN AND AT THE CITY RESERVIOR, AT THE SOUTH END 12.5
 JV3211'FEET EAST OF THE EAST STONE POST AT THE TOP OF THE STEPS, 6
 JV3211'FEET SOUTH OF THE IRON FENCE AROUND THE RESERVIOR, 110 FEET
 JV3211'NORTHEAST OF THE NORTHEAST CORNER OF THE STONE HOUSE AT THE
 JV3211'SOUTH END OF RESERVIOR.  A TRIANGULATION STATION DISK STAMPED
 JV3211'HAGERS 1935 AND SET IN THE TOP OF A CONCRETE POST.
 JV3211
 JV3211                          STATION RECOVERY (1955)
 JV3211
 JV3211'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV3211'THE STATION, REFERENCE MARKS 1 AND 2 WERE RECOVERED AND FOUND
 JV3211'TO BE IN GOOD CONDITION.  THE BLACK TANK THAT WAS USED AS AN
 JV3211'AZIMUTH MARK WAS NOT VISIBLE, THEREFORE A NEW AZIMUTH MARK WAS
 JV3211'ESTABLISHED AT THIS TIME.  THE DESCRIPTION IS ADEQUATE AND
 JV3211'CORRECT.
 JV3211'
 JV3211'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTH ON PARK
 JV3211'AVENUE FOR 0.05 MILE, TURN LEFT ON WATERMAN STREET AND GO EAST
 JV3211'FOR 0.1 MILE TO THE MARK ON THE LEFT AS DESCRIBED--THE MARK IS
 JV3211'LOCATED IN THE SOUTHEAST EDGE OF THE HAGERSTOWN CITY PARK, 49 FEET
 JV3211'NORTH OF THE NORTH END OF A STONE WALL, 19 FEET EAST OF THE
 JV3211'CENTER OF A SIDEWALK, 10 FEET SOUTHWEST OF A POWERLINE POLE AND 6
 JV3211'FEET WEST OF A HEDGE.  IT IS CEMENTED IN A DRILL HOLE IN
 JV3211'OUTCROPPING BEDROCK, AND THE DISK IS STAMPED HAGERS 1955.
 JV3211'
 JV3211'HEIGHT OF LIGHT ABOVE STATION MARK 14 METERS.
 JV3211
 JV3211                          STATION RECOVERY (1957)
 JV3211
 JV3211'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV3211'STATION RECOVERED AS DESCRIBED AND ALL MARKS FOUND IN GOOD
 JV3211'CONDITION EXCEPT AZIMUTH MARK WAS FOUND WITH DISK BROKEN AND ONLY
 JV3211'THE BRONZE STEM REMAINING.  HOWEVER THE STEM WAS SOLID AND STILL
 JV3211'IN PLACE AND IS BELIEVED TO BE IN GOOD ENOUGH CONDITION TO SERVE
 JV3211'AS AZIMUTH MARK.  A CHECK WAS MADE OF THE DISTANCE AND DIRECTION
 JV3211'TO MARKS AND FOUND TO BE CORRECT EXCEPT A SLIGHT DIFFERENCE WAS
 JV3211'FOUND IN THE DIRECTION TO AZIMUTH MARK AND DISTANCE TO
 JV3211'REFERENCE MARK NO. 1.  HOWEVER THE ERROR IN DISTANCE TO
 JV3211'REFERENCE MARK NO. 1 IS BELIEVED TO BE A TYPOGRAPHICAL ERROR.
 JV3211'
 JV3211'A TRAVERSE CONNECTION WAS MADE TO USGS BENCH MARK AND THE
 JV3211'DISTANCE IS SHOWN BELOW.
 JV3211'
 JV3211'TO REACH FROM THE JUNCTION OF WEST BOUND U.S. HIGHWAY NO. 40 AND
 JV3211'SOUTH BOUND U.S. HIGHWAY NO. 11 IN HAGERSTOWN, GO WEST ON
 JV3211'U.S. HIGHWAY NO. 40 FOR 1.1 MILES TO SIDE ROAD RIGHT (PARK
 JV3211'AVENUE).  TURN RIGHT AND GO NORTHERLY ON PARK AVENUE FOR 0.2 MILE
 JV3211'TO GATE AT RESERVOIR.  PASS THROUGH GATE AND PROCEED TO TOP OF
 JV3211'STEPS TO STATION ON RIGHT (EAST) SIDE OF STEPS AND JUST SOUTH OF
 JV3211'WALL AROUND RESERVOIR.
 JV3211'
 JV3211'NOTE--KEY TO GATE CAN BE OBTAINED FROM HOUSE AT RESERVOIR.
 JV3211
 JV3211                          STATION RECOVERY (1974)
 JV3211
 JV3211'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV3211'THE STATION MARK, REFERENCE MARKS 1 AND 2 AND THE AZIMUTH MARK
 JV3211'WERE RECOVERED.  ALL WERE IN GOOD CONDITION WITH THE EXCEPTION OF
 JV3211'THE AZIMUTH MARK.  IT WAS FOUND TO HAVE BEEN CUT OFF OF THE
 JV3211'STEM.  THE STEM STILL REMAINS IN GOOD SHAPE AND IS STANDING
 JV3211'STRAIGHT IN THE DRILL HOLE.  NO ATTEMPT WAS MADE TO ESTABLISH
 JV3211'A NEW AZIMUTH MARK.  THE STEM IS FOR A LIMITED AZIMUTH AND THERE
 JV3211'ARE ALSO SEVERAL INTERSECTION STATION IN THE AREA WHICH MAY BE USED
 JV3211'AS AN AZIMUTH.
 JV3211'
 JV3211'THE FORMER DESCRIPTION OF THE STATION IS ADEQUATE.
 JV3211'
 JV3211'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV3211'IN NORTHWEST PART OF HAGERSTOWN.
 JV3211
 JV3211                          STATION RECOVERY (1979)
 JV3211
 JV3211'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3211'RECOVERED IN GOOD CONDITION.
 JV3211
 JV3211                          STATION RECOVERY (1992)
 JV3211
 JV3211'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JV3211'STATION IS LOCATED IN THE WESTERN PART OF THE CITY OF HAGERSTOWN, MD.,
 JV3211'AT THE CITY WATER SUPPLY RESERVOIR AT THE N END OF PARK AVE.
 JV3211'TO REACH FROM THE JUNCTION OF WEST BOUND US HIGHWAY NO. 40 AND SOUTH
 JV3211'BOUND US HIGHWAY NO. 11 IN HAGERSTOWN, GO WEST ON US HIGHWAY NO. 40 FO
 JV3211'1.1 MI (1.8 KM) TO SIDE ROAD RIGHT (PARK AVE.).  TURN RIGHT AND GO
 JV3211'NORTHERLY ON PARK AVE. FOR 0.2 MI (0.3 KM) TO GATE  AT RESERVOIR.  PAS
 JV3211'THROUGH GATE AND PROCEED TO TOP OF STEPS TO STATION ON RIGHT (EAST)
 JV3211'SIDE OF STEPS AND JUST SOUTH OF WALL AROUND RESERVOIR.
 JV3211'STATION MARK IS A STANDARD BRONZE DISK
 JV3211'LOCATED 1.77 M (5.81 FT) SOUTH OF THE SOUTH EDGE OF THE RIM
 JV3211'OF THE RESERVOIR, 3.7 M (12.1 FT) M EAST OF THE EAST POST AT THE
 JV3211'TOP OF STONE STEPS, 2.9 M (9.5 FT) SOUTHEAST OF THE POINT WHERE
 JV3211'THE CONCRETE WALK JOINS THE RIM OF THE RESERVOIR.  IT PROJECTS 4
 JV3211'INCHES.
 JV3211
 JV3211                          STATION RECOVERY (2002)
 JV3211
 JV3211'RECOVERY NOTE BY DEWBERRY DAVIS 2002 (KC)
 JV3211'RECOVERED IN GOOD CONDITION.
 JV3211
 JV3211                          STATION RECOVERY (2015)
 JV3211
 JV3211'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2015 (WRA)
 JV3211'MARK IS DESTROYED.
 JV3211'NOT RECOVERED
 JV3211'SITE HAS BEEN RENOVATED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3210 ***********************************************************************
 JV3210  DESIGNATION -  HAGERS RM 1
 JV3210  PID         -  JV3210
 JV3210  STATE/COUNTY-  MD/WASHINGTON
 JV3210  COUNTRY     -  US
 JV3210  USGS QUAD   -  HAGERSTOWN (2016)
 JV3210
 JV3210                         *CURRENT SURVEY CONTROL
 JV3210  ______________________________________________________________________
 JV3210* NAD 83(1986) POSITION- 39 39 03.15   (N) 077 44 31.31   (W)   HD_HELD1
 JV3210* NAVD 88 ORTHO HEIGHT -   201.857 (meters)      662.26  (feet) ADJUSTED
 JV3210  ______________________________________________________________________
 JV3210  GEOID HEIGHT    -        -34.203 (meters)                     GEOID18
 JV3210  DYNAMIC HEIGHT  -        201.738 (meters)      661.87  (feet) COMP
 JV3210  MODELED GRAVITY -    980,032.9   (mgal)                       NAVD 88
 JV3210
 JV3210  VERT ORDER      -  FIRST     CLASS II
 JV3210
 JV3210.The horizontal coordinates were determined by differentially corrected
 JV3210.hand held GPS observations or other comparable positioning techniques
 JV3210.and have an estimated accuracy of +/- 3 meters.
 JV3210
 JV3210.The orthometric height was determined by differential leveling and
 JV3210.adjusted by the NATIONAL GEODETIC SURVEY
 JV3210.in June 1991.
 JV3210
 JV3210.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3210.GEOID18 height accuracy estimate available here.
 JV3210
 JV3210.Click photographs - Photos may exist for this station.
 JV3210
 JV3210.The dynamic height is computed by dividing the NAVD 88
 JV3210.geopotential number by the normal gravity value computed on the
 JV3210.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3210.degrees latitude (g = 980.6199 gals.).
 JV3210
 JV3210.The modeled gravity was interpolated from observed gravity values.
 JV3210
 JV3210;                    North         East    Units  Estimated Accuracy
 JV3210;SPC MD       -   220,525.3     336,311.7     MT  (+/- 3 meters HH1 GPS) 
 JV3210
 JV3210_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6473692602(NAD 83)
 JV3210
 JV3210                          SUPERSEDED SURVEY CONTROL
 JV3210
 JV3210  NGVD 29 (11/26/84)  202.056  (m)          662.91   (f) ADJUSTED    1 2
 JV3210
 JV3210.Superseded values are not recommended for survey control.
 JV3210
 JV3210.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3210.See file dsdata.pdf to determine how the superseded data were derived.
 JV3210
 JV3210_MARKER: DR = REFERENCE MARK DISK
 JV3210_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV3210_SP_SET: SIDEWALK
 JV3210_STAMPING: HAGERS NO 1 1935
 JV3210_MARK LOGO: CGS
 JV3210_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3210_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3210+SATELLITE: SATELLITE OBSERVATIONS - February 10, 2008
 JV3210
 JV3210  HISTORY     - Date     Condition        Report By
 JV3210  HISTORY     - 1935     MONUMENTED       CGS
 JV3210  HISTORY     - 1941     GOOD             CGS
 JV3210  HISTORY     - 1979     GOOD             NGS
 JV3210  HISTORY     - 1986     GOOD             USPSQD
 JV3210  HISTORY     - 20050823 GOOD             GEOCAC
 JV3210  HISTORY     - 20080210 GOOD             GEOCAC
 JV3210
 JV3210                          STATION DESCRIPTION
 JV3210
 JV3210'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV3210'AT HAGERSTOWN.
 JV3210'AT HAGERSTOWN AND AT THE CITY RESERVIOR, AT THE NORTH END
 JV3210'OF PARK AVENUE, 20 FEET WEST OF THE CENTERLINE OF THE AVENUE,
 JV3210'135 FEET SOUTH OF THE STATION, 41.6 FEET SOUTHEAST OF THE
 JV3210'NORTHEAST CORNER OF STONE HOUSE, AND 0.4 FEET WEST OF THE EAST
 JV3210'END, AND 0.5 FEET SOUTH OF THE NORTH EDGE.  A STANDARD
 JV3210'TRIANGULATION REFERENCE MARK DISK STAMPED, HAGERS NO. 1 1935
 JV3210'AND SET IN THE CONCRETE SIDEWALK.
 JV3210
 JV3210                          STATION RECOVERY (1979)
 JV3210
 JV3210'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3210'RECOVERED IN GOOD CONDITION.
 JV3210
 JV3210                          STATION RECOVERY (1986)
 JV3210
 JV3210'RECOVERY NOTE BY US POWER SQUADRON 1986 (WPG)
 JV3210'RECOVERED IN GOOD CONDITION.
 JV3210
 JV3210                          STATION RECOVERY (2005)
 JV3210
 JV3210'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 JV3210'FOUND AS DESCRIBED IN THE NORTHEAST CORNER OF A CONCRETE SIDEWALK
 JV3210'LEADING TO AN ABANDONED AND BOARDED-UP STONE HOUSE. THE MARK IS AT THE
 JV3210'TOP OF A SHORT FLIGHT OF FIVE STONE STEPS AND IMMEDIATELY SOUTH OF THE
 JV3210'RESERVOIR.
 JV3210
 JV3210                          STATION RECOVERY (2008)
 JV3210
 JV3210'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3210'HOUSE IS NOW OCCUPIED AND POSTED AS PRIVATE PROPERTY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3212 ***********************************************************************
 JV3212  DESIGNATION -  HAGERS RM 2
 JV3212  PID         -  JV3212
 JV3212  STATE/COUNTY-  MD/WASHINGTON
 JV3212  COUNTRY     -  US
 JV3212  USGS QUAD   -  HAGERSTOWN (2016)
 JV3212
 JV3212                         *CURRENT SURVEY CONTROL
 JV3212  ______________________________________________________________________
 JV3212* NAD 83(1986) POSITION- 39 39 04.44   (N) 077 44 31.56   (W)   HD_HELD1
 JV3212* NAVD 88 ORTHO HEIGHT -   206.605 (meters)      677.84  (feet) ADJUSTED
 JV3212  ______________________________________________________________________
 JV3212  GEOID HEIGHT    -        -34.203 (meters)                     GEOID18
 JV3212  DYNAMIC HEIGHT  -        206.483 (meters)      677.44  (feet) COMP
 JV3212  MODELED GRAVITY -    980,032.9   (mgal)                       NAVD 88
 JV3212
 JV3212  VERT ORDER      -  FIRST     CLASS II
 JV3212
 JV3212.The horizontal coordinates were determined by differentially corrected
 JV3212.hand held GPS observations or other comparable positioning techniques
 JV3212.and have an estimated accuracy of +/- 3 meters.
 JV3212
 JV3212.The orthometric height was determined by differential leveling and
 JV3212.adjusted by the NATIONAL GEODETIC SURVEY
 JV3212.in June 1991.
 JV3212
 JV3212.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3212.GEOID18 height accuracy estimate available here.
 JV3212
 JV3212.Click photographs - Photos may exist for this station.
 JV3212
 JV3212.The dynamic height is computed by dividing the NAVD 88
 JV3212.geopotential number by the normal gravity value computed on the
 JV3212.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3212.degrees latitude (g = 980.6199 gals.).
 JV3212
 JV3212.The modeled gravity was interpolated from observed gravity values.
 JV3212
 JV3212;                    North         East    Units  Estimated Accuracy
 JV3212;SPC MD       -   220,565.1     336,306.1     MT  (+/- 3 meters HH1 GPS) 
 JV3212
 JV3212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6473192642(NAD 83)
 JV3212
 JV3212                          SUPERSEDED SURVEY CONTROL
 JV3212
 JV3212  NGVD 29 (11/26/84)  206.816  (m)          678.53   (f) ADJUSTED    1 2
 JV3212
 JV3212.Superseded values are not recommended for survey control.
 JV3212
 JV3212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3212.See file dsdata.pdf to determine how the superseded data were derived.
 JV3212
 JV3212_MARKER: DS = TRIANGULATION STATION DISK
 JV3212_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV3212_SP_SET: WALL
 JV3212_STAMPING: HAGERS NO 2 1935
 JV3212_MARK LOGO: CGS
 JV3212_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3212+STABILITY: SURFACE MOTION
 JV3212
 JV3212  HISTORY     - Date     Condition        Report By
 JV3212  HISTORY     - 1935     MONUMENTED       CGS
 JV3212  HISTORY     - 1941     GOOD             CGS
 JV3212  HISTORY     - 1979     GOOD             NGS
 JV3212
 JV3212                          STATION DESCRIPTION
 JV3212
 JV3212'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV3212'AT HAGERSTOWN.
 JV3212'AT HAGERSTOWN, AT THE CITY RESERVIOR, 36.6 FEET WEST OF THE
 JV3212'STATION, 21 FEET NORTHWEST OF THE WEST STONE POST AT THE
 JV3212'TOP OF THE STEPS, 102.4 FEET NORTH OF THE NORTHEAST CORNER OF
 JV3212'THE STONE HOUSE SOUTH END OF THE RESERVIOR.  A STANDARD
 JV3212'TRIANGULATION STATION DISK STAMPED HAGERS NO. 2 1935 AND
 JV3212'SET IN THE STONE CURBING OF THE RESERVIOR WALL AT THE SOUTH END.
 JV3212
 JV3212                          STATION RECOVERY (1979)
 JV3212
 JV3212'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3212'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ4465 ***********************************************************************
 AJ4465  CORS        -  This is a GPS Continuously Operating Reference Station.
 AJ4465  DESIGNATION -  HAGERSTOWN 1 CORS ARP
 AJ4465  CORS_ID     -  HAG1
 AJ4465  PID         -  AJ4465
 AJ4465  STATE/COUNTY-  MD/WASHINGTON
 AJ4465  COUNTRY     -  US
 AJ4465  USGS QUAD   -  FUNKSTOWN (2017)
 AJ4465
 AJ4465                         *CURRENT SURVEY CONTROL
 AJ4465  ______________________________________________________________________
 AJ4465* NAD 83(2011) POSITION- 39 33 11.64313(N) 077 42 50.99749(W)   ADJUSTED
 AJ4465* NAD 83(2011) ELLIP HT-   122.236 (meters)        (04/??/25)   ADJUSTED
 AJ4465* NAD 83(2011) EPOCH   -  2010.00
 AJ4465  ______________________________________________________________________
 AJ4465  GEOID HEIGHT    -        -33.956 (meters)                     GEOID18
 AJ4465  NAD 83(2011) X  -  1,047,886.714 (meters)                     COMP
 AJ4465  NAD 83(2011) Y  - -4,811,757.849 (meters)                     COMP
 AJ4465  NAD 83(2011) Z  -  4,039,940.188 (meters)                     COMP
 AJ4465
 AJ4465  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ4465  Standards:
 AJ4465         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ4465            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ4465  -------------------------------------------------------------------
 AJ4465  NETWORK    0.05   0.11           0.03   0.01   0.06      0.31263600
 AJ4465  -------------------------------------------------------------------
 AJ4465
 AJ4465.The coordinates were established by GPS observations
 AJ4465.and adjusted by the National Geodetic Survey in April 2025.
 AJ4465
 AJ4465.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ4465.been affixed to the stable North American Tectonic Plate. 
 AJ4465
 AJ4465.The coordinates are valid at the epoch date displayed above
 AJ4465.which is a decimal equivalence of Year/Month/Day.
 AJ4465
 AJ4465.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 AJ4465.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 AJ4465.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 AJ4465.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 AJ4465.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 AJ4465.published epoch of 2010.00.
 AJ4465
 AJ4465.Additional information on MYCS is available at:
 AJ4465.https://geodesy.noaa.gov/CORS/index.shtml
 AJ4465
 AJ4465.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ4465.GEOID18 height accuracy estimate available here.
 AJ4465
 AJ4465.The PID for the CORS L1 Phase Center is AJ4466.
 AJ4465
 AJ4465.Click photographs - Photos may exist for this station.
 AJ4465
 AJ4465.The XYZ, and position/ellipsoidal ht. are equivalent.
 AJ4465
 AJ4465.The ellipsoidal height was determined by GPS observations
 AJ4465.and is referenced to NAD 83.
 AJ4465
 AJ4465. The following values were computed from the NAD 83(2011) position.
 AJ4465
 AJ4465;                    North         East     Units Scale Factor Converg.
 AJ4465;SPC MD       -   209,665.452   338,618.447   MT  1.00001969   -0 26 53.6
 AJ4465;SPC MD       -   687,877.40  1,110,950.69   sFT  1.00001969   -0 26 53.6
 AJ4465;UTM  18      - 4,381,691.270   266,800.140   MT  1.00026960   -1 43 44.9
 AJ4465
 AJ4465!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ4465!SPC MD       -   0.99998082  x   1.00001969  =   1.00000051
 AJ4465!UTM  18      -   0.99998082  x   1.00026960  =   1.00025042
 AJ4465
 AJ4465_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6680081691(NAD 83)
 AJ4465
 AJ4465                          SUPERSEDED SURVEY CONTROL
 AJ4465
 AJ4465  NAD 83(2011)-  39 33 11.64327(N)    077 42 50.99763(W) AD(2010.00) c
 AJ4465  ELLIP H (06/??/19)  122.234  (m)                       GP(2010.00) c c
 AJ4465  NAD 83(2011)-  39 33 11.64296(N)    077 42 50.99794(W) AD(2010.00) c
 AJ4465  NAD 83(2011)-  39 33 11.64329(N)    077 42 50.99758(W) AD(2010.00) c
 AJ4465  ELLIP H (08/??/11)  122.245  (m)                       GP(2010.00) c c
 AJ4465  NAD 83(2007)-  39 33 11.64322(N)    077 42 50.99829(W) AD(2002.00) c
 AJ4465  NAD 83(CORS)-  39 33 11.64322(N)    077 42 50.99829(W) AD(2002.00) c
 AJ4465  ELLIP H (03/??/02)  122.264  (m)                       GP(2002.00) c c
 AJ4465  NAD 83(CORS)-  39 33 11.64322(N)    077 42 50.99828(W) AD(1997.00) c
 AJ4465  ELLIP H (07/??/01)  122.264  (m)                       GP(1997.00) c c
 AJ4465
 AJ4465.Superseded values are not recommended for survey control.
 AJ4465
 AJ4465.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ4465.See file dsdata.pdf to determine how the superseded data were derived.
 AJ4465
 AJ4465_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 AJ4465
 AJ4465                          STATION DESCRIPTION
 AJ4465
 AJ4465'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 AJ4465'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 AJ4465'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 AJ4465'AND LOG FILES ACCESSIBLE AT:
 AJ4465'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ4467 ***********************************************************************
 AJ4467  CORS        -  This is a GPS Continuously Operating Reference Station.
 AJ4467  DESIGNATION -  HAGERSTOWN 2 CORS ARP
 AJ4467  CORS_ID     -  HAG2
 AJ4467  PID         -  AJ4467
 AJ4467  STATE/COUNTY-  MD/WASHINGTON
 AJ4467  COUNTRY     -  US
 AJ4467  USGS QUAD   -  FUNKSTOWN (2017)
 AJ4467
 AJ4467                         *CURRENT SURVEY CONTROL
 AJ4467  ______________________________________________________________________
 AJ4467* NAD 83(2011) POSITION- 39 33 12.48324(N) 077 42 50.75185(W)   ADJUSTED
 AJ4467* NAD 83(2011) ELLIP HT-   122.400 (meters)        (04/??/25)   ADJUSTED
 AJ4467* NAD 83(2011) EPOCH   -  2010.00
 AJ4467  ______________________________________________________________________
 AJ4467  GEOID HEIGHT    -        -33.957 (meters)                     GEOID18
 AJ4467  NAD 83(2011) X  -  1,047,888.960 (meters)                     COMP
 AJ4467  NAD 83(2011) Y  - -4,811,740.603 (meters)                     COMP
 AJ4467  NAD 83(2011) Z  -  4,039,960.270 (meters)                     COMP
 AJ4467
 AJ4467  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ4467  Standards:
 AJ4467         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ4467            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ4467  -------------------------------------------------------------------
 AJ4467  NETWORK    0.10   0.26           0.04   0.04   0.14     -0.15375100
 AJ4467  -------------------------------------------------------------------
 AJ4467
 AJ4467.The coordinates were established by GPS observations
 AJ4467.and adjusted by the National Geodetic Survey in April 2025.
 AJ4467
 AJ4467.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ4467.been affixed to the stable North American Tectonic Plate. 
 AJ4467
 AJ4467.The coordinates are valid at the epoch date displayed above
 AJ4467.which is a decimal equivalence of Year/Month/Day.
 AJ4467
 AJ4467.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 AJ4467.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 AJ4467.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 AJ4467.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 AJ4467.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 AJ4467.published epoch of 2010.00.
 AJ4467
 AJ4467.Additional information on MYCS is available at:
 AJ4467.https://geodesy.noaa.gov/CORS/index.shtml
 AJ4467
 AJ4467.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ4467.GEOID18 height accuracy estimate available here.
 AJ4467
 AJ4467.The PID for the CORS L1 Phase Center is AJ4468.
 AJ4467
 AJ4467.Click photographs - Photos may exist for this station.
 AJ4467
 AJ4467.The XYZ, and position/ellipsoidal ht. are equivalent.
 AJ4467
 AJ4467.The ellipsoidal height was determined by GPS observations
 AJ4467.and is referenced to NAD 83.
 AJ4467
 AJ4467. The following values were computed from the NAD 83(2011) position.
 AJ4467
 AJ4467;                    North         East     Units Scale Factor Converg.
 AJ4467;SPC MD       -   209,691.316   338,624.514   MT  1.00001974   -0 26 53.5
 AJ4467;SPC MD       -   687,962.26  1,110,970.59   sFT  1.00001974   -0 26 53.5
 AJ4467;UTM  18      - 4,381,716.997   266,806.785   MT  1.00026956   -1 43 44.8
 AJ4467
 AJ4467!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ4467!SPC MD       -   0.99998080  x   1.00001974  =   1.00000054
 AJ4467!UTM  18      -   0.99998080  x   1.00026956  =   1.00025035
 AJ4467
 AJ4467_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6680681716(NAD 83)
 AJ4467
 AJ4467                          SUPERSEDED SURVEY CONTROL
 AJ4467
 AJ4467  NAD 83(2011)-  39 33 12.48336(N)    077 42 50.75199(W) AD(2010.00) c
 AJ4467  ELLIP H (06/??/19)  122.403  (m)                       GP(2010.00) c c
 AJ4467  NAD 83(2011)-  39 33 12.48321(N)    077 42 50.75190(W) AD(2010.00) c
 AJ4467  NAD 83(2011)-  39 33 12.48333(N)    077 42 50.75190(W) AD(2010.00) c
 AJ4467  ELLIP H (08/??/11)  122.400  (m)                       GP(2010.00) c c
 AJ4467  NAD 83(2007)-  39 33 12.48326(N)    077 42 50.75275(W) AD(2002.00) c
 AJ4467  NAD 83(CORS)-  39 33 12.48326(N)    077 42 50.75275(W) AD(2002.00) c
 AJ4467  ELLIP H (03/??/02)  122.423  (m)                       GP(2002.00) c c
 AJ4467  NAD 83(CORS)-  39 33 12.48326(N)    077 42 50.75274(W) AD(1997.00) c
 AJ4467  ELLIP H (07/??/01)  122.423  (m)                       GP(1997.00) c c
 AJ4467
 AJ4467.Superseded values are not recommended for survey control.
 AJ4467
 AJ4467.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ4467.See file dsdata.pdf to determine how the superseded data were derived.
 AJ4467
 AJ4467_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 AJ4467
 AJ4467                          STATION DESCRIPTION
 AJ4467
 AJ4467'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 AJ4467'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 AJ4467'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 AJ4467'AND LOG FILES ACCESSIBLE AT:
 AJ4467'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DO2484 ***********************************************************************
 DO2484  CORS        -  This is a GPS Continuously Operating Reference Station.
 DO2484  DESIGNATION -  HAGERSTOWN 5 CORS ARP
 DO2484  CORS_ID     -  HAG5
 DO2484  PID         -  DO2484
 DO2484  STATE/COUNTY-  MD/WASHINGTON
 DO2484  COUNTRY     -  US
 DO2484  USGS QUAD   -  FUNKSTOWN (2017)
 DO2484
 DO2484                         *CURRENT SURVEY CONTROL
 DO2484  ______________________________________________________________________
 DO2484* NAD 83(2011) POSITION- 39 33 11.64306(N) 077 42 50.99766(W)   ADJUSTED
 DO2484* NAD 83(2011) ELLIP HT-   122.408 (meters)        (04/??/25)   ADJUSTED
 DO2484* NAD 83(2011) EPOCH   -  2010.00
 DO2484  ______________________________________________________________________
 DO2484  GEOID HEIGHT    -        -33.956 (meters)                     GEOID18
 DO2484  NAD 83(2011) X  -  1,047,886.739 (meters)                     COMP
 DO2484  NAD 83(2011) Y  - -4,811,757.981 (meters)                     COMP
 DO2484  NAD 83(2011) Z  -  4,039,940.296 (meters)                     COMP
 DO2484
 DO2484  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DO2484  Standards:
 DO2484         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DO2484            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DO2484  -------------------------------------------------------------------
 DO2484  NETWORK    0.04   0.05           0.01   0.02   0.03     -0.21372300
 DO2484  -------------------------------------------------------------------
 DO2484
 DO2484.The coordinates were established by GPS observations
 DO2484.and adjusted by the National Geodetic Survey in April 2025.
 DO2484
 DO2484.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DO2484.been affixed to the stable North American Tectonic Plate. 
 DO2484
 DO2484.The coordinates are valid at the epoch date displayed above
 DO2484.which is a decimal equivalence of Year/Month/Day.
 DO2484
 DO2484.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DO2484.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DO2484.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DO2484.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DO2484.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DO2484.published epoch of 2010.00.
 DO2484
 DO2484.Additional information on MYCS is available at:
 DO2484.https://geodesy.noaa.gov/CORS/index.shtml
 DO2484
 DO2484.Significant digits in the geoid height do not necessarily reflect accuracy.
 DO2484.GEOID18 height accuracy estimate available here.
 DO2484
 DO2484.The PID for the CORS L1 Phase Center is DO2485.
 DO2484
 DO2484.Click photographs - Photos may exist for this station.
 DO2484
 DO2484.The XYZ, and position/ellipsoidal ht. are equivalent.
 DO2484
 DO2484.The ellipsoidal height was determined by GPS observations
 DO2484.and is referenced to NAD 83.
 DO2484
 DO2484. The following values were computed from the NAD 83(2011) position.
 DO2484
 DO2484;                    North         East     Units Scale Factor Converg.
 DO2484;SPC MD       -   209,665.450   338,618.443   MT  1.00001969   -0 26 53.6
 DO2484;SPC MD       -   687,877.40  1,110,950.68   sFT  1.00001969   -0 26 53.6
 DO2484;UTM  18      - 4,381,691.268   266,800.136   MT  1.00026960   -1 43 44.9
 DO2484
 DO2484!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DO2484!SPC MD       -   0.99998080  x   1.00001969  =   1.00000049
 DO2484!UTM  18      -   0.99998080  x   1.00026960  =   1.00025039
 DO2484
 DO2484_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6680081691(NAD 83)
 DO2484
 DO2484                          SUPERSEDED SURVEY CONTROL
 DO2484
 DO2484  NAD 83(2011)-  39 33 11.64319(N)    077 42 50.99762(W) AD(2010.00) c
 DO2484  ELLIP H (06/??/19)  122.400  (m)                       GP(2010.00) c c
 DO2484  NAD 83(2011)-  39 33 11.64313(N)    077 42 50.99760(W) AD(2010.00) c
 DO2484  ELLIP H (12/??/12)  122.404  (m)                       GP(2010.00) c c
 DO2484
 DO2484.Superseded values are not recommended for survey control.
 DO2484
 DO2484.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DO2484.See file dsdata.pdf to determine how the superseded data were derived.
 DO2484
 DO2484_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 DO2484
 DO2484                          STATION DESCRIPTION
 DO2484
 DO2484'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 DO2484'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 DO2484'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 DO2484'AND LOG FILES ACCESSIBLE AT:
 DO2484'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ6125 ***********************************************************************
 DJ6125  CORS        -  This is a GPS Continuously Operating Reference Station.
 DJ6125  DESIGNATION -  HAGERSTOWN 6 CORS ARP
 DJ6125  CORS_ID     -  HAG6
 DJ6125  PID         -  DJ6125
 DJ6125  STATE/COUNTY-  MD/WASHINGTON
 DJ6125  COUNTRY     -  US
 DJ6125  USGS QUAD   -  FUNKSTOWN (2017)
 DJ6125
 DJ6125                         *CURRENT SURVEY CONTROL
 DJ6125  ______________________________________________________________________
 DJ6125* NAD 83(2011) POSITION- 39 33 12.48321(N) 077 42 50.75204(W)   ADJUSTED
 DJ6125* NAD 83(2011) ELLIP HT-   122.554 (meters)        (04/??/25)   ADJUSTED
 DJ6125* NAD 83(2011) EPOCH   -  2010.00
 DJ6125  ______________________________________________________________________
 DJ6125  GEOID HEIGHT    -        -33.957 (meters)                     GEOID18
 DJ6125  NAD 83(2011) X  -  1,047,888.981 (meters)                     COMP
 DJ6125  NAD 83(2011) Y  - -4,811,740.721 (meters)                     COMP
 DJ6125  NAD 83(2011) Z  -  4,039,960.367 (meters)                     COMP
 DJ6125
 DJ6125  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ6125  Standards:
 DJ6125         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ6125            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ6125  -------------------------------------------------------------------
 DJ6125  NETWORK    0.04   0.10           0.02   0.02   0.05     -0.09371600
 DJ6125  -------------------------------------------------------------------
 DJ6125
 DJ6125.The coordinates were established by GPS observations
 DJ6125.and adjusted by the National Geodetic Survey in April 2025.
 DJ6125
 DJ6125.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ6125.been affixed to the stable North American Tectonic Plate. 
 DJ6125
 DJ6125.The coordinates are valid at the epoch date displayed above
 DJ6125.which is a decimal equivalence of Year/Month/Day.
 DJ6125
 DJ6125.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 DJ6125.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 DJ6125.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 DJ6125.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 DJ6125.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 DJ6125.published epoch of 2010.00.
 DJ6125
 DJ6125.Additional information on MYCS is available at:
 DJ6125.https://geodesy.noaa.gov/CORS/index.shtml
 DJ6125
 DJ6125.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ6125.GEOID18 height accuracy estimate available here.
 DJ6125
 DJ6125.The PID for the CORS L1 Phase Center is DJ6126.
 DJ6125
 DJ6125.Click photographs - Photos may exist for this station.
 DJ6125
 DJ6125.The XYZ, and position/ellipsoidal ht. are equivalent.
 DJ6125
 DJ6125.The ellipsoidal height was determined by GPS observations
 DJ6125.and is referenced to NAD 83.
 DJ6125
 DJ6125. The following values were computed from the NAD 83(2011) position.
 DJ6125
 DJ6125;                    North         East     Units Scale Factor Converg.
 DJ6125;SPC MD       -   209,691.315   338,624.510   MT  1.00001974   -0 26 53.5
 DJ6125;SPC MD       -   687,962.26  1,110,970.58   sFT  1.00001974   -0 26 53.5
 DJ6125;UTM  18      - 4,381,716.996   266,806.781   MT  1.00026956   -1 43 44.8
 DJ6125
 DJ6125!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ6125!SPC MD       -   0.99998077  x   1.00001974  =   1.00000051
 DJ6125!UTM  18      -   0.99998077  x   1.00026956  =   1.00025033
 DJ6125
 DJ6125_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6680681716(NAD 83)
 DJ6125
 DJ6125                          SUPERSEDED SURVEY CONTROL
 DJ6125
 DJ6125  NAD 83(2011)-  39 33 12.48332(N)    077 42 50.75194(W) AD(2010.00) c
 DJ6125  ELLIP H (06/??/19)  122.559  (m)                       GP(2010.00) c c
 DJ6125  NAD 83(2011)-  39 33 12.48355(N)    077 42 50.75187(W) AD(2010.00) c
 DJ6125  NAD 83(2011)-  39 33 12.48334(N)    077 42 50.75193(W) AD(2010.00) c
 DJ6125  ELLIP H (08/??/11)  122.555  (m)                       GP(2010.00) c c
 DJ6125  NAD 83(CORS)-  39 33 12.48349(N)    077 42 50.75259(W) AD(2002.00) c
 DJ6125  ELLIP H (12/??/07)  122.578  (m)                       GP(2002.00) c c
 DJ6125
 DJ6125.Superseded values are not recommended for survey control.
 DJ6125
 DJ6125.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ6125.See file dsdata.pdf to determine how the superseded data were derived.
 DJ6125
 DJ6125_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 DJ6125
 DJ6125                          STATION DESCRIPTION
 DJ6125
 DJ6125'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 DJ6125'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 DJ6125'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 DJ6125'AND LOG FILES ACCESSIBLE AT:
 DJ6125'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ6818 ***********************************************************************
 AJ6818  CORS        -  This is a GPS Continuously Operating Reference Station.
 AJ6818  DESIGNATION -  HAGERSTOWN COMMUN CORS ARP
 AJ6818  CORS_ID     -  HTCC
 AJ6818  PID         -  AJ6818
 AJ6818  STATE/COUNTY-  MD/WASHINGTON
 AJ6818  COUNTRY     -  US
 AJ6818  USGS QUAD   -  HAGERSTOWN (2016)
 AJ6818
 AJ6818                         *CURRENT SURVEY CONTROL
 AJ6818  ______________________________________________________________________
 AJ6818* NAD 83(2011) POSITION- 39 37 56.00152(N) 077 40 02.60216(W)   ADJUSTED
 AJ6818* NAD 83(2011) ELLIP HT-   147.611 (meters)        (04/??/25)   ADJUSTED
 AJ6818* NAD 83(2011) EPOCH   -  2010.00
 AJ6818  ______________________________________________________________________
 AJ6818  GEOID HEIGHT    -        -33.995 (meters)                     GEOID18
 AJ6818  NAD 83(2011) X  -  1,050,625.065 (meters)                     COMP
 AJ6818  NAD 83(2011) Y  - -4,805,459.465 (meters)                     COMP
 AJ6818  NAD 83(2011) Z  -  4,046,714.486 (meters)                     COMP
 AJ6818
 AJ6818  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ6818  Standards:
 AJ6818         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ6818            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ6818  -------------------------------------------------------------------
 AJ6818  NETWORK    0.08   0.27           0.04   0.03   0.14     -0.00361200
 AJ6818  -------------------------------------------------------------------
 AJ6818
 AJ6818.The coordinates were established by GPS observations
 AJ6818.and adjusted by the National Geodetic Survey in April 2025.
 AJ6818
 AJ6818.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ6818.been affixed to the stable North American Tectonic Plate. 
 AJ6818
 AJ6818.The coordinates are valid at the epoch date displayed above
 AJ6818.which is a decimal equivalence of Year/Month/Day.
 AJ6818
 AJ6818.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 AJ6818.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 AJ6818.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 AJ6818.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 AJ6818.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 AJ6818.published epoch of 2010.00.
 AJ6818
 AJ6818.Additional information on MYCS is available at:
 AJ6818.https://geodesy.noaa.gov/CORS/index.shtml
 AJ6818
 AJ6818.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ6818.GEOID18 height accuracy estimate available here.
 AJ6818
 AJ6818.The PID for the CORS L1 Phase Center is AJ6819.
 AJ6818
 AJ6818.Click photographs - Photos may exist for this station.
 AJ6818
 AJ6818.The XYZ, and position/ellipsoidal ht. are equivalent.
 AJ6818
 AJ6818.The ellipsoidal height was determined by GPS observations
 AJ6818.and is referenced to NAD 83.
 AJ6818
 AJ6818. The following values were computed from the NAD 83(2011) position.
 AJ6818
 AJ6818;                    North         East     Units Scale Factor Converg.
 AJ6818;SPC MD       -   218,404.878   342,702.861   MT  1.00003696   -0 25 08.0
 AJ6818;SPC MD       -   716,550.00  1,124,350.97   sFT  1.00003696   -0 25 08.0
 AJ6818;UTM  18      - 4,390,339.100   271,080.057   MT  1.00024523   -1 42 07.7
 AJ6818
 AJ6818!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ6818!SPC MD       -   0.99997684  x   1.00003696  =   1.00001380
 AJ6818!UTM  18      -   0.99997684  x   1.00024523  =   1.00022207
 AJ6818
 AJ6818_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ7108090339(NAD 83)
 AJ6818
 AJ6818                          SUPERSEDED SURVEY CONTROL
 AJ6818
 AJ6818  NAD 83(2011)-  39 37 56.00164(N)    077 40 02.60206(W) AD(2010.00) c
 AJ6818  ELLIP H (06/??/19)  147.614  (m)                       GP(2010.00) c c
 AJ6818  NAD 83(2011)-  39 37 56.00171(N)    077 40 02.60205(W) AD(2010.00) c
 AJ6818  NAD 83(2011)-  39 37 56.00165(N)    077 40 02.60206(W) AD(2010.00) c
 AJ6818  ELLIP H (08/??/11)  147.610  (m)                       GP(2010.00) c c
 AJ6818  NAD 83(2007)-  39 37 56.00190(N)    077 40 02.60288(W) AD(2002.00) c
 AJ6818  NAD 83(CORS)-  39 37 56.00190(N)    077 40 02.60288(W) AD(2002.00) c
 AJ6818  ELLIP H (03/??/02)  147.648  (m)                       GP(2002.00) c c
 AJ6818  NAD 83(CORS)-  39 37 56.00190(N)    077 40 02.60287(W) AD(1997.00) c
 AJ6818  ELLIP H (11/??/01)  147.648  (m)                       GP(1997.00) c c
 AJ6818
 AJ6818.Superseded values are not recommended for survey control.
 AJ6818
 AJ6818.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ6818.See file dsdata.pdf to determine how the superseded data were derived.
 AJ6818
 AJ6818_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 AJ6818
 AJ6818                          STATION DESCRIPTION
 AJ6818
 AJ6818'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 AJ6818'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 AJ6818'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 AJ6818'AND LOG FILES ACCESSIBLE AT:
 AJ6818'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4705 ***********************************************************************
 JV4705  DESIGNATION -  HAGERSTOWN RADIO STA WARK MAST
 JV4705  PID         -  JV4705
 JV4705  STATE/COUNTY-  MD/WASHINGTON
 JV4705  COUNTRY     -  US
 JV4705  USGS QUAD   -  HAGERSTOWN (2016)
 JV4705
 JV4705                         *CURRENT SURVEY CONTROL
 JV4705  ______________________________________________________________________
 JV4705* NAD 83(1991) POSITION- 39 37 36.20042(N) 077 42 37.81520(W)   ADJUSTED
 JV4705  ______________________________________________________________________
 JV4705  GEOID HEIGHT    -        -34.103 (meters)                     GEOID18
 JV4705  LAPLACE CORR    -          4.59  (seconds)                    DEFLEC18
 JV4705  HORZ ORDER      -  THIRD
 JV4705
 JV4705.The horizontal coordinates were established by classical geodetic methods
 JV4705.and adjusted by the National Geodetic Survey in January 1992.
 JV4705
 JV4705.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4705.GEOID18 height accuracy estimate available here.
 JV4705
 JV4705.Click photographs - Photos may exist for this station.
 JV4705
 JV4705.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4705
 JV4705. The following values were computed from the NAD 83(1991) position.
 JV4705
 JV4705;                    North         East     Units Scale Factor Converg.
 JV4705;SPC MD       -   217,822.124   338,996.667   MT  1.00003570   -0 26 45.4
 JV4705;SPC MD       -   714,638.09  1,112,191.56   sFT  1.00003570   -0 26 45.4
 JV4705;SPC PA S     -    32,577.522   603,391.200   MT  1.00006208   +0 01 32.2
 JV4705;SPC PA S     -   106,881.42  1,979,625.96   sFT  1.00006208   +0 01 32.2
 JV4705;SPC WV N     -   126,615.629   753,621.501   MT  0.99994074   +1 08 28.7
 JV4705;SPC WV N     -   415,404.78  2,472,506.54   sFT  0.99994074   +1 08 28.7
 JV4705;UTM  18      - 4,389,839.394   267,360.924   MT  1.00026637   -1 43 46.2
 JV4705
 JV4705_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6736089839(NAD 83)
 JV4705
 JV4705                          SUPERSEDED SURVEY CONTROL
 JV4705
 JV4705  NAD 83(1986)-  39 37 36.20043(N)    077 42 37.82585(W) AD(       ) 3
 JV4705  NAD 27      -  39 37 35.85400(N)    077 42 38.84900(W) AD(       ) 3
 JV4705
 JV4705.Superseded values are not recommended for survey control.
 JV4705
 JV4705.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4705.See file dsdata.pdf to determine how the superseded data were derived.
 JV4705
 JV4705_MARKER: 42 = RADIO/TV MAST
 JV4705_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4705+SATELLITE: SATELLITE OBSERVATIONS - March 27, 2008
 JV4705
 JV4705  HISTORY     - Date     Condition        Report By
 JV4705  HISTORY     - 1955     FIRST OBSERVED   CGS
 JV4705  HISTORY     - 1958     GOOD             CGS
 JV4705  HISTORY     - 1974     GOOD             NGS
 JV4705  HISTORY     - 1988     GOOD             USPSQD
 JV4705  HISTORY     - 20080327 GOOD             GEOCAC
 JV4705
 JV4705                          STATION DESCRIPTION
 JV4705
 JV4705'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4705'THE STATION IS LOCATED ABOUT 1-1/2 MILES SOUTH OF THE CENTER OF
 JV4705'THE BUSINESS DISTRICT OF HAGERSTOWN.  IT IS CONSTRUCTED OF
 JV4705'STRUCTURAL STEEL, ABOUT 200 FEET HIGH AND IS PAINTED RED AND WHITE
 JV4705'IN ALTERNATE SECTIONS.  THE POINT OBSERVED WAS THE TOP OF THE
 JV4705'MAST.
 JV4705
 JV4705                          STATION RECOVERY (1958)
 JV4705
 JV4705'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4705'RECOVERED AS DESCRIBED IN 1955.
 JV4705'
 JV4705'OFFICE NOTE--ACCORDING TO J.B. FERGUSON AND CO. INC. THE RADIO
 JV4705'MAST HAD BEEN MOVED IN 1956.  A NEW POSITION WAS COMPUTED IN 1958.
 JV4705
 JV4705                          STATION RECOVERY (1974)
 JV4705
 JV4705'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV4705'THE STATION IS LOCATED IN THE SOUTHEAST PART OF HAGERSTOWN,
 JV4705'ABOUT 1 MILE NORTH OF INTERSTATE HIGHWAY 70 AND 3/4 MILE WEST
 JV4705'OF U.S. HIGHWAY 40.  IT IS A TRIANGULAR SHAPED STEEL STRUCTURE
 JV4705'PAINTED RED AND WHITE AND THE POINT INTERSECTED IS THE RED LIGHT
 JV4705'ATOP THE TOWER.  IT IS ABOUT 300 FEET IN HEIGHT AND OWNED BY
 JV4705'HAGERSTOWN RADIO STATION WARK.
 JV4705'
 JV4705'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4705'IN SOUTHEAST PART OF HAGERSTOWN.
 JV4705
 JV4705                          STATION RECOVERY (1988)
 JV4705
 JV4705'RECOVERY NOTE BY US POWER SQUADRON 1988 (WPG)
 JV4705'RECOVERED IN GOOD CONDITION.
 JV4705
 JV4705                          STATION RECOVERY (2008)
 JV4705
 JV4705'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV4705'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4713 ***********************************************************************
 JV4713  DESIGNATION -  HAGERSTOWN RADIO STA WJEJ MAST
 JV4713  PID         -  JV4713
 JV4713  STATE/COUNTY-  MD/WASHINGTON
 JV4713  COUNTRY     -  US
 JV4713  USGS QUAD   -  HAGERSTOWN (2016)
 JV4713
 JV4713                         *CURRENT SURVEY CONTROL
 JV4713  ______________________________________________________________________
 JV4713* NAD 83(1991) POSITION- 39 40 04.30462(N) 077 43 31.91380(W)   ADJUSTED
 JV4713  ______________________________________________________________________
 JV4713  GEOID HEIGHT    -        -34.201 (meters)                     GEOID18
 JV4713  LAPLACE CORR    -          3.24  (seconds)                    DEFLEC18
 JV4713  HORZ ORDER      -  THIRD
 JV4713
 JV4713.The horizontal coordinates were established by classical geodetic methods
 JV4713.and adjusted by the National Geodetic Survey in January 1992.
 JV4713
 JV4713.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4713.GEOID18 height accuracy estimate available here.
 JV4713
 JV4713.Click photographs - Photos may exist for this station.
 JV4713
 JV4713.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4713
 JV4713. The following values were computed from the NAD 83(1991) position.
 JV4713
 JV4713;                    North         East     Units Scale Factor Converg.
 JV4713;SPC MD       -   222,400.006   337,742.758   MT  1.00004538   -0 27 19.3
 JV4713;SPC MD       -   729,657.35  1,108,077.70   sFT  1.00004538   -0 27 19.3
 JV4713;SPC PA S     -    37,145.007   602,099.648   MT  1.00005211   +0 00 57.1
 JV4713;SPC PA S     -   121,866.58  1,975,388.60   sFT  1.00005211   +0 00 57.1
 JV4713;SPC WV N     -   131,156.572   752,241.415   MT  0.99994101   +1 07 54.1
 JV4713;SPC WV N     -   430,302.85  2,467,978.71   sFT  0.99994101   +1 07 54.1
 JV4713;UTM  18      - 4,394,445.287   266,209.679   MT  1.00027298   -1 44 26.1
 JV4713
 JV4713_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6620994445(NAD 83)
 JV4713
 JV4713                          SUPERSEDED SURVEY CONTROL
 JV4713
 JV4713  NAD 83(1986)-  39 40 04.30403(N)    077 43 31.92489(W) AD(       ) 3
 JV4713  NAD 27      -  39 40 03.96100(N)    077 43 32.94800(W) AD(       ) 3
 JV4713
 JV4713.Superseded values are not recommended for survey control.
 JV4713
 JV4713.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4713.See file dsdata.pdf to determine how the superseded data were derived.
 JV4713
 JV4713_MARKER: 42 = RADIO/TV MAST
 JV4713_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4713+SATELLITE: SATELLITE OBSERVATIONS - May 12, 2007
 JV4713
 JV4713  HISTORY     - Date     Condition        Report By
 JV4713  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4713  HISTORY     - 1964     GOOD             CGS
 JV4713  HISTORY     - 20070512 GOOD             GEOCAC
 JV4713
 JV4713                          STATION DESCRIPTION
 JV4713
 JV4713'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4713'THIS STATION IS A RADIO MAST ON THE GROUNDS OF RADIO STATION
 JV4713'WJEJ ABOUT 1.7 MILES N OF HAGERSTOWN AND 0.3 MILE W OF U.S.
 JV4713'HIGHWAY 11.
 JV4713'
 JV4713'THE MAST IS OF STEEL TRUSSWORK CONSTRUCTION AND IS ABOUT 190 FEET
 JV4713'HIGH AND PAINTED ORANGE AND BLACK IN ALTERNATE SECTIONS.
 JV4713
 JV4713                          STATION RECOVERY (1964)
 JV4713
 JV4713'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (EP)
 JV4713'STATION RECOVERED AS DESCRIBED AND FOUND IN GOOD CONDITION.
 JV4713
 JV4713                          STATION RECOVERY (2007)
 JV4713
 JV4713'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV4713'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4710 ***********************************************************************
 JV4710  DESIGNATION -  HAGERSTOWN ST JOHNS EPIS CH
 JV4710  PID         -  JV4710
 JV4710  STATE/COUNTY-  MD/WASHINGTON
 JV4710  COUNTRY     -  US
 JV4710  USGS QUAD   -  HAGERSTOWN (2016)
 JV4710
 JV4710                         *CURRENT SURVEY CONTROL
 JV4710  ______________________________________________________________________
 JV4710* NAD 83(1991) POSITION- 39 38 33.56850(N) 077 43 32.07578(W)   ADJUSTED
 JV4710  ______________________________________________________________________
 JV4710  GEOID HEIGHT    -        -34.161 (meters)                     GEOID18
 JV4710  LAPLACE CORR    -          3.61  (seconds)                    DEFLEC18
 JV4710  HORZ ORDER      -  THIRD
 JV4710
 JV4710.The horizontal coordinates were established by classical geodetic methods
 JV4710.and adjusted by the National Geodetic Survey in January 1992.
 JV4710
 JV4710.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4710.GEOID18 height accuracy estimate available here.
 JV4710
 JV4710.Click photographs - Photos may exist for this station.
 JV4710
 JV4710.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4710
 JV4710. The following values were computed from the NAD 83(1991) position.
 JV4710
 JV4710;                    North         East     Units Scale Factor Converg.
 JV4710;SPC MD       -   219,601.603   337,716.654   MT  1.00003939   -0 27 19.4
 JV4710;SPC MD       -   720,476.26  1,107,992.06   sFT  1.00003939   -0 27 19.4
 JV4710;SPC PA S     -    34,346.449   602,096.561   MT  1.00005816   +0 00 57.0
 JV4710;SPC PA S     -   112,684.97  1,975,378.47   sFT  1.00005816   +0 00 57.0
 JV4710;SPC WV N     -   128,358.803   752,292.821   MT  0.99994078   +1 07 54.0
 JV4710;SPC WV N     -   421,123.84  2,468,147.36   sFT  0.99994078   +1 07 54.0
 JV4710;UTM  18      - 4,391,647.527   266,120.817   MT  1.00027349   -1 44 22.9
 JV4710
 JV4710_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6612091647(NAD 83)
 JV4710
 JV4710                          SUPERSEDED SURVEY CONTROL
 JV4710
 JV4710  NAD 83(1986)-  39 38 33.56832(N)    077 43 32.08646(W) AD(       ) 3
 JV4710  NAD 27      -  39 38 33.22600(N)    077 43 33.11600(W) AD(       ) 3
 JV4710
 JV4710.Superseded values are not recommended for survey control.
 JV4710
 JV4710.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4710.See file dsdata.pdf to determine how the superseded data were derived.
 JV4710
 JV4710_MARKER: 90 = CHURCH SPIRE
 JV4710_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4710+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2007
 JV4710
 JV4710  HISTORY     - Date     Condition        Report By
 JV4710  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4710  HISTORY     - 1955     GOOD             CGS
 JV4710  HISTORY     - 1988     GOOD             USPSQD
 JV4710  HISTORY     - 20050823 GOOD             GEOCAC
 JV4710  HISTORY     - 20070320 GOOD             GEOCAC
 JV4710
 JV4710                          STATION DESCRIPTION
 JV4710
 JV4710'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4710'THIS STATION IS A SPIRE ON THE ST. JOHNS EPISCOPAL CHURCH IN THE
 JV4710'CITY OF HAGERSTOWN, MARYLAND.  IT IS LOCATED ON THE CORNER OF
 JV4710'ANTIETAM AND S PROSPECT STREET.  THE CHURCH IS OF WHITE STONE
 JV4710'CONSTRUCTION AND HAS A STONE TOWER ABOUT 50 FEET HIGH, ON THIS
 JV4710'THERE IS A TALL WHITE STONE SPIRE ABOUT 60 FEET HIGH AND HAS AN
 JV4710'ORNAMENTAL FINIAL AT ITS APEX.
 JV4710'
 JV4710'THE TOTAL HEIGHT IS ABOUT 110 FEET AND IS QUITE PROMINENT.
 JV4710
 JV4710                          STATION RECOVERY (1955)
 JV4710
 JV4710'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4710'THE STATION WAS VISITED AND FOUND IN GOOD CONDITION.  THE ORIGINAL
 JV4710'DESCRIPTION IS ADEQUATE AND CORRECT.
 JV4710
 JV4710                          STATION RECOVERY (1988)
 JV4710
 JV4710'RECOVERY NOTE BY US POWER SQUADRON 1988 (WPG)
 JV4710'RECOVERED IN GOOD CONDITION.
 JV4710
 JV4710                          STATION RECOVERY (2005)
 JV4710
 JV4710'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 JV4710'RECOVERED IN GOOD CONDITION.
 JV4710
 JV4710                          STATION RECOVERY (2007)
 JV4710
 JV4710'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV4710'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4715 ***********************************************************************
 JV4715  DESIGNATION -  HAGERSTOWN ST JOHNS LUTH CH
 JV4715  PID         -  JV4715
 JV4715  STATE/COUNTY-  MD/WASHINGTON
 JV4715  COUNTRY     -  US
 JV4715  USGS QUAD   -  HAGERSTOWN (2016)
 JV4715
 JV4715                         *CURRENT SURVEY CONTROL
 JV4715  ______________________________________________________________________
 JV4715* NAD 83(1991) POSITION- 39 38 25.11509(N) 077 43 19.00024(W)   ADJUSTED
 JV4715  ______________________________________________________________________
 JV4715  GEOID HEIGHT    -        -34.151 (meters)                     GEOID18
 JV4715  LAPLACE CORR    -          3.73  (seconds)                    DEFLEC18
 JV4715  HORZ ORDER      -  THIRD
 JV4715
 JV4715.The horizontal coordinates were established by classical geodetic methods
 JV4715.and adjusted by the National Geodetic Survey in January 1992.
 JV4715
 JV4715.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4715.GEOID18 height accuracy estimate available here.
 JV4715
 JV4715.Click photographs - Photos may exist for this station.
 JV4715
 JV4715.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4715
 JV4715. The following values were computed from the NAD 83(1991) position.
 JV4715
 JV4715;                    North         East     Units Scale Factor Converg.
 JV4715;SPC MD       -   219,338.417   338,026.364   MT  1.00003884   -0 27 11.2
 JV4715;SPC MD       -   719,612.79  1,109,008.16   sFT  1.00003884   -0 27 11.2
 JV4715;UTM  18      - 4,391,377.403   266,424.621   MT  1.00027174   -1 44 14.3
 JV4715
 JV4715_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6642491377(NAD 83)
 JV4715
 JV4715                          SUPERSEDED SURVEY CONTROL
 JV4715
 JV4715  NAD 83(1986)-  39 38 25.11541(N)    077 43 19.01009(W) AD(       ) 3
 JV4715  NAD 27      -  39 38 24.76700(N)    077 43 20.03500(W) AD(       ) 3
 JV4715
 JV4715.Superseded values are not recommended for survey control.
 JV4715
 JV4715.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4715.See file dsdata.pdf to determine how the superseded data were derived.
 JV4715
 JV4715_MARKER: 90 = CHURCH SPIRE
 JV4715_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4715+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2007
 JV4715
 JV4715  HISTORY     - Date     Condition        Report By
 JV4715  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4715  HISTORY     - 1955     GOOD             CGS
 JV4715  HISTORY     - 1988     GOOD             USPSQD
 JV4715  HISTORY     - 20070320 GOOD             GEOCAC
 JV4715
 JV4715                          STATION DESCRIPTION
 JV4715
 JV4715'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4715'THIS STATION IS A SPIRE ON THE ST. JOHNS LUTHERAN CHURCH IN THE
 JV4715'CITY OF HAGERSTOWN, MARYLAND.  IT IS LOCATED ON W ANTIETAM STREET.
 JV4715'
 JV4715'CHURCH IS OF BRICK CONSTRUCTION AND HAS A BRICK TOWER AT THE N END
 JV4715'ABOUT 40 FEET HIGH, ON THIS THERE IS AN OPEN WOOD BELFRY PAINTED
 JV4715'WHITE ABOUT 20 FEET HIGH, ON THIS THERE IS A TALL GRAY SHINGLED
 JV4715'SPIRE ABOUT 35 FEET HIGH AND HAS AN ORNAMENTAL FINIAL AT ITS
 JV4715'APEX.  THE TOTAL HEIGHT IS ABOUT 95 FEET.
 JV4715
 JV4715                          STATION RECOVERY (1955)
 JV4715
 JV4715'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4715'THE STATION WAS VISITED AND FOUND TO BE IN GOOD CONDITION.  THE
 JV4715'ORIGINAL DESCRIPTION IS ADEQUATE AND CORRECT.
 JV4715
 JV4715                          STATION RECOVERY (1988)
 JV4715
 JV4715'RECOVERY NOTE BY US POWER SQUADRON 1988 (WPG)
 JV4715'RECOVERED IN GOOD CONDITION.
 JV4715
 JV4715                          STATION RECOVERY (2007)
 JV4715
 JV4715'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV4715'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4714 ***********************************************************************
 JV4714  DESIGNATION -  HAGERSTOWN ST MARYS CATH CH
 JV4714  PID         -  JV4714
 JV4714  STATE/COUNTY-  MD/WASHINGTON
 JV4714  COUNTRY     -  US
 JV4714  USGS QUAD   -  HAGERSTOWN (2016)
 JV4714
 JV4714                         *CURRENT SURVEY CONTROL
 JV4714  ______________________________________________________________________
 JV4714* NAD 83(1991) POSITION- 39 38 40.13722(N) 077 43 30.26321(W)   ADJUSTED
 JV4714  ______________________________________________________________________
 JV4714  GEOID HEIGHT    -        -34.163 (meters)                     GEOID18
 JV4714  LAPLACE CORR    -          3.60  (seconds)                    DEFLEC18
 JV4714  HORZ ORDER      -  THIRD
 JV4714
 JV4714.The horizontal coordinates were established by classical geodetic methods
 JV4714.and adjusted by the National Geodetic Survey in January 1992.
 JV4714
 JV4714.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4714.GEOID18 height accuracy estimate available here.
 JV4714
 JV4714.Click photographs - Photos may exist for this station.
 JV4714
 JV4714.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4714
 JV4714. The following values were computed from the NAD 83(1991) position.
 JV4714
 JV4714;                    North         East     Units Scale Factor Converg.
 JV4714;SPC MD       -   219,803.847   337,761.482   MT  1.00003981   -0 27 18.3
 JV4714;SPC MD       -   721,139.79  1,108,139.13   sFT  1.00003981   -0 27 18.3
 JV4714;SPC PA S     -    34,549.059   602,139.724   MT  1.00005771   +0 00 58.2
 JV4714;SPC PA S     -   113,349.70  1,975,520.08   sFT  1.00005771   +0 00 58.2
 JV4714;SPC WV N     -   128,562.192   752,332.026   MT  0.99994079   +1 07 55.2
 JV4714;SPC WV N     -   421,791.12  2,468,275.99   sFT  0.99994079   +1 07 55.2
 JV4714;UTM  18      - 4,391,848.763   266,170.178   MT  1.00027321   -1 44 22.0
 JV4714
 JV4714_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6617091848(NAD 83)
 JV4714
 JV4714                          SUPERSEDED SURVEY CONTROL
 JV4714
 JV4714  NAD 83(1986)-  39 38 40.13692(N)    077 43 30.27394(W) AD(       ) 3
 JV4714  NAD 27      -  39 38 39.79000(N)    077 43 31.29800(W) AD(       ) 3
 JV4714
 JV4714.Superseded values are not recommended for survey control.
 JV4714
 JV4714.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4714.See file dsdata.pdf to determine how the superseded data were derived.
 JV4714
 JV4714_MARKER: 90 = CHURCH SPIRE
 JV4714_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4714+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2007
 JV4714
 JV4714  HISTORY     - Date     Condition        Report By
 JV4714  HISTORY     - 1955     FIRST OBSERVED   CGS
 JV4714  HISTORY     - 20050823 GOOD             GEOCAC
 JV4714  HISTORY     - 20070320 GOOD             GEOCAC
 JV4714
 JV4714                          STATION DESCRIPTION
 JV4714
 JV4714'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4714'THE STATION IS LOCATED ON THE CORNER OF W WASHINGTON AND N
 JV4714'WALNUT STREETS IN THE CITY OF HAGERSTOWN.  IT IS ABOUT 120 FEET
 JV4714'HIGH AND IS QUITE PROMINENT.  THE CHURCH IS OF RED BRICK
 JV4714'CONSTRUCTION AND THE SPIRE IS ON THE SOUTH END OF THE ROOF.  THE
 JV4714'POINT OBSERVED WAS THE SMALL CROSS AT THE APEX OF THE SPIRE.
 JV4714'
 JV4714'A HAGERSTOWN CHURCH SPIRE WAS LISTED BUT NOT DESCRIBED IN
 JV4714'1939.  IT IS BELIEVED THAT THIS IS THE SAME SPIRE.
 JV4714
 JV4714                          STATION RECOVERY (2005)
 JV4714
 JV4714'RECOVERY NOTE BY GEOCACHING 2005 (APC)
 JV4714'FOUND AS DESCRIBED ON THE NORTHEAST CORNER OF WASHINGTON AND WALNUT
 JV4714'STREETS.
 JV4714
 JV4714                          STATION RECOVERY (2007)
 JV4714
 JV4714'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV4714'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0464 ***********************************************************************
 JV0464  DESIGNATION -  HAHA
 JV0464  PID         -  JV0464
 JV0464  STATE/COUNTY-  MD/HARFORD
 JV0464  COUNTRY     -  US
 JV0464  USGS QUAD   -  EDGEWOOD (2016)
 JV0464
 JV0464                         *CURRENT SURVEY CONTROL
 JV0464  ______________________________________________________________________
 JV0464* NAD 83(1991) POSITION- 39 27 40.84934(N) 076 18 48.42132(W)   ADJUSTED
 JV0464* NAVD 88 ORTHO HEIGHT -    52.599 (meters)      172.57  (feet) ADJUSTED
 JV0464  ______________________________________________________________________
 JV0464  GEOID HEIGHT    -        -33.034 (meters)                     GEOID18
 JV0464  LAPLACE CORR    -         -3.11  (seconds)                    DEFLEC18
 JV0464  DYNAMIC HEIGHT  -         52.571 (meters)      172.48  (feet) COMP
 JV0464  MODELED GRAVITY -    980,107.4   (mgal)                       NAVD 88
 JV0464
 JV0464  HORZ ORDER      -  SECOND
 JV0464  VERT ORDER      -  SECOND    CLASS 0
 JV0464
 JV0464.The horizontal coordinates were established by classical geodetic methods
 JV0464.and adjusted by the National Geodetic Survey in January 1992.
 JV0464
 JV0464.The orthometric height was determined by differential leveling and
 JV0464.adjusted by the NATIONAL GEODETIC SURVEY
 JV0464.in June 1991.
 JV0464
 JV0464.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0464.GEOID18 height accuracy estimate available here.
 JV0464
 JV0464.Click photographs - Photos may exist for this station.
 JV0464
 JV0464.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0464
 JV0464.The dynamic height is computed by dividing the NAVD 88
 JV0464.geopotential number by the normal gravity value computed on the
 JV0464.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0464.degrees latitude (g = 980.6199 gals.).
 JV0464
 JV0464.The modeled gravity was interpolated from observed gravity values.
 JV0464
 JV0464. The following values were computed from the NAD 83(1991) position.
 JV0464
 JV0464;                    North         East     Units Scale Factor Converg.
 JV0464;SPC MD       -   199,445.634   459,084.738   MT  1.00000200   +0 25 51.2
 JV0464;SPC MD       -   654,347.88  1,506,180.51   sFT  1.00000200   +0 25 51.2
 JV0464;UTM  18      - 4,368,798.004   387,006.384   MT  0.99975720   -0 50 05.5
 JV0464
 JV0464!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0464!SPC MD       -   0.99999693  x   1.00000200  =   0.99999893
 JV0464!UTM  18      -   0.99999693  x   0.99975720  =   0.99975413
 JV0464
 JV0464:                Primary Azimuth Mark                     Grid Az
 JV0464:SPC MD       -  OSBORNES RUIN 4                          080 01 40.6
 JV0464:UTM  18      -  OSBORNES RUIN 4                          081 17 37.3
 JV0464
 JV0464_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8700668798(NAD 83)
 JV0464
 JV0464|---------------------------------------------------------------------|
 JV0464| PID    Reference Object                     Distance      Geod. Az  |
 JV0464|                                                           dddmmss.s |
 JV0464| JV0393 OSBORNES RUIN 4                     APPROX. 2.8 KM 0802731.8 |
 JV0464| JV0463 HAHA RM 1                            34.875 METERS 13743     |
 JV0464| JV5313 EDGEWOOD HARFORD MANOR TANK         APPROX. 4.5 KM 1685447.6 |
 JV0464| CA9486 HAHA RM 3                            24.678 METERS 18512     |
 JV0464| JV0465 HAHA RM 2                            19.828 METERS 27558     |
 JV0464| JV5318 MOUNTAIN CHRISTIAN CH SPIRE         APPROX. 5.2 KM 2775933.6 |
 JV0464|---------------------------------------------------------------------|
 JV0464
 JV0464                          SUPERSEDED SURVEY CONTROL
 JV0464
 JV0464  NAD 83(1986)-  39 27 40.84365(N)    076 18 48.42858(W) AD(       ) 2
 JV0464  NAD 27      -  39 27 40.45280(N)    076 18 49.57830(W) AD(       ) 2
 JV0464  NGVD 29              52.85   (m)          173.4    (f) LEVELING    3  
 JV0464  NGVD 29 (11/26/84)   52.845  (m)          173.38   (f) ADJUSTED    2 0
 JV0464
 JV0464.Superseded values are not recommended for survey control.
 JV0464
 JV0464.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0464.See file dsdata.pdf to determine how the superseded data were derived.
 JV0464
 JV0464_MARKER: DS = TRIANGULATION STATION DISK
 JV0464_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0464_STAMPING: HA HA 1958
 JV0464_MARK LOGO: CGS
 JV0464_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0464+STABILITY: SURFACE MOTION
 JV0464
 JV0464  HISTORY     - Date     Condition        Report By
 JV0464  HISTORY     - 1958     MONUMENTED       CGS
 JV0464  HISTORY     - 1960     GOOD             CGS
 JV0464  HISTORY     - 1962     GOOD             CGS
 JV0464  HISTORY     - 1974     GOOD             NGS
 JV0464
 JV0464                          STATION DESCRIPTION
 JV0464
 JV0464'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0464'STATION IS LOCATED ABOUT 3.0 MILES NORTH OF EDGEWOOD, AND ABOUT
 JV0464'4-1/2 MILES EAST OF LITTLE GUNPOWDER RIVER.  IT IS 15 FEET
 JV0464'SOUTH-SOUTHEAST OF A 12 INCH OAK TREE WITH A TRIANGLE BLAZE, 18
 JV0464'FEET NORTH OF A FORKED OAK TREE WITH TRIANGLE BLAZE, 22-1/2 FEET
 JV0464'NORTH-NORTHEAST OF TRACK ROAD, AND 32 FEET NORTH-NORTHEAST OF 18
 JV0464'INCH BEACH TREE.  THE MARK IS A STANDARD TRIANGULATION STATION
 JV0464'MARK DISK SET IN A 10 BY 10 INCH CONCRETE MONUMENT PROJECTS 4
 JV0464'INCHES.  AND THE DISK IS STAMPED HAHA 1958.
 JV0464'
 JV0464'REFERENCE MARK NO. 1 IS 17 FEET NORTH-NORTHWEST OF GRAVEL ROAD, 39
 JV0464'FEET SOUTH-SOUTHEAST OF TRACK ROAD, AND 21 FEET SOUTH OF 12 INCH
 JV0464'PINE TREE.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN A
 JV0464'10 BY 10 INCH CONCRETE MONUMENT PROJECTS 8 INCHES.  AND THE DISK
 JV0464'IS STAMPED HAHA NO 1 1958.
 JV0464'
 JV0464'REFERENCE MARK NO. 2 IS 21 FEET NORTHEAST OF GRAVEL ROAD, 18 FEET
 JV0464'NORTH OF 8 INCH OAK TREE, AND 7-1/2 FEET EAST OF A SMALL HICKORY
 JV0464'TREE.  THE MARK IS A STANDARD REFERENCE MARK DISK SET IN A 10 BY
 JV0464'10 INCH CONCRETE MONUMENT PROJECTS 3 INCHES.  AND THE DISK IS
 JV0464'STAMPED HAHA NO 2 1958.
 JV0464'
 JV0464'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JV0464'HIGHWAY NO. 24 AT THE NORTH OF EDGEWOOD, GO NORTH ON STATE HIGHWAY
 JV0464'NO. 24 FOR 0.7 MILE TO CROSSROADS, CONTINUE NORTH ON STATE HIGHWAY
 JV0464'NO. 24 FOR 1.5 MILE TO SIDE ROAD LEFT.  TURN LEFT AND WEST FOR 0.3
 JV0464'MILE TO FORK, KEEP RIGHT FORK OF DIM TRACK ROAD FOR ABOUT 100
 JV0464'YARDS AND STATION ON RIGHT AS DESCRIBED.
 JV0464'
 JV0464'NO SUITABLE PLACE WAS FOUND TO SET AZIMUTH MARK, AND NO PROMINENT
 JV0464'OBJECTS CAN BE SEEN FROM THE GROUND.
 JV0464'
 JV0464'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV0464
 JV0464                          STATION RECOVERY (1960)
 JV0464
 JV0464'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960
 JV0464'5.8 MI S FROM BEL AIR.
 JV0464'ABOUT 5.55 MILES SOUTH ALONG STATE HIGHWAY 24 FROM THE COURTHOUSE
 JV0464'AT BEL AIR, THENCE ABOUT 0.3 MILE WEST ALONG A DIRT ROAD, ON THE
 JV0464'TOP OF A RIDGE AND IN A WOODS, 52 FEET NORTHEAST OF CENTER LINE
 JV0464'OF ROAD, 114.5 FEET NORTH-NORTHWEST OF R M 1, 65.1 FEET
 JV0464'EAST-SOUTHEAST OF R M 2, 16 FEET SOUTHEAST OF A TRIANGULATION
 JV0464'BLAZED 18-INCH OAK TREE, 32 1/2 FEET NORTHEAST OF A 20-INCH BEACH
 JV0464'TREE, 19 FEET NORTH OF A TRIANGULATION BLAZED 20-INCH FORKED OAK
 JV0464'TREE, AND SET IN TOP OF A CONCRETE POST PROJECTING 3 INCHES.
 JV0464
 JV0464                          STATION RECOVERY (1962)
 JV0464
 JV0464'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (WER)
 JV0464'THE STATION AND REFERENCE MARK NO. 2 WERE RECOVERED IN GOOD
 JV0464'CONDITION AND THE DISTANCE VERIFIED.  REFERENCE MARK NO. 3 WAS
 JV0464'SET TO REPLACE REFERENCE MARK NO. 1 WHICH WAS DESTROYED.  A NEW
 JV0464'DESCRIPTION FOLLOWS--
 JV0464'
 JV0464'THE STATION IS LOCATED ABOUT 3.0 MILES NORTH OF EDGEWOOD, AND
 JV0464'ABOUT 4-1/2 MILES EAST OF LITTLE GUNPOWDER RIVER, ON PROPERTY OF
 JV0464'MR. THOMAS A. MOORE.  IT IS ABOUT 42-FEET WEST OF THE RIGHT OF
 JV0464'WAY OF THE NEW ACCESS ROAD ON THE WEST SIDE OF THE PROPOSED
 JV0464'NORTHEAST EXPRESSWAY, 15-FEET SOUTH-SOUTHEAST OF A 12-INCH OAK
 JV0464'TREE WITH A TRIANGLE BLAZE, 18-FEET NORTH OF A CUT FORKED OAK TREE
 JV0464'WITH TRIANGLE BLAZE, 70-FEET NORTHWEST OF FIRST 15-INCH OAK TREE
 JV0464'WITH A TRIANGLE BLAZE ON THE NORTH SIDE OF THE GRAVEL ROAD WEST OF
 JV0464'THE NEW ACCESS ROAD, 22-1/2 FEET NORTHEAST OF A TRACK ROAD, AND
 JV0464'32-FEET NORTH-NORTHWEST OF AN 18-INCH BEACH TREE.  THE MARK,
 JV0464'STAMPED HAHA 1958, IS A STANDARD DISK SET IN A 10 BY 10 INCH
 JV0464'CONCRETE MONUMENT PROJECTING 4-INCHES.
 JV0464'
 JV0464'REFERENCE MARK NO. 2 IS 21-FEET NORTHEAST OF THE GRAVEL ROAD,
 JV0464'18-FEET NORTH OF AN 8-INCH OAK TREE, AND 7-FEET EAST OF A SMALL
 JV0464'HICKORY TREE.  THE MARK, STAMPED HAHA NO 2 1958, IS A STANDARD
 JV0464'DISK SET IN A 10 BY 10 INCH CONCRETE MONUMENT PROJECTING 3-INCHES.
 JV0464'
 JV0464'REFERENCE MARK NO. 3 IS ABOUT 70-FEET WEST OF THE RIGHT OF WAY OF
 JV0464'THE ACCESS ROAD, 22-FEET SOUTH-SOUTHWEST OF THE GRAVEL ROAD, 9.5
 JV0464'FEET SOUTH-SOUTHWEST OF A 9-INCH PINE TREE WITH A TRIANGLE BLAZE,
 JV0464'41.5 FEET WEST-SOUTHWEST OF THE FIRST 15-INCH OAK TREE ON THE
 JV0464'NORTH SIDE OF THE GRAVEL ROAD WEST OF THE NEW ACCESS ROAD, 56-FEET
 JV0464'WEST OF A TWIN PINE TREE WITH A TRIANGLE BLAZE ON THE SOUTH SIDE
 JV0464'OF THE GRAVEL ROAD, AND 5-FEET NORTH OF A 6-INCH PINE TREE WITH A
 JV0464'TRIANGLE BLAZE.  THE MARK, STAMPED HAHA NO 3 1958, IS A STANDARD
 JV0464'DISK SET IN A 12 BY 12 INCH CONCRETE MONUMENT FLUSH WITH GROUND.
 JV0464'
 JV0464'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JV0464'HIGHWAY NO. 24, GO NORTH ON STATE HIGHWAY NO. 24 FOR 0.7 MILE TO
 JV0464'CROSSROADS, CONTINUE NORTH ON STATE HIGHWAY NO. 24 FOR 1.5 MILE TO
 JV0464'SIDE ROAD LEFT.  TURN LEFT AND WEST FOR 0.3 MILE TO NEW NORTHEAST
 JV0464'EXPRESSWAY.  CROSS EXPRESSWAY AND ACCESS ROAD.  STATION IS JUST
 JV0464'WEST OF THE ACCESS ROAD ON THE RIGHT SIDE OF THE GRAVEL ROAD
 JV0464'LEADING TO FARM OF MR. MOORE, AS DESCRIBED.
 JV0464'
 JV0464'NO SUITABLE PLACE WAS FOUND AT THIS TIME TO SET AZIMUTH MARK, AND
 JV0464'NO PROMINENT OBJECTS COULD BE SEEN FROM THE GROUND.
 JV0464
 JV0464                          STATION RECOVERY (1974)
 JV0464
 JV0464'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV0464'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV0464'CONDITION AS DESCRIBED IN THE 1962 DESCRIPTION.  A NEW WITNESS
 JV0464'POST WAS SET 2.4 FEET NORTHWEST OF THE STATION MARK.
 JV0464'
 JV0464'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 3 MILES NORTH OF
 JV0464'EDGEWOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0463 ***********************************************************************
 JV0463  DESIGNATION -  HAHA RM 1
 JV0463  PID         -  JV0463
 JV0463  STATE/COUNTY-  MD/HARFORD
 JV0463  COUNTRY     -  US
 JV0463  USGS QUAD   -  EDGEWOOD (2016)
 JV0463
 JV0463                         *CURRENT SURVEY CONTROL
 JV0463  ______________________________________________________________________
 JV0463* NAD 83(1986) POSITION- 39 27 40.01   (N) 076 18 47.44   (W)   HD_HELD1
 JV0463* NAVD 88 ORTHO HEIGHT -    51.812 (meters)      169.99  (feet) ADJUSTED
 JV0463  ______________________________________________________________________
 JV0463  GEOID HEIGHT    -        -33.035 (meters)                     GEOID18
 JV0463  DYNAMIC HEIGHT  -         51.785 (meters)      169.90  (feet) COMP
 JV0463  MODELED GRAVITY -    980,107.4   (mgal)                       NAVD 88
 JV0463
 JV0463  VERT ORDER      -  SECOND    CLASS 0
 JV0463
 JV0463.The horizontal coordinates were determined by differentially corrected
 JV0463.hand held GPS observations or other comparable positioning techniques
 JV0463.and have an estimated accuracy of +/- 3 meters.
 JV0463
 JV0463.The orthometric height was determined by differential leveling and
 JV0463.adjusted by the NATIONAL GEODETIC SURVEY
 JV0463.in June 1991.
 JV0463
 JV0463.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0463.GEOID18 height accuracy estimate available here.
 JV0463
 JV0463.Click photographs - Photos may exist for this station.
 JV0463
 JV0463.The dynamic height is computed by dividing the NAVD 88
 JV0463.geopotential number by the normal gravity value computed on the
 JV0463.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0463.degrees latitude (g = 980.6199 gals.).
 JV0463
 JV0463.The modeled gravity was interpolated from observed gravity values.
 JV0463
 JV0463;                    North         East    Units  Estimated Accuracy
 JV0463;SPC MD       -   199,419.9     459,108.4     MT  (+/- 3 meters HH1 GPS) 
 JV0463
 JV0463_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8702968771(NAD 83)
 JV0463
 JV0463                          SUPERSEDED SURVEY CONTROL
 JV0463
 JV0463  NGVD 29 (11/26/84)   52.057  (m)          170.79   (f) ADJUSTED    2 0
 JV0463
 JV0463.Superseded values are not recommended for survey control.
 JV0463
 JV0463.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0463.See file dsdata.pdf to determine how the superseded data were derived.
 JV0463
 JV0463_MARKER: DR = REFERENCE MARK DISK
 JV0463_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0463_STAMPING: HAHA NO 1 1958
 JV0463_MARK LOGO: CGS
 JV0463_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0463+STABILITY: SURFACE MOTION
 JV0463
 JV0463  HISTORY     - Date     Condition        Report By
 JV0463  HISTORY     - 1958     MONUMENTED       CGS
 JV0463  HISTORY     - 1960     GOOD             CGS
 JV0463
 JV0463                          STATION DESCRIPTION
 JV0463
 JV0463'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0463'5.8 MI S FROM BEL AIR.
 JV0463'ABOUT 5.55 MILES SOUTH ALONG STATE HIGHWAY 24 FROM THE COURTHOUSE
 JV0463'AT BEL AIR, THENCE ABOUT 0.3 MILE WEST ALONG A DIRT ROAD, 114.5
 JV0463'FEET SOUTH-SOUTHEAST OF TRIANGULATION-STATION HA HA, DESCRIBED,
 JV0463'17 1/2 FEET NORTHEAST OF THE CENTER LINE OF ROAD, 22 FEET
 JV0463'NORTHWEST OF A 24-INCH FORKED OAK TREE, AND SET IN TOP OF A
 JV0463'CONCRETE POST PROJECTING 5 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0465 ***********************************************************************
 JV0465  DESIGNATION -  HAHA RM 2
 JV0465  PID         -  JV0465
 JV0465  STATE/COUNTY-  MD/HARFORD
 JV0465  COUNTRY     -  US
 JV0465  USGS QUAD   -  EDGEWOOD (2016)
 JV0465
 JV0465                         *CURRENT SURVEY CONTROL
 JV0465  ______________________________________________________________________
 JV0465* NAD 83(1986) POSITION- 39 27 40.92   (N) 076 18 49.25   (W)   HD_HELD1
 JV0465* NAVD 88 ORTHO HEIGHT -    52.737 (meters)      173.02  (feet) ADJUSTED
 JV0465  ______________________________________________________________________
 JV0465  GEOID HEIGHT    -        -33.033 (meters)                     GEOID18
 JV0465  DYNAMIC HEIGHT  -         52.709 (meters)      172.93  (feet) COMP
 JV0465  MODELED GRAVITY -    980,107.4   (mgal)                       NAVD 88
 JV0465
 JV0465  VERT ORDER      -  SECOND    CLASS 0
 JV0465
 JV0465.The horizontal coordinates were determined by differentially corrected
 JV0465.hand held GPS observations or other comparable positioning techniques
 JV0465.and have an estimated accuracy of +/- 3 meters.
 JV0465
 JV0465.The orthometric height was determined by differential leveling and
 JV0465.adjusted by the NATIONAL GEODETIC SURVEY
 JV0465.in June 1991.
 JV0465
 JV0465.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0465.GEOID18 height accuracy estimate available here.
 JV0465
 JV0465.Click photographs - Photos may exist for this station.
 JV0465
 JV0465.The dynamic height is computed by dividing the NAVD 88
 JV0465.geopotential number by the normal gravity value computed on the
 JV0465.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0465.degrees latitude (g = 980.6199 gals.).
 JV0465
 JV0465.The modeled gravity was interpolated from observed gravity values.
 JV0465
 JV0465;                    North         East    Units  Estimated Accuracy
 JV0465;SPC MD       -   199,447.7     459,064.9     MT  (+/- 3 meters HH1 GPS) 
 JV0465
 JV0465_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8698668800(NAD 83)
 JV0465
 JV0465                          SUPERSEDED SURVEY CONTROL
 JV0465
 JV0465  NGVD 29 (11/26/84)   52.983  (m)          173.83   (f) ADJUSTED    2 0
 JV0465
 JV0465.Superseded values are not recommended for survey control.
 JV0465
 JV0465.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0465.See file dsdata.pdf to determine how the superseded data were derived.
 JV0465
 JV0465_MARKER: DR = REFERENCE MARK DISK
 JV0465_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0465_STAMPING: HAHA NO 2 1958
 JV0465_MARK LOGO: CGS
 JV0465_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0465+STABILITY: SURFACE MOTION
 JV0465
 JV0465  HISTORY     - Date     Condition        Report By
 JV0465  HISTORY     - 1958     MONUMENTED       CGS
 JV0465  HISTORY     - 1960     GOOD             CGS
 JV0465
 JV0465                          STATION DESCRIPTION
 JV0465
 JV0465'DESCRIBED BY COAST AND GEODETIC SURVEY 1960
 JV0465'5.8 MI S FROM BEL AIR.
 JV0465'ABOUT 5.55 MILES SOUTH ALONG STATE HIGHWAY 24 FROM THE COURTHOUSE
 JV0465'AT BEL AIR, THENCE ABOUT 0.3 MILE WEST ALONG A DIRT ROAD, 65.1
 JV0465'FEET WEST-NORTHWEST OF TRIANGULATION STATION HA HA, DESCRIBED,
 JV0465'20 FEET NORTH-NORTHEAST OF THE CENTER LINE OF ROAD, 15 FEET
 JV0465'SOUTH-SOUTHWEST OF THE SOUTHERNMOST HOLE OF A GROUP OF HOLES
 JV0465'IN THE GROUND, 15 FEET SOUTHWEST OF A LONE 6-INCH PINE TREE, AND
 JV0465'SET IN TOP OF A CONCRETE POST PROJECTING 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5049 ***********************************************************************
 JV5049  DESIGNATION -  HAIL POINT 2
 JV5049  PID         -  JV5049
 JV5049  STATE/COUNTY-  MD/KENT
 JV5049  COUNTRY     -  US
 JV5049  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5049
 JV5049                         *CURRENT SURVEY CONTROL
 JV5049  ______________________________________________________________________
 JV5049* NAD 83(1991) POSITION- 39 00 41.77073(N) 076 11 43.11274(W)   ADJUSTED
 JV5049* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5049  ______________________________________________________________________
 JV5049  GEOID HEIGHT    -        -33.689 (meters)                     GEOID18
 JV5049  LAPLACE CORR    -         -3.37  (seconds)                    DEFLEC18
 JV5049  HORZ ORDER      -  THIRD
 JV5049
 JV5049.The horizontal coordinates were established by classical geodetic methods
 JV5049.and adjusted by the National Geodetic Survey in January 1992.
 JV5049
 JV5049.The orthometric height was scaled from a topographic map.
 JV5049
 JV5049.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5049.GEOID18 height accuracy estimate available here.
 JV5049
 JV5049.Click photographs - Photos may exist for this station.
 JV5049
 JV5049.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5049
 JV5049. The following values were computed from the NAD 83(1991) position.
 JV5049
 JV5049;                    North         East     Units Scale Factor Converg.
 JV5049;SPC MD       -   149,601.421   469,691.890   MT  0.99995265   +0 30 18.2
 JV5049;SPC MD       -   490,817.33  1,540,980.81   sFT  0.99995265   +0 30 18.2
 JV5049;UTM  18      - 4,318,743.752   396,511.421   MT  0.99973187   -0 45 09.0
 JV5049
 JV5049!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5049!SPC MD       -   1.00000532  x   0.99995265  =   0.99995797
 JV5049!UTM  18      -   1.00000532  x   0.99973187  =   0.99973719
 JV5049
 JV5049:                Primary Azimuth Mark                     Grid Az
 JV5049:SPC MD       -  BAY BUSH POINT                           347 01 21.3
 JV5049:UTM  18      -  BAY BUSH POINT                           348 16 48.5
 JV5049
 JV5049_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9651118743(NAD 83)
 JV5049
 JV5049|---------------------------------------------------------------------|
 JV5049| PID    Reference Object                     Distance      Geod. Az  |
 JV5049|                                                           dddmmss.s |
 JV5049| JV5053 WILLIAMS WINDMILL                   APPROX. 3.2 KM 0531817.9 |
 JV5049| HV5816 CLARKES HOUSE NORTH CHIMNEY         APPROX. 4.6 KM 1942850.0 |
 JV5049| HV5795 JACKSON CREEK WHARF HOUSE VENT      APPROX. 5.1 KM 2073634.5 |
 JV5049| JV5072 BAY BUSH POINT                      APPROX. 5.2 KM 3473139.5 |
 JV5049|---------------------------------------------------------------------|
 JV5049
 JV5049                          SUPERSEDED SURVEY CONTROL
 JV5049
 JV5049  NAD 83(1986)-  39 00 41.76563(N)    076 11 43.12500(W) AD(       ) 3
 JV5049  NAD 27      -  39 00 41.36000(N)    076 11 44.26600(W) AD(       ) 3
 JV5049  USSD        -  39 00 41.72400(N)    076 11 44.10400(W) AD(       ) 3
 JV5049
 JV5049.Superseded values are not recommended for survey control.
 JV5049
 JV5049.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5049.See file dsdata.pdf to determine how the superseded data were derived.
 JV5049
 JV5049_MARKER: N = NAIL
 JV5049_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV5049_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5049
 JV5049  HISTORY     - Date     Condition        Report By
 JV5049  HISTORY     - 1896     MONUMENTED       CGS
 JV5049  HISTORY     - 1938     MARK NOT FOUND   CGS
 JV5049
 JV5049                          STATION DESCRIPTION
 JV5049
 JV5049'DESCRIBED BY COAST AND GEODETIC SURVEY 1896 (JAF)
 JV5049'STATION IS ON THE SOUTHEASTERN EXTREMITY OF EASTERN NECK ISLAND,
 JV5049'ON THE TIP END OF HAIL POINT, N SIDE OF CHESTER RIVER, OPPOSITE
 JV5049'COURCY CREEK.
 JV5049'
 JV5049'THE STATION IS MARKED BY A NAIL IN A CEMENT-FILLED TILE PIPE.  THE
 JV5049'TOP OF THE PIPE, 6 INCHES BELOW SURFACE, IS SURROUNDED BY A
 JV5049'BLOCK OF CEMENT BEARING THE LEGEND U.S.C.S. 1896.  THE UNDERGROUND
 JV5049'MARK IS A GLASS BOTTLE BURIED THREE FEET BELOW THE SURFACE OF
 JV5049'THE GROUND WITH THE NECK UP AND SURROUNDED WITH CEMENT.
 JV5049'
 JV5049'A TRIANGLE CUT IN A SMALL PERSIMMON TREE IS 19.6 FEET N 11 DEG
 JV5049'W (MAGNETIC) FROM THE STATION.  MAGNETIC BEARINGS FROM THE
 JV5049'STATION TO OTHER OBJECTS ARE AS FOLLOWS--BOGLES WHARF HOUSE,
 JV5049'EASTERN NECK ISLAND, N 9 DEG 30 MIN W.  DEPOT BUILDING NEAR
 JV5049'RAILROAD WHARF, QUEENSTOWN, S 54 DEG 30 MIN E.  LARGE PINE TREE
 JV5049'NEAR GREENS CABIN ON CEDAR POINT, S 88 DEG 15 MIN W.
 JV5049
 JV5049                          STATION RECOVERY (1938)
 JV5049
 JV5049'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5049'STATION LOST DUE TO EROSION.  ENTIRE POINT HAS BEEN WASHED BACK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1893 ***********************************************************************
 HU1893  DESIGNATION -  HAINES
 HU1893  PID         -  HU1893
 HU1893  STATE/COUNTY-  MD/SOMERSET
 HU1893  COUNTRY     -  US
 HU1893  USGS QUAD   -  DEAL ISLAND (2016)
 HU1893
 HU1893                         *CURRENT SURVEY CONTROL
 HU1893  ______________________________________________________________________
 HU1893* NAD 83(1993) POSITION- 38 10 34.09892(N) 075 57 09.55328(W)   ADJUSTED
 HU1893* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1893  ______________________________________________________________________
 HU1893  GEOID HEIGHT    -        -35.766 (meters)                     GEOID18
 HU1893  LAPLACE CORR    -         -2.51  (seconds)                    DEFLEC18
 HU1893  HORZ ORDER      -  THIRD
 HU1893
 HU1893.The horizontal coordinates were established by classical geodetic methods
 HU1893.and adjusted by the National Geodetic Survey in November 1994.
 HU1893
 HU1893.The orthometric height was scaled from a topographic map.
 HU1893
 HU1893.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1893.GEOID18 height accuracy estimate available here.
 HU1893
 HU1893.Click photographs - Photos may exist for this station.
 HU1893
 HU1893.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1893
 HU1893. The following values were computed from the NAD 83(1993) position.
 HU1893
 HU1893;                    North         East     Units Scale Factor Converg.
 HU1893;SPC MD       -    57,080.402   491,770.719   MT  1.00002386   +0 39 26.5
 HU1893;SPC MD       -   187,271.29  1,613,417.77   sFT  1.00002386   +0 39 26.5
 HU1893;UTM  18      - 4,225,787.031   416,559.084   MT  0.99968575   -0 35 19.9
 HU1893
 HU1893!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1893!SPC MD       -   1.00000565  x   1.00002386  =   1.00002951
 HU1893!UTM  18      -   1.00000565  x   0.99968575  =   0.99969140
 HU1893
 HU1893:                Primary Azimuth Mark                     Grid Az
 HU1893:SPC MD       -  SHARKFIN SHOAL LIGHTHOUSE 1898           313 22 41.4
 HU1893:UTM  18      -  SHARKFIN SHOAL LIGHTHOUSE 1898           314 37 27.8
 HU1893
 HU1893_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1655925787(NAD 83)
 HU1893
 HU1893|---------------------------------------------------------------------|
 HU1893| PID    Reference Object                     Distance      Geod. Az  |
 HU1893|                                                           dddmmss.s |
 HU1893| DC7351 HAINES RM                             9.640 METERS 07743     |
 HU1893| HV6463 PEARL                               APPROX. 6.1 KM 2723339.0 |
 HU1893| HV6449 BISHOP 2 1898                       APPROX.10.0 KM 3015443.4 |
 HU1893| HU1903 SHARKFIN SHOAL LIGHTHOUSE 1898      APPROX. 4.2 KM 3140207.9 |
 HU1893|---------------------------------------------------------------------|
 HU1893
 HU1893                          SUPERSEDED SURVEY CONTROL
 HU1893
 HU1893  NAD 83(1991)-  38 10 34.09847(N)    075 57 09.55306(W) AD(       ) 3
 HU1893  NAD 83(1986)-  38 10 34.09862(N)    075 57 09.57260(W) AD(       ) 3
 HU1893  NAD 27      -  38 10 33.65800(N)    075 57 10.80700(W) AD(       ) 3
 HU1893  USSD        -  38 10 34.03900(N)    075 57 10.55300(W) AD(       ) 3
 HU1893
 HU1893.Superseded values are not recommended for survey control.
 HU1893
 HU1893.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1893.See file dsdata.pdf to determine how the superseded data were derived.
 HU1893
 HU1893
 HU1893  HISTORY     - Date     Condition        Report By
 HU1893  HISTORY     - 1901     MONUMENTED       CGS
 HU1893  HISTORY     - 1907     GOOD             CGS
 HU1893  HISTORY     - 1933     MARK NOT FOUND   LOCENG
 HU1893
 HU1893                          STATION DESCRIPTION
 HU1893
 HU1893'DESCRIBED BY COAST AND GEODETIC SURVEY 1907
 HU1893'STATION IS ON EASTERN SIDE OF TANGIER SOUND, ON HAINES POINT,
 HU1893'ABOUT 5/8 MILE N OF DEAL ISLAND WHARF.  IT IS ON A SANDY MOUND,
 HU1893'ON A SAND AND GRASS POINT, ABOUT 20 FEET BACK FROM AND 5 FEET
 HU1893'ABOVE HIGH-WATER MARK.  LOCUST AND WATER BUSHES STAND ABOUT 20
 HU1893'YARDS TO THE N, AND THE LEFT EDGE OF THIS CLUMP IS ABOUT ON LINE
 HU1893'WITH SHARKFIN SHOAL LIGHT.  A BARBED-WIRED FENCE RUNS 3 YARDS E
 HU1893'OF STATION.  STATION MARKED BY NAIL IN PINE STUB INSIDE A
 HU1893'4-INCH TILE PIPE ORIGINALLY 2 FEET LONG, SET IN CEMENT.  IN
 HU1893'1907 THE TOP OF THE TILE WAS FOUND BROKEN OFF BELOW THE
 HU1893'SURFACE OF THE GROUND.  REFERENCE MARK IS MARKED BY HOLE IN
 HU1893'CENTER OF TOP OF MARYLAND SHELL FISH SURVEY STANDARD
 HU1893'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH
 HU1893'TOP PROJECTING ABOUT 4 INCHES.  LETTERS M.S.F.C. AND
 HU1893'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 9.64 METERS
 HU1893'(31.63 FEET) FROM STATION N 77 DEG 43 MIN E.  DISTANCES
 HU1893'AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 HU1893'FOLLOWS--CHIMNEY OF 2 1/2-STORY WHITE HOUSE TRIMMED WITH
 HU1893'RED, 1/2 MILE, N 29 DEG 06 MIN E.  CHIMNEY OF UNPAINTED HOUSE, 350
 HU1893'YARDS, N 39 DEG 51 MIN E.  CHIMNEY ON END OF RED COTTAGE TRIMMED
 HU1893'WITH WHITE, 3/4 MILE, N 53 DEG 02 MIN E.  N PINE TREE 2.14 METERS
 HU1893'(7.02 FEET), S 77 DEG 21 MIN E.  LARGE SQUARE CHIMNEY ON RED
 HU1893'HOUSE, 400 YARDS, S 73 DEG 09 MIN E.  RIGHT ONE OF 5 LARGE PINES,
 HU1893'300 YARDS, S 41 DEG 18 MIN E.  HALFWAY BETWEEN CHIMNEYS ON STORE ON
 HU1893'DEAL ISLAND, 3/4 MILE, S 12 DEG 50 MIN E.  DEAL ISLAND CHURCH, 1-1/2
 HU1893'MILES, S 08 DEG 58 MIN E.  BLACK GUM TREE, 6.70 METERS (21.98 FEET),
 HU1893'S 02 DEG 09 MIN E.  RIGHT END OF DEAL ISLAND WHARF, 1/2 MILE,
 HU1893'N 88 DEG 12 MIN E.
 HU1893
 HU1893                          STATION RECOVERY (1933)
 HU1893
 HU1893'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1933
 HU1893'RECOVERED BY MDCD.
 HU1893'
 HU1893'REPORTED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0919 ***********************************************************************
 JV0919  DESIGNATION -  HALE
 JV0919  PID         -  JV0919
 JV0919  STATE/COUNTY-  MD/BALTIMORE
 JV0919  COUNTRY     -  US
 JV0919  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0919
 JV0919                         *CURRENT SURVEY CONTROL
 JV0919  ______________________________________________________________________
 JV0919* NAD 83(1991) POSITION- 39 15 01.86964(N) 076 40 50.63305(W)   ADJUSTED
 JV0919* NAVD 88 ORTHO HEIGHT -    43.098 (meters)      141.40  (feet) ADJUSTED
 JV0919  ______________________________________________________________________
 JV0919  GEOID HEIGHT    -        -32.582 (meters)                     GEOID18
 JV0919  LAPLACE CORR    -         -6.27  (seconds)                    DEFLEC18
 JV0919  DYNAMIC HEIGHT  -         43.075 (meters)      141.32  (feet) COMP
 JV0919  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV0919
 JV0919  HORZ ORDER      -  THIRD
 JV0919  VERT ORDER      -  SECOND    CLASS 0
 JV0919
 JV0919.The horizontal coordinates were established by classical geodetic methods
 JV0919.and adjusted by the National Geodetic Survey in January 1992.
 JV0919
 JV0919.The orthometric height was determined by differential leveling and
 JV0919.adjusted by the NATIONAL GEODETIC SURVEY
 JV0919.in June 1991.
 JV0919
 JV0919.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0919.GEOID18 height accuracy estimate available here.
 JV0919
 JV0919.Click photographs - Photos may exist for this station.
 JV0919
 JV0919.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0919
 JV0919.The dynamic height is computed by dividing the NAVD 88
 JV0919.geopotential number by the normal gravity value computed on the
 JV0919.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0919.degrees latitude (g = 980.6199 gals.).
 JV0919
 JV0919.The modeled gravity was interpolated from observed gravity values.
 JV0919
 JV0919. The following values were computed from the NAD 83(1991) position.
 JV0919
 JV0919;                    North         East     Units Scale Factor Converg.
 JV0919;SPC MD       -   175,865.414   427,558.447   MT  0.99997119   +0 12 01.4
 JV0919;SPC MD       -   576,985.11  1,402,748.00   sFT  0.99997119   +0 12 01.4
 JV0919;UTM  18      - 4,345,923.661   354,972.935   MT  0.99985898   -1 03 49.0
 JV0919
 JV0919!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0919!SPC MD       -   0.99999835  x   0.99997119  =   0.99996954
 JV0919!UTM  18      -   0.99999835  x   0.99985898  =   0.99985733
 JV0919
 JV0919:                Primary Azimuth Mark                     Grid Az
 JV0919:SPC MD       -  BALTIMORE RADIO STA WITH MAST            307 11 15.7
 JV0919:UTM  18      -  BALTIMORE RADIO STA WITH MAST            308 27 06.1
 JV0919
 JV0919_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5497245923(NAD 83)
 JV0919
 JV0919|---------------------------------------------------------------------|
 JV0919| PID    Reference Object                     Distance      Geod. Az  |
 JV0919|                                                           dddmmss.s |
 JV0919| JV0917 HALE RM 1                            23.957 METERS 09835     |
 JV0919| JV0921 HALE RM 2                            27.478 METERS 27018     |
 JV0919| JV0920 HALE 2                              253.382 METERS 27229     |
 JV0919| JV5625 BALTIMORE RADIO STA WITH MAST       APPROX. 6.4 KM 3072317.1 |
 JV0919|---------------------------------------------------------------------|
 JV0919
 JV0919                          SUPERSEDED SURVEY CONTROL
 JV0919
 JV0919  NAD 83(1986)-  39 15 01.86661(N)    076 40 50.64195(W) AD(       ) 3
 JV0919  NAD 27      -  39 15 01.48180(N)    076 40 51.75130(W) AD(       ) 3
 JV0919  NGVD 29              43.31   (m)          142.1    (f) LEVELING    3  
 JV0919  NGVD 29 (11/26/84)   43.311  (m)          142.10   (f) ADJUSTED    2 0
 JV0919
 JV0919.Superseded values are not recommended for survey control.
 JV0919
 JV0919.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0919.See file dsdata.pdf to determine how the superseded data were derived.
 JV0919
 JV0919_MARKER: DS = TRIANGULATION STATION DISK
 JV0919_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0919_STAMPING: HALE 1957
 JV0919_MARK LOGO: CGS
 JV0919_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0919+STABILITY: SURFACE MOTION
 JV0919
 JV0919  HISTORY     - Date     Condition        Report By
 JV0919  HISTORY     - 1957     MONUMENTED       CGS
 JV0919  HISTORY     - 1957     GOOD             CGS
 JV0919  HISTORY     - 1968     SEE DESCRIPTION  MDDT
 JV0919  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 JV0919
 JV0919                          STATION DESCRIPTION
 JV0919
 JV0919'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV0919'STATION IS LOCATED ABOUT 1 MILE NORTH OF HALETHORP, ABOUT 1 MILE
 JV0919'NORTHWEST OF LANDSDOWNE AND 3/4 MILE EAST OF ARBUTUS IN AN ISLAND
 JV0919'FORMED BY TWO APPROACHES TO THE BALTIMORE CIRCUMFERENTIAL
 JV0919'HIGHWAY.  STATION IS 30 FEET SOUTH OF EDGE OF ROAD FILL, 22 FEET
 JV0919'NORTH OF EDGE OF ROAD FILL AND 4 FEET NORTHEAST OF WITNESS
 JV0919'POST.  THE MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED
 JV0919'HALE 1957.
 JV0919'
 JV0919'REFERENCE MARK NO. 1 IS 28 FEET NORTH OF EDGE OF ROAD FILL.  THE
 JV0919'MARK PROJECTS ABOUT 4 INCHES AND THE DISK IS STAMPED HALE NO 1 1957.
 JV0919'
 JV0919'REFERENCE MARK NO. 2 IS 20 FEET SOUTH OF EDGE OF ROAD FILL AND
 JV0919'12 FEET NORTH OF EDGE OF ROAD FILL.  THE MARK PROJECTS ABOUT 2
 JV0919'INCHES AND THE DISK IS STAMPED HALE NO 2 1957.
 JV0919'
 JV0919'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 1 AND STATE
 JV0919'HIGHWAY 166 IN RELAY GO NORTHERLY ON U.S. HIGHWAY 1 FOR 0.5 MILE
 JV0919'TO JUNCTION OF U.S. HIGHWAY 1 AND ALTERNATE 1.  KEEP LEFT FORK ON
 JV0919'U.S. ALTERNATE 1 FOR 1.7 MILES TO THE JUNCTION OF SULPHUR SPRINGS
 JV0919'ROAD.  TURN LEFT ON SULPHUR SPRINGS ROAD AND GO WEST FOR 0.6
 JV0919'MILE TO A NEW GRADE ON RIGHT.  TURN SHARP RIGHT AND GO 0.2 MILE
 JV0919'TO STATION ON THE LEFT BETWEEN THE TWO ROAD BEDS AS DESCRIBED.
 JV0919'
 JV0919'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV0919
 JV0919                          STATION RECOVERY (1957)
 JV0919
 JV0919'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957
 JV0919'1 MI NE FROM HALETHORPE.
 JV0919'TO REACH FROM INTERSECTION OF RIDGE AVENUE AND FAIRVIEW AVENUE
 JV0919'IN HALETHORPE, GO EAST ON RIDGE AVENUE FOR 0.3 MILE TO JUNCTION
 JV0919'OF U.S. HIGHWAY NO. 1.  GO NORTH EAST ON U.S. HIGHWAY NO. 1 FOR
 JV0919'0.6 MILE TO SULPHUR SPRINGS ROAD.  TURN LEFT AND GO 0.7 MILE ON
 JV0919'SULPHUR SPRINGS ROAD TO GRAY HOUSE ON LEFT NO. 1623.  TURN
 JV0919'SHARP RIGHT ON NEW ROAD AND GO NORTHEAST FOR 0.15 MILE TO
 JV0919'STATION ON LEFT ABOUT 3 FEET SOUTHWEST OF A WITNESS POST.
 JV0919
 JV0919                          STATION RECOVERY (1968)
 JV0919
 JV0919'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1968
 JV0919'THE LARGE AREA INVOLVED IN THE CONSTRUCTION OF THE INTERCHANGE
 JV0919'FOR INTERSTATE ROUTES 95 AND 695 NECESSITATED MOVING THIS
 JV0919'STATION MORE THAN 800 FEET FROM ITS ORIGINAL LOCATION.  A NEW
 JV0919'STATION HALE 2 1968 WAS ESTABLISHED BY TRIANGULATION AND
 JV0919'TELLUROMETER TRAVERSE.  PRECISE LEVELS WERE RUN TO THE NEW
 JV0919'MARKS.  THE ORIGINAL DISKS WILL BE FORWARDED AT A LATER DATE.
 JV0919
 JV0919                          STATION RECOVERY (2003)
 JV0919
 JV0919'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0919'THE STATION AND REFERENCE MARKS 1 AND 2 WERE NOT FOUND.  THE
 JV0919'DESCRIPTION IS NO LONGER ADEQUATE FOR THE HOMES HAVE BEEN REPLACED BY
 JV0919'HIGHWAY CONSTRUCTION AND A BUSINESS PARK WITH NEW BUILDINGS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0920 ***********************************************************************
 JV0920  DESIGNATION -  HALE 2
 JV0920  PID         -  JV0920
 JV0920  STATE/COUNTY-  MD/BALTIMORE
 JV0920  COUNTRY     -  US
 JV0920  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0920
 JV0920                         *CURRENT SURVEY CONTROL
 JV0920  ______________________________________________________________________
 JV0920* NAD 83(1991) POSITION- 39 15 02.22496(N) 076 41 01.19052(W)   NO CHECK
 JV0920* NAVD 88 ORTHO HEIGHT -    39.76  (meters)      130.4   (feet) RESET
 JV0920  ______________________________________________________________________
 JV0920  GEOID HEIGHT    -        -32.572 (meters)                     GEOID18
 JV0920  LAPLACE CORR    -         -6.31  (seconds)                    DEFLEC18
 JV0920  HORZ ORDER      -  THIRD
 JV0920  VERT ORDER      -  THIRD
 JV0920
 JV0920.The horizontal coordinates were established by classical geodetic methods
 JV0920.and adjusted by the National Geodetic Survey in January 1992.
 JV0920
 JV0920.No horizontal observational check was made to the station.
 JV0920
 JV0920.The orthometric height was computed from unverified reset data.
 JV0920
 JV0920.No vertical observational check was made to the station.
 JV0920
 JV0920.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0920.GEOID18 height accuracy estimate available here.
 JV0920
 JV0920.Click photographs - Photos may exist for this station.
 JV0920
 JV0920.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0920
 JV0920. The following values were computed from the NAD 83(1991) position.
 JV0920
 JV0920;                    North         East     Units Scale Factor Converg.
 JV0920;SPC MD       -   175,875.490   427,305.273   MT  0.99997120   +0 11 54.8
 JV0920;SPC MD       -   577,018.17  1,401,917.38   sFT  0.99997120   +0 11 54.8
 JV0920;UTM  18      - 4,345,939.317   354,720.074   MT  0.99985988   -1 03 55.7
 JV0920
 JV0920!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0920!SPC MD       -   0.99999887  x   0.99997120  =   0.99997007
 JV0920!UTM  18      -   0.99999887  x   0.99985988  =   0.99985875
 JV0920
 JV0920_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5472045939(NAD 83)
 JV0920
 JV0920|---------------------------------------------------------------------|
 JV0920| PID    Reference Object                     Distance      Geod. Az  |
 JV0920|                                                           dddmmss.s |
 JV0920| JV0922 HALE 2 RM 4                          27.072 METERS 00159     |
 JV0920| JV0919 HALE                                253.382 METERS 09229     |
 JV0920| JV0918 HALE 2 RM 3                          33.857 METERS 24001     |
 JV0920|---------------------------------------------------------------------|
 JV0920
 JV0920                          SUPERSEDED SURVEY CONTROL
 JV0920
 JV0920  NAD 83(1986)-  39 15 02.22194(N)    076 41 01.19942(W) AD(       ) 3
 JV0920  NAD 27      -  39 15 01.83721(N)    076 41 02.30834(W) AD(       ) 3
 JV0920  NGVD 29 (??/??/??)   39.97   (m)          131.1    (f) RESET       3  
 JV0920  NGVD 29              39.97   (m)          131.1    (f) LEVELING    3  
 JV0920
 JV0920.Superseded values are not recommended for survey control.
 JV0920
 JV0920.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0920.See file dsdata.pdf to determine how the superseded data were derived.
 JV0920
 JV0920_MARKER: DS = TRIANGULATION STATION DISK
 JV0920_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0920_STAMPING: HALE 2 1968
 JV0920_MARK LOGO: CGS
 JV0920_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0920+STABILITY: SURFACE MOTION
 JV0920
 JV0920  HISTORY     - Date     Condition        Report By
 JV0920  HISTORY     - 1968     MONUMENTED       MDDT
 JV0920  HISTORY     - 1968     GOOD             MDSRC
 JV0920  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 JV0920
 JV0920                          STATION DESCRIPTION
 JV0920
 JV0920'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1968
 JV0920'THE STATION IS LOCATED IN HALETHORPE, AT THE INTERCHANGE OF
 JV0920'INTERSTATE ROUTES 95 AND 695 (BALTIMORE BELTWAY), 75.5 FEET EAST
 JV0920'OF A LONE 8-INCH CHERRY TREE, 30.0 FEET WEST OF THE TOP OF BANK
 JV0920'ALONG INTERSTATE ROUTE 695 SOUTHBOUND LANE RAMP TO THE WESTBOUND
 JV0920'LANE OF INTERSTATE 95, 43.0 FEET NORTH OF A 14-INCH TWIN CHERRY
 JV0920'TREE, AND 2.0 FEET WEST OF A METAL WITNESS POST.  A STANDARD
 JV0920'DISK SET FLUSH WITH THE GROUND IN A CONCRETE POST.  IT IS
 JV0920'STAMPED HALE 2 1968.
 JV0920'
 JV0920'REFERENCE MARK NO. 3 IS 20.0 FEET NORTH OF THE TOP OF A BANK,
 JV0920'16.0 FEET EAST OF A 12-INCH TREE (CHERRY), 49.7 FEET SOUTHWEST OF
 JV0920'A LONE 8-INCH CHERRY TREE, 117.5 FEET NORTH OF G AND E POLE 9525
 JV0920'AND 133.0 FEET NORTH OF SULPHER SPRING ROAD.  A STANDARD DISK
 JV0920'STAMPED HALE 2 NO 3 1968 AND SET IN THE TOP OF A CONCRETE POST
 JV0920'FLUSH WITH THE GROUND.
 JV0920'
 JV0920'REFERENCE MARK NO. 4 IS 124.5 FEET NORTHEAST OF A LONE 8-INCH
 JV0920'CHERRY TREE, 73.0 FEET SOUTH OF THE WOODS EDGE, AND 24.3 FEET
 JV0920'WEST OF THE TOP OF BANK OF INTERSTATE ROUTE 695 SOUTHBOUND LANE
 JV0920'EXIT RAMP TO INTERSTATE 95 WESTBOUND LANE.  A STANDARD DISK
 JV0920'STAMPED HALE 2 NO 4 1968 AND SET IN THE TOP OF A CONCRETE POST
 JV0920'FLUSH WITH THE SURFACE OF THE GROUND.
 JV0920'
 JV0920'TO REACH THE STATION FROM THE HALETHORPE POST OFFICE (WAELCHI
 JV0920'AVENUE AND SULPHER SPRING ROAD) PROCEED EAST ALONG SULPHER SPRING
 JV0920'ROAD FOR 0.3 MILE TO 1619 SULPHER SPRING ROAD AND THE STATION AS
 JV0920'DESCRIBED.
 JV0920
 JV0920                          STATION RECOVERY (1968)
 JV0920
 JV0920'RECOVERY NOTE BY MD STATE ROADS COMM 1968
 JV0920'1 MI NE FROM HALETHORPE.
 JV0920'TO REACH FROM THE POST OFFICE IN HALETHORPE, MARYLAND (WAELCHLI
 JV0920'AVENUE AND SULPHUR SPRING ROAD) PROCEED EAST ALONG SULPHUR SPRING
 JV0920'ROAD FOR 0.3 MILE TO HOUSE NO. 1619 AND MARK NEAR THE INTERCHANGE
 JV0920'AREA OF INTERSTATE ROUTES 95 AND 695, 30.0 FEET WEST OF TOP OF
 JV0920'BANK ALONG I-695 SOUTHBOUND LANE RAMP TO WESTBOUND LANE OF I-95,
 JV0920'43.0 FEET NORTH OF A 14-INCH TWIN CHERRY TREE, 75.5 FEET EAST OF
 JV0920'A LONE 8-INCH CHERRY TREE AND 2.0 FEET WEST OF A METAL WITNESS
 JV0920'POST.
 JV0920
 JV0920                          STATION RECOVERY (2003)
 JV0920
 JV0920'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0920'THE STATION AND REFERENCE MARKS 3 AND 4 WERE NOT FOUND.  THE
 JV0920'DESCRIPTION IS NO LONGER ADEQUATE FOR THE HOMES HAVE BEEN REPLACED AN
 JV0920'BUSINESS PARK WITH NEW BUILDINGS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0918 ***********************************************************************
 JV0918  DESIGNATION -  HALE 2 RM 3
 JV0918  PID         -  JV0918
 JV0918  STATE/COUNTY-  MD/BALTIMORE
 JV0918  COUNTRY     -  US
 JV0918  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0918
 JV0918                         *CURRENT SURVEY CONTROL
 JV0918  ______________________________________________________________________
 JV0918* NAD 83(1986) POSITION- 39 15 01.68   (N) 076 41 02.42   (W)   HD_HELD1
 JV0918* NAVD 88 ORTHO HEIGHT -    38.75  (meters)      127.1   (feet) RESET
 JV0918  ______________________________________________________________________
 JV0918  GEOID HEIGHT    -        -32.571 (meters)                     GEOID18
 JV0918  VERT ORDER      -  THIRD
 JV0918
 JV0918.The horizontal coordinates were determined by differentially corrected
 JV0918.hand held GPS observations or other comparable positioning techniques
 JV0918.and have an estimated accuracy of +/- 3 meters.
 JV0918
 JV0918.The orthometric height was computed from unverified reset data.
 JV0918
 JV0918.No vertical observational check was made to the station.
 JV0918
 JV0918.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0918.GEOID18 height accuracy estimate available here.
 JV0918
 JV0918.Click photographs - Photos may exist for this station.
 JV0918
 JV0918;                    North         East    Units  Estimated Accuracy
 JV0918;SPC MD       -   175,858.6     427,275.9     MT  (+/- 3 meters HH1 GPS) 
 JV0918
 JV0918_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5469045923(NAD 83)
 JV0918
 JV0918                          SUPERSEDED SURVEY CONTROL
 JV0918
 JV0918  NGVD 29 (??/??/??)   38.96   (m)          127.8    (f) RESET       3  
 JV0918
 JV0918.Superseded values are not recommended for survey control.
 JV0918
 JV0918.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0918.See file dsdata.pdf to determine how the superseded data were derived.
 JV0918
 JV0918_MARKER: DR = REFERENCE MARK DISK
 JV0918_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0918_STAMPING: HALE 2 NO 3 1968
 JV0918_MARK LOGO: CGS
 JV0918_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0918+STABILITY: SURFACE MOTION
 JV0918
 JV0918  HISTORY     - Date     Condition        Report By
 JV0918  HISTORY     - 1968     MONUMENTED       CGS
 JV0918  HISTORY     - 1968     GOOD             MDSRC
 JV0918  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 JV0918
 JV0918                          STATION DESCRIPTION
 JV0918
 JV0918'DESCRIBED BY MD STATE ROADS COMM 1968
 JV0918'1 MI NE FROM HALETHORPE.
 JV0918'TO REACH FROM THE POST OFFICE IN HALETHORPE, MARYLAND (WAELCHLI
 JV0918'AVENUE) AND SULPHUR SPRING ROAD) PROCEED EAST ALONG SULPHUR
 JV0918'SPRING ROAD FOR 0.3 MILE TO HOUSE NO. 1619 AND MARK NEAR THE
 JV0918'INTERCHANGE AREA OF INTERSTATE ROUTES 95 AND 695, 20.0 FEET
 JV0918'NORTH OF TOP OF BANK, 16.0 FEET EAST OF A 12-INCH PEAR TREE,
 JV0918'49.7 FEET SW OF A LONE 8-INCH CHERRY TREE, 117.5 FEET N OF
 JV0918'G AND E POLE 9525, AND 133.0 FEET NORTH OF THE CENTERLINE OF
 JV0918'SULPHUR SPRING ROAD.  A STANDARD REFERENCE MARK DISK SET IN A
 JV0918'CONCRETE POST FLUSH TO THE GROUND AND STAMPED HALE 2, NO. 3, 1968.
 JV0918
 JV0918                          STATION RECOVERY (2003)
 JV0918
 JV0918'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0918'THE STATION AND REFERENCE MARKS 3 AND 4 WERE NOT FOUND.  THE
 JV0918'DESCRIPTION IS NO LONGER ADEQUATE FOR THE HOMES HAVE BEEN REPLACED AN
 JV0918'BUSINESS PARK WITH NEW BUILDINGS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0922 ***********************************************************************
 JV0922  DESIGNATION -  HALE 2 RM 4
 JV0922  PID         -  JV0922
 JV0922  STATE/COUNTY-  MD/BALTIMORE
 JV0922  COUNTRY     -  US
 JV0922  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0922
 JV0922                         *CURRENT SURVEY CONTROL
 JV0922  ______________________________________________________________________
 JV0922* NAD 83(1986) POSITION- 39 15 03.10   (N) 076 41 01.15   (W)   HD_HELD1
 JV0922* NAVD 88 ORTHO HEIGHT -    41.11  (meters)      134.9   (feet) RESET
 JV0922  ______________________________________________________________________
 JV0922  GEOID HEIGHT    -        -32.572 (meters)                     GEOID18
 JV0922  VERT ORDER      -  THIRD
 JV0922
 JV0922.The horizontal coordinates were determined by differentially corrected
 JV0922.hand held GPS observations or other comparable positioning techniques
 JV0922.and have an estimated accuracy of +/- 3 meters.
 JV0922
 JV0922.The orthometric height was computed from unverified reset data.
 JV0922
 JV0922.No vertical observational check was made to the station.
 JV0922
 JV0922.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0922.GEOID18 height accuracy estimate available here.
 JV0922
 JV0922.Click photographs - Photos may exist for this station.
 JV0922
 JV0922;                    North         East    Units  Estimated Accuracy
 JV0922;SPC MD       -   175,902.5     427,306.2     MT  (+/- 3 meters HH1 GPS) 
 JV0922
 JV0922_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5472145966(NAD 83)
 JV0922
 JV0922                          SUPERSEDED SURVEY CONTROL
 JV0922
 JV0922  NGVD 29 (??/??/??)   41.32   (m)          135.6    (f) RESET       3  
 JV0922
 JV0922.Superseded values are not recommended for survey control.
 JV0922
 JV0922.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0922.See file dsdata.pdf to determine how the superseded data were derived.
 JV0922
 JV0922_MARKER: DR = REFERENCE MARK DISK
 JV0922_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0922_STAMPING: HALE 2 NO 4 1968
 JV0922_MARK LOGO: CGS
 JV0922_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0922+STABILITY: SURFACE MOTION
 JV0922
 JV0922  HISTORY     - Date     Condition        Report By
 JV0922  HISTORY     - 1968     MONUMENTED       CGS
 JV0922  HISTORY     - 1968     GOOD             MDSRC
 JV0922  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 JV0922
 JV0922                          STATION DESCRIPTION
 JV0922
 JV0922'DESCRIBED BY MD STATE ROADS COMM 1968
 JV0922'1 MI NE FROM HALETHORPE.
 JV0922'TO REACH FROM THE POST OFFICE IN HALETHORPE, MARYLAND (WAELCHLI
 JV0922'AVENUE AND SULPHUR SPRING ROAD) PROCEED EAST ALONG SULPHUR SPRING
 JV0922'ROAD FOR 0.3 MILE TO HOUSE NO. 1619 AND MARK NEAR THE INTERCHANGE
 JV0922'AREA OF INTERSTATE ROUTES 95 AND 695, 24.3 FEET WEST OF TOP OF
 JV0922'BANK ALONG THE I-695 SOUTHBOUND EXIT RAMP TO I-95 WESTBOUND, 73
 JV0922'FEET SOUTH OF EDGE OF WOODS, 124.5 FEET AND NE OF A LONE 8-INCH
 JV0922'CHERRY TREE.  A STANDARD REFERENCE MARK DISK SET IN A CONCRETE
 JV0922'POST FLUSH TO THE GROUND AND STAMPED HALE 2, NO. 4, 1968.
 JV0922
 JV0922                          STATION RECOVERY (2003)
 JV0922
 JV0922'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0922'THE STATION AND REFERENCE MARKS 3 AND 4 WERE NOT FOUND.  THE
 JV0922'DESCRIPTION IS NO LONGER ADEQUATE FOR THE HOMES HAVE BEEN REPLACED AN
 JV0922'BUSINESS PARK WITH NEW BUILDINGS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0917 ***********************************************************************
 JV0917  DESIGNATION -  HALE RM 1
 JV0917  PID         -  JV0917
 JV0917  STATE/COUNTY-  MD/BALTIMORE
 JV0917  COUNTRY     -  US
 JV0917  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0917
 JV0917                         *CURRENT SURVEY CONTROL
 JV0917  ______________________________________________________________________
 JV0917* NAD 83(1986) POSITION- 39 15 01.75   (N) 076 40 49.64   (W)   HD_HELD1
 JV0917* NAVD 88 ORTHO HEIGHT -    42.582 (meters)      139.70  (feet) POSTED
 JV0917  ______________________________________________________________________
 JV0917  GEOID HEIGHT    -        -32.583 (meters)                     GEOID18
 JV0917  DYNAMIC HEIGHT  -         42.56  (meters)      139.6   (feet) COMP
 JV0917  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV0917
 JV0917  VERT ORDER      -  * POSTED, SEE BELOW
 JV0917
 JV0917.The horizontal coordinates were determined by differentially corrected
 JV0917.hand held GPS observations or other comparable positioning techniques
 JV0917.and have an estimated accuracy of +/- 3 meters.
 JV0917
 JV0917.The orthometric height was determined by differential leveling
 JV0917.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 JV0917
 JV0917.* This is a POSTED BENCH MARK height.
 JV0917
 JV0917.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0917.GEOID18 height accuracy estimate available here.
 JV0917
 JV0917.Click photographs - Photos may exist for this station.
 JV0917
 JV0917.The dynamic height is computed by dividing the NAVD 88
 JV0917.geopotential number by the normal gravity value computed on the
 JV0917.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0917.degrees latitude (g = 980.6199 gals.).
 JV0917
 JV0917.The modeled gravity was interpolated from observed gravity values.
 JV0917
 JV0917;                    North         East    Units  Estimated Accuracy
 JV0917;SPC MD       -   175,861.8     427,582.3     MT  (+/- 3 meters HH1 GPS) 
 JV0917
 JV0917_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5499645919(NAD 83)
 JV0917
 JV0917                          SUPERSEDED SURVEY CONTROL
 JV0917
 JV0917  NGVD 29 (11/26/84)   42.797  (m)          140.41   (f) ADJUSTED    2 0
 JV0917
 JV0917.Superseded values are not recommended for survey control.
 JV0917
 JV0917.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0917.See file dsdata.pdf to determine how the superseded data were derived.
 JV0917
 JV0917_MARKER: DR = REFERENCE MARK DISK
 JV0917_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0917_STAMPING: HALE NO 1 1957
 JV0917_MARK LOGO: CGS
 JV0917_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0917+STABILITY: SURFACE MOTION
 JV0917
 JV0917  HISTORY     - Date     Condition        Report By
 JV0917  HISTORY     - 1957     MONUMENTED       CGS
 JV0917  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 JV0917
 JV0917                          STATION DESCRIPTION
 JV0917
 JV0917'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0917'1 MI NE FROM HALETHORPE.
 JV0917'TO REACH FROM THE INTERSECTION OF RIDGE AVENUE AND FAIRVIEW
 JV0917'AVENUE IN HALETHORPE, GO EAST ON RIDGE AVENUE FOR 0.3 MILE TO
 JV0917'JUNCTION OF U.S. HIGHWAY NO. 1, GO NORTHEAST ON U.S. HIGHWAY NO. 1
 JV0917'FOR 0.6 MILE TO SULPHUR SPRING ROAD, TURN LEFT AND GO 0.7 MILE
 JV0917'ON SULPHUR SPRINGS ROAD TO GRAY HOUSE ON LEFT NO. 1623.  TURN
 JV0917'SHARP RIGHT ON NEW ROAD AND GO NORTHEAST FOR 0.15 MILE.  IT IS
 JV0917'78.60 FEET EAST OF THE TRIANGULATION STATION, AND 28 FEET
 JV0917'NORTH OF THE EDGE OF A ROAD FILL.  A STANDARD REFERENCE-MARK
 JV0917'DISK, STAMPED HALE NO 1 1957 AND SET IN THE TOP OF A CONCRETE
 JV0917'POST PROJECTING ABOUT 4 INCHES ABOVE GROUND.
 JV0917
 JV0917                          STATION RECOVERY (2003)
 JV0917
 JV0917'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0917'REFERENCE MARK 1 WAS NOT FOUND.  THE DESCRIPTION IS NO LONGER ADEQUATE
 JV0917'FOR THE HOMES HAVE BEEN REPLACED BY HIGHWAY CONSTRUCTION AND A
 JV0917'BUSINESS PARK WITH NEW BUILDINGS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0921 ***********************************************************************
 JV0921  DESIGNATION -  HALE RM 2
 JV0921  PID         -  JV0921
 JV0921  STATE/COUNTY-  MD/BALTIMORE
 JV0921  COUNTRY     -  US
 JV0921  USGS QUAD   -  BALTIMORE WEST (2016)
 JV0921
 JV0921                         *CURRENT SURVEY CONTROL
 JV0921  ______________________________________________________________________
 JV0921* NAD 83(1986) POSITION- 39 15 01.87   (N) 076 40 51.78   (W)   HD_HELD1
 JV0921* NAVD 88 ORTHO HEIGHT -    43.048 (meters)      141.23  (feet) ADJUSTED
 JV0921  ______________________________________________________________________
 JV0921  GEOID HEIGHT    -        -32.581 (meters)                     GEOID18
 JV0921  DYNAMIC HEIGHT  -         43.025 (meters)      141.16  (feet) COMP
 JV0921  MODELED GRAVITY -    980,101.4   (mgal)                       NAVD 88
 JV0921
 JV0921  VERT ORDER      -  SECOND    CLASS 0
 JV0921
 JV0921.The horizontal coordinates were determined by differentially corrected
 JV0921.hand held GPS observations or other comparable positioning techniques
 JV0921.and have an estimated accuracy of +/- 3 meters.
 JV0921
 JV0921.The orthometric height was determined by differential leveling and
 JV0921.adjusted by the NATIONAL GEODETIC SURVEY
 JV0921.in June 1991.
 JV0921
 JV0921.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0921.GEOID18 height accuracy estimate available here.
 JV0921
 JV0921.Click photographs - Photos may exist for this station.
 JV0921
 JV0921.The dynamic height is computed by dividing the NAVD 88
 JV0921.geopotential number by the normal gravity value computed on the
 JV0921.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0921.degrees latitude (g = 980.6199 gals.).
 JV0921
 JV0921.The modeled gravity was interpolated from observed gravity values.
 JV0921
 JV0921;                    North         East    Units  Estimated Accuracy
 JV0921;SPC MD       -   175,865.3     427,530.9     MT  (+/- 3 meters HH1 GPS) 
 JV0921
 JV0921_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5494545924(NAD 83)
 JV0921
 JV0921                          SUPERSEDED SURVEY CONTROL
 JV0921
 JV0921  NGVD 29 (11/26/84)   43.261  (m)          141.93   (f) ADJUSTED    2 0
 JV0921
 JV0921.Superseded values are not recommended for survey control.
 JV0921
 JV0921.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0921.See file dsdata.pdf to determine how the superseded data were derived.
 JV0921
 JV0921_MARKER: DR = REFERENCE MARK DISK
 JV0921_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0921_STAMPING: HALE NO 2 1957
 JV0921_MARK LOGO: CGS
 JV0921_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0921+STABILITY: SURFACE MOTION
 JV0921
 JV0921  HISTORY     - Date     Condition        Report By
 JV0921  HISTORY     - 1957     MONUMENTED       CGS
 JV0921  HISTORY     - 20030924 MARK NOT FOUND   USPSQD
 JV0921
 JV0921                          STATION DESCRIPTION
 JV0921
 JV0921'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV0921'1 MI NE FROM HALETHORPE.
 JV0921'TO REACH FROM INTERSECTION OF RIDGE AVENUE AND FAIRVIEW AVENUE
 JV0921'IN HALETHORPE, GO EAST ON RIDGE AVENUE FOR 0.3 MILE TO JUNCTION
 JV0921'OF U.S. HIGHWAY NO. 1, GO NORTHEAST ON U.S. HIGHWAY NO. 1 FOR
 JV0921'0.6 MILE TO SULPHUR SPRING ROAD TURN LEFT AND GO 0.7 MILE ON
 JV0921'SULPHUR SPRINGS ROAD TO GRAY HOUSE ON LEFT NO. 1623.  TURN SHARP
 JV0921'RIGHT ON NEW ROAD AND GO NORTHEAST FOR 0.15 MILE.  IT IS 90.15
 JV0921'FEET WEST OF THE TRIANGULTION STATION, 20 FEET SOUTH OF A ROAD
 JV0921'FILL, AND 12 FEET NORTH OF THE EDGE OF A ROAD FILL.  A STANDARD
 JV0921'REFERENCE-MARK DISK, STAMPED HALE NO 2 1957 AND SET IN THE TOP
 JV0921'OF A CONCRETE POST PROJECTING ABOUT 2 INCHES ABOVE GROUND.
 JV0921
 JV0921                          STATION RECOVERY (2003)
 JV0921
 JV0921'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0921'REFERENCE MARK 2 WAS NOT FOUND.  THE DESCRIPTION IS NO LONGER ADEQUATE
 JV0921'FOR THE HOMES HAVE BEEN REPLACED BY HIGHWAY CONSTRUCTION AND A
 JV0921'BUSINESS PARK WITH NEW BUILDINGS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3999 ***********************************************************************
 JU3999  DESIGNATION -  HALEY 2
 JU3999  PID         -  JU3999
 JU3999  STATE/COUNTY-  MD/CECIL
 JU3999  COUNTRY     -  US
 JU3999  USGS QUAD   -  CECILTON (2016)
 JU3999
 JU3999                         *CURRENT SURVEY CONTROL
 JU3999  ______________________________________________________________________
 JU3999* NAD 83(1991) POSITION- 39 27 26.35061(N) 075 52 17.63210(W)   ADJUSTED
 JU3999* NAD 83(1991) ELLIP HT-   -16.837 (meters)        (01/27/92)   ADJUSTED
 JU3999* NAVD 88 ORTHO HEIGHT -    16.53  (meters)       54.2   (feet) RESET
 JU3999  ______________________________________________________________________
 JU3999  GEOID HEIGHT    -        -33.419 (meters)                     GEOID18
 JU3999  NAD 83(1991) X  -  1,203,689.164 (meters)                     COMP
 JU3999  NAD 83(1991) Y  - -4,782,041.553 (meters)                     COMP
 JU3999  NAD 83(1991) Z  -  4,031,635.297 (meters)                     COMP
 JU3999  LAPLACE CORR    -         -1.34  (seconds)                    DEFLEC18
 JU3999  HORZ ORDER      -  THIRD
 JU3999  VERT ORDER      -  THIRD
 JU3999  ELLP ORDER      -  FOURTH    CLASS I
 JU3999
 JU3999.The horizontal coordinates were established by GPS observations
 JU3999.and adjusted by the National Geodetic Survey in January 1992.
 JU3999
 JU3999.The orthometric height was computed from unverified reset data.
 JU3999
 JU3999.No vertical observational check was made to the station.
 JU3999
 JU3999.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3999.GEOID18 height accuracy estimate available here.
 JU3999
 JU3999.Click photographs - Photos may exist for this station.
 JU3999
 JU3999.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JU3999
 JU3999.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3999
 JU3999.The ellipsoidal height was determined by GPS observations
 JU3999.and is referenced to NAD 83.
 JU3999
 JU3999. The following values were computed from the NAD 83(1991) position.
 JU3999
 JU3999;                    North         East     Units Scale Factor Converg.
 JU3999;SPC MD       -   199,376.565   497,117.585   MT  1.00000129   +0 42 29.7
 JU3999;SPC MD       -   654,121.28  1,630,959.94   sFT  1.00000129   +0 42 29.7
 JU3999;UTM  18      - 4,367,890.276   425,017.373   MT  0.99966922   -0 33 14.1
 JU3999
 JU3999!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3999!SPC MD       -   1.00000264  x   1.00000129  =   1.00000393
 JU3999!UTM  18      -   1.00000264  x   0.99966922  =   0.99967186
 JU3999
 JU3999:                Primary Azimuth Mark                     Grid Az
 JU3999:SPC MD       -  HALEY 2 AZIMUTH OBJECT                   355 09 22.8
 JU3999:UTM  18      -  HALEY 2 AZIMUTH OBJECT                   356 25 06.6
 JU3999
 JU3999_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2501767890(NAD 83)
 JU3999
 JU3999|---------------------------------------------------------------------|
 JU3999| PID    Reference Object                     Distance      Geod. Az  |
 JU3999|                                                           dddmmss.s |
 JU3999| JU1145 HALEY                               181.525 METERS 00353     |
 JU3999| JU4126 HALEY 2 RM 5                                       09818     |
 JU3999| JU4000 HALEY 2 RM 6                         50.559 METERS 17337     |
 JU3999| CR8272 HALEY 2 AZIMUTH OBJECT                             3555152.5 |
 JU3999|---------------------------------------------------------------------|
 JU3999
 JU3999                          SUPERSEDED SURVEY CONTROL
 JU3999
 JU3999  NAD 83(1986)-  39 27 26.34325(N)    075 52 17.64007(W) AD(       ) 3
 JU3999  NAD 27      -  39 27 25.94770(N)    075 52 18.86636(W) AD(       ) 3
 JU3999  NGVD 29 (11/18/05)   16.77   (m)           55.0    (f) RESET       3  
 JU3999  NGVD 29              16.77   (m)           55.0    (f) LEVELING    3  
 JU3999
 JU3999.Superseded values are not recommended for survey control.
 JU3999
 JU3999.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3999.See file dsdata.pdf to determine how the superseded data were derived.
 JU3999
 JU3999_MARKER: DH = HORIZONTAL CONTROL DISK
 JU3999_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3999_STAMPING: HALEY 2 1986
 JU3999_MARK LOGO: NGS
 JU3999_PROJECTION: RECESSED 9 CENTIMETERS
 JU3999_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU3999_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3999+STABILITY: SURFACE MOTION
 JU3999_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU3999+SATELLITE: SATELLITE OBSERVATIONS - November 23, 2025
 JU3999
 JU3999  HISTORY     - Date     Condition        Report By
 JU3999  HISTORY     - 1986     MONUMENTED       NGS
 JU3999  HISTORY     - 1986     GOOD             NGS
 JU3999  HISTORY     - 1988     GOOD             NGS
 JU3999  HISTORY     - 19880915 GOOD             NGS
 JU3999  HISTORY     - 19881109 GOOD             NGS
 JU3999  HISTORY     - 1989     GOOD             NGS
 JU3999  HISTORY     - 20030316 GOOD             USPSQD
 JU3999  HISTORY     - 20251123 GOOD             PROFLN
 JU3999
 JU3999                          STATION DESCRIPTION
 JU3999
 JU3999'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 JU3999'THE STATION IS LOCATED ABOUT 6.5 KM (4 MI) NORTH OF CECILTON, 0.25 KM
 JU3999'(0.15 MI) SOUTH OF THE STATE HIGHWAY 213 BRIDGE OVER THE BOHEMIA RIVER
 JU3999'AND 0.25 KM (0.15 MI) SOUTH OF CAYOTS.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JU3999'
 JU3999'TO REACH THE STATION FROM THE POST OFFICE IN CECILTON, GO EAST FOR
 JU3999'0.15 KM (0.1 MI) ON MAIN STREET TO A CROSSROADS.  TURN LEFT AND GO
 JU3999'NORTH FOR 6.45 KM (4 MI) ON STATE HIGHWAY 213 TO THE STATION ON THE
 JU3999'LEFT.
 JU3999'
 JU3999'THE STATION IS A STANDARD NGS DISK STAMPED  ---HALEY 2 1986---, SET
 JU3999'INTO THE TOP OF A ROUND CONCRETE MONUMENT 25 CM IN DIAMETER FLUSH WITH
 JU3999'GROUND.  LOCATED 11.9 METERS (39.0 FT) WEST FROM THE CENTER OF STATE
 JU3999'HIGHWAY 213, 34.6 METERS (113.5 FT) WEST FROM A POWERLINE POLE
 JU3999'NUMBERED 2, 26.7 METERS (87.7 FT) SOUTH FROM A POWERLINE POLE NUMBERED
 JU3999'39429 32968 AND 0.3 METERS (1.1 FT) EAST FROM A CARSONITE WITNESS
 JU3999'POST.
 JU3999'
 JU3999'THE UNDERGROUND MARK IS A STANDARD NGS DISK STAMPED
 JU3999'---HALEY 2 1986---, SET INTO AN IRREGULAR MASS OF CONCRETE 0.9 METERS
 JU3999'BELOW THE SURFACE.
 JU3999'
 JU3999'REFERENCE MARK NO. 5 IS A STANDARD NGS DISK STAMPED
 JU3999'---HALEY 2 NO 5 1986---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 JU3999'25 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 5.5 METERS (18.0 FT)
 JU3999'EAST FROM THE CENTER OF A ACCESS ROAD, 22.6 METERS (74.0 FT) EAST FROM
 JU3999'THE CENTER OF STATE HIGHWAY 213, 1.6 METERS (5.1 FT) SOUTH FROM A
 JU3999'POWERLINE POLE NUMBERED 2 AND 0.9 METERS (2.9 FT) SOUTH FROM A
 JU3999'CARSONITE WITNESS POST MARK IS LEVEL WITH THE STATION.
 JU3999'
 JU3999'REFERENCE MARK NO. 6 IS A STANDARD NGS DISK STAMPED
 JU3999'---HALEY 2 NO 6 1986---, SET INTO THE TOP OF A ROUND CONCRETE MONUMENT
 JU3999'25 CM IN DIAMETER FLUSH WITH GROUND.  LOCATED 9.2 METERS (30.2 FT)
 JU3999'WEST FROM THE CENTER OF STATE HIGHWAY 213, 1.5 METERS (4.9 FT)
 JU3999'WEST-NORTHWEST FROM A POWERLINE POLE NO. 39431, 1.4 METERS (4.5 FT)
 JU3999'EAST-NORTHEAST FROM A POWERLINE GUY ANCHOR POLE AND 0.3 METERS
 JU3999'(1.1 FT) EAST FROM A CARSONITE WITNESS POST.  MARK IS 1.1 METERS ABOVE
 JU3999'THE STATION.
 JU3999'
 JU3999'THE AZIMUTH MARK IS A CHISLED CROSS IN A CURB ALONG THE SOUTH SIDE OF
 JU3999'A EAST WEST NARROW ROAD.  IT IS 1.0 METER NORTH OF A POWERLINE POLE.
 JU3999'THIS IS A TEMPORARY POINT WHICH WAS SET TO PRESERVE THE POLARIS
 JU3999'AZIMUTH WHICH WAS OBSERVED.  A PERMINENT AZIMUTH MARK WILL BE
 JU3999'ESTABLISHED FROM THIS POINT WHEN THE CONSTRUCTION ON THE BRIDGE IS
 JU3999'COMPLETED.  THIS POINT WILL HOLD THIS AZIMUTH FOR SEVERAL YEARS.  A
 JU3999'COMPLETE NEW DESCRIPTION WILL BE WRITTEN AT A LATER DATE WHEN THE NEW
 JU3999'NEW AZIMUTH IS SET.
 JU3999
 JU3999                          STATION RECOVERY (1986)
 JU3999
 JU3999'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
 JU3999'RECOVERED IN GOOD CONDITION.
 JU3999
 JU3999                          STATION RECOVERY (1988)
 JU3999
 JU3999'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 (AJL)
 JU3999'THE STATION IS LOCATED ABOUT 6.2 KM (3.85 MI) NORTH OF CECILTON, 3.2
 JU3999'KM (2.0 MI) SOUTH OF CAYOTS, 0.2 KM (0.15 MI) SOUTH OF THE SOUTH END
 JU3999'OF THE HIGHWAY BRIDGE OVER THE BOHEMIA RIVER, AND ON TOP OF A LOW
 JU3999'HIGHWAY CUT ON THE OUTSIDE OF A CURVE IN THE HIGHWAY.
 JU3999'OWNERSHIP--MARYLAND STATE HIGHWAY DEPARTMENT RIGHT-OF-WAY.
 JU3999'
 JU3999'TO REACH THE STATION FROM THE POST OFFICE IN CECILTON, GO EAST FOR 0.2
 JU3999'KM (0.1 MI) ON STATE HIGHWAY 282, MAIN STREET, TO THE JUNCTION OF
 JU3999'STATE HIGHWAY 213.  TURN RIGHT AND GO NORTH FOR 6.2 KM (3.85 MI) ON
 JU3999'HIGHWAY 213, BOHEMIA AVENUE, TO THE STATION ON THE LEFT.
 JU3999'
 JU3999'THE STATION IS A STANDARD NGS DISK STAMPED---HALEY 2 1986---, SET INTO
 JU3999'THE TOP OF A ROUND CONCRETE MONUMENT 24 CM IN DIAMETER FLUSH WITH
 JU3999'GROUND.  LOCATED 50.6 METERS (166.0 FT) NORTH FROM A REFERENCE MARK NO
 JU3999'6, 34.7 METERS (113.7 FT) WEST FROM A POWER POLE NUMBER 2, 26.8 METERS
 JU3999'(87.9 FT) SOUTH FROM A POWER POLE NUMBER 39429-32968, 11.5 METERS
 JU3999'(37.7 FT) WEST FROM THE CENTER OF THE HIGHWAY, AND 0.3 METERS (1.0 FT)
 JU3999'EAST FROM A FIBERGLASS WITNESS POST.
 JU3999'
 JU3999'THE UNDERGROUND MARK IS A STANDARD NGS DISK STAMPED---HALEY 2 1986---,
 JU3999'SET INTO AN IRREGULAR MASS OF CONCRETE 0.9 METERS BELOW THE SURFACE.
 JU3999'
 JU3999'DESCRIBED BY C.L. SMITH, TYPED BY R.L. ZURFLUH.
 JU3999
 JU3999                          STATION RECOVERY (1988)
 JU3999
 JU3999'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 JU3999'RECOVERED IN GOOD CONDITION.
 JU3999
 JU3999                          STATION RECOVERY (1988)
 JU3999
 JU3999'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 JU3999'RECOVERED IN GOOD CONDITION.
 JU3999
 JU3999                          STATION RECOVERY (1989)
 JU3999
 JU3999'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 JU3999'FROM THE POST OFFICE IN CECILTON, GO EAST ON STATE HIGHWAY 282 (MAIN
 JU3999'STREET) FOR 0.15 KM (0.10 MI) TO A CROSSROADS.  TURN LEFT AND GO
 JU3999'NORTHERLY ON STATE HIGHWAY 213 (BOHEMIA AVENUE) FOR 6.45 KM (4.00 MI)
 JU3999'TO THE MARK ON THE LEFT, 11.9 M (39.0 FT) WEST FROM THE CENTER OF
 JU3999'STATE HIGHWAY 213, 34.6 M (113.5 FT) WEST FROM A POWERLINE POLE
 JU3999'NUMBERED 2 AND 26.7 M (87.6 FT) SOUTH FROM A POWERLINE POLE NUMBERED
 JU3999'39429 32968.  THE MARK IS 0.34 METERS  E FROM  A WITNESS POST.  THE
 JU3999'MARK IS 1.0 M ABOVE THE ROAD.
 JU3999
 JU3999                          STATION RECOVERY (2003)
 JU3999
 JU3999'RECOVERY NOTE BY US POWER SQUADRON 2003 (DET)
 JU3999'ADD TO DESCRIPTION - NO WITNESS POST.  MARK IS 2 FEET WEST OF A 3 FOOT
 JU3999'STAKE WITH A BLUE RIBBON ON IT.  THE STAKE IS ON THE OUTSIDE EDGE OF A
 JU3999'CULTIVATED FIELD AND THE BENCHMARK IS ON THE EDGE OF THE FIELD.
 JU3999'MARKER IS INTACT AT GROUND LEVEL BUT MAY HAVE BEEN STRUCK BY A PLOW.
 JU3999
 JU3999                          STATION RECOVERY (2025)
 JU3999
 JU3999'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JU3999'SURPRISING IT HAS NOT BEEN PLOWED OUT BEING AT THE EDGE OF A PLOWED
 JU3999'FIELD, 113.5 FT (34.6 M) WEST ACROSS THE HIGHWAY FROM REFERENCE MARK
 JU3999'5.  IT IS 86 FT (26.2 M) NORTHERLY FROM A SIGN - SPEED LIMIT 55 - 56
 JU3999'FT (17.1 M) SOUTH OF A POINT LINED UP WITH THE SIDEWALK AND FRONT DOOR
 JU3999'OF A WHITE HOUSE WITH BLACK SHUTTERS ACROSS THE HIGHWAY, 6 FT (1.8 M)
 JU3999'WEST OF THE CENTRAL OVERHEAD POWER LINE, 3 FT (0.9 M) WEST OF THE TOP
 JU3999'OF THE BANK.
 JU3999'
 JU3999'RM 5 WAS RECOVERED AS DESCRIBED, 1 FT (0.3 M) WEST OF A BOARD FENCE,
 JU3999'OVERGROWN BY BUSHES AND IVY.
 JU3999'
 JU3999'RM 6 IS AT THE LOCATION DESCRIBED BUT THE DISK IS MISSING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU4126 ***********************************************************************
 JU4126  DESIGNATION -  HALEY 2 RM 5
 JU4126  PID         -  JU4126
 JU4126  STATE/COUNTY-  MD/CECIL
 JU4126  COUNTRY     -  US
 JU4126  USGS QUAD   -  CECILTON (2016)
 JU4126
 JU4126                         *CURRENT SURVEY CONTROL
 JU4126  ______________________________________________________________________
 JU4126* NAD 83(1986) POSITION- 39 27 31.     (N) 075 52 17.     (W)   SCALED
 JU4126* NAVD 88 ORTHO HEIGHT -    16.55  (meters)       54.3   (feet) RESET
 JU4126  ______________________________________________________________________
 JU4126  GEOID HEIGHT    -        -33.418 (meters)                     GEOID18
 JU4126  VERT ORDER      -  THIRD
 JU4126
 JU4126.The horizontal coordinates were scaled from a map and have
 JU4126.an estimated accuracy of +/- 6 seconds.
 JU4126
 JU4126.The orthometric height was computed from unverified reset data.
 JU4126
 JU4126.No vertical observational check was made to the station.
 JU4126
 JU4126.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU4126.GEOID18 height accuracy estimate available here.
 JU4126
 JU4126.Click photographs - Photos may exist for this station.
 JU4126
 JU4126;                    North         East    Units  Estimated Accuracy
 JU4126;SPC MD       -   199,520.      497,130.      MT  (+/- 180 meters Scaled)
 JU4126
 JU4126_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ250680(NAD 83)
 JU4126
 JU4126                          SUPERSEDED SURVEY CONTROL
 JU4126
 JU4126  NGVD 29 (11/18/05)   16.80   (m)           55.1    (f) RESET       3  
 JU4126
 JU4126.Superseded values are not recommended for survey control.
 JU4126
 JU4126.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU4126.See file dsdata.pdf to determine how the superseded data were derived.
 JU4126
 JU4126_MARKER: DR = REFERENCE MARK DISK
 JU4126_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU4126_STAMPING: HALEY 2 NO 5 1986
 JU4126_MARK LOGO: NGS
 JU4126_PROJECTION: FLUSH
 JU4126_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU4126+STABILITY: SURFACE MOTION
 JU4126_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU4126+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2003
 JU4126
 JU4126  HISTORY     - Date     Condition        Report By
 JU4126  HISTORY     - 1986     MONUMENTED       NGS
 JU4126  HISTORY     - 1986     GOOD             NGS
 JU4126  HISTORY     - 19960721 GOOD             USPSQD
 JU4126  HISTORY     - 20030316 GOOD             USPSQD
 JU4126
 JU4126                          STATION DESCRIPTION
 JU4126
 JU4126'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986
 JU4126'6.5 KM (4.05 MI) NORTH FROM CECILTON.
 JU4126'FROM THE POST OFFICE IN CECILTON, GO EAST ON STATE HIGHWAY 282
 JU4126'(MAIN STREET) FOR 0.15 KM (0.10 MI) TO A CROSSROADS.  TURN LEFT
 JU4126'NORTHERLY ON STATE HIGHWAY 213 (BOHEMIA AVENUE) FOR 6.45 KM (4.00 MI)
 JU4126'TO THE MARK ON THE RIGHT, 22.6 M (74.1 FT) EAST FROM THE CENTER OF
 JU4126'HIGHWAY 213, 5.5 M (18.0 FT) EAST FROM THE CENTER OF A ACCESS ROAD
 JU4126'AND 1.6 M (5.2 FT) SOUTH FROM A POWERLINE POLE NUMBERED 2.
 JU4126'THE MARK IS 0.88 METERS  N FROM  A WITNESS POST
 JU4126'THE MARK IS ABOVE LEVEL WITH ACCESS ROAD.
 JU4126
 JU4126                          STATION RECOVERY (1996)
 JU4126
 JU4126'RECOVERY NOTE BY US POWER SQUADRON 1996
 JU4126'RECOVERED IN GOOD CONDITION.
 JU4126
 JU4126                          STATION RECOVERY (2003)
 JU4126
 JU4126'RECOVERY NOTE BY US POWER SQUADRON 2003 (DET)
 JU4126'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1144 ***********************************************************************
 JU1144  DESIGNATION -  HALEY RM 4
 JU1144  PID         -  JU1144
 JU1144  STATE/COUNTY-  MD/CECIL
 JU1144  COUNTRY     -  US
 JU1144  USGS QUAD   -  CECILTON (2016)
 JU1144
 JU1144                         *CURRENT SURVEY CONTROL
 JU1144  ______________________________________________________________________
 JU1144* NAD 83(1986) POSITION- 39 27 30.88   (N) 075 52 15.88   (W)   HD_HELD1
 JU1144* NAVD 88 ORTHO HEIGHT -     8.188 (meters)       26.86  (feet) ADJUSTED
 JU1144  ______________________________________________________________________
 JU1144  GEOID HEIGHT    -        -33.418 (meters)                     GEOID18
 JU1144  DYNAMIC HEIGHT  -          8.184 (meters)       26.85  (feet) COMP
 JU1144  MODELED GRAVITY -    980,118.5   (mgal)                       NAVD 88
 JU1144
 JU1144  VERT ORDER      -  FIRST     CLASS II
 JU1144
 JU1144.The horizontal coordinates were determined by differentially corrected
 JU1144.hand held GPS observations or other comparable positioning techniques
 JU1144.and have an estimated accuracy of +/- 3 meters.
 JU1144
 JU1144.The orthometric height was determined by differential leveling and
 JU1144.adjusted by the NATIONAL GEODETIC SURVEY
 JU1144.in June 1991.
 JU1144
 JU1144.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1144.GEOID18 height accuracy estimate available here.
 JU1144
 JU1144.Click photographs - Photos may exist for this station.
 JU1144
 JU1144.The dynamic height is computed by dividing the NAVD 88
 JU1144.geopotential number by the normal gravity value computed on the
 JU1144.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1144.degrees latitude (g = 980.6199 gals.).
 JU1144
 JU1144.The modeled gravity was interpolated from observed gravity values.
 JU1144
 JU1144;                    North         East    Units  Estimated Accuracy
 JU1144;SPC MD       -   199,516.8     497,157.7     MT  (+/- 3 meters HH1 GPS) 
 JU1144
 JU1144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2506068029(NAD 83)
 JU1144
 JU1144                          SUPERSEDED SURVEY CONTROL
 JU1144
 JU1144  NGVD 29 (11/26/84)    8.431  (m)           27.66   (f) ADJUSTED    1 2
 JU1144
 JU1144.Superseded values are not recommended for survey control.
 JU1144
 JU1144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1144.See file dsdata.pdf to determine how the superseded data were derived.
 JU1144
 JU1144_MARKER: DR = REFERENCE MARK DISK
 JU1144_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1144_STAMPING: HALEY NO 4 1934
 JU1144_MARK LOGO: CGS
 JU1144_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1144+STABILITY: SURFACE MOTION
 JU1144
 JU1144  HISTORY     - Date     Condition        Report By
 JU1144  HISTORY     - 1951     MONUMENTED       CGS
 JU1144  HISTORY     - 1971     GOOD             NGS
 JU1144
 JU1144                          STATION DESCRIPTION
 JU1144
 JU1144'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1144'3.9 MI N FROM CECILTON.
 JU1144'ABOUT 3.9 MILES NORTH ALONG U.S. HIGHWAY 213 FROM THE INTERSECTION
 JU1144'OF STATE HIGHWAY 282 AT CECILTON, AT THE FOOT OF A STEEP BANK,
 JU1144'450.0 FEET SOUTH OF THE SOUTHWEST END OF THE HIGHWAY BRIDGE OVER
 JU1144'THE BOHEMIA RIVER, 55 FEET EAST OF THE CENTER LINE OF THE HIGHWAY,
 JU1144'30 1/2 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE PAVEMENT ON
 JU1144'THE OLD HIGHWAY, 113 FEET SOUTH OF TELEPHONE POLE NUMBER 146,
 JU1144'166.87 FEET SOUTHEAST AND ACROSS THE HIGHWAY FROM TRIANGULATION
 JU1144'STATION HALEY, 3.0 FEET SOUTHWEST OF A METAL WITNESS POST, ABOUT
 JU1144'1 FOOT BELOW THE LEVEL OF THE HIGHWAY, AND SET IN THE TOP OF A
 JU1144'CONCRETE POST THAT IS LEVEL WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DF7484 ***********************************************************************
 DF7484  DESIGNATION -  HALFWAY
 DF7484  PID         -  DF7484
 DF7484  STATE/COUNTY-  MD/WORCESTER
 DF7484  COUNTRY     -  US
 DF7484  USGS QUAD   -  SALISBURY (2016)
 DF7484
 DF7484                         *CURRENT SURVEY CONTROL
 DF7484  ______________________________________________________________________
 DF7484* NAD 83(1986) POSITION- 38 16 00.42   (N) 075 30 48.26   (W)   HD_HELD1
 DF7484* NAVD 88 ORTHO HEIGHT -    13.867 (meters)       45.50  (feet) ADJUSTED
 DF7484  ______________________________________________________________________
 DF7484  GEOID HEIGHT    -        -36.036 (meters)                     GEOID18
 DF7484  DYNAMIC HEIGHT  -         13.858 (meters)       45.47  (feet) COMP
 DF7484  MODELED GRAVITY -    979,994.8   (mgal)                       NAVD 88
 DF7484
 DF7484  VERT ORDER      -  SECOND    CLASS I
 DF7484
 DF7484.The horizontal coordinates were determined by differentially corrected
 DF7484.hand held GPS observations or other comparable positioning techniques
 DF7484.and have an estimated accuracy of +/- 3 meters.
 DF7484
 DF7484.The orthometric height was determined by differential leveling and
 DF7484.adjusted by the NATIONAL GEODETIC SURVEY
 DF7484.in November 2003.
 DF7484
 DF7484.Significant digits in the geoid height do not necessarily reflect accuracy.
 DF7484.GEOID18 height accuracy estimate available here.
 DF7484
 DF7484.Click photographs - Photos may exist for this station.
 DF7484
 DF7484.The dynamic height is computed by dividing the NAVD 88
 DF7484.geopotential number by the normal gravity value computed on the
 DF7484.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DF7484.degrees latitude (g = 980.6199 gals.).
 DF7484
 DF7484.The modeled gravity was interpolated from observed gravity values.
 DF7484
 DF7484;                    North         East    Units  Estimated Accuracy
 DF7484;SPC MD       -    67,675.0     530,091.8     MT  (+/- 3 meters HH1 GPS) 
 DF7484
 DF7484_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5508835540(NAD 83)
 DF7484
 DF7484                          SUPERSEDED SURVEY CONTROL
 DF7484
 DF7484.No superseded survey control is available for this station.
 DF7484
 DF7484_MARKER: DD = SURVEY DISK
 DF7484_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DF7484_STAMPING: HALFWAY 1962
 DF7484_MARK LOGO: MDBCSM
 DF7484_PROJECTION: RECESSED 8 CENTIMETERS
 DF7484_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DF7484+STABILITY: SURFACE MOTION
 DF7484_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DF7484+SATELLITE: SATELLITE OBSERVATIONS - October 17, 2019
 DF7484
 DF7484  HISTORY     - Date     Condition        Report By
 DF7484  HISTORY     - 1962     MONUMENTED       MDBCSM
 DF7484  HISTORY     - 20010411 GOOD             MDSHA
 DF7484  HISTORY     - 20191017 GOOD             BASE9
 DF7484
 DF7484                          STATION DESCRIPTION
 DF7484
 DF7484'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DF7484'THE STATION IS LOCATED ABOUT 8.5 MILES (13.7 KM) NORTHWEST OF SNOW
 DF7484'HILL, 8.5 MILES (13.7 KM) SOUTHEAST OF SALISBURY.  TO REACH THE
 DF7484'STATION FROM THE INTERSECTION OF U.S.HIGHWAY 50 AND U.S.  BUSINESS
 DF7484'HIGHWAY 13, GO SOUTH ALONG U.S.BUSINESS HIGHWAY 13 FOR 0.13 MILES.
 DF7484'(0.21 KM) TURN LEFT AND GO EAST ALONG MAIN STREET FOR 0.13 MILES (0.21
 DF7484'KM) TO STATE HIGHWAY 12.  TURN RIGHT AND GO SOUTHEAST ALONG STATE
 DF7484'HIGHWAY 12 FOR 8.5 MILES (13.7 KM) TO SAINT LUKES ROAD AND THE STATION
 DF7484'ON THE RIGHT.  THE STATION IS A MARYLAND CONTROL SURVEY DISK SET IN
 DF7484'THE TOP OF A 8 INCH (20 CM) ROUND CONCRETE MONUMENT WHICH IS FLUSH
 DF7484'WITH THE GROUND.  IT IS 38.5 FEET (11.7 M) SOUTHWEST OF THE CENTER
 DF7484'LINE OF THE HIGHWAY, 34.0 FEET (10.4 M) SOUTHEAST OF THE CENTER OF
 DF7484'SAINT LUKES ROAD, 14.0 FEET (4.3 M) SOUTHEAST OF TELEPHONE POLE NUMBER
 DF7484'245, 1.7 FEET (0.5 M) NORTHEAST OF A CARSONITE WITNESS POST AND ABOUT
 DF7484'LEVEL WITH THE HIGHWAY.
 DF7484
 DF7484                          STATION RECOVERY (2019)
 DF7484
 DF7484'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2019 (DRD)
 DF7484'THE MARK IS 11.58 M (38.0 FT) SOUTHWEST OF THE CENTERLINE OF THE
 DF7484'HIGHWAY AS MEASURED FROM THE SINGLE YELLOW PAINT LINE AND 11.13 M
 DF7484'(36.5 FT) SOUTHEAST OF THE CENTERLINE OF SAINT LUKES ROAD AS MEASURED
 DF7484'FROM THE CENTER OF THE DOUBLE YELLOW PAINTED LINES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DF7485 ***********************************************************************
 DF7485  DESIGNATION -  HALFWAY AZ MK
 DF7485  PID         -  DF7485
 DF7485  STATE/COUNTY-  MD/WORCESTER
 DF7485  COUNTRY     -  US
 DF7485  USGS QUAD   -  SALISBURY (2016)
 DF7485
 DF7485                         *CURRENT SURVEY CONTROL
 DF7485  ______________________________________________________________________
 DF7485* NAD 83(1986) POSITION- 38 15 56.96   (N) 075 30 57.92   (W)   HD_HELD1
 DF7485* NAVD 88 ORTHO HEIGHT -    15.324 (meters)       50.28  (feet) ADJUSTED
 DF7485  ______________________________________________________________________
 DF7485  GEOID HEIGHT    -        -36.036 (meters)                     GEOID18
 DF7485  DYNAMIC HEIGHT  -         15.315 (meters)       50.25  (feet) COMP
 DF7485  MODELED GRAVITY -    979,994.6   (mgal)                       NAVD 88
 DF7485
 DF7485  VERT ORDER      -  SECOND    CLASS I
 DF7485
 DF7485.The horizontal coordinates were determined by differentially corrected
 DF7485.hand held GPS observations or other comparable positioning techniques
 DF7485.and have an estimated accuracy of +/- 3 meters.
 DF7485
 DF7485.The orthometric height was determined by differential leveling and
 DF7485.adjusted by the NATIONAL GEODETIC SURVEY
 DF7485.in November 2003.
 DF7485
 DF7485.Significant digits in the geoid height do not necessarily reflect accuracy.
 DF7485.GEOID18 height accuracy estimate available here.
 DF7485
 DF7485.Click photographs - Photos may exist for this station.
 DF7485
 DF7485.The dynamic height is computed by dividing the NAVD 88
 DF7485.geopotential number by the normal gravity value computed on the
 DF7485.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DF7485.degrees latitude (g = 980.6199 gals.).
 DF7485
 DF7485.The modeled gravity was interpolated from observed gravity values.
 DF7485
 DF7485;                    North         East    Units  Estimated Accuracy
 DF7485;SPC MD       -    67,564.5     529,858.8     MT  (+/- 3 meters HH1 GPS) 
 DF7485
 DF7485_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5485235435(NAD 83)
 DF7485
 DF7485                          SUPERSEDED SURVEY CONTROL
 DF7485
 DF7485.No superseded survey control is available for this station.
 DF7485
 DF7485_MARKER: DD = SURVEY DISK
 DF7485_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DF7485_STAMPING: HALFWAY AZ 1962
 DF7485_MARK LOGO: MDBCSM
 DF7485_PROJECTION: PROJECTING 8 CENTIMETERS
 DF7485_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DF7485+STABILITY: SURFACE MOTION
 DF7485_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DF7485+SATELLITE: SATELLITE OBSERVATIONS - October 17, 2019
 DF7485
 DF7485  HISTORY     - Date     Condition        Report By
 DF7485  HISTORY     - 1962     MONUMENTED       MDBCSM
 DF7485  HISTORY     - 20010411 GOOD             MDSHA
 DF7485  HISTORY     - 20191017 GOOD             BASE9
 DF7485
 DF7485                          STATION DESCRIPTION
 DF7485
 DF7485'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 DF7485'THE STATION IS LOCATED ABOUT 8.5 MILES (13.7 KM) NORTHWEST OF SNOW
 DF7485'HILL AND 8.5 MILES (13.7 KM) SOUTHEAST OF SALISBURY.  TO REACH THE
 DF7485'STATION FROM THE INTERSECTION OF U.S.HIGHWAY 50 AND U.S.  BUSINESS
 DF7485'HIGHWAY 13, GO SOUTH ALONG U.S.  BUSINESS HIGHWAY 13 FOR 0.13 MILES.
 DF7485'(0.21 KM) TURN LEFT AND GO EAST ALONG MAIN STREET FOR 0.13 MILES (0.21
 DF7485'KM) TO STATE HIGHWAY 12.  TURN RIGHT AND GO SOUTHEAST ALONG STATE
 DF7485'HIGHWAY 12 FOR 8.5 MILES (13.7 KM) TO SAINT LUKES ROAD.  TURN RIGHT
 DF7485'AND GO WEST ALONG SAINT LUKES ROAD FOR 0.15 MILES (0.24 KM) TO THE
 DF7485'STATION ON THE LEFT.  THE STATION IS A MARYLAND CONTROL SURVEY DISK
 DF7485'SET IN THE TOP OF A 8 INCH (20 CM) ROUND CONCRETE MONUMENT WHICH
 DF7485'PROJECTS ABOUT 3 INCHES.  IT IS 27.6 FEET (8.4 M) SOUTH OF THE CENTER
 DF7485'OF THE ROAD, 8.2 FEET (2.5 M) SOUTHEAST OF TELEPHONE POLE NUMBER 3,
 DF7485'146.2 FEET (44.6 M) NORTHEAST OF THE NORTHEAST CORNER OF HOUSE NUMBER
 DF7485'2410, 1.8 FEET (0.5 M) NORTH OF A CARSONITE WITNESS POST AND ABOUT 2
 DF7485'FEET (0.6 M) HIGHER THAN THE ROAD.
 DF7485
 DF7485                          STATION RECOVERY (2019)
 DF7485
 DF7485'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2019 (DRD)
 DF7485'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5749 ***********************************************************************
 HV5749  DESIGNATION -  HALL
 HV5749  PID         -  HV5749
 HV5749  STATE/COUNTY-  MD/TALBOT
 HV5749  COUNTRY     -  US
 HV5749  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5749
 HV5749                         *CURRENT SURVEY CONTROL
 HV5749  ______________________________________________________________________
 HV5749* NAD 83(1991) POSITION- 38 45 13.26819(N) 076 10 28.85916(W)   ADJUSTED
 HV5749* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5749  ______________________________________________________________________
 HV5749  GEOID HEIGHT    -        -34.515 (meters)                     GEOID18
 HV5749  LAPLACE CORR    -         -4.25  (seconds)                    DEFLEC18
 HV5749  HORZ ORDER      -  THIRD
 HV5749
 HV5749.The horizontal coordinates were established by classical geodetic methods
 HV5749.and adjusted by the National Geodetic Survey in January 1992.
 HV5749
 HV5749.The orthometric height was scaled from a topographic map.
 HV5749
 HV5749.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5749.GEOID18 height accuracy estimate available here.
 HV5749
 HV5749.Click photographs - Photos may exist for this station.
 HV5749
 HV5749.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5749
 HV5749. The following values were computed from the NAD 83(1991) position.
 HV5749
 HV5749;                    North         East     Units Scale Factor Converg.
 HV5749;SPC MD       -   120,987.707   471,737.039   MT  0.99995211   +0 31 04.8
 HV5749;SPC MD       -   396,940.50  1,547,690.60   sFT  0.99995211   +0 31 04.8
 HV5749;UTM  18      - 4,290,098.419   397,928.840   MT  0.99972829   -0 44 07.4
 HV5749
 HV5749!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5749!SPC MD       -   1.00000514  x   0.99995211  =   0.99995725
 HV5749!UTM  18      -   1.00000514  x   0.99972829  =   0.99973343
 HV5749
 HV5749:                Primary Azimuth Mark                     Grid Az
 HV5749:SPC MD       -  BARNETT                                  320 14 56.3
 HV5749:UTM  18      -  BARNETT                                  321 30 08.5
 HV5749
 HV5749_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9792890098(NAD 83)
 HV5749
 HV5749|---------------------------------------------------------------------|
 HV5749| PID    Reference Object                     Distance      Geod. Az  |
 HV5749|                                                           dddmmss.s |
 HV5749| HV5713 BARNETT                             APPROX. 1.2 KM 3204601.1 |
 HV5749|---------------------------------------------------------------------|
 HV5749
 HV5749                          SUPERSEDED SURVEY CONTROL
 HV5749
 HV5749  NAD 83(1986)-  38 45 13.26393(N)    076 10 28.87327(W) AD(       ) 3
 HV5749  NAD 27      -  38 45 12.78400(N)    076 10 30.09000(W) AD(       ) 3
 HV5749  USSD        -  38 45 13.16100(N)    076 10 29.85700(W) AD(       ) 3
 HV5749
 HV5749.Superseded values are not recommended for survey control.
 HV5749
 HV5749.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5749.See file dsdata.pdf to determine how the superseded data were derived.
 HV5749
 HV5749_MARKER: H = DRILL HOLE
 HV5749_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5749_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5749
 HV5749  HISTORY     - Date     Condition        Report By
 HV5749  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5749  HISTORY     - 1940     GOOD             CGS
 HV5749  HISTORY     - 1943     POOR             CGS
 HV5749  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5749
 HV5749                          STATION DESCRIPTION
 HV5749
 HV5749'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5749'STATION IS ON THE SOUTHERN SHORE OF MILES RIVER, ABOUT 100 YARDS
 HV5749'W OF W END OF RAILROAD TRESTLE ACROSS ENTRANCE TO OAK CREEK, AND
 HV5749'100 YARDS E OF ROYAL OAK RAILWAY STATION.  STATION IS IN MARSH
 HV5749'ABOUT 1 FOOT ABOVE HIGH WATER, 30 YARDS SW OF SHORE, 40 YARDS S OF
 HV5749'SHORE, 85 YARDS WNW OF SHORE AT CORNER OF SHED, AND 35 YARDS NNE
 HV5749'OF NEAR RAIL OF RAILWAY TRACK.  STATION MARK IS A HOLE IN THE
 HV5749'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5749'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5749'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5749'COUNTER-SUNK IN TOP OF POST. SUBSURFACE MARK IS CENTER OF 2-INCH
 HV5749'DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW THE BASE OF THE
 HV5749'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5749'ARE AS FOLLOWS--CHIMNEY OF MIDDLE OF HALL BUILDING, 2-5/8 MILES,
 HV5749'N 11 DEG 11 MIN W.  NEAR CHIMNEY OF SPECKS HOUSE, 1-5/8 MILES, N
 HV5749'23 DEG 26 MIN E.  CHIMNEY OF DORRANCES HOUSE, 2-1/2 MILES, N 32
 HV5749'DEG 33 MIN E.  CHIMNEY ON SE END OF HOUSE, 1/2 MILE, N 69 DEG 18
 HV5749'MIN E.  LEFT TANGENT OF SHED, 85 YARDS, S 72 DEG 6 MIN E.  NW
 HV5749'PEAK OF BARN, 1/4 MILE, S 53 DEG 19 MIN E.  N PEAK OF KIRBYS
 HV5749'HOUSE, 1/2 MILE, S 15 DEG 24 MIN W. CHIMNEY OF HOUSE, 1/4 MILE, S
 HV5749'62 DEG 23 MIN W.  CHIMNEY ON RAILROAD STATION, 100 YARDS, S 79
 HV5749'DEG 58 MIN W.  LEFT CHIMNEY OF HOUSE, 1/2 MILE, N 68 DEG 36 MIN W.
 HV5749
 HV5749                          STATION RECOVERY (1940)
 HV5749
 HV5749'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5749'STATION IS ON THE SOUTHERN SHORE OF MILES RIVER, AT WESTERN
 HV5749'APPROACH TO BRIDGE ACROSS OAK CREEK.  MARK RECOVERED AS DESCRIBED.
 HV5749'DESCRIPTION ADEQUATE, EXCEPT THAT STATION IS NOW 10.5 METERS N OF
 HV5749'N EDGE OF ROAD AND 69.0 METERS W OF W EDGE OF HIGHWAY BRIDGE
 HV5749'ACROSS OAK CREEK.
 HV5749'
 HV5749'TOP OF MARK PROJECTS 3 INCHES ABOVE SURFACE OF GROUND, AND IS
 HV5749'PARTLY CRACKED BUT FIRMLY IN POSITION.
 HV5749
 HV5749                          STATION RECOVERY (1943)
 HV5749
 HV5749'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (LPR)
 HV5749'MARK WAS RECOVERED AS ORIGINALLY DESCRIBED AND AS DESCRIBED IN
 HV5749'1940 (SEE RECOVERY NOTE OF L.W.S.).  THE TOP TWO OR THREE INCHES
 HV5749'OF THE MARK HAVE CRACKED COMPLETELY OFF.  REMAINDER OF MARK IS IN
 HV5749'GOOD CONDITION AND FIRMLY IN PLACE.
 HV5749
 HV5749                          STATION RECOVERY (1961)
 HV5749
 HV5749'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5749'STATION NOT RECOVERED AFTER EXTENSIVE PROBING AT THE STATION SITE
 HV5749'FROM THE REFERENCE DISTANCES GIVEN IN THE 1940 RECOVERY NOTES. THE
 HV5749'SUB-SURFACE MARK IS PROBABLY STILL IN PLACE BUT WILL REQUIRE
 HV5749'EXTENSIVE DIGGING TO LOCATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6529 ***********************************************************************
 HV6529  DESIGNATION -  HALL
 HV6529  PID         -  HV6529
 HV6529  STATE/COUNTY-  MD/ST MARYS
 HV6529  COUNTRY     -  US
 HV6529  USGS QUAD   -  POINT LOOKOUT (2016)
 HV6529
 HV6529                         *CURRENT SURVEY CONTROL
 HV6529  ______________________________________________________________________
 HV6529* NAD 83(1993) POSITION- 38 03 36.52536(N) 076 21 43.02402(W)   ADJUSTED
 HV6529* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6529  ______________________________________________________________________
 HV6529  GEOID HEIGHT    -        -35.169 (meters)                     GEOID18
 HV6529  LAPLACE CORR    -         -6.25  (seconds)                    DEFLEC18
 HV6529  HORZ ORDER      -  THIRD
 HV6529
 HV6529.The horizontal coordinates were established by classical geodetic methods
 HV6529.and adjusted by the National Geodetic Survey in November 1994.
 HV6529
 HV6529.The orthometric height was scaled from a topographic map.
 HV6529
 HV6529.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6529.GEOID18 height accuracy estimate available here.
 HV6529
 HV6529.Click photographs - Photos may exist for this station.
 HV6529
 HV6529.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6529
 HV6529. The following values were computed from the NAD 83(1993) position.
 HV6529
 HV6529;                    North         East     Units Scale Factor Converg.
 HV6529;SPC MD       -    43,874.144   455,997.967   MT  1.00005038   +0 24 01.7
 HV6529;SPC MD       -   143,943.75  1,496,053.33   sFT  1.00005038   +0 24 01.7
 HV6529;SPC VA N     - 2,045,860.260 3,687,618.788   MT  0.99999538   +1 20 03.8
 HV6529;SPC VA N     - 6,712,126.54 12,098,462.64   sFT  0.99999538   +1 20 03.8
 HV6529;SPC VA S     - 1,193,766.339 3,687,624.028   MT  1.00001840   +1 17 51.5
 HV6529;SPC VA S     - 3,916,548.40 12,098,479.83   sFT  1.00001840   +1 17 51.5
 HV6529;UTM  18      - 4,213,363.914   380,519.331   MT  0.99977582   -0 50 23.0
 HV6529
 HV6529!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6529!SPC MD       -   1.00000556  x   1.00005038  =   1.00005594
 HV6529!SPC VA N     -   1.00000556  x   0.99999538  =   1.00000094
 HV6529!SPC VA S     -   1.00000556  x   1.00001840  =   1.00002396
 HV6529!UTM  18      -   1.00000556  x   0.99977582  =   0.99978138
 HV6529
 HV6529:                Primary Azimuth Mark                     Grid Az
 HV6529:SPC MD       -  LYNCH POINT 3                            265 01 40.6
 HV6529:SPC VA N     -  LYNCH POINT 3                            264 05 38.5
 HV6529:SPC VA S     -  LYNCH POINT 3                            264 07 50.8
 HV6529:UTM  18      -  LYNCH POINT 3                            266 16 05.3
 HV6529
 HV6529_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8051913363(NAD 83)
 HV6529
 HV6529|---------------------------------------------------------------------|
 HV6529| PID    Reference Object                     Distance      Geod. Az  |
 HV6529|                                                           dddmmss.s |
 HV6529| CX2839 HALL RM                              17.820 METERS 04601     |
 HV6529| HV6883 LYNCH POINT 3                       APPROX.14.1 KM 2652542.3 |
 HV6529|---------------------------------------------------------------------|
 HV6529
 HV6529                          SUPERSEDED SURVEY CONTROL
 HV6529
 HV6529  NAD 83(1991)-  38 03 36.52412(N)    076 21 43.02661(W) AD(       ) 3
 HV6529  NAD 83(1986)-  38 03 36.52609(N)    076 21 43.04094(W) AD(       ) 3
 HV6529  NAD 27      -  38 03 36.06100(N)    076 21 44.23200(W) AD(       ) 3
 HV6529  USSD        -  38 03 36.43800(N)    076 21 43.95100(W) AD(       ) 3
 HV6529
 HV6529.Superseded values are not recommended for survey control.
 HV6529
 HV6529.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6529.See file dsdata.pdf to determine how the superseded data were derived.
 HV6529
 HV6529
 HV6529  HISTORY     - Date     Condition        Report By
 HV6529  HISTORY     - 1901     MONUMENTED       CGS
 HV6529  HISTORY     - 1908     SEE DESCRIPTION  CGS
 HV6529  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6529
 HV6529                          STATION DESCRIPTION
 HV6529
 HV6529'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV6529'STATION IS ON THE NORTHERN SHORE OF POTOMAC RIVER, ABOUT 5/8
 HV6529'MILE NW OF CORNFIELD POINT, AND 2-3/4 MILES NW OF POINT
 HV6529'LOOKOUT, ON THE ESTATE OF JAMES HALL, JUST E OF HIS GARDEN, AND
 HV6529'NEAR THE WESTERN EXTREMITY OF A LARGE PASTURE.  IT IS 5 FEET
 HV6529'ABOVE HIGH WATER, 7 YARDS (IN 1908) E OF EDGE OF BANK, 6 YARDS
 HV6529'SSE OF A PALING FENCE, AND 150 YARDS S OF A LARGE HOUSE WITH
 HV6529'2-STORY PORCH.
 HV6529'
 HV6529'STATION MARK IS A 4-INCH DRAIN TILE, 3 FEET LONG, LARGE END UP,
 HV6529'TOP FLUSH WITH GROUND, AND SURROUNDED WITH CEMENT.
 HV6529'
 HV6529'REFERENCE MARK NO.1 IS A HOLE IN THE CENTER OF THE TOP OF A
 HV6529'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6529'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6529'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6529'TOP OF POST.  IT IS 17.82 METERS (58.5 FEET) FROM STATION
 HV6529'N 46 DEG 01 MIN E.
 HV6529'
 HV6529'REFERENCE MARK NO.2 IS TILE PIPE SET WITH TOP FLUSH WITH
 HV6529'GROUND AND EMBEDDED IN CEMENT.  IT IS 23.24 METERS (76.2 FEET)
 HV6529'FROM THE STATION N 47 DEG 56 MIN E.
 HV6529'
 HV6529'OTHER DISTANCES AND AZIMUTHS ARE AS FOLLOWS--CHIMNEY OF
 HV6529'GRAIN HOUSE, 70 YARDS, N 50 DEG 02 MIN E.  NEAR PEAK OF ROOF OF
 HV6529'HALL HOUSE, 150 YARDS N 04 DEG 29 MIN E.
 HV6529
 HV6529                          STATION RECOVERY (1942)
 HV6529
 HV6529'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6529'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL
 HV6529'DESCRIPTION--
 HV6529'
 HV6529'(1) DELETE ON THE ESTATE OF JAMES HALL SINCE IT IS NOW
 HV6529'OWNED BY CARL BREUER.
 HV6529'
 HV6529'(2) DELETE E OF A GARDEN SINCE THE GARDEN NO LONGER EXISTS.
 HV6529'
 HV6529'(3) DELETE NEAR THE WESTERN EXTREMITY OF A LARGE PASTURE
 HV6529'SINCE IT IS NOW IN A LAWN.
 HV6529'
 HV6529'(4) DELETE 150 YARDS S OF A LARGE HOUSE WITH A 2-STORY PORCH
 HV6529'SINCE THIS HOUSE NO LONGER EXISTS.
 HV6529'
 HV6529'THE STATION WAS FOUND DESTROYED BUT THE REFERENCE MARKS WERE
 HV6529'IN GOOD CONDITION.  REFERENCE MARK NO.1 IS LOCATED ABOUT 3
 HV6529'MILES, BY ROAD, SW OF SCOTLAND POST OFFICE ON THE PROPERTY OF
 HV6529'CARL BREUER AND KNOWN AS CORNFIELD HARBOR FARM, ON THE
 HV6529'NORTHERN SHORE OF THE POTOMAC RIVER, ABOUT 5/8 MILE NW OF
 HV6529'CORNFIELD POINT AND ABOUT 2-3/4 MILES NW OF POINT LOOKOUT, 102
 HV6529'FEET W OF THE NW CORNER OF A 2-STORY WHITE HOUSE, 6.6 FEET
 HV6529'S OF A 5-INCH CHERRY TREE, 6.2 FEET SE OF A 6-INCH CHERRY
 HV6529'TREE, AT THE N EDGE OF A LAWN AND 7 FEET FROM THE EDGE OF
 HV6529'A 5-FOOT BANK.
 HV6529'
 HV6529'THE STATION IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6529'SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS A 10-INCH SQUARE
 HV6529'CONCRETE MONUMENT, WHICH PROJECTS 4 INCHES ABOVE THE SURFACE OF
 HV6529'THE GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK
 HV6529'IN THE TOP OF THE MONUMENT.  THE MARK IS IN GOOD CONDITION.
 HV6529'
 HV6529'REFERENCE MARK NO.2 IS LOCATED 18 FEET NE OF REFERENCE MARK
 HV6529'NO.1, ON THE N EDGE OF THE LAWN, 13 FEET E OF A 6-INCH CHERRY
 HV6529'TREE AND 86 FEET W OF THE NW CORNER OF THE HOUSE.  THE MARK IS
 HV6529'A 4-INCH TILE PIPE FILLED WITH CONCRETE WHICH PROJECTS 2 INCHES
 HV6529'ABOVE THE SURFACE OF THE GROUND.  THE MARK IS IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7755 ***********************************************************************
 HV7755  DESIGNATION -  HALL
 HV7755  PID         -  HV7755
 HV7755  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7755  COUNTRY     -  US
 HV7755  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7755
 HV7755                         *CURRENT SURVEY CONTROL
 HV7755  ______________________________________________________________________
 HV7755* NAD 83(1993) POSITION- 38 55 46.91257(N) 076 55 25.23771(W)   ADJUSTED
 HV7755* NAVD 88 ORTHO HEIGHT -    99.3   (meters)      326.    (feet) VERTCON3
 HV7755  ______________________________________________________________________
 HV7755  GEOID HEIGHT    -        -32.241 (meters)                     GEOID18
 HV7755  LAPLACE CORR    -         -4.70  (seconds)                    DEFLEC18
 HV7755  HORZ ORDER      -  FIRST
 HV7755
 HV7755.The horizontal coordinates were established by classical geodetic methods
 HV7755.and adjusted by the National Geodetic Survey in November 1994.
 HV7755
 HV7755.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7755.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7755
 HV7755.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7755.GEOID18 height accuracy estimate available here.
 HV7755
 HV7755.Click photographs - Photos may exist for this station.
 HV7755
 HV7755.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7755
 HV7755. The following values were computed from the NAD 83(1993) position.
 HV7755
 HV7755;                    North         East     Units Scale Factor Converg.
 HV7755;SPC MD       -   140,204.786   406,617.783   MT  0.99995029   +0 02 52.5
 HV7755;SPC MD       -   459,988.54  1,334,045.18   sFT  0.99995029   +0 02 52.5
 HV7755;UTM  18      - 4,310,734.430   333,254.049   MT  0.99994238   -1 12 32.6
 HV7755
 HV7755!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7755!SPC MD       -   0.99998948  x   0.99995029  =   0.99993977
 HV7755!UTM  18      -   0.99998948  x   0.99994238  =   0.99993186
 HV7755
 HV7755:                Primary Azimuth Mark                     Grid Az
 HV7755:SPC MD       -  ROGERS HEIGHTS STANDPIPE                 012 43 32.6
 HV7755:UTM  18      -  ROGERS HEIGHTS STANDPIPE                 013 58 57.7
 HV7755
 HV7755_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3325410734(NAD 83)
 HV7755
 HV7755|---------------------------------------------------------------------|
 HV7755| PID    Reference Object                     Distance      Geod. Az  |
 HV7755|                                                           dddmmss.s |
 HV7755| HV7753 ROGERS HEIGHTS STANDPIPE            APPROX. 1.7 KM 0124625.1 |
 HV7755| HV7759 RIVERDALE FIRST BAP CH SPIRE        APPROX. 3.7 KM 0164704.4 |
 HV7755| HV7743 HYATTSVILLE FIRST BAP CH SPIRE      APPROX. 3.6 KM 3270757.3 |
 HV7755| HV7741 BLADENSBURG CENTRAL BAP CH          APPROX. 1.0 KM 3510913.8 |
 HV7755|---------------------------------------------------------------------|
 HV7755
 HV7755                          SUPERSEDED SURVEY CONTROL
 HV7755
 HV7755  NAD 83(1991)-  38 55 46.91226(N)    076 55 25.23797(W) AD(       ) 1
 HV7755  NAD 83(1986)-  38 55 46.91109(N)    076 55 25.24950(W) AD(       ) 1
 HV7755  NAD 27      -  38 55 46.51065(N)    076 55 26.34273(W) AD(       ) 1
 HV7755  NGVD 29 (07/19/86)   99.5    (m)          326.     (f) VERT ANG       
 HV7755
 HV7755.Superseded values are not recommended for survey control.
 HV7755
 HV7755.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7755.See file dsdata.pdf to determine how the superseded data were derived.
 HV7755
 HV7755_MARKER: DS = TRIANGULATION STATION DISK
 HV7755_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV7755_SP_SET: ELEVATOR SHAFT ROOF
 HV7755_STAMPING: HALL 1970
 HV7755_MARK LOGO: CGS
 HV7755_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7755
 HV7755  HISTORY     - Date     Condition        Report By
 HV7755  HISTORY     - 1970     MONUMENTED       NGS
 HV7755
 HV7755                          STATION DESCRIPTION
 HV7755
 HV7755'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7755'THE STATION IS ABOUT 1-1/4 MILES NORTHEAST OF THE MARYLAND-DISTRICT
 HV7755'OF COLUMBIA BOUNDARY LINE, 3/4 MILE WEST OF CHEVERLY, 3/10 MILE
 HV7755'SOUTHWEST OF THE PRINCE GEORGES COUNTY HOSPITAL, AND ON THE TOP
 HV7755'OF THE ELEVATOR SHAFT OF THE RESIDENCE HALL OF THE
 HV7755'HOSPITAL.  PERMISSION WAS GRANTED BY R.H. HAGAMAN, ASSISTANT
 HV7755'ADMINISTRATOR OF THE PRINCE GEORGES COUNTY HOSPITAL.
 HV7755'
 HV7755'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 50
 HV7755'AND STATE HIGHWAY 202 IN CHEVERLY, GO WESTERLY ON STATE HIGHWAY
 HV7755'202 FOR 1.1 MILES TO A SIDE ROAD LEFT, 100 YARDS BEFORE REACHING
 HV7755'THE BALTIMORE-WASHINGTON PARKWAY.  TURN LEFT AND GO SOUTHWEST
 HV7755'THEN SOUTH ON THE ACCESS ROAD TO THE PRINCE GEORGES COUNTY
 HV7755'HOSPITAL, FOR 0.3 MILE TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT,
 HV7755'AND GO WEST FOR 0.3 MILE TO THE RESIDENT HALL OF THE HOSPITAL
 HV7755'AND THE STATION ON THE ROOF OF THE ELEVATOR SHAFT.
 HV7755'
 HV7755'THE STATION MARK IS A STANDARD DISK, STAMPED HALL 1970, FIXED
 HV7755'TO THE ROOF WITH ROOFING COMPOUND, UNDER A 6-INCH COPPER CAP THAT
 HV7755'PROJECTS 6 INCHES ABOVE THE ROOF.  IT IS 10.2 FEET EAST OF THE
 HV7755'WEST CORNER OF THE ELEVATOR SHAFT, 9.0 FEET NORTH OF THE SOUTH
 HV7755'CORNER, 9.0 FEET WEST OF THE EAST CORNER OF THE SHAFT, AND 7.9
 HV7755'FEET SOUTH OF THE NORTH CORNER OF THE SHAFT.
 HV7755'
 HV7755'DUE TO THE SMALL SIZE OF THE ROOF OF THE ELEVATOR SHAFT NO
 HV7755'REFERENCE MARKS COULD BE SET.  ALL CORNERS OF THE ROOF WERE TOO
 HV7755'CLOSE TO FOCUS THE INSTRUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9765 ***********************************************************************
 DR9765  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9765  DESIGNATION -  HALL
 DR9765  PID         -  DR9765
 DR9765  STATE/COUNTY-  MD/SOMERSET
 DR9765  COUNTRY     -  US
 DR9765  USGS QUAD   -  PRINCESS ANNE (2016)
 DR9765
 DR9765                         *CURRENT SURVEY CONTROL
 DR9765  ______________________________________________________________________
 DR9765* NAD 83(2011) POSITION- 38 11 21.32972(N) 075 43 56.49866(W)   ADJUSTED
 DR9765* NAD 83(2011) ELLIP HT-   -32.910 (meters)        (01/22/24)   ADJUSTED
 DR9765* NAD 83(2011) EPOCH   -  2010.00
 DR9765* NAVD 88 ORTHO HEIGHT -     3.08  (meters)       10.1   (feet) GPS OBS
 DR9765  ______________________________________________________________________
 DR9765  GEOID HEIGHT    -        -35.984 (meters)                     GEOID18
 DR9765  NAD 83(2011) X  -  1,237,050.052 (meters)                     COMP
 DR9765  NAD 83(2011) Y  - -4,864,618.431 (meters)                     COMP
 DR9765  NAD 83(2011) Z  -  3,921,956.239 (meters)                     COMP
 DR9765  LAPLACE CORR    -         -1.71  (seconds)                    DEFLEC18
 DR9765
 DR9765  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9765  Standards:
 DR9765         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9765            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9765  -------------------------------------------------------------------
 DR9765  NETWORK    0.39   1.06           0.17   0.15   0.54      0.03642741
 DR9765  -------------------------------------------------------------------
 DR9765  Click here for local accuracies and other accuracy information.
 DR9765
 DR9765.The horizontal coordinates were established by GPS observations
 DR9765.and adjusted by the MD DOT HIGHWAY ADMIN in January 2024.
 DR9765
 DR9765.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9765.been affixed to the stable North American tectonic plate. See 
 DR9765.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9765
 DR9765.The horizontal coordinates are valid at the epoch date displayed above
 DR9765.which is a decimal equivalence of Year/Month/Day.
 DR9765
 DR9765.The orthometric height was determined by GPS observations and a
 DR9765.high-resolution geoid model using precise GPS observation and
 DR9765.processing techniques.
 DR9765
 DR9765.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9765.GEOID18 height accuracy estimate available here.
 DR9765
 DR9765.Click photographs - Photos may exist for this station.
 DR9765
 DR9765.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9765
 DR9765.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9765
 DR9765.The ellipsoidal height was determined by GPS observations
 DR9765.and is referenced to NAD 83.
 DR9765
 DR9765. The following values were computed from the NAD 83(2011) position.
 DR9765
 DR9765;                    North         East     Units Scale Factor Converg.
 DR9765;SPC MD       -    58,781.322   511,051.902   MT  1.00002111   +0 47 44.2
 DR9765;SPC MD       -   192,851.72  1,676,676.12   sFT  1.00002111   +0 47 44.2
 DR9765;UTM  18      - 4,227,067.379   435,865.867   MT  0.99965066   -0 27 10.1
 DR9765
 DR9765!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9765!SPC MD       -   1.00000516  x   1.00002111  =   1.00002627
 DR9765!UTM  18      -   1.00000516  x   0.99965066  =   0.99965582
 DR9765
 DR9765_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3586527067(NAD 83)
 DR9765
 DR9765                          SUPERSEDED SURVEY CONTROL
 DR9765
 DR9765.No superseded survey control is available for this station.
 DR9765
 DR9765_MARKER: DD = SURVEY DISK
 DR9765_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9765_STAMPING: HALL 1971
 DR9765_MARK LOGO: MDBCSM
 DR9765_PROJECTION: FLUSH
 DR9765_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9765+STABILITY: SURFACE MOTION
 DR9765_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9765+SATELLITE: SATELLITE OBSERVATIONS - February 26, 2020
 DR9765
 DR9765  HISTORY     - Date     Condition        Report By
 DR9765  HISTORY     - 1971     MONUMENTED       MDBCSM
 DR9765  HISTORY     - 20200226 GOOD             MDSHA
 DR9765
 DR9765                          STATION DESCRIPTION
 DR9765
 DR9765'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (EBD)
 DR9765'THE MARK IS LOCATED ABOUT 4.8 MI (7.7 KM) EAST OF MONIE, 4.7 MI (7.6
 DR9765'KM) NORTH-NORTHWEST OF WESTOVER AND 2.4 MI (3.8 KM) WEST-SOUTHWEST OF
 DR9765'PRINCESS ANNE.
 DR9765'
 DR9765'TO REACH THE MARK FROM THE INTERSECTION OF US 13 AND MD 363/DEAL
 DR9765'ISLAND ROAD, GO WEST ON MD 363 FOR 2.19 MI (3.52 KM) TO THE MARK ON
 DR9765'THE LEFT.
 DR9765'
 DR9765'THE MARK IS 67.2 FT (20.5 M) WEST-SOUTHWEST OF ESPS POLE NUMBER T 56,
 DR9765'30.9 FT (9.4 M) EAST-NORTHEAST OF THE EAST END OF A 36-INCH (91 CM)
 DR9765'CORRUGATED METAL PIPE, 27.2 FT (8.3 M) NORTHWEST OF THE WEST END OF A
 DR9765'36-INCH (91 CM) CORRUGATED METAL PIPE, 10.3 FT (3.1 M) SOUTHEAST OF
 DR9765'THE SOUTHWEST CORNER OF A BLOCK WALL, 8.3 FT (2.5 M) SOUTHWEST OF THE
 DR9765'SOUTHEAST CORNER OF A BLOCK WALL,154.5 FT (47.1 M) SOUTH OF THE
 DR9765'CENTERLINE OF DEAL ISLAND ROAD, 43.9 FT (13.4 M) EAST OF THE
 DR9765'CENTERLINE OF A GRAVEL DRIVEWAY OF 29423 DEAL ISLAND ROAD, 26.6 FT
 DR9765'(8.1 M) WEST OF THE CENTERLINE OF A GRAVEL DRIVEWAY OF 29427 DEAL
 DR9765'ISLAND ROAD AND SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6530 ***********************************************************************
 HV6530  DESIGNATION -  HALL 2
 HV6530  PID         -  HV6530
 HV6530  STATE/COUNTY-  MD/ST MARYS
 HV6530  COUNTRY     -  US
 HV6530  USGS QUAD   -  POINT LOOKOUT (2016)
 HV6530
 HV6530                         *CURRENT SURVEY CONTROL
 HV6530  ______________________________________________________________________
 HV6530* NAD 83(1993) POSITION- 38 03 36.67801(N) 076 21 42.79248(W)   ADJUSTED
 HV6530* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6530  ______________________________________________________________________
 HV6530  GEOID HEIGHT    -        -35.170 (meters)                     GEOID18
 HV6530  LAPLACE CORR    -         -6.25  (seconds)                    DEFLEC18
 HV6530  HORZ ORDER      -  SECOND
 HV6530
 HV6530.The horizontal coordinates were established by classical geodetic methods
 HV6530.and adjusted by the National Geodetic Survey in November 1994.
 HV6530
 HV6530.The orthometric height was scaled from a topographic map.
 HV6530
 HV6530.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6530.GEOID18 height accuracy estimate available here.
 HV6530
 HV6530.Click photographs - Photos may exist for this station.
 HV6530
 HV6530.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6530
 HV6530. The following values were computed from the NAD 83(1993) position.
 HV6530
 HV6530;                    North         East     Units Scale Factor Converg.
 HV6530;SPC MD       -    43,878.890   456,003.579   MT  1.00005037   +0 24 01.8
 HV6530;SPC MD       -   143,959.32  1,496,071.74   sFT  1.00005037   +0 24 01.8
 HV6530;SPC VA S     - 1,193,771.173 3,687,629.565   MT  1.00001841   +1 17 51.6
 HV6530;SPC VA S     - 3,916,564.26 12,098,498.00   sFT  1.00001841   +1 17 51.6
 HV6530;UTM  18      - 4,213,368.536   380,525.042   MT  0.99977580   -0 50 22.9
 HV6530
 HV6530!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6530!SPC MD       -   1.00000556  x   1.00005037  =   1.00005593
 HV6530!SPC VA S     -   1.00000556  x   1.00001841  =   1.00002397
 HV6530!UTM  18      -   1.00000556  x   0.99977580  =   0.99978136
 HV6530
 HV6530:                Primary Azimuth Mark                     Grid Az
 HV6530:SPC MD       -  POINT LOOKOUT LIGHTHOUSE 1846            123 46 57.5
 HV6530:SPC VA S     -  POINT LOOKOUT LIGHTHOUSE 1846            122 53 07.7
 HV6530:UTM  18      -  POINT LOOKOUT LIGHTHOUSE 1846            125 01 22.2
 HV6530
 HV6530_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8052513368(NAD 83)
 HV6530
 HV6530|---------------------------------------------------------------------|
 HV6530| PID    Reference Object                     Distance      Geod. Az  |
 HV6530|                                                           dddmmss.s |
 HV6530| CX2840 HALL 2 RM 1                          10.687 METERS 04442     |
 HV6530| CX2841 HALL 2 RM 2                          16.037 METERS 04753     |
 HV6530| HV6525 POINT LOOKOUT LIGHTHOUSE 1846       APPROX. 4.2 KM 1241059.3 |
 HV6530|---------------------------------------------------------------------|
 HV6530
 HV6530                          SUPERSEDED SURVEY CONTROL
 HV6530
 HV6530  NAD 83(1991)-  38 03 36.67679(N)    076 21 42.79499(W) AD(       ) 2
 HV6530  NAD 83(1986)-  38 03 36.67878(N)    076 21 42.80940(W) AD(       ) 2
 HV6530  NAD 27      -  38 03 36.22100(N)    076 21 43.99900(W) AD(       ) 2
 HV6530  USSD        -  38 03 36.58800(N)    076 21 43.73300(W) AD(       ) 3
 HV6530
 HV6530.Superseded values are not recommended for survey control.
 HV6530
 HV6530.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6530.See file dsdata.pdf to determine how the superseded data were derived.
 HV6530
 HV6530_MARKER: DS = TRIANGULATION STATION DISK
 HV6530_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6530_STAMPING: HALL 2 1919
 HV6530_MARK LOGO: CGS
 HV6530_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6530
 HV6530  HISTORY     - Date     Condition        Report By
 HV6530  HISTORY     - 1919     MONUMENTED       CGS
 HV6530  HISTORY     - 1929     MARK NOT FOUND   CGS
 HV6530  HISTORY     - 1952     MARK NOT FOUND   CGS
 HV6530  HISTORY     - 1955     MARK NOT FOUND   CGS
 HV6530  HISTORY     - 1956     MARK NOT FOUND   CGS
 HV6530
 HV6530                          STATION DESCRIPTION
 HV6530
 HV6530'DESCRIBED BY COAST AND GEODETIC SURVEY 1919 (PMT)
 HV6530'STATION IS ON THE BANK OF THE POTOMAC RIVER, 1/2 MILE NW OF
 HV6530'CORNFIELD POINT, AND 150 METERS S OF JAMES HALLS HOUSE.  IT IS
 HV6530'ABOUT 7 METERS FROM THE POSITION OF THE STATION OF 1901-1908,
 HV6530'5.5 METERS FROM THE EDGE OF A CAVING BANK 4 FEET HIGH, 7 METERS
 HV6530'FROM HIGH-WATER LINE, 3.6 METERS S OF GARDEN FENCE AND IN THE
 HV6530'CORNER OF A CULTIVATED FIELD, BUT NOT LIKELY TO BE DISTURBED BY
 HV6530'CULTIVATION.  THE STATION MARK IS A BRONZE TABLET (STAMPED HALL
 HV6530'2, 1919) SET IN CONCRETE IN A TILE PIPE SURROUNDED WITH
 HV6530'CONCRETE, NOTE 6B.  THE REFERENCE MARKS OF 1901 AND 1908 WERE
 HV6530'FOUND UNDISTURBED.  THEY ARE 1 METER S OF THE GARDEN
 HV6530'FENCE AND 15 AND 21 METERS, RESPECTIVELY, FROM THE EDGE OF THE
 HV6530'BANK.  REFERENCE MARK NO.1 IS THE STANDARD MONUMENT OF THE
 HV6530'MARYLAND SHELL FISH SURVEY.  MADE OF CONCRETE 2 FEET LONG
 HV6530'AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  THE TOP SHOWS A
 HV6530'CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE COUNTER-SUNK
 HV6530'LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE LETTERS
 HV6530'U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE CENTER HOLE
 HV6530'IS AT THE CENTER OF THE MONUMENT, AND IF THE MARKING HAS BEEN
 HV6530'BROKEN OFF WITHOUT DISTURBING THE BOTTOM, THE CENTER OF THE
 HV6530'SQUARE SECTION MAY BE USED AS THE LOCATION OF THE STATION.
 HV6530'THE MONUMENT IS SET VERTICALLY IN THE GROUND, WITH TOP
 HV6530'PROJECTING ABOUT 3 TO 5 INCHES ABOVE THE SURFACE, AND IS
 HV6530'10.65 METERS (34.9 FEET) FROM STATION N 44 DEG 42 MIN E
 HV6530'REFERENCE MARK NO.2, A TILE EMBEDDED IN CEMENT WITH NAIL IN
 HV6530'TOP, IS 16.09 METERS (52.8 FEET) FROM STATION N 47 DEG 53 MIN E.
 HV6530
 HV6530                          STATION RECOVERY (1929)
 HV6530
 HV6530'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (JS)
 HV6530'HALL 2 IS LOST.  THE BANK HAS CAVED IN CARRYING AWAY THE STATION
 HV6530'MARK AND SUB-SURFACE MARK.  THE STATION MARK STILL IN THE
 HV6530'CONCRETE BLOCK WAS FOUND LYING ON THE BEACH.
 HV6530'
 HV6530'REFERENCE MARKS NO.1 AND 2 WERE RECOVERED.
 HV6530'
 HV6530'STATION LOST.
 HV6530
 HV6530                          STATION RECOVERY (1952)
 HV6530
 HV6530'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (EHK)
 HV6530'STATION HAS PREVIOUSLY BEEN CLASSIFIED AS LOST.
 HV6530'
 HV6530'REFERENCE MARKS 1 AND 2 WERE THOROUGHLY SEARCHED FOR BY THREE
 HV6530'MEN FOR ONE AND ONE HALF HOURS.  THE REMAINS OF ONE WAS FOUND
 HV6530'AWASH ON THE BEACH AND IT IS BELIEVED THAT THE OTHER HAS ALSO
 HV6530'BEEN WASHED AWAY.  IT IS RECOMMENDED THAT THE REFERENCE MARKS BE
 HV6530'CLASSIFIED AS LOST.
 HV6530
 HV6530                          STATION RECOVERY (1955)
 HV6530
 HV6530'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (KSU)
 HV6530'STATION DESTROYED AS REPORTED IN THE RECOVERY NOTE OF 1929.  A
 HV6530'SEARCH OF THE AREA FAILED TO LOCATE EITHER REFERENCE MARK.  LOCAL
 HV6530'INFORMATION INDICATES THEY HAVE BEEN DESTROYED BY EROSION.
 HV6530
 HV6530                          STATION RECOVERY (1956)
 HV6530
 HV6530'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (LWS)
 HV6530'THE SHORE HAS ERODED TO WITHIN 62 FT. W OF THE NW CORNER OF A
 HV6530'TWO-STORY WHITE HOUSE, AND AS A RESULT OF THIS EROSION, REFERENCE
 HV6530'MARKS 1 AND 2 HAVE BEEN DESTROYED.  AS PREVIOUSLY NOTED BY
 HV6530'J.S. IN 1929, THE STATION ITSELF HAS BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7338 ***********************************************************************
 HV7338  DESIGNATION -  HALLOWING
 HV7338  PID         -  HV7338
 HV7338  STATE/COUNTY-  MD/CALVERT
 HV7338  COUNTRY     -  US
 HV7338  USGS QUAD   -  BENEDICT (2016)
 HV7338
 HV7338                         *CURRENT SURVEY CONTROL
 HV7338  ______________________________________________________________________
 HV7338* NAD 83(1993) POSITION- 38 30 32.43234(N) 076 39 55.14230(W)   ADJUSTED
 HV7338* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7338  ______________________________________________________________________
 HV7338  GEOID HEIGHT    -        -33.716 (meters)                     GEOID18
 HV7338  LAPLACE CORR    -         -3.78  (seconds)                    DEFLEC18
 HV7338  HORZ ORDER      -  SECOND
 HV7338
 HV7338.The horizontal coordinates were established by classical geodetic methods
 HV7338.and adjusted by the National Geodetic Survey in November 1994.
 HV7338
 HV7338.The orthometric height was scaled from a topographic map.
 HV7338
 HV7338.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7338.GEOID18 height accuracy estimate available here.
 HV7338
 HV7338.Click photographs - Photos may exist for this station.
 HV7338
 HV7338.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7338
 HV7338. The following values were computed from the NAD 83(1993) position.
 HV7338
 HV7338;                    North         East     Units Scale Factor Converg.
 HV7338;SPC MD       -    93,556.857   429,190.726   MT  0.99997022   +0 12 36.2
 HV7338;SPC MD       -   306,944.46  1,408,103.24   sFT  0.99997022   +0 12 36.2
 HV7338;UTM  18      - 4,263,607.126   354,801.320   MT  0.99985963   -1 02 13.5
 HV7338
 HV7338!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7338!SPC MD       -   1.00000517  x   0.99997022  =   0.99997539
 HV7338!UTM  18      -   1.00000517  x   0.99985963  =   0.99986480
 HV7338
 HV7338:                Primary Azimuth Mark                     Grid Az
 HV7338:SPC MD       -  BUENA 2                                  026 56 22.2
 HV7338:UTM  18      -  BUENA 2                                  028 11 11.9
 HV7338
 HV7338_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5480163607(NAD 83)
 HV7338
 HV7338|---------------------------------------------------------------------|
 HV7338| PID    Reference Object                     Distance      Geod. Az  |
 HV7338|                                                           dddmmss.s |
 HV7338| CX2843 HALLOWING RM 1                       12.657 METERS 02116     |
 HV7338| HV7339 BUENA 2                             APPROX. 2.4 KM 0270858.4 |
 HV7338| CX2844 HALLOWING RM 2                       12.674 METERS 09527     |
 HV7338|---------------------------------------------------------------------|
 HV7338
 HV7338                          SUPERSEDED SURVEY CONTROL
 HV7338
 HV7338  NAD 83(1991)-  38 30 32.43232(N)    076 39 55.14361(W) AD(       ) 2
 HV7338  NAD 83(1986)-  38 30 32.43136(N)    076 39 55.15772(W) AD(       ) 2
 HV7338  NAD 27      -  38 30 31.98600(N)    076 39 56.30400(W) AD(       ) 2
 HV7338  USSD        -  38 30 32.34600(N)    076 39 56.05300(W) AD(       ) 3
 HV7338
 HV7338.Superseded values are not recommended for survey control.
 HV7338
 HV7338.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7338.See file dsdata.pdf to determine how the superseded data were derived.
 HV7338
 HV7338_MARKER: H = DRILL HOLE
 HV7338_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7338
 HV7338  HISTORY     - Date     Condition        Report By
 HV7338  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7338  HISTORY     - 1930     GOOD             MDDNR
 HV7338  HISTORY     - 1942     GOOD             CGS
 HV7338  HISTORY     - 1943     GOOD             CGS
 HV7338  HISTORY     - 1945     GOOD             CGS
 HV7338  HISTORY     - 1960     GOOD             CGS
 HV7338
 HV7338                          STATION DESCRIPTION
 HV7338
 HV7338'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7338'STATION IS ON THE EASTERN SHORE OF PATUXENT RIVER, ON POINT
 HV7338'OPPOSITE BENEDICT KNOWN LOCALLY AS HOLLAND POINT, BUT GIVEN ON
 HV7338'CHARTS AS HALLOWING POINT, ON A ROUND, GRAVEL, AND GRASS POINT,
 HV7338'ABOUT 250 YARDS S OF WHARF ON HOLLAND POINT, ABOUT 2 FEET ABOVE
 HV7338'HIGH WATER, 10 YARDS N OF SHORE, 8 YARDS E OF SHORE, AND 15 YARDS
 HV7338'OUTSIDE OF A GROUP OF LOCUST TREES, SUGARBERRY TREES, AND BUSHES.
 HV7338'
 HV7338'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV7338'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV7338'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV7338'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV7338'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV7338'FOLLOWS--OUTSIDE CHIMNEY OF DETACHED HOUSE AT SOTHORONS 1-1/2
 HV7338'MILES, S 78 DEG 33 MIN W. CENTER OF ROOF ON SQUARE HOUSE, 3/4
 HV7338'MILE, S 82 DEG 54 MIN W. CANNING HOUSE STACK, 1/2 MILE, N 78 DEG 5
 HV7338'MIN W.  LEFT END OF PEAK OF ROOF OF WHARF HOUSE ON HOLLAND POINT,
 HV7338'250 YARDS, N 28 DEG 6 MIN W.  CHIMNEY OF STORE AT BUENA VISTA,
 HV7338'1-3/4 MILES, S 26 DEG 6 MIN W.  NAIL IN BLAZE IN NEAREST ONE OF
 HV7338'GROUP OF FOUR SUGARBERRY TREES (EACH 8 INCHES DIAMETER), 12.88
 HV7338'METERS (42.3 FEET), N 41 DEG 3 MIN E.  NAIL IN BLAZE IN 10-INCH
 HV7338'SUGARBERRY TREE, 15.74 METERS (51.6 FEET), N 58 DEG 38 MIN E.
 HV7338'NAIL IN BLAZE IN 4-INCH LOCUST TREE, 11.90 METERS (39.0 FEET), S
 HV7338'63 DEG 25 MIN E.  SMOKE PIPE ON TRENT HALL WHARF BUILDING, 2-1/4
 HV7338'MILES, S 3 DEG 46 MIN E.
 HV7338
 HV7338                          STATION RECOVERY (1930)
 HV7338
 HV7338'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV7338'STATION RECOVERED AND TRIPOD ERECTED.
 HV7338
 HV7338                          STATION RECOVERY (1942)
 HV7338
 HV7338'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV7338'STATION RECOVERED IN GOOD CONDITION.  THERE IS A 9-FOOT
 HV7338'HYDROGRAPHIC SIGNAL BUILT OVER SAME, EASILY SEEN FROM THE FERRY
 HV7338'WHARF AT EAST SIDE OF THE PATUXENT RIVER.
 HV7338'
 HV7338'STATION IS ON HALLOWING POINT, AND REACHED FROM HUGHESVILLE VIA
 HV7338'THE BENEDICT ROAD ABOUT 6 MILES TO BENEDICT, THENCE ACROSS FERRY
 HV7338'TO OPPOSITE SHORE, FROM END OF WHARF ABOUT .05 MILE TAKE ROAD TO
 HV7338'RIGHT, SOUTH, WHICH GOES PAST SOME COTTAGES AND BEND TO THE RIGHT
 HV7338'AND TO THE LAST COTTAGE AT THE POINT AND STATION SITE.
 HV7338
 HV7338                          STATION RECOVERY (1943)
 HV7338
 HV7338'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7338'HALLOWING (MSFC) IS ON THE EASTERN SHORE OF THE PATUXENT RIVER, ON
 HV7338'A POINT OPPOSITE BENEDICT KNOWN LOCALLY AS HOLLAND POINT, BUT
 HV7338'GIVEN ON CHARTS AS HALLOWING POINT, ON A ROUND, GRAVEL, GRASSY
 HV7338'POINT ABOUT 250 YARDS SOUTH OF THE WHARF ON HOLLAND POINT, ABOUT 2
 HV7338'FEET ABOVE HIGH WATER LINE, 4 YARDS NORTH OF HIGH WATER LINE.
 HV7338'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV7338'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV7338'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV7338'MDSFCAND USCS ARE COUNTER-SUNK IN TOP OF THE POST.  ON PROPERTY
 HV7338'OWNED BY SENATOR PARRAN.
 HV7338'
 HV7338'REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE AS DESCRIBED.
 HV7338'
 HV7338'REFERENCE MARK NO. 1 IS NORTH OF THE STATION, 10 FEET EAST OF THE
 HV7338'HIGHWATER LINE.  IT IS STAMPED HALLOWING NO. 1 1943 AND PROJECTS 2
 HV7338'INCHES ABOVE THE SURFACE.
 HV7338'
 HV7338'REFERENCE MARK NO. 2 IS EAST OF THE STATION, 1 FOOT WEST OF THE
 HV7338'SOUTHWEST CORNER OF A SMALL COTTAGE.  IT IS STAMPED HALLOWING NO.
 HV7338'2 1943 AND PROJECTS 4 INCHES ABOVE THE SURFACE.
 HV7338'
 HV7338'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT STATION CITY (MSFC).
 HV7338'
 HV7338'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT STATION PRINCE 2.
 HV7338'
 HV7338'A 4-FOOT STAND WILL SEE A 4-FOOT LIGHT AT STATION BUENA 2.
 HV7338'
 HV7338'HEIGHT OF LIGHT ABOVE STATION MARK 1.2 METERS.
 HV7338
 HV7338                          STATION RECOVERY (1945)
 HV7338
 HV7338'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945 (FLP)
 HV7338'THE STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED IN
 HV7338'GOOD CONDITION.  THE DISTANCES TO REFERENCE MARKS WERE MEASURED
 HV7338'AND CHECKED.  THE DESCRIPTION IS ADEQUATE AS GIVEN BY G.W.L. IN 1943.
 HV7338
 HV7338                          STATION RECOVERY (1960)
 HV7338
 HV7338'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV7338'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  STATION NOW PLOTS
 HV7338'IN THE WATER AND IS BELIEVED TO HAVE BEEN DESTROYED BY EROSION.
 HV7338'
 HV7338'THE AREA TO THE EAST OF THE STATION HAS BEEN FILLED AND GRADED.
 HV7338'THE OWNER OF THE PROPERTY STATED THAT THE REFERENCE MARKS ARE
 HV7338'COVERED ABOUT TWO FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4697 ***********************************************************************
 AB4697  DESIGNATION -  HALTER
 AB4697  PID         -  AB4697
 AB4697  STATE/COUNTY-  MD/CARROLL
 AB4697  COUNTRY     -  US
 AB4697  USGS QUAD   -  LITTLESTOWN (2019)
 AB4697
 AB4697                         *CURRENT SURVEY CONTROL
 AB4697  ______________________________________________________________________
 AB4697* NAD 83(2011) POSITION- 39 38 18.54852(N) 077 02 47.88448(W)   ADJUSTED
 AB4697* NAD 83(2011) ELLIP HT-   169.033 (meters)        (06/27/12)   ADJUSTED
 AB4697* NAD 83(2011) EPOCH   -  2010.00
 AB4697* NAVD 88 ORTHO HEIGHT -   201.6   (meters)      661.    (feet) GPS OBS
 AB4697  ______________________________________________________________________
 AB4697  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4697  GEOID HEIGHT    -        -32.569 (meters)                     GEOID99
 AB4697  GEOID HEIGHT    -        -32.562 (meters)                     GEOID18
 AB4697  NAD 83(2011) X  -  1,102,530.041 (meters)                     COMP
 AB4697  NAD 83(2011) Y  - -4,793,378.735 (meters)                     COMP
 AB4697  NAD 83(2011) Z  -  4,047,263.685 (meters)                     COMP
 AB4697  LAPLACE CORR    -          5.03  (seconds)                    DEFLEC18
 AB4697
 AB4697  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4697  Standards:
 AB4697         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4697            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4697  -------------------------------------------------------------------
 AB4697  NETWORK    0.96   4.14           0.43   0.34   2.11      0.12385580
 AB4697  -------------------------------------------------------------------
 AB4697  Click here for local accuracies and other accuracy information.
 AB4697
 AB4697.The horizontal coordinates were established by GPS observations
 AB4697.and adjusted by the National Geodetic Survey in June 2012.
 AB4697
 AB4697.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4697.been affixed to the stable North American tectonic plate. See 
 AB4697.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4697
 AB4697.The horizontal coordinates are valid at the epoch date displayed above
 AB4697.which is a decimal equivalence of Year/Month/Day.
 AB4697
 AB4697.The orthometric height was determined by GPS observations and a
 AB4697.high-resolution geoid model.
 AB4697
 AB4697.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4697.GEOID18 height accuracy estimate available here.
 AB4697
 AB4697.Click photographs - Photos may exist for this station.
 AB4697
 AB4697.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4697
 AB4697.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4697
 AB4697.The ellipsoidal height was determined by GPS observations
 AB4697.and is referenced to NAD 83.
 AB4697
 AB4697. The following values were computed from the NAD 83(2011) position.
 AB4697
 AB4697;                    North         East     Units Scale Factor Converg.
 AB4697;SPC MD       -   218,891.855   395,996.619   MT  1.00003841   -0 01 45.4
 AB4697;SPC MD       -   718,147.69  1,299,198.91   sFT  1.00003841   -0 01 45.4
 AB4697;UTM  18      - 4,389,635.425   324,375.067   MT  0.99997975   -1 18 21.5
 AB4697
 AB4697!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4697!SPC MD       -   0.99997348  x   1.00003841  =   1.00001189
 AB4697!UTM  18      -   0.99997348  x   0.99997975  =   0.99995323
 AB4697
 AB4697_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2437589635(NAD 83)
 AB4697
 AB4697                          SUPERSEDED SURVEY CONTROL
 AB4697
 AB4697  NAD 83(2007)-  39 38 18.54883(N)    077 02 47.88512(W) AD(2002.00) 0
 AB4697  ELLIP H (02/10/07)  169.049  (m)                       GP(2002.00)    
 AB4697  ELLIP H (08/30/02)  169.018  (m)                       GP(       ) 4 2
 AB4697  NAD 83(1991)-  39 38 18.54822(N)    077 02 47.88579(W) AD(       ) 1
 AB4697  ELLIP H (07/03/96)  168.958  (m)                       GP(       ) 1 1
 AB4697  NAVD 88 (07/03/96)  201.6    (m)  GEOID93  model used  GPS OBS        
 AB4697
 AB4697.Superseded values are not recommended for survey control.
 AB4697
 AB4697.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4697.See file dsdata.pdf to determine how the superseded data were derived.
 AB4697
 AB4697_MARKER: DD = SURVEY DISK
 AB4697_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4697_STAMPING: HALTER 1993
 AB4697_MARK LOGO: MD-013
 AB4697_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4697_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4697+STABILITY: SURFACE MOTION
 AB4697_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4697+SATELLITE: SATELLITE OBSERVATIONS - May 29, 2007
 AB4697
 AB4697  HISTORY     - Date     Condition        Report By
 AB4697  HISTORY     - 1993     MONUMENTED       MD-013
 AB4697  HISTORY     - 20070529 GOOD             GEOCAC
 AB4697
 AB4697                          STATION DESCRIPTION
 AB4697
 AB4697'DESCRIBED BY CARROLL COUNTY MARYLAND 1993
 AB4697'STATION IS LOCATED ABOUT 5 MI (8.0 KM) NORTHWEST OF WESTMINSTER AND
 AB4697'ABOUT 7 MI (11.3 KM) EAST OF TANEYTOWN. TO REACH STATION FROM THE FROM
 AB4697'THE PLEASANT VALLEY FIRE DEPARTMENT STATION NO.6 IN PLEASANT VALLEY GO
 AB4697'NORTHEAST ON PLEASANT VALLEY ROAD FOR 0.1 MI (0.2 KM) TO THE
 AB4697'INTERSECTION WITH HALTER ROAD. TURN LEFT AND GO NORTH ON HALTER ROAD
 AB4697'FOR 0.35 TO THE STATION ON THE RIGHT ON TOP OF A 12 FT (3.7 M) HIGH
 AB4697'BANK. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4697'MONUMENT SET FLUSH WITH THE GROUND. IT IS 23.0 FT (7.0 M) EAST OF THE
 AB4697'CENTERLINE OF THE ROAD AND 29.8 FT (9.1 M) SOUTH OF POWER POLE
 AB4697'NO.151202.
 AB4697
 AB4697                          STATION RECOVERY (2007)
 AB4697
 AB4697'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 AB4697'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5744 ***********************************************************************
 HV5744  DESIGNATION -  HAM
 HV5744  PID         -  HV5744
 HV5744  STATE/COUNTY-  MD/TALBOT
 HV5744  COUNTRY     -  US
 HV5744  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5744
 HV5744                         *CURRENT SURVEY CONTROL
 HV5744  ______________________________________________________________________
 HV5744* NAD 83(1991) POSITION- 38 45 59.91360(N) 076 09 42.48982(W)   ADJUSTED
 HV5744* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5744  ______________________________________________________________________
 HV5744  GEOID HEIGHT    -        -34.517 (meters)                     GEOID18
 HV5744  LAPLACE CORR    -         -4.11  (seconds)                    DEFLEC18
 HV5744  HORZ ORDER      -  THIRD
 HV5744
 HV5744.The horizontal coordinates were established by classical geodetic methods
 HV5744.and adjusted by the National Geodetic Survey in January 1992.
 HV5744
 HV5744.The orthometric height was scaled from a topographic map.
 HV5744
 HV5744.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5744.GEOID18 height accuracy estimate available here.
 HV5744
 HV5744.Click photographs - Photos may exist for this station.
 HV5744
 HV5744.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5744
 HV5744. The following values were computed from the NAD 83(1991) position.
 HV5744
 HV5744;                    North         East     Units Scale Factor Converg.
 HV5744;SPC MD       -   122,436.153   472,843.371   MT  0.99995165   +0 31 33.9
 HV5744;SPC MD       -   401,692.61  1,551,320.29   sFT  0.99995165   +0 31 33.9
 HV5744;UTM  18      - 4,291,521.995   399,066.338   MT  0.99972545   -0 43 39.1
 HV5744
 HV5744!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5744!SPC MD       -   1.00000514  x   0.99995165  =   0.99995679
 HV5744!UTM  18      -   1.00000514  x   0.99972545  =   0.99973059
 HV5744
 HV5744:                Primary Azimuth Mark                     Grid Az
 HV5744:SPC MD       -  COMB                                     209 20 25.2
 HV5744:UTM  18      -  COMB                                     210 35 38.2
 HV5744
 HV5744_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9906691521(NAD 83)
 HV5744
 HV5744|---------------------------------------------------------------------|
 HV5744| PID    Reference Object                     Distance      Geod. Az  |
 HV5744|                                                           dddmmss.s |
 HV5744| HV5739 COMB                                APPROX. 0.6 KM 2095159.1 |
 HV5744|---------------------------------------------------------------------|
 HV5744
 HV5744                          SUPERSEDED SURVEY CONTROL
 HV5744
 HV5744  NAD 83(1986)-  38 45 59.90929(N)    076 09 42.50388(W) AD(       ) 3
 HV5744  NAD 27      -  38 45 59.43200(N)    076 09 43.71200(W) AD(       ) 3
 HV5744  USSD        -  38 45 59.81200(N)    076 09 43.47800(W) AD(       ) 3
 HV5744
 HV5744.Superseded values are not recommended for survey control.
 HV5744
 HV5744.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5744.See file dsdata.pdf to determine how the superseded data were derived.
 HV5744
 HV5744_MARKER: H = DRILL HOLE
 HV5744_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5744_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5744
 HV5744  HISTORY     - Date     Condition        Report By
 HV5744  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5744  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5744
 HV5744                          STATION DESCRIPTION
 HV5744
 HV5744'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5744'STATION IS ON THE SOUTHEASTERN SHORE OF MILES RIVER, ABOUT 5/8
 HV5744'MILE ESE OF LONG POINT, 1/2 MILE SE OF ENTRANCE TO HUNTING CREEK,
 HV5744'AND 3/8 MILE NE OF ENTRANCE TO NEWCOMB CREEK, IN CULTIVATED LAND,
 HV5744'ABOUT 6 FEET ABOVE HIGH WATER, 12 YARDS SSE OF EDGE OF BANK, 20
 HV5744'YARDS WSW OF WOODEN FENCE AT ORCHARD, 65 YARDS NNW OF FENCE AT
 HV5744'ROAD, 70 YARDS WNW OF LARGE SQUARE HOUSE, AND 70 YARDS NW OF
 HV5744'CORNER OF FENCE.  STATION MARK IS A HOLE IN THE CENTER OF THE TOP
 HV5744'OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV5744'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV5744'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV5744'TOP OF POST.  SUB-SURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE,
 HV5744'BURIED WITH TOP 2 INCHES BELOW THE BASE OF THE MONUMENT. DISTANCES
 HV5744'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LARGE
 HV5744'LONE SYCAMORE TREE 1/4 MILE, S 29 DEG 9 MIN W. LEFT PEAK OF HOUSE,
 HV5744'1-3/8 MILES, S 62 DEG 9 MIN W. NEAR PEAK OF LARGE HOUSE, 1-3/4
 HV5744'MILES, N 88 DEG 0 MIN W.  NEAR PEAK OF HOUSE, 1-3/4 MILES, N 36
 HV5744'DEG 51 MIN W.  LEFT CORNER OF HOUSE, 5/8 MILE, N 4 DEG 8 MIN W.
 HV5744'FRONT PEAK OF LARGE COLONIAL HOUSE, 3/4 MILE, N 24 DEG 58 MIN E.
 HV5744'NAIL IN BLAZE IN FENCE POST, 17.32 METERS (56.8 FEET), N 37 DEG 25
 HV5744'MIN E.  NEAR CORNER OF LARGE HOUSE, 3 MILES, N 45 DEG 35 MIN E.
 HV5744'NAIL IN BLAZE IN 24-INCH CHERRY TREE, 21.67 METERS (71.1 FEET), N
 HV5744'80 DEG 46 MIN E.  LEFT CORNER OF HOUSE, 73 YARDS, S 79 DEG 21
 HV5744'MIN E.  NAIL IN BLAZE IN 24-INCH CHERRY TREE, 36.78 METERS (120.7
 HV5744'FEET), S 74 DEG 16 MIN E.  SPINDLE ON BARN CUPOLA, 5/8 MILE, S 24
 HV5744'DEG 17 MIN E.
 HV5744
 HV5744                          STATION RECOVERY (1940)
 HV5744
 HV5744'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5744'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  IT IS BELIEVED THE
 HV5744'MARK WAS WASHED OUT.
 HV5744'
 HV5744'REFERENCE TREES DESTROYED AS WAS OLD HOUSE DESCRIBED IN ORIGINAL
 HV5744'DESCRIPTION.
 HV5744'
 HV5744'SEXTANT ANGLES TAKEN FROM POINTS OF REFERENCE PLACE POSITION OF
 HV5744'STATION IN WATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6045 ***********************************************************************
 HV6045  DESIGNATION -  HAM
 HV6045  PID         -  HV6045
 HV6045  STATE/COUNTY-  MD/TALBOT
 HV6045  COUNTRY     -  US
 HV6045  USGS QUAD   -  OXFORD (2016)
 HV6045
 HV6045                         *CURRENT SURVEY CONTROL
 HV6045  ______________________________________________________________________
 HV6045* NAD 83(1991) POSITION- 38 44 57.19302(N) 076 13 52.31268(W)   ADJUSTED
 HV6045* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6045  ______________________________________________________________________
 HV6045  GEOID HEIGHT    -        -34.389 (meters)                     GEOID18
 HV6045  LAPLACE CORR    -         -4.87  (seconds)                    DEFLEC18
 HV6045  HORZ ORDER      -  THIRD
 HV6045
 HV6045.The horizontal coordinates were established by classical geodetic methods
 HV6045.and adjusted by the National Geodetic Survey in January 1992.
 HV6045
 HV6045.The orthometric height was scaled from a topographic map.
 HV6045
 HV6045.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6045.GEOID18 height accuracy estimate available here.
 HV6045
 HV6045.Click photographs - Photos may exist for this station.
 HV6045
 HV6045.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6045
 HV6045. The following values were computed from the NAD 83(1991) position.
 HV6045
 HV6045;                    North         East     Units Scale Factor Converg.
 HV6045;SPC MD       -   120,449.159   466,829.028   MT  0.99995228   +0 28 57.1
 HV6045;SPC MD       -   395,173.62  1,531,588.24   sFT  0.99995228   +0 28 57.1
 HV6045;UTM  18      - 4,289,667.443   393,011.294   MT  0.99974095   -0 46 14.5
 HV6045
 HV6045!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6045!SPC MD       -   1.00000543  x   0.99995228  =   0.99995771
 HV6045!UTM  18      -   1.00000543  x   0.99974095  =   0.99974638
 HV6045
 HV6045:                Primary Azimuth Mark                     Grid Az
 HV6045:SPC MD       -  LEAD                                     234 06 25.8
 HV6045:UTM  18      -  LEAD                                     235 21 37.4
 HV6045
 HV6045_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9301189667(NAD 83)
 HV6045
 HV6045|---------------------------------------------------------------------|
 HV6045| PID    Reference Object                     Distance      Geod. Az  |
 HV6045|                                                           dddmmss.s |
 HV6045| HV6070 LEAD                                APPROX. 2.6 KM 2343522.9 |
 HV6045|---------------------------------------------------------------------|
 HV6045
 HV6045                          SUPERSEDED SURVEY CONTROL
 HV6045
 HV6045  NAD 83(1986)-  38 44 57.18930(N)    076 13 52.32752(W) AD(       ) 3
 HV6045  NAD 27      -  38 44 56.76900(N)    076 13 53.52700(W) AD(       ) 3
 HV6045  USSD        -  38 44 57.16200(N)    076 13 53.34200(W) AD(       ) 3
 HV6045
 HV6045.Superseded values are not recommended for survey control.
 HV6045
 HV6045.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6045.See file dsdata.pdf to determine how the superseded data were derived.
 HV6045
 HV6045_MARKER: N = NAIL
 HV6045_SETTING: 33 = WOODEN OBJECT (DRIVEN IN A PILE, POLE, TREE OR STUMP)
 HV6045_SP_SET: CEDAR STUB
 HV6045_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6045
 HV6045  HISTORY     - Date     Condition        Report By
 HV6045  HISTORY     - 1900     MONUMENTED       CGS
 HV6045  HISTORY     - 1902     GOOD             CGS
 HV6045  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6045
 HV6045                          STATION DESCRIPTION
 HV6045
 HV6045'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 HV6045'NEAR THE SW POINT OF HAMBLETON ISLAND, 4 FEET BACK FROM EDGE OF
 HV6045'BLUFF, IN A CULTIVATED FIELD, IN LINE WITH A ROW OF OLD APPLE
 HV6045'TREES AND 98.2 FEET FROM THE END TREE.  STATION MARKED BY A CEDAR
 HV6045'STUB.
 HV6045
 HV6045                          STATION RECOVERY (1940)
 HV6045
 HV6045'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6045'STATION MARK SEARCHED FOR BUT NOT RECOVERED.  MAY HAVE BEEN PLOWED
 HV6045'OUT.  OLD APPLE TREES DESCRIBED HAVE BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6703 ***********************************************************************
 HV6703  DESIGNATION -  HAM
 HV6703  PID         -  HV6703
 HV6703  STATE/COUNTY-  MD/ST MARYS
 HV6703  COUNTRY     -  US
 HV6703  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6703
 HV6703                         *CURRENT SURVEY CONTROL
 HV6703  ______________________________________________________________________
 HV6703* NAD 83(1991) POSITION- 38 19 57.82800(N) 076 29 24.66517(W)   ADJUSTED
 HV6703* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6703  ______________________________________________________________________
 HV6703  GEOID HEIGHT    -        -34.288 (meters)                     GEOID18
 HV6703  LAPLACE CORR    -         -5.01  (seconds)                    DEFLEC18
 HV6703  HORZ ORDER      -  THIRD
 HV6703
 HV6703.The horizontal coordinates were established by classical geodetic methods
 HV6703.and adjusted by the National Geodetic Survey in January 1992.
 HV6703
 HV6703.The orthometric height was scaled from a topographic map.
 HV6703
 HV6703.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6703.GEOID18 height accuracy estimate available here.
 HV6703
 HV6703.Click photographs - Photos may exist for this station.
 HV6703
 HV6703.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6703
 HV6703. The following values were computed from the NAD 83(1991) position.
 HV6703
 HV6703;                    North         East     Units Scale Factor Converg.
 HV6703;SPC MD       -    74,060.423   444,574.774   MT  0.99999447   +0 19 11.9
 HV6703;SPC MD       -   242,979.90  1,458,575.74   sFT  0.99999447   +0 19 11.9
 HV6703;UTM  18      - 4,243,783.789   369,755.682   MT  0.99980891   -0 55 27.8
 HV6703
 HV6703!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6703!SPC MD       -   1.00000542  x   0.99999447  =   0.99999989
 HV6703!UTM  18      -   1.00000542  x   0.99980891  =   0.99981433
 HV6703
 HV6703:                Primary Azimuth Mark                     Grid Az
 HV6703:SPC MD       -  CUT                                      341 57 28.8
 HV6703:UTM  18      -  CUT                                      343 12 08.5
 HV6703
 HV6703_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6975543783(NAD 83)
 HV6703
 HV6703|---------------------------------------------------------------------|
 HV6703| PID    Reference Object                     Distance      Geod. Az  |
 HV6703|                                                           dddmmss.s |
 HV6703| HV6711 SOLOMONS ISLAND ME CHURCH           APPROX. 2.8 KM 1115239.9 |
 HV6703| HV6691 POINT PATIENCE LIGHTHOUSE           APPROX. 0.7 KM 1260320.3 |
 HV6703| CX2845 HAM RM 1                             16.358 METERS 17504     |
 HV6703| CX2846 HAM RM 2                             14.882 METERS 26644     |
 HV6703| HV6796 CUT                                 APPROX. 3.0 KM 3421640.7 |
 HV6703|---------------------------------------------------------------------|
 HV6703
 HV6703                          SUPERSEDED SURVEY CONTROL
 HV6703
 HV6703  NAD 83(1986)-  38 19 57.82725(N)    076 29 24.67915(W) AD(       ) 3
 HV6703  NAD 27      -  38 19 57.37300(N)    076 29 25.82900(W) AD(       ) 3
 HV6703
 HV6703.Superseded values are not recommended for survey control.
 HV6703
 HV6703.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6703.See file dsdata.pdf to determine how the superseded data were derived.
 HV6703
 HV6703_MARKER: DS = TRIANGULATION STATION DISK
 HV6703_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6703_STAMPING: HAM 1943
 HV6703_MARK LOGO: CGS
 HV6703_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6703+STABILITY: SURFACE MOTION
 HV6703
 HV6703  HISTORY     - Date     Condition        Report By
 HV6703  HISTORY     - 1943     MONUMENTED       CGS
 HV6703  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6703  HISTORY     - 1961     SEE DESCRIPTION  CGS
 HV6703  HISTORY     - 1963     SEE DESCRIPTION  MDSFC
 HV6703
 HV6703                          STATION DESCRIPTION
 HV6703
 HV6703'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (BHR)
 HV6703'STATION IS ON THE SW SHORE OF THE PATUXENT RIVER, ABOUT 1/2 MILE
 HV6703'SE OF THE MOUTH OF THE CUCKOLD CREEK, 1/2 MILE NW OF POINT
 HV6703'PATIENCE, AND ON THE SE EDGE OF A SMALL PENINSULA BETWEEN MILL
 HV6703'AND KINGSTON CREEKS.  IT IS ON A LOW GRASSY POINT, APPROXIMATELY
 HV6703'5 METERS SW OF THE MEAN HIGH-WATER LINE ON THE N SIDE OF THE
 HV6703'POINT, AND APPROXIMATELY 15 METERS NW OF THE MEAN HIGH-WATER
 HV6703'LINE ON THE S SIDE OF THE POINT.  MARK IS 4 INCHES ABOVE THE
 HV6703'GROUND.  A 12-FOOT WHITE, WOODEN SLATTED TRIPOD HAS BEEN
 HV6703'ERECTED OVER THE MARK.
 HV6703'
 HV6703'STATION AND REFERENCE MARKS ARE BRONZE DISKS SET IN CONCRETE AT
 HV6703'THE CENTERS OF THE TOPS OF TILES WHICH ARE SET IN BLOCKS OF
 HV6703'CONCRETE.
 HV6703'
 HV6703'REFERENCE MARK 1 IS 53 FEET N OF THE STATION AND PROJECTS 4
 HV6703'INCHES ABOVE THE GROUND.
 HV6703'
 HV6703'REFERENCE MARK 2 IS 48 FEET E OF THE STATION AND PROJECTS 6
 HV6703'INCHES ABOVE THE GROUND.
 HV6703
 HV6703                          STATION RECOVERY (1960)
 HV6703
 HV6703'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6703'STATION NOT RECOVERED.  REFERENCE MARKS NO.1 WAS RECOVERED IN
 HV6703'GOOD CONDITION.  MEASUREMENTS FROM THE REFERENCE MARK PLACE THE
 HV6703'STATION ABOUT 15 FEET OFF SHORE OF MHWL.  THE STATION MONUMENT
 HV6703'COULD NOT BE FOUND IN THE WATER.  REFERENCE MARK NO.2 COULD NOT
 HV6703'BE FOUND AND IS BELIEVED TO BE COVERED WITH SAND.
 HV6703'
 HV6703'THE PUBLISHED DESCRIPTION IS ADEQUATE FOR RECOVERY OF R.M. NO.1.
 HV6703'IT IS NOW ON THE MHWL PROJECTING 4 INCHES AND STAMPED NO.1 1943.
 HV6703
 HV6703                          STATION RECOVERY (1961)
 HV6703
 HV6703'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (CRM)
 HV6703'STATION WAS COMPLETELY UPROOTED AND LAYING ON ITS SIDE, APPARENTLY
 HV6703'WASHED UP BY TIDAL ACTION.
 HV6703'
 HV6703'R.M. 1 WAS FOUND IN GOOD CONDITION.
 HV6703
 HV6703                          STATION RECOVERY (1963)
 HV6703
 HV6703'RECOVERY NOTE BY MARYLAND SHELL FISHERIES COMMISSION 1963 (GEH)
 HV6703'REFERENCE MARK 1 FOUND IN GOOD CONDITION.  IT IS ABOUT 15 FEET
 HV6703'FROM WATER EDGE, IN ABOUT 8-FOOT GRASS, ONE FOOT ABOVE SAND, TWF
 HV6703'BUILDING 15 FEET HIGH, RANGE OVER STATION WITH 2 YELLOW TARGETS.
 HV6703'
 HV6703'HAM RM1 43 LOST
 HV6703'
 HV6703'RM COULD NOT BE RECOVERED.  REMAINS OF SIGNAL OVER RM ERECTED
 HV6703'IN 1965 FOUND BUT MONUMENT HAS BEEN LOST TO EROSION
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5795 ***********************************************************************
 JV5795  DESIGNATION -  HAM
 JV5795  PID         -  JV5795
 JV5795  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5795  COUNTRY     -  US
 JV5795  USGS QUAD   -  ROUND BAY (2016)
 JV5795
 JV5795                         *CURRENT SURVEY CONTROL
 JV5795  ______________________________________________________________________
 JV5795* NAD 83(1991) POSITION- 39 04 40.83890(N) 076 30 14.55321(W)   ADJUSTED
 JV5795* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5795  ______________________________________________________________________
 JV5795  GEOID HEIGHT    -        -33.174 (meters)                     GEOID18
 JV5795  LAPLACE CORR    -         -3.38  (seconds)                    DEFLEC18
 JV5795  HORZ ORDER      -  THIRD
 JV5795
 JV5795.The horizontal coordinates were established by classical geodetic methods
 JV5795.and adjusted by the National Geodetic Survey in January 1992.
 JV5795
 JV5795.The orthometric height was scaled from a topographic map.
 JV5795
 JV5795.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5795.GEOID18 height accuracy estimate available here.
 JV5795
 JV5795.Click photographs - Photos may exist for this station.
 JV5795
 JV5795.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5795
 JV5795. The following values were computed from the NAD 83(1991) position.
 JV5795
 JV5795;                    North         East     Units Scale Factor Converg.
 JV5795;SPC MD       -   156,782.847   442,913.696   MT  0.99995606   +0 18 40.6
 JV5795;SPC MD       -   514,378.39  1,453,126.02   sFT  0.99995606   +0 18 40.6
 JV5795;UTM  18      - 4,326,510.132   369,902.349   MT  0.99980841   -0 56 53.7
 JV5795
 JV5795!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5795!SPC MD       -   1.00000509  x   0.99995606  =   0.99996115
 JV5795!UTM  18      -   1.00000509  x   0.99980841  =   0.99981349
 JV5795
 JV5795:                Primary Azimuth Mark                     Grid Az
 JV5795:SPC MD       -  BLACKHOLE                                085 09 23.6
 JV5795:UTM  18      -  BLACKHOLE                                086 24 57.9
 JV5795
 JV5795_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6990226510(NAD 83)
 JV5795
 JV5795|---------------------------------------------------------------------|
 JV5795| PID    Reference Object                     Distance      Geod. Az  |
 JV5795|                                                           dddmmss.s |
 JV5795| JV5189 BLACKHOLE                           APPROX. 1.0 KM 0852804.2 |
 JV5795|---------------------------------------------------------------------|
 JV5795
 JV5795                          SUPERSEDED SURVEY CONTROL
 JV5795
 JV5795  NAD 83(1986)-  39 04 40.83504(N)    076 30 14.56368(W) AD(       ) 3
 JV5795  NAD 27      -  39 04 40.41000(N)    076 30 15.64000(W) AD(       ) 3
 JV5795  USSD        -  39 04 40.78200(N)    076 30 15.52400(W) AD(       ) 3
 JV5795
 JV5795.Superseded values are not recommended for survey control.
 JV5795
 JV5795.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5795.See file dsdata.pdf to determine how the superseded data were derived.
 JV5795
 JV5795_MARK LOGO: CGS
 JV5795
 JV5795  HISTORY     - Date     Condition        Report By
 JV5795  HISTORY     - 1898     MONUMENTED       CGS
 JV5795  HISTORY     - 1906     SEE DESCRIPTION  CGS
 JV5795  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5795
 JV5795                          STATION DESCRIPTION
 JV5795
 JV5795'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5795'STATION IS ON N SHORE OF MAGOTHY RIVER, ON POINT AT WESTERN SIDE
 JV5795'OF ENTRANCE TO BLACKHOLE CREEK.  STATION IS MARKED WITH A PIECE
 JV5795'OF 2- BY 3-INCH TIMBER WITH CROSS BOARDS SET IN A BOX 3-1/2 FEET
 JV5795'DEEP, WITH TOP JUST ABOVE SURFACE OF GROUND.  AN OAK TREE WAS
 JV5795'MARKED WITH A NAIL IN A TRIANGULAR BLAZE.  IT IS 21.5 FEET N OF
 JV5795'THE STATION.  IN 1906, THE STATION WAS RECOVERED AND A NEW
 JV5795'STATION, HAM (1906) (POSITION NOT COMPUTED) WAS ERECTED ON A LOW
 JV5795'SANDY POINT MAKING OUT FROM A BLUFF 15 FEET HIGH.  IT IS 3
 JV5795'FEET ABOVE HIGH WATER, 10 FEET BACK FROM HIGH-WATER MARK, AND
 JV5795'MARKED BY A NAIL IN A WOODEN STUB PROJECTING 3 INCHES ABOVE
 JV5795'SURFACE OF THE GROUND.  IT IS 6.04 METERS (19.82 FEET) FROM
 JV5795'THE OLD STATION N 57 DEG 14 MIN W.  A REFERENCE MARK,
 JV5795'THE CENTER OF A TRIANGLE ON A MARYLAND SHELL FISH SURVEY STANDARD
 JV5795'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH
 JV5795'TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 JV5795'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 7.34 METERS
 JV5795'(24.08 FEET) FROM THE NEW STATION (1906) N 7 DEG 03
 JV5795'MIN E.  DISTANCES AND BEARINGS FROM THE NEW STATION (1906) TO
 JV5795'OTHER POINTS OF REFERENCES ARE AS FOLLOWS--NAIL IN
 JV5795'BLAZE IN 12-INCH TREE, 7.54 METERS (24.74 FEET), N 66 DEG
 JV5795'38 MIN E.  HOUSE ON DOBBINS ISLAND, 2-1/4 MILES, N 89 DEG
 JV5795'41 MIN E.
 JV5795
 JV5795                          STATION RECOVERY (1933)
 JV5795
 JV5795'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5795'STATION WAS SET AT THE SOUTHEASTERN POINT OF NORTH FERRY POINT,
 JV5795'NOW THE PROPERTY OF EDWARD L. WARD.  IT WAS ON A LOW SANDY POINT
 JV5795'IN FRONT OF A 15-FOOT BLUFF AND MARKED BY A WOODEN HUB.  NO
 JV5795'SANDY POINT COULD BE FOUND, THE BLUFF HAS BEEN WASHED AND A
 JV5795'SLOPING BANK FORMED.  NONE OF THE REFERENCES COULD BE
 JV5795'FOUND.  STATION HAS EITHER BEEN WASHED AWAY OR COVERED OVER BY
 JV5795'SAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5730 ***********************************************************************
 HV5730  DESIGNATION -  HAMBLETON
 HV5730  PID         -  HV5730
 HV5730  STATE/COUNTY-  MD/TALBOT
 HV5730  COUNTRY     -  US
 HV5730  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5730
 HV5730                         *CURRENT SURVEY CONTROL
 HV5730  ______________________________________________________________________
 HV5730* NAD 83(1991) POSITION- 38 49 14.02771(N) 076 13 35.10175(W)   ADJUSTED
 HV5730* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5730  ______________________________________________________________________
 HV5730  GEOID HEIGHT    -        -34.244 (meters)                     GEOID18
 HV5730  LAPLACE CORR    -         -4.84  (seconds)                    DEFLEC18
 HV5730  HORZ ORDER      -  THIRD
 HV5730
 HV5730.The horizontal coordinates were established by classical geodetic methods
 HV5730.and adjusted by the National Geodetic Survey in January 1992.
 HV5730
 HV5730.The orthometric height was scaled from a topographic map.
 HV5730
 HV5730.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5730.GEOID18 height accuracy estimate available here.
 HV5730
 HV5730.Click photographs - Photos may exist for this station.
 HV5730
 HV5730.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5730
 HV5730. The following values were computed from the NAD 83(1991) position.
 HV5730
 HV5730;                    North         East     Units Scale Factor Converg.
 HV5730;SPC MD       -   128,371.880   467,177.486   MT  0.99995031   +0 29 07.9
 HV5730;SPC MD       -   421,166.74  1,532,731.47   sFT  0.99995031   +0 29 07.9
 HV5730;UTM  18      - 4,297,578.974   393,532.921   MT  0.99973958   -0 46 08.0
 HV5730
 HV5730!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5730!SPC MD       -   1.00000541  x   0.99995031  =   0.99995572
 HV5730!UTM  18      -   1.00000541  x   0.99973958  =   0.99974499
 HV5730
 HV5730:                Primary Azimuth Mark                     Grid Az
 HV5730:SPC MD       -  SECOND POINT                             130 10 38.0
 HV5730:UTM  18      -  SECOND POINT                             131 25 53.9
 HV5730
 HV5730_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9353297578(NAD 83)
 HV5730
 HV5730|---------------------------------------------------------------------|
 HV5730| PID    Reference Object                     Distance      Geod. Az  |
 HV5730|                                                           dddmmss.s |
 HV5730| HV5665 SECOND POINT                        APPROX. 3.0 KM 1303945.9 |
 HV5730|---------------------------------------------------------------------|
 HV5730
 HV5730                          SUPERSEDED SURVEY CONTROL
 HV5730
 HV5730  NAD 83(1986)-  38 49 14.02352(N)    076 13 35.11522(W) AD(       ) 3
 HV5730  NAD 27      -  38 49 13.57500(N)    076 13 36.32500(W) AD(       ) 3
 HV5730  USSD        -  38 49 13.95700(N)    076 13 36.10300(W) AD(       ) 3
 HV5730
 HV5730.Superseded values are not recommended for survey control.
 HV5730
 HV5730.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5730.See file dsdata.pdf to determine how the superseded data were derived.
 HV5730
 HV5730_MARKER: N = NAIL
 HV5730_SETTING: 0 = UNSPECIFIED SETTING
 HV5730_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5730
 HV5730  HISTORY     - Date     Condition        Report By
 HV5730  HISTORY     - 1899     MONUMENTED       CGS
 HV5730  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5730
 HV5730                          STATION DESCRIPTION
 HV5730
 HV5730'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (JWD)
 HV5730'STATION IS ON W SIDE OF MILES RIVER, ON POINT AT E SIDE OF
 HV5730'ENTRANCE TO HAMBLETON CREEK, AT FOOT OF AN 8-FOOT BLUFF AND AT S
 HV5730'END OF A SMALL GROVE OF CEDAR AND OTHER TREES.  STATION MARKED BY
 HV5730'NAIL IN CENTER OF CEDAR STUB DRIVEN IN GROUND WITH TOP EVEN WITH
 HV5730'SURFACE THEREOF.
 HV5730
 HV5730                          STATION RECOVERY (1940)
 HV5730
 HV5730'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5730'STATION IS ON WESTERN SHORE OF MILES RIVER, ON POINT AT E SIDE OF
 HV5730'ENTRANCE TO HAMBLETON CREEK.  MARK SEARCHED FOR BUT NOT FOUND.
 HV5730'BELIEVED TO HAVE BEEN WASHED OUT.
 HV5730'
 HV5730'RECOMMEND THAT THIS STATION BE REPORTED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5871 ***********************************************************************
 HV5871  DESIGNATION -  HAMBROOK 1900
 HV5871  PID         -  HV5871
 HV5871  STATE/COUNTY-  MD/DORCHESTER
 HV5871  COUNTRY     -  US
 HV5871  USGS QUAD   -  CAMBRIDGE (2016)
 HV5871
 HV5871                         *CURRENT SURVEY CONTROL
 HV5871  ______________________________________________________________________
 HV5871* NAD 83(1991) POSITION- 38 35 33.83458(N) 076 05 23.13417(W)   ADJUSTED
 HV5871* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5871  ______________________________________________________________________
 HV5871  GEOID HEIGHT    -        -34.968 (meters)                     GEOID18
 HV5871  LAPLACE CORR    -         -3.40  (seconds)                    DEFLEC18
 HV5871  HORZ ORDER      -  THIRD
 HV5871
 HV5871.The horizontal coordinates were established by classical geodetic methods
 HV5871.and adjusted by the National Geodetic Survey in January 1992.
 HV5871
 HV5871.The orthometric height was scaled from a topographic map.
 HV5871
 HV5871.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5871.GEOID18 height accuracy estimate available here.
 HV5871
 HV5871.Click photographs - Photos may exist for this station.
 HV5871
 HV5871.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5871
 HV5871. The following values were computed from the NAD 83(1991) position.
 HV5871
 HV5871;                    North         East     Units Scale Factor Converg.
 HV5871;SPC MD       -   103,192.184   479,296.562   MT  0.99996198   +0 34 16.7
 HV5871;SPC MD       -   338,556.36  1,572,492.14   sFT  0.99996198   +0 34 16.7
 HV5871;UTM  18      - 4,272,146.196   405,095.963   MT  0.99971091   -0 40 47.4
 HV5871
 HV5871!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5871!SPC MD       -   1.00000521  x   0.99996198  =   0.99996719
 HV5871!UTM  18      -   1.00000521  x   0.99971091  =   0.99971612
 HV5871
 HV5871:                Primary Azimuth Mark                     Grid Az
 HV5871:SPC MD       -  SHOAL                                    131 27 05.5
 HV5871:UTM  18      -  SHOAL                                    132 42 09.6
 HV5871
 HV5871_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0509572146(NAD 83)
 HV5871
 HV5871|---------------------------------------------------------------------|
 HV5871| PID    Reference Object                     Distance      Geod. Az  |
 HV5871|                                                           dddmmss.s |
 HV5871| HV5857 SHOAL                               APPROX. 4.2 KM 1320122.2 |
 HV5871|---------------------------------------------------------------------|
 HV5871
 HV5871                          SUPERSEDED SURVEY CONTROL
 HV5871
 HV5871  NAD 83(1986)-  38 35 33.83164(N)    076 05 23.15115(W) AD(       ) 3
 HV5871  NAD 27      -  38 35 33.39500(N)    076 05 24.37700(W) AD(       ) 3
 HV5871  USSD        -  38 35 33.79100(N)    076 05 24.18100(W) AD(       ) 3
 HV5871
 HV5871.Superseded values are not recommended for survey control.
 HV5871
 HV5871.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5871.See file dsdata.pdf to determine how the superseded data were derived.
 HV5871
 HV5871_MARKER: N = NAIL
 HV5871_SETTING: 0 = UNSPECIFIED SETTING
 HV5871_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5871
 HV5871  HISTORY     - Date     Condition        Report By
 HV5871  HISTORY     - 1900     MONUMENTED       CGS
 HV5871
 HV5871                          STATION DESCRIPTION
 HV5871
 HV5871'DESCRIBED BY COAST AND GEODETIC SURVEY 1900 (FFW)
 HV5871'ON SOUTHERN SHORE OF CHOPTANK RIVER, ON MARSH POINT ON HAMBROOK
 HV5871'BAR, 37 PACES N OF TWO SMALL CEDAR TREES AT EDGE OF HARD GROUND.
 HV5871'MARKED BY NAIL IN CEDAR POST INSIDE A DRAIN TILE PIPE, PIPE BEING
 HV5871'SET 18 INCHES BELOW SURFACE OF GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 CX2847 ***********************************************************************
 CX2847  DESIGNATION -  HAMILTON AZ MK
 CX2847  PID         -  CX2847
 CX2847  STATE/COUNTY-  MD/TALBOT
 CX2847  COUNTRY     -  US
 CX2847  USGS QUAD   -  CLAIBORNE (2016)
 CX2847
 CX2847                         *CURRENT SURVEY CONTROL
 CX2847  ______________________________________________________________________
 CX2847* NAD 83(1986) POSITION- 38 46 56.2    (N) 076 15 39.2    (W)   HD_HELD2
 CX2847* NAVD 88 ORTHO HEIGHT -     1.736 (meters)        5.70  (feet) ADJUSTED
 CX2847  ______________________________________________________________________
 CX2847  GEOID HEIGHT    -        -34.242 (meters)                     GEOID18
 CX2847  DYNAMIC HEIGHT  -          1.735 (meters)        5.69  (feet) COMP
 CX2847  MODELED GRAVITY -    980,048.2   (mgal)                       NAVD 88
 CX2847
 CX2847  VERT ORDER      -  SECOND    CLASS I
 CX2847
 CX2847.The horizontal coordinates were established by autonomous hand held GPS
 CX2847.observations and have an estimated accuracy of +/- 10 meters.
 CX2847
 CX2847.The orthometric height was determined by differential leveling and
 CX2847.adjusted by the NATIONAL GEODETIC SURVEY
 CX2847.in September 2004.
 CX2847
 CX2847.No vertical observational check was made to the station.
 CX2847
 CX2847.Significant digits in the geoid height do not necessarily reflect accuracy.
 CX2847.GEOID18 height accuracy estimate available here.
 CX2847
 CX2847.Click photographs - Photos may exist for this station.
 CX2847
 CX2847.The dynamic height is computed by dividing the NAVD 88
 CX2847.geopotential number by the normal gravity value computed on the
 CX2847.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 CX2847.degrees latitude (g = 980.6199 gals.).
 CX2847
 CX2847.The modeled gravity was interpolated from observed gravity values.
 CX2847
 CX2847;                    North         East    Units  Estimated Accuracy
 CX2847;SPC MD       -   124,097.      464,218.      MT  (+/- 10 meters HH2 GPS)
 CX2847
 CX2847_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9048193371(NAD 83)
 CX2847
 CX2847                          SUPERSEDED SURVEY CONTROL
 CX2847
 CX2847.No superseded survey control is available for this station.
 CX2847
 CX2847_MARKER: DZ = AZIMUTH MARK DISK
 CX2847_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 CX2847_STAMPING: HAMILTON AZ MK 1934
 CX2847_MARK LOGO: CGS
 CX2847_MAGNETIC: O = OTHER; SEE DESCRIPTION
 CX2847_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 CX2847+STABILITY: SURFACE MOTION
 CX2847_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 CX2847+SATELLITE: SATELLITE OBSERVATIONS - April 13, 2005
 CX2847
 CX2847  HISTORY     - Date     Condition        Report By
 CX2847  HISTORY     - 1934     MONUMENTED       CGS
 CX2847  HISTORY     - 20011009 GOOD             MDSHA
 CX2847  HISTORY     - 20050413 GOOD             USPSQD
 CX2847
 CX2847                          STATION DESCRIPTION
 CX2847
 CX2847'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 CX2847'THE MARK IS LOCATED ABOUT 2.0 MI (3.22 KM) WEST OF ST MICHAELS, 2.0 MI
 CX2847'(3.22 KM) EAST-SOUTHEAST OF WITTMAN AND 1.0 MI (1.61 KM)
 CX2847'NORTH-NORTHEAST OF BOZMAN.  OWNERSHIP--MS. PRISCILLA P. MILLER, 8469
 CX2847'BOZMAN ROAD, ST MICHAELS, MD. 21663.  TO REACH THE MARK FROM THE POST
 CX2847'OFFICE IN ST. MICHAELS, GO NORTHWEST ALONG STATE HIGHWAY 33 FOR 2.5
 CX2847'MILES (4.0 KM) TO STATE HIGHWAY 579 LEADING SOUTH.  TURN LEFT AND GO
 CX2847'SOUTH ALONG STATE HIGHWAY 579 FOR 2.1 MILES (3.4 KM) TO 8513 BOZMAN
 CX2847'ROAD AND A GRAVEL DRIVEWAY ON THE LEFT.  TURN LEFT AND GO EAST ON THE
 CX2847'GRAVEL DRIVEWAY FOR 0.27 MI (0.43 KM) TO A HOUSE OWNED BY MR. JONATHAN
 CX2847'WEST SLOAT.  WALK SOUTHEASTELY FOR 300 FT (91.4 M) PAST A SWIMMING
 CX2847'POOL TO THE MARK IN THE EDGE OF THE WOODS NEAR THE SHORELINE.  IT IS
 CX2847'83.2 M (273.0 FT) SOUTH FROM THE SOUTHEAST CORNER OF MR. SLOATS HOUSE,
 CX2847'26.8 M (87.9 FT) SOUTH-SOUTHEAST FROM THE SOUTHEAST CORNER OF THE
 CX2847'SWIMMING POOL, 6.1 M (20.0 FT) WEST FROM THE WEST SHORE OF BROAD
 CX2847'CREEK, AND 0.37 M (1.2 FT) WEST FROM A METAL WITNESS POST.  IT IS A
 CX2847'CGS AZ MK DISK SET IN THE TOP OF A 12-INCH (30 CM) SQUARE CONCRETE
 CX2847'POST FLUSH WITH THE GROUND.
 CX2847
 CX2847                          STATION RECOVERY (2005)
 CX2847
 CX2847'RECOVERY NOTE BY US POWER SQUADRON 2005 (ADH)
 CX2847'THIS MARK WAS EASILY FOUND AS PER THE DIRECTIONS.  HOWEVER, IT IS
 CX2847'NOTED THAT THE MR. JONATHAN WEST SLOAT MENTIONED IN THE DESCRIPTION IS
 CX2847'NOW DECEASED AND NOT THE OWNER OF THE HOUSE 0.27 MILES EAST ON THE
 CX2847'GRAVEL DRIVEWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9002 ***********************************************************************
 HV9002  DESIGNATION -  HAMILTON AZ MK 2
 HV9002  PID         -  HV9002
 HV9002  STATE/COUNTY-  MD/TALBOT
 HV9002  COUNTRY     -  US
 HV9002  USGS QUAD   -  CLAIBORNE (2016)
 HV9002
 HV9002                         *CURRENT SURVEY CONTROL
 HV9002  ______________________________________________________________________
 HV9002* NAD 83(1991) POSITION- 38 47 28.65027(N) 076 15 49.51050(W)   ADJUSTED
 HV9002* NAVD 88 ORTHO HEIGHT -     2.031 (meters)        6.66  (feet) ADJUSTED
 HV9002  ______________________________________________________________________
 HV9002  GEOID HEIGHT    -        -34.215 (meters)                     GEOID18
 HV9002  LAPLACE CORR    -         -5.08  (seconds)                    DEFLEC18
 HV9002  DYNAMIC HEIGHT  -          2.030 (meters)        6.66  (feet) COMP
 HV9002  MODELED GRAVITY -    980,049.7   (mgal)                       NAVD 88
 HV9002
 HV9002  HORZ ORDER      -  THIRD
 HV9002  VERT ORDER      -  SECOND    CLASS I
 HV9002
 HV9002.The horizontal coordinates were established by classical geodetic methods
 HV9002.and adjusted by the National Geodetic Survey in January 1992.
 HV9002
 HV9002.The orthometric height was determined by differential leveling and
 HV9002.adjusted by the NATIONAL GEODETIC SURVEY
 HV9002.in September 2004.
 HV9002
 HV9002.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9002.GEOID18 height accuracy estimate available here.
 HV9002
 HV9002.Click photographs - Photos may exist for this station.
 HV9002
 HV9002.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9002
 HV9002.The dynamic height is computed by dividing the NAVD 88
 HV9002.geopotential number by the normal gravity value computed on the
 HV9002.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9002.degrees latitude (g = 980.6199 gals.).
 HV9002
 HV9002.The modeled gravity was interpolated from observed gravity values.
 HV9002
 HV9002. The following values were computed from the NAD 83(1991) position.
 HV9002
 HV9002;                    North         East     Units Scale Factor Converg.
 HV9002;SPC MD       -   125,095.852   463,961.548   MT  0.99995093   +0 27 43.5
 HV9002;SPC MD       -   410,418.64  1,522,180.51   sFT  0.99995093   +0 27 43.5
 HV9002;UTM  18      - 4,294,374.782   390,246.728   MT  0.99974833   -0 47 30.5
 HV9002
 HV9002!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9002!SPC MD       -   1.00000505  x   0.99995093  =   0.99995598
 HV9002!UTM  18      -   1.00000505  x   0.99974833  =   0.99975338
 HV9002
 HV9002_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9024694374(NAD 83)
 HV9002
 HV9002                          SUPERSEDED SURVEY CONTROL
 HV9002
 HV9002  NAD 83(1986)-  38 47 28.64625(N)    076 15 49.52370(W) AD(       ) 3
 HV9002
 HV9002.Superseded values are not recommended for survey control.
 HV9002
 HV9002.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9002.See file dsdata.pdf to determine how the superseded data were derived.
 HV9002
 HV9002_MARKER: DZ = AZIMUTH MARK DISK
 HV9002_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9002_STAMPING: HAMILTON 1934 NO 2 1987
 HV9002_MARK LOGO: NGS
 HV9002_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV9002_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9002+STABILITY: SURFACE MOTION
 HV9002_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9002+SATELLITE: SATELLITE OBSERVATIONS - October 09, 2001
 HV9002
 HV9002  HISTORY     - Date     Condition        Report By
 HV9002  HISTORY     - 1987     MONUMENTED       NGS
 HV9002  HISTORY     - 20011009 GOOD             MDSHA
 HV9002
 HV9002                          STATION DESCRIPTION
 HV9002
 HV9002'DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HV9002'THE STATION IS LOCATED ABOUT 16 KM (9.9 MI) WEST OF EASTON 5.6 KM
 HV9002'(3.5 MI) WEST OF ST MICHAELS 3.1 KM (1.9 MI) NORTH OF BOZMAN AND ON
 HV9002'THE WEST EDGE OF MD 579.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV9002'
 HV9002'TO REACH THE STATION FROM THE POST OFFICE IN ST MICHAELS, GO NORTHWEST
 HV9002'FOR 4.3 KM (2.7 MI) ON MD 33 TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 HV9002'SOUTH FOR 2.75 KM (1.71 MI) ON MD 579 TO THE STATION ON THE RIGHT.
 HV9002'
 HV9002'THE STATION IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HV9002'STAMPED---HAMILTON 1934 NO 2 1987---, SET INTO THE TOP OF A ROUND
 HV9002'CONCRETE MONUMENT 25 CM (10 INCHES) IN DIAMETER FLUSH WITH THE GROUND.
 HV9002'LOCATED 12.6 M (41.3 FT) NORTHWEST FROM THE CENTER OF MD 579, 21.3 M
 HV9002'(69.9 FT) NORTH FROM A JUNCTION WITH A ROAD LEADING TO HOLLY POINT,
 HV9002'5.7 M (18.7 FT) NORTHWEST FROM THE NORTHWEST END OF A 30-INCH (76 CM)
 HV9002'COROGATED DRAIN PIPE, 0.7 M (2.3 FT) SOUTH FROM A POWER LINE POLE
 HV9002'NUMBERED 3A 30 T35 28022 08836 AND 0.5 M (1.6 FT) NORTHEAST FROM A
 HV9002'CARSONITE WITNESS POST.  THE UNDERGROUND MARK IS A STANDARD NATIONAL
 HV9002'GEODETIC SURVEY DISK STAMPED---HAMILTON 1934 NO 2 1987---, SET INTO
 HV9002'AN IRREGULAR MASS OF CONCRETE 1.1 M (3.6 FT) BELOW THE SURFACE.
 HV9002
 HV9002                          STATION RECOVERY (2001)
 HV9002
 HV9002'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HV9002'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1518 ***********************************************************************
 HU1518  DESIGNATION -  HAMILTON MSFC 1908
 HU1518  PID         -  HU1518
 HU1518  STATE/COUNTY-  MD/WORCESTER
 HU1518  COUNTRY     -  US
 HU1518  USGS QUAD   -  OCEAN CITY (2016)
 HU1518
 HU1518                         *CURRENT SURVEY CONTROL
 HU1518  ______________________________________________________________________
 HU1518* NAD 83(1991) POSITION- 38 20 07.04056(N) 075 05 07.63730(W)   ADJUSTED
 HU1518* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU1518  ______________________________________________________________________
 HU1518  GEOID HEIGHT    -        -36.057 (meters)                     GEOID18
 HU1518  LAPLACE CORR    -         -0.59  (seconds)                    DEFLEC18
 HU1518  HORZ ORDER      -  THIRD
 HU1518
 HU1518.The horizontal coordinates were established by classical geodetic methods
 HU1518.and adjusted by the National Geodetic Survey in January 1992.
 HU1518
 HU1518.The orthometric height was scaled from a topographic map.
 HU1518
 HU1518.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1518.GEOID18 height accuracy estimate available here.
 HU1518
 HU1518.Click photographs - Photos may exist for this station.
 HU1518
 HU1518.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1518
 HU1518. The following values were computed from the NAD 83(1991) position.
 HU1518
 HU1518;                    North         East     Units Scale Factor Converg.
 HU1518;SPC MD       -    75,975.238   567,377.444   MT  0.99999405   +1 12 05.9
 HU1518;SPC MD       -   249,262.09  1,861,470.83   sFT  0.99999405   +1 12 05.9
 HU1518;UTM  18      - 4,243,020.555   492,531.584   MT  0.99960069   -0 03 10.8
 HU1518
 HU1518!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1518!SPC MD       -   1.00000538  x   0.99999405  =   0.99999943
 HU1518!UTM  18      -   1.00000538  x   0.99960069  =   0.99960607
 HU1518
 HU1518:                Primary Azimuth Mark                     Grid Az
 HU1518:SPC MD       -  GANTT                                    288 59 39.1
 HU1518:UTM  18      -  GANTT                                    290 14 55.8
 HU1518
 HU1518_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9253143020(NAD 83)
 HU1518
 HU1518|---------------------------------------------------------------------|
 HU1518| PID    Reference Object                     Distance      Geod. Az  |
 HU1518|                                                           dddmmss.s |
 HU1518| HU1513 CONVENT WATER TOWER                 APPROX. 1.1 KM 0270112.3 |
 HU1518| HU1517 OCEAN CITY WATER TANK               APPROX. 0.6 KM 1984803.0 |
 HU1518| HU1503 GANTT                               APPROX. 2.0 KM 2901145.0 |
 HU1518|---------------------------------------------------------------------|
 HU1518
 HU1518                          SUPERSEDED SURVEY CONTROL
 HU1518
 HU1518  NAD 83(1986)-  38 20 07.02269(N)    075 05 07.66629(W) AD(       ) 3
 HU1518  NAD 27      -  38 20 06.61473(N)    075 05 09.01343(W) AD(       ) 3
 HU1518  USSD        -  38 20 06.80100(N)    075 05 08.77800(W) AD(       ) 3
 HU1518
 HU1518.Superseded values are not recommended for survey control.
 HU1518
 HU1518.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1518.See file dsdata.pdf to determine how the superseded data were derived.
 HU1518
 HU1518_MARKER: H = DRILL HOLE
 HU1518_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1518_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1518+STABILITY: SURFACE MOTION
 HU1518
 HU1518  HISTORY     - Date     Condition        Report By
 HU1518  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1518  HISTORY     - 1929     MARK NOT FOUND   CGS
 HU1518  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1518
 HU1518                          STATION DESCRIPTION
 HU1518
 HU1518'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1518'ON THE EASTERN SHORE OF SINEPUXENT BAY, IN OCEAN CITY, ABOUT 1/2
 HU1518'MILE NE OF THE RAILWAY BRIDGE AND TWO-THIRDS THE WAY FROM
 HU1518'SINEPUXENT BAY TO THE BOARDWALK ON THE OCEAN SIDE, ON SAND AND
 HU1518'GRASS LAND ABOUT 6 YARDS ESE OF THE EXTENSION OF THE E CURB LINE
 HU1518'OF PHILADELPHIA AVENUE, 145 YARDS NW OF EPISCOPAL CHURCH SPIRE, 16
 HU1518'YARDS ESE OF THE TELEPHONE LINE ON EDGE OF WAGON TRAIL ALONG
 HU1518'PROPOSED PHILADELPHIA AVENUE, AND 40 YARDS N OF AN EXPOSED
 HU1518'LINE OF SEWER PIPE.  STATION MARK IS CENTER OF STATION CEMENT
 HU1518'MONUMENT OF THE MARYLAND SHELL FISH SURVEY WHICH PROJECTS 3 TO 5
 HU1518'INCHES ABOVE THE SURFACE WHICH IS MADE OF CONCRETE 2
 HU1518'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1518'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1518'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1518'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1518'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1518'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1518'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1518'THE LOCATION OF THE STATION.
 HU1518'
 HU1518'DISTANCES AND AZIMUTHS TO POINT OF REFERENCE ARE AS
 HU1518'FOLLOWS--PRESBYTERIAN CHURCH SPIRE, 1/4 MILE, S 12 DEG 01 MIN W.
 HU1518'POWER-HOUSE CHIMNEY, 1/4 MILE, S 15 DEG 14 MIN W.  LEFT CHIMNEY
 HU1518'OF GRAYS HOUSE, 1-1/4 MILES, S 63 DEG 32 MIN W.  CHIMNEY OF HOUSE ON
 HU1518'THOROFARE FARM 1-1/2 MILES, N 40 DEG 31 MIN W.  CONVENT WATER TOWER,
 HU1518'3/4 MILE, N 27 DEG 41 MIN W.  S END OF ROOF OF QUILLINS COTTAGE,
 HU1518'400 YARDS, N 69 DEG 51 MIN E.  PEAK ON TOWER OF DOYLES COTTAGE, 350
 HU1518'YARDS, N 84 DEG 27 MIN E.  CHIMNEY OF MERVUES COTTAGE, 350 YARDS,
 HU1518'S 67 DEG 02 MIN E.  CHIMNEY OF HOTEL HAMILTON, 225 YARDS, S 63 DEG
 HU1518'49 MIN E.  ESPICOPAL CHURCH SPIRE, 145 YARDS, S 51 DEG 58 MIN E.
 HU1518'CHIMNEY ON ATKINS COTTAGE, 175 YARDS, S 17 DEG 52 MIN E.  FLAGSTAFF
 HU1518'ON LEFT END OF MOUNT PLEASANT HOTEL, 1/4 MILE, S 6 DEG 06 MIN E.
 HU1518
 HU1518                          STATION RECOVERY (1929)
 HU1518
 HU1518'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (CFE)
 HU1518'STATION NOT RECOVERED.  SITE VISITED AND STONE MARKING STATION
 HU1518'FOUND LYING ON GROUND.
 HU1518
 HU1518                          STATION RECOVERY (1962)
 HU1518
 HU1518'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1518'THE STATION COULD NOT BE FOUND AFTER AN EXTENSIVE SEARCH.  THE
 HU1518'MARK WAS REPORTED LYING ON THE GROUND BY C.F.E. IN 1929.
 HU1518'
 HU1518'THE STATION SHOULD BE RECOMMENDED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6264 ***********************************************************************
 HV6264  DESIGNATION -  HAMILTON RESET
 HV6264  PID         -  HV6264
 HV6264  STATE/COUNTY-  MD/TALBOT
 HV6264  COUNTRY     -  US
 HV6264  USGS QUAD   -  CLAIBORNE (2016)
 HV6264
 HV6264                         *CURRENT SURVEY CONTROL
 HV6264  ______________________________________________________________________
 HV6264* NAD 83(1991) POSITION- 38 47 05.75059(N) 076 15 55.92223(W)   ADJUSTED
 HV6264* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV6264  ______________________________________________________________________
 HV6264  GEOID HEIGHT    -        -34.224 (meters)                     GEOID18
 HV6264  LAPLACE CORR    -         -5.10  (seconds)                    DEFLEC18
 HV6264  HORZ ORDER      -  SECOND
 HV6264
 HV6264.The horizontal coordinates were established by classical geodetic methods
 HV6264.and adjusted by the National Geodetic Survey in January 1992.
 HV6264
 HV6264.The orthometric height was scaled from a topographic map.
 HV6264
 HV6264.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6264.GEOID18 height accuracy estimate available here.
 HV6264
 HV6264.Click photographs - Photos may exist for this station.
 HV6264
 HV6264.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6264
 HV6264. The following values were computed from the NAD 83(1991) position.
 HV6264
 HV6264;                    North         East     Units Scale Factor Converg.
 HV6264;SPC MD       -   124,388.517   463,812.505   MT  0.99995110   +0 27 39.5
 HV6264;SPC MD       -   408,097.99  1,521,691.53   sFT  0.99995110   +0 27 39.5
 HV6264;UTM  18      - 4,293,671.020   390,082.276   MT  0.99974878   -0 47 34.1
 HV6264
 HV6264!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6264!SPC MD       -   1.00000494  x   0.99995110  =   0.99995604
 HV6264!UTM  18      -   1.00000494  x   0.99974878  =   0.99975372
 HV6264
 HV6264:                Primary Azimuth Mark                     Grid Az
 HV6264:SPC MD       -  HAMILTON AZ MK                           125 02 22.2
 HV6264:UTM  18      -  HAMILTON AZ MK                           126 17 35.8
 HV6264
 HV6264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9008293671(NAD 83)
 HV6264
 HV6264|---------------------------------------------------------------------|
 HV6264| PID    Reference Object                     Distance      Geod. Az  |
 HV6264|                                                           dddmmss.s |
 HV6264| HV9002 HAMILTON AZ MK 2                    APPROX. 0.7 KM 0122135.2 |
 HV6264| CX2848 HAMILTON RM 1                        34.601 METERS 05542     |
 HV6264| CX2850 HAMILTON RM 3                        34.619 METERS 05544     |
 HV6264| HV5671 ST MICHAELS WATER TANK              APPROX. 3.5 KM 0863340.6 |
 HV6264| CX2847 HAMILTON AZ MK                                     1253001.7 |
 HV6264| CX2849 HAMILTON RM 2                        37.635 METERS 27259     |
 HV6264|---------------------------------------------------------------------|
 HV6264
 HV6264                          SUPERSEDED SURVEY CONTROL
 HV6264
 HV6264  NAD 83(1986)-  38 47 05.74668(N)    076 15 55.93610(W) AD(       ) 2
 HV6264  NAD 27      -  38 47 05.32100(N)    076 15 57.12100(W) AD(       ) 2
 HV6264
 HV6264.Superseded values are not recommended for survey control.
 HV6264
 HV6264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6264.See file dsdata.pdf to determine how the superseded data were derived.
 HV6264
 HV6264_MARKER: DS = TRIANGULATION STATION DISK
 HV6264_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6264_STAMPING: HAMILTON 1934 1979
 HV6264_MARK LOGO: CGS
 HV6264_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV6264_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6264+STABILITY: SURFACE MOTION
 HV6264_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV6264+SATELLITE: SATELLITE OBSERVATIONS - November 30, 1999
 HV6264
 HV6264  HISTORY     - Date     Condition        Report By
 HV6264  HISTORY     - 1934     MONUMENTED       CGS
 HV6264  HISTORY     - 1961     GOOD             CGS
 HV6264  HISTORY     - 1974     MARK NOT FOUND   MDDNR
 HV6264  HISTORY     - 1979     SEE DESCRIPTION  NGS
 HV6264  HISTORY     - 1987     GOOD             NGS
 HV6264  HISTORY     - 19991130 MARK NOT FOUND   MDSHA
 HV6264
 HV6264                          STATION DESCRIPTION
 HV6264
 HV6264'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6264'THIS SECOND-ORDER STATION IS 10-1/2 MILES AIRLINE W OF EASTERN
 HV6264'MARYLAND, ABOUT 2 MILES W OF ST. MICHAELS, MARYLAND, AND ABOUT
 HV6264'2-1/2 MILES E OF CHESAPEAKE BAY, ON NARROW PENINSULA BETWEEN
 HV6264'HARRIS CREEK AND BROAD CREEK, ON LAND OWNED BY MR. T.B. HAMILTON,
 HV6264'IN A T-FENCE CORNER ABOUT 0.1 MILE NE OF HOUSE, IN NE CORNER OF
 HV6264'SMALL HAY FIELD, E OF HOUSE.  THE E-W FENCE SEPARATES THIS FIELD
 HV6264'FROM A CULTIVATED FIELD ON N SIDE OF FENCE, N-S FENCE IS ALONG
 HV6264'ROAD.  STATION IS 38 FEET W OF CENTER LINE OF ROAD, 18 FEET W
 HV6264'OF 10-INCH CEDAR TREE IN FENCE CORNER, 70 FEET E OF TWIN 6-INCH
 HV6264'CEDAR TREE IN FENCE LINE, 250 FEET N OF CENTER LINE OF DRIVE AT
 HV6264'ENTRANCE FROM ROAD.  MARK PROJECTS 5 INCHES ABOVE GROUND.
 HV6264'
 HV6264'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HV6264'BRONZE DISKS SET IN CONCRETE.
 HV6264'
 HV6264'REFERENCE MARK NO.1 IS NE OF STATION, PROJECTS 6 INCHES, 48 FEET
 HV6264'E OF CENTER LINE OF ROAD, IN NW CORNER OF CULTIVATED FIELD, AND SW
 HV6264'CORNER OF WOODS, AT N EDGE OF FIELD AND S EDGE OF WOODS.
 HV6264'
 HV6264'REFERENCE MARK NO.2 IS W OF STATION IN FENCE LINE.  MARK PROJECTS
 HV6264'3 INCHES ABOVE GROUND, 53 FEET W OF TWIN CEDAR TREE IN FENCE LINE.
 HV6264'
 HV6264'AZIMUTH MARK IS 0.3 MILE SE OF STATION, ON W BANK OF CREEK, E OF
 HV6264'STATION, 7 PACES W OF W BANK, 2 FEET S OF 5-INCH PINE TREE, 2 FEET
 HV6264'W OF 4-INCH PINE TREE, 72 FEET NE OF NE CORNER OF 2-STORY FRAME
 HV6264'HOUSE.
 HV6264'
 HV6264'REACHED FROM EASTON, MARYLAND, GO 1 BLOCK N FROM COURTHOUSE TO
 HV6264'INTERSECTION OF U.S. HIGHWAY 213 AND STATE HIGHWAY 17, GO W 9.8
 HV6264'MILES TO ST. MICHAELS, CONTINUE W ON STATE HIGHWAY 17 FOR 2.4 MILES
 HV6264'TO MACADAM T-ROAD TO LEFT, AT SIGN BOZMAN 3-1/2 MILES, NEAVITT 7
 HV6264'MILES, TURN LEFT AND FOLLOW MAIN ROAD FOR 2.1 MILES TO STATION.
 HV6264'
 HV6264'A 103-FOOT TOWER NECESSARY.
 HV6264
 HV6264                          STATION RECOVERY (1961)
 HV6264
 HV6264'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6264'STATION MARK AND REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 HV6264'CONDITION.  THE AZIMUTH MARK WAS NOT FOUND AFTER A THOROUGH
 HV6264'SEARCH.  THE PUBLISHED DESCRIPTION IS ADEQUATE WITH THE EXCEPTION
 HV6264'THAT THE 6 INCH CEDAR TREE HAS BEEN REMOVED.
 HV6264
 HV6264                          STATION RECOVERY (1974)
 HV6264
 HV6264'RECOVERY NOTE BY MD DEPT OF NAT RES 1974
 HV6264'THE STATION SURFACE MARK WAS NOT RECOVERED, POSSIBLY UNDERGROUND
 HV6264'MARK STILL EXISTS.  ROAD HAS BEEN IMPROVED, SITE OF STATION HAS BEEN
 HV6264'REGRADED AND DRAIN CULVERT INSTALLED.  10 INCHES CEDAR TREE IS
 HV6264'GONE.
 HV6264'
 HV6264'RM 1 AND RM 2 NOT RECOVERED BECAUSE OF HEAVY GROWTH.
 HV6264
 HV6264                          STATION RECOVERY (1979)
 HV6264
 HV6264'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 HV6264'NO OTHER OBJECTS VISIBLE FROM THE GROUND.  UNABLE TO MEASURE
 HV6264'BETWEEN RMS.
 HV6264'
 HV6264'THE STATION SURFACE MARK AND REFERENCE MARK ONE WERE FOUND DESTROYED,
 HV6264'THE STATION SUB-SURFACE MARK WAS FOUND IN GOOD CONDITION ABOUT 5
 HV6264'FEET BELOW THE SURFACE OF THE WEST SHOULDER OF STATE HIGHWAY
 HV6264'579.  REFERENCE MARK 2 WAS FOUND IN GOOD CONDITION IN THE EAST-WEST
 HV6264'WOODED FENCE LINE.  THE AZIMUTH MARK WAS FOUND IN GOOD CONDITION BUT
 HV6264'OBSTRUCTED FROM THE STATION BY LARGE TREES.  REFERENCE MARK ONE WAS
 HV6264'FOUND DESTROYED AND A NEW REFERENCE MARK THREE WAS ESTABLISHED NEAR
 HV6264'WHERE REFERENCE MARK ONE WAS FORMERLY LOCATED.
 HV6264'
 HV6264'A COMPLETE NEW DESCRIPTION FOLLOWS.
 HV6264'
 HV6264'THE STATION IS LOCATED ABOUT 10 AIRLINE MILES WEST OF EASTON, 3-1/2
 HV6264'MILES SOUTHWEST OF ST. MICHAELS, 1-1/2 MILES NORTH OF BOZMAN AND ON
 HV6264'ROAD RIGHT-OF-WAY.
 HV6264'
 HV6264'TO REACH THE STATION FROM THE POST OFFICE IN ST. MICHAELS, GO
 HV6264'NORTHWEST ON STATE HIGHWAY 33 FOR 2.6 MILES TO A SIDE ROAD LEFT.
 HV6264'TURN LEFT AND GO SOUTHERLY ON STATE HIGHWAY 579 FOR 2.15 MILES TO THE
 HV6264'STATION ON THE RIGHT.
 HV6264'
 HV6264'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 HV6264'STAMPED---HAMILTON 1934 1979---SET INTO THE TOP OF A ROUND CONCRETE
 HV6264'MONUMENT 25 CM (10 INCHES) IN DIAMETER RECESSED 8 CM (3.1 INCHES)
 HV6264'BELOW THE GROUND LOCATED 38.10 METERS (125.0 FEET) E FROM A WITNESS
 HV6264'POST, 35.05 METERS (115.0 FEET) SW FROM A WITNESS POST, 16.15 METERS
 HV6264'(53.0 FEET) SE FROM A POWERLINE POLE NUMBERED 57-38, AND 4.79 METERS
 HV6264'(15.7 FEET) W FROM THE CENTER OF STATE HIGHWAY 579.
 HV6264'
 HV6264'THE UNDERGROUND MARK IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HV6264'NOS) DISK STAMPED---HAMILTON 1934---IMBEDDED IN THE GROUND 1.5
 HV6264'METERS (5 FEET) BELOW THE SURFACE.
 HV6264'
 HV6264'REFERENCE MARK NO. 2 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HV6264'NOS) DISK STAMPED---HAMILTON 1934 NO 2---SET INTO THE TOP OF A
 HV6264'SQUARE CONCRETE MONUMENT 30 CM (12 INCHES) ON SIDE FLUSH WITH THE
 HV6264'GROUND LOCATED 42.37 METERS (139.0 FEET) W FROM THE CENTER OF STATE
 HV6264'HIGHWAY 579, 35.66 METERS (117.0 FEET) WSW FROM THE POWERLINE POLE
 HV6264'NUMBERED 57-38, 2.74 METERS (9.0 FEET) SE FROM A APPLE TREE, 0.52
 HV6264'METER (1.7 FEET) E FROM THE WITNESS POST, AND 0.6 METER (2 FEET)
 HV6264'LOWER THAN THE STATION.
 HV6264'
 HV6264'REFERENCE MARK NO. 3 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HV6264'NOS) DISK STAMPED---HAMILTON 1934 NO 3 1979---SET INTO THE TOP OF A
 HV6264'SQUARE CONCRETE MONUMENT 30 CM (12 INCHES) ON SIDE PROJECTING 15 CM
 HV6264'(6 INCHES) ABOVE THE GROUND LOCATED 19.8 METERS (65 FEET) E FROM THE
 HV6264'CENTER OF STATE HIGHWAY 579, 0.49 METER (1.6 FEET) S FROM A WITNESS
 HV6264'POST, 3.4 METERS (11 FEET) N FROM THE CENTER OF A DRIVE LEADING EAST,
 HV6264'11.6 METERS (38 FEET) NE FROM A POWERLINE POLE NUMBERED
 HV6264'1-27975-08607, AND 0.6 METER (2 FEET) LOWER THAN THE STATION.
 HV6264'
 HV6264'AZIMUTH MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HV6264'NOS) DISK STAMPED---HAMILTON AZ MK 1934---SET INTO THE TOP OF A
 HV6264'SQUARE CONCRETE MONUMENT 30 CM (12 INCHES) ON SIDE FLUSH WITH THE
 HV6264'GROUND LOCATED 83.2 METERS (273 FEET) S FROM THE SOUTHEAST CORNER OF
 HV6264'MR. CHILTON CARMACHEL HOUSE, 26.8 METERS (88 FEET) SSE FROM THE
 HV6264'SOUTHEAST CORNER OF A SWIMMING POOL, 6.1 METERS (20 FEET) W FROM THE
 HV6264'WEST SHORE OF BROAD CREEK, AND 0.37 METER (1.2 FEET) W FROM A WITNESS
 HV6264'POST.
 HV6264'
 HV6264'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTH ON STATE HIGHWAY
 HV6264'579 FOR 0.05 MILE TO A SIDE ROAD LEFT.  TURN LEFT AND GO EAST ON A
 HV6264'GRAVELED DRIVE FOR 0.25 MILE TO MR. CARMICHELS HOME ON THE RIGHT AND
 HV6264'THE AZIMUTH JUST SOUTH OF THE HOUSE.
 HV6264
 HV6264                          STATION RECOVERY (1987)
 HV6264
 HV6264'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HV6264'THE DESIGNATED MARK WAS RECOVERED AS PREVIOUSLY DESCRIBED.
 HV6264'THE STATION MARK, REFERENCE MARKS ONE AND TWO ALONG WITH THE
 HV6264'AZIMUTH MARK WERE RECOVERED AND FOUND IN GOOD CONDITION AS
 HV6264'DESCRIBED IN THE MOST RECENT INFORMATION AVAILABLE WITH THE
 HV6264'FOLLOWING CHANGES. A SHORTER DISTANCE OF 0.015 METERS OF 0.05 FT
 HV6264'WAS NOTED TO REFERENCE MARK THREE. ALL OTHER DISTANCES AND
 HV6264'DIRECTIONS WERE WITHIN CLOSE AGREEMENT WITH THE MOST RECENT
 HV6264'INFORMATION AVAILABLE. THE AZIMUTH MARK STILL REMAINED OBSTRUCTED
 HV6264'FROM THE STATION.  A NEW AZIMUTH MARK TWO WAS ESTABLISHED WHICH
 HV6264'SHOULD REMAIN VISIBLE FROM THE GROUND FOR SOME TIME. THE OLD
 HV6264'AZIMUTH MARK WAS ALLOWED TO REMAIN IN ITS ORIGINAL LOCATION. SEE
 HV6264'THE DESCRIPTION FOR STATION HAMILTON AZ MK 2.
 HV6264
 HV6264                          STATION RECOVERY (1999)
 HV6264
 HV6264'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HV6264'NOT RECOVERED, BELIEVED DESTROYED.  DISTANCES FROM REFERENCE MARKS
 HV6264'LOCATE POINT BELOW A PAVED SHOULDER.  SUB-SURFAFCE MARK NOT SEARCHED
 HV6264'FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 CX2849 ***********************************************************************
 CX2849  DESIGNATION -  HAMILTON RM 2
 CX2849  PID         -  CX2849
 CX2849  STATE/COUNTY-  MD/TALBOT
 CX2849  COUNTRY     -  US
 CX2849  USGS QUAD   -  CLAIBORNE (2016)
 CX2849
 CX2849                         *CURRENT SURVEY CONTROL
 CX2849  ______________________________________________________________________
 CX2849* NAD 83(1986) POSITION- 38 47 05.81   (N) 076 15 57.48   (W)   HD_HELD1
 CX2849* NAVD 88 ORTHO HEIGHT -     2.837 (meters)        9.31  (feet) ADJUSTED
 CX2849  ______________________________________________________________________
 CX2849  GEOID HEIGHT    -        -34.223 (meters)                     GEOID18
 CX2849  DYNAMIC HEIGHT  -          2.835 (meters)        9.30  (feet) COMP
 CX2849  MODELED GRAVITY -    980,048.9   (mgal)                       NAVD 88
 CX2849
 CX2849  VERT ORDER      -  SECOND    CLASS I
 CX2849
 CX2849.The horizontal coordinates were determined by differentially corrected
 CX2849.hand held GPS observations or other comparable positioning techniques
 CX2849.and have an estimated accuracy of +/- 3 meters.
 CX2849
 CX2849.The orthometric height was determined by differential leveling and
 CX2849.adjusted by the NATIONAL GEODETIC SURVEY
 CX2849.in September 2004.
 CX2849
 CX2849.Significant digits in the geoid height do not necessarily reflect accuracy.
 CX2849.GEOID18 height accuracy estimate available here.
 CX2849
 CX2849.Click photographs - Photos may exist for this station.
 CX2849
 CX2849.The dynamic height is computed by dividing the NAVD 88
 CX2849.geopotential number by the normal gravity value computed on the
 CX2849.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 CX2849.degrees latitude (g = 980.6199 gals.).
 CX2849
 CX2849.The modeled gravity was interpolated from observed gravity values.
 CX2849
 CX2849;                    North         East    Units  Estimated Accuracy
 CX2849;SPC MD       -   124,390.0     463,774.9     MT  (+/- 3 meters HH1 GPS) 
 CX2849
 CX2849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9004493673(NAD 83)
 CX2849
 CX2849                          SUPERSEDED SURVEY CONTROL
 CX2849
 CX2849.No superseded survey control is available for this station.
 CX2849
 CX2849_MARKER: DR = REFERENCE MARK DISK
 CX2849_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 CX2849_STAMPING: HAMILTON 1934 NO 2
 CX2849_MARK LOGO: CGS
 CX2849_MAGNETIC: O = OTHER; SEE DESCRIPTION
 CX2849_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 CX2849+STABILITY: SURFACE MOTION
 CX2849_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 CX2849+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 CX2849
 CX2849  HISTORY     - Date     Condition        Report By
 CX2849  HISTORY     - 1934     MONUMENTED       CGS
 CX2849  HISTORY     - 19991213 GOOD             MDSHA
 CX2849
 CX2849                          STATION DESCRIPTION
 CX2849
 CX2849'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 CX2849'THE MARK IS LOCATED ABOUT 2.2 MI (3.54 KM) WEST OF ST MICHAELS, 1.7 MI
 CX2849'(2.74 KM) EAST-SOUTHEAST OF WITTMAN AND 1.1 MI (1.77 KM)
 CX2849'NORTH-NORTHEAST OF BOZMAN.  TO REACH THE MARK FROM THE POST OFFICE IN
 CX2849'ST. MICHAELS, PROCEED NORTHWEST ALONG STATE HIGHWAY 33 FOR 2.5 MILES
 CX2849'(4.0 KM) TO STATE HIGHWAY 579 LEADING SOUTH.  TURN LEFT AND PROCEED
 CX2849'SOUTH ALONG STATE HIGHWAY 579 FOR 2.1 MILES (3.4 KM) TO THE MARK ON
 CX2849'THE RIGHT.  IT IS 139.0 FEET (42.4 M) WEST OF THE CENTER LINE OF THE
 CX2849'HIGHWAY, 117.0 FEET (35.7 M) WEST-SOUTHWEST OF POWER POLE NUMBER 57-38
 CX2849'AND 1.7 FEET (0.5 M) EAST OF A METAL WITNESS POST. IT IS A CGS RM DISK
 CX2849'SET IN THE TOP OF A 12 INCH (30 CM) SQUARE CONCRETE MONUMENT FLUSH
 CX2849'WITH THE GROUND AND 2 FEET (0.6 M) LOWER THAN THE SURFACE OF THE
 CX2849'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 CX2850 ***********************************************************************
 CX2850  DESIGNATION -  HAMILTON RM 3
 CX2850  PID         -  CX2850
 CX2850  STATE/COUNTY-  MD/TALBOT
 CX2850  COUNTRY     -  US
 CX2850  USGS QUAD   -  CLAIBORNE (2016)
 CX2850
 CX2850                         *CURRENT SURVEY CONTROL
 CX2850  ______________________________________________________________________
 CX2850* NAD 83(1986) POSITION- 38 47 06.38   (N) 076 15 54.74   (W)   HD_HELD1
 CX2850* NAVD 88 ORTHO HEIGHT -     2.529 (meters)        8.30  (feet) ADJUSTED
 CX2850  ______________________________________________________________________
 CX2850  GEOID HEIGHT    -        -34.225 (meters)                     GEOID18
 CX2850  DYNAMIC HEIGHT  -          2.527 (meters)        8.29  (feet) COMP
 CX2850  MODELED GRAVITY -    980,048.9   (mgal)                       NAVD 88
 CX2850
 CX2850  VERT ORDER      -  SECOND    CLASS I
 CX2850
 CX2850.The horizontal coordinates were determined by differentially corrected
 CX2850.hand held GPS observations or other comparable positioning techniques
 CX2850.and have an estimated accuracy of +/- 3 meters.
 CX2850
 CX2850.The orthometric height was determined by differential leveling and
 CX2850.adjusted by the NATIONAL GEODETIC SURVEY
 CX2850.in September 2004.
 CX2850
 CX2850.Significant digits in the geoid height do not necessarily reflect accuracy.
 CX2850.GEOID18 height accuracy estimate available here.
 CX2850
 CX2850.Click photographs - Photos may exist for this station.
 CX2850
 CX2850.The dynamic height is computed by dividing the NAVD 88
 CX2850.geopotential number by the normal gravity value computed on the
 CX2850.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 CX2850.degrees latitude (g = 980.6199 gals.).
 CX2850
 CX2850.The modeled gravity was interpolated from observed gravity values.
 CX2850
 CX2850;                    North         East    Units  Estimated Accuracy
 CX2850;SPC MD       -   124,408.2     463,840.9     MT  (+/- 3 meters HH1 GPS) 
 CX2850
 CX2850_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9011193690(NAD 83)
 CX2850
 CX2850                          SUPERSEDED SURVEY CONTROL
 CX2850
 CX2850.No superseded survey control is available for this station.
 CX2850
 CX2850_MARKER: DR = REFERENCE MARK DISK
 CX2850_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 CX2850_STAMPING: HAMILTON 1934 NO 3 1979
 CX2850_MARK LOGO: CGS
 CX2850_PROJECTION: PROJECTING 15 CENTIMETERS
 CX2850_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 CX2850+STABILITY: SURFACE MOTION
 CX2850_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 CX2850+SATELLITE: SATELLITE OBSERVATIONS - December 13, 1999
 CX2850
 CX2850  HISTORY     - Date     Condition        Report By
 CX2850  HISTORY     - 1979     MONUMENTED       NGS
 CX2850  HISTORY     - 19991213 GOOD             MDSHA
 CX2850
 CX2850                          STATION DESCRIPTION
 CX2850
 CX2850'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 CX2850'THE MARK IS LOCATED ABOUT 2.2 MI (3.54 KM) WEST OF ST MICHAELS, 1.7 MI
 CX2850'(2.74 KM) EAST-SOUTHEAST OF WITTMAN AND 1.1 MI (1.77 KM)
 CX2850'NORTH-NORTHEAST OF BOZMAN.  TO REACH THE MARK FROM THE POST OFFICE IN
 CX2850'ST. MICHAELS, PROCEED NORTHWEST ALONG STATE HIGHWAY 33 FOR 2.6 MILES
 CX2850'(4.2 KM) TO STATE HIGHWAY 579 LEADING SOUTH.  TURN LEFT AND PROCEED
 CX2850'SOUTH ALONG STATE HIGHWAY 579 FOR 2.1 MILES (3.4 KM) TO THE MARK ON
 CX2850'THE LEFT.  IT IS 65.0 FEET (19.8 M) EAST OF THE CENTER LINE OF THE
 CX2850'HIGHWAY, 11.0 FEET (3.4 M) NORTH OF THE CENTER OF A DRIVE LEADING
 CX2850'EAST, 38.0 FEET (11.6 M) NORTHEAST OF POWER POLE NUMBER 1-27975-08607
 CX2850'AND 1.5 FEET (0.5 M) SOUTH OF A METAL WITNESS POST.  IT A CGS DISK SET
 CX2850'IN THE TOP OF A 12-INCH (30 CM) SQUARE CONCRETE POST PROJECTING 6
 CX2850'INCHES (15 CM) ABOVE THE GROUND AND 2 FEET (0.6 M) LOWER THAN THE
 CX2850'SURFACE OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6601 ***********************************************************************
 HV6601  DESIGNATION -  HAMMETT 1909
 HV6601  PID         -  HV6601
 HV6601  STATE/COUNTY-  MD/ST MARYS
 HV6601  COUNTRY     -  US
 HV6601  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6601
 HV6601                         *CURRENT SURVEY CONTROL
 HV6601  ______________________________________________________________________
 HV6601* NAD 83(1993) POSITION- 38 12 44.00537(N) 076 27 48.60416(W)   ADJUSTED
 HV6601* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6601  ______________________________________________________________________
 HV6601  GEOID HEIGHT    -        -34.599 (meters)                     GEOID18
 HV6601  LAPLACE CORR    -         -6.02  (seconds)                    DEFLEC18
 HV6601  HORZ ORDER      -  THIRD
 HV6601
 HV6601.The horizontal coordinates were established by classical geodetic methods
 HV6601.and adjusted by the National Geodetic Survey in November 1994.
 HV6601
 HV6601.The orthometric height was scaled from a topographic map.
 HV6601
 HV6601.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6601.GEOID18 height accuracy estimate available here.
 HV6601
 HV6601.Click photographs - Photos may exist for this station.
 HV6601
 HV6601.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6601
 HV6601. The following values were computed from the NAD 83(1993) position.
 HV6601
 HV6601;                    North         East     Units Scale Factor Converg.
 HV6601;SPC MD       -    60,697.561   446,986.394   MT  1.00001643   +0 20 12.2
 HV6601;SPC MD       -   199,138.58  1,466,487.86   sFT  1.00001643   +0 20 12.2
 HV6601;UTM  18      - 4,230,374.424   371,876.377   MT  0.99980217   -0 54 19.5
 HV6601
 HV6601!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6601!SPC MD       -   1.00000532  x   1.00001643  =   1.00002175
 HV6601!UTM  18      -   1.00000532  x   0.99980217  =   0.99980749
 HV6601
 HV6601:                Primary Azimuth Mark                     Grid Az
 HV6601:SPC MD       -  SOAK                                     186 09 06.1
 HV6601:UTM  18      -  SOAK                                     187 23 37.8
 HV6601
 HV6601_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7187630374(NAD 83)
 HV6601
 HV6601|---------------------------------------------------------------------|
 HV6601| PID    Reference Object                     Distance      Geod. Az  |
 HV6601|                                                           dddmmss.s |
 HV6601| HV6599 SOAK                                APPROX. 0.7 KM 1862918.3 |
 HV6601|---------------------------------------------------------------------|
 HV6601
 HV6601                          SUPERSEDED SURVEY CONTROL
 HV6601
 HV6601  NAD 83(1991)-  38 12 44.00459(N)    076 27 48.60742(W) AD(       ) 3
 HV6601  NAD 83(1986)-  38 12 44.00487(N)    076 27 48.62065(W) AD(       ) 3
 HV6601  NAD 27      -  38 12 43.64700(N)    076 27 49.84300(W) AD(       ) 3
 HV6601  USSD        -  38 12 44.03100(N)    076 27 49.54700(W) AD(       ) 3
 HV6601
 HV6601.Superseded values are not recommended for survey control.
 HV6601
 HV6601.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6601.See file dsdata.pdf to determine how the superseded data were derived.
 HV6601
 HV6601_MARKER: H = DRILL HOLE
 HV6601_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6601_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6601+STABILITY: SURFACE MOTION
 HV6601
 HV6601  HISTORY     - Date     Condition        Report By
 HV6601  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6601  HISTORY     - 1942     GOOD             CGS
 HV6601  HISTORY     - 1942     GOOD             CGS
 HV6601
 HV6601                          STATION DESCRIPTION
 HV6601
 HV6601'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6601'STATION IS ON THE EASTERN SHORE OF UPPER ST. MARYS RIVER, ON A
 HV6601'PROMINENT POINT ABOUT 3/8 MILE E OF LYNCH ISLAND AND 5/8 MILE NW
 HV6601'OF MARTIN POINT, AT EDGE OF CULTIVATED FIELD, ABOUT 4 FEET ABOVE
 HV6601'HIGH WATER, 8 YARDS N OF SHORE, 30 YARDS E OF SHORE ON LEFT LINE
 HV6601'OF SLOUGH, 7 YARDS E OF A SINGLE CEDAR TREE, AND 90 YARDS SE OF
 HV6601'TREES ON OTHER SIDE OF POINT.
 HV6601'
 HV6601'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6601'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6601'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6601'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6601'POST.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE
 HV6601'AS FOLLOWS--NAIL IN BLAZE IN 3-INCH CEDAR TREE, 6.21 METERS
 HV6601'(20.4 FEET), S 58 DEG 07 MIN W.  CHIMNEY OUTSIDE OF MC COYS HOUSE,
 HV6601'3/8 MILE, N 78 DEG 02 MIN W.  LEFT CHIMNEY OF HAMMETTS HOUSE, 3/8
 HV6601'MILE, N 30 DEG 43 MIN E.  RIGHT PEAK OF ROOF BETWEEN 2 CHIMNEYS
 HV6601'OF SANDERS HOUSE, 1 MILE, N 38 DEG 27 MIN E.  WINDMILL NEAR
 HV6601'BERRILL, 1 1/2 MILES, S 75 DEG 09 MIN E.  LEFT CHIMNEY OF BERRILLS
 HV6601'HOUSE, 1 1/2 MILES, S 72 DEG 24 MIN E.  NAIL IN BLAZE IN SMALL
 HV6601'PERSIMMON TREE, 8.39 METERS (27.53 FEET), S 66 DEG 12 MIN E.
 HV6601'NEAR PEAK OF ROOF BETWEEN 2 CHIMNEYS OF FREEMANS HOUSE,
 HV6601'1-1/2 MILES, S 64 DEG 55 MIN E.  WINDMILL AT ST. MARYS SEMINARY,
 HV6601'2-1/4 MILES, S 44 DEG 17 MIN E.  CHIMNEY ON NEAR END OF GARRETTS
 HV6601'HOUSE, 1-7/8 MILES, S 36 DEG 11 MIN E.  CHIMNEY OUTSIDE OF
 HV6601'HYATTS HOUSE, 1 MILE, S 27 DEG 01 MIN E.
 HV6601
 HV6601                          STATION RECOVERY (1942)
 HV6601
 HV6601'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6601'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE ORIGINAL DESCRIPTION--
 HV6601'
 HV6601'(1) DELETE 8 YARDS N OF SHORE SINCE IT IS NOW 1 FOOT.
 HV6601'
 HV6601'(2) DELETE 7 YARDS E OF A SINGLE CEDAR TREE, AND 90 YARDS SE
 HV6601'OF TREES ON OTHER SIDE OF POINT SINCE THEY NO LONGER EXIST.
 HV6601'
 HV6601'(3) DELETE WITH TOP PROJECTING ABOUT 4 INCHES SINCE IT IS
 HV6601'FLUSH WITH THE SURFACE OF THE GROUND.
 HV6601'
 HV6601'(4) DELETE NAIL IN BLAZE IN 2-INCH CEDAR TREE 20.4 FEET SINCE
 HV6601'THE TREE NO LONGER EXISTS.
 HV6601'
 HV6601'(5) DELETE NAIL IN BLAZE IN SMALL PERSIMMON TREE 27.53 FEET
 HV6601'SINCE IT NO LONGER EXISTS.
 HV6601'
 HV6601'THE STATION IS LOCATED ON THE EASTERN SHORE OF UPPER ST. MARYS
 HV6601'RIVER, ON A PROMINENT POINT ABOUT 3/8 MILE E OF LYNCH ISLAND AND
 HV6601'5/8 MILE NW OF MARTIN POINT, AT EDGE OF PASTURE FIELD, 1 FOOT N
 HV6601'OF SHORE, 53 FEET W OF CLUMP OF BUSHES, 88 FEET E OF EXTREME END
 HV6601'OF POINT, AND 4 FEET ABOVE HIGH WATER.  TO REACH THE STATION
 HV6601'FROM GREAT MILLS GO S 3.2 MILES ON HIGHWAY 5 FROM POST OFFICE AT
 HV6601'GREAT MILLS, TURN W AT A SIGN TO GLEN MARY FARM AND GO 1 MILE
 HV6601'TO THE STATION.
 HV6601'
 HV6601'THE STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6601'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, WHICH IS AN 8-INCH
 HV6601'SQUARE CONCRETE MONUMENT, 2 FEET LONG, WHICH IS FLUSH WITH THE
 HV6601'GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTERSUNK IN
 HV6601'THE TOP OF THE MONUMENT.  THE STATION IS IN GOOD CONDITION.
 HV6601
 HV6601                          STATION RECOVERY (1942)
 HV6601
 HV6601'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV6601'ORIGINAL DESCRIPTION OF THIS STATION IS NOW OBSOLETE EXCEPT AS
 HV6601'TO GENERAL LOCATION.  THE STATION IS MARKED WITH THE STANDARD
 HV6601'MONUMENT OF THE MARYLAND SHELL FISH COMMISSION AND WHEN FOUND
 HV6601'WAS STILL FIRMLY IN GROUND AND TOP LEVEL WITH SURFACE.
 HV6601'
 HV6601'REACHED FROM LEONARDSTOWN BY GOING SE ON HIGHWAY 5 FOR 9.4
 HV6601'MILES TO GREAT MILLS, THENCE CONTINUE ON SAME ROAD FOR 2.75
 HV6601'MILES, TURN RIGHT ON DIRT ROAD AS PER SIGN (GLEN MARY).  (THIS
 HV6601'POINT IS 1.15 MILES BEFORE ARRIVING AT PARK HALL POST OFFICE.) GO
 HV6601'0.1 (ENTRANCE TO GLEN MARY FARM), CONTINUE STRAIGHT AHEAD FOR
 HV6601'0.6 MILE TO END OF ROAD AT PASTURE GATE, GO THROUGH GATE AND GO
 HV6601'LEFT, ABOUT SW, ACROSS PASTURE FOR 0.3 MILE TO STATION WHICH IS
 HV6601'ON THE MOST PROMINENT POINT OF LAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0200 ***********************************************************************
 HV0200  DESIGNATION -  HAMMOND
 HV0200  PID         -  HV0200
 HV0200  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0200  COUNTRY     -  US
 HV0200  USGS QUAD   -  ANNAPOLIS (2016)
 HV0200
 HV0200                         *CURRENT SURVEY CONTROL
 HV0200  ______________________________________________________________________
 HV0200* NAD 83(1986) POSITION- 38 58 52.     (N) 076 29 18.     (W)   SCALED
 HV0200* NAVD 88 ORTHO HEIGHT -     7.476 (meters)       24.53  (feet) ADJUSTED
 HV0200  ______________________________________________________________________
 HV0200  GEOID HEIGHT    -        -33.344 (meters)                     GEOID18
 HV0200  DYNAMIC HEIGHT  -          7.472 (meters)       24.51  (feet) COMP
 HV0200  MODELED GRAVITY -    980,074.7   (mgal)                       NAVD 88
 HV0200
 HV0200  VERT ORDER      -  FIRST     CLASS I
 HV0200
 HV0200.The horizontal coordinates were scaled from a map and have
 HV0200.an estimated accuracy of +/- 6 seconds.
 HV0200
 HV0200.The orthometric height was determined by differential leveling and
 HV0200.adjusted by the NATIONAL GEODETIC SURVEY
 HV0200.in June 1991.
 HV0200
 HV0200.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0200.GEOID18 height accuracy estimate available here.
 HV0200
 HV0200.Click photographs - Photos may exist for this station.
 HV0200
 HV0200.The dynamic height is computed by dividing the NAVD 88
 HV0200.geopotential number by the normal gravity value computed on the
 HV0200.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0200.degrees latitude (g = 980.6199 gals.).
 HV0200
 HV0200.The modeled gravity was interpolated from observed gravity values.
 HV0200
 HV0200;                    North         East    Units  Estimated Accuracy
 HV0200;SPC MD       -   146,030.      444,330.      MT  (+/- 180 meters Scaled)
 HV0200
 HV0200_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ710157(NAD 83)
 HV0200
 HV0200                          SUPERSEDED SURVEY CONTROL
 HV0200
 HV0200  NGVD 29 (11/26/84)    7.720  (m)           25.33   (f) ADJUSTED    1 1
 HV0200
 HV0200.Superseded values are not recommended for survey control.
 HV0200
 HV0200.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0200.See file dsdata.pdf to determine how the superseded data were derived.
 HV0200
 HV0200_MARKER: DE = TRAVERSE STATION DISK
 HV0200_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0200_STAMPING: HAMMOND 1945
 HV0200_MARK LOGO: USN
 HV0200_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0200+STABILITY: SURFACE MOTION
 HV0200
 HV0200  HISTORY     - Date     Condition        Report By
 HV0200  HISTORY     - 1945     MONUMENTED       USN
 HV0200  HISTORY     - 1971     GOOD             NGS
 HV0200  HISTORY     - 20000217 MARK NOT FOUND   USPSQD
 HV0200
 HV0200                          STATION DESCRIPTION
 HV0200
 HV0200'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0200'AT ANNAPOLIS.
 HV0200'AT ANNAPOLIS, ABOUT 0.15 MILE NORTHEAST ALONG MARYLAND AVENUE
 HV0200'FROM STATE CIRCLE, ABOUT 0.05 MILE SOUTHWEST OF GATE NUMBER
 HV0200'3 AT THE U.S. NAVAL ACADEMY, 5.0 FEET WEST OF THE WEST CORNER OF
 HV0200'HOUSE NUMBER 15.  MARYLAND AVENUE, 3.6 FEET SOUTHEAST OF THE
 HV0200'SOUTHEAST CURB OF THE AVENUE, 3.6 FEET NORTHEAST OF THE NORTHEAST
 HV0200'CURB OF KING GEORGE STREET, AND SET IN THE TOP OF A CONCRETE
 HV0200'POST WITH A BRICK SIDEWALK BUILT AROUND IT.
 HV0200
 HV0200                          STATION RECOVERY (2000)
 HV0200
 HV0200'RECOVERY NOTE BY US POWER SQUADRON 2000
 HV0200'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6025 ***********************************************************************
 JV6025  DESIGNATION -  HAMMOND
 JV6025  PID         -  JV6025
 JV6025  STATE/COUNTY-  MD/BALTIMORE
 JV6025  COUNTRY     -  US
 JV6025  USGS QUAD   -  REISTERSTOWN (2016)
 JV6025
 JV6025                         *CURRENT SURVEY CONTROL
 JV6025  ______________________________________________________________________
 JV6025* NAD 83(1991) POSITION- 39 28 30.64823(N) 076 49 42.62918(W)   ADJUSTED
 JV6025* NAVD 88 ORTHO HEIGHT -   221.    (meters)      725.    (feet) SCALED
 JV6025  ______________________________________________________________________
 JV6025  GEOID HEIGHT    -        -32.080 (meters)                     GEOID18
 JV6025  LAPLACE CORR    -         -1.77  (seconds)                    DEFLEC18
 JV6025  HORZ ORDER      -  FIRST
 JV6025
 JV6025.The horizontal coordinates were established by classical geodetic methods
 JV6025.and adjusted by the National Geodetic Survey in January 1992.
 JV6025
 JV6025.The orthometric height was scaled from a topographic map.
 JV6025
 JV6025.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6025.GEOID18 height accuracy estimate available here.
 JV6025
 JV6025.Click photographs - Photos may exist for this station.
 JV6025
 JV6025.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6025
 JV6025. The following values were computed from the NAD 83(1991) position.
 JV6025
 JV6025;                    North         East     Units Scale Factor Converg.
 JV6025;SPC MD       -   200,773.123   414,755.907   MT  1.00000450   +0 06 27.5
 JV6025;SPC MD       -   658,703.15  1,360,745.00   sFT  1.00000450   +0 06 27.5
 JV6025;UTM  18      - 4,371,105.736   342,725.599   MT  0.99990455   -1 09 45.7
 JV6025
 JV6025!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6025!SPC MD       -   0.99997040  x   1.00000450  =   0.99997490
 JV6025!UTM  18      -   0.99997040  x   0.99990455  =   0.99987495
 JV6025
 JV6025:                Primary Azimuth Mark                     Grid Az
 JV6025:SPC MD       -  CROSS                                    188 42 51.2
 JV6025:UTM  18      -  CROSS                                    189 59 04.4
 JV6025
 JV6025_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4272571105(NAD 83)
 JV6025
 JV6025|---------------------------------------------------------------------|
 JV6025| PID    Reference Object                     Distance      Geod. Az  |
 JV6025|                                                           dddmmss.s |
 JV6025| JV1293 HAMMOND RM 3 RESET                   11.866 METERS 02926     |
 JV6025| CA9487 HAMMOND RM 1 AZIMUTH                  4.023 METERS 10300     |
 JV6025| JV1291 HAMMOND RM 2                         39.145 METERS 12959     |
 JV6025| JV5658 WCAO SOUTH RADIO MAST               APPROX.13.7 KM 1361427.5 |
 JV6025| JV5641 MT HOPE CUPOLA                      APPROX.17.4 KM 1431859.8 |
 JV6025| JV6033 PLEASANT HILL METRO WATER TANK      APPROX. 6.1 KM 1470722.4 |
 JV6025| JV5636 SUDBROOK PARK WBAL N RAD TOWER      APPROX.14.8 KM 1472747.3 |
 JV6025| JV6041 MT WILSON SANITORIUM TANK           APPROX.11.6 KM 1514103.2 |
 JV6025| JV6037 WBAL WEST RADIO MAST                APPROX.12.0 KM 1563725.6 |
 JV6025| JV6026 REISTERSTOWN METRO WATER TANK       149.161 METERS 17030     |
 JV6025| JV6027 CROSS                               APPROX. 6.6 KM 1884918.7 |
 JV6025| CA9488 HAMMOND RM 3                                       27433     |
 JV6025|---------------------------------------------------------------------|
 JV6025
 JV6025                          SUPERSEDED SURVEY CONTROL
 JV6025
 JV6025  NAD 83(1986)-  39 28 30.64598(N)    076 49 42.63581(W) AD(       ) 1
 JV6025  NAD 27      -  39 28 30.26900(N)    076 49 43.70700(W) AD(       ) 1
 JV6025
 JV6025.Superseded values are not recommended for survey control.
 JV6025
 JV6025.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6025.See file dsdata.pdf to determine how the superseded data were derived.
 JV6025
 JV6025_MARKER: DS = TRIANGULATION STATION DISK
 JV6025_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6025_STAMPING: HAMMOND 1933
 JV6025_MARK LOGO: CGS
 JV6025_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6025+STABILITY: SURFACE MOTION
 JV6025
 JV6025  HISTORY     - Date     Condition        Report By
 JV6025  HISTORY     - 1933     MONUMENTED       CGS
 JV6025  HISTORY     - 1935     GOOD             CGS
 JV6025  HISTORY     - 1938     GOOD             CGS
 JV6025  HISTORY     - 1940     GOOD             CGS
 JV6025  HISTORY     - 1943     GOOD             CGS
 JV6025  HISTORY     - 1959     SEE DESCRIPTION  MDDT
 JV6025  HISTORY     - 20020208 MARK NOT FOUND   STVINC
 JV6025
 JV6025                          STATION DESCRIPTION
 JV6025
 JV6025'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV6025'THE STATION IS IN THE N END OF REISTERSTOWN, 0.3 MILE N OF
 JV6025'JUNCTION OF ROUTE 140 AND HAMMOND ROAD, 142 FEET SE OF CENTER
 JV6025'LINE OF HAMMOND ROAD, AND 39 FEET NE OF DOVER STREET, DIRECTLY
 JV6025'OPPOSITE THE THIRD LARGE OAK FROM THE CORNER.  DOVER STREET IS
 JV6025'APPARENTLY PLANNED TO BE A BOULEVARD, ONE-HALF OF WHICH IS PAVED
 JV6025'AT PRESENT.  IF THIS IS DONE, THE STATION WILL VERY PROBABLY BE
 JV6025'IN THE CENTER STRIP OF UNPAVED GROUND.
 JV6025'
 JV6025'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE BRONZE DISKS SET
 JV6025'IN CONCRETE.
 JV6025'
 JV6025'REFERENCE MARK NO.1 IS 8 YARDS S OF THE CENTER LINE OF DOVER
 JV6025'ROAD, AT THE W END OF THE FIRST CURVE IN THE ROAD, 9 YARDS N OF
 JV6025'A LARGE SIGN, AND 3 YARDS SW OF A TELEPHONE POLE.
 JV6025'
 JV6025'REFERENCE MARK NO.2 IS 23 FEET SW OF THE CENTER LINE OF DOVER
 JV6025'STREET, 10 FEET SE OF LINE ALONG SE SIDE OF HOUSE.
 JV6025'
 JV6025'REFERENCE MARK NO.3 IS 40 FEET SE OF CENTER LINE OF HAMMOND
 JV6025'ROAD, 32 FEET NE OF DOVER STREET, AND 33.3 FEET N OF A HIGHWAY
 JV6025'STOP SIGN.
 JV6025'
 JV6025'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV6025
 JV6025                          STATION RECOVERY (1935)
 JV6025
 JV6025'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (CFM)
 JV6025'I FOUND ALL THE MARKERS IN GOOD CONDITION AND WITHOUT GREAT
 JV6025'DIFFICULTY.  FOR THE SAKE OF THOSE WHO MAY USE THESE DIRECTIONS
 JV6025'LATER, HAMMOND ROAD IS NOW MARKED HANOVER ROAD, IN FACT, NO
 JV6025'ONE SEEMED TO KNOW WHERE HAMMOND ROAD WAS UNTIL I ASKED ONE OF
 JV6025'THE LOCAL INHABITANTS WHERE YOUR TOWER HAD BEEN ERECTED.  ANOTHER
 JV6025'DIFFICULTY WAS THAT DOVER STREET, OR DOVER ROAD, IS NOW MARKED
 JV6025'BUTLER ROAD.  APPARENTLY DOVER ROAD WAS AN OLD NAME WHICH WAS
 JV6025'FORMERLY USED.
 JV6025
 JV6025                          STATION RECOVERY (1938)
 JV6025
 JV6025'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV6025'THE STATION, AZIMUTH AND REFERENCE MARKS RECOVERED AS
 JV6025'NOTED.  ORIGINAL DESCRIPTION - GOOD.
 JV6025'
 JV6025'CORRECTION - HAMMOND ROAD IS HANOVER ROAD.  LINE TO MOORE IS
 JV6025'OBSTRUCTED, 90-FOOT TOWER AT EACH STATION.  REFERENCE MARK NO.3
 JV6025'HAS BEEN DESTROYED ON ACCOUNT OF RELOCATION OF HANOVER ROAD.  A
 JV6025'NEW REFERENCE MONUMENT, USING THE SAME TABLET MARKED
 JV6025'HAMMOND - R.M. NO.3 - 1933, WAS ESTABLISHED MAY 2, 1938.
 JV6025
 JV6025                          STATION RECOVERY (1940)
 JV6025
 JV6025'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (CFM)
 JV6025'FROM LETTER--MR. CARROLL F. MERRIAM, PA., POWER AND LIGHT
 JV6025'COMPANY, BALTIMORE, MD., DATED 8/20/40.
 JV6025'
 JV6025'STATION MARKER AND REFERENCE MARK NO.2 FOUND IN GOOD CONDITION,
 JV6025'ALTHOUGH STATION IS NOW BADLY OVERGROWN WITH WEEDS.  WAS NOT
 JV6025'ABLE TO FIND REFERENCE MARK NO.3 ALTHOUGH I HAD FOUND IT WITHOUT
 JV6025'DIFFICULTY PREVIOUSLY.  FINALLY SET UP INSTRUMENT AND SIGHTING
 JV6025'FROM REFERENCE MARK NO.2 SAW THAT IN WIDENING DOVER STREET WHERE
 JV6025'IT ENTERED HANOVER ROAD, GIVEN AS HAMMOND ROAD IN DIRECTIONS,
 JV6025'THE REFERENCE MARK HAD APPARENTLY BEEN REMOVED.
 JV6025
 JV6025                          STATION RECOVERY (1943)
 JV6025
 JV6025'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV6025'THE STATION, AZIMUTH MARK AND REFERENCE MARKS WERE RECOVERED AS
 JV6025'DESCRIBED IN THE 1938 DESCRIPTION.  FOLLOWING IS A COMPLETE
 JV6025'DESCRIPTION.
 JV6025'
 JV6025'THE STATION IS LOCATED IN THE N END OF TOWN
 JV6025'OF REISTERSTOWN, 0.3 MILE N OF THE JUNCTION OF U.S. HIGHWAY 140
 JV6025'AND STATE HIGHWAY 30, ON PROPERTY OWNED BY HERBERT HAMMOND.  IT
 JV6025'IS 142 FEET SE OF THE CENTER OF HANOVER ROAD, 39 FEET N OF THE
 JV6025'CENTER OF BUTLER ROAD.  IT IS STAMPED HAMMOND 1933 AND PROJECTS 3
 JV6025'INCHES.
 JV6025'
 JV6025'REFERENCE MARK NO.1 (AZIMUTH MARK) IS 0.25 MILE E OF THE
 JV6025'STATION AT THE W END OF THE FIRST CURVE IN THE BUTLER ROAD.  IT
 JV6025'IS 8 FEET SW OF A TELEPHONE POLE, AND 24 FEET S OF THE CENTER OF
 JV6025'THE BUTLER ROAD.  IT IS STAMPED HAMMOND NO.1 1933 AND PROJECTS
 JV6025'2 INCHES.
 JV6025'
 JV6025'REFERENCE MARK NO.2 IS SE OF THE STATION, ACROSS BUTLER ROAD
 JV6025'JUST E OF A PRIVATE DRIVEWAY.  IT IS STAMPED HAMMOND NO.2 1933
 JV6025'AND PROJECTS 2 INCHES.
 JV6025'
 JV6025'REFERENCE MARK NO.3 IS N OF THE STATION AT THE S EDGE OF A
 JV6025'HEDGE-ROW.  IT IS STAMPED HAMMOND NO.3 1933 AND IS 3 INCHES
 JV6025'BELOW THE SURFACE OF THE GROUND).
 JV6025'
 JV6025'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT CROSS 1933.
 JV6025'
 JV6025'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT ELDER.
 JV6025'
 JV6025'A 50-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT BIRD.
 JV6025
 JV6025                          STATION RECOVERY (1959)
 JV6025
 JV6025'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1959
 JV6025'STATION AND R.M. 1 WERE DESTROYED.  HAMMOND 2 1959 AND A NEW
 JV6025'AZIMUTH MARK WERE SET.
 JV6025
 JV6025                          STATION RECOVERY (2002)
 JV6025
 JV6025'RECOVERY NOTE BY STV INCORPORATED 2002
 JV6025'HAMMOND RM 3 AND RM 2 RECOVERED 2/08/02. HAMMOND RM 2 WILL BE
 JV6025'DESTROYED BASED ON HIGHWAY WIDENING PLANS PREPARED BY STV FOR THE
 JV6025'MARYLAND STATE HIGHWAY ADMINISTRATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6542 ***********************************************************************
 JV6542  DESIGNATION -  HAMMOND 3
 JV6542  PID         -  JV6542
 JV6542  STATE/COUNTY-  MD/BALTIMORE
 JV6542  COUNTRY     -  US
 JV6542  USGS QUAD   -  REISTERSTOWN (2016)
 JV6542
 JV6542                         *CURRENT SURVEY CONTROL
 JV6542  ______________________________________________________________________
 JV6542* NAD 83(1991) POSITION- 39 28 30.72219(N) 076 49 40.04753(W)   ADJUSTED
 JV6542* NAVD 88 ORTHO HEIGHT -   220.04  (meters)      721.9   (feet) RESET
 JV6542  ______________________________________________________________________
 JV6542  GEOID HEIGHT    -        -32.081 (meters)                     GEOID18
 JV6542  LAPLACE CORR    -         -1.80  (seconds)                    DEFLEC18
 JV6542  HORZ ORDER      -  THIRD
 JV6542  VERT ORDER      -  THIRD
 JV6542
 JV6542.The horizontal coordinates were established by classical geodetic methods
 JV6542.and adjusted by the National Geodetic Survey in January 1992.
 JV6542
 JV6542.The orthometric height was computed from unverified reset data.
 JV6542
 JV6542.No vertical observational check was made to the station.
 JV6542
 JV6542.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6542.GEOID18 height accuracy estimate available here.
 JV6542
 JV6542.Click photographs - Photos may exist for this station.
 JV6542
 JV6542.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6542
 JV6542. The following values were computed from the NAD 83(1991) position.
 JV6542
 JV6542;                    North         East     Units Scale Factor Converg.
 JV6542;SPC MD       -   200,775.520   414,817.607   MT  1.00000451   +0 06 29.1
 JV6542;SPC MD       -   658,711.02  1,360,947.43   sFT  1.00000451   +0 06 29.1
 JV6542;UTM  18      - 4,371,106.764   342,787.331   MT  0.99990431   -1 09 44.1
 JV6542
 JV6542!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6542!SPC MD       -   0.99997051  x   1.00000451  =   0.99997502
 JV6542!UTM  18      -   0.99997051  x   0.99990431  =   0.99987482
 JV6542
 JV6542:                Primary Azimuth Mark                     Grid Az
 JV6542:SPC MD       -  HAMMOND 3 AZ MK                          289 40 40.4
 JV6542:UTM  18      -  HAMMOND 3 AZ MK                          290 56 53.6
 JV6542
 JV6542_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4278771106(NAD 83)
 JV6542
 JV6542|---------------------------------------------------------------------|
 JV6542| PID    Reference Object                     Distance      Geod. Az  |
 JV6542|                                                           dddmmss.s |
 JV6542| JV6543 HAMMOND 3 RM 4                       34.575 METERS 15059     |
 JV6542| JV6026 REISTERSTOWN METRO WATER TANK       153.933 METERS 19357     |
 JV6542| JV1291 HAMMOND RM 2                         41.931 METERS 22908     |
 JV6542| JV1292 HAMMOND 2                            23.750 METERS 24957     |
 JV6542| JV6577 HAMMOND 3 AZ MK                     426.484 METERS 2894709.5 |
 JV6542|---------------------------------------------------------------------|
 JV6542
 JV6542                          SUPERSEDED SURVEY CONTROL
 JV6542
 JV6542  NAD 83(1986)-  39 28 30.72054(N)    076 49 40.05415(W) AD(       ) 3
 JV6542  NGVD 29 (11/18/05)  220.27   (m)          722.7    (f) RESET       3  
 JV6542  NGVD 29             220.26   (m)          722.6    (f) LEVELING    3  
 JV6542
 JV6542.Superseded values are not recommended for survey control.
 JV6542
 JV6542.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6542.See file dsdata.pdf to determine how the superseded data were derived.
 JV6542
 JV6542_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6542_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6542_STAMPING: HAMMOND 3 1985
 JV6542_MARK LOGO: NGS
 JV6542_PROJECTION: PROJECTING 4 CENTIMETERS
 JV6542_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6542_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6542+STABILITY: SURFACE MOTION
 JV6542
 JV6542  HISTORY     - Date     Condition        Report By
 JV6542  HISTORY     - 1985     MONUMENTED       NGS
 JV6542  HISTORY     - 20200317 GOOD             WTBALL
 JV6542  HISTORY     - 20210117 GOOD             WTBALL
 JV6542
 JV6542                          STATION DESCRIPTION
 JV6542
 JV6542'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 JV6542'IN REISTERSTOWN.
 JV6542'0.7 KM (0.45 MI) WEST ALONG STATE HIGHWAY 128 (BUTLER ROAD) FROM THE
 JV6542'POST OFFICE AT GLYNDON, 108.2 M (355.0 FT) EAST FROM THE CENTER OF
 JV6542'STATE HIGHWAY 30, 7.2 M (23.6 FT) SOUTH FROM THE SOUTHWEST CORNER OF
 JV6542'A HOUSE NUMBERED 13 BUTLER ROAD, 9.7 M (31.8 FT) SOUTHWEST FROM THE
 JV6542'SOUTHEAST CORNER OF THE HOUSE, 12.7 M (41.7 FT) NORTHEAST FROM A
 JV6542'POWERLINE POLE NUMBERED 820931 AND 5.6 M (18.4 FT) NORTH FROM A
 JV6542'ACCESS ROAD.
 JV6542'THE MARK IS 1.5 M ABOVE ACCESS ROAD.
 JV6542
 JV6542                          STATION RECOVERY (2020)
 JV6542
 JV6542'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV6542'RECOVERED IN GOOD CONDITION.
 JV6542
 JV6542                          STATION RECOVERY (2021)
 JV6542
 JV6542'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2021 (JMB)
 JV6542'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6577 ***********************************************************************
 JV6577  DESIGNATION -  HAMMOND 3 AZ MK
 JV6577  PID         -  JV6577
 JV6577  STATE/COUNTY-  MD/BALTIMORE
 JV6577  COUNTRY     -  US
 JV6577  USGS QUAD   -  REISTERSTOWN (2016)
 JV6577
 JV6577                         *CURRENT SURVEY CONTROL
 JV6577  ______________________________________________________________________
 JV6577* NAD 83(1991) POSITION- 39 28 35.40302(N) 076 49 56.83810(W)   ADJUSTED
 JV6577* NAVD 88 ORTHO HEIGHT -   213.4   (meters)      700.    (feet) VERTCON3
 JV6577  ______________________________________________________________________
 JV6577  GEOID HEIGHT    -        -32.078 (meters)                     GEOID18
 JV6577  LAPLACE CORR    -         -1.56  (seconds)                    DEFLEC18
 JV6577  HORZ ORDER      -  THIRD
 JV6577
 JV6577.The horizontal coordinates were established by classical geodetic methods
 JV6577.and adjusted by the National Geodetic Survey in January 1992.
 JV6577
 JV6577.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6577.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6577
 JV6577.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6577.GEOID18 height accuracy estimate available here.
 JV6577
 JV6577.Click photographs - Photos may exist for this station.
 JV6577
 JV6577.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6577
 JV6577. The following values were computed from the NAD 83(1991) position.
 JV6577
 JV6577;                    North         East     Units Scale Factor Converg.
 JV6577;SPC MD       -   200,919.132   414,416.028   MT  1.00000474   +0 06 18.6
 JV6577;SPC MD       -   659,182.19  1,359,629.92   sFT  1.00000474   +0 06 18.6
 JV6577;UTM  18      - 4,371,259.228   342,389.074   MT  0.99990585   -1 09 54.9
 JV6577
 JV6577!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6577!SPC MD       -   0.99997155  x   1.00000474  =   0.99997629
 JV6577!UTM  18      -   0.99997155  x   0.99990585  =   0.99987741
 JV6577
 JV6577_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4238971259(NAD 83)
 JV6577
 JV6577                          SUPERSEDED SURVEY CONTROL
 JV6577
 JV6577  NAD 83(1986)-  39 28 35.40148(N)    076 49 56.84467(W) AD(       ) 3
 JV6577  NGVD 29 (02/12/91)  213.6    (m)          701.     (f) VERT ANG       
 JV6577
 JV6577.Superseded values are not recommended for survey control.
 JV6577
 JV6577.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6577.See file dsdata.pdf to determine how the superseded data were derived.
 JV6577
 JV6577_MARKER: DZ = AZIMUTH MARK DISK
 JV6577_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 JV6577_SP_SET: FOOTER FOR HIGHLINE TOWER
 JV6577_STAMPING: HAMMOND 3 1985
 JV6577_MARK LOGO: NGS
 JV6577_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6577_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6577+STABILITY: SURFACE MOTION
 JV6577
 JV6577  HISTORY     - Date     Condition        Report By
 JV6577  HISTORY     - 1985     MONUMENTED       NGS
 JV6577
 JV6577                          STATION DESCRIPTION
 JV6577
 JV6577'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 JV6577'THE MARKER IS LOCATED ABOUT 0.8 KM (0.50 MI) NORTH OF REISTERSTOWN AND
 JV6577'1.2 KM (0.75 MI) WEST OF GLYNDON.  OWNERSHIP--BALTIMORE GAS AND
 JV6577'ELECTRIC COMPANY.
 JV6577'TO REACH FROM THE POST OFFICE IN GLYNDON, GO WEST ON STATE HIGHWAY 128
 JV6577'FOR 1.2 KM (0.75 MI) TO THE HIGHLINE TOWER ON THE RIGHT AND THE MARKER
 JV6577'IN ITS MOST SOUTHERLY LEG.
 JV6577'THE DISK PROJECTS ABOUT 0.45 M (1.5 FT) ABOVE THE SURFACE OF THE
 JV6577'GROUND.  IT IS 42.82 M (140.5 FT) NORTH OF THE NORTH EDGE OF THE
 JV6577'BOTTOM OF THE FILL FOR THE PRESENT CONSTRUCTION ALONG THE NORTH EDGE
 JV6577'OF STATE HIGHWAY 128, 0.3 M (1.0 FT) SOUTH OF A POINT WHERE THE STEEL
 JV6577'LEG OF THE HIGHLINE TOWER IS ANCHORED TO ITS CONCRETE FOOTER AND 3.05
 JV6577'M (10.0 FT) NORTH OF THE NORTH EDGE OF A FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6543 ***********************************************************************
 JV6543  DESIGNATION -  HAMMOND 3 RM 4
 JV6543  PID         -  JV6543
 JV6543  STATE/COUNTY-  MD/BALTIMORE
 JV6543  COUNTRY     -  US
 JV6543  USGS QUAD   -  REISTERSTOWN (2016)
 JV6543
 JV6543                         *CURRENT SURVEY CONTROL
 JV6543  ______________________________________________________________________
 JV6543* NAD 83(1991) POSITION- 39 28 29.74177(N) 076 49 39.34590(W)   ADJUSTED
 JV6543* NAVD 88 ORTHO HEIGHT -   217.87  (meters)      714.8   (feet) RESET
 JV6543  ______________________________________________________________________
 JV6543  GEOID HEIGHT    -        -32.081 (meters)                     GEOID18
 JV6543  LAPLACE CORR    -         -1.82  (seconds)                    DEFLEC18
 JV6543  HORZ ORDER      -  THIRD
 JV6543  VERT ORDER      -  THIRD
 JV6543
 JV6543.The horizontal coordinates were established by classical geodetic methods
 JV6543.and adjusted by the National Geodetic Survey in January 1992.
 JV6543
 JV6543.The orthometric height was computed from unverified reset data.
 JV6543
 JV6543.No vertical observational check was made to the station.
 JV6543
 JV6543.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6543.GEOID18 height accuracy estimate available here.
 JV6543
 JV6543.Click photographs - Photos may exist for this station.
 JV6543
 JV6543.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6543
 JV6543. The following values were computed from the NAD 83(1991) position.
 JV6543
 JV6543;                    North         East     Units Scale Factor Converg.
 JV6543;SPC MD       -   200,745.316   414,834.434   MT  1.00000446   +0 06 29.5
 JV6543;SPC MD       -   658,611.92  1,361,002.64   sFT  1.00000446   +0 06 29.5
 JV6543;UTM  18      - 4,371,076.197   342,803.482   MT  0.99990425   -1 09 43.6
 JV6543
 JV6543!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6543!SPC MD       -   0.99997085  x   1.00000446  =   0.99997531
 JV6543!UTM  18      -   0.99997085  x   0.99990425  =   0.99987511
 JV6543
 JV6543_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4280371076(NAD 83)
 JV6543
 JV6543                          SUPERSEDED SURVEY CONTROL
 JV6543
 JV6543  NAD 83(1986)-  39 28 29.74012(N)    076 49 39.35253(W) AD(       ) 3
 JV6543  NGVD 29 (11/18/05)  218.09   (m)          715.5    (f) RESET       3  
 JV6543  NGVD 29             218.09   (m)          715.5    (f) LEVELING    3  
 JV6543
 JV6543.Superseded values are not recommended for survey control.
 JV6543
 JV6543.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6543.See file dsdata.pdf to determine how the superseded data were derived.
 JV6543
 JV6543_MARKER: DR = REFERENCE MARK DISK
 JV6543_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6543_SP_SET: CURB
 JV6543_STAMPING: HAMMOND 3 NO 4 1985
 JV6543_MARK LOGO: NGS
 JV6543_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6543_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6543
 JV6543  HISTORY     - Date     Condition        Report By
 JV6543  HISTORY     - 1985     MONUMENTED       NGS
 JV6543
 JV6543                          STATION DESCRIPTION
 JV6543
 JV6543'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 JV6543'IN REISTERSTOWN.
 JV6543'0.7 KM (0.45 MI) WEST ALONG STATE HIGHWAY 128 (BUTLER ROAD) FROM THE
 JV6543'POST OFFICE AT GLYNDON, 4.4 M (14.4 FT) SOUTH FROM THE CENTER OF
 JV6543'STATE HIGHWAY 128, 5.8 M (19.0 FT) WEST FROM THE CENTER OF FIRST
 JV6543'AVENUE, 2.2 M (7.2 FT) EAST FROM A MANHOLE OVER A CATCH BASIN AND
 JV6543'11.9 M (39.0 FT) SOUTH-SOUTHWEST FROM A POWERLINE POLE NUMBERED 3V
 JV6543'487317.
 JV6543'THE MARK IS 0.2 M ABOVE BUTLER RD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1291 ***********************************************************************
 JV1291  DESIGNATION -  HAMMOND RM 2
 JV1291  PID         -  JV1291
 JV1291  STATE/COUNTY-  MD/BALTIMORE
 JV1291  COUNTRY     -  US
 JV1291  USGS QUAD   -  REISTERSTOWN (2016)
 JV1291
 JV1291                         *CURRENT SURVEY CONTROL
 JV1291  ______________________________________________________________________
 JV1291* NAD 83(1991) POSITION- 39 28 29.83261(N) 076 49 41.37428(W)   ADJUSTED
 JV1291* NAVD 88 ORTHO HEIGHT -   220.982 (meters)      725.01  (feet) ADJUSTED
 JV1291  ______________________________________________________________________
 JV1291  GEOID HEIGHT    -        -32.081 (meters)                     GEOID18
 JV1291  LAPLACE CORR    -         -1.79  (seconds)                    DEFLEC18
 JV1291  DYNAMIC HEIGHT  -        220.867 (meters)      724.63  (feet) COMP
 JV1291  MODELED GRAVITY -    980,103.5   (mgal)                       NAVD 88
 JV1291
 JV1291  HORZ ORDER      -  THIRD
 JV1291  VERT ORDER      -  SECOND    CLASS 0
 JV1291
 JV1291.The horizontal coordinates were established by classical geodetic methods
 JV1291.and adjusted by the National Geodetic Survey in January 1992.
 JV1291
 JV1291.The orthometric height was determined by differential leveling and
 JV1291.adjusted by the NATIONAL GEODETIC SURVEY
 JV1291.in June 1991.
 JV1291
 JV1291.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1291.GEOID18 height accuracy estimate available here.
 JV1291
 JV1291.Click photographs - Photos may exist for this station.
 JV1291
 JV1291.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1291
 JV1291.The dynamic height is computed by dividing the NAVD 88
 JV1291.geopotential number by the normal gravity value computed on the
 JV1291.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1291.degrees latitude (g = 980.6199 gals.).
 JV1291
 JV1291.The modeled gravity was interpolated from observed gravity values.
 JV1291
 JV1291. The following values were computed from the NAD 83(1991) position.
 JV1291
 JV1291;                    North         East     Units Scale Factor Converg.
 JV1291;SPC MD       -   200,748.026   414,785.948   MT  1.00000446   +0 06 28.3
 JV1291;SPC MD       -   658,620.82  1,360,843.56   sFT  1.00000446   +0 06 28.3
 JV1291;UTM  18      - 4,371,079.981   342,755.073   MT  0.99990443   -1 09 44.9
 JV1291
 JV1291!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1291!SPC MD       -   0.99997036  x   1.00000446  =   0.99997482
 JV1291!UTM  18      -   0.99997036  x   0.99990443  =   0.99987480
 JV1291
 JV1291_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4275571079(NAD 83)
 JV1291
 JV1291                          SUPERSEDED SURVEY CONTROL
 JV1291
 JV1291  NAD 83(1986)-  39 28 29.83100(N)    076 49 41.38089(W) AD(       ) 3
 JV1291  NGVD 29             221.20   (m)          725.7    (f) LEVELING    3  
 JV1291  NGVD 29 (11/26/84)  221.204  (m)          725.73   (f) ADJUSTED    2 0
 JV1291
 JV1291.Superseded values are not recommended for survey control.
 JV1291
 JV1291.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1291.See file dsdata.pdf to determine how the superseded data were derived.
 JV1291
 JV1291_MARKER: DR = REFERENCE MARK DISK
 JV1291_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1291_STAMPING: HAMMOND NO 2 1933
 JV1291_MARK LOGO: CGS
 JV1291_PROJECTION: PROJECTING 20 CENTIMETERS
 JV1291_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1291+STABILITY: SURFACE MOTION
 JV1291
 JV1291  HISTORY     - Date     Condition        Report By
 JV1291  HISTORY     - 1933     MONUMENTED       CGS
 JV1291  HISTORY     - 1967     GOOD             MDSRC
 JV1291  HISTORY     - 1985     GOOD             NGS
 JV1291  HISTORY     - 20100217 GOOD             JARICE
 JV1291  HISTORY     - 20140531 GOOD             RODCON
 JV1291  HISTORY     - 20200317 GOOD             WTBALL
 JV1291  HISTORY     - 20210117 GOOD             WTBALL
 JV1291
 JV1291                          STATION DESCRIPTION
 JV1291
 JV1291'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1291'0.6 MI N FROM REISTERSTOWN.
 JV1291'FROM THE POST OFFICE IN REISTERSTOWN, MARYLAND, PROCEED NORTH
 JV1291'ALONG MARYLAND ROUTE 140 AND MARYLAND ROUTE 30 (REISTERSTOWN ROAD)
 JV1291'FOR 0.55 MILE TO THE INTERSECTION OF MARYLAND ROUTE 128 (BUTLER
 JV1291'ROAD).  THENCE EAST ALONG MARYLAND ROUTE 128 FOR 280.0 FEET
 JV1291'AND STATION, 39.5 FEET SOUTH OF THE CENTERLINE OF MARYLAND 128,
 JV1291'7.6 FEET EAST OF THE CENTERLINE OF A DRIVEWAY, 38.6 FEET SOUTHWEST
 JV1291'OF A FIRE HYDRANT AND 20.0 FEET NORTHEAST OF A 20-INCH MAPLE
 JV1291'TREE.  A STANDARD DISK SET IN THE TOP OF A CONCRETE POST PROJECTING
 JV1291'8-INCHES.
 JV1291
 JV1291                          STATION RECOVERY (1985)
 JV1291
 JV1291'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985
 JV1291'LOCATED 0.7 KM (0.45 MI) WEST ALONG STATE HIGHWAY 128 (BULTER ROAD)
 JV1291'FROM THE POST OFFICE AT GLYNDON, 13.4 METERS (44 FT) NORTH-NORTHEAST
 JV1291'FROM THE NORTHEAST CORNER OF THE PORCH FOR A HOUSE AT 2 BULTER ROAD,
 JV1291'1.0 METER (3.4 FT) SOUTHEAST FROM A POWERLINE POLE NUMBERED 533550,
 JV1291'11.6 METERS (38.2 FT) SOUTHWEST FROM A FIRE HYDRANT AND 2.4 METERS (8
 JV1291'FT) EAST FROM THE CENTER OF A DRIVE LEADING SOUTH TO THE HOUSE.
 JV1291
 JV1291                          STATION RECOVERY (2010)
 JV1291
 JV1291'RECOVERY NOTE BY J A RICE INC 2010 (MRA)
 JV1291'RECOVERED IN GOOD CONDITION.
 JV1291
 JV1291                          STATION RECOVERY (2014)
 JV1291
 JV1291'RECOVERY NOTE BY RODGERS CONSULTING INC 2014 (JMB)
 JV1291'RECOVERED IN GOOD CONDITION.
 JV1291
 JV1291                          STATION RECOVERY (2020)
 JV1291
 JV1291'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV1291'RECOVERED IN GOOD CONDITION.
 JV1291
 JV1291                          STATION RECOVERY (2021)
 JV1291
 JV1291'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2021 (JMB)
 JV1291'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1293 ***********************************************************************
 JV1293  DESIGNATION -  HAMMOND RM 3 RESET
 JV1293  PID         -  JV1293
 JV1293  STATE/COUNTY-  MD/BALTIMORE
 JV1293  COUNTRY     -  US
 JV1293  USGS QUAD   -  REISTERSTOWN (2016)
 JV1293
 JV1293                         *CURRENT SURVEY CONTROL
 JV1293  ______________________________________________________________________
 JV1293* NAD 83(1986) POSITION- 39 28 30.98   (N) 076 49 42.38   (W)   HD_HELD1
 JV1293* NAVD 88 ORTHO HEIGHT -   220.556 (meters)      723.61  (feet) ADJUSTED
 JV1293  ______________________________________________________________________
 JV1293  GEOID HEIGHT    -        -32.081 (meters)                     GEOID18
 JV1293  DYNAMIC HEIGHT  -        220.442 (meters)      723.23  (feet) COMP
 JV1293  MODELED GRAVITY -    980,103.5   (mgal)                       NAVD 88
 JV1293
 JV1293  VERT ORDER      -  SECOND    CLASS 0
 JV1293
 JV1293.The horizontal coordinates were determined by differentially corrected
 JV1293.hand held GPS observations or other comparable positioning techniques
 JV1293.and have an estimated accuracy of +/- 3 meters.
 JV1293
 JV1293.The orthometric height was determined by differential leveling and
 JV1293.adjusted by the NATIONAL GEODETIC SURVEY
 JV1293.in June 1991.
 JV1293
 JV1293.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1293.GEOID18 height accuracy estimate available here.
 JV1293
 JV1293.Click photographs - Photos may exist for this station.
 JV1293
 JV1293.The dynamic height is computed by dividing the NAVD 88
 JV1293.geopotential number by the normal gravity value computed on the
 JV1293.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1293.degrees latitude (g = 980.6199 gals.).
 JV1293
 JV1293.The modeled gravity was interpolated from observed gravity values.
 JV1293
 JV1293;                    North         East    Units  Estimated Accuracy
 JV1293;SPC MD       -   200,783.4     414,761.8     MT  (+/- 3 meters HH1 GPS) 
 JV1293
 JV1293_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4273171115(NAD 83)
 JV1293
 JV1293                          SUPERSEDED SURVEY CONTROL
 JV1293
 JV1293  NGVD 29 (11/26/84)  220.779  (m)          724.34   (f) ADJUSTED    2 0
 JV1293
 JV1293.Superseded values are not recommended for survey control.
 JV1293
 JV1293.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1293.See file dsdata.pdf to determine how the superseded data were derived.
 JV1293
 JV1293_MARKER: DR = REFERENCE MARK DISK
 JV1293_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1293_STAMPING: HAMMOND NO 3 1933
 JV1293_MARK LOGO: CGS
 JV1293_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1293+STABILITY: SURFACE MOTION
 JV1293
 JV1293  HISTORY     - Date     Condition        Report By
 JV1293  HISTORY     - 1938     MONUMENTED       CGS
 JV1293  HISTORY     - 1967     GOOD             MDSRC
 JV1293
 JV1293                          STATION DESCRIPTION
 JV1293
 JV1293'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1293'0.6 MI N FROM REISTERSTOWN.
 JV1293'FROM THE POST OFFICE IN REISTERSTOWN, MARYLAND, PROCEED NORTH ALONG
 JV1293'MARYLAND ROUTE 140 AND MARYLAND ROUTE 30 (REISTERSTOWN ROAD)
 JV1293'FOR 0.55 MILE TO THE INTERSECTION OF MARYLAND ROUTE 128 (BUTLER
 JV1293'ROAD).  THENCE EAST ALONG MARYLAND 128 FOR 162.0 FEET AND
 JV1293'STATION, 59.5 FEET NORTH OF THE CENTERLINE OF MARYLAND 128, 36.3
 JV1293'FEET NORTH OF C AND P POLE NUMBER 1-V, 2.7 FEET SOUTH OF A HEDGE
 JV1293'ROW AND 44.7 FEET WEST OF THE CENTERLINE OF A CONCRETE DRIVEWAY.
 JV1293'A STANDARD DISK SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV1293'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6124 ***********************************************************************
 JV6124  DESIGNATION -  HAMPSTEAD
 JV6124  PID         -  JV6124
 JV6124  STATE/COUNTY-  MD/CARROLL
 JV6124  COUNTRY     -  US
 JV6124  USGS QUAD   -  HAMPSTEAD (2016)
 JV6124
 JV6124                         *CURRENT SURVEY CONTROL
 JV6124  ______________________________________________________________________
 JV6124* NAD 83(1991) POSITION- 39 36 39.58432(N) 076 50 58.01944(W)   ADJUSTED
 JV6124* NAVD 88 ORTHO HEIGHT -   281.    (meters)      922.    (feet) SCALED
 JV6124  ______________________________________________________________________
 JV6124  GEOID HEIGHT    -        -32.168 (meters)                     GEOID18
 JV6124  LAPLACE CORR    -          0.58  (seconds)                    DEFLEC18
 JV6124  HORZ ORDER      -  FIRST
 JV6124
 JV6124.The horizontal coordinates were established by classical geodetic methods
 JV6124.and adjusted by the National Geodetic Survey in January 1992.
 JV6124
 JV6124.The orthometric height was scaled from a topographic map.
 JV6124
 JV6124.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6124.GEOID18 height accuracy estimate available here.
 JV6124
 JV6124.Click photographs - Photos may exist for this station.
 JV6124
 JV6124.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6124
 JV6124. The following values were computed from the NAD 83(1991) position.
 JV6124
 JV6124;                    North         East     Units Scale Factor Converg.
 JV6124;SPC MD       -   215,849.236   412,929.122   MT  1.00003213   +0 05 40.2
 JV6124;SPC MD       -   708,165.37  1,354,751.63   sFT  1.00003213   +0 05 40.2
 JV6124;SPC PA S     -    31,224.897   677,339.814   MT  1.00006603   +0 35 03.4
 JV6124;SPC PA S     -   102,443.68  2,222,239.04   sFT  1.00006603   +0 35 03.4
 JV6124;UTM  18      - 4,386,217.020   341,234.129   MT  0.99991034   -1 10 45.9
 JV6124
 JV6124!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6124!SPC MD       -   0.99996100  x   1.00003213  =   0.99999313
 JV6124!SPC PA S     -   0.99996100  x   1.00006603  =   1.00002702
 JV6124!UTM  18      -   0.99996100  x   0.99991034  =   0.99987134
 JV6124
 JV6124:                Primary Azimuth Mark                     Grid Az
 JV6124:SPC MD       -  HAMPSTEAD AZ MK                          145 29 08.0
 JV6124:SPC PA S     -  HAMPSTEAD AZ MK                          144 59 44.8
 JV6124:UTM  18      -  HAMPSTEAD AZ MK                          146 45 34.1
 JV6124
 JV6124_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4123486217(NAD 83)
 JV6124
 JV6124|---------------------------------------------------------------------|
 JV6124| PID    Reference Object                     Distance      Geod. Az  |
 JV6124|                                                           dddmmss.s |
 JV6124| JV6080 BALTIMORE ELMIRA AIRWAY BCN 3       APPROX.23.5 KM 0380512.5 |
 JV6124| CA9490 HAMPSTEAD RM 1                       20.225 METERS 03858     |
 JV6124| JV6101 BALTIMORE ELMIRA AIRWAYS BCN 1      APPROX.23.4 KM 1133110.8 |
 JV6124| JV1705 HAMPSTEAD AZ MK                                    1453448.2 |
 JV6124| CA9491 HAMPSTEAD RM 2                       16.970 METERS 20732     |
 JV6124| JV6125 HAMPSTEAD MUNICIPAL TANK              8.943 METERS 21715     |
 JV6124|---------------------------------------------------------------------|
 JV6124
 JV6124                          SUPERSEDED SURVEY CONTROL
 JV6124
 JV6124  NAD 83(1986)-  39 36 39.57952(N)    076 50 58.02316(W) AD(       ) 1
 JV6124  NAD 27      -  39 36 39.20200(N)    076 50 59.10500(W) AD(       ) 1
 JV6124
 JV6124.Superseded values are not recommended for survey control.
 JV6124
 JV6124.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6124.See file dsdata.pdf to determine how the superseded data were derived.
 JV6124
 JV6124_MARKER: DS = TRIANGULATION STATION DISK
 JV6124_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6124_STAMPING: HAMPSTEAD 1939
 JV6124_MARK LOGO: CGS
 JV6124_PROJECTION: PROJECTING 3 CENTIMETERS
 JV6124_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6124+STABILITY: SURFACE MOTION
 JV6124
 JV6124  HISTORY     - Date     Condition        Report By
 JV6124  HISTORY     - 1939     MONUMENTED       CGS
 JV6124  HISTORY     - 1953     GOOD             CGS
 JV6124  HISTORY     - 1961     GOOD             LOCENG
 JV6124  HISTORY     - 20150404 GOOD             RODCON
 JV6124  HISTORY     - 20200307 GOOD             WTBALL
 JV6124
 JV6124                          STATION DESCRIPTION
 JV6124
 JV6124'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV6124'STATION IS AT THE CITY WATER TANK OF THE TOWN OF HAMPSTEAD.  IT
 JV6124'IS 29.34 FEET NE OF THE CENTER OF THE TANK.  1.5 FEET E OF THE
 JV6124'RANGE BETWEEN THE CENTER AND THE NE LEG AND 8 FEET NE OF THE NE
 JV6124'LEG.  THIS TANK STANDS ABOUT 0.25 MILE N AND 0.15 MILE E OF THE
 JV6124'HAMPSTEAD BANK AND POST OFFICE BUILDINGS.
 JV6124'
 JV6124'THE SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD
 JV6124'BRONZE DISKS SET IN CONCRETE.
 JV6124'
 JV6124'REFERENCE MARK NO.1 IS NE OF THE STATION IN THE FENCE LINE ON
 JV6124'THE S SIDE OF A MACADAM ROAD.
 JV6124'
 JV6124'REFERENCE MARK NO.2 IS SW OF THE STATION IN THE FENCE LINE, 7.5
 JV6124'FEET S OF THE SW LEG OF THE TANK.
 JV6124'
 JV6124'AZIMUTH MARK IS ABOUT 0.4 MILE SE OF THE STATION AND 0.35 MILE
 JV6124'E OF THE HAMPSTEAD BANK BUILDING.  IN THE TOP OF THE S ABUTMENT
 JV6124'OF A SMALL CONCRETE CULVERT, ABOUT 200 FEET W OF A TWO-STORY
 JV6124'FARMHOUSE.
 JV6124'
 JV6124'TO REACH THE AZIMUTH FROM THE STATION GO TO HAMPSTEAD BANK
 JV6124'BUILDING AND TURN E ON A PAVED ROAD AND FOLLOW IT E, S, AND E FOR
 JV6124'0.4 MILE TO THE MARK ON THE RIGHT.
 JV6124'
 JV6124'HEIGHT OF LIGHT ABOVE STATION MARK 23 METERS.
 JV6124
 JV6124                          STATION RECOVERY (1953)
 JV6124
 JV6124'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (EWM)
 JV6124'STATION AND REFERENCE MARKS ARE O.K.
 JV6124'
 JV6124'RECOVERED AS DESCRIBED - IN GOOD CONDITION.  HOUSE HAS BEEN
 JV6124'BUILT BETWEEN STATION AND AZIMUTH MARK.
 JV6124
 JV6124                          STATION RECOVERY (1961)
 JV6124
 JV6124'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1961
 JV6124'RECOVERED BY E.C. BALLING MAPS, INC.
 JV6124'
 JV6124'STATION FOUND IN GOOD CONDITION.
 JV6124
 JV6124                          STATION RECOVERY (2015)
 JV6124
 JV6124'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 JV6124'RECOVERED IN GOOD CONDITION.
 JV6124
 JV6124                          STATION RECOVERY (2020)
 JV6124
 JV6124'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 JV6124'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1705 ***********************************************************************
 JV1705  DESIGNATION -  HAMPSTEAD AZ MK
 JV1705  PID         -  JV1705
 JV1705  STATE/COUNTY-  MD/CARROLL
 JV1705  COUNTRY     -  US
 JV1705  USGS QUAD   -  HAMPSTEAD (2016)
 JV1705
 JV1705                         *CURRENT SURVEY CONTROL
 JV1705  ______________________________________________________________________
 JV1705* NAD 83(1986) POSITION- 39 36 15.     (N) 076 50 36.     (W)   SCALED
 JV1705* NAVD 88 ORTHO HEIGHT -   268.269 (meters)      880.15  (feet) ADJUSTED
 JV1705  ______________________________________________________________________
 JV1705  GEOID HEIGHT    -        -32.156 (meters)                     GEOID18
 JV1705  DYNAMIC HEIGHT  -        268.131 (meters)      879.69  (feet) COMP
 JV1705  MODELED GRAVITY -    980,104.8   (mgal)                       NAVD 88
 JV1705
 JV1705  VERT ORDER      -  SECOND    CLASS 0
 JV1705
 JV1705.The horizontal coordinates were scaled from a map and have
 JV1705.an estimated accuracy of +/- 6 seconds.
 JV1705
 JV1705.The orthometric height was determined by differential leveling and
 JV1705.adjusted by the NATIONAL GEODETIC SURVEY
 JV1705.in June 1991.
 JV1705
 JV1705.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1705.GEOID18 height accuracy estimate available here.
 JV1705
 JV1705.Click photographs - Photos may exist for this station.
 JV1705
 JV1705.The dynamic height is computed by dividing the NAVD 88
 JV1705.geopotential number by the normal gravity value computed on the
 JV1705.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1705.degrees latitude (g = 980.6199 gals.).
 JV1705
 JV1705.The modeled gravity was interpolated from observed gravity values.
 JV1705
 JV1705;                    North         East    Units  Estimated Accuracy
 JV1705;SPC MD       -   215,090.      413,460.      MT  (+/- 180 meters Scaled)
 JV1705
 JV1705_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ417854(NAD 83)
 JV1705
 JV1705                          SUPERSEDED SURVEY CONTROL
 JV1705
 JV1705  NGVD 29 (11/26/84)  268.481  (m)          880.84   (f) ADJUSTED    2 0
 JV1705
 JV1705.Superseded values are not recommended for survey control.
 JV1705
 JV1705.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1705.See file dsdata.pdf to determine how the superseded data were derived.
 JV1705
 JV1705_MARKER: DZ = AZIMUTH MARK DISK
 JV1705_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV1705_SP_SET: CULVERT
 JV1705_STAMPING: HAMPSTEAD 1939
 JV1705_MARK LOGO: CGS
 JV1705_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1705
 JV1705  HISTORY     - Date     Condition        Report By
 JV1705  HISTORY     - 1939     MONUMENTED       CGS
 JV1705  HISTORY     - 1942     GOOD             CGS
 JV1705  HISTORY     - 19960603 MARK NOT FOUND   MDSHA
 JV1705  HISTORY     - 20070605 MARK NOT FOUND   MD-005
 JV1705
 JV1705                          STATION DESCRIPTION
 JV1705
 JV1705'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV1705'0.4 MI SE FROM HAMPSTEAD.
 JV1705'0.4 MILE SOUTHEAST ALONG THE BUTLER ROAD FROM THE POST OFFICE AT
 JV1705'HAMPSTEAD, CARROLL COUNTY, 200 FEET WEST OF A TWO-STORY FARMHOUSE,
 JV1705'AT A CONCRETE CULVERT UNDER THE HIGHWAY, AND IN THE TOP OF THE
 JV1705'SOUTH WALL.  A STANDARD AZIMUTH-MARK DISK, STAMPED HAMPSTEAD 1939.
 JV1705
 JV1705                          STATION RECOVERY (1996)
 JV1705
 JV1705'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1996 (SFK)
 JV1705'THE MARK WAS SEARCHED FOR AND NOT RECOVERED.
 JV1705
 JV1705                          STATION RECOVERY (2007)
 JV1705
 JV1705'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2007 (PAS)
 JV1705'ATTEMPTED RECOVERY BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN
 JV1705'2007 (PAS). THE BUTLER ROAD, AS MENTIONED IN THE 1942 STATION
 JV1705'DESCRIPTION, IS NOW KNOWN AS LOWER BECKLEYSVILLE ROAD. IT APPEARS THE
 JV1705'CONCRETE CULVERT HAS BEEN REPLACED WITH THE IMPROVEMENTS TO THE ROAD
 JV1705'WHICH MAY HAVE CAUSED THE STATION TO BE LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5454 ***********************************************************************
 JV5454  DESIGNATION -  HAMPTON
 JV5454  PID         -  JV5454
 JV5454  STATE/COUNTY-  MD/BALTIMORE
 JV5454  COUNTRY     -  US
 JV5454  USGS QUAD   -  TOWSON (2016)
 JV5454
 JV5454                         *CURRENT SURVEY CONTROL
 JV5454  ______________________________________________________________________
 JV5454* NAD 83(1991) POSITION- 39 25 45.86658(N) 076 35 43.25937(W)   ADJUSTED
 JV5454* NAVD 88 ORTHO HEIGHT -    90.    (meters)      295.    (feet) SCALED
 JV5454  ______________________________________________________________________
 JV5454  GEOID HEIGHT    -        -32.556 (meters)                     GEOID18
 JV5454  LAPLACE CORR    -         -4.51  (seconds)                    DEFLEC18
 JV5454  HORZ ORDER      -  FIRST
 JV5454
 JV5454.The horizontal coordinates were established by classical geodetic methods
 JV5454.and adjusted by the National Geodetic Survey in January 1992.
 JV5454
 JV5454.The orthometric height was scaled from a topographic map.
 JV5454
 JV5454.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5454.GEOID18 height accuracy estimate available here.
 JV5454
 JV5454.Click photographs - Photos may exist for this station.
 JV5454
 JV5454.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5454
 JV5454. The following values were computed from the NAD 83(1991) position.
 JV5454
 JV5454;                    North         East     Units Scale Factor Converg.
 JV5454;SPC MD       -   195,754.607   434,840.290   MT  0.99999646   +0 15 14.3
 JV5454;SPC MD       -   642,238.24  1,426,638.52   sFT  0.99999646   +0 15 14.3
 JV5454;UTM  18      - 4,365,644.437   362,691.275   MT  0.99983213   -1 00 48.3
 JV5454
 JV5454!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5454!SPC MD       -   0.99999102  x   0.99999646  =   0.99998748
 JV5454!UTM  18      -   0.99999102  x   0.99983213  =   0.99982316
 JV5454
 JV5454:                Primary Azimuth Mark                     Grid Az
 JV5454:SPC MD       -  HAMPTON AZ MK                            193 11 28.5
 JV5454:UTM  18      -  HAMPTON AZ MK                            194 27 31.1
 JV5454
 JV5454_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6269165644(NAD 83)
 JV5454
 JV5454|---------------------------------------------------------------------|
 JV5454| PID    Reference Object                     Distance      Geod. Az  |
 JV5454|                                                           dddmmss.s |
 JV5454| CA9492 HAMPTON AZ MK                                      1932642.8 |
 JV5454| JV5447 TOWSON SACRED HEART LTNING ROD      APPROX. 3.3 KM 2271309.6 |
 JV5454| CA9494 HAMPTON RM 2                         27.249 METERS 25955     |
 JV5454| CA9493 HAMPTON RM 1                         42.398 METERS 34608     |
 JV5454|---------------------------------------------------------------------|
 JV5454
 JV5454                          SUPERSEDED SURVEY CONTROL
 JV5454
 JV5454  NAD 83(1986)-  39 25 45.86261(N)    076 35 43.26631(W) AD(       ) 1
 JV5454  NAD 27      -  39 25 45.47800(N)    076 35 44.37800(W) AD(       ) 1
 JV5454
 JV5454.Superseded values are not recommended for survey control.
 JV5454
 JV5454.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5454.See file dsdata.pdf to determine how the superseded data were derived.
 JV5454
 JV5454_MARKER: DS = TRIANGULATION STATION DISK
 JV5454_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5454_STAMPING: HAMPTON 1938
 JV5454_MARK LOGO: CGS
 JV5454_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5454+STABILITY: SURFACE MOTION
 JV5454
 JV5454  HISTORY     - Date     Condition        Report By
 JV5454  HISTORY     - 1938     MONUMENTED       CGS
 JV5454  HISTORY     - 1958     GOOD             CGS
 JV5454  HISTORY     - 1970     GOOD             MDDT
 JV5454
 JV5454                          STATION DESCRIPTION
 JV5454
 JV5454'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV5454'THE STATION IS ON PROPERTY OF BALTIMORE CITY WATER SUPPLY ABOUT 2
 JV5454'MILES NNE OF TOWSON ON E SIDE OF DULANEY VALLEY ROAD NEAR THE SW
 JV5454'ARM OF LOCH RAVEN.
 JV5454'
 JV5454'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV5454'BRONZE DISKS SET IN CONCRETE.
 JV5454'
 JV5454'AZIMUTH MARK IS ON THE E SIDE OF DULANEY VALLEY ROAD 3500 FEET S
 JV5454'OF POTT SPRING ROAD.
 JV5454'
 JV5454'TO REACH FROM BALTIMORE GO N ON YORK ROAD TO TOWSON NNE ON
 JV5454'DULANEY VALLEY ROAD 1.65 MILES TO INTERSECTION OF POTT SPRING
 JV5454'ROAD.  CONTINUE ON DULANEY VALLEY ROAD 0.25 MILE TO A CUT BANK AT
 JV5454'TOP OF RISE.  THE STATION IS ON TOP OF E BANK OF ROAD.
 JV5454'
 JV5454'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5454
 JV5454                          STATION RECOVERY (1958)
 JV5454
 JV5454'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5454'STATION RECOVERED AS DESCRIBED.  ALL MARKS WERE FOUND IN GOOD
 JV5454'CONDITION.  THE ORIGINAL DESCRIPTION IS ADEQUATE TO RECOVER.
 JV5454'
 JV5454'AT THE REQUEST OF THE PROPERTY OWNER, THE AZIMUTH MARK WAS
 JV5454'LOWERED IN PLACE SO THAT THE TOP IS FLUSH WITH THE GROUND.  IT
 JV5454'NOW IS SITUATED IN THE FRONT YARD OF ANDREW TOLAND, 1217 DULANEY
 JV5454'VALLEY ROAD.
 JV5454
 JV5454                          STATION RECOVERY (1970)
 JV5454
 JV5454'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1970
 JV5454'STATION, REFERENCE MARKS, AND AZIMUTH MARK WERE RECOVERED AS
 JV5454'DESCRIBED IN GOOD CONDITION.  CONSIDERABLE CLEARING OF LINE WILL
 JV5454'BE REQUIRED TO VG THE AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3917 ***********************************************************************
 JU3917  DESIGNATION -  HANCE POINT 2 1898
 JU3917  PID         -  JU3917
 JU3917  STATE/COUNTY-  MD/CECIL
 JU3917  COUNTRY     -  US
 JU3917  USGS QUAD   -  NORTH EAST (2016)
 JU3917
 JU3917                         *CURRENT SURVEY CONTROL
 JU3917  ______________________________________________________________________
 JU3917* NAD 83(1991) POSITION- 39 33 24.75423(N) 075 58 01.35056(W)   ADJUSTED
 JU3917* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JU3917  ______________________________________________________________________
 JU3917  GEOID HEIGHT    -        -33.231 (meters)                     GEOID18
 JU3917  LAPLACE CORR    -          0.02  (seconds)                    DEFLEC18
 JU3917  HORZ ORDER      -  THIRD
 JU3917
 JU3917.The horizontal coordinates were established by classical geodetic methods
 JU3917.and adjusted by the National Geodetic Survey in January 1992.
 JU3917
 JU3917.The orthometric height was scaled from a topographic map.
 JU3917
 JU3917.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3917.GEOID18 height accuracy estimate available here.
 JU3917
 JU3917.Click photographs - Photos may exist for this station.
 JU3917
 JU3917.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3917
 JU3917. The following values were computed from the NAD 83(1991) position.
 JU3917
 JU3917;                    North         East     Units Scale Factor Converg.
 JU3917;SPC MD       -   210,331.982   488,775.727   MT  1.00002044   +0 38 54.0
 JU3917;SPC MD       -   690,064.18  1,603,591.70   sFT  1.00002044   +0 38 54.0
 JU3917;UTM  18      - 4,379,023.207   416,921.751   MT  0.99968498   -0 36 57.2
 JU3917
 JU3917!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3917!SPC MD       -   1.00000384  x   1.00002044  =   1.00002428
 JU3917!UTM  18      -   1.00000384  x   0.99968498  =   0.99968882
 JU3917
 JU3917_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1692179023(NAD 83)
 JU3917
 JU3917                          SUPERSEDED SURVEY CONTROL
 JU3917
 JU3917  NAD 83(1986)-  39 33 24.74632(N)    075 58 01.35546(W) AD(       ) 3
 JU3917  NAD 27      -  39 33 24.34700(N)    075 58 02.56500(W) AD(       ) 3
 JU3917  USSD        -  39 33 24.73300(N)    075 58 02.41200(W) AD(       ) 3
 JU3917
 JU3917.Superseded values are not recommended for survey control.
 JU3917
 JU3917.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3917.See file dsdata.pdf to determine how the superseded data were derived.
 JU3917
 JU3917_MARKER: Z = SEE DESCRIPTION
 JU3917_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JU3917_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3917
 JU3917  HISTORY     - Date     Condition        Report By
 JU3917  HISTORY     - 1898     MONUMENTED       CGS
 JU3917  HISTORY     - 1937     MARK NOT FOUND   CGS
 JU3917
 JU3917                          STATION DESCRIPTION
 JU3917
 JU3917'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JU3917'ON HANCE POINT, NORTHEAST RIVER, IN A CULTIVATED FIELD, SOME
 JU3917'DISTANCE FROM SHORE LINE AND 8.7 FEET FROM FENCE.  MARKED BY
 JU3917'TWO 6-INCH TILE PIPES SET ONE ABOVE THE OTHER, THE TOP OF THE
 JU3917'UPPER PIPE BEING 6 INCHES BELOW SURFACE OF GROUND.  THE SURFACE
 JU3917'MARK IS A 4-INCH PINE STUB WITH TOP FLUSH WITH GROUND.
 JU3917
 JU3917                          STATION RECOVERY (1937)
 JU3917
 JU3917'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JU3917'CULTIVATED FIELD NOT FOUND.  FENCE MENTIONED IN DESCRIPTION IS
 JU3917'GONE.  COULD NOT LOCATE STATION ON ACCOUNT OF CHANGES IN
 JU3917'SURROUNDINGS DURING THE PERIOD 1898 TO 1937.  IT IS RECOMMENDED
 JU3917'THAT THIS STATION BE DESIGNATED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR1748 ***********************************************************************
 DR1748  DESIGNATION -  HANCOCK CBL 0
 DR1748  PID         -  DR1748
 DR1748  STATE/COUNTY-  MD/WASHINGTON
 DR1748  COUNTRY     -  US
 DR1748  USGS QUAD   -  HANCOCK (2016)
 DR1748
 DR1748                         *CURRENT SURVEY CONTROL
 DR1748  ______________________________________________________________________
 DR1748* NAD 83(1986) POSITION- 39 41 53.8    (N) 078 10 39.9    (W)   HD_HELD2
 DR1748* NAVD 88 ORTHO HEIGHT -   131.492 (meters)      431.40  (feet) ADJUSTED
 DR1748  ______________________________________________________________________
 DR1748  GEOID HEIGHT    -        -34.030 (meters)                     GEOID18
 DR1748  DYNAMIC HEIGHT  -        131.417 (meters)      431.16  (feet) COMP
 DR1748  MODELED GRAVITY -    980,051.9   (mgal)                       NAVD 88
 DR1748
 DR1748  VERT ORDER      -  FIRST     CLASS II
 DR1748
 DR1748.The horizontal coordinates were established by autonomous hand held GPS
 DR1748.observations and have an estimated accuracy of +/- 10 meters.
 DR1748
 DR1748.The orthometric height was determined by differential leveling and
 DR1748.adjusted by the NATIONAL GEODETIC SURVEY
 DR1748.in July 2019.
 DR1748
 DR1748.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR1748.GEOID18 height accuracy estimate available here.
 DR1748
 DR1748.Click photographs - Photos may exist for this station.
 DR1748
 DR1748.The dynamic height is computed by dividing the NAVD 88
 DR1748.geopotential number by the normal gravity value computed on the
 DR1748.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR1748.degrees latitude (g = 980.6199 gals.).
 DR1748
 DR1748.The modeled gravity was interpolated from observed gravity values.
 DR1748
 DR1748;                    North         East    Units  Estimated Accuracy
 DR1748;SPC MD       -   226,181.      298,984.      MT  (+/- 10 meters HH2 GPS)
 DR1748
 DR1748_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD4198198078(NAD 83)
 DR1748
 DR1748                          SUPERSEDED SURVEY CONTROL
 DR1748
 DR1748.No superseded survey control is available for this station.
 DR1748
 DR1748_MARKER: DQ = CALIBRATION BASE LINE DISK
 DR1748_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR1748_STAMPING: CBL 0 2011
 DR1748_MARK LOGO: NGS
 DR1748_PROJECTION: FLUSH
 DR1748_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR1748_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR1748+STABILITY: SURFACE MOTION
 DR1748_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DR1748+SATELLITE: SATELLITE OBSERVATIONS - October 09, 2020
 DR1748
 DR1748  HISTORY     - Date     Condition        Report By
 DR1748  HISTORY     - 20101113 MONUMENTED       RCFC
 DR1748  HISTORY     - 20101113 GOOD             MDSHA
 DR1748  HISTORY     - 2015     GOOD             NGS
 DR1748  HISTORY     - 20201009 GOOD             WTBALL
 DR1748
 DR1748                          STATION DESCRIPTION
 DR1748
 DR1748'DESCRIBED BY RIVERSIDE COUNTY FLOOD CONTROL 2010 (WO)
 DR1748'THE STATION IS LOCATED ABOUT 10.1 MI (16.3 KM) WEST-NORTHWEST OF BIG
 DR1748'POOL, 8.6 MI (13.8 KM) EAST OF BELLEGROVE, IN THE TOWN OF HANCOCK AND
 DR1748'ON THE WESTERN MARYLAND RAIL TRAIL.  OWNERSHIP--MARYLAND PARK SERVICE.
 DR1748'TO REACH THE MARK FROM THE INTERSTATE (I-70) PROCEED WEST ALONG MD 144
 DR1748'( E MAIN ST) APPROXIMATELY 1.4 MI (2.3 KM) FROM OFF RAMPS AT EXIT-3.
 DR1748'TURN LEFT ON TO CHURCH STREET PROCEED APPROXIMATELY 300 FT (91.4 M) TO
 DR1748'THE WESTERN MARYLAND RAIL TRAIL.  THE MARK IS ON THE LEFT (NE CORNER
 DR1748'OF THE NORTHERN GATE).
 DR1748'
 DR1748'IT IS 46.7 FT (14.2 M) SOUTHEAST OF THE EAST EDGE OF THE INTERSECTION
 DR1748'OF THE RAIL TRAIL AND CHURCH ST., 39.7 FT (12.1 M) NORTHEAST OF THE
 DR1748'CENTER OF THE NORTH EDGE OF THE CONCRETE AND STEEL TRUSS BRIDGE DECK
 DR1748'OVER THE CHESAPEAKE AND OHIO CANAL, 6.6 FT (2.0 M) SOUTH-SOUTHEAST OF
 DR1748'THE NORTHERN STEEL GATE POST FOR RAIL TRAIL, 2.4 FT (0.7 M)
 DR1748'NORTH-NORTHEAST OF THE NORTH EDGE OF THE PAVED RAIL TRAIL PATH AND SET
 DR1748'IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST.
 DR1748'
 DR1748'PLEASE DO NOT MARK UP, PAINT, PLACE RIBBON, WITNESS POSTS OR IN ANY
 DR1748'OTHER WAY LEAVE MARKINGS, BY ORDER OF THE PARK SERVICE.
 DR1748
 DR1748                          STATION RECOVERY (2010)
 DR1748
 DR1748'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (TPB)
 DR1748'RECOVERED AS DESCRIBED.
 DR1748
 DR1748                          STATION RECOVERY (2015)
 DR1748
 DR1748'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2015 (SEB)
 DR1748'RECOVERED IN GOOD CONDITION.
 DR1748
 DR1748                          STATION RECOVERY (2020)
 DR1748
 DR1748'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 DR1748'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR1749 ***********************************************************************
 DR1749  DESIGNATION -  HANCOCK CBL 1020
 DR1749  PID         -  DR1749
 DR1749  STATE/COUNTY-  MD/WASHINGTON
 DR1749  COUNTRY     -  US
 DR1749  USGS QUAD   -  HANCOCK (2016)
 DR1749
 DR1749                         *CURRENT SURVEY CONTROL
 DR1749  ______________________________________________________________________
 DR1749* NAD 83(1986) POSITION- 39 41 46.8    (N) 078 09 58.3    (W)   HD_HELD2
 DR1749* NAVD 88 ORTHO HEIGHT -   131.265 (meters)      430.66  (feet) ADJUSTED
 DR1749  ______________________________________________________________________
 DR1749  GEOID HEIGHT    -        -34.049 (meters)                     GEOID18
 DR1749  DYNAMIC HEIGHT  -        131.190 (meters)      430.41  (feet) COMP
 DR1749  MODELED GRAVITY -    980,050.6   (mgal)                       NAVD 88
 DR1749
 DR1749  VERT ORDER      -  FIRST     CLASS II
 DR1749
 DR1749.The horizontal coordinates were established by autonomous hand held GPS
 DR1749.observations and have an estimated accuracy of +/- 10 meters.
 DR1749
 DR1749.The orthometric height was determined by differential leveling and
 DR1749.adjusted by the NATIONAL GEODETIC SURVEY
 DR1749.in July 2019.
 DR1749
 DR1749.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR1749.GEOID18 height accuracy estimate available here.
 DR1749
 DR1749.Click photographs - Photos may exist for this station.
 DR1749
 DR1749.The dynamic height is computed by dividing the NAVD 88
 DR1749.geopotential number by the normal gravity value computed on the
 DR1749.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR1749.degrees latitude (g = 980.6199 gals.).
 DR1749
 DR1749.The modeled gravity was interpolated from observed gravity values.
 DR1749
 DR1749;                    North         East    Units  Estimated Accuracy
 DR1749;SPC MD       -   225,953.      299,972.      MT  (+/- 10 meters HH2 GPS)
 DR1749
 DR1749_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD4297997893(NAD 83)
 DR1749
 DR1749                          SUPERSEDED SURVEY CONTROL
 DR1749
 DR1749.No superseded survey control is available for this station.
 DR1749
 DR1749_MARKER: DQ = CALIBRATION BASE LINE DISK
 DR1749_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR1749_STAMPING: CBL 1020 2011
 DR1749_MARK LOGO: NGS
 DR1749_PROJECTION: FLUSH
 DR1749_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR1749_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR1749+STABILITY: SURFACE MOTION
 DR1749
 DR1749  HISTORY     - Date     Condition        Report By
 DR1749  HISTORY     - 20101113 MONUMENTED       RCFC
 DR1749  HISTORY     - 20101113 GOOD             MDSHA
 DR1749  HISTORY     - 2015     GOOD             NGS
 DR1749
 DR1749                          STATION DESCRIPTION
 DR1749
 DR1749'DESCRIBED BY RIVERSIDE COUNTY FLOOD CONTROL 2010 (WO)
 DR1749'THE MARK IS LOCATED ABOUT 9.4 MI (15.1 KM) WEST-NORTHWEST OF BIG POOL,
 DR1749'9.2 MI (14.8 KM) EAST OF BELLEGROVE, 0.8 MI (1.3 KM) EAST-SOUTHEAST OF
 DR1749'HANCOCK AND ON THE WESTERN MARYLAND RAIL TRAIL.  OWNERSHIP--MARYLAND
 DR1749'PARK SERVICE.
 DR1749'
 DR1749'TO REACH THE MARK FROM THE INTERSTATE (I-70) PROCEED WEST ALONG MD 144
 DR1749'(E MAIN ST) APPROXIMATELY 0.6 MI (1.0 KM) FROM OFF RAMPS AT EXIT-3.
 DR1749'THEN TURN LEFT IN TO WESTERN MARYLAND RAIL TRAIL, HANCOCK COAL TRESTLE
 DR1749'(PARK AND RIDE) DIRECTLY OPPOSITE TO AMERICAN LEGION POST NUMBER 26.
 DR1749'THEN PROCEED APPROXIMATELY 0.1 MI (0.2 KM) TO THE END OF THE PARKING
 DR1749'LOT TO ASPHALT SIDEWALK, PROCEED APPROXIMATELY 450 FT (137.2 M) ALONG
 DR1749'SIDEWALK AT THE JUNCTION OF WESTERN MARYLAND RAIL TRAIL.  MARK IS ON
 DR1749'THE SOUTH SIDE OF THE WESTERN MARYLAND RAIL TRAIL AND SE OF THE
 DR1749'JUNCTION OF THE ASPHALT SIDEWALK AND WESTERN MARYLAND RAIL TRAIL.
 DR1749'
 DR1749'TO REACH FROM THE WIDMEYER MEMORIAL PARK, HANCOCK MD PROCEED EASTERLY
 DR1749'ALONG MD 144 (W MAIN ST) APPROXIMATELY 1.4 MI (2.3 KM) TO WESTERN
 DR1749'MARYLAND RAIL TRAIL, HANCOCK COAL TRESTLE (PARK AND RIDE) DIRECTLY
 DR1749'OPPOSITE TO AMERICAN LEGION POST NUMBER 26.  THEN PROCEED
 DR1749'APPROXIMATELY 0.1 MI (0.2 KM) TO THE END OF THE PARKING LOT TO ASPHALT
 DR1749'SIDEWALK, PROCEED APPROXIMATELY 450 FT (137.2 M) ALONG SIDEWALK AT THE
 DR1749'JUNCTION OF WESTERN MARYLAND RAIL TRAIL.  MARK IS ON THE SOUTH SIDE OF
 DR1749'THE WESTERN MARYLAND RAIL TRAIL AND SE OF THE JUNCTION OF THE ASPHALT
 DR1749'SIDEWALK AND WESTERN MARYLAND RAIL TRAIL.
 DR1749'
 DR1749'THE MARK IS 44.1 FT (13.4 M) SOUTH OF THE SOUTH STEEL GATE POST OF THE
 DR1749'GATE BLOCKING THE ACCESS ROAD CONNECTING THE PARKING LOT AND THE RAIL
 DR1749'TRAIL.  THE MARK IS 66 FT (20.1 M) PLUS OR MINUS SOUTHEAST OF THE
 DR1749'EXTERNAL OF THE CURVED PAVEMENT AT THE INTERSECTION OF THE ACCESS ROAD
 DR1749'AND THE RAIL TRAIL.  IT IS 40.4 FT (12.3 M) SOUTH OF THE SOUTHWESTERLY
 DR1749'OF TWO STEEL I-BEAMS CONNECTED BY WOOD RAILS.  IT IS 3.6 FT (1.1 M)
 DR1749'SOUTHWEST OF THE WEST EDGE OF THE PAVED RAIL TRAIL.
 DR1749'
 DR1749'PLEASE DO NOT MARK UP, PAINT, PLACE RIBBON, WITNESS POSTS OR IN ANY
 DR1749'OTHER WAY LEAVE MARKINGS, BY ORDER OF THE PARK SERVICE.
 DR1749
 DR1749                          STATION RECOVERY (2010)
 DR1749
 DR1749'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (TPB)
 DR1749'FECOVERED AS DESCRIBED.
 DR1749
 DR1749                          STATION RECOVERY (2015)
 DR1749
 DR1749'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2015 (SEB)
 DR1749'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR1750 ***********************************************************************
 DR1750  DESIGNATION -  HANCOCK CBL 150
 DR1750  PID         -  DR1750
 DR1750  STATE/COUNTY-  MD/WASHINGTON
 DR1750  COUNTRY     -  US
 DR1750  USGS QUAD   -  HANCOCK (2016)
 DR1750
 DR1750                         *CURRENT SURVEY CONTROL
 DR1750  ______________________________________________________________________
 DR1750* NAD 83(1986) POSITION- 39 41 52.7    (N) 078 10 33.6    (W)   HD_HELD2
 DR1750* NAVD 88 ORTHO HEIGHT -   131.317 (meters)      430.83  (feet) ADJUSTED
 DR1750  ______________________________________________________________________
 DR1750  GEOID HEIGHT    -        -34.033 (meters)                     GEOID18
 DR1750  DYNAMIC HEIGHT  -        131.242 (meters)      430.58  (feet) COMP
 DR1750  MODELED GRAVITY -    980,051.7   (mgal)                       NAVD 88
 DR1750
 DR1750  VERT ORDER      -  FIRST     CLASS II
 DR1750
 DR1750.The horizontal coordinates were established by autonomous hand held GPS
 DR1750.observations and have an estimated accuracy of +/- 10 meters.
 DR1750
 DR1750.The orthometric height was determined by differential leveling and
 DR1750.adjusted by the NATIONAL GEODETIC SURVEY
 DR1750.in July 2019.
 DR1750
 DR1750.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR1750.GEOID18 height accuracy estimate available here.
 DR1750
 DR1750.Click photographs - Photos may exist for this station.
 DR1750
 DR1750.The dynamic height is computed by dividing the NAVD 88
 DR1750.geopotential number by the normal gravity value computed on the
 DR1750.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR1750.degrees latitude (g = 980.6199 gals.).
 DR1750
 DR1750.The modeled gravity was interpolated from observed gravity values.
 DR1750
 DR1750;                    North         East    Units  Estimated Accuracy
 DR1750;SPC MD       -   226,146.      299,133.      MT  (+/- 10 meters HH2 GPS)
 DR1750
 DR1750_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD4213298049(NAD 83)
 DR1750
 DR1750                          SUPERSEDED SURVEY CONTROL
 DR1750
 DR1750.No superseded survey control is available for this station.
 DR1750
 DR1750_MARKER: DQ = CALIBRATION BASE LINE DISK
 DR1750_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR1750_STAMPING: CBL 150 2011
 DR1750_MARK LOGO: NGS
 DR1750_PROJECTION: FLUSH
 DR1750_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR1750_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR1750+STABILITY: SURFACE MOTION
 DR1750_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 DR1750+SATELLITE: SATELLITE OBSERVATIONS - October 09, 2020
 DR1750
 DR1750  HISTORY     - Date     Condition        Report By
 DR1750  HISTORY     - 20101113 MONUMENTED       RCFC
 DR1750  HISTORY     - 20101113 GOOD             MDSHA
 DR1750  HISTORY     - 2015     GOOD             NGS
 DR1750  HISTORY     - 20201009 GOOD             WTBALL
 DR1750
 DR1750                          STATION DESCRIPTION
 DR1750
 DR1750'DESCRIBED BY RIVERSIDE COUNTY FLOOD CONTROL 2010 (WO)
 DR1750'THE MARK IS LOCATED ABOUT 10.0 MI (16.1 KM) WEST-NORTHWEST OF BIG
 DR1750'POOL, 8.7 MI (14.0 KM) EAST OF BELLEGROVE, IN THE TOWN OF HANCOCK AND
 DR1750'ON THE WESTERN MARYLAND RAIL TRAIL.  OWNERSHIP--MARYLAND PARK SERVICE.
 DR1750'TO REACH THE MARK FROM THE INTERSTATE (I-70) PROCEED WEST ALONG MD 144
 DR1750'( E MAIN ST) APPROXIMATELY 1.4 MI (2.3 KM) FROM OFF RAMPS AT EXIT-3.
 DR1750'TURN LEFT ON TO CHURCH STREET PROCEED APPROXIMATELY 300 FT (91.4 M) TO
 DR1750'THE WESTERN MARYLAND RAIL TRAIL.  FOLLOW THE RAIL TRAIL TO THE
 DR1750'SOUTHEAST 150 M (492.1 FT) TO THE MARK ON THE LEFT.
 DR1750'
 DR1750'IT IS 492.1 FT (150.0 M) SOUTHEAST OF THE ZERO 0 METER MARK, 81.5 FT
 DR1750'(24.8 M) SOUTHEAST OF THE SOUTHWEST REAR CORNER OF A WHITE FRAME SHED
 DR1750'WITH CORRUGATED METAL SIDING, 43.1 FT (13.1 M) WEST OF THE SOUTH
 DR1750'CORNER OF A WHITE FRAME SHED, 25.1 FT (7.7 M) SOUTHWEST OF THE WEST
 DR1750'CORNER OF ANOTHER WHITE FRAME SHED AND CONCRETE RETAINING WALL, 2.3 FT
 DR1750'(0.7 M) NORTH-NORTHEAST OF THE NORTH EDGE OF THE PAVED RAIL TRAIL AND
 DR1750'SET IN THE TOP OF A 12-IN (30 CM) 30 CM) ROUND CONCRETE POST.
 DR1750'
 DR1750'PLEASE DO NOT MARK UP, PAINT, PLACE RIBBON, WITNESS POSTS OR IN ANY
 DR1750'OTHER WAY LEAVE MARKINGS, BY ORDER OF THE PARK SERVICE.
 DR1750
 DR1750                          STATION RECOVERY (2010)
 DR1750
 DR1750'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (TPB)
 DR1750'RECOVERED AS DESCRIBED.
 DR1750
 DR1750                          STATION RECOVERY (2015)
 DR1750
 DR1750'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2015 (SEB)
 DR1750'RECOVERED IN GOOD CONDITION.
 DR1750
 DR1750                          STATION RECOVERY (2020)
 DR1750
 DR1750'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2020 (JMB)
 DR1750'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR1751 ***********************************************************************
 DR1751  DESIGNATION -  HANCOCK CBL 430
 DR1751  PID         -  DR1751
 DR1751  STATE/COUNTY-  MD/WASHINGTON
 DR1751  COUNTRY     -  US
 DR1751  USGS QUAD   -  HANCOCK (2016)
 DR1751
 DR1751                         *CURRENT SURVEY CONTROL
 DR1751  ______________________________________________________________________
 DR1751* NAD 83(1986) POSITION- 39 41 50.8    (N) 078 10 22.2    (W)   HD_HELD2
 DR1751* NAVD 88 ORTHO HEIGHT -   130.654 (meters)      428.65  (feet) ADJUSTED
 DR1751  ______________________________________________________________________
 DR1751  GEOID HEIGHT    -        -34.038 (meters)                     GEOID18
 DR1751  DYNAMIC HEIGHT  -        130.579 (meters)      428.41  (feet) COMP
 DR1751  MODELED GRAVITY -    980,051.3   (mgal)                       NAVD 88
 DR1751
 DR1751  VERT ORDER      -  FIRST     CLASS II
 DR1751
 DR1751.The horizontal coordinates were established by autonomous hand held GPS
 DR1751.observations and have an estimated accuracy of +/- 10 meters.
 DR1751
 DR1751.The orthometric height was determined by differential leveling and
 DR1751.adjusted by the NATIONAL GEODETIC SURVEY
 DR1751.in July 2019.
 DR1751
 DR1751.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR1751.GEOID18 height accuracy estimate available here.
 DR1751
 DR1751.Click photographs - Photos may exist for this station.
 DR1751
 DR1751.The dynamic height is computed by dividing the NAVD 88
 DR1751.geopotential number by the normal gravity value computed on the
 DR1751.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DR1751.degrees latitude (g = 980.6199 gals.).
 DR1751
 DR1751.The modeled gravity was interpolated from observed gravity values.
 DR1751
 DR1751;                    North         East    Units  Estimated Accuracy
 DR1751;SPC MD       -   226,083.      299,404.      MT  (+/- 10 meters HH2 GPS)
 DR1751
 DR1751_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD4240697999(NAD 83)
 DR1751
 DR1751                          SUPERSEDED SURVEY CONTROL
 DR1751
 DR1751.No superseded survey control is available for this station.
 DR1751
 DR1751_MARKER: DQ = CALIBRATION BASE LINE DISK
 DR1751_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR1751_STAMPING: CBL 430 2011
 DR1751_MARK LOGO: NGS
 DR1751_PROJECTION: FLUSH
 DR1751_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR1751_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR1751+STABILITY: SURFACE MOTION
 DR1751
 DR1751  HISTORY     - Date     Condition        Report By
 DR1751  HISTORY     - 20101113 MONUMENTED       RCFC
 DR1751  HISTORY     - 20101113 GOOD             MDSHA
 DR1751  HISTORY     - 2015     GOOD             NGS
 DR1751
 DR1751                          STATION DESCRIPTION
 DR1751
 DR1751'DESCRIBED BY RIVERSIDE COUNTY FLOOD CONTROL 2010 (WO)
 DR1751'THE MARK IS LOCATED ABOUT 9.8 MI (15.8 KM) WEST-NORTHWEST OF BIG POOL,
 DR1751'8.8 MI (14.2 KM) EAST OF BELLEGROVE, IN THE TOWN OF HANCOCK AND ON THE
 DR1751'WESTERN MARYLAND RAIL TRAIL.  OWNERSHIP--MARYLAND PARK SERVICE.
 DR1751'
 DR1751'TO REACH THE MARK FROM THE INTERSTATE (I-70) PROCEED WEST ALONG MD 144
 DR1751'(E MAIN ST) APPROXIMATELY 1.4 MI (2.3 KM) FROM OFF RAMPS AT EXIT 3.
 DR1751'TURN LEFT ON CHURCH STREET AND PROCEED APPROXIMATELY 300 FT (91.4 M)
 DR1751'TO THE WESTERN MARYLAND RAIL TRAIL.  FOLLOW THE RAIL TRAIL TO THE
 DR1751'SOUTHEAST 430 M (1410.8 FT) TO THE MARK ON THE LEFT.   IT IS BEHIND A
 DR1751'MULTIPLE SIDED BUILDING HOUSING CAPITAL MOTORS.  IT IS 49.6 FT (15.1
 DR1751'M) SOUTH-SOUTHEAST OF THE SOUTHWEST CORNER OF THE BUILDING (REDDISH
 DR1751'TEXTURED BRICK SIDE), 71.6 FT (21.8 M) WEST OF THE SOUTHEAST (WHITE
 DR1751'METAL SIDED) CORNER OF THE BUILDING, 36.9 FT (11.2 M) PERPENDICULAR TO
 DR1751'THE SOUTHWEST OF THE GRAY CONCRETE BLOCK PORTION OF THE BUILDING AND
 DR1751'1.16 FT (0.4 M) NORTH-NORTHEAST OF THE NORTH EDGE OF THE RAIL TRAIL.
 DR1751'
 DR1751'PLEASE DO NOT MARK UP, PAINT, PLACE RIBBON, WITNESS POSTS OR IN ANY
 DR1751'OTHER WAY LEAVE MARKINGS, BY ORDER OF THE PARK SERVICE.
 DR1751
 DR1751                          STATION RECOVERY (2010)
 DR1751
 DR1751'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2010 (TPB)
 DR1751'RECOVERED AS DESCRIBED.
 DR1751
 DR1751                          STATION RECOVERY (2015)
 DR1751
 DR1751'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2015 (SEB)
 DR1751'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4909 ***********************************************************************
 JV4909  DESIGNATION -  HANDY
 JV4909  PID         -  JV4909
 JV4909  STATE/COUNTY-  MD/KENT
 JV4909  COUNTRY     -  US
 JV4909  USGS QUAD   -  HANESVILLE (2016)
 JV4909
 JV4909                         *CURRENT SURVEY CONTROL
 JV4909  ______________________________________________________________________
 JV4909* NAD 83(1991) POSITION- 39 17 20.34494(N) 076 10 57.71965(W)   ADJUSTED
 JV4909* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV4909  ______________________________________________________________________
 JV4909  GEOID HEIGHT    -        -33.271 (meters)                     GEOID18
 JV4909  LAPLACE CORR    -         -1.46  (seconds)                    DEFLEC18
 JV4909  HORZ ORDER      -  THIRD
 JV4909
 JV4909.The horizontal coordinates were established by classical geodetic methods
 JV4909.and adjusted by the National Geodetic Survey in January 1992.
 JV4909
 JV4909.The orthometric height was scaled from a topographic map.
 JV4909
 JV4909.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4909.GEOID18 height accuracy estimate available here.
 JV4909
 JV4909.Click photographs - Photos may exist for this station.
 JV4909
 JV4909.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4909
 JV4909. The following values were computed from the NAD 83(1991) position.
 JV4909
 JV4909;                    North         East     Units Scale Factor Converg.
 JV4909;SPC MD       -   180,403.188   470,508.219   MT  0.99997580   +0 30 46.7
 JV4909;SPC MD       -   591,872.79  1,543,659.05   sFT  0.99997580   +0 30 46.7
 JV4909;UTM  18      - 4,349,512.978   398,004.386   MT  0.99972809   -0 44 56.4
 JV4909
 JV4909!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4909!SPC MD       -   1.00000400  x   0.99997580  =   0.99997980
 JV4909!UTM  18      -   1.00000400  x   0.99972809  =   0.99973209
 JV4909
 JV4909:                Primary Azimuth Mark                     Grid Az
 JV4909:SPC MD       -  LIGHTHOUSE S OF POOLES IS                249 38 43.8
 JV4909:UTM  18      -  LIGHTHOUSE S OF POOLES IS                250 54 26.9
 JV4909
 JV4909_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9800449512(NAD 83)
 JV4909
 JV4909|---------------------------------------------------------------------|
 JV4909| PID    Reference Object                     Distance      Geod. Az  |
 JV4909|                                                           dddmmss.s |
 JV4909| CA9495 HANDY RM 1                           50.666 METERS 11704     |
 JV4909| JV4911 YACHT CLUB WINDMILL                 APPROX. 2.1 KM 1540906.2 |
 JV4909| JV4902 STOOPS POINT TOWER 9                APPROX. 1.8 KM 2343047.4 |
 JV4909| CA9496 HANDY RM 2                           44.022 METERS 23506     |
 JV4909| JV5346 LIGHTHOUSE S OF POOLES IS           APPROX. 8.7 KM 2500930.5 |
 JV4909|---------------------------------------------------------------------|
 JV4909
 JV4909                          SUPERSEDED SURVEY CONTROL
 JV4909
 JV4909  NAD 83(1986)-  39 17 20.33820(N)    076 10 57.72788(W) AD(       ) 3
 JV4909  NAD 27      -  39 17 19.94400(N)    076 10 58.90000(W) AD(       ) 3
 JV4909
 JV4909.Superseded values are not recommended for survey control.
 JV4909
 JV4909.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4909.See file dsdata.pdf to determine how the superseded data were derived.
 JV4909
 JV4909_MARKER: DS = TRIANGULATION STATION DISK
 JV4909_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4909_STAMPING: HANDY 1935
 JV4909_MARK LOGO: CGS
 JV4909_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4909+STABILITY: SURFACE MOTION
 JV4909
 JV4909  HISTORY     - Date     Condition        Report By
 JV4909  HISTORY     - 1935     MONUMENTED       CGS
 JV4909  HISTORY     - 1961     GOOD             CGS
 JV4909  HISTORY     - 1974     MARK NOT FOUND   MDDNR
 JV4909
 JV4909                          STATION DESCRIPTION
 JV4909
 JV4909'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JCP)
 JV4909'STATION HANDY IS ON THE EASTERN SHORE OF CHESAPEAKE BAY AT THE
 JV4909'S ENTRANCE TO WORTON CREEK, ON A POINT OF LAND KNOWN AS HANDY
 JV4909'POINT.  IT IS ON THE PROPERTY OWNED BY MRS. E.R. FENNIMORE, WHICH
 JV4909'IS KNOWN AS HANDY POINT FARM.
 JV4909'
 JV4909'THE STATION IS LOCATED IN A FIELD USED AS A LANDING FIELD FOR
 JV4909'AIRCRAFT AND IS 56.5 METERS NORTHERLY FROM THE NE CORNER OF A
 JV4909'FENCE AROUND A SMALL ORCHARD, 63.5 METERS E OF BLUFF ON BAY SHORE
 JV4909'AND 82.4 METERS SOUTHWESTERLY OF THE SW CORNER OF A HANGAR.
 JV4909'
 JV4909'SURFACE MARK IS A STANDARD BRONZE DISK SET IN A SQUARE CONCRETE
 JV4909'BLOCK, AND IS 16 INCHES BELOW THE SURFACE
 JV4909'OF THE GROUND.  UNDERGROUND MARK IS A STANDARD BRONZE DISK SET IN
 JV4909'CONCRETE AND IS 3 FEET BELOW THE SURFACE
 JV4909'OF THE GROUND.
 JV4909'
 JV4909'REFERENCE MARK NO.1 IS A STANDARD BRONZE DISK.
 JV4909'SET IN A CONCRETE BLOCK PROJECTING ABOVE THE SURFACE OF
 JV4909'THE GROUND, AND IS AT THE INTERSECTION OF TWO FENCE LINES AT THE
 JV4909'NW CORNER OF THE GARDEN AND THE ORCHARD.
 JV4909'
 JV4909'REFERENCE MARK NO.2 IS A STANDARD BRONZE DISK.
 JV4909'SET IN A CONCRETE BLOCK PROJECTING ABOVE THE SURFACE OF
 JV4909'THE GROUND, AND IN THE E-W FENCE LINE 81 METERS W OF REFERENCE
 JV4909'MARK NO.1.
 JV4909'
 JV4909'TO REACH STATION, TAKE 9-FOOT PAVED HIGHWAY N OUT OF FAIRLEE
 JV4909'TO J.W. IVENS STORE.  TURN W ON DIRT ROAD AND FOLLOW 2 MILES TO
 JV4909'Y, TAKE RIGHT FORK WHICH LEADS DIRECTLY TO HANDY POINT FARM.
 JV4909
 JV4909                          STATION RECOVERY (1961)
 JV4909
 JV4909'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV4909'REFERENCE MARK NO.2 RECOVERED IN GOOD CONDITION.  REFERENCE MARK
 JV4909'NO.1 HAS BEEN DESTROYED BY CULTIVATION OF THE FIELD.  THE STATION
 JV4909'MARK IS UNDERGROUND IN A CULTIVATED FIELD AND WAS NOT
 JV4909'UNCOVERED.  THE HANGER MENTIONED IN THE ORIGINAL DESCRIPTION HAS
 JV4909'BEEN RAZED AND THE FENCE AROUND THE SMALL ORCHARD MOVED.
 JV4909'REFERENCE MARK NO.2 IS ON THE NORTHWESTERLY SIDE OF THE ORCHARD,
 JV4909'186.3 FT. SW OF A LARGE OAK TREE IN CORNER OF RAIL FENCE, 55.9 FT.
 JV4909'S OF ANOTHER CORNER OF RAIL FENCE AND 19 FT. W OF THE THIRD APPLE
 JV4909'TREE FROM THE NORTH ON THE MOST WESTERLY ROW OF TREES.
 JV4909
 JV4909                          STATION RECOVERY (1974)
 JV4909
 JV4909'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 JV4909'RM 2 RECOVERED AS DESCRIBED IN GOOD CONDITION.  STATION
 JV4909'UNDERGROUND MARK NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1577 ***********************************************************************
 HU1577  DESIGNATION -  HANDY HAMMOCK
 HU1577  PID         -  HU1577
 HU1577  STATE/COUNTY-  MD/WORCESTER
 HU1577  COUNTRY     -  US
 HU1577  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1577
 HU1577                         *CURRENT SURVEY CONTROL
 HU1577  ______________________________________________________________________
 HU1577* NAD 83(1993) POSITION- 38 12 32.25221(N) 075 14 55.06895(W)   ADJUSTED
 HU1577* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1577  ______________________________________________________________________
 HU1577  GEOID HEIGHT    -        -36.198 (meters)                     GEOID18
 HU1577  LAPLACE CORR    -         -0.34  (seconds)                    DEFLEC18
 HU1577  HORZ ORDER      -  THIRD
 HU1577
 HU1577.The horizontal coordinates were established by classical geodetic methods
 HU1577.and adjusted by the National Geodetic Survey in November 1994.
 HU1577
 HU1577.The orthometric height was scaled from a topographic map.
 HU1577
 HU1577.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1577.GEOID18 height accuracy estimate available here.
 HU1577
 HU1577.Click photographs - Photos may exist for this station.
 HU1577
 HU1577.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1577
 HU1577. The following values were computed from the NAD 83(1993) position.
 HU1577
 HU1577;                    North         East     Units Scale Factor Converg.
 HU1577;SPC MD       -    61,668.465   553,382.817   MT  1.00001709   +1 05 57.2
 HU1577;SPC MD       -   202,323.96  1,815,556.79   sFT  1.00001709   +1 05 57.2
 HU1577;UTM  18      - 4,229,029.075   478,232.996   MT  0.99960584   -0 09 13.6
 HU1577
 HU1577!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1577!SPC MD       -   1.00000556  x   1.00001709  =   1.00002265
 HU1577!UTM  18      -   1.00000556  x   0.99960584  =   0.99961140
 HU1577
 HU1577:                Primary Azimuth Mark                     Grid Az
 HU1577:SPC MD       -  NORTH BEACH LSS                          096 39 56.1
 HU1577:UTM  18      -  NORTH BEACH LSS                          097 55 06.9
 HU1577
 HU1577_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7823229029(NAD 83)
 HU1577
 HU1577|---------------------------------------------------------------------|
 HU1577| PID    Reference Object                     Distance      Geod. Az  |
 HU1577|                                                           dddmmss.s |
 HU1577| HU1597 NORTH BEACH LSS                     APPROX. 8.2 KM 0974553.3 |
 HU1577| DC7358 HANDY HAMMOCK RM 1                   15.360 METERS 14127     |
 HU1577| HU1599 ROBINS MARSH                        APPROX. 5.8 KM 1813515.1 |
 HU1577| DC7359 HANDY HAMMOCK RM 2                   18.040 METERS 34735     |
 HU1577|---------------------------------------------------------------------|
 HU1577
 HU1577                          SUPERSEDED SURVEY CONTROL
 HU1577
 HU1577  NAD 83(1991)-  38 12 32.25216(N)    075 14 55.06996(W) AD(       ) 3
 HU1577  NAD 83(1986)-  38 12 32.23987(N)    075 14 55.10148(W) AD(       ) 3
 HU1577  NAD 27      -  38 12 31.81583(N)    075 14 56.41365(W) AD(       ) 3
 HU1577  USSD        -  38 12 31.96600(N)    075 14 56.15800(W) AD(       ) 3
 HU1577
 HU1577.Superseded values are not recommended for survey control.
 HU1577
 HU1577.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1577.See file dsdata.pdf to determine how the superseded data were derived.
 HU1577
 HU1577_MARKER: H = DRILL HOLE
 HU1577_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1577
 HU1577  HISTORY     - Date     Condition        Report By
 HU1577  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1577  HISTORY     - 1933     GOOD             CGS
 HU1577  HISTORY     - 1934     SEE DESCRIPTION  CGS
 HU1577  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1577  HISTORY     - 1958     MARK NOT FOUND   CGS
 HU1577  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1577
 HU1577                          STATION DESCRIPTION
 HU1577
 HU1577'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1577'ON THE WESTERN SHORE OF THE (UPPER END OF CHINCOTEAGUE BAY) AND
 HU1577'WESTERN SIDE OF ENTRANCE TO NEWPORT BAY, ON SOLID LAND PARTLY
 HU1577'SURROUNDED BY MARSH KNOWN AS HANDY HAMMOCK.  THIS KNOLL IS 10 FEET
 HU1577'ABOVE HIGH WATER AND 140 YARDS WNW FROM THE EXTREME END OF THE
 HU1577'NARROW POINT ON WHICH IT IS SITUATED.  IT IS ABOUT 35 YARDS
 HU1577'W OF ANOTHER SHORE POINT, 30 FEET SSW OF SHORE AT A SAND BEACH,
 HU1577'20 YARDS N OF A THORN BUSH, AND 50 YARDS NNW OF A SMALL POOL
 HU1577'20 FEET SQUARE.  STATION MARK IS CENTER OF A STANDARD CEMENT
 HU1577'MONUMENT OF THE MARYLAND SHELL FISH SURVEY WHICH PROJECTS 3
 HU1577'TO 5 INCHES ABOVE SURFACE WHICH IS MADE OF CONCRETE 2
 HU1577'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1577'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1577'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1577'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1577'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1577'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1577'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1577'THE LOCATION OF THE STATION.
 HU1577'
 HU1577'DISTANCES AND AZIMUTHS TO VARIOUS POINTS OF REFERENCE ARE AS
 HU1577'FOLLOWS--MYRTLE TREE, 50 YARDS, S 33 DEG 28 MIN W.  CHIMNEY ON LEFT
 HU1577'END OF LARGE WHITE HOUSE, 1-1/4 MILES, S 49 DEG 43 MIN W.  CHIMNEY
 HU1577'ON RIGHT END OF ANOTHER LARGE WHITE BUILDING, 2-1/4 MILES, S 54 DEG
 HU1577'34 MIN W.  CENTER OF LARGE WHITE HOUSE, 1-1/2 MILES, S 64 DEG
 HU1577'28 MIN W.  RIGHT END OF NEW BARN, 1-1/2 MILES, S 84 DEG
 HU1577'02 MIN W.  WINDMILL, 1/2 MILE, N 40 DEG 32 MIN W.  CHIMNEY OF HOUSE
 HU1577'WITH TWO PIAZZAS, 1/2 MILE, N 37 DEG 57 MIN W.  CHIMNEY OF LARGE
 HU1577'UNPAINTED HOUSE, 1 MILE, N 10 DEG 56 MIN W.  MIDDLE OF CLUMP OF
 HU1577'12 PERSIMMON TREES, 50 YARDS, N 5 DEG 21 MIN E.  CHIMNEY ON
 HU1577'NEAR END OF LARGE, WHITE HOUSE, 2-1/4 MILES, N 27 DEG 37 MIN E.
 HU1577
 HU1577                          STATION RECOVERY (1933)
 HU1577
 HU1577'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (IER)
 HU1577'STATION RECOVERED IN PERFECT CONDITION.  DESCRIPTION ADEQUATE.  TWO
 HU1577'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE, IN
 HU1577'THE TOP OF A TILE AS DESCRIBED.  REFERENCE MARKS
 HU1577'STAMPED NO.1 1933 AND NO.2 1933.
 HU1577
 HU1577                          STATION RECOVERY (1934)
 HU1577
 HU1577'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1577'STATION MARK FOUND WASHED OUT AND LYING ON SAND.  REFERENCE MARK
 HU1577'NO.1 ESTABLISHED BY RITTENBURG IN 1933, WAS FOUND IN PLACE IN GOOD
 HU1577'CONDITION.  NO TRACE OF REFERENCE MARK NO.2, ALSO ESTABLISHED IN
 HU1577'1933, COULD BE FOUND.
 HU1577
 HU1577                          STATION RECOVERY (1942)
 HU1577
 HU1577'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1577'THE FOLLOWING DISCREPANCY WAS NOTED IN THE FIELD WITH THE
 HU1577'ORIGINAL DESCRIPTION.
 HU1577'
 HU1577'25 YARDS W OF ANOTHER SHORT POINT INSTEAD OF 35 YARDS.
 HU1577'
 HU1577'THE STATION WAS FOUND WASHED OUT IN 1934 AND REFERENCE MARK
 HU1577'NO.2 COULD NOT BE FOUND.  REFERENCE MARK NO.1 IS LOCATED ON THE
 HU1577'WESTERN SHORE OF THE UPPER END OF CHINCOTEAGUE BAY AND WESTERN
 HU1577'SIDE OF NEWPORT BAY, ON SOLID LAND PARTLY SURROUNDED BY MARSH
 HU1577'KNOWN AS HANDY HAMMOCK.  THIS KNOLL IS 10 FEET ABOVE HIGH WATER
 HU1577'AND 140 YARDS WNW FROM THE EXTREME END OF THE NARROW POINT
 HU1577'ON WHICH IT IS SITUATED, 7.5 FEET NE OF A SMALL CEDAR TREE AND
 HU1577'68.0 FEET SE OF ANOTHER SMALL CEDAR TREE.  THE MARK IS A
 HU1577'BRONZE DISK REFERENCE MARK, STAMPED NO.1 1933, SET IN THE TOP OF AN
 HU1577'8-INCH CONCRETE-FILLED TERRA-COTTA PIPE, WHICH EXTENDS 6
 HU1577'INCHES ABOVE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1577
 HU1577                          STATION RECOVERY (1958)
 HU1577
 HU1577'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1577'THE LOCATION OF THE STATION WAS VISITED IN AN ATTEMPT TO RECOVER
 HU1577'REFERENCE MARK NO. 1 AND NO. 2.  IT IS ASSUMED THAT THE BANK IN
 HU1577'WHICH THEY WERE LOCATED HAS WASHED BACK AND DESTROYED THE
 HU1577'REFERENCE MARKS.
 HU1577
 HU1577                          STATION RECOVERY (1962)
 HU1577
 HU1577'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1577'STATION OR REFERENCE MARKS COULD NOT BE FOUND AFTER A THOROUGH
 HU1577'SEARCH OF THE AREA BY TWO MEN FOR ABOUT A HALF AN HOUR.  THIS
 HU1577'STATION SHOULD BE CLASSIFIED AS LOST DUE TO THE BANK BEING WASHED
 HU1577'AWAY AT THIS POINT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9408 ***********************************************************************
 DR9408  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9408  DESIGNATION -  HANDY RESET
 DR9408  PID         -  DR9408
 DR9408  STATE/COUNTY-  MD/KENT
 DR9408  COUNTRY     -  US
 DR9408  USGS QUAD   -  HANESVILLE (2016)
 DR9408
 DR9408                         *CURRENT SURVEY CONTROL
 DR9408  ______________________________________________________________________
 DR9408* NAD 83(2011) POSITION- 39 16 13.41538(N) 076 11 01.78588(W)   ADJUSTED
 DR9408* NAD 83(2011) ELLIP HT-   -22.718 (meters)        (09/18/23)   ADJUSTED
 DR9408* NAD 83(2011) EPOCH   -  2010.00
 DR9408* NAVD 88 ORTHO HEIGHT -    10.54  (meters)       34.6   (feet) GPS OBS
 DR9408  ______________________________________________________________________
 DR9408  GEOID HEIGHT    -        -33.266 (meters)                     GEOID18
 DR9408  NAD 83(2011) X  -  1,180,751.242 (meters)                     COMP
 DR9408  NAD 83(2011) Y  - -4,801,307.839 (meters)                     COMP
 DR9408  NAD 83(2011) Z  -  4,015,586.755 (meters)                     COMP
 DR9408  LAPLACE CORR    -         -1.79  (seconds)                    DEFLEC18
 DR9408
 DR9408  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9408  Standards:
 DR9408         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9408            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9408  -------------------------------------------------------------------
 DR9408  NETWORK    0.79   1.90           0.34   0.30   0.97     -0.15540860
 DR9408  -------------------------------------------------------------------
 DR9408  Click here for local accuracies and other accuracy information.
 DR9408
 DR9408.The horizontal coordinates were established by GPS observations
 DR9408.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9408
 DR9408.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9408.been affixed to the stable North American tectonic plate. See 
 DR9408.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9408
 DR9408.The horizontal coordinates are valid at the epoch date displayed above
 DR9408.which is a decimal equivalence of Year/Month/Day.
 DR9408
 DR9408.The orthometric height was determined by GPS observations and a
 DR9408.high-resolution geoid model using precise GPS observation and
 DR9408.processing techniques.
 DR9408
 DR9408.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9408.GEOID18 height accuracy estimate available here.
 DR9408
 DR9408.Click photographs - Photos may exist for this station.
 DR9408
 DR9408.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9408
 DR9408.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9408
 DR9408.The ellipsoidal height was determined by GPS observations
 DR9408.and is referenced to NAD 83.
 DR9408
 DR9408. The following values were computed from the NAD 83(2011) position.
 DR9408
 DR9408;                    North         East     Units Scale Factor Converg.
 DR9408;SPC MD       -   178,338.403   470,429.232   MT  0.99997351   +0 30 44.1
 DR9408;SPC MD       -   585,098.58  1,543,399.91   sFT  0.99997351   +0 30 44.1
 DR9408;UTM  18      - 4,347,450.940   397,879.980   MT  0.99972840   -0 44 57.9
 DR9408
 DR9408!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9408!SPC MD       -   1.00000356  x   0.99997351  =   0.99997707
 DR9408!UTM  18      -   1.00000356  x   0.99972840  =   0.99973196
 DR9408
 DR9408_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9787947450(NAD 83)
 DR9408
 DR9408                          SUPERSEDED SURVEY CONTROL
 DR9408
 DR9408.No superseded survey control is available for this station.
 DR9408
 DR9408_MARKER: DD = SURVEY DISK
 DR9408_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9408_STAMPING: HANDY RESET 2021
 DR9408_MARK LOGO: MD-029
 DR9408_PROJECTION: RECESSED 5 CENTIMETERS
 DR9408_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9408_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9408+STABILITY: SURFACE MOTION
 DR9408_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9408+SATELLITE: SATELLITE OBSERVATIONS - December 26, 2021
 DR9408
 DR9408  HISTORY     - Date     Condition        Report By
 DR9408  HISTORY     - 20211226 MONUMENTED       MDSHA
 DR9408  HISTORY     - 20250731 GOOD             PROFLN
 DR9408
 DR9408                          STATION DESCRIPTION
 DR9408
 DR9408'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9408'THE MARK IS LOCATED ABOUT 7.6 MI (12.2 KM) NORTHWEST OF CHESTERTOWN,
 DR9408'4.9 MI (7.9 KM) WEST OF WORTON, 3.4 MI (5.5 KM) NORTH OF FAIRLEE AND
 DR9408'2.6 MI (4.2 KM) WEST OF HANESVILLE.
 DR9408'
 DR9408'TO REACH THE MARK FROM THE JUNCTION OF MD 297 AND MD 298 W, GO
 DR9408'SOUTHWEST ON MD 298 W FOR 3.68 MI (5.92 KM) TO AN INTERSECTION.  TURN
 DR9408'RIGHT AND GO WEST ON HANDY POINT ROAD FOR 2.39 MI (3.85 KM) TO THE
 DR9408'MARK ON THE RIGHT.
 DR9408'
 DR9408'THE MARK IS 44.5 FT (13.6 M) EAST-NORTHEAST OF A UTILITY POLE NUMBERED
 DR9408'DPL 30520-26248, 38.5 FT (11.7 M) EAST-NORTHEAST OF THE SOUTHWEST END
 DR9408'OF A 24 INCH (61 CM) CORRUGATED METAL PIPE UNDER THE DRIVEWAY OF 22677
 DR9408'HANDY POINT ROAD, 23.5 FT (7.2 M) SOUTHWEST OF A TELEPHONE PEDESTAL
 DR9408'NUMBERED 74, 12.5 FT (3.8 M) EAST-SOUTHEAST OF THE CENTERLINE OF HANDY
 DR9408'POINT ROAD SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND
 DR9408'ABOUT 0.2 FT (6 CM) LOWER THAN THE GROUND.
 DR9408
 DR9408                          STATION RECOVERY (2025)
 DR9408
 DR9408'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9408'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9409 ***********************************************************************
 DR9409  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9409  DESIGNATION -  HANDY RESET AZ MK
 DR9409  PID         -  DR9409
 DR9409  STATE/COUNTY-  MD/KENT
 DR9409  COUNTRY     -  US
 DR9409  USGS QUAD   -  HANESVILLE (2016)
 DR9409
 DR9409                         *CURRENT SURVEY CONTROL
 DR9409  ______________________________________________________________________
 DR9409* NAD 83(2011) POSITION- 39 16 21.20543(N) 076 11 00.06333(W)   ADJUSTED
 DR9409* NAD 83(2011) ELLIP HT-   -22.831 (meters)        (09/18/23)   ADJUSTED
 DR9409* NAD 83(2011) EPOCH   -  2010.00
 DR9409* NAVD 88 ORTHO HEIGHT -    10.42  (meters)       34.2   (feet) GPS OBS
 DR9409  ______________________________________________________________________
 DR9409  GEOID HEIGHT    -        -33.267 (meters)                     GEOID18
 DR9409  NAD 83(2011) X  -  1,180,755.001 (meters)                     COMP
 DR9409  NAD 83(2011) Y  - -4,801,150.224 (meters)                     COMP
 DR9409  NAD 83(2011) Z  -  4,015,772.664 (meters)                     COMP
 DR9409  LAPLACE CORR    -         -1.76  (seconds)                    DEFLEC18
 DR9409
 DR9409  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9409  Standards:
 DR9409         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9409            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9409  -------------------------------------------------------------------
 DR9409  NETWORK    0.79   1.94           0.34   0.30   0.99     -0.14412210
 DR9409  -------------------------------------------------------------------
 DR9409  Click here for local accuracies and other accuracy information.
 DR9409
 DR9409.The horizontal coordinates were established by GPS observations
 DR9409.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9409
 DR9409.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9409.been affixed to the stable North American tectonic plate. See 
 DR9409.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9409
 DR9409.The horizontal coordinates are valid at the epoch date displayed above
 DR9409.which is a decimal equivalence of Year/Month/Day.
 DR9409
 DR9409.The orthometric height was determined by GPS observations and a
 DR9409.high-resolution geoid model using precise GPS observation and
 DR9409.processing techniques.
 DR9409
 DR9409.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9409.GEOID18 height accuracy estimate available here.
 DR9409
 DR9409.Click photographs - Photos may exist for this station.
 DR9409
 DR9409.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9409
 DR9409.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9409
 DR9409.The ellipsoidal height was determined by GPS observations
 DR9409.and is referenced to NAD 83.
 DR9409
 DR9409. The following values were computed from the NAD 83(2011) position.
 DR9409
 DR9409;                    North         East     Units Scale Factor Converg.
 DR9409;SPC MD       -   178,578.994   470,468.372   MT  0.99997377   +0 30 45.2
 DR9409;SPC MD       -   585,887.92  1,543,528.32   sFT  0.99997377   +0 30 45.2
 DR9409;UTM  18      - 4,347,690.553   397,924.397   MT  0.99972829   -0 44 56.9
 DR9409
 DR9409!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9409!SPC MD       -   1.00000358  x   0.99997377  =   0.99997735
 DR9409!UTM  18      -   1.00000358  x   0.99972829  =   0.99973187
 DR9409
 DR9409_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9792447690(NAD 83)
 DR9409
 DR9409                          SUPERSEDED SURVEY CONTROL
 DR9409
 DR9409.No superseded survey control is available for this station.
 DR9409
 DR9409_MARKER: DD = SURVEY DISK
 DR9409_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9409_STAMPING: HANDY RESET AZ 2021
 DR9409_MARK LOGO: MD-029
 DR9409_PROJECTION: FLUSH
 DR9409_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9409_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9409+STABILITY: SURFACE MOTION
 DR9409
 DR9409  HISTORY     - Date     Condition        Report By
 DR9409  HISTORY     - 20211226 MONUMENTED       MDSHA
 DR9409  HISTORY     - 20250731 GOOD             PROFLN
 DR9409
 DR9409                          STATION DESCRIPTION
 DR9409
 DR9409'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9409'THE MARK IS LOCATED ABOUT 7.6 MI (12.2 KM) NORTHWEST OF CHESTERTOWN,
 DR9409'4.9 MI (7.9 KM) WEST OF WORTON, 3.5 MI (5.6 KM) NORTH OF FAIRLEE AND
 DR9409'2.6 MI (4.2 KM) WEST OF HANESVILLE.
 DR9409'
 DR9409'TO REACH THE MARK FROM THE JUNCTION OF MD 297 AND MD 298 W, GO
 DR9409'SOUTHWEST ON MD 298 W FOR 3.68 MI (5.92 KM) TO AN INTERSECTION.  TURN
 DR9409'RIGHT AND GO WEST ON HANDY POINT ROAD FOR 2.55 MI (4.10 KM) TO THE
 DR9409'MARK ON THE RIGHT.
 DR9409'
 DR9409'THE MARK IS 240.2 FT (73.2 M) SOUTH-SOUTHWEST OF A FIBER OPTIC
 DR9409'PEDESTAL NUMBERED 76, 79.6 FT (24.3 M) NORTHEAST OF A UTILITY POLE
 DR9409'NUMBERED DP AND L 30535-26323, 12.7 FT (3.9 M) EAST-SOUTHEAST OF THE
 DR9409'CENTERLINE OF HANDY POINT ROAD SET IN THE TOP OF A 12-IN (30 CM) ROUND
 DR9409'CONCRETE POST AND ABOUT LEVEL WITH THE ROAD.
 DR9409
 DR9409                          STATION RECOVERY (2025)
 DR9409
 DR9409'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9409'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5687 ***********************************************************************
 JV5687  DESIGNATION -  HANNA 1916
 JV5687  PID         -  JV5687
 JV5687  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5687  COUNTRY     -  US
 JV5687  USGS QUAD   -  CURTIS BAY (2016)
 JV5687
 JV5687                         *CURRENT SURVEY CONTROL
 JV5687  ______________________________________________________________________
 JV5687* NAD 83(1991) POSITION- 39 13 56.59947(N) 076 36 28.14464(W)   ADJUSTED
 JV5687* NAVD 88 ORTHO HEIGHT -    34.    (meters)      112.    (feet) SCALED
 JV5687  ______________________________________________________________________
 JV5687  GEOID HEIGHT    -        -32.818 (meters)                     GEOID18
 JV5687  LAPLACE CORR    -         -5.02  (seconds)                    DEFLEC18
 JV5687  HORZ ORDER      -  THIRD
 JV5687
 JV5687.The horizontal coordinates were established by classical geodetic methods
 JV5687.and adjusted by the National Geodetic Survey in January 1992.
 JV5687
 JV5687.The orthometric height was scaled from a topographic map.
 JV5687
 JV5687.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5687.GEOID18 height accuracy estimate available here.
 JV5687
 JV5687.Click photographs - Photos may exist for this station.
 JV5687
 JV5687.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5687
 JV5687. The following values were computed from the NAD 83(1991) position.
 JV5687
 JV5687;                    North         East     Units Scale Factor Converg.
 JV5687;SPC MD       -   173,877.156   433,860.761   MT  0.99996917   +0 14 46.1
 JV5687;SPC MD       -   570,461.97  1,423,424.85   sFT  0.99996917   +0 14 46.1
 JV5687;UTM  18      - 4,343,797.167   361,229.107   MT  0.99983711   -1 01 01.4
 JV5687
 JV5687!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5687!SPC MD       -   0.99999985  x   0.99996917  =   0.99996902
 JV5687!UTM  18      -   0.99999985  x   0.99983711  =   0.99983696
 JV5687
 JV5687:                Primary Azimuth Mark                     Grid Az
 JV5687:SPC MD       -  F S ROYSTER 1915                         075 21 17.3
 JV5687:UTM  18      -  F S ROYSTER 1915                         076 37 04.8
 JV5687
 JV5687_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6122943797(NAD 83)
 JV5687
 JV5687|---------------------------------------------------------------------|
 JV5687| PID    Reference Object                     Distance      Geod. Az  |
 JV5687|                                                           dddmmss.s |
 JV5687| JV5726 F S ROYSTER 1915                    APPROX. 3.5 KM 0753603.4 |
 JV5687|---------------------------------------------------------------------|
 JV5687
 JV5687                          SUPERSEDED SURVEY CONTROL
 JV5687
 JV5687  NAD 83(1986)-  39 13 56.59597(N)    076 36 28.15382(W) AD(       ) 3
 JV5687  NAD 27      -  39 13 56.20700(N)    076 36 29.27500(W) AD(       ) 3
 JV5687  USSD        -  39 13 56.57600(N)    076 36 29.11000(W) AD(       ) 3
 JV5687
 JV5687.Superseded values are not recommended for survey control.
 JV5687
 JV5687.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5687.See file dsdata.pdf to determine how the superseded data were derived.
 JV5687
 JV5687_MARKER: U = CONCRETE POST
 JV5687_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV5687_SP_SET: OBJECT IMBEDDED IN GROUND
 JV5687_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5687
 JV5687  HISTORY     - Date     Condition        Report By
 JV5687  HISTORY     - 1916     MONUMENTED       CGS
 JV5687  HISTORY     - 1985     MARK NOT FOUND   USPSQD
 JV5687
 JV5687                          STATION DESCRIPTION
 JV5687
 JV5687'DESCRIBED BY COAST AND GEODETIC SURVEY 1916 (EWE)
 JV5687'IN BROOKLYN, ON A HILL, IN THE MIDDLE OF FOURTH STREET EXTENDED,
 JV5687'IN A PLOWED FIELD.  STATION MARKED BY A CONCRETE MONUMENT WITH
 JV5687'TOP 20 INCHES BELOW SURFACE OF GROUND.  A GROUP OF FIVE TREES
 JV5687'IS NEAR-BY WHERE A CONCRETE REFERENCE MONUMENT WITH ARROW
 JV5687'POINTING TO STATION IS LOCATED.
 JV5687
 JV5687                          STATION RECOVERY (1985)
 JV5687
 JV5687'RECOVERY NOTE BY US POWER SQUADRON 1985 (WRB)
 JV5687'SEARCHED AREA, COULD NOT FIND STATION OR REFERENCE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4641 ***********************************************************************
 AB4641  DESIGNATION -  HANOVER
 AB4641  PID         -  AB4641
 AB4641  STATE/COUNTY-  MD/CARROLL
 AB4641  COUNTRY     -  US
 AB4641  USGS QUAD   -  LITTLESTOWN (2019)
 AB4641
 AB4641                         *CURRENT SURVEY CONTROL
 AB4641  ______________________________________________________________________
 AB4641* NAD 83(2011) POSITION- 39 41 05.04687(N) 077 00 44.72576(W)   ADJUSTED
 AB4641* NAD 83(2011) ELLIP HT-   208.799 (meters)        (06/27/12)   ADJUSTED
 AB4641* NAD 83(2011) EPOCH   -  2010.00
 AB4641* NAVD 88 ORTHO HEIGHT -   241.4   (meters)      792.    (feet) GPS OBS
 AB4641  ______________________________________________________________________
 AB4641  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4641  GEOID HEIGHT    -        -32.657 (meters)                     GEOID99
 AB4641  GEOID HEIGHT    -        -32.652 (meters)                     GEOID18
 AB4641  NAD 83(2011) X  -  1,104,662.214 (meters)                     COMP
 AB4641  NAD 83(2011) Y  - -4,789,555.721 (meters)                     COMP
 AB4641  NAD 83(2011) Z  -  4,051,242.247 (meters)                     COMP
 AB4641  LAPLACE CORR    -          4.83  (seconds)                    DEFLEC18
 AB4641
 AB4641  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4641  Standards:
 AB4641         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4641            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4641  -------------------------------------------------------------------
 AB4641  NETWORK    0.83   3.04           0.37   0.29   1.55      0.27809826
 AB4641  -------------------------------------------------------------------
 AB4641  Click here for local accuracies and other accuracy information.
 AB4641
 AB4641.The horizontal coordinates were established by GPS observations
 AB4641.and adjusted by the National Geodetic Survey in June 2012.
 AB4641
 AB4641.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4641.been affixed to the stable North American tectonic plate. See 
 AB4641.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4641
 AB4641.The horizontal coordinates are valid at the epoch date displayed above
 AB4641.which is a decimal equivalence of Year/Month/Day.
 AB4641
 AB4641.The orthometric height was determined by GPS observations and a
 AB4641.high-resolution geoid model.
 AB4641
 AB4641.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4641.GEOID18 height accuracy estimate available here.
 AB4641
 AB4641.Click photographs - Photos may exist for this station.
 AB4641
 AB4641.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4641
 AB4641.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4641
 AB4641.The ellipsoidal height was determined by GPS observations
 AB4641.and is referenced to NAD 83.
 AB4641
 AB4641. The following values were computed from the NAD 83(2011) position.
 AB4641
 AB4641;                    North         East     Units Scale Factor Converg.
 AB4641;SPC MD       -   224,026.131   398,934.166   MT  1.00004950   -0 00 28.1
 AB4641;SPC MD       -   734,992.40  1,308,836.51   sFT  1.00004950   -0 00 28.1
 AB4641;UTM  18      - 4,394,702.594   327,426.104   MT  0.99996667   -1 17 07.4
 AB4641
 AB4641!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4641!SPC MD       -   0.99996724  x   1.00004950  =   1.00001674
 AB4641!UTM  18      -   0.99996724  x   0.99996667  =   0.99993391
 AB4641
 AB4641_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2742694702(NAD 83)
 AB4641
 AB4641|---------------------------------------------------------------------|
 AB4641| PID    Reference Object                     Distance      Geod. Az  |
 AB4641|                                                           dddmmss.s |
 AB4641| AB4769 HANOVER AZ MK                       317.876 METERS 01656     |
 AB4641|---------------------------------------------------------------------|
 AB4641
 AB4641                          SUPERSEDED SURVEY CONTROL
 AB4641
 AB4641  NAD 83(2007)-  39 41 05.04716(N)    077 00 44.72638(W) AD(2002.00) 0
 AB4641  ELLIP H (02/10/07)  208.818  (m)                       GP(2002.00)    
 AB4641  ELLIP H (08/30/02)  208.787  (m)                       GP(       ) 4 2
 AB4641  NAD 83(1991)-  39 41 05.04650(N)    077 00 44.72708(W) AD(       ) 1
 AB4641  ELLIP H (07/03/96)  208.742  (m)                       GP(       ) 1 1
 AB4641  NAVD 88 (07/03/96)  241.4    (m)  GEOID93  model used  GPS OBS        
 AB4641
 AB4641.Superseded values are not recommended for survey control.
 AB4641
 AB4641.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4641.See file dsdata.pdf to determine how the superseded data were derived.
 AB4641
 AB4641_MARKER: DD = SURVEY DISK
 AB4641_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4641_STAMPING: HANOVER 1995
 AB4641_MARK LOGO: MD-013
 AB4641_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4641_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4641+STABILITY: SURFACE MOTION
 AB4641_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4641+SATELLITE: SATELLITE OBSERVATIONS - September 17, 2015
 AB4641
 AB4641  HISTORY     - Date     Condition        Report By
 AB4641  HISTORY     - 1995     MONUMENTED       MD-013
 AB4641  HISTORY     - 20150917 GOOD             USPSQD
 AB4641
 AB4641                          STATION DESCRIPTION
 AB4641
 AB4641'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4641'STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) NORTH OF THE CENTER OF
 AB4641'WESTMINSTER, ABOUT 2.5 MI (4.0 KM) SOUTH OF THE PENNSYLVANIA STATE
 AB4641'LINE AND ABOUT 1 MI (1.6 KM) NORTH OF UNION MILLS. TO REACH STATION
 AB4641'FROM THE MD ROUTE 140 (TANEYTOWN PIKE) OVERPASS BRIDGE OVER MD ROUTE
 AB4641'97 (LITTLESTOWN PIKE) GO NORTH ON MD ROUTE 97 FOR 5.9 MI (9.5 KM) TO
 AB4641'THE INTERSECTION WITH OLD HANOVER ROAD AND THE UNION MILLS HOMESTEAD
 AB4641'PARK. TURN RIGHT ON OLD HANOVER ROAD AND GO NORTH FOR 1.15 MI (1.85
 AB4641'KM) TO THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A
 AB4641'10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 385
 AB4641'FT (117.3 M) SOUTH OF THE INTERSECTION OF OLD HANOVER ROAD AND
 AB4641'CHERRYTOWN ROAD, 16.0 FT (4.9 M) EAST OF THE CENTERLINE OF OLD HANOVER
 AB4641'ROAD, 115.6 FT (35.2 M) SOUTHEAST OF POWER POLE NO.353455 AND 3.5 FT
 AB4641'(1.1 M) NORTH OF A ROAD SIGN.
 AB4641
 AB4641                          STATION RECOVERY (2015)
 AB4641
 AB4641'RECOVERY NOTE BY US POWER SQUADRON 2015
 AB4641'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4769 ***********************************************************************
 AB4769  DESIGNATION -  HANOVER AZ MK
 AB4769  PID         -  AB4769
 AB4769  STATE/COUNTY-  MD/CARROLL
 AB4769  COUNTRY     -  US
 AB4769  USGS QUAD   -  LITTLESTOWN (2019)
 AB4769
 AB4769                         *CURRENT SURVEY CONTROL
 AB4769  ______________________________________________________________________
 AB4769* NAD 83(2011) POSITION- 39 41 14.90717(N) 077 00 40.84176(W)   ADJUSTED
 AB4769* NAD 83(2011) ELLIP HT-   214.293 (meters)        (06/27/12)   ADJUSTED
 AB4769* NAD 83(2011) EPOCH   -  2010.00
 AB4769* NAVD 88 ORTHO HEIGHT -   246.9   (meters)      810.    (feet) GPS OBS
 AB4769  ______________________________________________________________________
 AB4769  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4769  GEOID HEIGHT    -        -32.665 (meters)                     GEOID99
 AB4769  GEOID HEIGHT    -        -32.660 (meters)                     GEOID18
 AB4769  NAD 83(2011) X  -  1,104,709.704 (meters)                     COMP
 AB4769  NAD 83(2011) Y  - -4,789,349.806 (meters)                     COMP
 AB4769  NAD 83(2011) Z  -  4,051,479.788 (meters)                     COMP
 AB4769  LAPLACE CORR    -          4.88  (seconds)                    DEFLEC18
 AB4769
 AB4769  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4769  Standards:
 AB4769         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4769            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4769  -------------------------------------------------------------------
 AB4769  NETWORK    0.98   3.12           0.43   0.36   1.59      0.15247102
 AB4769  -------------------------------------------------------------------
 AB4769  Click here for local accuracies and other accuracy information.
 AB4769
 AB4769.The horizontal coordinates were established by GPS observations
 AB4769.and adjusted by the National Geodetic Survey in June 2012.
 AB4769
 AB4769.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4769.been affixed to the stable North American tectonic plate. See 
 AB4769.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4769
 AB4769.The horizontal coordinates are valid at the epoch date displayed above
 AB4769.which is a decimal equivalence of Year/Month/Day.
 AB4769
 AB4769.The orthometric height was determined by GPS observations and a
 AB4769.high-resolution geoid model.
 AB4769
 AB4769.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4769.GEOID18 height accuracy estimate available here.
 AB4769
 AB4769.Click photographs - Photos may exist for this station.
 AB4769
 AB4769.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4769
 AB4769.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4769
 AB4769.The ellipsoidal height was determined by GPS observations
 AB4769.and is referenced to NAD 83.
 AB4769
 AB4769. The following values were computed from the NAD 83(2011) position.
 AB4769
 AB4769;                    North         East     Units Scale Factor Converg.
 AB4769;SPC MD       -   224,330.238   399,026.761   MT  1.00005018   -0 00 25.6
 AB4769;SPC MD       -   735,990.12  1,309,140.30   sFT  1.00005018   -0 00 25.6
 AB4769;UTM  18      - 4,395,004.536   327,525.448   MT  0.99996625   -1 17 05.1
 AB4769
 AB4769!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4769!SPC MD       -   0.99996638  x   1.00005018  =   1.00001656
 AB4769!UTM  18      -   0.99996638  x   0.99996625  =   0.99993263
 AB4769
 AB4769_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2752595004(NAD 83)
 AB4769
 AB4769|---------------------------------------------------------------------|
 AB4769| PID    Reference Object                     Distance      Geod. Az  |
 AB4769|                                                           dddmmss.s |
 AB4769| AB4641 HANOVER                             317.876 METERS 19656     |
 AB4769|---------------------------------------------------------------------|
 AB4769
 AB4769                          SUPERSEDED SURVEY CONTROL
 AB4769
 AB4769  NAD 83(2007)-  39 41 14.90746(N)    077 00 40.84237(W) AD(2002.00) 0
 AB4769  ELLIP H (02/10/07)  214.311  (m)                       GP(2002.00)    
 AB4769  ELLIP H (08/30/02)  214.280  (m)                       GP(       ) 4 2
 AB4769  NAD 83(1991)-  39 41 14.90680(N)    077 00 40.84307(W) AD(       ) 1
 AB4769  ELLIP H (07/03/96)  214.236  (m)                       GP(       ) 1 1
 AB4769  NAVD 88 (07/03/96)  246.9    (m)  GEOID93  model used  GPS OBS        
 AB4769
 AB4769.Superseded values are not recommended for survey control.
 AB4769
 AB4769.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4769.See file dsdata.pdf to determine how the superseded data were derived.
 AB4769
 AB4769_MARKER: DD = SURVEY DISK
 AB4769_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4769_STAMPING: HANOVER AZI 1995
 AB4769_MARK LOGO: MD-013
 AB4769_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4769_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4769+STABILITY: SURFACE MOTION
 AB4769_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4769+SATELLITE: SATELLITE OBSERVATIONS - September 17, 2015
 AB4769
 AB4769  HISTORY     - Date     Condition        Report By
 AB4769  HISTORY     - 1995     MONUMENTED       MD-013
 AB4769  HISTORY     - 20150917 GOOD             USPSQD
 AB4769
 AB4769                          STATION DESCRIPTION
 AB4769
 AB4769'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4769'STATION IS LOCATED ABOUT 7.5 MI (12.1 KM) NORTH OF THE CENTER OF
 AB4769'WESTMINSTER AND ABOUT 2.5 MI (4.0 KM) SOUTH OF THE PENNSYLVANIA STATE
 AB4769'LINE. TO REACH STATION FROM THE MD ROUTE 140 (TANEYTOWN PIKE) OVERPASS
 AB4769'BRIDGE OVER MD ROUTE 97 (LITTLESTOWN PIKE ) IN WESTMINSTER, GO NORTH
 AB4769'ON MD ROUTE 97 FOR 5.9 MI (9.5 KM) TO THE INTERSECTION WITH OLD
 AB4769'HANOVER ROAD. TURN RIGHT AND GO NORTH ON OLD HANOVER ROAD FOR 1.75 MI
 AB4769'(2.82 KM) TO THE INTERSECTION WITH KIRKHOFF ROAD AND THE STATION ON
 AB4769'THE LEFT. STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB4769'MONUMENT SET FLUSH WITH THE GROUND. IT IS 33.5 FT (10.2 M) WEST OF THE
 AB4769'CENTERLINE OF OLD HANOVER ROAD, 58.5 SOUTH OF THE CENTERLINE OF
 AB4769'KIRKHOFF ROAD, 49.1 FT (15.0 M) SOUTHWEST OF POWER POLE NO.159911,
 AB4769'136.5 FT (41.6 M) NORTH OF THE CENTERLINE OF A DRIVEWAY LEADING WEST
 AB4769'TO HOUSE NO.4050 AND 153.5 FT (46.8 M) NORTH OF POWER POLE NO.483212
 AB4769'(TELEPHONE POLE NO.31).
 AB4769
 AB4769                          STATION RECOVERY (2015)
 AB4769
 AB4769'RECOVERY NOTE BY US POWER SQUADRON 2015
 AB4769'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5591 ***********************************************************************
 JV5591  DESIGNATION -  HANOVER ST BRIDGE NE TOWER CUP
 JV5591  PID         -  JV5591
 JV5591  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5591  COUNTRY     -  US
 JV5591  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5591
 JV5591                         *CURRENT SURVEY CONTROL
 JV5591  ______________________________________________________________________
 JV5591* NAD 83(1991) POSITION- 39 15 28.83482(N) 076 36 57.75922(W)   ADJUSTED
 JV5591  ______________________________________________________________________
 JV5591  GEOID HEIGHT    -        -32.768 (meters)                     GEOID18
 JV5591  LAPLACE CORR    -         -5.40  (seconds)                    DEFLEC18
 JV5591  HORZ ORDER      -  THIRD
 JV5591
 JV5591.The horizontal coordinates were established by classical geodetic methods
 JV5591.and adjusted by the National Geodetic Survey in January 1992.
 JV5591
 JV5591.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5591.GEOID18 height accuracy estimate available here.
 JV5591
 JV5591.Click photographs - Photos may exist for this station.
 JV5591
 JV5591.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5591
 JV5591. The following values were computed from the NAD 83(1991) position.
 JV5591
 JV5591;                    North         East     Units Scale Factor Converg.
 JV5591;SPC MD       -   176,718.468   433,138.550   MT  0.99997205   +0 14 27.5
 JV5591;SPC MD       -   579,783.84  1,421,055.39   sFT  0.99997205   +0 14 27.5
 JV5591;UTM  18      - 4,346,653.335   360,569.812   MT  0.99983937   -1 01 22.1
 JV5591
 JV5591_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6056946653(NAD 83)
 JV5591
 JV5591                          SUPERSEDED SURVEY CONTROL
 JV5591
 JV5591  NAD 83(1986)-  39 15 28.83134(N)    076 36 57.76774(W) AD(       ) 3
 JV5591  NAD 27      -  39 15 28.44700(N)    076 36 58.87900(W) AD(       ) 3
 JV5591
 JV5591.Superseded values are not recommended for survey control.
 JV5591
 JV5591.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5591.See file dsdata.pdf to determine how the superseded data were derived.
 JV5591
 JV5591_MARKER: 55 = TOWER
 JV5591_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5591+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2009
 JV5591
 JV5591  HISTORY     - Date     Condition        Report By
 JV5591  HISTORY     - 1934     FIRST OBSERVED   CGS
 JV5591  HISTORY     - 1975     GOOD             NGS
 JV5591  HISTORY     - 20091213 GOOD             GEOCAC
 JV5591
 JV5591                          STATION DESCRIPTION
 JV5591
 JV5591'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5591'THE NE TOWER OF THE FOUR TOWERS AT THE DRAWSPAN OF THE HANOVER
 JV5591'STREET BRIDGE ACROSS THE MIDDLE BRANCH.
 JV5591
 JV5591                          STATION RECOVERY (1975)
 JV5591
 JV5591'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5591'STATION RECOVERED IN GOOD CONDITION.
 JV5591
 JV5591                          STATION RECOVERY (2009)
 JV5591
 JV5591'RECOVERY NOTE BY GEOCACHING 2009 (KHW)
 JV5591'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7315 ***********************************************************************
 HV7315  DESIGNATION -  HARD 1898
 HV7315  PID         -  HV7315
 HV7315  STATE/COUNTY-  MD/CALVERT
 HV7315  COUNTRY     -  US
 HV7315  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV7315
 HV7315                         *CURRENT SURVEY CONTROL
 HV7315  ______________________________________________________________________
 HV7315* NAD 83(1993) POSITION- 38 35 53.81916(N) 076 30 53.46584(W)   ADJUSTED
 HV7315* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7315  ______________________________________________________________________
 HV7315  GEOID HEIGHT    -        -33.934 (meters)                     GEOID18
 HV7315  LAPLACE CORR    -         -5.47  (seconds)                    DEFLEC18
 HV7315  HORZ ORDER      -  THIRD
 HV7315
 HV7315.The horizontal coordinates were established by classical geodetic methods
 HV7315.and adjusted by the National Geodetic Survey in November 1994.
 HV7315
 HV7315.The orthometric height was scaled from a topographic map.
 HV7315
 HV7315.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7315.GEOID18 height accuracy estimate available here.
 HV7315
 HV7315.Click photographs - Photos may exist for this station.
 HV7315
 HV7315.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7315
 HV7315. The following values were computed from the NAD 83(1993) position.
 HV7315
 HV7315;                    North         East     Units Scale Factor Converg.
 HV7315;SPC MD       -   103,525.356   442,261.439   MT  0.99996151   +0 18 16.2
 HV7315;SPC MD       -   339,649.44  1,450,986.07   sFT  0.99996151   +0 18 16.2
 HV7315;UTM  18      - 4,273,287.229   368,084.406   MT  0.99981430   -0 56 42.7
 HV7315
 HV7315!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7315!SPC MD       -   1.00000521  x   0.99996151  =   0.99996672
 HV7315!UTM  18      -   1.00000521  x   0.99981430  =   0.99981950
 HV7315
 HV7315:                Primary Azimuth Mark                     Grid Az
 HV7315:SPC MD       -  SHARPS ISLAND LIGHTHOUSE                 069 09 52.7
 HV7315:UTM  18      -  SHARPS ISLAND LIGHTHOUSE                 070 24 51.6
 HV7315
 HV7315_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6808473287(NAD 83)
 HV7315
 HV7315|---------------------------------------------------------------------|
 HV7315| PID    Reference Object                     Distance      Geod. Az  |
 HV7315|                                                           dddmmss.s |
 HV7315| HV6142 SHARPS ISLAND LIGHTHOUSE            APPROX.12.9 KM 0692808.9 |
 HV7315| HV7307 BASFORD 1907                        APPROX. 0.5 KM 3540437.3 |
 HV7315|---------------------------------------------------------------------|
 HV7315
 HV7315                          SUPERSEDED SURVEY CONTROL
 HV7315
 HV7315  NAD 83(1991)-  38 35 53.81850(N)    076 30 53.46611(W) AD(       ) 3
 HV7315  NAD 83(1986)-  38 35 53.81688(N)    076 30 53.47977(W) AD(       ) 3
 HV7315  NAD 27      -  38 35 53.38500(N)    076 30 54.64300(W) AD(       ) 3
 HV7315  USSD        -  38 35 53.75600(N)    076 30 54.44000(W) AD(       ) 3
 HV7315
 HV7315.Superseded values are not recommended for survey control.
 HV7315
 HV7315.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7315.See file dsdata.pdf to determine how the superseded data were derived.
 HV7315
 HV7315
 HV7315  HISTORY     - Date     Condition        Report By
 HV7315  HISTORY     - 1898     MONUMENTED       CGS
 HV7315  HISTORY     - 1907     GOOD             CGS
 HV7315  HISTORY     - 1953     GOOD             USGS
 HV7315
 HV7315                          STATION DESCRIPTION
 HV7315
 HV7315'DESCRIBED BY COAST AND GEODETIC SURVEY 1907
 HV7315'ON THE WESTERN SHORE OF CHESAPEAKE BAY, ON THE HIGHEST POINT OF A
 HV7315'CLIFF WHICH RISES ABRUPTLY FROM BOTH N AND S, ABOUT 1 MILE S OF
 HV7315'PLUM POINT LANDING, ON LAND BELONGING (IN 1907) TO MRS. H.M.
 HV7315'WILSON.  THE NEXT HIGH HILL TO THE S IS COVERED WITH AN EXTENSIVE
 HV7315'PEACH ORCHARD.  THE LAND AT THE STATION IS CULTIVATED ON ALTERNATE
 HV7315'YEARS.  THE STATION IS 3.7 METERS (12 FEET) W FROM A WIRE FENCE
 HV7315'AND 4.5 METERS (15 FEET) FROM THE EDGE OF THE CLIFF.
 HV7315'
 HV7315'THE UNDERGROUND MARK CONSITS OF TWO HEXAGONAL DRAIN TILES OF BLACK
 HV7315'EARTHENWARE, ABOUT 14 INCHES LONG, PLACED ONE DIRECTLY ABOVE THE
 HV7315'OTHER, AND EMBEDDED IN AN ENVELOPE OF CEMENT ABOUT 2-1/2 INCHES
 HV7315'THICK.  THE TOP OF THE UPPER TILE IS 3 FEET BELOW THE SURFACE OF
 HV7315'THE GROUND.
 HV7315'
 HV7315'SURFACE MARK IS A 6-INCH TERRA-COTTA DRAIN TILE, SET BELL END UP
 HV7315'FLUSH WITH THE GROUND, AND FILLED WITH AND SURROUNDED WITH CONCRETE.
 HV7315'
 HV7315'A REFERENCE MARK SIMILAR TO THE ABOVE CENTER MARK, EXCEPT THAT THE
 HV7315'UNDERGROUND MARK CONSISTED OF ONLY ONE DRAIN TILE, WAS PLACED ON
 HV7315'RANGE WITH (AWAY FROM) SHARPS ISLAND LIGHT, AND 11.04 METERS (36.2
 HV7315'FEET) FROM THE STATION.
 HV7315
 HV7315                          STATION RECOVERY (1953)
 HV7315
 HV7315'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV7315'STATION PROBABLY DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3877 ***********************************************************************
 JU3877  DESIGNATION -  HARD 1898
 JU3877  PID         -  JU3877
 JU3877  STATE/COUNTY-  MD/CECIL
 JU3877  COUNTRY     -  US
 JU3877  USGS QUAD   -  ELKTON (2016)
 JU3877
 JU3877                         *CURRENT SURVEY CONTROL
 JU3877  ______________________________________________________________________
 JU3877* NAD 83(1991) POSITION- 39 31 56.06447(N) 075 50 53.16945(W)   ADJUSTED
 JU3877* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3877  ______________________________________________________________________
 JU3877  GEOID HEIGHT    -        -33.300 (meters)                     GEOID18
 JU3877  LAPLACE CORR    -         -0.73  (seconds)                    DEFLEC18
 JU3877  HORZ ORDER      -  THIRD
 JU3877
 JU3877.The horizontal coordinates were established by classical geodetic methods
 JU3877.and adjusted by the National Geodetic Survey in January 1992.
 JU3877
 JU3877.The orthometric height was scaled from a topographic map.
 JU3877
 JU3877.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3877.GEOID18 height accuracy estimate available here.
 JU3877
 JU3877.Click photographs - Photos may exist for this station.
 JU3877
 JU3877.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3877
 JU3877. The following values were computed from the NAD 83(1991) position.
 JU3877
 JU3877;                    North         East     Units Scale Factor Converg.
 JU3877;SPC MD       -   207,719.236   499,031.741   MT  1.00001542   +0 43 22.7
 JU3877;SPC MD       -   681,492.19  1,637,239.97   sFT  1.00001542   +0 43 22.7
 JU3877;UTM  18      - 4,376,185.918   427,114.162   MT  0.99966540   -0 32 23.5
 JU3877
 JU3877!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3877!SPC MD       -   1.00000526  x   1.00001542  =   1.00002068
 JU3877!UTM  18      -   1.00000526  x   0.99966540  =   0.99967066
 JU3877
 JU3877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2711476185(NAD 83)
 JU3877
 JU3877|---------------------------------------------------------------------|
 JU3877| PID    Reference Object                     Distance      Geod. Az  |
 JU3877|                                                           dddmmss.s |
 JU3877| JU3878 FENCE 1898                          234.151 METERS 15443     |
 JU3877|---------------------------------------------------------------------|
 JU3877
 JU3877                          SUPERSEDED SURVEY CONTROL
 JU3877
 JU3877  NAD 83(1986)-  39 31 56.05581(N)    075 50 53.17458(W) AD(       ) 3
 JU3877  NAD 27      -  39 31 55.65900(N)    075 50 54.40100(W) AD(       ) 3
 JU3877  USSD        -  39 31 56.04000(N)    075 50 54.22800(W) AD(       ) 3
 JU3877
 JU3877.Superseded values are not recommended for survey control.
 JU3877
 JU3877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3877.See file dsdata.pdf to determine how the superseded data were derived.
 JU3877
 JU3877_MARKER: N = NAIL
 JU3877_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3877_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3877+STABILITY: SURFACE MOTION
 JU3877
 JU3877  HISTORY     - Date     Condition        Report By
 JU3877  HISTORY     - 1898     MONUMENTED       CGS
 JU3877  HISTORY     - 1905     GOOD             CGS
 JU3877
 JU3877                          STATION DESCRIPTION
 JU3877
 JU3877'DESCRIBED BY COAST AND GEODETIC SURVEY 1905
 JU3877'ON N SIDE OF BACK CREEK, 3/4 MILE E OF RANDALL WHARF, ON A FIRM
 JU3877'BANK ABOUT 6 FEET HIGH.  MARKED BY CEMENT BLOCK 3 INCHES SQUARE
 JU3877'AND 3 FEET DEEP WITH NAIL IN TOP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7050 ***********************************************************************
 HV7050  DESIGNATION -  HARD 1908
 HV7050  PID         -  HV7050
 HV7050  STATE/COUNTY-  MD/CHARLES
 HV7050  COUNTRY     -  US
 HV7050  USGS QUAD   -  ROCK POINT (2016)
 HV7050
 HV7050                         *CURRENT SURVEY CONTROL
 HV7050  ______________________________________________________________________
 HV7050* NAD 83(1993) POSITION- 38 16 25.20803(N) 076 50 01.55191(W)   ADJUSTED
 HV7050* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7050  ______________________________________________________________________
 HV7050  GEOID HEIGHT    -        -33.690 (meters)                     GEOID18
 HV7050  LAPLACE CORR    -         -0.83  (seconds)                    DEFLEC18
 HV7050  HORZ ORDER      -  THIRD
 HV7050
 HV7050.The horizontal coordinates were established by classical geodetic methods
 HV7050.and adjusted by the National Geodetic Survey in November 1994.
 HV7050
 HV7050.The orthometric height was scaled from a topographic map.
 HV7050
 HV7050.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7050.GEOID18 height accuracy estimate available here.
 HV7050
 HV7050.Click photographs - Photos may exist for this station.
 HV7050
 HV7050.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7050
 HV7050. The following values were computed from the NAD 83(1993) position.
 HV7050
 HV7050;                    North         East     Units Scale Factor Converg.
 HV7050;SPC MD       -    67,393.290   414,546.514   MT  1.00000469   +0 06 15.6
 HV7050;SPC MD       -   221,106.15  1,360,058.02   sFT  1.00000469   +0 06 15.6
 HV7050;SPC VA N     - 2,068,698.972 3,645,791.114   MT  0.99996628   +1 02 23.7
 HV7050;SPC VA N     - 6,787,056.54 11,961,233.01   sFT  0.99996628   +1 02 23.7
 HV7050;UTM  18      - 4,237,770.161   339,594.093   MT  0.99991689   -1 08 10.0
 HV7050
 HV7050!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7050!SPC MD       -   1.00000533  x   1.00000469  =   1.00001002
 HV7050!SPC VA N     -   1.00000533  x   0.99996628  =   0.99997161
 HV7050!UTM  18      -   1.00000533  x   0.99991689  =   0.99992222
 HV7050
 HV7050:                Primary Azimuth Mark                     Grid Az
 HV7050:SPC MD       -  CORNER RESET                             195 53 37.4
 HV7050:SPC VA N     -  CORNER RESET                             194 57 29.3
 HV7050:UTM  18      -  CORNER RESET                             197 08 03.0
 HV7050
 HV7050_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3959437770(NAD 83)
 HV7050
 HV7050|---------------------------------------------------------------------|
 HV7050| PID    Reference Object                     Distance      Geod. Az  |
 HV7050|                                                           dddmmss.s |
 HV7050| HV7065 BUSHWOOD SACRED HEART CH SPIRE      APPROX. 4.8 KM 0484614.5 |
 HV7050| HV7049 CORNER RESET                        APPROX. 1.6 KM 1955953.0 |
 HV7050|---------------------------------------------------------------------|
 HV7050
 HV7050                          SUPERSEDED SURVEY CONTROL
 HV7050
 HV7050  NAD 83(1991)-  38 16 25.20716(N)    076 50 01.55717(W) AD(       ) 3
 HV7050  NAD 83(1986)-  38 16 25.20799(N)    076 50 01.56764(W) AD(       ) 3
 HV7050  NAD 27      -  38 16 24.71200(N)    076 50 02.65300(W) AD(       ) 3
 HV7050  USSD        -  38 16 25.36200(N)    076 50 02.73000(W) AD(       ) 3
 HV7050
 HV7050.Superseded values are not recommended for survey control.
 HV7050
 HV7050.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7050.See file dsdata.pdf to determine how the superseded data were derived.
 HV7050
 HV7050_MARKER: H = DRILL HOLE
 HV7050_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7050_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7050+STABILITY: SURFACE MOTION
 HV7050
 HV7050  HISTORY     - Date     Condition        Report By
 HV7050  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7050  HISTORY     - 1942     GOOD             CGS
 HV7050
 HV7050                          STATION DESCRIPTION
 HV7050
 HV7050'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7050'ON THE WESTERN SHORE OF WICOMICO RIVER, ON POINT OF LAND KNOWN AS
 HV7050'ROCK POINT, ABOUT 2 MILES N OF COBB POINT BAR LIGHT, ON A LOW
 HV7050'POINT OF LAND, NEAR SEVERAL SMALL CEDAR TREES, AND ABOUT 1 FOOT
 HV7050'ABOVE HIGH WATER.  IT IS 47 YARDS W OF SHORE, 16 YARDS S OF
 HV7050'SHORE, 30 YARDS N OF SHORE, ABOUT 80 YARDS NE OF ROCK POINT WHARF.
 HV7050'STATION MARK IS CENTER OF STANDARD MONUMENT OF MARYLAND SHELL FISH
 HV7050'SURVEY, WHICH IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES
 HV7050'SQUARE AT THE TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME
 HV7050'MOLD AND SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH
 HV7050'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HV7050'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE CENTER
 HV7050'HOLE IS ALWAYS AT THE CENTER OF THE MONUMENT AND IF THE MARKING
 HV7050'HAS BEEN BROKEN OFF WITHOUT DISTURBING THE BOTTOM, THE CENTER OF
 HV7050'THE SQUARE SECTION MAY BE USED AS THE LOCATION OF THE STATION.
 HV7050'THE MONUMENT IS SET VERTICALLY IN THE GROUND, WITH TOP PROJECTING
 HV7050'ABOUT 3 TO 5 INCHES ABOVE THE SURFACE.  DISTANCES AND BEARINGS TO
 HV7050'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NE GABLE OF WHARF
 HV7050'HOUSE, 80 YARDS, S 30 DEG 49 MIN W.  S CHIMNEY OF LANCASTERS
 HV7050'STORE, 170 YARDS, S 78 DEG 35 MIN W.  POINT OF E GABLE ON HOUSE,
 HV7050'1/4 MILE, N 55 DEG 34 MIN W.  GABLE OF HOUSE ON WHARF AT BUSHWOOD,
 HV7050'1-3/4 MILES, N 65 DEG 42 MIN E.  W GABLE OF HOUSE, 2 MILES, S 77
 HV7050'DEG 12 MIN E.  W GABLE ON ONE-STORY HOUSE, 2-1/4 MILES, S 54 DEG
 HV7050'59 MIN E.  N CHIMNEY OF 2-STORY HOUSE, 2-1/2 MILES, S 40 DEG 6 MIN E.
 HV7050
 HV7050                          STATION RECOVERY (1942)
 HV7050
 HV7050'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7050'STATION RECOVERED AS DESCRIBED WITH THE EXCEPTIONS NOTED BELOW--
 HV7050'
 HV7050'(1) THE CEDAR TREES ARE GONE.
 HV7050'
 HV7050'(2) ALL SHORE LINE MEASUREMENTS HAVE CHANGED.
 HV7050'
 HV7050'(3) 100 YARDS FROM WHARF, INSTEAD OF 80 YARDS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0385 ***********************************************************************
 JV0385  DESIGNATION -  HARFORD
 JV0385  PID         -  JV0385
 JV0385  STATE/COUNTY-  MD/HARFORD
 JV0385  COUNTRY     -  US
 JV0385  USGS QUAD   -  PERRYMAN (2016)
 JV0385
 JV0385                         *CURRENT SURVEY CONTROL
 JV0385  ______________________________________________________________________
 JV0385* NAD 83(1991) POSITION- 39 29 22.42119(N) 076 14 41.01786(W)   ADJUSTED
 JV0385* NAVD 88 ORTHO HEIGHT -    61.905 (meters)      203.10  (feet) ADJUSTED
 JV0385  ______________________________________________________________________
 JV0385  GEOID HEIGHT    -        -33.058 (meters)                     GEOID18
 JV0385  LAPLACE CORR    -         -2.00  (seconds)                    DEFLEC18
 JV0385  DYNAMIC HEIGHT  -         61.874 (meters)      203.00  (feet) COMP
 JV0385  MODELED GRAVITY -    980,115.4   (mgal)                       NAVD 88
 JV0385
 JV0385  HORZ ORDER      -  THIRD
 JV0385  VERT ORDER      -  FIRST     CLASS II
 JV0385
 JV0385.The horizontal coordinates were established by classical geodetic methods
 JV0385.and adjusted by the National Geodetic Survey in January 1992.
 JV0385
 JV0385.The orthometric height was determined by differential leveling and
 JV0385.adjusted by the NATIONAL GEODETIC SURVEY
 JV0385.in October 2023.
 JV0385
 JV0385.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0385.GEOID18 height accuracy estimate available here.
 JV0385
 JV0385.Click photographs - Photos may exist for this station.
 JV0385
 JV0385.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0385
 JV0385.The dynamic height is computed by dividing the NAVD 88
 JV0385.geopotential number by the normal gravity value computed on the
 JV0385.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0385.degrees latitude (g = 980.6199 gals.).
 JV0385
 JV0385.The modeled gravity was interpolated from observed gravity values.
 JV0385
 JV0385. The following values were computed from the NAD 83(1991) position.
 JV0385
 JV0385;                    North         East     Units Scale Factor Converg.
 JV0385;SPC MD       -   202,624.739   464,973.038   MT  1.00000716   +0 28 26.5
 JV0385;SPC MD       -   664,778.00  1,525,499.04   sFT  1.00000716   +0 28 26.5
 JV0385;UTM  18      - 4,371,845.486   392,961.949   MT  0.99974106   -0 47 29.9
 JV0385
 JV0385!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0385!SPC MD       -   0.99999547  x   1.00000716  =   1.00000263
 JV0385!UTM  18      -   0.99999547  x   0.99974106  =   0.99973654
 JV0385
 JV0385:                Primary Azimuth Mark                     Grid Az
 JV0385:SPC MD       -  HARFORD AZ MK                            107 12 17.3
 JV0385:UTM  18      -  HARFORD AZ MK                            108 28 13.7
 JV0385
 JV0385_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9296171845(NAD 83)
 JV0385
 JV0385|---------------------------------------------------------------------|
 JV0385| PID    Reference Object                     Distance      Geod. Az  |
 JV0385|                                                           dddmmss.s |
 JV0385| JV4943 SWAN MEADOW WATER TANK              APPROX. 7.4 KM 0811531.6 |
 JV0385| JV4946 ABERDEEN PROVING GROUNDS TANK       APPROX. 9.8 KM 0933449.8 |
 JV0385| JV0386 HARFORD RM 1                         11.258 METERS 10312     |
 JV0385| JV0387 HARFORD AZ MK                       APPROX. 0.7 KM 1074043.8 |
 JV0385| JV4932 BELCAMP BATA SHOE WATER TANK        APPROX. 2.5 KM 1645338.8 |
 JV0385| JV4947 ABERDEEN PROVING GR E HIGH TWR      APPROX.11.7 KM 1773805.1 |
 JV0385| JV4931 ABERDEEN PROVING GR W HIGH TWR      APPROX.11.7 KM 1782115.1 |
 JV0385| JV5313 EDGEWOOD HARFORD MANOR TANK         APPROX. 9.1 KM 2133449.3 |
 JV0385| JV0384 HARFORD RM 2                         11.822 METERS 28328     |
 JV0385|---------------------------------------------------------------------|
 JV0385
 JV0385                          SUPERSEDED SURVEY CONTROL
 JV0385
 JV0385  NAD 83(1986)-  39 29 22.41517(N)    076 14 41.02383(W) AD(       ) 3
 JV0385  NAD 27      -  39 29 22.02460(N)    076 14 42.18310(W) AD(       ) 3
 JV0385  NAVD 88 (06/15/91)   61.917  (m)          203.14   (f) SUPERSEDED  1 2
 JV0385  NGVD 29              62.16   (m)          203.9    (f) LEVELING    3  
 JV0385  NGVD 29 (11/26/84)   62.163  (m)          203.95   (f) ADJUSTED    1 2
 JV0385
 JV0385.Superseded values are not recommended for survey control.
 JV0385
 JV0385.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0385.See file dsdata.pdf to determine how the superseded data were derived.
 JV0385
 JV0385_MARKER: DS = TRIANGULATION STATION DISK
 JV0385_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0385_STAMPING: HARFORD 1958
 JV0385_MARK LOGO: CGS
 JV0385_PROJECTION: RECESSED 5 CENTIMETERS
 JV0385_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0385+STABILITY: SURFACE MOTION
 JV0385_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0385+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 JV0385
 JV0385  HISTORY     - Date     Condition        Report By
 JV0385  HISTORY     - 1958     MONUMENTED       CGS
 JV0385  HISTORY     - 1971     GOOD             NGS
 JV0385  HISTORY     - 1971     GOOD             NGS
 JV0385  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV0385  HISTORY     - 1991     MARK NOT FOUND   USPSQD
 JV0385  HISTORY     - 20230731 GOOD             MDSHA
 JV0385  HISTORY     - 20230807 GOOD             MDSHA
 JV0385  HISTORY     - 20231213 GOOD             MDSHA
 JV0385
 JV0385                          STATION DESCRIPTION
 JV0385
 JV0385'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0385'THE STATION IS ABOUT 4-1/2 MILES WEST-SOUTHWEST OF THE CENTER OF
 JV0385'ABERDEEN, ABOUT 2-1/2 MILES WEST OF THE JUNCTION OF U.S. HIGHWAY
 JV0385'40 AND STATE HIGHWAY 7 AND IS ON THE SOUTH SIDE OF STATE HIGHWAY
 JV0385'543.  IT IS 42 FEET WEST-NORTHWEST OF TELEPHONE POLE, 39 FEET
 JV0385'NORTH-NORTHEAST OF FENCE LINE AND TRIANGLE-BLAZED FENCE POST, 18
 JV0385'FEET SOUTH OF CENTER OF ROAD AND 2 FEET EAST OF WITNESS POST.
 JV0385'THE MARK IS A STANDARD TRIANGULATION STATION MARK DISK SET IN A
 JV0385'12X12 INCH CONCRETE POST SET FLUSH AND THE DISK IS STAMPED
 JV0385'HARFORD 1958.
 JV0385'
 JV0385'REFERENCE MARK NO. 1 IS 39 FEET NORTH-NORTHEAST OF FENCE LINE,
 JV0385'18 FEET SOUTH-SOUTHWEST OF CENTER OF ROAD AND 8 FEET NORTH-NORTHWEST
 JV0385'OF TELEPHONE POLE.  THE MARK IS A STANDARD REFERENCE MARK DISK
 JV0385'SET IN 12X12 CONCRETE POST SET FLUSH AND THE DISK IS A STAMPED
 JV0385'HARFORD NO. 1 1958.
 JV0385'
 JV0385'REFERENCE MARK NO. 2 IS 39 FEET NORTH-NORTHEAST OF FENCE LINE
 JV0385'AND 17-1/2 FEET SOUTH-SOUTHWEST OF CENTER OF ROAD.  THE MARK IS
 JV0385'STANDARD REFERENCE MARK DISK SET IN 12X12 INCH CONCRETE POST SET
 JV0385'FLUSH AND THE DISK IS STAMPED HARFORD NO 2 1958.
 JV0385'
 JV0385'AZIMUTH MARK IS 18 FEET NORTHEAST OF CENTER OF ROAD AND 4 FEET
 JV0385'NORTHWEST OF WITNESS POST.  THE DISK IS A STANDARD AZIMUTH MARK
 JV0385'DISK SET IN A 12X12 INCH CONCRETE POST PROJECTING ABOUT 2 INCHES
 JV0385'AND THE DISK IS STAMPED HARFORD 1958.
 JV0385'
 JV0385'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV0385'STATE HIGHWAY 7 (ABOUT 2 MILE SOUTHWEST OF ABERDEEN), GO
 JV0385'WESTERLY ON STATE HIGHWAY 7 FOR 2.1 MILES TO JUNCTION OF STATE
 JV0385'HIGHWAY 543, TURN RIGHT AND GO NORTH ON STATE HIGHWAY 543 FOR
 JV0385'0.1 MILE TO THE AZIMUTH MARK ON RIGHT AS DESCRIBED.  CONTINUE ON
 JV0385'STATE HIGHWAY 543 (NORTHERLY) FOR 0.45 MILE TO THE STATION ON
 JV0385'THE LEFT AS DESCRIBED.
 JV0385'
 JV0385'THE TELLUROMETER TRAVERSE DISTANCE TO THE AZIMUTH MARK IS
 JV0385'727.442 METERS OR 2386.60 FEET.
 JV0385'
 JV0385'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV0385
 JV0385                          STATION RECOVERY (1971)
 JV0385
 JV0385'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 JV0385'THE STATION MARK, RMS 1 AND 2 AND THE AZIMUTH MARK WERE ALL
 JV0385'RECOVERED IN GOOD CONDITION.
 JV0385'
 JV0385'TO REACH THE STATION FROM THE HIGH SCHOOL AT ABERDEEN GO ABOUT
 JV0385'2.6 MILES SOUTHWEST ALONG U.S. HIGHWAY 40, THENCE 2.8 MILES WEST
 JV0385'ALONG STATE HIGHWAY 7, THENCE 0.5 MILE NORTH ALONG BELCAMP ROAD
 JV0385'WHICH CROSSES OVER INTERSTATE HIGHWAY 95, THENCE 0.1 MILE
 JV0385'SOUTHEAST ALONG A PAVED ROAD TO THE CREST OF A HILL, 17-1/2 FEET
 JV0385'SOUTHWEST OF THE CENTER LINE OF THE ROAD, 89.9 FEET EAST OF THE
 JV0385'EAST CORNER OF A ONE-STORY BRICK HOUSE OCCUPIED BY T.A. STANLEY,
 JV0385'39-1/2 FEET NORTHEAST OF A 6-INCH OAK TREE, 43-1/2 FEET
 JV0385'NORTHWEST OF POWER POLE NUMBER 382928, AND SET IN THE TOP OF
 JV0385'A CONCRETE POST WHICH IS 2 INCHES BELOW THE SURFACE OF THE
 JV0385'GROUND.
 JV0385'
 JV0385'RM 1 IS STAMPED HARFORD NO 1 1958 AND IS 36.9 FEET SOUTHEAST OF
 JV0385'THE STATION MARK, 17-1/2 FEET SOUTHWEST OF THE CENTER LINE OF THE
 JV0385'ROAD, 110.9 FEET EAST OF THE EAST CORNER OF THE HOUSE, 7 FEET
 JV0385'NORTH OF POWER POLE NUMBER 382928, AND SET IN THE TOP OF A
 JV0385'CONCRETE POST WHICH IS 2 INCHES BELOW THE SURFACE OF THE GROUND.
 JV0385'
 JV0385'RM 2, STAMPED HARFORD NO 2 1958 IS 38.7 FEET NORTHWEST OF THE
 JV0385'STATION MARK, 16-1/2 FEET SOUTHWEST OF THE CENTER LINE OF THE
 JV0385'ROAD, 52-1/2 FEET SOUTHEAST OF THE CENTER LINE OF THE DRIVEWAY
 JV0385'TO THE HOUSE, 81.2 FEET NORTHEAST OF THE EAST CORNER OF THE HOUSE,
 JV0385'ABOUT LEVEL WITH THE ROAD, AND SET IN THE TOP OF A CONCRETE POST
 JV0385'WHICH IS 2 INCHES BELOW THE SURFACE OF THE GROUND.
 JV0385'
 JV0385'THE AZIMUTH MARK, STAMPED HARFORD 1958, IS ABOUT 0.1 MILE
 JV0385'NORTHWEST ALONG A PAVED ROAD FROM THE STATION MARK, THENCE 0.5
 JV0385'MILE SOUTH ALONG BELCAMP ROAD, THENCE 0.65 MILE EAST ALONG STATE
 JV0385'HIGHWAY 7, 104 YARDS NORTHWEST OF THE CENTER OF THE JUNCTION OF
 JV0385'THE HIGHWAY AND CRESWELL ROAD LEADING NORTHWEST, NEAR THE TOP OF
 JV0385'A SMALL HILL, 18-1/2 FEET NORTHEAST OF THE CENTER LINE OF THE
 JV0385'ROAD, 111 FEET SOUTHEAST OF THE CENTER LINE OF A GRAVELED DRIVE
 JV0385'LEADING NORTHEAST TO A BRICK HOUSE, 59-1/2 FEET NORTHWEST OF
 JV0385'POWER POLE NUMBER 339344, 1.0 FOOT WEST OF A METAL WITNESS
 JV0385'POST, ABOUT 3 FEET ABOVE THE LEVEL OF THE ROAD, AND SET IN THE
 JV0385'TOP OF A CONCRETE POST PROJECTING 2 INCHES.
 JV0385'
 JV0385'NOTE--THE AZIMUTH MARK WAS THE ONLY MARK OF THE FOUR THAT WAS
 JV0385'LEVELED TO BY THIS PARTY IN 1971.
 JV0385'
 JV0385'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV0385'6.0 MILES SOUTHWEST OF ABERDEEN.
 JV0385
 JV0385                          STATION RECOVERY (1971)
 JV0385
 JV0385'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0385'6 MI SW FROM ABERDEEN.
 JV0385'ABOUT 2.6 MILES SOUTHWEST ALONG U.S. HIGHWAY 40 FROM THE HIGH
 JV0385'SCHOOL AT ABERDEEN THENCE 2.8 MILES WEST ALONG STATE HIGHWAY 7,
 JV0385'THENCE 0.5 MILE NORTH ALONG BELCAMP ROAD TO A POINT WHERE THE
 JV0385'ROAD CROSSES OVER INTERSTATE HIGHWAY 95, THENCE 0.1 MILE
 JV0385'SOUTHEAST ALONG A PAVED ROAD TO THE CREST OF A HILL, 17 1/2
 JV0385'FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 89.9 FEET EAST
 JV0385'OF THE EAST CORNER OF A ONE-STORY BRICK HOUSE OCCUPIED BY
 JV0385'T.A. STANLEY, 39 1/2 FEET NORTHEAST OF A 6 INCH OAK TREE, 43 1/2
 JV0385'FEET NORTHWEST OF POWER POLE NUMBER 382928, AND SET IN THE TOP OF
 JV0385'A CONCRETE POST WHICH IS 2 INCHES BELOW THE SURFACE OF THE
 JV0385'GROUND.
 JV0385
 JV0385                          STATION RECOVERY (1987)
 JV0385
 JV0385'RECOVERY NOTE BY US POWER SQUADRON 1987 (CET)
 JV0385'MARK NOT FOUND.
 JV0385
 JV0385                          STATION RECOVERY (1991)
 JV0385
 JV0385'RECOVERY NOTE BY US POWER SQUADRON 1991 (ELD)
 JV0385'MARK NOT FOUND.
 JV0385
 JV0385                          STATION RECOVERY (2023)
 JV0385
 JV0385'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV0385'RECOVERED AS DESCRIBED..
 JV0385
 JV0385                          STATION RECOVERY (2023)
 JV0385
 JV0385'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV0385'RECOVERED IN GOOD CONDITION.
 JV0385
 JV0385                          STATION RECOVERY (2023)
 JV0385
 JV0385'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV0385'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0387 ***********************************************************************
 JV0387  DESIGNATION -  HARFORD AZ MK
 JV0387  PID         -  JV0387
 JV0387  STATE/COUNTY-  MD/HARFORD
 JV0387  COUNTRY     -  US
 JV0387  USGS QUAD   -  PERRYMAN (2016)
 JV0387
 JV0387                         *CURRENT SURVEY CONTROL
 JV0387  ______________________________________________________________________
 JV0387* NAD 83(2011) POSITION- 39 29 15.25864(N) 076 14 12.01615(W)   ADJUSTED
 JV0387* NAD 83(2011) ELLIP HT-    21.640 (meters)        (12/12/24)   ADJUSTED
 JV0387* NAD 83(2011) EPOCH   -  2010.00
 JV0387* NAVD 88 ORTHO HEIGHT -    54.692 (meters)      179.44  (feet) ADJUSTED
 JV0387  ______________________________________________________________________
 JV0387  GEOID HEIGHT    -        -33.072 (meters)                     GEOID18
 JV0387  NAD 83(2011) X  -  1,172,691.345 (meters)                     COMP
 JV0387  NAD 83(2011) Y  - -4,787,569.677 (meters)                     COMP
 JV0387  NAD 83(2011) Z  -  4,034,252.471 (meters)                     COMP
 JV0387  LAPLACE CORR    -         -2.33  (seconds)                    DEFLEC18
 JV0387  DYNAMIC HEIGHT  -         54.664 (meters)      179.34  (feet) COMP
 JV0387  MODELED GRAVITY -    980,115.5   (mgal)                       NAVD 88
 JV0387
 JV0387  VERT ORDER      -  FIRST     CLASS I
 JV0387
 JV0387  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0387  Standards:
 JV0387         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0387            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0387  -------------------------------------------------------------------
 JV0387  NETWORK    1.11   1.69           0.49   0.41   0.86      0.08105945
 JV0387  -------------------------------------------------------------------
 JV0387  Click here for local accuracies and other accuracy information.
 JV0387
 JV0387.The horizontal coordinates were established by GPS observations
 JV0387.and adjusted by the MD DEPT OF TRANSP in December 2024.
 JV0387
 JV0387.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0387.been affixed to the stable North American tectonic plate. See 
 JV0387.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0387
 JV0387.The horizontal coordinates are valid at the epoch date displayed above
 JV0387.which is a decimal equivalence of Year/Month/Day.
 JV0387
 JV0387.The orthometric height was determined by differential leveling and
 JV0387.adjusted by the NATIONAL GEODETIC SURVEY
 JV0387.in June 1991.
 JV0387
 JV0387.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0387.GEOID18 height accuracy estimate available here.
 JV0387
 JV0387.Click photographs - Photos may exist for this station.
 JV0387
 JV0387.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0387
 JV0387.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0387
 JV0387.The ellipsoidal height was determined by GPS observations
 JV0387.and is referenced to NAD 83.
 JV0387
 JV0387.The dynamic height is computed by dividing the NAVD 88
 JV0387.geopotential number by the normal gravity value computed on the
 JV0387.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0387.degrees latitude (g = 980.6199 gals.).
 JV0387
 JV0387.The modeled gravity was interpolated from observed gravity values.
 JV0387
 JV0387. The following values were computed from the NAD 83(2011) position.
 JV0387
 JV0387;                    North         East     Units Scale Factor Converg.
 JV0387;SPC MD       -   202,409.614   465,667.896   MT  1.00000679   +0 28 44.7
 JV0387;SPC MD       -   664,072.21  1,527,778.76   sFT  1.00000679   +0 28 44.7
 JV0387;UTM  18      - 4,371,615.129   393,651.702   MT  0.99973925   -0 47 11.4
 JV0387
 JV0387!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0387!SPC MD       -   0.99999660  x   1.00000679  =   1.00000339
 JV0387!UTM  18      -   0.99999660  x   0.99973925  =   0.99973586
 JV0387
 JV0387_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9365171615(NAD 83)
 JV0387
 JV0387                          SUPERSEDED SURVEY CONTROL
 JV0387
 JV0387  NAD 83(1991)-  39 29 15.25720(N)    076 14 12.01460(W) AD(       ) 2
 JV0387  NAD 83(1986)-  39 29 15.25112(N)    076 14 12.02060(W) AD(       ) 2
 JV0387  NAD 27      -  39 29 14.86030(N)    076 14 13.18090(W) AD(       ) 2
 JV0387  NGVD 29              54.94   (m)          180.2    (f) LEVELING    3  
 JV0387  NGVD 29 (11/26/84)   54.937  (m)          180.24   (f) ADJUSTED    1 1
 JV0387
 JV0387.Superseded values are not recommended for survey control.
 JV0387
 JV0387.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0387.See file dsdata.pdf to determine how the superseded data were derived.
 JV0387
 JV0387_MARKER: DZ = AZIMUTH MARK DISK
 JV0387_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0387_STAMPING: HARFORD 1958
 JV0387_MARK LOGO: CGS
 JV0387_PROJECTION: FLUSH
 JV0387_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0387_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0387+STABILITY: SURFACE MOTION
 JV0387_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0387+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 JV0387
 JV0387  HISTORY     - Date     Condition        Report By
 JV0387  HISTORY     - 1958     MONUMENTED       CGS
 JV0387  HISTORY     - 1971     GOOD             NGS
 JV0387  HISTORY     - 1987     GOOD             USPSQD
 JV0387  HISTORY     - 1991     GOOD             USPSQD
 JV0387  HISTORY     - 20080702 GOOD             MDSHA
 JV0387  HISTORY     - 20230731 GOOD             MDSHA
 JV0387  HISTORY     - 20230807 GOOD             MDSHA
 JV0387  HISTORY     - 20231213 GOOD             MDSHA
 JV0387
 JV0387                          STATION DESCRIPTION
 JV0387
 JV0387'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV0387'THE STATION IS ABOUT 4-1/2 MILES WEST-SOUTHWEST OF THE CENTER OF
 JV0387'ABERDEEN AND ABOUT 2.0 MILES WEST OF THE JUNCTION OF U.S. HIGHWAY
 JV0387'40 AND STATE HIGHWAY 7.  IT IS ABOUT 18 FEET NORTHEAST OF THE
 JV0387'CENTER OF ROAD AND 4 FEET WEST-NORTHWEST OF WITNESS POST.  THE
 JV0387'MARK IS A STANDARD AZIMUTH MARK DISK SET IN A 12X12 INCH CONCRETE
 JV0387'POST PROJECTING ABOUT 2 INCHES AND THE DISK IS STAMPED HARFORD
 JV0387'1958.
 JV0387'
 JV0387'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV0387'STATE HIGHWAY 7, ABOUT 2 MILES SOUTHWEST OF ABERDEEN.  GO WESTERLY
 JV0387'ON STATE HIGHWAY 7 FOR 2.1 MILES THE JUNCTION OF STATE HIGHWAY 543,
 JV0387'TURN RIGHT ON STATE HIGHWAY 543 AND GO 0.1 MILE TO THE AZIMUTH
 JV0387'MARK ON RIGHT AS DESCRIBED.
 JV0387'
 JV0387'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV0387
 JV0387                          STATION RECOVERY (1971)
 JV0387
 JV0387'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0387'4.8 MI SW FROM ABERDEEN.
 JV0387'ABOUT 2.6 MILES SOUTHWEST ALONG U.S. HIGHWAY 40 FROM THE HIGH
 JV0387'SCHOOL AT ABERDEEN, THENCE 2.15 MILES WEST ALONG STATE HIGHWAY
 JV0387'7, 104 YARDS NORTHWEST OF THE CENTER OF THE JUNCTION OF THE
 JV0387'HIGHWAY AND CRESWELL ROAD LEADING NORTHWEST, NEAR THE TOP OF A
 JV0387'SMALL HILL, 18 1/2 FEET NORTHEAST OF THE CENTER LINE OF THE
 JV0387'ROAD, 111 FEET SOUTHEAST OF THE CENTER LINE OF A GRAVELED DRIVE
 JV0387'LEADING NORTHEAST TO A BRICK HOUSE, 59 1/2 FEET NORTHWEST OF
 JV0387'POWER POLE NUMBER 339344, 1.0 FOOT WEST OF A METAL WITNESS POST,
 JV0387'ABOUT 3 FEET ABOVE THE LEVEL OF THE ROAD, AND SET IN THE TOP OF A
 JV0387'CONCRETE POST PROJECTING 2 INCHES.
 JV0387
 JV0387                          STATION RECOVERY (1987)
 JV0387
 JV0387'RECOVERY NOTE BY US POWER SQUADRON 1987 (CET)
 JV0387'RECOVERED IN GOOD CONDITION.
 JV0387
 JV0387                          STATION RECOVERY (1991)
 JV0387
 JV0387'RECOVERY NOTE BY US POWER SQUADRON 1991 (ELD)
 JV0387'RECOVERED IN GOOD CONDITION.
 JV0387
 JV0387                          STATION RECOVERY (2008)
 JV0387
 JV0387'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 JV0387'THE MARK IS IN THE FRONT YARD OF A 2 STORY FRAME WHITE VINYL SIDED
 JV0387'HOUSE W/2 CAR GARAGE.  HOUSE NUMBER 1411 CRESWELL ROAD.
 JV0387
 JV0387                          STATION RECOVERY (2023)
 JV0387
 JV0387'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV0387'RECOVERED AS DESCRIBED.
 JV0387
 JV0387                          STATION RECOVERY (2023)
 JV0387
 JV0387'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV0387'RECOVERED IN GOOD CONDITION.
 JV0387
 JV0387                          STATION RECOVERY (2023)
 JV0387
 JV0387'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV0387'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ6438 ***********************************************************************
 AJ6438  DESIGNATION -  HARFORD CBL 0
 AJ6438  PID         -  AJ6438
 AJ6438  STATE/COUNTY-  MD/HARFORD
 AJ6438  COUNTRY     -  US
 AJ6438  USGS QUAD   -  PERRYMAN (2016)
 AJ6438
 AJ6438                         *CURRENT SURVEY CONTROL
 AJ6438  ______________________________________________________________________
 AJ6438* NAD 83(1986) POSITION- 39 29 05.42   (N) 076 09 37.50   (W)   HD_HELD1
 AJ6438* NAVD 88 ORTHO HEIGHT -    19.529 (meters)       64.07  (feet) ADJUSTED
 AJ6438  ______________________________________________________________________
 AJ6438  GEOID HEIGHT    -        -33.178 (meters)                     GEOID18
 AJ6438  DYNAMIC HEIGHT  -         19.520 (meters)       64.04  (feet) COMP
 AJ6438  MODELED GRAVITY -    980,121.1   (mgal)                       NAVD 88
 AJ6438
 AJ6438  VERT ORDER      -  SECOND    CLASS I
 AJ6438
 AJ6438.The horizontal coordinates were determined by differentially corrected
 AJ6438.hand held GPS observations or other comparable positioning techniques
 AJ6438.and have an estimated accuracy of +/- 3 meters.
 AJ6438
 AJ6438.The orthometric height was determined by differential leveling and
 AJ6438.adjusted by the NATIONAL GEODETIC SURVEY
 AJ6438.in September 2008.
 AJ6438
 AJ6438.No vertical observational check was made to the station.
 AJ6438
 AJ6438.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ6438.GEOID18 height accuracy estimate available here.
 AJ6438
 AJ6438.Click photographs - Photos may exist for this station.
 AJ6438
 AJ6438.The dynamic height is computed by dividing the NAVD 88
 AJ6438.geopotential number by the normal gravity value computed on the
 AJ6438.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ6438.degrees latitude (g = 980.6199 gals.).
 AJ6438
 AJ6438.The modeled gravity was interpolated from observed gravity values.
 AJ6438
 AJ6438;                    North         East    Units  Estimated Accuracy
 AJ6438;SPC MD       -   202,163.8     472,230.6     MT  (+/- 3 meters HH1 GPS) 
 AJ6438
 AJ6438_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0020571224(NAD 83)
 AJ6438
 AJ6438                          SUPERSEDED SURVEY CONTROL
 AJ6438
 AJ6438.No superseded survey control is available for this station.
 AJ6438
 AJ6438_MARKER: DQ = CALIBRATION BASE LINE DISK
 AJ6438_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ6438_STAMPING: 0 M 1999
 AJ6438_MARK LOGO: NGS
 AJ6438_PROJECTION: RECESSED 5 CENTIMETERS
 AJ6438_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ6438_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ6438+STABILITY: SURFACE MOTION
 AJ6438_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ6438+SATELLITE: SATELLITE OBSERVATIONS - July 02, 2008
 AJ6438
 AJ6438  HISTORY     - Date     Condition        Report By
 AJ6438  HISTORY     - 1999     MONUMENTED       MDDT
 AJ6438  HISTORY     - 20080702 GOOD             MDSHA
 AJ6438
 AJ6438                          STATION DESCRIPTION
 AJ6438
 AJ6438'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1999
 AJ6438'THE BASE LINE IS LOCATED ON THE ABERDEEN PROVING GROUNDS ARMY BASE IN
 AJ6438'HARFORD COUNTY MARYLAND ABOUT 1.6 KM (1.0 MI) EAST OF THE CITY OF
 AJ6438'ABERDEEN AND JUST EAST OF THE JUNCTION OF U.S. HIGHWAY 40 AND STATE
 AJ6438'ROUTE 715 (MARYLAND AVENUE) ON THE SOUTH SIDE OF MARYLAND AVENUE AT
 AJ6438'THE NORTH EDGE OF THE GOLF COURSE AND JUST NORTH OF A POWER LINE
 AJ6438'RUNNING BETWEEN THE GOLF COURSE AND MARYLAND AVENUE.
 AJ6438'
 AJ6438'THE BASE LINE IS AN SOUTHEAST-NORTHWEST LINE WITH THE 0-METER POINT ON
 AJ6438'THE SOUTHEAST END. IT CONSISTS OF THE 0, 150, 400, AND 1002 METER
 AJ6438'POINTS. THERE IS NO 100-FOOT TAPE CALIBRATION STATION LOCATED AT THIS
 AJ6438'BASE LINE.
 AJ6438'
 AJ6438'TO REACH THE 0-METER POINT FROM INTERSTATE HIGHWAY 95, TAKE EXIT 80
 AJ6438'(CRESSWELL ROAD) GOING SOUTH. TURN NORTHEAST ON STATE ROUTE 7 AND
 AJ6438'PROCEED FOR 5.6 KM (3.5 MI) TO THE JUNCTION WITH U.S. HIGHWAY 40. TURN
 AJ6438'LEFT AND PROCEED NORTHEAST ON U.S. HIGHWAY 40 FOR 1.6 KM (1.0 MI) TO
 AJ6438'SHORT LANE ROAD. TURN RIGHT ON SHORT LANE ROAD AND GO EAST TO THE
 AJ6438'ENTRANCE GATE TO THE BASE. ON THE BASE THE ROAD NAME CHANGES TO
 AJ6438'MARYLAND AVENUE. TO REACH THE O METER POINT FROM THE GUARD STATION
 AJ6438'(BUILDING 5655) GO SOUTH ON MARYLAND AVENUE FOR 0.8 KM (0.5 MI) TO THE
 AJ6438'MONUMENT ON THE RIGHT ATOP A BERM ON THE SOUTH SIDE OF A DITCH JUST
 AJ6438'WEST OF THREE SMALL TREES.
 AJ6438'
 AJ6438'THE 0-METER POINT IS A STANDARD NATIONAL GEODETIC SURVEY (NGS)
 AJ6438'CALIBRATION BASE LINE DISK, STAMPED--0 M 1998--, SET IN THE TOP OF A
 AJ6438'30 CM (12 IN) DIAMETER CONCRETE POST 0.05 M (0.16 FT) BELOW THE
 AJ6438'SURFACE OF THE GROUND.  IT IS 8.0 M (26.3 FT) WEST FROM THE CENTER OF
 AJ6438'THE MOST WESTERLY OF THREE SMALL TREES, 8.75 M (28.71 FT) SOUTHEAST OF
 AJ6438'A POWER POLE NUMBER 56A2, 10.7 M (35.1 FT) SOUTH OF THE SOUTH EDGE OF
 AJ6438'THE ROAD, AND 10.8 M (35.43 FT) NORTHWEST OF A GAS PIPELINE MARKER.
 AJ6438'
 AJ6438'USER NOTES- CBL USERS SHOULD TAKE CARE IN PLUMBING OVER ALL POINTS.
 AJ6438'ELEVATIONS ARE FOR CBL USE ONLY.
 AJ6438'
 AJ6438'THIS CALIBRATION BASE LINE WAS ESTABLISHED WITH ASSISTANCE FROM THE
 AJ6438'MARYLAND DEPARTMENT OF TRANSPORTATION, STATE HIGHWAY ADMINISTRATION.
 AJ6438'FOR MORE INFORMATION PLEASE CONTACT DON BAUMGARTNER, MARYLAND
 AJ6438'DEPARTMENT OF  TRANSPORTATION, STATE HIGHWAY ADMINISTRATION, SURVEY
 AJ6438'SECTION, P.O. BOX 2679, SALISBURY, MD 21802.  TELEPHONE 410-376-3616
 AJ6438'OR CONTACT MARYLAND STATE HIGHWAY ADMINISTRATION, PLATS AND SURVEYS
 AJ6438'DIVISION, MAIL STOP M-101, 707 NORTH CALVERT STREET, BALTIMORE, MD
 AJ6438'21202. TELEPHONE 410-545-8963 .
 AJ6438
 AJ6438                          STATION RECOVERY (2008)
 AJ6438
 AJ6438'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 AJ6438'THE MARK IS LOCATED ABOUT 5.7 MI (9.2 KM) SOUTHWEST OF HAVRE DE GRACE,
 AJ6438'2.6 MI (4.2 KM) EAST-NORTHEAST OF PERRYMAN AND 1.7 MI (2.7 KM) SOUTH
 AJ6438'OF ABERDEEN ON THE ABERDEEN PROVING GROUNDS ARMY BASE.
 AJ6438'
 AJ6438'TO REACH FROM INTERSTATE HIGHWAY 95, TAKE EXIT 80 (CRESSWELL ROAD)
 AJ6438'GOING SOUTH.  TURN NORTHEAST ON STATE ROUTE 7 AND PROCEED FOR 3.5 MI
 AJ6438'(5.6 KM) TO THE JUNCTION WITH U.S.HIGHWAY 40.  TURN LEFT AND PROCEED
 AJ6438'NORTHEAST ON U.S.HIGHWAY 40 FOR 1 MILE TO SHORT LANE ROAD.  TURN ONTO
 AJ6438'SHORT LANE ROAD GOING EAST AND PROCEED TO THE ENTRANCE GATE TO THE
 AJ6438'BASE.  ON THE BASE THE ROAD NAME CHANGES TO MARYLAND AVENUE.  THE
 AJ6438'BASELINE IS LOCATED ON THE SOUTH SIDE OF MARYLAND AVENUE AT THE NORTH
 AJ6438'EDGE OF THE GOLF COURSE AND JUST NORTH OF A POWER LINE RUNNING BETWEEN
 AJ6438'THE GOLF COURSE AND MARYLAND AVENUE.  TO REACH THE 0 METER POINT FROM
 AJ6438'THE GUARD STATION (BLDG 5655), DRIVE 0.5 MI (0.8 KM) ON MARYLAND
 AJ6438'AVENUE TO THE MONUMENT OF THE RIGHT ATOP A BERM ON THE SOUTH SIDE OF A
 AJ6438'DITCH JUST WEST OF THREE SMALL TREES.
 AJ6438'
 AJ6438'IT IS 8.75 M (28.7 FT) SOUTHEAST OF A POWER POLE NUMBER 56A2, 10.7 M
 AJ6438'(35.1 FT) SOUTH OF THE SOUTH EDGE OF THE ROAD AND 10.80 M (35.4 FT)
 AJ6438'NORTHWEST OF A GAS PIPELINE MARKER AND SET IN THE TOP OF A ROUND
 AJ6438'CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ6441 ***********************************************************************
 AJ6441  DESIGNATION -  HARFORD CBL 1002
 AJ6441  PID         -  AJ6441
 AJ6441  STATE/COUNTY-  MD/HARFORD
 AJ6441  COUNTRY     -  US
 AJ6441  USGS QUAD   -  PERRYMAN (2016)
 AJ6441
 AJ6441                         *CURRENT SURVEY CONTROL
 AJ6441  ______________________________________________________________________
 AJ6441* NAD 83(1986) POSITION- 39 29 18.6    (N) 076 10 15.7    (W)   HD_HELD2
 AJ6441* NAVD 88 ORTHO HEIGHT -    15.683 (meters)       51.45  (feet) ADJUSTED
 AJ6441  ______________________________________________________________________
 AJ6441  GEOID HEIGHT    -        -33.155 (meters)                     GEOID18
 AJ6441  DYNAMIC HEIGHT  -         15.675 (meters)       51.43  (feet) COMP
 AJ6441  MODELED GRAVITY -    980,120.9   (mgal)                       NAVD 88
 AJ6441
 AJ6441  VERT ORDER      -  SECOND    CLASS I
 AJ6441
 AJ6441.The horizontal coordinates were established by autonomous hand held GPS
 AJ6441.observations and have an estimated accuracy of +/- 10 meters.
 AJ6441
 AJ6441.The orthometric height was determined by differential leveling and
 AJ6441.adjusted by the NATIONAL GEODETIC SURVEY
 AJ6441.in September 2008.
 AJ6441
 AJ6441.No vertical observational check was made to the station.
 AJ6441
 AJ6441.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ6441.GEOID18 height accuracy estimate available here.
 AJ6441
 AJ6441.Click photographs - Photos may exist for this station.
 AJ6441
 AJ6441.The dynamic height is computed by dividing the NAVD 88
 AJ6441.geopotential number by the normal gravity value computed on the
 AJ6441.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ6441.degrees latitude (g = 980.6199 gals.).
 AJ6441
 AJ6441.The modeled gravity was interpolated from observed gravity values.
 AJ6441
 AJ6441;                    North         East    Units  Estimated Accuracy
 AJ6441;SPC MD       -   202,562.      471,314.      MT  (+/- 10 meters HH2 GPS)
 AJ6441
 AJ6441_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9929871642(NAD 83)
 AJ6441
 AJ6441                          SUPERSEDED SURVEY CONTROL
 AJ6441
 AJ6441.No superseded survey control is available for this station.
 AJ6441
 AJ6441_MARKER: DQ = CALIBRATION BASE LINE DISK
 AJ6441_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ6441_STAMPING: 1002 M 1999
 AJ6441_MARK LOGO: NGS
 AJ6441_PROJECTION: RECESSED 5 CENTIMETERS
 AJ6441_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ6441_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ6441+STABILITY: SURFACE MOTION
 AJ6441_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ6441+SATELLITE: SATELLITE OBSERVATIONS - July 02, 2008
 AJ6441
 AJ6441  HISTORY     - Date     Condition        Report By
 AJ6441  HISTORY     - 1999     MONUMENTED       MDDT
 AJ6441  HISTORY     - 20080702 GOOD             MDSHA
 AJ6441
 AJ6441                          STATION DESCRIPTION
 AJ6441
 AJ6441'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1999
 AJ6441'THE BASE LINE IS LOCATED ON THE ABERDEEN PROVING GROUNDS ARMY BASE IN
 AJ6441'HARFORD COUNTY MARYLAND ABOUT 1.6 KM (1.0 MI) EAST OF THE CITY OF
 AJ6441'ABERDEEN AND JUST EAST OF THE JUNCTION OF U.S. HIGHWAY 40 AND STATE
 AJ6441'ROUTE 715 (MARYLAND AVENUE) ON THE SOUTH SIDE OF MARYLAND AVENUE AT
 AJ6441'THE NORTH EDGE OF THE GOLF COURSE AND JUST NORTH OF A POWER LINE
 AJ6441'RUNNING BETWEEN THE GOLF COURSE AND MARYLAND AVENUE.
 AJ6441'
 AJ6441'THE BASE LINE IS AN SOUTHEAST-NORTHWEST LINE WITH THE 0-METER POINT ON
 AJ6441'THE SOUTHEAST END. IT CONSISTS OF THE 0, 150, 400, AND 1002 METER
 AJ6441'POINTS. THERE IS NO 100-FOOT TAPE CALIBRATION STATION LOCATED AT THIS
 AJ6441'BASE LINE.
 AJ6441'
 AJ6441'TO REACH THE 0-METER POINT FROM INTERSTATE HIGHWAY 95, TAKE EXIT 80
 AJ6441'(CRESSWELL ROAD) GOING SOUTH. TURN NORTHEAST ON STATE ROUTE 7 AND
 AJ6441'PROCEED FOR 5.6 KM (3.5 MI) TO THE JUNCTION WITH U.S. HIGHWAY 40. TURN
 AJ6441'LEFT AND PROCEED NORTHEAST ON U.S. HIGHWAY 40 FOR 1.6 KM (1.0 MI) TO
 AJ6441'SHORT LANE ROAD. TURN RIGHT ON SHORT LANE ROAD AND GO EAST TO THE
 AJ6441'ENTRANCE GATE TO THE BASE. ON THE BASE THE ROAD NAME CHANGES TO
 AJ6441'MARYLAND AVENUE. TO REACH THE O METER POINT FROM THE GUARD STATION
 AJ6441'(BUILDING 5655) GO SOUTH ON MARYLAND AVENUE FOR 0.8 KM (0.5 MI) TO THE
 AJ6441'MONUMENT ON THE RIGHT ATOP A BERM ON THE SOUTH SIDE OF A DITCH JUST
 AJ6441'WEST OF THREE SMALL TREES.
 AJ6441'
 AJ6441'THE 1002-METER POINT IS A STANDARD NGS CALIBRATION BASE LINE DISK,
 AJ6441'STAMPED--1000 M 1998--, SET IN THE TOP OF A 30 CM (12 IN) DIAMETER
 AJ6441'CONCRETE POST 0.05 M (0.16 FT) BELOW THE SURFACE OF THE GROUND. TO
 AJ6441'REACH THE 1000 METER POINT FROM THE GUARD STATION (BUILDING 5655)
 AJ6441'AFTER PASSING THE ENTRY GATE TURN HARD RIGHT ONTO A GRAVEL ROAD
 AJ6441'RUNNING EAST-WEST AND PARALLEL WITH THE PERIMETER FENCE.  THE GRAVEL
 AJ6441'ROAD CONNECTS TO THE WEST END OF A PAVED PARKING AREA ON THE SOUTH
 AJ6441'SIDE OF THE ROAD AND JUST BEYOND THE GUARD STATION.  DRIVE WEST ON THE
 AJ6441'GRAVEL ROAD PAST ITS INTERSECTION WITH ANOTHER GRAVEL ROAD LEADING
 AJ6441'SOUTH.  THE MONUMENT IS LOCATED IN THE GRASS ISLAND FORMED BY THE TWO
 AJ6441'GRAVEL ROADS AND AN ELECTRIC SUBSTATION.  IT IS 9.9 M (32.5 FT) SOUTH
 AJ6441'OF THE SOUTH EDGE OF THE GRAVEL ROAD RUNNING EAST-WEST, 16.76 M EDGE
 AJ6441'OF THE GRAVEL ROAD RUNNING EAST-WEST, 16.76 M (54.99 FT) SOUTH OF THE
 AJ6441'CHAIN LINK FENCE, 17.3 M (56.8 FT) NORTHWEST OF AN ELECTRICAL BOX
 AJ6441'PEDESTAL ALONG THE GRAVEL ROAD LEADING SOUTH, 23.72 M (77.82 FT) EAST
 AJ6441'OF POWER POLE NUMBER 56A21, AND 41.37 M (135.73 FT) EAST-SOUTHEAST OF
 AJ6441'THE NORTHEAST CORNER OF A FENCE AROUND THE SUBSTATIO
 AJ6441'
 AJ6441'USER NOTES- CBL USERS SHOULD TAKE CARE IN PLUMBING OVER ALL POINTS.
 AJ6441'ELEVATIONS ARE FOR CBL USE ONLY.
 AJ6441'
 AJ6441'THIS CALIBRATION BASE LINE WAS ESTABLISHED WITH ASSISTANCE FROM THE
 AJ6441'MARYLAND DEPARTMENT OF TRANSPORTATION, STATE HIGHWAY ADMINISTRATION.
 AJ6441'FOR MORE INFORMATION PLEASE CONTACT DON BAUMGARTNER, MARYLAND
 AJ6441'DEPARTMENT OF  TRANSPORTATION, STATE HIGHWAY ADMINISTRATION, SURVEY
 AJ6441'SECTION, P.O. BOX 2679, SALISBURY, MD 21802.  TELEPHONE 410-376-3616
 AJ6441'OR CONTACT MR. DONALD MULCARE, NGS STATE ADVISOR, MARYLAND STATE
 AJ6441'HIGHWAY ADMINISTRATION, PLA AND SURVEYS DIVISION, MAIL STOP M-101, 707
 AJ6441'NORTH CALVERT STREET, BALTIMORE, MD 21202. TELEPHONE 410-545-8963 .
 AJ6441
 AJ6441                          STATION RECOVERY (2008)
 AJ6441
 AJ6441'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 AJ6441'THE MARK IS LOCATED ABOUT 5.9 MI (9.6 KM) SOUTHWEST OF HAVRE DE GRACE,
 AJ6441'2.2 MI (3.6 KM) NORTHEAST OF PERRYMAN AND 1.5 MI (2.4 KM)
 AJ6441'SOUTH-SOUTHWEST OF ABERDEEN ON THE ABERDEEN PROVING GROUNDS.
 AJ6441'
 AJ6441'TO REACH FROM INTERSTATE HIGHWAY 95 TAKE EXIT 80 (CRESSWELL ROAD)
 AJ6441'GOING SOUTH, TURN NORTHEAST ON STATE ROUTE 7 AND PROCEED 3.5 MI (5.6
 AJ6441'KM) TO THE JUNCTION WITH U.S.HIGHWAY 40.  TURN LEFT AND PROCEED
 AJ6441'NORTHEAST ON U.S.HIGHWAY 40 FOR 1.0 MI (1.6 KM) TO SHORT LANE ROAD.
 AJ6441'TURN RIGHT AND PROCEED EAST ON SHORT LANE ROAD TO THE ENTRANCE GATE TO
 AJ6441'THE BASE.  ON THE BASE THE ROAD NAME CHANGES TO MARYLAND AVENUE.  THE
 AJ6441'BASELINE IS LOCATED ON THE SOUTH SIDE OF A POWER LINE RUNNING BETWEEN
 AJ6441'THE GOLF COURSE AND MARYLAND AVENUE.  TO REACH THE 1002 METER POINT
 AJ6441'FROM THE GUARD STATION (BLDG 5655) AFTER PASSING THE ENTRY GATE TURN
 AJ6441'HARD RIGHT ONTO A GRAVEL ROAD RUNNING EAST-WEST AND PARALLEL WITH THE
 AJ6441'PERIMETER FENCE.  THE GRAVEL ROAD CONNECTS TO THE WEST END OF A PAVED
 AJ6441'PARKING AREA ON THE SOUTH SIDE OF THE ROAD AND JUST BEYOND THE GUARD
 AJ6441'STATION.  DRIVE WEST ON THE GRAVEL ROAD PAST ITS INTERSECTION WITH
 AJ6441'ANOTHER GRAVEL ROAD LEADING SOUTH.  THE MONUMENT IS LOCATED IN THE
 AJ6441'GRASS ISLAND FORMED BY THE TWO GRAVEL ROADS AND AN ELECTRIC
 AJ6441'SUBSTATION.
 AJ6441'
 AJ6441'IT IS 9.9 M (32.5 FT) SOUTH OF THE SOUTH EDGE OF THE GRAVEL ROAD
 AJ6441'RUNNING EAST-WEST, 16.76 M (55.0 FT) SOUTH OF THE CHAIN LINK FENCE,
 AJ6441'17.3 M (56.8 FT) NORTHWEST OF AN ELECTRICAL BOX PEDESTAL ALONG THE
 AJ6441'GRAVEL ROAD LEADING SOUTH, 23.72 M (77.8 FT) EAST OF A POWER POLE
 AJ6441'NUMBER 56A21, AND 41.37 M (135.7 FT) EAST-SOUTHEAST OF THE NORTHEAST
 AJ6441'CORNER OF A FENCE AROUND THE SUBSTATION AND SET IN THE TOP OF A ROUND
 AJ6441'CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ6439 ***********************************************************************
 AJ6439  DESIGNATION -  HARFORD CBL 150
 AJ6439  PID         -  AJ6439
 AJ6439  STATE/COUNTY-  MD/HARFORD
 AJ6439  COUNTRY     -  US
 AJ6439  USGS QUAD   -  PERRYMAN (2016)
 AJ6439
 AJ6439                         *CURRENT SURVEY CONTROL
 AJ6439  ______________________________________________________________________
 AJ6439* NAD 83(1986) POSITION- 39 29 07.40   (N) 076 09 43.23   (W)   HD_HELD1
 AJ6439* NAVD 88 ORTHO HEIGHT -    17.965 (meters)       58.94  (feet) ADJUSTED
 AJ6439  ______________________________________________________________________
 AJ6439  GEOID HEIGHT    -        -33.174 (meters)                     GEOID18
 AJ6439  DYNAMIC HEIGHT  -         17.956 (meters)       58.91  (feet) COMP
 AJ6439  MODELED GRAVITY -    980,121.0   (mgal)                       NAVD 88
 AJ6439
 AJ6439  VERT ORDER      -  SECOND    CLASS I
 AJ6439
 AJ6439.The horizontal coordinates were determined by differentially corrected
 AJ6439.hand held GPS observations or other comparable positioning techniques
 AJ6439.and have an estimated accuracy of +/- 3 meters.
 AJ6439
 AJ6439.The orthometric height was determined by differential leveling and
 AJ6439.adjusted by the NATIONAL GEODETIC SURVEY
 AJ6439.in September 2008.
 AJ6439
 AJ6439.No vertical observational check was made to the station.
 AJ6439
 AJ6439.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ6439.GEOID18 height accuracy estimate available here.
 AJ6439
 AJ6439.Click photographs - Photos may exist for this station.
 AJ6439
 AJ6439.The dynamic height is computed by dividing the NAVD 88
 AJ6439.geopotential number by the normal gravity value computed on the
 AJ6439.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ6439.degrees latitude (g = 980.6199 gals.).
 AJ6439
 AJ6439.The modeled gravity was interpolated from observed gravity values.
 AJ6439
 AJ6439;                    North         East    Units  Estimated Accuracy
 AJ6439;SPC MD       -   202,223.6     472,093.1     MT  (+/- 3 meters HH1 GPS) 
 AJ6439
 AJ6439_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0006971287(NAD 83)
 AJ6439
 AJ6439                          SUPERSEDED SURVEY CONTROL
 AJ6439
 AJ6439.No superseded survey control is available for this station.
 AJ6439
 AJ6439_MARKER: DQ = CALIBRATION BASE LINE DISK
 AJ6439_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ6439_STAMPING: 150 M 1999
 AJ6439_MARK LOGO: NGS
 AJ6439_PROJECTION: RECESSED 5 CENTIMETERS
 AJ6439_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ6439_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ6439+STABILITY: SURFACE MOTION
 AJ6439_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ6439+SATELLITE: SATELLITE OBSERVATIONS - July 02, 2008
 AJ6439
 AJ6439  HISTORY     - Date     Condition        Report By
 AJ6439  HISTORY     - 1999     MONUMENTED       MDDT
 AJ6439  HISTORY     - 20080702 GOOD             MDSHA
 AJ6439
 AJ6439                          STATION DESCRIPTION
 AJ6439
 AJ6439'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1999
 AJ6439'THE BASE LINE IS LOCATED ON THE ABERDEEN PROVING GROUNDS ARMY BASE IN
 AJ6439'HARFORD COUNTY MARYLAND ABOUT 1.6 KM (1.0 MI) EAST OF THE CITY OF
 AJ6439'ABERDEEN AND JUST EAST OF THE JUNCTION OF U.S. HIGHWAY 40 AND STATE
 AJ6439'ROUTE 715 (MARYLAND AVENUE) ON THE SOUTH SIDE OF MARYLAND AVENUE AT
 AJ6439'THE NORTH EDGE OF THE GOLF COURSE AND JUST NORTH OF A POWER LINE
 AJ6439'RUNNING BETWEEN THE GOLF COURSE AND MARYLAND AVENUE.
 AJ6439'
 AJ6439'THE BASE LINE IS AN SOUTHEAST-NORTHWEST LINE WITH THE 0-METER POINT ON
 AJ6439'THE SOUTHEAST END. IT CONSISTS OF THE 0, 150, 400, AND 1002 METER
 AJ6439'POINTS. THERE IS NO 100-FOOT TAPE CALIBRATION STATION LOCATED AT THIS
 AJ6439'BASE LINE.
 AJ6439'
 AJ6439'TO REACH THE 0-METER POINT FROM INTERSTATE HIGHWAY 95, TAKE EXIT 80
 AJ6439'(CRESSWELL ROAD) GOING SOUTH. TURN NORTHEAST ON STATE ROUTE 7 AND
 AJ6439'PROCEED FOR 5.6 KM (3.5 MI) TO THE JUNCTION WITH U.S. HIGHWAY 40. TURN
 AJ6439'LEFT AND PROCEED NORTHEAST ON U.S. HIGHWAY 40 FOR 1.6 KM (1.0 MI) TO
 AJ6439'SHORT LANE ROAD. TURN RIGHT ON SHORT LANE ROAD AND GO EAST TO THE
 AJ6439'ENTRANCE GATE TO THE BASE. ON THE BASE THE ROAD NAME CHANGES TO
 AJ6439'MARYLAND AVENUE. TO REACH THE O METER POINT FROM THE GUARD STATION
 AJ6439'(BUILDING 5655) GO SOUTH ON MARYLAND AVENUE FOR 0.8 KM (0.5 MI) TO THE
 AJ6439'MONUMENT ON THE RIGHT ATOP A BERM ON THE SOUTH SIDE OF A DITCH JUST
 AJ6439'WEST OF THREE SMALL TREES.
 AJ6439'
 AJ6439'THE 150-METER POINT IS A STANDARD NGS CALIBRATION BASE LINE DISK,
 AJ6439'STAMPED--150 M 1998--, SET IN THE TOP OF A 30 CM (12 IN) DIAMETER
 AJ6439'CONCRETE POST 0.05 M (0.16 FT) BELOW THE SURFACE OF THE GROUND. IT IS
 AJ6439'0.6 KM (0.4 MI) SOUTHEAST OF GUARD STATION (BUILDING 5655) ON THE
 AJ6439'SOUTH SIDE OF MARYLAND AVENUE BETWEEN THE DITCH ALONG THE ROAD AND A
 AJ6439'POWER LINE RUNNING ON THE NORTH SIDE OF THE GOLF COURSE, 5.3 M (17.4
 AJ6439'FT) NORTH OF THE LINE FORMED BY THE POWER POLES, 15.82 M (51.90 FT)
 AJ6439'SOUTH OF THE SOUTH EDGE OF THE ROAD, 17.95 M (58.89 FT) SOUTHEAST OF
 AJ6439'POWER POLE NUMBER 56A5 AND 35.75 M (117.29 FT) NORTHWEST OF POWER POLE
 AJ6439'NUMBER 56A4. USER NOTES- CBL USERS SHOULD TAKE CARE IN PLUMBING OVER
 AJ6439'ALL POINTS. ELEVATIONS ARE FOR CBL USE ONLY.
 AJ6439'
 AJ6439'THIS CALIBRATION BASE LINE WAS ESTABLISHED WITH ASSISTANCE FROM THE
 AJ6439'MARYLAND DEPARTMENT OF TRANSPORTATION, STATE HIGHWAY ADMINISTRATION.
 AJ6439'FOR MORE INFORMATION PLEASE CONTACT DON BAUMGARTNER, MARYLAND
 AJ6439'DEPARTMENT OF  TRANSPORTATION, STATE HIGHWAY ADMINISTRATION, SURVEY
 AJ6439'SECTION, P.O. BOX 2679, SALISBURY, MD 21802.  TELEPHONE 410-376-3616
 AJ6439'OR CONTACT MARYLAND STATE HIGHWAY ADMINISTRATION, PLATS AND SURVEYS
 AJ6439'DIVISION, MAIL STOP M-101, 707 NORTH CALVERT STREET, BALTIMORE, MD
 AJ6439'21202. TELEPHONE 410-545-8963 .
 AJ6439
 AJ6439                          STATION RECOVERY (2008)
 AJ6439
 AJ6439'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 AJ6439'THE MARK IS LOCATED ABOUT 5.8 MI (9.3 KM) SOUTHWEST OF HAVRE DE GRACE,
 AJ6439'2.5 MI (4.0 KM) EAST-NORTHEAST OF PERRYMAN AND 1.7 MI (2.7 KM) SOUTH
 AJ6439'OF ABERDEEN ON THE ABERDEEN PROVING GROUNDS ARMY BASE.
 AJ6439'
 AJ6439'TO REACH FROM INTERSTATE HIGHWAY 95, TAKE EXIT 80 (CRESSWELL ROAD)
 AJ6439'GOING SOUTH.  TURN NORTHEAST ON STATE ROUTE 7 AND PROCEED 3.5 MI (5.6
 AJ6439'KM) TO THE JUNCTION WITH U.S.HIGHWAY 40.  TURN LEFT AND PROCEED
 AJ6439'NORTHEAST FOR 1.0 MI (1.6 KM) TO SHORT LANE ROAD.  TURN ONTO SHORT
 AJ6439'LANE ROAD GOING EAST AND PROCEED TO THE ENTRANCE GATE TO THE BASE.  ON
 AJ6439'THE BASE THE ROAD NAME CHANGES TO MARYLAND AVENUE.  THE BASELINE IS
 AJ6439'LOCATED ON THE SOUTH SIDE OF MARYLAND AVENUE AT THE NORTH EDGE OF THE
 AJ6439'GOLF COURSE AND JUST NORTH OF A POWER LINE RUNNING BETWEEN THE GOLF
 AJ6439'COURSE AND MARYLAND AVENUE.  TO REACH THE 150 METER POINT FROM THE
 AJ6439'GUARD STATION (BLDG 5655), DRIVE 0.4 MI (0.6 KM) ON MARYLAND AVENUE TO
 AJ6439'THE MONUMENT ON THE RIGHT BETWEEN THE DITCH ALONG THE ROAD AND THE
 AJ6439'POWER LINE RUNNING ON THE NORTH SIDE OF THE GOLF COURSE.
 AJ6439'
 AJ6439'IT IS 5.3 M (17.4 FT) NORTH OF THE LINE FORMED BY THE POWER POLES,
 AJ6439'15.82 M (51.9 FT) SOUTH OF THE SOUTH EDGE OF THE ROAD, 17.95 M (58.9
 AJ6439'FT) SOUTHEAST OF OF A POWER POLE NUMBER 56A5 AND 35.75 M (117.3 FT)
 AJ6439'NORTHWEST OF A POWER POLE NUMBER 56A4 AND SET IN THE TOP OF A ROUND
 AJ6439'CONCRETE MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ6440 ***********************************************************************
 AJ6440  DESIGNATION -  HARFORD CBL 400
 AJ6440  PID         -  AJ6440
 AJ6440  STATE/COUNTY-  MD/HARFORD
 AJ6440  COUNTRY     -  US
 AJ6440  USGS QUAD   -  PERRYMAN (2016)
 AJ6440
 AJ6440                         *CURRENT SURVEY CONTROL
 AJ6440  ______________________________________________________________________
 AJ6440* NAD 83(1986) POSITION- 39 29 10.7    (N) 076 09 52.8    (W)   HD_HELD2
 AJ6440* NAVD 88 ORTHO HEIGHT -    15.437 (meters)       50.65  (feet) ADJUSTED
 AJ6440  ______________________________________________________________________
 AJ6440  GEOID HEIGHT    -        -33.169 (meters)                     GEOID18
 AJ6440  DYNAMIC HEIGHT  -         15.429 (meters)       50.62  (feet) COMP
 AJ6440  MODELED GRAVITY -    980,121.0   (mgal)                       NAVD 88
 AJ6440
 AJ6440  VERT ORDER      -  SECOND    CLASS I
 AJ6440
 AJ6440.The horizontal coordinates were established by autonomous hand held GPS
 AJ6440.observations and have an estimated accuracy of +/- 10 meters.
 AJ6440
 AJ6440.The orthometric height was determined by differential leveling and
 AJ6440.adjusted by the NATIONAL GEODETIC SURVEY
 AJ6440.in September 2008.
 AJ6440
 AJ6440.No vertical observational check was made to the station.
 AJ6440
 AJ6440.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ6440.GEOID18 height accuracy estimate available here.
 AJ6440
 AJ6440.Click photographs - Photos may exist for this station.
 AJ6440
 AJ6440.The dynamic height is computed by dividing the NAVD 88
 AJ6440.geopotential number by the normal gravity value computed on the
 AJ6440.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ6440.degrees latitude (g = 980.6199 gals.).
 AJ6440
 AJ6440.The modeled gravity was interpolated from observed gravity values.
 AJ6440
 AJ6440;                    North         East    Units  Estimated Accuracy
 AJ6440;SPC MD       -   202,323.      471,863.      MT  (+/- 10 meters HH2 GPS)
 AJ6440
 AJ6440_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9984271392(NAD 83)
 AJ6440
 AJ6440                          SUPERSEDED SURVEY CONTROL
 AJ6440
 AJ6440.No superseded survey control is available for this station.
 AJ6440
 AJ6440_MARKER: DQ = CALIBRATION BASE LINE DISK
 AJ6440_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ6440_STAMPING: 400 M 1999
 AJ6440_MARK LOGO: NGS
 AJ6440_PROJECTION: RECESSED 5 CENTIMETERS
 AJ6440_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ6440_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ6440+STABILITY: SURFACE MOTION
 AJ6440_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ6440+SATELLITE: SATELLITE OBSERVATIONS - July 02, 2008
 AJ6440
 AJ6440  HISTORY     - Date     Condition        Report By
 AJ6440  HISTORY     - 1999     MONUMENTED       MDDT
 AJ6440  HISTORY     - 20080702 POOR             MDSHA
 AJ6440
 AJ6440                          STATION DESCRIPTION
 AJ6440
 AJ6440'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1999
 AJ6440'THE BASE LINE IS LOCATED ON THE ABERDEEN PROVING GROUNDS ARMY BASE IN
 AJ6440'HARFORD COUNTY MARYLAND ABOUT 1.6 KM (1.0 MI) EAST OF THE CITY OF
 AJ6440'ABERDEEN AND JUST EAST OF THE JUNCTION OF U.S. HIGHWAY 40 AND STATE
 AJ6440'ROUTE 715 (MARYLAND AVENUE) ON THE SOUTH SIDE OF MARYLAND AVENUE AT
 AJ6440'THE NORTH EDGE OF THE GOLF COURSE AND JUST NORTH OF A POWER LINE
 AJ6440'RUNNING BETWEEN THE GOLF COURSE AND MARYLAND AVENUE.
 AJ6440'
 AJ6440'THE BASE LINE IS AN SOUTHEAST-NORTHWEST LINE WITH THE 0-METER POINT ON
 AJ6440'THE SOUTHEAST END. IT CONSISTS OF THE 0, 150, 400, AND 1002 METER
 AJ6440'POINTS. THERE IS NO 100-FOOT TAPE CALIBRATION STATION LOCATED AT THIS
 AJ6440'BASE LINE.
 AJ6440'
 AJ6440'TO REACH THE 0-METER POINT FROM INTERSTATE HIGHWAY 95, TAKE EXIT 80
 AJ6440'(CRESSWELL ROAD) GOING SOUTH. TURN NORTHEAST ON STATE ROUTE 7 AND
 AJ6440'PROCEED FOR 5.6 KM (3.5 MI) TO THE JUNCTION WITH U.S. HIGHWAY 40. TURN
 AJ6440'LEFT AND PROCEED NORTHEAST ON U.S. HIGHWAY 40 FOR 1.6 KM (1.0 MI) TO
 AJ6440'SHORT LANE ROAD. TURN RIGHT ON SHORT LANE ROAD AND GO EAST TO THE
 AJ6440'ENTRANCE GATE TO THE BASE. ON THE BASE THE ROAD NAME CHANGES TO
 AJ6440'MARYLAND AVENUE. TO REACH THE O METER POINT FROM THE GUARD STATION
 AJ6440'(BUILDING 5655) GO SOUTH ON MARYLAND AVENUE FOR 0.8 KM (0.5 MI) TO THE
 AJ6440'MONUMENT ON THE RIGHT ATOP A BERM ON THE SOUTH SIDE OF A DITCH JUST
 AJ6440'WEST OF THREE SMALL TREES.
 AJ6440'
 AJ6440'THE 400-METER POINT IS A STANDARD NGS CALIBRATION BASE LINE DISK,
 AJ6440'STAMPED--400 M 1998--SET IN THE TOP OF A 30 CM (12 IN) DIAMETER
 AJ6440'CONCRETE POST 0.05 M (0.16 FT) BELOW THE SURFACE OF THE GROUND. IT IS
 AJ6440'0.40 KM (0.25 MI) SOUTHEAST OF GUARD STATION (BUILDING 5655) ON THE
 AJ6440'SOUTH SIDE OF MARYLAND AVENUE BETWEEN THE ROAD AND A POWER LINE
 AJ6440'RUNNING EAST-WEST AT THE NORTH SIDE OF THE GOLF COURSE, IT IS 7.7 M
 AJ6440'(25.3 FT) NORTH OF THE LINE FORMED BY THE POWER POLES, 17.5 M (57.4
 AJ6440'FT) FROM THE CENTER OF A TREE, 20.75 M (68.08 FT) NORTHWEST OF POWER
 AJ6440'POLE NUMBER 56A9, 24.2 M (79.4 FT) SOUTH OF THE SOUTH EDGE OF THE ROAD
 AJ6440'AND 36.25 M (118.93 FT) NORTHEAST OF POWER POLE NUMBER 56A10. USER
 AJ6440'NOTES- CBL USERS SHOULD TAKE CARE IN PLUMBING OVER ALL POINTS.
 AJ6440'ELEVATIONS ARE FOR CBL USE ONLY.
 AJ6440'
 AJ6440'THIS CALIBRATION BASE LINE WAS ESTABLISHED WITH ASSISTANCE FROM THE
 AJ6440'MARYLAND DEPARTMENT OF TRANSPORTATION, STATE HIGHWAY ADMINISTRATION.
 AJ6440'FOR MORE INFORMATION PLEASE CONTACT DON BAUMGARTNER, MARYLAND
 AJ6440'DEPARTMENT OF  TRANSPORTATION, STATE HIGHWAY ADMINISTRATION, SURVEY
 AJ6440'SECTION, P.O. BOX 2679, SALISBURY, MD 21802.  TELEPHONE 410-376-3616
 AJ6440'OR CONTACT MARYLAND STATE HIGHWAY ADMINISTRATION, PLATS AND SURVEYS
 AJ6440'DIVISION, MAIL STOP M-101, 707 NORTH CALVERT STREET, BALTIMORE, MD
 AJ6440'21202. TELEPHONE 410-545-8963 .
 AJ6440
 AJ6440                          STATION RECOVERY (2008)
 AJ6440
 AJ6440'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (DCS)
 AJ6440'THE MARK IS LOCATED ABOUT 5.8 MI (9.3 KM) SOUTHWEST OF HAVRE DE GRACE,
 AJ6440'2.4 MI (3.9 KM) EAST-NORTHEAST OF PERRYMAN AND 1.6 MI (2.6 KM) SOUTH
 AJ6440'OF ABERDEEN ON THE ABERDEEN PROVING GROUNDS ARMY BASE.
 AJ6440'
 AJ6440'TO REACH THE STATION FROM INTERSTATE HIGHWAY 95, TAKE EXIT 80
 AJ6440'(CRESSWELL ROAD) GOING SOUTH.  TURN NORTHEAST ON STATE ROUTE 7 AND
 AJ6440'PROCEED FOR 3.5 MI (5.6 KM) TO THE JUNCTION WITH U.S.HIGHWAY 40.  TURN
 AJ6440'LEFT AND PROCEED NORTHEAST ON U.S.HIGHWAY 40 FOR 1.0 MI (1.6 KM) TO
 AJ6440'SHORT LANE ROAD.  TURN ONTO SHORT LANE ROAD GOING EAST AND PROCEED TO
 AJ6440'THE ENTRANCE GATE TO THE BASE.  ON THE BASE THE ROAD NAME CHANGES TO
 AJ6440'MARYLAND AVENUE.  THE BASELINE IS LOCATED ON THE SOUTH SIDE OF
 AJ6440'MARYLAND AVENUE AT THE NORTH EDGE OF THE GOLF COURSE AND JUST NORTH OF
 AJ6440'A POWER LINE RUNNING BETWEEN THE GOLF COURSE AND MARYLAND AVENUE.
 AJ6440'
 AJ6440'TO REACH THE 400 METER POINT FROM THE GUARD STATION (BLDG 5655) DRIVE
 AJ6440'0.25 MI (0.4 KM) ON MARYLAND AVENUE TO THE MONUMENT ON THE RIGHT
 AJ6440'BETWEEN THE ROAD AND A POWER LINE RUNNING EAST-WEST AT THE NORTH SIDE
 AJ6440'OF THE GOLF COURSE.  IT IS 7.7 M (25.3 FT) NORTH OF THE LINE FORMED BY
 AJ6440'POWER POLES, 17.5 M (57.4 FT) FROM THE CENTER OF A TREE, 20.75 M (68.1
 AJ6440'FT) NORTHWEST OF A POWER POLE NUMBER 56A9, 24.2 M (79.4 FT) SOUTH OF
 AJ6440'THE SOUTH EDGE OF THE ROAD AND 36.25 M (118.9 FT) NORTHEAST OF A POWER
 AJ6440'POLE NUMBER 56A10 AND SET IN THE TOP OF A ROUND CONCRETE MONUMENT.
 AJ6440'
 AJ6440'THE MARK HAS SINCE BEEN DISTURBED DUE TO CONSTRUCTION.  IT WAS
 AJ6440'APPARENTLY HIT BY A BULLDOZER AND PUSHED SLIGHTLY.  IT IS LEANING AND
 AJ6440'IS PARTIALLY EXPOSED AT THE TIME OF RECOVERY AND CONSTRUCTION IS NOT
 AJ6440'COMPLETE AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0386 ***********************************************************************
 JV0386  DESIGNATION -  HARFORD RM 1
 JV0386  PID         -  JV0386
 JV0386  STATE/COUNTY-  MD/HARFORD
 JV0386  COUNTRY     -  US
 JV0386  USGS QUAD   -  PERRYMAN (2016)
 JV0386
 JV0386                         *CURRENT SURVEY CONTROL
 JV0386  ______________________________________________________________________
 JV0386* NAD 83(1986) POSITION- 39 29 22.34   (N) 076 14 40.56   (W)   HD_HELD1
 JV0386* NAVD 88 ORTHO HEIGHT -    61.721 (meters)      202.50  (feet) ADJUSTED
 JV0386  ______________________________________________________________________
 JV0386  GEOID HEIGHT    -        -33.058 (meters)                     GEOID18
 JV0386  DYNAMIC HEIGHT  -         61.690 (meters)      202.39  (feet) COMP
 JV0386  MODELED GRAVITY -    980,115.4   (mgal)                       NAVD 88
 JV0386
 JV0386  VERT ORDER      -  FIRST     CLASS II
 JV0386
 JV0386.The horizontal coordinates were determined by differentially corrected
 JV0386.hand held GPS observations or other comparable positioning techniques
 JV0386.and have an estimated accuracy of +/- 3 meters.
 JV0386
 JV0386.The orthometric height was determined by differential leveling and
 JV0386.adjusted by the NATIONAL GEODETIC SURVEY
 JV0386.in June 1991.
 JV0386
 JV0386.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0386.GEOID18 height accuracy estimate available here.
 JV0386
 JV0386.Click photographs - Photos may exist for this station.
 JV0386
 JV0386.The dynamic height is computed by dividing the NAVD 88
 JV0386.geopotential number by the normal gravity value computed on the
 JV0386.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0386.degrees latitude (g = 980.6199 gals.).
 JV0386
 JV0386.The modeled gravity was interpolated from observed gravity values.
 JV0386
 JV0386;                    North         East    Units  Estimated Accuracy
 JV0386;SPC MD       -   202,622.3     464,984.0     MT  (+/- 3 meters HH1 GPS) 
 JV0386
 JV0386_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9297271842(NAD 83)
 JV0386
 JV0386                          SUPERSEDED SURVEY CONTROL
 JV0386
 JV0386  NGVD 29 (11/26/84)   61.967  (m)          203.30   (f) ADJUSTED    1 2
 JV0386
 JV0386.Superseded values are not recommended for survey control.
 JV0386
 JV0386.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0386.See file dsdata.pdf to determine how the superseded data were derived.
 JV0386
 JV0386_MARKER: DR = REFERENCE MARK DISK
 JV0386_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0386_STAMPING: HARFORD NO 1 1958
 JV0386_MARK LOGO: CGS
 JV0386_PROJECTION: RECESSED 3 CENTIMETERS
 JV0386_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0386+STABILITY: SURFACE MOTION
 JV0386_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV0386+SATELLITE: SATELLITE OBSERVATIONS - August 07, 2023
 JV0386
 JV0386  HISTORY     - Date     Condition        Report By
 JV0386  HISTORY     - 1958     MONUMENTED       CGS
 JV0386  HISTORY     - 1971     GOOD             NGS
 JV0386  HISTORY     - 1987     GOOD             USPSQD
 JV0386  HISTORY     - 20060930 MARK NOT FOUND   USPSQD
 JV0386  HISTORY     - 20230731 GOOD             MDSHA
 JV0386  HISTORY     - 20230807 GOOD             MDSHA
 JV0386
 JV0386                          STATION DESCRIPTION
 JV0386
 JV0386'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0386'6 MI SW FROM ABERDEEN.
 JV0386'ABOUT 2.6 MILES SOUTHWEST ALONG U.S. HIGHWAY 40 FROM THE HIGH
 JV0386'SCHOOL AT ABERDEEN, THENCE 2.8 MILES WEST ALONG STATE HIGHWAY 7,
 JV0386'THENCE 0.5 MILE NORTH ALONG BELCAMP ROAD, THENCE 0.1 MILE
 JV0386'SOUTHEAST ALONG A PAVED ROAD TO THE CREST OF A HILL, NEAR THE EAST
 JV0386'CORNER OF THE LAWN AROUND THE RESIDENCE OF T.A. STANLEY, 17 1/2
 JV0386'FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 110.9 FEET EAST
 JV0386'OF THE EAST CORNER OF THE HOUSE, 7 FEET NORTH OF POWER POLE
 JV0386'382928, 36.9 FEET SOUTHEAST OF TRIANGULATION STATION HARFORD,
 JV0386'ABOUT 1 FOOT ABOVE THE LEVEL OF THE ROAD, AND SET IN THE TOP OF
 JV0386'A CONCRETE POST WHICH IS 2 INCHES BELOW THE LEVEL OF THE GROUND.
 JV0386
 JV0386                          STATION RECOVERY (1987)
 JV0386
 JV0386'RECOVERY NOTE BY US POWER SQUADRON 1987 (EMT)
 JV0386'RECOVERED IN GOOD CONDITION.
 JV0386
 JV0386                          STATION RECOVERY (2006)
 JV0386
 JV0386'RECOVERY NOTE BY US POWER SQUADRON 2006 (JM)
 JV0386'WITNESS POST, POWER POLE, PROPERTY OWNER REMAIN THE SAME. REGRADING
 JV0386'DONE WITHIN LAST YEAR, MARK LOST.
 JV0386
 JV0386                          STATION RECOVERY (2023)
 JV0386
 JV0386'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV0386'RECOVERED AS DESCRIBED.
 JV0386
 JV0386                          STATION RECOVERY (2023)
 JV0386
 JV0386'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 JV0386'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0384 ***********************************************************************
 JV0384  DESIGNATION -  HARFORD RM 2
 JV0384  PID         -  JV0384
 JV0384  STATE/COUNTY-  MD/HARFORD
 JV0384  COUNTRY     -  US
 JV0384  USGS QUAD   -  PERRYMAN (2016)
 JV0384
 JV0384                         *CURRENT SURVEY CONTROL
 JV0384  ______________________________________________________________________
 JV0384* NAD 83(1986) POSITION- 39 29 22.51   (N) 076 14 41.50   (W)   HD_HELD1
 JV0384* NAVD 88 ORTHO HEIGHT -    61.923 (meters)      203.16  (feet) ADJUSTED
 JV0384  ______________________________________________________________________
 JV0384  GEOID HEIGHT    -        -33.057 (meters)                     GEOID18
 JV0384  DYNAMIC HEIGHT  -         61.891 (meters)      203.05  (feet) COMP
 JV0384  MODELED GRAVITY -    980,115.4   (mgal)                       NAVD 88
 JV0384
 JV0384  VERT ORDER      -  FIRST     CLASS II
 JV0384
 JV0384.The horizontal coordinates were determined by differentially corrected
 JV0384.hand held GPS observations or other comparable positioning techniques
 JV0384.and have an estimated accuracy of +/- 3 meters.
 JV0384
 JV0384.The orthometric height was determined by differential leveling and
 JV0384.adjusted by the NATIONAL GEODETIC SURVEY
 JV0384.in June 1991.
 JV0384
 JV0384.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0384.GEOID18 height accuracy estimate available here.
 JV0384
 JV0384.Click photographs - Photos may exist for this station.
 JV0384
 JV0384.The dynamic height is computed by dividing the NAVD 88
 JV0384.geopotential number by the normal gravity value computed on the
 JV0384.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0384.degrees latitude (g = 980.6199 gals.).
 JV0384
 JV0384.The modeled gravity was interpolated from observed gravity values.
 JV0384
 JV0384;                    North         East    Units  Estimated Accuracy
 JV0384;SPC MD       -   202,627.4     464,961.5     MT  (+/- 3 meters HH1 GPS) 
 JV0384
 JV0384_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9295071848(NAD 83)
 JV0384
 JV0384                          SUPERSEDED SURVEY CONTROL
 JV0384
 JV0384  NGVD 29 (11/26/84)   62.168  (m)          203.96   (f) ADJUSTED    1 2
 JV0384
 JV0384.Superseded values are not recommended for survey control.
 JV0384
 JV0384.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0384.See file dsdata.pdf to determine how the superseded data were derived.
 JV0384
 JV0384_MARKER: DR = REFERENCE MARK DISK
 JV0384_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0384_STAMPING: HARFORD NO 2 1958
 JV0384_MARK LOGO: CGS
 JV0384_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0384+STABILITY: SURFACE MOTION
 JV0384
 JV0384  HISTORY     - Date     Condition        Report By
 JV0384  HISTORY     - 1958     MONUMENTED       CGS
 JV0384  HISTORY     - 1971     GOOD             NGS
 JV0384  HISTORY     - 1987     MARK NOT FOUND   USPSQD
 JV0384
 JV0384                          STATION DESCRIPTION
 JV0384
 JV0384'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0384'6 MI SW FROM ABERDEEN.
 JV0384'ABOUT 2.6 MILES SOUTHWEST ALONG U.S. HIGHWAY 40 FROM THE HIGH
 JV0384'SCHOOL AT ABERDEEN, THENCE 2.8 MILES WEST ALONG STATE HIGHWAY
 JV0384'7, THENCE 0.5 MILE NORTH ALONG BELCAMP ROAD, THENCE 0.1 MILE
 JV0384'SOUTHEAST ALONG A PAVED ROAD TO THE CREST OF A HILL, ALONG THE
 JV0384'NORTHEAST EDGE OF THE LAWN AROUND THE T.A. STANLEY RESIDENCE,
 JV0384'16 1/2 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 52 1/2
 JV0384'FEET SOUTHEAST OF THE CENTER LINE OF THE DRIVEWAY TO THE
 JV0384'HOUSE, 81.2 FEET NORTHEAST OF THE EAST CORNER OF THE BRICK
 JV0384'HOUSE, 38.7 FEET NORTHWEST OF TRIANGULATION STATION HARFORD,
 JV0384'ABOUT LEVEL WITH THE ROAD, AND SET IN THE TOP OF A CONCRETE
 JV0384'POST WHICH IS 2 INCHES BELOW THE SURFACE OF THE GROUND.
 JV0384
 JV0384                          STATION RECOVERY (1987)
 JV0384
 JV0384'RECOVERY NOTE BY US POWER SQUADRON 1987 (EMT)
 JV0384'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1502 ***********************************************************************
 HU1502  DESIGNATION -  HARMON MSFC 1908
 HU1502  PID         -  HU1502
 HU1502  STATE/COUNTY-  MD/WORCESTER
 HU1502  COUNTRY     -  US
 HU1502  USGS QUAD   -  OCEAN CITY (2016)
 HU1502
 HU1502                         *CURRENT SURVEY CONTROL
 HU1502  ______________________________________________________________________
 HU1502* NAD 83(1991) POSITION- 38 19 38.82835(N) 075 06 29.19989(W)   ADJUSTED
 HU1502* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU1502  ______________________________________________________________________
 HU1502  GEOID HEIGHT    -        -36.060 (meters)                     GEOID18
 HU1502  LAPLACE CORR    -         -0.64  (seconds)                    DEFLEC18
 HU1502  HORZ ORDER      -  THIRD
 HU1502
 HU1502.The horizontal coordinates were established by classical geodetic methods
 HU1502.and adjusted by the National Geodetic Survey in January 1992.
 HU1502
 HU1502.The orthometric height was scaled from a topographic map.
 HU1502
 HU1502.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1502.GEOID18 height accuracy estimate available here.
 HU1502
 HU1502.Click photographs - Photos may exist for this station.
 HU1502
 HU1502.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1502
 HU1502. The following values were computed from the NAD 83(1991) position.
 HU1502
 HU1502;                    North         East     Units Scale Factor Converg.
 HU1502;SPC MD       -    75,064.237   565,415.051   MT  0.99999534   +1 11 14.7
 HU1502;SPC MD       -   246,273.25  1,855,032.55   sFT  0.99999534   +1 11 14.7
 HU1502;UTM  18      - 4,242,153.079   490,550.496   MT  0.99960110   -0 04 01.4
 HU1502
 HU1502!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1502!SPC MD       -   1.00000538  x   0.99999534  =   1.00000072
 HU1502!UTM  18      -   1.00000538  x   0.99960110  =   0.99960648
 HU1502
 HU1502:                Primary Azimuth Mark                     Grid Az
 HU1502:SPC MD       -  BUFFING                                  192 05 49.9
 HU1502:UTM  18      -  BUFFING                                  193 21 06.0
 HU1502
 HU1502_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9055042153(NAD 83)
 HU1502
 HU1502|---------------------------------------------------------------------|
 HU1502| PID    Reference Object                     Distance      Geod. Az  |
 HU1502|                                                           dddmmss.s |
 HU1502| HU1517 OCEAN CITY WATER TANK               APPROX. 1.8 KM 0813950.5 |
 HU1502| HU1499 BUFFING                             APPROX. 1.2 KM 1931704.6 |
 HU1502|---------------------------------------------------------------------|
 HU1502
 HU1502                          SUPERSEDED SURVEY CONTROL
 HU1502
 HU1502  NAD 83(1986)-  38 19 38.81114(N)    075 06 29.22908(W) AD(       ) 3
 HU1502  NAD 27      -  38 19 38.40082(N)    075 06 30.56675(W) AD(       ) 3
 HU1502  USSD        -  38 19 38.58400(N)    075 06 30.34900(W) AD(       ) 3
 HU1502
 HU1502.Superseded values are not recommended for survey control.
 HU1502
 HU1502.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1502.See file dsdata.pdf to determine how the superseded data were derived.
 HU1502
 HU1502_MARKER: H = DRILL HOLE
 HU1502_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1502_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1502+STABILITY: SURFACE MOTION
 HU1502
 HU1502  HISTORY     - Date     Condition        Report By
 HU1502  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1502  HISTORY     - 1934     MARK NOT FOUND   CGS
 HU1502  HISTORY     - 1958     MARK NOT FOUND   CGS
 HU1502  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1502  HISTORY     - 1967     MARK NOT FOUND   LOCENG
 HU1502
 HU1502                          STATION DESCRIPTION
 HU1502
 HU1502'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1502'ON THE W SHORE OF SINEPUXENT BAY, ABOUT 3/4 MILE BACK FROM W END
 HU1502'OF RAILROAD BRIDGE AND JUST S OF THE BALTIMORE, CHESAPEAKE AND
 HU1502'ATLANTIC RAILWAY TRACKS, IN A FIELD, ABOUT 72 YARDS S OF THE E
 HU1502'AND W RAILWAY TRACKS AND ABOUT 65 YARDS S OF THE RAILWAY
 HU1502'FENCE.  IT IS ABOUT 170 YARDS E OF THE FIRST PINE WOODS FROM THE
 HU1502'BAY SHORE AND ABOUT 145 YARDS E OF SOME YOUNG GROWTH PINES
 HU1502'ADJACENT TO THE WOODS.  STATION IS MARKED BY CENTER OF STANDARD
 HU1502'CEMENT MONUMENT OF THE MARYLAND SHELL FISH SURVEY
 HU1502'WHICH IS MADE OF CONCRETE 2
 HU1502'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1502'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1502'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1502'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1502'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1502'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1502'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1502'THE LOCATION OF THE STATION.
 HU1502'STATION IS BURIED WITH ITS TOP 12 INCHES BELOW THE
 HU1502'SURFACE OF THE SAND.
 HU1502'
 HU1502'DISTANCES AND AZIMUTHS TO POINTS OF REFERENCE ARE AS
 HU1502'FOLLOWS--CORNER OF FENCE AND WOODS, 242 YARDS, S 42 DEG 30 MIN W.
 HU1502'CORNER OF RAILROAD FENCE AND WOODS, 138 YARDS, N 64 DEG 30 MIN W.
 HU1502'3 OR 4 SMALL TREES, 1/8 MILE, S 49 DEG 30 MIN E.  LEFT CLUMP OF TREES,
 HU1502'1/8 MILE, S 18 DEG 30 MI E. N NEAR CHIMNEY OF HARMONS HOUSE, 1/4 MILE,
 HU1502'N 6 DEG 22 MIN E.  RIGHT CHIMNEY OF TABORS HOUSE, 3/4 MILE, N 79 DEG
 HU1502'30 MIN E.  POWER-HOUSE CHIMNEY, 1 MILE, N 83 DEG 37 MIN E.  FLAGSTAFF
 HU1502'ON SQUARE ROOF OF ATLANTIC HOTEL, 1 MILE, N 84 DEG 54 MIN E.
 HU1502'CROPPERS ICE-PLANT STACKS, 1 MILE, S 82 DEG 53 MIN E.
 HU1502
 HU1502                          STATION RECOVERY (1934)
 HU1502
 HU1502'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1502'STATION NOT RECOVERED.  PREVIOUS DESCRIPTIONS CARRIED OUT AND
 HU1502'LARGE AREA WAS DUG OVER BUT STATION COULD NOT BE FOUND.  SEVERAL
 HU1502'OF THE POINTS OF REFERENCE COULD NOT BE FOUND AND SOME HAVE BEEN
 HU1502'DESTROYED.
 HU1502
 HU1502                          STATION RECOVERY (1958)
 HU1502
 HU1502'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1502'STATION WAS SEARCHED FOR BUT WAS NOT FOUND.
 HU1502
 HU1502                          STATION RECOVERY (1962)
 HU1502
 HU1502'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1502'STATION COULD BE FOUND IN 1934 AND 1958 OR BY THIS
 HU1502'PARTY.  RECOMMENDED THIS STATION BE LISTED AS LOST.
 HU1502
 HU1502                          STATION RECOVERY (1967)
 HU1502
 HU1502'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1967 (GEH)
 HU1502'RECOVERED BY MDDCBA.
 HU1502'
 HU1502'STATION DESTROYED.  THERE IS A LARGE CONCRETE BLOCK BUILDING ON
 HU1502'STATION SITE.  THE CONSTRUCTION OF THIS BUILDING HAS COMPLETELY
 HU1502'DESTROYED ANY POSSIBILITY OF RECOVERY OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7131 ***********************************************************************
 HV7131  DESIGNATION -  HARNESS
 HV7131  PID         -  HV7131
 HV7131  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7131  COUNTRY     -  US
 HV7131  USGS QUAD   -  SOUTH RIVER (2016)
 HV7131
 HV7131                         *CURRENT SURVEY CONTROL
 HV7131  ______________________________________________________________________
 HV7131* NAD 83(1991) POSITION- 38 55 55.64146(N) 076 30 56.82712(W)   ADJUSTED
 HV7131* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7131  ______________________________________________________________________
 HV7131  GEOID HEIGHT    -        -33.363 (meters)                     GEOID18
 HV7131  LAPLACE CORR    -         -3.90  (seconds)                    DEFLEC18
 HV7131  HORZ ORDER      -  THIRD
 HV7131
 HV7131.The horizontal coordinates were established by classical geodetic methods
 HV7131.and adjusted by the National Geodetic Survey in January 1992.
 HV7131
 HV7131.The orthometric height was scaled from a topographic map.
 HV7131
 HV7131.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7131.GEOID18 height accuracy estimate available here.
 HV7131
 HV7131.Click photographs - Photos may exist for this station.
 HV7131
 HV7131.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7131
 HV7131. The following values were computed from the NAD 83(1991) position.
 HV7131
 HV7131;                    North         East     Units Scale Factor Converg.
 HV7131;SPC MD       -   140,582.526   441,983.542   MT  0.99995033   +0 18 14.1
 HV7131;SPC MD       -   461,227.84  1,450,074.34   sFT  0.99995033   +0 18 14.1
 HV7131;UTM  18      - 4,310,336.438   368,616.919   MT  0.99981255   -0 57 09.6
 HV7131
 HV7131!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7131!SPC MD       -   1.00000512  x   0.99995033  =   0.99995545
 HV7131!UTM  18      -   1.00000512  x   0.99981255  =   0.99981767
 HV7131
 HV7131:                Primary Azimuth Mark                     Grid Az
 HV7131:SPC MD       -  HIPT                                     123 42 58.3
 HV7131:UTM  18      -  HIPT                                     124 58 22.0
 HV7131
 HV7131_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6861610336(NAD 83)
 HV7131
 HV7131|---------------------------------------------------------------------|
 HV7131| PID    Reference Object                     Distance      Geod. Az  |
 HV7131|                                                           dddmmss.s |
 HV7131| CX2851 HARNESS RM                            5.048 METERS 02536     |
 HV7131| HV7119 HIPT                                APPROX. 1.6 KM 1240112.4 |
 HV7131| HV7158 GLEBE CREEK RED ROOF HSE E CHY      APPROX. 1.8 KM 2845514.4 |
 HV7131| HV7112 ABERDEEN CREEK BOATHSE N GABLE      APPROX. 1.3 KM 3275325.0 |
 HV7131|---------------------------------------------------------------------|
 HV7131
 HV7131                          SUPERSEDED SURVEY CONTROL
 HV7131
 HV7131  NAD 83(1986)-  38 55 55.63797(N)    076 30 56.83849(W) AD(       ) 3
 HV7131  NAD 27      -  38 55 55.22200(N)    076 30 57.97200(W) AD(       ) 3
 HV7131
 HV7131.Superseded values are not recommended for survey control.
 HV7131
 HV7131.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7131.See file dsdata.pdf to determine how the superseded data were derived.
 HV7131
 HV7131_MARKER: DS = TRIANGULATION STATION DISK
 HV7131_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7131_STAMPING: HARNESS 1933
 HV7131_MARK LOGO: CGS
 HV7131_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7131+STABILITY: SURFACE MOTION
 HV7131
 HV7131  HISTORY     - Date     Condition        Report By
 HV7131  HISTORY     - 1933     MONUMENTED       CGS
 HV7131  HISTORY     - 1957     POOR             USGS
 HV7131
 HV7131                          STATION DESCRIPTION
 HV7131
 HV7131'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7131'ON THE NE SIDE OF SOUTH RIVER, ON PERSIMMON POINT AT THE ENTRANCE
 HV7131'TO HARNESS CREEK, AND ABOUT 3 MILES FROM THE MOUTH OF THE RIVER.
 HV7131'STATION IS ABOUT 100 FEET N OF THE EXTREME END OF SAND POINT,
 HV7131'ABOUT 40 FEET FROM HIGH WATER AND ABOUT 4 FEET ABOVE HIGH WATER.
 HV7131'STATION IS IN THE SAGE GRASS AT THE EDGE OF A THICKET.
 HV7131'
 HV7131'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7131'CONCRETE AS DESCRIBED.
 HV7131
 HV7131                          STATION RECOVERY (1957)
 HV7131
 HV7131'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV7131'STATION DISTURBED.  FOUND, BUT DUE TO EROSION OF THE BEACH, THE
 HV7131'STATION IS NOW IN THE SAND OF THE BEACH AND APPEARS TO BE TIPPED
 HV7131'AND SETTLED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7217 ***********************************************************************
 JV7217  DESIGNATION -  HARNEY
 JV7217  PID         -  JV7217
 JV7217  STATE/COUNTY-  MD/CARROLL
 JV7217  COUNTRY     -  US
 JV7217  USGS QUAD   -  TANEYTOWN (2016)
 JV7217
 JV7217                         *CURRENT SURVEY CONTROL
 JV7217  ______________________________________________________________________
 JV7217* NAD 83(2011) POSITION- 39 43 03.90237(N) 077 12 33.50781(W)   ADJUSTED
 JV7217* NAD 83(2011) ELLIP HT-   115.926 (meters)        (06/27/12)   ADJUSTED
 JV7217* NAD 83(2011) EPOCH   -  2010.00
 JV7217* NAVD 88 ORTHO HEIGHT -   149.2   (meters)      490.    (feet) GPS OBS
 JV7217  ______________________________________________________________________
 JV7217  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV7217  GEOID HEIGHT    -        -33.223 (meters)                     GEOID99
 JV7217  GEOID HEIGHT    -        -33.240 (meters)                     GEOID18
 JV7217  NAD 83(2011) X  -  1,087,663.274 (meters)                     COMP
 JV7217  NAD 83(2011) Y  - -4,790,970.151 (meters)                     COMP
 JV7217  NAD 83(2011) Z  -  4,054,003.303 (meters)                     COMP
 JV7217  LAPLACE CORR    -          3.75  (seconds)                    DEFLEC18
 JV7217
 JV7217  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7217  Standards:
 JV7217         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7217            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7217  -------------------------------------------------------------------
 JV7217  NETWORK    1.25   3.35           0.57   0.43   1.71      0.02499567
 JV7217  -------------------------------------------------------------------
 JV7217  Click here for local accuracies and other accuracy information.
 JV7217
 JV7217.The horizontal coordinates were established by GPS observations
 JV7217.and adjusted by the National Geodetic Survey in June 2012.
 JV7217
 JV7217.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7217.been affixed to the stable North American tectonic plate. See 
 JV7217.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7217
 JV7217.The horizontal coordinates are valid at the epoch date displayed above
 JV7217.which is a decimal equivalence of Year/Month/Day.
 JV7217
 JV7217.The orthometric height was determined by GPS observations and a
 JV7217.high-resolution geoid model.
 JV7217
 JV7217.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7217.GEOID18 height accuracy estimate available here.
 JV7217
 JV7217.Click photographs - Photos may exist for this station.
 JV7217
 JV7217.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7217
 JV7217.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7217
 JV7217.The ellipsoidal height was determined by GPS observations
 JV7217.and is referenced to NAD 83.
 JV7217
 JV7217. The following values were computed from the NAD 83(2011) position.
 JV7217
 JV7217;                    North         East     Units Scale Factor Converg.
 JV7217;SPC MD       -   227,712.496   382,052.012   MT  1.00005782   -0 07 52.9
 JV7217;SPC MD       -   747,086.75  1,253,448.98   sFT  1.00005782   -0 07 52.9
 JV7217;SPC PA S     -    42,825.935   646,362.935   MT  1.00004070   +0 21 02.9
 JV7217;SPC PA S     -   140,504.76  2,120,609.06   sFT  1.00004070   +0 21 02.9
 JV7217;UTM  18      - 4,398,764.715   310,631.293   MT  1.00004151   -1 24 43.8
 JV7217
 JV7217!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7217!SPC MD       -   0.99998181  x   1.00005782  =   1.00003963
 JV7217!SPC PA S     -   0.99998181  x   1.00004070  =   1.00002251
 JV7217!UTM  18      -   0.99998181  x   1.00004151  =   1.00002332
 JV7217
 JV7217_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1063198764(NAD 83)
 JV7217
 JV7217                          SUPERSEDED SURVEY CONTROL
 JV7217
 JV7217  NAD 83(2007)-  39 43 03.90243(N)    077 12 33.50917(W) AD(2002.00) 0
 JV7217  ELLIP H (02/10/07)  115.943  (m)                       GP(2002.00)    
 JV7217  ELLIP H (08/30/02)  115.920  (m)                       GP(       ) 4 2
 JV7217  NAD 83(1991)-  39 43 03.90183(N)    077 12 33.50937(W) AD(       ) 1
 JV7217  ELLIP H (02/09/94)  115.906  (m)                       GP(       ) 4 1
 JV7217  NAVD 88 (02/09/94)  149.2    (m)  GEOID93  model used  GPS OBS        
 JV7217
 JV7217.Superseded values are not recommended for survey control.
 JV7217
 JV7217.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7217.See file dsdata.pdf to determine how the superseded data were derived.
 JV7217
 JV7217_MARKER: DD = SURVEY DISK
 JV7217_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7217_STAMPING: HARNEY 1993
 JV7217_MARK LOGO: MD-021
 JV7217_PROJECTION: RECESSED 3 CENTIMETERS
 JV7217_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7217_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7217+STABILITY: SURFACE MOTION
 JV7217_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7217+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2020
 JV7217
 JV7217  HISTORY     - Date     Condition        Report By
 JV7217  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7217  HISTORY     - 19951127 GOOD             MCCRON
 JV7217  HISTORY     - 20021019 GOOD             NGS
 JV7217  HISTORY     - 20070419 GOOD             GEOCAC
 JV7217  HISTORY     - 20200630 GOOD             BASE9
 JV7217
 JV7217                          STATION DESCRIPTION
 JV7217
 JV7217'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7217'FROM THE INTERSECTION OF MD RTE 15 AND MD RTE 140 ON THE EAST SIDE OF
 JV7217'EMMITSBURG, MD, PROCEED EAST ALONG RTE 140 0.3 MILES (0.5 KM) TO THE
 JV7217'INTERSECTION OF RTE 140 AND HARNEY ROAD. TURN LEFT AND PROCEED NORTH
 JV7217'AND EAST ALONG HARNEY ROAD TO THE TOWN OF HARNEY (IN CARROLL COUNTY).
 JV7217'TURN LEFT AND CONTINUE NORTHERLY ON HARNEY ROAD 0.25 MILES (0.40 KM)
 JV7217'TO WHERE THE ROAD CURVES RIGHT (NORTH) AND THE STATION ON THE LEFT.
 JV7217'STATION IS NORTHWEST OF A GRAVEL DRIVE, 19 FEET (5.8 M) SOUTHWEST OF
 JV7217'THE CENTERLINE OF HARNEY ROAD AND 36 FEET (11.0 M) NORTH OF P.E.
 JV7217'SYSTEM POWER POLE NO. 122. STATION IS A BRASS DISK SET IN THE TOP OF
 JV7217'AN 8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7217
 JV7217                          STATION RECOVERY (1995)
 JV7217
 JV7217'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV7217'STATION IS LOCATED ABOUT 4.0 MI (6.4 KM) NORTHWEST OF TANEYTOWN NEAR
 JV7217'THE MARYLAND/PENNSYLVANIA STATE LINE. TO REACH STATION FROM THE
 JV7217'INTERSECTION MD ROUTE 15 AND MD ROUTE 140 ON THE EAST SIDE OF
 JV7217'EMMITSBURG MD, PROCEED EAST ALONG MD ROUTE 140 FOR 0.3 MI (0.5 KM) TO
 JV7217'THE INTERSECTION OF WITH HARNEY ROAD. TURN LEFT AND GO EAST ON HARNEY
 JV7217'ROAD TO THE TOWN OF HARNEY. TURN LEFT AND CONTINUE NORTHERLY ON HARNEY
 JV7217'ROAD FOR 0.25 MI (0.40 KM) TO A CURVE IN THE ROAD TO THE RIGHT AND THE
 JV7217'STATION TO THE LEFT. STATION MARK IS SET IN THE TOP OF AN 8 IN
 JV7217'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS NORTHWEST
 JV7217'OF A GRAVEL DRIVE, 19.0 FT (5.8 M) SOUTHWEST OF THE CENTERLINE OF THE
 JV7217'ROAD AND 36.0 FT (11.0 M) NORTHWEST OF POWER POLE NO.122.
 JV7217
 JV7217                          STATION RECOVERY (2002)
 JV7217
 JV7217'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (RWS)
 JV7217'RECOVERED IN GOOD CONDITION.
 JV7217
 JV7217                          STATION RECOVERY (2007)
 JV7217
 JV7217'RECOVERY NOTE BY GEOCACHING 2007 (DPB)
 JV7217'NO LONGER MARKED FOR SATELLITE RECOVERY.
 JV7217
 JV7217                          STATION RECOVERY (2020)
 JV7217
 JV7217'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2020 (DRD)
 JV7217'GRAVEL DRIVE NOTED IN 1993 LEADS TO HOUSE NUMBER 5150.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5119 ***********************************************************************
 JV5119  DESIGNATION -  HARP
 JV5119  PID         -  JV5119
 JV5119  STATE/COUNTY-  MD/KENT
 JV5119  COUNTRY     -  US
 JV5119  USGS QUAD   -  ROCK HALL (2016)
 JV5119
 JV5119                         *CURRENT SURVEY CONTROL
 JV5119  ______________________________________________________________________
 JV5119* NAD 83(1991) POSITION- 39 08 30.91711(N) 076 08 45.98760(W)   ADJUSTED
 JV5119* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5119  ______________________________________________________________________
 JV5119  GEOID HEIGHT    -        -33.448 (meters)                     GEOID18
 JV5119  LAPLACE CORR    -         -2.13  (seconds)                    DEFLEC18
 JV5119  HORZ ORDER      -  THIRD
 JV5119
 JV5119.The horizontal coordinates were established by classical geodetic methods
 JV5119.and adjusted by the National Geodetic Survey in January 1992.
 JV5119
 JV5119.The orthometric height was scaled from a topographic map.
 JV5119
 JV5119.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5119.GEOID18 height accuracy estimate available here.
 JV5119
 JV5119.Click photographs - Photos may exist for this station.
 JV5119
 JV5119.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5119
 JV5119. The following values were computed from the NAD 83(1991) position.
 JV5119
 JV5119;                    North         East     Units Scale Factor Converg.
 JV5119;SPC MD       -   164,106.419   473,817.641   MT  0.99996060   +0 32 09.4
 JV5119;SPC MD       -   538,405.81  1,554,516.71   sFT  0.99996060   +0 32 09.4
 JV5119;UTM  18      - 4,333,151.322   400,953.735   MT  0.99972079   -0 43 24.7
 JV5119
 JV5119!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5119!SPC MD       -   1.00000513  x   0.99996060  =   0.99996573
 JV5119!UTM  18      -   1.00000513  x   0.99972079  =   0.99972592
 JV5119
 JV5119:                Primary Azimuth Mark                     Grid Az
 JV5119:SPC MD       -  CLAY                                     312 43 31.1
 JV5119:UTM  18      -  CLAY                                     313 59 05.2
 JV5119
 JV5119_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0095333151(NAD 83)
 JV5119
 JV5119|---------------------------------------------------------------------|
 JV5119| PID    Reference Object                     Distance      Geod. Az  |
 JV5119|                                                           dddmmss.s |
 JV5119| JV5128 PHILIP                              321.668 METERS 03908     |
 JV5119| JV5120 WOLL                                347.906 METERS 17427     |
 JV5119| JV5125 CLAY                                APPROX. 0.7 KM 3131540.5 |
 JV5119|---------------------------------------------------------------------|
 JV5119
 JV5119                          SUPERSEDED SURVEY CONTROL
 JV5119
 JV5119  NAD 83(1986)-  39 08 30.91144(N)    076 08 45.99899(W) AD(       ) 3
 JV5119  NAD 27      -  39 08 30.52000(N)    076 08 47.17800(W) AD(       ) 3
 JV5119  USSD        -  39 08 30.92600(N)    076 08 46.99500(W) AD(       ) 3
 JV5119
 JV5119.Superseded values are not recommended for survey control.
 JV5119
 JV5119.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5119.See file dsdata.pdf to determine how the superseded data were derived.
 JV5119
 JV5119_MARKER: H = DRILL HOLE
 JV5119_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5119_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5119+STABILITY: SURFACE MOTION
 JV5119
 JV5119  HISTORY     - Date     Condition        Report By
 JV5119  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5119  HISTORY     - 1941     SEE DESCRIPTION  CGS
 JV5119  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5119
 JV5119                          STATION DESCRIPTION
 JV5119
 JV5119'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5119'STATION IS ON THE WESTERN SHORE OF EAST FORK OF LANGFORD CREEK,
 JV5119'ON POINT OPPOSITE ENTRANCE TO PHILIPS CREEK, AT SE END OF ROW
 JV5119'OF BUSHES ON MARSH POINT, ABOUT 1 FOOT ABOVE HIGH WATER, 20 YARDS
 JV5119'SW OF EDGE OF MARSH, 20 YARDS W OF EDGE OF MARSH, 24 YARDS NW OF
 JV5119'EDGE OF MARSH, AND 40 YARDS FROM TREE-FRINGED BANK.
 JV5119'
 JV5119'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5119'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5119'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5119'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5119'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5119'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5119'
 JV5119'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5119'FOLLOWS--E CHIMNEY OF BRICK HOUSE, 3/4 MILE, N 22 DEG 59 MIN W. S
 JV5119'PEAK OF LARGE BARN, 1 MILE, N 05 DEG 47 MIN E. CHIMNEY OF HOUSE,
 JV5119'2 MILES, N 30 DEG 14 MIN E. LARGE SQUARE CHIMNEY ON W END OF HOUSE,
 JV5119'3/4 MILE, S 59 DEG 27 MIN E. NE PEAK OF LONG BARN, 3/4 MILE, S 25
 JV5119'DEG 05 MIN E. CHIMNEY OF SMALL HOUSE, 3/4 MILE, S 22 DEG 33 MIN E.
 JV5119
 JV5119                          STATION RECOVERY (1941)
 JV5119
 JV5119'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5119'RECOVERED AS DESCRIBED.  ORIGINAL DESCRIPTION ADEQUATE.  TOP OF
 JV5119'STATION MARK BROKEN OFF BY ICE BUT UNMOVED.
 JV5119
 JV5119                          STATION RECOVERY (1961)
 JV5119
 JV5119'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5119'STATION NOT RECOVERED AFTER A CAREFUL SEARCH.  THE TOP OF THE
 JV5119'MONUMENT WAS REPORTED BROKEN OFF IN 1941.  STATION HAS PROBABLY
 JV5119'DISINTERGRATED BEYOND RECOGNITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5728 ***********************************************************************
 HV5728  DESIGNATION -  HARPER
 HV5728  PID         -  HV5728
 HV5728  STATE/COUNTY-  MD/TALBOT
 HV5728  COUNTRY     -  US
 HV5728  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5728
 HV5728                         *CURRENT SURVEY CONTROL
 HV5728  ______________________________________________________________________
 HV5728* NAD 83(1991) POSITION- 38 45 45.17201(N) 076 13 43.37898(W)   ADJUSTED
 HV5728* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5728  ______________________________________________________________________
 HV5728  GEOID HEIGHT    -        -34.367 (meters)                     GEOID18
 HV5728  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 HV5728  HORZ ORDER      -  THIRD
 HV5728
 HV5728.The horizontal coordinates were established by classical geodetic methods
 HV5728.and adjusted by the National Geodetic Survey in January 1992.
 HV5728
 HV5728.The orthometric height was scaled from a topographic map.
 HV5728
 HV5728.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5728.GEOID18 height accuracy estimate available here.
 HV5728
 HV5728.Click photographs - Photos may exist for this station.
 HV5728
 HV5728.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5728
 HV5728. The following values were computed from the NAD 83(1991) position.
 HV5728
 HV5728;                    North         East     Units Scale Factor Converg.
 HV5728;SPC MD       -   121,930.351   467,032.238   MT  0.99995179   +0 29 02.7
 HV5728;SPC MD       -   400,033.16  1,532,254.93   sFT  0.99995179   +0 29 02.7
 HV5728;UTM  18      - 4,291,143.525   393,246.804   MT  0.99974033   -0 46 09.7
 HV5728
 HV5728!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5728!SPC MD       -   1.00000527  x   0.99995179  =   0.99995706
 HV5728!UTM  18      -   1.00000527  x   0.99974033  =   0.99974560
 HV5728
 HV5728:                Primary Azimuth Mark                     Grid Az
 HV5728:SPC MD       -  TAFT                                     152 54 06.0
 HV5728:UTM  18      -  TAFT                                     154 09 18.4
 HV5728
 HV5728_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9324691143(NAD 83)
 HV5728
 HV5728|---------------------------------------------------------------------|
 HV5728| PID    Reference Object                     Distance      Geod. Az  |
 HV5728|                                                           dddmmss.s |
 HV5728| HV5731 ANSLEY                              APPROX. 0.5 KM 0261718.7 |
 HV5728| HV5650 TAFT                                APPROX. 0.9 KM 1532308.7 |
 HV5728| HV5664 THELMA                              312.183 METERS 25546     |
 HV5728| HV5733 ELMORE                              471.565 METERS 3513800.4 |
 HV5728|---------------------------------------------------------------------|
 HV5728
 HV5728                          SUPERSEDED SURVEY CONTROL
 HV5728
 HV5728  NAD 83(1986)-  38 45 45.16815(N)    076 13 43.39373(W) AD(       ) 3
 HV5728  NAD 27      -  38 45 44.75100(N)    076 13 44.59100(W) AD(       ) 3
 HV5728  USSD        -  38 45 45.12600(N)    076 13 44.41100(W) AD(       ) 3
 HV5728
 HV5728.Superseded values are not recommended for survey control.
 HV5728
 HV5728.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5728.See file dsdata.pdf to determine how the superseded data were derived.
 HV5728
 HV5728_MARKER: H = DRILL HOLE
 HV5728_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5728_PROJECTION: PROJECTING 8 CENTIMETERS
 HV5728_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5728
 HV5728  HISTORY     - Date     Condition        Report By
 HV5728  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5728  HISTORY     - 1940     GOOD             CGS
 HV5728  HISTORY     - 1961     GOOD             CGS
 HV5728  HISTORY     - 1973     GOOD             MDDNR
 HV5728  HISTORY     - 1975     GOOD             MDDNR
 HV5728
 HV5728                          STATION DESCRIPTION
 HV5728
 HV5728'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5728'ON THE EASTERN SHORE OF BACK CREEK (SAN DOMINGO CREEK), ON A
 HV5728'PROMINENT POINT OPPOSITE THE N END OF HAMBLETON ISLAND, AND ABOUT
 HV5728'1-1/2 MILES S OF ST. MICHAELS, IN THE NW CORNER OF YARD OF A
 HV5728'HOUSE, ABOUT 4 FEET ABOVE HIGH WATER, 13 YARDS S OF EDGE OF STONE
 HV5728'SEA WALL, AND 55 YARDS NW OF A HOUSE.  STATION IS MARKED BY A
 HV5728'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5728'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV5728'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5728'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE
 HV5728'CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES
 HV5728'BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS
 HV5728'POINTS OF REFERENCE ARE AS FOLLOWS--N CHIMNEY OF WILLEY HOUSE, 1/4
 HV5728'MILE, S 78 DEG 49 MIN W.  E CHIMNEY OF HOUSE, 2-1/2 MILES, N 67
 HV5728'DEG 25 MIN W.  S CHIMNEY OF HOUSE, 1/4 MILE, N 54 DEG 40 MIN W.  S
 HV5728'GABLE OF BARN, 1-1/4 MILES, N 2 DEG 25 MIN W.  NAIL IN 24-INCH
 HV5728'PECAN TREE, 20.29 METERS (66.6 FEET), N 54 DEG 38 MIN E.  NW
 HV5728'CORNER OF BEVERLY KITCHEN, 54 YARDS, S 47 DEG 18 MIN E.  NAIL IN
 HV5728'LEANING LOCUST TREE, 18.72 METERS (61.4 FEET), S 14 DEG 31 MIN E.
 HV5728
 HV5728                          STATION RECOVERY (1940)
 HV5728
 HV5728'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5728'STATION MARK RECOVERED IN GOOD CONDITION AND PROJECTS ABOUT 2
 HV5728'INCHES ABOVE SURFACE OF GROUND.  REFERENCE PECAN TREE STILL INTACT.
 HV5728'
 HV5728'STATION IS ON THE EASTERN SHORE OF BACK CREEK (SAN DOMINGO CREEK)
 HV5728'IN NW CORNER OF LAWN OF T.J. DILLON PROPERTY, 11.7 METERS S OF
 HV5728'STONE BULKHEAD, 14.0 METERS E OF A STONE BULKHEAD AND 24.0 METERS
 HV5728'SW OF A DOCK AND 55 YARDS NW OF HOUSE.
 HV5728
 HV5728                          STATION RECOVERY (1961)
 HV5728
 HV5728'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5728'STATION MARK RECOVERED IN GOOD CONDITION AS DESCRIBED IN THE 1940
 HV5728'RECOVERY NOTE OF L.W.S.  THAT DESCRIPTION IS ADEQUATE WITH THE
 HV5728'EXCEPTION THAT THE STATION IS 155.6 FT. NW OF THE NW CORNER OF THE
 HV5728'HOUSE INSTEAD OF 55 YARDS.
 HV5728
 HV5728                          STATION RECOVERY (1973)
 HV5728
 HV5728'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV5728'STATION RECOVERED AS DESCRIBED IN FAIR CONDITION WITH THE
 HV5728'FOLLOWING CHANGES--TOP OF MONUMENT CHIPPED AND BROKEN.  PROPERTY
 HV5728'NOW OWNED BY MR. JOHN SHAW.
 HV5728
 HV5728                          STATION RECOVERY (1975)
 HV5728
 HV5728'RECOVERY NOTE BY MD DEPT OF NAT RES 1975
 HV5728'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED.  TOP OF MONUMENT
 HV5728'CHIPPED AND CRACKED.  CENTER HOLE ALL RIGHT, HAS HUB TACK IN
 HV5728'CENTER.  STATION LOCATED 73.5 FEET SW OF INSHORE END OF PIER, 45.0
 HV5728'FEET SE OF POINT, 7.7 FEET NW OF 36 INCH BEECH TREE AND 62.5 FEET
 HV5728'NE OF WILLOW TREE.  MONUMENT EXPOSED 3 INCHES ABOVE LAWN.
 HV5728'
 HV5728'ST. MICHAELS WATER TANK 1934 V.G.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4893 ***********************************************************************
 JV4893  DESIGNATION -  HARPER
 JV4893  PID         -  JV4893
 JV4893  STATE/COUNTY-  MD/KENT
 JV4893  COUNTRY     -  US
 JV4893  USGS QUAD   -  BETTERTON (2017)
 JV4893
 JV4893                         *CURRENT SURVEY CONTROL
 JV4893  ______________________________________________________________________
 JV4893* NAD 83(1991) POSITION- 39 21 52.75414(N) 076 00 53.25201(W)   ADJUSTED
 JV4893* NAVD 88 ORTHO HEIGHT -    18.    (meters)       59.    (feet) SCALED
 JV4893  ______________________________________________________________________
 JV4893  GEOID HEIGHT    -        -33.376 (meters)                     GEOID18
 JV4893  LAPLACE CORR    -         -1.51  (seconds)                    DEFLEC18
 JV4893  HORZ ORDER      -  THIRD
 JV4893
 JV4893.The horizontal coordinates were established by classical geodetic methods
 JV4893.and adjusted by the National Geodetic Survey in January 1992.
 JV4893
 JV4893.The orthometric height was scaled from a topographic map.
 JV4893
 JV4893.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4893.GEOID18 height accuracy estimate available here.
 JV4893
 JV4893.Click photographs - Photos may exist for this station.
 JV4893
 JV4893.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4893
 JV4893. The following values were computed from the NAD 83(1991) position.
 JV4893
 JV4893;                    North         East     Units Scale Factor Converg.
 JV4893;SPC MD       -   188,946.473   484,902.385   MT  0.99998618   +0 37 06.1
 JV4893;SPC MD       -   619,901.89  1,590,883.91   sFT  0.99998618   +0 37 06.1
 JV4893;UTM  18      - 4,357,734.942   412,579.283   MT  0.99969409   -0 38 37.2
 JV4893
 JV4893!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4893!SPC MD       -   1.00000245  x   0.99998618  =   0.99998863
 JV4893!UTM  18      -   1.00000245  x   0.99969409  =   0.99969654
 JV4893
 JV4893:                Primary Azimuth Mark                     Grid Az
 JV4893:SPC MD       -  PRICE                                    281 35 28.4
 JV4893:UTM  18      -  PRICE                                    282 51 11.7
 JV4893
 JV4893_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1257957734(NAD 83)
 JV4893
 JV4893|---------------------------------------------------------------------|
 JV4893| PID    Reference Object                     Distance      Geod. Az  |
 JV4893|                                                           dddmmss.s |
 JV4893| JV4895 PRICE                               APPROX. 3.1 KM 2821234.5 |
 JV4893|---------------------------------------------------------------------|
 JV4893
 JV4893                          SUPERSEDED SURVEY CONTROL
 JV4893
 JV4893  NAD 83(1986)-  39 21 52.74652(N)    076 00 53.25913(W) AD(       ) 3
 JV4893  NAD 27      -  39 21 52.36300(N)    076 00 54.46200(W) AD(       ) 3
 JV4893  USSD        -  39 21 52.73100(N)    076 00 54.29800(W) AD(       ) 3
 JV4893
 JV4893.Superseded values are not recommended for survey control.
 JV4893
 JV4893.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4893.See file dsdata.pdf to determine how the superseded data were derived.
 JV4893
 JV4893_MARKER: Z = SEE DESCRIPTION
 JV4893_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4893
 JV4893  HISTORY     - Date     Condition        Report By
 JV4893  HISTORY     - 1898     MONUMENTED       CGS
 JV4893
 JV4893                          STATION DESCRIPTION
 JV4893
 JV4893'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JV4893'ON S SHORE OF SASSAFRAS RIVER, IN A CORNFIELD ON THE HIGHEST
 JV4893'POINT OF A BLUFF, 30 FEET FROM EDGE OF A BLUFF.  CHIMNEY OF HOUSE
 JV4893'NEAR THE STATION IS N 58 MIN 13 MIN W. STATION
 JV4893'MARKED BY TWO 6-INCH DRAIN TILES PLACED ONE ABOVE THE OTHER, THE
 JV4893'TOP OF THE UPPER PIPE BEING 6 INCHES BELOW SURFACE OF GROUND.
 JV4893'THE SURFACE MARK IS A 4-INCH PINE STAKE, ITS TOP EVEN WITH
 JV4893'SURFACE OF GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4715 ***********************************************************************
 AB4715  DESIGNATION -  HARPER
 AB4715  PID         -  AB4715
 AB4715  STATE/COUNTY-  MD/CARROLL
 AB4715  COUNTRY     -  US
 AB4715  USGS QUAD   -  WESTMINSTER (2016)
 AB4715
 AB4715                         *CURRENT SURVEY CONTROL
 AB4715  ______________________________________________________________________
 AB4715* NAD 83(2011) POSITION- 39 32 50.91196(N) 076 53 37.32604(W)   ADJUSTED
 AB4715* NAD 83(2011) ELLIP HT-   184.122 (meters)        (06/27/12)   ADJUSTED
 AB4715* NAD 83(2011) EPOCH   -  2010.00
 AB4715* NAVD 88 ORTHO HEIGHT -   216.2   (meters)      709.    (feet) GPS OBS
 AB4715  ______________________________________________________________________
 AB4715  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4715  GEOID HEIGHT    -        -32.117 (meters)                     GEOID99
 AB4715  GEOID HEIGHT    -        -32.103 (meters)                     GEOID18
 AB4715  NAD 83(2011) X  -  1,116,783.489 (meters)                     COMP
 AB4715  NAD 83(2011) Y  - -4,796,702.494 (meters)                     COMP
 AB4715  NAD 83(2011) Z  -  4,039,486.594 (meters)                     COMP
 AB4715  LAPLACE CORR    -          0.26  (seconds)                    DEFLEC18
 AB4715
 AB4715  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4715  Standards:
 AB4715         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4715            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4715  -------------------------------------------------------------------
 AB4715  NETWORK    1.53   5.90           0.61   0.64   3.01     -0.10861079
 AB4715  -------------------------------------------------------------------
 AB4715  Click here for local accuracies and other accuracy information.
 AB4715
 AB4715.The horizontal coordinates were established by GPS observations
 AB4715.and adjusted by the National Geodetic Survey in June 2012.
 AB4715
 AB4715.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4715.been affixed to the stable North American tectonic plate. See 
 AB4715.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4715
 AB4715.The horizontal coordinates are valid at the epoch date displayed above
 AB4715.which is a decimal equivalence of Year/Month/Day.
 AB4715
 AB4715.The orthometric height was determined by GPS observations and a
 AB4715.high-resolution geoid model.
 AB4715
 AB4715.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4715.GEOID18 height accuracy estimate available here.
 AB4715
 AB4715.Click photographs - Photos may exist for this station.
 AB4715
 AB4715.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4715
 AB4715.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4715
 AB4715.The ellipsoidal height was determined by GPS observations
 AB4715.and is referenced to NAD 83.
 AB4715
 AB4715. The following values were computed from the NAD 83(2011) position.
 AB4715
 AB4715;                    North         East     Units Scale Factor Converg.
 AB4715;SPC MD       -   208,791.298   409,137.026   MT  1.00001851   +0 04 00.2
 AB4715;SPC MD       -   685,009.45  1,342,310.39   sFT  1.00001851   +0 04 00.2
 AB4715;UTM  18      - 4,379,245.839   337,286.551   MT  0.99992597   -1 12 21.7
 AB4715
 AB4715!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4715!SPC MD       -   0.99997111  x   1.00001851  =   0.99998962
 AB4715!UTM  18      -   0.99997111  x   0.99992597  =   0.99989709
 AB4715
 AB4715_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3728679245(NAD 83)
 AB4715
 AB4715                          SUPERSEDED SURVEY CONTROL
 AB4715
 AB4715  NAD 83(2007)-  39 32 50.91221(N)    076 53 37.32680(W) AD(2002.00) 0
 AB4715  ELLIP H (02/10/07)  184.144  (m)                       GP(2002.00)    
 AB4715  ELLIP H (08/30/02)  184.135  (m)                       GP(       ) 4 2
 AB4715  NAD 83(1991)-  39 32 50.91175(N)    076 53 37.32720(W) AD(       ) 1
 AB4715  ELLIP H (07/03/96)  184.063  (m)                       GP(       ) 1 1
 AB4715  NAVD 88 (07/03/96)  216.2    (m)  GEOID93  model used  GPS OBS        
 AB4715
 AB4715.Superseded values are not recommended for survey control.
 AB4715
 AB4715.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4715.See file dsdata.pdf to determine how the superseded data were derived.
 AB4715
 AB4715_MARKER: DD = SURVEY DISK
 AB4715_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4715_STAMPING: HARPER 1995
 AB4715_MARK LOGO: MD-013
 AB4715_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4715_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4715+STABILITY: SURFACE MOTION
 AB4715_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4715+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4715
 AB4715  HISTORY     - Date     Condition        Report By
 AB4715  HISTORY     - 1995     MONUMENTED       MD-013
 AB4715
 AB4715                          STATION DESCRIPTION
 AB4715
 AB4715'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4715'STATION IS LOCATED ABOUT 6.0 MI (9.7 KM) SOUTHEAST OF WESTMINSTER AND
 AB4715'ABOUT 3.5 MI (5.6 KM) NORTH OF FINKSBURG. TO REACH STATION FROM THE
 AB4715'INTERSECTION OF MD ROUTE 140 (BALTIMORE BLVD) AND MD ROUTE 91 (GAMBER
 AB4715'ROAD) AT FINKSBURG GO WEST ON MD ROUTE 140 FOR 2.6 MI (4.2 KM) TO THE
 AB4715'INTERSECTION WITH SANDYMOUNT ROAD. TURN RIGHT ON SANDYMOUNT ROAD AND
 AB4715'GO NORTH FOR 1.7 MI (2.7 KM) TO THE INTERSECTION WITH PATAPSCO ROAD.
 AB4715'TURN RIGHT ON PATAPSCO ROAD AND GO NORTH FOR 0.45 MI (0.72 KM) TO THE
 AB4715'INTERSECTION WITH RIDGE ROAD. TURN LEFT ON RIDGE AND WEST FOR 0.5 MI
 AB4715'(0.8 KM) TO THE STATION ON THE STATION MARK IS SET IN THE TOP OF A 10
 AB4715'IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 27.0 FT
 AB4715'(8.2 M) NORTHEAST OF THE CENTERLINE OF THE ROAD, 82.6 FT (25.2 M)
 AB4715'NORTH OF POWER POLE NO.177024 AND 90.5 FT (27.6 M) SOUTHEAST OF
 AB4715'TELEPHONE POLE NO.26.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8869 ***********************************************************************
 HV8869  DESIGNATION -  HARRINGTON AZ MK 2
 HV8869  PID         -  HV8869
 HV8869  STATE/COUNTY-  MD/DORCHESTER
 HV8869  COUNTRY     -  US
 HV8869  USGS QUAD   -  CHURCH CREEK (2016)
 HV8869
 HV8869                         *CURRENT SURVEY CONTROL
 HV8869  ______________________________________________________________________
 HV8869* NAD 83(1991) POSITION- 38 30 29.07385(N) 076 13 03.11766(W)   ADJUSTED
 HV8869* NAVD 88 ORTHO HEIGHT -     1.2   (meters)        4.    (feet) VERTCON3
 HV8869  ______________________________________________________________________
 HV8869  GEOID HEIGHT    -        -34.817 (meters)                     GEOID18
 HV8869  LAPLACE CORR    -         -5.78  (seconds)                    DEFLEC18
 HV8869  HORZ ORDER      -  SECOND
 HV8869
 HV8869.The horizontal coordinates were established by classical geodetic methods
 HV8869.and adjusted by the National Geodetic Survey in January 1992.
 HV8869
 HV8869.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8869.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8869
 HV8869.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8869.GEOID18 height accuracy estimate available here.
 HV8869
 HV8869.Click photographs - Photos may exist for this station.
 HV8869
 HV8869.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8869
 HV8869. The following values were computed from the NAD 83(1991) position.
 HV8869
 HV8869;                    North         East     Units Scale Factor Converg.
 HV8869;SPC MD       -    93,692.275   468,246.305   MT  0.99997032   +0 29 28.0
 HV8869;SPC MD       -   307,388.74  1,536,238.09   sFT  0.99997032   +0 29 28.0
 HV8869;UTM  18      - 4,262,891.883   393,843.780   MT  0.99973878   -0 45 29.3
 HV8869
 HV8869!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8869!SPC MD       -   1.00000528  x   0.99997032  =   0.99997560
 HV8869!UTM  18      -   1.00000528  x   0.99973878  =   0.99974406
 HV8869
 HV8869_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9384362891(NAD 83)
 HV8869
 HV8869                          SUPERSEDED SURVEY CONTROL
 HV8869
 HV8869  NAD 83(1986)-  38 30 29.07129(N)    076 13 03.13352(W) AD(       ) 2
 HV8869  NGVD 29 (03/28/90)    1.4    (m)            5.     (f) VERT ANG       
 HV8869
 HV8869.Superseded values are not recommended for survey control.
 HV8869
 HV8869.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8869.See file dsdata.pdf to determine how the superseded data were derived.
 HV8869
 HV8869_MARKER: DZ = AZIMUTH MARK DISK
 HV8869_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV8869_SP_SET: IRREGULAR CONCRETE MASS
 HV8869_STAMPING: HARRINGTON 1934 NO 2 1981
 HV8869_MARK LOGO: NGS
 HV8869_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV8869_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8869_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8869+SATELLITE: SATELLITE OBSERVATIONS - January 21, 2006
 HV8869
 HV8869  HISTORY     - Date     Condition        Report By
 HV8869  HISTORY     - 1981     MONUMENTED       NGS
 HV8869  HISTORY     - 20060121 GOOD             USPSQD
 HV8869
 HV8869                          STATION DESCRIPTION
 HV8869
 HV8869'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 HV8869'THE MARK IS LOCATED ABOUT 14.1 KM (8.75 MI) WEST OF CAMBRIDGE, 6.9 KM
 HV8869'(4.30 MI) WEST OF CHURCH CREEK, 0.5 KM (0.30 MI) EAST OF MADISON AND
 HV8869'ON THE SOUTH SIDE OF STATE HIGHWAY 16.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8869'TO REACH THE MARK FROM THE POST OFFICE IN CHURCH CREEK, GO WEST ON
 HV8869'STATE HIGHWAY 16 FOR 6.9 KM (4.30 MI) TO THE MARK ON THE LEFT.
 HV8869'THE MARK IS SET FLUSH IN A DRILL HOLE IN THE SOUTHWEST EDGE OF A
 HV8869'MASSIVE CONCRETE SLAB WHICH HOUSES TWO 1.5 M (4.9 FT) CULVERTS.  IT IS
 HV8869'7.5 M (24.6 FT) SOUTH OF THE CENTER OF STATE HIGHWAY 16, 2.4 M
 HV8869'(7.9 FT) WEST OF THE CENTER OF THE MOST WESTERLY ONE OF THE TWO
 HV8869'CULVERTS, 0.7 M (2.3 FT) SOUTH OF THE SOUTH GUARD RAIL ALONG THE
 HV8869'HIGHWAY AND 0.3 M (1.0 FT) SOUTH OF THE TOP SLOPE OF THE SOUTHWEST
 HV8869'PART OF THE CONCRETE SLAB.
 HV8869
 HV8869                          STATION RECOVERY (2006)
 HV8869
 HV8869'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV8869'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6625 ***********************************************************************
 HV6625  DESIGNATION -  HARRINGTON MSFC 1910
 HV6625  PID         -  HV6625
 HV6625  STATE/COUNTY-  MD/DORCHESTER
 HV6625  COUNTRY     -  US
 HV6625  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV6625
 HV6625                         *CURRENT SURVEY CONTROL
 HV6625  ______________________________________________________________________
 HV6625* NAD 83(1991) POSITION- 38 28 33.97955(N) 076 17 31.69571(W)   ADJUSTED
 HV6625* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6625  ______________________________________________________________________
 HV6625  GEOID HEIGHT    -        -34.626 (meters)                     GEOID18
 HV6625  LAPLACE CORR    -         -5.20  (seconds)                    DEFLEC18
 HV6625  HORZ ORDER      -  THIRD
 HV6625
 HV6625.The horizontal coordinates were established by classical geodetic methods
 HV6625.and adjusted by the National Geodetic Survey in January 1992.
 HV6625
 HV6625.The orthometric height was scaled from a topographic map.
 HV6625
 HV6625.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6625.GEOID18 height accuracy estimate available here.
 HV6625
 HV6625.Click photographs - Photos may exist for this station.
 HV6625
 HV6625.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6625
 HV6625. The following values were computed from the NAD 83(1991) position.
 HV6625
 HV6625;                    North         East     Units Scale Factor Converg.
 HV6625;SPC MD       -    90,090.439   461,766.958   MT  0.99997403   +0 26 39.4
 HV6625;SPC MD       -   295,571.72  1,514,980.43   sFT  0.99997403   +0 26 39.4
 HV6625;UTM  18      - 4,259,432.888   387,288.948   MT  0.99975645   -0 48 14.5
 HV6625
 HV6625!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6625!SPC MD       -   1.00000547  x   0.99997403  =   0.99997950
 HV6625!UTM  18      -   1.00000547  x   0.99975645  =   0.99976192
 HV6625
 HV6625:                Primary Azimuth Mark                     Grid Az
 HV6625:SPC MD       -  WHITEWASH MSFC 1910                      022 26 15.8
 HV6625:UTM  18      -  WHITEWASH MSFC 1910                      023 41 09.7
 HV6625
 HV6625_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8728859432(NAD 83)
 HV6625
 HV6625|---------------------------------------------------------------------|
 HV6625| PID    Reference Object                     Distance      Geod. Az  |
 HV6625|                                                           dddmmss.s |
 HV6625| HV6629 WHITEWASH MSFC 1910                 APPROX. 1.4 KM 0225255.2 |
 HV6625| HV6624 STAPLEFORD 1901                      19.797 METERS 35324     |
 HV6625|---------------------------------------------------------------------|
 HV6625
 HV6625                          SUPERSEDED SURVEY CONTROL
 HV6625
 HV6625  NAD 83(1986)-  38 28 33.97776(N)    076 17 31.71149(W) AD(       ) 3
 HV6625  NAD 27      -  38 28 33.55600(N)    076 17 32.87100(W) AD(       ) 3
 HV6625  USSD        -  38 28 33.91700(N)    076 17 32.66500(W) AD(       ) 3
 HV6625
 HV6625.Superseded values are not recommended for survey control.
 HV6625
 HV6625.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6625.See file dsdata.pdf to determine how the superseded data were derived.
 HV6625
 HV6625_MARKER: H = DRILL HOLE
 HV6625_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6625_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6625+STABILITY: SURFACE MOTION
 HV6625
 HV6625  HISTORY     - Date     Condition        Report By
 HV6625  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6625  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6625
 HV6625                          STATION DESCRIPTION
 HV6625
 HV6625'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6625'ON THE WESTERN SHORE OF SLAUGHTER CREEK, ABOUT 3/8 MILE N OF
 HV6625'SLAUGHTER CREEK BRIDGE, ON MARSH POINT AT S SIDE OF ENTRANCE TO
 HV6625'A CREEK (CHAPEL COVE), ABOUT ON LEVEL WITH HIGH WATER, 20 YARDS
 HV6625'SW OF SHORE, 26 YARDS NW OF SHORE, 27 YARDS W OF EXTREME END
 HV6625'OF POINT, AND 300 YARDS SE OF A HOUSE.  STATION IS MARKED BY A
 HV6625'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6625'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV6625'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6625'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK
 HV6625'IS THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP
 HV6625'2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND
 HV6625'BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NEAR
 HV6625'GABLE OF HOUSE NEAREST W END OF SLAUGHTER CREEK BRIDGE, 1/2
 HV6625'MILE, S 12 DEG 19 MIN W.  TALLER STACK OF CANNING HOUSE AT
 HV6625'TAYLOR ISLAND, 1/2 MILE, S 24 DEG 19 MIN W.  LEFT CHIMNEY OF
 HV6625'HOUSE, 300 YARDS, N 54 DEG 38 MIN W.  CHIMNEY ON NEAR END OF
 HV6625'HOUSE, 3/4 MILE, N 47 DEG 45 MIN E.  SPINDLE ON CUPOLA OF
 HV6625'BARN, 3/8 MILE, N 83 DEG 22 MIN E.  NEAR PEAK OF BARN,
 HV6625'1/2 MILE, S 76 DEG 07 MIN E.  NEAR PEAK OF BARN, 3/8 MILE, S 41 DEG
 HV6625'21 MIN E.  NEAR PEAK OF OLD CANNING HOUSE, 1/2 MILES 32 DEG
 HV6625'19 MIN E.  CENTER OF DRAW OF SLAUGHTER CREEK BRIDGE, 3/8 MILE,
 HV6625'S 70 DEG 12 MIN E.
 HV6625
 HV6625                          STATION RECOVERY (1942)
 HV6625
 HV6625'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (LWS)
 HV6625'SEARCHED FOR, BUT NOT FOUND.  SEXTANT ANGLES SHOWED LOCATION
 HV6625'BUT NO MARK WAS FOUND.
 HV6625'
 HV6625'RECOMMENDED THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8870 ***********************************************************************
 HV8870  DESIGNATION -  HARRINGTON RESET
 HV8870  PID         -  HV8870
 HV8870  STATE/COUNTY-  MD/DORCHESTER
 HV8870  COUNTRY     -  US
 HV8870  USGS QUAD   -  CHURCH CREEK (2016)
 HV8870
 HV8870                         *CURRENT SURVEY CONTROL
 HV8870  ______________________________________________________________________
 HV8870* NAD 83(1991) POSITION- 38 30 24.47780(N) 076 13 20.11557(W)   ADJUSTED
 HV8870* NAD 83(1991) ELLIP HT-   -34.411 (meters)        (01/27/92)   ADJUSTED
 HV8870* NAVD 88 ORTHO HEIGHT -     0.67  (+/-2cm)        2.2   (feet) VERTCON3
 HV8870  ______________________________________________________________________
 HV8870  GEOID HEIGHT    -        -34.804 (meters)                     GEOID18
 HV8870  NAD 83(1991) X  -  1,190,203.081 (meters)                     COMP
 HV8870  NAD 83(1991) Y  - -4,853,776.643 (meters)                     COMP
 HV8870  NAD 83(1991) Z  -  3,949,598.634 (meters)                     COMP
 HV8870  LAPLACE CORR    -         -5.87  (seconds)                    DEFLEC18
 HV8870  HORZ ORDER      -  SECOND
 HV8870  VERT ORDER      -  THIRD ? (See Below)
 HV8870  ELLP ORDER      -  FOURTH    CLASS I
 HV8870
 HV8870.The horizontal coordinates were established by classical geodetic methods
 HV8870.and adjusted by the National Geodetic Survey in January 1992.
 HV8870
 HV8870.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8870.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8870
 HV8870.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8870.GEOID18 height accuracy estimate available here.
 HV8870
 HV8870.The vertical order pertains to the NGVD 29 superseded value.
 HV8870
 HV8870.Click photographs - Photos may exist for this station.
 HV8870
 HV8870.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8870
 HV8870.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8870
 HV8870.The ellipsoidal height was determined by GPS observations
 HV8870.and is referenced to NAD 83.
 HV8870
 HV8870. The following values were computed from the NAD 83(1991) position.
 HV8870
 HV8870;                    North         East     Units Scale Factor Converg.
 HV8870;SPC MD       -    93,547.046   467,835.704   MT  0.99997046   +0 29 17.3
 HV8870;SPC MD       -   306,912.27  1,534,890.97   sFT  0.99997046   +0 29 17.3
 HV8870;UTM  18      - 4,262,755.672   393,430.206   MT  0.99973986   -0 45 39.8
 HV8870
 HV8870!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8870!SPC MD       -   1.00000540  x   0.99997046  =   0.99997586
 HV8870!UTM  18      -   1.00000540  x   0.99973986  =   0.99974526
 HV8870
 HV8870:                Primary Azimuth Mark                     Grid Az
 HV8870:SPC MD       -  HARRINGTON RM 3 AZIMUTH                  250 45 30.9
 HV8870:UTM  18      -  HARRINGTON RM 3 AZIMUTH                  252 00 28.0
 HV8870
 HV8870_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9343062755(NAD 83)
 HV8870
 HV8870|---------------------------------------------------------------------|
 HV8870| PID    Reference Object                     Distance      Geod. Az  |
 HV8870|                                                           dddmmss.s |
 HV8870| HV7932 HARRINGTON RM 2                      37.694 METERS 06747     |
 HV8870| HV8869 HARRINGTON AZ MK 2                  435.541 METERS 0710034.3 |
 HV8870| CX2852 HARRINGTON RM 3 AZIMUTH                            2511448.2 |
 HV8870| HV0291 HARRINGTON RM 1                      46.378 METERS 34853     |
 HV8870| HV7933 HARRINGTON RM 4                      33.866 METERS 34943     |
 HV8870|---------------------------------------------------------------------|
 HV8870
 HV8870                          SUPERSEDED SURVEY CONTROL
 HV8870
 HV8870  NAD 83(1986)-  38 30 24.47562(N)    076 13 20.13157(W) AD(       ) 2
 HV8870  NAD 27      -  38 30 24.03900(N)    076 13 21.33300(W) AD(       ) 2
 HV8870  NGVD 29               0.90   (m)            3.0    (f) LEVELING    3  
 HV8870  NGVD 29               0.90   (m)            3.0    (f) LEVELING    3  
 HV8870
 HV8870.Superseded values are not recommended for survey control.
 HV8870
 HV8870.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8870.See file dsdata.pdf to determine how the superseded data were derived.
 HV8870
 HV8870_MARKER: DH = HORIZONTAL CONTROL DISK
 HV8870_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8870_STAMPING: HARRINGTON 1934 1985
 HV8870_MARK LOGO: NGS
 HV8870_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8870_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8870+STABILITY: SURFACE MOTION
 HV8870_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV8870+SATELLITE: SATELLITE OBSERVATIONS - January 21, 2006
 HV8870
 HV8870  HISTORY     - Date     Condition        Report By
 HV8870  HISTORY     - 1985     MONUMENTED       NGS
 HV8870  HISTORY     - 1986     GOOD             NGS
 HV8870  HISTORY     - 20060121 GOOD             USPSQD
 HV8870
 HV8870                          STATION DESCRIPTION
 HV8870
 HV8870'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
 HV8870'THE STATION SURFACE MARK WAS FOUND DAMAGED.  IT WAS REMOVED AND A NEW
 HV8870'SURFACE MARK SET DIRECTLY OVER THE OLD SUB-SURFACE DISK.  REFERENCE
 HV8870'MARKS TWO AND FOUR AND AZIMUTH MARK TWO WERE RECOVERED AND FOUND IN
 HV8870'GOOD CONDITION.
 HV8870'THE STATION IS LOCATED ABOUT 14.5 KM (9.00 MI) WEST OF CAMBRIDGE, 7.25
 HV8870'KM (4.50 MI) WEST OF CHURCH CREEK AND IN THE SMALL VILLAGE OF MADISON.
 HV8870'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV8870'ON STATE HIGHWAY 16 FOR 7.25 KM (4.50 MI) TO THE STATION ON THE LEFT.
 HV8870'THE STATION IS SET IN THE TOP OF A 12-INCH ROUND CONCRETE POST
 HV8870'RECESSED 0.10 M (0.3 FT) BELOW THE SURFACE.  IT IS 64.3 M (211.0 FT)
 HV8870'SOUTHWEST OF THE SOUTHWEST CORNER OF THE MADISON FIRE HOUSE, 23.2 M
 HV8870'(76.1 FT) SOUTH-SOUTHEAST OF THE CENTER OF STATE HIGHWAY 16, 9.0 M
 HV8870'(29.5 FT) SOUTHEAST OF A POWERLINE POLE NUMBERED 29070 98470 77, 8.6 M
 HV8870'(28.2 FT) SOUTHEAST OF A WITNESS POST AND 8.8 M (28.9 FT) WEST OF THE
 HV8870'CENTER OF A PRIVATE DRIVE LEADING SOUTH.
 HV8870
 HV8870                          STATION RECOVERY (1986)
 HV8870
 HV8870'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HV8870'STATION SURFACE MARK FOUND DAMAGED.  IT WAS REMOVED AND A NEW SURFACE
 HV8870'MARK SET DIRECTLY OVER THE OLD SUB-SURFACE DISK.  BOTH REFERENCE
 HV8870'MARKS AND THE AZIMUTH MARK WERE RECOVERED AND FOUND IN GOOD CONDITION
 HV8870'AS DESCRIBED IN THE MOST RECENT INFORMATION AVAILABLE.  THE ONLY
 HV8870'CHANGES WERE A SLIGHTLY SHORTER DISTANCE TO THE REFERENCE MARKS.
 HV8870'REFERENCE MARK TWO WAS FOUND TO BE 0.012 METERS (0.04 FT) SHORTER IN
 HV8870'DISTANCE AND REFERENCE MARK FOUR WAS FOUND TO BE 0.009 METERS
 HV8870'(0.02 FT) SHORTER.  THE REASON COULD NOT BE DETERMINED BUT THE NEW
 HV8870'DISTANCES WERE CHECKED AND FOUND TO BE CORRECT.
 HV8870'
 HV8870'THE STATION SURFACE MARK IS A STANDARD NGS STATION DISK STAMPED--
 HV8870'HARRINGTON 1934 1985--SET IN THE TOP OF A 30 CM (12 INCH) ROUND
 HV8870'CONCRETE POST WHICH IS 10 CM (4 INCHES) BELOW THE SURFACE.
 HV8870'
 HV8870'DISTANCE FROM RM 1 TO RM 2 IS 45.156 M (148.15 FT)
 HV8870'
 HV8870'REFERENCE MARK NO.1 IS LOCATED 152.16 FEET N OF THE STATION, 22
 HV8870'FEET N OF THE CENTER LINE OF THE PAVED ROAD, AND 21 PACES E OF
 HV8870'CONCRETE CULVERT.  MARK PROJECTS 7 INCHES.
 HV8870'
 HV8870'REFERENCE MARK NO.2 IS LOCATED 124.00 FEET E OF THE STATION, 4
 HV8870'PACES W OF THE E DRIVE OF HARRINGTONS HOUSE AND 40 PACES S OF THE
 HV8870'PAVED ROAD.  MARK PROJECTS 8 INCHES.
 HV8870'
 HV8870'REFERENCE MARK NO.3 (AZIMUTH MARK) IS LOCATED 0.5 MILE W OF THE
 HV8870'STATION, 7 PACES S OF THE CENTER LINE PAVED ROAD, 26 PACES E OF A
 HV8870'FARMHOUSE, 9 PACES E OF THE LANE LEADING TO THE HOUSE, AND 4 FEET
 HV8870'E OF A TELEPHONE POLE.  MARK PROJECTS 6 INCHES.  TO REACH FROM THE
 HV8870'STATION TAKE PAVEMENT W 0.5 MILE TO THE FIRST HOUSE ON THE LEFT.
 HV8870'
 HV8870'TO REACH FROM CAMBRIDGE, MARYLAND, GO S ON RACE STREET AND ON OUT
 HV8870'THE CHURCH CREEK ROAD 6.0 MILES TO CHRUCH CREEK POST OFFICE.  TAKE
 HV8870'RIGHT FORK AND FOLLOW PAVED ROAD 4.6 MILES TO MADISON POST OFFICE.
 HV8870'STATION IS LOCATED 0.1 MILE W OF THE POST OFFICE, OR THE FIRST
 HV8870'HOUSE ON THE LEFT AFTER LEAVING THE POST OFFICE.
 HV8870'
 HV8870'A 103-TOWER WAS USED AND CLEARED ALL LINES.
 HV8870
 HV8870                          STATION RECOVERY (2006)
 HV8870
 HV8870'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV8870'THIS MARK IS 1 FOOT UNDER GROUND IN A WATER SOAKED AREA.  THERE IS A
 HV8870'CASONITE WITNESS POST 1 FOOT EAST OF IT AND IT IS 3 FEET
 HV8870'FROM AN ELECTRIC POLE.  IT IS ACROSS FROM THE FIRE STATION.  THE POLE
 HV8870'MENTIONED IN THE DESCRIPTION HAS BEEN MOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0291 ***********************************************************************
 HV0291  DESIGNATION -  HARRINGTON RM 1
 HV0291  PID         -  HV0291
 HV0291  STATE/COUNTY-  MD/DORCHESTER
 HV0291  COUNTRY     -  US
 HV0291  USGS QUAD   -  CHURCH CREEK (2016)
 HV0291
 HV0291                         *CURRENT SURVEY CONTROL
 HV0291  ______________________________________________________________________
 HV0291* NAD 83(1986) POSITION- 38 30 25.95   (N) 076 13 20.49   (W)   HD_HELD1
 HV0291* NAVD 88 ORTHO HEIGHT -     0.194 (meters)        0.64  (feet) ADJUSTED
 HV0291  ______________________________________________________________________
 HV0291  GEOID HEIGHT    -        -34.803 (meters)                     GEOID18
 HV0291  DYNAMIC HEIGHT  -          0.193 (meters)        0.63  (feet) COMP
 HV0291  MODELED GRAVITY -    980,020.5   (mgal)                       NAVD 88
 HV0291
 HV0291  VERT ORDER      -  SECOND    CLASS 0
 HV0291
 HV0291.The horizontal coordinates were determined by differentially corrected
 HV0291.hand held GPS observations or other comparable positioning techniques
 HV0291.and have an estimated accuracy of +/- 3 meters.
 HV0291
 HV0291.The orthometric height was determined by differential leveling and
 HV0291.adjusted by the NATIONAL GEODETIC SURVEY
 HV0291.in June 1991.
 HV0291
 HV0291.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0291.GEOID18 height accuracy estimate available here.
 HV0291
 HV0291.Click photographs - Photos may exist for this station.
 HV0291
 HV0291.The dynamic height is computed by dividing the NAVD 88
 HV0291.geopotential number by the normal gravity value computed on the
 HV0291.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0291.degrees latitude (g = 980.6199 gals.).
 HV0291
 HV0291.The modeled gravity was interpolated from observed gravity values.
 HV0291
 HV0291;                    North         East    Units  Estimated Accuracy
 HV0291;SPC MD       -    93,592.4     467,826.2     MT  (+/- 3 meters HH1 GPS) 
 HV0291
 HV0291_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9342162801(NAD 83)
 HV0291
 HV0291                          SUPERSEDED SURVEY CONTROL
 HV0291
 HV0291  NGVD 29 (02/24/95)    0.426  (m)            1.40   (f) ADJUSTED    2 0
 HV0291  NGVD 29 (11/26/84)    0.428  (m)            1.40   (f) SUPERSEDED  2 0
 HV0291
 HV0291.Superseded values are not recommended for survey control.
 HV0291
 HV0291.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0291.See file dsdata.pdf to determine how the superseded data were derived.
 HV0291
 HV0291_MARKER: DR = REFERENCE MARK DISK
 HV0291_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0291_STAMPING: HARRINGTON NO 1 1934
 HV0291_MARK LOGO: CGS
 HV0291_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0291+STABILITY: SURFACE MOTION
 HV0291
 HV0291  HISTORY     - Date     Condition        Report By
 HV0291  HISTORY     - 1934     MONUMENTED       CGS
 HV0291  HISTORY     - 1942     GOOD             CGS
 HV0291  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0291  HISTORY     - 1981     MARK NOT FOUND   NGS
 HV0291
 HV0291                          STATION DESCRIPTION
 HV0291
 HV0291'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0291'AT MADISON.
 HV0291'THIS MARK IS ALONG HIGHWAY 16 ABOUT 300 FEET WEST OF THE POST
 HV0291'OFFICE AT MADISON, DORCHESTER COUNTY, OPPOSITE THE DIRT DRIVEWAY
 HV0291'TO THE HOUSE ON THE SOUTH SIDE OF THE ROAD, ON THE EDGE OF A
 HV0291'SMALL STREAM, ABOUT 18 FEET NORTH OF THE CENTER LINE OF THE
 HV0291'HIGHWAY, ABOUT 1 1/2 FEET SOUTH OF A STANDARD REFERENCE POST AND
 HV0291'IS A STANDARD REFERENCE DISK SET IN A CONCRETE POST.
 HV0291
 HV0291                          STATION RECOVERY (1971)
 HV0291
 HV0291'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0291'MARK NOT FOUND.
 HV0291
 HV0291                          STATION RECOVERY (1981)
 HV0291
 HV0291'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HV0291'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7932 ***********************************************************************
 HV7932  DESIGNATION -  HARRINGTON RM 2
 HV7932  PID         -  HV7932
 HV7932  STATE/COUNTY-  MD/DORCHESTER
 HV7932  COUNTRY     -  US
 HV7932  USGS QUAD   -  CHURCH CREEK (2016)
 HV7932
 HV7932                         *CURRENT SURVEY CONTROL
 HV7932  ______________________________________________________________________
 HV7932* NAD 83(1991) POSITION- 38 30 24.93987(N) 076 13 18.67526(W)   ADJUSTED
 HV7932* NAVD 88 ORTHO HEIGHT -     0.61  (+/-2cm)        2.0   (feet) VERTCON3
 HV7932  ______________________________________________________________________
 HV7932  GEOID HEIGHT    -        -34.805 (meters)                     GEOID18
 HV7932  LAPLACE CORR    -         -5.86  (seconds)                    DEFLEC18
 HV7932  HORZ ORDER      -  THIRD
 HV7932  VERT ORDER      -  THIRD (See Below)
 HV7932
 HV7932.The horizontal coordinates were established by classical geodetic methods
 HV7932.and adjusted by the National Geodetic Survey in January 1992.
 HV7932
 HV7932.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7932.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7932
 HV7932.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7932.GEOID18 height accuracy estimate available here.
 HV7932
 HV7932.The vertical order pertains to the NGVD 29 superseded value.
 HV7932
 HV7932.Click photographs - Photos may exist for this station.
 HV7932
 HV7932.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7932
 HV7932. The following values were computed from the NAD 83(1991) position.
 HV7932
 HV7932;                    North         East     Units Scale Factor Converg.
 HV7932;SPC MD       -    93,561.590   467,870.477   MT  0.99997045   +0 29 18.2
 HV7932;SPC MD       -   306,959.98  1,535,005.06   sFT  0.99997045   +0 29 18.2
 HV7932;UTM  18      - 4,262,769.451   393,465.280   MT  0.99973977   -0 45 38.9
 HV7932
 HV7932!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7932!SPC MD       -   1.00000537  x   0.99997045  =   0.99997582
 HV7932!UTM  18      -   1.00000537  x   0.99973977  =   0.99974513
 HV7932
 HV7932_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9346562769(NAD 83)
 HV7932
 HV7932                          SUPERSEDED SURVEY CONTROL
 HV7932
 HV7932  NAD 83(1986)-  38 30 24.93746(N)    076 13 18.69180(W) AD(       ) 3
 HV7932  NGVD 29 (??/??/??)    0.84   (m)            2.8    (f) RESET       3  
 HV7932  NGVD 29               0.84   (m)            2.8    (f) LEVELING    3  
 HV7932
 HV7932.Superseded values are not recommended for survey control.
 HV7932
 HV7932.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7932.See file dsdata.pdf to determine how the superseded data were derived.
 HV7932
 HV7932_MARKER: DR = REFERENCE MARK DISK
 HV7932_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7932_STAMPING: HARRINGTON 1934 NO 2
 HV7932_MARK LOGO: CGS
 HV7932_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7932+STABILITY: SURFACE MOTION
 HV7932_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV7932+SATELLITE: SATELLITE OBSERVATIONS - February 04, 2007
 HV7932
 HV7932  HISTORY     - Date     Condition        Report By
 HV7932  HISTORY     - 1934     MONUMENTED       CGS
 HV7932  HISTORY     - 1981     GOOD             NGS
 HV7932  HISTORY     - 19851107 GOOD             NGS
 HV7932  HISTORY     - 20060121 GOOD             USPSQD
 HV7932  HISTORY     - 20070204 GOOD             USPSQD
 HV7932
 HV7932                          STATION DESCRIPTION
 HV7932
 HV7932'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 HV7932'IN MADISON.
 HV7932'7.25 KM (4.5 MI) WEST ALONG STATE HIGHWAY 16 FROM THE POST OFFICE
 HV7932'IN CHURCH CREEK, JUST SOUTH OF THE MADISON FIRE HOUSE, 42.1 METERS
 HV7932'138.1 FT) EAST OF A POWERLINE NUMBER 29070 98470 77, 28.8 METERS
 HV7932'(94.5 FT) EAST OF THE CENTER OF A PRIVATE DRIVE LEADING SOUTH AND IN
 HV7932'A GRASS COVERED YARD, AND 17.9 METERS (58.6 FT) SOUTH OF THE CENTER
 HV7932'OF STATE HIGHWAY 16.
 HV7932
 HV7932                          STATION RECOVERY (1985)
 HV7932
 HV7932'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985
 HV7932'THE MARK IS LOCATED ABOUT 14.5 KM (9.00 MI) WEST OF CAMBRIDGE, 7.25 KM
 HV7932'(4.50 MI) WEST OF CHURCH CREEK AND IN THE SMALL VILLAGE OF MADISON.
 HV7932'OWNERSHIP--ROAD RIGHT-OF-WAY.
 HV7932'TO REACH THE MARK FROM THE POST OFFICE IN CHURCH CREEK, GO WESTERLY ON
 HV7932'STATE HIGHWAY 16 FOR 7.25 KM (4.50 MI) TO THE MARK ON THE LEFT.
 HV7932'THE MARK IS SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST
 HV7932'PROJECTING .05 M (0.2 FT) ABOVE THE SURFACE.  IT IS 42.1 M (138.1 FT)
 HV7932'EAST OF A POWERLINE POLE NUMBERED 29070 98470 77, 41.0 M (134.5 FT)
 HV7932'EAST OF A WITNESS POST, 28.8 M (94.5 FT) EAST OF THE CENTER OF A
 HV7932'PRIVATE DRIVE 17.9 M (58.7 FT) SOUTH OF THE CENTER OF STATE HIGHWAY 16
 HV7932'AND ABOUT 0.2 M (0.7 FT) HIGHER THAN STATION HARRINGTON 1934 1985.
 HV7932
 HV7932                          STATION RECOVERY (2006)
 HV7932
 HV7932'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV7932'THIS MARK IS DIRECTLY ACROSS FROM THE FIRE STATION NAME AND SIREN. THE
 HV7932'POLE MENTIONED HAS BEEN MOVED, DUE TO THE NEW STATION AND NEW ROAD. 30
 HV7932'FEET FROM THE CENTER OF THE ROAD.
 HV7932
 HV7932                          STATION RECOVERY (2007)
 HV7932
 HV7932'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HV7932'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7933 ***********************************************************************
 HV7933  DESIGNATION -  HARRINGTON RM 4
 HV7933  PID         -  HV7933
 HV7933  STATE/COUNTY-  MD/DORCHESTER
 HV7933  COUNTRY     -  US
 HV7933  USGS QUAD   -  CHURCH CREEK (2016)
 HV7933
 HV7933                         *CURRENT SURVEY CONTROL
 HV7933  ______________________________________________________________________
 HV7933* NAD 83(1991) POSITION- 38 30 25.55848(N) 076 13 20.36495(W)   ADJUSTED
 HV7933* NAVD 88 ORTHO HEIGHT -     1.05  (+/-2cm)        3.4   (feet) VERTCON3
 HV7933  ______________________________________________________________________
 HV7933  GEOID HEIGHT    -        -34.803 (meters)                     GEOID18
 HV7933  LAPLACE CORR    -         -5.86  (seconds)                    DEFLEC18
 HV7933  HORZ ORDER      -  THIRD
 HV7933  VERT ORDER      -  THIRD (See Below)
 HV7933
 HV7933.The horizontal coordinates were established by classical geodetic methods
 HV7933.and adjusted by the National Geodetic Survey in January 1992.
 HV7933
 HV7933.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7933.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7933
 HV7933.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7933.GEOID18 height accuracy estimate available here.
 HV7933
 HV7933.The vertical order pertains to the NGVD 29 superseded value.
 HV7933
 HV7933.Click photographs - Photos may exist for this station.
 HV7933
 HV7933.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7933
 HV7933. The following values were computed from the NAD 83(1991) position.
 HV7933
 HV7933;                    North         East     Units Scale Factor Converg.
 HV7933;SPC MD       -    93,580.315   467,829.378   MT  0.99997043   +0 29 17.1
 HV7933;SPC MD       -   307,021.42  1,534,870.22   sFT  0.99997043   +0 29 17.1
 HV7933;UTM  18      - 4,262,789.063   393,424.608   MT  0.99973987   -0 45 40.0
 HV7933
 HV7933!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7933!SPC MD       -   1.00000530  x   0.99997043  =   0.99997573
 HV7933!UTM  18      -   1.00000530  x   0.99973987  =   0.99974517
 HV7933
 HV7933_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9342462789(NAD 83)
 HV7933
 HV7933                          SUPERSEDED SURVEY CONTROL
 HV7933
 HV7933  NAD 83(1986)-  38 30 25.55644(N)    076 13 20.38095(W) AD(       ) 3
 HV7933  NGVD 29 (??/??/??)    1.28   (m)            4.2    (f) RESET       3  
 HV7933  NGVD 29               1.28   (m)            4.2    (f) LEVELING    3  
 HV7933
 HV7933.Superseded values are not recommended for survey control.
 HV7933
 HV7933.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7933.See file dsdata.pdf to determine how the superseded data were derived.
 HV7933
 HV7933_MARKER: DR = REFERENCE MARK DISK
 HV7933_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7933_STAMPING: HARRINGTON 1934 NO 4 1981
 HV7933_MARK LOGO: NGS
 HV7933_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV7933_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7933+STABILITY: SURFACE MOTION
 HV7933_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7933+SATELLITE: SATELLITE OBSERVATIONS - May 13, 2008
 HV7933
 HV7933  HISTORY     - Date     Condition        Report By
 HV7933  HISTORY     - 1981     MONUMENTED       NGS
 HV7933  HISTORY     - 20060121 MARK NOT FOUND   USPSQD
 HV7933  HISTORY     - 20080513 GOOD             USACE
 HV7933
 HV7933                          STATION DESCRIPTION
 HV7933
 HV7933'DESCRIBED BY NATIONAL GEODETIC SURVEY 1981
 HV7933'IN MADISON.
 HV7933'7.25 KM (4.5 MI) WEST ALONG STATE HIGHWAY 16 FROM THE POST OFFICE
 HV7933'IN CHURCH CREEK, JUST SOUTH OF THE MADISON FIRE STATION, 34.5 METERS
 HV7933'(113.2 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF THE MADISONFIRE
 HV7933'STATION HOUSE, 27.1 METERS (88.8 FT) NORTH-NORTHEAST OF A POWERLINE
 HV7933'POLE NUMBERED 29070 98470 77, 11.0 METERS (36.0 FT) NORTH OF THE
 HV7933'CENTER OF STATE HIGHWAY 16, AND 10.5 METERS (34.5 FT) EAST OF THE
 HV7933'CENTER OF MADISON CAN HOUSE ROAD AND ON THE NORTH SLOPE OF
 HV7933'A GRADE LEADING DOWN TO A DITCH.
 HV7933
 HV7933                          STATION RECOVERY (2006)
 HV7933
 HV7933'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV7933'THERE IS A TRIANGLE AND THE NUMBERS 7933 PAINTED ON THE NEW BLACK TOP
 HV7933'OF THE NEW ROAD,AT THE EXACT COORDINATES.THERE IS A NEW FIRE STATION,
 HV7933'AND THE POWER POLE MENTIONED HAS BEEN MOVED.
 HV7933
 HV7933                          STATION RECOVERY (2008)
 HV7933
 HV7933'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 2008 (HLC)
 HV7933'DESCRIBTION IS ADEQUATE
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7398 ***********************************************************************
 HV7398  DESIGNATION -  HARRIS
 HV7398  PID         -  HV7398
 HV7398  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7398  COUNTRY     -  US
 HV7398  USGS QUAD   -  BRANDYWINE (2016)
 HV7398
 HV7398                         *CURRENT SURVEY CONTROL
 HV7398  ______________________________________________________________________
 HV7398* NAD 83(1993) POSITION- 38 44 42.41303(N) 076 52 19.89323(W)   ADJUSTED
 HV7398* NAVD 88 ORTHO HEIGHT -    73.7   (meters)      242.    (feet) VERTCON3
 HV7398  ______________________________________________________________________
 HV7398  GEOID HEIGHT    -        -32.699 (meters)                     GEOID18
 HV7398  LAPLACE CORR    -         -5.55  (seconds)                    DEFLEC18
 HV7398  HORZ ORDER      -  FIRST
 HV7398
 HV7398.The horizontal coordinates were established by classical geodetic methods
 HV7398.and adjusted by the National Geodetic Survey in November 1994.
 HV7398
 HV7398.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7398.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7398
 HV7398.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7398.GEOID18 height accuracy estimate available here.
 HV7398
 HV7398.Click photographs - Photos may exist for this station.
 HV7398
 HV7398.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7398
 HV7398. The following values were computed from the NAD 83(1993) position.
 HV7398
 HV7398;                    North         East     Units Scale Factor Converg.
 HV7398;SPC MD       -   119,719.790   411,110.579   MT  0.99995244   +0 04 48.8
 HV7398;SPC MD       -   392,780.68  1,348,785.29   sFT  0.99995244   +0 04 48.8
 HV7398;UTM  18      - 4,290,156.314   337,297.196   MT  0.99992599   -1 10 19.1
 HV7398
 HV7398!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7398!SPC MD       -   0.99999357  x   0.99995244  =   0.99994601
 HV7398!UTM  18      -   0.99999357  x   0.99992599  =   0.99991956
 HV7398
 HV7398:                Primary Azimuth Mark                     Grid Az
 HV7398:SPC MD       -  HYDE                                     262 23 08.1
 HV7398:UTM  18      -  HYDE                                     263 38 16.0
 HV7398
 HV7398_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3729790156(NAD 83)
 HV7398
 HV7398|---------------------------------------------------------------------|
 HV7398| PID    Reference Object                     Distance      Geod. Az  |
 HV7398|                                                           dddmmss.s |
 HV7398| HV7507 CHELTENHAM NAVAL RAD TWR            APPROX. 1.5 KM 0582902.0 |
 HV7398| HV7389 CHELTENHAM NAVAL RAD STA W TK       APPROX. 1.5 KM 0680808.9 |
 HV7398| HV7390 CHELTENHAM NAVAL RAD STA E TK       APPROX. 1.7 KM 0713018.8 |
 HV7398| HV7386 CHELTENHAM ST FISH COMM MAST        APPROX. 4.5 KM 1000141.3 |
 HV7398| HV7381 CHELTENHAM REFORM SCHOOL TANK       APPROX. 3.0 KM 1103208.8 |
 HV7398| HV8909 HARRIS RM 1                          38.789 METERS 12748     |
 HV7398| HV8911 HARRIS RM 3                                        1440323.1 |
 HV7398| HV8910 HARRIS RM 2                          26.792 METERS 25742     |
 HV7398| HV7429 HYDE                                APPROX. 5.0 KM 2622756.9 |
 HV7398| HV7600 CLINTON WSSC TANK                   APPROX. 3.5 KM 3113727.9 |
 HV7398| HV7612 CAMP SPRINGS BETHANY CH SPIRE       APPROX. 7.3 KM 3144504.2 |
 HV7398| HV7601 ANDREWS AFB SOUTH TANK              APPROX. 5.8 KM 3383019.0 |
 HV7398|---------------------------------------------------------------------|
 HV7398
 HV7398                          SUPERSEDED SURVEY CONTROL
 HV7398
 HV7398  NAD 83(1991)-  38 44 42.41274(N)    076 52 19.89346(W) AD(       ) 1
 HV7398  NAD 83(1986)-  38 44 42.41094(N)    076 52 19.90753(W) AD(       ) 1
 HV7398  NAD 27      -  38 44 41.99776(N)    076 52 21.00913(W) AD(       ) 1
 HV7398  NGVD 29 (07/19/86)   73.9    (m)          242.     (f) VERT ANG       
 HV7398
 HV7398.Superseded values are not recommended for survey control.
 HV7398
 HV7398.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7398.See file dsdata.pdf to determine how the superseded data were derived.
 HV7398
 HV7398_MARKER: DS = TRIANGULATION STATION DISK
 HV7398_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7398_STAMPING: HARRIS 1970
 HV7398_MARK LOGO: CGS
 HV7398_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV7398_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7398+STABILITY: SURFACE MOTION
 HV7398
 HV7398  HISTORY     - Date     Condition        Report By
 HV7398  HISTORY     - 1970     MONUMENTED       NGS
 HV7398  HISTORY     - 1970     GOOD             NGS
 HV7398  HISTORY     - 19841018 GOOD             NGS
 HV7398
 HV7398                          STATION DESCRIPTION
 HV7398
 HV7398'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7398'THE STATION IS ABOUT 6 MILES NORTH OF THE PRINCE GEORGES-CHARLES
 HV7398'COUNTY LINE, 2 MILES SOUTHEAST OF CLINTON, 1 MILE SOUTHWEST OF THE
 HV7398'CHELTENHAM U.S. NAVAL RADIO STATION AND ON PROPERTY OWNED BY JAMES
 HV7398'H. HARRIS, 7712 SURRATTS ROAD, CLINTON MARYLAND, TELEPHONE NUMBER
 HV7398'868-3038.
 HV7398'
 HV7398'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 223 AND
 HV7398'STATE HIGHWAY 381 IN CLINTON, GO SOUTH ON STATE HIGHWAY 381,
 HV7398'BRANDYWINE ROAD, FOR 0.65 MILE TO A SIDE ROAD ON THE LEFT, SURRATTS
 HV7398'ROAD.  TURN LEFT AND GO SOUTHEASTERLY ON SURRATTS ROAD FOR 1.0
 HV7398'MILE TO STATE HIGHWAY 5.  CONTINUE AHEAD, EAST, CROSSING STATE
 HV7398'HIGHWAY 5, ON SURRATTS ROAD FOR 0.3 MILE TO A FORK.  TAKE THE RIGHT
 HV7398'FORK AND GO SOUTHERLY ON SURRATTS ROAD FOR 0.4 MILE TO A SIDE
 HV7398'ROAD RIGHT, MOORES LANE.  CONTINUE SOUTHERLY ON SURRATTS ROAD
 HV7398'FOR 0.05 MILE TO THE STATION ON THE LEFT IN THE LAWN OF THE
 HV7398'RESIDENCE AT 7712 SURRATTS ROAD.  TO REACH REFERENCE MARK 3
 HV7398'FROM THE STATION, CONTINUE SOUTHERLY ON SURRATTS ROAD FOR 0.15 MILE
 HV7398'TO THE MARK ON THE LEFT.
 HV7398'
 HV7398'THE STATION MARK IS A STANDARD DISK, STAMPED HARRIS 1970, SET IN THE
 HV7398'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS FLUSH
 HV7398'WITH THE GROUND SURFACE.  IT IS 115.0 FEET WEST-NORTHWEST OF A GATE
 HV7398'IN A STUCCO FENCE SURROUNDING A HOUSE, 89.0 FEET NORTHEAST OF THE
 HV7398'CENTERLINE OF SURRATTS ROAD AND 44.5 FEET SOUTHWEST OF THE
 HV7398'NORTHEAST CURVE IN A DRIVEWAY OF THE HOUSE.  THE UNDERGROUND
 HV7398'MARK IS 40 INCHES BELOW THE GROUND SURFACE.
 HV7398'
 HV7398'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED HARRIS NO 1 1970, SET IN
 HV7398'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV7398'FLUSH WITH THE GROUND SURFACE.  IT IS 74.0 FEET WEST-NORTHWEST OF
 HV7398'THE SOUTHEAST CURVE OF THE DRIVEWAY, 31.8 FEET WEST-SOUTHWEST OF THE
 HV7398'CENTERLINE OF THE DRIVEWAY, 4.3 FEET NORTHEAST OF A POWER LINE
 HV7398'POLE NUMBERED PEP 827492, AND ABOUT 1 FOOT LOWER IN ELEVATION THAN
 HV7398'THE STATION.
 HV7398'
 HV7398'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED HARRIS NO 2 1970, SET
 HV7398'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7398'IS FLUSH WITH THE GROUND SURFACE.  IT IS 34.5 FEET EAST-NORTHEAST
 HV7398'OF A POWER LINE POLE NUMBERED PEP 827491, 17.0 FEET NORTHEAST OF THE
 HV7398'CENTERLINE OF SURRATTS ROAD, 15.5 FEET SOUTHEAST OF THE
 HV7398'CENTERLINE OF THE DRIVEWAY AS IT INTERSECTS SURRATTS ROAD, AND
 HV7398'ABOUT 2 FEET LOWER IN ELEVATION THAN THE STATION.
 HV7398'
 HV7398'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED HARRIS NO 3 1970, SET
 HV7398'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 HV7398'2 INCHES BELOW THE GROUND.  IT IS 37.0 FEET NORTHEAST OF A POWER
 HV7398'LINE POLE NUMBERED PEP 827494, 16.5 FEET EAST OF THE CENTERLINE OF
 HV7398'SURRATTS ROAD AND 11.0 FEET WEST OF A BOARD FENCE.
 HV7398
 HV7398                          STATION RECOVERY (1970)
 HV7398
 HV7398'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 HV7398'RECOVERED IN GOOD CONDITION.
 HV7398
 HV7398                          STATION RECOVERY (1984)
 HV7398
 HV7398'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HV7398'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION.
 HV7398'IT WAS FOUND THAT THE MEASUREMENTS STATED IN THE 1970 DESCRIPTION FROM
 HV7398'THE STATION MARK TO REFERENCE MARKS ONE AND TWO WERE REVERSED.  AFTER
 HV7398'THE CORRECT DISTANCE TO THE REFERENCE MARKS WERE APPLIED IN ORDER, A
 HV7398'SHORTER DISTANCE OF 0.012 M (0.04 FT) WAS NOTED TO REFERENCE MARK ONE.
 HV7398'ALL OTHER DISTANCES AND DIRECTIONS TO THE REFERENCE MARKS WERE FOUND
 HV7398'TO BE WITHIN CLOSE AGREEMENT WITH THE MOST RECENT INFORMATION
 HV7398'AVAILABLE.
 HV7398'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HV7398'THE STATION IS LOCATED ABOUT 9.65 KM (6.00 MI) NORTH OF THE PRINCE
 HV7398'GEORGES-CHARLES COUNTY LINE, 3.25 KM (2.00 MI) SOUTHEAST OF CLINTON
 HV7398'AND 1.6 KM (1.00 MI) SOUTHWEST OF THE CHELTHAM U.S. NAVY RADIO
 HV7398'STATION.  OWNERSHIP--JAMES H. HARRIS, 7712 SURRATTS ROAD, CLINTON,
 HV7398'MARYLAND.
 HV7398'TO REACH FROM THE POST OFFICE IN CLINTON, GO EAST ON STATE HIGHWAY 223
 HV7398'FOR 1.45 KM (0.90 MI) TO A CROSSROADS.  TURN RIGHT AND GO SOUTHERLY ON
 HV7398'STATE HIGHWAY 5 FOR 2.1 KM (1.30 MI) TO A CROSSROADS.  TURN LEFT AND
 HV7398'GO SOUTHEAST ON SURRATTS ROAD FOR 1.05 KM (0.65 MI) TO MOORES LANE ON
 HV7398'THE RIGHT.  CONTINUE SOUTHEAST ON SURRATTS ROAD FOR 0.1 KM (0.05 MI)
 HV7398'TO THE STATION ON THE LEFT IN THE FRONT YARD OF A ONE STORY STUCCO
 HV7398'HOUSE.
 HV7398'THE STATION DISK IS SET IN THE TOP OF A 0.3 M (1.0 FT) ROUND CONCRETE
 HV7398'MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 36.7 M
 HV7398'(120.4 FT) WEST OF THE NORTHWEST CORNER OF THE STUCCO HOUSE, 26.88 M
 HV7398'(88.2 FT) NORTHEAST OF THE CENTER OF SURRATTS ROAD, 36.88 M
 HV7398'(121.0 FT) EAST OF A POWERLINE POLE NUMBERED 836332 270, 11.34 M
 HV7398'(37.2 FT) SOUTH OF A 24-INCH OAK TREE WITH A LARGE BLAZE AND 14.2 M
 HV7398'(46.6 FT) SOUTHWEST OF THE CENTER OF A CIRCULAR DRIVE FOR THE STUCCO
 HV7398'HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4888 ***********************************************************************
 JV4888  DESIGNATION -  HARRIS
 JV4888  PID         -  JV4888
 JV4888  STATE/COUNTY-  MD/KENT
 JV4888  COUNTRY     -  US
 JV4888  USGS QUAD   -  BETTERTON (2017)
 JV4888
 JV4888                         *CURRENT SURVEY CONTROL
 JV4888  ______________________________________________________________________
 JV4888* NAD 83(1991) POSITION- 39 22 14.30528(N) 076 06 27.32658(W)   ADJUSTED
 JV4888* NAVD 88 ORTHO HEIGHT -    21.8   (meters)       72.    (feet) VERTCON3
 JV4888  ______________________________________________________________________
 JV4888  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 JV4888  LAPLACE CORR    -         -0.67  (seconds)                    DEFLEC18
 JV4888  HORZ ORDER      -  FIRST
 JV4888
 JV4888.The horizontal coordinates were established by classical geodetic methods
 JV4888.and adjusted by the National Geodetic Survey in January 1992.
 JV4888
 JV4888.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4888.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4888
 JV4888.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4888.GEOID18 height accuracy estimate available here.
 JV4888
 JV4888.Click photographs - Photos may exist for this station.
 JV4888
 JV4888.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4888
 JV4888. The following values were computed from the NAD 83(1991) position.
 JV4888
 JV4888;                    North         East     Units Scale Factor Converg.
 JV4888;SPC MD       -   189,528.818   476,899.048   MT  0.99998708   +0 33 36.4
 JV4888;SPC MD       -   621,812.46  1,564,626.29   sFT  0.99998708   +0 33 36.4
 JV4888;UTM  18      - 4,358,493.252   404,592.984   MT  0.99971207   -0 42 09.5
 JV4888
 JV4888!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4888!SPC MD       -   1.00000182  x   0.99998708  =   0.99998890
 JV4888!UTM  18      -   1.00000182  x   0.99971207  =   0.99971389
 JV4888
 JV4888:                Primary Azimuth Mark                     Grid Az
 JV4888:SPC MD       -  OSBORNES RUIN 4                          304 41 13.3
 JV4888:UTM  18      -  OSBORNES RUIN 4                          305 56 59.2
 JV4888
 JV4888_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0459258493(NAD 83)
 JV4888
 JV4888|---------------------------------------------------------------------|
 JV4888| PID    Reference Object                     Distance      Geod. Az  |
 JV4888|                                                           dddmmss.s |
 JV4888| CA9498 HARRIS RM 1 AZIMUTH                                0721205.1 |
 JV4888| JV4899 HARRIS AZ MK RESET                  169.589 METERS 07719     |
 JV4888| CA9544 HOWELL POINT TOWER 5 RM              32.943 METERS 07747     |
 JV4888| JV4889 HOWELL POINT TOWER 5                 11.085 METERS 08342     |
 JV4888| JV4898 BETTERTON MUN TANK                  APPROX. 4.0 KM 0963704.4 |
 JV4888| CA9500 HARRIS RM 4                          19.926 METERS 12002     |
 JV4888| CA9499 HARRIS RM 3                          24.867 METERS 24317     |
 JV4888| JV5304 AIRWAY BEACON 61 B                  APPROX.13.9 KM 2802539.2 |
 JV4888| JV4897 HOWELL POINT LIGHTHOUSE             309.639 METERS 28703     |
 JV4888| JV0393 OSBORNES RUIN 4                     APPROX.18.3 KM 3051449.7 |
 JV4888| JV4932 BELCAMP BATA SHOE WATER TANK        APPROX.15.5 KM 3140204.3 |
 JV4888| JV4944 AIRWAY BEACON 62 A                  APPROX.13.5 KM 3404358.9 |
 JV4888| JV4943 SWAN MEADOW WATER TANK              APPROX.15.0 KM 3422804.7 |
 JV4888| JV4946 ABERDEEN PROVING GROUNDS TANK       APPROX.12.7 KM 3505927.6 |
 JV4888| JV4861 AIRWAY BEACON FLASHING RED          APPROX.11.8 KM 3531826.8 |
 JV4888| JV4874 A TOWER                             APPROX.11.2 KM 3571551.4 |
 JV4888|---------------------------------------------------------------------|
 JV4888
 JV4888                          SUPERSEDED SURVEY CONTROL
 JV4888
 JV4888  NAD 83(1986)-  39 22 14.29824(N)    076 06 27.33327(W) AD(       ) 1
 JV4888  NAD 27      -  39 22 13.90590(N)    076 06 28.51910(W) AD(       ) 1
 JV4888  NGVD 29 (07/19/86)   22.0    (m)           72.     (f) VERT ANG       
 JV4888
 JV4888.Superseded values are not recommended for survey control.
 JV4888
 JV4888.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4888.See file dsdata.pdf to determine how the superseded data were derived.
 JV4888
 JV4888_MARKER: DS = TRIANGULATION STATION DISK
 JV4888_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4888_STAMPING: HARRIS 1933
 JV4888_MARK LOGO: CGS
 JV4888_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV4888_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4888+STABILITY: SURFACE MOTION
 JV4888
 JV4888  HISTORY     - Date     Condition        Report By
 JV4888  HISTORY     - 1933     MONUMENTED       CGS
 JV4888  HISTORY     - 1939     GOOD             CGS
 JV4888  HISTORY     - 1949     GOOD             CGS
 JV4888  HISTORY     - 1954     MARK NOT FOUND   CGS
 JV4888  HISTORY     - 1962     GOOD             CGS
 JV4888  HISTORY     - 1973     GOOD             NGS
 JV4888  HISTORY     - 19960928 GOOD             USPSQD
 JV4888  HISTORY     - 19990216 GOOD             GEOMET
 JV4888
 JV4888                          STATION DESCRIPTION
 JV4888
 JV4888'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV4888'STATION IS 36.35 FEET S OF THE TRIANGULATION STATION HOWELLS
 JV4888'POINT TOWER NO.5, 1918.
 JV4888'
 JV4888'SURFACE, UNDERGROUND, AND REFERENCE MARKS NOS.1, AND 3, ARE
 JV4888'STANDARD BRONZE DISKS SET IN CONCRETE.
 JV4888'
 JV4888'REFERENCE MARK NOT NUMBERED, HOWELLS POINT TOWER NO.5, 1918,
 JV4888'IS 108.10 FEET N OF STATION HARRIS.
 JV4888'
 JV4888'REFERENCE MARK NO.3 1933 IS S OF THE STATION, 15 FEET E OF
 JV4888'THE EDGE OF THE BLUFF ON THE W SIDE OF THE ORCHARD.
 JV4888'
 JV4888'REFERENCE MARK NO.1 IS 0.25 MILE NNW OF THE STATION, 16 FEET
 JV4888'OF THE NW CORNER OF THE PEAR ORCHARD.
 JV4888'
 JV4888'TO REACH STATION FROM KENNEDYVILLE WHICH IS ON U.S. HIGHWAY
 JV4888'213, ROUTE TO CHESTERTOWN, GO S FROM KENNEDYVILLE FOR 1.5 MILES
 JV4888'TO T-ROAD JUNCTION TO THE RIGHT AND SIGN BETTERTON 7 MILES.  TURN
 JV4888'RIGHT HERE AND GO THROUGH STILL POND AT 3.9 MILES, CONTINUE
 JV4888'FOR 3.8 MILES TO BETTERTON.  AFTER REACHING BETTERTON GO TO THE
 JV4888'WATER FRONT, TURN LEFT, GO 0.7 MILE TO GRAVEL ROAD AND TURN
 JV4888'RIGHT, GO 0.8 MILE, TURN RIGHT AND GO 1.0 MILE, TURN RIGHT TO THE
 JV4888'HOME OF MRS. EVYLIN HARRIS.  GO ON THROUGH PEAR ORCHARD FOR
 JV4888'0.6 MILE TO THE ARMY TOWER AND THE STATION.
 JV4888
 JV4888                          STATION RECOVERY (1939)
 JV4888
 JV4888'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4888'STATION MARK, REFERENCE MARK NO.3, HOWELLS POINT TOWER NO.5,
 JV4888'1918, AND REFERENCE MARK HOWELLS POINT TOWER NO.5, 1918 WERE
 JV4888'RECOVERED IN GOOD CONDITION.
 JV4888'
 JV4888'STATION IS LOCATED 2-1/2 MILES W OF BETTERTON, MARYLAND, ON
 JV4888'E SIDE OF CHESAPEAKE BAY, S OF THE MOUTH OF THE SASSAFRAS RIVER
 JV4888'ON TOP OF THE 60-FOOT BLUFF AT HOWELLS POINT.
 JV4888'
 JV4888'STATION MARK IS 6 METERS E OF THE EDGE OF THE BLUFF, 11 METERS
 JV4888'SW OF THE CENTER OF 40-FOOT WOODEN ARMY OBSERVATION TOWER IN A
 JV4888'GRASS AND BRIAR COVERED PART OF THE ARMY RESERVATION.  THE MARK
 JV4888'IS A STANDARD TRIANGULATION MARK SET FLUSH WITH THE SURFACE OF
 JV4888'THE GROUND.
 JV4888'
 JV4888'REFERENCE MARK NO.1, THE AZIMUTH MARK, WAS NOT VISITED.
 JV4888'
 JV4888'HOWELLS POINT BEACON HAS BEEN REMOVED TO A WOODEN STRUCTURE
 JV4888'AND ACCORDING TO THE LIGHTHOUSE DEPARTMENT INSPECTOR IN BALTIMORE,
 JV4888'IT WILL BE MOVED AGAIN TO A HIGHER STEEL STRUCTURE.
 JV4888'
 JV4888'REFERENCE MARK NO.3 IS 79.75 FEET SW OF THE STATION MARK AND
 JV4888'15 FEET E OF THE EDGE OF THE BLUFF.  IT IS A STANDARD REFERENCE
 JV4888'MARK PROJECTING 4 INCHES ABOVE GROUND.
 JV4888'
 JV4888'HOWELLS POINT TOWER NO.5, 1918 IS A STANDARD TRIANGULATION
 JV4888'MARK SET UNDER THE CENTER OF THE 40-FOOT OBSERVATION TOWER.  IT
 JV4888'IS FLUSH WITH THE SURFACE OF THE GROUND AND IS 36.37 FEET NE OF
 JV4888'THE STATION, HARRIS, 1933.
 JV4888'
 JV4888'REFERENCE MARK HOWELLS POINT TOWER NO.5, 1918 IS 10 METERS
 JV4888'N OF THE NORTHERLY OF TWO SMALL HOUSES AND 72 FEET NE OF THE
 JV4888'CENTER OF THE OBSERVATION TOWER.
 JV4888'
 JV4888'TO REACH THE STATION FROM BETTERTON, MARYLAND, FOLLOW THE
 JV4888'PAVED ROAD S FROM THE WHARF 0.6 MILE.  TURN RIGHT FOR 1.0
 JV4888'MILE.  TURN RIGHT AND FOLLOW ROAD AROUND TO THE LEFT FOR 1.0
 JV4888'MILE TO HOUSE AND BARN.  FOLLOW LANE BETWEEN HOUSE AND BARN, ALONG
 JV4888'S SIDE OF FIELD AND THROUGH PEAR ORCHARD TO ARMY OBSERVATION
 JV4888'TOWER AND THE STATION.
 JV4888
 JV4888                          STATION RECOVERY (1949)
 JV4888
 JV4888'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1949 (CAS)
 JV4888'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WITH THE EXCEPTION
 JV4888'OF REFERENCE MARK NO. 1 WHICH WAS NOT VISITED AT THIS TIME WERE
 JV4888'FOUND IN GOOD CONDITION.  THE DISTANCE TO ALL MARKS CHECKED.  THE
 JV4888'DIRECTION TO ALL MARKS WITH THE EXCEPTION OF HOWELL POINT TOWER
 JV4888'NO 5 1918 CHECKED.  THIS MARK CHECKED WITH THE 1939 DESCRIPTION.
 JV4888
 JV4888                          STATION RECOVERY (1954)
 JV4888
 JV4888'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (WVP)
 JV4888'THE STATION MARK WAS NOT RECOVERED ALTHOUGH A CONCLUSIVE SEARCH
 JV4888'WAS NOT MADE.  PART OF THE AREA HAS BEEN CLEARED AND LEVELED
 JV4888'AND THE STATION MARK COULD HAVE BEEN REMOVED TO PERMIT PLOWING
 JV4888'IN THE GARDEN SOUTH OF THE TOWER.
 JV4888'
 JV4888'THE ORIGINAL DESCRIPTION SHOWS THE REFERENCE NO. 3 PROJECTING ABOUT
 JV4888'4 INCHES.  THE MARK NOW PROJECTS ABOUT 10 INCHES AND IS TILTED
 JV4888'TO THE SOUTHEAST.
 JV4888
 JV4888                          STATION RECOVERY (1962)
 JV4888
 JV4888'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 JV4888'THE STATION MARK, HOWELL POINT TOWER NO. 5 REFERENCE MARK,
 JV4888'HOWELL POINT TOWER NO. 5, REFERENCE MARK 3 WAS RECOVERED AS
 JV4888'DESCRIBED AND IN GOOD CONDITION.  REFERENCE MARK 1 (AZIMUTH
 JV4888'MARK) WAS SEARCHED FOR BUT NOT RECOVERED.  THE ARROW ON REFERENCE
 JV4888'MARK 3 IS POINTING ABOUT 83 DEG TO THE RIGHT OF THE STATION.
 JV4888'
 JV4888'AN AZIMUTH MARK AND REFERENCE MARK 4 WAS ESTABLISHED.
 JV4888'
 JV4888'THE PROPERTY IS NOW OWNED BY MR. ROBERT S. WHITE.
 JV4888'
 JV4888'A NEW TO REACH FOLLOWS--
 JV4888'
 JV4888'TO REACH THE STATION FROM THE FIRE DEPARTMENT IN BETTERTON,
 JV4888'MARYLAND, GO WEST ON THE MACADAM ROAD FOR 1.6 MILES TO THE END
 JV4888'OF THE MACADAM AND A CROSSROAD, CONTINUE WEST ON THE GRAVELED
 JV4888'ROAD FOR 0.4 MILE TO A T-ROAD, TURN RIGHT AND GO NORTH AND WEST
 JV4888'ON THE GRAVELED ROAD FOR 0.48 MILE TO THE SOUTHWEST EDGE OF THE
 JV4888'WOODS ON THE RIGHT AND THE AZIMUTH ON THE RIGHT, CONTINUE WEST
 JV4888'ON THE GRAVELED ROAD FOR 0.08 MILE TO THE HOWELL POINT TOWER
 JV4888'NO. 5 AND THE STATION AS DESCRIBED IN 1939.
 JV4888'
 JV4888'THE AZIMUTH MARK IS A STANDARD DISK STAMPED HARRIS 1933 RESET
 JV4888'1962, SET IN TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV4888'5 INCHES ABOVE THE GROUND SURFACE.  IT IS 1.3 FEET SOUTH-SOUTHWEST
 JV4888'OF A STANDARD METAL WITNESS POST AND MARKER, 3.0 FEET SOUTHWEST
 JV4888'OF AN 8-INCH LOCUST TREE, 9.0 FEET WEST-NORTHWEST OF THE WEST
 JV4888'EDGE OF A CULTIVATED FIELD AND 11.6 FEET NORTH-NORTHEAST OF THE
 JV4888'APPROXIMATE CENTER OF THE GRAVELED ROAD.
 JV4888'
 JV4888'REFERENCE MARK 4 IS A STANDARD DISK STAMPED HARRIS NO 4 1962, SET
 JV4888'IN TOP OF A SQUARE CONCRETE MONUMENT WHICH IS 1 INCH BELOW THE
 JV4888'GROUND SURFACE.  IT IS 1.0 FOOT SOUTHWEST OF THE SOUTHWEST
 JV4888'CORNER OF THE SOUTHWEST ONE OF TWO SMALL WHITE BUILDING, 15.0
 JV4888'FEET WEST-SOUTHWEST OF A 15-INCH PINE TREE, 65.37 FEET SOUTHEAST
 JV4888'OF THE STATION AND 77.6 FEET SOUTHEAST OF A STANDARD METAL WITNESS
 JV4888'POST AND MARKER.
 JV4888'
 JV4888'HEIGHT OF LIGHT ABOVE STATION MARK 22.12 METERS.
 JV4888
 JV4888                          STATION RECOVERY (1973)
 JV4888
 JV4888'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV4888'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV4888'CONDITION.  THE DIRECTION TO ALL MARKS WERE WITHIN CLOSE
 JV4888'AGREEMENT WITH THE 1962 DIRECTIONS.  A LONGER DISTANCE OF 0.02
 JV4888'FOOT OR 0.008 METER WAS NOTED TO HOWELLS POINT TOWER 5 RM
 JV4888'1918.  A LONGER DISTANCE OF 0.04 FOOT OR 0.015 METER WAS NOTED
 JV4888'TO REFERENCE MARK THREE.  THE REASON FOR THE LONGER DISTANCE IS
 JV4888'UNKNOWN.  THE ARROW ON REFERENCE MARK THREE IS POINTING ABOUT
 JV4888'83 DEGREES TO THE SOUTH OF THE STATION AS STATED IN THE 1962
 JV4888'DESCRIPTION.
 JV4888'
 JV4888'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV4888'
 JV4888'THE STATION IS LOCATED ON A HIGH HILL OVERLOOKING THE
 JV4888'CHESAPEAKE BAY.  IT IS ABOUT 10 MILES SOUTHEAST OF ABERDEEN,
 JV4888'2 MILES WEST OF BETTERTON AND ON WHAT IS LOCALLY KNOWN AS HOWELL
 JV4888'POINT.  THE PROPERTY IS OWNED BY THE STATE.
 JV4888'
 JV4888'TO REACH FROM THE FIRE STATION IN BETTERTON, GO WEST ON HOWELL
 JV4888'POINT ROAD FOR 1.6 MILES TO THE END OF THE ROAD AT THE ENTRANCE
 JV4888'TO A FARM.  CONTINUE WEST ON FARM ROAD FOR 0.4 MILE TO A
 JV4888'T-INTERSECTION.  TURN RIGHT THEN LEFT AND FOLLOW FARM ROAD NORTH
 JV4888'AND WEST FOR 0.45 MILE TO A WOODED AREA ON THE RIGHT AND THE
 JV4888'AZIMUTH MARK IN THE SOUTHEAST EDGE OF THE WOODS.  CONTINUE WEST
 JV4888'ON THE FARM ROAD FOR 0.15 MILE TO STATION ON THE RIGHT AT 2 HIGH
 JV4888'TOWERS.
 JV4888'
 JV4888'THE STATION MARK IS A STANDARD DISK STAMPED HARRIS 1933, SET IN
 JV4888'THE TOP OF A 10-INCH SQUARE CONCRETE POST WHICH IS FLUSH WITH THE
 JV4888'SURFACE.  IT IS 51 FEET NORTHWEST OF THE NORTHEAST LEG OF A STEEL
 JV4888'TOWER, 21 FEET WEST OF THE NORTHWEST LEG OF A WOODEN TOWER 16
 JV4888'FEET SOUTH OF THE EDGE OF STEEP HILL AND 13.5 FEET SOUTH OF A
 JV4888'WITNESS POST.
 JV4888'
 JV4888'REFERENCE MARK THREE IS A STANDARD DISK STAMPED HARRIS 1933 NO 3,
 JV4888'SET IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS
 JV4888'16 INCHES.  IT IS 94.5 FEET NORTHWEST OF THE NORTHWEST LEG OF
 JV4888'THE STEEL TOWER AND 82 FEET WEST OF THE WITNESS POST.
 JV4888'
 JV4888'REFERENCE MARK FOUR IS A STANDARD DISK STAMPED HARRIS NO 4 1962,
 JV4888'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST WHICH PROJECTS
 JV4888'1 INCH.  IT IS 77.8 FEET SOUTH OF THE WITNESS POST, 25 FEET
 JV4888'SOUTH OF THE SOUTHWEST LEG OF THE WOOD TOWER, 22 FEET NORTHEAST
 JV4888'OF THE SOUTHEAST LEG OF THE STEEL TOWER AND 1.0 FOOT SOUTHWEST
 JV4888'OF THE SOUTHWEST EDGE OF A CONCRETE SLAB.
 JV4888'
 JV4888'THE AZIMUTH MARK IS A STANDARD DISK STAMPED HARRIS 1933 RESET 1962,
 JV4888'SET IN THE TOP OF A 10-INCH SQUARE CONCRETE POST WHICH PROJECTS
 JV4888'INCH. IT IS 2 FEET SOUTHWEST OF A 16-INCH LOCUST TREE, 1.2 FEET SOUTH
 JV4888'OF A WITNESS POST AND 2 FEET NORTH OF THE CENTER OF THE FARM ROAD.
 JV4888'TRANGULATION STATION HOWELL POINT TOWER 1918 WERE INTERSECTED FROM
 JV4888'THIS STATION.
 JV4888'
 JV4888'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4888'2 MILES WEST OF BETTERTON.
 JV4888
 JV4888                          STATION RECOVERY (1996)
 JV4888
 JV4888'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV4888'RECOVERED IN GOOD CONDITION.
 JV4888
 JV4888                          STATION RECOVERY (1999)
 JV4888
 JV4888'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (CN)
 JV4888'NOT GOOD FOR GPS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4905 ***********************************************************************
 JV4905  DESIGNATION -  HARRIS
 JV4905  PID         -  JV4905
 JV4905  STATE/COUNTY-  MD/KENT
 JV4905  COUNTRY     -  US
 JV4905  USGS QUAD   -  HANESVILLE (2016)
 JV4905
 JV4905                         *CURRENT SURVEY CONTROL
 JV4905  ______________________________________________________________________
 JV4905* NAD 83(1991) POSITION- 39 21 05.79595(N) 076 07 59.63106(W)   ADJUSTED
 JV4905* NAVD 88 ORTHO HEIGHT -    18.    (meters)       59.    (feet) SCALED
 JV4905  ______________________________________________________________________
 JV4905  GEOID HEIGHT    -        -33.310 (meters)                     GEOID18
 JV4905  LAPLACE CORR    -         -0.51  (seconds)                    DEFLEC18
 JV4905  HORZ ORDER      -  THIRD
 JV4905
 JV4905.The horizontal coordinates were established by classical geodetic methods
 JV4905.and adjusted by the National Geodetic Survey in January 1992.
 JV4905
 JV4905.The orthometric height was scaled from a topographic map.
 JV4905
 JV4905.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4905.GEOID18 height accuracy estimate available here.
 JV4905
 JV4905.Click photographs - Photos may exist for this station.
 JV4905
 JV4905.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4905
 JV4905. The following values were computed from the NAD 83(1991) position.
 JV4905
 JV4905;                    North         East     Units Scale Factor Converg.
 JV4905;SPC MD       -   187,394.859   474,709.761   MT  0.99998427   +0 32 38.5
 JV4905;SPC MD       -   614,811.30  1,557,443.61   sFT  0.99998427   +0 32 38.5
 JV4905;UTM  18      - 4,356,408.619   402,357.811   MT  0.99971739   -0 43 07.0
 JV4905
 JV4905!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4905!SPC MD       -   1.00000244  x   0.99998427  =   0.99998671
 JV4905!UTM  18      -   1.00000244  x   0.99971739  =   0.99971983
 JV4905
 JV4905:                Primary Azimuth Mark                     Grid Az
 JV4905:SPC MD       -  PLUM PT 2                                235 18 38.3
 JV4905:UTM  18      -  PLUM PT 2                                236 34 23.8
 JV4905
 JV4905_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0235756408(NAD 83)
 JV4905
 JV4905|---------------------------------------------------------------------|
 JV4905| PID    Reference Object                     Distance      Geod. Az  |
 JV4905|                                                           dddmmss.s |
 JV4905| JV4903 PLUM PT 2                           APPROX. 3.9 KM 2355116.8 |
 JV4905|---------------------------------------------------------------------|
 JV4905
 JV4905                          SUPERSEDED SURVEY CONTROL
 JV4905
 JV4905  NAD 83(1986)-  39 21 05.78910(N)    076 07 59.63838(W) AD(       ) 3
 JV4905  NAD 27      -  39 21 05.40600(N)    076 08 00.80600(W) AD(       ) 3
 JV4905  USSD        -  39 21 05.77100(N)    076 08 00.65400(W) AD(       ) 3
 JV4905
 JV4905.Superseded values are not recommended for survey control.
 JV4905
 JV4905.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4905.See file dsdata.pdf to determine how the superseded data were derived.
 JV4905
 JV4905_MARKER: N = NAIL
 JV4905_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4905
 JV4905  HISTORY     - Date     Condition        Report By
 JV4905  HISTORY     - 1898     MONUMENTED       CGS
 JV4905
 JV4905                          STATION DESCRIPTION
 JV4905
 JV4905'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (FWP)
 JV4905'ON EASTERN SIDE OF CHESAPEAKE BAY, JUST ABOVE ENTRANCE TO STILL
 JV4905'POND, 110 FEET FROM EDGE OF AN 80-FOOT BLUFF, AND 100 FEET W OF
 JV4905'LAND WHICH IS 10 FEET HIGHER.  STATION IS MARKED BY TWO 4-INCH
 JV4905'TILE PIPES SET ONE ABOVE THE OTHER, AND A NAIL IN A PINE STUB
 JV4905'EXTENDING TO THE SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7218 ***********************************************************************
 JV7218  DESIGNATION -  HARRIS
 JV7218  PID         -  JV7218
 JV7218  STATE/COUNTY-  MD/FREDERICK
 JV7218  COUNTRY     -  US
 JV7218  USGS QUAD   -  LIBERTYTOWN (2016)
 JV7218
 JV7218                         *CURRENT SURVEY CONTROL
 JV7218  ______________________________________________________________________
 JV7218* NAD 83(2011) POSITION- 39 26 13.14161(N) 077 10 53.15552(W)   ADJUSTED
 JV7218* NAD 83(2011) ELLIP HT-   117.165 (meters)        (06/27/12)   ADJUSTED
 JV7218* NAD 83(2011) EPOCH   -  2010.00
 JV7218* NAVD 88 ORTHO HEIGHT -   149.4   (meters)      490.    (feet) GPS OBS
 JV7218  ______________________________________________________________________
 JV7218  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7218  GEOID HEIGHT    -        -32.510 (meters)                     GEOID93
 JV7218  GEOID HEIGHT    -        -32.171 (meters)                     GEOID18
 JV7218  NAD 83(2011) X  -  1,094,400.718 (meters)                     COMP
 JV7218  NAD 83(2011) Y  - -4,809,807.357 (meters)                     COMP
 JV7218  NAD 83(2011) Z  -  4,029,976.952 (meters)                     COMP
 JV7218  LAPLACE CORR    -          5.00  (seconds)                    DEFLEC18
 JV7218
 JV7218  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7218  Standards:
 JV7218         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7218            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7218  -------------------------------------------------------------------
 JV7218  NETWORK    2.44   2.47           1.04   0.91   1.26      0.35019817
 JV7218  -------------------------------------------------------------------
 JV7218  Click here for local accuracies and other accuracy information.
 JV7218
 JV7218.The horizontal coordinates were established by GPS observations
 JV7218.and adjusted by the National Geodetic Survey in June 2012.
 JV7218
 JV7218.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7218.been affixed to the stable North American tectonic plate. See 
 JV7218.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7218
 JV7218.The horizontal coordinates are valid at the epoch date displayed above
 JV7218.which is a decimal equivalence of Year/Month/Day.
 JV7218
 JV7218.The orthometric height was determined by GPS observations and a
 JV7218.high-resolution geoid model.
 JV7218
 JV7218.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7218.GEOID18 height accuracy estimate available here.
 JV7218
 JV7218.Click photographs - Photos may exist for this station.
 JV7218
 JV7218.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7218
 JV7218.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7218
 JV7218.The ellipsoidal height was determined by GPS observations
 JV7218.and is referenced to NAD 83.
 JV7218
 JV7218. The following values were computed from the NAD 83(2011) position.
 JV7218
 JV7218;                    North         East     Units Scale Factor Converg.
 JV7218;SPC MD       -   196,534.069   384,380.369   MT  0.99999775   -0 06 49.9
 JV7218;SPC MD       -   644,795.52  1,261,087.93   sFT  0.99999775   -0 06 49.9
 JV7218;UTM  18      - 4,367,541.781   312,264.515   MT  1.00003396   -1 23 10.0
 JV7218
 JV7218!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7218!SPC MD       -   0.99998162  x   0.99999775  =   0.99997937
 JV7218!UTM  18      -   0.99998162  x   1.00003396  =   1.00001558
 JV7218
 JV7218_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1226467541(NAD 83)
 JV7218
 JV7218                          SUPERSEDED SURVEY CONTROL
 JV7218
 JV7218  NAD 83(2007)-  39 26 13.14178(N)    077 10 53.15615(W) AD(2002.00) 0
 JV7218  ELLIP H (02/10/07)  117.188  (m)                       GP(2002.00)    
 JV7218  ELLIP H (08/30/02)  117.151  (m)                       GP(       ) 4 2
 JV7218  NAD 83(1993)-  39 26 13.14164(N)    077 10 53.15665(W) AD(       ) 1
 JV7218  ELLIP H (11/14/94)  117.148  (m)                       GP(       ) 4 2
 JV7218  NAD 83(1991)-  39 26 13.14234(N)    077 10 53.15704(W) AD(       ) 1
 JV7218  ELLIP H (02/09/94)  117.127  (m)                       GP(       ) 4 1
 JV7218
 JV7218.Superseded values are not recommended for survey control.
 JV7218
 JV7218.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7218.See file dsdata.pdf to determine how the superseded data were derived.
 JV7218
 JV7218_MARKER: DD = SURVEY DISK
 JV7218_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7218_STAMPING: HARRIS 1993
 JV7218_MARK LOGO: MD-021
 JV7218_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7218_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7218+STABILITY: SURFACE MOTION
 JV7218_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7218+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7218
 JV7218  HISTORY     - Date     Condition        Report By
 JV7218  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7218
 JV7218                          STATION DESCRIPTION
 JV7218
 JV7218'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7218'FROM MT. AIRY, MD, GO WEST ON MD RTE 144 2.5 MILES (4.0 KM) TO
 JV7218'WOODVILLE ROAD. TURN RIGHT AND GO NORTH ON WOODVILLE ROAD 5.5 MILES
 JV7218'(8.9 KM) TO HARRISVILLE ROAD. TURN LEFT ON HARRISVILLE ROAD AND GO
 JV7218'WEST 0.1 MILES (0.2 KM) TO STATION ON RIGHT. STATION IS IN LINE WITH
 JV7218'THE CENTERLINE OF HILLSIDE TURN AND 6 FEET (1.8 M) NORTHEAST OF THE
 JV7218'NORTHEAST EDGE OF PAVEMENT ON HARRISVILLE ROAD. STATION IS A BRASS
 JV7218'DISK SET IN THE TOP OF AN 8 INCH ROUND CONCRETE MONUMENT SET FLUSH
 JV7218'WITH THE GROUND..
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6521 ***********************************************************************
 JV6521  DESIGNATION -  HARRIS 2
 JV6521  PID         -  JV6521
 JV6521  STATE/COUNTY-  MD/HOWARD
 JV6521  COUNTRY     -  US
 JV6521  USGS QUAD   -  CLARKSVILLE (2016)
 JV6521
 JV6521                         *CURRENT SURVEY CONTROL
 JV6521  ______________________________________________________________________
 JV6521* NAD 83(1991) POSITION- 39 11 01.80668(N) 076 52 38.54466(W)   ADJUSTED
 JV6521* NAVD 88 ORTHO HEIGHT -   122.82  (meters)      403.0   (feet) RESET
 JV6521  ______________________________________________________________________
 JV6521  GEOID HEIGHT    -        -32.157 (meters)                     GEOID18
 JV6521  LAPLACE CORR    -         -3.57  (seconds)                    DEFLEC18
 JV6521  HORZ ORDER      -  THIRD
 JV6521  VERT ORDER      -  THIRD
 JV6521
 JV6521.The horizontal coordinates were established by classical geodetic methods
 JV6521.and adjusted by the National Geodetic Survey in January 1992.
 JV6521
 JV6521.The orthometric height was computed from unverified reset data.
 JV6521
 JV6521.No vertical observational check was made to the station.
 JV6521
 JV6521.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6521.GEOID18 height accuracy estimate available here.
 JV6521
 JV6521.Click photographs - Photos may exist for this station.
 JV6521
 JV6521.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6521
 JV6521. The following values were computed from the NAD 83(1991) position.
 JV6521
 JV6521;                    North         East     Units Scale Factor Converg.
 JV6521;SPC MD       -   168,421.328   410,594.766   MT  0.99996426   +0 04 37.1
 JV6521;SPC MD       -   552,562.31  1,347,092.99   sFT  0.99996426   +0 04 37.1
 JV6521;UTM  18      - 4,338,856.047   337,850.525   MT  0.99992374   -1 11 11.0
 JV6521
 JV6521!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6521!SPC MD       -   0.99998578  x   0.99996426  =   0.99995004
 JV6521!UTM  18      -   0.99998578  x   0.99992374  =   0.99990952
 JV6521
 JV6521:                Primary Azimuth Mark                     Grid Az
 JV6521:SPC MD       -  2340011                                  131 31 39.5
 JV6521:UTM  18      -  2340011                                  132 47 27.6
 JV6521
 JV6521_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3785038856(NAD 83)
 JV6521
 JV6521|---------------------------------------------------------------------|
 JV6521| PID    Reference Object                     Distance      Geod. Az  |
 JV6521|                                                           dddmmss.s |
 JV6521| JV6522 HARRIS 2 RM 3                        16.400 METERS 03803     |
 JV6521| JV6523 HARRIS 2 RM 4                        11.112 METERS 11402     |
 JV6521| JV6560 2340011                             404.401 METERS 1313616.6 |
 JV6521| JV1356 HARRIS                               32.489 METERS 20801     |
 JV6521| JV6023 JOHN HOPKINS PHYSICS LAB TANK       APPROX. 3.0 KM 2225851.5 |
 JV6521|---------------------------------------------------------------------|
 JV6521
 JV6521                          SUPERSEDED SURVEY CONTROL
 JV6521
 JV6521  NAD 83(1986)-  39 11 01.80510(N)    076 52 38.55378(W) AD(       ) 3
 JV6521  NGVD 29 (11/18/05)  123.03   (m)          403.6    (f) RESET       3  
 JV6521  NGVD 29             123.03   (m)          403.6    (f) LEVELING    3  
 JV6521
 JV6521.Superseded values are not recommended for survey control.
 JV6521
 JV6521.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6521.See file dsdata.pdf to determine how the superseded data were derived.
 JV6521
 JV6521_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6521_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6521_STAMPING: HARRIS 2 1983
 JV6521_MARK LOGO: NGS
 JV6521_PROJECTION: FLUSH
 JV6521_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6521_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6521+STABILITY: SURFACE MOTION
 JV6521
 JV6521  HISTORY     - Date     Condition        Report By
 JV6521  HISTORY     - 1983     MONUMENTED       NGS
 JV6521  HISTORY     - 20210321 MARK NOT FOUND   PROFLN
 JV6521
 JV6521                          STATION DESCRIPTION
 JV6521
 JV6521'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JV6521'IN SIMPSONVILLE.
 JV6521'IN THE NORTHWEST ANGLE OF THE INTERSECTION OF STATE HIGHWAYS 32 AND
 JV6521'29, 13.8 M (45.3 FT) NORTHEAST FROM THE CENTER OF A ACCESS ROAD ALONG
 JV6521'THE NORTHEAST SIDE OF THE ENTRANCE RAMP FROM THE SOUTH BOUND LANE OF
 JV6521'STATE HIGHWAY 29 ONTO WEST BOUND STATE HIGHWAY 32, 9.9 M (32.5 FT)
 JV6521'NORTH-NORTHWEST FROM THE SOUTHWEST CORNER OF THE LOCUST METHODIST
 JV6521'CHURCH, 6.6 M (21.7 FT) EAST FROM A POWERLINE POLE NUMBERED 219787,
 JV6521'4.6 M (15.1 FT) SOUTH FROM A 1 METER ROUND CONCRETE LID OVER A WELL
 JV6521'AND 18.4 M (60.4 FT) NORTHEAST FROM A CONCRETE CHURCH MONUMENT.
 JV6521'THE MARK IS 1.0 M ABOVE .
 JV6521
 JV6521                          STATION RECOVERY (2021)
 JV6521
 JV6521'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV6521'THE POSITION OF THE MARK WAS SET OUT BY TRAVERSE FROM A NEARBY OPUS-RS
 JV6521'POINT AND REFERENCE MARK 4. A CIRCLE 3 FT (0.9 M) DIAMETER CENTERED ON
 JV6521'THAT POSITION WAS PROBED DOWN TO 18 INCHES (46 CM).  NO MARK WAS
 JV6521'ENCOUNTERED.
 JV6521'
 JV6521'THERE HAVE BEEN CHANGES SINCE THE MARK WAS ESTABLISHED.  THE ROUND
 JV6521'CONCRETE WELL COVER IS NO LONGER EVIDENT OR VISIBLE.  THERE IS A
 JV6521'CONCRETE ZIG-ZAG HANDICAPPED RAMP LEADING TO THE FRONT DOOR ON THE
 JV6521'SAME WEST SIDE OF THE CHURCH AS THE STATION.  NO ONE WAS AT THE CHURCH
 JV6521'DURING THIS VISIT TO DISCUSS THE SITUATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6522 ***********************************************************************
 JV6522  DESIGNATION -  HARRIS 2 RM 3
 JV6522  PID         -  JV6522
 JV6522  STATE/COUNTY-  MD/HOWARD
 JV6522  COUNTRY     -  US
 JV6522  USGS QUAD   -  CLARKSVILLE (2016)
 JV6522
 JV6522                         *CURRENT SURVEY CONTROL
 JV6522  ______________________________________________________________________
 JV6522* NAD 83(1991) POSITION- 39 11 02.22541(N) 076 52 38.12344(W)   NO CHECK
 JV6522* NAVD 88 ORTHO HEIGHT -   122.78  (meters)      402.8   (feet) RESET
 JV6522  ______________________________________________________________________
 JV6522  GEOID HEIGHT    -        -32.157 (meters)                     GEOID18
 JV6522  LAPLACE CORR    -         -3.57  (seconds)                    DEFLEC18
 JV6522  HORZ ORDER      -  THIRD
 JV6522  VERT ORDER      -  THIRD
 JV6522
 JV6522.The horizontal coordinates were established by classical geodetic methods
 JV6522.and adjusted by the National Geodetic Survey in January 1992.
 JV6522
 JV6522.No horizontal observational check was made to the station.
 JV6522
 JV6522.The orthometric height was computed from unverified reset data.
 JV6522
 JV6522.No vertical observational check was made to the station.
 JV6522
 JV6522.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6522.GEOID18 height accuracy estimate available here.
 JV6522
 JV6522.Click photographs - Photos may exist for this station.
 JV6522
 JV6522.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6522
 JV6522. The following values were computed from the NAD 83(1991) position.
 JV6522
 JV6522;                    North         East     Units Scale Factor Converg.
 JV6522;SPC MD       -   168,434.255   410,604.858   MT  0.99996427   +0 04 37.3
 JV6522;SPC MD       -   552,604.72  1,347,126.10   sFT  0.99996427   +0 04 37.3
 JV6522;UTM  18      - 4,338,868.747   337,860.899   MT  0.99992370   -1 11 10.8
 JV6522
 JV6522!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6522!SPC MD       -   0.99998578  x   0.99996427  =   0.99995005
 JV6522!UTM  18      -   0.99998578  x   0.99992370  =   0.99990948
 JV6522
 JV6522_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3786038868(NAD 83)
 JV6522
 JV6522                          SUPERSEDED SURVEY CONTROL
 JV6522
 JV6522  NAD 83(1986)-  39 11 02.22383(N)    076 52 38.13256(W) AD(       ) 3
 JV6522  NGVD 29 (11/18/05)  123.00   (m)          403.5    (f) RESET       3  
 JV6522  NGVD 29             123.00   (m)          403.5    (f) LEVELING    3  
 JV6522
 JV6522.Superseded values are not recommended for survey control.
 JV6522
 JV6522.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6522.See file dsdata.pdf to determine how the superseded data were derived.
 JV6522
 JV6522_MARKER: DR = REFERENCE MARK DISK
 JV6522_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6522_STAMPING: HARRIS 2 NO 3 1983
 JV6522_MARK LOGO: NGS
 JV6522_PROJECTION: FLUSH
 JV6522_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6522_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6522+STABILITY: SURFACE MOTION
 JV6522
 JV6522  HISTORY     - Date     Condition        Report By
 JV6522  HISTORY     - 1983     MONUMENTED       NGS
 JV6522  HISTORY     - 20210321 MARK NOT FOUND   PROFLN
 JV6522
 JV6522                          STATION DESCRIPTION
 JV6522
 JV6522'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JV6522'IN SIMPSONVILLE.
 JV6522'LOCATED IN THE NORTHWEST ANGLE OF THE INTERSECTION OF STATE HIGHWAYS
 JV6522'29 AND 32, AT THE NORTHEAST CORNER OF THE LOCUST METHODIST CHURCH,
 JV6522'1.7 M (5.6 FT) WEST FROM THE CENTER OF THE NORTHWEST ENTRANCE TO THE
 JV6522'CHURCH, 16.1 M (52.8 FT) EAST-SOUTHEAST FROM THE CENTER OF A 1 METER
 JV6522'ROUND CONCRETE SLAB COVERING A WELL, 12.5 M (41.0 FT) NORTHEAST FROM
 JV6522'THE NORTHWEST CORNER OF THE CHURCH AND 22.3 M (73.2 FT) EAST FROM A
 JV6522'POWERLINE POLE NUMBERED 219787.
 JV6522'THE MARK IS 1.0 M ABOVE ROAD.
 JV6522
 JV6522                          STATION RECOVERY (2021)
 JV6522
 JV6522'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV6522'THE POSITION OF THE MARK WAS SET OUT BY TRAVERSE FROM A NEARBY OPUS-RS
 JV6522'POINT AND REFERENCE MARK 4. A CIRCLE 2 FT (0.6 M) DIAMETER CENTERED ON
 JV6522'THAT POSITION WAS PROBED DOWN TO 18 INCHES (46 CM).  NO MARK WAS
 JV6522'ENCOUNTERED.
 JV6522'
 JV6522'THERE HAVE BEEN CHANGES SINCE THE MARK WAS ESTABLISHED.  THE ROUND
 JV6522'CONCRETE WELL COVER IS NO LONGER EVIDENT OR VISIBLE.  THERE IS A
 JV6522'CONCRETE ZIG-ZAG HANDICAPPED RAMP LEADING TO THE FRONT DOOR ON THE
 JV6522'SAME WEST SIDE OF THE CHURCH AS THE MAIN STATION.  NO ONE WAS AT THE
 JV6522'CHURCH DURING THIS VISIT TO DISCUSS THE SITUATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6523 ***********************************************************************
 JV6523  DESIGNATION -  HARRIS 2 RM 4
 JV6523  PID         -  JV6523
 JV6523  STATE/COUNTY-  MD/HOWARD
 JV6523  COUNTRY     -  US
 JV6523  USGS QUAD   -  CLARKSVILLE (2016)
 JV6523
 JV6523                         *CURRENT SURVEY CONTROL
 JV6523  ______________________________________________________________________
 JV6523* NAD 83(1991) POSITION- 39 11 01.65991(N) 076 52 38.12182(W)   ADJUSTED
 JV6523* NAVD 88 ORTHO HEIGHT -   122.88  (meters)      403.1   (feet) RESET
 JV6523  ______________________________________________________________________
 JV6523  GEOID HEIGHT    -        -32.157 (meters)                     GEOID18
 JV6523  LAPLACE CORR    -         -3.57  (seconds)                    DEFLEC18
 JV6523  HORZ ORDER      -  THIRD
 JV6523  VERT ORDER      -  THIRD
 JV6523
 JV6523.The horizontal coordinates were established by classical geodetic methods
 JV6523.and adjusted by the National Geodetic Survey in January 1992.
 JV6523
 JV6523.The orthometric height was computed from unverified reset data.
 JV6523
 JV6523.No vertical observational check was made to the station.
 JV6523
 JV6523.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6523.GEOID18 height accuracy estimate available here.
 JV6523
 JV6523.Click photographs - Photos may exist for this station.
 JV6523
 JV6523.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6523
 JV6523. The following values were computed from the NAD 83(1991) position.
 JV6523
 JV6523;                    North         East     Units Scale Factor Converg.
 JV6523;SPC MD       -   168,416.816   410,604.921   MT  0.99996426   +0 04 37.3
 JV6523;SPC MD       -   552,547.50  1,347,126.31   sFT  0.99996426   +0 04 37.3
 JV6523;UTM  18      - 4,338,851.312   337,860.576   MT  0.99992370   -1 11 10.8
 JV6523
 JV6523!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6523!SPC MD       -   0.99998577  x   0.99996426  =   0.99995003
 JV6523!UTM  18      -   0.99998577  x   0.99992370  =   0.99990947
 JV6523
 JV6523_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3786038851(NAD 83)
 JV6523
 JV6523                          SUPERSEDED SURVEY CONTROL
 JV6523
 JV6523  NAD 83(1986)-  39 11 01.65833(N)    076 52 38.13094(W) AD(       ) 3
 JV6523  NGVD 29 (11/18/05)  123.10   (m)          403.9    (f) RESET       3  
 JV6523  NGVD 29             123.09   (m)          403.8    (f) LEVELING    3  
 JV6523
 JV6523.Superseded values are not recommended for survey control.
 JV6523
 JV6523.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6523.See file dsdata.pdf to determine how the superseded data were derived.
 JV6523
 JV6523_MARKER: DR = REFERENCE MARK DISK
 JV6523_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6523_SP_SET: STEP LANDING
 JV6523_STAMPING: HARRIS 2 NO 4 1983
 JV6523_MARK LOGO: NGS
 JV6523_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6523_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6523
 JV6523  HISTORY     - Date     Condition        Report By
 JV6523  HISTORY     - 1983     MONUMENTED       NGS
 JV6523  HISTORY     - 20210321 GOOD             PROFLN
 JV6523
 JV6523                          STATION DESCRIPTION
 JV6523
 JV6523'DESCRIBED BY NATIONAL GEODETIC SURVEY 1983
 JV6523'IN SIMPSONVILLE.
 JV6523'IN THE NORTHWEST ANGLE OF THE INTERSECTION OF STATE HIGHWAYS 29 AND
 JV6523'32, AT A CONCRETE LANDING FOR THE FRONT ENTRANCE FOR THE LOCUST
 JV6523'METHODIST CHURCH, 4.9 M (16.1 FT) SOUTHWEST FROM THE NORTHWEST CORNER
 JV6523'OF THE CHURCH, 9.4 M (30.8 FT) NORTH-NORTHWEST FROM A CONCRETE CHURCH
 JV6523'MONUMENT, 16.5 M (54.1 FT) SOUTHEAST FROM A POWERLINE POLE NUMBERED
 JV6523'219787 AND 17.2 M (56.4 FT) NORTHEAST FROM THE CENTER OF A ACCESS
 JV6523'ROAD ALONG THE ENTRANCE RAMP FROM THE SOUTH BOUND LANE OF STATE
 JV6523'HIGHWAY 29 ONTO THE WEST BOUND LANE OF STATE HIGHWAY 32.
 JV6523'THE MARK IS 1 M ABOVE ROAD.
 JV6523
 JV6523                          STATION RECOVERY (2021)
 JV6523
 JV6523'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2021 (JRO)
 JV6523'THE MARK IS RIGHT IN FRONT OF THE LOCUST UNITED METHODIST CHURCH IN A
 JV6523'CONCRETE SIDEWALK THAT ADJOINS THE FRONT STEPS.  IT IS BELIEVED TO BE
 JV6523'THE ONLY SURVIVING MARK OF THE THREE ESTABLISHED AT THIS CHURCH IN
 JV6523'1983.
 JV6523'
 JV6523'IT IS 7.5 FT (2.3 M) SOUTH OF THE CHURCH SOUTH WALL - WHITE STUCCO - 4
 JV6523'FT (1.2 M) EAST OF THE WEST WALL EXTENDED, 3 FT (0.9 M) SOUTH OF THE
 JV6523'SOUTH EDGE OF A CONCRETE HANDICAPPED RAMP, 0.7 FT (21 CM) WEST OF THE
 JV6523'WEST EDGE OF THE BOTTOM BRICK STEP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1355 ***********************************************************************
 JV1355  DESIGNATION -  HARRIS AZ MK
 JV1355  PID         -  JV1355
 JV1355  STATE/COUNTY-  MD/HOWARD
 JV1355  COUNTRY     -  US
 JV1355  USGS QUAD   -  CLARKSVILLE (2016)
 JV1355
 JV1355                         *CURRENT SURVEY CONTROL
 JV1355  ______________________________________________________________________
 JV1355* NAD 83(2011) POSITION- 39 10 44.73678(N) 076 52 39.53007(W)   ADJUSTED
 JV1355* NAD 83(2011) ELLIP HT-    89.417 (meters)        (06/27/12)   ADJUSTED
 JV1355* NAD 83(2011) EPOCH   -  2010.00
 JV1355* NAVD 88 ORTHO HEIGHT -   121.601 (meters)      398.95  (feet) ADJUSTED
 JV1355  ______________________________________________________________________
 JV1355  GEOID HEIGHT    -        -32.158 (meters)                     GEOID18
 JV1355  NAD 83(2011) X  -  1,124,000.036 (meters)                     COMP
 JV1355  NAD 83(2011) Y  - -4,821,580.601 (meters)                     COMP
 JV1355  NAD 83(2011) Z  -  4,007,805.506 (meters)                     COMP
 JV1355  LAPLACE CORR    -         -3.59  (seconds)                    DEFLEC18
 JV1355  DYNAMIC HEIGHT  -        121.536 (meters)      398.74  (feet) COMP
 JV1355  MODELED GRAVITY -    980,088.5   (mgal)                       NAVD 88
 JV1355
 JV1355  VERT ORDER      -  SECOND    CLASS 0
 JV1355
 JV1355  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV1355  Standards:
 JV1355         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV1355            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV1355  -------------------------------------------------------------------
 JV1355  NETWORK    1.38   1.57           0.61   0.51   0.80     -0.15871578
 JV1355  -------------------------------------------------------------------
 JV1355  Click here for local accuracies and other accuracy information.
 JV1355
 JV1355.The horizontal coordinates were established by GPS observations
 JV1355.and adjusted by the National Geodetic Survey in June 2012.
 JV1355
 JV1355.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV1355.been affixed to the stable North American tectonic plate. See 
 JV1355.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV1355
 JV1355.The horizontal coordinates are valid at the epoch date displayed above
 JV1355.which is a decimal equivalence of Year/Month/Day.
 JV1355
 JV1355.The orthometric height was determined by differential leveling and
 JV1355.adjusted by the NATIONAL GEODETIC SURVEY
 JV1355.in June 1991.
 JV1355
 JV1355.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1355.GEOID18 height accuracy estimate available here.
 JV1355
 JV1355.Click photographs - Photos may exist for this station.
 JV1355
 JV1355.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV1355
 JV1355.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1355
 JV1355.The ellipsoidal height was determined by GPS observations
 JV1355.and is referenced to NAD 83.
 JV1355
 JV1355.The dynamic height is computed by dividing the NAVD 88
 JV1355.geopotential number by the normal gravity value computed on the
 JV1355.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1355.degrees latitude (g = 980.6199 gals.).
 JV1355
 JV1355.The modeled gravity was interpolated from observed gravity values.
 JV1355
 JV1355. The following values were computed from the NAD 83(2011) position.
 JV1355
 JV1355;                    North         East     Units Scale Factor Converg.
 JV1355;SPC MD       -   167,894.904   410,571.822   MT  0.99996382   +0 04 36.5
 JV1355;SPC MD       -   550,835.20  1,347,017.72   sFT  0.99996382   +0 04 36.5
 JV1355;UTM  18      - 4,338,330.278   337,815.982   MT  0.99992388   -1 11 11.2
 JV1355
 JV1355!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1355!SPC MD       -   0.99998597  x   0.99996382  =   0.99994979
 JV1355!UTM  18      -   0.99998597  x   0.99992388  =   0.99990985
 JV1355
 JV1355_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3781538330(NAD 83)
 JV1355
 JV1355                          SUPERSEDED SURVEY CONTROL
 JV1355
 JV1355  NAD 83(2007)-  39 10 44.73685(N)    076 52 39.53095(W) AD(2002.00) 0
 JV1355  ELLIP H (02/10/07)   89.443  (m)                       GP(2002.00)    
 JV1355  ELLIP H (08/30/02)   89.436  (m)                       GP(       ) 4 2
 JV1355  NAD 83(1991)-  39 10 44.73692(N)    076 52 39.53045(W) AD(       ) 1
 JV1355  ELLIP H (11/16/00)   89.365  (m)                       GP(       ) 4 1
 JV1355  NAD 83(1991)-  39 10 44.73741(N)    076 52 39.52983(W) AD(       ) 3
 JV1355  NAD 83(1986)-  39 10 44.73584(N)    076 52 39.53886(W) AD(       ) 3
 JV1355  NAVD 88             121.60   (m)          398.9    (f) LEVELING    3  
 JV1355  NGVD 29             121.82   (m)          399.7    (f) LEVELING    3  
 JV1355  NGVD 29 (11/26/84)  121.816  (m)          399.66   (f) ADJUSTED    2 0
 JV1355
 JV1355.Superseded values are not recommended for survey control.
 JV1355
 JV1355.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1355.See file dsdata.pdf to determine how the superseded data were derived.
 JV1355
 JV1355_MARKER: DZ = AZIMUTH MARK DISK
 JV1355_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1355_STAMPING: HARRIS 1957
 JV1355_MARK LOGO: CGS
 JV1355_PROJECTION: PROJECTING 5 CENTIMETERS
 JV1355_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV1355_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1355+STABILITY: SURFACE MOTION
 JV1355_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1355+SATELLITE: SATELLITE OBSERVATIONS - August 02, 2017
 JV1355
 JV1355  HISTORY     - Date     Condition        Report By
 JV1355  HISTORY     - 1957     MONUMENTED       CGS
 JV1355  HISTORY     - 1966     GOOD             MDSRC
 JV1355  HISTORY     - 19830518 GOOD             NGS
 JV1355  HISTORY     - 20000915 GOOD             MD-027
 JV1355  HISTORY     - 20041122 GOOD             GEOMET
 JV1355  HISTORY     - 20091104 GOOD             MDSHA
 JV1355  HISTORY     - 20091221 GOOD             INDIV
 JV1355  HISTORY     - 20120926 GOOD             WOOLPT
 JV1355  HISTORY     - 20170802 GOOD             NGS
 JV1355
 JV1355                          STATION DESCRIPTION
 JV1355
 JV1355'DESCRIBED BY MD STATE ROADS COMM 1966
 JV1355'AT SIMPSONVILLE.
 JV1355'SOUTH ALONG U.S. HIGHWAY 29 FOR 0.2 MILE FROM THE INTERSECTION
 JV1355'OF STATE HIGHWAY 32, TO MACADAM ROAD LEADING WEST INTO A HOUSING
 JV1355'DEVELOPMENT.  THENCE WEST ALONG MACADAM ROAD FOR 0.1 MILE TO
 JV1355'FIRST HOUSE ON LEFT.  IT IS 150.0 FEET SOUTHWEST OF HOUSE, 27.0
 JV1355'FEET SOUTHEAST OF CENTERLINE OF MACADAM ROAD, 5.0 FEET EAST OF
 JV1355'UTILITY POLE AND 2.0 FEET NORTHEAST OF WITNESS POST.  IT IS A
 JV1355'STANDARD AZIMUTH MARK DISK SET IN THE TOP OF A CONCRETE POST AND
 JV1355'PROJECTS 4 INCHES.
 JV1355
 JV1355                          STATION RECOVERY (1983)
 JV1355
 JV1355'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JV1355'THE STATION IS LOCATED ABOUT 25.75 KM (16.00 MI) SOUTHWEST OF
 JV1355'BALTIMORE, 9 KM (5.60 MI) NORTH OF LAUREL AND 3.25 KM (2.00 MI) SOUTH
 JV1355'OF COLUMBIA.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV1355'TO REACH FROM THE INTERSECTION OF STATE HIGHWAYS 29 AND 32 IN THE EAST
 JV1355'EDGE OF SIMPSONVILLE, GO SOUTH ON STATE HIGHWAY 29 FOR 0.3 KM
 JV1355'(0.20 MI) TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO WEST ON VISTA ROAD
 JV1355'FOR 0.1 KM (0.05 MI) TO THE STATION ON THE LEFT.
 JV1355'THE DISK IS SET IN THE TOP OF A 0.25 M (0.8 FT) SQUARE CONCRETE
 JV1355'MONUMENT WHICH IS FLUSH WITH THE SURFACE.  IT IS 23.32 M (76.5 FT)
 JV1355'SOUTHWEST OF THE CENTER OF VISTA ROAD, 8.38 M (27.5 FT) EAST-SOUTHEAST
 JV1355'OF THE CENTER OF LONGVIEW ROAD, 1.58 M (5.2 FT) NORTHEAST OF A
 JV1355'POWERLINE POLE NUMBERED 8125577 AND 0.64 M (2.1 FT) NORTH OF A
 JV1355'CARSONITE WITNESS POST.
 JV1355
 JV1355                          STATION RECOVERY (2000)
 JV1355
 JV1355'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV1355'REPORT BY HOWARD COUNTY 2000   FOUND IN GOOD CONDITION. STATION
 JV1355'IS AT SIMPSONVILLE NEAR THE  INTERSECTION OF  MARYLAND STATE
 JV1355'ROUTES 32 AND 29. TO REACH THE  STATION  FROM SAID INTERSECTION GO
 JV1355'SOUTH 0.6 MILES ALONG ROUTE 29  TO RIVERS EDGE ROAD (FIRST TRAFFIC
 JV1355'LIGHT) , THEN TURN RIGHT FOR ONE  BLOCK TO  LONG VIEW ROAD, THEN
 JV1355'TURN RIGHT AGAIN AND GO NORTH 0.4  MILES ALONG LONG VIEW ROAD TO
 JV1355'THE STATION ON THE RIGHT.   THE STATION IS 15  FEET FROM THE WEST
 JV1355'EDGE OF PAVEMENT , 4.8 FEET  TO POLE G AND E 815577, 57 FEET TO THE
 JV1355'NORTHWEST CORNER OF A ONE  STORY BRICK HOUSE,  74.2 FEET
 JV1355'SOUTHWEST OF POLE G AND E 526353 AND  ABOUT 200 FEET TO THE END OF
 JV1355'LONGVIEW ROAD AT CORNER WITH VISTA  ROAD.
 JV1355'
 JV1355
 JV1355                          STATION RECOVERY (2004)
 JV1355
 JV1355'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2004 (KRO)
 JV1355'CORRECTION, STATION IS ABOUT 20 FEET FROM THE END OF LONGVIEW ROAD AT
 JV1355'THE CORNER WITH VISTA ROAD, NOT 200 FEET
 JV1355
 JV1355                          STATION RECOVERY (2009)
 JV1355
 JV1355'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV1355'THE ONE STORY BRICK HOUSE IS GONE. THE MARK IS NOW 75.1 FEET WEST OF
 JV1355'BGE POLE 81557, 76.5 FEET SOUTHWEST OF THE CENTER OF VISTA RD., 9.9
 JV1355'FEET WEST NORTHWEST OF THE NORTH CORNER OF A CONCRETE PAD FOR A
 JV1355'TELEPHONE JUNCTION BOX, 27.5 FEET EAST SOUTHEAST OF THE CENTER OF
 JV1355'LONGVIEW RD., AND 47.3 FEET EAST SOUTHEAST OF A FIRE HYDRANT, AND 5.0
 JV1355'FEET NORTHEAST OF BGE POLE 815544.
 JV1355
 JV1355                          STATION RECOVERY (2009)
 JV1355
 JV1355'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2009 (WRA)
 JV1355'DESCRIPTION IS ADEQUATE
 JV1355
 JV1355                          STATION RECOVERY (2012)
 JV1355
 JV1355'RECOVERY NOTE BY WOOLPERT CONSULTANTS 2012 (JRS)
 JV1355'RECOVERED IN GOOD CONDITION.
 JV1355
 JV1355                          STATION RECOVERY (2017)
 JV1355
 JV1355'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV1355'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4899 ***********************************************************************
 JV4899  DESIGNATION -  HARRIS AZ MK RESET
 JV4899  PID         -  JV4899
 JV4899  STATE/COUNTY-  MD/KENT
 JV4899  COUNTRY     -  US
 JV4899  USGS QUAD   -  BETTERTON (2017)
 JV4899
 JV4899                         *CURRENT SURVEY CONTROL
 JV4899  ______________________________________________________________________
 JV4899* NAD 83(1991) POSITION- 39 22 15.51244(N) 076 06 20.41452(W)   ADJUSTED
 JV4899* NAVD 88 ORTHO HEIGHT -    22.    (meters)       72.    (feet) VERTCON3
 JV4899  ______________________________________________________________________
 JV4899  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 JV4899  LAPLACE CORR    -         -0.66  (seconds)                    DEFLEC18
 JV4899  HORZ ORDER      -  SECOND
 JV4899
 JV4899.The horizontal coordinates were established by classical geodetic methods
 JV4899.and adjusted by the National Geodetic Survey in January 1992.
 JV4899
 JV4899.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4899.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4899
 JV4899.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4899.GEOID18 height accuracy estimate available here.
 JV4899
 JV4899.Click photographs - Photos may exist for this station.
 JV4899
 JV4899.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4899
 JV4899. The following values were computed from the NAD 83(1991) position.
 JV4899
 JV4899;                    North         East     Units Scale Factor Converg.
 JV4899;SPC MD       -   189,567.664   477,064.126   MT  0.99998713   +0 33 40.7
 JV4899;SPC MD       -   621,939.91  1,565,167.89   sFT  0.99998713   +0 33 40.7
 JV4899;UTM  18      - 4,358,528.440   404,758.833   MT  0.99971168   -0 42 05.1
 JV4899
 JV4899!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4899!SPC MD       -   1.00000182  x   0.99998713  =   0.99998895
 JV4899!UTM  18      -   1.00000182  x   0.99971168  =   0.99971349
 JV4899
 JV4899_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0475858528(NAD 83)
 JV4899
 JV4899                          SUPERSEDED SURVEY CONTROL
 JV4899
 JV4899  NAD 83(1986)-  39 22 15.50506(N)    076 06 20.42307(W) AD(       ) 2
 JV4899  NAD 27      -  39 22 15.18603(N)    076 06 21.18497(W) AD(       ) 2
 JV4899  NGVD 29 (07/19/86)   22.     (m)           72.     (f) VERT ANG       
 JV4899
 JV4899.Superseded values are not recommended for survey control.
 JV4899
 JV4899.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4899.See file dsdata.pdf to determine how the superseded data were derived.
 JV4899
 JV4899_MARKER: DZ = AZIMUTH MARK DISK
 JV4899_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4899_STAMPING: HARRIS 1973
 JV4899_MARK LOGO: NGS
 JV4899_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4899+STABILITY: SURFACE MOTION
 JV4899
 JV4899  HISTORY     - Date     Condition        Report By
 JV4899  HISTORY     - 1973     MONUMENTED       NGS
 JV4899
 JV4899                          STATION DESCRIPTION
 JV4899
 JV4899'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973
 JV4899'THE AZIMUTH MARK IS A STANDARD DISK STAMPED HARRIS 1933 RESET
 JV4899'1962, SET IN THE TOP OF A 10-INCH SQUARE CONCRETE POST WHICH
 JV4899'PROJECTS 1 INCH.  IT IS 2 FEET SOUTHWEST OF A 16-INCH LOCUS TREE,
 JV4899'1.2 FEET SOUTH OF A WITNESS POST AND 12 FEET NORTH OF THE CENTER
 JV4899'OF THE FARM ROAD.
 JV4899'
 JV4899'TO REACH FROM THE FIRE STATION IN BETTERTON, GO WEST ON HOWELL
 JV4899'POINT ROAD FOR 1.6 MILES TO THE END OF THE ROAD AT THE ENTRANCE
 JV4899'TO A FARM.  CONTINUE WEST ON FARM ROAD FOR 0.4 MILE TO A
 JV4899'T-INTERSECTION.  TURN RIGHT THEN LEFT AND FOLLOW FARM ROAD NORTH
 JV4899'AND WEST FOR 0.45 MILE TO A WOODED AREA ON THE RIGHT AND THE
 JV4899'AZIMUTH MARK IN THE SOUTHEAST EDGE OF THE WOODS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6274 ***********************************************************************
 HV6274  DESIGNATION -  HARRISON
 HV6274  PID         -  HV6274
 HV6274  STATE/COUNTY-  MD/TALBOT
 HV6274  COUNTRY     -  US
 HV6274  USGS QUAD   -  CLAIBORNE (2016)
 HV6274
 HV6274                         *CURRENT SURVEY CONTROL
 HV6274  ______________________________________________________________________
 HV6274* NAD 83(1991) POSITION- 38 46 50.67708(N) 076 16 33.29960(W)   ADJUSTED
 HV6274* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6274  ______________________________________________________________________
 HV6274  GEOID HEIGHT    -        -34.205 (meters)                     GEOID18
 HV6274  LAPLACE CORR    -         -5.15  (seconds)                    DEFLEC18
 HV6274  HORZ ORDER      -  THIRD
 HV6274
 HV6274.The horizontal coordinates were established by classical geodetic methods
 HV6274.and adjusted by the National Geodetic Survey in January 1992.
 HV6274
 HV6274.The orthometric height was scaled from a topographic map.
 HV6274
 HV6274.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6274.GEOID18 height accuracy estimate available here.
 HV6274
 HV6274.Click photographs - Photos may exist for this station.
 HV6274
 HV6274.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6274
 HV6274. The following values were computed from the NAD 83(1991) position.
 HV6274
 HV6274;                    North         East     Units Scale Factor Converg.
 HV6274;SPC MD       -   123,916.533   462,914.140   MT  0.99995122   +0 27 16.1
 HV6274;SPC MD       -   406,549.49  1,518,744.14   sFT  0.99995122   +0 27 16.1
 HV6274;UTM  18      - 4,293,218.897   389,173.982   MT  0.99975125   -0 47 57.3
 HV6274
 HV6274!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6274!SPC MD       -   1.00000525  x   0.99995122  =   0.99995647
 HV6274!UTM  18      -   1.00000525  x   0.99975125  =   0.99975650
 HV6274
 HV6274:                Primary Azimuth Mark                     Grid Az
 HV6274:SPC MD       -  CLUMP                                    032 05 40.3
 HV6274:UTM  18      -  CLUMP                                    033 20 53.7
 HV6274
 HV6274_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8917393218(NAD 83)
 HV6274
 HV6274|---------------------------------------------------------------------|
 HV6274| PID    Reference Object                     Distance      Geod. Az  |
 HV6274|                                                           dddmmss.s |
 HV6274| HV6270 CLUMP                               APPROX. 0.5 KM 0323256.4 |
 HV6274| HV6245 PINK                                465.090 METERS 1014356.6 |
 HV6274| HV6244 MINK                                379.341 METERS 19657     |
 HV6274|---------------------------------------------------------------------|
 HV6274
 HV6274                          SUPERSEDED SURVEY CONTROL
 HV6274
 HV6274  NAD 83(1986)-  38 46 50.67326(N)    076 16 33.31382(W) AD(       ) 3
 HV6274  NAD 27      -  38 46 50.22500(N)    076 16 34.53300(W) AD(       ) 3
 HV6274  USSD        -  38 46 50.61600(N)    076 16 34.33100(W) AD(       ) 3
 HV6274
 HV6274.Superseded values are not recommended for survey control.
 HV6274
 HV6274.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6274.See file dsdata.pdf to determine how the superseded data were derived.
 HV6274
 HV6274_MARKER: H = DRILL HOLE
 HV6274_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6274_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6274_PROJECTION: FLUSH
 HV6274_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6274
 HV6274  HISTORY     - Date     Condition        Report By
 HV6274  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6274  HISTORY     - 1934     MARK NOT FOUND   CGS
 HV6274  HISTORY     - 1940     GOOD             CGS
 HV6274  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6274
 HV6274                          STATION DESCRIPTION
 HV6274
 HV6274'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6274'ON THE WESTERN SHORE OF THE UPPER PART OF HARRIS CREEK, ABOUT
 HV6274'3/4 MILE NNW OF THE TOWN OF BOZMAN, IN THE EDGE OF MARSH, IN NE
 HV6274'CORNER OF OLD APPLE ORCHARD, ABOUT 2 FEET ABOVE HIGH WATER, 11
 HV6274'YARDS NW OF SHORE, 23 YARDS W OF EXTREME END OF POINT, AND 80
 HV6274'YARDS SSE OF A HOUSE.  STATION IS MARKED BY A HOLE IN THE CENTER
 HV6274'OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT,
 HV6274'AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6274'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6274'COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE CENTER
 HV6274'OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW
 HV6274'THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6274'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE
 HV6274'IN 8-INCH APPLE TREE, 9.24 METERS (30.3 FEET) S 26 DEG 20
 HV6274'MIN W.  CENTER OF OLD GRISTMILL BURR PARTLY EMBEDDED IN GROUND AND
 HV6274'ABOUT 4 FEET IN DIAMETER, 4.87 METERS (15.98 FEET), N 56 DEG
 HV6274'55 MIN W.  NE CORNER OF HARRISON HOUSE, 80 YARDS, N 25 DEG 36 MIN W.
 HV6274'N CHIMNEY OF MILLERS HOUSE, 1/2 MILE, N 62 DEG 47 MIN E.  S
 HV6274'CHIMNEY OF HOUSE, 3/4 MILE, N 83 DEG 48 MIN E.  N CHIMNEY OF
 HV6274'HOUSE, 3/8 MILE, S 88 DEG 57 MIN E.  CHIMNEY OF HOUSE, 3/8
 HV6274'MILE, S 39 DEG 30 MIN E.  CHIMNEY OF SMALL HOUSE, 7/8 MILE, S 26 DEG
 HV6274'32 MIN E.  N GABLE OF BARN, 3/4 MILE, S 10 DEG 08 MIN E.
 HV6274
 HV6274                          STATION RECOVERY (1934)
 HV6274
 HV6274'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 HV6274'REFERENCE MARKS HAVE BEEN CHANGED WITH POSSIBLE EXCEPTION
 HV6274'OF HOUSE.  MEASUREMENT TAKEN IN DIRECTION INDICATED WOULD BRING
 HV6274'STATION IN RATHER DENSE BRUSH.  COULD POSSIBLY BE FOUND BY
 HV6274'CUTTING AWAY BRUSH.
 HV6274
 HV6274                          STATION RECOVERY (1940)
 HV6274
 HV6274'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6274'STATION MARK RECOVERED, FLUSH WITH THE SURFACE OF GROUND AND
 HV6274'IN GOOD CONDITION.  ON THE WESTERN SHORE OF THE UPPER PART OF
 HV6274'HARRIS CREEK, ABOUT 3/4 MILE NNW OF THE TOWN OF BOZMAN, IN EDGE
 HV6274'OF MARSH AT NE CORNER OF CULTIVATED FIELD, ABOUT 2 FEET ABOVE
 HV6274'HIGH WATER, 11 YARDS NW OF SHORE, 17 YARDS W OF EXTREME POINT,
 HV6274'AND 80 YARDS SSE OF AN ABANDONED HOUSE.
 HV6274
 HV6274                          STATION RECOVERY (1961)
 HV6274
 HV6274'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6274'STATION NOT RECOVERED AFTER A CAREFUL SEARCH OF THE AREA.  THE
 HV6274'STATION MAY STILL BE INTACT BUT WILL BE EXTREMELY DIFFICULT TO
 HV6274'FIND DUE TO CHANGES IN CULTURAL FEATURES IN THE AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7236 ***********************************************************************
 HV7236  DESIGNATION -  HARRISON
 HV7236  PID         -  HV7236
 HV7236  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7236  COUNTRY     -  US
 HV7236  USGS QUAD   -  BOWIE (2016)
 HV7236
 HV7236                         *CURRENT SURVEY CONTROL
 HV7236  ______________________________________________________________________
 HV7236* NAD 83(1991) POSITION- 38 53 22.26869(N) 076 43 09.41988(W)   ADJUSTED
 HV7236* NAVD 88 ORTHO HEIGHT -    50.    (meters)      164.    (feet) SCALED
 HV7236  ______________________________________________________________________
 HV7236  GEOID HEIGHT    -        -32.875 (meters)                     GEOID18
 HV7236  LAPLACE CORR    -         -6.00  (seconds)                    DEFLEC18
 HV7236  HORZ ORDER      -  FIRST
 HV7236
 HV7236.The horizontal coordinates were established by classical geodetic methods
 HV7236.and adjusted by the National Geodetic Survey in January 1992.
 HV7236
 HV7236.The orthometric height was scaled from a topographic map.
 HV7236
 HV7236.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7236.GEOID18 height accuracy estimate available here.
 HV7236
 HV7236.Click photographs - Photos may exist for this station.
 HV7236
 HV7236.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7236
 HV7236. The following values were computed from the NAD 83(1991) position.
 HV7236
 HV7236;                    North         East     Units Scale Factor Converg.
 HV7236;SPC MD       -   135,779.281   424,353.991   MT  0.99994988   +0 10 34.3
 HV7236;SPC MD       -   445,469.19  1,392,234.72   sFT  0.99994988   +0 10 34.3
 HV7236;UTM  18      - 4,305,921.315   350,888.210   MT  0.99987379   -1 04 46.6
 HV7236
 HV7236!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7236!SPC MD       -   0.99999735  x   0.99994988  =   0.99994723
 HV7236!UTM  18      -   0.99999735  x   0.99987379  =   0.99987114
 HV7236
 HV7236:                Primary Azimuth Mark                     Grid Az
 HV7236:SPC MD       -  HARRISON RM 1 AZIMUTH                    101 06 30.7
 HV7236:UTM  18      -  HARRISON RM 1 AZIMUTH                    102 21 51.6
 HV7236
 HV7236_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5088805921(NAD 83)
 HV7236
 HV7236|---------------------------------------------------------------------|
 HV7236| PID    Reference Object                     Distance      Geod. Az  |
 HV7236|                                                           dddmmss.s |
 HV7236| HV6393 ANNAPOLIS ST CAPITOL BLDG DOME      APPROX.22.1 KM 0632102.7 |
 HV7236| CX2853 HARRISON RM 1 AZIMUTH                              1011705.0 |
 HV7236| CX2854 HARRISON RM 2                        32.583 METERS 14157     |
 HV7236| CX2856 HARRISON RM 4                        30.946 METERS 26113     |
 HV7236| CX2855 HARRISON RM 3                        48.860 METERS 34612     |
 HV7236|---------------------------------------------------------------------|
 HV7236
 HV7236                          SUPERSEDED SURVEY CONTROL
 HV7236
 HV7236  NAD 83(1986)-  38 53 22.26590(N)    076 43 09.43195(W) AD(       ) 1
 HV7236  NAD 27      -  38 53 21.86174(N)    076 43 10.54768(W) AD(       ) 1
 HV7236
 HV7236.Superseded values are not recommended for survey control.
 HV7236
 HV7236.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7236.See file dsdata.pdf to determine how the superseded data were derived.
 HV7236
 HV7236_MARKER: DS = TRIANGULATION STATION DISK
 HV7236_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7236_STAMPING: HARRISON 1933
 HV7236_MARK LOGO: CGS
 HV7236_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7236+STABILITY: SURFACE MOTION
 HV7236
 HV7236  HISTORY     - Date     Condition        Report By
 HV7236  HISTORY     - 1933     MONUMENTED       CGS
 HV7236  HISTORY     - 1943     GOOD             CGS
 HV7236  HISTORY     - 1943     GOOD             CGS
 HV7236  HISTORY     - 1952     GOOD             CGS
 HV7236  HISTORY     - 1958     GOOD             MDBCSM
 HV7236
 HV7236                          STATION DESCRIPTION
 HV7236
 HV7236'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 HV7236'THE STATION IS ABOUT 6 MILES NORTHEAST OF UPPER MARLBORO, ABOUT 6
 HV7236'MILES EAST-SOUTHEAST OF LARGO, AND 0.45 MILE SOUTH OF JUNCTION OF
 HV7236'CENTRAL AVENUE HIGHWAY AND CRANE HIGHWAY (RT. 3), ON PROPERTY
 HV7236'OWNED BY MR. G. B. HARRISON.  IT IS ON NORTH SLOPE OF HILL, IN
 HV7236'NORTH EDGE OF MR. HARRISONS YARD, 71 FT. EAST OF CENTERLINE OF
 HV7236'RT. 3, 46.5 FT. NORTH OF NORTH SIDE OF HOUSE, 5 FT. SOUTH OF
 HV7236'GARDEN FENCE, AND 15 FT. WSW OF SOUTHEAST CORNER OF GARDEN.
 HV7236'
 HV7236'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 HV7236'DISKS SET IN CONCRETE.
 HV7236'
 HV7236'R.M. NO. 1 IS ON WEST SLOPE OF ADJOINING HILL, 25 YARDS WEST OF
 HV7236'WEST SIDE OF A BARN WITH CONCRETE BASE, 24 YARDS EAST OF A LARGE
 HV7236'OAK THAT STANDS AT A GATE, 22 YARDS WEST OF TWO OAKS, 6 YARDS
 HV7236'NORTH OF CENTERLINE OF FARM ROAD, IN WIRE FENCE LINE.  IT IS
 HV7236'VISIBLE FROM THE GROUND AT THE STATION.
 HV7236'
 HV7236'R.M. NO. 2 IS SE OF STATION BY A GATE POST, 15 YARDS EAST AND 1
 HV7236'FOOT SOUTH OF SOUTHEAST CORNER OF HARRISONS HOUSE, AND 3 YARDS
 HV7236'NORTH OF NORTHEAST CORNER OF AN OUT-HOUSE.
 HV7236'
 HV7236'R.M. NO. 3 IS NNE OF STATION, JUST OUTSIDE OF WEST GARDEN FENCE, 6
 HV7236'YARDS EAST OF CENTERLINE OF RT. 3, 4 YARDS SOUTH OF NORTHWEST
 HV7236'CORNER OF GARDEN, AND 10 YARDS SOUTH OF CROSSROADS.
 HV7236'
 HV7236'ALL MARKS ARE ABOVE GROUND
 HV7236'
 HV7236'HEIGHT OF LIGHT ABOVE STATION MARK 33 METERS.
 HV7236
 HV7236                          STATION RECOVERY (1943)
 HV7236
 HV7236'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7236'THE STATION AND ALL MARKS RECOVERED AND IN GOOD CONDITION.  A
 HV7236'PEACH TREE HAD GROWN UP OVER THE STATION WHICH MADE IT NECESSARY
 HV7236'TO OCCUPY ECCENTRIC.  A NEW REFERENCE MARK (REFERENCE MARK NO. 4)
 HV7236'WAS ESTABLISHED FOR THIS PURPOSE.  THE DIRECTIONS TO THE REFERENCE
 HV7236'MARKS WERE MEASURED FROM A SET UP OVER THE TRUE STATION.  THE
 HV7236'AZIMUTH MARK HOWEVER WAS OBSTRUCTED BY TREES AND WAS NOT CHECKED
 HV7236'FROM THIS POINT, AS A CONSEQUENCE THE DIRECTION SHOWN TO IT IS THE
 HV7236'OLD DIRECTION.  FOLLOWING IS A COMPLETE NEW DESCRIPTION--
 HV7236'
 HV7236'THE STATION IS LOCATED 6 MILES NORTHEAST OF UPPER MARLBORO ON THE
 HV7236'EAST SIDE OF U.S. HIGHWAY 301 AND ON PROPERTY OWNED BY G. B.
 HV7236'HARRISON.  IT IS 71 FEET EAST OF THE CENTER OF THE HIGHWAY, 46
 HV7236'FEET NORTH OF THE NORTH SIDE OF THE HOUSE, 2 FEET NORTH OF A FENCE
 HV7236'AND 6 FEET SOUTHEAST OF A SMALL GATE.  IT PROJECTS 4 INCHES AND
 HV7236'THE DISK IS STAMPED HARRISON 1933.
 HV7236'
 HV7236'REFERENCE MARK NO. 2 IS SOUTHEAST OF THE STATION AT THE NORTHEAST
 HV7236'CORNER OF A SMALL BUILDING.  IT PROJECTS 6 INCHES AND THE DISK IS
 HV7236'STAMPED HARRISON NO. 2 1933.
 HV7236'
 HV7236'REFERENCE MARK NO. 3 IS NORTH NORTHEAST OF THE STATION, 20 FEET
 HV7236'EAST OF THE CENTER OF THE HIGHWAY.  IT PROJECTS 4 INCHES AND THE
 HV7236'DISK IS STAMPED HARRISON NO. 3 1933.
 HV7236'
 HV7236'REFERENCE MARK NO. 4 WHICH WAS USED FOR THE ECCENTRIC OCCUPATION
 HV7236'IS LOCATED WEST SOUTHWEST OF THE STATION, 15 FEET WEST OF THE
 HV7236'SHOULDER OF THE ROAD CUT AND ABOUT 50 FEET NORTH OF THE HIGHEST
 HV7236'POINT OF THE HILL.  IT PROJECTS 10 INCHES AND THE DISK IS STAMPED
 HV7236'HARRISON NO. 4 1943.
 HV7236'
 HV7236'REFERENCE MARK NO. 1, USED AS THE AZIMUTH MARK IS LOCATED ABOUT
 HV7236'1/4 MILE EAST OF THE STATION ON PROPERTY OWNED BY J. C. JONES. IT
 HV7236'IS 25 YARDS WEST OF A TOBACCO BARN AND 18 FEET NORTH OF THE
 HV7236'CENTER OF A FARM ROAD.  IT PROJECTS 4 INCHES AND THE DISK IS
 HV7236'STAMPED HARRISON NO. 1 1933.  TO REACH THE AZIMUTH MARK FROM THE
 HV7236'STATION GO SOUTH ON THE HIGHWAY FOR 0.5 MILE TO A GRAVEL ROAD
 HV7236'SHARP LEFT.  TURN LEFT ON GRAVEL ROAD AND GO 0.6 MILE TO A
 HV7236'T-INTERSECTION.  TURN LEFT AND GO 0.15 MILE TO THE AZIMUTH MARK ON
 HV7236'THE RIGHT AS DESCRIBED.
 HV7236'
 HV7236'TO REACH THE STATION FROM THE POST OFFICE IN MARLBORO GO
 HV7236'NORTHERLY ON U.S. HIGHWAY 301 FOR 1.4 MILES TO ITS JUNCTION WITH
 HV7236'STATE HIGHWAY 4.  TURN LEFT ON U.S. HIGHWAY 301 FOR 4.65 MILES TO
 HV7236'THE HARRISON HOME AND THE STATION ON THE RIGHT AS DESCRIBED.
 HV7236'
 HV7236'A 10-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT WYVILLE 1933.
 HV7236'
 HV7236'A 10-FOOT STAND WILL SEE A 100-FOOT LIGHT AT MELLWOOD.
 HV7236'
 HV7236'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT BEANE 1933.
 HV7236
 HV7236                          STATION RECOVERY (1943)
 HV7236
 HV7236'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7236'STATION AND ALL REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.
 HV7236'THE AZIMUTH MARK, R.M. 1, IS NOT VISIBLE FROM THE GROUND AT EITHER
 HV7236'R.M. 4 OR THE OLD STATION.  FOR THIS REASON THE OLD STATION WAS
 HV7236'OCCUPIED AND A BACKSIGHT TAKEN FROM R.M. 3
 HV7236'
 HV7236'THE TREE REFERRED TO AS PEACH TREE IS AN APPLE TREE.  OTHER THAN
 HV7236'THE ABOVE DISCREPANCY, THE DESCRIPTION IS ADEQUATE AND COMPLETE.
 HV7236
 HV7236                          STATION RECOVERY (1952)
 HV7236
 HV7236'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (IWS)
 HV7236'STATION AND REFERENCE MARKS WERE RECOVERED AS DESCRIBED WITH THE
 HV7236'FOLLOWING EXCEPTIONS--
 HV7236'
 HV7236'THE HIGHWAY 3, THAT IS MENTIONED IN THE DESCRIPTION, IS NOW
 HV7236'HIGHWAY 301.
 HV7236'
 HV7236'REFERENCE MARK 4, WHICH WAS ESTABLISHED AT THIS STATION IN 1943
 HV7236'AND WAS USED AS A POINT OF ECCENTRIC OCCUPATION OF THE STATION,
 HV7236'WAS IN THE WAY OF CONSTRUCTION AT THIS DATE AND WAS THEREFORE REMOVED.
 HV7236
 HV7236                          STATION RECOVERY (1958)
 HV7236
 HV7236'RECOVERY NOTE BY MD BUR SURV AND MAPS 1958 (RDH)
 HV7236'STATION MARK STAMPED HARRISON 1933 AND REFERENCE MARK 2 STAMPED
 HV7236'HARRISON NO 2 1933 HAVE BEEN DESTROYED.
 HV7236'
 HV7236'A SEARCH FOR REFERENCE MARKS 1 AND 3 WAS NOT MADE.
 HV7236'
 HV7236'STATION MARK AND REFERENCE MARK 2 RECEIVED BY WASHINGTON OFFICE ON
 HV7236'1 OCTOBER 1958.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4654 ***********************************************************************
 AB4654  DESIGNATION -  HARRISON
 AB4654  PID         -  AB4654
 AB4654  STATE/COUNTY-  MD/CARROLL
 AB4654  COUNTRY     -  US
 AB4654  USGS QUAD   -  WINFIELD (2016)
 AB4654
 AB4654                         *CURRENT SURVEY CONTROL
 AB4654  ______________________________________________________________________
 AB4654* NAD 83(2011) POSITION- 39 23 49.13184(N) 077 03 28.23609(W)   ADJUSTED
 AB4654* NAD 83(2011) ELLIP HT-   201.717 (meters)        (06/27/12)   ADJUSTED
 AB4654* NAD 83(2011) EPOCH   -  2010.00
 AB4654* NAVD 88 ORTHO HEIGHT -   233.6   (meters)      766.    (feet) GPS OBS
 AB4654  ______________________________________________________________________
 AB4654  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4654  GEOID HEIGHT    -        -31.917 (meters)                     GEOID99
 AB4654  GEOID HEIGHT    -        -31.915 (meters)                     GEOID18
 AB4654  NAD 83(2011) X  -  1,105,419.299 (meters)                     COMP
 AB4654  NAD 83(2011) Y  - -4,810,247.613 (meters)                     COMP
 AB4654  NAD 83(2011) Z  -  4,026,599.494 (meters)                     COMP
 AB4654  LAPLACE CORR    -          0.30  (seconds)                    DEFLEC18
 AB4654
 AB4654  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4654  Standards:
 AB4654         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4654            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4654  -------------------------------------------------------------------
 AB4654  NETWORK    1.42   3.04           0.58   0.58   1.55     -0.05090014
 AB4654  -------------------------------------------------------------------
 AB4654  Click here for local accuracies and other accuracy information.
 AB4654
 AB4654.The horizontal coordinates were established by GPS observations
 AB4654.and adjusted by the National Geodetic Survey in June 2012.
 AB4654
 AB4654.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4654.been affixed to the stable North American tectonic plate. See 
 AB4654.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4654
 AB4654.The horizontal coordinates are valid at the epoch date displayed above
 AB4654.which is a decimal equivalence of Year/Month/Day.
 AB4654
 AB4654.The orthometric height was determined by GPS observations and a
 AB4654.high-resolution geoid model.
 AB4654
 AB4654.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4654.GEOID18 height accuracy estimate available here.
 AB4654
 AB4654.Click photographs - Photos may exist for this station.
 AB4654
 AB4654.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4654
 AB4654.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4654
 AB4654.The ellipsoidal height was determined by GPS observations
 AB4654.and is referenced to NAD 83.
 AB4654
 AB4654. The following values were computed from the NAD 83(2011) position.
 AB4654
 AB4654;                    North         East     Units Scale Factor Converg.
 AB4654;SPC MD       -   192,078.911   395,017.403   MT  0.99999116   -0 02 10.7
 AB4654;SPC MD       -   630,178.89  1,295,986.26   sFT  0.99999116   -0 02 10.7
 AB4654;UTM  18      - 4,362,851.671   322,800.261   MT  0.99998662   -1 18 23.2
 AB4654
 AB4654!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4654!SPC MD       -   0.99996835  x   0.99999116  =   0.99995951
 AB4654!UTM  18      -   0.99996835  x   0.99998662  =   0.99995497
 AB4654
 AB4654:                Primary Azimuth Mark                     Grid Az
 AB4654:SPC MD       -  HARRISON AZ MK                           015 18 42.6
 AB4654:UTM  18      -  HARRISON AZ MK                           016 34 55.1
 AB4654
 AB4654_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2280062851(NAD 83)
 AB4654
 AB4654|---------------------------------------------------------------------|
 AB4654| PID    Reference Object                     Distance      Geod. Az  |
 AB4654|                                                           dddmmss.s |
 AB4654| AB4622 HARRISON AZ MK                      APPROX. 1.0 KM 0151631.9 |
 AB4654|---------------------------------------------------------------------|
 AB4654
 AB4654                          SUPERSEDED SURVEY CONTROL
 AB4654
 AB4654  NAD 83(2007)-  39 23 49.13204(N)    077 03 28.23705(W) AD(2002.00) 0
 AB4654  ELLIP H (02/10/07)  201.743  (m)                       GP(2002.00)    
 AB4654  ELLIP H (08/30/02)  201.736  (m)                       GP(       ) 4 2
 AB4654  NAD 83(1991)-  39 23 49.13199(N)    077 03 28.23705(W) AD(       ) 1
 AB4654  ELLIP H (07/03/96)  201.628  (m)                       GP(       ) 1 1
 AB4654  NAVD 88 (07/03/96)  233.6    (m)  GEOID93  model used  GPS OBS        
 AB4654
 AB4654.Superseded values are not recommended for survey control.
 AB4654
 AB4654.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4654.See file dsdata.pdf to determine how the superseded data were derived.
 AB4654
 AB4654_MARKER: DD = SURVEY DISK
 AB4654_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4654_STAMPING: HARRISON 1995
 AB4654_MARK LOGO: MD-013
 AB4654_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4654_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4654+STABILITY: SURFACE MOTION
 AB4654_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4654+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4654
 AB4654  HISTORY     - Date     Condition        Report By
 AB4654  HISTORY     - 1995     MONUMENTED       MD-013
 AB4654
 AB4654                          STATION DESCRIPTION
 AB4654
 AB4654'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4654'STATION IS LOCATED ABOUT 11 MI (17.7 KM) SOUTH OF WESTMINSTER, 6.5 MI
 AB4654'(10.5 KM) NORTHEAST OF MOUNT AIRY AND ABOUT 6.0 MI (9.7 KM) NORTHWEST
 AB4654'OF SYKSEVILLE. TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 97
 AB4654'(OLD WASHINGTON ROAD) AND MD ROUTE 26 (LIBERTY ROAD) GO WEST ON MD
 AB4654'ROUTE 26 FOR 3 MI (4.8 KM) TO THE INTERSECTION WITH WOODBINE ROAD.
 AB4654'TURN LEFT AND GO SOUTH ON WOODBINE ROAD FOR 3.5 MI (5.6 KM) TO THE
 AB4654'STATION ON THE RIGHT. STATION IS ALSO 0.8 MI (1.3 KM) SOUTH OF THE
 AB4654'INTERSECTION OF GILLIS ROAD AND WOODBINE ROAD AND 0.75 MI (1.21 KM)
 AB4654'NORTH OF THE INTERSECTION OF WOODBINE ROAD AND GILLIS FALLS ROAD.
 AB4654'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AB4654'SET FLUSH WITH THE GROUND. STATION IS ON THE WEST SIDE OF WOODBINE
 AB4654'ROAD AND SOUTH OF A PAVED DRIVE LEADING TO HOUSE NO. 6430. IT IS 14.3
 AB4654'FT (4.4 M) SOUTH OF THE CENTERLINE OF THE DRIVEWAY AND 6.5 FT (2.0 M)
 AB4654'SOUTHWEST OF POWER POLE NO.385815.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7237 ***********************************************************************
 HV7237  DESIGNATION -  HARRISON 2
 HV7237  PID         -  HV7237
 HV7237  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7237  COUNTRY     -  US
 HV7237  USGS QUAD   -  BOWIE (2016)
 HV7237
 HV7237                         *CURRENT SURVEY CONTROL
 HV7237  ______________________________________________________________________
 HV7237* NAD 83(1991) POSITION- 38 53 24.34882(N) 076 43 07.58945(W)   ADJUSTED
 HV7237* NAD 83(1991) ELLIP HT-    18.345 (meters)        (01/27/92)   ADJUSTED
 HV7237* NAVD 88 ORTHO HEIGHT -    51.1   (meters)      168.    (feet) VERTCON3
 HV7237  ______________________________________________________________________
 HV7237  GEOID HEIGHT    -        -32.876 (meters)                     GEOID18
 HV7237  NAD 83(1991) X  -  1,141,994.429 (meters)                     COMP
 HV7237  NAD 83(1991) Y  - -4,838,057.111 (meters)                     COMP
 HV7237  NAD 83(1991) Z  -  3,982,839.355 (meters)                     COMP
 HV7237  LAPLACE CORR    -         -6.00  (seconds)                    DEFLEC18
 HV7237  HORZ ORDER      -  FIRST
 HV7237  ELLP ORDER      -  FOURTH    CLASS I
 HV7237
 HV7237.The horizontal coordinates were established by classical geodetic methods
 HV7237.and adjusted by the National Geodetic Survey in January 1992.
 HV7237
 HV7237.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7237.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7237
 HV7237.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7237.GEOID18 height accuracy estimate available here.
 HV7237
 HV7237.Click photographs - Photos may exist for this station.
 HV7237
 HV7237.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV7237
 HV7237.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7237
 HV7237.The ellipsoidal height was determined by GPS observations
 HV7237.and is referenced to NAD 83.
 HV7237
 HV7237. The following values were computed from the NAD 83(1991) position.
 HV7237
 HV7237;                    North         East     Units Scale Factor Converg.
 HV7237;SPC MD       -   135,843.559   424,397.905   MT  0.99994988   +0 10 35.4
 HV7237;SPC MD       -   445,680.08  1,392,378.79   sFT  0.99994988   +0 10 35.4
 HV7237;UTM  18      - 4,305,984.610   350,933.519   MT  0.99987363   -1 04 45.5
 HV7237
 HV7237!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7237!SPC MD       -   0.99999712  x   0.99994988  =   0.99994700
 HV7237!UTM  18      -   0.99999712  x   0.99987363  =   0.99987075
 HV7237
 HV7237:                Primary Azimuth Mark                     Grid Az
 HV7237:SPC MD       -  HARRISON 2 AZ MK RESET                   003 24 41.0
 HV7237:UTM  18      -  HARRISON 2 AZ MK RESET                   004 40 01.9
 HV7237
 HV7237_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5093305984(NAD 83)
 HV7237
 HV7237|---------------------------------------------------------------------|
 HV7237| PID    Reference Object                     Distance      Geod. Az  |
 HV7237|                                                           dddmmss.s |
 HV7237| CX2857 HARRISON 2 AZ MK                                   0014414.1 |
 HV7237| HV7253 HARRISON 2 AZ MK RESET              APPROX. 0.9 KM 0033516.4 |
 HV7237| HV7232 MEADOWS VILLAGE WSSC TANK           APPROX. 5.8 KM 1824500.8 |
 HV7237| CX2858 HARRISON 2 RM 4                      26.205 METERS 22445     |
 HV7237| CX2859 HARRISON 2 RM 5                      39.834 METERS 33612     |
 HV7237|---------------------------------------------------------------------|
 HV7237
 HV7237                          SUPERSEDED SURVEY CONTROL
 HV7237
 HV7237  NAD 83(1986)-  38 53 24.34518(N)    076 43 07.60140(W) AD(       ) 1
 HV7237  NAD 27      -  38 53 23.94208(N)    076 43 08.71744(W) AD(       ) 1
 HV7237  NGVD 29 (07/19/86)   51.3    (m)          168.     (f) VERT ANG       
 HV7237
 HV7237.Superseded values are not recommended for survey control.
 HV7237
 HV7237.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7237.See file dsdata.pdf to determine how the superseded data were derived.
 HV7237
 HV7237_MARKER: DS = TRIANGULATION STATION DISK
 HV7237_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7237_STAMPING: HARRISON 2 1970
 HV7237_MARK LOGO: CGS
 HV7237_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7237+STABILITY: SURFACE MOTION
 HV7237_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7237+SATELLITE: SATELLITE OBSERVATIONS - February 05, 1986
 HV7237
 HV7237  HISTORY     - Date     Condition        Report By
 HV7237  HISTORY     - 1970     MONUMENTED       NGS
 HV7237  HISTORY     - 19860205 GOOD
 HV7237
 HV7237                          STATION DESCRIPTION
 HV7237
 HV7237'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7237'THE STATION IS ABOUT 5-1/2 MILES NORTH OF UPPER MARLBORO, 2-1/4
 HV7237'MILES WEST OF THE PRINCE GEORGES-ANNE ARUNDEL COUNTY LINE, 2-1/4
 HV7237'MILES WEST OF THE PATUXENT RIVER, 1/2 MILE SOUTH OF THE JUNCTION
 HV7237'OF STATE HIGHWAY 214 AND U.S. HIGHWAY 301, AND ON PROPERTY OF
 HV7237'EDWARD B. DANENHOWER, P.O. BOX 225, UPPER MARLBORO, 20870.
 HV7237'
 HV7237'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 214 AND
 HV7237'U.S. HIGHWAY 301, 6 MILES NORTH OF UPPER MARLBORO, GO SOUTH ON
 HV7237'U.S. HIGHWAY 301 FOR 0.7 MILE TO A SIDE ROAD ON THE LEFT.  TURN
 HV7237'LEFT, CROSSING OVER TO THE NORTH BOUND LANE, AND GO NORTH ON U.S.
 HV7237'HIGHWAY 301 FOR 0.2 MILE TO A SIDE ROAD ON THE RIGHT.  (TO REACH
 HV7237'THE AZIMUTH MARK FROM THIS POINT, CONTINUE NORTH ON U.S. HIGHWAY
 HV7237'301 FOR 0.4 MILE TO AN OVERPASS AND THE AZIMUTH MARK SET IN THE
 HV7237'NORTH SIDE OF AND THE WEST END OF THE EAST BOUND LANE OF STATE
 HV7237'HIGHWAY 214.) TURN RIGHT AND GO EAST ON GRAVELLED ROAD FOR 0.2
 HV7237'MILE TO A FRAME HOUSE.  TURN LEFT AND GO WESTERLY ACROSS PASTURE
 HV7237'FOR 0.2 MILE TO THE HIGHEST POINT OF THE HILL AND THE STATION.
 HV7237'
 HV7237'THE STATION MARK IS A STANDARD DISK, STAMPED HARRISON 2 1970, SET
 HV7237'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7237'IS RECESSED IN THE GROUND 18 INCHES.  IT IS 130.0 FEET SOUTHEAST
 HV7237'OF A WITNESS POST, 87.0 FEET NORTHEAST OF A TELEPHONE POLE
 HV7237'NUMBERED P4968, AND 64.0 FEET NORTH OF A GRAVELLED ROAD.  THE
 HV7237'UNDERGROUND MARK IS SET 42 INCHES BELOW THE SURFACE OF THE GROUND.
 HV7237'
 HV7237'REFERENCE MARK 4 IS A STANDARD DISK, STAMPED HARRISON 2 NO 4 1970,
 HV7237'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7237'THAT PROJECTS 2 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 74
 HV7237'FEET EAST OF THE CENTERLINE OF U.S. HIGHWAY 301, 31 FEET NORTH OF
 HV7237'A GRAVELLED ROAD, 1.9 FEET NORTH OF A TELEPHONE POLE NUMBERED
 HV7237'P4968, AND IS ABOUT 4 FEET LOWER THAN THE STATION.
 HV7237'
 HV7237'REFERENCE MARK 5 IS A STANDARD DISK, STAMPED HARRISON 2 NO 5 1970,
 HV7237'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER,
 HV7237'THAT PROJECTS 1 INCH ABOVE THE SURFACE OF THE GROUND.  IT IS 71.0
 HV7237'FEET EAST OF THE CENTERLINE OF U.S. HIGHWAY 301, 11.0 FEET EAST OF
 HV7237'A POWERLINE POLE NUMBERED 337071, 1.6 FEET SOUTH OF A WITNESS
 HV7237'POST, AND IS ABOUT 6 FEET LOWER THAN THE STATION.
 HV7237'
 HV7237'AZIMUTH MARK IS A STANDARD DISK, STAMPED HARRISON 2 1970,
 HV7237'CEMENTED IN A DRILL HOLE IN THE BRIDGE ABUTMENT FLUSH WITH THE
 HV7237'CONCRETE RAIL ON THE NORTH SIDE OF THE EAST BOUND OVERPASS.  IT
 HV7237'IS 17 FEET NORTH OF THE CENTERLINE OF EAST BOUND LANE OF STATE
 HV7237'HIGHWAY 214, 2.7 FEET EAST OF THE WEST END OF THE ABUTMENT.
 HV7237'
 HV7237'THE DISTANCE BETWEEN REFERENCE MARKS 4 AND 5 WAS NOT MEASURED DUE
 HV7237'TO OBSTRUCTION.
 HV7237
 HV7237                          STATION RECOVERY (1986)
 HV7237
 HV7237'RECOVERED 1986
 HV7237'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7253 ***********************************************************************
 HV7253  DESIGNATION -  HARRISON 2 AZ MK RESET
 HV7253  PID         -  HV7253
 HV7253  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7253  COUNTRY     -  US
 HV7253  USGS QUAD   -  BOWIE (2016)
 HV7253
 HV7253                         *CURRENT SURVEY CONTROL
 HV7253  ______________________________________________________________________
 HV7253* NAD 83(1991) POSITION- 38 53 54.21944(N) 076 43 05.19264(W)   NO CHECK
 HV7253* NAVD 88 ORTHO HEIGHT -    39.1   (meters)      128.    (feet) VERTCON3
 HV7253  ______________________________________________________________________
 HV7253  GEOID HEIGHT    -        -32.863 (meters)                     GEOID18
 HV7253  LAPLACE CORR    -         -5.94  (seconds)                    DEFLEC18
 HV7253  HORZ ORDER      -  THIRD
 HV7253
 HV7253.The horizontal coordinates were established by classical geodetic methods
 HV7253.and adjusted by the National Geodetic Survey in January 1992.
 HV7253
 HV7253.No horizontal observational check was made to the station.
 HV7253
 HV7253.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7253.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7253
 HV7253.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7253.GEOID18 height accuracy estimate available here.
 HV7253
 HV7253.Click photographs - Photos may exist for this station.
 HV7253
 HV7253.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7253
 HV7253. The following values were computed from the NAD 83(1991) position.
 HV7253
 HV7253;                    North         East     Units Scale Factor Converg.
 HV7253;SPC MD       -   136,764.809   424,452.821   MT  0.99994993   +0 10 36.9
 HV7253;SPC MD       -   448,702.54  1,392,558.96   sFT  0.99994993   +0 10 36.9
 HV7253;UTM  18      - 4,306,904.364   351,008.607   MT  0.99987335   -1 04 44.7
 HV7253
 HV7253!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7253!SPC MD       -   0.99999903  x   0.99994993  =   0.99994896
 HV7253!UTM  18      -   0.99999903  x   0.99987335  =   0.99987238
 HV7253
 HV7253_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5100806904(NAD 83)
 HV7253
 HV7253                          SUPERSEDED SURVEY CONTROL
 HV7253
 HV7253  NAD 83(1986)-  38 53 54.21580(N)    076 43 05.20460(W) AD(       ) 3
 HV7253  NAD 27      -  38 53 53.81310(N)    076 43 06.31963(W) AD(       ) 3
 HV7253  NGVD 29 (07/19/86)   39.3    (m)          129.     (f) VERT ANG       
 HV7253
 HV7253.Superseded values are not recommended for survey control.
 HV7253
 HV7253.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7253.See file dsdata.pdf to determine how the superseded data were derived.
 HV7253
 HV7253_MARKER: DZ = AZIMUTH MARK DISK
 HV7253_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV7253_SP_SET: ABUTMENT
 HV7253_STAMPING: HARRISON 2 1970 1979
 HV7253_MARK LOGO: NGS
 HV7253_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV7253
 HV7253  HISTORY     - Date     Condition        Report By
 HV7253  HISTORY     - 1979     MONUMENTED       NGS
 HV7253
 HV7253                          STATION DESCRIPTION
 HV7253
 HV7253'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 HV7253'THE MARK IS LOCATED ABOUT 8.5 MI (13.7 KM) WEST OF SOUTH RIVER,
 HV7253'7.8 MI (12.6 KM) NORTH-NORTHWEST OF BRISTOL AND 5.9 MI (9.6 KM)
 HV7253'NORTH-NORTHEAST OF UPPER MARLBORO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4622 ***********************************************************************
 AB4622  DESIGNATION -  HARRISON AZ MK
 AB4622  PID         -  AB4622
 AB4622  STATE/COUNTY-  MD/CARROLL
 AB4622  COUNTRY     -  US
 AB4622  USGS QUAD   -  WINFIELD (2016)
 AB4622
 AB4622                         *CURRENT SURVEY CONTROL
 AB4622  ______________________________________________________________________
 AB4622* NAD 83(2011) POSITION- 39 24 20.37352(N) 077 03 17.23755(W)   ADJUSTED
 AB4622* NAD 83(2011) ELLIP HT-   217.083 (meters)        (06/27/12)   ADJUSTED
 AB4622* NAD 83(2011) EPOCH   -  2010.00
 AB4622* NAVD 88 ORTHO HEIGHT -   249.0   (meters)      817.    (feet) GPS OBS
 AB4622  ______________________________________________________________________
 AB4622  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4622  GEOID HEIGHT    -        -31.928 (meters)                     GEOID99
 AB4622  GEOID HEIGHT    -        -31.926 (meters)                     GEOID18
 AB4622  NAD 83(2011) X  -  1,105,541.443 (meters)                     COMP
 AB4622  NAD 83(2011) Y  - -4,809,604.187 (meters)                     COMP
 AB4622  NAD 83(2011) Z  -  4,027,353.776 (meters)                     COMP
 AB4622  LAPLACE CORR    -          0.43  (seconds)                    DEFLEC18
 AB4622
 AB4622  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4622  Standards:
 AB4622         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4622            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4622  -------------------------------------------------------------------
 AB4622  NETWORK    1.27   2.37           0.54   0.50   1.21      0.04993158
 AB4622  -------------------------------------------------------------------
 AB4622  Click here for local accuracies and other accuracy information.
 AB4622
 AB4622.The horizontal coordinates were established by GPS observations
 AB4622.and adjusted by the National Geodetic Survey in June 2012.
 AB4622
 AB4622.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4622.been affixed to the stable North American tectonic plate. See 
 AB4622.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4622
 AB4622.The horizontal coordinates are valid at the epoch date displayed above
 AB4622.which is a decimal equivalence of Year/Month/Day.
 AB4622
 AB4622.The orthometric height was determined by GPS observations and a
 AB4622.high-resolution geoid model.
 AB4622
 AB4622.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4622.GEOID18 height accuracy estimate available here.
 AB4622
 AB4622.Click photographs - Photos may exist for this station.
 AB4622
 AB4622.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4622
 AB4622.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4622
 AB4622.The ellipsoidal height was determined by GPS observations
 AB4622.and is referenced to NAD 83.
 AB4622
 AB4622. The following values were computed from the NAD 83(2011) position.
 AB4622
 AB4622;                    North         East     Units Scale Factor Converg.
 AB4622;SPC MD       -   193,042.227   395,281.150   MT  0.99999254   -0 02 03.8
 AB4622;SPC MD       -   633,339.37  1,296,851.57   sFT  0.99999254   -0 02 03.8
 AB4622;UTM  18      - 4,363,808.898   323,085.297   MT  0.99998537   -1 18 17.0
 AB4622
 AB4622!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4622!SPC MD       -   0.99996594  x   0.99999254  =   0.99995848
 AB4622!UTM  18      -   0.99996594  x   0.99998537  =   0.99995131
 AB4622
 AB4622:                Primary Azimuth Mark                     Grid Az
 AB4622:SPC MD       -  HARRISON                                 195 18 42.7
 AB4622:UTM  18      -  HARRISON                                 196 34 55.9
 AB4622
 AB4622_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2308563808(NAD 83)
 AB4622
 AB4622|---------------------------------------------------------------------|
 AB4622| PID    Reference Object                     Distance      Geod. Az  |
 AB4622|                                                           dddmmss.s |
 AB4622| AB4654 HARRISON                            APPROX. 1.0 KM 1951638.9 |
 AB4622|---------------------------------------------------------------------|
 AB4622
 AB4622                          SUPERSEDED SURVEY CONTROL
 AB4622
 AB4622  NAD 83(2007)-  39 24 20.37373(N)    077 03 17.23852(W) AD(2002.00) 0
 AB4622  ELLIP H (02/10/07)  217.108  (m)                       GP(2002.00)    
 AB4622  ELLIP H (08/30/02)  217.103  (m)                       GP(       ) 4 2
 AB4622  NAD 83(1991)-  39 24 20.37366(N)    077 03 17.23848(W) AD(       ) 1
 AB4622  ELLIP H (07/03/96)  216.995  (m)                       GP(       ) 1 1
 AB4622  NAVD 88 (07/03/96)  249.0    (m)  GEOID93  model used  GPS OBS        
 AB4622
 AB4622.Superseded values are not recommended for survey control.
 AB4622
 AB4622.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4622.See file dsdata.pdf to determine how the superseded data were derived.
 AB4622
 AB4622_MARKER: DD = SURVEY DISK
 AB4622_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4622_STAMPING: HARRISON AZIMUTH 1995
 AB4622_MARK LOGO: MD-013
 AB4622_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4622_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4622+STABILITY: SURFACE MOTION
 AB4622_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4622+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4622
 AB4622  HISTORY     - Date     Condition        Report By
 AB4622  HISTORY     - 1995     MONUMENTED       MD-013
 AB4622
 AB4622                          STATION DESCRIPTION
 AB4622
 AB4622'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4622'STATION IS LOCATED ABOUT 11 MI (17.7 KM) SOUTH OF WESTMINSTER, 6.5 MI
 AB4622'(10.5 KM) NORTHEAST OF MOUNT AIRY AND ABOUT 6.0 MI (9.7 KM) NORTHWEST
 AB4622'OF SYKESVILLE. TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 97
 AB4622'(OLD WASHINGTON ROAD) AND MD ROUTE 26 (LIBERTY ROAD) GO WEST ON MD
 AB4622'ROUTE 26 FOR 3 MI (4.8 KM) TO THE INTERSECTION WITH WOODBINE ROAD.
 AB4622'TURN LEFT AND GO SOUTH ON WOODBINE ROAD FOR 2.9 MI (4.7 KM) TO THE
 AB4622'STATION ON THE RIGHT. STATION IS ALSO 0.2 MI (0.3 KM) SOUTH OF THE
 AB4622'INTERSECTION OF GILLIS ROAD AND WOODBINE ROAD AND 1.35 MI (2.17 KM)
 AB4622'NORTH OF THE INTERSECTION OF WOODBINE ROAD AND GILLIS FALLS ROAD.
 AB4622'STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT
 AB4622'SET FLUSH WITH THE GROUND. STATION IS ON THE WEST SIDE OF WOODBINE
 AB4622'ROAD AND OPPOSITE A GRAVEL DRIVE LEADING TO HOUSE NO. 6129. IT IS 47.4
 AB4622'FT (14.4 M) WEST OF THE CENTERLINE OF THE ROAD, 75.5 FT (23.0 M) WEST
 AB4622'OF POWER POLE NO.481722, 88.0 FT (26.8 M) SOUTHWEST OF POWER POLE PED
 AB4622'NO.17 AND 7.5 FT (2.3 M) SOUTH OF A LIGHT POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6031 ***********************************************************************
 HV6031  DESIGNATION -  HARRY
 HV6031  PID         -  HV6031
 HV6031  STATE/COUNTY-  MD/TALBOT
 HV6031  COUNTRY     -  US
 HV6031  USGS QUAD   -  OXFORD (2016)
 HV6031
 HV6031                         *CURRENT SURVEY CONTROL
 HV6031  ______________________________________________________________________
 HV6031* NAD 83(1991) POSITION- 38 40 16.59514(N) 076 08 02.52129(W)   ADJUSTED
 HV6031* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6031  ______________________________________________________________________
 HV6031  GEOID HEIGHT    -        -34.746 (meters)                     GEOID18
 HV6031  LAPLACE CORR    -         -3.67  (seconds)                    DEFLEC18
 HV6031  HORZ ORDER      -  THIRD
 HV6031
 HV6031.The horizontal coordinates were established by classical geodetic methods
 HV6031.and adjusted by the National Geodetic Survey in January 1992.
 HV6031
 HV6031.The orthometric height was scaled from a topographic map.
 HV6031
 HV6031.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6031.GEOID18 height accuracy estimate available here.
 HV6031
 HV6031.Click photographs - Photos may exist for this station.
 HV6031
 HV6031.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6031
 HV6031. The following values were computed from the NAD 83(1991) position.
 HV6031
 HV6031;                    North         East     Units Scale Factor Converg.
 HV6031;SPC MD       -   111,873.026   475,356.982   MT  0.99995619   +0 32 36.6
 HV6031;SPC MD       -   367,036.75  1,559,567.03   sFT  0.99995619   +0 32 36.6
 HV6031;UTM  18      - 4,280,908.887   401,347.856   MT  0.99971985   -0 42 31.2
 HV6031
 HV6031!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6031!SPC MD       -   1.00000549  x   0.99995619  =   0.99996168
 HV6031!UTM  18      -   1.00000549  x   0.99971985  =   0.99972534
 HV6031
 HV6031:                Primary Azimuth Mark                     Grid Az
 HV6031:SPC MD       -  CHARLES                                  055 03 20.0
 HV6031:UTM  18      -  CHARLES                                  056 18 27.8
 HV6031
 HV6031_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0134780908(NAD 83)
 HV6031
 HV6031|---------------------------------------------------------------------|
 HV6031| PID    Reference Object                     Distance      Geod. Az  |
 HV6031|                                                           dddmmss.s |
 HV6031| HV6062 CHARLES                             APPROX. 0.6 KM 0553556.6 |
 HV6031| HV5992 MASLIN                              379.439 METERS 14602     |
 HV6031| HV5993 KENT                                APPROX. 0.5 KM 2162711.5 |
 HV6031|---------------------------------------------------------------------|
 HV6031
 HV6031                          SUPERSEDED SURVEY CONTROL
 HV6031
 HV6031  NAD 83(1986)-  38 40 16.59171(N)    076 08 02.53738(W) AD(       ) 3
 HV6031  NAD 27      -  38 40 16.15900(N)    076 08 03.75400(W) AD(       ) 3
 HV6031  USSD        -  38 40 16.55300(N)    076 08 03.56300(W) AD(       ) 3
 HV6031
 HV6031.Superseded values are not recommended for survey control.
 HV6031
 HV6031.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6031.See file dsdata.pdf to determine how the superseded data were derived.
 HV6031
 HV6031_MARKER: H = DRILL HOLE
 HV6031_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6031_PROJECTION: PROJECTING 10 CENTIMETERS
 HV6031_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6031
 HV6031  HISTORY     - Date     Condition        Report By
 HV6031  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6031  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6031
 HV6031                          STATION DESCRIPTION
 HV6031
 HV6031'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6031'ON THE NORTHERN SHORE OF ISLAND CREEK, ABOUT 1-1/2 MILES FROM
 HV6031'CHOPTANK RIVER, ABOUT 6 FEET ABOVE HIGH WATER, 9 YARDS NW OF EDGE
 HV6031'OF BANK AT CEDAR TREES, 20 YARDS NE OF CUT IN BANK, AND 50 YARDS
 HV6031'SSW OF BANK AT CUT IN SHORE.  STATION IS MARKED BY A HOLE IN THE
 HV6031'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6031'MONUMENT, AN 8-INCH CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6031'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6031'COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE CENTER OF A
 HV6031'2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE
 HV6031'BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV6031'REFERENCE ARE AS FOLLOWS--RIGHT CORNER OF BUILDING, 5/8 MILE, S 6
 HV6031'DEG 42 MIN W.  SPINDLE ON BARN CUPOLA, 1/2 MILE, S 62 DEG 13 MIN
 HV6031'W.  NEAR PEAK OF BUILDING, 3/8 MILE, N 40 DEG 39 MIN W.  NAIL IN
 HV6031'BLAZE IN 4-INCH LOCUST TREE, 17.38 METERS (57.0 FEET), N 67 DEG 33
 HV6031'MIN E.  NAIL IN BLAZE IN 4-INCH LOCUST TREE, 8.81 METERS (28.9
 HV6031'FEET), S 85 DEG 1 MIN E.  NAIL IN BLAZE IN 4-INCH CEDAR TREE, 8.04
 HV6031'METERS (26.38 FEET), S 46 DEG 20 MIN E.  LEFT CHIMNEY OUTSIDE LEFT
 HV6031'END OF HOUSE, 3/8 MILE, S 32 DEG 8 MIN E.
 HV6031
 HV6031                          STATION RECOVERY (1940)
 HV6031
 HV6031'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6031'STATION VISITED BUT NOT RECOVERED.  IT WAS IN A CULTIVATED FIELD
 HV6031'AND MONUMENT HAS BEEN PLOWED OUT.  CEDAR TREES MENTIONED IN
 HV6031'DESCRIPTION ARE NO LONGER STANDING.
 HV6031'
 HV6031'RECOMMENDED THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5251 ***********************************************************************
 JV5251  DESIGNATION -  HART
 JV5251  PID         -  JV5251
 JV5251  STATE/COUNTY-  MD/BALTIMORE
 JV5251  COUNTRY     -  US
 JV5251  USGS QUAD   -  SPARROWS POINT (2016)
 JV5251
 JV5251                         *CURRENT SURVEY CONTROL
 JV5251  ______________________________________________________________________
 JV5251* NAD 83(1991) POSITION- 39 14 43.55381(N) 076 22 59.99000(W)   ADJUSTED
 JV5251* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5251  ______________________________________________________________________
 JV5251  GEOID HEIGHT    -        -33.065 (meters)                     GEOID18
 JV5251  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 JV5251  HORZ ORDER      -  SECOND
 JV5251
 JV5251.The horizontal coordinates were established by classical geodetic methods
 JV5251.and adjusted by the National Geodetic Survey in January 1992.
 JV5251
 JV5251.The orthometric height was scaled from a topographic map.
 JV5251
 JV5251.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5251.GEOID18 height accuracy estimate available here.
 JV5251
 JV5251.Click photographs - Photos may exist for this station.
 JV5251
 JV5251.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5251
 JV5251. The following values were computed from the NAD 83(1991) position.
 JV5251
 JV5251;                    North         East     Units Scale Factor Converg.
 JV5251;SPC MD       -   175,432.198   453,232.845   MT  0.99997061   +0 23 13.4
 JV5251;SPC MD       -   575,563.80  1,486,981.43   sFT  0.99997061   +0 23 13.4
 JV5251;UTM  18      - 4,344,924.734   380,627.566   MT  0.99977545   -0 52 30.9
 JV5251
 JV5251!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5251!SPC MD       -   1.00000507  x   0.99997061  =   0.99997568
 JV5251!UTM  18      -   1.00000507  x   0.99977545  =   0.99978052
 JV5251
 JV5251:                Primary Azimuth Mark                     Grid Az
 JV5251:SPC MD       -  REIN                                     254 37 38.7
 JV5251:UTM  18      -  REIN                                     255 53 23.0
 JV5251
 JV5251_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8062744924(NAD 83)
 JV5251
 JV5251|---------------------------------------------------------------------|
 JV5251| PID    Reference Object                     Distance      Geod. Az  |
 JV5251|                                                           dddmmss.s |
 JV5251| CA9502 HART RM 2                            40.130 METERS 04229     |
 JV5251| CA9501 HART RM 1                            77.605 METERS 12239     |
 JV5251| JV5252 CRAIGHILL CHAN REAR RNG LT          APPROX. 2.1 KM 2074422.9 |
 JV5251| JV5288 REIN                                APPROX. 3.9 KM 2550052.1 |
 JV5251|---------------------------------------------------------------------|
 JV5251
 JV5251                          SUPERSEDED SURVEY CONTROL
 JV5251
 JV5251  NAD 83(1986)-  39 14 43.54874(N)    076 22 59.99865(W) AD(       ) 2
 JV5251  NAD 27      -  39 14 43.16000(N)    076 23 01.15900(W) AD(       ) 2
 JV5251
 JV5251.Superseded values are not recommended for survey control.
 JV5251
 JV5251.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5251.See file dsdata.pdf to determine how the superseded data were derived.
 JV5251
 JV5251_MARKER: DS = TRIANGULATION STATION DISK
 JV5251_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5251_STAMPING: HART 1934
 JV5251_MARK LOGO: CGS
 JV5251_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5251+STABILITY: SURFACE MOTION
 JV5251
 JV5251  HISTORY     - Date     Condition        Report By
 JV5251  HISTORY     - 1934     MONUMENTED       CGS
 JV5251  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5251
 JV5251                          STATION DESCRIPTION
 JV5251
 JV5251'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5251'AT MOUTH OF BACK RIVER ON HART ISLAND IN MARSH 200 FEET SW OF
 JV5251'TIMBER LINE, 280 FEET NW OF HIGH-WATER LINE AND ABOUT 400 FEET E
 JV5251'OF HIGH-WATER LINE.
 JV5251'
 JV5251'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5251'CONCRETE AS DESCRIBED IN NOTE 1A AND 11A.
 JV5251'
 JV5251'REFERENCE MARK NO.1 IS ON SAND RIDGE 254 FEET SW FROM STATION AND
 JV5251'30 FEET FROM HIGH-WATER LINE.
 JV5251'
 JV5251'REFERENCE MARK NO.2 IS IN MARSH 131 FEET NE FROM STATION AND 8
 JV5251'FEET FROM LONE 2-INCH MAPLE TREE.
 JV5251
 JV5251                          STATION RECOVERY (1961)
 JV5251
 JV5251'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5251'STATION AND REFERENCE MARK COULD NOT BE FOUND.  THE ENTIRE
 JV5251'SHORELINE AND TREELINE OF THE ISLAND HAS CHANGED OVER THE YEARS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5254 ***********************************************************************
 JV5254  DESIGNATION -  HART 2
 JV5254  PID         -  JV5254
 JV5254  STATE/COUNTY-  MD/BALTIMORE
 JV5254  COUNTRY     -  US
 JV5254  USGS QUAD   -  SPARROWS POINT (2016)
 JV5254
 JV5254                         *CURRENT SURVEY CONTROL
 JV5254  ______________________________________________________________________
 JV5254* NAD 83(1991) POSITION- 39 14 56.70409(N) 076 23 12.58768(W)   ADJUSTED
 JV5254* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5254  ______________________________________________________________________
 JV5254  GEOID HEIGHT    -        -33.061 (meters)                     GEOID18
 JV5254  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 JV5254  HORZ ORDER      -  SECOND
 JV5254
 JV5254.The horizontal coordinates were established by classical geodetic methods
 JV5254.and adjusted by the National Geodetic Survey in January 1992.
 JV5254
 JV5254.The orthometric height was scaled from a topographic map.
 JV5254
 JV5254.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5254.GEOID18 height accuracy estimate available here.
 JV5254
 JV5254.Click photographs - Photos may exist for this station.
 JV5254
 JV5254.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5254
 JV5254. The following values were computed from the NAD 83(1991) position.
 JV5254
 JV5254;                    North         East     Units Scale Factor Converg.
 JV5254;SPC MD       -   175,835.683   452,928.050   MT  0.99997102   +0 23 05.4
 JV5254;SPC MD       -   576,887.57  1,485,981.44   sFT  0.99997102   +0 23 05.4
 JV5254;UTM  18      - 4,345,334.756   380,331.792   MT  0.99977632   -0 52 39.1
 JV5254
 JV5254!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5254!SPC MD       -   1.00000507  x   0.99997102  =   0.99997609
 JV5254!UTM  18      -   1.00000507  x   0.99977632  =   0.99978139
 JV5254
 JV5254:                Primary Azimuth Mark                     Grid Az
 JV5254:SPC MD       -  CUCKHOLD                                 223 26 48.1
 JV5254:UTM  18      -  CUCKHOLD                                 224 42 32.6
 JV5254
 JV5254_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8033145334(NAD 83)
 JV5254
 JV5254|---------------------------------------------------------------------|
 JV5254| PID    Reference Object                     Distance      Geod. Az  |
 JV5254|                                                           dddmmss.s |
 JV5254| CA9504 HART 2 RM 2                          25.740 METERS 15515     |
 JV5254| JV5274 CUCKHOLD                            APPROX. 1.6 KM 2234953.5 |
 JV5254| CA9503 HART 2 RM 1                          11.860 METERS 35911     |
 JV5254|---------------------------------------------------------------------|
 JV5254
 JV5254                          SUPERSEDED SURVEY CONTROL
 JV5254
 JV5254  NAD 83(1986)-  39 14 56.69899(N)    076 23 12.59662(W) AD(       ) 2
 JV5254  NAD 27      -  39 14 56.30850(N)    076 23 13.75220(W) AD(       ) 2
 JV5254
 JV5254.Superseded values are not recommended for survey control.
 JV5254
 JV5254.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5254.See file dsdata.pdf to determine how the superseded data were derived.
 JV5254
 JV5254_MARKER: DS = TRIANGULATION STATION DISK
 JV5254_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV5254_STAMPING: HART 2 1961
 JV5254_MARK LOGO: CGS
 JV5254_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5254
 JV5254  HISTORY     - Date     Condition        Report By
 JV5254  HISTORY     - 1961     MONUMENTED       CGS
 JV5254  HISTORY     - 1972     MARK NOT FOUND   NGS
 JV5254  HISTORY     - 1972     POOR             MDDNR
 JV5254
 JV5254                          STATION DESCRIPTION
 JV5254
 JV5254'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5254'THE STATION IS LOCATED ON DRUM POINT ON HART ISLAND BETWEEN HAWK
 JV5254'COVE AND THE CHESAPEAKE BAY.  THE STATION IS A STANDARD
 JV5254'TRIANGULATION DISK AS DESCRIBED IN NOTE 6A, STAMPED HART 2 1961,
 JV5254'AND PROJECTS ABOUT 4 INCHES ABOVE THE GROUND.
 JV5254'
 JV5254'THE STATION IS 30 FEET EAST OF THE M.H.W.L., 97 FEET SOUTH OF THE
 JV5254'TIP OF DRUM POINT, ON A SAND RIDGE ABOUT 6 FEET ABOVE THE M.H.W.L.
 JV5254'THE STATION IS ABOUT 12 FEET NORTH OF THE SOUTHERN TIP OF THE SAND
 JV5254'RIDGE WHICH RUNS SOUTH FROM THE TIP OF DRUM POINT.
 JV5254'
 JV5254'REFERENCE MARK 1 IS A STANDARD DISK AS DESCRIBED IN NOTE 13A
 JV5254'STAMPED HART 2 1961 NO. 1, AND IS 11.9 METERS NORTH OF THE
 JV5254'STATION ON THE INSHORE SIDE OF THE SAND RIDGE.
 JV5254'
 JV5254'REFERENCE MARK 2 IS A STANDARD DISK AS DESCRIBED IN NOTE 13A,
 JV5254'STAMPED HART 2 1961 NO.2, AND IS 25.7 METERS SOUTH OF THE STATION.
 JV5254'
 JV5254'TO REACH THE STATION, ONE MUST USE A BOAT.
 JV5254'
 JV5254'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV5254
 JV5254                          STATION RECOVERY (1972)
 JV5254
 JV5254'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (MCG)
 JV5254'THE STATION, RM1 AND RM2 WERE NOT RECOVERED.  THE LOWER PORTION OF
 JV5254'A CONCRETE FILLED DRAIN TILE WAS FOUND IN PLACE ON THE BEACH, BUT
 JV5254'DUE TO CHANGES IN THE FEATURES OF HART ISLAND, IT WAS IMPOSSIBLE
 JV5254'TO DETERMINE WHETHER IT WAS THE STATION, RM1 OR RM2.
 JV5254'
 JV5254'BOATS TO REACH HART ISLAND CAN BE RENTED IN THE CUCKHOLD POINT AREA.
 JV5254
 JV5254                          STATION RECOVERY (1972)
 JV5254
 JV5254'RECOVERY NOTE BY MD DEPT OF NAT RES 1972 (GEH)
 JV5254'STATION RECOVERED IN POOR CONDITION.  THE TOP OF THE MONUMENT HAS
 JV5254'BEEN BROKEN OFF AND NO DISK COULD BE FOUND.  RMS SEARCHED FOR BUT
 JV5254'NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1988 ***********************************************************************
 HU1988  DESIGNATION -  HARVEST
 HU1988  PID         -  HU1988
 HU1988  STATE/COUNTY-  MD/CAROLINE
 HU1988  COUNTRY     -  US
 HU1988  USGS QUAD   -  BURRSVILLE (2016)
 HU1988
 HU1988                         *CURRENT SURVEY CONTROL
 HU1988  ______________________________________________________________________
 HU1988* NAD 83(1991) POSITION- 38 52 50.67299(N) 075 43 37.48232(W)   ADJUSTED
 HU1988* NAVD 88 ORTHO HEIGHT -    20.1   (meters)       66.    (feet) VERTCON3
 HU1988  ______________________________________________________________________
 HU1988  GEOID HEIGHT    -        -35.026 (meters)                     GEOID18
 HU1988  LAPLACE CORR    -         -2.85  (seconds)                    DEFLEC18
 HU1988  HORZ ORDER      -  SECOND
 HU1988
 HU1988.The horizontal coordinates were established by classical geodetic methods
 HU1988.and adjusted by the National Geodetic Survey in January 1992.
 HU1988
 HU1988.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1988.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1988
 HU1988.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1988.GEOID18 height accuracy estimate available here.
 HU1988
 HU1988.Click photographs - Photos may exist for this station.
 HU1988
 HU1988.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1988
 HU1988. The following values were computed from the NAD 83(1991) position.
 HU1988
 HU1988;                    North         East     Units Scale Factor Converg.
 HU1988;SPC MD       -   135,537.595   510,444.366   MT  0.99994985   +0 47 56.1
 HU1988;SPC MD       -   444,676.26  1,674,682.89   sFT  0.99994985   +0 47 56.1
 HU1988;UTM  18      - 4,303,793.764   436,935.091   MT  0.99964897   -0 27 23.1
 HU1988
 HU1988!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1988!SPC MD       -   1.00000235  x   0.99994985  =   0.99995220
 HU1988!UTM  18      -   1.00000235  x   0.99964897  =   0.99965132
 HU1988
 HU1988:                Primary Azimuth Mark                     Grid Az
 HU1988:SPC MD       -  HARVEST AZ MK                            341 14 36.0
 HU1988:UTM  18      -  HARVEST AZ MK                            342 29 55.2
 HU1988
 HU1988_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3693503793(NAD 83)
 HU1988
 HU1988|---------------------------------------------------------------------|
 HU1988| PID    Reference Object                     Distance      Geod. Az  |
 HU1988|                                                           dddmmss.s |
 HU1988| DC7371 HARVEST RM 1                         23.008 METERS 06335     |
 HU1988| DC7372 HARVEST RM 2                         23.256 METERS 11009     |
 HU1988| HU1987 BOUNDARY MONUMENT 29 DEL MD          28.567 METERS 12736     |
 HU1988| DC7370 HARVEST AZ MK                                      3420232.1 |
 HU1988| HU2004 BURRS RM 4                          APPROX. 1.6 KM 3564727.2 |
 HU1988|---------------------------------------------------------------------|
 HU1988
 HU1988                          SUPERSEDED SURVEY CONTROL
 HU1988
 HU1988  NAD 83(1986)-  38 52 50.66578(N)    075 43 37.49702(W) AD(       ) 2
 HU1988  NAD 27      -  38 52 50.25900(N)    075 43 38.75510(W) AD(       ) 2
 HU1988  NGVD 29 (07/19/86)   20.3    (m)           67.     (f) VERT ANG       
 HU1988
 HU1988.Superseded values are not recommended for survey control.
 HU1988
 HU1988.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1988.See file dsdata.pdf to determine how the superseded data were derived.
 HU1988
 HU1988_MARKER: DS = TRIANGULATION STATION DISK
 HU1988_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1988_STAMPING: HARVEST 1961
 HU1988_MARK LOGO: CGS
 HU1988_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1988+STABILITY: SURFACE MOTION
 HU1988
 HU1988  HISTORY     - Date     Condition        Report By
 HU1988  HISTORY     - 1962     MONUMENTED       CGS
 HU1988
 HU1988                          STATION DESCRIPTION
 HU1988
 HU1988'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1988'THE STATION IS LOCATED IN AN EAST AND WEST FENCELINE BETWEEN TWO
 HU1988'CULTIVATED FIELDS AND NEAR A FENCE CORNER, ABOUT 5.5 MILES EAST
 HU1988'OF DENTON, MARYLAND AND ABOUT 1.0 MILE SOUTH OF THE SMALL
 HU1988'SETTLEMENT OF BURRSVILLE, MARYLAND.
 HU1988'
 HU1988'TO REACH THE STATION FROM THE CROSSROADS, STATE HIGHWAY 317 AND
 HU1988'THE OLD HIGHWAY, IN BURRSVILLE, MARYLAND.  GO SOUTHEAST ON THE
 HU1988'OLD HIGHWAY FOR 0.15 MILE TO A SIDE ROAD ON THE RIGHT.  TURN
 HU1988'RIGHT AND GO SOUTH-SOUTHEAST ON A GRAVELED ROAD FOR 0.65 MILE TO
 HU1988'A FORK.  TAKE THE RIGHT FORK AND GO SOUTH ON A GRAVELED ROAD FOR
 HU1988'0.1 MILE TO THE AZIMUTH MARK ON THE RIGHT HAND SIDE OF THE
 HU1988'ROAD.  CONTINUE SOUTHEAST ON THE GRAVELED ROAD FOR 0.35 MILE TO
 HU1988'A FORK.  TAKE THE LEFT HAND FORK AND GO EAST-NORTHEAST ON A
 HU1988'GRAVELED ROAD FOR 0.15 MILE TO A FARM LANE ENTRANCE ON THE
 HU1988'LEFT, NORTH, SIDE OF THE GRAVELED ROAD.  TURN LEFT AND GO NORTH
 HU1988'ON A FARM LANE FOR 0.1 MILE TO THE NORTH END OF A BARN.
 HU1988'CONTINUE NORTH ACROSS A CULTIVATED FIELD FOR 0.15 MILE TO A
 HU1988'FENCELINE AND A LONE CEDAR TREE.  TURN RIGHT AND GO NORTHWEST
 HU1988'ALONG FENCELINE TO THE END OF FENCE, A DISTANCE OF 0.05 MILE.
 HU1988'TURN LEFT AND GO NORTH FOR 0.05 MILE TO A STANDARD METAL
 HU1988'WITNESS POST AND MARKER AND THE STATION.
 HU1988'
 HU1988'THE STATION MARK, A STANDARD DISK STAMPED HARVEST 1961, IS SET
 HU1988'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 3
 HU1988'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 3.0 FEET SOUTHWEST
 HU1988'OF A STANDARD METAL WITNESS POST AND MARKER AND 2.5 FEET SOUTHEAST
 HU1988'OF A FENCELINE.
 HU1988'
 HU1988'REFERENCE MARK 1, A STANDARD DISK STAMPED HARVEST NO 1 1961, IS
 HU1988'SET IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT FLUSH WITH THE
 HU1988'SURFACE OF THE GROUND.  IT IS 73.5 FEET EAST OF A STANDARD METAL
 HU1988'WITNESS POST AND MARKER, 0.4 INCHES WEST OF A FENCELINE AND ABOUT
 HU1988'THE SAME ELEVATION AS THE STATION MARK.
 HU1988'
 HU1988'REFERENCE MARK 2, A STANDARD DISK STAMPED HARVEST NO 2 1961, IS
 HU1988'SET IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT FLUSH WITH THE
 HU1988'SURFACE OF THE GROUND.  IT IS 76.4 FEET SOUTHEAST OF A STANDARD
 HU1988'METAL WITNESS POST AND MARKER, 0.6 INCHES WEST OF A FENCELINE AND
 HU1988'ABOUT THE SAME ELEVATION AS THE STATION.
 HU1988'
 HU1988'THE AZIMUTH MARK, A STANDARD DISK STAMPED HARVEST 1961, IS SET
 HU1988'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT FLUSH WITH THE SURFACE
 HU1988'OF THE GROUND.  IT IS 15.0 FEET NORTH-NORTHWEST OF THE CENTERLINE
 HU1988'OF A GRAVELED ROAD, 3.0 FEET NORTH-NORTHEAST OF A STANDARD METAL
 HU1988'WITNESS POST AND MARKER AND 1.5 FEET WEST OF POWERLINE POLE
 HU1988'NO. 194-35-7.
 HU1988'
 HU1988'BOUNDARY MONUMENT NO. 29, A 12-INCH SQUARE GRANITE STONE
 HU1988'PROJECTING ABOUT 25 INCHES ABOVE THE SURFACE OF THE GROUND, LEANS
 HU1988'SLIGHTLY TO THE SOUTH, IN GENERAL THE MONUMENT IS IN GOOD
 HU1988'CONDITION.  THE MONUMENT HAS THE LETTER M CUT IN ON ITS WEST
 HU1988'SIDE AND THE LETTER P ON THE EAST SIDE AND A SMALL CROSS WAS
 HU1988'INSCRIBED IN ITS TOP AND CENTER FOR TRAVERSE PURPOSE ON THIS
 HU1988'DATE.  IT IS 94.5 FEET SOUTHEAST OF A STANDARD METAL WITNESS
 HU1988'POST AND MARKER, 6.0 FEET NORTH OF A 9-INCH ELM TREE AND IN A
 HU1988'NORTH AND SOUTH FENCELINE.
 HU1988'
 HU1988'HEIGHT OF LIGHT ABOVE STATION MARK 2 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7218 ***********************************************************************
 HV7218  DESIGNATION -  HARWOOD MICROWAVE TOWER
 HV7218  PID         -  HV7218
 HV7218  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7218  COUNTRY     -  US
 HV7218  USGS QUAD   -  DEALE (2016)
 HV7218
 HV7218                         *CURRENT SURVEY CONTROL
 HV7218  ______________________________________________________________________
 HV7218* NAD 83(1991) POSITION- 38 52 28.69639(N) 076 36 33.64725(W)   ADJUSTED
 HV7218  ______________________________________________________________________
 HV7218  GEOID HEIGHT    -        -33.236 (meters)                     GEOID18
 HV7218  LAPLACE CORR    -         -5.22  (seconds)                    DEFLEC18
 HV7218  HORZ ORDER      -  THIRD
 HV7218
 HV7218.The horizontal coordinates were established by classical geodetic methods
 HV7218.and adjusted by the National Geodetic Survey in January 1992.
 HV7218
 HV7218.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7218.GEOID18 height accuracy estimate available here.
 HV7218
 HV7218.Click photographs - Photos may exist for this station.
 HV7218
 HV7218.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7218
 HV7218. The following values were computed from the NAD 83(1991) position.
 HV7218
 HV7218;                    North         East     Units Scale Factor Converg.
 HV7218;SPC MD       -   134,162.442   433,898.742   MT  0.99994985   +0 14 42.7
 HV7218;SPC MD       -   440,164.61  1,423,549.46   sFT  0.99994985   +0 14 42.7
 HV7218;UTM  18      - 4,304,095.885   360,394.355   MT  0.99984000   -1 00 36.8
 HV7218
 HV7218_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6039404095(NAD 83)
 HV7218
 HV7218                          SUPERSEDED SURVEY CONTROL
 HV7218
 HV7218  NAD 83(1986)-  38 52 28.69253(N)    076 36 33.65897(W) AD(       ) 3
 HV7218  NAD 27      -  38 52 28.28509(N)    076 36 34.79324(W) AD(       ) 3
 HV7218
 HV7218.Superseded values are not recommended for survey control.
 HV7218
 HV7218.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7218.See file dsdata.pdf to determine how the superseded data were derived.
 HV7218
 HV7218_MARKER: 45 = MICROWAVE TOWER
 HV7218_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7218+SATELLITE: SATELLITE OBSERVATIONS - November 13, 2004
 HV7218
 HV7218  HISTORY     - Date     Condition        Report By
 HV7218  HISTORY     - 1957     FIRST OBSERVED   CGS
 HV7218  HISTORY     - 20041113 GOOD             USPSQD
 HV7218
 HV7218                          STATION DESCRIPTION
 HV7218
 HV7218'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV7218'STATION IS LOCATED ABOUT 11 MILES SOUTHWEST OF ANNAPOLIS AND 1
 HV7218'MILE NORTHEAST OF HARWOOD ALONG THE EAST SIDE OF STATE HIGHWAY 2.
 HV7218'STATION IS A STEEL STRUCTURE, ABOUT 40 FEET SQUARE AT THE BASE,
 HV7218'AND 220 FEET TALL.  STATION IS PAINTED RED AND WHITE AND HAS FOUR
 HV7218'LARGE FAN SHAPED REFLECTORS.
 HV7218'
 HV7218'THE POINT INTERSECTED WAS THE RED LIGHT ON TOP THE TOWER.
 HV7218'
 HV7218'TO REACH FROM THE POST OFFICE IN HARWOOD GO NORTHEASTERLY ON STATE
 HV7218'HIGHWAY 2 FOR 1.0 MILE TO DRIVEWAY ON THE RIGHT.  TURN RIGHT ON
 HV7218'DRIVEWAY AND GO 0.05 MILE TO ROAD RIGHT. TURN RIGHT AND GO UP HILL
 HV7218'FOR 0.1 MILE TO STATION AS DESCRIBED.
 HV7218
 HV7218                          STATION RECOVERY (2004)
 HV7218
 HV7218'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV7218'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0910 ***********************************************************************
 JV0910  DESIGNATION -  HARWOOD RESET
 JV0910  PID         -  JV0910
 JV0910  STATE/COUNTY-  MD/HOWARD
 JV0910  COUNTRY     -  US
 JV0910  USGS QUAD   -  RELAY (2016)
 JV0910
 JV0910                         *CURRENT SURVEY CONTROL
 JV0910  ______________________________________________________________________
 JV0910* NAD 83(2011) POSITION- 39 11 59.46359(N) 076 44 16.04830(W)   ADJUSTED
 JV0910* NAD 83(2011) ELLIP HT-    25.278 (meters)        (06/27/12)   ADJUSTED
 JV0910* NAD 83(2011) EPOCH   -  2010.00
 JV0910* NAVD 88 ORTHO HEIGHT -    57.757 (meters)      189.49  (feet) ADJUSTED
 JV0910  ______________________________________________________________________
 JV0910  GEOID HEIGHT    -        -32.471 (meters)                     GEOID18
 JV0910  NAD 83(2011) X  -  1,135,420.443 (meters)                     COMP
 JV0910  NAD 83(2011) Y  - -4,817,356.884 (meters)                     COMP
 JV0910  NAD 83(2011) Z  -  4,009,551.100 (meters)                     COMP
 JV0910  LAPLACE CORR    -         -6.06  (seconds)                    DEFLEC18
 JV0910  DYNAMIC HEIGHT  -         57.727 (meters)      189.39  (feet) COMP
 JV0910  MODELED GRAVITY -    980,095.8   (mgal)                       NAVD 88
 JV0910
 JV0910  VERT ORDER      -  SECOND    CLASS I
 JV0910
 JV0910  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV0910  Standards:
 JV0910         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV0910            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV0910  -------------------------------------------------------------------
 JV0910  NETWORK    1.22   1.39           0.56   0.41   0.71      0.01369079
 JV0910  -------------------------------------------------------------------
 JV0910  Click here for local accuracies and other accuracy information.
 JV0910
 JV0910.The horizontal coordinates were established by GPS observations
 JV0910.and adjusted by the National Geodetic Survey in June 2012.
 JV0910
 JV0910.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV0910.been affixed to the stable North American tectonic plate. See 
 JV0910.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV0910
 JV0910.The horizontal coordinates are valid at the epoch date displayed above
 JV0910.which is a decimal equivalence of Year/Month/Day.
 JV0910
 JV0910.The orthometric height was determined by differential leveling and
 JV0910.adjusted by the NATIONAL GEODETIC SURVEY
 JV0910.in March 2010.
 JV0910
 JV0910.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0910.GEOID18 height accuracy estimate available here.
 JV0910
 JV0910.Click photographs - Photos may exist for this station.
 JV0910
 JV0910.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV0910
 JV0910.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0910
 JV0910.The ellipsoidal height was determined by GPS observations
 JV0910.and is referenced to NAD 83.
 JV0910
 JV0910.The dynamic height is computed by dividing the NAVD 88
 JV0910.geopotential number by the normal gravity value computed on the
 JV0910.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0910.degrees latitude (g = 980.6199 gals.).
 JV0910
 JV0910.The modeled gravity was interpolated from observed gravity values.
 JV0910
 JV0910. The following values were computed from the NAD 83(2011) position.
 JV0910
 JV0910;                    North         East     Units Scale Factor Converg.
 JV0910;SPC MD       -   170,224.740   422,649.364   MT  0.99996580   +0 09 52.5
 JV0910;SPC MD       -   558,479.00  1,386,642.12   sFT  0.99996580   +0 09 52.5
 JV0910;UTM  18      - 4,340,393.165   349,941.166   MT  0.99987726   -1 05 54.7
 JV0910
 JV0910!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0910!SPC MD       -   0.99999603  x   0.99996580  =   0.99996183
 JV0910!UTM  18      -   0.99999603  x   0.99987726  =   0.99987329
 JV0910
 JV0910_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4994140393(NAD 83)
 JV0910
 JV0910                          SUPERSEDED SURVEY CONTROL
 JV0910
 JV0910  NAD 83(2007)-  39 11 59.46391(N)    076 44 16.04939(W) AD(2002.00) 0
 JV0910  ELLIP H (02/10/07)   25.301  (m)                       GP(2002.00)    
 JV0910  ELLIP H (08/30/02)   25.296  (m)                       GP(       ) 4 2
 JV0910  NAD 83(1991)-  39 11 59.46368(N)    076 44 16.04913(W) AD(       ) 1
 JV0910  ELLIP H (11/16/00)   25.230  (m)                       GP(       ) 4 1
 JV0910  NAVD 88              57.78   (m)          189.6    (f) LEVELING    3  
 JV0910  NAVD 88 (06/15/91)   57.778  (m)          189.56   (f) SUPERSEDED  1 1
 JV0910  NGVD 29 (11/26/84)   58.017  (m)          190.34   (f) ADJUSTED    1 1
 JV0910
 JV0910.Superseded values are not recommended for survey control.
 JV0910
 JV0910.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0910.See file dsdata.pdf to determine how the superseded data were derived.
 JV0910
 JV0910_MARKER: DD = SURVEY DISK
 JV0910_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0910_STAMPING: HARWOOD RESET 1961
 JV0910_MARK LOGO: MDBCSM
 JV0910_PROJECTION: RECESSED 2 CENTIMETERS
 JV0910_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV0910_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0910_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0910+SATELLITE: SATELLITE OBSERVATIONS - August 02, 2017
 JV0910
 JV0910  HISTORY     - Date     Condition        Report By
 JV0910  HISTORY     - 1961     MONUMENTED       MDSRC
 JV0910  HISTORY     - 1971     GOOD             NGS
 JV0910  HISTORY     - 20000915 GOOD             MD-027
 JV0910  HISTORY     - 20030725 GOOD             INDIV
 JV0910  HISTORY     - 20030924 GOOD             USPSQD
 JV0910  HISTORY     - 20070425 GOOD             MDSHA
 JV0910  HISTORY     - 20110818 GOOD             INDIV
 JV0910  HISTORY     - 20170608 GOOD             NGS
 JV0910  HISTORY     - 20170802 GOOD             NGS
 JV0910
 JV0910                          STATION DESCRIPTION
 JV0910
 JV0910'DESCRIBED BY MD STATE ROADS COMM 1961
 JV0910'1.8 MI S FROM ELKRIDGE.
 JV0910'THIS MARK IS LOCATED ALONG U.S. ROUTE 1, 1.8 MILES SOUTH OF THE
 JV0910'BALTIMORE AND OHIO RAILROAD BRIDGE AT ELKRIDGE, APPROXIMATELY
 JV0910'250 FEET SOUTH OF THE INTERSECTION OF HUNT CLUB ROAD.  IT IS
 JV0910'46.5 FEET WEST OF THE CENTERLINE OF U.S. ROUTE 1, 49.7 FEET
 JV0910'SOUTHEAST OF THE SOUTHEAST CORNER OF THE POLKA DOT RESTAURANT, 4.7
 JV0910'FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE TELEPHONE BOOTH, 33.6
 JV0910'FEET NORTH OF TELEPHONE POLE 1, AND 4.5 FEET WEST OF A METAL
 JV0910'POLE SUPPORTING AN ADVERTISING SIGN, AND SET IN THE CONCRETE
 JV0910'FLUSH WITH THE GROUND.
 JV0910
 JV0910                          STATION RECOVERY (1971)
 JV0910
 JV0910'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 JV0910'RECOVERED IN GOOD CONDITION.
 JV0910
 JV0910                          STATION RECOVERY (2000)
 JV0910
 JV0910'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV0910'NEW DESCRIPTION BY HOWARD CUNTY 2000     RECOVERED IN GOOD
 JV0910'CONDITION    THE STATION IS AT ELKRIDGE ON THE WEST SIDE OF ROUTE
 JV0910'US 1. ABOUT  1.8 MILES SOUTH OF THE BALTIMORE OHIO  RAILROAD BRIDGE
 JV0910'AT ELKRIDGE,  265 FEET SOUTH OF HUNT CLUB ROAD, IN THE CORNER OF
 JV0910'THE PARKING LOT  OF BUILDING  NUMBER 6600 OF ROUTE US 1.  IT IS AT THE
 JV0910'NORTH  SIDE OF A  ROAD  LEADING TO A TRAYLER HOME COURT, IT IS 14.8
 JV0910'FEET NORTH OF THE  CENTERLINE OF SAID ROAD, 33.4 FEET TO POLE G  AND
 JV0910'E  235170 AND 46.5 FEET  NORTHWEST OF THE CENTERLINE OF ROUTE  US 1.
 JV0910
 JV0910                          STATION RECOVERY (2003)
 JV0910
 JV0910'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2003 (DMM)
 JV0910'RECOVERED IN GOOD CONDITION.
 JV0910
 JV0910                          STATION RECOVERY (2003)
 JV0910
 JV0910'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0910'RECOVERED IN GOOD CONDITION.  ADD-- THE STATION IS 6.6 FEET NORTHWEST
 JV0910'OF THE NORTHWEST EDGE OF A CONCRETE SIDEWALK, 0.5 FOOT SOUTH OF AN
 JV0910'ORANGE FIBERGLASS WITNESS POST WHICH IS BROKEN AT GROUND LEVEL AND
 JV0910'LEANING BADLY.  NOTE-- THE NUMBER ON THE POLE IS MISSING BUT IT HAS A
 JV0910'GREEN METAL BOX ATTACHED WHICH IS NUMBERED --6620--.  THE BUILDING AT
 JV0910'6600 U.S. 1 IS NOW NAMED -ED'S MOBILE HOME AND RV SUPPLY-.
 JV0910'NOTE-- A TREE TO THE NORTHWEST MAY OBSTRUCT SATELLITE OBSERVATIONS.
 JV0910
 JV0910                          STATION RECOVERY (2007)
 JV0910
 JV0910'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV0910'THE STATION IS LOCATED ABOUT 3.2 MI (5.1 KM) NORTHEAST OF WATERLOO,
 JV0910'1.6 MI (2.6 KM) SOUTHWEST OF ELKRIDGE AND 0.9 MI (1.4 KM)
 JV0910'WEST-NORTHWEST OF HANOVER.
 JV0910'
 JV0910'TO REACH FROM THE BALTIMORE AND OHIO RAILROAD BRIDGE IN ELKRIDGE, GO
 JV0910'SOUTH ALONG US HIGHWAY 1 FOR 1.8 MI (2.9 KM) TO THE MARK ON THE RIGHT.
 JV0910'IT IS ABOUT 250 FT (76.2 M) SOUTH OF THE JUNCTION OF HUNT CLUB ROAD,
 JV0910'50.2 FT (15.3 M) SOUTHEAST OF THE SOUTHEAST CORNER OF BUILDING NUMBER
 JV0910'6600, 46.5 FT (14.2 M) WEST OF THE CENTERLINE OF THE HIGHWAY, 34.5 FT
 JV0910'(10.5 M) NORTH OF TELEPHONE POLE NUMBER 1, 0.5 FT (0.2 M) SOUTHEAST OF
 JV0910'A FIBERGLASS WITNESS POST AND SET IN THE TOP OF A 6-IN (15 CM) ROUND
 JV0910'CONCRETE POST.
 JV0910
 JV0910                          STATION RECOVERY (2011)
 JV0910
 JV0910'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 JV0910'RECOVERED BY WRA
 JV0910'DESCRIPTION IS ADEQUATE
 JV0910
 JV0910                          STATION RECOVERY (2017)
 JV0910
 JV0910'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (LHB)
 JV0910'THE MARK IS 33 FT (10.1 M) NORTH-NORTHEAST FROM UTILITY POLE NUMBER
 JV0910'235170, 16 FT (4.9 M) NORTHEAST OF THE CENTERLINE OF AMBEMANS ROAD AND
 JV0910'24 FT (7.3 M) WEST-SOUTHWEST OF FIRE HYDRANT.
 JV0910
 JV0910                          STATION RECOVERY (2017)
 JV0910
 JV0910'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (RWA)
 JV0910'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1877 ***********************************************************************
 HU1877  DESIGNATION -  HAS
 HU1877  PID         -  HU1877
 HU1877  STATE/COUNTY-  MD/SOMERSET
 HU1877  COUNTRY     -  US
 HU1877  USGS QUAD   -  MARION (2016)
 HU1877
 HU1877                         *CURRENT SURVEY CONTROL
 HU1877  ______________________________________________________________________
 HU1877* NAD 83(1993) POSITION- 38 03 34.63445(N) 075 52 19.15281(W)   ADJUSTED
 HU1877* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1877  ______________________________________________________________________
 HU1877  GEOID HEIGHT    -        -35.980 (meters)                     GEOID18
 HU1877  LAPLACE CORR    -         -1.50  (seconds)                    DEFLEC18
 HU1877  HORZ ORDER      -  THIRD
 HU1877
 HU1877.The horizontal coordinates were established by classical geodetic methods
 HU1877.and adjusted by the National Geodetic Survey in November 1994.
 HU1877
 HU1877.The orthometric height was scaled from a topographic map.
 HU1877
 HU1877.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1877.GEOID18 height accuracy estimate available here.
 HU1877
 HU1877.Click photographs - Photos may exist for this station.
 HU1877
 HU1877.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1877
 HU1877. The following values were computed from the NAD 83(1993) position.
 HU1877
 HU1877;                    North         East     Units Scale Factor Converg.
 HU1877;SPC MD       -    44,231.792   498,998.382   MT  1.00005051   +0 42 28.7
 HU1877;SPC MD       -   145,117.14  1,637,130.52   sFT  1.00005051   +0 42 28.7
 HU1877;UTM  18      - 4,212,788.964   423,503.188   MT  0.99967207   -0 32 15.3
 HU1877
 HU1877!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1877!SPC MD       -   1.00000569  x   1.00005051  =   1.00005620
 HU1877!UTM  18      -   1.00000569  x   0.99967207  =   0.99967776
 HU1877
 HU1877:                Primary Azimuth Mark                     Grid Az
 HU1877:SPC MD       -  MOON                                     086 53 48.3
 HU1877:UTM  18      -  MOON                                     088 08 32.3
 HU1877
 HU1877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2350312788(NAD 83)
 HU1877
 HU1877|---------------------------------------------------------------------|
 HU1877| PID    Reference Object                     Distance      Geod. Az  |
 HU1877|                                                           dddmmss.s |
 HU1877| DC7373 HAS RM                                5.200 METERS 07424     |
 HU1877| HU1882 MOON                                APPROX. 6.3 KM 0873617.0 |
 HU1877| HU1880 COLBURN                             APPROX. 6.2 KM 1000616.9 |
 HU1877|---------------------------------------------------------------------|
 HU1877
 HU1877                          SUPERSEDED SURVEY CONTROL
 HU1877
 HU1877  NAD 83(1991)-  38 03 34.63317(N)    075 52 19.15631(W) AD(       ) 3
 HU1877  NAD 83(1986)-  38 03 34.63336(N)    075 52 19.17501(W) AD(       ) 3
 HU1877  NAD 27      -  38 03 34.19000(N)    075 52 20.42500(W) AD(       ) 3
 HU1877  USSD        -  38 03 34.54600(N)    075 52 20.15000(W) AD(       ) 3
 HU1877
 HU1877.Superseded values are not recommended for survey control.
 HU1877
 HU1877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1877.See file dsdata.pdf to determine how the superseded data were derived.
 HU1877
 HU1877_MARKER: N = NAIL
 HU1877_SETTING: 0 = UNSPECIFIED SETTING
 HU1877
 HU1877  HISTORY     - Date     Condition        Report By
 HU1877  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1877  HISTORY     - 1949     MARK NOT FOUND   CGS
 HU1877
 HU1877                          STATION DESCRIPTION
 HU1877
 HU1877'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1877'STATION IS ON THE EASTERN SHORE OF TANGIER SOUND, ON POINT AT N
 HU1877'SIDE OF BIG ANNEMESSEX RIVER, ABOUT HALFWAY BETWEEN PORPOISE
 HU1877'POINT AND TWO MOUTH CREEK.  IT IS ON SAND DUNE, ABOUT 10 FEET
 HU1877'ABOVE AND 30 YARDS BACK FROM HIGH-WATER MARK TO W.  A POOL
 HU1877'AVERAGING 40 BY 100 FEET STANDS 50 FEET E OF THE STATION.  CENTER
 HU1877'MARK IS A NAIL IN A PINE STUB WITH TOP FLUSH WITH GROUND.
 HU1877'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HU1877'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HU1877'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HU1877'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HU1877'TOP OF POST.  IT IS 5.21 METERS (17.09 FEET) FROM THE
 HU1877'STATION, N 16 DEG 36 MIN W.  OTHER DISTANCES AND
 HU1877'BEARINGS ARE AS FOLLOWS--TANGENT TO POINT OF LAND, 1/8 MILE,N 83
 HU1877'DEG 46 MIN W.  CHIMNEY OF HOUSE AMONG TREES, 1-3/8 MILES, N 03
 HU1877'DEG 38 MIN W.  RIGHT END OF WHITE HOUSE ROOF, 2 MILES N 22 DEG
 HU1877'06 MIN E.  CHIMNEY OF LARGE UNPAINTED HOUSE, 3/4 MILE, N 33 DEG 58
 HU1877'MIN E.
 HU1877
 HU1877                          STATION RECOVERY (1949)
 HU1877
 HU1877'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1949 (EBL)
 HU1877'IT IS RECOMMENDED THAT THIS STATION BE CONSIDERED LOST BECAUSE
 HU1877'OF EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9698 ***********************************************************************
 HV9698  DESIGNATION -  HASSLER
 HV9698  PID         -  HV9698
 HV9698  STATE/COUNTY-  MD/MONTGOMERY
 HV9698  COUNTRY     -  US
 HV9698  USGS QUAD   -  WASHINGTON WEST (2016)
 HV9698
 HV9698                         *CURRENT SURVEY CONTROL
 HV9698  ______________________________________________________________________
 HV9698* NAD 83(2011) POSITION- 38 59 34.03341(N) 077 01 52.39121(W)   NO CHECK
 HV9698* NAD 83(2011) ELLIP HT-    64.885 (meters)        (06/27/12)   NO CHECK
 HV9698* NAD 83(2011) EPOCH   -  2010.00
 HV9698* NAVD 88 ORTHO HEIGHT -    96.882 (meters)      317.85  (feet) ADJUSTED
 HV9698  ______________________________________________________________________
 HV9698  GEOID HEIGHT    -        -31.967 (meters)                     GEOID18
 HV9698  NAD 83(2011) X  -  1,113,994.810 (meters)                     COMP
 HV9698  NAD 83(2011) Y  - -4,837,265.412 (meters)                     COMP
 HV9698  NAD 83(2011) Z  -  3,991,735.520 (meters)                     COMP
 HV9698  LAPLACE CORR    -         -2.72  (seconds)                    DEFLEC18
 HV9698  DYNAMIC HEIGHT  -         96.829 (meters)      317.68  (feet) COMP
 HV9698  MODELED GRAVITY -    980,085.9   (mgal)                       NAVD 88
 HV9698
 HV9698  VERT ORDER      -  FIRST     CLASS II
 HV9698
 HV9698  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9698  Standards:
 HV9698         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9698            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9698  -------------------------------------------------------------------
 HV9698  NETWORK  278.93 110.72          57.57 132.02  56.49     -0.88164562
 HV9698  -------------------------------------------------------------------
 HV9698  Click here for local accuracies and other accuracy information.
 HV9698
 HV9698.The horizontal coordinates were established by GPS observations
 HV9698.and adjusted by the National Geodetic Survey in June 2012.
 HV9698
 HV9698.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9698.been affixed to the stable North American tectonic plate. See 
 HV9698.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9698
 HV9698.The horizontal coordinates are valid at the epoch date displayed above
 HV9698.which is a decimal equivalence of Year/Month/Day.
 HV9698
 HV9698.No horizontal observational check was made to the station.
 HV9698
 HV9698.The orthometric height was determined by differential leveling and
 HV9698.adjusted by the NATIONAL GEODETIC SURVEY
 HV9698.in November 1993.
 HV9698
 HV9698.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9698.GEOID18 height accuracy estimate available here.
 HV9698
 HV9698.Click photographs - Photos may exist for this station.
 HV9698
 HV9698.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9698
 HV9698.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9698
 HV9698.The ellipsoidal height was determined by GPS observations
 HV9698.and is referenced to NAD 83.
 HV9698
 HV9698.The dynamic height is computed by dividing the NAVD 88
 HV9698.geopotential number by the normal gravity value computed on the
 HV9698.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV9698.degrees latitude (g = 980.6199 gals.).
 HV9698
 HV9698.The modeled gravity was interpolated from observed gravity values.
 HV9698
 HV9698. The following values were computed from the NAD 83(2011) position.
 HV9698
 HV9698;                    North         East     Units Scale Factor Converg.
 HV9698;SPC MD       -   147,205.961   397,295.398   MT  0.99995193   -0 01 10.5
 HV9698;SPC MD       -   482,958.22  1,303,459.98   sFT  0.99995193   -0 01 10.5
 HV9698;UTM  18      - 4,317,938.641   324,087.506   MT  0.99998105   -1 16 42.3
 HV9698
 HV9698!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9698!SPC MD       -   0.99998982  x   0.99995193  =   0.99994175
 HV9698!UTM  18      -   0.99998982  x   0.99998105  =   0.99997087
 HV9698
 HV9698_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2408717938(NAD 83)
 HV9698
 HV9698                          SUPERSEDED SURVEY CONTROL
 HV9698
 HV9698  NAD 83(2007)-  38 59 34.03358(N)    077 01 52.39200(W) AD(2002.00) 0
 HV9698  ELLIP H (02/10/07)   64.912  (m)                       GP(2002.00)    
 HV9698  NAD 83(1991)-  38 59 34.03378(N)    077 01 52.39173(W) AD(       ) 1
 HV9698  ELLIP H (09/11/02)   64.904  (m)                       GP(       ) 4 2
 HV9698  NAVD 88              96.88   (m)          317.8    (f) LEVELING    3  
 HV9698  NGVD 29 (11/17/93)   97.096  (m)          318.56   (f) ADJUSTED    1 2
 HV9698
 HV9698.Superseded values are not recommended for survey control.
 HV9698
 HV9698.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9698.See file dsdata.pdf to determine how the superseded data were derived.
 HV9698
 HV9698_MARKER: DS = TRIANGULATION STATION DISK
 HV9698_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 HV9698+WITH SETTING: PAVEMENT
 HV9698_SP_SET: MARBLE MONUMENT
 HV9698_STAMPING: HASSLER 1993
 HV9698_MARK LOGO: CGS
 HV9698_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV9698_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9698+STABILITY: SURFACE MOTION
 HV9698_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV9698+SATELLITE: SATELLITE OBSERVATIONS - April 23, 2023
 HV9698
 HV9698  HISTORY     - Date     Condition        Report By
 HV9698  HISTORY     - 1993     MONUMENTED       NGS
 HV9698  HISTORY     - 20040610 GOOD             NGS
 HV9698  HISTORY     - 20090322 GOOD             GEOCAC
 HV9698  HISTORY     - 20190916 GOOD             INDIV
 HV9698  HISTORY     - 20220720 GOOD             NGS
 HV9698  HISTORY     - 20230423 GOOD             WSRR
 HV9698
 HV9698                          STATION DESCRIPTION
 HV9698
 HV9698'DESCRIBED BY NATIONAL GEODETIC SURVEY 1993
 HV9698'THE STATION IS LOCATED AT THE NOAA SILVER SPRING METRO CENTER (SSMC)AT
 HV9698'1315 EAST-WEST HIGHWAY, SILVER SPRING, MARYLAND. OWNERSHIP--U.S.
 HV9698'GOVERNMENT (GSA) AND LEASED TO NOAA.  CONTACT THE NOAA FACILITIES
 HV9698'OFFICE, TELEPHONE NUMBER (301) 713-2227.
 HV9698'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 410 (EAST-WEST
 HV9698'HIGHWAY) AND U.S. HIGHWAY 29 (COLESVILLE ROAD) IN SILVER SPRING, GO
 HV9698'EAST ON EAST-WEST HIGHWAY FOR ABOUT 1/2 BLOCK TO HASSLER PARK AND THE
 HV9698'STATION ON THE LEFT BETWEEN SSMC BUILDING 2 AND SSMC BUILDING 3.
 HV9698'THE STATION IS A COAST AND GEODETIC SURVEY TRIANGULATION STATION DISK
 HV9698'EPOXIED INTO A DRILL HOLE IN THE TOP OF A MARBLE MONUMENT PROJECTING
 HV9698'1.2 M (3.9 FT) ABOVE THE GROUND.  LOCATED 12.1 M (39.7 FT) NORTHEAST
 HV9698'OF THE EAST CURB OF EAST-WEST HIGHWAY, 4.6 M (15.1 FT) WEST OF A 1.4
 HV9698'BY 1.4-FOOT STORM DRAIN, 3.8 M (12.5 FT) SOUTHWEST OF THE CENTER OF A
 HV9698'STREET LIGHT, AND 3.8 M (12.5 FT) NORTHWEST OF THE CENTER OF A STREET
 HV9698'LIGHT.  NOTE--DEPTH OF MARBLE MONUMENT IS UNKNOWN.
 HV9698
 HV9698                          STATION RECOVERY (2004)
 HV9698
 HV9698'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2004 (DW)
 HV9698'RECOVERED IN GOOD CONDITION.
 HV9698
 HV9698                          STATION RECOVERY (2009)
 HV9698
 HV9698'RECOVERY NOTE BY GEOCACHING 2009 (LPC)
 HV9698'RECOVERED IN GOOD CONDITION.
 HV9698
 HV9698                          STATION RECOVERY (2019)
 HV9698
 HV9698'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2019 (MFM)
 HV9698'RECOVERED AS DESCRIBED.  CONSIDERING THIS MARK IS BETWEEN NOAA
 HV9698'BUILDINGS NO. 2 AND NO. 3, IF HELP IS NEEDED IN RECOVER, THERE SHOULD
 HV9698'BE PLENTY OF PEOPLE AVAILABLE TO HELP.
 HV9698
 HV9698                          STATION RECOVERY (2022)
 HV9698
 HV9698'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2022 (PD)
 HV9698'RECOVERED IN GOOD CONDITION.
 HV9698
 HV9698                          STATION RECOVERY (2023)
 HV9698
 HV9698'RECOVERY NOTE BY WALKERSVILLE SOUTHERN RR 2023 (MM)
 HV9698'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4955 ***********************************************************************
 HV4955  DESIGNATION -  HATTON
 HV4955  PID         -  HV4955
 HV4955  STATE/COUNTY-  MD/PRINCE GEORGES
 HV4955  COUNTRY     -  US
 HV4955  USGS QUAD   -  MOUNT VERNON (2019)
 HV4955
 HV4955                         *CURRENT SURVEY CONTROL
 HV4955  ______________________________________________________________________
 HV4955* NAD 83(1993) POSITION- 38 43 14.80683(N) 077 01 52.47142(W)   ADJUSTED
 HV4955* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV4955  ______________________________________________________________________
 HV4955  GEOID HEIGHT    -        -32.418 (meters)                     GEOID18
 HV4955  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 HV4955  HORZ ORDER      -  THIRD
 HV4955
 HV4955.The horizontal coordinates were established by classical geodetic methods
 HV4955.and adjusted by the National Geodetic Survey in November 1994.
 HV4955
 HV4955.The orthometric height was scaled from a topographic map.
 HV4955
 HV4955.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4955.GEOID18 height accuracy estimate available here.
 HV4955
 HV4955.Click photographs - Photos may exist for this station.
 HV4955
 HV4955.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4955
 HV4955. The following values were computed from the NAD 83(1993) position.
 HV4955
 HV4955;                    North         East     Units Scale Factor Converg.
 HV4955;SPC MD       -   117,011.160   397,283.134   MT  0.99995349   -0 01 10.6
 HV4955;SPC MD       -   383,894.11  1,303,419.75   sFT  0.99995349   -0 01 10.6
 HV4955;SPC VA N     - 2,118,027.201 3,627,719.934   MT  0.99995000   +0 55 00.0
 HV4955;SPC VA N     - 6,948,894.24 11,901,944.48   sFT  0.99995000   +0 55 00.0
 HV4955;UTM  18      - 4,287,750.396   323,413.857   MT  0.99998400   -1 16 15.3
 HV4955
 HV4955!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4955!SPC MD       -   1.00000419  x   0.99995349  =   0.99995768
 HV4955!SPC VA N     -   1.00000419  x   0.99995000  =   0.99995419
 HV4955!UTM  18      -   1.00000419  x   0.99998400  =   0.99998819
 HV4955
 HV4955:                Primary Azimuth Mark                     Grid Az
 HV4955:SPC MD       -  SPIT                                     303 54 33.7
 HV4955:SPC VA N     -  SPIT                                     302 58 23.1
 HV4955:UTM  18      -  SPIT                                     305 09 38.4
 HV4955
 HV4955_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2341387750(NAD 83)
 HV4955
 HV4955|---------------------------------------------------------------------|
 HV4955| PID    Reference Object                     Distance      Geod. Az  |
 HV4955|                                                           dddmmss.s |
 HV4955| HV4970 RIVER                               463.881 METERS 0035139.5 |
 HV4955| DC6332 HATTON RM                            23.250 METERS 01251     |
 HV4955| HV4972 SHERIDAN PT LIGHT                   APPROX. 2.1 KM 2235715.2 |
 HV4955| HV4916 FORT HUNT YELLOW WATER TANK         APPROX. 1.6 KM 2521155.3 |
 HV4955| HV4930 SPIT                                APPROX. 1.1 KM 3035323.1 |
 HV4955|---------------------------------------------------------------------|
 HV4955
 HV4955                          SUPERSEDED SURVEY CONTROL
 HV4955
 HV4955  NAD 83(1991)-  38 43 14.80481(N)    077 01 52.47335(W) AD(       ) 3
 HV4955  NAD 83(1986)-  38 43 14.80667(N)    077 01 52.48619(W) AD(       ) 3
 HV4955  NAD 27      -  38 43 14.38600(N)    077 01 53.57600(W) AD(       ) 3
 HV4955
 HV4955.Superseded values are not recommended for survey control.
 HV4955
 HV4955.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4955.See file dsdata.pdf to determine how the superseded data were derived.
 HV4955
 HV4955_MARKER: DS = TRIANGULATION STATION DISK
 HV4955_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4955_STAMPING: HATTON 1928
 HV4955_MARK LOGO: CGS
 HV4955_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4955+STABILITY: SURFACE MOTION
 HV4955
 HV4955  HISTORY     - Date     Condition        Report By
 HV4955  HISTORY     - 1928     MONUMENTED       CGS
 HV4955  HISTORY     - 1943     GOOD             CGS
 HV4955  HISTORY     - 1956     MARK NOT FOUND   AMS
 HV4955
 HV4955                          STATION DESCRIPTION
 HV4955
 HV4955'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4955'STATION IS ON THE E SHORE OF POTOMAC RIVER ON HATTON POINT, AT
 HV4955'THE EDGE OF THE HIGH-WATER LINE AND AT THE FOOT OF AN ABRUPT
 HV4955'BLUFF (GRAVEL, CLAY) THAT SHOWS PROMINENTLY FROM THE
 HV4955'CHANNEL.  RIVERVIEW DOCK IS JUST N OF STATION, AND S CORNER OF
 HV4955'ABUTMENT WALL IS 132 METERS (ALONG THE BEACH) N OF STATION.  AN
 HV4955'OLD CONCRETE BREAKWATER WALL AT HIGH-WATER LINE RUNS S FOR 50
 HV4955'METERS FROM RIVERVIEW DOCK.  MARK PROJECTS SEVERAL INCHES ABOVE
 HV4955'SURFACE AND STAMPED HATTON 1928.  MARK COVERED ABOUT 2 INCHES
 HV4955'AT HIGHER WATERS.
 HV4955'
 HV4955'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV4955'CONCRETE.
 HV4955'
 HV4955'REFERENCE MARK IS N OF STATION AT EDGE OF HIGH-WATER LINE AND
 HV4955'AT FOOT OF STEEP WOODED BLUFF.  MARK PROJECTS 6 INCHES ABOVE
 HV4955'SURFACE STAMPED HATTON 1928.
 HV4955'
 HV4955'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV4955
 HV4955                          STATION RECOVERY (1943)
 HV4955
 HV4955'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV4955'RECOVERED AS DESCRIBED.  THE UPPER PORTION OF THE STATION HAS
 HV4955'BEEN BROKEN OFF.  HOWEVER, THE LOWER PORTION OF THE MONUMENT
 HV4955'REMAINS IN PLACE AND IS IN GOOD CONDITION.
 HV4955
 HV4955                          STATION RECOVERY (1956)
 HV4955
 HV4955'RECOVERY NOTE BY US ARMY MAP SERVICE (NOW DMA) 1956
 HV4955'STATION MARK NOT FOUND.  REFERENCE MARK WAS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2145 ***********************************************************************
 HU2145  DESIGNATION -  HATTON AZ MK 3
 HU2145  PID         -  HU2145
 HU2145  STATE/COUNTY-  MD/WICOMICO
 HU2145  COUNTRY     -  US
 HU2145  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2145
 HU2145                         *CURRENT SURVEY CONTROL
 HU2145  ______________________________________________________________________
 HU2145* NAD 83(1991) POSITION- 38 26 34.91707(N) 075 45 59.13540(W)   ADJUSTED
 HU2145* NAVD 88 ORTHO HEIGHT -     7.121 (meters)       23.36  (feet) ADJUSTED
 HU2145  ______________________________________________________________________
 HU2145  GEOID HEIGHT    -        -35.591 (meters)                     GEOID18
 HU2145  LAPLACE CORR    -         -1.67  (seconds)                    DEFLEC18
 HU2145  DYNAMIC HEIGHT  -          7.117 (meters)       23.35  (feet) COMP
 HU2145  MODELED GRAVITY -    980,013.6   (mgal)                       NAVD 88
 HU2145
 HU2145  HORZ ORDER      -  SECOND
 HU2145  VERT ORDER      -  SECOND    CLASS I
 HU2145
 HU2145.The horizontal coordinates were established by classical geodetic methods
 HU2145.and adjusted by the National Geodetic Survey in January 1992.
 HU2145
 HU2145.The orthometric height was determined by differential leveling and
 HU2145.adjusted by the NATIONAL GEODETIC SURVEY
 HU2145.in June 1991.
 HU2145
 HU2145.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2145.GEOID18 height accuracy estimate available here.
 HU2145
 HU2145.Click photographs - Photos may exist for this station.
 HU2145
 HU2145.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2145
 HU2145.The dynamic height is computed by dividing the NAVD 88
 HU2145.geopotential number by the normal gravity value computed on the
 HU2145.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2145.degrees latitude (g = 980.6199 gals.).
 HU2145
 HU2145.The modeled gravity was interpolated from observed gravity values.
 HU2145
 HU2145. The following values were computed from the NAD 83(1991) position.
 HU2145
 HU2145;                    North         East     Units Scale Factor Converg.
 HU2145;SPC MD       -    86,907.381   507,687.105   MT  0.99997820   +0 46 27.2
 HU2145;SPC MD       -   285,128.63  1,665,636.78   sFT  0.99997820   +0 46 27.2
 HU2145;UTM  18      - 4,255,250.395   433,116.177   MT  0.99965509   -0 28 35.5
 HU2145
 HU2145!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2145!SPC MD       -   1.00000447  x   0.99997820  =   0.99998267
 HU2145!UTM  18      -   1.00000447  x   0.99965509  =   0.99965956
 HU2145
 HU2145_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3311655250(NAD 83)
 HU2145
 HU2145                          SUPERSEDED SURVEY CONTROL
 HU2145
 HU2145  NAD 83(1986)-  38 26 34.91398(N)    075 45 59.15670(W) AD(       ) 2
 HU2145  NGVD 29 (06/12/91)    7.366  (m)           24.17   (f) ADJUSTED    2 1
 HU2145  NGVD 29 (03/28/90)    7.6    (m)           25.     (f) VERT ANG       
 HU2145
 HU2145.Superseded values are not recommended for survey control.
 HU2145
 HU2145.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2145.See file dsdata.pdf to determine how the superseded data were derived.
 HU2145
 HU2145_MARKER: DZ = AZIMUTH MARK DISK
 HU2145_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2145_STAMPING: HATTON 1934 NO 3 1981
 HU2145_MARK LOGO: NGS
 HU2145_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2145_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2145+STABILITY: SURFACE MOTION
 HU2145_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2145+SATELLITE: SATELLITE OBSERVATIONS - March 07, 1990
 HU2145
 HU2145  HISTORY     - Date     Condition        Report By
 HU2145  HISTORY     - 1981     MONUMENTED       NGS
 HU2145  HISTORY     - 19900307 GOOD             NGS
 HU2145
 HU2145                          STATION DESCRIPTION
 HU2145
 HU2145'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2145'1.6 KM (0.99 MI) SOUTHWESTERLY ALONG ATHOL ROAD FROM THE JUNCTION OF
 HU2145'BRIDGE STREET IN MARDELA SPRINGS, AT A HIGHLINE CROSSING, 21.6 M
 HU2145'(70.87 FT) SOUTHEAST OF THE CENTERLINE OF THE ROAD, 0.5 M (1.64 FT)
 HU2145'NORTHEAST OF THE MOST SOUTHWESTERLY 1 OF 2 CONCRETE UTILITY POLES,
 HU2145'0.4 M (1.31 FT) NORTHWEST OF A WITNESS POST, LEVEL WITH THE ROAD, AND
 HU2145'IN A CONCRETE MONUMENT THAT PROJECTS 0.1 M (0.33 FT) ABOVE THE GROUND
 HU2145'SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2144 ***********************************************************************
 HU2144  DESIGNATION -  HATTON RESET
 HU2144  PID         -  HU2144
 HU2144  STATE/COUNTY-  MD/WICOMICO
 HU2144  COUNTRY     -  US
 HU2144  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU2144
 HU2144                         *CURRENT SURVEY CONTROL
 HU2144  ______________________________________________________________________
 HU2144* NAD 83(1991) POSITION- 38 26 47.15639(N) 075 45 46.46117(W)   ADJUSTED
 HU2144* NAVD 88 ORTHO HEIGHT -     6.421 (meters)       21.07  (feet) ADJUSTED
 HU2144  ______________________________________________________________________
 HU2144  GEOID HEIGHT    -        -35.591 (meters)                     GEOID18
 HU2144  LAPLACE CORR    -         -1.68  (seconds)                    DEFLEC18
 HU2144  DYNAMIC HEIGHT  -          6.417 (meters)       21.05  (feet) COMP
 HU2144  MODELED GRAVITY -    980,013.8   (mgal)                       NAVD 88
 HU2144
 HU2144  HORZ ORDER      -  SECOND
 HU2144  VERT ORDER      -  SECOND    CLASS I
 HU2144
 HU2144.The horizontal coordinates were established by classical geodetic methods
 HU2144.and adjusted by the National Geodetic Survey in January 1992.
 HU2144
 HU2144.The orthometric height was determined by differential leveling and
 HU2144.adjusted by the NATIONAL GEODETIC SURVEY
 HU2144.in June 1991.
 HU2144
 HU2144.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2144.GEOID18 height accuracy estimate available here.
 HU2144
 HU2144.Click photographs - Photos may exist for this station.
 HU2144
 HU2144.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2144
 HU2144.The dynamic height is computed by dividing the NAVD 88
 HU2144.geopotential number by the normal gravity value computed on the
 HU2144.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2144.degrees latitude (g = 980.6199 gals.).
 HU2144
 HU2144.The modeled gravity was interpolated from observed gravity values.
 HU2144
 HU2144. The following values were computed from the NAD 83(1991) position.
 HU2144
 HU2144;                    North         East     Units Scale Factor Converg.
 HU2144;SPC MD       -    87,288.893   507,989.311   MT  0.99997775   +0 46 35.2
 HU2144;SPC MD       -   286,380.31  1,666,628.26   sFT  0.99997775   +0 46 35.2
 HU2144;UTM  18      - 4,255,625.098   433,426.539   MT  0.99965458   -0 28 27.8
 HU2144
 HU2144!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2144!SPC MD       -   1.00000458  x   0.99997775  =   0.99998233
 HU2144!UTM  18      -   1.00000458  x   0.99965458  =   0.99965916
 HU2144
 HU2144:                Primary Azimuth Mark                     Grid Az
 HU2144:SPC MD       -  HATTON AZ MK RESET                       222 31 52.2
 HU2144:UTM  18      -  HATTON AZ MK RESET                       223 46 55.2
 HU2144
 HU2144_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3342655625(NAD 83)
 HU2144
 HU2144|---------------------------------------------------------------------|
 HU2144| PID    Reference Object                     Distance      Geod. Az  |
 HU2144|                                                           dddmmss.s |
 HU2144| HU2623 HATTON RM 4                          30.648 METERS 08920     |
 HU2144| HU2622 HATTON RM 1                          37.524 METERS 10800     |
 HU2144| HU2624 HATTON RM 5                           9.916 METERS 16939     |
 HU2144| HU2145 HATTON AZ MK 3                      486.714 METERS 2190936.6 |
 HU2144| DC7375 HATTON RM 2                          44.257 METERS 22123     |
 HU2144| DC7374 HATTON AZ MK RESET                                 2231827.4 |
 HU2144| DC7376 HATTON RM 3 AZIMUTH                                2231827.3 |
 HU2144| HU1918 VIENNA WATER TANK                   APPROX. 6.8 KM 3074258.0 |
 HU2144| HU1919 VIENNA W PWRLINE MST CEN TOP        APPROX. 6.7 KM 3095339.4 |
 HU2144| HU1922 VIENNA E PWRLINE MST CEN TOP        APPROX. 6.4 KM 3101308.5 |
 HU2144|---------------------------------------------------------------------|
 HU2144
 HU2144                          SUPERSEDED SURVEY CONTROL
 HU2144
 HU2144  NAD 83(1986)-  38 26 47.15323(N)    075 45 46.48234(W) AD(       ) 2
 HU2144  NAD 27      -  38 26 46.73200(N)    075 45 47.72800(W) AD(       ) 2
 HU2144  NGVD 29 (06/12/91)    6.666  (m)           21.87   (f) ADJUSTED    2 1
 HU2144  NGVD 29               6.91   (m)           22.7    (f) LEVELING    3  
 HU2144
 HU2144.Superseded values are not recommended for survey control.
 HU2144
 HU2144.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2144.See file dsdata.pdf to determine how the superseded data were derived.
 HU2144
 HU2144_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2144_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2144_STAMPING: HATTON 1934 1981
 HU2144_MARK LOGO: NGS
 HU2144_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2144_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2144+STABILITY: SURFACE MOTION
 HU2144_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2144+SATELLITE: SATELLITE OBSERVATIONS - March 07, 1990
 HU2144
 HU2144  HISTORY     - Date     Condition        Report By
 HU2144  HISTORY     - 1981     MONUMENTED       NGS
 HU2144  HISTORY     - 19900307 GOOD             NGS
 HU2144
 HU2144                          STATION DESCRIPTION
 HU2144
 HU2144'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2144'1.1 KM (0.68 MI) SOUTHWESTERLY ALONG ATHOL ROAD FROM THE JUNCTION OF
 HU2144'BRIDGE STREET IN MARDELA SPRINGS, THENCE 0.1 KM (0.06 MI) NORTHERLY
 HU2144'ALONG A FARM LANE, 18.6 M (61.02 FT) WEST OF THE CENTER OF THE LANE,
 HU2144'11.8 M (38.71 FT) WEST-SOUTHWEST OF THE SOUTHEAST CORNER OF A BLOCK
 HU2144'BUILDING, 10.3 M (33.79 FT) NORTH-NORTHEAST OF THE NORTHWEST CORNER
 HU2144'OF A BARN, 4.3 M (14.11 FT) SOUTHEAST OF THE SOUTHWEST CORNER OF THE
 HU2144'BUILDING, LEVEL WITH THE LANE, AND IN A CONCRETE MONUMENT THAT IS
 HU2144'FLUSH WITH THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1927 ***********************************************************************
 HU1927  DESIGNATION -  HAVEN
 HU1927  PID         -  HU1927
 HU1927  STATE/COUNTY-  MD/SOMERSET
 HU1927  COUNTRY     -  US
 HU1927  USGS QUAD   -  WETIPQUIN (2016)
 HU1927
 HU1927                         *CURRENT SURVEY CONTROL
 HU1927  ______________________________________________________________________
 HU1927* NAD 83(1991) POSITION- 38 16 10.45683(N) 075 46 27.02083(W)   ADJUSTED
 HU1927* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1927  ______________________________________________________________________
 HU1927  GEOID HEIGHT    -        -35.851 (meters)                     GEOID18
 HU1927  LAPLACE CORR    -         -1.36  (seconds)                    DEFLEC18
 HU1927  HORZ ORDER      -  THIRD
 HU1927
 HU1927.The horizontal coordinates were established by classical geodetic methods
 HU1927.and adjusted by the National Geodetic Survey in January 1992.
 HU1927
 HU1927.The orthometric height was scaled from a topographic map.
 HU1927
 HU1927.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1927.GEOID18 height accuracy estimate available here.
 HU1927
 HU1927.Click photographs - Photos may exist for this station.
 HU1927
 HU1927.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1927
 HU1927. The following values were computed from the NAD 83(1991) position.
 HU1927
 HU1927;                    North         East     Units Scale Factor Converg.
 HU1927;SPC MD       -    67,645.429   507,269.492   MT  1.00000543   +0 46 09.7
 HU1927;SPC MD       -   221,933.38  1,664,266.66   sFT  1.00000543   +0 46 09.7
 HU1927;UTM  18      - 4,236,008.588   432,278.805   MT  0.99965648   -0 28 46.2
 HU1927
 HU1927!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1927!SPC MD       -   1.00000567  x   1.00000543  =   1.00001110
 HU1927!UTM  18      -   1.00000567  x   0.99965648  =   0.99966214
 HU1927
 HU1927:                Primary Azimuth Mark                     Grid Az
 HU1927:SPC MD       -  JONES                                    242 21 02.7
 HU1927:UTM  18      -  JONES                                    243 35 58.6
 HU1927
 HU1927_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3227836008(NAD 83)
 HU1927
 HU1927|---------------------------------------------------------------------|
 HU1927| PID    Reference Object                     Distance      Geod. Az  |
 HU1927|                                                           dddmmss.s |
 HU1927| DC7381 HAVEN RM 1                                         06411     |
 HU1927| DC7382 HAVEN RM 2                                         11036     |
 HU1927| HU1933 JONES                               APPROX. 4.5 KM 2430712.4 |
 HU1927| HU1931 WHITE HAVEN CHURCH 2                APPROX. 1.5 KM 2702810.5 |
 HU1927|---------------------------------------------------------------------|
 HU1927
 HU1927                          SUPERSEDED SURVEY CONTROL
 HU1927
 HU1927  NAD 83(1986)-  38 16 10.45417(N)    075 46 27.04437(W) AD(       ) 3
 HU1927  NAD 27      -  38 16 10.01900(N)    075 46 28.30200(W) AD(       ) 3
 HU1927
 HU1927.Superseded values are not recommended for survey control.
 HU1927
 HU1927.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1927.See file dsdata.pdf to determine how the superseded data were derived.
 HU1927
 HU1927_MARKER: DS = TRIANGULATION STATION DISK
 HU1927_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1927_STAMPING: HAVEN 1932
 HU1927_MARK LOGO: CGS
 HU1927_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1927+STABILITY: SURFACE MOTION
 HU1927
 HU1927  HISTORY     - Date     Condition        Report By
 HU1927  HISTORY     - 1932     MONUMENTED       CGS
 HU1927  HISTORY     - 1942     GOOD             CGS
 HU1927  HISTORY     - 1964     SEE DESCRIPTION  MDDT
 HU1927
 HU1927                          STATION DESCRIPTION
 HU1927
 HU1927'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1927'STATION IS ON THE S BANK OF THE WICOMICO RIVER, ABOUT 3/4 MILE E OF
 HU1927'WHITE HAVEN.  IT IS ON THE SOUTHERN EDGE OF PASTURE LAND, ABOUT 4
 HU1927'FEET ABOVE HIGH WATER AND 11 METERS FROM THE HIGH-WATER LINE.  A
 HU1927'FARMHOUSE STANDS 170 METERS DIRECTLY INLAND FROM THE STATION.
 HU1927'
 HU1927'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HU1927'CONCRETE, AS DESCRIBED IN NOTES 1A AND 11A.
 HU1927'
 HU1927'HEIGHT OF SIGNAL ABOVE STATION MARK - 3.0 METERS.
 HU1927
 HU1927                          STATION RECOVERY (1942)
 HU1927
 HU1927'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1927'THE FOLLOWING DISCREPANCY WAS NOTED IN THE FIELD WITH THE ORIGINAL
 HU1927'DESCRIPTION--
 HU1927'
 HU1927'(1) NORTHERN EDGE OF PASTURE LAND, NOT SOUTHERN EDGE.
 HU1927'
 HU1927'THE STATION IS LOCATED ON THE S BANK OF THE WICOMICO RIVER, ABOUT
 HU1927'3/4 MILE E OF WHITEHAVEN.  IT IS ON THE NORTHERN EDGE OF PASTURE
 HU1927'LAND, ABOUT 35 FEET FROM THE HIGH-WATER LINE, ON TOP OF A SMALL
 HU1927'BLUFF ABOUT 5 FEET HIGH, AND ABOUT 500 FEET DIRECTLY N OF A
 HU1927'FARMHOUSE.  THE STATION IS ON THE WESTERN EDGE OF A SMALL GROVE
 HU1927'OF CEDAR TREES 9.8 FEET FROM THE EDGE OF THE 5-FOOT BLUFF, 186
 HU1927'FEET W OF A SMALL GROUP OF CEDAR TREES, AND 223 FEET N OF A
 HU1927'SMALL PATCH OF SAND.  THE STATION IS A BRONZE DISK, STAMPED
 HU1927'HAVEN 1932, SET IN THE TOP OF AN 11-INCH SQUARE CONCRETE
 HU1927'MONUMENT, WHICH EXTENDS ABOUT 2 INCHES ABOVE THE SURFACE OF THE
 HU1927'GROUND.  THE STATION IS IN GOOD CONDITION.
 HU1927'
 HU1927'REFERENCE MARK NO.1 IS 41.09 FEET E OF THE STATION, 61.73 FEET
 HU1927'NE OF REFERENCE MARK NO.2, 4 FEET W OF A SMALL GROUP OF CEDAR TREES,
 HU1927'AND 37 FEET N OF THE N EDGE OF PASTURE LAND.  THE MARK IS A BRONZE
 HU1927'DISK, WITH THE ARROW POINTING TOWARD THE STATION, STAMPED HAVEN
 HU1927'1932 NO.1, SET IN THE TOP OF A 5-INCH SQUARE CONCRETE MONUMENT,
 HU1927'WHICH EXTENDS ABOUT 2 INCHES ABOVE THE SURFACE OF THE GROUND.
 HU1927'THE MARK IS IN GOOD CONDITION.
 HU1927'
 HU1927'REFERENCE MARK NO.2 IS 82.38 FEET SE OF THE STATION, 61.73 FEET
 HU1927'SW OF REFERENCE MARK NO.1, 2 FEET W OF A 20-INCH CEDAR TREE, AND
 HU1927'156 FEET SE OF THE INTERSECTION OF MARSH AND SHORELINES.  THE
 HU1927'MARK IS A BRONZE DISK, WITH THE ARROW POINTING TOWARD THE
 HU1927'STATION, STAMPED HAVEN 1932, NO.2, SET IN THE TOP OF A 5-INCH
 HU1927'SQUARE MONUMENT, WHICH EXTENDS ABOUT 2 INCHES ABOVE THE SURFACE
 HU1927'OF THE GROUND.  THE MARK IS IN GOOD CONDITION, EVEN THOUGH SOME
 HU1927'OF THE SURFACE CEMENT OF THE MONUMENT IS CHIPPED LOOSE.
 HU1927
 HU1927                          STATION RECOVERY (1964)
 HU1927
 HU1927'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1964
 HU1927'STATION MARK FOUND WASHED OUT OF THE SHORE LINE.  DISTANCE WAS
 HU1927'PULLED FROM R.M. 1 AND R.M. 2 AND THE POSITION OF UNDERGROUND MARK
 HU1927'WAS FOUND TO BE OVER THE BANK AND SHOULD BE CONSIDERED LOST ALSO.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6040 ***********************************************************************
 HV6040  DESIGNATION -  HAVEN
 HV6040  PID         -  HV6040
 HV6040  STATE/COUNTY-  MD/DORCHESTER
 HV6040  COUNTRY     -  US
 HV6040  USGS QUAD   -  OXFORD (2016)
 HV6040
 HV6040                         *CURRENT SURVEY CONTROL
 HV6040  ______________________________________________________________________
 HV6040* NAD 83(1991) POSITION- 38 37 45.64167(N) 076 10 10.63240(W)   ADJUSTED
 HV6040* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6040  ______________________________________________________________________
 HV6040  GEOID HEIGHT    -        -34.746 (meters)                     GEOID18
 HV6040  LAPLACE CORR    -         -4.10  (seconds)                    DEFLEC18
 HV6040  HORZ ORDER      -  THIRD
 HV6040
 HV6040.The horizontal coordinates were established by classical geodetic methods
 HV6040.and adjusted by the National Geodetic Survey in January 1992.
 HV6040
 HV6040.The orthometric height was scaled from a topographic map.
 HV6040
 HV6040.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6040.GEOID18 height accuracy estimate available here.
 HV6040
 HV6040.Click photographs - Photos may exist for this station.
 HV6040
 HV6040.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6040
 HV6040. The following values were computed from the NAD 83(1991) position.
 HV6040
 HV6040;                    North         East     Units Scale Factor Converg.
 HV6040;SPC MD       -   107,189.876   472,302.653   MT  0.99995905   +0 31 16.2
 HV6040;SPC MD       -   351,672.12  1,549,546.29   sFT  0.99995905   +0 31 16.2
 HV6040;UTM  18      - 4,276,294.658   398,192.685   MT  0.99972764   -0 43 48.8
 HV6040
 HV6040!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6040!SPC MD       -   1.00000549  x   0.99995905  =   0.99996454
 HV6040!UTM  18      -   1.00000549  x   0.99972764  =   0.99973313
 HV6040
 HV6040:                Primary Azimuth Mark                     Grid Az
 HV6040:SPC MD       -  HORN 1900                                135 42 20.5
 HV6040:UTM  18      -  HORN 1900                                136 57 25.5
 HV6040
 HV6040_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9819276294(NAD 83)
 HV6040
 HV6040|---------------------------------------------------------------------|
 HV6040| PID    Reference Object                     Distance      Geod. Az  |
 HV6040|                                                           dddmmss.s |
 HV6040| HV5907 HORN 1900                           APPROX. 3.6 KM 1361336.7 |
 HV6040|---------------------------------------------------------------------|
 HV6040
 HV6040                          SUPERSEDED SURVEY CONTROL
 HV6040
 HV6040  NAD 83(1986)-  38 37 45.63869(N)    076 10 10.64846(W) AD(       ) 3
 HV6040  NAD 27      -  38 37 45.20800(N)    076 10 11.87300(W) AD(       ) 3
 HV6040  USSD        -  38 37 45.60000(N)    076 10 11.67800(W) AD(       ) 3
 HV6040
 HV6040.Superseded values are not recommended for survey control.
 HV6040
 HV6040.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6040.See file dsdata.pdf to determine how the superseded data were derived.
 HV6040
 HV6040
 HV6040  HISTORY     - Date     Condition        Report By
 HV6040  HISTORY     - 1900     MONUMENTED       CGS
 HV6040  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6040
 HV6040                          STATION DESCRIPTION
 HV6040
 HV6040'DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6040'STATION LOCATED BY LATITUDE AND LONGITUDE ONLY.  LOCALITY VISITED BUT
 HV6040'STATION WAS NOT RECOVERED.  RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5138 ***********************************************************************
 JV5138  DESIGNATION -  HAVEN
 JV5138  PID         -  JV5138
 JV5138  STATE/COUNTY-  MD/KENT
 JV5138  COUNTRY     -  US
 JV5138  USGS QUAD   -  ROCK HALL (2016)
 JV5138
 JV5138                         *CURRENT SURVEY CONTROL
 JV5138  ______________________________________________________________________
 JV5138* NAD 83(1991) POSITION- 39 08 50.62683(N) 076 14 59.44838(W)   ADJUSTED
 JV5138* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5138  ______________________________________________________________________
 JV5138  GEOID HEIGHT    -        -33.327 (meters)                     GEOID18
 JV5138  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 JV5138  HORZ ORDER      -  THIRD
 JV5138
 JV5138.The horizontal coordinates were established by classical geodetic methods
 JV5138.and adjusted by the National Geodetic Survey in January 1992.
 JV5138
 JV5138.The orthometric height was scaled from a topographic map.
 JV5138
 JV5138.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5138.GEOID18 height accuracy estimate available here.
 JV5138
 JV5138.Click photographs - Photos may exist for this station.
 JV5138
 JV5138.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5138
 JV5138. The following values were computed from the NAD 83(1991) position.
 JV5138
 JV5138;                    North         East     Units Scale Factor Converg.
 JV5138;SPC MD       -   164,635.401   464,844.781   MT  0.99996105   +0 28 15.0
 JV5138;SPC MD       -   540,141.31  1,525,078.25   sFT  0.99996105   +0 28 15.0
 JV5138;UTM  18      - 4,333,877.271   391,996.722   MT  0.99974363   -0 47 20.9
 JV5138
 JV5138!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5138!SPC MD       -   1.00000527  x   0.99996105  =   0.99996632
 JV5138!UTM  18      -   1.00000527  x   0.99974363  =   0.99974890
 JV5138
 JV5138:                Primary Azimuth Mark                     Grid Az
 JV5138:SPC MD       -  RAIL                                     337 47 38.9
 JV5138:UTM  18      -  RAIL                                     339 03 14.8
 JV5138
 JV5138_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9199633877(NAD 83)
 JV5138
 JV5138|---------------------------------------------------------------------|
 JV5138| PID    Reference Object                     Distance      Geod. Az  |
 JV5138|                                                           dddmmss.s |
 JV5138| JV5142 TREASURE                            362.648 METERS 24912     |
 JV5138| JV5140 RAIL                                APPROX. 0.5 KM 3381553.9 |
 JV5138|---------------------------------------------------------------------|
 JV5138
 JV5138                          SUPERSEDED SURVEY CONTROL
 JV5138
 JV5138  NAD 83(1986)-  39 08 50.62098(N)    076 14 59.45919(W) AD(       ) 3
 JV5138  NAD 27      -  39 08 50.24100(N)    076 15 00.63600(W) AD(       ) 3
 JV5138  USSD        -  39 08 50.59100(N)    076 15 00.46500(W) AD(       ) 3
 JV5138
 JV5138.Superseded values are not recommended for survey control.
 JV5138
 JV5138.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5138.See file dsdata.pdf to determine how the superseded data were derived.
 JV5138
 JV5138_MARKER: Z = SEE DESCRIPTION
 JV5138_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5138_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5138+STABILITY: SURFACE MOTION
 JV5138
 JV5138  HISTORY     - Date     Condition        Report By
 JV5138  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5138  HISTORY     - 1934     MARK NOT FOUND   CGS
 JV5138  HISTORY     - 1939     GOOD             CGS
 JV5138  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5138
 JV5138                          STATION DESCRIPTION
 JV5138
 JV5138'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5138'ON THE EASTERN SHORE OF SWAN CREEK, AT NORTHERN SIDE OF ENTRANCE
 JV5138'TO THE HAVEN, ABOUT 5/8 MILE ENE OF ROCK HALL LANDING, ON A LONG
 JV5138'MARSH POINT ABOUT 2 FEET ABOVE HIGH WATER, 5 YARDS BACK FROM
 JV5138'HIGH-WATER MARK, AND 7 YARDS W AND 8 YARDS N OF LARGE PINE TREES.
 JV5138'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5138'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5138'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  SUBSURFACE
 JV5138'MARK IS CENTER OF 2-INCH TILE PIPE BURIED WITH THE TOP 2 INCHES
 JV5138'BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO VARIOUS
 JV5138'POINTS OF REFERENCE ARE AS FOLLOWS--THOMPSONS WINDMILL, 5/8 MILE,
 JV5138'S 61 DEG 51 MIN W.  S CHIMNEY OF BURGESSS HOUSE, 5/8 MILE, S 63
 JV5138'DEG 51 MIN W.  CHIMNEY OF TENANT HOUSE, 5/8 MILE, N 68 DEG 39
 JV5138'MIN W.  NAIL IN BLAZE IN 15-INCH OAK TREE, 9.82 METERS (32.22
 JV5138'FEET), N 36 DEG 9 MIN W.  S GABLE OF CORNCRIB, 1-1/4 MILES, N 20
 JV5138'DEG 52 MIN W.  NAIL IN BLAZE IN 18-INCH PINE TREE, 6.69 METERS
 JV5138'(21.95 FEET), N 51 DEG 9 MIN E.  N CHIMNEY OF SHAMOKINS HOUSE, 3/8
 JV5138'MILE, N 78 DEG 40 MIN E.  N CHIMNEY OF HOUSE, 1/4 MILE, S 70 DEG
 JV5138'54 MIN E.  NAIL IN BLAZE IN 18-INCH PINE TREE, 7.20 METERS (23.62
 JV5138'FEET), S 61 DEG 54 MIN E.  N GABLE OF HOUSE, 5/8 MILE, S 21 DEG 54
 JV5138'MIN E.
 JV5138
 JV5138                          STATION RECOVERY (1934)
 JV5138
 JV5138'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5138'THE STATION WAS SEARCHED FOR WITHOUT SUCCESS.  NONE OF THE PINE
 JV5138'TREES DESCRIBED IN THE ORIGINAL DESCRIPTION ARE STANDING.  NO ONE
 JV5138'COULD BE LOCATED NEARBY FOR QUESTIONING ABOUT THE STATION.  A
 JV5138'SMALL FISHING SHACK NOW STANDS ON THE POINT.
 JV5138
 JV5138                          STATION RECOVERY (1939)
 JV5138
 JV5138'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5138'STATION RECOVERED IN GOOD CONDITION.
 JV5138'
 JV5138'STATION IS ON THE EASTERN SHORE OF SWAN CREEK, AT THE N SIDE OF
 JV5138'THE ENTRANCE TO THE HAVEN HARBOR, 0.6 MILE ENE OF ROCK HALL
 JV5138'LANDING, ON A LONG MARSH POINT, ABOUT 2 FEET ABOVE HIGH WATER,
 JV5138'ABOUT 4 METERS E OF STORM HIGH WATER, ABOUT 20 METERS S OF A SMALL
 JV5138'GROUP OF TREES AND BRUSH, 20 METERS NW OF HIGH-WATER LINE, 8
 JV5138'METERS N OF A FISH TARING TRIPOD, AND 90 METERS NE OF THE EXTREME
 JV5138'SOUTHERLY TIP OF THE MARSH POINT.
 JV5138'
 JV5138'STATION MARK IS THE CENTER OF A STANDARD CEMENT MONUMENT OF THE
 JV5138'MARYLAND SHELL FISH SURVEY, PROJECTING 3 INCHES ABOVE THE SURFACE
 JV5138'OF THE GROUND.
 JV5138'
 JV5138'IT IS POSSIBLE TO REACH THE STATION ON FOOT DURING LOW WATER OVER
 JV5138'THE MARSH (200 METERS) FROM THE N.  BEST REACHED BY BOAT FROM ROCK
 JV5138'HALL LANDING.
 JV5138'
 JV5138'STATION WAS NOT OCCUPIED.
 JV5138
 JV5138                          STATION RECOVERY (1961)
 JV5138
 JV5138'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5138'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  IT HAS EITHER BEEN
 JV5138'DESTROYED BY EROSION OR HAS BEEN BROKEN OFF BELOW THE SURFACE OF
 JV5138'THE GROUND.  THE REFERENCE POINTS ARE INSUFFICIENT FOR RECOVERY OF
 JV5138'THE UNDERGROUND MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6768 ***********************************************************************
 JV6768  DESIGNATION -  HAVERHILL
 JV6768  PID         -  JV6768
 JV6768  STATE/COUNTY-  MD/HARFORD
 JV6768  COUNTRY     -  US
 JV6768  USGS QUAD   -  EDGEWOOD (2016)
 JV6768
 JV6768                         *CURRENT SURVEY CONTROL
 JV6768  ______________________________________________________________________
 JV6768* NAD 83(2011) POSITION- 39 24 01.02084(N) 076 20 12.52734(W)   ADJUSTED
 JV6768* NAD 83(2011) ELLIP HT-   -11.306 (meters)        (06/27/12)   ADJUSTED
 JV6768* NAD 83(2011) EPOCH   -  2010.00
 JV6768* NAVD 88 ORTHO HEIGHT -    21.8   (meters)       72.    (feet) VERTCON3
 JV6768  ______________________________________________________________________
 JV6768  GEOID HEIGHT    -        -33.100 (meters)                     GEOID18
 JV6768  NAD 83(2011) X  -  1,165,770.161 (meters)                     COMP
 JV6768  NAD 83(2011) Y  - -4,795,570.019 (meters)                     COMP
 JV6768  NAD 83(2011) Z  -  4,026,747.621 (meters)                     COMP
 JV6768  LAPLACE CORR    -         -2.92  (seconds)                    DEFLEC18
 JV6768
 JV6768  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6768  Standards:
 JV6768         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6768            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6768  -------------------------------------------------------------------
 JV6768  NETWORK    2.23   5.80           0.81   0.95   2.96      0.43684075
 JV6768  -------------------------------------------------------------------
 JV6768  Click here for local accuracies and other accuracy information.
 JV6768
 JV6768.The horizontal coordinates were established by GPS observations
 JV6768.and adjusted by the National Geodetic Survey in June 2012.
 JV6768
 JV6768.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6768.been affixed to the stable North American tectonic plate. See 
 JV6768.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6768
 JV6768.The horizontal coordinates are valid at the epoch date displayed above
 JV6768.which is a decimal equivalence of Year/Month/Day.
 JV6768
 JV6768.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6768.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6768
 JV6768.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6768.GEOID18 height accuracy estimate available here.
 JV6768
 JV6768.Click photographs - Photos may exist for this station.
 JV6768
 JV6768.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6768
 JV6768.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6768
 JV6768.The ellipsoidal height was determined by GPS observations
 JV6768.and is referenced to NAD 83.
 JV6768
 JV6768. The following values were computed from the NAD 83(2011) position.
 JV6768
 JV6768;                    North         East     Units Scale Factor Converg.
 JV6768;SPC MD       -   192,651.477   457,123.414   MT  0.99999168   +0 24 58.5
 JV6768;SPC MD       -   632,057.39  1,499,745.73   sFT  0.99999168   +0 24 58.5
 JV6768;UTM  18      - 4,362,050.412   384,896.008   MT  0.99976312   -0 50 55.0
 JV6768
 JV6768!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6768!SPC MD       -   1.00000177  x   0.99999168  =   0.99999345
 JV6768!UTM  18      -   1.00000177  x   0.99976312  =   0.99976489
 JV6768
 JV6768:                Primary Azimuth Mark                     Grid Az
 JV6768:SPC MD       -  HAVERHILL AZ MK                          012 58 15.2
 JV6768:UTM  18      -  HAVERHILL AZ MK                          014 14 08.7
 JV6768
 JV6768_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8489662050(NAD 83)
 JV6768
 JV6768|---------------------------------------------------------------------|
 JV6768| PID    Reference Object                     Distance      Geod. Az  |
 JV6768|                                                           dddmmss.s |
 JV6768| JV6769 HAVERHILL AZ MK                     428.181 METERS 0132313.7 |
 JV6768|---------------------------------------------------------------------|
 JV6768
 JV6768                          SUPERSEDED SURVEY CONTROL
 JV6768
 JV6768  NAD 83(2007)-  39 24 01.02098(N)    076 20 12.52813(W) AD(2002.00) 0
 JV6768  ELLIP H (02/10/07)  -11.288  (m)                       GP(2002.00)    
 JV6768  ELLIP H (09/18/02)  -11.272  (m)                       GP(       ) 4 2
 JV6768  NAD 83(1991)-  39 24 01.02019(N)    076 20 12.52830(W) AD(       ) 1
 JV6768  ELLIP H (01/27/92)  -11.323  (m)                       GP(       ) 4 1
 JV6768  NAD 83(1986)-  39 24 01.01460(N)    076 20 12.53571(W) AD(       ) 1
 JV6768  NGVD 29 (06/18/91)   22.0    (m)  UNKNOWN  model used  GPS OBS        
 JV6768
 JV6768.Superseded values are not recommended for survey control.
 JV6768
 JV6768.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6768.See file dsdata.pdf to determine how the superseded data were derived.
 JV6768
 JV6768_MARKER: DD = SURVEY DISK
 JV6768_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6768_STAMPING: 1 HAVERHILL 1989
 JV6768_MARK LOGO: MD-025
 JV6768_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6768_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6768+STABILITY: SURFACE MOTION
 JV6768_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6768+SATELLITE: SATELLITE OBSERVATIONS - September 21, 2013
 JV6768
 JV6768  HISTORY     - Date     Condition        Report By
 JV6768  HISTORY     - 1989     MONUMENTED       RDA
 JV6768  HISTORY     - 20070224 GOOD             INDIV
 JV6768  HISTORY     - 20130921 GOOD             USPSQD
 JV6768
 JV6768                          STATION DESCRIPTION
 JV6768
 JV6768'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6768'THE STATION IS LOCATED IN SOUTHWESTERN HARFORD COUNTY, MARYLAND, ABOUT
 JV6768'0.9 MILE SOUTHWEST  OF THE VILLAGE OF MAGNOLIA ON HAVERHILL ROAD NEAR
 JV6768'RIVERSIDE ELEMENTARY SCHOOL.
 JV6768'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 40 AND
 JV6768'STATE HIGHWAY 152 PROCEED SOUTH ALONG HIGHWAY 152 1.4 MILES TO ITS
 JV6768'INTERSECTION WITH TRIMBLE ROAD.  TURN RIGHT AND PROCEED WEST ALONG
 JV6768'TRIMBLE ROAD 0.7 MILE TO ITS INTERSECTION WITH HAVERHILL ROAD.  TURN
 JV6768'LEFT AND PROCEED SOUTH ALONG HAVERHILL ROAD 0.7 MILE TO RIVERSIDE
 JV6768'ELEMENTARY SCHOOL AND THE STATION ON THE RIGHT UNDER A POWER
 JV6768'TRANSMISSION LINE.
 JV6768'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6768'ABOUT 1 INCH BELOW GROUND STAMPED 1 HAVERHILL 1989.  THE STATION IS
 JV6768'92.0 FEET WEST OF THE WEST CURB OF HAVERHILL ROAD IN THE SOUTH LINE OF
 JV6768'THE POWER POLES, 82.0 FEET EAST OF G AND E POLE NUMBER 537942 AND 90.3
 JV6768'FEET SOUTHWEST OF THE SOUTH END OF A CHAIN LINK FENCE.
 JV6768
 JV6768                          STATION RECOVERY (2007)
 JV6768
 JV6768'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2007 (TRA)
 JV6768'RECOVERED AS DESCRIBED
 JV6768
 JV6768                          STATION RECOVERY (2013)
 JV6768
 JV6768'RECOVERY NOTE BY US POWER SQUADRON 2013
 JV6768'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6769 ***********************************************************************
 JV6769  DESIGNATION -  HAVERHILL AZ MK
 JV6769  PID         -  JV6769
 JV6769  STATE/COUNTY-  MD/HARFORD
 JV6769  COUNTRY     -  US
 JV6769  USGS QUAD   -  EDGEWOOD (2016)
 JV6769
 JV6769                         *CURRENT SURVEY CONTROL
 JV6769  ______________________________________________________________________
 JV6769* NAD 83(2011) POSITION- 39 24 14.52760(N) 076 20 08.38378(W)   ADJUSTED
 JV6769* NAD 83(2011) ELLIP HT-    -8.923 (meters)        (06/27/12)   ADJUSTED
 JV6769* NAD 83(2011) EPOCH   -  2010.00
 JV6769* NAVD 88 ORTHO HEIGHT -    24.2   (meters)       79.    (feet) VERTCON3
 JV6769  ______________________________________________________________________
 JV6769  GEOID HEIGHT    -        -33.097 (meters)                     GEOID18
 JV6769  NAD 83(2011) X  -  1,165,804.470 (meters)                     COMP
 JV6769  NAD 83(2011) Y  - -4,795,291.467 (meters)                     COMP
 JV6769  NAD 83(2011) Z  -  4,027,071.002 (meters)                     COMP
 JV6769  LAPLACE CORR    -         -2.94  (seconds)                    DEFLEC18
 JV6769
 JV6769  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6769  Standards:
 JV6769         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6769            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6769  -------------------------------------------------------------------
 JV6769  NETWORK    2.28   5.94           0.83   0.97   3.03      0.43926918
 JV6769  -------------------------------------------------------------------
 JV6769  Click here for local accuracies and other accuracy information.
 JV6769
 JV6769.The horizontal coordinates were established by GPS observations
 JV6769.and adjusted by the National Geodetic Survey in June 2012.
 JV6769
 JV6769.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6769.been affixed to the stable North American tectonic plate. See 
 JV6769.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6769
 JV6769.The horizontal coordinates are valid at the epoch date displayed above
 JV6769.which is a decimal equivalence of Year/Month/Day.
 JV6769
 JV6769.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6769.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6769
 JV6769.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6769.GEOID18 height accuracy estimate available here.
 JV6769
 JV6769.Click photographs - Photos may exist for this station.
 JV6769
 JV6769.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6769
 JV6769.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6769
 JV6769.The ellipsoidal height was determined by GPS observations
 JV6769.and is referenced to NAD 83.
 JV6769
 JV6769. The following values were computed from the NAD 83(2011) position.
 JV6769
 JV6769;                    North         East     Units Scale Factor Converg.
 JV6769;SPC MD       -   193,068.729   457,219.521   MT  0.99999228   +0 25 01.1
 JV6769;SPC MD       -   633,426.32  1,500,061.05   sFT  0.99999228   +0 25 01.1
 JV6769;UTM  18      - 4,362,465.345   385,001.279   MT  0.99976283   -0 50 52.6
 JV6769
 JV6769!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6769!SPC MD       -   1.00000140  x   0.99999228  =   0.99999368
 JV6769!UTM  18      -   1.00000140  x   0.99976283  =   0.99976423
 JV6769
 JV6769:                Primary Azimuth Mark                     Grid Az
 JV6769:SPC MD       -  HAVERHILL                                192 58 15.3
 JV6769:UTM  18      -  HAVERHILL                                194 14 09.0
 JV6769
 JV6769_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8500162465(NAD 83)
 JV6769
 JV6769|---------------------------------------------------------------------|
 JV6769| PID    Reference Object                     Distance      Geod. Az  |
 JV6769|                                                           dddmmss.s |
 JV6769| JV6768 HAVERHILL                           428.181 METERS 1932316.4 |
 JV6769|---------------------------------------------------------------------|
 JV6769
 JV6769                          SUPERSEDED SURVEY CONTROL
 JV6769
 JV6769  NAD 83(2007)-  39 24 14.52775(N)    076 20 08.38458(W) AD(2002.00) 0
 JV6769  ELLIP H (02/10/07)   -8.904  (m)                       GP(2002.00)    
 JV6769  ELLIP H (09/18/02)   -8.888  (m)                       GP(       ) 4 2
 JV6769  NAD 83(1991)-  39 24 14.52696(N)    076 20 08.38475(W) AD(       ) 1
 JV6769  ELLIP H (01/27/92)   -8.940  (m)                       GP(       ) 4 1
 JV6769  NAD 83(1986)-  39 24 14.52137(N)    076 20 08.39216(W) AD(       ) 1
 JV6769  NGVD 29 (06/18/91)   24.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6769
 JV6769.Superseded values are not recommended for survey control.
 JV6769
 JV6769.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6769.See file dsdata.pdf to determine how the superseded data were derived.
 JV6769
 JV6769_MARKER: DZ = AZIMUTH MARK DISK
 JV6769_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6769_STAMPING: 1 HAVERHILL 1989
 JV6769_MARK LOGO: MD-025
 JV6769_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6769_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6769+STABILITY: SURFACE MOTION
 JV6769_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6769+SATELLITE: SATELLITE OBSERVATIONS - October 12, 2013
 JV6769
 JV6769  HISTORY     - Date     Condition        Report By
 JV6769  HISTORY     - 1989     MONUMENTED       RDA
 JV6769  HISTORY     - 20010505 GOOD             USPSQD
 JV6769  HISTORY     - 20131012 GOOD             USPSQD
 JV6769
 JV6769                          STATION DESCRIPTION
 JV6769
 JV6769'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6769'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTH ALONG
 JV6769'HAVERHILL ROAD 0.3 MILE TO A POWER LINE CROSSING AND THE MARK ON THE
 JV6769'RIGHT.
 JV6769'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6769'ABOUT 1 INCH BELOW GROUND STAMPED 1 HAVERHILL 1989.  THE MARK IS 75.4
 JV6769'FEET NORTHWEST OF THE NORTHWEST LEG OF G AND E TOWER NUMBER
 JV6769'CKT110516B, 112.0 FEET SOUTH OF A 10 INCH MAPLE TREE, 13.0 FEET EAST
 JV6769'OF THE EAST EDGE OF SIDEWALK, AND 1404.79 FEET FROM THE STATION.
 JV6769
 JV6769                          STATION RECOVERY (2001)
 JV6769
 JV6769'RECOVERY NOTE BY US POWER SQUADRON 2001
 JV6769'RECOVERED IN GOOD CONDITION.
 JV6769
 JV6769                          STATION RECOVERY (2013)
 JV6769
 JV6769'RECOVERY NOTE BY US POWER SQUADRON 2013
 JV6769'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7082 ***********************************************************************
 JV7082  DESIGNATION -  HAVR
 JV7082  PID         -  JV7082
 JV7082  STATE/COUNTY-  MD/HARFORD
 JV7082  COUNTRY     -  US
 JV7082  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV7082
 JV7082                         *CURRENT SURVEY CONTROL
 JV7082  ______________________________________________________________________
 JV7082* NAD 83(2011) POSITION- 39 32 29.72077(N) 076 06 36.87845(W)   ADJUSTED
 JV7082* NAD 83(2011) ELLIP HT-   -13.575 (meters)        (06/27/12)   ADJUSTED
 JV7082* NAD 83(2011) EPOCH   -  2010.00
 JV7082* NAVD 88 ORTHO HEIGHT -    19.5   (meters)       64.    (feet) VERTCON3
 JV7082  ______________________________________________________________________
 JV7082  GEOID HEIGHT    -        -33.132 (meters)                     GEOID18
 JV7082  NAD 83(2011) X  -  1,182,330.038 (meters)                     COMP
 JV7082  NAD 83(2011) Y  - -4,781,239.684 (meters)                     COMP
 JV7082  NAD 83(2011) Z  -  4,038,856.747 (meters)                     COMP
 JV7082  LAPLACE CORR    -         -3.80  (seconds)                    DEFLEC18
 JV7082
 JV7082  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7082  Standards:
 JV7082         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7082            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7082  -------------------------------------------------------------------
 JV7082  NETWORK    4.10   4.14           1.90   1.36   2.11      0.00649501
 JV7082  -------------------------------------------------------------------
 JV7082  Click here for local accuracies and other accuracy information.
 JV7082
 JV7082.The horizontal coordinates were established by GPS observations
 JV7082.and adjusted by the National Geodetic Survey in June 2012.
 JV7082
 JV7082.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7082.been affixed to the stable North American tectonic plate. See 
 JV7082.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7082
 JV7082.The horizontal coordinates are valid at the epoch date displayed above
 JV7082.which is a decimal equivalence of Year/Month/Day.
 JV7082
 JV7082.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV7082.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV7082
 JV7082.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7082.GEOID18 height accuracy estimate available here.
 JV7082
 JV7082.Click photographs - Photos may exist for this station.
 JV7082
 JV7082.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7082
 JV7082.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7082
 JV7082.The ellipsoidal height was determined by GPS observations
 JV7082.and is referenced to NAD 83.
 JV7082
 JV7082. The following values were computed from the NAD 83(2011) position.
 JV7082
 JV7082;                    North         East     Units Scale Factor Converg.
 JV7082;SPC MD       -   208,505.161   476,485.437   MT  1.00001731   +0 33 30.4
 JV7082;SPC MD       -   684,070.68  1,563,269.30   sFT  1.00001731   +0 33 30.4
 JV7082;UTM  18      - 4,377,468.608   404,598.085   MT  0.99971206   -0 42 24.8
 JV7082
 JV7082!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7082!SPC MD       -   1.00000213  x   1.00001731  =   1.00001944
 JV7082!UTM  18      -   1.00000213  x   0.99971206  =   0.99971419
 JV7082
 JV7082_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0459877468(NAD 83)
 JV7082
 JV7082                          SUPERSEDED SURVEY CONTROL
 JV7082
 JV7082  NAD 83(2007)-  39 32 29.72113(N)    076 06 36.87931(W) AD(2002.00) 0
 JV7082  ELLIP H (02/10/07)  -13.548  (m)                       GP(2002.00)    
 JV7082  ELLIP H (08/30/02)  -13.545  (m)                       GP(       ) 4 2
 JV7082  NAD 83(1991)-  39 32 29.72101(N)    076 06 36.87975(W) AD(       ) 1
 JV7082  ELLIP H (12/03/93)  -13.551  (m)                       GP(       ) 4 1
 JV7082  NGVD 29 (12/03/93)   19.8    (m)  GEOID93  model used  GPS OBS        
 JV7082
 JV7082.Superseded values are not recommended for survey control.
 JV7082
 JV7082.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7082.See file dsdata.pdf to determine how the superseded data were derived.
 JV7082
 JV7082_MARKER: A = ALUMINUM MARKER
 JV7082_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7082_STAMPING: HAVR 1993
 JV7082_MARK LOGO: NOS
 JV7082_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7082_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7082+STABILITY: SURFACE MOTION
 JV7082_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7082+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7082
 JV7082  HISTORY     - Date     Condition        Report By
 JV7082  HISTORY     - 1993     MONUMENTED       NOS
 JV7082  HISTORY     - 20020309 GOOD             USPSQD
 JV7082
 JV7082                          STATION DESCRIPTION
 JV7082
 JV7082'DESCRIBED BY NATIONAL OCEAN SERVICE 1993
 JV7082'THE STATION IS LOCATED APPROXIMATELY 1 MI (1.6 KM) SW OF HAVRE DE
 JV7082'GRACE IN THE GRASS MEDIAN OF U.S. HWY 40.
 JV7082'TO REACH THE STATION FROM THE JUNCTION OF STATE ROUTE 155 AND U.S. 40
 JV7082'IN HAVRE DE GRACE, PROCEED SW ALONG U.S. 40 FOR 0.9 MI (1.4 KM) TO
 JV7082'THE STATION ON THE LEFT.
 JV7082'THE STATION IS A STANDARD NOS ALUMINUM DISK STAMPED ---HAVR 1993---
 JV7082'CONNECTED TO THE TOP OF A 42 IN ALUMINUM ROD DRIVEN INTO THE GROUND
 JV7082'AND SURROUNDED BY CONCRETE.  THE MARK IS FLUSH WITH THE GROUND AND IS
 JV7082'LOCATED 17.07 M (56.00 FT) NNE FROM THE CENTER OF A STEEL GRATE OF A
 JV7082'DRAIN IN THE MEDIAN, 7.52 M (24.67 FT) NNW FROM THE NW EDGE OF U.S.
 JV7082'40 NORTHBOUND, AND 2.10 M (6.89 FT) SSE FROM THE SE EDGE OF U.S. 40
 JV7082'SOUTHBOUND.
 JV7082
 JV7082                          STATION RECOVERY (2002)
 JV7082
 JV7082'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV7082'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4793 ***********************************************************************
 JV4793  DESIGNATION -  HAVRE DE GRACE LIGHTHOUSE
 JV4793  PID         -  JV4793
 JV4793  STATE/COUNTY-  MD/HARFORD
 JV4793  COUNTRY     -  US
 JV4793  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV4793
 JV4793                         *CURRENT SURVEY CONTROL
 JV4793  ______________________________________________________________________
 JV4793* NAD 83(1991) POSITION- 39 32 26.54329(N) 076 05 05.15976(W)   ADJUSTED
 JV4793  ______________________________________________________________________
 JV4793  GEOID HEIGHT    -        -33.177 (meters)                     GEOID18
 JV4793  LAPLACE CORR    -         -2.77  (seconds)                    DEFLEC18
 JV4793  HORZ ORDER      -  THIRD
 JV4793
 JV4793.The horizontal coordinates were established by classical geodetic methods
 JV4793.and adjusted by the National Geodetic Survey in January 1992.
 JV4793
 JV4793.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4793.GEOID18 height accuracy estimate available here.
 JV4793
 JV4793.Click photographs - Photos may exist for this station.
 JV4793
 JV4793.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4793
 JV4793. The following values were computed from the NAD 83(1991) position.
 JV4793
 JV4793;                    North         East     Units Scale Factor Converg.
 JV4793;SPC MD       -   208,428.820   478,676.443   MT  1.00001713   +0 34 28.0
 JV4793;SPC MD       -   683,820.22  1,570,457.63   sFT  1.00001713   +0 34 28.0
 JV4793;UTM  18      - 4,377,343.947   406,786.198   MT  0.99970697   -0 41 26.3
 JV4793
 JV4793_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0678677343(NAD 83)
 JV4793
 JV4793                          SUPERSEDED SURVEY CONTROL
 JV4793
 JV4793  NAD 83(1986)-  39 32 26.53671(N)    076 05 05.16585(W) AD(       ) 3
 JV4793  NAD 27      -  39 32 26.13300(N)    076 05 06.35000(W) AD(       ) 3
 JV4793  USBS        -  39 32 23.28000(N)    076 04 47.12000(W) AD(       ) 3
 JV4793  USSD        -  39 32 26.50800(N)    076 05 06.19900(W) AD(       ) 3
 JV4793
 JV4793.Superseded values are not recommended for survey control.
 JV4793
 JV4793.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4793.See file dsdata.pdf to determine how the superseded data were derived.
 JV4793
 JV4793_MARKER: 13 = LIGHTHOUSE
 JV4793
 JV4793  HISTORY     - Date     Condition        Report By
 JV4793  HISTORY     - 1897     FIRST OBSERVED   CGS
 JV4793  HISTORY     - 1983     GOOD             USPSQD
 JV4793  HISTORY     - 20020703 GOOD             GEOCAC
 JV4793
 JV4793                          STATION DESCRIPTION
 JV4793
 JV4793'DESCRIBED BY US POWER SQUADRON 1983 (CAS)
 JV4793'STATION RECOVERED GOOD.
 JV4793'
 JV4793'THIS STATION SHOULD BE DESCRIBED AS ABANDONED LIGHT HOUSE NOW
 JV4793'MAINTAINED BY HARFORD COUNTY HISTORICAL SOCIETY AS A MUSEUM.
 JV4793'GEODETIC LOCATION IS ADEQUATE AS DESCRIBED.  TO REACH STATION GO
 JV4793'SOUTH ON UNION AVE FROM HAVRE DE GRACE POST OFFICE TO INTERSECTION
 JV4793'OF LAFAYETTE ST. TURN LEFT ON LAFAYETTE ST TO END.  LIGHTHOUSE AT
 JV4793'STREET END.
 JV4793
 JV4793                          STATION RECOVERY (2002)
 JV4793
 JV4793'RECOVERY NOTE BY GEOCACHING 2002 (APC)
 JV4793'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4782 ***********************************************************************
 JV4782  DESIGNATION -  HAVRE DE GRACE RADIO WASA MAST
 JV4782  PID         -  JV4782
 JV4782  STATE/COUNTY-  MD/HARFORD
 JV4782  COUNTRY     -  US
 JV4782  USGS QUAD   -  HAVRE DE GRACE (2016)
 JV4782
 JV4782                         *CURRENT SURVEY CONTROL
 JV4782  ______________________________________________________________________
 JV4782* NAD 83(1991) POSITION- 39 33 55.14887(N) 076 07 06.58565(W)   ADJUSTED
 JV4782  ______________________________________________________________________
 JV4782  GEOID HEIGHT    -        -33.064 (meters)                     GEOID18
 JV4782  LAPLACE CORR    -         -4.17  (seconds)                    DEFLEC18
 JV4782  HORZ ORDER      -  THIRD
 JV4782
 JV4782.The horizontal coordinates were established by classical geodetic methods
 JV4782.and adjusted by the National Geodetic Survey in January 1992.
 JV4782
 JV4782.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4782.GEOID18 height accuracy estimate available here.
 JV4782
 JV4782.Click photographs - Photos may exist for this station.
 JV4782
 JV4782.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4782
 JV4782. The following values were computed from the NAD 83(1991) position.
 JV4782
 JV4782;                    North         East     Units Scale Factor Converg.
 JV4782;SPC MD       -   211,132.859   475,750.658   MT  1.00002221   +0 33 11.7
 JV4782;SPC MD       -   692,691.72  1,560,858.62   sFT  1.00002221   +0 33 11.7
 JV4782;UTM  18      - 4,380,111.083   403,921.728   MT  0.99971365   -0 42 45.0
 JV4782
 JV4782_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0392180111(NAD 83)
 JV4782
 JV4782                          SUPERSEDED SURVEY CONTROL
 JV4782
 JV4782  NAD 83(1986)-  39 33 55.14247(N)    076 07 06.59071(W) AD(       ) 3
 JV4782  NAD 27      -  39 33 54.75100(N)    076 07 07.77200(W) AD(       ) 3
 JV4782
 JV4782.Superseded values are not recommended for survey control.
 JV4782
 JV4782.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4782.See file dsdata.pdf to determine how the superseded data were derived.
 JV4782
 JV4782_MARKER: 42 = RADIO/TV MAST
 JV4782_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4782+SATELLITE: SATELLITE OBSERVATIONS - March 09, 2002
 JV4782
 JV4782  HISTORY     - Date     Condition        Report By
 JV4782  HISTORY     - 1958     FIRST OBSERVED   CGS
 JV4782  HISTORY     - 1962     GOOD             CGS
 JV4782  HISTORY     - 20020309 GOOD             USPSQD
 JV4782
 JV4782                          STATION DESCRIPTION
 JV4782
 JV4782'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4782'STATION IS LOCATED ABOUT 0.25 MILE NORTH OF STATE HIGHWAY NO. 155,
 JV4782'ABOUT 2.0 MILES NORTHWEST OF HAVRE DE GRACE AND ABOUT 0.2 MILES
 JV4782'NORTH OF WASA BROADCASTING BUILDING.  STATION IS OF STEEL
 JV4782'CONSTRUCTION ABOUT 250 FEET HIGH AND SET ON A 4 FOOT CONCRETE
 JV4782'BASE.  STATION IS PAINTED RED AND WHITE AND IS GUYED.  THE POINT
 JV4782'INTERSECTED WAS THE LIGHT ATOP OF MAST.
 JV4782'
 JV4782'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY NO. 40 AND STATE
 JV4782'HIGHWAY NO. 155 IN HAVRE DE GRACE, GO NORTHWESTERLY ON STATE
 JV4782'HIGHWAY NO. 155 FOR 1.2 MILE TO WASA BROADCASTING BUILDING ON
 JV4782'RIGHT AND STATION AS DESCRIBED.
 JV4782
 JV4782                          STATION RECOVERY (1962)
 JV4782
 JV4782'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RWT)
 JV4782'THE STATION WAS RECOVERED AS DESCRIBED AND FOUND IN GOOD CONDITION.
 JV4782
 JV4782                          STATION RECOVERY (2002)
 JV4782
 JV4782'RECOVERY NOTE BY US POWER SQUADRON 2002
 JV4782'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ4484 ***********************************************************************
 DQ4484  HT_MOD      -  This is a Height Modernization Survey Station.
 DQ4484  DESIGNATION -  HAW 1
 DQ4484  PID         -  DQ4484
 DQ4484  STATE/COUNTY-  MD/C OF BALTIMORE
 DQ4484  COUNTRY     -  US
 DQ4484  USGS QUAD   -  CURTIS BAY (2016)
 DQ4484
 DQ4484                         *CURRENT SURVEY CONTROL
 DQ4484  ______________________________________________________________________
 DQ4484* NAD 83(2011) POSITION- 39 12 36.43473(N) 076 32 40.99090(W)   ADJUSTED
 DQ4484* NAD 83(2011) ELLIP HT-   -29.467 (meters)        (02/07/17)   ADJUSTED
 DQ4484* NAD 83(2011) EPOCH   -  2010.00
 DQ4484* NAVD 88 ORTHO HEIGHT -     3.50  (meters)       11.5   (feet) GPS OBS
 DQ4484  ______________________________________________________________________
 DQ4484  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DQ4484  GEOID HEIGHT    -        -32.975 (meters)                     GEOID12B
 DQ4484  GEOID HEIGHT    -        -32.972 (meters)                     GEOID18
 DQ4484  NAD 83(2011) X  -  1,151,469.610 (meters)                     COMP
 DQ4484  NAD 83(2011) Y  - -4,812,761.321 (meters)                     COMP
 DQ4484  NAD 83(2011) Z  -  4,010,399.980 (meters)                     COMP
 DQ4484  LAPLACE CORR    -         -3.01  (seconds)                    DEFLEC18
 DQ4484
 DQ4484  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ4484  Standards:
 DQ4484         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ4484            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ4484  -------------------------------------------------------------------
 DQ4484  NETWORK    0.58   1.16           0.27   0.19   0.59      0.00654088
 DQ4484  -------------------------------------------------------------------
 DQ4484  Click here for local accuracies and other accuracy information.
 DQ4484
 DQ4484.The horizontal coordinates were established by GPS observations
 DQ4484.and adjusted by the JMT ENGINEERING in February 2017.
 DQ4484
 DQ4484.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ4484.been affixed to the stable North American tectonic plate. See 
 DQ4484.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DQ4484
 DQ4484.The horizontal coordinates are valid at the epoch date displayed above
 DQ4484.which is a decimal equivalence of Year/Month/Day.
 DQ4484
 DQ4484.The orthometric height was determined by GPS observations and a
 DQ4484.high-resolution geoid model using precise GPS observation and
 DQ4484.processing techniques.
 DQ4484
 DQ4484.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ4484.GEOID18 height accuracy estimate available here.
 DQ4484
 DQ4484.Click photographs - Photos may exist for this station.
 DQ4484
 DQ4484.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DQ4484
 DQ4484.The Laplace correction was computed from DEFLEC18 derived deflections.
 DQ4484
 DQ4484.The ellipsoidal height was determined by GPS observations
 DQ4484.and is referenced to NAD 83.
 DQ4484
 DQ4484. The following values were computed from the NAD 83(2011) position.
 DQ4484
 DQ4484;                    North         East     Units Scale Factor Converg.
 DQ4484;SPC MD       -   171,430.368   439,320.913   MT  0.99996683   +0 17 08.7
 DQ4484;SPC MD       -   562,434.47  1,441,338.70   sFT  0.99996683   +0 17 08.7
 DQ4484;UTM  18      - 4,341,231.000   366,633.254   MT  0.99981901   -0 58 36.0
 DQ4484
 DQ4484!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ4484!SPC MD       -   1.00000462  x   0.99996683  =   0.99997145
 DQ4484!UTM  18      -   1.00000462  x   0.99981901  =   0.99982363
 DQ4484
 DQ4484_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6663341231(NAD 83)
 DQ4484
 DQ4484                          SUPERSEDED SURVEY CONTROL
 DQ4484
 DQ4484.No superseded survey control is available for this station.
 DQ4484
 DQ4484_MARKER: DD = SURVEY DISK
 DQ4484_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DQ4484_STAMPING: HAW-1 OCTOBER 2016
 DQ4484_MARK LOGO: MDPORT
 DQ4484_PROJECTION: FLUSH
 DQ4484_MAGNETIC: N = NO MAGNETIC MATERIAL
 DQ4484_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DQ4484+STABILITY: SURFACE MOTION
 DQ4484_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DQ4484+SATELLITE: SATELLITE OBSERVATIONS - November 12, 2018
 DQ4484
 DQ4484  HISTORY     - Date     Condition        Report By
 DQ4484  HISTORY     - 20161010 MONUMENTED       JMTMD
 DQ4484  HISTORY     - 20181112 GOOD             DEWDAV
 DQ4484
 DQ4484                          STATION DESCRIPTION
 DQ4484
 DQ4484'DESCRIBED BY JMT ENGINEERING 2016 (EAS)
 DQ4484'THE MARK IS LOCATED ABOUT 7.0 MI (11.3 KM) SOUTHEAST OF BALTIMORE, 4.0
 DQ4484'MI (6.4 KM) SOUTHWEST OF SPARROWS POINT AND 3.0 MI (4.8 KM) NORTHWEST
 DQ4484'OF RIVIERA BEACH IN CURTIS BAY AND ON THE GROUNDS OF THE HAWKINS POINT
 DQ4484'FACILITY OF THE MARYLAND PORT ADMINISTRATION.
 DQ4484'
 DQ4484'TO REACH TAKE I-695 SOUTH TO EXIT 1 (HAWKINS PONINT ROAD).  AT END OF
 DQ4484'RAMP TURN LEFT (SOUTH) ON TO QUARANTINE ROAD FOR 0.377 MI (0.6 KM) TO
 DQ4484'FORT ARMISTEAD ROAD (USE RIGHT LANE RAMP) ONTO FORT ARMISTEAD ROAD AND
 DQ4484'CONTINUE FOR 0.93 MI (1.50 KM) TO DOCK ROAD.  TURN LEFT AND CONTINUE
 DQ4484'FOR 0.18 MI (0.29 KM) TO HAWKINS POINT ROAD.  TURN LEFT AND CONTINUE
 DQ4484'FOR 0.13 MI (0.21 KM) TO A DRIVEWAY ENTRANCE ON THE LEFT.  TURN LEFT
 DQ4484'INTO DRIVEWAY FOR 75 FT (22.9 M) TO THE STATION ON THE LEFT.
 DQ4484'
 DQ4484'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DQ4484'CONCRETE.  IT IS 24.6 FT (7.5 M) NORTH OF A FLAG POLE, 10.7 FT (3.3 M)
 DQ4484'SOUTHEAST OF A POWER POLE AND 3.9 FT (1.2 M) WEST OF THE EDGE OF ROAD.
 DQ4484
 DQ4484                          STATION RECOVERY (2018)
 DQ4484
 DQ4484'RECOVERY NOTE BY DEWBERRY DAVIS 2018 (GDS)
 DQ4484'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DQ4485 ***********************************************************************
 DQ4485  HT_MOD      -  This is a Height Modernization Survey Station.
 DQ4485  DESIGNATION -  HAW 2
 DQ4485  PID         -  DQ4485
 DQ4485  STATE/COUNTY-  MD/C OF BALTIMORE
 DQ4485  COUNTRY     -  US
 DQ4485  USGS QUAD   -  CURTIS BAY (2016)
 DQ4485
 DQ4485                         *CURRENT SURVEY CONTROL
 DQ4485  ______________________________________________________________________
 DQ4485* NAD 83(2011) POSITION- 39 12 32.52040(N) 076 32 47.05025(W)   ADJUSTED
 DQ4485* NAD 83(2011) ELLIP HT-   -28.405 (meters)        (02/07/17)   ADJUSTED
 DQ4485* NAD 83(2011) EPOCH   -  2010.00
 DQ4485* NAVD 88 ORTHO HEIGHT -     4.56  (meters)       15.0   (feet) GPS OBS
 DQ4485  ______________________________________________________________________
 DQ4485  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DQ4485  GEOID HEIGHT    -        -32.974 (meters)                     GEOID12B
 DQ4485  GEOID HEIGHT    -        -32.970 (meters)                     GEOID18
 DQ4485  NAD 83(2011) X  -  1,151,346.173 (meters)                     COMP
 DQ4485  NAD 83(2011) Y  - -4,812,870.161 (meters)                     COMP
 DQ4485  NAD 83(2011) Z  -  4,010,307.119 (meters)                     COMP
 DQ4485  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 DQ4485
 DQ4485  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DQ4485  Standards:
 DQ4485         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DQ4485            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DQ4485  -------------------------------------------------------------------
 DQ4485  NETWORK    0.48   0.90           0.22   0.16   0.46      0.04308031
 DQ4485  -------------------------------------------------------------------
 DQ4485  Click here for local accuracies and other accuracy information.
 DQ4485
 DQ4485.The horizontal coordinates were established by GPS observations
 DQ4485.and adjusted by the JMT ENGINEERING in February 2017.
 DQ4485
 DQ4485.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DQ4485.been affixed to the stable North American tectonic plate. See 
 DQ4485.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DQ4485
 DQ4485.The horizontal coordinates are valid at the epoch date displayed above
 DQ4485.which is a decimal equivalence of Year/Month/Day.
 DQ4485
 DQ4485.The orthometric height was determined by GPS observations and a
 DQ4485.high-resolution geoid model using precise GPS observation and
 DQ4485.processing techniques.
 DQ4485
 DQ4485.Significant digits in the geoid height do not necessarily reflect accuracy.
 DQ4485.GEOID18 height accuracy estimate available here.
 DQ4485
 DQ4485.Click photographs - Photos may exist for this station.
 DQ4485
 DQ4485.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DQ4485
 DQ4485.The Laplace correction was computed from DEFLEC18 derived deflections.
 DQ4485
 DQ4485.The ellipsoidal height was determined by GPS observations
 DQ4485.and is referenced to NAD 83.
 DQ4485
 DQ4485. The following values were computed from the NAD 83(2011) position.
 DQ4485
 DQ4485;                    North         East     Units Scale Factor Converg.
 DQ4485;SPC MD       -   171,308.937   439,176.147   MT  0.99996672   +0 17 04.9
 DQ4485;SPC MD       -   562,036.07  1,440,863.74   sFT  0.99996672   +0 17 04.9
 DQ4485;UTM  18      - 4,341,112.805   366,485.869   MT  0.99981949   -0 58 39.7
 DQ4485
 DQ4485!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DQ4485!SPC MD       -   1.00000446  x   0.99996672  =   0.99997118
 DQ4485!UTM  18      -   1.00000446  x   0.99981949  =   0.99982395
 DQ4485
 DQ4485_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6648541112(NAD 83)
 DQ4485
 DQ4485                          SUPERSEDED SURVEY CONTROL
 DQ4485
 DQ4485.No superseded survey control is available for this station.
 DQ4485
 DQ4485_MARKER: DD = SURVEY DISK
 DQ4485_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DQ4485_STAMPING: HAW-2 OCTOBER 2016
 DQ4485_MARK LOGO: MDPORT
 DQ4485_PROJECTION: FLUSH
 DQ4485_MAGNETIC: N = NO MAGNETIC MATERIAL
 DQ4485_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DQ4485+STABILITY: SURFACE MOTION
 DQ4485_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DQ4485+SATELLITE: SATELLITE OBSERVATIONS - October 10, 2016
 DQ4485
 DQ4485  HISTORY     - Date     Condition        Report By
 DQ4485  HISTORY     - 20161010 MONUMENTED       JMTMD
 DQ4485
 DQ4485                          STATION DESCRIPTION
 DQ4485
 DQ4485'DESCRIBED BY JMT ENGINEERING 2016 (EAS)
 DQ4485'THE MARK IS LOCATED ABOUT 7.0 MI (11.3 KM) SOUTHEAST OF BALTIMORE, 4.0
 DQ4485'MI (6.4 KM) SOUTHWEST OF SPARROWS POINT AND 3.0 MI (4.8 KM) NORTHWEST
 DQ4485'OF RIVIERA BEACH IN CURTIS BAY AND ON THE GROUNDS OF THE HAWKINS POINT
 DQ4485'FACILITY OF THE MARYLAND PORT ADMINISTRATION.
 DQ4485'
 DQ4485'TO REACH TAKE I-695 SOUTH TO EXIT 1 (HAWKINS PONINT ROAD).  AT END OF
 DQ4485'RAMP TURN LEFT (SOUTH) ON TO QUARANTINE ROAD FOR 0.377 MI (0.6 KM) TO
 DQ4485'FORT ARMISTEAD ROAD (USE RIGHT LANE RAMP) ONTO FORT ARMISTEAD ROAD AND
 DQ4485'CONTINUE FOR 0.93 MI (1.50 KM) TO DOCK ROAD.  TURN LEFT AND CONTINUE
 DQ4485'FOR 0.17 MI (0.27 KM) TO THE STATION ON THE LEFT.
 DQ4485'
 DQ4485'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DQ4485'CONCRETE.  IT IS 100.3 FT (30.6 M) SOUTHWEST OF A 18 INCH (46 CM)
 DQ4485'LOCUST TREE, 74.9 FT (22.8 M) EAST OF A POWER POLE BGE NUMBER 471674
 DQ4485'AND 26.6 FT (8.1 M) SOUTHEAST OF A RAILROAD X-ING SIGN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6138 ***********************************************************************
 HV6138  DESIGNATION -  HAWK
 HV6138  PID         -  HV6138
 HV6138  STATE/COUNTY-  MD/DORCHESTER
 HV6138  COUNTRY     -  US
 HV6138  USGS QUAD   -  HUDSON (2016)
 HV6138
 HV6138                         *CURRENT SURVEY CONTROL
 HV6138  ______________________________________________________________________
 HV6138* NAD 83(1991) POSITION- 38 31 48.79603(N) 076 20 04.27695(W)   ADJUSTED
 HV6138* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6138  ______________________________________________________________________
 HV6138  GEOID HEIGHT    -        -34.474 (meters)                     GEOID18
 HV6138  LAPLACE CORR    -         -4.20  (seconds)                    DEFLEC18
 HV6138  HORZ ORDER      -  THIRD
 HV6138
 HV6138.The horizontal coordinates were established by classical geodetic methods
 HV6138.and adjusted by the National Geodetic Survey in January 1992.
 HV6138
 HV6138.The orthometric height was scaled from a topographic map.
 HV6138
 HV6138.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6138.GEOID18 height accuracy estimate available here.
 HV6138
 HV6138.Click photographs - Photos may exist for this station.
 HV6138
 HV6138.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6138
 HV6138. The following values were computed from the NAD 83(1991) position.
 HV6138
 HV6138;                    North         East     Units Scale Factor Converg.
 HV6138;SPC MD       -    96,069.453   458,024.902   MT  0.99996793   +0 25 03.6
 HV6138;SPC MD       -   315,187.86  1,502,703.37   sFT  0.99996793   +0 25 03.6
 HV6138;UTM  18      - 4,265,490.761   383,678.832   MT  0.99976663   -0 49 53.1
 HV6138
 HV6138!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6138!SPC MD       -   1.00000545  x   0.99996793  =   0.99997338
 HV6138!UTM  18      -   1.00000545  x   0.99976663  =   0.99977207
 HV6138
 HV6138:                Primary Azimuth Mark                     Grid Az
 HV6138:SPC MD       -  HILL POINT 2                             024 06 30.9
 HV6138:UTM  18      -  HILL POINT 2                             025 21 27.6
 HV6138
 HV6138_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8367865490(NAD 83)
 HV6138
 HV6138|---------------------------------------------------------------------|
 HV6138| PID    Reference Object                     Distance      Geod. Az  |
 HV6138|                                                           dddmmss.s |
 HV6138| HV6130 HILL POINT 2                        APPROX. 4.4 KM 0243134.5 |
 HV6138|---------------------------------------------------------------------|
 HV6138
 HV6138                          SUPERSEDED SURVEY CONTROL
 HV6138
 HV6138  NAD 83(1986)-  38 31 48.79421(N)    076 20 04.29224(W) AD(       ) 3
 HV6138  NAD 27      -  38 31 48.36600(N)    076 20 05.45100(W) AD(       ) 3
 HV6138  USSD        -  38 31 48.74300(N)    076 20 05.24700(W) AD(       ) 3
 HV6138
 HV6138.Superseded values are not recommended for survey control.
 HV6138
 HV6138.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6138.See file dsdata.pdf to determine how the superseded data were derived.
 HV6138
 HV6138
 HV6138  HISTORY     - Date     Condition        Report By
 HV6138  HISTORY     - 1901     MONUMENTED       CGS
 HV6138  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6138
 HV6138                          STATION DESCRIPTION
 HV6138
 HV6138'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV6138'THE STATION PLOTS IN THE WATER AND IS CONSIDERED LOST BY
 HV6138'PHOTOGRAMMETRY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5393 ***********************************************************************
 JV5393  DESIGNATION -  HAWK
 JV5393  PID         -  JV5393
 JV5393  STATE/COUNTY-  MD/BALTIMORE
 JV5393  COUNTRY     -  US
 JV5393  USGS QUAD   -  MIDDLE RIVER (2016)
 JV5393
 JV5393                         *CURRENT SURVEY CONTROL
 JV5393  ______________________________________________________________________
 JV5393* NAD 83(1991) POSITION- 39 15 46.39929(N) 076 23 56.40381(W)   ADJUSTED
 JV5393* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5393  ______________________________________________________________________
 JV5393  GEOID HEIGHT    -        -33.050 (meters)                     GEOID18
 JV5393  LAPLACE CORR    -         -1.88  (seconds)                    DEFLEC18
 JV5393  HORZ ORDER      -  THIRD
 JV5393
 JV5393.The horizontal coordinates were established by classical geodetic methods
 JV5393.and adjusted by the National Geodetic Survey in January 1992.
 JV5393
 JV5393.The orthometric height was scaled from a topographic map.
 JV5393
 JV5393.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5393.GEOID18 height accuracy estimate available here.
 JV5393
 JV5393.Click photographs - Photos may exist for this station.
 JV5393
 JV5393.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5393
 JV5393. The following values were computed from the NAD 83(1991) position.
 JV5393
 JV5393;                    North         East     Units Scale Factor Converg.
 JV5393;SPC MD       -   177,361.169   451,867.379   MT  0.99997262   +0 22 37.9
 JV5393;SPC MD       -   581,892.44  1,482,501.56   sFT  0.99997262   +0 22 37.9
 JV5393;UTM  18      - 4,346,882.942   379,305.190   MT  0.99977936   -0 53 07.8
 JV5393
 JV5393!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5393!SPC MD       -   1.00000523  x   0.99997262  =   0.99997785
 JV5393!UTM  18      -   1.00000523  x   0.99977936  =   0.99978459
 JV5393
 JV5393:                Primary Azimuth Mark                     Grid Az
 JV5393:SPC MD       -  MILLER                                   096 25 26.7
 JV5393:UTM  18      -  MILLER                                   097 41 12.4
 JV5393
 JV5393_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7930546882(NAD 83)
 JV5393
 JV5393|---------------------------------------------------------------------|
 JV5393| PID    Reference Object                     Distance      Geod. Az  |
 JV5393|                                                           dddmmss.s |
 JV5393| JV5330 MILLER                              APPROX. 3.6 KM 0964804.6 |
 JV5393| JV5252 CRAIGHILL CHAN REAR RNG LT          APPROX. 3.8 KM 1735919.1 |
 JV5393| CA9508 HAWK RM 1                            17.029 METERS 27941     |
 JV5393|---------------------------------------------------------------------|
 JV5393
 JV5393                          SUPERSEDED SURVEY CONTROL
 JV5393
 JV5393  NAD 83(1986)-  39 15 46.39428(N)    076 23 56.41222(W) AD(       ) 3
 JV5393  NAD 27      -  39 15 46.01400(N)    076 23 57.57500(W) AD(       ) 3
 JV5393
 JV5393.Superseded values are not recommended for survey control.
 JV5393
 JV5393.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5393.See file dsdata.pdf to determine how the superseded data were derived.
 JV5393
 JV5393_MARKER: DS = TRIANGULATION STATION DISK
 JV5393_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5393_STAMPING: HAWK 1934
 JV5393_MARK LOGO: CGS
 JV5393_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5393+STABILITY: SURFACE MOTION
 JV5393
 JV5393  HISTORY     - Date     Condition        Report By
 JV5393  HISTORY     - 1934     MONUMENTED       CGS
 JV5393  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5393
 JV5393                          STATION DESCRIPTION
 JV5393
 JV5393'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5393'AT MOUTH OF BACK RIVER, ON W SHORE HAWK COVE, BETWEEN BALLISTON
 JV5393'POINT AND ROCKY POINT.  STATION IS 20 FEET NW OF HIGH-WATER LINE
 JV5393'ON BLUFF JUST NE OF LARGE MARSH THAT LIES ABOUT MIDWAY BETWEEN
 JV5393'BALLISTON AND ROCKY POINTS.
 JV5393'
 JV5393'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5393'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5393'
 JV5393'REFERENCE MARK IS W OF STATION.
 JV5393
 JV5393                          STATION RECOVERY (1961)
 JV5393
 JV5393'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5393'STATION COULD NOT BE FOUND.  R.M. 1 WAS FOUND STAMPED HAWK NO 1
 JV5393'1934.  A DISTANCE WAS TAPED TO THE STATION FROM R.M. 1 AND FOUND
 JV5393'TO BE OVER A SMALL BLUFF.  THE ORIGINAL DESCRIPTION IS COMPLETE
 JV5393'WITH THE FOLLOWING ADDITIONS.  THE R.M. IS 42 FT. NORTH OF THE
 JV5393'EDGE OF A SMALL BLUFF AND 52.6 FT. NORTHWEST OF A 36 INCH OAK
 JV5393'TREE.  THE R.M. IS ON THE PROPERTY OF JOHNNYS ISLAND VIEW PARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1013 ***********************************************************************
 HV1013  DESIGNATION -  HAWK AZ MK MDSRC
 HV1013  PID         -  HV1013
 HV1013  STATE/COUNTY-  MD/CHARLES
 HV1013  COUNTRY     -  US
 HV1013  USGS QUAD   -  LA PLATA (2016)
 HV1013
 HV1013                         *CURRENT SURVEY CONTROL
 HV1013  ______________________________________________________________________
 HV1013* NAD 83(1986) POSITION- 38 32 46.     (N) 076 54 22.     (W)   SCALED
 HV1013* NAVD 88 ORTHO HEIGHT -    56.783 (meters)      186.30  (feet) ADJUSTED
 HV1013  ______________________________________________________________________
 HV1013  GEOID HEIGHT    -        -33.169 (meters)                     GEOID18
 HV1013  DYNAMIC HEIGHT  -         56.749 (meters)      186.18  (feet) COMP
 HV1013  MODELED GRAVITY -    980,024.7   (mgal)                       NAVD 88
 HV1013
 HV1013  VERT ORDER      -  SECOND    CLASS 0
 HV1013
 HV1013.The horizontal coordinates were scaled from a map and have
 HV1013.an estimated accuracy of +/- 6 seconds.
 HV1013
 HV1013.The orthometric height was determined by differential leveling and
 HV1013.adjusted by the NATIONAL GEODETIC SURVEY
 HV1013.in June 1991.
 HV1013
 HV1013.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1013.GEOID18 height accuracy estimate available here.
 HV1013
 HV1013.Click photographs - Photos may exist for this station.
 HV1013
 HV1013.The dynamic height is computed by dividing the NAVD 88
 HV1013.geopotential number by the normal gravity value computed on the
 HV1013.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1013.degrees latitude (g = 980.6199 gals.).
 HV1013
 HV1013.The modeled gravity was interpolated from observed gravity values.
 HV1013
 HV1013;                    North         East    Units  Estimated Accuracy
 HV1013;SPC MD       -    97,630.      408,190.      MT  (+/- 180 meters Scaled)
 HV1013
 HV1013_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH338681(NAD 83)
 HV1013
 HV1013                          SUPERSEDED SURVEY CONTROL
 HV1013
 HV1013  NGVD 29 (11/26/84)   57.014  (m)          187.05   (f) ADJUSTED    2 0
 HV1013
 HV1013.Superseded values are not recommended for survey control.
 HV1013
 HV1013.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1013.See file dsdata.pdf to determine how the superseded data were derived.
 HV1013
 HV1013_MARKER: DZ = AZIMUTH MARK DISK
 HV1013_SETTING: 30 = SET IN A LIGHT STRUCTURE
 HV1013_SP_SET: CONC HEADWALL
 HV1013_STAMPING: HAWK AZ 1962
 HV1013_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV1013
 HV1013  HISTORY     - Date     Condition        Report By
 HV1013  HISTORY     - 1962     MONUMENTED       MDSRC
 HV1013  HISTORY     - 1967     GOOD             MDSRC
 HV1013
 HV1013                          STATION DESCRIPTION
 HV1013
 HV1013'DESCRIBED BY MD STATE ROADS COMM 1967
 HV1013'4.1 MI E FROM LA PLATA.
 HV1013'FROM THE LA PLATA POST OFFICE, GO EAST ON MARYLAND ROUTE 6
 HV1013'FOR 1.0 MILE TO JUNCTION OF MARYLAND ROUTE 488 LEFT, THENCE
 HV1013'NORTHEAST ON MARYLAND ROUTE 488 FOR 3.1 MILES TO JUNCTION OF
 HV1013'PINEY CHURCH ROAD AND MARK 13.0 FEET SOUTH OF THE CENTERLINE
 HV1013'OF MARYLAND ROUTE 488, AND 102.5 FEET WEST OF TELEPHONE POLE
 HV1013'60.  A STANDARD DISK SET FLUSH IN CONCRETE HEADWALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5739 ***********************************************************************
 JV5739  DESIGNATION -  HAWKINS POINT GLIDDEN CO TANK
 JV5739  PID         -  JV5739
 JV5739  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5739  COUNTRY     -  US
 JV5739  USGS QUAD   -  CURTIS BAY (2016)
 JV5739
 JV5739                         *CURRENT SURVEY CONTROL
 JV5739  ______________________________________________________________________
 JV5739* NAD 83(1991) POSITION- 39 12 26.58547(N) 076 32 26.47334(W)   ADJUSTED
 JV5739  ______________________________________________________________________
 JV5739  GEOID HEIGHT    -        -32.980 (meters)                     GEOID18
 JV5739  LAPLACE CORR    -         -2.88  (seconds)                    DEFLEC18
 JV5739  HORZ ORDER      -  THIRD
 JV5739
 JV5739.The horizontal coordinates were established by classical geodetic methods
 JV5739.and adjusted by the National Geodetic Survey in January 1992.
 JV5739
 JV5739.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5739.GEOID18 height accuracy estimate available here.
 JV5739
 JV5739.Click photographs - Photos may exist for this station.
 JV5739
 JV5739.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5739
 JV5739. The following values were computed from the NAD 83(1991) position.
 JV5739
 JV5739;                    North         East     Units Scale Factor Converg.
 JV5739;SPC MD       -   171,128.388   439,670.725   MT  0.99996655   +0 17 17.8
 JV5739;SPC MD       -   561,443.72  1,442,486.37   sFT  0.99996655   +0 17 17.8
 JV5739;UTM  18      - 4,340,921.433   366,976.276   MT  0.99981788   -0 58 26.6
 JV5739
 JV5739_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6697640921(NAD 83)
 JV5739
 JV5739                          SUPERSEDED SURVEY CONTROL
 JV5739
 JV5739  NAD 83(1986)-  39 12 26.58158(N)    076 32 26.48295(W) AD(       ) 3
 JV5739  NAD 27      -  39 12 26.19200(N)    076 32 27.61400(W) AD(       ) 3
 JV5739
 JV5739.Superseded values are not recommended for survey control.
 JV5739
 JV5739.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5739.See file dsdata.pdf to determine how the superseded data were derived.
 JV5739
 JV5739_MARKER: 53 = ELEVATED TANK
 JV5739_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV5739+SATELLITE: SATELLITE OBSERVATIONS - January 21, 2002
 JV5739
 JV5739  HISTORY     - Date     Condition        Report By
 JV5739  HISTORY     - 1957     FIRST OBSERVED   CGS
 JV5739  HISTORY     - 1975     GOOD             NGS
 JV5739  HISTORY     - 1979     GOOD             LOCENG
 JV5739  HISTORY     - 1984     GOOD             USPSQD
 JV5739  HISTORY     - 20020121 GOOD             USPSQD
 JV5739
 JV5739                          STATION DESCRIPTION
 JV5739
 JV5739'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5739'STATION IS LOCATED ABOUT 1/2 MILE WEST OF HAWKINS POINT ON THE
 JV5739'NORTH SIDE OF SEVERAL BUILDINGS OF THE GLIDDEN COMPANY.  STATION
 JV5739'IS OF STEEL CONSTRUCTION WITH FOUR LEGS AND IS ABOUT 140 FEET
 JV5739'HIGH.  THE STATION IS PAINTED WHITE WITH THE NAME GLIDDEN IN RED
 JV5739'ON TWO SIDES OF THE TANK.
 JV5739'
 JV5739'THE POINT INTERSECTED WAS THE CENTER OF THE TOP OF THE TANK.
 JV5739'
 JV5739'TO REACH STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND STATE
 JV5739'HIGHWAY 2, JUST NORTH OF GLEN BURNIE, GO NORTH ON U.S. HIGHWAY
 JV5739'301 AND STATE HIGHWAY 2 FOR 1.1 MILES TO A TRAFFIC LIGHT.  TURN
 JV5739'RIGHT AND GO EAST ON STATE HIGHWAY 710 FOR 1.75 MILES TO A T
 JV5739'INTERSECTION.  TURN RIGHT ACROSS DRAW BRIDGE FOR 1.55 MILES TO
 JV5739'FORKS.  KEEP LEFT FORK FOR 0.45 MILE TO REVERSE FORKS.  KEEP
 JV5739'STRAIGHT AHEAD FOR 0.55 MILE TO STATION ON THE RIGHT AS
 JV5739'DESCRIBED.
 JV5739
 JV5739                          STATION RECOVERY (1975)
 JV5739
 JV5739'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5739'STATION RECOVERED AS DESCRIBED.  IT IS BELIEVED THAT THE NAME
 JV5739'GLIDDEN NO LONGER APPEARS ON THE TANK.
 JV5739
 JV5739                          STATION RECOVERY (1979)
 JV5739
 JV5739'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1979 (FFB)
 JV5739'STATION RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV5739'
 JV5739'DISTANCE AND DIRECTION FROM NEAREST TOWN--5.5 MI. NORTHEAST OF GLEN
 JV5739'BURNIE.
 JV5739
 JV5739                          STATION RECOVERY (1984)
 JV5739
 JV5739'RECOVERY NOTE BY US POWER SQUADRON 1984 (WRB)
 JV5739'THE NAME GLIDDEN HAS BEEN REMOVED, TANK COLOR WHITE ONLY, GLIDDEN CO.
 JV5739'NEW NAME IS SCM PIGMENTS.
 JV5739
 JV5739                          STATION RECOVERY (2002)
 JV5739
 JV5739'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV5739'NAME ON TANK IS NOW MILLENNIUM
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7044 ***********************************************************************
 HV7044  DESIGNATION -  HAYDEN
 HV7044  PID         -  HV7044
 HV7044  STATE/COUNTY-  MD/CHARLES
 HV7044  COUNTRY     -  US
 HV7044  USGS QUAD   -  ROCK POINT (2016)
 HV7044
 HV7044                         *CURRENT SURVEY CONTROL
 HV7044  ______________________________________________________________________
 HV7044* NAD 83(1993) POSITION- 38 21 06.27784(N) 076 51 30.68221(W)   ADJUSTED
 HV7044* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7044  ______________________________________________________________________
 HV7044  GEOID HEIGHT    -        -33.635 (meters)                     GEOID18
 HV7044  LAPLACE CORR    -         -2.14  (seconds)                    DEFLEC18
 HV7044  HORZ ORDER      -  THIRD
 HV7044
 HV7044.The horizontal coordinates were established by classical geodetic methods
 HV7044.and adjusted by the National Geodetic Survey in November 1994.
 HV7044
 HV7044.The orthometric height was scaled from a topographic map.
 HV7044
 HV7044.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7044.GEOID18 height accuracy estimate available here.
 HV7044
 HV7044.Click photographs - Photos may exist for this station.
 HV7044
 HV7044.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7044
 HV7044. The following values were computed from the NAD 83(1993) position.
 HV7044
 HV7044;                    North         East     Units Scale Factor Converg.
 HV7044;SPC MD       -    76,056.116   412,366.589   MT  0.99999140   +0 05 19.7
 HV7044;SPC MD       -   249,527.44  1,352,906.05   sFT  0.99999140   +0 05 19.7
 HV7044;SPC VA N     - 2,077,324.743 3,643,470.105   MT  0.99995908   +1 01 28.1
 HV7044;SPC VA N     - 6,815,356.26 11,953,618.17   sFT  0.99995908   +1 01 28.1
 HV7044;UTM  18      - 4,246,477.508   337,602.503   MT  0.99992480   -1 09 12.4
 HV7044
 HV7044!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7044!SPC MD       -   1.00000532  x   0.99999140  =   0.99999672
 HV7044!SPC VA N     -   1.00000532  x   0.99995908  =   0.99996440
 HV7044!UTM  18      -   1.00000532  x   0.99992480  =   0.99993012
 HV7044
 HV7044:                Primary Azimuth Mark                     Grid Az
 HV7044:SPC MD       -  FACT 1908                                138 19 28.5
 HV7044:SPC VA N     -  FACT 1908                                137 23 20.1
 HV7044:UTM  18      -  FACT 1908                                139 34 00.6
 HV7044
 HV7044_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3760246477(NAD 83)
 HV7044
 HV7044|---------------------------------------------------------------------|
 HV7044| PID    Reference Object                     Distance      Geod. Az  |
 HV7044|                                                           dddmmss.s |
 HV7044| HV7041 PERRY 1908                          APPROX. 2.8 KM 1032456.6 |
 HV7044| HV7058 FACT 1908                           APPROX. 2.2 KM 1382448.2 |
 HV7044| CX2860 HAYDEN RM                            11.510 METERS 30526     |
 HV7044|---------------------------------------------------------------------|
 HV7044
 HV7044                          SUPERSEDED SURVEY CONTROL
 HV7044
 HV7044  NAD 83(1991)-  38 21 06.27759(N)    076 51 30.68649(W) AD(       ) 3
 HV7044  NAD 83(1986)-  38 21 06.27780(N)    076 51 30.69793(W) AD(       ) 3
 HV7044  NAD 27      -  38 21 05.76600(N)    076 51 31.76300(W) AD(       ) 3
 HV7044  USSD        -  38 21 06.52800(N)    076 51 31.87500(W) AD(       ) 3
 HV7044
 HV7044.Superseded values are not recommended for survey control.
 HV7044
 HV7044.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7044.See file dsdata.pdf to determine how the superseded data were derived.
 HV7044
 HV7044_MARKER: N = NAIL
 HV7044_SETTING: 0 = UNSPECIFIED SETTING
 HV7044
 HV7044  HISTORY     - Date     Condition        Report By
 HV7044  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7044  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV7044  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV7044
 HV7044                          STATION DESCRIPTION
 HV7044
 HV7044'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7044'ON THE WESTERN SHORE OF WICOMICO RIVER, ABOUT 1 MILE W OF COHOUCK
 HV7044'POINT, ON MARSHY LAND, SURROUNDED BY WATER BUSHES, ABOUT 1 FOOT
 HV7044'ABOVE HIGH WATER, 5 YARDS NW OF SHORE, AND 17 YARDS SE OF LINE OF
 HV7044'TREES ON TOP OF BANK.  STATION MARK IS NAIL IN STUB WITH TOP 3
 HV7044'INCHES ABOVE SURFACE OF GROUND.  REFERENCE MARK IS CENTER OF
 HV7044'STANDARD MONUMENT OF MARYLAND SHELL FISH SURVEY, WHICH IS MADE OF
 HV7044'CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE AT THE TOP AND
 HV7044'BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND SHOWS A CENTER
 HV7044'HOLE SURROUNDED BY A TRIANGLE, WITH COUNTER-SUNK LETTERS M.S.F.C.
 HV7044'ARRANGED AROUND THE VERTEX, AND THE LETTERS U.S.C.S. UNDERNEATH
 HV7044'THE BASE OF THE TRIANGLE.  THE CENTER HOLE IS ALWAYS AT THE
 HV7044'CENTER OF THE MONUMENT AND IF THE MARKING HAS NOT BEEN BROKEN OFF
 HV7044'WITHOUT DISTURBING THE BOTTOM, THE CENTER OF THE SQUARE SECTION
 HV7044'MAY BE USED AS THE LOCATION OF THE REFERENCE MARK.  THE MONUMENT
 HV7044'IS SET VERTICALLY IN THE GROUND, WITH TOP PROJECTING ABOUT 3 TO 5
 HV7044'INCHES ABOVE THE SURFACE.  IT IS 11.51 METERS (37.8 FEET) FROM STATION
 HV7044'N 53 DEG 34 MIN W.  DISTANCES AND BEARINGS TO OTHER POINTS OF
 HV7044'REFERENCE ARE AS FOLLOWS--CHIMNEY ON MIDDLE OF SQUARE HOUSE, 5/8
 HV7044'MILE, S 23 DEG 31 MIN W.  NAIL IN BLAZE IN 18-INCH CEDAR TREE,
 HV7044'23.45 METERS (76.9 FEET), S 82 DEG 39 MIN W.  NAIL IN BLAZE IN
 HV7044'8-INCH LOCUST TREE, 16.55 METERS (54.3 FEET), N 66 DEG 12 MIN W.
 HV7044'NAIL IN BLAZE IN 8-INCH OAK TREE, 18.74 METERS (61.5 FEET), N 8
 HV7044'DEG 6 MIN W.  CHIMNEY ON KEY HOUSE, 1 3/4 MILES, N 54 DEG 10 MIN
 HV7044'E.  CHIMNEY ON MADDOX HOUSE, 3-1/4 MILES, S 57 DEG 7 MIN E.  RIGHT
 HV7044'CHIMNEY OUTSIDE OF OLD HOUSE, 1-5/8 MILES, S 47 DEG 4 MIN E.
 HV7044'BETWEEN TWO MAIN CHIMNEYS OF LARGE HOUSE ON CHAPTICO WHARF, 2-3/8
 HV7044'MILES, S 36 DEG 24 MIN E.  W ROOF PEAK OF HOUSE ON CHAPTICO WHARF,
 HV7044'2-1/4 MILES, S 34 DEG 44 MIN E.
 HV7044
 HV7044                          STATION RECOVERY (1942)
 HV7044
 HV7044'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV7044'ORIGINAL STATION WHICH WAS MARKED WITH A NAIL IN STUB HAS BEEN
 HV7044'LOST.  A STAKE IN APPROXIMATE LOCATION WAS FOUND BUT ITS POSITION
 HV7044'INDICATES THAT EROSION OR ICE HAS NULLIFIED ITS VALUE.  THE
 HV7044'REFERENCE MARK, A STANDARD MARK OF THE MARYLAND SHELL FISH
 HV7044'COMMISSION, WAS RECOVERED.  STATION IS LOCATED ON THE FIRST POINT
 HV7044'SW OF THE MAIN RESIDENCE ON THE WEST HATTON ESTATE, ON THE S SIDE
 HV7044'OF POINT, 150 FEET W OF THE EXTREME POINT OF LAND, 6 PACES OUT
 HV7044'FROM CUT BANK, 12 PACES SW OF SW END OF RIPRAP FENCE.
 HV7044'
 HV7044'REACHED FROM LA PLATA BY GOING S ON U.S. HIGHWAY 301 FOR 11.2
 HV7044'MILES (NEWBURG), THENCE LEFT, E, FOR 0.2 MILE, THENCE LEFT ON
 HV7044'PAVED ROAD AS PER SIGN WEST HATTON, FOR 3.8 MILES TO MOUNT
 HV7044'VICTORIA, HERE GO E ON GRAVEL ROAD, ROAD TO WEST HATTON ESTATE, GO
 HV7044'1.3 MILES TO THE MAIN ENTRANCE TO ESTATE, CONTINUE INTO ESTATE FOR
 HV7044'0.9 MILE, TURN RIGHT ON FARM ROAD ALONG NET WIRE FENCE, GO 0.4
 HV7044'MILE, BEAR RIGHT AND GO 0.4 MILE, THENCE LEFT ALONG FENCE TO WHERE
 HV7044'ROAD PASSES THROUGH GATE, HERE TURN LEFT AND FOLLOW ALONG THE S
 HV7044'EDGE OF FIELD FOR ABOUT 1/4 MILE TO STATION SITE, WHICH IS DOWN
 HV7044'OVER THE BANK AT THIS POINT. OTHER ROUTES TO THE POINT AND STATION
 HV7044'INSOFAR AS THE ESTATE IS CONCERNED CAN BE HAD BY CONTACTING SOME
 HV7044'OF THE PERSONS WORKING THERE.  STATION IS ABOUT 1 FOOT ABOVE
 HV7044'HIGH-WATER MARK.
 HV7044
 HV7044                          STATION RECOVERY (1942)
 HV7044
 HV7044'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV7044'STATION NOT RECOVERED, DUE TO ITS AGE AND NATURE IT IS PROBABLY
 HV7044'DESTROYED.  REFERENCE MARK RECOVERED AS DESCRIBED WITH THE
 HV7044'EXCEPTION NOTED BELOW--
 HV7044'
 HV7044'ALL TREES REFERRED TO IN THE DESCRIPTION ARE GONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG4039 ***********************************************************************
 DG4039  DESIGNATION -  HAYES AZ MK
 DG4039  PID         -  DG4039
 DG4039  STATE/COUNTY-  MD/WORCESTER
 DG4039  COUNTRY     -  US
 DG4039  USGS QUAD   -  BERLIN (2016)
 DG4039
 DG4039                         *CURRENT SURVEY CONTROL
 DG4039  ______________________________________________________________________
 DG4039* NAD 83(1986) POSITION- 38 18 11.8    (N) 075 13 18.2    (W)   HD_HELD2
 DG4039* NAVD 88 ORTHO HEIGHT -    12.801 (meters)       42.00  (feet) ADJUSTED
 DG4039  ______________________________________________________________________
 DG4039  GEOID HEIGHT    -        -36.061 (meters)                     GEOID18
 DG4039  DYNAMIC HEIGHT  -         12.793 (meters)       41.97  (feet) COMP
 DG4039  MODELED GRAVITY -    980,002.1   (mgal)                       NAVD 88
 DG4039
 DG4039  VERT ORDER      -  SECOND    CLASS I
 DG4039
 DG4039.The horizontal coordinates were established by autonomous hand held GPS
 DG4039.observations and have an estimated accuracy of +/- 10 meters.
 DG4039
 DG4039.The orthometric height was determined by differential leveling and
 DG4039.adjusted by the NATIONAL GEODETIC SURVEY
 DG4039.in June 2004.
 DG4039
 DG4039.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG4039.GEOID18 height accuracy estimate available here.
 DG4039
 DG4039.Click photographs - Photos may exist for this station.
 DG4039
 DG4039.The dynamic height is computed by dividing the NAVD 88
 DG4039.geopotential number by the normal gravity value computed on the
 DG4039.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG4039.degrees latitude (g = 980.6199 gals.).
 DG4039
 DG4039.The modeled gravity was interpolated from observed gravity values.
 DG4039
 DG4039;                    North         East    Units  Estimated Accuracy
 DG4039;SPC MD       -    72,182.      555,535.      MT  (+/- 10 meters HH2 GPS)
 DG4039
 DG4039_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8061339488(NAD 83)
 DG4039
 DG4039                          SUPERSEDED SURVEY CONTROL
 DG4039
 DG4039.No superseded survey control is available for this station.
 DG4039
 DG4039_MARKER: DD = SURVEY DISK
 DG4039_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG4039_STAMPING: HAYES AZ 1962
 DG4039_MARK LOGO: MDBCSM
 DG4039_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG4039_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG4039+STABILITY: SURFACE MOTION
 DG4039_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG4039+SATELLITE: SATELLITE OBSERVATIONS - December 06, 1999
 DG4039
 DG4039  HISTORY     - Date     Condition        Report By
 DG4039  HISTORY     - 1962     MONUMENTED       MDBCSM
 DG4039  HISTORY     - 19991206 GOOD             MDSHA
 DG4039
 DG4039                          STATION DESCRIPTION
 DG4039
 DG4039'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 DG4039'THE STATION IS LOCATED 1.5 MILES (2.4 KM) SOUTH OF BERLIN, 5.1 MILES
 DG4039'(8.2 KM) NORTHEAST OF NEWARK, WORCESTER COUNTY.  TO REACH THE STATION
 DG4039'FROM THE U.S.HIGHWAY 113 BRIDGE OVER U.S.HIGHWAY 50 IN BERLIN, PROCEED
 DG4039'SOUTH ON U.S.HIGHWAY 113 FOR 2.9 MILES (4.7 KM) TO THE STATION ON THE
 DG4039'LEFT.  IT IS A STANDARD MARYLAND CONTROL SURVEY DISK SET IN THE TOP OF
 DG4039'AN 8 INCH ROUND CONCRETE MONUMENT, 28.3 FEET (8.6 M) EAST OF THE
 DG4039'CENTER OF THE NORTH BOUND LANES OF THE HIGHWAY, 29.5 FEET (9.0 M)
 DG4039'NORTHWEST OF POWER POLE NUMBER 823-90-22, 14.5 FEET (4.4 M) NORTH OF
 DG4039'THE EAST END OF A 24 INCH CONCRETE DRAINAGE PIPE RUNNING UNDER THE
 DG4039'HIGHWAY, 187.5 FEET (57.2 M) SOUTH OF TELEPHONE POLE NUMBER 68, 191.0
 DG4039'FEET (58.2 M) SOUTH OF THE CENTER OF THE SOUTH ENTRANCE TO A 1 1/2
 DG4039'STORY DWELLING, SET FLUSH WITH THE GROUND AND STAMPED HAYES AZ 1962.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1505 ***********************************************************************
 JW1505  DESIGNATION -  HAYSTACK
 JW1505  PID         -  JW1505
 JW1505  STATE/COUNTY-  MD/ALLEGANY
 JW1505  COUNTRY     -  US
 JW1505  USGS QUAD   -  CUMBERLAND (2016)
 JW1505
 JW1505                         *CURRENT SURVEY CONTROL
 JW1505  ______________________________________________________________________
 JW1505* NAD 83(1995) POSITION- 39 37 46.48891(N) 078 49 15.97509(W)   ADJUSTED
 JW1505* NAVD 88 ORTHO HEIGHT -   500.    (meters)     1640.    (feet) SCALED
 JW1505  ______________________________________________________________________
 JW1505  GEOID HEIGHT    -        -32.544 (meters)                     GEOID18
 JW1505  LAPLACE CORR    -         -7.45  (seconds)                    DEFLEC18
 JW1505  HORZ ORDER      -  SECOND
 JW1505
 JW1505.The horizontal coordinates were established by classical geodetic methods
 JW1505.and adjusted by the National Geodetic Survey in April 1998.
 JW1505
 JW1505.The orthometric height was scaled from a topographic map.
 JW1505
 JW1505.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1505.GEOID18 height accuracy estimate available here.
 JW1505
 JW1505.Click photographs - Photos may exist for this station.
 JW1505
 JW1505.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1505
 JW1505. The following values were computed from the NAD 83(1995) position.
 JW1505
 JW1505;                    North         East     Units Scale Factor Converg.
 JW1505;SPC MD       -   219,461.536   243,656.550   MT  1.00003635   -1 08 34.8
 JW1505;SPC MD       -   720,016.72    799,396.53   sFT  1.00003635   -1 08 34.8
 JW1505;SPC PA S     -    33,451.785   508,038.586   MT  1.00006137   -0 41 41.7
 JW1505;SPC PA S     -   109,749.73  1,666,789.93   sFT  1.00006137   -0 41 41.7
 JW1505;SPC WV N     -   125,623.067   658,281.561   MT  0.99994074   +0 25 58.7
 JW1505;SPC WV N     -   412,148.35  2,159,712.09   sFT  0.99994074   +0 25 58.7
 JW1505;UTM  17      - 4,388,914.067   686,999.466   MT  1.00003054   +1 23 24.5
 JW1505
 JW1505!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1505!SPC MD       -   0.99992670  x   1.00003635  =   0.99996305
 JW1505!SPC PA S     -   0.99992670  x   1.00006137  =   0.99998806
 JW1505!SPC WV N     -   0.99992670  x   0.99994074  =   0.99986744
 JW1505!UTM  17      -   0.99992670  x   1.00003054  =   0.99995724
 JW1505
 JW1505:                Primary Azimuth Mark                     Grid Az
 JW1505:SPC MD       -  MEADOWS                                  289 39 41.8
 JW1505:SPC PA S     -  MEADOWS                                  289 12 48.7
 JW1505:SPC WV N     -  MEADOWS                                  288 05 08.3
 JW1505:UTM  17      -  MEADOWS                                  287 07 42.5
 JW1505
 JW1505_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD8699988914(NAD 83)
 JW1505
 JW1505|---------------------------------------------------------------------|
 JW1505| PID    Reference Object                     Distance      Geod. Az  |
 JW1505|                                                           dddmmss.s |
 JW1505| CJ9956 HAYSTACK RM 1                        18.855 METERS 11441     |
 JW1505| CJ9957 HAYSTACK RM 2                        18.474 METERS 25211     |
 JW1505| JW1519 MEADOWS                             APPROX. 8.5 KM 2883107.0 |
 JW1505|---------------------------------------------------------------------|
 JW1505
 JW1505                          SUPERSEDED SURVEY CONTROL
 JW1505
 JW1505  NAD 83(1991)-  39 37 46.48896(N)    078 49 15.97730(W) AD(       ) 2
 JW1505  NAD 83(1986)-  39 37 46.49275(N)    078 49 15.98416(W) AD(       ) 2
 JW1505  NAD 27      -  39 37 46.17800(N)    078 49 16.91500(W) AD(       ) 2
 JW1505
 JW1505.Superseded values are not recommended for survey control.
 JW1505
 JW1505.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1505.See file dsdata.pdf to determine how the superseded data were derived.
 JW1505
 JW1505_MARKER: DS = TRIANGULATION STATION DISK
 JW1505_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1505_STAMPING: HAYSTACK 1955
 JW1505_MARK LOGO: CGS
 JW1505_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1505+STABILITY: SURFACE MOTION
 JW1505
 JW1505  HISTORY     - Date     Condition        Report By
 JW1505  HISTORY     - 1955     MONUMENTED       CGS
 JW1505
 JW1505                          STATION DESCRIPTION
 JW1505
 JW1505'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JW1505'THE STATION IS ABOUT 6 MILES EAST OF FROSTBURG, 3-1/2 MILES
 JW1505'SOUTHWEST OF CUMBERLAND, 200 FEET NORTH OF A POWERLINE, 18 FEET
 JW1505'EAST OF THE CENTER OF A TRACK ROAD AND 5 FEET SOUTHEAST OF A 4
 JW1505'IN X 4 IN WHITE WITNESS POST.
 JW1505'
 JW1505'TO REACH THE STATION FROM THE ALGONQUIN HOTEL ON BALTIMORE
 JW1505'STREET IN CUMBERLAND, GO SOUTH AND WEST ON U.S. HIGHWAY 220 FOR
 JW1505'1.1 MILES TO DINGLE CIRCLE, GO SOUTHWEST ON BRADDOCK STREET FOR
 JW1505'1.5 MILES TO A SIDE STREET ON THE LEFT, TURN LEFT ON THE SIDE
 JW1505'STREET AND GO 0.05 MILE, TURN LEFT, TAKING THE LEFT ONE OF TWO
 JW1505'ROADS AND GO 0.35 MILE TO A POWERLINE, CONTINUE STRAIGHT AHEAD
 JW1505'FOR 0.3 MILE TO A FORK, TAKE THE RIGHT ROAD AND GO 0.65 TO THE
 JW1505'STATION ON THE LEFT.
 JW1505'
 JW1505'THE STATION MARK PROJECTS 4 INCHES, AND THE DISK IS STAMPED
 JW1505'HAYSTACK 1955.
 JW1505'
 JW1505'REFERENCE MARK 1 IS 74 FEET EAST OF THE CENTER OF THE TRACK
 JW1505'ROAD.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1505'STAMPED HAYSTACK NO 1 1955.
 JW1505'
 JW1505'REFERENCE MARK 2 IS 40 FEET WEST OF THE CENTER OF THE TRACK
 JW1505'ROAD.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JW1505'STAMPED HAYSTACK NO 2 1955.
 JW1505'
 JW1505'NO SUITABLE LOCATION COULD BE FOUND FOR AN AZIMUTH MARK.
 JW1505'
 JW1505'HEIGHT OF LIGHT ABOVE STATION MARK 18 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR2410 ***********************************************************************
 DR2410  HT_MOD      -  This is a Height Modernization Survey Station.
 DR2410  DESIGNATION -  HAZEL ODC
 DR2410  PID         -  DR2410
 DR2410  STATE/COUNTY-  MD/WICOMICO
 DR2410  COUNTRY     -  US
 DR2410  USGS QUAD   -  EDEN (2016)
 DR2410
 DR2410                         *CURRENT SURVEY CONTROL
 DR2410  ______________________________________________________________________
 DR2410* NAD 83(2011) POSITION- 38 18 16.66664(N) 075 44 34.08128(W)   ADJUSTED
 DR2410* NAD 83(2011) ELLIP HT-   -31.863 (meters)        (06/05/19)   ADJUSTED
 DR2410* NAD 83(2011) EPOCH   -  2010.00
 DR2410* NAVD 88 ORTHO HEIGHT -     4.00  (meters)       13.1   (feet) GPS OBS
 DR2410  ______________________________________________________________________
 DR2410  NAVD 88 orthometric height was determined with geoid model    GEOID12B
 DR2410  GEOID HEIGHT    -        -35.811 (meters)                     GEOID12B
 DR2410  GEOID HEIGHT    -        -35.822 (meters)                     GEOID18
 DR2410  NAD 83(2011) X  -  1,234,211.464 (meters)                     COMP
 DR2410  NAD 83(2011) Y  - -4,857,160.961 (meters)                     COMP
 DR2410  NAD 83(2011) Z  -  3,932,014.305 (meters)                     COMP
 DR2410  LAPLACE CORR    -         -1.30  (seconds)                    DEFLEC18
 DR2410
 DR2410  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR2410  Standards:
 DR2410         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR2410            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR2410  -------------------------------------------------------------------
 DR2410  NETWORK    0.84   0.65           0.42   0.17   0.33      0.03058061
 DR2410  -------------------------------------------------------------------
 DR2410  Click here for local accuracies and other accuracy information.
 DR2410
 DR2410.The horizontal coordinates were established by GPS observations
 DR2410.and adjusted by the NATIONAL PARK SERVICE in June 2019.
 DR2410
 DR2410.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR2410.been affixed to the stable North American tectonic plate. See 
 DR2410.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR2410
 DR2410.The horizontal coordinates are valid at the epoch date displayed above
 DR2410.which is a decimal equivalence of Year/Month/Day.
 DR2410
 DR2410.The orthometric height was determined by GPS observations and a
 DR2410.high-resolution geoid model using precise GPS observation and
 DR2410.processing techniques.
 DR2410
 DR2410.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR2410.GEOID18 height accuracy estimate available here.
 DR2410
 DR2410.Click photographs - Photos may exist for this station.
 DR2410
 DR2410.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR2410
 DR2410.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR2410
 DR2410.The ellipsoidal height was determined by GPS observations
 DR2410.and is referenced to NAD 83.
 DR2410
 DR2410. The following values were computed from the NAD 83(2011) position.
 DR2410
 DR2410;                    North         East     Units Scale Factor Converg.
 DR2410;SPC MD       -    71,573.941   509,961.033   MT  0.99999920   +0 47 20.6
 DR2410;SPC MD       -   234,822.17  1,673,097.16   sFT  0.99999920   +0 47 20.6
 DR2410;UTM  18      - 4,239,876.142   435,054.385   MT  0.99965194   -0 27 37.6
 DR2410
 DR2410!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR2410!SPC MD       -   1.00000500  x   0.99999920  =   1.00000420
 DR2410!UTM  18      -   1.00000500  x   0.99965194  =   0.99965694
 DR2410
 DR2410_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3505439876(NAD 83)
 DR2410
 DR2410                          SUPERSEDED SURVEY CONTROL
 DR2410
 DR2410.No superseded survey control is available for this station.
 DR2410
 DR2410_MARKER: F = FLANGE-ENCASED ROD
 DR2410_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 DR2410_STAMPING: 2015ASISHODCR
 DR2410_MARK LOGO: NPS
 DR2410_PROJECTION: RECESSED 8 CENTIMETERS
 DR2410_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR2410_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 DR2410_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR2410+SATELLITE: SATELLITE OBSERVATIONS - March 01, 2015
 DR2410_ROD/PIPE-DEPTH: 15.8 meters
 DR2410_SLEEVE-DEPTH  : 0.9 meters
 DR2410
 DR2410  HISTORY     - Date     Condition        Report By
 DR2410  HISTORY     - 20150301 MONUMENTED       NPS
 DR2410
 DR2410                          STATION DESCRIPTION
 DR2410
 DR2410'DESCRIBED BY NATIONAL PARK SERVICE 2015 (NTW)
 DR2410'THE STATION IS LOCATED ABOUT 6.8 MI (10.9 KM) WEST OF FRUITLAND, 6.1
 DR2410'MI (9.8 KM) EAST-SOUTHEAST OF WETIPQUIN AND 5.2 MI (8.4 KM)
 DR2410'WEST-NORTHWEST OF EDEN.
 DR2410'
 DR2410'THE STATION IS LOCATED AT THE HAZEL OUTDOOR DISCOVERY CENTER IN EDEN,
 DR2410'MD. FROM EDEN, HEAD SOUTHWEST ON US-13 S FOR 4.2 KM (2.6 MI) AND TURN
 DR2410'RIGHT ONTO ALLEN ROAD. AFTER 4.3 KM (2.7 MI) TAKE A SLIGHT RIGHT ONTO
 DR2410'COTTMAN ROAD AND CONTINUE ONTO COLLINS WHARF ROAD. CONTINUE FOR 6.8 KM
 DR2410'(4.2 MI) AND TAKE RIGHT ONTO COOPER ROAD FOR 0.8 KM (0.5 MI), THEN
 DR2410'TURN RIGHT AT THE HODC.
 DR2410'
 DR2410'THE STATION IS 40 M (131.2 FT) SOUTHEAST OF THE HODC LODGE AND 1.4 M
 DR2410'(4.6 FT) NORTHWEST OF AN ORANGE CARSONITE WITNESS POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8145 ***********************************************************************
 HV8145  DESIGNATION -  HAZLETON
 HV8145  PID         -  HV8145
 HV8145  STATE/COUNTY-  MD/CALVERT
 HV8145  COUNTRY     -  US
 HV8145  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV8145
 HV8145                         *CURRENT SURVEY CONTROL
 HV8145  ______________________________________________________________________
 HV8145* NAD 83(1991) POSITION- 38 20 10.25745(N) 076 26 47.68739(W)   ADJUSTED
 HV8145* NAVD 88 ORTHO HEIGHT -     0.    (meters)        0.    (feet) SCALED
 HV8145  ______________________________________________________________________
 HV8145  GEOID HEIGHT    -        -34.398 (meters)                     GEOID18
 HV8145  LAPLACE CORR    -         -4.94  (seconds)                    DEFLEC18
 HV8145  HORZ ORDER      -  THIRD
 HV8145
 HV8145.The horizontal coordinates were established by classical geodetic methods
 HV8145.and adjusted by the National Geodetic Survey in January 1992.
 HV8145
 HV8145.The orthometric height was scaled from a topographic map.
 HV8145
 HV8145.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8145.GEOID18 height accuracy estimate available here.
 HV8145
 HV8145.Click photographs - Photos may exist for this station.
 HV8145
 HV8145.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8145
 HV8145. The following values were computed from the NAD 83(1991) position.
 HV8145
 HV8145;                    North         East     Units Scale Factor Converg.
 HV8145;SPC MD       -    74,465.867   448,384.925   MT  0.99999390   +0 20 50.4
 HV8145;SPC MD       -   244,310.10  1,471,076.21   sFT  0.99999390   +0 20 50.4
 HV8145;UTM  18      - 4,244,106.319   373,573.009   MT  0.99979685   -0 53 50.6
 HV8145
 HV8145!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8145!SPC MD       -   1.00000535  x   0.99999390  =   0.99999925
 HV8145!UTM  18      -   1.00000535  x   0.99979685  =   0.99980220
 HV8145
 HV8145_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7357344106(NAD 83)
 HV8145
 HV8145                          SUPERSEDED SURVEY CONTROL
 HV8145
 HV8145  NAD 83(1986)-  38 20 10.25808(N)    076 26 47.70510(W) AD(       ) 3
 HV8145
 HV8145.Superseded values are not recommended for survey control.
 HV8145
 HV8145.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8145.See file dsdata.pdf to determine how the superseded data were derived.
 HV8145
 HV8145_MARKER: N = NAIL
 HV8145_SETTING: 0 = UNSPECIFIED SETTING
 HV8145_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8145_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV8145
 HV8145  HISTORY     - Date     Condition        Report By
 HV8145  HISTORY     - 1987     MONUMENTED       NOS
 HV8145
 HV8145                          STATION DESCRIPTION
 HV8145
 HV8145'DESCRIBED BY NATIONAL OCEAN SERVICE 1987 (REM)
 HV8145'THE STATION IS LOCATED ON A T SHAPED PIER ON THE EAST SHORE OF ST.
 HV8145'JOHN CREEK,WEST OF THE TOWN OF OLIVET,MD AND NORTH OF THE JUNCTION
 HV8145'OF MILL AND ST. JOHN CREEKS.
 HV8145'
 HV8145'THE STATION WAS ESTABLISHED BY BOAT.
 HV8145'
 HV8145'THE STATION IS A PK NAIL WITH ORANGE FLAGGING,DRIVEN INTO THE WOOD
 HV8145'PIER DECK,1.150M(3.77 FT) SOUTH FROM THE NEARSHORE EDGE OF
 HV8145'DECK,1.228M(4.03 FT) NORTH FROM THE OFFSHORE EDGE OF DECK,AND 4.694M
 HV8145'(15.40 FT) EAST FROM THE END OF THE PIER.
 HV8145'PERMISSION FOR ACCESS TO PROPERTY WAS OBTAINED FROM OWNER
 HV8145'MR. HAZLETON, PHONE 326-4170.
 HV8145'
 HV8145'HEIGHT OF LIGHT SHOWN WAS 1.500 METERS ABOVE THE MARK.
 HV8145'
 HV8145'DESCRIBED BY ED MARTIN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1879 ***********************************************************************
 HU1879  DESIGNATION -  HAZZARD
 HU1879  PID         -  HU1879
 HU1879  STATE/COUNTY-  MD/SOMERSET
 HU1879  COUNTRY     -  US
 HU1879  USGS QUAD   -  MARION (2016)
 HU1879
 HU1879                         *CURRENT SURVEY CONTROL
 HU1879  ______________________________________________________________________
 HU1879* NAD 83(1993) POSITION- 38 03 38.04916(N) 075 52 28.67914(W)   ADJUSTED
 HU1879* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1879  ______________________________________________________________________
 HU1879  GEOID HEIGHT    -        -35.977 (meters)                     GEOID18
 HU1879  LAPLACE CORR    -         -1.49  (seconds)                    DEFLEC18
 HU1879  HORZ ORDER      -  THIRD
 HU1879
 HU1879.The horizontal coordinates were established by classical geodetic methods
 HU1879.and adjusted by the National Geodetic Survey in November 1994.
 HU1879
 HU1879.The orthometric height was scaled from a topographic map.
 HU1879
 HU1879.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1879.GEOID18 height accuracy estimate available here.
 HU1879
 HU1879.Click photographs - Photos may exist for this station.
 HU1879
 HU1879.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1879
 HU1879. The following values were computed from the NAD 83(1993) position.
 HU1879
 HU1879;                    North         East     Units Scale Factor Converg.
 HU1879;SPC MD       -    44,334.207   498,764.856   MT  1.00005027   +0 42 22.7
 HU1879;SPC MD       -   145,453.14  1,636,364.37   sFT  1.00005027   +0 42 22.7
 HU1879;UTM  18      - 4,212,896.391   423,272.031   MT  0.99967251   -0 32 21.2
 HU1879
 HU1879!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1879!SPC MD       -   1.00000569  x   1.00005027  =   1.00005596
 HU1879!UTM  18      -   1.00000569  x   0.99967251  =   0.99967820
 HU1879
 HU1879:                Primary Azimuth Mark                     Grid Az
 HU1879:SPC MD       -  JAMES ISLAND LIGHTHOUSE                  198 53 04.9
 HU1879:UTM  18      -  JAMES ISLAND LIGHTHOUSE                  200 07 48.8
 HU1879
 HU1879_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2327212896(NAD 83)
 HU1879
 HU1879|---------------------------------------------------------------------|
 HU1879| PID    Reference Object                     Distance      Geod. Az  |
 HU1879|                                                           dddmmss.s |
 HU1879| FW1360 JAMES ISLAND LIGHTHOUSE             APPROX.11.4 KM 1993527.6 |
 HU1879| HU1890 DEAL ISLAND CHURCH SPIRE            APPROX.12.3 KM 3282146.2 |
 HU1879|---------------------------------------------------------------------|
 HU1879
 HU1879                          SUPERSEDED SURVEY CONTROL
 HU1879
 HU1879  NAD 83(1991)-  38 03 38.04810(N)    075 52 28.68253(W) AD(       ) 3
 HU1879  NAD 83(1986)-  38 03 38.04828(N)    075 52 28.70103(W) AD(       ) 3
 HU1879  NAD 27      -  38 03 37.63900(N)    075 52 29.95400(W) AD(       ) 3
 HU1879  USSD        -  38 03 37.99800(N)    075 52 29.68100(W) AD(       ) 3
 HU1879
 HU1879.Superseded values are not recommended for survey control.
 HU1879
 HU1879.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1879.See file dsdata.pdf to determine how the superseded data were derived.
 HU1879
 HU1879_MARKER: Z = SEE DESCRIPTION
 HU1879_SETTING: 0 = UNSPECIFIED SETTING
 HU1879_MARK LOGO: CGS
 HU1879_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1879
 HU1879  HISTORY     - Date     Condition        Report By
 HU1879  HISTORY     - 1901     MONUMENTED       CGS
 HU1879  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1879
 HU1879                          STATION DESCRIPTION
 HU1879
 HU1879'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (FFW)
 HU1879'STATION IS ON EASTERN SIDE OF TANGIER SOUND, ON POINT AT N SIDE
 HU1879'OF ENTRANCE TO BIG ANNEMESSEX RIVER AND S SIDE OF HAZARD COVE, ON
 HU1879'A MOUND ABOUT 12 FEET ABOVE HIGH WATER.  STATION MARKED BY A
 HU1879'LENGTH OF 4-INCH DRAINTILE PIPE.
 HU1879
 HU1879                          STATION RECOVERY (1942)
 HU1879
 HU1879'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1879'A THOROUGH SEARCH WAS MADE AT THE POINT MENTIONED IN DESCRIPTION
 HU1879'AND THE POINT WHICH WAS 12 FEET ABOVE HIGH WATER HAS WASHED
 HU1879'AWAY.  EROSION AND WASHING HAS LEFT A LOT OF THIS TRACT OF LAND
 HU1879'UNDER WATER, SO THE STATION IS BELIEVED LOST.
 HU1879'
 HU1879'IT IS RECOMMENDED THAT THE STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI8511 ***********************************************************************
 AI8511  DESIGNATION -  HC 109
 AI8511  PID         -  AI8511
 AI8511  STATE/COUNTY-  MD/HOWARD
 AI8511  COUNTRY     -  US
 AI8511  USGS QUAD   -  SAVAGE (2016)
 AI8511
 AI8511                         *CURRENT SURVEY CONTROL
 AI8511  ______________________________________________________________________
 AI8511* NAD 83(2011) POSITION- 39 11 36.15243(N) 076 51 56.80133(W)   ADJUSTED
 AI8511* NAD 83(2011) ELLIP HT-    91.679 (meters)        (06/27/12)   ADJUSTED
 AI8511* NAD 83(2011) EPOCH   -  2010.00
 AI8511* NAVD 88 ORTHO HEIGHT -   123.9   (meters)      406.    (feet) GPS OBS
 AI8511  ______________________________________________________________________
 AI8511  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AI8511  GEOID HEIGHT    -        -32.156 (meters)                     GEOID99
 AI8511  GEOID HEIGHT    -        -32.174 (meters)                     GEOID18
 AI8511  NAD 83(2011) X  -  1,124,771.569 (meters)                     COMP
 AI8511  NAD 83(2011) Y  - -4,820,373.714 (meters)                     COMP
 AI8511  NAD 83(2011) Z  -  4,009,035.936 (meters)                     COMP
 AI8511  LAPLACE CORR    -         -3.63  (seconds)                    DEFLEC18
 AI8511
 AI8511  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AI8511  Standards:
 AI8511         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AI8511            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AI8511  -------------------------------------------------------------------
 AI8511  NETWORK    1.37   1.51           0.58   0.54   0.77     -0.16286812
 AI8511  -------------------------------------------------------------------
 AI8511  Click here for local accuracies and other accuracy information.
 AI8511
 AI8511.The horizontal coordinates were established by GPS observations
 AI8511.and adjusted by the National Geodetic Survey in June 2012.
 AI8511
 AI8511.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI8511.been affixed to the stable North American tectonic plate. See 
 AI8511.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AI8511
 AI8511.The horizontal coordinates are valid at the epoch date displayed above
 AI8511.which is a decimal equivalence of Year/Month/Day.
 AI8511
 AI8511.The orthometric height was determined by GPS observations and a
 AI8511.high-resolution geoid model.
 AI8511
 AI8511.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI8511.GEOID18 height accuracy estimate available here.
 AI8511
 AI8511.Click photographs - Photos may exist for this station.
 AI8511
 AI8511.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AI8511
 AI8511.The Laplace correction was computed from DEFLEC18 derived deflections.
 AI8511
 AI8511.The ellipsoidal height was determined by GPS observations
 AI8511.and is referenced to NAD 83.
 AI8511
 AI8511. The following values were computed from the NAD 83(2011) position.
 AI8511
 AI8511;                    North         East     Units Scale Factor Converg.
 AI8511;SPC MD       -   169,481.875   411,595.033   MT  0.99996517   +0 05 03.3
 AI8511;SPC MD       -   556,041.78  1,350,374.70   sFT  0.99996517   +0 05 03.3
 AI8511;UTM  18      - 4,339,894.236   338,873.889   MT  0.99991967   -1 10 45.5
 AI8511
 AI8511!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI8511!SPC MD       -   0.99998562  x   0.99996517  =   0.99995079
 AI8511!UTM  18      -   0.99998562  x   0.99991967  =   0.99990529
 AI8511
 AI8511_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3887339894(NAD 83)
 AI8511
 AI8511                          SUPERSEDED SURVEY CONTROL
 AI8511
 AI8511  NAD 83(2007)-  39 11 36.15241(N)    076 51 56.80213(W) AD(2002.00) 0
 AI8511  ELLIP H (02/10/07)   91.708  (m)                       GP(2002.00)    
 AI8511  ELLIP H (08/30/02)   91.702  (m)                       GP(       ) 4 2
 AI8511  NAD 83(1991)-  39 11 36.15232(N)    076 51 56.80161(W) AD(       ) 1
 AI8511  ELLIP H (11/16/00)   91.627  (m)                       GP(       ) 4 1
 AI8511
 AI8511.Superseded values are not recommended for survey control.
 AI8511
 AI8511.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI8511.See file dsdata.pdf to determine how the superseded data were derived.
 AI8511
 AI8511_MARKER: DD = SURVEY DISK
 AI8511_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AI8511_STAMPING: HC 109
 AI8511_MARK LOGO: NGS
 AI8511_PROJECTION: FLUSH
 AI8511_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 AI8511_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AI8511+STABILITY: SURFACE MOTION
 AI8511_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AI8511+SATELLITE: SATELLITE OBSERVATIONS - September 15, 2000
 AI8511
 AI8511  HISTORY     - Date     Condition        Report By
 AI8511  HISTORY     - 1990     MONUMENTED       MD-027
 AI8511  HISTORY     - 20000915 GOOD             MD-027
 AI8511  HISTORY     - 20110326 GOOD             NGS
 AI8511
 AI8511                          STATION DESCRIPTION
 AI8511
 AI8511'DESCRIBED BY HOWARD COUNTY MARYLAND 2000 (RFM)
 AI8511'DESCRIPTION BY HOWARD COUNTY  2000.  THE STATION IS IN THE CITY OF
 AI8511'OLUMBIA ON THE FRONT YARD OF  CHRIST MEMORIAL PRESBITERY  ON
 AI8511'SHAKER DRIVE. TO REACH THE STATION FROM THE INTERSECTION OF
 AI8511'STATE   HIGHWAY 29 AND STATE HIGHWAY 32 GO 0.7 MILES NORTH ALONG
 AI8511'ROUTE      29  TO EXIT (SHAKER DRIVE SENECA DRIVE), EXIT AND GO NORTH
 AI8511'ON      SHAKER  DRIVE FOR 0.3 MILES TO THE  PRESBITERY AND THE MARK
 AI8511'ON THE      RIGHT.   THE STATION IS  9.3 FEET SOUTH OF A 4 FEET
 AI8511'CONCRETE
 AI8511'WALK      LEADING TO  THE RECTORY ENTRANCE, 24 FEET TO A LIGHT POLE,
 AI8511'97 FEET      TO THE  SOUTHWEST CORNER OF THE RECTORY BUILDING AND
 AI8511'87.6 FEET  TO     THE  NORTWEST CORNER OF SAID BUILDING.    THE
 AI8511'STATION   IS A     STANDARD   NATIONAL GEODETIC SURVEY BENCH
 AI8511'MARKSET ON   CONCRETE     BASE  2  INCHES BELOW GROUND.   THIS
 AI8511'STATION WAS SET BY   HOWARD     COUNTY  GEODETIC SURVEY DIVISION  IN
 AI8511'1990 AT THE REQUEST   OF     NATIONAL  GEODETIC SURVEY, TO REPLACE
 AI8511'OLD  BENCH MARK C 109   WHICH     WAS TO BE  DESTROYED.
 AI8511'
 AI8511
 AI8511                          STATION RECOVERY (2011)
 AI8511
 AI8511'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (DRD)
 AI8511'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3585 ***********************************************************************
 JU3585  DESIGNATION -  HE 1898
 JU3585  PID         -  JU3585
 JU3585  STATE/COUNTY-  MD/CECIL
 JU3585  COUNTRY     -  US
 JU3585  USGS QUAD   -  EARLEVILLE (2016)
 JU3585
 JU3585                         *CURRENT SURVEY CONTROL
 JU3585  ______________________________________________________________________
 JU3585* NAD 83(1991) POSITION- 39 29 08.34722(N) 075 54 31.97270(W)   ADJUSTED
 JU3585* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3585  ______________________________________________________________________
 JU3585  GEOID HEIGHT    -        -33.351 (meters)                     GEOID18
 JU3585  LAPLACE CORR    -         -0.89  (seconds)                    DEFLEC18
 JU3585  HORZ ORDER      -  THIRD
 JU3585
 JU3585.The horizontal coordinates were established by classical geodetic methods
 JU3585.and adjusted by the National Geodetic Survey in January 1992.
 JU3585
 JU3585.The orthometric height was scaled from a topographic map.
 JU3585
 JU3585.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3585.GEOID18 height accuracy estimate available here.
 JU3585
 JU3585.Click photographs - Photos may exist for this station.
 JU3585
 JU3585.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3585
 JU3585. The following values were computed from the NAD 83(1991) position.
 JU3585
 JU3585;                    North         East     Units Scale Factor Converg.
 JU3585;SPC MD       -   202,482.898   493,868.511   MT  1.00000643   +0 41 05.4
 JU3585;SPC MD       -   664,312.64  1,620,300.27   sFT  1.00000643   +0 41 05.4
 JU3585;UTM  18      - 4,371,066.387   421,838.582   MT  0.99967522   -0 34 40.7
 JU3585
 JU3585!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3585!SPC MD       -   1.00000527  x   1.00000643  =   1.00001170
 JU3585!UTM  18      -   1.00000527  x   0.99967522  =   0.99968049
 JU3585
 JU3585:                Primary Azimuth Mark                     Grid Az
 JU3585:SPC MD       -  PETE 1898                                230 12 53.3
 JU3585:UTM  18      -  PETE 1898                                231 28 39.4
 JU3585
 JU3585_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2183871066(NAD 83)
 JU3585
 JU3585|---------------------------------------------------------------------|
 JU3585| PID    Reference Object                     Distance      Geod. Az  |
 JU3585|                                                           dddmmss.s |
 JU3585| JU3584 PETE 1898                           APPROX. 2.0 KM 2305358.7 |
 JU3585|---------------------------------------------------------------------|
 JU3585
 JU3585                          SUPERSEDED SURVEY CONTROL
 JU3585
 JU3585  NAD 83(1986)-  39 29 08.33894(N)    075 54 31.97850(W) AD(       ) 3
 JU3585  NAD 27      -  39 29 07.94300(N)    075 54 33.19000(W) AD(       ) 3
 JU3585  USSD        -  39 29 08.32200(N)    075 54 33.02000(W) AD(       ) 3
 JU3585
 JU3585.Superseded values are not recommended for survey control.
 JU3585
 JU3585.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3585.See file dsdata.pdf to determine how the superseded data were derived.
 JU3585
 JU3585_MARKER: N = NAIL
 JU3585_SETTING: 0 = UNSPECIFIED SETTING
 JU3585_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3585
 JU3585  HISTORY     - Date     Condition        Report By
 JU3585  HISTORY     - 1898     MONUMENTED       CGS
 JU3585
 JU3585                          STATION DESCRIPTION
 JU3585
 JU3585'DESCRIBED BY COAST AND GEODETIC SURVEY 1898 (JBB)
 JU3585'ON N SIDE OF BOHEMIA RIVER, AT HIGH-WATER MARK, 400 METERS E OF A
 JU3585'LONG WHARF AND 7/8 MILE FROM MOUTH OF RIVER.  STATION MARKED BY A
 JU3585'BOX 3 BY 3 INCHES AND 3 FEET DEEP FILLED WITH CEMENT, A NAIL IN
 JU3585'TOP MARKING CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5008 ***********************************************************************
 HV5008  DESIGNATION -  HEAD
 HV5008  PID         -  HV5008
 HV5008  STATE/COUNTY-  MD/CHARLES
 HV5008  COUNTRY     -  US
 HV5008  USGS QUAD   -  INDIAN HEAD (2016)
 HV5008
 HV5008                         *CURRENT SURVEY CONTROL
 HV5008  ______________________________________________________________________
 HV5008* NAD 83(1993) POSITION- 38 36 01.19380(N) 077 11 00.02632(W)   ADJUSTED
 HV5008* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5008  ______________________________________________________________________
 HV5008  GEOID HEIGHT    -        -32.501 (meters)                     GEOID18
 HV5008  LAPLACE CORR    -         -1.94  (seconds)                    DEFLEC18
 HV5008  HORZ ORDER      -  THIRD
 HV5008
 HV5008.The horizontal coordinates were established by classical geodetic methods
 HV5008.and adjusted by the National Geodetic Survey in November 1994.
 HV5008
 HV5008.The orthometric height was scaled from a topographic map.
 HV5008
 HV5008.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5008.GEOID18 height accuracy estimate available here.
 HV5008
 HV5008.Click photographs - Photos may exist for this station.
 HV5008
 HV5008.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5008
 HV5008. The following values were computed from the NAD 83(1993) position.
 HV5008
 HV5008;                    North         East     Units Scale Factor Converg.
 HV5008;SPC MD       -   103,656.486   384,029.527   MT  0.99996134   -0 06 54.3
 HV5008;SPC MD       -   340,079.65  1,259,936.87   sFT  0.99996134   -0 06 54.3
 HV5008;SPC VA N     - 2,104,457.789 3,614,686.489   MT  0.99994843   +0 49 18.3
 HV5008;SPC VA N     - 6,904,375.26 11,859,183.92   sFT  0.99994843   +0 49 18.3
 HV5008;UTM  18      - 4,274,687.148   309,871.425   MT  1.00004518   -1 21 45.2
 HV5008
 HV5008!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5008!SPC MD       -   1.00000483  x   0.99996134  =   0.99996617
 HV5008!SPC VA N     -   1.00000483  x   0.99994843  =   0.99995326
 HV5008!UTM  18      -   1.00000483  x   1.00004518  =   1.00005001
 HV5008
 HV5008:                Primary Azimuth Mark                     Grid Az
 HV5008:SPC MD       -  COIN                                     214 27 17.8
 HV5008:SPC VA N     -  COIN                                     213 31 05.2
 HV5008:UTM  18      -  COIN                                     215 42 08.7
 HV5008
 HV5008_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH0987174687(NAD 83)
 HV5008
 HV5008|---------------------------------------------------------------------|
 HV5008| PID    Reference Object                     Distance      Geod. Az  |
 HV5008|                                                           dddmmss.s |
 HV5008| DC6333 HEAD RM                              11.210 METERS 10440     |
 HV5008| HV5010 COIN                                APPROX. 3.6 KM 2142023.5 |
 HV5008|---------------------------------------------------------------------|
 HV5008
 HV5008                          SUPERSEDED SURVEY CONTROL
 HV5008
 HV5008  NAD 83(1991)-  38 36 01.19133(N)    077 11 00.03125(W) AD(       ) 3
 HV5008  NAD 83(1986)-  38 36 01.19325(N)    077 11 00.03788(W) AD(       ) 3
 HV5008  NAD 27      -  38 36 00.77100(N)    077 11 01.11600(W) AD(       ) 3
 HV5008
 HV5008.Superseded values are not recommended for survey control.
 HV5008
 HV5008.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5008.See file dsdata.pdf to determine how the superseded data were derived.
 HV5008
 HV5008_MARKER: DS = TRIANGULATION STATION DISK
 HV5008_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV5008_SP_SET: SHORE WALL FLOOR
 HV5008_STAMPING: HEAD 1928
 HV5008_MARK LOGO: CGS
 HV5008_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5008
 HV5008  HISTORY     - Date     Condition        Report By
 HV5008  HISTORY     - 1928     MONUMENTED       CGS
 HV5008  HISTORY     - 1928     GOOD             CGS
 HV5008  HISTORY     - 1938     GOOD             CGS
 HV5008  HISTORY     - 1972     MARK NOT FOUND   NGS
 HV5008
 HV5008                          STATION DESCRIPTION
 HV5008
 HV5008'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV5008'STATION IS ON THE E SHORE OF THE POTOMAC RIVER ACROSS THE RIVER
 HV5008'FROM HIGH POINT ON THE UNITED STATES NAVAL PROVING GROUNDS
 HV5008'DOCK.  AT THE SHORE END OF THE DOCK, A STANDARD DISK STATION MARK
 HV5008'IS SET IN A DRILL HOLE IN THE CONCRETE FLOOR OF THE SHORE WALL OF
 HV5008'THE DOCK AND FLUSH WITH THE SURFACE OF THE CONCRETE.  STAMPED
 HV5008'HEAD 1928.
 HV5008'
 HV5008'REFERENCE MARK, A STANDARD BRONZE DISK SET IN CONCRETE AS
 HV5008'IS SET NE OF STATION IN THE CORNER OF THE
 HV5008'LOT AND STAMPED HEAD 1928.
 HV5008'
 HV5008'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV5008
 HV5008                          STATION RECOVERY (1928)
 HV5008
 HV5008'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1928 (PCD)
 HV5008'STATION IS ON THE DOCK AT INDIAN HEAD PROVING GROUNDS, NEAR LOCATION
 HV5008'OF BOMBPROOF.  STATION WAS NOT OCCUPIED.
 HV5008
 HV5008                          STATION RECOVERY (1938)
 HV5008
 HV5008'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV5008'STATION MARK RECOVERED.  REFERENCE MARK NOT SEARCHED FOR.
 HV5008
 HV5008                          STATION RECOVERY (1972)
 HV5008
 HV5008'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 (RDO)
 HV5008'THE STATION IS GONE.  THE SURFACE OF THE DOCK HAS BEEN REMOVED AND
 HV5008'ONLY THE CONCRETE SEAWALL REMAINS AS SHOWN IN THE RECOVERY NOTE
 HV5008'OF 1938.  REFERENCE MARKS NOT SEARCHED FOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6450 ***********************************************************************
 HV6450  DESIGNATION -  HEAD 1907
 HV6450  PID         -  HV6450
 HV6450  STATE/COUNTY-  MD/DORCHESTER
 HV6450  COUNTRY     -  US
 HV6450  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6450
 HV6450                         *CURRENT SURVEY CONTROL
 HV6450  ______________________________________________________________________
 HV6450* NAD 83(1991) POSITION- 38 13 20.03466(N) 076 01 55.35676(W)   ADJUSTED
 HV6450* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6450  ______________________________________________________________________
 HV6450  GEOID HEIGHT    -        -35.598 (meters)                     GEOID18
 HV6450  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 HV6450  HORZ ORDER      -  THIRD
 HV6450
 HV6450.The horizontal coordinates were established by classical geodetic methods
 HV6450.and adjusted by the National Geodetic Survey in January 1992.
 HV6450
 HV6450.The orthometric height was scaled from a topographic map.
 HV6450
 HV6450.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6450.GEOID18 height accuracy estimate available here.
 HV6450
 HV6450.Click photographs - Photos may exist for this station.
 HV6450
 HV6450.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6450
 HV6450. The following values were computed from the NAD 83(1991) position.
 HV6450
 HV6450;                    North         East     Units Scale Factor Converg.
 HV6450;SPC MD       -    62,119.791   484,760.431   MT  1.00001444   +0 36 27.1
 HV6450;SPC MD       -   203,804.68  1,590,418.18   sFT  1.00001444   +0 36 27.1
 HV6450;UTM  18      - 4,230,975.993   409,662.298   MT  0.99970051   -0 38 18.9
 HV6450
 HV6450!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6450!SPC MD       -   1.00000562  x   1.00001444  =   1.00002006
 HV6450!UTM  18      -   1.00000562  x   0.99970051  =   0.99970613
 HV6450
 HV6450:                Primary Azimuth Mark                     Grid Az
 HV6450:SPC MD       -  CRAB 1907                                168 46 16.4
 HV6450:UTM  18      -  CRAB 1907                                170 01 02.4
 HV6450
 HV6450_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0966230975(NAD 83)
 HV6450
 HV6450|---------------------------------------------------------------------|
 HV6450| PID    Reference Object                     Distance      Geod. Az  |
 HV6450|                                                           dddmmss.s |
 HV6450| HV6464 CRAB 1907                           APPROX. 5.3 KM 1692243.5 |
 HV6450| HV6451 HEAD 2                               13.418 METERS 25915     |
 HV6450|---------------------------------------------------------------------|
 HV6450
 HV6450                          SUPERSEDED SURVEY CONTROL
 HV6450
 HV6450  NAD 83(1986)-  38 13 20.03456(N)    076 01 55.37606(W) AD(       ) 3
 HV6450  NAD 27      -  38 13 19.59200(N)    076 01 56.60100(W) AD(       ) 3
 HV6450  USSD        -  38 13 19.97500(N)    076 01 56.36200(W) AD(       ) 3
 HV6450
 HV6450.Superseded values are not recommended for survey control.
 HV6450
 HV6450.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6450.See file dsdata.pdf to determine how the superseded data were derived.
 HV6450
 HV6450_MARKER: N = NAIL
 HV6450_SETTING: 0 = UNSPECIFIED SETTING
 HV6450_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6450
 HV6450  HISTORY     - Date     Condition        Report By
 HV6450  HISTORY     - 1907     MONUMENTED       MDSFC
 HV6450  HISTORY     - 1932     SEE DESCRIPTION  CGS
 HV6450
 HV6450                          STATION DESCRIPTION
 HV6450
 HV6450'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HV6450'STATION IN THE UPPER END OF TANGIER SOUND, ON THE EASTERN SIDE OF
 HV6450'THE SOUTHERN PART OF PENINSULA KNOWN AS BISHOP HEAD, SITUATED
 HV6450'BETWEEN HOOPER STRAIT AND FISHING BAY.  STATION IS ON MARSH BEHIND
 HV6450'WATER BUSHES WHICH SKIRT THE SHORE, ABOUT 15 YARDS SW OF SHORE AND
 HV6450'1/2 MILE N OF EXTREME S END OF BISHOP HEAD.  STATION MARK IS NAIL
 HV6450'IN PINE STUB FLUSH WITH THE GROUND.  REFERENCE MARK IS MARKED BY A
 HV6450'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6450'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV6450'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV6450'U.S.C.S ARE COUNTER-SUNK IN TOP OF POST.  IT IS 13.41 METERS
 HV6450'(44.0 FEET) FROM THE STATION, S 79 DEG 15 MIN W.  OTHER
 HV6450'DISTANCES AND BEARINGS ARE AS FOLLOWS--LARGE PINE TREE, 2 MILES S 37
 HV6450'DEG 01 MIN W.  NEAR GABLE OF 2 1/2-STORY HOUSE, 1/4 MILE, S 79 DEG 43
 HV6450'MIN W.  CHIMNEY OF HOUSE, 1/8 MILE, N 83 DEG 57 MIN W.  CHIMNEY OF
 HV6450'HOUSE, 1-1/2 MILES, N 32 DEG 13 MIN W.  CHIMNEY ON END OF HOUSE, 3
 HV6450'MILES, N 01 DEG 48 MIN W.
 HV6450
 HV6450                          STATION RECOVERY (1932)
 HV6450
 HV6450'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HV6450'STATION ENTIRELY LOST.  IN 1932 A NEW STATION HEAD 2 WAS ESTABLISHED
 HV6450'AND PARTIES OF ABOUT 6 MEN THOROUGHLY SEARCHED FOR CENTER AND
 HV6450'REFERENCE MARK, NO TRACE OF WHICH COULD BE FOUND.  HEAD 2 WAS
 HV6450'ESTABLISHED OVER THE REFERENCE MARK FOR HEAD 1907.  THE MARK IS
 HV6450'THE STANDARD M.S.F. SURVEY MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6451 ***********************************************************************
 HV6451  DESIGNATION -  HEAD 2
 HV6451  PID         -  HV6451
 HV6451  STATE/COUNTY-  MD/DORCHESTER
 HV6451  COUNTRY     -  US
 HV6451  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6451
 HV6451                         *CURRENT SURVEY CONTROL
 HV6451  ______________________________________________________________________
 HV6451* NAD 83(1991) POSITION- 38 13 19.95348(N) 076 01 55.89871(W)   ADJUSTED
 HV6451* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6451  ______________________________________________________________________
 HV6451  GEOID HEIGHT    -        -35.598 (meters)                     GEOID18
 HV6451  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 HV6451  HORZ ORDER      -  SECOND
 HV6451
 HV6451.The horizontal coordinates were established by classical geodetic methods
 HV6451.and adjusted by the National Geodetic Survey in January 1992.
 HV6451
 HV6451.The orthometric height was scaled from a topographic map.
 HV6451
 HV6451.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6451.GEOID18 height accuracy estimate available here.
 HV6451
 HV6451.Click photographs - Photos may exist for this station.
 HV6451
 HV6451.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6451
 HV6451. The following values were computed from the NAD 83(1991) position.
 HV6451
 HV6451;                    North         East     Units Scale Factor Converg.
 HV6451;SPC MD       -    62,117.149   484,747.276   MT  1.00001444   +0 36 26.7
 HV6451;SPC MD       -   203,796.01  1,590,375.02   sFT  1.00001444   +0 36 26.7
 HV6451;UTM  18      - 4,230,973.637   409,649.093   MT  0.99970053   -0 38 19.2
 HV6451
 HV6451!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6451!SPC MD       -   1.00000562  x   1.00001444  =   1.00002006
 HV6451!UTM  18      -   1.00000562  x   0.99970053  =   0.99970615
 HV6451
 HV6451:                Primary Azimuth Mark                     Grid Az
 HV6451:SPC MD       -  APPLEGARTH                               276 13 41.2
 HV6451:UTM  18      -  APPLEGARTH                               277 28 27.1
 HV6451
 HV6451_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0964930973(NAD 83)
 HV6451
 HV6451|---------------------------------------------------------------------|
 HV6451| PID    Reference Object                     Distance      Geod. Az  |
 HV6451|                                                           dddmmss.s |
 HV6451| HV6410 FISHING POINT SHOAL BUOY 4          APPROX. 8.8 KM 0043332.8 |
 HV6451| HV6414 ROASTING EAR POINT BEACON           APPROX. 6.7 KM 0125627.5 |
 HV6451| HU1889 CLAY ISLAND SHOAL BEACON            APPROX. 7.7 KM 0922727.6 |
 HV6451| HV6452 BISHOP HEAD SHOAL BELL BUOY 1       APPROX. 2.0 KM 1710831.4 |
 HV6451| CX2861 HEAD 2 RM 1                          35.298 METERS 18754     |
 HV6451| CX2862 HEAD 2 RM 2                          36.396 METERS 26312     |
 HV6451| HV6505 APPLEGARTH                          APPROX. 9.5 KM 2765007.9 |
 HV6451| HV6422 HOOPERSVILLE ME CHURCH CUPOLA       APPROX.13.6 KM 2880442.3 |
 HV6451|---------------------------------------------------------------------|
 HV6451
 HV6451                          SUPERSEDED SURVEY CONTROL
 HV6451
 HV6451  NAD 83(1986)-  38 13 19.95337(N)    076 01 55.91805(W) AD(       ) 2
 HV6451  NAD 27      -  38 13 19.50700(N)    076 01 57.14900(W) AD(       ) 2
 HV6451
 HV6451.Superseded values are not recommended for survey control.
 HV6451
 HV6451.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6451.See file dsdata.pdf to determine how the superseded data were derived.
 HV6451
 HV6451_MARKER: H = DRILL HOLE
 HV6451_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6451
 HV6451  HISTORY     - Date     Condition        Report By
 HV6451  HISTORY     - 1932     MONUMENTED       CGS
 HV6451  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6451  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6451  HISTORY     - 1965     GOOD             LOCENG
 HV6451  HISTORY     - 20140330 MARK NOT FOUND   ARCSHE
 HV6451
 HV6451                          STATION DESCRIPTION
 HV6451
 HV6451'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HV6451'STATION IS IN UPPER END OF TANGIER SOUND, ON EASTERN SIDE OF
 HV6451'SOUTHERN PART OF BISHOP HEAD PENINSULA, SITUATED BETWEEN HOOPER
 HV6451'STRAIT AND FISHING BAY, IN MARSH BEHIND WATER BUSHES WHICH SKIRT
 HV6451'THE SHORE.  CENTER IS 23 METERS S OF EDGE OF MARSH.  9 METERS W
 HV6451'OF EDGE OF MARSH AND ABOUT 1/2 MILE N OF THE EXTREME END OF
 HV6451'BISHOP HEAD.  REFERENCE MARKS ARE STAMPED HEAD 2 1931 AND
 HV6451'NUMBERED.  REFERENCE MARKS ARE SET INSIDE THE FRINGE OF
 HV6451'WATER BUSHES.  CENTER MARK IS CENTER OF STANDARD M.S.F.S.
 HV6451'MONUMENT, WHICH WAS REFERENCE MARK FOR HEAD 1907.
 HV6451'
 HV6451'STATION MARK IS MARKED BY A HOLE IN CENTER OF TOP OF MARYLAND
 HV6451'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE POST 2 FEET
 HV6451'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  LETTERS M.S.F.C. AND
 HV6451'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6451'
 HV6451'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE, AS
 HV6451'DESCRIBED IN NOTE 11A.
 HV6451'
 HV6451'HEIGHT OF SIGNAL ABOVE STATION MARK - 20 METERS.
 HV6451
 HV6451                          STATION RECOVERY (1942)
 HV6451
 HV6451'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6451'THIS STATION AND REFERENCE MARK NO.1 WERE THROUGHLY SEARCHED FOR
 HV6451'BY THREE MEN FOR 1-1/2 HOURS BUT NO TRACE OF THEM COULD BE FOUND.
 HV6451'
 HV6451'REFERENCE MARK NO.2 IS LOCATED ON THE UPPER END OF TANGIER SOUND,
 HV6451'ON THE EASTERN SIDE OF THE SOUTHERN PART OF BISHOP HEAD PENINSULA,
 HV6451'ON MARSHLAND ABOUT 1/2 MILE N OF THE EXTREME SOUTHERN END OF THE
 HV6451'PENINSULA AND ABOUT 45 FEET W OF THE SHORE, AND ABOUT 1500 FEET
 HV6451'E OF THE ONLY ROAD LEADING TO THE SOUTHERN END OF BISHOP HEAD.
 HV6451'
 HV6451'THE MARK IS A BRONZE DISK, STAMPED HEAD 2 R.M. NO.2, 1932, SET
 HV6451'IN THE TOP OF AN 11-INCH SQUARE CONCRETE MONUMENT, EXTENDING
 HV6451'ABOUT 3 INCHES ABOVE THE SURFACE OF THE GROUND.  THE MARK IS IN
 HV6451'GOOD CONDITION.
 HV6451'
 HV6451'THIS MARK IS BEING CLASSED AS AN H AND T STATION, BECAUSE THE
 HV6451'TRIANGULATION STATION FOR WHICH IT WAS A REFERENCE MARK IS LOST.
 HV6451
 HV6451                          STATION RECOVERY (1961)
 HV6451
 HV6451'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6451'THE RM WAS RECOVERED IN GOOD CONDITION.  THE 1942 RECOVERY NOTE
 HV6451'IS ADEQUATE AND COMPLETE WITH THE EXCEPTION THAT THE STATION IS
 HV6451'NOW ONLY 12 FT. SOUTHWEST OF THE SHORE.
 HV6451
 HV6451                          STATION RECOVERY (1965)
 HV6451
 HV6451'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1965
 HV6451'RECOVERED BY MDDCBA.
 HV6451'
 HV6451'RM 2 WAS RECOVERED IN GOOD CONDITION.
 HV6451'
 HV6451'STATION IS NOW ONLY 2 FT. SOUTH OF HIGH WATER, WITH BANK WASHING
 HV6451'BADLY.
 HV6451'
 HV6451'STATION WILL POSSIBLY LAST TWO YEARS BEFORE BEING WASHED OVER BANK.
 HV6451
 HV6451                          STATION RECOVERY (2014)
 HV6451
 HV6451'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 HV6451'THE STATION NOW PLOTS WELL OFFSHORE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6061 ***********************************************************************
 HV6061  DESIGNATION -  HEALEY
 HV6061  PID         -  HV6061
 HV6061  STATE/COUNTY-  MD/TALBOT
 HV6061  COUNTRY     -  US
 HV6061  USGS QUAD   -  OXFORD (2016)
 HV6061
 HV6061                         *CURRENT SURVEY CONTROL
 HV6061  ______________________________________________________________________
 HV6061* NAD 83(1991) POSITION- 38 40 16.57771(N) 076 07 36.01252(W)   ADJUSTED
 HV6061* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6061  ______________________________________________________________________
 HV6061  GEOID HEIGHT    -        -34.760 (meters)                     GEOID18
 HV6061  LAPLACE CORR    -         -3.60  (seconds)                    DEFLEC18
 HV6061  HORZ ORDER      -  THIRD
 HV6061
 HV6061.The horizontal coordinates were established by classical geodetic methods
 HV6061.and adjusted by the National Geodetic Survey in January 1992.
 HV6061
 HV6061.The orthometric height was scaled from a topographic map.
 HV6061
 HV6061.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6061.GEOID18 height accuracy estimate available here.
 HV6061
 HV6061.Click photographs - Photos may exist for this station.
 HV6061
 HV6061.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6061
 HV6061. The following values were computed from the NAD 83(1991) position.
 HV6061
 HV6061;                    North         East     Units Scale Factor Converg.
 HV6061;SPC MD       -   111,878.593   475,997.748   MT  0.99995619   +0 32 53.3
 HV6061;SPC MD       -   367,055.02  1,561,669.28   sFT  0.99995619   +0 32 53.3
 HV6061;UTM  18      - 4,280,900.452   401,988.439   MT  0.99971829   -0 42 14.6
 HV6061
 HV6061!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6061!SPC MD       -   1.00000533  x   0.99995619  =   0.99996152
 HV6061!UTM  18      -   1.00000533  x   0.99971829  =   0.99972362
 HV6061
 HV6061:                Primary Azimuth Mark                     Grid Az
 HV6061:SPC MD       -  MASLIN                                   233 13 39.5
 HV6061:UTM  18      -  MASLIN                                   234 28 47.4
 HV6061
 HV6061_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0198880900(NAD 83)
 HV6061
 HV6061|---------------------------------------------------------------------|
 HV6061| PID    Reference Object                     Distance      Geod. Az  |
 HV6061|                                                           dddmmss.s |
 HV6061| HV5840 POTATO                              APPROX. 0.5 KM 0332227.8 |
 HV6061| HV5844 POCO                                398.955 METERS 07426     |
 HV6061| HV5992 MASLIN                              APPROX. 0.5 KM 2334632.8 |
 HV6061| HV6062 CHARLES                             368.149 METERS 33541     |
 HV6061|---------------------------------------------------------------------|
 HV6061
 HV6061                          SUPERSEDED SURVEY CONTROL
 HV6061
 HV6061  NAD 83(1986)-  38 40 16.57427(N)    076 07 36.02863(W) AD(       ) 3
 HV6061  NAD 27      -  38 40 16.14100(N)    076 07 37.24500(W) AD(       ) 3
 HV6061  USSD        -  38 40 16.53500(N)    076 07 37.05400(W) AD(       ) 3
 HV6061
 HV6061.Superseded values are not recommended for survey control.
 HV6061
 HV6061.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6061.See file dsdata.pdf to determine how the superseded data were derived.
 HV6061
 HV6061_MARKER: H = DRILL HOLE
 HV6061_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV6061_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6061
 HV6061  HISTORY     - Date     Condition        Report By
 HV6061  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6061  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV6061
 HV6061                          STATION DESCRIPTION
 HV6061
 HV6061'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6061'ON THE SOUTHERN SHORE OF ISLAND CREEK, AT W SIDE OF ENTRANCE TO A
 HV6061'COVE, ABOUT 1-7/8 MILES FROM CHOPTANK RIVER, IN A CULTIVATED
 HV6061'FIELD, ABOUT 10 FEET ABOVE HIGH WATER, 11 YARDS WSW OF BANK
 HV6061'FRINGED WITH TREES, AND 150 YARDS S OF A POINT.  STATION IS
 HV6061'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV6061'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6061'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV6061'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS
 HV6061'THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2
 HV6061'INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV6061'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NEAR PEAK OF BARN, 1/2
 HV6061'MILE, S 11 DEG 27 MIN W.  RIGHT SIDE OF RIGHT CHIMNEY OF HOUSE,
 HV6061'3/8 MILE, S 49 DEG 53 MIN W.  LEFT PEAK OF LARGE BARN, 3/4 MILE,
 HV6061'N 56 DEG 41 MIN W.  NAIL IN BLAZE IN 3-INCH OAK TREE, 15.68 METERS
 HV6061'(51.4 FEET), N 0 DEG 27 MIN E.  PEAK OF HOUSE AT CHIMNEY, 1/2
 HV6061'MILE, N 33 DEG 24 MIN E.  NAIL IN BLAZE IN 5-INCH WILD CHERRY
 HV6061'TREE, 9.89 METERS (32.45 FEET), N 48 DEG 14 MIN E.  NAIL IN BLAZE
 HV6061'IN 5-INCH WILD CHERRY TREE, 19.37 METERS (63.5 FEET), S 74 DEG 57
 HV6061'MIN E.
 HV6061
 HV6061                          STATION RECOVERY (1940)
 HV6061
 HV6061'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6061'STATION VISITED BUT NOT RECOVERED.  IT WAS ON NE SIDE OF POINT IN
 HV6061'CULTIVATED CORN FIELD ABOUT 50 FEET FROM EDGE.  MONUMENT HAS BEEN
 HV6061'PLOWED OUT AND IDENTITY OF REFERENCE TREES IS UNCERTAIN.  NOT
 HV6061'FAVORABLE FOR DIGGING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6799 ***********************************************************************
 HV6799  DESIGNATION -  HEALEY MSFC 1908
 HV6799  PID         -  HV6799
 HV6799  STATE/COUNTY-  MD/ST MARYS
 HV6799  COUNTRY     -  US
 HV6799  USGS QUAD   -  LEONARDTOWN (2016)
 HV6799
 HV6799                         *CURRENT SURVEY CONTROL
 HV6799  ______________________________________________________________________
 HV6799* NAD 83(1993) POSITION- 38 16 06.44940(N) 076 38 45.07082(W)   ADJUSTED
 HV6799* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6799  ______________________________________________________________________
 HV6799  GEOID HEIGHT    -        -33.888 (meters)                     GEOID18
 HV6799  LAPLACE CORR    -         -4.98  (seconds)                    DEFLEC18
 HV6799  HORZ ORDER      -  THIRD
 HV6799
 HV6799.The horizontal coordinates were established by classical geodetic methods
 HV6799.and adjusted by the National Geodetic Survey in November 1994.
 HV6799
 HV6799.The orthometric height was scaled from a topographic map.
 HV6799
 HV6799.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6799.GEOID18 height accuracy estimate available here.
 HV6799
 HV6799.Click photographs - Photos may exist for this station.
 HV6799
 HV6799.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6799
 HV6799. The following values were computed from the NAD 83(1993) position.
 HV6799
 HV6799;                    North         East     Units Scale Factor Converg.
 HV6799;SPC MD       -    66,861.758   430,991.963   MT  1.00000564   +0 13 20.2
 HV6799;SPC MD       -   219,362.28  1,414,012.80   sFT  1.00000564   +0 13 20.2
 HV6799;SPC VA N     - 2,068,435.956 3,662,242.413   MT  0.99996683   +1 09 25.9
 HV6799;SPC VA N     - 6,786,193.63 12,015,206.98   sFT  0.99996683   +1 09 25.9
 HV6799;UTM  18      - 4,236,882.652   356,022.207   MT  0.99985530   -1 01 10.3
 HV6799
 HV6799!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6799!SPC MD       -   1.00000536  x   1.00000564  =   1.00001100
 HV6799!SPC VA N     -   1.00000536  x   0.99996683  =   0.99997219
 HV6799!UTM  18      -   1.00000536  x   0.99985530  =   0.99986066
 HV6799
 HV6799:                Primary Azimuth Mark                     Grid Az
 HV6799:SPC MD       -  BEAU MSFC 1908                           120 35 27.0
 HV6799:SPC VA N     -  BEAU MSFC 1908                           119 39 21.3
 HV6799:UTM  18      -  BEAU MSFC 1908                           121 49 57.5
 HV6799
 HV6799_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5602236882(NAD 83)
 HV6799
 HV6799|---------------------------------------------------------------------|
 HV6799| PID    Reference Object                     Distance      Geod. Az  |
 HV6799|                                                           dddmmss.s |
 HV6799| HV6812 BELLE MSFC 1908                     232.476 METERS 07018     |
 HV6799| HV6805 BEAU MSFC 1908                      APPROX. 0.6 KM 1204847.2 |
 HV6799|---------------------------------------------------------------------|
 HV6799
 HV6799                          SUPERSEDED SURVEY CONTROL
 HV6799
 HV6799  NAD 83(1991)-  38 16 06.44848(N)    076 38 45.07561(W) AD(       ) 3
 HV6799  NAD 83(1986)-  38 16 06.44927(N)    076 38 45.08732(W) AD(       ) 3
 HV6799  NAD 27      -  38 16 05.97500(N)    076 38 46.20600(W) AD(       ) 3
 HV6799  USSD        -  38 16 06.58300(N)    076 38 47.08800(W) AD(       ) 3
 HV6799
 HV6799.Superseded values are not recommended for survey control.
 HV6799
 HV6799.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6799.See file dsdata.pdf to determine how the superseded data were derived.
 HV6799
 HV6799_MARKER: H = DRILL HOLE
 HV6799_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6799_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6799+STABILITY: SURFACE MOTION
 HV6799
 HV6799  HISTORY     - Date     Condition        Report By
 HV6799  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6799  HISTORY     - 1958     SEE DESCRIPTION  CGS
 HV6799
 HV6799                          STATION DESCRIPTION
 HV6799
 HV6799'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6799'STATION IS ON THE NORTHWESTERN SHORE OF BRETONS BAY, ON POINT
 HV6799'OPPOSITE ABELLS WHARF, AND ABOUT 3/8 MILE NNE OF LOVERS POINT,
 HV6799'ABOUT 12 FEET ABOVE HIGH WATER, 6 YARDS E OF EDGE OF BANK, 6 YARDS
 HV6799'N OF EDGE OF BANK, 35 YARDS W OF POINT WHERE RAIL FENCE AND WATER
 HV6799'MEET, 65 YARDS SW OF CORNER OF FENCE, 200 YARDS SE OF CEDAR TREES,
 HV6799'AND 250 YARDS SSE OF PINE TREES.
 HV6799'
 HV6799'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6799'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6799'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6799'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6799'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6799'FOLLOWS--CHIMNEY OF LARGE HOUSE NEAR WHARF, 1/2 MILE, S 7 DEG 37
 HV6799'MIN W.  NEAR CHIMNEY OF HOUSE, 1-7/8 MILES, S 31 DEG 39 MIN W.
 HV6799'NAIL IN BLAZE IN 4-INCH CEDAR TREE, 6.02 METERS (19.75 FEET), S 64
 HV6799'DEG 44 MIN W.  NAIL IN BLAZE IN 4-INCH TWISTED CEDAR TREE, 10.33
 HV6799'METERS (33.9 FEET), N 74 DEG 43 MIN W.  NAIL IN BLAZE IN 8-INCH
 HV6799'PERSIMMON TREE, 16.41 METERS (53.8 FEET), N 50 DEG 37 MIN W.
 HV6799'CHIMNEY OF HOUSE ON HILL, 400 YARDS, N 19 DEG 27 MIN E.  NEAR
 HV6799'CHIMNEY OF HOUSE ON KNOLL, 150 YARDS, N 54 DEG 1 MIN E.  LEFT
 HV6799'CHIMNEY OF HOUSE ON HILL, 2 MILES, N 89 DEG 6 MIN E.  CHIMNEY ON
 HV6799'RIGHT END OF HOUSE, 1/2 MILE, S 54 DEG 49 MIN E.  CHIMNEY OF
 HV6799'DOUBLE HOUSE, 1/2 MILE, S 25 DEG 24 MIN E.  WINDMILL, 5/8 MILE, S
 HV6799'7 DEG 4 MIN E.  WATER TANK, 5/8 MILE, S 5 DEG 51 MIN E.  RIGHT
 HV6799'CHIMNEY OF HOUSE, 5/8 MILE, S 5 DEG 28 MIN E.
 HV6799
 HV6799                          STATION RECOVERY (1958)
 HV6799
 HV6799'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WFD)
 HV6799'THE STATION IS DESTROYED.  THE MONUMENT WAS FOUND LYING ON THE BEACH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4294 ***********************************************************************
 JV4294  DESIGNATION -  HEALTH
 JV4294  PID         -  JV4294
 JV4294  STATE/COUNTY-  MD/MONTGOMERY
 JV4294  COUNTRY     -  US
 JV4294  USGS QUAD   -  KENSINGTON (2016)
 JV4294
 JV4294                         *CURRENT SURVEY CONTROL
 JV4294  ______________________________________________________________________
 JV4294* NAD 83(1993) POSITION- 39 00 05.21102(N) 077 06 15.47792(W)   ADJUSTED
 JV4294* NAVD 88 ORTHO HEIGHT -   102.    (meters)      335.    (feet) SCALED
 JV4294  ______________________________________________________________________
 JV4294  GEOID HEIGHT    -        -31.849 (meters)                     GEOID18
 JV4294  LAPLACE CORR    -         -3.08  (seconds)                    DEFLEC18
 JV4294  HORZ ORDER      -  SECOND
 JV4294
 JV4294.The horizontal coordinates were established by classical geodetic methods
 JV4294.and adjusted by the National Geodetic Survey in November 1994.
 JV4294
 JV4294.The orthometric height was scaled from a topographic map.
 JV4294
 JV4294.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4294.GEOID18 height accuracy estimate available here.
 JV4294
 JV4294.Click photographs - Photos may exist for this station.
 JV4294
 JV4294.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4294
 JV4294. The following values were computed from the NAD 83(1993) position.
 JV4294
 JV4294;                    North         East     Units Scale Factor Converg.
 JV4294;SPC MD       -   148,172.057   390,965.534   MT  0.99995224   -0 03 55.7
 JV4294;SPC MD       -   486,127.82  1,282,692.76   sFT  0.99995224   -0 03 55.7
 JV4294;UTM  18      - 4,319,043.633   317,780.127   MT  1.00000887   -1 19 28.9
 JV4294
 JV4294!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4294!SPC MD       -   0.99998903  x   0.99995224  =   0.99994127
 JV4294!UTM  18      -   0.99998903  x   1.00000887  =   0.99999790
 JV4294
 JV4294:                Primary Azimuth Mark                     Grid Az
 JV4294:SPC MD       -  MEDICAL CENTER                           087 11 31.7
 JV4294:UTM  18      -  MEDICAL CENTER                           088 27 04.9
 JV4294
 JV4294_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1778019043(NAD 83)
 JV4294
 JV4294|---------------------------------------------------------------------|
 JV4294| PID    Reference Object                     Distance      Geod. Az  |
 JV4294|                                                           dddmmss.s |
 JV4294| CJ9962 HEALTH RM 2                          19.562 METERS 03146     |
 JV4294| JV4314 MEDICAL CENTER                      APPROX. 0.9 KM 0870736.0 |
 JV4294| HV4105 BETHESDA RAD STA WJMD MAST          APPROX. 2.9 KM 1973606.9 |
 JV4294| HV4103 BETHESDA BRADLEY HILLS S SPIPE      APPROX. 2.5 KM 1984116.7 |
 JV4294| CJ9961 HEALTH RM 1                          15.367 METERS 26505     |
 JV4294|---------------------------------------------------------------------|
 JV4294
 JV4294                          SUPERSEDED SURVEY CONTROL
 JV4294
 JV4294  NAD 83(1991)-  39 00 05.21050(N)    077 06 15.47880(W) AD(       ) 2
 JV4294  NAD 83(1986)-  39 00 05.21033(N)    077 06 15.48842(W) AD(       ) 2
 JV4294  NAD 27      -  39 00 04.81548(N)    077 06 16.56133(W) AD(       ) 2
 JV4294
 JV4294.Superseded values are not recommended for survey control.
 JV4294
 JV4294.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4294.See file dsdata.pdf to determine how the superseded data were derived.
 JV4294
 JV4294_MARKER: DS = TRIANGULATION STATION DISK
 JV4294_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV4294_SP_SET: BUILDING ROOF
 JV4294_STAMPING: HEALTH 1952
 JV4294_MARK LOGO: CGS
 JV4294_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV4294
 JV4294  HISTORY     - Date     Condition        Report By
 JV4294  HISTORY     - 1952     MONUMENTED       CGS
 JV4294
 JV4294                          STATION DESCRIPTION
 JV4294
 JV4294'DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (IWS)
 JV4294'THE STATION IS A STANDARD DISK LOCATED NEAR THE SE CORNER ON THE
 JV4294'HIGHEST OF FIVE ROOFS OF THE NATIONAL INSTITUTE OF HEALTH BUILDING,
 JV4294'BETHESDA.  IT IS SITUATED ON THE TOP OF A DRAIN GUARD AND STAMPED
 JV4294'HEALTH 1952.
 JV4294'
 JV4294'R.M. 1 IS A STANDARD DISK LOCATED NEAR THE SW CORNER OF THE HIGHEST
 JV4294'OF FIVE ROOFS.  IT IS SITUATED ON THE TOP OF A DRAIN GUARD AND
 JV4294'STAMPED HEALTH NO 1 1952.
 JV4294'
 JV4294'R.M. 2 IS A STANDARD DISK ATTACHED TO THE TOP OF A DRAIN GUARD ON THE
 JV4294'SECOND HIGHEST ROOF.  IT IS APPROXIMATELY 10 FEET BELOW THE STATION
 JV4294'AND IS STAMPED HEALTH NO 2 1952.
 JV4294'
 JV4294'TO REACH THE STATION FROM THE INTERSECTION OF THE EAST-WEST HIGHWAY
 JV4294'AND WISCONSIN AVENUE IN BETHESDA, GO N ON ROUTE 240 (WISCONSIN
 JV4294'AVENUE EXTENDED) FOR 1.25 MILES TO A T-ROAD LEFT WHICH IS THE
 JV4294'ENTRANCE TO THE NATIONAL INSTITUTE OF HEALTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4463 ***********************************************************************
 JV4463  DESIGNATION -  HEAP
 JV4463  PID         -  JV4463
 JV4463  STATE/COUNTY-  MD/MONTGOMERY
 JV4463  COUNTRY     -  US
 JV4463  USGS QUAD   -  GERMANTOWN (2016)
 JV4463
 JV4463                         *CURRENT SURVEY CONTROL
 JV4463  ______________________________________________________________________
 JV4463* NAD 83(1991) POSITION- 39 11 40.44226(N) 077 22 24.02615(W)   ADJUSTED
 JV4463* NAVD 88 ORTHO HEIGHT -   173.3   (meters)      569.    (feet) VERTCON3
 JV4463  ______________________________________________________________________
 JV4463  GEOID HEIGHT    -        -32.077 (meters)                     GEOID18
 JV4463  LAPLACE CORR    -          5.02  (seconds)                    DEFLEC18
 JV4463  HORZ ORDER      -  FIRST
 JV4463
 JV4463.The horizontal coordinates were established by classical geodetic methods
 JV4463.and adjusted by the National Geodetic Survey in January 1992.
 JV4463
 JV4463.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4463.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4463
 JV4463.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4463.GEOID18 height accuracy estimate available here.
 JV4463
 JV4463.Click photographs - Photos may exist for this station.
 JV4463
 JV4463.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4463
 JV4463. The following values were computed from the NAD 83(1991) position.
 JV4463
 JV4463;                    North         East     Units Scale Factor Converg.
 JV4463;SPC MD       -   169,671.588   367,748.818   MT  0.99996529   -0 14 03.6
 JV4463;SPC MD       -   556,664.20  1,206,522.58   sFT  0.99996529   -0 14 03.6
 JV4463;UTM  18      - 4,341,051.778   295,040.384   MT  1.00011727   -1 30 01.3
 JV4463
 JV4463!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4463!SPC MD       -   0.99997784  x   0.99996529  =   0.99994313
 JV4463!UTM  18      -   0.99997784  x   1.00011727  =   1.00009511
 JV4463
 JV4463:                Primary Azimuth Mark                     Grid Az
 JV4463:SPC MD       -  HEAP AZ MK                               320 27 16.2
 JV4463:UTM  18      -  HEAP AZ MK                               321 43 13.9
 JV4463
 JV4463_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9504041051(NAD 83)
 JV4463
 JV4463|---------------------------------------------------------------------|
 JV4463| PID    Reference Object                     Distance      Geod. Az  |
 JV4463|                                                           dddmmss.s |
 JV4463| CJ9964 HEAP RM 1                            22.485 METERS 07804     |
 JV4463| CJ9965 HEAP RM 2                            26.680 METERS 21010     |
 JV4463| CJ9963 HEAP AZ MK                                         3201312.6 |
 JV4463|---------------------------------------------------------------------|
 JV4463
 JV4463                          SUPERSEDED SURVEY CONTROL
 JV4463
 JV4463  NAD 83(1986)-  39 11 40.44197(N)    077 22 24.03661(W) AD(       ) 1
 JV4463  NAD 27      -  39 11 40.06001(N)    077 22 25.07813(W) AD(       ) 1
 JV4463  NGVD 29 (07/19/86)  173.5    (m)          569.     (f) VERT ANG       
 JV4463
 JV4463.Superseded values are not recommended for survey control.
 JV4463
 JV4463.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4463.See file dsdata.pdf to determine how the superseded data were derived.
 JV4463
 JV4463_MARKER: DS = TRIANGULATION STATION DISK
 JV4463_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4463_STAMPING: HEAP 1943
 JV4463_MARK LOGO: CGS
 JV4463_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4463+STABILITY: SURFACE MOTION
 JV4463
 JV4463  HISTORY     - Date     Condition        Report By
 JV4463  HISTORY     - 1943     MONUMENTED       CGS
 JV4463  HISTORY     - 1957     GOOD             LOCENG
 JV4463  HISTORY     - 1969     GOOD             CGS
 JV4463
 JV4463                          STATION DESCRIPTION
 JV4463
 JV4463'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4463'THE STATION IS LOCATED ABOUT 1.75 MILES BY ROAD SE OF
 JV4463'BARNESVILLE IN A BRUSHCOVERED AREA AND ON LAND OWNED BY EARL
 JV4463'HEAP.  IT IS 0.05 MILE E OF A GRAVEL FARM ROAD, 100 FEET N OF A
 JV4463'WOODS ROAD, STAMPED HEAP 1943 AND PROJECTS 6 INCHES.
 JV4463'
 JV4463'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE DISKS
 JV4463'SET IN CONCRETE, AS DESCRIBED.
 JV4463'
 JV4463'REFERENCE MARK NO.1 IS ENE OF THE STATION, STAMPED HEAP NO.1 1943
 JV4463'AND PROJECTS 6 INCHES.
 JV4463'
 JV4463'REFERENCE MARK NO.2 IS SSW OF THE STATION, STAMPED HEAP NO.2 1943
 JV4463'AND PROJECTS 6 INCHES.
 JV4463'
 JV4463'THE AZIMUTH MARK IS ABOUT 1.0 MILE NW OF THE STATION AND 0.3 MILE S
 JV4463'ALONG STATE HIGHWAY 109 FROM THE RAILROAD UNDERPASS AT THE
 JV4463'BARNESVILLE RAILROAD STATION.  IT IS IN A FENCE LINE, 14 FEET E OF
 JV4463'THE CENTER OF STATE HIGHWAY 109, 77 FEET S OF A GRAVEL ROAD E AND
 JV4463'4 FEET S OF TELEPHONE POLE NO.163-I22.  IT IS STAMPED HEAP 1943
 JV4463'AND PROJECTS 6 INCHES.
 JV4463'
 JV4463'TO REACH THE STATION FROM THE RAILROAD UNDERPASS ON STATE HIGHWAY 109
 JV4463'AT THE BARNESVILLE RAILROAD STATION GO E ON A MACADAM ROAD FOR 0.65
 JV4463'MILE TO WHERE IT TURNS LEFT TO A BRIDGE OVER THE RAILROAD TRACKS.
 JV4463'HERE TURN RIGHT ON A GRAVEL ROAD AND GO 0.5 MILE TO A FORK AT AN
 JV4463'OLD LOG CABIN.  TAKE THE RIGHT FORK AND GO 0.3 MILE TO A GRAVEL
 JV4463'ROAD LEFT.  TURN LEFT FOR 0.15 MILE THEN TURN LEFT ON A WOODS
 JV4463'ROAD AND GO 0.05 MILE.  THE STATION IS 100 FEET LEFT (N) OF THIS
 JV4463'POINT IN THE BRUSH.
 JV4463'
 JV4463'A 77-FOOT TOWER WILL SEE A 74-FOOT LIGHT AT SCHOOLS HILL 2.
 JV4463'
 JV4463'A 77-FOOT TOWER WILL SEE A 74-FOOT LIGHT AT WILBER.
 JV4463'
 JV4463'A 77-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT SCHOOL.
 JV4463'
 JV4463'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT COMUS.
 JV4463'
 JV4463'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT ATHEY 1943.
 JV4463'
 JV4463'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT POOLESVILLE 2 1943.
 JV4463'
 JV4463'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT IRON STONE RIDGE 2.
 JV4463'
 JV4463'HEIGHT OF LIGHT ABOVE STATION MARK - 26 METERS.
 JV4463
 JV4463                          STATION RECOVERY (1957)
 JV4463
 JV4463'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1957 (ARB)
 JV4463'STATION LOCATED AND VERIFIED BY POTOMAC ELECTRIC COMPANY ENGINEERS
 JV4463'AND SURVEYORS.
 JV4463'
 JV4463'STATION FOUND TO BE IN GOOD CONDITION.  AZIMUTH AND REFERENCE MARKS
 JV4463'IN GOOD CONDITION.  DESCRIPTION OF STATION IS ACCURATE.  AZIMUTH
 JV4463'MARK CANNOT BE SEEN FROM STATION ON ACCOUNT OF TREE GROWTH.
 JV4463
 JV4463                          STATION RECOVERY (1969)
 JV4463
 JV4463'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4463'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED.  THE
 JV4463'AZIMUTH MARK HAS BEEN DESTROYED BY CULTIVATION.  DUE TO ROAD CHANGES
 JV4463'A NEW COMPLETE DESCRIPTION FOLLOWS.
 JV4463'
 JV4463'THE STATION IS ABOUT 1-1/4 MILES SOUTHEAST OF BARNESVILLE IN A
 JV4463'WOODED AREA AND ON PROPERTY OF GARVIN TANKERSLEY.
 JV4463'
 JV4463'TO REACH THE STATION FROM THE JUNCTION OF ROUTE 109 AND BARNESVILLE
 JV4463'ROAD IN BARNESVILLE, GO SOUTHERLY ON ROUTE 109 FOR 0.8 MILE TO A
 JV4463'SIDE ROAD LEFT JUST BEYOND RAILROAD TRACKS.  TURN LEFT AND GO
 JV4463'EASTERLY ON SELLMAN ROAD FOR 0.65 MILE TO A SIDE ROAD RIGHT.  TURN
 JV4463'RIGHT AND GO SOUTHERLY ON PEACH TREE ROAD FOR 0.45 MILE TO A
 JV4463'FORK.  CONTINUE SOUTHERLY ON PEACH TREE ROAD FOR 0.3 MILE TO A DIM
 JV4463'WOODS ROAD LEFT.  TURN LEFT AND GO SOUTHEASTERLY ON THE WOODS
 JV4463'ROAD FOR 0.15 MILE TO A DIM WOODS ROAD LEFT.  TURN LEFT AND GO
 JV4463'NORTHEAST ON THE DIM WOODS ROAD FOR 0.05 MILE TO A DIM TRACK
 JV4463'ROAD.  TURN LEFT AND GO ABOUT 100 FEET ON THE DIM TRACK ROAD TO THE
 JV4463'STATION ON THE LEFT.
 JV4463'
 JV4463'THE STATION MARK IS A STANDARD DISK, STAMPED HEAP 1943, SET IN THE
 JV4463'TOP OF A 12 INCH SQUARE CONCRETE POST THAT PROJECTS 8 INCHES ABOVE
 JV4463'THE GROUND.  IT IS 95.0 FEET WEST OF THE TRACK ROAD AND 4.2 FEET
 JV4463'SOUTH OF A WITNESS POST.
 JV4463'
 JV4463'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED HEAP NO 1 1943, SET IN
 JV4463'THE TOP OF A 12 INCH SQUARE CONCRETE POST THAT PROJECTS 4 INCHES
 JV4463'ABOVE THE GROUND.  IT IS 72.8 FEET EAST OF THE WITNESS POST, 23.0
 JV4463'FEET WEST OF THE DIM TRACK ROAD AND ABOUT THE SAME IN ELEVATION AS
 JV4463'THE STATION.
 JV4463'
 JV4463'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED HEAP NO 2 1943, SET IN
 JV4463'THE TOP OF A 12 INCH SQUARE CONCRETE POST THAT PROJECTS 6 INCHES
 JV4463'ABOVE THE GROUND.  IT IS 91.2 FEET SOUTH OF THE WITNESS POST, 42.5
 JV4463'FEET NORTH OF THE DIM WOODS ROAD AND ABOUT THE SAME IN ELEVATION
 JV4463'AS THE STATION.
 JV4463'
 JV4463'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
 JV4463'
 JV4463'THE DISTANCE BETWEEN THE REFERENCE MARKS WAS NOT MEASURED DUE TO
 JV4463'OBSTRUCTIONS.
 JV4463'
 JV4463'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1-1/4 MILES
 JV4463'SOUTHEAST OF BARNESVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6770 ***********************************************************************
 JV6770  DESIGNATION -  HEAP
 JV6770  PID         -  JV6770
 JV6770  STATE/COUNTY-  MD/HARFORD
 JV6770  COUNTRY     -  US
 JV6770  USGS QUAD   -  DELTA (2019)
 JV6770
 JV6770                         *CURRENT SURVEY CONTROL
 JV6770  ______________________________________________________________________
 JV6770* NAD 83(2011) POSITION- 39 40 41.20059(N) 076 20 48.78502(W)   ADJUSTED
 JV6770* NAD 83(2011) ELLIP HT-    74.811 (meters)        (06/27/12)   ADJUSTED
 JV6770* NAD 83(2011) EPOCH   -  2010.00
 JV6770* NAVD 88 ORTHO HEIGHT -   107.6   (meters)      353.    (feet) VERTCON3
 JV6770  ______________________________________________________________________
 JV6770  GEOID HEIGHT    -        -32.740 (meters)                     GEOID18
 JV6770  NAD 83(2011) X  -  1,160,307.700 (meters)                     COMP
 JV6770  NAD 83(2011) Y  - -4,776,757.436 (meters)                     COMP
 JV6770  NAD 83(2011) Z  -  4,050,590.674 (meters)                     COMP
 JV6770  LAPLACE CORR    -         -2.52  (seconds)                    DEFLEC18
 JV6770
 JV6770  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6770  Standards:
 JV6770         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6770            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6770  -------------------------------------------------------------------
 JV6770  NETWORK    1.45   4.80           0.57   0.58   2.45      0.45599990
 JV6770  -------------------------------------------------------------------
 JV6770  Click here for local accuracies and other accuracy information.
 JV6770
 JV6770.The horizontal coordinates were established by GPS observations
 JV6770.and adjusted by the National Geodetic Survey in June 2012.
 JV6770
 JV6770.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6770.been affixed to the stable North American tectonic plate. See 
 JV6770.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6770
 JV6770.The horizontal coordinates are valid at the epoch date displayed above
 JV6770.which is a decimal equivalence of Year/Month/Day.
 JV6770
 JV6770.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6770.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6770
 JV6770.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6770.GEOID18 height accuracy estimate available here.
 JV6770
 JV6770.Click photographs - Photos may exist for this station.
 JV6770
 JV6770.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6770
 JV6770.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6770
 JV6770.The ellipsoidal height was determined by GPS observations
 JV6770.and is referenced to NAD 83.
 JV6770
 JV6770. The following values were computed from the NAD 83(2011) position.
 JV6770
 JV6770;                    North         East     Units Scale Factor Converg.
 JV6770;SPC MD       -   223,491.024   456,035.229   MT  1.00004787   +0 24 35.7
 JV6770;SPC MD       -   733,236.80  1,496,175.58   sFT  1.00004787   +0 24 35.7
 JV6770;UTM  18      - 4,392,898.642   384,490.319   MT  0.99976427   -0 51 36.2
 JV6770
 JV6770!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6770!SPC MD       -   0.99998826  x   1.00004787  =   1.00003613
 JV6770!UTM  18      -   0.99998826  x   0.99976427  =   0.99975254
 JV6770
 JV6770_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8449092898(NAD 83)
 JV6770
 JV6770                          SUPERSEDED SURVEY CONTROL
 JV6770
 JV6770  NAD 83(2007)-  39 40 41.20086(N)    076 20 48.78573(W) AD(2002.00) 0
 JV6770  ELLIP H (02/10/07)   74.830  (m)                       GP(2002.00)    
 JV6770  ELLIP H (09/18/02)   74.843  (m)                       GP(       ) 4 2
 JV6770  NAD 83(1991)-  39 40 41.20093(N)    076 20 48.78525(W) AD(       ) 1
 JV6770  ELLIP H (01/27/92)   74.842  (m)                       GP(       ) 4 1
 JV6770  NAD 83(1986)-  39 40 41.19380(N)    076 20 48.79148(W) AD(       ) 1
 JV6770  NGVD 29 (06/18/91)  107.8    (m)  UNKNOWN  model used  GPS OBS        
 JV6770
 JV6770.Superseded values are not recommended for survey control.
 JV6770
 JV6770.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6770.See file dsdata.pdf to determine how the superseded data were derived.
 JV6770
 JV6770_MARKER: DD = SURVEY DISK
 JV6770_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6770_STAMPING: 97 HEAP 1989
 JV6770_MARK LOGO: MD-025
 JV6770_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6770_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6770+STABILITY: SURFACE MOTION
 JV6770_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6770+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6770
 JV6770  HISTORY     - Date     Condition        Report By
 JV6770  HISTORY     - 1989     MONUMENTED       RDA
 JV6770  HISTORY     - 20010421 MARK NOT FOUND   USPSQD
 JV6770
 JV6770                          STATION DESCRIPTION
 JV6770
 JV6770'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6770'THE STATION IS LOCATED IN NORTH CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6770'1.5 MILES EAST OF THE VILLAGE OF PYLESVILLE.
 JV6770'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 136 AND
 JV6770'STATE HIGHWAY 165 IN THE VILLAGE OF WHITEFORD PROCEED SOUTHEAST ALONG
 JV6770'HIGHWAY 136 1.9 MILES TO ITS INTERSECTION WITH HEAPS ROAD.  TURN RIGHT
 JV6770'AND PROCEED SOUTHWEST ALONG HEAPS ROAD 2.05 MILES TO THE STATION ON
 JV6770'THE RIGHT.
 JV6770'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6770'ABOUT 1 INCH BELOW GROUND STAMPED 97 HEAP 1989.  THE STATION IS 8.6
 JV6770'FEET SOUTHWEST OF CONOWINGO POWER POLE NUMBER 13815, 28.5 FEET
 JV6770'NORTHWEST OF THE CENTERLINE OF HEAPS ROAD, AND 108.5 FEET EAST OF COW
 JV6770'CROSSING CAUTION SIGN.
 JV6770
 JV6770                          STATION RECOVERY (2001)
 JV6770
 JV6770'RECOVERY NOTE BY US POWER SQUADRON 2001 (JB)
 JV6770'DENSE VINES AND THORNS IN AREA.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6771 ***********************************************************************
 JV6771  DESIGNATION -  HEAP AZ MK
 JV6771  PID         -  JV6771
 JV6771  STATE/COUNTY-  MD/HARFORD
 JV6771  COUNTRY     -  US
 JV6771  USGS QUAD   -  DELTA (2019)
 JV6771
 JV6771                         *CURRENT SURVEY CONTROL
 JV6771  ______________________________________________________________________
 JV6771* NAD 83(2011) POSITION- 39 40 30.41021(N) 076 21 09.10314(W)   ADJUSTED
 JV6771* NAD 83(2011) ELLIP HT-    93.588 (meters)        (06/27/12)   ADJUSTED
 JV6771* NAD 83(2011) EPOCH   -  2010.00
 JV6771* NAVD 88 ORTHO HEIGHT -   126.3   (meters)      414.    (feet) VERTCON3
 JV6771  ______________________________________________________________________
 JV6771  GEOID HEIGHT    -        -32.730 (meters)                     GEOID18
 JV6771  NAD 83(2011) X  -  1,159,890.702 (meters)                     COMP
 JV6771  NAD 83(2011) Y  - -4,777,092.227 (meters)                     COMP
 JV6771  NAD 83(2011) Z  -  4,050,346.525 (meters)                     COMP
 JV6771  LAPLACE CORR    -         -2.64  (seconds)                    DEFLEC18
 JV6771
 JV6771  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6771  Standards:
 JV6771         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6771            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6771  -------------------------------------------------------------------
 JV6771  NETWORK    1.50   5.10           0.59   0.60   2.60      0.46732102
 JV6771  -------------------------------------------------------------------
 JV6771  Click here for local accuracies and other accuracy information.
 JV6771
 JV6771.The horizontal coordinates were established by GPS observations
 JV6771.and adjusted by the National Geodetic Survey in June 2012.
 JV6771
 JV6771.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6771.been affixed to the stable North American tectonic plate. See 
 JV6771.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6771
 JV6771.The horizontal coordinates are valid at the epoch date displayed above
 JV6771.which is a decimal equivalence of Year/Month/Day.
 JV6771
 JV6771.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6771.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6771
 JV6771.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6771.GEOID18 height accuracy estimate available here.
 JV6771
 JV6771.Click photographs - Photos may exist for this station.
 JV6771
 JV6771.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6771
 JV6771.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6771
 JV6771.The ellipsoidal height was determined by GPS observations
 JV6771.and is referenced to NAD 83.
 JV6771
 JV6771. The following values were computed from the NAD 83(2011) position.
 JV6771
 JV6771;                    North         East     Units Scale Factor Converg.
 JV6771;SPC MD       -   223,154.778   455,553.367   MT  1.00004714   +0 24 23.0
 JV6771;SPC MD       -   732,133.63  1,494,594.67   sFT  1.00004714   +0 24 23.0
 JV6771;UTM  18      - 4,392,573.250   384,001.261   MT  0.99976566   -0 51 48.9
 JV6771
 JV6771!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6771!SPC MD       -   0.99998532  x   1.00004714  =   1.00003246
 JV6771!UTM  18      -   0.99998532  x   0.99976566  =   0.99975098
 JV6771
 JV6771_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8400192573(NAD 83)
 JV6771
 JV6771                          SUPERSEDED SURVEY CONTROL
 JV6771
 JV6771  NAD 83(2007)-  39 40 30.41048(N)    076 21 09.10386(W) AD(2002.00) 0
 JV6771  ELLIP H (02/10/07)   93.608  (m)                       GP(2002.00)    
 JV6771  ELLIP H (09/18/02)   93.623  (m)                       GP(       ) 4 2
 JV6771  NAD 83(1991)-  39 40 30.41053(N)    076 21 09.10339(W) AD(       ) 1
 JV6771  ELLIP H (01/27/92)   93.622  (m)                       GP(       ) 4 1
 JV6771  NAD 83(1986)-  39 40 30.40341(N)    076 21 09.10966(W) AD(       ) 1
 JV6771  NGVD 29 (06/18/91)  126.6    (m)  UNKNOWN  model used  GPS OBS        
 JV6771
 JV6771.Superseded values are not recommended for survey control.
 JV6771
 JV6771.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6771.See file dsdata.pdf to determine how the superseded data were derived.
 JV6771
 JV6771_MARKER: DZ = AZIMUTH MARK DISK
 JV6771_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6771_STAMPING: 97 HEAP 1989
 JV6771_MARK LOGO: MD-025
 JV6771_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6771_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6771+STABILITY: SURFACE MOTION
 JV6771_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6771+SATELLITE: SATELLITE OBSERVATIONS - January 15, 1990
 JV6771
 JV6771  HISTORY     - Date     Condition        Report By
 JV6771  HISTORY     - 1989     MONUMENTED       RDA
 JV6771  HISTORY     - 19900115 GOOD
 JV6771
 JV6771                          STATION DESCRIPTION
 JV6771
 JV6771'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6771'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED WEST ALONG HEAPS
 JV6771'ROAD 0.4 MILES TO THE MARK ON THE LEFT.
 JV6771'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6771'ABOUT 1 INCH BELOW GROUND STAMPED 97 HEAP 1989.  THE MARK IS 22.4 FEET
 JV6771'SOUTHEAST OF THE CENTERLINE OF HEAPS ROAD, 43.7 FEET SOUTH OF
 JV6771'CONOWINGO POWER POLE NUMBER 20797, AND 37.6 FEET NORTHEAST OF A 4 INCH
 JV6771'MAPLE TREE AND 1927.69 FEET FROM THE STATION.
 JV6771
 JV6771                          STATION RECOVERY (1990)
 JV6771
 JV6771'RECOVERED 1990
 JV6771'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0622 ***********************************************************************
 HU0622  DESIGNATION -  HEBRO AZ MK
 HU0622  PID         -  HU0622
 HU0622  STATE/COUNTY-  MD/WICOMICO
 HU0622  COUNTRY     -  US
 HU0622  USGS QUAD   -  HEBRON (2016)
 HU0622
 HU0622                         *CURRENT SURVEY CONTROL
 HU0622  ______________________________________________________________________
 HU0622* NAD 83(1986) POSITION- 38 24 37.     (N) 075 41 56.     (W)   SCALED
 HU0622* NAVD 88 ORTHO HEIGHT -    11.161 (meters)       36.62  (feet) ADJUSTED
 HU0622  ______________________________________________________________________
 HU0622  GEOID HEIGHT    -        -35.685 (meters)                     GEOID18
 HU0622  DYNAMIC HEIGHT  -         11.154 (meters)       36.59  (feet) COMP
 HU0622  MODELED GRAVITY -    980,010.6   (mgal)                       NAVD 88
 HU0622
 HU0622  VERT ORDER      -  SECOND    CLASS 0
 HU0622
 HU0622.The horizontal coordinates were scaled from a map and have
 HU0622.an estimated accuracy of +/- 6 seconds.
 HU0622
 HU0622.The orthometric height was determined by differential leveling and
 HU0622.adjusted by the NATIONAL GEODETIC SURVEY
 HU0622.in June 1991.
 HU0622
 HU0622.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0622.GEOID18 height accuracy estimate available here.
 HU0622
 HU0622.Click photographs - Photos may exist for this station.
 HU0622
 HU0622.The dynamic height is computed by dividing the NAVD 88
 HU0622.geopotential number by the normal gravity value computed on the
 HU0622.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0622.degrees latitude (g = 980.6199 gals.).
 HU0622
 HU0622.The modeled gravity was interpolated from observed gravity values.
 HU0622
 HU0622;                    North         East    Units  Estimated Accuracy
 HU0622;SPC MD       -    83,350.      513,630.      MT  (+/- 180 meters Scaled)
 HU0622
 HU0622_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH389515(NAD 83)
 HU0622
 HU0622                          SUPERSEDED SURVEY CONTROL
 HU0622
 HU0622  NGVD 29 (11/26/84)   11.413  (m)           37.44   (f) ADJUSTED    2 0
 HU0622
 HU0622.Superseded values are not recommended for survey control.
 HU0622
 HU0622.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0622.See file dsdata.pdf to determine how the superseded data were derived.
 HU0622
 HU0622_MARKER: DD = SURVEY DISK
 HU0622_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0622_STAMPING: HEBRO AZ 1964
 HU0622_MARK LOGO: MDBCSM
 HU0622_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0622_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0622+STABILITY: SURFACE MOTION
 HU0622
 HU0622  HISTORY     - Date     Condition        Report By
 HU0622  HISTORY     - 1964     MONUMENTED       MDBCSM
 HU0622  HISTORY     - 1971     GOOD             NGS
 HU0622  HISTORY     - 19900121 MARK NOT FOUND   NGS
 HU0622
 HU0622                          STATION DESCRIPTION
 HU0622
 HU0622'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0622'0.8 MI NW FROM HEBRON.
 HU0622'ABOUT 0.85 MILE SOUTHWEST ALONG STATE HIGHWAY 347 FROM THE POST
 HU0622'OFFICE AT HEBRON, 27 1/2 FEET SOUTHEAST OF THE CENTER LINE OF THE
 HU0622'HIGHWAY, 50 FEET EAST OF TELEPHONE POLE NUMBER 6, 170.0 FEET
 HU0622'SOUTH-SOUTHWEST OF BENCH MARK XX 111 (MD SRC), AND SET IN THE TOP
 HU0622'OF A CONCRETE POST PROJECTING 3 INCHES.
 HU0622
 HU0622                          STATION RECOVERY (1990)
 HU0622
 HU0622'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0622'A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2240 ***********************************************************************
 HU2240  DESIGNATION -  HEBRON 2
 HU2240  PID         -  HU2240
 HU2240  STATE/COUNTY-  MD/WICOMICO
 HU2240  COUNTRY     -  US
 HU2240  USGS QUAD   -  HEBRON (2016)
 HU2240
 HU2240                         *CURRENT SURVEY CONTROL
 HU2240  ______________________________________________________________________
 HU2240* NAD 83(2011) POSITION- 38 25 49.41564(N) 075 40 27.50384(W)   ADJUSTED
 HU2240* NAD 83(2011) ELLIP HT-   -22.431 (meters)        (06/27/12)   ADJUSTED
 HU2240* NAD 83(2011) EPOCH   -  2010.00
 HU2240* NAVD 88 ORTHO HEIGHT -    13.241 (meters)       43.44  (feet) ADJUSTED
 HU2240  ______________________________________________________________________
 HU2240  GEOID HEIGHT    -        -35.686 (meters)                     GEOID18
 HU2240  NAD 83(2011) X  -  1,237,874.824 (meters)                     COMP
 HU2240  NAD 83(2011) Y  - -4,847,293.571 (meters)                     COMP
 HU2240  NAD 83(2011) Z  -  3,942,965.538 (meters)                     COMP
 HU2240  LAPLACE CORR    -         -1.55  (seconds)                    DEFLEC18
 HU2240  DYNAMIC HEIGHT  -         13.233 (meters)       43.42  (feet) COMP
 HU2240  MODELED GRAVITY -    980,011.7   (mgal)                       NAVD 88
 HU2240
 HU2240  VERT ORDER      -  SECOND    CLASS I
 HU2240
 HU2240  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU2240  Standards:
 HU2240         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU2240            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU2240  -------------------------------------------------------------------
 HU2240  NETWORK    0.88   1.55           0.38   0.34   0.79     -0.03227978
 HU2240  -------------------------------------------------------------------
 HU2240  Click here for local accuracies and other accuracy information.
 HU2240
 HU2240.The horizontal coordinates were established by GPS observations
 HU2240.and adjusted by the National Geodetic Survey in June 2012.
 HU2240
 HU2240.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU2240.been affixed to the stable North American tectonic plate. See 
 HU2240.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU2240
 HU2240.The horizontal coordinates are valid at the epoch date displayed above
 HU2240.which is a decimal equivalence of Year/Month/Day.
 HU2240
 HU2240.The orthometric height was determined by differential leveling and
 HU2240.adjusted by the NATIONAL GEODETIC SURVEY
 HU2240.in June 1991.
 HU2240
 HU2240.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2240.GEOID18 height accuracy estimate available here.
 HU2240
 HU2240.Click photographs - Photos may exist for this station.
 HU2240
 HU2240.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU2240
 HU2240.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2240
 HU2240.The ellipsoidal height was determined by GPS observations
 HU2240.and is referenced to NAD 83.
 HU2240
 HU2240.The dynamic height is computed by dividing the NAVD 88
 HU2240.geopotential number by the normal gravity value computed on the
 HU2240.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2240.degrees latitude (g = 980.6199 gals.).
 HU2240
 HU2240.The modeled gravity was interpolated from observed gravity values.
 HU2240
 HU2240. The following values were computed from the NAD 83(2011) position.
 HU2240
 HU2240;                    North         East     Units Scale Factor Converg.
 HU2240;SPC MD       -    85,617.262   515,748.710   MT  0.99997988   +0 49 55.4
 HU2240;SPC MD       -   280,895.97  1,692,085.56   sFT  0.99997988   +0 49 55.4
 HU2240;UTM  18      - 4,253,785.068   441,145.042   MT  0.99964266   -0 25 08.9
 HU2240
 HU2240!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2240!SPC MD       -   1.00000352  x   0.99997988  =   0.99998340
 HU2240!UTM  18      -   1.00000352  x   0.99964266  =   0.99964618
 HU2240
 HU2240:                Primary Azimuth Mark                     Grid Az
 HU2240:SPC MD       -  HEBRON AZ MK                             145 59 23.4
 HU2240:UTM  18      -  HEBRON AZ MK                             147 14 27.7
 HU2240
 HU2240_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4114553785(NAD 83)
 HU2240
 HU2240|---------------------------------------------------------------------|
 HU2240| PID    Reference Object                     Distance      Geod. Az  |
 HU2240|                                                           dddmmss.s |
 HU2240| DJ3500 HEBRON AZ MK                        APPROX. 1.3 KM 1464918.8 |
 HU2240|---------------------------------------------------------------------|
 HU2240
 HU2240                          SUPERSEDED SURVEY CONTROL
 HU2240
 HU2240  NAD 83(2007)-  38 25 49.41604(N)    075 40 27.50447(W) AD(2002.00) 1
 HU2240  ELLIP H (04/02/09)  -22.397  (m)                       GP(2002.00) 4 1
 HU2240  NAD 83(1991)-  38 25 49.41599(N)    075 40 27.50427(W) AD(       ) 1
 HU2240  ELLIP H (10/15/07)  -22.389  (m)                       GP(       ) 4 1
 HU2240  NAVD 88              13.24   (m)           43.4    (f) LEVELING    3  
 HU2240  NGVD 29 (06/12/91)   13.487  (m)           44.25   (f) ADJUSTED    2 1
 HU2240
 HU2240.Superseded values are not recommended for survey control.
 HU2240
 HU2240.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2240.See file dsdata.pdf to determine how the superseded data were derived.
 HU2240
 HU2240_MARKER: DD = SURVEY DISK
 HU2240_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2240_STAMPING: HEBRON 2 1989
 HU2240_MARK LOGO: MDSHA
 HU2240_PROJECTION: RECESSED 8 CENTIMETERS
 HU2240_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2240_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2240+STABILITY: SURFACE MOTION
 HU2240_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2240+SATELLITE: SATELLITE OBSERVATIONS - September 06, 2018
 HU2240
 HU2240  HISTORY     - Date     Condition        Report By
 HU2240  HISTORY     - 1989     MONUMENTED       MDSHA
 HU2240  HISTORY     - 19900124 GOOD             NGS
 HU2240  HISTORY     - 20010502 GOOD             MDSHA
 HU2240  HISTORY     - 20020618 GOOD             MDSHA
 HU2240  HISTORY     - 20040419 GOOD             GEOCAC
 HU2240  HISTORY     - 20180906 GOOD             ARCSHE
 HU2240
 HU2240                          STATION DESCRIPTION
 HU2240
 HU2240'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2240'1.8 KM (1.12 MI) NORTHEASTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU2240'ROAD) FROM THE POST OFFICE IN HEBRON, IN THE MEDIAN OF U.S. HIGHWAY
 HU2240'50, 21.4 M (70.21 FT) NORTHWEST OF THE CENTER OF THE STATE HIGHWAY,
 HU2240'11.5 M (37.73 FT) SOUTHWEST OF THE CENTERLINE OF THE WESTBOUND LANES
 HU2240'OF THE U.S. HIGHWAY, 9.0 M (29.53 FT) NORTHEAST OF THE CENTERLINE OF
 HU2240'THE EASTBOUND BOUND LANES OF THE U.S. HIGHWAY, LEVEL WITH THE U.S.
 HU2240'HIGHWAY, AND IN A CONCRETE MONUMENT THAT IS 0.1 M (0.33 FT) BELOW THE
 HU2240'GROUND SURFACE.
 HU2240
 HU2240                          STATION RECOVERY (2001)
 HU2240
 HU2240'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU2240'RECOVERED AS DESCRIBED.
 HU2240
 HU2240                          STATION RECOVERY (2002)
 HU2240
 HU2240'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 HU2240'RECOVERED AS DESCRIBED.
 HU2240
 HU2240                          STATION RECOVERY (2004)
 HU2240
 HU2240'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU2240'ADDITIONALLY, THE MARK LIES TWO FEET (0.61 M) NORTHEAST OF THE
 HU2240'NORTHEAST EDGE OF PAVEMENT OF THE SOUTHBOUND LANES OF US RTE 50.
 HU2240
 HU2240                          STATION RECOVERY (2018)
 HU2240
 HU2240'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 HU2240'THE MARK IS NEAR THE SOUTHEAST END OF THE LEFT TURN LANE FOR EASTBOUND
 HU2240'US 50 TRAFFIC ONTO MEMORY GARDEN LANE (MD 347).  IT IS 44.7 FT (13.6
 HU2240'M) NORTHWEST OF THE SOUTHEAST BULLNOSE OF THE GRASS MEDIAN, 29.4 FT
 HU2240'(9.0 M) NORTH OF A CONCRETE BULLNOSE FOR THE TURN LANE TO MD 347, 28.5
 HU2240'FT (8.7 M) NORTHEAST OF THE CENTERLINE OF THE EASTBOUND LANE OF US 50,
 HU2240'1.0 FT (0.3 M) NORTHEAST OF THE NORTHEAST EDGE OF PAVEMENT OF THE LEFT
 HU2240'TURN LANE SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND
 HU2240'ABOUT 1.0 FT (0.3 M) LOWER THAN THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ3500 ***********************************************************************
 DJ3500  DESIGNATION -  HEBRON AZ MK
 DJ3500  PID         -  DJ3500
 DJ3500  STATE/COUNTY-  MD/WICOMICO
 DJ3500  COUNTRY     -  US
 DJ3500  USGS QUAD   -  HEBRON (2016)
 DJ3500
 DJ3500                         *CURRENT SURVEY CONTROL
 DJ3500  ______________________________________________________________________
 DJ3500* NAD 83(2011) POSITION- 38 25 14.60333(N) 075 39 58.57205(W)   ADJUSTED
 DJ3500* NAD 83(2011) ELLIP HT-   -18.059 (meters)        (06/27/12)   ADJUSTED
 DJ3500* NAD 83(2011) EPOCH   -  2010.00
 DJ3500* NAVD 88 ORTHO HEIGHT -    17.6   (meters)       58.    (feet) GPS OBS
 DJ3500  ______________________________________________________________________
 DJ3500  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DJ3500  GEOID HEIGHT    -        -35.663 (meters)                     GEOID03
 DJ3500  GEOID HEIGHT    -        -35.701 (meters)                     GEOID18
 DJ3500  NAD 83(2011) X  -  1,238,720.728 (meters)                     COMP
 DJ3500  NAD 83(2011) Y  - -4,847,769.572 (meters)                     COMP
 DJ3500  NAD 83(2011) Z  -  3,942,127.320 (meters)                     COMP
 DJ3500  LAPLACE CORR    -         -1.49  (seconds)                    DEFLEC18
 DJ3500
 DJ3500  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ3500  Standards:
 DJ3500         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ3500            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ3500  -------------------------------------------------------------------
 DJ3500  NETWORK    1.19   2.02           0.50   0.47   1.03     -0.09990669
 DJ3500  -------------------------------------------------------------------
 DJ3500  Click here for local accuracies and other accuracy information.
 DJ3500
 DJ3500.The horizontal coordinates were established by GPS observations
 DJ3500.and adjusted by the National Geodetic Survey in June 2012.
 DJ3500
 DJ3500.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ3500.been affixed to the stable North American tectonic plate. See 
 DJ3500.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ3500
 DJ3500.The horizontal coordinates are valid at the epoch date displayed above
 DJ3500.which is a decimal equivalence of Year/Month/Day.
 DJ3500
 DJ3500.The orthometric height was determined by GPS observations and a
 DJ3500.high-resolution geoid model.
 DJ3500
 DJ3500.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ3500.GEOID18 height accuracy estimate available here.
 DJ3500
 DJ3500.Click photographs - Photos may exist for this station.
 DJ3500
 DJ3500.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ3500
 DJ3500.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ3500
 DJ3500.The ellipsoidal height was determined by GPS observations
 DJ3500.and is referenced to NAD 83.
 DJ3500
 DJ3500. The following values were computed from the NAD 83(2011) position.
 DJ3500
 DJ3500;                    North         East     Units Scale Factor Converg.
 DJ3500;SPC MD       -    84,554.195   516,466.033   MT  0.99998119   +0 50 13.5
 DJ3500;SPC MD       -   277,408.22  1,694,438.98   sFT  0.99998119   +0 50 13.5
 DJ3500;UTM  18      - 4,252,706.956   441,838.747   MT  0.99964166   -0 24 50.6
 DJ3500
 DJ3500!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ3500!SPC MD       -   1.00000283  x   0.99998119  =   0.99998402
 DJ3500!UTM  18      -   1.00000283  x   0.99964166  =   0.99964449
 DJ3500
 DJ3500:                Primary Azimuth Mark                     Grid Az
 DJ3500:SPC MD       -  HEBRON 2                                 325 59 23.3
 DJ3500:UTM  18      -  HEBRON 2                                 327 14 27.4
 DJ3500
 DJ3500_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4183852706(NAD 83)
 DJ3500
 DJ3500|---------------------------------------------------------------------|
 DJ3500| PID    Reference Object                     Distance      Geod. Az  |
 DJ3500|                                                           dddmmss.s |
 DJ3500| HU2240 HEBRON 2                            APPROX. 1.3 KM 3264936.8 |
 DJ3500|---------------------------------------------------------------------|
 DJ3500
 DJ3500                          SUPERSEDED SURVEY CONTROL
 DJ3500
 DJ3500  NAD 83(2007)-  38 25 14.60371(N)    075 39 58.57269(W) AD(2002.00) 1
 DJ3500  ELLIP H (04/02/09)  -18.026  (m)                       GP(2002.00) 4 1
 DJ3500  NAD 83(1991)-  38 25 14.60368(N)    075 39 58.57246(W) AD(       ) 1
 DJ3500  ELLIP H (10/15/07)  -18.018  (m)                       GP(       ) 4 1
 DJ3500
 DJ3500.Superseded values are not recommended for survey control.
 DJ3500
 DJ3500.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ3500.See file dsdata.pdf to determine how the superseded data were derived.
 DJ3500
 DJ3500_MARKER: DD = SURVEY DISK
 DJ3500_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ3500_STAMPING: HEBRON AZ 1960
 DJ3500_MARK LOGO: MDBCSM
 DJ3500_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ3500_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ3500+STABILITY: SURFACE MOTION
 DJ3500_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ3500+SATELLITE: SATELLITE OBSERVATIONS - August 03, 2021
 DJ3500
 DJ3500  HISTORY     - Date     Condition        Report By
 DJ3500  HISTORY     - 1960     MONUMENTED       MDBCSM
 DJ3500  HISTORY     - 20020624 GOOD             MDSHA
 DJ3500  HISTORY     - 20210803 GOOD             BASE9
 DJ3500
 DJ3500                          STATION DESCRIPTION
 DJ3500
 DJ3500'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 DJ3500'THE MARK IS LOCATED ABOUT 5.5 MI (8.9 KM) NORTHWEST OF SALISBURY, 5.2
 DJ3500'MI (8.4 KM) NORTHEAST OF QUANTICO AND 1.2 MI (1.9 KM) EAST OF HEBRON.
 DJ3500'TO REACH THE MARK FROM THE POST OFFICE IN HEBRON, GO NORTHEAST ON
 DJ3500'STATE ROUTE 347 FOR 1.1 MI (1.77 KM) TO THE INTERSECTION OF US ROUTE
 DJ3500'50.  TURN RIGHT AND GO SOUTHEAST ON US ROUTE 50 FOR 0.7 MI (1.13 KM)
 DJ3500'TO THE MARK ON THE LEFT.
 DJ3500'
 DJ3500'IT IS 23.5 FT (7.2 M) NORTHEAST OF THE NORTHEAST EDGE OF SHOULDER FOR
 DJ3500'WESTBOUND U.S.50, 41.0 FT (12.5 M) SOUTHEAST OF POWER POLE
 DJ3500'44945-95173, 7.0 FT (2.1 M) NORTHWEST OF A CONCRETE RIGHT-OF-WAY
 DJ3500'MONUMENT, SET IN THE TOP OF A 6-INCH (15 CM) ROUND CONCRETE POST IN
 DJ3500'THE LAWN TO HOUSE NUMBER 27284.
 DJ3500
 DJ3500                          STATION RECOVERY (2021)
 DJ3500
 DJ3500'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2021 (DRD)
 DJ3500'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5960 ***********************************************************************
 HV5960  DESIGNATION -  HEDGE 1901
 HV5960  PID         -  HV5960
 HV5960  STATE/COUNTY-  MD/DORCHESTER
 HV5960  COUNTRY     -  US
 HV5960  USGS QUAD   -  CHURCH CREEK (2016)
 HV5960
 HV5960                         *CURRENT SURVEY CONTROL
 HV5960  ______________________________________________________________________
 HV5960* NAD 83(1991) POSITION- 38 31 59.53614(N) 076 09 02.56082(W)   ADJUSTED
 HV5960* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5960  ______________________________________________________________________
 HV5960  GEOID HEIGHT    -        -34.957 (meters)                     GEOID18
 HV5960  LAPLACE CORR    -         -4.20  (seconds)                    DEFLEC18
 HV5960  HORZ ORDER      -  THIRD
 HV5960
 HV5960.The horizontal coordinates were established by classical geodetic methods
 HV5960.and adjusted by the National Geodetic Survey in January 1992.
 HV5960
 HV5960.The orthometric height was scaled from a topographic map.
 HV5960
 HV5960.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5960.GEOID18 height accuracy estimate available here.
 HV5960
 HV5960.Click photographs - Photos may exist for this station.
 HV5960
 HV5960.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5960
 HV5960. The following values were computed from the NAD 83(1991) position.
 HV5960
 HV5960;                    North         East     Units Scale Factor Converg.
 HV5960;SPC MD       -    96,533.569   474,048.309   MT  0.99996762   +0 31 59.0
 HV5960;SPC MD       -   316,710.55  1,555,273.49   sFT  0.99996762   +0 31 59.0
 HV5960;UTM  18      - 4,265,605.327   399,704.974   MT  0.99972387   -0 43 00.9
 HV5960
 HV5960!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5960!SPC MD       -   1.00000536  x   0.99996762  =   0.99997298
 HV5960!UTM  18      -   1.00000536  x   0.99972387  =   0.99972923
 HV5960
 HV5960_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9970465605(NAD 83)
 HV5960
 HV5960|---------------------------------------------------------------------|
 HV5960| PID    Reference Object                     Distance      Geod. Az  |
 HV5960|                                                           dddmmss.s |
 HV5960| HV5962 BLUFF 1901                          354.860 METERS 10852     |
 HV5960| HV5926 WALNUT 1901                         369.777 METERS 18513     |
 HV5960|---------------------------------------------------------------------|
 HV5960
 HV5960                          SUPERSEDED SURVEY CONTROL
 HV5960
 HV5960  NAD 83(1986)-  38 31 59.53353(N)    076 09 02.57699(W) AD(       ) 3
 HV5960  NAD 27      -  38 31 59.12800(N)    076 09 03.76300(W) AD(       ) 3
 HV5960  USSD        -  38 31 59.55700(N)    076 09 03.54500(W) AD(       ) 3
 HV5960
 HV5960.Superseded values are not recommended for survey control.
 HV5960
 HV5960.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5960.See file dsdata.pdf to determine how the superseded data were derived.
 HV5960
 HV5960_MARKER: Z = SEE DESCRIPTION
 HV5960_SETTING: 0 = UNSPECIFIED SETTING
 HV5960_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5960
 HV5960  HISTORY     - Date     Condition        Report By
 HV5960  HISTORY     - 1901     MONUMENTED       CGS
 HV5960
 HV5960                          STATION DESCRIPTION
 HV5960
 HV5960'DESCRIBED BY COAST AND GEODETIC SURVEY 1901 (JWD)
 HV5960'ON THE N SIDE OF FISHING CREEK, NEARLY OPPOSITE SIGNAL WALNUT, ON
 HV5960'HARD MARSHLAND, 16 METERS ESE FROM LINE OF THORN HEDGE AND 5.6
 HV5960'METERS (18.4 FEET) FROM PLANK STUB IN MARSH.  CENTER MARKED BY
 HV5960'LOCUST STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7053 ***********************************************************************
 HV7053  DESIGNATION -  HEDNEY 1908
 HV7053  PID         -  HV7053
 HV7053  STATE/COUNTY-  MD/CHARLES
 HV7053  COUNTRY     -  US
 HV7053  USGS QUAD   -  ROCK POINT (2016)
 HV7053
 HV7053                         *CURRENT SURVEY CONTROL
 HV7053  ______________________________________________________________________
 HV7053* NAD 83(1993) POSITION- 38 17 59.19717(N) 076 50 47.08948(W)   ADJUSTED
 HV7053* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7053  ______________________________________________________________________
 HV7053  GEOID HEIGHT    -        -33.678 (meters)                     GEOID18
 HV7053  LAPLACE CORR    -         -1.30  (seconds)                    DEFLEC18
 HV7053  HORZ ORDER      -  THIRD
 HV7053
 HV7053.The horizontal coordinates were established by classical geodetic methods
 HV7053.and adjusted by the National Geodetic Survey in November 1994.
 HV7053
 HV7053.The orthometric height was scaled from a topographic map.
 HV7053
 HV7053.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7053.GEOID18 height accuracy estimate available here.
 HV7053
 HV7053.Click photographs - Photos may exist for this station.
 HV7053
 HV7053.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7053
 HV7053. The following values were computed from the NAD 83(1993) position.
 HV7053
 HV7053;                    North         East     Units Scale Factor Converg.
 HV7053;SPC MD       -    70,289.402   413,434.754   MT  1.00000004   +0 05 47.0
 HV7053;SPC MD       -   230,607.81  1,356,410.52   sFT  1.00000004   +0 05 47.0
 HV7053;UTM  18      - 4,240,689.423   338,545.392   MT  0.99992104   -1 08 40.6
 HV7053
 HV7053!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7053!SPC MD       -   1.00000533  x   1.00000004  =   1.00000537
 HV7053!UTM  18      -   1.00000533  x   0.99992104  =   0.99992637
 HV7053
 HV7053:                Primary Azimuth Mark                     Grid Az
 HV7053:SPC MD       -  GUST 1908                                345 55 47.8
 HV7053:UTM  18      -  GUST 1908                                347 10 15.4
 HV7053
 HV7053_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3854540689(NAD 83)
 HV7053
 HV7053|---------------------------------------------------------------------|
 HV7053| PID    Reference Object                     Distance      Geod. Az  |
 HV7053|                                                           dddmmss.s |
 HV7053| HV7065 BUSHWOOD SACRED HEART CH SPIRE      APPROX. 4.8 KM 0863052.6 |
 HV7053| HV7061 GUST 1908                           APPROX. 1.9 KM 3460134.8 |
 HV7053|---------------------------------------------------------------------|
 HV7053
 HV7053                          SUPERSEDED SURVEY CONTROL
 HV7053
 HV7053  NAD 83(1991)-  38 17 59.19654(N)    076 50 47.09443(W) AD(       ) 3
 HV7053  NAD 83(1986)-  38 17 59.19712(N)    076 50 47.10520(W) AD(       ) 3
 HV7053  NAD 27      -  38 17 58.69700(N)    076 50 48.18200(W) AD(       ) 3
 HV7053  USSD        -  38 17 59.38500(N)    076 50 48.27700(W) AD(       ) 3
 HV7053
 HV7053.Superseded values are not recommended for survey control.
 HV7053
 HV7053.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7053.See file dsdata.pdf to determine how the superseded data were derived.
 HV7053
 HV7053_MARKER: H = DRILL HOLE
 HV7053_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7053_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7053+STABILITY: SURFACE MOTION
 HV7053
 HV7053  HISTORY     - Date     Condition        Report By
 HV7053  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7053  HISTORY     - 1933     GOOD             CGS
 HV7053
 HV7053                          STATION DESCRIPTION
 HV7053
 HV7053'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7053'ON THE WESTERN SHORE OF WICOMICO RIVER, ON FIRST POINT ABOVE
 HV7053'MOUTH OF CHARLESTON CREEK, AND ABOUT 1-3/4 MILES NW OF WHITE
 HV7053'POINT, ABOUT 25 FEET ABOVE HIGH WATER, 16 YARDS WSW OF EDGE OF
 HV7053'BANK, 139 YARDS N OF LARGE TREE AT EDGE OF BANK, 85 YARDS N OF OAK
 HV7053'TREE AT EDGE OF BANK, 155 YARDS ENE OF GUM TREE 20 INCHES IN
 HV7053'DIAMETER ON BANK OF POND, AND ABOUT 1/8 MILE ESE OF HOUSE AMONG
 HV7053'TREES.  STATION MARK IS CENTER OF STANDARD MONUMENT OF MARYLAND
 HV7053'SHELL FISH SURVEY, WHICH IS MADE OF CONCRETE AND IS 2 FEET LONG
 HV7053'AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP IS MARKED WITH
 HV7053'THE SAME MOLD AND SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE,
 HV7053'WITH COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND
 HV7053'THE LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE
 HV7053'CENTER HOLE IS ALWAYS AT THE CENTER OF THE MONUMENT AND IF THE MARKING
 HV7053'HAS BEEN BROKEN OFF WITHOUT DISTURBING THE BOTTOM, THE CENTER OF
 HV7053'THE SQUARE SECTION MAY BE USED AS THE LOCATION OF THE STATION.
 HV7053'THE MONUMENT IS SET VERTICALLY IN THE GROUND WITH TOP ABOUT 12
 HV7053'INCHES BELOW SURFACE OF GROUND.  SURFACE MARK IS NAIL IN STUB WITH
 HV7053'TOP 5 INCHES ABOVE SURFACE OF GROUND.  DISTANCES AND BEARINGS FROM
 HV7053'STATION TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--MIDDLE OF
 HV7053'GUM TREE 138.47 METERS (454.3 FEET), S 54 DEG 17 MIN W.  NEAR
 HV7053'PEAK OF ROOF BETWEEN TWO CHIMNEYS, 3/4 MILE, N 33 DEG 41 MIN W.
 HV7053'NEAR CHIMNEY ON LARGE HOUSE, 1-5/8 MILES, N 38 DEG 50 MIN E.
 HV7053'CHIMNEY OF LYON HOUSE, 1-1/8 MILES, N 79 DEG 11 MIN E.  RIGHT
 HV7053'CHIMNEY OF A LARGE HOUSE, 2 MILES, S 80 DEG 26 MIN E.  MIDDLE OF
 HV7053'ISLAND AT END OF WHITE POINT BAR, 1-7/8 MILES, S 54 DEG 44 MIN E.
 HV7053'NAIL IN BLAZE IN 48-INCH OAK TREE, 73.16 METERS (240.0 FEET), S 43
 HV7053'DEG 1 MIN E.  NAIL IN BLAZE IN 36-INCH WALNUT TREE, 115.63 METERS
 HV7053'(379.4 FEET), S 8 DEG 37 MIN E.
 HV7053
 HV7053                          STATION RECOVERY (1933)
 HV7053
 HV7053'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (HEC)
 HV7053'STATION LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5775 ***********************************************************************
 JV5775  DESIGNATION -  HELENA
 JV5775  PID         -  JV5775
 JV5775  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5775  COUNTRY     -  US
 JV5775  USGS QUAD   -  ROUND BAY (2016)
 JV5775
 JV5775                         *CURRENT SURVEY CONTROL
 JV5775  ______________________________________________________________________
 JV5775* NAD 83(1991) POSITION- 39 02 26.63432(N) 076 33 47.40200(W)   ADJUSTED
 JV5775* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 JV5775  ______________________________________________________________________
 JV5775  GEOID HEIGHT    -        -33.092 (meters)                     GEOID18
 JV5775  LAPLACE CORR    -         -5.03  (seconds)                    DEFLEC18
 JV5775  HORZ ORDER      -  THIRD
 JV5775
 JV5775.The horizontal coordinates were established by classical geodetic methods
 JV5775.and adjusted by the National Geodetic Survey in January 1992.
 JV5775
 JV5775.The orthometric height was scaled from a topographic map.
 JV5775
 JV5775.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5775.GEOID18 height accuracy estimate available here.
 JV5775
 JV5775.Click photographs - Photos may exist for this station.
 JV5775
 JV5775.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5775
 JV5775. The following values were computed from the NAD 83(1991) position.
 JV5775
 JV5775;                    North         East     Units Scale Factor Converg.
 JV5775;SPC MD       -   152,618.349   437,817.662   MT  0.99995398   +0 16 27.0
 JV5775;SPC MD       -   500,715.37  1,436,406.78   sFT  0.99995398   +0 16 27.0
 JV5775;UTM  18      - 4,322,459.190   364,716.745   MT  0.99982535   -0 59 05.1
 JV5775
 JV5775!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5775!SPC MD       -   1.00000398  x   0.99995398  =   0.99995796
 JV5775!UTM  18      -   1.00000398  x   0.99982535  =   0.99982932
 JV5775
 JV5775:                Primary Azimuth Mark                     Grid Az
 JV5775:SPC MD       -  BYRD                                     073 09 41.7
 JV5775:UTM  18      -  BYRD                                     074 25 13.8
 JV5775
 JV5775_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6471622459(NAD 83)
 JV5775
 JV5775|---------------------------------------------------------------------|
 JV5775| PID    Reference Object                     Distance      Geod. Az  |
 JV5775|                                                           dddmmss.s |
 JV5775| JV5753 BYRD                                APPROX. 2.9 KM 0732608.7 |
 JV5775| CA9510 HELENA RM                            30.248 METERS 19533     |
 JV5775|---------------------------------------------------------------------|
 JV5775
 JV5775                          SUPERSEDED SURVEY CONTROL
 JV5775
 JV5775  NAD 83(1986)-  39 02 26.63091(N)    076 33 47.41224(W) AD(       ) 3
 JV5775  NAD 27      -  39 02 26.23700(N)    076 33 48.54300(W) AD(       ) 3
 JV5775
 JV5775.Superseded values are not recommended for survey control.
 JV5775
 JV5775.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5775.See file dsdata.pdf to determine how the superseded data were derived.
 JV5775
 JV5775_MARKER: DS = TRIANGULATION STATION DISK
 JV5775_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5775_STAMPING: HELENA 1934
 JV5775_MARK LOGO: CGS
 JV5775_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5775+STABILITY: SURFACE MOTION
 JV5775
 JV5775  HISTORY     - Date     Condition        Report By
 JV5775  HISTORY     - 1934     MONUMENTED       CGS
 JV5775  HISTORY     - 1961     GOOD             CGS
 JV5775  HISTORY     - 1965     GOOD             CGS
 JV5775  HISTORY     - 1988     POOR             MDDNR
 JV5775
 JV5775                          STATION DESCRIPTION
 JV5775
 JV5775'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5775'THE STATION IS LOCATED ON THE W SIDE OF SEVERN RIVER ON ST. HELENA
 JV5775'ISLAND, APPROXIMATELY 50 METERS E OF THE SE CORNER OF THE ONLY
 JV5775'RESIDENCE OCCUPYING THE ISLAND.  THE STATION PROJECTS ABOUT 4
 JV5775'INCHES ABOVE THE SURFACE OF THE GROUND AND IS APPROXIMATELY 20
 JV5775'METERS FROM THE HIGH-WATER LINE.
 JV5775'
 JV5775'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5775'CONCRETE.
 JV5775
 JV5775                          STATION RECOVERY (1961)
 JV5775
 JV5775'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5775'STATION AND REFERENCE MARK RECOVERED IN GOOD CONDITION.  THE
 JV5775'STATION WAS STAMPED HELENA 1934 AND THE REFERENCE MARK WAS STAMPED
 JV5775'HELENA NO 1 1934.  THE ORIGINAL DESCRIPTION IS COMPLETE AND
 JV5775'ADEQUATE WITH THE FOLLOWING EXCEPTION.  THERE ARE MORE HOUSES ON
 JV5775'THE ISLAND AND THE HOUSE REFERRED TO IN THE ORIGINAL DESCRIPTION
 JV5775'IS A BRICK HOUSE PAINTED LIGHT GREEN.
 JV5775
 JV5775                          STATION RECOVERY (1965)
 JV5775
 JV5775'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (JKW)
 JV5775'STATION MARK AND REFERENCE MARK RECOVERED IN GOOD CONDITION.  THE
 JV5775'DESCRIPTION BY J.A.B. IN 1934 AND THE RECOVERY NOTE BY
 JV5775'G.F.W. IN 1961 IS ADEQUATE FOR RECOVERY WITH THE FOLLOWING
 JV5775'ADDITIONS--
 JV5775'
 JV5775'THE STATION IS IN THE LAWN EAST OF A ONE-STORY, WOOD BUILDING
 JV5775'WITH 8 WINDOWS IN EAST SIDE.  IT IS 40.7 FEET NE OF THE SE
 JV5775'CORNER OF WOODEN BUILDING, AND 21.7 FEET E OF THE NE CORNER OF
 JV5775'WOODEN BUILDING, AND FLUSH WITH THE GROUND.
 JV5775
 JV5775                          STATION RECOVERY (1988)
 JV5775
 JV5775'RECOVERY NOTE BY MD DEPT OF NAT RES 1988 (LW)
 JV5775'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6726 ***********************************************************************
 HV6726  DESIGNATION -  HELLEN
 HV6726  PID         -  HV6726
 HV6726  STATE/COUNTY-  MD/CALVERT
 HV6726  COUNTRY     -  US
 HV6726  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6726
 HV6726                         *CURRENT SURVEY CONTROL
 HV6726  ______________________________________________________________________
 HV6726* NAD 83(1991) POSITION- 38 21 13.04897(N) 076 28 41.11533(W)   ADJUSTED
 HV6726* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6726  ______________________________________________________________________
 HV6726  GEOID HEIGHT    -        -34.299 (meters)                     GEOID18
 HV6726  LAPLACE CORR    -         -4.45  (seconds)                    DEFLEC18
 HV6726  HORZ ORDER      -  SECOND
 HV6726
 HV6726.The horizontal coordinates were established by classical geodetic methods
 HV6726.and adjusted by the National Geodetic Survey in January 1992.
 HV6726
 HV6726.The orthometric height was scaled from a topographic map.
 HV6726
 HV6726.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6726.GEOID18 height accuracy estimate available here.
 HV6726
 HV6726.Click photographs - Photos may exist for this station.
 HV6726
 HV6726.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6726
 HV6726. The following values were computed from the NAD 83(1991) position.
 HV6726
 HV6726;                    North         East     Units Scale Factor Converg.
 HV6726;SPC MD       -    76,385.721   445,619.197   MT  0.99999110   +0 19 39.3
 HV6726;SPC MD       -   250,608.82  1,462,002.32   sFT  0.99999110   +0 19 39.3
 HV6726;UTM  18      - 4,246,085.425   370,850.163   MT  0.99980542   -0 55 02.3
 HV6726
 HV6726!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6726!SPC MD       -   1.00000511  x   0.99999110  =   0.99999621
 HV6726!UTM  18      -   1.00000511  x   0.99980542  =   0.99981053
 HV6726
 HV6726:                Primary Azimuth Mark                     Grid Az
 HV6726:SPC MD       -  STUMP                                    333 58 24.9
 HV6726:UTM  18      -  STUMP                                    335 13 06.5
 HV6726
 HV6726_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7085046085(NAD 83)
 HV6726
 HV6726|---------------------------------------------------------------------|
 HV6726| PID    Reference Object                     Distance      Geod. Az  |
 HV6726|                                                           dddmmss.s |
 HV6726| CX2863 HELLEN RM                            12.450 METERS 07514     |
 HV6726| HV6732 STUMP                               APPROX. 1.4 KM 3341804.2 |
 HV6726|---------------------------------------------------------------------|
 HV6726
 HV6726                          SUPERSEDED SURVEY CONTROL
 HV6726
 HV6726  NAD 83(1986)-  38 21 13.04866(N)    076 28 41.12957(W) AD(       ) 2
 HV6726  NAD 27      -  38 21 12.59800(N)    076 28 42.29000(W) AD(       ) 2
 HV6726  USSD        -  38 21 12.94900(N)    076 28 42.03000(W) AD(       ) 3
 HV6726
 HV6726.Superseded values are not recommended for survey control.
 HV6726
 HV6726.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6726.See file dsdata.pdf to determine how the superseded data were derived.
 HV6726
 HV6726_MARKER: K = CLAY TILE PIPE
 HV6726_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6726_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6726
 HV6726  HISTORY     - Date     Condition        Report By
 HV6726  HISTORY     - 1907     MONUMENTED       MDSFC
 HV6726  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6726
 HV6726                          STATION DESCRIPTION
 HV6726
 HV6726'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (OWF)
 HV6726'STATION IS ON THE NE SHORE OF PATUXENT RIVER, ON SE SIDE OF MOUTH
 HV6726'OF HELLEN CREEK, AT HIGH-WATER MARK ON EDGE OF GRASS AND BUSHES,
 HV6726'ABOUT 16 YARDS WSW OF BLUFF 15 FEET HIGH, ABOUT 40 YARDS NNW OF
 HV6726'BLUFF AT EDGE OF WATER, AND ABOUT 80 METERS BELOW A WATCH
 HV6726'HOUSE.  STATION MARKED BY NOZZLE OF PINT BOTTLE 20 INCHES BELOW
 HV6726'SURFACE OF GROUND.  ABOVE THIS IS A 4-INCH TILE PIPE FILLED WITH
 HV6726'AND SET IN CEMENT, ITS TOP 4 INCHES ABOVE THE GROUND.  IN 1910
 HV6726'THESE TWO MARKS REPORTED TO HAVE BEEN WASHED AWAY.  REFERENCE MARK
 HV6726'IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6726'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6726'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6726'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 HV6726'IS 12.45 METERS (40.8 FEET), FROM STATION IN AZIMUTH 255 DEG
 HV6726'14 MIN.  DISTANCES AND AZIMUTHS FROM THE STATION TO OTHER POINTS
 HV6726'OF REFERENCE ARE AS FOLLOWS--NEAR END OF PEAK OF ROOF OF
 HV6726'MARBURGER HOUSE, 1-1/2 MILES, 4 DEG 12 MIN.  MOUTH OF CUCKOLD
 HV6726'CREEK, 1-1/2 MILES, 55 DEG 18 MIN.  CHIMNEY OF PETERSON
 HV6726'HOUSE, 3 MILES, 149 DEG 32 MIN.  LEFT CHIMNEY OF BARRETT
 HV6726'HOUSE, 3/4 MILE, 163 DEG 12 MIN.  7 1/2-INCH PERSIMMON TREE,
 HV6726'31.54 METERS (103.5 FEET), 183 DEG 14 MIN.  E CHIMNEY OF
 HV6726'LARGE DWELLING HOUSE OF JESPIA COSTER, 170 METERS, 192 DEG 47
 HV6726'MIN.  NAIL IN BLAZE IN TREE, 14.74 METERS (48.4 FEET) 254 DEG
 HV6726'20 MIN.  6-INCH SASSAFRAS TREE, 14.67 METERS (48.1 FEET), 253
 HV6726'DEG 36 MIN.
 HV6726
 HV6726                          STATION RECOVERY (1942)
 HV6726
 HV6726'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6726'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED FOR
 HV6726'BY TWO MEN FOR ONE HOUR, BUT NO TRACE OF IT COULD BE FOUND.
 HV6726'
 HV6726'MR. H. ELLIS, STATED THE BANK HAS WASHED ABOUT 50 TO 60 FEET SINCE
 HV6726'1908 AND A GREAT PORTION OF THE MOUTH OF THE CREEK HAS WASHED AWAY
 HV6726'AND CHANGED FROM THE OLD LOCATION.  MR. JESSIE COSTER STATED THE
 HV6726'MOUTH OF THE CREEK HAS WASHED ABOUT 200 YARDS IN THE PAST 50
 HV6726'YEARS, AND THAT THE MOUTH OF HELLEN CREEK WAS ABOUT 50 YARDS AND
 HV6726'TODAY IT HAS WIDENED OUT TO OVER 200 YARDS.
 HV6726'
 HV6726'IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED AS DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5735 ***********************************************************************
 HV5735  DESIGNATION -  HENDERSON
 HV5735  PID         -  HV5735
 HV5735  STATE/COUNTY-  MD/TALBOT
 HV5735  COUNTRY     -  US
 HV5735  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5735
 HV5735                         *CURRENT SURVEY CONTROL
 HV5735  ______________________________________________________________________
 HV5735* NAD 83(1991) POSITION- 38 47 24.80692(N) 076 07 41.43960(W)   ADJUSTED
 HV5735* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5735  ______________________________________________________________________
 HV5735  GEOID HEIGHT    -        -34.539 (meters)                     GEOID18
 HV5735  LAPLACE CORR    -         -3.89  (seconds)                    DEFLEC18
 HV5735  HORZ ORDER      -  THIRD
 HV5735
 HV5735.The horizontal coordinates were established by classical geodetic methods
 HV5735.and adjusted by the National Geodetic Survey in January 1992.
 HV5735
 HV5735.The orthometric height was scaled from a topographic map.
 HV5735
 HV5735.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5735.GEOID18 height accuracy estimate available here.
 HV5735
 HV5735.Click photographs - Photos may exist for this station.
 HV5735
 HV5735.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5735
 HV5735. The following values were computed from the NAD 83(1991) position.
 HV5735
 HV5735;                    North         East     Units Scale Factor Converg.
 HV5735;SPC MD       -   125,081.084   475,740.465   MT  0.99995096   +0 32 49.9
 HV5735;SPC MD       -   410,370.19  1,560,825.18   sFT  0.99995096   +0 32 49.9
 HV5735;UTM  18      - 4,294,102.309   402,019.934   MT  0.99971821   -0 42 24.6
 HV5735
 HV5735!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5735!SPC MD       -   1.00000530  x   0.99995096  =   0.99995626
 HV5735!UTM  18      -   1.00000530  x   0.99971821  =   0.99972351
 HV5735
 HV5735:                Primary Azimuth Mark                     Grid Az
 HV5735:SPC MD       -  BETHEL                                   245 16 27.0
 HV5735:UTM  18      -  BETHEL                                   246 31 41.5
 HV5735
 HV5735_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0201994102(NAD 83)
 HV5735
 HV5735|---------------------------------------------------------------------|
 HV5735| PID    Reference Object                     Distance      Geod. Az  |
 HV5735|                                                           dddmmss.s |
 HV5735| HV5736 EASTON                              444.630 METERS 0365248.1 |
 HV5735| HV5747 BETHEL                              APPROX. 0.8 KM 2454916.9 |
 HV5735| HV5669 LOWNDES                             362.671 METERS 32028     |
 HV5735| HV5734 DRAW                                APPROX. 0.6 KM 3583640.0 |
 HV5735|---------------------------------------------------------------------|
 HV5735
 HV5735                          SUPERSEDED SURVEY CONTROL
 HV5735
 HV5735  NAD 83(1986)-  38 47 24.80247(N)    076 07 41.45376(W) AD(       ) 3
 HV5735  NAD 27      -  38 47 24.32200(N)    076 07 42.65400(W) AD(       ) 3
 HV5735  USSD        -  38 47 24.70500(N)    076 07 42.41600(W) AD(       ) 3
 HV5735
 HV5735.Superseded values are not recommended for survey control.
 HV5735
 HV5735.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5735.See file dsdata.pdf to determine how the superseded data were derived.
 HV5735
 HV5735_MARKER: H = DRILL HOLE
 HV5735_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5735_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5735
 HV5735  HISTORY     - Date     Condition        Report By
 HV5735  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5735  HISTORY     - 1940     GOOD             CGS
 HV5735  HISTORY     - 1961     GOOD             CGS
 HV5735  HISTORY     - 1973     POOR             MDDNR
 HV5735
 HV5735                          STATION DESCRIPTION
 HV5735
 HV5735'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5735'STATION IS ON THE SOUTHEASTERN SHORE OF MILES RIVER, ON POINT
 HV5735'ABOUT 1/4 MILE SW OF MILES RIVER BRIDGE, ON A HARD MARSH POINT,
 HV5735'ABOUT 1 FOOT ABOVE HIGH WATER, 6 YARDS SE OF SHORE, 8 YARDS S OF
 HV5735'SHORE, 13 YARDS E OF SHORE, 23 YARDS NNE OF POINT OF HIGHER LAND,
 HV5735'AND 15 YARDS N OF TREES ALONG BANK.  STATION MARK IS A HOLE IN THE
 HV5735'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5735'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5735'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5735'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH
 HV5735'DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW THE BASE OF THE
 HV5735'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5735'ARE AS FOLLOWS--NAIL IN BLAZE IN 5-INCH LOCUST TREE, 13.76 METERS
 HV5735'(45.1 FEET), S 12 DEG 33 MIN W.  NAIL IN BLAZE IN 7-INCH
 HV5735'WILD-CHERRY TREE, 21.71 METERS (71.2 FEET), S 42 DEG 0 MIN W. LEFT
 HV5735'CORNER OF SECOND STORY OF LOWNDESS HOUSE, 5/8 MILE, N 88 DEG 16
 HV5735'MIN W.  PEAK OF NEAR GABLE OF HOUSE, 3/8 MILE, N 73 DEG 16 MIN W.
 HV5735'WINDMILL AT THE ANCHORAGE, 3/8 MILE, N 12 DEG 19 MIN W. RIGHT
 HV5735'CORNER OF OLD EPISCOPAL CHURCH TOWER, 3/8 MILE, N 2 DEG 4 MIN W.
 HV5735'LEFT CORNER OF GOLDSBOROUGHS HOUSE, 5/8 MILE, N 15 DEG 44 MIN E.
 HV5735'HENDERSONS WINDMILL, 1/8 MILE, N 60 DEG 37 MIN E.  NAIL IN BLAZE
 HV5735'IN 5-INCH WILD-CHERRY TREE, 16.25 METERS (53.3 FEET), S 35 DEG 53
 HV5735'MIN E.
 HV5735
 HV5735                          STATION RECOVERY (1940)
 HV5735
 HV5735'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5735'STATION IS 1/4 MILE SW OF MILES RIVER BRIDGE ON THE SOUTHEASTERN
 HV5735'SHORE OF MILES RIVER.  STATION MARK RECOVERED AS DESCRIBED.
 HV5735'
 HV5735'TOP OF MARK PROJECTS 3 INCHES ABOVE SURFACE OF THE GROUND AND IS
 HV5735'IN GOOD CONDITION.
 HV5735'
 HV5735'REFERENCE TREES NOT FOUND.
 HV5735
 HV5735                          STATION RECOVERY (1961)
 HV5735
 HV5735'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5735'STATION RECOVERED IN FAIR CONDITION.  THE TOP IS CRACKED BUT THE
 HV5735'MONUMENT IS FIRM.  ALL OF THE REFERENCE TREES HAVE BEEN DESTROYED.
 HV5735'STATION IS 10 FT. FROM THE MHWL, PROJECTS 3 INCHES AND IS
 HV5735'SURROUNDED BY SEVERAL WOODEN STAKES AND IS EASILY FOUND.
 HV5735
 HV5735                          STATION RECOVERY (1973)
 HV5735
 HV5735'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV5735'STATION WAS RECOVERED AS DESCRIBED WITH THE FOLLOWING
 HV5735'EXCEPTIONS--STATION MARK WAS FOUND IN POOR CONDITION, TOP 2
 HV5735'INCHES OF MONUMENT COMPLETELY GONE.  WITNESS POST AND SIGN PLACED
 HV5735'6 INCHES W OF STATION.  STATION MARK IS 58 FEET NLY OF NLY OF 2
 HV5735'STUMPS AT BOTTOM OF BANK, 97 FEET NLY OF CORNER OF BULKHEAD AND 78
 HV5735'FEET WLY OF LARGEST OAK TREE ON TOP OF BANK ON PROPERTY OF
 HV5735'MILLARD T. CHARLTON.
 HV5735'
 HV5735'STATION MARK NEEDS TO BE REPLACED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6956 ***********************************************************************
 JV6956  DESIGNATION -  HENRY
 JV6956  PID         -  JV6956
 JV6956  STATE/COUNTY-  MD/C OF BALTIMORE
 JV6956  COUNTRY     -  US
 JV6956  USGS QUAD   -  BALTIMORE EAST (2016)
 JV6956
 JV6956                         *CURRENT SURVEY CONTROL
 JV6956  ______________________________________________________________________
 JV6956* NAD 83(2011) POSITION- 39 15 48.96553(N) 076 33 53.93775(W)   ADJUSTED
 JV6956* NAD 83(2011) ELLIP HT-   -29.155 (meters)        (06/27/12)   ADJUSTED
 JV6956* NAD 83(2011) EPOCH   -  2010.00
 JV6956* NAVD 88 ORTHO HEIGHT -     3.715 (meters)       12.19  (feet) ADJUSTED
 JV6956  ______________________________________________________________________
 JV6956  GEOID HEIGHT    -        -32.884 (meters)                     GEOID18
 JV6956  NAD 83(2011) X  -  1,148,894.952 (meters)                     COMP
 JV6956  NAD 83(2011) Y  - -4,809,515.678 (meters)                     COMP
 JV6956  NAD 83(2011) Z  -  4,014,998.925 (meters)                     COMP
 JV6956  LAPLACE CORR    -         -3.96  (seconds)                    DEFLEC18
 JV6956  DYNAMIC HEIGHT  -          3.713 (meters)       12.18  (feet) COMP
 JV6956  MODELED GRAVITY -    980,098.5   (mgal)                       NAVD 88
 JV6956
 JV6956  VERT ORDER      -  SECOND    CLASS I
 JV6956
 JV6956  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6956  Standards:
 JV6956         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6956            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6956  -------------------------------------------------------------------
 JV6956  NETWORK    0.82   1.14           0.37   0.29   0.58     -0.03349839
 JV6956  -------------------------------------------------------------------
 JV6956  Click here for local accuracies and other accuracy information.
 JV6956
 JV6956.The horizontal coordinates were established by GPS observations
 JV6956.and adjusted by the National Geodetic Survey in June 2012.
 JV6956
 JV6956.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6956.been affixed to the stable North American tectonic plate. See 
 JV6956.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6956
 JV6956.The horizontal coordinates are valid at the epoch date displayed above
 JV6956.which is a decimal equivalence of Year/Month/Day.
 JV6956
 JV6956.The orthometric height was determined by differential leveling and
 JV6956.adjusted by the NATIONAL GEODETIC SURVEY
 JV6956.in June 1995.
 JV6956
 JV6956.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6956.GEOID18 height accuracy estimate available here.
 JV6956
 JV6956.Click photographs - Photos may exist for this station.
 JV6956
 JV6956.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6956
 JV6956.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6956
 JV6956.The ellipsoidal height was determined by GPS observations
 JV6956.and is referenced to NAD 83.
 JV6956
 JV6956.The dynamic height is computed by dividing the NAVD 88
 JV6956.geopotential number by the normal gravity value computed on the
 JV6956.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6956.degrees latitude (g = 980.6199 gals.).
 JV6956
 JV6956.The modeled gravity was interpolated from observed gravity values.
 JV6956
 JV6956. The following values were computed from the NAD 83(2011) position.
 JV6956
 JV6956;                    North         East     Units Scale Factor Converg.
 JV6956;SPC MD       -   177,359.023   437,542.591   MT  0.99997270   +0 16 22.9
 JV6956;SPC MD       -   581,885.39  1,435,504.32   sFT  0.99997270   +0 16 22.9
 JV6956;UTM  18      - 4,347,196.530   364,986.288   MT  0.99982445   -0 59 26.2
 JV6956
 JV6956!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6956!SPC MD       -   1.00000457  x   0.99997270  =   0.99997727
 JV6956!UTM  18      -   1.00000457  x   0.99982445  =   0.99982902
 JV6956
 JV6956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6498647196(NAD 83)
 JV6956
 JV6956                          SUPERSEDED SURVEY CONTROL
 JV6956
 JV6956  NAD 83(2007)-  39 15 48.96574(N)    076 33 53.93849(W) AD(2002.00) 0
 JV6956  ELLIP H (02/10/07)  -29.141  (m)                       GP(2002.00)    
 JV6956  ELLIP H (08/30/02)  -29.129  (m)                       GP(       ) 4 2
 JV6956  NAD 83(1991)-  39 15 48.96559(N)    076 33 53.93794(W) AD(       ) 1
 JV6956  ELLIP H (09/15/92)  -29.224  (m)                       GP(       ) 4 1
 JV6956  NAVD 88               3.72   (m)           12.2    (f) LEVELING    3  
 JV6956  NGVD 29 (09/15/92)    4.0    (m)  GEOID90  model used  GPS OBS        
 JV6956
 JV6956.Superseded values are not recommended for survey control.
 JV6956
 JV6956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6956.See file dsdata.pdf to determine how the superseded data were derived.
 JV6956
 JV6956_MARKER: DD = SURVEY DISK
 JV6956_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6956_STAMPING: HENRY 1991
 JV6956_MARK LOGO: MDSHA
 JV6956_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6956_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6956+STABILITY: SURFACE MOTION
 JV6956_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6956+SATELLITE: SATELLITE OBSERVATIONS - November 06, 2014
 JV6956
 JV6956  HISTORY     - Date     Condition        Report By
 JV6956  HISTORY     - 1991     MONUMENTED       MDSHA
 JV6956  HISTORY     - 19961219 GOOD             DMW
 JV6956  HISTORY     - 19990402 GOOD             AMTHOM
 JV6956  HISTORY     - 20010410 GOOD             DMW
 JV6956  HISTORY     - 20100121 GOOD             JMTMD
 JV6956  HISTORY     - 20141106 GOOD             RKK
 JV6956
 JV6956                          STATION DESCRIPTION
 JV6956
 JV6956'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6956'THE MARKER IS LOCATED ABOUT 2.9 MI (4.7 KM) NORTHWEST OF DUNDULK, 7.7
 JV6956'MI (12.4 KM) SOUTH-SOUTHWEST OF PARKVILLE AND ALONG KEITH AVENUE.  IT
 JV6956'IS ON ROAD RIGHT-OF-WAY.  TO REACH THE MARKER FROM A POINT WHERE
 JV6956'INTERSTATE HIGHWAY 95 AND INTERSTATE HIGHWAY 895 SPLIT, GO SOUTH ON
 JV6956'INTERSTATE HIGHWAY 95 FOR 4.55 MI (7.32 KM) TO EXIT 56.  LEAVE
 JV6956'INTERSTATE HIGHWAY 95 AND TRAVEL SOUTH AND EAST ON THE WINDING EXIT
 JV6956'RAMP 0.65 MI (1.05 KM) TO A T INTERSECTION.  TURN LEFT AND GO NORTH
 JV6956'ON KEITH AVENUE 0.1 MI (0.2 KM) TO LELAND AVENUE AND THE MARKER ON
 JV6956'THE LEFT.  THE POINT IS MARKED WITH A MARYLAND STATE HIGHWAY
 JV6956'ADMINISTRATION SURVEY DISK SET IN A 0.8 FT (0.2 M) ROUND CONCRETE
 JV6956'MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 50.0
 JV6956'FT (15.2 M) EAST OF THE CENTER OF LELAND AVENUE, 71.5 FT (21.8 M)
 JV6956'NORTH OF THE CENTER OF KEITH AVENUE AND 34.3 FT (10.5 M) NORTHWEST OF
 JV6956'A OVERHEAD LIGHTPOLE DESIGNATED KEITH AVENUE 31.
 JV6956
 JV6956                          STATION RECOVERY (1996)
 JV6956
 JV6956'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1996 (DMM)
 JV6956'RECOVERED AS DESCRIBED.
 JV6956
 JV6956                          STATION RECOVERY (1999)
 JV6956
 JV6956'RECOVERY NOTE BY A MORTON THOMAS AND ASSOCIATES 1999
 JV6956'RECOVERED AS DESCRIBED.
 JV6956
 JV6956                          STATION RECOVERY (2001)
 JV6956
 JV6956'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV6956'RECOVERED IN GOOD CONDITION.
 JV6956
 JV6956                          STATION RECOVERY (2010)
 JV6956
 JV6956'RECOVERY NOTE BY JMT ENGINEERING 2010 (JLS)
 JV6956'FOUND - GPS-NETWORK CHECK
 JV6956'N -0.03', E -0.01', EL. +0.3'
 JV6956
 JV6956                          STATION RECOVERY (2014)
 JV6956
 JV6956'RECOVERY NOTE BY RK&K 2014 (MC)
 JV6956'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5956 ***********************************************************************
 HV5956  DESIGNATION -  HENRY MSFC 1910
 HV5956  PID         -  HV5956
 HV5956  STATE/COUNTY-  MD/DORCHESTER
 HV5956  COUNTRY     -  US
 HV5956  USGS QUAD   -  CHURCH CREEK (2016)
 HV5956
 HV5956                         *CURRENT SURVEY CONTROL
 HV5956  ______________________________________________________________________
 HV5956* NAD 83(1991) POSITION- 38 33 06.72458(N) 076 14 58.17006(W)   ADJUSTED
 HV5956* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5956  ______________________________________________________________________
 HV5956  GEOID HEIGHT    -        -34.666 (meters)                     GEOID18
 HV5956  LAPLACE CORR    -         -5.30  (seconds)                    DEFLEC18
 HV5956  HORZ ORDER      -  THIRD
 HV5956
 HV5956.The horizontal coordinates were established by classical geodetic methods
 HV5956.and adjusted by the National Geodetic Survey in January 1992.
 HV5956
 HV5956.The orthometric height was scaled from a topographic map.
 HV5956
 HV5956.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5956.GEOID18 height accuracy estimate available here.
 HV5956
 HV5956.Click photographs - Photos may exist for this station.
 HV5956
 HV5956.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5956
 HV5956. The following values were computed from the NAD 83(1991) position.
 HV5956
 HV5956;                    North         East     Units Scale Factor Converg.
 HV5956;SPC MD       -    98,529.734   465,418.962   MT  0.99996574   +0 28 15.8
 HV5956;SPC MD       -   323,259.64  1,526,962.04   sFT  0.99996574   +0 28 15.8
 HV5956;UTM  18      - 4,267,788.742   391,123.213   MT  0.99974598   -0 46 43.6
 HV5956
 HV5956!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5956!SPC MD       -   1.00000548  x   0.99996574  =   0.99997122
 HV5956!UTM  18      -   1.00000548  x   0.99974598  =   0.99975145
 HV5956
 HV5956:                Primary Azimuth Mark                     Grid Az
 HV5956:SPC MD       -  MITCHELL MSFC 1910                       002 39 53.6
 HV5956:UTM  18      -  MITCHELL MSFC 1910                       003 54 53.0
 HV5956
 HV5956_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9112367788(NAD 83)
 HV5956
 HV5956|---------------------------------------------------------------------|
 HV5956| PID    Reference Object                     Distance      Geod. Az  |
 HV5956|                                                           dddmmss.s |
 HV5956| HV5911 MITCHELL MSFC 1910                  467.878 METERS 0030809.4 |
 HV5956| HV5950 BAYLY MSFC 1910                     387.727 METERS 08846     |
 HV5956| HV5945 CARRIE MSFC 1910                    482.649 METERS 1292201.5 |
 HV5956| HV5894 JENIFER MSFC 1910                   252.538 METERS 17854     |
 HV5956|---------------------------------------------------------------------|
 HV5956
 HV5956                          SUPERSEDED SURVEY CONTROL
 HV5956
 HV5956  NAD 83(1986)-  38 33 06.72237(N)    076 14 58.18549(W) AD(       ) 3
 HV5956  NAD 27      -  38 33 06.31400(N)    076 14 59.37400(W) AD(       ) 3
 HV5956  USSD        -  38 33 06.69800(N)    076 14 59.15800(W) AD(       ) 3
 HV5956
 HV5956.Superseded values are not recommended for survey control.
 HV5956
 HV5956.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5956.See file dsdata.pdf to determine how the superseded data were derived.
 HV5956
 HV5956_MARKER: Z = SEE DESCRIPTION
 HV5956_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5956_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5956+STABILITY: SURFACE MOTION
 HV5956
 HV5956  HISTORY     - Date     Condition        Report By
 HV5956  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5956  HISTORY     - 1941     MARK NOT FOUND   CGS
 HV5956
 HV5956                          STATION DESCRIPTION
 HV5956
 HV5956'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5956'ON THE WESTERN SHORE OF HUDSON CREEK, AT S SIDE OF ENTRANCE TO
 HV5956'COVE ABOUT 1 MILE N OF CASONS POINT, ABOUT 2 FEET ABOVE HIGH
 HV5956'WATER, 5 YARDS S OF SHORE, 5 YARDS NW OF SHORE, 10 YARDS W OF
 HV5956'EXTREME END OF POINT, AND 34 YARDS N OF WIRE FENCE AT SHORE.
 HV5956'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5956'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5956'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5956'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE
 HV5956'MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP
 HV5956'2 INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS
 HV5956'TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY ON RIGHT
 HV5956'END OF HOUSE, 1/8 MILE, S 32 DEG 28 MIN W.  CHIMNEY ON LEFT END OF
 HV5956'HOUSE, 1/4 MILE, N 16 DEG 25 MIN W. TANGENT TO LEFT END OF ROSS
 HV5956'WHARF, 7/8 MILE, N 8 DEG 36 MIN E.  CHIMNEY IN CENTER OF SMALL
 HV5956'HOUSE, 7/8 MILE, N 20 DEG 31 MIN E.  CHIMNEY ON LEFT END OF HOUSE,
 HV5956'3/8 MILE, N 44 DEG 12 MIN E. NEAR PEAK OF BARN, 7/8 MILE, N 59
 HV5956'DEG 37 MIN E.  CHIMNEY ON NEAR END OF HOUSE, 5/8 MILE, S 80 DEG 8
 HV5956'MIN E.
 HV5956
 HV5956                          STATION RECOVERY (1941)
 HV5956
 HV5956'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HV5956'SEARCHED FOR, BUT NOT FOUND.  BELIEVED WASHED OUT.
 HV5956'
 HV5956'RECOMMENDED THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5964 ***********************************************************************
 JV5964  DESIGNATION -  HENSE
 JV5964  PID         -  JV5964
 JV5964  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5964  COUNTRY     -  US
 JV5964  USGS QUAD   -  BELTSVILLE (2016)
 JV5964
 JV5964                         *CURRENT SURVEY CONTROL
 JV5964  ______________________________________________________________________
 JV5964* NAD 83(1991) POSITION- 39 02 19.42974(N) 076 55 21.97017(W)   ADJUSTED
 JV5964* NAVD 88 ORTHO HEIGHT -    75.    (meters)      246.    (feet) SCALED
 JV5964  ______________________________________________________________________
 JV5964  GEOID HEIGHT    -        -32.123 (meters)                     GEOID18
 JV5964  LAPLACE CORR    -         -3.99  (seconds)                    DEFLEC18
 JV5964  HORZ ORDER      -  SECOND
 JV5964
 JV5964.The horizontal coordinates were established by classical geodetic methods
 JV5964.and adjusted by the National Geodetic Survey in January 1992.
 JV5964
 JV5964.The orthometric height was scaled from a topographic map.
 JV5964
 JV5964.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5964.GEOID18 height accuracy estimate available here.
 JV5964
 JV5964.Click photographs - Photos may exist for this station.
 JV5964
 JV5964.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5964
 JV5964. The following values were computed from the NAD 83(1991) position.
 JV5964
 JV5964;                    North         East     Units Scale Factor Converg.
 JV5964;SPC MD       -   152,308.532   406,686.243   MT  0.99995388   +0 02 54.5
 JV5964;SPC MD       -   499,698.91  1,334,269.78   sFT  0.99995388   +0 02 54.5
 JV5964;UTM  18      - 4,322,833.631   333,588.301   MT  0.99994100   -1 12 40.8
 JV5964
 JV5964!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5964!SPC MD       -   0.99999331  x   0.99995388  =   0.99994719
 JV5964!UTM  18      -   0.99999331  x   0.99994100  =   0.99993431
 JV5964
 JV5964:                Primary Azimuth Mark                     Grid Az
 JV5964:SPC MD       -  GREENBELT WSSD                           132 53 17.1
 JV5964:UTM  18      -  GREENBELT WSSD                           134 08 52.4
 JV5964
 JV5964_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3358822833(NAD 83)
 JV5964
 JV5964|---------------------------------------------------------------------|
 JV5964| PID    Reference Object                     Distance      Geod. Az  |
 JV5964|                                                           dddmmss.s |
 JV5964| JV5937 BELTSVILLE DA RSCH CTR N TANK       APPROX. 4.1 KM 0940138.1 |
 JV5964| JV5868 BELTSVILLE DA RSCH CTR S TANK       APPROX. 5.9 KM 1141337.8 |
 JV5964| CA9513 HENSE RM 3                            4.977 METERS 12556     |
 JV5964| JV5924 GREENBELT WSSD                      APPROX. 4.5 KM 1325611.6 |
 JV5964| JV5963 BELTSVILLE DA PLANT ADM DOME        APPROX. 1.4 KM 1821144.4 |
 JV5964| CA9511 HENSE RM 1                           23.660 METERS 23012     |
 JV5964| CA9512 HENSE RM 2                           25.094 METERS 30956     |
 JV5964| CA9514 HENSE RM 4                           14.399 METERS 34148     |
 JV5964|---------------------------------------------------------------------|
 JV5964
 JV5964                          SUPERSEDED SURVEY CONTROL
 JV5964
 JV5964  NAD 83(1986)-  39 02 19.42845(N)    076 55 21.98056(W) AD(       ) 2
 JV5964  NAD 27      -  39 02 19.03524(N)    076 55 23.07385(W) AD(       ) 2
 JV5964
 JV5964.Superseded values are not recommended for survey control.
 JV5964
 JV5964.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5964.See file dsdata.pdf to determine how the superseded data were derived.
 JV5964
 JV5964_MARKER: DS = TRIANGULATION STATION DISK
 JV5964_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5964_STAMPING: HENSE 1957
 JV5964_MARK LOGO: CGS
 JV5964_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5964+STABILITY: SURFACE MOTION
 JV5964
 JV5964  HISTORY     - Date     Condition        Report By
 JV5964  HISTORY     - 1957     MONUMENTED       CGS
 JV5964  HISTORY     - 1971     GOOD             NGS
 JV5964
 JV5964                          STATION DESCRIPTION
 JV5964
 JV5964'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5964'STATION IS LOCATED ABOUT 1 MILE WEST OF BELTSVILLE ON A HIGH
 JV5964'RIDGE ALONG MONTGOMERY ROAD.  STATION IS 75 FEET NORTH OF THE
 JV5964'APPROXIMATE CENTER OF DRIVEWAY, 48 FEET SOUTH SOUTHWEST OF FIRE
 JV5964'HYDRANT, 40 FEET WEST OF THE APPROXIMATE CENTER OF ROAD AND 20
 JV5964'FEET NORTHWEST OF A 14 INCH TREE.  THE MARK IS FLUSH WITH THE
 JV5964'GROUND AND THE DISK IS STAMPED HENSE 1957.
 JV5964'
 JV5964'REFERENCE MARK NO. 1 IS 75 FEET NORTH OF THE APPROXIMATE CENTER
 JV5964'OF DRIVEWAY.  THE MARK IS FLUSH WITH THE GROUND AND THE DISK IS
 JV5964'STAMPED HENSE NO 1 1957.
 JV5964'
 JV5964'REFERENCE MARK NO. 2 IS 5 FEET SOUTH OF AN 8 INCH TREE.  THE MARK
 JV5964'IS FLUSH WITH THE GROUND AND THE DISK IS STAMPED HENSE NO 2 1957.
 JV5964'
 JV5964'TO REACH STATION FROM THE RAILROAD DEPOT IN BELTSVILLE GO SOUTH
 JV5964'ON U.S. HIGHWAY 1 FOR 0.7 MILE TO A SIDE ROAD RIGHT.  TURN RIGHT
 JV5964'ON MONTGOMERY ROAD AND GO 0.75 MILE TO VACANT LOT ON LEFT AND
 JV5964'STATION AS DESCRIBED.
 JV5964'
 JV5964'NO AVAILABLE LOCATION FOR A V.G. AZIMUTH MARK.
 JV5964'
 JV5964'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5964
 JV5964                          STATION RECOVERY (1971)
 JV5964
 JV5964'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS)
 JV5964'THE STATION AND REFERENCE MARK NO. 2 WERE RECOVERED AND FOUND IN
 JV5964'GOOD CONDITION.  REFERENCE MARK NO. 1 HAD BEEN PREVIOUSLY DESTROYED
 JV5964'WHEN A NEW HOUSE WAS BUILT OVER ITS SITE.  REFERENCE MARK NO. 2
 JV5964'WAS IN THE WAY OF THE CONSTRUCTION OF A NEW HOUSE, IT WAS
 JV5964'DESTROYED AFTER NEW REFERENCE MARKS WERE ESTABLISHED.  THERE WAS
 JV5964'NO AZIMUTH MARK ESTABLISHED FOR THIS STATION AND THERE IS NO
 JV5964'SUITABLE LOCATION THAT ALLOWS GROUND TO GROUND VISIBILITY TO
 JV5964'ESTABLISH ONE.  THE GREENBELT WATER TANK LISTED IN THE 1957
 JV5964'DESCRIPTION WAS NOT VISIBLE FROM THE GROUND.
 JV5964'
 JV5964'STATION IS LOCATED ABOUT 1.0 MILE WEST OF BELTSVILLE ON A HIGH
 JV5964'RIDGE ALONG MONTGOMERY ROAD.  IT IS 41 FEET WEST OF THE CENTERLINE
 JV5964'OF MONTGOMERY ROAD, 50.5 FEET NORTH OF THE SOUTH END OF A RAIL
 JV5964'FENCE, 48.5 FEET SOUTH-SOUTHWEST OF THE TOP NUT ON A FIRE HYDRANT,
 JV5964'27 FEET SOUTH OF THE CENTERLINE OF A MACADAM DRIVEWAY TO HOUSE
 JV5964'NO. 11106, 12 FEET SOUTHWEST OF THE TOP OF A GAS VALVE COVER,
 JV5964'6.0 FEET EAST OF A RAIL FENCE, AND IN THE FRONT OF AND EAST OF
 JV5964'HOUSE NO. 11106, ABOUT OPPOSITE AND EAST OF THE SOUTH EDGE OF
 JV5964'A LARGE CENTER PICTURE WINDOW.  THE MARK IS ON COUNTY ROAD
 JV5964'RIGHT-OF-WAY PROPERTY, SET 6-INCHES BELOW THE SURFACE OF
 JV5964'THE GROUND AND THE DISK IS STAMPED HENSE 1957.
 JV5964'
 JV5964'REFERENCE MARK NO. 3 IS ON COUNTY ROAD RIGHT-OF-WAY PROPERTY,
 JV5964'59 FEET SOUTH OF A FIRE HYDRANT, 38 FEET SOUTH OF THE CENTERLINE
 JV5964'OF A DRIVEWAY, 31 FEET WEST OF THE CENTERLINE OF ROAD, 17 FEET
 JV5964'EAST OF A YARD RAIL FENCE, AND 4 FEET NORTHWEST OF A 24-INCH OAK
 JV5964'TREE.  IT IS SET FLUSH WITH SURFACE OF THE GROUND, AND
 JV5964'THE DISK IS STAMPED HENSE 1957 NO 3 1971.
 JV5964'
 JV5964'REFERENCE MARK NO. 4 IS ON COUNTY ROAD RIGHT-OF-WAY PROPERTY,
 JV5964'43.5 FEET WEST OF THE CENTERLINE OF COUNTY ROAD, 20 FEET NORTH OF
 JV5964'THE CENTERLINE OF DRIVEWAY TO HOUSE 11106, 17.8 FEET WEST OF THE
 JV5964'TOP CENTER OF A FIRE HYDRANT, AND 2 FEET EAST OF UTILITY POLE
 JV5964'NO. PEP 871300.  IT IS SET FLUSH WITH SURFACE OF THE GROUND,
 JV5964'AND THE DISK IS STAMPED HENSE 1957 NO 4 1971.
 JV5964'
 JV5964'THERE WAS NO AZIMUTH MARK ESTABLISHED FOR THIS STATION, AS NO
 JV5964'SUITABLE LOCATION IS AVAILABLE.
 JV5964'
 JV5964'TO REACH FROM A POINT ON U.S. HIGHWAY NO. 1, JUST WEST OF THE
 JV5964'RAILROAD DEPOT IN BELTSVILLE.  GO SOUTH ON U.S. HIGHWAY NO. 1 FOR
 JV5964'0.7 MILE TO A ROAD RIGHT, JUST NORTH OF A SHOPPING CENTER, TURN
 JV5964'RIGHT AND GO NORTHWEST AND NORTH ON MONTGOMERY ROAD FOR 0.75 MILE
 JV5964'TO HOUSE NO. 11106 ON THE LEFT AND STATION ON THE LEFT, WEST SIDE
 JV5964'OF ROAD, AS DESCRIBED.
 JV5964'
 JV5964'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV5964'1.0 MILE WEST OF BELTSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7588 ***********************************************************************
 HV7588  DESIGNATION -  HENSON VALLEY CHRISTIAN CH
 HV7588  PID         -  HV7588
 HV7588  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7588  COUNTRY     -  US
 HV7588  USGS QUAD   -  ANACOSTIA (2016)
 HV7588
 HV7588                         *CURRENT SURVEY CONTROL
 HV7588  ______________________________________________________________________
 HV7588* NAD 83(1993) POSITION- 38 46 37.35807(N) 076 58 27.78986(W)   ADJUSTED
 HV7588  ______________________________________________________________________
 HV7588  GEOID HEIGHT    -        -32.390 (meters)                     GEOID18
 HV7588  LAPLACE CORR    -         -3.06  (seconds)                    DEFLEC18
 HV7588  HORZ ORDER      -  THIRD
 HV7588
 HV7588.The horizontal coordinates were established by classical geodetic methods
 HV7588.and adjusted by the National Geodetic Survey in November 1994.
 HV7588
 HV7588.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7588.GEOID18 height accuracy estimate available here.
 HV7588
 HV7588.Click photographs - Photos may exist for this station.
 HV7588
 HV7588.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7588
 HV7588. The following values were computed from the NAD 83(1993) position.
 HV7588
 HV7588;                    North         East     Units Scale Factor Converg.
 HV7588;SPC MD       -   123,256.642   402,225.681   MT  0.99995133   +0 00 57.9
 HV7588;SPC MD       -   404,384.50  1,319,635.42   sFT  0.99995133   +0 00 57.9
 HV7588;UTM  18      - 4,293,886.509   328,491.804   MT  0.99996223   -1 14 12.6
 HV7588
 HV7588_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2849193886(NAD 83)
 HV7588
 HV7588                          SUPERSEDED SURVEY CONTROL
 HV7588
 HV7588  NAD 83(1991)-  38 46 37.35687(N)    076 58 27.79077(W) AD(       ) 3
 HV7588  NAD 83(1986)-  38 46 37.35640(N)    076 58 27.80339(W) AD(       ) 3
 HV7588  NAD 27      -  38 46 36.94527(N)    076 58 28.89361(W) AD(       ) 3
 HV7588
 HV7588.Superseded values are not recommended for survey control.
 HV7588
 HV7588.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7588.See file dsdata.pdf to determine how the superseded data were derived.
 HV7588
 HV7588_MARKER: 90 = CHURCH SPIRE
 HV7588
 HV7588  HISTORY     - Date     Condition        Report By
 HV7588  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7588  HISTORY     - 20030530 GOOD             GEOCAC
 HV7588
 HV7588                          STATION DESCRIPTION
 HV7588
 HV7588'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7588'THE STATION IS THE CENTER OF THE TOP OF THE HENSON VALLEY
 HV7588'CHRISTIAN CHURCH SPIRE, LOCATED 0.2 MILE NORTHWEST OF THE
 HV7588'INTERSECTION OF TUCKER ROAD AND PALMER ROAD AND ABOUT 2.0 MILES
 HV7588'SOUTHEAST OF OXON HILL.  IT IS ABOUT 75 FEET ABOVE THE GROUND.
 HV7588
 HV7588                          STATION RECOVERY (2003)
 HV7588
 HV7588'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV7588'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0620 ***********************************************************************
 HU0620  DESIGNATION -  HEPRO
 HU0620  PID         -  HU0620
 HU0620  STATE/COUNTY-  MD/WICOMICO
 HU0620  COUNTRY     -  US
 HU0620  USGS QUAD   -  HEBRON (2016)
 HU0620
 HU0620                         *CURRENT SURVEY CONTROL
 HU0620  ______________________________________________________________________
 HU0620* NAD 83(1986) POSITION- 38 24 48.72   (N) 075 41 41.49   (W)   HD_HELD1
 HU0620* NAVD 88 ORTHO HEIGHT -    11.705 (meters)       38.40  (feet) ADJUSTED
 HU0620  ______________________________________________________________________
 HU0620  GEOID HEIGHT    -        -35.685 (meters)                     GEOID18
 HU0620  DYNAMIC HEIGHT  -         11.698 (meters)       38.38  (feet) COMP
 HU0620  MODELED GRAVITY -    980,010.8   (mgal)                       NAVD 88
 HU0620
 HU0620  VERT ORDER      -  FIRST     CLASS II
 HU0620
 HU0620.The horizontal coordinates were determined by differentially corrected
 HU0620.hand held GPS observations or other comparable positioning techniques
 HU0620.and have an estimated accuracy of +/- 3 meters.
 HU0620
 HU0620.The orthometric height was determined by differential leveling and
 HU0620.adjusted by the NATIONAL GEODETIC SURVEY
 HU0620.in June 1991.
 HU0620
 HU0620.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0620.GEOID18 height accuracy estimate available here.
 HU0620
 HU0620.Click photographs - Photos may exist for this station.
 HU0620
 HU0620.The dynamic height is computed by dividing the NAVD 88
 HU0620.geopotential number by the normal gravity value computed on the
 HU0620.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0620.degrees latitude (g = 980.6199 gals.).
 HU0620
 HU0620.The modeled gravity was interpolated from observed gravity values.
 HU0620
 HU0620;                    North         East    Units  Estimated Accuracy
 HU0620;SPC MD       -    83,720.1     513,981.2     MT  (+/- 3 meters HH1 GPS) 
 HU0620
 HU0620_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3933751927(NAD 83)
 HU0620
 HU0620                          SUPERSEDED SURVEY CONTROL
 HU0620
 HU0620  NGVD 29 (06/12/91)   11.951  (m)           39.21   (f) ADJUSTED    1 2
 HU0620  NGVD 29 (??/??/87)   11.956  (m)           39.23   (f) SUPERSEDED  1 2
 HU0620
 HU0620.Superseded values are not recommended for survey control.
 HU0620
 HU0620.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0620.See file dsdata.pdf to determine how the superseded data were derived.
 HU0620
 HU0620_STAMPING: HEPRO 1964
 HU0620_MARK LOGO: MDBCSM
 HU0620_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0620+SATELLITE: SATELLITE OBSERVATIONS - January 21, 1990
 HU0620
 HU0620  HISTORY     - Date     Condition        Report By
 HU0620  HISTORY     - 1964     MONUMENTED       MDBCSM
 HU0620  HISTORY     - 1971     GOOD             NGS
 HU0620  HISTORY     - 19900121 GOOD             NGS
 HU0620  HISTORY     - 20180906 MARK NOT FOUND   ARCSHE
 HU0620
 HU0620                          STATION DESCRIPTION
 HU0620
 HU0620'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0620'0.6 MI SW FROM HEBRON.
 HU0620'ABOUT 0.55 MILE SOUTHWEST ALONG STATE HIGHWAY 347 FROM THE POST
 HU0620'OFFICE AT HEBRON, 121 FEET SOUTH OF THE SOUTH CORNER OF THE WEST
 HU0620'SIDE INTERMEDIATE SCHOOL, 18 FEET NORTHWEST OF THE CENTER LINE OF
 HU0620'THE HIGHWAY, 13 FEET SOUTHWEST OF THE CENTER LINE OF A PAVED
 HU0620'DRIVEWAY, 55 FEET SOUTHWEST OF POWER LINE POLE 65, SET IN THE TOP
 HU0620'OF THE SOUTHEAST END OF A SMALL CONCRETE HEADWALL FOR A 12-INCH
 HU0620'PIPE CULVERT, ABOUT LEVEL WITH THE HIGHWAY.
 HU0620
 HU0620                          STATION RECOVERY (1990)
 HU0620
 HU0620'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU0620'0.9 KM (0.56 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 347 (QUANTICO
 HU0620'ROAD) FROM THE POST OFFICE IN HEBRON, IN THE SOUTHEAST END OF THE
 HU0620'SOUTHWEST CONCRETE HEADWALL OF A CULVERT UNDER A DRIVEWAY, 36.9 M
 HU0620'(121.06 FT) SOUTH OF THE SOUTH CORNER OF THE WEST SIDE SCHOOL, 5.5 M
 HU0620'(18.04 FT) NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 4.0 M (13.12
 HU0620'FT) SOUTHWEST OF THE CENTER OF THE DRIVEWAY, AND LEVEL WITH THE
 HU0620'HIGHWAY.
 HU0620
 HU0620                          STATION RECOVERY (2018)
 HU0620
 HU0620'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2018 (MRA)
 HU0620'THE ENTRANCE TO THE SCHOOL HAS BEEN RECONSTRUCTED.  THE MARK IS LIKELY
 HU0620'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV9702 ***********************************************************************
 HV9702  DESIGNATION -  HERB
 HV9702  PID         -  HV9702
 HV9702  STATE/COUNTY-  MD/ST MARYS
 HV9702  COUNTRY     -  US
 HV9702  USGS QUAD   -  MECHANICSVILLE (2016)
 HV9702
 HV9702                         *CURRENT SURVEY CONTROL
 HV9702  ______________________________________________________________________
 HV9702* NAD 83(2011) POSITION- 38 24 45.45162(N) 076 44 09.06539(W)   ADJUSTED
 HV9702* NAD 83(2011) ELLIP HT-    12.665 (meters)        (06/27/12)   ADJUSTED
 HV9702* NAD 83(2011) EPOCH   -  2010.00
 HV9702* NAVD 88 ORTHO HEIGHT -    46.4   (meters)      152.    (feet) GPS OBS
 HV9702  ______________________________________________________________________
 HV9702  NAVD 88 orthometric height was determined with an earlier geoid model
 HV9702  GEOID HEIGHT    -        -33.694 (meters)                     GEOID18
 HV9702  NAD 83(2011) X  -  1,148,147.031 (meters)                     COMP
 HV9702  NAD 83(2011) Y  - -4,870,614.730 (meters)                     COMP
 HV9702  NAD 83(2011) Z  -  3,941,442.128 (meters)                     COMP
 HV9702  LAPLACE CORR    -         -2.07  (seconds)                    DEFLEC18
 HV9702
 HV9702  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV9702  Standards:
 HV9702         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV9702            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV9702  -------------------------------------------------------------------
 HV9702  NETWORK    1.94   4.25           0.92   0.58   2.17     -0.15312813
 HV9702  -------------------------------------------------------------------
 HV9702  Click here for local accuracies and other accuracy information.
 HV9702
 HV9702.The horizontal coordinates were established by GPS observations
 HV9702.and adjusted by the National Geodetic Survey in June 2012.
 HV9702
 HV9702.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV9702.been affixed to the stable North American tectonic plate. See 
 HV9702.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV9702
 HV9702.The horizontal coordinates are valid at the epoch date displayed above
 HV9702.which is a decimal equivalence of Year/Month/Day.
 HV9702
 HV9702.The orthometric height was determined by GPS observations and a
 HV9702.high-resolution geoid model.
 HV9702
 HV9702.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV9702.GEOID18 height accuracy estimate available here.
 HV9702
 HV9702.Click photographs - Photos may exist for this station.
 HV9702
 HV9702.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV9702
 HV9702.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV9702
 HV9702.The ellipsoidal height was determined by GPS observations
 HV9702.and is referenced to NAD 83.
 HV9702
 HV9702. The following values were computed from the NAD 83(2011) position.
 HV9702
 HV9702;                    North         East     Units Scale Factor Converg.
 HV9702;SPC MD       -    82,837.906   423,069.773   MT  0.99998232   +0 09 56.8
 HV9702;SPC MD       -   271,777.36  1,388,021.41   sFT  0.99998232   +0 09 56.8
 HV9702;UTM  18      - 4,253,024.902   348,449.427   MT  0.99988285   -1 04 43.4
 HV9702
 HV9702!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV9702!SPC MD       -   0.99999801  x   0.99998232  =   0.99998033
 HV9702!UTM  18      -   0.99999801  x   0.99988285  =   0.99988086
 HV9702
 HV9702_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH4844953024(NAD 83)
 HV9702
 HV9702                          SUPERSEDED SURVEY CONTROL
 HV9702
 HV9702  NAD 83(2007)-  38 24 45.45235(N)    076 44 09.06510(W) AD(2002.00) 0
 HV9702  ELLIP H (02/10/07)   12.690  (m)                       GP(2002.00)    
 HV9702  ELLIP H (08/30/02)   12.683  (m)                       GP(       ) 4 2
 HV9702  NAD 83(1991)-  38 24 45.45182(N)    076 44 09.06505(W) AD(       ) 1
 HV9702  ELLIP H (05/28/98)   12.758  (m)                       GP(       ) 3 1
 HV9702  NAD 83(1991)-  38 24 45.45186(N)    076 44 09.06541(W) AD(       ) 1
 HV9702  ELLIP H (11/16/93)   12.763  (m)                       GP(       ) 3 1
 HV9702  NAVD 88 (11/16/93)   46.4    (m)  GEOID93  model used  GPS OBS        
 HV9702
 HV9702.Superseded values are not recommended for survey control.
 HV9702
 HV9702.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV9702.See file dsdata.pdf to determine how the superseded data were derived.
 HV9702
 HV9702_MARKER: DD = SURVEY DISK
 HV9702_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV9702_STAMPING: HERB
 HV9702_MARK LOGO: MCCRON
 HV9702_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 HV9702_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV9702+STABILITY: SURFACE MOTION
 HV9702_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV9702+SATELLITE: SATELLITE OBSERVATIONS - April 30, 1997
 HV9702
 HV9702  HISTORY     - Date     Condition        Report By
 HV9702  HISTORY     - 1992     MONUMENTED       MCCRON
 HV9702  HISTORY     - 19970430 GOOD             MD-037
 HV9702
 HV9702                          STATION DESCRIPTION
 HV9702
 HV9702'DESCRIBED BY J R MCCRONE JR INCORPORATED 1992
 HV9702'STATION IS LOCATED ABOUT 2 MI (3.2 KM) SOUTH OF MECHANICSVILLE.
 HV9702'TO REACH FROM THE INTERSECTION OF ROUTES 5 AND 235 SOUTH OF
 HV9702'MECHANICSVILLE, GO NORTH ON ROUTE 5/235 FOR 0.5 MI (0.8 KM) TO
 HV9702'BAPTIST CHURCH ROAD. TURN LEFT ON BAPTIST CHURCH ROAD FOR 1.7 MI
 HV9702'(2.7 KM) TO STATION ON THE RIGHT.
 HV9702'STATION MARK IS A CONCRETE MARKER WITH AN -X- CUT IN THE TOP, A
 HV9702'BOUNDARY CORNER FOR THE REDMOND PROPERTY. IT IS LOCATED 7.5 FT
 HV9702'(2.3 M) WEST OF THE EDGE OF PAVE, 50.0 FT (15.2 M) SOUTHWEST OF
 HV9702'POWERPOLE NO.29.5, AND 135.3 FT (41.2 M) SOUTH OF AN UNNUMBERED
 HV9702'POWERPOLE.
 HV9702
 HV9702                          STATION RECOVERY (1997)
 HV9702
 HV9702'RECOVERY NOTE BY ST MARYS COUNTY MARYLAND 1997 (JW)
 HV9702'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6211 ***********************************************************************
 HV6211  DESIGNATION -  HERE
 HV6211  PID         -  HV6211
 HV6211  STATE/COUNTY-  MD/QUEEN ANNES
 HV6211  COUNTRY     -  US
 HV6211  USGS QUAD   -  KENT ISLAND (2016)
 HV6211
 HV6211                         *CURRENT SURVEY CONTROL
 HV6211  ______________________________________________________________________
 HV6211* NAD 83(1991) POSITION- 38 56 40.08288(N) 076 19 41.76030(W)   ADJUSTED
 HV6211* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6211  ______________________________________________________________________
 HV6211  GEOID HEIGHT    -        -33.655 (meters)                     GEOID18
 HV6211  LAPLACE CORR    -         -3.34  (seconds)                    DEFLEC18
 HV6211  HORZ ORDER      -  THIRD
 HV6211
 HV6211.The horizontal coordinates were established by classical geodetic methods
 HV6211.and adjusted by the National Geodetic Survey in January 1992.
 HV6211
 HV6211.The orthometric height was scaled from a topographic map.
 HV6211
 HV6211.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6211.GEOID18 height accuracy estimate available here.
 HV6211
 HV6211.Click photographs - Photos may exist for this station.
 HV6211
 HV6211.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6211
 HV6211. The following values were computed from the NAD 83(1991) position.
 HV6211
 HV6211;                    North         East     Units Scale Factor Converg.
 HV6211;SPC MD       -   142,055.813   458,231.890   MT  0.99995056   +0 25 17.8
 HV6211;SPC MD       -   466,061.45  1,503,382.46   sFT  0.99995056   +0 25 17.8
 HV6211;UTM  18      - 4,311,452.866   384,891.013   MT  0.99976316   -0 50 06.0
 HV6211
 HV6211!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6211!SPC MD       -   1.00000516  x   0.99995056  =   0.99995572
 HV6211!UTM  18      -   1.00000516  x   0.99976316  =   0.99976832
 HV6211
 HV6211_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8489111452(NAD 83)
 HV6211
 HV6211|---------------------------------------------------------------------|
 HV6211| PID    Reference Object                     Distance      Geod. Az  |
 HV6211|                                                           dddmmss.s |
 HV6211| HV6188 SAMUEL                              367.602 METERS 03122     |
 HV6211|---------------------------------------------------------------------|
 HV6211
 HV6211                          SUPERSEDED SURVEY CONTROL
 HV6211
 HV6211  NAD 83(1986)-  38 56 40.07890(N)    076 19 41.77245(W) AD(       ) 3
 HV6211  NAD 27      -  38 56 39.67000(N)    076 19 42.96600(W) AD(       ) 3
 HV6211  USSD        -  38 56 40.06500(N)    076 19 42.76000(W) AD(       ) 3
 HV6211
 HV6211.Superseded values are not recommended for survey control.
 HV6211
 HV6211.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6211.See file dsdata.pdf to determine how the superseded data were derived.
 HV6211
 HV6211_MARKER: U = CONCRETE POST
 HV6211_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6211_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6211_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6211
 HV6211  HISTORY     - Date     Condition        Report By
 HV6211  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6211  HISTORY     - 1934     POOR             CGS
 HV6211  HISTORY     - 1940     POOR             CGS
 HV6211  HISTORY     - 1960     POOR             CGS
 HV6211  HISTORY     - 1973     POOR             MDDNR
 HV6211  HISTORY     - 1975     SEE DESCRIPTION  MDDNR
 HV6211  HISTORY     - 1987     GOOD             LOCSUR
 HV6211
 HV6211                          STATION DESCRIPTION
 HV6211
 HV6211'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6211'STATION IS ON THE SOUTHWESTERN SHORE OF WAREHOUSE CREEK, ON POINT
 HV6211'AT NORTHWESTERN SIDE OF ENTRANCE TO A SMALL COVE ABOUT 3/4 MILE NW
 HV6211'OF COX CREEK, ON MARSH, ABOUT 1 FOOT ABOVE HIGH WATER, 17 YARDS W
 HV6211'OF SHORE, 20 YARDS SW OF SHORE, 25 YARDS NW OF SHORE, 60 YARDS N
 HV6211'OF SHORE, 3 YARDS SE OF ONE-STRAND BARBED-WIRE FENCE, AND 1/4 MILE
 HV6211'E TO SE OF WOODS.  STATION IS MARKED BY A HOLE IN THE CENTER OF
 HV6211'THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN
 HV6211'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING
 HV6211'ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV6211'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH
 HV6211'DRAINTILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE
 HV6211'MONUMENT.  DISTANCES AND AZIMUTHS TO VARIOUS POINTS OF
 HV6211'REFERENCE ARE AS FOLLOWS--PEAK OF SIDE GABLE HOUSE, 1-1/2
 HV6211'MILES, S 37 DEG 16 MIN W.  LEFT END OF LARGE HOUSE, 3/4 MILE,
 HV6211'N 13 DEG 58 MIN W.  CHIMNEY OUTSIDE NW END OF LARGE HOUSE, 1-7/8
 HV6211'MILES, N 51 DEG 56 MIN E.  NEAR PEAK OF HOUSE, 1 3/8 MILES, N 74
 HV6211'DEG 23 MIN E.  CUPOLA ON BARN, 1-3/4 MILES, S 69 DEG 21 MIN E.
 HV6211'CUPOLA ON BARN, 1-3/4 MILES, S 51 DEG 53 MIN E.  MIDDLE N CHIMNEY
 HV6211'OF LARGE OLD BRICK HOUSE, 3/4 MILE, S 32 DEG 59 MIN E.
 HV6211
 HV6211                          STATION RECOVERY (1934)
 HV6211
 HV6211'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 HV6211'RECOVERED.  STATION IS IN MARSH 10 METERS SW OF SHORE AND ABOUT 65
 HV6211'METERS FROM TIP OF POINT.  MARKER IS M.S.F.C. MONUMENT AND IS IN
 HV6211'POOR CONDITION.
 HV6211
 HV6211                          STATION RECOVERY (1940)
 HV6211
 HV6211'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV6211'STATION MARK RECOVERED IN POOR SHAPE BUT APPARENTLY UNMOVED.
 HV6211'
 HV6211'STATION IS LOCATED ON SOUTHWESTERN SHORE OF WAREHOUSE CREEK, ON A
 HV6211'MARSH POINT AT NORTHWESTERN SIDE OF ENTRANCE TO A COVE ABOUT 3/4
 HV6211'MILE NW OF COX CREEK, 71 YARDS NW OF POINT OF MARSH, 11 YARDS SW
 HV6211'OF SHORE.
 HV6211'
 HV6211'RECOMMEND THAT NEW C. AND G.S. MARK BE INSTALLED.
 HV6211
 HV6211                          STATION RECOVERY (1960)
 HV6211
 HV6211'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6211'STATION RECOVERED AS DESCRIBED BY L.W.S. IN 1940, IN POOR
 HV6211'CONDITION.  THE TOP OF THE MONUMENT HAS BEEN BROKEN UP, BUT THE
 HV6211'LOWER PORTION APPEARS UNMOVED.  THE STATION IS 68 YDS FROM EXTREME
 HV6211'TIP OF POINT, AND 6 YDS SW FROM THE NORTH SHORE.
 HV6211
 HV6211                          STATION RECOVERY (1973)
 HV6211
 HV6211'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV6211'STATION WAS RECOVERED AS DESCRIBED IN POOR CONDITION WITH THE
 HV6211'FOLLOWING CHANGES--STATION MARK IS 60 YARDS FROM EXTREME END OF
 HV6211'POINT.  2 INCH WOOD POLE IS ALONGSIDE STATION.  STATION IS 12 FEET
 HV6211'NE OF 2 X 2 MARSH POND.  WITNESS POST AND SIGN PLACED ON NE SIDE
 HV6211'OF MONUMENT.
 HV6211
 HV6211                          STATION RECOVERY (1975)
 HV6211
 HV6211'RECOVERY NOTE BY MD DEPT OF NAT RES 1975
 HV6211'A NEW SURFACE MARK WAS SET.  REMAINS OF OLD MSFC-USCS MONUMENT
 HV6211'REMOVED AND 2 INCH TILE PIPE SUB-SURFACE MARK RECOVERED 2.0
 HV6211'FT. BELOW SURFACE OF MARSH.  NEW SURFACE MONUMENT CENTERED OVER
 HV6211'2 INCH TILE PIPE AND BRASS STATE OF MARYLAND SURVEY DISK PLUMBED
 HV6211'OVER SUB-SURFACE MARK.  NEW MONUMENT IS 1.8 FT. LONG AND 10 INCH
 HV6211'IN DIA. SET FLUSH WITH THE SURFACE OF THE MARSH.  MONUMENT SET .2
 HV6211'FT. ABOVE SUB-SURFACE MARK.  MARK STAMPED HERE 1909 MSFC USCS.
 HV6211'
 HV6211'WITNESS POST AND SIGN SET ON RANGE WITH WLY CUPOLA ON LARGE BARN
 HV6211'2.2 FT. SELY OF STATION.  STATION IS LOCATED ON THE SOUTHERLY SIDE
 HV6211'OF WAREHOUSE CREEK ABOUT 3/4 MILE ABOVE ITS ENTRANCE TO COX CREEK
 HV6211'16.5 FT. SWLY OF SHORELINE, 173.0 FT. NWLY OF POINT, 11.5 FT. NLY
 HV6211'OF SMALL POND, AND 63.0 FT. NELY OF EDGE OF TALL MARSH GRASS.
 HV6211
 HV6211                          STATION RECOVERY (1987)
 HV6211
 HV6211'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1987 (LW)
 HV6211'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1480 ***********************************************************************
 JV1480  DESIGNATION -  HEREFORD RM 1
 JV1480  PID         -  JV1480
 JV1480  STATE/COUNTY-  MD/BALTIMORE
 JV1480  COUNTRY     -  US
 JV1480  USGS QUAD   -  HEREFORD (2016)
 JV1480
 JV1480                         *CURRENT SURVEY CONTROL
 JV1480  ______________________________________________________________________
 JV1480* NAD 83(1986) POSITION- 39 35 29.32   (N) 076 40 12.09   (W)   HD_HELD1
 JV1480* NAVD 88 ORTHO HEIGHT -   198.732 (meters)      652.01  (feet) ADJUSTED
 JV1480  ______________________________________________________________________
 JV1480  GEOID HEIGHT    -        -32.272 (meters)                     GEOID18
 JV1480  DYNAMIC HEIGHT  -        198.631 (meters)      651.68  (feet) COMP
 JV1480  MODELED GRAVITY -    980,116.8   (mgal)                       NAVD 88
 JV1480
 JV1480  VERT ORDER      -  SECOND    CLASS 0
 JV1480
 JV1480.The horizontal coordinates were determined by differentially corrected
 JV1480.hand held GPS observations or other comparable positioning techniques
 JV1480.and have an estimated accuracy of +/- 3 meters.
 JV1480
 JV1480.The orthometric height was determined by differential leveling and
 JV1480.adjusted by the NATIONAL GEODETIC SURVEY
 JV1480.in June 1991.
 JV1480
 JV1480.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1480.GEOID18 height accuracy estimate available here.
 JV1480
 JV1480.Click photographs - Photos may exist for this station.
 JV1480
 JV1480.The dynamic height is computed by dividing the NAVD 88
 JV1480.geopotential number by the normal gravity value computed on the
 JV1480.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1480.degrees latitude (g = 980.6199 gals.).
 JV1480
 JV1480.The modeled gravity was interpolated from observed gravity values.
 JV1480
 JV1480;                    North         East    Units  Estimated Accuracy
 JV1480;SPC MD       -   213,722.7     428,345.8     MT  (+/- 3 meters HH1 GPS) 
 JV1480
 JV1480_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5659783748(NAD 83)
 JV1480
 JV1480                          SUPERSEDED SURVEY CONTROL
 JV1480
 JV1480  NGVD 29 (11/26/84)  198.940  (m)          652.69   (f) ADJUSTED    2 0
 JV1480
 JV1480.Superseded values are not recommended for survey control.
 JV1480
 JV1480.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1480.See file dsdata.pdf to determine how the superseded data were derived.
 JV1480
 JV1480_MARKER: DR = REFERENCE MARK DISK
 JV1480_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1480_STAMPING: HEREFORD NO 1 1959
 JV1480_MARK LOGO: CGS
 JV1480_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1480+STABILITY: SURFACE MOTION
 JV1480
 JV1480  HISTORY     - Date     Condition        Report By
 JV1480  HISTORY     - 1959     MONUMENTED       CGS
 JV1480
 JV1480                          STATION DESCRIPTION
 JV1480
 JV1480'DESCRIBED BY COAST AND GEODETIC SURVEY 1959
 JV1480'0.3 MI W FROM HEREFORD.
 JV1480'0.3 MILE WEST ALONG STATE HIGHWAY 137 FROM ITS JUNCTION WITH
 JV1480'STATE HIGHWAY 45 AT HEREFORD, 77 FEET NORTH OF THE STATION,
 JV1480'73 FEET NORTHWEST OF POWER LINE POLE NO. 12, 88 1/2 FEET NORTHEAST
 JV1480'OF POWER LINE POLE NO. 13, SET IN THE TOP OF A CONCRETE POST
 JV1480'FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1481 ***********************************************************************
 JV1481  DESIGNATION -  HEREFORD RM 2
 JV1481  PID         -  JV1481
 JV1481  STATE/COUNTY-  MD/BALTIMORE
 JV1481  COUNTRY     -  US
 JV1481  USGS QUAD   -  HEREFORD (2016)
 JV1481
 JV1481                         *CURRENT SURVEY CONTROL
 JV1481  ______________________________________________________________________
 JV1481* NAD 83(1991) POSITION- 39 35 28.32322(N) 076 40 11.32168(W)   ADJUSTED
 JV1481* NAVD 88 ORTHO HEIGHT -   200.774 (meters)      658.71  (feet) ADJUSTED
 JV1481  ______________________________________________________________________
 JV1481  GEOID HEIGHT    -        -32.273 (meters)                     GEOID18
 JV1481  LAPLACE CORR    -         -2.56  (seconds)                    DEFLEC18
 JV1481  DYNAMIC HEIGHT  -        200.672 (meters)      658.37  (feet) COMP
 JV1481  MODELED GRAVITY -    980,116.7   (mgal)                       NAVD 88
 JV1481
 JV1481  HORZ ORDER      -  SECOND
 JV1481  VERT ORDER      -  SECOND    CLASS 0
 JV1481
 JV1481.The horizontal coordinates were established by classical geodetic methods
 JV1481.and adjusted by the National Geodetic Survey in January 1992.
 JV1481
 JV1481.The orthometric height was determined by differential leveling and
 JV1481.adjusted by the NATIONAL GEODETIC SURVEY
 JV1481.in June 1991.
 JV1481
 JV1481.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1481.GEOID18 height accuracy estimate available here.
 JV1481
 JV1481.Click photographs - Photos may exist for this station.
 JV1481
 JV1481.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1481
 JV1481.The dynamic height is computed by dividing the NAVD 88
 JV1481.geopotential number by the normal gravity value computed on the
 JV1481.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1481.degrees latitude (g = 980.6199 gals.).
 JV1481
 JV1481.The modeled gravity was interpolated from observed gravity values.
 JV1481
 JV1481. The following values were computed from the NAD 83(1991) position.
 JV1481
 JV1481;                    North         East     Units Scale Factor Converg.
 JV1481;SPC MD       -   213,692.054   428,364.208   MT  1.00002775   +0 12 26.1
 JV1481;SPC MD       -   701,088.01  1,405,391.57   sFT  1.00002775   +0 12 26.1
 JV1481;UTM  18      - 4,383,717.903   356,615.204   MT  0.99985312   -1 03 51.7
 JV1481
 JV1481!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1481!SPC MD       -   0.99997357  x   1.00002775  =   1.00000131
 JV1481!UTM  18      -   0.99997357  x   0.99985312  =   0.99982669
 JV1481
 JV1481:                Primary Azimuth Mark                     Grid Az
 JV1481:SPC MD       -  HEREFORD AZ MK                           290 40 04.4
 JV1481:UTM  18      -  HEREFORD AZ MK                           291 56 22.2
 JV1481
 JV1481_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5661583717(NAD 83)
 JV1481
 JV1481|---------------------------------------------------------------------|
 JV1481| PID    Reference Object                     Distance      Geod. Az  |
 JV1481|                                                           dddmmss.s |
 JV1481| JV6553 HEREFORD RM 2 RM 3                   22.157 METERS 09601     |
 JV1481| JV6554 HEREFORD RM 2 RM 5                   18.098 METERS 19216     |
 JV1481| CA9516 HEREFORD RM 2 RM 4                                 19713     |
 JV1481| JV1479 HEREFORD                             23.746 METERS 28854     |
 JV1481| CA9515 HEREFORD AZ MK                                     2905230.5 |
 JV1481|---------------------------------------------------------------------|
 JV1481
 JV1481                          SUPERSEDED SURVEY CONTROL
 JV1481
 JV1481  NAD 83(1986)-  39 35 28.31893(N)    076 40 11.32577(W) AD(       ) 2
 JV1481  NAD 83(1986)-  39 35 28.27919(N)    076 40 11.33026(W) AD(       ) 2
 JV1481  NAD 27      -  39 35 27.93700(N)    076 40 12.42800(W) AD(       ) 2
 JV1481  NGVD 29             200.98   (m)          659.4    (f) LEVELING    3  
 JV1481  NGVD 29 (11/26/84)  200.982  (m)          659.39   (f) ADJUSTED    2 0
 JV1481
 JV1481.Superseded values are not recommended for survey control.
 JV1481
 JV1481.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1481.See file dsdata.pdf to determine how the superseded data were derived.
 JV1481
 JV1481_MARKER: DR = REFERENCE MARK DISK
 JV1481_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1481_STAMPING: HEREFORD NO 2 1959
 JV1481_MARK LOGO: CGS
 JV1481_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV1481_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1481+STABILITY: SURFACE MOTION
 JV1481
 JV1481  HISTORY     - Date     Condition        Report By
 JV1481  HISTORY     - 1959     MONUMENTED       CGS
 JV1481  HISTORY     - 1959     GOOD             CGS
 JV1481  HISTORY     - 1960     GOOD             CGS
 JV1481  HISTORY     - 1979     GOOD             NGS
 JV1481  HISTORY     - 19991104 GOOD             NGS
 JV1481
 JV1481                          STATION DESCRIPTION
 JV1481
 JV1481'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (WFD)
 JV1481'STATION IS LOCATED ALONG THE NORTH SIDE OF STATE HIGHWAY NO. 137
 JV1481'ABOUT 0.3 MILE NORTHWEST OF HEREFORD, 0.15 MILE SOUTHEAST
 JV1481'OF THE OVERPASS AT U.S. HIGHWAY NO. 111 AND STATE HIGHWAY NO. 137
 JV1481'AND ACROSS THE ROAD FROM DRIVEWAY OF WHITE CLAPBOARD HOUSE
 JV1481'WITH GREEN ROOF.  STATION, A STANDARD REFERENCE MARK DISK SET
 JV1481'IN A 12 X 12 INCH CONCRETE MONUMENT AND STAMPED HEREFORD NO. 2
 JV1481'1959, IS 34.0 FEET NORTH OF CENTERLINE OF STATE HIGHWAY NO.
 JV1481'137, 67.8 FEET SOUTH OF C AND P B C UTILITY POLE NO. 12, 21.6
 JV1481'FEET SOUTHWEST OF A 16 INCH MAPLE TREE AND 3 FEET
 JV1481'SOUTHWEST OF WITNESS MARKER.  THE MARK IS FLUSH WITH THE
 JV1481'GROUND.
 JV1481'
 JV1481'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 45 AND 137 IN
 JV1481'HEREFORD, GO WESTERLY ON STATE HIGHWAY NO. 137 FOR 0.3 MILE TO
 JV1481'STATION ON RIGHT (NORTH) SIDE OF HIGHWAY AS DESCRIBED.  CONTINUE
 JV1481'WESTERLY ON STATE HIGHWAY NO. 137 FOR 0.15 TO OVERPASS, CROSS
 JV1481'OVERPASS AND CONTINUE 0.1 MILE TO AZIMUTH MARK ON RIGHT (NORTH)
 JV1481'SIDE OF HIGHWAY AS DESCRIBED.
 JV1481'
 JV1481'REFERENCE MARK RM 2 NO. 3, A STANDARD DISK SET IN A 12 X 12
 JV1481'INCH CONCRETE MONUMENT AND STAMPED HEREFORD RM 2 NO. 3 1959 IS
 JV1481'30.4 FEET NORTH OF CENTERLINE OF STATE HIGHWAY NO. 137 AND 97.6
 JV1481'FEET SOUTHWEST OF C AND P B C UTILITY POLE NO. 11.  THE MARK IS
 JV1481'FLUSH WITH THE GROUND.
 JV1481'
 JV1481'REFERENCE MARK RM 2 NO. 4, A STANDARD DISK SET IN A DRILL
 JV1481'HOLE IN TOP OF NORTHWEST CORNER OF A STORM WATER INLET AND
 JV1481'STAMPED HEREFORD RM 2 NO. 4 1959 IS 24.4 FEET SOUTH OF
 JV1481'CENTERLINE OF STATE NO. 137 AND 20.0 FEET EAST OF CENTERLINE
 JV1481'OF DRIVE TO KENNETH WHEATS HOUSE.
 JV1481'
 JV1481'AZIMUTH MARK, A STANDARD DISK SET IN A 12 X 12 INCH CONCRETE
 JV1481'MONUMENT AND STAMPED HEREFORD RM 2 1959 IS ABOUT 75 YARDS
 JV1481'NORTHWEST OF WEST END OF OVERPASS, 50 FEET SOUTHEAST OF RAMP
 JV1481'LEADING TO STATE HIGHWAY NO. 137, 89-1/2 FEET NORTH OF
 JV1481'APPROXIMATE CENTERLINE OF STATE HIGHWAY NO. 137 AND 3 FEET
 JV1481'SOUTHEAST OF WITNESS POST.  THE MARK IS FLUSH WITH THE GROUND.
 JV1481
 JV1481                          STATION RECOVERY (1959)
 JV1481
 JV1481'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959
 JV1481'0.3 MI W FROM HEREFORD.
 JV1481'0.3 MILE WEST ALONG STATE HIGHWAY 137 FROM ITS JUNCTION WITH
 JV1481'STATE HIGHWAY 45 AT HEREFORD, 78 FEET SOUTHEAST OF THE STATION,
 JV1481'22 FEET SOUTH OF A 15-INCH MAPLE TREE, 34 FEET NORTH OF THE
 JV1481'CENTER LINE OF THE HIGHWAY, SET IN THE TOP OF A CONCRETE POST
 JV1481'FLUSH WITH THE GROUND.
 JV1481
 JV1481                          STATION RECOVERY (1960)
 JV1481
 JV1481'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (WER)
 JV1481'STATION, REFERENCE MARK NO. 3, AND REFERENCE MARK NO. 4,
 JV1481'RECOVERED IN GOOD CONDITION AS DESCRIBED.
 JV1481'
 JV1481'AZIMUTH MARK RECOVERED IN GOOD CONDITION AS DESCRIBED, EXCEPT
 JV1481'FOR THE FOLLOWING CHANGE.  THE DISTANCE FROM THE WEST END OF
 JV1481'OVERPASS SHOULD READ 130 YARDS, INSTEAD OF 75 YARDS.
 JV1481'
 JV1481'AZIMUTH MARK, STAMPED HEREFORD RM 2 1959, IS THE ORIGINAL
 JV1481'AZIMUTH MARK FOR STATION HEREFORD, 1959.
 JV1481
 JV1481                          STATION RECOVERY (1979)
 JV1481
 JV1481'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 JV1481'THE STATION MARK, REFERENCE MARK 3 AND THE AZIMUTH MARK WERE
 JV1481'RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK 4 WAS NOT FOUND
 JV1481'AND BELIEVED DESTROYED BY CONSTRUCTION.  A NEW REFERENCE MARK 5 WAS
 JV1481'ESTABLISHED AND ELEVATIONS PLACED ON ALL MARKS.  A SHORTER DISTANCE
 JV1481'OF 0.02 FOOT OR 0.008 METER WAS NOTED TO REFERENCE MARK 3.
 JV1481'
 JV1481'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV1481'
 JV1481'THE STATION IS LOCATED ABOUT 20 MILES NORTH OF BALTIMORE, 1/2 MILE
 JV1481'NORTHWEST OF HEREFORD AND 1/4 MILE EAST OF THE INTERSECTION OF
 JV1481'INTERSTATE HIGHWAY 83 AND STATE HIGHWAY 137.  IT IS ON THE
 JV1481'RIGHT-OF-WAY OF STATE HIGHWAY 137.
 JV1481'
 JV1481'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAY 83
 JV1481'AND STATE HIGHWAY 137 (EXIT 27) GO EASTERLY ON STATE HIGHWAY 137 FOR
 JV1481'0.25 MILE TO AN EXXON GAS STATION ON THE RIGHT AND THE STATION ON THE
 JV1481'LEFT.
 JV1481'
 JV1481'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 JV1481'STAMPED---HEREFORD NO 2 1959---SET INTO THE TOP OF A SQUARE
 JV1481'CONCRETE MONUMENT 25 CM (10 INCHES) ON SIDE PROJECTING 5 CM (2
 JV1481'INCHES) ABOVE THE GROUND LOCATED 24.23 METERS (79.5 FEET) NE FROM A
 JV1481'POWERLINE POLE NUMBERED 230439, 10.4 METERS (34 FEET) N FROM THE
 JV1481'CENTER OF STATE HIGHWAY 137, 7.0 METERS (23 FEET) SW FROM THE MOST
 JV1481'WESTERLY ONE OF TWO 3 FOOT MAPLE TREES, 2.4 METERS (8 FEET) E FROM A
 JV1481'FIELD ROAD, AND 0.43 METER (1.4 FEET) S FROM A WITNESS POST.
 JV1481'
 JV1481'REFERENCE MARK NO. 3 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 JV1481'NOS) DISK STAMPED---HEREFORD RM 3 NO 3 1959---SET INTO THE TOP OF A
 JV1481'SQUARE CONCRETE MONUMENT 25 CM (10 INCHES) ON SIDE FLUSH WITH THE
 JV1481'GROUND LOCATED 22.19 METERS (72.8 FEET) E FROM THE WITNESS POST, 11.0
 JV1481'METERS (36 FEET) SE FROM THE MOST EASTERLY ONE OF TWO 3 FOOT MAPLE
 JV1481'TREES, 9.4 METERS (31 FEET) N FROM THE CENTER OF STATE HIGHWAY 137,
 JV1481'7.3 METERS (24 FEET) W FROM A POWERLINE POLE NUMBERED 370747-11, AND
 JV1481'0.9 METER (3 FEET) HIGHER THAN THE STATION.
 JV1481'
 JV1481'REFERENCE MARK NO. 5 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 JV1481'STAMPED---HEREFORD RM 2 1959 NO 5 1979---SET IN A DRILL HOLE IN A
 JV1481'6-FOOT CATCH BASIN ON THE SOUTH SIDE OF STATE HIGHWAY 137.  IT IS
 JV1481'LOCATED 18.53 METERS (60.8 FEET) SSW FROM THE WITNESS POST, 7.47
 JV1481'METERS (24.5 FEET) S FROM THE CENTER OF STATE HIGHWAY 137, 10.4
 JV1481'METERS (34 FEET) ENE FROM THE POWERLINE POLE NUMBERED 230439, 0.6
 JV1481'METER (2 FEET) NE FROM A 2-FOOT MANHOLE IN THE EAST PART OF THE
 JV1481'BASIN, AND 0.3 METER (1 FOOT) HIGHER THAN THE STATION.
 JV1481'
 JV1481'AZIMUTH MARK IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS)
 JV1481'DISK STAMPED---HEREFORD RM 2 1959---SET INTO THE TOP OF A SQUARE
 JV1481'CONCRETE MONUMENT 25 CM (10 INCHES) ON SIDE FLUSH WITH THE GROUND
 JV1481'LOCATED 27.4 METERS (90 FEET) NE FROM THE CENTER OF STATE HIGHWAY
 JV1481'137, 15.2 METERS (50 FEET) SE FROM A RAMP ON THE EAST SIDE OF
 JV1481'INTERSTATE HIGHWAY 83, 7.3 METERS (24 FEET) NE FROM THE NORTH EDGE OF
 JV1481'A PARKING AREA, AND 0.3 METER (1 FOOT) S FROM A WITNESS POST.
 JV1481'
 JV1481'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF INTERSTATE HIGHWAY
 JV1481'83 AND STATE HIGHWAY 137, GO EAST ON STATE HIGHWAY 137 FOR 0.05 MILE
 JV1481'TO THE PARKING AREA ON THE LEFT AND THE AZIMUTH MARK ON THE LEFT ATOP
 JV1481'A SMALL HILL.
 JV1481
 JV1481                          STATION RECOVERY (1999)
 JV1481
 JV1481'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (BB)
 JV1481'GOOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6553 ***********************************************************************
 JV6553  DESIGNATION -  HEREFORD RM 2 RM 3
 JV6553  PID         -  JV6553
 JV6553  STATE/COUNTY-  MD/BALTIMORE
 JV6553  COUNTRY     -  US
 JV6553  USGS QUAD   -  HEREFORD (2016)
 JV6553
 JV6553                         *CURRENT SURVEY CONTROL
 JV6553  ______________________________________________________________________
 JV6553* NAD 83(1986) POSITION- 39 35 28.25   (N) 076 40 10.40   (W)   HD_HELD1
 JV6553* NAVD 88 ORTHO HEIGHT -   201.93  (meters)      662.5   (feet) RESET
 JV6553  ______________________________________________________________________
 JV6553  GEOID HEIGHT    -        -32.273 (meters)                     GEOID18
 JV6553  VERT ORDER      -  THIRD
 JV6553
 JV6553.The horizontal coordinates were determined by differentially corrected
 JV6553.hand held GPS observations or other comparable positioning techniques
 JV6553.and have an estimated accuracy of +/- 3 meters.
 JV6553
 JV6553.The orthometric height was computed from unverified reset data.
 JV6553
 JV6553.No vertical observational check was made to the station.
 JV6553
 JV6553.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6553.GEOID18 height accuracy estimate available here.
 JV6553
 JV6553.Click photographs - Photos may exist for this station.
 JV6553
 JV6553;                    North         East    Units  Estimated Accuracy
 JV6553;SPC MD       -   213,689.9     428,386.2     MT  (+/- 3 meters HH1 GPS) 
 JV6553
 JV6553_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5663783715(NAD 83)
 JV6553
 JV6553                          SUPERSEDED SURVEY CONTROL
 JV6553
 JV6553  NGVD 29 (11/18/05)  202.14   (m)          663.2    (f) RESET       3  
 JV6553
 JV6553.Superseded values are not recommended for survey control.
 JV6553
 JV6553.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6553.See file dsdata.pdf to determine how the superseded data were derived.
 JV6553
 JV6553_MARKER: DR = REFERENCE MARK DISK
 JV6553_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6553_STAMPING: HEREFORD RM 2 NO 3 1959
 JV6553_MARK LOGO: CGS
 JV6553_PROJECTION: FLUSH
 JV6553_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6553+STABILITY: SURFACE MOTION
 JV6553
 JV6553  HISTORY     - Date     Condition        Report By
 JV6553  HISTORY     - 1959     MONUMENTED       CGS
 JV6553  HISTORY     - 1979     GOOD             NGS
 JV6553
 JV6553                          STATION DESCRIPTION
 JV6553
 JV6553'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV6553'0.8 KM (0.50 MI) NW FROM HEREFORD.
 JV6553'FROM THE OVERPASS BRIDGE AT THE INTERSECTION OF INTERSTATE HIGHWAY 83
 JV6553'AND STATE HIGHWAY 137 (EXIT 27) GO EASTERLY ON STATE HIGHWAY 137 FOR
 JV6553'0.25 MILE TO THE MARK ON THE LEFT, 36 FEET SOUTHEAST OF THE MOST
 JV6553'EASTERLY ONE OF TWO MAPLE TREES, 31 FEET NORTH OF THE CENTER OF STATE
 JV6553'HIGHWAY 137 AND 24 FEET WEST OF A POWERLINE POLE NUMBERED 380747-11.
 JV6553'THE MARK IS 2.2 METERS  E FROM  A WITNESS POST
 JV6553'THE MARK IS 0.3 M ABOVE HIGHWAY 137.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6554 ***********************************************************************
 JV6554  DESIGNATION -  HEREFORD RM 2 RM 5
 JV6554  PID         -  JV6554
 JV6554  STATE/COUNTY-  MD/BALTIMORE
 JV6554  COUNTRY     -  US
 JV6554  USGS QUAD   -  HEREFORD (2016)
 JV6554
 JV6554                         *CURRENT SURVEY CONTROL
 JV6554  ______________________________________________________________________
 JV6554* NAD 83(1986) POSITION- 39 35 27.75   (N) 076 40 11.48   (W)   HD_HELD1
 JV6554* NAVD 88 ORTHO HEIGHT -   201.13  (meters)      659.9   (feet) RESET
 JV6554  ______________________________________________________________________
 JV6554  GEOID HEIGHT    -        -32.273 (meters)                     GEOID18
 JV6554  VERT ORDER      -  THIRD
 JV6554
 JV6554.The horizontal coordinates were determined by differentially corrected
 JV6554.hand held GPS observations or other comparable positioning techniques
 JV6554.and have an estimated accuracy of +/- 3 meters.
 JV6554
 JV6554.The orthometric height was computed from unverified reset data.
 JV6554
 JV6554.No vertical observational check was made to the station.
 JV6554
 JV6554.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6554.GEOID18 height accuracy estimate available here.
 JV6554
 JV6554.Click photographs - Photos may exist for this station.
 JV6554
 JV6554;                    North         East    Units  Estimated Accuracy
 JV6554;SPC MD       -   213,674.4     428,360.5     MT  (+/- 3 meters HH1 GPS) 
 JV6554
 JV6554_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5661183700(NAD 83)
 JV6554
 JV6554                          SUPERSEDED SURVEY CONTROL
 JV6554
 JV6554  NGVD 29 (11/18/05)  201.34   (m)          660.6    (f) RESET       3  
 JV6554
 JV6554.Superseded values are not recommended for survey control.
 JV6554
 JV6554.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6554.See file dsdata.pdf to determine how the superseded data were derived.
 JV6554
 JV6554_MARKER: DR = REFERENCE MARK DISK
 JV6554_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV6554_SP_SET: CATCH BASIN
 JV6554_STAMPING: HEREFORD RM 2 1959 NO 5 1979
 JV6554_MARK LOGO: NGS
 JV6554_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6554
 JV6554  HISTORY     - Date     Condition        Report By
 JV6554  HISTORY     - 1979     MONUMENTED       NGS
 JV6554  HISTORY     - 1979     GOOD             NGS
 JV6554
 JV6554                          STATION DESCRIPTION
 JV6554
 JV6554'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV6554'0.8 KM (0.50 MI) NW FROM HEREFORD.
 JV6554'FROM THE INTERSECTION OF INTERSTATE HIGHWAY 83 AND STATE HIGHWAY 137
 JV6554'(EXIT 27) GO EASTERLY ON STATE HIGHWAY 137 FOR 0.25 MILE TO A EXXON
 JV6554'GAS STATION ON THE RIGHT AND THE MARK ON THE RIGHT, 34 FEET
 JV6554'EAST-NORTHEAST OF A POWERLINE POLE NUMBERED 230439, 24.5 FEET SOUTH
 JV6554'OF THE CENTER OF STATE HIGHWAY 137 AND 2 FEET NORTHEAST OF THE CENTER
 JV6554'OF A MANHOLE IN THE 6-FOOT CATCH BASIN.
 JV6554'THE MARK IS 18.5 METERS  SSW FROM  A WITNESS POST
 JV6554'THE MARK IS 0.3 M ABOVE HIGHWAY 137.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5708 ***********************************************************************
 HV5708  DESIGNATION -  HERR
 HV5708  PID         -  HV5708
 HV5708  STATE/COUNTY-  MD/QUEEN ANNES
 HV5708  COUNTRY     -  US
 HV5708  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5708
 HV5708                         *CURRENT SURVEY CONTROL
 HV5708  ______________________________________________________________________
 HV5708* NAD 83(1991) POSITION- 38 50 07.07745(N) 076 12 50.55851(W)   ADJUSTED
 HV5708* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5708  ______________________________________________________________________
 HV5708  GEOID HEIGHT    -        -34.238 (meters)                     GEOID18
 HV5708  LAPLACE CORR    -         -4.75  (seconds)                    DEFLEC18
 HV5708  HORZ ORDER      -  THIRD
 HV5708
 HV5708.The horizontal coordinates were established by classical geodetic methods
 HV5708.and adjusted by the National Geodetic Survey in January 1992.
 HV5708
 HV5708.The orthometric height was scaled from a topographic map.
 HV5708
 HV5708.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5708.GEOID18 height accuracy estimate available here.
 HV5708
 HV5708.Click photographs - Photos may exist for this station.
 HV5708
 HV5708.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5708
 HV5708. The following values were computed from the NAD 83(1991) position.
 HV5708
 HV5708;                    North         East     Units Scale Factor Converg.
 HV5708;SPC MD       -   130,016.796   468,237.852   MT  0.99995010   +0 29 35.9
 HV5708;SPC MD       -   426,563.44  1,536,210.35   sFT  0.99995010   +0 29 35.9
 HV5708;UTM  18      - 4,299,199.936   394,628.814   MT  0.99973672   -0 45 41.0
 HV5708
 HV5708!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5708!SPC MD       -   1.00000541  x   0.99995010  =   0.99995551
 HV5708!UTM  18      -   1.00000541  x   0.99973672  =   0.99974213
 HV5708
 HV5708:                Primary Azimuth Mark                     Grid Az
 HV5708:SPC MD       -  SETH                                     258 38 39.4
 HV5708:UTM  18      -  SETH                                     259 53 56.3
 HV5708
 HV5708_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9462899199(NAD 83)
 HV5708
 HV5708|---------------------------------------------------------------------|
 HV5708| PID    Reference Object                     Distance      Geod. Az  |
 HV5708|                                                           dddmmss.s |
 HV5708| HV5659 SETH                                APPROX. 3.1 KM 2590815.3 |
 HV5708| HV6250 RICH NECK MANOR LARGE TANK          APPROX. 5.0 KM 2823328.6 |
 HV5708|---------------------------------------------------------------------|
 HV5708
 HV5708                          SUPERSEDED SURVEY CONTROL
 HV5708
 HV5708  NAD 83(1986)-  38 50 07.07316(N)    076 12 50.57195(W) AD(       ) 3
 HV5708  NAD 27      -  38 50 06.63200(N)    076 12 51.76400(W) AD(       ) 3
 HV5708  USSD        -  38 50 07.01800(N)    076 12 51.54100(W) AD(       ) 3
 HV5708
 HV5708.Superseded values are not recommended for survey control.
 HV5708
 HV5708.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5708.See file dsdata.pdf to determine how the superseded data were derived.
 HV5708
 HV5708_MARKER: Z = SEE DESCRIPTION
 HV5708_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5708_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5708+STABILITY: SURFACE MOTION
 HV5708
 HV5708  HISTORY     - Date     Condition        Report By
 HV5708  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5708  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5708
 HV5708                          STATION DESCRIPTION
 HV5708
 HV5708'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5708'IN MILES RIVER, ABOUT 1-1/4 MILES SW OF ENTRANCE TO WYE RIVER, ON
 HV5708'SANDY GROUND IN THE CENTER OF HERRING ISLAND, ABOUT 2 FEET ABOVE
 HV5708'HIGH WATER, 30 YARDS NE OF SHORE AND 30 YARDS SW OF SHORE. STATION
 HV5708'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5708'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5708'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE LETTERS
 HV5708'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. THE
 HV5708'SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED
 HV5708'WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT. DISTANCES
 HV5708'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LEFT
 HV5708'CHIMNEY OF SETH HOUSE, 2 MILES S 76 DEG 16 MIN W.  N CHIMNEY OF
 HV5708'HOUSE, 2-3/8 MILES, S 87 DEG 59 MIN W.  N CHIMNEY OF HOUSE ON
 HV5708'TILGHMANS POINT FARM, 2-7/8 MILES, N 60 DEG 58 MIN W. RIGHT
 HV5708'TANGENT OF TILGHMANS POINT, 2-7/8 MILES, N 46 DEG 19 MIN W. N
 HV5708'CHIMNEY OF SMALL HOUSE, 2-3/4 MILES, N 31 DEG 33 MIN E.  CUPOLA OF
 HV5708'BARN, 1-1/2 MILES, N 71 DEG 51 MIN E.  N GABLE OF BARN, 1-3/4
 HV5708'MILES, S 58 DEG 46 MIN E.  E GABLE OF BARN, 3 MILES, S 47 DEG 46
 HV5708'MIN E.
 HV5708
 HV5708                          STATION RECOVERY (1940)
 HV5708
 HV5708'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5708'STATION MARK IS ON HERRING ISLAND, WHICH IS NOW COVERED BY 2 TO 4
 HV5708'FEET OF WATER AT LOW TIDE.  IT IS RECOMMENDED THAT THIS STATION BE
 HV5708'CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5064 ***********************************************************************
 JV5064  DESIGNATION -  HERRING
 JV5064  PID         -  JV5064
 JV5064  STATE/COUNTY-  MD/KENT
 JV5064  COUNTRY     -  US
 JV5064  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5064
 JV5064                         *CURRENT SURVEY CONTROL
 JV5064  ______________________________________________________________________
 JV5064* NAD 83(1991) POSITION- 39 06 39.92806(N) 076 12 58.59203(W)   ADJUSTED
 JV5064* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5064  ______________________________________________________________________
 JV5064  GEOID HEIGHT    -        -33.432 (meters)                     GEOID18
 JV5064  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 JV5064  HORZ ORDER      -  THIRD
 JV5064
 JV5064.The horizontal coordinates were established by classical geodetic methods
 JV5064.and adjusted by the National Geodetic Survey in January 1992.
 JV5064
 JV5064.The orthometric height was scaled from a topographic map.
 JV5064
 JV5064.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5064.GEOID18 height accuracy estimate available here.
 JV5064
 JV5064.Click photographs - Photos may exist for this station.
 JV5064
 JV5064.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5064
 JV5064. The following values were computed from the NAD 83(1991) position.
 JV5064
 JV5064;                    North         East     Units Scale Factor Converg.
 JV5064;SPC MD       -   160,629.562   467,781.276   MT  0.99995826   +0 29 30.8
 JV5064;SPC MD       -   526,998.82  1,534,712.40   sFT  0.99995826   +0 29 30.8
 JV5064;UTM  18      - 4,329,808.744   394,843.825   MT  0.99973616   -0 46 02.4
 JV5064
 JV5064!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5064!SPC MD       -   1.00000528  x   0.99995826  =   0.99996354
 JV5064!UTM  18      -   1.00000528  x   0.99973616  =   0.99974144
 JV5064
 JV5064:                Primary Azimuth Mark                     Grid Az
 JV5064:SPC MD       -  NO ROAD                                  164 47 08.6
 JV5064:UTM  18      -  NO ROAD                                  166 02 41.8
 JV5064
 JV5064_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9484329808(NAD 83)
 JV5064
 JV5064|---------------------------------------------------------------------|
 JV5064| PID    Reference Object                     Distance      Geod. Az  |
 JV5064|                                                           dddmmss.s |
 JV5064| JV5069 NO ROAD                             APPROX. 0.7 KM 1651639.4 |
 JV5064| JV5092 GRAY                                APPROX. 0.5 KM 2241133.1 |
 JV5064|---------------------------------------------------------------------|
 JV5064
 JV5064                          SUPERSEDED SURVEY CONTROL
 JV5064
 JV5064  NAD 83(1986)-  39 06 39.92276(N)    076 12 58.60354(W) AD(       ) 3
 JV5064  NAD 27      -  39 06 39.51900(N)    076 12 59.76100(W) AD(       ) 3
 JV5064  USSD        -  39 06 39.91800(N)    076 12 59.60900(W) AD(       ) 3
 JV5064
 JV5064.Superseded values are not recommended for survey control.
 JV5064
 JV5064.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5064.See file dsdata.pdf to determine how the superseded data were derived.
 JV5064
 JV5064_MARKER: H = DRILL HOLE
 JV5064_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5064_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5064+STABILITY: SURFACE MOTION
 JV5064
 JV5064  HISTORY     - Date     Condition        Report By
 JV5064  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5064  HISTORY     - 1939     SEE DESCRIPTION  CGS
 JV5064  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5064
 JV5064                          STATION DESCRIPTION
 JV5064
 JV5064'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5064'STATION IS ON THE EASTERN SHORE OF UPPER GRAYS INN CREEK, ABOUT
 JV5064'1-7/8 MILES NW OF CHESTER RIVER, AT N SIDE OF ENTRANCE TO
 JV5064'HERRINGTOWN CREEK, AND ABOUT 5/8 MILE ESE OF LEARYS SAWMILL, IN A
 JV5064'MARSH MEADOW, ABOUT 2 FEET ABOVE HIGH WATER, 20 YARDS N OF SHORE,
 JV5064'5 YARDS W OF RAIL FENCE, 7 YARDS S OF LONE DEAD PINE TREE, 75
 JV5064'YARDS S OF A LONE CEDAR TREE, AND IN CENTER OF TRIANGLE FORMED BY
 JV5064'THREE PINE STUBS DRIVEN FLUSH WITH MARSH TO SUPPORT
 JV5064'THEODOLITE.
 JV5064'
 JV5064'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5064'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5064'2 FEET LONG, WITH TOP PROJECTING 6 INCHES.  THE LETTERS M.S.F.C.
 JV5064'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS
 JV5064'CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES BELOW
 JV5064'THE BASE OF THE MONUMENT.
 JV5064'
 JV5064'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5064'FOLLOWS-N CHIMNEY OF HOUSE, 1/2 MILE, S 43 DEG 45 MIN W  NAIL IN BLAZE
 JV5064'IN 30-INCH DEAD PINE TREE, 6.66 METERS (21.85 FEET), N 06 DEG
 JV5064'47 MIN E.  CHIMNEY OF HOUSE, 3/8 MILE, N 20 DEG 57 MIN E. CHIMNEY OF
 JV5064'HOUSE, 1/4 MILE, N 29 DEG 10 MIN E. E CHIMNEY OF HOUSE, 1/2 MILE,
 JV5064'N 79 DEG 05 MIN E. W CHIMNEY OF HOUSE, 300 YARDS, S 74 DEG 41 MIN E.
 JV5064
 JV5064                          STATION RECOVERY (1939)
 JV5064
 JV5064'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5064'SUBSURFACE MARK (2-INCH TILE, 3 FEET UNDERGROUND) RECOVERED IN GOOD
 JV5064'CONDITION.  SURFACE MONUMENT WAS NOT RECOVERED.  THE PINE STAKES
 JV5064'WERE STILL IN THE GROUND.
 JV5064'
 JV5064'STATION IS ON THE EASTERN SHORE OF UPPER GRAYS INN CREEK AT THE N
 JV5064'SIDE OF THE ENTRANCE TO HERRINGTOWN CREEK, ON THE W SIDE OF THE
 JV5064'SMALLEST AND SOUTHERLY OF TWO SMALL COVES, APPROXIMATELY 400 METERS
 JV5064'W OF HERRINGTOWN CREEK OYSTER HOUSE.
 JV5064'
 JV5064'STATION IS 65 METERS S OF A SMALL COTTAGE, 20 METERS N OF
 JV5064'HIGH-WATER LINE, AND 3 METERS W OF A WIRE FENCE.
 JV5064'
 JV5064'TO REACH THE STATION FROM ROCK HALL POST OFFICE GO E TOWARD
 JV5064'CHESTERTOWN FOR 0.8 MILE, TURN RIGHT FOR 1.25 MILES, TURN RIGHT AND
 JV5064'FOLLOW ROAD FOR 0.9 MILE, TURN RIGHT INTO LANE ALONG N SIDE OF
 JV5064'FENCE.  FOLLOW LANE FOR 0.15 MILE TO COTTAGE.  STATION IS 65
 JV5064'METERS S OF THE COTTAGE IN A MARSHY FIELD.
 JV5064'
 JV5064'STATION WAS NOT OCCUPIED.
 JV5064
 JV5064                          STATION RECOVERY (1961)
 JV5064
 JV5064'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5064'STATION SURFACE MARK WAS REPORTED LOST IN 1939.  A SEARCH OF THE
 JV5064'AREA FAILED TO REVEAL ANY REFERENCE POINTS FROM WHICH THE
 JV5064'SUB-SURFACE MARK COULD BE LOCATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3544 ***********************************************************************
 JU3544  DESIGNATION -  HERRINGS
 JU3544  PID         -  JU3544
 JU3544  STATE/COUNTY-  MD/KENT
 JU3544  COUNTRY     -  US
 JU3544  USGS QUAD   -  MILLINGTON (2016)
 JU3544
 JU3544                         *CURRENT SURVEY CONTROL
 JU3544  ______________________________________________________________________
 JU3544* NAD 83(1991) POSITION- 39 21 33.58980(N) 075 45 55.44938(W)   ADJUSTED
 JU3544* NAVD 88 ORTHO HEIGHT -    21.0   (meters)       69.    (feet) VERTCON3
 JU3544  ______________________________________________________________________
 JU3544  GEOID HEIGHT    -        -33.592 (meters)                     GEOID18
 JU3544  LAPLACE CORR    -         -1.20  (seconds)                    DEFLEC18
 JU3544  HORZ ORDER      -  SECOND
 JU3544
 JU3544.The horizontal coordinates were established by classical geodetic methods
 JU3544.and adjusted by the National Geodetic Survey in January 1992.
 JU3544
 JU3544.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3544.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3544
 JU3544.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3544.GEOID18 height accuracy estimate available here.
 JU3544
 JU3544.Click photographs - Photos may exist for this station.
 JU3544
 JU3544.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3544
 JU3544. The following values were computed from the NAD 83(1991) position.
 JU3544
 JU3544;                    North         East     Units Scale Factor Converg.
 JU3544;SPC MD       -   188,616.814   506,400.883   MT  0.99998540   +0 46 29.6
 JU3544;SPC MD       -   618,820.33  1,661,416.90   sFT  0.99998540   +0 46 29.6
 JU3544;UTM  18      - 4,356,932.441   434,058.594   MT  0.99965354   -0 29 07.5
 JU3544
 JU3544!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3544!SPC MD       -   1.00000198  x   0.99998540  =   0.99998738
 JU3544!UTM  18      -   1.00000198  x   0.99965354  =   0.99965552
 JU3544
 JU3544_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3405856932(NAD 83)
 JU3544
 JU3544|---------------------------------------------------------------------|
 JU3544| PID    Reference Object                     Distance      Geod. Az  |
 JU3544|                                                           dddmmss.s |
 JU3544| JU3543 BDY MON 62 DEL MD                    25.250 METERS 07232     |
 JU3544| CB2064 HERRINGS RM 1                        18.327 METERS 07618     |
 JU3544| CB2065 HERRINGS RM 2                        21.229 METERS 29031     |
 JU3544| JU3547 HERRINGS AZIMUTH MARK               287.121 METERS 30816     |
 JU3544|---------------------------------------------------------------------|
 JU3544
 JU3544                          SUPERSEDED SURVEY CONTROL
 JU3544
 JU3544  NAD 83(1986)-  39 21 33.58192(N)    075 45 55.45819(W) AD(       ) 2
 JU3544  NAD 27      -  39 21 33.17810(N)    075 45 56.69740(W) AD(       ) 2
 JU3544  NGVD 29 (07/19/86)   21.2    (m)           70.     (f) VERT ANG       
 JU3544
 JU3544.Superseded values are not recommended for survey control.
 JU3544
 JU3544.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3544.See file dsdata.pdf to determine how the superseded data were derived.
 JU3544
 JU3544_MARKER: DS = TRIANGULATION STATION DISK
 JU3544_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3544_STAMPING: HERRINGS 1961
 JU3544_MARK LOGO: CGS
 JU3544_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3544+STABILITY: SURFACE MOTION
 JU3544
 JU3544  HISTORY     - Date     Condition        Report By
 JU3544  HISTORY     - 1961     MONUMENTED       CGS
 JU3544
 JU3544                          STATION DESCRIPTION
 JU3544
 JU3544'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3544'THE STATION IS LOCATED ABOUT 4-1/2 MILES SOUTHWEST OF TOWNSEND,
 JU3544'DELAWARE, 2.0 MILES SOUTHEAST OF SASSAFRAS MARYLAND AND 1.5 MILES
 JU3544'NORTH-NORTHEAST OF GOLTS MARYLAND.
 JU3544'
 JU3544'TO REACH THE STATION FROM THE RAILROAD STATION IN TOWNSEND
 JU3544'DELAWARE, GO SOUTHWESTERLY ON PAVED ROAD FOR 4.75 MILES TO A
 JU3544'CROSSROAD, CONTINUE SOUTHWESTERLY ON PAVED ROAD FOR 0.4 MILE TO
 JU3544'A FIELD ROAD LEFT, TURN LEFT AND GO EASTERLY ON FIELD ROAD FOR
 JU3544'0.08 MILE TO THE AZIMUTH MARK.  FROM THE AZIMUTH MARK PACK
 JU3544'SOUTH-SOUTHEAST FOR 0.18 MILE TO THE STATION.
 JU3544'
 JU3544'STATION, IS A STANDARD DISK SET IN THE TOP OF A 10 X 10 INCH
 JU3544'CONCRETE MONUMENT WHICH PROJECTS ABOUT 1-INCH ABOVE THE SURFACE
 JU3544'OF THE GROUND, STAMPED HERRINGS 1961.  IT IS 16.8 FEET WEST OF A
 JU3544'8-INCH OAK TREE, 8.9 FEET SOUTH OF A 16-INCH OAK TREE WITH A
 JU3544'TRIANGULAR BLAZE AND 4.6 FEET NORTHEAST OF A 8-INCH OAK TREE.
 JU3544'
 JU3544'REFERENCE MARK 1, IS A STANDARD DISK SET IN THE TOP OF A CONCRETE
 JU3544'MONUMENT WHICH IS FLUSH WITH THE SURFACE OF THE GROUND, STAMPED
 JU3544'HERRINGSNO 1 1961.  IT IS 74.0 FEET EAST-SOUTHEAST OF A 16-INCH
 JU3544'TRIANGULAR BLAZED WHITE OAK TREE, 73.5 FEET EAST OF A 8-INCH
 JU3544'WHITE OAK TREE AND 53.6 FEET EAST OF A WHITE OAK TREE WITH A
 JU3544'STANDARD METAL WITNESS MARKER ATTACHED TO IT.
 JU3544'
 JU3544'REFERENCE MARK 2, IS A STANDARD DISK SET IN THE TOP OF A 10 X 10
 JU3544'INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 1-INCH ABOVE THE
 JU3544'SURFACE OF THE GROUND, STAMPED HERRINGS NO 2 1961.  IT IS 75.8
 JU3544'FEET WEST OF A 8-INCH WHITE OAK TREE WITH A STANDARD METAL WITNESS
 JU3544'MARKER ATTACHED TO IT, 59.0 FEET NORTHWEST OF A 8-INCH TRIANGULAR
 JU3544'BLAZED WHITE OAK TREE AND 53.6 FEET WEST OF A 16-INCH TRIANGULAR
 JU3544'BLAZED WHITE OAK TREE.
 JU3544'
 JU3544'AZIMUTH MARK, IS A STANDARD DISK SET IN THE TOP OF A CONCRETE
 JU3544'CYLINDER WHICH IS ABOUT 14 INCHES BELOW THE SURFACE OF THE
 JU3544'GROUND, STAMPED HERRINGS 1961.  IT IS 1.0 FOOT SOUTH OF A STANDARD
 JU3544'METAL WITNESS POST AND MARKER.
 JU3544'
 JU3544'BOUNDARY MONUMENT 62, IS A 12 X 12 INCH SQUARE GRANITE STONE
 JU3544'WHICH PROJECTS ABOUT 24 INCHES ABOVE THE GROUND AND IS LEANING
 JU3544'TO THE SOUTH AT A 65 DEG ANGLE.  THE APPROXIMATE CENTER OF THE
 JU3544'MONUMENT WAS OBSERVED AND TAPED TO.  IT IS 86.0 FEET
 JU3544'EAST-SOUTHEAST OF A 16-INCH TRIANGULAR BLAZED WHITE OAK TREE, 85.5
 JU3544'FEET EAST OF A 8-INCH TRIANGULAR BLAZED WHITE OAK TREE AND
 JU3544'65.6 FEET EAST OF A 8-INCH WHITE OAK TREE WITH A STANDARD
 JU3544'METAL WITNESS MARKER ATTACHED TO IT.
 JU3544'
 JU3544'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3547 ***********************************************************************
 JU3547  DESIGNATION -  HERRINGS AZIMUTH MARK
 JU3547  PID         -  JU3547
 JU3547  STATE/COUNTY-  MD/KENT
 JU3547  COUNTRY     -  US
 JU3547  USGS QUAD   -  MILLINGTON (2016)
 JU3547
 JU3547                         *CURRENT SURVEY CONTROL
 JU3547  ______________________________________________________________________
 JU3547* NAD 83(1991) POSITION- 39 21 39.35602(N) 075 46 04.86538(W)   ADJUSTED
 JU3547* NAVD 88 ORTHO HEIGHT -    19.2   (meters)       63.    (feet) VERTCON3
 JU3547  ______________________________________________________________________
 JU3547  GEOID HEIGHT    -        -33.588 (meters)                     GEOID18
 JU3547  LAPLACE CORR    -         -1.15  (seconds)                    DEFLEC18
 JU3547  HORZ ORDER      -  SECOND
 JU3547
 JU3547.The horizontal coordinates were established by classical geodetic methods
 JU3547.and adjusted by the National Geodetic Survey in January 1992.
 JU3547
 JU3547.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3547.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3547
 JU3547.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3547.GEOID18 height accuracy estimate available here.
 JU3547
 JU3547.Click photographs - Photos may exist for this station.
 JU3547
 JU3547.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3547
 JU3547. The following values were computed from the NAD 83(1991) position.
 JU3547
 JU3547;                    North         East     Units Scale Factor Converg.
 JU3547;SPC MD       -   188,791.578   506,173.082   MT  0.99998563   +0 46 23.6
 JU3547;SPC MD       -   619,393.70  1,660,669.52   sFT  0.99998563   +0 46 23.6
 JU3547;UTM  18      - 4,357,112.113   433,834.766   MT  0.99965390   -0 29 13.6
 JU3547
 JU3547!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3547!SPC MD       -   1.00000226  x   0.99998563  =   0.99998789
 JU3547!UTM  18      -   1.00000226  x   0.99965390  =   0.99965616
 JU3547
 JU3547:                Primary Azimuth Mark                     Grid Az
 JU3547:SPC MD       -  COLDWELL                                 005 18 28.3
 JU3547:UTM  18      -  COLDWELL                                 006 34 05.5
 JU3547
 JU3547_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3383457112(NAD 83)
 JU3547
 JU3547|---------------------------------------------------------------------|
 JU3547| PID    Reference Object                     Distance      Geod. Az  |
 JU3547|                                                           dddmmss.s |
 JU3547| JU3545 COLDWELL                            APPROX. 1.4 KM 0060451.9 |
 JU3547| JU3544 HERRINGS                            287.121 METERS 12816     |
 JU3547|---------------------------------------------------------------------|
 JU3547
 JU3547                          SUPERSEDED SURVEY CONTROL
 JU3547
 JU3547  NAD 83(1986)-  39 21 39.34816(N)    075 46 04.87417(W) AD(       ) 2
 JU3547  NAD 27      -  39 21 38.94440(N)    075 46 06.11310(W) AD(       ) 2
 JU3547  NGVD 29 (07/19/86)   19.4    (m)           64.     (f) VERT ANG       
 JU3547
 JU3547.Superseded values are not recommended for survey control.
 JU3547
 JU3547.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3547.See file dsdata.pdf to determine how the superseded data were derived.
 JU3547
 JU3547_MARKER: DZ = AZIMUTH MARK DISK
 JU3547_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3547_STAMPING: HERRINGS 1961
 JU3547_MARK LOGO: CGS
 JU3547_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3547+STABILITY: SURFACE MOTION
 JU3547
 JU3547  HISTORY     - Date     Condition        Report By
 JU3547  HISTORY     - 1961     MONUMENTED       CGS
 JU3547
 JU3547                          STATION DESCRIPTION
 JU3547
 JU3547'DESCRIBED BY COAST AND GEODETIC SURVEY 1961 (RWT)
 JU3547'(THERE WERE NO REFERENCE MARKS TAKEN AT THIS STATION.)
 JU3547'
 JU3547'THE STATION IS LOCATED ABOUT 4-1/2 MILES SOUTHWEST OF TOWNSEND
 JU3547'DELAWARE, 2.0 MILES SOUTHEAST OF SASSAFRAS MARYLAND AND 1-1/2 MILES
 JU3547'NORTH-NORTHEAST OF GOLTS MARYLAND.
 JU3547'
 JU3547'TO REACH THE STATION FROM THE RAILROAD STATION IN TOWNSEND DELAWARE,
 JU3547'GO SOUTHWESTERLY ON PAVED ROAD FOR 4.75 MILES TO A CROSSROAD,
 JU3547'CONTINUE SOUTHWESTERLY ON PAVED ROAD FOR 0.4 MILE TO A FIELD ROAD
 JU3547'LEFT, TURN LEFT AND GO EASTERLY ON FIELD ROAD FOR 0.08 MILE TO THE
 JU3547'STATION.
 JU3547'
 JU3547'AZIMUTH MARK, IS A STANDARD DISK SET IN THE TOP OF A CONCRETE
 JU3547'CYLINDER WHICH IS ABOUT 14 INCHES BELOW THE SURFACE OF THE GROUND,
 JU3547'STAMPED HERRINGS 1961.  IT IS 1.0 FEET SOUTH OF A STANDARD METAL
 JU3547'WITNESS POST AND MARKER.
 JU3547'
 JU3547'HEIGHT OF LIGHT ABOVE STATION MARK 1 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0582 ***********************************************************************
 HV0582  DESIGNATION -  HEWITT RM 2
 HV0582  PID         -  HV0582
 HV0582  STATE/COUNTY-  MD/ST MARYS
 HV0582  COUNTRY     -  US
 HV0582  USGS QUAD   -  PINEY POINT (2016)
 HV0582
 HV0582                         *CURRENT SURVEY CONTROL
 HV0582  ______________________________________________________________________
 HV0582* NAD 83(1986) POSITION- 38 12 30.92   (N) 076 30 43.87   (W)   HD_HELD1
 HV0582* NAVD 88 ORTHO HEIGHT -    32.618 (meters)      107.01  (feet) ADJUSTED
 HV0582  ______________________________________________________________________
 HV0582  GEOID HEIGHT    -        -34.449 (meters)                     GEOID18
 HV0582  DYNAMIC HEIGHT  -         32.597 (meters)      106.95  (feet) COMP
 HV0582  MODELED GRAVITY -    979,999.5   (mgal)                       NAVD 88
 HV0582
 HV0582  VERT ORDER      -  FIRST     CLASS II
 HV0582
 HV0582.The horizontal coordinates were determined by differentially corrected
 HV0582.hand held GPS observations or other comparable positioning techniques
 HV0582.and have an estimated accuracy of +/- 3 meters.
 HV0582
 HV0582.The orthometric height was determined by differential leveling and
 HV0582.adjusted by the NATIONAL GEODETIC SURVEY
 HV0582.in June 1991.
 HV0582
 HV0582.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0582.GEOID18 height accuracy estimate available here.
 HV0582
 HV0582.Click photographs - Photos may exist for this station.
 HV0582
 HV0582.The dynamic height is computed by dividing the NAVD 88
 HV0582.geopotential number by the normal gravity value computed on the
 HV0582.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0582.degrees latitude (g = 980.6199 gals.).
 HV0582
 HV0582.The modeled gravity was interpolated from observed gravity values.
 HV0582
 HV0582;                    North         East    Units  Estimated Accuracy
 HV0582;SPC MD       -    60,270.2     442,724.8     MT  (+/- 3 meters HH1 GPS) 
 HV0582
 HV0582_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6760730039(NAD 83)
 HV0582
 HV0582                          SUPERSEDED SURVEY CONTROL
 HV0582
 HV0582  NGVD 29 (11/26/84)   32.906  (m)          107.96   (f) ADJUSTED    1 2
 HV0582
 HV0582.Superseded values are not recommended for survey control.
 HV0582
 HV0582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0582.See file dsdata.pdf to determine how the superseded data were derived.
 HV0582
 HV0582_MARKER: DR = REFERENCE MARK DISK
 HV0582_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0582_STAMPING: HEWITT NO 2 1934
 HV0582_MARK LOGO: CGS
 HV0582_PROJECTION: PROJECTING 8 CENTIMETERS
 HV0582_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0582+STABILITY: SURFACE MOTION
 HV0582
 HV0582  HISTORY     - Date     Condition        Report By
 HV0582  HISTORY     - 1934     MONUMENTED       CGS
 HV0582  HISTORY     - 1965     MARK NOT FOUND   CGS
 HV0582  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0582
 HV0582                          STATION DESCRIPTION
 HV0582
 HV0582'DESCRIBED BY COAST AND GEODETIC SURVEY 1965
 HV0582'1.3 MI N FROM VALLEY LEE.
 HV0582'ABOUT 1.3 MILES NORTH ALONG STATE HIGHWAY 249 FROM THE ROAD
 HV0582'JUNCTION AT VALLEY LEE, ST. MARYS COUNTY, ABOUT 110 FEET SOUTHEAST
 HV0582'ACROSS THE HIGHWAY FROM TRIANGULATION STATION HEWITT, DESCRIBED
 HV0582'ABOVE, AND 25.8 FEET EAST OF THE CENTER LINE OF THE HIGHWAY.
 HV0582'A STANDARD DISK AND SET IN THE TOP OF A CONCRETE POST.  NOTE-- THE
 HV0582'DISTANCE GIVEN TO MARK FROM CENTERLINE NOW COMES IN THE BACKSLOPE
 HV0582'OF THE DITCH.  THE HIGHWAY HAS BEEN IMPROVED AND WIDENED
 HV0582'CONSIDERABLY.
 HV0582
 HV0582                          STATION RECOVERY (1971)
 HV0582
 HV0582'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0582'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0584 ***********************************************************************
 HV0584  DESIGNATION -  HEWITT RM 3
 HV0584  PID         -  HV0584
 HV0584  STATE/COUNTY-  MD/ST MARYS
 HV0584  COUNTRY     -  US
 HV0584  USGS QUAD   -  PINEY POINT (2016)
 HV0584
 HV0584                         *CURRENT SURVEY CONTROL
 HV0584  ______________________________________________________________________
 HV0584* NAD 83(1986) POSITION- 38 12 20.     (N) 076 30 41.     (W)   SCALED
 HV0584* NAVD 88 ORTHO HEIGHT -    26.990 (meters)       88.55  (feet) ADJUSTED
 HV0584  ______________________________________________________________________
 HV0584  GEOID HEIGHT    -        -34.457 (meters)                     GEOID18
 HV0584  DYNAMIC HEIGHT  -         26.973 (meters)       88.49  (feet) COMP
 HV0584  MODELED GRAVITY -    979,999.2   (mgal)                       NAVD 88
 HV0584
 HV0584  VERT ORDER      -  FIRST     CLASS II
 HV0584
 HV0584.The horizontal coordinates were scaled from a map and have
 HV0584.an estimated accuracy of +/- 6 seconds.
 HV0584
 HV0584.The orthometric height was determined by differential leveling and
 HV0584.adjusted by the NATIONAL GEODETIC SURVEY
 HV0584.in June 1991.
 HV0584
 HV0584.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0584.GEOID18 height accuracy estimate available here.
 HV0584
 HV0584.Click photographs - Photos may exist for this station.
 HV0584
 HV0584.The dynamic height is computed by dividing the NAVD 88
 HV0584.geopotential number by the normal gravity value computed on the
 HV0584.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0584.degrees latitude (g = 980.6199 gals.).
 HV0584
 HV0584.The modeled gravity was interpolated from observed gravity values.
 HV0584
 HV0584;                    North         East    Units  Estimated Accuracy
 HV0584;SPC MD       -    59,930.      442,800.      MT  (+/- 180 meters Scaled)
 HV0584
 HV0584_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH676297(NAD 83)
 HV0584
 HV0584                          SUPERSEDED SURVEY CONTROL
 HV0584
 HV0584  NGVD 29 (11/26/84)   27.279  (m)           89.50   (f) ADJUSTED    1 2
 HV0584
 HV0584.Superseded values are not recommended for survey control.
 HV0584
 HV0584.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0584.See file dsdata.pdf to determine how the superseded data were derived.
 HV0584
 HV0584_MARKER: DR = REFERENCE MARK DISK
 HV0584_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0584_STAMPING: HEWITT NO 3 1934
 HV0584_MARK LOGO: CGS
 HV0584_PROJECTION: PROJECTING 15 CENTIMETERS
 HV0584_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0584+STABILITY: SURFACE MOTION
 HV0584
 HV0584  HISTORY     - Date     Condition        Report By
 HV0584  HISTORY     - 1934     MONUMENTED       CGS
 HV0584  HISTORY     - 1965     MARK NOT FOUND   CGS
 HV0584  HISTORY     - 1971     MARK NOT FOUND   NGS
 HV0584
 HV0584                          STATION DESCRIPTION
 HV0584
 HV0584'DESCRIBED BY COAST AND GEODETIC SURVEY 1965
 HV0584'1 MI N FROM VALLEY LEE.
 HV0584'ABOUT 1 MILE NORTH ALONG STATE HIGHWAY 249 FROM THE ROAD JUNCTION
 HV0584'AT VALLEY LEE, ST. MARYS COUNTY ABOUT 1/4 MILE SOUTH OF
 HV0584'TRIANGULATION STATION HEWITT, DESCRIBED ABOVE, JUST SOUTH OF THE
 HV0584'SOUTHEAST CORNER OF A CULTIVATED FIELD, 24 FEET WEST OF THE CENTER
 HV0584'LINE OF THE HIGHWAY, 12.5 FEET SOUTHWEST OF A POLE, ABOUT 3 FEET
 HV0584'FROM A WITNESS POST, AND ABOUT 4 FEET HIGHER THAN THE PAVEMENT.
 HV0584'A STANDARD REFERENCE-MARK DISK AND SET IN THE TOP OF A CONCRETE
 HV0584'POST.  NOTE-- THE HIGHWAY HAS BEEN IMPROVED AND THE DISTANCE
 HV0584'FROM CENTERLINE OF HIGHWAY TO MARK GIVEN IN THE DESCRIPTION
 HV0584'NOW COMES TO THE BACKSLOPE OF DITCH ALONG HIGHWAY.
 HV0584
 HV0584                          STATION RECOVERY (1971)
 HV0584
 HV0584'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0584'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AA9254 ***********************************************************************
 AA9254  SACS        -  This is a Secondary Airport Control Station.
 AA9254  DESIGNATION -  HGR AP STA A
 AA9254  PID         -  AA9254
 AA9254  STATE/COUNTY-  MD/WASHINGTON
 AA9254  COUNTRY     -  US
 AA9254  USGS QUAD   -  HAGERSTOWN (2016)
 AA9254
 AA9254                         *CURRENT SURVEY CONTROL
 AA9254  ______________________________________________________________________
 AA9254* NAD 83(2011) POSITION- 39 42 30.92924(N) 077 43 21.11955(W)   ADJUSTED
 AA9254* NAD 83(2011) ELLIP HT-   178.373 (meters)        (06/27/12)   ADJUSTED
 AA9254* NAD 83(2011) EPOCH   -  2010.00
 AA9254* NAVD 88 ORTHO HEIGHT -   212.62  (meters)      697.6   (feet) GPS OBS
 AA9254  ______________________________________________________________________
 AA9254  NAVD 88 orthometric height was determined with geoid model    GEOID96
 AA9254  GEOID HEIGHT    -        -34.227 (meters)                     GEOID96
 AA9254  GEOID HEIGHT    -        -34.249 (meters)                     GEOID18
 AA9254  NAD 83(2011) X  -  1,044,853.609 (meters)                     COMP
 AA9254  NAD 83(2011) Y  - -4,801,202.393 (meters)                     COMP
 AA9254  NAD 83(2011) Z  -  4,053,260.903 (meters)                     COMP
 AA9254  LAPLACE CORR    -          2.83  (seconds)                    DEFLEC18
 AA9254
 AA9254  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AA9254  Standards:
 AA9254         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AA9254            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AA9254  -------------------------------------------------------------------
 AA9254  NETWORK    1.86   4.92           0.85   0.64   2.51     -0.11505405
 AA9254  -------------------------------------------------------------------
 AA9254  Click here for local accuracies and other accuracy information.
 AA9254
 AA9254.This mark is at Washington Co Regional Airport (HGR)
 AA9254
 AA9254.The horizontal coordinates were established by GPS observations
 AA9254.and adjusted by the National Geodetic Survey in June 2012.
 AA9254
 AA9254.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AA9254.been affixed to the stable North American tectonic plate. See 
 AA9254.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AA9254
 AA9254.The horizontal coordinates are valid at the epoch date displayed above
 AA9254.which is a decimal equivalence of Year/Month/Day.
 AA9254
 AA9254.The orthometric height was determined by GPS observations and a
 AA9254.high-resolution geoid model.
 AA9254
 AA9254.GPS derived orthometric heights for airport stations designated as
 AA9254.PACS or SACS are published to 2 decimal places.  This maintains
 AA9254.centimeter relative accuracy between the PACS and SACS.  It does
 AA9254.not indicate centimeter accuracy relative to other marks which are
 AA9254.part of the published vertical control network.
 AA9254
 AA9254.Significant digits in the geoid height do not necessarily reflect accuracy.
 AA9254.GEOID18 height accuracy estimate available here.
 AA9254
 AA9254.Click photographs - Photos may exist for this station.
 AA9254
 AA9254.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AA9254
 AA9254.The Laplace correction was computed from DEFLEC18 derived deflections.
 AA9254
 AA9254.The ellipsoidal height was determined by GPS observations
 AA9254.and is referenced to NAD 83.
 AA9254
 AA9254. The following values were computed from the NAD 83(2011) position.
 AA9254
 AA9254;                    North         East     Units Scale Factor Converg.
 AA9254;SPC MD       -   226,920.144   338,035.836   MT  1.00005548   -0 27 12.6
 AA9254;SPC MD       -   744,487.17  1,109,039.24   sFT  1.00005548   -0 27 12.6
 AA9254;UTM  18      - 4,398,958.708   266,604.212   MT  1.00027070   -1 44 24.6
 AA9254
 AA9254!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AA9254!SPC MD       -   0.99997202  x   1.00005548  =   1.00002750
 AA9254!UTM  18      -   0.99997202  x   1.00027070  =   1.00024271
 AA9254
 AA9254_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6660498958(NAD 83)
 AA9254
 AA9254                          SUPERSEDED SURVEY CONTROL
 AA9254
 AA9254  NAD 83(2007)-  39 42 30.92952(N)    077 43 21.12010(W) AD(2002.00) 0
 AA9254  ELLIP H (02/10/07)  178.415  (m)                       GP(2002.00)    
 AA9254  ELLIP H (08/19/02)  178.364  (m)                       GP(       ) 4 2
 AA9254  NAD 83(1991)-  39 42 30.93035(N)    077 43 21.12028(W) AD(       ) 1
 AA9254  ELLIP H (04/02/98)  178.474  (m)                       GP(       ) 4 2
 AA9254  NAD 83(1993)-  39 42 30.92979(N)    077 43 21.12006(W) AD(       ) 1
 AA9254  ELLIP H (11/30/95)  178.498  (m)                       GP(       ) 4 2
 AA9254  NAVD 88 (11/30/95)  212.60   (m)  GEOID93  model used  GPS OBS        
 AA9254
 AA9254.Superseded values are not recommended for survey control.
 AA9254
 AA9254.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AA9254.See file dsdata.pdf to determine how the superseded data were derived.
 AA9254
 AA9254_MARKER: DT = TOPOGRAPHIC STATION DISK
 AA9254_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AA9254_STAMPING: AP 1964 STA A
 AA9254_MARK LOGO: CGS
 AA9254_PROJECTION: FLUSH
 AA9254_MAGNETIC: N = NO MAGNETIC MATERIAL
 AA9254_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AA9254+STABILITY: SURFACE MOTION
 AA9254_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AA9254+SATELLITE: SATELLITE OBSERVATIONS - February 21, 1997
 AA9254
 AA9254  HISTORY     - Date     Condition        Report By
 AA9254  HISTORY     - 1964     MONUMENTED       CGS
 AA9254  HISTORY     - 19930515 GOOD             NGS
 AA9254  HISTORY     - 19940830 GOOD             NGS
 AA9254  HISTORY     - 19970221 GOOD             NGS
 AA9254
 AA9254                          STATION DESCRIPTION
 AA9254
 AA9254'DESCRIBED BY NATIONAL GEODETIC SURVEY 1993
 AA9254'THIS STATION IS LOCATED IN THE EASTERN PORTION OF THE AIRPORT NEAR THE
 AA9254'OLD END OF RUNWAY 27 ABOUT 400 FT (121.9 M) WEST OF THE EAST END OF
 AA9254'THE RUNWAY.  IT IS 150.0 FT (45.7 M) SOUTH OF THE CENTERLINE AT THE
 AA9254'OLD END OF THE RUNWAY.  IT IS 160.5 FT (48.9 M) SOUTHEAST OF 3RD
 AA9254'RUNWAY LIGHT EAST OF THE INTERSECTION OF THE RUNWAY WITH TAXIWAY B
 AA9254'FROM THE RAMP, 119 FT (36.3 M) EAST OF THE C/L EXTENDED OF ABANDONED
 AA9254'ROAD, AND 71.9 FT (21.9 M) SOUTH OF THE 4TH RUNWAY LIGHT EAST OF THE
 AA9254'INTERSECTION OF THE RUNWAY WITH TAXIWAY B.  IT IS STANDARD USCGS
 AA9254'TOPOGRAPHIC STATION DISK, STAMPED AP 1964 STA A, SET IN THE TOP OF A
 AA9254'CONCRETE POST THAT IS FLUSH WITH THE GROUND.
 AA9254
 AA9254                          STATION RECOVERY (1994)
 AA9254
 AA9254'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (SER)
 AA9254'THE STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTH OF HAGERSTOWN, AT
 AA9254'THE WASHINGTON COUNTY REGIONAL AIRPORT, IN THE EASTERN PORTION OF THE
 AA9254'AIRPORT NEAR THE OLD END OF RUNWAY 27 ABOUT 400 FT (121.9 M) WEST OF
 AA9254'THE EAST END OF THE RUNWAY.  OWNERSHIP--COUNTY OF WASHINGTON.
 AA9254'WASHINGTON COUNTY REGIONAL AIRPORT.  18434 SHOWALTER ROAD, HAGARSTOWN,
 AA9254'MD 21742-1347.  CONTACT AIRPORT OPERATION MANAGER CAROLYN S.  MOTZ,
 AA9254'PHONE 301-791-3333.  LOCATED 160.5 FT (48.9 M) SOUTHEAST OF THE 3RD
 AA9254'RUNWAY LIGHT EAST OF THE INTERSECTION OF THE RUNWAY WITH TAXIWAY B
 AA9254'FROM THE RAMP, 150.0 FT (45.7 M) SOUTH FROM THE CENTERLINE OF THE OLD
 AA9254'END OF THE RUNWAY, 119.0 FT (36.3 M) EAST OF THE CENTERLINE OF
 AA9254'EXTENDED OF THE ABANDONED ROAD, 71.9 FT (21.9 M) SOUTH OF THE 4TH
 AA9254'RUNWAY LIGHT EAST OF THE INTERSECTION OF THE RUNWAY WITH TAXIWAY B.
 AA9254
 AA9254                          STATION RECOVERY (1997)
 AA9254
 AA9254'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (AJL)
 AA9254'THE STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTH OF HAGERSTOWN, AT
 AA9254'THE WASHINGTON COUNTY REGIONAL AIRPORT, IN THE EASTERN PORTION OF THE
 AA9254'AIRPORT NEAR THE OLD END OF RUNWAY 27 ABOUT 400 FT (121.9 M) WEST OF
 AA9254'THE EAST END OF THE RUNWAY.  OWNERSHIP--COUNTY OF WASHINGTON.
 AA9254'WASHINGTON COUNTY REGIONAL AIRPORT.  18434 SHOWALTER ROAD, HAGARSTOWN,
 AA9254'MD 21742-1347.  CONTACT AIRPORT OPERATION MANAGER CAROLYN S.  MOTZ,
 AA9254'PHONE 301-791-3333.  LOCATED 160.5 FT (48.9 M) SOUTHEAST OF THE 3RD
 AA9254'RUNWAY LIGHT EAST OF THE INTERSECTION OF THE RUNWAY WITH TAXIWAY B
 AA9254'FROM THE RAMP, 150.0 FT (45.7 M) SOUTH FROM THE CENTERLINE OF THE OLD
 AA9254'END OF THE RUNWAY, 119.0 FT (36.3 M) EAST OF THE CENTERLINE OF
 AA9254'EXTENDED OF THE ABANDONED ROAD, 71.9 FT (21.9 M) SOUTH OF THE 4TH
 AA9254'RUNWAY LIGHT EAST OF THE INTERSECTION OF THE RUNWAY WITH TAXIWAY B.
 AA9254'THE STATION IS A STANDARD USC AND GS TOPOGRAPHIC STATION DISK
 AA9254'STAMPED-- AP 1964 STA A--,SET IN THE TOP OF A ROUND CONCRETE POST.
 AA9254'THIS STATION IS DESIGNATED AS A SECONDARY AIRPORT CONTROL STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7053 ***********************************************************************
 JV7053  PACS        -  This is a Primary Airport Control Station.
 JV7053  DESIGNATION -  HGR AP STA B
 JV7053  PID         -  JV7053
 JV7053  STATE/COUNTY-  MD/WASHINGTON
 JV7053  COUNTRY     -  US
 JV7053  USGS QUAD   -  HAGERSTOWN (2016)
 JV7053
 JV7053                         *CURRENT SURVEY CONTROL
 JV7053  ______________________________________________________________________
 JV7053* NAD 83(2011) POSITION- 39 42 22.05549(N) 077 44 29.79284(W)   ADJUSTED
 JV7053* NAD 83(2011) ELLIP HT-   165.015 (meters)        (06/27/12)   ADJUSTED
 JV7053* NAD 83(2011) EPOCH   -  2010.00
 JV7053* NAVD 88 ORTHO HEIGHT -   199.29  (meters)      653.8   (feet) GPS OBS
 JV7053  ______________________________________________________________________
 JV7053  NAVD 88 orthometric height was determined with geoid model    GEOID96
 JV7053  GEOID HEIGHT    -        -34.251 (meters)                     GEOID96
 JV7053  GEOID HEIGHT    -        -34.273 (meters)                     GEOID18
 JV7053  NAD 83(2011) X  -  1,043,289.993 (meters)                     COMP
 JV7053  NAD 83(2011) Y  - -4,801,710.818 (meters)                     COMP
 JV7053  NAD 83(2011) Z  -  4,053,041.817 (meters)                     COMP
 JV7053  LAPLACE CORR    -          2.83  (seconds)                    DEFLEC18
 JV7053
 JV7053  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7053  Standards:
 JV7053         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7053            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7053  -------------------------------------------------------------------
 JV7053  NETWORK    1.80   4.86           0.82   0.62   2.48     -0.12937865
 JV7053  -------------------------------------------------------------------
 JV7053  Click here for local accuracies and other accuracy information.
 JV7053
 JV7053.This mark is at Washington Co Regional Airport (HGR)
 JV7053
 JV7053.The horizontal coordinates were established by GPS observations
 JV7053.and adjusted by the National Geodetic Survey in June 2012.
 JV7053
 JV7053.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7053.been affixed to the stable North American tectonic plate. See 
 JV7053.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7053
 JV7053.The horizontal coordinates are valid at the epoch date displayed above
 JV7053.which is a decimal equivalence of Year/Month/Day.
 JV7053
 JV7053.The orthometric height was determined by GPS observations and a
 JV7053.high-resolution geoid model.
 JV7053
 JV7053.GPS derived orthometric heights for airport stations designated as
 JV7053.PACS or SACS are published to 2 decimal places.  This maintains
 JV7053.centimeter relative accuracy between the PACS and SACS.  It does
 JV7053.not indicate centimeter accuracy relative to other marks which are
 JV7053.part of the published vertical control network.
 JV7053
 JV7053.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7053.GEOID18 height accuracy estimate available here.
 JV7053
 JV7053.Click photographs - Photos may exist for this station.
 JV7053
 JV7053.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7053
 JV7053.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7053
 JV7053.The ellipsoidal height was determined by GPS observations
 JV7053.and is referenced to NAD 83.
 JV7053
 JV7053. The following values were computed from the NAD 83(2011) position.
 JV7053
 JV7053;                    North         East     Units Scale Factor Converg.
 JV7053;SPC MD       -   226,659.578   336,397.705   MT  1.00005485   -0 27 55.7
 JV7053;SPC MD       -   743,632.30  1,103,664.80   sFT  1.00005485   -0 27 55.7
 JV7053;SPC PA S     -    41,393.367   600,719.623   MT  1.00004329   +0 00 19.6
 JV7053;SPC PA S     -   135,804.74  1,970,860.96   sFT  1.00004329   +0 00 19.6
 JV7053;UTM  18      - 4,398,734.945   264,960.281   MT  1.00028018   -1 45 08.2
 JV7053
 JV7053!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7053!SPC MD       -   0.99997411  x   1.00005485  =   1.00002896
 JV7053!SPC PA S     -   0.99997411  x   1.00004329  =   1.00001740
 JV7053!UTM  18      -   0.99997411  x   1.00028018  =   1.00025429
 JV7053
 JV7053:                Primary Azimuth Mark                     Grid Az
 JV7053:SPC MD       -  HGR ARP                                  080 57 50.3
 JV7053:SPC PA S     -  HGR ARP                                  080 29 35.0
 JV7053:UTM  18      -  HGR ARP                                  082 15 02.8
 JV7053
 JV7053_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6496098734(NAD 83)
 JV7053
 JV7053|---------------------------------------------------------------------|
 JV7053| PID    Reference Object                     Distance      Geod. Az  |
 JV7053|                                                           dddmmss.s |
 JV7053| JV7051 HGR ARP                             APPROX. 1.0 KM 0802954.6 |
 JV7053|---------------------------------------------------------------------|
 JV7053
 JV7053                          SUPERSEDED SURVEY CONTROL
 JV7053
 JV7053  NAD 83(2007)-  39 42 22.05577(N)    077 44 29.79339(W) AD(2002.00) 0
 JV7053  ELLIP H (02/10/07)  165.058  (m)                       GP(2002.00)    
 JV7053  ELLIP H (08/09/02)  165.014  (m)                       GP(       ) 4 2
 JV7053  NAD 83(1991)-  39 42 22.05652(N)    077 44 29.79361(W) AD(       ) B
 JV7053  ELLIP H (03/24/98)  165.124  (m)                       GP(       ) 4 1
 JV7053  NAD 83(1993)-  39 42 22.05596(N)    077 44 29.79339(W) AD(       ) B
 JV7053  ELLIP H (11/22/95)  165.148  (m)                       GP(       ) 1 1
 JV7053  NAD 83(1991)-  39 42 22.05567(N)    077 44 29.79408(W) AD(       ) 2
 JV7053  ELLIP H (03/03/93)  164.996  (m)                       GP(       ) 4 2
 JV7053  NAVD 88 (11/22/95)  199.28   (m)  UNKNOWN  model used  GPS OBS        
 JV7053  NGVD 29             199.53   (m)          654.6    (f) LEVELING    3  
 JV7053
 JV7053.Superseded values are not recommended for survey control.
 JV7053
 JV7053.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7053.See file dsdata.pdf to determine how the superseded data were derived.
 JV7053
 JV7053_MARKER: DT = TOPOGRAPHIC STATION DISK
 JV7053_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7053_STAMPING: AP 1964 STA B
 JV7053_MARK LOGO: CGS
 JV7053_PROJECTION: FLUSH
 JV7053_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7053_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7053+STABILITY: SURFACE MOTION
 JV7053_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7053+SATELLITE: SATELLITE OBSERVATIONS - February 21, 1997
 JV7053
 JV7053  HISTORY     - Date     Condition        Report By
 JV7053  HISTORY     - 1964     MONUMENTED       CGS
 JV7053  HISTORY     - 19930515 GOOD             NGS
 JV7053  HISTORY     - 19940830 GOOD             NGS
 JV7053  HISTORY     - 19970221 GOOD             NGS
 JV7053
 JV7053                          STATION DESCRIPTION
 JV7053
 JV7053'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV7053'STATION IS LOCATED AT WASHINGTON COUNTY MUNICIPAL AIRPORT IN THE WEST
 JV7053'END OF THE AIRPORT NEAR THE WEST END OF THE STOPWAY END OF RUNWAY 9.
 JV7053'IT IS 160.2 FT (48.83 M) WEST OF THE FIRST RUNWAY LIGHT BASE ON THE
 JV7053'SOUTH SIDE OF THE RUNWAY, 150.0 FT (45.72 M) SOUTH OF THE CENTERLINE
 JV7053'END OF THE STOPWAY 9, AND 72.9 FT (22.22 M) SOUTH OF THE SOUTHERLY
 JV7053'THRESHOLD LIGHT BASE.
 JV7053'IT IS A STANDARD USC AND GS TOPOGRAPHIC STATION DISK,
 JV7053'STAMPED ---AP 1964 STA B---, SET IN THE TOP OF A CONCRETE POST
 JV7053'THAT IS FLUSH WITH THE GROUND.
 JV7053
 JV7053                          STATION RECOVERY (1993)
 JV7053
 JV7053'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1993
 JV7053'THE STATION IS LOCATED IN THE WEST END OF THE AIPORT NEAR THE WEST END
 JV7053'OF THE STOPWAY END OF RUNWAY 9.  IT IS 160.2 FT (48.8 M) WEST OF THE
 JV7053'FIRST RUNWAY LIGHT BASE ON THE SOUTH SIDE OF THE RUNWAY, 150.0 FT
 JV7053'(45.7 M) SOUTH OF THE CENTERLINE END OF THE STOPWAY 9, AND 72.9 FT
 JV7053'(22.2 M) SOUTH OF THE SOUTHERLY THRESHOLD LIGHT BASE.  IT IS A
 JV7053'STANDARD USCGS TOPOGRAPHIC STATION DISK, STAMPED AP 1964 STA B, SET IN
 JV7053'TOP OF A CONCRETE POST THAT IS FLUSH WITH THE GROUND.
 JV7053
 JV7053                          STATION RECOVERY (1994)
 JV7053
 JV7053'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (SER)
 JV7053'THE STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTH OF HAGERSTOWN, AT
 JV7053'THE WASHINGTON COUNTY REGIONAL AIRPORT, IN THE WEST END OF THE AIRPORT
 JV7053'NEAR THE WEST END OF THE STOPWAY END OF RUNWAY 9. OWNERSHIP--COUNTY OF
 JV7053'WASHINGTON.  WASHINGTON COUNTY REGIONAL AIRPORT.  18434 SHOWALTER
 JV7053'ROAD, HAGARSTOWN, MD 21742-1347.  CONTACT AIRPORT OPERATION MANAGER
 JV7053'CAROLYN S.  MOTZ, PHONE 301-791-3333. LOCATED 160.2 FT (48.8 M) WEST
 JV7053'OF THE FIRST RUNWAY LIGHT BASE ON THE SOUTH SIDE OF THE RUNWAY, 150.0
 JV7053'FT (45.7 M) SOUTH OF THE CENTERLINE END OF THE STOPWAY, 72.9 FT (22.2
 JV7053'M) SOUTH OF THE SOUTHERLY THRESHOLD LIGHT BASE.
 JV7053
 JV7053                          STATION RECOVERY (1997)
 JV7053
 JV7053'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (AJL)
 JV7053'THE STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTH OF HAGERSTOWN, AT
 JV7053'THE WASHINGTON COUNTY REGIONAL AIRPORT, IN THE WEST END OF THE AIRPORT
 JV7053'NEAR THE WEST END OF THE STOPWAY END OF RUNWAY 9. OWNERSHIP--COUNTY OF
 JV7053'WASHINGTON.  WASHINGTON COUNTY REGIONAL AIRPORT.  18434 SHOWALTER
 JV7053'ROAD, HAGARSTOWN, MD 21742-1347.  CONTACT AIRPORT OPERATION MANAGER
 JV7053'CAROLYN S.  MOTZ, PHONE 301-791-3333. LOCATED 160.2 FT (48.8 M) WEST
 JV7053'OF THE FIRST RUNWAY LIGHT BASE ON THE SOUTH SIDE OF THE RUNWAY, 150.0
 JV7053'FT (45.7 M) SOUTH OF THE CENTERLINE END OF THE STOPWAY, 72.9 FT (22.2
 JV7053'M) SOUTH OF THE SOUTHERLY THRESHOLD LIGHT BASE.  IT IS A STANDARD USC
 JV7053'AND GS TOPOGRAPHIC STATION DISK, STAMPED ---AP 1964 STA B---, SET IN
 JV7053'THE TOP OF A CONCRETE POST THAT IS FLUSH WITH THE GROUND.  THIS
 JV7053'STATION IS DESIGNATED AS A PRIMARY AIRPORT CONTROL STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7051 ***********************************************************************
 JV7051  SACS        -  This is a Secondary Airport Control Station.
 JV7051  DESIGNATION -  HGR ARP
 JV7051  PID         -  JV7051
 JV7051  STATE/COUNTY-  MD/WASHINGTON
 JV7051  COUNTRY     -  US
 JV7051  USGS QUAD   -  HAGERSTOWN (2016)
 JV7051
 JV7051                         *CURRENT SURVEY CONTROL
 JV7051  ______________________________________________________________________
 JV7051* NAD 83(2011) POSITION- 39 42 27.33958(N) 077 43 48.90211(W)   ADJUSTED
 JV7051* NAD 83(2011) ELLIP HT-   175.146 (meters)        (06/27/12)   ADJUSTED
 JV7051* NAD 83(2011) EPOCH   -  2010.00
 JV7051* NAVD 88 ORTHO HEIGHT -   209.41  (meters)      687.0   (feet) GPS OBS
 JV7051  ______________________________________________________________________
 JV7051  NAVD 88 orthometric height was determined with geoid model    GEOID96
 JV7051  GEOID HEIGHT    -        -34.237 (meters)                     GEOID96
 JV7051  GEOID HEIGHT    -        -34.259 (meters)                     GEOID18
 JV7051  NAD 83(2011) X  -  1,044,221.412 (meters)                     COMP
 JV7051  NAD 83(2011) Y  - -4,801,409.775 (meters)                     COMP
 JV7051  NAD 83(2011) Z  -  4,053,173.669 (meters)                     COMP
 JV7051  LAPLACE CORR    -          2.85  (seconds)                    DEFLEC18
 JV7051
 JV7051  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7051  Standards:
 JV7051         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7051            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7051  -------------------------------------------------------------------
 JV7051  NETWORK    1.89   4.96           0.86   0.65   2.53     -0.11362060
 JV7051  -------------------------------------------------------------------
 JV7051  Click here for local accuracies and other accuracy information.
 JV7051
 JV7051.This mark is at Washington Co Regional Airport (HGR)
 JV7051
 JV7051.The horizontal coordinates were established by GPS observations
 JV7051.and adjusted by the National Geodetic Survey in June 2012.
 JV7051
 JV7051.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7051.been affixed to the stable North American tectonic plate. See 
 JV7051.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7051
 JV7051.The horizontal coordinates are valid at the epoch date displayed above
 JV7051.which is a decimal equivalence of Year/Month/Day.
 JV7051
 JV7051.The orthometric height was determined by GPS observations and a
 JV7051.high-resolution geoid model.
 JV7051
 JV7051.GPS derived orthometric heights for airport stations designated as
 JV7051.PACS or SACS are published to 2 decimal places.  This maintains
 JV7051.centimeter relative accuracy between the PACS and SACS.  It does
 JV7051.not indicate centimeter accuracy relative to other marks which are
 JV7051.part of the published vertical control network.
 JV7051
 JV7051.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7051.GEOID18 height accuracy estimate available here.
 JV7051
 JV7051.Click photographs - Photos may exist for this station.
 JV7051
 JV7051.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7051
 JV7051.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7051
 JV7051.The ellipsoidal height was determined by GPS observations
 JV7051.and is referenced to NAD 83.
 JV7051
 JV7051. The following values were computed from the NAD 83(2011) position.
 JV7051
 JV7051;                    North         East     Units Scale Factor Converg.
 JV7051;SPC MD       -   226,814.697   337,373.125   MT  1.00005523   -0 27 30.0
 JV7051;SPC MD       -   744,141.22  1,106,864.99   sFT  1.00005523   -0 27 30.0
 JV7051;SPC PA S     -    41,556.498   601,693.723   MT  1.00004296   +0 00 46.1
 JV7051;SPC PA S     -   136,339.94  1,974,056.82   sFT  1.00004296   +0 00 46.1
 JV7051;UTM  18      - 4,398,868.150   265,939.156   MT  1.00027453   -1 44 42.2
 JV7051
 JV7051!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7051!SPC MD       -   0.99997252  x   1.00005523  =   1.00002775
 JV7051!SPC PA S     -   0.99997252  x   1.00004296  =   1.00001548
 JV7051!UTM  18      -   0.99997252  x   1.00027453  =   1.00024705
 JV7051
 JV7051:                Primary Azimuth Mark                     Grid Az
 JV7051:SPC MD       -  HGR CTRL POINT D                         165 22 04.7
 JV7051:SPC PA S     -  HGR CTRL POINT D                         164 53 48.6
 JV7051:UTM  18      -  HGR CTRL POINT D                         166 39 16.9
 JV7051
 JV7051_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6593998868(NAD 83)
 JV7051
 JV7051|---------------------------------------------------------------------|
 JV7051| PID    Reference Object                     Distance      Geod. Az  |
 JV7051|                                                           dddmmss.s |
 JV7051| JV7052 HGR CTRL POINT D                    499.884 METERS 1645434.7 |
 JV7051| JV7053 HGR AP STA B                        APPROX. 1.0 KM 2603020.7 |
 JV7051|---------------------------------------------------------------------|
 JV7051
 JV7051                          SUPERSEDED SURVEY CONTROL
 JV7051
 JV7051  NAD 83(2007)-  39 42 27.33987(N)    077 43 48.90264(W) AD(2002.00) 0
 JV7051  ELLIP H (02/10/07)  175.190  (m)                       GP(2002.00)    
 JV7051  ELLIP H (08/19/02)  175.143  (m)                       GP(       ) 4 2
 JV7051  NAD 83(1991)-  39 42 27.34063(N)    077 43 48.90289(W) AD(       ) 1
 JV7051  ELLIP H (04/02/98)  175.253  (m)                       GP(       ) 4 2
 JV7051  NAD 83(1993)-  39 42 27.34007(N)    077 43 48.90267(W) AD(       ) 1
 JV7051  ELLIP H (11/30/95)  175.277  (m)                       GP(       ) 4 2
 JV7051  NAD 83(1991)-  39 42 27.33953(N)    077 43 48.90293(W) AD(       ) 2
 JV7051  ELLIP H (03/03/93)  175.143  (m)                       GP(       ) 4 2
 JV7051  NAVD 88 (11/30/95)  209.39   (m)  UNKNOWN  model used  GPS OBS        
 JV7051  NGVD 29             209.64   (m)          687.8    (f) LEVELING    3  
 JV7051
 JV7051.Superseded values are not recommended for survey control.
 JV7051
 JV7051.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7051.See file dsdata.pdf to determine how the superseded data were derived.
 JV7051
 JV7051_MARKER: DT = TOPOGRAPHIC STATION DISK
 JV7051_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7051_STAMPING: ARP 1964
 JV7051_MARK LOGO: CGS
 JV7051_PROJECTION: FLUSH
 JV7051_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7051_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7051+STABILITY: SURFACE MOTION
 JV7051_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7051+SATELLITE: SATELLITE OBSERVATIONS - February 21, 1997
 JV7051
 JV7051  HISTORY     - Date     Condition        Report By
 JV7051  HISTORY     - 1964     MONUMENTED       CGS
 JV7051  HISTORY     - 19930515 GOOD             NGS
 JV7051  HISTORY     - 19940830 GOOD             NGS
 JV7051  HISTORY     - 19970221 GOOD             NGS
 JV7051
 JV7051                          STATION DESCRIPTION
 JV7051
 JV7051'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV7051'STATION IS LOCCATED AT WASHINGTON COUNTY MUNICIPAL AIRPORT IN THE
 JV7051'CENTER OF THE AIRPORT NEAT RUNWAY 9/27 AND A TAXIWAY LEADING TO THE
 JV7051'SOUTHERN PART OF THE FEILD.  IT IS 273.5 FT (83.36 M) SOUTHWEST OF A
 JV7051'RUNWAY LIGHT, AND 75.0 FT (22.86 M) SOUTH OF THE SOUTH EDGE OF THE
 JV7051'RUNWAY.
 JV7051'A STANDARD C AND GS TOPOGRAPHIC STATION DISK, STAMPED ---ARP
 JV7051'1964---, SET IN A CONCRETE POST THAT IS FLUSH WITH THE GROUND.
 JV7051
 JV7051                          STATION RECOVERY (1993)
 JV7051
 JV7051'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1993
 JV7051'THE STATION IS LOCATED IN THE CENTER OF THE AIRPORT NEAR RUNWAY 9/27
 JV7051'AND A TAXIWAY LEADING TO THE SOUTHERN PART OF THE FIELD.  IT IS 273.5
 JV7051'FT (83.4 M) SOUTHWEST OF A RUNWAY LIGHT, 133.7 FT (40.8 M) SOUTHEAST
 JV7051'OF A RUNWAY LIGHT, AND 75.0 FT (22.9 M) SOUTH OF THE SOUTH EDGE OF THE
 JV7051'RUNWAY.  A STANDARD CGS TOPOGRAPHIC STATION DISK, STAMPED ARP 1964,
 JV7051'SET IN A CONCRETE POST THAT IS FLUSH WITH THE GROUND.
 JV7051
 JV7051                          STATION RECOVERY (1994)
 JV7051
 JV7051'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (SER)
 JV7051'THE STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTH OF HAGERSTOWN, AT
 JV7051'THE WASHINGTON COUNTY REGIONAL AIRPORT, NEAR THE GEOGRAPHICAL CENTER
 JV7051'OF THE AIRPORT NEAR RUNWAY 9/27 AND A TAXIWAY LEADING TO THE SOUTHERN
 JV7051'PART OF THE FIELD.  OWNERSHIP--COUNTY OF WASHINGTON.  WASHINGTON
 JV7051'COUNTY REGIONAL AIRPORT.  18434 SHOWALTER ROAD, HAGARSTOWN, MD
 JV7051'21742-1347.  CONTACT AIRPORT OPERATION MANAGER CAROLYN S.  MOTZ, PHONE
 JV7051'301-791-3333.  LOCATED 273.5 FT (83.4 M) SOUTHWEST OF A RUNWAY LIGHT,
 JV7051'133.7 FT (40.8 M) SOUTHEAST OF A RUNWAY LIGHT, 75.0 FT (22.9 M) SOUTH
 JV7051'OF THE SOUTH EDGE OF THE RUNWAY.
 JV7051
 JV7051                          STATION RECOVERY (1997)
 JV7051
 JV7051'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (AJL)
 JV7051'THE STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTH OF HAGERSTOWN, AT
 JV7051'THE WASHINGTON COUNTY REGIONAL AIRPORT, NEAR THE GEOGRAPHICAL CENTER
 JV7051'OF THE AIRPORT NEAR RUNWAY 9/27 AND A TAXIWAY LEADING TO THE SOUTHERN
 JV7051'PART OF THE FIELD.  OWNERSHIP--COUNTY OF WASHINGTON.  WASHINGTON
 JV7051'COUNTY REGIONAL AIRPORT.  18434 SHOWALTER ROAD, HAGARSTOWN, MD
 JV7051'21742-1347.  CONTACT AIRPORT OPERATION MANAGER CAROLYN S.  MOTZ, PHONE
 JV7051'301-791-3333.  LOCATED 273.5 FT (83.4 M) SOUTHWEST OF A RUNWAY LIGHT,
 JV7051'133.7 FT (40.8 M) SOUTHEAST OF A RUNWAY LIGHT, 75.0 FT (22.9 M) SOUTH
 JV7051'OF THE SOUTH EDGE OF THE RUNWAY.  A STANDARD C AND GS TOPOGRAPHIC
 JV7051'STATION DISK, STAMPED---ARP 1964---, SET IN A CONCRETE POST THAT IS
 JV7051'FLUSH WITH THE GROUND.  THIS STATION IS DESIGNATED AS A SECONDARY
 JV7051'AIRPORT CONTROL STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7052 ***********************************************************************
 JV7052  DESIGNATION -  HGR CTRL POINT D
 JV7052  PID         -  JV7052
 JV7052  STATE/COUNTY-  MD/WASHINGTON
 JV7052  COUNTRY     -  US
 JV7052  USGS QUAD   -  HAGERSTOWN (2016)
 JV7052
 JV7052                         *CURRENT SURVEY CONTROL
 JV7052  ______________________________________________________________________
 JV7052* NAD 83(2011) POSITION- 39 42 11.69025(N) 077 43 43.43926(W)   ADJUSTED
 JV7052* NAD 83(2011) ELLIP HT-   175.869 (meters)        (06/27/12)   ADJUSTED
 JV7052* NAD 83(2011) EPOCH   -  2010.00
 JV7052* NAVD 88 ORTHO HEIGHT -   210.1   (meters)      689.    (feet) GPS OBS
 JV7052  ______________________________________________________________________
 JV7052  NAVD 88 orthometric height was determined with an earlier geoid model
 JV7052  GEOID HEIGHT    -        -34.252 (meters)                     GEOID18
 JV7052  NAD 83(2011) X  -  1,044,414.229 (meters)                     COMP
 JV7052  NAD 83(2011) Y  - -4,801,683.960 (meters)                     COMP
 JV7052  NAD 83(2011) Z  -  4,052,802.801 (meters)                     COMP
 JV7052  LAPLACE CORR    -          2.83  (seconds)                    DEFLEC18
 JV7052
 JV7052  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7052  Standards:
 JV7052         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7052            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7052  -------------------------------------------------------------------
 JV7052  NETWORK    1.90   5.04           0.86   0.67   2.57     -0.10134834
 JV7052  -------------------------------------------------------------------
 JV7052  Click here for local accuracies and other accuracy information.
 JV7052
 JV7052.This mark is at Washington Co Regional Airport (HGR)
 JV7052
 JV7052.The horizontal coordinates were established by GPS observations
 JV7052.and adjusted by the National Geodetic Survey in June 2012.
 JV7052
 JV7052.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7052.been affixed to the stable North American tectonic plate. See 
 JV7052.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7052
 JV7052.The horizontal coordinates are valid at the epoch date displayed above
 JV7052.which is a decimal equivalence of Year/Month/Day.
 JV7052
 JV7052.The orthometric height was determined by GPS observations and a
 JV7052.high-resolution geoid model.
 JV7052
 JV7052.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7052.GEOID18 height accuracy estimate available here.
 JV7052
 JV7052.Click photographs - Photos may exist for this station.
 JV7052
 JV7052.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7052
 JV7052.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7052
 JV7052.The ellipsoidal height was determined by GPS observations
 JV7052.and is referenced to NAD 83.
 JV7052
 JV7052. The following values were computed from the NAD 83(2011) position.
 JV7052
 JV7052;                    North         East     Units Scale Factor Converg.
 JV7052;SPC MD       -   226,330.999   337,499.407   MT  1.00005412   -0 27 26.6
 JV7052;SPC MD       -   742,554.29  1,107,279.30   sFT  1.00005412   -0 27 26.6
 JV7052;SPC PA S     -    41,073.860   601,823.977   MT  1.00004394   +0 00 49.7
 JV7052;SPC PA S     -   134,756.49  1,974,484.16   sFT  1.00004394   +0 00 49.7
 JV7052;UTM  18      - 4,398,381.632   266,054.571   MT  1.00027386   -1 44 38.2
 JV7052
 JV7052!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7052!SPC MD       -   0.99997241  x   1.00005412  =   1.00002653
 JV7052!SPC PA S     -   0.99997241  x   1.00004394  =   1.00001635
 JV7052!UTM  18      -   0.99997241  x   1.00027386  =   1.00024626
 JV7052
 JV7052:                Primary Azimuth Mark                     Grid Az
 JV7052:SPC MD       -  HGR ARP                                  345 22 04.8
 JV7052:SPC PA S     -  HGR ARP                                  344 53 48.5
 JV7052:UTM  18      -  HGR ARP                                  346 39 16.4
 JV7052
 JV7052_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6605498381(NAD 83)
 JV7052
 JV7052|---------------------------------------------------------------------|
 JV7052| PID    Reference Object                     Distance      Geod. Az  |
 JV7052|                                                           dddmmss.s |
 JV7052| JV7051 HGR ARP                             499.884 METERS 3445438.2 |
 JV7052|---------------------------------------------------------------------|
 JV7052
 JV7052                          SUPERSEDED SURVEY CONTROL
 JV7052
 JV7052  NAD 83(2007)-  39 42 11.69055(N)    077 43 43.43982(W) AD(2002.00) 0
 JV7052  ELLIP H (02/10/07)  175.908  (m)                       GP(2002.00)    
 JV7052  ELLIP H (10/29/02)  175.868  (m)                       GP(       ) 4 2
 JV7052  ELLIP H (10/15/98)  175.979  (m)                       GP(       ) 4 2
 JV7052  NAD 83(1991)-  39 42 11.68996(N)    077 43 43.44044(W) AD(       ) 2
 JV7052  ELLIP H (03/03/93)  175.848  (m)                       GP(       ) 4 2
 JV7052  NGVD 29             210.36   (m)          690.2    (f) LEVELING    3  
 JV7052
 JV7052.Superseded values are not recommended for survey control.
 JV7052
 JV7052.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7052.See file dsdata.pdf to determine how the superseded data were derived.
 JV7052
 JV7052_MARKER: B = BOLT
 JV7052_SETTING: 0 = UNSPECIFIED SETTING
 JV7052_SP_SET: CONCRETE POST
 JV7052_STAMPING: CON PT D 1964
 JV7052_MARK LOGO: CGS
 JV7052_PROJECTION: FLUSH
 JV7052_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7052_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7052+STABILITY: SURFACE MOTION
 JV7052_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7052+SATELLITE: SATELLITE OBSERVATIONS - February 21, 1997
 JV7052
 JV7052  HISTORY     - Date     Condition        Report By
 JV7052  HISTORY     - 1964     MONUMENTED       CGS
 JV7052  HISTORY     - 19930515 GOOD             NGS
 JV7052  HISTORY     - 19970221 GOOD             NGS
 JV7052
 JV7052                          STATION DESCRIPTION
 JV7052
 JV7052'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JV7052'STATION IS LOCATED AT WASHINGTON COUNTY MUNICIPAL AIRPORT IN THE
 JV7052'SOUTHERN PART OF THE AIRPORT NEAR RUNWAY END 2.  IT IS ADJACENT TO AND
 JV7052'100 FT (30.48 M) SOUTHEAST OF THE CENTERLINE END OF THE RUNWAY. IT IS
 JV7052'A 18 IN COPPERWELD STAKE DRIVEN FLUSH WITH THE GROUND AND SET IN A 15
 JV7052'IN SHALLOW CONCRETE DISH AND STAMPED ---CON PT D 1964---.
 JV7052
 JV7052                          STATION RECOVERY (1993)
 JV7052
 JV7052'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1993
 JV7052'THIS STATION IS LOCATED IN THE SOUTHERN PART OF THE AIRPORT NEAR
 JV7052'RUNWAY END 2.  IT IS ADJACENT TO AND 100 FT (30.5 M) SOUTHEAST OF THE
 JV7052'CENTERLINE END OF THE RUNWAY.  AN 18 INCH COPPERWELD STAKE DRIVEN
 JV7052'FLUSH THE GROUND AND SET IN A 15 INCH SHALLOW CONCRETE DISH AND
 JV7052'STAMPED CON PT D 64.
 JV7052
 JV7052                          STATION RECOVERY (1997)
 JV7052
 JV7052'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (AJL)
 JV7052'THE STATION IS LOCATED ABOUT 5.0 MI (8.0 KM) NORTH OF HAGERSTOWN,AT
 JV7052'WASHINGTON COUNTY MUNICIPAL AIRPORT IN THE SOUTHERN PART OF THE
 JV7052'AIRPORT NEAR RUNWAY END 2.  OWNERSHIP -- COUNTY OF WASHINGTON.
 JV7052'WASHINGTON COUNTY REGIONAL AIRPORT,18434 SHOWALTER ROAD,HAGERSTOWN,MD
 JV7052'21742.  CONTACT AIRPORT OPERATIONS MANAGER,CAROLYN S.  MOTZ,PHONE
 JV7052'301-791-3333.  IT IS ADJACENT TO AND 100 FT (30.5 M) SOUTHEAST OF THE
 JV7052'CENTERLINE END OF THE RUNWAY.  IT IS A 18 IN COPPERWELD STAKE DRIVEN
 JV7052'FLUSH WITH THE GROUND AND SET IN A 15 IN SHALLOW CONCRETE DISH AND
 JV7052'STAMPED ---CON PT D 1964---.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0712 ***********************************************************************
 JV0712  DESIGNATION -  HH
 JV0712  PID         -  JV0712
 JV0712  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0712  COUNTRY     -  US
 JV0712  USGS QUAD   -  RELAY (2016)
 JV0712
 JV0712                         *CURRENT SURVEY CONTROL
 JV0712  ______________________________________________________________________
 JV0712* NAD 83(1986) POSITION- 39 11 07.     (N) 076 40 29.     (W)   SCALED
 JV0712* NAVD 88 ORTHO HEIGHT -    46.456 (meters)      152.41  (feet) ADJUSTED
 JV0712  ______________________________________________________________________
 JV0712  GEOID HEIGHT    -        -32.674 (meters)                     GEOID18
 JV0712  DYNAMIC HEIGHT  -         46.431 (meters)      152.33  (feet) COMP
 JV0712  MODELED GRAVITY -    980,095.4   (mgal)                       NAVD 88
 JV0712
 JV0712  VERT ORDER      -  FIRST     CLASS II
 JV0712
 JV0712.This mark is at Baltimore-Washington Int'l Airport (BWI)
 JV0712
 JV0712.The horizontal coordinates were scaled from a map and have
 JV0712.an estimated accuracy of +/- 6 seconds.
 JV0712
 JV0712.The orthometric height was determined by differential leveling and
 JV0712.adjusted by the NATIONAL GEODETIC SURVEY
 JV0712.in June 1991.
 JV0712
 JV0712.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0712.GEOID18 height accuracy estimate available here.
 JV0712
 JV0712.Click photographs - Photos may exist for this station.
 JV0712
 JV0712.The dynamic height is computed by dividing the NAVD 88
 JV0712.geopotential number by the normal gravity value computed on the
 JV0712.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0712.degrees latitude (g = 980.6199 gals.).
 JV0712
 JV0712.The modeled gravity was interpolated from observed gravity values.
 JV0712
 JV0712;                    North         East    Units  Estimated Accuracy
 JV0712;SPC MD       -   168,620.      428,100.      MT  (+/- 180 meters Scaled)
 JV0712
 JV0712_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ553386(NAD 83)
 JV0712
 JV0712                          SUPERSEDED SURVEY CONTROL
 JV0712
 JV0712  NGVD 29 (11/26/84)   46.699  (m)          153.21   (f) ADJUSTED    1 2
 JV0712
 JV0712.Superseded values are not recommended for survey control.
 JV0712
 JV0712.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0712.See file dsdata.pdf to determine how the superseded data were derived.
 JV0712
 JV0712_MARKER: B = BOLT
 JV0712_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV0712_SP_SET: CURB
 JV0712_STAMPING: HH
 JV0712_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0712
 JV0712  HISTORY     - Date     Condition        Report By
 JV0712  HISTORY     - UNK      MONUMENTED       CGS
 JV0712  HISTORY     - 1971     GOOD             NGS
 JV0712  HISTORY     - 1977     GOOD             NGS
 JV0712  HISTORY     - 20071107 MARK NOT FOUND   JARICE
 JV0712
 JV0712                          STATION DESCRIPTION
 JV0712
 JV0712'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0712'AT SHIPLEY.
 JV0712'AT FRIENDSHIP INTERNATIONAL AIRPORT, ABOUT 0.6 MILE SOUTHEAST
 JV0712'ALONG THE HANGAR AREA ROAD TO PIER B, AT THE ADMINISTRATION
 JV0712'BUILDING, SET IN THE TOP OF THE SOUTH END OF A CONCRETE CURB
 JV0712'THAT IS 6 INCHES WIDE AND 10 FEET LONG, ON THE NORTH SIDE OF AN
 JV0712'ELEVATOR DOOR, ON THE GROUND FLOOR (SERVICE AREA) INSIDE OF
 JV0712'PIER B OF THE ADMINISTRATION BUILDING, 3 1/2 FEET NORTH OF THE
 JV0712'CENTER LINE OF THE ELEVATOR DOOR, 0.4 FOOT EAST OF A BRICK WALL
 JV0712'AND 6 INCHES ABOVE THE FLOOR.
 JV0712
 JV0712                          STATION RECOVERY (1977)
 JV0712
 JV0712'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977
 JV0712'RECOVERED IN GOOD CONDITION.
 JV0712
 JV0712                          STATION RECOVERY (2007)
 JV0712
 JV0712'RECOVERY NOTE BY J A RICE INC 2007 (MRA)
 JV0712'THE AREA HAS BEEN COMPLETELY RECONSTRUCTED.  A THOROUGH SEARCH
 JV0712'REVEALED NO EVIDENCE OF THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0133 ***********************************************************************
 HV0133  DESIGNATION -  HH 75
 HV0133  PID         -  HV0133
 HV0133  STATE/COUNTY-  MD/QUEEN ANNES
 HV0133  COUNTRY     -  US
 HV0133  USGS QUAD   -  QUEENSTOWN (2016)
 HV0133
 HV0133                         *CURRENT SURVEY CONTROL
 HV0133  ______________________________________________________________________
 HV0133* NAD 83(1986) POSITION- 38 55 10.6    (N) 076 07 36.9    (W)   HD_HELD2
 HV0133* NAVD 88 ORTHO HEIGHT -    15.240 (meters)       50.00  (feet) ADJUSTED
 HV0133  ______________________________________________________________________
 HV0133  GEOID HEIGHT    -        -34.180 (meters)                     GEOID18
 HV0133  DYNAMIC HEIGHT  -         15.231 (meters)       49.97  (feet) COMP
 HV0133  MODELED GRAVITY -    980,059.8   (mgal)                       NAVD 88
 HV0133
 HV0133  VERT ORDER      -  SECOND    CLASS 0
 HV0133
 HV0133.The horizontal coordinates were established by autonomous hand held GPS
 HV0133.observations and have an estimated accuracy of +/- 10 meters.
 HV0133
 HV0133.The orthometric height was determined by differential leveling and
 HV0133.adjusted by the NATIONAL GEODETIC SURVEY
 HV0133.in June 1991.
 HV0133
 HV0133.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0133.GEOID18 height accuracy estimate available here.
 HV0133
 HV0133.Click photographs - Photos may exist for this station.
 HV0133
 HV0133.The dynamic height is computed by dividing the NAVD 88
 HV0133.geopotential number by the normal gravity value computed on the
 HV0133.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0133.degrees latitude (g = 980.6199 gals.).
 HV0133
 HV0133.The modeled gravity was interpolated from observed gravity values.
 HV0133
 HV0133;                    North         East    Units  Estimated Accuracy
 HV0133;SPC MD       -   139,444.      475,713.      MT  (+/- 10 meters HH2 GPS)
 HV0133
 HV0133_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0230608459(NAD 83)
 HV0133
 HV0133                          SUPERSEDED SURVEY CONTROL
 HV0133
 HV0133  NGVD 29 (11/26/84)   15.451  (m)           50.69   (f) ADJUSTED    2 0
 HV0133
 HV0133.Superseded values are not recommended for survey control.
 HV0133
 HV0133.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0133.See file dsdata.pdf to determine how the superseded data were derived.
 HV0133
 HV0133_MARKER: DB = BENCH MARK DISK
 HV0133_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0133_STAMPING: HH 75 1942
 HV0133_MARK LOGO: CGS
 HV0133_PROJECTION: PROJECTING 13 CENTIMETERS
 HV0133_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0133+STABILITY: SURFACE MOTION
 HV0133_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0133+SATELLITE: SATELLITE OBSERVATIONS - February 19, 2007
 HV0133
 HV0133  HISTORY     - Date     Condition        Report By
 HV0133  HISTORY     - 1942     MONUMENTED       CGS
 HV0133  HISTORY     - 1983     GOOD             LOCSUR
 HV0133  HISTORY     - 20030423 GOOD             USPSQD
 HV0133  HISTORY     - 20070219 GOOD             USPSQD
 HV0133
 HV0133                          STATION DESCRIPTION
 HV0133
 HV0133'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0133'3 MI NW FROM WYE MILLS.
 HV0133'THIS MARK IS ABOUT 3.0 MILES NORTHWEST ALONG HIGHWAY 404 FROM
 HV0133'WYE MILLS POST OFFICE QUEEN ANNES COUNTY, AND ABOUT 4.0 MILES
 HV0133'SOUTHWEST ALONG THE ROAD LEADING TO WYE ISLAND SET IN THE
 HV0133'YARD OF J.V. LINGLE, IN THE NORTH CORNER, 1.5 FOOT FROM THE YARD
 HV0133'FENCE, 28.0 FEET WEST OF CENTER LINE OF ROAD, 36.0 FEET NORTHEAST
 HV0133'OF A 40-INCH MAPLE TREE, 37.2 FEET SOUTHWEST OF POLE NUMBER 422,
 HV0133'5-INCHES ABOVE THE GROUND, NEAR A WHITE REFERENCE POST, AND SET
 HV0133'IN THE TOP OF A CONCRETE POST.  A STANDARD DISK.
 HV0133
 HV0133                          STATION RECOVERY (1983)
 HV0133
 HV0133'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1983
 HV0133'THIS MARK IS ABOUT 4.0 MILES SOUTHWEST ON CARMICAEL ROAD FROM ROUTE
 HV0133'50, 23 FEET WEST OF CENTERLINE OF ROAD, 1.5 FEET FROM THE YARD FENCE
 HV0133'OF THE ASPEN AND WYE INSTITUTE PROPERTY, 5 INCHES ABOVE THE GROUND
 HV0133
 HV0133                          STATION RECOVERY (2003)
 HV0133
 HV0133'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HV0133'STATION IS 1.4 FT NE OF A CARSONITE POST, 26.8 SW OF THE CENTERLINE OF
 HV0133'CARMICHAEL ROAD, 41 FT SE OF THE CENTERLINE OF A PAVED DRIVEWAY, 81 FT
 HV0133'S AND ACROSS THE ROAD FROM POLE 31982 13465, 125.2 FT E OF POWER POLE
 HV0133'31963 13460 ON INSTITUTE PROPERTY, 57.5 FT SW OF TELEPHONE PEDESTAL
 HV0133'106.  REFENCED MAPLE TREE AND FENCE DO NOT EXIST.
 HV0133
 HV0133                          STATION RECOVERY (2007)
 HV0133
 HV0133'RECOVERY NOTE BY US POWER SQUADRON 2007 (JKW)
 HV0133'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5211 ***********************************************************************
 JV5211  DESIGNATION -  HIC
 JV5211  PID         -  JV5211
 JV5211  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5211  COUNTRY     -  US
 JV5211  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5211
 JV5211                         *CURRENT SURVEY CONTROL
 JV5211  ______________________________________________________________________
 JV5211* NAD 83(1991) POSITION- 39 05 22.25565(N) 076 27 25.82351(W)   ADJUSTED
 JV5211* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV5211  ______________________________________________________________________
 JV5211  GEOID HEIGHT    -        -33.226 (meters)                     GEOID18
 JV5211  LAPLACE CORR    -         -2.45  (seconds)                    DEFLEC18
 JV5211  HORZ ORDER      -  SECOND
 JV5211
 JV5211.The horizontal coordinates were established by classical geodetic methods
 JV5211.and adjusted by the National Geodetic Survey in January 1992.
 JV5211
 JV5211.The orthometric height was scaled from a topographic map.
 JV5211
 JV5211.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5211.GEOID18 height accuracy estimate available here.
 JV5211
 JV5211.Click photographs - Photos may exist for this station.
 JV5211
 JV5211.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5211
 JV5211. The following values were computed from the NAD 83(1991) position.
 JV5211
 JV5211;                    North         East     Units Scale Factor Converg.
 JV5211;SPC MD       -   158,083.055   446,961.519   MT  0.99995678   +0 20 26.5
 JV5211;SPC MD       -   518,644.16  1,466,406.25   sFT  0.99995678   +0 20 26.5
 JV5211;UTM  18      - 4,327,720.860   373,977.147   MT  0.99979556   -0 55 08.1
 JV5211
 JV5211!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5211!SPC MD       -   1.00000494  x   0.99995678  =   0.99996172
 JV5211!UTM  18      -   1.00000494  x   0.99979556  =   0.99980050
 JV5211
 JV5211:                Primary Azimuth Mark                     Grid Az
 JV5211:SPC MD       -  MOUNTAIN PT MAGOTHY RIVER BCN            151 31 20.0
 JV5211:UTM  18      -  MOUNTAIN PT MAGOTHY RIVER BCN            152 46 54.6
 JV5211
 JV5211_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7397727720(NAD 83)
 JV5211
 JV5211|---------------------------------------------------------------------|
 JV5211| PID    Reference Object                     Distance      Geod. Az  |
 JV5211|                                                           dddmmss.s |
 JV5211| JV5226 PAVILION                            APPROX. 3.9 KM 1462910.3 |
 JV5211| JV5244 MOUNTAIN PT MAGOTHY RIVER BCN       APPROX. 4.3 KM 1515146.5 |
 JV5211| CA9517 HIC RM                               22.950 METERS 25447     |
 JV5211|---------------------------------------------------------------------|
 JV5211
 JV5211                          SUPERSEDED SURVEY CONTROL
 JV5211
 JV5211  NAD 83(1986)-  39 05 22.25141(N)    076 27 25.83409(W) AD(       ) 2
 JV5211  NAD 27      -  39 05 21.85400(N)    076 27 26.97400(W) AD(       ) 2
 JV5211
 JV5211.Superseded values are not recommended for survey control.
 JV5211
 JV5211.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5211.See file dsdata.pdf to determine how the superseded data were derived.
 JV5211
 JV5211_MARKER: DS = TRIANGULATION STATION DISK
 JV5211_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5211_STAMPING: HIC 1933
 JV5211_MARK LOGO: CGS
 JV5211_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5211+STABILITY: SURFACE MOTION
 JV5211
 JV5211  HISTORY     - Date     Condition        Report By
 JV5211  HISTORY     - 1933     MONUMENTED       CGS
 JV5211  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5211
 JV5211                          STATION DESCRIPTION
 JV5211
 JV5211'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5211'ON THE N SHORE MAGOTHY RIVER ON HICKORY POINT.  STATION IS IN SIDE
 JV5211'YARD OF DAVID BAKER.  155 FEET TO E OF HOUSE.  45 FEET FROM HIGH
 JV5211'BANK TO S.  AND 134 FEET FROM 30-INCH RED OAK TREE ON EXTREME END
 JV5211'OF POINT.
 JV5211'
 JV5211'STATION AND REFERENCE MARK NO.1 ARE STANDARD BRONZE DISKS SET IN
 JV5211'CONCRETE AS DESCRIBED IN NOTES 1A AND 11A.
 JV5211'
 JV5211'STATION, REFERENCE MARK NO.1, AND E PEAK OF HOUSE ARE IN RANGE.
 JV5211'STATION AND REFERENCE MARKS ARE SET FLUSH WITH THE SURFACE OF THE
 JV5211'GROUND.  STATION IS ON THE NE CORNER OF THE NECK BETWEEN TAR COVE
 JV5211'GRAYS CREEK, ON THE N SHORE OF SILLERY BAY.
 JV5211'
 JV5211'DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 JV5211'FOLLOWS--SE TANGENT DOBBINS ISLAND, 3/4 MILE, N 12 DEG E.
 JV5211'SW TANGENT GIBSON ISLAND, 1-1/4 MILES, N 28 DEG W.  SE END
 JV5211'LONG POINT, ONE MILE, S 84 DEG W.
 JV5211
 JV5211                          STATION RECOVERY (1961)
 JV5211
 JV5211'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5211'STATION AND R.M. COULD NOT BE FOUND.  THE POINT OF LAND HAD BEEN
 JV5211'WASHED AWAY AND THEN REFILLED.  IT IS BELIEVED A DRIVEWAY NOW SITS
 JV5211'OVER THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0627 ***********************************************************************
 HV0627  DESIGNATION -  HICKEY
 HV0627  PID         -  HV0627
 HV0627  STATE/COUNTY-  MD/CHARLES
 HV0627  COUNTRY     -  US
 HV0627  USGS QUAD   -  POPES CREEK (2016)
 HV0627
 HV0627                         *CURRENT SURVEY CONTROL
 HV0627  ______________________________________________________________________
 HV0627* NAD 83(1993) POSITION- 38 23 38.61442(N) 076 58 04.81936(W)   ADJUSTED
 HV0627* NAVD 88 ORTHO HEIGHT -    42.731 (meters)      140.19  (feet) ADJUSTED
 HV0627  ______________________________________________________________________
 HV0627  GEOID HEIGHT    -        -33.390 (meters)                     GEOID18
 HV0627  LAPLACE CORR    -         -4.04  (seconds)                    DEFLEC18
 HV0627  DYNAMIC HEIGHT  -         42.704 (meters)      140.10  (feet) COMP
 HV0627  MODELED GRAVITY -    980,007.2   (mgal)                       NAVD 88
 HV0627
 HV0627  HORZ ORDER      -  FIRST
 HV0627  VERT ORDER      -  SECOND    CLASS 0
 HV0627
 HV0627.The horizontal coordinates were established by classical geodetic methods
 HV0627.and adjusted by the National Geodetic Survey in November 1994.
 HV0627
 HV0627.The orthometric height was determined by differential leveling and
 HV0627.adjusted by the NATIONAL GEODETIC SURVEY
 HV0627.in June 1991.
 HV0627
 HV0627.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0627.GEOID18 height accuracy estimate available here.
 HV0627
 HV0627.Click photographs - Photos may exist for this station.
 HV0627
 HV0627.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0627
 HV0627.The dynamic height is computed by dividing the NAVD 88
 HV0627.geopotential number by the normal gravity value computed on the
 HV0627.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0627.degrees latitude (g = 980.6199 gals.).
 HV0627
 HV0627.The modeled gravity was interpolated from observed gravity values.
 HV0627
 HV0627. The following values were computed from the NAD 83(1993) position.
 HV0627
 HV0627;                    North         East     Units Scale Factor Converg.
 HV0627;SPC MD       -    80,744.162   402,795.021   MT  0.99998497   +0 01 12.3
 HV0627;SPC MD       -   264,908.14  1,321,503.33   sFT  0.99998497   +0 01 12.3
 HV0627;UTM  18      - 4,251,371.775   328,135.252   MT  0.99996377   -1 13 21.2
 HV0627
 HV0627!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0627!SPC MD       -   0.99999853  x   0.99998497  =   0.99998350
 HV0627!UTM  18      -   0.99999853  x   0.99996377  =   0.99996230
 HV0627
 HV0627:                Primary Azimuth Mark                     Grid Az
 HV0627:SPC MD       -  HICKEY RM 2 AZIMUTH                      170 40 45.6
 HV0627:UTM  18      -  HICKEY RM 2 AZIMUTH                      171 55 19.1
 HV0627
 HV0627_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2813551371(NAD 83)
 HV0627
 HV0627|---------------------------------------------------------------------|
 HV0627| PID    Reference Object                     Distance      Geod. Az  |
 HV0627|                                                           dddmmss.s |
 HV0627| HV0628 HICKEY RM 1                          26.990 METERS 02300     |
 HV0627| CX2864 HICKEY RM 2 AZIMUTH                                1704157.9 |
 HV0627| HV0629 HICKEY RM 3                          26.080 METERS 27322     |
 HV0627|---------------------------------------------------------------------|
 HV0627
 HV0627                          SUPERSEDED SURVEY CONTROL
 HV0627
 HV0627  NAD 83(1991)-  38 23 38.61461(N)    076 58 04.82342(W) AD(       ) 1
 HV0627  NAD 83(1986)-  38 23 38.61450(N)    076 58 04.83441(W) AD(       ) 1
 HV0627  NAD 27      -  38 23 38.16000(N)    076 58 05.92700(W) AD(       ) 1
 HV0627  NGVD 29              43.01   (m)          141.1    (f) LEVELING    3  
 HV0627  NGVD 29 (11/26/84)   43.014  (m)          141.12   (f) ADJUSTED    2 0
 HV0627
 HV0627.Superseded values are not recommended for survey control.
 HV0627
 HV0627.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0627.See file dsdata.pdf to determine how the superseded data were derived.
 HV0627
 HV0627_MARKER: DS = TRIANGULATION STATION DISK
 HV0627_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0627_STAMPING: HICKEY 1934
 HV0627_MARK LOGO: CGS
 HV0627_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0627+STABILITY: SURFACE MOTION
 HV0627
 HV0627  HISTORY     - Date     Condition        Report By
 HV0627  HISTORY     - 1934     MONUMENTED       CGS
 HV0627  HISTORY     - 1942     GOOD             CGS
 HV0627  HISTORY     - 1942     GOOD             CGS
 HV0627  HISTORY     - 1953     GOOD             USGS
 HV0627  HISTORY     - 1956     GOOD             CGS
 HV0627  HISTORY     - 1958     GOOD             CGS
 HV0627  HISTORY     - 1973     GOOD             NGS
 HV0627
 HV0627                          STATION DESCRIPTION
 HV0627
 HV0627'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV0627'STATION IS ABOUT 11 MILES BY ROAD SE OF LA PLATA AND 6.1 MILES BY
 HV0627'ROAD N OF MORGANTOWN, ON PROPERTY OWNED BY MRS. MARGARET HICKEY.
 HV0627'IT IS IN THE NE PART OF A CLEARING ON TOP OF THE KNOLL ON THE N
 HV0627'SIDE OF THE GRAVEL ROAD.  MARK PROJECTS ABOUT 4 INCHES ABOVE THE
 HV0627'GROUND AT A POINT ABOUT 290 FEET N OF THE GRAVEL ROAD, 145 FEET E
 HV0627'OF THE FARM ROAD, 157 FEET E OF THE E SIDE OF THE BARN, 3 FEET N
 HV0627'OF RANGE WITH THE N SIDE OF THE BARN, 75 FEET S OF THE EDGE OF A
 HV0627'THICK WOODS AND 50 FEET W OF THE EDGE OF A THICK GROWTH OF SMALL
 HV0627'PINE TREES.
 HV0627'
 HV0627'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD DISKS SET IN
 HV0627'CONCRETE, AS DESCRIBED.
 HV0627'
 HV0627'REFERENCE MARK NO. 1 IS IN THE EDGE OF THE WOODS WHERE A ROAD
 HV0627'ENTERS THE WOODS, AND ON THE N SIDE OF THIS ROAD.
 HV0627'
 HV0627'REFERENCE MARK NO. 2 (AZIMUTH MARK) IS 10 YARDS NE OF THE SW
 HV0627'CORNER OF A FARMHOUSE, 6 YARDS E OF THE NE CORNER OF A SMOKE HOUSE
 HV0627'4 YARDS W OF A LARGE MAPLE TREE, AND PROJECTS ABOUT 6 INCHES.  IT
 HV0627'IS VISIBLE FROM THE GROUND AT THE STATION.
 HV0627'
 HV0627'REFERENCE MARK NO. 3 IS 60 FEET E OF THE FARM ROAD, IN THE EDGE OF
 HV0627'THE WOODS AND 18 FEET N OF RANGE WITH THE N SIDE OF THE BARN.
 HV0627'
 HV0627'TO REACH FROM LA PLATA FOLLOW STATE ROUTE 3, PAVED, 10.4 MILES TO
 HV0627'A GRAVEL T-ROAD W.  TURN W ON THIS GRAVEL ROAD (POPES CREEK ROAD)
 HV0627'AND FOLLOW IT 0.5 MILE TO A FARM ROAD LEADING N PAST AN OLD BARN
 HV0627'TO A FARMHOUSE.
 HV0627'
 HV0627'A 103-FOOT TOWER CLEARED ALL LINES.
 HV0627'
 HV0627'NO OTHER OBJECTS SUITABLE FOR AZIMUTHS VISIBLE FROM THE GROUND.
 HV0627
 HV0627                          STATION RECOVERY (1942)
 HV0627
 HV0627'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV0627'STATION AND ALL MARKS RECOVERED AS DESCRIBED AND IN GOOD
 HV0627'CONDITION.  FOLLOWING IS A COMPLETE NEW DESCRIPTION.
 HV0627'
 HV0627'STATION IS ABOUT 11 MILES BY ROAD SE OF LA PLATA, ON LAND OWNED BY
 HV0627'MRS. MARGARET HICKEY.  IT IS AT THE NE EDGE OF A CLEARING ON A
 HV0627'SMALL KNOLL, ABOUT 300 FEET N OF A GRAVEL ROAD, 4 FEET N OF THE
 HV0627'PROJECTED PLANE OF THE N WALL OF A BARN WHICH IS ON THE FARM
 HV0627'ROAD, 80 FEET SW OF THE NE CORNER OF THE CLEARED AREA, AND 145
 HV0627'FEET E OF THE FARM ROAD.  IT PROJECTS ABOUT 6 INCHES AND IS
 HV0627'STAMPED HICKEY 1934.
 HV0627'
 HV0627'REFERENCE MARK NO. 1 IS IN THE EDGE OF THE WOODS WHERE A ROAD
 HV0627'ENTERS THE WOODS.  IT IS STAMPED HICKEY NO. 1 1934 AND PROJECTS
 HV0627'ABOUT 4 INCHES.
 HV0627'
 HV0627'REFERENCE MARK NO. 3 IS IN THE EDGE OF THE WOODS AND 18 FEET N OF
 HV0627'THE PROJECTED PLANE OF THE N WALL OF THE BARN.  IT PROJECTS ABOUT
 HV0627'4 INCHES AND IS STAMPED HICKEY NO. 3 1934.
 HV0627'
 HV0627'REFERENCE MARK NO. 2 (USED AS THE AZIMUTH MARK) IS 30 FEET NE OF
 HV0627'THE SW CORNER OF A YELLOW FARMHOUSE.  IT PROJECTS ABOUT 6 INCHES
 HV0627'AND IS STAMPED HICKEY NO. 2 1934.  TO REACH FROM THE JUNCTION OF
 HV0627'THE GRAVEL ROAD AND STATE HIGHWAY 3, GO S ON PAVED HIGHWAY FOR
 HV0627'0.25 MILE TO A FARM ROAD RIGHT.  TURN RIGHT AND FOLLOW FARM ROAD
 HV0627'FOR ABOUT 0.4 MILE TO THE FARMHOUSE AND THE AZIMUTH MARK.
 HV0627'
 HV0627'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV0627'STATE HIGHWAY 3, ABOUT 2 MILES NE OF THE NEW POTOMAC RIVER
 HV0627'BRIDGE, GO N ON STATE HIGHWAY 3 FOR 1.0 MILE TO A GRAVEL ROAD
 HV0627'LEFT.  TURN LEFT ON THE GRAVEL ROAD AND GO 0.55 MILE TO A FARM
 HV0627'ROAD RIGHT.  TURN RIGHT ON THE FARM ROAD AND GO ABOUT 300 FEET TO
 HV0627'THE SUMMIT OF THE KNOLL AND THE STATION ON THE RIGHT.
 HV0627'
 HV0627'A 64-FOOT TOWER WILL SEE 113-FOOT LIGHTS AT RYCEVILLE AND VICTORIA.
 HV0627'
 HV0627'A 64-FOOT TOWER WILL SEE 100-FOOT LIGHTS AT HILLTOP, PLOWDEN, AND
 HV0627'PORT.
 HV0627
 HV0627                          STATION RECOVERY (1942)
 HV0627
 HV0627'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0627'1.5 MI E FROM POPES CREEK.
 HV0627'THIS MARK IS ABOUT 1.5 MILES EAST FROM THE RAILROAD STATION AT
 HV0627'POPES CREEK, CHARLES COUNTY, ALONG A DIRT ROAD TO JUNCTION WITH
 HV0627'HIGHWAY NUMBER 3, ABOUT 500 FEET NORTHEAST OF A T ROAD JUNCTION TO
 HV0627'THE NORTH, 280 FEET EAST OF AN OLD UNPAINTED BARN, IN THE NORTH
 HV0627'AND CENTRAL PART OF A CULTIVATED FIELD THAT IS SURROUNDED ON THE
 HV0627'NORTH AND EAST BY A PINE TREE GROVE, AT THE TOP OF THE KNOLL, ABOUT
 HV0627'3 FEET SOUTH OF A STANDARD REFERENCE POST, AND IS A STANDARD
 HV0627'TRIANGULATION STATION DISK SET IN THE TOP OF A CONCRETE POST.
 HV0627
 HV0627                          STATION RECOVERY (1953)
 HV0627
 HV0627'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 HV0627'GOOD AS DESCRIBED, BUT STATION IS NOW OVERGROWN WITH PINE TREES.
 HV0627
 HV0627                          STATION RECOVERY (1956)
 HV0627
 HV0627'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (MLC)
 HV0627'THE STATION WAS RECOVERED AS DESCRIBED IN 1942, AND ALL MARKS WERE
 HV0627'FOUND IN GOOD CONDITION.  THE DISTANCE TO THE REFERENCE MARKS
 HV0627'CHECKED WITH THE 1942 DISTANCE.  DUE TO A CHANGE IN LANDMARKS AND
 HV0627'ROADS, A NEW TO REACH FOLLOWS--
 HV0627'
 HV0627'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY 103 AND STATE ROUTE 6
 HV0627'AT THE W EDGE OF LA PLATA, GO S ON U.S. HIGHWAY 301 FOR 9.1 MI. TO
 HV0627'A SIDE ROAD RIGHT.  TURN RIGHT AND GO W ON A GRAVEL ROAD FOR 1.0
 HV0627'MI. (CONTINUE STRAIGHT AHEAD ON THE GRAVEL ROAD FOR 0.2 MI. TO A
 HV0627'SIDE ROAD RIGHT.  TURN RIGHT AND GO NW ON A DRIVEWAY TO A
 HV0627'FARMHOUSE FOR 0.3 MI. TO THE FARMHOUSE AND AZIMUTH MARK IN THE
 HV0627'FENCE LINE, AND 27 FT. N-NE OF THE SW CORNER OF THE HOUSE.) TURN
 HV0627'RIGHT AND GO N ON A GRAVEL ROAD FOR 0.55 MI. TO A SIDE ROAD RIGHT.
 HV0627'TURN RIGHT AND GO E FOR 0.05 MI. TO THE SUMMIT OF A RIDGE AND A
 HV0627'SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO ABOUT 100 YD. ON A
 HV0627'WOODS ROAD TO STATION ON RIGHT.
 HV0627
 HV0627                          STATION RECOVERY (1958)
 HV0627
 HV0627'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV0627'THE STATION AND ALL MARKS WERE RECOVERED AS DESCRIBED IN THE 1942
 HV0627'DESCRIPTION.  A NEW TO REACH FOLLOWS--
 HV0627'
 HV0627'FROM LA PLATA, GO S ON U.S. HIGHWAY 301 TO THE JUNCTION OF
 HV0627'MARYLAND HIGHWAY 3.  TURN RIGHT AT THE JUNCTION ON A PAVED ROAD
 HV0627'AND GO N FOR 1.0 MI. TO THE FIRST GRAVEL ROAD W.  (FROM THIS
 HV0627'INTERSECTION, THE AZIMUTH MARK CAN BE REACHED BY GOING S TOWARD
 HV0627'U.S. HIGHWAY 301 FOR 0.2 MI. TO A GRAVEL DRIVE (W).  TURN RIGHT
 HV0627'AND GO W TO A YELLOW FARMHOUSE.  (THE AZIMUTH MARK LIES NEAR THE
 HV0627'NW CORNER OF THE HOUSE IN THE FENCE-LINE.) TURN LEFT AND GO W FOR
 HV0627'0.55 MI. TO THE FIRST SIDE ROAD (N).  TURN RIGHT AND GO N FOR 0.5
 HV0627'MI. TOWARD A BARN AND A WOODS ROAD (E).  TURN RIGHT AND GO E FOR
 HV0627'50 YD. TO THE STATION ON THE RIGHT.
 HV0627
 HV0627                          STATION RECOVERY (1973)
 HV0627
 HV0627'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (LFS)
 HV0627'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HV0627'CONDITION AS DESCRIBED 1942 DESCRIPTION.  THERE WAS A REPORT THAT
 HV0627'REFERENCE MARK 1 WAS NOT FOUND.  HOWEVER AFTER A LONG SEARCH IT
 HV0627'WAS FOUND UNDER A PILE OF DISREQUARDED CANS AND BOTTLES.  IT WAS
 HV0627'NEAR DARK WHEN THE MARKS WAS FINALLY FOUND AND DAYLIGHT WOULD NOT
 HV0627'PERMIT THE MARKS TO BE INTERSECTED.
 HV0627'
 HV0627'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--6 MILES NORTH OF
 HV0627'MORGANTOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0628 ***********************************************************************
 HV0628  DESIGNATION -  HICKEY RM 1
 HV0628  PID         -  HV0628
 HV0628  STATE/COUNTY-  MD/CHARLES
 HV0628  COUNTRY     -  US
 HV0628  USGS QUAD   -  POPES CREEK (2016)
 HV0628
 HV0628                         *CURRENT SURVEY CONTROL
 HV0628  ______________________________________________________________________
 HV0628* NAD 83(1986) POSITION- 38 23 39.42   (N) 076 58 04.38   (W)   HD_HELD1
 HV0628* NAVD 88 ORTHO HEIGHT -    42.642 (meters)      139.90  (feet) ADJUSTED
 HV0628  ______________________________________________________________________
 HV0628  GEOID HEIGHT    -        -33.390 (meters)                     GEOID18
 HV0628  DYNAMIC HEIGHT  -         42.615 (meters)      139.81  (feet) COMP
 HV0628  MODELED GRAVITY -    980,007.2   (mgal)                       NAVD 88
 HV0628
 HV0628  VERT ORDER      -  SECOND    CLASS 0
 HV0628
 HV0628.The horizontal coordinates were determined by differentially corrected
 HV0628.hand held GPS observations or other comparable positioning techniques
 HV0628.and have an estimated accuracy of +/- 3 meters.
 HV0628
 HV0628.The orthometric height was determined by differential leveling and
 HV0628.adjusted by the NATIONAL GEODETIC SURVEY
 HV0628.in June 1991.
 HV0628
 HV0628.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0628.GEOID18 height accuracy estimate available here.
 HV0628
 HV0628.Click photographs - Photos may exist for this station.
 HV0628
 HV0628.The dynamic height is computed by dividing the NAVD 88
 HV0628.geopotential number by the normal gravity value computed on the
 HV0628.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0628.degrees latitude (g = 980.6199 gals.).
 HV0628
 HV0628.The modeled gravity was interpolated from observed gravity values.
 HV0628
 HV0628;                    North         East    Units  Estimated Accuracy
 HV0628;SPC MD       -    80,769.0     402,805.7     MT  (+/- 3 meters HH1 GPS) 
 HV0628
 HV0628_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2814651396(NAD 83)
 HV0628
 HV0628                          SUPERSEDED SURVEY CONTROL
 HV0628
 HV0628  NGVD 29 (11/26/84)   42.925  (m)          140.83   (f) ADJUSTED    2 0
 HV0628
 HV0628.Superseded values are not recommended for survey control.
 HV0628
 HV0628.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0628.See file dsdata.pdf to determine how the superseded data were derived.
 HV0628
 HV0628_MARKER: DR = REFERENCE MARK DISK
 HV0628_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0628_STAMPING: HICKEY NO 1 1934
 HV0628_MARK LOGO: CGS
 HV0628_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0628+STABILITY: SURFACE MOTION
 HV0628
 HV0628  HISTORY     - Date     Condition        Report By
 HV0628  HISTORY     - 1934     MONUMENTED       CGS
 HV0628  HISTORY     - 1942     GOOD             CGS
 HV0628
 HV0628                          STATION DESCRIPTION
 HV0628
 HV0628'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0628'1.5 MI E FROM POPES CREEK.
 HV0628'THIS MARK IS ABOUT 1.5 MILES EAST OF THE RAILROAD STATION AT
 HV0628'POPES CREEK, CHARLES COUNTY, ALONG A DIRT ROAD TO THE JUNCTION
 HV0628'WITH HIGHWAY NUMBER 3, ABOUT 104 FEET NORTHEAST OF THE STATION,
 HV0628'ABOUT 8 FEET NORTH OF A DIM DIRT ROAD LEADING EAST FROM THE FARM
 HV0628'ROAD INTO THE WOODS, ABOUT 200 FEET EAST OF THE FARM ROAD LEADING
 HV0628'NORTH TO A FARM HOUSE FROM THE MAIN ROAD, A STANDARD REFERENCE
 HV0628'DISK SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0629 ***********************************************************************
 HV0629  DESIGNATION -  HICKEY RM 3
 HV0629  PID         -  HV0629
 HV0629  STATE/COUNTY-  MD/CHARLES
 HV0629  COUNTRY     -  US
 HV0629  USGS QUAD   -  POPES CREEK (2016)
 HV0629
 HV0629                         *CURRENT SURVEY CONTROL
 HV0629  ______________________________________________________________________
 HV0629* NAD 83(1986) POSITION- 38 23 38.66   (N) 076 58 05.89   (W)   HD_HELD1
 HV0629* NAVD 88 ORTHO HEIGHT -    41.580 (meters)      136.42  (feet) ADJUSTED
 HV0629  ______________________________________________________________________
 HV0629  GEOID HEIGHT    -        -33.390 (meters)                     GEOID18
 HV0629  DYNAMIC HEIGHT  -         41.554 (meters)      136.33  (feet) COMP
 HV0629  MODELED GRAVITY -    980,007.2   (mgal)                       NAVD 88
 HV0629
 HV0629  VERT ORDER      -  SECOND    CLASS 0
 HV0629
 HV0629.The horizontal coordinates were determined by differentially corrected
 HV0629.hand held GPS observations or other comparable positioning techniques
 HV0629.and have an estimated accuracy of +/- 3 meters.
 HV0629
 HV0629.The orthometric height was determined by differential leveling and
 HV0629.adjusted by the NATIONAL GEODETIC SURVEY
 HV0629.in June 1991.
 HV0629
 HV0629.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0629.GEOID18 height accuracy estimate available here.
 HV0629
 HV0629.Click photographs - Photos may exist for this station.
 HV0629
 HV0629.The dynamic height is computed by dividing the NAVD 88
 HV0629.geopotential number by the normal gravity value computed on the
 HV0629.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0629.degrees latitude (g = 980.6199 gals.).
 HV0629
 HV0629.The modeled gravity was interpolated from observed gravity values.
 HV0629
 HV0629;                    North         East    Units  Estimated Accuracy
 HV0629;SPC MD       -    80,745.6     402,769.0     MT  (+/- 3 meters HH1 GPS) 
 HV0629
 HV0629_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2810951373(NAD 83)
 HV0629
 HV0629                          SUPERSEDED SURVEY CONTROL
 HV0629
 HV0629  NGVD 29 (11/26/84)   41.863  (m)          137.35   (f) ADJUSTED    2 0
 HV0629
 HV0629.Superseded values are not recommended for survey control.
 HV0629
 HV0629.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0629.See file dsdata.pdf to determine how the superseded data were derived.
 HV0629
 HV0629_MARKER: DR = REFERENCE MARK DISK
 HV0629_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0629_STAMPING: HICKEY RM 3 1934
 HV0629_MARK LOGO: CGS
 HV0629_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0629+STABILITY: SURFACE MOTION
 HV0629
 HV0629  HISTORY     - Date     Condition        Report By
 HV0629  HISTORY     - 1934     MONUMENTED       CGS
 HV0629  HISTORY     - 1942     GOOD             CGS
 HV0629
 HV0629                          STATION DESCRIPTION
 HV0629
 HV0629'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV0629'1.5 MI E FROM POPES CREEK.
 HV0629'A STANDARD REFERENCE MARK DISK SET IN A CONCRETE MONUMENT, STAMPED
 HV0629'HICKEY 3, 1934 - 85 FEET WEST OF STATION, 1 FOOT SOUTHEAST OF
 HV0629'MARKER POST, 5 FEET WEST OF WEST TRACK, IN A PRIVATE DRIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5220 ***********************************************************************
 JV5220  DESIGNATION -  HICKORY 2
 JV5220  PID         -  JV5220
 JV5220  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5220  COUNTRY     -  US
 JV5220  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5220
 JV5220                         *CURRENT SURVEY CONTROL
 JV5220  ______________________________________________________________________
 JV5220* NAD 83(1991) POSITION- 39 05 21.68411(N) 076 27 24.38869(W)   ADJUSTED
 JV5220* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV5220  ______________________________________________________________________
 JV5220  GEOID HEIGHT    -        -33.227 (meters)                     GEOID18
 JV5220  LAPLACE CORR    -         -2.45  (seconds)                    DEFLEC18
 JV5220  HORZ ORDER      -  THIRD
 JV5220
 JV5220.The horizontal coordinates were established by classical geodetic methods
 JV5220.and adjusted by the National Geodetic Survey in January 1992.
 JV5220
 JV5220.The orthometric height was scaled from a topographic map.
 JV5220
 JV5220.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5220.GEOID18 height accuracy estimate available here.
 JV5220
 JV5220.Click photographs - Photos may exist for this station.
 JV5220
 JV5220.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5220
 JV5220. The following values were computed from the NAD 83(1991) position.
 JV5220
 JV5220;                    North         East     Units Scale Factor Converg.
 JV5220;SPC MD       -   158,065.636   446,996.105   MT  0.99995677   +0 20 27.4
 JV5220;SPC MD       -   518,587.01  1,466,519.72   sFT  0.99995677   +0 20 27.4
 JV5220;UTM  18      - 4,327,702.688   374,011.335   MT  0.99979545   -0 55 07.2
 JV5220
 JV5220!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5220!SPC MD       -   1.00000494  x   0.99995677  =   0.99996171
 JV5220!UTM  18      -   1.00000494  x   0.99979545  =   0.99980039
 JV5220
 JV5220:                Primary Azimuth Mark                     Grid Az
 JV5220:SPC MD       -  BAY                                      051 01 09.8
 JV5220:UTM  18      -  BAY                                      052 16 44.4
 JV5220
 JV5220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7401127702(NAD 83)
 JV5220
 JV5220|---------------------------------------------------------------------|
 JV5220| PID    Reference Object                     Distance      Geod. Az  |
 JV5220|                                                           dddmmss.s |
 JV5220| JV5204 BAY                                 APPROX. 1.1 KM 0512137.2 |
 JV5220| CA9518 HICKORY 2 RM                          2.380 METERS 31915     |
 JV5220|---------------------------------------------------------------------|
 JV5220
 JV5220                          SUPERSEDED SURVEY CONTROL
 JV5220
 JV5220  NAD 83(1986)-  39 05 21.67994(N)    076 27 24.39921(W) AD(       ) 3
 JV5220  NAD 27      -  39 05 21.22700(N)    076 27 25.59900(W) AD(       ) 3
 JV5220  USSD        -  39 05 21.63100(N)    076 27 25.37800(W) AD(       ) 3
 JV5220
 JV5220.Superseded values are not recommended for survey control.
 JV5220
 JV5220.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5220.See file dsdata.pdf to determine how the superseded data were derived.
 JV5220
 JV5220
 JV5220  HISTORY     - Date     Condition        Report By
 JV5220  HISTORY     - 1898     MONUMENTED       CGS
 JV5220  HISTORY     - 1906     GOOD             CGS
 JV5220  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5220
 JV5220                          STATION DESCRIPTION
 JV5220
 JV5220'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5220'ON THE NW SHORE OF SILLERY BAY (MAGOTHY RIVER), ON HICKORY BAR
 JV5220'POINT, AT W SIDE OF TAR COVE.  STATION IS 1 FOOT ABOVE AND 30 FEET
 JV5220'BACK FROM HIGH-WATER MARK AND A SHORT DISTANCE FROM EXTREME END OF
 JV5220'POINT.  STATION MARKED BY NAIL IN STUB SET IN A BOX 4 INCHES
 JV5220'SQUARE AND 3.5 FEET DEEP AND PROJECTING 6 INCHES ABOVE THE GROUND.
 JV5220'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5220'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5220'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.
 JV5220'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 JV5220'IT IS 2.38 METERS (7.81 FEET) FROM STATION IN BEARING N 40 DEG 45
 JV5220'MIN W.  DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 JV5220'REFERENCE ARE AS FOLLOWS--RIGHT TANGENT OF DOBBINS ISLAND, 3/4
 JV5220'MILE, S 28 DEG 0 MIN W.  NAIL IN BLAZE IN OLD TREE, 7.36 METERS
 JV5220'(24.15 FEET), N 36 DEG 31 MIN W.  LEFT TANGENT TO POINT AT
 JV5220'ENTRANCE TO COVE, 1 MILE, N 82 DEG 20 MIN E.  LONE TREE NEAR
 JV5220'STATION PURSE, 3 MILES, S 19 DEG 36 MIN E.  IN 1898 AN OAK TREE
 JV5220'WAS MARKED WITH A TRIANGLE AND NAIL.  IT WAS 36.75 FEET W FROM THE
 JV5220'STATION.
 JV5220
 JV5220                          STATION RECOVERY (1933)
 JV5220
 JV5220'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5220'STATION WAS SET 1 FOOT ABOVE AND 30 FEET BACK OF HIGH-WATER MARK,
 JV5220'A SHORT DISTANCE FROM THE EXTREME END OF THE POINT.  THE SHORELINE
 JV5220'HAS SHIFTED SO THAT THIS POINT NOW FALLS OUT IN THE WATER AT HIGH
 JV5220'TIDE.  THE M.S.F.S. MONUMENT WAS FOUND, BUT EVIDENTLY HAD BEEN
 JV5220'DISTURBED DURING THE STORM OF AUGUST, 1933.  THE STATION, A NAIL
 JV5220'IN A WOOD STUB, COULD NOT BE FOUND.  IT HAS PROBABLY BEEN WASHED AWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6772 ***********************************************************************
 JV6772  DESIGNATION -  HICKORY RADIO TOWER
 JV6772  PID         -  JV6772
 JV6772  STATE/COUNTY-  MD/HARFORD
 JV6772  COUNTRY     -  US
 JV6772  USGS QUAD   -  BEL AIR (2016)
 JV6772
 JV6772                         *CURRENT SURVEY CONTROL
 JV6772  ______________________________________________________________________
 JV6772* NAD 83(1991) POSITION- 39 34 49.63015(N) 076 20 50.44296(W)   ADJUSTED
 JV6772* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV6772  ______________________________________________________________________
 JV6772  GEOID HEIGHT    -        -32.707 (meters)                     GEOID18
 JV6772  LAPLACE CORR    -         -2.53  (seconds)                    DEFLEC18
 JV6772  HORZ ORDER      -  THIRD
 JV6772
 JV6772.The horizontal coordinates were established by classical geodetic methods
 JV6772.and adjusted by the National Geodetic Survey in January 1992.
 JV6772
 JV6772.The orthometric height was scaled from a topographic map.
 JV6772
 JV6772.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6772.GEOID18 height accuracy estimate available here.
 JV6772
 JV6772.Click photographs - Photos may exist for this station.
 JV6772
 JV6772.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6772
 JV6772. The following values were computed from the NAD 83(1991) position.
 JV6772
 JV6772;                    North         East     Units Scale Factor Converg.
 JV6772;SPC MD       -   212,647.848   456,073.238   MT  1.00002543   +0 24 34.7
 JV6772;SPC MD       -   697,662.15  1,496,300.28   sFT  1.00002543   +0 24 34.7
 JV6772;UTM  18      - 4,382,060.231   384,288.221   MT  0.99976485   -0 51 30.9
 JV6772
 JV6772!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6772!SPC MD       -   1.00000517  x   1.00002543  =   1.00003060
 JV6772!UTM  18      -   1.00000517  x   0.99976485  =   0.99977002
 JV6772
 JV6772_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8428882060(NAD 83)
 JV6772
 JV6772                          SUPERSEDED SURVEY CONTROL
 JV6772
 JV6772  NAD 83(1986)-  39 34 49.62610(N)    076 20 50.44983(W) AD(       ) 3
 JV6772
 JV6772.Superseded values are not recommended for survey control.
 JV6772
 JV6772.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6772.See file dsdata.pdf to determine how the superseded data were derived.
 JV6772
 JV6772_MARKER: 43 = RADIO/TV TOWER
 JV6772_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6772_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV6772_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6772+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6772
 JV6772  HISTORY     - Date     Condition        Report By
 JV6772  HISTORY     - 1989     FIRST OBSERVED   RDA
 JV6772
 JV6772                          STATION DESCRIPTION
 JV6772
 JV6772'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6772'THE AZIMUTH MARK IS A RED LIGHT ATOP A RADIO TOWER LOCATED IN HICKORY,
 JV6772'MARYLAND APPROXIMATELY 3 MILES FROM HARFORD COUNTY STATION 40 MT. ZION
 JV6772'AT A 316 DEGREE NORTH AZIMUTH, AND APPROXIMATELY 1 MILE FROM HARFORD
 JV6772'COUNTY STATION 56 HILLNDALE AT A 185 DEGREE NORTH AZIMUTH, AND
 JV6772'APPROXIMATELY 4 MILES FROM HARFORD COUNTY STATION 111 LANDFILL AT A
 JV6772'211 DEGREE NORTH AZIMUTH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4746 ***********************************************************************
 JV4746  DESIGNATION -  HICKS
 JV4746  PID         -  JV4746
 JV4746  STATE/COUNTY-  MD/WASHINGTON
 JV4746  COUNTRY     -  US
 JV4746  USGS QUAD   -  MASON AND DIXON (2019)
 JV4746
 JV4746                         *CURRENT SURVEY CONTROL
 JV4746  ______________________________________________________________________
 JV4746* NAD 83(1991) POSITION- 39 41 44.37465(N) 077 52 30.88516(W)   ADJUSTED
 JV4746* NAVD 88 ORTHO HEIGHT -   176.    (meters)      577.    (feet) SCALED
 JV4746  ______________________________________________________________________
 JV4746  GEOID HEIGHT    -        -34.318 (meters)                     GEOID18
 JV4746  LAPLACE CORR    -         -1.28  (seconds)                    DEFLEC18
 JV4746  HORZ ORDER      -  SECOND
 JV4746
 JV4746.The horizontal coordinates were established by classical geodetic methods
 JV4746.and adjusted by the National Geodetic Survey in January 1992.
 JV4746
 JV4746.The orthometric height was scaled from a topographic map.
 JV4746
 JV4746.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4746.GEOID18 height accuracy estimate available here.
 JV4746
 JV4746.Click photographs - Photos may exist for this station.
 JV4746
 JV4746.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4746
 JV4746. The following values were computed from the NAD 83(1991) position.
 JV4746
 JV4746;                    North         East     Units Scale Factor Converg.
 JV4746;SPC MD       -   225,598.937   324,925.857   MT  1.00005222   -0 32 57.6
 JV4746;SPC MD       -   740,152.51  1,066,027.58   sFT  1.00005222   -0 32 57.6
 JV4746;SPC PA S     -    40,238.771   589,256.955   MT  1.00004566   -0 04 52.5
 JV4746;SPC PA S     -   132,016.70  1,933,253.86   sFT  1.00004566   -0 04 52.5
 JV4746;SPC WV N     -   133,999.162   739,342.258   MT  0.99994148   +1 02 10.4
 JV4746;SPC WV N     -   439,628.92  2,425,658.72   sFT  0.99994148   +1 02 10.4
 JV4746;UTM  18      - 4,397,932.112   253,464.505   MT  1.00034836   -1 50 14.5
 JV4746
 JV4746!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4746!SPC MD       -   0.99997780  x   1.00005222  =   1.00003002
 JV4746!SPC PA S     -   0.99997780  x   1.00004566  =   1.00002346
 JV4746!SPC WV N     -   0.99997780  x   0.99994148  =   0.99991929
 JV4746!UTM  18      -   0.99997780  x   1.00034836  =   1.00032616
 JV4746
 JV4746:                Primary Azimuth Mark                     Grid Az
 JV4746:SPC MD       -  HICKS AZ MK                              056 38 53.6
 JV4746:SPC PA S     -  HICKS AZ MK                              056 10 48.5
 JV4746:SPC WV N     -  HICKS AZ MK                              055 03 45.6
 JV4746:UTM  18      -  HICKS AZ MK                              057 56 10.5
 JV4746
 JV4746_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5346497932(NAD 83)
 JV4746
 JV4746|---------------------------------------------------------------------|
 JV4746| PID    Reference Object                     Distance      Geod. Az  |
 JV4746|                                                           dddmmss.s |
 JV4746| CJ9972 HICKS AZ MK                                        0560556.0 |
 JV4746| JV4671 FORT RITCHIE SITE A TANK            APPROX.15.3 KM 0632040.6 |
 JV4746| CJ9973 HICKS RM 1                            8.666 METERS 23656     |
 JV4746| CJ9974 HICKS RM 2                            9.760 METERS 32240     |
 JV4746|---------------------------------------------------------------------|
 JV4746
 JV4746                          SUPERSEDED SURVEY CONTROL
 JV4746
 JV4746  NAD 83(1986)-  39 41 44.37343(N)    077 52 30.89383(W) AD(       ) 2
 JV4746  NAD 27      -  39 41 44.03300(N)    077 52 31.90700(W) AD(       ) 2
 JV4746
 JV4746.Superseded values are not recommended for survey control.
 JV4746
 JV4746.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4746.See file dsdata.pdf to determine how the superseded data were derived.
 JV4746
 JV4746_MARKER: DS = TRIANGULATION STATION DISK
 JV4746_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4746_STAMPING: HICKS 1955
 JV4746_MARK LOGO: CGS
 JV4746_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4746+STABILITY: SURFACE MOTION
 JV4746
 JV4746  HISTORY     - Date     Condition        Report By
 JV4746  HISTORY     - 1955     MONUMENTED       CGS
 JV4746  HISTORY     - 1962     GOOD             CGS
 JV4746  HISTORY     - 1967     GOOD             CGS
 JV4746
 JV4746                          STATION DESCRIPTION
 JV4746
 JV4746'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4746'THE STATION IS LOCATED ABOUT 4 MILES NORTHEAST OF CLEAR SPRING.  IT
 JV4746'IS 40 FEET NORTH OF THE CENTER OF A T-JUNCTION FORMED BY THE
 JV4746'HICKSVILLE ROAD AND A PRIVATE FARM ROAD, 56.1 FEET NORTHEAST OF
 JV4746'A TELEPHONE POLE AND 73 FEET WEST OF A TELEPHONE POLE.
 JV4746'
 JV4746'TO REACH THE STATION FROM THE POST OFFICE IN CLEAR SPRING, GO EAST
 JV4746'ON U.S. HIGHWAY 40 FOR 2.5 MILES TO STATE HIGHWAY 57 AT ST. PAULS
 JV4746'CHURCH, TURN LEFT AND GO NORTH ON HIGHWAY 57 FOR 2.3 MILES TO A
 JV4746'CROSSROADS, TURN RIGHT AND GO EAST ON HICKSVILLE ROAD FOR 0.4
 JV4746'MILE TO THE STATION ON THE LEFT, CONTINUE EASTERLY FOR 0.2 MILE
 JV4746'TO THE AZIMUTH MARK ON THE RIGHT.
 JV4746'
 JV4746'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 JV4746'HICKS 1955.
 JV4746'
 JV4746'REFERENCE MARK 1 IS NEAR THE APPROXIMATE CENTER OF A SMALL TRIANGLE
 JV4746'FORMED BY THE ROADS AND 28 FEET NORTHEAST OF A TELEPHONE POLE.  THE
 JV4746'MARK PROJECTS 2 INCHES, AND THE DISK IS STAMPED HICKS NO 1 1955.
 JV4746'
 JV4746'REFERENCE MARK 2 IS 10 FEET EAST OF THE CENTER OF THE PRIVATE
 JV4746'ROAD.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 JV4746'HICKS NO 2 1955.
 JV4746'
 JV4746'THE AZIMUTH MARK IS 9 FEET SOUTHEAST OF THE CENTER OF THE
 JV4746'HICKSVILLE ROAD, 2 FEET WEST OF A 4 IN X 4 IN WHITE WITNESS POST
 JV4746'AND 1 FOOT NORTHWEST OF A FENCE.  THE MARK PROJECTS 4 INCHES, AND
 JV4746'THE DISK IS STAMPED HICKS 1955.
 JV4746
 JV4746                          STATION RECOVERY (1962)
 JV4746
 JV4746'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (JPP)
 JV4746'THIS STATION, REFERENCE MARK NO 2, AND THE AZIMUTH MARK, WERE
 JV4746'RECOVERED AS DESCRIBED, AND ALL FOUND TO BE IN GOOD
 JV4746'CONDITION.  PAVEMENT HAD BEEN PLACED OVER THE POSITION OF
 JV4746'REFERENCE MARK NO 1.
 JV4746
 JV4746                          STATION RECOVERY (1967)
 JV4746
 JV4746'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JCB)
 JV4746'STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS BUT REFERENCE
 JV4746'MARK NO. 1 WERE FOUND TO BE IN GOOD CONDITION.  REFERENCE MARK
 JV4746'NO. 1 HAS BEEN COVERED BY A BLACKTOP DRIVEWAY LEADING TO FARM
 JV4746'HOUSE.
 JV4746'
 JV4746'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4746'4.0 MILES NORTHEAST OF CLEAR SPRING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6578 ***********************************************************************
 JV6578  DESIGNATION -  HICUM 2
 JV6578  PID         -  JV6578
 JV6578  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV6578  COUNTRY     -  US
 JV6578  USGS QUAD   -  RELAY (2016)
 JV6578
 JV6578                         *CURRENT SURVEY CONTROL
 JV6578  ______________________________________________________________________
 JV6578* NAD 83(1991) POSITION- 39 12 17.14972(N) 076 38 31.99038(W)   ADJUSTED
 JV6578* NAVD 88 ORTHO HEIGHT -    50.17  (meters)      164.6   (feet) RESET
 JV6578  ______________________________________________________________________
 JV6578  GEOID HEIGHT    -        -32.748 (meters)                     GEOID18
 JV6578  LAPLACE CORR    -         -5.41  (seconds)                    DEFLEC18
 JV6578  HORZ ORDER      -  THIRD
 JV6578  VERT ORDER      -  THIRD
 JV6578
 JV6578.The horizontal coordinates were established by classical geodetic methods
 JV6578.and adjusted by the National Geodetic Survey in January 1992.
 JV6578
 JV6578.The orthometric height was computed from unverified reset data.
 JV6578
 JV6578.No vertical observational check was made to the station.
 JV6578
 JV6578.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6578.GEOID18 height accuracy estimate available here.
 JV6578
 JV6578.Click photographs - Photos may exist for this station.
 JV6578
 JV6578.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6578
 JV6578. The following values were computed from the NAD 83(1991) position.
 JV6578
 JV6578;                    North         East     Units Scale Factor Converg.
 JV6578;SPC MD       -   170,798.168   430,902.583   MT  0.99996629   +0 13 28.4
 JV6578;SPC MD       -   560,360.32  1,413,719.56   sFT  0.99996629   +0 13 28.4
 JV6578;UTM  18      - 4,340,784.507   358,204.162   MT  0.99984757   -1 02 17.6
 JV6578
 JV6578!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6578!SPC MD       -   0.99999727  x   0.99996629  =   0.99996356
 JV6578!UTM  18      -   0.99999727  x   0.99984757  =   0.99984484
 JV6578
 JV6578_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5820440784(NAD 83)
 JV6578
 JV6578|---------------------------------------------------------------------|
 JV6578| PID    Reference Object                     Distance      Geod. Az  |
 JV6578|                                                           dddmmss.s |
 JV6578| JV0973 HICUM                                65.882 METERS 06452     |
 JV6578| JV0974 HICUM RM 2                           85.101 METERS 07533     |
 JV6578|---------------------------------------------------------------------|
 JV6578
 JV6578                          SUPERSEDED SURVEY CONTROL
 JV6578
 JV6578  NAD 83(1986)-  39 12 17.14657(N)    076 38 31.99985(W) AD(       ) 3
 JV6578  NGVD 29 (11/18/05)   50.41   (m)          165.4    (f) RESET       3  
 JV6578  NGVD 29              50.41   (m)          165.4    (f) LEVELING    3  
 JV6578
 JV6578.Superseded values are not recommended for survey control.
 JV6578
 JV6578.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6578.See file dsdata.pdf to determine how the superseded data were derived.
 JV6578
 JV6578_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6578_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6578_STAMPING: HICUM 1957 1988
 JV6578_MARK LOGO: NGS
 JV6578_PROJECTION: FLUSH
 JV6578_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6578_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6578+STABILITY: SURFACE MOTION
 JV6578_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6578+SATELLITE: SATELLITE OBSERVATIONS - 1988
 JV6578
 JV6578  HISTORY     - Date     Condition        Report By
 JV6578  HISTORY     - 1988     MONUMENTED       NGS
 JV6578  HISTORY     - 20221005 GOOD             WTBALL
 JV6578
 JV6578                          STATION DESCRIPTION
 JV6578
 JV6578'DESCRIBED BY NATIONAL GEODETIC SURVEY 1988
 JV6578'THE STATION IS LOCATED ABOUT 9.8 KM (6.10 MI) SOUTH OF THE APPROXIMATE
 JV6578'CENTER OF BALTIMORE, 1.5 KM (0.95 MI) EAST OF LINTHICUM AND IN THE
 JV6578'SOUTHWEST ANGLE OF THE INTERSECTION OF INTERSTATE 695 AND STATE
 JV6578'HIGHWAY 648.  IT IS IN A GRASS COVERED AREA JUST OUTSIDE OF THE
 JV6578'CLOVER-LEAF WHICH MAKES UP THE INTERSECTION.  OWNERSHIP--ROAD
 JV6578'RIGHT-OF-WAY.
 JV6578'THE STATION DISK IS SET IN A MASSIVE ROUND CONCRETE MONUMENT WHICH IS
 JV6578'0.65 M (2.1 FT) ROUND AND ABOUT 2 M (6.6 FT) DEEP IN THE GROUND. IT IS
 JV6578'16.5 M (54.1 FT) NORTH-NORTHWEST OF A POWERLINE POLE NUMBERED 22
 JV6578'491541, 4.6 M (15.1 FT) EAST OF THE ROAD RIGHT-OF-WAY FENCE, 9.4 M
 JV6578'(30.8 FT) SOUTHEAST OF ANOTHER POWERLINE POLE NUMBERED 292188 AND 56.4
 JV6578'M (185.0 FT) WEST OF THE CENTER OF THE NORTH BOUND LANE OF STATE
 JV6578'HIGHWAY 648.
 JV6578
 JV6578                          STATION RECOVERY (2022)
 JV6578
 JV6578'RECOVERY NOTE BY THE WILSON T BALLARD COMPANY 2022 (NAW)
 JV6578'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3151 ***********************************************************************
 DI3151  DESIGNATION -  HIGGINS 1
 DI3151  PID         -  DI3151
 DI3151  STATE/COUNTY-  MD/TALBOT
 DI3151  COUNTRY     -  US
 DI3151  USGS QUAD   -  SAINT MICHAELS (2016)
 DI3151
 DI3151                         *CURRENT SURVEY CONTROL
 DI3151  ______________________________________________________________________
 DI3151* NAD 83(2011) POSITION- 38 46 31.35746(N) 076 12 53.80332(W)   ADJUSTED
 DI3151* NAD 83(2011) ELLIP HT-   -32.254 (meters)        (06/27/12)   ADJUSTED
 DI3151* NAD 83(2011) EPOCH   -  2010.00
 DI3151* NAVD 88 ORTHO HEIGHT -     2.120 (meters)        6.96  (feet) ADJUSTED
 DI3151  ______________________________________________________________________
 DI3151  GEOID HEIGHT    -        -34.375 (meters)                     GEOID18
 DI3151  NAD 83(2011) X  -  1,186,386.534 (meters)                     COMP
 DI3151  NAD 83(2011) Y  - -4,835,545.438 (meters)                     COMP
 DI3151  NAD 83(2011) Z  -  3,972,887.090 (meters)                     COMP
 DI3151  LAPLACE CORR    -         -4.76  (seconds)                    DEFLEC18
 DI3151  DYNAMIC HEIGHT  -          2.119 (meters)        6.95  (feet) COMP
 DI3151  MODELED GRAVITY -    980,043.7   (mgal)                       NAVD 88
 DI3151
 DI3151  VERT ORDER      -  SECOND    CLASS I
 DI3151
 DI3151  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3151  Standards:
 DI3151         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3151            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3151  -------------------------------------------------------------------
 DI3151  NETWORK    0.60   0.74           0.27   0.21   0.38      0.20137106
 DI3151  -------------------------------------------------------------------
 DI3151  Click here for local accuracies and other accuracy information.
 DI3151
 DI3151.The horizontal coordinates were established by GPS observations
 DI3151.and adjusted by the National Geodetic Survey in June 2012.
 DI3151
 DI3151.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3151.been affixed to the stable North American tectonic plate. See 
 DI3151.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3151
 DI3151.The horizontal coordinates are valid at the epoch date displayed above
 DI3151.which is a decimal equivalence of Year/Month/Day.
 DI3151
 DI3151.The orthometric height was determined by differential leveling and
 DI3151.adjusted by the NATIONAL GEODETIC SURVEY
 DI3151.in February 2024.
 DI3151
 DI3151.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3151.GEOID18 height accuracy estimate available here.
 DI3151
 DI3151.Click photographs - Photos may exist for this station.
 DI3151
 DI3151.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3151
 DI3151.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3151
 DI3151.The ellipsoidal height was determined by GPS observations
 DI3151.and is referenced to NAD 83.
 DI3151
 DI3151.The dynamic height is computed by dividing the NAVD 88
 DI3151.geopotential number by the normal gravity value computed on the
 DI3151.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DI3151.degrees latitude (g = 980.6199 gals.).
 DI3151
 DI3151.The modeled gravity was interpolated from observed gravity values.
 DI3151
 DI3151. The following values were computed from the NAD 83(2011) position.
 DI3151
 DI3151;                    North         East     Units Scale Factor Converg.
 DI3151;SPC MD       -   123,364.625   468,216.800   MT  0.99995138   +0 29 33.8
 DI3151;SPC MD       -   404,738.77  1,536,141.28   sFT  0.99995138   +0 29 33.8
 DI3151;UTM  18      - 4,292,551.241   394,462.202   MT  0.99973716   -0 45 39.4
 DI3151
 DI3151!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3151!SPC MD       -   1.00000506  x   0.99995138  =   0.99995644
 DI3151!UTM  18      -   1.00000506  x   0.99973716  =   0.99974222
 DI3151
 DI3151:                Primary Azimuth Mark                     Grid Az
 DI3151:SPC MD       -  HIGGINS 2                                311 44 05.3
 DI3151:UTM  18      -  HIGGINS 2                                312 59 18.5
 DI3151
 DI3151_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9446292551(NAD 83)
 DI3151
 DI3151|---------------------------------------------------------------------|
 DI3151| PID    Reference Object                     Distance      Geod. Az  |
 DI3151|                                                           dddmmss.s |
 DI3151| DI3152 HIGGINS 2                           441.787 METERS 3121339.1 |
 DI3151|---------------------------------------------------------------------|
 DI3151
 DI3151                          SUPERSEDED SURVEY CONTROL
 DI3151
 DI3151  NAD 83(1991)-  38 46 31.35754(N)    076 12 53.80419(W) AD(       ) 1
 DI3151  ELLIP H (01/05/07)  -32.212  (m)                       GP(       ) 4 2
 DI3151  NAVD 88 (01/05/07)    2.1    (m)  GEOID03  model used  GPS OBS        
 DI3151
 DI3151.Superseded values are not recommended for survey control.
 DI3151
 DI3151.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3151.See file dsdata.pdf to determine how the superseded data were derived.
 DI3151
 DI3151_MARKER: DD = SURVEY DISK
 DI3151_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3151_STAMPING: HIGGINS 1
 DI3151_MARK LOGO: MD-041
 DI3151_PROJECTION: RECESSED 8 CENTIMETERS
 DI3151_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3151_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3151+STABILITY: SURFACE MOTION
 DI3151_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3151+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 DI3151
 DI3151  HISTORY     - Date     Condition        Report By
 DI3151  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3151  HISTORY     - 20231213 GOOD             MDSHA
 DI3151
 DI3151                          STATION DESCRIPTION
 DI3151
 DI3151'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3151'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR ST. MICHAELS,
 DI3151'MARYLAND.  IT IS  ABOUT 8.1 MI (13.0 KM) WEST OF EASTON, MARYLAND,
 DI3151'ABOUT 16.3 MI (26.2 KM) NORTHWEST OF  CAMBRIDGE, MARYLAND AND ABOUT
 DI3151'13.6 MI (21.9 KM) SOUTHWEST OF WYE MILLS, MARYLAND.               TO
 DI3151'REACH THE STATION FROM THE INTERSECTION SR322 (EASTON BYPASS) AND SR
 DI3151'33 (ST. MICHAELS  ROAD/ EASTON CLAIBORNE ROAD) PROCEED WEST ON SR33
 DI3151'FOR 8.5 MI (13.7 KM) TO THE STATION ON  THE LEFT.
 DI3151'STATION IS 16.0 FT (4.9 M) SOUTHWEST OF THE SOUTHWEST EDGE OF ST.
 DI3151'MICHAELS ROAD ACROSS  THE STREET FROM THE ST. MICHAELS FIRE
 DI3151'DEPARTMENT, 39.0 FT (14.9 M) NORTHWEST OF THE END  OF THE GUARDRAIL
 DI3151'AND 42.0 FT (12.8 M)  SOUTHEAST OF ELECTRIC POLE DPL 29401-08242.  A 3
 DI3151'IN  BRASS DISK STAMPED HIGGINS 1 SET IN THE TOP OF A 1 FT (0.3 M)
 DI3151'CONCRETE MONUMENT RECESSED  0.3 FT BELOW THE GROUND.
 DI3151
 DI3151                          STATION RECOVERY (2023)
 DI3151
 DI3151'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DI3151'RECOVERED IN GOOD CONDITION.
 DI3151'
 DI3151'NOTE-ADD-THE MARK IS 37.7 FT (11.5 M) SOUTHWEST OF THE CENTERLINE OF
 DI3151'STATE ROUTE 33, 27.8 FT (8.5 M) NORTHWEST OF THE SOUTHWEST CORNER OF A
 DI3151'CONCRETE HEADWALL, 20.6 FT (6.3 M) NORTHWEST OF THE NORTHWEST CORNER
 DI3151'OF A CONCRETE HEADWALL AND 19.8 FT (6.0 M) NORTHEAST OF A PAVED TRAIL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3152 ***********************************************************************
 DI3152  DESIGNATION -  HIGGINS 2
 DI3152  PID         -  DI3152
 DI3152  STATE/COUNTY-  MD/TALBOT
 DI3152  COUNTRY     -  US
 DI3152  USGS QUAD   -  SAINT MICHAELS (2016)
 DI3152
 DI3152                         *CURRENT SURVEY CONTROL
 DI3152  ______________________________________________________________________
 DI3152* NAD 83(2011) POSITION- 38 46 40.98593(N) 076 13 07.35609(W)   ADJUSTED
 DI3152* NAD 83(2011) ELLIP HT-   -31.947 (meters)        (06/27/12)   ADJUSTED
 DI3152* NAD 83(2011) EPOCH   -  2010.00
 DI3152* NAVD 88 ORTHO HEIGHT -     2.414 (meters)        7.92  (feet) ADJUSTED
 DI3152  ______________________________________________________________________
 DI3152  GEOID HEIGHT    -        -34.360 (meters)                     GEOID18
 DI3152  NAD 83(2011) X  -  1,186,024.570 (meters)                     COMP
 DI3152  NAD 83(2011) Y  - -4,835,443.017 (meters)                     COMP
 DI3152  NAD 83(2011) Z  -  3,973,118.748 (meters)                     COMP
 DI3152  LAPLACE CORR    -         -4.78  (seconds)                    DEFLEC18
 DI3152  DYNAMIC HEIGHT  -          2.413 (meters)        7.92  (feet) COMP
 DI3152  MODELED GRAVITY -    980,044.3   (mgal)                       NAVD 88
 DI3152
 DI3152  VERT ORDER      -  SECOND    CLASS I
 DI3152
 DI3152  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3152  Standards:
 DI3152         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3152            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3152  -------------------------------------------------------------------
 DI3152  NETWORK    0.60   0.74           0.27   0.21   0.38      0.20049053
 DI3152  -------------------------------------------------------------------
 DI3152  Click here for local accuracies and other accuracy information.
 DI3152
 DI3152.The horizontal coordinates were established by GPS observations
 DI3152.and adjusted by the National Geodetic Survey in June 2012.
 DI3152
 DI3152.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3152.been affixed to the stable North American tectonic plate. See 
 DI3152.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3152
 DI3152.The horizontal coordinates are valid at the epoch date displayed above
 DI3152.which is a decimal equivalence of Year/Month/Day.
 DI3152
 DI3152.The orthometric height was determined by differential leveling and
 DI3152.adjusted by the NATIONAL GEODETIC SURVEY
 DI3152.in February 2024.
 DI3152
 DI3152.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3152.GEOID18 height accuracy estimate available here.
 DI3152
 DI3152.Click photographs - Photos may exist for this station.
 DI3152
 DI3152.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3152
 DI3152.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3152
 DI3152.The ellipsoidal height was determined by GPS observations
 DI3152.and is referenced to NAD 83.
 DI3152
 DI3152.The dynamic height is computed by dividing the NAVD 88
 DI3152.geopotential number by the normal gravity value computed on the
 DI3152.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DI3152.degrees latitude (g = 980.6199 gals.).
 DI3152
 DI3152.The modeled gravity was interpolated from observed gravity values.
 DI3152
 DI3152. The following values were computed from the NAD 83(2011) position.
 DI3152
 DI3152;                    North         East     Units Scale Factor Converg.
 DI3152;SPC MD       -   123,658.701   467,887.140   MT  0.99995130   +0 29 25.3
 DI3152;SPC MD       -   405,703.59  1,535,059.73   sFT  0.99995130   +0 29 25.3
 DI3152;UTM  18      - 4,292,852.395   394,139.124   MT  0.99973800   -0 45 48.1
 DI3152
 DI3152!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3152!SPC MD       -   1.00000501  x   0.99995130  =   0.99995631
 DI3152!UTM  18      -   1.00000501  x   0.99973800  =   0.99974301
 DI3152
 DI3152:                Primary Azimuth Mark                     Grid Az
 DI3152:SPC MD       -  HIGGINS 1                                131 44 05.3
 DI3152:UTM  18      -  HIGGINS 1                                132 59 18.7
 DI3152
 DI3152_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9413992852(NAD 83)
 DI3152
 DI3152|---------------------------------------------------------------------|
 DI3152| PID    Reference Object                     Distance      Geod. Az  |
 DI3152|                                                           dddmmss.s |
 DI3152| DI3151 HIGGINS 1                           441.787 METERS 1321330.6 |
 DI3152|---------------------------------------------------------------------|
 DI3152
 DI3152                          SUPERSEDED SURVEY CONTROL
 DI3152
 DI3152  NAD 83(1991)-  38 46 40.98602(N)    076 13 07.35696(W) AD(       ) 1
 DI3152  ELLIP H (01/05/07)  -31.905  (m)                       GP(       ) 4 2
 DI3152  NAVD 88 (01/05/07)    2.4    (m)  GEOID03  model used  GPS OBS        
 DI3152
 DI3152.Superseded values are not recommended for survey control.
 DI3152
 DI3152.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3152.See file dsdata.pdf to determine how the superseded data were derived.
 DI3152
 DI3152_MARKER: DD = SURVEY DISK
 DI3152_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3152_STAMPING: HIGGINS 2
 DI3152_MARK LOGO: MD-041
 DI3152_PROJECTION: RECESSED 8 CENTIMETERS
 DI3152_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3152_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3152+STABILITY: SURFACE MOTION
 DI3152_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3152+SATELLITE: SATELLITE OBSERVATIONS - December 13, 2023
 DI3152
 DI3152  HISTORY     - Date     Condition        Report By
 DI3152  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3152  HISTORY     - 20210809 GOOD             MDSHA
 DI3152  HISTORY     - 20231213 GOOD             MDSHA
 DI3152
 DI3152                          STATION DESCRIPTION
 DI3152
 DI3152'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3152'THE STATION IS LOCATED IN TALBOT COUNTY, MARYLAND, NEAR ST. MICHAELS,
 DI3152'MARYLAND.  IT IS  ABOUT 8.3 MI (13.3 KM) WEST OF EASTON, MARYLAND,
 DI3152'ABOUT 16.7 MI (26.9 KM) NORTHWEST OF  CAMBRIDGE, MARYLAND AND ABOUT
 DI3152'13.6 MI (21.9 KM) SOUTHWEST OF WYE MILLS, MARYLAND.               TO
 DI3152'REACH THE STATION FROM THE INTERSECTION SR322 (EASTON BYPASS) AND SR
 DI3152'33 (ST. MICHAELS  ROAD/ EASTON CLAIBORNE ROAD) PROCEED WEST ON SR33
 DI3152'FOR 8.8 MI (14.2 KM) TO THE STATION ON  THE LEFT.
 DI3152'STATION IS 15.0 FT (4.6 M) SOUTHWEST OF THE SOUTHWEST EDGE OF ST.
 DI3152'MICHAELS ROAD, 50.0 FT  (15.2 M) SOUTHEAST OF ELECTRIC POLE DPL
 DI3152'29294-08340 AND 58.0 FT (17.7 M)  SOUTHWEST OF  ELECTRIC POLE DPL
 DI3152'29301-08342.  A 3 IN BRASS DISK STAMPED HIGGINS 2 SET IN THE TOP OF A
 DI3152'1 FT  (0.3 M) CONCRETE MONUMENT RECESSED 0.3 FT BELOW THE GROUND.
 DI3152
 DI3152                          STATION RECOVERY (2021)
 DI3152
 DI3152'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (WAC)
 DI3152'THE MARK IS SITUATED 51.0 FEET (15.5 M) SOUTHEAST OF CHOPTANK POLE 632
 DI3152'23 (FORMERLY DPL 29294 0834) AND 94.0 FEET (28.7 M) NORTHWEST OF
 DI3152'CHOPTANK POLE 632 24.
 DI3152
 DI3152                          STATION RECOVERY (2023)
 DI3152
 DI3152'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DI3152'RECOVERED IN GOOD CONDITION.
 DI3152'
 DI3152'NOTE-ADD-THE MARK IS 94.1 FT (28.7 M) NORTHWEST OF A UTILITY POLE
 DI3152'NUMBERED CHOPTANK 632-24 AND 51.0 FT (15.5 M) SOUTHEAST OF A UTILITY
 DI3152'POLE NUMBERED CHOPTANK 632-23.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5765 ***********************************************************************
 JV5765  DESIGNATION -  HIGH
 JV5765  PID         -  JV5765
 JV5765  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5765  COUNTRY     -  US
 JV5765  USGS QUAD   -  ROUND BAY (2016)
 JV5765
 JV5765                         *CURRENT SURVEY CONTROL
 JV5765  ______________________________________________________________________
 JV5765* NAD 83(1991) POSITION- 39 03 34.01202(N) 076 32 45.83915(W)   ADJUSTED
 JV5765* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV5765  ______________________________________________________________________
 JV5765  GEOID HEIGHT    -        -33.110 (meters)                     GEOID18
 JV5765  LAPLACE CORR    -         -4.32  (seconds)                    DEFLEC18
 JV5765  HORZ ORDER      -  THIRD
 JV5765
 JV5765.The horizontal coordinates were established by classical geodetic methods
 JV5765.and adjusted by the National Geodetic Survey in January 1992.
 JV5765
 JV5765.The orthometric height was scaled from a topographic map.
 JV5765
 JV5765.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5765.GEOID18 height accuracy estimate available here.
 JV5765
 JV5765.Click photographs - Photos may exist for this station.
 JV5765
 JV5765.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5765
 JV5765. The following values were computed from the NAD 83(1991) position.
 JV5765
 JV5765;                    North         East     Units Scale Factor Converg.
 JV5765;SPC MD       -   154,703.239   439,287.775   MT  0.99995497   +0 17 05.7
 JV5765;SPC MD       -   507,555.54  1,441,229.98   sFT  0.99995497   +0 17 05.7
 JV5765;UTM  18      - 4,324,511.002   366,232.116   MT  0.99982033   -0 58 27.7
 JV5765
 JV5765!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5765!SPC MD       -   1.00000382  x   0.99995497  =   0.99995879
 JV5765!UTM  18      -   1.00000382  x   0.99982033  =   0.99982415
 JV5765
 JV5765:                Primary Azimuth Mark                     Grid Az
 JV5765:SPC MD       -  SWAN                                     146 24 17.8
 JV5765:UTM  18      -  SWAN                                     147 39 51.2
 JV5765
 JV5765_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6623224511(NAD 83)
 JV5765
 JV5765|---------------------------------------------------------------------|
 JV5765| PID    Reference Object                     Distance      Geod. Az  |
 JV5765|                                                           dddmmss.s |
 JV5765| JV5763 HIGH RM                               8.630 METERS 02149     |
 JV5765| JV5768 SWAN                                APPROX. 1.3 KM 1464123.5 |
 JV5765|---------------------------------------------------------------------|
 JV5765
 JV5765                          SUPERSEDED SURVEY CONTROL
 JV5765
 JV5765  NAD 83(1986)-  39 03 34.00875(N)    076 32 45.84943(W) AD(       ) 3
 JV5765  NAD 27      -  39 03 33.61200(N)    076 32 46.98100(W) AD(       ) 3
 JV5765  USSD        -  39 03 33.95300(N)    076 32 46.84900(W) AD(       ) 3
 JV5765
 JV5765.Superseded values are not recommended for survey control.
 JV5765
 JV5765.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5765.See file dsdata.pdf to determine how the superseded data were derived.
 JV5765
 JV5765_MARK LOGO: CGS
 JV5765
 JV5765  HISTORY     - Date     Condition        Report By
 JV5765  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5765  HISTORY     - 1906     GOOD             CGS
 JV5765  HISTORY     - 1933     SEE DESCRIPTION  LOCENG
 JV5765  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5765
 JV5765                          STATION DESCRIPTION
 JV5765
 JV5765'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5765'ON THE NE SHORE OF ROUND BAY IN SEVERN RIVER, ON EAGLENEST POINT,
 JV5765'ON GROUND OCCUPIED BY THE ROUND BAY RESORT.  IT IS 15 FEET BACK
 JV5765'FROM EDGE OF BANK 20 FEET HIGH AND 25 PACES SW OF THE SW CORNER OF
 JV5765'THE DANCING PAVILION.  STATION MARKED BY NAIL IN PINE STUB WITH
 JV5765'TOP EVEN WITH SURFACE OF GROUND.  THIS STAKE IS INSIDE A 4-INCH
 JV5765'TILE PIPE SET WITH TOP 1 FOOT BELOW SURFACE.  REFERENCE MARK IS
 JV5765'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 JV5765'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5765'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5765'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 JV5765'IS 8.66 METERS (28.41 FEET) FROM STATION N 21 DEG
 JV5765'48 MIN E.  DISTANCES AND BEARINGS FROM THE STATION TO OTHER
 JV5765'POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY ON HOUSE ON
 JV5765'OPPOSITE SHORE, 1-1/2 MILES, S 15 DEG 16 MIN W.  CHIMNEY ON COTTAGE ON
 JV5765'LONG POINT, 1 MILE, S 32 DEG 12 MIN W.  GREEN WATER TOWER, 3/4
 JV5765'MILE, N 58 DEG 35 MIN W.  NAIL IN BLAZE IN 8-INCH PINE TREE, 7.98
 JV5765'METERS (26.18 FEET), N 20 DEG 12 MIN W.  SW CORNER OF DANCING
 JV5765'PAVILION, 25 YARDS, N 8 DEG 38 MIN E.  NAIL IN BLAZE IN
 JV5765'7-INCH PINE TREE, 7.58 METERS (24.87 FEET), N 40 DEG 48 MIN E.
 JV5765
 JV5765                          STATION RECOVERY (1933)
 JV5765
 JV5765'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1933 (BEB)
 JV5765'RECOVERED BY ANNE ARUNDEL CO. SANITARY COMMISSION.
 JV5765'
 JV5765'STATION RECOVERED, JUNE 30, 1933.  AT THAT TIME THE STATION WAS
 JV5765'AT THE EXTREME EDGE OF A STEEP BANK, AND WILL BE WASHED AWAY
 JV5765'VERY SOON.  THE REFERENCE MONUMENT AND THE OLD APARTMENT HOUSE
 JV5765'BUILDING ARE STILL EXTANT.  NOTE--FROM LETTER, B. EVERETT BEAVIN,
 JV5765'ANNE ARUNDEL COUNTY SANITARY COMMISSION, GLEN BURNIE, MD.
 JV5765
 JV5765                          STATION RECOVERY (1961)
 JV5765
 JV5765'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5765'NO TRACE OF THE STATION OR THE R.M. COULD BE FOUND.  THE AREA HAS
 JV5765'CHANGED COMPLETELY DUE TO EROSION AND NEW CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3490 ***********************************************************************
 JU3490  DESIGNATION -  HIGH
 JU3490  PID         -  JU3490
 JU3490  STATE/COUNTY-  MD/KENT
 JU3490  COUNTRY     -  US
 JU3490  USGS QUAD   -  CHURCH HILL (2017)
 JU3490
 JU3490                         *CURRENT SURVEY CONTROL
 JU3490  ______________________________________________________________________
 JU3490* NAD 83(1991) POSITION- 39 14 40.90200(N) 075 59 53.40093(W)   ADJUSTED
 JU3490* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JU3490  ______________________________________________________________________
 JU3490  GEOID HEIGHT    -        -33.475 (meters)                     GEOID18
 JU3490  LAPLACE CORR    -         -2.19  (seconds)                    DEFLEC18
 JU3490  HORZ ORDER      -  THIRD
 JU3490
 JU3490.The horizontal coordinates were established by classical geodetic methods
 JU3490.and adjusted by the National Geodetic Survey in January 1992.
 JU3490
 JU3490.The orthometric height was scaled from a topographic map.
 JU3490
 JU3490.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3490.GEOID18 height accuracy estimate available here.
 JU3490
 JU3490.Click photographs - Photos may exist for this station.
 JU3490
 JU3490.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3490
 JU3490. The following values were computed from the NAD 83(1991) position.
 JU3490
 JU3490;                    North         East     Units Scale Factor Converg.
 JU3490;SPC MD       -   175,645.165   486,481.199   MT  0.99997053   +0 37 43.6
 JU3490;SPC MD       -   576,262.51  1,596,063.73   sFT  0.99997053   +0 37 43.6
 JU3490;UTM  18      - 4,344,405.910   413,864.592   MT  0.99969135   -0 37 53.4
 JU3490
 JU3490!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3490!SPC MD       -   1.00000388  x   0.99997053  =   0.99997441
 JU3490!UTM  18      -   1.00000388  x   0.99969135  =   0.99969523
 JU3490
 JU3490:                Primary Azimuth Mark                     Grid Az
 JU3490:SPC MD       -  MED                                      097 03 15.8
 JU3490:UTM  18      -  MED                                      098 18 52.8
 JU3490
 JU3490_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1386444405(NAD 83)
 JU3490
 JU3490|---------------------------------------------------------------------|
 JU3490| PID    Reference Object                     Distance      Geod. Az  |
 JU3490|                                                           dddmmss.s |
 JU3490| JU3487 MED                                 APPROX. 0.5 KM 0974059.4 |
 JU3490|---------------------------------------------------------------------|
 JU3490
 JU3490                          SUPERSEDED SURVEY CONTROL
 JU3490
 JU3490  NAD 83(1986)-  39 14 40.89169(N)    075 59 53.41524(W) AD(       ) 3
 JU3490  NAD 27      -  39 14 40.48700(N)    075 59 54.62200(W) AD(       ) 3
 JU3490  USSD        -  39 14 40.97000(N)    075 59 54.37100(W) AD(       ) 3
 JU3490
 JU3490.Superseded values are not recommended for survey control.
 JU3490
 JU3490.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3490.See file dsdata.pdf to determine how the superseded data were derived.
 JU3490
 JU3490_MARKER: N = NAIL
 JU3490_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JU3490_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JU3490
 JU3490  HISTORY     - Date     Condition        Report By
 JU3490  HISTORY     - 1909     MONUMENTED       CGS
 JU3490  HISTORY     - 1939     MARK NOT FOUND   CGS
 JU3490  HISTORY     - 1979     MARK NOT FOUND   NGS
 JU3490
 JU3490                          STATION DESCRIPTION
 JU3490
 JU3490'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JU3490'STATION IS ON THE N SHORE OF CHESTER RIVER, ON THE HIGH LAND
 JU3490'ABOUT 1/4 MILE INSIDE OF SHORE LINE AND OPPOSITE THE MOUTH OF
 JU3490'FOREMAN BRANCH.
 JU3490'
 JU3490'STATION IS MARKED BY A BURIED GLASS BOTTLE AND A NAIL SET IN
 JU3490'CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN THE TOP OF
 JU3490'A 4-INCH DRAINTILE AT THE SURFACE OF THE GROUND.  REFERENCE MARKS
 JU3490'ARE TRIANGLES BLAZED ON THREE CEDAR TREES, WITH NAIL DRIVEN IN
 JU3490'CENTER OF EACH BLAZE.  THEY ARE AT THE FOLLOWING DISTANCES AND
 JU3490'BEARINGS FROM THE STATION--NO.1, 3.66 METERS (12.01 FEET), N 65
 JU3490'DEG 46 MIN W.  NO.2, 2.03 METERS (6.66 FEET), N 44 DEG 37 MIN W
 JU3490'NO.3, 4.51 METERS (14.80 FEET) N 72 DEG 47 MIN E.
 JU3490
 JU3490                          STATION RECOVERY (1939)
 JU3490
 JU3490'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JU3490'FIELD IN WHICH THE STATION WAS ORIGINALLY ESTABLISHED HAS BEEN
 JU3490'CULTIVATED AND STATION IS BELIEVED TO HAVE BEEN DESTROYED.
 JU3490
 JU3490                          STATION RECOVERY (1979)
 JU3490
 JU3490'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 JU3490'A SEARCH WAS MADE FOR THE STATION AND NO EVIDENCE OF IT WAS FOUND.  IT
 JU3490'IS POSSIBLE THAT THE STATION SUB-SURFACE STILL EXISTS BUT IS NOW
 JU3490'COVERED OVER.  A TRAVERSE IS REQUIRED TO LOCATE THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4611 ***********************************************************************
 JV4611  DESIGNATION -  HIGH KNOB 2
 JV4611  PID         -  JV4611
 JV4611  STATE/COUNTY-  MD/FREDERICK
 JV4611  COUNTRY     -  US
 JV4611  USGS QUAD   -  FREDERICK (2016)
 JV4611
 JV4611                         *CURRENT SURVEY CONTROL
 JV4611  ______________________________________________________________________
 JV4611* NAD 83(2011) POSITION- 39 27 42.67470(N) 077 29 43.48615(W)   ADJUSTED
 JV4611* NAD 83(2011) ELLIP HT-   440.343 (meters)        (06/27/12)   ADJUSTED
 JV4611* NAD 83(2011) EPOCH   -  2010.00
 JV4611* NAVD 88 ORTHO HEIGHT -   473.3   (meters)     1553.    (feet) VERTCON3
 JV4611  ______________________________________________________________________
 JV4611  GEOID HEIGHT    -        -32.909 (meters)                     GEOID18
 JV4611  NAD 83(2011) X  -  1,067,700.830 (meters)                     COMP
 JV4611  NAD 83(2011) Y  - -4,814,263.138 (meters)                     COMP
 JV4611  NAD 83(2011) Z  -  4,032,314.553 (meters)                     COMP
 JV4611  LAPLACE CORR    -          5.18  (seconds)                    DEFLEC18
 JV4611
 JV4611  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV4611  Standards:
 JV4611         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV4611            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV4611  -------------------------------------------------------------------
 JV4611  NETWORK    2.19   2.80           0.97   0.81   1.43     -0.07780350
 JV4611  -------------------------------------------------------------------
 JV4611  Click here for local accuracies and other accuracy information.
 JV4611
 JV4611.The horizontal coordinates were established by GPS observations
 JV4611.and adjusted by the National Geodetic Survey in June 2012.
 JV4611
 JV4611.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV4611.been affixed to the stable North American tectonic plate. See 
 JV4611.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV4611
 JV4611.The horizontal coordinates are valid at the epoch date displayed above
 JV4611.which is a decimal equivalence of Year/Month/Day.
 JV4611
 JV4611.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4611.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4611
 JV4611.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4611.GEOID18 height accuracy estimate available here.
 JV4611
 JV4611.Click photographs - Photos may exist for this station.
 JV4611
 JV4611.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV4611
 JV4611.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4611
 JV4611.The ellipsoidal height was determined by GPS observations
 JV4611.and is referenced to NAD 83.
 JV4611
 JV4611. The following values were computed from the NAD 83(2011) position.
 JV4611
 JV4611;                    North         East     Units Scale Factor Converg.
 JV4611;SPC MD       -   199,395.438   357,364.686   MT  1.00000210   -0 18 39.4
 JV4611;SPC MD       -   654,183.20  1,172,453.97   sFT  1.00000210   -0 18 39.4
 JV4611;UTM  18      - 4,371,003.413   285,316.449   MT  1.00016749   -1 35 11.8
 JV4611
 JV4611!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4611!SPC MD       -   0.99993092  x   1.00000210  =   0.99993302
 JV4611!UTM  18      -   0.99993092  x   1.00016749  =   1.00009840
 JV4611
 JV4611:                Primary Azimuth Mark                     Grid Az
 JV4611:SPC MD       -  HIGH KNOB 2 AZ MK RESET                  173 38 04.7
 JV4611:UTM  18      -  HIGH KNOB 2 AZ MK RESET                  174 54 37.1
 JV4611
 JV4611_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8531671003(NAD 83)
 JV4611
 JV4611|---------------------------------------------------------------------|
 JV4611| PID    Reference Object                     Distance      Geod. Az  |
 JV4611|                                                           dddmmss.s |
 JV4611| CK7472 HIGH KNOB 2 RM 2                     16.582 METERS 00619     |
 JV4611| JV4612 FREDERICK OX FIBRE BRUSH CO TK      APPROX. 9.5 KM 1221331.8 |
 JV4611| JV4599 FREDERICK MEMORIAL HOSP STACK       APPROX. 8.4 KM 1222635.8 |
 JV4611| JV4608 FREDERICK EVAN LUTH CH W SPIRE      APPROX. 9.0 KM 1245218.5 |
 JV4611| JV4600 FREDERICK MD SCH FOR DEAF FIN       APPROX. 9.4 KM 1285507.9 |
 JV4611| CK7470 HIGH KNOB 2 AZ MK RESET                            1731925.3 |
 JV4611| CK7469 HIGH KNOB 2 AZ MK                                  1762505.3 |
 JV4611| JV4616 MIDDLETOWN CHRIST REFORMED CH       APPROX. 4.8 KM 2434348.4 |
 JV4611| JV4618 MIDDLETOWN LUTH EVAN CH SPIRE       APPROX. 4.9 KM 2460248.3 |
 JV4611| CK7471 HIGH KNOB 2 RM 1                     13.090 METERS 25053     |
 JV4611| JV4613 CATOCTIN MTN RADIO WFMD FM MST      APPROX. 4.2 KM 3553256.7 |
 JV4611|---------------------------------------------------------------------|
 JV4611
 JV4611                          SUPERSEDED SURVEY CONTROL
 JV4611
 JV4611  NAD 83(2007)-  39 27 42.67481(N)    077 29 43.48681(W) AD(2002.00) 0
 JV4611  ELLIP H (02/10/07)  440.368  (m)                       GP(2002.00)    
 JV4611  ELLIP H (06/09/03)  440.369  (m)                       GP(       ) 4 2
 JV4611  NAD 83(1993)-  39 27 42.67461(N)    077 29 43.48661(W) AD(       ) 1
 JV4611  ELLIP H (02/09/93)  440.284  (m)                       GP(       ) 4 2
 JV4611  NAD 83(1991)-  39 27 42.67505(N)    077 29 43.48646(W) AD(       ) 1
 JV4611  NAD 83(1986)-  39 27 42.67524(N)    077 29 43.49605(W) AD(       ) 1
 JV4611  NAD 27      -  39 27 42.31100(N)    077 29 44.54300(W) AD(       ) 1
 JV4611  NGVD 29 (02/09/93)  473.5    (m)  UNKNOWN  model used  GPS OBS        
 JV4611
 JV4611.Superseded values are not recommended for survey control.
 JV4611
 JV4611.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4611.See file dsdata.pdf to determine how the superseded data were derived.
 JV4611
 JV4611_MARKER: DS = TRIANGULATION STATION DISK
 JV4611_SETTING: 66 = SET IN ROCK OUTCROP
 JV4611_STAMPING: HIGH KNOB 2 1939
 JV4611_MARK LOGO: CGS
 JV4611_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV4611_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV4611+STABILITY: POSITION/ELEVATION WELL
 JV4611_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4611+SATELLITE: SATELLITE OBSERVATIONS - August 27, 2015
 JV4611
 JV4611  HISTORY     - Date     Condition        Report By
 JV4611  HISTORY     - 1939     MONUMENTED       CGS
 JV4611  HISTORY     - 1939     GOOD             CGS
 JV4611  HISTORY     - 1942     GOOD             CGS
 JV4611  HISTORY     - 1958     GOOD             CGS
 JV4611  HISTORY     - 19920716 GOOD             NOS
 JV4611  HISTORY     - 20150827 GOOD             INDIV
 JV4611
 JV4611                          STATION DESCRIPTION
 JV4611
 JV4611'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4611'STATION IS IN GAMBRILL STATE PARK, ON THE S END OF A HIGH RIDGE
 JV4611'KNOWN AS HIGH KNOB IN THE CATOCTIN MOUNTAINS, AND IS IN THE
 JV4611'APPROXIMATE LOCATION OF STATION HIGH KNOB 1865.  MARK IS SET IN A
 JV4611'DRILL HOLE IN THE TOP OF A LARGE FLAT ROCK FLUSH WITH THE GROUND,
 JV4611'22 FT. S OF THE CENTERLINE OF THE ROAD, AND ABOUT 50 PACES NE OF
 JV4611'A LOG SHELTER ON THE SW SLOPE OF THE HILL.  DISK IS STAMPED HIGH
 JV4611'KNOB 2 1939.
 JV4611'
 JV4611'STATION, REFERENCE, AND AZIMUTH MARKS ARE STANDARD DISKS,
 JV4611'WEDGED IN DRILL HOLES IN BOULDERS.
 JV4611'
 JV4611'REFERENCE MARK 1 IS W BY S OF THE STATION, IN A LARGE BOULDER,
 JV4611'45 FT. S OF THE CENTERLINE OF THE ROAD, AND ABOUT 50 FT. N OF A
 JV4611'STONE FOUNTAIN.
 JV4611'
 JV4611'REFERENCE MARK 2 IS N OF THE STATION, ACROSS THE ROAD FROM IT,
 JV4611'SET IN THE TOP OF A LARGE FLAT ROCK, 21 FT. N OF THE CENTERLINE
 JV4611'OF THE ROAD, AND 12 FT. E OF A LARGE LOOSE BOULDER.
 JV4611'
 JV4611'AZIMUTH MARK IS ABOUT 0.6 MI. (AIRLINE) S OF THE STATION, 60
 JV4611'PACES SW OF A PAVED ROAD, SET IN A DRILL HOLE IN ROCK ON THE NW
 JV4611'EDGE OF A T-ROAD, 13 FT. SE OF A FENCE, AND 10 FT. E OF A
 JV4611'TRIANGULAR-BLAZED DOUBLE LOCUST TREE.
 JV4611'
 JV4611'HIGH KNOB 1865 WAS SEARCHED FOR AFTER MAKING AN INVERSE
 JV4611'COMPUTATION BUT WAS NOT FOUND.
 JV4611'
 JV4611'HEIGHT OF LIGHT ABOVE STATION MARK 18 METERS.
 JV4611
 JV4611                          STATION RECOVERY (1939)
 JV4611
 JV4611'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939
 JV4611'RECOVERED IN GOOD CONDITION.
 JV4611
 JV4611                          STATION RECOVERY (1942)
 JV4611
 JV4611'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (PLB)
 JV4611'STATION RECOVERED, AND ALL MARKS EXCEPT THE AZIMUTH MARK FOUND IN
 JV4611'GOOD CONDITION.  STATION IS IN GAMBRILL STATE PARK, ON THE S END OF
 JV4611'A HIGH RIDGE KNOWN AS HIGH KNOB IN THE CATOCTIN MOUNTAINS.  MARK
 JV4611'IS A STANDARD DISK, SET IN A LARGE FLAT ROCK FLUSH WITH THE
 JV4611'SURFACE OF THE GROUND.  IT IS 22 FT. S OF THE CENTER OF THE ROAD,
 JV4611'BETWEEN A STONE BATHHOUSE AND A STONE PARK LODGE WHICH IS BUILT
 JV4611'ON THE S SLOPE OF THE RIDGE.  MARK IS STAMPED HIGH KNOB 2 1939.
 JV4611'
 JV4611'REFERENCE MARK 1 IS W-SW OF THE STATION, ON THE S SIDE OF THE
 JV4611'ROAD, AND IN THE TOP OF A LARGE FLAT BOULDER.
 JV4611'
 JV4611'REFERENCE MARK 2 IS N OF THE STATION, ON THE N SIDE OF THE ROAD,
 JV4611'AND IN THE TOP OF A BOULDER.  BOTH MARKS ARE STANDARD DISKS,
 JV4611'STAMPED WITH THEIR RESPECTIVE NUMBER, AND THE NAME AND DATE OF
 JV4611'THE STATION.
 JV4611'
 JV4611'AZIMUTH MARK IS ABOUT 1.0 MI. BY AIRLINE S OF THE STATION, ON THE
 JV4611'N SLOPE OF THE HILL, 18 FT. W OF THE CENTER OF A PAVED COUNTY ROAD
 JV4611'LEADING TO THE STATE PARK, AND AT A POINT ABOUT 100 YD. S OF ROAD
 JV4611'FORKS.  MARK IS SET IN THE FENCE LINE.  IT IS A STANDARD DISK,
 JV4611'SET IN A SQUARE CONCRETE MONUMENT PROJECTING ABOUT 5 IN., AND
 JV4611'STAMPED HIGH KNOB 2 1942.
 JV4611'
 JV4611'TO REACH FROM THE INTERSECTION OF MARKET AND FOURTH STREETS IN
 JV4611'FREDERICK, GO W AND N ON FOURTH STREET FOR 1.25 MI. TO A PAVED
 JV4611'SIDE ROAD LEFT JUST AFTER PASSING A SMALL STONE SERVICE
 JV4611'STATION.  TURN LEFT ON THE PAVED ROAD AND FOLLOW IT STRAIGHT AHEAD
 JV4611'FOR 4.3 MI. TO THE AZIMUTH MARK ON THE LEFT SIDE OF THE ROAD,
 JV4611'CONTINUE STRAIGHT AHEAD FOR 0.15 MI. TO FORKS AND A SIGN
 JV4611'POINTING TO GAMBRILL STATE PARK, TURN RIGHT FOR 1.1 MI. TO A
 JV4611'T-ROAD LEFT AND A SIGN POINTING TO A PARK, TURN LEFT AND GO 0.3
 JV4611'MI. TO A PARK LODGE ON THE S END OF THE RIDGE AND STATION
 JV4611'SITE.  NEW ROADS ARE NOW BEING BUILT IN THIS VICINITY, BUT
 JV4611'ANYONE IN THE VICINITY CAN DIRECT ONE TO THE PARK.
 JV4611'
 JV4611'DISTANCES AND DIRECTIONS TO THE REFERENCE MARKS CHECKED THE
 JV4611'1939 DESCRIPTION.
 JV4611'
 JV4611'A 37-FT. TOWER WAS USED FOR OBSERVATIONS, BUT ALL OBJECTS TO
 JV4611'THE E, S, AND W WILL SEE FROM THE GROUND WITH A SMALL AMOUNT OF
 JV4611'CLEARING.
 JV4611
 JV4611                          STATION RECOVERY (1958)
 JV4611
 JV4611'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4611'STATION AND REFERENCE MARKS NO. 1 AND 2 RECOVERED AS DESCRIBED
 JV4611'AND FOUND IN GOOD CONDITION.  THE AZIMUTH MARK WAS NOT
 JV4611'RECOVERED.  HOWEVER THE DRILL HOLE THAT THE MARK WAS SET IN WAS
 JV4611'RECOVERED, BUT THE DISK IS GONE.  DUE TO HEAVY GROWTH OF TIMBER.
 JV4611'NO NEW AZIMUTH MARK WAS SET.  HOWEVER STATIONS GAMBRILL AND KLIPP
 JV4611'MAY BE USED AS AZIMUTH MARKS WITH CONSIDERABLE CLEARING.  A CHECK
 JV4611'WAS MADE OF THE DISTANCE AND DIRECTION TO THE MARKS AND A SLIGHT
 JV4611'DIFFERENCE FOUND IN THE DISTANCE TO REFERENCE MARK NO. 1
 JV4611'AND THE DIRECTION TO REFERENCE MARK NO. 2.  DUE TO CHANGES IN
 JV4611'ROADS AND LAND MARKS A NEW TO REACH DESCRIPTION FOLLOWS--
 JV4611'
 JV4611'TO REACH FROM THE POST OFFICE IN FREDERICK, GO W ON U.S. HWY 40
 JV4611'FOR 2.9 MILES TO JUNCTION OF ALT. U.S. HWY 40.  KEEP RIGHT AND
 JV4611'CONTINUE NORTHWESTERLY ON U.S. HWY 40 FOR 2.75 MILES TO SURFACED
 JV4611'T-ROAD RIGHT JUST PAST SIGN ON RIGHT GAMBRILL STATE PARK.  TURN
 JV4611'RIGHT AND GO NORTHERLY ON SURFACED ROAD FOR 0.55 MILE TO 5-POINT
 JV4611'INTERSECTION AT TOP OF RIDGE.  TURN LEFT AND GO SOUTHERLY
 JV4611'THROUGH PARK FOR 0.25 MILE TO SOUTH END OF CIRCULAR DRIVE AND
 JV4611'STATION IN BLACK TOP AT SOUTH EDGE OF ROAD.
 JV4611
 JV4611                          STATION RECOVERY (1992)
 JV4611
 JV4611'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JV4611'LOCATED IN GAMBRILL STATE PARK ON THE SOUTH END OF A HIGH RIDGE KNOWN
 JV4611'AS HIGH KNOB IN THE CATOCTIN MOUNTAINS.  TO REACH THE STATION FROM THE
 JV4611'U.S. POST OFFICE IN FREDERICK, GO WEST ON U.S. HWY 40 FOR 2.9 MI (4.67
 JV4611'KM) TO THE JUNCTION OF ALT U.S. HWY 40, KEEP RIGHT AND CONTINUE
 JV4611'NORTHWESTERLY ON U.S. HWY 40 FOR 2.75 MI (4.43 KM) TO A SURFACED T
 JV4611'ROAD RIGHT AT A SIGN FOR GAMBRILL STATE PARK, TURN RIGHT AND GO
 JV4611'NORTHERLY ON THE SURFACED ROAD FOR 0.55 MI (0.89 KM) TO THE TOP OF THE
 JV4611'RIDGE AT A T-INTERSECTION, TURN LEFT AND PROCEED SOUTHERLY THROUGH THE
 JV4611'PARK FOR 0.25 MI (0.40 KM) TO THE SOUTH END OF A CIRCULAR DRIVE AND
 JV4611'THE STATION IN THE BLACKTOP ALONG THE SOUTH EDGE OF THE PAVEMENT.  THE
 JV4611'STATION MARK IS A BRONZE DISK SET IN A DRILL HOLE IN AN OUTCROPPING OF
 JV4611'BEDROCK 0.2 FT (0.06 M) BELOW LEVEL OF THE PAVEMENT.  THE MARK IS
 JV4611'EASILY FOUND BY LOCATING A 0.3 M (0.98 FT) DIAMETER CONCRETE PATCH IN
 JV4611'THE PAVEMENT WHICH IS A THIN SHELL OF CONCRETE OVER A LAYER OF SAND
 JV4611'WHICH COVERS THE MARK.  IT IS BETWEEN A STONE LODGE AND A COMFORT
 JV4611'STATION ABOUT 22 FT (6.71 M) SOUTH OF THE CENTER OF THE CIRCULAR DRIVE
 JV4611'AND 42.95 FT (13.09 M) EAST-NORTHEAST OF REFERENCE MARK NO 1.
 JV4611'REFERENCE MARK NO 2 WAS SEARCHED FOR BUT IS BELIEVED TO HAVE BEEN
 JV4611'COVERED BY A BOULDER WHICH WAS MOVED DURING THE LAYING OF A WATER
 JV4611'LINE.  RECOVERY BY LUCKY JAMES LINDLY.
 JV4611
 JV4611                          STATION RECOVERY (2015)
 JV4611
 JV4611'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2015 (RL)
 JV4611'PREVIOUS DESCRIPTION IS ADEQUATE WITH FOLLOWING DIFFERENCE. THE MARK
 JV4611'IS UNDER A METAL COVER STAMPED WATER EMBEDDED IN PAVEMENT. RECOVERED
 JV4611'BY GAMBRILL SEASONAL PARK RANGER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5763 ***********************************************************************
 JV5763  DESIGNATION -  HIGH RM
 JV5763  PID         -  JV5763
 JV5763  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5763  COUNTRY     -  US
 JV5763  USGS QUAD   -  ROUND BAY (2016)
 JV5763
 JV5763                         *CURRENT SURVEY CONTROL
 JV5763  ______________________________________________________________________
 JV5763* NAD 83(1991) POSITION- 39 03 34.27183(N) 076 32 45.70575(W)   ADJUSTED
 JV5763* NAVD 88 ORTHO HEIGHT -     9.    (meters)       30.    (feet) SCALED
 JV5763  ______________________________________________________________________
 JV5763  GEOID HEIGHT    -        -33.110 (meters)                     GEOID18
 JV5763  LAPLACE CORR    -         -4.32  (seconds)                    DEFLEC18
 JV5763  HORZ ORDER      -  THIRD
 JV5763
 JV5763.The horizontal coordinates were established by classical geodetic methods
 JV5763.and adjusted by the National Geodetic Survey in January 1992.
 JV5763
 JV5763.The orthometric height was scaled from a topographic map.
 JV5763
 JV5763.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5763.GEOID18 height accuracy estimate available here.
 JV5763
 JV5763.Click photographs - Photos may exist for this station.
 JV5763
 JV5763.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5763
 JV5763. The following values were computed from the NAD 83(1991) position.
 JV5763
 JV5763;                    North         East     Units Scale Factor Converg.
 JV5763;SPC MD       -   154,711.266   439,290.943   MT  0.99995497   +0 17 05.7
 JV5763;SPC MD       -   507,581.88  1,441,240.37   sFT  0.99995497   +0 17 05.7
 JV5763;UTM  18      - 4,324,518.957   366,235.458   MT  0.99982032   -0 58 27.6
 JV5763
 JV5763!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5763!SPC MD       -   1.00000382  x   0.99995497  =   0.99995879
 JV5763!UTM  18      -   1.00000382  x   0.99982032  =   0.99982414
 JV5763
 JV5763_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6623524518(NAD 83)
 JV5763
 JV5763                          SUPERSEDED SURVEY CONTROL
 JV5763
 JV5763  NAD 83(1986)-  39 03 34.26853(N)    076 32 45.71605(W) AD(       ) 3
 JV5763  NAD 27      -  39 03 33.87200(N)    076 32 46.84500(W) AD(       ) 3
 JV5763
 JV5763.Superseded values are not recommended for survey control.
 JV5763
 JV5763.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5763.See file dsdata.pdf to determine how the superseded data were derived.
 JV5763
 JV5763_MARKER: U = CONCRETE POST
 JV5763_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 JV5763_SP_SET: OBJECT IMBEDDED IN GROUND
 JV5763_STAMPING: M.S.F.C.  U.S.C.S.
 JV5763_MARK LOGO: MDSFC
 JV5763_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5763
 JV5763  HISTORY     - Date     Condition        Report By
 JV5763  HISTORY     - 1903     MONUMENTED       MDSFC
 JV5763
 JV5763                          STATION DESCRIPTION
 JV5763
 JV5763'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1903
 JV5763'ON THE NE SHORE OF ROUND BAY IN SEVERN RIVER, ON EAGLENEST POINT,
 JV5763'ON GROUND OCCUPIED BY THE ROUND BAY RESORT.  STATION IS
 JV5763'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL
 JV5763'FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5763'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5763'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0506 ***********************************************************************
 HV0506  DESIGNATION -  HIGH RM 1
 HV0506  PID         -  HV0506
 HV0506  STATE/COUNTY-  MD/DORCHESTER
 HV0506  COUNTRY     -  US
 HV0506  USGS QUAD   -  WINGATE (2016)
 HV0506
 HV0506                         *CURRENT SURVEY CONTROL
 HV0506  ______________________________________________________________________
 HV0506* NAD 83(1986) POSITION- 38 18 41.18   (N) 076 00 39.99   (W)   HD_HELD1
 HV0506* NAVD 88 ORTHO HEIGHT -     4.175 (meters)       13.70  (feet) ADJUSTED
 HV0506  ______________________________________________________________________
 HV0506  GEOID HEIGHT    -        -35.494 (meters)                     GEOID18
 HV0506  DYNAMIC HEIGHT  -          4.173 (meters)       13.69  (feet) COMP
 HV0506  MODELED GRAVITY -    980,001.5   (mgal)                       NAVD 88
 HV0506
 HV0506  VERT ORDER      -  SECOND    CLASS 0
 HV0506
 HV0506.The horizontal coordinates were determined by differentially corrected
 HV0506.hand held GPS observations or other comparable positioning techniques
 HV0506.and have an estimated accuracy of +/- 3 meters.
 HV0506
 HV0506.The orthometric height was determined by differential leveling and
 HV0506.adjusted by the NATIONAL GEODETIC SURVEY
 HV0506.in June 1991.
 HV0506
 HV0506.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0506.GEOID18 height accuracy estimate available here.
 HV0506
 HV0506.Click photographs - Photos may exist for this station.
 HV0506
 HV0506.The dynamic height is computed by dividing the NAVD 88
 HV0506.geopotential number by the normal gravity value computed on the
 HV0506.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0506.degrees latitude (g = 980.6199 gals.).
 HV0506
 HV0506.The modeled gravity was interpolated from observed gravity values.
 HV0506
 HV0506;                    North         East    Units  Estimated Accuracy
 HV0506;SPC MD       -    72,041.0     486,486.3     MT  (+/- 3 meters HH1 GPS) 
 HV0506
 HV0506_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1160340854(NAD 83)
 HV0506
 HV0506                          SUPERSEDED SURVEY CONTROL
 HV0506
 HV0506  NGVD 29 (11/26/84)    4.415  (m)           14.48   (f) ADJUSTED    2 0
 HV0506
 HV0506.Superseded values are not recommended for survey control.
 HV0506
 HV0506.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0506.See file dsdata.pdf to determine how the superseded data were derived.
 HV0506
 HV0506_MARKER: DR = REFERENCE MARK DISK
 HV0506_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0506_STAMPING: HIGH NO 1 1910 1931
 HV0506_MARK LOGO: CGS
 HV0506_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0506+STABILITY: SURFACE MOTION
 HV0506
 HV0506  HISTORY     - Date     Condition        Report By
 HV0506  HISTORY     - 1931     MONUMENTED       CGS
 HV0506  HISTORY     - 1964     MARK NOT FOUND   CGS
 HV0506
 HV0506                          STATION DESCRIPTION
 HV0506
 HV0506'DESCRIBED BY COAST AND GEODETIC SURVEY 1931
 HV0506'AT ELLIOTT.
 HV0506'THIS MARK IS AT ELLIOTT, DORCHESTER COUNTY, 33.6 FEET SOUTH OF
 HV0506'THE STATION, BETWEEN THE STATION AND REFERENCE MARK NUMBER 2, AND
 HV0506'IS A STANDARD REFERENCE DISK SET IN THE TOP OF A CONCRETE POST
 HV0506'ABOUT 1 INCH LOWER THAN THE SURFACE OF THE GROUND.
 HV0506
 HV0506                          STATION RECOVERY (1964)
 HV0506
 HV0506'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HV0506'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0507 ***********************************************************************
 HV0507  DESIGNATION -  HIGH RM 2
 HV0507  PID         -  HV0507
 HV0507  STATE/COUNTY-  MD/DORCHESTER
 HV0507  COUNTRY     -  US
 HV0507  USGS QUAD   -  WINGATE (2016)
 HV0507
 HV0507                         *CURRENT SURVEY CONTROL
 HV0507  ______________________________________________________________________
 HV0507* NAD 83(1986) POSITION- 38 18 41.30   (N) 076 00 39.98   (W)   HD_HELD1
 HV0507* NAVD 88 ORTHO HEIGHT -     4.313 (meters)       14.15  (feet) ADJUSTED
 HV0507  ______________________________________________________________________
 HV0507  GEOID HEIGHT    -        -35.494 (meters)                     GEOID18
 HV0507  DYNAMIC HEIGHT  -          4.310 (meters)       14.14  (feet) COMP
 HV0507  MODELED GRAVITY -    980,001.5   (mgal)                       NAVD 88
 HV0507
 HV0507  VERT ORDER      -  SECOND    CLASS 0
 HV0507
 HV0507.The horizontal coordinates were determined by differentially corrected
 HV0507.hand held GPS observations or other comparable positioning techniques
 HV0507.and have an estimated accuracy of +/- 3 meters.
 HV0507
 HV0507.The orthometric height was determined by differential leveling and
 HV0507.adjusted by the NATIONAL GEODETIC SURVEY
 HV0507.in June 1991.
 HV0507
 HV0507.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0507.GEOID18 height accuracy estimate available here.
 HV0507
 HV0507.Click photographs - Photos may exist for this station.
 HV0507
 HV0507.The dynamic height is computed by dividing the NAVD 88
 HV0507.geopotential number by the normal gravity value computed on the
 HV0507.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0507.degrees latitude (g = 980.6199 gals.).
 HV0507
 HV0507.The modeled gravity was interpolated from observed gravity values.
 HV0507
 HV0507;                    North         East    Units  Estimated Accuracy
 HV0507;SPC MD       -    72,044.7     486,486.5     MT  (+/- 3 meters HH1 GPS) 
 HV0507
 HV0507_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1160340857(NAD 83)
 HV0507
 HV0507                          SUPERSEDED SURVEY CONTROL
 HV0507
 HV0507  NGVD 29 (11/26/84)    4.552  (m)           14.93   (f) ADJUSTED    2 0
 HV0507
 HV0507.Superseded values are not recommended for survey control.
 HV0507
 HV0507.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0507.See file dsdata.pdf to determine how the superseded data were derived.
 HV0507
 HV0507_MARKER: DR = REFERENCE MARK DISK
 HV0507_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0507_STAMPING: HIGH NO 2 1910 1931
 HV0507_MARK LOGO: CGS
 HV0507_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0507+STABILITY: SURFACE MOTION
 HV0507
 HV0507  HISTORY     - Date     Condition        Report By
 HV0507  HISTORY     - 1931     MONUMENTED       CGS
 HV0507  HISTORY     - 1964     MARK NOT FOUND   CGS
 HV0507
 HV0507                          STATION DESCRIPTION
 HV0507
 HV0507'DESCRIBED BY COAST AND GEODETIC SURVEY 1931
 HV0507'AT ELLIOTT.
 HV0507'THIS MARK IS AT ELLIOTT, DORCHESTER COUNTY, 46 FEET SOUTH OF THE
 HV0507'STATION IN LINE WITH THE STATION AND REFERENCE MARK NUMBER 1, AND
 HV0507'IS A STANDARD REFERENCE DISK IN THE TOP OF A CONCRETE POST AND
 HV0507'PROJECTS ABOUT 3 INCHES.
 HV0507
 HV0507                          STATION RECOVERY (1964)
 HV0507
 HV0507'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HV0507'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0505 ***********************************************************************
 HV0505  DESIGNATION -  HIGH RM 3
 HV0505  PID         -  HV0505
 HV0505  STATE/COUNTY-  MD/DORCHESTER
 HV0505  COUNTRY     -  US
 HV0505  USGS QUAD   -  WINGATE (2016)
 HV0505
 HV0505                         *CURRENT SURVEY CONTROL
 HV0505  ______________________________________________________________________
 HV0505* NAD 83(1986) POSITION- 38 18 34.     (N) 076 00 36.     (W)   SCALED
 HV0505* NAVD 88 ORTHO HEIGHT -     3.444 (meters)       11.30  (feet) ADJUSTED
 HV0505  ______________________________________________________________________
 HV0505  GEOID HEIGHT    -        -35.498 (meters)                     GEOID18
 HV0505  DYNAMIC HEIGHT  -          3.441 (meters)       11.29  (feet) COMP
 HV0505  MODELED GRAVITY -    980,001.4   (mgal)                       NAVD 88
 HV0505
 HV0505  VERT ORDER      -  SECOND    CLASS 0
 HV0505
 HV0505.The horizontal coordinates were scaled from a map and have
 HV0505.an estimated accuracy of +/- 6 seconds.
 HV0505
 HV0505.The orthometric height was determined by differential leveling and
 HV0505.adjusted by the NATIONAL GEODETIC SURVEY
 HV0505.in June 1991.
 HV0505
 HV0505.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0505.GEOID18 height accuracy estimate available here.
 HV0505
 HV0505.Click photographs - Photos may exist for this station.
 HV0505
 HV0505.The dynamic height is computed by dividing the NAVD 88
 HV0505.geopotential number by the normal gravity value computed on the
 HV0505.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0505.degrees latitude (g = 980.6199 gals.).
 HV0505
 HV0505.The modeled gravity was interpolated from observed gravity values.
 HV0505
 HV0505;                    North         East    Units  Estimated Accuracy
 HV0505;SPC MD       -    71,820.      486,590.      MT  (+/- 180 meters Scaled)
 HV0505
 HV0505_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH116406(NAD 83)
 HV0505
 HV0505                          SUPERSEDED SURVEY CONTROL
 HV0505
 HV0505  NGVD 29 (11/26/84)    3.683  (m)           12.08   (f) ADJUSTED    2 0
 HV0505
 HV0505.Superseded values are not recommended for survey control.
 HV0505
 HV0505.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0505.See file dsdata.pdf to determine how the superseded data were derived.
 HV0505
 HV0505_MARKER: DR = REFERENCE MARK DISK
 HV0505_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0505_STAMPING: HIGH NO 3 1910 1934
 HV0505_MARK LOGO: CGS
 HV0505_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0505+STABILITY: SURFACE MOTION
 HV0505_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0505+SATELLITE: SATELLITE OBSERVATIONS - March 01, 2008
 HV0505
 HV0505  HISTORY     - Date     Condition        Report By
 HV0505  HISTORY     - 1934     MONUMENTED       CGS
 HV0505  HISTORY     - 1964     MARK NOT FOUND   CGS
 HV0505  HISTORY     - 1981     GOOD             LOCSUR
 HV0505  HISTORY     - 20080301 GOOD             INDIV
 HV0505
 HV0505                          STATION DESCRIPTION
 HV0505
 HV0505'DESCRIBED BY COAST AND GEODETIC SURVEY 1934
 HV0505'AT ELLIOTT.
 HV0505'THIS MARK IS AT ELLIOTT, DORCHESTER COUNTY, NEAR THE WEST END OF
 HV0505'THE ISLAND, AT A DIRT ROAD LEADING NORTH TO A YELLOW HOUSE, 100
 HV0505'FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE 2-STORY WHITE
 HV0505'HOUSE, AT THE SOUTHEAST CORNER OF A WIRE FENCE, AND IS A STANDARD
 HV0505'REFERENCE MARK SET IN THE TOP OF A CONCRETE POST.
 HV0505
 HV0505                          STATION RECOVERY (1964)
 HV0505
 HV0505'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 HV0505'MARK NOT FOUND.
 HV0505
 HV0505                          STATION RECOVERY (1981)
 HV0505
 HV0505'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1981
 HV0505'RECOVERED IN GOOD CONDITION.
 HV0505
 HV0505                          STATION RECOVERY (2008)
 HV0505
 HV0505'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2008 (SWW)
 HV0505'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5849 ***********************************************************************
 HV5849  DESIGNATION -  HIGHER
 HV5849  PID         -  HV5849
 HV5849  STATE/COUNTY-  MD/TALBOT
 HV5849  COUNTRY     -  US
 HV5849  USGS QUAD   -  TRAPPE (2016)
 HV5849
 HV5849                         *CURRENT SURVEY CONTROL
 HV5849  ______________________________________________________________________
 HV5849* NAD 83(1991) POSITION- 38 42 56.17173(N) 076 06 40.30014(W)   ADJUSTED
 HV5849* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5849  ______________________________________________________________________
 HV5849  GEOID HEIGHT    -        -34.712 (meters)                     GEOID18
 HV5849  LAPLACE CORR    -         -3.43  (seconds)                    DEFLEC18
 HV5849  HORZ ORDER      -  THIRD
 HV5849
 HV5849.The horizontal coordinates were established by classical geodetic methods
 HV5849.and adjusted by the National Geodetic Survey in January 1992.
 HV5849
 HV5849.The orthometric height was scaled from a topographic map.
 HV5849
 HV5849.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5849.GEOID18 height accuracy estimate available here.
 HV5849
 HV5849.Click photographs - Photos may exist for this station.
 HV5849
 HV5849.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5849
 HV5849. The following values were computed from the NAD 83(1991) position.
 HV5849
 HV5849;                    North         East     Units Scale Factor Converg.
 HV5849;SPC MD       -   116,812.379   477,296.497   MT  0.99995374   +0 33 28.2
 HV5849;SPC MD       -   383,241.95  1,565,930.26   sFT  0.99995374   +0 33 28.2
 HV5849;UTM  18      - 4,285,803.500   403,394.391   MT  0.99971492   -0 41 42.2
 HV5849
 HV5849!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5849!SPC MD       -   1.00000517  x   0.99995374  =   0.99995891
 HV5849!UTM  18      -   1.00000517  x   0.99971492  =   0.99972009
 HV5849
 HV5849:                Primary Azimuth Mark                     Grid Az
 HV5849:SPC MD       -  ALL                                      159 10 08.1
 HV5849:UTM  18      -  ALL                                      160 25 18.5
 HV5849
 HV5849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0339485803(NAD 83)
 HV5849
 HV5849|---------------------------------------------------------------------|
 HV5849| PID    Reference Object                     Distance      Geod. Az  |
 HV5849|                                                           dddmmss.s |
 HV5849| HV5846 ALL                                 463.546 METERS 1594336.3 |
 HV5849| HV5828 PLOW                                400.769 METERS 2591447.1 |
 HV5849|---------------------------------------------------------------------|
 HV5849
 HV5849                          SUPERSEDED SURVEY CONTROL
 HV5849
 HV5849  NAD 83(1986)-  38 42 56.16800(N)    076 06 40.31628(W) AD(       ) 3
 HV5849  NAD 27      -  38 42 55.72900(N)    076 06 41.55600(W) AD(       ) 3
 HV5849  USSD        -  38 42 56.12800(N)    076 06 41.34800(W) AD(       ) 3
 HV5849
 HV5849.Superseded values are not recommended for survey control.
 HV5849
 HV5849.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5849.See file dsdata.pdf to determine how the superseded data were derived.
 HV5849
 HV5849_MARKER: H = DRILL HOLE
 HV5849_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5849_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5849
 HV5849  HISTORY     - Date     Condition        Report By
 HV5849  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5849  HISTORY     - 1940     GOOD             CGS
 HV5849  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5849
 HV5849                          STATION DESCRIPTION
 HV5849
 HV5849'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5849'ON THE NORTHERN SHORE OF TRIPPE CREEK, AT E SIDE OF ENTRANCE TO A
 HV5849'COVE, ABOUT 1-3/4 MILES FROM WHERE TRIPPE CREEK ENTERS TRED AVON
 HV5849'RIVER, IN CULTIVATED LAND, ABOUT 8 FEET ABOVE HIGH WATER, 30
 HV5849'YARDS NE OF EDGE OF BANK, 35 YARDS SE BY E OF ROW OF TREES, 50
 HV5849'YARDS ESE OF POINT OF BANK AND TREES.  STATION IS MARKED BY A
 HV5849'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5849'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV5849'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5849'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE
 HV5849'CENTER OF A 2-INCH BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF
 HV5849'THE MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV5849'REFERENCE ARE AS FOLLOWS--NEAR PEAK OF LARGE BARN, 5/8 MILE, S 24
 HV5849'DEG 48 MIN W.  LEFT CORNER OF LARGE CHIMNEY, 5/8 MILE, S 35 DEG 15
 HV5849'MIN W.  NAIL IN BLAZE IN 3-INCH SASSAFRAS TREE, 31.63 METERS
 HV5849'(103.8 FEET), N 61 DEG 57 MIN W.  NAIL IN BLAZE IN 5-INCH LOCUST
 HV5849'TREE, 31.96 METERS (104.9 FEET), N 57 DEG 55 MIN W. SPINDLE ON
 HV5849'LEFT ONE OF FOUR BARN CUPOLAS, 3/8 MILE, N 44 DEG 57 MIN W.  NAIL
 HV5849'IN BLAZE IN 5-INCH LOCUST TREE, 30.93 METERS (101.5 FEET), N 26
 HV5849'DEG 44 MIN W.  SPINDLE ON CUPOLA, 1 MILE, N 88 DEG 9 MIN E.  NEAR
 HV5849'PEAK OF HOUSE, 3/4 MILE, S 10 DEG 31 MIN E.
 HV5849
 HV5849                          STATION RECOVERY (1940)
 HV5849
 HV5849'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5849'STATION MARK RECOVERED.  TOP BROKEN AROUND EDGES, 4 INCHES ABOVE
 HV5849'SURFACE OF GROUND.  ALL OTHER TREES EXCEPT THOSE MENTIONED BELOW
 HV5849'HAVE BEEN DESTROYED.
 HV5849'
 HV5849'STATION IS ON THE NORTHERN SHORE OF TRIPPE CREEK, AT E SIDE OF
 HV5849'ENTRANCE TO A COVE, 1-3/4 MILES FROM WHERE TRIPPE CREEK ENTERS
 HV5849'TRED AVON RIVER, IN CULTIVATED LAND, 8 FEET ABOVE HIGH WATER, 16.0
 HV5849'METERS E OF EDGE OF BANK, 28.5 METERS SE FROM EDGE OF BANK, 22.5
 HV5849'METERS NE FROM EDGE OF BANK AND 30.0 METERS ESE OF POINT OF BANK
 HV5849'AND TREES.
 HV5849'
 HV5849'BEARING AND DISTANCE TO AN 8-INCH LOCUST TREE IS AS FOLLOWS--N 26
 HV5849'DEG 44 MIN W, 30.8 METERS (THIS TREE MENTIONED IN DESCRIPTION IS A
 HV5849'5-INCH LOCUST.) LAND IS GROWN WITH WEEDS, CULTIVATED BUSH, CEDAR
 HV5849'AND FRUIT TREES, ALSO 35 YARDS SE BY E OF ROW OF TREES.
 HV5849
 HV5849                          STATION RECOVERY (1961)
 HV5849
 HV5849'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5849'STATION NOT RECOVERED AFTER A THOROUGH SEARCH ALTHOUGH IT IS
 HV5849'BELIEVED TO BE STILL IN PLACE.  THE AREA IS NOW COVERED BY A HEAVY
 HV5849'GROWTH OF TIMBER, HEAVY UNDERBRUSH AND FALLEN TREES COVER THE
 HV5849'AREA TO SUCH AN EXTENT THAT EXTENSIVE CLEANING WILL BE NECESSARY
 HV5849'FOR RECOVERY OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6773 ***********************************************************************
 JV6773  DESIGNATION -  HIGHPOINT
 JV6773  PID         -  JV6773
 JV6773  STATE/COUNTY-  MD/HARFORD
 JV6773  COUNTRY     -  US
 JV6773  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6773
 JV6773                         *CURRENT SURVEY CONTROL
 JV6773  ______________________________________________________________________
 JV6773* NAD 83(2011) POSITION- 39 33 22.25912(N) 076 25 31.25399(W)   ADJUSTED
 JV6773* NAD 83(2011) ELLIP HT-   127.922 (meters)        (06/27/12)   ADJUSTED
 JV6773* NAD 83(2011) EPOCH   -  2010.00
 JV6773* NAVD 88 ORTHO HEIGHT -   160.6   (meters)      527.    (feet) VERTCON3
 JV6773  ______________________________________________________________________
 JV6773  GEOID HEIGHT    -        -32.634 (meters)                     GEOID18
 JV6773  NAD 83(2011) X  -  1,155,800.798 (meters)                     COMP
 JV6773  NAD 83(2011) Y  - -4,786,772.856 (meters)                     COMP
 JV6773  NAD 83(2011) Z  -  4,040,196.247 (meters)                     COMP
 JV6773  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 JV6773
 JV6773  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6773  Standards:
 JV6773         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6773            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6773  -------------------------------------------------------------------
 JV6773  NETWORK    1.26   3.39           0.55   0.45   1.73      0.36994789
 JV6773  -------------------------------------------------------------------
 JV6773  Click here for local accuracies and other accuracy information.
 JV6773
 JV6773.The horizontal coordinates were established by GPS observations
 JV6773.and adjusted by the National Geodetic Survey in June 2012.
 JV6773
 JV6773.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6773.been affixed to the stable North American tectonic plate. See 
 JV6773.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6773
 JV6773.The horizontal coordinates are valid at the epoch date displayed above
 JV6773.which is a decimal equivalence of Year/Month/Day.
 JV6773
 JV6773.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6773.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6773
 JV6773.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6773.GEOID18 height accuracy estimate available here.
 JV6773
 JV6773.Click photographs - Photos may exist for this station.
 JV6773
 JV6773.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6773
 JV6773.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6773
 JV6773.The ellipsoidal height was determined by GPS observations
 JV6773.and is referenced to NAD 83.
 JV6773
 JV6773. The following values were computed from the NAD 83(2011) position.
 JV6773
 JV6773;                    North         East     Units Scale Factor Converg.
 JV6773;SPC MD       -   209,908.210   449,388.613   MT  1.00002030   +0 21 38.4
 JV6773;SPC MD       -   688,673.85  1,474,369.14   sFT  1.00002030   +0 21 38.4
 JV6773;UTM  18      - 4,379,469.873   377,546.265   MT  0.99978462   -0 54 28.2
 JV6773
 JV6773!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6773!SPC MD       -   0.99997993  x   1.00002030  =   1.00000023
 JV6773!UTM  18      -   0.99997993  x   0.99978462  =   0.99976456
 JV6773
 JV6773_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7754679469(NAD 83)
 JV6773
 JV6773|---------------------------------------------------------------------|
 JV6773| PID    Reference Object                     Distance      Geod. Az  |
 JV6773|                                                           dddmmss.s |
 JV6773| JV6774 HIGHPOINT AZ MK                     314.407 METERS 15350     |
 JV6773|---------------------------------------------------------------------|
 JV6773
 JV6773                          SUPERSEDED SURVEY CONTROL
 JV6773
 JV6773  NAD 83(2007)-  39 33 22.25932(N)    076 25 31.25476(W) AD(2002.00) 0
 JV6773  ELLIP H (02/10/07)  127.940  (m)                       GP(2002.00)    
 JV6773  ELLIP H (09/18/02)  127.958  (m)                       GP(       ) 4 2
 JV6773  NAD 83(1991)-  39 33 22.25950(N)    076 25 31.25367(W) AD(       ) 1
 JV6773  ELLIP H (01/27/92)  127.928  (m)                       GP(       ) 4 1
 JV6773  NAD 83(1986)-  39 33 22.25277(N)    076 25 31.26093(W) AD(       ) 1
 JV6773  NGVD 29 (06/18/91)  160.8    (m)  UNKNOWN  model used  GPS OBS        
 JV6773
 JV6773.Superseded values are not recommended for survey control.
 JV6773
 JV6773.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6773.See file dsdata.pdf to determine how the superseded data were derived.
 JV6773
 JV6773_MARKER: DD = SURVEY DISK
 JV6773_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6773_STAMPING: 54 HIGHPOINT 1989
 JV6773_MARK LOGO: MD-025
 JV6773_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6773_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6773+STABILITY: SURFACE MOTION
 JV6773_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6773+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2001
 JV6773
 JV6773  HISTORY     - Date     Condition        Report By
 JV6773  HISTORY     - 1989     MONUMENTED       RDA
 JV6773  HISTORY     - 20010217 GOOD             USPSQD
 JV6773
 JV6773                          STATION DESCRIPTION
 JV6773
 JV6773'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6773'THE STATION IS LOCATED IN WEST CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6773'3 MILES WEST OF BEL AIR.
 JV6773'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 23 AND
 JV6773'STATE HIGHWAY 24 PROCEED WEST ALONG HIGHWAY 23 1.88 MILES TO ITS
 JV6773'INTERSECTION WITH HIGH POINT ROAD.  TURN LEFT AND PROCEED SOUTH ALONG
 JV6773'HIGH POINT ROAD 1.7 MILES TO WHERE HIGH POINT ROAD CHANGES TO
 JV6773'PLEASANTVILLE ROAD.  CONTINUE ALONG PLEASANTVILLE ROAD 0.2 MILES TO
 JV6773'CAMPBELL ROAD AND THE STATION ON THE LEFT.
 JV6773'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6773'ABOUT 1 INCH BELOW GROUND STAMPED 54 HIGHPOINT 1989.  THE STATION IS
 JV6773'32.8 FEET SOUTHEAST OF THE CENTERLINE OF PLEASANTVILLE ROAD, 17.4 FEET
 JV6773'NORTHEAST OF THE CENTERLINE OF CAMPBELL ROAD, AND 49.3 FEET WEST OF A
 JV6773'10 INCH MAPLE TREE.
 JV6773
 JV6773                          STATION RECOVERY (2001)
 JV6773
 JV6773'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV6773'CHANGE LAST SECTION OF DESCRIPTION TO - THE STATION IS A STANDARD
 JV6773'HARFORD COUNTY STATION DISK SET IN CONCRETE FLUSH WITH THE GROUND
 JV6773'STAMPED 54 HIGHPOINT 1989.  THE STATION IS 32.8 FEET SOUTHEAST OF THE
 JV6773'CENTERLINE OF PLEASANTVILLE ROAD, 17.4 FEET NORTHEAST OF THE
 JV6773'CENTERLINE OF CAMPBELL ROAD, AND 49.3 FEET WEST OF A 60' MAPLE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6774 ***********************************************************************
 JV6774  DESIGNATION -  HIGHPOINT AZ MK
 JV6774  PID         -  JV6774
 JV6774  STATE/COUNTY-  MD/HARFORD
 JV6774  COUNTRY     -  US
 JV6774  USGS QUAD   -  JARRETTSVILLE (2016)
 JV6774
 JV6774                         *CURRENT SURVEY CONTROL
 JV6774  ______________________________________________________________________
 JV6774* NAD 83(2011) POSITION- 39 33 13.10873(N) 076 25 25.44797(W)   ADJUSTED
 JV6774* NAD 83(2011) ELLIP HT-   125.562 (meters)        (06/27/12)   ADJUSTED
 JV6774* NAD 83(2011) EPOCH   -  2010.00
 JV6774* NAVD 88 ORTHO HEIGHT -   158.2   (meters)      519.    (feet) VERTCON3
 JV6774  ______________________________________________________________________
 JV6774  GEOID HEIGHT    -        -32.639 (meters)                     GEOID18
 JV6774  NAD 83(2011) X  -  1,155,977.297 (meters)                     COMP
 JV6774  NAD 83(2011) Y  - -4,786,913.245 (meters)                     COMP
 JV6774  NAD 83(2011) Z  -  4,039,977.157 (meters)                     COMP
 JV6774  LAPLACE CORR    -         -2.46  (seconds)                    DEFLEC18
 JV6774
 JV6774  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6774  Standards:
 JV6774         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6774            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6774  -------------------------------------------------------------------
 JV6774  NETWORK    1.34   3.82           0.57   0.50   1.95      0.39507670
 JV6774  -------------------------------------------------------------------
 JV6774  Click here for local accuracies and other accuracy information.
 JV6774
 JV6774.The horizontal coordinates were established by GPS observations
 JV6774.and adjusted by the National Geodetic Survey in June 2012.
 JV6774
 JV6774.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6774.been affixed to the stable North American tectonic plate. See 
 JV6774.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6774
 JV6774.The horizontal coordinates are valid at the epoch date displayed above
 JV6774.which is a decimal equivalence of Year/Month/Day.
 JV6774
 JV6774.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6774.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6774
 JV6774.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6774.GEOID18 height accuracy estimate available here.
 JV6774
 JV6774.Click photographs - Photos may exist for this station.
 JV6774
 JV6774.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6774
 JV6774.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6774
 JV6774.The ellipsoidal height was determined by GPS observations
 JV6774.and is referenced to NAD 83.
 JV6774
 JV6774. The following values were computed from the NAD 83(2011) position.
 JV6774
 JV6774;                    North         East     Units Scale Factor Converg.
 JV6774;SPC MD       -   209,626.881   449,529.004   MT  1.00001977   +0 21 42.1
 JV6774;SPC MD       -   687,750.86  1,474,829.74   sFT  1.00001977   +0 21 42.1
 JV6774;UTM  18      - 4,379,185.571   377,680.362   MT  0.99978421   -0 54 24.3
 JV6774
 JV6774!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6774!SPC MD       -   0.99998030  x   1.00001977  =   1.00000007
 JV6774!UTM  18      -   0.99998030  x   0.99978421  =   0.99976452
 JV6774
 JV6774_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7768079185(NAD 83)
 JV6774
 JV6774|---------------------------------------------------------------------|
 JV6774| PID    Reference Object                     Distance      Geod. Az  |
 JV6774|                                                           dddmmss.s |
 JV6774| JV6773 HIGHPOINT                           314.407 METERS 33350     |
 JV6774|---------------------------------------------------------------------|
 JV6774
 JV6774                          SUPERSEDED SURVEY CONTROL
 JV6774
 JV6774  NAD 83(2007)-  39 33 13.10894(N)    076 25 25.44873(W) AD(2002.00) 0
 JV6774  ELLIP H (02/10/07)  125.580  (m)                       GP(2002.00)    
 JV6774  ELLIP H (09/18/02)  125.599  (m)                       GP(       ) 4 2
 JV6774  NAD 83(1991)-  39 33 13.10912(N)    076 25 25.44766(W) AD(       ) 1
 JV6774  ELLIP H (01/27/92)  125.569  (m)                       GP(       ) 4 1
 JV6774  NAD 83(1986)-  39 33 13.10238(N)    076 25 25.45489(W) AD(       ) 1
 JV6774  NGVD 29 (06/18/91)  158.4    (m)  UNKNOWN  model used  GPS OBS        
 JV6774
 JV6774.Superseded values are not recommended for survey control.
 JV6774
 JV6774.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6774.See file dsdata.pdf to determine how the superseded data were derived.
 JV6774
 JV6774_MARKER: DZ = AZIMUTH MARK DISK
 JV6774_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6774_STAMPING: 54 HIGHPOINT 1989
 JV6774_MARK LOGO: MD-025
 JV6774_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6774_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6774+STABILITY: SURFACE MOTION
 JV6774_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6774+SATELLITE: SATELLITE OBSERVATIONS - February 17, 2001
 JV6774
 JV6774  HISTORY     - Date     Condition        Report By
 JV6774  HISTORY     - 1989     MONUMENTED       RDA
 JV6774  HISTORY     - 20010217 GOOD             USPSQD
 JV6774
 JV6774                          STATION DESCRIPTION
 JV6774
 JV6774'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6774'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTH ALONG
 JV6774'CAMPBELL ROAD 0.2 MILES TO THE AZIMUTH MARK ON THE LEFT.
 JV6774'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6774'ABOUT 1 INCH BELOW GROUND STAMPED 54 HIGHPOINT 1989.  THE MARK IS 27.6
 JV6774'FEET SOUTHWEST OF A WELL, 27.6 FEET SOUTH OF THE SOUTH CORNER OF
 JV6774'ELECTRIC TRANSFORMER NUMBER 10009A, 15.0 FEET NORTHEAST OF THE
 JV6774'CENTERLINE OF CAMPBELL ROAD, AND 1031.54 FEET FROM THE STATION.
 JV6774
 JV6774                          STATION RECOVERY (2001)
 JV6774
 JV6774'RECOVERY NOTE BY US POWER SQUADRON 2001 (RG)
 JV6774'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1236 ***********************************************************************
 HU1236  DESIGNATION -  HIGHS
 HU1236  PID         -  HU1236
 HU1236  STATE/COUNTY-  MD/WICOMICO
 HU1236  COUNTRY     -  US
 HU1236  USGS QUAD   -  SALISBURY (2016)
 HU1236
 HU1236                         *CURRENT SURVEY CONTROL
 HU1236  ______________________________________________________________________
 HU1236* NAD 83(1991) POSITION- 38 22 03.55960(N) 075 34 59.32411(W)   ADJUSTED
 HU1236* NAVD 88 ORTHO HEIGHT -     9.3   (meters)       31.    (feet) VERTCON3
 HU1236  ______________________________________________________________________
 HU1236  GEOID HEIGHT    -        -35.826 (meters)                     GEOID18
 HU1236  LAPLACE CORR    -         -1.22  (seconds)                    DEFLEC18
 HU1236  HORZ ORDER      -  SECOND
 HU1236
 HU1236.The horizontal coordinates were established by classical geodetic methods
 HU1236.and adjusted by the National Geodetic Survey in January 1992.
 HU1236
 HU1236.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1236.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1236
 HU1236.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1236.GEOID18 height accuracy estimate available here.
 HU1236
 HU1236.Click photographs - Photos may exist for this station.
 HU1236
 HU1236.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1236
 HU1236. The following values were computed from the NAD 83(1991) position.
 HU1236
 HU1236;                    North         East     Units Scale Factor Converg.
 HU1236;SPC MD       -    78,773.623   523,815.610   MT  0.99998892   +0 53 21.4
 HU1236;SPC MD       -   258,443.13  1,718,551.71   sFT  0.99998892   +0 53 21.4
 HU1236;UTM  18      - 4,246,769.350   449,057.835   MT  0.99963196   -0 21 43.1
 HU1236
 HU1236!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1236!SPC MD       -   1.00000417  x   0.99998892  =   0.99999309
 HU1236!UTM  18      -   1.00000417  x   0.99963196  =   0.99963613
 HU1236
 HU1236:                Primary Azimuth Mark                     Grid Az
 HU1236:SPC MD       -  STREB 2                                  234 29 06.0
 HU1236:UTM  18      -  STREB 2                                  235 44 10.5
 HU1236
 HU1236_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4905746769(NAD 83)
 HU1236
 HU1236|---------------------------------------------------------------------|
 HU1236| PID    Reference Object                     Distance      Geod. Az  |
 HU1236|                                                           dddmmss.s |
 HU1236| HU1246 HIGHS RM 2                           20.701 METERS 00957     |
 HU1236| HU1243 STREB 2                             452.105 METERS 2352227.4 |
 HU1236| HU1245 HIGHS RM 1                           20.079 METERS 29145     |
 HU1236| HU1242 SALISBURY WCPB TV MAST              APPROX. 2.1 KM 3412253.8 |
 HU1236|---------------------------------------------------------------------|
 HU1236
 HU1236                          SUPERSEDED SURVEY CONTROL
 HU1236
 HU1236  NAD 83(1986)-  38 22 03.55157(N)    075 34 59.34956(W) AD(       ) 2
 HU1236  NGVD 29 (03/20/88)    9.5    (m)           31.     (f) VERT ANG       
 HU1236
 HU1236.Superseded values are not recommended for survey control.
 HU1236
 HU1236.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1236.See file dsdata.pdf to determine how the superseded data were derived.
 HU1236
 HU1236_MARKER: DD = SURVEY DISK
 HU1236_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HU1236_SP_SET: CURB
 HU1236_STAMPING: HIGHS 1985
 HU1236_MARK LOGO: MDSHA
 HU1236_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU1236_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1236
 HU1236  HISTORY     - Date     Condition        Report By
 HU1236  HISTORY     - 1985     MONUMENTED       MDSHA
 HU1236  HISTORY     - 19971018 GOOD             USPSQD
 HU1236  HISTORY     - 20050908 GOOD             GEOCAC
 HU1236
 HU1236                          STATION DESCRIPTION
 HU1236
 HU1236'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1985 (RGP)
 HU1236'THE STATION IS LOCATED IN SALISBURY --STREET RIGHT-OF-WAY--.
 HU1236'
 HU1236'TO REACH THE STATION FROM THE INTERSECTION OF US HIGHWAY 50 AND 13
 HU1236'BUSINESS AT SALISBURY, GO SOUTH ON US HIGHWAY 13 BUSINESS ROUTE FOR
 HU1236'0.2 KM (0.3 MI) TO A CROSSROADS.  TURN LEFT AND GO EAST ON EAST MAIN
 HU1236'STREET FOR 1.15 KM (0.7 MI) TO THE STATION ON THE RIGHT.
 HU1236'
 HU1236'THE STATION IS A STANDARD MARYLAND DOT STATE HIGHWAY ADMINISTRATION
 HU1236'DISK STAMPED ---HIGHS 1985--- SET IN A DRILL HOLE IN A CONCRETE CURB.
 HU1236'LOCATED 0.9 METER (3.1 FEET) WNW FROM A TRAFFIC SIGNAL POLE, 4.0
 HU1236'METERS (13.1 FEET) ENE FROM A DRAINAGE INLET, 21.4 METERS (70.3
 HU1236'FEET) N FROM A POWERLINE POLE NUMBERED 47322-93215, 6.9 METERS (22.8
 HU1236'FEET) SSE FROM THE CENTERLINE OF EAST MAIN STREET, AND, 10.4 METERS
 HU1236'(34.0 FEET) NNE FROM A HIGHS DAIRY STORE SIGN, AND 10.4 METERS (34.0
 HU1236'FEET) NNE FROM A HIGHS DAIRY STORE SIGN.
 HU1236'
 HU1236'REFERENCE MARK NO. 1 IS A PUNCH HOLE AND CROSS CUT SET IN A CONCRETE
 HU1236'CURB LOCATED 5.3 METERS (17.3 FEET) ESE FROM A FIRE HYDRANT, 15.3
 HU1236'METERS (50.3 FEET) SE FROM A POWERLINE POLE NUMBERED 47309-93226,
 HU1236'6.1 METERS (20.0 FEET) SW FROM THE CENTERLINE OF EAST WILLIAM
 HU1236'STREET, AND 9.9 METERS (32.4 FEET) NNW FROM THE CENTERLINE OF EAST
 HU1236'MAIN STREET.  MARK IS LEVEL WITH THE STATION.
 HU1236'
 HU1236'REFERENCE MARK NO. 2 IS A PUNCH HOLE AND CROSS CUT SET IN A CONCRETE
 HU1236'CURB LOCATED 2.1 METERS (6.8 FEET) E FROM A TRAFFIC SIGNAL POLE, 2.3
 HU1236'METERS (7.4 FEET) WSW FROM A POWER POLE NUMBERED 47321-93227, 30.0
 HU1236'METERS (98.5 FEET) SSW FROM THE SOUTH CORNER OF A BUILDING, AND 12.1
 HU1236'METERS (39.6 FEET) W FROM THE PROJECTED CENTERLINE OF TRUITT STREET.
 HU1236'MARK IS LEVEL WITH THE STATION.
 HU1236'
 HU1236'DESCRIBED BY M. R. ARCHER-SHEE.
 HU1236
 HU1236                          STATION RECOVERY (1997)
 HU1236
 HU1236'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU1236'RECOVERED IN GOOD CONDITION.
 HU1236
 HU1236                          STATION RECOVERY (2005)
 HU1236
 HU1236'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU1236'THE HIGHS DAIRY STORE HAS BEEN REPLACED WITH A CITGO/PITSTOP SERVICE
 HU1236'STATION.  BOTH REFERENCE MARK NO. 1 AND REFERENCE MARK NO. 2 WERE
 HU1236'SEARCHED FOR BUT NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4193 ***********************************************************************
 JV4193  DESIGNATION -  HIGHTOP
 JV4193  PID         -  JV4193
 JV4193  STATE/COUNTY-  MD/FREDERICK
 JV4193  COUNTRY     -  US
 JV4193  USGS QUAD   -  BLUE RIDGE SUMMIT (2019)
 JV4193
 JV4193                         *CURRENT SURVEY CONTROL
 JV4193  ______________________________________________________________________
 JV4193* NAD 83(1991) POSITION- 39 38 53.34109(N) 077 27 59.18176(W)   ADJUSTED
 JV4193* NAVD 88 ORTHO HEIGHT -   573.    (meters)     1880.    (feet) SCALED
 JV4193  ______________________________________________________________________
 JV4193  GEOID HEIGHT    -        -33.236 (meters)                     GEOID18
 JV4193  LAPLACE CORR    -          3.24  (seconds)                    DEFLEC18
 JV4193  HORZ ORDER      -  FIRST
 JV4193
 JV4193.The horizontal coordinates were established by classical geodetic methods
 JV4193.and adjusted by the National Geodetic Survey in January 1992.
 JV4193
 JV4193.The orthometric height was scaled from a topographic map.
 JV4193
 JV4193.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4193.GEOID18 height accuracy estimate available here.
 JV4193
 JV4193.Click photographs - Photos may exist for this station.
 JV4193
 JV4193.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4193
 JV4193. The following values were computed from the NAD 83(1991) position.
 JV4193
 JV4193;                    North         East     Units Scale Factor Converg.
 JV4193;SPC MD       -   220,066.197   359,963.809   MT  1.00004068   -0 17 33.9
 JV4193;SPC MD       -   722,000.51  1,180,981.26   sFT  1.00004068   -0 17 33.9
 JV4193;SPC PA S     -    34,995.078   624,339.499   MT  1.00005682   +0 11 02.3
 JV4193;SPC PA S     -   114,813.02  2,048,353.84   sFT  1.00005682   +0 11 02.3
 JV4193;UTM  18      - 4,391,613.889   288,376.611   MT  1.00015140   -1 34 27.7
 JV4193
 JV4193!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4193!SPC MD       -   0.99991536  x   1.00004068  =   0.99995603
 JV4193!SPC PA S     -   0.99991536  x   1.00005682  =   0.99997217
 JV4193!UTM  18      -   0.99991536  x   1.00015140  =   1.00006674
 JV4193
 JV4193:                Primary Azimuth Mark                     Grid Az
 JV4193:SPC MD       -  SALAMANDER                               193 21 11.1
 JV4193:SPC PA S     -  SALAMANDER                               192 52 34.9
 JV4193:UTM  18      -  SALAMANDER                               194 38 04.9
 JV4193
 JV4193_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8837691613(NAD 83)
 JV4193
 JV4193|---------------------------------------------------------------------|
 JV4193| PID    Reference Object                     Distance      Geod. Az  |
 JV4193|                                                           dddmmss.s |
 JV4193| JV4194 SABILLASVILLE ST SANITORIUM TK      APPROX. 7.2 KM 0052445.0 |
 JV4193| CK7477 HIGHTOP RM 2                         20.830 METERS 18328     |
 JV4193| JV4190 SALAMANDER                          APPROX. 8.3 KM 1930337.2 |
 JV4193| JV4187 FOXVILLE LOOKOUT TOWER              APPROX. 4.1 KM 2180508.5 |
 JV4193| CK7476 HIGHTOP RM 1                         13.874 METERS 33324     |
 JV4193|---------------------------------------------------------------------|
 JV4193
 JV4193                          SUPERSEDED SURVEY CONTROL
 JV4193
 JV4193  NAD 83(1986)-  39 38 53.34159(N)    077 27 59.18954(W) AD(       ) 1
 JV4193  NAD 27      -  39 38 52.99300(N)    077 28 00.23000(W) AD(       ) 1
 JV4193
 JV4193.Superseded values are not recommended for survey control.
 JV4193
 JV4193.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4193.See file dsdata.pdf to determine how the superseded data were derived.
 JV4193
 JV4193_MARKER: DS = TRIANGULATION STATION DISK
 JV4193_SETTING: 80 = SET IN A BOULDER
 JV4193
 JV4193  HISTORY     - Date     Condition        Report By
 JV4193  HISTORY     - 1939     MONUMENTED       CGS
 JV4193
 JV4193                          STATION DESCRIPTION
 JV4193
 JV4193'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (APR)
 JV4193'THIS STATION IS LOCATED ABOUT 3.5 MILES WNW OF THURMONT, 1.75
 JV4193'MILES NE OF FOXVILLE ON THE SUMMIT OF A HIGH ROUND-TOPPED
 JV4193'TIMBERED MOUNTAIN ON GOVERNMENT PROPERTY.  THE STATION MARK IS
 JV4193'A STANDARD DISK SET IN A DRILL HOLE IN AN OUTCROPPING BOULDER
 JV4193'2 BY 3 FEET IN CROSS SECTION, 37 FEET SE OF A BLACK IRON WATER
 JV4193'RESERVOIR, 90 FEET NW OF THE CENTER LINE OF THE GRAVEL ROAD OVER
 JV4193'TOP OF THE MOUNTAIN.  BOULDER PROJECTS 6 INCHES.
 JV4193'
 JV4193'THE SURFACE MARK AND THE REFERENCE MARK NO.2 ARE STANDARD BRONZE
 JV4193'DISKS WEDGED IN BOULDERS AS DESCRIBED IN NOTES 4 AND
 JV4193'12C.  REFERENCE MARK NO.1 IS A STANDARD BRONZE DISK SET IN
 JV4193'CONCRETE AS DESCRIBED IN NOTE 11C.
 JV4193'
 JV4193'REFERENCE MARK NO.1 IS NW OF THE STATION, MARK IS SET IN THE
 JV4193'CONCRETE BASE OF WATER RESERVOIR 3 FEET SW OF THE LADDER.
 JV4193'
 JV4193'REFERENCE MARK NO.2 IS SSW OF THE STATION, MARK IS SET IN AN
 JV4193'OUTCROPPING BOULDER, PROJECTING 6 INCHES, 4 FEET E OF A 14-INCH
 JV4193'BASSWOOD TREE.
 JV4193'
 JV4193'NO AZIMUTH MARK WAS SET, DUE TO THE DENSE TREES AND POOR
 JV4193'VISIBILITY THE DAY STATION WAS BUILT.
 JV4193'
 JV4193'TO REACH FROM THE STOP LIGHT IN THURMONT, GO W ON PAVED AND
 JV4193'DIRT ROAD FOR 3.5 MILES TO A FORKS, TURN RIGHT AND GO UP THE
 JV4193'MOUNTAIN FOR 2.5 MILES TO T-ROAD RIGHT, TURN RIGHT GO 0.25 MILE
 JV4193'TO THE TOP AND STATION ON THE LEFT.
 JV4193'
 JV4193'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7114 ***********************************************************************
 HV7114  DESIGNATION -  HILL
 HV7114  PID         -  HV7114
 HV7114  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7114  COUNTRY     -  US
 HV7114  USGS QUAD   -  SOUTH RIVER (2016)
 HV7114
 HV7114                         *CURRENT SURVEY CONTROL
 HV7114  ______________________________________________________________________
 HV7114* NAD 83(1993) POSITION- 38 55 26.76533(N) 076 30 01.39767(W)   ADJUSTED
 HV7114* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7114  ______________________________________________________________________
 HV7114  GEOID HEIGHT    -        -33.407 (meters)                     GEOID18
 HV7114  LAPLACE CORR    -         -3.58  (seconds)                    DEFLEC18
 HV7114  HORZ ORDER      -  THIRD
 HV7114
 HV7114.The horizontal coordinates were established by classical geodetic methods
 HV7114.and adjusted by the National Geodetic Survey in November 1994.
 HV7114
 HV7114.The orthometric height was scaled from a topographic map.
 HV7114
 HV7114.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7114.GEOID18 height accuracy estimate available here.
 HV7114
 HV7114.Click photographs - Photos may exist for this station.
 HV7114
 HV7114.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7114
 HV7114. The following values were computed from the NAD 83(1993) position.
 HV7114
 HV7114;                    North         East     Units Scale Factor Converg.
 HV7114;SPC MD       -   139,699.317   443,323.396   MT  0.99995020   +0 18 48.9
 HV7114;SPC MD       -   458,330.18  1,454,470.18   sFT  0.99995020   +0 18 48.9
 HV7114;UTM  18      - 4,309,424.189   369,936.899   MT  0.99980830   -0 56 34.1
 HV7114
 HV7114!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7114!SPC MD       -   1.00000512  x   0.99995020  =   0.99995532
 HV7114!UTM  18      -   1.00000512  x   0.99980830  =   0.99981342
 HV7114
 HV7114:                Primary Azimuth Mark                     Grid Az
 HV7114:SPC MD       -  ARUNDEL                                  116 18 06.6
 HV7114:UTM  18      -  ARUNDEL                                  117 33 29.6
 HV7114
 HV7114_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6993609424(NAD 83)
 HV7114
 HV7114|---------------------------------------------------------------------|
 HV7114| PID    Reference Object                     Distance      Geod. Az  |
 HV7114|                                                           dddmmss.s |
 HV7114| CX2877 HILL RM                               8.070 METERS 03755     |
 HV7114| HV6341 ARUNDEL                             APPROX. 3.1 KM 1163655.5 |
 HV7114|---------------------------------------------------------------------|
 HV7114
 HV7114                          SUPERSEDED SURVEY CONTROL
 HV7114
 HV7114  NAD 83(1991)-  38 55 26.76441(N)    076 30 01.39942(W) AD(       ) 3
 HV7114  NAD 83(1986)-  38 55 26.76074(N)    076 30 01.41097(W) AD(       ) 3
 HV7114  NAD 27      -  38 55 26.34000(N)    076 30 02.54700(W) AD(       ) 3
 HV7114  USSD        -  38 55 26.71700(N)    076 30 03.37200(W) AD(       ) 3
 HV7114
 HV7114.Superseded values are not recommended for survey control.
 HV7114
 HV7114.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7114.See file dsdata.pdf to determine how the superseded data were derived.
 HV7114
 HV7114_MARKER: N = NAIL
 HV7114_SETTING: 0 = UNSPECIFIED SETTING
 HV7114
 HV7114  HISTORY     - Date     Condition        Report By
 HV7114  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7114  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV7114
 HV7114                          STATION DESCRIPTION
 HV7114
 HV7114'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7114'ON NE SHORE OF SOUTH RIVER, ON HILLS POINT, AT W SIDE OF ENTRANCE
 HV7114'TO DUVALLS CREEK, 50 FEET BACK FROM EXTREME S END OF HILLS POINT
 HV7114'AND 35 FEET ABOVE HIGH-WATER MARK.
 HV7114'
 HV7114'STATION MARK IS NAIL IN PINE STUB PROJECTING 3 INCHES ABOVE
 HV7114'SURFACE OF GROUND.
 HV7114'
 HV7114'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7114'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7114'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7114'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7114'IS 8.07 METERS (26.48 FEET) FROM STATION N 37 DEG 55 MIN E.
 HV7114'DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV7114'REFERENCE ARE AS FOLLOWS--CHIMNEY ON HOUSE ON OPPOSITE SHORE,
 HV7114'1-1/2 MILES,S 45 DEG 33 MIN W.  S CHIMNEY ON ALMSHOUSE, 2-1/2
 HV7114'MILES, N 60 DEG 37 MIN W.  NAIL IN BLAZE ON 4-INCH LOCUST TREE,
 HV7114'5.42 METERS (17.78 FEET), N 16 DEG 05 MIN E.  WATER TOWER AT SOUTH
 HV7114'RIVER CLUB, 3/4 MILE, N 36 DEG 00 MIN E.  NAIL IN BLAZE ON 6-INCH
 HV7114'LOCUST TREE, 4.67 METERS (15.32 FEET), N 60 DEG 31 MIN E.  N PEAK
 HV7114'OF BARN, 1/2 MILE, N 51 DEG 56 MIN E.
 HV7114
 HV7114                          STATION RECOVERY (1932)
 HV7114
 HV7114'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV7114'STATION MARK WAS A NAIL IN A PINE STUB AND IS LOST.  REFERENCE
 HV7114'MARKS ARE GONE.  THE POINT HAS BEEN WASHED AWAY AT THIS LOCATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7833 ***********************************************************************
 HV7833  DESIGNATION -  HILL 2
 HV7833  PID         -  HV7833
 HV7833  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7833  COUNTRY     -  US
 HV7833  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7833
 HV7833                         *CURRENT SURVEY CONTROL
 HV7833  ______________________________________________________________________
 HV7833* NAD 83(1993) POSITION- 38 53 54.29006(N) 076 52 47.92329(W)   ADJUSTED
 HV7833* NAVD 88 ORTHO HEIGHT -    84.    (meters)      276.    (feet) SCALED
 HV7833  ______________________________________________________________________
 HV7833  GEOID HEIGHT    -        -32.395 (meters)                     GEOID18
 HV7833  LAPLACE CORR    -         -4.75  (seconds)                    DEFLEC18
 HV7833  HORZ ORDER      -  SECOND
 HV7833
 HV7833.The horizontal coordinates were established by classical geodetic methods
 HV7833.and adjusted by the National Geodetic Survey in November 1994.
 HV7833
 HV7833.The orthometric height was scaled from a topographic map.
 HV7833
 HV7833.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7833.GEOID18 height accuracy estimate available here.
 HV7833
 HV7833.Click photographs - Photos may exist for this station.
 HV7833
 HV7833.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7833
 HV7833. The following values were computed from the NAD 83(1993) position.
 HV7833
 HV7833;                    North         East     Units Scale Factor Converg.
 HV7833;SPC MD       -   136,736.076   410,411.341   MT  0.99994993   +0 04 31.2
 HV7833;SPC MD       -   448,608.28  1,346,491.21   sFT  0.99994993   +0 04 31.2
 HV7833;UTM  18      - 4,307,183.421   336,970.574   MT  0.99992729   -1 10 50.8
 HV7833
 HV7833!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7833!SPC MD       -   0.99999194  x   0.99994993  =   0.99994187
 HV7833!UTM  18      -   0.99999194  x   0.99992729  =   0.99991923
 HV7833
 HV7833_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3697007183(NAD 83)
 HV7833
 HV7833|---------------------------------------------------------------------|
 HV7833| PID    Reference Object                     Distance      Geod. Az  |
 HV7833|                                                           dddmmss.s |
 HV7833| CX2870 HILL RM 1                            40.970 METERS 06511     |
 HV7833| CX2871 HILL RM 2 AZIMUTH                    48.335 METERS 13403     |
 HV7833| CX2872 HILL RM 3                            13.134 METERS 17810     |
 HV7833| HV7832 HILL RESET                           30.248 METERS 31403     |
 HV7833|---------------------------------------------------------------------|
 HV7833
 HV7833                          SUPERSEDED SURVEY CONTROL
 HV7833
 HV7833  NAD 83(1991)-  38 53 54.28955(N)    076 52 47.92365(W) AD(       ) 2
 HV7833  NAD 83(1986)-  38 53 54.28813(N)    076 52 47.93528(W) AD(       ) 2
 HV7833  NAD 27      -  38 53 53.88781(N)    076 52 49.03333(W) AD(       ) 2
 HV7833
 HV7833.Superseded values are not recommended for survey control.
 HV7833
 HV7833.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7833.See file dsdata.pdf to determine how the superseded data were derived.
 HV7833
 HV7833_MARKER: DD = SURVEY DISK
 HV7833_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7833_STAMPING: USCGS HILL AND HILL 2 1942
 HV7833_MARK LOGO: PBPP
 HV7833_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7833
 HV7833  HISTORY     - Date     Condition        Report By
 HV7833  HISTORY     - 1942     MONUMENTED       CGS
 HV7833  HISTORY     - 1943     GOOD             CGS
 HV7833  HISTORY     - 1943     GOOD             CGS
 HV7833  HISTORY     - 1955     MARK NOT FOUND   USGS
 HV7833  HISTORY     - 1957     MARK NOT FOUND   CGS
 HV7833  HISTORY     - 1964     MARK NOT FOUND   MDDT
 HV7833
 HV7833                          STATION DESCRIPTION
 HV7833
 HV7833'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (OSR)
 HV7833'THIS STATION IS THE SAME SURFACE MARK WHICH MARKED STATION HILL
 HV7833'1846.  DUE TO A GRAVEL COMPANY CUTTING AWAY THE N PORTION OF THE
 HV7833'HILL ON WHICH STATION WAS LOCATED IT WAS NECESSARY TO MOVE IT
 HV7833'TO A NEW LOCATION.  IT WAS MOVED TO THE SE DIRECTLY ON LINE WITH
 HV7833'REFERENCE MARK NO.2, 1933 (AZIMUTH MARK), 30.248 METERS (99.241
 HV7833'FEET) FROM STATION HILL 1846.  MEASUREMENTS WERE MADE WITH
 HV7833'STEEL, 30-METER TAPE NO.3025 (STANDARDIZED TAPE).  A STAKE WAS
 HV7833'DRIVEN 15 METERS FROM STATION HILL 1846 AND MEASURED AS
 HV7833'FOLLOWS--HILL 1846 TO STAKE = 15.00 METERS (49.212 FEET).
 HV7833'STAKE TO HILL 2 = 15.248 METERS (50.029 FEET).
 HV7833'HORIZONTAL DISTANCE WAS MEASURED AND ABOUT 15-POUND TENSION WAS
 HV7833'USED.
 HV7833'
 HV7833'THE STATION IS IN THE NW CORNER OF A FIELD OWNED BY A
 HV7833'MR. BROWN.  IT IS 3 FEET S OF A N-AND-S FENCE WHICH CROSSES THE
 HV7833'HILL AND 8 FEET E OF A FENCE THAT RUNS S ALONG THE W EDGE OF
 HV7833'FIELD.  THERE IS A LARGE 2 1/2-FOOT DEAD TREE AT THE FENCE CORNER
 HV7833'AND ABOUT 6 FEET W OF STATION.  IT IS ON ABOUT 3-FOOT LOWER
 HV7833'GROUND THAN STATION HILL 1846 WAS ON.  THE SUBSURFACE MARK IS A
 HV7833'1-FOOT ROUND AND FLAT MASS OF CONCRETE ABOUT 5 INCHES THICK
 HV7833'WITH A 1/2-INCH DRILL HOLE 1 INCH DEEP IN THE CENTER OF A
 HV7833'CHISELED CROSS AND 3 FEET BELOW THE SURFACE OF GROUND.  THE
 HV7833'SURFACE MARK IS THE SAME MARK WHICH MARKED THE OLD STATION
 HV7833'HILL 1846.  IT IS A P.B. AND P.P. DISK SET IN CONCRETE IN A
 HV7833'12-INCH TILE.  ONLY THE TOP HALF OF THE TILE IS FILLED WITH
 HV7833'CONCRETE WHILE THE BOTTOM HALF IS FILLED WITH DIRT WITH A 4-INCH
 HV7833'SQUARE STONE POST ABOUT 26 INCHES LONG EMBEDDED IN IT WITH ABOUT 1
 HV7833'FOOT OF THE POST EXTENDING BELOW THE TILE.  MARK IS STAMPED
 HV7833'U.S.C. AND G.S. STA. HILL AND HILL 2, 1942.  IT PROJECTS ABOUT
 HV7833'2 INCHES.
 HV7833'
 HV7833'REFERENCE MARK NO.1 IS E OF STATION AND IS A BRONZE DISK STAMPED
 HV7833'HILL 2, 1933 - 1942, NO.1, SET IN THE TOP OF A CONCRETE POST WHICH
 HV7833'IS 1 FOOT S OF THE E-W FENCE LINE THAT RUNS PAST THE STATION ON
 HV7833'TOP OF THE RIDGE AND ALONG THE N SIDE OF A FIELD ON THE SE SLOPE
 HV7833'OF HILL AND NEAR THE SW CORNER OF A FIELD WHICH IS ON THE NE
 HV7833'SLOPE OF HILL.  ARROW POINTS TOWARDS THE OLD STATION HILL.
 HV7833'
 HV7833'REFERENCE MARK NO.2 (OLD) IS A BRONZE DISK STAMPED HILL 2 1942,
 HV7833'NO.2, SET IN THE TOP OF A 6-INCH TILE FILLED WITH CONCRETE.  IT
 HV7833'IS ABOUT 2 FEET W OF A N-AND-S FENCE WHICH RUNS N FROM THE TOP
 HV7833'OF THE RIDGE ALONG THE W EDGE OF A SMALL FIELD WHICH IS ON THE
 HV7833'NE SLOPE OF THE HILL.  IT IS 28 YARDS N FROM THE E-W FENCE ALONG
 HV7833'THE TOP OF THE RIDGE.  THE ARROW POINTS TOWARDS THE LOCATION
 HV7833'OF THE OLD STATION HILL.
 HV7833'
 HV7833'REFERENCE MARK NO.3 WAS MOVED TO THE W EDGE OF THE N-AND-S FENCE
 HV7833'WHICH RUNS ALONG THE W SIDE OF FIELD.  IT IS S OF STATION AND
 HV7833'JUST INSIDE THE EDGE OF WOODS AND 2 FEET W OF FENCE AND 5 PACES
 HV7833'E OF A ROAD CENTER WHICH COMES UP THE HILL THROUGH THE WOODS FROM
 HV7833'THE S.  IT IS A BRONZE DISK SET IN A CONCRETE POST THAT PROJECTS
 HV7833'ABOUT 4 INCHES AND IS STAMPED HILL 2, 1933, 1942, NO.3.  THE
 HV7833'ARROW POINTS TOWARDS THE STATION.
 HV7833'
 HV7833'AZIMUTH MARK (R.M. NO.2, 1933) IS ABOUT 0.3 MILE SE OF STATION.  IT
 HV7833'IS AT THE S EDGE OF A E-AND-W DIRT ROAD AND AT THE E EDGE OF A
 HV7833'FARM ROAD THAT RUNS S TO MR. BROWNS HOUSE.  TO REACH, GO S 0.3
 HV7833'MILE, THEN LEFT, E, ON A DIRT ROAD FOR 0.2 MILE TO MARK IN SE
 HV7833'ANGLE OF ROAD INTERSECTIONS, ON TOP OF A SMALL BARE HILL.  MARK
 HV7833'IS STAMPED HILL 1933 NO.2.  AZIMUTH WILL BE THE SAME AS IT WAS
 HV7833'FROM STATION HILL 1846.
 HV7833'
 HV7833'TO REACH FROM THE CAPITOL IN WASHINGTON GO NE OUT MARYLAND AVENUE
 HV7833'FOR 1-1/2 MILES.  THEN TURN RIGHT, E, ON BENNING ROAD FOR 2.6 MILES
 HV7833'TO ITS JUNCTION WITH CENTRAL AVENUE.  THEN LEFT, EASTERLY ON
 HV7833'CENTRAL AVENUE FOR 3.4 MILES, PASSING THROUGH CAPITOL HEIGHTS, TO
 HV7833'A NARROW ASPHALT ROAD LEFT, 50 YARDS AFTER PASSING A SMALL STORE
 HV7833'ON THE RIGHT.  THEN TURN LEFT, N, ON ASPHALT ROAD FOR 0.55 MILE
 HV7833'TO A WHITE HOUSE ON RIGHT JUST AFTER A LEFT CURVE IN ASPHALT
 HV7833'ROAD.  THEN TURN RIGHT, KEEP RIGHT OF HOUSE AND FOLLOW A TRAIL
 HV7833'ROAD NORTHERLY ALONG THE LEFT SIDE OF A FIELD AND UP THROUGH
 HV7833'WOODS FOR 0.2 MILE TO TOP OF HILL AND STATION ON THE RIGHT.
 HV7833
 HV7833                          STATION RECOVERY (1943)
 HV7833
 HV7833'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7833'THE STATION WAS RECOVERED AS DESCRIBED BY O.S. RISVOLD IN
 HV7833'1942.  FOLLOWING IS A COMPLETE DESCRIPTION.
 HV7833'
 HV7833'THE STATION IS LOCATED ABOUT 2 MILES EAST OF CAPITOL HEIGHTS
 HV7833'AND ABOUT .75 MILE NORTH OF CENTRAL AVENUE, ON PROPERTY OWNED
 HV7833'BY MR. BROWN.  IT IS 5.8 FEET EAST SOUTHEAST OF A 3 FOOT CHERRY
 HV7833'TREE STUMP AND 23.9 FEET SOUTHEAST OF THE EDGE OF THE GRAVEL
 HV7833'PIT.  IT IS A STANDARD PUBLIC BUILDINGS AND PUBLIC PARKS DISK SET
 HV7833'FLUSH IN THE CENTER OF A 12 INCH TILE FILLED WITH CONCRETE THAT
 HV7833'PROJECTS 2 INCHES.  IT IS STAMPED U.S.C. AND G. SURVEY STA.
 HV7833'HILL AND HILL 2 1942.  THE OLD REFERENCE MARK NO. 1 WAS LEFT
 HV7833'INTACT.  IT IS ABOUT 2-1/2 FEET EAST NORTHEAST OF THE STATION AND
 HV7833'IS FLUSH WITH THE GROUND.
 HV7833'
 HV7833'REFERENCE MARK NO. 1 IS EAST OF THE STATION, 1 FOOT SOUTH OF AN
 HV7833'EAST-WEST FENCE LINE.  IT IS STAMPED HILL 2 1942 NO.1 AND 1933 AND
 HV7833'PROJECTS 8 INCHES.  THE ARROW POINTS TO THE OLD STATION.
 HV7833'
 HV7833'REFERENCE MARK NO. 2 IS EAST NORTHEAST OF THE STATION, 2 FEET
 HV7833'WEST OF AN OLD FENCE LINE WHICH RUNS NORTH AND SOUTH AND ABOUT
 HV7833'84 FEET NORTH OF AN EAST-WEST FENCE LINE.  IT IS STAMPED HILL 2
 HV7833'1942 AND PROJECTS 1 FOOT.
 HV7833'
 HV7833'REFERENCE MARK NO. 3 IS SOUTH OF THE STATION 2-1/2 FEET WEST
 HV7833'OF A NORTH-SOUTH FENCE LINE.  IT IS STAMPED HILL 2 1942 NO. 3 AND
 HV7833'1933.
 HV7833'
 HV7833'REFERENCE MARK NO. 2 (AZIMUTH MARK) IS 0.3 MILE, AIRLINE,
 HV7833'SOUTHEAST OF THE STATION.  IT IS AT THE SOUTH EDGE OF AN EAST-WEST
 HV7833'GRAVEL ROAD AND AT THE EAST EDGE OF A FARM ROAD THAT RUNS SOUTH
 HV7833'TO MR. BROWNS HOUSE.  IT IS 11 FEET SOUTHEAST OF THE EAST-WEST
 HV7833'ROAD AND 20 FEET EAST NORTHEAST OF THE CENTER OF THE FARM
 HV7833'ROAD.  41 FEET WEST OF A POWERLINE POLE.  IT IS STAMPED HILL NO.
 HV7833'2 1933 AND PROJECTS 8 INCHES. TO REACH FROM THE
 HV7833'STATION GO SOUTH 0.3 MILE, THEN LEFT, EAST, ON A GRAVEL ROAD FOR
 HV7833'0.2 MILE TO THE MARK ON THE RIGHT AS DESCRIBED.
 HV7833'
 HV7833'TO REACH THE STATION FROM LARGO, A SMALL TOWN 8 MILES NORTHWEST
 HV7833'OF UPPER MARLBORO, GO WEST TOWARDS CAPITOL HEIGHTS FOR 2.6 MILES
 HV7833'TO A MACADAM ROAD RIGHT.  TURN RIGHT AND GO 0.55 MILE TO A WHITE
 HV7833'COTTAGE ON THE RIGHT JUST AFTER A LEFT CURVE IN THE ROAD, TURN
 HV7833'RIGHT AND KEEP TO THE RIGHT OF THE HOUSE AND FOLLOW TRAIL ROAD
 HV7833'FOR 0.2 MILE TO THE HIGHEST POINT AND THE STATION ON THE RIGHT
 HV7833'AS DESCRIBED.
 HV7833'
 HV7833'A 4-FOOT STAND WILL SEE A 100-FOOT LIGHT AT STATION BEANE 1933.
 HV7833'
 HV7833'A 64-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION MELDWOOD.
 HV7833'
 HV7833'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT WOOD 1934.
 HV7833'
 HV7833'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 HV7833
 HV7833                          STATION RECOVERY (1943)
 HV7833
 HV7833'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV7833'STATION AND ALL REFERENCE MARKS RECOVERED AS DESCRIBED BY
 HV7833'G.W.L. IN 1943.
 HV7833'
 HV7833'THE DESCRIPTION IS ADEQUATE EXCEPT THAT THERE IS NO DISTANCE
 HV7833'NOR DIRECTION TO R.M. 1 (OLD) AND THE LIST OF REFERENCE MARKS
 HV7833'INCLUDES ONLY THE FOUR REFERENCE MARKS TO WHICH DISTANCES AND
 HV7833'DIRECTIONS WERE TAKEN, INSTEAD OF THE FIVE THAT ARE ACTUALLY
 HV7833'IN THE GROUND.
 HV7833'
 HV7833'REFERENCE MARK 2 WAS FOUND TO PROJECT 4 INCHES INSTEAD OF ONE
 HV7833'FOOT AS DESCRIBED.
 HV7833'
 HV7833'STATION IS LOCATED 4 FEET S OF AN E-W FENCE AND 5 FEET E OF A
 HV7833'N-S FENCE, AT THE POINT WHERE THEY JUNCTION.
 HV7833
 HV7833                          STATION RECOVERY (1955)
 HV7833
 HV7833'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1955
 HV7833'STATION IS PROBABLY DESTROYED.
 HV7833'
 HV7833'HILL HAS BEEN REMOVED AND THERE WERE NO REFERENCE MARKS DISCOVERED.
 HV7833'
 HV7833'THE AZIMUTH MARK (R.M. 2) WAS LOCATED 0.3 MILE SE OF THE
 HV7833'STATION.  THIS MARK HAS BEEN DISTURBED.  IT IS NOW SITTING AT
 HV7833'AN ANGLE, BUT APPARENTLY IN THE SAME POSITION.
 HV7833
 HV7833                          STATION RECOVERY (1957)
 HV7833
 HV7833'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (JCE)
 HV7833'THE STATION, R.M. NO. 3, R.M. NO. 2 (OLD), AND R.M. NO. 1 WERE
 HV7833'SEARCHED FOR BUT NOT RECOVERED.  R.M. NO. 2 1933 (AZIMUTH MARK) WAS
 HV7833'NOT SEARCHED FOR.
 HV7833'
 HV7833'THE STATION AND ANY MARKS LOCATED ON THE SAME HILL AS THE STATION
 HV7833'ARE CERTAINLY TO HAVE BEEN DESTROYED.  THE ENTIRE TOP OF THE HILL
 HV7833'HAS BEEN LEVELED OFF BY MACHINERY AND TWO VERY LARGE WATER TANKS
 HV7833'OCCUPY THE LOCATION FOR THIS STATION.
 HV7833
 HV7833                          STATION RECOVERY (1964)
 HV7833
 HV7833'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1964
 HV7833'STATION AND REFERENCE MARKS WERE DESTROYED BY THE CONSTRUCTION
 HV7833'OF TWO WSSC WATER TANKS.  THE AZIMUTH MARK (RM 2) WAS RECOVERED
 HV7833'AS DESCRIBED, HOWEVER, THE MONUMENT IS LEANING APPROXIMATELY
 HV7833'20 DEG OUT OF PLUMB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7829 ***********************************************************************
 HV7829  DESIGNATION -  HILL 3
 HV7829  PID         -  HV7829
 HV7829  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7829  COUNTRY     -  US
 HV7829  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7829
 HV7829                         *CURRENT SURVEY CONTROL
 HV7829  ______________________________________________________________________
 HV7829* NAD 83(1993) POSITION- 38 53 52.27753(N) 076 52 49.27737(W)   ADJUSTED
 HV7829* NAVD 88 ORTHO HEIGHT -    79.91  (+/-2cm)      262.2   (feet) VERTCON3
 HV7829  ______________________________________________________________________
 HV7829  GEOID HEIGHT    -        -32.394 (meters)                     GEOID18
 HV7829  LAPLACE CORR    -         -4.74  (seconds)                    DEFLEC18
 HV7829  HORZ ORDER      -  FIRST
 HV7829  VERT ORDER      -  THIRD ? (See Below)
 HV7829
 HV7829.The horizontal coordinates were established by classical geodetic methods
 HV7829.and adjusted by the National Geodetic Survey in November 1994.
 HV7829
 HV7829.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7829.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7829
 HV7829.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7829.GEOID18 height accuracy estimate available here.
 HV7829
 HV7829.The vertical order pertains to the NGVD 29 superseded value.
 HV7829
 HV7829.Click photographs - Photos may exist for this station.
 HV7829
 HV7829.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7829
 HV7829. The following values were computed from the NAD 83(1993) position.
 HV7829
 HV7829;                    North         East     Units Scale Factor Converg.
 HV7829;SPC MD       -   136,673.976   410,378.794   MT  0.99994992   +0 04 30.3
 HV7829;SPC MD       -   448,404.54  1,346,384.43   sFT  0.99994992   +0 04 30.3
 HV7829;UTM  18      - 4,307,122.050   336,936.674   MT  0.99992743   -1 10 51.6
 HV7829
 HV7829!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7829!SPC MD       -   0.99999255  x   0.99994992  =   0.99994247
 HV7829!UTM  18      -   0.99999255  x   0.99992743  =   0.99991998
 HV7829
 HV7829:                Primary Azimuth Mark                     Grid Az
 HV7829:SPC MD       -  HILL 3 AZ MK 2                           162 20 20.0
 HV7829:UTM  18      -  HILL 3 AZ MK 2                           163 35 41.9
 HV7829
 HV7829_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3693607122(NAD 83)
 HV7829
 HV7829|---------------------------------------------------------------------|
 HV7829| PID    Reference Object                     Distance      Geod. Az  |
 HV7829|                                                           dddmmss.s |
 HV7829| CX2876 HILL 3 RM 5                          25.978 METERS 02606     |
 HV7829| CX2874 HILL 3 AZ MK 2                                     1622450.3 |
 HV7829| HV7602 DISTRICT HTS RAD MAST               APPROX. 4.5 KM 1974558.1 |
 HV7829| HV7596 SUITLAND RAD STA WPGC FM S MST      APPROX. 4.7 KM 2142900.5 |
 HV7829| HV7768 SEAT PLEASANT POLICE RAD MAST       APPROX. 2.1 KM 2553019.1 |
 HV7829| CX2875 HILL 3 RM 4                          32.175 METERS 32434     |
 HV7829|---------------------------------------------------------------------|
 HV7829
 HV7829                          SUPERSEDED SURVEY CONTROL
 HV7829
 HV7829  NAD 83(1991)-  38 53 52.27713(N)    076 52 49.27756(W) AD(       ) 1
 HV7829  NAD 83(1986)-  38 53 52.27554(N)    076 52 49.28955(W) AD(       ) 1
 HV7829  NAD 27      -  38 53 51.87344(N)    076 52 50.38819(W) AD(       ) 1
 HV7829  NGVD 29              80.15   (m)          263.0    (f) LEVELING    3  
 HV7829  NGVD 29 (07/19/86)   80.1    (m)          263.     (f) VERT ANG       
 HV7829
 HV7829.Superseded values are not recommended for survey control.
 HV7829
 HV7829.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7829.See file dsdata.pdf to determine how the superseded data were derived.
 HV7829
 HV7829_MARKER: DS = TRIANGULATION STATION DISK
 HV7829_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7829_STAMPING: HILL 3 1970
 HV7829_MARK LOGO: CGS
 HV7829_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7829+STABILITY: SURFACE MOTION
 HV7829_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7829+SATELLITE: SATELLITE OBSERVATIONS - January 07, 2001
 HV7829
 HV7829  HISTORY     - Date     Condition        Report By
 HV7829  HISTORY     - 1970     MONUMENTED       NGS
 HV7829  HISTORY     - 1970     GOOD             NGS
 HV7829  HISTORY     - 19880718 GOOD             DEWDAV
 HV7829  HISTORY     - 20001117 GOOD             GEOMET
 HV7829  HISTORY     - 20010107 GOOD             GEOMET
 HV7829
 HV7829                          STATION DESCRIPTION
 HV7829
 HV7829'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7829'THE STATION IS LOCATED ABOUT 3 MILES SOUTHEAST OF CHEVERLY, 2
 HV7829'MILES WEST OF THE JUNCTION OF INTERSTATE 495 AND STATE HIGHWAY
 HV7829'214, 1-1/2 MILES EAST OF THE EAST CORNER OF THE DISTRICT OF
 HV7829'COLUMBIA AND ON PROPERTY OF THE WASHINGTON SUBURBAN SANITATION
 HV7829'COMMISSION.
 HV7829'
 HV7829'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 214 AND
 HV7829'INTERSTATE 495, GO WEST ON STATE HIGHWAY 214 FOR 1.7 MILES TO A
 HV7829'SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTH ON HILL ROAD FOR
 HV7829'0.2 MILE TO THE AZIMUTH MARK ON THE RIGHT.  CONTINUE NORTH ON
 HV7829'HILL ROAD FOR 0.5 MILE TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT
 HV7829'AND GO EAST FOR 0.05 MILE TO A LOCKED GATE AND THE ENTRANCE TO
 HV7829'THE ENCLOSURE AROUND THE WATER SYSTEM.  CONTINUE EAST FOR 0.1
 HV7829'MILE TO A LARGE STORAGE TANK ON THE LEFT AND THE STATION ON
 HV7829'TOP OF THE CUTBANK ON THE RIGHT.
 HV7829'
 HV7829'STATION MARK IS A STANDARD DISK, STAMPED HILL 3 1970, SET IN
 HV7829'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7829'PROJECTS 3 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 34.7
 HV7829'FEET NORTH OF THE FENCELINE, 29.6 FEET WEST OF A 30 INCH OAK
 HV7829'TREE, 23.7 FEET EAST OF A 30 INCH OAK TREE, AND 5 FEET
 HV7829'SOUTH-SOUTHEAST OF A WITNESS POST.
 HV7829'
 HV7829'REFERENCE MARK 4 IS A STANDARD DISK, STAMPED HILL 3 NO 4 1970,
 HV7829'SET IN A DRILL HOLE WITH CEMENT, FLUSH WITH THE SPILLWAY AROUND
 HV7829'A LARGE WATER TANK.  IT IS 55 FEET NORTH OF A TRACK ROAD, 2.1 FEET
 HV7829'SOUTH OF THE WATER TANK, 2.0 FEET NORTH OF THE EDGE OF THE
 HV7829'SPILLWAY, AND ABOUT 20 FEET LOWER THAN THE STATION.
 HV7829'
 HV7829'REFERENCE MARK 5 IS A STANDARD DISK, STAMPED HILL 3 NO 5 1970,
 HV7829'SET IN A DRILL HOLE WITH CEMENT, FLUSH WITH THE SPILLWAY AROUND
 HV7829'A LARGE WATER TANK.  IT IS 18 FEET WEST OF A TRACK ROAD, 2.2 FEET
 HV7829'EAST OF THE WATER TANK, 2.0 FEET WEST OF THE EDGE OF THE SPILLWAY,
 HV7829'AND IS ABOUT 20 FEET LOWER THAN THE STATION.
 HV7829'
 HV7829'AZIMUTH MARK IS A STANDARD DISK, STAMPED HILL 3 NO 2 1970, SET
 HV7829'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7829'PROJECTS 4 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 30.0
 HV7829'FEET EAST OF THE CENTERLINE OF HILL ROAD, 2.0 FEET NORTHEAST OF A
 HV7829'POWERLINE POLE NUMBERED 245 AND 1.5 FEET EAST OF A WITNESS POST.
 HV7829'
 HV7829'THE DISTANCE BETWEEN REFERENCE MARKS 4 AND 5 WAS NOT MEASURED DUE
 HV7829'TO OBSTRUCTION.
 HV7829
 HV7829                          STATION RECOVERY (1970)
 HV7829
 HV7829'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970
 HV7829'RECOVERED IN GOOD CONDITION.
 HV7829
 HV7829                          STATION RECOVERY (1988)
 HV7829
 HV7829'RECOVERY NOTE BY DEWBERRY DAVIS 1988
 HV7829'THE STATION IS LOCATED IN PRINCE GEORGES COUNTY, MD, 1.7 MILES  EAST
 HV7829'OF THE  EASTERN MOST POINT ON THE DISTRICT OF COLUMBIA BOUNDARY.
 HV7829'TO REACH THE STATION FROM THE INTERSECTION OF U.S. ROUTE 495, THE
 HV7829'BELTWAY, AND CENTRAL AVENUE, GO WEST ON CENTRAL AVENUE FOR 1.6 MILES
 HV7829'TO HILL ROAD ON THE RIGHT, TURN RIGHT AND GO NORTH ON HILL ROAD FOR
 HV7829'0.7 MILE TO A DRIVE ON THE RIGHT LEADING TO THE WSSC FACILITY.
 HV7829'CONTINUE UP DRIVE PASSING THROUGH GATE  AND BEAR RIGHT ALONG A GRAVEL
 HV7829'DRIVE TO THE STATION ON THE RIGHT.
 HV7829'THE STATION MARK IS A STANDARD DISK SET IN CONCRETE STAMPED ---HILL 3
 HV7829'1970---, AND ABOUT 1.7 FEET SOUTH OF A WITNESS POST.  THE STATION IS
 HV7829'ON TOP OF A SMALL MOUND AT THE SOUTH END OF THE WSSC FACILITY.
 HV7829'REFERENCE MARK 5 WAS SET IN A CLEAR AREA TO THE LEFT OF THE ENTRANCE
 HV7829'INTO THE FACILITY, SINCE HILL 3 IS NOT SUITABLE FOR GPS OCCUPATION.
 HV7829'THE MARK IS A BRASS BOLT SET IN A CONCRETE POST FLUSH WITH THE GROUND.
 HV7829'IT IS 7.8 FEET WEST OF THE DIRT TRACK WHICH BRANCHES TO THE LEFT AT
 HV7829'THE TOP OF THE HILL.  THE MARK IS 79.25 FEET NE OF THE FENCE POST AT
 HV7829'THE SOUTHWEST CORNER OF THE FACILITY, AND 179.55 FEET NORTH OF A PK
 HV7829'NAIL IN A LARGE TREE LOCATED  SOUTH OF THE ENTRANCE DRIVE.  RM 5 IS
 HV7829'277.08 FEET ON AN AZIMUTH OF 112-32-50 FROM NORTH FROM HILL 3.
 HV7829
 HV7829                          STATION RECOVERY (2000)
 HV7829
 HV7829'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 HV7829'ADDRESS IS 551 HILL ROAD, LANDOVER, MARYLAND 20785.  A 24 HOUR NOTICE
 HV7829'IS RECOMMENDED.
 HV7829
 HV7829                          STATION RECOVERY (2001)
 HV7829
 HV7829'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2001 (MN)
 HV7829'CONTACT PERSON, KENNETH JACKSON
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3179 ***********************************************************************
 DI3179  DESIGNATION -  HILL POINT 1
 DI3179  PID         -  DI3179
 DI3179  STATE/COUNTY-  MD/DORCHESTER
 DI3179  COUNTRY     -  US
 DI3179  USGS QUAD   -  CHURCH CREEK (2016)
 DI3179
 DI3179                         *CURRENT SURVEY CONTROL
 DI3179  ______________________________________________________________________
 DI3179* NAD 83(2011) POSITION- 38 36 13.44504(N) 076 13 38.88347(W)   ADJUSTED
 DI3179* NAD 83(2011) ELLIP HT-   -33.658 (meters)        (06/27/12)   ADJUSTED
 DI3179* NAD 83(2011) EPOCH   -  2010.00
 DI3179* NAVD 88 ORTHO HEIGHT -     1.0   (meters)        3.    (feet) GPS OBS
 DI3179  ______________________________________________________________________
 DI3179  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3179  GEOID HEIGHT    -        -34.622 (meters)                     GEOID03
 DI3179  GEOID HEIGHT    -        -34.652 (meters)                     GEOID18
 DI3179  NAD 83(2011) X  -  1,188,164.935 (meters)                     COMP
 DI3179  NAD 83(2011) Y  - -4,847,371.663 (meters)                     COMP
 DI3179  NAD 83(2011) Z  -  3,958,013.849 (meters)                     COMP
 DI3179  LAPLACE CORR    -         -4.82  (seconds)                    DEFLEC18
 DI3179
 DI3179  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3179  Standards:
 DI3179         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3179            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3179  -------------------------------------------------------------------
 DI3179  NETWORK    0.60   0.86           0.27   0.21   0.44     -0.05429177
 DI3179  -------------------------------------------------------------------
 DI3179  Click here for local accuracies and other accuracy information.
 DI3179
 DI3179.The horizontal coordinates were established by GPS observations
 DI3179.and adjusted by the National Geodetic Survey in June 2012.
 DI3179
 DI3179.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3179.been affixed to the stable North American tectonic plate. See 
 DI3179.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3179
 DI3179.The horizontal coordinates are valid at the epoch date displayed above
 DI3179.which is a decimal equivalence of Year/Month/Day.
 DI3179
 DI3179.The orthometric height was determined by GPS observations and a
 DI3179.high-resolution geoid model.
 DI3179
 DI3179.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3179.GEOID18 height accuracy estimate available here.
 DI3179
 DI3179.Click photographs - Photos may exist for this station.
 DI3179
 DI3179.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3179
 DI3179.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3179
 DI3179.The ellipsoidal height was determined by GPS observations
 DI3179.and is referenced to NAD 83.
 DI3179
 DI3179. The following values were computed from the NAD 83(2011) position.
 DI3179
 DI3179;                    North         East     Units Scale Factor Converg.
 DI3179;SPC MD       -   104,302.932   467,289.948   MT  0.99996106   +0 29 05.5
 DI3179;SPC MD       -   342,200.54  1,533,100.44   sFT  0.99996106   +0 29 05.5
 DI3179;UTM  18      - 4,273,518.478   393,119.288   MT  0.99974067   -0 45 57.3
 DI3179
 DI3179!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3179!SPC MD       -   1.00000528  x   0.99996106  =   0.99996634
 DI3179!UTM  18      -   1.00000528  x   0.99974067  =   0.99974595
 DI3179
 DI3179:                Primary Azimuth Mark                     Grid Az
 DI3179:SPC MD       -  HILL POINT 2                             270 37 06.5
 DI3179:UTM  18      -  HILL POINT 2                             271 52 09.3
 DI3179
 DI3179_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9311973518(NAD 83)
 DI3179
 DI3179|---------------------------------------------------------------------|
 DI3179| PID    Reference Object                     Distance      Geod. Az  |
 DI3179|                                                           dddmmss.s |
 DI3179| DI3180 HILL POINT 2                        402.926 METERS 2710612.0 |
 DI3179|---------------------------------------------------------------------|
 DI3179
 DI3179                          SUPERSEDED SURVEY CONTROL
 DI3179
 DI3179  NAD 83(1991)-  38 36 13.44532(N)    076 13 38.88441(W) AD(       ) 1
 DI3179  ELLIP H (01/05/07)  -33.632  (m)                       GP(       ) 4 2
 DI3179
 DI3179.Superseded values are not recommended for survey control.
 DI3179
 DI3179.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3179.See file dsdata.pdf to determine how the superseded data were derived.
 DI3179
 DI3179_MARKER: DD = SURVEY DISK
 DI3179_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3179_STAMPING: HILL POINT 1
 DI3179_MARK LOGO: MD-019
 DI3179_PROJECTION: RECESSED 5 CENTIMETERS
 DI3179_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3179_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3179+STABILITY: SURFACE MOTION
 DI3179_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3179+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3179
 DI3179  HISTORY     - Date     Condition        Report By
 DI3179  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3179
 DI3179                          STATION DESCRIPTION
 DI3179
 DI3179'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3179'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR CAMBRIDGE,
 DI3179'MARYLAND.   IT IS ABOUT 8.5 MI (13.7 KM) NORTHWEST OF CAMBRIDGE,
 DI3179'MARYLAND, ABOUT 14.6 MI (23.5 KM)  SOUTHWEST OF EASTON, MARYLAND AND
 DI3179'ABOUT 37.9 MI (61.0 KM) NORTHWEST OF SALISBURY,  MARYLAND.
 DI3179'
 DI3179'TO REACH THE STATION FROM THE INTERSECTION OF US RTE 50 AND SR 16
 DI3179'(MOUNT HOLLY-EAST  NEW MARKET ROAD) PROCEED NORTHWEST ON US RTE 50 FOR
 DI3179'3.5 MI (5.6 KM) TO INTERSECTION  WITH CRUSADER ROAD.  TURN LEFT AND
 DI3179'PROCEED 0.1 MI (0.2 KM) SOUTH TO INTERSECTION WITH SR  SR 343
 DI3179'(WASHINGTON STREET/ CAMBRIDGE HUDSON ROAD).  TURN RIGHT AND PROCEED
 DI3179'9.6 MI (15.4  KM) NORTHWEST TO THE STATION ON THE LEFT.
 DI3179'STATION IS 3.0 FT (0.9 M) SOUTH OF THE SOUTH EDGE OF CAMBRIDGE HUDSON
 DI3179'ROAD, 40.5 FT (12.3 M)  NORTHWEST OF UTILITY POLE DPL 28931-07995 AND
 DI3179'107.0 FT (32.6 M) SOUTHEAST OF UTILITY POLE  CP 298.  A 3 IN BRASS
 DI3179'DISK STAMPED HILL POINT 1 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE
 DI3179'MONUMENT RECESSED 0.20 FT BELOW THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3180 ***********************************************************************
 DI3180  DESIGNATION -  HILL POINT 2
 DI3180  PID         -  DI3180
 DI3180  STATE/COUNTY-  MD/DORCHESTER
 DI3180  COUNTRY     -  US
 DI3180  USGS QUAD   -  CHURCH CREEK (2016)
 DI3180
 DI3180                         *CURRENT SURVEY CONTROL
 DI3180  ______________________________________________________________________
 DI3180* NAD 83(2011) POSITION- 38 36 13.69632(N) 076 13 55.53260(W)   ADJUSTED
 DI3180* NAD 83(2011) ELLIP HT-   -33.656 (meters)        (06/27/12)   ADJUSTED
 DI3180* NAD 83(2011) EPOCH   -  2010.00
 DI3180* NAVD 88 ORTHO HEIGHT -     1.0   (meters)        3.    (feet) GPS OBS
 DI3180  ______________________________________________________________________
 DI3180  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3180  GEOID HEIGHT    -        -34.610 (meters)                     GEOID03
 DI3180  GEOID HEIGHT    -        -34.640 (meters)                     GEOID18
 DI3180  NAD 83(2011) X  -  1,187,772.514 (meters)                     COMP
 DI3180  NAD 83(2011) Y  - -4,847,462.858 (meters)                     COMP
 DI3180  NAD 83(2011) Z  -  3,958,019.905 (meters)                     COMP
 DI3180  LAPLACE CORR    -         -4.83  (seconds)                    DEFLEC18
 DI3180
 DI3180  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3180  Standards:
 DI3180         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3180            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3180  -------------------------------------------------------------------
 DI3180  NETWORK    0.61   0.86           0.27   0.22   0.44     -0.05975784
 DI3180  -------------------------------------------------------------------
 DI3180  Click here for local accuracies and other accuracy information.
 DI3180
 DI3180.The horizontal coordinates were established by GPS observations
 DI3180.and adjusted by the National Geodetic Survey in June 2012.
 DI3180
 DI3180.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3180.been affixed to the stable North American tectonic plate. See 
 DI3180.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3180
 DI3180.The horizontal coordinates are valid at the epoch date displayed above
 DI3180.which is a decimal equivalence of Year/Month/Day.
 DI3180
 DI3180.The orthometric height was determined by GPS observations and a
 DI3180.high-resolution geoid model.
 DI3180
 DI3180.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3180.GEOID18 height accuracy estimate available here.
 DI3180
 DI3180.Click photographs - Photos may exist for this station.
 DI3180
 DI3180.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3180
 DI3180.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3180
 DI3180.The ellipsoidal height was determined by GPS observations
 DI3180.and is referenced to NAD 83.
 DI3180
 DI3180. The following values were computed from the NAD 83(2011) position.
 DI3180
 DI3180;                    North         East     Units Scale Factor Converg.
 DI3180;SPC MD       -   104,307.281   466,887.062   MT  0.99996105   +0 28 55.1
 DI3180;SPC MD       -   342,214.80  1,531,778.64   sFT  0.99996105   +0 28 55.1
 DI3180;UTM  18      - 4,273,531.618   392,716.681   MT  0.99974174   -0 46 07.7
 DI3180
 DI3180!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3180!SPC MD       -   1.00000528  x   0.99996105  =   0.99996633
 DI3180!UTM  18      -   1.00000528  x   0.99974174  =   0.99974702
 DI3180
 DI3180:                Primary Azimuth Mark                     Grid Az
 DI3180:SPC MD       -  HILL POINT 1                             090 37 06.5
 DI3180:UTM  18      -  HILL POINT 1                             091 52 09.3
 DI3180
 DI3180_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9271673531(NAD 83)
 DI3180
 DI3180|---------------------------------------------------------------------|
 DI3180| PID    Reference Object                     Distance      Geod. Az  |
 DI3180|                                                           dddmmss.s |
 DI3180| DI3179 HILL POINT 1                        402.926 METERS 0910601.6 |
 DI3180|---------------------------------------------------------------------|
 DI3180
 DI3180                          SUPERSEDED SURVEY CONTROL
 DI3180
 DI3180  NAD 83(1991)-  38 36 13.69660(N)    076 13 55.53354(W) AD(       ) 1
 DI3180  ELLIP H (01/05/07)  -33.633  (m)                       GP(       ) 4 2
 DI3180
 DI3180.Superseded values are not recommended for survey control.
 DI3180
 DI3180.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3180.See file dsdata.pdf to determine how the superseded data were derived.
 DI3180
 DI3180_MARKER: DD = SURVEY DISK
 DI3180_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3180_STAMPING: HILL POINT 2
 DI3180_MARK LOGO: MD-019
 DI3180_PROJECTION: RECESSED 5 CENTIMETERS
 DI3180_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3180_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3180+STABILITY: SURFACE MOTION
 DI3180_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3180+SATELLITE: SATELLITE OBSERVATIONS - August 29, 2006
 DI3180
 DI3180  HISTORY     - Date     Condition        Report By
 DI3180  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3180
 DI3180                          STATION DESCRIPTION
 DI3180
 DI3180'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3180'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR CAMBRIDGE,
 DI3180'MARYLAND.   IT IS ABOUT 8.7 MI (14.0 KM) NORTHWEST OF CAMBRIDGE,
 DI3180'MARYLAND, ABOUT 14.8 MI (23.8 KM)  SOUTHWEST OF EASTON, MARYLAND AND
 DI3180'ABOUT 38.0 MI (61.1 KM) NORTHWEST OF SALISBURY,  MARYLAND.
 DI3180'
 DI3180'TO REACH THE STATION FROM THE INTERSECTION OF US RTE 50 AND SR 16
 DI3180'(MOUNT HOLLY-EAST  NEW MARKET ROAD) PROCEED NORTHWEST ON US RTE 50 FOR
 DI3180'3.5 MI (5.6 KM) TO INTERSECTION  WITH CRUSADER ROAD.  TURN LEFT AND
 DI3180'PROCEED 0.1 MI (0.2 KM) SOUTH TO INTERSECTION WITH SR  SR 343
 DI3180'(WASHINGTON STREET/ CAMBRIDGE HUDSON ROAD).  TURN RIGHT AND PROCEED
 DI3180'9.8 MI (15.8  KM) NORTHWEST TO THE STATION ON THE RIGHT.
 DI3180'STATION IS 2.5 FT (0.8 M) NORTH OF THE NORTH EDGE OF CAMBRIDGE HUDSON
 DI3180'ROAD, 23.5 FT (7.2 M)  SOUTHWEST OF UTILITY POLE CP 304 AND 183.0 FT
 DI3180'(55.8 M) WEST OF UTILITY POLE CP 303.  A 3 IN  BRASS DISK STAMPED HILL
 DI3180'POINT 2 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE MONUMENT  RECESSED
 DI3180'0.20 FT BELOW THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7832 ***********************************************************************
 HV7832  DESIGNATION -  HILL RESET
 HV7832  PID         -  HV7832
 HV7832  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7832  COUNTRY     -  US
 HV7832  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7832
 HV7832                         *CURRENT SURVEY CONTROL
 HV7832  ______________________________________________________________________
 HV7832* NAD 83(1993) POSITION- 38 53 54.97199(N) 076 52 48.82559(W)   ADJUSTED
 HV7832* NAVD 88 ORTHO HEIGHT -    84.    (meters)      276.    (feet) VERTCON3
 HV7832  ______________________________________________________________________
 HV7832  GEOID HEIGHT    -        -32.394 (meters)                     GEOID18
 HV7832  LAPLACE CORR    -         -4.74  (seconds)                    DEFLEC18
 HV7832  HORZ ORDER      -  FIRST
 HV7832
 HV7832.The horizontal coordinates were established by classical geodetic methods
 HV7832.and adjusted by the National Geodetic Survey in November 1994.
 HV7832
 HV7832.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7832.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7832
 HV7832.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7832.GEOID18 height accuracy estimate available here.
 HV7832
 HV7832.Click photographs - Photos may exist for this station.
 HV7832
 HV7832.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7832
 HV7832. The following values were computed from the NAD 83(1993) position.
 HV7832
 HV7832;                    North         East     Units Scale Factor Converg.
 HV7832;SPC MD       -   136,757.075   410,389.571   MT  0.99994993   +0 04 30.6
 HV7832;SPC MD       -   448,677.17  1,346,419.78   sFT  0.99994993   +0 04 30.6
 HV7832;UTM  18      - 4,307,204.891   336,949.270   MT  0.99992737   -1 10 51.4
 HV7832
 HV7832!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7832!SPC MD       -   0.99999194  x   0.99994993  =   0.99994187
 HV7832!UTM  18      -   0.99999194  x   0.99992737  =   0.99991931
 HV7832
 HV7832:                Primary Azimuth Mark                     Grid Az
 HV7832:SPC MD       -  HILL RM 2 AZIMUTH                        133 58 11.0
 HV7832:UTM  18      -  HILL RM 2 AZIMUTH                        135 13 33.0
 HV7832
 HV7832_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3694907204(NAD 83)
 HV7832
 HV7832|---------------------------------------------------------------------|
 HV7832| PID    Reference Object                     Distance      Geod. Az  |
 HV7832|                                                           dddmmss.s |
 HV7832| JV5862 AIRWAY BCN 57 B                     APPROX.15.2 KM 0204754.2 |
 HV7832| CX2868 HILL AZ MK                                         0394651.9 |
 HV7832| CX2870 HILL RM 1                            59.049 METERS 09343     |
 HV7832| CX2871 HILL RM 2 AZIMUTH                                  1340241.6 |
 HV7832| CX2872 HILL RM 3                            35.717 METERS 19527     |
 HV7832| HV4608 ALEXANDRIA EPIS THEO SEM SPIRE      APPROX.20.3 KM 2444630.4 |
 HV7832| HV4557 ARLINGTON TALL RAD TWR OF 3         APPROX.17.7 KM 2584813.3 |
 HV7832| HV4193 GEORGETOWN COLLEGE OBSERVATORY      APPROX.17.1 KM 2734042.7 |
 HV7832| HV4455 SOLDIERS HOME LIGHTNING ROD         APPROX.12.3 KM 2925322.0 |
 HV7832| CX2869 HILL RM                                            31152     |
 HV7832| HV7756 NEW YORK WASH AIRWAY BCN 57A        APPROX. 6.6 KM 3433805.7 |
 HV7832|---------------------------------------------------------------------|
 HV7832
 HV7832                          SUPERSEDED SURVEY CONTROL
 HV7832
 HV7832  NAD 83(1991)-  38 53 54.97147(N)    076 52 48.82594(W) AD(       ) 1
 HV7832  NAD 83(1986)-  38 53 54.97006(N)    076 52 48.83757(W) AD(       ) 1
 HV7832  NAD 27      -  38 53 54.56974(N)    076 52 49.93560(W) AD(       ) 1
 HV7832  USBS        -  38 53 51.54000(N)    076 52 31.15000(W) AD(       ) 3
 HV7832  USSD        -  38 53 54.90800(N)    076 52 49.76200(W) AD(       ) 3
 HV7832  NGVD 29 (07/19/86)   84.     (m)          276.     (f) VERT ANG       
 HV7832
 HV7832.Superseded values are not recommended for survey control.
 HV7832
 HV7832.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7832.See file dsdata.pdf to determine how the superseded data were derived.
 HV7832
 HV7832_MARKER: DD = SURVEY DISK
 HV7832_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7832_STAMPING: USCGS HILL
 HV7832_MARK LOGO: PBPP
 HV7832_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7832
 HV7832  HISTORY     - Date     Condition        Report By
 HV7832  HISTORY     - 1850     MONUMENTED       COASUR
 HV7832  HISTORY     - 1917     SEE DESCRIPTION  CGS
 HV7832  HISTORY     - 1927     SEE DESCRIPTION  CGS
 HV7832  HISTORY     - 1930     SEE DESCRIPTION  CGS
 HV7832  HISTORY     - 1933     GOOD             CGS
 HV7832  HISTORY     - 1934     GOOD             CGS
 HV7832  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV7832
 HV7832                          STATION DESCRIPTION
 HV7832
 HV7832'DESCRIBED BY COAST AND GEODETIC SURVEY 1917
 HV7832'STATION IS ABOUT 1-3/4 MILES A LITTLE N OF E FROM THE EASTERN
 HV7832'CORNER OF THE DISTRICT OF COLUMBIA, ON THE HIGHEST POINT OF A
 HV7832'SMALL PLATEAU KNOWN AS HILLS HILL, ON LAND BELONGING (IN 1917)
 HV7832'TO E.E. HILL.
 HV7832'
 HV7832'THE SUBSURFACE MARK IS AN EARTHENWARE CONE OR BOTTLE, ABOUT 2 FEET
 HV7832'3 INCHES BELOW SURFACE OF GROUND, WITH A COPPER NAIL IN A STUB AT
 HV7832'ITS CENTER.  THE SURFACE MARK IS A ROUGH GRANITE BLOCK, WITH THE
 HV7832'TOP DRESSED 4 INCHES SQUARE, ABOUT 26 INCHES LONG, WITH DIAGONAL
 HV7832'CROSSLINES ON TOP TO MARK THE CENTER, SET FLUSH WITH THE SURFACE
 HV7832'OF THE GROUND.  THREE SIMILAR STONES, TOPS DRESSED 6 INCHES
 HV7832'SQUARE, WITH CROSSLINES AND FLUSH WITH THE SURFACE WERE SET AT
 HV7832'THE FOLLOWING DIRECTIONS AND DISTANCES FROM THE STATION--N
 HV7832'5.26 FEET.  E 5.18 FEET.  S 4.89 FEET.  IN 1850 MEASUREMENTS
 HV7832'WERE TAKEN FROM THE STATION TO THE FOLLOWING WITNESS
 HV7832'MARKS--CEDAR STUMP WITH BRASS SCREW IN TOP, 151.25 FEET, S
 HV7832'78 DEG 14 MIN E.  CEDAR STUMP, 137.5 FEET, S 30 DEG 16 MIN
 HV7832'W.  CEDAR STUMP, 180.5 FEET, S 40 DEG 21 MIN W.
 HV7832
 HV7832                          STATION RECOVERY (1927)
 HV7832
 HV7832'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1927 (PB)
 HV7832'FOUR STAKES WERE DRIVEN AND TACKS PUT IN THEIR TOPS SO THAT WHEN
 HV7832'STRINGS WERE STRETCHED BETWEEN EACH PAIR THEY CROSSED AT RIGHT
 HV7832'ANGLES AND EXACTLY OVER THE CROSS ON SURFACE STONE.  THIS STONE WAS
 HV7832'TAKEN OUT AND HOLE DUG UNTIL UNDERGROUND MARKER WAS UNCOVERED.
 HV7832'
 HV7832'CONDITION OF UNDERGROUND MARKER AS FOUND--EARTHENWARE CONE 18 INCHES
 HV7832'HIGH, 15 INCHES IN DIAMETER AT THE LARGE END AND 6 INCHES IN
 HV7832'DIAMETER AT THE SMALL END (BOTH ENDS BEING OPEN) WAS FOUND ABOUT 2
 HV7832'FEET 3 INCHES BELOW SURFACE, THE LARGE END BEING UP AND JUST
 HV7832'BELOW THE BOTTOM OF THE CONE A ROTTED CEDAR STUB ABOUT 5 INCHES LONG
 HV7832'WAS FOUND.  NO COPPER NAIL COULD BE FOUND IN THE STUB AS
 HV7832'DESCRIBED IN PREVIOUS DESCRIPTION.  THE POSITION OF THE STUB
 HV7832'COULD NOT BE ACCURATELY CHECKED BY THE CROSSED STRINGS AND PLUMB BOB,
 HV7832'BECAUSE IT WAS SPLIT AND ROTTED AT THE TOP AND ONLY 1 INCH IN
 HV7832'DIAMETER.  THE SURFACE MARKER AND THREE WITNESS STONES WERE AS
 HV7832'DESCRIBED, THE DISTANCES TO EACH BEING CHECKED.
 HV7832'
 HV7832'THE HOLE WAS DUG ABOUT 4-1/2 FEET DEEP AND A HALF PINT GLASS BOTTLE
 HV7832'FILLED WITH SAND WAS PLACED WITH ITS TOP 4 FEET BELOW SURFACE AND
 HV7832'EXACTLY UNDER INTERSECTION OF THE STRINGS AND EARTH CAREFULLY
 HV7832'TAMPED AROUND IT.  THE EARTHENWARE CONE WAS PLACED IN THE HOLE WITH
 HV7832'ITS BOTTOM 1 INCH ABOVE TOP OF BOTTLE AND EARTH FILLED IN
 HV7832'AROUND IT.  THE 4-INCH SQUARE STONE WAS NEXT PLACED IN POSITION AND
 HV7832'CAREFULLY CENTERED, ITS TOP BEING ABOUT 16 INCHES BELOW
 HV7832'SURFACE.  A 12-INCH TILE WAS PLACED DOWN OVER THE STONE UNTIL
 HV7832'ITS TOP WAS 2 INCHES ABOVE THE SURFACE.  EARTH WAS TAMPED AROUND
 HV7832'THE TILE AND INSIDE AROUND THE STONE UNTIL IT WAS 2 INCHES
 HV7832'ABOVE TOP OF STONE.  THE REMAINDER OF THE TILE WAS FILLED IN WITH
 HV7832'CONCRETE AND A STANDARD P.B. AND P.P.  MARKER IMBEDDED IN THIS BEING
 HV7832'CAREFULLY CENTERED UNDER STRING INTERSECTION AS BEFORE.
 HV7832'BROKEN PIECES OF TILE WERE SCATTERED AROUND TO AID IN LOCATION IN
 HV7832'THE FUTURE.
 HV7832'
 HV7832'THE THREE CEDAR STUMPS REFERRED TO IN THE DESCRIPTION IN THE
 HV7832'MANUAL COULD NOT BE LOCATED.
 HV7832
 HV7832                          STATION RECOVERY (1930)
 HV7832
 HV7832'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1930 (RLP)
 HV7832'THIS STATION IS ABOUT 1-3/4 MILES A LITTLE N OF E FROM THE EASTERN
 HV7832'CORNER OF THE DISTRICT OF COLUMBIA, ON THE HIGHEST POINT OF A
 HV7832'SMALL HILL KNOWN AS HILLS HILL, ON LAND BELONGING TO MRS. E.E.
 HV7832'HILL.
 HV7832'
 HV7832'THE SURFACE MARK CONSISTS OF A STANDARD P.B. AND P.P. DISK MARKER
 HV7832'SET IN A 12-INCH TILE FILLED WITH CONCRETE.  THERE ARE TWO
 HV7832'SUBSURFACE MARKS, THE LOWER ONE OF WHICH CONSISTS OF A HALF-PINT
 HV7832'BOTTLE FILLED WITH SAND ABOVE WHICH IS AN EARTHEN CONE.  THE TOP
 HV7832'OF THE BOTTLE IS ABOUT 4 FEET BELOW THE SURFACE.  THE UPPER
 HV7832'SUBSURFACE MARK CONSISTS OF A 4-INCH SQUARED STONE SET WITH ITS
 HV7832'TOP ABOUT 16 INCHES BELOW THE SURFACE.  IT PROJECTS INTO THE
 HV7832'BOTTOM OF THE TILE OF THE SURFACE MARK, AND IS SEPARATED FROM
 HV7832'IT BY A CUSHION OF SAND.
 HV7832'
 HV7832'THREE GRANITE STONES WITH TOPS DRESSED TO 6-INCH SQUARE, MARKED
 HV7832'WITH CROSSLINES AND SET FLUSH WITH THE SURFACE OF THE GROUND
 HV7832'ARE SET AT THE FOLLOWING DISTANCES AND DIRECTIONS FROM THE
 HV7832'STATION MARK--N, 5.25 FEET.  E, 5.18 FEET.  S, 4.92 FEET.
 HV7832'
 HV7832'STATION IS ABOUT 8 MILES E OF WASHINGTON, D.C., AND IS REACHED
 HV7832'AS FOLLOWS--GO OUT MARYLAND AVENUE, NE, TO THE INTERSECTION OF
 HV7832'MARYLAND AVENUE AND BENNING ROAD.  FOLLOW BENNING ROAD 2.6 MILES
 HV7832'TO WHERE IT INTERSECTS CENTRAL AVENUE.  TURN LEFT AND FOLLOW
 HV7832'CENTRAL AVENUE FOR 3.4 MILES PASSING THROUGH CAPITOL HEIGHTS,
 HV7832'TO A GRAVEL ROAD TURNING OFF TO THE LEFT.  TURN LEFT HERE AND
 HV7832'FOLLOW THIS ROAD STRAIGHT AHEAD FOR 0.7 MILE TO A GATE.  TURN RIGHT
 HV7832'PASSING THROUGH THE GATE, AND FOLLOW THE ROAD UP THE HILL
 HV7832'0.2 MILE TO THE STATION, JUST ABOVE A GRAVEL PIT.
 HV7832
 HV7832                          STATION RECOVERY (1933)
 HV7832
 HV7832'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (RDH)
 HV7832'STATION WAS RECOVERED AS DESCRIBED AND FOUND IN GOOD
 HV7832'CONDITION.  THREE NEW REFERENCE MARKS WERE ESTABLISHED AND STAMPED
 HV7832'HILL, 1933.  THE STATION IS ON THE N EDGE OF THE TOP OF HILLS HILL,
 HV7832'ABOUT 3 MILES W OF LARGO, 1.75 MILES FROM E CORNER OF THE DISTRICT
 HV7832'OF COLUMBIA, 3/4 MILE N OF CENTRAL AVENUE.  THE HILL IS THE
 HV7832'PROPERTY OF MRS. E.E. HILL.  THE STATION IS ABOUT 28 YARDS N OF
 HV7832'N EDGE OF WOODS, AND CONSISTS OF A STANDARD P.B. AND P.P.
 HV7832'COPPER DISK, WITH U.S.C. AND G.S. HILL STAMPED ON IT, SET IN
 HV7832'THE CENTER OF THE TOP OF A 12-INCH TILE FILLED WITH CONCRETE,
 HV7832'FLUSH WITH GROUND.  THE MARK BEARS NO DATE.  THE THREE
 HV7832'FREESTONE POSTS WERE RECOVERED AT GROUND SURFACE AT THE
 HV7832'FOLLOWING DISTANCES FROM THE STATIONS N, 5.25 FEET.  E, 5.19
 HV7832'FEET.  S, 4.92 FEET.
 HV7832'
 HV7832'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN SQUARE BLOCKS
 HV7832'OR POSTS OF CONCRETE.
 HV7832'
 HV7832'REFERENCE MARK NO.1 IS E OF THE STATION, IN AN OLD FENCE LINE
 HV7832'ALONG THE TOP OF THE RIDGE, 4 FEET SW OF A SMALL TREE, AND
 HV7832'11 YARDS NE OF A 12-INCH CEDAR.
 HV7832'
 HV7832'REFERENCE MARK NO.2 IS SSE OF STATION, 3 YARDS S OF THE CENTER
 HV7832'LINE OF THE DIRT ROAD LEADING E OF W.C. BROWNS HOUSE, IN THE SE
 HV7832'ANGLE OF T-ROADS, 1 YARD WSW OF THE FIFTH TELEPHONE POLE FROM
 HV7832'GRAVEL ROAD ON S SIDE OF DIRT ROAD.  IT IS VISIBLE FROM THE GROUND
 HV7832'AT THE STATION.
 HV7832'
 HV7832'REFERENCE MARK NO.3 IS SW OF THE STATION, IN THE N EDGE OF THE
 HV7832'WOODS.  AND IN RANGE WITH THE E END OF A LARGE BARN IN THE VALLEY
 HV7832'AND AN ALUMINUM RESERVOIR ON THE NEXT RIDGE.  THE DISTANCES AND
 HV7832'DIRECTIONS TO THESE MARKS AND TO OTHER OBJECTS VISIBLE FROM THE
 HV7832'GROUND ARE LISTED BELOW.
 HV7832'
 HV7832'TRUCK CAN BE DRIVEN TO STATION.
 HV7832'
 HV7832'NOTE--THE CAPITOL AND MONUMENT WILL REQUIRE A LITTLE CLEARING OF
 HV7832'TREE TOPS TO BE VISIBLE.
 HV7832
 HV7832                          STATION RECOVERY (1934)
 HV7832
 HV7832'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV7832'THE STATION MARK WAS RECOVERED AND FOUND IN GOOD CONDITION, AS
 HV7832'DESCRIBED BY R.D. HORNE IN 1933.  THE TWO REFERENCE MARKS AND THE
 HV7832'AZIMUTH MARKS ESTABLISHED BY HIM WERE ALSO FOUND IN GOOD CONDITION.
 HV7832'THE DETAILS OF HIS DESCRIPTIONS WERE ALL CHECKED.  AN OLD
 HV7832'REFERENCE MARK WAS FOUND, ALTHOUGH THERE WAS NO MENTION OF IT IN
 HV7832'ANY AVAILABLE DESCRIPTIONS OF THIS STATION.  IT CONSISTS OF A
 HV7832'STANDARD REFERENCE TABLET SET IN THE CENTER OF THE TOP OF A TILE
 HV7832'FILLED WITH CONCRETE.  THE STATION NAME (HILL) IS
 HV7832'STAMPED ON IT ALONG WITH R.M. NO. 2.  THERE IS NO DATE.
 HV7832'
 HV7832'THE HILL ON WHICH THE STATION IS LOCATED IS BEING CUT AWAY FOR
 HV7832'GRAVEL, SO THE STATION MARK WILL PROBABLY BE LOST IN THE COURSE OF
 HV7832'ANOTHER YEAR.  FOR THIS REASON, THE REFERENCE MARKS WERE ALL TIED
 HV7832'IN WITH INVAR TAPE MEASUREMENTS AND FOUR POSITIONS OF THE
 HV7832'CIRCLE.
 HV7832'
 HV7832'THE OLD REFERENCE MARK IS ON THE NW SLOPE OF THE RIDGE THAT REFERENCE
 HV7832'MARK NO. 1 IS LOCATED ON, ABOUT 35 YARDS DOWN FROM THE SUMMIT OF
 HV7832'THE RIDGE, IN A WIRE FENCE LINE.  THE MARK PROJECTS ABOUT 2 INCHES.
 HV7832'
 HV7832'THE DIRECTIONS ARE LISTED.
 HV7832
 HV7832                          STATION RECOVERY (1942)
 HV7832
 HV7832'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (OSR)
 HV7832'DUE TO THE CUTTING AWAY OF THE NORTH PART OF THE HILL ON WHICH
 HV7832'THE STATION MARK WAS LOCATED, TO OBTAIN GRAVEL, THE STATION
 HV7832'MARK WAS MOVED.  SEE NEW DESCRIPTION FOR HILL 2, 1942.
 HV7832'
 HV7832'HILL 2 LOCATED ON LINE FROM HILL TO THE AZIMUTH MARK (R.M. NO. 2)
 HV7832'30.248 METERS (99.241 FT.) DISTANT (HORIZONTAL).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5952 ***********************************************************************
 JV5952  DESIGNATION -  HILLANDALE GOOD SHEPHERD CH
 JV5952  PID         -  JV5952
 JV5952  STATE/COUNTY-  MD/MONTGOMERY
 JV5952  COUNTRY     -  US
 JV5952  USGS QUAD   -  BELTSVILLE (2016)
 JV5952
 JV5952                         *CURRENT SURVEY CONTROL
 JV5952  ______________________________________________________________________
 JV5952* NAD 83(1991) POSITION- 39 00 51.07981(N) 076 58 39.76851(W)   ADJUSTED
 JV5952  ______________________________________________________________________
 JV5952  GEOID HEIGHT    -        -32.037 (meters)                     GEOID18
 JV5952  LAPLACE CORR    -         -3.14  (seconds)                    DEFLEC18
 JV5952  HORZ ORDER      -  THIRD
 JV5952
 JV5952.The horizontal coordinates were established by classical geodetic methods
 JV5952.and adjusted by the National Geodetic Survey in January 1992.
 JV5952
 JV5952.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5952.GEOID18 height accuracy estimate available here.
 JV5952
 JV5952.Click photographs - Photos may exist for this station.
 JV5952
 JV5952.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5952
 JV5952. The following values were computed from the NAD 83(1991) position.
 JV5952
 JV5952;                    North         East     Units Scale Factor Converg.
 JV5952;SPC MD       -   149,581.551   401,930.125   MT  0.99995276   +0 00 50.4
 JV5952;SPC MD       -   490,752.14  1,318,665.75   sFT  0.99995276   +0 00 50.4
 JV5952;UTM  18      - 4,320,211.862   328,773.400   MT  0.99996102   -1 14 43.1
 JV5952
 JV5952_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2877320211(NAD 83)
 JV5952
 JV5952                          SUPERSEDED SURVEY CONTROL
 JV5952
 JV5952  NAD 83(1986)-  39 00 51.07910(N)    076 58 39.77906(W) AD(       ) 3
 JV5952  NAD 27      -  39 00 50.68669(N)    076 58 40.86354(W) AD(       ) 3
 JV5952
 JV5952.Superseded values are not recommended for survey control.
 JV5952
 JV5952.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5952.See file dsdata.pdf to determine how the superseded data were derived.
 JV5952
 JV5952_MARKER: 90 = CHURCH SPIRE
 JV5952
 JV5952  HISTORY     - Date     Condition        Report By
 JV5952  HISTORY     - 1970     FIRST OBSERVED   NGS
 JV5952
 JV5952                          STATION DESCRIPTION
 JV5952
 JV5952'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV5952'THE STATION IS THE APEX OF THE 80 FOOT HIGH HILLANDALE GOOD
 JV5952'SHEPHERD METHODIST CHURCH SPIRE.  LOCATED AT 9701 NEW
 JV5952'HAMPSHIRE AVENUE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5460 ***********************************************************************
 JV5460  DESIGNATION -  HILLENDALE
 JV5460  PID         -  JV5460
 JV5460  STATE/COUNTY-  MD/BALTIMORE
 JV5460  COUNTRY     -  US
 JV5460  USGS QUAD   -  TOWSON (2016)
 JV5460
 JV5460                         *CURRENT SURVEY CONTROL
 JV5460  ______________________________________________________________________
 JV5460* NAD 83(1991) POSITION- 39 23 03.08715(N) 076 33 46.98028(W)   ADJUSTED
 JV5460* NAVD 88 ORTHO HEIGHT -   131.    (meters)      430.    (feet) SCALED
 JV5460  ______________________________________________________________________
 JV5460  GEOID HEIGHT    -        -32.694 (meters)                     GEOID18
 JV5460  LAPLACE CORR    -         -4.49  (seconds)                    DEFLEC18
 JV5460  HORZ ORDER      -  FIRST
 JV5460
 JV5460.The horizontal coordinates were established by classical geodetic methods
 JV5460.and adjusted by the National Geodetic Survey in January 1992.
 JV5460
 JV5460.The orthometric height was scaled from a topographic map.
 JV5460
 JV5460.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5460.GEOID18 height accuracy estimate available here.
 JV5460
 JV5460.Click photographs - Photos may exist for this station.
 JV5460
 JV5460.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5460
 JV5460. The following values were computed from the NAD 83(1991) position.
 JV5460
 JV5460;                    North         East     Units Scale Factor Converg.
 JV5460;SPC MD       -   190,747.436   437,645.299   MT  0.99998915   +0 16 27.3
 JV5460;SPC MD       -   625,810.55  1,435,841.29   sFT  0.99998915   +0 16 27.3
 JV5460;UTM  18      - 4,360,577.315   365,384.457   MT  0.99982312   -0 59 31.0
 JV5460
 JV5460!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5460!SPC MD       -   0.99998461  x   0.99998915  =   0.99997376
 JV5460!UTM  18      -   0.99998461  x   0.99982312  =   0.99980774
 JV5460
 JV5460:                Primary Azimuth Mark                     Grid Az
 JV5460:SPC MD       -  HILLENDALE AZ MK                         105 31 00.3
 JV5460:UTM  18      -  HILLENDALE AZ MK                         106 46 58.6
 JV5460
 JV5460_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6538460577(NAD 83)
 JV5460
 JV5460|---------------------------------------------------------------------|
 JV5460| PID    Reference Object                     Distance      Geod. Az  |
 JV5460|                                                           dddmmss.s |
 JV5460| CA9520 HILLENDALE RM 1                      33.251 METERS 01321     |
 JV5460| JV5444 MARYLAND TRAINING SCHOOL TANK       APPROX. 5.4 KM 0424053.3 |
 JV5460| JV5463 PARKVILLE HARFORD ROAD ME CH        APPROX. 2.4 KM 0930545.7 |
 JV5460| CA9519 HILLENDALE AZ MK                                   1054727.6 |
 JV5460| CA9521 HILLENDALE RM 2                      48.585 METERS 25543     |
 JV5460| JV5450 TOWSON YORK RD MD STC CUPOLA        APPROX. 3.8 KM 2835931.5 |
 JV5460|---------------------------------------------------------------------|
 JV5460
 JV5460                          SUPERSEDED SURVEY CONTROL
 JV5460
 JV5460  NAD 83(1986)-  39 23 03.08307(N)    076 33 46.98801(W) AD(       ) 1
 JV5460  NAD 27      -  39 23 02.69700(N)    076 33 48.10900(W) AD(       ) 1
 JV5460
 JV5460.Superseded values are not recommended for survey control.
 JV5460
 JV5460.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5460.See file dsdata.pdf to determine how the superseded data were derived.
 JV5460
 JV5460_MARKER: DS = TRIANGULATION STATION DISK
 JV5460_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5460_STAMPING: HILLENDALE 1938
 JV5460_MARK LOGO: CGS
 JV5460_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5460+STABILITY: SURFACE MOTION
 JV5460_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV5460+SATELLITE: SATELLITE OBSERVATIONS - March 22, 2002
 JV5460
 JV5460  HISTORY     - Date     Condition        Report By
 JV5460  HISTORY     - 1938     MONUMENTED       CGS
 JV5460  HISTORY     - 1954     GOOD             CGS
 JV5460  HISTORY     - 1958     GOOD             CGS
 JV5460  HISTORY     - 1983     GOOD             USPSQD
 JV5460  HISTORY     - 20020322 GOOD             USPSQD
 JV5460
 JV5460                          STATION DESCRIPTION
 JV5460
 JV5460'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (CDM)
 JV5460'THE STATION IS ON PROPERTY OF BALTIMORE CITY WATER SUPPLY ABOUT
 JV5460'300 YARDS NNE OF MORELAND PARK CEMETERY ON TAYLOR AVENUE.
 JV5460'
 JV5460'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JV5460'BRONZE DISKS SET IN CONCRETE.
 JV5460'
 JV5460'AZIMUTH MARK IS ON THE E SIDE OF OAKLEIGH AVENUE AT THE
 JV5460'INTERSECTION OF ORLANDO AVENUE ABOUT 4 FEET N OF A TELEGRAPH POLE.
 JV5460'
 JV5460'TO REACH FROM BALTIMORE, GO NE ON HARFORD ROAD TO TAYLOR AVENUE
 JV5460'AT PARKVILLE, 1.35 MILES ON TAYLOR AVENUE TO RIDGELY OAK AVENUE,
 JV5460'0.15 MILE NNE ON RIDGELY OAK AVENUE TO ORLANDO AVENUE, 0.05 MILE
 JV5460'SE ON ORLANDO AVENUE.  STATION IS ON A WOODED ELEVATION ON THE
 JV5460'N SIDE OF ORLANDO AVENUE ABOUT 50 YARDS, W OF A LARGE GRAVEL PIT.
 JV5460'
 JV5460'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5460
 JV5460                          STATION RECOVERY (1954)
 JV5460
 JV5460'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 JV5460'STATION, AZIMUTH MARK, AND REFERENCE MARKS 1 AND 2 WERE RECOVERED
 JV5460'IN GOOD CONDITION.  THE WOODED AREA, IN WHICH THE STATION IS
 JV5460'LOCATED, IS NOW BEING DEVELOPED INTO A RESIDENTIAL AREA.  REFERENCE
 JV5460'MARK 2 WAS REMOVED FROM ITS LOCATION AT THE REQUEST OF THE OWNER
 JV5460'(MR. F.R. EMMEL), AND WITH HIS PERMISSION REFERENCE MARK 3 WAS
 JV5460'SET IN THE CONCRETE WALK LEADING TO HIS HOUSE, NO. 1523 ORLANDO
 JV5460'AVENUE.  A NEW DESCRIPTION FOLLOWS--
 JV5460'
 JV5460'THE STATION IS LOCATED IN THE LAWN ON THE PROPERTY OF MR. LILLY
 JV5460'AT 1526 ORLANDO AVENUE.  IT IS 30 FT. N OF THE CENTERLINE OF
 JV5460'ORLANDO AVENUE, AND 3.0 FT. S OF THE EDGE OF A FLOWERBED.
 JV5460'
 JV5460'SURFACE, UNDERGROUND, REFERENCE MARK 1, AND AZIMUTH MARK ARE
 JV5460'STANDARD BRONZE DISKS SET IN CONCRETE.
 JV5460'REFERENCE MARK 3 IS A STANDARD BRONZE DISK SET IN A
 JV5460'CEMENT SIDEWALK.
 JV5460'
 JV5460'AZIMUTH MARK IS ON THE E SIDE OF OAKLEIGH AVENUE AT THE
 JV5460'INTERSECTION OF ORLANDO AVENUE, AND 14 FT. N OF A STREET LIGHT POLE.
 JV5460'
 JV5460'TO REACH THE STATION FROM BALTIMORE, GO NE ON LOCH RAVEN BOULEVARD
 JV5460'TO TAYLOR AVENUE, THEN SE ON TAYLOR AVENUE FOR 0.75 MI. TO RIDGELY
 JV5460'OAK AVENUE, THENCE N-NE ON RIDGELY OAK AVENUE FOR 0.15 MI. TO
 JV5460'ORLANDO AVENUE, THENCE E-SE ON ORLANDO AVENUE TO HOUSE NO. 1526
 JV5460'AND THE STATION.
 JV5460
 JV5460                          STATION RECOVERY (1958)
 JV5460
 JV5460'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (GCR)
 JV5460'THE STATION WAS RECOVERED.  ALL MARKS WERE LOCATED AS PREVIOUSLY
 JV5460'DESCRIBED IN THE 1954 RECOVERY DESCRIPTION BY E.H.K.
 JV5460'
 JV5460'THE DESCRIPTION TO REACH THE STATION IS ADEQUATE.
 JV5460'
 JV5460'THE STATION IS SITUATED ON CITY OWNED PROPERTY WHICH JOINS
 JV5460'PROPERTY OWNED BY MR. CHARLES LILLY AT 1526 ORLANDO AVENUE.
 JV5460
 JV5460                          STATION RECOVERY (1983)
 JV5460
 JV5460'RECOVERY NOTE BY US POWER SQUADRON 1983 (AHH)
 JV5460'HILLENDALE RECOVERED GOOD.
 JV5460'
 JV5460'STATION WAS VISITED AND ALL MARKS RECOVERED IN GOOD CONDITION.
 JV5460'AZIMUTH MARK IS NOW 13 FEET FROM TELEPHONE POLE AND NOT 4 FEET.
 JV5460'PAVEMENT HAS BEEN RESURFACED AND 1/2 OF THE BRONZE DISK IS COVERED.
 JV5460'AZIMUTH MARK IS IN FRONT OF PROPERTY 801 OAKLEIGH AVENUE.  THE
 JV5460'STATION AT 1526 ORLANDO AVENUE IS ON THE PROPERTY NOW OWNED BY
 JV5460'MR. BALLI BANDARI.  AN 8 INCH TREE IS ACTUALLY TOUCHING THE
 JV5460'CONCRETE BASE.  REFERENCE MARK NO. 3 SET IN THE CONCRETE WALK OF
 JV5460'1523 ORLANDO AVENUE IS LOCATED ONE FOOT AT THE END OF THE
 JV5460'WALK TOWARDS THE STREET.
 JV5460
 JV5460                          STATION RECOVERY (2002)
 JV5460
 JV5460'RECOVERY NOTE BY US POWER SQUADRON 2002 (CM)
 JV5460'REFERENCE MARK 3 FOUND IN GOOD CONDITION - ALL OTHER MARKS NOT FOUND
 JV5460'INCLUDING STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7463 ***********************************************************************
 HV7463  DESIGNATION -  HILLMEADE
 HV7463  PID         -  HV7463
 HV7463  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7463  COUNTRY     -  US
 HV7463  USGS QUAD   -  LANHAM (2016)
 HV7463
 HV7463                         *CURRENT SURVEY CONTROL
 HV7463  ______________________________________________________________________
 HV7463* NAD 83(1991) POSITION- 38 58 20.78923(N) 076 47 08.97876(W)   ADJUSTED
 HV7463* NAVD 88 ORTHO HEIGHT -    69.0   (meters)      226.    (feet) VERTCON3
 HV7463  ______________________________________________________________________
 HV7463  GEOID HEIGHT    -        -32.552 (meters)                     GEOID18
 HV7463  LAPLACE CORR    -         -5.52  (seconds)                    DEFLEC18
 HV7463  HORZ ORDER      -  FIRST
 HV7463
 HV7463.The horizontal coordinates were established by classical geodetic methods
 HV7463.and adjusted by the National Geodetic Survey in January 1992.
 HV7463
 HV7463.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7463.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7463
 HV7463.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7463.GEOID18 height accuracy estimate available here.
 HV7463
 HV7463.Click photographs - Photos may exist for this station.
 HV7463
 HV7463.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7463
 HV7463. The following values were computed from the NAD 83(1991) position.
 HV7463
 HV7463;                    North         East     Units Scale Factor Converg.
 HV7463;SPC MD       -   144,968.709   418,559.273   MT  0.99995127   +0 08 03.9
 HV7463;SPC MD       -   475,618.17  1,373,223.21   sFT  0.99995127   +0 08 03.9
 HV7463;UTM  18      - 4,315,235.013   345,296.813   MT  0.99989471   -1 07 24.3
 HV7463
 HV7463!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7463!SPC MD       -   0.99999429  x   0.99995127  =   0.99994556
 HV7463!UTM  18      -   0.99999429  x   0.99989471  =   0.99988900
 HV7463
 HV7463:                Primary Azimuth Mark                     Grid Az
 HV7463:SPC MD       -  HILLMEADE AZ MK                          353 33 16.3
 HV7463:UTM  18      -  HILLMEADE AZ MK                          354 48 44.5
 HV7463
 HV7463_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4529615235(NAD 83)
 HV7463
 HV7463|---------------------------------------------------------------------|
 HV7463| PID    Reference Object                     Distance      Geod. Az  |
 HV7463|                                                           dddmmss.s |
 HV7463| JV5858 BOWIE W BOWIE WSSC TANK             APPROX. 4.7 KM 0073125.9 |
 HV7463| JV5888 BOWIE W BOWIE PEPCO MICROWAVE       APPROX. 4.9 KM 0145503.7 |
 HV7463| JV4146 BOWIE RACE TRACK TANK               APPROX. 5.1 KM 0530353.0 |
 HV7463| HV7240 BOWIE BELAIR WSSC TANK              APPROX. 3.8 KM 0882832.8 |
 HV7463| CX2879 HILLMEADE RM 1                       21.946 METERS 14555     |
 HV7463| CX2880 HILLMEADE RM 2                       13.210 METERS 19419     |
 HV7463| HV7465 GLENN DALE WSSC TANK                APPROX. 2.8 KM 2343545.6 |
 HV7463| HV7467 GLENN DALE SANITORIUM TANK          APPROX. 2.2 KM 2443823.1 |
 HV7463| CX2878 HILLMEADE AZ MK                                    3534120.2 |
 HV7463|---------------------------------------------------------------------|
 HV7463
 HV7463                          SUPERSEDED SURVEY CONTROL
 HV7463
 HV7463  NAD 83(1986)-  38 58 20.78704(N)    076 47 08.99014(W) AD(       ) 1
 HV7463  NAD 27      -  38 58 20.38888(N)    076 47 10.09891(W) AD(       ) 1
 HV7463  NGVD 29 (07/19/86)   69.2    (m)          227.     (f) VERT ANG       
 HV7463
 HV7463.Superseded values are not recommended for survey control.
 HV7463
 HV7463.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7463.See file dsdata.pdf to determine how the superseded data were derived.
 HV7463
 HV7463_MARKER: DS = TRIANGULATION STATION DISK
 HV7463_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7463_STAMPING: HILLMEADE 1970
 HV7463_MARK LOGO: CGS
 HV7463_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7463+STABILITY: SURFACE MOTION
 HV7463
 HV7463  HISTORY     - Date     Condition        Report By
 HV7463  HISTORY     - 1970     MONUMENTED       NGS
 HV7463
 HV7463                          STATION DESCRIPTION
 HV7463
 HV7463'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7463'RM 1 TO RM 2 OBSTRUCTED.
 HV7463'
 HV7463'THE STATION IS ABOUT 2-1/2 MILES SOUTH OF WEST BOWIE, 1-3/4 MILES
 HV7463'EAST OF GLENDALE HEIGHTS AND 0.05 MILE NORTH OF STATE HIGHWAY
 HV7463'450, ON A SMALL KNOLL AND NEAR THE HILLMEADE LOOKOUT TOWER.
 HV7463'
 HV7463'TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY 495
 HV7463'AND STATE HIGHWAY 450, GO EASTERLY ON HIGHWAY 450 FOR 2.7 MILES
 HV7463'TO THE JUNCTION WITH STATE HIGHWAY 704.  CONTINUE EASTERLY ON
 HV7463'HIGHWAY 450 FOR 2.35 MILES TO THE JUNCTION WITH HILLMEADE
 HV7463'ROAD.  TURN LEFT AND GO NORTH ON HILLMEADE ROAD FOR 0.05 MILE TO
 HV7463'A LOOKOUT TOWER AND THE STATION ON THE RIGHT.  TO REACH THE
 HV7463'AZIMUTH MARK FROM THIS POINT, CONTINUE NORTH ON HILLMEADE ROAD
 HV7463'FOR 0.5 MILE TO A GRAVELED ROAD RIGHT.  TURN RIGHT AND GO
 HV7463'EAST ON GRAVELED ROAD FOR 0.2 MILE TO THE MARK ON THE RIGHT.
 HV7463'
 HV7463'STATION MARK IS A STANDARD DISK, STAMPED HILLMEADE 1970, SET
 HV7463'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7463'PROJECTS 1 INCH ABOUT THE GROUND.  IT IS 69.6 FEET EAST OF THE
 HV7463'CENTERLINE OF HILLMEADE ROAD, 33.8 FEET NORTH-NORTHEAST OF THE
 HV7463'NORTHEAST CORNER OF A FENCE AROUND THE LOOKOUT TOWER, 15.0 FEET
 HV7463'NORTHEAST OF THE CENTERLINE OF A DRIVEWAY AND 13.1 FEET
 HV7463'SOUTHEAST OF THE SOUTHEAST CORNER OF A SMALL CONCRETE BUILDING.
 HV7463'THE UNDERGROUND MARK IS 42 INCHES BELOW THE GROUND
 HV7463'SURFACE.
 HV7463'
 HV7463'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED HILLMEADE NO 1 1970,
 HV7463'SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7463'PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 26.8 FEET NORTHWEST OF
 HV7463'A CONCRETE ANCHOR FOR THE SOUTHEAST GUY WIRE FOR THE LOOKOUT
 HV7463'TOWER, 8.0 FEET WEST OF THE CENTERLINE OF THE DRIVEWAY, 7.0 FEET
 HV7463'SOUTH OF THE SOUTHEAST CORNER OF THE FENCE AROUND THE LOOKOUT
 HV7463'TOWER AND ABOUT 3 FEET LOWER THAN THE STATION.
 HV7463'
 HV7463'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED HILLMEADE NO 2 1970,
 HV7463'CEMENTED IN A CONCRETE SIDEWALK LEADING TO THE LOOKOUT TOWER.  IT
 HV7463'IS 17.2 FEET SOUTH OF THE NORTH END OF THE SIDEWALK, 9.8 FEET
 HV7463'NORTHEAST OF THE NORTHWEST CORNER OF THE FENCE AROUND THE LOOKOUT
 HV7463'TOWER, 7.8 FEET NORTH OF THE GATE TO THE LOOKOUT TOWER AND ABOUT
 HV7463'2 FEET HIGHER THAN THE STATION.
 HV7463'
 HV7463'AZIMUTH MARK IS A STANDARD DISK, STAMPED HILLMEADE 1970, SET
 HV7463'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7463'IS FLUSH WITH THE GROUND SURFACE.  IT IS 10.0 FEET SOUTH OF THE
 HV7463'CENTERLINE OF THE GRAVELED DRIVEWAY, 1.9 FEET WEST-NORTHWEST OF
 HV7463'A WITNESS POST AND 1.0 FEET NORTH OF A FENCE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6775 ***********************************************************************
 JV6775  DESIGNATION -  HILLNDALE
 JV6775  PID         -  JV6775
 JV6775  STATE/COUNTY-  MD/HARFORD
 JV6775  COUNTRY     -  US
 JV6775  USGS QUAD   -  BEL AIR (2016)
 JV6775
 JV6775                         *CURRENT SURVEY CONTROL
 JV6775  ______________________________________________________________________
 JV6775* NAD 83(2011) POSITION- 39 35 45.01465(N) 076 20 43.35159(W)   ADJUSTED
 JV6775* NAD 83(2011) ELLIP HT-    98.967 (meters)        (06/27/12)   ADJUSTED
 JV6775* NAD 83(2011) EPOCH   -  2010.00
 JV6775* NAVD 88 ORTHO HEIGHT -   131.7   (meters)      432.    (feet) GPS OBS
 JV6775  ______________________________________________________________________
 JV6775  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6775  GEOID HEIGHT    -        -33.020 (meters)                     GEOID93
 JV6775  GEOID HEIGHT    -        -32.710 (meters)                     GEOID18
 JV6775  NAD 83(2011) X  -  1,161,813.559 (meters)                     COMP
 JV6775  NAD 83(2011) Y  - -4,782,407.528 (meters)                     COMP
 JV6775  NAD 83(2011) Z  -  4,043,571.358 (meters)                     COMP
 JV6775  LAPLACE CORR    -         -2.13  (seconds)                    DEFLEC18
 JV6775
 JV6775  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6775  Standards:
 JV6775         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6775            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6775  -------------------------------------------------------------------
 JV6775  NETWORK    1.37   2.78           0.64   0.42   1.42      0.31083845
 JV6775  -------------------------------------------------------------------
 JV6775  Click here for local accuracies and other accuracy information.
 JV6775
 JV6775.The horizontal coordinates were established by GPS observations
 JV6775.and adjusted by the National Geodetic Survey in June 2012.
 JV6775
 JV6775.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6775.been affixed to the stable North American tectonic plate. See 
 JV6775.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6775
 JV6775.The horizontal coordinates are valid at the epoch date displayed above
 JV6775.which is a decimal equivalence of Year/Month/Day.
 JV6775
 JV6775.The orthometric height was determined by GPS observations and a
 JV6775.high-resolution geoid model.
 JV6775
 JV6775.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6775.GEOID18 height accuracy estimate available here.
 JV6775
 JV6775.Click photographs - Photos may exist for this station.
 JV6775
 JV6775.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6775
 JV6775.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6775
 JV6775.The ellipsoidal height was determined by GPS observations
 JV6775.and is referenced to NAD 83.
 JV6775
 JV6775. The following values were computed from the NAD 83(2011) position.
 JV6775
 JV6775;                    North         East     Units Scale Factor Converg.
 JV6775;SPC MD       -   214,357.162   456,230.225   MT  1.00002877   +0 24 39.1
 JV6775;SPC MD       -   703,270.12  1,496,815.33   sFT  1.00002877   +0 24 39.1
 JV6775;UTM  18      - 4,383,765.203   384,482.953   MT  0.99976429   -0 51 27.3
 JV6775
 JV6775!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6775!SPC MD       -   0.99998447  x   1.00002877  =   1.00001324
 JV6775!UTM  18      -   0.99998447  x   0.99976429  =   0.99974877
 JV6775
 JV6775_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8448283765(NAD 83)
 JV6775
 JV6775                          SUPERSEDED SURVEY CONTROL
 JV6775
 JV6775  NAD 83(2007)-  39 35 45.01484(N)    076 20 43.35236(W) AD(2002.00) 0
 JV6775  ELLIP H (02/10/07)   98.986  (m)                       GP(2002.00)    
 JV6775  ELLIP H (08/30/02)   98.996  (m)                       GP(       ) 4 2
 JV6775  NAD 83(1991)-  39 35 45.01467(N)    076 20 43.35210(W) AD(       ) 1
 JV6775  ELLIP H (01/27/92)   99.011  (m)                       GP(       ) 4 1
 JV6775  NAD 83(1986)-  39 35 45.00784(N)    076 20 43.35885(W) AD(       ) 1
 JV6775  NGVD 29 (06/18/91)  132.0    (m)  UNKNOWN  model used  GPS OBS        
 JV6775
 JV6775.Superseded values are not recommended for survey control.
 JV6775
 JV6775.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6775.See file dsdata.pdf to determine how the superseded data were derived.
 JV6775
 JV6775_MARKER: DD = SURVEY DISK
 JV6775_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6775_STAMPING: 56 HILLNDALE 1989
 JV6775_MARK LOGO: MD-025
 JV6775_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6775_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6775+STABILITY: SURFACE MOTION
 JV6775_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6775+SATELLITE: SATELLITE OBSERVATIONS - June 12, 2009
 JV6775
 JV6775  HISTORY     - Date     Condition        Report By
 JV6775  HISTORY     - 1989     MONUMENTED       RDA
 JV6775  HISTORY     - 19931209 GOOD             GEOMET
 JV6775  HISTORY     - 20090612 GOOD             MDSHA
 JV6775
 JV6775                          STATION DESCRIPTION
 JV6775
 JV6775'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6775'THE STATION IS LOCATED IN NORTHERN HARFORD COUNTY, MARYLAND ABOUT 1
 JV6775'MILE NORTH OF THE VILLAGE OF HICKORY.
 JV6775'TO REACH THE STATION FROM THE INTERSECTION OF FEDERAL HIGHWAY 1 AND
 JV6775'STATE HIGHWAY 543 PROCEED NORTH ALONG HIGHWAY 543 1.12 MILES TO
 JV6775'PRIVATE DRIVEWAY AND STATION ON THE RIGHT SIDE OF THE ROAD.
 JV6775'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6775'ABOUT 1 INCH BELOW GROUND STAMPED 56 HILLNDALE 1989.  THE STATION IS
 JV6775'19.7 FEET SOUTHEAST OF THE CENTERLINE OF HIGHWAY 543, 37.5 FEET
 JV6775'NORTHEAST OF C AND P OF MARYLAND POLE NUMBER 30, AND 36.6 FEET
 JV6775'SOUTHWEST OF GRAVEL PRIVATE DRIVEWAY WITH NO NUMBER.
 JV6775
 JV6775                          STATION RECOVERY (1993)
 JV6775
 JV6775'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6775'RECOVERED IN GOOD CONDITION.
 JV6775
 JV6775                          STATION RECOVERY (2009)
 JV6775
 JV6775'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (SJB)
 JV6775'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5639 ***********************************************************************
 JV5639  DESIGNATION -  HILLTOP
 JV5639  PID         -  JV5639
 JV5639  STATE/COUNTY-  MD/BALTIMORE
 JV5639  COUNTRY     -  US
 JV5639  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5639
 JV5639                         *CURRENT SURVEY CONTROL
 JV5639  ______________________________________________________________________
 JV5639* NAD 83(1991) POSITION- 39 18 13.88015(N) 076 43 24.50105(W)   ADJUSTED
 JV5639* NAVD 88 ORTHO HEIGHT -   131.    (meters)      430.    (feet) SCALED
 JV5639  ______________________________________________________________________
 JV5639  GEOID HEIGHT    -        -32.343 (meters)                     GEOID18
 JV5639  LAPLACE CORR    -         -5.76  (seconds)                    DEFLEC18
 JV5639  HORZ ORDER      -  SECOND
 JV5639
 JV5639.The horizontal coordinates were established by classical geodetic methods
 JV5639.and adjusted by the National Geodetic Survey in January 1992.
 JV5639
 JV5639.The orthometric height was scaled from a topographic map.
 JV5639
 JV5639.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5639.GEOID18 height accuracy estimate available here.
 JV5639
 JV5639.Click photographs - Photos may exist for this station.
 JV5639
 JV5639.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5639
 JV5639. The following values were computed from the NAD 83(1991) position.
 JV5639
 JV5639;                    North         East     Units Scale Factor Converg.
 JV5639;SPC MD       -   181,774.628   423,851.219   MT  0.99997770   +0 10 24.8
 JV5639;SPC MD       -   596,372.26  1,390,585.21   sFT  0.99997770   +0 10 24.8
 JV5639;UTM  18      - 4,351,912.607   351,397.427   MT  0.99987190   -1 05 30.9
 JV5639
 JV5639!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5639!SPC MD       -   0.99998456  x   0.99997770  =   0.99996226
 JV5639!UTM  18      -   0.99998456  x   0.99987190  =   0.99985646
 JV5639
 JV5639:                Primary Azimuth Mark                     Grid Az
 JV5639:SPC MD       -  HILLTOP AZ MK                            226 02 28.1
 JV5639:UTM  18      -  HILLTOP AZ MK                            227 18 23.8
 JV5639
 JV5639_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5139751912(NAD 83)
 JV5639
 JV5639|---------------------------------------------------------------------|
 JV5639| PID    Reference Object                     Distance      Geod. Az  |
 JV5639|                                                           dddmmss.s |
 JV5639| CA9523 HILLTOP RM 1                         24.918 METERS 05700     |
 JV5639| JV5623 BALTIMORE WESLEY MEM METH CH        APPROX. 1.5 KM 1881000.7 |
 JV5639| JV5619 CATONSVILLE BALTIMORE MUN TANK      APPROX. 2.1 KM 2035617.0 |
 JV5639| CA9522 HILLTOP AZ MK                                      2261252.9 |
 JV5639| CA9524 HILLTOP RM 2                         20.470 METERS 32830     |
 JV5639|---------------------------------------------------------------------|
 JV5639
 JV5639                          SUPERSEDED SURVEY CONTROL
 JV5639
 JV5639  NAD 83(1986)-  39 18 13.87717(N)    076 43 24.50944(W) AD(       ) 2
 JV5639  NAD 27      -  39 18 13.49400(N)    076 43 25.61000(W) AD(       ) 2
 JV5639
 JV5639.Superseded values are not recommended for survey control.
 JV5639
 JV5639.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5639.See file dsdata.pdf to determine how the superseded data were derived.
 JV5639
 JV5639_MARKER: DS = TRIANGULATION STATION DISK
 JV5639_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5639_STAMPING: HILLTOP 1957
 JV5639_MARK LOGO: CGS
 JV5639_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5639+STABILITY: SURFACE MOTION
 JV5639
 JV5639  HISTORY     - Date     Condition        Report By
 JV5639  HISTORY     - 1957     MONUMENTED       CGS
 JV5639  HISTORY     - 1960     SEE DESCRIPTION  MDDT
 JV5639  HISTORY     - 20030921 MARK NOT FOUND   USPSQD
 JV5639
 JV5639                          STATION DESCRIPTION
 JV5639
 JV5639'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV5639'THE STATION IS LOCATED ABOUT 5-1/2 MILES WEST OF THE CENTER OF
 JV5639'BALTIMORE, ABOUT 5 MILES NORTHEAST OF ELLICOTT CITY AND IS IN THE
 JV5639'CATONSVILLE MANOR DEVELOPMENT.  IT IS 54 FEET SOUTH OF DRIVEWAY AND
 JV5639'10 FEET EAST OF FENCE LINE.  THE MARK PROJECTS ABOUT 2 INCHES AND
 JV5639'THE DISK IS STAMPED HILLTOP 1957.
 JV5639'
 JV5639'REFERENCE MARK NO. 1 IS 13 FEET SOUTHWEST OF THE SOUTHEAST CORNER
 JV5639'OF SMALL METAL BUILDING AND 1-1/2 FEET WEST OF UTILITY POLE.  THE
 JV5639'MARK IS SET FLUSH WITH THE SURFACE OF GROUND AND THE DISK IS
 JV5639'STAMPED HILLTOP NO 1 1957.
 JV5639'
 JV5639'REFERENCE MARK NO. 2 IS 18 FEET EAST OF FENCE LINE AND 9 FEET
 JV5639'NORTH OF DRIVEWAY.  THE MARK IS SET FLUSH WITH THE SURFACE OF THE
 JV5639'GROUND AND THE DISK IS STAMPED HILLTOP NO 2 1957.
 JV5639'
 JV5639'AZIMUTH MARK IS 14 FEET SOUTH OF APPROXIMATE CENTER LINE OF ROAD,
 JV5639'7 FEET NORTH OF HEDGE ROW AND 6-1/2 FEET SOUTHEAST OF ELM TREE.  THE
 JV5639'MARK PROJECTS ABOUT 6 INCHES AND THE DISK IS STAMPED HILLTOP 1957.
 JV5639'
 JV5639'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV5639'ROLLING ROAD, (ABOUT 3-1/2 MILES WEST OF THE BALTIMORE CITY LIMITS)
 JV5639'GO EAST ON U.S. HIGHWAY 40 FOR 1.2 MILES TO STOP LIGHT AT INGLESIDE
 JV5639'AVENUE, TURN LEFT AND GO NORTH ON INGLESIDE AVENUE FOR 0.3 MILE,
 JV5639'JOG LEFT FOR 0.05 MILE, THEN RIGHT AND GO NORTHEAST ON INGLESIDE
 JV5639'AVENUE FOR 0.8 MILE TO FRANKLIN AVENUE.  TURN LEFT ON FRANKLIN
 JV5639'AVENUE AND GO FOR 0.15 MILE TO HILLTOP AVENUE, TURN RIGHT ON
 JV5639'HILLTOP AVENUE AND GO FOR 0.15 MILE TO A 5 WAY INTERSECTION.  TURN
 JV5639'RIGHT FOR 0.05 MILE TO THE STATION IN YARD AS DESCRIBED.
 JV5639'
 JV5639'TO REACH THE AZIMUTH MARK FROM THE STATION GO SOUTHWEST ON DIRT
 JV5639'ROAD FOR 0.1 MILE TO PAVED STREET, CONTINUE STRAIGHT AHEAD ON PAVED
 JV5639'STREET FOR 0.1 MILE TO THE MARK ON THE LEFT AS DESCRIBED.
 JV5639'
 JV5639'A SMALL AMOUNT OF CLEARING IS NECESSARY TO MAKE AZIMUTH MARK VG.
 JV5639'
 JV5639'HEIGHT OF LIGHT ABOVE STATION MARK 27 METERS.
 JV5639
 JV5639                          STATION RECOVERY (1960)
 JV5639
 JV5639'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 JV5639'STATION AND ALL MARKS WERE RECOVERED AS DESCRIBED AND FOUND TO BE
 JV5639'IN GOOD CONDITION.  PENDING HIGHWAY CONSTRUCTION MADE IT NECESSARY
 JV5639'TO ESTABLISH HILLTOP 2 1960 AND TWO NEW REFERENCE MARKS AND DESTROY
 JV5639'STATION HILLTOP 1957 AND REFERENCE MARKS NO. 1 AND NO. 2.  AZIMUTH
 JV5639'MARK REMAINS UNDISTURBED.
 JV5639'
 JV5639'HILLTOP 2 1960 IS SET ON THE LINE BETWEEN HILLTOP 1957 AND ITS
 JV5639'AZIMUTH MARK, 125.86 FEET AT 80 DEG FAHRENHEIT, FROM THE STATION.
 JV5639
 JV5639                          STATION RECOVERY (2003)
 JV5639
 JV5639'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5639'THE STATION, REFERENCE MARKS 1 AND 2 WERE NOT FOUND.
 JV5639'THE AZIMUTH MARK WAS FOUND IN GOOD CONDITION.  ADD--IT IS 96.5 FEET
 JV5639'EAST OF THE CENTERLINE OF CECIL AVENUE, 15 FEET SOUTH OF THE
 JV5639'CENTERLINE OF KENT AVENUE, 10.6 FEET WEST OF THE DRIVEWAY TO --1421
 JV5639'KENT AVENUE-- AND 8 FEET NORTH OF A WOOD FENCE.  NOTE--THE CONCRETE
 JV5639'POST IS CHIPPED ON THE CORNERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5638 ***********************************************************************
 JV5638  DESIGNATION -  HILLTOP 2
 JV5638  PID         -  JV5638
 JV5638  STATE/COUNTY-  MD/BALTIMORE
 JV5638  COUNTRY     -  US
 JV5638  USGS QUAD   -  BALTIMORE WEST (2016)
 JV5638
 JV5638                         *CURRENT SURVEY CONTROL
 JV5638  ______________________________________________________________________
 JV5638* NAD 83(1991) POSITION- 39 18 13.01932(N) 076 43 25.65705(W)   NO CHECK
 JV5638* NAVD 88 ORTHO HEIGHT -   131.    (meters)      430.    (feet) SCALED
 JV5638  ______________________________________________________________________
 JV5638  GEOID HEIGHT    -        -32.342 (meters)                     GEOID18
 JV5638  LAPLACE CORR    -         -5.75  (seconds)                    DEFLEC18
 JV5638  HORZ ORDER      -  THIRD
 JV5638
 JV5638.The horizontal coordinates were established by classical geodetic methods
 JV5638.and adjusted by the National Geodetic Survey in January 1992.
 JV5638
 JV5638.No horizontal observational check was made to the station.
 JV5638
 JV5638.The orthometric height was scaled from a topographic map.
 JV5638
 JV5638.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5638.GEOID18 height accuracy estimate available here.
 JV5638
 JV5638.Click photographs - Photos may exist for this station.
 JV5638
 JV5638.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5638
 JV5638. The following values were computed from the NAD 83(1991) position.
 JV5638
 JV5638;                    North         East     Units Scale Factor Converg.
 JV5638;SPC MD       -   181,747.997   423,823.603   MT  0.99997767   +0 10 24.1
 JV5638;SPC MD       -   596,284.89  1,390,494.60   sFT  0.99997767   +0 10 24.1
 JV5638;UTM  18      - 4,351,886.596   351,369.233   MT  0.99987200   -1 05 31.6
 JV5638
 JV5638!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5638!SPC MD       -   0.99998456  x   0.99997767  =   0.99996223
 JV5638!UTM  18      -   0.99998456  x   0.99987200  =   0.99985656
 JV5638
 JV5638:                Primary Azimuth Mark                     Grid Az
 JV5638:SPC MD       -  HILLTOP AZ MK                            226 02 27.9
 JV5638:UTM  18      -  HILLTOP AZ MK                            227 18 23.6
 JV5638
 JV5638_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5136951886(NAD 83)
 JV5638
 JV5638|---------------------------------------------------------------------|
 JV5638| PID    Reference Object                     Distance      Geod. Az  |
 JV5638|                                                           dddmmss.s |
 JV5638| JV5639 HILLTOP                              38.365 METERS 04613     |
 JV5638| CA9525 HILLTOP 2 RM 3                       15.563 METERS 20609     |
 JV5638| CA9522 HILLTOP AZ MK                                      2261252.0 |
 JV5638| CA9526 HILLTOP 2 RM 4                       13.954 METERS 32137     |
 JV5638|---------------------------------------------------------------------|
 JV5638
 JV5638                          SUPERSEDED SURVEY CONTROL
 JV5638
 JV5638  NAD 83(1986)-  39 18 13.01636(N)    076 43 25.66543(W) AD(       ) 3
 JV5638  NAD 27      -  39 18 12.63320(N)    076 43 26.76600(W) AD(       ) 3
 JV5638
 JV5638.Superseded values are not recommended for survey control.
 JV5638
 JV5638.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5638.See file dsdata.pdf to determine how the superseded data were derived.
 JV5638
 JV5638_MARKER: DS = TRIANGULATION STATION DISK
 JV5638_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5638_STAMPING: HILLTOP 2 1960
 JV5638_MARK LOGO: CGS
 JV5638_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5638+STABILITY: SURFACE MOTION
 JV5638
 JV5638  HISTORY     - Date     Condition        Report By
 JV5638  HISTORY     - 1960     MONUMENTED       MDDT
 JV5638  HISTORY     - 20030921 MARK NOT FOUND   USPSQD
 JV5638
 JV5638                          STATION DESCRIPTION
 JV5638
 JV5638'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 JV5638'STATION IS LOCATED ABOUT 6 MILES WEST OF THE CENTER OF BALTIMORE
 JV5638'CITY, 5 MILES NORTHEAST OF ELLICOTT CITY, AT THE INTERSECTION OF
 JV5638'HILLTOP ROAD AND A DIRT ROAD LEADING WESTERLY TO KENT AVENUE.  IT
 JV5638'IS 35 FEET NORTHEAST OF G AND E GUY POLE NO. 14 AND 14.3 FEET
 JV5638'NORTH OF A SASSAFRASS TREE.  MARK PROJECTS 3 INCHES AND THE DISK
 JV5638'IS STAMPED HILLTOP 2 1960.
 JV5638'
 JV5638'REFERENCE MARK NO. 3 IS 26.5 FEET WEST OF THE CENTERLINE OF HILLTOP
 JV5638'ROAD, 15.5 FEET WEST OF GUY POLE NO. 201993 AND 18 FEET SOUTH OF THE
 JV5638'CENTER OF THE DIRT ROAD.  THE MARK PROJECTS 6 INCHES AND THE DISK
 JV5638'IS STAMPED HILLTOP 2 NO 3 1957 - 1960.
 JV5638'
 JV5638'REFERENCE MARK NO. 4 IS 69.5 FEET NORTH OF GUY POLE NO. 201993,
 JV5638'60.2 FEET NORTH OF G AND E CO. POLE NO. 14, 26 FEET EAST OF THE
 JV5638'CENTERLINE OF HILLTOP ROAD, PROJECTED 53 FEET NORTH OF INTERSECTION
 JV5638'CENTERLINE OF HILLTOP ROAD AND DIRT ROAD.  MARK PROJECTS 5 INCHES
 JV5638'AND THE DISK IS STAMPED HILLTOP 2 NO 4 1957 - 1960.
 JV5638'
 JV5638'AZIMUTH MARK IS LOCATED AT THE INTERSECTION OF CECIL AVENUE AND
 JV5638'KENT AVENUE, 96.5 FEET EAST OF THE CENTERLINE OF CECIL AVENUE, 15
 JV5638'FEET SOUTH OF THE CENTERLINE OF KENT AVENUE AND 6 FEET EAST OF AN
 JV5638'ELM TREE.  MARK PROJECTS 3 INCHES AND THE DISK IS STAMPED HILLTOP
 JV5638'1957.
 JV5638'
 JV5638'TO REACH THE STATION FROM THE OVERPASS AT U.S. HIGHWAY NO. 40 AND
 JV5638'THE BALTIMORE BELTWAY GO EAST ON HIGHWAY 40 FOR 0.35 MILE TO
 JV5638'INGLESIDE AVENUE ON THE LEFT, TURN LEFT AND GO 0.9 MILE TO CECIL
 JV5638'AVENUE ON THE LEFT, THENCE LEFT FOR 0.3 MILE TO CROSSROADS AT
 JV5638'CECIL AVENUE AND KENT AVENUE AND AZIMUTH MARK AS DESCRIBED, THEN
 JV5638'TURN RIGHT ON KENT AVENUE AND GO 0.1 MILE TO Y-INTERSECTION
 JV5638'WITH A DIRT ROAD, THENCE STRAIGHT AHEAD ON DIRT ROAD FOR 0.1 MILE
 JV5638'TO THE T-INTERSECTION AT HILLTOP ROAD AND THE STATION AS
 JV5638'DESCRIBED.
 JV5638
 JV5638                          STATION RECOVERY (2003)
 JV5638
 JV5638'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV5638'THE STATION, REFERENCE MARKS 3 AND 4 WERE NOT FOUND.  NOTE--THE AREA
 JV5638'DESCRIBED HAS BEEN FILLED IN FOR A NEW HOUSING DEVELOPMENT.  THE
 JV5638'FORMER OWNER OF THE LAND DOES BELIEVE THE STATION IS PROBABLY STILL
 JV5638'PRESENT, BUT WAS NOT FOUND.  POWER POLES HAVE BEEN REPLACED AND/OR
 JV5638'RENUMBERED. THE DESCRIBED GRAVEL ROAD IS NOW PAVED AND INTERSECTS WITH
 JV5638'HILLTOP AVENUE.
 JV5638'REFERENCE MARK 3 IF PRESENT IS BURIED IN A FLOWER GARDEN.
 JV5638'REFERENCE MARK 4 IS IN AN AREA FILLED IN WITH SOIL.
 JV5638'THE AZIMUTH MARK WAS FOUND IN GOOD CONDITION AS DESCRIBED.  ADD--IT IS
 JV5638'10.6 FEET WEST OF THE DRIVEWAY TO --1421 KENT AVENUE-- AND 8 FEET
 JV5638'NORTH OF A WOOD FENCE.  THE CONCRETE POST IS CHIPPED ON THE CORNERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5323 ***********************************************************************
 HV5323  DESIGNATION -  HILLTOP LOT
 HV5323  PID         -  HV5323
 HV5323  STATE/COUNTY-  MD/CHARLES
 HV5323  COUNTRY     -  US
 HV5323  USGS QUAD   -  MATHIAS POINT (2019)
 HV5323
 HV5323                         *CURRENT SURVEY CONTROL
 HV5323  ______________________________________________________________________
 HV5323* NAD 83(1991) POSITION- 38 29 28.37458(N) 077 06 01.14917(W)   ADJUSTED
 HV5323  ______________________________________________________________________
 HV5323  GEOID HEIGHT    -        -32.823 (meters)                     GEOID18
 HV5323  LAPLACE CORR    -         -4.52  (seconds)                    DEFLEC18
 HV5323  HORZ ORDER      -  THIRD
 HV5323
 HV5323.The horizontal coordinates were established by classical geodetic methods
 HV5323.and adjusted by the National Geodetic Survey in January 1992.
 HV5323
 HV5323.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5323.GEOID18 height accuracy estimate available here.
 HV5323
 HV5323.Click photographs - Photos may exist for this station.
 HV5323
 HV5323.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5323
 HV5323. The following values were computed from the NAD 83(1991) position.
 HV5323
 HV5323;                    North         East     Units Scale Factor Converg.
 HV5323;SPC MD       -    91,532.993   391,248.059   MT  0.99997224   -0 03 46.7
 HV5323;SPC MD       -   300,304.49  1,283,619.67   sFT  0.99997224   -0 03 46.7
 HV5323;UTM  18      - 4,262,408.780   316,825.052   MT  1.00001322   -1 18 27.3
 HV5323
 HV5323_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1682562408(NAD 83)
 HV5323
 HV5323                          SUPERSEDED SURVEY CONTROL
 HV5323
 HV5323  NAD 83(1986)-  38 29 28.37465(N)    077 06 01.16317(W) AD(       ) 3
 HV5323  NAD 27      -  38 29 27.93666(N)    077 06 02.25378(W) AD(       ) 3
 HV5323
 HV5323.Superseded values are not recommended for survey control.
 HV5323
 HV5323.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5323.See file dsdata.pdf to determine how the superseded data were derived.
 HV5323
 HV5323_MARKER: 57 = LOOKOUT TOWER
 HV5323
 HV5323  HISTORY     - Date     Condition        Report By
 HV5323  HISTORY     - 1957     FIRST OBSERVED   CGS
 HV5323
 HV5323                          STATION DESCRIPTION
 HV5323
 HV5323'NO DESCRIPTIVE TEXT AVAILABLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5402 ***********************************************************************
 HV5402  DESIGNATION -  HILLTOP RESET
 HV5402  PID         -  HV5402
 HV5402  STATE/COUNTY-  MD/CHARLES
 HV5402  COUNTRY     -  US
 HV5402  USGS QUAD   -  MATHIAS POINT (2019)
 HV5402
 HV5402                         *CURRENT SURVEY CONTROL
 HV5402  ______________________________________________________________________
 HV5402* NAD 83(2011) POSITION- 38 29 12.22926(N) 077 07 30.94793(W)   ADJUSTED
 HV5402* NAD 83(2011) ELLIP HT-     8.277 (meters)        (06/27/12)   ADJUSTED
 HV5402* NAD 83(2011) EPOCH   -  2010.00
 HV5402* NAVD 88 ORTHO HEIGHT -    41.174 (meters)      135.09  (feet) ADJUSTED
 HV5402  ______________________________________________________________________
 HV5402  GEOID HEIGHT    -        -32.780 (meters)                     GEOID18
 HV5402  NAD 83(2011) X  -  1,113,877.017 (meters)                     COMP
 HV5402  NAD 83(2011) Y  - -4,873,315.661 (meters)                     COMP
 HV5402  NAD 83(2011) Z  -  3,947,881.651 (meters)                     COMP
 HV5402  LAPLACE CORR    -         -3.76  (seconds)                    DEFLEC18
 HV5402  DYNAMIC HEIGHT  -         41.150 (meters)      135.01  (feet) COMP
 HV5402  MODELED GRAVITY -    980,042.7   (mgal)                       NAVD 88
 HV5402
 HV5402  VERT ORDER      -  FIRST     CLASS II
 HV5402
 HV5402  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV5402  Standards:
 HV5402         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV5402            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV5402  -------------------------------------------------------------------
 HV5402  NETWORK    1.29   3.35           0.62   0.37   1.71     -0.07978950
 HV5402  -------------------------------------------------------------------
 HV5402  Click here for local accuracies and other accuracy information.
 HV5402
 HV5402.The horizontal coordinates were established by GPS observations
 HV5402.and adjusted by the National Geodetic Survey in June 2012.
 HV5402
 HV5402.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV5402.been affixed to the stable North American tectonic plate. See 
 HV5402.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV5402
 HV5402.The horizontal coordinates are valid at the epoch date displayed above
 HV5402.which is a decimal equivalence of Year/Month/Day.
 HV5402
 HV5402.The orthometric height was determined by differential leveling and
 HV5402.adjusted by the NATIONAL GEODETIC SURVEY
 HV5402.in June 1991.
 HV5402
 HV5402.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5402.GEOID18 height accuracy estimate available here.
 HV5402
 HV5402.Click photographs - Photos may exist for this station.
 HV5402
 HV5402.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV5402
 HV5402.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5402
 HV5402.The ellipsoidal height was determined by GPS observations
 HV5402.and is referenced to NAD 83.
 HV5402
 HV5402.The dynamic height is computed by dividing the NAVD 88
 HV5402.geopotential number by the normal gravity value computed on the
 HV5402.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV5402.degrees latitude (g = 980.6199 gals.).
 HV5402
 HV5402.The modeled gravity was interpolated from observed gravity values.
 HV5402
 HV5402. The following values were computed from the NAD 83(2011) position.
 HV5402
 HV5402;                    North         East     Units Scale Factor Converg.
 HV5402;SPC MD       -    91,037.856   389,071.231   MT  0.99997277   -0 04 43.0
 HV5402;SPC MD       -   298,680.03  1,276,477.86   sFT  0.99997277   -0 04 43.0
 HV5402;UTM  18      - 4,261,961.018   314,637.884   MT  1.00002315   -1 19 22.8
 HV5402
 HV5402!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5402!SPC MD       -   0.99999870  x   0.99997277  =   0.99997147
 HV5402!UTM  18      -   0.99999870  x   1.00002315  =   1.00002185
 HV5402
 HV5402:                Primary Azimuth Mark                     Grid Az
 HV5402:SPC MD       -  HILLTOP AZ MK 2                          043 18 04.7
 HV5402:UTM  18      -  HILLTOP AZ MK 2                          044 32 44.5
 HV5402
 HV5402_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1463761961(NAD 83)
 HV5402
 HV5402|---------------------------------------------------------------------|
 HV5402| PID    Reference Object                     Distance      Geod. Az  |
 HV5402|                                                           dddmmss.s |
 HV5402| DC6354 HILLTOP AZ MK 2                                    0431321.7 |
 HV5402| HV5323 HILLTOP LOT                         APPROX. 2.2 KM 0770628.7 |
 HV5402| DC6355 HILLTOP RM 1 AZIMUTH                               0863449.3 |
 HV5402| DC6358 HILLTOP RM 4                         49.590 METERS 12847     |
 HV5402| HV5316 MATHIAS POINT SHOAL LIGHTHOUSE      APPROX.11.6 KM 1412921.6 |
 HV5402| HV5394 RICHMOND WASH AIRWAY BEACON 52      APPROX.18.4 KM 1941739.0 |
 HV5402| DC6356 HILLTOP RM 2                         40.706 METERS 27000     |
 HV5402| HV5075 QUANTICO EAST CHECKERED TANK        APPROX.16.4 KM 2852614.7 |
 HV5402| DC6357 HILLTOP RM 3                         43.367 METERS 33433     |
 HV5402| HV5015 INDIAN HEAD SHORT STACK             APPROX.12.0 KM 3391135.6 |
 HV5402| HV5009 INDIAN HEAD TALLER STACK            APPROX.12.0 KM 3392532.4 |
 HV5402| HV5014 INDIAN HEAD RED AIRWAY BCN          APPROX.11.8 KM 3400805.9 |
 HV5402|---------------------------------------------------------------------|
 HV5402
 HV5402                          SUPERSEDED SURVEY CONTROL
 HV5402
 HV5402  NAD 83(2007)-  38 29 12.22979(N)    077 07 30.94812(W) AD(2002.00) 0
 HV5402  ELLIP H (02/10/07)    8.375  (m)                       GP(2002.00)    
 HV5402  ELLIP H (09/18/02)    8.363  (m)                       GP(       ) 4 2
 HV5402  NAD 83(1993)-  38 29 12.23005(N)    077 07 30.94810(W) AD(       ) 1
 HV5402  ELLIP H (11/14/94)    8.353  (m)                       GP(       ) 4 2
 HV5402  NAD 83(1991)-  38 29 12.23016(N)    077 07 30.94901(W) AD(       ) 1
 HV5402  ELLIP H (01/27/92)    8.397  (m)                       GP(       ) 4 1
 HV5402  NAD 83(1986)-  38 29 12.23045(N)    077 07 30.96214(W) AD(       ) 1
 HV5402  NAD 27      -  38 29 11.79200(N)    077 07 32.04300(W) AD(       ) 1
 HV5402  NAVD 88              41.17   (m)          135.1    (f) LEVELING    3  
 HV5402  NGVD 29 (07/19/86)   41.     (m)          135.     (f) VERT ANG       
 HV5402
 HV5402.Superseded values are not recommended for survey control.
 HV5402
 HV5402.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5402.See file dsdata.pdf to determine how the superseded data were derived.
 HV5402
 HV5402_MARKER: DS = TRIANGULATION STATION DISK
 HV5402_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5402_STAMPING: HILLTOP 1934
 HV5402_MARK LOGO: CGS
 HV5402_PROJECTION: FLUSH
 HV5402_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV5402_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5402+STABILITY: SURFACE MOTION
 HV5402_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV5402+SATELLITE: SATELLITE OBSERVATIONS - July 10, 2018
 HV5402
 HV5402  HISTORY     - Date     Condition        Report By
 HV5402  HISTORY     - 1956     MONUMENTED       MDDT
 HV5402  HISTORY     - 1956     GOOD             MDDT
 HV5402  HISTORY     - 1959     GOOD             CGS
 HV5402  HISTORY     - 19880601 GOOD             NGS
 HV5402  HISTORY     - 19900331 GOOD             NGS
 HV5402  HISTORY     - 19920411 GOOD             NOS
 HV5402  HISTORY     - 20000808 GOOD             LOCSUR
 HV5402  HISTORY     - 20101002 GOOD             INDIV
 HV5402  HISTORY     - 20180710 GOOD             NGS
 HV5402
 HV5402                          STATION DESCRIPTION
 HV5402
 HV5402'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1956 (MLC)
 HV5402'THE STATION WAS RECOVERED BY THE OLD DESCRIPTION.  THE SURFACE
 HV5402'MARK HAD BEEN RESET BY THE STATE HIGHWAY DEPARTMENT, BUT IT WAS
 HV5402'DUG UP AND RESET FROM THE UNDERGROUND MARK.  REFERENCE MARK 1
 HV5402'COULD NOT BE FOUND.  A NEW AZIMUTH MARK, WHICH WAS SET BY THE
 HV5402'HIGHWAY DEPARTMENT, WAS OBSERVED ON.  THE DIRECTIONS TO THE
 HV5402'REFERENCE MARKS CHECKED WITHIN ONE MINUTE.  SMALL DIFFERENCES
 HV5402'WERE NOTED IN THE DISTANCES TO THE REFERENCE MARKS.  THE LANE
 HV5402'LEADING TO THE BARNYARD MENTIONED IN PREVIOUS NOTES IS NO
 HV5402'LONGER RECOGNIZABLE.  A NEW DESCRIPTION FOLLOWS--
 HV5402'
 HV5402'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 301 AND
 HV5402'STATE HIGHWAY 6 IN LA PLATA, GO W ON STATE HIGHWAY 6 FOR 3.8
 HV5402'MI. TO THE JUNCTION WITH STATE HIGHWAY 484 ON THE RIGHT.  CONTINUE
 HV5402'W AND S ON STATE HIGHWAY 6 FOR 5.35 MI. TO A REVERSE FORK AND
 HV5402'THE LITTLE ZION CHURCH ON THE RIGHT ACROSS A PAVED ROAD, THE
 HV5402'AZIMUTH MARK IS LOCATED AT THE W SIDE OF THIS CHURCH.  BEAR LEFT
 HV5402'AND CONTINUE SW ON STATE HIGHWAY 6 FOR 0.5 MI. TO THE HILLTOP
 HV5402'STORE ON THE RIGHT AND THE STATION ON THE RIGHT JUST AFTER
 HV5402'PASSING THE STORE.
 HV5402'
 HV5402'THE STATION IS 103 FT. S OF THE STORE, 62 FT. NE OF THE SW
 HV5402'CORNER OF A SMALL FRAME BUILDING, AND 32 FT. NW OF THE CENTER OF
 HV5402'STATE HIGHWAY 6.  THE MARK PROJECTS ABOUT 2 IN., AND THE DISK IS
 HV5402'STAMPED HILLTOP 1934 .
 HV5402'
 HV5402'REFERENCE MARK 2 IS 13 FT. NW OF THE CENTER OF A DIRT DRIVEWAY,
 HV5402'AND 7 FT. NE OF THE SE CORNER OF A SMALL IMITATION-BRICK COVERED
 HV5402'HOUSE.  THE MARK PROJECTS ABOUT 2 IN., AND THE DISK IS STAMPED
 HV5402'HILLTOP NO 2 1934.
 HV5402'
 HV5402'REFERENCE MARK 3 IS 27 FT. S OF THE SW CORNER OF THE STORE.  THE
 HV5402'MARK PROJECTS ABOUT 6 IN., AND THE DISK IS STAMPED HILLTOP NO 3
 HV5402'1934.
 HV5402'
 HV5402'THE AZIMUTH MARK IS A STANDARD AZIMUTH-MARK DISK, SET FLUSH IN
 HV5402'A DRILL HOLE IN A CONCRETE PAD, AT THE W SIDE OF THE LITTLE
 HV5402'ZION CHURCH, NEAR THE W ENTRANCE STEPS, 21 FT. S OF THE NW CORNER
 HV5402'OF THE CHURCH, AND 2 FT. W OF THE W SIDE OF THE CHURCH.  THE
 HV5402'DISK IS STAMPED HILLTOP 2 1934.
 HV5402'
 HV5402'REFERENCE MARK 4 WHICH WAS SET BY THE HIGHWAY DEPARTMENT IS A
 HV5402'CONCRETE MONUMENT WITH A BELLED TOP, PROJECTING ABOUT 6 IN. WITH
 HV5402'A STANDARD REFERENCE-MARK DISK IN THE TOP, STAMPED HILLTOP NO 4
 HV5402'1956.
 HV5402'
 HV5402'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 HV5402
 HV5402                          STATION RECOVERY (1956)
 HV5402
 HV5402'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1956
 HV5402'RECOVERED IN GOOD CONDITION.
 HV5402
 HV5402                          STATION RECOVERY (1959)
 HV5402
 HV5402'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (GFW)
 HV5402'RECOVERED AS DESCRIBED BY M.L.C. IN 1956.  ALL DISTANCES AND
 HV5402'ANGLES CHECKED.  THE DESCRIPTION IS ADEQUATE AND CORRECT.
 HV5402
 HV5402                          STATION RECOVERY (1988)
 HV5402
 HV5402'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988
 HV5402'RECOVERED IN GOOD CONDITION.
 HV5402
 HV5402                          STATION RECOVERY (1990)
 HV5402
 HV5402'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV5402'14.7 KM (9.13 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 6 FROM THE
 HV5402'JUNCTION OF U.S. HIGHWAY 301 IN LA PLATA, THENCE 0.3 KM (0.19 MI)
 HV5402'NORTHEASTERLY ALONG HILL TOP ROAD, 31.3 M (102.69 FT) SOUTH OF THE
 HV5402'SOUTH CORNER OF A HOUSE, 28.0 M (91.86 FT) SOUTHWEST OF THE CENTER OF
 HV5402'A DRIVEWAY, 19.0 M (62.34 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF A
 HV5402'BUILDING, 9.9 M (32.48 FT) NORTHWEST OF THE CENTER OF A ROAD, 6.2 M
 HV5402'(20.34 FT) WEST OF UTILITY POLE NUMBER 263 WITH 1 GUY WIRE, 0.6 M
 HV5402'(1.97 FT) ABOVE THE LEVEL OF THE ROAD CENTER, AND IN A CONCRETE
 HV5402'MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HV5402
 HV5402                          STATION RECOVERY (1992)
 HV5402
 HV5402'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 HV5402'STATION IS LOCATED NEAR THE CENTER OF THE VILLAGE OF HILL TOP ON THE
 HV5402'NORTHWEST RIGHT OF WAY OF ANNAPOLIS WOODS ROAD.
 HV5402'TO REACH FROM ZION
 HV5402'CHURCH IN HILL TOP, GO SOUTHWEST ON ANNOPOLIS WOODS ROAD FOR 0.25 MI
 HV5402'(0.40 KM) TO STATION ON RIGHT.
 HV5402'STATION IS MARKED BY A STANDARD C AND
 HV5402'GS TRIANGULATION DISK STAMPED --- HILLTOP 1934--- SET IN A SQUARE
 HV5402'CONCRETE MONUMENT THAT PROJECTS 0.05 M (0.16 FT) .  IT IS 31.36 M
 HV5402'(102.89 FT) SOUTH OF THE SOUTHWEST CORNER OF A TWO STORY YELLOW FRAME
 HV5402'HOUSE, 18.91 M (62.04 FT) EAST OF THE SOUTHEAST CORNER OF A WHITE
 HV5402'FRAME STORAGE SHED, AND 6.13 M (20.11 FT) NORTHWEST OF A GUY POLE, AND
 HV5402'10.08 M (33.07 FT) NORTHNORTHWEST OF THE CENTERLINE OF HIGHWAY.
 HV5402
 HV5402                          STATION RECOVERY (2000)
 HV5402
 HV5402'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 2000 (GJT)
 HV5402'POINT RECOVERED, ANNAPOLIS WOODS ROAD HAS BEEN RELOCATED.  POINT
 HV5402'IS NOW ON HILLTOP ROAD, WEST OF CURRENT LOCATION OF ANNAPOLIS WOODS
 HV5402'ROAD.  WHITE SHED IS GONE.  SURVEY TACK HAS BEEN PLACED ON SIDE OF
 HV5402'POLE.  THIS POINT WAS USED FOR GPS OBSERVATIONS ON AUGUST 7, 2000.
 HV5402
 HV5402                          STATION RECOVERY (2010)
 HV5402
 HV5402'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2010 (WRA)
 HV5402'RECOVERED AS DESCRIBED, DESCRIPTION IS ADEQUATE
 HV5402
 HV5402                          STATION RECOVERY (2018)
 HV5402
 HV5402'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2018 (RWA)
 HV5402'PLEASE CONTACT HOMEOWNER PRIOR TO OCCUPYING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1245 ***********************************************************************
 JW1245  DESIGNATION -  HIPOINT
 JW1245  PID         -  JW1245
 JW1245  STATE/COUNTY-  MD/GARRETT
 JW1245  COUNTRY     -  US
 JW1245  USGS QUAD   -  GRANTSVILLE (2016)
 JW1245
 JW1245                         *CURRENT SURVEY CONTROL
 JW1245  ______________________________________________________________________
 JW1245* NAD 83(1995) POSITION- 39 42 07.51075(N) 079 12 53.34191(W)   ADJUSTED
 JW1245* NAVD 88 ORTHO HEIGHT -   936.68  (+/-2cm)     3073.1   (feet) VERTCON3
 JW1245  ______________________________________________________________________
 JW1245  GEOID HEIGHT    -        -31.446 (meters)                     GEOID18
 JW1245  LAPLACE CORR    -         -0.61  (seconds)                    DEFLEC18
 JW1245  HORZ ORDER      -  FIRST
 JW1245  VERT ORDER      -  THIRD ? (See Below)
 JW1245
 JW1245.The horizontal coordinates were established by classical geodetic methods
 JW1245.and adjusted by the National Geodetic Survey in April 1998.
 JW1245
 JW1245.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1245.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1245
 JW1245.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1245.GEOID18 height accuracy estimate available here.
 JW1245
 JW1245.The vertical order pertains to the NGVD 29 superseded value.
 JW1245
 JW1245.Click photographs - Photos may exist for this station.
 JW1245
 JW1245.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1245
 JW1245. The following values were computed from the NAD 83(1995) position.
 JW1245
 JW1245;                    North         East     Units Scale Factor Converg.
 JW1245;SPC MD       -   228,256.909   210,057.275   MT  1.00005383   -1 23 24.3
 JW1245;SPC MD       -   748,872.88    689,162.91   sFT  1.00005383   -1 23 24.3
 JW1245;UTM  17      - 4,396,215.901   653,047.425   MT  0.99988838   +1 08 26.1
 JW1245
 JW1245!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1245!SPC MD       -   0.99985800  x   1.00005383  =   0.99991183
 JW1245!UTM  17      -   0.99985800  x   0.99988838  =   0.99974640
 JW1245
 JW1245:                Primary Azimuth Mark                     Grid Az
 JW1245:SPC MD       -  FIKE                                     283 02 39.8
 JW1245:UTM  17      -  FIKE                                     280 30 49.4
 JW1245
 JW1245_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD5304796215(NAD 83)
 JW1245
 JW1245|---------------------------------------------------------------------|
 JW1245| PID    Reference Object                     Distance      Geod. Az  |
 JW1245|                                                           dddmmss.s |
 JW1245| JW1244 HIPOINT RM A                         29.188 METERS 02816     |
 JW1245| CX4686 HIPOINT AZ MK                                      0500101.6 |
 JW1245| CX4687 HIPOINT RM 1                         11.280 METERS 14208     |
 JW1245| JW1246 JW1246                               17.051 METERS 21327     |
 JW1245| JW1256 FIKE                                APPROX.24.1 KM 2813915.5 |
 JW1245| CX4688 HIPOINT RM 2                         17.906 METERS 29443     |
 JW1245|---------------------------------------------------------------------|
 JW1245
 JW1245                          SUPERSEDED SURVEY CONTROL
 JW1245
 JW1245  NAD 83(1991)-  39 42 07.51265(N)    079 12 53.34809(W) AD(       ) 1
 JW1245  NAD 83(1986)-  39 42 07.51679(N)    079 12 53.34947(W) AD(       ) 1
 JW1245  NAD 27      -  39 42 07.22755(N)    079 12 54.23898(W) AD(       ) 1
 JW1245  NGVD 29 (07/19/86)  936.78   (m)         3073.4    (f) LEVELING    3  
 JW1245
 JW1245.Superseded values are not recommended for survey control.
 JW1245
 JW1245.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1245.See file dsdata.pdf to determine how the superseded data were derived.
 JW1245
 JW1245_MARKER: DD = SURVEY DISK
 JW1245_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1245_STAMPING: HIPOINT 1968 ARMY MAP SERVICE
 JW1245_MARK LOGO: USACE
 JW1245_MAGNETIC: N = NO MAGNETIC MATERIAL
 JW1245_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1245+STABILITY: SURFACE MOTION
 JW1245
 JW1245  HISTORY     - Date     Condition        Report By
 JW1245  HISTORY     - 1968     MONUMENTED       AMS
 JW1245  HISTORY     - 1975     GOOD             NGS
 JW1245  HISTORY     - 1985     GOOD             NGS
 JW1245
 JW1245                          STATION DESCRIPTION
 JW1245
 JW1245'DESCRIBED BY US ARMY MAP SERVICE (NOW DMA) 1968 (WOK)
 JW1245'THE STATION IS LOCATED ABOUT 4 MILES WEST OF GRANTSVILLE, MARYLAND IN
 JW1245'MARK IS ON THE HIGHEST POINT ON MOUNTAIN IN THE STATE FOREST NEAR THE
 JW1245'MOUNTAIN LOOKOUT TOWER ABOUT 0.3 MILE SOUTH OF U.S. HIGHWAY 40.
 JW1245'
 JW1245'TO REACH THE STATION FROM THE U.S. POST OFFICE IN GRANTSVILLE, GO
 JW1245'WESTERLY ON U.S. HIGHWAY 40 FOR 3.9 MILES TO SUMMIT OF GRADE AND A
 JW1245'SMALL ROADSIDE PARK ON THE LEFT AND ON THE RIGHT IS A SUNOCO SERVICE
 JW1245'STATION AND THE COZY MT. TOP RESTAURANT.  AT THE WEST END OF THE SMALL
 JW1245'ROADSIDE PARK GO LEFT THROUGH A LOCKED POLE GATE AND GO SOUTHERLY
 JW1245'UPHILL ON A GRAVELED STATE FOREST SERVICE ROAD FOR 0.25 MILE TO THE
 JW1245'AZIMUTH MARK IN A BOULDER ON THE RIGHT.  CONTINUE FOR 0.15 MILE TO
 JW1245'SUMMIT OF HILL AND PARKING AREA FOR LOOKOUT TOWER AND THE STATION.
 JW1245'
 JW1245'THE STATION MARK IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED
 JW1245'HIPOINT 1968 ARMY MAP SERVICE AND IS SET IN A SQUARE CONCRETE MONUMENT
 JW1245'FLUSH WITH THE GROUND SURFACE.  IT IS 5 FEET NORTH-NORTHEAST OF THE
 JW1245'NORTHEAST CORNER OF A CLUSTER OF EVERGREENS, 27.2 FEET WEST OF THE
 JW1245'SOUTHEAST CORNER-POST OF A CABLE FENCE, 37 FEET SOUTHWEST OF THE
 JW1245'CENTER OF A 26 INCH OAK TREE AND 34.8 FEET EAST OF THE SOUTHWEST
 JW1245'CORNERPOST OF A CABLE FENCE.
 JW1245'
 JW1245'REFERENCE MARK NO. 1 IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED
 JW1245'HIPOINT RM 1 1968 ARMY MAP SERVICE AND IS SET FLUSH IN THE TOP OF THE
 JW1245'NORTHEAST CONCRETE ANCHOR BLOCK FOR THE FOREST SERVICE LOOKOUT TOWER.
 JW1245'IT IS 9 FEET WEST OF THE CENTER OF A 18 INCH OAK TREE, 11.3 FEET
 JW1245'SOUTHEAST OF THE SOUTHEAST CORNER-POST OF A CABLE FENCE AND 42.7 FEET
 JW1245'EAST OF THE NORTHEAST LEG OF THE LOOKOUT TOWER.
 JW1245'
 JW1245'REFERENCE MARK NO. 2 IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED
 JW1245'HIPOINT RM 2 1968 ARMY MAP SERVICE AND IS SET IN A DRILL HOLE IN
 JW1245'OUTCROPPING BEDROCK.  IT IS 12 FEET SOUTHWEST OF THE CENTER OF A 14
 JW1245'INCH OAK TREE, 18.6 FEET NORTHWEST OF THE EYEBOLT IN THE NORTHWEST
 JW1245'CONCRETE ANCHOR BLOCK FOR THE LOOKOUT TOWER AND 24.3 FEET WEST OF THE
 JW1245'SOUTHWEST CORNER-POST OF A CABLE FENCE.
 JW1245'
 JW1245'THE AZIMUTH MARK IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED
 JW1245'HIPOINT AZ. MK. 1968 ARMY MAP SERVICE AND IS SET IN A DRILL HOLE IN
 JW1245'OUTCROPPING BEDROCK.  IT IS 4.3 FEET SOUTHEAST OF A METAL WITNESS
 JW1245'POST, 13 FEET NORTHWEST OF THE CENTERLINE OF THE STATE FOREST SERVICE
 JW1245'ROAD AND 20 FEET NORTHEAST OF A 14 INCH OAK TREE.
 JW1245'
 JW1245'THE HIPOINT ASTRO ECCENTRIC STATION IS A CORPS OF ENGINEERS, U.S. ARMY
 JW1245'DISK STAMPED HIPOINT ASTRO A.M.S. 1968 AND IS SET IN A SQUARE CONCRETE
 JW1245'MONUMENT SET FLUSH WITH THE GROUND SURFACE.
 JW1245'
 JW1245'NOTE-A KEY TO THE LOCKED POLE GATE IS TO BE OBTAINED FROM MR. ELMER H.
 JW1245'UPOLE, STATE FORESTER SUPERVISOR.  MR. UPOLE LIVES IN OAKLAND,
 JW1245'MARYLAND AND SHOULD BE CONTACTED BEFORE WORKING THIS AREA.  OFFICE
 JW1245'PHONE 334-3296, HOME PHONE 334-3278.
 JW1245'
 JW1245'HEIGHT OF LIGHT ABOVE STATION MARK 22.2 METERS.
 JW1245
 JW1245                          STATION RECOVERY (1975)
 JW1245
 JW1245'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (JRS)
 JW1245'THE STATION MARK, REFERENCE MARKS 1, 2, HIPOINT RM A, THE AZIMUTH MARK
 JW1245'AND HIPOINT ASTRO WERE RECOVERED.  THE DISTANCE AND DIRECTION TO
 JW1245'REFERENCE MARK 1 CHECKED THE 1968 DATA ADEQUATELY.  THE DIRECTION TO
 JW1245'REFERENCE MARK 2 CHECKED BUT THE DISTANCE DID NOT, BEING 0.009 METER
 JW1245'SHORTER THAN THE 1968 DATA.  THE DISTANCE AND DIRECTION TO HIPOINT
 JW1245'ASTRO CHECKED ADEQUATELY.  THE DISTANCE TO HIPOINT RM A THE 1968 DATA
 JW1245'AS DID THE DIRECTION.
 JW1245'
 JW1245'THE AZIMUTH MARK IS NOT VISIBLE FROM THE GROUND DUE TO TERRAIN.
 JW1245'FOLLOWING IS A NEW DESCRIPTION.
 JW1245'
 JW1245'STATION IS ABOUT 4 MILES WEST OF GRANTSVILLE, 0.3 MILE SOUTH OF U.S.
 JW1245'HIGHWAY 40, ON PROPERTY OF SAVAGE RIVER STATE FOREST AND ON ABOUT THE
 JW1245'HIGHEST POINT OF THE MOUNTAIN.  PERMISSION WAS GRANTED BY THE STATE
 JW1245'FORESTRY SUPERVISOR.  PHONE 301-724-8530, CUMBERLAND, MD.
 JW1245'
 JW1245'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 219 AND 40, AT
 JW1245'THE VILLAGE OF KEYSER RIDGE, GO EAST ON HIGHWAY 40 FOR 2.2 MILES TO A
 JW1245'SIDE ROAD RIGHT JUST BEFORE REACHING A REST AREA.  TURN RIGHT AND GO
 JW1245'SOUTHERLY ON A TRACK ROAD FOR 0.4 MILE TO THE AZIMUTH MARK ON THE
 JW1245'RIGHT.  CONTINUE SOUTHERLY ON THE TRACK ROAD FOR 0.1 MILE TO A
 JW1245'CLEARING, A LOOKOUT TOWER AND THE STATION.
 JW1245'
 JW1245'STATION MARK IS A BRONZE DISK OF THE U.S.ARMY CORPS OF ENGINEERS,
 JW1245'STAMPED---HIPOINT 1968 ARMY MAP SERVICE---, SET IN THE TOP OF AN
 JW1245'8-INCH SQUARE CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND.  IT IS
 JW1245'47 FEET NORTH OF THE NORTHEAST LEG OF THE LOOKOUT TOWER AND 5 FEET
 JW1245'NORTH OF THE STEEL CABLE AROUND THE PARKING LOT.
 JW1245'
 JW1245'REFERENCE MARK A IS A BRONZE DISK OF THE U.S. ARMY CORPS OF ENGINEERS,
 JW1245'STAMPED---HIPOINT RM A 1968 ARMY MAP SERVICE---, SET IN THE TOP OF A
 JW1245'12-INCH SQUARE CONCRETE MONUMENT THAT PROJECTS 1 INCH ABOVE THE
 JW1245'GROUND.  IT IS 17.5 FEET WEST OF THE CENTERLINE OF THE ROAD AND 3 FEET
 JW1245'WEST OF A WITNESS POST.
 JW1245'
 JW1245'REFERENCE MARK NO. 1 IS A BRONZE DISK OF THE U.S. ARMY CORPS OF
 JW1245'ENGINEERS, STAMPED---HIPOINT RM 1 ARMY MAP SERVICE---, CEMENTED IN A
 JW1245'DRILL HOLE IN AN 18-INCH SQUARE CONCRETE ANCHOR FOR A GUY CABLE FOR
 JW1245'THE LOOKOUT TOWER.  IT IS 44 FEET NORTHEAST OF THE NORTHEAST LEG OF
 JW1245'THE LOOKOUT TOWER AND 12 FEET SOUTH-SOUTHEAST OF THE SOUTHEAST CORNER
 JW1245'POST OF THE PARKING LOT.
 JW1245'
 JW1245'MOUNTAIN LOT IS A BRONZE BENCH MARK DISK OF THE USGS, STAMPED
 JW1245'---LEGROW MTN LOT 1945---, CEMENTED IN A DRILL HOLE IN A 2 FOOT BY 4
 JW1245'FOOT CONCRETE LANDING FOR THE STEPS OF THE LOOKOUT TOWER.  IT IS NEAR
 JW1245'THE CENTER OF THE BASE OF THE LOOKOUT TOWER.
 JW1245'
 JW1245'REFERENCE MARK NO. 2 IS A BRONZE DISK OF THE U.S. ARMY CORPS OF
 JW1245'ENGINEERS, STAMPED---HIPOINT RM 2 1968 ARMY MAP SERVICE---, CEMENTED
 JW1245'IN A DRILL HOLE IN A 2 FOOT BY 4 FOOT ROCK OUTCROP THAT PROJECTS ABOUT
 JW1245'1 FOOT.  IT IS 25 FEET WEST OF THE WEST CABLE AROUND THE PARKING LOT.
 JW1245'NOTE-THIS MARK OBSTRUCTED FROM RM A BY LARGE TREES.
 JW1245'
 JW1245'HIPOINT ASTRO IS A BRONZE DISK OF THE U.S. ARMY CORPS OF ENGINEERS,
 JW1245'STAMPED---HIPOINT ASTRO ECC 1968 A.M.S.---, SET IN THE TOP OF AN 8
 JW1245'INCH SQUARE CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND.  IT IS 16
 JW1245'FEET EAST OF THE WEST CABLE AROUND THE PARKING LOT AND 64 FEET SOUTH
 JW1245'OF THE WITNESS POST.
 JW1245
 JW1245                          STATION RECOVERY (1985)
 JW1245
 JW1245'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 JW1245'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1244 ***********************************************************************
 JW1244  DESIGNATION -  HIPOINT RM A
 JW1244  PID         -  JW1244
 JW1244  STATE/COUNTY-  MD/GARRETT
 JW1244  COUNTRY     -  US
 JW1244  USGS QUAD   -  GRANTSVILLE (2016)
 JW1244
 JW1244                         *CURRENT SURVEY CONTROL
 JW1244  ______________________________________________________________________
 JW1244* NAD 83(1995) POSITION- 39 42 08.34409(N) 079 12 52.76185(W)   ADJUSTED
 JW1244* NAVD 88 ORTHO HEIGHT -   936.06  (+/-2cm)     3071.1   (feet) VERTCON3
 JW1244  ______________________________________________________________________
 JW1244  GEOID HEIGHT    -        -31.446 (meters)                     GEOID18
 JW1244  LAPLACE CORR    -         -0.60  (seconds)                    DEFLEC18
 JW1244  HORZ ORDER      -  FIRST
 JW1244  VERT ORDER      -  THIRD ? (See Below)
 JW1244
 JW1244.The horizontal coordinates were established by classical geodetic methods
 JW1244.and adjusted by the National Geodetic Survey in April 1998.
 JW1244
 JW1244.The NAVD 88 height was computed by applying the VERTCON shift value to
 JW1244.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JW1244
 JW1244.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1244.GEOID18 height accuracy estimate available here.
 JW1244
 JW1244.The vertical order pertains to the NGVD 29 superseded value.
 JW1244
 JW1244.Click photographs - Photos may exist for this station.
 JW1244
 JW1244.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1244
 JW1244. The following values were computed from the NAD 83(1995) position.
 JW1244
 JW1244;                    North         East     Units Scale Factor Converg.
 JW1244;SPC MD       -   228,282.269   210,071.714   MT  1.00005389   -1 23 24.0
 JW1244;SPC MD       -   748,956.08    689,210.28   sFT  1.00005389   -1 23 24.0
 JW1244;SPC PA S     -    42,012.122   474,386.165   MT  1.00004415   -0 57 00.9
 JW1244;SPC PA S     -   137,834.77  1,556,381.94   sFT  1.00004415   -0 57 00.9
 JW1244;UTM  17      - 4,396,241.870   653,060.728   MT  0.99988843   +1 08 26.5
 JW1244
 JW1244!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1244!SPC MD       -   0.99985810  x   1.00005389  =   0.99991198
 JW1244!SPC PA S     -   0.99985810  x   1.00004415  =   0.99990224
 JW1244!UTM  17      -   0.99985810  x   0.99988843  =   0.99974655
 JW1244
 JW1244:                Primary Azimuth Mark                     Grid Az
 JW1244:SPC MD       -  HIPOINT AZ MK                            056 15 45.4
 JW1244:SPC PA S     -  HIPOINT AZ MK                            055 49 22.3
 JW1244:UTM  17      -  HIPOINT AZ MK                            053 43 54.9
 JW1244
 JW1244_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD5306096241(NAD 83)
 JW1244
 JW1244|---------------------------------------------------------------------|
 JW1244| PID    Reference Object                     Distance      Geod. Az  |
 JW1244|                                                           dddmmss.s |
 JW1244| CX4686 HIPOINT AZ MK                                      0545221.4 |
 JW1244| CX4687 HIPOINT RM 1                         35.308 METERS 19117     |
 JW1244| JW1245 HIPOINT                              29.181 METERS 20816     |
 JW1244| JW1247 JW1247                               46.145 METERS 21008     |
 JW1244| JW1246 JW1246                               46.179 METERS 21011     |
 JW1244|---------------------------------------------------------------------|
 JW1244
 JW1244                          SUPERSEDED SURVEY CONTROL
 JW1244
 JW1244  NAD 83(1991)-  39 42 08.34599(N)    079 12 52.76802(W) AD(       ) 1
 JW1244  NAD 83(1986)-  39 42 08.35032(N)    079 12 52.76927(W) AD(       ) 1
 JW1244  NAD 27      -  39 42 08.06090(N)    079 12 53.65893(W) AD(       ) 1
 JW1244  NGVD 29 (07/19/86)  936.16   (m)         3071.4    (f) LEVELING    3  
 JW1244
 JW1244.Superseded values are not recommended for survey control.
 JW1244
 JW1244.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1244.See file dsdata.pdf to determine how the superseded data were derived.
 JW1244
 JW1244_MARKER: DD = SURVEY DISK
 JW1244_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1244_STAMPING: HIPOINT RM A 1968 ARMY MAP SERVICE
 JW1244_MARK LOGO: USACE
 JW1244_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1244+STABILITY: SURFACE MOTION
 JW1244
 JW1244  HISTORY     - Date     Condition        Report By
 JW1244  HISTORY     - 1968     MONUMENTED       AMS
 JW1244  HISTORY     - 1975     GOOD             NGS
 JW1244
 JW1244                          STATION DESCRIPTION
 JW1244
 JW1244'DESCRIBED BY US ARMY MAP SERVICE (NOW DMA) 1968 (WOK)
 JW1244'THE STATION IS LOCATED AT THE SITE OF TRIANGULATION STATION HIPOINT
 JW1244'1968 (AMS).
 JW1244'
 JW1244'TO REACH THE STATION HIPOINT AMS FROM THE U.S. POST OFFICE IN
 JW1244'GRANTSVILLE,GO WESTERLY ON U.S. HIGHWAY 40 FOR 3.9 MILES TO SUMMIT OF
 JW1244'GRADE AND A SMALL ROADSIDE PARK ON THE LEFT AND ON THE RIGHT IS A
 JW1244'SUNOCO SERVICE STATION AND THE COZY MT. TOP RESTAURANT.  AT THE
 JW1244'WEST END OF THE SMALL ROADSIDE PARK GO LEFT THROUGH A LOCKED POLE
 JW1244'GATE AND GO SOUTHERLY UPHILL ON A GRAVELED STATE FOREST SERVICE
 JW1244'ROAD FOR 0.25 MILE TO THE AZIMUTH MARK IN A BOULDER ON THE
 JW1244'RIGHT.  CONTINUE FOR 0.15 MILE TO SUMMIT OF HILL AND PARKING
 JW1244'AREA FOR LOOKOUT TOWER AND THE STATION.
 JW1244'
 JW1244'THE STATION IS A CORPS OF ENGINEERS, U.S. ARMY DISK STAMPED HIPOINT
 JW1244'RM A 1968 ARMY MAP SERVICE, AND IS SET IN THE TOP OF A SQUARE
 JW1244'CONCRETE MONUMENT THAT IS FLUSH WITH THE SURFACE OF THE GROUND.  A
 JW1244'SUB-SURFACE MARK IN A BLOCK OF CONCRETE WAS SET AND STAMPED THE
 JW1244'SAME AS THE SURFACE DISK.
 JW1244'
 JW1244'A TRAVERSE CONNECTION WAS MADE TO STATION HIPOINT AMS, DISTANCE BEING
 JW1244'29.186 METERS OR 95.76 FEET SOUTH-SOUTHWEST.
 JW1244
 JW1244                          STATION RECOVERY (1975)
 JW1244
 JW1244'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (JRS)
 JW1244'THE STATION MARK AND HIPOINT AMS WERE RECOVERED. THE DISTANCE AND
 JW1244'DIRECTION TO HIPOINT AMS CHECKED THE 1968 DATA ADEQUATELY. DUE TO
 JW1244'OBSERVATIONS TO ADDITIONAL MARKS A NEW DESCRIPTION FOLLOWS.
 JW1244'
 JW1244'STATION IS ABOUT 4 MILES WEST OF GRANTSVILLE, 0.3 MILE SOUTH OF
 JW1244'U.S. HIGHWAY 40, ON PROPERTY OF SAVAGE RIVER STATE FOREST AND ON
 JW1244'ABOUT THE HIGHEST POINT OF THE MOUNTAIN. PERMISSION WAS GRANTED
 JW1244'BY THE STATE FORESTRY SUPERVISOR, GEORGE GILMORE, PHONE 724-8530,
 JW1244'CUMBERLAND, MARYLAND.
 JW1244'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 219 AND
 JW1244'40 AT THE VILLAGE OF KEYSER RIDGE, GO EAST ON HIGHWAY 40 FOR
 JW1244'2.2 MILES TO A SIDE ROAD RIGHT JUST BEFORE REACHING A REST
 JW1244'AREA.  TURN RIGHT AND GO SOUTHERLY ON A TRACK ROAD FOR 0.4
 JW1244'MILE TO THE AZIMUTH MARK ON THE RIGHT. CONTINUE SOUTHERLY ON
 JW1244'THE TRACK ROAD FOR 0.1 MILE TO A CLEARING, A LOOKOUT TOWER AND
 JW1244'THE STATION.
 JW1244'
 JW1244'STATION MARK IS A BRONZE DISK OF THE U.S. ARMY CORPS OF ENGINEERS,
 JW1244'STAMPED---HIPOINT RM A 1968 ARMY MAP SERVICE---, SET IN THE TOP OF A
 JW1244'12-INCH SQUARE CONCRETE MONUMENT THAT PROJECTS 1 INCH ABOVE THE
 JW1244'GROUND. IT IS 17.5 FEET WEST OF THE CENTER OF THE ROAD AND 3 FEET
 JW1244'WEST OF A WITNESS POST.
 JW1244'
 JW1244'HIPOINT ASTRO IS A BRONZE DISK OF THE U.S. ARMY CORPS OF ENGINEERS,
 JW1244'STAMPED---HIPOINT ASTRO ECC 1968 A.M.S.---, SET IN THE TOP OF AN
 JW1244'8-INCH SQUARE CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND. IT
 JW1244'IS 16 FEET EAST OF THE WEST CABLE AROUND THE PARKING LOT AND 64
 JW1244'FEET SOUTH OF THE WITNESS POST.
 JW1244'
 JW1244'REFERENCE MARK 1 IS A BRONZE DISK OF THE U.S. ARMY CORPS OF
 JW1244'ENGINEERS, STAMPED---HIPOINT RM 1 ARMY MAP SERVICE, CEMENTED IN
 JW1244'A DRILL HOLE IN AN 8-INCH SQUARE CONCRETE ANCHOR FOR A GUY CABLE
 JW1244'FOR THE LOOKOUT TOWER. IT IS 44 FEET NORTHEAST OF THE NORTHEAST
 JW1244'LEG OF THE LOOKOUT TOWER AND 12 FEET SOUTH-SOUTHEAST OF THE
 JW1244'SOUTHEAST CORNER POST OF THE PARKING LOT.
 JW1244'
 JW1244'HIPOINT AMS 1968 IS A BRONZE DISK OF THE U.S.ARMY CORPS OF ENGINEERS,
 JW1244'STAMPED---HIPOINT 1968 ARMY MAP SERVICE---, SET IN THE TOP OF AN
 JW1244'8-INCH SQUARE CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND.
 JW1244'IT IS 47 FEET NORTH OF THE NORTHEAST LEG OF THE LOOKOUT TOWER AND
 JW1244'5 FEET NORTH OF THE STEEL CABLE AROUND THE PARKING LOT.
 JW1244'
 JW1244'THE MOUNTAIN LOT IS A BRONZE BENCH MARK DISK OF THE U.S. GEOLOGICAL
 JW1244'SURVEY, STAMPED---LEGROW MTN LOT 1945---, CEMENTED IN A DRILL HOLE
 JW1244'IN A 2 FOOT BY 4 FOOT CONCRETE LANDING FOR THE STEPS OF THE LOOKOUT
 JW1244'TOWER. IT IS NEAR THE CENTER OF THE BASE OF THE LOOKOUT TOWER.
 JW1244'
 JW1244'THE EXISTING AZIMUTH MARK IS OBSTRUCTED AND THERE IS
 JW1244'NO SUITABLE LOCATION FOR AN ADDITIONAL MARK.
 JW1244'HEIGHT OF LIGHT ABOVE MARK 22.3 METERS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7119 ***********************************************************************
 HV7119  DESIGNATION -  HIPT
 HV7119  PID         -  HV7119
 HV7119  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7119  COUNTRY     -  US
 HV7119  USGS QUAD   -  SOUTH RIVER (2016)
 HV7119
 HV7119                         *CURRENT SURVEY CONTROL
 HV7119  ______________________________________________________________________
 HV7119* NAD 83(1991) POSITION- 38 55 26.43384(N) 076 30 01.44243(W)   ADJUSTED
 HV7119* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7119  ______________________________________________________________________
 HV7119  GEOID HEIGHT    -        -33.407 (meters)                     GEOID18
 HV7119  LAPLACE CORR    -         -3.58  (seconds)                    DEFLEC18
 HV7119  HORZ ORDER      -  SECOND
 HV7119
 HV7119.The horizontal coordinates were established by classical geodetic methods
 HV7119.and adjusted by the National Geodetic Survey in January 1992.
 HV7119
 HV7119.The orthometric height was scaled from a topographic map.
 HV7119
 HV7119.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7119.GEOID18 height accuracy estimate available here.
 HV7119
 HV7119.Click photographs - Photos may exist for this station.
 HV7119
 HV7119.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7119
 HV7119. The following values were computed from the NAD 83(1991) position.
 HV7119
 HV7119;                    North         East     Units Scale Factor Converg.
 HV7119;SPC MD       -   139,689.090   443,322.374   MT  0.99995020   +0 18 48.8
 HV7119;SPC MD       -   458,296.62  1,454,466.82   sFT  0.99995020   +0 18 48.8
 HV7119;UTM  18      - 4,309,413.988   369,935.653   MT  0.99980831   -0 56 34.1
 HV7119
 HV7119!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7119!SPC MD       -   1.00000512  x   0.99995020  =   0.99995532
 HV7119!UTM  18      -   1.00000512  x   0.99980831  =   0.99981343
 HV7119
 HV7119:                Primary Azimuth Mark                     Grid Az
 HV7119:SPC MD       -  TURKEY PT LARGE GREY HOUSE CHY           164 30 09.0
 HV7119:UTM  18      -  TURKEY PT LARGE GREY HOUSE CHY           165 45 31.9
 HV7119
 HV7119_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6993509413(NAD 83)
 HV7119
 HV7119|---------------------------------------------------------------------|
 HV7119| PID    Reference Object                     Distance      Geod. Az  |
 HV7119|                                                           dddmmss.s |
 HV7119| CX2883 HIPT RM 3                             8.330 METERS 01823     |
 HV7119| CX2881 HIPT RM 1                            10.195 METERS 06624     |
 HV7119| HV6318 TURKEY PT LARGE GREY HOUSE CHY      APPROX. 1.8 KM 1644857.8 |
 HV7119| HV7116 TURKEY POINT WHITE WATER TANK       APPROX. 2.3 KM 1782510.6 |
 HV7119| CX2882 HIPT RM 2                             8.732 METERS 34358     |
 HV7119|---------------------------------------------------------------------|
 HV7119
 HV7119                          SUPERSEDED SURVEY CONTROL
 HV7119
 HV7119  NAD 83(1986)-  38 55 26.43035(N)    076 30 01.45401(W) AD(       ) 2
 HV7119  NAD 27      -  38 55 26.01200(N)    076 30 02.59600(W) AD(       ) 2
 HV7119
 HV7119.Superseded values are not recommended for survey control.
 HV7119
 HV7119.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7119.See file dsdata.pdf to determine how the superseded data were derived.
 HV7119
 HV7119_MARKER: DS = TRIANGULATION STATION DISK
 HV7119_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7119_STAMPING: HIPT 1932
 HV7119_MARK LOGO: CGS
 HV7119_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7119
 HV7119  HISTORY     - Date     Condition        Report By
 HV7119  HISTORY     - 1932     MONUMENTED       CGS
 HV7119  HISTORY     - 1957     MARK NOT FOUND   USGS
 HV7119
 HV7119                          STATION DESCRIPTION
 HV7119
 HV7119'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV7119'ON THE N BANK OF THE SOUTH RIVER, ON HILL POINT AND ABOUT 2 MILES
 HV7119'FROM THE MOUTH OF THE RIVER.  THE POINT IS QUITE PROMINENT.  IT IS
 HV7119'HEAVILY WOODED AND IS ABOUT 40 FEET HIGH.  THE STATION IS 3 METERS
 HV7119'FROM THE S EDGE OF THE BLUFF.  THE POINT IS PART OF THE HILLSMERE
 HV7119'ESTATE OWNED BY DR. SMITH AND IS PROTECTED BY A CONCRETE
 HV7119'BULKHEAD.  A LARGE PROMINENT ELM TREE 2-1/2 FEET IN DIAMETER IS
 HV7119'ABOUT 5 METERS NE OF THE STATION.
 HV7119'
 HV7119'SURFACE MARK IS A STANDARD BRONZE DISK SET IN CONCRETE, IN THE
 HV7119'TOP OF A TILE AS DESCRIBED.  UNDERGROUND AND REFERENCE MARKS ARE
 HV7119'STANDARD BRONZE DISKS SET IN CONCRETE AS DESCRIBED.
 HV7119'
 HV7119'REFERENCE MARK NO.1 IS ABOUT 2 YARDS N OF S EDGE OF BLUFF AND
 HV7119'REFERENCE MARK NO.2 IS ABOUT 8 YARDS E OF W EDGE OF BLUFF.  THE
 HV7119'MARKS PROJECT ABOUT 2 INCHES ABOVE THE SURFACE.  THE GROUND IS
 HV7119'COVERED WITH HONEYSUCKLE VINE AND IT IS PROBABLE THAT THE STATION
 HV7119'AND REFERENCE MARKS WILL SOON BE COVERED BY THIS GROWTH.
 HV7119
 HV7119                          STATION RECOVERY (1957)
 HV7119
 HV7119'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1957
 HV7119'STATION NOT FOUND.  A NEW HOUSE (PART OF THE HILLSMERE
 HV7119'SUBDIVISION) IS ON THE POINT, AND THE GROUND AROUND HAS BEEN
 HV7119'FILLED AND GRADED.  EITHER DESTROYED OR COVERED WITH FILL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4645 ***********************************************************************
 AB4645  DESIGNATION -  HIVELY
 AB4645  PID         -  AB4645
 AB4645  STATE/COUNTY-  MD/CARROLL
 AB4645  COUNTRY     -  US
 AB4645  USGS QUAD   -  TANEYTOWN (2016)
 AB4645
 AB4645                         *CURRENT SURVEY CONTROL
 AB4645  ______________________________________________________________________
 AB4645* NAD 83(2011) POSITION- 39 41 04.48277(N) 077 11 14.24839(W)   ADJUSTED
 AB4645* NAD 83(2011) ELLIP HT-   125.155 (meters)        (06/27/12)   ADJUSTED
 AB4645* NAD 83(2011) EPOCH   -  2010.00
 AB4645* NAVD 88 ORTHO HEIGHT -   158.2   (meters)      519.    (feet) GPS OBS
 AB4645  ______________________________________________________________________
 AB4645  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4645  GEOID HEIGHT    -        -33.067 (meters)                     GEOID99
 AB4645  GEOID HEIGHT    -        -33.078 (meters)                     GEOID18
 AB4645  NAD 83(2011) X  -  1,090,027.500 (meters)                     COMP
 AB4645  NAD 83(2011) Y  - -4,792,852.917 (meters)                     COMP
 AB4645  NAD 83(2011) Z  -  4,051,175.446 (meters)                     COMP
 AB4645  LAPLACE CORR    -          4.30  (seconds)                    DEFLEC18
 AB4645
 AB4645  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4645  Standards:
 AB4645         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4645            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4645  -------------------------------------------------------------------
 AB4645  NETWORK    1.15   2.82           0.48   0.46   1.44     -0.09988392
 AB4645  -------------------------------------------------------------------
 AB4645  Click here for local accuracies and other accuracy information.
 AB4645
 AB4645.The horizontal coordinates were established by GPS observations
 AB4645.and adjusted by the National Geodetic Survey in June 2012.
 AB4645
 AB4645.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4645.been affixed to the stable North American tectonic plate. See 
 AB4645.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4645
 AB4645.The horizontal coordinates are valid at the epoch date displayed above
 AB4645.which is a decimal equivalence of Year/Month/Day.
 AB4645
 AB4645.The orthometric height was determined by GPS observations and a
 AB4645.high-resolution geoid model.
 AB4645
 AB4645.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4645.GEOID18 height accuracy estimate available here.
 AB4645
 AB4645.Click photographs - Photos may exist for this station.
 AB4645
 AB4645.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4645
 AB4645.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4645
 AB4645.The ellipsoidal height was determined by GPS observations
 AB4645.and is referenced to NAD 83.
 AB4645
 AB4645. The following values were computed from the NAD 83(2011) position.
 AB4645
 AB4645;                    North         East     Units Scale Factor Converg.
 AB4645;SPC MD       -   224,025.142   383,932.352   MT  1.00004946   -0 07 03.2
 AB4645;SPC MD       -   734,989.15  1,259,618.06   sFT  1.00004946   -0 07 03.2
 AB4645;UTM  18      - 4,395,036.332   312,428.753   MT  1.00003317   -1 23 49.6
 AB4645
 AB4645!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4645!SPC MD       -   0.99998037  x   1.00004946  =   1.00002982
 AB4645!UTM  18      -   0.99998037  x   1.00003317  =   1.00001353
 AB4645
 AB4645_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1242895036(NAD 83)
 AB4645
 AB4645|---------------------------------------------------------------------|
 AB4645| PID    Reference Object                     Distance      Geod. Az  |
 AB4645|                                                           dddmmss.s |
 AB4645| AB4732 HIVELY AZ MK                        336.371 METERS 00641     |
 AB4645|---------------------------------------------------------------------|
 AB4645
 AB4645                          SUPERSEDED SURVEY CONTROL
 AB4645
 AB4645  NAD 83(2007)-  39 41 04.48278(N)    077 11 14.24954(W) AD(2002.00) 0
 AB4645  ELLIP H (02/10/07)  125.166  (m)                       GP(2002.00)    
 AB4645  ELLIP H (08/30/02)  125.184  (m)                       GP(       ) 4 2
 AB4645  NAD 83(1991)-  39 41 04.48253(N)    077 11 14.24925(W) AD(       ) 1
 AB4645  ELLIP H (07/03/96)  125.148  (m)                       GP(       ) 1 1
 AB4645  NAVD 88 (07/03/96)  158.3    (m)  GEOID93  model used  GPS OBS        
 AB4645
 AB4645.Superseded values are not recommended for survey control.
 AB4645
 AB4645.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4645.See file dsdata.pdf to determine how the superseded data were derived.
 AB4645
 AB4645_MARKER: DD = SURVEY DISK
 AB4645_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4645_STAMPING: HIVELY 1995
 AB4645_MARK LOGO: MD-013
 AB4645_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4645_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4645+STABILITY: SURFACE MOTION
 AB4645_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4645+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4645
 AB4645  HISTORY     - Date     Condition        Report By
 AB4645  HISTORY     - 1995     MONUMENTED       MD-013
 AB4645
 AB4645                          STATION DESCRIPTION
 AB4645
 AB4645'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4645'STATION IS LOCATED ABOUT 1.5 MI (2.4 KM) NORTHWEST OF TANEYTOWN AND
 AB4645'ABOUT 2 MI (3.2 KM) SOUTH OF THE PENNSYLVANIA STATE LINE. TO REACH
 AB4645'STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN PIKE) AND MD
 AB4645'ROUTE 194 (FRANCIS SCOTT KEY HIGHWAY) AT TANEYTOWN GO NORTHWEST ON MD
 AB4645'ROUTE 140 FOR 0.4 MI (0.6 KM) TO THE INTERSECTION WITH HARNEY ROAD.
 AB4645'TURN RIGHT AND GO NORTH ON HARNEY ROAD FOR 1.55 MI (2.49 KM) TO THE
 AB4645'STATION ON THE LEFT. STATION IS ALSO 1.1 MI (1.8 KM) SOUTH OF THE
 AB4645'INTERSECTION OF HARNEY ROAD WITH PINEY CREEK ROAD. STATION MARK IS SET
 AB4645'IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4645'GROUND. IT IS 33.0 FT (10.1 M) WEST OF THE CENTERLINE OF THE ROAD, 9.7
 AB4645'FT (3.0 M) NORTHWEST OF POWER POLE NO.F64266, 49 FT (14.9 M) WEST OF
 AB4645'TELEPHONE POLE NO. 71, 72.5 FT (22.1 M) SOUTHEAST OF THE EASTERNMOST
 AB4645'CORNER OF HOUSE NO. 3968 AND 56 FT (17.1 M) SOUTH OF A GRAVEL DRIVEWAY
 AB4645'LEADING WESTERLY TO THE HOUSE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4732 ***********************************************************************
 AB4732  DESIGNATION -  HIVELY AZ MK
 AB4732  PID         -  AB4732
 AB4732  STATE/COUNTY-  MD/CARROLL
 AB4732  COUNTRY     -  US
 AB4732  USGS QUAD   -  TANEYTOWN (2016)
 AB4732
 AB4732                         *CURRENT SURVEY CONTROL
 AB4732  ______________________________________________________________________
 AB4732* NAD 83(2011) POSITION- 39 41 15.31532(N) 077 11 12.60714(W)   ADJUSTED
 AB4732* NAD 83(2011) ELLIP HT-   128.452 (meters)        (06/27/12)   ADJUSTED
 AB4732* NAD 83(2011) EPOCH   -  2010.00
 AB4732* NAVD 88 ORTHO HEIGHT -   161.6   (meters)      530.    (feet) GPS OBS
 AB4732  ______________________________________________________________________
 AB4732  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4732  GEOID HEIGHT    -        -33.076 (meters)                     GEOID99
 AB4732  GEOID HEIGHT    -        -33.087 (meters)                     GEOID18
 AB4732  NAD 83(2011) X  -  1,090,018.885 (meters)                     COMP
 AB4732  NAD 83(2011) Y  - -4,792,638.683 (meters)                     COMP
 AB4732  NAD 83(2011) Z  -  4,051,434.657 (meters)                     COMP
 AB4732  LAPLACE CORR    -          4.33  (seconds)                    DEFLEC18
 AB4732
 AB4732  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4732  Standards:
 AB4732         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4732            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4732  -------------------------------------------------------------------
 AB4732  NETWORK    1.02   2.65           0.44   0.39   1.35     -0.09712366
 AB4732  -------------------------------------------------------------------
 AB4732  Click here for local accuracies and other accuracy information.
 AB4732
 AB4732.The horizontal coordinates were established by GPS observations
 AB4732.and adjusted by the National Geodetic Survey in June 2012.
 AB4732
 AB4732.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4732.been affixed to the stable North American tectonic plate. See 
 AB4732.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4732
 AB4732.The horizontal coordinates are valid at the epoch date displayed above
 AB4732.which is a decimal equivalence of Year/Month/Day.
 AB4732
 AB4732.The orthometric height was determined by GPS observations and a
 AB4732.high-resolution geoid model.
 AB4732
 AB4732.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4732.GEOID18 height accuracy estimate available here.
 AB4732
 AB4732.Click photographs - Photos may exist for this station.
 AB4732
 AB4732.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4732
 AB4732.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4732
 AB4732.The ellipsoidal height was determined by GPS observations
 AB4732.and is referenced to NAD 83.
 AB4732
 AB4732. The following values were computed from the NAD 83(2011) position.
 AB4732
 AB4732;                    North         East     Units Scale Factor Converg.
 AB4732;SPC MD       -   224,359.168   383,972.147   MT  1.00005021   -0 07 02.2
 AB4732;SPC MD       -   736,085.04  1,259,748.62   sFT  1.00005021   -0 07 02.2
 AB4732;UTM  18      - 4,395,369.380   312,475.997   MT  1.00003295   -1 23 48.9
 AB4732
 AB4732!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4732!SPC MD       -   0.99997985  x   1.00005021  =   1.00003006
 AB4732!UTM  18      -   0.99997985  x   1.00003295  =   1.00001280
 AB4732
 AB4732_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1247595369(NAD 83)
 AB4732
 AB4732|---------------------------------------------------------------------|
 AB4732| PID    Reference Object                     Distance      Geod. Az  |
 AB4732|                                                           dddmmss.s |
 AB4732| AB4645 HIVELY                              336.371 METERS 18641     |
 AB4732|---------------------------------------------------------------------|
 AB4732
 AB4732                          SUPERSEDED SURVEY CONTROL
 AB4732
 AB4732  NAD 83(2007)-  39 41 15.31531(N)    077 11 12.60837(W) AD(2002.00) 0
 AB4732  ELLIP H (02/10/07)  128.464  (m)                       GP(2002.00)    
 AB4732  ELLIP H (08/30/02)  128.481  (m)                       GP(       ) 4 2
 AB4732  NAD 83(1991)-  39 41 15.31505(N)    077 11 12.60816(W) AD(       ) 1
 AB4732  ELLIP H (07/03/96)  128.446  (m)                       GP(       ) 1 1
 AB4732  NAVD 88 (07/03/96)  161.6    (m)  GEOID93  model used  GPS OBS        
 AB4732
 AB4732.Superseded values are not recommended for survey control.
 AB4732
 AB4732.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4732.See file dsdata.pdf to determine how the superseded data were derived.
 AB4732
 AB4732_MARKER: DD = SURVEY DISK
 AB4732_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4732_STAMPING: HIVELY AZI 1995
 AB4732_MARK LOGO: MD-013
 AB4732_PROJECTION: FLUSH
 AB4732_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4732+STABILITY: SURFACE MOTION
 AB4732_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4732+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2020
 AB4732
 AB4732  HISTORY     - Date     Condition        Report By
 AB4732  HISTORY     - 1995     MONUMENTED       MD-013
 AB4732  HISTORY     - 20200630 GOOD             BASE9
 AB4732
 AB4732                          STATION DESCRIPTION
 AB4732
 AB4732'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4732'STATION IS LOCATED ABOUT 2.5 MI (4.0 KM) NORTHWEST OF TANEYTOWN AND
 AB4732'ABOUT 2.0 MI (3.2 KM) SOUTH OF THE MARYLAND/PENNSYLVANIA STATE LINE.
 AB4732'TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 140 (TANEYTOWN
 AB4732'PIKE) AND MD ROUTE 194 (FRANCIS SCOTT KEY HIGHWAY) AT TANEYTOWN, GO
 AB4732'WEST ON MD ROUTE 140 FOR 0.35 MI (0.56 KM) TO THE INTERSECTION WITH
 AB4732'HARNEY ROAD. TURN RIGHT ON HARNEY ROAD AND GO NORTH FOR 1.7 MI (2.7
 AB4732'KM) TO THE STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A
 AB4732'10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 32.5
 AB4732'FT (9.9 M) NORTHEAST OF THE CENTERLINE OF THE ROAD, 71.0 FT (21.6 M)
 AB4732'SOUTHEAST OF POWER POLE NO. F-28145, 38.5 FT (11.7 M) SOUTHWEST OF A 2
 AB4732'IN MAPLE TREE AND 154 FT (46.9 M) NORTHWEST OF POWER POLE NO. F-28144.
 AB4732
 AB4732                          STATION RECOVERY (2020)
 AB4732
 AB4732'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2020 (DRD)
 AB4732'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK7514 ***********************************************************************
 DK7514  DESIGNATION -  HMI 1
 DK7514  PID         -  DK7514
 DK7514  STATE/COUNTY-  MD/BALTIMORE
 DK7514  COUNTRY     -  US
 DK7514  USGS QUAD   -  SWAN POINT (2016)
 DK7514
 DK7514                         *CURRENT SURVEY CONTROL
 DK7514  ______________________________________________________________________
 DK7514* NAD 83(2011) POSITION- 39 14 25.00339(N) 076 22 00.34736(W)   ADJUSTED
 DK7514* NAD 83(2011) ELLIP HT-   -28.272 (meters)        (06/27/12)   ADJUSTED
 DK7514* NAD 83(2011) EPOCH   -  2010.00
 DK7514* NAVD 88 ORTHO HEIGHT -     4.8   (meters)       16.    (feet) GPS OBS
 DK7514  ______________________________________________________________________
 DK7514  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DK7514  GEOID HEIGHT    -        -33.060 (meters)                     GEOID03
 DK7514  GEOID HEIGHT    -        -33.081 (meters)                     GEOID18
 DK7514  NAD 83(2011) X  -  1,165,913.291 (meters)                     COMP
 DK7514  NAD 83(2011) Y  - -4,807,105.038 (meters)                     COMP
 DK7514  NAD 83(2011) Z  -  4,012,994.408 (meters)                     COMP
 DK7514  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 DK7514
 DK7514  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DK7514  Standards:
 DK7514         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DK7514            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DK7514  -------------------------------------------------------------------
 DK7514  NETWORK    0.53   0.84           0.23   0.20   0.43      0.03440479
 DK7514  -------------------------------------------------------------------
 DK7514  Click here for local accuracies and other accuracy information.
 DK7514
 DK7514.The horizontal coordinates were established by GPS observations
 DK7514.and adjusted by the National Geodetic Survey in June 2012.
 DK7514
 DK7514.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DK7514.been affixed to the stable North American tectonic plate. See 
 DK7514.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DK7514
 DK7514.The horizontal coordinates are valid at the epoch date displayed above
 DK7514.which is a decimal equivalence of Year/Month/Day.
 DK7514
 DK7514.The orthometric height was determined by GPS observations and a
 DK7514.high-resolution geoid model.
 DK7514
 DK7514.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK7514.GEOID18 height accuracy estimate available here.
 DK7514
 DK7514.Click photographs - Photos may exist for this station.
 DK7514
 DK7514.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DK7514
 DK7514.The Laplace correction was computed from DEFLEC18 derived deflections.
 DK7514
 DK7514.The ellipsoidal height was determined by GPS observations
 DK7514.and is referenced to NAD 83.
 DK7514
 DK7514. The following values were computed from the NAD 83(2011) position.
 DK7514
 DK7514;                    North         East     Units Scale Factor Converg.
 DK7514;SPC MD       -   174,869.944   454,666.940   MT  0.99997003   +0 23 50.8
 DK7514;SPC MD       -   573,719.14  1,491,686.45   sFT  0.99997003   +0 23 50.8
 DK7514;UTM  18      - 4,344,331.143   382,048.649   MT  0.99977130   -0 51 52.8
 DK7514
 DK7514!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DK7514!SPC MD       -   1.00000444  x   0.99997003  =   0.99997447
 DK7514!UTM  18      -   1.00000444  x   0.99977130  =   0.99977573
 DK7514
 DK7514_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8204844331(NAD 83)
 DK7514
 DK7514                          SUPERSEDED SURVEY CONTROL
 DK7514
 DK7514  NAD 83(2007)-  39 14 25.00378(N)    076 22 00.34782(W) AD(2002.00) 1
 DK7514  ELLIP H (11/28/08)  -28.264  (m)                       GP(2002.00) 3 1
 DK7514
 DK7514.Superseded values are not recommended for survey control.
 DK7514
 DK7514.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DK7514.See file dsdata.pdf to determine how the superseded data were derived.
 DK7514
 DK7514_MARKER: DD = SURVEY DISK
 DK7514_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DK7514_SP_SET: CONCRETE STEPS
 DK7514_STAMPING: HMI-1 JUNE 2008
 DK7514_MARK LOGO: MDPORT
 DK7514_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK7514_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DK7514_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DK7514+SATELLITE: SATELLITE OBSERVATIONS - June 01, 2008
 DK7514
 DK7514  HISTORY     - Date     Condition        Report By
 DK7514  HISTORY     - 20080601 MONUMENTED       JMTMD
 DK7514
 DK7514                          STATION DESCRIPTION
 DK7514
 DK7514'DESCRIBED BY JMT ENGINEERING 2008
 DK7514'THE MARK IS LOCATED ABOUT 10.0 MI (16.1 KM) NORTHWEST OF ROCK HALL,
 DK7514'7.6 MI (12.2 KM) SOUTH-SOUTHEAST OF MIDDLE RIVER AND 6.1 MI (9.8 KM)
 DK7514'EAST-NORTHEAST OF SPARROWS POINT.  IT IS LOCATED ON HART-MILLER
 DK7514'ISLAND.
 DK7514'
 DK7514'TO THE BOAT LAUNCH SITE FROM MD 150 (EASTERN AVENUE) AND ROUTE 702
 DK7514'(BACK RIVER NECK ROAD). HEAD SOUTH ON ROUTE 702 FOR 9.2 KM (5.7 MI)
 DK7514'UNTIL YOU REACH RIVERVIEW DRIVE.  TURN RIGHT.  PROCEED 0.5 KM (0.3 MI)
 DK7514'TURN LEFT INTO MD ENVIRONMENTAL SERVICES PARKING LOT.  TAKE BOAT
 DK7514'SOUTHEAST APPROXIMATELY 4.8 KM (3.0 MI) TO SHORE ON THE NORTH SIDE OF
 DK7514'HART-MILLER ISLAND.
 DK7514'
 DK7514'FROM BOAT DOCK AT HART-MILLER ISLAND TAKE GRAVEL ROAD SOUTH THEN RIGHT
 DK7514'AT SPLIT.  GO 1.9 KM (1.2 MI) TO CONCRETE STEPS ON RIGHT SIDE OF ROAD.
 DK7514'STATION IS AT THE TOP OF THE STEPS.
 DK7514'
 DK7514'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DK7514'CONCRETE NEAR THE TOP OF THE STEPS.  IT IS 30.4 M (99.7 FT) NORTH OF A
 DK7514'LIGHT POLE AT THE END OF PIER, 8.0 M (26.2 FT) SOUTHWEST FROM CORNER
 DK7514'OF A CONCRETE PIER, 7.8 M (25.6 FT) NORTH OF CENTER OF STEPS, 1.6 M
 DK7514'(5.2 FT) SOUTH FROM THE CENTER OF STEPS, AND 1.0 M (3.3 FT) SOUTHEAST
 DK7514'OF A STEEL LIGHT POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DK7515 ***********************************************************************
 DK7515  DESIGNATION -  HMI 2
 DK7515  PID         -  DK7515
 DK7515  STATE/COUNTY-  MD/BALTIMORE
 DK7515  COUNTRY     -  US
 DK7515  USGS QUAD   -  SWAN POINT (2016)
 DK7515
 DK7515                         *CURRENT SURVEY CONTROL
 DK7515  ______________________________________________________________________
 DK7515* NAD 83(2011) POSITION- 39 14 51.74001(N) 076 21 06.97918(W)   ADJUSTED
 DK7515* NAD 83(2011) ELLIP HT-   -27.921 (meters)        (06/27/12)   ADJUSTED
 DK7515* NAD 83(2011) EPOCH   -  2010.00
 DK7515* NAVD 88 ORTHO HEIGHT -     5.2   (meters)       17.    (feet) GPS OBS
 DK7515  ______________________________________________________________________
 DK7515  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DK7515  GEOID HEIGHT    -        -33.076 (meters)                     GEOID03
 DK7515  GEOID HEIGHT    -        -33.095 (meters)                     GEOID18
 DK7515  NAD 83(2011) X  -  1,167,034.009 (meters)                     COMP
 DK7515  NAD 83(2011) Y  - -4,806,296.591 (meters)                     COMP
 DK7515  NAD 83(2011) Z  -  4,013,633.191 (meters)                     COMP
 DK7515  LAPLACE CORR    -         -2.07  (seconds)                    DEFLEC18
 DK7515
 DK7515  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DK7515  Standards:
 DK7515         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DK7515            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DK7515  -------------------------------------------------------------------
 DK7515  NETWORK    0.53   0.84           0.23   0.20   0.43      0.02917151
 DK7515  -------------------------------------------------------------------
 DK7515  Click here for local accuracies and other accuracy information.
 DK7515
 DK7515.The horizontal coordinates were established by GPS observations
 DK7515.and adjusted by the National Geodetic Survey in June 2012.
 DK7515
 DK7515.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DK7515.been affixed to the stable North American tectonic plate. See 
 DK7515.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DK7515
 DK7515.The horizontal coordinates are valid at the epoch date displayed above
 DK7515.which is a decimal equivalence of Year/Month/Day.
 DK7515
 DK7515.The orthometric height was determined by GPS observations and a
 DK7515.high-resolution geoid model.
 DK7515
 DK7515.Significant digits in the geoid height do not necessarily reflect accuracy.
 DK7515.GEOID18 height accuracy estimate available here.
 DK7515
 DK7515.Click photographs - Photos may exist for this station.
 DK7515
 DK7515.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DK7515
 DK7515.The Laplace correction was computed from DEFLEC18 derived deflections.
 DK7515
 DK7515.The ellipsoidal height was determined by GPS observations
 DK7515.and is referenced to NAD 83.
 DK7515
 DK7515. The following values were computed from the NAD 83(2011) position.
 DK7515
 DK7515;                    North         East     Units Scale Factor Converg.
 DK7515;SPC MD       -   175,703.409   455,940.855   MT  0.99997087   +0 24 24.3
 DK7515;SPC MD       -   576,453.60  1,495,865.96   sFT  0.99997087   +0 24 24.3
 DK7515;UTM  18      - 4,345,136.184   383,340.353   MT  0.99976757   -0 51 19.6
 DK7515
 DK7515!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DK7515!SPC MD       -   1.00000438  x   0.99997087  =   0.99997525
 DK7515!UTM  18      -   1.00000438  x   0.99976757  =   0.99977195
 DK7515
 DK7515_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8334045136(NAD 83)
 DK7515
 DK7515                          SUPERSEDED SURVEY CONTROL
 DK7515
 DK7515  NAD 83(2007)-  39 14 51.74040(N)    076 21 06.97964(W) AD(2002.00) 1
 DK7515  ELLIP H (11/28/08)  -27.914  (m)                       GP(2002.00) 3 1
 DK7515
 DK7515.Superseded values are not recommended for survey control.
 DK7515
 DK7515.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DK7515.See file dsdata.pdf to determine how the superseded data were derived.
 DK7515
 DK7515_MARKER: DD = SURVEY DISK
 DK7515_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 DK7515_SP_SET: CONCRETE STEPS
 DK7515_STAMPING: HMI-2 JUNE 2008
 DK7515_MARK LOGO: MDPORT
 DK7515_MAGNETIC: N = NO MAGNETIC MATERIAL
 DK7515_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DK7515+STABILITY: SURFACE MOTION
 DK7515_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DK7515+SATELLITE: SATELLITE OBSERVATIONS - June 01, 2008
 DK7515
 DK7515  HISTORY     - Date     Condition        Report By
 DK7515  HISTORY     - 20080601 MONUMENTED       JMTMD
 DK7515
 DK7515                          STATION DESCRIPTION
 DK7515
 DK7515'DESCRIBED BY JMT ENGINEERING 2008
 DK7515'THE MARK IS LOCATED ABOUT 9.8 MI (15.8 KM) NORTHWEST OF ROCK HALL, 7.6
 DK7515'MI (12.2 KM) SOUTHEAST OF MIDDLE RIVER AND 7.0 MI (11.3 KM)
 DK7515'EAST-NORTHEAST OF SPARROWS POINT.  IT IS LOCATED ON HART-MILLER
 DK7515'ISLAND.
 DK7515'
 DK7515'TO BOAT LAUNCH SITE FROM MD 150 (EASTERN AVENUE) AND ROUTE 702 (BACK
 DK7515'RIVER NECK ROAD), HEAD SOUTH ON ROUTE 702 FOR 9.2 KM (5.7 MI) UNTIL
 DK7515'YOU REACH RIVERVIEW DRIVE.  TURN RIGHT.  PROCEED 0.5 KM (0.3 MI) TURN
 DK7515'LEFT INTO MD ENVIRONMENTAL SERVICES PARKING LOT.  TAKE BOAT SOUTHEAST
 DK7515'APPROXIMATELY 4.8 KM (3.0 MI) TO SHORE ON THE NORTH SIDE OF
 DK7515'HART-MILLER ISLAND.
 DK7515'
 DK7515'FROM BOAT DOCK AT HART-MILLER ISLAND. TAKE GRAVEL ROAD SOUTH THEN
 DK7515'RIGHT AT SPLIT.  GO 3.5 KM (2.2 MI) TO CONCRETE STEPS ON RIGHT SIDE OF
 DK7515'ROAD.  STATION IS AT THE TOP OF THE STEPS.
 DK7515'
 DK7515'THE STATION MARK IS A STANDARD MDPORT SURVEY CONTROL DISK SET FLUSH IN
 DK7515'CONCRETE NEAR THE TOP OF THE STEPS.  IT IS 31.7 M (104.0 FT) NORTH OF
 DK7515'A LIGHT POLE AT THE END OF PIER, 17.9 M (58.7 FT) SOUTHEAST OF A
 DK7515'CONCRETE HEADWALL, 16.2 M (53.1 FT) SOUTH OF THE TOP OF A CONCRETE
 DK7515'HEADWALL, 5.8 M (19.0 FT) SOUTHWEST OF THE CENTERLINE OF IRON DREDGE
 DK7515'PIPE, AND 0.9 M (3.0 FT) WEST OF A LIGHT POLE AT THE TOP OF STEPS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8042 ***********************************************************************
 AJ8042  FBN         -  This is a Federal Base Network Control Station.
 AJ8042  DESIGNATION -  HNPT A
 AJ8042  PID         -  AJ8042
 AJ8042  STATE/COUNTY-  MD/DORCHESTER
 AJ8042  COUNTRY     -  US
 AJ8042  USGS QUAD   -  CHURCH CREEK (2016)
 AJ8042
 AJ8042                         *CURRENT SURVEY CONTROL
 AJ8042  ______________________________________________________________________
 AJ8042* NAD 83(2011) POSITION- 38 35 15.47542(N) 076 07 52.04598(W)   ADJUSTED
 AJ8042* NAD 83(2011) ELLIP HT-   -31.768 (meters)        (06/27/12)   ADJUSTED
 AJ8042* NAD 83(2011) EPOCH   -  2010.00
 AJ8042* NAVD 88 ORTHO HEIGHT -     3.1   (meters)       10.    (feet) GPS OBS
 AJ8042  ______________________________________________________________________
 AJ8042  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8042  GEOID HEIGHT    -        -34.861 (meters)                     GEOID99
 AJ8042  GEOID HEIGHT    -        -34.901 (meters)                     GEOID18
 AJ8042  NAD 83(2011) X  -  1,196,581.824 (meters)                     COMP
 AJ8042  NAD 83(2011) Y  - -4,846,450.906 (meters)                     COMP
 AJ8042  NAD 83(2011) Z  -  3,956,617.966 (meters)                     COMP
 AJ8042  LAPLACE CORR    -         -3.75  (seconds)                    DEFLEC18
 AJ8042
 AJ8042  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8042  Standards:
 AJ8042         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8042            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8042  -------------------------------------------------------------------
 AJ8042  NETWORK    0.50   0.86           0.20   0.21   0.44     -0.21133229
 AJ8042  -------------------------------------------------------------------
 AJ8042  Click here for local accuracies and other accuracy information.
 AJ8042
 AJ8042.This is a reference station for the HORN POINT ENVIRO
 AJ8042.National Continuously Operating Reference Station (HNPT).
 AJ8042
 AJ8042.The horizontal coordinates were established by GPS observations
 AJ8042.and adjusted by the National Geodetic Survey in June 2012.
 AJ8042
 AJ8042.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8042.been affixed to the stable North American tectonic plate. See 
 AJ8042.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8042
 AJ8042.The horizontal coordinates are valid at the epoch date displayed above
 AJ8042.which is a decimal equivalence of Year/Month/Day.
 AJ8042
 AJ8042.The orthometric height was determined by GPS observations and a
 AJ8042.high-resolution geoid model.
 AJ8042
 AJ8042.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8042.GEOID18 height accuracy estimate available here.
 AJ8042
 AJ8042.Click photographs - Photos may exist for this station.
 AJ8042
 AJ8042.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8042
 AJ8042.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8042
 AJ8042.The ellipsoidal height was determined by GPS observations
 AJ8042.and is referenced to NAD 83.
 AJ8042
 AJ8042. The following values were computed from the NAD 83(2011) position.
 AJ8042
 AJ8042;                    North         East     Units Scale Factor Converg.
 AJ8042;SPC MD       -   102,591.003   475,698.559   MT  0.99996243   +0 32 43.2
 AJ8042;SPC MD       -   336,583.98  1,560,687.69   sFT  0.99996243   +0 32 43.2
 AJ8042;UTM  18      - 4,271,623.841   401,486.584   MT  0.99971951   -0 42 20.0
 AJ8042
 AJ8042!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8042!SPC MD       -   1.00000498  x   0.99996243  =   0.99996741
 AJ8042!UTM  18      -   1.00000498  x   0.99971951  =   0.99972449
 AJ8042
 AJ8042_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0148671623(NAD 83)
 AJ8042
 AJ8042|---------------------------------------------------------------------|
 AJ8042| PID    Reference Object                     Distance      Geod. Az  |
 AJ8042|                                                           dddmmss.s |
 AJ8042| AI3494 HORN POINT ENVIRO CORS ARP          146.172 METERS 02642     |
 AJ8042|---------------------------------------------------------------------|
 AJ8042
 AJ8042                          SUPERSEDED SURVEY CONTROL
 AJ8042
 AJ8042  NAD 83(2007)-  38 35 15.47586(N)    076 07 52.04706(W) AD(2002.00) 0
 AJ8042  ELLIP H (02/10/07)  -31.749  (m)                       GP(2002.00)    
 AJ8042  NAD 83(1991)-  38 35 15.47527(N)    076 07 52.04720(W) AD(       ) A
 AJ8042  ELLIP H (02/12/02)  -31.745  (m)                       GP(       ) 4 1
 AJ8042
 AJ8042.Superseded values are not recommended for survey control.
 AJ8042
 AJ8042.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8042.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8042
 AJ8042_MARKER: F = FLANGE-ENCASED ROD
 AJ8042_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 AJ8042_STAMPING: HNPT A 2000
 AJ8042_MARK LOGO: NGS
 AJ8042_PROJECTION: RECESSED 5 CENTIMETERS
 AJ8042_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8042_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ8042_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8042+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2015
 AJ8042_ROD/PIPE-DEPTH: 17.7 meters
 AJ8042_SLEEVE-DEPTH  : 0.9 meters
 AJ8042
 AJ8042  HISTORY     - Date     Condition        Report By
 AJ8042  HISTORY     - 2000     MONUMENTED       NGS
 AJ8042  HISTORY     - 20060325 GOOD             USPSQD
 AJ8042  HISTORY     - 20070330 GOOD             USPSQD
 AJ8042  HISTORY     - 20150728 GOOD             BASE9
 AJ8042
 AJ8042                          STATION DESCRIPTION
 AJ8042
 AJ8042'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 AJ8042'THE STATION IS LOCATED ABOUT 6.44 KM (4.00 MI) NORTHWEST OF CAMBRIDGE
 AJ8042'AT HORN POINT ON THE PROPERTY OF THE UNIVERSITY OF MARYLAND CENTER OF
 AJ8042'ENVIRONMENTAL SCIENCE (HORN POINT LABORATORY) LOCATED NEAR THE SOUTH
 AJ8042'CORNER POST OF A CHAIN LINK FENCE ENCLOSING FOUR RECTANGULAR FISH
 AJ8042'PONDS NEAR THE JUNCTION OF DUPONT LANE AND MORRIS DRIVE.
 AJ8042'OWNERSHIP--UNIVERSITY OF MARYLAND.  NOTE--CONTACT MR.  GREG MANN
 AJ8042'(ASSISTANT DIRECTOR) ONE DAY IN ADVANCE BEFORE OCCUPYING THIS STATION,
 AJ8042'PHONE (410) 221-8403.  TO REACH THE STATION FROM THE SOUTH END OF THE
 AJ8042'US HIGHWAY 50 BRIDGE OVER THE CHOPTANK RIVER IN CAMBRIDGE, GO SOUTH ON
 AJ8042'HIGHWAY 50 FOR 1.45 KM (0.90 MI) TO THE JUNCTION OF STATE HIGHWAY 343
 AJ8042'(WASHINGTON STREET) ON THE RIGHT, TURN RIGHT, WEST ON HIGHWAY 343 FOR
 AJ8042'5.15 KM (3.20 MI) TO THE JUNCTION OF HORN POINT ROAD ON THE RIGHT,
 AJ8042'TURN RIGHT, NORTHWEST ON HORN POINT ROAD FOR 2.49 KM (1.55 MI) TO THE
 AJ8042'ENTRANCE OF THE UNIVERSITY OF MARYLAND CENTER FOR ENVIRONMENTAL
 AJ8042'SCIENCE HORN POINT LABORATORY ON THE RIGHT, TURN RIGHT, NORTHEAST ON
 AJ8042'THE ENTRANCE DRIVE (DUPONT LANE) FOR 0.72 KM (0.45 MI) TO THE JUNCTION
 AJ8042'OF MORRIS LANE ON THE RIGHT, TURN RIGHT, SOUTHEAST ON MORRIS LANE FOR
 AJ8042'0.08 KM (0.05 MI) TO THE SOUTHEAST END OF A CHAIN LINK FENCE ENCLOSING
 AJ8042'FOUR RECTANGULAR FISH PONDS AND TO THE STATION ON THE NORTHEAST SIDE
 AJ8042'OF THE ENTRANCE GATE OF THE FENCE.  THE STATION IS AN NGS 3D STATION,
 AJ8042'A PUNCH MARK ON THE TOP OF A STAINLESS STEEL ROD IN A GREASE-FILLED
 AJ8042'SLEEVE, ENCASED IN A 13 CM PVC PIPE WITH A LOGO CAP SURROUNDED BY
 AJ8042'CONCRETE AND ABOUT FLUSH WITH THE GROUND, LOCATED 6.25 M (20.51 FT)
 AJ8042'NORTHEAST OF THE CENTER OF MORRIS LANE, 2.89 M (9.48 FT) NORTHWEST OF
 AJ8042'THE SOUTH END POST OF THE FENCE, 0.61 M (2.00 FT) WEST-NORTHWEST OF
 AJ8042'THE NORTHEAST GATE POST OF THE FENCE AND 0.45 M (1.48 FT) SOUTHWEST OF
 AJ8042'THE FENCE WITH AN NGS METAL WITNESS POST SIGN ATTACHED TO THE FENCE.
 AJ8042
 AJ8042                          STATION RECOVERY (2006)
 AJ8042
 AJ8042'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 AJ8042'RECOVERED IN GOOD CONDITION.
 AJ8042
 AJ8042                          STATION RECOVERY (2007)
 AJ8042
 AJ8042'RECOVERY NOTE BY US POWER SQUADRON 2007 (NLH)
 AJ8042'RECOVERED IN GOOD CONDITION.
 AJ8042
 AJ8042                          STATION RECOVERY (2015)
 AJ8042
 AJ8042'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2015 (DRD)
 AJ8042'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8043 ***********************************************************************
 AJ8043  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8043  DESIGNATION -  HNPT B
 AJ8043  PID         -  AJ8043
 AJ8043  STATE/COUNTY-  MD/DORCHESTER
 AJ8043  COUNTRY     -  US
 AJ8043  USGS QUAD   -  CHURCH CREEK (2016)
 AJ8043
 AJ8043                         *CURRENT SURVEY CONTROL
 AJ8043  ______________________________________________________________________
 AJ8043* NAD 83(2011) POSITION- 38 35 20.27159(N) 076 08 27.46918(W)   ADJUSTED
 AJ8043* NAD 83(2011) ELLIP HT-   -30.303 (meters)        (06/27/12)   ADJUSTED
 AJ8043* NAD 83(2011) EPOCH   -  2010.00
 AJ8043* NAVD 88 ORTHO HEIGHT -     4.5   (meters)       15.    (feet) GPS OBS
 AJ8043  ______________________________________________________________________
 AJ8043  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AJ8043  GEOID HEIGHT    -        -34.839 (meters)                     GEOID99
 AJ8043  GEOID HEIGHT    -        -34.878 (meters)                     GEOID18
 AJ8043  NAD 83(2011) X  -  1,195,727.673 (meters)                     COMP
 AJ8043  NAD 83(2011) Y  - -4,846,567.886 (meters)                     COMP
 AJ8043  NAD 83(2011) Z  -  3,956,734.479 (meters)                     COMP
 AJ8043  LAPLACE CORR    -         -3.85  (seconds)                    DEFLEC18
 AJ8043
 AJ8043  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8043  Standards:
 AJ8043         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8043            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8043  -------------------------------------------------------------------
 AJ8043  NETWORK    0.50   0.86           0.20   0.21   0.44     -0.21329190
 AJ8043  -------------------------------------------------------------------
 AJ8043  Click here for local accuracies and other accuracy information.
 AJ8043
 AJ8043.This is a reference station for the HORN POINT ENVIRO
 AJ8043.National Continuously Operating Reference Station (HNPT).
 AJ8043
 AJ8043.The horizontal coordinates were established by GPS observations
 AJ8043.and adjusted by the National Geodetic Survey in June 2012.
 AJ8043
 AJ8043.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8043.been affixed to the stable North American tectonic plate. See 
 AJ8043.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8043
 AJ8043.The horizontal coordinates are valid at the epoch date displayed above
 AJ8043.which is a decimal equivalence of Year/Month/Day.
 AJ8043
 AJ8043.The orthometric height was determined by GPS observations and a
 AJ8043.high-resolution geoid model.
 AJ8043
 AJ8043.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8043.GEOID18 height accuracy estimate available here.
 AJ8043
 AJ8043.Click photographs - Photos may exist for this station.
 AJ8043
 AJ8043.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8043
 AJ8043.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8043
 AJ8043.The ellipsoidal height was determined by GPS observations
 AJ8043.and is referenced to NAD 83.
 AJ8043
 AJ8043. The following values were computed from the NAD 83(2011) position.
 AJ8043
 AJ8043;                    North         East     Units Scale Factor Converg.
 AJ8043;SPC MD       -   102,730.770   474,839.928   MT  0.99996231   +0 32 21.0
 AJ8043;SPC MD       -   337,042.53  1,557,870.66   sFT  0.99996231   +0 32 21.0
 AJ8043;UTM  18      - 4,271,782.281   400,631.416   MT  0.99972159   -0 42 42.2
 AJ8043
 AJ8043!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8043!SPC MD       -   1.00000475  x   0.99996231  =   0.99996706
 AJ8043!UTM  18      -   1.00000475  x   0.99972159  =   0.99972634
 AJ8043
 AJ8043_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0063171782(NAD 83)
 AJ8043
 AJ8043                          SUPERSEDED SURVEY CONTROL
 AJ8043
 AJ8043  NAD 83(2007)-  38 35 20.27204(N)    076 08 27.47026(W) AD(2002.00) 0
 AJ8043  ELLIP H (02/10/07)  -30.283  (m)                       GP(2002.00)    
 AJ8043  NAD 83(1991)-  38 35 20.27145(N)    076 08 27.47040(W) AD(       ) A
 AJ8043  ELLIP H (02/12/02)  -30.278  (m)                       GP(       ) 4 1
 AJ8043
 AJ8043.Superseded values are not recommended for survey control.
 AJ8043
 AJ8043.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8043.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8043
 AJ8043_MARKER: F = FLANGE-ENCASED ROD
 AJ8043_SETTING: 59 = STAINLESS STEEL ROD IN SLEEVE (10 FT.+)
 AJ8043_STAMPING: HNPT B 2000
 AJ8043_MARK LOGO: NGS
 AJ8043_PROJECTION: RECESSED 5 CENTIMETERS
 AJ8043_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8043_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 AJ8043_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8043+SATELLITE: SATELLITE OBSERVATIONS - July 28, 2015
 AJ8043_ROD/PIPE-DEPTH: 19.8 meters
 AJ8043_SLEEVE-DEPTH  : 0.9 meters
 AJ8043
 AJ8043  HISTORY     - Date     Condition        Report By
 AJ8043  HISTORY     - 2000     MONUMENTED       NGS
 AJ8043  HISTORY     - 20060325 GOOD             USPSQD
 AJ8043  HISTORY     - 20070330 GOOD             USPSQD
 AJ8043  HISTORY     - 20150728 GOOD             BASE9
 AJ8043
 AJ8043                          STATION DESCRIPTION
 AJ8043
 AJ8043'DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (MLM)
 AJ8043'THE STATION IS LOCATED ABOUT 6.44 KM (4.00 MI) NORTHWEST OF CAMBRIDGE
 AJ8043'AT HORN POINT ON THE PROPERTY OF THE UNIVERSITY OF THE MARYLAND CENTER
 AJ8043'FOR ENVIRONMENTAL SCIENCE ON THE NORTHWEST SIDE OF THE PROPERTY AND
 AJ8043'THE AIR FIELD, AT THE EAST CORNER OF A MOUND OF EARTH ENCLOSING FOUR
 AJ8043'RECTANGULAR FISH PONDS.  OWNERSHIP--UNIVERSITY OF MARYLAND.
 AJ8043'NOTE--CONTACT MR.  GREG MANN (ASSISTANT DIRECTOR) ONE DAY IN ADVANCE
 AJ8043'BEFORE OCCUPYING THIS STATION , PHONE (410) 221-8403.  TO REACH THE
 AJ8043'STATION FROM THE SOUTH END OF THE US HIGHWAY 50 BRIDGE OVER THE
 AJ8043'CHOPTANK RIVER IN CAMBRIDGE, GO SOUTH ON HIGHWAY 50 FOR 1.45 KM (0.90
 AJ8043'MI) TO THE JUNCTION OF STATE HIGHWAY 343 (WASHINGTON STREET) ON THE
 AJ8043'RIGHT, TURN RIGHT, WEST ON HIGHWAY 343 FOR 5.15 KM (3.20 MI) TO THE
 AJ8043'JUNCTION OF HORN POINT ROAD ON THE RIGHT, TURN RIGHT, NORTHWEST ON
 AJ8043'HORN POINT ROAD FOR 2.49 KM (1.55 MI) TO THE ENTRANCE DRIVE OF THE
 AJ8043'UNIVERSITY OF MARYLAND CENTER OF ENVIRONMENTAL SCIENCE HORN POINT
 AJ8043'LABORATORY ON THE RIGHT, CONTINUE AHEAD, NORTHWEST ON HORN POINT ROAD
 AJ8043'FOR 0.56 M (1.84 FT) PASSING THE DORCHESTER HERITAGE MUSEUM TO THE
 AJ8043'JUNCTION OF A GRAVEL ROAD ON THE RIGHT, TURN RIGHT, NORTHEAST ON THE
 AJ8043'GRAVEL ROAD FOR 0.16 KM (0.10 MI) TO A FORK OF A GRAVEL ROAD ENCLOSING
 AJ8043'FOUR RECTANGULAR FISH PONDS, BEAR RIGHT, SOUTHEAST ON THE POND ROAD
 AJ8043'FOR ABOUT 0.08 KM (0.05 MI) TO THE SOUTH CORNER OF THE MOUND, BEAR
 AJ8043'LEFT, NORTHEAST ON THE ROAD ALONG THE SOUTHEAST EDGE OF THE PONDS FOR
 AJ8043'ABOUT 0.08 KM (0.05 MI) TO IS EAST CORNER AND TO THE STATION ON THE
 AJ8043'RIGHT.  THE STATION IS AN NGS 3D STATION, A PUNCH MARK ON THE TOP OF A
 AJ8043'STAINLESS STEEL ROD IN A GREASE-FILLED SLEEVE, ENCASED IN A 13 CM PVC
 AJ8043'PIPE WITH A LOGO CAP SURROUNDED BY CONCRETE AND FLUSH WITH THE GROUND.
 AJ8043'LOCATED 12.95 M (42.49 FT) NORTH-NORTHEAST OF A LIGHT POLE, THE
 AJ8043'NORTHEAST ONE OF FOUR ON THE SOUTHEAST SIDE OF THE PONDS, 3.35 M
 AJ8043'(10.99 FT) WEST OF THE CENTER OF THE ROAD AND 0.49 M (1.61 FT)
 AJ8043'NORTHWEST OF A FIBERGLASS WITNESS POST.
 AJ8043
 AJ8043                          STATION RECOVERY (2006)
 AJ8043
 AJ8043'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 AJ8043'WITNESS POST IS DESTROYED. COVER IS BROKEN.
 AJ8043
 AJ8043                          STATION RECOVERY (2007)
 AJ8043
 AJ8043'RECOVERY NOTE BY US POWER SQUADRON 2007 (NLH)
 AJ8043'RECOVERED IN GOOD CONDITION.
 AJ8043
 AJ8043                          STATION RECOVERY (2015)
 AJ8043
 AJ8043'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2015 (DRD)
 AJ8043'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6474 ***********************************************************************
 JV6474  CBN         -  This is a Cooperative Base Network Control Station.
 JV6474  DESIGNATION -  HOBBS
 JV6474  PID         -  JV6474
 JV6474  STATE/COUNTY-  MD/HOWARD
 JV6474  COUNTRY     -  US
 JV6474  USGS QUAD   -  WOODBINE (2016)
 JV6474
 JV6474                         *CURRENT SURVEY CONTROL
 JV6474  ______________________________________________________________________
 JV6474* NAD 83(2011) POSITION- 39 17 51.13167(N) 077 01 35.49877(W)   ADJUSTED
 JV6474* NAD 83(2011) ELLIP HT-   149.168 (meters)        (06/27/12)   ADJUSTED
 JV6474* NAD 83(2011) EPOCH   -  2010.00
 JV6474* NAVD 88 ORTHO HEIGHT -   181.00  (meters)      593.8   (feet) N HEIGHT
 JV6474  ______________________________________________________________________
 JV6474  GEOID HEIGHT    -        -31.869 (meters)                     GEOID18
 JV6474  NAD 83(2011) X  -  1,109,610.651 (meters)                     COMP
 JV6474  NAD 83(2011) Y  - -4,816,424.529 (meters)                     COMP
 JV6474  NAD 83(2011) Z  -  4,018,028.101 (meters)                     COMP
 JV6474  LAPLACE CORR    -         -1.52  (seconds)                    DEFLEC18
 JV6474  DYNAMIC HEIGHT  -        180.91  (meters)      593.5   (feet) COMP
 JV6474  MODELED GRAVITY -    980,095.9   (mgal)                       NAVD 88
 JV6474
 JV6474  VERT ORDER      -  THIRD
 JV6474
 JV6474  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6474  Standards:
 JV6474         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6474            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6474  -------------------------------------------------------------------
 JV6474  NETWORK    0.43   0.84           0.19   0.16   0.43     -0.00022583
 JV6474  -------------------------------------------------------------------
 JV6474  Click here for local accuracies and other accuracy information.
 JV6474
 JV6474.The horizontal coordinates were established by GPS observations
 JV6474.and adjusted by the National Geodetic Survey in June 2012.
 JV6474
 JV6474.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6474.been affixed to the stable North American tectonic plate. See 
 JV6474.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6474
 JV6474.The horizontal coordinates are valid at the epoch date displayed above
 JV6474.which is a decimal equivalence of Year/Month/Day.
 JV6474
 JV6474.The orthometric height was determined by differential leveling
 JV6474.and adjusted by the NATIONAL GEODETIC SURVEY in August 1994.
 JV6474
 JV6474.The height was determined by precise leveling from only one NSRS
 JV6474.bench mark.  This was not adequate 'tie leveling' to NSRS and was
 JV6474.allowed ONLY to validate the GPS-derived height.
 JV6474
 JV6474.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6474.GEOID18 height accuracy estimate available here.
 JV6474
 JV6474.Click photographs - Photos may exist for this station.
 JV6474
 JV6474.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6474
 JV6474.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6474
 JV6474.The ellipsoidal height was determined by GPS observations
 JV6474.and is referenced to NAD 83.
 JV6474
 JV6474.The dynamic height is computed by dividing the NAVD 88
 JV6474.geopotential number by the normal gravity value computed on the
 JV6474.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6474.degrees latitude (g = 980.6199 gals.).
 JV6474
 JV6474.The modeled gravity was interpolated from observed gravity values.
 JV6474
 JV6474. The following values were computed from the NAD 83(2011) position.
 JV6474
 JV6474;                    North         East     Units Scale Factor Converg.
 JV6474;SPC MD       -   181,037.306   397,711.732   MT  0.99997688   -0 00 59.9
 JV6474;SPC MD       -   593,953.23  1,304,825.91   sFT  0.99997688   -0 00 59.9
 JV6474;UTM  18      - 4,351,753.148   325,249.461   MT  0.99997601   -1 17 01.8
 JV6474
 JV6474!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6474!SPC MD       -   0.99997660  x   0.99997688  =   0.99995348
 JV6474!UTM  18      -   0.99997660  x   0.99997601  =   0.99995261
 JV6474
 JV6474:                Primary Azimuth Mark                     Grid Az
 JV6474:SPC MD       -  ELLERSLIE AZ MK RESET                    043 05 51.7
 JV6474:UTM  18      -  ELLERSLIE AZ MK RESET                    044 21 53.6
 JV6474
 JV6474_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2524951753(NAD 83)
 JV6474
 JV6474|---------------------------------------------------------------------|
 JV6474| PID    Reference Object                     Distance      Geod. Az  |
 JV6474|                                                           dddmmss.s |
 JV6474| JV6473 ELLERSLIE AZ MK RESET               APPROX. 0.7 KM 0430451.8 |
 JV6474| JV4211 RIDGEVILLE ARMY MICROWAVE TWR       APPROX.13.6 KM 2934430.6 |
 JV6474|---------------------------------------------------------------------|
 JV6474
 JV6474                          SUPERSEDED SURVEY CONTROL
 JV6474
 JV6474  NAD 83(2007)-  39 17 51.13190(N)    077 01 35.49941(W) AD(2002.00) 0
 JV6474  ELLIP H (02/10/07)  149.191  (m)                       GP(2002.00)    
 JV6474  ELLIP H (02/12/02)  149.190  (m)                       GP(       ) 4 1
 JV6474  NAD 83(1991)-  39 17 51.13184(N)    077 01 35.49967(W) AD(       ) B
 JV6474  ELLIP H (10/23/91)  149.083  (m)                       GP(       ) 4 1
 JV6474  NAD 83(1986)-  39 17 51.13057(N)    077 01 35.51088(W) AD(       ) 1
 JV6474  NAD 27      -  39 17 50.75169(N)    077 01 36.59987(W) AD(       ) 1
 JV6474  NAVD 88 (07/03/96)  181.0    (m)  GEOID93  model used  GPS OBS        
 JV6474  NAVD 88 (10/21/93)  181.0    (m)  GEOID93  model used  GPS OBS        
 JV6474  NGVD 29             181.22   (m)          594.6    (f) LEVELING    3  
 JV6474  NGVD 29 (11/20/87)  181.1    (m)  RAPOU78  model used  GPS OBS        
 JV6474
 JV6474.Superseded values are not recommended for survey control.
 JV6474
 JV6474.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6474.See file dsdata.pdf to determine how the superseded data were derived.
 JV6474
 JV6474_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6474_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6474_STAMPING: HOBBS 1985
 JV6474_MARK LOGO: NGS
 JV6474_PROJECTION: FLUSH
 JV6474_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6474_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6474+STABILITY: SURFACE MOTION
 JV6474_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6474+SATELLITE: SATELLITE OBSERVATIONS - December 26, 2006
 JV6474
 JV6474  HISTORY     - Date     Condition        Report By
 JV6474  HISTORY     - 1985     MONUMENTED       NGS
 JV6474  HISTORY     - 1985     GOOD             NGS
 JV6474  HISTORY     - 19860121 GOOD
 JV6474  HISTORY     - 19900906 GOOD             NGS
 JV6474  HISTORY     - 19901125 GOOD             NGS
 JV6474  HISTORY     - 19910910 GOOD
 JV6474  HISTORY     - 19921014 GOOD             NGS
 JV6474  HISTORY     - 19940401 GOOD             MSI
 JV6474  HISTORY     - 19951129 GOOD             MCCRON
 JV6474  HISTORY     - 20000410 GOOD             MDSHA
 JV6474  HISTORY     - 20000902 MARK NOT FOUND   GEOMET
 JV6474  HISTORY     - 20000905 MARK NOT FOUND   GEOMET
 JV6474  HISTORY     - 20000915 GOOD             MD-027
 JV6474  HISTORY     - 20061226 GOOD             NGS
 JV6474
 JV6474                          STATION DESCRIPTION
 JV6474
 JV6474'DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 (RGP)
 JV6474'THERE ARE NO REFERENCE MARKS AT THIS STATION.
 JV6474'
 JV6474'THE STATION IS LOCATED ABOUT 2-3/4 KM (1-3/4 MI) SOUTH FROM
 JV6474'COOKSVILLE, 9-1/4 KM (5-3/4 MI) NORTH-NORTHWEST FROM SUNSHINE AND 15
 JV6474'KM (9-1/2 MI) NORTHWEST FROM CLARKSVILLE AND DIRECTLY BEHIND A SCHOOL
 JV6474'IN A SPORTS FIELD.
 JV6474'
 JV6474'OWNERSHIP--GLENWOOD MIDDLE SCHOOL DISTRICT.
 JV6474'
 JV6474'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 97 AND
 JV6474'144 (FREDERICK ROAD AND GEORGIA AVENUE) IN COOKSVILLE, GO SOUTH ON
 JV6474'STATE HIGHWAY 97 FOR 2.8 KM (1.75 MI) TO THE ENTRANCE TO GLENWOOD
 JV6474'MIDDLE SCHOOL ON THE RIGHT.  TURN RIGHT AND PICK WAY ACROSS A SPORTS
 JV6474'FIELD FOR 0.4 KM (0.25 MI) TO THE EXTREME SOUTHWEST EDGE OF THE
 JV6474'SCHOOL PROPERTY AND THE STATION.
 JV6474'
 JV6474'THE STATION IS A STANDARD NGS DISK STAMPED--HOBBS 1985--SET IN THE
 JV6474'TOP OF A 25 CM (10 INCH) ROUND CONCRETE MONUMENT FLUSH WITH THE
 JV6474'SURFACE OF THE GROUND.
 JV6474'
 JV6474'THE STATION IS LOCATED 125.6 M (412.2 FT) NW OF THE MOST SOUTHEAST
 JV6474'CORNER OF THE SCHOOL BUILDING, 41.1 M (134.7 FT) SOUTH OF THE MOST
 JV6474'SOUTHERLY METAL POST OF A BASEBALL BACKSTOP, 28.7 M (94.1 FT) WEST OF
 JV6474'THE EAST END OF THE FIRST BASE LINE, 52.1 M (170.9 FT) NW OF THE WEST
 JV6474'END OF A SOCCER GOAL POST AND 11.2 M (36.8 FT) NE OF A FOUR INCH PINE
 JV6474'
 JV6474'THE SUB-SURFACE MARK IS A STANDARD NGS DISK STAMPED--HOBBS 1985--
 JV6474'IMBEDDED IN AN IRREGULAR MASS OF CONCRETE 1.1 METERS (3.5 FT) BELOW
 JV6474'THE SURFACE.
 JV6474'
 JV6474'THE AZIMUTH MARK IS A STANDARD MBCS DISK STAMPED--ELLERSLIE AZ 1961
 JV6474'RESET 1963--SET INTO THE TOP OF A 15 CM (6 INCH) ROUND CONCRETE
 JV6474'MONUMENT FLUSH WITH THE SURFACE OF THE GROUND.
 JV6474'
 JV6474'THE AZIMUTH IS LOCATED 10.1 M (33.0 FT) SOUTH FROM THE CENTER OF
 JV6474'CARRS MILL ROAD, 12.3 M (40.4 FT) WEST FROM THE CENTER OF STATE
 JV6474'HIGHWAY 97, 0.3 M (1.0 FT) EAST OF A CARSONITE WITNESS POST AND
 JV6474'11.5 M (37.6 FT) NW OF A POWERLINE POLE NUMBERED 465707 29.
 JV6474'
 JV6474'TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE HIGHWAYS 97
 JV6474'AND 144 IN COOKSVILLE, GO SOUTH ON STATE HIGHWAY 97 (GEORGIA AVENUE)
 JV6474'FOR 2.2 KM (1.35 MI) TO THE MARK ON THE RIGHT.
 JV6474
 JV6474                          STATION RECOVERY (1985)
 JV6474
 JV6474'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985
 JV6474'RECOVERED IN GOOD CONDITION.
 JV6474
 JV6474                          STATION RECOVERY (1986)
 JV6474
 JV6474'RECOVERED 1986
 JV6474'RECOVERED IN GOOD CONDITION.
 JV6474
 JV6474                          STATION RECOVERY (1990)
 JV6474
 JV6474'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6474'THE STATION IS LOCATED ABOUT 2-3/4 KM (1-3/4 MI) SOUTH FROM
 JV6474'COOKSVILLE, 9-1/4 KM (5-3/4 MI) NORTH-NORTHWEST FROM SUNSHINE AND 15
 JV6474'KM (9-1/2 MI) NORTHWEST FROM CLARKSVILLE AND DIRECTLY BEHIND A SCHOOL
 JV6474'IN A SPORTS FIELD.
 JV6474'OWNERSHIP--GLENWOOD MIDDLE SCHOOL DISTRICT.
 JV6474'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAYS 97 AND
 JV6474'144 (FREDERICK ROAD AND GEORGIA AVENUE) IN COOKSVILLE, GO SOUTH ON
 JV6474'STATE HIGHWAY 97 FOR 2.8 KM (1.75 MI) TO THE ENTRANCE TO GLENWOOD
 JV6474'MIDDLE SCHOOL ON THE RIGHT.  TURN RIGHT AND PICK WAY ACROSS A SPORTS
 JV6474'FIELD FOR 0.4 KM (0.25 MI) TO THE EXTREME SOUTHWEST EDGE OF THE
 JV6474'SCHOOL PROPERTY AND THE STATION.
 JV6474'THE STATION IS A STANDARD NGS DISK STAMPED--HOBBS 1985--SET IN THE
 JV6474'TOP OF A 25 CM (10 INCH) ROUND CONCRETE MONUMENT FLUSH WITH THE
 JV6474'SURFACE OF THE GROUND.
 JV6474'THE STATION IS LOCATED 125.6 M (412.2 FT) NW OF THE MOST SOUTHEAST
 JV6474'CORNER OF THE SCHOOL BUILDING, 41.1 M (134.7 FT) SOUTH OF THE MOST
 JV6474'SOUTHERLY METAL POST OF A BASEBALL BACKSTOP, 28.7 M (94.1 FT) WEST OF
 JV6474'THE EAST END OF THE FIRST BASE LINE, 52.1 M (170.9 FT) NW OF THE WEST
 JV6474'END OF A SOCCER GOAL POST AND 11.2 M (36.8 FT) NE OF A FOUR INCH PINE
 JV6474'THE SUB-SURFACE MARK IS A STANDARD NGS DISK STAMPED--HOBBS 1985--
 JV6474'IMBEDDED IN AN IRREGULAR MASS OF CONCRETE 1.1 METERS (3.5 FT) BELOW
 JV6474'THE SURFACE.
 JV6474
 JV6474                          STATION RECOVERY (1990)
 JV6474
 JV6474'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6474'STATION MARK RECOVERED IN GOOD CONDITION.  OTHER MARKS NOT SEARCHED
 JV6474'FOR.
 JV6474'STATION IS LOCATED ABOUT 14 KM (8.7 MI) SOUTHEAST OF MOUNT AIRY, 2 KM
 JV6474'(1.2 MI) SOUTH OF COOKSVILLE, ALONG STATE HIGHWAY 97, AT THE EXTREME
 JV6474'REAR OF THE PLAYGROUND AT THE GLENWOOD MIDDLE SCHOOL, AND ON A WEST
 JV6474'SLOPE AT THE WEST CORNER OF THE PLAYGROUND.  OWNERSHIP--GLENWOOD
 JV6474'MIDDLE SCHOOL.  CONTACT PRINCIPALS OFFICE OR PATRICIA DORSEY AT
 JV6474'301-313-5520 IN ADVANCE SO THAT SECURITY CAN BE NOTIFIED.
 JV6474'TO REACH FROM THE JUNCTION OF INTERSTATE HIGHWAY 70 AND STATE HIGHWAY
 JV6474'97 (EXIT 76) JUST NORTH OF COOKSVILLE, GO SOUTH ON HIGHWAY 97 FOR
 JV6474'0.62 KM (0.39 MI) TO ITS JUNCTION WITH STATE HIGHWAY 144.  CONTINUE
 JV6474'SOUTH ON HIGHWAY 97 FOR 2.63 KM (1.63 MI) TO THE NORTH ENTRANCE TO
 JV6474'THE GLENWOOD MIDDLE SCHOOL ON THE RIGHT.  TURN RIGHT, NORTHWEST, ON
 JV6474'ENTRANCE ROAD AND DRIVEWAY FOR 0.11 KM (0.07 MI) TO A LOCKED GATE.
 JV6474'PASS THROUGH GATE, CROSSING PAVEMENT, FOR 0.10 KM (0.06 MI) TO
 JV6474'PAVEMENT END (BASKETBALL COURT).  BEAR HALF LEFT, WEST, ACROSS SOCCER
 JV6474'FIELD FOR 159 M (521.7 FT) TO A CLUMP OF PINE TREES AT THE WEST
 JV6474'CORNER OF THE SCHOOL GROUNDS AND THE STATION.
 JV6474'STATION MARK IS SET IN THE TOP OF A 30-CM ROUND CONCRETE POST FLUSH
 JV6474'WITH THE GROUND.  IT IS 0.4 M (1.3 FT) EAST OF A FIBERGLASS WITNESS
 JV6474'POST, 11 M (36.1 FT) NORTHEAST OF THE EDGE OF THE TREES, 19 M
 JV6474'(62.3 FT) SOUTHEAST OF THE MOW LINE AT FIELD EDGE, 41.1 M (134.8 FT)
 JV6474'SOUTH-SOUTHWEST OF THE SOUTHEAST END OF A BASEBALL BACKSTOP, 52.0 M
 JV6474'(170.6 FT) WEST-NORTHWEST OF THE NORTHWEST POST OF SOCCER GOAL, AND
 JV6474'125.3 M (411.1 FT) WEST-SOUTHWEST OF THE WEST CORNER OF THE SCHOOL
 JV6474'BUILDING.
 JV6474'DESCRIBED BY G.R.HEID.
 JV6474
 JV6474                          STATION RECOVERY (1991)
 JV6474
 JV6474'RECOVERED 1991
 JV6474'RECOVERED IN GOOD CONDITION.
 JV6474
 JV6474                          STATION RECOVERY (1992)
 JV6474
 JV6474'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992
 JV6474'THE STATION IS LOCATED ABOUT 14 KM (8.70 MI) SOUTHEAST OF MOUNT AIRY,
 JV6474'2 KM (1.25 MI) SOUTH OF COOKSVILLE, ALONG STATE HIGHWAY 97, AT THE
 JV6474'EXTREME REAR OF THE PLAYGROUND AT THE GLENWOOD MIDDLE SCHOOL AND ON A
 JV6474'WEST SLOPE AT THE WEST CORNER OF THE PLAYGROUND.  OWNERSHIP--GLENWOOD
 JV6474'MIDDLE SCHOOL.  CONTACT PRINCIPALS OFFICE OR PATRICIA DORSEY AT
 JV6474'301-313-5520 IN ADVANCE SO THAT SECURITY CAN BE NOTIFIED.
 JV6474'TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE 70 AND STATE
 JV6474'HIGHWAY 97 (EXIT 76) JUST NORTH OF COOKSVILLE, GO SOUTH ON HIGHWAY 97
 JV6474'FOR 0.62 KM (0.40 MI) TO ITS JUNCTION WITH STATE HIGHWAY 144.
 JV6474'CONTINUE SOUTH ON HIGHWAY 97 FOR 2.63 KM (1.65 MI) TO THE NORTH
 JV6474'ENTRANCE TO THE GLENWOOD MIDDLE SCHOOL ON THE RIGHT.  TURN RIGHT,
 JV6474'NORTHWEST ON ENTRANCE ROAD AND DRIVEWAY FOR 0.11 KM (0.05 MI) TO A
 JV6474'LOCKED GATE.  PASS THROUGH GATE, CROSSING PAVEMENT, FOR 0.1 KM
 JV6474'(0.05 MI) TO PAVEMENT END (BASKETBALL COURT). BEAR HALF LEFT, WEST
 JV6474'ACROSS SOCCER FIELD FOR 159 M (521.7 FT) TO A CLUMP OF PINE TREES AT
 JV6474'THE WEST CORNER OF THE SCHOOL GROUNDS AND THE STATION.
 JV6474'LOCATED 125.3 M (411.1 FT) WEST-SOUTHWEST OF THE WEST CORNER OF THE
 JV6474'SCHOOL BUILDING, 52.0 M (170.6 FT) WEST-NORTHWEST OF THE NORTHWEST
 JV6474'POST OF THE SOCCER GOAL, 41.1 M (134.8 FT) SOUTH-SOUTHWEST OF THE
 JV6474'SOUTHEAST END OF A BASEBALL BACKSTOP, 19 M (62.3 FT) SOUTHEAST OF THE
 JV6474'MOW LINE AT FIELD EDGE, 11 M (36.1 FT) NORTHEAST OF THE EDGE OF THE
 JV6474'TREES AND 0.4 M (1.3 FT) EAST OF A FIBERGLASS WITNESS POST.
 JV6474
 JV6474                          STATION RECOVERY (1994)
 JV6474
 JV6474'RECOVERY NOTE BY MEASUREMENT SCIENCE INCORPORATED 1994 (BAC)
 JV6474'RECOVERED AS DESCRIBED BY MEASUREMENT SCIENCE, INC. (1994).
 JV6474
 JV6474                          STATION RECOVERY (1995)
 JV6474
 JV6474'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6474'RECOVERED AS DESCRIBED.
 JV6474
 JV6474                          STATION RECOVERY (2000)
 JV6474
 JV6474'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6474'RECOVERED AS DESCRIBED.  THE STATION IS ALSO 82.5 FEET (25.1 M)
 JV6474'SOUTHWEST OF THE SOUTHWEST END OF A 6 FOOT (1.8 M) HIGH CHAIN LINK
 JV6474'FENCE AROUND THE BASEBALL DIAMOND.
 JV6474
 JV6474                          STATION RECOVERY (2000)
 JV6474
 JV6474'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 JV6474'COULD NOT ACCESS, MUST NOTIFY SCHOOL.
 JV6474
 JV6474                          STATION RECOVERY (2000)
 JV6474
 JV6474'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2000 (TL)
 JV6474'MUST NOTIFY SCHOOL IN ORDER TO ACCESS.
 JV6474
 JV6474                          STATION RECOVERY (2000)
 JV6474
 JV6474'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV6474'RECOVERED AS DESCRIBED IN GOOD CONDITION.
 JV6474
 JV6474                          STATION RECOVERY (2006)
 JV6474
 JV6474'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV6474'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 GV3607 ***********************************************************************
 GV3607  DESIGNATION -  HOG
 GV3607  PID         -  GV3607
 GV3607  STATE/COUNTY-  MD/SOMERSET
 GV3607  COUNTRY     -  US
 GV3607  USGS QUAD   -  EWELL (2016)
 GV3607
 GV3607                         *CURRENT SURVEY CONTROL
 GV3607  ______________________________________________________________________
 GV3607* NAD 83(1993) POSITION- 37 58 17.36814(N) 076 02 53.21323(W)   ADJUSTED
 GV3607* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 GV3607  ______________________________________________________________________
 GV3607  GEOID HEIGHT    -        -35.956 (meters)                     GEOID18
 GV3607  LAPLACE CORR    -         -1.82  (seconds)                    DEFLEC18
 GV3607  HORZ ORDER      -  THIRD
 GV3607
 GV3607.The horizontal coordinates were established by classical geodetic methods
 GV3607.and adjusted by the National Geodetic Survey in November 1994.
 GV3607
 GV3607.The orthometric height was scaled from a topographic map.
 GV3607
 GV3607.Significant digits in the geoid height do not necessarily reflect accuracy.
 GV3607.GEOID18 height accuracy estimate available here.
 GV3607
 GV3607.Click photographs - Photos may exist for this station.
 GV3607
 GV3607.The Laplace correction was computed from DEFLEC18 derived deflections.
 GV3607
 GV3607. The following values were computed from the NAD 83(1993) position.
 GV3607
 GV3607;                    North         East     Units Scale Factor Converg.
 GV3607;SPC MD       -    34,273.534   483,643.398   MT  1.00007337   +0 35 50.8
 GV3607;SPC MD       -   112,445.75  1,586,753.38   sFT  1.00007337   +0 35 50.8
 GV3607;SPC VA S     - 1,184,598.680 3,715,414.425   MT  1.00000088   +1 29 17.2
 GV3607;SPC VA S     - 3,886,470.84 12,189,655.49   sFT  1.00000088   +1 29 17.2
 GV3607;UTM  18      - 4,203,170.011   407,941.449   MT  0.99970438   -0 38 41.7
 GV3607
 GV3607!             -  Elev Factor  x  Scale Factor =   Combined Factor
 GV3607!SPC MD       -   1.00000570  x   1.00007337  =   1.00007907
 GV3607!SPC VA S     -   1.00000570  x   1.00000088  =   1.00000658
 GV3607!UTM  18      -   1.00000570  x   0.99970438  =   0.99971008
 GV3607
 GV3607:                Primary Azimuth Mark                     Grid Az
 GV3607:SPC MD       -  SHANKS HAMMOCK 2                         173 17 21.4
 GV3607:SPC VA S     -  SHANKS HAMMOCK 2                         172 23 55.0
 GV3607:UTM  18      -  SHANKS HAMMOCK 2                         174 31 53.9
 GV3607
 GV3607_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0794103170(NAD 83)
 GV3607
 GV3607|---------------------------------------------------------------------|
 GV3607| PID    Reference Object                     Distance      Geod. Az  |
 GV3607|                                                           dddmmss.s |
 GV3607| GV3610 SMITH IS NORTH END CHURCH           APPROX. 2.9 KM 0261707.5 |
 GV3607| GV3603 SMITH ISLAND OLD CHURCH SPIRE       APPROX. 0.9 KM 0360606.8 |
 GV3607| GV3602 SHANKS HAMMOCK 2                    APPROX. 5.5 KM 1735312.2 |
 GV3607|---------------------------------------------------------------------|
 GV3607
 GV3607                          SUPERSEDED SURVEY CONTROL
 GV3607
 GV3607  NAD 83(1991)-  37 58 17.36967(N)    076 02 53.21870(W) AD(       ) 3
 GV3607  NAD 83(1986)-  37 58 17.36801(N)    076 02 53.23590(W) AD(       ) 3
 GV3607  NAD 27      -  37 58 17.01800(N)    076 02 54.49800(W) AD(       ) 3
 GV3607  USSD        -  37 58 17.32900(N)    076 02 54.22800(W) AD(       ) 3
 GV3607
 GV3607.Superseded values are not recommended for survey control.
 GV3607
 GV3607.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 GV3607.See file dsdata.pdf to determine how the superseded data were derived.
 GV3607
 GV3607_MARKER: T = CHISELED TRIANGLE
 GV3607_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 GV3607_STAMPING: C.G.S. 1910
 GV3607_MARK LOGO: CGS
 GV3607_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 GV3607+STABILITY: SURFACE MOTION
 GV3607
 GV3607  HISTORY     - Date     Condition        Report By
 GV3607  HISTORY     - 1911     MONUMENTED       CGS
 GV3607  HISTORY     - 1942     MARK NOT FOUND   CGS
 GV3607
 GV3607                          STATION DESCRIPTION
 GV3607
 GV3607'DESCRIBED BY COAST AND GEODETIC SURVEY 1911 (JBB)
 GV3607'STATION IS ON THE W SIDE OF SMITH ISLAND, ON THE N SIDE OF THE
 GV3607'ENTRANCE TO THE SOUTHERNMOST OF TWO CREEKS, 300 FEET N OF THE
 GV3607'MOUTH OF THE CREEK, 36 FEET E OF THE SHORE LINE, AND 6 FEET W OF
 GV3607'A CLUMP OF BUSHES.  MARKED BY A CEMENT BLOCK 6 BY 6 BY 24 INCHES
 GV3607'WITH A TRIANGLE, THE YEAR 1910 AND THE LETTERS C.G.S. CUT IN
 GV3607'ITS TOP.
 GV3607
 GV3607                          STATION RECOVERY (1942)
 GV3607
 GV3607'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 GV3607'THIS STATION WAS SEARCHED FOR THOROUGHLY BUT NOT FOUND.  THE ENTIRE
 GV3607'ISLAND HAS WASHED BADLY AND IT IS BELIEVED THAT THE MARK HAS
 GV3607'WASHED OUT.  IT IS RECOMMENDED THAT THE STATION BE CLASSIFIED AS
 GV3607'DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6669 ***********************************************************************
 HV6669  DESIGNATION -  HOG 2 1898
 HV6669  PID         -  HV6669
 HV6669  STATE/COUNTY-  MD/ST MARYS
 HV6669  COUNTRY     -  US
 HV6669  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6669
 HV6669                         *CURRENT SURVEY CONTROL
 HV6669  ______________________________________________________________________
 HV6669* NAD 83(1991) POSITION- 38 18 35.95586(N) 076 23 58.79750(W)   ADJUSTED
 HV6669* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6669  ______________________________________________________________________
 HV6669  GEOID HEIGHT    -        -34.578 (meters)                     GEOID18
 HV6669  LAPLACE CORR    -         -5.52  (seconds)                    DEFLEC18
 HV6669  HORZ ORDER      -  THIRD
 HV6669
 HV6669.The horizontal coordinates were established by classical geodetic methods
 HV6669.and adjusted by the National Geodetic Survey in January 1992.
 HV6669
 HV6669.The orthometric height was scaled from a topographic map.
 HV6669
 HV6669.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6669.GEOID18 height accuracy estimate available here.
 HV6669
 HV6669.Click photographs - Photos may exist for this station.
 HV6669
 HV6669.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6669
 HV6669. The following values were computed from the NAD 83(1991) position.
 HV6669
 HV6669;                    North         East     Units Scale Factor Converg.
 HV6669;SPC MD       -    71,584.161   452,505.617   MT  0.99999828   +0 22 36.4
 HV6669;SPC MD       -   234,855.70  1,484,595.51   sFT  0.99999828   +0 22 36.4
 HV6669;UTM  18      - 4,241,136.395   377,629.301   MT  0.99978442   -0 52 04.0
 HV6669
 HV6669!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6669!SPC MD       -   1.00000546  x   0.99999828  =   1.00000374
 HV6669!UTM  18      -   1.00000546  x   0.99978442  =   0.99978988
 HV6669
 HV6669:                Primary Azimuth Mark                     Grid Az
 HV6669:SPC MD       -  CARROLL 2                                247 15 57.3
 HV6669:UTM  18      -  CARROLL 2                                248 30 37.7
 HV6669
 HV6669_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7762941136(NAD 83)
 HV6669
 HV6669|---------------------------------------------------------------------|
 HV6669| PID    Reference Object                     Distance      Geod. Az  |
 HV6669|                                                           dddmmss.s |
 HV6669| HV6670 CARROLL 2                           APPROX. 1.6 KM 2473833.7 |
 HV6669| HV6711 SOLOMONS ISLAND ME CHURCH           APPROX. 5.5 KM 2853207.3 |
 HV6669|---------------------------------------------------------------------|
 HV6669
 HV6669                          SUPERSEDED SURVEY CONTROL
 HV6669
 HV6669  NAD 83(1986)-  38 18 35.95586(N)    076 23 58.81328(W) AD(       ) 3
 HV6669  NAD 27      -  38 18 35.51700(N)    076 23 59.99900(W) AD(       ) 3
 HV6669  USSD        -  38 18 35.88200(N)    076 23 59.75200(W) AD(       ) 3
 HV6669
 HV6669.Superseded values are not recommended for survey control.
 HV6669
 HV6669.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6669.See file dsdata.pdf to determine how the superseded data were derived.
 HV6669
 HV6669
 HV6669  HISTORY     - Date     Condition        Report By
 HV6669  HISTORY     - 1898     MONUMENTED       CGS
 HV6669  HISTORY     - 1908     SEE DESCRIPTION  CGS
 HV6669  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6669
 HV6669                          STATION DESCRIPTION
 HV6669
 HV6669'DESCRIBED BY COAST AND GEODETIC SURVEY 1908
 HV6669'STATION IS ON THE SOUTHERN SHORE OF THE ENTRANCE TO PATUXENT
 HV6669'RIVER, ON HOG POINT, ABOUT 1-7/8 MILES WNW OF CEDAR POINT
 HV6669'LIGHT.  STATION IS ON A SAND BEACH AT HIGH-WATER MARK, 30
 HV6669'YARDS NW OF POINT OF WOODS, AND 200 YARDS NNE OF NEAREST SHORE
 HV6669'OF PARSONS CREEK.  STATION IS MARKED BY A SPIKE SET IN CEMENT
 HV6669'IN TOP OF A 6-INCH TILE PIPE WITH TOP 1 FOOT BELOW SURFACE OF
 HV6669'GROUND.  BENEATH THIS PIPE AND CONCENTRIC WITH IT IS ANOTHER
 HV6669'TILE PIPE.
 HV6669'
 HV6669'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 HV6669'A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6669'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HV6669'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV6669'TOP OF POST.  IT IS ON A POINT OF HIGH LAND, AND 33.35 METERS
 HV6669'(109.4 FEET) FROM STATION S 42 DEG 22 MIN E.  DISTANCES
 HV6669'AND BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE
 HV6669'AS FOLLOWS--CABIN ON OPPOSITE SIDE OF PARSONS CREEK, 3/4 MILE,
 HV6669'S 2 DEG 21 MIN W.  CHIMNEY ON SUSQUEHANNA FARMHOUSE, 1 MILE, S 60
 HV6669'DEG 20 MIN W.  STEEPLE OF VALES HOUSE AT AVONDALE, 3-1/2
 HV6669'MILES, N 69 DEG 49 MIN W.  CHIMNEY OF CABIN ON OPPOSITE SHORE,
 HV6669'1-1/2 MILES, N 38 DEG 24 MIN W.  NAIL IN BLAZE IN PINE TREE,
 HV6669'29.58 METERS (97.0 FEET), S 39 DEG 41 MIN E.
 HV6669
 HV6669                          STATION RECOVERY (1942)
 HV6669
 HV6669'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6669'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED
 HV6669'FOR BY TWO MEN FOR 1-1/2 HOURS, BUT NO TRACE OF THEM COULD BE
 HV6669'FOUND.  THE BANK IS CAVING RAPIDLY.  THIS STATION AND ITS
 HV6669'REFERENCE MARK ARE PROBABLY DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1856 ***********************************************************************
 HU1856  DESIGNATION -  HOLLAND
 HU1856  PID         -  HU1856
 HU1856  STATE/COUNTY-  MD/WICOMICO
 HU1856  COUNTRY     -  US
 HU1856  USGS QUAD   -  MONIE (2016)
 HU1856
 HU1856                         *CURRENT SURVEY CONTROL
 HU1856  ______________________________________________________________________
 HU1856* NAD 83(1991) POSITION- 38 14 49.89364(N) 075 51 07.88927(W)   ADJUSTED
 HU1856* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1856  ______________________________________________________________________
 HU1856  GEOID HEIGHT    -        -35.813 (meters)                     GEOID18
 HU1856  LAPLACE CORR    -         -1.99  (seconds)                    DEFLEC18
 HU1856  HORZ ORDER      -  THIRD
 HU1856
 HU1856.The horizontal coordinates were established by classical geodetic methods
 HU1856.and adjusted by the National Geodetic Survey in January 1992.
 HU1856
 HU1856.The orthometric height was scaled from a topographic map.
 HU1856
 HU1856.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1856.GEOID18 height accuracy estimate available here.
 HU1856
 HU1856.Click photographs - Photos may exist for this station.
 HU1856
 HU1856.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1856
 HU1856. The following values were computed from the NAD 83(1991) position.
 HU1856
 HU1856;                    North         East     Units Scale Factor Converg.
 HU1856;SPC MD       -    65,072.785   500,473.823   MT  1.00000961   +0 43 13.5
 HU1856;SPC MD       -   213,492.96  1,641,971.20   sFT  1.00000961   +0 43 13.5
 HU1856;UTM  18      - 4,233,585.452   425,431.062   MT  0.99966848   -0 31 39.3
 HU1856
 HU1856!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1856!SPC MD       -   1.00000566  x   1.00000961  =   1.00001527
 HU1856!UTM  18      -   1.00000566  x   0.99966848  =   0.99967414
 HU1856
 HU1856:                Primary Azimuth Mark                     Grid Az
 HU1856:SPC MD       -  WIND                                     207 51 54.5
 HU1856:UTM  18      -  WIND                                     209 06 47.3
 HU1856
 HU1856_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2543133585(NAD 83)
 HU1856
 HU1856|---------------------------------------------------------------------|
 HU1856| PID    Reference Object                     Distance      Geod. Az  |
 HU1856|                                                           dddmmss.s |
 HU1856| HU1865 MOUNT VERNON CHURCH SPIRE           APPROX. 1.8 KM 1003410.6 |
 HU1856| HU1853 WIND                                APPROX. 1.8 KM 2083508.0 |
 HU1856|---------------------------------------------------------------------|
 HU1856
 HU1856                          SUPERSEDED SURVEY CONTROL
 HU1856
 HU1856  NAD 83(1986)-  38 14 49.89215(N)    075 51 07.91131(W) AD(       ) 3
 HU1856  NAD 27      -  38 14 49.44700(N)    075 51 09.15300(W) AD(       ) 3
 HU1856  USSD        -  38 14 49.83300(N)    075 51 08.87400(W) AD(       ) 3
 HU1856
 HU1856.Superseded values are not recommended for survey control.
 HU1856
 HU1856.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1856.See file dsdata.pdf to determine how the superseded data were derived.
 HU1856
 HU1856_MARKER: H = DRILL HOLE
 HU1856_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1856_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1856+STABILITY: SURFACE MOTION
 HU1856
 HU1856  HISTORY     - Date     Condition        Report By
 HU1856  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1856  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1856
 HU1856                          STATION DESCRIPTION
 HU1856
 HU1856'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1856'STATION IS ON THE N SHORE OF THE WICOMICO RIVER, ON HOLLAND POINT,
 HU1856'ABOUT 1-1/4 MILES E OF ELLIS BAY.  STATION IS ON A MARSH POINT
 HU1856'ABOUT 20 YARDS N OF HIGH-WATER MARK ON EXTREME END POINT AND 100
 HU1856'YARDS W OF A CREEK.  STATION MARK IS MARKED BY A HOLE IN THE
 HU1856'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HU1856'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HU1856'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HU1856'ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES AND BEARINGS TO
 HU1856'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--CHIMNEY OF HOUSE
 HU1856'NEAR ELLIS BAY, 1-1/4 MILES, S 74 DEG 54 MIN W.  CHIMNEY OF CABIN,
 HU1856'200 YARDS, S 84 DEG 49 MIN W.  CHIMNEY ON LEFT END OF LARGE
 HU1856'RED-ROOF BUILDING, 3 MILES, N 59 DEG 29 MIN W.  LARGE CHIMNEY ON
 HU1856'WHITE HOUSE, 1-1/4 MILES, N 37 DEG 06 MIN E.  CHIMNEY OF
 HU1856'SLATE-COLORED HOUSE, 1-1/4 MILES, N 79 DEG 18 MIN E.  CHIMNEY
 HU1856'ON MIDDLE OF LIGHT-BLUE HOUSE, 1 MILE, N 89 DEG 23 MIN E.  CHIMNEY
 HU1856'ON 2 1/2-STORY LIGHT-GREEN HOUSE, 3/4 MILE, S 64 DEG 44 MIN E.
 HU1856'RIGHT CHIMNEY ON WHITE HOUSE, 1/2 MILE, S 13 DEG 56 MIN E.
 HU1856
 HU1856                          STATION RECOVERY (1942)
 HU1856
 HU1856'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1856'THIS STATION WAS SEARCHED FOR THOROUGHLY FOR TWO HOURS BY TWO
 HU1856'MEN.  NO TRACE OF THIS STATION COULD BE FOUND.  IT IS RECOMMENDED
 HU1856'THAT THIS STATION BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7264 ***********************************************************************
 HV7264  DESIGNATION -  HOLLAND
 HV7264  PID         -  HV7264
 HV7264  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7264  COUNTRY     -  US
 HV7264  USGS QUAD   -  NORTH BEACH (2016)
 HV7264
 HV7264                         *CURRENT SURVEY CONTROL
 HV7264  ______________________________________________________________________
 HV7264* NAD 83(1991) POSITION- 38 43 40.67786(N) 076 31 36.81532(W)   ADJUSTED
 HV7264* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7264  ______________________________________________________________________
 HV7264  GEOID HEIGHT    -        -33.641 (meters)                     GEOID18
 HV7264  LAPLACE CORR    -         -4.42  (seconds)                    DEFLEC18
 HV7264  HORZ ORDER      -  THIRD
 HV7264
 HV7264.The horizontal coordinates were established by classical geodetic methods
 HV7264.and adjusted by the National Geodetic Survey in January 1992.
 HV7264
 HV7264.The orthometric height was scaled from a topographic map.
 HV7264
 HV7264.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7264.GEOID18 height accuracy estimate available here.
 HV7264
 HV7264.Click photographs - Photos may exist for this station.
 HV7264
 HV7264.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7264
 HV7264. The following values were computed from the NAD 83(1991) position.
 HV7264
 HV7264;                    North         East     Units Scale Factor Converg.
 HV7264;SPC MD       -   117,915.022   441,137.903   MT  0.99995316   +0 17 49.0
 HV7264;SPC MD       -   386,859.53  1,447,299.94   sFT  0.99995316   +0 17 49.0
 HV7264;UTM  18      - 4,287,695.958   367,275.414   MT  0.99981693   -0 57 19.4
 HV7264
 HV7264!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7264!SPC MD       -   1.00000532  x   0.99995316  =   0.99995848
 HV7264!UTM  18      -   1.00000532  x   0.99981693  =   0.99982224
 HV7264
 HV7264:                Primary Azimuth Mark                     Grid Az
 HV7264:SPC MD       -  FAIRHAVEN 2                              311 29 17.4
 HV7264:UTM  18      -  FAIRHAVEN 2                              312 44 25.8
 HV7264
 HV7264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6727587695(NAD 83)
 HV7264
 HV7264|---------------------------------------------------------------------|
 HV7264| PID    Reference Object                     Distance      Geod. Az  |
 HV7264|                                                           dddmmss.s |
 HV7264| CX2895 HOLLAND RM                           12.880 METERS 21352     |
 HV7264| HV7198 FAIRHAVEN 2                         APPROX. 4.4 KM 3114706.4 |
 HV7264|---------------------------------------------------------------------|
 HV7264
 HV7264                          SUPERSEDED SURVEY CONTROL
 HV7264
 HV7264  NAD 83(1986)-  38 43 40.67560(N)    076 31 36.82822(W) AD(       ) 3
 HV7264  NAD 27      -  38 43 40.25100(N)    076 31 37.99400(W) AD(       ) 3
 HV7264  USSD        -  38 43 40.61900(N)    076 31 37.80200(W) AD(       ) 3
 HV7264
 HV7264.Superseded values are not recommended for survey control.
 HV7264
 HV7264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7264.See file dsdata.pdf to determine how the superseded data were derived.
 HV7264
 HV7264_MARKER: N = NAIL
 HV7264_SETTING: 0 = UNSPECIFIED SETTING
 HV7264
 HV7264  HISTORY     - Date     Condition        Report By
 HV7264  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7264  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7264  HISTORY     - 20031001 MARK NOT FOUND   USPSQD
 HV7264
 HV7264                          STATION DESCRIPTION
 HV7264
 HV7264'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7264'STATION IS ON THE WESTERN SHORE OF CHESAPEAKE BAY, ON THE S SIDE
 HV7264'OF THE ENTRANCE TO HERRING BAY, ABOUT 30 YARDS W OF HOLLAND POINT.
 HV7264'STATION IS 5 FEET BACK FROM TOP OF A 7-FOOT BANK.
 HV7264'
 HV7264'CENTER MARKED BY NAIL IN PINE STUB FLUSH WITH GROUND.
 HV7264'
 HV7264'REFERENCE STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF
 HV7264'A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7264'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7264'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7264'IS 12.88 METERS (42.3 FEET) FROM STATION IN BEARING S 33 DEG 52
 HV7264'MIN W.  A NAIL IN A BLAZE ON 30-INCH RED OAK TREE IS 11.17 METERS
 HV7264'(36.6 FEET) FROM STATION IN BEARING S 10 DEG 36 MIN W.  AND A
 HV7264'NAIL IN ANOTHER 30-INCH RED OAK TREE IS 22.63 METERS (74.2 FEET)
 HV7264'FROM STATION IN BEARING S 58 DEG 42 MIN W.
 HV7264
 HV7264                          STATION RECOVERY (1960)
 HV7264
 HV7264'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7264'STATION SEARCHED FOR BUT COULD NOT BE FOUND.  IT IS POSSIBLE IT
 HV7264'WAS DESTROYED BY EROSION AT THIS POINT.
 HV7264
 HV7264                          STATION RECOVERY (2003)
 HV7264
 HV7264'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7264'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7287 ***********************************************************************
 HV7287  DESIGNATION -  HOLLAND 3
 HV7287  PID         -  HV7287
 HV7287  STATE/COUNTY-  MD/CALVERT
 HV7287  COUNTRY     -  US
 HV7287  USGS QUAD   -  NORTH BEACH (2016)
 HV7287
 HV7287                         *CURRENT SURVEY CONTROL
 HV7287  ______________________________________________________________________
 HV7287* NAD 83(1991) POSITION- 38 42 42.44815(N) 076 31 42.04868(W)   ADJUSTED
 HV7287* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7287  ______________________________________________________________________
 HV7287  GEOID HEIGHT    -        -33.664 (meters)                     GEOID18
 HV7287  LAPLACE CORR    -         -4.69  (seconds)                    DEFLEC18
 HV7287  HORZ ORDER      -  THIRD
 HV7287
 HV7287.The horizontal coordinates were established by classical geodetic methods
 HV7287.and adjusted by the National Geodetic Survey in January 1992.
 HV7287
 HV7287.The orthometric height was scaled from a topographic map.
 HV7287
 HV7287.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7287.GEOID18 height accuracy estimate available here.
 HV7287
 HV7287.Click photographs - Photos may exist for this station.
 HV7287
 HV7287.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7287
 HV7287. The following values were computed from the NAD 83(1991) position.
 HV7287
 HV7287;                    North         East     Units Scale Factor Converg.
 HV7287;SPC MD       -   116,118.895   441,020.777   MT  0.99995392   +0 17 45.7
 HV7287;SPC MD       -   380,966.74  1,446,915.67   sFT  0.99995392   +0 17 45.7
 HV7287;UTM  18      - 4,285,903.065   367,119.086   MT  0.99981744   -0 57 21.5
 HV7287
 HV7287!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7287!SPC MD       -   1.00000532  x   0.99995392  =   0.99995924
 HV7287!UTM  18      -   1.00000532  x   0.99981744  =   0.99982276
 HV7287
 HV7287:                Primary Azimuth Mark                     Grid Az
 HV7287:SPC MD       -  SHARPS ISLAND LIGHTHOUSE                 120 56 17.9
 HV7287:UTM  18      -  SHARPS ISLAND LIGHTHOUSE                 122 11 25.1
 HV7287
 HV7287_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6711985903(NAD 83)
 HV7287
 HV7287|---------------------------------------------------------------------|
 HV7287| PID    Reference Object                     Distance      Geod. Az  |
 HV7287|                                                           dddmmss.s |
 HV7287| CX2893 HOLLAND 3 RM B                        9.380 METERS 04358     |
 HV7287| CX2894 HOLLAND 3 RM C                       17.440 METERS 09823     |
 HV7287| HV6142 SHARPS ISLAND LIGHTHOUSE            APPROX.15.5 KM 1211403.6 |
 HV7287| CX2892 HOLLAND 3 RM A                        6.150 METERS 15042     |
 HV7287| CX2103 BLAZE IN PIN OAK                      7.980 METERS 31128     |
 HV7287|---------------------------------------------------------------------|
 HV7287
 HV7287                          SUPERSEDED SURVEY CONTROL
 HV7287
 HV7287  NAD 83(1986)-  38 42 42.44596(N)    076 31 42.06167(W) AD(       ) 3
 HV7287  NAD 27      -  38 42 42.00000(N)    076 31 43.18600(W) AD(       ) 3
 HV7287  USSD        -  38 42 42.39400(N)    076 31 43.01700(W) AD(       ) 3
 HV7287
 HV7287.Superseded values are not recommended for survey control.
 HV7287
 HV7287.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7287.See file dsdata.pdf to determine how the superseded data were derived.
 HV7287
 HV7287_MARKER: N = NAIL
 HV7287_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV7287_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV7287
 HV7287  HISTORY     - Date     Condition        Report By
 HV7287  HISTORY     - 1907     MONUMENTED       CGS
 HV7287  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7287
 HV7287                          STATION DESCRIPTION
 HV7287
 HV7287'DESCRIBED BY COAST AND GEODETIC SURVEY 1907 (CMS)
 HV7287'STATION IS ON THE WESTERN SHORE OF CHESAPEAKE BAY, ABOUT HALFWAY
 HV7287'BETWEEN HERRING BAY AND CHESAPEAKE BEACH, ON HOG POINT, NEAR END
 HV7287'OF BOUNDARY LINE BETWEEN CALVERT AND ANNE ARUNDEL COUNTIES.
 HV7287'STATION IS ABOUT 5 FEET ABOVE HIGH WATER, ON A NARROW STRIP OF
 HV7287'SOLID LAND 25 YARDS BY 10 YARDS IN SIZE BETWEEN EDGE OF LARGE
 HV7287'MARSH AND BAY SHORE, ABOUT 60 YARDS N OF POINT WHERE THE SHORE
 HV7287'LINE CHANGES DIRECTION FROM N AND S TO NE AND SW.  STATION IS
 HV7287'ABOUT 4 YARDS W OF BAY SHORE, 4 YARDS E OF TOP EDGE OF HUMMOCK
 HV7287'NEAR MARSH, 7 YARDS E OF EDGE OF MARSH, 9 YARDS NNW OF POINT OF
 HV7287'HUMMOCK, AND 18 YARDS S BY W OF POINT OF ANOTHER HUMMOCK.
 HV7287'
 HV7287'STATION MARKED UNDERGROUND BY TWO HEXAGONAL DRAINTILES ABOUT 14
 HV7287'INCHES LONG SET ONE ABOVE THE OTHER AND EMBEDDED IN CEMENT.  THE
 HV7287'TOP OF THE UPPER TILE IS 3 FEET BELOW THE SURFACE OF THE GROUND.
 HV7287'SURFACE MARK IS 6-INCH TILE PIPE SET IN CEMENT WITH TOP FLUSH WITH
 HV7287'GROUND.  A NAIL IN TOP MARKS CENTER, AND THE LETTERS U.S.C. AND
 HV7287'G.S. 1907 ARE ROUGHLY MARKED IN THE CEMENT.
 HV7287'
 HV7287'REFERENCE MARK SET IN 1907 IS SIMILAR TO THE CENTER MARK, EXCEPT
 HV7287'THAT ONLY ONE TILE WAS USED IN THE SUBSURFACE MARK.  IT IS 11.13
 HV7287'METERS (36.5 FEET) FROM STATION N 16 DEG 37 MIN E.  REFERENCE
 HV7287'MARK OF 1908 IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7287'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7287'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7287'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7287'IS 2.13 METERS (6.99 FEET) FROM STATION S 80 DEG 38 MIN W.
 HV7287'DISTANCES AND BEARINGS TO OTHER POINTS OF REFERENCE ARE AS
 HV7287'FOLLOWS--FLAGSTAFF ON CENTER OF CARROUSEL ROOF, 1-5/8 MILES, S 6
 HV7287'DEG 03 MIN W.  LARGE BRICK CHIMNEY, 2 MILES, S 16 DEG 48 MIN W.
 HV7287'WATER TANK, 2 MILES, S 17 DEG 59 MIN W.  NAIL IN BLAZE IN 16-INCH
 HV7287'WHITE OAK, 6.32 METERS (20.73 FEET), S 79 DEG 54 MIN W. NAIL IN
 HV7287'BLAZE IN 18-INCH PIN OAK, 7.98 METERS (26.18 FEET), N 48 DEG 32
 HV7287'MIN E. NAIL IN BLAZE IN 16-INCH OAK, 17.65 METERS (57.9 FEET), N 2
 HV7287'DEG 32 MIN W.  NAIL IN BLAZE IN 18-INCH PIN OAK, 21.96 METERS
 HV7287'(72.0 FEET), N 11 DEG 16 MIN E.  LEFT TANGENT N CHESAPEAKE BEACH
 HV7287'WHARF, 3/4 MILE, S 0 DEG 30 MIN E.
 HV7287
 HV7287                          STATION RECOVERY (1960)
 HV7287
 HV7287'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7287'STATION SEARCHED FOR BUT COULD NOT BE FOUND.  IT IS POSSIBLE IT
 HV7287'WAS DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4703 ***********************************************************************
 AB4703  DESIGNATION -  HOLLAND AZ MK
 AB4703  PID         -  AB4703
 AB4703  STATE/COUNTY-  MD/CARROLL
 AB4703  COUNTRY     -  US
 AB4703  USGS QUAD   -  MANCHESTER (2016)
 AB4703
 AB4703                         *CURRENT SURVEY CONTROL
 AB4703  ______________________________________________________________________
 AB4703* NAD 83(2011) POSITION- 39 41 44.12172(N) 076 57 33.40723(W)   ADJUSTED
 AB4703* NAD 83(2011) ELLIP HT-   217.324 (meters)        (06/27/12)   ADJUSTED
 AB4703* NAD 83(2011) EPOCH   -  2010.00
 AB4703* NAVD 88 ORTHO HEIGHT -   249.9   (meters)      820.    (feet) GPS OBS
 AB4703  ______________________________________________________________________
 AB4703  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4703  GEOID HEIGHT    -        -32.575 (meters)                     GEOID99
 AB4703  GEOID HEIGHT    -        -32.567 (meters)                     GEOID18
 AB4703  NAD 83(2011) X  -  1,108,932.047 (meters)                     COMP
 AB4703  NAD 83(2011) Y  - -4,787,785.627 (meters)                     COMP
 AB4703  NAD 83(2011) Z  -  4,052,175.073 (meters)                     COMP
 AB4703  LAPLACE CORR    -          4.64  (seconds)                    DEFLEC18
 AB4703
 AB4703  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4703  Standards:
 AB4703         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4703            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4703  -------------------------------------------------------------------
 AB4703  NETWORK    1.16   3.88           0.49   0.45   1.98      0.17929170
 AB4703  -------------------------------------------------------------------
 AB4703  Click here for local accuracies and other accuracy information.
 AB4703
 AB4703.The horizontal coordinates were established by GPS observations
 AB4703.and adjusted by the National Geodetic Survey in June 2012.
 AB4703
 AB4703.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4703.been affixed to the stable North American tectonic plate. See 
 AB4703.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4703
 AB4703.The horizontal coordinates are valid at the epoch date displayed above
 AB4703.which is a decimal equivalence of Year/Month/Day.
 AB4703
 AB4703.The orthometric height was determined by GPS observations and a
 AB4703.high-resolution geoid model.
 AB4703
 AB4703.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4703.GEOID18 height accuracy estimate available here.
 AB4703
 AB4703.Click photographs - Photos may exist for this station.
 AB4703
 AB4703.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4703
 AB4703.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4703
 AB4703.The ellipsoidal height was determined by GPS observations
 AB4703.and is referenced to NAD 83.
 AB4703
 AB4703. The following values were computed from the NAD 83(2011) position.
 AB4703
 AB4703;                    North         East     Units Scale Factor Converg.
 AB4703;SPC MD       -   225,232.018   403,492.830   MT  1.00005220   +0 01 32.0
 AB4703;SPC MD       -   738,948.71  1,323,792.73   sFT  1.00005220   +0 01 32.0
 AB4703;UTM  18      - 4,395,806.450   332,010.088   MT  0.99994745   -1 15 06.1
 AB4703
 AB4703!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4703!SPC MD       -   0.99996591  x   1.00005220  =   1.00001810
 AB4703!UTM  18      -   0.99996591  x   0.99994745  =   0.99991336
 AB4703
 AB4703_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3201095806(NAD 83)
 AB4703
 AB4703                          SUPERSEDED SURVEY CONTROL
 AB4703
 AB4703  NAD 83(2007)-  39 41 44.12198(N)    076 57 33.40790(W) AD(2002.00) 0
 AB4703  ELLIP H (02/10/07)  217.342  (m)                       GP(2002.00)    
 AB4703  ELLIP H (08/30/02)  217.320  (m)                       GP(       ) 4 2
 AB4703  NAD 83(1991)-  39 41 44.12139(N)    076 57 33.40846(W) AD(       ) 1
 AB4703  ELLIP H (07/03/96)  217.257  (m)                       GP(       ) 1 1
 AB4703  NAVD 88 (07/03/96)  249.9    (m)  GEOID93  model used  GPS OBS        
 AB4703
 AB4703.Superseded values are not recommended for survey control.
 AB4703
 AB4703.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4703.See file dsdata.pdf to determine how the superseded data were derived.
 AB4703
 AB4703_MARKER: DD = SURVEY DISK
 AB4703_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4703_STAMPING: HOLLAND AZI 1995
 AB4703_MARK LOGO: MD-013
 AB4703_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4703_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4703+STABILITY: SURFACE MOTION
 AB4703_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4703+SATELLITE: SATELLITE OBSERVATIONS - June 11, 2007
 AB4703
 AB4703  HISTORY     - Date     Condition        Report By
 AB4703  HISTORY     - 1995     MONUMENTED       MD-013
 AB4703  HISTORY     - 20070611 GOOD             GPSSS
 AB4703
 AB4703                          STATION DESCRIPTION
 AB4703
 AB4703'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4703'STATION IS LOCATED ABOUT 8.5 MI (13.7 KM) NORTHEAST OF WESTMINSTER AND
 AB4703'ABOUT 4.5 MI (7.2 KM) NORTHWEST OF MANCHESTER. TO REACH STATION FROM
 AB4703'THE INTERSECTION OF MD ROUTE 30 (HANOVER PIKE) AND MD ROUTE 496
 AB4703'(BACHMAN VALLEY ROAD) GO NORTH ON MD ROUTE 30 FOR 0.6 MI (1.0 KM) TO
 AB4703'THE INTERSECTION WITH DEEP RUN ROAD. TURN LEFT ON DEEP RUN ROAD AND GO
 AB4703'SOUTH FOR 2.8 MI (4.5 KM) TO THE STATION ON THE RIGHT. STATION IS
 AB4703'ABOUT 550 FT (167.6 M) BEFORE THE INTERSECTION WITH BAND HALL HILL
 AB4703'ROAD TO THE RIGHT AND RINEHART ROAD TO THE LEFT. STATION MARK IS SET
 AB4703'IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4703'GROUND. IT IS 15.0 FT (4.6 M) NORTH OF THE CENTERLINE OF THE ROAD,
 AB4703'12.0 FT (3.7 M) EAST OF TELEPHONE POLE NO.6.5 AND 4.3 FT (1.3 M) SOUTH
 AB4703'OF A WIRE FENCE.
 AB4703
 AB4703                          STATION RECOVERY (2007)
 AB4703
 AB4703'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (SS)
 AB4703'RECOVERED BY STEVE SNYDER OF A.L.SNYDER SURVEYING
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6496 ***********************************************************************
 HV6496  DESIGNATION -  HOLLAND ISLAND 2 1898
 HV6496  PID         -  HV6496
 HV6496  STATE/COUNTY-  MD/DORCHESTER
 HV6496  COUNTRY     -  US
 HV6496  USGS QUAD   -  KEDGES STRAITS (2016)
 HV6496
 HV6496                         *CURRENT SURVEY CONTROL
 HV6496  ______________________________________________________________________
 HV6496* NAD 83(1993) POSITION- 38 06 40.96713(N) 076 05 32.64728(W)   ADJUSTED
 HV6496* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6496  ______________________________________________________________________
 HV6496  GEOID HEIGHT    -        -35.712 (meters)                     GEOID18
 HV6496  LAPLACE CORR    -         -1.90  (seconds)                    DEFLEC18
 HV6496  HORZ ORDER      -  THIRD
 HV6496
 HV6496.The horizontal coordinates were established by classical geodetic methods
 HV6496.and adjusted by the National Geodetic Survey in November 1994.
 HV6496
 HV6496.The orthometric height was scaled from a topographic map.
 HV6496
 HV6496.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6496.GEOID18 height accuracy estimate available here.
 HV6496
 HV6496.Click photographs - Photos may exist for this station.
 HV6496
 HV6496.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6496
 HV6496. The following values were computed from the NAD 83(1993) position.
 HV6496
 HV6496;                    North         East     Units Scale Factor Converg.
 HV6496;SPC MD       -    49,761.243   479,597.572   MT  1.00003816   +0 34 10.7
 HV6496;SPC MD       -   163,258.34  1,573,479.70   sFT  1.00003816   +0 34 10.7
 HV6496;UTM  18      - 4,218,736.450   404,233.865   MT  0.99971295   -0 40 27.4
 HV6496
 HV6496!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6496!SPC MD       -   1.00000565  x   1.00003816  =   1.00004381
 HV6496!UTM  18      -   1.00000565  x   0.99971295  =   0.99971860
 HV6496
 HV6496:                Primary Azimuth Mark                     Grid Az
 HV6496:SPC MD       -  HOLLAND ISLAND BAR LH                    183 02 23.9
 HV6496:UTM  18      -  HOLLAND ISLAND BAR LH                    184 17 02.0
 HV6496
 HV6496_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0423318736(NAD 83)
 HV6496
 HV6496|---------------------------------------------------------------------|
 HV6496| PID    Reference Object                     Distance      Geod. Az  |
 HV6496|                                                           dddmmss.s |
 HV6496| HV6500 HOLLAND ISLAND BAR LH               APPROX. 4.7 KM 1833634.6 |
 HV6496|---------------------------------------------------------------------|
 HV6496
 HV6496                          SUPERSEDED SURVEY CONTROL
 HV6496
 HV6496  NAD 83(1991)-  38 06 40.96704(N)    076 05 32.64840(W) AD(       ) 3
 HV6496  NAD 83(1986)-  38 06 40.96725(N)    076 05 32.66667(W) AD(       ) 3
 HV6496  NAD 27      -  38 06 40.52700(N)    076 05 33.90800(W) AD(       ) 3
 HV6496  USSD        -  38 06 40.90200(N)    076 05 33.61600(W) AD(       ) 3
 HV6496
 HV6496.Superseded values are not recommended for survey control.
 HV6496
 HV6496.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6496.See file dsdata.pdf to determine how the superseded data were derived.
 HV6496
 HV6496
 HV6496  HISTORY     - Date     Condition        Report By
 HV6496  HISTORY     - 1898     MONUMENTED       CGS
 HV6496  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6496
 HV6496                          STATION DESCRIPTION
 HV6496
 HV6496'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6496'THIS STATION WAS SEARCHED FOR BUT NOT FOUND.  THE ISLAND HAS
 HV6496'WASHED BADLY AND THE AREA IN WHICH THE STATION WAS LOCATED HAS
 HV6496'BEEN BROKEN UP INTO A SMALL ISLAND AND IT IS BELIEVED THAT THE
 HV6496'MARK HAS BEEN WASHED OUT.
 HV6496'
 HV6496'IT IS RECOMMENDED THAT THE STATION BE CONSIDERED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7265 ***********************************************************************
 HV7265  DESIGNATION -  HOLLAND NORTH 2
 HV7265  PID         -  HV7265
 HV7265  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7265  COUNTRY     -  US
 HV7265  USGS QUAD   -  NORTH BEACH (2016)
 HV7265
 HV7265                         *CURRENT SURVEY CONTROL
 HV7265  ______________________________________________________________________
 HV7265* NAD 83(1991) POSITION- 38 43 41.23128(N) 076 31 35.84357(W)   ADJUSTED
 HV7265* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 HV7265  ______________________________________________________________________
 HV7265  GEOID HEIGHT    -        -33.641 (meters)                     GEOID18
 HV7265  LAPLACE CORR    -         -4.42  (seconds)                    DEFLEC18
 HV7265  HORZ ORDER      -  THIRD
 HV7265
 HV7265.The horizontal coordinates were established by classical geodetic methods
 HV7265.and adjusted by the National Geodetic Survey in January 1992.
 HV7265
 HV7265.The orthometric height was scaled from a topographic map.
 HV7265
 HV7265.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7265.GEOID18 height accuracy estimate available here.
 HV7265
 HV7265.Click photographs - Photos may exist for this station.
 HV7265
 HV7265.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7265
 HV7265. The following values were computed from the NAD 83(1991) position.
 HV7265
 HV7265;                    North         East     Units Scale Factor Converg.
 HV7265;SPC MD       -   117,932.208   441,161.286   MT  0.99995315   +0 17 49.6
 HV7265;SPC MD       -   386,915.92  1,447,376.65   sFT  0.99995315   +0 17 49.6
 HV7265;UTM  18      - 4,287,712.627   367,299.163   MT  0.99981685   -0 57 18.8
 HV7265
 HV7265!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7265!SPC MD       -   1.00000343  x   0.99995315  =   0.99995658
 HV7265!UTM  18      -   1.00000343  x   0.99981685  =   0.99982028
 HV7265
 HV7265:                Primary Azimuth Mark                     Grid Az
 HV7265:SPC MD       -  FAIRHAVEN 2                              311 07 16.7
 HV7265:UTM  18      -  FAIRHAVEN 2                              312 22 25.1
 HV7265
 HV7265_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6729987712(NAD 83)
 HV7265
 HV7265|---------------------------------------------------------------------|
 HV7265| PID    Reference Object                     Distance      Geod. Az  |
 HV7265|                                                           dddmmss.s |
 HV7265| HV7198 FAIRHAVEN 2                         APPROX. 4.4 KM 3112506.3 |
 HV7265|---------------------------------------------------------------------|
 HV7265
 HV7265                          SUPERSEDED SURVEY CONTROL
 HV7265
 HV7265  NAD 83(1986)-  38 43 41.22902(N)    076 31 35.85649(W) AD(       ) 3
 HV7265  NAD 27      -  38 43 40.80900(N)    076 31 37.02300(W) AD(       ) 3
 HV7265  USSD        -  38 43 41.17800(N)    076 31 36.83100(W) AD(       ) 3
 HV7265
 HV7265.Superseded values are not recommended for survey control.
 HV7265
 HV7265.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7265.See file dsdata.pdf to determine how the superseded data were derived.
 HV7265
 HV7265
 HV7265  HISTORY     - Date     Condition        Report By
 HV7265  HISTORY     - 1898     MONUMENTED       CGS
 HV7265  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7265
 HV7265                          STATION DESCRIPTION
 HV7265
 HV7265'DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7265'THIS STATION IS NOT PREVIOUSLY DESCRIBED.  IT NOW PLOTS ABOUT 100
 HV7265'METERS OFFSHORE IN THE BAY AND IS THEREFORE PRESUMED DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6776 ***********************************************************************
 JV6776  DESIGNATION -  HOLLIDAY
 JV6776  PID         -  JV6776
 JV6776  STATE/COUNTY-  MD/BALTIMORE
 JV6776  COUNTRY     -  US
 JV6776  USGS QUAD   -  NORRISVILLE (2016)
 JV6776
 JV6776                         *CURRENT SURVEY CONTROL
 JV6776  ______________________________________________________________________
 JV6776* NAD 83(2011) POSITION- 39 41 16.04728(N) 076 34 26.58379(W)   ADJUSTED
 JV6776* NAD 83(2011) ELLIP HT-   163.843 (meters)        (06/27/12)   ADJUSTED
 JV6776* NAD 83(2011) EPOCH   -  2010.00
 JV6776* NAVD 88 ORTHO HEIGHT -   196.2   (meters)      644.    (feet) VERTCON3
 JV6776  ______________________________________________________________________
 JV6776  GEOID HEIGHT    -        -32.410 (meters)                     GEOID18
 JV6776  NAD 83(2011) X  -  1,141,216.308 (meters)                     COMP
 JV6776  NAD 83(2011) Y  - -4,780,719.408 (meters)                     COMP
 JV6776  NAD 83(2011) Z  -  4,051,474.630 (meters)                     COMP
 JV6776  LAPLACE CORR    -         -2.61  (seconds)                    DEFLEC18
 JV6776
 JV6776  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6776  Standards:
 JV6776         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6776            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6776  -------------------------------------------------------------------
 JV6776  NETWORK    1.06   2.76           0.47   0.37   1.41      0.30002943
 JV6776  -------------------------------------------------------------------
 JV6776  Click here for local accuracies and other accuracy information.
 JV6776
 JV6776.The horizontal coordinates were established by GPS observations
 JV6776.and adjusted by the National Geodetic Survey in June 2012.
 JV6776
 JV6776.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6776.been affixed to the stable North American tectonic plate. See 
 JV6776.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6776
 JV6776.The horizontal coordinates are valid at the epoch date displayed above
 JV6776.which is a decimal equivalence of Year/Month/Day.
 JV6776
 JV6776.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6776.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6776
 JV6776.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6776.GEOID18 height accuracy estimate available here.
 JV6776
 JV6776.Click photographs - Photos may exist for this station.
 JV6776
 JV6776.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6776
 JV6776.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6776
 JV6776.The ellipsoidal height was determined by GPS observations
 JV6776.and is referenced to NAD 83.
 JV6776
 JV6776. The following values were computed from the NAD 83(2011) position.
 JV6776
 JV6776;                    North         East     Units Scale Factor Converg.
 JV6776;SPC MD       -   224,450.590   436,540.240   MT  1.00005026   +0 16 02.4
 JV6776;SPC MD       -   736,384.98  1,432,215.77   sFT  1.00005026   +0 16 02.4
 JV6776;SPC PA S     -    40,029.102   700,876.461   MT  1.00004746   +0 45 46.6
 JV6776;SPC PA S     -   131,328.81  2,299,458.86   sFT  1.00004746   +0 45 46.6
 JV6776;UTM  18      - 4,394,290.149   365,026.394   MT  0.99982429   -1 00 19.2
 JV6776
 JV6776!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6776!SPC MD       -   0.99997430  x   1.00005026  =   1.00002456
 JV6776!SPC PA S     -   0.99997430  x   1.00004746  =   1.00002176
 JV6776!UTM  18      -   0.99997430  x   0.99982429  =   0.99979859
 JV6776
 JV6776_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6502694290(NAD 83)
 JV6776
 JV6776|---------------------------------------------------------------------|
 JV6776| PID    Reference Object                     Distance      Geod. Az  |
 JV6776|                                                           dddmmss.s |
 JV6776| JV6777 HOLLIDAY AZ MK                      393.604 METERS 06813     |
 JV6776|---------------------------------------------------------------------|
 JV6776
 JV6776                          SUPERSEDED SURVEY CONTROL
 JV6776
 JV6776  NAD 83(2007)-  39 41 16.04751(N)    076 34 26.58452(W) AD(2002.00) 0
 JV6776  ELLIP H (02/10/07)  163.863  (m)                       GP(2002.00)    
 JV6776  ELLIP H (09/18/02)  163.867  (m)                       GP(       ) 4 2
 JV6776  NAD 83(1991)-  39 41 16.04774(N)    076 34 26.58314(W) AD(       ) 1
 JV6776  ELLIP H (01/27/92)  163.855  (m)                       GP(       ) 4 1
 JV6776  NAD 83(1986)-  39 41 16.04036(N)    076 34 26.58780(W) AD(       ) 1
 JV6776  NGVD 29 (06/18/91)  196.5    (m)  UNKNOWN  model used  GPS OBS        
 JV6776
 JV6776.Superseded values are not recommended for survey control.
 JV6776
 JV6776.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6776.See file dsdata.pdf to determine how the superseded data were derived.
 JV6776
 JV6776_MARKER: DD = SURVEY DISK
 JV6776_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6776_STAMPING: 115 HOLLIDAY 1989
 JV6776_MARK LOGO: MD-025
 JV6776_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6776_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6776+STABILITY: SURFACE MOTION
 JV6776_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6776+SATELLITE: SATELLITE OBSERVATIONS - February 08, 2013
 JV6776
 JV6776  HISTORY     - Date     Condition        Report By
 JV6776  HISTORY     - 1989     MONUMENTED       RDA
 JV6776  HISTORY     - 20130208 GOOD             GPSSS
 JV6776
 JV6776                          STATION DESCRIPTION
 JV6776
 JV6776'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6776'THE STATION IS LOCATED IN NORTHEASTERN BALTIMORE COUNTY MARYLAND ABOUT
 JV6776'1.5 MILES SOUTHWEST OF THE VILLAGE OF NORRISVILLE.
 JV6776'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 136 AND
 JV6776'STATE HIGHWAY 23 IN THE VILLAGE OF NORRISVILLE PROCEED SOUTH ALONG
 JV6776'HIGHWAY 23 0.39 MILES TO ITS INTERSECTION WITH JOLLY ACRES ROAD.  TURN
 JV6776'RIGHT AND PROCEED WEST ALONG JOLLY ACRES ROAD 0.6 MILES TO ITS
 JV6776'INTERSECTION WITH GREEN ROAD.  TURN RIGHT AND PROCEED WEST ALONG GREEN
 JV6776'ROAD 2.3 MILES ACROSS THE COUNTY LINE AND THE STATION ON THE RIGHT.
 JV6776'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6776'ABOUT 1 INCH BELOW GROUND STAMPED 115 HOLLIDAY 1989.  THE STATION IS
 JV6776'16.0 FEET SOUTH OF THE CENTERLINE OF GREEN ROAD, 18.0 FEET NORTHEAST
 JV6776'OF C AND P OF MARYLAND POLE NUMBER 34, AND 42.0 FEET SOUTHEAST OF G
 JV6776'AND E POLE NUMBER 179429.
 JV6776
 JV6776                          STATION RECOVERY (2013)
 JV6776
 JV6776'RECOVERY NOTE BY GPS SALES AND SERVICES 2013
 JV6776'RECOVERED BY TOM AND JOEL OF SURVEY SERVICES OF MARYLAND, LLC.
 JV6776'WARNING NOT TO PARK IN THE DRIVEWAY ACCROSS THE STREET BECAUSE OF A
 JV6776'AGAITATED LANDOWNER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6777 ***********************************************************************
 JV6777  DESIGNATION -  HOLLIDAY AZ MK
 JV6777  PID         -  JV6777
 JV6777  STATE/COUNTY-  MD/BALTIMORE
 JV6777  COUNTRY     -  US
 JV6777  USGS QUAD   -  NORRISVILLE (2016)
 JV6777
 JV6777                         *CURRENT SURVEY CONTROL
 JV6777  ______________________________________________________________________
 JV6777* NAD 83(2011) POSITION- 39 41 20.78386(N) 076 34 11.24502(W)   ADJUSTED
 JV6777* NAD 83(2011) ELLIP HT-   159.585 (meters)        (06/27/12)   ADJUSTED
 JV6777* NAD 83(2011) EPOCH   -  2010.00
 JV6777* NAVD 88 ORTHO HEIGHT -   192.0   (meters)      630.    (feet) VERTCON3
 JV6777  ______________________________________________________________________
 JV6777  GEOID HEIGHT    -        -32.417 (meters)                     GEOID18
 JV6777  NAD 83(2011) X  -  1,141,549.391 (meters)                     COMP
 JV6777  NAD 83(2011) Y  - -4,780,540.600 (meters)                     COMP
 JV6777  NAD 83(2011) Z  -  4,051,584.328 (meters)                     COMP
 JV6777  LAPLACE CORR    -         -2.50  (seconds)                    DEFLEC18
 JV6777
 JV6777  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6777  Standards:
 JV6777         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6777            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6777  -------------------------------------------------------------------
 JV6777  NETWORK    1.29   3.49           0.53   0.49   1.78      0.44984153
 JV6777  -------------------------------------------------------------------
 JV6777  Click here for local accuracies and other accuracy information.
 JV6777
 JV6777.The horizontal coordinates were established by GPS observations
 JV6777.and adjusted by the National Geodetic Survey in June 2012.
 JV6777
 JV6777.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6777.been affixed to the stable North American tectonic plate. See 
 JV6777.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6777
 JV6777.The horizontal coordinates are valid at the epoch date displayed above
 JV6777.which is a decimal equivalence of Year/Month/Day.
 JV6777
 JV6777.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6777.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6777
 JV6777.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6777.GEOID18 height accuracy estimate available here.
 JV6777
 JV6777.Click photographs - Photos may exist for this station.
 JV6777
 JV6777.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6777
 JV6777.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6777
 JV6777.The ellipsoidal height was determined by GPS observations
 JV6777.and is referenced to NAD 83.
 JV6777
 JV6777. The following values were computed from the NAD 83(2011) position.
 JV6777
 JV6777;                    North         East     Units Scale Factor Converg.
 JV6777;SPC MD       -   224,598.392   436,905.061   MT  1.00005058   +0 16 12.1
 JV6777;SPC MD       -   736,869.89  1,433,412.69   sFT  1.00005058   +0 16 12.1
 JV6777;SPC PA S     -    40,180.054   701,239.989   MT  1.00004716   +0 45 56.6
 JV6777;SPC PA S     -   131,824.06  2,300,651.53   sFT  1.00004716   +0 45 56.6
 JV6777;UTM  18      - 4,394,429.780   365,394.324   MT  0.99982307   -1 00 09.5
 JV6777
 JV6777!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6777!SPC MD       -   0.99997496  x   1.00005058  =   1.00002554
 JV6777!SPC PA S     -   0.99997496  x   1.00004716  =   1.00002212
 JV6777!UTM  18      -   0.99997496  x   0.99982307  =   0.99979804
 JV6777
 JV6777_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6539494429(NAD 83)
 JV6777
 JV6777|---------------------------------------------------------------------|
 JV6777| PID    Reference Object                     Distance      Geod. Az  |
 JV6777|                                                           dddmmss.s |
 JV6777| JV6776 HOLLIDAY                            393.604 METERS 24813     |
 JV6777|---------------------------------------------------------------------|
 JV6777
 JV6777                          SUPERSEDED SURVEY CONTROL
 JV6777
 JV6777  NAD 83(2007)-  39 41 20.78409(N)    076 34 11.24575(W) AD(2002.00) 0
 JV6777  ELLIP H (02/10/07)  159.606  (m)                       GP(2002.00)    
 JV6777  ELLIP H (09/18/02)  159.608  (m)                       GP(       ) 4 2
 JV6777  NAD 83(1991)-  39 41 20.78432(N)    076 34 11.24439(W) AD(       ) 1
 JV6777  ELLIP H (01/27/92)  159.597  (m)                       GP(       ) 4 1
 JV6777  NAD 83(1986)-  39 41 20.77694(N)    076 34 11.24905(W) AD(       ) 1
 JV6777  NGVD 29 (06/18/91)  192.2    (m)  UNKNOWN  model used  GPS OBS        
 JV6777
 JV6777.Superseded values are not recommended for survey control.
 JV6777
 JV6777.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6777.See file dsdata.pdf to determine how the superseded data were derived.
 JV6777
 JV6777_MARKER: DZ = AZIMUTH MARK DISK
 JV6777_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6777_STAMPING: 115 HOLLIDAY 1989
 JV6777_MARK LOGO: MD-025
 JV6777_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6777_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6777+STABILITY: SURFACE MOTION
 JV6777_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6777+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6777
 JV6777  HISTORY     - Date     Condition        Report By
 JV6777  HISTORY     - 1989     MONUMENTED       RDA
 JV6777
 JV6777                          STATION DESCRIPTION
 JV6777
 JV6777'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6777'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED NORTHEAST ALONG
 JV6777'GREEN ROAD 0.24 MILES TO THE MARK ON THE RIGHT.
 JV6777'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6777'ABOUT 1 INCH BELOW GROUND STAMPED 115 HOLLIDAY 1989.  THE MARK IS 15.2
 JV6777'FEET WEST OF C AND P OF MARYLAND POLE NUMBER 39, 38.0 FEET SOUTHEAST
 JV6777'OF G AND E POLE NUMBER 179434, AND 14.5 FEET SOUTH OF THE CENTERLINE
 JV6777'OF GREEN ROAD AND 1291.38 FEET FROM THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4728 ***********************************************************************
 AB4728  DESIGNATION -  HOLLLAND
 AB4728  PID         -  AB4728
 AB4728  STATE/COUNTY-  MD/CARROLL
 AB4728  COUNTRY     -  US
 AB4728  USGS QUAD   -  MANCHESTER (2016)
 AB4728
 AB4728                         *CURRENT SURVEY CONTROL
 AB4728  ______________________________________________________________________
 AB4728* NAD 83(2011) POSITION- 39 41 59.37716(N) 076 57 54.26833(W)   ADJUSTED
 AB4728* NAD 83(2011) ELLIP HT-   267.359 (meters)        (06/27/12)   ADJUSTED
 AB4728* NAD 83(2011) EPOCH   -  2010.00
 AB4728* NAVD 88 ORTHO HEIGHT -   299.9   (meters)      984.    (feet) GPS OBS
 AB4728  ______________________________________________________________________
 AB4728  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4728  GEOID HEIGHT    -        -32.604 (meters)                     GEOID99
 AB4728  GEOID HEIGHT    -        -32.598 (meters)                     GEOID18
 AB4728  NAD 83(2011) X  -  1,108,388.716 (meters)                     COMP
 AB4728  NAD 83(2011) Y  - -4,787,642.471 (meters)                     COMP
 AB4728  NAD 83(2011) Z  -  4,052,569.059 (meters)                     COMP
 AB4728  LAPLACE CORR    -          4.86  (seconds)                    DEFLEC18
 AB4728
 AB4728  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4728  Standards:
 AB4728         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4728            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4728  -------------------------------------------------------------------
 AB4728  NETWORK    1.15   3.86           0.49   0.44   1.97      0.19508970
 AB4728  -------------------------------------------------------------------
 AB4728  Click here for local accuracies and other accuracy information.
 AB4728
 AB4728.The horizontal coordinates were established by GPS observations
 AB4728.and adjusted by the National Geodetic Survey in June 2012.
 AB4728
 AB4728.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4728.been affixed to the stable North American tectonic plate. See 
 AB4728.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4728
 AB4728.The horizontal coordinates are valid at the epoch date displayed above
 AB4728.which is a decimal equivalence of Year/Month/Day.
 AB4728
 AB4728.The orthometric height was determined by GPS observations and a
 AB4728.high-resolution geoid model.
 AB4728
 AB4728.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4728.GEOID18 height accuracy estimate available here.
 AB4728
 AB4728.Click photographs - Photos may exist for this station.
 AB4728
 AB4728.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4728
 AB4728.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4728
 AB4728.The ellipsoidal height was determined by GPS observations
 AB4728.and is referenced to NAD 83.
 AB4728
 AB4728. The following values were computed from the NAD 83(2011) position.
 AB4728
 AB4728;                    North         East     Units Scale Factor Converg.
 AB4728;SPC MD       -   225,702.335   402,995.598   MT  1.00005326   +0 01 18.9
 AB4728;SPC MD       -   740,491.74  1,322,161.39   sFT  1.00005326   +0 01 18.9
 AB4728;UTM  18      - 4,396,287.684   331,523.514   MT  0.99994946   -1 15 19.9
 AB4728
 AB4728!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4728!SPC MD       -   0.99995806  x   1.00005326  =   1.00001132
 AB4728!UTM  18      -   0.99995806  x   0.99994946  =   0.99990752
 AB4728
 AB4728_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3152396287(NAD 83)
 AB4728
 AB4728                          SUPERSEDED SURVEY CONTROL
 AB4728
 AB4728  NAD 83(2007)-  39 41 59.37743(N)    076 57 54.26899(W) AD(2002.00) 0
 AB4728  ELLIP H (02/10/07)  267.377  (m)                       GP(2002.00)    
 AB4728  ELLIP H (08/30/02)  267.354  (m)                       GP(       ) 4 2
 AB4728  NAD 83(1991)-  39 41 59.37683(N)    076 57 54.26957(W) AD(       ) 1
 AB4728  ELLIP H (07/03/96)  267.294  (m)                       GP(       ) 1 1
 AB4728  NAVD 88 (07/03/96)  299.9    (m)  GEOID93  model used  GPS OBS        
 AB4728
 AB4728.Superseded values are not recommended for survey control.
 AB4728
 AB4728.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4728.See file dsdata.pdf to determine how the superseded data were derived.
 AB4728
 AB4728_MARKER: DD = SURVEY DISK
 AB4728_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4728_STAMPING: HOLLAND 1995
 AB4728_MARK LOGO: MD-013
 AB4728_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4728_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4728+STABILITY: SURFACE MOTION
 AB4728_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4728+SATELLITE: SATELLITE OBSERVATIONS - June 11, 2007
 AB4728
 AB4728  HISTORY     - Date     Condition        Report By
 AB4728  HISTORY     - 1995     MONUMENTED       MD-013
 AB4728  HISTORY     - 20070611 GOOD             GPSSS
 AB4728
 AB4728                          STATION DESCRIPTION
 AB4728
 AB4728'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4728'STATION IS LOCATED ABOUT 8.5 MI (13.7 KM) NORTH OF WESTMINSTER AND
 AB4728'ABOUT 1.5 MI (2.4 KM) SOUTH OF THE MARYLAND/PENNSYLVANIA STATE LINE.
 AB4728'TO REACH STATION FROM THE INTERSECTION OF MD ROUTE 30 (HANOVER PIKE)
 AB4728'AND MD ROUTE 496 (BACHMAN VALLEY ROAD) NORTHWEST OF MANCHESTER, GO
 AB4728'NORTH ON MD ROUTE 30 FOR 0.6 MI (1.0 KM) TO THE INTERSECTION WITH DEEP
 AB4728'RUN ROAD. TURN LEFT ON DEEP RUN ROAD AND GO SOUTHWEST FOR 2.9 MI (4.7
 AB4728'KM) TO THE INTERSECTION WITH BAND HALL HILL ROAD ON THE RIGHT. TURN
 AB4728'RIGHT ON BAND HALL HILL ROAD AND GO NORTH FOR 0.35 MI (0.56 KM) TO THE
 AB4728'INTERSECTON WITH GRAND VALLEY ROAD. TURN LEFT ON GRAND VALLEY ROAD AND
 AB4728'GO NORTHWEST FOR 0.1 MI (0.2 KM) TO THE STATION ON THE LEFT. STATION
 AB4728'MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH
 AB4728'WITH THE GROUND. IT IS 37.0 FT (11.3 M) SOUTH OF THE CENTERLINE OF THE
 AB4728'ROAD, 30.3 FT (9.2 M) SOUTHEAST OF A CABLE T.V. PEDESTAL AND 64.0 FT
 AB4728'(19.5 M) SOUTHEAST OF AND PERPENDICULAR TO THE CENTERLINE EXTENDED OF
 AB4728'A GRAVEL DRIVEWAY LEADING NORTHEAST TO HOUSE NO.4639.
 AB4728
 AB4728                          STATION RECOVERY (2007)
 AB4728
 AB4728'RECOVERY NOTE BY GPS SALES AND SERVICES 2007 (SS)
 AB4728'RECOVERED BY STEVE SNYDER OF A.L.SNYDER SURVEYING
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6055 ***********************************************************************
 JV6055  DESIGNATION -  HOLLO
 JV6055  PID         -  JV6055
 JV6055  STATE/COUNTY-  MD/HOWARD
 JV6055  COUNTRY     -  US
 JV6055  USGS QUAD   -  ELLICOTT CITY (2016)
 JV6055
 JV6055                         *CURRENT SURVEY CONTROL
 JV6055  ______________________________________________________________________
 JV6055* NAD 83(1991) POSITION- 39 17 43.36735(N) 076 47 47.19101(W)   ADJUSTED
 JV6055* NAVD 88 ORTHO HEIGHT -   168.    (meters)      551.    (feet) SCALED
 JV6055  ______________________________________________________________________
 JV6055  GEOID HEIGHT    -        -32.208 (meters)                     GEOID18
 JV6055  LAPLACE CORR    -         -3.00  (seconds)                    DEFLEC18
 JV6055  HORZ ORDER      -  SECOND
 JV6055
 JV6055.The horizontal coordinates were established by classical geodetic methods
 JV6055.and adjusted by the National Geodetic Survey in January 1992.
 JV6055
 JV6055.The orthometric height was scaled from a topographic map.
 JV6055
 JV6055.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6055.GEOID18 height accuracy estimate available here.
 JV6055
 JV6055.Click photographs - Photos may exist for this station.
 JV6055
 JV6055.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6055
 JV6055. The following values were computed from the NAD 83(1991) position.
 JV6055
 JV6055;                    North         East     Units Scale Factor Converg.
 JV6055;SPC MD       -   180,817.111   417,559.525   MT  0.99997661   +0 07 39.9
 JV6055;SPC MD       -   593,230.81  1,369,943.21   sFT  0.99997661   +0 07 39.9
 JV6055;UTM  18      - 4,351,094.364   345,086.710   MT  0.99989549   -1 08 16.6
 JV6055
 JV6055!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6055!SPC MD       -   0.99997873  x   0.99997661  =   0.99995534
 JV6055!UTM  18      -   0.99997873  x   0.99989549  =   0.99987422
 JV6055
 JV6055_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4508651094(NAD 83)
 JV6055
 JV6055                          SUPERSEDED SURVEY CONTROL
 JV6055
 JV6055  NAD 83(1986)-  39 17 43.36491(N)    076 47 47.19930(W) AD(       ) 2
 JV6055  NAD 27      -  39 17 42.98500(N)    076 47 48.29000(W) AD(       ) 2
 JV6055
 JV6055.Superseded values are not recommended for survey control.
 JV6055
 JV6055.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6055.See file dsdata.pdf to determine how the superseded data were derived.
 JV6055
 JV6055_MARKER: Z = SEE DESCRIPTION
 JV6055_SETTING: 0 = UNSPECIFIED SETTING
 JV6055_SP_SET: LOOKOUT TOWER CEILING
 JV6055
 JV6055  HISTORY     - Date     Condition        Report By
 JV6055  HISTORY     - 1957     MONUMENTED       CGS
 JV6055  HISTORY     - 20030922 MARK NOT FOUND   USPSQD
 JV6055  HISTORY     - 20041003 MARK NOT FOUND   USPSQD
 JV6055
 JV6055                          STATION DESCRIPTION
 JV6055
 JV6055'DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (JCE)
 JV6055'STATION IS LOCATED ABOUT 2 MILES NORTH OF ELLICOTT CITY, 4-1/4
 JV6055'MILES WEST OF THE WEST EDGE OF BALTIMORE AND 1/2 MILE SOUTHWEST
 JV6055'OF THE PATAPSCO RIVER ON A HIGH HILL KNOWN AS CHESTNUT HILL.  THE
 JV6055'MARK IS LOCATED IN THE CEILING OF THE HOLLOFIELD LOOKOUT
 JV6055'TOWER, IN THE CENTER MOLDING STRIP, ABOUT 18 INCHES FROM THE
 JV6055'SOUTHEAST SIDE.  THE POINT IS MARKED BY A BRASS SCREW WITH A
 JV6055'CROSS CUT IN THE SCREW HEAD.
 JV6055'
 JV6055'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY 40 AND 29, ABOUT 1
 JV6055'MILE NORTHWEST OF ELLICOTT CITY, GO EAST ON U.S. HIGHWAY 40
 JV6055'0.3 MILE TO ROUTE 99, TURN LEFT ON ROUTE 99 (ROGER AVE) AND GO
 JV6055'NORTH 1.05 MILES TO A SIDE ROAD RIGHT JUST BEFORE REACHING A
 JV6055'CHURCH ON THE RIGHT.  HERE TURN SHARP RIGHT (EASTERLY) 0.75 MILE
 JV6055'TO END OF SURFACED ROAD AND A GATE ON THE LEFT, TURN LEFT
 JV6055'THROUGH GATE 0.05 MILE TO FORK, TAKE RIGHT FORK 0.05 MILE TO
 JV6055'THE HOLLOFIELD LOOKOUT TOWER AND THE STATION AS DESCRIBED.
 JV6055
 JV6055                          STATION RECOVERY (2003)
 JV6055
 JV6055'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV6055'NOT FOUND.  THE HOLOFIELD LOOKOUT TOWER WAS TAKEN DOWN IN ABOUT 1985
 JV6055'AND REPLACED WITH A DNR SAFETY DEPARTMENT COMMUNICATIONS TOWER BUILD
 JV6055'IN 1987.  THE DNR COMMUNICATIONS TOWER IS A THREE-LEGGED
 JV6055'SELF-SUPPORTING TOWER 250 FEET HIGH PAINTED IN ALTERNATE SECTIONS OF
 JV6055'RED AND WHITE WITH A RED LIGHT ATOP.
 JV6055'TO REACH THE STATION FROM THE JUNCTION OF ROGERS AVENUE (HIGHWAY 99)
 JV6055'AND CHURCH LANE ROAD JUST SOUTH OF THE ROGERS AVENUE BRIDGE OVER
 JV6055'INTERSTATE 70, GO EAST ON CHURCH LANE ROAD BEYOND THE EASTERN DRIVEWAY
 JV6055'TO -8237 CHURCH LANE ROAD- TO THE LOCKED GATE OVER THE FIELD ROAD TO
 JV6055'THE LEFT.  NOTE-- THERE IS NO CHURCH PRESENT AT THE JUNCTION OF ROGERS
 JV6055'AVENUE AND CHURCH LANE ROAD AS DESCRIBED IN 1957.
 JV6055'
 JV6055
 JV6055                          STATION RECOVERY (2004)
 JV6055
 JV6055'RECOVERY NOTE BY US POWER SQUADRON 2004 (CLB)
 JV6055'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2981 ***********************************************************************
 JV2981  DESIGNATION -  HOLLOW
 JV2981  PID         -  JV2981
 JV2981  STATE/COUNTY-  MD/FREDERICK
 JV2981  COUNTRY     -  US
 JV2981  USGS QUAD   -  MIDDLETOWN (2016)
 JV2981
 JV2981                         *CURRENT SURVEY CONTROL
 JV2981  ______________________________________________________________________
 JV2981* NAD 83(1991) POSITION- 39 28 45.62700(N) 077 31 22.16291(W)   ADJUSTED
 JV2981* NAVD 88 ORTHO HEIGHT -   216.840 (meters)      711.42  (feet) ADJUSTED
 JV2981  ______________________________________________________________________
 JV2981  GEOID HEIGHT    -        -33.035 (meters)                     GEOID18
 JV2981  LAPLACE CORR    -          8.66  (seconds)                    DEFLEC18
 JV2981  DYNAMIC HEIGHT  -        216.719 (meters)      711.02  (feet) COMP
 JV2981  MODELED GRAVITY -    980,063.4   (mgal)                       NAVD 88
 JV2981
 JV2981  HORZ ORDER      -  SECOND
 JV2981  VERT ORDER      -  SECOND    CLASS 0
 JV2981
 JV2981.The horizontal coordinates were established by classical geodetic methods
 JV2981.and adjusted by the National Geodetic Survey in January 1992.
 JV2981
 JV2981.The orthometric height was determined by differential leveling and
 JV2981.adjusted by the NATIONAL GEODETIC SURVEY
 JV2981.in June 1991.
 JV2981
 JV2981.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2981.GEOID18 height accuracy estimate available here.
 JV2981
 JV2981.Click photographs - Photos may exist for this station.
 JV2981
 JV2981.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2981
 JV2981.The dynamic height is computed by dividing the NAVD 88
 JV2981.geopotential number by the normal gravity value computed on the
 JV2981.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2981.degrees latitude (g = 980.6199 gals.).
 JV2981
 JV2981.The modeled gravity was interpolated from observed gravity values.
 JV2981
 JV2981. The following values were computed from the NAD 83(1991) position.
 JV2981
 JV2981;                    North         East     Units Scale Factor Converg.
 JV2981;SPC MD       -   201,350.026   355,016.903   MT  1.00000526   -0 19 41.3
 JV2981;SPC MD       -   660,595.88  1,164,751.29   sFT  1.00000526   -0 19 41.3
 JV2981;UTM  18      - 4,373,010.142   283,012.385   MT  1.00017973   -1 36 16.7
 JV2981
 JV2981!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2981!SPC MD       -   0.99997116  x   1.00000526  =   0.99997642
 JV2981!UTM  18      -   0.99997116  x   1.00017973  =   1.00015089
 JV2981
 JV2981:                Primary Azimuth Mark                     Grid Az
 JV2981:SPC MD       -  CATOCTIN MTN RADIO WFMD FM MST           041 57 41.3
 JV2981:UTM  18      -  CATOCTIN MTN RADIO WFMD FM MST           043 14 16.7
 JV2981
 JV2981_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8301273010(NAD 83)
 JV2981
 JV2981|---------------------------------------------------------------------|
 JV2981| PID    Reference Object                     Distance      Geod. Az  |
 JV2981|                                                           dddmmss.s |
 JV2981| JV4613 CATOCTIN MTN RADIO WFMD FM MST      APPROX. 3.1 KM 0413800.0 |
 JV2981| JV2982 HOLLOW RM 1                          15.399 METERS 13401     |
 JV2981| JV2983 HOLLOW RM 2                          15.228 METERS 33128     |
 JV2981|---------------------------------------------------------------------|
 JV2981
 JV2981                          SUPERSEDED SURVEY CONTROL
 JV2981
 JV2981  NAD 83(1986)-  39 28 45.62710(N)    077 31 22.17288(W) AD(       ) 2
 JV2981  NAD 27      -  39 28 45.25950(N)    077 31 23.22020(W) AD(       ) 2
 JV2981  NGVD 29             217.05   (m)          712.1    (f) LEVELING    3  
 JV2981  NGVD 29 (11/26/84)  217.053  (m)          712.11   (f) ADJUSTED    2 0
 JV2981
 JV2981.Superseded values are not recommended for survey control.
 JV2981
 JV2981.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2981.See file dsdata.pdf to determine how the superseded data were derived.
 JV2981
 JV2981_MARKER: DS = TRIANGULATION STATION DISK
 JV2981_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2981_STAMPING: HOLLOW 1958
 JV2981_MARK LOGO: CGS
 JV2981_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2981+STABILITY: SURFACE MOTION
 JV2981
 JV2981  HISTORY     - Date     Condition        Report By
 JV2981  HISTORY     - 1958     MONUMENTED       CGS
 JV2981  HISTORY     - 1958     GOOD             CGS
 JV2981  HISTORY     - 1963     GOOD             CGS
 JV2981
 JV2981                          STATION DESCRIPTION
 JV2981
 JV2981'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2981'STATION IS LOCATED IN THE FOOTHILLS ON THE WEST SIDE OF CATOCTIAN
 JV2981'MOUNTAIN, ALONG THE NORTHEAST SIDE OF U.S. HIGHWAY NO. 40, ABOUT
 JV2981'7-1/2 MILES NORTHWEST OF FREDERICK, ABOUT 3.0 MILES EAST-SOUTHEAST
 JV2981'OF MYERSVILLE AND NEAR THE INTERSECTION OF U.S. HIGHWAY NO. 40
 JV2981'AND HOLLOW ROAD.  STATION IS ON A STRIP OF LAND BETWEEN U.S.
 JV2981'HIGHWAY NO. 40 AND HOLLOW ROAD, 27 FEET SOUTHWEST OF THE
 JV2981'APPROXIMATE CENTERLINE OF HOLLOW ROAD, ABOUT 75 YARDS
 JV2981'WEST-NORTHWEST OF SHELL GAS STATION AND TRUCK STOP AND 32
 JV2981'FEET NORTH OF TREE.  THE MARK IS SET FLUSH AND THE DISK IS
 JV2981'STAMPED HOLLOW 1958.
 JV2981'
 JV2981'REFERENCE MARK NO. 1 IS 21 FEET SOUTHWEST OF HOLLOW ROAD AND 24
 JV2981'FEET EAST OF TREE.  THE MARK IS SET FLUSH AND THE DISK IS
 JV2981'STAMPED HOLLOW NO 1 1958.
 JV2981'
 JV2981'REFERENCE MARK NO. 2 IS 16 FEET SOUTHWEST OF APPROXIMATE
 JV2981'CENTERLINE OF HOLLOW ROAD, AND 35 FEET WEST-NORTHWEST OF TREE.  THE
 JV2981'MARK PROJECTS 2 INCHES AND THE DISK IS STAMPED HOLLOW NO 2 1957.
 JV2981'
 JV2981'TO REACH FROM THE POST OFFICE IN FREDERICK, GO WESTERLY ON
 JV2981'U.S. HIGHWAY 40 FOR 6.45 MILES TO TOP OF MOUNTAIN.  CONTINUE
 JV2981'WESTERLY ON U.S. HIGHWAY NO. 40 FOR 2.0 MILES TO CROSSROADS
 JV2981'(HOLLOW ROAD) AND SHELL GAS STATION AND TRUCK STOP ON RIGHT.  TURN
 JV2981'RIGHT AND GO NORTHWESTERLY ON HOLLOW ROAD FOR 0.05 MILE TO
 JV2981'STATION ON LEFT (WEST) SIDE OF ROAD AS DESCRIBED.
 JV2981'
 JV2981'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV2981
 JV2981                          STATION RECOVERY (1958)
 JV2981
 JV2981'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2981'3.3 MI SE FROM MYERSVILLE.
 JV2981'0.5 MILE NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV2981'AT MYERSVILLE, THENCE 2.8 MILES SOUTHEAST ALONG U.S. HIGHWAY
 JV2981'40, 300 FEET NORTHWEST OF A SHELL SERVICE STATION (DICKS TRUCK
 JV2981'STOP), ON THE TOP OF A CUT BANK NORTHEAST OF THE HIGHWAY, 14
 JV2981'FEET NORTHEAST OF THE EDGE OF THE CUT, AND SET IN THE TOP OF
 JV2981'A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND.
 JV2981
 JV2981                          STATION RECOVERY (1963)
 JV2981
 JV2981'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (RFG)
 JV2981'STATION AND BOTH REFERENCE MARKS WERE RECOVERED AS PREVIOUSLY
 JV2981'DESCRIBED AND FOUND IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6475 ***********************************************************************
 JV6475  DESIGNATION -  HOLLOW 2
 JV6475  PID         -  JV6475
 JV6475  STATE/COUNTY-  MD/FREDERICK
 JV6475  COUNTRY     -  US
 JV6475  USGS QUAD   -  MIDDLETOWN (2016)
 JV6475
 JV6475                         *CURRENT SURVEY CONTROL
 JV6475  ______________________________________________________________________
 JV6475* NAD 83(2011) POSITION- 39 28 46.47869(N) 077 31 23.26249(W)   ADJUSTED
 JV6475* NAD 83(2011) ELLIP HT-   180.401 (meters)        (06/27/12)   ADJUSTED
 JV6475* NAD 83(2011) EPOCH   -  2010.00
 JV6475* NAVD 88 ORTHO HEIGHT -   213.4   (meters)      700.    (feet) VERTCON3
 JV6475  ______________________________________________________________________
 JV6475  GEOID HEIGHT    -        -33.036 (meters)                     GEOID18
 JV6475  NAD 83(2011) X  -  1,065,058.299 (meters)                     COMP
 JV6475  NAD 83(2011) Y  - -4,813,361.761 (meters)                     COMP
 JV6475  NAD 83(2011) Z  -  4,033,668.369 (meters)                     COMP
 JV6475  LAPLACE CORR    -          8.64  (seconds)                    DEFLEC18
 JV6475
 JV6475  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6475  Standards:
 JV6475         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6475            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6475  -------------------------------------------------------------------
 JV6475  NETWORK    2.10   2.69           0.93   0.77   1.37     -0.09251967
 JV6475  -------------------------------------------------------------------
 JV6475  Click here for local accuracies and other accuracy information.
 JV6475
 JV6475.The horizontal coordinates were established by GPS observations
 JV6475.and adjusted by the National Geodetic Survey in June 2012.
 JV6475
 JV6475.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6475.been affixed to the stable North American tectonic plate. See 
 JV6475.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6475
 JV6475.The horizontal coordinates are valid at the epoch date displayed above
 JV6475.which is a decimal equivalence of Year/Month/Day.
 JV6475
 JV6475.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6475.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6475
 JV6475.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6475.GEOID18 height accuracy estimate available here.
 JV6475
 JV6475.Click photographs - Photos may exist for this station.
 JV6475
 JV6475.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6475
 JV6475.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6475
 JV6475.The ellipsoidal height was determined by GPS observations
 JV6475.and is referenced to NAD 83.
 JV6475
 JV6475. The following values were computed from the NAD 83(2011) position.
 JV6475
 JV6475;                    North         East     Units Scale Factor Converg.
 JV6475;SPC MD       -   201,376.443   354,990.774   MT  1.00000531   -0 19 42.0
 JV6475;SPC MD       -   660,682.55  1,164,665.56   sFT  1.00000531   -0 19 42.0
 JV6475;UTM  18      - 4,373,037.139   282,986.847   MT  1.00017987   -1 36 17.4
 JV6475
 JV6475!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6475!SPC MD       -   0.99997170  x   1.00000531  =   0.99997701
 JV6475!UTM  18      -   0.99997170  x   1.00017987  =   1.00015156
 JV6475
 JV6475:                Primary Azimuth Mark                     Grid Az
 JV6475:SPC MD       -  CATOCTIN MTN RADIO WFMD FM MST           042 39 27.3
 JV6475:UTM  18      -  CATOCTIN MTN RADIO WFMD FM MST           043 56 02.7
 JV6475
 JV6475_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8298673037(NAD 83)
 JV6475
 JV6475|---------------------------------------------------------------------|
 JV6475| PID    Reference Object                     Distance      Geod. Az  |
 JV6475|                                                           dddmmss.s |
 JV6475| JV4613 CATOCTIN MTN RADIO WFMD FM MST      APPROX. 3.1 KM 0421945.3 |
 JV6475| JV4607 MYERSVILLE AM TEL TWR KGB 25        APPROX. 2.6 KM 0522838.5 |
 JV6475| CS6545 HOLLOW 2 RM 3                         3.645 METERS 25646     |
 JV6475| CS6546 HOLLOW 2 RM 4                         6.291 METERS 34420     |
 JV6475|---------------------------------------------------------------------|
 JV6475
 JV6475                          SUPERSEDED SURVEY CONTROL
 JV6475
 JV6475  NAD 83(2007)-  39 28 46.47880(N)    077 31 23.26314(W) AD(2002.00) 0
 JV6475  ELLIP H (02/10/07)  180.426  (m)                       GP(2002.00)    
 JV6475  ELLIP H (06/09/03)  180.427  (m)                       GP(       ) 4 1
 JV6475  NAD 83(1991)-  39 28 46.47819(N)    077 31 23.26300(W) AD(       ) 1
 JV6475  ELLIP H (01/27/92)  180.327  (m)                       GP(       ) 4 1
 JV6475  NAD 83(1986)-  39 28 46.47750(N)    077 31 23.27401(W) AD(       ) 1
 JV6475  NAD 27      -  39 28 46.11075(N)    077 31 24.31210(W) AD(       ) 1
 JV6475  NGVD 29 (02/09/93)  213.7    (m)  UNKNOWN  model used  GPS OBS        
 JV6475  NGVD 29 (11/20/87)  213.1    (m)  RAPOU78  model used  GPS OBS        
 JV6475
 JV6475.Superseded values are not recommended for survey control.
 JV6475
 JV6475.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6475.See file dsdata.pdf to determine how the superseded data were derived.
 JV6475
 JV6475_MARKER: DS = TRIANGULATION STATION DISK
 JV6475_SETTING: 66 = SET IN ROCK OUTCROP
 JV6475_STAMPING: HOLLOW 2 1982
 JV6475_MARK LOGO: NGS
 JV6475_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6475_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6475+STABILITY: POSITION/ELEVATION WELL
 JV6475_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6475+SATELLITE: SATELLITE OBSERVATIONS - July 16, 1992
 JV6475
 JV6475  HISTORY     - Date     Condition        Report By
 JV6475  HISTORY     - 1982     MONUMENTED       NGS
 JV6475  HISTORY     - 1982     GOOD             NGS
 JV6475  HISTORY     - 19860117 GOOD
 JV6475  HISTORY     - 1987     GOOD             NGS
 JV6475  HISTORY     - 19920716 GOOD             NOS
 JV6475  HISTORY     - 19970903 GOOD             DMW
 JV6475
 JV6475                          STATION DESCRIPTION
 JV6475
 JV6475'DESCRIBED BY NATIONAL GEODETIC SURVEY 1982 (CLN)
 JV6475'THE STATION IS LOCATED ABOUT 24-1/4 KM (15 MI) SOUTHEAST FROM
 JV6475'HAGERSTOWN, 13-3/4 KM (8 MI) WEST FROM FREDERICK AND ON A SMALL KNOLL
 JV6475'BETWEEN HOLLOW ROAD AND U.S. HIGHWAY 40.
 JV6475'
 JV6475'OWNERSHIP--ROAD RIGHT-OF-WAY.
 JV6475'
 JV6475'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAYS 15 AND 40 IN THE WEST
 JV6475'EDGE OF FREDERICK, GO WEST ON U.S. HIGHWAY 40 FOR 11.85 KM (7.35 MI)
 JV6475'TO A ROAD RIGHT.  BEAR RIGHT AND GO WESTERLY ON HOLLOW ROAD FOR 0.13
 JV6475'KM (0.08 MI) TO THE STATION ON THE LEFT.
 JV6475'
 JV6475'THE STATION MARK IS A STANDARD NGS DISK STAMPED--HOLLOW 2 1982-- SET
 JV6475'IN THE DRILL HOLE IN OUTCROPPING BEDROCK WHICH IS FLUSH WITH THE
 JV6475'SURFACE.
 JV6475'
 JV6475'THE STATION MARK IS 17.1 METERS (56 FT) NORTH FROM THE CENTER OF U.S.
 JV6475'HIGHWAY 40, 13.9 METERS (45.5 FT) SOUTH FROM THE CENTER OF HOLLOW ROAD
 JV6475'AND 6.4 METERS (21.1 FT) SOUTH FROM A CARSONITE WITNESS POST.
 JV6475
 JV6475                          STATION RECOVERY (1982)
 JV6475
 JV6475'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1982
 JV6475'RECOVERED IN GOOD CONDITION.
 JV6475
 JV6475                          STATION RECOVERY (1986)
 JV6475
 JV6475'RECOVERED 1986
 JV6475'RECOVERED IN GOOD CONDITION.
 JV6475
 JV6475                          STATION RECOVERY (1987)
 JV6475
 JV6475'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 JV6475'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES NOTED BELOW -- THE
 JV6475'STATION MARK WAS RECOVERED AND FOUND IN GOOD CONDITION.  TWO REFERENCE
 JV6475'MARKS WERE PREVIOUSLY SET AND THEY WERE INTERSECTION AT THIS DATE.
 JV6475'THERE IS NO SUITABLE LOCATION AVAILABLE TO SET A AZIMUTH MARK AT THIS
 JV6475'DATE.  A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV6475'
 JV6475'THE STATION IS LOCATED ABOUT 12.9 KM (8 MI) NORTHWEST OF FREDERICK,
 JV6475'4.8 KM (3 MI) SOUTHEAST OF MYERSVILLE AND ON THE SOUTHWEST SLOPE OF A
 JV6475'CUTBANK BETWEEN U.S. HIGHWAY 40 AND HOLLOW ROAD.  OWNERSHIP--ROAD
 JV6475'RIGHT-OF-WAY.
 JV6475'
 JV6475'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAYS 15 AND 40
 JV6475'(WEST PATRICK STREET) IN THE WEST PART OF FREDERICK, GO NORTHWEST FOR
 JV6475'11.75 KM (7.3 MI) ON U.S. HIGHWAY 40 (WEST PATRICK STREET) TO HOLLOW
 JV6475'ROAD ON THE RIGHT AND THE STATION JUST NORTHWEST OF THE INTERSECTION.
 JV6475'
 JV6475'THE STATION IS A STANDARD NGS DISK STAMPED ---HOLLOW 2 1982---, SET
 JV6475'INTO A DRILL HOLE IN A ROCK OUTCROP WHICH IS FLUSH WITH THE SURFACE OF
 JV6475'THE GROUND. LOCATED 13.9 METERS (45.5 FT) SOUTHWEST FROM THE CENTER OF
 JV6475'HOLLOW ROAD, 10.8 METERS (35.5 FT) NORTHEAST FROM THE CENTER OF U.S
 JV6475'HIGHWAY 40, 121.6 METERS (399 FT) NORTHWEST FROM THE CENTER OF HOLLOW
 JV6475'ROAD WHERE IT JUNCTIONS WITH U.S. HIGHWAY 40, 26.8 METERS (88.0 FT)
 JV6475'SOUTHWEST FROM A POWERLINE POLE NUMBERED 54 AND 6.1 METERS (20.0 FT)
 JV6475'SOUTHWEST FROM A WITNESS POST.
 JV6475'
 JV6475'REFERENCE MARK NO. 3 IS A STANDARD NGS DISK STAMPED
 JV6475'---HOLLOW 2 NO 3 1982---, SET INTO A DRILL HOLE IN A ROCK OUTCROP AND
 JV6475'IT IS FLUSH WITH THE SURFACE OF THE GROUND. LOCATED 17.5 METERS
 JV6475'(57.5 FT) SOUTHWEST FROM THE CENTER OF HOLLOW ROAD, 7.5 METERS
 JV6475'(24.5 FT) NORTHEAST FROM THE CENTER OF U.S. HIGHWAY 40, 123.1 METERS
 JV6475'(404 FT) NORTHWEST FROM THE POINT WHERE HOLLOW ROAD JOINS U.S. HIGHWAY
 JV6475'40 AND 9.8 METERS (32.0 FT) SOUTHWEST FROM THE WITNESS POST.  MARK IS
 JV6475'2.0 METERS BELOW THE STATION.
 JV6475'
 JV6475'REFERENCE MARK NO. 4 IS A STANDARD NGS DISK STAMPED
 JV6475'---HOLLOW 2 NO 4 1982---, SET INTO A DRILL HOLE IN A ROCK OUTCROP AND
 JV6475'IT IS FLUSH WITH THE SURFACE OF THE GROUND. LOCATED 13.0 METERS
 JV6475'(42.5 FT) SOUTHWEST FROM THE CENTER OF HOLLOW ROAD, 13.4 METERS
 JV6475'(44.0 FT) NORTHEAST FROM THE CENTER OF U.S. HIGHWAY 40, 127.1 METERS
 JV6475'(417 FT) NORTHWEST FROM THE POINT WHERE HOLLOW ROAD JOINS U.S. HIGHWAY
 JV6475'40 AND 7.5 METERS (24.5 FT) SOUTHWEST FROM THE WITNESS POST.  MARK IS
 JV6475'LEVEL WITH THE STATION.
 JV6475
 JV6475                          STATION RECOVERY (1992)
 JV6475
 JV6475'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JV6475'LOCATED 12.9 KM (8.02 MI) NORTHWEST OF FREDERICK, 4.8 KM (2.98 MI)
 JV6475'SOUTHEAST OF MYERSVILLE ON THE SOUTHWEST SLOPE OF A CUT BANK BETWEEN
 JV6475'U.S. HWY 40 AND HOLLOW ROAD.
 JV6475'
 JV6475'TO REACH THE STATION FROM THE THE INTERSECTION OF U.S. HWYS 15 AND 40
 JV6475'(WEST PATRICK STREET) IN THE WEST PART OF FREDERICK, GO NORTHWEST ON
 JV6475'U.S.HWY 40 FOR 11.75 KM (7.30 MI) TO HOLLOW ROAD ON THE RIGHT AND THE
 JV6475'STATION JUST NORTHWEST OF THE INTERSECTION.
 JV6475'
 JV6475'THE STATION MARK IS A STANDARD NGS BRONZE DISK SET IN A DRILL HOLE IN
 JV6475'AN OUTCROPPING OF BEDROCK FLUSH WITH GROUND LEVEL.  IT IS, 121.6 M
 JV6475'(398.95 FT) NORTHWEST FROM THE CENTER OF HOLLOW ROAD WHERE IT
 JV6475'JUNCTIONS WITH U.S. HWY 40, 26.8 M (87.93 FT) SOUTHWEST FROM A POWER
 JV6475'LINE POLE NUMBERED 54, 13.9 M (45.60 FT) SOUTHWEST FROM THE CENTER OF
 JV6475'HOLLOW ROAD, 10.8 M (35.43 FT) NORTHEAST FROM THE CENTER OF U.S. HWY
 JV6475'40, 6.1 M (20.01 FT) SOUTHWEST FROM A METAL WITNESS POST, 3.645 M
 JV6475'(11.959 FT) EAST-NORTHEAST OF REFERENCE MARK 3 AND 6.291 M (20.640 FT)
 JV6475'SOUTH-SOUTHEST OF REFERENCE MARK 4. RECOVERY BY R.P.  BUTLER.
 JV6475
 JV6475                          STATION RECOVERY (1997)
 JV6475
 JV6475'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV6475'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6800 ***********************************************************************
 HV6800  DESIGNATION -  HOLLOW MSFC 1908
 HV6800  PID         -  HV6800
 HV6800  STATE/COUNTY-  MD/ST MARYS
 HV6800  COUNTRY     -  US
 HV6800  USGS QUAD   -  LEONARDTOWN (2016)
 HV6800
 HV6800                         *CURRENT SURVEY CONTROL
 HV6800  ______________________________________________________________________
 HV6800* NAD 83(1993) POSITION- 38 16 01.05791(N) 076 39 16.89254(W)   ADJUSTED
 HV6800* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6800  ______________________________________________________________________
 HV6800  GEOID HEIGHT    -        -33.867 (meters)                     GEOID18
 HV6800  LAPLACE CORR    -         -4.60  (seconds)                    DEFLEC18
 HV6800  HORZ ORDER      -  THIRD
 HV6800
 HV6800.The horizontal coordinates were established by classical geodetic methods
 HV6800.and adjusted by the National Geodetic Survey in November 1994.
 HV6800
 HV6800.The orthometric height was scaled from a topographic map.
 HV6800
 HV6800.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6800.GEOID18 height accuracy estimate available here.
 HV6800
 HV6800.Click photographs - Photos may exist for this station.
 HV6800
 HV6800.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6800
 HV6800. The following values were computed from the NAD 83(1993) position.
 HV6800
 HV6800;                    North         East     Units Scale Factor Converg.
 HV6800;SPC MD       -    66,692.555   430,219.049   MT  1.00000591   +0 13 00.2
 HV6800;SPC MD       -   218,807.16  1,411,477.00   sFT  1.00000591   +0 13 00.2
 HV6800;SPC VA N     - 2,068,254.170 3,661,472.393   MT  0.99996699   +1 09 06.1
 HV6800;SPC VA N     - 6,785,597.22 12,012,680.68   sFT  0.99996699   +1 09 06.1
 HV6800;UTM  18      - 4,236,730.261   355,245.923   MT  0.99985806   -1 01 29.9
 HV6800
 HV6800!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6800!SPC MD       -   1.00000504  x   1.00000591  =   1.00001095
 HV6800!SPC VA N     -   1.00000504  x   0.99996699  =   0.99997203
 HV6800!UTM  18      -   1.00000504  x   0.99985806  =   0.99986310
 HV6800
 HV6800:                Primary Azimuth Mark                     Grid Az
 HV6800:SPC MD       -  HEALEY MSFC 1908                         077 39 06.8
 HV6800:SPC VA N     -  HEALEY MSFC 1908                         076 43 00.9
 HV6800:UTM  18      -  HEALEY MSFC 1908                         078 53 36.9
 HV6800
 HV6800_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5524536730(NAD 83)
 HV6800
 HV6800|---------------------------------------------------------------------|
 HV6800| PID    Reference Object                     Distance      Geod. Az  |
 HV6800|                                                           dddmmss.s |
 HV6800| HV6799 HEALEY MSFC 1908                    APPROX. 0.8 KM 0775207.0 |
 HV6800| HV6801 TREES MSFC 1908                     370.560 METERS 17709     |
 HV6800|---------------------------------------------------------------------|
 HV6800
 HV6800                          SUPERSEDED SURVEY CONTROL
 HV6800
 HV6800  NAD 83(1991)-  38 16 01.05694(N)    076 39 16.89736(W) AD(       ) 3
 HV6800  NAD 83(1986)-  38 16 01.05776(N)    076 39 16.90904(W) AD(       ) 3
 HV6800  NAD 27      -  38 16 00.58400(N)    076 39 18.02700(W) AD(       ) 3
 HV6800  USSD        -  38 16 01.19100(N)    076 39 17.91700(W) AD(       ) 3
 HV6800
 HV6800.Superseded values are not recommended for survey control.
 HV6800
 HV6800.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6800.See file dsdata.pdf to determine how the superseded data were derived.
 HV6800
 HV6800_MARKER: H = DRILL HOLE
 HV6800_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6800_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6800+STABILITY: SURFACE MOTION
 HV6800
 HV6800  HISTORY     - Date     Condition        Report By
 HV6800  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6800  HISTORY     - 1958     GOOD             CGS
 HV6800
 HV6800                          STATION DESCRIPTION
 HV6800
 HV6800'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6800'STATION IS ON THE WESTERN SHORE OF BRETONS BAY, ABOUT 1/2 MILE NW
 HV6800'OF LOVERS POINT, AND 7/8 MILE NE OF PAW PAW POINT, AT SIDE OF A
 HV6800'RAVINE, ABOUT 2 FEET ABOVE HIGH WATER, 4 YARDS NW OF SHORE, 5
 HV6800'YARDS SE OF FOOT OF BANK, AND NE OF CEDAR TREES.
 HV6800'
 HV6800'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6800'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6800'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6800'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6800'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL
 HV6800'IN BLAZE IN 7-INCH CEDAR TREE, 15.41 METERS (50.6 FEET), S 51 DEG
 HV6800'5 MIN W.  NAIL IN BLAZE IN 8-INCH CEDAR TREE, 19.94 METERS (65.4
 HV6800'FEET), N 88 DEG 25 MIN W.  NAIL IN BLAZE IN 18-INCH WHITE-OAK
 HV6800'STUMP, 4.87 METERS (15.98 FEET), N 3 DEG 22 MIN E.  RIGHT CHIMNEY
 HV6800'OF ADAMS HOUSE, 1/2 MILE, N 73 DEG 3 MIN E.  CHIMNEY ON MIDDLE OF
 HV6800'DOUBLE HOUSE, 3/4 MILE, S 62 DEG 26 MIN E.  RIGHT CHIMNEY OF
 HV6800'HOUSE, 3/4 MILE, S 46 DEG 29 MIN E.  WATER TANK, 3/4 MILE, S 45
 HV6800'DEG 54 MIN E.  CHIMNEY OF HOUSE, 1-1/4 MILES, S 30 DEG 24 MIN E.
 HV6800
 HV6800                          STATION RECOVERY (1958)
 HV6800
 HV6800'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6800'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL
 HV6800'DESCRIPTION BY C.C.Y. IS ADEQUATE AND COMPLETE WITH THE FOLLOWING
 HV6800'CHANGES.  DELETE 4 YARDS NW OF SHORE AND ADD 5.8 FEET EAST OF MHW
 HV6800'LINE.  THE STATION MARK PROJECTS 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2982 ***********************************************************************
 JV2982  DESIGNATION -  HOLLOW RM 1
 JV2982  PID         -  JV2982
 JV2982  STATE/COUNTY-  MD/FREDERICK
 JV2982  COUNTRY     -  US
 JV2982  USGS QUAD   -  MIDDLETOWN (2016)
 JV2982
 JV2982                         *CURRENT SURVEY CONTROL
 JV2982  ______________________________________________________________________
 JV2982* NAD 83(1986) POSITION- 39 28 45.28   (N) 077 31 21.70   (W)   HD_HELD1
 JV2982* NAVD 88 ORTHO HEIGHT -   216.259 (meters)      709.51  (feet) ADJUSTED
 JV2982  ______________________________________________________________________
 JV2982  GEOID HEIGHT    -        -33.034 (meters)                     GEOID18
 JV2982  DYNAMIC HEIGHT  -        216.138 (meters)      709.11  (feet) COMP
 JV2982  MODELED GRAVITY -    980,063.4   (mgal)                       NAVD 88
 JV2982
 JV2982  VERT ORDER      -  SECOND    CLASS 0
 JV2982
 JV2982.The horizontal coordinates were determined by differentially corrected
 JV2982.hand held GPS observations or other comparable positioning techniques
 JV2982.and have an estimated accuracy of +/- 3 meters.
 JV2982
 JV2982.The orthometric height was determined by differential leveling and
 JV2982.adjusted by the NATIONAL GEODETIC SURVEY
 JV2982.in June 1991.
 JV2982
 JV2982.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2982.GEOID18 height accuracy estimate available here.
 JV2982
 JV2982.Click photographs - Photos may exist for this station.
 JV2982
 JV2982.The dynamic height is computed by dividing the NAVD 88
 JV2982.geopotential number by the normal gravity value computed on the
 JV2982.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2982.degrees latitude (g = 980.6199 gals.).
 JV2982
 JV2982.The modeled gravity was interpolated from observed gravity values.
 JV2982
 JV2982;                    North         East    Units  Estimated Accuracy
 JV2982;SPC MD       -   201,339.3     355,027.9     MT  (+/- 3 meters HH1 GPS) 
 JV2982
 JV2982_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8302372999(NAD 83)
 JV2982
 JV2982                          SUPERSEDED SURVEY CONTROL
 JV2982
 JV2982  NGVD 29 (11/26/84)  216.472  (m)          710.21   (f) ADJUSTED    2 0
 JV2982
 JV2982.Superseded values are not recommended for survey control.
 JV2982
 JV2982.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2982.See file dsdata.pdf to determine how the superseded data were derived.
 JV2982
 JV2982_MARKER: DR = REFERENCE MARK DISK
 JV2982_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2982_STAMPING: HOLLOW NO 1 1958
 JV2982_MARK LOGO: CGS
 JV2982_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2982+STABILITY: SURFACE MOTION
 JV2982
 JV2982  HISTORY     - Date     Condition        Report By
 JV2982  HISTORY     - 1958     MONUMENTED       CGS
 JV2982
 JV2982                          STATION DESCRIPTION
 JV2982
 JV2982'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2982'3.3 MI SE FROM MYERSVILLE.
 JV2982'0.5 MILE NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV2982'AT MYERSVILLE, THENCE 2.8 MILES SOUTHEAST ALONG U.S. HIGHWAY 40,
 JV2982'ON THE TOP OF A CUT BANK NORTHEAST OF THE HIGHWAY, 49.96 FEET
 JV2982'NORTH-NORTHWEST OF THE TRIANGULATION STATION, 24 FEET EAST OF
 JV2982'A TREE, AND 21 FEET SOUTHWEST OF HOLLOW ROAD.  A STANDARD
 JV2982'REFERENCE-MARK DISK, STAMPED HOLLOW NO 1 1958 AND SET IN THE
 JV2982'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2983 ***********************************************************************
 JV2983  DESIGNATION -  HOLLOW RM 2
 JV2983  PID         -  JV2983
 JV2983  STATE/COUNTY-  MD/FREDERICK
 JV2983  COUNTRY     -  US
 JV2983  USGS QUAD   -  MIDDLETOWN (2016)
 JV2983
 JV2983                         *CURRENT SURVEY CONTROL
 JV2983  ______________________________________________________________________
 JV2983* NAD 83(1986) POSITION- 39 28 46.06   (N) 077 31 22.47   (W)   HD_HELD1
 JV2983* NAVD 88 ORTHO HEIGHT -   216.239 (meters)      709.44  (feet) ADJUSTED
 JV2983  ______________________________________________________________________
 JV2983  GEOID HEIGHT    -        -33.035 (meters)                     GEOID18
 JV2983  DYNAMIC HEIGHT  -        216.118 (meters)      709.05  (feet) COMP
 JV2983  MODELED GRAVITY -    980,063.4   (mgal)                       NAVD 88
 JV2983
 JV2983  VERT ORDER      -  SECOND    CLASS 0
 JV2983
 JV2983.The horizontal coordinates were determined by differentially corrected
 JV2983.hand held GPS observations or other comparable positioning techniques
 JV2983.and have an estimated accuracy of +/- 3 meters.
 JV2983
 JV2983.The orthometric height was determined by differential leveling and
 JV2983.adjusted by the NATIONAL GEODETIC SURVEY
 JV2983.in June 1991.
 JV2983
 JV2983.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2983.GEOID18 height accuracy estimate available here.
 JV2983
 JV2983.Click photographs - Photos may exist for this station.
 JV2983
 JV2983.The dynamic height is computed by dividing the NAVD 88
 JV2983.geopotential number by the normal gravity value computed on the
 JV2983.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2983.degrees latitude (g = 980.6199 gals.).
 JV2983
 JV2983.The modeled gravity was interpolated from observed gravity values.
 JV2983
 JV2983;                    North         East    Units  Estimated Accuracy
 JV2983;SPC MD       -   201,363.4     355,009.6     MT  (+/- 3 meters HH1 GPS) 
 JV2983
 JV2983_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8300573023(NAD 83)
 JV2983
 JV2983                          SUPERSEDED SURVEY CONTROL
 JV2983
 JV2983  NGVD 29 (11/26/84)  216.452  (m)          710.14   (f) ADJUSTED    2 0
 JV2983
 JV2983.Superseded values are not recommended for survey control.
 JV2983
 JV2983.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2983.See file dsdata.pdf to determine how the superseded data were derived.
 JV2983
 JV2983_MARKER: DR = REFERENCE MARK DISK
 JV2983_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2983_STAMPING: HOLLOW NO 2 1957
 JV2983_MARK LOGO: CGS
 JV2983_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2983+STABILITY: SURFACE MOTION
 JV2983
 JV2983  HISTORY     - Date     Condition        Report By
 JV2983  HISTORY     - 1957     MONUMENTED       CGS
 JV2983
 JV2983                          STATION DESCRIPTION
 JV2983
 JV2983'DESCRIBED BY COAST AND GEODETIC SURVEY 1957
 JV2983'3.3 MI SE FROM MYERSVILLE.
 JV2983'0.5 MILE NORTHEAST ALONG STATE HIGHWAY 153 FROM THE POST OFFICE
 JV2983'AT MYERSVILLE, THENCE 2.8 MILES SOUTHEAST ALONG U.S. HIGHWAY 40,
 JV2983'ON THE TOP OF A CUT BANK NORTHEAST OF THE HIGHWAY, 50.56 FEET
 JV2983'SOUTHEAST OF THE TRIANGULATION STATION, 35 FEET WEST-NORTHWEST
 JV2983'OF A TREE, AND 16 FEET SOUTHWEST OF THE CENTERLINE OF HOLLOW
 JV2983'ROAD.  A STANDARD REFERENCE-MARK DISK, STAMPED HOLLOW NO 2 1957
 JV2983'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES ABOVE
 JV2983'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5977 ***********************************************************************
 HV5977  DESIGNATION -  HOLLY
 HV5977  PID         -  HV5977
 HV5977  STATE/COUNTY-  MD/TALBOT
 HV5977  COUNTRY     -  US
 HV5977  USGS QUAD   -  OXFORD (2016)
 HV5977
 HV5977                         *CURRENT SURVEY CONTROL
 HV5977  ______________________________________________________________________
 HV5977* NAD 83(1991) POSITION- 38 43 52.65977(N) 076 12 10.96084(W)   ADJUSTED
 HV5977* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5977  ______________________________________________________________________
 HV5977  GEOID HEIGHT    -        -34.492 (meters)                     GEOID18
 HV5977  LAPLACE CORR    -         -4.52  (seconds)                    DEFLEC18
 HV5977  HORZ ORDER      -  THIRD
 HV5977
 HV5977.The horizontal coordinates were established by classical geodetic methods
 HV5977.and adjusted by the National Geodetic Survey in January 1992.
 HV5977
 HV5977.The orthometric height was scaled from a topographic map.
 HV5977
 HV5977.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5977.GEOID18 height accuracy estimate available here.
 HV5977
 HV5977.Click photographs - Photos may exist for this station.
 HV5977
 HV5977.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5977
 HV5977. The following values were computed from the NAD 83(1991) position.
 HV5977
 HV5977;                    North         East     Units Scale Factor Converg.
 HV5977;SPC MD       -   118,480.352   469,293.596   MT  0.99995301   +0 30 00.7
 HV5977;SPC MD       -   388,714.29  1,539,674.07   sFT  0.99995301   +0 30 00.7
 HV5977;UTM  18      - 4,287,645.645   395,431.697   MT  0.99973465   -0 45 10.0
 HV5977
 HV5977!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5977!SPC MD       -   1.00000529  x   0.99995301  =   0.99995830
 HV5977!UTM  18      -   1.00000529  x   0.99973465  =   0.99973994
 HV5977
 HV5977_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9543187645(NAD 83)
 HV5977
 HV5977                          SUPERSEDED SURVEY CONTROL
 HV5977
 HV5977  NAD 83(1986)-  38 43 52.65604(N)    076 12 10.97596(W) AD(       ) 3
 HV5977  NAD 27      -  38 43 52.23300(N)    076 12 12.17700(W) AD(       ) 3
 HV5977  USSD        -  38 43 52.61700(N)    076 12 11.99700(W) AD(       ) 3
 HV5977
 HV5977.Superseded values are not recommended for survey control.
 HV5977
 HV5977.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5977.See file dsdata.pdf to determine how the superseded data were derived.
 HV5977
 HV5977_MARKER: K = CLAY TILE PIPE
 HV5977_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV5977_SP_SET: OBJECT IMBEDDED IN GROUND
 HV5977_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5977
 HV5977  HISTORY     - Date     Condition        Report By
 HV5977  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5977  HISTORY     - 1940     SEE DESCRIPTION  CGS
 HV5977  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5977
 HV5977                          STATION DESCRIPTION
 HV5977
 HV5977'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5977'ON THE SOUTHERN SHORE OF EDGE CREEK, ABOUT 2 MILES E OF BROAD
 HV5977'CREEK AND NEARLY OPPOSITE ENTRANCE TO SPENCER CREEK, ON A MARSH
 HV5977'POINT ABOUT ON LEVEL WITH HIGH WATER, 13 YARDS N OF FRINGE OF
 HV5977'CEDAR TREES AND 100 YARDS W OF A COVE.  STATION MARK IS CENTER OF
 HV5977'2-INCH TILE PIPE PROJECTING 4 INCHES ABOVE SURFACE OF GROUND.
 HV5977'SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE BURIED
 HV5977'WITH THE TOP 2 INCHES BELOW THE SURFACE MARK.  REFERENCE MARK IS
 HV5977'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5977'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5977'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 HV5977'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 11.68 METERS
 HV5977'(38.3 FEET) FROM STATION S 14 DEG 24 MIN W.  OTHER DISTANCES AND
 HV5977'BEARINGS ARE AS FOLLOWS--NAIL IN BLAZE IN 8-INCH HOLLY TREE, 12.88
 HV5977'METERS (42.3 FEET), S 13 DEG 52 MIN W.  NAIL IN BLAZE IN 6-INCH
 HV5977'TREE, 14.35 METERS (47.1 FEET), S 50 DEG 44 MIN W. E CHIMNEY OF
 HV5977'HOUSE, 1/8 MILE, S 60 DEG 33 MIN W.  E GABLE OF BARN, 2-3/4 MILES,
 HV5977'N 59 DEG 44 MIN W.  S CHIMNEY OF HOUSE, 1-1/4 MILES, N 34 DEG 22
 HV5977'MIN W.  CHIMNEY OF SMALL HOUSE, 3/4 MILE, N 18 DEG 7 MIN W.
 HV5977'CHIMNEY OF DESERTED HOUSE, 1/2 MILE, N 8 DEG 20 MIN W. CHIMNEY OF
 HV5977'LARGE HOUSE, 3/4 MILE, N 62 DEG 2 MIN E.  S CHIMNEY OF HOUSE,
 HV5977'1-1/4 MILES, S 80 DEG 29 MIN E.
 HV5977
 HV5977                          STATION RECOVERY (1940)
 HV5977
 HV5977'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5977'SUBSURFACE MARK RECOVERED 18 INCHES BELOW SURFACE.  REFERENCE
 HV5977'MONUMENT RECOVERED IN GOOD CONDITION AND IS FLUSH WITH THE
 HV5977'SURFACE.  REFERENCE TREES DESTROYED.
 HV5977'
 HV5977'STATION IS ON THE SOUTHERN SHORE OF EDGE CREEK, ABOUT 2 MILES E OF
 HV5977'BROAD CREEK AND NEARLY OPPOSITE ENTRANCE TO SPENCER CREEK ON MARSH
 HV5977'POINT LEVEL WITH HIGH WATER, ABOUT 100 YARDS NW OF A COVE, 13
 HV5977'YARDS N OF FRINGE OF CEDAR TREES AT EDGE OF FIELD AND TOP OF BANK
 HV5977'AND ABOUT 300 YARDS E OF A GABLE-ROOFED HOUSE WITH TWO CHIMNEYS.
 HV5977
 HV5977                          STATION RECOVERY (1961)
 HV5977
 HV5977'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5977'STATION NOT RECOVERED AFTER A SEARCH OF THE AREA BY A TWO MAN
 HV5977'PARTY.  THERE IS NOW A WOODEN BULKHEAD AROUND THE POINT AND A
 HV5977'LAUNCHING RAMP.  IT IS BELIEVED THAT THE STATION AND REFERENCE
 HV5977'MARK HAVE BEEN DESTROYED BY THIS CONSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7457 ***********************************************************************
 HV7457  DESIGNATION -  HOLMEAD 1917
 HV7457  PID         -  HV7457
 HV7457  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7457  COUNTRY     -  US
 HV7457  USGS QUAD   -  LANHAM (2016)
 HV7457
 HV7457                         *CURRENT SURVEY CONTROL
 HV7457  ______________________________________________________________________
 HV7457* NAD 83(1993) POSITION- 38 55 28.79370(N) 076 50 47.81790(W)   ADJUSTED
 HV7457* NAVD 88 ORTHO HEIGHT -    70.    (meters)      230.    (feet) SCALED
 HV7457  ______________________________________________________________________
 HV7457  GEOID HEIGHT    -        -32.447 (meters)                     GEOID18
 HV7457  LAPLACE CORR    -         -5.15  (seconds)                    DEFLEC18
 HV7457  HORZ ORDER      -  SECOND
 HV7457
 HV7457.The horizontal coordinates were established by classical geodetic methods
 HV7457.and adjusted by the National Geodetic Survey in November 1994.
 HV7457
 HV7457.The orthometric height was scaled from a topographic map.
 HV7457
 HV7457.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7457.GEOID18 height accuracy estimate available here.
 HV7457
 HV7457.Click photographs - Photos may exist for this station.
 HV7457
 HV7457.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7457
 HV7457. The following values were computed from the NAD 83(1993) position.
 HV7457
 HV7457;                    North         East     Units Scale Factor Converg.
 HV7457;SPC MD       -   139,654.485   413,300.507   MT  0.99995021   +0 05 46.6
 HV7457;SPC MD       -   458,183.09  1,355,970.08   sFT  0.99995021   +0 05 46.6
 HV7457;UTM  18      - 4,310,037.695   339,922.953   MT  0.99991554   -1 09 37.7
 HV7457
 HV7457!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7457!SPC MD       -   0.99999415  x   0.99995021  =   0.99994436
 HV7457!UTM  18      -   0.99999415  x   0.99991554  =   0.99990969
 HV7457
 HV7457:                Primary Azimuth Mark                     Grid Az
 HV7457:SPC MD       -  HILL RESET                               225 08 00.4
 HV7457:UTM  18      -  HILL RESET                               226 23 24.7
 HV7457
 HV7457_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3992210037(NAD 83)
 HV7457
 HV7457|---------------------------------------------------------------------|
 HV7457| PID    Reference Object                     Distance      Geod. Az  |
 HV7457|                                                           dddmmss.s |
 HV7457| HV7458 HOLMEAD RM                           58.169 METERS 11905     |
 HV7457| HV7832 HILL RESET                          APPROX. 4.1 KM 2251347.0 |
 HV7457| HV7676 WHITE BARN SQUARE CUPOLA            APPROX. 4.6 KM 3080030.8 |
 HV7457|---------------------------------------------------------------------|
 HV7457
 HV7457                          SUPERSEDED SURVEY CONTROL
 HV7457
 HV7457  NAD 83(1991)-  38 55 28.79324(N)    076 50 47.81824(W) AD(       ) 2
 HV7457  NAD 83(1986)-  38 55 28.79156(N)    076 50 47.82971(W) AD(       ) 2
 HV7457  NAD 27      -  38 55 28.38800(N)    076 50 48.93200(W) AD(       ) 2
 HV7457  USSD        -  38 55 28.73000(N)    076 50 48.75500(W) AD(       ) 3
 HV7457
 HV7457.Superseded values are not recommended for survey control.
 HV7457
 HV7457.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7457.See file dsdata.pdf to determine how the superseded data were derived.
 HV7457
 HV7457_MARKER: Z = SEE DESCRIPTION
 HV7457_SETTING: 0 = UNSPECIFIED SETTING
 HV7457_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7457
 HV7457  HISTORY     - Date     Condition        Report By
 HV7457  HISTORY     - 1917     MONUMENTED       CGS
 HV7457
 HV7457                          STATION DESCRIPTION
 HV7457
 HV7457'DESCRIBED BY COAST AND GEODETIC SURVEY 1917 (CVH)
 HV7457'THIS STATION IS ABOUT 3 MILES E BY S FROM LANDOVER, NEAR THE NE
 HV7457'CORNER OF THE ROOF OF THE HOUSE OF WILLIAM F. HOLMEAD.
 HV7457'
 HV7457'NOT MARKED BUT REFERENCED BY THE FOLLOWING DISTANCES AND BEARINGS.
 HV7457'L IN ROOF, 2.89 METERS (9.48 FEET), N 62 DEG 29 MIN W, NE CORNER OF
 HV7457'ROOF, 2.048 METERS (6.72 FEET), N 45 DEG 44 MIN E, NE CORNER OF NE
 HV7457'CHIMNEY, 1.93 METERS (6.33 FEET), S 20 DEG 06 MIN W, A REFERENCE MARK
 HV7457'A BRONZE TABLET SET IN A GRANITE POST, IS 58.180 METERS (190.88 FEET)
 HV7457'FROM THE STATION S 60 DEG 55 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7458 ***********************************************************************
 HV7458  DESIGNATION -  HOLMEAD RM
 HV7458  PID         -  HV7458
 HV7458  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7458  COUNTRY     -  US
 HV7458  USGS QUAD   -  LANHAM (2016)
 HV7458
 HV7458                         *CURRENT SURVEY CONTROL
 HV7458  ______________________________________________________________________
 HV7458* NAD 83(1993) POSITION- 38 55 27.87695(N) 076 50 45.70747(W)   ADJUSTED
 HV7458* NAVD 88 ORTHO HEIGHT -    69.    (meters)      226.    (feet) SCALED
 HV7458  ______________________________________________________________________
 HV7458  GEOID HEIGHT    -        -32.449 (meters)                     GEOID18
 HV7458  LAPLACE CORR    -         -5.16  (seconds)                    DEFLEC18
 HV7458  HORZ ORDER      -  SECOND
 HV7458
 HV7458.The horizontal coordinates were established by classical geodetic methods
 HV7458.and adjusted by the National Geodetic Survey in November 1994.
 HV7458
 HV7458.The orthometric height was scaled from a topographic map.
 HV7458
 HV7458.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7458.GEOID18 height accuracy estimate available here.
 HV7458
 HV7458.Click photographs - Photos may exist for this station.
 HV7458
 HV7458.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7458
 HV7458. The following values were computed from the NAD 83(1993) position.
 HV7458
 HV7458;                    North         East     Units Scale Factor Converg.
 HV7458;SPC MD       -   139,626.302   413,351.389   MT  0.99995021   +0 05 47.9
 HV7458;SPC MD       -   458,090.63  1,356,137.02   sFT  0.99995021   +0 05 47.9
 HV7458;UTM  18      - 4,310,008.404   339,973.203   MT  0.99991534   -1 09 36.3
 HV7458
 HV7458!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7458!SPC MD       -   0.99999430  x   0.99995021  =   0.99994451
 HV7458!UTM  18      -   0.99999430  x   0.99991534  =   0.99990964
 HV7458
 HV7458_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3997310008(NAD 83)
 HV7458
 HV7458                          SUPERSEDED SURVEY CONTROL
 HV7458
 HV7458  NAD 83(1991)-  38 55 27.87649(N)    076 50 45.70778(W) AD(       ) 2
 HV7458  NAD 83(1986)-  38 55 27.87482(N)    076 50 45.71928(W) AD(       ) 2
 HV7458  NAD 27      -  38 55 27.47463(N)    076 50 46.82304(W) AD(       ) 2
 HV7458
 HV7458.Superseded values are not recommended for survey control.
 HV7458
 HV7458.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7458.See file dsdata.pdf to determine how the superseded data were derived.
 HV7458
 HV7458_MARKER: DR = REFERENCE MARK DISK
 HV7458_SETTING: 0 = UNSPECIFIED SETTING
 HV7458_SP_SET: GRANITE POST
 HV7458_STAMPING: HOLMEAD 1917
 HV7458_MARK LOGO: CGS
 HV7458_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7458
 HV7458  HISTORY     - Date     Condition        Report By
 HV7458  HISTORY     - 1958     MONUMENTED       CGS
 HV7458
 HV7458                          STATION DESCRIPTION
 HV7458
 HV7458'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7458'THE STATION IS LOCATED ABOUT 4 MILES NORTHEAST OF SEAT PLEASANT,
 HV7458'ABOUT 1.5 MILES EAST OF DODGE PARK AND 0.85 MILE NORTHEAST OF
 HV7458'STATE HIGHWAY NO. 202.  THE MARK IS LOCATED ABOUT 55 YARDS
 HV7458'SOUTHEAST OF SOUTHEAST CORNER OF BURNED HOUSE, 15 FEET NORTHWEST
 HV7458'OF CONCRETE PILLAR, 21-1/2 FEET NORTHEAST OF CONCRETE PILLAR AND
 HV7458'35 FEET EAST OF HOG PEN.  THE MARK IS A STANDARD REFERENCE MARK
 HV7458'DISK SET IN A REINFORCED 6X6 INCH GRANITE POST.  MARK PROJECTS
 HV7458'ABOUT 3 INCHES AND THE DISK IS STAMPED HOLMEAD 1917.
 HV7458'
 HV7458'TO REACH FROM THE JUNCTION OF STATE HIGHWAY NO. 202 AND STATE
 HV7458'HIGHWAY NO. 704 ON DODGE PARK, GO SOUTHEAST ON STATE HIGHWAY
 HV7458'NO. 202 FOR 1.15 MILES TO HOUSE ON LEFT AND DRIVE.  TURN LEFT
 HV7458'ON DRIVEWAY AND GO EASTERLY BETWEEN HOUSE AND BARN FOR 50 YARDS,
 HV7458'TURN RIGHT AND GO SOUTHERLY ALONG EAST SIDE OF BARN FOR 50 YARDS
 HV7458'TO STATION STAMP, TURN LEFT AND GO NORTHEAST ALONG FIELD ROAD
 HV7458'FOR 0.75 MILE TO BURNT HOUSE AND STATION AS DESCRIBED.
 HV7458'
 HV7458'THIS TRAVERSE STATION IS THE AZIMUTH MARK FOR TRIANGULATION
 HV7458'STATION STAMP AND WAS NOT OCCUPIED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7219 ***********************************************************************
 JV7219  DESIGNATION -  HOLSEY
 JV7219  PID         -  JV7219
 JV7219  STATE/COUNTY-  MD/MONTGOMERY
 JV7219  COUNTRY     -  US
 JV7219  USGS QUAD   -  DAMASCUS (2016)
 JV7219
 JV7219                         *CURRENT SURVEY CONTROL
 JV7219  ______________________________________________________________________
 JV7219* NAD 83(2011) POSITION- 39 18 35.54787(N) 077 11 18.04878(W)   ADJUSTED
 JV7219* NAD 83(2011) ELLIP HT-   191.735 (meters)        (06/27/12)   ADJUSTED
 JV7219* NAD 83(2011) EPOCH   -  2010.00
 JV7219* NAVD 88 ORTHO HEIGHT -   223.6   (meters)      734.    (feet) GPS OBS
 JV7219  ______________________________________________________________________
 JV7219  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7219  GEOID HEIGHT    -        -32.230 (meters)                     GEOID93
 JV7219  GEOID HEIGHT    -        -31.873 (meters)                     GEOID18
 JV7219  NAD 83(2011) X  -  1,095,818.202 (meters)                     COMP
 JV7219  NAD 83(2011) Y  - -4,818,725.216 (meters)                     COMP
 JV7219  NAD 83(2011) Z  -  4,019,115.014 (meters)                     COMP
 JV7219  LAPLACE CORR    -          2.41  (seconds)                    DEFLEC18
 JV7219
 JV7219  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7219  Standards:
 JV7219         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7219            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7219  -------------------------------------------------------------------
 JV7219  NETWORK    1.52   1.80           0.64   0.60   0.92     -0.05420379
 JV7219  -------------------------------------------------------------------
 JV7219  Click here for local accuracies and other accuracy information.
 JV7219
 JV7219.The horizontal coordinates were established by GPS observations
 JV7219.and adjusted by the National Geodetic Survey in June 2012.
 JV7219
 JV7219.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7219.been affixed to the stable North American tectonic plate. See 
 JV7219.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7219
 JV7219.The horizontal coordinates are valid at the epoch date displayed above
 JV7219.which is a decimal equivalence of Year/Month/Day.
 JV7219
 JV7219.The orthometric height was determined by GPS observations and a
 JV7219.high-resolution geoid model.
 JV7219
 JV7219.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7219.GEOID18 height accuracy estimate available here.
 JV7219
 JV7219.Click photographs - Photos may exist for this station.
 JV7219
 JV7219.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7219
 JV7219.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7219
 JV7219.The ellipsoidal height was determined by GPS observations
 JV7219.and is referenced to NAD 83.
 JV7219
 JV7219. The following values were computed from the NAD 83(2011) position.
 JV7219
 JV7219;                    North         East     Units Scale Factor Converg.
 JV7219;SPC MD       -   182,423.463   383,755.954   MT  0.99997849   -0 07 05.6
 JV7219;SPC MD       -   598,500.98  1,259,039.33   sFT  0.99997849   -0 07 05.6
 JV7219;UTM  18      - 4,353,447.805   311,327.365   MT  1.00003831   -1 23 12.3
 JV7219
 JV7219!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7219!SPC MD       -   0.99996992  x   0.99997849  =   0.99994841
 JV7219!UTM  18      -   0.99996992  x   1.00003831  =   1.00000823
 JV7219
 JV7219_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1132753447(NAD 83)
 JV7219
 JV7219                          SUPERSEDED SURVEY CONTROL
 JV7219
 JV7219  NAD 83(2007)-  39 18 35.54810(N)    077 11 18.04942(W) AD(2002.00) 0
 JV7219  ELLIP H (02/10/07)  191.756  (m)                       GP(2002.00)    
 JV7219  ELLIP H (08/30/02)  191.734  (m)                       GP(       ) 4 2
 JV7219  ELLIP H (04/01/98)  191.687  (m)                       GP(       ) 4 1
 JV7219  NAD 83(1993)-  39 18 35.54889(N)    077 11 18.05015(W) AD(       ) 1
 JV7219  ELLIP H (11/14/94)  191.685  (m)                       GP(       ) 4 2
 JV7219  NAD 83(1991)-  39 18 35.54881(N)    077 11 18.05027(W) AD(       ) 1
 JV7219  ELLIP H (02/09/94)  191.687  (m)                       GP(       ) 4 1
 JV7219
 JV7219.Superseded values are not recommended for survey control.
 JV7219
 JV7219.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7219.See file dsdata.pdf to determine how the superseded data were derived.
 JV7219
 JV7219_MARKER: DD = SURVEY DISK
 JV7219_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7219_STAMPING: HOLSEY 1993
 JV7219_MARK LOGO: MD-021
 JV7219_PROJECTION: RECESSED 10 CENTIMETERS
 JV7219_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7219_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7219+STABILITY: SURFACE MOTION
 JV7219_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7219+SATELLITE: SATELLITE OBSERVATIONS - June 21, 2014
 JV7219
 JV7219  HISTORY     - Date     Condition        Report By
 JV7219  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7219  HISTORY     - 20011113 GOOD             DMW
 JV7219  HISTORY     - 20021113 GOOD             POWELL
 JV7219  HISTORY     - 20130419 GOOD             BASE9
 JV7219  HISTORY     - 20140621 GOOD             GEOCAC
 JV7219
 JV7219                          STATION DESCRIPTION
 JV7219
 JV7219'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7219'FROM INTERSECTION OF MD RTE. 80 AND MD RTE. 27 SOUTH OF MT.AIRY, MD,
 JV7219'PROCEED SOUTH ON MD RTE. 27 FOR 0.65 MILES (1.05 KM) TO HOLSEY ROAD.
 JV7219'TURN RIGHT AND PROCEED EAST ON HOLSEY ROAD FOR 0.6 MILES (1.0 KM) TO
 JV7219'STATION ON RIGHT. STATION IS NEAR THE START OF A CURVE IN HOLSEY ROAD
 JV7219'TO THE LEFT, 4 FEET (1.2 M) SOUTHEAST OF THE EDGE OF PAVING AND 8
 JV7219'FEET (2.4 M) NORTHEAST OF THE END OF AN OLD WIRE FENCE. STATION IS
 JV7219'BRASS DISK SET IN TOP OF 8 INCH ROUND CONCRETE MONUMENT SET FLUSH
 JV7219'WITH THE GROUND.
 JV7219
 JV7219                          STATION RECOVERY (2001)
 JV7219
 JV7219'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (DMM)
 JV7219'RECOVERY NOTE BY DMW 2001.
 JV7219'RECOVERED IN GOOD CONDITION.
 JV7219
 JV7219                          STATION RECOVERY (2002)
 JV7219
 JV7219'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV7219'DESCRIPTION CORRECTION = TURN RIGHT AND PROCEED EAST ON HOSLEY ROAD
 JV7219'FOR 0.6 MILES TO STATION ON THE RIGHT. CONTINUE AS DESCRIBED BY NGS.
 JV7219
 JV7219                          STATION RECOVERY (2013)
 JV7219
 JV7219'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2013 (DRD)
 JV7219'THE FENCE CORNER NOTED IN THE 1993 DESCRIPTION IS GONE.  THE MARK IS
 JV7219'16.74 M (54.9 FT) NORTHEAST OF MAILBOX 9036 AND IS RECESSED 0.08 M
 JV7219'(0.3 FT).
 JV7219
 JV7219                          STATION RECOVERY (2014)
 JV7219
 JV7219'RECOVERY NOTE BY GEOCACHING 2014 (DPB)
 JV7219'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1676 ***********************************************************************
 HU1676  DESIGNATION -  HOLSTON
 HU1676  PID         -  HU1676
 HU1676  STATE/COUNTY-  MD/WORCESTER
 HU1676  COUNTRY     -  US
 HU1676  USGS QUAD   -  NINEPIN BRANCH (2016)
 HU1676
 HU1676                         *CURRENT SURVEY CONTROL
 HU1676  ______________________________________________________________________
 HU1676* NAD 83(1991) POSITION- 38 16 06.91702(N) 075 15 05.40756(W)   ADJUSTED
 HU1676* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 HU1676  ______________________________________________________________________
 HU1676  GEOID HEIGHT    -        -36.106 (meters)                     GEOID18
 HU1676  LAPLACE CORR    -         -0.46  (seconds)                    DEFLEC18
 HU1676  HORZ ORDER      -  FIRST
 HU1676
 HU1676.The horizontal coordinates were established by classical geodetic methods
 HU1676.and adjusted by the National Geodetic Survey in January 1992.
 HU1676
 HU1676.The orthometric height was scaled from a topographic map.
 HU1676
 HU1676.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1676.GEOID18 height accuracy estimate available here.
 HU1676
 HU1676.Click photographs - Photos may exist for this station.
 HU1676
 HU1676.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1676
 HU1676. The following values were computed from the NAD 83(1991) position.
 HU1676
 HU1676;                    North         East     Units Scale Factor Converg.
 HU1676;SPC MD       -    68,281.396   553,004.567   MT  1.00000561   +1 05 50.7
 HU1676;SPC MD       -   224,019.88  1,814,315.82   sFT  1.00000561   +1 05 50.7
 HU1676;UTM  18      - 4,235,646.012   477,999.549   MT  0.99960596   -0 09 20.8
 HU1676
 HU1676!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1676!SPC MD       -   1.00000382  x   1.00000561  =   1.00000943
 HU1676!UTM  18      -   1.00000382  x   0.99960596  =   0.99960978
 HU1676
 HU1676:                Primary Azimuth Mark                     Grid Az
 HU1676:SPC MD       -  HOLSTON AZ MK                            201 55 42.3
 HU1676:UTM  18      -  HOLSTON AZ MK                            203 10 53.8
 HU1676
 HU1676_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7799935646(NAD 83)
 HU1676
 HU1676|---------------------------------------------------------------------|
 HU1676| PID    Reference Object                     Distance      Geod. Az  |
 HU1676|                                                           dddmmss.s |
 HU1676| HU1525 BERLIN PENINSULA CANNING STACK      APPROX. 5.8 KM 0195858.1 |
 HU1676| HU1529 BERLIN STANDPIPE                    APPROX. 7.1 KM 0241159.8 |
 HU1676| HU2625 HOLSTON RM 3                         29.455 METERS 03027     |
 HU1676| DC7394 HOLSTON RM 1                         24.607 METERS 06935     |
 HU1676| HU2626 HOLSTON RM 5                         39.133 METERS 08059     |
 HU1676| DC7395 HOLSTON RM 2                         23.899 METERS 17345     |
 HU1676| HU2595 HOLSTON AZ MK                       APPROX. 0.8 KM 2030133.0 |
 HU1676|---------------------------------------------------------------------|
 HU1676
 HU1676                          SUPERSEDED SURVEY CONTROL
 HU1676
 HU1676  NAD 83(1986)-  38 16 06.90336(N)    075 15 05.43797(W) AD(       ) 1
 HU1676  NAD 27      -  38 16 06.48500(N)    075 15 06.75000(W) AD(       ) 1
 HU1676
 HU1676.Superseded values are not recommended for survey control.
 HU1676
 HU1676.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1676.See file dsdata.pdf to determine how the superseded data were derived.
 HU1676
 HU1676_MARKER: DS = TRIANGULATION STATION DISK
 HU1676_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1676_STAMPING: HOLSTON 1942
 HU1676_MARK LOGO: CGS
 HU1676_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1676_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1676+STABILITY: SURFACE MOTION
 HU1676_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1676+SATELLITE: SATELLITE OBSERVATIONS - August 14, 1981
 HU1676
 HU1676  HISTORY     - Date     Condition        Report By
 HU1676  HISTORY     - 1942     MONUMENTED       CGS
 HU1676  HISTORY     - 1942     GOOD             CGS
 HU1676  HISTORY     - 1961     MARK NOT FOUND   CGS
 HU1676  HISTORY     - 1962     GOOD             MDDT
 HU1676  HISTORY     - 19810814 GOOD             NGS
 HU1676  HISTORY     - 19990116 MARK NOT FOUND   MDSHA
 HU1676
 HU1676                          STATION DESCRIPTION
 HU1676
 HU1676'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU1676'THE STATION IS LOCATED 3.8 MILES NE OF THE VILLAGE OF NEWARK.  IT
 HU1676'IS 13 FEET W OF A CHICKEN YARD FENCE, 71 FEET S OF A DIRT FARM
 HU1676'ROAD IN A CULTIVATED FIELD.  MARK IS STAMPED HOLSTON 1942 AND IS
 HU1676'SET 18 INCHES BELOW THE SURFACE.
 HU1676'
 HU1676'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 HU1676'BRONZE DISKS SET IN CONCRETE, AS DESCRIBED.
 HU1676'
 HU1676'REFERENCE MARK NO.1 IS E OF THE STATION.  IT IS 6 INCHES W OF A
 HU1676'BROODER HOUSE AND IS STAMPED HOLSTON NO.1 1942 AND IS SET FLUSH.
 HU1676'
 HU1676'REFERENCE MARK NO.2 IS SSE OF THE STATION, IN A CHICKEN YARD
 HU1676'FENCE CORNER.  IT IS STAMPED HOLSTON NO.2 1942 AND PROJECTS 4
 HU1676'INCHES.
 HU1676'
 HU1676'THE AZIMUTH MARK IS APPROXIMATELY 0.3 MILE SSE OF THE STATION.  IT
 HU1676'IS 12 FEET E OF TELEPHONE POLE NO.213 AND STAMPED HOLSTON 1942 AND
 HU1676'PROJECTS 3 INCHES.  TO REACH FROM THE STATION GO S 0.05 MILE TO
 HU1676'STATE HIGHWAY 113, TURN RIGHT AND GO 0.3 MILE TO AZIMUTH MARK ON
 HU1676'RIGHT.
 HU1676'
 HU1676'TO REACH THE STATION FROM THE POST OFFICE IN THE VILLAGE OF NEWARK
 HU1676'GO NORTHERLY ON STATE HIGHWAY 113 FOR 3.8 MILES TO FARM ROAD LEFT,
 HU1676'TURN LEFT AND GO 0.25 MILE TO THE C.W. HOLSTON HOUSE, HERE BEAR
 HU1676'LEFT AROUND THE HOUSE FOR 0.05 MILE TO THE STATION ON LEFT AS
 HU1676'DESCRIBED.
 HU1676'
 HU1676'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION OUTTEN.
 HU1676'
 HU1676'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION MORRIS.
 HU1676'
 HU1676'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION LIBERTY.
 HU1676'
 HU1676'A 90-FOOT TOWER WILL SEE A 126-FOOT LIGHT AT STATION BERLIN.
 HU1676
 HU1676                          STATION RECOVERY (1942)
 HU1676
 HU1676'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HU1676'RECOVERED IN GOOD CONDITION.
 HU1676
 HU1676                          STATION RECOVERY (1961)
 HU1676
 HU1676'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (RMS)
 HU1676'THE STATION WAS SEARCHED FOR THOROUGHLY BY FOUR MEN FOR ONE HOUR
 HU1676'BUT WAS NOT FOUND.  IT IS NOT CERTAIN WHETHER THE DIRT FARM ROAD
 HU1676'HAS SHIFTED.  THE CHICKEN HOUSE AND FENCE NO LONGER
 HU1676'EXIST.  MR. BRANFORD, THE OWNER STATED THAT R.M. 1 AND R.M. 2
 HU1676'WERE DESTROYED BY HIM PLOWING.  THE AZIMUTH MARK WAS SEARCHED FOR
 HU1676'BUT COULD NOT BE FOUND.  THE STATION MARK IS PROBABLY INTACT BUT
 HU1676'THE LACK OF ANY REFERENCE PREVENTED RECOVERY.
 HU1676
 HU1676                          STATION RECOVERY (1962)
 HU1676
 HU1676'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1962
 HU1676'THE STATION AND AZIMUTH MARKS WERE RECOVERED IN GOOD
 HU1676'CONDITION.  REFERENCE MARKS 1 AND 2 WERE DESTROYED BY PLOWING
 HU1676'ACCORDING TO PROPERTY OWNER.  REFERENCE MARKS 3 AND 4 WERE SET AT
 HU1676'THIS TIME.
 HU1676'
 HU1676'STATION IS LOCATED 6 MILES SW OF BERLIN AND 3.8 MILES NE OF THE
 HU1676'VILLAGE OF NEWARK, IN A CULTIVATED FIELD ON THE FARM OF
 HU1676'MR. C.W. HOLSTON, 71.0 FT. S OF THE CENTERLINE OF THE FARM ROAD,
 HU1676'96.5 FT. SSW OF POWER POLE 3, 149.1 FT. W OF AN 18 IN MAPLE
 HU1676'TREE, AND 126.5 FT. SW OF THE SW CORNER OF A WOODEN SHED.  MARK
 HU1676'IS STAMPED HOLSTON, 1942, AND IS SET 18 INCHES BELOW THE SURFACE.
 HU1676'
 HU1676'REFERENCE MARK NO. 3, IS 17.0 FT. S OF THE CENTERLINE OF THE FARM
 HU1676'ROAD, 85.7 FT. W OF THE SW CORNER OF THE BARN, 1.5 FT. E OF POLE
 HU1676'3.  A STANDARD DISK SET IN A CONCRETE POST PROJECTING 6 INCHES
 HU1676'AND STAMPED HOLSTON NO. 3, 1962.
 HU1676'
 HU1676'REFERENCE MARK NO. 4, IS SET BETWEEN THE WEST END OF 2 WOODEN
 HU1676'SHEDS, 36.5 FT. S OF THE CENTERLINE OF THE FARM ROAD AND 101.3
 HU1676'FT. SE OF POLE 3.  A STANDARD DISK SET IN A CONCRETE POST
 HU1676'PROJECTING 6 INCHES AND STAMPED HOLSTON NO. 4, 1962.
 HU1676'
 HU1676'THE AZIMUTH MARK IS APPROXIMATELY 0.3 MILE SSE OF THE STATION,
 HU1676'70.0 FT. NW OF THE CENTERLINE OF U.S. ROUTE 113 AND 9.6 FT. E OF
 HU1676'POLE 213.  STAMPED HOLSTON, 1942, AND PROJECTS 3 INCHES.  TO
 HU1676'REACH FROM THE STATION, RETURN TO THE JUNCTION OF DOWNS ROAD AND
 HU1676'U.S. ROUTE 113 (SEE DIRECTIONS TO STATION) AND PROCEED SW ALONG
 HU1676'U.S. ROUTE 113 FOR 0.2 MILE TO MARK ON THE RIGHT.
 HU1676'
 HU1676'TO REACH THE STATION FROM THE JUNCTION OF U.S. ROUTES 50 AND 113
 HU1676'(JUST NE OF BERLIN) PROCEED SW ON U.S. ROUTE 113 FOR 6.2 MILES TO
 HU1676'THE JUNCTION OF DOWNS ROAD RIGHT, THENCE NW ON DOWNS ROAD FOR 0.3
 HU1676'MILE TO THE FARM ROAD RIGHT, THENCE E ON THE FARM ROAD FOR 0.2
 HU1676'MILE TO STATION ON THE RIGHT AS DESCRIBED ABOVE.
 HU1676
 HU1676                          STATION RECOVERY (1981)
 HU1676
 HU1676'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HU1676'THE STATION MARK, REFERENCE MARK THREE, AND THE AZIMUTH MARK WERE
 HU1676'RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK FOUR WAS FOUND
 HU1676'DESTROYED.  A NEW REFERENCE MARK FIVE WAS ESTABLISHED.  A SHORTER
 HU1676'DISTANCE WAS NOTED TO REFERENCE MARK THREE.  IT APPEARED THAT THE
 HU1676'PUBLISHED DISTANCE TO REFERENCE MARK THREE WAS MADE MARK TO MARK.  THE
 HU1676'DIRECTION FROM THE AZIMUTH MARK TO REFERENCE MARK THREE WAS WITHIN
 HU1676'CLOSE AGREEMENT WITH THE MOST RECENT INFORMATION AVAILABLE.
 HU1676'THE STATION IS LOCATED ABOUT 16 KM (9.95 MI) NORTHEAST OF SNOWHILL, 16
 HU1676'KM (9.95 MI) SOUTHWEST OF OCEAN CITY AND 4 KM (2.50 MI) NORTHEAST OF
 HU1676'NEWARK.  OWNERSHIP--THOMAS H. TRUITT, ROUTE 1, BOX 356, NEWARK,
 HU1676'MARYLAND 21841.
 HU1676'TO REACH THE STATION FROM THE POST OFFICE IN NEWARK, GO SOUTHEAST ON
 HU1676'PATEY WOODS ROAD FOR 0.45 KM (0.30 MI) TO A CROSSROADS.  TURN LEFT AND
 HU1676'GO NORTHEAST ON U.S. HIGHWAY FOR 3.55 KM (2.20 MI) TO A SIDE ROAD
 HU1676'LEFT.  BEAR LEFT AND GO NORTH ON DOWNS ROAD FOR 0.58 KM (0.35 MI) TO A
 HU1676'FARM ROAD ON THE RIGHT.  TURN RIGHT AND GO EAST ON THE FARM ROAD FOR
 HU1676'0.15 KM (0.10 MI) TO THE STATION ON THE RIGHT IN A CULTIVATED FIELD.
 HU1676'THE STATION IS SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST
 HU1676'RECESSED 0.33 M (1.1 FT) BELOW GROUND.  IT IS 23.3 M (76.4 FT) SOUTH
 HU1676'OF THE CENTER OF THE FARM ROAD, 18.4 M (60.4 FT) SOUTH OF A FENCE
 HU1676'LINE, 32.6 M (107.0 FT) WEST OF THE NORTHWEST CORNER OF A FARM
 HU1676'BUILDING, 64.8 M (212.6 FT) EAST OF A POWERLINE POLE NUMBERED P 25 AND
 HU1676'28.3 M (92.8 FT) NORTH OF A WIRE FENCE LINE.
 HU1676
 HU1676                          STATION RECOVERY (1999)
 HU1676
 HU1676'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HU1676'THE STATION WAS NOT SEARCHED FOR AT THIS TIME .  AN ATTEMPT WAS MADE
 HU1676'TO CONTACT THE PROPERTY OWNERS AT THIS TIME WHICH WAS NOT SUCCESSFULL.
 HU1676'THE STATION IS LOCATED IN A CULTIVATED FIELD WHICH HAS A CROP PLANTED
 HU1676'AT THIS TIME.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2595 ***********************************************************************
 HU2595  DESIGNATION -  HOLSTON AZ MK
 HU2595  PID         -  HU2595
 HU2595  STATE/COUNTY-  MD/WORCESTER
 HU2595  COUNTRY     -  US
 HU2595  USGS QUAD   -  NINEPIN BRANCH (2016)
 HU2595
 HU2595                         *CURRENT SURVEY CONTROL
 HU2595  ______________________________________________________________________
 HU2595* NAD 83(1991) POSITION- 38 15 43.89556(N) 075 15 17.81703(W)   NO CHECK
 HU2595* NAVD 88 ORTHO HEIGHT -    11.896 (meters)       39.03  (feet) ADJUSTED
 HU2595  ______________________________________________________________________
 HU2595  GEOID HEIGHT    -        -36.115 (meters)                     GEOID18
 HU2595  LAPLACE CORR    -         -0.46  (seconds)                    DEFLEC18
 HU2595  DYNAMIC HEIGHT  -         11.888 (meters)       39.00  (feet) COMP
 HU2595  MODELED GRAVITY -    979,996.7   (mgal)                       NAVD 88
 HU2595
 HU2595  HORZ ORDER      -  THIRD
 HU2595  VERT ORDER      -  SECOND    CLASS I
 HU2595
 HU2595.The horizontal coordinates were established by classical geodetic methods
 HU2595.and adjusted by the National Geodetic Survey in January 1992.
 HU2595
 HU2595.No horizontal observational check was made to the station.
 HU2595
 HU2595.The orthometric height was determined by differential leveling and
 HU2595.adjusted by the NATIONAL GEODETIC SURVEY
 HU2595.in June 2004.
 HU2595
 HU2595.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2595.GEOID18 height accuracy estimate available here.
 HU2595
 HU2595.Click photographs - Photos may exist for this station.
 HU2595
 HU2595.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2595
 HU2595.The dynamic height is computed by dividing the NAVD 88
 HU2595.geopotential number by the normal gravity value computed on the
 HU2595.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2595.degrees latitude (g = 980.6199 gals.).
 HU2595
 HU2595.The modeled gravity was interpolated from observed gravity values.
 HU2595
 HU2595. The following values were computed from the NAD 83(1991) position.
 HU2595
 HU2595;                    North         East     Units Scale Factor Converg.
 HU2595;SPC MD       -    67,565.911   552,716.531   MT  1.00000679   +1 05 42.9
 HU2595;SPC MD       -   221,672.49  1,813,370.82   sFT  1.00000679   +1 05 42.9
 HU2595;UTM  18      - 4,234,937.282   477,696.056   MT  0.99960613   -0 09 28.4
 HU2595
 HU2595!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2595!SPC MD       -   1.00000380  x   1.00000679  =   1.00001059
 HU2595!UTM  18      -   1.00000380  x   0.99960613  =   0.99960993
 HU2595
 HU2595_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7769634937(NAD 83)
 HU2595
 HU2595                          SUPERSEDED SURVEY CONTROL
 HU2595
 HU2595  NAD 83(1986)-  38 15 43.88199(N)    075 15 17.84767(W) AD(       ) 3
 HU2595
 HU2595.Superseded values are not recommended for survey control.
 HU2595
 HU2595.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2595.See file dsdata.pdf to determine how the superseded data were derived.
 HU2595
 HU2595_MARKER: DZ = AZIMUTH MARK DISK
 HU2595_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2595_STAMPING: HOLSTON 1942
 HU2595_MARK LOGO: CGS
 HU2595_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2595_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2595+STABILITY: SURFACE MOTION
 HU2595_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU2595+SATELLITE: SATELLITE OBSERVATIONS - July 16, 1998
 HU2595
 HU2595  HISTORY     - Date     Condition        Report By
 HU2595  HISTORY     - 1942     MONUMENTED       CGS
 HU2595  HISTORY     - 19840814 GOOD             NGS
 HU2595  HISTORY     - 19980716 GOOD             MDSHA
 HU2595
 HU2595                          STATION DESCRIPTION
 HU2595
 HU2595'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2595'THE MARK IS LOCATED ABOUT 15.5 KM (9.65 MI) NORTHEAST OF SNOWHILL,
 HU2595'16.5 KM (10.25 MI) SOUTHWEST OF OCEAN CITY AND 3.5 KM (2.15 MI)
 HU2595'NORTHEAST OF NEWARK.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 HU2595'TO REACH FROM THE POST OFFICE AT NEWARK, GO SOUTHEAST ON PATEY WOODS
 HU2595'ROAD FOR 0.45 KM (0.30 MI) TO A CROSSROADS.  TURN LEFT AND GO
 HU2595'NORTHEAST ON U.S. HIGHWAY 113 FOR 3.28 KM (2.05 MI) TO THE MARK ON THE
 HU2595'LEFT.
 HU2595'THE MARK IS SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST FLUSH
 HU2595'WITH THE GROUND.  IT IS 21.3 M (69.9 FT) NORTHWEST OF THE CENTER OF
 HU2595'U.S. HIGHWAY 113, 0.4 M (1.3 FT) SOUTHEAST OF A WITNESS POST, 3.6 M
 HU2595'(11.8 FT) NORTHEAST OF A POWERLINE POLE NUMBERED 213 AND 11.3 M
 HU2595'(37.1 FT) SOUTHWEST OF THE SOUTH CORNER OF A CULTIVATED FIELD.
 HU2595
 HU2595                          STATION RECOVERY (1998)
 HU2595
 HU2595'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 HU2595'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1840 ***********************************************************************
 HU1840  DESIGNATION -  HOLT
 HU1840  PID         -  HU1840
 HU1840  STATE/COUNTY-  MD/WORCESTER
 HU1840  COUNTRY     -  US
 HU1840  USGS QUAD   -  POCOMOKE CITY (2016)
 HU1840
 HU1840                         *CURRENT SURVEY CONTROL
 HU1840  ______________________________________________________________________
 HU1840* NAD 83(1993) POSITION- 38 03 43.14947(N) 075 33 01.99963(W)   ADJUSTED
 HU1840* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 HU1840  ______________________________________________________________________
 HU1840  GEOID HEIGHT    -        -36.299 (meters)                     GEOID18
 HU1840  LAPLACE CORR    -         -1.00  (seconds)                    DEFLEC18
 HU1840  HORZ ORDER      -  FIRST
 HU1840
 HU1840.The horizontal coordinates were established by classical geodetic methods
 HU1840.and adjusted by the National Geodetic Survey in November 1994.
 HU1840
 HU1840.The orthometric height was scaled from a topographic map.
 HU1840
 HU1840.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1840.GEOID18 height accuracy estimate available here.
 HU1840
 HU1840.Click photographs - Photos may exist for this station.
 HU1840
 HU1840.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1840
 HU1840. The following values were computed from the NAD 83(1993) position.
 HU1840
 HU1840;                    North         East     Units Scale Factor Converg.
 HU1840;SPC MD       -    44,892.552   527,202.055   MT  1.00004992   +0 54 35.0
 HU1840;SPC MD       -   147,284.98  1,729,662.08   sFT  1.00004992   +0 54 35.0
 HU1840;SPC VA S     - 1,195,889.032 3,758,801.522   MT  1.00001879   +1 47 24.3
 HU1840;SPC VA S     - 3,923,512.60 12,332,001.33   sFT  1.00001879   +1 47 24.3
 HU1840;UTM  18      - 4,212,835.587   451,703.237   MT  0.99962873   -0 20 22.0
 HU1840
 HU1840!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1840!SPC MD       -   1.00000448  x   1.00004992  =   1.00005440
 HU1840!SPC VA S     -   1.00000448  x   1.00001879  =   1.00002327
 HU1840!UTM  18      -   1.00000448  x   0.99962873  =   0.99963321
 HU1840
 HU1840:                Primary Azimuth Mark                     Grid Az
 HU1840:SPC MD       -  HOLT RM 3                                194 04 05.0
 HU1840:SPC VA S     -  HOLT RM 3                                193 11 15.7
 HU1840:UTM  18      -  HOLT RM 3                                195 19 02.0
 HU1840
 HU1840_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5170312835(NAD 83)
 HU1840
 HU1840|---------------------------------------------------------------------|
 HU1840| PID    Reference Object                     Distance      Geod. Az  |
 HU1840|                                                           dddmmss.s |
 HU1840| DC7396 HOLT RM 1                            56.342 METERS 03424     |
 HU1840| DC7397 HOLT RM 2                            52.227 METERS 13410     |
 HU1840| DC7398 HOLT RM 3                                          1945840.0 |
 HU1840| HU1837 POCOMOKE CITY S TRANSM TOWER        APPROX. 2.5 KM 2863043.2 |
 HU1840| HU1838 POCOMOKE CITY N TRANSM TOWER        APPROX. 2.7 KM 2902039.6 |
 HU1840| HU1836 POCOMOKE CITY MASON CAN CO TK       APPROX. 2.4 KM 2932928.2 |
 HU1840| HU1841 POCOMOKE CITY MUN STANDPIPE         APPROX. 1.5 KM 3053359.6 |
 HU1840| HU1839 POCOMOKE CITY PUB SCHOOL CUP        APPROX. 0.9 KM 3130712.6 |
 HU1840|---------------------------------------------------------------------|
 HU1840
 HU1840                          SUPERSEDED SURVEY CONTROL
 HU1840
 HU1840  NAD 83(1991)-  38 03 43.14953(N)    075 33 01.99843(W) AD(       ) 1
 HU1840  NAD 83(1986)-  38 03 43.14575(N)    075 33 02.03109(W) AD(       ) 1
 HU1840  NAD 27      -  38 03 42.70900(N)    075 33 03.30000(W) AD(       ) 1
 HU1840
 HU1840.Superseded values are not recommended for survey control.
 HU1840
 HU1840.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1840.See file dsdata.pdf to determine how the superseded data were derived.
 HU1840
 HU1840_MARKER: DS = TRIANGULATION STATION DISK
 HU1840_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1840_STAMPING: HOLT 1932
 HU1840_MARK LOGO: CGS
 HU1840_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1840+STABILITY: SURFACE MOTION
 HU1840
 HU1840  HISTORY     - Date     Condition        Report By
 HU1840  HISTORY     - 1932     MONUMENTED       CGS
 HU1840  HISTORY     - 1934     GOOD             CGS
 HU1840  HISTORY     - 1942     GOOD             CGS
 HU1840  HISTORY     - 1942     GOOD             CGS
 HU1840  HISTORY     - 1958     GOOD             CGS
 HU1840  HISTORY     - 20120610 GOOD             GEOCAC
 HU1840
 HU1840                          STATION DESCRIPTION
 HU1840
 HU1840'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (CDM)
 HU1840'ON VACANT LOT OWNED BY THE HOLT OIL COMPANY AT JUNCTION OF HIGHWAY
 HU1840'13 AND HIGHWAY E TO STOCKTON, ABOUT 1 MILE E OF POCOMOKE CITY.  THIS
 HU1840'LOT IS DIRECTLY ACROSS ROAD FROM THE DRYDEN MILLING
 HU1840'COMPANY.  STATION IS IN THE W CORNER OF VACANT LOT 42.7 METERS W
 HU1840'OF SW CORNER OF FILLING STATION.  60.4 METERS NW OF CENTER LINE
 HU1840'OF ROUTE 13.  62.5 METERS SW OF CENTER LINE OF ROUTE 13.  ROUTE
 HU1840'13 MAKES A RIGHT TURN AT THE FILLING STATION.
 HU1840'
 HU1840'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HU1840'DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HU1840'
 HU1840'REFERENCE MARK NO.1 IS NE OF THE STATION ON SW SIDE OF ROUTE 13,
 HU1840'6.4 METERS SW OF CENTER LINE.  3 METERS S OF CONCRETE POST WITH
 HU1840'DANGER SIGN ON SW SIDE OF HIGHWAY.
 HU1840'
 HU1840'REFERENCE MARK NO.2 IS SE OF THE STATION ON NW SIDE OF HIGHWAY
 HU1840'13, 8.2 METERS NW OF CENTER LINE.
 HU1840'
 HU1840'REFERENCE MARK NO.3 IS SSW OF STATION AT NE EDGE OF PINE WOOD
 HU1840'LOT ON WSW SIDE OF ROUTE 13, 8 METERS WSW OF CENTER LINE OF
 HU1840'ROUTE 13.  24 METERS S OF CULVERT UNDER HIGHWAY.
 HU1840'
 HU1840'TO REACH STATION TAKE ROUTE 13 IN A SOUTHEASTERLY DIRECTION FROM
 HU1840'POCOMOKE CITY AND FOLLOW TO FILLING STATION, WHICH IS OPPOSITE THE
 HU1840'MILLING COMPANY, AT THE JUNCTION OF THE ROAD TO STOCKTON.  TURN W
 HU1840'AROUND FILLING STATION INTO VACANT LOT AND GO ABOUT 60 METERS TO
 HU1840'W CORNER AND STATION.
 HU1840'
 HU1840'HEIGHT OF SIGNAL ABOVE STATION MARK - 38 METERS.
 HU1840
 HU1840                          STATION RECOVERY (1934)
 HU1840
 HU1840'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU1840'STATION AND REFERENCE MARKS ARE AS DESCRIBED.  TO REACH THE
 HU1840'HIGHWAY INTERSECTION AND FILLING STATION FROM POCOMOKE, MD., START
 HU1840'AT THE CITY HALL IN POCOMOKE AND 1.6 MILES ALONG MARKET STREET
 HU1840'(ROUTE 13) SOUTHEASTERLY.
 HU1840'
 HU1840'A SMALL BUILDING HAS BEEN CONSTRUCTED ON CONCRETE BLOCKS.  IT IS
 HU1840'TO BE USED AS A GREENHOUSE.  THE STATION IS 122 FEET SW OF THE
 HU1840'SW CORNER OF THIS BUILDING.  REFERENCE MARK NO.1 IS 44 FEET WNW
 HU1840'OF THE NW CORNER.  A 113-FOOT TOWER IS NECESSARY.
 HU1840
 HU1840                          STATION RECOVERY (1942)
 HU1840
 HU1840'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1840'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD WITH THE
 HU1840'ORIGINAL DESCRIPTION--
 HU1840'
 HU1840'(1) THE CONCRETE POST WITH THE DANGER SIGN ON THE SW SIDE
 HU1840'OF THE HIGHWAY IS GONE.
 HU1840'
 HU1840'(2) THE STATION IS 121 FEET SW OF THE SW CORNER OF A SMALL
 HU1840'HOUSE, NOT 122 FEET SW OF THE SW CORNER OF A GREEN HOUSE.
 HU1840'
 HU1840'(3) REFERENCE MARK NO.3 IS 8.7 METERS S OF THE CENTER LINE,
 HU1840'NOT 8 METERS WSW.
 HU1840'
 HU1840'(4) REFERENCE MARK NO.3 IS 32.5 METERS S OF THE CULVERT, NOT
 HU1840'24 METERS S OF A CULVERT.
 HU1840'
 HU1840'THIS STATION IS LOCATED 1.6 MILES SE OF THE CITY HALL IN POCOMOKE
 HU1840'CITY ALONG U.S. HIGHWAY 13 ON THE W SIDE OF THE ROAD, IN A LOT
 HU1840'OWNED BY THE HOLT OIL CO., AT THE JUNCTION OF HIGHWAYS 13 AND
 HU1840'113.  THIS LOT IS DIRECTLY ACROSS FROM THE DRYDEN MILLING
 HU1840'COMPANY.  THE STATION IS IN THE W CORNER OF A VACANT LOT, 42.7
 HU1840'METERS W OF THE SW CORNER OF A FILLING STATION, 60.4 METERS NW
 HU1840'OF THE CENTER LINE OF HIGHWAY 13, 62.5 METERS SW OF THE CENTER
 HU1840'LINE OF HIGHWAY 13.  HIGHWAY 13 MAKES A RIGHT TURN AT THE FILLING
 HU1840'STATION, AND 121 FEET SW OF THE SW CORNER OF A SMALL HOUSE.  THE
 HU1840'STATION IS A BRONZE DISK TRIANGULATION STATION MARK, STAMPED
 HU1840'HOLT 1932, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE
 HU1840'MONUMENT, WHICH EXTENDS 3 INCHES ABOVE THE GROUND.  THE STATION IS
 HU1840'IN GOOD CONDITION.
 HU1840'
 HU1840'REFERENCE MARK NO.1 IS LOCATED 184.88 FEET NE OF THE STATION ON
 HU1840'THE SW SIDE OF HIGHWAY 13, 6.4 METERS SW OF THE CENTER LINE, 6
 HU1840'METERS S OF A CROSS ROAD SIGN ON THE SW SIDE OF THE HIGHWAY.  THE
 HU1840'MARK IS A BRONZE DISK REFERENCE MARK, WITH THE ARROW POINTING
 HU1840'TOWARD THE STATION, STAMPED HOLT NO.1 1932, SET IN THE TOP OF A
 HU1840'12-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 2 INCHES ABOVE
 HU1840'THE SURFACE OF THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1840'
 HU1840'REFERENCE MARK NO.2 IS LOCATED 171.35 FEET SE OF THE STATION ON
 HU1840'THE NW SIDE OF HIGHWAY 13, 8.2 METERS NW OF THE CENTER LINE OF
 HU1840'HIGHWAY 13.  THE MARK IS A BRONZE DISK REFERENCE MARK, WITH THE
 HU1840'ARROW POINTING TOWARD THE STATION, STAMPED HOLT NO.2 1932, SET IN
 HU1840'THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT, WHICH EXTENDS 3
 HU1840'INCHES ABOVE THE GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1840'
 HU1840'REFERENCE MARK NO.3 (AZIMUTH MARK) IS LOCATED ABOUT 0.4 MILE SW
 HU1840'OF THE STATION AT THE NE EDGE OF A PINE LOT ON THE SW SIDE OF
 HU1840'HIGHWAY 13, 8.7 METERS SW OF THE CENTER LINE, AND 32.5 METERS S
 HU1840'OF A CULVERT, UNDER THE HIGHWAY.  THE MARK IS A BRONZE DISK
 HU1840'REFERENCE MARK, WITH THE ARROW POINTING TOWARD THE STATION,
 HU1840'STAMPED HOLT NO.3 1932, SET IN THE TOP OF A 12-INCH SQUARE
 HU1840'CONCRETE MONUMENT, WHICH EXTENDS 6 INCHES ABOVE THE SURFACE OF THE
 HU1840'GROUND.  THE MARK IS IN GOOD CONDITION.
 HU1840
 HU1840                          STATION RECOVERY (1942)
 HU1840
 HU1840'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU1840'STATION AND REFERENCE MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1840'CONDITION.  A DIFFERENCE WAS NOTED IN THE MEASUREMENT TO
 HU1840'REFERENCE MARK NO.1.  IT IS 184.85 FEET INSTEAD OF 184.88
 HU1840'FEET.  A COMPLETE NEW DESCRIPTION FOLLOWS--
 HU1840'
 HU1840'THE STATION (NOTE 1A AND 7A) IS LOCATED AT THE JUNCTION OF
 HU1840'U.S. HIGHWAYS 113 AND 13, 1 MILE SE OF THE POCOMOKE CITY POST
 HU1840'OFFICE AND WHERE HIGHWAY 13 MAKES A RIGHT ANGLE TURN.  IT IS AT
 HU1840'THE E CORNER OF A CULTIVATED FIELD OWNED BY JOHN BAYLISS, AT THE
 HU1840'W CORNER OF A GASOLINE STATION PROPERTY OWNED BY THE HOLT OIL
 HU1840'COMPANY (THIS IS DIRECTLY ACROSS HIGHWAY 13 FROM THE DRYDEN
 HU1840'MILLING COMPANY).  IT IS 97 FEET NW OF THE CENTER OF COMBINED
 HU1840'U.S. HIGHWAYS 113 AND 13, 203 FEET SW OF THE CENTER OF HIGHWAY
 HU1840'13 AND 124 FEET W OF THE SW CORNER OF A WOODEN ADDITION TO
 HU1840'THE GASOLINE STATION.  IT IS STAMPED HOLT 1932, PROJECTS 4
 HU1840'INCHES AND IS WITNESSED BY A 4-INCH SQUARE WHITE WOODEN POST
 HU1840'PROJECTING 2-1/2 FEET.
 HU1840'
 HU1840'REFERENCE MARK NO.1 (NOTE 11A) IS NE OF THE STATION, 20 FEET SW
 HU1840'OF THE CENTER OF HIGHWAY 13 AND 20 FEET S OF A STEEL HIGHWAY
 HU1840'DANGER SIGN.  IT IS STAMPED HOLT NO.1 1932 AND PROJECTS 6 INCHES.
 HU1840'
 HU1840'REFERENCE MARK NO.2 (NOTE 11A) IS SE OF THE STATION, 26 FEET NW
 HU1840'OF THE CENTER OF COMBINED HIGHWAYS 113 AND 13.  IT IS STAMPED
 HU1840'HOLT NO.2 1932 AND PROJECTS 6 INCHES.
 HU1840'
 HU1840'REFERENCE MARK NO.3 (NOTE 11A) (AZIMUTH MARK) IS 0.4 MILE SSW
 HU1840'OF THE STATION ON THE WSW SIDE OF COMBINED HIGHWAYS 113 AND 13.  IT
 HU1840'IS AT THE NE EDGE OF A PINE WOOD LOT, 30 FEET WSW OF THE CENTER
 HU1840'OF THE HIGHWAY AND 104 FEET S OF A CONCRETE CULVERT.  IT IS
 HU1840'STAMPED HOLT NO.3 1932 AND PROJECTS 6 INCHES.
 HU1840'
 HU1840'A 116-FOOT TOWER WILL SEE A 126-FOOT LIGHT AT NOBLE.
 HU1840'
 HU1840'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT BELL.
 HU1840'
 HU1840'A 90-FOOT TOWER WILL SEE A 126-FOOT LIGHT AT NASSAWANGO.
 HU1840'
 HU1840'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT LONG.
 HU1840'
 HU1840'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT KLEJ.
 HU1840'
 HU1840'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SMULLEN.
 HU1840'
 HU1840'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT MITCHELL.
 HU1840'
 HU1840'A 50-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT PARSON.
 HU1840
 HU1840                          STATION RECOVERY (1958)
 HU1840
 HU1840'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1840'STATION AND REFERENCE MARKS WERE NOT LOCATED.  THE STATION IF IT
 HU1840'IS THERE IS UNDER A 2 TO 3 FOOT FILL OF DIRT THAT WAS PUT IN WHEN
 HU1840'THE NEW SERVICE STATION WAS BUILT.  IT IS ASSUMED THAT THE
 HU1840'REFERENCE MARKS WERE KNOCKED OUT DURING THE CONSTRUCTION OF THE
 HU1840'SERVICE STATION AND BUTANE BOTTLE GAS PLANT.
 HU1840'
 HU1840'REFERENCE MARK NO. 3 (AZIMUTH MARK) WAS RECOVERED AS DESCRIBED
 HU1840'AND FOUND TO BE IN GOOD CONDITION.
 HU1840
 HU1840                          STATION RECOVERY (2012)
 HU1840
 HU1840'RECOVERY NOTE BY GEOCACHING 2012 (DPB)
 HU1840'MARK RECOVERED AS DESCRIBED AND ABOUT FIVE FEET WEST OF A POWER POLE
 HU1840'AT A WITNESS POST. MARK PROJECTS ABOUT ONE INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4594 ***********************************************************************
 JV4594  DESIGNATION -  HOLTER
 JV4594  PID         -  JV4594
 JV4594  STATE/COUNTY-  MD/FREDERICK
 JV4594  COUNTRY     -  US
 JV4594  USGS QUAD   -  FREDERICK (2016)
 JV4594
 JV4594                         *CURRENT SURVEY CONTROL
 JV4594  ______________________________________________________________________
 JV4594* NAD 83(1993) POSITION- 39 25 29.25859(N) 077 28 36.93147(W)   ADJUSTED
 JV4594* NAD 83(1993) ELLIP HT-   142.084 (meters)        (11/14/94)   ADJUSTED
 JV4594* NAVD 88 ORTHO HEIGHT -   174.5   (meters)      573.    (feet) VERTCON3
 JV4594  ______________________________________________________________________
 JV4594  GEOID HEIGHT    -        -32.835 (meters)                     GEOID18
 JV4594  NAD 83(1993) X  -  1,069,771.065 (meters)                     COMP
 JV4594  NAD 83(1993) Y  - -4,816,245.485 (meters)                     COMP
 JV4594  NAD 83(1993) Z  -  4,028,947.443 (meters)                     COMP
 JV4594  LAPLACE CORR    -          2.24  (seconds)                    DEFLEC18
 JV4594  HORZ ORDER      -  SECOND
 JV4594  ELLP ORDER      -  FOURTH    CLASS II
 JV4594
 JV4594.The horizontal coordinates were established by classical geodetic methods
 JV4594.and adjusted by the National Geodetic Survey in November 1994.
 JV4594
 JV4594.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4594.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4594
 JV4594.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4594.GEOID18 height accuracy estimate available here.
 JV4594
 JV4594.Click photographs - Photos may exist for this station.
 JV4594
 JV4594.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV4594
 JV4594.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4594
 JV4594.The ellipsoidal height was determined by GPS observations
 JV4594.and is referenced to NAD 83.
 JV4594
 JV4594. The following values were computed from the NAD 83(1993) position.
 JV4594
 JV4594;                    North         East     Units Scale Factor Converg.
 JV4594;SPC MD       -   195,272.474   358,934.205   MT  0.99999569   -0 17 57.6
 JV4594;SPC MD       -   640,656.44  1,177,603.30   sFT  0.99999569   -0 17 57.6
 JV4594;UTM  18      - 4,366,845.862   286,794.085   MT  1.00015971   -1 34 25.0
 JV4594
 JV4594!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4594!SPC MD       -   0.99997771  x   0.99999569  =   0.99997340
 JV4594!UTM  18      -   0.99997771  x   1.00015971  =   1.00013742
 JV4594
 JV4594:                Primary Azimuth Mark                     Grid Az
 JV4594:SPC MD       -  CAMP DETRICK SOUTH WATER TANK            076 24 32.6
 JV4594:UTM  18      -  CAMP DETRICK SOUTH WATER TANK            077 41 00.0
 JV4594
 JV4594_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8679466845(NAD 83)
 JV4594
 JV4594|---------------------------------------------------------------------|
 JV4594| PID    Reference Object                     Distance      Geod. Az  |
 JV4594|                                                           dddmmss.s |
 JV4594| JV4602 CAMP DETRICK NORTH WATER TANK       APPROX. 4.6 KM 0680036.9 |
 JV4594| JV4597 CAMP DETRICK SOUTH WATER TANK       APPROX. 4.3 KM 0760635.0 |
 JV4594| JV4598 FREDERICK MUNICIPAL TANK            APPROX. 6.1 KM 1052436.6 |
 JV4594| CK7493 HOLTER RM 2                          18.395 METERS 28301     |
 JV4594| CK7492 HOLTER RM 1                           9.302 METERS 34509     |
 JV4594|---------------------------------------------------------------------|
 JV4594
 JV4594                          SUPERSEDED SURVEY CONTROL
 JV4594
 JV4594  NAD 83(1991)-  39 25 29.25822(N)    077 28 36.93108(W) AD(       ) 2
 JV4594  ELLIP H (01/27/92)  142.078  (m)                       GP(       ) 4 1
 JV4594  NAD 83(1986)-  39 25 29.25806(N)    077 28 36.94204(W) AD(       ) 2
 JV4594  NAD 27      -  39 25 28.88760(N)    077 28 37.99890(W) AD(       ) 2
 JV4594  NGVD 29 (11/20/87)  174.7    (m)  UNKNOWN  model used  GPS OBS        
 JV4594
 JV4594.Superseded values are not recommended for survey control.
 JV4594
 JV4594.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4594.See file dsdata.pdf to determine how the superseded data were derived.
 JV4594
 JV4594_STAMPING: HOLTER 1958
 JV4594_MARK LOGO: CGS
 JV4594_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV4594+SATELLITE: SATELLITE OBSERVATIONS - January 17, 1986
 JV4594
 JV4594  HISTORY     - Date     Condition        Report By
 JV4594  HISTORY     - 1958     MONUMENTED       CGS
 JV4594  HISTORY     - 19860117 GOOD
 JV4594  HISTORY     - 20190616 MARK NOT FOUND   NGS
 JV4594
 JV4594                          STATION DESCRIPTION
 JV4594
 JV4594'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV4594'STATION IS LOCATED ON LONG EAST-WEST SLOPING RIDGE ABOUT 3.5
 JV4594'MILES WEST OF CENTER OF FREDERICK, AND ABOUT 0.05 MILE SOUTH OF
 JV4594'U.S. HIGHWAY NO. 40.  STATION IS 15 FEET NORTHEAST OF CONTOUR
 JV4594'TERRACE.  THE MARK IS SET IN A DRILL HOLE FLUSH IN OUTCROPPING
 JV4594'ROCK AND THE DISK IS STAMPED HOLTER 1958.
 JV4594'
 JV4594'R.M. NO.1 IS 40 FEET NORTHEAST OF CONTOUR TERRACE.  THE MARK IS
 JV4594'SET IN A DRILL HOLE ON ROCK WHICH PROJECTS ABOUT 3 INCHES AND THE
 JV4594'DISK IS STAMPED HOLTER NO 1 1958.
 JV4594'
 JV4594'R.M. NO. 2 IS 12 FEET EAST OF CONTOUR TERRACE.  THE MARK IS SET
 JV4594'IN A DRILL HOLE FLUSH ON OUTCROPPING ROCK AND THE DISK IS STAMPED
 JV4594'HOLTER NO 2 1958.
 JV4594'
 JV4594'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND U.S. ALT. 40
 JV4594'ABOUT 3 MILES WEST OF FREDERICK, TURN LEFT AND GO WESTERLY ON
 JV4594'U.S. ALT. 40 FOR 1.0 MILE TO A ROAD RIGHT, AT HOLTER MAIL BOX ON
 JV4594'RIGHT, TURN RIGHT ONTO SURFACED NARROW ROAD, AND GO NORTH FOR 0.25
 JV4594'MILE TO GATE ON RIGHT, TURN RIGHT THROUGH GATE INTO PASTURE AND
 JV4594'GO EAST-SOUTHEAST DOWN RIDGE (TOWARD A LARGE LONE TREE) FOR 0.2
 JV4594'MILE TO A CONTOUR TERRACE, TURN LEFT FOR 100 FEET TO STATION AS
 JV4594'DESCRIBED.
 JV4594'
 JV4594'STATION LITTLE HILL IS USED AS AZIMUTH MARK.
 JV4594'
 JV4594'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV4594
 JV4594                          STATION RECOVERY (1986)
 JV4594
 JV4594'RECOVERED 1986
 JV4594'RECOVERED IN GOOD CONDITION.
 JV4594
 JV4594                          STATION RECOVERY (2019)
 JV4594
 JV4594'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2019 (RWA)
 JV4594'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1237 ***********************************************************************
 HU1237  DESIGNATION -  HOMESTEAD AZ MK 2
 HU1237  PID         -  HU1237
 HU1237  STATE/COUNTY-  MD/WICOMICO
 HU1237  COUNTRY     -  US
 HU1237  USGS QUAD   -  EDEN (2016)
 HU1237
 HU1237                         *CURRENT SURVEY CONTROL
 HU1237  ______________________________________________________________________
 HU1237* NAD 83(1991) POSITION- 38 22 17.33972(N) 075 37 44.65983(W)   NO CHECK
 HU1237* NAVD 88 ORTHO HEIGHT -    10.843 (meters)       35.57  (feet) ADJUSTED
 HU1237  ______________________________________________________________________
 HU1237  GEOID HEIGHT    -        -35.788 (meters)                     GEOID18
 HU1237  LAPLACE CORR    -         -1.33  (seconds)                    DEFLEC18
 HU1237  DYNAMIC HEIGHT  -         10.837 (meters)       35.55  (feet) COMP
 HU1237  MODELED GRAVITY -    980,006.1   (mgal)                       NAVD 88
 HU1237
 HU1237  HORZ ORDER      -  THIRD
 HU1237  VERT ORDER      -  SECOND    CLASS I
 HU1237
 HU1237.The horizontal coordinates were established by classical geodetic methods
 HU1237.and adjusted by the National Geodetic Survey in January 1992.
 HU1237
 HU1237.No horizontal observational check was made to the station.
 HU1237
 HU1237.The orthometric height was determined by differential leveling and
 HU1237.adjusted by the NATIONAL GEODETIC SURVEY
 HU1237.in June 1991.
 HU1237
 HU1237.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1237.GEOID18 height accuracy estimate available here.
 HU1237
 HU1237.Click photographs - Photos may exist for this station.
 HU1237
 HU1237.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1237
 HU1237.The dynamic height is computed by dividing the NAVD 88
 HU1237.geopotential number by the normal gravity value computed on the
 HU1237.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1237.degrees latitude (g = 980.6199 gals.).
 HU1237
 HU1237.The modeled gravity was interpolated from observed gravity values.
 HU1237
 HU1237. The following values were computed from the NAD 83(1991) position.
 HU1237
 HU1237;                    North         East     Units Scale Factor Converg.
 HU1237;SPC MD       -    79,137.190   519,796.118   MT  0.99998833   +0 51 37.6
 HU1237;SPC MD       -   259,635.93  1,705,364.43   sFT  0.99998833   +0 51 37.6
 HU1237;UTM  18      - 4,247,220.431   445,048.659   MT  0.99963719   -0 23 25.8
 HU1237
 HU1237!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1237!SPC MD       -   1.00000391  x   0.99998833  =   0.99999224
 HU1237!UTM  18      -   1.00000391  x   0.99963719  =   0.99964110
 HU1237
 HU1237_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4504847220(NAD 83)
 HU1237
 HU1237                          SUPERSEDED SURVEY CONTROL
 HU1237
 HU1237  NAD 83(1986)-  38 22 17.33250(N)    075 37 44.68493(W) AD(       ) 3
 HU1237  NGVD 29 (11/18/05)   11.09   (m)           36.4    (f) RESET       3  
 HU1237  NGVD 29 (06/12/91)   11.098  (m)           36.41   (f) ADJUSTED    2 1
 HU1237  NGVD 29              11.09   (m)           36.4    (f) LEVELING    3  
 HU1237
 HU1237.Superseded values are not recommended for survey control.
 HU1237
 HU1237.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1237.See file dsdata.pdf to determine how the superseded data were derived.
 HU1237
 HU1237_MARKER: DZ = AZIMUTH MARK DISK
 HU1237_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1237_STAMPING: HOMESTEAD 1932 NO 2 1984
 HU1237_MARK LOGO: NGS
 HU1237_PROJECTION: FLUSH
 HU1237_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1237+STABILITY: SURFACE MOTION
 HU1237_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1237+SATELLITE: SATELLITE OBSERVATIONS - April 24, 2019
 HU1237
 HU1237  HISTORY     - Date     Condition        Report By
 HU1237  HISTORY     - 1984     MONUMENTED       NGS
 HU1237  HISTORY     - 19900124 GOOD             NGS
 HU1237  HISTORY     - 20050907 MARK NOT FOUND   GEOCAC
 HU1237  HISTORY     - 20081010 GOOD             MDSHA
 HU1237  HISTORY     - 20190424 GOOD             PROFLN
 HU1237
 HU1237                          STATION DESCRIPTION
 HU1237
 HU1237'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU1237'2.7 KM (1.70 MI) WEST FROM SALISBURY.
 HU1237'FROM THE POST OFFICE IN SALISBURY, GO WEST ON U.S. HIGHWAY 50 FOR 2.75
 HU1237'KM (1.70 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTHWEST ON
 HU1237'STATE HIGHWAY 349 FOR 1.3 KM (0.80 MI) TO THE MARK ON THE RIGHT IN
 HU1237'THE NORTH EDGE OF A GRASS COVERED TRAFFIC ISLAND WHICH IS FORMED BY
 HU1237'THE INTERSECTION OF STATE HIGHWAYS 349 AND 815, 11.3 M (37.1 FT)
 HU1237'SOUTH FROM THE CENTER OF STATE HIGHWAY 815, 30.5 M (100.1 FT) NORTH
 HU1237'FROM THE CENTER OF STATE HIGHWAY 815, 10.9 M (35.8 FT) EAST-SOUTHEAST
 HU1237'FROM A POWERLINE POLE NUMBERED 45999 93371 AND 10.7 M (35.1 FT)
 HU1237'EAST-SOUTHEAST FROM A CARSONITE WITNESS POST.
 HU1237'THE MARK IS 1.6 METERS  E FROM  A WITNESS POST
 HU1237'THE MARK IS ABOVE LEVEL WITH ROAD.
 HU1237
 HU1237                          STATION RECOVERY (1990)
 HU1237
 HU1237'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HU1237'1.4 KM (0.87 MI) WESTERLY ALONG STATE HIGHWAY 349 FROM THE JUNCTION
 HU1237'OF U.S. HIGHWAY 50 IN SALISBURY, ON THE EAST SIDE OF A TRIANGULAR
 HU1237'MEDIAN , 30.5 M (100.07 FT) NORTH OF THE CENTERLINE OF THE HIGHWAY,
 HU1237'11.3 M (37.07 FT) SOUTH OF THE CENTER OF THE NORTH LEG OF STATE
 HU1237'HIGHWAY 815, 10.9 M (35.76 FT) EAST-SOUTHEAST OF UTILITY POLE NUMBER
 HU1237'45999 93371, 7.9 M (25.92 FT) WEST-NORTHWEST OF THE SOUTH LEG OF
 HU1237'STATE HIGHWAY 815, 0.6 M (1.97 FT) BELOW THE LEVEL OF HIGHWAY 349,
 HU1237'AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE.
 HU1237
 HU1237                          STATION RECOVERY (2005)
 HU1237
 HU1237'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 HU1237'MARK NOT FOUND.
 HU1237
 HU1237                          STATION RECOVERY (2008)
 HU1237
 HU1237'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (MEW)
 HU1237'RECOVERED IN GOOD CONDITION.
 HU1237
 HU1237                          STATION RECOVERY (2019)
 HU1237
 HU1237'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2019 (JRO)
 HU1237'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2324 ***********************************************************************
 HU2324  DESIGNATION -  HOMESTEAD RESET
 HU2324  PID         -  HU2324
 HU2324  STATE/COUNTY-  MD/WICOMICO
 HU2324  COUNTRY     -  US
 HU2324  USGS QUAD   -  EDEN (2016)
 HU2324
 HU2324                         *CURRENT SURVEY CONTROL
 HU2324  ______________________________________________________________________
 HU2324* NAD 83(1991) POSITION- 38 22 09.49405(N) 075 38 09.70403(W)   ADJUSTED
 HU2324* NAVD 88 ORTHO HEIGHT -    10.661 (meters)       34.98  (feet) ADJUSTED
 HU2324  ______________________________________________________________________
 HU2324  GEOID HEIGHT    -        -35.787 (meters)                     GEOID18
 HU2324  LAPLACE CORR    -         -1.32  (seconds)                    DEFLEC18
 HU2324  DYNAMIC HEIGHT  -         10.654 (meters)       34.95  (feet) COMP
 HU2324  MODELED GRAVITY -    980,005.9   (mgal)                       NAVD 88
 HU2324
 HU2324  HORZ ORDER      -  SECOND
 HU2324  VERT ORDER      -  SECOND    CLASS I
 HU2324
 HU2324.The horizontal coordinates were established by classical geodetic methods
 HU2324.and adjusted by the National Geodetic Survey in January 1992.
 HU2324
 HU2324.The orthometric height was determined by differential leveling and
 HU2324.adjusted by the NATIONAL GEODETIC SURVEY
 HU2324.in June 1991.
 HU2324
 HU2324.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2324.GEOID18 height accuracy estimate available here.
 HU2324
 HU2324.Click photographs - Photos may exist for this station.
 HU2324
 HU2324.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2324
 HU2324.The dynamic height is computed by dividing the NAVD 88
 HU2324.geopotential number by the normal gravity value computed on the
 HU2324.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2324.degrees latitude (g = 980.6199 gals.).
 HU2324
 HU2324.The modeled gravity was interpolated from observed gravity values.
 HU2324
 HU2324. The following values were computed from the NAD 83(1991) position.
 HU2324
 HU2324;                    North         East     Units Scale Factor Converg.
 HU2324;SPC MD       -    78,886.198   519,191.877   MT  0.99998867   +0 51 21.9
 HU2324;SPC MD       -   258,812.47  1,703,382.02   sFT  0.99998867   +0 51 21.9
 HU2324;UTM  18      - 4,246,982.774   444,439.297   MT  0.99963802   -0 23 41.3
 HU2324
 HU2324!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2324!SPC MD       -   1.00000394  x   0.99998867  =   0.99999261
 HU2324!UTM  18      -   1.00000394  x   0.99963802  =   0.99964196
 HU2324
 HU2324:                Primary Azimuth Mark                     Grid Az
 HU2324:SPC MD       -  HOMESTEAD AZ MK 2                        067 26 34.1
 HU2324:UTM  18      -  HOMESTEAD AZ MK 2                        068 41 37.3
 HU2324
 HU2324_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4443946982(NAD 83)
 HU2324
 HU2324|---------------------------------------------------------------------|
 HU2324| PID    Reference Object                     Distance      Geod. Az  |
 HU2324|                                                           dddmmss.s |
 HU2324| HU1711 DELMAR STANDPIPE                    APPROX.11.5 KM 0270014.1 |
 HU2324| HU1242 SALISBURY WCPB TV MAST              APPROX. 4.3 KM 0652833.1 |
 HU2324| HU1237 HOMESTEAD AZ MK 2                   APPROX. 0.7 KM 0681756.0 |
 HU2324| HU1241 SALISBURY C P TEL TOWER             APPROX. 4.3 KM 0760149.3 |
 HU2324| HU1782 SALISBURY DISHAROON LUMBER STK      APPROX. 4.0 KM 0820407.6 |
 HU2324| HU1781 SALISBURY SUNSHINE LAUNDRY STK      APPROX. 3.9 KM 0864826.2 |
 HU2324| HU1754 SALISBURY CH STEEPLE LOW BALL       APPROX. 3.0 KM 0924727.2 |
 HU2324| HU1762 SALISBURY ASBURY ME CH SPIRE        APPROX. 3.1 KM 0931930.7 |
 HU2324| HU1776 SALISBURY WICOMICO PRESB CH         APPROX. 3.2 KM 0933751.3 |
 HU2324| HU1753 SALISBURY STANDPIPE                 APPROX. 3.0 KM 0934401.7 |
 HU2324| HU1774 SALISBURY CATH CH LOW STEEPLE       APPROX. 3.2 KM 0962104.9 |
 HU2324| HU1764 SALISBURY COURTHOUSE SPIRE          APPROX. 3.2 KM 0970102.2 |
 HU2324| HU1760 SALISBURY WICOMICO HOTEL FLAG       APPROX. 3.1 KM 0980022.6 |
 HU2324| HU1759 SALISBURY WICOMICO HOTEL COR        APPROX. 3.1 KM 0983436.6 |
 HU2324| HU1779 SALISBURY OLD HS BELFRY FLAG        APPROX. 3.4 KM 1010340.6 |
 HU2324| HU0536 HOMESTEAD RM 1                       27.987 METERS 10723     |
 HU2324| HU1778 SALISBURY JACKSONS FACTORY TK       APPROX. 3.5 KM 1090937.4 |
 HU2324| HU1770 SALISBURY NORMAL SCHOOL FLAG        APPROX. 3.4 KM 1321808.5 |
 HU2324| HU1756 SALISBURY ALLENS BARN SPIRE         APPROX. 3.9 KM 1372242.5 |
 HU2324| HU1765 FRUITLAND WATER TANK                APPROX. 5.4 KM 1625858.1 |
 HU2324| HU2653 HOMESTEAD RM 2                       21.249 METERS 17533     |
 HU2324| HU1793 SALISBURY GREENHOUSE STACK          APPROX. 3.4 KM 2162731.4 |
 HU2324| HU1789 SALISBURY HOMESTEAD DAIRY TANK      APPROX. 1.2 KM 2844918.2 |
 HU2324| HU0535 HOMESTEAD RM 3 AZIMUTH                             3401141.7 |
 HU2324|---------------------------------------------------------------------|
 HU2324
 HU2324                          SUPERSEDED SURVEY CONTROL
 HU2324
 HU2324  NAD 83(1986)-  38 22 09.48697(N)    075 38 09.72920(W) AD(       ) 2
 HU2324  NAD 27      -  38 22 09.07200(N)    075 38 10.98600(W) AD(       ) 2
 HU2324  NGVD 29 (11/18/05)   10.91   (m)           35.8    (f) RESET       3  
 HU2324  NGVD 29              10.92   (m)           35.8    (f) LEVELING    3  
 HU2324  NGVD 29 (06/12/91)   10.916  (m)           35.81   (f) ADJUSTED    2 1
 HU2324
 HU2324.Superseded values are not recommended for survey control.
 HU2324
 HU2324.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2324.See file dsdata.pdf to determine how the superseded data were derived.
 HU2324
 HU2324_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2324_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2324_STAMPING: HOMESTEAD 1932 1984
 HU2324_MARK LOGO: NGS
 HU2324_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2324_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2324+STABILITY: SURFACE MOTION
 HU2324_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2324+SATELLITE: SATELLITE OBSERVATIONS - February 05, 1990
 HU2324
 HU2324  HISTORY     - Date     Condition        Report By
 HU2324  HISTORY     - 1984     MONUMENTED       NGS
 HU2324  HISTORY     - 19900205 GOOD             NGS
 HU2324
 HU2324                          STATION DESCRIPTION
 HU2324
 HU2324'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 HU2324'1.8 KM (1.12 MI) WESTERLY ALONG STATE HIGHWAY 349 FROM THE JUNCTION
 HU2324'OF U.S. HIGHWAY 50 IN SALISBURY, THENCE 0.2 KM (0.12 MI) SOUTHERLY
 HU2324'ALONG CROCKETT LANE, 196.4 M (644.36 FT) SOUTHWEST OF UTILITY POLE
 HU2324'NUMBER 45858 92324, 195.5 M (641.40 FT) SOUTHWEST OF THE CENTER OF
 HU2324'CROCKETT LANE, 28.0 M (91.86 FT) NORTHWEST OF HOMESTEAD REFERENCE
 HU2324'MARK 1, 26.9 M (88.25 FT) NORTHWEST OF A 12-INCH TRIANGULAR BLAZED
 HU2324'TREE, 21.3 M (69.88 FT) NORTH OF HOMESTEAD REFERENCE MARK 2, 9.6 M
 HU2324'(31.50 FT) NORTH OF A WITNESS POST, 1.5 M (4.92 FT) ABOVE THE LEVEL
 HU2324'OF CROCKETT LANE, AND IN A CONCRETE MONUMENT THAT IS 0.6 M (1.97 FT)
 HU2324'BELOW THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0536 ***********************************************************************
 HU0536  DESIGNATION -  HOMESTEAD RM 1
 HU0536  PID         -  HU0536
 HU0536  STATE/COUNTY-  MD/WICOMICO
 HU0536  COUNTRY     -  US
 HU0536  USGS QUAD   -  EDEN (2016)
 HU0536
 HU0536                         *CURRENT SURVEY CONTROL
 HU0536  ______________________________________________________________________
 HU0536* NAD 83(1986) POSITION- 38 22 09.35   (N) 075 38 08.57   (W)   HD_HELD1
 HU0536* NAVD 88 ORTHO HEIGHT -    10.981 (meters)       36.03  (feet) POSTED
 HU0536  ______________________________________________________________________
 HU0536  GEOID HEIGHT    -        -35.787 (meters)                     GEOID18
 HU0536  DYNAMIC HEIGHT  -         10.97  (meters)       36.0   (feet) COMP
 HU0536  MODELED GRAVITY -    980,005.9   (mgal)                       NAVD 88
 HU0536
 HU0536  VERT ORDER      -  * POSTED, SEE BELOW
 HU0536
 HU0536.The horizontal coordinates were determined by differentially corrected
 HU0536.hand held GPS observations or other comparable positioning techniques
 HU0536.and have an estimated accuracy of +/- 3 meters.
 HU0536
 HU0536.The orthometric height was determined by differential leveling
 HU0536.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HU0536
 HU0536.* This is a POSTED BENCH MARK height.
 HU0536
 HU0536.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0536.GEOID18 height accuracy estimate available here.
 HU0536
 HU0536.Click photographs - Photos may exist for this station.
 HU0536
 HU0536.The dynamic height is computed by dividing the NAVD 88
 HU0536.geopotential number by the normal gravity value computed on the
 HU0536.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0536.degrees latitude (g = 980.6199 gals.).
 HU0536
 HU0536.The modeled gravity was interpolated from observed gravity values.
 HU0536
 HU0536;                    North         East    Units  Estimated Accuracy
 HU0536;SPC MD       -    78,882.2     519,219.5     MT  (+/- 3 meters HH1 GPS) 
 HU0536
 HU0536_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4446646978(NAD 83)
 HU0536
 HU0536                          SUPERSEDED SURVEY CONTROL
 HU0536
 HU0536  NGVD 29 (11/26/84)   11.224  (m)           36.82   (f) ADJUSTED    1 1
 HU0536
 HU0536.Superseded values are not recommended for survey control.
 HU0536
 HU0536.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0536.See file dsdata.pdf to determine how the superseded data were derived.
 HU0536
 HU0536_MARKER: DR = REFERENCE MARK DISK
 HU0536_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0536_STAMPING: HOMESTEAD 1932 NO 1
 HU0536_MARK LOGO: CGS
 HU0536_PROJECTION: FLUSH
 HU0536_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0536+STABILITY: SURFACE MOTION
 HU0536
 HU0536  HISTORY     - Date     Condition        Report By
 HU0536  HISTORY     - 1932     MONUMENTED       CGS
 HU0536  HISTORY     - 1963     GOOD             CGS
 HU0536  HISTORY     - 1984     GOOD             NGS
 HU0536
 HU0536                          STATION DESCRIPTION
 HU0536
 HU0536'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0536'1.4 MI W FROM SALISBURY.
 HU0536'1.2 MILES WEST ALONG STATE HIGHWAY 349 FROM THE JUNCTION OF U.S.
 HU0536'HIGHWAY 50 AT SALISBURY, THENCE 0.2 MILE SOUTH-SOUTHWEST CROSS-COUNTRY
 HU0536'TO THE EDGE OF THE WOODS, 17 FEET NORTHWEST OF A 12-INCH
 HU0536'HICKORY TREE, 18 FEET EAST OF A 20-INCH PINE TREE WITH A 1-FOOT
 HU0536'TRIANGULAR BLAZE, 1.5 FEET WEST OF A WHITE WOODEN WITNESS POST,
 HU0536'AND SET IN THE TOP OF A CONCRETE POST PROJECTING 1 INCH.
 HU0536
 HU0536                          STATION RECOVERY (1984)
 HU0536
 HU0536'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984
 HU0536'RECOVERED IN GOOD CONDITION.  A NEW DESCRIPTION AS FOLLOWS.  FROM THE
 HU0536'POST OFFICE IN SALISBURY, GO WEST ON U.S. HIGHWAY 50 FOR 2.75 KM
 HU0536'(1.70 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTHWEST ON STATE
 HU0536'HIGHWAY 349 FOR 1.75 KM (1.10 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND
 HU0536'GO SOUTHEAST ON CROCKETT LANE FOR 0.15 KM (0.10 MI) TO A FIELD ROAD
 HU0536'ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ALONG THE NORTHWEST EDGE
 HU0536'OF THE WOODED AREA FOR 0.2 KM (0.10 MI) TO THE MARK ON THE RIGHT IN
 HU0536'THE WOODED AREA, 125.6 M (412.1 FT) EAST-NORTHEAST FROM THE SOUTHWEST
 HU0536'CORNER OF THE WOODED AREA, 6.0 M (19.7 FT) SOUTHEAST FROM THE
 HU0536'NORTHWEST SIDE OF THE WOODED AREA AND 2.0 M (6.6 FT) NORTHEAST FROM A
 HU0536'12-INCH TRIANGULAR BLAZED OAK TREE.
 HU0536'THE MARK IS 0.4 METERS  N FROM  A WITNESS POST
 HU0536'THE MARK IS 0.3 M BELOW GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2653 ***********************************************************************
 HU2653  DESIGNATION -  HOMESTEAD RM 2
 HU2653  PID         -  HU2653
 HU2653  STATE/COUNTY-  MD/WICOMICO
 HU2653  COUNTRY     -  US
 HU2653  USGS QUAD   -  EDEN (2016)
 HU2653
 HU2653                         *CURRENT SURVEY CONTROL
 HU2653  ______________________________________________________________________
 HU2653* NAD 83(1986) POSITION- 38 22 08.81   (N) 075 38 09.64   (W)   HD_HELD1
 HU2653* NAVD 88 ORTHO HEIGHT -    11.14  (meters)       36.5   (feet) RESET
 HU2653  ______________________________________________________________________
 HU2653  GEOID HEIGHT    -        -35.787 (meters)                     GEOID18
 HU2653  VERT ORDER      -  THIRD
 HU2653
 HU2653.The horizontal coordinates were determined by differentially corrected
 HU2653.hand held GPS observations or other comparable positioning techniques
 HU2653.and have an estimated accuracy of +/- 3 meters.
 HU2653
 HU2653.The orthometric height was computed from unverified reset data.
 HU2653
 HU2653.No vertical observational check was made to the station.
 HU2653
 HU2653.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2653.GEOID18 height accuracy estimate available here.
 HU2653
 HU2653.Click photographs - Photos may exist for this station.
 HU2653
 HU2653;                    North         East    Units  Estimated Accuracy
 HU2653;SPC MD       -    78,865.1     519,193.7     MT  (+/- 3 meters HH1 GPS) 
 HU2653
 HU2653_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4444046961(NAD 83)
 HU2653
 HU2653                          SUPERSEDED SURVEY CONTROL
 HU2653
 HU2653  NGVD 29 (11/18/05)   11.38   (m)           37.3    (f) RESET       3  
 HU2653
 HU2653.Superseded values are not recommended for survey control.
 HU2653
 HU2653.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2653.See file dsdata.pdf to determine how the superseded data were derived.
 HU2653
 HU2653_MARKER: DR = REFERENCE MARK DISK
 HU2653_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2653_STAMPING: HOMESTEAD 1932 NO 2
 HU2653_MARK LOGO: CGS
 HU2653_PROJECTION: FLUSH
 HU2653_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2653+STABILITY: SURFACE MOTION
 HU2653
 HU2653  HISTORY     - Date     Condition        Report By
 HU2653  HISTORY     - 1932     MONUMENTED       CGS
 HU2653  HISTORY     - 1984     GOOD             NGS
 HU2653
 HU2653                          STATION DESCRIPTION
 HU2653
 HU2653'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2653'3.0 KM (1.85 MI) WEST FROM SALISBURY.
 HU2653'FROM THE POST OFFICE IN SALISBURY, GO WEST ON U.S. HIGHWAY 50 FOR 2.75
 HU2653'KM (1.70 MI) TO A SIDE ROAD LEFT.  TURN LEFT AND GO SOUTHWEST ON
 HU2653'STATE HIGHWAY 349 FOR 1.75 KM (1.10 MI) TO A SIDE ROAD LEFT.  TURN
 HU2653'LEFT AND GO SOUTHEAST ON CROCKETT LANE FOR 0.15 KM (0.10 MI) TO A
 HU2653'FIELD ROAD ON THE RIGHT.  TURN RIGHT AND GO SOUTHWEST ALONG THE
 HU2653'NORTHWEST EDGE OF A WOODED AREA FOR 0.2 KM (0.10 MI) TO THE MARK ON
 HU2653'THE LEFT IN THE WOODED AREA, 98.3 M (322.5 FT) NORTHEAST FROM THE
 HU2653'NORTHWEST CORNER OF THE WOODED AREA, 11.8 M (38.7 FT) SOUTHEAST FROM
 HU2653'THE SOUTHEAST SIDE OF THE WOODED AREA AND 26.2 M (86.0 FT) SOUTHWEST
 HU2653'FROM THE TRIANGULAR BLAZED TREE.
 HU2653'THE MARK IS 28.0 METERS  SW FROM  A WITNESS POST
 HU2653'THE MARK IS 0.3 M BELOW GROUND LEVEL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0535 ***********************************************************************
 HU0535  DESIGNATION -  HOMESTEAD RM 3 AZIMUTH
 HU0535  PID         -  HU0535
 HU0535  STATE/COUNTY-  MD/WICOMICO
 HU0535  COUNTRY     -  US
 HU0535  USGS QUAD   -  EDEN (2016)
 HU0535
 HU0535                         *CURRENT SURVEY CONTROL
 HU0535  ______________________________________________________________________
 HU0535* NAD 83(1986) POSITION- 38 22 09.     (N) 075 38 09.     (W)   SCALED
 HU0535* NAVD 88 ORTHO HEIGHT -    10.668 (meters)       35.00  (feet) POSTED
 HU0535  ______________________________________________________________________
 HU0535  GEOID HEIGHT    -        -35.787 (meters)                     GEOID18
 HU0535  DYNAMIC HEIGHT  -         10.66  (meters)       35.0   (feet) COMP
 HU0535  MODELED GRAVITY -    980,005.9   (mgal)                       NAVD 88
 HU0535
 HU0535  VERT ORDER      -  * POSTED, SEE BELOW
 HU0535
 HU0535.The horizontal coordinates were scaled from a map and have
 HU0535.an estimated accuracy of +/- 6 seconds.
 HU0535
 HU0535.The orthometric height was determined by differential leveling
 HU0535.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HU0535
 HU0535.* This is a POSTED BENCH MARK height.
 HU0535
 HU0535.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0535.GEOID18 height accuracy estimate available here.
 HU0535
 HU0535.Click photographs - Photos may exist for this station.
 HU0535
 HU0535.The dynamic height is computed by dividing the NAVD 88
 HU0535.geopotential number by the normal gravity value computed on the
 HU0535.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0535.degrees latitude (g = 980.6199 gals.).
 HU0535
 HU0535.The modeled gravity was interpolated from observed gravity values.
 HU0535
 HU0535;                    North         East    Units  Estimated Accuracy
 HU0535;SPC MD       -    78,870.      519,210.      MT  (+/- 180 meters Scaled)
 HU0535
 HU0535_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH444469(NAD 83)
 HU0535
 HU0535                          SUPERSEDED SURVEY CONTROL
 HU0535
 HU0535  NGVD 29 (11/26/84)   10.911  (m)           35.80   (f) ADJUSTED    1 1
 HU0535
 HU0535.Superseded values are not recommended for survey control.
 HU0535
 HU0535.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0535.See file dsdata.pdf to determine how the superseded data were derived.
 HU0535
 HU0535_MARKER: DR = REFERENCE MARK DISK
 HU0535_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0535_STAMPING: HOMESTEAD NO 3 1932
 HU0535_MARK LOGO: CGS
 HU0535_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0535_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0535+STABILITY: SURFACE MOTION
 HU0535
 HU0535  HISTORY     - Date     Condition        Report By
 HU0535  HISTORY     - 1932     MONUMENTED       CGS
 HU0535  HISTORY     - 1963     GOOD             CGS
 HU0535  HISTORY     - 19971018 MARK NOT FOUND   USPSQD
 HU0535
 HU0535                          STATION DESCRIPTION
 HU0535
 HU0535'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0535'1.4 MI W FROM SALISBURY.
 HU0535'1.2 MILES WEST ALONG STATE HIGHWAY 349 FROM THE JUNCTION OF U.S.
 HU0535'HIGHWAY 50 AT SALISBURY, THENCE 0.2 MILE NORTHWEST ALONG THE LEVIN
 HU0535'DASHIELL ROAD, 165 FEET EAST OF SOUTHEAST CORNER OF A TWO STORY
 HU0535'FRAME HOUSE, 14 FEET SOUTHWEST OF CENTER LINE OF ROAD, 46 1/2 FEET
 HU0535'WEST-NORTHWEST AND ACROSS ROAD FROM POWER POLE 8, 5 1/2 FEET
 HU0535'SOUTHEAST OF A TELEPHONE POLE, 2 FEET SOUTH-SOUTHWEST OF A WHITE
 HU0535'WOODEN WITNESS POST, 1 FOOT ABOVE LEVEL OF ROAD, AND SET IN THE
 HU0535'TOP OF A CONCRETE POST PROJECTING 3 INCHES.
 HU0535
 HU0535                          STATION RECOVERY (1997)
 HU0535
 HU0535'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0535'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5576 ***********************************************************************
 JV5576  DESIGNATION -  HOMINY
 JV5576  PID         -  JV5576
 JV5576  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5576  COUNTRY     -  US
 JV5576  USGS QUAD   -  BALTIMORE EAST (2016)
 JV5576
 JV5576                         *CURRENT SURVEY CONTROL
 JV5576  ______________________________________________________________________
 JV5576* NAD 83(1991) POSITION- 39 16 27.97968(N) 076 37 22.30323(W)   ADJUSTED
 JV5576* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5576  ______________________________________________________________________
 JV5576  GEOID HEIGHT    -        -32.724 (meters)                     GEOID18
 JV5576  LAPLACE CORR    -         -5.53  (seconds)                    DEFLEC18
 JV5576  HORZ ORDER      -  THIRD
 JV5576
 JV5576.The horizontal coordinates were established by classical geodetic methods
 JV5576.and adjusted by the National Geodetic Survey in January 1992.
 JV5576
 JV5576.The orthometric height was scaled from a topographic map.
 JV5576
 JV5576.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5576.GEOID18 height accuracy estimate available here.
 JV5576
 JV5576.Click photographs - Photos may exist for this station.
 JV5576
 JV5576.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5576
 JV5576. The following values were computed from the NAD 83(1991) position.
 JV5576
 JV5576;                    North         East     Units Scale Factor Converg.
 JV5576;SPC MD       -   178,539.921   432,542.588   MT  0.99997400   +0 14 12.1
 JV5576;SPC MD       -   585,759.72  1,419,100.14   sFT  0.99997400   +0 14 12.1
 JV5576;UTM  18      - 4,348,487.248   360,014.248   MT  0.99984128   -1 01 39.0
 JV5576
 JV5576!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5576!SPC MD       -   1.00000470  x   0.99997400  =   0.99997870
 JV5576!UTM  18      -   1.00000470  x   0.99984128  =   0.99984598
 JV5576
 JV5576:                Primary Azimuth Mark                     Grid Az
 JV5576:SPC MD       -  GAS USE 1915                             165 35 08.4
 JV5576:UTM  18      -  GAS USE 1915                             166 50 59.5
 JV5576
 JV5576_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6001448487(NAD 83)
 JV5576
 JV5576|---------------------------------------------------------------------|
 JV5576| PID    Reference Object                     Distance      Geod. Az  |
 JV5576|                                                           dddmmss.s |
 JV5576| CA9531 HOMINY RM                            23.260 METERS 04627     |
 JV5576| JV5585 GAS USE 1915                        APPROX. 1.1 KM 1654920.5 |
 JV5576| JV5580 REINLE SALMON CO TANK               242.436 METERS 32012     |
 JV5576|---------------------------------------------------------------------|
 JV5576
 JV5576                          SUPERSEDED SURVEY CONTROL
 JV5576
 JV5576  NAD 83(1986)-  39 16 27.97617(N)    076 37 22.31207(W) AD(       ) 3
 JV5576  NAD 27      -  39 16 27.59500(N)    076 37 23.42300(W) AD(       ) 3
 JV5576  USSD        -  39 16 27.96000(N)    076 37 23.26100(W) AD(       ) 3
 JV5576
 JV5576.Superseded values are not recommended for survey control.
 JV5576
 JV5576.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5576.See file dsdata.pdf to determine how the superseded data were derived.
 JV5576
 JV5576_MARKER: DD = SURVEY DISK
 JV5576_SETTING: 0 = UNSPECIFIED SETTING
 JV5576
 JV5576  HISTORY     - Date     Condition        Report By
 JV5576  HISTORY     - 1915     MONUMENTED       USACE
 JV5576  HISTORY     - 1934     MARK NOT FOUND   CGS
 JV5576  HISTORY     - 20010822 MARK NOT FOUND   USPSQD
 JV5576
 JV5576                          STATION DESCRIPTION
 JV5576
 JV5576'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1915 (EWE)
 JV5576'STATION IS AT THE HEAD OF MIDDLE BRANCH, PATAPSCO RIVER, NEAR
 JV5576'THE FOOT OF WARNER STREET, ON BALTIMORE AND OHIO RAILROAD
 JV5576'PROPERTY, ON GROUND WELL ABOVE HIGH WATER.  TO THE EASTWARD IS
 JV5576'A HOMINY MILL AND STILL FARTHER E ARE LARGE GAS TANKS.  TO THE
 JV5576'NORTHWARD IS A ROUNDHOUSE AND ALSO THE TRACKS OF THE BALTIMORE
 JV5576'AND OHIO AND ANNAPOLIS SHORT LINE RAILROADS.  THE SW CORNER OF
 JV5576'THE HOMINY FACTORY IS ON LINE WITH THE NORTHERN EDGE OF THE
 JV5576'LARGER OF TWO GAS TANKS.
 JV5576'
 JV5576'STATION MARKED BY A STANDARD STATION MARK SET IN CONCRETE
 JV5576'MONUMENT WITH TOP FLUSH WITH GROUND.  A STANDARD REFERENCE MARK
 JV5576'WAS SET FARTHER INSHORE WITH THE SW CORNER OF SWITCH AT WARNER
 JV5576'STREET ON RANGE WITH THE EASTERLY EDGE OF THE BALTIMORE AND OHIO
 JV5576'ELEVATOR.  IT IS 23.260 METERS (76.31 FEET) FROM THE STATION
 JV5576'N 46 DEG 28 MIN E.
 JV5576
 JV5576                          STATION RECOVERY (1934)
 JV5576
 JV5576'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JAB)
 JV5576'UNABLE TO LOCATE STATION.  INSUFFICIENT DESCRIPTION.  REFERENCES
 JV5576'GIVEN HAVE BEEN DESTROYED.
 JV5576
 JV5576                          STATION RECOVERY (2001)
 JV5576
 JV5576'RECOVERY NOTE BY US POWER SQUADRON 2001 (JKL)
 JV5576'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1579 ***********************************************************************
 JW1579  CBN         -  This is a Cooperative Base Network Control Station.
 JW1579  DESIGNATION -  HONI
 JW1579  PID         -  JW1579
 JW1579  STATE/COUNTY-  MD/GARRETT
 JW1579  COUNTRY     -  US
 JW1579  USGS QUAD   -  FROSTBURG (2016)
 JW1579
 JW1579                         *CURRENT SURVEY CONTROL
 JW1579  ______________________________________________________________________
 JW1579* NAD 83(2011) POSITION- 39 41 17.31625(N) 078 58 30.65163(W)   ADJUSTED
 JW1579* NAD 83(2011) ELLIP HT-   760.480 (meters)        (06/27/12)   ADJUSTED
 JW1579* NAD 83(2011) EPOCH   -  2010.00
 JW1579* NAVD 88 ORTHO HEIGHT -   792.360 (meters)     2599.60  (feet) ADJUSTED
 JW1579  ______________________________________________________________________
 JW1579  GEOID HEIGHT    -        -31.862 (meters)                     GEOID18
 JW1579  NAD 83(2011) X  -    940,007.396 (meters)                     COMP
 JW1579  NAD 83(2011) Y  - -4,824,759.746 (meters)                     COMP
 JW1579  NAD 83(2011) Z  -  4,051,885.765 (meters)                     COMP
 JW1579  LAPLACE CORR    -         -4.96  (seconds)                    DEFLEC18
 JW1579  DYNAMIC HEIGHT  -        791.833 (meters)     2597.87  (feet) COMP
 JW1579  MODELED GRAVITY -    979,934.1   (mgal)                       NAVD 88
 JW1579
 JW1579  VERT ORDER      -  SECOND    CLASS I
 JW1579
 JW1579  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1579  Standards:
 JW1579         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1579            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1579  -------------------------------------------------------------------
 JW1579  NETWORK    0.66   1.35           0.29   0.25   0.69      0.06401631
 JW1579  -------------------------------------------------------------------
 JW1579  Click here for local accuracies and other accuracy information.
 JW1579
 JW1579.The horizontal coordinates were established by GPS observations
 JW1579.and adjusted by the National Geodetic Survey in June 2012.
 JW1579
 JW1579.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1579.been affixed to the stable North American tectonic plate. See 
 JW1579.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1579
 JW1579.The horizontal coordinates are valid at the epoch date displayed above
 JW1579.which is a decimal equivalence of Year/Month/Day.
 JW1579
 JW1579.The orthometric height was determined by differential leveling and
 JW1579.adjusted by the NATIONAL GEODETIC SURVEY
 JW1579.in April 1995.
 JW1579
 JW1579.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1579.GEOID18 height accuracy estimate available here.
 JW1579
 JW1579.Click photographs - Photos may exist for this station.
 JW1579
 JW1579.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1579
 JW1579.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1579
 JW1579.The ellipsoidal height was determined by GPS observations
 JW1579.and is referenced to NAD 83.
 JW1579
 JW1579.The dynamic height is computed by dividing the NAVD 88
 JW1579.geopotential number by the normal gravity value computed on the
 JW1579.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1579.degrees latitude (g = 980.6199 gals.).
 JW1579
 JW1579.The modeled gravity was interpolated from observed gravity values.
 JW1579
 JW1579. The following values were computed from the NAD 83(2011) position.
 JW1579
 JW1579;                    North         East     Units Scale Factor Converg.
 JW1579;SPC MD       -   226,237.487   230,571.579   MT  1.00005035   -1 14 22.9
 JW1579;SPC MD       -   742,247.49    756,466.92   sFT  1.00005035   -1 14 22.9
 JW1579;UTM  17      - 4,395,104.815   673,628.376   MT  0.99997116   +1 17 36.2
 JW1579
 JW1579!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1579!SPC MD       -   0.99988071  x   1.00005035  =   0.99993105
 JW1579!UTM  17      -   0.99988071  x   0.99997116  =   0.99985187
 JW1579
 JW1579_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD7362895104(NAD 83)
 JW1579
 JW1579                          SUPERSEDED SURVEY CONTROL
 JW1579
 JW1579  NAD 83(2007)-  39 41 17.31647(N)    078 58 30.65230(W) AD(2002.00) 0
 JW1579  ELLIP H (02/10/07)  760.498  (m)                       GP(2002.00)    
 JW1579  ELLIP H (02/12/02)  760.514  (m)                       GP(       ) 4 1
 JW1579  NAD 83(1991)-  39 41 17.31652(N)    078 58 30.65201(W) AD(       ) B
 JW1579  ELLIP H (10/23/91)  760.446  (m)                       GP(       ) 4 1
 JW1579  NAVD 88             792.36   (m)         2599.6    (f) LEVELING    3  
 JW1579  NGVD 29             792.43   (m)         2599.8    (f) LEVELING    3  
 JW1579
 JW1579.Superseded values are not recommended for survey control.
 JW1579
 JW1579.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1579.See file dsdata.pdf to determine how the superseded data were derived.
 JW1579
 JW1579_MARKER: DH = HORIZONTAL CONTROL DISK
 JW1579_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1579_STAMPING: HONI 1990
 JW1579_MARK LOGO: NGS
 JW1579_PROJECTION: FLUSH
 JW1579_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1579+STABILITY: SURFACE MOTION
 JW1579_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1579+SATELLITE: SATELLITE OBSERVATIONS - April 11, 2016
 JW1579
 JW1579  HISTORY     - Date     Condition        Report By
 JW1579  HISTORY     - 1990     MONUMENTED       MDSHA
 JW1579  HISTORY     - 19920409 GOOD             MDSHA
 JW1579  HISTORY     - 19990901 GOOD             HGSERV
 JW1579  HISTORY     - 20000327 GOOD             MDSHA
 JW1579  HISTORY     - 20010503 GOOD             TWT
 JW1579  HISTORY     - 20011129 GOOD             JCLS
 JW1579  HISTORY     - 20110319 GOOD             MDLPP
 JW1579  HISTORY     - 20160411 GOOD             BASE9
 JW1579
 JW1579                          STATION DESCRIPTION
 JW1579
 JW1579'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1990 (JMA)
 JW1579'THE STATION IS LOCATED ABOUT 6.08 KM (3.78 MI) WEST OF FROSTBURG, AND
 JW1579'9.6 KM (6.0 MI) EAST OF GRANTSVILLE.  THE PROPERTY IS OWNED BY THE
 JW1579'MARYLAND STATE HIGHWAY ADMINISTRATION.
 JW1579'
 JW1579'TO REACH THE STATION FROM THE POST OFFICE IN FROSTBURG, AT THE
 JW1579'INTERSECTION OF STATE HIGHWAY 36 AND ALTERNATE 40.  GO WEST ON
 JW1579'ALTERNATE 40 FOR 6.08 KM (3.78 MI) TO THE STATION ON THE LEFT AT PINEY
 JW1579'RUN ROAD.
 JW1579'
 JW1579'THE STATION IS A STANDARD NGS DISK SET IN THE TOP OF A 0.27 M
 JW1579'(0.89 FT) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF
 JW1579'THE GROUND.  IT IS 36.58 M (120.01 FT) SOUTHWEST OF THE SOUTHERNMOST
 JW1579'OF TWO I-BEAM POSTS FOR A TRAFFIC SIGN (FINZEL,CUMBERLAND,MORGANTOWN),
 JW1579'21.88 M (71.78 FT) SOUTH OF THE CENTERLINE OF ALTERNATE 40, 33.83 M
 JW1579'(110.99 FT) SOUTHEAST OF THE CENTERLINE OF THE INTERSECTION OF
 JW1579'ALTERNATE 40 AND PINEY RUN ROAD, 33.83 M (110.99 FT) EAST OF THE
 JW1579'EASTERNMOST OF TWO I-BEAM POSTS FOR A TRAFFIC SIGN
 JW1579'(FINZEL,CUMBERLAND,MORGANTOWN), AND 25.45 M (83.50 FT) NORTHEAST OF
 JW1579'THE CENTERLINE OF THE INTERSECTION OF PINEY RUN ROAD AND THE ON RAMP
 JW1579'TO WESTBOUND U.S. 48.
 JW1579
 JW1579                          STATION RECOVERY (1992)
 JW1579
 JW1579'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JW1579'RECOVERED IN GOOD CONDITION.
 JW1579
 JW1579                          STATION RECOVERY (1999)
 JW1579
 JW1579'RECOVERY NOTE BY HAMILTON GEODETIC SERVICES 1999 (JVH)
 JW1579'RECOVERED AS DESCRIBED.
 JW1579
 JW1579                          STATION RECOVERY (2000)
 JW1579
 JW1579'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JW1579'RECOVERED AS DESCRIBED.
 JW1579
 JW1579                          STATION RECOVERY (2001)
 JW1579
 JW1579'RECOVERY NOTE BY TWT CONS ENG 2001 (DJR)
 JW1579'RECOVERED IN GOOD CONDITION.
 JW1579
 JW1579                          STATION RECOVERY (2001)
 JW1579
 JW1579'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2001
 JW1579'RECOVERED IN GOOD CONDITION.
 JW1579
 JW1579                          STATION RECOVERY (2011)
 JW1579
 JW1579'RECOVERY NOTE BY MASON DIXON LN PRES PART 2011 (PAS)
 JW1579'RECOVERED IN GOOD CONDITION.
 JW1579
 JW1579                          STATION RECOVERY (2016)
 JW1579
 JW1579'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2016 (DRD)
 JW1579'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5129 ***********************************************************************
 JV5129  DESIGNATION -  HOO
 JV5129  PID         -  JV5129
 JV5129  STATE/COUNTY-  MD/KENT
 JV5129  COUNTRY     -  US
 JV5129  USGS QUAD   -  ROCK HALL (2016)
 JV5129
 JV5129                         *CURRENT SURVEY CONTROL
 JV5129  ______________________________________________________________________
 JV5129* NAD 83(1991) POSITION- 39 08 12.89273(N) 076 08 30.84251(W)   ADJUSTED
 JV5129* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5129  ______________________________________________________________________
 JV5129  GEOID HEIGHT    -        -33.461 (meters)                     GEOID18
 JV5129  LAPLACE CORR    -         -2.14  (seconds)                    DEFLEC18
 JV5129  HORZ ORDER      -  THIRD
 JV5129
 JV5129.The horizontal coordinates were established by classical geodetic methods
 JV5129.and adjusted by the National Geodetic Survey in January 1992.
 JV5129
 JV5129.The orthometric height was scaled from a topographic map.
 JV5129
 JV5129.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5129.GEOID18 height accuracy estimate available here.
 JV5129
 JV5129.Click photographs - Photos may exist for this station.
 JV5129
 JV5129.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5129
 JV5129. The following values were computed from the NAD 83(1991) position.
 JV5129
 JV5129;                    North         East     Units Scale Factor Converg.
 JV5129;SPC MD       -   163,554.034   474,186.540   MT  0.99996020   +0 32 18.9
 JV5129;SPC MD       -   536,593.53  1,555,727.01   sFT  0.99996020   +0 32 18.9
 JV5129;UTM  18      - 4,332,591.096   401,310.319   MT  0.99971992   -0 43 14.9
 JV5129
 JV5129!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5129!SPC MD       -   1.00000529  x   0.99996020  =   0.99996549
 JV5129!UTM  18      -   1.00000529  x   0.99971992  =   0.99972521
 JV5129
 JV5129:                Primary Azimuth Mark                     Grid Az
 JV5129:SPC MD       -  CULT                                     216 47 49.6
 JV5129:UTM  18      -  CULT                                     218 03 23.4
 JV5129
 JV5129_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0131032591(NAD 83)
 JV5129
 JV5129|---------------------------------------------------------------------|
 JV5129| PID    Reference Object                     Distance      Geod. Az  |
 JV5129|                                                           dddmmss.s |
 JV5129| JV5130 IDE                                 403.389 METERS 0172134.7 |
 JV5129| JV5118 CULT                                APPROX. 0.7 KM 2172008.5 |
 JV5129| JV5127 NEST                                476.035 METERS 2511208.9 |
 JV5129| JV5120 WOLL                                391.026 METERS 30224     |
 JV5129|---------------------------------------------------------------------|
 JV5129
 JV5129                          SUPERSEDED SURVEY CONTROL
 JV5129
 JV5129  NAD 83(1986)-  39 08 12.88704(N)    076 08 30.85396(W) AD(       ) 3
 JV5129  NAD 27      -  39 08 12.49600(N)    076 08 32.03300(W) AD(       ) 3
 JV5129  USSD        -  39 08 12.90100(N)    076 08 31.84800(W) AD(       ) 3
 JV5129
 JV5129.Superseded values are not recommended for survey control.
 JV5129
 JV5129.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5129.See file dsdata.pdf to determine how the superseded data were derived.
 JV5129
 JV5129_MARKER: H = DRILL HOLE
 JV5129_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5129_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5129+STABILITY: SURFACE MOTION
 JV5129
 JV5129  HISTORY     - Date     Condition        Report By
 JV5129  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5129  HISTORY     - 1941     GOOD             CGS
 JV5129  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5129
 JV5129                          STATION DESCRIPTION
 JV5129
 JV5129'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5129'STATION IS ON THE EASTERN SHORE OF EAST FORK OF LANGFORD CREEK,
 JV5129'ABOUT 1-5/8 MILES NE OF MAIN BODY OF LANGFORD CREEK, 7/8 MILE N
 JV5129'OF HAW BUSH POINT, AND 3/8 MILE S OF ENTRANCE TO PHILIPS CREEK,
 JV5129'ON MARSHLAND, ABOUT 1 FOOT ABOVE HIGH WATER, 10 YARDS SE OF SHORE,
 JV5129'14 YARDS E OF SHORE, 20 YARDS N OF SHORE, AND IN FRONT OF WATER
 JV5129'BUSHES.
 JV5129'
 JV5129'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5129'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5129'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 7 INCHES.  THE
 JV5129'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5129'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5129'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5129'
 JV5129'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5129'FOLLOWS--N PEAK OF BARN, 3/4 MILE, S 60 DEG 43 MIN W.  S PEAK OF BARN,
 JV5129'3/8 MILE, N 67 DEG 46 MIN W. E PEAK OF BARN, 1-1/4 MILES, N 27 DEG
 JV5129'07 MIN W. S PEAK OF BARN, 2 MILES, N 07 DEG 35 MIN W. N PEAK OF
 JV5129'LARGE BARN, 1/4 MILE, S 11 DEG 39 MIN E. LEFT CORNER OF E CHIMNEY
 JV5129'OF BRICK HOUSE, 1/4 MILE, S 03 DEG 44 MIN E.
 JV5129
 JV5129                          STATION RECOVERY (1941)
 JV5129
 JV5129'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5129'STATION DUG OUT.  SUBSURFACE MARK RECOVERED.  POINT HAS WASHED
 JV5129'CONSIDERABLY AND DIMENSION TO HIGH-WATER LINE SHOULD BE CHANGED
 JV5129'TO READ AS FOLLOWS--5.2 METERS E OF HIGH-WATER LINE, 18.4 METERS
 JV5129'NE OF POINT, 24.1 METERS N OF HIGH-WATER LINE AND 33.0 METERS
 JV5129'FROM SQUARE BLAZE WITH NAILS SET IN TRIANGLE IN LARGE PIN OAK.
 JV5129
 JV5129                          STATION RECOVERY (1961)
 JV5129
 JV5129'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5129'STATION SURFACE MARK REPORTED DESTROYED IN 1941.  A SEARCH FOR
 JV5129'THE PIN OAK WITH NAILS AND BLAZED FAILED.  RECOMMEND THIS STATION
 JV5129'BE CLASSIFIED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5794 ***********************************************************************
 HV5794  DESIGNATION -  HOOD
 HV5794  PID         -  HV5794
 HV5794  STATE/COUNTY-  MD/QUEEN ANNES
 HV5794  COUNTRY     -  US
 HV5794  USGS QUAD   -  QUEENSTOWN (2016)
 HV5794
 HV5794                         *CURRENT SURVEY CONTROL
 HV5794  ______________________________________________________________________
 HV5794* NAD 83(1991) POSITION- 38 56 37.47348(N) 076 14 09.24654(W)   ADJUSTED
 HV5794* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5794  ______________________________________________________________________
 HV5794  GEOID HEIGHT    -        -33.843 (meters)                     GEOID18
 HV5794  LAPLACE CORR    -         -4.45  (seconds)                    DEFLEC18
 HV5794  HORZ ORDER      -  THIRD
 HV5794
 HV5794.The horizontal coordinates were established by classical geodetic methods
 HV5794.and adjusted by the National Geodetic Survey in January 1992.
 HV5794
 HV5794.The orthometric height was scaled from a topographic map.
 HV5794
 HV5794.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5794.GEOID18 height accuracy estimate available here.
 HV5794
 HV5794.Click photographs - Photos may exist for this station.
 HV5794
 HV5794.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5794
 HV5794. The following values were computed from the NAD 83(1991) position.
 HV5794
 HV5794;                    North         East     Units Scale Factor Converg.
 HV5794;SPC MD       -   142,038.322   466,239.412   MT  0.99995055   +0 28 46.5
 HV5794;SPC MD       -   466,004.06  1,529,653.80   sFT  0.99995055   +0 28 46.5
 HV5794;UTM  18      - 4,311,259.820   392,894.637   MT  0.99974126   -0 46 36.9
 HV5794
 HV5794!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5794!SPC MD       -   1.00000519  x   0.99995055  =   0.99995574
 HV5794!UTM  18      -   1.00000519  x   0.99974126  =   0.99974645
 HV5794
 HV5794:                Primary Azimuth Mark                     Grid Az
 HV5794:SPC MD       -  SHARP                                    243 17 06.5
 HV5794:UTM  18      -  SHARP                                    244 32 29.9
 HV5794
 HV5794_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9289411259(NAD 83)
 HV5794
 HV5794|---------------------------------------------------------------------|
 HV5794| PID    Reference Object                     Distance      Geod. Az  |
 HV5794|                                                           dddmmss.s |
 HV5794| HV6150 SHARP                               APPROX. 1.4 KM 2434553.0 |
 HV5794| HV5793 WRIGHTS HOUSE WEST CHIMNEY          APPROX. 3.1 KM 3462828.8 |
 HV5794|---------------------------------------------------------------------|
 HV5794
 HV5794                          SUPERSEDED SURVEY CONTROL
 HV5794
 HV5794  NAD 83(1986)-  38 56 37.46901(N)    076 14 09.25901(W) AD(       ) 3
 HV5794  NAD 27      -  38 56 37.04800(N)    076 14 10.42700(W) AD(       ) 3
 HV5794  USSD        -  38 56 37.44600(N)    076 14 10.21200(W) AD(       ) 3
 HV5794
 HV5794.Superseded values are not recommended for survey control.
 HV5794
 HV5794.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5794.See file dsdata.pdf to determine how the superseded data were derived.
 HV5794
 HV5794_MARKER: V = STONE MONUMENT
 HV5794_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5794
 HV5794  HISTORY     - Date     Condition        Report By
 HV5794  HISTORY     - 1899     MONUMENTED       CGS
 HV5794  HISTORY     - 20030423 MARK NOT FOUND   USPSQD
 HV5794
 HV5794                          STATION DESCRIPTION
 HV5794
 HV5794'DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (PAW)
 HV5794'STATION IS ON EASTERN SIDE OF PROSPECT BAY, IN NORTHERN PART OF
 HV5794'EASTERN BAY, ABOUT 1/4 MILE N OF EXTREME SOUTHERN END OF HOOD
 HV5794'POINT, AND ABOUT 30 FEET INSIDE HIGH-WATER MARK.  STATION IS
 HV5794'MARKED UNDERGROUND BY A BOTTLE PLACED ABOUT 37 INCHES BELOW
 HV5794'SURFACE OF GROUND.  ABOVE THE BOTTLE IS PLACED A GRANITE POST 40
 HV5794'INCHES LONG AND 12 INCHES SQUARE IN THE ROUGH, THE BOTTOM OF THE
 HV5794'POST IS 3 INCHES ABOVE THE TOP OF THE BOTTLE.  THE TOP OF THE
 HV5794'STONE IS DRESSED TO A 6-INCH CUBE AND IS MARKED WITH SQUARE CROSS
 HV5794'LINES AND THE LETTERS U.S.
 HV5794
 HV5794                          STATION RECOVERY (2003)
 HV5794
 HV5794'RECOVERY NOTE BY US POWER SQUADRON 2003 (JKW)
 HV5794'SEE NOAA CHART 12270, ED 31, 09-08-01. STATION PLOTS IN THE WATER
 HV5794'APPROXIMATELY 100 YARDS FROM EXISTING SHORELINE.  HOOD POINT HAS BEEN
 HV5794'SUBJECT TO SEVERE EROSION AND IS CURRENTLY PART OF THE CHESAPEAKE
 HV5794'ENVIRONMENTAL CENTER WETLANDS PARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5780 ***********************************************************************
 JV5780  DESIGNATION -  HOOF
 JV5780  PID         -  JV5780
 JV5780  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5780  COUNTRY     -  US
 JV5780  USGS QUAD   -  ROUND BAY (2016)
 JV5780
 JV5780                         *CURRENT SURVEY CONTROL
 JV5780  ______________________________________________________________________
 JV5780* NAD 83(1991) POSITION- 39 05 05.76326(N) 076 31 10.71256(W)   ADJUSTED
 JV5780* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5780  ______________________________________________________________________
 JV5780  GEOID HEIGHT    -        -33.136 (meters)                     GEOID18
 JV5780  LAPLACE CORR    -         -3.73  (seconds)                    DEFLEC18
 JV5780  HORZ ORDER      -  THIRD
 JV5780
 JV5780.The horizontal coordinates were established by classical geodetic methods
 JV5780.and adjusted by the National Geodetic Survey in January 1992.
 JV5780
 JV5780.The orthometric height was scaled from a topographic map.
 JV5780
 JV5780.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5780.GEOID18 height accuracy estimate available here.
 JV5780
 JV5780.Click photographs - Photos may exist for this station.
 JV5780
 JV5780.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5780
 JV5780. The following values were computed from the NAD 83(1991) position.
 JV5780
 JV5780;                    North         East     Units Scale Factor Converg.
 JV5780;SPC MD       -   157,544.204   441,559.859   MT  0.99995649   +0 18 05.4
 JV5780;SPC MD       -   516,876.28  1,448,684.30   sFT  0.99995649   +0 18 05.4
 JV5780;UTM  18      - 4,327,300.951   368,565.771   MT  0.99981271   -0 57 29.6
 JV5780
 JV5780!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5780!SPC MD       -   1.00000524  x   0.99995649  =   0.99996173
 JV5780!UTM  18      -   1.00000524  x   0.99981271  =   0.99981795
 JV5780
 JV5780:                Primary Azimuth Mark                     Grid Az
 JV5780:SPC MD       -  BANK                                     099 41 31.1
 JV5780:UTM  18      -  BANK                                     100 57 06.1
 JV5780
 JV5780_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6856527300(NAD 83)
 JV5780
 JV5780|---------------------------------------------------------------------|
 JV5780| PID    Reference Object                     Distance      Geod. Az  |
 JV5780|                                                           dddmmss.s |
 JV5780| JV5758 BANK                                APPROX. 0.8 KM 0995936.5 |
 JV5780| JV5778 HORN                                456.140 METERS 1523938.8 |
 JV5780|---------------------------------------------------------------------|
 JV5780
 JV5780                          SUPERSEDED SURVEY CONTROL
 JV5780
 JV5780  NAD 83(1986)-  39 05 05.75948(N)    076 31 10.72294(W) AD(       ) 3
 JV5780  NAD 27      -  39 05 05.31500(N)    076 31 11.75200(W) AD(       ) 3
 JV5780  USSD        -  39 05 05.70100(N)    076 31 11.67200(W) AD(       ) 3
 JV5780
 JV5780.Superseded values are not recommended for survey control.
 JV5780
 JV5780.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5780.See file dsdata.pdf to determine how the superseded data were derived.
 JV5780
 JV5780
 JV5780  HISTORY     - Date     Condition        Report By
 JV5780  HISTORY     - 1898     MONUMENTED       CGS
 JV5780  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5780
 JV5780                          STATION DESCRIPTION
 JV5780
 JV5780'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5780'MARYLAND TRIANGULATION DOES NOT GIVE ANY DESCRIPTION FOR THIS
 JV5780'STATION.  PHOTOSTAT OF SECTION OF TOPOGRAPHIC SHEET NO.2325 SHOWS
 JV5780'THIS STATION LOCATED ON THE N BANK OF THE MAGOTHY RIVER UPON THE
 JV5780'MOST SOUTHEASTERLY POINT OF LAND BETWEEN THE ENTRANCE TO COCKNEYS
 JV5780'CREEK AND THE ENTRANCE TO ROSS COVE.
 JV5780'
 JV5780'THE OWNER DOES NOT REMEMBER EVER SEEING EITHER STATION OR
 JV5780'ANY REFERENCES.  NO TRACE OF EITHER COULD BE FOUND.  POSITION OF
 JV5780'STATION PLOTS OUT IN THE RIVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5768 ***********************************************************************
 HV5768  DESIGNATION -  HOOK
 HV5768  PID         -  HV5768
 HV5768  STATE/COUNTY-  MD/QUEEN ANNES
 HV5768  COUNTRY     -  US
 HV5768  USGS QUAD   -  QUEENSTOWN (2016)
 HV5768
 HV5768                         *CURRENT SURVEY CONTROL
 HV5768  ______________________________________________________________________
 HV5768* NAD 83(1991) POSITION- 38 53 48.75531(N) 076 10 30.31806(W)   ADJUSTED
 HV5768* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5768  ______________________________________________________________________
 HV5768  GEOID HEIGHT    -        -34.151 (meters)                     GEOID18
 HV5768  LAPLACE CORR    -         -4.49  (seconds)                    DEFLEC18
 HV5768  HORZ ORDER      -  THIRD
 HV5768
 HV5768.The horizontal coordinates were established by classical geodetic methods
 HV5768.and adjusted by the National Geodetic Survey in January 1992.
 HV5768
 HV5768.The orthometric height was scaled from a topographic map.
 HV5768
 HV5768.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5768.GEOID18 height accuracy estimate available here.
 HV5768
 HV5768.Click photographs - Photos may exist for this station.
 HV5768
 HV5768.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5768
 HV5768. The following values were computed from the NAD 83(1991) position.
 HV5768
 HV5768;                    North         East     Units Scale Factor Converg.
 HV5768;SPC MD       -   136,881.879   471,558.184   MT  0.99994992   +0 31 03.9
 HV5768;SPC MD       -   449,086.63  1,547,103.81   sFT  0.99994992   +0 31 03.9
 HV5768;UTM  18      - 4,305,989.161   398,097.975   MT  0.99972787   -0 44 16.5
 HV5768
 HV5768!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5768!SPC MD       -   1.00000524  x   0.99994992  =   0.99995515
 HV5768!UTM  18      -   1.00000524  x   0.99972787  =   0.99973310
 HV5768
 HV5768:                Primary Azimuth Mark                     Grid Az
 HV5768:SPC MD       -  KNEE                                     014 32 55.7
 HV5768:UTM  18      -  KNEE                                     015 48 16.1
 HV5768
 HV5768_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9809705989(NAD 83)
 HV5768
 HV5768|---------------------------------------------------------------------|
 HV5768| PID    Reference Object                     Distance      Geod. Az  |
 HV5768|                                                           dddmmss.s |
 HV5768| HV5764 KNEE                                APPROX. 0.7 KM 0150359.6 |
 HV5768| HV5800 CHIN                                394.128 METERS 10022     |
 HV5768| HV5766 OWE                                 462.848 METERS 1722409.9 |
 HV5768|---------------------------------------------------------------------|
 HV5768
 HV5768                          SUPERSEDED SURVEY CONTROL
 HV5768
 HV5768  NAD 83(1986)-  38 53 48.75071(N)    076 10 30.33115(W) AD(       ) 3
 HV5768  NAD 27      -  38 53 48.32600(N)    076 10 31.50500(W) AD(       ) 3
 HV5768  USSD        -  38 53 48.72100(N)    076 10 31.27900(W) AD(       ) 3
 HV5768
 HV5768.Superseded values are not recommended for survey control.
 HV5768
 HV5768.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5768.See file dsdata.pdf to determine how the superseded data were derived.
 HV5768
 HV5768_MARKER: Z = SEE DESCRIPTION
 HV5768_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5768_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5768+STABILITY: SURFACE MOTION
 HV5768
 HV5768  HISTORY     - Date     Condition        Report By
 HV5768  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5768  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5768
 HV5768                          STATION DESCRIPTION
 HV5768
 HV5768'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5768'STATION IS ON THE WESTERN SHORE OF THE BRANCH OF WYE RIVER
 HV5768'BOUNDING WYE ISLAND ON THE W, ABOUT 3/4 MILE SW OF THE ENTRANCE TO
 HV5768'WYE NARROWS, AND 1/4 MILE S OF ENTRANCE TO A COVE, IN CULTIVATED
 HV5768'LAND, ABOUT 10 FEET ABOVE HIGH WATER, 3 YARDS W OF TOP OF BANK, 4
 HV5768'YARDS NE OF TOP OF BANK LINED WITH CEDARS, 7 YARDS NNW OF EXTREME
 HV5768'END OF POINT OF BANK AT LEFT OF CEDARS, AND N OF A LONG, LOW
 HV5768'PENINSULA THAT SEPARATES A SMALL POND FROM RIVER.  STATION IS
 HV5768'MARKED BY A HOLE IN THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5768'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV5768'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5768'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUBSURFACE MARK IS
 HV5768'CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES
 HV5768'BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO VARIOUS
 HV5768'POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN 4-INCH CEDAR
 HV5768'TREE, 6.99 METERS (22.93 FEET), S 10 DEG 28 MIN W.  NAIL IN BLAZE
 HV5768'IN 3-INCH CEDAR TREE, 4.94 METERS (16.21 FEET), S 66 DEG 41 MIN W.
 HV5768'NAIL IN BLAZE IN 8-INCH OAK TREE, 11.41 METERS (37.4 FEET), N 73
 HV5768'DEG 50 MIN W.  NEAR PEAK OF LARGE BARN, 2-1/4 MILES, N 20 DEG 5
 HV5768'MIN E. SPINDLE ON CUPOLA OF BARN, 1-1/8 MILES, N 48 DEG 18 MIN E.
 HV5768'LEFT CORNER OF LARGE CHIMNEY OF SMALL HOUSE, 7/8 MILE, S 55 DEG 4
 HV5768'MIN E.  LEFT PEAK OF HOUSE, 7/8 MILE, S 35 DEG 18 MIN E.  NEAR
 HV5768'PEAK OF LARGE BARN, 1-1/8 MILES, S 8 DEG 24 MIN E.  NEAR PEAK OF
 HV5768'LARGE BARN, 7/8 MILE, S 1 DEG 53 MIN E.
 HV5768
 HV5768                          STATION RECOVERY (1940)
 HV5768
 HV5768'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5768'STATION MARK SEARCHED FOR BUT NOT FOUND.  LOCAL RESIDENT STATES
 HV5768'THAT MARK WAS WASHED OUT DURING STORM IN 1934.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6124 ***********************************************************************
 HV6124  DESIGNATION -  HOOP
 HV6124  PID         -  HV6124
 HV6124  STATE/COUNTY-  MD/DORCHESTER
 HV6124  COUNTRY     -  US
 HV6124  USGS QUAD   -  HUDSON (2016)
 HV6124
 HV6124                         *CURRENT SURVEY CONTROL
 HV6124  ______________________________________________________________________
 HV6124* NAD 83(1991) POSITION- 38 30 18.68132(N) 076 17 07.43544(W)   ADJUSTED
 HV6124* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6124  ______________________________________________________________________
 HV6124  GEOID HEIGHT    -        -34.616 (meters)                     GEOID18
 HV6124  LAPLACE CORR    -         -5.11  (seconds)                    DEFLEC18
 HV6124  HORZ ORDER      -  THIRD
 HV6124
 HV6124.The horizontal coordinates were established by classical geodetic methods
 HV6124.and adjusted by the National Geodetic Survey in January 1992.
 HV6124
 HV6124.The orthometric height was scaled from a topographic map.
 HV6124
 HV6124.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6124.GEOID18 height accuracy estimate available here.
 HV6124
 HV6124.Click photographs - Photos may exist for this station.
 HV6124
 HV6124.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6124
 HV6124. The following values were computed from the NAD 83(1991) position.
 HV6124
 HV6124;                    North         East     Units Scale Factor Converg.
 HV6124;SPC MD       -    93,323.305   462,329.706   MT  0.99997064   +0 26 54.6
 HV6124;SPC MD       -   306,178.21  1,516,826.71   sFT  0.99997064   +0 26 54.6
 HV6124;UTM  18      - 4,262,652.026   387,921.870   MT  0.99975469   -0 48 01.3
 HV6124
 HV6124!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6124!SPC MD       -   1.00000547  x   0.99997064  =   0.99997611
 HV6124!UTM  18      -   1.00000547  x   0.99975469  =   0.99976016
 HV6124
 HV6124:                Primary Azimuth Mark                     Grid Az
 HV6124:SPC MD       -  HILL                                     339 43 47.9
 HV6124:UTM  18      -  HILL                                     340 58 43.8
 HV6124
 HV6124_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8792162652(NAD 83)
 HV6124
 HV6124|---------------------------------------------------------------------|
 HV6124| PID    Reference Object                     Distance      Geod. Az  |
 HV6124|                                                           dddmmss.s |
 HV6124| CX2898 HOOP RM                              15.598 METERS 19050     |
 HV6124| HV6123 REDE                                APPROX. 4.6 KM 2822814.7 |
 HV6124| HV6129 HILL                                APPROX. 7.2 KM 3401042.5 |
 HV6124|---------------------------------------------------------------------|
 HV6124
 HV6124                          SUPERSEDED SURVEY CONTROL
 HV6124
 HV6124  NAD 83(1986)-  38 30 18.67938(N)    076 17 07.45110(W) AD(       ) 3
 HV6124  NAD 27      -  38 30 18.25900(N)    076 17 08.62200(W) AD(       ) 3
 HV6124  USSD        -  38 30 18.63600(N)    076 17 08.40900(W) AD(       ) 3
 HV6124
 HV6124.Superseded values are not recommended for survey control.
 HV6124
 HV6124.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6124.See file dsdata.pdf to determine how the superseded data were derived.
 HV6124
 HV6124_MARKER: Z = SEE DESCRIPTION
 HV6124_SETTING: 0 = UNSPECIFIED SETTING
 HV6124
 HV6124  HISTORY     - Date     Condition        Report By
 HV6124  HISTORY     - 1908     MONUMENTED       CGS
 HV6124
 HV6124                          STATION DESCRIPTION
 HV6124
 HV6124'DESCRIBED BY COAST AND GEODETIC SURVEY 1908 (OWF)
 HV6124'ON HOOPER POINT, SOUTHERN SIDE OF LITTLE CHOPTANK RIVER, ON BANK
 HV6124'10 FEET ABOVE HIGH WATER AND ABOUT 175 METERS E BY S FROM THE
 HV6124'MOST NORTHERLY POINT OF LAND W OF THE WIDE MOUTH OF SLAUGHTER
 HV6124'CREEK.  STATION MARKED BY A 2- BY 4-INCH STAKE.  REFERENCE MARK
 HV6124'IS CENTER OF 4-INCH TILE PIPE 20 INCHES LONG, SET IN AND FILLED
 HV6124'WITH CEMENT AND PROJECTING A FEW INCHES ABOVE THE GROUND.  IT
 HV6124'IS 15.60 METERS (51.2 FEET) FROM STATION S 10 DEG 20 MIN W.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1296 ***********************************************************************
 JW1296  CBN         -  This is a Cooperative Base Network Control Station.
 JW1296  DESIGNATION -  HOOP
 JW1296  PID         -  JW1296
 JW1296  STATE/COUNTY-  MD/GARRETT
 JW1296  COUNTRY     -  US
 JW1296  USGS QUAD   -  DEER PARK (2016)
 JW1296
 JW1296                         *CURRENT SURVEY CONTROL
 JW1296  ______________________________________________________________________
 JW1296* NAD 83(2011) POSITION- 39 28 39.67128(N) 079 21 14.98172(W)   ADJUSTED
 JW1296* NAD 83(2011) ELLIP HT-   823.507 (meters)        (06/27/12)   ADJUSTED
 JW1296* NAD 83(2011) EPOCH   -  2010.00
 JW1296* NAVD 88 ORTHO HEIGHT -   854.681 (meters)     2804.07  (feet) ADJUSTED
 JW1296  ______________________________________________________________________
 JW1296  GEOID HEIGHT    -        -31.208 (meters)                     GEOID18
 JW1296  NAD 83(2011) X  -    910,833.743 (meters)                     COMP
 JW1296  NAD 83(2011) Y  - -4,845,553.967 (meters)                     COMP
 JW1296  NAD 83(2011) Z  -  4,033,915.191 (meters)                     COMP
 JW1296  LAPLACE CORR    -         -1.83  (seconds)                    DEFLEC18
 JW1296  DYNAMIC HEIGHT  -        854.108 (meters)     2802.19  (feet) COMP
 JW1296  MODELED GRAVITY -    979,925.6   (mgal)                       NAVD 88
 JW1296
 JW1296  VERT ORDER      -  SECOND    CLASS II
 JW1296
 JW1296  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1296  Standards:
 JW1296         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1296            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1296  -------------------------------------------------------------------
 JW1296  NETWORK    0.83   1.61           0.35   0.33   0.82      0.12460869
 JW1296  -------------------------------------------------------------------
 JW1296  Click here for local accuracies and other accuracy information.
 JW1296
 JW1296.The horizontal coordinates were established by GPS observations
 JW1296.and adjusted by the National Geodetic Survey in June 2012.
 JW1296
 JW1296.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1296.been affixed to the stable North American tectonic plate. See 
 JW1296.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1296
 JW1296.The horizontal coordinates are valid at the epoch date displayed above
 JW1296.which is a decimal equivalence of Year/Month/Day.
 JW1296
 JW1296.The orthometric height was determined by differential leveling and
 JW1296.adjusted by the NATIONAL GEODETIC SURVEY
 JW1296.in June 1991.
 JW1296
 JW1296.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1296.GEOID18 height accuracy estimate available here.
 JW1296
 JW1296.Click photographs - Photos may exist for this station.
 JW1296
 JW1296.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1296
 JW1296.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1296
 JW1296.The ellipsoidal height was determined by GPS observations
 JW1296.and is referenced to NAD 83.
 JW1296
 JW1296.The dynamic height is computed by dividing the NAVD 88
 JW1296.geopotential number by the normal gravity value computed on the
 JW1296.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1296.degrees latitude (g = 980.6199 gals.).
 JW1296
 JW1296.The modeled gravity was interpolated from observed gravity values.
 JW1296
 JW1296. The following values were computed from the NAD 83(2011) position.
 JW1296
 JW1296;                    North         East     Units Scale Factor Converg.
 JW1296;SPC MD       -   203,649.154   197,467.227   MT  1.00000496   -1 28 39.2
 JW1296;SPC MD       -   668,138.93    647,857.06   sFT  1.00000496   -1 28 39.2
 JW1296;UTM  17      - 4,371,080.956   641,556.574   MT  0.99984672   +1 02 47.6
 JW1296
 JW1296!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1296!SPC MD       -   0.99987082  x   1.00000496  =   0.99987578
 JW1296!UTM  17      -   0.99987082  x   0.99984672  =   0.99971756
 JW1296
 JW1296:                Primary Azimuth Mark                     Grid Az
 JW1296:SPC MD       -  HOOP AZ MK                               022 38 16.4
 JW1296:UTM  17      -  HOOP AZ MK                               020 06 49.6
 JW1296
 JW1296_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4155671080(NAD 83)
 JW1296
 JW1296|---------------------------------------------------------------------|
 JW1296| PID    Reference Object                     Distance      Geod. Az  |
 JW1296|                                                           dddmmss.s |
 JW1296| JW1571 HOOP AZ MK                                         0210937.2 |
 JW1296| JW1544 HOOP RM 1                             4.734 METERS 03210     |
 JW1296| JW1295 EAGLE ROCK LOT                      APPROX. 9.5 KM 1373422.8 |
 JW1296| JW1545 HOOP RM 2                             4.880 METERS 19842     |
 JW1296|---------------------------------------------------------------------|
 JW1296
 JW1296                          SUPERSEDED SURVEY CONTROL
 JW1296
 JW1296  NAD 83(2007)-  39 28 39.67146(N)    079 21 14.98247(W) AD(2002.00) 0
 JW1296  ELLIP H (02/10/07)  823.529  (m)                       GP(2002.00)    
 JW1296  ELLIP H (02/12/02)  823.525  (m)                       GP(       ) 4 1
 JW1296  NAD 83(1991)-  39 28 39.67176(N)    079 21 14.98268(W) AD(       ) B
 JW1296  ELLIP H (10/23/91)  823.484  (m)                       GP(       ) 4 1
 JW1296  NAD 83(1986)-  39 28 39.67957(N)    079 21 14.99319(W) AD(       ) 1
 JW1296  NAD 27      -  39 28 39.34765(N)    079 21 15.84974(W) AD(       ) 1
 JW1296  NAVD 88             854.68   (m)         2804.1    (f) LEVELING    3  
 JW1296  NGVD 29             854.82   (m)         2804.5    (f) LEVELING    3  
 JW1296
 JW1296.Superseded values are not recommended for survey control.
 JW1296
 JW1296.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1296.See file dsdata.pdf to determine how the superseded data were derived.
 JW1296
 JW1296_MARKER: DH = HORIZONTAL CONTROL DISK
 JW1296_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1296_STAMPING: HOOP 1975
 JW1296_MARK LOGO: NGS
 JW1296_PROJECTION: FLUSH
 JW1296_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1296_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1296+STABILITY: SURFACE MOTION
 JW1296_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1296+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2016
 JW1296
 JW1296  HISTORY     - Date     Condition        Report By
 JW1296  HISTORY     - 1975     MONUMENTED       NGS
 JW1296  HISTORY     - 1975     GOOD             NGS
 JW1296  HISTORY     - 19901002 GOOD             NGS
 JW1296  HISTORY     - 19901121 GOOD             NGS
 JW1296  HISTORY     - 20000327 GOOD             MDSHA
 JW1296  HISTORY     - 20090725 GOOD             GEOCAC
 JW1296  HISTORY     - 20160923 GOOD             GEOCAC
 JW1296
 JW1296                          STATION DESCRIPTION
 JW1296
 JW1296'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975 (JRS)
 JW1296'THE STATION IS ABOUT 5 MILES NORTHEAST OF OAKLAND, 2 MILES
 JW1296'SOUTHWEST OF THE SMALL COMMUNITY OF THAYERVILLE AND 1/2 MILE
 JW1296'NORTHEAST OF THE HIGHEST PORTION OF HOOP HILL.  IT IS ON THE
 JW1296'RIGHT-OF-WAY OF U.S. HIGHWAY 219, PERMISSION GRANTED BY MR.
 JW1296'LAWRENCE SKIPPER, MAINTENANCE SUPERVISOR, MARYLAND DEPARTMENT
 JW1296'OF HIGHWAYS, OAKLAND, MARYLAND.
 JW1296'
 JW1296'TO REACH THE STATION FROM THE COURTHOUSE IN OAKLAND, GO NORTH ON
 JW1296'U.S. HIGHWAY 219 FOR 3.3 MILES TO A SIDE ROAD REST AREA ON THE
 JW1296'LEFT. CONTINUE NORTH ON THE HIGHWAY FOR 2.4 MILES TO THE STATION
 JW1296'ON THE RIGHT.  TO REACH THE AZIMUTH MARK FROM THE STATION, GO
 JW1296'NORTH ON HIGHWAY 219 FOR 0.2 MILE TO THE MARK ON THE LEFT AT THE
 JW1296'NORTH SIDE OF THE SOUTH ENTRANCE TO THE OWL HOOT CAMP TEXACO
 JW1296'SERVICE STATION.
 JW1296'
 JW1296'STATION MARKS ARE STANDARD DISKS STAMPED---HOOP 1975---.  THE SURFACE
 JW1296'DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT
 JW1296'THAT IS FLUSH WITH THE GROUND.  IT IS 3.6 FEET WEST OF A FENCE,
 JW1296'3.6 FEET WEST-NORTHWEST OF A METAL WITNESS POST, 20.5 FEET
 JW1296'SOUTHWEST OF A POWERLINE POLE NUMBERED 3406 AND 38.0 FEET EAST
 JW1296'OF THE CENTERLINE OF HIGHWAY 219.  THE UNDERGROUND MARK IS SET
 JW1296'IN AN IRREGULAR MASS OF CONCRETE THAT IS 36 INCHES BELOW THE
 JW1296'GROUND SURFACE.
 JW1296'
 JW1296'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED---HOOP NO 1 1975---,
 JW1296'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 JW1296'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 1.1 FEET WEST OF THE
 JW1296'FENCE, 17.0 FEET NORTH OF THE WITNESS POST, 39.5 FEET EAST OF
 JW1296'THE CENTERLINE OF THE HIGHWAY AND ABOUT 1 FOOT LOWER THAN THE
 JW1296'STATION.
 JW1296'
 JW1296'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED---HOOP NO 2 1975---,
 JW1296'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 JW1296'PROJECTS 1 INCH ABOVE THE GROUND.  IT IS 1 FOOT WEST OF THE
 JW1296'FENCE, 1.7 FEET SOUTH-SOUTHWEST OF A CONCRETE RIGHT-OF-WAY POST,
 JW1296'14.5 FEET SOUTH OF THE WITNESS POST, 39.0 FEET EAST OF THE
 JW1296'CENTERLINE OF THE HIGHWAY AND ABOUT 1 FOOT HIGHER THAN THE
 JW1296'STATION.
 JW1296'
 JW1296'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED---HOOP AZ 1975---, SET
 JW1296'IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT IS
 JW1296'FLUSH WITH THE GROUND.  IT IS 1.2 FEET EAST OF A CURB, 1.9 FEET
 JW1296'SOUTHEAST OF THE NORTH END OF THE CURB AND 22.8 FEET WEST OF THE
 JW1296'CENTERLINE OF U.S. HIGHWAY 219.
 JW1296'
 JW1296'HEIGHT OF LIGHT ABOVE STATION MARK 1.4 METERS.
 JW1296
 JW1296                          STATION RECOVERY (1975)
 JW1296
 JW1296'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 JW1296'RECOVERED IN GOOD CONDITION.
 JW1296
 JW1296                          STATION RECOVERY (1990)
 JW1296
 JW1296'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW1296'9.3 KM (5.8 MI) NORTHWESTERLY ALONG U.S. HIGHWAY 219 FROM THE JUNCTION
 JW1296'OF STATE HIGHWAY 39 IN OAKLAND, 0.7 KM (0.4 MI) SOUTHWEST OF THE
 JW1296'INTERSECTION OF SAND FLAT ROAD, 11.1 M (36.4 FT) SOUTHEAST OF THE
 JW1296'HIGHWAY CENTERLINE, 4.9 M (16.1 FT) NORTHEAST OF REFERENCE MARK 2,
 JW1296'4.7 M (15.4 FT) SOUTHWEST OF REFERENCE MARK 1, 1.0 M (3.3 FT)
 JW1296'NORTHWEST OF A WITNESS POST AND FENCE, 0.6 M (2.0 FT) ABOVE THE LEVEL
 JW1296'OF THE HIGHWAY, AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
 JW1296
 JW1296                          STATION RECOVERY (1990)
 JW1296
 JW1296'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JW1296'STATION MARK RECOVERED IN GOOD CONDITION.  OTHER MARKS NOT SEARCHED
 JW1296'FOR.
 JW1296'STATION IS LOCATED ABOUT 8.0 KM (5.0 MI) NORTHEAST OF OAKLAND, 3.2 KM
 JW1296'(2.0 MI) SOUTHWEST OF THE SMALL COMMUNITY OF THAYERVILLE,
 JW1296'APPROXIMATELY 0.8 KM (0.5 MI) NORTHEAST OF THE HIGHEST PORTION HOOP
 JW1296'HILL, AND ON HIGHWAY RIGHT-OF-WAY.  OWNERSHIP--MARYLAND DEPARTMENT OF
 JW1296'HIGHWAYS. CONTACT MR. LAWRENCE SKIPPER, MAINTENANCE SUPERVISOR,
 JW1296'MARYLAND DEPARTMENT OF HIGHWAYS, OAKLAND, MARYLAND.
 JW1296'TO REACH STATION FROM THE COURTHOUSE IN OAKLAND, GO NORTH ON U.S.
 JW1296'HIGHWAY 219 FOR 5.3 KM (3.3 MI) TO AN ENTRANCE ROAD LEFT, LEADING TO
 JW1296'A REST AREA.  CONTINUE NORTH ON HIGHWAY 219 FOR 3.9 KM (2.4 MI) TO
 JW1296'THE STATION ON THE RIGHT.
 JW1296'STATION MARK IS SET IN THE TOP OF A 30-CM ROUND CONCRETE POST FLUSH
 JW1296'WITH THE GROUND.  IT IS 11.6 M (38.1 FT) EAST FROM THE CENTER OF
 JW1296'HIGHWAY 219, 6.3 M (20.7 FT) SOUTHWEST FROM POWERLINE POLE NUMBER
 JW1296'3406, 1.1 M (3.6 FT) WEST FROM A FENCE, AND 1.1 M (3.6 FT)
 JW1296'WEST-NORTHWEST FROM A METAL WITNESS POST.
 JW1296'NOTE--THE ORIGINAL DESCRIPTION STATES THAT THERE IS AN UNDERGROUND
 JW1296'MARK AT THIS STATION.
 JW1296
 JW1296                          STATION RECOVERY (2000)
 JW1296
 JW1296'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JW1296'RECOVERED AS DESCRIBED.
 JW1296
 JW1296                          STATION RECOVERY (2009)
 JW1296
 JW1296'RECOVERY NOTE BY GEOCACHING 2009 (BP)
 JW1296'THE METAL WITNESS SIGN IS STILL IN PLACE ON THE FENCE LINE.
 JW1296
 JW1296                          STATION RECOVERY (2016)
 JW1296
 JW1296'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW1296'THE STATION MARK AND REFERENCE MARKS 1 AND 2 WERE ALL RECOVERED IN
 JW1296'GOOD CONDITION.  THE AZIMUTH MARK WAS SEARCHED FOR AND NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3181 ***********************************************************************
 DI3181  DESIGNATION -  HOOP 1
 DI3181  PID         -  DI3181
 DI3181  STATE/COUNTY-  MD/DORCHESTER
 DI3181  COUNTRY     -  US
 DI3181  USGS QUAD   -  HONGA (2016)
 DI3181
 DI3181                         *CURRENT SURVEY CONTROL
 DI3181  ______________________________________________________________________
 DI3181* NAD 83(2011) POSITION- 38 16 19.06821(N) 076 11 06.07308(W)   ADJUSTED
 DI3181* NAD 83(2011) ELLIP HT-   -34.904 (meters)        (06/27/12)   ADJUSTED
 DI3181* NAD 83(2011) EPOCH   -  2010.00
 DI3181* NAVD 88 ORTHO HEIGHT -     0.4   (meters)        1.    (feet) GPS OBS
 DI3181  ______________________________________________________________________
 DI3181  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3181  GEOID HEIGHT    -        -35.298 (meters)                     GEOID03
 DI3181  GEOID HEIGHT    -        -35.338 (meters)                     GEOID18
 DI3181  NAD 83(2011) X  -  1,197,222.486 (meters)                     COMP
 DI3181  NAD 83(2011) Y  - -4,868,721.502 (meters)                     COMP
 DI3181  NAD 83(2011) Z  -  3,929,166.366 (meters)                     COMP
 DI3181  LAPLACE CORR    -         -3.98  (seconds)                    DEFLEC18
 DI3181
 DI3181  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3181  Standards:
 DI3181         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3181            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3181  -------------------------------------------------------------------
 DI3181  NETWORK    1.16   1.59           0.54   0.38   0.81     -0.02951286
 DI3181  -------------------------------------------------------------------
 DI3181  Click here for local accuracies and other accuracy information.
 DI3181
 DI3181.The horizontal coordinates were established by GPS observations
 DI3181.and adjusted by the National Geodetic Survey in June 2012.
 DI3181
 DI3181.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3181.been affixed to the stable North American tectonic plate. See 
 DI3181.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3181
 DI3181.The horizontal coordinates are valid at the epoch date displayed above
 DI3181.which is a decimal equivalence of Year/Month/Day.
 DI3181
 DI3181.The orthometric height was determined by GPS observations and a
 DI3181.high-resolution geoid model.
 DI3181
 DI3181.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3181.GEOID18 height accuracy estimate available here.
 DI3181
 DI3181.Click photographs - Photos may exist for this station.
 DI3181
 DI3181.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3181
 DI3181.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3181
 DI3181.The ellipsoidal height was determined by GPS observations
 DI3181.and is referenced to NAD 83.
 DI3181
 DI3181. The following values were computed from the NAD 83(2011) position.
 DI3181
 DI3181;                    North         East     Units Scale Factor Converg.
 DI3181;SPC MD       -    67,509.070   471,315.920   MT  1.00000500   +0 30 41.4
 DI3181;SPC MD       -   221,486.01  1,546,308.98   sFT  1.00000500   +0 30 41.4
 DI3181;UTM  18      - 4,236,654.639   396,342.050   MT  0.99973233   -0 44 02.6
 DI3181
 DI3181!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3181!SPC MD       -   1.00000548  x   1.00000500  =   1.00001048
 DI3181!UTM  18      -   1.00000548  x   0.99973233  =   0.99973781
 DI3181
 DI3181_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9634236654(NAD 83)
 DI3181
 DI3181|---------------------------------------------------------------------|
 DI3181| PID    Reference Object                     Distance      Geod. Az  |
 DI3181|                                                           dddmmss.s |
 DI3181| DI3182 HOOP 2                              335.279 METERS 14708     |
 DI3181|---------------------------------------------------------------------|
 DI3181
 DI3181                          SUPERSEDED SURVEY CONTROL
 DI3181
 DI3181  NAD 83(1991)-  38 16 19.06842(N)    076 11 06.07390(W) AD(       ) 1
 DI3181  ELLIP H (01/05/07)  -34.875  (m)                       GP(       ) 4 2
 DI3181
 DI3181.Superseded values are not recommended for survey control.
 DI3181
 DI3181.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3181.See file dsdata.pdf to determine how the superseded data were derived.
 DI3181
 DI3181_MARKER: DD = SURVEY DISK
 DI3181_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3181_STAMPING: HOOP 1 2006
 DI3181_MARK LOGO: MD-019
 DI3181_PROJECTION: RECESSED 8 CENTIMETERS
 DI3181_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3181_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3181+STABILITY: SURFACE MOTION
 DI3181_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3181+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2014
 DI3181
 DI3181  HISTORY     - Date     Condition        Report By
 DI3181  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3181  HISTORY     - 20140320 GOOD             ARCSHE
 DI3181
 DI3181                          STATION DESCRIPTION
 DI3181
 DI3181'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3181'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR FISHING
 DI3181'CREEK, MARYLAND.   IT IS ABOUT 20.8 MI (33.5 KM) SOUTHWEST OF
 DI3181'CAMBRIDGE, MARYLAND, ABOUT 35.4 MI (57.0 KM)  SOUTHWEST OF EASTON,
 DI3181'MARYLAND AND ABOUT 32.5 MI (52.3 KM) SOUTHWEST OF SALISBURY,
 DI3181'MARYLAND.
 DI3181'
 DI3181'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3181'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHWEST ON US RTE 50 FOR 2.6 MI
 DI3181'(4.2 KM) TO INTERSECTION WITH SR  16 (CHURCH CREEK ROAD/ CAMBRIDGE
 DI3181'BYPASS).  TURN LEFT AND PROCEED 7.3 MI (11.7 KM)  SOUTHWEST TO
 DI3181'INTERSECTION WITH SR 335 (CHURCH CREEK- GOLDEN HILL ROAD).  TURN LEFT
 DI3181'AND  PROCEED SOUTHWEST 9.8 MI (15.8. KM) TO INTERSECTION WITH SR 336
 DI3181'(CRAPO ROAD).  TURN RIGHT  TO REMAIN ON SR 335 (HOOPERS ISLAND ROAD)
 DI3181'AND PROCEED 8.3 MI (13.3 KM) SOUTHWEST TO  INTERSECTION WITH OLD HOUSE
 DI3181'POINT ROAD.  TURN RIGHT TO REMAIN ON HOOPERS ISLAND ROAD/
 DI3181'HOOPERSVILLE ROAD AND PROCEED 5.3 MI (8.5 KM) SOUTHWEST TO THE STATION
 DI3181'ON THE LEFT.
 DI3181'
 DI3181'STATION IS 6.5 FT (2.0 M) NORTHEAST OF THE NORTHEAST EDGE OF
 DI3181'HOOPERSVILLE ROAD, 70.5 FT  (21.5 M) NORTHWEST OF UTILITY POLE
 DI3181'CHOPTANK 513-273 AND 1100.0 FT (335.3 M) NORTH DRIVEWAY  TO HOUSE
 DI3181'1921.  A 3 IN BRASS DISK STAMPED HOOP 1 SET IN THE TOP OF A 1 FT (0.3
 DI3181'M) CONCRETE  MONUMENT RECESSED 0.20 FT BELOW THE GROUND.
 DI3181
 DI3181                          STATION RECOVERY (2014)
 DI3181
 DI3181'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 DI3181'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6131 ***********************************************************************
 HV6131  DESIGNATION -  HOOP 2
 HV6131  PID         -  HV6131
 HV6131  STATE/COUNTY-  MD/DORCHESTER
 HV6131  COUNTRY     -  US
 HV6131  USGS QUAD   -  HUDSON (2016)
 HV6131
 HV6131                         *CURRENT SURVEY CONTROL
 HV6131  ______________________________________________________________________
 HV6131* NAD 83(1991) POSITION- 38 30 15.25854(N) 076 17 09.33151(W)   ADJUSTED
 HV6131* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6131  ______________________________________________________________________
 HV6131  GEOID HEIGHT    -        -34.615 (meters)                     GEOID18
 HV6131  LAPLACE CORR    -         -5.11  (seconds)                    DEFLEC18
 HV6131  HORZ ORDER      -  SECOND
 HV6131
 HV6131.The horizontal coordinates were established by classical geodetic methods
 HV6131.and adjusted by the National Geodetic Survey in January 1992.
 HV6131
 HV6131.The orthometric height was scaled from a topographic map.
 HV6131
 HV6131.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6131.GEOID18 height accuracy estimate available here.
 HV6131
 HV6131.Click photographs - Photos may exist for this station.
 HV6131
 HV6131.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6131
 HV6131. The following values were computed from the NAD 83(1991) position.
 HV6131
 HV6131;                    North         East     Units Scale Factor Converg.
 HV6131;SPC MD       -    93,217.410   462,284.593   MT  0.99997075   +0 26 53.4
 HV6131;SPC MD       -   305,830.79  1,516,678.70   sFT  0.99997075   +0 26 53.4
 HV6131;UTM  18      - 4,262,547.163   387,874.470   MT  0.99975482   -0 48 02.4
 HV6131
 HV6131!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6131!SPC MD       -   1.00000531  x   0.99997075  =   0.99997606
 HV6131!UTM  18      -   1.00000531  x   0.99975482  =   0.99976013
 HV6131
 HV6131:                Primary Azimuth Mark                     Grid Az
 HV6131:SPC MD       -  HOOP 2 RM 3                              234 06 23.6
 HV6131:UTM  18      -  HOOP 2 RM 3                              235 21 19.4
 HV6131
 HV6131_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8787462547(NAD 83)
 HV6131
 HV6131|---------------------------------------------------------------------|
 HV6131| PID    Reference Object                     Distance      Geod. Az  |
 HV6131|                                                           dddmmss.s |
 HV6131| CX2899 HOOP 2 RM 1                          18.044 METERS 09909     |
 HV6131| CX2900 HOOP 2 RM 2                          42.346 METERS 18313     |
 HV6131| CX2901 HOOP 2 RM 3                                        2343317.0 |
 HV6131| HV6119 JAMES 2 1934                        APPROX. 5.0 KM 3032850.1 |
 HV6131|---------------------------------------------------------------------|
 HV6131
 HV6131                          SUPERSEDED SURVEY CONTROL
 HV6131
 HV6131  NAD 83(1986)-  38 30 15.25671(N)    076 17 09.34714(W) AD(       ) 2
 HV6131  NAD 27      -  38 30 14.81800(N)    076 17 10.54400(W) AD(       ) 2
 HV6131
 HV6131.Superseded values are not recommended for survey control.
 HV6131
 HV6131.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6131.See file dsdata.pdf to determine how the superseded data were derived.
 HV6131
 HV6131_MARKER: DS = TRIANGULATION STATION DISK
 HV6131_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6131_STAMPING: HOOP 2 1934
 HV6131_MARK LOGO: CGS
 HV6131_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6131+STABILITY: SURFACE MOTION
 HV6131
 HV6131  HISTORY     - Date     Condition        Report By
 HV6131  HISTORY     - 1934     MONUMENTED       CGS
 HV6131  HISTORY     - 1942     GOOD             CGS
 HV6131  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV6131
 HV6131                          STATION DESCRIPTION
 HV6131
 HV6131'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV6131'THIS SECOND-ORDER STATION IS LOCATED ON THE S SIDE OF THE
 HV6131'LITTLE CHOPTANK RIVER, AT THE MOUTH OF SLAUGHTER CREEK, ON
 HV6131'PROPERTY OWNED BY THE HOOPERS POINT GUN CLUB.  ON THE EXTREME
 HV6131'NORTHERLY PART OF TAYLORS ISLAND (HOOPERS POINT) ABOUT 0.5 MILE
 HV6131'E OF THE HOOPERS POINT CLUBHOUSE.  68 FEET S OF THE WATERS EDGE
 HV6131'WHICH IS A 5-FOOT BANK AT THIS POINT.  140 FEET NW OF THE NW
 HV6131'CORNER OF A VERY OLD DILAPIDATED GRAVEYARD APPROXIMATELY
 HV6131'50 BY 50 FEET.  MARK PROJECTS 6 INCHES ABOVE GROUND.
 HV6131'
 HV6131'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV6131'DISKS SET IN CONCRETE.
 HV6131'
 HV6131'REFERENCE MARK NO.1 IS 59.20 FEET NE OF THE STATION 21 PACES
 HV6131'S OF THE BANK AND PROJECTS 6 INCHES ABOVE THE GROUND.  REFERENCE
 HV6131'MARK NO.2 IS 138.93 FEET SE OF THE STATION.  3 FEET N OF THE N
 HV6131'FENCE OF THE OLD GRAVEYARD AND 1.5 FEET E OF THE W
 HV6131'FENCE.  PROJECTS 6 INCHES.  REFERENCE MARK NO.3, AZIMUTH MARK,
 HV6131'IS ABOUT 0.4 MILE W OF THE STATION, AT THE NW CORNER OF A
 HV6131'WIRE-FENCED FEED YARD ABOUT 100 FEET SQUARE.
 HV6131'
 HV6131'TO REACH FROM CAMBRIDGE, GO SW ON PAVED ROAD THROUGH CHURCH
 HV6131'CREEK AND MADISON TO TAYLORS ISLAND.  (ACROSS WOODEN BRIDGE) GO
 HV6131'0.2 MILE TAKE RIGHT FORK, GO 0.6 MILE TAKE RIGHT FORK
 HV6131'AGAIN.  GO 2.1 MILE TURN RIGHT AT T-ROAD.  GO 1.1 MILE TO GATE
 HV6131'OF CLUBHOUSE, GO AROUND S SIDE OF HOUSE AND GO 0.2 MILE THROUGH
 HV6131'FIELD TO STATION.
 HV6131
 HV6131                          STATION RECOVERY (1942)
 HV6131
 HV6131'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6131'THE FOLLOWING DISCREPANCY WAS NOTED IN THE FIELD WITH THE
 HV6131'DESCRIPTION.
 HV6131'
 HV6131'(1) 39 FEET S OF THE WATERS EDGE, NOT 68 FEET.
 HV6131'
 HV6131'THE STATION IS LOCATED ON THE S SIDE OF THE LITTLE CHOPTANK
 HV6131'RIVER, AT THE MOUTH OF SLAUGHTER CREEK ON THE EXTREME NORTHERN
 HV6131'END OF TAYLORS ISLAND, ON THE PROPERTY OF HOOPERS POINT GUN
 HV6131'CLUB, ABOUT HALF A MILE E OF THE CLUBHOUSE, 39 FEET S OF THE
 HV6131'SHORE, 140 FEET N OF AN OLD CEMETERY AND 400 FEET NE OF THE END
 HV6131'OF A SHARPLY DEFINED DITCH LINE.  THE STATION IS A BRONZE DISK,
 HV6131'STAMPED HOOP 2 1934 SET IN THE TOP OF AN 11-INCH SQUARE
 HV6131'CONCRETE MONUMENT, WHICH PROJECTS ABOUT 2 INCHES ABOVE THE
 HV6131'SURFACE OF THE GROUND.  THE STATION IS IN GOOD CONDITION.
 HV6131'
 HV6131'REFERENCE MARK NO.1 WAS NOT LOCATED.  THIS MARK HAS BEEN WASHED
 HV6131'OUT AND DESTROYED.
 HV6131'
 HV6131'REFERENCE MARK NO.2 IS LOCATED 138.90 FEET SE OF THE
 HV6131'STATION.  THE MARK IS A BRONZE DISK, STAMPED HOOP 2 1934 NO.2,
 HV6131'SET IN THE TOP OF AN 11-INCH CONCRETE MONUMENT, WHICH PROJECTS
 HV6131'ABOUT AN INCH ABOVE THE SURFACE OF THE GROUND.  THE MARK IS IN
 HV6131'GOOD CONDITION.
 HV6131'
 HV6131'REFERENCE MARK NO.3 IS LOST.  A HALF HOURS SEARCH BY THE PARTY
 HV6131'FAILED TO LOCATE IT.
 HV6131
 HV6131                          STATION RECOVERY (1961)
 HV6131
 HV6131'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6131'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  THERE IS NO
 HV6131'EVIDENCE OF A CEMETERY IN THE AREA.  THE ENTIRE SHORE HAS ERODED
 HV6131'BADLY AND IT IS BELIEVED THAT THE STATION HAS BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DI3182 ***********************************************************************
 DI3182  DESIGNATION -  HOOP 2
 DI3182  PID         -  DI3182
 DI3182  STATE/COUNTY-  MD/DORCHESTER
 DI3182  COUNTRY     -  US
 DI3182  USGS QUAD   -  HONGA (2016)
 DI3182
 DI3182                         *CURRENT SURVEY CONTROL
 DI3182  ______________________________________________________________________
 DI3182* NAD 83(2011) POSITION- 38 16 09.93531(N) 076 10 58.58716(W)   ADJUSTED
 DI3182* NAD 83(2011) ELLIP HT-   -34.683 (meters)        (06/27/12)   ADJUSTED
 DI3182* NAD 83(2011) EPOCH   -  2010.00
 DI3182* NAVD 88 ORTHO HEIGHT -     0.7   (meters)        2.    (feet) GPS OBS
 DI3182  ______________________________________________________________________
 DI3182  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DI3182  GEOID HEIGHT    -        -35.306 (meters)                     GEOID03
 DI3182  GEOID HEIGHT    -        -35.347 (meters)                     GEOID18
 DI3182  NAD 83(2011) X  -  1,197,440.881 (meters)                     COMP
 DI3182  NAD 83(2011) Y  - -4,868,847.587 (meters)                     COMP
 DI3182  NAD 83(2011) Z  -  3,928,945.420 (meters)                     COMP
 DI3182  LAPLACE CORR    -         -3.89  (seconds)                    DEFLEC18
 DI3182
 DI3182  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DI3182  Standards:
 DI3182         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DI3182            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DI3182  -------------------------------------------------------------------
 DI3182  NETWORK    1.16   1.61           0.54   0.38   0.82     -0.02902312
 DI3182  -------------------------------------------------------------------
 DI3182  Click here for local accuracies and other accuracy information.
 DI3182
 DI3182.The horizontal coordinates were established by GPS observations
 DI3182.and adjusted by the National Geodetic Survey in June 2012.
 DI3182
 DI3182.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DI3182.been affixed to the stable North American tectonic plate. See 
 DI3182.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DI3182
 DI3182.The horizontal coordinates are valid at the epoch date displayed above
 DI3182.which is a decimal equivalence of Year/Month/Day.
 DI3182
 DI3182.The orthometric height was determined by GPS observations and a
 DI3182.high-resolution geoid model.
 DI3182
 DI3182.Significant digits in the geoid height do not necessarily reflect accuracy.
 DI3182.GEOID18 height accuracy estimate available here.
 DI3182
 DI3182.Click photographs - Photos may exist for this station.
 DI3182
 DI3182.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DI3182
 DI3182.The Laplace correction was computed from DEFLEC18 derived deflections.
 DI3182
 DI3182.The ellipsoidal height was determined by GPS observations
 DI3182.and is referenced to NAD 83.
 DI3182
 DI3182. The following values were computed from the NAD 83(2011) position.
 DI3182
 DI3182;                    North         East     Units Scale Factor Converg.
 DI3182;SPC MD       -    67,229.104   471,500.398   MT  1.00000546   +0 30 46.1
 DI3182;SPC MD       -   220,567.49  1,546,914.22   sFT  1.00000546   +0 30 46.1
 DI3182;UTM  18      - 4,236,370.807   396,520.350   MT  0.99973187   -0 43 57.8
 DI3182
 DI3182!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DI3182!SPC MD       -   1.00000544  x   1.00000546  =   1.00001090
 DI3182!UTM  18      -   1.00000544  x   0.99973187  =   0.99973731
 DI3182
 DI3182_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9652036370(NAD 83)
 DI3182
 DI3182|---------------------------------------------------------------------|
 DI3182| PID    Reference Object                     Distance      Geod. Az  |
 DI3182|                                                           dddmmss.s |
 DI3182| DI3181 HOOP 1                              335.279 METERS 32708     |
 DI3182|---------------------------------------------------------------------|
 DI3182
 DI3182                          SUPERSEDED SURVEY CONTROL
 DI3182
 DI3182  NAD 83(1991)-  38 16 09.93552(N)    076 10 58.58799(W) AD(       ) 1
 DI3182  ELLIP H (01/05/07)  -34.654  (m)                       GP(       ) 4 2
 DI3182
 DI3182.Superseded values are not recommended for survey control.
 DI3182
 DI3182.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DI3182.See file dsdata.pdf to determine how the superseded data were derived.
 DI3182
 DI3182_MARKER: DD = SURVEY DISK
 DI3182_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DI3182_STAMPING: HOOP 2 2006
 DI3182_MARK LOGO: MD-019
 DI3182_PROJECTION: RECESSED 7 CENTIMETERS
 DI3182_MAGNETIC: R = STEEL ROD IMBEDDED IN MONUMENT
 DI3182_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DI3182+STABILITY: SURFACE MOTION
 DI3182_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DI3182+SATELLITE: SATELLITE OBSERVATIONS - March 20, 2014
 DI3182
 DI3182  HISTORY     - Date     Condition        Report By
 DI3182  HISTORY     - 20060829 MONUMENTED       JMTMD
 DI3182  HISTORY     - 20140320 GOOD             ARCSHE
 DI3182
 DI3182                          STATION DESCRIPTION
 DI3182
 DI3182'DESCRIBED BY JMT ENGINEERING 2006 (BJB)
 DI3182'THE STATION IS LOCATED IN DORCHESTER COUNTY, MARYLAND, NEAR FISHING
 DI3182'CREEK, MARYLAND.   IT IS ABOUT 21.0 MI (33.8 KM) SOUTHWEST OF
 DI3182'CAMBRIDGE, MARYLAND, ABOUT 35.5 MI (57.1 KM)  SOUTHWEST OF EASTON,
 DI3182'MARYLAND AND ABOUT 32.5 MI (52.3 KM) SOUTHWEST OF SALISBURY,
 DI3182'MARYLAND.
 DI3182'
 DI3182'TO REACH THE STATION FROM THE INTERSECTION US RTE 50 AND SR 16 (MOUNT
 DI3182'HOLLY-EAST NEW  MARKET ROAD) PROCEED NORTHWEST ON US RTE 50 FOR 2.6 MI
 DI3182'(4.2 KM) TO INTERSECTION WITH SR  16 (CHURCH CREEK ROAD/ CAMBRIDGE
 DI3182'BYPASS).  TURN LEFT AND PROCEED 7.3 MI (11.7 KM)  SOUTHWEST TO
 DI3182'INTERSECTION WITH SR 335 (CHURCH CREEK- GOLDEN HILL ROAD).  TURN LEFT
 DI3182'AND  PROCEED SOUTHWEST 9.8 MI (15.8. KM) TO INTERSECTION WITH SR 336
 DI3182'(CRAPO ROAD).  TURN RIGHT  TO REMAIN ON SR 335 (HOOPERS ISLAND ROAD)
 DI3182'AND PROCEED 8.3 MI (13.3 KM) SOUTHWEST TO  INTERSECTION WITH OLD HOUSE
 DI3182'POINT ROAD.  TURN RIGHT TO REMAIN ON HOOPERS ISLAND ROAD/
 DI3182'HOOPERSVILLE ROAD AND PROCEED 5.5 MI (8.8 KM) SOUTHWEST TO THE STATION
 DI3182'ON THE LEFT.
 DI3182'
 DI3182'STATION IS 3.5 FT (1.1 M) NORTHEAST OF THE NORTHEAST EDGE OF
 DI3182'HOOPERSVILLE ROAD, 14.8 FT  (4.5 M) WEST OF UTILITY POLE CHOPTANK
 DI3182'513-276 AND 93.5 FT (28.5 M) EAST OF TELEPHONE  PEDESTAL 244/12.  A 3
 DI3182'IN BRASS DISK STAMPED HOOP 2 SET IN THE TOP OF A 1 FT (0.3 M) CONCRETE
 DI3182'MONUMENT RECESSED 0.20 FT BELOW THE GROUND.
 DI3182
 DI3182                          STATION RECOVERY (2014)
 DI3182
 DI3182'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 DI3182'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1544 ***********************************************************************
 JW1544  DESIGNATION -  HOOP RM 1
 JW1544  PID         -  JW1544
 JW1544  STATE/COUNTY-  MD/GARRETT
 JW1544  COUNTRY     -  US
 JW1544  USGS QUAD   -  DEER PARK (2016)
 JW1544
 JW1544                         *CURRENT SURVEY CONTROL
 JW1544  ______________________________________________________________________
 JW1544* NAD 83(1986) POSITION- 39 28 39.80   (N) 079 21 14.88   (W)   HD_HELD1
 JW1544* NAVD 88 ORTHO HEIGHT -   854.436 (meters)     2803.26  (feet) ADJUSTED
 JW1544  ______________________________________________________________________
 JW1544  GEOID HEIGHT    -        -31.208 (meters)                     GEOID18
 JW1544  DYNAMIC HEIGHT  -        853.863 (meters)     2801.38  (feet) COMP
 JW1544  MODELED GRAVITY -    979,925.6   (mgal)                       NAVD 88
 JW1544
 JW1544  VERT ORDER      -  SECOND    CLASS II
 JW1544
 JW1544.The horizontal coordinates were determined by differentially corrected
 JW1544.hand held GPS observations or other comparable positioning techniques
 JW1544.and have an estimated accuracy of +/- 3 meters.
 JW1544
 JW1544.The orthometric height was determined by differential leveling and
 JW1544.adjusted by the NATIONAL GEODETIC SURVEY
 JW1544.in June 1991.
 JW1544
 JW1544.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1544.GEOID18 height accuracy estimate available here.
 JW1544
 JW1544.Click photographs - Photos may exist for this station.
 JW1544
 JW1544.The dynamic height is computed by dividing the NAVD 88
 JW1544.geopotential number by the normal gravity value computed on the
 JW1544.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1544.degrees latitude (g = 980.6199 gals.).
 JW1544
 JW1544.The modeled gravity was interpolated from observed gravity values.
 JW1544
 JW1544;                    North         East    Units  Estimated Accuracy
 JW1544;SPC MD       -   203,653.1     197,469.8     MT  (+/- 3 meters HH1 GPS) 
 JW1544
 JW1544_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4155871084(NAD 83)
 JW1544
 JW1544                          SUPERSEDED SURVEY CONTROL
 JW1544
 JW1544.No superseded survey control is available for this station.
 JW1544
 JW1544_MARKER: DR = REFERENCE MARK DISK
 JW1544_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1544_STAMPING: HOOP NO 1 1975
 JW1544_MARK LOGO: NGS
 JW1544_PROJECTION: FLUSH
 JW1544_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1544+STABILITY: SURFACE MOTION
 JW1544_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1544+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2016
 JW1544
 JW1544  HISTORY     - Date     Condition        Report By
 JW1544  HISTORY     - 1975     MONUMENTED       NGS
 JW1544  HISTORY     - 19901002 GOOD             NGS
 JW1544  HISTORY     - 20090725 GOOD             GEOCAC
 JW1544  HISTORY     - 20160923 GOOD             GEOCAC
 JW1544
 JW1544                          STATION DESCRIPTION
 JW1544
 JW1544'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JW1544'9.3 KM (5.8 MI) NORTHEASTERLY ALONG U.S. HIGHWAY 219 FROM THE JUNCTION
 JW1544'OF STATE HIGHWAY 39 IN OAKLAND, 0.7 KM (0.4 MI) SOUTHWEST OF THE
 JW1544'INTERSECTION OF SAND FLAT ROAD, 11.7 M (38.4 FT) SOUTHEAST OF THE
 JW1544'HIGHWAY CENTERLINE, 4.7 M (15.4 FT) NORTHEAST OF TRIANGULATION
 JW1544'STATION HOOP, 0.6 M (2.0 FT) ABOVE THE LEVEL OF THE HIGHWAY, 0.3 M
 JW1544'(1.0 FT) NORTHWEST OF A WITNESS POST AND FENCE, AND THE MONUMENT IS
 JW1544'FLUSH WITH THE GROUND SURFACE.
 JW1544
 JW1544                          STATION RECOVERY (2009)
 JW1544
 JW1544'RECOVERY NOTE BY GEOCACHING 2009 (BP)
 JW1544'THE WITNESS MARKER IS STILL IN PLACE ON THE FENCE LINE.
 JW1544
 JW1544                          STATION RECOVERY (2016)
 JW1544
 JW1544'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW1544'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1545 ***********************************************************************
 JW1545  DESIGNATION -  HOOP RM 2
 JW1545  PID         -  JW1545
 JW1545  STATE/COUNTY-  MD/GARRETT
 JW1545  COUNTRY     -  US
 JW1545  USGS QUAD   -  DEER PARK (2016)
 JW1545
 JW1545                         *CURRENT SURVEY CONTROL
 JW1545  ______________________________________________________________________
 JW1545* NAD 83(1986) POSITION- 39 28 39.52   (N) 079 21 15.05   (W)   HD_HELD1
 JW1545* NAVD 88 ORTHO HEIGHT -   854.906 (meters)     2804.80  (feet) ADJUSTED
 JW1545  ______________________________________________________________________
 JW1545  GEOID HEIGHT    -        -31.208 (meters)                     GEOID18
 JW1545  DYNAMIC HEIGHT  -        854.332 (meters)     2802.92  (feet) COMP
 JW1545  MODELED GRAVITY -    979,925.6   (mgal)                       NAVD 88
 JW1545
 JW1545  VERT ORDER      -  SECOND    CLASS II
 JW1545
 JW1545.The horizontal coordinates were determined by differentially corrected
 JW1545.hand held GPS observations or other comparable positioning techniques
 JW1545.and have an estimated accuracy of +/- 3 meters.
 JW1545
 JW1545.The orthometric height was determined by differential leveling and
 JW1545.adjusted by the NATIONAL GEODETIC SURVEY
 JW1545.in June 1991.
 JW1545
 JW1545.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1545.GEOID18 height accuracy estimate available here.
 JW1545
 JW1545.Click photographs - Photos may exist for this station.
 JW1545
 JW1545.The dynamic height is computed by dividing the NAVD 88
 JW1545.geopotential number by the normal gravity value computed on the
 JW1545.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1545.degrees latitude (g = 980.6199 gals.).
 JW1545
 JW1545.The modeled gravity was interpolated from observed gravity values.
 JW1545
 JW1545;                    North         East    Units  Estimated Accuracy
 JW1545;SPC MD       -   203,644.5     197,465.5     MT  (+/- 3 meters HH1 GPS) 
 JW1545
 JW1545_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD4155571076(NAD 83)
 JW1545
 JW1545                          SUPERSEDED SURVEY CONTROL
 JW1545
 JW1545.No superseded survey control is available for this station.
 JW1545
 JW1545_MARKER: DR = REFERENCE MARK DISK
 JW1545_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1545_STAMPING: HOOP NO 2 1975
 JW1545_MARK LOGO: NGS
 JW1545_PROJECTION: FLUSH
 JW1545_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1545+STABILITY: SURFACE MOTION
 JW1545_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1545+SATELLITE: SATELLITE OBSERVATIONS - September 23, 2016
 JW1545
 JW1545  HISTORY     - Date     Condition        Report By
 JW1545  HISTORY     - 1975     MONUMENTED       NGS
 JW1545  HISTORY     - 19901002 GOOD             NGS
 JW1545  HISTORY     - 20090725 GOOD             GEOCAC
 JW1545  HISTORY     - 20160923 GOOD             GEOCAC
 JW1545
 JW1545                          STATION DESCRIPTION
 JW1545
 JW1545'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JW1545'9.3 KM (5.8 MI) NORTHEASTERLY ALONG U.S. HIGHWAY 219 FROM THE JUNCTION
 JW1545'OF STATE HIGHWAY 39 IN OAKLAND, 0.7 KM (0.4 MI) SOUTHWEST OF THE
 JW1545'INTERSECTION OF SAND FLAT ROAD, 11.6 M (38.1 FT) SOUTHEAST OF THE
 JW1545'HIGHWAY CENTERLINE, 4.9 M (16.1 FT) SOUTHWEST OF TRIANGULATION
 JW1545'STATION HOOP, 0.6 M (2.0 FT) ABOVE THE LEVEL OF THE HIGHWAY, 0.2 M
 JW1545'(0.7 FT) NORTHWEST OF A WITNESS POST AND FENCE, AND THE MONUMENT IS
 JW1545'FLUSH WITH THE GROUND SURFACE.
 JW1545
 JW1545                          STATION RECOVERY (2009)
 JW1545
 JW1545'RECOVERY NOTE BY GEOCACHING 2009 (BP)
 JW1545'THE WITNESS MARKER IS STILL IN PLACE ON THE FENCE LINE.
 JW1545
 JW1545                          STATION RECOVERY (2016)
 JW1545
 JW1545'RECOVERY NOTE BY GEOCACHING 2016 (RLM)
 JW1545'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6126 ***********************************************************************
 HV6126  DESIGNATION -  HOOPER POINT 3
 HV6126  PID         -  HV6126
 HV6126  STATE/COUNTY-  MD/DORCHESTER
 HV6126  COUNTRY     -  US
 HV6126  USGS QUAD   -  HUDSON (2016)
 HV6126
 HV6126                         *CURRENT SURVEY CONTROL
 HV6126  ______________________________________________________________________
 HV6126* NAD 83(1991) POSITION- 38 30 19.66374(N) 076 17 06.83385(W)   ADJUSTED
 HV6126* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6126  ______________________________________________________________________
 HV6126  GEOID HEIGHT    -        -34.616 (meters)                     GEOID18
 HV6126  LAPLACE CORR    -         -5.11  (seconds)                    DEFLEC18
 HV6126  HORZ ORDER      -  THIRD
 HV6126
 HV6126.The horizontal coordinates were established by classical geodetic methods
 HV6126.and adjusted by the National Geodetic Survey in January 1992.
 HV6126
 HV6126.The orthometric height was scaled from a topographic map.
 HV6126
 HV6126.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6126.GEOID18 height accuracy estimate available here.
 HV6126
 HV6126.Click photographs - Photos may exist for this station.
 HV6126
 HV6126.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6126
 HV6126. The following values were computed from the NAD 83(1991) position.
 HV6126
 HV6126;                    North         East     Units Scale Factor Converg.
 HV6126;SPC MD       -    93,353.710   462,344.044   MT  0.99997061   +0 26 55.0
 HV6126;SPC MD       -   306,277.96  1,516,873.75   sFT  0.99997061   +0 26 55.0
 HV6126;UTM  18      - 4,262,682.105   387,936.864   MT  0.99975465   -0 48 00.9
 HV6126
 HV6126!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6126!SPC MD       -   1.00000547  x   0.99997061  =   0.99997608
 HV6126!UTM  18      -   1.00000547  x   0.99975465  =   0.99976012
 HV6126
 HV6126:                Primary Azimuth Mark                     Grid Az
 HV6126:SPC MD       -  RAGGED POINT 3                           010 13 45.2
 HV6126:UTM  18      -  RAGGED POINT 3                           011 28 41.1
 HV6126
 HV6126_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH8793662682(NAD 83)
 HV6126
 HV6126|---------------------------------------------------------------------|
 HV6126| PID    Reference Object                     Distance      Geod. Az  |
 HV6126|                                                           dddmmss.s |
 HV6126| HV6136 RAGGED POINT 3                      APPROX. 3.1 KM 0104040.2 |
 HV6126|---------------------------------------------------------------------|
 HV6126
 HV6126                          SUPERSEDED SURVEY CONTROL
 HV6126
 HV6126  NAD 83(1986)-  38 30 19.66180(N)    076 17 06.84949(W) AD(       ) 3
 HV6126  NAD 27      -  38 30 19.24600(N)    076 17 08.01900(W) AD(       ) 3
 HV6126  USSD        -  38 30 19.62200(N)    076 17 07.80600(W) AD(       ) 3
 HV6126
 HV6126.Superseded values are not recommended for survey control.
 HV6126
 HV6126.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6126.See file dsdata.pdf to determine how the superseded data were derived.
 HV6126
 HV6126
 HV6126  HISTORY     - Date     Condition        Report By
 HV6126  HISTORY     - 1901     MONUMENTED       CGS
 HV6126  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6126
 HV6126                          STATION DESCRIPTION
 HV6126
 HV6126'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 HV6126'THE STATION PLOTS IN THE WATER AND IS CONSIDERED LOST BY
 HV6126'PHOTOGRAMMETRY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6448 ***********************************************************************
 HV6448  DESIGNATION -  HOOPER STRAIT LIGHTHOUSE 1898
 HV6448  PID         -  HV6448
 HV6448  STATE/COUNTY-  MD/DORCHESTER
 HV6448  COUNTRY     -  US
 HV6448  USGS QUAD   -  BLOODSWORTH ISLAND (2017)
 HV6448
 HV6448                         *CURRENT SURVEY CONTROL
 HV6448  ______________________________________________________________________
 HV6448* NAD 83(1993) POSITION- 38 13 36.34891(N) 076 04 32.15403(W)   ADJUSTED
 HV6448* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 HV6448  ______________________________________________________________________
 HV6448  GEOID HEIGHT    -        -35.552 (meters)                     GEOID18
 HV6448  LAPLACE CORR    -         -1.60  (seconds)                    DEFLEC18
 HV6448  HORZ ORDER      -  SECOND
 HV6448
 HV6448.The horizontal coordinates were established by classical geodetic methods
 HV6448.and adjusted by the National Geodetic Survey in November 1994.
 HV6448
 HV6448.The orthometric height was scaled from a topographic map.
 HV6448
 HV6448.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6448.GEOID18 height accuracy estimate available here.
 HV6448
 HV6448.Click photographs - Photos may exist for this station.
 HV6448
 HV6448.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6448
 HV6448. The following values were computed from the NAD 83(1993) position.
 HV6448
 HV6448;                    North         East     Units Scale Factor Converg.
 HV6448;SPC MD       -    62,583.268   480,941.536   MT  1.00001355   +0 34 48.7
 HV6448;SPC MD       -   205,325.27  1,577,889.02   sFT  1.00001355   +0 34 48.7
 HV6448;UTM  18      - 4,231,522.230   405,855.561   MT  0.99970915   -0 39 56.2
 HV6448
 HV6448!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6448!SPC MD       -   1.00000373  x   1.00001355  =   1.00001728
 HV6448!UTM  18      -   1.00000373  x   0.99970915  =   0.99971288
 HV6448
 HV6448:                Primary Azimuth Mark                     Grid Az
 HV6448:SPC MD       -  SHARKFIN SHOAL LIGHTHOUSE 1898           108 44 34.5
 HV6448:UTM  18      -  SHARKFIN SHOAL LIGHTHOUSE 1898           109 59 19.4
 HV6448
 HV6448_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0585531522(NAD 83)
 HV6448
 HV6448|---------------------------------------------------------------------|
 HV6448| PID    Reference Object                     Distance      Geod. Az  |
 HV6448|                                                           dddmmss.s |
 HV6448| HU1903 SHARKFIN SHOAL LIGHTHOUSE 1898      APPROX. 8.2 KM 1091923.2 |
 HV6448| HU1907 HAINES POINT LIGHT                  APPROX.11.5 KM 1214001.2 |
 HV6448| HV6471 BLOODWORTH IS TARGET W              APPROX. 7.1 KM 1683340.3 |
 HV6448| HV6478 TARGET V                            APPROX. 7.8 KM 1684346.9 |
 HV6448| HV6467 TARGET X                            APPROX. 6.5 KM 1713239.8 |
 HV6448| HV6473 TARGET U                            APPROX. 7.1 KM 1754647.0 |
 HV6448| HV6481 NORTHEAST ISLAND TOWER              APPROX. 8.6 KM 1763723.0 |
 HV6448| HV6460 TREES GROUP 2 CENTER                APPROX. 4.7 KM 1793022.4 |
 HV6448| HV6472 TARGET T                            APPROX. 7.0 KM 1813048.3 |
 HV6448| HV6476 TARGET R                            APPROX. 7.5 KM 1841708.2 |
 HV6448| HV6474 TARGET S                            APPROX. 7.2 KM 1851631.1 |
 HV6448| HV6482 NOT                                 APPROX. 9.2 KM 1863732.9 |
 HV6448| HV6462 CAT POLE TARGET                     APPROX. 5.2 KM 1903615.9 |
 HV6448| HV6466 EBB POLE TARGET                     APPROX. 6.4 KM 1911705.9 |
 HV6448| HV6465 DOT POLE TARGET                     APPROX. 6.0 KM 1932223.5 |
 HV6448| HV6455 ABE POLE TARGET                     APPROX. 3.9 KM 1971850.2 |
 HV6448|---------------------------------------------------------------------|
 HV6448
 HV6448                          SUPERSEDED SURVEY CONTROL
 HV6448
 HV6448  NAD 83(1991)-  38 13 36.34895(N)    076 04 32.15373(W) AD(       ) 2
 HV6448  NAD 83(1986)-  38 13 36.34887(N)    076 04 32.17243(W) AD(       ) 2
 HV6448  NAD 27      -  38 13 35.90400(N)    076 04 33.41100(W) AD(       ) 2
 HV6448  USSD        -  38 13 36.27200(N)    076 04 33.13300(W) AD(       ) 3
 HV6448
 HV6448.Superseded values are not recommended for survey control.
 HV6448
 HV6448.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6448.See file dsdata.pdf to determine how the superseded data were derived.
 HV6448
 HV6448
 HV6448  HISTORY     - Date     Condition        Report By
 HV6448  HISTORY     - 1898     MONUMENTED       CGS
 HV6448  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6448  HISTORY     - 1948     GOOD             CGS
 HV6448  HISTORY     - 1950     GOOD             CGS
 HV6448  HISTORY     - 1981     GOOD             MDDNR
 HV6448
 HV6448                          STATION DESCRIPTION
 HV6448
 HV6448'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6448'THE BEACON SHOWN HAS BEEN REMOVED AND REPLACED BY A BLACK CAN
 HV6448'BUOY.  IT IS RECOMMENDED THAT THIS INTERSECTION STATION BE
 HV6448'CONSIDERED LOST.
 HV6448'
 HV6448'NOTE--THE DESCRIPTIVE REPORT FOR T 8135 (1942) SHOWS THIS
 HV6448'LIGHTHOUSE AS IN PLACE.  THE NAUTICAL CHART SECTION HAS HAD NO
 HV6448'REPORT THAT THIS LIGHTHOUSE IS LOST.
 HV6448
 HV6448                          STATION RECOVERY (1948)
 HV6448
 HV6448'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948 (RHT)
 HV6448'THE STATION IS ON THE E SHORE OF CHESAPEAKE BAY, ON THE N SIDE
 HV6448'OF HOOPER STRAIT, NEAR THE W ENTRANCE TO THE STRAIT.  THE FINIAL
 HV6448'OF LIGHTHOUSE ATOP A WHITE HEXAGONAL STRUCTURE SUPPORTED ON
 HV6448'BROWN PILING.  RECOVERED IN GOOD CONDITION.
 HV6448
 HV6448                          STATION RECOVERY (1950)
 HV6448
 HV6448'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (JB)
 HV6448'STATION WAS RECOVERED IN GOOD CONDITION.
 HV6448
 HV6448                          STATION RECOVERY (1981)
 HV6448
 HV6448'RECOVERY NOTE BY MD DEPT OF NAT RES 1981 (LW)
 HV6448'STATION RECOVERED GOOD.
 HV6448'
 HV6448'LIGHT HOUSE HAS BEEN RECOVERED REPLACED BY SKELETON TOWER BUILT ON
 HV6448'ORIGINAL PILING STRUCTURE.
 HV6448'
 HV6448'DISTANCE AND DIRECTION FROM NEAREST TOWN--2-1/2 MI SW BISHOPS HEAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6422 ***********************************************************************
 HV6422  DESIGNATION -  HOOPERSVILLE ME CHURCH CUPOLA
 HV6422  PID         -  HV6422
 HV6422  STATE/COUNTY-  MD/DORCHESTER
 HV6422  COUNTRY     -  US
 HV6422  USGS QUAD   -  HONGA (2016)
 HV6422
 HV6422                         *CURRENT SURVEY CONTROL
 HV6422  ______________________________________________________________________
 HV6422* NAD 83(1991) POSITION- 38 15 36.55094(N) 076 10 47.91501(W)   ADJUSTED
 HV6422* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6422  ______________________________________________________________________
 HV6422  GEOID HEIGHT    -        -35.369 (meters)                     GEOID18
 HV6422  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 HV6422  HORZ ORDER      -  THIRD
 HV6422
 HV6422.The horizontal coordinates were established by classical geodetic methods
 HV6422.and adjusted by the National Geodetic Survey in January 1992.
 HV6422
 HV6422.The orthometric height was scaled from a topographic map.
 HV6422
 HV6422.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6422.GEOID18 height accuracy estimate available here.
 HV6422
 HV6422.Click photographs - Photos may exist for this station.
 HV6422
 HV6422.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6422
 HV6422. The following values were computed from the NAD 83(1991) position.
 HV6422
 HV6422;                    North         East     Units Scale Factor Converg.
 HV6422;SPC MD       -    66,202.100   471,769.058   MT  1.00000717   +0 30 52.8
 HV6422;SPC MD       -   217,198.06  1,547,795.65   sFT  1.00000717   +0 30 52.8
 HV6422;UTM  18      - 4,235,338.490   396,766.556   MT  0.99973125   -0 43 50.7
 HV6422
 HV6422!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6422!SPC MD       -   1.00000559  x   1.00000717  =   1.00001276
 HV6422!UTM  18      -   1.00000559  x   0.99973125  =   0.99973684
 HV6422
 HV6422_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9676635338(NAD 83)
 HV6422
 HV6422                          SUPERSEDED SURVEY CONTROL
 HV6422
 HV6422  NAD 83(1986)-  38 15 36.55068(N)    076 10 47.93221(W) AD(       ) 3
 HV6422  NAD 27      -  38 15 36.10700(N)    076 10 49.14000(W) AD(       ) 3
 HV6422  USSD        -  38 15 36.47000(N)    076 10 48.87800(W) AD(       ) 3
 HV6422
 HV6422.Superseded values are not recommended for survey control.
 HV6422
 HV6422.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6422.See file dsdata.pdf to determine how the superseded data were derived.
 HV6422
 HV6422_MARKER: 86 = CUPOLA
 HV6422
 HV6422  HISTORY     - Date     Condition        Report By
 HV6422  HISTORY     - 1910     FIRST OBSERVED   MDSFC
 HV6422  HISTORY     - 1932     GOOD             CGS
 HV6422  HISTORY     - 1942     GOOD             CGS
 HV6422  HISTORY     - 1946     GOOD             CGS
 HV6422  HISTORY     - 1961     GOOD             CGS
 HV6422  HISTORY     - 1981     GOOD             MDDNR
 HV6422
 HV6422                          STATION DESCRIPTION
 HV6422
 HV6422'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV6422'STATION IS ON THE EASTERN SHORE OF CHESAPEAKE BAY IN TOWN OF
 HV6422'HOOPERSVILLE ON MIDDLE HOOPER ISLAND, ABOUT 1/4 MILE SW OF
 HV6422'HOOPER ISLAND WHARF.  STATION IS CENTER OF BELL CUPOLA ON CHURCH
 HV6422'KNOWN AS HOOPERSVILLE METHODIST EPISCOPAL CHURCH.
 HV6422
 HV6422                          STATION RECOVERY (1932)
 HV6422
 HV6422'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HV6422'STATION WAS RECOVERED AND USED, AND TIED INTO THE MAIN SCHEME
 HV6422'TRIANGULATION AS A SUPPLEMENTARY STATION.
 HV6422'
 HV6422'THE STATION NOW IS DIRECTLY INLAND FROM HOOPERSVILLE WHARF.
 HV6422
 HV6422                          STATION RECOVERY (1942)
 HV6422
 HV6422'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6422'THE STATION IS LOCATED ON THE EASTERN SHORE OF CHESAPEAKE BAY,
 HV6422'IN THE TOWN OF HOOPERSVILLE ON MIDDLE HOOPER ISLAND, ABOUT 1/4
 HV6422'MILE SW OF ISLAND WHARF.  THE STATION IS THE TOP OF THE 35-FOOT
 HV6422'SPIRE ON HOOPERSVILLE METHODIST EPISCOPAL CHURCH, WHICH IS
 HV6422'LOCATED 85 FEET W OF THE CENTER LINE OF THE MAIN ROAD, AND 290
 HV6422'FEET SW OF THE INTERSECTION OF THE MAIN ROAD WITH A SIDE ROAD
 HV6422'LEADING TO THE SHORE OF THE HONGA RIVER.  THE STATION IS IN
 HV6422'GOOD CONDITION.
 HV6422
 HV6422                          STATION RECOVERY (1946)
 HV6422
 HV6422'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1946 (RRM)
 HV6422'RECOVERED AS DESCRIBED.  DESCRIPTION IS ADEQUATE.  THE CUPOLA IS
 HV6422'OBSCURED IN MOST DIRECTIONS BY TREES.
 HV6422
 HV6422                          STATION RECOVERY (1961)
 HV6422
 HV6422'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV6422'RECOVERED AS DESCRIBED.  THE CUPOLA IS STILL IN GOOD CONDITION.
 HV6422
 HV6422                          STATION RECOVERY (1981)
 HV6422
 HV6422'RECOVERY NOTE BY MD DEPT OF NAT RES 1981 (LW)
 HV6422'RECOVERED GOOD - 4 SIDED TRIANGULAR ROOF ON TOWER - MOST VISIBLE FROM
 HV6422'HONGA R. SIDE.
 HV6422'
 HV6422'DISTANCE AND DIRECTION FROM NEAREST TOWN--IN HOOPERSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7220 ***********************************************************************
 JV7220  DESIGNATION -  HOOVER
 JV7220  PID         -  JV7220
 JV7220  STATE/COUNTY-  MD/FREDERICK
 JV7220  COUNTRY     -  US
 JV7220  USGS QUAD   -  WOODSBORO (2016)
 JV7220
 JV7220                         *CURRENT SURVEY CONTROL
 JV7220  ______________________________________________________________________
 JV7220* NAD 83(2011) POSITION- 39 37 15.14725(N) 077 22 08.40310(W)   ADJUSTED
 JV7220* NAD 83(2011) ELLIP HT-    92.431 (meters)        (06/27/12)   ADJUSTED
 JV7220* NAD 83(2011) EPOCH   -  2010.00
 JV7220* NAVD 88 ORTHO HEIGHT -   125.6   (meters)      412.    (feet) GPS OBS
 JV7220  ______________________________________________________________________
 JV7220  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV7220  GEOID HEIGHT    -        -33.450 (meters)                     GEOID93
 JV7220  GEOID HEIGHT    -        -33.131 (meters)                     GEOID18
 JV7220  NAD 83(2011) X  -  1,075,803.316 (meters)                     COMP
 JV7220  NAD 83(2011) Y  - -4,800,665.500 (meters)                     COMP
 JV7220  NAD 83(2011) Z  -  4,045,708.813 (meters)                     COMP
 JV7220  LAPLACE CORR    -          0.76  (seconds)                    DEFLEC18
 JV7220
 JV7220  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7220  Standards:
 JV7220         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7220            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7220  -------------------------------------------------------------------
 JV7220  NETWORK    1.65   2.04           0.73   0.61   1.04      0.04646000
 JV7220  -------------------------------------------------------------------
 JV7220  Click here for local accuracies and other accuracy information.
 JV7220
 JV7220.The horizontal coordinates were established by GPS observations
 JV7220.and adjusted by the National Geodetic Survey in June 2012.
 JV7220
 JV7220.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7220.been affixed to the stable North American tectonic plate. See 
 JV7220.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7220
 JV7220.The horizontal coordinates are valid at the epoch date displayed above
 JV7220.which is a decimal equivalence of Year/Month/Day.
 JV7220
 JV7220.The orthometric height was determined by GPS observations and a
 JV7220.high-resolution geoid model.
 JV7220
 JV7220.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7220.GEOID18 height accuracy estimate available here.
 JV7220
 JV7220.Click photographs - Photos may exist for this station.
 JV7220
 JV7220.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7220
 JV7220.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7220
 JV7220.The ellipsoidal height was determined by GPS observations
 JV7220.and is referenced to NAD 83.
 JV7220
 JV7220. The following values were computed from the NAD 83(2011) position.
 JV7220
 JV7220;                    North         East     Units Scale Factor Converg.
 JV7220;SPC MD       -   216,999.442   368,315.018   MT  1.00003436   -0 13 53.8
 JV7220;SPC MD       -   711,939.00  1,208,380.19   sFT  1.00003436   -0 13 53.8
 JV7220;UTM  18      - 4,388,360.957   296,657.962   MT  1.00010909   -1 30 40.5
 JV7220
 JV7220!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7220!SPC MD       -   0.99998550  x   1.00003436  =   1.00001986
 JV7220!UTM  18      -   0.99998550  x   1.00010909  =   1.00009459
 JV7220
 JV7220_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9665788360(NAD 83)
 JV7220
 JV7220                          SUPERSEDED SURVEY CONTROL
 JV7220
 JV7220  NAD 83(2007)-  39 37 15.14752(N)    077 22 08.40380(W) AD(2002.00) 0
 JV7220  ELLIP H (02/10/07)   92.457  (m)                       GP(2002.00)    
 JV7220  ELLIP H (08/30/02)   92.452  (m)                       GP(       ) 4 2
 JV7220  NAD 83(1991)-  39 37 15.14781(N)    077 22 08.40399(W) AD(       ) 1
 JV7220  ELLIP H (02/09/94)   92.384  (m)                       GP(       ) 4 1
 JV7220
 JV7220.Superseded values are not recommended for survey control.
 JV7220
 JV7220.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7220.See file dsdata.pdf to determine how the superseded data were derived.
 JV7220
 JV7220_MARKER: DD = SURVEY DISK
 JV7220_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7220_STAMPING: HOOVER 1993
 JV7220_MARK LOGO: MD-021
 JV7220_PROJECTION: RECESSED 3 CENTIMETERS
 JV7220_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV7220_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7220+STABILITY: SURFACE MOTION
 JV7220_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7220+SATELLITE: SATELLITE OBSERVATIONS - March 01, 2017
 JV7220
 JV7220  HISTORY     - Date     Condition        Report By
 JV7220  HISTORY     - 1993     MONUMENTED       GREOMA
 JV7220  HISTORY     - 20110403 GOOD             NGS
 JV7220  HISTORY     - 20170301 GOOD             BASE9
 JV7220
 JV7220                          STATION DESCRIPTION
 JV7220
 JV7220'DESCRIBED BY GREENHORNE-OMARA 1993
 JV7220'FROM THE INTERSECTION OF MD RTE 77 (ROCKY RIDGE ROAD) AND MD RTE 550
 JV7220'IN THURMONT, MD, PROCEED EAST ON RTE 77 1.1 MILES (1.8 KM) THROUGH
 JV7220'THE VILLAGE OF GRACEHAM TO THE INTERSECTION OF MD RTE 77 AND HOOVERS
 JV7220'MILL ROAD. TURN LEFT ON HOOVERS MILL ROAD AND PROCEED NORTHEASTERLY
 JV7220'0.6 MILES (1.0 KM) TO THE STATION ON THE RIGHT. STATION IS 23 FEET
 JV7220'(7.0 M) SOUTHEAST OF THE CENTERLINE OF HOOVERS MILL ROAD, 4.5 FEET
 JV7220'(1.4 M) NORTHEAST OF A WIRE FENCE, AND 32 FEET (9.8 M) SOUTHWEST OF C
 JV7220'AND P POWER POLE NO. 15. STATION IS A BRASS DISK SET IN THE TOP OF AN
 JV7220'8 INCH ROUND CONCRETE MONUMENT SET FLUSH WITH THE GROUND.
 JV7220
 JV7220                          STATION RECOVERY (2011)
 JV7220
 JV7220'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2011 (MWH)
 JV7220'RECOVERED IN GOOD CONDITION
 JV7220
 JV7220                          STATION RECOVERY (2017)
 JV7220
 JV7220'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2017 (DRD)
 JV7220'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7194 ***********************************************************************
 HV7194  DESIGNATION -  HOP
 HV7194  PID         -  HV7194
 HV7194  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7194  COUNTRY     -  US
 HV7194  USGS QUAD   -  DEALE (2016)
 HV7194
 HV7194                         *CURRENT SURVEY CONTROL
 HV7194  ______________________________________________________________________
 HV7194* NAD 83(1991) POSITION- 38 46 11.15567(N) 076 33 17.07693(W)   ADJUSTED
 HV7194* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7194  ______________________________________________________________________
 HV7194  GEOID HEIGHT    -        -33.521 (meters)                     GEOID18
 HV7194  LAPLACE CORR    -         -3.92  (seconds)                    DEFLEC18
 HV7194  HORZ ORDER      -  THIRD
 HV7194
 HV7194.The horizontal coordinates were established by classical geodetic methods
 HV7194.and adjusted by the National Geodetic Survey in January 1992.
 HV7194
 HV7194.The orthometric height was scaled from a topographic map.
 HV7194
 HV7194.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7194.GEOID18 height accuracy estimate available here.
 HV7194
 HV7194.Click photographs - Photos may exist for this station.
 HV7194
 HV7194.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7194
 HV7194. The following values were computed from the NAD 83(1991) position.
 HV7194
 HV7194;                    North         East     Units Scale Factor Converg.
 HV7194;SPC MD       -   122,542.744   438,693.621   MT  0.99995155   +0 16 46.0
 HV7194;SPC MD       -   402,042.32  1,439,280.65   sFT  0.99995155   +0 16 46.0
 HV7194;UTM  18      - 4,292,375.398   364,933.199   MT  0.99982465   -0 58 25.4
 HV7194
 HV7194!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7194!SPC MD       -   1.00000530  x   0.99995155  =   0.99995685
 HV7194!UTM  18      -   1.00000530  x   0.99982465  =   0.99982995
 HV7194
 HV7194:                Primary Azimuth Mark                     Grid Az
 HV7194:SPC MD       -  SPRING                                   092 55 55.1
 HV7194:UTM  18      -  SPRING                                   094 11 06.5
 HV7194
 HV7194_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6493392375(NAD 83)
 HV7194
 HV7194|---------------------------------------------------------------------|
 HV7194| PID    Reference Object                     Distance      Geod. Az  |
 HV7194|                                                           dddmmss.s |
 HV7194| HV6295 SPRING                              APPROX.14.8 KM 0931241.1 |
 HV7194|---------------------------------------------------------------------|
 HV7194
 HV7194                          SUPERSEDED SURVEY CONTROL
 HV7194
 HV7194  NAD 83(1986)-  38 46 11.15327(N)    076 33 17.08939(W) AD(       ) 3
 HV7194  NAD 27      -  38 46 10.71900(N)    076 33 18.23600(W) AD(       ) 3
 HV7194
 HV7194.Superseded values are not recommended for survey control.
 HV7194
 HV7194.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7194.See file dsdata.pdf to determine how the superseded data were derived.
 HV7194
 HV7194_MARKER: DS = TRIANGULATION STATION DISK
 HV7194_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7194_STAMPING: HOP 1933
 HV7194_MARK LOGO: CGS
 HV7194_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7194
 HV7194  HISTORY     - Date     Condition        Report By
 HV7194  HISTORY     - 1933     MONUMENTED       CGS
 HV7194  HISTORY     - 1960     GOOD             CGS
 HV7194  HISTORY     - 1973     GOOD             MDDNR
 HV7194  HISTORY     - 1978     GOOD             NGS
 HV7194  HISTORY     - 1988     GOOD             MDDNR
 HV7194
 HV7194                          STATION DESCRIPTION
 HV7194
 HV7194'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (ERM)
 HV7194'STATION IS LOCATED ON THE NARROW POINT ON THE E SIDE OF THE
 HV7194'ENTRANCE INTO ROCKHOLE CREEK FROM HERRING BAY, IN MARSH AND 8
 HV7194'METERS FROM THE EXTREME END OF THE POINT.  STATION IS ABOUT 185
 HV7194'METERS N OF THE ENTRANCE BEACON, AND ABOUT 40 METERS SW OF A
 HV7194'SUMMER COTTAGE.
 HV7194'
 HV7194'STATION MARK IS A STANDARD BRONZE DISK IN A TILE, AS DESCRIBED.
 HV7194'
 HV7194'REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE, AS
 HV7194'DESCRIBED.  BOTH REFERENCE MARKS ARE ON SOLID GROUND.
 HV7194'
 HV7194'REFERENCE MARK NO.1 IS DISTANT FROM THE STATION 27.127 METERS S 60
 HV7194'DEG E.
 HV7194'
 HV7194'REFERENCE MARK NO.2 IS DISTANT FROM THE STATION 27.216 METERS S 35
 HV7194'DEG W.
 HV7194'
 HV7194'STATION WAS ORIGINALLY ESTABLISHED BY THE PARTY OF J.A. BOND.
 HV7194'
 HV7194'HEIGHT OF SIGNAL ABOVE STATION MARK - 6 METERS.
 HV7194
 HV7194                          STATION RECOVERY (1960)
 HV7194
 HV7194'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7194'STATION AND REFERENCE MARKS 1 AND 2 WERE FOUND IN GOOD CONDITION.
 HV7194'THE STATION IS STAMPED HOP 1933.  R.M. IS STAMPED HOP 1933 NO 1
 HV7194'AND R.M. 2 IS STAMPED HOP 1933 NO 2.  THE DISTANCES WERE CHECKED
 HV7194'AND FOUND CORRECT AS PUBLISHED.
 HV7194'
 HV7194'PREVIOUS DESCRIPTION COMPLETE AND ADEQUATE WITH THE FOLLOWING
 HV7194'EXCEPTIONS.  THE STATION IS ON THE PROPERTY OF MRS. HUE ROBERTS
 HV7194'LOCATED AT THE N. END OF A ROCK JETTY AND 27 METERS S.W. OF THE
 HV7194'CHIMNEY ON THE ROBERTS HOUSE.
 HV7194
 HV7194                          STATION RECOVERY (1973)
 HV7194
 HV7194'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV7194'HOP 1933 GOOD.
 HV7194'
 HV7194'NO 1 FAIR.
 HV7194'
 HV7194'STATION AND RM1 RECOVERED AS DESCRIBED RM1 LEANING TOWARD SW RM2
 HV7194'NOT SEARCHED FOR.  WITNESS POST AND SIGN PLACED 6 IN N OF STATION.
 HV7194
 HV7194                          STATION RECOVERY (1978)
 HV7194
 HV7194'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (RHW)
 HV7194'STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED.  REFERENCE
 HV7194'MARKS 1 AND 2 WERE SEARCHED FOR BUT NOT FOUND.
 HV7194'
 HV7194'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1 MILE S OF
 HV7194'DEALE, MARYLAND.
 HV7194
 HV7194                          STATION RECOVERY (1988)
 HV7194
 HV7194'RECOVERY NOTE BY MD DEPT OF NAT RES 1988 (LW)
 HV7194'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2251 ***********************************************************************
 JV2251  DESIGNATION -  HOPE
 JV2251  PID         -  JV2251
 JV2251  STATE/COUNTY-  MD/FREDERICK
 JV2251  COUNTRY     -  US
 JV2251  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2251
 JV2251                         *CURRENT SURVEY CONTROL
 JV2251  ______________________________________________________________________
 JV2251* NAD 83(1991) POSITION- 39 20 47.24156(N) 077 23 22.44537(W)   ADJUSTED
 JV2251* NAVD 88 ORTHO HEIGHT -   142.941 (meters)      468.97  (feet) ADJUSTED
 JV2251  ______________________________________________________________________
 JV2251  GEOID HEIGHT    -        -32.510 (meters)                     GEOID18
 JV2251  LAPLACE CORR    -          6.06  (seconds)                    DEFLEC18
 JV2251  DYNAMIC HEIGHT  -        142.863 (meters)      468.71  (feet) COMP
 JV2251  MODELED GRAVITY -    980,084.2   (mgal)                       NAVD 88
 JV2251
 JV2251  HORZ ORDER      -  SECOND
 JV2251  VERT ORDER      -  SECOND    CLASS 0
 JV2251
 JV2251.The horizontal coordinates were established by classical geodetic methods
 JV2251.and adjusted by the National Geodetic Survey in January 1992.
 JV2251
 JV2251.The orthometric height was determined by differential leveling and
 JV2251.adjusted by the NATIONAL GEODETIC SURVEY
 JV2251.in June 1991.
 JV2251
 JV2251.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2251.GEOID18 height accuracy estimate available here.
 JV2251
 JV2251.Click photographs - Photos may exist for this station.
 JV2251
 JV2251.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2251
 JV2251.The dynamic height is computed by dividing the NAVD 88
 JV2251.geopotential number by the normal gravity value computed on the
 JV2251.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2251.degrees latitude (g = 980.6199 gals.).
 JV2251
 JV2251.The modeled gravity was interpolated from observed gravity values.
 JV2251
 JV2251. The following values were computed from the NAD 83(1991) position.
 JV2251
 JV2251;                    North         East     Units Scale Factor Converg.
 JV2251;SPC MD       -   186,539.632   366,418.960   MT  0.99998353   -0 14 40.2
 JV2251;SPC MD       -   612,005.44  1,202,159.54   sFT  0.99998353   -0 14 40.2
 JV2251;UTM  18      - 4,357,947.593   294,084.142   MT  1.00012209   -1 30 55.9
 JV2251
 JV2251!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2251!SPC MD       -   0.99998267  x   0.99998353  =   0.99996621
 JV2251!UTM  18      -   0.99998267  x   1.00012209  =   1.00010476
 JV2251
 JV2251:                Primary Azimuth Mark                     Grid Az
 JV2251:SPC MD       -  REELS                                    335 08 06.7
 JV2251:UTM  18      -  REELS                                    336 24 22.4
 JV2251
 JV2251_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9408457947(NAD 83)
 JV2251
 JV2251|---------------------------------------------------------------------|
 JV2251| PID    Reference Object                     Distance      Geod. Az  |
 JV2251|                                                           dddmmss.s |
 JV2251| JV2252 HOPE RM 1                            11.972 METERS 13704     |
 JV2251| JV2250 HOPE RM 2                            10.133 METERS 32524     |
 JV2251| JV2247 REELS                               APPROX. 1.9 KM 3345326.5 |
 JV2251|---------------------------------------------------------------------|
 JV2251
 JV2251                          SUPERSEDED SURVEY CONTROL
 JV2251
 JV2251  NAD 83(1986)-  39 20 47.24152(N)    077 23 22.45590(W) AD(       ) 2
 JV2251  NAD 27      -  39 20 46.86865(N)    077 23 23.50123(W) AD(       ) 2
 JV2251  NGVD 29             143.15   (m)          469.7    (f) LEVELING    3  
 JV2251  NGVD 29 (11/26/84)  143.154  (m)          469.66   (f) ADJUSTED    2 0
 JV2251
 JV2251.Superseded values are not recommended for survey control.
 JV2251
 JV2251.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2251.See file dsdata.pdf to determine how the superseded data were derived.
 JV2251
 JV2251_MARKER: DS = TRIANGULATION STATION DISK
 JV2251_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2251_STAMPING: HOPE 1958
 JV2251_MARK LOGO: CGS
 JV2251_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2251+STABILITY: SURFACE MOTION
 JV2251_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV2251+SATELLITE: SATELLITE OBSERVATIONS - November 05, 2002
 JV2251
 JV2251  HISTORY     - Date     Condition        Report By
 JV2251  HISTORY     - 1958     MONUMENTED       CGS
 JV2251  HISTORY     - 1958     GOOD             CGS
 JV2251  HISTORY     - 20021105 GOOD             POWELL
 JV2251
 JV2251                          STATION DESCRIPTION
 JV2251
 JV2251'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2251'THE STATION IS LOCATED ON A CUTBANK ON SOUTHWEST SIDE OF
 JV2251'U.S. HIGHWAY 240, ABOUT 5.0 MILES SOUTHEAST OF CENTER OF
 JV2251'FREDERICK, 2.5 MILES NORTHWEST OF URBANA AND 1.3 MILES SOUTHEAST
 JV2251'OF THE MONCOACY RIVER.  IT IS 59 FEET SOUTH OF THE CENTER OF THE
 JV2251'SOUTHEAST BOUND LANE OF U.S. HIGHWAY 240.  THE MARK IS SET FLUSH
 JV2251'AND THE DISK IS STAMPED HOPE 1958.
 JV2251'
 JV2251'R.M. NO. 1 IS 55 FEET SOUTHWEST OF THE CENTER OF THE SOUTHEAST
 JV2251'BOUND LANE OF U.S. HIGHWAY 240.  THE MARK IS SET FLUSH AND THE
 JV2251'DISK IT STAMPED HOPE NO 1 1958.
 JV2251'
 JV2251'R.M. NO. 2 IS 57 FEET SOUTHWEST OF THE CENTER OF THE SOUTHEAST
 JV2251'BOUND LANE OF U.S. HIGHWAY 240 AND 3 FEET NORTHEAST OF FENCE
 JV2251'LINE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED HOPE NO 2
 JV2251'1958.
 JV2251'
 JV2251'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 240
 JV2251'AND STATE HIGHWAY 80, ABOUT 0.4 MILE SOUTHWEST OF URBANA.  GO
 JV2251'NORTHWEST ON U.S. HIGHWAY 240 FOR 1.3 MILES TO BRIDGE OVER
 JV2251'HIGHWAY, CONTINUE NORTHWEST ON U.S. HIGHWAY 240 FOR 1.0 MILE TO
 JV2251'THE STATION ON LEFT AS DESCRIBED.
 JV2251'
 JV2251'NO AZIMUTH MARK WAS ESTABLISHED.
 JV2251'
 JV2251'STATION REELS IS VISIBLE FROM GROUND AND COULD BE USED AS AZIMUTH.
 JV2251
 JV2251                          STATION RECOVERY (1958)
 JV2251
 JV2251'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2251'5.3 MI SE FROM FREDERICK.
 JV2251'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 340 FROM THE INTERSECTION
 JV2251'OF U.S. HIGHWAY 40 (CITY ROUTE) AT FREDERICK, THENCE 4.7 MILES
 JV2251'SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT BANK, ABOUT
 JV2251'1.4 MILES SOUTHEAST OF THE LARGE BRIDGE OVER THE MONOCACY RIVER,
 JV2251'ABOUT 80 FEET SOUTHWEST OF THE CENTER LINE OF THE SOUTH BOUND
 JV2251'LANE, 19 FEET NORTH OF A 12-INCH PERSIMMON TREE, 5 FEET SOUTHWEST
 JV2251'OF THE TOP OF CUT, 1 FOOT NORTHEAST OF A METAL WITNESS POST,
 JV2251'ABOUT 25 FEET ABOVE THE LEVEL OF THE HIGHWAY AND SET IN THE TOP
 JV2251'OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV2251
 JV2251                          STATION RECOVERY (2002)
 JV2251
 JV2251'RECOVERY NOTE BY N A POWELL AND ASSOCIATES 2002 (BAP)
 JV2251'STATION IS 2 FEET EAST OF WIRE FENCE AND AS DESCRIBED BY NGS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6186 ***********************************************************************
 HV6186  DESIGNATION -  HOPE
 HV6186  PID         -  HV6186
 HV6186  STATE/COUNTY-  MD/QUEEN ANNES
 HV6186  COUNTRY     -  US
 HV6186  USGS QUAD   -  KENT ISLAND (2016)
 HV6186
 HV6186                         *CURRENT SURVEY CONTROL
 HV6186  ______________________________________________________________________
 HV6186* NAD 83(1991) POSITION- 38 57 31.69512(N) 076 18 55.23728(W)   ADJUSTED
 HV6186* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6186  ______________________________________________________________________
 HV6186  GEOID HEIGHT    -        -33.640 (meters)                     GEOID18
 HV6186  LAPLACE CORR    -         -3.07  (seconds)                    DEFLEC18
 HV6186  HORZ ORDER      -  THIRD
 HV6186
 HV6186.The horizontal coordinates were established by classical geodetic methods
 HV6186.and adjusted by the National Geodetic Survey in January 1992.
 HV6186
 HV6186.The orthometric height was scaled from a topographic map.
 HV6186
 HV6186.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6186.GEOID18 height accuracy estimate available here.
 HV6186
 HV6186.Click photographs - Photos may exist for this station.
 HV6186
 HV6186.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6186
 HV6186. The following values were computed from the NAD 83(1991) position.
 HV6186
 HV6186;                    North         East     Units Scale Factor Converg.
 HV6186;SPC MD       -   143,655.599   459,340.220   MT  0.99995089   +0 25 47.0
 HV6186;SPC MD       -   471,310.08  1,507,018.71   sFT  0.99995089   +0 25 47.0
 HV6186;UTM  18      - 4,313,027.661   386,033.947   MT  0.99975993   -0 49 37.7
 HV6186
 HV6186!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6186!SPC MD       -   1.00000516  x   0.99995089  =   0.99995605
 HV6186!UTM  18      -   1.00000516  x   0.99975993  =   0.99976509
 HV6186
 HV6186:                Primary Azimuth Mark                     Grid Az
 HV6186:SPC MD       -  LANDING                                  146 15 04.6
 HV6186:UTM  18      -  LANDING                                  147 30 29.3
 HV6186
 HV6186_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8603313027(NAD 83)
 HV6186
 HV6186|---------------------------------------------------------------------|
 HV6186| PID    Reference Object                     Distance      Geod. Az  |
 HV6186|                                                           dddmmss.s |
 HV6186| HV6187 KNOCK                               284.124 METERS 10518     |
 HV6186| HV6183 LANDING                             APPROX. 0.5 KM 1464051.6 |
 HV6186|---------------------------------------------------------------------|
 HV6186
 HV6186                          SUPERSEDED SURVEY CONTROL
 HV6186
 HV6186  NAD 83(1986)-  38 57 31.69093(N)    076 18 55.24930(W) AD(       ) 3
 HV6186  NAD 27      -  38 57 31.28400(N)    076 18 56.44100(W) AD(       ) 3
 HV6186  USSD        -  38 57 31.68100(N)    076 18 56.23400(W) AD(       ) 3
 HV6186
 HV6186.Superseded values are not recommended for survey control.
 HV6186
 HV6186.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6186.See file dsdata.pdf to determine how the superseded data were derived.
 HV6186
 HV6186_MARKER: U = CONCRETE POST
 HV6186_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6186_SP_SET: OBJECT IMBEDDED IN GROUND
 HV6186_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6186
 HV6186  HISTORY     - Date     Condition        Report By
 HV6186  HISTORY     - 1909     MONUMENTED       MDSFC
 HV6186  HISTORY     - 1934     GOOD             CGS
 HV6186  HISTORY     - 1939     GOOD             CGS
 HV6186  HISTORY     - 1960     GOOD             CGS
 HV6186  HISTORY     - 1973     GOOD             MDDNR
 HV6186
 HV6186                          STATION DESCRIPTION
 HV6186
 HV6186'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV6186'ON THE WESTERN SHORE OF THOMPSONS CREEK, ON POINT BETWEEN THOMPSONS
 HV6186'CREEK AND A SMALLER CREEK ABOUT 1/2 MILE NW OF COX CREEK, ON
 HV6186'MARSHLAND, ABOUT 1 FOOT ABOVE HIGH WATER, 40 YARDS W OF SHORE, 90
 HV6186'YARDS NW OF SHORE, AND 200 YARDS ESE OF END OF FENCE.  STATION
 HV6186'MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6186'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6186'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES ABOVE SURFACE
 HV6186'OF GROUND.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK
 HV6186'IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE
 HV6186'PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HV6186'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV6186'FOLLOWS--RIGHT TANGENT OF NEAR-CHIMNEY OF LARGE HOUSE, 7/8 MILE,
 HV6186'S 75 DEG 28 MIN W.  NEAR PEAK OF LARGE BRICK HOUSE, 3/8 MILE,
 HV6186'S 85 DEG 17 MIN W.  NEAR PEAK OF HOUSE, 7/8 MILE, N 30 DEG 30 MIN W.
 HV6186'RIGHT PEAK OF LARGE HOUSE, 3/8 MILE, N 1 DEG 30 MIN W.  RIGHT
 HV6186'CORNER OF NEAR-CHIMNEY OF HOUSE, 3/8 MILE, S 70 DEG 35 MIN E.
 HV6186'RIGHT CORNER OF NEAR-CHIMNEY OF HOUSE, 5/8 MILE, S 61 DEG 08 MIN E.
 HV6186'NEAR PEAK OF HOUSE, 1-1/2 MILES, S 32 DEG 29 MIN E.  WEATHER VANE
 HV6186'ON HOUSE WITH TWO CHIMNEYS, 1-7/8 MILES, S 8 DEG 56 MIN E.
 HV6186
 HV6186                          STATION RECOVERY (1934)
 HV6186
 HV6186'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 HV6186'RECOVERED.  STATION IS IN MARSH ABOUT 36 METERS W OF SHORE AND
 HV6186'ABOUT 65 METERS DUE S OF FENCE AT EDGE OF MARSH AND CULTIVATED
 HV6186'FIELD.  MARKER IS M.S.F.C. MONUMENT, TOP OF WHICH IS IN GOOD
 HV6186'CONDITION BUT BASE CRUMBLING.
 HV6186
 HV6186                          STATION RECOVERY (1939)
 HV6186
 HV6186'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV6186'STATION RECOVERED IN GOOD CONDITION.  ON WESTERN SHORE OF THOMPSONS
 HV6186'CREEK, ON POINT BETWEEN THOMPSONS CREEK AND A SMALLER CREEK ABOUT
 HV6186'1/2 MILE NW OF COX CREEK, IN LARGE MARSH AREA.  35 METERS W OF
 HV6186'SHORE OF THOMPSONS CREEK, AND ABOUT 150 METERS NNE OF EXTREME
 HV6186'POINT OF MARSH.
 HV6186'
 HV6186'MARK WAS LOCATED BY SEXTANT FIX, USING BEARINGS GIVEN IN
 HV6186'ORIGINAL DESCRIPTION.
 HV6186'
 HV6186'A 6-FOOT STAKE WAS DRIVEN INTO MARSH BESIDE MARK.
 HV6186
 HV6186                          STATION RECOVERY (1960)
 HV6186
 HV6186'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6186'STATION RECOVERED IN GOOD CONDITION, AS DESCRIBED BY L.W.S. IN
 HV6186'1940.  STATION IS COVERED BY 2 INCHES OF DIRT AND GRASS, AND
 HV6186'MARKED BY A 4X4 INCH POST, AND A 3 INCH POLE BOTH ABOUT 2 FEET
 HV6186'HIGH.
 HV6186'
 HV6186'STATION IS--
 HV6186'
 HV6186'31 YARDS WEST FROM SHORE
 HV6186'
 HV6186'70 YARDS SOUTH FROM FIELD
 HV6186'
 HV6186'8 YARDS NNW FROM A 6X4 FEET MARSH PUDDLE
 HV6186'
 HV6186'5 YARDS SW FROM A 4X4 FEET MARSH PUDDLE
 HV6186'
 HV6186'4 YARDS S FROM A 4X4 FEET MARSH PUDDLE
 HV6186
 HV6186                          STATION RECOVERY (1973)
 HV6186
 HV6186'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV6186'STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED WITH THE
 HV6186'FOLLOWING CHANGES--4 X 4 GONE, WITNESS POST AND SIGN PLACED AT THE
 HV6186'SOUTH EDGE OF MONUMENT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4978 ***********************************************************************
 JV4978  DESIGNATION -  HOPE
 JV4978  PID         -  JV4978
 JV4978  STATE/COUNTY-  MD/KENT
 JV4978  COUNTRY     -  US
 JV4978  USGS QUAD   -  CHESTERTOWN (2017)
 JV4978
 JV4978                         *CURRENT SURVEY CONTROL
 JV4978  ______________________________________________________________________
 JV4978* NAD 83(1991) POSITION- 39 12 42.62721(N) 076 03 31.38973(W)   ADJUSTED
 JV4978* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV4978  ______________________________________________________________________
 JV4978  GEOID HEIGHT    -        -33.451 (meters)                     GEOID18
 JV4978  LAPLACE CORR    -         -2.32  (seconds)                    DEFLEC18
 JV4978  HORZ ORDER      -  THIRD
 JV4978
 JV4978.The horizontal coordinates were established by classical geodetic methods
 JV4978.and adjusted by the National Geodetic Survey in January 1992.
 JV4978
 JV4978.The orthometric height was scaled from a topographic map.
 JV4978
 JV4978.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4978.GEOID18 height accuracy estimate available here.
 JV4978
 JV4978.Click photographs - Photos may exist for this station.
 JV4978
 JV4978.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4978
 JV4978. The following values were computed from the NAD 83(1991) position.
 JV4978
 JV4978;                    North         East     Units Scale Factor Converg.
 JV4978;SPC MD       -   171,942.384   481,291.931   MT  0.99996701   +0 35 26.8
 JV4978;SPC MD       -   564,114.30  1,579,038.61   sFT  0.99996701   +0 35 26.8
 JV4978;UTM  18      - 4,340,819.129   408,596.575   MT  0.99970287   -0 40 09.7
 JV4978
 JV4978!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4978!SPC MD       -   1.00000513  x   0.99996701  =   0.99997214
 JV4978!UTM  18      -   1.00000513  x   0.99970287  =   0.99970800
 JV4978
 JV4978:                Primary Azimuth Mark                     Grid Az
 JV4978:SPC MD       -  MARSH                                    046 14 54.4
 JV4978:UTM  18      -  MARSH                                    047 30 30.9
 JV4978
 JV4978_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0859640819(NAD 83)
 JV4978
 JV4978|---------------------------------------------------------------------|
 JV4978| PID    Reference Object                     Distance      Geod. Az  |
 JV4978|                                                           dddmmss.s |
 JV4978| JV4954 MARSH                               APPROX. 0.6 KM 0465021.2 |
 JV4978| JV4953 TRAP                                APPROX. 0.5 KM 1350428.2 |
 JV4978|---------------------------------------------------------------------|
 JV4978
 JV4978                          SUPERSEDED SURVEY CONTROL
 JV4978
 JV4978  NAD 83(1986)-  39 12 42.61848(N)    076 03 31.40184(W) AD(       ) 3
 JV4978  NAD 27      -  39 12 42.22300(N)    076 03 32.58600(W) AD(       ) 3
 JV4978  USSD        -  39 12 42.68000(N)    076 03 32.36400(W) AD(       ) 3
 JV4978
 JV4978.Superseded values are not recommended for survey control.
 JV4978
 JV4978.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4978.See file dsdata.pdf to determine how the superseded data were derived.
 JV4978
 JV4978_MARKER: N = NAIL
 JV4978_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4978_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4978
 JV4978  HISTORY     - Date     Condition        Report By
 JV4978  HISTORY     - 1909     MONUMENTED       CGS
 JV4978  HISTORY     - 1939     GOOD             CGS
 JV4978
 JV4978                          STATION DESCRIPTION
 JV4978
 JV4978'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JV4978'STATION IS ON THE NW SHORE OF CHESTER RIVER, ON THE LAWN IN
 JV4978'FRONT OF THE RESIDENCE OF HOPE BARROLL, 5 METERS FROM THE RIVER
 JV4978'BANK, ABOUT 15 METERS FROM HIGH-WATER MARK, AND 250 METERS
 JV4978'UPRIVER FROM THE KENT COUNTY END OF THE CHESTERTOWN BRIDGE.
 JV4978'
 JV4978'THE STATION IS MARKED BY A BURIED SQUARE WHITE QUART BOTTLE AND
 JV4978'A NAIL IN CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND G.S. IN
 JV4978'THE TOP OF A 4-INCH DRAINTILE AT THE SURFACE OF THE GROUND.  THE
 JV4978'REFERENCE MARK IS THE CENTER OF THE NECK OF A BURIED QUART BOTTLE
 JV4978'AND A NAIL IN CONCRETE IN THE TOP OF A 3-INCH DRAINTILE FLUSH
 JV4978'WITH THE SURFACE OF THE GROUND.  REFERENCE MARK IS 10.615 METERS
 JV4978'(34.83 FEET) FROM THE STATION N 55 DEG 27 MIN E.
 JV4978
 JV4978                          STATION RECOVERY (1939)
 JV4978
 JV4978'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4978'STATION RECOVERED IN GOOD CONDITION, EXCEPT FOR THE REFERENCE MARK
 JV4978'WHICH IS STILL IN PLACE, BUT THE TOP OF THE TILE HAS BEEN BROKEN
 JV4978'OFF.  THE STATION IS ON PROPERTY OF M.K. BARROLL, ON THE BARROLL
 JV4978'ESTATE ABOUT 1/3 MILE NE OF THE CHESTERTOWN POST OFFICE AND IS ON
 JV4978'THE WATERS EDGE OF THE LAWN BORDERING ON THE CHESTER RIVER, 4
 JV4978'METERS N OF THE EDGE OF THE 5-FOOT BLUFF AND 10 METERS N OF HIGH
 JV4978'WATER.
 JV4978'
 JV4978'THE STATION WAS ORIGINALLY MARKED BY A BURIED SQUARE WHITE QUART
 JV4978'BOTTLE AND A NAIL IN CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND
 JV4978'G.S. IN THE TOP OF A 6-INCH TILE AT THE SURFACE OF THE GROUND.
 JV4978'
 JV4978'THE REFERENCE MARK IS A 4-INCH TILE, PARTLY EXPOSED AND WITH THE
 JV4978'UPPER PORTION BROKEN OFF AND IS 10.62 METERS SW OF THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3484 ***********************************************************************
 JU3484  DESIGNATION -  HOPE RESET
 JU3484  PID         -  JU3484
 JU3484  STATE/COUNTY-  MD/QUEEN ANNES
 JU3484  COUNTRY     -  US
 JU3484  USGS QUAD   -  PRICE (2017)
 JU3484
 JU3484                         *CURRENT SURVEY CONTROL
 JU3484  ______________________________________________________________________
 JU3484* NAD 83(1991) POSITION- 39 02 33.36666(N) 075 59 17.05381(W)   ADJUSTED
 JU3484* NAVD 88 ORTHO HEIGHT -    21.    (meters)       69.    (feet) SCALED
 JU3484  ______________________________________________________________________
 JU3484  GEOID HEIGHT    -        -33.994 (meters)                     GEOID18
 JU3484  LAPLACE CORR    -         -4.33  (seconds)                    DEFLEC18
 JU3484  HORZ ORDER      -  FIRST
 JU3484
 JU3484.The horizontal coordinates were established by classical geodetic methods
 JU3484.and adjusted by the National Geodetic Survey in January 1992.
 JU3484
 JU3484.The orthometric height was scaled from a topographic map.
 JU3484
 JU3484.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3484.GEOID18 height accuracy estimate available here.
 JU3484
 JU3484.Click photographs - Photos may exist for this station.
 JU3484
 JU3484.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3484
 JU3484. The following values were computed from the NAD 83(1991) position.
 JU3484
 JU3484;                    North         East     Units Scale Factor Converg.
 JU3484;SPC MD       -   153,221.002   487,601.405   MT  0.99995407   +0 38 06.4
 JU3484;SPC MD       -   502,692.57  1,599,738.94   sFT  0.99995407   +0 38 06.4
 JU3484;UTM  18      - 4,321,968.622   414,491.688   MT  0.99969003   -0 37 20.7
 JU3484
 JU3484!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3484!SPC MD       -   1.00000208  x   0.99995407  =   0.99995615
 JU3484!UTM  18      -   1.00000208  x   0.99969003  =   0.99969211
 JU3484
 JU3484:                Primary Azimuth Mark                     Grid Az
 JU3484:SPC MD       -  HOPE RM 3 AZIMUTH                        333 53 31.9
 JU3484:UTM  18      -  HOPE RM 3 AZIMUTH                        335 08 59.0
 JU3484
 JU3484_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1449121968(NAD 83)
 JU3484
 JU3484|---------------------------------------------------------------------|
 JU3484| PID    Reference Object                     Distance      Geod. Az  |
 JU3484|                                                           dddmmss.s |
 JU3484| CB2083 HOPE RM 2                            36.363 METERS 00438     |
 JU3484| CB2085 HOPE RM 4                            11.686 METERS 16025     |
 JU3484| CB2086 HOPE RM 5 DRILL HOLE                 11.686 METERS 26439     |
 JU3484| CB2082 HOPE RM 1                            52.212 METERS 28741     |
 JU3484| CB2084 HOPE RM 3 AZIMUTH                                  3343138.3 |
 JU3484|---------------------------------------------------------------------|
 JU3484
 JU3484                          SUPERSEDED SURVEY CONTROL
 JU3484
 JU3484  NAD 83(1986)-  39 02 33.35933(N)    075 59 17.06445(W) AD(       ) 1
 JU3484  NAD 27      -  39 02 32.95800(N)    075 59 18.27700(W) AD(       ) 1
 JU3484  USSD        -  39 02 33.32800(N)    075 59 18.10900(W) AD(       ) 3
 JU3484
 JU3484.Superseded values are not recommended for survey control.
 JU3484
 JU3484.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3484.See file dsdata.pdf to determine how the superseded data were derived.
 JU3484
 JU3484_MARKER: DS = TRIANGULATION STATION DISK
 JU3484_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3484_STAMPING: HOPE 1896 1963
 JU3484_MARK LOGO: CGS
 JU3484_PROJECTION: RECESSED 46 CENTIMETERS
 JU3484_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3484+STABILITY: SURFACE MOTION
 JU3484
 JU3484  HISTORY     - Date     Condition        Report By
 JU3484  HISTORY     - 1897     MONUMENTED       CGS
 JU3484  HISTORY     - 1934     GOOD             CGS
 JU3484  HISTORY     - 1943     GOOD             CGS
 JU3484  HISTORY     - 1963     SEE DESCRIPTION  CGS
 JU3484
 JU3484                          STATION DESCRIPTION
 JU3484
 JU3484'DESCRIBED BY COAST AND GEODETIC SURVEY 1897 (FWP)
 JU3484'ON THE N SIDE OF THE ROAD LEADING FROM CENTERVILLE TO BEAVER DAM,
 JU3484'AND ABOUT 1 MILE W OF HOPE POST OFFICE.  THE STATION WAS MARKED BY
 JU3484'TWO MARBLE BLOCKS, EACH 6 INCHES SQUARE, THE LOWER ONE 18 INCHES AND
 JU3484'THE UPPER ONE 30 INCHES LONG.  THE TOP OF THE UPPER STONE IS
 JU3484'LEVEL WITH THE SURFACE OF THE GROUND.  BOTH STONES HAVE
 JU3484'CROSSLINES AND THE LETTERS U.S.C. AND G.S. CUT INTO THEIR UPPER
 JU3484'FACES.  A STONE AT THE ROADSIDE, MARKING THE SE CORNER OF MRS.
 JU3484'M.A. FLUHARDYS PORTION OF THE LANSDOWN PLANTATION (OCCUPIED
 JU3484'IN 1896 BY E.S. CLOUGH) IS 43.35 FEET FROM THE STATION
 JU3484'S 30 DEG 40 MIN E.  THE E CHIMNEY OF E. DEANS HOUSE IS
 JU3484'N 41 DEG 03 MIN E FROM THE STATION.  THE CENTER CHIMNEY
 JU3484'OF E.S. CLOUGHS HOUSE IS N 44 DEG 41 MIN W FROM
 JU3484'THE STATION.
 JU3484
 JU3484                          STATION RECOVERY (1934)
 JU3484
 JU3484'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JB)
 JU3484'THIS IS A FIRST-ORDER STATION LOCATED ON THE PROPERTY OF MR. T.H.
 JU3484'BINEBRINK, 4 MILES E OF CENTERVILLE, MARYLAND, 40 FEET N OF THE
 JU3484'CENTER LINE OF THE PAVED ROAD LEADING FROM HOPE TO CENTERVILLE, 20
 JU3484'FEET N OF THE FENCE PARALLELING THE ROAD, 23 FEET W OF A N AND S
 JU3484'FENCE.  MARK IS A 6- BY 6-INCH BLOCK OF STONE SET FLUSH WITH THE
 JU3484'GROUND AND STAMPED U.S.C.G. WITH A HOLE IN THE CENTER.
 JU3484'
 JU3484'REFERENCE MARK NO. 1 IS A NEW MARK LOCATED 171.30 FEET N OF THE
 JU3484'STATION, 1 FOOT W OF THE N AND S FENCE, 73 PACES N OF THE FENCE
 JU3484'CORNER AT THE PAVED ROAD, MARK PROJECTS 3 INCHES.  MARK STAMPED HOPE
 JU3484'R.M.  1896-1934.
 JU3484'
 JU3484'REFERENCE MARK NO. 2 IS A NEW MARK LOCATED 119.30 FEET W OF THE
 JU3484'STATION, 1 FOOT N OF THE E AND W FENCE, 15 FEET N OF THE CENTER
 JU3484'LINE OF THE PAVED ROAD.  MARK PROJECTS 3 INCHES.  MARK STAMPED HOPE
 JU3484'R.M. 1896-1934.
 JU3484'
 JU3484'REFERENCE MARK NO. 3 AZIMUTH MARK IS LOCATED 0.3 MILE N OF THE
 JU3484'STATION, 2 FEET E OF THE FENCE CORNER AT THE BARNYARD, 18 FEET E OF
 JU3484'THE CENTER LINE OF THE LANE LEADING TO THE HOUSE FROM THE PAVED
 JU3484'ROAD, 200 FEET S OF THE HOUSE.  MARK PROJECTS 4 INCHES.  IT IS A
 JU3484'NEW MARK STAMPED 1896-1934.
 JU3484'
 JU3484'TO REACH THE STATION FROM CENTERVILLE GO N ON HIGHWAY 213 0.5 MILE
 JU3484'TO A RIGHT FORK AND A SIGN (HOPE 5 MILES).  TURN RIGHT AND GO 4
 JU3484'MILES TO WHERE THE ROAD MAKES A SLIGHT LEFT TURN AT A FENCE CORNER.
 JU3484'THE STATION IS IN THE SE CORNER OF THE PASTURE.
 JU3484'
 JU3484'A 90-FOOT TOWER WAS USED AND CLEARED ALL LINES.
 JU3484'
 JU3484'NO CUT-INS VISIBLE FROM THE GROUND.
 JU3484
 JU3484                          STATION RECOVERY (1943)
 JU3484
 JU3484'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 JU3484'RECOVERED AS DESCRIBED EXCEPT FOR THE FOLLOWING DISCREPANCIES--
 JU3484'
 JU3484'STATION IS 35 FEET N OF CENTER LINE OF PAVED ROAD, NOT 40 FEET.
 JU3484'
 JU3484'R.M. 3 IS 65 FEET E OF CENTER LINE OF LANE, NOT 18 FEET.
 JU3484
 JU3484                          STATION RECOVERY (1963)
 JU3484
 JU3484'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (MSR)
 JU3484'AT THE REQUEST OF THE PROPERTY OWNER, THE STATION MARK WAS LOWERED 18
 JU3484'INCHES UNDERGROUND TO CLEAR PLOWING DEPTH.  R.M. 1 WAS RESET AS THE
 JU3484'N-S FENCE LINE IS BEING TORN OUT TO COMBINE THE 2 CULTIVATED
 JU3484'FIELDS.  R.M. 2 HAS BEEN DESTROYED.  THE 30-INCH MARBLE BLACK WAS
 JU3484'SET AS R.M. 5.
 JU3484'
 JU3484'THE 30-INCH MARBLE SURFACE MARKER WAS REFERENCED WITH STRADDLING HUBS
 JU3484'AND REMOVED TO CHECK ALIGNMENT WITH THE 18-INCH MARBLE UNDERGROUND
 JU3484'MARKER, HOWEVER, THE UNDERGROUND MARKER COULD NOT BE FOUND.  THE
 JU3484'HOLE WAS BELLED TO A DEPTH OF APPROXIMATELY 3 FEET AND PROBED AN
 JU3484'ADDITIONAL 18 TO 24 INCHES WITH A STEEL ROD.  THE DISTANCE TO
 JU3484'RM 1 AND THE ANGLE FROM THE AZIMUTH MARK TO R.M. 1 CHECKED THE
 JU3484'POSITION OF THE SURFACE MARK.  THERE IS NO OBVIOUS EXPLANATION
 JU3484'FOR THE MISSING MARKER.  A NEW DESCRIPTION FOLLOWS--
 JU3484'
 JU3484'STATION IS LOCATED 4.2 MILES E OF CENTREVILLE AND 7.0 MILES S OF
 JU3484'CHURCH HILL, 34.6 FEET N OF THE CENTER LINE OF MD. RT. 305, 37.2
 JU3484'FEET NE OF A POLE, 68.9 FEET NW OF A POLE AND 39.0 FEET NW OF A
 JU3484'FENCE CORNER POST.  THE MARK IS A STANDARD DISK SET IN CONCRETE 18
 JU3484'INCHES BELOW THE SURFACE OF THE GROUND AND STAMPED HOPE 1896 1963.
 JU3484'
 JU3484'R.M. 3 (AZIMUTH MARK) IS LOCATED 0.3 MILE N OF THE STATION, 1.0 FEET
 JU3484'W OF A N-S FENCE LINE AT BARN YARD, 65.0 FEET E OF THE CENTER LINE
 JU3484'OF THE FARM LANE, 200 FEET S OF THE FARM HOUSE.  A STANDARD DISK SET
 JU3484'IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES AND STAMPED 1896
 JU3484'1934.
 JU3484'
 JU3484'R.M. 4 IS 1.0 FEET N OF A E-W AFENCE LINE ON S SIDE OF MD. 305, 17.3
 JU3484'FEET S OF THE CENTER LINE OF MD 305, 1.7 FEET NW OF A TELEPHONE
 JU3484'POLE, 85.0 FEET NW OF R.M. 5 AND STAMPED HOPE NO 4 1963.
 JU3484'
 JU3484'R.M. 5 IS 16.0 FEET N OF THE CENTER LINE OF MD. 305, 1.2 FEET S OF A
 JU3484'POWER POLE, 85.8 FEET NW OF RM 4.  THE MARK IS A DRILL HOLE IN THE
 JU3484'CENTER OF A 6X6-INCH MARBLE POST PROJECTING 3 INCHES.
 JU3484'
 JU3484'TO REACH THE STATION FROM THE JUNCTION OF US 213 (COMMERCE ST.) AND
 JU3484'MD. 304 (WATER ST.) IN CENTREVILLE, PROCEED N ON US 213 FOR 0.5
 JU3484'MILE TO MD. 305 FORKING RIGHT, TURN RIGHT AND GO 2.9 MILES TO
 JU3484'JUNCTION U.S. 301 AND MD. 305, CONTINUE ON MD. 305 FOR 1.2 MILES
 JU3484'TO STATION ON LEFT AT A CURVE IN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2252 ***********************************************************************
 JV2252  DESIGNATION -  HOPE RM 1
 JV2252  PID         -  JV2252
 JV2252  STATE/COUNTY-  MD/FREDERICK
 JV2252  COUNTRY     -  US
 JV2252  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2252
 JV2252                         *CURRENT SURVEY CONTROL
 JV2252  ______________________________________________________________________
 JV2252* NAD 83(1986) POSITION- 39 20 46.96   (N) 077 23 22.10   (W)   HD_HELD1
 JV2252* NAVD 88 ORTHO HEIGHT -   142.355 (meters)      467.04  (feet) ADJUSTED
 JV2252  ______________________________________________________________________
 JV2252  GEOID HEIGHT    -        -32.510 (meters)                     GEOID18
 JV2252  DYNAMIC HEIGHT  -        142.278 (meters)      466.79  (feet) COMP
 JV2252  MODELED GRAVITY -    980,084.2   (mgal)                       NAVD 88
 JV2252
 JV2252  VERT ORDER      -  SECOND    CLASS 0
 JV2252
 JV2252.The horizontal coordinates were determined by differentially corrected
 JV2252.hand held GPS observations or other comparable positioning techniques
 JV2252.and have an estimated accuracy of +/- 3 meters.
 JV2252
 JV2252.The orthometric height was determined by differential leveling and
 JV2252.adjusted by the NATIONAL GEODETIC SURVEY
 JV2252.in June 1991.
 JV2252
 JV2252.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2252.GEOID18 height accuracy estimate available here.
 JV2252
 JV2252.Click photographs - Photos may exist for this station.
 JV2252
 JV2252.The dynamic height is computed by dividing the NAVD 88
 JV2252.geopotential number by the normal gravity value computed on the
 JV2252.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2252.degrees latitude (g = 980.6199 gals.).
 JV2252
 JV2252.The modeled gravity was interpolated from observed gravity values.
 JV2252
 JV2252;                    North         East    Units  Estimated Accuracy
 JV2252;SPC MD       -   186,530.9     366,427.2     MT  (+/- 3 meters HH1 GPS) 
 JV2252
 JV2252_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9409257938(NAD 83)
 JV2252
 JV2252                          SUPERSEDED SURVEY CONTROL
 JV2252
 JV2252  NGVD 29 (11/26/84)  142.569  (m)          467.75   (f) ADJUSTED    2 0
 JV2252
 JV2252.Superseded values are not recommended for survey control.
 JV2252
 JV2252.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2252.See file dsdata.pdf to determine how the superseded data were derived.
 JV2252
 JV2252_MARKER: DR = REFERENCE MARK DISK
 JV2252_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2252_STAMPING: HOPE NO 1 1958
 JV2252_MARK LOGO: CGS
 JV2252_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2252+STABILITY: SURFACE MOTION
 JV2252
 JV2252  HISTORY     - Date     Condition        Report By
 JV2252  HISTORY     - 1958     MONUMENTED       CGS
 JV2252
 JV2252                          STATION DESCRIPTION
 JV2252
 JV2252'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2252'5.3 MI SE FROM FREDERICK.
 JV2252'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 340 FROM THE INTERSECTION
 JV2252'OF U.S. HIGHWAY 40 (CITY ROUTE) AT FREDERICK, THENCE 4.7 MILES
 JV2252'SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT BANK, 39.4
 JV2252'FEET SOUTHEAST OF THE STATION AND SET IN THE TOP OF A CONCRETE
 JV2252'POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2250 ***********************************************************************
 JV2250  DESIGNATION -  HOPE RM 2
 JV2250  PID         -  JV2250
 JV2250  STATE/COUNTY-  MD/FREDERICK
 JV2250  COUNTRY     -  US
 JV2250  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2250
 JV2250                         *CURRENT SURVEY CONTROL
 JV2250  ______________________________________________________________________
 JV2250* NAD 83(1986) POSITION- 39 20 47.51   (N) 077 23 22.69   (W)   HD_HELD1
 JV2250* NAVD 88 ORTHO HEIGHT -   143.027 (meters)      469.25  (feet) ADJUSTED
 JV2250  ______________________________________________________________________
 JV2250  GEOID HEIGHT    -        -32.511 (meters)                     GEOID18
 JV2250  DYNAMIC HEIGHT  -        142.949 (meters)      468.99  (feet) COMP
 JV2250  MODELED GRAVITY -    980,084.2   (mgal)                       NAVD 88
 JV2250
 JV2250  VERT ORDER      -  SECOND    CLASS 0
 JV2250
 JV2250.The horizontal coordinates were determined by differentially corrected
 JV2250.hand held GPS observations or other comparable positioning techniques
 JV2250.and have an estimated accuracy of +/- 3 meters.
 JV2250
 JV2250.The orthometric height was determined by differential leveling and
 JV2250.adjusted by the NATIONAL GEODETIC SURVEY
 JV2250.in June 1991.
 JV2250
 JV2250.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2250.GEOID18 height accuracy estimate available here.
 JV2250
 JV2250.Click photographs - Photos may exist for this station.
 JV2250
 JV2250.The dynamic height is computed by dividing the NAVD 88
 JV2250.geopotential number by the normal gravity value computed on the
 JV2250.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2250.degrees latitude (g = 980.6199 gals.).
 JV2250
 JV2250.The modeled gravity was interpolated from observed gravity values.
 JV2250
 JV2250;                    North         East    Units  Estimated Accuracy
 JV2250;SPC MD       -   186,547.9     366,413.1     MT  (+/- 3 meters HH1 GPS) 
 JV2250
 JV2250_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9407857956(NAD 83)
 JV2250
 JV2250                          SUPERSEDED SURVEY CONTROL
 JV2250
 JV2250  NGVD 29 (11/26/84)  143.240  (m)          469.95   (f) ADJUSTED    2 0
 JV2250
 JV2250.Superseded values are not recommended for survey control.
 JV2250
 JV2250.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2250.See file dsdata.pdf to determine how the superseded data were derived.
 JV2250
 JV2250_MARKER: DR = REFERENCE MARK DISK
 JV2250_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2250_STAMPING: HOPE NO 2 1958
 JV2250_MARK LOGO: CGS
 JV2250_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2250+STABILITY: SURFACE MOTION
 JV2250
 JV2250  HISTORY     - Date     Condition        Report By
 JV2250  HISTORY     - 1958     MONUMENTED       CGS
 JV2250
 JV2250                          STATION DESCRIPTION
 JV2250
 JV2250'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2250'5.3 MI SE FROM FREDERICK.
 JV2250'ABOUT 0.6 MILE SOUTHWEST ALONG U.S. HIGHWAY 340 FROM THE INTERSECTION
 JV2250'OF U.S. HIGHWAY 40 (CITY ROUTE) AT FREDERICK, THENCE 4.7 MILES
 JV2250'SOUTHEAST ALONG U.S. HIGHWAY 240, ON THE TOP OF A CUT, 33.4
 JV2250'FEET NORTHWEST OF THE STATION, SET IN THE TOP OF A CONRETE POST
 JV2250'FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7195 ***********************************************************************
 HV7195  DESIGNATION -  HOPKINS
 HV7195  PID         -  HV7195
 HV7195  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7195  COUNTRY     -  US
 HV7195  USGS QUAD   -  DEALE (2016)
 HV7195
 HV7195                         *CURRENT SURVEY CONTROL
 HV7195  ______________________________________________________________________
 HV7195* NAD 83(1991) POSITION- 38 46 11.45439(N) 076 33 16.77966(W)   ADJUSTED
 HV7195* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7195  ______________________________________________________________________
 HV7195  GEOID HEIGHT    -        -33.521 (meters)                     GEOID18
 HV7195  LAPLACE CORR    -         -3.91  (seconds)                    DEFLEC18
 HV7195  HORZ ORDER      -  THIRD
 HV7195
 HV7195.The horizontal coordinates were established by classical geodetic methods
 HV7195.and adjusted by the National Geodetic Survey in January 1992.
 HV7195
 HV7195.The orthometric height was scaled from a topographic map.
 HV7195
 HV7195.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7195.GEOID18 height accuracy estimate available here.
 HV7195
 HV7195.Click photographs - Photos may exist for this station.
 HV7195
 HV7195.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7195
 HV7195. The following values were computed from the NAD 83(1991) position.
 HV7195
 HV7195;                    North         East     Units Scale Factor Converg.
 HV7195;SPC MD       -   122,551.990   438,700.752   MT  0.99995155   +0 16 46.2
 HV7195;SPC MD       -   402,072.65  1,439,304.05   sFT  0.99995155   +0 16 46.2
 HV7195;UTM  18      - 4,292,384.484   364,940.530   MT  0.99982462   -0 58 25.2
 HV7195
 HV7195!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7195!SPC MD       -   1.00000530  x   0.99995155  =   0.99995685
 HV7195!UTM  18      -   1.00000530  x   0.99982462  =   0.99982992
 HV7195
 HV7195:                Primary Azimuth Mark                     Grid Az
 HV7195:SPC MD       -  PARKER                                   075 28 19.0
 HV7195:UTM  18      -  PARKER                                   076 43 30.4
 HV7195
 HV7195_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6494092384(NAD 83)
 HV7195
 HV7195|---------------------------------------------------------------------|
 HV7195| PID    Reference Object                     Distance      Geod. Az  |
 HV7195|                                                           dddmmss.s |
 HV7195| HV7190 PARKER                              APPROX. 1.4 KM 0754505.2 |
 HV7195| CX2902 HOPKINS RM                            5.150 METERS 31313     |
 HV7195|---------------------------------------------------------------------|
 HV7195
 HV7195                          SUPERSEDED SURVEY CONTROL
 HV7195
 HV7195  NAD 83(1986)-  38 46 11.45205(N)    076 33 16.79214(W) AD(       ) 3
 HV7195  NAD 27      -  38 46 11.02900(N)    076 33 17.95100(W) AD(       ) 3
 HV7195  USSD        -  38 46 11.39800(N)    076 33 17.75900(W) AD(       ) 3
 HV7195
 HV7195.Superseded values are not recommended for survey control.
 HV7195
 HV7195.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7195.See file dsdata.pdf to determine how the superseded data were derived.
 HV7195
 HV7195_MARKER: N = NAIL
 HV7195_SETTING: 0 = UNSPECIFIED SETTING
 HV7195
 HV7195  HISTORY     - Date     Condition        Report By
 HV7195  HISTORY     - 1906     MONUMENTED       MDSFC
 HV7195
 HV7195                          STATION DESCRIPTION
 HV7195
 HV7195'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 HV7195'STATION IS ON THE N SIDE OF HERRING BAY, ON E SIDE OF ENTRANCE TO
 HV7195'HERRING CREEK, AND ABOUT 1-1/2 MILES N BY W OF FAIRHAVEN WHARF.
 HV7195'STATION IS 2 FEET ABOVE AND 15 FEET BACK FROM HIGH-WATER MARK,
 HV7195'AND IS NEARLY ON LINE WITH S FACE OF HOUSE STANDING JUST E OF THE
 HV7195'STATION.  CENTER MARKED BY NAIL IN STUB FLUSH WITH GROUND.
 HV7195'
 HV7195'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV7195'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV7195'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV7195'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. IT
 HV7195'IS 5.15 METERS (16.90 FEET) FROM THE STATION IN BEARING N 46 DEG
 HV7195'47 MIN W.  OTHER DISTANCES AND BEARINGS ARE AS FOLLOWS--CHIMNEY ON
 HV7195'SMALL HOUSE (OPPOSITE SHORE), 1/4 MILE, S 43 DEG 53 MIN W.  S
 HV7195'CHIMNEY ON WHITE HOUSE (OPPOSITE SHORE), 1/4 MILE, N 59 DEG 11
 HV7195'MIN W.  S CHIMNEY ON YELLOW HOUSE (OPPOSITE SHORE), 1/4 MILE, N 50
 HV7195'DEG 32 MIN W.  W CHIMNEY ON SMALL WHITE HOUSE, 150 YARDS, N 27
 HV7195'DEG 55 MIN W.  NW CORNER OF HOUSE, 16.39 METERS (53.8 FEET), N 19
 HV7195'DEG 47 MIN E.  SW CORNER OF HOUSE, 15.17 METERS (49.8 FEET), N 39
 HV7195'DEG 39 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6018 ***********************************************************************
 JV6018  DESIGNATION -  HOPKINS
 JV6018  PID         -  JV6018
 JV6018  STATE/COUNTY-  MD/HOWARD
 JV6018  COUNTRY     -  US
 JV6018  USGS QUAD   -  CLARKSVILLE (2016)
 JV6018
 JV6018                         *CURRENT SURVEY CONTROL
 JV6018  ______________________________________________________________________
 JV6018* NAD 83(2011) POSITION- 39 09 45.51970(N) 076 53 58.25256(W)   ADJUSTED
 JV6018* NAD 83(2011) ELLIP HT-   103.462 (meters)        (06/27/12)   ADJUSTED
 JV6018* NAD 83(2011) EPOCH   -  2010.00
 JV6018* NAVD 88 ORTHO HEIGHT -   135.6   (meters)      445.    (feet) VERTCON3
 JV6018  ______________________________________________________________________
 JV6018  GEOID HEIGHT    -        -32.118 (meters)                     GEOID18
 JV6018  NAD 83(2011) X  -  1,122,423.680 (meters)                     COMP
 JV6018  NAD 83(2011) Y  - -4,823,143.307 (meters)                     COMP
 JV6018  NAD 83(2011) Z  -  4,006,398.591 (meters)                     COMP
 JV6018  LAPLACE CORR    -         -3.96  (seconds)                    DEFLEC18
 JV6018
 JV6018  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6018  Standards:
 JV6018         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6018            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6018  -------------------------------------------------------------------
 JV6018  NETWORK    0.93   1.74           0.40   0.36   0.89      0.00581384
 JV6018  -------------------------------------------------------------------
 JV6018  Click here for local accuracies and other accuracy information.
 JV6018
 JV6018.The horizontal coordinates were established by GPS observations
 JV6018.and adjusted by the National Geodetic Survey in June 2012.
 JV6018
 JV6018.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6018.been affixed to the stable North American tectonic plate. See 
 JV6018.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6018
 JV6018.The horizontal coordinates are valid at the epoch date displayed above
 JV6018.which is a decimal equivalence of Year/Month/Day.
 JV6018
 JV6018.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6018.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6018
 JV6018.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6018.GEOID18 height accuracy estimate available here.
 JV6018
 JV6018.Click photographs - Photos may exist for this station.
 JV6018
 JV6018.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6018
 JV6018.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6018
 JV6018.The ellipsoidal height was determined by GPS observations
 JV6018.and is referenced to NAD 83.
 JV6018
 JV6018. The following values were computed from the NAD 83(2011) position.
 JV6018
 JV6018;                    North         East     Units Scale Factor Converg.
 JV6018;SPC MD       -   166,066.498   408,684.396   MT  0.99996235   +0 03 47.0
 JV6018;SPC MD       -   544,836.50  1,340,825.39   sFT  0.99996235   +0 03 47.0
 JV6018;UTM  18      - 4,336,543.984   335,888.778   MT  0.99993163   -1 11 59.5
 JV6018
 JV6018!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6018!SPC MD       -   0.99998377  x   0.99996235  =   0.99994612
 JV6018!UTM  18      -   0.99998377  x   0.99993163  =   0.99991540
 JV6018
 JV6018:                Primary Azimuth Mark                     Grid Az
 JV6018:SPC MD       -  HOPKINS AZ MK                            124 13 44.3
 JV6018:UTM  18      -  HOPKINS AZ MK                            125 29 30.8
 JV6018
 JV6018_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3588836543(NAD 83)
 JV6018
 JV6018|---------------------------------------------------------------------|
 JV6018| PID    Reference Object                     Distance      Geod. Az  |
 JV6018|                                                           dddmmss.s |
 JV6018| JV6699 HOPKINS RM 1                         17.639 METERS 07355     |
 JV6018| JV6701 HOPKINS AZ MK                                      1241731.3 |
 JV6018| JV6700 HOPKINS RM 2                         18.674 METERS 32418     |
 JV6018| JV6023 JOHN HOPKINS PHYSICS LAB TANK       216.021 METERS 33222     |
 JV6018|---------------------------------------------------------------------|
 JV6018
 JV6018                          SUPERSEDED SURVEY CONTROL
 JV6018
 JV6018  NAD 83(2007)-  39 09 45.51985(N)    076 53 58.25338(W) AD(2002.00) 0
 JV6018  ELLIP H (02/10/07)  103.493  (m)                       GP(2002.00)    
 JV6018  ELLIP H (08/30/02)  103.486  (m)                       GP(       ) 4 2
 JV6018  NAD 83(1991)-  39 09 45.51996(N)    076 53 58.25302(W) AD(       ) 1
 JV6018  NAD 83(1991)-  39 09 45.51885(N)    076 53 58.25362(W) AD(       ) 1
 JV6018  ELLIP H (01/27/92)  103.391  (m)                       GP(       ) 4 1
 JV6018  NAD 83(1986)-  39 09 45.51832(N)    076 53 58.26245(W) AD(       ) 1
 JV6018  NAD 27      -  39 09 45.13140(N)    076 53 59.35641(W) AD(       ) 1
 JV6018  NGVD 29 (07/19/86)  135.8    (m)          446.     (f) VERT ANG       
 JV6018
 JV6018.Superseded values are not recommended for survey control.
 JV6018
 JV6018.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6018.See file dsdata.pdf to determine how the superseded data were derived.
 JV6018
 JV6018_MARKER: DS = TRIANGULATION STATION DISK
 JV6018_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6018_STAMPING: HOPKINS 1966
 JV6018_MARK LOGO: CGS
 JV6018_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6018_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6018+STABILITY: SURFACE MOTION
 JV6018_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6018+SATELLITE: SATELLITE OBSERVATIONS - December 22, 2006
 JV6018
 JV6018  HISTORY     - Date     Condition        Report By
 JV6018  HISTORY     - 1966     MONUMENTED       CGS
 JV6018  HISTORY     - 1966     GOOD             CGS
 JV6018  HISTORY     - 19890613 GOOD
 JV6018  HISTORY     - 19900404 GOOD             WSSC
 JV6018  HISTORY     - 19901125 GOOD             MD-027
 JV6018  HISTORY     - 19920819 GOOD             USPSQD
 JV6018  HISTORY     - 20061222 GOOD             NGS
 JV6018
 JV6018                          STATION DESCRIPTION
 JV6018
 JV6018'DESCRIBED BY COAST AND GEODETIC SURVEY 1966 (LGB)
 JV6018'THE STATION IS LOCATED ON THE GROUNDS OF THE JOHN HOPKINS
 JV6018'UNIVERSITY, APPLIED PHYSICS LABORATORY ABOUT 5 MILES NORTHWEST
 JV6018'OF LAUREL, 1-1/4 MILES NORTH OF SKAGSVILLE, 0.6 MILE WEST OF
 JV6018'U.S. HIGHWAY 29 AND 0.1 MILE NORTH OF JOHN HOPKINS ROAD.
 JV6018'
 JV6018'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 29 AND
 JV6018'JOHN HOPKINS ROAD, ABOUT 4.5 MILES WEST OF LAUREL, GO WESTERLY
 JV6018'ON JOHN HOPKINS ROAD FOR 0.6 MILE TO A DRIVEWAY ON THE RIGHT.  TURN
 JV6018'RIGHT AND GO NORTH FOR 0.1 MILE TO A TRAFFIC CIRCLE IN FRONT OF
 JV6018'THE MAIN BUILDING OF THE UNIVERSITY AND THE STATION NEAR THE
 JV6018'SOUTH EDGE IN THE TRAFFIC CIRCLE.
 JV6018'
 JV6018'THE STATION MARK IS A STANDARD DISK STAMPED HOPKINS 1966, SET
 JV6018'IN TOP OF A ROUND CONCRETE MONUMENT 12 INCHES IN DIAMETER AND FLUSH
 JV6018'WITH THE SURFACE OF THE GROUND.  IT IS 95 FEET SOUTH OF THE CENTER
 JV6018'OF THE DOORS OF THE MAIN BUILDING, 53.5 FEET SOUTH OF THE NORTH
 JV6018'EDGE OF THE TRAFFIC CIRCLE AND 20 FEET NORTH OF THE SOUTH EDGE OF
 JV6018'THE TRAFFIC CIRCLE.
 JV6018'
 JV6018'REFERENCE MARK NO. 1 IS A STANDARD DISK STAMPED HOPKINS NO 1
 JV6018'1966, SET IN TOP OF A ROUND CONCRETE MONUMENT 12 INCHES IN
 JV6018'DIAMETER AND FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 90.5
 JV6018'FEET SOUTHEAST OF THE CENTER OF THE DOORS OF THE MAIN BUILDING AND
 JV6018'1 FOOT WEST OF THE EAST EDGE OF THE TRAFFIC CIRCLE.
 JV6018'
 JV6018'REFERENCE MARK NO. 2 IS A STANDARD DISK STAMPED HOPKINS NO 2
 JV6018'1966, SET IN TOP OF A ROUND CONCRETE MONUMENT 12 INCHES IN
 JV6018'DIAMETER AND FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 64 FEET
 JV6018'SOUTHWEST OF THE CENTER OF THE DOORS OF THE MAIN BUILDINGS AND
 JV6018'1 FOOT SOUTH OF THE NORTH EDGE OF THE TRAFFIC CIRCLE.
 JV6018'
 JV6018'AZIMUTH MARK IS A STANDARD DISK STAMPED HOPKINS 1966, SET IN
 JV6018'TOP OF A ROUND CONCRETE MONUMENT 12 INCHES IN DIAMETER THAT
 JV6018'PROJECTS 3 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 115
 JV6018'FEET NORTHEAST OF THE CENTER OF JOHN HOPKINS ROAD, 12 FEET
 JV6018'EAST-SOUTHEAST OF THE CENTER OF A DIRT ROAD, 8.5 FEET NORTHEAST
 JV6018'OF A POWER POLE AND 1.5 FEET SOUTHWEST OF A METAL WITNESS POST.
 JV6018'
 JV6018'TO REACH THE AZIMUTH MARK FROM THE STATION, GO SOUTH ON DRIVEWAY
 JV6018'FOR 0.1 MILE TO JOHN HOPKINS ROAD.  TURN LEFT AND GO EAST ON
 JV6018'JOHN HOPKINS ROAD FOR 0.25 MILE TO A DIRT ROAD ON THE LEFT AND
 JV6018'THE AZIMUTH MARK AS DESCRIBED ABOVE.
 JV6018'
 JV6018'HEIGHT OF LIGHT ABOVE STATION MARK 22.1 METERS.
 JV6018
 JV6018                          STATION RECOVERY (1966)
 JV6018
 JV6018'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966
 JV6018'RECOVERED IN GOOD CONDITION.
 JV6018
 JV6018                          STATION RECOVERY (1989)
 JV6018
 JV6018'RECOVERED 1989
 JV6018'RECOVERED IN GOOD CONDITION.
 JV6018
 JV6018                          STATION RECOVERY (1990)
 JV6018
 JV6018'RECOVERY NOTE BY WASH SUBURB SAN COMM 1990
 JV6018'THE STATION IS LOCATED ON THE GROUNDS OF THE JOHN HOPKINS UNIVERSITY
 JV6018'APPLIED PHYSICS LABORATORY, 8.05 KM (5.00 MI) NW OF LAUREL AND 2.01
 JV6018'KM (1.25 MI) N OF SCAGGSVILLE. TO REACH THE STATION FROM THE
 JV6018'INTERSECTION FO U.S. HIGHWAY 29 AND JOHN HOPKINS RD IN SCAGGSVILLE.
 JV6018'GO WEST ON JOHN HOPKINS RD FOR 0.97 KM (0.60 MI) TO A MACADAM DRIVE
 JV6018'ON THE RIGHT.  TURN RIGHT AND GO NORTH FOR 0.16 KM (0.10 MI) TO A
 JV6018'TRAFFIC CIRCLE IN FRONT OF THE MAIN BUILDING OF THE UNIVERSITY TO THE
 JV6018'STATION IN THE GRASS CIRCLE. OWNERSHIP--JOHN HOPKINS APPLIED PHYSICS
 JV6018'LABORATORY THE STATION MARK IS A CGS BRASS TRANGULATION DISK STAMPED
 JV6018'HOPKINS 1966 SET IN THE TOP OF A ROUND CONCRETE MONUMENT 0.31 M
 JV6018'(1.02 FT) IN DIAMETER RECESSED 0.5 M (1.6 FT) IN THE GRASS. IT IS
 JV6018'32.8 M (107.6 FT) NORTH OF THE CURB AND GUTTER ON THE SOUTH EDGE OF
 JV6018'THE CIRCLE. HOPKINS 1966 RM 1, HOPKINS 1966 RM 2, SERVE AS REFRENCE
 JV6018'MARKS FOR THIS STATION. STATION HOPKINS 1966 AZIMUTH MARK SERVES AS
 JV6018'AN AZIMUTH MARK FOR THIS STATION.
 JV6018
 JV6018                          STATION RECOVERY (1990)
 JV6018
 JV6018'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 1990
 JV6018'RECOVERED IN GOOD CONDITION.
 JV6018
 JV6018                          STATION RECOVERY (1992)
 JV6018
 JV6018'RECOVERY NOTE BY US POWER SQUADRON 1992 (DTH)
 JV6018'RECOVERED IN GOOD CONDITION.
 JV6018
 JV6018                          STATION RECOVERY (2006)
 JV6018
 JV6018'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2006 (DRD)
 JV6018'A BRICK WALKWAY HAS BEEN BUILT AROUND THE MARK.  AN ALUMINUM COVER IS
 JV6018'SCREWED IN PLACE THAT HAS BEEN STAMPED SURVEY MON. HOPKINS 1966.
 JV6018'STATION IS GPSABLE WITH SOME SMALL BLOCKAGES FROM FLAGPOLES TO THE
 JV6018'NORTH AND FROM EAST TO WEST ON THE SOUTH SIDE BY TREES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6335 ***********************************************************************
 HV6335  DESIGNATION -  HORN
 HV6335  PID         -  HV6335
 HV6335  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6335  COUNTRY     -  US
 HV6335  USGS QUAD   -  ANNAPOLIS (2016)
 HV6335
 HV6335                         *CURRENT SURVEY CONTROL
 HV6335  ______________________________________________________________________
 HV6335* NAD 83(1991) POSITION- 38 58 20.63393(N) 076 28 28.29819(W)   ADJUSTED
 HV6335* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6335  ______________________________________________________________________
 HV6335  GEOID HEIGHT    -        -33.382 (meters)                     GEOID18
 HV6335  LAPLACE CORR    -         -3.45  (seconds)                    DEFLEC18
 HV6335  HORZ ORDER      -  SECOND
 HV6335
 HV6335.The horizontal coordinates were established by classical geodetic methods
 HV6335.and adjusted by the National Geodetic Survey in January 1992.
 HV6335
 HV6335.The orthometric height was scaled from a topographic map.
 HV6335
 HV6335.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6335.GEOID18 height accuracy estimate available here.
 HV6335
 HV6335.Click photographs - Photos may exist for this station.
 HV6335
 HV6335.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6335
 HV6335. The following values were computed from the NAD 83(1991) position.
 HV6335
 HV6335;                    North         East     Units Scale Factor Converg.
 HV6335;SPC MD       -   145,073.203   445,535.022   MT  0.99995126   +0 19 47.3
 HV6335;SPC MD       -   475,961.00  1,461,726.15   sFT  0.99995126   +0 19 47.3
 HV6335;UTM  18      - 4,314,747.493   372,265.527   MT  0.99980091   -0 55 39.1
 HV6335
 HV6335!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6335!SPC MD       -   1.00000496  x   0.99995126  =   0.99995622
 HV6335!UTM  18      -   1.00000496  x   0.99980091  =   0.99980587
 HV6335
 HV6335:                Primary Azimuth Mark                     Grid Az
 HV6335:SPC MD       -  ANNAPOLIS NAVAL ACAD NW MAST             046 35 26.8
 HV6335:UTM  18      -  ANNAPOLIS NAVAL ACAD NW MAST             047 50 53.2
 HV6335
 HV6335_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7226514747(NAD 83)
 HV6335
 HV6335|---------------------------------------------------------------------|
 HV6335| PID    Reference Object                     Distance      Geod. Az  |
 HV6335|                                                           dddmmss.s |
 HV6335| HV6396 ANNAPOLIS NAVAL ACAD NW MAST        APPROX. 2.6 KM 0465514.1 |
 HV6335| CX2646 COR OF LG HOUSE                                    23249     |
 HV6335| CX2998 LOCUST TREE                                        34559     |
 HV6335|---------------------------------------------------------------------|
 HV6335
 HV6335                          SUPERSEDED SURVEY CONTROL
 HV6335
 HV6335  NAD 83(1986)-  38 58 20.63014(N)    076 28 28.30964(W) AD(       ) 2
 HV6335  NAD 27      -  38 58 20.22900(N)    076 28 29.45300(W) AD(       ) 2
 HV6335  USSD        -  38 58 20.59000(N)    076 28 29.27900(W) AD(       ) 3
 HV6335
 HV6335.Superseded values are not recommended for survey control.
 HV6335
 HV6335.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6335.See file dsdata.pdf to determine how the superseded data were derived.
 HV6335
 HV6335_MARKER: U = CONCRETE POST
 HV6335_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 HV6335_SP_SET: OBJECT DRIVEN INTO GROUND
 HV6335
 HV6335  HISTORY     - Date     Condition        Report By
 HV6335  HISTORY     - 1910     MONUMENTED       MDSFC
 HV6335  HISTORY     - 1932     GOOD             CGS
 HV6335  HISTORY     - 1945     GOOD             LOCENG
 HV6335  HISTORY     - 1954     GOOD             CGS
 HV6335  HISTORY     - 1956     GOOD             CGS
 HV6335  HISTORY     - 1973     SEE DESCRIPTION  MDDNR
 HV6335  HISTORY     - 1978     SEE DESCRIPTION  NGS
 HV6335  HISTORY     - 19981218 MARK NOT FOUND   USPSQD
 HV6335
 HV6335                          STATION DESCRIPTION
 HV6335
 HV6335'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (OWF)
 HV6335'IN EASTPORT, 930 METERS SE OF THE SEA WALL IN FRONT OF THE NAVAL
 HV6335'ACADEMY, 550 METERS ABOVE THE MOUTH OF BACK CREEK, ON THE CREST OF
 HV6335'HIGH RECEDING BANK, JUST OUTSIDE OF THE LIMIT OF CULTIVATION AND
 HV6335'OPPOSITE A BROAD BENCH IN BANK.  STATION MARKED BY A HOLE IN THE
 HV6335'CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV6335'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV6335'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S.
 HV6335'ARE COUNTERSUNK IN TOP OF POST.  THE SUBSURFACE MARK IS A NOZZLE
 HV6335'OF A BOTTLE.  REFERENCE MARK IS THE NE CORNER OF CONCRETE
 HV6335'FOUNDATION OF LARGE NEW DWELLING HOUSE, DISTANT 46.17 METERS
 HV6335'(151.5 FEET), S 52 DEG 49 MIN W.  ANOTHER POINT OF
 HV6335'REFERENCE IS CENTER OF TRIANGULAR BLAZE IN 8-INCH LOCUST TREE
 HV6335'ON SLOPE OF BANK, DISTANT 7.59 METERS (24.90 FEET),
 HV6335'N 14 DEG 01 MIN W.
 HV6335
 HV6335                          STATION RECOVERY (1932)
 HV6335
 HV6335'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6335'STATION MARK RECOVERED IN GOOD CONDITION AS DESCRIBED.  THE 8-INCH
 HV6335'TREE WITH A BLAZE WAS NOT LOCATED.
 HV6335
 HV6335                          STATION RECOVERY (1945)
 HV6335
 HV6335'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1945
 HV6335'RECOVERED BY JE GREINER C.
 HV6335'
 HV6335'STATION AND REFERENCES RECOVERED AS DESCRIBED.  HORN 1910 USED IN
 HV6335'NEW TRIANGULATION SEVERN RIVER AND CARRS CREEK.
 HV6335
 HV6335                          STATION RECOVERY (1954)
 HV6335
 HV6335'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (EHK)
 HV6335'STATION WAS RECOVERED AS DESCRIBED IN GOOD CONDITION.  THE
 HV6335'DESCRIPTION SHOULD INCLUDE THE FOLLOWING--
 HV6335'
 HV6335'STATION IS ON THE PROPERTY OF LINWOOD L. CLARK, 35.0 FT. NW OF
 HV6335'THE CENTERLINE OF THE EXTREME END OF EASTERN AVENUE, 11.0 FT. SW OF
 HV6335'A 14-IN. IN DIAMETER LOCUST TREE, AND 20.0 FT. NW OF THE CONCRETE
 HV6335'STEPS LEADING TO THE BASE OF THE BLUFF.
 HV6335
 HV6335                          STATION RECOVERY (1956)
 HV6335
 HV6335'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (ELJ)
 HV6335'STATION RECOVERED IN GOOD CONDITION.
 HV6335'
 HV6335'DISCREPANCIES WITH THE 1910 DESCRIPTION ARE AS FOLLOWS--(1) THE
 HV6335'STATION MARK IS NOW FLUSH WITH THE LAWN AT THE STATION SITE
 HV6335'INSTEAD OF EXTENDING 4 IN. ABOVE GROUND.  THERE IS NO CULTIVATION
 HV6335'AT THE STATION SITE.  (2) THE 8-IN. LOCUST TREE WITH A TRIANGULAR
 HV6335'BLAZE, AND ON THE SLOPE OF A BANK 24.9 FT. FROM THE STATION HAS
 HV6335'BEEN DESTROYED.
 HV6335'
 HV6335'DISCREPANCIES WITH THE 1954 RECOVERY NOTE ARE AS FOLLOWS--(1) THE
 HV6335'STATION IS 42.5 FT. NW FROM THE CENTERLINE OF THE EXTREME END OF
 HV6335'EASTERN AVENUE INSTEAD OF 35.0 FT. AS DESCRIBED.  (2) THE
 HV6335'14-IN. LOCUST TREE IS 18 IN. IN DIAMETER.  (3) THE STATION IS 27
 HV6335'FT. SW OF THE TOP OF THE CONCRETE STEPS LEADING TO THE BASE OF
 HV6335'THE BLUFF INSTEAD OF 20 FT. NW.
 HV6335'
 HV6335'A COMPLETE NEW DESCRIPTION IS AS FOLLOWS--
 HV6335'
 HV6335'ON THE S SIDE OF THE SEVERN RIVER IN EASTPORT, AT THE NORTHEAST
 HV6335'END OF EASTERN AVENUE AND ON HORN POINT.  THE STATION IS 90.7
 HV6335'FT. INSHORE FROM A WOOD BULKHEAD, 100 FT. SW FROM THE EXTREME NE
 HV6335'TIP OF BULKHEADED HORN POINT, 42.5 FT. NW OF END OF EASTERN
 HV6335'AVENUE, 58 FT. W OF THE NW CORNER OF A SMALL HOUSE, 151 FT. NE
 HV6335'FROM THE NE CORNER OF A LARGE HOUSE DESCRIBED IN 1910, 27 FT. SW
 HV6335'OF THE TOP OF THE CONCRETE STEPS LEADING TO THE BASE OF A BLUFF,
 HV6335'AND 11 FT. S OF AN 18-IN. LOCUST TREE ON THE TOP AND AT THE EDGE
 HV6335'OF A BLUFF.  THE STATION IS MARKED BY A HOLE IN THE CENTER OF
 HV6335'THE TOP OF AN 8-IN. SQUARE CONCRETE POST WITH THE LETTERS
 HV6335'MSFC (MARYLAND SHELL FISH COMMISSION) AND USCS PRECAST IN THE
 HV6335'TOP OF THE MONUMENT.  ACCORDING TO THE 1910
 HV6335'DESCRIPTION THE SUBSURFACE MARK IS A NOZZLE OF A BOTTLE.
 HV6335
 HV6335                          STATION RECOVERY (1973)
 HV6335
 HV6335'RECOVERY NOTE BY MD DEPT OF NAT RES 1973
 HV6335'STATION MARK DESTROYED BY APARTMENT BUILDING CONSTRUCTION.  FOREMAN
 HV6335'STATED THAT HE HAD TALKED WITH MR. NOVAK, U.S.C.S., WHO GAVE HIM
 HV6335'PERMISSION TO DESTROY STATION.  MONUMENT IS ON PORCH OF
 HV6335'CONSTRUCTION OFFICE AND SHOULD BE CLASSIFIED AS DESTROYED.
 HV6335
 HV6335                          STATION RECOVERY (1978)
 HV6335
 HV6335'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (CLN)
 HV6335'EXTENSIVE CONSTRUCTION HAS TAKEN PLACE IN THE AREA AND THE MARK WAS
 HV6335'DESTROYED DURING THE CONSTRUCTION.  THERE IS A LARGE APARTMENT
 HV6335'BUILDING ON THE SPOT WHERE THE STATION WAS LOCATED AND THE
 HV6335'CONTRACTOR REMOVED THE MONUMENT DURING ITS CONSTRUCTION.
 HV6335'
 HV6335'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN THE SOUTH PART
 HV6335'OF ANNAPOLIS.
 HV6335
 HV6335                          STATION RECOVERY (1998)
 HV6335
 HV6335'RECOVERY NOTE BY US POWER SQUADRON 1998
 HV6335'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5778 ***********************************************************************
 JV5778  DESIGNATION -  HORN
 JV5778  PID         -  JV5778
 JV5778  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5778  COUNTRY     -  US
 JV5778  USGS QUAD   -  ROUND BAY (2016)
 JV5778
 JV5778                         *CURRENT SURVEY CONTROL
 JV5778  ______________________________________________________________________
 JV5778* NAD 83(1991) POSITION- 39 04 52.62387(N) 076 31 01.99681(W)   ADJUSTED
 JV5778* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5778  ______________________________________________________________________
 JV5778  GEOID HEIGHT    -        -33.145 (meters)                     GEOID18
 JV5778  LAPLACE CORR    -         -3.71  (seconds)                    DEFLEC18
 JV5778  HORZ ORDER      -  THIRD
 JV5778
 JV5778.The horizontal coordinates were established by classical geodetic methods
 JV5778.and adjusted by the National Geodetic Survey in January 1992.
 JV5778
 JV5778.The orthometric height was scaled from a topographic map.
 JV5778
 JV5778.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5778.GEOID18 height accuracy estimate available here.
 JV5778
 JV5778.Click photographs - Photos may exist for this station.
 JV5778
 JV5778.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5778
 JV5778. The following values were computed from the NAD 83(1991) position.
 JV5778
 JV5778;                    North         East     Units Scale Factor Converg.
 JV5778;SPC MD       -   157,140.139   441,771.465   MT  0.99995626   +0 18 10.8
 JV5778;SPC MD       -   515,550.61  1,449,378.55   sFT  0.99995626   +0 18 10.8
 JV5778;UTM  18      - 4,326,892.390   368,768.414   MT  0.99981206   -0 57 23.9
 JV5778
 JV5778!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5778!SPC MD       -   1.00000477  x   0.99995626  =   0.99996103
 JV5778!UTM  18      -   1.00000477  x   0.99981206  =   0.99981683
 JV5778
 JV5778:                Primary Azimuth Mark                     Grid Az
 JV5778:SPC MD       -  HOOF                                     332 21 33.5
 JV5778:UTM  18      -  HOOF                                     333 37 08.2
 JV5778
 JV5778_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6876826892(NAD 83)
 JV5778
 JV5778|---------------------------------------------------------------------|
 JV5778| PID    Reference Object                     Distance      Geod. Az  |
 JV5778|                                                           dddmmss.s |
 JV5778| JV5780 HOOF                                456.140 METERS 3323944.3 |
 JV5778|---------------------------------------------------------------------|
 JV5778
 JV5778                          SUPERSEDED SURVEY CONTROL
 JV5778
 JV5778  NAD 83(1986)-  39 04 52.62007(N)    076 31 02.00721(W) AD(       ) 3
 JV5778  NAD 27      -  39 04 52.18600(N)    076 31 03.04400(W) AD(       ) 3
 JV5778  USSD        -  39 04 52.56400(N)    076 31 02.95700(W) AD(       ) 3
 JV5778
 JV5778.Superseded values are not recommended for survey control.
 JV5778
 JV5778.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5778.See file dsdata.pdf to determine how the superseded data were derived.
 JV5778
 JV5778_MARK LOGO: CGS
 JV5778
 JV5778  HISTORY     - Date     Condition        Report By
 JV5778  HISTORY     - 1898     MONUMENTED       CGS
 JV5778  HISTORY     - 1906     GOOD             CGS
 JV5778  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5778
 JV5778                          STATION DESCRIPTION
 JV5778
 JV5778'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5778'STATION IS ON THE S SHORE OF THE UPPER MAGOTHY RIVER, ABOUT 1/2
 JV5778'MILE SE OF MOUTH OF CATTAIL CREEK AND 1/2 MILE N OF CYPRESS CREEK,
 JV5778'ON THE E SIDE OF DEEP POINT, ABOUT 2 FEET ABOVE AND 10 FEET BACK
 JV5778'FROM HIGH-WATER MARK.  SLOPE OF BANK BEGINS AT STATION AND RISES
 JV5778'TO AN ELEVATION OF 20 FEET AND IS COVERED WITH WOODS.  A PILE OF
 JV5778'STONE SURROUNDS THE STATION.  STATION MARK IS NAIL IN WOODEN
 JV5778'STUB WITH TOP 3 INCHES BELOW SURFACE OF GROUND.  REFERENCE MARK
 JV5778'IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5778'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5778'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 JV5778'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 JV5778'TOP OF POST.  IT IS 4.51 METERS (14.80 FEET) FROM STATION
 JV5778'S 9 DEG 47 MIN E.  DISTANCES AND BEARINGS TO
 JV5778'OTHER POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN BLAZE IN
 JV5778'FORKED TREE, 5.21 METERS (17.09 FEET), S 26 DEG 32 MIN W.
 JV5778'CHIMNEY OF WHITE HOUSE ACROSS RIVER, 1/2 MILE, N 23 DEG 09 MIN E.
 JV5778'WHITE HOUSE NEAR MOUTH OF DIVIDING CREEK, 3/4 MILE, S 13
 JV5778'DEG 41 MIN E.  NAIL IN BLAZE IN 4-INCH TREE, 7.82 METERS (25.66
 JV5778'FEET), S 2 DEG 37 MIN E.
 JV5778
 JV5778                          STATION RECOVERY (1933)
 JV5778
 JV5778'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5778'STATION WAS LOCATED ON THE E SIDE OF DEEP POINT, NOW THE PROPERTY
 JV5778'OF CHARLES F. HENDERSON, SINCE 1903.  OWNER SAYS THAT THE
 JV5778'MARYLAND SHELL FISH SURVEY STANDARD CEMENT MONUMENT WAS IN
 JV5778'SIGHT, ON THE BEACH, UNTIL THE STORMS OF THIS YEAR.  A RETAINING
 JV5778'WALL HAD BEEN BUILT AROUND THE POINT, BUT THE LAST STORM WASHED
 JV5778'IT AWAY AND UNDERMINED THE BANK SO THAT IT CAVED.  ONLY 1
 JV5778'REFERENCE, BLAZE IN A 4-INCH TREE 7.82 METERS (25.66 FEET), S 3
 JV5778'DEG E, COULD BE FOUND, AND IT IS UNDERMINED AND WILL SOON BE
 JV5778'LOST.  USING THIS REFERENCE AND AZIMUTHS AND DISTANCES GIVEN
 JV5778'IN MARYLAND TRIANGULATION, STATION AND REFERENCE MONUMENT
 JV5778'LOCATIONS WERE ESTABLISHED AND EXCAVATION MADE TO HIGH-WATER
 JV5778'LEVEL.  NEITHER THE STATION, MARKED BY A WOODEN HUB, NOR THE
 JV5778'REFERENCE WERE FOUND.  THEY HAVE BEEN CARRIED AWAY, AS WAS
 JV5778'THE PILE OF STONES WHICH SURROUNDED THE STATION.  THE BLUFF
 JV5778'NOW RUNS ALMOST STRAIGHT DOWN TO THE BEACH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5907 ***********************************************************************
 HV5907  DESIGNATION -  HORN 1900
 HV5907  PID         -  HV5907
 HV5907  STATE/COUNTY-  MD/DORCHESTER
 HV5907  COUNTRY     -  US
 HV5907  USGS QUAD   -  CHURCH CREEK (2016)
 HV5907
 HV5907                         *CURRENT SURVEY CONTROL
 HV5907  ______________________________________________________________________
 HV5907* NAD 83(1991) POSITION- 38 36 20.99425(N) 076 08 27.29534(W)   ADJUSTED
 HV5907* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5907  ______________________________________________________________________
 HV5907  GEOID HEIGHT    -        -34.848 (meters)                     GEOID18
 HV5907  LAPLACE CORR    -         -3.76  (seconds)                    DEFLEC18
 HV5907  HORZ ORDER      -  THIRD
 HV5907
 HV5907.The horizontal coordinates were established by classical geodetic methods
 HV5907.and adjusted by the National Geodetic Survey in January 1992.
 HV5907
 HV5907.The orthometric height was scaled from a topographic map.
 HV5907
 HV5907.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5907.GEOID18 height accuracy estimate available here.
 HV5907
 HV5907.Click photographs - Photos may exist for this station.
 HV5907
 HV5907.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5907
 HV5907. The following values were computed from the NAD 83(1991) position.
 HV5907
 HV5907;                    North         East     Units Scale Factor Converg.
 HV5907;SPC MD       -   104,603.069   474,826.515   MT  0.99996089   +0 32 21.1
 HV5907;SPC MD       -   343,185.24  1,557,826.66   sFT  0.99996089   +0 32 21.1
 HV5907;UTM  18      - 4,273,653.976   400,658.876   MT  0.99972153   -0 42 43.0
 HV5907
 HV5907!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5907!SPC MD       -   1.00000550  x   0.99996089  =   0.99996639
 HV5907!UTM  18      -   1.00000550  x   0.99972153  =   0.99972703
 HV5907
 HV5907:                Primary Azimuth Mark                     Grid Az
 HV5907:SPC MD       -  HAVEN                                    315 42 20.1
 HV5907:UTM  18      -  HAVEN                                    316 57 24.2
 HV5907
 HV5907_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0065873653(NAD 83)
 HV5907
 HV5907|---------------------------------------------------------------------|
 HV5907| PID    Reference Object                     Distance      Geod. Az  |
 HV5907|                                                           dddmmss.s |
 HV5907| HV6040 HAVEN                               APPROX. 3.6 KM 3161441.2 |
 HV5907|---------------------------------------------------------------------|
 HV5907
 HV5907                          SUPERSEDED SURVEY CONTROL
 HV5907
 HV5907  NAD 83(1986)-  38 36 20.99137(N)    076 08 27.31179(W) AD(       ) 3
 HV5907  NAD 27      -  38 36 20.55700(N)    076 08 28.53600(W) AD(       ) 3
 HV5907  USSD        -  38 36 20.95000(N)    076 08 28.33900(W) AD(       ) 3
 HV5907
 HV5907.Superseded values are not recommended for survey control.
 HV5907
 HV5907.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5907.See file dsdata.pdf to determine how the superseded data were derived.
 HV5907
 HV5907
 HV5907  HISTORY     - Date     Condition        Report By
 HV5907  HISTORY     - 1900     MONUMENTED       CGS
 HV5907  HISTORY     - 1902     GOOD             CGS
 HV5907
 HV5907                          STATION DESCRIPTION
 HV5907
 HV5907'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 HV5907'ON SOUTHERN SHORE OF CHOPTANK RIVER, AT EASTERN SIDE OF LECOMPTES
 HV5907'BAY, ON NW CORNER OF HORN POINT, IN WOODS, 13.9 METERS (45.6 FEET)
 HV5907'W BY N OF BLAZED GUM TREE, AND 4 METERS FROM N BANK.  MARKED BY A
 HV5907'4-INCH TILE PIPE WITH TOP JUST BELOW SURFACE OF GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AI3494 ***********************************************************************
 AI3494  HT_MOD      -  This is a Height Modernization Survey Station.
 AI3494  CORS        -  This is a GPS Continuously Operating Reference Station.
 AI3494  DESIGNATION -  HORN POINT ENVIRO CORS ARP
 AI3494  CORS_ID     -  HNPT
 AI3494  PID         -  AI3494
 AI3494  STATE/COUNTY-  MD/DORCHESTER
 AI3494  COUNTRY     -  US
 AI3494  USGS QUAD   -  CHURCH CREEK (2016)
 AI3494
 AI3494                         *CURRENT SURVEY CONTROL
 AI3494  ______________________________________________________________________
 AI3494* NAD 83(2011) POSITION- 38 35 19.70944(N) 076 07 49.33366(W)   ADJUSTED
 AI3494* NAD 83(2011) ELLIP HT-   -26.679 (meters)        (12/??/25)   ADJUSTED
 AI3494* NAD 83(2011) EPOCH   -  2010.00
 AI3494* NAVD 88 ORTHO HEIGHT -     8.23  (meters)       27.0   (feet) GPS OBS
 AI3494  ______________________________________________________________________
 AI3494  GEOID HEIGHT    -        -34.900 (meters)                     GEOID18
 AI3494  NAD 83(2011) X  -  1,196,626.987 (meters)                     COMP
 AI3494  NAD 83(2011) Y  - -4,846,359.976 (meters)                     COMP
 AI3494  NAD 83(2011) Z  -  3,956,723.190 (meters)                     COMP
 AI3494
 AI3494.Formal positional accuracy estimates are not available for this CORS
 AI3494.because its coordinates were determined in part using modeled velocities.
 AI3494.A time-series residual plot is available that shows daily coordinate
 AI3494.variations relative to the published coordinates and modeled velocities.
 AI3494.Large residuals may indicate a potential error in the modeled velocities.
 AI3494
 AI3494.Residual plot at:
 AI3494.https://geodesy.noaa.gov/CORS/ncn_station_pages/index.html?stationID=HNPT.
 AI3494
 AI3494.The coordinates were established by GPS observations
 AI3494.and adjusted by the National Geodetic Survey in December 2025.
 AI3494
 AI3494.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AI3494.been affixed to the stable North American Tectonic Plate. 
 AI3494
 AI3494.The coordinates are valid at the epoch date displayed above
 AI3494.which is a decimal equivalence of Year/Month/Day.
 AI3494
 AI3494.NGS completed the third reprocessing of daily RINEX data from 1996 to 2022
 AI3494.for all stations in the NOAA CORS Network (NCN).  The reprocessed solution,
 AI3494.known as the Multi-Year CORS Solution 3 (MYCS3), is aligned with the
 AI3494.ITFR2020 global frame, epoch 2020.00.  The resulting MYCS3 coordinates
 AI3494.were then transformed to NAD83(2011/MA11/PA11), maintaining the currently
 AI3494.published epoch of 2010.00.
 AI3494
 AI3494.Additional information on MYCS is available at:
 AI3494.https://geodesy.noaa.gov/CORS/index.shtml
 AI3494
 AI3494.The orthometric height was determined by GPS observations and a
 AI3494.high-resolution geoid model using precise GPS observation and
 AI3494.processing techniques.
 AI3494
 AI3494.Significant digits in the geoid height do not necessarily reflect accuracy.
 AI3494.GEOID18 height accuracy estimate available here.
 AI3494
 AI3494.The PID for the CORS L1 Phase Center is DI8696.
 AI3494
 AI3494.Click photographs - Photos may exist for this station.
 AI3494
 AI3494.The XYZ, and position/ellipsoidal ht. are equivalent.
 AI3494
 AI3494.The ellipsoidal height was determined by GPS observations
 AI3494.and is referenced to NAD 83.
 AI3494
 AI3494. The following values were computed from the NAD 83(2011) position.
 AI3494
 AI3494;                    North         East     Units Scale Factor Converg.
 AI3494;SPC MD       -   102,722.176   475,762.953   MT  0.99996232   +0 32 44.9
 AI3494;SPC MD       -   337,014.34  1,560,898.95   sFT  0.99996232   +0 32 44.9
 AI3494;UTM  18      - 4,271,753.545   401,553.810   MT  0.99971935   -0 42 18.4
 AI3494
 AI3494!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AI3494!SPC MD       -   1.00000419  x   0.99996232  =   0.99996651
 AI3494!UTM  18      -   1.00000419  x   0.99971935  =   0.99972353
 AI3494
 AI3494_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0155371753(NAD 83)
 AI3494
 AI3494                          SUPERSEDED SURVEY CONTROL
 AI3494
 AI3494  NAD 83(2011)-  38 35 19.70995(N)    076 07 49.33202(W) AD(2010.00) c
 AI3494  ELLIP H (04/??/25)  -26.671  (m)                       GP(2010.00) c c
 AI3494  NAD 83(2011)-  38 35 19.71006(N)    076 07 49.33198(W) AD(2010.00) c
 AI3494  ELLIP H (06/??/19)  -26.670  (m)                       GP(2010.00) c c
 AI3494  NAD 83(2011)-  38 35 19.71022(N)    076 07 49.33188(W) AD(2010.00) c
 AI3494  NAD 83(2011)-  38 35 19.71004(N)    076 07 49.33190(W) AD(2010.00) c
 AI3494  ELLIP H (08/??/11)  -26.674  (m)                       GP(2010.00) c c
 AI3494  NAD 83(2007)-  38 35 19.71067(N)    076 07 49.33296(W) AD(2002.00) c
 AI3494  NAD 83(CORS)-  38 35 19.71067(N)    076 07 49.33296(W) AD(2002.00) c
 AI3494  ELLIP H (03/??/02)  -26.645  (m)                       GP(2002.00) c c
 AI3494  NAD 83(CORS)-  38 35 19.71008(N)    076 07 49.33310(W) AD(1997.00) c
 AI3494  ELLIP H (01/??/00)  -26.640  (m)                       GP(1997.00) c c
 AI3494
 AI3494.Superseded values are not recommended for survey control.
 AI3494
 AI3494.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AI3494.See file dsdata.pdf to determine how the superseded data were derived.
 AI3494
 AI3494_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 AI3494
 AI3494                          STATION DESCRIPTION
 AI3494
 AI3494'DESCRIBED BY NATIONAL GEODETIC SURVEY 2025
 AI3494'THIS STATION IS PART OF THE NOAA CORS NETWORK (NCN).  LATEST INFORMATION
 AI3494'INCLUDING POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE
 AI3494'AND LOG FILES ACCESSIBLE AT:
 AI3494'https://geodesy.noaa.gov/CORS/index.shtml
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5104 ***********************************************************************
 JV5104  DESIGNATION -  HORNOR
 JV5104  PID         -  JV5104
 JV5104  STATE/COUNTY-  MD/KENT
 JV5104  COUNTRY     -  US
 JV5104  USGS QUAD   -  ROCK HALL (2016)
 JV5104
 JV5104                         *CURRENT SURVEY CONTROL
 JV5104  ______________________________________________________________________
 JV5104* NAD 83(1991) POSITION- 39 07 59.63785(N) 076 10 11.66381(W)   ADJUSTED
 JV5104* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5104  ______________________________________________________________________
 JV5104  GEOID HEIGHT    -        -33.438 (meters)                     GEOID18
 JV5104  LAPLACE CORR    -         -2.06  (seconds)                    DEFLEC18
 JV5104  HORZ ORDER      -  THIRD
 JV5104
 JV5104.The horizontal coordinates were established by classical geodetic methods
 JV5104.and adjusted by the National Geodetic Survey in January 1992.
 JV5104
 JV5104.The orthometric height was scaled from a topographic map.
 JV5104
 JV5104.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5104.GEOID18 height accuracy estimate available here.
 JV5104
 JV5104.Click photographs - Photos may exist for this station.
 JV5104
 JV5104.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5104
 JV5104. The following values were computed from the NAD 83(1991) position.
 JV5104
 JV5104;                    North         East     Units Scale Factor Converg.
 JV5104;SPC MD       -   163,122.920   471,769.088   MT  0.99995991   +0 31 15.6
 JV5104;SPC MD       -   535,179.11  1,547,795.75   sFT  0.99995991   +0 31 15.6
 JV5104;UTM  18      - 4,332,213.309   398,884.550   MT  0.99972589   -0 44 18.3
 JV5104
 JV5104!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5104!SPC MD       -   1.00000528  x   0.99995991  =   0.99996519
 JV5104!UTM  18      -   1.00000528  x   0.99972589  =   0.99973117
 JV5104
 JV5104:                Primary Azimuth Mark                     Grid Az
 JV5104:SPC MD       -  WEST                                     326 46 05.0
 JV5104:UTM  18      -  WEST                                     328 01 38.9
 JV5104
 JV5104_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9888432213(NAD 83)
 JV5104
 JV5104|---------------------------------------------------------------------|
 JV5104| PID    Reference Object                     Distance      Geod. Az  |
 JV5104|                                                           dddmmss.s |
 JV5104| JV5109 EAGLE                               482.540 METERS 2640940.3 |
 JV5104| JV5110 WEST                                451.805 METERS 3271720.6 |
 JV5104|---------------------------------------------------------------------|
 JV5104
 JV5104                          SUPERSEDED SURVEY CONTROL
 JV5104
 JV5104  NAD 83(1986)-  39 07 59.63231(N)    076 10 11.67532(W) AD(       ) 3
 JV5104  NAD 27      -  39 07 59.23700(N)    076 10 12.84900(W) AD(       ) 3
 JV5104  USSD        -  39 07 59.64000(N)    076 10 12.67300(W) AD(       ) 3
 JV5104
 JV5104.Superseded values are not recommended for survey control.
 JV5104
 JV5104.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5104.See file dsdata.pdf to determine how the superseded data were derived.
 JV5104
 JV5104_MARKER: H = DRILL HOLE
 JV5104_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5104_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5104+STABILITY: SURFACE MOTION
 JV5104
 JV5104  HISTORY     - Date     Condition        Report By
 JV5104  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5104  HISTORY     - 1941     POOR             CGS
 JV5104  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5104
 JV5104                          STATION DESCRIPTION
 JV5104
 JV5104'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5104'STATION IS ON THE EASTERN SHORE OF WEST FORK OF LANGFORD CREEK,
 JV5104'ON POINT BETWEEN LONG COVE AND HORNORS COVE, ABOUT 3/4 MILE N
 JV5104'OF MAIN BODY OF LANGFORD CREEK, IN A MARSH MEADOW, ABOUT 1 FOOT
 JV5104'ABOVE HIGH WATER, 15 YARDS NE OF SHORE, AND 30 YARDS S OF FRINGE
 JV5104'OF WOODS PARALLEL WITH SHORE.
 JV5104'
 JV5104'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5104'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5104'POST 2 FEET LONG, WITH TOP PROJECTING 6 INCHES.  THE LETTERS
 JV5104'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5104'MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED WITH THE TOP
 JV5104'2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5104'
 JV5104'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5104'FOLLOWS--CHIMNEY OF HOUSE, 3/8 MILE, S 78 DEG 05 MIN W.  W CHIMNEY OF
 JV5104'DE FORDS HOUSE, 5/8 MILE, N 75 DEG 11 MIN W. S CHIMNEY OF HOUSE,
 JV5104'1-1/4 MILES, N 66 DEG 48 MIN W. N CHIMNEY OF HOUSE, 1-1/2 MILES,
 JV5104'N 55 DEG 10 MIN W. LEFT EDGE OF SMALL HOUSE, 1 MILE, S 33 DEG 11
 JV5104'MIN E.  RIGHT TANGENT OF CACAWAY ISLAND, 3/4 MILE, S 13 DEG 56 MIN E.
 JV5104
 JV5104                          STATION RECOVERY (1941)
 JV5104
 JV5104'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5104'STATION FOUND IN POOR SHAPE.  TOP HAS BEEN FROZEN AND MONUMENT
 JV5104'DISINTEGRATED.  IT WAS FOUND BY GUY STAKES FROM A PREVIOUS
 JV5104'SIGNAL.  NO ATTEMPT WAS MADE TO DETERMINE THE CONDITION OF THE
 JV5104'SUBSURFACE MARK.
 JV5104'
 JV5104'DESCRIPTION SHOULD NOW READ--LOCATED ON MARSH MEADOW N OF HORNOR
 JV5104'COVE, 9.2 METERS NE OF HIGH-WATER LINE, 27.3 METERS S OF MARSH
 JV5104'BUSHES AND 27.6 METERS NW OF NAILS IN BLAZE IN SMALL PIN OAK, ON
 JV5104'EDGE OF MARSH WHERE FIELD MAKES A SLIGHT CUTBACK.
 JV5104'
 JV5104'TO REACH STATION FROM CHESTERTOWN TAKE ROCK HALL ROAD TO SIDE
 JV5104'ROAD TO LANGFORD, GO DOWN SIDE ROAD TO FLETCHERS STORE.  TURN LEFT
 JV5104'TO FARM.  FROM HOUSE TAKE FIELD ROAD TO S FIELD.  STATION IS
 JV5104'LOCATED ABOUT 50 METERS SE OF FENCE.
 JV5104
 JV5104                          STATION RECOVERY (1961)
 JV5104
 JV5104'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5104'STATION NOT RECOVERED AFTER A CAREFUL SEARCH.  IT HAS EITHER BEEN
 JV5104'DESTROYED BY EROSION OR HAS DISINTERGRATED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1444 ***********************************************************************
 HU1444  DESIGNATION -  HORSE
 HU1444  PID         -  HU1444
 HU1444  STATE/COUNTY-  MD/WORCESTER
 HU1444  COUNTRY     -  US
 HU1444  USGS QUAD   -  ASSAWOMAN BAY (2016)
 HU1444
 HU1444                         *CURRENT SURVEY CONTROL
 HU1444  ______________________________________________________________________
 HU1444* NAD 83(1991) POSITION- 38 25 11.11316(N) 075 03 17.35558(W)   ADJUSTED
 HU1444* NAVD 88 ORTHO HEIGHT -     4.    (meters)       13.    (feet) SCALED
 HU1444  ______________________________________________________________________
 HU1444  GEOID HEIGHT    -        -35.964 (meters)                     GEOID18
 HU1444  LAPLACE CORR    -         -0.80  (seconds)                    DEFLEC18
 HU1444  HORZ ORDER      -  THIRD
 HU1444
 HU1444.The horizontal coordinates were established by classical geodetic methods
 HU1444.and adjusted by the National Geodetic Survey in January 1992.
 HU1444
 HU1444.The orthometric height was scaled from a topographic map.
 HU1444
 HU1444.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1444.GEOID18 height accuracy estimate available here.
 HU1444
 HU1444.Click photographs - Photos may exist for this station.
 HU1444
 HU1444.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1444
 HU1444. The following values were computed from the NAD 83(1991) position.
 HU1444
 HU1444;                    North         East     Units Scale Factor Converg.
 HU1444;SPC MD       -    85,405.488   569,855.412   MT  0.99998133   +1 13 15.1
 HU1444;SPC MD       -   280,201.17  1,869,600.63   sFT  0.99998133   +1 13 15.1
 HU1444;UTM  18      - 4,252,390.651   495,214.427   MT  0.99960028   -0 02 02.6
 HU1444
 HU1444!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1444!SPC MD       -   1.00000505  x   0.99998133  =   0.99998638
 HU1444!UTM  18      -   1.00000505  x   0.99960028  =   0.99960533
 HU1444
 HU1444:                Primary Azimuth Mark                     Grid Az
 HU1444:SPC MD       -  ISLE OF WIGHT LIFE SAV STA TWR           190 40 50.1
 HU1444:UTM  18      -  ISLE OF WIGHT LIFE SAV STA TWR           191 56 07.8
 HU1444
 HU1444_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9521452390(NAD 83)
 HU1444
 HU1444|---------------------------------------------------------------------|
 HU1444| PID    Reference Object                     Distance      Geod. Az  |
 HU1444|                                                           dddmmss.s |
 HU1444| HU1448 ISLE OF WIGHT LIFE SAV STA TWR      APPROX. 1.9 KM 1915405.2 |
 HU1444|---------------------------------------------------------------------|
 HU1444
 HU1444                          SUPERSEDED SURVEY CONTROL
 HU1444
 HU1444  NAD 83(1986)-  38 25 11.09456(N)    075 03 17.38065(W) AD(       ) 3
 HU1444  NAD 27      -  38 25 10.68832(N)    075 03 18.72895(W) AD(       ) 3
 HU1444
 HU1444.Superseded values are not recommended for survey control.
 HU1444
 HU1444.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1444.See file dsdata.pdf to determine how the superseded data were derived.
 HU1444
 HU1444_MARKER: DS = TRIANGULATION STATION DISK
 HU1444_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HU1444_STAMPING: HORSE 1929
 HU1444_MARK LOGO: CGS
 HU1444_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1444
 HU1444  HISTORY     - Date     Condition        Report By
 HU1444  HISTORY     - 1929     MONUMENTED       CGS
 HU1444  HISTORY     - 1932     GOOD             CGS
 HU1444  HISTORY     - 1932     GOOD             CGS
 HU1444  HISTORY     - 1934     GOOD             CGS
 HU1444  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1444  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1444  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU1444
 HU1444                          STATION DESCRIPTION
 HU1444
 HU1444'DESCRIBED BY COAST AND GEODETIC SURVEY 1929 (CFE)
 HU1444'ON A PROMINENT SAND DUNE APPROXIMATELY 1 MILE N OF THE ISLE OF
 HU1444'WIGHT COAST GUARD STATION.  THE STATION IS SITUATED ON THE OUTER
 HU1444'LINE OF DUNES AND IS MARKED WITH A STANDARD DISK SET IN THE TOP
 HU1444'OF A 6-INCH TERRA-COTTA PIPE FILLED WITH CONCRETE PLACED IN THE
 HU1444'GROUND.  TWO REFERENCE MARKS OF SIMILAR CONSTRUCTION WERE PLACED
 HU1444'NEAR THE STATION.  A LARGE TRIPOD SIGNAL WAS BUILT OVER THE
 HU1444'STATION.  THERE IS NOTHING DEFINITE IN THE IMMEDIATE LOCALITY
 HU1444'BY WHICH THE SITE CAN BE IDENTIFIED.  THE STATION CAN BEST BE
 HU1444'LOCATED BY ANGLES TO OTHER STATIONS.
 HU1444
 HU1444                          STATION RECOVERY (1932)
 HU1444
 HU1444'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (ERM)
 HU1444'STATION AND REFERENCES RECOVERED IN GOOD CONDITION.
 HU1444'
 HU1444'TO REACH IT, GO N ON DIRT ROAD, BY ISLE OF WIGHT COAST
 HU1444'GUARD STATION.
 HU1444
 HU1444                          STATION RECOVERY (1932)
 HU1444
 HU1444'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (CDM)
 HU1444'STATION MARK AND TWO REFERENCE MARKS FOUND IN GOOD CONDITION.  ALL
 HU1444'STAMPED HORSE 1929-1932.  STATION AND REFERENCE MARKS ARE STANDARD
 HU1444'DISKS SET IN 6-INCH TILE PIPE FILLED WITH CEMENT.
 HU1444'
 HU1444'NO SEARCH WAS MADE FOR A SUB-SURFACE MARK.
 HU1444
 HU1444                          STATION RECOVERY (1934)
 HU1444
 HU1444'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCT)
 HU1444'STATION AND REFERENCE MARKS NO. 1 AND NO. 2 RECOVERED IN GOOD
 HU1444'CONDITION.  THE ORIGINAL DESCRIPTION IS ADEQUATE EXCEPT THAT NO
 HU1444'DISTANCES AND DIRECTIONS TO THE REFERENCE MARKS ARE LISTED.
 HU1444
 HU1444                          STATION RECOVERY (1942)
 HU1444
 HU1444'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1444'THE STATION WAS SEARCHED FOR THOROUGHLY BUT WAS NOT FOUND.  THE
 HU1444'SHIFTING NATURE OF THE SAND AND THE LACK OF ADEQUATE TIES MAY
 HU1444'ACCOUNT FOR LACK OF RESULTS.  IT IS RECOMMENDED THAT THIS STATION
 HU1444'BE CLASSIFIED AS LOST.
 HU1444
 HU1444                          STATION RECOVERY (1962)
 HU1444
 HU1444'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (WMR)
 HU1444'LOST.  THE AREA WAS SEARCHED BUT THE STATION COULD NOT BE
 HU1444'FOUND.  STATION ALSO REPORTED LOST BY W.D.P. IN 1942.
 HU1444
 HU1444                          STATION RECOVERY (2003)
 HU1444
 HU1444'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU1444'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6778 ***********************************************************************
 JV6778  DESIGNATION -  HORSE
 JV6778  PID         -  JV6778
 JV6778  STATE/COUNTY-  MD/HARFORD
 JV6778  COUNTRY     -  US
 JV6778  USGS QUAD   -  BEL AIR (2016)
 JV6778
 JV6778                         *CURRENT SURVEY CONTROL
 JV6778  ______________________________________________________________________
 JV6778* NAD 83(2011) POSITION- 39 31 37.31251(N) 076 22 13.21106(W)   ADJUSTED
 JV6778* NAD 83(2011) ELLIP HT-    46.594 (meters)        (06/27/12)   ADJUSTED
 JV6778* NAD 83(2011) EPOCH   -  2010.00
 JV6778* NAVD 88 ORTHO HEIGHT -    79.3   (meters)      260.    (feet) VERTCON3
 JV6778  ______________________________________________________________________
 JV6778  GEOID HEIGHT    -        -32.758 (meters)                     GEOID18
 JV6778  NAD 83(2011) X  -  1,160,867.020 (meters)                     COMP
 JV6778  NAD 83(2011) Y  - -4,787,602.518 (meters)                     COMP
 JV6778  NAD 83(2011) Z  -  4,037,648.487 (meters)                     COMP
 JV6778  LAPLACE CORR    -         -3.70  (seconds)                    DEFLEC18
 JV6778
 JV6778  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6778  Standards:
 JV6778         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6778            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6778  -------------------------------------------------------------------
 JV6778  NETWORK    1.54   3.23           0.69   0.49   1.65      0.51528162
 JV6778  -------------------------------------------------------------------
 JV6778  Click here for local accuracies and other accuracy information.
 JV6778
 JV6778.The horizontal coordinates were established by GPS observations
 JV6778.and adjusted by the National Geodetic Survey in June 2012.
 JV6778
 JV6778.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6778.been affixed to the stable North American tectonic plate. See 
 JV6778.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6778
 JV6778.The horizontal coordinates are valid at the epoch date displayed above
 JV6778.which is a decimal equivalence of Year/Month/Day.
 JV6778
 JV6778.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6778.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6778
 JV6778.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6778.GEOID18 height accuracy estimate available here.
 JV6778
 JV6778.Click photographs - Photos may exist for this station.
 JV6778
 JV6778.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6778
 JV6778.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6778
 JV6778.The ellipsoidal height was determined by GPS observations
 JV6778.and is referenced to NAD 83.
 JV6778
 JV6778. The following values were computed from the NAD 83(2011) position.
 JV6778
 JV6778;                    North         East     Units Scale Factor Converg.
 JV6778;SPC MD       -   206,702.811   454,138.883   MT  1.00001438   +0 23 42.7
 JV6778;SPC MD       -   678,157.47  1,489,953.99   sFT  1.00001438   +0 23 42.7
 JV6778;UTM  18      - 4,376,160.936   382,223.321   MT  0.99977078   -0 52 20.1
 JV6778
 JV6778!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6778!SPC MD       -   0.99999269  x   1.00001438  =   1.00000707
 JV6778!UTM  18      -   0.99999269  x   0.99977078  =   0.99976347
 JV6778
 JV6778_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ8222376160(NAD 83)
 JV6778
 JV6778                          SUPERSEDED SURVEY CONTROL
 JV6778
 JV6778  NAD 83(2007)-  39 31 37.31267(N)    076 22 13.21190(W) AD(2002.00) 0
 JV6778  ELLIP H (02/10/07)   46.616  (m)                       GP(2002.00)    
 JV6778  ELLIP H (09/18/02)   46.617  (m)                       GP(       ) 4 2
 JV6778  NAD 83(1991)-  39 31 37.31278(N)    076 22 13.21085(W) AD(       ) 1
 JV6778  ELLIP H (01/27/92)   46.590  (m)                       GP(       ) 4 1
 JV6778  NAD 83(1986)-  39 31 37.30636(N)    076 22 13.21848(W) AD(       ) 1
 JV6778  NGVD 29 (06/18/91)   79.6    (m)  UNKNOWN  model used  GPS OBS        
 JV6778
 JV6778.Superseded values are not recommended for survey control.
 JV6778
 JV6778.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6778.See file dsdata.pdf to determine how the superseded data were derived.
 JV6778
 JV6778_MARKER: DD = SURVEY DISK
 JV6778_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6778_STAMPING: 135 HORSE 1989
 JV6778_MARK LOGO: MD-025
 JV6778_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6778_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6778+STABILITY: SURFACE MOTION
 JV6778_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6778+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6778
 JV6778  HISTORY     - Date     Condition        Report By
 JV6778  HISTORY     - 1989     MONUMENTED       RDA
 JV6778  HISTORY     - 20011210 GOOD             NGS
 JV6778
 JV6778                          STATION DESCRIPTION
 JV6778
 JV6778'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6778'THE STATION IS LOCATED IN SOUTH CENTRAL HARFORD COUNTY, MARYLAND ABOUT
 JV6778'0.3 MILES WEST OF THE TOWN OF BEL AIR ON TOLL GATE ROAD.
 JV6778'TO REACH THE STATION FROM THE INTERSECTION OF FEDERAL BUSINESS HIGHWAY
 JV6778'1 AND STATE HIGHWAY 24 PROCEED SOUTHWEST ALONG HIGHWAY 1 0.2 MILES TO
 JV6778'ITS INTERSECTION WITH TOLL GATE ROAD.  TURN RIGHT AND PROCEED
 JV6778'NORTHWEST ALONG TOLL GATE ROAD 0.8 MILES TO AN EQUESTRIAN CENTER AND
 JV6778'THE STATION ON THE LEFT.
 JV6778'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6778'ABOUT 1 INCH BELOW GROUND STAMPED 135 HORSE 1989.  THE STATION IS 69.3
 JV6778'FEET NORTHWEST FROM B G AND E POLE NUMBER 252572, 9.0 FEET SOUTHEAST
 JV6778'FROM B G AND E POLE NUMBER 110879, 17.2 FEET SOUTHWEST FROM A UTILITY
 JV6778'POLE WITH NO NUMBER AND 24 YARDS SOUTHWEST FROM THE CENTERLINE OF TOLL
 JV6778'GATE ROAD.
 JV6778
 JV6778                          STATION RECOVERY (2001)
 JV6778
 JV6778'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 JV6778'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1446 ***********************************************************************
 HU1446  DESIGNATION -  HORSE 2
 HU1446  PID         -  HU1446
 HU1446  STATE/COUNTY-  MD/WORCESTER
 HU1446  COUNTRY     -  US
 HU1446  USGS QUAD   -  ASSAWOMAN BAY (2016)
 HU1446
 HU1446                         *CURRENT SURVEY CONTROL
 HU1446  ______________________________________________________________________
 HU1446* NAD 83(1991) POSITION- 38 25 00.91930(N) 075 03 21.01094(W)   ADJUSTED
 HU1446* NAVD 88 ORTHO HEIGHT -     7.1   (meters)       23.    (feet) VERTCON3
 HU1446  ______________________________________________________________________
 HU1446  GEOID HEIGHT    -        -35.967 (meters)                     GEOID18
 HU1446  LAPLACE CORR    -         -0.80  (seconds)                    DEFLEC18
 HU1446  HORZ ORDER      -  SECOND
 HU1446
 HU1446.The horizontal coordinates were established by classical geodetic methods
 HU1446.and adjusted by the National Geodetic Survey in January 1992.
 HU1446
 HU1446.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1446.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1446
 HU1446.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1446.GEOID18 height accuracy estimate available here.
 HU1446
 HU1446.Click photographs - Photos may exist for this station.
 HU1446
 HU1446.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1446
 HU1446. The following values were computed from the NAD 83(1991) position.
 HU1446
 HU1446;                    North         East     Units Scale Factor Converg.
 HU1446;SPC MD       -    85,089.353   569,773.455   MT  0.99998172   +1 13 12.8
 HU1446;SPC MD       -   279,163.99  1,869,331.74   sFT  0.99998172   +1 13 12.8
 HU1446;UTM  18      - 4,252,076.507   495,125.600   MT  0.99960029   -0 02 04.9
 HU1446
 HU1446!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1446!SPC MD       -   1.00000454  x   0.99998172  =   0.99998626
 HU1446!UTM  18      -   1.00000454  x   0.99960029  =   0.99960482
 HU1446
 HU1446:                Primary Azimuth Mark                     Grid Az
 HU1446:SPC MD       -  X 103                                    196 11 49.2
 HU1446:UTM  18      -  X 103                                    197 27 06.9
 HU1446
 HU1446_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9512552076(NAD 83)
 HU1446
 HU1446|---------------------------------------------------------------------|
 HU1446| PID    Reference Object                     Distance      Geod. Az  |
 HU1446|                                                           dddmmss.s |
 HU1446| DC7401 HORSE 2 RM 3                          8.528 METERS 12011     |
 HU1446| HU0374 X 103                                              1972502.0 |
 HU1446| DC7402 HORSE 2 RM 4                          6.703 METERS 24154     |
 HU1446|---------------------------------------------------------------------|
 HU1446
 HU1446                          SUPERSEDED SURVEY CONTROL
 HU1446
 HU1446  NAD 83(1986)-  38 25 00.90065(N)    075 03 21.03614(W) AD(       ) 2
 HU1446  NAD 27      -  38 25 00.49231(N)    075 03 22.38319(W) AD(       ) 2
 HU1446  NGVD 29 (07/19/86)    7.3    (m)           24.     (f) VERT ANG       
 HU1446
 HU1446.Superseded values are not recommended for survey control.
 HU1446
 HU1446.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1446.See file dsdata.pdf to determine how the superseded data were derived.
 HU1446
 HU1446_MARKER: DS = TRIANGULATION STATION DISK
 HU1446_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1446_STAMPING: HORSE 2 1966
 HU1446_MARK LOGO: CGS
 HU1446_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1446+STABILITY: SURFACE MOTION
 HU1446
 HU1446  HISTORY     - Date     Condition        Report By
 HU1446  HISTORY     - 1962     MONUMENTED       CGS
 HU1446  HISTORY     - 1975     MARK NOT FOUND   NGS
 HU1446  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU1446  HISTORY     - 20080915 MARK NOT FOUND   GEOCAC
 HU1446
 HU1446                          STATION DESCRIPTION
 HU1446
 HU1446'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1446'THE STATION IS LOCATED ABOUT 5-1/2 MILES NORTH-NORTHEAST OF OCEAN
 HU1446'CITY, MARYLAND, 2-1/2 MILES SOUTH OF FENWICK ISLAND LIGHT HOUSE.  ON
 HU1446'A PROMINENT SAND DUNE AND ON PROPERTY OWNED BY MR. EMIL DUPONT WHO
 HU1446'GAVE PERMISSION.
 HU1446'
 HU1446'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 50 AND
 HU1446'STATE HIGHWAY 528 AT THE CORNER OF BALTIMORE AVENUE AND CAROLINE
 HU1446'STREET IN OCEAN CITY, MARYLAND, GO NORTHERLY ON STATE HIGHWAY
 HU1446'528 FOR 5.5 MILES TO THE AZIMUTH MARK ON THE RIGHT, CONTINUE
 HU1446'STRAIGHT AHEAD ON HIGHWAY 528 FOR 0.5 MILES TO MR. DUPONTS
 HU1446'DRIVEWAY ON THE RIGHT, TURN RIGHT AND GO EASTERLY UP DRIVEWAY FOR
 HU1446'0.05 MILE TO THE END OF TRUCK TRAVEL.  HERE PACK LEFT ACROSS SAND
 HU1446'DUNE TO THE HIGHEST POINT AND THE STATION.
 HU1446'
 HU1446'STATION IS A STANDARD DISK SET IN THE TOP OF A 12 X 12 INCH
 HU1446'CONCRETE MONUMENT WHICH PROJECTS ABOUT 6 INCHES ABOVE THE SURFACE
 HU1446'OF THE GROUND, STAMPED HORSE 2 1962.  IT IS 72.8 FEET SOUTH OF A
 HU1446'NEW EAST-WEST SAND DUNE FENCE AND 12.0 FEET SOUTH-SOUTHWEST OF A
 HU1446'STANDARD METAL WITNESS POST AND MARKER.
 HU1446'
 HU1446'REFERENCE MARK 3 IS A STANDARD DISK SET IN THE TOP OF A 12 X 12
 HU1446'INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 12 INCHES ABOVE THE
 HU1446'SURFACE OF THE GROUND, STAMPED HORSE 2 NO 3 1962.  IT IS 67.0 FEET
 HU1446'SOUTH OF A NEW EAST-WEST SAND DUNE FENCE, 30.0 FEET
 HU1446'SOUTH-SOUTHEAST OF A STANDARD METAL WITNESS POST AND MARKER AND
 HU1446'17.4 FEET WEST OF A NEW NORTH-SOUTH SAND DUNE FENCE.
 HU1446'
 HU1446'REFERENCE MARK 4 IS A STANDARD DISK SET IN THE TOP OF A 12 X 12
 HU1446'INCH CONCRETE MONUMENT WHICH PROJECTS ABOUT 8 INCHES ABOVE THE
 HU1446'SURFACE OF THE GROUND, STAMPED HORSE 2 NO 4 1962.  IT IS 81.7
 HU1446'FEET SOUTH OF A NEW EAST-WEST SAND DUNE FENCE AND 32.9 FEET
 HU1446'WEST-SOUTHWEST OF A STANDARD METAL WITNESS POST AND MARKER.
 HU1446'
 HU1446'AZIMUTH MARK IS A STANDARD BENCH MARK DISK SET IN THE TOP OF
 HU1446'8-INCH CORRUGATED PIPE WHICH PROJECTS ABOUT 2 INCHES ABOVE THE
 HU1446'SURFACE OF THE GROUND, STAMPED X 103 1962.  IT IS 68.0 FEET EAST
 HU1446'OF THE APPROXIMATE CENTERLINE OF STATE HIGHWAY 528, 2.8 FEET
 HU1446'NORTH OF POWERLINE POLE 114 AND 2.4 FEET SOUTH OF A WHITE STEEL
 HU1446'FENCE POST.
 HU1446'
 HU1446'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 HU1446
 HU1446                          STATION RECOVERY (1975)
 HU1446
 HU1446'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (EAB)
 HU1446'A SEARCH WAS MADE FOR THIS STATION SITE AND NO EVIDENCE OF ANY
 HU1446'OF THE MARKS WERE FOUND.  THIS AREA NOW CONSISTS ONLY OF LARGE
 HU1446'NEWLY CONSTRUCTED MOTELS, HOTELS AND TOWNHOUSES.  I WOULD JUDGE
 HU1446'THAT THIS STATION IS DESTROYED.
 HU1446'
 HU1446'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1446'IN THE NORTH PART OF OCEAN CITY MARYLAND.
 HU1446
 HU1446                          STATION RECOVERY (2003)
 HU1446
 HU1446'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU1446'MARK NOT FOUND.
 HU1446
 HU1446                          STATION RECOVERY (2008)
 HU1446
 HU1446'RECOVERY NOTE BY GEOCACHING 2008 (EK)
 HU1446'STATION LOCATION IS IN A PARKING AREA NEAR A LARGE HOTEL - NO EVIDENCE
 HU1446'REMAINS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 FW1352 ***********************************************************************
 FW1352  DESIGNATION -  HORSE HAMMOCK
 FW1352  PID         -  FW1352
 FW1352  STATE/COUNTY-  MD/SOMERSET
 FW1352  COUNTRY     -  US
 FW1352  USGS QUAD   -  GREAT FOX ISLAND (2019)
 FW1352
 FW1352                         *CURRENT SURVEY CONTROL
 FW1352  ______________________________________________________________________
 FW1352* NAD 83(1993) POSITION- 37 57 12.21336(N) 075 59 36.74685(W)   ADJUSTED
 FW1352* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 FW1352  ______________________________________________________________________
 FW1352  GEOID HEIGHT    -        -36.029 (meters)                     GEOID18
 FW1352  LAPLACE CORR    -         -1.37  (seconds)                    DEFLEC18
 FW1352  HORZ ORDER      -  THIRD
 FW1352
 FW1352.The horizontal coordinates were established by classical geodetic methods
 FW1352.and adjusted by the National Geodetic Survey in November 1994.
 FW1352
 FW1352.The orthometric height was scaled from a topographic map.
 FW1352
 FW1352.Significant digits in the geoid height do not necessarily reflect accuracy.
 FW1352.GEOID18 height accuracy estimate available here.
 FW1352
 FW1352.Click photographs - Photos may exist for this station.
 FW1352
 FW1352.The Laplace correction was computed from DEFLEC18 derived deflections.
 FW1352
 FW1352. The following values were computed from the NAD 83(1993) position.
 FW1352
 FW1352;                    North         East     Units Scale Factor Converg.
 FW1352;SPC MD       -    32,316.078   488,460.846   MT  1.00007835   +0 37 54.1
 FW1352;SPC MD       -   106,023.67  1,602,558.63   sFT  1.00007835   +0 37 54.1
 FW1352;UTM  18      - 4,201,109.325   412,713.519   MT  0.99969384   -0 36 39.9
 FW1352
 FW1352!             -  Elev Factor  x  Scale Factor =   Combined Factor
 FW1352!SPC MD       -   1.00000571  x   1.00007835  =   1.00008406
 FW1352!UTM  18      -   1.00000571  x   0.99969384  =   0.99969955
 FW1352
 FW1352:                Primary Azimuth Mark                     Grid Az
 FW1352:SPC MD       -  CRISFIELD TALL BLACK STACK               074 49 41.7
 FW1352:UTM  18      -  CRISFIELD TALL BLACK STACK               076 04 15.7
 FW1352
 FW1352_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1271301109(NAD 83)
 FW1352
 FW1352|---------------------------------------------------------------------|
 FW1352| PID    Reference Object                     Distance      Geod. Az  |
 FW1352|                                                           dddmmss.s |
 FW1352| FW1327 CRISFIELD TALL BLACK STACK          APPROX.11.7 KM 0752735.8 |
 FW1352| FW1322 CRISFIELD STANDPIPE                 APPROX.13.5 KM 0754808.7 |
 FW1352| FW1357 SOMERS COVE STACK                   APPROX. 9.4 KM 0782336.8 |
 FW1352| FW1361 GREAT POINT LIGHT                   APPROX. 8.2 KM 0801945.3 |
 FW1352|---------------------------------------------------------------------|
 FW1352
 FW1352                          SUPERSEDED SURVEY CONTROL
 FW1352
 FW1352  NAD 83(1991)-  37 57 12.21477(N)    075 59 36.75381(W) AD(       ) 3
 FW1352  NAD 83(1986)-  37 57 12.21389(N)    075 59 36.77075(W) AD(       ) 3
 FW1352  NAD 27      -  37 57 11.75900(N)    075 59 38.00100(W) AD(       ) 3
 FW1352  USSD        -  37 57 12.13000(N)    075 59 37.75400(W) AD(       ) 3
 FW1352
 FW1352.Superseded values are not recommended for survey control.
 FW1352
 FW1352.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 FW1352.See file dsdata.pdf to determine how the superseded data were derived.
 FW1352
 FW1352_MARKER: K = CLAY TILE PIPE
 FW1352_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 FW1352_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 FW1352
 FW1352  HISTORY     - Date     Condition        Report By
 FW1352  HISTORY     - 1898     MONUMENTED       MDSFC
 FW1352  HISTORY     - 1916     SEE DESCRIPTION  CGS
 FW1352
 FW1352                          STATION DESCRIPTION
 FW1352
 FW1352'DESCRIBED BY COAST AND GEODETIC SURVEY 1916 (JBB)
 FW1352'STATION IS ON THE EASTERN SHORE OF SMITH ISLAND, ON HORSE
 FW1352'HAMMOCK, N OF THE ENTRANCE TO TYLERS CREEK.  IT MARKS AN
 FW1352'ANGLE OF THE STATE BOUNDARY LINE.  IT WAS ORIGINALLY MARKED
 FW1352'BY A TERRA-COTTA PIPE SET IN CEMENT, BUT IN 1916 THIS PIPE
 FW1352'WAS FOUND WASHED OUT AND FALLEN OVER.  THE POINT WAS REPRODUCED
 FW1352'BY MEASURING 276 FEET FROM THE GRANITE POST LOCATED ON THE
 FW1352'LINE ACROSS SMITH ISLAND BY CAPTAIN F.V. ABBOT, UNITED STATES
 FW1352'ARMY, IN 1883.  BACK RANGE OF 1898, A TERRA-COTTA PIPE
 FW1352'SET IN CEMENT, IN 55.6 FEET N OF THE GRANITE POST ABOVE
 FW1352'MENTIONED.  IT FORMS WITH HORSE HAMMOCK A RANGE FOR
 FW1352'DETERMINING POINT A OF THE BOUNDARY IN TANGIER SOUND N 79 DEG
 FW1352'28 MIN W.  THE POINT REPRODUCED AND
 FW1352'CHECKED BY TRIANGULATION WAS RE-MARKED IN 1916 BY A RAILROAD RAIL
 FW1352'30 FEET LONG, SET ABOUT HALF ITS LENGTH IN THE GROUND AND
 FW1352'ENCASED IN CONCRETE TO ABOVE WATER LEVEL.  IT CARRIED A
 FW1352'TARGET ON TOP, 6 FEET ON A SIDE.  THE STATION IS IN
 FW1352'ABOUT 1-1/2 FEET OF WATER AT HIGH WATER AND ABOUT 100
 FW1352'FEET OUTSIDE HIGH-WATER MARK.  REFERENCE MARK FOR STATION HORSE,
 FW1352'1907, A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 FW1352'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 FW1352'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 FW1352'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 FW1352'COUNTER-SUNK IN TOP OF POST.  IT IS 28.36 METERS (93.0 FEET)
 FW1352'FROM THE STATION S 10 DEG 57 MIN W.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6230 ***********************************************************************
 DN6230  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6230  DESIGNATION -  HORSESHOE
 DN6230  PID         -  DN6230
 DN6230  STATE/COUNTY-  MD/CECIL
 DN6230  COUNTRY     -  US
 DN6230  USGS QUAD   -  RISING SUN (2016)
 DN6230
 DN6230                         *CURRENT SURVEY CONTROL
 DN6230  ______________________________________________________________________
 DN6230* NAD 83(2011) POSITION- 39 43 03.20174(N) 076 06 55.26557(W)   ADJUSTED
 DN6230* NAD 83(2011) ELLIP HT-    86.981 (meters)        (06/27/12)   ADJUSTED
 DN6230* NAD 83(2011) EPOCH   -  2010.00
 DN6230* NAVD 88 ORTHO HEIGHT -   119.95  (meters)      393.5   (feet) GPS OBS
 DN6230  ______________________________________________________________________
 DN6230  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6230  GEOID HEIGHT    -        -32.941 (meters)                     GEOID03
 DN6230  GEOID HEIGHT    -        -32.966 (meters)                     GEOID18
 DN6230  NAD 83(2011) X  -  1,178,932.091 (meters)                     COMP
 DN6230  NAD 83(2011) Y  - -4,769,323.057 (meters)                     COMP
 DN6230  NAD 83(2011) Z  -  4,053,968.186 (meters)                     COMP
 DN6230  LAPLACE CORR    -         -0.82  (seconds)                    DEFLEC18
 DN6230
 DN6230  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6230  Standards:
 DN6230         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6230            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6230  -------------------------------------------------------------------
 DN6230  NETWORK    0.73   1.49           0.34   0.24   0.76     -0.18479164
 DN6230  -------------------------------------------------------------------
 DN6230  Click here for local accuracies and other accuracy information.
 DN6230
 DN6230.The horizontal coordinates were established by GPS observations
 DN6230.and adjusted by the National Geodetic Survey in June 2012.
 DN6230
 DN6230.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6230.been affixed to the stable North American tectonic plate. See 
 DN6230.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6230
 DN6230.The horizontal coordinates are valid at the epoch date displayed above
 DN6230.which is a decimal equivalence of Year/Month/Day.
 DN6230
 DN6230.The orthometric height was determined by GPS observations and a
 DN6230.high-resolution geoid model using precise GPS observation and
 DN6230.processing techniques.
 DN6230
 DN6230.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6230.GEOID18 height accuracy estimate available here.
 DN6230
 DN6230.Click photographs - Photos may exist for this station.
 DN6230
 DN6230.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6230
 DN6230.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6230
 DN6230.The ellipsoidal height was determined by GPS observations
 DN6230.and is referenced to NAD 83.
 DN6230
 DN6230. The following values were computed from the NAD 83(2011) position.
 DN6230
 DN6230;                    North         East     Units Scale Factor Converg.
 DN6230;SPC MD       -   228,037.867   475,857.063   MT  1.00005777   +0 33 18.8
 DN6230;SPC MD       -   748,154.24  1,561,207.71   sFT  1.00005777   +0 33 18.8
 DN6230;UTM  18      - 4,397,004.092   404,401.710   MT  0.99971251   -0 42 46.0
 DN6230
 DN6230!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6230!SPC MD       -   0.99998635  x   1.00005777  =   1.00004412
 DN6230!UTM  18      -   0.99998635  x   0.99971251  =   0.99969887
 DN6230
 DN6230_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0440197004(NAD 83)
 DN6230
 DN6230                          SUPERSEDED SURVEY CONTROL
 DN6230
 DN6230  NAD 83(2007)-  39 43 03.20188(N)    076 06 55.26633(W) AD(2002.00) 1
 DN6230  ELLIP H (02/23/12)   86.998  (m)                       GP(2002.00) 4 1
 DN6230
 DN6230.Superseded values are not recommended for survey control.
 DN6230
 DN6230.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6230.See file dsdata.pdf to determine how the superseded data were derived.
 DN6230
 DN6230_MARKER: DD = SURVEY DISK
 DN6230_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6230_STAMPING: HORSESHOE 2008
 DN6230_MARK LOGO: MD-015
 DN6230_PROJECTION: FLUSH
 DN6230_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6230_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6230+STABILITY: SURFACE MOTION
 DN6230_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6230+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6230
 DN6230  HISTORY     - Date     Condition        Report By
 DN6230  HISTORY     - 20081204 MONUMENTED       GWS
 DN6230  HISTORY     - 20250917 GOOD             PROFLN
 DN6230
 DN6230                          STATION DESCRIPTION
 DN6230
 DN6230'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6230'THE STATION IS LOCATED ABOUT 7.2 MI (11.6 KM) WEST OF CALVERT, 3.6 MI
 DN6230'(5.8 KM) NORTHEAST OF CONOWINGO AND 3.1 MI (5.0 KM) WEST-NORTHWEST OF
 DN6230'RISING SUN.
 DN6230'
 DN6230'TO REACH FROM THE JUNCTION OF US 1 AND SLICERS MILLING ROAD, GO NORTH
 DN6230'ON SLICERS MILLING ROAD FOR 0.72 MI (1.2 KM) TO A FORK.  BEAR LEFT AND
 DN6230'GO WEST-SOUTHWEST ON SLICERS MILLING ROAD FOR 0.76 MI (1.2 KM) TO A
 DN6230'SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTH-NORTHEAST ON
 DN6230'SPRINGHILL ROAD FOR 0.96 MI (1.5 KM) TO A T-INTERSECTION.  TURN LEFT
 DN6230'AND GO WEST ON RIDGE ROAD FOR 0.50 MI (0.8 KM) TO THE STATION ON THE
 DN6230'LEFT.
 DN6230'
 DN6230'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6230'CONCRETE MONUMENT ON THE SOUTH SIDE OF RIDGE ROAD, 113.6 FT (34.6 M)
 DN6230'WEST OF THE SOUTHWEST CORNER OF THE SOUTH STONE PILLAR FOR THE CAMP
 DN6230'HORSESHOE SIGN AND 46 FT (14.0 M) SOUTHWEST OF A 12 INCH (30 CM) BLUE
 DN6230'SPRUCE.
 DN6230
 DN6230                          STATION RECOVERY (2025)
 DN6230
 DN6230'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6230'ON THE GROUNDS OF HORSESHOE SCOUT RESERVATION.  THE MARK IS 140 FT
 DN6230'(42.7 M) EAST OF THE EAST LINE EXTENDED OF A 2-STORY STONE HOUSE AND
 DN6230'44 FT (13.4 M) SOUTH-SOUTHWEST OF AN 8 INCH (20 CM) GUM OR MAPLE TREE
 DN6230'ACROSS THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6598 ***********************************************************************
 HV6598  DESIGNATION -  HORSESHOE 1908
 HV6598  PID         -  HV6598
 HV6598  STATE/COUNTY-  MD/ST MARYS
 HV6598  COUNTRY     -  US
 HV6598  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6598
 HV6598                         *CURRENT SURVEY CONTROL
 HV6598  ______________________________________________________________________
 HV6598* NAD 83(1993) POSITION- 38 12 06.53476(N) 076 26 43.99111(W)   ADJUSTED
 HV6598* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV6598  ______________________________________________________________________
 HV6598  GEOID HEIGHT    -        -34.680 (meters)                     GEOID18
 HV6598  LAPLACE CORR    -         -6.00  (seconds)                    DEFLEC18
 HV6598  HORZ ORDER      -  THIRD
 HV6598
 HV6598.The horizontal coordinates were established by classical geodetic methods
 HV6598.and adjusted by the National Geodetic Survey in November 1994.
 HV6598
 HV6598.The orthometric height was scaled from a topographic map.
 HV6598
 HV6598.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6598.GEOID18 height accuracy estimate available here.
 HV6598
 HV6598.Click photographs - Photos may exist for this station.
 HV6598
 HV6598.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6598
 HV6598. The following values were computed from the NAD 83(1993) position.
 HV6598
 HV6598;                    North         East     Units Scale Factor Converg.
 HV6598;SPC MD       -    59,551.607   448,565.278   MT  1.00001853   +0 20 52.8
 HV6598;SPC MD       -   195,378.90  1,471,667.92   sFT  1.00001853   +0 20 52.8
 HV6598;UTM  18      - 4,229,194.770   373,429.711   MT  0.99979730   -0 53 38.7
 HV6598
 HV6598!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6598!SPC MD       -   1.00000470  x   1.00001853  =   1.00002323
 HV6598!UTM  18      -   1.00000470  x   0.99979730  =   0.99980200
 HV6598
 HV6598:                Primary Azimuth Mark                     Grid Az
 HV6598:SPC MD       -  CALVERT MONUMENT 1908                    151 18 45.9
 HV6598:UTM  18      -  CALVERT MONUMENT 1908                    152 33 17.4
 HV6598
 HV6598_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7342929194(NAD 83)
 HV6598
 HV6598|---------------------------------------------------------------------|
 HV6598| PID    Reference Object                     Distance      Geod. Az  |
 HV6598|                                                           dddmmss.s |
 HV6598| HV6610 ST MARYS EPISCOPAL CH CROSS         APPROX. 1.8 KM 1494824.5 |
 HV6598| HV6609 CALVERT MONUMENT 1908               APPROX. 1.8 KM 1513938.7 |
 HV6598|---------------------------------------------------------------------|
 HV6598
 HV6598                          SUPERSEDED SURVEY CONTROL
 HV6598
 HV6598  NAD 83(1991)-  38 12 06.53396(N)    076 26 43.99428(W) AD(       ) 3
 HV6598  NAD 83(1986)-  38 12 06.53433(N)    076 26 44.00766(W) AD(       ) 3
 HV6598  NAD 27      -  38 12 06.16700(N)    076 26 45.22600(W) AD(       ) 3
 HV6598  USSD        -  38 12 06.55100(N)    076 26 44.93000(W) AD(       ) 3
 HV6598
 HV6598.Superseded values are not recommended for survey control.
 HV6598
 HV6598.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6598.See file dsdata.pdf to determine how the superseded data were derived.
 HV6598
 HV6598_MARKER: Z = SEE DESCRIPTION
 HV6598_SETTING: 0 = UNSPECIFIED SETTING
 HV6598_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6598
 HV6598  HISTORY     - Date     Condition        Report By
 HV6598  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6598  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6598  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6598
 HV6598                          STATION DESCRIPTION
 HV6598
 HV6598'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6598'STATION IS ON THE EASTERN SIDE OF UPPER ST. MARYS RIVER, ABOUT
 HV6598'3/8 MILE NNE OF HORSESHOE POINT, OPPOSITE SHORT POINT, AND 1-1/8
 HV6598'MILES NNW OF CALVERT MONUMENT, IN A CULTIVATED FIELD ABOUT 25
 HV6598'FEET ABOVE HIGH WATER, 175 YARDS E OF SHORE, 120 YARDS E OF EDGE
 HV6598'OF BANK, 60 YARDS NW OF RAIL FENCE AND A LINE OF TREES, AND 165
 HV6598'YARDS NE OF CORNER OF FENCE AND BANK.
 HV6598'
 HV6598'SUBSURFACE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6598'SHELL FISH SURVEY STANDARD MONUMENT, AND 8-INCH SQUARE CONRETE
 HV6598'POST 2 FEET LONG, ABOUT 12 INCHES BELOW SURFACE OF GROUND.  THE
 HV6598'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HV6598'POST.  SURFACE MARK IS CENTER OF 3-INCH SQUARE WOODEN
 HV6598'BOX.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE
 HV6598'AS FOLLOWS--NAIL IN BLAZE IN 14-INCH OAK TREE, 64.12 METERS
 HV6598'(210.4 FEET), S 6 DEG 01 MIN W.  CHIMNEY OF MC COYS HOUSE ON LYNCH
 HV6598'ISLAND, 1-1/2 MILES, N 58 DEG 26 MIN W.  CENTER FRONT PEAK OF
 HV6598'HILTONS HOUSE, 1-1/2 MILES, N 41 DEG 37 MIN W.  NEAR END OF GABLE,
 HV6598'1/4 MILE, N 31 DEG 11 MIN E.  NEAR CORNER OF NEAR CHIMNEY OF
 HV6598'FREEMANS HOUSE, 1/4 MILE, N 84 DEG 42 MIN E.  NAIL IN BLAZE IN
 HV6598'15-INCH CEDAR TREE, 72.41 METERS (237.6 FEET), S 81 DEG 51 MIN E.
 HV6598'NAIL IN BLAZE IN 4-INCH CEDAR TREE, 51.71 METERS (169.7 FEET),
 HV6598'S 33 DEG 41 MIN E.  RIGHT CORNER OF NEAR SQUARE PILLAR AT ST.
 HV6598'MARYS SEMINARY, 1-1/8 MILES, S 32 DEG 00 MIN E.
 HV6598
 HV6598                          STATION RECOVERY (1942)
 HV6598
 HV6598'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6598'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR ONE HOUR,
 HV6598'BUT NO TRACE OF IT COULD BE FOUND.  A SEARCH WAS MADE FOR THE
 HV6598'LOCAL REFERENCES BUT THEY NO LONGER EXIST, AND ALL THE FENCES HAVE
 HV6598'BEEN TORN AWAY.  IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED
 HV6598'AS LOST.
 HV6598
 HV6598                          STATION RECOVERY (1958)
 HV6598
 HV6598'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6598'THE STATION IS LOST.  DUE TO THE LOSS OF ALL LOCAL REFERENCES, THIS
 HV6598'SUB-SURFACE MARK WAS NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6292 ***********************************************************************
 HV6292  DESIGNATION -  HORSESHOE 2
 HV6292  PID         -  HV6292
 HV6292  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6292  COUNTRY     -  US
 HV6292  USGS QUAD   -  DEALE OE E (2016)
 HV6292
 HV6292                         *CURRENT SURVEY CONTROL
 HV6292  ______________________________________________________________________
 HV6292* NAD 83(1991) POSITION- 38 50 11.88973(N) 076 29 23.83551(W)   ADJUSTED
 HV6292* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6292  ______________________________________________________________________
 HV6292  GEOID HEIGHT    -        -33.557 (meters)                     GEOID18
 HV6292  LAPLACE CORR    -         -3.59  (seconds)                    DEFLEC18
 HV6292  HORZ ORDER      -  THIRD
 HV6292
 HV6292.The horizontal coordinates were established by classical geodetic methods
 HV6292.and adjusted by the National Geodetic Survey in January 1992.
 HV6292
 HV6292.The orthometric height was scaled from a topographic map.
 HV6292
 HV6292.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6292.GEOID18 height accuracy estimate available here.
 HV6292
 HV6292.Click photographs - Photos may exist for this station.
 HV6292
 HV6292.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6292
 HV6292. The following values were computed from the NAD 83(1991) position.
 HV6292
 HV6292;                    North         East     Units Scale Factor Converg.
 HV6292;SPC MD       -   129,995.139   444,282.404   MT  0.99995008   +0 19 12.4
 HV6292;SPC MD       -   426,492.39  1,457,616.52   sFT  0.99995008   +0 19 12.4
 HV6292;UTM  18      - 4,299,702.717   370,682.944   MT  0.99980593   -0 56 04.1
 HV6292
 HV6292!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6292!SPC MD       -   1.00000531  x   0.99995008  =   0.99995539
 HV6292!UTM  18      -   1.00000531  x   0.99980593  =   0.99981123
 HV6292
 HV6292:                Primary Azimuth Mark                     Grid Az
 HV6292:SPC MD       -  BLOODY POINT BAR LH                      091 52 07.9
 HV6292:UTM  18      -  BLOODY POINT BAR LH                      093 07 24.4
 HV6292
 HV6292_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7068299702(NAD 83)
 HV6292
 HV6292|---------------------------------------------------------------------|
 HV6292| PID    Reference Object                     Distance      Geod. Az  |
 HV6292|                                                           dddmmss.s |
 HV6292| HV6155 TOLSON                              APPROX.11.9 KM 0645137.3 |
 HV6292| HV6299 BLOODY POINT BAR LH                 APPROX. 8.5 KM 0921120.3 |
 HV6292| CX2903 HORSESHOE RM                         11.240 METERS 28646     |
 HV6292|---------------------------------------------------------------------|
 HV6292
 HV6292                          SUPERSEDED SURVEY CONTROL
 HV6292
 HV6292  NAD 83(1986)-  38 50 11.88672(N)    076 29 23.84782(W) AD(       ) 3
 HV6292  NAD 27      -  38 50 11.47700(N)    076 29 24.99900(W) AD(       ) 3
 HV6292  USSD        -  38 50 11.85000(N)    076 29 24.82000(W) AD(       ) 3
 HV6292
 HV6292.Superseded values are not recommended for survey control.
 HV6292
 HV6292.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6292.See file dsdata.pdf to determine how the superseded data were derived.
 HV6292
 HV6292
 HV6292  HISTORY     - Date     Condition        Report By
 HV6292  HISTORY     - 1898     MONUMENTED       CGS
 HV6292  HISTORY     - 1906     GOOD             CGS
 HV6292  HISTORY     - 1932     MARK NOT FOUND   CGS
 HV6292
 HV6292                          STATION DESCRIPTION
 HV6292
 HV6292'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 HV6292'ABOUT 1/4 MILE S OF THE EASTERN EDGE OF HORSESHOE POINT, ON A LOW,
 HV6292'MARSHY POINT WHICH IS NEARLY AWASH AT HIGH TIDE.  IT IS ABOUT 300
 HV6292'YARDS E OF YELLOW HOUSE WHICH IS SURROUNDED BY CEDARS AND HAS
 HV6292'THREE LIGHTNING RODS.  STATION MARKED BY TWO 6-INCH DRAIN TILES
 HV6292'PLACED ONE ABOVE THE OTHER AND A NAIL IN TOP OF A 4-INCH PINE
 HV6292'STUB FLUSH WITH THE GROUND.  THE REFERENCE MARK IS MARKED BY A
 HV6292'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV6292'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV6292'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6292'M.S.F.C. ARE COUNTER-SUNK IN TOP OF POST.  11.24 METERS (36.9
 HV6292'FEET) FROM THE STATION N 73 DEG 13 MIN W.  OTHER
 HV6292'DISTANCES AND BEARINGS ARE AS FOLLOWS--S CHIMNEY ON WHITE
 HV6292'HOUSE, 1/2 MILE, S 51 DEG 14 MIN W.  CHIMNEY ON YELLOW
 HV6292'HOUSE, (SEE ABOVE), 300 YARDS, S 72 DEG 09 MIN W.  CHIMNEY ON SMALL
 HV6292'HOUSE, 300 YARDS, N 40 DEG 39 MIN W.  W CHIMNEY OF HOUSE, 350
 HV6292'YARDS, S 32 DEG 50 MIN W.
 HV6292
 HV6292                          STATION RECOVERY (1932)
 HV6292
 HV6292'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6292'STATION IS LOST.
 HV6292'
 HV6292'OWNER OF PROPERTY WHO HAD SEEN MARK ESTABLISHED VISITED
 HV6292'LOCATION WITH THE CHIEF OF PARTY AND POINTED OUT WHERE THE LOW
 HV6292'BANK HAD BEEN CUT AWAY BY ICE.  MONUMENT OF MARYLAND SHELL FISH
 HV6292'SURVEY WHICH WAS AN INSHORE REFERENCE MARK HAD CAVED IN WITH
 HV6292'BANK AND THEN HAD BEEN REMOVED BY CAMPERS ALONG THE BEACH TO USE
 HV6292'AS PART OF A CAMP FIRE-PLACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1923 ***********************************************************************
 HU1923  DESIGNATION -  HORSMAN
 HU1923  PID         -  HU1923
 HU1923  STATE/COUNTY-  MD/DORCHESTER
 HU1923  COUNTRY     -  US
 HU1923  USGS QUAD   -  MARDELA SPRINGS (2016)
 HU1923
 HU1923                         *CURRENT SURVEY CONTROL
 HU1923  ______________________________________________________________________
 HU1923* NAD 83(1991) POSITION- 38 25 01.88332(N) 075 51 20.95584(W)   ADJUSTED
 HU1923* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HU1923  ______________________________________________________________________
 HU1923  GEOID HEIGHT    -        -35.538 (meters)                     GEOID18
 HU1923  LAPLACE CORR    -         -2.25  (seconds)                    DEFLEC18
 HU1923  HORZ ORDER      -  FIRST
 HU1923
 HU1923.The horizontal coordinates were established by classical geodetic methods
 HU1923.and adjusted by the National Geodetic Survey in January 1992.
 HU1923
 HU1923.The orthometric height was scaled from a topographic map.
 HU1923
 HU1923.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1923.GEOID18 height accuracy estimate available here.
 HU1923
 HU1923.Click photographs - Photos may exist for this station.
 HU1923
 HU1923.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1923
 HU1923. The following values were computed from the NAD 83(1991) position.
 HU1923
 HU1923;                    North         East     Units Scale Factor Converg.
 HU1923;SPC MD       -    83,937.371   499,919.617   MT  0.99998168   +0 43 05.3
 HU1923;SPC MD       -   275,384.52  1,640,152.94   sFT  0.99998168   +0 43 05.3
 HU1923;UTM  18      - 4,252,451.479   425,288.221   MT  0.99966874   -0 31 54.5
 HU1923
 HU1923!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1923!SPC MD       -   1.00000546  x   0.99998168  =   0.99998714
 HU1923!UTM  18      -   1.00000546  x   0.99966874  =   0.99967420
 HU1923
 HU1923:                Primary Azimuth Mark                     Grid Az
 HU1923:SPC MD       -  HORSMAN RM 2 RESET                       098 36 45.2
 HU1923:UTM  18      -  HORSMAN RM 2 RESET                       099 51 45.0
 HU1923
 HU1923_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2528852451(NAD 83)
 HU1923
 HU1923|---------------------------------------------------------------------|
 HU1923| PID    Reference Object                     Distance      Geod. Az  |
 HU1923|                                                           dddmmss.s |
 HU1923| DC7403 HORSMAN RM 1                         46.820 METERS 01334     |
 HU1923| HU1918 VIENNA WATER TANK                   APPROX. 7.9 KM 0201246.0 |
 HU1923| HU1919 VIENNA W PWRLINE MST CEN TOP        APPROX. 8.1 KM 0212200.7 |
 HU1923| HU1922 VIENNA E PWRLINE MST CEN TOP        APPROX. 8.0 KM 0235012.9 |
 HU1923| DC7404 HORSMAN RM 2 AZIMUTH                               0654946.5 |
 HU1923| HU1801 HEBRON TANK                         APPROX.14.4 KM 0892827.1 |
 HU1923| DC7405 HORSMAN RM 2 RESET                                 0991950.5 |
 HU1923| DC7406 HORSMAN RM 3                         42.126 METERS 11247     |
 HU1923|---------------------------------------------------------------------|
 HU1923
 HU1923                          SUPERSEDED SURVEY CONTROL
 HU1923
 HU1923  NAD 83(1986)-  38 25 01.88082(N)    075 51 20.97696(W) AD(       ) 1
 HU1923  NAD 27      -  38 25 01.45400(N)    075 51 22.22200(W) AD(       ) 1
 HU1923
 HU1923.Superseded values are not recommended for survey control.
 HU1923
 HU1923.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1923.See file dsdata.pdf to determine how the superseded data were derived.
 HU1923
 HU1923_MARKER: DS = TRIANGULATION STATION DISK
 HU1923_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1923_STAMPING: HORSMAN 1934
 HU1923_MARK LOGO: CGS
 HU1923_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1923+STABILITY: SURFACE MOTION
 HU1923
 HU1923  HISTORY     - Date     Condition        Report By
 HU1923  HISTORY     - 1934     MONUMENTED       CGS
 HU1923  HISTORY     - 1942     GOOD             CGS
 HU1923  HISTORY     - 1942     GOOD             CGS
 HU1923
 HU1923                          STATION DESCRIPTION
 HU1923
 HU1923'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU1923'THE SECOND-ORDER STATION IS ON THE PROPERTY OF T.H. HORSMAN, ABOUT
 HU1923'0.3 MILE W OF MR. HORSMANS HOUSE, AT THE E EDGE OF A WOODED
 HU1923'SECTION, ABOUT 40 PACES NNE OF A T-ROAD LEADING SW, 44.7 FEET NNE
 HU1923'OF THE CENTER LINE OF A DIRT ROAD, 28.6 FEET SE OF A FORKED PINE
 HU1923'TREE, AND 24.4 FEET N OF THE CORNER FENCE POST WHICH IS E OF A
 HU1923'GATE.  THE MARK PROJECTS ABOUT 4 INCHES ABOVE GROUND.  THE MARK
 HU1923'IS STAMPED HORSMAN 1934.
 HU1923'
 HU1923'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HU1923'DISKS SET IN CONCRETE, AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 HU1923'
 HU1923'REFERENCE MARK NO.1 IS 153.65 FEET NNE OF THE STATION, 43.4 FEET
 HU1923'E OF A 10-INCH PINE TREE, AND 1 FOOT WNW OF A FENCE LINE.  THE MARK
 HU1923'PROJECTS ABOUT 3 INCHES ABOVE GROUND.  THE MARK IS STAMPED HORSMAN
 HU1923'NO.1 1934.
 HU1923'
 HU1923'REFERENCE MARK NO.2, THE AZIMUTH MARK, IS APPROXIMATELY 0.3 MILE
 HU1923'E OF THE STATION, ABOUT 18 PACES W OF THE MAIN BARN (LIGHTNING ROD
 HU1923'ON TOP), 1 PACE W OF A WIRE FENCE, AND 1 PACE N OF THE NW CORNER OF
 HU1923'A BARN.  THE MARK PROJECTS 6 INCHES ABOVE GROUND AND IS STAMPED
 HU1923'HORSMAN NO 2 1934.
 HU1923'
 HU1923'REFERENCE MARK NO.3 IS 138.22 FEET SE OF THE STATION, 23.7 FEET
 HU1923'NE OF THE CENTER LINE OF A ROAD, AND 2 FEET NE OF A FENCE LINE.  THE
 HU1923'MARK PROJECTS 3 INCHES ABOVE GROUND AND IS STAMPED HORSMAN NO
 HU1923'3 1934.
 HU1923'
 HU1923'TO REACH THE STATION FROM THE BRIDGE OVER THE NANTICOKE RIVER AT
 HU1923'VIENNA, GO W ON U.S. HIGHWAY 213 FOR ONE BLOCK, TURN LEFT AT AN
 HU1923'ESSO FILLING STATION, GO ONE BLOCK, TURN RIGHT FOR ONE BLOCK,
 HU1923'TURN LEFT AT THE EASTERN SHORE TRUST CO. ON ELLIOTT ROAD, FOLLOW
 HU1923'ELLIOTT ROAD FOR ABOUT 3 MILES TO THE END OF THE HARD SURFACE,
 HU1923'THENCE ABOUT 2.5 MILES ON A GRAVEL ROAD TO HENRYS CROSS-ROAD
 HU1923'(PUROL SERVICE STATION AND STORE AT THE SE ANGLE), TURN LEFT
 HU1923'(SE) FOR ABOUT 0.7 MILE TO THE STATION.
 HU1923
 HU1923                          STATION RECOVERY (1942)
 HU1923
 HU1923'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU1923'THE STATION AND REFERENCE MARKS NOS. 1 AND 3 WERE RECOVERED AND
 HU1923'FOUND IN GOOD CONDITION.  REFERENCE MARK NO.2 (AZIMUTH MARK) WAS
 HU1923'FOUND IN GOOD CONDITION BUT MOVED TO A NEW LOCATION SO AS TO BE
 HU1923'VISIBLE FROM THE GROUND FROM THE STATION.  A COMPLETE NEW
 HU1923'DESCRIPTION FOLLOWS--
 HU1923'
 HU1923'THE STATION (NOTES 1A AND 7A) IS 6.3 MILES BY ROAD S OF VIENNA ON
 HU1923'LAND OWNED BY T.H. HORSMAN.  IT IS AT THE E EDGE OF A WOODED
 HU1923'SECTION, 0.3 MILE W OF THE HORSMAN RESIDENCE, 42 FEET N OF THE
 HU1923'CENTER OF THE E-W ROAD, 19 FEET N OF THE N RIGHT-OF-WAY FENCE
 HU1923'OF THE ROAD, AND 11 FEET W OF A N-S FENCE LINE.  IT IS STAMPED
 HU1923'HORSMAN 1934 AND PROJECTS 2 INCHES.
 HU1923'
 HU1923'REFERENCE MARK NO.1 (NOTE 11A) IS N OF THE STATION, 1 FOOT W OF
 HU1923'A FENCE LINE AND 195 FEET N OF THE CENTER OF THE E-W ROAD.  IT
 HU1923'IS STAMPED HORSMAN NO.1 1934 AND PROJECTS 2 INCHES.
 HU1923'
 HU1923'REFERENCE MARK NO.2 (AZIMUTH MARK) (NOTE 11A) IS 0.25 MILE E
 HU1923'BY S OF THE STATION, 11 FEET W OF THE W FENCE OF THE LANE INTO THE
 HU1923'HORSMAN RESIDENCE, 28 FEET N OF THE CENTER OF THE ROAD, AND 3 FEET
 HU1923'N OF THE N RIGHT-OF-WAY FENCE LINE.  IT IS STAMPED HORSMAN NO.2
 HU1923'1934 RESET 1942, PROJECTS 1 FOOT.
 HU1923'
 HU1923'REFERENCE MARK NO.3 (NOTE 11A) IS E BY S OF THE STATION, 23
 HU1923'FEET N OF THE CENTER OF THE ROAD, AND 2 FEET N OF THE N RIGHT-OF-WAY
 HU1923'FENCE LINE.  IT IS STAMPED HORSMAN NO.3 1934 AND PROJECTS 3 INCHES.
 HU1923'
 HU1923'TO REACH THE STATION FROM THE CORNER OF RACE AND MARKET STREETS
 HU1923'IN VIENNA, GO S ON MARKET STREET AND EXTENSION FOR 5.6 MILES TO A
 HU1923'CROSS ROAD AND STORE IN THE SE ANGLE, TURN LEFT AND GO 0.7 MILE
 HU1923'TO A SIDE ROAD RIGHT AND THE STATION ON THE LEFT.
 HU1923'
 HU1923'A 37-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION MOORE.
 HU1923'
 HU1923'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION HATTON.
 HU1923'
 HU1923'A 90-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION SAVANNAH.
 HU1923'
 HU1923'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION NORTH.
 HU1923'
 HU1923'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION GORE.
 HU1923'
 HU1923'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION VIENNA.
 HU1923
 HU1923                          STATION RECOVERY (1942)
 HU1923
 HU1923'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1923'THE FOLLOWING DISCREPANCIES WERE NOTED IN THE FIELD--
 HU1923'
 HU1923'1.  DELETE 28.6 FEET SE OF A FORKED PINE TREE - THE TREE HAS
 HU1923'BEEN CUT DOWN.
 HU1923'
 HU1923'2.  R.M. 1 IS FLUSH WITH THE GROUND, NOT 6 INCHES ABOVE THE GROUND.
 HU1923'
 HU1923'3.  DELETE ENTIRE DESCRIPTION FOR R.M. 2 BECAUSE THIS MARK WAS
 HU1923'RESET IN 1942, IN A NEW POSITION.
 HU1923'
 HU1923'STATION IS LOCATED ABOUT 6 MILES SE OF VIENNA, NEAR HENRYS CROSS
 HU1923'ROAD, 0.3 MILE W OF THE T.H. HORSMAN DWELLING, AT THE E EDGE OF A
 HU1923'WOODED AREA, 120 FEET NE OF A T-ROAD LEADING IN A SW DIRECTION,
 HU1923'45 FEET NE OF THE CENTER LINE OF A DIRT ROAD, AND 25 FEET N OF
 HU1923'THE CORNER FENCE POST WHICH IS E OF THE GATE.
 HU1923'
 HU1923'STATION IS MARKED BY A BRONZE STATION DISK SET IN THE TOP OF AN
 HU1923'11-INCH SQUARE MONUMENT WHICH EXTENDS 2 INCHES ABOVE THE SURFACE
 HU1923'OF THE GROUND.  DISK IS STAMPED HORSMAN 1934.  THE STATION IS IN
 HU1923'GOOD CONDITION.
 HU1923'
 HU1923'REFERENCE MARK 1 IS 153.62 FEET NE OF THE STATION, 1 FOOT W
 HU1923'OF A FENCE LINE, AND 189 FEET NE OF THE INTERSECTION OF A DIRT
 HU1923'ROAD AND A WOODS LANE.  IT IS A BRONZE REFERENCE DISK, WITH THE
 HU1923'ARROW POINTING TOWARD THE STATION, SET IN THE TOP OF AN 11-INCH
 HU1923'SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE GROUND.  DISK IS
 HU1923'STAMPED HORSMAN NO 1 1934.  THE MARK IS IN GOOD CONDITION.
 HU1923'
 HU1923'REFERENCE MARK 2 (AZIMUTH MARK) IS ABOUT 0.2 MILE E OF THE
 HU1923'STATION, AT THE POINT OF INTERSECTION OF A PRIVATE DRIVEWAY AND A
 HU1923'DIRT ROAD LEADING TO THE NANTICOKE RIVER, 9.8 FEET W OF THE CENTER
 HU1923'LINE OF THE DRIVEWAY, 9.8 FEET N OF THE CENTER LINE OF THE ROAD,
 HU1923'AND 8.2 FEET FROM EITHER OF THE TWO FENCE LINES THAT INTERSECT AT
 HU1923'THE MARK.  IT IS A BRONZE REFERENCE DISK, WITH THE ARROW
 HU1923'POINTING TOWARD THE STATION, SET IN THE TOP OF AN 11-INCH SQUARE
 HU1923'CONCRETE MONUMENT WHICH EXTENDS ABOUT 10 INCHES ABOVE THE
 HU1923'SURFACE OF THE GROUND.  DISK IS STAMPED HORSMAN 1934 NO 2.
 HU1923'THE MARK IS IN GOOD CONDITION HAVING BEEN RESET IN 1942.
 HU1923'
 HU1923'REFERENCE MARK 3 IS 138.20 FEET SE OF THE STATION, 41 FEET NE OF
 HU1923'THE INTERSECTION OF A WOODS LANE AND A DIRT ROAD, 23 FEET N OF
 HU1923'THE CENTER LINE OF THE ROAD, AND 1 FOOT N OF THE FENCE LINE
 HU1923'SEPARATING A CULTIVATED FIELD FROM THE ROAD.  IT IS A BRONZE
 HU1923'REFERENCE DISK, WITH THE ARROW POINTING TOWARD THE STATION, SET
 HU1923'IN THE TOP OF AN 11-INCH SQUARE CONCRETE MONUMENT WHICH EXTENDS
 HU1923'2 INCHES ABOVE THE SURFACE OF THE GROUND.  DISK IS STAMPED
 HU1923'HORSMAN 1934 NO 3.  THE MARK IS IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5928 ***********************************************************************
 JV5928  DESIGNATION -  HORTIC RESET
 JV5928  PID         -  JV5928
 JV5928  STATE/COUNTY-  MD/PRINCE GEORGES
 JV5928  COUNTRY     -  US
 JV5928  USGS QUAD   -  BELTSVILLE (2016)
 JV5928
 JV5928                         *CURRENT SURVEY CONTROL
 JV5928  ______________________________________________________________________
 JV5928* NAD 83(1991) POSITION- 39 00 53.46980(N) 076 56 34.97845(W)   ADJUSTED
 JV5928* NAVD 88 ORTHO HEIGHT -    30.    (meters)       98.    (feet) SCALED
 JV5928  ______________________________________________________________________
 JV5928  GEOID HEIGHT    -        -32.097 (meters)                     GEOID18
 JV5928  LAPLACE CORR    -         -3.75  (seconds)                    DEFLEC18
 JV5928  HORZ ORDER      -  THIRD
 JV5928
 JV5928.The horizontal coordinates were established by classical geodetic methods
 JV5928.and adjusted by the National Geodetic Survey in January 1992.
 JV5928
 JV5928.The orthometric height was scaled from a topographic map.
 JV5928
 JV5928.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5928.GEOID18 height accuracy estimate available here.
 JV5928
 JV5928.Click photographs - Photos may exist for this station.
 JV5928
 JV5928.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5928
 JV5928. The following values were computed from the NAD 83(1991) position.
 JV5928
 JV5928;                    North         East     Units Scale Factor Converg.
 JV5928;SPC MD       -   149,656.552   404,932.146   MT  0.99995278   +0 02 08.7
 JV5928;SPC MD       -   490,998.20  1,328,514.88   sFT  0.99995278   +0 02 08.7
 JV5928;UTM  18      - 4,320,220.871   331,776.351   MT  0.99994847   -1 13 24.5
 JV5928
 JV5928!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5928!SPC MD       -   1.00000036  x   0.99995278  =   0.99995314
 JV5928!UTM  18      -   1.00000036  x   0.99994847  =   0.99994883
 JV5928
 JV5928:                Primary Azimuth Mark                     Grid Az
 JV5928:SPC MD       -  HORTIC AZ MK                             348 48 36.8
 JV5928:UTM  18      -  HORTIC AZ MK                             350 04 10.0
 JV5928
 JV5928_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3177620220(NAD 83)
 JV5928
 JV5928|---------------------------------------------------------------------|
 JV5928| PID    Reference Object                     Distance      Geod. Az  |
 JV5928|                                                           dddmmss.s |
 JV5928| CA9533 HORTIC RM 1                          16.862 METERS 00817     |
 JV5928| CB1578 ORCHARD AZ MK                                      0352957.5 |
 JV5928| CA9535 HORTIC RM 3                          40.798 METERS 06627     |
 JV5928| CA9534 HORTIC RM 2                          15.658 METERS 10350     |
 JV5928| CA9536 HORTIC RM 4                          42.550 METERS 32715     |
 JV5928| CA9532 HORTIC AZ MK                                       3485045.5 |
 JV5928|---------------------------------------------------------------------|
 JV5928
 JV5928                          SUPERSEDED SURVEY CONTROL
 JV5928
 JV5928  NAD 83(1986)-  39 00 53.46870(N)    076 56 34.98912(W) AD(       ) 3
 JV5928  NAD 27      -  39 00 53.07400(N)    076 56 36.07941(W) AD(       ) 3
 JV5928
 JV5928.Superseded values are not recommended for survey control.
 JV5928
 JV5928.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5928.See file dsdata.pdf to determine how the superseded data were derived.
 JV5928
 JV5928_MARKER: DH = HORIZONTAL CONTROL DISK
 JV5928_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5928_STAMPING: HORTIC 1958 1978
 JV5928_MARK LOGO: NGS
 JV5928_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5928+STABILITY: SURFACE MOTION
 JV5928
 JV5928  HISTORY     - Date     Condition        Report By
 JV5928  HISTORY     - 1958     MONUMENTED       CGS
 JV5928  HISTORY     - 1978     SEE DESCRIPTION  NGS
 JV5928
 JV5928                          STATION DESCRIPTION
 JV5928
 JV5928'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV5928'STATION IS LOCATED ABOUT 1.5 MILES NORTHWEST OF COLLEGE PARK, 2.8
 JV5928'MILES SOUTHWEST OF BELTSVILLE AND IS LOCATED ON THE DEPARTMENT OF
 JV5928'AGRICULTURE HORTICULTURE EXPERIMENTAL GROUNDS.  IT IS 119 FEET
 JV5928'SOUTH OF THE SOUTHEAST CORNER OF A BRIDGE, 24 FEET WEST-SOUTHWEST
 JV5928'OF THE CENTER OF A GRAVELED ROAD, 35 FEET WEST SOUTHWEST OF A
 JV5928'POWERLINE POLE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED,
 JV5928'HORTIC 1958.
 JV5928'
 JV5928'AZIMUTH MARK IS 23 FEET NORTH OF THE CENTER OF A ROADS FORK, 1 FOOT
 JV5928'SOUTH SOUTH-EAST OF A WHITE WITNESS POST.  THE MARK PROJECTS 2
 JV5928'INCHES AND THE DISK IS STAMPED.  HORTIC 1958.
 JV5928'
 JV5928'REFERENCE MARK NO. 1 IS 12 FEET EAST NORTH-EAST OF THE CENTER OF A
 JV5928'GRAVELED ROAD, 36 FEET NORTHWEST OF A POWERLINE POLE, 105 FEET
 JV5928'SOUTHEAST OF THE SOUTHEAST CORNER OF BRIDGE.  THE MARK IS SET FLUSH
 JV5928'AND THE DISK IS STAMPED, HORTIC NO 1 1958.
 JV5928'
 JV5928'REFERENCE MARK NO. 2 IS 11 FEET EAST NORTH-EAST OF CENTER OF GRAVELED
 JV5928'ROAD, 43 FEET SOUTH SOUTH-EAST OF HIGHLINE POLE.  THE MARK IS SET
 JV5928'FLUSH AND THE DISK IS STAMPED HORTIC NO 2 1958.
 JV5928'
 JV5928'TO REACH THE STATION FROM THE BUS STOP AT THE SOUTH ENTRANCE OF THE
 JV5928'HORTICULTURAL STATION, ABOUT 7 MILES SOUTH OF LAUREL, GO SOUTHERLY
 JV5928'ON U.S. HIGHWAY NO. 1 FOR 0.55 MILE TO CROSS ROADS AND TRAFFIC
 JV5928'LIGHT.  TURN RIGHT ON EDGEWOOD ROAD AND GO WESTERLY FOR 0.2 MILE
 JV5928'TO REVERSE FORK AND CHERRY HILL ROAD.  CONTINUE WESTERLY ON CHERRY
 JV5928'HILL ROAD FOR 0.5 MILE TO FORK, TAKE LEFT FORK, GRAVELED, AND GO
 JV5928'0.05 MILE TO CROSSROAD.  HERE TURN LEFT ON SURFACED ROAD AND GO
 JV5928'SOUTH FOR 0.25 MILE TO ROAD LEFT.  TURN LEFT AND GO 100 FEET
 JV5928'AND STATION AS DESCRIBED, ON THE NORTH BANK OF A LARGE DRAINAGE
 JV5928'DITCH.
 JV5928'
 JV5928'TO REACH AZIMUTH MARK FROM STATION, GO WESTERLY FOR 100 FEET TO
 JV5928'SURFACED ROAD, TURN RIGHT AND GO NORTH FOR 0.05 MILE TO NARROW
 JV5928'GRAVEL ROAD LEFT.  TURN LEFT AND GO NORTHWEST FOR 0.3 MILE TO
 JV5928'REVERSE FORK AND AZIMUTH MARK AS DESCRIBED.
 JV5928'
 JV5928'HEIGHT OF LIGHT ABOVE STATION MARK 1 METERS.
 JV5928
 JV5928                          STATION RECOVERY (1978)
 JV5928
 JV5928'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 (RGP)
 JV5928'THE STATION SURFACE MARK AND REFERENCE MARKS ONE AND TWO WERE ALL
 JV5928'FOUND DESTROYED.  THE STATION SUB-SURFACE MARK AND THE AZIMUTH MARK
 JV5928'WERE RECOVERED AND FOUND IN GOOD CONDITION.  A COMPLETE NEW STATION
 JV5928'SURFACE AND SUB-SURFACE MARKERS WERE SET IN THE SAME POSITION AS
 JV5928'THE OLD SUB-SURFACE DISK WHICH WAS FOUND.  NEW REFERENCE MARKS
 JV5928'THREE AND FOUR WERE ALSO ESTABLISHED.
 JV5928'
 JV5928'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JV5928'
 JV5928'THE STATION IS LOCATED ABOUT 2-3/4 AIRLINE MILES SOUTHWEST OF
 JV5928'BELTSVILLE, 1-1/2 MILES NORTHWEST OF COLLEGE PARK, 1/2 MILE SOUTH OF
 JV5928'INTERSTATE HIGHWAY 495 AND ON PROPERTY OWNED BY THE U.S. DEPARTMENT
 JV5928'OF ARGICULTURE HORTICULTURE EXPERIMENTAL GROUNDS.
 JV5928'
 JV5928'TO REACH THE FROM THE NORTH COLLEGE PARK POST OFFICE, GO NORTHERLY ON
 JV5928'U.S. HIGHWAY 1 FOR 0.2 MILE TO CHERRY HILL ROAD.  TURN LEFT AND GO
 JV5928'NORTHWEST ON CHERRY HILL ROAD FOR 0.2 MILE TO A REVERSE Y-FORK.
 JV5928'KEEP LEFT AND CONTINUE NORTHWEST ON CHERRY HILL ROAD FOR 0.5 MILE TO
 JV5928'A SIDE ROAD LEFT JUST AFTER THE ROAD STARTS UP A SLIGHT RISE.
 JV5928'TURN LEFT AND GO SOUTHWEST THEN SOUTHEAST ON A PAVED ROAD FOR
 JV5928'0.15 MILE TO A SIDE ROAD RIGHT AND ORCHARD 1957 (AZ MK ) ON THE
 JV5928'RIGHT, SOUTHWEST ANGLE OF THE INTERSECTION.  CONTINUE SOUTHEAST ON
 JV5928'THE PAVED ROAD FOR 0.1 MILE TO A FORK.  KEEP RIGHT AND GO
 JV5928'SOUTHWEST ON THE PAVED ROAD FOR 0.15 MILE TO A BRIDGE OVER A
 JV5928'CREEK AND THE STATION 153 FEET TO THE SOUTHEAST AND BETWEEN THE
 JV5928'CREEK AND A DIRT ROAD.
 JV5928'
 JV5928'THE STATION MARK IS A STANDARD DISK STAMPED HORTIC 1958 1978, SET IN
 JV5928'THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS 6-INCHES
 JV5928'ON THE WEST SIDE AND FLUSH ON THE EAST SIDE.  IT IS 26 FEET
 JV5928'SOUTHWEST OF THE CENTER OF THE DIRT ROAD, 22 FEET WEST OF A
 JV5928'POWERLINE POLE WITH A RAILROAD SPIKE IN THE WEST SIDE, 17 FEET
 JV5928'NORTHEAST OF THE NORTHEAST EDGE OF THE CREEK AND 1.7 FEET SOUTHWEST
 JV5928'OF A WITNESS POST.
 JV5928'
 JV5928'REFERENCE MARK 3 IS A STANDARD DISK STAMPED HORTIC 1958 NO 3 1978,
 JV5928'SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS
 JV5928'2-INCHES.  IT IS 171 FEET SOUTHEAST OF THE CENTER OF THE PAVED
 JV5928'ROAD, 132.6 FEET NORTHEAST OF THE WITNESS POST, 107 FEET NORTHEAST
 JV5928'OF THE CENTER OF THE DIRT ROAD AND 3 FEET SOUTHWEST OF A POWERLINE
 JV5928'POLE.
 JV5928'
 JV5928'REFERENCE MARK 4 IS A STANDARD DISK STAMPED HORTIC 1958 NO 4 1978,
 JV5928'CEMENTED IN A DRILL HOLE IN THE ABUTMENT OF THE BRIDGE.  IT IS 139.6
 JV5928'FEET NORTHWEST OF THE WITNESS POST, 31.4 FEET SOUTHWEST OF THE
 JV5928'CENTER OF THE DIRT ROAD AND 13 FEET SOUTHEAST OF THE CENTER OF THE
 JV5928'PAVED ROAD.
 JV5928'
 JV5928'THE AZIMUTH MARK IS A STANDARD DISK STAMPED HORTIC 1958, SET IN THE
 JV5928'TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH IS FLUSH WITH THE
 JV5928'SURFACE.  IT IS 20.5 FEET NORTHWEST OF A EAST-WEST ROAD, 14.8 FEET
 JV5928'NORTHEAST OF A NORTH-SOUTH ROAD AND 2.6 FEET SOUTHEAST OF A
 JV5928'WITNESS POST.
 JV5928'
 JV5928'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTHEAST ON THE
 JV5928'PAVED ROAD FOR 0.05 MILE TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 JV5928'NORTHWEST ON A FIELD ROAD FOR 0.3 MILE TO A SIDE ROAD RIGHT AND THE
 JV5928'AZIMUTH MARK IN THE NORTH PART OF THE INTERSECTION.
 JV5928'
 JV5928'ORCHARD 1957 (AZ MK ) IS A STANDARD DISK STAMPED ORCHARD 1957, SET
 JV5928'IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT WHICH PROJECTS
 JV5928'3-INCHES.  IT IS 25.1 FEET SOUTHWEST OF THE CENTER OF THE PAVED
 JV5928'ROAD, 71 FEET SOUTHEAST OF THE CENTER OF THE ROAD LEADING
 JV5928'NORTHWEST, 4.1 FEET SOUTHEAST OF A POWERLINE POLE AND 2.5 FEET
 JV5928'SOUTH OF A WITNESS POST.
 JV5928'
 JV5928'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1-1/2 MILES
 JV5928'NORTHWEST OF COLLEGE PARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6117 ***********************************************************************
 JV6117  DESIGNATION -  HOSHALL
 JV6117  PID         -  JV6117
 JV6117  STATE/COUNTY-  MD/BALTIMORE
 JV6117  COUNTRY     -  US
 JV6117  USGS QUAD   -  NEW FREEDOM (2019)
 JV6117
 JV6117                         *CURRENT SURVEY CONTROL
 JV6117  ______________________________________________________________________
 JV6117* NAD 83(1991) POSITION- 39 37 57.76671(N) 076 42 15.87360(W)   ADJUSTED
 JV6117* NAVD 88 ORTHO HEIGHT -   239.    (meters)      784.    (feet) SCALED
 JV6117  ______________________________________________________________________
 JV6117  GEOID HEIGHT    -        -32.235 (meters)                     GEOID18
 JV6117  LAPLACE CORR    -         -1.51  (seconds)                    DEFLEC18
 JV6117  HORZ ORDER      -  SECOND
 JV6117
 JV6117.The horizontal coordinates were established by classical geodetic methods
 JV6117.and adjusted by the National Geodetic Survey in January 1992.
 JV6117
 JV6117.The orthometric height was scaled from a topographic map.
 JV6117
 JV6117.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6117.GEOID18 height accuracy estimate available here.
 JV6117
 JV6117.Click photographs - Photos may exist for this station.
 JV6117
 JV6117.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6117
 JV6117. The following values were computed from the NAD 83(1991) position.
 JV6117
 JV6117;                    North         East     Units Scale Factor Converg.
 JV6117;SPC MD       -   218,290.962   425,377.240   MT  1.00003707   +0 11 07.9
 JV6117;SPC MD       -   716,176.26  1,395,591.83   sFT  1.00003707   +0 11 07.9
 JV6117;SPC PA S     -    33,773.348   689,766.894   MT  1.00006060   +0 40 42.1
 JV6117;SPC PA S     -   110,804.73  2,263,010.22   sFT  1.00006060   +0 40 42.1
 JV6117;UTM  18      - 4,388,381.185   353,731.585   MT  0.99986340   -1 05 14.5
 JV6117
 JV6117!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6117!SPC MD       -   0.99996760  x   1.00003707  =   1.00000467
 JV6117!SPC PA S     -   0.99996760  x   1.00006060  =   1.00002819
 JV6117!UTM  18      -   0.99996760  x   0.99986340  =   0.99983100
 JV6117
 JV6117:                Primary Azimuth Mark                     Grid Az
 JV6117:SPC MD       -  KEIFFER                                  124 14 32.4
 JV6117:SPC PA S     -  KEIFFER                                  123 44 58.2
 JV6117:UTM  18      -  KEIFFER                                  125 30 54.8
 JV6117
 JV6117_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5373188381(NAD 83)
 JV6117
 JV6117|---------------------------------------------------------------------|
 JV6117| PID    Reference Object                     Distance      Geod. Az  |
 JV6117|                                                           dddmmss.s |
 JV6117| JV6102 KEIFFER                             APPROX.12.7 KM 1242540.3 |
 JV6117|---------------------------------------------------------------------|
 JV6117
 JV6117                          SUPERSEDED SURVEY CONTROL
 JV6117
 JV6117  NAD 83(1986)-  39 37 57.76141(N)    076 42 15.87933(W) AD(       ) 2
 JV6117  NAD 27      -  39 37 57.38400(N)    076 42 16.97400(W) AD(       ) 2
 JV6117
 JV6117.Superseded values are not recommended for survey control.
 JV6117
 JV6117.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6117.See file dsdata.pdf to determine how the superseded data were derived.
 JV6117
 JV6117_MARKER: N = NAIL
 JV6117_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6117_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6117+STABILITY: SURFACE MOTION
 JV6117
 JV6117  HISTORY     - Date     Condition        Report By
 JV6117  HISTORY     - 1933     MONUMENTED       CGS
 JV6117  HISTORY     - 1935     GOOD             CGS
 JV6117  HISTORY     - 1958     POOR             CGS
 JV6117
 JV6117                          STATION DESCRIPTION
 JV6117
 JV6117'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV6117'TO REACH THIS STATION FROM RT. 111, TURN LEFT ON ROAD 0.3 MILE
 JV6117'NORTH OF WEISBURG WHICH IS THE MIDDLETOWN ROAD MAYS FILLING
 JV6117'STATION IS ON THE EAST SIDE OF THE ROAD AT THIS POINT.  GO 1.3
 JV6117'MILES TO A FORK IN THE ROAD AND TAKE THE LEFT FORK, GO 0.7 MILE
 JV6117'TURN RIGHT AND FOLLOW ARROW TO THE PRETTY BOY DAM, CONTINUE 0.6
 JV6117'MILE TO THE ENGINEERS OFFICE OF THE PRETTY BOY DAM.  THE STATION
 JV6117'IS 300 FEET S.W. OF THE HOUSE IN THE MIDDLE OF THE CORN FIELD
 JV6117'ON THE HIGHEST PART OF THE FIELD, THE MARK IS A NAIL IN A
 JV6117'CONCRETE POST 6 INCHES SQUARE AND EXTENDS ONE FOOT ABOVE THE
 JV6117'GROUND.  THIS MARK WAS USED AS A BASE STATION FOR THE PRETTY BOY
 JV6117'DAM.  THERE WERE NO REFERENCE MARKS AT THIS STATION.
 JV6117'
 JV6117'THIS STATION WAS INCLUDED AT THE REQUEST OF THE DEPT. OF CITY
 JV6117'PLANNING AND SURVEYS OF THE CITY OF BALTIMORE AND WAS OCCUPPIED
 JV6117'AFTER THE BUILDING PARTIES HAD MOVED TO THE CHESAPEAKE BAY
 JV6117'WORK.  THEREFORE NO REFERENCE MARKS WERE ESTABLISHED.  IT IS TIED
 JV6117'IN TO A NUMBER OF MONUMENTS IN THE PRETTY BOY DAM SURVEY.
 JV6117
 JV6117                          STATION RECOVERY (1935)
 JV6117
 JV6117'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (CFM)
 JV6117'TO REACH THIS STATION WHEN NORTHBOUND ON ROUTE NO. 111, TURN LEFT
 JV6117'ON MIDDLETOWN ROAD 0.3 MILE NORTH OF WEISBURG WHICH IS THE FIRST
 JV6117'LEFT IMMEDIATELY AFTER PASSING UNDER THE PROMINENT HIGH TENSION
 JV6117'TRANSMISSION LINE.  MAYS SERVICE STATION IS ON THE RIGHT.  GO
 JV6117'1.3 MILES TO A FORK IN THE ROAD, TAKE THE LEFT FORK MARKED
 JV6117'MOLESWORTH ROAD.  CONTINUE 0.7 OF A MILE TO SHARP RIGHT MARKED
 JV6117'ARMACOST ROAD, AND FOLLOW DIRECTION OF ARROW POINTING TO
 JV6117'PRETTYBOY DAM.  FOLLOW CONCRETE HIGHWAY 0.6 OF A MILE TO A
 JV6117'DWELLING AT A ROAD END WHERE THERE IS A SECOND ARROW POINTING
 JV6117'TO THE LEFT TOWARD PRETTYBOY DAM.  THE RIGHT IS MARKED SPOOK
 JV6117'HILL ROAD.  THE STATION IS 300 FEET SOUTHWEST OF THE HOUSE.
 JV6117
 JV6117                          STATION RECOVERY (1958)
 JV6117
 JV6117'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV6117'THE STATION WAS RECOVERED AS DESCRIBED AND FOUND IN POOR
 JV6117'CONDITION.  THE MONUMENT WAS LEANING SHARPLY AND HAD ONE CORNER
 JV6117'BROKEN OFF.  NO REFERENCE MARKS WERE SET AT THIS STATION SO IT
 JV6117'WAS NOT POSSIBLE TO DETERMINE HOW MUCH THE MARK HAD BEEN MOVED
 JV6117'FROM ITS FORMER POSITION.
 JV6117'
 JV6117'THE MONUMENT IS A 6 X 6 INCH CONCRETE POST WITH A NAIL IN THE
 JV6117'APPROXIMATE CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6313 ***********************************************************************
 HV6313  DESIGNATION -  HOSPITAL
 HV6313  PID         -  HV6313
 HV6313  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV6313  COUNTRY     -  US
 HV6313  USGS QUAD   -  ANNAPOLIS (2016)
 HV6313
 HV6313                         *CURRENT SURVEY CONTROL
 HV6313  ______________________________________________________________________
 HV6313* NAD 83(1991) POSITION- 38 59 21.08077(N) 076 29 28.62868(W)   ADJUSTED
 HV6313* NAVD 88 ORTHO HEIGHT -    12.    (meters)       39.    (feet) SCALED
 HV6313  ______________________________________________________________________
 HV6313  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 HV6313  LAPLACE CORR    -         -3.87  (seconds)                    DEFLEC18
 HV6313  HORZ ORDER      -  SECOND
 HV6313
 HV6313.The horizontal coordinates were established by classical geodetic methods
 HV6313.and adjusted by the National Geodetic Survey in January 1992.
 HV6313
 HV6313.The orthometric height was scaled from a topographic map.
 HV6313
 HV6313.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6313.GEOID18 height accuracy estimate available here.
 HV6313
 HV6313.Click photographs - Photos may exist for this station.
 HV6313
 HV6313.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6313
 HV6313. The following values were computed from the NAD 83(1991) position.
 HV6313
 HV6313;                    North         East     Units Scale Factor Converg.
 HV6313;SPC MD       -   146,928.889   444,072.439   MT  0.99995180   +0 19 09.4
 HV6313;SPC MD       -   482,049.20  1,456,927.66   sFT  0.99995180   +0 19 09.4
 HV6313;UTM  18      - 4,316,634.550   370,844.232   MT  0.99980540   -0 56 18.3
 HV6313
 HV6313!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6313!SPC MD       -   1.00000338  x   0.99995180  =   0.99995518
 HV6313!UTM  18      -   1.00000338  x   0.99980540  =   0.99980878
 HV6313
 HV6313:                Primary Azimuth Mark                     Grid Az
 HV6313:SPC MD       -  SEVERN                                   029 33 40.3
 HV6313:UTM  18      -  SEVERN                                   030 49 08.0
 HV6313
 HV6313_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7084416634(NAD 83)
 HV6313
 HV6313|---------------------------------------------------------------------|
 HV6313| PID    Reference Object                     Distance      Geod. Az  |
 HV6313|                                                           dddmmss.s |
 HV6313| JV5181 MANRESA CATH RETREAT CROSS          APPROX. 1.8 KM 0000449.2 |
 HV6313| HV6324 SEVERN                              APPROX. 1.1 KM 0295249.7 |
 HV6313| CX2906 HOSPITAL RM 3                        15.925 METERS 05611     |
 HV6313| CX2904 HOSPITAL RM 1                         5.490 METERS 12945     |
 HV6313| HV6377 BANCROFT HALL NORTH CUPOLA          APPROX. 1.1 KM 1373925.5 |
 HV6313| CX2905 HOSPITAL RM 2                        33.110 METERS 33944     |
 HV6313|---------------------------------------------------------------------|
 HV6313
 HV6313                          SUPERSEDED SURVEY CONTROL
 HV6313
 HV6313  NAD 83(1986)-  38 59 21.07697(N)    076 29 28.64001(W) AD(       ) 2
 HV6313  NAD 27      -  38 59 20.67500(N)    076 29 29.78100(W) AD(       ) 2
 HV6313
 HV6313.Superseded values are not recommended for survey control.
 HV6313
 HV6313.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6313.See file dsdata.pdf to determine how the superseded data were derived.
 HV6313
 HV6313_MARKER: DS = TRIANGULATION STATION DISK
 HV6313_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6313_STAMPING: HOSPITAL 1932
 HV6313_MARK LOGO: CGS
 HV6313_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6313+STABILITY: SURFACE MOTION
 HV6313
 HV6313  HISTORY     - Date     Condition        Report By
 HV6313  HISTORY     - 1932     MONUMENTED       CGS
 HV6313  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV6313  HISTORY     - 19981218 MARK NOT FOUND   USPSQD
 HV6313  HISTORY     - 20030930 MARK NOT FOUND   USPSQD
 HV6313  HISTORY     - 20050602 POOR             INDIV
 HV6313
 HV6313                          STATION DESCRIPTION
 HV6313
 HV6313'DESCRIBED BY COAST AND GEODETIC SURVEY 1932 (LOC)
 HV6313'THIS STATION IS ON THE SMALL LAWN IN FRONT OF THE NAVAL HOSPITAL
 HV6313'ABOUT 20 YARDS N OF THE MAIN ENTRANCE DOOR AND 5-1/2 METERS W OF
 HV6313'THE CEMENT WALK LEADING TO THAT DOOR.  IT IS 1.7 METERS FROM THE
 HV6313'EDGE OF THE SIDEWALK AND 1.2 METERS W OF A 6-INCH MAPLE TREE.  THE
 HV6313'STATION MARK WAS SET FLUSH WITH THE SURFACE OF THE GROUND IN A
 HV6313'CONICAL CEMENT FORM.
 HV6313'
 HV6313'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE DISKS
 HV6313'SET IN CONCRETE.
 HV6313'
 HV6313'REFERENCE MARK NO.1 IS AGAINST THE W EDGE OF THE CEMENT WALK
 HV6313'LEADING TO THE ENTRANCE AND 3.2 METERS S OF THE CURB OF THE ROAD IN
 HV6313'FRONT OF THE HOSPITAL.
 HV6313'
 HV6313'REFERENCE MARK NO.2 IS AT THE JUNCTION OF THE EDGE OF THE SIDEWALK
 HV6313'AND THE CURBING OF THE DRIVE TO THE DOOR OF THE HOSPITAL.
 HV6313'
 HV6313'REFERENCE MARK NO.3 IS ACROSS THE ROAD NEAR THE TOP OF THE FLIGHT
 HV6313'OF STEPS LEADING TO THE RIVERBANK.  IT IS AT THE W SIDE OF THE
 HV6313'LANDING AT THE TOP OF THESE STEPS AND ABOUT 2 FEET FROM THE EDGE
 HV6313'OF THE SLOPE.
 HV6313
 HV6313                          STATION RECOVERY (1960)
 HV6313
 HV6313'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV6313'THE THREE REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.  THE
 HV6313'STATION WAS NOT FOUND.  IT MAY HAVE BEEN REMOVED BY GROUNDS KEEPER.
 HV6313
 HV6313                          STATION RECOVERY (1998)
 HV6313
 HV6313'RECOVERY NOTE BY US POWER SQUADRON 1998
 HV6313'MARK NOT FOUND.
 HV6313
 HV6313                          STATION RECOVERY (2003)
 HV6313
 HV6313'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV6313'MARK NOT FOUND.
 HV6313
 HV6313                          STATION RECOVERY (2005)
 HV6313
 HV6313'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2005 (JCH)
 HV6313'MARK RECOVERD IN PLACE, BUT IN ROUGH CONDITION, IT HAS BEEN PAINTED
 HV6313'OVER AND RAN OVER WITH MULTIPLE LAWNMOWERS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5658 ***********************************************************************
 AB5658  DESIGNATION -  HOTEL
 AB5658  PID         -  AB5658
 AB5658  STATE/COUNTY-  MD/TALBOT
 AB5658  COUNTRY     -  US
 AB5658  USGS QUAD   -  EASTON (2016)
 AB5658
 AB5658                         *CURRENT SURVEY CONTROL
 AB5658  ______________________________________________________________________
 AB5658* NAD 83(2011) POSITION- 38 46 57.37047(N) 076 03 33.64728(W)   ADJUSTED
 AB5658* NAD 83(2011) ELLIP HT-   -18.660 (meters)        (06/27/12)   ADJUSTED
 AB5658* NAD 83(2011) EPOCH   -  2010.00
 AB5658* NAVD 88 ORTHO HEIGHT -    16.0   (meters)       52.    (feet) GPS OBS
 AB5658  ______________________________________________________________________
 AB5658  NAVD 88 orthometric height was determined with geoid model    GEOID93
 AB5658  GEOID HEIGHT    -        -35.023 (meters)                     GEOID93
 AB5658  GEOID HEIGHT    -        -34.678 (meters)                     GEOID18
 AB5658  NAD 83(2011) X  -  1,199,395.614 (meters)                     COMP
 AB5658  NAD 83(2011) Y  - -4,831,828.410 (meters)                     COMP
 AB5658  NAD 83(2011) Z  -  3,973,520.931 (meters)                     COMP
 AB5658  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 AB5658
 AB5658  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5658  Standards:
 AB5658         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5658            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5658  -------------------------------------------------------------------
 AB5658  NETWORK    9.79  26.30           4.26   3.69  13.42      0.13253682
 AB5658  -------------------------------------------------------------------
 AB5658  Click here for local accuracies and other accuracy information.
 AB5658
 AB5658.The horizontal coordinates were established by GPS observations
 AB5658.and adjusted by the National Geodetic Survey in June 2012.
 AB5658
 AB5658.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5658.been affixed to the stable North American tectonic plate. See 
 AB5658.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5658
 AB5658.The horizontal coordinates are valid at the epoch date displayed above
 AB5658.which is a decimal equivalence of Year/Month/Day.
 AB5658
 AB5658.The orthometric height was determined by GPS observations and a
 AB5658.high-resolution geoid model.
 AB5658
 AB5658.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5658.GEOID18 height accuracy estimate available here.
 AB5658
 AB5658.Click photographs - Photos may exist for this station.
 AB5658
 AB5658.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5658
 AB5658.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5658
 AB5658.The ellipsoidal height was determined by GPS observations
 AB5658.and is referenced to NAD 83.
 AB5658
 AB5658. The following values were computed from the NAD 83(2011) position.
 AB5658
 AB5658;                    North         East     Units Scale Factor Converg.
 AB5658;SPC MD       -   124,294.489   481,728.760   MT  0.99995116   +0 35 25.4
 AB5658;SPC MD       -   407,789.50  1,580,471.77   sFT  0.99995116   +0 35 25.4
 AB5658;UTM  18      - 4,293,185.071   407,988.149   MT  0.99970425   -0 39 48.9
 AB5658
 AB5658!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5658!SPC MD       -   1.00000293  x   0.99995116  =   0.99995409
 AB5658!UTM  18      -   1.00000293  x   0.99970425  =   0.99970718
 AB5658
 AB5658:                Primary Azimuth Mark                     Grid Az
 AB5658:SPC MD       -  GPS 038                                  348 02 37.3
 AB5658:UTM  18      -  GPS 038                                  349 17 51.6
 AB5658
 AB5658_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0798893185(NAD 83)
 AB5658
 AB5658|---------------------------------------------------------------------|
 AB5658| PID    Reference Object                     Distance      Geod. Az  |
 AB5658|                                                           dddmmss.s |
 AB5658| AB5644 GPS 038                             486.038 METERS 3483802.7 |
 AB5658|---------------------------------------------------------------------|
 AB5658
 AB5658                          SUPERSEDED SURVEY CONTROL
 AB5658
 AB5658  NAD 83(2007)-  38 46 57.37069(N)    076 03 33.64798(W) AD(2002.00) 0
 AB5658  ELLIP H (02/10/07)  -18.628  (m)                       GP(2002.00)    
 AB5658  ELLIP H (08/30/02)  -18.625  (m)                       GP(       ) 4 2
 AB5658  NAD 83(1991)-  38 46 57.37133(N)    076 03 33.64839(W) AD(       ) 1
 AB5658  ELLIP H (08/02/96)  -18.569  (m)                       GP(       ) 3 1
 AB5658
 AB5658.Superseded values are not recommended for survey control.
 AB5658
 AB5658.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5658.See file dsdata.pdf to determine how the superseded data were derived.
 AB5658
 AB5658_MARKER: I = METAL ROD
 AB5658_SETTING: 2 = IMBEDDED OR DRIVEN IN THE GROUND
 AB5658_MAGNETIC: I = MARKER IS A STEEL ROD
 AB5658_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 AB5658_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 AB5658+SATELLITE: SATELLITE OBSERVATIONS - November 09, 2005
 AB5658
 AB5658  HISTORY     - Date     Condition        Report By
 AB5658  HISTORY     - 1996     MONUMENTED       MCCRON
 AB5658  HISTORY     - 20020222 MARK NOT FOUND   USPSQD
 AB5658  HISTORY     - 20051109 GOOD             USPSQD
 AB5658
 AB5658                          STATION DESCRIPTION
 AB5658
 AB5658'DESCRIBED BY J R MCCRONE JR INCORPORATED 1996 (HAS)
 AB5658'THE STATION IS LOCATED ABOUT 1.3 MI (2.1 KM) NORTHEAST OF THE CENTER
 AB5658'OF EASTON.
 AB5658'
 AB5658'TO REACH FROM THE INTERSECTION OF RT 50 RT 328 (MATTHEWSTOWN ROAD), GO
 AB5658'NORTH ON RT 50 FOR 0.35 MI (0.56 KM) TO THE SOUTH ENTRANCE OF A
 AB5658'COMFORT INN HOTEL AND THE STATION ON THE RIGHT.
 AB5658'
 AB5658'THE STATION MARK IS AN IRON ROD DRIVEN IN THE GROUND, 63.0 FT (19.2 M)
 AB5658'EAST OF A LIGHT POLE, 34.5 FT (10.5 M) WEST OF A LIGHT POLE, 12.0 FT
 AB5658'(3.7 M) SOUTH OF THE EDGE OF PAVE OF THE PARKING LOT FOR THE HOTEL,
 AB5658'4.4 FT (1.3 M) NORTH OF A WOODEN SPLIT RAIL FENCE AND ABOUT 217 FT
 AB5658'(66.1 M) EAST OF THE CENTERLINE OF THE WESTBOUND LANE OF RT 50.
 AB5658
 AB5658                          STATION RECOVERY (2002)
 AB5658
 AB5658'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5658'MARK NOT FOUND.
 AB5658
 AB5658                          STATION RECOVERY (2005)
 AB5658
 AB5658'RECOVERY NOTE BY US POWER SQUADRON 2005 (AEM)
 AB5658'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0438 ***********************************************************************
 HU0438  DESIGNATION -  HOTTON
 HU0438  PID         -  HU0438
 HU0438  STATE/COUNTY-  MD/WICOMICO
 HU0438  COUNTRY     -  US
 HU0438  USGS QUAD   -  SALISBURY (2016)
 HU0438
 HU0438                         *CURRENT SURVEY CONTROL
 HU0438  ______________________________________________________________________
 HU0438* NAD 83(1991) POSITION- 38 22 12.05351(N) 075 32 50.48673(W)   ADJUSTED
 HU0438* NAVD 88 ORTHO HEIGHT -    13.355 (meters)       43.82  (feet) ADJUSTED
 HU0438  ______________________________________________________________________
 HU0438  GEOID HEIGHT    -        -35.845 (meters)                     GEOID18
 HU0438  LAPLACE CORR    -         -1.11  (seconds)                    DEFLEC18
 HU0438  DYNAMIC HEIGHT  -         13.346 (meters)       43.79  (feet) COMP
 HU0438  MODELED GRAVITY -    980,005.7   (mgal)                       NAVD 88
 HU0438
 HU0438  HORZ ORDER      -  SECOND
 HU0438  VERT ORDER      -  FIRST     CLASS I
 HU0438
 HU0438.The horizontal coordinates were established by classical geodetic methods
 HU0438.and adjusted by the National Geodetic Survey in January 1992.
 HU0438
 HU0438.The orthometric height was determined by differential leveling and
 HU0438.adjusted by the NATIONAL GEODETIC SURVEY
 HU0438.in June 1991.
 HU0438
 HU0438.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0438.GEOID18 height accuracy estimate available here.
 HU0438
 HU0438.Click photographs - Photos may exist for this station.
 HU0438
 HU0438.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0438
 HU0438.The dynamic height is computed by dividing the NAVD 88
 HU0438.geopotential number by the normal gravity value computed on the
 HU0438.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0438.degrees latitude (g = 980.6199 gals.).
 HU0438
 HU0438.The modeled gravity was interpolated from observed gravity values.
 HU0438
 HU0438. The following values were computed from the NAD 83(1991) position.
 HU0438
 HU0438;                    North         East     Units Scale Factor Converg.
 HU0438;SPC MD       -    79,084.644   526,938.626   MT  0.99998856   +0 54 42.2
 HU0438;SPC MD       -   259,463.54  1,728,797.81   sFT  0.99998856   +0 54 42.2
 HU0438;UTM  18      - 4,247,012.006   452,185.776   MT  0.99962815   -0 20 23.2
 HU0438
 HU0438!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0438!SPC MD       -   1.00000353  x   0.99998856  =   0.99999209
 HU0438!UTM  18      -   1.00000353  x   0.99962815  =   0.99963168
 HU0438
 HU0438:                Primary Azimuth Mark                     Grid Az
 HU0438:SPC MD       -  HOTTON AZ MK 2                           195 31 45.3
 HU0438:UTM  18      -  HOTTON AZ MK 2                           196 46 50.7
 HU0438
 HU0438_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5218547012(NAD 83)
 HU0438
 HU0438|---------------------------------------------------------------------|
 HU0438| PID    Reference Object                     Distance      Geod. Az  |
 HU0438|                                                           dddmmss.s |
 HU0438| HU2769 HOTTON RM 3                          15.174 METERS 05403     |
 HU0438| HU1238 HOTTON AZ MK 2                      APPROX. 0.5 KM 1962627.5 |
 HU0438| HU0437 HOTTON RM 1                          18.980 METERS 20007     |
 HU0438| HU1242 SALISBURY WCPB TV MAST              APPROX. 4.2 KM 2942538.3 |
 HU0438| HU2768 HOTTON RM 4                           9.671 METERS 33952     |
 HU0438| HU0439 HOTTON RM 2                          16.641 METERS 34149     |
 HU0438| HU0440 HOTTON AZ MK                                       3494959.9 |
 HU0438|---------------------------------------------------------------------|
 HU0438
 HU0438                          SUPERSEDED SURVEY CONTROL
 HU0438
 HU0438  NAD 83(1986)-  38 22 12.04489(N)    075 32 50.51201(W) AD(       ) 2
 HU0438  NAD 27      -  38 22 11.62900(N)    075 32 51.78900(W) AD(       ) 2
 HU0438  NGVD 29 (06/12/91)   13.607  (m)           44.64   (f) ADJUSTED    1 1
 HU0438  NGVD 29 (??/??/87)   13.630  (m)           44.72   (f) SUPERSEDED  1 1
 HU0438  NGVD 29              13.72   (m)           45.0    (f) LEVELING    3  
 HU0438
 HU0438.Superseded values are not recommended for survey control.
 HU0438
 HU0438.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0438.See file dsdata.pdf to determine how the superseded data were derived.
 HU0438
 HU0438_MARKER: DS = TRIANGULATION STATION DISK
 HU0438_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0438_STAMPING: HOTTON 1955
 HU0438_MARK LOGO: CGS
 HU0438_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0438+STABILITY: SURFACE MOTION
 HU0438_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0438+SATELLITE: SATELLITE OBSERVATIONS - November 27, 1989
 HU0438
 HU0438  HISTORY     - Date     Condition        Report By
 HU0438  HISTORY     - 1956     MONUMENTED       CGS
 HU0438  HISTORY     - 1963     GOOD             CGS
 HU0438  HISTORY     - 1975     GOOD             NGS
 HU0438  HISTORY     - 19891127 GOOD             NGS
 HU0438
 HU0438                          STATION DESCRIPTION
 HU0438
 HU0438'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (WFD)
 HU0438'THE STATION IS ABOUT 3 MILES EAST OF SALISBURY, 31 FEET SOUTHWEST
 HU0438'OF THE NORTHWEST CORNER OF A CHICKEN HOUSE AND 23 FEET NORTHWEST
 HU0438'OF THE SOUTHWEST CORNER OF THE CHICKEN HOUSE.
 HU0438'
 HU0438'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAYS 50 AND 13
 HU0438'IN THE EAST EDGE OF SALISBURY, GO EAST ON HIGHWAY 50 FOR 2.4
 HU0438'MILES TO A BLACKTOP ROAD ON THE RIGHT (FROM THIS POINT CONTINUE
 HU0438'EAST ON THE HIGHWAY FOR 0.25 MILE TO THE AZIMUTH MARK ON THE
 HU0438'LEFT), TURN RIGHT AND GO SOUTHEAST ON THE BLACKTOP ROAD FOR 0.3
 HU0438'MILE TO A DIRT ROAD ON THE RIGHT, TURN RIGHT ON THE DIRT ROAD
 HU0438'AND GO 0.05 MILE TO THE STATION ON THE LEFT.
 HU0438'
 HU0438'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 HU0438'HOTTON 1955.
 HU0438'
 HU0438'REFERENCE MARK 1 IS 15 FEET EAST OF THE CENTER OF THE DIRT
 HU0438'ROAD.  THE MARK PROJECTS 3 INCHES, AND THE DISK IS STAMPED HOTTON
 HU0438'NO 1 1955.
 HU0438'
 HU0438'REFERENCE MARK 2 IS 15 FEET EAST OF THE CENTER OF THE DIRT
 HU0438'ROAD.  THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED
 HU0438'HOTTON NO 2 1955.
 HU0438'
 HU0438'THE AZIMUTH MARK IS 58 FEET EAST OF THE CENTER OF A DRIVEWAY, 21
 HU0438'FEET NORTH OF THE CENTER OF U.S. HIGHWAY 50, 3 FEET WEST OF A
 HU0438'POWERLINE POLE AND 1 FOOT SOUTH OF A 4 IN X 4 IN WHITE WITNESS
 HU0438'POST.  THE MARK PROJECTS 3 INCHES, AND THE DISK IS STAMPED HOTTON
 HU0438'1955.
 HU0438'
 HU0438'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HU0438
 HU0438                          STATION RECOVERY (1963)
 HU0438
 HU0438'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963
 HU0438'3.4 MI SE FROM SALISBURY.
 HU0438'0.7 MILE EAST ALONG MAIN STREET FROM THE OVERPASS OF THE
 HU0438'PENNSYLVANIA RAILROAD OVER MAIN STREET AT SALISBURY, THENCE 1.95
 HU0438'MILES SOUTHEAST ALONG STATE HIGHWAY 350, THENCE 0.7 MILE NORTH
 HU0438'ALONG TILGHMAN ROAD, 0.05 MILE SOUTH OF JUNCTION OF BLACK TOP
 HU0438'ROAD LEADING NORTHWEST AND SOUTHEAST, 36 FEET EAST OF CENTER LINE
 HU0438'OF THE ROAD, 23.7 FEET NORTHWEST OF SOUTHWEST CORNER OF CHICKEN
 HU0438'HOUSE SIDED WITH BRICK SIDING, 31.8 FEET SOUTHWEST OF NORTHWEST
 HU0438'CORNER OF THE CHICKEN HOUSE, 16.4 FEET WEST OF EAST WALL OF
 HU0438'CHICKEN HOUSE, 23.3 FEET NORTH OF APPROXIMATE CENTER OF A FIELD
 HU0438'ROAD LEADING EAST ALONG SOUTH SIDE OF CHICKEN HOUSE, ABOUT LEVEL
 HU0438'WITH ROAD, AND SET IN THE TOP OF A CONCRETE POST 4 INCHES BELOW
 HU0438'SURFACE OF GROUND.
 HU0438
 HU0438                          STATION RECOVERY (1975)
 HU0438
 HU0438'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN)
 HU0438'THE STATION MARK AND THE AZIMUTH MARK WERE RECOVERED AND FOUND IN
 HU0438'GOOD CONDITION.  REFERENCE MARK 1 WAS RECOVERED WITH THE DISK
 HU0438'REMOVED FROM THE STEM.  THE CENTER OF THE DISK WAS DETERMINED
 HU0438'FROM THE STEM AND THE POINT INTERSECTED.  THE MONUMENT WAS THEN
 HU0438'REMOVED FROM THE GROUND.  REFERENCE MARK 2 WAS FOUND OUT OF
 HU0438'POSITION AND NEARLY IN THE PRONE POSITION.  NEW REFERENCE MARKS
 HU0438'3 AND 4 WERE ESTABLISHED AT THIS DATE.
 HU0438'
 HU0438'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 HU0438'
 HU0438'THE STATION IS LOCATED 3 MILES EAST OF SALISBURY, 2 MILES
 HU0438'SOUTHWEST OF WALSTON AND ON PROPERTY OWNED BY MR. LARRY GREY,
 HU0438'TILGHMAN ROAD, SALISBURY, MARYLAND.  MR. GREYS TELEPHONE NUMBER
 HU0438'IS (301) 749 2180.
 HU0438'
 HU0438'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAYS 50 AND 13 IN
 HU0438'SALISBURY, GO EAST ON U.S. HIGHWAY 50 FOR 2.6 MILES TO TILGHMAN
 HU0438'ROAD ON THE LEFT.  TURN LEFT AND GO NORTHERLY ON TILGHMAN ROAD FOR
 HU0438'0.35 MILE TO THE STATION ON THE RIGHT.  CONTINUE NORTHERLY ON
 HU0438'TILGHMAN ROAD FOR 0.05 MILE TO A T-INTERSECTION.  TURN LEFT AND
 HU0438'GO NORTHWEST ON MERRITS MILL ROAD FOR 0.35 MILE TO A REVERSE
 HU0438'Y-FORK.  TURN SHARP RIGHT AND GO EAST ON OLD U.S. HIGHWAY 50
 HU0438'FOR 0.3 MILE TO THE AZIMUTH MARK ON THE LEFT.
 HU0438'
 HU0438'THE STATION MARK IS A STANDARD DISK STAMPED HOTTON 1955, SET IN THE
 HU0438'TOP OF A 14-INCH MASS OF CONCRETE 3 INCHES BELOW THE SURFACE
 HU0438'OF THE YARD.  IT IS 70 FEET NORTH OF A POWERLINE POLE NUMBERED
 HU0438'11 H, 50.6 FEET NORTHWEST OF THE SOUTHWEST CORNER OF MR. GREYS
 HU0438'HOME, 39 FEET NORTHWEST OF THE WEST ENTRANCE TO MR. GREYS HOME,
 HU0438'35.5 FEET EAST OF THE CENTER OF TILGHMAN ROAD AND 32.5 FEET WEST
 HU0438'OF THE NORTHWEST CORNER OF MR. GREYS HOME.
 HU0438'
 HU0438'REFERENCE MARK 3 IS A STANDARD DISK STAMPED HOTTON 1956 NO 3
 HU0438'1975, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 HU0438'PROJECTS 1-INCH.  IT IS 29 FEET NORTH OF THE NORTHWEST CORNER
 HU0438'OF THE HOUSE, 35 FEET NORTHWEST OF THE NORTHEAST CORNER OF THE
 HU0438'HOUSE, 12 FEET NORTH OF THE CENTER OF THE NORTH DRIVE AROUND THE
 HU0438'HOUSE AND 1 FOOT SOUTH OF A HEDGE.  (NOTE 11B)
 HU0438'
 HU0438'REFERENCE MARK 4 IS A STANDARD DISK STAMPED HOTTON 1956 NO 4
 HU0438'1975, SET IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH
 HU0438'PROJECTS 1-INCH.  IT IS 50 FEET NORTHWEST OF THE NORTHWEST CORNER
 HU0438'OF THE HOUSE, 23 FEET EAST OF THE CENTER OF TILGHMAN ROAD, 6 FEET
 HU0438'NORTH OF THE CENTER OF THE NORTH DRIVE AROUND THE HOUSE AND 1
 HU0438'FOOT SOUTH OF THE HEDGE.  (NOTE 11B)
 HU0438'
 HU0438'THE AZIMUTH MARK IS A STANDARD DISK STAMPED HOTTON 1955, SET IN
 HU0438'THE TOP OF A 16-INCH MASS OF CONCRETE WHICH IS FLUSH WITH THE
 HU0438'SURFACE.  IT IS 21 FEET NORTH OF THE CENTER OF OLD U.S. HIGHWAY
 HU0438'50, 3.5 FEET WEST OF A POWERLINE POLE, 2 FEET EAST OF A WITNESS
 HU0438'POST AND JUST SOUTH OF A CULTIVATED FIELD.
 HU0438'
 HU0438'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU0438'2 MILES SOUTHWEST OF WALSTON.
 HU0438
 HU0438                          STATION RECOVERY (1989)
 HU0438
 HU0438'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1989
 HU0438'3.0 KM (1.86 MI) EASTERLY ALONG U.S. HIGHWAY 50 FROM ITS JUNCTION WITH
 HU0438'STATE HIGHWAY 346 IN SALISBURY, THENCE 0.5 KM (0.31 MI) NORTHERLY
 HU0438'ALONG TILGHMAN ROAD, 0.1 KM (0.06 MI) SOUTH OF THE INTERSECTION OF
 HU0438'MERRITT MILL ROAD, 21.3 M (69.88 FT) NORTH-NORTHEAST OF UTILITY POLE
 HU0438'NUMBER 48345 93294, 20.0 M (65.62 FT) NORTH-NORTHWEST OF THE
 HU0438'SOUTHWEST CORNER OF A HOUSE AT ROUTE 8 BOX 242, 11.4 M (37.40 FT)
 HU0438'SOUTHWEST OF THE NORTHWEST CORNER OF THE HOUSE, 10.7 M (35.10 FT) EAST
 HU0438'OF AND LEVEL WITH THE ROAD CENTERLINE, AND IN A CONCRETE MONUMENT
 HU0438'THAT IS 0.1 M (0.33 FT) BELOW THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0440 ***********************************************************************
 HU0440  DESIGNATION -  HOTTON AZ MK
 HU0440  PID         -  HU0440
 HU0440  STATE/COUNTY-  MD/WICOMICO
 HU0440  COUNTRY     -  US
 HU0440  USGS QUAD   -  SALISBURY (2016)
 HU0440
 HU0440                         *CURRENT SURVEY CONTROL
 HU0440  ______________________________________________________________________
 HU0440* NAD 83(1986) POSITION- 38 22 24.     (N) 075 32 42.     (W)   SCALED
 HU0440* NAVD 88 ORTHO HEIGHT -    13.478 (meters)       44.22  (feet) ADJUSTED
 HU0440  ______________________________________________________________________
 HU0440  GEOID HEIGHT    -        -35.841 (meters)                     GEOID18
 HU0440  DYNAMIC HEIGHT  -         13.470 (meters)       44.19  (feet) COMP
 HU0440  MODELED GRAVITY -    980,006.1   (mgal)                       NAVD 88
 HU0440
 HU0440  VERT ORDER      -  FIRST     CLASS I
 HU0440
 HU0440.The horizontal coordinates were scaled from a map and have
 HU0440.an estimated accuracy of +/- 6 seconds.
 HU0440
 HU0440.The orthometric height was determined by differential leveling and
 HU0440.adjusted by the NATIONAL GEODETIC SURVEY
 HU0440.in June 1991.
 HU0440
 HU0440.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0440.GEOID18 height accuracy estimate available here.
 HU0440
 HU0440.Click photographs - Photos may exist for this station.
 HU0440
 HU0440.The dynamic height is computed by dividing the NAVD 88
 HU0440.geopotential number by the normal gravity value computed on the
 HU0440.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0440.degrees latitude (g = 980.6199 gals.).
 HU0440
 HU0440.The modeled gravity was interpolated from observed gravity values.
 HU0440
 HU0440;                    North         East    Units  Estimated Accuracy
 HU0440;SPC MD       -    79,460.      527,140.      MT  (+/- 180 meters Scaled)
 HU0440
 HU0440_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH523473(NAD 83)
 HU0440
 HU0440                          SUPERSEDED SURVEY CONTROL
 HU0440
 HU0440  NGVD 29 (11/26/84)   13.732  (m)           45.05   (f) ADJUSTED    1 1
 HU0440
 HU0440.Superseded values are not recommended for survey control.
 HU0440
 HU0440.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0440.See file dsdata.pdf to determine how the superseded data were derived.
 HU0440
 HU0440_MARKER: DZ = AZIMUTH MARK DISK
 HU0440_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0440_STAMPING: HUTTON 1955
 HU0440_MARK LOGO: CGS
 HU0440_PROJECTION: PROJECTING 8 CENTIMETERS
 HU0440_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0440+STABILITY: SURFACE MOTION
 HU0440
 HU0440  HISTORY     - Date     Condition        Report By
 HU0440  HISTORY     - 1956     MONUMENTED       CGS
 HU0440  HISTORY     - 1963     GOOD             CGS
 HU0440
 HU0440                          STATION DESCRIPTION
 HU0440
 HU0440'DESCRIBED BY COAST AND GEODETIC SURVEY 1963
 HU0440'3.6 MI SE FROM SALISBURY.
 HU0440'0.7 MILE EAST ALONG MAIN STREET FROM THE OVERPASS OF THE PENNSYLVANIA
 HU0440'RAILROAD OVER MAIN STREET AT SALISBURY, THENCE 1.95 MILES SOUTHEAST
 HU0440'ALONG STATE HIGHWAY 350, THENCE 0.75 MILE NORTH ALONG TILGHMAN ROAD,
 HU0440'THENCE 0.05 MILE SOUTHEAST ALONG A BLACK TOP ROAD, THENCE 0.15 MILE
 HU0440'NORTH ALONG A BLACK TOP ROAD, THENCE 0.05 MILE WEST ALONG U.S.
 HU0440'HIGHWAY 50, 21.1 FEET NORTH OF CENTER LINE OF HIGHWAY, 175 FEET
 HU0440'NORTHWEST AND ACROSS HIGHWAY FROM NORTHWEST CORNER OF A ONE STORY
 HU0440'FRAME BUILDING (CHURCH OF CHRIST AND PARSONAGE COMBINED), 67 FEET
 HU0440'EAST OF CENTER LINE OF EAST ONE OF TWO DRIVEWAYS LEADING TO
 HU0440'RESIDENCE AT 2803 OCEAN CITY RD, 3 1/2 FEET WEST OF POWER POLE
 HU0440'2-55, ABOUT LEVEL WITH HIGHWAY, AND SET IN THE TOP OF A CONCRETE
 HU0440'POST PROJECTING 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1238 ***********************************************************************
 HU1238  DESIGNATION -  HOTTON AZ MK 2
 HU1238  PID         -  HU1238
 HU1238  STATE/COUNTY-  MD/WICOMICO
 HU1238  COUNTRY     -  US
 HU1238  USGS QUAD   -  SALISBURY (2016)
 HU1238
 HU1238                         *CURRENT SURVEY CONTROL
 HU1238  ______________________________________________________________________
 HU1238* NAD 83(1991) POSITION- 38 21 56.08415(N) 075 32 56.47219(W)   NO CHECK
 HU1238* NAVD 88 ORTHO HEIGHT -    12.622 (meters)       41.41  (feet) ADJUSTED
 HU1238  ______________________________________________________________________
 HU1238  GEOID HEIGHT    -        -35.851 (meters)                     GEOID18
 HU1238  LAPLACE CORR    -         -1.11  (seconds)                    DEFLEC18
 HU1238  DYNAMIC HEIGHT  -         12.614 (meters)       41.38  (feet) COMP
 HU1238  MODELED GRAVITY -    980,005.3   (mgal)                       NAVD 88
 HU1238
 HU1238  HORZ ORDER      -  THIRD
 HU1238  VERT ORDER      -  SECOND    CLASS I
 HU1238
 HU1238.The horizontal coordinates were established by classical geodetic methods
 HU1238.and adjusted by the National Geodetic Survey in January 1992.
 HU1238
 HU1238.No horizontal observational check was made to the station.
 HU1238
 HU1238.The orthometric height was determined by differential leveling and
 HU1238.adjusted by the NATIONAL GEODETIC SURVEY
 HU1238.in June 1991.
 HU1238
 HU1238.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1238.GEOID18 height accuracy estimate available here.
 HU1238
 HU1238.Click photographs - Photos may exist for this station.
 HU1238
 HU1238.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1238
 HU1238.The dynamic height is computed by dividing the NAVD 88
 HU1238.geopotential number by the normal gravity value computed on the
 HU1238.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1238.degrees latitude (g = 980.6199 gals.).
 HU1238
 HU1238.The modeled gravity was interpolated from observed gravity values.
 HU1238
 HU1238. The following values were computed from the NAD 83(1991) position.
 HU1238
 HU1238;                    North         East     Units Scale Factor Converg.
 HU1238;SPC MD       -    78,589.997   526,801.176   MT  0.99998924   +0 54 38.5
 HU1238;SPC MD       -   257,840.68  1,728,346.86   sFT  0.99998924   +0 54 38.5
 HU1238;UTM  18      - 4,246,520.657   452,037.609   MT  0.99962833   -0 20 26.8
 HU1238
 HU1238!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1238!SPC MD       -   1.00000364  x   0.99998924  =   0.99999288
 HU1238!UTM  18      -   1.00000364  x   0.99962833  =   0.99963197
 HU1238
 HU1238_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH5203746520(NAD 83)
 HU1238
 HU1238                          SUPERSEDED SURVEY CONTROL
 HU1238
 HU1238  NAD 83(1986)-  38 21 56.07557(N)    075 32 56.49759(W) AD(       ) 3
 HU1238  NGVD 29 (06/12/91)   12.874  (m)           42.24   (f) ADJUSTED    2 1
 HU1238  NGVD 29 (03/20/88)   13.     (m)           43.     (f) VERT ANG       
 HU1238
 HU1238.Superseded values are not recommended for survey control.
 HU1238
 HU1238.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1238.See file dsdata.pdf to determine how the superseded data were derived.
 HU1238
 HU1238_MARKER: DZ = AZIMUTH MARK DISK
 HU1238_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1238_STAMPING: HOTTON 1956 NO 2 1984
 HU1238_MARK LOGO: NGS
 HU1238_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1238+STABILITY: SURFACE MOTION
 HU1238_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1238+SATELLITE: SATELLITE OBSERVATIONS - December 01, 1989
 HU1238
 HU1238  HISTORY     - Date     Condition        Report By
 HU1238  HISTORY     - 19891201 MONUMENTED       NGS
 HU1238
 HU1238                          STATION DESCRIPTION
 HU1238
 HU1238'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989 (RGP)
 HU1238'IN SALISBURY, AT THE INTERSECTION OF TILGHMAN ROAD AND U.S. HIGHWAY
 HU1238'50, IN THE MEDIAN OF THE HIGHWAY, 110.7 M (363.19 FT) WEST OF THE
 HU1238'CENTERLINE OF THE ROAD, 10.3 M (33.79 FT) NORTH OF THE CENTERLINE OF
 HU1238'THE SOUTHBOUND LANES OF THE HIGHWAY, 5.0 M (16.40 FT) NORTHEAST OF A
 HU1238'WITNESS POST, LEVEL WITH THE HIGHWAY, AND IN A CONCRETE MONUMENT THAT
 HU1238'IS 0.05 M (0.16 FT) BELOW THE GROUND SURFACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6779 ***********************************************************************
 JV6779  DESIGNATION -  HOUCK
 JV6779  PID         -  JV6779
 JV6779  STATE/COUNTY-  MD/HARFORD
 JV6779  COUNTRY     -  US
 JV6779  USGS QUAD   -  PHOENIX (2016)
 JV6779
 JV6779                         *CURRENT SURVEY CONTROL
 JV6779  ______________________________________________________________________
 JV6779* NAD 83(2011) POSITION- 39 35 18.86233(N) 076 32 32.42886(W)   ADJUSTED
 JV6779* NAD 83(2011) ELLIP HT-   113.444 (meters)        (06/27/12)   ADJUSTED
 JV6779* NAD 83(2011) EPOCH   -  2010.00
 JV6779* NAVD 88 ORTHO HEIGHT -   145.9   (meters)      479.    (feet) VERTCON3
 JV6779  ______________________________________________________________________
 JV6779  GEOID HEIGHT    -        -32.445 (meters)                     GEOID18
 JV6779  NAD 83(2011) X  -  1,145,488.455 (meters)                     COMP
 JV6779  NAD 83(2011) Y  - -4,786,884.010 (meters)                     COMP
 JV6779  NAD 83(2011) Z  -  4,042,959.041 (meters)                     COMP
 JV6779  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 JV6779
 JV6779  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6779  Standards:
 JV6779         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6779            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6779  -------------------------------------------------------------------
 JV6779  NETWORK    1.79   5.41           0.75   0.68   2.76      0.39520531
 JV6779  -------------------------------------------------------------------
 JV6779  Click here for local accuracies and other accuracy information.
 JV6779
 JV6779.The horizontal coordinates were established by GPS observations
 JV6779.and adjusted by the National Geodetic Survey in June 2012.
 JV6779
 JV6779.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6779.been affixed to the stable North American tectonic plate. See 
 JV6779.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6779
 JV6779.The horizontal coordinates are valid at the epoch date displayed above
 JV6779.which is a decimal equivalence of Year/Month/Day.
 JV6779
 JV6779.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6779.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6779
 JV6779.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6779.GEOID18 height accuracy estimate available here.
 JV6779
 JV6779.Click photographs - Photos may exist for this station.
 JV6779
 JV6779.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6779
 JV6779.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6779
 JV6779.The ellipsoidal height was determined by GPS observations
 JV6779.and is referenced to NAD 83.
 JV6779
 JV6779. The following values were computed from the NAD 83(2011) position.
 JV6779
 JV6779;                    North         East     Units Scale Factor Converg.
 JV6779;SPC MD       -   213,447.520   439,315.679   MT  1.00002718   +0 17 14.1
 JV6779;SPC MD       -   700,285.74  1,441,321.52   sFT  1.00002718   +0 17 14.1
 JV6779;UTM  18      - 4,383,230.618   367,556.443   MT  0.99981597   -0 58 58.9
 JV6779
 JV6779!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6779!SPC MD       -   0.99998220  x   1.00002718  =   1.00000938
 JV6779!UTM  18      -   0.99998220  x   0.99981597  =   0.99979818
 JV6779
 JV6779_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6755683230(NAD 83)
 JV6779
 JV6779                          SUPERSEDED SURVEY CONTROL
 JV6779
 JV6779  NAD 83(2007)-  39 35 18.86249(N)    076 32 32.42965(W) AD(2002.00) 0
 JV6779  ELLIP H (02/10/07)  113.462  (m)                       GP(2002.00)    
 JV6779  ELLIP H (09/18/02)  113.471  (m)                       GP(       ) 4 2
 JV6779  NAD 83(1991)-  39 35 18.86269(N)    076 32 32.42810(W) AD(       ) 1
 JV6779  ELLIP H (01/27/92)  113.471  (m)                       GP(       ) 4 1
 JV6779  NAD 83(1986)-  39 35 18.85557(N)    076 32 32.43460(W) AD(       ) 1
 JV6779  NGVD 29 (06/18/91)  146.1    (m)  UNKNOWN  model used  GPS OBS        
 JV6779
 JV6779.Superseded values are not recommended for survey control.
 JV6779
 JV6779.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6779.See file dsdata.pdf to determine how the superseded data were derived.
 JV6779
 JV6779_MARKER: DD = SURVEY DISK
 JV6779_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6779_STAMPING: 67 HOUCK 1989
 JV6779_MARK LOGO: MD-025
 JV6779_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6779_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6779+STABILITY: SURFACE MOTION
 JV6779_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6779+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6779
 JV6779  HISTORY     - Date     Condition        Report By
 JV6779  HISTORY     - 1989     MONUMENTED       RDA
 JV6779
 JV6779                          STATION DESCRIPTION
 JV6779
 JV6779'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6779'THE STATION IS LOCATED IN WESTERN HARFORD COUNTY, MARYLAND ABOUT 2.5
 JV6779'MILES SOUTHWEST OF THE VILLAGE OF MADONNA.
 JV6779'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 146 AND
 JV6779'STATE HIGHWAY 152 PROCEED NORTHWEST ALONG HIGHWAY 146 0.2 MILES TO ITS
 JV6779'INTERSECTION WITH HOUCKS MILL ROAD.  TURN LEFT AND PROCEED WEST ALONG
 JV6779'HOUCKS MILL ROAD 1.65 MILES TO THE STATION ON THE RIGHT.
 JV6779'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6779'ABOUT 1 INCH BELOW GROUND STAMPED 67 HOUCK 1989.  THE STATION IS 2.0
 JV6779'FEET SOUTH OF A SPLIT RAIL FENCE, 12.9 FEET NORTH OF THE CENTERLINE OF
 JV6779'HOUCKS MILL ROAD, AND 32.0 FEET NORTH OF G AND E POLE NUMBER 142583.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5651 ***********************************************************************
 HV5651  DESIGNATION -  HOUGH
 HV5651  PID         -  HV5651
 HV5651  STATE/COUNTY-  MD/QUEEN ANNES
 HV5651  COUNTRY     -  US
 HV5651  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5651
 HV5651                         *CURRENT SURVEY CONTROL
 HV5651  ______________________________________________________________________
 HV5651* NAD 83(1991) POSITION- 38 51 20.23761(N) 076 11 59.88132(W)   ADJUSTED
 HV5651* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5651  ______________________________________________________________________
 HV5651  GEOID HEIGHT    -        -34.217 (meters)                     GEOID18
 HV5651  LAPLACE CORR    -         -4.63  (seconds)                    DEFLEC18
 HV5651  HORZ ORDER      -  THIRD
 HV5651
 HV5651.The horizontal coordinates were established by classical geodetic methods
 HV5651.and adjusted by the National Geodetic Survey in January 1992.
 HV5651
 HV5651.The orthometric height was scaled from a topographic map.
 HV5651
 HV5651.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5651.GEOID18 height accuracy estimate available here.
 HV5651
 HV5651.Click photographs - Photos may exist for this station.
 HV5651
 HV5651.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5651
 HV5651. The following values were computed from the NAD 83(1991) position.
 HV5651
 HV5651;                    North         East     Units Scale Factor Converg.
 HV5651;SPC MD       -   132,283.239   469,440.236   MT  0.99994991   +0 30 07.7
 HV5651;SPC MD       -   433,999.26  1,540,155.17   sFT  0.99994991   +0 30 07.7
 HV5651;UTM  18      - 4,301,439.023   395,880.274   MT  0.99973349   -0 45 10.4
 HV5651
 HV5651!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5651!SPC MD       -   1.00000540  x   0.99994991  =   0.99995531
 HV5651!UTM  18      -   1.00000540  x   0.99973349  =   0.99973889
 HV5651
 HV5651:                Primary Azimuth Mark                     Grid Az
 HV5651:SPC MD       -  WON                                      008 59 03.2
 HV5651:UTM  18      -  WON                                      010 14 21.3
 HV5651
 HV5651_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9588001439(NAD 83)
 HV5651
 HV5651|---------------------------------------------------------------------|
 HV5651| PID    Reference Object                     Distance      Geod. Az  |
 HV5651|                                                           dddmmss.s |
 HV5651| HV5681 WON                                 APPROX. 0.7 KM 0092910.9 |
 HV5651|---------------------------------------------------------------------|
 HV5651
 HV5651                          SUPERSEDED SURVEY CONTROL
 HV5651
 HV5651  NAD 83(1986)-  38 51 20.23321(N)    076 11 59.89459(W) AD(       ) 3
 HV5651  NAD 27      -  38 51 19.79600(N)    076 12 01.08300(W) AD(       ) 3
 HV5651  USSD        -  38 51 20.18500(N)    076 12 00.85900(W) AD(       ) 3
 HV5651
 HV5651.Superseded values are not recommended for survey control.
 HV5651
 HV5651.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5651.See file dsdata.pdf to determine how the superseded data were derived.
 HV5651
 HV5651_MARKER: Z = SEE DESCRIPTION
 HV5651_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5651_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5651+STABILITY: SURFACE MOTION
 HV5651
 HV5651  HISTORY     - Date     Condition        Report By
 HV5651  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5651  HISTORY     - 1940     MARK NOT FOUND   CGS
 HV5651
 HV5651                          STATION DESCRIPTION
 HV5651
 HV5651'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5651'STATION IS ON THE NORTHWESTERN SIDE OF ENTRANCE TO WYE RIVER, ON
 HV5651'POINT ABOUT 3/8 MILE NE OF MILES RIVER AND 1/2 MILE SW OF N END OF
 HV5651'BRUFFS ISLAND, ON A GRASS POINT, ABOUT 1 FOOT ABOVE HIGH WATER, 16
 HV5651'YARDS N OF SHORE, 22 YARDS S OF SHORE, 15 YARDS W OF EXTREME END
 HV5651'OF POINT, 11 YARDS E OF SMALL POOL IN MARSH, AND 200 YARDS E OF
 HV5651'WOODS.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV5651'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV5651'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV5651'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV5651'SUBSURFACE MARK IS CENTER OF 2-INCH TILE PIPE SET IN CONCRETE.
 HV5651'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 HV5651'FOLLOWS--WINDMILL, 4 1/4 MILES, S 11 DEG 17 MIN W.  TALL, SLENDER
 HV5651'TREE IN WOODS, 200 YARDS N 78 DEG 34 MIN W.  BLACK WALNUT TREE,
 HV5651'200 YARDS, N 11 DEG 7 MIN W.  NEAR PEAK OF BUILDING, 2-3/8 MILES,
 HV5651'N 16 DEG 51 MIN E. RIGHT SIDE OF CHIMNEY OF HOUSE, 2-7/8 MILES, N
 HV5651'26 DEG 49 MIN E. NEAR PEAK OF LONG BARN, 1-1/4 MILES, S 41 DEG 48
 HV5651'MIN E. PIAZZA POST OF HOUSE IN WOODS, 1/2 MILE, N 71 DEG 43 MIN E.
 HV5651'WINDMILL, 3/4 MILE, N 37 DEG 53 MIN E.
 HV5651
 HV5651                          STATION RECOVERY (1940)
 HV5651
 HV5651'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5651'STATION MARK SEARCHED FOR BUT NOT FOUND.  POINT COVERED WITH THICK
 HV5651'LAYER OF WEEDS AND IS UNDER WATER AT HIGH TIDE.  REFERENCES COULD
 HV5651'NOT BE CHECKED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2083 ***********************************************************************
 HU2083  DESIGNATION -  HOUSE MSFC 1909
 HU2083  PID         -  HU2083
 HU2083  STATE/COUNTY-  MD/DORCHESTER
 HU2083  COUNTRY     -  US
 HU2083  USGS QUAD   -  PRESTON (2016)
 HU2083
 HU2083                         *CURRENT SURVEY CONTROL
 HU2083  ______________________________________________________________________
 HU2083* NAD 83(1991) POSITION- 38 37 39.58203(N) 075 58 16.20668(W)   ADJUSTED
 HU2083* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU2083  ______________________________________________________________________
 HU2083  GEOID HEIGHT    -        -35.115 (meters)                     GEOID18
 HU2083  LAPLACE CORR    -         -3.13  (seconds)                    DEFLEC18
 HU2083  HORZ ORDER      -  THIRD
 HU2083
 HU2083.The horizontal coordinates were established by classical geodetic methods
 HU2083.and adjusted by the National Geodetic Survey in January 1992.
 HU2083
 HU2083.The orthometric height was scaled from a topographic map.
 HU2083
 HU2083.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2083.GEOID18 height accuracy estimate available here.
 HU2083
 HU2083.Click photographs - Photos may exist for this station.
 HU2083
 HU2083.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2083
 HU2083. The following values were computed from the NAD 83(1991) position.
 HU2083
 HU2083;                    North         East     Units Scale Factor Converg.
 HU2083;SPC MD       -   107,179.002   489,583.630   MT  0.99995918   +0 38 44.6
 HU2083;SPC MD       -   351,636.44  1,606,242.29   sFT  0.99995918   +0 38 44.6
 HU2083;UTM  18      - 4,275,906.385   415,464.949   MT  0.99968800   -0 36 22.7
 HU2083
 HU2083!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2083!SPC MD       -   1.00000555  x   0.99995918  =   0.99996473
 HU2083!UTM  18      -   1.00000555  x   0.99968800  =   0.99969354
 HU2083
 HU2083:                Primary Azimuth Mark                     Grid Az
 HU2083:SPC MD       -  SAW MSFC 1909                            185 43 42.9
 HU2083:UTM  18      -  SAW MSFC 1909                            186 58 50.2
 HU2083
 HU2083_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1546475906(NAD 83)
 HU2083
 HU2083|---------------------------------------------------------------------|
 HU2083| PID    Reference Object                     Distance      Geod. Az  |
 HU2083|                                                           dddmmss.s |
 HU2083| HU2067 SAW MSFC 1909                       APPROX. 0.6 KM 1862227.5 |
 HU2083|---------------------------------------------------------------------|
 HU2083
 HU2083                          SUPERSEDED SURVEY CONTROL
 HU2083
 HU2083  NAD 83(1986)-  38 37 39.57836(N)    075 58 16.22454(W) AD(       ) 3
 HU2083  NAD 27      -  38 37 39.14600(N)    075 58 17.43400(W) AD(       ) 3
 HU2083  USSD        -  38 37 39.55100(N)    075 58 17.24000(W) AD(       ) 3
 HU2083
 HU2083.Superseded values are not recommended for survey control.
 HU2083
 HU2083.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2083.See file dsdata.pdf to determine how the superseded data were derived.
 HU2083
 HU2083_MARKER: H = DRILL HOLE
 HU2083_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2083_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2083+STABILITY: SURFACE MOTION
 HU2083
 HU2083  HISTORY     - Date     Condition        Report By
 HU2083  HISTORY     - 1909     MONUMENTED       MDSFC
 HU2083  HISTORY     - 1941     GOOD             CGS
 HU2083  HISTORY     - 1961     MARK NOT FOUND   CGS
 HU2083
 HU2083                          STATION DESCRIPTION
 HU2083
 HU2083'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HU2083'ON THE EASTERN SHORE OF CHOPTANK RIVER, ABOUT 1/4 MILE S OF
 HU2083'ENTRANCE TO CABIN CREEK, 1 MILE N OF ENTRANCE TO WARWICK RIVER,
 HU2083'AND ON THE S SIDE OF A SMALL COVE, ON MARSH, ABOUT 1 FOOT ABOVE
 HU2083'HIGH WATER, 14 YARDS S OF SHORE, 26 YARDS SE OF SHORE, 35 YARDS SW
 HU2083'BY W OF SHORE AND MOUTH OF SMALL CREEK IN MARSH, AND 175 YARDS N
 HU2083'OF WOODS.  STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP
 HU2083'OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HU2083'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 HU2083'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP
 HU2083'OF POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH
 HU2083'DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF
 HU2083'THE MONUMENT.  DISTANCES TO VARIOUS
 HU2083'POINTS OF REFERENCE ARE AS FOLLOWS--TWO PINE TREES, S 12 DEG 11
 HU2083'MIN W.  LEFT PEAK OF SHANTY, 1-1/8 MILES, N 46 DEG 49 MIN W.
 HU2083'CHIMNEY OUTSIDE NEAR END OF HOUSE, 1-1/8 MILES, N 42 DEG 32 MIN W.
 HU2083'NEAR PEAK OF HOUSE, 1-1/8 MILES, N 36 DEG 09 MIN W.  TANGENT OF
 HU2083'POINT, 1/4 MILE, N 01 DEG 40 MIN W.  STACK OF CANNERY AT
 HU2083'CHOPTANK, 4 MILES, N 05 DEG 31 MIN E.  NEAR PEAK OF SHACK, 7/8 MILE,
 HU2083'N 46 DEG 10 MIN E.
 HU2083
 HU2083                          STATION RECOVERY (1941)
 HU2083
 HU2083'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HU2083'STATION RECOVERED.  IT IS NOW COVERED EXCEPT AT EXTREME LOW WATER
 HU2083'AND THE TOP OF THE CONCRETE HAS BEEN CARRIED AWAY.  ONLY THE STUBS
 HU2083'ON WHICH THE INSTRUMENT WAS SET SERVE AS MARKERS.
 HU2083
 HU2083                          STATION RECOVERY (1961)
 HU2083
 HU2083'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HU2083'STATION REPORTED AS BEING COVERED EXCEPT AT EXTREME LOW WATER IN
 HU2083'1941.  IT IS RECOMMENDED THIS STATION BE CONSIDERED AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5703 ***********************************************************************
 JV5703  DESIGNATION -  HOUSE USE 1917
 JV5703  PID         -  JV5703
 JV5703  STATE/COUNTY-  MD/C OF BALTIMORE
 JV5703  COUNTRY     -  US
 JV5703  USGS QUAD   -  CURTIS BAY (2016)
 JV5703
 JV5703                         *CURRENT SURVEY CONTROL
 JV5703  ______________________________________________________________________
 JV5703* NAD 83(1991) POSITION- 39 13 35.63282(N) 076 34 50.34153(W)   ADJUSTED
 JV5703* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5703  ______________________________________________________________________
 JV5703  GEOID HEIGHT    -        -32.890 (meters)                     GEOID18
 JV5703  LAPLACE CORR    -         -4.49  (seconds)                    DEFLEC18
 JV5703  HORZ ORDER      -  THIRD
 JV5703
 JV5703.The horizontal coordinates were established by classical geodetic methods
 JV5703.and adjusted by the National Geodetic Survey in January 1992.
 JV5703
 JV5703.The orthometric height was scaled from a topographic map.
 JV5703
 JV5703.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5703.GEOID18 height accuracy estimate available here.
 JV5703
 JV5703.Click photographs - Photos may exist for this station.
 JV5703
 JV5703.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5703
 JV5703. The following values were computed from the NAD 83(1991) position.
 JV5703
 JV5703;                    North         East     Units Scale Factor Converg.
 JV5703;SPC MD       -   173,241.022   436,209.343   MT  0.99996854   +0 15 47.5
 JV5703;SPC MD       -   568,374.92  1,431,130.15   sFT  0.99996854   +0 15 47.5
 JV5703;UTM  18      - 4,343,109.511   363,562.780   MT  0.99982921   -0 59 59.1
 JV5703
 JV5703!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5703!SPC MD       -   1.00000520  x   0.99996854  =   0.99997374
 JV5703!UTM  18      -   1.00000520  x   0.99982921  =   0.99983441
 JV5703
 JV5703:                Primary Azimuth Mark                     Grid Az
 JV5703:SPC MD       -  WAGNERS CHURCH SPIRE                     062 45 25.0
 JV5703:UTM  18      -  WAGNERS CHURCH SPIRE                     064 01 11.6
 JV5703
 JV5703_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6356243109(NAD 83)
 JV5703
 JV5703|---------------------------------------------------------------------|
 JV5703| PID    Reference Object                     Distance      Geod. Az  |
 JV5703|                                                           dddmmss.s |
 JV5703| JV5720 WAGNERS CHURCH SPIRE                APPROX. 1.1 KM 0630112.5 |
 JV5703| JV5714 STONE                               366.400 METERS 10502     |
 JV5703|---------------------------------------------------------------------|
 JV5703
 JV5703                          SUPERSEDED SURVEY CONTROL
 JV5703
 JV5703  NAD 83(1986)-  39 13 35.62909(N)    076 34 50.35079(W) AD(       ) 3
 JV5703  NAD 27      -  39 13 35.24000(N)    076 34 51.47500(W) AD(       ) 3
 JV5703  USSD        -  39 13 35.60500(N)    076 34 51.31600(W) AD(       ) 3
 JV5703
 JV5703.Superseded values are not recommended for survey control.
 JV5703
 JV5703.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5703.See file dsdata.pdf to determine how the superseded data were derived.
 JV5703
 JV5703_MARKER: DD = SURVEY DISK
 JV5703_SETTING: 0 = UNSPECIFIED SETTING
 JV5703_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5703
 JV5703  HISTORY     - Date     Condition        Report By
 JV5703  HISTORY     - 1917     MONUMENTED       USACE
 JV5703
 JV5703                          STATION DESCRIPTION
 JV5703
 JV5703'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1917
 JV5703'AT THE W SIDE OF STONE HOUSE COVE AND E OF EAGLES HOME.  THE
 JV5703'STATION IS MARKED BY A CONCRETE MONUMENT CENTERED BY A STANDARD
 JV5703'U.S.E. BRONZE MARKER.  IT IS 7.41 METERS (24.3 FEET) NEARLY E FROM
 JV5703'THE SE CORNER OF THE PIAZZA OF EAGLES HOME, AND 13.87 METERS (45.5
 JV5703'FEET) SE FROM THE NE CORNER OF THE PIAZZA.  THIS STATION REPORTED
 JV5703'LOST IN 1924.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6676 ***********************************************************************
 HV6676  DESIGNATION -  HOW 1907
 HV6676  PID         -  HV6676
 HV6676  STATE/COUNTY-  MD/ST MARYS
 HV6676  COUNTRY     -  US
 HV6676  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV6676
 HV6676                         *CURRENT SURVEY CONTROL
 HV6676  ______________________________________________________________________
 HV6676* NAD 83(1991) POSITION- 38 17 47.31463(N) 076 27 43.39557(W)   ADJUSTED
 HV6676* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV6676  ______________________________________________________________________
 HV6676  GEOID HEIGHT    -        -34.421 (meters)                     GEOID18
 HV6676  LAPLACE CORR    -         -5.69  (seconds)                    DEFLEC18
 HV6676  HORZ ORDER      -  THIRD
 HV6676
 HV6676.The horizontal coordinates were established by classical geodetic methods
 HV6676.and adjusted by the National Geodetic Survey in January 1992.
 HV6676
 HV6676.The orthometric height was scaled from a topographic map.
 HV6676
 HV6676.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6676.GEOID18 height accuracy estimate available here.
 HV6676
 HV6676.Click photographs - Photos may exist for this station.
 HV6676
 HV6676.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6676
 HV6676. The following values were computed from the NAD 83(1991) position.
 HV6676
 HV6676;                    North         East     Units Scale Factor Converg.
 HV6676;SPC MD       -    70,050.367   447,057.995   MT  1.00000061   +0 20 15.5
 HV6676;SPC MD       -   229,823.58  1,466,722.77   sFT  1.00000061   +0 20 15.5
 HV6676;UTM  18      - 4,239,721.544   372,150.790   MT  0.99980130   -0 54 22.3
 HV6676
 HV6676!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6676!SPC MD       -   1.00000529  x   1.00000061  =   1.00000590
 HV6676!UTM  18      -   1.00000529  x   0.99980130  =   0.99980658
 HV6676
 HV6676:                Primary Azimuth Mark                     Grid Az
 HV6676:SPC MD       -  BEN                                      332 04 24.0
 HV6676:UTM  18      -  BEN                                      333 19 01.8
 HV6676
 HV6676_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7215039721(NAD 83)
 HV6676
 HV6676|---------------------------------------------------------------------|
 HV6676| PID    Reference Object                     Distance      Geod. Az  |
 HV6676|                                                           dddmmss.s |
 HV6676| HV6698 AVONDALE CATHOLIC CHURCH MSFC       APPROX. 3.4 KM 0013644.4 |
 HV6676| HV6711 SOLOMONS ISLAND ME CHURCH           APPROX. 3.0 KM 0032026.4 |
 HV6676| HV6730 BEN                                 APPROX. 1.0 KM 3322439.5 |
 HV6676|---------------------------------------------------------------------|
 HV6676
 HV6676                          SUPERSEDED SURVEY CONTROL
 HV6676
 HV6676  NAD 83(1986)-  38 17 47.31501(N)    076 27 43.41021(W) AD(       ) 3
 HV6676  NAD 27      -  38 17 46.87400(N)    076 27 44.56200(W) AD(       ) 3
 HV6676  USSD        -  38 17 47.24200(N)    076 27 44.33000(W) AD(       ) 3
 HV6676
 HV6676.Superseded values are not recommended for survey control.
 HV6676
 HV6676.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6676.See file dsdata.pdf to determine how the superseded data were derived.
 HV6676
 HV6676_MARKER: N = NAIL
 HV6676_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6676_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6676+STABILITY: SURFACE MOTION
 HV6676
 HV6676  HISTORY     - Date     Condition        Report By
 HV6676  HISTORY     - 1907     MONUMENTED       CGS
 HV6676  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6676
 HV6676                          STATION DESCRIPTION
 HV6676
 HV6676'DESCRIBED BY COAST AND GEODETIC SURVEY 1907 (OWF)
 HV6676'STATION IS ON THE SW SHORE OF PATUXENT RIVER, S OF AND DIRECTLY
 HV6676'ACROSS FROM SOLOMONS ISLAND, ON A SAND BEACH, ABOUT 12 METERS
 HV6676'BACK FROM HIGH-WATER MARK, AND ABOUT 2 FEET ABOVE HIGH
 HV6676'WATER.  IT IS ABOUT 1,850 METERS UP THE SHORE FROM MILLSTONE
 HV6676'LANDING AND 150 METERS ABOVE THE OUTLET TO A LARGE POND.  STATION
 HV6676'IS MARKED BY A TILE PIPE SET IN CEMENT ABOUT LEVEL WITH SURFACE
 HV6676'OF GROUND.  A NAIL IN THE CEMENT MARKS EXACT CENTER.  DISTANCES
 HV6676'AND AZIMUTHS TO POINTS OF REFERENCE ARE AS FOLLOWS--NORTH
 HV6676'GABLE OF DWELLING, 91 DEG 01 MIN.  CENTER OF E ONE OF TWO TWIN
 HV6676'HOLLY TREES BETWEEN THE ROAD AND THE FENCE, BLAZED WITH
 HV6676'TRIANGLE INTO EACH VERTEX OF WHICH A NAIL WAS DRIVEN, 28.96
 HV6676'METERS (95.0 FEET), 38 DEG 51 MIN.  CENTER OF 13-INCH CEDAR TREE
 HV6676'ON S SIDE OF ROAD, 54 DEG 19 MIN.  CENTER OF 14-INCH
 HV6676'CEDAR TREE STANDING 9.14 METERS (30.0 FEET) W OF ENTRANCE TO
 HV6676'DWELLING, 119 DEG 21 MIN.
 HV6676
 HV6676                          STATION RECOVERY (1942)
 HV6676
 HV6676'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6676'THIS STATION WAS THOROUGHLY SEARCHED FOR BY TWO MEN FOR TWO
 HV6676'HOURS, BUT NO TRACE OF IT COULD BE FOUND.  ACCORDING TO A LOCAL
 HV6676'RESIDENT, THE SAND BEACH IS SEVERAL FEET HIGHER THAN IT WAS
 HV6676'TEN YEARS AGO.  IT IS RECOMMENDED THAT THIS STATION BE CLASSIFIED
 HV6676'AS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1447 ***********************************************************************
 HU1447  DESIGNATION -  HOWARD
 HU1447  PID         -  HU1447
 HU1447  STATE/COUNTY-  MD/WORCESTER
 HU1447  COUNTRY     -  US
 HU1447  USGS QUAD   -  ASSAWOMAN BAY (2016)
 HU1447
 HU1447                         *CURRENT SURVEY CONTROL
 HU1447  ______________________________________________________________________
 HU1447* NAD 83(1991) POSITION- 38 24 11.50102(N) 075 03 35.52849(W)   ADJUSTED
 HU1447* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HU1447  ______________________________________________________________________
 HU1447  GEOID HEIGHT    -        -35.983 (meters)                     GEOID18
 HU1447  LAPLACE CORR    -         -0.76  (seconds)                    DEFLEC18
 HU1447  HORZ ORDER      -  THIRD
 HU1447
 HU1447.The horizontal coordinates were established by classical geodetic methods
 HU1447.and adjusted by the National Geodetic Survey in January 1992.
 HU1447
 HU1447.The orthometric height was scaled from a topographic map.
 HU1447
 HU1447.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1447.GEOID18 height accuracy estimate available here.
 HU1447
 HU1447.Click photographs - Photos may exist for this station.
 HU1447
 HU1447.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1447
 HU1447. The following values were computed from the NAD 83(1991) position.
 HU1447
 HU1447;                    North         East     Units Scale Factor Converg.
 HU1447;SPC MD       -    83,558.443   569,453.740   MT  0.99998365   +1 13 03.7
 HU1447;SPC MD       -   274,141.33  1,868,282.81   sFT  0.99998365   +1 13 03.7
 HU1447;UTM  18      - 4,250,553.549   494,772.568   MT  0.99960034   -0 02 13.9
 HU1447
 HU1447!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1447!SPC MD       -   1.00000521  x   0.99998365  =   0.99998886
 HU1447!UTM  18      -   1.00000521  x   0.99960034  =   0.99960555
 HU1447
 HU1447:                Primary Azimuth Mark                     Grid Az
 HU1447:SPC MD       -  REEDY                                    193 22 36.9
 HU1447:UTM  18      -  REEDY                                    194 37 54.5
 HU1447
 HU1447_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH9477250553(NAD 83)
 HU1447
 HU1447|---------------------------------------------------------------------|
 HU1447| PID    Reference Object                     Distance      Geod. Az  |
 HU1447|                                                           dddmmss.s |
 HU1447| DC7408 HOWARD RM                            56.100 METERS 06729     |
 HU1447| HU1455 REEDY                               APPROX. 3.2 KM 1943540.6 |
 HU1447|---------------------------------------------------------------------|
 HU1447
 HU1447                          SUPERSEDED SURVEY CONTROL
 HU1447
 HU1447  NAD 83(1986)-  38 24 11.48251(N)    075 03 35.55442(W) AD(       ) 3
 HU1447  NAD 27      -  38 24 11.07316(N)    075 03 36.90558(W) AD(       ) 3
 HU1447  USSD        -  38 24 11.30500(N)    075 03 36.66100(W) AD(       ) 3
 HU1447
 HU1447.Superseded values are not recommended for survey control.
 HU1447
 HU1447.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1447.See file dsdata.pdf to determine how the superseded data were derived.
 HU1447
 HU1447_MARKER: DS = TRIANGULATION STATION DISK
 HU1447_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 HU1447
 HU1447  HISTORY     - Date     Condition        Report By
 HU1447  HISTORY     - 1909     MONUMENTED       CGS
 HU1447  HISTORY     - 1929     SEE DESCRIPTION  CGS
 HU1447  HISTORY     - 1942     MARK NOT FOUND   CGS
 HU1447  HISTORY     - 1958     MARK NOT FOUND   CGS
 HU1447  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1447  HISTORY     - 20031230 MARK NOT FOUND   USPSQD
 HU1447
 HU1447                          STATION DESCRIPTION
 HU1447
 HU1447'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (ES)
 HU1447'ON EASTERN SIDE OF ASSAWOMAN BAY, SW OF THE ISLE OF WIGHT LIFE
 HU1447'SAVING STATION, ON A SAND HILL SOME 15 OR 20 FEET HIGH.  MARKED
 HU1447'BY A BOTTLE SET IN CEMENT NEARLY 3 FEET BELOW THE SURFACE OF THE
 HU1447'GROUND.  ABOVE THIS IS A BLOCK OF CEMENT ABOUT 15 INCHES IN
 HU1447'DIAMETER, IN THE CENTER OF WHICH IS A STANDARD BRONZE DISK SET IN
 HU1447'TOP OF A 1-INCH GALVANIZED-IRON PIPE 18 INCHES LONG.  A
 HU1447'REFERENCE MARK WAS SET AT THE SW CORNER OF THE LIFE-SAVING
 HU1447'STATION BUILDING.  IT IS A BOTTLE IN THE CENTER OF A
 HU1447'CEMENT POST 8 INCHES SQUARE AND IS 56.10 METERS (184.1 FEET)
 HU1447'FROM THE STATION N 67 DEG 29 MIN E.  OTHER
 HU1447'REFERENCES WERE AS FOLLOWS--HOUSE CHIMNEY, 167 PACES, N 66 DEG
 HU1447'28 MIN W.  HOUSE CHIMNEY, 170 PACES, N 34 DEG 08 MIN W, CHIMNEY OF
 HU1447'LIFE-SAVING STATION, N 60 DEG 45 MIN E.
 HU1447
 HU1447                          STATION RECOVERY (1929)
 HU1447
 HU1447'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (CFE)
 HU1447'STATION FOUND BLOWN OUT.  BOTH SURFACE AND SUB-SURFACE MARKS WERE
 HU1447'FOUND MOVED.  THE REFERENCE MARK AT THE CORNER OF THE LIFE-SAVING
 HU1447'STATION WAS FOUND IN GOOD CONDITION.
 HU1447
 HU1447                          STATION RECOVERY (1942)
 HU1447
 HU1447'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HU1447'THIS STATION WAS FOUND DESTROYED IN 1929.  THE REFERENCE MARK WAS
 HU1447'FOUND AT THE SW CORNER OF THE ISLE OF WIGHT LIFE SAVING STATION,
 HU1447'ABOUT 5.4 MILES N OF OCEAN CITY.
 HU1447'
 HU1447'THE REFERENCE MARK IS A BOTTLE IN THE CENTER OF A CEMENT POST
 HU1447'8 INCHES SQUARE.  THE MARK IS IN GOOD CONDITION.
 HU1447
 HU1447                          STATION RECOVERY (1958)
 HU1447
 HU1447'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JAW)
 HU1447'STATION WAS SEARCHED FOR AS DESCRIBED.  THIS STATION WAS NOT
 HU1447'FOUND.  THIS SECTION IS NOW BUILT UP AND IF THE OLD STATION IS
 HU1447'STILL THERE IT IS POSSIBLE THAT IT IS UNDER A HOUSE OR AN
 HU1447'APARTMENT.  A 25 FT. ADDITION HAS BEEN BUILT ONTO THE OLD LIFE
 HU1447'SAVING STATION WHICH IS NOW THE DUNES CLUB.  THIS ADDITION
 HU1447'COVERED THE SW CORNER OF THE BUILDING WHERE A REFERENCE MARK WAS
 HU1447'SET.  IF THE RM IS STILL THERE IT WOULD BE UNDER WHAT IS NOW THE
 HU1447'MAIN ENTRANCE TO THE DUNES CLUB.  THE DUNES CLUB IS ON
 HU1447'PHILADELPHIA AVE. BETWEEN 85TH AND 86TH STREETS.
 HU1447
 HU1447                          STATION RECOVERY (1962)
 HU1447
 HU1447'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (WMR)
 HU1447'LOST.  THE AREA WAS SEARCHED BUT THE MARK COULD NOT BE FOUND.  THIS
 HU1447'STATION WAS ALSO REPORTED LOST IN 1958 BY J.A.W.
 HU1447
 HU1447                          STATION RECOVERY (2003)
 HU1447
 HU1447'RECOVERY NOTE BY US POWER SQUADRON 2003 (KPM)
 HU1447'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5282 ***********************************************************************
 JV5282  DESIGNATION -  HOWARD
 JV5282  PID         -  JV5282
 JV5282  STATE/COUNTY-  MD/BALTIMORE
 JV5282  COUNTRY     -  US
 JV5282  USGS QUAD   -  SPARROWS POINT (2016)
 JV5282
 JV5282                         *CURRENT SURVEY CONTROL
 JV5282  ______________________________________________________________________
 JV5282* NAD 83(1991) POSITION- 39 11 39.25184(N) 076 26 30.34461(W)   ADJUSTED
 JV5282* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5282  ______________________________________________________________________
 JV5282  GEOID HEIGHT    -        -33.064 (meters)                     GEOID18
 JV5282  LAPLACE CORR    -         -0.97  (seconds)                    DEFLEC18
 JV5282  HORZ ORDER      -  THIRD
 JV5282
 JV5282.The horizontal coordinates were established by classical geodetic methods
 JV5282.and adjusted by the National Geodetic Survey in January 1992.
 JV5282
 JV5282.The orthometric height was scaled from a topographic map.
 JV5282
 JV5282.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5282.GEOID18 height accuracy estimate available here.
 JV5282
 JV5282.Click photographs - Photos may exist for this station.
 JV5282
 JV5282.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5282
 JV5282. The following values were computed from the NAD 83(1991) position.
 JV5282
 JV5282;                    North         East     Units Scale Factor Converg.
 JV5282;SPC MD       -   169,716.376   448,223.646   MT  0.99996525   +0 21 01.3
 JV5282;SPC MD       -   556,811.14  1,470,547.08   sFT  0.99996525   +0 21 01.3
 JV5282;UTM  18      - 4,339,321.655   375,494.648   MT  0.99979087   -0 54 40.5
 JV5282
 JV5282!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5282!SPC MD       -   1.00000523  x   0.99996525  =   0.99997048
 JV5282!UTM  18      -   1.00000523  x   0.99979087  =   0.99979610
 JV5282
 JV5282:                Primary Azimuth Mark                     Grid Az
 JV5282:SPC MD       -  CRAIGHILL CHAN FRONT RNG LT              098 18 28.6
 JV5282:UTM  18      -  CRAIGHILL CHAN FRONT RNG LT              099 34 10.4
 JV5282
 JV5282_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7549439321(NAD 83)
 JV5282
 JV5282|---------------------------------------------------------------------|
 JV5282| PID    Reference Object                     Distance      Geod. Az  |
 JV5282|                                                           dddmmss.s |
 JV5282| JV5286 BAY SHORE CUPOLA                    APPROX. 2.0 KM 0574232.6 |
 JV5282| JV5253 CRAIGHILL CHAN FRONT RNG LT         APPROX. 4.1 KM 0983929.9 |
 JV5282| JV5263 DISPOSAL PLANT CHIMNEY              APPROX. 7.2 KM 1844629.8 |
 JV5282|---------------------------------------------------------------------|
 JV5282
 JV5282                          SUPERSEDED SURVEY CONTROL
 JV5282
 JV5282  NAD 83(1986)-  39 11 39.24741(N)    076 26 30.35398(W) AD(       ) 3
 JV5282  NAD 27      -  39 11 38.85804(N)    076 26 31.50752(W) AD(       ) 3
 JV5282  USSD        -  39 11 39.21700(N)    076 26 31.33500(W) AD(       ) 3
 JV5282
 JV5282.Superseded values are not recommended for survey control.
 JV5282
 JV5282.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5282.See file dsdata.pdf to determine how the superseded data were derived.
 JV5282
 JV5282_MARKER: DS = TRIANGULATION STATION DISK
 JV5282_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV5282_SP_SET: LIGHTHOUSE FOUNDATION
 JV5282_MARK LOGO: CGS
 JV5282_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV5282
 JV5282  HISTORY     - Date     Condition        Report By
 JV5282  HISTORY     - 1915     MONUMENTED       CGS
 JV5282  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5282  HISTORY     - 1985     MARK NOT FOUND   USPSQD
 JV5282
 JV5282                          STATION DESCRIPTION
 JV5282
 JV5282'DESCRIBED BY COAST AND GEODETIC SURVEY 1915 (EWE)
 JV5282'ON THE STONE FOUNDATION OF OLD NORTH POINT LIGHTHOUSE, ON A
 JV5282'SANDSTONE SLAB ABOUT 2 FEET WIDE AND 6 INCHES THICK.  THE POINT
 JV5282'WAS RE-MARKED IN 1915 USNG A STANDARD BRONZE DISK STATION MARK.
 JV5282
 JV5282                          STATION RECOVERY (1961)
 JV5282
 JV5282'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5282'STATION COULD NOT BE FOUND.  THE LIGHTHOUSE HAS BEEN RAZED AND
 JV5282'NOTHING BUT A PILE OF STONE REMAINS.
 JV5282
 JV5282                          STATION RECOVERY (1985)
 JV5282
 JV5282'RECOVERY NOTE BY US POWER SQUADRON 1985 (WRB)
 JV5282'STATION COULD NOT BE FOUND, AREA FOUND AS DESCRIBED BY G.F.W. IN
 JV5282'1961.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5272 ***********************************************************************
 JV5272  DESIGNATION -  HOWARD 2
 JV5272  PID         -  JV5272
 JV5272  STATE/COUNTY-  MD/BALTIMORE
 JV5272  COUNTRY     -  US
 JV5272  USGS QUAD   -  SPARROWS POINT (2016)
 JV5272
 JV5272                         *CURRENT SURVEY CONTROL
 JV5272  ______________________________________________________________________
 JV5272* NAD 83(1991) POSITION- 39 11 46.70212(N) 076 26 40.86422(W)   ADJUSTED
 JV5272* NAVD 88 ORTHO HEIGHT -     7.949 (meters)       26.08  (feet) ADJUSTED
 JV5272  ______________________________________________________________________
 JV5272  GEOID HEIGHT    -        -33.060 (meters)                     GEOID18
 JV5272  LAPLACE CORR    -         -0.93  (seconds)                    DEFLEC18
 JV5272  DYNAMIC HEIGHT  -          7.945 (meters)       26.07  (feet) COMP
 JV5272  MODELED GRAVITY -    980,106.2   (mgal)                       NAVD 88
 JV5272
 JV5272  HORZ ORDER      -  FIRST
 JV5272  VERT ORDER      -  THIRD
 JV5272
 JV5272.The horizontal coordinates were established by classical geodetic methods
 JV5272.and adjusted by the National Geodetic Survey in January 1992.
 JV5272
 JV5272.The orthometric height was determined by differential leveling and
 JV5272.adjusted by the NATIONAL GEODETIC SURVEY
 JV5272.in February 1998.
 JV5272
 JV5272.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5272.GEOID18 height accuracy estimate available here.
 JV5272
 JV5272.Click photographs - Photos may exist for this station.
 JV5272
 JV5272.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5272
 JV5272.The dynamic height is computed by dividing the NAVD 88
 JV5272.geopotential number by the normal gravity value computed on the
 JV5272.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV5272.degrees latitude (g = 980.6199 gals.).
 JV5272
 JV5272.The modeled gravity was interpolated from observed gravity values.
 JV5272
 JV5272. The following values were computed from the NAD 83(1991) position.
 JV5272
 JV5272;                    North         East     Units Scale Factor Converg.
 JV5272;SPC MD       -   169,944.581   447,969.823   MT  0.99996545   +0 20 54.7
 JV5272;SPC MD       -   557,559.85  1,469,714.33   sFT  0.99996545   +0 20 54.7
 JV5272;UTM  18      - 4,339,555.352   375,245.955   MT  0.99979163   -0 54 47.3
 JV5272
 JV5272!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5272!SPC MD       -   1.00000394  x   0.99996545  =   0.99996939
 JV5272!UTM  18      -   1.00000394  x   0.99979163  =   0.99979557
 JV5272
 JV5272:                Primary Azimuth Mark                     Grid Az
 JV5272:SPC MD       -  HOWARD 2 RM 2 AZIMUTH                    334 22 39.9
 JV5272:UTM  18      -  HOWARD 2 RM 2 AZIMUTH                    335 38 21.9
 JV5272
 JV5272_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7524539555(NAD 83)
 JV5272
 JV5272|---------------------------------------------------------------------|
 JV5272| PID    Reference Object                     Distance      Geod. Az  |
 JV5272|                                                           dddmmss.s |
 JV5272| CA9541 HOWARD 2 RM 1                        26.871 METERS 06944     |
 JV5272| JV5295 CUTOFF                              322.473 METERS 28419     |
 JV5272| CA9540 HOWARD 2 RM 2 AZIMUTH                              3344334.6 |
 JV5272| CA9542 HOWARD 2 RM 3                        22.768 METERS 34122     |
 JV5272| JV5273 FORT HOWARD TANK                    APPROX. 0.7 KM 3424130.0 |
 JV5272|---------------------------------------------------------------------|
 JV5272
 JV5272                          SUPERSEDED SURVEY CONTROL
 JV5272
 JV5272  NAD 83(1986)-  39 11 46.69763(N)    076 26 40.87365(W) AD(       ) 1
 JV5272  NAD 27      -  39 11 46.31129(N)    076 26 42.02473(W) AD(       ) 1
 JV5272  NGVD 29 (07/19/86)    3.0    (m)           10.     (f) VERT ANG       
 JV5272
 JV5272.Superseded values are not recommended for survey control.
 JV5272
 JV5272.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5272.See file dsdata.pdf to determine how the superseded data were derived.
 JV5272
 JV5272_MARKER: DS = TRIANGULATION STATION DISK
 JV5272_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5272_STAMPING: HOWARD 2 1933
 JV5272_MARK LOGO: CGS
 JV5272_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV5272_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5272+STABILITY: SURFACE MOTION
 JV5272_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV5272+SATELLITE: SATELLITE OBSERVATIONS - January 30, 1995
 JV5272
 JV5272  HISTORY     - Date     Condition        Report By
 JV5272  HISTORY     - 1933     MONUMENTED       CGS
 JV5272  HISTORY     - 1934     GOOD             CGS
 JV5272  HISTORY     - 1940     GOOD             CGS
 JV5272  HISTORY     - 1943     GOOD             CGS
 JV5272  HISTORY     - 1961     GOOD             CGS
 JV5272  HISTORY     - 1973     GOOD             NGS
 JV5272  HISTORY     - 1975     GOOD             NGS
 JV5272  HISTORY     - 1980     GOOD             USACE
 JV5272  HISTORY     - 19950130 GOOD             MCCRON
 JV5272  HISTORY     - 20090629 GOOD             MD-005
 JV5272
 JV5272                          STATION DESCRIPTION
 JV5272
 JV5272'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV5272'STATION IS AT FORT HOWARD, NORTH POINT, LOCATED ON THE RAMPART OF
 JV5272'BATTERY NICHOLSON, NOW OUT OF COMMISSION AND DISMANTLED.
 JV5272'
 JV5272'SURFACE MARK IS A STANDARD BRONZE DISK SET IN CONCRETE.
 JV5272'
 JV5272'UNDERGROUND MARK IS A BLOCK OF CONCRETE BELOW THE GROUND
 JV5272'CONTAINING A COPPER BOLT.
 JV5272'
 JV5272'REFERENCE AND AZIMUTH MARKS ARE STANDARD BRONZE DISKS SET IN A
 JV5272'BOULDER.
 JV5272'
 JV5272'REFERENCE MARK NO.3 IS 74.70 FEET NW OF THE STATION SET IN THE
 JV5272'CONCRETE BATTERY RAMPART AT THE NW CORNER BY A GUN O.P.  REFERENCE
 JV5272'MARK NO.1 IS 88.16 FEET N OF THE STATION ON THE W END OF THE E GUN
 JV5272'EMPLACEMENT AT O.P.  REFERENCE MARK NO.2 IS 0.25 MILE N OF THE
 JV5272'STATION SET IN THE CONCRETE BASE OF THE FLAGPOLE WHICH IS AT THE E
 JV5272'CORNER OF THE PARADE GROUND, A 4-FOOT HEDGE RUNS AROUND THE
 JV5272'FLAGPOLE AT A RADIUS OF 35 FEET.  THE MARK IS VISIBLE FROM THE
 JV5272'GROUND AT THE STATION THROUGH AN APERTURE IN THE HEDGE.
 JV5272'
 JV5272'TO REACH FROM BALTIMORE GO NE OUT E FAYETTE STREET AND FOLLOW
 JV5272'ROUTE 40 TO THE PHILADELPHIA ROAD.  PASS UNDER TWO PENNSYLVANIA
 JV5272'RAILROAD BRIDGES 0.2 MILE APART AND UNDER THE BALTIMORE AND OHIO
 JV5272'RAILROAD UNDERPASS WHICH IS 0.3 MILE BEYOND THE SECOND
 JV5272'PENNSYLVANIA RAILROAD BRIDGE, CONTINUE 0.7 MILE TO THE NORTH POINT
 JV5272'ROAD.  TURN RIGHT ON THIS ROAD (ROUTE 20) AND FOLLOW THIS ROAD
 JV5272'10.8 MILES TO FORT HOWARD.  ENTER GATE (TRUCKS TAKE LEFT ROAD BY
 JV5272'THE POST THEATRE) TURN RIGHT AT THE PARADE GROUND. FOLLOW ROAD
 JV5272'AROUND THE PARADE GROUND TO THE BATTERY ROAD AND THE BATTERY
 JV5272'REACHED IS BATTERY NICHOLSON.  STATION IS 35 FEET S OF THE W GUN
 JV5272'EMPLACEMENT ON THE RAMP IN FRONT OF THE BATTERY.
 JV5272'
 JV5272'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV5272
 JV5272                          STATION RECOVERY (1934)
 JV5272
 JV5272'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 JV5272'THE STATION AND REFERENCE MARKS NOS.1 AND 3 WERE RECOVERED IN GOOD
 JV5272'CONDITION.
 JV5272'
 JV5272'NO SEARCH WAS MADE FOR REFERENCE MARK NO.2 WHICH IS THE AZIMUTH MARK.
 JV5272'
 JV5272'THE ORIGINAL DESCRIPTION IS ENTIRELY ADEQUATE.
 JV5272
 JV5272                          STATION RECOVERY (1940)
 JV5272
 JV5272'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (RJS)
 JV5272'STATION FOUND AS DESCRIBED AND ALL MARKS WERE RECOVERED IN GOOD
 JV5272'CONDITION.
 JV5272
 JV5272                          STATION RECOVERY (1943)
 JV5272
 JV5272'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (FLP)
 JV5272'REFERENCE MARK NO. 2 (AZIMUTH MARK) HAS BEEN REMOVED.
 JV5272'
 JV5272'THIS MARK WAS IN THE FOUNDATION OF THE FLAGPOLE AT FORT HOWARD,
 JV5272'BALTIMORE HARBOR.  THE FLAGPOLE HAS BEEN TAKEN DOWN AND THE
 JV5272'FOUNDATION RAZED.  LANDSCAPING OF THE IMMEDIATE AREA IS IN
 JV5272'PROGRESS.  A FIVE STORY BUILDING HAS BEEN ERECTED BETWEEN THE
 JV5272'FORMER LOCATION OF THE AZIMUTH REFERENCE MARK AND THE STATION
 JV5272'MARK.  THESE CIRCUMSTANCES MADE IT IMPRACTICABLE TO ESTABLISH THE
 JV5272'MARK IN A NEW LOCATION.
 JV5272'
 JV5272'SO FAR AS IS KNOWN, THE OTHER MARKS AT THIS STATION HAVE NOT BEEN
 JV5272'DISTURBED.  PLANS FOR CONSTRUCTION AND LANDSCAPING, WHICH WOULD
 JV5272'HAVE DESTROYED THE OTHER MARKS, WERE AT ONE TIME UNDER
 JV5272'CONSTRUCTION, BUT THEY HAVE BEEN INDEFINITELY POSTPONED.
 JV5272'
 JV5272'OFFICE NOTE--REFERENCE MARK DISK STAMPED HOWARD 2, NO. 2, 1933
 JV5272'RECEIVED 2/27/43.
 JV5272
 JV5272                          STATION RECOVERY (1961)
 JV5272
 JV5272'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5272'STATION AND R.M. 1 AND 3 WERE FOUND IN GOOD CONDITION.  THE
 JV5272'STATION WAS STAMPED HOWARD 2 1933 AND THE R.M.S WERE STAMPED
 JV5272'HOWARD 2 NO. 1 1933 AND HOWARD 2 NO. 2 1933.  THE ORIGINAL
 JV5272'DESCRIPTION BY R.D.H. IN 1933 IS COMPLETE AND ADEQUATE.
 JV5272
 JV5272                          STATION RECOVERY (1973)
 JV5272
 JV5272'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV5272'THE STATION MARK, REFERENCE MARKS NUMBER 1 AND 3 WERE RECOVERED AS
 JV5272'DESCRIBED BY R.D.H. IN 1933.  REFERENCE MARK NUMBER 2 WAS SEARCHED
 JV5272'FOR BUT NOT RECOVERED HOWEVER, TRIANGULATION STATION CUTOFF 1973
 JV5272'WAS ESTABLISHED AT THIS TIME AND CAN BE USED FOR AN AZIMUTH MARK.
 JV5272'
 JV5272'ALL OBSERVATIONS WERE TAKEN FROM AN INSTRUMENT TRIPOD.
 JV5272'
 JV5272'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN SOUTH SECTION OF
 JV5272'FORT HOWARD.
 JV5272
 JV5272                          STATION RECOVERY (1975)
 JV5272
 JV5272'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (GWJ)
 JV5272'STATION IS RECOVERED IN GOOD CONDITION.  NO SEARCH WAS MADE FOR
 JV5272'THE REFERENCE MARKS.  THE BATTERIES ARE COMPLETELY OVERGROWN,
 JV5272'HOWEVER THE STATION IS STILL USEFUL AS CLEARING A LINE OF SIGHT IS
 JV5272'NOT TOO DIFFICULT.
 JV5272
 JV5272                          STATION RECOVERY (1980)
 JV5272
 JV5272'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1980 (TC)
 JV5272'RM 3 1933 RECOVERED GOOD.
 JV5272'
 JV5272'HOWARD 2 RECOVERED GOOD.  3 ABOVE GROUND LEVEL OTHER RM NOT
 JV5272'SEARCHED FOR.
 JV5272'
 JV5272'PROPERTY IS NOW OWNED BY BALTIMORE COUNTY PARKS AND CALLED FORT
 JV5272'HOWARD PARK STATION STILL USEFUL AFTER SOME CLEARING OF LIGHT BRUSH.
 JV5272'
 JV5272'DISTANCE AND DIRECTION FROM NEAREST TOWN--LOCATED ON PROPERTY
 JV5272'EAST OF FT HOWARD HOSPITAL GROUNDS.
 JV5272
 JV5272                          STATION RECOVERY (1995)
 JV5272
 JV5272'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (GTU)
 JV5272'RECOVERED AS DESCRIBED.
 JV5272
 JV5272                          STATION RECOVERY (2009)
 JV5272
 JV5272'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 2009 (ATA)
 JV5272'RECOVERED BY THE BALTIMORE COUNTY LAND SURVEY DIVISION IN 2009 (ATA).
 JV5272'REFERENCE MARK 1 AND REFERENCE MARK 3 WERE ALSO RECOVERED WITH HOWARD
 JV5272'2
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5866 ***********************************************************************
 HV5866  DESIGNATION -  HOWARD MSFC 1909
 HV5866  PID         -  HV5866
 HV5866  STATE/COUNTY-  MD/DORCHESTER
 HV5866  COUNTRY     -  US
 HV5866  USGS QUAD   -  CAMBRIDGE (2016)
 HV5866
 HV5866                         *CURRENT SURVEY CONTROL
 HV5866  ______________________________________________________________________
 HV5866* NAD 83(1991) POSITION- 38 35 05.62170(N) 076 07 05.17499(W)   ADJUSTED
 HV5866* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5866  ______________________________________________________________________
 HV5866  GEOID HEIGHT    -        -34.931 (meters)                     GEOID18
 HV5866  LAPLACE CORR    -         -3.56  (seconds)                    DEFLEC18
 HV5866  HORZ ORDER      -  THIRD
 HV5866
 HV5866.The horizontal coordinates were established by classical geodetic methods
 HV5866.and adjusted by the National Geodetic Survey in January 1992.
 HV5866
 HV5866.The orthometric height was scaled from a topographic map.
 HV5866
 HV5866.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5866.GEOID18 height accuracy estimate available here.
 HV5866
 HV5866.Click photographs - Photos may exist for this station.
 HV5866
 HV5866.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5866
 HV5866. The following values were computed from the NAD 83(1991) position.
 HV5866
 HV5866;                    North         East     Units Scale Factor Converg.
 HV5866;SPC MD       -   102,298.062   476,835.768   MT  0.99996267   +0 33 12.6
 HV5866;SPC MD       -   335,622.89  1,564,418.68   sFT  0.99996267   +0 33 12.6
 HV5866;UTM  18      - 4,271,306.222   402,616.851   MT  0.99971678   -0 41 50.6
 HV5866
 HV5866!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5866!SPC MD       -   1.00000536  x   0.99996267  =   0.99996803
 HV5866!UTM  18      -   1.00000536  x   0.99971678  =   0.99972214
 HV5866
 HV5866:                Primary Azimuth Mark                     Grid Az
 HV5866:SPC MD       -  HOWELLS                                  011 00 30.9
 HV5866:UTM  18      -  HOWELLS                                  012 15 34.1
 HV5866
 HV5866_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0261671306(NAD 83)
 HV5866
 HV5866|---------------------------------------------------------------------|
 HV5866| PID    Reference Object                     Distance      Geod. Az  |
 HV5866|                                                           dddmmss.s |
 HV5866| HV5862 HOWELLS                             APPROX. 2.9 KM 0113343.5 |
 HV5866|---------------------------------------------------------------------|
 HV5866
 HV5866                          SUPERSEDED SURVEY CONTROL
 HV5866
 HV5866  NAD 83(1986)-  38 35 05.61893(N)    076 07 05.19176(W) AD(       ) 3
 HV5866  NAD 27      -  38 35 05.18200(N)    076 07 06.42000(W) AD(       ) 3
 HV5866  USSD        -  38 35 05.57600(N)    076 07 06.22300(W) AD(       ) 3
 HV5866
 HV5866.Superseded values are not recommended for survey control.
 HV5866
 HV5866.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5866.See file dsdata.pdf to determine how the superseded data were derived.
 HV5866
 HV5866_MARKER: Z = SEE DESCRIPTION
 HV5866_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5866_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5866+STABILITY: SURFACE MOTION
 HV5866
 HV5866  HISTORY     - Date     Condition        Report By
 HV5866  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5866  HISTORY     - 1930     MARK NOT FOUND   MDDNR
 HV5866  HISTORY     - 1939     MARK NOT FOUND   CGS
 HV5866
 HV5866                          STATION DESCRIPTION
 HV5866
 HV5866'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5866'ON THE SOUTHERN SHORE OF CHOPTANK RIVER, 2 MILES SE OF HORN POINT
 HV5866'AND ABOUT 1/4 MILE NW OF ENTRANCE TO JENKINS CREEK, ON CULTIVATED
 HV5866'LAND, ON A BLUFF ABOUT 12 FEET ABOVE HIGH WATER, 25 YARDS SW OF
 HV5866'EDGE OF BLUFF, 30 YARDS S OF EDGE OF BLUFF, 35 YARDS W OF EDGE OF
 HV5866'BLUFF, 45 YARDS WNW OF CORNER OF FENCE DIVIDING FIELD FROM MARSH,
 HV5866'AND 65 YARDS NE OF THE S ONE OF TWO SMALL POPLAR TREES IN FIELD.
 HV5866'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV5866'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV5866'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV5866'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE
 HV5866'MARK IS THE CENTER OF 2-INCH TILE PIPE BURIED WITH THE TOP 2
 HV5866'INCHES BELOW THE BASE OF THE MONUMENT.  DISTANCES AND BEARINGS TO
 HV5866'VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NEAR PEAK OF BARN, 1/4
 HV5866'MILE, S 28 DEG 49 MIN W.  RIGHT PEAK OF HOUSE, 1/4 MILE, N 79 DEG
 HV5866'12 MIN W. RIGHT PEAK OF OLD HOUSE, 1-1/2 MILES, N 45 DEG 12 MIN W.
 HV5866'NEAR PEAK OF BARN, 3-1/2 MILES, N 5 DEG 54 MIN W. RED BEACON,
 HV5866'2-7/8 MILES, N 2 DEG 2 MIN W.  NEAR PEAK OF LOW HOUSE IN TREES,
 HV5866'3-1/4 MILES, N 43 DEG 38 MIN E.  NEAR PEAK OF KIRBY WHARF HOUSE, 3
 HV5866'MILES, N 54 DEG 39 MIN E.  LEFT CHIMNEY OF HOUSE, 1 MILE, N 78
 HV5866'DEG 46 MIN E.  NAIL IN BLAZE IN 8-INCH LOCUST TREE, 37.49 METERS
 HV5866'(123.0 FEET), N 89 DEG 38 MIN E.  NAIL IN BLAZE IN LOCUST TREE,
 HV5866'45.66 METERS (149.8 FEET), S 71 DEG 39 MIN E. NAIL IN BLAZE IN
 HV5866'LOCUST TREE, 63.83 METERS (209.4 FEET), S 27 DEG 51 MIN E.
 HV5866
 HV5866                          STATION RECOVERY (1930)
 HV5866
 HV5866'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV5866'COUNTRY CLUB NOW OCCUPIES SITE AND STONE IS MISSING.
 HV5866
 HV5866                          STATION RECOVERY (1939)
 HV5866
 HV5866'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV5866'STATION SEARCHED FOR BUT NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6808 ***********************************************************************
 HV6808  DESIGNATION -  HOWARDS MSFC 1908
 HV6808  PID         -  HV6808
 HV6808  STATE/COUNTY-  MD/ST MARYS
 HV6808  COUNTRY     -  US
 HV6808  USGS QUAD   -  LEONARDTOWN (2016)
 HV6808
 HV6808                         *CURRENT SURVEY CONTROL
 HV6808  ______________________________________________________________________
 HV6808* NAD 83(1993) POSITION- 38 16 13.88400(N) 076 42 25.06781(W)   ADJUSTED
 HV6808* NAVD 88 ORTHO HEIGHT -     5.    (meters)       16.    (feet) SCALED
 HV6808  ______________________________________________________________________
 HV6808  GEOID HEIGHT    -        -33.774 (meters)                     GEOID18
 HV6808  LAPLACE CORR    -         -2.28  (seconds)                    DEFLEC18
 HV6808  HORZ ORDER      -  THIRD
 HV6808
 HV6808.The horizontal coordinates were established by classical geodetic methods
 HV6808.and adjusted by the National Geodetic Survey in November 1994.
 HV6808
 HV6808.The orthometric height was scaled from a topographic map.
 HV6808
 HV6808.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6808.GEOID18 height accuracy estimate available here.
 HV6808
 HV6808.Click photographs - Photos may exist for this station.
 HV6808
 HV6808.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6808
 HV6808. The following values were computed from the NAD 83(1993) position.
 HV6808
 HV6808;                    North         East     Units Scale Factor Converg.
 HV6808;SPC MD       -    67,072.039   425,643.391   MT  1.00000526   +0 11 02.1
 HV6808;SPC MD       -   220,052.18  1,396,465.03   sFT  1.00000526   +0 11 02.1
 HV6808;SPC VA N     - 2,068,558.921 3,656,891.329   MT  0.99996661   +1 07 08.6
 HV6808;SPC VA N     - 6,786,597.06 11,997,650.97   sFT  0.99996661   +1 07 08.6
 HV6808;UTM  18      - 4,237,208.730   350,680.197   MT  0.99987460   -1 03 26.8
 HV6808
 HV6808!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6808!SPC MD       -   1.00000455  x   1.00000526  =   1.00000981
 HV6808!SPC VA N     -   1.00000455  x   0.99996661  =   0.99997116
 HV6808!UTM  18      -   1.00000455  x   0.99987460  =   0.99987915
 HV6808
 HV6808:                Primary Azimuth Mark                     Grid Az
 HV6808:SPC MD       -  MANSION                                  147 42 13.2
 HV6808:SPC VA N     -  MANSION                                  146 46 06.7
 HV6808:UTM  18      -  MANSION                                  148 56 42.1
 HV6808
 HV6808_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5068037208(NAD 83)
 HV6808
 HV6808|---------------------------------------------------------------------|
 HV6808| PID    Reference Object                     Distance      Geod. Az  |
 HV6808|                                                           dddmmss.s |
 HV6808| HV6807 MANSION                             APPROX. 0.7 KM 1475315.3 |
 HV6808| HV6814 BANK                                438.676 METERS 3424057.6 |
 HV6808|---------------------------------------------------------------------|
 HV6808
 HV6808                          SUPERSEDED SURVEY CONTROL
 HV6808
 HV6808  NAD 83(1991)-  38 16 13.88278(N)    076 42 25.07290(W) AD(       ) 3
 HV6808  NAD 83(1986)-  38 16 13.88366(N)    076 42 25.08432(W) AD(       ) 3
 HV6808  NAD 27      -  38 16 13.43900(N)    076 42 26.17200(W) AD(       ) 3
 HV6808  USSD        -  38 16 14.03000(N)    076 42 26.13100(W) AD(       ) 3
 HV6808
 HV6808.Superseded values are not recommended for survey control.
 HV6808
 HV6808.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6808.See file dsdata.pdf to determine how the superseded data were derived.
 HV6808
 HV6808_MARKER: H = DRILL HOLE
 HV6808_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6808_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6808+STABILITY: SURFACE MOTION
 HV6808
 HV6808  HISTORY     - Date     Condition        Report By
 HV6808  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6808  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6808
 HV6808                          STATION DESCRIPTION
 HV6808
 HV6808'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6808'STATION IS ON THE NORTHEASTERN SHORE OF ST. CLEMENT BAY, ABOUT 2
 HV6808'MILES NNE OF LONG POINT, 1/2 MILE NE OF SHIPPING POINT, AND 1/8
 HV6808'MILE E OF HOWARDS WHARF, IN A FIELD, ABOUT 20 FEET ABOVE HIGH
 HV6808'WATER, 8 YARDS N OF EDGE OF BANK, 16 YARDS WNW OF EDGE OF RAVINE,
 HV6808'18 YARDS NW OF EXTREME END OF POINT OF BANK, 70 YARDS W OF ANOTHER
 HV6808'RAVINE, 100 YARDS WNW OF A WIRE FENCE, AND 250 YARDS S OF A HOUSE.
 HV6808'
 HV6808'STATION MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV6808'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV6808'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV6808'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV6808'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--LEFT
 HV6808'CHIMNEY OF YATES HOUSE, 2-1/4 MILES, S 16 DEG 59 MIN W.  CHIMNEY
 HV6808'OUTSIDE OF HOUSE, 1-1/8 MILES, S 39 DEG 3 MIN W.  NAIL IN BLAZE IN
 HV6808'6-INCH CEDAR TREE, 8.62 METERS (28.28 FEET), S 55 DEG 21 MIN W.
 HV6808'NAIL IN BLAZE IN 7-INCH CHERRY TREE, 23.75 METERS (77.9 FEET), S
 HV6808'85 DEG 52 MIN W.  CUPOLA ON MAYCROFTS BARN, 1 MILE, N 54 DEG 44
 HV6808'MIN W.  FLAGSTAFF AT MAYCROFT, 1 MILE, N 52 DEG 1 MIN W. 36-INCH
 HV6808'OAK TREE, 200 YARDS, N 28 DEG 56 MIN W.  CHIMNEY OF HOUSE, 250
 HV6808'YARDS, N 23 DEG 33 MIN W.  LEFT PEAK OF ROOF OF BARN, 250 YARDS,
 HV6808'N 43 DEG 57 MIN E.  NEAR PEAK OF ROOF OF HOUSE, 1/4 MILE, N 62 DEG
 HV6808'5 MIN E.  CHIMNEY OF HOUSE IN WOODS, 3/8 MILE, S 75 DEG 13 MIN E.
 HV6808'NAIL IN BLAZE IN 3-INCH CEDAR TREE, 12.15 METERS (39.9 FEET), S 20
 HV6808'DEG 5 MIN E.
 HV6808
 HV6808                          STATION RECOVERY (1958)
 HV6808
 HV6808'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6808'THE STATION WAS SEARCHED FOR BY THREE MEN FOR ONE HOUR WITHOUT
 HV6808'RESULTS.  NONE OF THE VARIOUS TREE REFERENCES NOW EXIST AND THERE
 HV6808'IS EVIDENCE THAT THE POINT HAS ERODED CONSIDERABLY.  IT IS
 HV6808'BELIEVED THAT THE STATION HAS BEEN UNDERMINED BY THE RAPIDLY
 HV6808'CAVING BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0713 ***********************************************************************
 HV0713  DESIGNATION -  HOWE
 HV0713  PID         -  HV0713
 HV0713  STATE/COUNTY-  MD/CALVERT
 HV0713  COUNTRY     -  US
 HV0713  USGS QUAD   -  BROOMES ISLAND (2016)
 HV0713
 HV0713                         *CURRENT SURVEY CONTROL
 HV0713  ______________________________________________________________________
 HV0713* NAD 83(1993) POSITION- 38 29 12.41661(N) 076 30 44.29327(W)   ADJUSTED
 HV0713* NAVD 88 ORTHO HEIGHT -    47.351 (meters)      155.35  (feet) ADJUSTED
 HV0713  ______________________________________________________________________
 HV0713  GEOID HEIGHT    -        -34.118 (meters)                     GEOID18
 HV0713  LAPLACE CORR    -         -4.91  (seconds)                    DEFLEC18
 HV0713  DYNAMIC HEIGHT  -         47.322 (meters)      155.26  (feet) COMP
 HV0713  MODELED GRAVITY -    980,017.0   (mgal)                       NAVD 88
 HV0713
 HV0713  HORZ ORDER      -  FIRST
 HV0713  VERT ORDER      -  FIRST     CLASS II
 HV0713
 HV0713.The horizontal coordinates were established by classical geodetic methods
 HV0713.and adjusted by the National Geodetic Survey in November 1994.
 HV0713
 HV0713.The orthometric height was determined by differential leveling and
 HV0713.adjusted by the NATIONAL GEODETIC SURVEY
 HV0713.in June 1991.
 HV0713
 HV0713.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0713.GEOID18 height accuracy estimate available here.
 HV0713
 HV0713.Click photographs - Photos may exist for this station.
 HV0713
 HV0713.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0713
 HV0713.The dynamic height is computed by dividing the NAVD 88
 HV0713.geopotential number by the normal gravity value computed on the
 HV0713.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0713.degrees latitude (g = 980.6199 gals.).
 HV0713
 HV0713.The modeled gravity was interpolated from observed gravity values.
 HV0713
 HV0713. The following values were computed from the NAD 83(1993) position.
 HV0713
 HV0713;                    North         East     Units Scale Factor Converg.
 HV0713;SPC MD       -    91,149.792   442,549.510   MT  0.99997276   +0 18 21.9
 HV0713;SPC MD       -   299,047.28  1,451,931.18   sFT  0.99997276   +0 18 21.9
 HV0713;UTM  18      - 4,260,910.216   368,102.751   MT  0.99981424   -0 56 28.7
 HV0713
 HV0713!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0713!SPC MD       -   0.99999792  x   0.99997276  =   0.99997068
 HV0713!UTM  18      -   0.99999792  x   0.99981424  =   0.99981216
 HV0713
 HV0713:                Primary Azimuth Mark                     Grid Az
 HV0713:SPC MD       -  REKAR                                    146 36 07.3
 HV0713:UTM  18      -  REKAR                                    147 50 57.9
 HV0713
 HV0713_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6810260910(NAD 83)
 HV0713
 HV0713|---------------------------------------------------------------------|
 HV0713| PID    Reference Object                     Distance      Geod. Az  |
 HV0713|                                                           dddmmss.s |
 HV0713| HV0712 HOWE RM 1                            36.991 METERS 09701     |
 HV0713| HV6744 REKAR                               APPROX.10.8 KM 1465429.2 |
 HV0713| HV0714 HOWE RM 3                            27.660 METERS 16701     |
 HV0713| CX2908 HOWE RM 2                            33.893 METERS 18235     |
 HV0713| CX2907 HOWE AZ MK                                         3511949.2 |
 HV0713|---------------------------------------------------------------------|
 HV0713
 HV0713                          SUPERSEDED SURVEY CONTROL
 HV0713
 HV0713  NAD 83(1991)-  38 29 12.41689(N)    076 30 44.29377(W) AD(       ) 1
 HV0713  NAD 83(1986)-  38 29 12.41592(N)    076 30 44.30804(W) AD(       ) 1
 HV0713  NAD 27      -  38 29 11.97300(N)    076 30 45.47600(W) AD(       ) 1
 HV0713  NGVD 29              47.60   (m)          156.2    (f) LEVELING    3  
 HV0713  NGVD 29 (11/26/84)   47.595  (m)          156.15   (f) ADJUSTED    1 2
 HV0713
 HV0713.Superseded values are not recommended for survey control.
 HV0713
 HV0713.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0713.See file dsdata.pdf to determine how the superseded data were derived.
 HV0713
 HV0713_MARKER: DS = TRIANGULATION STATION DISK
 HV0713_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0713_STAMPING: HOWE 1942
 HV0713_MARK LOGO: CGS
 HV0713_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0713+STABILITY: SURFACE MOTION
 HV0713
 HV0713  HISTORY     - Date     Condition        Report By
 HV0713  HISTORY     - 1942     MONUMENTED       CGS
 HV0713  HISTORY     - 1943     GOOD             CGS
 HV0713  HISTORY     - 1960     GOOD             CGS
 HV0713  HISTORY     - 1969     GOOD             MDDT
 HV0713  HISTORY     - 1969     GOOD             CGS
 HV0713  HISTORY     - 1971     GOOD             NGS
 HV0713  HISTORY     - 1971     GOOD             NGS
 HV0713
 HV0713                          STATION DESCRIPTION
 HV0713
 HV0713'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV0713'STATION IS 5.7 MILES S OF PRINCE FREDERICK AND 1.0 MILE N OF THE
 HV0713'SMALL VILLAGE OF ST. LEONARD ON PROPERTY OWNED AND OCCUPIED BY
 HV0713'WILLIAM H. HOWE.  IT IS ABOUT 1/10 MILE W OF STATE HIGHWAY 2, 75
 HV0713'FEET NE OF THE NE CORNER OF HOWES HOUSE, STAMPED HOWE 1942, AND
 HV0713'PROJECTS 4 INCHES.
 HV0713'
 HV0713'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD DISKS.
 HV0713'
 HV0713'REFERENCE MARK NO. 1 IS E OF THE STATION, 15 FEET N OF THE CENTER
 HV0713'OF DRIVEWAY, 10 FEET W OF A LIGHT POLE, STAMPED HOWE NO. 1 1942,
 HV0713'AND PROJECTS 6 INCHES.
 HV0713'
 HV0713'REFERENCE MARK NO. 2 IS S OF THE STATION, 12 FEET NE OF THE NE
 HV0713'CORNER OF THE GARAGE, 3 FEET WNW OF A 3-INCH LOCUST TREE, STAMPED
 HV0713'HOWE NO. 2 1942, AND PROJECTS 6 INCHES.
 HV0713'
 HV0713'THE AZIMUTH MARK IS 0.25 MILE N OF THE STATION ON THE N BANK OF
 HV0713'THE ROAD CUT, 30 FEET E OF CENTER OF STATE HIGHWAY 2, 12 FEET S OF
 HV0713'A 12-INCH PINE TREE, AND 8 FEET W OF A WIRE FENCE.  IT IS STAMPED
 HV0713'HOWE 1942 AND PROJECTS 4 INCHES.  TO REACH FROM STATION GO BACK TO
 HV0713'STATE HIGHWAY 2, TURN LEFT (N) AND GO 0.25 MILE TO MARK ON RIGHT.
 HV0713'
 HV0713'TO REACH THE STATION FROM PRINCE FREDERICK GO S ON STATE HIGHWAY 2
 HV0713'FOR 5.7 MILES TO DIRT FARM ROAD RIGHT, TURN RIGHT AND GO 0.1 MILE
 HV0713'TO STATION.
 HV0713'
 HV0713'A 37-FOOT TOWER AT STATION HOWE WILL SEE A 113-FOOT LIGHT AT
 HV0713'STATION REKAR.
 HV0713'
 HV0713'A 37-FOOT TOWER AT STATION HOWE WILL SEE A 113-FOOT LIGHT AT
 HV0713'STATION MARSHALL.
 HV0713'
 HV0713'A 37-FOOT TOWER AT STATION HOWE WILL SEE AN 87-FOOT LIGHT AT
 HV0713'STATION GOVERNOR.
 HV0713'
 HV0713'A 103-FOOT TOWER AT STATION HOWE WILL SEE AN 87-FOOT LIGHT AT
 HV0713'STATION WILSON 2.
 HV0713'
 HV0713'HEIGHT OF LIGHT ABOVE STATION MARK- 34 METERS.
 HV0713
 HV0713                          STATION RECOVERY (1943)
 HV0713
 HV0713'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV0713'THE STATION AND ALL MARKS RECOVERED AS DESCRIBED AND IN GOOD
 HV0713'CONDITION, DESCRIPTION SATISFACTORY.
 HV0713'
 HV0713'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT SMITH.
 HV0713'
 HV0713'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT TURNER.
 HV0713
 HV0713                          STATION RECOVERY (1960)
 HV0713
 HV0713'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV0713'STATION REFERENCE MARK 2 AND AZIMUTH MARK FOUND IN GOOD CONDITION.
 HV0713'REFERENCE MARK 1 COULD NOT BE FOUND.  THE FIELD IS PLOWED IN THE
 HV0713'VICINITY OF RM 1.  PREVIOUS DESCRIPTION BY G.W.L. IS COMPLETE AND
 HV0713'ADEQUATE WITH THE FOLLOWING EXCEPTIONS.  AZIMUTH MARK IS NOW 41.5
 HV0713'FT. E. OF CENTERLINE OF STATE HIGHWAY 2 INSTEAD OF 30 FT.
 HV0713
 HV0713                          STATION RECOVERY (1969)
 HV0713
 HV0713'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1969
 HV0713'STATION FOUND IN GOOD CONDITION.  R.M. 2 WAS KNOCKED LOOSE AND
 HV0713'DISK REMOVED.  AZIMUTH MARK WAS REMOVED BY GRADING OPERATIONS.
 HV0713
 HV0713                          STATION RECOVERY (1969)
 HV0713
 HV0713'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (ERK)
 HV0713'STATION MARK AND REFERENCE MARK NO 1 WERE RECOVERED IN GOOD CONDITION.
 HV0713'
 HV0713'REFERENCE MARK NO 2 AND THE AZIMUTH MARK WERE FOUND DESTROYED.
 HV0713'REFERENCE MARK NO 3 WAS ESTABLISHED.  A SUITABLE LOCATION WAS NOT
 HV0713'FOUND FOR A NEW AZIMUTH MARK.  THE PROPERTY IS OWNED BY THE
 HV0713'WILLIUM H.HOWE ESTATES.
 HV0713'
 HV0713'A NEW AND COMPLETE DESCRIPTIONS FOLLOWS--
 HV0713'
 HV0713'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 2 AND 4,
 HV0713'0.5 MILE NORTHWEST OF PRINCE FREDERICK, GO SOUTH ON STATE HIGHWAY
 HV0713'2 AND 4 FOR 5.6 MILES TO A FARM DRIVEWAY ON THE RIGHT, TURN RIGHT
 HV0713'WEST ON THE DRIVEWAY FOR .05 MILE TO THE STATION ON RIGHT AT
 HV0713'NORTHEAST CORNER OF THE FARM HOUSE YARD.
 HV0713'
 HV0713'THE STATION MARK IS A STANDARD DISK STAMPED HOWE 1942, SET IN THE
 HV0713'TOP OF A SQUARE CONCRETE POST AND IS FLUSH WITH THE GROUND
 HV0713'SURFACE. IT IS 81, FEET NORTH OF THE CENTERLINE OF DRIVEWAY, 73.6
 HV0713'FEET EAST-NORTHEAST OF NORTHEAST CORNER OF HOUSE AND 15.0 FEET
 HV0713'NORTH OF A DOUBLE TRUNKED LOCUST TREE.
 HV0713'
 HV0713'REFERENCE MARK NO 1 IS A STANDARD DISK STAMPED HOWE NO 1 1942, SET
 HV0713'SURFACE.  IT IS 20.3 FEET NORTHEAST OF A TELEPHONE POLE AND 18.0
 HV0713'FEET NORTH OF CENTER LINE OF DRIVEWAY.
 HV0713'
 HV0713'REFERENCE MARK NO 3 IS A STANDARD DISK STAMPED HOWE 1942 NO 3 1969
 HV0713'SET IN THE TOP OF A 12-INCH CONCRETE POST THAT IS FLUSH WITH THE
 HV0713'GROUND SURFACE.  IT IS 72.0 FEET SOUTHEAST OF THE SOUTHEAST
 HV0713'CORNER OF HOUSE, 11.0 FEET EAST OF A POWER POLE AND 11.0 FEET
 HV0713'SOUTH OF CENTERLINE OF DRIVEWAY.
 HV0713'
 HV0713'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--5.6 MILES SOUTH
 HV0713'OF PRINCE FREDERICK.
 HV0713
 HV0713                          STATION RECOVERY (1971)
 HV0713
 HV0713'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (RRG)
 HV0713'THE STATION, REFERENCE MARKS 1 AND 3 WERE RECOVERED IN GOOD
 HV0713'CONDITION.  REFERENCE MARK 2 WAS DESTROYED AND THE AZ MARK WAS NOT
 HV0713'RECOVERED ON THIS DATE.  THERE HAS BEEN GRADING AT THE DESCRIBED
 HV0713'LOCATION FOR THE AZ MARK.
 HV0713'
 HV0713'ABOUT 0.9 MILE NORTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE POST
 HV0713'OFFICE AT ST LEONARD, ABOUT 280 FEET WEST OF THE HIGHWAY, NEAR THE
 HV0713'NORTHEAST CORNER OF THE LAWN OF THE HOWE ESTATE, 75 FEET
 HV0713'NORTHEAST OF THE NORTHEAST CORNER OF A TWO STORIED HOUSE, 80 FEET
 HV0713'NORTH OF THE CENTER LINE OF A DRIVEWAY, 15 FEET NORTHEAST OF A
 HV0713'24-INCH LOCUST TREE, 121.4 FEET NORTHWEST OF RM 1 DESCRIBED, 90.8
 HV0713'FEET NORTH AND ACROSS THE DRIVEWAY FROM RM 3 DESCRIBED, ABOUT
 HV0713'LEVEL WITH THE HIGHWAY AND SET IN THE TOP OF A CONCRETE POST
 HV0713'PROJECTING 1 INCH.
 HV0713'
 HV0713'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--0.9 MILE NW OF
 HV0713'ST. LEONARD.
 HV0713
 HV0713                          STATION RECOVERY (1971)
 HV0713
 HV0713'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971
 HV0713'0.9 MI NW FROM ST LEONARD.
 HV0713'ABOUT 0.9 MILE NORTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0713'POST OFFICE AT ST LEONARD, NEAR THE NORTHEAST CORNER OF THE LAWN
 HV0713'FOR MR. HOWE ESTATE, 75 FEET NORTHEAST OF THE NORTHEAST CORNER OF
 HV0713'A 2 STORY HOUSE, 80 FEET NORTH OF THE CENTER LINE OF A DRIVEWAY,
 HV0713'15 FEET NORTHEAST OF A 24-INCH LOCUST TREE, 121.4 FEET NORTHWEST
 HV0713'OF RM 1 DESCRIBED, ABOUT LEVEL WITH THE HIGHWAY AND SET IN THE
 HV0713'TOP OF A CONCRETE POST PROJECTING ONE INCH ABOVE THE LEVEL OF THE
 HV0713'GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0712 ***********************************************************************
 HV0712  DESIGNATION -  HOWE RM 1
 HV0712  PID         -  HV0712
 HV0712  STATE/COUNTY-  MD/CALVERT
 HV0712  COUNTRY     -  US
 HV0712  USGS QUAD   -  BROOMES ISLAND (2016)
 HV0712
 HV0712                         *CURRENT SURVEY CONTROL
 HV0712  ______________________________________________________________________
 HV0712* NAD 83(1986) POSITION- 38 29 12.27   (N) 076 30 42.78   (W)   HD_HELD1
 HV0712* NAVD 88 ORTHO HEIGHT -    45.507 (meters)      149.30  (feet) ADJUSTED
 HV0712  ______________________________________________________________________
 HV0712  GEOID HEIGHT    -        -34.119 (meters)                     GEOID18
 HV0712  DYNAMIC HEIGHT  -         45.479 (meters)      149.21  (feet) COMP
 HV0712  MODELED GRAVITY -    980,017.0   (mgal)                       NAVD 88
 HV0712
 HV0712  VERT ORDER      -  FIRST     CLASS II
 HV0712
 HV0712.The horizontal coordinates were determined by differentially corrected
 HV0712.hand held GPS observations or other comparable positioning techniques
 HV0712.and have an estimated accuracy of +/- 3 meters.
 HV0712
 HV0712.The orthometric height was determined by differential leveling and
 HV0712.adjusted by the NATIONAL GEODETIC SURVEY
 HV0712.in June 1991.
 HV0712
 HV0712.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0712.GEOID18 height accuracy estimate available here.
 HV0712
 HV0712.Click photographs - Photos may exist for this station.
 HV0712
 HV0712.The dynamic height is computed by dividing the NAVD 88
 HV0712.geopotential number by the normal gravity value computed on the
 HV0712.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0712.degrees latitude (g = 980.6199 gals.).
 HV0712
 HV0712.The modeled gravity was interpolated from observed gravity values.
 HV0712
 HV0712;                    North         East    Units  Estimated Accuracy
 HV0712;SPC MD       -    91,145.5     442,586.2     MT  (+/- 3 meters HH1 GPS) 
 HV0712
 HV0712_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6813960905(NAD 83)
 HV0712
 HV0712                          SUPERSEDED SURVEY CONTROL
 HV0712
 HV0712  NGVD 29 (11/26/84)   45.751  (m)          150.10   (f) ADJUSTED    1 2
 HV0712
 HV0712.Superseded values are not recommended for survey control.
 HV0712
 HV0712.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0712.See file dsdata.pdf to determine how the superseded data were derived.
 HV0712
 HV0712_MARKER: DR = REFERENCE MARK DISK
 HV0712_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0712_STAMPING: HOWE NO 1 1942
 HV0712_MARK LOGO: CGS
 HV0712_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0712+STABILITY: SURFACE MOTION
 HV0712
 HV0712  HISTORY     - Date     Condition        Report By
 HV0712  HISTORY     - 1942     MONUMENTED       CGS
 HV0712  HISTORY     - 1971     GOOD             NGS
 HV0712
 HV0712                          STATION DESCRIPTION
 HV0712
 HV0712'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0712'0.9 MI NW FROM ST LEONARD.
 HV0712'ABOUT 0.9 MILE NORTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE POST
 HV0712'OFFICE AT ST LEONARD, ON THE ESTATE OF MR. WILLIAM N. HOWE,
 HV0712'203.7 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 17.5 FEET NORTH
 HV0712'OF THE CENTER LINE OF A DRIVEWAY TO HOUSE, 124 FEET NORTHEAST OF
 HV0712'RM 3 DESCRIBED, 121.4 FEET SOUTHEAST OF THE STATION MARK DESCRIBED,
 HV0712'20 FEET EAST OF A POWER LINE POLE, 0.9 FOOT WEST OF A METAL
 HV0712'WITNESS POST, 4 FEET ABOVE THE LEVEL OF THE DRIVEWAY AND SET IN
 HV0712'THE TOP OF A CONCRETE POST 1 INCH BELOW THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0714 ***********************************************************************
 HV0714  DESIGNATION -  HOWE RM 3
 HV0714  PID         -  HV0714
 HV0714  STATE/COUNTY-  MD/CALVERT
 HV0714  COUNTRY     -  US
 HV0714  USGS QUAD   -  BROOMES ISLAND (2016)
 HV0714
 HV0714                         *CURRENT SURVEY CONTROL
 HV0714  ______________________________________________________________________
 HV0714* NAD 83(1986) POSITION- 38 29 11.54   (N) 076 30 44.04   (W)   HD_HELD1
 HV0714* NAVD 88 ORTHO HEIGHT -    46.366 (meters)      152.12  (feet) ADJUSTED
 HV0714  ______________________________________________________________________
 HV0714  GEOID HEIGHT    -        -34.119 (meters)                     GEOID18
 HV0714  DYNAMIC HEIGHT  -         46.338 (meters)      152.03  (feet) COMP
 HV0714  MODELED GRAVITY -    980,017.0   (mgal)                       NAVD 88
 HV0714
 HV0714  VERT ORDER      -  FIRST     CLASS II
 HV0714
 HV0714.The horizontal coordinates were determined by differentially corrected
 HV0714.hand held GPS observations or other comparable positioning techniques
 HV0714.and have an estimated accuracy of +/- 3 meters.
 HV0714
 HV0714.The orthometric height was determined by differential leveling and
 HV0714.adjusted by the NATIONAL GEODETIC SURVEY
 HV0714.in June 1991.
 HV0714
 HV0714.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0714.GEOID18 height accuracy estimate available here.
 HV0714
 HV0714.Click photographs - Photos may exist for this station.
 HV0714
 HV0714.The dynamic height is computed by dividing the NAVD 88
 HV0714.geopotential number by the normal gravity value computed on the
 HV0714.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0714.degrees latitude (g = 980.6199 gals.).
 HV0714
 HV0714.The modeled gravity was interpolated from observed gravity values.
 HV0714
 HV0714;                    North         East    Units  Estimated Accuracy
 HV0714;SPC MD       -    91,122.8     442,555.8     MT  (+/- 3 meters HH1 GPS) 
 HV0714
 HV0714_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6810860883(NAD 83)
 HV0714
 HV0714                          SUPERSEDED SURVEY CONTROL
 HV0714
 HV0714  NGVD 29 (11/26/84)   46.610  (m)          152.92   (f) ADJUSTED    1 2
 HV0714
 HV0714.Superseded values are not recommended for survey control.
 HV0714
 HV0714.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0714.See file dsdata.pdf to determine how the superseded data were derived.
 HV0714
 HV0714_MARKER: DR = REFERENCE MARK DISK
 HV0714_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0714_STAMPING: HOWE NO 3 1942 1969
 HV0714_MARK LOGO: CGS
 HV0714_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0714+STABILITY: SURFACE MOTION
 HV0714
 HV0714  HISTORY     - Date     Condition        Report By
 HV0714  HISTORY     - 1969     MONUMENTED       CGS
 HV0714  HISTORY     - 1971     GOOD             NGS
 HV0714
 HV0714                          STATION DESCRIPTION
 HV0714
 HV0714'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0714'0.9 MI NW FROM ST LEONARD.
 HV0714'ABOUT 0.9 MILE NORTHWEST ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0714'POST OFFICE AT ST LEONARD, 327 FEET WEST OF THE CENTER LINE OF
 HV0714'THE HIGHWAYS, 72.7 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A
 HV0714'2 STORY HOUSE, 43.5 FEET NORTHEAST OF THE NORTHEAST CORNER OF A
 HV0714'GARAGE, 90.8 FEET SOUTH OF AND ACROSS THE DRIVEWAY FROM THE
 HV0714'STATION MARK, 10 FEET SOUTH OF THE CENTER LINE OF A DRIVEWAY,
 HV0714'10 1/2 FEET NORTHWEST OF A POWER LINE POLE WITH A LIGHT, 2 FEET
 HV0714'ABOVE THE LEVEL OF THE DRIVEWAY AND SET IN THE TOP OF A CONCRETE
 HV0714'POST PROJECTING 1 INCH ABOVE THE LEVEL OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8019 ***********************************************************************
 AJ8019  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8019  DESIGNATION -  HOWELL
 AJ8019  PID         -  AJ8019
 AJ8019  STATE/COUNTY-  MD/TALBOT
 AJ8019  COUNTRY     -  US
 AJ8019  USGS QUAD   -  TRAPPE (2016)
 AJ8019
 AJ8019                         *CURRENT SURVEY CONTROL
 AJ8019  ______________________________________________________________________
 AJ8019* NAD 83(2011) POSITION- 38 38 43.80553(N) 076 03 30.02880(W)   ADJUSTED
 AJ8019* NAD 83(2011) ELLIP HT-   -19.813 (meters)        (06/27/12)   ADJUSTED
 AJ8019* NAD 83(2011) EPOCH   -  2010.00
 AJ8019* NAVD 88 ORTHO HEIGHT -    15.112 (meters)       49.58  (feet) ADJUSTED
 AJ8019  ______________________________________________________________________
 AJ8019  GEOID HEIGHT    -        -34.927 (meters)                     GEOID18
 AJ8019  NAD 83(2011) X  -  1,201,773.572 (meters)                     COMP
 AJ8019  NAD 83(2011) Y  - -4,841,044.927 (meters)                     COMP
 AJ8019  NAD 83(2011) Z  -  3,961,644.723 (meters)                     COMP
 AJ8019  LAPLACE CORR    -         -3.35  (seconds)                    DEFLEC18
 AJ8019  DYNAMIC HEIGHT  -         15.103 (meters)       49.55  (feet) COMP
 AJ8019  MODELED GRAVITY -    980,023.7   (mgal)                       NAVD 88
 AJ8019
 AJ8019  VERT ORDER      -  SECOND    CLASS I
 AJ8019
 AJ8019  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8019  Standards:
 AJ8019         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8019            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8019  -------------------------------------------------------------------
 AJ8019  NETWORK    0.45   0.67           0.19   0.18   0.34      0.03786035
 AJ8019  -------------------------------------------------------------------
 AJ8019  Click here for local accuracies and other accuracy information.
 AJ8019
 AJ8019.The horizontal coordinates were established by GPS observations
 AJ8019.and adjusted by the National Geodetic Survey in June 2012.
 AJ8019
 AJ8019.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8019.been affixed to the stable North American tectonic plate. See 
 AJ8019.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8019
 AJ8019.The horizontal coordinates are valid at the epoch date displayed above
 AJ8019.which is a decimal equivalence of Year/Month/Day.
 AJ8019
 AJ8019.The orthometric height was determined by differential leveling and
 AJ8019.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8019.in November 2003.
 AJ8019
 AJ8019.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8019.GEOID18 height accuracy estimate available here.
 AJ8019
 AJ8019.Click photographs - Photos may exist for this station.
 AJ8019
 AJ8019.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8019
 AJ8019.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8019
 AJ8019.The ellipsoidal height was determined by GPS observations
 AJ8019.and is referenced to NAD 83.
 AJ8019
 AJ8019.The dynamic height is computed by dividing the NAVD 88
 AJ8019.geopotential number by the normal gravity value computed on the
 AJ8019.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8019.degrees latitude (g = 980.6199 gals.).
 AJ8019
 AJ8019.The modeled gravity was interpolated from observed gravity values.
 AJ8019
 AJ8019. The following values were computed from the NAD 83(2011) position.
 AJ8019
 AJ8019;                    North         East     Units Scale Factor Converg.
 AJ8019;SPC MD       -   109,077.271   481,973.071   MT  0.99995788   +0 35 27.7
 AJ8019;SPC MD       -   357,864.35  1,581,273.32   sFT  0.99995788   +0 35 27.7
 AJ8019;UTM  18      - 4,277,969.949   407,899.669   MT  0.99970446   -0 39 39.5
 AJ8019
 AJ8019!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8019!SPC MD       -   1.00000311  x   0.99995788  =   0.99996099
 AJ8019!UTM  18      -   1.00000311  x   0.99970446  =   0.99970757
 AJ8019
 AJ8019_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0789977969(NAD 83)
 AJ8019
 AJ8019                          SUPERSEDED SURVEY CONTROL
 AJ8019
 AJ8019  NAD 83(2007)-  38 38 43.80563(N)    076 03 30.02957(W) AD(2002.00) 0
 AJ8019  ELLIP H (02/10/07)  -19.780  (m)                       GP(2002.00)    
 AJ8019  NAD 83(1991)-  38 38 43.80547(N)    076 03 30.02955(W) AD(       ) A
 AJ8019  ELLIP H (02/12/02)  -19.769  (m)                       GP(       ) 4 1
 AJ8019  NAVD 88 (02/12/02)   15.1    (m)  GEOID99  model used  GPS OBS        
 AJ8019
 AJ8019.Superseded values are not recommended for survey control.
 AJ8019
 AJ8019.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8019.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8019
 AJ8019_MARKER: DD = SURVEY DISK
 AJ8019_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8019_STAMPING: HOWELL 1990
 AJ8019_MARK LOGO: MDSHA
 AJ8019_MAGNETIC: N = NO MAGNETIC MATERIAL
 AJ8019_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8019+STABILITY: SURFACE MOTION
 AJ8019_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8019+SATELLITE: SATELLITE OBSERVATIONS - August 22, 2017
 AJ8019
 AJ8019  HISTORY     - Date     Condition        Report By
 AJ8019  HISTORY     - 1990     MONUMENTED       MDSHA
 AJ8019  HISTORY     - 20000515 GOOD             MDSHA
 AJ8019  HISTORY     - 20020205 GOOD             MDSHA
 AJ8019  HISTORY     - 20020624 GOOD             MDSHA
 AJ8019  HISTORY     - 20021002 GOOD             USPSQD
 AJ8019  HISTORY     - 20060829 GOOD             JMTMD
 AJ8019  HISTORY     - 20170822 GOOD             INDIV
 AJ8019
 AJ8019                          STATION DESCRIPTION
 AJ8019
 AJ8019'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8019'THE STATION IS LOCATED ABOUT 0.5 MILES (0.8 KM) SOUTH OF TRAPPE, AND
 AJ8019'6.9 MILES (11.1 KM) NORTH OF CAMBRIDGE.  TO REACH THE STATION FROM THE
 AJ8019'INTERSECTION OF U.S.HIGHWAY 50 AND STATE HIGHWAY 565 IN TRAPPE, GO
 AJ8019'SOUTH ALONG U.S.HIGHWAY 50 FOR 0.4 MILES (0.6 KM) TO THE STATION ON
 AJ8019'THE LEFT IN THE GRASS MEDIAN.  THE STATION IS A MARYLAND STATE SURVEY
 AJ8019'DISK SET IN THE TOP OF A 8 INCH ROUND CONCRETE MONUMENT WHICH IS FLUSH
 AJ8019'WITH THE GROUND.  IT IS 50.0 FEET (15.2 M) EAST OF THE CENTER LINE OF
 AJ8019'THE SOUTHBOUND LANES OF U.S.HIGHWAY 50, 33.0 FEET (10.1 M) WEST OF THE
 AJ8019'CENTER LINE OF THE NORTHBOUND LANES OF THE HIGHWAY, 55.5 FEET (16.9 M)
 AJ8019'NORTH OF THE CENTER OF A CONCRETE DROP INLET, 70.0 FEET (21.3 M)
 AJ8019'SOUTHWEST OF POWER POLE NUMBER 33823-03463, AND ABOUT LEVEL WITH THE
 AJ8019'NORTHBOUND LANES OF THE HIGHWAY.
 AJ8019
 AJ8019                          STATION RECOVERY (2002)
 AJ8019
 AJ8019'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 AJ8019'RECOVERED AS DESCRIBED.
 AJ8019
 AJ8019                          STATION RECOVERY (2002)
 AJ8019
 AJ8019'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 AJ8019'RECOVERED AS DESCRIBED.
 AJ8019
 AJ8019                          STATION RECOVERY (2002)
 AJ8019
 AJ8019'RECOVERY NOTE BY US POWER SQUADRON 2002 (KGS)
 AJ8019'RECOVERED IN GOOD CONDITION.
 AJ8019
 AJ8019                          STATION RECOVERY (2006)
 AJ8019
 AJ8019'RECOVERY NOTE BY JMT ENGINEERING 2006 (BJB)
 AJ8019'RECOVERED IN GOOD CONDITION.
 AJ8019
 AJ8019                          STATION RECOVERY (2017)
 AJ8019
 AJ8019'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2017 (WRA)
 AJ8019'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4885 ***********************************************************************
 JV4885  DESIGNATION -  HOWELL POINT 15
 JV4885  PID         -  JV4885
 JV4885  STATE/COUNTY-  MD/KENT
 JV4885  COUNTRY     -  US
 JV4885  USGS QUAD   -  BETTERTON (2017)
 JV4885
 JV4885                         *CURRENT SURVEY CONTROL
 JV4885  ______________________________________________________________________
 JV4885* NAD 83(1991) POSITION- 39 22 18.23965(N) 076 06 41.03592(W)   ADJUSTED
 JV4885* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV4885  ______________________________________________________________________
 JV4885  GEOID HEIGHT    -        -33.325 (meters)                     GEOID18
 JV4885  LAPLACE CORR    -         -0.71  (seconds)                    DEFLEC18
 JV4885  HORZ ORDER      -  THIRD
 JV4885
 JV4885.The horizontal coordinates were established by classical geodetic methods
 JV4885.and adjusted by the National Geodetic Survey in January 1992.
 JV4885
 JV4885.The orthometric height was scaled from a topographic map.
 JV4885
 JV4885.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4885.GEOID18 height accuracy estimate available here.
 JV4885
 JV4885.Click photographs - Photos may exist for this station.
 JV4885
 JV4885.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4885
 JV4885. The following values were computed from the NAD 83(1991) position.
 JV4885
 JV4885;                    North         East     Units Scale Factor Converg.
 JV4885;SPC MD       -   189,646.945   476,569.728   MT  0.99998725   +0 33 27.8
 JV4885;SPC MD       -   622,200.02  1,563,545.85   sFT  0.99998725   +0 33 27.8
 JV4885;UTM  18      - 4,358,618.573   404,266.438   MT  0.99971284   -0 42 18.2
 JV4885
 JV4885!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4885!SPC MD       -   1.00000495  x   0.99998725  =   0.99999220
 JV4885!UTM  18      -   1.00000495  x   0.99971284  =   0.99971779
 JV4885
 JV4885:                Primary Azimuth Mark                     Grid Az
 JV4885:SPC MD       -  14                                       062 12 20.6
 JV4885:UTM  18      -  14                                       063 28 06.6
 JV4885
 JV4885_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0426658618(NAD 83)
 JV4885
 JV4885|---------------------------------------------------------------------|
 JV4885| PID    Reference Object                     Distance      Geod. Az  |
 JV4885|                                                           dddmmss.s |
 JV4885| JV4871 N 2                                 APPROX. 6.8 KM 0040956.2 |
 JV4885| JV4847 14                                  APPROX. 7.5 KM 0624548.4 |
 JV4885| JV4889 HOWELL POINT TOWER 5                359.816 METERS 10930     |
 JV4885| JV4897 HOWELL POINT LIGHTHOUSE              44.328 METERS 13333     |
 JV4885| JV4896 HOWELL POINT LIGHT                   48.860 METERS 13411     |
 JV4885| CA9543 HOWELL POINT 15 RM                   56.070 METERS 16221     |
 JV4885| JV4934 L TOWER OLD                         APPROX. 6.6 KM 2781530.0 |
 JV4885|---------------------------------------------------------------------|
 JV4885
 JV4885                          SUPERSEDED SURVEY CONTROL
 JV4885
 JV4885  NAD 83(1986)-  39 22 18.23262(N)    076 06 41.04274(W) AD(       ) 3
 JV4885  NAD 27      -  39 22 17.84000(N)    076 06 42.22700(W) AD(       ) 3
 JV4885  USSD        -  39 22 18.21300(N)    076 06 42.07400(W) AD(       ) 3
 JV4885
 JV4885.Superseded values are not recommended for survey control.
 JV4885
 JV4885.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4885.See file dsdata.pdf to determine how the superseded data were derived.
 JV4885
 JV4885_MARKER: DD = SURVEY DISK
 JV4885_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4885_MARK LOGO: USACE
 JV4885_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4885+STABILITY: SURFACE MOTION
 JV4885
 JV4885  HISTORY     - Date     Condition        Report By
 JV4885  HISTORY     - 1918     MONUMENTED       USACE
 JV4885  HISTORY     - 1937     GOOD             CGS
 JV4885  HISTORY     - 1939     GOOD             CGS
 JV4885  HISTORY     - 1954     SEE DESCRIPTION  CGS
 JV4885
 JV4885                          STATION DESCRIPTION
 JV4885
 JV4885'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1918 (JAD)
 JV4885'ON EASTERN SIDE OF CHESAPEAKE BAY, SW OF ENTRANCE TO SASSAFRAS
 JV4885'RIVER, ON SW SIDE OF SAND SPIT OFF HOWELL POINT BLUFF, ABOUT 1
 JV4885'METER ABOVE HIGH WATER AND 12 METERS FROM WATERS EDGE.  THE
 JV4885'UNDERGROUND MARK IS A NAIL IN CONCRETE.
 JV4885'THE SURFACE STATION MARK IS A BRONZE TABLET SET IN A
 JV4885'CONCRETE POST.  THE REFERENCE MARK IS A
 JV4885'BRONZE TABLET SET IN A CONCRETE.
 JV4885'IT IS ON GROUND ABOUT 1 METER HIGHER THAN THE STATION
 JV4885'ITSELF AND NEAR A CLUMP OF BUSHES AND SMALL CEDAR TREES, AND
 JV4885'56.070 METERS (183.96 FEET) FROM THE STATION
 JV4885'S 17 DEG 39 MIN E.
 JV4885
 JV4885                          STATION RECOVERY (1937)
 JV4885
 JV4885'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (JCP)
 JV4885'RECOVERED AS DESCRIBED IN GOOD CONDITION.  THE U.S. ENGINEERS
 JV4885'ERECTED A SIGNAL OVER THIS STATION FOR USE IN CONNECTING THEIR
 JV4885'TRIANGULATION.  THIS POINT IS IDENTICAL WITH U.S. ENGINEERS
 JV4885'STATION 15.
 JV4885
 JV4885                          STATION RECOVERY (1939)
 JV4885
 JV4885'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4885'STATION MARK AND REFERENCE MARK RECOVERED IN GOOD CONDITION.
 JV4885'
 JV4885'STATION IS LOCATED ON THE E SIDE OF CHESAPEAKE BAY, 2-1/2
 JV4885'MILES W OF BETTERTON, MARYLAND, SW OF THE ENTRANCE TO SASSAFRAS
 JV4885'RIVER, NEAR THE WESTERNMOST POINT OF A LARGE SAND SPIT OFF HOWELL
 JV4885'POINT BLUFF, ABOUT ONE METER ABOVE HIGH WATER AND 12 METERS
 JV4885'FROM HIGH-WATER LINE.
 JV4885'
 JV4885'STATION MARK IS A BRONZE DISK SET ATOP AN 8-INCH SQUARE CONCRETE
 JV4885'POST PROJECTING 2 INCHES ABOVE THE SURFACE OF THE SAND.
 JV4885'
 JV4885'THE REFERENCE MARK IS A STANDARD REFERENCE DISK SET ATOP A
 JV4885'SQUARE CONCRETE POST 184.0 FEET S OF THE STATION NEAR A SMALL
 JV4885'CLUMP OF BRUSH.
 JV4885
 JV4885                          STATION RECOVERY (1954)
 JV4885
 JV4885'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (WVP)
 JV4885'THE STATION WAS FOUND LYING ON ITS SIDE ABOUT 10 FEET FROM THE
 JV4885'WATERS EDGE.  THE DISK WAS REMOVED AND RETURNED TO THE OFFICE.  THE
 JV4885'REFERENCE MARK WAS FOUND INTACT BUT THE DISK WAS REMOVED AND
 JV4885'RETURNED TO THE OFFICE.
 JV4885'
 JV4885'THE KENT CONCRETE CO. IS DREDGING THE BEACH FOR GRAVEL AT HOWELLS
 JV4885'POINT SO NO ATTEMPT WAS MADE TO ESTABLISH ANOTHER STATION IN THE
 JV4885'IMMEDIATE VICINITY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4860 ***********************************************************************
 JV4860  DESIGNATION -  HOWELL POINT CHAN REAR RNG LT
 JV4860  PID         -  JV4860
 JV4860  STATE/COUNTY-  MD/CECIL
 JV4860  COUNTRY     -  US
 JV4860  USGS QUAD   -  SPESUTIE (2016)
 JV4860
 JV4860                         *CURRENT SURVEY CONTROL
 JV4860  ______________________________________________________________________
 JV4860* NAD 83(1991) POSITION- 39 24 22.89596(N) 076 01 36.61387(W)   ADJUSTED
 JV4860  ______________________________________________________________________
 JV4860  GEOID HEIGHT    -        -33.369 (meters)                     GEOID18
 JV4860  LAPLACE CORR    -         -1.11  (seconds)                    DEFLEC18
 JV4860  HORZ ORDER      -  THIRD
 JV4860
 JV4860.The horizontal coordinates were established by classical geodetic methods
 JV4860.and adjusted by the National Geodetic Survey in January 1992.
 JV4860
 JV4860.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4860.GEOID18 height accuracy estimate available here.
 JV4860
 JV4860.Click photographs - Photos may exist for this station.
 JV4860
 JV4860.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4860
 JV4860. The following values were computed from the NAD 83(1991) position.
 JV4860
 JV4860;                    North         East     Units Scale Factor Converg.
 JV4860;SPC MD       -   193,565.353   483,815.065   MT  0.99999266   +0 36 38.8
 JV4860;SPC MD       -   635,055.66  1,587,316.59   sFT  0.99999266   +0 36 38.8
 JV4860;UTM  18      - 4,362,375.289   411,594.273   MT  0.99969623   -0 39 06.8
 JV4860
 JV4860_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1159462375(NAD 83)
 JV4860
 JV4860                          SUPERSEDED SURVEY CONTROL
 JV4860
 JV4860  NAD 83(1986)-  39 24 22.88851(N)    076 01 36.62040(W) AD(       ) 3
 JV4860  NAD 27      -  39 24 22.49900(N)    076 01 37.81800(W) AD(       ) 3
 JV4860
 JV4860.Superseded values are not recommended for survey control.
 JV4860
 JV4860.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4860.See file dsdata.pdf to determine how the superseded data were derived.
 JV4860
 JV4860_MARKER: 15 = RANGE MARKER
 JV4860
 JV4860  HISTORY     - Date     Condition        Report By
 JV4860  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4860
 JV4860                          STATION DESCRIPTION
 JV4860
 JV4860'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4860'THE LIGHT IS LOCATED ABOUT 2 MILES N OF THE ENTRANCE TO THE
 JV4860'SASSAFRAS RIVER, 200 YARDS NW OF THE NW SHORE OF GROVE NECK IN
 JV4860'ABOUT 3 FEET OF WATER.
 JV4860'
 JV4860'THE POINT SIGHTED UPON WAS THE CENTER OF THE TOWER UPON WHICH THE
 JV4860'RANGE LANTERN RESTS.  THE TOWER IS OF SKELETON STEEL CONSTRUCTION
 JV4860'AND SETS ON TOP OF A CONCRETE SLAB SUPPORTED BY STEEL PILING.
 JV4860'
 JV4860'THE HEIGHT OF THE LANTERN ABOVE HIGH WATER IS APPROXIMATELY 40
 JV4860'FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4896 ***********************************************************************
 JV4896  DESIGNATION -  HOWELL POINT LIGHT
 JV4896  PID         -  JV4896
 JV4896  STATE/COUNTY-  MD/KENT
 JV4896  COUNTRY     -  US
 JV4896  USGS QUAD   -  BETTERTON (2017)
 JV4896
 JV4896                         *CURRENT SURVEY CONTROL
 JV4896  ______________________________________________________________________
 JV4896* NAD 83(1991) POSITION- 39 22 17.13528(N) 076 06 39.57233(W)   ADJUSTED
 JV4896* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV4896  ______________________________________________________________________
 JV4896  GEOID HEIGHT    -        -33.325 (meters)                     GEOID18
 JV4896  LAPLACE CORR    -         -0.70  (seconds)                    DEFLEC18
 JV4896  HORZ ORDER      -  THIRD
 JV4896
 JV4896.The horizontal coordinates were established by classical geodetic methods
 JV4896.and adjusted by the National Geodetic Survey in January 1992.
 JV4896
 JV4896.The orthometric height was scaled from a topographic map.
 JV4896
 JV4896.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4896.GEOID18 height accuracy estimate available here.
 JV4896
 JV4896.Click photographs - Photos may exist for this station.
 JV4896
 JV4896.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4896
 JV4896. The following values were computed from the NAD 83(1991) position.
 JV4896
 JV4896;                    North         East     Units Scale Factor Converg.
 JV4896;SPC MD       -   189,613.229   476,605.091   MT  0.99998720   +0 33 28.7
 JV4896;SPC MD       -   622,089.40  1,563,661.87   sFT  0.99998720   +0 33 28.7
 JV4896;UTM  18      - 4,358,584.096   404,301.040   MT  0.99971276   -0 42 17.3
 JV4896
 JV4896!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4896!SPC MD       -   1.00000495  x   0.99998720  =   0.99999215
 JV4896!UTM  18      -   1.00000495  x   0.99971276  =   0.99971771
 JV4896
 JV4896_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0430158584(NAD 83)
 JV4896
 JV4896                          SUPERSEDED SURVEY CONTROL
 JV4896
 JV4896  NAD 83(1986)-  39 22 17.12825(N)    076 06 39.57915(W) AD(       ) 3
 JV4896  NAD 27      -  39 22 16.74500(N)    076 06 40.75600(W) AD(       ) 3
 JV4896
 JV4896.Superseded values are not recommended for survey control.
 JV4896
 JV4896.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4896.See file dsdata.pdf to determine how the superseded data were derived.
 JV4896
 JV4896_MARKER: 14 = NAVIGATION LIGHT
 JV4896
 JV4896  HISTORY     - Date     Condition        Report By
 JV4896  HISTORY     - 1939     FIRST OBSERVED   CGS
 JV4896  HISTORY     - 1939     GOOD             CGS
 JV4896
 JV4896                          STATION DESCRIPTION
 JV4896
 JV4896'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4896'LIGHT IS LOCATED ON THE EASTERN SHORE OF CHESAPEAKE BAY, SW OF
 JV4896'THE ENTRANCE TO THE SASSAFRAS RIVER, ON THE SW SIDE OF A SAND
 JV4896'SPIT OFF HOWELL POINT BLUFF, ABOUT 60 METERS E OF HIGH-WATER
 JV4896'LINE AND 48.9 METERS E OF TRIANGULATION STATION HOWELL POINT,
 JV4896'1918.  THE LIGHT IS ELEVATED APPROXIMATELY 15 FEET ON A STEEL
 JV4896'TOWER OVER A BATTERY HOUSE.  POINT SIGHTED ON WAS THE SPIKE ON
 JV4896'TOP OF THE LANTERN.
 JV4896'
 JV4896'TO REACH THE STATION FROM BETTERTON, MARYLAND, FOLLOW THE PAVED
 JV4896'ROAD S FROM THE WHARF 0.6 MILE.  TURN RIGHT FOR 1.0 MILE.  TURN
 JV4896'RIGHT AND FOLLOW ROAD AROUND TO THE LEFT FOR 1.0 MILE TO
 JV4896'HOUSE AND BARN.  FOLLOW LANE BETWEEN HOUSE AND BARN, ALONG S SIDE
 JV4896'OF FIELD AND THROUGH PEAR ORCHARD TO WITHIN 50 YARDS OF ARMY
 JV4896'OBSERVATION TOWER.  TAKE LANE LEADING OFF TO THE RIGHT AND
 JV4896'FOLLOW DOWN THE BLUFF AND OUT ONTO THE SAND SPIT TO THE LIGHT.
 JV4896
 JV4896                          STATION RECOVERY (1939)
 JV4896
 JV4896'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4896'THE LIGHT IS LOCATED ABOUT 2-1/2 MILES W OF BETTERTON, MARYLAND,
 JV4896'ON THE SAND SPIT MAKING OUT FROM THE BLUFF AT HOWELL POINT.  THE
 JV4896'LIGHT IS APPROXIMATELY 35 METERS E OF THE WESTERNMOST POINT OF
 JV4896'THE SAND SPIT AND IS ELEVATED ABOUT 15 FEET ABOVE THE SURFACE
 JV4896'OF THE GROUND ON A WHITE 12 BY 12 INCH TIMBER.
 JV4896'
 JV4896'THE FIFTH LIGHTHOUSE DISTRICT SUB-OFFICE IN BALTIMORE, MARYLAND
 JV4896'REPORT THAT THEY EXPECT TO REMOVE THE LIGHT TO A NEW STRUCTURE
 JV4896'IN THE NEAR FUTURE.  THE NEW STRUCTURE WILL BE IN THE IMMEDIATE
 JV4896'VICINITY OF THE LIGHTS PRESENT POSITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4897 ***********************************************************************
 JV4897  DESIGNATION -  HOWELL POINT LIGHTHOUSE
 JV4897  PID         -  JV4897
 JV4897  STATE/COUNTY-  MD/KENT
 JV4897  COUNTRY     -  US
 JV4897  USGS QUAD   -  BETTERTON (2017)
 JV4897
 JV4897                         *CURRENT SURVEY CONTROL
 JV4897  ______________________________________________________________________
 JV4897* NAD 83(1991) POSITION- 39 22 17.24932(N) 076 06 39.69372(W)   ADJUSTED
 JV4897* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 JV4897  ______________________________________________________________________
 JV4897  GEOID HEIGHT    -        -33.325 (meters)                     GEOID18
 JV4897  LAPLACE CORR    -         -0.70  (seconds)                    DEFLEC18
 JV4897  HORZ ORDER      -  THIRD
 JV4897
 JV4897.The horizontal coordinates were established by classical geodetic methods
 JV4897.and adjusted by the National Geodetic Survey in January 1992.
 JV4897
 JV4897.The orthometric height was scaled from a topographic map.
 JV4897
 JV4897.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4897.GEOID18 height accuracy estimate available here.
 JV4897
 JV4897.Click photographs - Photos may exist for this station.
 JV4897
 JV4897.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4897
 JV4897. The following values were computed from the NAD 83(1991) position.
 JV4897
 JV4897;                    North         East     Units Scale Factor Converg.
 JV4897;SPC MD       -   189,616.718   476,602.151   MT  0.99998720   +0 33 28.6
 JV4897;SPC MD       -   622,100.85  1,563,652.22   sFT  0.99998720   +0 33 28.6
 JV4897;UTM  18      - 4,358,587.647   404,298.178   MT  0.99971277   -0 42 17.4
 JV4897
 JV4897!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4897!SPC MD       -   1.00000495  x   0.99998720  =   0.99999215
 JV4897!UTM  18      -   1.00000495  x   0.99971277  =   0.99971772
 JV4897
 JV4897_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0429858587(NAD 83)
 JV4897
 JV4897                          SUPERSEDED SURVEY CONTROL
 JV4897
 JV4897  NAD 83(1986)-  39 22 17.24208(N)    076 06 39.70082(W) AD(       ) 3
 JV4897  NAD 27      -  39 22 16.85900(N)    076 06 40.87800(W) AD(       ) 3
 JV4897
 JV4897.Superseded values are not recommended for survey control.
 JV4897
 JV4897.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4897.See file dsdata.pdf to determine how the superseded data were derived.
 JV4897
 JV4897_MARKER: 13 = LIGHTHOUSE
 JV4897
 JV4897  HISTORY     - Date     Condition        Report By
 JV4897  HISTORY     - 1933     FIRST OBSERVED   CGS
 JV4897  HISTORY     - 1938     GOOD             CGS
 JV4897
 JV4897                          STATION DESCRIPTION
 JV4897
 JV4897'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JV4897'STATION RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4889 ***********************************************************************
 JV4889  DESIGNATION -  HOWELL POINT TOWER 5
 JV4889  PID         -  JV4889
 JV4889  STATE/COUNTY-  MD/KENT
 JV4889  COUNTRY     -  US
 JV4889  USGS QUAD   -  BETTERTON (2017)
 JV4889
 JV4889                         *CURRENT SURVEY CONTROL
 JV4889  ______________________________________________________________________
 JV4889* NAD 83(1991) POSITION- 39 22 14.34470(N) 076 06 26.86628(W)   ADJUSTED
 JV4889* NAVD 88 ORTHO HEIGHT -    20.    (meters)       66.    (feet) VERTCON3
 JV4889  ______________________________________________________________________
 JV4889  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 JV4889  LAPLACE CORR    -         -0.67  (seconds)                    DEFLEC18
 JV4889  HORZ ORDER      -  SECOND
 JV4889
 JV4889.The horizontal coordinates were established by classical geodetic methods
 JV4889.and adjusted by the National Geodetic Survey in January 1992.
 JV4889
 JV4889.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4889.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4889
 JV4889.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4889.GEOID18 height accuracy estimate available here.
 JV4889
 JV4889.Click photographs - Photos may exist for this station.
 JV4889
 JV4889.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4889
 JV4889. The following values were computed from the NAD 83(1991) position.
 JV4889
 JV4889;                    North         East     Units Scale Factor Converg.
 JV4889;SPC MD       -   189,530.142   476,910.053   MT  0.99998708   +0 33 36.7
 JV4889;SPC MD       -   621,816.81  1,564,662.40   sFT  0.99998708   +0 33 36.7
 JV4889;UTM  18      - 4,358,494.332   404,604.014   MT  0.99971205   -0 42 09.2
 JV4889
 JV4889!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4889!SPC MD       -   1.00000213  x   0.99998708  =   0.99998921
 JV4889!UTM  18      -   1.00000213  x   0.99971205  =   0.99971418
 JV4889
 JV4889_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0460458494(NAD 83)
 JV4889
 JV4889|---------------------------------------------------------------------|
 JV4889| PID    Reference Object                     Distance      Geod. Az  |
 JV4889|                                                           dddmmss.s |
 JV4889| CA9544 HOWELL POINT TOWER 5 RM              21.929 METERS 07447     |
 JV4889| JV4899 HARRIS AZ MK RESET                  158.578 METERS 07652     |
 JV4889| JV4888 HARRIS                               11.085 METERS 26342     |
 JV4889|---------------------------------------------------------------------|
 JV4889
 JV4889                          SUPERSEDED SURVEY CONTROL
 JV4889
 JV4889  NAD 83(1986)-  39 22 14.33764(N)    076 06 26.87311(W) AD(       ) 2
 JV4889  NAD 27      -  39 22 13.94530(N)    076 06 28.05880(W) AD(       ) 2
 JV4889  USSD        -  39 22 14.32500(N)    076 06 27.93000(W) AD(       ) 3
 JV4889  NGVD 29 (07/19/86)   20.     (m)           66.     (f) VERT ANG       
 JV4889
 JV4889.Superseded values are not recommended for survey control.
 JV4889
 JV4889.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4889.See file dsdata.pdf to determine how the superseded data were derived.
 JV4889
 JV4889_MARKER: DS = TRIANGULATION STATION DISK
 JV4889_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4889
 JV4889  HISTORY     - Date     Condition        Report By
 JV4889  HISTORY     - 1918     MONUMENTED       CGS
 JV4889  HISTORY     - 1933     GOOD             CGS
 JV4889  HISTORY     - 1971     SEE DESCRIPTION  MDDNR
 JV4889  HISTORY     - 1973     GOOD             NGS
 JV4889
 JV4889                          STATION DESCRIPTION
 JV4889
 JV4889'DESCRIBED BY COAST AND GEODETIC SURVEY 1918 (EDB)
 JV4889'ON EASTERN SHORE OF CHESAPEAKE BAY, SW OF ENTRANCE TO SASSAFRAS
 JV4889'RIVER, ABOUT 100 METERS S OF ROAD COMING UP BLUFF AND 359
 JV4889'METERS FROM TRIANGULATION STATION ON SAND SPIT ON HOWELL POINT
 JV4889'BLUFF, 25 METERS ABOVE HIGH WATER, 12 METERS FROM EDGE OF
 JV4889'BLUFF.  STATION IS IN AN ORCHARD AND AN OBSERVATION TOWER WAS
 JV4889'ERECTED OVER IT.  THE UNDERGROUND MARK IS A NAIL IN CONCRETE AS
 JV4889'THE SURFACE STATION MARK IS A BRONZE
 JV4889'TABLET SET IN A CONCRETE POST.  IT IS
 JV4889'21.94 METERS (72.0 FEET) FROM STATION N 74 DEG 49 MIN E.
 JV4889'PHOTOGRAPHIC HOUSE IS 14.94 METERS (49.0 FEET)
 JV4889'FROM STATION N 35 DEG 30 MIN E.  N.
 JV4889
 JV4889                          STATION RECOVERY (1933)
 JV4889
 JV4889'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV4889'RECOVERED AS DESCRIBED EXCEPT THAT THE REFERENCE MARK IS 72.05
 JV4889'FEET FROM THE STATION.  PHOTOGRAPHIC HOUSE IS 29.2 FEET FROM
 JV4889'THE STATION.
 JV4889'
 JV4889'A TRAVERSE TIE WAS MADE TO THIS STATION AND THE DIRECTION TAKEN
 JV4889'TO THE VENTILATOR ON TOP OF THE TOWER WHICH IS PLUMBED OVER THE
 JV4889'STATION UNDER THE TOWER.
 JV4889'
 JV4889'SEE LIST AND DESCRIPTION OF STATION HARRIS FOR DISTANCES AND
 JV4889'DIRECTIONS.
 JV4889
 JV4889                          STATION RECOVERY (1971)
 JV4889
 JV4889'RECOVERY NOTE BY MD DEPT OF NAT RES 1971 (GEH)
 JV4889'INFORMED BY DEPT. ARMY ABERDEEN PROVING GROUND THAT THE OLD
 JV4889'TOWER REMOVED AND NEW TOWER ERRECTED AT DIST. OF 16.6 M
 JV4889'08 FT 55 IN FROM OLD TOWER.  CONDITION OF OLD STA. UNKNOWN
 JV4889
 JV4889                          STATION RECOVERY (1973)
 JV4889
 JV4889'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN)
 JV4889'THE STATION MARK AND THE REFERENCE MARK WERE RECOVERED AND FOUND
 JV4889'IN GOOD CONDITION.  A SHORTER DISTANCE OF 0.07 FOOT WAS NOTED TO
 JV4889'THE REFERENCE.  THE 1918 DISTANCE WAS USED AS A CHECK.  THE AZIMUTH
 JV4889'MARK FOR TRIANGULATION STATION HARRIS 1933 WAS INTERSECTED AT
 JV4889'THIS DATE.  TRIANGULATION STATION HARRIS 1933 WAS ALSO
 JV4889'INTERSECTED, SEE DESCRIPTION THEREOF.
 JV4889'
 JV4889'A COMPLETE NEW DESCRIPTION OF THE STATION FOLLOWS.
 JV4889'
 JV4889'THE STATION IS LOCATED ON A HIGH HILL OVERLOOKING THE CHESAPEAKE
 JV4889'BAY.  IT IS ABOUT 10 MILES SOUTHEAST OF ABERDEENE, 2 MILES WEST OF
 JV4889'BETTERTON AND ON WHAT IS KNOWN AS HOWELL POINT.  THE PROPERTY
 JV4889'IS OWNED BY THE STATE OF MARYLAND.
 JV4889'
 JV4889'TO REACH THE STATION FROM THE FIRE STATION IN BETTERTON, GO
 JV4889'WEST ON HOWELL POINT ROAD FOR 1.6 MILES TO THE END OF THE PAVED
 JV4889'ROAD AT THE ENTRANCE TO A FARM.  CONTINUE WEST ON A FARM ROAD FOR
 JV4889'0.4 MILE TO A T-INTERSECTION.  TURN RIGHT THEN LEFT AND GO NORTH
 JV4889'AND WEST ON THE FARM ROAD FOR 0.45 MILE TO A WOODED AREA ON THE
 JV4889'RIGHT AND HARRIS 1933 AZIMUTH MARK ON THE RIGHT.  CONTINUE WEST
 JV4889'ON THE FARM ROAD FOR 0.15 MILE TO THE STATION ON THE RIGHT,
 JV4889'UNDER THE MOST NORTHEAST ONE OF TWO OBSERVATIONS TOWERS.
 JV4889'
 JV4889'THE STATION MARK IS A STANDARD DISK STAMPED HOWELL POINT TOWER
 JV4889'NO 5 1918, SET IN THE TOP OF A 18-INCH SQUARE CONCRETE MONUMENT
 JV4889'WHICH IS FLUSH WITH THE SURFACE.  IT IS IN THE APPROXIMATE CENTER
 JV4889'OF THE TOWER, 46 FEET NORTHEAST OF A WITNESS POST AND ABOUT 25
 JV4889'FEET EAST OF A BLUFF.
 JV4889'
 JV4889'THE REFERENCE MARK IS A STANDARD DISK STAMPED HOWELL POINT TOWER
 JV4889'NO 5 1918 RM, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE
 JV4889'MONUMENT WHICH PROJECTS 2 INCHES.  IT IS 114.1 FEET EAST OF
 JV4889'THE WITNESS POST AND 70 FEET EAST OF THE NORTHEAST LEG OF THE
 JV4889'SMALLEST ONE OF THE TWO TOWERS.
 JV4889'
 JV4889'HARRIS 1933 (AZIMUTH MARK) IS A STANDARD DISK STAMPED HARRIS
 JV4889'1933 RESET 1962, SET IN THE TOP OF A 10-INCH SQUARE CONCRETE
 JV4889'MONUMENT WHICH PROJECTS 1 INCH.  IT IS 12 FEET NORTH OF THE
 JV4889'CENTER OF THE FARM ROAD, 2 FEET SOUTHWEST OF A 16 INCH LOCUST TREE
 JV4889'AND 1.2 FEET SOUTH OF A WITNESS POST.
 JV4889'
 JV4889'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4889'2 MILES WEST OF BETTERTON.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7083 ***********************************************************************
 JV7083  DESIGNATION -  HOWL
 JV7083  PID         -  JV7083
 JV7083  STATE/COUNTY-  MD/KENT
 JV7083  COUNTRY     -  US
 JV7083  USGS QUAD   -  BETTERTON (2017)
 JV7083
 JV7083                         *CURRENT SURVEY CONTROL
 JV7083  ______________________________________________________________________
 JV7083* NAD 83(2011) POSITION- 39 22 17.57221(N) 076 06 25.71912(W)   ADJUSTED
 JV7083* NAD 83(2011) ELLIP HT-   -31.706 (meters)        (06/27/12)   ADJUSTED
 JV7083* NAD 83(2011) EPOCH   -  2010.00
 JV7083* NAVD 88 ORTHO HEIGHT -     1.6   (meters)        5.    (feet) VERTCON3
 JV7083  ______________________________________________________________________
 JV7083  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 JV7083  NAD 83(2011) X  -  1,185,465.970 (meters)                     COMP
 JV7083  NAD 83(2011) Y  - -4,792,808.395 (meters)                     COMP
 JV7083  NAD 83(2011) Z  -  4,024,268.918 (meters)                     COMP
 JV7083  LAPLACE CORR    -         -0.68  (seconds)                    DEFLEC18
 JV7083
 JV7083  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV7083  Standards:
 JV7083         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV7083            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV7083  -------------------------------------------------------------------
 JV7083  NETWORK    1.43   1.67           0.63   0.53   0.85      0.08575659
 JV7083  -------------------------------------------------------------------
 JV7083  Click here for local accuracies and other accuracy information.
 JV7083
 JV7083.The horizontal coordinates were established by GPS observations
 JV7083.and adjusted by the National Geodetic Survey in June 2012.
 JV7083
 JV7083.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV7083.been affixed to the stable North American tectonic plate. See 
 JV7083.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV7083
 JV7083.The horizontal coordinates are valid at the epoch date displayed above
 JV7083.which is a decimal equivalence of Year/Month/Day.
 JV7083
 JV7083.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV7083.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV7083
 JV7083.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7083.GEOID18 height accuracy estimate available here.
 JV7083
 JV7083.Click photographs - Photos may exist for this station.
 JV7083
 JV7083.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV7083
 JV7083.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV7083
 JV7083.The ellipsoidal height was determined by GPS observations
 JV7083.and is referenced to NAD 83.
 JV7083
 JV7083. The following values were computed from the NAD 83(2011) position.
 JV7083
 JV7083;                    North         East     Units Scale Factor Converg.
 JV7083;SPC MD       -   189,629.939   476,936.538   MT  0.99998722   +0 33 37.4
 JV7083;SPC MD       -   622,144.22  1,564,749.29   sFT  0.99998722   +0 33 37.4
 JV7083;UTM  18      - 4,358,593.495   404,632.683   MT  0.99971198   -0 42 08.5
 JV7083
 JV7083!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV7083!SPC MD       -   1.00000497  x   0.99998722  =   0.99999219
 JV7083!UTM  18      -   1.00000497  x   0.99971198  =   0.99971695
 JV7083
 JV7083_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0463258593(NAD 83)
 JV7083
 JV7083                          SUPERSEDED SURVEY CONTROL
 JV7083
 JV7083  NAD 83(2007)-  39 22 17.57240(N)    076 06 25.71981(W) AD(2002.00) 0
 JV7083  ELLIP H (02/10/07)  -31.683  (m)                       GP(2002.00)    
 JV7083  ELLIP H (08/30/02)  -31.685  (m)                       GP(       ) 4 2
 JV7083  NAD 83(1991)-  39 22 17.57220(N)    076 06 25.71985(W) AD(       ) 1
 JV7083  ELLIP H (12/03/93)  -31.712  (m)                       GP(       ) 4 1
 JV7083  NGVD 29 (12/03/93)    1.8    (m)  GEOID93  model used  GPS OBS        
 JV7083
 JV7083.Superseded values are not recommended for survey control.
 JV7083
 JV7083.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV7083.See file dsdata.pdf to determine how the superseded data were derived.
 JV7083
 JV7083_MARKER: DD = SURVEY DISK
 JV7083_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV7083_STAMPING: HOWL 1993
 JV7083_MARK LOGO: NOS
 JV7083_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV7083_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7083+STABILITY: SURFACE MOTION
 JV7083_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7083+SATELLITE: SATELLITE OBSERVATIONS - 1993
 JV7083
 JV7083  HISTORY     - Date     Condition        Report By
 JV7083  HISTORY     - 1993     MONUMENTED       NOS
 JV7083
 JV7083                          STATION DESCRIPTION
 JV7083
 JV7083'DESCRIBED BY NATIONAL OCEAN SERVICE 1993
 JV7083'STATION IS LOCATED ON THE SOUTH BANK OF THE SASSAFRAS RIVER AT THE
 JV7083'JUNCTION OF THE RIVER AND THE CHESAPEAKE BAY ON HOWELL POINT WEST OF
 JV7083'THE TOWN OF BETTERTON IN A GRASSY AREA AT THE BOTTOM OF A BLUFF.
 JV7083'TO REACH THE STATION FROM THE JUNCTION OF STATE ROUTE 298 AND STATE
 JV7083'ROUTE 292 SOUTH OF STILL POND, PROCEED NORTH ON 292 FOR 4.05 MI
 JV7083'(6.52 KM) TO LEFT TURN ON HOWELL POINT ROAD.  CONTINUE WEST ON HOWELL
 JV7083'POINT ROAD 1.5 MI (2.4 KM) TO THE ENTRANCE OF HOWELL POINT FARM.
 JV7083'CONTINUE THROUGH ON PAVED ROAD BEARING RIGHT FOR 0.75 MI (1.21 KM)
 JV7083'TO A PAVED ROAD RIGHT.  TURN RIGHT ON PAVED DOWN TO THE BOTTOM OF THE
 JV7083'BLUFF AND THE STATION IN GRASSY AREA TO THE RIGHT AND PICINIC TABLES
 JV7083'AHEAD.
 JV7083'STAITON MARK IS A STANDARD NOS ALUMINUM DISK STAMPED ---HOWL 1993---
 JV7083'CONNECTED TO A 42 IN ALUMINUM ROD DRIVEN INTO THE GROUND AND
 JV7083'SURROUNDED BY CONCRETE RECESSED 0.01 M (0.03 FT) BELOW THE SURFACE.
 JV7083'IT IS ABOUT 15 M (49.2 FT) NORTH OF A METAL WITNESS POST SIGN ALONG
 JV7083'THE BOTTOM OF THE BLUFF, 56 M (183.7 FT) SE OF THE SE CORNER SLAB OF
 JV7083'CONCRETE OF THE MOST EASTERLY OF THREE PICINIC SHEDS, AND 51 M
 JV7083'(167.3 FT) SOUTH OF THE APARENT HIGH WATER LINE OF WASHED UP DEBRIS
 JV7083'FROM THE RIVER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW1569 ***********************************************************************
 JW1569  CBN         -  This is a Cooperative Base Network Control Station.
 JW1569  DESIGNATION -  HOWSARE
 JW1569  PID         -  JW1569
 JW1569  STATE/COUNTY-  MD/ALLEGANY
 JW1569  COUNTRY     -  US
 JW1569  USGS QUAD   -  EVITTS CREEK (2016)
 JW1569
 JW1569                         *CURRENT SURVEY CONTROL
 JW1569  ______________________________________________________________________
 JW1569* NAD 83(2011) POSITION- 39 43 08.99221(N) 078 38 12.99682(W)   ADJUSTED
 JW1569* NAD 83(2011) ELLIP HT-   347.073 (meters)        (06/27/12)   ADJUSTED
 JW1569* NAD 83(2011) EPOCH   -  2010.00
 JW1569* NAVD 88 ORTHO HEIGHT -   379.917 (meters)     1246.44  (feet) ADJUSTED
 JW1569  ______________________________________________________________________
 JW1569  GEOID HEIGHT    -        -32.838 (meters)                     GEOID18
 JW1569  NAD 83(2011) X  -    967,976.925 (meters)                     COMP
 JW1569  NAD 83(2011) Y  - -4,816,657.387 (meters)                     COMP
 JW1569  NAD 83(2011) Z  -  4,054,271.761 (meters)                     COMP
 JW1569  LAPLACE CORR    -         -4.11  (seconds)                    DEFLEC18
 JW1569  DYNAMIC HEIGHT  -        379.699 (meters)     1245.73  (feet) COMP
 JW1569  MODELED GRAVITY -    980,041.1   (mgal)                       NAVD 88
 JW1569
 JW1569  VERT ORDER      -  SECOND    CLASS II
 JW1569
 JW1569  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JW1569  Standards:
 JW1569         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JW1569            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JW1569  -------------------------------------------------------------------
 JW1569  NETWORK    0.76   1.43           0.33   0.29   0.73      0.00897748
 JW1569  -------------------------------------------------------------------
 JW1569  Click here for local accuracies and other accuracy information.
 JW1569
 JW1569.The horizontal coordinates were established by GPS observations
 JW1569.and adjusted by the National Geodetic Survey in June 2012.
 JW1569
 JW1569.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JW1569.been affixed to the stable North American tectonic plate. See 
 JW1569.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JW1569
 JW1569.The horizontal coordinates are valid at the epoch date displayed above
 JW1569.which is a decimal equivalence of Year/Month/Day.
 JW1569
 JW1569.The orthometric height was determined by differential leveling and
 JW1569.adjusted by the NATIONAL GEODETIC SURVEY
 JW1569.in June 1991.
 JW1569
 JW1569.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW1569.GEOID18 height accuracy estimate available here.
 JW1569
 JW1569.Click photographs - Photos may exist for this station.
 JW1569
 JW1569.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JW1569
 JW1569.The Laplace correction was computed from DEFLEC18 derived deflections.
 JW1569
 JW1569.The ellipsoidal height was determined by GPS observations
 JW1569.and is referenced to NAD 83.
 JW1569
 JW1569.The dynamic height is computed by dividing the NAVD 88
 JW1569.geopotential number by the normal gravity value computed on the
 JW1569.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW1569.degrees latitude (g = 980.6199 gals.).
 JW1569
 JW1569.The modeled gravity was interpolated from observed gravity values.
 JW1569
 JW1569. The following values were computed from the NAD 83(2011) position.
 JW1569
 JW1569;                    North         East     Units Scale Factor Converg.
 JW1569;SPC MD       -   229,107.346   259,643.470   MT  1.00005818   -1 01 38.6
 JW1569;SPC MD       -   751,663.02    851,846.95   sFT  1.00005818   -1 01 38.6
 JW1569;SPC PA S     -    43,222.895   523,949.312   MT  1.00004039   -0 34 31.6
 JW1569;SPC PA S     -   141,807.11  1,718,990.37   sFT  1.00004039   -0 34 31.6
 JW1569;UTM  17      - 4,399,257.882   702,544.332   MT  1.00010509   +1 30 38.0
 JW1569
 JW1569!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JW1569!SPC MD       -   0.99994555  x   1.00005818  =   1.00000373
 JW1569!SPC PA S     -   0.99994555  x   1.00004039  =   0.99998594
 JW1569!UTM  17      -   0.99994555  x   1.00010509  =   1.00005064
 JW1569
 JW1569_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SQD0254499257(NAD 83)
 JW1569
 JW1569                          SUPERSEDED SURVEY CONTROL
 JW1569
 JW1569  NAD 83(2007)-  39 43 08.99241(N)    078 38 12.99758(W) AD(2002.00) 0
 JW1569  ELLIP H (02/10/07)  347.091  (m)                       GP(2002.00)    
 JW1569  ELLIP H (02/12/02)  347.087  (m)                       GP(       ) 4 1
 JW1569  NAD 83(1991)-  39 43 08.99294(N)    078 38 12.99737(W) AD(       ) B
 JW1569  ELLIP H (10/23/91)  347.063  (m)                       GP(       ) 4 1
 JW1569  NAVD 88             379.92   (m)         1246.5    (f) LEVELING    3  
 JW1569  NGVD 29             380.11   (m)         1247.1    (f) LEVELING    3  
 JW1569
 JW1569.Superseded values are not recommended for survey control.
 JW1569
 JW1569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW1569.See file dsdata.pdf to determine how the superseded data were derived.
 JW1569
 JW1569_MARKER: DH = HORIZONTAL CONTROL DISK
 JW1569_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JW1569_STAMPING: HOWSARE 1990
 JW1569_MARK LOGO: NGS
 JW1569_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JW1569_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JW1569+STABILITY: SURFACE MOTION
 JW1569_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JW1569+SATELLITE: SATELLITE OBSERVATIONS - March 27, 2000
 JW1569
 JW1569  HISTORY     - Date     Condition        Report By
 JW1569  HISTORY     - 1990     MONUMENTED       NGS
 JW1569  HISTORY     - 19901004 GOOD             NGS
 JW1569  HISTORY     - 19920721 GOOD             NOS
 JW1569  HISTORY     - 19990901 GOOD             HGSERV
 JW1569  HISTORY     - 20000327 GOOD             MDSHA
 JW1569
 JW1569                          STATION DESCRIPTION
 JW1569
 JW1569'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JW1569'10.5 KM (6.5 MI) EASTERLY ALONG U.S. HIGHWAY 40 FROM THE JUNCTION OF
 JW1569'U.S. HIGHWAY 40 ALTERNATE (EXIT 44) IN CUMBERLAND, THENCE 3.1 KM
 JW1569'(1.9 MI) NORTHERLY ALONG PLEASANT VALLEY ROAD (EXIT 51), 87.9 M
 JW1569'(288.4 FT) NORTHWEST OF THE ROAD CENTER, 10.3 M (33.8 FT) SOUTHWEST
 JW1569'OF A CHAIN-LINK FENCE AROUND THE MARYLAND VETERANS CEMETERY, 2.0 M
 JW1569'(6.6 FT) BELOW THE LEVEL OF THE ROAD, AND THE MONUMENT IS FLUSH WITH
 JW1569'THE GROUND SURFACE.
 JW1569
 JW1569                          STATION RECOVERY (1992)
 JW1569
 JW1569'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1992
 JW1569'RECOVERED IN GOOD CONDITION.
 JW1569
 JW1569                          STATION RECOVERY (1999)
 JW1569
 JW1569'RECOVERY NOTE BY HAMILTON GEODETIC SERVICES 1999 (JVH)
 JW1569'RECOVERED AS DESCRIBED.
 JW1569
 JW1569                          STATION RECOVERY (2000)
 JW1569
 JW1569'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JW1569'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1971 ***********************************************************************
 HU1971  DESIGNATION -  HU1971
 HU1971  PID         -  HU1971
 HU1971  STATE/COUNTY-  MD/CAROLINE
 HU1971  COUNTRY     -  US
 HU1971  USGS QUAD   -  HICKMAN (2016)
 HU1971
 HU1971                         *CURRENT SURVEY CONTROL
 HU1971  ______________________________________________________________________
 HU1971* NAD 83(1991) POSITION- 38 48 28.90305(N) 075 43 16.47376(W)   ADJUSTED
 HU1971* NAVD 88 ORTHO HEIGHT -    14.7   (meters)       48.    (feet) VERTCON3
 HU1971  ______________________________________________________________________
 HU1971  GEOID HEIGHT    -        -35.204 (meters)                     GEOID18
 HU1971  LAPLACE CORR    -         -2.91  (seconds)                    DEFLEC18
 HU1971  HORZ ORDER      -  SECOND
 HU1971
 HU1971.The horizontal coordinates were established by classical geodetic methods
 HU1971.and adjusted by the National Geodetic Survey in January 1992.
 HU1971
 HU1971.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1971.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1971
 HU1971.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1971.GEOID18 height accuracy estimate available here.
 HU1971
 HU1971.Click photographs - Photos may exist for this station.
 HU1971
 HU1971.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1971
 HU1971. The following values were computed from the NAD 83(1991) position.
 HU1971
 HU1971;                    North         East     Units Scale Factor Converg.
 HU1971;SPC MD       -   127,473.717   511,063.730   MT  0.99995054   +0 48 09.3
 HU1971;SPC MD       -   418,220.02  1,676,714.92   sFT  0.99995054   +0 48 09.3
 HU1971;UTM  18      - 4,295,720.689   437,377.560   MT  0.99964829   -0 27 07.3
 HU1971
 HU1971!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1971!SPC MD       -   1.00000322  x   0.99995054  =   0.99995376
 HU1971!UTM  18      -   1.00000322  x   0.99964829  =   0.99965151
 HU1971
 HU1971:                Primary Azimuth Mark                     Grid Az
 HU1971:SPC MD       -  DENTON RM 4                              313 48 13.2
 HU1971:UTM  18      -  DENTON RM 4                              315 03 29.8
 HU1971
 HU1971_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH3737795720(NAD 83)
 HU1971
 HU1971|---------------------------------------------------------------------|
 HU1971| PID    Reference Object                     Distance      Geod. Az  |
 HU1971|                                                           dddmmss.s |
 HU1971| HU1970 BOUNDARY MONUMENT 24 DEL MD          14.813 METERS 07850     |
 HU1971| DC7956 DC7956                               20.708 METERS 08504     |
 HU1971| DC7957 DC7957                               15.938 METERS 19014     |
 HU1971| DC7958 DC7958                               39.616 METERS 29911     |
 HU1971| HU2103 DENTON MUN TANK                     APPROX.12.8 KM 3131036.6 |
 HU1971| HU2102 DENTON RM 4                         APPROX.12.0 KM 3143622.5 |
 HU1971| HU1981 LEDENHAM AZ MK                      APPROX. 1.7 KM 3380406.2 |
 HU1971| HU1982 HICKMAN NUTTLES TOMATO STK          APPROX. 3.5 KM 3512440.5 |
 HU1971| HU2004 BURRS RM 4                          APPROX. 9.7 KM 3562823.6 |
 HU1971|---------------------------------------------------------------------|
 HU1971
 HU1971                          SUPERSEDED SURVEY CONTROL
 HU1971
 HU1971  NAD 83(1986)-  38 48 28.89639(N)    075 43 16.48954(W) AD(       ) 2
 HU1971  NAD 27      -  38 48 28.48680(N)    075 43 17.74540(W) AD(       ) 2
 HU1971  NGVD 29 (07/19/86)   14.9    (m)           49.     (f) VERT ANG       
 HU1971
 HU1971.Superseded values are not recommended for survey control.
 HU1971
 HU1971.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1971.See file dsdata.pdf to determine how the superseded data were derived.
 HU1971
 HU1971_MARKER: DS = TRIANGULATION STATION DISK
 HU1971_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1971_MARK LOGO: CGS
 HU1971_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1971_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1971+STABILITY: SURFACE MOTION
 HU1971_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HU1971+SATELLITE: SATELLITE OBSERVATIONS - April 23, 2009
 HU1971
 HU1971  HISTORY     - Date     Condition        Report By
 HU1971  HISTORY     - 1962     MONUMENTED       CGS
 HU1971  HISTORY     - 1987     GOOD             NGS
 HU1971  HISTORY     - 20090423 GOOD             GEOCAC
 HU1971
 HU1971                          STATION DESCRIPTION
 HU1971
 HU1971'DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (RWT)
 HU1971'THE STATION IS LOCATED IN A LOW, SWAMP AREA, IN A DENSE TIMBER,
 HU1971'ON PROPERTY OWNED BY MR. JOSEPH BARLEY.  LOCATED ABOUT 8.0 MILES
 HU1971'SOUTHEAST OF DENTON, MARYLAND, 8.0 MILES NORTHWEST OF BRIDGEVILLE,
 HU1971'DELAWARE AND ABOUT 0.5 MILE NORTH OF THE FOUNTAINVILLE INTERSTATE
 HU1971'FIRE TOWER.
 HU1971'
 HU1971'TO REACH THE STATION FROM THE POST OFFICE IN DENTON, MARYLAND.  GO
 HU1971'NORTH-NORTHEAST ON STATE HIGHWAY 404 FOR 8.4 MILES TO A CROSSROADS,
 HU1971'THIS IS ABOUT 0.4 MILE BEFORE REACHING THE FIRE TOWER AT THE
 HU1971'STATE LINE.  TURN LEFT AND GO NORTH-NORTHEAST ON A GRAVELED ROAD
 HU1971'FOR 0.4 MILE TO A FENCE CORNER AND A TRACK FIELD ROAD ON THE
 HU1971'RIGHT, EAST SIDE OF THE ROAD.  TURN RIGHT AND GO EAST ALONG THE
 HU1971'NORTH SIDE OF A FENCELINE FOR ABOUT 200.0 FEET TO THE EDGE OF
 HU1971'TIMBER, THENCE TURN LEFT AND GO NORTH ALONG THE WEST SIDE OF
 HU1971'TIMBERLINE FOR ABOUT 0.05 MILE TO THE NORTHWEST CORNER OF
 HU1971'TIMBER, THENCE TURN RIGHT AND GO EAST ALONG THE NORTH SIDE OF
 HU1971'TIMBER FOR 0.15 MILE TO THE SOUTHEAST CORNER OF A CULTIVATED
 HU1971'FIELD AND A FENCE CORNER AND A TRACK TIMBER ROAD.  PASS
 HU1971'THROUGH THE GATE AND CONTINUE EAST ON THE WOODS ROAD FOR 0.15
 HU1971'MILE TO A STANDARD METAL WITNESS POST AND MARKER.
 HU1971'BOUNDARY MONUMENT NO. 24 AND THE STATION.
 HU1971'
 HU1971'TO REACH THE STATION FROM THE POST OFFICE IN DENTON, MARYLAND.  GO
 HU1971'NORTH-NORTHEAST ON STATE HIGHWAY 404 FOR 8.4 MILES TO A CROSSROADS,
 HU1971'THIS IS ABOUT 0.4 MILE BEFORE REACHING THE FIRE TOWER AT THE
 HU1971'STATE LINE.  TURN LEFT AND GO NORTH-NORTHEAST ON A GRAVELED ROAD
 HU1971'FOR 0.4 MILE TO A FENCE CORNER AND A TRACK FIELD ROAD ON THE
 HU1971'RIGHT, EAST SIDE OF THE ROAD.  TURN RIGHT AND GO EAST ALONG THE
 HU1971'NORTH SIDE OF A FENCELINE FOR ABOUT 200.0 FEET TO THE EDGE OF
 HU1971'TIMBER, THENCE TURN LEFT AND GO NORTH ALONG THE WEST SIDE OF
 HU1971'TIMBERLINE FOR ABOUT 0.05 MILE TO THE NORTHWEST CORNER OF
 HU1971'TIMBER, THENCE TURN RIGHT AND GO EAST ALONG THE NORTH SIDE OF
 HU1971'TIMBER FOR 0.15 MILE TO THE SOUTHEAST CORNER OF A CULTIVATED
 HU1971'FIELD AND A FENCE CORNER AND A TRACK TIMBER ROAD.  PASS
 HU1971'THROUGH THE GATE AND CONTINUE EAST ON THE WOODS ROAD FOR 0.15
 HU1971'MILE TO A STANDARD METAL WITNESS POST AND MARKER.
 HU1971'BOUNDARY MONUMENT NO. 24 AND THE STATION.
 HU1971'
 HU1971'THE STATION MARK, A STANDARD DISK STAMPED AND SET IN
 HU1971'TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 2 INCHES
 HU1971'ABOVE THE SURFACE OF THE GROUND.  IT IS 5.5 FEET WEST OF A STANDARD
 HU1971'METAL WITNESS POST AND MARKER.
 HU1971'
 HU1971'REFERENCE MARK 1, A STANDARD DISK STAMPED AND SET
 HU1971'IN TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT 5
 HU1971'INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 63.0 FEET EAST OF
 HU1971'A STANDARD METAL WITNESS POST AND MARKER AND ABOUT THE SAME
 HU1971'ELEVATION AS THE STATION.
 HU1971'
 HU1971'REFERENCE MARK 2, A STANDARD DISK STAMPED AND SET
 HU1971'IN THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT
 HU1971'3 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 51.4 FEET
 HU1971'SOUTH-SOUTHWEST OF A STANDARD METAL WITNESS POST AND MARKER AND
 HU1971'ABOUT THE SAME ELEVATION AS THE STATION.
 HU1971'
 HU1971'REFERENCE MARK 3, A STANDARD DISK STAMPED AND SET IN
 HU1971'THE TOP OF A 10-INCH SQUARE CONCRETE MONUMENT PROJECTING ABOUT
 HU1971'3 INCHES ABOVE THE SURFACE OF THE GROUND.  IT IS 31.1 FEET
 HU1971'SOUTHEAST OF A STANDARD METAL WITNESS POST AND MARKER AND ABOUT
 HU1971'THE SAME ELEVATION AS THE STATION.
 HU1971'
 HU1971'BOUNDARY MONUMENT NO. 24, A 12-INCH SQUARE LIMESTONE MONUMENT
 HU1971'PROJECTING ABOUT 30 INCHES AND LEANS SLIGHTLY TO THE NORTHWEST,
 HU1971'WITH THE LETTER M CUT IN ON ITS WEST SIDE AND P ON ITS EAST SIDE,
 HU1971'A SMALL CROSS WAS INSCRIBED IN ITS TOP AND CENTER FOR TRAVERSE
 HU1971'PURPOSE ON THIS DATE.  IT IS 120.0 FEET SOUTHEAST OF A 24-INCH
 HU1971'DEAD TREE, 90.0 FEET EAST OF A 30-INCH DEAD TREE AND 63.9 FEET
 HU1971'EAST OF A STANDARD METAL WITNESS POST AND MARKER.
 HU1971'
 HU1971'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 HU1971
 HU1971                          STATION RECOVERY (1987)
 HU1971
 HU1971'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 HU1971'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES NOTED BELOW --
 HU1971'THE STATION MARK, REFERENCE MARKS ONE, TWO AND THREE WERE RECOVERED
 HU1971'AND FOUND IN GOOD CONDITION AS DESCRIBED IN THE MOST RECENT
 HU1971'INFORMATION AVAILABLE WITH THE FOLLOWING EXCEPTIONS. THE MARYLAND
 HU1971'DELAWARE BOUNDARY MONUMENT NUMBER 24 WAS FOUND OUT OF POSITION BY
 HU1971'0.3 METERS (1 FT).  IT WAS RESET BACK TO ITS POSITION AS INDICATED
 HU1971'BY THE MOST RECENT INFORMATION AVAILABLE AND AS REQUESTED BY THE TWO
 HU1971'BOUNDARY COMMISSIONS. A SHORTER DISTANCE OF 0.007 METERS OR
 HU1971'0.02 FT WAS NOTED TO REFERENCE MARK ONE. A SHORTER DISTANCE OF
 HU1971'0.007 METERS OR 0.02 FT WAS NOTED TO REFERENCE MARK TWO. A SHORTER
 HU1971'DISTANCE OF 0.036 METERS OR 0.11 FT WAS NOTED TO REFERENCE MARK
 HU1971'THREE. IT APPEARED THAT THE 1962 MEASUREMENTS WERE MADE MARK TO
 HU1971'MARK WHICH WOULD ACCOUNT FOR THE SHORTER DISTANCES OBTAINED AT THIS
 HU1971'DATE.  ALL HORIZONTAL ANGLES WERE WITHIN CLOSE AGREEMENT WITH THE
 HU1971'MOST RECENT INFORMATION AVAILABLE. FOR ADDITIONAL INFORMATION SEE
 HU1971'THE DESCRIPTION FOR STATION BOUNDARY MONUMENT 24 DEL MD.
 HU1971
 HU1971                          STATION RECOVERY (2009)
 HU1971
 HU1971'RECOVERY NOTE BY GEOCACHING 2009 (WD)
 HU1971'THE STATION IS LOCATED IN THICK BRUSH ABOUT 25 FEET WEST OF THE WEST
 HU1971'EDGE OF A LARGE NORTH-SOUTH DRAINAGE DITCH, ABOUT 330 YARDS EAST OF
 HU1971'NOBLE ROAD.  REFERENCE MARK NO. 1 IS 67.9 FEET EAST OF THE STATION,
 HU1971'ABOUT 24 FEET EAST OF THE EAST EDGE OF THE DITCH AND ABOUT 18 FEET
 HU1971'EAST OF BOUNDARY MONUMENT 24 DEL MD.  REFERENCE MARK NO. 2 IS 52.3
 HU1971'FEET SOUTH OF THE STATION AND ABOUT 25 FEET WEST OF THE WEST EDGE OF
 HU1971'THE DITCH.  REFERENCE MARK NO. 3 WAS NOT FOUND AFTER A 20 MINUTE
 HU1971'SEARCH BY A PARTY OF ONE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5232 ***********************************************************************
 JV5232  DESIGNATION -  HUDDLE
 JV5232  PID         -  JV5232
 JV5232  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5232  COUNTRY     -  US
 JV5232  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5232
 JV5232                         *CURRENT SURVEY CONTROL
 JV5232  ______________________________________________________________________
 JV5232* NAD 83(1991) POSITION- 39 04 00.96603(N) 076 28 51.41209(W)   ADJUSTED
 JV5232* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5232  ______________________________________________________________________
 JV5232  GEOID HEIGHT    -        -33.228 (meters)                     GEOID18
 JV5232  LAPLACE CORR    -         -3.12  (seconds)                    DEFLEC18
 JV5232  HORZ ORDER      -  THIRD
 JV5232
 JV5232.The horizontal coordinates were established by classical geodetic methods
 JV5232.and adjusted by the National Geodetic Survey in January 1992.
 JV5232
 JV5232.The orthometric height was scaled from a topographic map.
 JV5232
 JV5232.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5232.GEOID18 height accuracy estimate available here.
 JV5232
 JV5232.Click photographs - Photos may exist for this station.
 JV5232
 JV5232.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5232
 JV5232. The following values were computed from the NAD 83(1991) position.
 JV5232
 JV5232;                    North         East     Units Scale Factor Converg.
 JV5232;SPC MD       -   155,564.430   444,918.985   MT  0.99995539   +0 19 32.8
 JV5232;SPC MD       -   510,380.97  1,459,705.04   sFT  0.99995539   +0 19 32.8
 JV5232;UTM  18      - 4,325,248.126   371,880.077   MT  0.99980212   -0 56 00.5
 JV5232
 JV5232!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5232!SPC MD       -   1.00000525  x   0.99995539  =   0.99996064
 JV5232!UTM  18      -   1.00000525  x   0.99980212  =   0.99980737
 JV5232
 JV5232:                Primary Azimuth Mark                     Grid Az
 JV5232:SPC MD       -  IRON 2                                   017 53 14.4
 JV5232:UTM  18      -  IRON 2                                   019 08 47.7
 JV5232
 JV5232_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7188025248(NAD 83)
 JV5232
 JV5232|---------------------------------------------------------------------|
 JV5232| PID    Reference Object                     Distance      Geod. Az  |
 JV5232|                                                           dddmmss.s |
 JV5232| JV5175 IRON 2                              APPROX. 1.5 KM 0181247.2 |
 JV5232| CA9546 HUDDLE RM                             4.990 METERS 11344     |
 JV5232|---------------------------------------------------------------------|
 JV5232
 JV5232                          SUPERSEDED SURVEY CONTROL
 JV5232
 JV5232  NAD 83(1986)-  39 04 00.96207(N)    076 28 51.42275(W) AD(       ) 3
 JV5232  NAD 27      -  39 04 00.56400(N)    076 28 52.56500(W) AD(       ) 3
 JV5232  USSD        -  39 04 00.91500(N)    076 28 52.39400(W) AD(       ) 3
 JV5232
 JV5232.Superseded values are not recommended for survey control.
 JV5232
 JV5232.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5232.See file dsdata.pdf to determine how the superseded data were derived.
 JV5232
 JV5232
 JV5232  HISTORY     - Date     Condition        Report By
 JV5232  HISTORY     - 1898     MONUMENTED       CGS
 JV5232  HISTORY     - 1906     GOOD             CGS
 JV5232  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5232
 JV5232                          STATION DESCRIPTION
 JV5232
 JV5232'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5232'STATION IS ON THE S SHORE OF MAGOTHY RIVER, ON HUDDLES OR
 JV5232'HUMPHREYS POINT (ULMSTEAD POINT), ABOUT 3/4 MILE NE OF INNER
 JV5232'ENTRANCE TO FORKED CREEK.  STATION IS ABOUT 10 FEET FROM EDGE OF
 JV5232'SANDY BANK 8 FEET HIGH.  STATION MARK IS NAIL IN CEMENT IN TILE
 JV5232'PIPE PROJECTING 1 INCH ABOVE THE GROUND.  REFERENCE MARK IS
 JV5232'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 JV5232'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 JV5232'LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C.
 JV5232'AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 4.99 METERS
 JV5232'(16.37 FEET) FROM STATION IN BEARING S 24 DEG 54 MIN W. DISTANCES
 JV5232'AND BEARINGS FROM THE STATION OF OTHER POINTS OF REFERENCE ARE AS
 JV5232'FOLLOWS--NAIL IN BLAZE IN 3-INCH TREE, 15.86 METERS (52.0 FEET),
 JV5232'S 14 DEG 59 MIN W.  NAIL IN BLAZE IN 14-INCH TREE, 5.86 METERS
 JV5232'(19.22 FEET), N 86 DEG 6 MIN W. HOUSE ON DOBBINS ISLAND, 1-1/4
 JV5232'MILES, N 56 DEG 13 MIN E.  HOUSE ON HILL BACK OF MOUNTAIN POINT,
 JV5232'2-1/2 MILES, N 88 DEG 9 MIN E.
 JV5232
 JV5232                          STATION RECOVERY (1933)
 JV5232
 JV5232'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5232'STATION WAS LOCATED ON HUDDLE OR HUMPHREYS POINT, NOW KNOWN AS
 JV5232'ULMSTEAD POINT, 10 FEET BACK OF THE EDGE OF A SANDY 8-FOOT BLUFF.
 JV5232'THE ENTIRE POINT HAS BEEN WASHED AWAY AND THE BLUFF HAS BECOME A
 JV5232'GENTLE SLOPE.
 JV5232'
 JV5232'NONE OF THE REFERENCE MARKS, OR THE STATION, MARKED BY A NAIL IN
 JV5232'CEMENT IN A TILE PIPE, COULD BE FOUND.  ALL TRACES OF THEM HAVE
 JV5232'BEEN DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5897 ***********************************************************************
 HV5897  DESIGNATION -  HUDSON
 HV5897  PID         -  HV5897
 HV5897  STATE/COUNTY-  MD/DORCHESTER
 HV5897  COUNTRY     -  US
 HV5897  USGS QUAD   -  CHURCH CREEK (2016)
 HV5897
 HV5897                         *CURRENT SURVEY CONTROL
 HV5897  ______________________________________________________________________
 HV5897* NAD 83(1991) POSITION- 38 32 20.37551(N) 076 14 56.54893(W)   ADJUSTED
 HV5897* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV5897  ______________________________________________________________________
 HV5897  GEOID HEIGHT    -        -34.683 (meters)                     GEOID18
 HV5897  LAPLACE CORR    -         -5.46  (seconds)                    DEFLEC18
 HV5897  HORZ ORDER      -  THIRD
 HV5897
 HV5897.The horizontal coordinates were established by classical geodetic methods
 HV5897.and adjusted by the National Geodetic Survey in January 1992.
 HV5897
 HV5897.The orthometric height was scaled from a topographic map.
 HV5897
 HV5897.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5897.GEOID18 height accuracy estimate available here.
 HV5897
 HV5897.Click photographs - Photos may exist for this station.
 HV5897
 HV5897.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5897
 HV5897. The following values were computed from the NAD 83(1991) position.
 HV5897
 HV5897;                    North         East     Units Scale Factor Converg.
 HV5897;SPC MD       -    97,100.969   465,469.970   MT  0.99996703   +0 28 16.8
 HV5897;SPC MD       -   318,572.10  1,527,129.39   sFT  0.99996703   +0 28 16.8
 HV5897;UTM  18      - 4,266,359.520   391,143.042   MT  0.99974593   -0 46 41.8
 HV5897
 HV5897!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5897!SPC MD       -   1.00000548  x   0.99996703  =   0.99997251
 HV5897!UTM  18      -   1.00000548  x   0.99974593  =   0.99975141
 HV5897
 HV5897:                Primary Azimuth Mark                     Grid Az
 HV5897:SPC MD       -  JENIFER MSFC 1910                        357 51 13.8
 HV5897:UTM  18      -  JENIFER MSFC 1910                        359 06 12.4
 HV5897
 HV5897_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9114366359(NAD 83)
 HV5897
 HV5897|---------------------------------------------------------------------|
 HV5897| PID    Reference Object                     Distance      Geod. Az  |
 HV5897|                                                           dddmmss.s |
 HV5897| CX2910 HUDSON RM                            29.650 METERS 35131     |
 HV5897| HV5894 JENIFER MSFC 1910                   APPROX. 1.2 KM 3581930.6 |
 HV5897|---------------------------------------------------------------------|
 HV5897
 HV5897                          SUPERSEDED SURVEY CONTROL
 HV5897
 HV5897  NAD 83(1986)-  38 32 20.37330(N)    076 14 56.56446(W) AD(       ) 3
 HV5897  NAD 27      -  38 32 19.96100(N)    076 14 57.74900(W) AD(       ) 3
 HV5897  USSD        -  38 32 20.34100(N)    076 14 57.54100(W) AD(       ) 3
 HV5897
 HV5897.Superseded values are not recommended for survey control.
 HV5897
 HV5897.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5897.See file dsdata.pdf to determine how the superseded data were derived.
 HV5897
 HV5897
 HV5897  HISTORY     - Date     Condition        Report By
 HV5897  HISTORY     - 1901     MONUMENTED       CGS
 HV5897  HISTORY     - 1910     GOOD             CGS
 HV5897
 HV5897                          STATION DESCRIPTION
 HV5897
 HV5897'DESCRIBED BY COAST AND GEODETIC SURVEY 1910
 HV5897'ON THE NORTHERN SHORE OF LITTLE CHOPTANK RIVER, ON CASONS POINT,
 HV5897'ABOUT 1 MILE N OF SUSQUEHANNA POINT, AND 1-1/2 MILES ENE OF RAGGED
 HV5897'POINT, ON A SAND BEACH ABOUT LEVEL WITH HIGH WATER, 2 YARDS S OF
 HV5897'RAIL FENCE EXTENDING ALONG SHORE, AND 130 YARDS WNW OF END OF
 HV5897'WOODS AT SHORE.  IT IS 460 METERS, NW BY W, FROM POINT AT HUDSON
 HV5897'CREEK, AND 630 METERS ESE FROM POINT ON E SIDE OF BROOK CREEK.
 HV5897'STATION MARK IS CENTER OF 4-INCH TILE PIPE SET IN CEMENT AND
 HV5897'PROJECTING 3 INCHES ABOVE SURFACE OF CEMENT AND 6 INCHES ABOVE
 HV5897'SURFACE OF GROUND.  ONE REFERENCE MARK IS A 4-INCH TILE SET IN
 HV5897'CEMENT AND PROJECTING 4 INCHES ABOVE THE GROUND.  IT IS 3.99
 HV5897'METERS (13.09 FEET) FROM THE STATION N 7 DEG 15 MIN W.  ANOTHER
 HV5897'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV5897'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV5897'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE
 HV5897'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV5897'IT IS 29.65 METERS (97.3 FEET) FROM STATION N 8 DEG 29 MIN W.
 HV5897'OTHER DISTANCES AND BEARINGS ARE AS FOLLOWS--NEAR PEAK OF BARN,
 HV5897'3-1/2 MILES, S 31 DEG 49 MIN W. LEFT CHIMNEY OF HOUSE ON HOOPER
 HV5897'POINT, 3-1/8 MILES, S 41 DEG 20 MIN W.  RIGHT CHIMNEY OF HOUSE,
 HV5897'1/4 MILE, N 33 DEG 51 MIN W. NEAR PEAK OF BARN, 1/2 MILE, N 11
 HV5897'DEG 20 MIN W.  NEAR PEAK OF HOUSE, 3/4 MILE, N 8 DEG 50 MIN W.
 HV5897'LEFT CHIMNEY OF 1 1/2-STORY HOUSE, 1-1/4 MILES, N 11 DEG 43 MIN E.
 HV5897'NEAR PEAK OF BARN, 1-1/8 MILES, N 29 DEG 4 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5901 ***********************************************************************
 HV5901  DESIGNATION -  HUGH MSFC 1910
 HV5901  PID         -  HV5901
 HV5901  STATE/COUNTY-  MD/DORCHESTER
 HV5901  COUNTRY     -  US
 HV5901  USGS QUAD   -  CHURCH CREEK (2016)
 HV5901
 HV5901                         *CURRENT SURVEY CONTROL
 HV5901  ______________________________________________________________________
 HV5901* NAD 83(1991) POSITION- 38 32 14.72803(N) 076 12 27.11861(W)   ADJUSTED
 HV5901* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5901  ______________________________________________________________________
 HV5901  GEOID HEIGHT    -        -34.806 (meters)                     GEOID18
 HV5901  LAPLACE CORR    -         -5.28  (seconds)                    DEFLEC18
 HV5901  HORZ ORDER      -  THIRD
 HV5901
 HV5901.The horizontal coordinates were established by classical geodetic methods
 HV5901.and adjusted by the National Geodetic Survey in January 1992.
 HV5901
 HV5901.The orthometric height was scaled from a topographic map.
 HV5901
 HV5901.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5901.GEOID18 height accuracy estimate available here.
 HV5901
 HV5901.Click photographs - Photos may exist for this station.
 HV5901
 HV5901.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5901
 HV5901. The following values were computed from the NAD 83(1991) position.
 HV5901
 HV5901;                    North         East     Units Scale Factor Converg.
 HV5901;SPC MD       -    96,957.432   469,090.174   MT  0.99996719   +0 29 50.6
 HV5901;SPC MD       -   318,101.17  1,539,006.68   sFT  0.99996719   +0 29 50.6
 HV5901;UTM  18      - 4,266,137.112   394,758.438   MT  0.99973639   -0 45 08.6
 HV5901
 HV5901!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5901!SPC MD       -   1.00000534  x   0.99996719  =   0.99997253
 HV5901!UTM  18      -   1.00000534  x   0.99973639  =   0.99974173
 HV5901
 HV5901:                Primary Azimuth Mark                     Grid Az
 HV5901:SPC MD       -  ETTA MSFC 1910                           115 20 59.4
 HV5901:UTM  18      -  ETTA MSFC 1910                           116 35 58.6
 HV5901
 HV5901_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9475866137(NAD 83)
 HV5901
 HV5901|---------------------------------------------------------------------|
 HV5901| PID    Reference Object                     Distance      Geod. Az  |
 HV5901|                                                           dddmmss.s |
 HV5901| HV5942 ETTA MSFC 1910                      APPROX. 0.9 KM 1155050.0 |
 HV5901|---------------------------------------------------------------------|
 HV5901
 HV5901                          SUPERSEDED SURVEY CONTROL
 HV5901
 HV5901  NAD 83(1986)-  38 32 14.72567(N)    076 12 27.13420(W) AD(       ) 3
 HV5901  NAD 27      -  38 32 14.31700(N)    076 12 28.32000(W) AD(       ) 3
 HV5901  USSD        -  38 32 14.70200(N)    076 12 28.09700(W) AD(       ) 3
 HV5901
 HV5901.Superseded values are not recommended for survey control.
 HV5901
 HV5901.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5901.See file dsdata.pdf to determine how the superseded data were derived.
 HV5901
 HV5901_MARKER: Z = SEE DESCRIPTION
 HV5901_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5901_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5901+STABILITY: SURFACE MOTION
 HV5901
 HV5901  HISTORY     - Date     Condition        Report By
 HV5901  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5901
 HV5901                          STATION DESCRIPTION
 HV5901
 HV5901'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5901'ON THE EASTERN SHORE OF FISHING CREEK, ABOUT 3/4 MILE SE OF TOWN
 HV5901'POINT, AND 3/4 MILE NW OF WINDMILL POINT, ON HIGH MARSH ABOUT 2
 HV5901'FEET ABOVE HIGH WATER, 12 YARDS NE OF SHORE, 13 YARDS SE OF SHORE,
 HV5901'AND 17 YARDS E OF EXTREME END OF POINT.  STATION IS MARKED BY A
 HV5901'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HV5901'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HV5901'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HV5901'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST. SUB-SURFACE MARK IS THE
 HV5901'CENTER OF A 2-INCH DRAIN TILE PIPE BURIED WITH THE TOP 2 INCHES
 HV5901'BELOW THE BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO VARIOUS
 HV5901'POINTS OF REFERENCE ARE AS FOLLOWS--NEAR PEAK OF BARN, 5/8 MILE,
 HV5901'S 72 DEG 19 MIN W.  NEAR CHIMNEY OF HOUSE, 1/2 MILE, S 74 DEG 25
 HV5901'MIN W.  TANGENT OF MCKEILS POINT, 1/2 MILE, N 75 DEG 23 MIN W.
 HV5901'NEAR PEAK OF BARN, 2-1/2 MILES, N 68 DEG 52 MIN W.  NEAR PEAK OF
 HV5901'BARN, 1-5/8 MILES, N 58 DEG 17 MIN W.  LEFT CHIMNEY OF HOUSE,
 HV5901'1-5/8 MILES, N 55 DEG 44 MIN W.  MIDDLE CHIMNEY OF HOUSE, 1-1/2
 HV5901'MILES, N 38 DEG 23 MIN W. LEFT CHIMNEY OF HOUSE, 1/2 MILE, N 8 DEG
 HV5901'4 MIN W.  NAIL IN BLAZE IN TWIN DEAD CEDAR TREE, 13.64 METERS
 HV5901'(44.8 FEET), N 7 DEG 53 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6343 ***********************************************************************
 JV6343  DESIGNATION -  HUGHES
 JV6343  PID         -  JV6343
 JV6343  STATE/COUNTY-  MD/HARFORD
 JV6343  COUNTRY     -  US
 JV6343  USGS QUAD   -  CONOWINGO DAM (2016)
 JV6343
 JV6343                         *CURRENT SURVEY CONTROL
 JV6343  ______________________________________________________________________
 JV6343* NAD 83(2011) POSITION- 39 38 51.30091(N) 076 14 48.87840(W)   ADJUSTED
 JV6343* NAD 83(2011) ELLIP HT-    98.208 (meters)        (06/27/12)   ADJUSTED
 JV6343* NAD 83(2011) EPOCH   -  2010.00
 JV6343* NAVD 88 ORTHO HEIGHT -   131.026 (meters)      429.87  (feet) ADJUSTED
 JV6343  ______________________________________________________________________
 JV6343  GEOID HEIGHT    -        -32.816 (meters)                     GEOID18
 JV6343  NAD 83(2011) X  -  1,169,159.386 (meters)                     COMP
 JV6343  NAD 83(2011) Y  - -4,776,844.439 (meters)                     COMP
 JV6343  NAD 83(2011) Z  -  4,047,996.340 (meters)                     COMP
 JV6343  LAPLACE CORR    -         -1.89  (seconds)                    DEFLEC18
 JV6343  DYNAMIC HEIGHT  -        130.962 (meters)      429.66  (feet) COMP
 JV6343  MODELED GRAVITY -    980,135.4   (mgal)                       NAVD 88
 JV6343
 JV6343  VERT ORDER      -  FIRST     CLASS II
 JV6343
 JV6343  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6343  Standards:
 JV6343         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6343            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6343  -------------------------------------------------------------------
 JV6343  NETWORK    1.18   2.92           0.51   0.43   1.49      0.37124480
 JV6343  -------------------------------------------------------------------
 JV6343  Click here for local accuracies and other accuracy information.
 JV6343
 JV6343.The horizontal coordinates were established by GPS observations
 JV6343.and adjusted by the National Geodetic Survey in June 2012.
 JV6343
 JV6343.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6343.been affixed to the stable North American tectonic plate. See 
 JV6343.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6343
 JV6343.The horizontal coordinates are valid at the epoch date displayed above
 JV6343.which is a decimal equivalence of Year/Month/Day.
 JV6343
 JV6343.The orthometric height was determined by differential leveling and
 JV6343.adjusted by the NATIONAL GEODETIC SURVEY
 JV6343.in June 1991.
 JV6343
 JV6343.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6343.GEOID18 height accuracy estimate available here.
 JV6343
 JV6343.Click photographs - Photos may exist for this station.
 JV6343
 JV6343.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6343
 JV6343.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6343
 JV6343.The ellipsoidal height was determined by GPS observations
 JV6343.and is referenced to NAD 83.
 JV6343
 JV6343.The dynamic height is computed by dividing the NAVD 88
 JV6343.geopotential number by the normal gravity value computed on the
 JV6343.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6343.degrees latitude (g = 980.6199 gals.).
 JV6343
 JV6343.The modeled gravity was interpolated from observed gravity values.
 JV6343
 JV6343. The following values were computed from the NAD 83(2011) position.
 JV6343
 JV6343;                    North         East     Units Scale Factor Converg.
 JV6343;SPC MD       -   220,167.619   464,640.469   MT  1.00004054   +0 28 21.6
 JV6343;SPC MD       -   722,333.26  1,524,407.94   sFT  1.00004054   +0 28 21.6
 JV6343;UTM  18      - 4,389,386.480   393,017.349   MT  0.99974091   -0 47 44.5
 JV6343
 JV6343!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6343!SPC MD       -   0.99998459  x   1.00004054  =   1.00002513
 JV6343!UTM  18      -   0.99998459  x   0.99974091  =   0.99972551
 JV6343
 JV6343:                Primary Azimuth Mark                     Grid Az
 JV6343:SPC MD       -  HUGHES AZ MK                             231 34 14.6
 JV6343:UTM  18      -  HUGHES AZ MK                             232 50 20.7
 JV6343
 JV6343_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9301789386(NAD 83)
 JV6343
 JV6343|---------------------------------------------------------------------|
 JV6343| PID    Reference Object                     Distance      Geod. Az  |
 JV6343|                                                           dddmmss.s |
 JV6343| JV6344 HUGHES AZ MK                        467.446 METERS 2320236.2 |
 JV6343|---------------------------------------------------------------------|
 JV6343
 JV6343                          SUPERSEDED SURVEY CONTROL
 JV6343
 JV6343  NAD 83(2007)-  39 38 51.30111(N)    076 14 48.87904(W) AD(2002.00) 0
 JV6343  ELLIP H (02/10/07)   98.227  (m)                       GP(2002.00)    
 JV6343  ELLIP H (09/18/02)   98.254  (m)                       GP(       ) 4 2
 JV6343  NAD 83(1991)-  39 38 51.30070(N)    076 14 48.87916(W) AD(       ) 1
 JV6343  ELLIP H (01/27/92)   98.241  (m)                       GP(       ) 4 1
 JV6343  NAD 83(1986)-  39 38 51.29387(N)    076 14 48.88537(W) AD(       ) 1
 JV6343  NGVD 29             131.28   (m)          430.7    (f) LEVELING    3  
 JV6343
 JV6343.Superseded values are not recommended for survey control.
 JV6343
 JV6343.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6343.See file dsdata.pdf to determine how the superseded data were derived.
 JV6343
 JV6343_MARKER: DD = SURVEY DISK
 JV6343_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6343_STAMPING: 89 HUGHES 1989
 JV6343_MARK LOGO: MD-025
 JV6343_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6343_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6343+STABILITY: SURFACE MOTION
 JV6343_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6343+SATELLITE: SATELLITE OBSERVATIONS - June 17, 2005
 JV6343
 JV6343  HISTORY     - Date     Condition        Report By
 JV6343  HISTORY     - 1989     MONUMENTED       RDA
 JV6343  HISTORY     - 20010304 GOOD             USPSQD
 JV6343  HISTORY     - 20050617 GOOD             GEOCAC
 JV6343
 JV6343                          STATION DESCRIPTION
 JV6343
 JV6343'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6343'THE STATION IS LOCATED IN NORTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6343'2 MILES WEST OF THE VILLAGE OF DARLINGTON.  TO REACH THE STATION FROM
 JV6343'THE INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 136 IN POPLAR
 JV6343'GROVE PROCEED NORTHEAST ALONG HIGHWAY 1 1.25 MILES TO ITS
 JV6343'INTERSECTION WITH HIGHES ROAD AND THE STATION ON THE LEFT ON THE WEST
 JV6343'SIDE OF THE INTERSECTION.  THE STATION IS A STANDARD HARFORD COUNTY
 JV6343'STATION DISC SET IN CONCRETE ABOUT 1 INCH BELOW GROUND STAMPED 89
 JV6343'HUGHES 1989.  THE STATION IS 13.2 FEET EAST OF C AND P TELEPHONE
 JV6343'STAND, 30.0 FEET WEST OF THE CENTERLINE OF HUGHES ROAD, AND 30.0 FEET
 JV6343'NORTHWEST OF THE CENTERLINE OF HIGHWAY 1.
 JV6343
 JV6343                          STATION RECOVERY (2001)
 JV6343
 JV6343'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV6343'CHANGE PART OF DESCRIPTION TO READ - STATION IS 21 FEET EAST OF POWER
 JV6343'POLE NUMBER 1447.
 JV6343
 JV6343                          STATION RECOVERY (2005)
 JV6343
 JV6343'RECOVERY NOTE BY GEOCACHING 2005 (WD)
 JV6343'THE STATION IS FLUSH WITH THE SURFACE IN THE WEST ANGLE OF THE
 JV6343'INTERSECTION OF US HIGHWAY 1 AND HUGHES ROAD, IN A GRASSY PLOT
 JV6343'IMMDIATELY EAST OF THE PAVED AREA AROUND A CITGO SERVICE STATION.  THE
 JV6343'STATION IS 21.25 FEET EAST-NORTHEAST OF POWER POLE 1447 28927
 JV6343'40008, 33.0 FEET WEST-SOUTHWEST OF THE CENTERLINE OF HUGHES ROAD, 29.5
 JV6343'FEET, NORTH-NORTHWEST OF THE CENTERLINE OF US HIGHWAY 1, 15.75 FEET
 JV6343'SOUTHEAST OF THE CURB AT THE SOUTHEAST EDGE OF THE PAVED AREA AROUND
 JV6343'THE SERVICE STATION, AND 5.25 FEET NORTHWEST OF THE CURVED CURB AT THE
 JV6343'MOST NORTHWESTERLY POINT OF THE INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6344 ***********************************************************************
 JV6344  DESIGNATION -  HUGHES AZ MK
 JV6344  PID         -  JV6344
 JV6344  STATE/COUNTY-  MD/HARFORD
 JV6344  COUNTRY     -  US
 JV6344  USGS QUAD   -  DELTA (2019)
 JV6344
 JV6344                         *CURRENT SURVEY CONTROL
 JV6344  ______________________________________________________________________
 JV6344* NAD 83(2011) POSITION- 39 38 41.97833(N) 076 15 04.33668(W)   NO CHECK
 JV6344* NAD 83(2011) ELLIP HT-    95.902 (meters)        (06/27/12)   NO CHECK
 JV6344* NAD 83(2011) EPOCH   -  2010.00
 JV6344* NAVD 88 ORTHO HEIGHT -   128.725 (meters)      422.33  (feet) ADJUSTED
 JV6344  ______________________________________________________________________
 JV6344  GEOID HEIGHT    -        -32.811 (meters)                     GEOID18
 JV6344  NAD 83(2011) X  -  1,168,844.566 (meters)                     COMP
 JV6344  NAD 83(2011) Y  - -4,777,108.519 (meters)                     COMP
 JV6344  NAD 83(2011) Z  -  4,047,773.477 (meters)                     COMP
 JV6344  LAPLACE CORR    -         -1.94  (seconds)                    DEFLEC18
 JV6344  DYNAMIC HEIGHT  -        128.662 (meters)      422.12  (feet) COMP
 JV6344  MODELED GRAVITY -    980,134.6   (mgal)                       NAVD 88
 JV6344
 JV6344  VERT ORDER      -  FIRST     CLASS II
 JV6344
 JV6344  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6344  Standards:
 JV6344         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6344            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6344  -------------------------------------------------------------------
 JV6344  NETWORK    1.47   3.82           0.59   0.57   1.95      0.49052196
 JV6344  -------------------------------------------------------------------
 JV6344  Click here for local accuracies and other accuracy information.
 JV6344
 JV6344.The horizontal coordinates were established by GPS observations
 JV6344.and adjusted by the National Geodetic Survey in June 2012.
 JV6344
 JV6344.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6344.been affixed to the stable North American tectonic plate. See 
 JV6344.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6344
 JV6344.The horizontal coordinates are valid at the epoch date displayed above
 JV6344.which is a decimal equivalence of Year/Month/Day.
 JV6344
 JV6344.No horizontal observational check was made to the station.
 JV6344
 JV6344.The orthometric height was determined by differential leveling and
 JV6344.adjusted by the NATIONAL GEODETIC SURVEY
 JV6344.in June 1991.
 JV6344
 JV6344.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6344.GEOID18 height accuracy estimate available here.
 JV6344
 JV6344.Click photographs - Photos may exist for this station.
 JV6344
 JV6344.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6344
 JV6344.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6344
 JV6344.The ellipsoidal height was determined by GPS observations
 JV6344.and is referenced to NAD 83.
 JV6344
 JV6344.The dynamic height is computed by dividing the NAVD 88
 JV6344.geopotential number by the normal gravity value computed on the
 JV6344.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6344.degrees latitude (g = 980.6199 gals.).
 JV6344
 JV6344.The modeled gravity was interpolated from observed gravity values.
 JV6344
 JV6344. The following values were computed from the NAD 83(2011) position.
 JV6344
 JV6344;                    North         East     Units Scale Factor Converg.
 JV6344;SPC MD       -   219,877.067   464,274.268   MT  1.00003993   +0 28 11.9
 JV6344;SPC MD       -   721,380.01  1,523,206.49   sFT  1.00003993   +0 28 11.9
 JV6344;UTM  18      - 4,389,104.190   392,644.918   MT  0.99974189   -0 47 54.2
 JV6344
 JV6344!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6344!SPC MD       -   0.99998495  x   1.00003993  =   1.00002488
 JV6344!UTM  18      -   0.99998495  x   0.99974189  =   0.99972685
 JV6344
 JV6344:                Primary Azimuth Mark                     Grid Az
 JV6344:SPC MD       -  HUGHES                                   051 34 14.4
 JV6344:UTM  18      -  HUGHES                                   052 50 20.5
 JV6344
 JV6344_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9264489104(NAD 83)
 JV6344
 JV6344|---------------------------------------------------------------------|
 JV6344| PID    Reference Object                     Distance      Geod. Az  |
 JV6344|                                                           dddmmss.s |
 JV6344| JV6343 HUGHES                              467.446 METERS 0520226.3 |
 JV6344|---------------------------------------------------------------------|
 JV6344
 JV6344                          SUPERSEDED SURVEY CONTROL
 JV6344
 JV6344  NAD 83(2007)-  39 38 41.97855(N)    076 15 04.33721(W) AD(2002.00) 0
 JV6344  ELLIP H (02/10/07)   95.924  (m)                       GP(2002.00)    
 JV6344  ELLIP H (09/18/02)   95.954  (m)                       GP(       ) 4 2
 JV6344  NAD 83(1991)-  39 38 41.97817(N)    076 15 04.33730(W) AD(       ) 1
 JV6344  ELLIP H (01/27/92)   95.940  (m)                       GP(       ) 4 1
 JV6344  NAD 83(1986)-  39 38 41.97134(N)    076 15 04.34352(W) AD(       ) 1
 JV6344  NGVD 29             128.98   (m)          423.2    (f) LEVELING    3  
 JV6344
 JV6344.Superseded values are not recommended for survey control.
 JV6344
 JV6344.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6344.See file dsdata.pdf to determine how the superseded data were derived.
 JV6344
 JV6344_MARKER: DZ = AZIMUTH MARK DISK
 JV6344_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6344_STAMPING: 89 HUGHES 1989
 JV6344_MARK LOGO: MD-025
 JV6344_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6344_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6344+STABILITY: SURFACE MOTION
 JV6344_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6344+SATELLITE: SATELLITE OBSERVATIONS - March 04, 2001
 JV6344
 JV6344  HISTORY     - Date     Condition        Report By
 JV6344  HISTORY     - 1989     MONUMENTED       RDA
 JV6344  HISTORY     - 19900105 GOOD
 JV6344  HISTORY     - 20010304 GOOD             USPSQD
 JV6344
 JV6344                          STATION DESCRIPTION
 JV6344
 JV6344'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6344'THE STATION IS LOCATED IN NORTHEASTERN HARFORD COUNTY, MARYLAND ABOUT
 JV6344'2 MILES WEST OF THE VILLAGE OF DARLINGTON.  TO REACH THE STATION FROM
 JV6344'THE INTERSECTION OF FEDERAL HIGHWAY 1 AND STATE HIGHWAY 136 IN POPLAR
 JV6344'GROVE PROCEED NORTHEAST ALONG HIGHWAY 1 1.25 MILES TO ITS
 JV6344'INTERSECTION WITH HIGHES ROAD AND THE STATION ON THE LEFT ON THE WEST
 JV6344'SIDE OF THE INTERSECTION.  TO REACH THE AZIMUTH MARK FROM THE STATION
 JV6344'PROCEED SOUTHWEST ALONG HIGHWAY 1 0.27 MILES TO THE MARK ON THE LEFT.
 JV6344'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISC SET IN CONCRETE
 JV6344'ABOUT 1 INCH BELOW GROUND STAMPED 89 HUGHES 1989.  THE MARK IS 3.4
 JV6344'FEET NORTHEAST OF C AND P OF MARYLAND POLE NUMBER 28, 30.1 FEET
 JV6344'SOUTHEAST OF THE CENTERLINE OF HIGHWAY 1, AND 78.0 FEET NORTHEAST OF
 JV6344'A 24 INCH SPRUCE TREE.
 JV6344
 JV6344                          STATION RECOVERY (1990)
 JV6344
 JV6344'RECOVERED 1990
 JV6344'RECOVERED IN GOOD CONDITION.
 JV6344
 JV6344                          STATION RECOVERY (2001)
 JV6344
 JV6344'RECOVERY NOTE BY US POWER SQUADRON 2001 (DG)
 JV6344'WITNESS POST DESTROYED.  REMOVE DESCRIPTION OF 78 FEET NORTHEAST OF 1
 JV6344'24 INCH SPRUCE TREE.  THERE IS NO SPRUCE TREE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9410 ***********************************************************************
 DR9410  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9410  DESIGNATION -  HUMPHREY
 DR9410  PID         -  DR9410
 DR9410  STATE/COUNTY-  MD/KENT
 DR9410  COUNTRY     -  US
 DR9410  USGS QUAD   -  ROCK HALL (2016)
 DR9410
 DR9410                         *CURRENT SURVEY CONTROL
 DR9410  ______________________________________________________________________
 DR9410* NAD 83(2011) POSITION- 39 09 38.89865(N) 076 14 40.36237(W)   ADJUSTED
 DR9410* NAD 83(2011) ELLIP HT-   -30.709 (meters)        (09/18/23)   ADJUSTED
 DR9410* NAD 83(2011) EPOCH   -  2010.00
 DR9410* NAVD 88 ORTHO HEIGHT -     2.59  (meters)        8.5   (feet) GPS OBS
 DR9410  ______________________________________________________________________
 DR9410  GEOID HEIGHT    -        -33.308 (meters)                     GEOID18
 DR9410  NAD 83(2011) X  -  1,177,490.223 (meters)                     COMP
 DR9410  NAD 83(2011) Y  - -4,810,021.808 (meters)                     COMP
 DR9410  NAD 83(2011) Z  -  4,006,155.542 (meters)                     COMP
 DR9410  LAPLACE CORR    -         -2.05  (seconds)                    DEFLEC18
 DR9410
 DR9410  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9410  Standards:
 DR9410         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9410            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9410  -------------------------------------------------------------------
 DR9410  NETWORK    0.73   1.76           0.31   0.28   0.90     -0.21128245
 DR9410  -------------------------------------------------------------------
 DR9410  Click here for local accuracies and other accuracy information.
 DR9410
 DR9410.The horizontal coordinates were established by GPS observations
 DR9410.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9410
 DR9410.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9410.been affixed to the stable North American tectonic plate. See 
 DR9410.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9410
 DR9410.The horizontal coordinates are valid at the epoch date displayed above
 DR9410.which is a decimal equivalence of Year/Month/Day.
 DR9410
 DR9410.The orthometric height was determined by GPS observations and a
 DR9410.high-resolution geoid model using precise GPS observation and
 DR9410.processing techniques.
 DR9410
 DR9410.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9410.GEOID18 height accuracy estimate available here.
 DR9410
 DR9410.Click photographs - Photos may exist for this station.
 DR9410
 DR9410.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9410
 DR9410.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9410
 DR9410.The ellipsoidal height was determined by GPS observations
 DR9410.and is referenced to NAD 83.
 DR9410
 DR9410. The following values were computed from the NAD 83(2011) position.
 DR9410
 DR9410;                    North         East     Units Scale Factor Converg.
 DR9410;SPC MD       -   166,127.701   465,290.739   MT  0.99996219   +0 28 26.9
 DR9410;SPC MD       -   545,037.30  1,526,541.37   sFT  0.99996219   +0 28 26.9
 DR9410;UTM  18      - 4,335,359.079   392,475.284   MT  0.99974236   -0 47 09.6
 DR9410
 DR9410!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9410!SPC MD       -   1.00000482  x   0.99996219  =   0.99996701
 DR9410!UTM  18      -   1.00000482  x   0.99974236  =   0.99974718
 DR9410
 DR9410_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9247535359(NAD 83)
 DR9410
 DR9410                          SUPERSEDED SURVEY CONTROL
 DR9410
 DR9410.No superseded survey control is available for this station.
 DR9410
 DR9410_MARKER: DD = SURVEY DISK
 DR9410_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9410_STAMPING: HUMPHREY 2021
 DR9410_MARK LOGO: MD-029
 DR9410_PROJECTION: FLUSH
 DR9410_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9410_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9410+STABILITY: SURFACE MOTION
 DR9410_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9410+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9410
 DR9410  HISTORY     - Date     Condition        Report By
 DR9410  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9410  HISTORY     - 20250415 GOOD             PROFLN
 DR9410
 DR9410                          STATION DESCRIPTION
 DR9410
 DR9410'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9410'THE MARK IS LOCATED ABOUT 10.1 MI (16.3 KM) WEST-SOUTHWEST OF
 DR9410'CHESTERTOWN, 9.6 MI (15.4 KM) NORTH-NORTHEAST OF LOVE POINT, 5.7 MI
 DR9410'(9.2 KM) SOUTHWEST OF FAIRLEE AND 1.6 MI (2.6 KM) NORTH-NORTHWEST OF
 DR9410'ROCK HALL.
 DR9410'
 DR9410'TO REACH MARK FROM THE JUNCTION OF MD 20 W, GO WEST-NORTHWEST ON MD 20
 DR9410'W FOR 6.60 MI (10.62 KM) TO AN INTERSECTION.  TURN RIGHT AND GO WEST
 DR9410'ON REESES CORNER ROAD FOR 2.10 MI (3.38 KM) TO AN INTERSECTION.  TURN
 DR9410'LEFT AND GO SOUTH ON SHARP LEFT ONTO MD 445 S FOR 1.62 MI (2.61 KM) TO
 DR9410'THE MARK ON THE RIGHT.
 DR9410'
 DR9410'THE MARK IS 173.8 FT (53.0 M) SOUTHWEST OF A UTILITY POLE NUMBERED DPL
 DR9410'28767-22295, 148.0 FT (45.1 M) NORTH OF A UTILITY POLE NUMBERED DPL
 DR9410'28757-22269, 63.9 FT (19.5 M) WEST OF A UTILITY POLE NUMBERED DPL
 DR9410'28760-22281, 23.8 FT (7.3 M) NORTHWEST OF THE CENTERLINE OF STATE
 DR9410'ROUTE MD445 SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST AND
 DR9410'ABOUT 0.1 FT (3 CM) LOWER THAN THE GROUND.
 DR9410
 DR9410                          STATION RECOVERY (2025)
 DR9410
 DR9410'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9410'THE MARK IS 176 FT (53.6 M) NORTHERLY FROM A CONCRETE CULVERT PIPE
 DR9410'WITH NO HEADWALL, 14 FT (4.3 M) SOUTHERLY FROM A LINE RADIAL TO THE
 DR9410'HIGHWAY CURVE THROUGH THE MIDDLE OF THE 3 POLES REFERENCED
 DR9410'(28760-22281), 4.5 FT (1.4 M) WESTERLY OF THE WEST EDGE OF PAVEMENT
 DR9410'AND ABOUT 1 FT (0.3 M) BELOW IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DR9411 ***********************************************************************
 DR9411  HT_MOD      -  This is a Height Modernization Survey Station.
 DR9411  DESIGNATION -  HUMPHREY AZ MK
 DR9411  PID         -  DR9411
 DR9411  STATE/COUNTY-  MD/KENT
 DR9411  COUNTRY     -  US
 DR9411  USGS QUAD   -  ROCK HALL (2016)
 DR9411
 DR9411                         *CURRENT SURVEY CONTROL
 DR9411  ______________________________________________________________________
 DR9411* NAD 83(2011) POSITION- 39 09 48.07721(N) 076 14 31.82350(W)   ADJUSTED
 DR9411* NAD 83(2011) ELLIP HT-   -30.155 (meters)        (09/18/23)   ADJUSTED
 DR9411* NAD 83(2011) EPOCH   -  2010.00
 DR9411* NAVD 88 ORTHO HEIGHT -     3.14  (meters)       10.3   (feet) GPS OBS
 DR9411  ______________________________________________________________________
 DR9411  GEOID HEIGHT    -        -33.306 (meters)                     GEOID18
 DR9411  NAD 83(2011) X  -  1,177,646.937 (meters)                     COMP
 DR9411  NAD 83(2011) Y  - -4,809,799.853 (meters)                     COMP
 DR9411  NAD 83(2011) Z  -  4,006,375.360 (meters)                     COMP
 DR9411  LAPLACE CORR    -         -2.06  (seconds)                    DEFLEC18
 DR9411
 DR9411  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DR9411  Standards:
 DR9411         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DR9411            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DR9411  -------------------------------------------------------------------
 DR9411  NETWORK    0.74   1.76           0.32   0.28   0.90     -0.21895462
 DR9411  -------------------------------------------------------------------
 DR9411  Click here for local accuracies and other accuracy information.
 DR9411
 DR9411.The horizontal coordinates were established by GPS observations
 DR9411.and adjusted by the MD DEPT OF TRANSP in September 2023.
 DR9411
 DR9411.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DR9411.been affixed to the stable North American tectonic plate. See 
 DR9411.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DR9411
 DR9411.The horizontal coordinates are valid at the epoch date displayed above
 DR9411.which is a decimal equivalence of Year/Month/Day.
 DR9411
 DR9411.The orthometric height was determined by GPS observations and a
 DR9411.high-resolution geoid model using precise GPS observation and
 DR9411.processing techniques.
 DR9411
 DR9411.Significant digits in the geoid height do not necessarily reflect accuracy.
 DR9411.GEOID18 height accuracy estimate available here.
 DR9411
 DR9411.Click photographs - Photos may exist for this station.
 DR9411
 DR9411.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DR9411
 DR9411.The Laplace correction was computed from DEFLEC18 derived deflections.
 DR9411
 DR9411.The ellipsoidal height was determined by GPS observations
 DR9411.and is referenced to NAD 83.
 DR9411
 DR9411. The following values were computed from the NAD 83(2011) position.
 DR9411
 DR9411;                    North         East     Units Scale Factor Converg.
 DR9411;SPC MD       -   166,412.432   465,493.378   MT  0.99996241   +0 28 32.3
 DR9411;SPC MD       -   545,971.45  1,527,206.19   sFT  0.99996241   +0 28 32.3
 DR9411;UTM  18      - 4,335,639.223   392,684.091   MT  0.99974180   -0 47 04.4
 DR9411
 DR9411!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DR9411!SPC MD       -   1.00000473  x   0.99996241  =   0.99996714
 DR9411!UTM  18      -   1.00000473  x   0.99974180  =   0.99974653
 DR9411
 DR9411_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9268435639(NAD 83)
 DR9411
 DR9411                          SUPERSEDED SURVEY CONTROL
 DR9411
 DR9411.No superseded survey control is available for this station.
 DR9411
 DR9411_MARKER: DD = SURVEY DISK
 DR9411_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DR9411_STAMPING: HUMPHREY AZ 2021
 DR9411_MARK LOGO: MD-029
 DR9411_PROJECTION: FLUSH
 DR9411_MAGNETIC: N = NO MAGNETIC MATERIAL
 DR9411_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DR9411+STABILITY: SURFACE MOTION
 DR9411_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DR9411+SATELLITE: SATELLITE OBSERVATIONS - December 15, 2021
 DR9411
 DR9411  HISTORY     - Date     Condition        Report By
 DR9411  HISTORY     - 20211215 MONUMENTED       MDSHA
 DR9411  HISTORY     - 20250415 GOOD             PROFLN
 DR9411
 DR9411                          STATION DESCRIPTION
 DR9411
 DR9411'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2021 (EBD)
 DR9411'THE MARK IS LOCATED ABOUT 9.9 MI (15.9 KM) WEST-SOUTHWEST OF
 DR9411'CHESTERTOWN, 9.6 MI (15.4 KM) SOUTHWEST OF HANESVILLE, 5.5 MI (8.8 KM)
 DR9411'SOUTHWEST OF FAIRLEE AND 1.8 MI (2.9 KM) NORTH-NORTHWEST OF ROCK HALL.
 DR9411'TO REACH MARK FROM THE JUNCTION OF MD 20 W, GO WEST-NORTHWEST ON MD 20
 DR9411'W FOR 6.60 MI (10.62 KM) TO AN INTERSECTION.  TURN RIGHT AND GO WEST
 DR9411'ON REESES CORNER ROAD FOR 2.10 MI (3.38 KM) TO AN INTERSECTION.  TURN
 DR9411'LEFT AND GO SOUTH ON SHARP LEFT ONTO MD 445 S FOR 1.40 MI (2.25 KM) TO
 DR9411'THE MARK ON THE RIGHT.
 DR9411'
 DR9411'THE MARK IS 191.2 FT (58.3 M) NORTHEAST OF A UTILITY POLE NUMBERED DPL
 DR9411'23812-22359, 71.5 FT (21.8 M) EAST OF A UTILITY POLE NUMBERED DPL
 DR9411'28813-22376, 64.7 FT (19.7 M) SOUTHEAST OF A METAL POLE WITH SIGN FOR
 DR9411'6720 TOLCHESTER ROAD, 22.7 FT (6.9 M) SOUTHEAST OF THE CENTERLINE OF
 DR9411'STATE ROUTE MD 445, 16.9 FT (5.2 M) WEST OF A UTILITY POLE NUMBERED
 DR9411'DPL 28823-22374 SET IN THE TOP OF A 12-IN (30 CM) ROUND CONCRETE POST
 DR9411'AND ABOUT LEVEL WITH THE ROAD.
 DR9411
 DR9411                          STATION RECOVERY (2025)
 DR9411
 DR9411'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DR9411'THE MARK IS ABOUT ON THE CENTERLINE EXTENDED OF ASPHALT DRIVEWAY TO
 DR9411'SWAN HALL FARM TO NORTHWEST, ON LINE BETWEEN POLE DPL 22813-22376
 DR9411'ACROSS THE HIGHWAY AND THE NEARBY POLE (22823-22374), 4 FT (1.2 M)
 DR9411'SOUTHERLY OF A LINE THROUGH THE NEARBY POLE PERPENDICULAR TO THE
 DR9411'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5789 ***********************************************************************
 JV5789  DESIGNATION -  HUN
 JV5789  PID         -  JV5789
 JV5789  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5789  COUNTRY     -  US
 JV5789  USGS QUAD   -  ROUND BAY (2016)
 JV5789
 JV5789                         *CURRENT SURVEY CONTROL
 JV5789  ______________________________________________________________________
 JV5789* NAD 83(1991) POSITION- 39 05 02.10764(N) 076 30 37.96355(W)   ADJUSTED
 JV5789* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5789  ______________________________________________________________________
 JV5789  GEOID HEIGHT    -        -33.154 (meters)                     GEOID18
 JV5789  LAPLACE CORR    -         -3.46  (seconds)                    DEFLEC18
 JV5789  HORZ ORDER      -  THIRD
 JV5789
 JV5789.The horizontal coordinates were established by classical geodetic methods
 JV5789.and adjusted by the National Geodetic Survey in January 1992.
 JV5789
 JV5789.The orthometric height was scaled from a topographic map.
 JV5789
 JV5789.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5789.GEOID18 height accuracy estimate available here.
 JV5789
 JV5789.Click photographs - Photos may exist for this station.
 JV5789
 JV5789.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5789
 JV5789. The following values were computed from the NAD 83(1991) position.
 JV5789
 JV5789;                    North         East     Units Scale Factor Converg.
 JV5789;SPC MD       -   157,435.659   442,347.511   MT  0.99995643   +0 18 25.9
 JV5789;SPC MD       -   516,520.16  1,451,268.46   sFT  0.99995643   +0 18 25.9
 JV5789;UTM  18      - 4,327,175.134   369,350.733   MT  0.99981018   -0 57 08.9
 JV5789
 JV5789!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5789!SPC MD       -   1.00000508  x   0.99995643  =   0.99996151
 JV5789!UTM  18      -   1.00000508  x   0.99981018  =   0.99981526
 JV5789
 JV5789:                Primary Azimuth Mark                     Grid Az
 JV5789:SPC MD       -  DEL                                      243 03 05.1
 JV5789:UTM  18      -  DEL                                      244 18 39.9
 JV5789
 JV5789_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6935027175(NAD 83)
 JV5789
 JV5789|---------------------------------------------------------------------|
 JV5789| PID    Reference Object                     Distance      Geod. Az  |
 JV5789|                                                           dddmmss.s |
 JV5789| CA9547 HUN RM                               20.600 METERS 05929     |
 JV5789| JV5777 DEL                                 APPROX. 0.7 KM 2432131.0 |
 JV5789|---------------------------------------------------------------------|
 JV5789
 JV5789                          SUPERSEDED SURVEY CONTROL
 JV5789
 JV5789  NAD 83(1986)-  39 05 02.10371(N)    076 30 37.97388(W) AD(       ) 3
 JV5789  NAD 27      -  39 05 01.70700(N)    076 30 39.11300(W) AD(       ) 3
 JV5789
 JV5789.Superseded values are not recommended for survey control.
 JV5789
 JV5789.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5789.See file dsdata.pdf to determine how the superseded data were derived.
 JV5789
 JV5789_MARKER: DS = TRIANGULATION STATION DISK
 JV5789_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5789_STAMPING: HUN 1933
 JV5789_MARK LOGO: CGS
 JV5789_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5789+STABILITY: SURFACE MOTION
 JV5789
 JV5789  HISTORY     - Date     Condition        Report By
 JV5789  HISTORY     - 1933     MONUMENTED       CGS
 JV5789  HISTORY     - 1961     GOOD             CGS
 JV5789  HISTORY     - 1977     GOOD             NGS
 JV5789
 JV5789                          STATION DESCRIPTION
 JV5789
 JV5789'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5789'THIS STATION IS ON THE N SHORE OF THE UPPER MAGOTHY RIVER, ON A
 JV5789'POINT HALF-WAY BETWEEN ROSS COVE AND NORTH FERRY POINT, IN THE
 JV5789'FRONT YARD OF A MODERN LOG HOUSE OWNED BY DR. G.L. HUNNER, ON
 JV5789'THE TOP OF A BANK 20 FEET HIGH AND ABOUT 25 FEET N OF ITS
 JV5789'EDGE.  THERE ARE NO TREES NEAR THE STATION.  A CONCRETE RETAINING
 JV5789'WALL PROTECTS THE ENTIRE POINT.
 JV5789'
 JV5789'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV5789'CONCRETE.
 JV5789'
 JV5789'STATION AND REFERENCE MARKS ARE SET FLUSH WITH THE SURFACE OF
 JV5789'THE GROUND.
 JV5789'
 JV5789'DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 JV5789'REFERENCE ARE AS FOLLOWS--SW CORNER OF FRONT PORCH OF HUNNER
 JV5789'RESIDENCE, 58.75 METERS (192.75 FEET), S 73 DEG W--ALMOST
 JV5789'ON RANGE WITH STATION AND REFERENCE MARK.  8-INCH WILD CHERRY
 JV5789'TREE, 40.66 METERS (133.4 FEET), S 41 DEG W.  THE POINT
 JV5789'OCCUPIED BY THE STATION IS KNOWN AS PEA PATCH POINT.
 JV5789
 JV5789                          STATION RECOVERY (1961)
 JV5789
 JV5789'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5789'THE STATION AND REFERENCE MARK WERE RECOVERED IN GOOD
 JV5789'CONDITION.  BOTH THE STATION AND R.M. ARE STAMPED HUN 1933.  THE
 JV5789'PREVIOUS DESCRIPTION BY J.A.B. IN 1933 IS COMPLETE AND WITH THE
 JV5789'FOLLOWING EXCEPTIONS.  THE PROPERTY IS NOW KNOWN AS RICKS PINE
 JV5789'LODGE.  THE WILD CHERRY TREE ON RANGE WITH THE STATION AND
 JV5789'R.M. NO LONGER EXISTS.
 JV5789
 JV5789                          STATION RECOVERY (1977)
 JV5789
 JV5789'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN)
 JV5789'THE STATION MARK AND REFERENCE MARK WERE RECOVERED AND FOUND IN
 JV5789'GOOD CONDITION.
 JV5789'
 JV5789'THE STATION IS LOCATED ON THE NORTH SHORE OF UPPER MAGOTHY
 JV5789'RIVER, ON PEA PATCH POINT, ABOUT 2 MILES SOUTH OF LAKE SHORE AND
 JV5789'ABOUT 200 FEET SOUTH OF THE PINE RIDGE LODGE.
 JV5789'
 JV5789'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 177
 JV5789'AND LAKE SHORE DRIVE AT THE FIRE DEPARTMENT IN THE VILLAGE OF LAKE
 JV5789'SHORE, GO SOUTHWESTERLY ON LAKE SHORE DRIVE FOR 1.35 MILES TO
 JV5789'FORKS, TAKE LEFT FORK, GO SOUTHERLY ON FERRY POINT ROAD FOR 0.35
 JV5789'MILE TO FORKS, KEEP RIGHT, GO 0.05 MILE TO FORKS, KEEP RIGHT
 JV5789'FOR 0.1 MILE TO FORKS, KEEP RIGHT, GO 0.05 MILE, KEEP RIGHT FOR
 JV5789'0.05 MILE TO FORK, KEEP LEFT, PASSING TO THE RIGHT OF THE LARGE
 JV5789'LOG CABIN (PINE RIDGE LODGE) FOR 0.15 MILE TO THE STATION.
 JV5789'
 JV5789'STATION MARK IS A STANDARD DISK SET TOP OF 12 INCH SQUARE CONCRETE
 JV5789'MONUMENT FLUSH WITH THE GROUND AND IS STAMPED HUN 1933.  IT IS
 JV5789'192 FEET SOUTH OF THE LARGE LOG HOUSE (PINE RIDGE LODGE), 106
 JV5789'FEET EAST-SOUTHEAST OF THE SOUTHEAST CORNER OF THE BEDERMAN
 JV5789'CABIN, 89.2 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF A BEACH
 JV5789'HOUSE, 25 FEET NORTH OF RETAINING WALL AND 1.0 FEET EAST OF
 JV5789'WITNESS POST.
 JV5789'
 JV5789'REFERENCE MARK IS A STANDARD DISK SET TOP OF A 12 INCH SQUARE
 JV5789'CONCRETE MONUMENT FLUSH WITH THE GROUND AND IS STAMPED HUN
 JV5789'1933.  IT IS 68.2 FEET NORTHEAST OF WITNESS POST, 53.8 FEET WEST
 JV5789'OF SOUTHWEST CORNER OF A BEACH HOUSE, 112 FEET EAST OF THE
 JV5789'NORTHEAST CORNER OF THE BEDERMAN CABIN AND 67.6 FEET NORTH OF THE
 JV5789'STATION MARK.
 JV5789'
 JV5789'NO AZIMUTH MARK AT THIS STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2859 ***********************************************************************
 JV2859  DESIGNATION -  HUNT
 JV2859  PID         -  JV2859
 JV2859  STATE/COUNTY-  MD/MONTGOMERY
 JV2859  COUNTRY     -  US
 JV2859  USGS QUAD   -  ROCKVILLE (2016)
 JV2859
 JV2859                         *CURRENT SURVEY CONTROL
 JV2859  ______________________________________________________________________
 JV2859* NAD 83(1993) POSITION- 39 05 04.77587(N) 077 11 50.94647(W)   ADJUSTED
 JV2859* NAVD 88 ORTHO HEIGHT -   152.574 (meters)      500.57  (feet) ADJUSTED
 JV2859  ______________________________________________________________________
 JV2859  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV2859  LAPLACE CORR    -         -0.17  (seconds)                    DEFLEC18
 JV2859  DYNAMIC HEIGHT  -        152.495 (meters)      500.31  (feet) COMP
 JV2859  MODELED GRAVITY -    980,106.6   (mgal)                       NAVD 88
 JV2859
 JV2859  HORZ ORDER      -  FIRST
 JV2859  VERT ORDER      -  SECOND    CLASS 0
 JV2859
 JV2859.The horizontal coordinates were established by classical geodetic methods
 JV2859.and adjusted by the National Geodetic Survey in November 1994.
 JV2859
 JV2859.The orthometric height was determined by differential leveling and
 JV2859.adjusted by the NATIONAL GEODETIC SURVEY
 JV2859.in June 1991.
 JV2859
 JV2859.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2859.GEOID18 height accuracy estimate available here.
 JV2859
 JV2859.Click photographs - Photos may exist for this station.
 JV2859
 JV2859.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2859
 JV2859.The dynamic height is computed by dividing the NAVD 88
 JV2859.geopotential number by the normal gravity value computed on the
 JV2859.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2859.degrees latitude (g = 980.6199 gals.).
 JV2859
 JV2859.The modeled gravity was interpolated from observed gravity values.
 JV2859
 JV2859. The following values were computed from the NAD 83(1993) position.
 JV2859
 JV2859;                    North         East     Units Scale Factor Converg.
 JV2859;SPC MD       -   157,422.894   382,913.736   MT  0.99995647   -0 07 26.2
 JV2859;SPC MD       -   516,478.28  1,256,276.15   sFT  0.99995647   -0 07 26.2
 JV2859;SPC VA N     - 2,158,199.092 3,612,691.737   MT  0.99998157   +0 48 46.5
 JV2859;SPC VA N     - 7,080,691.52 11,852,639.47   sFT  0.99998157   +0 48 46.5
 JV2859;UTM  18      - 4,328,470.046   309,933.217   MT  1.00004484   -1 23 09.1
 JV2859
 JV2859!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2859!SPC MD       -   0.99998104  x   0.99995647  =   0.99993751
 JV2859!SPC VA N     -   0.99998104  x   0.99998157  =   0.99996261
 JV2859!UTM  18      -   0.99998104  x   1.00004484  =   1.00002588
 JV2859
 JV2859:                Primary Azimuth Mark                     Grid Az
 JV2859:SPC MD       -  HUNT AZ MK                               033 53 26.0
 JV2859:SPC VA N     -  HUNT AZ MK                               032 57 13.3
 JV2859:UTM  18      -  HUNT AZ MK                               035 09 08.9
 JV2859
 JV2859_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0993328470(NAD 83)
 JV2859
 JV2859|---------------------------------------------------------------------|
 JV2859| PID    Reference Object                     Distance      Geod. Az  |
 JV2859|                                                           dddmmss.s |
 JV2859| JV6898 HUNT AZ MK 2                        451.527 METERS 0245040.4 |
 JV2859| CK7517 HUNT RM 1                            15.702 METERS 02610     |
 JV2859| CK7516 HUNT AZ MK                                         0334559.8 |
 JV2859| JV4376 ROCKVILLE SMALL MUN TANK            APPROX. 3.2 KM 0833614.7 |
 JV2859| JV4303 FOREST GLEN RAD STA WOL FM TWR      APPROX.16.0 KM 1253650.5 |
 JV2859| JV4287 FOREST GLEN RAD STA WWDC FM TR      APPROX.15.4 KM 1270825.2 |
 JV2859| JV4387 ROCKVILLE MONTGOMERY SQ TANK        APPROX. 3.4 KM 1440431.1 |
 JV2859| CK7518 HUNT RM 2                            17.004 METERS 20837     |
 JV2859| JV4373 HUNTING HILL 2                       53.908 METERS 25446     |
 JV2859|---------------------------------------------------------------------|
 JV2859
 JV2859                          SUPERSEDED SURVEY CONTROL
 JV2859
 JV2859  NAD 83(1991)-  39 05 04.77545(N)    077 11 50.94713(W) AD(       ) 1
 JV2859  NAD 83(1986)-  39 05 04.77550(N)    077 11 50.95689(W) AD(       ) 1
 JV2859  NAD 27      -  39 05 04.38534(N)    077 11 52.01957(W) AD(       ) 1
 JV2859  NGVD 29             152.80   (m)          501.3    (f) LEVELING    3  
 JV2859  NGVD 29             152.72   (m)          501.0    (f) LEVELING    3  
 JV2859  NGVD 29 (11/26/84)  152.798  (m)          501.30   (f) ADJUSTED    2 0
 JV2859
 JV2859.Superseded values are not recommended for survey control.
 JV2859
 JV2859.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2859.See file dsdata.pdf to determine how the superseded data were derived.
 JV2859
 JV2859_MARKER: DS = TRIANGULATION STATION DISK
 JV2859_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2859_STAMPING: HUNT 1956
 JV2859_MARK LOGO: CGS
 JV2859_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV2859_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2859+STABILITY: SURFACE MOTION
 JV2859
 JV2859  HISTORY     - Date     Condition        Report By
 JV2859  HISTORY     - 1956     MONUMENTED       CGS
 JV2859  HISTORY     - 1958     GOOD             CGS
 JV2859  HISTORY     - 1965     GOOD             WSSC
 JV2859  HISTORY     - 1969     GOOD             CGS
 JV2859  HISTORY     - 1987     GOOD             NGS
 JV2859  HISTORY     - 1990     POOR             USPSQD
 JV2859
 JV2859                          STATION DESCRIPTION
 JV2859
 JV2859'DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (MLC)
 JV2859'THE STATION IS LOCATED ABOUT 2-1/2 MILES WEST OF ROCKVILLE ON THE
 JV2859'SUMMIT OF THE HIGHEST HILL IN THE VICINITY.  THE STATION MARK IS A
 JV2859'STANDARD DISK, STAMPED HUNT 1956, AND SET IN THE TOP OF A SQUARE
 JV2859'CONCRETE POST THAT PROJECTS 4 INCHES.  THE MARK IS 26.5 FEET EAST
 JV2859'OF THE CENTERLINE OF GLEN MILL ROAD AND 5.5 FEET SOUTHWEST OF A
 JV2859'WHITE WITNESS POST.  IT IS 20.2 FEET NORTHEAST OF POWERLINE POLE
 JV2859'NO. 20 AND ON COUNTY HIGHWAY RIGHT-OF-WAY.
 JV2859'
 JV2859'REFERENCE MARK NO. 1, STAMPED HUNT NO 1 1956, IS A STANDARD DISK SET
 JV2859'IN A SQUARE CONCRETE POST THAT PROJECTS 4 INCHES.  IT IS 28.5 FEET
 JV2859'EAST OF THE CENTERLINE OF GLEN MILL ROAD AND 38 FEET SOUTH OF A
 JV2859'POWERLINE POLE.
 JV2859'
 JV2859'REFERENCE MARK NO. 2, STAMPED HUNT NO 2 1956, IS A STANDARD DISK SET
 JV2859'IN A SQUARE CONCRETE POST THAT PROJECTS 5 INCHES.  IT IS 26 FEET
 JV2859'EAST OF THE CENTERLINE OF GLEN MILL ROAD AND 34.5 FEET SOUTH OF
 JV2859'POWER LINE POLE NO. 20.
 JV2859'
 JV2859'THE AZIMUTH MARK, STAMPED HUNT 1956, IS A STANDARD DISK SET IN THE
 JV2859'TOP OF A SQUARE CONCRETE POST THAT PROJECTS 4 INCHES.  IT IS 2 FEET
 JV2859'SOUTHWEST OF A WITNESS POST, 2 FEET WEST OF IRON STAKE NO. 75, 2
 JV2859'FEET NORTH OF A BARBED WIRE FENCE, 8 FEET EAST OF POWERLINE POLE NO.
 JV2859'610585, AND 19 FEET SOUTH OF THE CENTERLINE OF STATE ROUTE NO.
 JV2859'28.
 JV2859'
 JV2859'TO REACH THE STATION FROM THE POST OFFICE IN ROCKVILLE.  GO
 JV2859'NORTHWESTERLY ON STATE ROUTE NO. 28 FOR 2.3 MILES TO THE AZIMUTH
 JV2859'MARK ON THE LEFT NEAR IRON STAKE NO. 75.  CONTINUE AHEAD ON ROUTE
 JV2859'28 FOR 0.2 MILE TO GLEN MILL ROAD.  TURN LEFT ON GLEN MILL ROAD AND
 JV2859'GO 0.65 MILE TO THE SUMMIT OF THE HILL AND STATION ON THE LEFT.
 JV2859'
 JV2859'A TRAVERSE CONNECTION WAS MADE TO HUNTING HILL (WSSD) 1924.
 JV2859
 JV2859                          STATION RECOVERY (1958)
 JV2859
 JV2859'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2859'STATION WAS RECOVERED AS DESCRIBED IN 1956 DESCRIPTIONS AND ALL MARKS
 JV2859'FOUND IN GOOD CONDITION.  A CHECK WAS MADE OF THE DISTANCE AND
 JV2859'DIRECTION TO THE MARKS AND A SLIGHT DIFFERENCE FOUND IN THE
 JV2859'DISTANCES TO REFERENCE MARKS.  A LARGE CONCRETE WATER TANK NOW SETS
 JV2859'110 FEET WEST OF STATION MARK.  THE ORIGINAL DESCRIPTION IS
 JV2859'ADEQUATE.
 JV2859
 JV2859                          STATION RECOVERY (1965)
 JV2859
 JV2859'RECOVERY NOTE BY WASH SUBURB SAN COMM 1965
 JV2859'3 MI NW FROM ROCKVILLE.
 JV2859'2.5 MI. W. ALONG STATE HWY. 28 FROM THE COURTHOUSE AT ROCKVILLE,
 JV2859'THENCE 0.5 MI. S. ALONG GLEN MILL ROAD ON THE SUMMIT OF THE
 JV2859'HIGHEST HILL IN THE VICINITY, 450 FT. S. OF THE ENTRANCE ROAD TO
 JV2859'LAKEWOOD COUNTRY CLUB, 26.5 FT. E. OF THE CENTERLINE OF GLEN MILL
 JV2859'ROAD, 20.2 FT. N.E. OF POWERLINE POLE 20 AND 5.5 FT. S.W. OF A
 JV2859'WHITE WITNESS POST.  THE MARK PROJECTS 0.2 FT. ABOVE THE SURFACE
 JV2859'OF THE GROUND.
 JV2859
 JV2859                          STATION RECOVERY (1969)
 JV2859
 JV2859'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV2859'THE STATION MARK AND THE AZIMUTH MARK WERE RECOVERED IN GOOD
 JV2859'CONDITION.  REFERENCE MARK 2 WAS RECOVERED BUT WAS FOUND TO BE
 JV2859'BATTERED BADLY.  THE DISK OF REFERENCE MARK ONE HAS BEEN BROKEN OFF
 JV2859'AT THE STEM.  A DIFFERENCE OF 0.1 FOOT WAS NOTED IN THE
 JV2859'MEASUREMENT TO REFERENCE MARK 2.  FOLLOWING IS A NEW DESCRIPTION.
 JV2859'
 JV2859'THE STATION IS ABOUT 3 MILES WEST OF ROCKVILLE, 175 FEET EAST OF
 JV2859'THE HIGHEST POINT IN THE IMMEDIATE VICINITY AND ON THE RIGHT-OF-WAY
 JV2859'OF GLEN MILL ROAD.
 JV2859'
 JV2859'TO REACH THE STATION FROM THE POINT WHERE STATE HIGHWAY 28 CROSSES
 JV2859'OVER INTERSTATE HIGHWAY 70 S, GO WESTERLY ON STATE HIGHWAY 28
 JV2859'FOR 1.4 MILES TO A SIDE ROAD LEFT, GLEN MILL ROAD.  TURN LEFT AND
 JV2859'GO SOUTH ON GLEN MILL ROAD FOR 0.6 MILE TO THE STATION ON THE LEFT.
 JV2859'
 JV2859'THE STATION MARK IS A STANDARD DISK, STAMPED HUNT 1956, SET IN THE
 JV2859'TOP OF A 12-INCH SQUARE CONCRETE POST, THAT PROJECTS 3 INCHES ABOVE
 JV2859'THE GROUND.  IT IS 25.5 FEET EAST-SOUTHEAST OF THE CENTERLINE OF
 JV2859'GLEN MILL ROAD, 25.5 FEET NORTH-NORTHEAST OF A POWER LINE POLE,
 JV2859'AND 19.2 FEET WEST-SOUTHWEST OF A POWERLINE POLE NUMBERED M 4731.
 JV2859'
 JV2859'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED HUNT NO 2 1956, SET IN
 JV2859'THE TOP OF A 10-INCH SQUARE CONCRETE POST, THAT PROJECTS 2 INCHES
 JV2859'ABOVE THE GROUND.  IT IS 36.2 FEET SOUTH-SOUTHWEST OF A POWER LINE
 JV2859'POLE, AND 23.5 FEET EAST-SOUTHEAST OF THE CENTERLINE OF GLEN MILL
 JV2859'ROAD.
 JV2859'
 JV2859'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED HUNT 1956, SET IN THE
 JV2859'TOP OF A 12-INCH SQUARE CONCRETE POST, THAT IS FLUSH WITH THE GROUND
 JV2859'SURFACE.  IT IS 19.0 FEET SOUTH OF THE CENTERLINE OF STATE HIGHWAY
 JV2859'28 AND 18.4 FEET WEST OF A POWER LINE POLE NUMBERED 610585.
 JV2859'
 JV2859'TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH ON GLEN MILL
 JV2859'ROAD FOR 0.6 MILE TO THE JUNCTION OF STATE HIGHWAY 28.  TURN RIGHT
 JV2859'AND GO EAST ON STATE HIGHWAY 28 FOR 0.15 MILE TO THE MARK ON THE
 JV2859'RIGHT.
 JV2859'
 JV2859'RESULTS OF A SECOND ORDER TRAVERSE.
 JV2859'
 JV2859'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES WEST OF
 JV2859'ROCKVILLE.
 JV2859
 JV2859                          STATION RECOVERY (1987)
 JV2859
 JV2859'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (RGP)
 JV2859'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES NOTED BELOW --
 JV2859'THE STATION MARK, REFERENCE MARK ONE AND REFERENCE MARK TWO WERE
 JV2859'RECOVERED AS DESCRIBED IN THE MOST RECENT INFORMATION AVAILABLE.
 JV2859'THE AZIMUTH MARK WAS SEARCHED FOR BUT NOT FOUND.  ROAD CONSTRUCTION
 JV2859'HAS TAKEN PLACE IN THE AREA OF THE OLD AZIMUTH MARK AND IT IS
 JV2859'BELIEVED THAT CONSTRUCTION DESTROYED THE OLD MARK.  A NEW AZIMUTH
 JV2859'WAS ESTABLISHED TO A MARYLAND STATE HIGHWAY ADMINISTRATION STATION
 JV2859'WHICH HAD RECENTLY BEEN SET IN THE AREA.  SEE THE DESCRIPTION FOR
 JV2859'STATION HUNT AZ MK 2 NDSHA.  THE CENTER OF THE STEM ON REFERENCE
 JV2859'MARK ONE WAS USED FOR THE INTERSECTION POINT.  THE DISK HAS BEEN
 JV2859'REMOVED AS PREVIOUSLY REPORTED.  THE DISTANCES AND DIRECTIONS TO ALL
 JV2859'OBJECTS WERE WITHIN CLOSE AGREEMENT WITH THE MOST INFORMATION
 JV2859'AVAILABLE.
 JV2859
 JV2859                          STATION RECOVERY (1990)
 JV2859
 JV2859'RECOVERY NOTE BY US POWER SQUADRON 1990 (BG)
 JV2859'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4799 ***********************************************************************
 AB4799  DESIGNATION -  HUNT
 AB4799  PID         -  AB4799
 AB4799  STATE/COUNTY-  MD/CARROLL
 AB4799  COUNTRY     -  US
 AB4799  USGS QUAD   -  MANCHESTER (2016)
 AB4799
 AB4799                         *CURRENT SURVEY CONTROL
 AB4799  ______________________________________________________________________
 AB4799* NAD 83(2011) POSITION- 39 38 26.67354(N) 076 55 14.28214(W)   ADJUSTED
 AB4799* NAD 83(2011) ELLIP HT-   216.698 (meters)        (06/27/12)   ADJUSTED
 AB4799* NAD 83(2011) EPOCH   -  2010.00
 AB4799* NAVD 88 ORTHO HEIGHT -   249.0   (meters)      817.    (feet) GPS OBS
 AB4799  ______________________________________________________________________
 AB4799  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4799  GEOID HEIGHT    -        -32.314 (meters)                     GEOID99
 AB4799  GEOID HEIGHT    -        -32.301 (meters)                     GEOID18
 AB4799  NAD 83(2011) X  -  1,113,040.740 (meters)                     COMP
 AB4799  NAD 83(2011) Y  - -4,790,822.578 (meters)                     COMP
 AB4799  NAD 83(2011) Z  -  4,047,487.067 (meters)                     COMP
 AB4799  LAPLACE CORR    -          3.30  (seconds)                    DEFLEC18
 AB4799
 AB4799  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4799  Standards:
 AB4799         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4799            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4799  -------------------------------------------------------------------
 AB4799  NETWORK    1.19   6.61           0.47   0.50   3.37      0.04847172
 AB4799  -------------------------------------------------------------------
 AB4799  Click here for local accuracies and other accuracy information.
 AB4799
 AB4799.The horizontal coordinates were established by GPS observations
 AB4799.and adjusted by the National Geodetic Survey in June 2012.
 AB4799
 AB4799.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4799.been affixed to the stable North American tectonic plate. See 
 AB4799.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4799
 AB4799.The horizontal coordinates are valid at the epoch date displayed above
 AB4799.which is a decimal equivalence of Year/Month/Day.
 AB4799
 AB4799.The orthometric height was determined by GPS observations and a
 AB4799.high-resolution geoid model.
 AB4799
 AB4799.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4799.GEOID18 height accuracy estimate available here.
 AB4799
 AB4799.Click photographs - Photos may exist for this station.
 AB4799
 AB4799.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4799
 AB4799.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4799
 AB4799.The ellipsoidal height was determined by GPS observations
 AB4799.and is referenced to NAD 83.
 AB4799
 AB4799. The following values were computed from the NAD 83(2011) position.
 AB4799
 AB4799;                    North         East     Units Scale Factor Converg.
 AB4799;SPC MD       -   219,144.388   406,813.023   MT  1.00003894   +0 02 59.3
 AB4799;SPC MD       -   718,976.21  1,334,685.73   sFT  1.00003894   +0 02 59.3
 AB4799;UTM  18      - 4,389,647.020   335,193.527   MT  0.99993441   -1 13 32.1
 AB4799
 AB4799!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4799!SPC MD       -   0.99996600  x   1.00003894  =   1.00000494
 AB4799!UTM  18      -   0.99996600  x   0.99993441  =   0.99990042
 AB4799
 AB4799_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3519389647(NAD 83)
 AB4799
 AB4799                          SUPERSEDED SURVEY CONTROL
 AB4799
 AB4799  NAD 83(2007)-  39 38 26.67375(N)    076 55 14.28288(W) AD(2002.00) 0
 AB4799  ELLIP H (02/10/07)  216.716  (m)                       GP(2002.00)    
 AB4799  ELLIP H (08/30/02)  216.712  (m)                       GP(       ) 4 2
 AB4799  NAD 83(1991)-  39 38 26.67346(N)    076 55 14.28328(W) AD(       ) 1
 AB4799  ELLIP H (07/03/96)  216.639  (m)                       GP(       ) 1 1
 AB4799  NAVD 88 (07/03/96)  249.0    (m)  GEOID93  model used  GPS OBS        
 AB4799
 AB4799.Superseded values are not recommended for survey control.
 AB4799
 AB4799.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4799.See file dsdata.pdf to determine how the superseded data were derived.
 AB4799
 AB4799_MARKER: DD = SURVEY DISK
 AB4799_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4799_STAMPING: HUNT 1995
 AB4799_MARK LOGO: MD-013
 AB4799_PROJECTION: FLUSH
 AB4799_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4799_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4799+STABILITY: SURFACE MOTION
 AB4799_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4799+SATELLITE: SATELLITE OBSERVATIONS - April 12, 2015
 AB4799
 AB4799  HISTORY     - Date     Condition        Report By
 AB4799  HISTORY     - 1995     MONUMENTED       MD-013
 AB4799  HISTORY     - 20150412 GOOD             RODCON
 AB4799
 AB4799                          STATION DESCRIPTION
 AB4799
 AB4799'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4799'STATION IS LOCATED ABOUT 6 MI (9.7 KM) NORTHEAST OF WESTMINSTER AND
 AB4799'ABOUT 2.5 MI (4.0 KM) SOUTHWEST OF MANCHESTER. TO REACH STATION FROM
 AB4799'THE INTERSECTION OF MD ROUTE 30 (HANOVER PIKE) AND MD ROUTE 27
 AB4799'(MANCHESTER ROAD) AT MANCHESTER, GO SOUTHWEST ON MD ROUTE 27 FOR 2.6
 AB4799'MI (4.2 KM) TO THE STATION ON THE LEFT. STATION MARK IS SET IN THE TOP
 AB4799'OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS
 AB4799'54.0 FT (16.5 M) SOUTHEAST OF THE CENTERLINE OF THE ROAD, 108 FT (32.9
 AB4799'M) NORTHEAST OF POWER POLE NO.151894, 28.0 FT (8.5 M) SOUTHWEST OF A
 AB4799'SIGN AND 82.6 FT (25.2 M) SOUTHWEST OF TELEPHONE POLE NO.5.
 AB4799
 AB4799                          STATION RECOVERY (2015)
 AB4799
 AB4799'RECOVERY NOTE BY RODGERS CONSULTING INC 2015 (JMB)
 AB4799'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4637 ***********************************************************************
 AB4637  DESIGNATION -  HUNT AZ MK
 AB4637  PID         -  AB4637
 AB4637  STATE/COUNTY-  MD/CARROLL
 AB4637  COUNTRY     -  US
 AB4637  USGS QUAD   -  MANCHESTER (2016)
 AB4637
 AB4637                         *CURRENT SURVEY CONTROL
 AB4637  ______________________________________________________________________
 AB4637* NAD 83(2011) POSITION- 39 38 41.61733(N) 076 54 58.39814(W)   ADJUSTED
 AB4637* NAD 83(2011) ELLIP HT-   219.866 (meters)        (06/27/12)   ADJUSTED
 AB4637* NAD 83(2011) EPOCH   -  2010.00
 AB4637* NAVD 88 ORTHO HEIGHT -   252.2   (meters)      827.    (feet) GPS OBS
 AB4637  ______________________________________________________________________
 AB4637  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4637  GEOID HEIGHT    -        -32.321 (meters)                     GEOID99
 AB4637  GEOID HEIGHT    -        -32.308 (meters)                     GEOID18
 AB4637  NAD 83(2011) X  -  1,113,343.653 (meters)                     COMP
 AB4637  NAD 83(2011) Y  - -4,790,452.808 (meters)                     COMP
 AB4637  NAD 83(2011) Z  -  4,047,843.996 (meters)                     COMP
 AB4637  LAPLACE CORR    -          3.32  (seconds)                    DEFLEC18
 AB4637
 AB4637  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4637  Standards:
 AB4637         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4637            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4637  -------------------------------------------------------------------
 AB4637  NETWORK    0.98   4.43           0.38   0.42   2.26      0.00493520
 AB4637  -------------------------------------------------------------------
 AB4637  Click here for local accuracies and other accuracy information.
 AB4637
 AB4637.The horizontal coordinates were established by GPS observations
 AB4637.and adjusted by the National Geodetic Survey in June 2012.
 AB4637
 AB4637.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4637.been affixed to the stable North American tectonic plate. See 
 AB4637.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4637
 AB4637.The horizontal coordinates are valid at the epoch date displayed above
 AB4637.which is a decimal equivalence of Year/Month/Day.
 AB4637
 AB4637.The orthometric height was determined by GPS observations and a
 AB4637.high-resolution geoid model.
 AB4637
 AB4637.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4637.GEOID18 height accuracy estimate available here.
 AB4637
 AB4637.Click photographs - Photos may exist for this station.
 AB4637
 AB4637.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4637
 AB4637.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4637
 AB4637.The ellipsoidal height was determined by GPS observations
 AB4637.and is referenced to NAD 83.
 AB4637
 AB4637. The following values were computed from the NAD 83(2011) position.
 AB4637
 AB4637;                    North         East     Units Scale Factor Converg.
 AB4637;SPC MD       -   219,605.626   407,191.358   MT  1.00003991   +0 03 09.3
 AB4637;SPC MD       -   720,489.46  1,335,926.98   sFT  1.00003991   +0 03 09.3
 AB4637;UTM  18      - 4,390,099.675   335,581.994   MT  0.99993283   -1 13 22.4
 AB4637
 AB4637!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4637!SPC MD       -   0.99996551  x   1.00003991  =   1.00000542
 AB4637!UTM  18      -   0.99996551  x   0.99993283  =   0.99989834
 AB4637
 AB4637_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3558190099(NAD 83)
 AB4637
 AB4637                          SUPERSEDED SURVEY CONTROL
 AB4637
 AB4637  NAD 83(2007)-  39 38 41.61754(N)    076 54 58.39889(W) AD(2002.00) 0
 AB4637  ELLIP H (02/10/07)  219.884  (m)                       GP(2002.00)    
 AB4637  ELLIP H (08/30/02)  219.880  (m)                       GP(       ) 4 2
 AB4637  NAD 83(1991)-  39 38 41.61725(N)    076 54 58.39929(W) AD(       ) 1
 AB4637  ELLIP H (07/03/96)  219.809  (m)                       GP(       ) 1 1
 AB4637  NAVD 88 (07/03/96)  252.2    (m)  GEOID93  model used  GPS OBS        
 AB4637
 AB4637.Superseded values are not recommended for survey control.
 AB4637
 AB4637.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4637.See file dsdata.pdf to determine how the superseded data were derived.
 AB4637
 AB4637_MARKER: DD = SURVEY DISK
 AB4637_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4637_STAMPING: HUNT AZI 1995
 AB4637_MARK LOGO: MD-013
 AB4637_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4637_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4637+STABILITY: SURFACE MOTION
 AB4637_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4637+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4637
 AB4637  HISTORY     - Date     Condition        Report By
 AB4637  HISTORY     - 1995     MONUMENTED       MD-013
 AB4637
 AB4637                          STATION DESCRIPTION
 AB4637
 AB4637'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4637'STATION IS LOCATED ABOUT 6.5 MI (10.5 KM) NORTHEAST OF THE CENTER OF
 AB4637'WESTMINSTER AND ABOUT 2.0 MI (3.2 KM) SOUTHWEST OF MANCHESTER. TO
 AB4637'REACH STATION FROM THE INTERSECTION OF MD ROUTE 27 (MANCHESTER ROAD)
 AB4637'AND MD ROUTE 30 (HANOVER PIKE) AT MANCHESTER GO SOUTH ON MD ROUTE 27
 AB4637'FOR 2.1 MI (3.4 KM) TO THE STATION ON THE RIGHT. STATION MARK IS SET
 AB4637'IN THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4637'GROUND. IT IS 28.0 FT (8.5 M) WEST OF THE CENTERLINE OF THE ROAD, 3.0
 AB4637'FT (0.9 M) NORTHWEST OF A GAURDRAIL, 32.0 FT (9.8 M) NORTH OF A PAVED
 AB4637'DRIVEWAY LEADING TO HOUSE NO. 2320 AND 41.5 FT (12.6 M) EAST OF
 AB4637'TELEPHONE POLE NO.1.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6898 ***********************************************************************
 JV6898  DESIGNATION -  HUNT AZ MK 2
 JV6898  PID         -  JV6898
 JV6898  STATE/COUNTY-  MD/MONTGOMERY
 JV6898  COUNTRY     -  US
 JV6898  USGS QUAD   -  ROCKVILLE (2016)
 JV6898
 JV6898                         *CURRENT SURVEY CONTROL
 JV6898  ______________________________________________________________________
 JV6898* NAD 83(1993) POSITION- 39 05 18.06257(N) 077 11 43.05261(W)   ADJUSTED
 JV6898* NAVD 88 ORTHO HEIGHT -   142.1   (meters)      466.    (feet) VERTCON3
 JV6898  ______________________________________________________________________
 JV6898  GEOID HEIGHT    -        -31.704 (meters)                     GEOID18
 JV6898  LAPLACE CORR    -         -0.17  (seconds)                    DEFLEC18
 JV6898  HORZ ORDER      -  SECOND
 JV6898
 JV6898.The horizontal coordinates were established by classical geodetic methods
 JV6898.and adjusted by the National Geodetic Survey in November 1994.
 JV6898
 JV6898.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6898.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6898
 JV6898.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6898.GEOID18 height accuracy estimate available here.
 JV6898
 JV6898.Click photographs - Photos may exist for this station.
 JV6898
 JV6898.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6898
 JV6898. The following values were computed from the NAD 83(1993) position.
 JV6898
 JV6898;                    North         East     Units Scale Factor Converg.
 JV6898;SPC MD       -   157,832.203   383,104.326   MT  0.99995671   -0 07 21.3
 JV6898;SPC MD       -   517,821.15  1,256,901.44   sFT  0.99995671   -0 07 21.3
 JV6898;SPC VA N     - 2,158,611.473 3,612,875.614   MT  0.99998209   +0 48 51.4
 JV6898;SPC VA N     - 7,082,044.47 11,853,242.74   sFT  0.99998209   +0 48 51.4
 JV6898;UTM  18      - 4,328,875.094   310,132.794   MT  1.00004390   -1 23 04.5
 JV6898
 JV6898!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6898!SPC MD       -   0.99998267  x   0.99995671  =   0.99993938
 JV6898!SPC VA N     -   0.99998267  x   0.99998209  =   0.99996476
 JV6898!UTM  18      -   0.99998267  x   1.00004390  =   1.00002657
 JV6898
 JV6898_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1013228875(NAD 83)
 JV6898
 JV6898                          SUPERSEDED SURVEY CONTROL
 JV6898
 JV6898  NAD 83(1991)-  39 05 18.06215(N)    077 11 43.05326(W) AD(       ) 2
 JV6898  NAD 83(1986)-  39 05 18.06220(N)    077 11 43.06308(W) AD(       ) 2
 JV6898  NGVD 29 (11/20/91)  142.4    (m)          467.     (f) VERT ANG       
 JV6898
 JV6898.Superseded values are not recommended for survey control.
 JV6898
 JV6898.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6898.See file dsdata.pdf to determine how the superseded data were derived.
 JV6898
 JV6898_MARKER: DD = SURVEY DISK
 JV6898_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6898_STAMPING: HUNT AZ MK 2 1987
 JV6898_MARK LOGO: MDSHA
 JV6898_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6898_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6898+STABILITY: SURFACE MOTION
 JV6898
 JV6898  HISTORY     - Date     Condition        Report By
 JV6898  HISTORY     - 1987     MONUMENTED       MDSHA
 JV6898
 JV6898                          STATION DESCRIPTION
 JV6898
 JV6898'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1987 (RGP)
 JV6898'THE STATION IS LOCATED ABOUT 4.8 KM (3.0 MI) WEST OF ROCKVILLE AND 6.4
 JV6898'KM (4.0 MI) SOUTH OF GAITHERSBURG.  OWNERSHIP--ROAD RIGHT OF WAY.
 JV6898'
 JV6898'TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAY 270
 JV6898'AND MD 28 AT GAITHERSBURG, GO NORTHWEST FOR 2.15 KM (1.34 MI) ON MD 28
 JV6898'(DARNESTOWN ROAD) TO A ROAD LEFT.  TURN LEFT AND GO SOUTH FOR 0.5 KM
 JV6898'(0.3 MI) ON GLENN MILLING ROAD TO THE MARK ON THE LEFT.
 JV6898'
 JV6898'THE STATION IS A STANDARD MDSHA DISK STAMPED---HUNT AZ MK 2 1987---,
 JV6898'SET INTO THE TOP OF A ROUND CONCRETE MONUMENT 30 CM (12 INCHES) IN
 JV6898'DIAMETER FLUSH WITH THE GROUND.  LOCATED 4.1 M (13.5 FT) SOUTHWEST
 JV6898'FROM THE CENTER OF GLENN MILLING ROAD, 22.1 M (72.5 FT) SOUTHWEST FROM
 JV6898'A TELEPHONE POLE NUMBERED 10, 1.5 M (4.9 FT) SOUTHWEST FROM A WOODED
 JV6898'FENCE LINE AND JUST OPPOSITE A HOUSE NUMBERED 14150 GLENN MILLING
 JV6898'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1005 ***********************************************************************
 JV1005  DESIGNATION -  HUNT TANK
 JV1005  PID         -  JV1005
 JV1005  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1005  COUNTRY     -  US
 JV1005  USGS QUAD   -  RELAY (2016)
 JV1005
 JV1005                         *CURRENT SURVEY CONTROL
 JV1005  ______________________________________________________________________
 JV1005* NAD 83(1986) POSITION- 39 07 40.     (N) 076 44 19.     (W)   SCALED
 JV1005* NAVD 88 ORTHO HEIGHT -    90.158 (meters)      295.79  (feet) ADJUSTED
 JV1005  ______________________________________________________________________
 JV1005  GEOID HEIGHT    -        -32.533 (meters)                     GEOID18
 JV1005  DYNAMIC HEIGHT  -         90.109 (meters)      295.63  (feet) COMP
 JV1005  MODELED GRAVITY -    980,088.4   (mgal)                       NAVD 88
 JV1005
 JV1005  VERT ORDER      -  FIRST     CLASS II
 JV1005
 JV1005.The horizontal coordinates were scaled from a map and have
 JV1005.an estimated accuracy of +/- 6 seconds.
 JV1005
 JV1005.The orthometric height was determined by differential leveling and
 JV1005.adjusted by the NATIONAL GEODETIC SURVEY
 JV1005.in June 1991.
 JV1005
 JV1005.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1005.GEOID18 height accuracy estimate available here.
 JV1005
 JV1005.Click photographs - Photos may exist for this station.
 JV1005
 JV1005.The dynamic height is computed by dividing the NAVD 88
 JV1005.geopotential number by the normal gravity value computed on the
 JV1005.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1005.degrees latitude (g = 980.6199 gals.).
 JV1005
 JV1005.The modeled gravity was interpolated from observed gravity values.
 JV1005
 JV1005;                    North         East    Units  Estimated Accuracy
 JV1005;SPC MD       -   162,220.      422,600.      MT  (+/- 180 meters Scaled)
 JV1005
 JV1005_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ497323(NAD 83)
 JV1005
 JV1005                          SUPERSEDED SURVEY CONTROL
 JV1005
 JV1005  NGVD 29 (11/26/84)   90.382  (m)          296.53   (f) ADJUSTED    1 2
 JV1005
 JV1005.Superseded values are not recommended for survey control.
 JV1005
 JV1005.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1005.See file dsdata.pdf to determine how the superseded data were derived.
 JV1005
 JV1005_MARKER: DD = SURVEY DISK
 JV1005_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1005_MARK LOGO: CGS+SS
 JV1005_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1005+STABILITY: SURFACE MOTION
 JV1005
 JV1005  HISTORY     - Date     Condition        Report By
 JV1005  HISTORY     - 1934     MONUMENTED       MDGS
 JV1005  HISTORY     - 1941     GOOD             CGS
 JV1005  HISTORY     - 1956     GOOD             CGS
 JV1005
 JV1005                          STATION DESCRIPTION
 JV1005
 JV1005'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV1005'AT FORT GEORGE G MEADE.
 JV1005'AT FORT GEORGE G. MEADE, ANNE ARUNDEL COUNTY, UNDER A 500,000
 JV1005'GALLON ELEVATED STEEL WATER TANK (KNOWN AS HUNT TANK), 22
 JV1005'FEET EAST OF THE STANDPIPE UNDER THE CENTER OF THE TANK, AND 6.6
 JV1005'FEET NORTHWEST OF THE NORTHWEST CORNER OF THE CONCRETE FOUNDATION
 JV1005'OF THE LEG JUST SOUTH OF THE EAST-AND-WEST AXIS OF THE TANK.  A
 JV1005'STATE SURVEY STANDARD DISK, SET IN THE TOP OF A CONCRETE POST.
 JV1005
 JV1005                          STATION RECOVERY (1956)
 JV1005
 JV1005'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956
 JV1005'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4648 ***********************************************************************
 AB4648  DESIGNATION -  HUNTER
 AB4648  PID         -  AB4648
 AB4648  STATE/COUNTY-  MD/CARROLL
 AB4648  COUNTRY     -  US
 AB4648  USGS QUAD   -  TANEYTOWN (2016)
 AB4648
 AB4648                         *CURRENT SURVEY CONTROL
 AB4648  ______________________________________________________________________
 AB4648* NAD 83(2011) POSITION- 39 42 33.36337(N) 077 07 34.64378(W)   ADJUSTED
 AB4648* NAD 83(2011) ELLIP HT-   122.550 (meters)        (06/27/12)   ADJUSTED
 AB4648* NAD 83(2011) EPOCH   -  2010.00
 AB4648* NAVD 88 ORTHO HEIGHT -   155.6   (meters)      510.    (feet) GPS OBS
 AB4648  ______________________________________________________________________
 AB4648  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4648  GEOID HEIGHT    -        -33.026 (meters)                     GEOID99
 AB4648  GEOID HEIGHT    -        -33.037 (meters)                     GEOID18
 AB4648  NAD 83(2011) X  -  1,094,739.150 (meters)                     COMP
 AB4648  NAD 83(2011) Y  - -4,789,980.826 (meters)                     COMP
 AB4648  NAD 83(2011) Z  -  4,053,282.993 (meters)                     COMP
 AB4648  LAPLACE CORR    -          4.58  (seconds)                    DEFLEC18
 AB4648
 AB4648  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4648  Standards:
 AB4648         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4648            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4648  -------------------------------------------------------------------
 AB4648  NETWORK    0.96   3.00           0.44   0.33   1.53     -0.03281014
 AB4648  -------------------------------------------------------------------
 AB4648  Click here for local accuracies and other accuracy information.
 AB4648
 AB4648.The horizontal coordinates were established by GPS observations
 AB4648.and adjusted by the National Geodetic Survey in June 2012.
 AB4648
 AB4648.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4648.been affixed to the stable North American tectonic plate. See 
 AB4648.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4648
 AB4648.The horizontal coordinates are valid at the epoch date displayed above
 AB4648.which is a decimal equivalence of Year/Month/Day.
 AB4648
 AB4648.The orthometric height was determined by GPS observations and a
 AB4648.high-resolution geoid model.
 AB4648
 AB4648.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4648.GEOID18 height accuracy estimate available here.
 AB4648
 AB4648.Click photographs - Photos may exist for this station.
 AB4648
 AB4648.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4648
 AB4648.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4648
 AB4648.The ellipsoidal height was determined by GPS observations
 AB4648.and is referenced to NAD 83.
 AB4648
 AB4648. The following values were computed from the NAD 83(2011) position.
 AB4648
 AB4648;                    North         East     Units Scale Factor Converg.
 AB4648;SPC MD       -   226,757.492   389,169.419   MT  1.00005565   -0 04 45.3
 AB4648;SPC MD       -   743,953.54  1,276,800.00   sFT  1.00005565   -0 04 45.3
 AB4648;UTM  18      - 4,397,650.969   317,725.363   MT  1.00000905   -1 21 31.8
 AB4648
 AB4648!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4648!SPC MD       -   0.99998077  x   1.00005565  =   1.00003642
 AB4648!UTM  18      -   0.99998077  x   1.00000905  =   0.99998982
 AB4648
 AB4648_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ1772597650(NAD 83)
 AB4648
 AB4648                          SUPERSEDED SURVEY CONTROL
 AB4648
 AB4648  NAD 83(2007)-  39 42 33.36372(N)    077 07 34.64440(W) AD(2002.00) 0
 AB4648  ELLIP H (02/10/07)  122.573  (m)                       GP(2002.00)    
 AB4648  ELLIP H (08/30/02)  122.527  (m)                       GP(       ) 4 2
 AB4648  NAD 83(1991)-  39 42 33.36276(N)    077 07 34.64509(W) AD(       ) 1
 AB4648  ELLIP H (07/03/96)  122.489  (m)                       GP(       ) 1 1
 AB4648  NAVD 88 (07/03/96)  155.5    (m)  GEOID93  model used  GPS OBS        
 AB4648
 AB4648.Superseded values are not recommended for survey control.
 AB4648
 AB4648.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4648.See file dsdata.pdf to determine how the superseded data were derived.
 AB4648
 AB4648_MARKER: DD = SURVEY DISK
 AB4648_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4648_STAMPING: HUNTER 1995
 AB4648_MARK LOGO: MD-013
 AB4648_PROJECTION: RECESSED 5 CENTIMETERS
 AB4648_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4648+STABILITY: SURFACE MOTION
 AB4648_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4648+SATELLITE: SATELLITE OBSERVATIONS - June 30, 2020
 AB4648
 AB4648  HISTORY     - Date     Condition        Report By
 AB4648  HISTORY     - 1995     MONUMENTED       MD-013
 AB4648  HISTORY     - 20070529 GOOD             GEOCAC
 AB4648  HISTORY     - 20100325 GOOD             GPSSS
 AB4648  HISTORY     - 20130215 GOOD             GEOCAC
 AB4648  HISTORY     - 20200630 GOOD             BASE9
 AB4648
 AB4648                          STATION DESCRIPTION
 AB4648
 AB4648'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4648'STATION IS LOCATED ABOUT 5 MI (8.0 KM) NORTH OF TANEYTOWN, ABOUT 12 MI
 AB4648'(19.3 KM) NORTHWEST OF WESTMINSTER AND ABOUT 1 MI (1.6 KM) SOUTH OF
 AB4648'THE PENNSYLVANIA STATE LINE. TO REACH STATION FROM THE INTERSECTION OF
 AB4648'MD ROUTE 140 (TANEYTOWN PIKE) AND MD ROUTE 194 (FRANCIS SCOTT KEY
 AB4648'HIGHWAY) GO NORTH ON MD ROUTE 194 FOR 4.5 MI (7.2 KM) TO THE STATION
 AB4648'ON THE RIGHT. STATION IS ALSO 0.45 MI (0.72 KM) NORTH OF THE
 AB4648'INTERSECTION OF MD ROUTE 194 AND STONE ROAD AND IS ALSO 0.8 MI (1.3
 AB4648'KM) SOUTH OF THE PENNSYLVANIA STATE LINE. STATION IS BETWEEN THE NEW
 AB4648'AND OLD MD ROUTE 194 AT THE HUNTER RESIDENCE. STATION MARK IS SET IN
 AB4648'THE TOP OF A 10 IN DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE
 AB4648'GROUND.IT IS 48 FT (14.6 M) EAST OF THE CENTERLINE OF THE ROAD, 42 FT
 AB4648'(12.8 M) NORTH OF THE CENTERLINE OF A DRIVEWAY LEADING EAST TO A RED
 AB4648'BRICK HOUSE NO.4915 AND 25 FT (7.6 M) NORTHWEST OF A TREE.
 AB4648
 AB4648                          STATION RECOVERY (2007)
 AB4648
 AB4648'RECOVERY NOTE BY GEOCACHING 2007 (RCF)
 AB4648'RECOVERED IN GOOD CONDITION.
 AB4648
 AB4648                          STATION RECOVERY (2010)
 AB4648
 AB4648'RECOVERY NOTE BY GPS SALES AND SERVICES 2010 (BB)
 AB4648'RECOVERED BY BARRY OF HANOVER LAND SERVICES, INC.
 AB4648
 AB4648                          STATION RECOVERY (2013)
 AB4648
 AB4648'RECOVERY NOTE BY GEOCACHING 2013 (DPB)
 AB4648'VISIBLE BUT ALMOST COVERED WITH DIRT AND GRASS, ABOUT AN INCH BELOW
 AB4648'THE LAWN SURFACE
 AB4648
 AB4648                          STATION RECOVERY (2020)
 AB4648
 AB4648'RECOVERY NOTE BY BASE 9 GEODETIC CONSULTING SERVICE 2020 (DRD)
 AB4648'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5697 ***********************************************************************
 HV5697  DESIGNATION -  HUNTING
 HV5697  PID         -  HV5697
 HV5697  STATE/COUNTY-  MD/TALBOT
 HV5697  COUNTRY     -  US
 HV5697  USGS QUAD   -  SAINT MICHAELS (2016)
 HV5697
 HV5697                         *CURRENT SURVEY CONTROL
 HV5697  ______________________________________________________________________
 HV5697* NAD 83(1991) POSITION- 38 46 27.97902(N) 076 09 52.98311(W)   ADJUSTED
 HV5697* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5697  ______________________________________________________________________
 HV5697  GEOID HEIGHT    -        -34.495 (meters)                     GEOID18
 HV5697  LAPLACE CORR    -         -4.19  (seconds)                    DEFLEC18
 HV5697  HORZ ORDER      -  THIRD
 HV5697
 HV5697.The horizontal coordinates were established by classical geodetic methods
 HV5697.and adjusted by the National Geodetic Survey in January 1992.
 HV5697
 HV5697.The orthometric height was scaled from a topographic map.
 HV5697
 HV5697.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5697.GEOID18 height accuracy estimate available here.
 HV5697
 HV5697.Click photographs - Photos may exist for this station.
 HV5697
 HV5697.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5697
 HV5697. The following values were computed from the NAD 83(1991) position.
 HV5697
 HV5697;                    North         East     Units Scale Factor Converg.
 HV5697;SPC MD       -   123,299.190   472,582.150   MT  0.99995141   +0 31 27.3
 HV5697;SPC MD       -   404,524.09  1,550,463.27   sFT  0.99995141   +0 31 27.3
 HV5697;UTM  18      - 4,292,390.345   398,824.116   MT  0.99972605   -0 43 46.1
 HV5697
 HV5697!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5697!SPC MD       -   1.00000529  x   0.99995141  =   0.99995670
 HV5697!UTM  18      -   1.00000529  x   0.99972605  =   0.99973134
 HV5697
 HV5697:                Primary Azimuth Mark                     Grid Az
 HV5697:SPC MD       -  SPREE                                    078 37 07.9
 HV5697:UTM  18      -  SPREE                                    079 52 21.3
 HV5697
 HV5697_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9882492390(NAD 83)
 HV5697
 HV5697|---------------------------------------------------------------------|
 HV5697| PID    Reference Object                     Distance      Geod. Az  |
 HV5697|                                                           dddmmss.s |
 HV5697| HV5700 SPREE                               475.252 METERS 0790835.2 |
 HV5697|---------------------------------------------------------------------|
 HV5697
 HV5697                          SUPERSEDED SURVEY CONTROL
 HV5697
 HV5697  NAD 83(1986)-  38 46 27.97468(N)    076 09 52.99713(W) AD(       ) 3
 HV5697  NAD 27      -  38 46 27.50100(N)    076 09 54.20300(W) AD(       ) 3
 HV5697  USSD        -  38 46 27.88100(N)    076 09 53.97000(W) AD(       ) 3
 HV5697
 HV5697.Superseded values are not recommended for survey control.
 HV5697
 HV5697.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5697.See file dsdata.pdf to determine how the superseded data were derived.
 HV5697
 HV5697_MARKER: H = DRILL HOLE
 HV5697_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5697_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5697
 HV5697  HISTORY     - Date     Condition        Report By
 HV5697  HISTORY     - 1909     MONUMENTED       MDSFC
 HV5697  HISTORY     - 1940     GOOD             CGS
 HV5697  HISTORY     - 1961     MARK NOT FOUND   CGS
 HV5697
 HV5697                          STATION DESCRIPTION
 HV5697
 HV5697'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HV5697'STATION IS ON THE NORTHWESTERN SHORE OF MILES RIVER, ON E SIDE OF
 HV5697'ENTRANCE TO HUNTING CREEK, AND 1/2 MILE NE OF LONG POINT, IN S
 HV5697'CORNER OF CULTIVATED FIELD, ABOUT 5 FEET ABOVE HIGH WATER, 2
 HV5697'YARDS NW OF EDGE OF BANK WITH BUSHES, 6 YARDS W OF EDGE OF BANK, 7
 HV5697'YARDS NE OF POINT OF BANK, 50 YARDS N OF EDGE OF LOWER LAND, AND
 HV5697'200 YARDS S OF LARGE BARN WITH CUPOLA.  STATION MARK IS A HOLE IN
 HV5697'THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY STANDARD
 HV5697'MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP
 HV5697'PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE
 HV5697'COUNTER-SUNK IN TOP OF POST.  SUBSURFACE MARK IS CENTER OF 2-INCH
 HV5697'DRAINTILE PIPE, BURIED WITH TOP 2 INCHES BELOW THE BASE OF THE
 HV5697'MONUMENT.  DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE
 HV5697'ARE AS FOLLOWS--SPINDLE ON BARN CUPOLA, 1 1/2 MILES, S 4 DEG 12
 HV5697'MIN W.  LEFT PEAK OF BUILDING NEAR RAILROAD BRIDGE.  1-1/2 MILES,
 HV5697'S 18 DEG 55 MIN W.  LEFT TREE ON LONG POINT, 1/2 MILE, S 53 DEG 26
 HV5697'MIN W.  NEAR PEAK OF LARGE BUILDING, 1-1/2 MILES, N 40 DEG 16
 HV5697'MIN W.  SPINDLE ON BARN CUPOLA, 200 YARDS, N 9 DEG 22 MIN W. PEAK
 HV5697'OF NEAR GABLE ON HOUSE, 1/4 MILE, N 56 DEG 36 MIN E.  NAIL IN
 HV5697'BLAZE IN 3-INCH CHERRY TREE, 7.98 METERS (26.18 FEET), N 58 DEG 30
 HV5697'MIN E. LEFT PEAK OF HOUSE, 1 MILE, N 82 DEG 51 MIN E.  NEAR PEAK
 HV5697'OF LARGE BARN, 3/4 MILE, S 54 DEG 16 MIN E.  NAIL IN BLAZE IN
 HV5697'6-INCH PERSIMMON TREE, 5.87 METERS (19.26 FEET), S 0 DEG 33 MIN E.
 HV5697
 HV5697                          STATION RECOVERY (1940)
 HV5697
 HV5697'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (LWS)
 HV5697'STATION IS ON THE NORTHWESTERN SHORE OF MILES RIVER, ON THE E
 HV5697'SIDE OF ENTRANCE TO HUNTING CREEK.  MARK RECOVERED AS DESCRIBED,
 HV5697'EXCEPT THAT CULTIVATED FIELD IS NOW A LAWN.
 HV5697'
 HV5697'THE TOP OF MARK PROJECTS 12 INCHES ABOVE THE SURFACE OF GROUND
 HV5697'AND IS CRACKED BUT FIRMLY IN PLACE.
 HV5697
 HV5697                          STATION RECOVERY (1961)
 HV5697
 HV5697'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HV5697'STATION NOT RECOVERED AFTER A THOROUGH SEARCH OF THE AREA.  THERE
 HV5697'ARE NO REFERENCE TREES LEFT AND THERE IS EVIDENCE THAT MANY TREES
 HV5697'HAVE BEEN REMOVED FROM THE AREA RECENTLY.  IT IS BELIEVED THAT THE
 HV5697'STATION SURFACE MARK WAS DESTROYED AT THIS TIME.  THE PUBLISHED
 HV5697'DESCRIPTION IS INADEQUATE FOR RECOVERY OF THE UNDERGROUND MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4373 ***********************************************************************
 JV4373  DESIGNATION -  HUNTING HILL 2
 JV4373  PID         -  JV4373
 JV4373  STATE/COUNTY-  MD/MONTGOMERY
 JV4373  COUNTRY     -  US
 JV4373  USGS QUAD   -  ROCKVILLE (2016)
 JV4373
 JV4373                         *CURRENT SURVEY CONTROL
 JV4373  ______________________________________________________________________
 JV4373* NAD 83(1993) POSITION- 39 05 04.31636(N) 077 11 53.11054(W)   ADJUSTED
 JV4373* NAVD 88 ORTHO HEIGHT -   156.93  (+/-2cm)      514.9   (feet) VERTCON3
 JV4373  ______________________________________________________________________
 JV4373  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV4373  LAPLACE CORR    -         -0.14  (seconds)                    DEFLEC18
 JV4373  HORZ ORDER      -  FIRST
 JV4373  VERT ORDER      -  THIRD ? (See Below)
 JV4373
 JV4373.The horizontal coordinates were established by classical geodetic methods
 JV4373.and adjusted by the National Geodetic Survey in November 1994.
 JV4373
 JV4373.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4373.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4373
 JV4373.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4373.GEOID18 height accuracy estimate available here.
 JV4373
 JV4373.The vertical order pertains to the NGVD 29 superseded value.
 JV4373
 JV4373.Click photographs - Photos may exist for this station.
 JV4373
 JV4373.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4373
 JV4373. The following values were computed from the NAD 83(1993) position.
 JV4373
 JV4373;                    North         East     Units Scale Factor Converg.
 JV4373;SPC MD       -   157,408.836   382,861.696   MT  0.99995646   -0 07 27.6
 JV4373;SPC MD       -   516,432.16  1,256,105.41   sFT  0.99995646   -0 07 27.6
 JV4373;UTM  18      - 4,328,457.137   309,880.876   MT  1.00004508   -1 23 10.4
 JV4373
 JV4373!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4373!SPC MD       -   0.99998035  x   0.99995646  =   0.99993681
 JV4373!UTM  18      -   0.99998035  x   1.00004508  =   1.00002543
 JV4373
 JV4373:                Primary Azimuth Mark                     Grid Az
 JV4373:SPC MD       -  ROCKVILLE MONTGOMERY SQ TANK             143 21 19.4
 JV4373:UTM  18      -  ROCKVILLE MONTGOMERY SQ TANK             144 37 02.2
 JV4373
 JV4373_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0988028457(NAD 83)
 JV4373
 JV4373|---------------------------------------------------------------------|
 JV4373| PID    Reference Object                     Distance      Geod. Az  |
 JV4373|                                                           dddmmss.s |
 JV4373| JV2859 HUNT                                 53.908 METERS 07446     |
 JV4373| JV4377 ROCKVILLE W MUN TANK                APPROX. 3.3 KM 0833205.3 |
 JV4373| JV4344 ROCKVILLE E MUN TANK                APPROX. 5.0 KM 0925720.8 |
 JV4373| JV4354 ROCKVILLE ST MARYS CATH CH          APPROX. 4.6 KM 0933954.7 |
 JV4373| JV4387 ROCKVILLE MONTGOMERY SQ TANK        APPROX. 3.4 KM 1431351.8 |
 JV4373| JV4360 BETHESDA CABIN JOHN MICROWAVE       APPROX. 7.5 KM 1431654.8 |
 JV4373| CK7522 HUNTING HILL 2 RM 3                  38.453 METERS 19916     |
 JV4373| JV4372 ROCKVILLE HUNTING HILL TANK          38.250 METERS 26849     |
 JV4373| CK7523 HUNTING HILL 2 RM 4                   3.421 METERS 33719     |
 JV4373|---------------------------------------------------------------------|
 JV4373
 JV4373                          SUPERSEDED SURVEY CONTROL
 JV4373
 JV4373  NAD 83(1991)-  39 05 04.31594(N)    077 11 53.11119(W) AD(       ) 1
 JV4373  NAD 83(1986)-  39 05 04.31598(N)    077 11 53.12104(W) AD(       ) 1
 JV4373  NAD 27      -  39 05 03.92581(N)    077 11 54.18356(W) AD(       ) 1
 JV4373  NGVD 29             157.15   (m)          515.6    (f) LEVELING    3  
 JV4373
 JV4373.Superseded values are not recommended for survey control.
 JV4373
 JV4373.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4373.See file dsdata.pdf to determine how the superseded data were derived.
 JV4373
 JV4373_MARKER: DS = TRIANGULATION STATION DISK
 JV4373_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4373_STAMPING: HUNTING HILL 2 1969
 JV4373_MARK LOGO: CGS
 JV4373_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4373+STABILITY: SURFACE MOTION
 JV4373
 JV4373  HISTORY     - Date     Condition        Report By
 JV4373  HISTORY     - 1969     MONUMENTED       CGS
 JV4373
 JV4373                          STATION DESCRIPTION
 JV4373
 JV4373'DESCRIBED BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4373'THE STATION IS ABOUT 3 MILES WEST OF ROCKVILLE, ON A HILL WHICH IS
 JV4373'THE HIGHEST POINT IN THE IMMEDIATE VICINITY AND ON PROPERTY OF THE
 JV4373'CITY OF ROCKVILLE.
 JV4373'
 JV4373'TO REACH THE STATION FROM WHERE STATE HIGHWAY 28 CROSSES INTERSTATE
 JV4373'HIGHWAY 70 S, GO WESTERLY ON STATE HIGHWAY 28 FOR 1.4 MILES TO A
 JV4373'SIDE ROAD LEFT.  TURN LEFT AND GO SOUTH ON GLEN MILL ROAD FOR 0.6
 JV4373'MILE TO A LOCKED GATE ON THE RIGHT AND THE STATION.
 JV4373'
 JV4373'THE STATION MARK IS A STANDARD DISK, STAMPED HUNTING HILL 2 1969, SET
 JV4373'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT IS
 JV4373'FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 57.88 FEET
 JV4373'EAST-SOUTHEAST OF THE EAST EDGE OF THE HUNTING HILL WATER TANK,
 JV4373'55.4 FEET NORTHWEST OF A CYCLONE FENCE, 45.1 FEET SOUTH-SOUTHWEST
 JV4373'OF THE NORTHWEST CORNER OF A CONCRETE VALVE HOUSE, 44.9 FEET NORTH
 JV4373'OF A POWER LINE POLE, 44.4 FEET SOUTHWEST OF THE SOUTHEAST
 JV4373'CORNER OF THE CONCRETE VALVE HOUSE AND 28.0 FEET NORTHWEST OF THE
 JV4373'CENTER LINE OF A PAVED DRIVEWAY.  THE UNDERGROUND MARK IS 40 INCHES
 JV4373'BELOW THE GROUND SURFACE.
 JV4373'
 JV4373'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED HUNTING HILL 2 NO 3
 JV4373'1969, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 JV4373'DIAMETER, THAT IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 40.0
 JV4373'FEET NORTHWEST OF THE CYCLONE FENCE, 32.8 FEET
 JV4373'SOUTH-SOUTHEAST OF THE CENTER LINE OF THE PAVED DRIVE, 3.9 FEET
 JV4373'EAST OF A 10 INCH TREE AND ABOUT 5 FEET LOWER IN ELEVATION THAN
 JV4373'THE STATION.
 JV4373'
 JV4373'REFERENCE MARK 4 IS A STANDARD DISK, STAMPED HUNTING HILL 2 NO 4
 JV4373'1969, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 JV4373'DIAMETER, THAT IS FLUSH WITH THE SURFACE OF THE GROUND.  IT IS 76.9
 JV4373'FEET NORTH-NORTHWEST OF THE NORTHWEST CORNER OF THE CONCRETE
 JV4373'VALVE HOUSE, 17.5 FEET EAST-NORTHEAST OF A 36 INCH OAK TREE, 6.0
 JV4373'FEET SOUTH EDGE OF THE WOODS AND ABOUT THE SAME IN ELEVATION
 JV4373'AS THE STATION.
 JV4373'
 JV4373'HUNT 1956 IS A STANDARD DISK, STAMPED HUNT 1956, SET IN THE TOP OF A
 JV4373'12 INCH SQUARE CONCRETE POST THAT PROJECTS 3 INCHES ABOVE THE
 JV4373'GROUND.  IT IS 25.5 FEET EAST-SOUTHEAST OF THE CENTERLINE OF GLEN
 JV4373'MILL ROAD, 25.5 FEET NORTH-NORTHEAST OF A POWER LINE POLE AND 19.2
 JV4373'FEET WEST-SOUTHWEST OF POWER LINE POLE M 4731.
 JV4373'
 JV4373'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK.
 JV4373'
 JV4373'RESULT OF A SECOND ORDER TRAVERSE.
 JV4373'
 JV4373'THE DISTANCE BETWEEN THE REFERENCE MARKS WAS NOT MEASURED DUE TO
 JV4373'OBSTRUCTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4351 ***********************************************************************
 JV4351  DESIGNATION -  HUNTING HILL WSSD 1924
 JV4351  PID         -  JV4351
 JV4351  STATE/COUNTY-  MD/MONTGOMERY
 JV4351  COUNTRY     -  US
 JV4351  USGS QUAD   -  ROCKVILLE (2016)
 JV4351
 JV4351                         *CURRENT SURVEY CONTROL
 JV4351  ______________________________________________________________________
 JV4351* NAD 83(1993) POSITION- 39 05 06.61414(N) 077 11 52.86611(W)   ADJUSTED
 JV4351* NAVD 88 ORTHO HEIGHT -   152.    (meters)      499.    (feet) SCALED
 JV4351  ______________________________________________________________________
 JV4351  GEOID HEIGHT    -        -31.703 (meters)                     GEOID18
 JV4351  LAPLACE CORR    -         -0.13  (seconds)                    DEFLEC18
 JV4351  HORZ ORDER      -  SECOND
 JV4351
 JV4351.The horizontal coordinates were established by classical geodetic methods
 JV4351.and adjusted by the National Geodetic Survey in November 1994.
 JV4351
 JV4351.The orthometric height was scaled from a topographic map.
 JV4351
 JV4351.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4351.GEOID18 height accuracy estimate available here.
 JV4351
 JV4351.Click photographs - Photos may exist for this station.
 JV4351
 JV4351.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4351
 JV4351. The following values were computed from the NAD 83(1993) position.
 JV4351
 JV4351;                    North         East     Units Scale Factor Converg.
 JV4351;SPC MD       -   157,479.680   382,867.724   MT  0.99995650   -0 07 27.4
 JV4351;SPC MD       -   516,664.58  1,256,125.19   sFT  0.99995650   -0 07 27.4
 JV4351;UTM  18      - 4,328,527.836   309,888.463   MT  1.00004505   -1 23 10.4
 JV4351
 JV4351!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4351!SPC MD       -   0.99998116  x   0.99995650  =   0.99993766
 JV4351!UTM  18      -   0.99998116  x   1.00004505  =   1.00002621
 JV4351
 JV4351:                Primary Azimuth Mark                     Grid Az
 JV4351:SPC MD       -  ROCKVILLE MUN STANDPIPE                  093 50 31.6
 JV4351:UTM  18      -  ROCKVILLE MUN STANDPIPE                  095 06 14.6
 JV4351
 JV4351_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0988828527(NAD 83)
 JV4351
 JV4351|---------------------------------------------------------------------|
 JV4351| PID    Reference Object                     Distance      Geod. Az  |
 JV4351|                                                           dddmmss.s |
 JV4351| JV4353 ROCKVILLE MUN STANDPIPE             APPROX. 5.0 KM 0934304.2 |
 JV4351|---------------------------------------------------------------------|
 JV4351
 JV4351                          SUPERSEDED SURVEY CONTROL
 JV4351
 JV4351  NAD 83(1991)-  39 05 06.61384(N)    077 11 52.86680(W) AD(       ) 2
 JV4351  NAD 83(1986)-  39 05 06.61392(N)    077 11 52.87525(W) AD(       ) 2
 JV4351  NAD 27      -  39 05 06.22354(N)    077 11 53.93947(W) AD(       ) 2
 JV4351  USSD        -  39 05 06.53900(N)    077 11 53.74400(W) AD(       ) 3
 JV4351
 JV4351.Superseded values are not recommended for survey control.
 JV4351
 JV4351.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4351.See file dsdata.pdf to determine how the superseded data were derived.
 JV4351
 JV4351
 JV4351  HISTORY     - Date     Condition        Report By
 JV4351  HISTORY     - 1924     MONUMENTED       CGS
 JV4351  HISTORY     - 1956     SEE DESCRIPTION  WSSC
 JV4351  HISTORY     - 1957     GOOD             PEPCO
 JV4351
 JV4351                          STATION DESCRIPTION
 JV4351
 JV4351'DESCRIBED BY WASH SUBURB SAN COMM 1956 (MLC)
 JV4351'THE STATION AND REFERENCE MARKS 1 AND 5 WERE RECOVERED AND FOUND
 JV4351'TO BE IN GOOD CONDITION.
 JV4351'
 JV4351'THE STATION MARK IS NOW ABOUT 8 IN. BELOW THE SURFACE OF A
 JV4351'DIRT FLOOR IN THE PRIVATE GREENHOUSE BELONGING TO MR. SAM
 JV4351'WALKER 111, WHO GAVE PERMISSION TO MAKE A TRAVERSE CONNECTION
 JV4351'TO STATION HUNT 1956, WHICH IS LOCATED NEARBY ON THE E SIDE OF
 JV4351'GLEN MILL ROAD AT THE SUMMIT OF THE HILL.
 JV4351'
 JV4351'THE STATION AND REFERENCE MARKS WILL PROBABLY REMAIN IN GOOD
 JV4351'CONDITION FOR MANY YEARS, BUT ITS USE SHOULD BE LIMITED SO THAT
 JV4351'IT DOES NOT BECOME A NUISANCE TO MR. WALKER.
 JV4351'
 JV4351'SEE DESCRIPTION TO HUNT 1956.
 JV4351
 JV4351                          STATION RECOVERY (1957)
 JV4351
 JV4351'RECOVERY NOTE BY POTOMAC EDISON POWER COMPANY 1957
 JV4351'STATION, AZIMUTH AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5062 ***********************************************************************
 JV5062  DESIGNATION -  HUNTINGFIELD BANK
 JV5062  PID         -  JV5062
 JV5062  STATE/COUNTY-  MD/KENT
 JV5062  COUNTRY     -  US
 JV5062  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5062
 JV5062                         *CURRENT SURVEY CONTROL
 JV5062  ______________________________________________________________________
 JV5062* NAD 83(1991) POSITION- 39 07 02.02192(N) 076 14 52.34501(W)   ADJUSTED
 JV5062* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5062  ______________________________________________________________________
 JV5062  GEOID HEIGHT    -        -33.388 (meters)                     GEOID18
 JV5062  LAPLACE CORR    -         -1.94  (seconds)                    DEFLEC18
 JV5062  HORZ ORDER      -  THIRD
 JV5062
 JV5062.The horizontal coordinates were established by classical geodetic methods
 JV5062.and adjusted by the National Geodetic Survey in January 1992.
 JV5062
 JV5062.The orthometric height was scaled from a topographic map.
 JV5062
 JV5062.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5062.GEOID18 height accuracy estimate available here.
 JV5062
 JV5062.Click photographs - Photos may exist for this station.
 JV5062
 JV5062.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5062
 JV5062. The following values were computed from the NAD 83(1991) position.
 JV5062
 JV5062;                    North         East     Units Scale Factor Converg.
 JV5062;SPC MD       -   161,287.858   465,042.933   MT  0.99995870   +0 28 19.4
 JV5062;SPC MD       -   529,158.58  1,525,728.36   sFT  0.99995870   +0 28 19.4
 JV5062;UTM  18      - 4,330,526.906   392,121.208   MT  0.99974330   -0 47 14.5
 JV5062
 JV5062!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5062!SPC MD       -   1.00000528  x   0.99995870  =   0.99996398
 JV5062!UTM  18      -   1.00000528  x   0.99974330  =   0.99974858
 JV5062
 JV5062:                Primary Azimuth Mark                     Grid Az
 JV5062:SPC MD       -  BEACH POINT                              176 51 30.3
 JV5062:UTM  18      -  BEACH POINT                              178 07 04.2
 JV5062
 JV5062_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9212130526(NAD 83)
 JV5062
 JV5062|---------------------------------------------------------------------|
 JV5062| PID    Reference Object                     Distance      Geod. Az  |
 JV5062|                                                           dddmmss.s |
 JV5062| JV5094 BEACH POINT                         APPROX. 9.9 KM 1771949.7 |
 JV5062|---------------------------------------------------------------------|
 JV5062
 JV5062                          SUPERSEDED SURVEY CONTROL
 JV5062
 JV5062  NAD 83(1986)-  39 07 02.01633(N)    076 14 52.35594(W) AD(       ) 3
 JV5062  NAD 27      -  39 07 01.63200(N)    076 14 53.52200(W) AD(       ) 3
 JV5062  USSD        -  39 07 01.98400(N)    076 14 53.35000(W) AD(       ) 3
 JV5062
 JV5062.Superseded values are not recommended for survey control.
 JV5062
 JV5062.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5062.See file dsdata.pdf to determine how the superseded data were derived.
 JV5062
 JV5062_MARKER: N = NAIL
 JV5062_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV5062_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV5062
 JV5062  HISTORY     - Date     Condition        Report By
 JV5062  HISTORY     - 1896     MONUMENTED       CGS
 JV5062  HISTORY     - 1942     MARK NOT FOUND   CGS
 JV5062
 JV5062                          STATION DESCRIPTION
 JV5062
 JV5062'DESCRIBED BY COAST AND GEODETIC SURVEY 1896 (JAF)
 JV5062'ON EASTERN SHORE OF CHESAPEAKE BAY, ON PENINSULA S OF ENTRANCE
 JV5062'TO ROCK HALL HARBOR AND W OF HUNTINGFIELD CREEK.  STATION IS
 JV5062'14 FEET E OF EDGE OF HIGHEST POINT OF HUNTINGFIELD BANK.  IT
 JV5062'IS MARKED BY NAIL IN CEMENT-FILLED TILE PIPE.  TOP OF PIPE,
 JV5062'6 INCHES BELOW SURFACE, IS SURROUNDED BY BLOCK OF CONCRETE
 JV5062'BEARING LEGEND U.S.C.S.--1896.  FROM STATION, MAGNETIC BEARING
 JV5062'OF TALL SMOKESTACK OF LEARYS SAWMILL ON W SHORE OF GRAYS INN
 JV5062'CREEK IS S 78 DEG 23 MIN E.  MAGNETIC BEARING OF LINE TO LONE
 JV5062'CHERRY TREE ABREAST OF W, OF PEACH ORCHARD IS S 31 DEG 36
 JV5062'MIN E.  MAGNETIC BEARING OF LINE TANGENT TO EDGE OF WOODLAND
 JV5062'JUST S OF STATION IN BOTTOM, NEAR SHORE, IS S 23 DEG 30 MIN
 JV5062'E.  MAGNETIC BEARING OF W CHIMNEY OF OLD COLONIAL BRICK
 JV5062'HOUSE, N 48 DEG 28 MIN E.
 JV5062
 JV5062                          STATION RECOVERY (1942)
 JV5062
 JV5062'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV5062'STATION PLOTS IN WATER AND MAY BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0345 ***********************************************************************
 JV0345  DESIGNATION -  HUNTINGFIELD BANK TWR 15
 JV0345  PID         -  JV0345
 JV0345  STATE/COUNTY-  MD/KENT
 JV0345  COUNTRY     -  US
 JV0345  USGS QUAD   -  LANGFORD CREEK (2016)
 JV0345
 JV0345                         *CURRENT SURVEY CONTROL
 JV0345  ______________________________________________________________________
 JV0345* NAD 83(1991) POSITION- 39 06 36.91556(N) 076 14 36.66274(W)   ADJUSTED
 JV0345* NAVD 88 ORTHO HEIGHT -     7.480 (meters)       24.54  (feet) ADJUSTED
 JV0345  ______________________________________________________________________
 JV0345  GEOID HEIGHT    -        -33.406 (meters)                     GEOID18
 JV0345  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 JV0345  DYNAMIC HEIGHT  -          7.476 (meters)       24.53  (feet) COMP
 JV0345  MODELED GRAVITY -    980,101.8   (mgal)                       NAVD 88
 JV0345
 JV0345  HORZ ORDER      -  FIRST
 JV0345  VERT ORDER      -  SECOND    CLASS 0
 JV0345
 JV0345.The horizontal coordinates were established by classical geodetic methods
 JV0345.and adjusted by the National Geodetic Survey in January 1992.
 JV0345
 JV0345.The orthometric height was determined by differential leveling and
 JV0345.adjusted by the NATIONAL GEODETIC SURVEY
 JV0345.in June 1991.
 JV0345
 JV0345.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0345.GEOID18 height accuracy estimate available here.
 JV0345
 JV0345.Click photographs - Photos may exist for this station.
 JV0345
 JV0345.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV0345
 JV0345.The dynamic height is computed by dividing the NAVD 88
 JV0345.geopotential number by the normal gravity value computed on the
 JV0345.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0345.degrees latitude (g = 980.6199 gals.).
 JV0345
 JV0345.The modeled gravity was interpolated from observed gravity values.
 JV0345
 JV0345. The following values were computed from the NAD 83(1991) position.
 JV0345
 JV0345;                    North         East     Units Scale Factor Converg.
 JV0345;SPC MD       -   160,516.794   465,426.058   MT  0.99995820   +0 28 29.3
 JV0345;SPC MD       -   526,628.85  1,526,985.33   sFT  0.99995820   +0 28 29.3
 JV0345;UTM  18      - 4,329,747.776   392,487.214   MT  0.99974233   -0 47 04.2
 JV0345
 JV0345!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV0345!SPC MD       -   1.00000407  x   0.99995820  =   0.99996227
 JV0345!UTM  18      -   1.00000407  x   0.99974233  =   0.99974640
 JV0345
 JV0345:                Primary Azimuth Mark                     Grid Az
 JV0345:SPC MD       -  HUNTINGFIELD BANK TWR 15 RM 2 AZ         156 03 51.3
 JV0345:UTM  18      -  HUNTINGFIELD BANK TWR 15 RM 2 AZ         157 19 24.8
 JV0345
 JV0345_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9248729747(NAD 83)
 JV0345
 JV0345|---------------------------------------------------------------------|
 JV0345| PID    Reference Object                     Distance      Geod. Az  |
 JV0345|                                                           dddmmss.s |
 JV0345| CA9549 HUNTINGFIELD BANK TWR 15 RM          49.430 METERS 07107     |
 JV0345| CA9550 HUNTINGFIELD BANK TWR 15 RM 2 AZ                   1563220.6 |
 JV0345| CA9548 HUNTINGFIELD BANK TWR 15 RM 3        21.885 METERS 30540     |
 JV0345|---------------------------------------------------------------------|
 JV0345
 JV0345                          SUPERSEDED SURVEY CONTROL
 JV0345
 JV0345  NAD 83(1986)-  39 06 36.90984(N)    076 14 36.67367(W) AD(       ) 1
 JV0345  NAD 27      -  39 06 36.51300(N)    076 14 37.83800(W) AD(       ) 1
 JV0345  USSD        -  39 06 36.88300(N)    076 14 37.67200(W) AD(       ) 3
 JV0345  NGVD 29               7.80   (m)           25.6    (f) LEVELING    3  
 JV0345  NGVD 29 (11/26/84)    7.727  (m)           25.35   (f) ADJUSTED    2 0
 JV0345
 JV0345.Superseded values are not recommended for survey control.
 JV0345
 JV0345.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0345.See file dsdata.pdf to determine how the superseded data were derived.
 JV0345
 JV0345_MARKER: DS = TRIANGULATION STATION DISK
 JV0345_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV0345_MARK LOGO: CGS
 JV0345_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0345+STABILITY: SURFACE MOTION
 JV0345
 JV0345  HISTORY     - Date     Condition        Report By
 JV0345  HISTORY     - 1918     MONUMENTED       CGS
 JV0345  HISTORY     - 1932     GOOD             CGS
 JV0345  HISTORY     - 1933     GOOD             CGS
 JV0345  HISTORY     - 1938     GOOD             CGS
 JV0345  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV0345  HISTORY     - 1964     MARK NOT FOUND   CGS
 JV0345  HISTORY     - 1964     GOOD             CGS
 JV0345  HISTORY     - 19901212 MARK NOT FOUND   USPSQD
 JV0345
 JV0345                          STATION DESCRIPTION
 JV0345
 JV0345'DESCRIBED BY COAST AND GEODETIC SURVEY 1918 (EDB)
 JV0345'STATION IS ON EASTERN SHORE OF CHESAPEAKE BAY, NEARLY 1 MILE S OF
 JV0345'EXTREME END OF HUNTINGFIELD POINT, IN AN OPEN FIELD, ON THE SECOND
 JV0345'BLUFF BACK FROM SHORE LINE, 85 METERS FROM SHORE LINE, AND 75
 JV0345'METERS FROM EDGE OF BLUFF.
 JV0345'
 JV0345'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 JV0345'CONCRETE.  THE UNDERGROUND MARK
 JV0345'IS AN IRON NAIL SET IN CONCRETE.
 JV0345'
 JV0345'THE REFERENCE MARK IS BACK IN FIELD, 49.430 METERS (162.17 FEET)
 JV0345'FROM STATION N 71 DEG 07 MIN E.  THE AZIMUTH TO E GABLE
 JV0345'OF FISHERMANS SHANTY ON SWAN POINT IS N 40 DEG 04 MIN W.  AND TO W
 JV0345'CHIMNEY OF FARMHOUSE, DISTANT 1/4 MILE, N 60 DEG 12 MIN E.
 JV0345'
 JV0345'A 40-FOOT OBSERVATION TOWER WAS BUILT OVER THIS STATION.
 JV0345
 JV0345                          STATION RECOVERY (1932)
 JV0345
 JV0345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (JAB)
 JV0345'STATION IS ON THE EASTERN SHORE OF CHESAPEAKE BAY, NEARLY 1 MILE
 JV0345'S OF EXTREME END OF HUNTINGFIELD POINT, IN AN OPEN FIELD, ON THE
 JV0345'CREST OF A HILL, 55 METERS ENE OF THE EDGE OF A 20-FOOT BLUFF ALONG
 JV0345'THE SHORE LINE.  NO SEARCH WAS MADE FOR SUBSURFACE MARK.
 JV0345'
 JV0345'STATION MARK WAS FOUND AS DESCRIBED AND IN GOOD CONDITION.  THE
 JV0345'REFERENCE MARK, TOP BROKEN OFF, WAS FOUND IN THE CORRECT DISTANCE
 JV0345'AND AZIMUTH.
 JV0345'
 JV0345'THE IMPRESSION OF THE BOTTOM OF THE SHAFT OF THE DISK WAS STILL
 JV0345'VISIBLE.  THE REFERENCE MARK WAS RECAPPED WITH CONCRETE AND A
 JV0345'NEW BRONZE DISK INSERTED IN PLACE.  A WIRE FENCE RUNS IN AN E
 JV0345'AND W DIRECTION, 12 METERS S OF STATION MARK, AND 17 METERS S OF
 JV0345'REFERENCE MARK.  WEST CHIMNEY OF FARMHOUSE DISTANT 1/4 MILE
 JV0345'S 60 DEG 12 MIN W. CHECKS.
 JV0345'
 JV0345'THE 40-FOOT OBSERVATION TOWER NOW OVER THE STATION IS LOCALLY
 JV0345'REPORTED TO HAVE BEEN COMPLETELY REBUILT IN 1929 OR 1930.  THE
 JV0345'FOUR LEGS HAVE HEAVY CONCRETE FOOTINGS ABOUT 3 FEET SQUARE.  THE
 JV0345'APEX OF THE PYRAMIDAL ROOF IS ECCENTRIC.  FROM THE STATION THE
 JV0345'APEX OF THE TOWER IS DISTANT 0.063 METER, S 84 DEG E.
 JV0345
 JV0345                          STATION RECOVERY (1933)
 JV0345
 JV0345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (RDH)
 JV0345'THIS IS A SECOND-ORDER STATION.  STATION IS A STANDARD STATION
 JV0345'MARK SET IN A SQUARE CONCRETE BLOCK, 50
 JV0345'PACES E OF BLUFF AND 12 PACES N OF FENCE, UNDER AN ARMY OBSERVATION
 JV0345'TOWER.
 JV0345'
 JV0345'REFERENCE MARK NO.2 IS A STANDARD REFERENCE MARK DISK SET IN A
 JV0345'SQUARE CONCRETE BLOCK, 25 PACES E OF
 JV0345'FACE OF BLUFF AND 1 FOOT N OF FENCE ENCLOSING SOME OLD TENANT
 JV0345'HOUSES, AND ABOUT 1/4 MILE S OF STATION.
 JV0345'
 JV0345'REFERENCE MARK NO. 3 IS A STANDARD REFERENCE MARK DISK SET IN
 JV0345'A SQUARE CONCRETE BLOCK.  IT IS LOCATED
 JV0345'40 PACES E OF THE FACE OF BLUFF, AND IN THE EDGE OF A CULTIVATED
 JV0345'PLOT AROUND THE ARMY TOWER.
 JV0345'
 JV0345'REFERENCE MARK 1918 (NOT STAMPED) IS A STANDARD REFERENCE MARK
 JV0345'DISK SET IN A SQUARE CONCRETE BLOCK FLUSH WITH GROUND, AS DESCRIBED
 JV0345'IN , AND 12 PACES N OF A FENCE IN A CULTIVATED FIELD.
 JV0345'
 JV0345'TO REACH STATION FROM ROCK HALL AT THE JUNCTION OF PAVED
 JV0345'HIGHWAYS AND SIGN READING FAIR LEE 7 MILES-CHESTERTOWN 13 MILES.  GO
 JV0345'S ON 7-FOOT PAVED ROAD CALLED THE EAST NECK ISLAND ROAD 2.1 MILES
 JV0345'TO THE SIGN OF THE N BRICK GATEPOST READING HUNTINGFIELD FARM,
 JV0345'TURN RIGHT GO 0.35 MILE TO FARM BUILDINGS, TURN RIGHT IN LANE
 JV0345'BEYOND BARN AND SHEDS, GO 0.10 MILE TO GATE, TURN LEFT ALONG N
 JV0345'SIDE OF FENCE TO ARMY TOWER.  TRUCK CAN BE DRIVEN TO THE STATION
 JV0345'IN GOOD WEATHER.
 JV0345'
 JV0345'A 4-FOOT STAND WAS USED AND ALL OBJECTS WERE VISIBLE.
 JV0345
 JV0345                          STATION RECOVERY (1938)
 JV0345
 JV0345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV0345'THIS STATION AND REFERENCE MARK NO.3 RECOVERED IN GOOD
 JV0345'CONDITION.  REFERENCE MARK (NOT STAMPED) WAS DESTROYED BY
 JV0345'CULTIVATION.  STATION IS ON A 20-FOOT BLUFF OVERLOOKING THE
 JV0345'CHESAPEAKE BAY ABOUT 2 MILES S OF ROCK HALL AND ABOUT 1 MILE S OF
 JV0345'HUNTINGFIELD POINT ON EASTERN NECK IN THE SW CORNER OF CULTIVATED
 JV0345'FIELD, AND ON A PLOT OF LAND LEASED BY THE ARMY FOR THEIR
 JV0345'OBSERVATION TOWER, WHICH IS DIRECTLY OVER THE STATION.  STATION
 JV0345'IS ABOUT 40 METERS E OF EDGE OF BLUFF, AND ABOUT 12 METERS NE OF
 JV0345'THE W FENCE LINE.  THERE IS A SMALL POWER-PLANT BUILDING NNW OF
 JV0345'STATION.  THE SE CORNER OF IT IS 28.9 FEET AND THE SW
 JV0345'CORNER OF IT IS 31.3 FEET DISTANT.
 JV0345'
 JV0345'REFERENCE MARK NO.3 (STAMPED R.M.NO.3 H.B.T. NO.15) IS 26 PACES
 JV0345'E OF FACE OF BLUFF NEAR EDGE OF LEASED PLOT.
 JV0345'
 JV0345'REFERENCE MARK NO.2 (AZIMUTH MARK) IS JUST S OF GIRL CAMP
 JV0345'BUILDINGS IN OPEN FIELD 5 PACES E OF STATION BLUFF, 21 PACES S OF
 JV0345'5-INCH LONE LOCUST TREE, WHICH IS THE ONLY TREE S OF THE CAMP
 JV0345'BUILDINGS.
 JV0345'
 JV0345'TO REACH STATION FROM ROCK HALL VIA EASTERN NECK ROAD - GO S ON
 JV0345'PAVED ROAD 2.1 MILES TO BRICK GATEPOST ENTRANCE MARKED
 JV0345'HUNTINGFIELD - TURN RIGHT, GO 0.35 MILE TO FARM BUILDINGS, TURN
 JV0345'RIGHT IN LANE BEYOND BARN AND SHEDS AND GO 0.1 MILE TO GATE, TURN
 JV0345'LEFT ALONG N SIDE OF FENCE TO ARMY OBSERVATION TOWER AND STATION.
 JV0345
 JV0345                          STATION RECOVERY (1961)
 JV0345
 JV0345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV0345'STATION DESTROYED.  THE DISTANCE AND AZIMUTH FROM HUNTINGFIELD
 JV0345'ECCENTRIC 1938 PLACES THE STATION IN THE WATER.  A SEARCH OF THE
 JV0345'AREA FAILED TO LOCATE ANY OF THE REFERENCE MARKS.
 JV0345
 JV0345                          STATION RECOVERY (1964)
 JV0345
 JV0345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (CFO)
 JV0345'NO STANDARD STATION MARK WAS LOCATED UNDER THE ARMY OBSERVATION
 JV0345'TOWER AS PREVIOUSLY DESCRIBED, UNDER THE TOWER WAS FOUND A 6-INCH
 JV0345'SQUARE CONCRETE POST FLUSH WITH THE GROUND, IT HAVING A PLAIN
 JV0345'BRONZE DISK IN THE TOP WITH NO LETTER DESIGNATION OR STAMPING ON
 JV0345'THE DISK AND IT NOT BEING IN THE CENTER OF THE WOODEN TOWER ABOUT
 JV0345'25 FEET HIGH.  NONE OF THE 3 REFERENCE MARKS LISTED IN THE BOX
 JV0345'SCORE OF THE 1933 OBSERVATION WERE RECOVERABLE AND THE TOWER IS
 JV0345'NOW ON THE EDGE OF THE BLUFF WHICH IS ABOUT 20 FEET HIGH.
 JV0345'
 JV0345'NOTE--AT THE BASE OF THE BLUFF WAS FOUND A CONCRETE MONUMENT AND
 JV0345'ANOTHER SMALL MASS OF CONCRETE, BOTH HAVING DISKS IN THEM, THESE
 JV0345'STATION MARK DISKS WERE STAMPED HUNTINGFIELD ECC 1938 AND THE DISKS
 JV0345'WERE REMOVED AT THIS DATE.  NO DESCRIPTION OF THIS STATION COULD
 JV0345'BE FOUND IN THE DATA FURNISHED.
 JV0345
 JV0345                          STATION RECOVERY (1964)
 JV0345
 JV0345'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964
 JV0345'2.5 MI S FROM ROCK HALL.
 JV0345'2.5 MILES SOUTH OF ROCK HALL, ON THE HUNTINGFIELD ESTATE, ABOUT 0.5
 JV0345'MILE WEST OF THE HIGHWAY TO EASTERN NECK ISLAND, AT THE ARMY
 JV0345'OBSERVATION STATION, DIRECTLY UNDER THE TOWER, IN THE SOUTHWEST
 JV0345'CORNER OF A CULTIVATED FIELD, 40 YARDS EAST OF THE EDGE OF THE
 JV0345'BLUFF, ABOUT 12 YARDS NORTH OF AN EAST-WEST FENCE ROW, 28.9 FEET
 JV0345
 JV0345                          STATION RECOVERY (1990)
 JV0345
 JV0345'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0345'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5067 ***********************************************************************
 JV5067  DESIGNATION -  HUNTINGFIELD ECC
 JV5067  PID         -  JV5067
 JV5067  STATE/COUNTY-  MD/KENT
 JV5067  COUNTRY     -  US
 JV5067  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5067
 JV5067                         *CURRENT SURVEY CONTROL
 JV5067  ______________________________________________________________________
 JV5067* NAD 83(1991) POSITION- 39 06 37.22085(N) 076 14 36.14135(W)   ADJUSTED
 JV5067* NAVD 88 ORTHO HEIGHT -     7.    (meters)       23.    (feet) SCALED
 JV5067  ______________________________________________________________________
 JV5067  GEOID HEIGHT    -        -33.406 (meters)                     GEOID18
 JV5067  LAPLACE CORR    -         -1.92  (seconds)                    DEFLEC18
 JV5067  HORZ ORDER      -  SECOND
 JV5067
 JV5067.The horizontal coordinates were established by classical geodetic methods
 JV5067.and adjusted by the National Geodetic Survey in January 1992.
 JV5067
 JV5067.The orthometric height was scaled from a topographic map.
 JV5067
 JV5067.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5067.GEOID18 height accuracy estimate available here.
 JV5067
 JV5067.Click photographs - Photos may exist for this station.
 JV5067
 JV5067.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5067
 JV5067. The following values were computed from the NAD 83(1991) position.
 JV5067
 JV5067;                    North         East     Units Scale Factor Converg.
 JV5067;SPC MD       -   160,526.312   465,438.505   MT  0.99995820   +0 28 29.6
 JV5067;SPC MD       -   526,660.08  1,527,026.16   sFT  0.99995820   +0 28 29.6
 JV5067;UTM  18      - 4,329,757.016   392,499.865   MT  0.99974229   -0 47 03.9
 JV5067
 JV5067!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5067!SPC MD       -   1.00000418  x   0.99995820  =   0.99996238
 JV5067!UTM  18      -   1.00000418  x   0.99974229  =   0.99974647
 JV5067
 JV5067:                Primary Azimuth Mark                     Grid Az
 JV5067:SPC MD       -  LOVE POINT LIGHTHOUSE                    209 48 30.2
 JV5067:UTM  18      -  LOVE POINT LIGHTHOUSE                    211 04 03.7
 JV5067
 JV5067_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9249929757(NAD 83)
 JV5067
 JV5067|---------------------------------------------------------------------|
 JV5067| PID    Reference Object                     Distance      Geod. Az  |
 JV5067|                                                           dddmmss.s |
 JV5067| CA9551 HUNTINGFIELD ECC RM                  27.380 METERS 12547     |
 JV5067| JV5162 LOVE POINT LIGHTHOUSE               APPROX. 6.8 KM 2101659.8 |
 JV5067| JV0345 HUNTINGFIELD BANK TWR 15             15.670 METERS 23304     |
 JV5067| CA9548 HUNTINGFIELD BANK TWR 15 RM 3        30.480 METERS 27618     |
 JV5067|---------------------------------------------------------------------|
 JV5067
 JV5067                          SUPERSEDED SURVEY CONTROL
 JV5067
 JV5067  NAD 83(1986)-  39 06 37.21520(N)    076 14 36.15217(W) AD(       ) 2
 JV5067  NAD 27      -  39 06 36.81900(N)    076 14 37.31700(W) AD(       ) 2
 JV5067
 JV5067.Superseded values are not recommended for survey control.
 JV5067
 JV5067.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5067.See file dsdata.pdf to determine how the superseded data were derived.
 JV5067
 JV5067_MARKER: DS = TRIANGULATION STATION DISK
 JV5067_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5067_MARK LOGO: CGS
 JV5067_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5067+STABILITY: SURFACE MOTION
 JV5067
 JV5067  HISTORY     - Date     Condition        Report By
 JV5067  HISTORY     - 1938     MONUMENTED       CGS
 JV5067  HISTORY     - 1961     GOOD             CGS
 JV5067
 JV5067                          STATION DESCRIPTION
 JV5067
 JV5067'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (LWS)
 JV5067'THIS STATION IS ON A 20-FOOT BLUFF OVERLOOKING CHESAPEAKE BAY,
 JV5067'ABOUT 2 MILES S OF ROCK HALL AND ABOUT 1 MILE S OF HUNTINGFIELD
 JV5067'POINT ON EASTERN NECK IN THE SW CORNER OF A CULTIVATED FIELD AND
 JV5067'ON A PLOT OF LAND LEASED BY THE ARMY FOR THEIR OBSERVATION TOWER
 JV5067'WHICH IS 15.7 METERS W OF STATION AND APPROXIMATELY 22 METERS
 JV5067'FROM E AND W FENCE LINE WHICH RUNS TO THE BLUFF EDGE.  STATION
 JV5067'IS 14.47 METERS FROM THE CENTER OF THE NE CONCRETE FOOTING OF
 JV5067'THE ARMY TOWER AND 12.84 METERS FROM THE CENTER OF THE SE
 JV5067'FOOTING.
 JV5067'
 JV5067'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JV5067'DISKS SET IN CONCRETE.
 JV5067'
 JV5067'REFERENCE MARK, STAMPED R.M.NO.3 H.B.T. NO.15, IS WNW OF
 JV5067'STATION, APPROXIMATELY 24 METERS E OF FACE OF BLUFF AND 71.8 FEET
 JV5067'NNW OF CENTER OF OBSERVATION TOWER.  REFERENCE MARK, STAMPED
 JV5067'H. ECC. 1938 IS SSE OF STATION ABOUT 32 METERS ESE OF ARMY
 JV5067'OBSERVATION TOWER, AND 1 FOOT N OF E-W FENCE LINE.  NO AZIMUTH
 JV5067'MARK WAS ESTABLISHED AS ONE ALREADY EXISTS AT STATION
 JV5067'HUNTINGFIELD BANK TOWER NO.15, 1918.
 JV5067'
 JV5067'TO REACH STATION FROM ROCK HILL VIA EASTERN NECK ROAD GO S ON
 JV5067'PAVED ROAD 2.1 MILES TO BRICK GATEPOST ENTRANCE MARKED HUNTINGFIELD,
 JV5067'TURN RIGHT AND GO 0.35 MILE TO FARM BUILDINGS, TURN RIGHT INTO
 JV5067'LANE BEYOND BARN AND SHEDS, GO 0.1 MILE TO GATE, TURN LEFT ALONG
 JV5067'N SIDE OF FENCE TO ARMY OBSERVATION TOWER AND STATION.
 JV5067'
 JV5067'THE BLUFF AT STATION IS ERODING FAST AND DISTANCES TO SAME WILL
 JV5067'DIFFER IN TIME.
 JV5067
 JV5067                          STATION RECOVERY (1961)
 JV5067
 JV5067'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5067'STATION MARK RECOVERED IN GOOD CONDITION.  HUNTINGFIELD TOWER
 JV5067'NO. 15, 1918 AND R.M. NO.3 H.B.T. NO. 15 HAVE BEEN DESTROYED BY
 JV5067'EROSION.  R.M. H. ECC., 1938 WAS NOT FOUND.  IT IS NOW IN A
 JV5067'CULTIVATED FIELD AND HAS PROBABLY BEEN PLOWED OUT.
 JV5067'
 JV5067'STATION IS NOW 9 FT. E OF THE EDGE OF THE BANK, 4 FT. N OF THE
 JV5067'NE CORNER OF A SMALL WHITE BUILDING WHICH IS ON THE N SIDE OF A
 JV5067'WHITE WOODEN OBSERVATION TOWER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7318 ***********************************************************************
 HV7318  DESIGNATION -  HUNTINGTOWN
 HV7318  PID         -  HV7318
 HV7318  STATE/COUNTY-  MD/CALVERT
 HV7318  COUNTRY     -  US
 HV7318  USGS QUAD   -  PRINCE FREDERICK (2016)
 HV7318
 HV7318                         *CURRENT SURVEY CONTROL
 HV7318  ______________________________________________________________________
 HV7318* NAD 83(1993) POSITION- 38 37 08.41593(N) 076 36 46.05911(W)   ADJUSTED
 HV7318* NAVD 88 ORTHO HEIGHT -    52.    (meters)      171.    (feet) SCALED
 HV7318  ______________________________________________________________________
 HV7318  GEOID HEIGHT    -        -33.631 (meters)                     GEOID18
 HV7318  LAPLACE CORR    -         -4.39  (seconds)                    DEFLEC18
 HV7318  HORZ ORDER      -  SECOND
 HV7318
 HV7318.The horizontal coordinates were established by classical geodetic methods
 HV7318.and adjusted by the National Geodetic Survey in November 1994.
 HV7318
 HV7318.The orthometric height was scaled from a topographic map.
 HV7318
 HV7318.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7318.GEOID18 height accuracy estimate available here.
 HV7318
 HV7318.Click photographs - Photos may exist for this station.
 HV7318
 HV7318.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7318
 HV7318. The following values were computed from the NAD 83(1993) position.
 HV7318
 HV7318;                    North         East     Units Scale Factor Converg.
 HV7318;SPC MD       -   105,784.713   433,719.930   MT  0.99995984   +0 14 34.9
 HV7318;SPC MD       -   347,062.01  1,422,962.80   sFT  0.99995984   +0 14 34.9
 HV7318;UTM  18      - 4,275,732.018   359,595.328   MT  0.99984276   -1 00 24.4
 HV7318
 HV7318!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7318!SPC MD       -   0.99999716  x   0.99995984  =   0.99995700
 HV7318!UTM  18      -   0.99999716  x   0.99984276  =   0.99983992
 HV7318
 HV7318:                Primary Azimuth Mark                     Grid Az
 HV7318:SPC MD       -  HUNTINGTOWN AZ MK                        181 07 58.4
 HV7318:UTM  18      -  HUNTINGTOWN AZ MK                        182 22 57.7
 HV7318
 HV7318_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5959575732(NAD 83)
 HV7318
 HV7318|---------------------------------------------------------------------|
 HV7318| PID    Reference Object                     Distance      Geod. Az  |
 HV7318|                                                           dddmmss.s |
 HV7318| CX2912 HUNTINGTOWN RM 1                     30.084 METERS 09817     |
 HV7318| CX2911 HUNTINGTOWN AZ MK                                  1812233.3 |
 HV7318| HV0934 WO 24                                44.126 METERS 32709     |
 HV7318|---------------------------------------------------------------------|
 HV7318
 HV7318                          SUPERSEDED SURVEY CONTROL
 HV7318
 HV7318  NAD 83(1991)-  38 37 08.41616(N)    076 36 46.06039(W) AD(       ) 2
 HV7318  NAD 83(1986)-  38 37 08.41509(N)    076 36 46.07466(W) AD(       ) 2
 HV7318  NAD 27      -  38 37 07.98048(N)    076 36 47.22665(W) AD(       ) 2
 HV7318
 HV7318.Superseded values are not recommended for survey control.
 HV7318
 HV7318.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7318.See file dsdata.pdf to determine how the superseded data were derived.
 HV7318
 HV7318_MARKER: DS = TRIANGULATION STATION DISK
 HV7318_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7318_STAMPING: HUNTINGTOWN 1943
 HV7318_MARK LOGO: CGS
 HV7318_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7318+STABILITY: SURFACE MOTION
 HV7318
 HV7318  HISTORY     - Date     Condition        Report By
 HV7318  HISTORY     - 1943     MONUMENTED       CGS
 HV7318  HISTORY     - 1945     GOOD             CGS
 HV7318  HISTORY     - 1959     GOOD             CGS
 HV7318
 HV7318                          STATION DESCRIPTION
 HV7318
 HV7318'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7318'THE STATION IS LOCATED IN HUNTINGTOWN, A SMALL SETTLEMENT ON STATE
 HV7318'HIGHWAY 2, 6 MILES NORTH OF PRINCE FREDERICK.  IT IS LOCATED ON
 HV7318'THE EAST SIDE OF THE HIGHWAY ON THE GROUNDS OF THE PUBLIC SCHOOL
 HV7318'(THE BUILDING HAS BURNED DOWN), 0.2 MILE NORTH OF THE CROSSROADS.
 HV7318'IT IS LOCATED IN THE FENCE LINE AT THE SOUTH SIDE OF THE SCHOOL
 HV7318'GROUNDS, 30 FEET EAST OF THE EXTENDED LINE OF THE EAST WALL OF THE
 HV7318'REMAINS OF THE SCHOOL HOUSE.  IT IS FLUSH WITH THE GROUND AND THE
 HV7318'DISK IS STAMPED HUNTINGTOWN 1943.
 HV7318'
 HV7318'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 HV7318'DISKS SET IN CONCRETE.
 HV7318'
 HV7318'REFERENCE MARK NO.1 IS EAST OF THE STATION.  IT IS FLUSH WITH THE
 HV7318'GROUND AND THE DISK IS STAMPED HUNTINGTOWN NO. 1 1943.
 HV7318'
 HV7318'A TRAVERSE CONNECTION WAS MADE TO THE U.S. GEOLOGICAL SURVEY BENCH
 HV7318'MARK WO 24.  IT IS LOCATED NORTHWEST OF THE STATION, 2 FEET NORTH
 HV7318'OF THE STEPS TO THE OLD SCHOOL BUILDING.  IT IS MARKED WITH A
 HV7318'STANDARD U.S.G.S. B.M. DISK STAMPED WO 24 AND SET IN CONCRETE
 HV7318'FLUSH WITH THE GROUND.  THIS MARK WILL ALSO SERVE AS REFERENCE
 HV7318'MARK NO. 2.
 HV7318'
 HV7318'THE AZIMUTH MARK IS LOCATED 0.7 MILE SOUTH OF THE STATION.  IT IS
 HV7318'10 FEET SOUTH OF THE CENTER OF A DRIVEWAY, 15 FEET EAST AND 23
 HV7318'FEET NORTH OF THE NORTHEAST CORNER OF A SHACK WHICH IS JUST
 HV7318'SOUTH OF A WHITE HOUSE WITH A GREEN ROOF.  IT PROJECTS 4 INCHES
 HV7318'AND THE DISK IS STAMPED HUNTINGTOWN 1943.  TO REACH FROM THE
 HV7318'STATION GO SOUTH ON THE HIGHWAY 0.7 MILE, HERE TURN RIGHT INTO
 HV7318'DRIVEWAY BETWEEN WHITE HOUSE WITH GREEN ROOF AND A SHACK,
 HV7318'FOR ABOUT 50 YARDS TO THE AZIMUTH MARK AS DESCRIBED.
 HV7318'
 HV7318'A 64-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION SOPER.
 HV7318'
 HV7318'A 37-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION DONOVAN.
 HV7318'
 HV7318'A 77-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION TURNER.
 HV7318'
 HV7318'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION NAYLOR.
 HV7318'
 HV7318'A 77-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION DOWELL.
 HV7318'
 HV7318'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 HV7318
 HV7318                          STATION RECOVERY (1945)
 HV7318
 HV7318'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945 (FLP)
 HV7318'THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION.
 HV7318'THE DISTANCE WERE MEASURED AND CHECKED.  THE DESCRIPTION IS
 HV7318'ADEQUATE EXCEPT THAT THE OLD SCHOOLHOUSE HAS BURNED DOWN AND THE
 HV7318'STATION IS NOW 35.0 METERS FROM THE SW CORNER OF THE NEW BRICK
 HV7318'SCHOOL AND 26.5 METERS FROM THE SE CORNER.  THE STATION IS IN AN
 HV7318'OLD FENCE LINE ON THE S EDGE OF SCHOOL GROUNDS.  THE AZIMUTH MARK
 HV7318'IS 0.5 MILE S AND NOT 0.7 MILE S AS STATED IN FORMER DESCRIPTION.
 HV7318
 HV7318                          STATION RECOVERY (1959)
 HV7318
 HV7318'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (LFV)
 HV7318'STATION, AND AZIMUTH MARK RECOVERED IN GOOD CONDITION.  REFERENCE
 HV7318'MARK NO. 1 APPEARS TO BE IN GOOD CONDITION, BUT DISTANCE WAS
 HV7318'FOUND TO BE 99.80 FEET.  AZIMUTH MARK NOT VISIBLE FROM STATION ON
 HV7318'GROUND.  U.S.G.S. BM NO 24 (R.M. NO. 2) SEARCHED FOR BUT NOT
 HV7318'RECOVERED.  MARK MAY HAVE BEEN DESTROYED WHEN YARD IN FRONT OF
 HV7318'SCHOOL WAS GRADED.  DESCRIPTION ADEQUATE AND CORRECT EXCEPT FOR
 HV7318'THE FOLLOWING.  STATION IS 33.2 FEET SOUTH OF POWER POLE AND
 HV7318'PROJECTS ABOUT 6 INCHES.  REFERENCE MARK NO. 2 IS 129.4 FEET
 HV7318'SOUTHEAST CORNER SCHOOL BUILDING AND FLUSH WITH GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7368 ***********************************************************************
 HV7368  DESIGNATION -  HUNTINGTOWN MICROWAVE TOWER
 HV7368  PID         -  HV7368
 HV7368  STATE/COUNTY-  MD/CALVERT
 HV7368  COUNTRY     -  US
 HV7368  USGS QUAD   -  LOWER MARLBORO (2016)
 HV7368
 HV7368                         *CURRENT SURVEY CONTROL
 HV7368  ______________________________________________________________________
 HV7368* NAD 83(1993) POSITION- 38 37 33.69105(N) 076 38 12.00180(W)   ADJUSTED
 HV7368* NAVD 88 ORTHO HEIGHT -   112.5   (meters)      369.    (feet) VERTCON3
 HV7368  ______________________________________________________________________
 HV7368  GEOID HEIGHT    -        -33.567 (meters)                     GEOID18
 HV7368  LAPLACE CORR    -         -3.86  (seconds)                    DEFLEC18
 HV7368  HORZ ORDER      -  THIRD
 HV7368
 HV7368.The horizontal coordinates were established by classical geodetic methods
 HV7368.and adjusted by the National Geodetic Survey in November 1994.
 HV7368
 HV7368.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7368.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7368
 HV7368.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7368.GEOID18 height accuracy estimate available here.
 HV7368
 HV7368.Click photographs - Photos may exist for this station.
 HV7368
 HV7368.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7368
 HV7368. The following values were computed from the NAD 83(1993) position.
 HV7368
 HV7368;                    North         East     Units Scale Factor Converg.
 HV7368;SPC MD       -   106,555.503   431,637.855   MT  0.99995930   +0 13 40.9
 HV7368;SPC MD       -   349,590.85  1,416,131.86   sFT  0.99995930   +0 13 40.9
 HV7368;UTM  18      - 4,276,547.947   357,530.795   MT  0.99984996   -1 01 18.6
 HV7368
 HV7368!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7368!SPC MD       -   0.99998761  x   0.99995930  =   0.99994691
 HV7368!UTM  18      -   0.99998761  x   0.99984996  =   0.99983757
 HV7368
 HV7368_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5753076547(NAD 83)
 HV7368
 HV7368                          SUPERSEDED SURVEY CONTROL
 HV7368
 HV7368  NAD 83(1991)-  38 37 33.69057(N)    076 38 12.00330(W) AD(       ) 3
 HV7368  NAD 83(1986)-  38 37 33.68989(N)    076 38 12.01813(W) AD(       ) 3
 HV7368  NAD 27      -  38 37 33.25413(N)    076 38 13.15542(W) AD(       ) 3
 HV7368  NGVD 29 (07/19/86)  112.8    (m)          370.     (f) VERT ANG       
 HV7368
 HV7368.Superseded values are not recommended for survey control.
 HV7368
 HV7368.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7368.See file dsdata.pdf to determine how the superseded data were derived.
 HV7368
 HV7368_MARKER: 45 = MICROWAVE TOWER
 HV7368
 HV7368  HISTORY     - Date     Condition        Report By
 HV7368  HISTORY     - 1977     FIRST OBSERVED   NGS
 HV7368
 HV7368                          STATION DESCRIPTION
 HV7368
 HV7368'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (JLC)
 HV7368'THE STATION IS THE TOP CENTER OF THE HUNTINGTOWN MICROWAVE TOWER
 HV7368'WIU 53.  IT IS A FOUR LEGGED STEEL STRUCTURE, GRAY IN COLOR WITH
 HV7368'TWO CYLINDRICAL ANTENNAS ON TOP AND IS ABOUT 200 FEET ABOVE THE
 HV7368'GROUND SURFACE.  IT IS ON PROPERTY OWNED BY THE BALTIMORE GAS AND
 HV7368'ELECTRIC COMPANY.
 HV7368'
 HV7368'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 521 AND
 HV7368'524 IN HUNTINGTOWN, GO WEST ON STATE HIGHWAY 521 FOR 0.5 MILE TO A
 HV7368'SIDE ROAD LEFT, CONTINUE WEST ON HUNTINGTOWN ROAD FOR 0.7 MILE TO
 HV7368'A CROSS ROAD, CONTINUE WEST ON KING LANDING ROAD FOR 0.1 MILE TO
 HV7368'THE STATION ON THE LEFT.  THE STATION IS LOCATED ABOUT 2-1/4 MILES
 HV7368'EAST OF THE PRINCE GEORGES, CALVERT COUNTY LINE, 1-1/2 MILES
 HV7368'WEST-NORTHWEST OF HUNTINGTOWN AND 1-1/2 MILES WEST OF STATE HIGHWAY 2.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6231 ***********************************************************************
 DN6231  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6231  DESIGNATION -  HUNTSTER
 DN6231  PID         -  DN6231
 DN6231  STATE/COUNTY-  MD/CECIL
 DN6231  COUNTRY     -  US
 DN6231  USGS QUAD   -  CONOWINGO DAM (2016)
 DN6231
 DN6231                         *CURRENT SURVEY CONTROL
 DN6231  ______________________________________________________________________
 DN6231* NAD 83(2011) POSITION- 39 42 19.84351(N) 076 10 16.76688(W)   ADJUSTED
 DN6231* NAD 83(2011) ELLIP HT-   105.461 (meters)        (06/27/12)   ADJUSTED
 DN6231* NAD 83(2011) EPOCH   -  2010.00
 DN6231* NAVD 88 ORTHO HEIGHT -   138.40  (meters)      454.1   (feet) GPS OBS
 DN6231  ______________________________________________________________________
 DN6231  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6231  GEOID HEIGHT    -        -32.896 (meters)                     GEOID03
 DN6231  GEOID HEIGHT    -        -32.923 (meters)                     GEOID18
 DN6231  NAD 83(2011) X  -  1,174,479.965 (meters)                     COMP
 DN6231  NAD 83(2011) Y  - -4,771,315.925 (meters)                     COMP
 DN6231  NAD 83(2011) Z  -  4,052,951.286 (meters)                     COMP
 DN6231  LAPLACE CORR    -         -0.69  (seconds)                    DEFLEC18
 DN6231
 DN6231  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6231  Standards:
 DN6231         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6231            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6231  -------------------------------------------------------------------
 DN6231  NETWORK    0.98   2.21           0.46   0.31   1.13      0.10937027
 DN6231  -------------------------------------------------------------------
 DN6231  Click here for local accuracies and other accuracy information.
 DN6231
 DN6231.The horizontal coordinates were established by GPS observations
 DN6231.and adjusted by the National Geodetic Survey in June 2012.
 DN6231
 DN6231.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6231.been affixed to the stable North American tectonic plate. See 
 DN6231.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6231
 DN6231.The horizontal coordinates are valid at the epoch date displayed above
 DN6231.which is a decimal equivalence of Year/Month/Day.
 DN6231
 DN6231.The orthometric height was determined by GPS observations and a
 DN6231.high-resolution geoid model using precise GPS observation and
 DN6231.processing techniques.
 DN6231
 DN6231.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6231.GEOID18 height accuracy estimate available here.
 DN6231
 DN6231.Click photographs - Photos may exist for this station.
 DN6231
 DN6231.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6231
 DN6231.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6231
 DN6231.The ellipsoidal height was determined by GPS observations
 DN6231.and is referenced to NAD 83.
 DN6231
 DN6231. The following values were computed from the NAD 83(2011) position.
 DN6231
 DN6231;                    North         East     Units Scale Factor Converg.
 DN6231;SPC MD       -   226,655.578   471,069.787   MT  1.00005470   +0 31 12.4
 DN6231;SPC MD       -   743,619.18  1,545,501.46   sFT  1.00005470   +0 31 12.4
 DN6231;UTM  18      - 4,395,728.530   399,586.640   MT  0.99972413   -0 44 54.1
 DN6231
 DN6231!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6231!SPC MD       -   0.99998346  x   1.00005470  =   1.00003815
 DN6231!UTM  18      -   0.99998346  x   0.99972413  =   0.99970759
 DN6231
 DN6231_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9958695728(NAD 83)
 DN6231
 DN6231                          SUPERSEDED SURVEY CONTROL
 DN6231
 DN6231  NAD 83(2007)-  39 42 19.84366(N)    076 10 16.76766(W) AD(2002.00) 1
 DN6231  ELLIP H (02/23/12)  105.479  (m)                       GP(2002.00) 4 1
 DN6231
 DN6231.Superseded values are not recommended for survey control.
 DN6231
 DN6231.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6231.See file dsdata.pdf to determine how the superseded data were derived.
 DN6231
 DN6231_MARKER: DD = SURVEY DISK
 DN6231_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6231_STAMPING: HUNTSTER 2008
 DN6231_MARK LOGO: MD-015
 DN6231_PROJECTION: RECESSED 9 CENTIMETERS
 DN6231_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6231_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6231+STABILITY: SURFACE MOTION
 DN6231_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6231+SATELLITE: SATELLITE OBSERVATIONS - September 17, 2025
 DN6231
 DN6231  HISTORY     - Date     Condition        Report By
 DN6231  HISTORY     - 20081204 MONUMENTED       GWS
 DN6231  HISTORY     - 20130701 GOOD             GPSSS
 DN6231  HISTORY     - 20250917 GOOD             PROFLN
 DN6231
 DN6231                          STATION DESCRIPTION
 DN6231
 DN6231'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6231'THE STATION IS LOCATED ABOUT 7.6 MI (12.2 KM) NORTH-NORTHWEST OF PORT
 DN6231'DEPOSIT, 5.8 MI (9.3 KM) WEST OF RISING SUN AND 2.0 MI (3.2 KM)
 DN6231'NORTH-NORTHWEST OF CONOWINGO.
 DN6231'
 DN6231'TO REACH THE STATION FROM THE JUNCTION OF US1 (CONOWINGO ROAD) AND MD
 DN6231'222 (ROCK SPRINGS ROAD) IN CONOWINGO, PROCEED NORTH ON ROCK SPRINGS
 DN6231'ROAD FOR 2.15 MI (3.5 KM) TO THE STATION ON THE RIGHT.
 DN6231'
 DN6231'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6231'CONCRETE MONUMENT, 711 FT (216.7 M) NORTHEAST OF MILLERS PARK DRIVE,
 DN6231'72.2 FT (22.0 M) EAST OF A TELEPHONE POLE (CONECTIV 31096/42113) ON
 DN6231'THE NORTHWEST SIDE OF ROCK SPRING ROAD AND 146.6 FT (44.7 M) SOUTH OF
 DN6231'A TELEPHONE POLE (CONECTIV 31109/42125) ALSO ON THE NORTHWEST SIDE OF
 DN6231'THE ROAD AND 4.6 FT (1.4 M) SOUTHEAST OF THE EDGE OF PAVING.
 DN6231
 DN6231                          STATION RECOVERY (2013)
 DN6231
 DN6231'RECOVERY NOTE BY GPS SALES AND SERVICES 2013 (FP)
 DN6231'RECOVERED BY FARON PYLES, PLS OF NORTHERN BAY LAND PLANNING,
 DN6231'ENGINEERING AND SURVEYING CORP.
 DN6231
 DN6231                          STATION RECOVERY (2025)
 DN6231
 DN6231'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 DN6231'THE MARK IS 140 FT (42.7 M) SOUTHWEST OF A POINT OPPOSITE POLE 31109,
 DN6231'129 FT (39.3 M) SOUTHWEST OF A V-SHAPED CULVERT HEADWALL, 50 FT (15.2
 DN6231'M) NORTHEAST OF A POINT OPPOSITE POLE 31095, 46 FT (14.0 M) SOUTHWEST
 DN6231'OF THE EXTENDED SOUTHWEST LINE OF HOUSE 927 - ONE STORY WHITE FRAME
 DN6231'BOARDED UP - 26.5 FT (8.1 M) SOUTHEAST OF THE HWY (US 222).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1739 ***********************************************************************
 HU1739  DESIGNATION -  HURLEY
 HU1739  PID         -  HU1739
 HU1739  STATE/COUNTY-  MD/WICOMICO
 HU1739  COUNTRY     -  US
 HU1739  USGS QUAD   -  DELMAR (2016)
 HU1739
 HU1739                         *CURRENT SURVEY CONTROL
 HU1739  ______________________________________________________________________
 HU1739* NAD 83(1991) POSITION- 38 27 26.69462(N) 075 37 20.86719(W)   ADJUSTED
 HU1739* NAVD 88 ORTHO HEIGHT -    13.7   (meters)       45.    (feet) VERTCON3
 HU1739  ______________________________________________________________________
 HU1739  GEOID HEIGHT    -        -35.701 (meters)                     GEOID18
 HU1739  LAPLACE CORR    -         -1.29  (seconds)                    DEFLEC18
 HU1739  HORZ ORDER      -  SECOND
 HU1739
 HU1739.The horizontal coordinates were established by classical geodetic methods
 HU1739.and adjusted by the National Geodetic Survey in January 1992.
 HU1739
 HU1739.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU1739.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU1739
 HU1739.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1739.GEOID18 height accuracy estimate available here.
 HU1739
 HU1739.Click photographs - Photos may exist for this station.
 HU1739
 HU1739.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1739
 HU1739. The following values were computed from the NAD 83(1991) position.
 HU1739
 HU1739;                    North         East     Units Scale Factor Converg.
 HU1739;SPC MD       -    88,683.442   520,229.664   MT  0.99997635   +0 51 52.5
 HU1739;SPC MD       -   290,955.59  1,706,786.82   sFT  0.99997635   +0 51 52.5
 HU1739;UTM  18      - 4,256,751.646   445,690.354   MT  0.99963632   -0 23 13.7
 HU1739
 HU1739!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1739!SPC MD       -   1.00000346  x   0.99997635  =   0.99997981
 HU1739!UTM  18      -   1.00000346  x   0.99963632  =   0.99963978
 HU1739
 HU1739:                Primary Azimuth Mark                     Grid Az
 HU1739:SPC MD       -  HURLEY RM 3                              225 08 39.5
 HU1739:UTM  18      -  HURLEY RM 3                              226 23 45.7
 HU1739
 HU1739_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4569056751(NAD 83)
 HU1739
 HU1739|---------------------------------------------------------------------|
 HU1739| PID    Reference Object                     Distance      Geod. Az  |
 HU1739|                                                           dddmmss.s |
 HU1739| HU1749 BOUNDARY MON 31 E W DE MD            10.986 METERS 00240     |
 HU1739| HU1738 MONUMENT E W 31 DE MD                51.401 METERS 00732     |
 HU1739| DC7411 HURLEY RM 1                          12.207 METERS 02633     |
 HU1739| DC7413 HURLEY RM 4                           8.635 METERS 07625     |
 HU1739| DC7412 HURLEY RM 2                           8.950 METERS 09026     |
 HU1739| HU1803 HURLEY RM 3                         APPROX. 0.8 KM 2260032.0 |
 HU1739|---------------------------------------------------------------------|
 HU1739
 HU1739                          SUPERSEDED SURVEY CONTROL
 HU1739
 HU1739  NAD 83(1986)-  38 27 26.68891(N)    075 37 20.89009(W) AD(       ) 2
 HU1739  NAD 27      -  38 27 26.27218(N)    075 37 22.14920(W) AD(       ) 2
 HU1739  NGVD 29 (07/19/86)   13.9    (m)           46.     (f) VERT ANG       
 HU1739
 HU1739.Superseded values are not recommended for survey control.
 HU1739
 HU1739.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1739.See file dsdata.pdf to determine how the superseded data were derived.
 HU1739
 HU1739_MARKER: DH = HORIZONTAL CONTROL DISK
 HU1739_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1739_STAMPING: HURLEY 1974
 HU1739_MARK LOGO: NGS
 HU1739_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU1739_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1739+STABILITY: SURFACE MOTION
 HU1739
 HU1739  HISTORY     - Date     Condition        Report By
 HU1739  HISTORY     - 1974     MONUMENTED       NGS
 HU1739  HISTORY     - 1974     GOOD             NGS
 HU1739  HISTORY     - 1976     GOOD             NGS
 HU1739  HISTORY     - 19810626 GOOD             NGS
 HU1739  HISTORY     - 19971018 POOR             USPSQD
 HU1739
 HU1739                          STATION DESCRIPTION
 HU1739
 HU1739'DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (LAL)
 HU1739'THE STATION IS LOCATED ABOUT 4.5 MILES NORTHEAST OF HEBRON,
 HU1739'MARYLAND, 2.3 MILES WEST OF DELMAR, DELAWARE, AND ON ROAD
 HU1739'RIGHT-OF-WAY.
 HU1739'
 HU1739'TO REACH THE STATION FROM THE RAILROAD CROSSING AND STATE ROAD
 HU1739'54 IN DELMAR, GO WEST ON STATE ROAD 54 FOR 0.2 MILE TO A Y-FORK,
 HU1739'BEAR LEFT AND GO WEST ON A PAVED ROAD FOR 0.35 MILE TO A Y-FORK,
 HU1739'BEAR RIGHT AND CONTINUE WEST ON A PAVED ROAD FOR 1.05 MILES TO
 HU1739'THE END OF THE PAVED ROAD, CONTINUE WEST ON A GRAVELED ROAD FOR
 HU1739'0.6 MILE TO THE STATION ON THE LEFT.  CONTINUE WEST ON THE
 HU1739'GRAVELED ROAD FOR 0.3 MILE TO A PAVED T-ROAD.  TURN LEFT AND GO
 HU1739'SOUTH ON THE PAVED ROAD FOR 0.3 MILE TO A PAVED CROSSROAD AND
 HU1739'REFERENCE MARK 3 IN THE SOUTHEAST ANGLE OF THE INTERSECTION.
 HU1739'
 HU1739'STATION MARKS ARE STANDARD DISKS STAMPED HURLEY 1974.  THE
 HU1739'SURFACE DISK IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE
 HU1739'MONUMENT THAT PROJECTS 2-INCHES ABOVE THE GROUND SURFACE.  IT IS
 HU1739'15 FEET SOUTH OF THE CENTER OF THE GRAVELED ROAD, 5 FEET WEST OF
 HU1739'A METAL WITNESS POST AND 3 FEET SOUTH OF A DITCH.  THE
 HU1739'UNDERGROUND DISK IS SET IN THE TOP OF AN IRREGULAR MASS OF
 HU1739'CONCRETE 42 INCHES BELOW THE GROUND SURFACE.
 HU1739'
 HU1739'REFERENCE MARK 1, A STANDARD DISK STAMPED HURLEY NO 1 1974, IS
 HU1739'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1739'PROJECTS 1 INCH ABOVE THE GROUND SURFACE.  IT IS 19 FEET SOUTH
 HU1739'OF A 14-INCH OAK TREE, 17 FEET NORTH OF THE CENTER OF THE
 HU1739'GRAVELED ROAD AND 3 FEET EAST OF A 4 BY 4 INCH CONCRETE PROPERTY
 HU1739'CORNER POST.
 HU1739'
 HU1739'REFERENCE MARK 2, A STANDARD DISK STAMPED HURLEY NO 2 1974, IS
 HU1739'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1739'IS FLUSH WITH THE GROUND SURFACE.  IT IS 17 FEET SOUTH OF THE
 HU1739'CENTER OF THE GRAVELED ROAD, 17 FEET EAST OF A 4-INCH PINE TREE
 HU1739'AND 8 FEET NORTHEAST OF THE NORTHWEST CORNER OF A FIELD.
 HU1739'
 HU1739'REFERENCE MARK 3, A STANDARD DISK STAMPED HURLEY NO 3 1974, IS
 HU1739'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT
 HU1739'PROJECTS 3 INCHES ABOVE THE GROUND SURFACE.  IT IS 41 FEET
 HU1739'SOUTHEAST OF THE INTERSECTION OF THE PAVED ROADS, 6 FEET
 HU1739'SOUTH-SOUTHWEST OF POWERLINE POLE NUMBER 74, 4 FEET
 HU1739'NORTH-NORTHEAST OF JERSEY ROAD SIGN AND 2 FEET SOUTH OF A METAL
 HU1739'WITNESS POST.  THE MARK SERVES AS AN AZIMUTH MARK.
 HU1739
 HU1739                          STATION RECOVERY (1974)
 HU1739
 HU1739'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 HU1739'RECOVERED IN GOOD CONDITION.
 HU1739
 HU1739                          STATION RECOVERY (1976)
 HU1739
 HU1739'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (CLN)
 HU1739'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 HU1739'CONDITION.  REFERENCE MARK 2 HAS BEEN HIT ON THE SOUTHEAST SIDE
 HU1739'BUT IT IS SOLID AND IN GOOD CONDITION.  THE ANGLES TO ALL MARKS
 HU1739'WERE WITHIN CLOSE AGREEMENT WITH THE 1974 OBSERVATIONS.  A
 HU1739'SHORTER DISTANCE OF 0.06 FOOT OR 0.012 METER WAS NOTED TO
 HU1739'REFERENCE MARK 2.  A SHORTER DISTANCE OF 0.04 FOOT OR 0.010
 HU1739'METER WAS NOTED BETWEEN THE REFERENCE MARKS.  ALL OTHER
 HU1739'DISTANCES WERE WITHIN CLOSE AGREEMENT WITH THE 1974
 HU1739'MEASUREMENTS.  THE 1974 DESCRIPTION IS ADEQUATE.
 HU1739'
 HU1739'THE MARYLAND-DELAWARE BOUNDARY MONUMENT NUMBER 31 WAS SET AT
 HU1739'THIS DATE AND INTERSECTED FROM THIS STATION, SEE DESCRIPTION
 HU1739'THEREOF.
 HU1739'
 HU1739'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HU1739'2-1/2 MILES WEST OF DELMAR.
 HU1739
 HU1739                          STATION RECOVERY (1981)
 HU1739
 HU1739'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981
 HU1739'THE STATION SURFACE MARK WAS FOUND OUT OF POSITION BUT THE SUB-SURFACE
 HU1739'MARKER WAS RECOVERED AND FOUND UNDISTURBED.  THE SURFACE MARK WAS
 HU1739'RESET BACK IN ITS ORIGINAL POSITIION.  REFERENCE MARK ONE AND THE
 HU1739'AZIMUTH MARK WERE RECOVERED AND FOUND IN GOOD CONDITION. REFERENCE
 HU1739'MARK TWO WAS FOUND DESTROYED.  A NEW REFERENCE MARK FOUR WAS
 HU1739'ESTABLISHED ON THIS DATE.  BOUNDARY MONUMENT 31 1976 WAS FOUND IN
 HU1739'GOOD CONDITION, BUT DUE TO THE CHANGED BOUNDARY AGREEMENT, A NEW
 HU1739'BOUNDARY MONUMENT 31 WAS ESTABLISHED.  THE DISTANCES AND DIRECTIONS
 HU1739'TO ALL MARKS WERE WITHIN CLOSE AGREEMENT WITH THE MOST RECENT
 HU1739'INFORMATION.
 HU1739'THE STATION IS LOCATED 7 MILES (11.3 KM) NORTHWEST OF SALISBURY, 4-1/2
 HU1739'MILES NORTHEAST OF HEBRON, AND ON ROAD RIGHT-OF-WAY.
 HU1739'TO REACH FROM THE POINT WHERE STATE HIGHWAY 54 CROSSES THE RAILROAD IN
 HU1739'DELMAR, GO WEST ON STATE HIGHWAY 54 FOR 0.2 MILE (0.3 KM) TO A FORK.
 HU1739'KEEP LEFT AND CONTINUE WEST ON WALLER ROAD FOR 0.35 MILE (0.56 KM)
 HU1739'TO A FORK.  KEEP RIGHT AND CONTINUE WEST ON A PAVED ROAD FOR 1.7 MILES
 HU1739'(2.7 KM) TO THE STATION ON THE LEFT.
 HU1739'THE STATION SURFACE MARK IS A STANDARD DISK STAMPED HURLEY 1974 1981,
 HU1739'SET IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS 6
 HU1739'INCHES.  THE SUB-SURFACE DISK IS SET IN A 6-INCH MASS OF CONCRETE
 HU1739'ABOUT 2 FEET (0.6 M) BELOW THE SURFACE AND IS STAMPED HURLEY 1974.
 HU1739'THE STATIONS IS 37.5 FEET (11.4 M) SOUTH OF A WITNESS POST, 45 FEET
 HU1739'(13.7 M) SOUTHWEST OF THE SOUTHWEST EDGE OF A SMALL WOODED AREA, 18.5
 HU1739'FEET (5.6 M) SOUTH OF THE CENTER OF THE ROAD, 10.0 FEET (3.0 M)
 HU1739'SOUTHWEST OF THE SOUTH EDGE OF A 24-INCH CULVERT, AND 1.2 FEET
 HU1739'(0.4 M) NORTH OF A WITNESS POST.
 HU1739'REFERENCE MARK 1 IS A STANDARD DISK STAMPED HURLEY NO 1 1974, SET IN
 HU1739'THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT WHICH PROJECTS 2 INCHES.
 HU1739'IT IS 41 FEET (12.5 M) NORTHEAST OF A WITNESS POST, 18.5 FEET
 HU1739'(5.6 M) NORTH OF THE CENTER OF THE ROAD, 16.5 FEET (5.0 M) EAST OF
 HU1739'THE WITNESS POST, 7.7 FEET (2.3 M) EAST OF THE NORTH END OF THE
 HU1739'24-INCH CULVERT, AND 5 FEET (1.5 M) SOUTHWEST OF THE SOUTHWEST EDGE
 HU1739'OF THE WOODED AREA.
 HU1739'REFERENCE MARK 4 IS A STANDARD DISK STAMPED HURLEY 1974 NO 4 1981, SET
 HU1739'IN THE TOP OF A 10-INCH ROUND CONCRETE MONUMENT WHICH IS 1 INCH BELOW
 HU1739'THE SURFACE.  IT IS 40.0 FEET (12.2 M) SOUTHEAST OF THE WITNESS POST,
 HU1739'18.5 FEET (5.6 M) EAST OF THE CULVERT, AND 10 FEET (3.0 M) SOUTH OF
 HU1739'THE CENTER OF THE ROAD.
 HU1739'THE AZIMUTH MARK IS A STANDARD REFERENCE MARK DISK STAMPED HURLEY NO 3
 HU1739'1974, SET IN THE TOP OF A 12-INCH ROUND CONCRETE MONUMENT WHICH
 HU1739'PROJECT 2 INCHES.  IT IS 41 FEET (12.5 M) SOUTHEAST OF THE CENTER OF
 HU1739'THE INTERSECTION OF JERSEY ROAD AND WALLER ROAD, 6 FEET (1.8 M)
 HU1739'SOUTH-SOUTHWEST OF A POWERLINE POLE NUMBERED 46205 96317 74X55, 4 FEET
 HU1739'(1.2 M) NORTH-NORTHEAST OF A STREET SIGN -JERSEY ROAD-, AND 1.1 FEET
 HU1739'(0.3 M) NORTHEAST OF A WITNESS POST.
 HU1739'TO REACH THE AZIMUTH MARK FROM THE STATION, GO WEST ON THE PAVED ROAD
 HU1739'FOR 0.3 MILE (0.5 KM) TO A T-INTERSECTION.  TURN LEFT AND GO SOUTH ON
 HU1739'JERSEY ROAD FOR 0.3 MILE (0.5 KM) TO A CROSSROADS AND THE MARK IN THE
 HU1739'SOUTHEAST ANGLE OF THE INTERSECTION.
 HU1739
 HU1739                          STATION RECOVERY (1997)
 HU1739
 HU1739'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU1739'MARK RECOVERED IN POOR CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2325 ***********************************************************************
 HU2325  DESIGNATION -  HURLEY RESET
 HU2325  PID         -  HU2325
 HU2325  STATE/COUNTY-  MD/WICOMICO
 HU2325  COUNTRY     -  US
 HU2325  USGS QUAD   -  DELMAR (2016)
 HU2325
 HU2325                         *CURRENT SURVEY CONTROL
 HU2325  ______________________________________________________________________
 HU2325* NAD 83(1986) POSITION- 38 27 26.     (N) 075 37 21.     (W)   SCALED
 HU2325* NAVD 88 ORTHO HEIGHT -    13.692 (meters)       44.92  (feet) ADJUSTED
 HU2325  ______________________________________________________________________
 HU2325  GEOID HEIGHT    -        -35.701 (meters)                     GEOID18
 HU2325  DYNAMIC HEIGHT  -         13.683 (meters)       44.89  (feet) COMP
 HU2325  MODELED GRAVITY -    980,012.9   (mgal)                       NAVD 88
 HU2325
 HU2325  VERT ORDER      -  SECOND    CLASS I
 HU2325
 HU2325.The horizontal coordinates were scaled from a map and have
 HU2325.an estimated accuracy of +/- 6 seconds.
 HU2325
 HU2325.The orthometric height was determined by differential leveling and
 HU2325.adjusted by the NATIONAL GEODETIC SURVEY
 HU2325.in June 1991.
 HU2325
 HU2325.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2325.GEOID18 height accuracy estimate available here.
 HU2325
 HU2325.Click photographs - Photos may exist for this station.
 HU2325
 HU2325.The dynamic height is computed by dividing the NAVD 88
 HU2325.geopotential number by the normal gravity value computed on the
 HU2325.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2325.degrees latitude (g = 980.6199 gals.).
 HU2325
 HU2325.The modeled gravity was interpolated from observed gravity values.
 HU2325
 HU2325;                    North         East    Units  Estimated Accuracy
 HU2325;SPC MD       -    88,660.      520,230.      MT  (+/- 180 meters Scaled)
 HU2325
 HU2325_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH456567(NAD 83)
 HU2325
 HU2325                          SUPERSEDED SURVEY CONTROL
 HU2325
 HU2325  NGVD 29 (06/12/91)   13.941  (m)           45.74   (f) ADJUSTED    2 1
 HU2325
 HU2325.Superseded values are not recommended for survey control.
 HU2325
 HU2325.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2325.See file dsdata.pdf to determine how the superseded data were derived.
 HU2325
 HU2325_MARKER: DH = HORIZONTAL CONTROL DISK
 HU2325_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2325_STAMPING: HURLEY 1974 1981
 HU2325_MARK LOGO: NGS
 HU2325_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2325_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2325+STABILITY: SURFACE MOTION
 HU2325_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU2325+SATELLITE: SATELLITE OBSERVATIONS - November 20, 1989
 HU2325
 HU2325  HISTORY     - Date     Condition        Report By
 HU2325  HISTORY     - 1981     MONUMENTED       NGS
 HU2325  HISTORY     - 19891120 GOOD             NGS
 HU2325
 HU2325                          STATION DESCRIPTION
 HU2325
 HU2325'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU2325'0.5 KM (0.31 MI) WESTERLY ALONG WALLER ROAD FROM ITS JUNCTION WITH
 HU2325'STATE HIGHWAY 54 IN DELMAR, THENCE 2.9 KM (1.80 MI) WESTERLY ALONG A
 HU2325'PAVED ROAD, 0.7 M (2.30 FT) EAST OF THE INTERSECTION OF JERSEY ROAD,
 HU2325'5.6 M (18.37 FT) SOUTH OF THE CENTER OF THE ROAD, 3.0 M (9.84 FT)
 HU2325'WEST-SOUTHWEST OF THE SOUTH END OF A 12-INCH PIPE CULVERT, 0.3 M
 HU2325'(0.98 FT) NORTH OF A WITNESS POST, 0.3 M (0.98 FT) BELOW THE LEVEL OF
 HU2325'THE ROAD, AND IN A CONCRETE MONUMENT THAT PROJECTS 0.3 M (0.98 FT)
 HU2325'ABOVE THE GROUND SURFACE.  NOTE--THE MONUMENT HAS BEEN HIT AND IS
 HU2325'CHIPPED, BUT IS SOLID IN PLACE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1803 ***********************************************************************
 HU1803  DESIGNATION -  HURLEY RM 3
 HU1803  PID         -  HU1803
 HU1803  STATE/COUNTY-  MD/WICOMICO
 HU1803  COUNTRY     -  US
 HU1803  USGS QUAD   -  HEBRON (2016)
 HU1803
 HU1803                         *CURRENT SURVEY CONTROL
 HU1803  ______________________________________________________________________
 HU1803* NAD 83(1991) POSITION- 38 27 08.81199(N) 075 37 44.42261(W)   ADJUSTED
 HU1803* NAVD 88 ORTHO HEIGHT -    14.603 (meters)       47.91  (feet) ADJUSTED
 HU1803  ______________________________________________________________________
 HU1803  GEOID HEIGHT    -        -35.700 (meters)                     GEOID18
 HU1803  LAPLACE CORR    -         -1.32  (seconds)                    DEFLEC18
 HU1803  DYNAMIC HEIGHT  -         14.594 (meters)       47.88  (feet) COMP
 HU1803  MODELED GRAVITY -    980,012.6   (mgal)                       NAVD 88
 HU1803
 HU1803  HORZ ORDER      -  SECOND
 HU1803  VERT ORDER      -  SECOND    CLASS I
 HU1803
 HU1803.The horizontal coordinates were established by classical geodetic methods
 HU1803.and adjusted by the National Geodetic Survey in January 1992.
 HU1803
 HU1803.The orthometric height was determined by differential leveling and
 HU1803.adjusted by the NATIONAL GEODETIC SURVEY
 HU1803.in June 1991.
 HU1803
 HU1803.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1803.GEOID18 height accuracy estimate available here.
 HU1803
 HU1803.Click photographs - Photos may exist for this station.
 HU1803
 HU1803.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1803
 HU1803.The dynamic height is computed by dividing the NAVD 88
 HU1803.geopotential number by the normal gravity value computed on the
 HU1803.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1803.degrees latitude (g = 980.6199 gals.).
 HU1803
 HU1803.The modeled gravity was interpolated from observed gravity values.
 HU1803
 HU1803. The following values were computed from the NAD 83(1991) position.
 HU1803
 HU1803;                    North         East     Units Scale Factor Converg.
 HU1803;SPC MD       -    88,123.514   519,666.908   MT  0.99997698   +0 51 37.7
 HU1803;SPC MD       -   289,118.56  1,704,940.51   sFT  0.99997698   +0 51 37.7
 HU1803;UTM  18      - 4,256,204.331   445,115.697   MT  0.99963710   -0 23 28.2
 HU1803
 HU1803!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1803!SPC MD       -   1.00000331  x   0.99997698  =   0.99998029
 HU1803!UTM  18      -   1.00000331  x   0.99963710  =   0.99964041
 HU1803
 HU1803:                Primary Azimuth Mark                     Grid Az
 HU1803:SPC MD       -  HURLEY                                   045 08 39.6
 HU1803:UTM  18      -  HURLEY                                   046 23 45.5
 HU1803
 HU1803_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4511556204(NAD 83)
 HU1803
 HU1803|---------------------------------------------------------------------|
 HU1803| PID    Reference Object                     Distance      Geod. Az  |
 HU1803|                                                           dddmmss.s |
 HU1803| HU1739 HURLEY                              APPROX. 0.8 KM 0460017.3 |
 HU1803|---------------------------------------------------------------------|
 HU1803
 HU1803                          SUPERSEDED SURVEY CONTROL
 HU1803
 HU1803  NAD 83(1986)-  38 27 08.80654(N)    075 37 44.44584(W) AD(       ) 2
 HU1803  NAD 27      -  38 27 08.38948(N)    075 37 45.70344(W) AD(       ) 2
 HU1803  NGVD 29 (06/12/91)   14.852  (m)           48.73   (f) ADJUSTED    2 1
 HU1803  NGVD 29 (07/19/86)   14.8    (m)           49.     (f) VERT ANG       
 HU1803
 HU1803.Superseded values are not recommended for survey control.
 HU1803
 HU1803.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1803.See file dsdata.pdf to determine how the superseded data were derived.
 HU1803
 HU1803_MARKER: DR = REFERENCE MARK DISK
 HU1803_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1803_STAMPING: HURLEY NO 3 1974
 HU1803_MARK LOGO: NGS
 HU1803_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1803+STABILITY: SURFACE MOTION
 HU1803_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU1803+SATELLITE: SATELLITE OBSERVATIONS - November 20, 1989
 HU1803
 HU1803  HISTORY     - Date     Condition        Report By
 HU1803  HISTORY     - 1974     MONUMENTED       NGS
 HU1803  HISTORY     - 19891120 GOOD             NGS
 HU1803  HISTORY     - 20040624 POOR             GEOCAC
 HU1803
 HU1803                          STATION DESCRIPTION
 HU1803
 HU1803'DESCRIBED BY NATIONAL GEODETIC SURVEY 1989
 HU1803'4.6 KM (2.86 MI) WESTERLY ALONG WALLER ROAD FROM ITS JUNCTION WITH
 HU1803'STATE HIGHWAY 54 IN DELMAR, 6.4 M (21.00 FT) SOUTH OF THE CENTER OF
 HU1803'THE ROAD, 5.9 M (19.36 FT) EAST OF THE CENTER OF JERSEY ROAD, 1.7 M
 HU1803'(5.58 FT) SOUTHWEST OF A UTILITY POLE WITH A GUY WIRE, LEVEL WITH THE
 HU1803'ROAD, AND IN A CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND
 HU1803'SURFACE.  NOTE--THE MONUMENT HAS BEEN HIT AND IS CHIPPED ON ALL SIDES
 HU1803', BUT IS SOLID IN PLACE.
 HU1803
 HU1803                          STATION RECOVERY (2004)
 HU1803
 HU1803'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HU1803'THERE IS A CONCRETE MONUMENT WITH A STEM PROTRUDING AT THE DESCRIBED
 HU1803'LOCATION AND COORDINATES, BUT THE DISK IS NO LONGER IN PLACE.  THE
 HU1803'MONUMENT LIES IN AN AREA OF TALL GRASS, AND IS LOCATED ABOUT 3.5 FT
 HU1803'(1.07 M) NORTHWEST OF A STOP SIGN FOR THE NORTHBOUND LANE OF JERSEY
 HU1803'ROAD APPROACHING WALLER.  THE TO REACH DIRECTIONS AND OTHER
 HU1803'DESCRIPTIVE REFERENCES REMAIN VALID.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3552 ***********************************************************************
 JU3552  DESIGNATION -  HURTT
 JU3552  PID         -  JU3552
 JU3552  STATE/COUNTY-  MD/KENT
 JU3552  COUNTRY     -  US
 JU3552  USGS QUAD   -  GALENA (2017)
 JU3552
 JU3552                         *CURRENT SURVEY CONTROL
 JU3552  ______________________________________________________________________
 JU3552* NAD 83(1991) POSITION- 39 21 28.49430(N) 075 56 05.39565(W)   ADJUSTED
 JU3552* NAVD 88 ORTHO HEIGHT -    20.    (meters)       66.    (feet) SCALED
 JU3552  ______________________________________________________________________
 JU3552  GEOID HEIGHT    -        -33.458 (meters)                     GEOID18
 JU3552  LAPLACE CORR    -         -2.37  (seconds)                    DEFLEC18
 JU3552  HORZ ORDER      -  THIRD
 JU3552
 JU3552.The horizontal coordinates were established by classical geodetic methods
 JU3552.and adjusted by the National Geodetic Survey in January 1992.
 JU3552
 JU3552.The orthometric height was scaled from a topographic map.
 JU3552
 JU3552.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3552.GEOID18 height accuracy estimate available here.
 JU3552
 JU3552.Click photographs - Photos may exist for this station.
 JU3552
 JU3552.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3552
 JU3552. The following values were computed from the NAD 83(1991) position.
 JU3552
 JU3552;                    North         East     Units Scale Factor Converg.
 JU3552;SPC MD       -   188,275.756   491,801.546   MT  0.99998519   +0 40 06.7
 JU3552;SPC MD       -   617,701.38  1,613,518.91   sFT  0.99998519   +0 40 06.7
 JU3552;UTM  18      - 4,356,912.719   419,459.946   MT  0.99967987   -0 35 34.3
 JU3552
 JU3552!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3552!SPC MD       -   1.00000215  x   0.99998519  =   0.99998734
 JU3552!UTM  18      -   1.00000215  x   0.99967987  =   0.99968202
 JU3552
 JU3552:                Primary Azimuth Mark                     Grid Az
 JU3552:SPC MD       -  HURTT RM 3 AZIMUTH                       209 05 52.3
 JU3552:UTM  18      -  HURTT RM 3 AZIMUTH                       210 21 33.3
 JU3552
 JU3552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1945956912(NAD 83)
 JU3552
 JU3552|---------------------------------------------------------------------|
 JU3552| PID    Reference Object                     Distance      Geod. Az  |
 JU3552|                                                           dddmmss.s |
 JU3552| CB2093 HURTT RM 1                           36.460 METERS 02154     |
 JU3552| CB2094 HURTT RM 2                           25.490 METERS 13534     |
 JU3552| CB2095 HURTT RM 3 AZIMUTH                                 2094559.0 |
 JU3552|---------------------------------------------------------------------|
 JU3552
 JU3552                          SUPERSEDED SURVEY CONTROL
 JU3552
 JU3552  NAD 83(1986)-  39 21 28.48644(N)    075 56 05.40340(W) AD(       ) 3
 JU3552  NAD 27      -  39 21 28.09400(N)    075 56 06.61700(W) AD(       ) 3
 JU3552
 JU3552.Superseded values are not recommended for survey control.
 JU3552
 JU3552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3552.See file dsdata.pdf to determine how the superseded data were derived.
 JU3552
 JU3552_MARKER: DS = TRIANGULATION STATION DISK
 JU3552_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3552_STAMPING: HURITT 1934
 JU3552_MARK LOGO: CGS
 JU3552_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3552+STABILITY: SURFACE MOTION
 JU3552
 JU3552  HISTORY     - Date     Condition        Report By
 JU3552  HISTORY     - 1934     MONUMENTED       CGS
 JU3552  HISTORY     - 1953     MARK NOT FOUND   USGS
 JU3552  HISTORY     - 1963     MARK NOT FOUND   MDDT
 JU3552
 JU3552                          STATION DESCRIPTION
 JU3552
 JU3552'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 JU3552'THE STATION IS ON THE S BANK OF THE SASSAFRAS RIVER, BETWEEN
 JU3552'FREEMAN AND ISLAND CREEKS.  ABOUT 5 MILES AIRLINE NW OF GALENA,
 JU3552'MARYLAND, AND 2 MILES N OF LOCUST GROVE.  ON THE PROPERTY OF
 JU3552'DR. HARRY HURTT.
 JU3552'
 JU3552'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 JU3552'DISKS SET IN CONCRETE.
 JU3552'
 JU3552'REFERENCE MARK NO.1 IS NW OF THE STATION, IN THE FENCE LINE ON
 JU3552'THE E SIDE OF THE ROAD 3.1 METERS E OF THE CENTER LINE OF THE
 JU3552'ROAD, 41.6 METERS N OF THE INTERSECTION OF THE ROAD AND THE E AND
 JU3552'W FENCE.
 JU3552'
 JU3552'REFERENCE MARK NO.2 IS E OF THE STATION, 1.0 METER N OF THE
 JU3552'E-W FENCE, 33.9 METERS E OF THE CENTER LINE OF THE ROAD, 4.5 METERS
 JU3552'W OF A 30-INCH LOCUST TREE IN THE E-W FENCE, PROJECTS 3 INCHES
 JU3552'ABOVE GROUND.
 JU3552'
 JU3552'REFERENCE MARK NO.3 (AZIMUTH MARK) IS SSW OF THE STATION, NEAR
 JU3552'THE SW CORNER OF A CULTIVATED FIELD, 3 PACES N OF THE CENTER LINE
 JU3552'OF A LANE, 7 PACES E OF A FENCE CORNER, 18 INCHES W OF A FENCE,
 JU3552'15 PACES E OF CENTER LINE OF ROAD.
 JU3552'
 JU3552'TO REACH THE STATION FROM GALENA, MARYLAND, GO SW ON HIGHWAY
 JU3552'213, 4.05 MILES TO LOCUST GROVE, MARYLAND, AT A POINT WHERE THE
 JU3552'HIGHWAY TURNS SHARPLY TO THE LEFT.  TAKE A DIRT ROAD N FOR 1.8
 JU3552'MILES TO A FORK IN THE ROAD, TAKE RIGHT FORK AND GO 0.3 MILE TO
 JU3552'STATION.  THE STATION IS 9.5 MILES E OF THE CENTER LINE OF THE
 JU3552'ROAD, 11.3 MILES NE OF THE CENTER LINE OF THE ROAD AT THE POINT
 JU3552'WHERE IT INTERSECTS AN E-W FENCE.  THE STATION IS IN THE SW
 JU3552'CORNER OF A CULTIVATED FIELD, 6 METERS N OF THE E-W FENCE
 JU3552'LINE, 7.2 METERS NE OF THE FENCE CORNER.  THE MARK IS 18
 JU3552'INCHES BELOW THE SURFACE OF THE GROUND, AND IS 18 INCHES
 JU3552'SQUARE, 14 METERS NE OF A 24-INCH WALNUT TREE THAT IS ON THE W
 JU3552'SIDE OF THE ROAD AND IN THE E-W LINE.
 JU3552'
 JU3552'A 103-FOOT TOWER NECESSARY.
 JU3552
 JU3552                          STATION RECOVERY (1953)
 JU3552
 JU3552'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JU3552'STATION WAS NOT FOUND BUT IS PROBABLY O.K.  ONE OF THE MAIN POINTS
 JU3552'USED FOR REFERENCE WAS A FENCE AND THIS IS GONE.  DESCRIPTION
 JU3552'ALSO CONTAINS ERRORS (9.5 MILES E. OF CENTER LINE OF THE ROAD, 11.3
 JU3552'MILES NE OF THE CENTER LINE OF THE ROAD WHERE IT INTERSECTS AN
 JU3552'E-W FENCE) THESE DISTANCES PROBABLY SHOULD BE METERS ALTHOUGH IT
 JU3552'IS POSSIBLE THAT IT COULD BE FEET.  R.M. NO.1 IS PROBABLY
 JU3552'DESTROYED.  DISTANCE GIVEN FROM CENTER LINE OF ROAD WOULD NOW
 JU3552'PLACE IT IN A DITCH.  R.M. NO.3 (AZIMUTH MARK) IS DESTROYED.
 JU3552
 JU3552                          STATION RECOVERY (1963)
 JU3552
 JU3552'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1963
 JU3552'REFERENCE MARK 1 WAS FOUND LYING OUT OF THE GROUND ALONG SIDE OF
 JU3552'ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2088 ***********************************************************************
 HU2088  DESIGNATION -  HUT MSFC 1909
 HU2088  PID         -  HU2088
 HU2088  STATE/COUNTY-  MD/DORCHESTER
 HU2088  COUNTRY     -  US
 HU2088  USGS QUAD   -  PRESTON (2016)
 HU2088
 HU2088                         *CURRENT SURVEY CONTROL
 HU2088  ______________________________________________________________________
 HU2088* NAD 83(1991) POSITION- 38 38 07.03149(N) 075 57 39.16116(W)   ADJUSTED
 HU2088* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU2088  ______________________________________________________________________
 HU2088  GEOID HEIGHT    -        -35.120 (meters)                     GEOID18
 HU2088  LAPLACE CORR    -         -3.11  (seconds)                    DEFLEC18
 HU2088  HORZ ORDER      -  THIRD
 HU2088
 HU2088.The horizontal coordinates were established by classical geodetic methods
 HU2088.and adjusted by the National Geodetic Survey in January 1992.
 HU2088
 HU2088.The orthometric height was scaled from a topographic map.
 HU2088
 HU2088.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2088.GEOID18 height accuracy estimate available here.
 HU2088
 HU2088.Click photographs - Photos may exist for this station.
 HU2088
 HU2088.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2088
 HU2088. The following values were computed from the NAD 83(1991) position.
 HU2088
 HU2088;                    North         East     Units Scale Factor Converg.
 HU2088;SPC MD       -   108,035.484   490,469.977   MT  0.99995861   +0 39 07.9
 HU2088;SPC MD       -   354,446.42  1,609,150.25   sFT  0.99995861   +0 39 07.9
 HU2088;UTM  18      - 4,276,743.067   416,369.553   MT  0.99968613   -0 35 59.9
 HU2088
 HU2088!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2088!SPC MD       -   1.00000555  x   0.99995861  =   0.99996416
 HU2088!UTM  18      -   1.00000555  x   0.99968613  =   0.99969168
 HU2088
 HU2088:                Primary Azimuth Mark                     Grid Az
 HU2088:SPC MD       -  HOUSE MSFC 1909                          225 58 54.1
 HU2088:UTM  18      -  HOUSE MSFC 1909                          227 14 01.9
 HU2088
 HU2088_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1636976743(NAD 83)
 HU2088
 HU2088|---------------------------------------------------------------------|
 HU2088| PID    Reference Object                     Distance      Geod. Az  |
 HU2088|                                                           dddmmss.s |
 HU2088| HU2083 HOUSE MSFC 1909                     APPROX. 1.2 KM 2263802.0 |
 HU2088|---------------------------------------------------------------------|
 HU2088
 HU2088                          SUPERSEDED SURVEY CONTROL
 HU2088
 HU2088  NAD 83(1986)-  38 38 07.02774(N)    075 57 39.17906(W) AD(       ) 3
 HU2088  NAD 27      -  38 38 06.59500(N)    075 57 40.39300(W) AD(       ) 3
 HU2088  USSD        -  38 38 07.00200(N)    075 57 40.19900(W) AD(       ) 3
 HU2088
 HU2088.Superseded values are not recommended for survey control.
 HU2088
 HU2088.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2088.See file dsdata.pdf to determine how the superseded data were derived.
 HU2088
 HU2088_MARKER: H = DRILL HOLE
 HU2088_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2088_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2088+STABILITY: SURFACE MOTION
 HU2088
 HU2088  HISTORY     - Date     Condition        Report By
 HU2088  HISTORY     - 1909     MONUMENTED       MDSFC
 HU2088  HISTORY     - 1941     MARK NOT FOUND   CGS
 HU2088
 HU2088                          STATION DESCRIPTION
 HU2088
 HU2088'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 HU2088'ON THE EASTERN SHORE OF THE UPPER PART OF CHOPTANK RIVER, ON N
 HU2088'SIDE OF ENTRANCE TO CABIN CREEK, ON A MARSH POINT, ABOUT 1 FOOT
 HU2088'ABOVE HIGH WATER, 15 YARDS E OF SHORE, 20 YARDS NE OF EXTREME END
 HU2088'OF POINT, 90 YARDS SW OF A HUT, AND 80 YARDS SSW OF TREES.
 HU2088'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HU2088'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HU2088'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HU2088'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 HU2088'POST.  SUB-SURFACE MARK IS THE CENTER OF A 2-INCH DRAIN TILE PIPE
 HU2088'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 HU2088'DISTANCES TO VARIOUS POINTS OF REFERENCE ARE AS
 HU2088'FOLLOWS--RIGHT PEAK OF OLD BARN, 3/8 MILE, S 24 DEG 21 MIN W.
 HU2088'CHIMNEY OF HOUSE, 1-3/4 MILES, S 72 DEG 05 MIN W.  CHIMNEY
 HU2088'OUTSIDE OF HOUSE, 1-1/4 MILES, N 72 DEG 49 MIN W.  CUPOLA ON BARN,
 HU2088'2-1/2 MILES, N 00 DEG 43 MIN W.  RIGHT CORNER OF HUT, 90 YARDS,
 HU2088'N 40 DEG 31 MIN E.  CHIMNEY OUTSIDE NEAR END OF OLD HOUSE, 1/2
 HU2088'MILE, S 71 DEG 09 MIN E.  PEAK OF NEAR GABLE OF MODERN HOUSE, 1/2
 HU2088'MILE, S 31 DEG 42 MIN E.
 HU2088
 HU2088                          STATION RECOVERY (1941)
 HU2088
 HU2088'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 HU2088'STATION SEARCHED FOR BUT NOT FOUND.  THE GUY STAKES WERE LOCATED
 HU2088'BUT A HOLE 4 INCHES DEEP DID NOT UNCOVER THE TILE.
 HU2088'
 HU2088'RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7271 ***********************************************************************
 HV7271  DESIGNATION -  HUTCHINS
 HV7271  PID         -  HV7271
 HV7271  STATE/COUNTY-  MD/CALVERT
 HV7271  COUNTRY     -  US
 HV7271  USGS QUAD   -  NORTH BEACH (2016)
 HV7271
 HV7271                         *CURRENT SURVEY CONTROL
 HV7271  ______________________________________________________________________
 HV7271* NAD 83(1993) POSITION- 38 37 32.82003(N) 076 30 59.06957(W)   ADJUSTED
 HV7271* NAVD 88 ORTHO HEIGHT -    26.    (meters)       85.    (feet) SCALED
 HV7271  ______________________________________________________________________
 HV7271  GEOID HEIGHT    -        -33.872 (meters)                     GEOID18
 HV7271  LAPLACE CORR    -         -5.61  (seconds)                    DEFLEC18
 HV7271  HORZ ORDER      -  FIRST
 HV7271
 HV7271.The horizontal coordinates were established by classical geodetic methods
 HV7271.and adjusted by the National Geodetic Survey in November 1994.
 HV7271
 HV7271.The orthometric height was scaled from a topographic map.
 HV7271
 HV7271.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7271.GEOID18 height accuracy estimate available here.
 HV7271
 HV7271.Click photographs - Photos may exist for this station.
 HV7271
 HV7271.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7271
 HV7271. The following values were computed from the NAD 83(1993) position.
 HV7271
 HV7271;                    North         East     Units Scale Factor Converg.
 HV7271;SPC MD       -   106,577.222   442,109.674   MT  0.99995932   +0 18 12.7
 HV7271;SPC MD       -   349,662.10  1,450,488.16   sFT  0.99995932   +0 18 12.7
 HV7271;UTM  18      - 4,276,341.234   367,999.263   MT  0.99981457   -0 56 48.2
 HV7271
 HV7271!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7271!SPC MD       -   1.00000127  x   0.99995932  =   0.99996059
 HV7271!UTM  18      -   1.00000127  x   0.99981457  =   0.99981584
 HV7271
 HV7271:                Primary Azimuth Mark                     Grid Az
 HV7271:SPC MD       -  HUTCHINS RM 2 RESET                      237 31 23.8
 HV7271:UTM  18      -  HUTCHINS RM 2 RESET                      238 46 24.7
 HV7271
 HV7271_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6799976341(NAD 83)
 HV7271
 HV7271|---------------------------------------------------------------------|
 HV7271| PID    Reference Object                     Distance      Geod. Az  |
 HV7271|                                                           dddmmss.s |
 HV7271| CX2914 HUTCHINS RM 1                        21.067 METERS 16955     |
 HV7271| CX2913 HUTCHINS RM 2 AZIMUTH                              2374935.2 |
 HV7271| CX2915 HUTCHINS RM 2 RESET                                2374936.5 |
 HV7271| CX2916 HUTCHINS RM 3                        22.470 METERS 27141     |
 HV7271|---------------------------------------------------------------------|
 HV7271
 HV7271                          SUPERSEDED SURVEY CONTROL
 HV7271
 HV7271  NAD 83(1991)-  38 37 32.82060(N)    076 30 59.06994(W) AD(       ) 1
 HV7271  NAD 83(1986)-  38 37 32.81932(N)    076 30 59.08380(W) AD(       ) 1
 HV7271  NAD 27      -  38 37 32.38800(N)    076 31 00.25600(W) AD(       ) 1
 HV7271
 HV7271.Superseded values are not recommended for survey control.
 HV7271
 HV7271.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7271.See file dsdata.pdf to determine how the superseded data were derived.
 HV7271
 HV7271_MARKER: DS = TRIANGULATION STATION DISK
 HV7271_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7271_STAMPING: HUTCHINS 1934
 HV7271_MARK LOGO: CGS
 HV7271_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7271+STABILITY: SURFACE MOTION
 HV7271
 HV7271  HISTORY     - Date     Condition        Report By
 HV7271  HISTORY     - 1934     MONUMENTED       CGS
 HV7271  HISTORY     - 1938     GOOD             CGS
 HV7271  HISTORY     - 1942     GOOD             CGS
 HV7271  HISTORY     - 1943     GOOD             CGS
 HV7271  HISTORY     - 1944     GOOD             CGS
 HV7271  HISTORY     - 1944     GOOD             CGS
 HV7271  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7271
 HV7271                          STATION DESCRIPTION
 HV7271
 HV7271'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HV7271'THIS FIRST-ORDER STATION IS LOCATED JUST N OF PLUM POINT BEACH, ON
 HV7271'THE FIRST HILL W OF CHESAPEAKE BAY, ON THE PROPERTY OF MRS. L. G.
 HV7271'HUTCHINS, AT THE SOUTHERN END OF AN UNCULTIVATED FIELD WHICH IS
 HV7271'SURROUNDED BY TREES, 25.28 METERS SW OF A 14-INCH CHERRY TREE, SIX
 HV7271'METERS E OF THE CENTER LINE OF A DIM DIRT ROAD, AND ABOUT 14
 HV7271'INCHES BELOW THE SURFACE OF THE GROUND.
 HV7271'
 HV7271'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE
 HV7271'DISKS SET IN CONCRETE.
 HV7271'
 HV7271'REFERENCE MARK NO.1 IS 21.067 METERS S OF THE STATION, AND 8.10
 HV7271'METERS NW OF A 10-INCH SASSAFRAS TREE.  THE MARK PROJECTS ABOUT 3
 HV7271'INCHES ABOVE THE SURFACE OF THE GROUND.  REFERENCE MARK NO.2,
 HV7271'AZIMUTH MARK, IS ABOUT 0.4 MILE W OF THE STATION, ON A HILL,
 HV7271'ABOUT 22 PACES E OF A SMALL ICE HOUSE, ABOUT 6 PACES N OF THE
 HV7271'CENTER LINE OF A DIRT ROAD, 2 FEET N OF TELEPHONE POLE NO.27, AND
 HV7271'ABOUT 120 YARDS SSE OF A TWO-STORY FRAME HOUSE.  THE MARK PROJECTS
 HV7271'ABOUT 3 INCHES ABOVE THE SURFACE OF THE GROUND.  VISIBLE FROM
 HV7271'GROUND WITH CLEARING.  REFERENCE MARK NO.3 IS 22.391 METERS W OF
 HV7271'THE STATION, AND ABOUT 10 METERS E OF A TWIN 24-INCH TREE WHICH IS
 HV7271'DOWN THE HILL FROM THE MARK.  THE MARK PROJECTS ABOUT 6 INCHES
 HV7271'ABOVE THE SURFACE OF THE GROUND.
 HV7271'
 HV7271'TO REACH THE STATION FROM CHESAPEAKE BEACH GO S ON A HARD-SURFACE
 HV7271'ROAD FOR ABOUT 4.4 MILES TO ITS END, CONTINUE STRAIGHT AHEAD ON A
 HV7271'DIRT ROAD FOR 0.3 MILE TO A T-ROAD AND A SIGN TO THE BEACH, TURN
 HV7271'LEFT ON A DIRT ROAD FOR 0.8 MILE TO ROAD ON LEFT, TURN LEFT AND
 HV7271'FOLLOW THE ROAD ALONG A RAIL FENCE FOR ABOUT 0.1 MILE TO A TREE ON
 HV7271'THE LEFT WITH A TRIANGULAR BLAZE, TURN LEFT THROUGH A GAP IN THE
 HV7271'RAIL FENCE AND GO ABOUT 500 YARDS TO THE TOP OF THE HILL AND THE
 HV7271'STATION.
 HV7271
 HV7271                          STATION RECOVERY (1938)
 HV7271
 HV7271'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (RMB)
 HV7271'STATION AND REFERENCE MARKS NOS. 1 AND 3 RECOVERED IN GOOD
 HV7271'CONDITION.  REFERENCE MARK NO. 2, AZIMUTH MARK, NOT VISIBLE FROM
 HV7271'GROUND WITHOUT EXCESSIVE CLEARING.
 HV7271'
 HV7271'ORIGINAL DESCRIPTION CORRECT EXCEPT FOR DISTANCE FROM CENTER OF
 HV7271'DIM ROAD WHICH SHOULD READ 21 METERS.
 HV7271
 HV7271                          STATION RECOVERY (1942)
 HV7271
 HV7271'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (CTH)
 HV7271'TWO REFERENCE MARKS RECOVERED, STATION NOT DUG FOR.  LINE TO
 HV7271'AZIMUTH MARK NOW OBSTRUCTED FROM GROUND BY TREES.
 HV7271'
 HV7271'TO REACH STATION FROM DARES WHARF POST OFFICE, GO N 1.55 MILES,
 HV7271'KEEP RIGHT FORK, GO 2.4 MILES, TURN LEFT, GO 0.2 MILE, TURN RIGHT
 HV7271'ON DIRT ROAD, GO 1.1 MILES, TURN RIGHT ON PAVEMENT, GO 0.8 MILE.
 HV7271'KEEP STRAIGHT ON OLD DIM ROAD WHERE PAVEMENT CURVES TO RIGHT, GO
 HV7271'ABOUT 0.1 MILE TO WHERE THERE IS NO HEAVY GROWTH OF VINES ON THE
 HV7271'RAIL FENCE WHICH BORDERS THE LEFT SIDE OF ROAD, TAKE FENCE RAILS
 HV7271'DOWN AND TURN LEFT INTO FIELD, THENCE BEAR RIGHT TO SUMMIT OF
 HV7271'RIDGE, THENCE BEAR LEFT ALONG SUMMIT TO TOP OF HILL IN A CLEARED
 HV7271'FIELD WHICH IS SURROUNDED WITH TIMBER AND STATION SITE.  THE
 HV7271'DISTANCE FROM ROAD AT RAIL FENCE IS APPROXIMATELY 1/4 MILE
 HV7271'(DIFFICULT IN WET WEATHER).
 HV7271'
 HV7271'A 113-FOOT TOWER WAS USED.
 HV7271
 HV7271                          STATION RECOVERY (1943)
 HV7271
 HV7271'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 HV7271'STATION AND R.M.S 1 AND 3 RECOVERED AS DESCRIBED.  R.M. 2 (AZ.MK.)
 HV7271'WAS RESET DUE TO ROAD CONSTRUCTION.
 HV7271'
 HV7271'STATION IS JUST N OF BREEZY POINT BEACH, AT THE S END OF A
 HV7271'CULTIVATED FIELD SURROUNDED BY TREES.  STAMPED HUTCHINS 1934.
 HV7271'
 HV7271'R.M. 1 IS ON BREAK OF HILL.  STAMPED HUTCHINS NO 1 1934.
 HV7271'
 HV7271'REFERENCE MARK 3 IS ABOUT 10 FEET LOWER IN ELEVATION THAN THE
 HV7271'STATION MARK, AT THE EDGE OF THE WOODS.  IT IS STAMPED HUTCHINS NO
 HV7271'3 1934 AND PROJECTS ABOUT 3 INCHES.
 HV7271'
 HV7271'REFERENCE MARK 2 (RESET) (AZIMUTH MARK) IS ON THE MAIN ROAD
 HV7271'LEADING TO BREEZY POINT.  IT IS 6 FEET W OF FENCE, 17 FEET W OF
 HV7271'DIRT ROAD, 9 FEET S OF FENCE, 34 FEET S OF CENTER LINE OF MACADAM
 HV7271'ROAD, AND ABOUT 75 YARDS S OF 2-STORY FRAME HOUSE.  TO REACH FROM
 HV7271'THE STATION RETURN TO MACADAM ROAD, TURN LEFT (S) AND GO 0.6 MILE
 HV7271'TO MARK ON RIGHT OPPOSITE 2-STORY FRAME HOUSE.
 HV7271'
 HV7271'TO REACH THE STATION FROM THE MAIN INTERSECTION IN CHESAPEAKE
 HV7271'BEACH, GO S ON MACADAM ROAD FOR 4.8 MILES TO DIRT ROAD LEFT.  GO
 HV7271'LEFT 0.9 MILE TO DIRT TRACK ROAD RIGHT.  BEAR RIGHT AND GO 0.4
 HV7271'MILE. A 90-FOOT TOWER WILL SEE A 103-FOOT LIGHT AT BUCKLER 1934, A
 HV7271'113-FOOT LIGHT AT TURNER, AND A 113-FOOT LIGHT AT SOPER.
 HV7271
 HV7271                          STATION RECOVERY (1944)
 HV7271
 HV7271'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944 (LPR)
 HV7271'RECOVERED AS DESCRIBED.  THE STATION WAS REACHED FROM THE BEACH
 HV7271'AND DIRECTIONS FOR TRUCK NOT USED.  THE AZIMUTH MARK WAS NOT
 HV7271'SEARCHED FOR.  REFERENCE MARK DISTANCES WERE USED TO FIND THE
 HV7271'STATION (14 INCHES BELOW THE SURFACE).  R.M. 1 IS AT THE S EDGE OF
 HV7271'THE FIELD AND R.M. 3 IS ACROSS THE DIM ROAD.  THE STATION AND
 HV7271'REFERENCE MARKS NOTED ARE IN GOOD CONDITION.
 HV7271
 HV7271                          STATION RECOVERY (1944)
 HV7271
 HV7271'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944 (TBR)
 HV7271'STATION MARK, BOTH REFERENCE MARKS, AND AZIMUTH MARK RECOVERED IN
 HV7271'GOOD CONDITION.  DESCRIPTION ADEQUATE.
 HV7271
 HV7271                          STATION RECOVERY (1960)
 HV7271
 HV7271'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7271'STATION AND REFERENCE MARKS SEARCHED FOR BY 2 MEN FOR ABOUT 2
 HV7271'HOURS, BUT NO TRACE OF THE STATION COULD BE FOUND.  A NEW
 HV7271'SUB-DIVISION HAS DEVELOPED IN THIS AREA AND THE STATION IS
 HV7271'PROBABLY UNDER GROUND AND COULD BE FOUND BY A TRAVERSE METHOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6784 ***********************************************************************
 HV6784  DESIGNATION -  HUTCHINS 2
 HV6784  PID         -  HV6784
 HV6784  STATE/COUNTY-  MD/ST MARYS
 HV6784  COUNTRY     -  US
 HV6784  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6784
 HV6784                         *CURRENT SURVEY CONTROL
 HV6784  ______________________________________________________________________
 HV6784* NAD 83(1993) POSITION- 38 23 17.59092(N) 076 33 06.39324(W)   ADJUSTED
 HV6784* NAVD 88 ORTHO HEIGHT -    11.    (meters)       36.    (feet) SCALED
 HV6784  ______________________________________________________________________
 HV6784  GEOID HEIGHT    -        -34.092 (meters)                     GEOID18
 HV6784  LAPLACE CORR    -         -5.59  (seconds)                    DEFLEC18
 HV6784  HORZ ORDER      -  SECOND
 HV6784
 HV6784.The horizontal coordinates were established by classical geodetic methods
 HV6784.and adjusted by the National Geodetic Survey in November 1994.
 HV6784
 HV6784.The orthometric height was scaled from a topographic map.
 HV6784
 HV6784.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6784.GEOID18 height accuracy estimate available here.
 HV6784
 HV6784.Click photographs - Photos may exist for this station.
 HV6784
 HV6784.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6784
 HV6784. The following values were computed from the NAD 83(1993) position.
 HV6784
 HV6784;                    North         East     Units Scale Factor Converg.
 HV6784;SPC MD       -    80,191.571   439,159.468   MT  0.99998582   +0 16 52.8
 HV6784;SPC MD       -   263,095.18  1,440,809.02   sFT  0.99998582   +0 16 52.8
 HV6784;UTM  18      - 4,250,030.047   364,475.751   MT  0.99982619   -0 57 49.6
 HV6784
 HV6784!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6784!SPC MD       -   1.00000367  x   0.99998582  =   0.99998949
 HV6784!UTM  18      -   1.00000367  x   0.99982619  =   0.99982986
 HV6784
 HV6784:                Primary Azimuth Mark                     Grid Az
 HV6784:SPC MD       -  COLE 2                                   292 32 14.7
 HV6784:UTM  18      -  COLE 2                                   293 46 57.1
 HV6784
 HV6784_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6447550030(NAD 83)
 HV6784
 HV6784|---------------------------------------------------------------------|
 HV6784| PID    Reference Object                     Distance      Geod. Az  |
 HV6784|                                                           dddmmss.s |
 HV6784| CX2917 HUTCHINS 2 RM 1                      15.059 METERS 12222     |
 HV6784| CX2918 HUTCHINS 2 RM 2                      19.200 METERS 20010     |
 HV6784| CX2919 HUTCHINS 2 RM 3                      13.152 METERS 22410     |
 HV6784| HV6779 HUTCHINS RM                           9.578 METERS 29037     |
 HV6784| HV6780 COLE 2                              APPROX. 3.4 KM 2924907.5 |
 HV6784| HV6757 BATTLE CREEK SHOAL LIGHTHOUSE       APPROX. 6.7 KM 3132355.7 |
 HV6784|---------------------------------------------------------------------|
 HV6784
 HV6784                          SUPERSEDED SURVEY CONTROL
 HV6784
 HV6784  NAD 83(1991)-  38 23 17.59085(N)    076 33 06.39393(W) AD(       ) 2
 HV6784  NAD 83(1986)-  38 23 17.59052(N)    076 33 06.40796(W) AD(       ) 2
 HV6784  NAD 27      -  38 23 17.14100(N)    076 33 07.56700(W) AD(       ) 2
 HV6784
 HV6784.Superseded values are not recommended for survey control.
 HV6784
 HV6784.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6784.See file dsdata.pdf to determine how the superseded data were derived.
 HV6784
 HV6784_MARKER: DS = TRIANGULATION STATION DISK
 HV6784_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV6784_STAMPING: HUTCHINS 2 1942
 HV6784_MARK LOGO: CGS
 HV6784_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6784+STABILITY: SURFACE MOTION
 HV6784
 HV6784  HISTORY     - Date     Condition        Report By
 HV6784  HISTORY     - 1942     MONUMENTED       CGS
 HV6784  HISTORY     - 1974     GOOD             MDDNR
 HV6784  HISTORY     - 1979     GOOD             NGS
 HV6784  HISTORY     - 1982     GOOD             MDDNR
 HV6784
 HV6784                          STATION DESCRIPTION
 HV6784
 HV6784'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6784'STATION IS ON THE SW SHORE OF THE PATUXENT RIVER, OPPOSITE BROOME
 HV6784'ISLAND, ON CAPTAIN POINT, JUST W OF THE MOUTH OF THOMAS CREEK, IN
 HV6784'THE LAWN IN FRONT OF A SUMMER COTTAGE, AND ON A POINT OF BLUFF
 HV6784'ABOUT 50 FEET HIGH.  IT IS 85 FEET NE OF THE NW CORNER OF THE
 HV6784'COTTAGE AND 15 FEET S OF THE BLUFF.  IT IS FLUSH WITH THE LAWN
 HV6784'AND IS STAMPED HUTCHINS 1942.
 HV6784'
 HV6784'SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE BRONZE DISKS SET IN
 HV6784'CONCRETE.
 HV6784'
 HV6784'REFERENCE MARK 1 IS E OF THE STATION.  IT IS SET FLUSH WITH THE
 HV6784'GROUND AND IS STAMPED HUTCHINS NO 1 1942.
 HV6784'
 HV6784'REFERENCE MARK 2 IS S OF THE STATION, 2 FEET E OF THE E SIDE OF
 HV6784'THE COTTAGE.  IT IS SET FLUSH WITH THE GROUND AND IS STAMPED
 HV6784'HUTCHINS NO 2 1942.
 HV6784'
 HV6784'DISTANCE AND DIRECTION WAS MEASURED TO A MARYLAND SHELL FISH
 HV6784'SURVEY MONUMENT.  IT IS AN 8-INCH SQUARE CONCRETE POST PROJECTING
 HV6784'ABOUT 4 INCHES.  A TRIANGLE AND THE LETTERS MSFC USCS ARE
 HV6784'COUNTERSUNK IN THE TOP.  THIS MARK IS W OF THE STATION AND ABOUT 1
 HV6784'FOOT FROM THE RIVER BANK.  DUE TO ITS PROXIMITY TO THE RIVER BANK
 HV6784'THIS MARK WILL PROBABLY BE LOST OR SHIFTED IN A SHORT TIME.
 HV6784'
 HV6784'TO REACH THE STATION FROM HOLLYWOOD, GO N ON STATE HIGHWAY 235 FOR
 HV6784'1.8 MILES TO A GRAVEL ROAD RIGHT AT SIGN OLD PATUXENT.  TURN
 HV6784'RIGHT ON THE GRAVEL ROAD AND GO 1.6 MILES TO A SIDE ROAD RIGHT.
 HV6784'TURN RIGHT ACROSS A SMALL BRIDGE, THEN UPHILL AND GO 1.75 MILES TO
 HV6784'THE END OF THE ROAD AT A WHITE SUMMER COTTAGE AND THE STATION.
 HV6784'
 HV6784'OBSERVATIONS FROM A 4-FOOT WOODEN STAND.
 HV6784'
 HV6784'STATIONS BRISCOE 1934, ISLAND, COLE 2, AND POINT FARM 1934 ARE
 HV6784'INTERVISIBLE FROM THE GROUND.
 HV6784'
 HV6784'HEIGHT OF LIGHT ABOVE STATION MARK 2 METERS.
 HV6784
 HV6784                          STATION RECOVERY (1974)
 HV6784
 HV6784'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 HV6784'HUTCHINS 1942 GOOD MSFC - (RM) USCS FAIR
 HV6784'
 HV6784'HUTCHINS 1 1942 GOOD
 HV6784'
 HV6784'HUTCHINS 2 1942 DESTROYED.
 HV6784'
 HV6784'STA. AND RMS 1 AND MSFC RECOVD AS DESCRIBED.  RM2 DESTYD BY
 HV6784'ADDIT. TO HOUSE.  STA. IS 48 FT FROM THE NE CORNER AND 49 FT FROM
 HV6784'THE NW CORNER OF HOUSE.  MSFC MONUMENT IS LEANING TO NORTH AS A
 HV6784'RESULT OF BANK WASHING AWAY.
 HV6784
 HV6784                          STATION RECOVERY (1979)
 HV6784
 HV6784'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 HV6784'THE STATION MARK, REFERENCE MARK ONE AND HUTCHINS MSFC RM 1908 WERE
 HV6784'RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE MARK TWO WAS
 HV6784'DESTROYED BY THE CONSTRUCTION OF A NEW HOUSE.  A NEW REFERENCE MARK
 HV6784'THREE WAS ESTABLISHED.  IT IS POSSIBLE THAT THE MSFC RM WAS DISTURBED
 HV6784'MAY HAVE BEEN DISTURBED.  A SHORTER DISTANCE OF 0.04 FOOT OR 0.015
 HV6784'METER WAS NOTED TO REFERENCE MARK ONE.  IT IS BELIEVED THE PREVIOUS
 HV6784'MEASURMENT WAS A SLOPE DISTANCE.  A LONGER DISTANCE OF 0.14 FOOT OR
 HV6784'0.042 METER WAS NOTED TO THE MSFC RM.  A DIFFERENCE OF 13 MINUTES
 HV6784'AND 42 SECONDS IN DIRECTION WAS NOTED BETWEEN REFERENCE MARK ONE
 HV6784'AND THE MSFC RM.  THERE IS NO SUITABLE LOCATION TO SET AN AZIMUTH
 HV6784'MARK.
 HV6784'
 HV6784'A COMPLETE NEW DESCRIPTION FOLLOWS.
 HV6784'
 HV6784'THE STATION IS LOCATED ABOUT 3 AIRLINE MILES NORTHEAST OF
 HV6784'LEONARDSTOWN, 2-1/2 MILES NORTHWEST OF SOLOMONS AND 1 MILE NORTHEAST
 HV6784'OF HOLLYWOOD.  IT IS ON THE SOUTHWEST SHORE OF THE PATUXENT RIVER, ON
 HV6784'CAPTAIN POINT AND JUST WEST OF THE MOUTH OF THOMAS CREEK.  THE
 HV6784'PROPERTY IS OWNED BY MR. ROBERT F. CHAPMAN, RD. 1 BOX 165, HOLLYWOOD,
 HV6784'MARYLAND.
 HV6784'
 HV6784'TO REACH THE STATION FROM THE POST OFFICE IN HOLLYWOOD, GO NORTHWEST
 HV6784'ON STATE HIGHWAY 235 FOR 2.65 MILES TO A SIDE ROAD RIGHT.  TURN RIGHT
 HV6784'AND GO NORTHWEST ON JONES WHARF ROAD FOR 1.65 MILES TO A SIDE ROAD
 HV6784'RIGHT.  TURN RIGHT AND GO SOUTHEAST ON DRUM CLIFF ROAD FOR 1.5 MILE
 HV6784'TO THE END OF THE PAVED ROAD AT A 2 STORY HOUSE.  TURN RIGHT AND
 HV6784'FOLLOW A WINDING SAND ROAD IN A EASTERLY DIRECTION FOR 0.2 MILE TO
 HV6784'THE END OF THE ROAD AND THE STATION ON THE LEFT BETWEEN THE SHORE AND
 HV6784'MR. CHAPMANS HOUSE.
 HV6784'
 HV6784'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 HV6784'STAMPED---HUTCHINS 2 1942---SET INTO THE TOP OF A SQUARE CONCRETE
 HV6784'MONUMENT 30 CM (12 INCHES) ON SIDE FLUSH WITH THE GROUND LOCATED
 HV6784'22.10 METERS (72.5 FEET) W FROM A FLAG POLE, 14.94 METERS (49.0 FEET)
 HV6784'NE FROM THE NORTHWEST CORNER OF MR. CHAPMANS HOME, 14.63 METERS (48.0
 HV6784'FEET) NE FROM THE NORTHEAST CORNER, AND 4.57 METERS (15.0 FEET) S
 HV6784'FROM A BLUFF.
 HV6784'
 HV6784'REFERENCE MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 HV6784'NOS) DISK STAMPED---HUTCHINS 2 NO 1 1942---SET INTO THE TOP OF A
 HV6784'SQUARE CONCRETE MONUMENT 30 CM (12 INCHES) ON SIDE FLUSH WITH THE
 HV6784'GROUND LOCATED 23.16 METERS (76.0 FEET) E FROM THE NORTHWEST CORNER
 HV6784'OF MR. CHAPMANS HOUSE, 16.76 METERS (55.0 FEET) NE FROM THE NORTHEAST
 HV6784'CORNER OF THE HOUSE, 10.06 METERS (33.0 FEET) S FROM THE BLUFF, 7.92
 HV6784'METERS (26.0 FEET) W FROM THE FLAG POLE, AND 0.3 METER (1 FOOT) LOWER
 HV6784'THAN THE STATION.
 HV6784'
 HV6784'REFERENCE MARK NO. 3 IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HV6784'STAMPED---HUTCHINS 2 1842 NO 3 1979---CEMENTED IN A DRILL HOLE IN
 HV6784'THE LOWER STEP FOR THE NORTH ENTRANCE TO MR. CHAPMANS HOUSE.  IT IS
 HV6784'IN THE WEST PART OF THE 20 FOOT LONG STEP AND IT PROJECTS 6-INCHES
 HV6784'ABOVE THE GROUND.  IT IS LOCATED 17.7 METERS (58 FEET) S FROM THE
 HV6784'BLUFF, 1.95 METERS (6.4 FEET) NE FROM THE NORTHWEST CORNER OF THE
 HV6784'HOUSE, 0.18 METER (0.6 FOOT) SW FROM THE NORTHEAST EDGE OF THE STEP,
 HV6784'0.12 METER (0.4 FOOT) SE FROM THE NORTHWEST EDGE OF THE STEP, AND 0.3
 HV6784'METER (1 FOOT) HIGHER THAN THE STATION.
 HV6784'
 HV6784'HUTCHINS MSFC RM 1908 IS AN 8-INCH SQUARE
 HV6784'CONCRETE MONUMENT WITH A 4-INCH TRIANGLE CARVED IN THE TOP WITH MSFC
 HV6784'USGS SURROUNDING THE TRIANGLE AND IT PROJECTS 6-INCHES. LOCATED 18.90
 HV6784'METERS (62.0 FEET) N FROM THE NORTHEAST CORNER OF THE HOUSE, 14.63
 HV6784'METERS (48.0 FEET) NNE FROM THE NORTHWEST CORNER OF THE HOUSE, AND
 HV6784'0.91 METER (3.0 FEET) S FROM THE BLUFF.
 HV6784
 HV6784                          STATION RECOVERY (1982)
 HV6784
 HV6784'RECOVERY NOTE BY MD DEPT OF NAT RES 1982 (LW)
 HV6784'HUTCHINS 1942 FOUND AS DESCRIBED-ON PROPERTY OF MR. ROBERT F.
 HV6784'CHAPMAN GRAVEL ROAD NOW BLACKTOP (JONES WHARF RD.).  SIDE ROAD
 HV6784'RIGHT NOW HARD SURFACE (DRUMCLIFF RD.) HOUSE .1 MI PAST END OF
 HV6784'HARD SURFACE RD. ON GRAVEL RD.
 HV6784'
 HV6784'HUTCHINS NO 2 1942 GOOD 25.5 FEET NW WHITE FLAGPOLE.  32.1 FEET S
 HV6784'OF SELY OF 2 12 INCH LOCUST TREES.
 HV6784'
 HV6784'HUTCHINS NO 3 1979 GOOD NW CORNER CONCRETE STEPS ON N SIDE OF HOUSE.
 HV6784'
 HV6784'MSFC-USCS FAIR EXPOSED 6 INCH AT TOP OF BANK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6782 ***********************************************************************
 HV6782  DESIGNATION -  HUTCHINS MSFC 1908
 HV6782  PID         -  HV6782
 HV6782  STATE/COUNTY-  MD/ST MARYS
 HV6782  COUNTRY     -  US
 HV6782  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6782
 HV6782                         *CURRENT SURVEY CONTROL
 HV6782  ______________________________________________________________________
 HV6782* NAD 83(1993) POSITION- 38 23 17.82394(N) 076 33 06.49434(W)   ADJUSTED
 HV6782* NAVD 88 ORTHO HEIGHT -    11.    (meters)       36.    (feet) SCALED
 HV6782  ______________________________________________________________________
 HV6782  GEOID HEIGHT    -        -34.092 (meters)                     GEOID18
 HV6782  LAPLACE CORR    -         -5.59  (seconds)                    DEFLEC18
 HV6782  HORZ ORDER      -  SECOND
 HV6782
 HV6782.The horizontal coordinates were established by classical geodetic methods
 HV6782.and adjusted by the National Geodetic Survey in November 1994.
 HV6782
 HV6782.The orthometric height was scaled from a topographic map.
 HV6782
 HV6782.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6782.GEOID18 height accuracy estimate available here.
 HV6782
 HV6782.Click photographs - Photos may exist for this station.
 HV6782
 HV6782.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6782
 HV6782. The following values were computed from the NAD 83(1993) position.
 HV6782
 HV6782;                    North         East     Units Scale Factor Converg.
 HV6782;SPC MD       -    80,198.744   439,156.979   MT  0.99998581   +0 16 52.7
 HV6782;SPC MD       -   263,118.71  1,440,800.86   sFT  0.99998581   +0 16 52.7
 HV6782;UTM  18      - 4,250,037.271   364,473.419   MT  0.99982620   -0 57 49.7
 HV6782
 HV6782!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6782!SPC MD       -   1.00000367  x   0.99998581  =   0.99998948
 HV6782!UTM  18      -   1.00000367  x   0.99982620  =   0.99982987
 HV6782
 HV6782:                Primary Azimuth Mark                     Grid Az
 HV6782:SPC MD       -  BARS MSFC 1908                           111 35 56.6
 HV6782:UTM  18      -  BARS MSFC 1908                           112 50 39.0
 HV6782
 HV6782_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6447350037(NAD 83)
 HV6782
 HV6782|---------------------------------------------------------------------|
 HV6782| PID    Reference Object                     Distance      Geod. Az  |
 HV6782|                                                           dddmmss.s |
 HV6782| HV6771 PEAK                                APPROX. 3.5 KM 0500707.3 |
 HV6782| HV6760 BARS MSFC 1908                      APPROX. 1.4 KM 1115249.3 |
 HV6782| HV6779 HUTCHINS RM                           7.546 METERS 23939     |
 HV6782|---------------------------------------------------------------------|
 HV6782
 HV6782                          SUPERSEDED SURVEY CONTROL
 HV6782
 HV6782  NAD 83(1991)-  38 23 17.82388(N)    076 33 06.49494(W) AD(       ) 2
 HV6782  NAD 83(1986)-  38 23 17.82356(N)    076 33 06.50896(W) AD(       ) 2
 HV6782  NAD 27      -  38 23 17.37400(N)    076 33 07.67000(W) AD(       ) 2
 HV6782  USSD        -  38 23 17.73500(N)    076 33 07.41200(W) AD(       ) 3
 HV6782
 HV6782.Superseded values are not recommended for survey control.
 HV6782
 HV6782.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6782.See file dsdata.pdf to determine how the superseded data were derived.
 HV6782
 HV6782_MARKER: N = NAIL
 HV6782_SETTING: 0 = UNSPECIFIED SETTING
 HV6782_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV6782
 HV6782  HISTORY     - Date     Condition        Report By
 HV6782  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6782  HISTORY     - 1930     GOOD             MDDNR
 HV6782  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6782
 HV6782                          STATION DESCRIPTION
 HV6782
 HV6782'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6782'STATION IS ON THE SW SHORE OF THE PATUXENT RIVER, OPPOSITE BROOME
 HV6782'ISLAND, ON CAPTAIN POINT, JUST W OF THE MOUTH OF ST. THOMAS CREEK.
 HV6782'STATION IS IN GARDEN ON POINT OF BLUFF 50 FEET HIGH, ON HUTCHINS
 HV6782'ESTATE, NEAR HOUSE OCCUPIED BY MR. GADDEN, ABOUT 6 YARDS S BY E OF
 HV6782'EXTREME POINT OF BLUFF, 2 YARDS SW OF EDGE OF BLUFF, 4 YARDS SE OF
 HV6782'EDGE OF BLUFF, 30 YARDS N BY W FROM HOUSE, 30 YARDS W OF WIRE
 HV6782'FENCE RUNNING N AND S, AND 15 YARDS E OF ANOTHER N-S WIRE FENCE.
 HV6782'STATION MARK IS NAIL IN STUB WITH TOP FLUSH WITH GROUND.
 HV6782'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 HV6782'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6782'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.
 HV6782'THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 HV6782'REFERENCE MARK IS 7.57 METERS (24.84 FEET) FROM STATION S 59 DEG
 HV6782'39 MIN W. DISTANCES AND BEARINGS FROM THE STATION OF
 HV6782'OTHER POINTS OF REFERENCE ARE AS FOLLOWS--RIGHT FRONT CORNER OF
 HV6782'GADDEN HOUSE, 28.57 METERS (93.7 FEET), S 16 DEG 49 MIN W. NEAR
 HV6782'CORNER OF WELL HOUSE, 30.44 METERS (99.9 FEET), S 34 DEG 8 MIN W.
 HV6782'NEAR CORNER OF SHED, 45 YARDS, S 51 DEG 36 MIN W. NAIL IN BLAZE IN
 HV6782'22-INCH APPLE TREE, 9.35 METERS (30.68 FEET), S 79 DEG 59 MIN W.
 HV6782'RIGHT TANGENT OF PARKERS WHARF, 2 1/2 MILES, N 19 DEG 55 MIN W.
 HV6782'GILT BALL ON BROOME HOUSE ON BROOME ISLAND, 1-1/2 MILES, N 1 DEG
 HV6782'48 MIN E.  TIP OF TOWER ON PETERSON HOUSE, 2-1/2 MILES, N 84 DEG
 HV6782'35 MIN E.  LEFT CORNER OF EXTENSION OF GADDEN HOUSE, 30.90 METERS
 HV6782'(101.4 FEET), S 9 DEG 50 MIN E.
 HV6782
 HV6782                          STATION RECOVERY (1930)
 HV6782
 HV6782'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV6782'STATION RECOVERED AND CROSS MARKERS SET UP.
 HV6782
 HV6782                          STATION RECOVERY (1943)
 HV6782
 HV6782'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6782'NO TRACE OF THIS STATION WAS FOUND AFTER A THOROUGH SEARCH.  THE
 HV6782'REFERENCE MARK, WHICH IS NOW SERVING AS A REFERENCE MARK FOR
 HV6782'HUTCHINS 2, WAS FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6779 ***********************************************************************
 HV6779  DESIGNATION -  HUTCHINS RM
 HV6779  PID         -  HV6779
 HV6779  STATE/COUNTY-  MD/ST MARYS
 HV6779  COUNTRY     -  US
 HV6779  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6779
 HV6779                         *CURRENT SURVEY CONTROL
 HV6779  ______________________________________________________________________
 HV6779* NAD 83(1993) POSITION- 38 23 17.70029(N) 076 33 06.76265(W)   ADJUSTED
 HV6779* NAVD 88 ORTHO HEIGHT -    11.    (meters)       36.    (feet) SCALED
 HV6779  ______________________________________________________________________
 HV6779  GEOID HEIGHT    -        -34.091 (meters)                     GEOID18
 HV6779  LAPLACE CORR    -         -5.59  (seconds)                    DEFLEC18
 HV6779  HORZ ORDER      -  SECOND
 HV6779
 HV6779.The horizontal coordinates were established by classical geodetic methods
 HV6779.and adjusted by the National Geodetic Survey in November 1994.
 HV6779
 HV6779.The orthometric height was scaled from a topographic map.
 HV6779
 HV6779.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6779.GEOID18 height accuracy estimate available here.
 HV6779
 HV6779.Click photographs - Photos may exist for this station.
 HV6779
 HV6779.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6779
 HV6779. The following values were computed from the NAD 83(1993) position.
 HV6779
 HV6779;                    North         East     Units Scale Factor Converg.
 HV6779;SPC MD       -    80,194.899   439,150.487   MT  0.99998582   +0 16 52.5
 HV6779;SPC MD       -   263,106.10  1,440,779.56   sFT  0.99998582   +0 16 52.5
 HV6779;UTM  18      - 4,250,033.569   364,466.845   MT  0.99982622   -0 57 49.8
 HV6779
 HV6779!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6779!SPC MD       -   1.00000367  x   0.99998582  =   0.99998949
 HV6779!UTM  18      -   1.00000367  x   0.99982622  =   0.99982989
 HV6779
 HV6779_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6446650033(NAD 83)
 HV6779
 HV6779                          SUPERSEDED SURVEY CONTROL
 HV6779
 HV6779  NAD 83(1991)-  38 23 17.70021(N)    076 33 06.76330(W) AD(       ) 2
 HV6779  NAD 83(1986)-  38 23 17.69989(N)    076 33 06.77733(W) AD(       ) 2
 HV6779  NAD 27      -  38 23 17.25000(N)    076 33 07.93600(W) AD(       ) 2
 HV6779
 HV6779.Superseded values are not recommended for survey control.
 HV6779
 HV6779.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6779.See file dsdata.pdf to determine how the superseded data were derived.
 HV6779
 HV6779_MARKER: U = CONCRETE POST
 HV6779_SETTING: 0 = UNSPECIFIED SETTING
 HV6779
 HV6779  HISTORY     - Date     Condition        Report By
 HV6779  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6779
 HV6779                          STATION DESCRIPTION
 HV6779
 HV6779'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908
 HV6779'STATION IS ON THE SW SHORE OF THE PATUXENT RIVER, OPPOSITE BROOME
 HV6779'ISLAND, ON CAPTAIN POINT, JUST W OF THE MOUTH OF THOMAS CREEK, IN
 HV6779'THE LAWN IN FRONT OF A SUMMER COTTAGE, AND ON A POINT OF BLUFF
 HV6779'ABOUT 50 FEET HIGH.  IT IS 85 FEET NE OF THE NW CORNER OF THE
 HV6779'COTTAGE AND 15 FEET S OF THE BLUFF.  IT IS FLUSH WITH THE LAWN
 HV6779'AND IS STAMPED HUTCHINS 1942.
 HV6779'
 HV6779'DISTANCE AND DIRECTION WAS MEASURED TO A MARYLAND SHELL FISH
 HV6779'SURVEY MONUMENT.  IT IS AN 8-INCH SQUARE CONCRETE POST PROJECTING
 HV6779'ABOUT 4 INCHES.  A TRIANGLE AND THE LETTERS MSFC USCS ARE
 HV6779'COUNTERSUNK IN THE TOP.  THIS MARK IS W OF THE STATION AND ABOUT 1
 HV6779'FOOT FROM THE RIVER BANK.  DUE TO ITS PROXIMITY TO THE RIVER BANK
 HV6779'THIS MARK WILL PROBABLY BE LOST OR SHIFTED IN A SHORT TIME.
 HV6779'
 HV6779'TO REACH THE STATION FROM HOLLYWOOD, GO N ON STATE HIGHWAY 235 FOR
 HV6779'1.8 MILES TO A GRAVEL ROAD RIGHT AT SIGN OLD PATUXENT.  TURN
 HV6779'RIGHT ON THE GRAVEL ROAD AND GO 1.6 MILES TO A SIDE ROAD RIGHT.
 HV6779'TURN RIGHT ACROSS A SMALL BRIDGE, THEN UPHILL AND GO 1.75 MILES TO
 HV6779'THE END OF THE ROAD AT A WHITE SUMMER COTTAGE AND THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6232 ***********************************************************************
 DN6232  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6232  DESIGNATION -  HUTTON
 DN6232  PID         -  DN6232
 DN6232  STATE/COUNTY-  MD/CECIL
 DN6232  COUNTRY     -  US
 DN6232  USGS QUAD   -  ELKTON (2016)
 DN6232
 DN6232                         *CURRENT SURVEY CONTROL
 DN6232  ______________________________________________________________________
 DN6232* NAD 83(2011) POSITION- 39 35 16.37662(N) 075 47 25.84157(W)   ADJUSTED
 DN6232* NAD 83(2011) ELLIP HT-   -15.498 (meters)        (06/27/12)   ADJUSTED
 DN6232* NAD 83(2011) EPOCH   -  2010.00
 DN6232* NAVD 88 ORTHO HEIGHT -    17.66  (meters)       57.9   (feet) GPS OBS
 DN6232  ______________________________________________________________________
 DN6232  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6232  GEOID HEIGHT    -        -33.135 (meters)                     GEOID03
 DN6232  GEOID HEIGHT    -        -33.154 (meters)                     GEOID18
 DN6232  NAD 83(2011) X  -  1,208,188.676 (meters)                     COMP
 DN6232  NAD 83(2011) Y  - -4,771,392.374 (meters)                     COMP
 DN6232  NAD 83(2011) Z  -  4,042,817.792 (meters)                     COMP
 DN6232  LAPLACE CORR    -          1.52  (seconds)                    DEFLEC18
 DN6232
 DN6232  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6232  Standards:
 DN6232         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6232            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6232  -------------------------------------------------------------------
 DN6232  NETWORK    0.60   1.10           0.28   0.19   0.56      0.07023272
 DN6232  -------------------------------------------------------------------
 DN6232  Click here for local accuracies and other accuracy information.
 DN6232
 DN6232.The horizontal coordinates were established by GPS observations
 DN6232.and adjusted by the National Geodetic Survey in June 2012.
 DN6232
 DN6232.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6232.been affixed to the stable North American tectonic plate. See 
 DN6232.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6232
 DN6232.The horizontal coordinates are valid at the epoch date displayed above
 DN6232.which is a decimal equivalence of Year/Month/Day.
 DN6232
 DN6232.The orthometric height was determined by GPS observations and a
 DN6232.high-resolution geoid model using precise GPS observation and
 DN6232.processing techniques.
 DN6232
 DN6232.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6232.GEOID18 height accuracy estimate available here.
 DN6232
 DN6232.Click photographs - Photos may exist for this station.
 DN6232
 DN6232.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6232
 DN6232.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6232
 DN6232.The ellipsoidal height was determined by GPS observations
 DN6232.and is referenced to NAD 83.
 DN6232
 DN6232. The following values were computed from the NAD 83(2011) position.
 DN6232
 DN6232;                    North         East     Units Scale Factor Converg.
 DN6232;SPC MD       -   213,960.611   503,900.871   MT  1.00002703   +0 45 32.8
 DN6232;SPC MD       -   701,969.10  1,653,214.77   sFT  1.00002703   +0 45 32.8
 DN6232;UTM  18      - 4,382,316.256   432,117.862   MT  0.99965673   -0 30 13.6
 DN6232
 DN6232!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6232!SPC MD       -   1.00000243  x   1.00002703  =   1.00002946
 DN6232!UTM  18      -   1.00000243  x   0.99965673  =   0.99965916
 DN6232
 DN6232_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3211782316(NAD 83)
 DN6232
 DN6232                          SUPERSEDED SURVEY CONTROL
 DN6232
 DN6232  NAD 83(2007)-  39 35 16.37679(N)    075 47 25.84208(W) AD(2002.00) 1
 DN6232  ELLIP H (02/23/12)  -15.459  (m)                       GP(2002.00) 4 1
 DN6232
 DN6232.Superseded values are not recommended for survey control.
 DN6232
 DN6232.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6232.See file dsdata.pdf to determine how the superseded data were derived.
 DN6232
 DN6232_MARKER: DD = SURVEY DISK
 DN6232_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6232_STAMPING: HUTTON 2008
 DN6232_MARK LOGO: MD-015
 DN6232_PROJECTION: FLUSH
 DN6232_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6232_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6232+STABILITY: SURFACE MOTION
 DN6232_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6232+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6232
 DN6232  HISTORY     - Date     Condition        Report By
 DN6232  HISTORY     - 20081204 MONUMENTED       GWS
 DN6232
 DN6232                          STATION DESCRIPTION
 DN6232
 DN6232'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6232'THE STATION IS LOCATED ABOUT 5.3 MI (8.5 KM) SOUTH-SOUTHEAST OF ELK
 DN6232'MILLS, 4.0 MI (6.4 KM) NORTH-NORTHEAST OF CHESAPEAKE CITY AND 2.6 MI
 DN6232'(4.2 KM) EAST-SOUTHEAST OF ELKTON.
 DN6232'
 DN6232'TO REACH FROM THE JUNCTION OF MD 213 AND US 40, GO EAST-SOUTHEAST ON
 DN6232'US 40 FOR 1.45 MI (2.3 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT
 DN6232'AND GO SOUTH-SOUTHEAST ON MALONEY ROAD FOR 1.05 MI (1.7 KM) TO A SIDE
 DN6232'ROAD ON THE LEFT.  TURN LEFT AND GO EAST-NORTHEAST ON FRENCHTOWN ROAD
 DN6232'FOR 0.09 MI (0.1 KM) TO AN INTERSECTION.  TURN RIGHT AND GO
 DN6232'SOUTH-SOUTHEAST ON HUTTON ROAD FOR 0.06 MI (0.1 KM) TO THE STATION ON
 DN6232'THE RIGHT.
 DN6232'
 DN6232'IT IS A CECIL COUNTY SURVEY DISK SET IN A 12-INCH (30 CM) ROUND
 DN6232'CONCRETE MONUMENT, 307 FT (93.6 M) SOUTH OF FRENCHTOWN ROAD, 1.9 FT
 DN6232'(0.6 M) SOUTHWEST OF THE SOUTHWEST EDGE OF PAVING, 29.3 FT (8.9 M)
 DN6232'NORTH-NORTHWEST OF A UTILITY POLE (CONECTIV 41754/37684) AND 86.1 FT
 DN6232'(26.2 M) SOUTH-SOUTHEAST OF A UTILITY POLE (CONECTIV 41750/37698).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3550 ***********************************************************************
 JV3550  DESIGNATION -  HUTZEL
 JV3550  PID         -  JV3550
 JV3550  STATE/COUNTY-  MD/WASHINGTON
 JV3550  COUNTRY     -  US
 JV3550  USGS QUAD   -  FUNKSTOWN (2017)
 JV3550
 JV3550                         *CURRENT SURVEY CONTROL
 JV3550  ______________________________________________________________________
 JV3550* NAD 83(1991) POSITION- 39 36 54.78419(N) 077 44 20.07929(W)   ADJUSTED
 JV3550* NAVD 88 ORTHO HEIGHT -   183.517 (meters)      602.09  (feet) ADJUSTED
 JV3550  ______________________________________________________________________
 JV3550  GEOID HEIGHT    -        -34.142 (meters)                     GEOID18
 JV3550  LAPLACE CORR    -          3.85  (seconds)                    DEFLEC18
 JV3550  DYNAMIC HEIGHT  -        183.408 (meters)      601.73  (feet) COMP
 JV3550  MODELED GRAVITY -    980,032.9   (mgal)                       NAVD 88
 JV3550
 JV3550  HORZ ORDER      -  SECOND
 JV3550  VERT ORDER      -  SECOND    CLASS 0
 JV3550
 JV3550.The horizontal coordinates were established by classical geodetic methods
 JV3550.and adjusted by the National Geodetic Survey in January 1992.
 JV3550
 JV3550.The orthometric height was determined by differential leveling and
 JV3550.adjusted by the NATIONAL GEODETIC SURVEY
 JV3550.in June 1991.
 JV3550
 JV3550.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3550.GEOID18 height accuracy estimate available here.
 JV3550
 JV3550.Click photographs - Photos may exist for this station.
 JV3550
 JV3550.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3550
 JV3550.The dynamic height is computed by dividing the NAVD 88
 JV3550.geopotential number by the normal gravity value computed on the
 JV3550.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3550.degrees latitude (g = 980.6199 gals.).
 JV3550
 JV3550.The modeled gravity was interpolated from observed gravity values.
 JV3550
 JV3550. The following values were computed from the NAD 83(1991) position.
 JV3550
 JV3550;                    North         East     Units Scale Factor Converg.
 JV3550;SPC MD       -   216,564.169   336,547.404   MT  1.00003308   -0 27 49.6
 JV3550;SPC MD       -   710,510.94  1,104,155.94   sFT  1.00003308   -0 27 49.6
 JV3550;SPC PA S     -    31,299.427   600,952.295   MT  1.00006496   +0 00 25.9
 JV3550;SPC PA S     -   102,688.20  1,971,624.32   sFT  1.00006496   +0 00 25.9
 JV3550;SPC WV N     -   125,290.445   751,208.245   MT  0.99994076   +1 07 23.4
 JV3550;SPC WV N     -   411,057.07  2,464,589.05   sFT  0.99994076   +1 07 23.4
 JV3550;UTM  18      - 4,388,636.329   264,883.506   MT  1.00028064   -1 44 49.9
 JV3550
 JV3550!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3550!SPC MD       -   0.99997657  x   1.00003308  =   1.00000965
 JV3550!SPC PA S     -   0.99997657  x   1.00006496  =   1.00004152
 JV3550!SPC WV N     -   0.99997657  x   0.99994076  =   0.99991733
 JV3550!UTM  18      -   0.99997657  x   1.00028064  =   1.00025720
 JV3550
 JV3550:                Primary Azimuth Mark                     Grid Az
 JV3550:SPC MD       -  HUTZEL AZ MK                             228 07 00.7
 JV3550:SPC PA S     -  HUTZEL AZ MK                             227 38 45.2
 JV3550:SPC WV N     -  HUTZEL AZ MK                             226 31 47.7
 JV3550:UTM  18      -  HUTZEL AZ MK                             229 24 01.0
 JV3550
 JV3550_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6488388636(NAD 83)
 JV3550
 JV3550|---------------------------------------------------------------------|
 JV3550| PID    Reference Object                     Distance      Geod. Az  |
 JV3550|                                                           dddmmss.s |
 JV3550| JV4706 HAGERSTOWN WEST MD RR SHOP STK      APPROX. 2.7 KM 0091929.9 |
 JV3550| JV4714 HAGERSTOWN ST MARYS CATH CH         APPROX. 3.5 KM 0200447.2 |
 JV3550| JV4710 HAGERSTOWN ST JOHNS EPIS CH         APPROX. 3.3 KM 0203524.8 |
 JV3550| JV4705 HAGERSTOWN RADIO STA WARK MAST      APPROX. 2.8 KM 0622102.9 |
 JV3550| JV3551 HUTZEL RM 1                          23.156 METERS 10747     |
 JV3550| JV3552 HUTZEL RM 2                          22.132 METERS 20454     |
 JV3550| CK7527 HUTZEL AZ MK                                       2273911.1 |
 JV3550|---------------------------------------------------------------------|
 JV3550
 JV3550                          SUPERSEDED SURVEY CONTROL
 JV3550
 JV3550  NAD 83(1986)-  39 36 54.78395(N)    077 44 20.08949(W) AD(       ) 2
 JV3550  NAD 27      -  39 36 54.43400(N)    077 44 21.11400(W) AD(       ) 2
 JV3550  NGVD 29             183.72   (m)          602.8    (f) LEVELING    3  
 JV3550  NGVD 29 (11/26/84)  183.724  (m)          602.77   (f) ADJUSTED    2 0
 JV3550
 JV3550.Superseded values are not recommended for survey control.
 JV3550
 JV3550.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3550.See file dsdata.pdf to determine how the superseded data were derived.
 JV3550
 JV3550_MARKER: DD = SURVEY DISK
 JV3550_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV3550_STAMPING: HUTZEL 1954
 JV3550_MARK LOGO: MDBCSM
 JV3550_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3550
 JV3550  HISTORY     - Date     Condition        Report By
 JV3550  HISTORY     - 1955     MONUMENTED       MDBCSM
 JV3550  HISTORY     - 1958     GOOD             CGS
 JV3550  HISTORY     - 1958     GOOD             CGS
 JV3550  HISTORY     - 1962     GOOD             MDDT
 JV3550  HISTORY     - 1971     GOOD             MDDT
 JV3550  HISTORY     - 20040326 MARK NOT FOUND   DEWDAV
 JV3550  HISTORY     - 20080315 MARK NOT FOUND   GEOCAC
 JV3550
 JV3550                          STATION DESCRIPTION
 JV3550
 JV3550'DESCRIBED BY MD BUR SURV AND MAPS 1955 (WFD)
 JV3550'THE STATION IS LOCATED ABOUT 2.5 MILES SOUTH-SOUTHWEST OF THE
 JV3550'CENTER OF HAGERSTOWN, 0.15 MILE NORTHEAST OF A RAILROAD CROSSING,
 JV3550'0.05 MILE SOUTHEAST OF THE DOWNSVILLE PIKE, 4 FEET WEST OF A
 JV3550'WHITE 4 IN X 4 IN WITNESS POST, AND ON LAND OWNED BY THE NORFOLK
 JV3550'AND WESTERN RAILROAD.
 JV3550'
 JV3550'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 40 AND
 JV3550'ALT. 40 IN HAGERSTOWN, GO SOUTH ON ALT. U.S. HIGHWAY 40 FOR
 JV3550'1.4 MILES TO E WILSON BLVD. (DIVIDED STREET) ON THE RIGHT, TURN
 JV3550'RIGHT (WEST) AND GO ON THE WILSON BLVD. FOR 0.8 MILE TO THE
 JV3550'JUNCTION OF STATE HIGHWAY 65 (S POTOMAC STREET), TURN LEFT
 JV3550'(SOUTH) AND GO ONE BLOCK TO THE DOWNSVILLE PIKE, TURN RIGHT ON
 JV3550'THE DOWNSVILLE PIKE AND GO FOR 1 MILE TO A RAILROAD CROSSING,
 JV3550'TURN SHARP LEFT AND FOLLOW A TRACK ROAD UP HILL FOR ABOUT 0.15
 JV3550'MILE TO THE HIGHEST POINT AND THE STATION.
 JV3550'
 JV3550'TO REACH THE AZIMUTH MARK FROM THE RAILROAD CROSSING, GO
 JV3550'SOUTH-SOUTHWEST ON THE DOWNSVILLE PIKE FOR 0.1 MILE TO THE
 JV3550'MARK ON THE LEFT AS DESCRIBED BELOW.
 JV3550'
 JV3550'THE STATION MARK IS A STANDARD MARYLAND BUREAU OF CONTROL SURVEY
 JV3550'DISK SET IN THE TOP OF A 6-INCH TILE, WHICH PROJECTS 2 INCHES, AND
 JV3550'THE DISK IS STAMPED HUTZEL (BCS) 1954.
 JV3550'
 JV3550'REFERENCE MARK 1 IS 24 FEET NORTHWEST OF A WIRE FENCE.  THE MARK
 JV3550'PROJECTS 2 INCHES, AND THE DISK IS STAMPED HUTZEL BCS NO 1 1955.
 JV3550'
 JV3550'REFERENCE MARK 2 IS 96 FEET NORTHWEST OF THE WIRE FENCE.  THE MARK
 JV3550'PROJECTS 2 INCHES, AND THE DISK IS STAMPED HUTZEL BCS NO 2 1955.
 JV3550'
 JV3550'THE AZIMUTH MARK IS 90 FEET NORTHWEST OF A POWERLINE POLE, 90 FEET
 JV3550'SOUTH OF THE CENTER OF THE DOWNSVILLE PIKE, (NOW UNDER
 JV3550'CONSTRUCTION), 52 FEET SOUTH OF A WIRE FENCE AND A WHITE 4 IN X
 JV3550'4 IN WITNESS POST.  THE MARK IS A STANDARD AZIMUTH MARK DISK SET
 JV3550'IN CEMENT IN A DRILL HOLE IN A SMALL BOULDER, WHICH PROTRUDES
 JV3550'ABOUT 8 INCHES, AND THE DISK IS STAMPED HUTZEL BCS 1955.
 JV3550'
 JV3550'HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
 JV3550
 JV3550                          STATION RECOVERY (1958)
 JV3550
 JV3550'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV3550'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 JV3550'TO BE IN GOOD CONDITION.  THE DISTANCE AND DIRECTIONS TO THE AZIMUTH
 JV3550'MARK AND REFERENCE MARKS WERE CHECKED AND FOUND TO BE CORRECT.
 JV3550'
 JV3550'THE ORIGINAL DESCRIPTION IS ADEQUATE.
 JV3550
 JV3550                          STATION RECOVERY (1958)
 JV3550
 JV3550'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV3550'3 MI S FROM HAGERSTOWN.
 JV3550'2.1 MILES SOUTHWEST ALONG U.S. HIGHWAY 11 FROM THE COURTHOUSE AT
 JV3550'HAGERSTOWN, THENCE 0.25 MILE SOUTH ALONG GLENSIDE AVENUE, THENCE
 JV3550'0.9 MILE EAST ALONG WEST OAKRIDGE DRIVE, THENCE 0.1 MILE NORTHEAST
 JV3550'ALONG STATE HIGHWAY 632, THENCE 0.1 MILE EAST AND NORTH ALONG A
 JV3550'TRACK ROAD, 3.2 FEET SOUTH OF A WITNESS POST, AND SET IN THE TOP
 JV3550'OF A 6-INCH TILE PIPE FILLED WITH CONCRETE.
 JV3550
 JV3550                          STATION RECOVERY (1962)
 JV3550
 JV3550'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1962
 JV3550'STATION AND REFERENCE MARKS WERE FOUND IN GOOD
 JV3550'CONDITION.  DESCRIPTION OF STATION IS ADEQUATE.  A ONE HOUR SEARCH
 JV3550'WAS MADE FOR THE AZIMUTH MARK AND WAS NOT FOUND.  SHOULD BE
 JV3550'CONSIDERED LOST.
 JV3550'
 JV3550'A NEW DESCRIPTION TO REACH THE STATION FOLLOWS--FROM RAILROAD
 JV3550'TRACKS CROSSING STATE ROUTE 632 (DOWNSVILLE PIKE), GO NORTH
 JV3550'ALONG STATE ROUTE 632 FOR 0.15 MILES TO STATION ON RIGHT ABOUT
 JV3550'200 FEET EAST OF CENTER LINE OF STATE ROUTE 632.
 JV3550
 JV3550                          STATION RECOVERY (1971)
 JV3550
 JV3550'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1971
 JV3550'STATION, REFERENCE MARKS, AND AZIMUTH MARK WERE RECOVERED IN GOOD
 JV3550'CONDITION.  DUE TO HIGHWAY AND INDUSTRIAL CONSTRUCTION, THE 1955
 JV3550'DESCRIPTION IS INADEQUATE FOR RECOVERY.
 JV3550'
 JV3550'TO REACH FROM THE JUNCTION OF MARYLAND ROUTE 65 (SOUTH POTOMAC
 JV3550'STREET) AND WILSON BOULEVARD (NEAR THE SOUTH LIMITS OF HAGERSTOWN)
 JV3550'PROCEED WEST ON WILSON BOULEVARD FOR 0.25 MILE TO THE JUNCTION
 JV3550'OF MARYLAND ROUTE 632 (DOWNSVILLE PIKE) ON THE LEFT, THENCE
 JV3550'SOUTHERLY ON MARYLAND ROUTE 632 FOR 0.9 MILE TO STATION ON THE
 JV3550'LEFT, (0.2 MILE NORTH OF NORFOLK AND WESTERN RAILROAD CROSSING)
 JV3550'82.0 FEET EAST OF TOP OF BANK, 115.1 FEET NORTHEAST OF AN
 JV3550'8-INCH LOCUST TREE, 103.0 FEET WEST OF A WIRE FENCE AND 4.0
 JV3550'FEET WEST OF A 4 IN X 4 IN WITNESS POST.
 JV3550'
 JV3550'AZIMUTH MARK RECOVERED AS DESCRIBED WITH THE FOLLOWING EXCEPTIONS--
 JV3550'
 JV3550'DELETE.  (NOW UNDER CONSTRUCTION),
 JV3550'
 JV3550'DELETE.  A WIRE FENCE, AND
 JV3550'
 JV3550'ADD--AZIMUTH MARK IS LOCATED IN GRASS AREA IN FRONT OF CENTRAL
 JV3550'MANUFACTURING AND WELDING WORKS.
 JV3550
 JV3550                          STATION RECOVERY (2004)
 JV3550
 JV3550'RECOVERY NOTE BY DEWBERRY DAVIS 2004 (KEC)
 JV3550'MARK NOT FOUND.
 JV3550
 JV3550                          STATION RECOVERY (2008)
 JV3550
 JV3550'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3550'MAY BE PRESENT BUT UNDER HEAVY GROUND COVER OF HONEYSUCKLE AND
 JV3550'BRAMBLES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3551 ***********************************************************************
 JV3551  DESIGNATION -  HUTZEL RM 1
 JV3551  PID         -  JV3551
 JV3551  STATE/COUNTY-  MD/WASHINGTON
 JV3551  COUNTRY     -  US
 JV3551  USGS QUAD   -  FUNKSTOWN (2017)
 JV3551
 JV3551                         *CURRENT SURVEY CONTROL
 JV3551  ______________________________________________________________________
 JV3551* NAD 83(1986) POSITION- 39 36 54.55   (N) 077 44 19.15   (W)   HD_HELD1
 JV3551* NAVD 88 ORTHO HEIGHT -   182.471 (meters)      598.66  (feet) ADJUSTED
 JV3551  ______________________________________________________________________
 JV3551  GEOID HEIGHT    -        -34.141 (meters)                     GEOID18
 JV3551  DYNAMIC HEIGHT  -        182.363 (meters)      598.30  (feet) COMP
 JV3551  MODELED GRAVITY -    980,032.9   (mgal)                       NAVD 88
 JV3551
 JV3551  VERT ORDER      -  SECOND    CLASS 0
 JV3551
 JV3551.The horizontal coordinates were determined by differentially corrected
 JV3551.hand held GPS observations or other comparable positioning techniques
 JV3551.and have an estimated accuracy of +/- 3 meters.
 JV3551
 JV3551.The orthometric height was determined by differential leveling and
 JV3551.adjusted by the NATIONAL GEODETIC SURVEY
 JV3551.in June 1991.
 JV3551
 JV3551.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3551.GEOID18 height accuracy estimate available here.
 JV3551
 JV3551.Click photographs - Photos may exist for this station.
 JV3551
 JV3551.The dynamic height is computed by dividing the NAVD 88
 JV3551.geopotential number by the normal gravity value computed on the
 JV3551.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3551.degrees latitude (g = 980.6199 gals.).
 JV3551
 JV3551.The modeled gravity was interpolated from observed gravity values.
 JV3551
 JV3551;                    North         East    Units  Estimated Accuracy
 JV3551;SPC MD       -   216,556.8     336,569.5     MT  (+/- 3 meters HH1 GPS) 
 JV3551
 JV3551_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6490588628(NAD 83)
 JV3551
 JV3551                          SUPERSEDED SURVEY CONTROL
 JV3551
 JV3551  NGVD 29 (11/26/84)  182.678  (m)          599.34   (f) ADJUSTED    2 0
 JV3551
 JV3551.Superseded values are not recommended for survey control.
 JV3551
 JV3551.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3551.See file dsdata.pdf to determine how the superseded data were derived.
 JV3551
 JV3551_MARKER: DR = REFERENCE MARK DISK
 JV3551_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3551_STAMPING: HUTZEL BCS NO 1 1955
 JV3551_MARK LOGO: CGS
 JV3551_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3551+STABILITY: SURFACE MOTION
 JV3551
 JV3551  HISTORY     - Date     Condition        Report By
 JV3551  HISTORY     - 1955     MONUMENTED       MDBCSM
 JV3551  HISTORY     - 1958     GOOD             CGS
 JV3551  HISTORY     - 20080315 MARK NOT FOUND   GEOCAC
 JV3551
 JV3551                          STATION DESCRIPTION
 JV3551
 JV3551'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3551'3 MI S FROM HAGERSTOWN.
 JV3551'2.1 MILES SOUTHWEST ALONG U.S. HIGHWAY 11 FROM THE COURTHOUSE AT
 JV3551'HAGERSTOWN, THENCE 0.25 MILE SOUTH ALONG GLENSIDE AVENUE, THENCE
 JV3551'0.9 MILE EAST ALONG WEST OAKRIDGE DRIVE, THENCE 0.1 MILE NORTHEAST
 JV3551'ALONG STATE HIGHWAY 632, THENCE 0.1 MILE EAST AND NORTH ALONG A
 JV3551'TRACK ROAD, 75.95 FEET EAST OF THE TRIANGULATION STATION, AND
 JV3551'24 FEET NORTHWEST OF A WIRE FENCE.  A STANDARD REFERENCE-MARK
 JV3551'DISK, STAMPED HUTZEL BCS NO 1 1955 AND SET IN THE TOP OF A
 JV3551'CONCRETE CYLINDER PROJECTING 2 INCHES ABOVE GROUND.
 JV3551
 JV3551                          STATION RECOVERY (2008)
 JV3551
 JV3551'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3551'MAY BE PRESENT BUT UNDER HEAVY GROUND COVER OF HONEYSUCKLE AND
 JV3551'BRAMBLES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3552 ***********************************************************************
 JV3552  DESIGNATION -  HUTZEL RM 2
 JV3552  PID         -  JV3552
 JV3552  STATE/COUNTY-  MD/WASHINGTON
 JV3552  COUNTRY     -  US
 JV3552  USGS QUAD   -  FUNKSTOWN (2017)
 JV3552
 JV3552                         *CURRENT SURVEY CONTROL
 JV3552  ______________________________________________________________________
 JV3552* NAD 83(1986) POSITION- 39 36 54.13   (N) 077 44 20.47   (W)   HD_HELD1
 JV3552* NAVD 88 ORTHO HEIGHT -   183.593 (meters)      602.34  (feet) ADJUSTED
 JV3552  ______________________________________________________________________
 JV3552  GEOID HEIGHT    -        -34.141 (meters)                     GEOID18
 JV3552  DYNAMIC HEIGHT  -        183.484 (meters)      601.98  (feet) COMP
 JV3552  MODELED GRAVITY -    980,032.9   (mgal)                       NAVD 88
 JV3552
 JV3552  VERT ORDER      -  SECOND    CLASS 0
 JV3552
 JV3552.The horizontal coordinates were determined by differentially corrected
 JV3552.hand held GPS observations or other comparable positioning techniques
 JV3552.and have an estimated accuracy of +/- 3 meters.
 JV3552
 JV3552.The orthometric height was determined by differential leveling and
 JV3552.adjusted by the NATIONAL GEODETIC SURVEY
 JV3552.in June 1991.
 JV3552
 JV3552.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3552.GEOID18 height accuracy estimate available here.
 JV3552
 JV3552.Click photographs - Photos may exist for this station.
 JV3552
 JV3552.The dynamic height is computed by dividing the NAVD 88
 JV3552.geopotential number by the normal gravity value computed on the
 JV3552.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3552.degrees latitude (g = 980.6199 gals.).
 JV3552
 JV3552.The modeled gravity was interpolated from observed gravity values.
 JV3552
 JV3552;                    North         East    Units  Estimated Accuracy
 JV3552;SPC MD       -   216,544.1     336,537.9     MT  (+/- 3 meters HH1 GPS) 
 JV3552
 JV3552_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ6487388616(NAD 83)
 JV3552
 JV3552                          SUPERSEDED SURVEY CONTROL
 JV3552
 JV3552  NGVD 29 (11/26/84)  183.800  (m)          603.02   (f) ADJUSTED    2 0
 JV3552
 JV3552.Superseded values are not recommended for survey control.
 JV3552
 JV3552.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3552.See file dsdata.pdf to determine how the superseded data were derived.
 JV3552
 JV3552_MARKER: DR = REFERENCE MARK DISK
 JV3552_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV3552_STAMPING: HUTZEL BCS NO 2 1955
 JV3552_MARK LOGO: CGS
 JV3552_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV3552+STABILITY: SURFACE MOTION
 JV3552
 JV3552  HISTORY     - Date     Condition        Report By
 JV3552  HISTORY     - 1955     MONUMENTED       MDBCSM
 JV3552  HISTORY     - 1958     GOOD             CGS
 JV3552  HISTORY     - 20080315 MARK NOT FOUND   GEOCAC
 JV3552
 JV3552                          STATION DESCRIPTION
 JV3552
 JV3552'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV3552'3 MI S FROM HAGERSTOWN.
 JV3552'2.1 MILES SOUTHWEST ALONG U.S. HIGHWAY 11 FROM THE COURTHOUSE AT
 JV3552'HAGERSTOWN, THENCE 0.25 MILE SOUTH ALONG GLENSIDE AVENUE, THENCE
 JV3552'0.9 MILE EAST ALONG WEST OAKRIDGE DRIVE, THENCE 0.1 MILE NORTHEAST
 JV3552'ALONG STATE HIGHWAY 632, THENCE 0.1 MILE EAST AND NORTH ALONG A
 JV3552'TRACK ROAD, 72.60 FEET SOUTH-SOUTHWEST OF THE TRIANGULATION
 JV3552'STATION, AND 96 FEET NORTHWEST OF THE WIRE FENCE.  A STANDARD
 JV3552'REFERENCE-MARK DISK, STAMPED HUTZEL BCS NO 2 1955 AND SET IN THE
 JV3552'TOP OF A CONCRETE CYLINDER PROJECTING 2 INCHES ABOVE GROUND.
 JV3552
 JV3552                          STATION RECOVERY (2008)
 JV3552
 JV3552'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3552'MAY BE PRESENT BUT UNDER HEAVY GROUND COVER OF HONEYSUCKLE AND
 JV3552'BRAMBLES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4727 ***********************************************************************
 JV4727  DESIGNATION -  HUYETT
 JV4727  PID         -  JV4727
 JV4727  STATE/COUNTY-  MD/WASHINGTON
 JV4727  COUNTRY     -  US
 JV4727  USGS QUAD   -  MASON AND DIXON (2019)
 JV4727
 JV4727                         *CURRENT SURVEY CONTROL
 JV4727  ______________________________________________________________________
 JV4727* NAD 83(1991) POSITION- 39 39 07.38340(N) 077 48 25.83892(W)   ADJUSTED
 JV4727* NAVD 88 ORTHO HEIGHT -   171.    (meters)      561.    (feet) SCALED
 JV4727  ______________________________________________________________________
 JV4727  GEOID HEIGHT    -        -34.291 (meters)                     GEOID18
 JV4727  LAPLACE CORR    -          1.66  (seconds)                    DEFLEC18
 JV4727  HORZ ORDER      -  SECOND
 JV4727
 JV4727.The horizontal coordinates were established by classical geodetic methods
 JV4727.and adjusted by the National Geodetic Survey in January 1992.
 JV4727
 JV4727.The orthometric height was scaled from a topographic map.
 JV4727
 JV4727.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4727.GEOID18 height accuracy estimate available here.
 JV4727
 JV4727.Click photographs - Photos may exist for this station.
 JV4727
 JV4727.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4727
 JV4727. The following values were computed from the NAD 83(1991) position.
 JV4727
 JV4727;                    North         East     Units Scale Factor Converg.
 JV4727;SPC MD       -   220,703.297   330,721.447   MT  1.00004160   -0 30 23.8
 JV4727;SPC MD       -   724,090.73  1,085,041.95   sFT  1.00004160   -0 30 23.8
 JV4727;SPC PA S     -    35,390.695   595,092.429   MT  1.00005588   -0 02 13.5
 JV4727;SPC PA S     -   116,110.97  1,952,399.08   sFT  1.00005588   -0 02 13.5
 JV4727;SPC WV N     -   129,266.294   745,270.491   MT  0.99994084   +1 04 46.7
 JV4727;SPC WV N     -   424,101.17  2,445,108.27   sFT  0.99994084   +1 04 46.7
 JV4727;UTM  18      - 4,392,906.126   259,150.309   MT  1.00031424   -1 47 31.9
 JV4727
 JV4727!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4727!SPC MD       -   0.99997858  x   1.00004160  =   1.00002018
 JV4727!SPC PA S     -   0.99997858  x   1.00005588  =   1.00003446
 JV4727!SPC WV N     -   0.99997858  x   0.99994084  =   0.99991943
 JV4727!UTM  18      -   0.99997858  x   1.00031424  =   1.00029282
 JV4727
 JV4727:                Primary Azimuth Mark                     Grid Az
 JV4727:SPC MD       -  HUYETT AZ MK                             097 17 55.8
 JV4727:SPC PA S     -  HUYETT AZ MK                             096 49 45.5
 JV4727:SPC WV N     -  HUYETT AZ MK                             095 42 45.3
 JV4727:UTM  18      -  HUYETT AZ MK                             098 35 03.9
 JV4727
 JV4727_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ5915092906(NAD 83)
 JV4727
 JV4727|---------------------------------------------------------------------|
 JV4727| PID    Reference Object                     Distance      Geod. Az  |
 JV4727|                                                           dddmmss.s |
 JV4727| CK7530 HUYETT AZ MK                                       0964732.0 |
 JV4727| JV4738 WILLIAMSPORT BYRON LEATHER STK      APPROX. 5.4 KM 1970621.2 |
 JV4727| CK7532 HUYETT RM 2                          21.985 METERS 30440     |
 JV4727| CK7531 HUYETT RM 1                          15.155 METERS 35837     |
 JV4727|---------------------------------------------------------------------|
 JV4727
 JV4727                          SUPERSEDED SURVEY CONTROL
 JV4727
 JV4727  NAD 83(1986)-  39 39 07.38263(N)    077 48 25.84827(W) AD(       ) 2
 JV4727  NAD 27      -  39 39 07.03800(N)    077 48 26.86800(W) AD(       ) 2
 JV4727
 JV4727.Superseded values are not recommended for survey control.
 JV4727
 JV4727.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4727.See file dsdata.pdf to determine how the superseded data were derived.
 JV4727
 JV4727_MARKER: DS = TRIANGULATION STATION DISK
 JV4727_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4727_STAMPING: HUYETT 1955
 JV4727_MARK LOGO: CGS
 JV4727_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4727+STABILITY: SURFACE MOTION
 JV4727
 JV4727  HISTORY     - Date     Condition        Report By
 JV4727  HISTORY     - 1955     MONUMENTED       CGS
 JV4727  HISTORY     - 1967     GOOD             CGS
 JV4727  HISTORY     - 1974     GOOD             NGS
 JV4727
 JV4727                          STATION DESCRIPTION
 JV4727
 JV4727'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WFD)
 JV4727'THE STATION IS ABOUT 5 MILES WEST OF THE CITY OF HAGERSTOWN AND
 JV4727'ADJACENT TO A CINDER DUMP OWNED BY THE STATE HIGHWAY DEPARTMENT.  IT
 JV4727'IS 51.8 FEET SOUTH OF A POWERLINE POLE NUMBERED H 22888, 51 FEET
 JV4727'NORTH OF THE CENTER OF U.S. HIGHWAY 40 AND 2 FEET NORTHEAST OF A
 JV4727'4 IN X 4 IN WHITE WITNESS POST.
 JV4727'
 JV4727'TO REACH THE STATION FROM THE POST OFFICE IN HAGERSTOWN, GO WEST
 JV4727'ON U.S. HIGHWAY 40 FOR 4.3 MILES TO A STOP LIGHT AT THE JUNCTION
 JV4727'OF HIGHWAY 40 AND STATE HIGHWAY 398, CONTINUE WEST ON HIGHWAY
 JV4727'40 FOR 0.05 MILE TO THE AZIMUTH MARK ON THE LEFT, CONTINUE WEST
 JV4727'FOR 0.35 MILE TO THE STATION ON THE RIGHT.
 JV4727'
 JV4727'THE STATION MARK IS FLUSH WITH THE GROUND, AND THE DISK IS
 JV4727'STAMPED HUYETT 1955.
 JV4727'
 JV4727'REFERENCE MARK 1 IS 8 FEET WEST OF THE POWERLINE POLE AND 3 FEET
 JV4727'SOUTH OF A FENCE.  THE MARK PROJECTS 6 INCHES, AND THE DISK IS
 JV4727'STAMPED HUYETT NO 1 1955.
 JV4727'
 JV4727'REFERENCE MARK 2 IS 64.4 FEET WEST OF THE POWERLINE POLE.  THE
 JV4727'MARK PROJECTS 6 INCHES, AND THE DISK IS STAMPED HUYETT NO 2 1955.
 JV4727'
 JV4727'THE AZIMUTH MARK IS ABOUT 60 FEET NORTHEAST OF THE CUNNINGHAM
 JV4727'RESIDENCE, 27 FEET SOUTH OF THE CENTER OF HIGHWAY 40, 16 FEET EAST
 JV4727'OF A FENCE CORNER, 4 FEET SOUTH OF A POWERLINE POLE AND 3 FEET WEST
 JV4727'OF A 4 IN X 4 IN WHITE WITNESS POST.  THE MARK PROJECTS 5 INCHES,
 JV4727'AND THE DISK IS STAMPED HUYETT 1955.
 JV4727'
 JV4727'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4727
 JV4727                          STATION RECOVERY (1967)
 JV4727
 JV4727'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JCB)
 JV4727'THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND
 JV4727'TO BE IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION IS ADEQUATE
 JV4727'EXCEPT AREA IS NOW USED BY TRANS SUPPLY INC. AS A REFUELING STOP
 JV4727'FOR TRUCKS AND REFERENCE MARK NO. 2 IS 3 FEET NORTHWEST OF THE
 JV4727'NORTHEAST CORNER OF SMALL FRAME BUILDING AND ABOUT 6 INCHES BELOW
 JV4727'THE SURFACE.  STATION MARK IS NOW ABOUT 4 INCHES BELOW THE
 JV4727'SURFACE.
 JV4727'
 JV4727'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4727'5.0 MILES WEST OF HAGERSTOWN.
 JV4727
 JV4727                          STATION RECOVERY (1974)
 JV4727
 JV4727'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN)
 JV4727'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JV4727'CONDITION AS DESCRIBED IN THE 1955 DESCRIPTION.  A NEW WITNESS
 JV4727'POST WAS ESTABLISHED TO TAKE THE PLACE OF THE OLD 2 BY 2 WOODEN
 JV4727'WITNESS POST WHICH WAS ORIGINALLY ESTABLISHED.  THE NEW WITNESS
 JV4727'POST WAS SET NEAR THE SAME LOCATION AS THE ORIGINAL WITNESS POST.
 JV4727'
 JV4727'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4727'5 MILES WEST OF HAGERSTOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2265 ***********************************************************************
 JV2265  DESIGNATION -  HYATT
 JV2265  PID         -  JV2265
 JV2265  STATE/COUNTY-  MD/FREDERICK
 JV2265  COUNTRY     -  US
 JV2265  USGS QUAD   -  URBANA (2016)
 JV2265
 JV2265                         *CURRENT SURVEY CONTROL
 JV2265  ______________________________________________________________________
 JV2265* NAD 83(1993) POSITION- 39 17 07.97892(N) 077 19 42.70574(W)   ADJUSTED
 JV2265* NAVD 88 ORTHO HEIGHT -   147.133 (meters)      482.72  (feet) ADJUSTED
 JV2265  ______________________________________________________________________
 JV2265  GEOID HEIGHT    -        -32.162 (meters)                     GEOID18
 JV2265  LAPLACE CORR    -          6.18  (seconds)                    DEFLEC18
 JV2265  DYNAMIC HEIGHT  -        147.056 (meters)      482.47  (feet) COMP
 JV2265  MODELED GRAVITY -    980,094.5   (mgal)                       NAVD 88
 JV2265
 JV2265  HORZ ORDER      -  SECOND
 JV2265  VERT ORDER      -  SECOND    CLASS 0
 JV2265
 JV2265.The horizontal coordinates were established by classical geodetic methods
 JV2265.and adjusted by the National Geodetic Survey in November 1994.
 JV2265
 JV2265.The orthometric height was determined by differential leveling and
 JV2265.adjusted by the NATIONAL GEODETIC SURVEY
 JV2265.in June 1991.
 JV2265
 JV2265.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2265.GEOID18 height accuracy estimate available here.
 JV2265
 JV2265.Click photographs - Photos may exist for this station.
 JV2265
 JV2265.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2265
 JV2265.The dynamic height is computed by dividing the NAVD 88
 JV2265.geopotential number by the normal gravity value computed on the
 JV2265.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2265.degrees latitude (g = 980.6199 gals.).
 JV2265
 JV2265.The modeled gravity was interpolated from observed gravity values.
 JV2265
 JV2265. The following values were computed from the NAD 83(1993) position.
 JV2265
 JV2265;                    North         East     Units Scale Factor Converg.
 JV2265;SPC MD       -   179,757.212   371,656.186   MT  0.99997537   -0 12 22.3
 JV2265;SPC MD       -   589,753.45  1,219,342.00   sFT  0.99997537   -0 12 22.3
 JV2265;UTM  18      - 4,351,049.879   299,170.436   MT  1.00009662   -1 28 29.6
 JV2265
 JV2265!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2265!SPC MD       -   0.99998196  x   0.99997537  =   0.99995733
 JV2265!UTM  18      -   0.99998196  x   1.00009662  =   1.00007858
 JV2265
 JV2265:                Primary Azimuth Mark                     Grid Az
 JV2265:SPC MD       -  URBA                                     148 31 11.6
 JV2265:UTM  18      -  URBA                                     149 47 18.9
 JV2265
 JV2265_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9917051049(NAD 83)
 JV2265
 JV2265|---------------------------------------------------------------------|
 JV2265| PID    Reference Object                     Distance      Geod. Az  |
 JV2265|                                                           dddmmss.s |
 JV2265| JV2266 HYATT RM 2                            9.480 METERS 12745     |
 JV2265| JV2271 URBA                                APPROX. 5.0 KM 1481849.3 |
 JV2265| JV2264 HYATT RM 1                            9.922 METERS 34705     |
 JV2265|---------------------------------------------------------------------|
 JV2265
 JV2265                          SUPERSEDED SURVEY CONTROL
 JV2265
 JV2265  NAD 83(1991)-  39 17 07.97971(N)    077 19 42.70513(W) AD(       ) 2
 JV2265  NAD 83(1986)-  39 17 07.97998(N)    077 19 42.71634(W) AD(       ) 2
 JV2265  NAD 27      -  39 17 07.60214(N)    077 19 43.76298(W) AD(       ) 2
 JV2265  NGVD 29             147.33   (m)          483.4    (f) LEVELING    3  
 JV2265  NGVD 29 (11/26/84)  147.334  (m)          483.38   (f) ADJUSTED    2 0
 JV2265
 JV2265.Superseded values are not recommended for survey control.
 JV2265
 JV2265.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2265.See file dsdata.pdf to determine how the superseded data were derived.
 JV2265
 JV2265_MARKER: DS = TRIANGULATION STATION DISK
 JV2265_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2265_STAMPING: HYATT 1958
 JV2265_MARK LOGO: CGS
 JV2265_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2265+STABILITY: SURFACE MOTION
 JV2265
 JV2265  HISTORY     - Date     Condition        Report By
 JV2265  HISTORY     - 1958     MONUMENTED       CGS
 JV2265  HISTORY     - 1958     GOOD             CGS
 JV2265  HISTORY     - 1976     GOOD             LOCENG
 JV2265
 JV2265                          STATION DESCRIPTION
 JV2265
 JV2265'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2265'THE STATION IS LOCATED ON TOP OF HIGH CUTBANK ON WEST SIDE OF
 JV2265'U.S. HIGHWAY 240, ABOUT 10 MILES SOUTHEAST OF THE CENTER OF
 JV2265'FREDERICK, 2.2 MILES SOUTHEAST OF URBANA, ABOUT 0.7 MILE
 JV2265'NORTHWEST OF HYATTSTOWN AND 0.35 MILE NORTHWEST OF THE
 JV2265'MONTGOMERY-FREDERICK COUNTY LINE.  THE MARK IS 6 FEET
 JV2265'EAST-SOUTHEAST OF WITNESS POST AND 5-1/2 FEET EAST OF FENCE LINE.
 JV2265'THE MARK IS SET FLUSH AND THE DISK IS STAMPED HYATT 1958.
 JV2265'
 JV2265'R.M. NO. 1 IS 15 FEET EAST OF FENCE LINE.  THE MARK IS SET FLUSH
 JV2265'AND THE DISK IS STAMPED HYATT NO 1 1958.
 JV2265'
 JV2265'R.M. NO. 2 IS 14 FEET EAST OF FENCE LINE.  THE MARK IS SET FLUSH
 JV2265'AND THE DISK IS STAMPED HYATT NO 2 1958.
 JV2265'
 JV2265'NO AZIMUTH MARK WAS ESTABLISHED.
 JV2265'
 JV2265'STATIONS PERRY AND URBA ARE BOTH VISIBLE FROM GROUND AND EITHER
 JV2265'COULD BE USED AS AZIMUTH.
 JV2265'
 JV2265'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 240 AND
 JV2265'STATE HIGHWAY 121, ABOUT 0.5 MILE SOUTHWEST OF CLARKSBURG, GO
 JV2265'NORTHWEST OF U.S. HIGHWAY 240 FOR 3.7 MILES TO WHERE U.S. HIGHWAY
 JV2265'240 PASSES OVER COMUS-HYATTSTOWN ROAD.  CONTINUE NORTHWEST ON
 JV2265'U.S. HIGHWAY 240 FOR 0.2 MILE TO THE MONTGOMERY-FREDERICK COUNTY
 JV2265'LINE, CONTINUE NORTHWEST FOR 0.35 MILE TO MEDIAN STRIP BETWEEN
 JV2265'TRAFFIC LANES AND THE STATION ON TOP OF HIGH CUT-BANK ON LEFT
 JV2265'AS DESCRIBED.
 JV2265
 JV2265                          STATION RECOVERY (1958)
 JV2265
 JV2265'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2265'1.1 MI NW FROM HYATTSTOWN.
 JV2265'ABOUT 0.5 MILE WEST ALONG THE HYATTSTOWN-COMUS ROAD FROM THE
 JV2265'POST OFFICE AT HYATTSTOWN, THENCE 0.6 MILE NORTHWEST ALONG U.S.
 JV2265'HIGHWAY 240, ABOUT 0.4 MILE NORTHWEST OF THE FREDERICK-MONTGOMERY
 JV2265'COUNTY LINE, ON THE TOP OF A HIGH CUT BANK, ABOUT 100 FEET
 JV2265'SOUTHWEST OF THE CENTER LINE OF THE SOUTH BOUND LANE, 4 1/2
 JV2265'FEET EAST OF A FENCE LINE, 5 1/2 FEET NORTH OF A WHITE WOODEN
 JV2265'WITNESS POST, ABOUT 35 FEET ABOVE THE LEVEL OF THE HIGHWAY
 JV2265'AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV2265
 JV2265                          STATION RECOVERY (1976)
 JV2265
 JV2265'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1976 (JTL)
 JV2265'U.S.C.G.S. HYATT - 1958 - TRIANGULATION STA. RECOVERED GOOD,
 JV2265'UNDISTURBED.
 JV2265'
 JV2265'DISTANCE AND DIRECTION FROM NEAREST TOWN--17 MILES NORTHWEST OF
 JV2265'HYATTSTOWN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2264 ***********************************************************************
 JV2264  DESIGNATION -  HYATT RM 1
 JV2264  PID         -  JV2264
 JV2264  STATE/COUNTY-  MD/FREDERICK
 JV2264  COUNTRY     -  US
 JV2264  USGS QUAD   -  URBANA (2016)
 JV2264
 JV2264                         *CURRENT SURVEY CONTROL
 JV2264  ______________________________________________________________________
 JV2264* NAD 83(1986) POSITION- 39 17 08.29   (N) 077 19 42.80   (W)   HD_HELD1
 JV2264* NAVD 88 ORTHO HEIGHT -   146.659 (meters)      481.16  (feet) ADJUSTED
 JV2264  ______________________________________________________________________
 JV2264  GEOID HEIGHT    -        -32.162 (meters)                     GEOID18
 JV2264  DYNAMIC HEIGHT  -        146.581 (meters)      480.91  (feet) COMP
 JV2264  MODELED GRAVITY -    980,094.5   (mgal)                       NAVD 88
 JV2264
 JV2264  VERT ORDER      -  SECOND    CLASS 0
 JV2264
 JV2264.The horizontal coordinates were determined by differentially corrected
 JV2264.hand held GPS observations or other comparable positioning techniques
 JV2264.and have an estimated accuracy of +/- 3 meters.
 JV2264
 JV2264.The orthometric height was determined by differential leveling and
 JV2264.adjusted by the NATIONAL GEODETIC SURVEY
 JV2264.in June 1991.
 JV2264
 JV2264.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2264.GEOID18 height accuracy estimate available here.
 JV2264
 JV2264.Click photographs - Photos may exist for this station.
 JV2264
 JV2264.The dynamic height is computed by dividing the NAVD 88
 JV2264.geopotential number by the normal gravity value computed on the
 JV2264.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2264.degrees latitude (g = 980.6199 gals.).
 JV2264
 JV2264.The modeled gravity was interpolated from observed gravity values.
 JV2264
 JV2264;                    North         East    Units  Estimated Accuracy
 JV2264;SPC MD       -   179,766.8     371,654.0     MT  (+/- 3 meters HH1 GPS) 
 JV2264
 JV2264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9916851059(NAD 83)
 JV2264
 JV2264                          SUPERSEDED SURVEY CONTROL
 JV2264
 JV2264  NGVD 29 (11/26/84)  146.859  (m)          481.82   (f) ADJUSTED    2 0
 JV2264
 JV2264.Superseded values are not recommended for survey control.
 JV2264
 JV2264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2264.See file dsdata.pdf to determine how the superseded data were derived.
 JV2264
 JV2264_MARKER: DR = REFERENCE MARK DISK
 JV2264_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2264_STAMPING: HYATT NO 1 1958
 JV2264_MARK LOGO: CGS
 JV2264_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2264+STABILITY: SURFACE MOTION
 JV2264
 JV2264  HISTORY     - Date     Condition        Report By
 JV2264  HISTORY     - 1958     MONUMENTED       CGS
 JV2264
 JV2264                          STATION DESCRIPTION
 JV2264
 JV2264'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2264'1.1 MI NW FROM HYATTSTOWN.
 JV2264'ABOUT 0.5 MILE WEST ALONG THE HYATTSTOWN-COMUS ROAD FROM THE
 JV2264'POST OFFICE AT HYATTSTOWN, THENCE 0.6 MILE NORTHWEST ALONG U.S.
 JV2264'HIGHWAY 240, ON THE TOP OF A HIGH CUT BANK, 0.4 MILE NORTHWEST
 JV2264'OF THE FREDERICK-MONTGOMERY COUNTY LINE, 32.7 FEET NORTH OF
 JV2264'THE STATION AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH
 JV2264'THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2266 ***********************************************************************
 JV2266  DESIGNATION -  HYATT RM 2
 JV2266  PID         -  JV2266
 JV2266  STATE/COUNTY-  MD/FREDERICK
 JV2266  COUNTRY     -  US
 JV2266  USGS QUAD   -  URBANA (2016)
 JV2266
 JV2266                         *CURRENT SURVEY CONTROL
 JV2266  ______________________________________________________________________
 JV2266* NAD 83(1986) POSITION- 39 17 07.79   (N) 077 19 42.39   (W)   HD_HELD1
 JV2266* NAVD 88 ORTHO HEIGHT -   147.292 (meters)      483.24  (feet) ADJUSTED
 JV2266  ______________________________________________________________________
 JV2266  GEOID HEIGHT    -        -32.162 (meters)                     GEOID18
 JV2266  DYNAMIC HEIGHT  -        147.214 (meters)      482.98  (feet) COMP
 JV2266  MODELED GRAVITY -    980,094.5   (mgal)                       NAVD 88
 JV2266
 JV2266  VERT ORDER      -  SECOND    CLASS 0
 JV2266
 JV2266.The horizontal coordinates were determined by differentially corrected
 JV2266.hand held GPS observations or other comparable positioning techniques
 JV2266.and have an estimated accuracy of +/- 3 meters.
 JV2266
 JV2266.The orthometric height was determined by differential leveling and
 JV2266.adjusted by the NATIONAL GEODETIC SURVEY
 JV2266.in June 1991.
 JV2266
 JV2266.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2266.GEOID18 height accuracy estimate available here.
 JV2266
 JV2266.Click photographs - Photos may exist for this station.
 JV2266
 JV2266.The dynamic height is computed by dividing the NAVD 88
 JV2266.geopotential number by the normal gravity value computed on the
 JV2266.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2266.degrees latitude (g = 980.6199 gals.).
 JV2266
 JV2266.The modeled gravity was interpolated from observed gravity values.
 JV2266
 JV2266;                    North         East    Units  Estimated Accuracy
 JV2266;SPC MD       -   179,751.4     371,663.7     MT  (+/- 3 meters HH1 GPS) 
 JV2266
 JV2266_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ9917751043(NAD 83)
 JV2266
 JV2266                          SUPERSEDED SURVEY CONTROL
 JV2266
 JV2266  NGVD 29 (11/26/84)  147.492  (m)          483.90   (f) ADJUSTED    2 0
 JV2266
 JV2266.Superseded values are not recommended for survey control.
 JV2266
 JV2266.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2266.See file dsdata.pdf to determine how the superseded data were derived.
 JV2266
 JV2266_MARKER: DR = REFERENCE MARK DISK
 JV2266_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2266_STAMPING: HYATT NO 2 1958
 JV2266_MARK LOGO: CGS
 JV2266_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2266+STABILITY: SURFACE MOTION
 JV2266
 JV2266  HISTORY     - Date     Condition        Report By
 JV2266  HISTORY     - 1958     MONUMENTED       CGS
 JV2266
 JV2266                          STATION DESCRIPTION
 JV2266
 JV2266'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2266'1.1 MI NW FROM HYATTSTOWN.
 JV2266'ABOUT 0.5 MILE WEST ALONG THE HYATTSTOWN-COMUS ROAD FROM THE
 JV2266'POST OFFICE AT HYATTSTOWN, THENCE 0.6 MILE NORTHWEST ALONG
 JV2266'U.S. HIGHWAY 240, ABOUT 0.4 MILE NORTHWEST OF THE
 JV2266'FREDERICK-MONTGOMERY COUNTY LINE, ON THE TOP OF A HIGH CUT
 JV2266'BANK, 31.2 FEET SOUTHEAST OF THE STATION AND SET IN THE TOP OF
 JV2266'A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1260 ***********************************************************************
 HV1260  DESIGNATION -  HYATTSVILLE
 HV1260  PID         -  HV1260
 HV1260  STATE/COUNTY-  MD/PRINCE GEORGES
 HV1260  COUNTRY     -  US
 HV1260  USGS QUAD   -  WASHINGTON EAST (2016)
 HV1260
 HV1260                         *CURRENT SURVEY CONTROL
 HV1260  ______________________________________________________________________
 HV1260* NAD 83(1986) POSITION- 38 57 09.     (N) 076 56 23.     (W)   SCALED
 HV1260* NAVD 88 ORTHO HEIGHT -    17.867 (meters)       58.62  (feet) ADJUSTED
 HV1260  ______________________________________________________________________
 HV1260  GEOID HEIGHT    -        -32.166 (meters)                     GEOID18
 HV1260  DYNAMIC HEIGHT  -         17.858 (meters)       58.59  (feet) COMP
 HV1260  MODELED GRAVITY -    980,103.5   (mgal)                       NAVD 88
 HV1260
 HV1260  VERT ORDER      -  FIRST     CLASS I
 HV1260
 HV1260.The horizontal coordinates were scaled from a map and have
 HV1260.an estimated accuracy of +/- 6 seconds.
 HV1260
 HV1260.The orthometric height was determined by differential leveling and
 HV1260.adjusted by the NATIONAL GEODETIC SURVEY
 HV1260.in June 1991.
 HV1260
 HV1260.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1260.GEOID18 height accuracy estimate available here.
 HV1260
 HV1260.Click photographs - Photos may exist for this station.
 HV1260
 HV1260.The dynamic height is computed by dividing the NAVD 88
 HV1260.geopotential number by the normal gravity value computed on the
 HV1260.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1260.degrees latitude (g = 980.6199 gals.).
 HV1260
 HV1260.The modeled gravity was interpolated from observed gravity values.
 HV1260
 HV1260;                    North         East    Units  Estimated Accuracy
 HV1260;SPC MD       -   142,740.      405,230.      MT  (+/- 180 meters Scaled)
 HV1260
 HV1260_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ319132(NAD 83)
 HV1260
 HV1260                          SUPERSEDED SURVEY CONTROL
 HV1260
 HV1260  NGVD 29 (11/26/84)   18.100  (m)           59.38   (f) ADJUSTED    1 1
 HV1260
 HV1260.Superseded values are not recommended for survey control.
 HV1260
 HV1260.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1260.See file dsdata.pdf to determine how the superseded data were derived.
 HV1260
 HV1260_MARKER: DB = BENCH MARK DISK
 HV1260_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV1260_SP_SET: OVERPASS BALUSTRADE
 HV1260_STAMPING: HYATTSVILLE 1933
 HV1260_MARK LOGO: CGS
 HV1260_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1260
 HV1260  HISTORY     - Date     Condition        Report By
 HV1260  HISTORY     - 1933     MONUMENTED       CGS
 HV1260  HISTORY     - 1971     GOOD             NGS
 HV1260
 HV1260                          STATION DESCRIPTION
 HV1260
 HV1260'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1260'AT HYATTSVILLE.
 HV1260'AT HYATTSVILLE, AT THE JUNCTION OF U.S. HIGHWAY 1 AND ALTERNATE
 HV1260'U.S. HIGHWAY 1, 28 FEET EAST OF THE CENTER LINE OF ALTERNATE
 HV1260'HIGHWAY 1 (BALTIMORE AVENUE), SET IN THE TOP OF THE WEST END
 HV1260'OF THE SOUTH BALUSTRADE ON THE ALTERNATE HIGHWAY 1 OVERPASS
 HV1260'FOR U.S. HIGHWAY 1, AND ABOUT 3 FEET ABOVE THE LEVEL OF THE
 HV1260'HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7853 ***********************************************************************
 HV7853  DESIGNATION -  HYATTSVILLE AGER RD METH CH
 HV7853  PID         -  HV7853
 HV7853  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7853  COUNTRY     -  US
 HV7853  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7853
 HV7853                         *CURRENT SURVEY CONTROL
 HV7853  ______________________________________________________________________
 HV7853* NAD 83(1993) POSITION- 38 58 01.94914(N) 076 58 28.45661(W)   ADJUSTED
 HV7853  ______________________________________________________________________
 HV7853  GEOID HEIGHT    -        -32.072 (meters)                     GEOID18
 HV7853  LAPLACE CORR    -         -3.47  (seconds)                    DEFLEC18
 HV7853  HORZ ORDER      -  THIRD
 HV7853
 HV7853.The horizontal coordinates were established by classical geodetic methods
 HV7853.and adjusted by the National Geodetic Survey in November 1994.
 HV7853
 HV7853.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7853.GEOID18 height accuracy estimate available here.
 HV7853
 HV7853.Click photographs - Photos may exist for this station.
 HV7853
 HV7853.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7853
 HV7853. The following values were computed from the NAD 83(1993) position.
 HV7853
 HV7853;                    North         East     Units Scale Factor Converg.
 HV7853;SPC MD       -   144,366.292   402,203.707   MT  0.99995112   +0 00 57.5
 HV7853;SPC MD       -   473,641.74  1,319,563.33   sFT  0.99995112   +0 00 57.5
 HV7853;UTM  18      - 4,314,991.806   328,932.360   MT  0.99996036   -1 14 31.4
 HV7853
 HV7853_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2893214991(NAD 83)
 HV7853
 HV7853                          SUPERSEDED SURVEY CONTROL
 HV7853
 HV7853  NAD 83(1991)-  38 58 01.94883(N)    076 58 28.45665(W) AD(       ) 3
 HV7853  NAD 83(1986)-  38 58 01.94791(N)    076 58 28.46753(W) AD(       ) 3
 HV7853  NAD 27      -  38 58 01.55326(N)    076 58 29.55555(W) AD(       ) 3
 HV7853
 HV7853.Superseded values are not recommended for survey control.
 HV7853
 HV7853.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7853.See file dsdata.pdf to determine how the superseded data were derived.
 HV7853
 HV7853_MARKER: 90 = CHURCH SPIRE
 HV7853
 HV7853  HISTORY     - Date     Condition        Report By
 HV7853  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7853  HISTORY     - 20040318 GOOD             GEOCAC
 HV7853
 HV7853                          STATION DESCRIPTION
 HV7853
 HV7853'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7853'THE STATION IS THE CENTER OF THE TOP OF THE HYATTSVILLE AGER ROAD
 HV7853'METHODIST CHURCH SPIRE, LOCATED AT THE JUNCTION OF AGER ROAD
 HV7853'AND 23RD STREET IN HYATTSVILLE.  IT IS ABOUT 98 FEET ABOVE
 HV7853'THE GROUND.
 HV7853
 HV7853                          STATION RECOVERY (2004)
 HV7853
 HV7853'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV7853'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7743 ***********************************************************************
 HV7743  DESIGNATION -  HYATTSVILLE FIRST BAP CH SPIRE
 HV7743  PID         -  HV7743
 HV7743  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7743  COUNTRY     -  US
 HV7743  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7743
 HV7743                         *CURRENT SURVEY CONTROL
 HV7743  ______________________________________________________________________
 HV7743* NAD 83(1993) POSITION- 38 57 24.50050(N) 076 56 46.00113(W)   ADJUSTED
 HV7743  ______________________________________________________________________
 HV7743  GEOID HEIGHT    -        -32.143 (meters)                     GEOID18
 HV7743  LAPLACE CORR    -         -4.72  (seconds)                    DEFLEC18
 HV7743  HORZ ORDER      -  THIRD
 HV7743
 HV7743.The horizontal coordinates were established by classical geodetic methods
 HV7743.and adjusted by the National Geodetic Survey in November 1994.
 HV7743
 HV7743.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7743.GEOID18 height accuracy estimate available here.
 HV7743
 HV7743.Click photographs - Photos may exist for this station.
 HV7743
 HV7743.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7743
 HV7743. The following values were computed from the NAD 83(1993) position.
 HV7743
 HV7743;                    North         East     Units Scale Factor Converg.
 HV7743;SPC MD       -   143,212.601   404,670.781   MT  0.99995084   +0 02 01.8
 HV7743;SPC MD       -   469,856.68  1,327,657.39   sFT  0.99995084   +0 02 01.8
 HV7743;UTM  18      - 4,313,784.230   331,373.524   MT  0.99995014   -1 13 26.0
 HV7743
 HV7743_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3137313784(NAD 83)
 HV7743
 HV7743                          SUPERSEDED SURVEY CONTROL
 HV7743
 HV7743  NAD 83(1991)-  38 57 24.50031(N)    076 56 46.00124(W) AD(       ) 3
 HV7743  NAD 83(1986)-  38 57 24.49935(N)    076 56 46.01243(W) AD(       ) 3
 HV7743  NAD 27      -  38 57 24.10112(N)    076 56 47.10271(W) AD(       ) 3
 HV7743
 HV7743.Superseded values are not recommended for survey control.
 HV7743
 HV7743.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7743.See file dsdata.pdf to determine how the superseded data were derived.
 HV7743
 HV7743_MARKER: 90 = CHURCH SPIRE
 HV7743
 HV7743  HISTORY     - Date     Condition        Report By
 HV7743  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7743  HISTORY     - 20041227 GOOD             GEOCAC
 HV7743
 HV7743                          STATION DESCRIPTION
 HV7743
 HV7743'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7743'THE STATION IS THE CENTER OF THE TOP OF THE HYATTSVILLE FIRST
 HV7743'BAPTIST CHURCH SPIRE, LOCATED AT THE INTERSECTION OF LONGFELLOW
 HV7743'AVENUE AND 42ND STREET IN HYATTSVILLE.  IT IS ABOUT 95 FEET ABOVE
 HV7743'THE SURFACE OF THE GROUND.
 HV7743
 HV7743                          STATION RECOVERY (2004)
 HV7743
 HV7743'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV7743'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7746 ***********************************************************************
 HV7746  DESIGNATION -  HYATTSVILLE FIRST METH CHURCH
 HV7746  PID         -  HV7746
 HV7746  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7746  COUNTRY     -  US
 HV7746  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7746
 HV7746                         *CURRENT SURVEY CONTROL
 HV7746  ______________________________________________________________________
 HV7746* NAD 83(1991) POSITION- 38 57 53.42303(N) 076 57 05.95890(W)   ADJUSTED
 HV7746  ______________________________________________________________________
 HV7746  GEOID HEIGHT    -        -32.119 (meters)                     GEOID18
 HV7746  LAPLACE CORR    -         -4.26  (seconds)                    DEFLEC18
 HV7746  HORZ ORDER      -  THIRD
 HV7746
 HV7746.The horizontal coordinates were established by classical geodetic methods
 HV7746.and adjusted by the National Geodetic Survey in January 1992.
 HV7746
 HV7746.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7746.GEOID18 height accuracy estimate available here.
 HV7746
 HV7746.Click photographs - Photos may exist for this station.
 HV7746
 HV7746.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7746
 HV7746. The following values were computed from the NAD 83(1991) position.
 HV7746
 HV7746;                    North         East     Units Scale Factor Converg.
 HV7746;SPC MD       -   144,104.184   404,189.798   MT  0.99995105   +0 01 49.2
 HV7746;SPC MD       -   472,781.81  1,326,079.36   sFT  0.99995105   +0 01 49.2
 HV7746;UTM  18      - 4,314,686.157   330,912.229   MT  0.99995206   -1 13 39.3
 HV7746
 HV7746_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3091214686(NAD 83)
 HV7746
 HV7746                          SUPERSEDED SURVEY CONTROL
 HV7746
 HV7746  NAD 83(1986)-  38 57 53.42214(N)    076 57 05.96990(W) AD(       ) 3
 HV7746  NAD 27      -  38 57 53.02426(N)    076 57 07.05949(W) AD(       ) 3
 HV7746
 HV7746.Superseded values are not recommended for survey control.
 HV7746
 HV7746.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7746.See file dsdata.pdf to determine how the superseded data were derived.
 HV7746
 HV7746_MARKER: 90 = CHURCH SPIRE
 HV7746
 HV7746  HISTORY     - Date     Condition        Report By
 HV7746  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7746  HISTORY     - 20031113 GOOD             GEOCAC
 HV7746
 HV7746                          STATION DESCRIPTION
 HV7746
 HV7746'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7746'THE STATION IS THE CENTER OF THE TOP OF THE HYATTSVILLE FIRST
 HV7746'METHODIST CHURCH SPIRE, LOCATED AT THE INTERSECTION OF QUEEN
 HV7746'CHAPEL ROAD AND QUEENSBURY ROAD IN HYATTSVILLE.  IT IS ABOUT 110
 HV7746'FEET ABOVE THE GROUND.
 HV7746
 HV7746                          STATION RECOVERY (2003)
 HV7746
 HV7746'RECOVERY NOTE BY GEOCACHING 2003 (APC)
 HV7746'FULL NAME OF CHURCH IS HYATTSVILLE FIRST UNITED METHODIST CHURCH
 HV7746'(ADDING 'UNITED' TO 1970 DESCRIPTION).
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7738 ***********************************************************************
 HV7738  DESIGNATION -  HYATTSVILLE RAD STA WRC MAST
 HV7738  PID         -  HV7738
 HV7738  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7738  COUNTRY     -  US
 HV7738  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7738
 HV7738                         *CURRENT SURVEY CONTROL
 HV7738  ______________________________________________________________________
 HV7738* NAD 83(1991) POSITION- 38 57 41.37540(N) 076 58 23.84795(W)   ADJUSTED
 HV7738  ______________________________________________________________________
 HV7738  GEOID HEIGHT    -        -32.079 (meters)                     GEOID18
 HV7738  LAPLACE CORR    -         -3.67  (seconds)                    DEFLEC18
 HV7738  HORZ ORDER      -  THIRD
 HV7738
 HV7738.The horizontal coordinates were established by classical geodetic methods
 HV7738.and adjusted by the National Geodetic Survey in January 1992.
 HV7738
 HV7738.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7738.GEOID18 height accuracy estimate available here.
 HV7738
 HV7738.Click photographs - Photos may exist for this station.
 HV7738
 HV7738.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7738
 HV7738. The following values were computed from the NAD 83(1991) position.
 HV7738
 HV7738;                    North         East     Units Scale Factor Converg.
 HV7738;SPC MD       -   143,731.913   402,314.836   MT  0.99995096   +0 01 00.3
 HV7738;SPC MD       -   471,560.45  1,319,927.92   sFT  0.99995096   +0 01 00.3
 HV7738;UTM  18      - 4,314,355.134   329,029.536   MT  0.99995995   -1 14 28.0
 HV7738
 HV7738_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2902914355(NAD 83)
 HV7738
 HV7738                          SUPERSEDED SURVEY CONTROL
 HV7738
 HV7738  NAD 83(1986)-  38 57 41.37464(N)    076 58 23.85897(W) AD(       ) 3
 HV7738  NAD 27      -  38 57 40.97507(N)    076 58 24.94657(W) AD(       ) 3
 HV7738
 HV7738.Superseded values are not recommended for survey control.
 HV7738
 HV7738.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7738.See file dsdata.pdf to determine how the superseded data were derived.
 HV7738
 HV7738_MARKER: 42 = RADIO/TV MAST
 HV7738
 HV7738  HISTORY     - Date     Condition        Report By
 HV7738  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7738
 HV7738                          STATION DESCRIPTION
 HV7738
 HV7738'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7738'THE STATION IS THE RED LIGHT MOUNTED AT THE TOP OF THE HYATTSVILLE
 HV7738'RADIO STATION WRC MAST.  IT IS THE TALLEST OF THREE AND HAS A LARGE
 HV7738'CIRCULAR ANTENNA AT THE TOP.  IT IS 410.5 FEET ABOVE THE GROUND
 HV7738'AND IS LOCATED AT 6000 AGER ROAD, IN HYATTSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7739 ***********************************************************************
 HV7739  DESIGNATION -  HYATTSVILLE ST MATTHEWS CH
 HV7739  PID         -  HV7739
 HV7739  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7739  COUNTRY     -  US
 HV7739  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7739
 HV7739                         *CURRENT SURVEY CONTROL
 HV7739  ______________________________________________________________________
 HV7739* NAD 83(1993) POSITION- 38 57 44.14057(N) 076 57 20.58441(W)   ADJUSTED
 HV7739  ______________________________________________________________________
 HV7739  GEOID HEIGHT    -        -32.113 (meters)                     GEOID18
 HV7739  LAPLACE CORR    -         -4.16  (seconds)                    DEFLEC18
 HV7739  HORZ ORDER      -  THIRD
 HV7739
 HV7739.The horizontal coordinates were established by classical geodetic methods
 HV7739.and adjusted by the National Geodetic Survey in November 1994.
 HV7739
 HV7739.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7739.GEOID18 height accuracy estimate available here.
 HV7739
 HV7739.Click photographs - Photos may exist for this station.
 HV7739
 HV7739.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7739
 HV7739. The following values were computed from the NAD 83(1993) position.
 HV7739
 HV7739;                    North         East     Units Scale Factor Converg.
 HV7739;SPC MD       -   143,817.772   403,837.848   MT  0.99995098   +0 01 40.1
 HV7739;SPC MD       -   471,842.14  1,324,924.67   sFT  0.99995098   +0 01 40.1
 HV7739;UTM  18      - 4,314,407.539   330,554.075   MT  0.99995356   -1 13 48.2
 HV7739
 HV7739_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3055414407(NAD 83)
 HV7739
 HV7739                          SUPERSEDED SURVEY CONTROL
 HV7739
 HV7739  NAD 83(1991)-  38 57 44.14046(N)    076 57 20.58440(W) AD(       ) 3
 HV7739  NAD 83(1986)-  38 57 44.13962(N)    076 57 20.59542(W) AD(       ) 3
 HV7739  NAD 27      -  38 57 43.74173(N)    076 57 21.68462(W) AD(       ) 3
 HV7739
 HV7739.Superseded values are not recommended for survey control.
 HV7739
 HV7739.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7739.See file dsdata.pdf to determine how the superseded data were derived.
 HV7739
 HV7739_MARKER: 90 = CHURCH SPIRE
 HV7739_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7739+SATELLITE: SATELLITE OBSERVATIONS - February 09, 2009
 HV7739
 HV7739  HISTORY     - Date     Condition        Report By
 HV7739  HISTORY     - 1970     FIRST OBSERVED   NGS
 HV7739  HISTORY     - 20090209 GOOD             GEOCAC
 HV7739
 HV7739                          STATION DESCRIPTION
 HV7739
 HV7739'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7739'THE STATION IS THE CENTER OF THE TOP OF THE HYATTSVILLE SAINT
 HV7739'MATTHEWS EPISCOPAL CHURCH SPIRE, LOCATED AT THE INTERSECTION OF
 HV7739'NICHOLSON STREET AND 37TH AVENUE IN HYATTSVILLE.  IT IS ABOUT 70
 HV7739'FEET ABOVE THE GROUND.
 HV7739
 HV7739                          STATION RECOVERY (2009)
 HV7739
 HV7739'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 HV7739'AT THE TOP OF THE HILL ON 36TH AVE. OFF OF NICHOLSON.  SPIRE IS ON THE
 HV7739'BUILDING BETWEEN 36TH AND 37TH AVES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7752 ***********************************************************************
 HV7752  DESIGNATION -  HYATTSVILLE UNIV CITY TANK
 HV7752  PID         -  HV7752
 HV7752  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7752  COUNTRY     -  US
 HV7752  USGS QUAD   -  WASHINGTON EAST (2016)
 HV7752
 HV7752                         *CURRENT SURVEY CONTROL
 HV7752  ______________________________________________________________________
 HV7752* NAD 83(1991) POSITION- 38 58 57.12909(N) 076 58 57.93712(W)   ADJUSTED
 HV7752  ______________________________________________________________________
 HV7752  GEOID HEIGHT    -        -32.048 (meters)                     GEOID18
 HV7752  LAPLACE CORR    -         -3.23  (seconds)                    DEFLEC18
 HV7752  HORZ ORDER      -  THIRD
 HV7752
 HV7752.The horizontal coordinates were established by classical geodetic methods
 HV7752.and adjusted by the National Geodetic Survey in January 1992.
 HV7752
 HV7752.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7752.GEOID18 height accuracy estimate available here.
 HV7752
 HV7752.Click photographs - Photos may exist for this station.
 HV7752
 HV7752.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7752
 HV7752. The following values were computed from the NAD 83(1991) position.
 HV7752
 HV7752;                    North         East     Units Scale Factor Converg.
 HV7752;SPC MD       -   146,067.655   401,493.707   MT  0.99995158   +0 00 39.0
 HV7752;SPC MD       -   479,223.63  1,317,233.94   sFT  0.99995158   +0 00 39.0
 HV7752;UTM  18      - 4,316,708.367   328,259.884   MT  0.99996319   -1 14 51.5
 HV7752
 HV7752_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2825916708(NAD 83)
 HV7752
 HV7752                          SUPERSEDED SURVEY CONTROL
 HV7752
 HV7752  NAD 83(1986)-  38 58 57.12844(N)    076 58 57.94808(W) AD(       ) 3
 HV7752  NAD 27      -  38 58 56.73154(N)    076 58 59.03400(W) AD(       ) 3
 HV7752
 HV7752.Superseded values are not recommended for survey control.
 HV7752
 HV7752.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7752.See file dsdata.pdf to determine how the superseded data were derived.
 HV7752
 HV7752_MARKER: 53 = ELEVATED TANK
 HV7752
 HV7752  HISTORY     - Date     Condition        Report By
 HV7752  HISTORY     - 1958     FIRST OBSERVED   CGS
 HV7752  HISTORY     - 1970     GOOD             NGS
 HV7752  HISTORY     - 20041227 GOOD             GEOCAC
 HV7752
 HV7752                          STATION DESCRIPTION
 HV7752
 HV7752'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7752'STATION IS A LARGE TANK ABOUT 70 FEET HIGH, SILVER COLORED,
 HV7752'WITH A ROUNDED TOP, SURROUNDED BY A SMALL DOME AT THE CENTER WITH
 HV7752'VENT OPENINGS IN ITS SIDES.  A RED LIGHT, SUPPORTED BY A SHORT
 HV7752'ROD PROJECTS FROM THE CENTER OF THE SMALL DOME.
 HV7752'
 HV7752'STATION IS LOCATED IN THE WEST SECTION OF HYATTSVILLE AND ON A
 HV7752'SMALL TREE COVERED HILL KNOWN AS HIGH POINT.  IT IS JUST ACROSS
 HV7752'THE PARKING RAMP OF THE CAROLE HINLANDS SCHOOL.  THE TANK PROJECTS
 HV7752'ABOUT 20 FEET ABOVE THE SURROUNDING TREES.
 HV7752
 HV7752                          STATION RECOVERY (1970)
 HV7752
 HV7752'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7752'TO REACH THE STATION FROM THE INTERCHANGE OF INTERSTATE HIGHWAY
 HV7752'495 AND STATE HIGHWAY 650, GO SOUTH ON STATE HIGHWAY 650 FOR
 HV7752'2.75 MILE TO ERSKIN STREET.  TURN LEFT AND GO EAST ON ERSKIN
 HV7752'STREET FOR 0.3 MILE TO ELSON STREET.  TURN LEFT AND GO NORTHEAST
 HV7752'ON ELSON STREET FOR 0.1 MILE TO 16TH STREET.  TURN LEFT AND GO
 HV7752'NORTHWEST ON 16TH STREET FOR 0.1 MILE TO HANNON STREET.  TURN
 HV7752'RIGHT AND GO NORTHEAST ON HANNON STREET FOR 0.05 MILE TO THE
 HV7752'STATION ON THE RIGHT.
 HV7752'
 HV7752'A TRAVERSE CONNECTION WAS MADE TO TRIANGULATION STATION CAROLE,
 HV7752'DISTANCE BEING 91.94 FEET (28.024 METERS) SOUTH-SOUTHWEST OF
 HV7752'STATION CAROLE.  THE STATION IS THE CENTER OF A 100 FOOT TALL
 HV7752'STANDPIPE PAINTED GREEN IN COLOR.
 HV7752'
 HV7752'THE STATION WAS POSITIONED BY INTERSECTION IN 1958.
 HV7752
 HV7752                          STATION RECOVERY (2004)
 HV7752
 HV7752'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 HV7752'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1221 ***********************************************************************
 JU1221  DESIGNATION -  HYDE
 JU1221  PID         -  JU1221
 JU1221  STATE/COUNTY-  MD/QUEEN ANNES
 JU1221  COUNTRY     -  US
 JU1221  USGS QUAD   -  CHURCH HILL (2017)
 JU1221
 JU1221                         *CURRENT SURVEY CONTROL
 JU1221  ______________________________________________________________________
 JU1221* NAD 83(1991) POSITION- 39 14 38.79271(N) 075 53 45.42452(W)   ADJUSTED
 JU1221* NAVD 88 ORTHO HEIGHT -     7.792 (meters)       25.56  (feet) ADJUSTED
 JU1221  ______________________________________________________________________
 JU1221  GEOID HEIGHT    -        -33.601 (meters)                     GEOID18
 JU1221  LAPLACE CORR    -         -2.52  (seconds)                    DEFLEC18
 JU1221  DYNAMIC HEIGHT  -          7.788 (meters)       25.55  (feet) COMP
 JU1221  MODELED GRAVITY -    980,109.2   (mgal)                       NAVD 88
 JU1221
 JU1221  HORZ ORDER      -  SECOND
 JU1221  VERT ORDER      -  SECOND    CLASS 0
 JU1221
 JU1221.The horizontal coordinates were established by classical geodetic methods
 JU1221.and adjusted by the National Geodetic Survey in January 1992.
 JU1221
 JU1221.The orthometric height was determined by differential leveling and
 JU1221.adjusted by the NATIONAL GEODETIC SURVEY
 JU1221.in June 1991.
 JU1221
 JU1221.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1221.GEOID18 height accuracy estimate available here.
 JU1221
 JU1221.Click photographs - Photos may exist for this station.
 JU1221
 JU1221.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU1221
 JU1221.The dynamic height is computed by dividing the NAVD 88
 JU1221.geopotential number by the normal gravity value computed on the
 JU1221.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1221.degrees latitude (g = 980.6199 gals.).
 JU1221
 JU1221.The modeled gravity was interpolated from observed gravity values.
 JU1221
 JU1221. The following values were computed from the NAD 83(1991) position.
 JU1221
 JU1221;                    North         East     Units Scale Factor Converg.
 JU1221;SPC MD       -   175,681.896   495,305.135   MT  0.99997046   +0 41 34.6
 JU1221;SPC MD       -   576,383.02  1,625,013.60   sFT  0.99997046   +0 41 34.6
 JU1221;UTM  18      - 4,344,248.640   422,684.659   MT  0.99967360   -0 34 00.6
 JU1221
 JU1221!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU1221!SPC MD       -   1.00000405  x   0.99997046  =   0.99997451
 JU1221!UTM  18      -   1.00000405  x   0.99967360  =   0.99967765
 JU1221
 JU1221:                Primary Azimuth Mark                     Grid Az
 JU1221:SPC MD       -  HYDE AZ                                  236 18 39.6
 JU1221:UTM  18      -  HYDE AZ                                  237 34 14.8
 JU1221
 JU1221_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2268444248(NAD 83)
 JU1221
 JU1221|---------------------------------------------------------------------|
 JU1221| PID    Reference Object                     Distance      Geod. Az  |
 JU1221|                                                           dddmmss.s |
 JU1221| JU1222 HYDE RM 1                            25.797 METERS 04356     |
 JU1221| JU1223 HYDE RM 2                            50.048 METERS 05718     |
 JU1221| JU1224 HYDE AZ                                            2370014.2 |
 JU1221|---------------------------------------------------------------------|
 JU1221
 JU1221                          SUPERSEDED SURVEY CONTROL
 JU1221
 JU1221  NAD 83(1986)-  39 14 38.78412(N)    075 53 45.43319(W) AD(       ) 2
 JU1221  NAD 27      -  39 14 38.39000(N)    075 53 46.65300(W) AD(       ) 2
 JU1221  NGVD 29               8.12   (m)           26.6    (f) LEVELING    3  
 JU1221  NGVD 29 (11/26/84)    8.032  (m)           26.35   (f) ADJUSTED    2 0
 JU1221
 JU1221.Superseded values are not recommended for survey control.
 JU1221
 JU1221.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1221.See file dsdata.pdf to determine how the superseded data were derived.
 JU1221
 JU1221_MARKER: DS = TRIANGULATION STATION DISK
 JU1221_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1221_STAMPING: HYDE 1934
 JU1221_MARK LOGO: CGS
 JU1221_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1221+STABILITY: SURFACE MOTION
 JU1221
 JU1221  HISTORY     - Date     Condition        Report By
 JU1221  HISTORY     - 1934     MONUMENTED       CGS
 JU1221  HISTORY     - 1942     GOOD             CGS
 JU1221  HISTORY     - 1943     GOOD             CGS
 JU1221  HISTORY     - 1964     SEE DESCRIPTION  CGS
 JU1221  HISTORY     - 1979     GOOD             NGS
 JU1221  HISTORY     - 1989     GOOD             USPSQD
 JU1221  HISTORY     - 20020306 MARK NOT FOUND   USPSQD
 JU1221
 JU1221                          STATION DESCRIPTION
 JU1221
 JU1221'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 JU1221'STATION IS ABOUT 8.5 MILES AIR LINE NE OF CHURCH HILL, MARYLAND,
 JU1221'9 MILES ENE OF CHESTERTOWN, MARYLAND, ON S SIDE OF CHESTER
 JU1221'RIVER.  ON A SANDY UNCULTIVATED RIDGE, AT N EDGE OF PINE WOODS,
 JU1221'0.2 MILE S OF RIVER, 0.15 MILE SE OF THE FARM BUILDINGS, 3.9
 JU1221'METERS N OF THE EDGE OF THE WOODS, 12.1 METERS W OF CENTER LINE OF
 JU1221'THE WOODS ROAD AT EDGE OF THE WOOD.  THE MARK PROJECTS 4
 JU1221'INCHES ABOVE GROUND.
 JU1221'
 JU1221'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE STANDARD
 JU1221'BRONZE DISKS SET IN CONCRETE.
 JU1221'
 JU1221'REFERENCE MARK NO.1 IS ENE OF STATION, PROJECTS 5 INCHES ABOVE
 JU1221'GROUND, 15 METERS E OF THE ROAD AT THE N EDGE OF THE WOODS, 1 METER
 JU1221'N OF THE EDGE OF THE WOODS.
 JU1221'
 JU1221'REFERENCE MARK NO.2 IS SW OF STATION, PROJECTS 4 INCHES ABOVE
 JU1221'GROUND, AT N CORNER OF THE PINE WOOD 3 METERS NNE OF AN 8-INCH PINE
 JU1221'TREE ON EXTREME N CORNER OF THE WOODS.
 JU1221'
 JU1221'AZIMUTH MARK IS WSW OF STATION, 2 PACES W OF CENTER LINE OF THE
 JU1221'LANE TO THE HOUSE, 6 INCHES E OF FENCE ON W SIDE OF LANE, 0.1 MILE
 JU1221'S OF POINT WHERE LANE TURNS E NEAR HOUSE.
 JU1221'
 JU1221'TO REACH STATION FROM CHURCH HILL, LEAVE INTERSECTION OF
 JU1221'HIGHWAY 213 AND STATE HIGHWAY 300, GO NE ON STATE HIGHWAY 300
 JU1221'5.0 MILES TO T-ROAD N, CALLED DUDLEYS CORNER, TURN N AND GO 3.7
 JU1221'MILES PASSING PONDTOWN TRADING POST ON RIGHT, TO A ROAD
 JU1221'INTERSECTION WITH CEMETERY IN NE CORNER, TURN RIGHT (EASTERLY) AT
 JU1221'THE CROSSROADS, ON TO A SHELL ROAD, GO 1.3 MILES TO ROAD LEFT AT
 JU1221'POWER POLE NO.50, AND 100 YARDS W OF 2-STORY FARMHOUSE, TURN LEFT
 JU1221'ON FARM ROAD AND GO 0.4 MILE TO STATION AT INTERSECTION OF ROAD
 JU1221'AND N EDGE OF THE WOODS.
 JU1221'
 JU1221'A 90-FOOT TOWER NECESSARY.
 JU1221
 JU1221                          STATION RECOVERY (1942)
 JU1221
 JU1221'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JU1221'3.8 MI SW FROM MILLINGTON.
 JU1221'IN QUEEN ANNE COUNTY, 3.8 MILES SOUTHWEST OF MILLINGTON, KENT
 JU1221'COUNTY.  THIS BENCH MARK MAY BE REACHED FROM THE POST OFFICE BY
 JU1221'GOING 1.7 MILES SOUTHWEST ALONG STATE HIGHWAY 313, THENCE 2.1
 JU1221'MILES WEST ALONG STATE HIGHWAY 544.  IT IS 2.7 MILES EAST OF
 JU1221'CRUMPTON, QUEEN ANNE COUNTY, AT THE NORTH EDGE OF A WOODS, 39.7
 JU1221'FEET WEST OF THE CENTERLINE OF THE ROAD, AND 13.1 FEET NORTH OF
 JU1221'THE EDGE OF THE WOODS.  A STANDARD TRIANGULATION STATION DISK,
 JU1221'STAMPED HYDE 1934 AND SET IN THE TOP OF A CONCRETE POST PROJECTING
 JU1221'4 INCHES ABOVE GROUND.  NOTE-- THIS BENCH MARK MAY BE REACHED FROM
 JU1221'CRUMPTON BY GOING 1.0 MILE SOUTHEAST ALONG STATE HIGHWAY 290,
 JU1221'THENCE 1.3 MILES EAST ALONG A DIRT ROAD TO THE JUNCTION OF A FARM
 JU1221'ROAD LEADING NORTH AT THE CHESACRES SIGN, AND THENCE 0.4 MILE
 JU1221'NORTH ALONG THE WOODS ROAD TO THE NORTH EDGE OF THE WOODS.
 JU1221
 JU1221                          STATION RECOVERY (1943)
 JU1221
 JU1221'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 JU1221'RECOVERED AS DESCRIBED EXCEPT FOR THE FOLLOWING DISCREPANCIES--
 JU1221'
 JU1221'STATION IS ON A SANDY CULTIVATED RIDGE, NOT AN UNCULTIVATED
 JU1221'RIDGE.
 JU1221'
 JU1221'AZIMUTH MARK IS 5.2 METERS W OF LANE, NOT 2 PACES.
 JU1221
 JU1221                          STATION RECOVERY (1964)
 JU1221
 JU1221'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (CFO)
 JU1221'THE STATION SURFACE MARK WAS FOUND DESTROYED, THE SUB-SURFACE MARK
 JU1221'RECOVERED IN GOOD CONDITION, STATION LOCATION IS NOW A CULTIVATED
 JU1221'FIELD.  A NEW SURFACE MARK WAS ESTABLISHED, A STATION DISK SET IN
 JU1221'CONCRETE AND 14 INCHES BELOW SURFACE OF THE GROUND, STAMPED
 JU1221'HYDE 1934 1964.  IT IS 37.5 FEET WEST OF CENTER OF THE PRIVATE
 JU1221'ROAD AND 18.5 FEET NORTH OF A METAL WITNESS POST AND SIGN.
 JU1221'
 JU1221'THE REFERENCE MARKS WERE RECOVERED AS PREVIOUSLY DESCRIBED AND
 JU1221'FOUND TO BE IN GOOD CONDITION, AND THE MEASURED DISTANCE TO THE
 JU1221'STATION CHECKED.
 JU1221'
 JU1221'THE AZIMUTH MARK WAS RECOVERED AND FOUND TO BE IN GOOD CONDITION,
 JU1221'IT IS 17.0 FEET WEST OF CENTERLINE OF THE ROAD, 2.0 FEET NORTH
 JU1221'OF POWER LINE POLE NO.10 AND 1 FOOT EAST OF OLD WOODEN FENCE AND
 JU1221'PROJECTS 3 INCHES.
 JU1221'
 JU1221'TO REACH THE STATION FROM THE SMALL VILLAGE OF CRUMPTON, GO SOUTH
 JU1221'ON STATE HIGHWAY 290 FOR 1.0 MILE TO JUNCTION OF HIGHWAY 544, TURN
 JU1221'LEFT, GO EAST ON HIGHWAY 544 FOR 1.1 MILES TO A PRIVATE ROAD
 JU1221'LEFT,* TURN LEFT AND GO NORTH ON THE PINE FOREST FARM ROAD FOR 0.3
 JU1221'MILE TO THE AZIMUTH MARK, CONTINUE EASTERLY ON THE HIGHWAY FOR
 JU1221'0.25 MILE TO A PRIVATE ROAD, TURN LEFT, GO NORTHERLY ON THE
 JU1221'PRIVATE ROAD THROUGH THE WOODS FOR 0.4 MILE TO THE NORTH EDGE OF
 JU1221'THE WOODS AND EDGE OF A FIELD AND STATION.
 JU1221
 JU1221                          STATION RECOVERY (1979)
 JU1221
 JU1221'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (RGP)
 JU1221'THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD
 JU1221'CONDITION.  A DIFFERENCE OF ABOUT 180 DEGREES WAS NOTED TO REFERENCE
 JU1221'MARK TWO.
 JU1221'
 JU1221'A COMPLETE NEW DESCRIPTION FOLLOWS.
 JU1221'
 JU1221'THE STATION IS LOCATED ABOUT 9 AIRLINE MILES EAST-NORTHEAST OF
 JU1221'CHESTERTOWN, 8-1/2 MILES NORTHEAST OF CHURCH HILL AND 1-1/2 MILES
 JU1221'EAST OF CRUMPTON.  IT IS ON PROPERTY OWNED BY MR. RICHARD BOLLING.
 JU1221'
 JU1221'TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 301 AND
 JU1221'STATE HIGHWAY 544 JUST SOUTHWEST OF UNICORN, GO WESTERLY ON STATE
 JU1221'HIGHWAY 544 FOR 0.8 MILE TO A SIDE ROAD RIGHT.  TURN RIGHT AND GO
 JU1221'NORTH ON FORDS LANDING ROAD FOR 0.05 MILE TO A FORK.  KEEP LEFT AND
 JU1221'CONTINUE NORTH ON FORDS LANDING ROAD FOR 0.45 MILE TO THE STATION ON
 JU1221'THE RIGHT, JUST NORTH OF A WOODED AREA.
 JU1221'
 JU1221'THE STATION IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NOS) DISK
 JU1221'STAMPED---HYDE 1934 1969---SET INTO THE TOP OF AN IRREGULAR MASS OF
 JU1221'CONCRETE RECESSED 30 CM (12 INCHES) BELOW THE GROUND LOCATED 35.97
 JU1221'METERS (118.0 FEET) N FROM AN UNDERGROUND TELEPHONE CABLE SPLICE BOX
 JU1221'NUMBER 14, 11.0 METERS (36 FEET) E FROM THE CENTER OF THE ROAD, 4.6
 JU1221'METERS (15 FEET) N FROM THE WOODS LINE, AND 0.9 METER (3 FEET) N FROM
 JU1221'A WITNESS POST.
 JU1221'
 JU1221'REFERENCE MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 JU1221'NOS) DISK STAMPED---HYDE 1934 NO 1---SET INTO THE TOP OF A SQUARE
 JU1221'CONCRETE MONUMENT 30 CM (12 INCHES) ON SIDE PROJECTING 8 CM (3
 JU1221'INCHES) ABOVE THE GROUND SET IN THE NORTH EDGE OF THE WOODED AREA AND
 JU1221'LOCATED 36.9 METERS (121 FEET) E FROM THE CENTER OF THE ROAD, 0.6
 JU1221'METER (2 FEET) N FROM A WITNESS POST, AND 0.6 METER (2 FEET) HIGHER
 JU1221'THAN THE STATION.
 JU1221'
 JU1221'REFERENCE MARK NO. 2 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 JU1221'NOS) DISK STAMPED---HYDE 1934 NO 2---SET INTO THE TOP OF A SQUARE
 JU1221'CONCRETE MONUMENT 30 CM (12 INCHES) ON SIDE PROJECTING 8 CM (3
 JU1221'INCHES) ABOVE THE GROUND SET IN NORTH EDGE OF THE WOODED AREA AND
 JU1221'LOCATED 39.0 METERS (128 FEET) W FROM THE CENTER OF THE ROAD, 0.9
 JU1221'METER (3 FEET) S FROM A WITNESS POST, AND 0.3 METER (1 FOOT) HIGHER
 JU1221'THAN THE STATION.
 JU1221'
 JU1221'AZIMUTH MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 JU1221'NOS) DISK STAMPED---HYDE 1934 AZ MARK---SET INTO THE TOP OF A
 JU1221'SQUARE CONCRETE MONUMENT 30 CM (12 INCHES) ON SIDE PROJECTING 10 CM
 JU1221'(4 INCHES) ABOVE THE GROUND LOCATED 5.94 METERS (19.5 FEET) W FROM
 JU1221'THE CENTER OF THE ROAD, 0.6 METER (2 FEET) S FROM A WITNESS POST, AND
 JU1221'0.6 METER (2 FEET) N FROM A POWERLINE POLE NUMBERED 10 38583 25163.
 JU1221'
 JU1221'TO REACH THE AZIMUTH MARK FROM THE STATION, GO BACK TO STATE HIGHWAY
 JU1221'544 AND TURN RIGHT, WEST ON HIGHWAY 544 FOR 0.45 MILE TO A SIDE ROAD
 JU1221'RIGHT.  TURN RIGHT AND GO NORTH ON A BLADED ROAD FOR 0.35 MILE TO THE
 JU1221'MARK ON THE LEFT.
 JU1221
 JU1221                          STATION RECOVERY (1989)
 JU1221
 JU1221'RECOVERY NOTE BY US POWER SQUADRON 1989 (GSW)
 JU1221'RECOVERED IN GOOD CONDITION.
 JU1221
 JU1221                          STATION RECOVERY (2002)
 JU1221
 JU1221'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU1221'EXTENSIVE PROBING FAILED TO RECOVER MARK, PROBABLY UNDER NEW GRAVEL
 JU1221'DRIVEWAY FOR A PRIVATE RESIDENCE IN THE WOODS.  THE WITNESS POST
 JU1221'APPEARS TO HAVE BEEN REPLACED AND MOVED AWAY FROM THE DRIVEWAY.  THE
 JU1221'REMAINS OF AN OLDER ALUMINUM WITNESS SIGN WERE FOUND WHILE PROBING.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7429 ***********************************************************************
 HV7429  DESIGNATION -  HYDE
 HV7429  PID         -  HV7429
 HV7429  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7429  COUNTRY     -  US
 HV7429  USGS QUAD   -  PISCATAWAY (2016)
 HV7429
 HV7429                         *CURRENT SURVEY CONTROL
 HV7429  ______________________________________________________________________
 HV7429* NAD 83(1993) POSITION- 38 44 21.14813(N) 076 55 44.69959(W)   ADJUSTED
 HV7429* NAVD 88 ORTHO HEIGHT -    75.1   (meters)      246.    (feet) VERTCON3
 HV7429  ______________________________________________________________________
 HV7429  GEOID HEIGHT    -        -32.560 (meters)                     GEOID18
 HV7429  LAPLACE CORR    -         -4.54  (seconds)                    DEFLEC18
 HV7429  HORZ ORDER      -  FIRST
 HV7429
 HV7429.The horizontal coordinates were established by classical geodetic methods
 HV7429.and adjusted by the National Geodetic Survey in November 1994.
 HV7429
 HV7429.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7429.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7429
 HV7429.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7429.GEOID18 height accuracy estimate available here.
 HV7429
 HV7429.Click photographs - Photos may exist for this station.
 HV7429
 HV7429.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7429
 HV7429. The following values were computed from the NAD 83(1993) position.
 HV7429
 HV7429;                    North         East     Units Scale Factor Converg.
 HV7429;SPC MD       -   119,058.708   406,165.461   MT  0.99995268   +0 02 40.2
 HV7429;SPC MD       -   390,611.78  1,332,561.18   sFT  0.99995268   +0 02 40.2
 HV7429;UTM  18      - 4,289,603.456   332,338.895   MT  0.99994616   -1 12 26.8
 HV7429
 HV7429!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7429!SPC MD       -   0.99999333  x   0.99995268  =   0.99994601
 HV7429!UTM  18      -   0.99999333  x   0.99994616  =   0.99993949
 HV7429
 HV7429:                Primary Azimuth Mark                     Grid Az
 HV7429:SPC MD       -  PAGETTS                                  008 42 15.4
 HV7429:UTM  18      -  PAGETTS                                  009 57 22.4
 HV7429
 HV7429_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3233889603(NAD 83)
 HV7429
 HV7429|---------------------------------------------------------------------|
 HV7429| PID    Reference Object                     Distance      Geod. Az  |
 HV7429|                                                           dddmmss.s |
 HV7429| HV7604 PAGETTS                             APPROX. 6.0 KM 0084455.6 |
 HV7429| HV7600 CLINTON WSSC TANK                   APPROX. 3.8 KM 0374049.2 |
 HV7429|---------------------------------------------------------------------|
 HV7429
 HV7429                          SUPERSEDED SURVEY CONTROL
 HV7429
 HV7429  NAD 83(1991)-  38 44 21.14730(N)    076 55 44.70014(W) AD(       ) 1
 HV7429  NAD 83(1986)-  38 44 21.14639(N)    076 55 44.71375(W) AD(       ) 1
 HV7429  NAD 27      -  38 44 20.73347(N)    076 55 45.80864(W) AD(       ) 1
 HV7429  NGVD 29 (07/19/86)   75.3    (m)          247.     (f) VERT ANG       
 HV7429
 HV7429.Superseded values are not recommended for survey control.
 HV7429
 HV7429.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7429.See file dsdata.pdf to determine how the superseded data were derived.
 HV7429
 HV7429_MARKER: DS = TRIANGULATION STATION DISK
 HV7429_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7429_STAMPING: HYDE 1970
 HV7429_MARK LOGO: CGS
 HV7429_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7429+STABILITY: SURFACE MOTION
 HV7429
 HV7429  HISTORY     - Date     Condition        Report By
 HV7429  HISTORY     - 1970     MONUMENTED       NGS
 HV7429
 HV7429                          STATION DESCRIPTION
 HV7429
 HV7429'DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7429'THE STATION IS ABOUT 8-1/4 MILES NORTH OF WALDORF, 4-1/2 MILES
 HV7429'SOUTH-SOUTHWEST OF CAMP SPRINGS, 2-1/2 MILES SOUTHWEST OF CLINTON
 HV7429'AND ON PROPERTY OWNED BY RODNEY FALLER, ROUTE 4, BOX 600, CLINTON,
 HV7429'MARYLAND, 20735.
 HV7429'
 HV7429'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND
 HV7429'STATE HIGHWAY 223, PISCATAWAY ROAD, IN CLINTON, GO WEST-SOUTHWEST
 HV7429'ON PISCATAWAY ROAD FOR 0.2 MILE TO THE CLINTON POST OFFICE ON
 HV7429'THE LEFT.  CONTINUE WEST-SOUTHWEST AND SOUTHWEST ON PISCATAWAY
 HV7429'ROAD FOR 2.25 MILES TO A SIDE ROAD LEFT, TIPPETT ROAD, OPPOSITE
 HV7429'THE HYDE AIR FIELD.  TURN LEFT AND GO SOUTH ON TIPPETT ROAD FOR
 HV7429'0.6 MILE TO THE STATION ON THE LEFT.
 HV7429'
 HV7429'THE STATION MARK IS A STANDARD DISK, STAMPED HYDE 1970, SET IN
 HV7429'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7429'PROJECTS 3 INCHES ABOVE THE GROUND.  IT IS 93.0 FEET NORTHEAST OF
 HV7429'A POWER LINE POLE NUMBERED PEP 835449, 72.0 FEET SOUTHEAST OF THE
 HV7429'CENTERLINE OF TIPPETT ROAD AND 5.2 FEET EAST OF A WITNESS POST.
 HV7429'THE UNDERGROUND MARK IS 38 INCHES BELOW THE GROUND SURFACE.
 HV7429'
 HV7429'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED HYDE NO 1 1970, SET
 HV7429'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7429'PROJECTS 5 INCHES ABOVE THE GROUND.  IT IS 133.0 FEET
 HV7429'EAST-NORTHEAST OF THE CENTERLINE OF TIPPETT ROAD, 67.0 FEET
 HV7429'EAST-NORTHEAST OF THE WINTESS POST AND ABOUT 4 FEET LOWER IN
 HV7429'ELEVATION THAN THE STATION.
 HV7429'
 HV7429'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED HYDE NO 2 1970, SET
 HV7429'IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7429'PROJECTS 6 INCHES ABOVE THE GROUND.  IT IS 76.0 FEET
 HV7429'NORTH-NORTHEAST OF A FIRE HYDRANT, 30.0 FEET EAST OF THE CENTERLINE
 HV7429'OF TIPPETT ROAD, 27.0 FEET SOUTHEAST OF THE POWER LINE POLE, AND
 HV7429'ABOUT THE SAME ELEVATION AS THE STATION.
 HV7429'
 HV7429'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK DUE TO THE
 HV7429'WOODS SURROUNDING THE STATION.
 HV7429'
 HV7429'RM 1 TO RM 2 OBSTRUCTED.
 HV7429'
 HV7429'SOUTH-SOUTHWEST OF CAMP SPRINGS, 2-1/2 MILES SOUTHWEST OF CLINTON
 HV7429'AND ON PROPERTY OWNED BY RODNEY FALLER, ROUTE 4, BOX 600, CLINTON,
 HV7429'MARYLAND, 20735.
 HV7429'
 HV7429'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 381 AND STATE
 HV7429'HIGHWAY 223, PISCATAWAY ROAD, IN CLINTON, GO WEST-SOUTHWEST ON
 HV7429'PISCATAWAY ROAD FOR 0.2 MILE TO THE CLINTON POST OFFICE ON THE
 HV7429'LEFT.  CONTINUE WEST-SOUTHWEST AND SOUTHWEST ON PISCATAWAY ROAD
 HV7429'FOR 2.25 MILES TO A SIDE ROAD LEFT, TIPPETT ROAD, OPPOSITE THE
 HV7429'HYDE AIR FIELD.  TURN LEFT AND GO SOUTH ON TIPPETT ROAD FOR 0.6
 HV7429'MILE TO THE STATION ON THE LEFT.
 HV7429'
 HV7429'THE STATION MARK IS A STANDARD DISK, STAMPED HYDE 1970, SET IN THE
 HV7429'TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT PROJECTS
 HV7429'3 INCHES ABOVE THE GROUND.  IT IS 93.0 FEET NORTHEAST OF A POWER
 HV7429'LINE POLE NUMBERED PEP 835449, 72.0 FEET SOUTHEAST OF THE
 HV7429'CENTERLINE OF TIPPETT ROAD AND 5.2 FEET EAST OF A WITNESS POST.
 HV7429'THE UNDERGROUND MARK IS 38 INCHES BELOW THE GROUND SURFACE.
 HV7429'
 HV7429'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED HYDE NO 1 1970, SET IN
 HV7429'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7429'PROJECTS 5 INCHES ABOVE THE GROUND.  IT IS 133.0 FEET
 HV7429'EAST-NORTHEAST OF THE CENTERLINE OF TIPPETT ROAD, 67.0 FEET
 HV7429'EAST-NORTHEAST OF THE WITNESS POST AND ABOUT 4 FEET LOWER IN
 HV7429'ELEVATION THAN THE STATION.
 HV7429'
 HV7429'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED HYDE NO 2 1970, SET IN
 HV7429'THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN DIAMETER, THAT
 HV7429'PROJECTS 6 INCHES ABOVE THE GROUND.  IT IS 76.0 FEET NORTH-NORTHEAST
 HV7429'OF A FIRE HYDRANT, 30.0 FEET EAST OF THE CENTERLINE OF TIPPETT
 HV7429'ROAD, 27.0 FEET SOUTHEAST OF THE POWER LINE POLE, AND ABOUT
 HV7429'THE SAME ELEVATION AS THE STATION.
 HV7429'
 HV7429'THERE WAS NO SUITABLE LOCATION FOR AN AZIMUTH MARK DUE TO THE WOODS
 HV7429'SURROUNDING THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6669 ***********************************************************************
 JV6669  HT_MOD      -  This is a Height Modernization Survey Station.
 JV6669  CBN         -  This is a Cooperative Base Network Control Station.
 JV6669  DESIGNATION -  HYDE
 JV6669  PID         -  JV6669
 JV6669  STATE/COUNTY-  MD/BALTIMORE
 JV6669  COUNTRY     -  US
 JV6669  USGS QUAD   -  WHITE MARSH (2016)
 JV6669
 JV6669                         *CURRENT SURVEY CONTROL
 JV6669  ______________________________________________________________________
 JV6669* NAD 83(2011) POSITION- 39 28 53.41326(N) 076 29 05.76774(W)   ADJUSTED
 JV6669* NAD 83(2011) ELLIP HT-    70.266 (meters)        (06/27/12)   ADJUSTED
 JV6669* NAD 83(2011) EPOCH   -  2010.00
 JV6669* NAVD 88 ORTHO HEIGHT -   102.93  (meters)      337.7   (feet) GPS OBS
 JV6669  ______________________________________________________________________
 JV6669  NAVD 88 orthometric height was determined with geoid model    GEOID99
 JV6669  GEOID HEIGHT    -        -32.668 (meters)                     GEOID99
 JV6669  GEOID HEIGHT    -        -32.668 (meters)                     GEOID18
 JV6669  NAD 83(2011) X  -  1,152,044.606 (meters)                     COMP
 JV6669  NAD 83(2011) Y  - -4,793,059.050 (meters)                     COMP
 JV6669  NAD 83(2011) Z  -  4,033,763.415 (meters)                     COMP
 JV6669  LAPLACE CORR    -         -2.95  (seconds)                    DEFLEC18
 JV6669
 JV6669  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6669  Standards:
 JV6669         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6669            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6669  -------------------------------------------------------------------
 JV6669  NETWORK    0.38   0.67           0.17   0.14   0.34      0.01887434
 JV6669  -------------------------------------------------------------------
 JV6669  Click here for local accuracies and other accuracy information.
 JV6669
 JV6669.The horizontal coordinates were established by GPS observations
 JV6669.and adjusted by the National Geodetic Survey in June 2012.
 JV6669
 JV6669.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6669.been affixed to the stable North American tectonic plate. See 
 JV6669.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6669
 JV6669.The horizontal coordinates are valid at the epoch date displayed above
 JV6669.which is a decimal equivalence of Year/Month/Day.
 JV6669
 JV6669.The orthometric height was determined by GPS observations and a
 JV6669.high-resolution geoid model using precise GPS observation and
 JV6669.processing techniques.
 JV6669
 JV6669.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6669.GEOID18 height accuracy estimate available here.
 JV6669
 JV6669.Click photographs - Photos may exist for this station.
 JV6669
 JV6669.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6669
 JV6669.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6669
 JV6669.The ellipsoidal height was determined by GPS observations
 JV6669.and is referenced to NAD 83.
 JV6669
 JV6669. The following values were computed from the NAD 83(2011) position.
 JV6669
 JV6669;                    North         East     Units Scale Factor Converg.
 JV6669;SPC MD       -   201,586.359   444,314.216   MT  1.00000566   +0 19 23.8
 JV6669;SPC MD       -   661,371.25  1,457,720.89   sFT  1.00000566   +0 19 23.8
 JV6669;UTM  18      - 4,371,264.161   372,290.109   MT  0.99980081   -0 56 39.5
 JV6669
 JV6669!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6669!SPC MD       -   0.99998898  x   1.00000566  =   0.99999464
 JV6669!UTM  18      -   0.99998898  x   0.99980081  =   0.99978979
 JV6669
 JV6669_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7229071264(NAD 83)
 JV6669
 JV6669                          SUPERSEDED SURVEY CONTROL
 JV6669
 JV6669  NAD 83(2007)-  39 28 53.41346(N)    076 29 05.76839(W) AD(2002.00) 0
 JV6669  ELLIP H (02/10/07)   70.284  (m)                       GP(2002.00)    
 JV6669  ELLIP H (02/12/02)   70.281  (m)                       GP(       ) 4 1
 JV6669  ELLIP H (03/31/00)   70.247  (m)                       GP(       ) 3 1
 JV6669  ELLIP H (12/03/93)   70.280  (m)                       GP(       ) 4 1
 JV6669  NAD 83(1991)-  39 28 53.41339(N)    076 29 05.76845(W) AD(       ) B
 JV6669  ELLIP H (10/23/91)   70.289  (m)                       GP(       ) 4 1
 JV6669  NAVD 88 (04/08/97)  102.9    (m)  GEOID93  model used  GPS OBS        
 JV6669  NGVD 29 (10/23/91)  103.2    (m)  UNKNOWN  model used  GPS OBS        
 JV6669
 JV6669.Superseded values are not recommended for survey control.
 JV6669
 JV6669.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6669.See file dsdata.pdf to determine how the superseded data were derived.
 JV6669
 JV6669_MARKER: DH = HORIZONTAL CONTROL DISK
 JV6669_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6669_STAMPING: HYDES 1990
 JV6669_MARK LOGO: NGS
 JV6669_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV6669_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6669+STABILITY: SURFACE MOTION
 JV6669_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6669+SATELLITE: SATELLITE OBSERVATIONS - July 17, 2008
 JV6669
 JV6669  HISTORY     - Date     Condition        Report By
 JV6669  HISTORY     - 1990     MONUMENTED       NGS
 JV6669  HISTORY     - 19901123 GOOD             NGS
 JV6669  HISTORY     - 19911112 GOOD             MDSHA
 JV6669  HISTORY     - 19930511 GOOD             NOS
 JV6669  HISTORY     - 19950222 GOOD             MCCRON
 JV6669  HISTORY     - 19970615 GOOD             MD-005
 JV6669  HISTORY     - 19990215 GOOD             GEOMET
 JV6669  HISTORY     - 20000327 GOOD             MDSHA
 JV6669  HISTORY     - 20010705 GOOD             DMW
 JV6669  HISTORY     - 20060312 GOOD             GPSSS
 JV6669  HISTORY     - 20080717 GOOD             JMT
 JV6669
 JV6669                          STATION DESCRIPTION
 JV6669
 JV6669'DESCRIBED BY NATIONAL GEODETIC SURVEY 1990
 JV6669'THE STATION IS LOCATED ABOUT 14.4 KM (8.9 MI) NORTHEAST OF TOWSON, 1.6
 JV6669'KM (1.0 MI) SOUTHWEST OF BALDWIN, AND ON THE WEST SIDE OF THE
 JV6669'ATHLETIC FIELDS ON HYDES ROAD AT HYDES MARYLAND. THE PROPERTY IS
 JV6669'OWNED BY THE BALTIMORE COUNTY BOARD OF EDUCATION.
 JV6669'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 147 (
 JV6669'HARFORD ROAD ) AND LONG GREEN PIKE, 2.0 MI (3.2 KM) SOUTHWEST OF GLEN
 JV6669'ARM, GO NORTH ON LONGREEN PIKE FOR 5.92 KM (3.68 MI) TO A SIDE ROAD
 JV6669'ON THE LEFT ( HYDES ROAD ). TURN LEFT AND GO WEST ON HYDES ROAD FOR
 JV6669'0.24 KM (0.15 MI) TO AN ENTRANCE ON THE LEFT TO ATHLETIC FIELDS.
 JV6669'TURN LEFT AND GO SOUTH TO THE END OF THE PARKING LOT AND ACROSS THE
 JV6669'FIELD IN A SOUTHWESTERLY DIRECTION FOR ABOUT 140 YARDS TO THE
 JV6669'STATION.
 JV6669'THE STATION MARK IS A STANDARD NGS DISK SET INTO THE TOP OF A 0.305 M
 JV6669'(1.001 FT) ROUND CONCRETE MONUMENT WHICH IS FLUSH WITH THE SURFACE OF
 JV6669'THE GROUND. IT IS 9.60 M (31.50 FT) EAST OF A WITNESS POST, 85.95 M
 JV6669'(281.99 FT) SOUTH SOUTHWEST OF A HOME PLATE OF THE SECOND BALL
 JV6669'DIAMOND SOUTH OF HYDES ROAD, 101.65 M (333.50 FT) NORTHWEST OF A HOME
 JV6669'PLATE OF THE SOUTHERNMOST OF THREE BALL DIAMONDS, 79.86 M
 JV6669'(262.01 FT) NORTHEAST OF A WOOD FENCE POST AT THE CORNER OF A
 JV6669'CULTIVATED FIELD.
 JV6669
 JV6669                          STATION RECOVERY (1990)
 JV6669
 JV6669'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 JV6669'THE STATION IS LOCATED ABOUT 14.5 KM (9.0 MI) NORTHEAST OF TOWSON, 1.6
 JV6669'KM (1.0 MI) SOUTHWEST OF BALDWIN, 0.8 KM (0.5 MI) EAST OF HYDES, ON
 JV6669'THE WEST SIDE OF THE COUNTY MAINTAINED ATHLETIC FIELDS ALONG HYDES
 JV6669'ROAD, JUST EAST OF EDGE OF CULTIVATED FIELD, AND JUST SOUTH OF THE
 JV6669'CENTER ONE OF THREE BASEBALL DIAMONDS.  OWNERSHIP--BALTIMORE COUNTY
 JV6669'BOARD OF EDUCATION.
 JV6669'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 145 AND 146 IN
 JV6669'JACKSONVILLE, GO EAST ON HIGHWAY 145 FOR 2.17 KM (1.35 MI) TO A PAVED
 JV6669'CROSSROAD AT STOPLIGHT.  TURN RIGHT, SOUTH, ON MANOR ROAD FOR 3.08 KM
 JV6669'(1.91 MI) TO A PAVED ROAD LEFT AT ST JOHN LUTHERAN CHURCH ON THE
 JV6669'RIGHT.  TURN LEFT, EAST, ON HYDES ROAD FOR 2.63 KM (1.63 MI) TO A
 JV6669'PAVED ROAD RIGHT AT HYDES (11TH DISTRICT ROAD).  CONTINUE AHEAD FOR
 JV6669'0.87 KM (0.54 MI) TO A DIRT PARKING LOT ENTRANCE ON THE RIGHT (0.25
 JV6669'KM BEFORE REACHING A T-ROAD).  TURN RIGHT, SOUTH, ALONG TREE LINE FOR
 JV6669'0.06 KM (0.04 MI) TO A LOCKED CABLE GATE AT END OF LOT.  PASS THROUGH
 JV6669'GATE, THEN BEAR HALF RIGHT, SOUTHWEST, ACROSS GRASS FOR 0.15 KM
 JV6669'(0.09 MI) TO THE STATION.
 JV6669'STATION MARK IS SET IN THE TOP OF A 30-CM ROUND CONCRETE POST THAT IS
 JV6669'FLUSH WITH THE GROUND.  IT IS 9.6 M (31.5 FT) EAST OF A FIBERGLASS
 JV6669'WITNESS POST AT EDGE OF CULTIVATED FIELD, 79.8 M (261.8 FT)
 JV6669'NORTH-NORTHEAST OF A 15-CM POST AT SOUTHWEST CORNER OF THE GRASS AREA,
 JV6669'84.7 M (277.9 FT) SOUTH OF THE SOUTHEWEST WEST END OF THE CENTRAL
 JV6669'BALL DIAMOND BACKSTOP, AND 53.5 M (175.5 FT) WEST-NORTHWEST OF THE
 JV6669'WEST POST OF A SOCCER GOAL.
 JV6669'DESCRIBED BY G.R.HEID.
 JV6669
 JV6669                          STATION RECOVERY (1991)
 JV6669
 JV6669'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV6669'RECOVERED IN GOOD CONDITION.
 JV6669
 JV6669                          STATION RECOVERY (1993)
 JV6669
 JV6669'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1993
 JV6669'RECOVERED ON THIS DATE.
 JV6669'STATION IS STAMPED ---HYDES 1990---.
 JV6669
 JV6669                          STATION RECOVERY (1995)
 JV6669
 JV6669'RECOVERY NOTE BY J R MCCRONE JR INCORPORATED 1995 (HAS)
 JV6669'RECOVERED AS DESCRIBED.
 JV6669
 JV6669                          STATION RECOVERY (1997)
 JV6669
 JV6669'RECOVERY NOTE BY BALTIMORE COUNTY MARYLAND 1997 (WEH)
 JV6669'RECOVERED BY THE BALTIMORE COUNTY SURVEY DIVISION 1997 (WEH) RECOVERED
 JV6669'AS DESCRIBED.
 JV6669
 JV6669                          STATION RECOVERY (1999)
 JV6669
 JV6669'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1999 (FJ)
 JV6669'STATION IS STAMPED, HYDES 1990.
 JV6669
 JV6669                          STATION RECOVERY (2000)
 JV6669
 JV6669'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 JV6669'RECOVERED AS DESCRIBED.
 JV6669
 JV6669                          STATION RECOVERY (2001)
 JV6669
 JV6669'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 2001 (JMS)
 JV6669'RECOVERED IN GOOD CONDITION.
 JV6669
 JV6669                          STATION RECOVERY (2006)
 JV6669
 JV6669'RECOVERY NOTE BY GPS SALES AND SERVICES 2006 (HW)
 JV6669'RECOVERED BY HENRY WILLIAMS OF WINGS MAPPING
 JV6669
 JV6669                          STATION RECOVERY (2008)
 JV6669
 JV6669'RECOVERY NOTE BY JOHNSON MIRMIRAN AND THOMPSON PA 2008 (JAF)
 JV6669'RECOVERED AS DESCRIBED
 JV6669'MONUMENT FALLS IN TEMPORARY PLAYING FIELD
 JV6669'CHILDREN MAY BE PRESENT
 JV6669'(GREAT FOR GPS OBSERVATIONS)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1224 ***********************************************************************
 JU1224  DESIGNATION -  HYDE AZ
 JU1224  PID         -  JU1224
 JU1224  STATE/COUNTY-  MD/QUEEN ANNES
 JU1224  COUNTRY     -  US
 JU1224  USGS QUAD   -  CHURCH HILL (2017)
 JU1224
 JU1224                         *CURRENT SURVEY CONTROL
 JU1224  ______________________________________________________________________
 JU1224* NAD 83(1986) POSITION- 39 14 33.7    (N) 075 53 55.5    (W)   HD_HELD2
 JU1224* NAVD 88 ORTHO HEIGHT -     8.725 (meters)       28.63  (feet) ADJUSTED
 JU1224  ______________________________________________________________________
 JU1224  GEOID HEIGHT    -        -33.599 (meters)                     GEOID18
 JU1224  DYNAMIC HEIGHT  -          8.720 (meters)       28.61  (feet) COMP
 JU1224  MODELED GRAVITY -    980,109.2   (mgal)                       NAVD 88
 JU1224
 JU1224  VERT ORDER      -  SECOND    CLASS 0
 JU1224
 JU1224.The horizontal coordinates were established by autonomous hand held GPS
 JU1224.observations and have an estimated accuracy of +/- 10 meters.
 JU1224
 JU1224.The orthometric height was determined by differential leveling and
 JU1224.adjusted by the NATIONAL GEODETIC SURVEY
 JU1224.in June 1991.
 JU1224
 JU1224.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1224.GEOID18 height accuracy estimate available here.
 JU1224
 JU1224.Click photographs - Photos may exist for this station.
 JU1224
 JU1224.The dynamic height is computed by dividing the NAVD 88
 JU1224.geopotential number by the normal gravity value computed on the
 JU1224.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1224.degrees latitude (g = 980.6199 gals.).
 JU1224
 JU1224.The modeled gravity was interpolated from observed gravity values.
 JU1224
 JU1224;                    North         East    Units  Estimated Accuracy
 JU1224;SPC MD       -   175,522.      495,065.      MT  (+/- 10 meters HH2 GPS)
 JU1224
 JU1224_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2244144094(NAD 83)
 JU1224
 JU1224                          SUPERSEDED SURVEY CONTROL
 JU1224
 JU1224  NGVD 29 (11/26/84)    8.965  (m)           29.41   (f) ADJUSTED    2 0
 JU1224
 JU1224.Superseded values are not recommended for survey control.
 JU1224
 JU1224.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1224.See file dsdata.pdf to determine how the superseded data were derived.
 JU1224
 JU1224_MARKER: DR = REFERENCE MARK DISK
 JU1224_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1224_STAMPING: HYDE AZ MARK 1934
 JU1224_MARK LOGO: CGS
 JU1224_PROJECTION: PROJECTING 30 CENTIMETERS
 JU1224_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1224+STABILITY: SURFACE MOTION
 JU1224_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1224+SATELLITE: SATELLITE OBSERVATIONS - May 03, 2013
 JU1224
 JU1224  HISTORY     - Date     Condition        Report By
 JU1224  HISTORY     - 1934     MONUMENTED       CGS
 JU1224  HISTORY     - 1964     GOOD             CGS
 JU1224  HISTORY     - 19950913 GOOD             USPSQD
 JU1224  HISTORY     - 20020306 GOOD             USPSQD
 JU1224  HISTORY     - 20060318 GOOD             USPSQD
 JU1224  HISTORY     - 20130503 GOOD             ARCSHE
 JU1224
 JU1224                          STATION DESCRIPTION
 JU1224
 JU1224'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1224'2.4 MI E FROM CRUMPTON.
 JU1224'1.0 MILE SOUTH ALONG STATE HIGHWAY 290 FROM CRUMPTON, THENCE EAST
 JU1224'ALONG HIGHWAY 544 FOR 1.1 MILES, THENCE NORTH ALONG ROAD TO THE
 JU1224'PINE FOREST FARM (PRIVATE ROAD) FOR 0.3 MILE, 17 FEET WEST OF
 JU1224'CENTER LINE OF THE ROAD, 2 FEET NORTH OF POWER LINE POLE NO. 10
 JU1224'AND 1.0 FOOT WEST OF THE OLD BOARD FENCE.  A STANDARD REFERENCE
 JU1224'MARK DISK IN A CONCRETE MONUMENT PROJECTING ABOUT 3-INCHES.
 JU1224
 JU1224                          STATION RECOVERY (1995)
 JU1224
 JU1224'RECOVERY NOTE BY US POWER SQUADRON 1995
 JU1224'RECOVERED IN GOOD CONDITION.
 JU1224
 JU1224                          STATION RECOVERY (2002)
 JU1224
 JU1224'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU1224'REFERENCED WITNESS POST DOES NOT EXIST.  REFERENCED BOARD FENCE DOES
 JU1224'NOT EXIST.  DIRT ROAD IS NOW NAMED PINE FOREST FARM LANE.
 JU1224
 JU1224                          STATION RECOVERY (2006)
 JU1224
 JU1224'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JU1224'REFERENCED POWER POLE NUMBER 10 HAS ADDITIONAL DESIGNATION 4Q.
 JU1224
 JU1224                          STATION RECOVERY (2013)
 JU1224
 JU1224'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2013 (MRA)
 JU1224'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1222 ***********************************************************************
 JU1222  DESIGNATION -  HYDE RM 1
 JU1222  PID         -  JU1222
 JU1222  STATE/COUNTY-  MD/QUEEN ANNES
 JU1222  COUNTRY     -  US
 JU1222  USGS QUAD   -  CHURCH HILL (2017)
 JU1222
 JU1222                         *CURRENT SURVEY CONTROL
 JU1222  ______________________________________________________________________
 JU1222* NAD 83(1986) POSITION- 39 14 39.39   (N) 075 53 44.68   (W)   HD_HELD1
 JU1222* NAVD 88 ORTHO HEIGHT -     7.242 (meters)       23.76  (feet) ADJUSTED
 JU1222  ______________________________________________________________________
 JU1222  GEOID HEIGHT    -        -33.601 (meters)                     GEOID18
 JU1222  DYNAMIC HEIGHT  -          7.238 (meters)       23.75  (feet) COMP
 JU1222  MODELED GRAVITY -    980,109.2   (mgal)                       NAVD 88
 JU1222
 JU1222  VERT ORDER      -  SECOND    CLASS 0
 JU1222
 JU1222.The horizontal coordinates were determined by differentially corrected
 JU1222.hand held GPS observations or other comparable positioning techniques
 JU1222.and have an estimated accuracy of +/- 3 meters.
 JU1222
 JU1222.The orthometric height was determined by differential leveling and
 JU1222.adjusted by the NATIONAL GEODETIC SURVEY
 JU1222.in June 1991.
 JU1222
 JU1222.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1222.GEOID18 height accuracy estimate available here.
 JU1222
 JU1222.Click photographs - Photos may exist for this station.
 JU1222
 JU1222.The dynamic height is computed by dividing the NAVD 88
 JU1222.geopotential number by the normal gravity value computed on the
 JU1222.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1222.degrees latitude (g = 980.6199 gals.).
 JU1222
 JU1222.The modeled gravity was interpolated from observed gravity values.
 JU1222
 JU1222;                    North         East    Units  Estimated Accuracy
 JU1222;SPC MD       -   175,700.5     495,322.8     MT  (+/- 3 meters HH1 GPS) 
 JU1222
 JU1222_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2270244266(NAD 83)
 JU1222
 JU1222                          SUPERSEDED SURVEY CONTROL
 JU1222
 JU1222  NGVD 29 (11/26/84)    7.483  (m)           24.55   (f) ADJUSTED    2 0
 JU1222
 JU1222.Superseded values are not recommended for survey control.
 JU1222
 JU1222.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1222.See file dsdata.pdf to determine how the superseded data were derived.
 JU1222
 JU1222_MARKER: DR = REFERENCE MARK DISK
 JU1222_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1222_STAMPING: HYDE NO 1 1934
 JU1222_MARK LOGO: CGS
 JU1222_MAGNETIC: N = NO MAGNETIC MATERIAL
 JU1222_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1222+STABILITY: SURFACE MOTION
 JU1222_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1222+SATELLITE: SATELLITE OBSERVATIONS - March 18, 2006
 JU1222
 JU1222  HISTORY     - Date     Condition        Report By
 JU1222  HISTORY     - 1934     MONUMENTED       CGS
 JU1222  HISTORY     - 1964     GOOD             CGS
 JU1222  HISTORY     - 1989     GOOD             USPSQD
 JU1222  HISTORY     - 19910516 GOOD             MDSHA
 JU1222  HISTORY     - 20020306 GOOD             USPSQD
 JU1222  HISTORY     - 20060318 GOOD             USPSQD
 JU1222
 JU1222                          STATION DESCRIPTION
 JU1222
 JU1222'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1222'3.8 MI SE FROM CRUMPTON.
 JU1222'1.0 MILES SOUTH ALONG STATE HIGHWAY 290 FROM CRUMPTON, THENCE
 JU1222'EAST ALONG STATE HIGHWAY 544 FOR 1.3 MILES, THENCE NORTH ON
 JU1222'PRIVATE ROAD THROUGH THE WOODS FOR 0.4 MILE TO NORTH EDGE OF WOODS
 JU1222'AND A FIELD.  66.0 FEET EAST OF THE CENTER LINE OF THE PRIVATE
 JU1222'ROAD AND AT EDGE OF FIELD AND WOOD, A TRIANGULATION STATION
 JU1222'REFERENCE MARK DISK SET IN THE TOP OF A CONCRETE MONUMENT
 JU1222'PROJECTING ABOUT 2-INCHES.
 JU1222
 JU1222                          STATION RECOVERY (1989)
 JU1222
 JU1222'RECOVERY NOTE BY US POWER SQUADRON 1989 (GSW)
 JU1222'RECOVERED IN GOOD CONDITION.
 JU1222
 JU1222                          STATION RECOVERY (1991)
 JU1222
 JU1222'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JU1222'RECOVERED IN GOOD CONDITION.
 JU1222
 JU1222                          STATION RECOVERY (2002)
 JU1222
 JU1222'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU1222'RECOVERED IN GOOD CONDITION.
 JU1222
 JU1222                          STATION RECOVERY (2006)
 JU1222
 JU1222'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JU1222'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1223 ***********************************************************************
 JU1223  DESIGNATION -  HYDE RM 2
 JU1223  PID         -  JU1223
 JU1223  STATE/COUNTY-  MD/QUEEN ANNES
 JU1223  COUNTRY     -  US
 JU1223  USGS QUAD   -  CHURCH HILL (2017)
 JU1223
 JU1223                         *CURRENT SURVEY CONTROL
 JU1223  ______________________________________________________________________
 JU1223* NAD 83(1986) POSITION- 39 14 39.67   (N) 075 53 43.67   (W)   HD_HELD1
 JU1223* NAVD 88 ORTHO HEIGHT -     7.984 (meters)       26.19  (feet) ADJUSTED
 JU1223  ______________________________________________________________________
 JU1223  GEOID HEIGHT    -        -33.601 (meters)                     GEOID18
 JU1223  DYNAMIC HEIGHT  -          7.980 (meters)       26.18  (feet) COMP
 JU1223  MODELED GRAVITY -    980,109.2   (mgal)                       NAVD 88
 JU1223
 JU1223  VERT ORDER      -  SECOND    CLASS 0
 JU1223
 JU1223.The horizontal coordinates were determined by differentially corrected
 JU1223.hand held GPS observations or other comparable positioning techniques
 JU1223.and have an estimated accuracy of +/- 3 meters.
 JU1223
 JU1223.The orthometric height was determined by differential leveling and
 JU1223.adjusted by the NATIONAL GEODETIC SURVEY
 JU1223.in June 1991.
 JU1223
 JU1223.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1223.GEOID18 height accuracy estimate available here.
 JU1223
 JU1223.Click photographs - Photos may exist for this station.
 JU1223
 JU1223.The dynamic height is computed by dividing the NAVD 88
 JU1223.geopotential number by the normal gravity value computed on the
 JU1223.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1223.degrees latitude (g = 980.6199 gals.).
 JU1223
 JU1223.The modeled gravity was interpolated from observed gravity values.
 JU1223
 JU1223;                    North         East    Units  Estimated Accuracy
 JU1223;SPC MD       -   175,709.5     495,346.9     MT  (+/- 3 meters HH1 GPS) 
 JU1223
 JU1223_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2272644275(NAD 83)
 JU1223
 JU1223                          SUPERSEDED SURVEY CONTROL
 JU1223
 JU1223  NGVD 29 (11/26/84)    8.225  (m)           26.98   (f) ADJUSTED    2 0
 JU1223
 JU1223.Superseded values are not recommended for survey control.
 JU1223
 JU1223.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1223.See file dsdata.pdf to determine how the superseded data were derived.
 JU1223
 JU1223_MARKER: DR = REFERENCE MARK DISK
 JU1223_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1223_STAMPING: HYDE NO 2 1934
 JU1223_MARK LOGO: CGS
 JU1223_PROJECTION: PROJECTING 10 CENTIMETERS
 JU1223_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1223+STABILITY: SURFACE MOTION
 JU1223_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1223+SATELLITE: SATELLITE OBSERVATIONS - March 18, 2006
 JU1223
 JU1223  HISTORY     - Date     Condition        Report By
 JU1223  HISTORY     - 1934     MONUMENTED       CGS
 JU1223  HISTORY     - 1964     GOOD             CGS
 JU1223  HISTORY     - 1989     GOOD             USPSQD
 JU1223  HISTORY     - 20020306 GOOD             USPSQD
 JU1223  HISTORY     - 20060318 GOOD             USPSQD
 JU1223
 JU1223                          STATION DESCRIPTION
 JU1223
 JU1223'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1223'3.8 MI SE FROM CRUMPTON.
 JU1223'1.0 MILE SOUTH ALONG STATE HIGHWAY 290 FROM CRUMPTON, THENCE EAST
 JU1223'ALONG STATE HIGHWAY 544 FOR 1.3 MILES, THENCE NORTH ON A PRIVATE
 JU1223'ROAD THROUGH THE WOOD FOR 0.4 MILE TO THE NORTH EDGE OF THE WOODS
 JU1223'AND A FIELD.  AT A CURVE IN THE WOODS, 204 FEET WEST OF THE
 JU1223'CENTER LINE OF THE PRIVATE ROAD AND AT THE EDGE OF THE FIELD AND
 JU1223'WOODS.  A TRIANGULATION STATION REFERENCE MARK DISK SET IN THE
 JU1223'TOP OF A CONCRETE MONUMENT PROJECTING ABOUT 4-INCHES.
 JU1223
 JU1223                          STATION RECOVERY (1989)
 JU1223
 JU1223'RECOVERY NOTE BY US POWER SQUADRON 1989 (GSW)
 JU1223'RECOVERED IN GOOD CONDITION.
 JU1223
 JU1223                          STATION RECOVERY (2002)
 JU1223
 JU1223'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JU1223'REFERENCED PRIVATE ROAD IS NOW PAVED AND LEADS THROUGH A DEVELOPING
 JU1223'COMMUNITY.  THE MARK IS LOCATED ALONG THE SE PROPERTY LINE OF 337
 JU1223'FORDS LANDING LANE.
 JU1223
 JU1223                          STATION RECOVERY (2006)
 JU1223
 JU1223'RECOVERY NOTE BY US POWER SQUADRON 2006 (KN)
 JU1223'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7613 ***********************************************************************
 HV7613  DESIGNATION -  HYDRO
 HV7613  PID         -  HV7613
 HV7613  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7613  COUNTRY     -  US
 HV7613  USGS QUAD   -  ANACOSTIA (2016)
 HV7613
 HV7613                         *CURRENT SURVEY CONTROL
 HV7613  ______________________________________________________________________
 HV7613* NAD 83(1993) POSITION- 38 50 44.41562(N) 076 55 48.86046(W)   ADJUSTED
 HV7613* NAVD 88 ORTHO HEIGHT -    87.9   (meters)      288.    (feet) VERTCON3
 HV7613  ______________________________________________________________________
 HV7613  GEOID HEIGHT    -        -32.347 (meters)                     GEOID18
 HV7613  LAPLACE CORR    -         -4.30  (seconds)                    DEFLEC18
 HV7613  HORZ ORDER      -  FIRST
 HV7613
 HV7613.The horizontal coordinates were established by classical geodetic methods
 HV7613.and adjusted by the National Geodetic Survey in November 1994.
 HV7613
 HV7613.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV7613.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV7613
 HV7613.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7613.GEOID18 height accuracy estimate available here.
 HV7613
 HV7613.Click photographs - Photos may exist for this station.
 HV7613
 HV7613.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7613
 HV7613. The following values were computed from the NAD 83(1993) position.
 HV7613
 HV7613;                    North         East     Units Scale Factor Converg.
 HV7613;SPC MD       -   130,876.690   406,055.945   MT  0.99994999   +0 02 37.6
 HV7613;SPC MD       -   429,384.61  1,332,201.88   sFT  0.99994999   +0 02 37.6
 HV7613;UTM  18      - 4,301,420.944   332,487.907   MT  0.99994554   -1 12 39.5
 HV7613
 HV7613!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7613!SPC MD       -   0.99999129  x   0.99994999  =   0.99994128
 HV7613!UTM  18      -   0.99999129  x   0.99994554  =   0.99993683
 HV7613
 HV7613:                Primary Azimuth Mark                     Grid Az
 HV7613:SPC MD       -  BRADBURY HEIGHTS WSSD TANK               346 46 50.9
 HV7613:UTM  18      -  BRADBURY HEIGHTS WSSD TANK               348 02 08.0
 HV7613
 HV7613_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3248701420(NAD 83)
 HV7613
 HV7613|---------------------------------------------------------------------|
 HV7613| PID    Reference Object                     Distance      Geod. Az  |
 HV7613|                                                           dddmmss.s |
 HV7613| CX2922 HYDRO RM 1                           54.273 METERS 03314     |
 HV7613| HV7606 SUITLAND ST BERNADINES CATH CH      APPROX. 1.6 KM 0331827.1 |
 HV7613| HV7597 SUITLAND RAD STA WPGC FM N MST      APPROX. 2.6 KM 0402205.7 |
 HV7613| HV7607 SUITLAND LAREINE CATH HS SPIRE      APPROX. 1.4 KM 0435123.1 |
 HV7613| HV7611 SUITLAND TANK                       APPROX. 0.5 KM 0494611.2 |
 HV7613| CX2923 HYDRO RM 2                           35.634 METERS 12113     |
 HV7613| CX2924 HYDRO RM 3                                         2550126.0 |
 HV7613| HV7617 SUITLAND US ARMY RELAY TOWER        APPROX. 0.6 KM 2574214.4 |
 HV7613| HV7614 SUITLAND DCA ARSR                   APPROX. 1.2 KM 3192329.0 |
 HV7613| HV7616 BRADBURY HEIGHTS WSSD TANK          APPROX. 2.8 KM 3464928.5 |
 HV7613|---------------------------------------------------------------------|
 HV7613
 HV7613                          SUPERSEDED SURVEY CONTROL
 HV7613
 HV7613  NAD 83(1991)-  38 50 44.41489(N)    076 55 48.86099(W) AD(       ) 1
 HV7613  NAD 83(1986)-  38 50 44.41374(N)    076 55 48.87331(W) AD(       ) 1
 HV7613  NAD 27      -  38 50 44.00835(N)    076 55 49.96678(W) AD(       ) 1
 HV7613  NGVD 29 (07/19/86)   88.1    (m)          289.     (f) VERT ANG       
 HV7613
 HV7613.Superseded values are not recommended for survey control.
 HV7613
 HV7613.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7613.See file dsdata.pdf to determine how the superseded data were derived.
 HV7613
 HV7613_MARKER: DS = TRIANGULATION STATION DISK
 HV7613_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7613_STAMPING: HYDRO 1958
 HV7613_MARK LOGO: CGS
 HV7613_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7613+STABILITY: SURFACE MOTION
 HV7613
 HV7613  HISTORY     - Date     Condition        Report By
 HV7613  HISTORY     - 1958     MONUMENTED       CGS
 HV7613  HISTORY     - 1970     SEE DESCRIPTION  NGS
 HV7613  HISTORY     - 1975     GOOD             NGS
 HV7613
 HV7613                          STATION DESCRIPTION
 HV7613
 HV7613'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7613'STATION IS LOCATED ON THE GROUNDS AND AT THE OFFICE BUILDING OF THE
 HV7613'U.S. NAVY HYDROGRAPHIC BUILDING, IN SUITLAND.  ABOUT 7.0 MILES
 HV7613'SOUTHEAST OF THE CENTER OF WASHINGTON D.C..  STATION IS 21 FEET
 HV7613'EAST OF WEST FENCE CORNER, 17 FEET SOUTH OF AN 8 INCH TREE, 15
 HV7613'FEET NORTHEAST OF FENCE CORNER AND 16 FEET SOUTHEAST OF FENCE.
 HV7613'THE MARK IS SET FLUSH AND THE DISK IS STAMPED HYDRO 1958.
 HV7613'
 HV7613'REFERENCE MARK NO. 1 IS 7-1/2 FEET WEST-SOUTHWEST OF GATE AND 1 FOOT
 HV7613'SOUTH-SOUTHEAST OF FENCE.  THE MARK IS A STANDARD DISK CEMENTED
 HV7613'FLUSH IN A DRILLHOLE IN SIDEWALK AND THE DISK IS STAMPED HYDRO NO 1
 HV7613'1958.
 HV7613'
 HV7613'REFERENCE MARK NO. 2 IS 21 FEET SOUTHWEST OF HYDROGRAPHIC BUILDING
 HV7613'AND 29 FEET NORTHEAST OF FENCE.  THE MARK IS A STANDARD DISK SET IN
 HV7613'A DRILLHOLE IN BLACK TOP DRIVEWAY.  THE MARK IS SET FLUSH AND THE
 HV7613'DISK IS STAMPED HYDRO NO 2 1958.
 HV7613'
 HV7613'TO REACH FROM THE JUNCTION OF STATE HIGHWAY NO. 458 AND STATE
 HV7613'HIGHWAY NO. 218 IN SUITLAND, GO SOUTHWEST ON STATE HIGHWAY NO. 458
 HV7613'(SILVER SPRINGS ROAD) FOR 0.3 MILE TO SURFACED ROAD RIGHT OPPOSITE
 HV7613'KENNEY SHOE STORE ON LEFT.  TURN RIGHT AND GO WEST THROUGH PARKING
 HV7613'LOT FOR 0.05 MILE TO GUARD GATE.  TURN LEFT AND GO SOUTH FOR 0.05
 HV7613'MILE TO GATE AT SOUTHEAST CORNER OF BUILDING.  TURN RIGHT
 HV7613'THROUGH GATE AND GO WESTERLY ALONE SOUTH SIDE OF BUILDING FOR
 HV7613'0.05 MILE TO NODDED AREA AT SOUTHWEST CORNER OF BUILDING AND
 HV7613'STATION AS DESCRIBED.
 HV7613'
 HV7613'NOTE--BRADBURY HEIGHTS (WSSD) WATER TANK WAS USED AS AZIMUTH MARK.
 HV7613'
 HV7613'HEIGHT OF LIGHT ABOVE STATION MARK 34 METERS.
 HV7613
 HV7613                          STATION RECOVERY (1970)
 HV7613
 HV7613'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 HV7613'THE STATION MARK AND REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 HV7613'CONDITION.  THE ROUTING TO THE STATION WAS ALSO ADEQUATE,
 HV7613'HOWEVER, THE BRADBURY HEIGHTS WSSD WATER TANK IS NO LONGER
 HV7613'VISIBLE FROM THE GROUND AND A DISCREPANCY OF 0.018 METER WAS
 HV7613'NOTED IN THE DISTANCE TO REFERENCE MARK 1.  THERE WAS NO APPARENT
 HV7613'MOVEMENT OF THE MARK AND THE CURRENT MEASUREMENT WAS
 HV7613'VERIFIED.  A REFERENCE MARK 3 WAS ESTABLISHED AT THIS TIME.
 HV7613'
 HV7613'FOLLOWING IS A NEW DESCRIPTION.
 HV7613'
 HV7613'THE STATION IS ABOUT 5 MILES NORTHEAST OF OXON HILL, 1-1/2
 HV7613'MILES SOUTHEAST OF THE MARYLAND-DISTRICT OF COLUMBIA BOUNDARY
 HV7613'LINE, IN SUITLAND AND ON THE GROUNDS OF THE U.S. NAVY
 HV7613'HYDROGRAPHIC OFFICE.
 HV7613'
 HV7613'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 458
 HV7613'AND STATE HIGHWAY 218 IN SUITLAND, GO SOUTHWEST ON STATE
 HV7613'HIGHWAY 458 FOR 0.3 MILE TO A SIDE ROAD RIGHT AND THE ENTRANCE
 HV7613'TO THE REAR OF THE U.S. NAVY HYDROGRAPHIC OFFICE BUILDING ON THE
 HV7613'RIGHT.  (TO REACH REFERENCE MARK 3 FROM THIS POINT, TURN RIGHT
 HV7613'AND GO WEST, THEN NORTHWEST ON THE ACCESS ROAD TO THE VISITORS
 HV7613'PARKING AREA FOR THE HYDROGRAHIC OFFICE FOR 0.1 MILE TO A
 HV7613'PARKING LOT AHEAD AT A T-INTERSECTION.  ENTER THE PARKING LOT,
 HV7613'THEN BEAR LEFT, WEST FOR 0.1 MILE TO THE TOP OF A HILL AND
 HV7613'REFERENCE MARK 3 CEMENTED IN A DRILL HOLE IN A CONCRETE
 HV7613'PATIO OF A PICNIC AREA.) TURN RIGHT AND GO NORTHWEST ACROSS
 HV7613'A PARKING LOT FOR 0.05 MILE TO A GUARD SHACK AT THE REAR OF THE
 HV7613'BUILDING.  TURN LEFT AND GO SOUTHWEST FOR 0.05 MILE
 HV7613'TO A GATE ON THE RIGHT.  TURN RIGHT AND GO NORTHWEST FOR
 HV7613'0.05 MILE TO THE STATION AT THE WEST CORNER OF THE
 HV7613'BUILDING.
 HV7613'
 HV7613'THE STATION MARK IS A STANDARD DISK, STAMPED HYDRO 1958, SET
 HV7613'IN THE TOP OF A 10-INCH SQUARE CONCRETE POST, THAT IS 1 INCH
 HV7613'BELOW THE GROUND SURFACE.  IT IS 21.0 FEET EAST OF THE WEST
 HV7613'CORNER OF A FENCE AROUND THE BUILDING, 17 FEET SOUTH OF AN
 HV7613'8-INCH TREE, 15 FEET NORTHEAST OF A FENCE AND 16 FEET SOUTHWEST
 HV7613'OF A FENCE.
 HV7613'
 HV7613'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED HYDRO NO 1 1958,
 HV7613'CEMENTED IN A DRILL HOLE AT THE SOUTHWEST END OF A SIDEWALK.  IT
 HV7613'IS 6.6 FEET SOUTHWEST OF THE CENTER OF A PEDESTRIAN GATE, 1.3
 HV7613'FEET SOUTHEAST OF THE FENCE AND ABOUT THE SAME ELEVATION AS THE
 HV7613'STATION.
 HV7613'
 HV7613'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED HYDRO NO 2 1958, SET
 HV7613'IN A DRILL HOLE IN AN ASPHALT PARKING LOT, THAT IS FLUSH WITH
 HV7613'THE SURFACE OF THE PARKING LOT.  IT IS 28.5 FEET NORTHEAST OF THE
 HV7613'FENCE, 21.0 FEET SOUTHWEST OF THE HYDROGRAPHIC BUILDING, AND ABOUT
 HV7613'THE SAME ELEVATION AS THE STATION.
 HV7613'
 HV7613'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED HYDRO 1958 NO 3
 HV7613'1970, CEMENTED IN A DRILL HOLE IN THE CONCRETE PATIO OF A PICNIC
 HV7613'AREA.  IT IS 105.5 FEET NORTHWEST OF A POWER LINE POLE, 7.3 FEET
 HV7613'NORTHWEST OF THE SOUTHEAST EDGE OF THE PATIO, AND 2.5 FEET
 HV7613'NORTHEAST OF THE SOUTHWEST EDGE OF THE PATIO.
 HV7613'
 HV7613'RM 1 TO RM 2 IS OBSTRUCTED BY THE HYDROGRAPHIC OFFICE BUILDING.
 HV7613'
 HV7613'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 HV7613'IN SUITLAND.
 HV7613
 HV7613                          STATION RECOVERY (1975)
 HV7613
 HV7613'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (PDC)
 HV7613'THE STATION MARK AND ALL REFERENCE MARKS WERE RECOVERED AS
 HV7613'DESCRIBED AND IN GOOD CONDITION.
 HV7613'
 HV7613'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--ABOUT 5 MILES
 HV7613'NORTHEAST OF OXON HILL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5016 ***********************************************************************
 JV5016  DESIGNATION -  HYDROGRAPHIC
 JV5016  PID         -  JV5016
 JV5016  STATE/COUNTY-  MD/QUEEN ANNES
 JV5016  COUNTRY     -  US
 JV5016  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5016
 JV5016                         *CURRENT SURVEY CONTROL
 JV5016  ______________________________________________________________________
 JV5016* NAD 83(1991) POSITION- 39 04 34.56715(N) 076 07 48.10192(W)   ADJUSTED
 JV5016* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5016  ______________________________________________________________________
 JV5016  GEOID HEIGHT    -        -33.605 (meters)                     GEOID18
 JV5016  LAPLACE CORR    -         -2.76  (seconds)                    DEFLEC18
 JV5016  HORZ ORDER      -  THIRD
 JV5016
 JV5016.The horizontal coordinates were established by classical geodetic methods
 JV5016.and adjusted by the National Geodetic Survey in January 1992.
 JV5016
 JV5016.The orthometric height was scaled from a topographic map.
 JV5016
 JV5016.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5016.GEOID18 height accuracy estimate available here.
 JV5016
 JV5016.Click photographs - Photos may exist for this station.
 JV5016
 JV5016.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5016
 JV5016. The following values were computed from the NAD 83(1991) position.
 JV5016
 JV5016;                    North         East     Units Scale Factor Converg.
 JV5016;SPC MD       -   156,831.569   475,277.090   MT  0.99995595   +0 32 45.7
 JV5016;SPC MD       -   514,538.24  1,559,304.92   sFT  0.99995595   +0 32 45.7
 JV5016;UTM  18      - 4,325,847.909   402,252.688   MT  0.99971765   -0 42 44.5
 JV5016
 JV5016!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5016!SPC MD       -   1.00000515  x   0.99995595  =   0.99996110
 JV5016!UTM  18      -   1.00000515  x   0.99971765  =   0.99972280
 JV5016
 JV5016:                Primary Azimuth Mark                     Grid Az
 JV5016:SPC MD       -  ENGINEER                                 007 36 29.9
 JV5016:UTM  18      -  ENGINEER                                 008 52 00.1
 JV5016
 JV5016_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0225225847(NAD 83)
 JV5016
 JV5016|---------------------------------------------------------------------|
 JV5016| PID    Reference Object                     Distance      Geod. Az  |
 JV5016|                                                           dddmmss.s |
 JV5016| JV5017 ENGINEER                            APPROX. 0.9 KM 0080915.6 |
 JV5016|---------------------------------------------------------------------|
 JV5016
 JV5016                          SUPERSEDED SURVEY CONTROL
 JV5016
 JV5016  NAD 83(1986)-  39 04 34.56154(N)    076 07 48.11398(W) AD(       ) 3
 JV5016  NAD 27      -  39 04 34.17100(N)    076 07 49.28700(W) AD(       ) 3
 JV5016  USSD        -  39 04 34.55200(N)    076 07 49.09200(W) AD(       ) 3
 JV5016
 JV5016.Superseded values are not recommended for survey control.
 JV5016
 JV5016.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5016.See file dsdata.pdf to determine how the superseded data were derived.
 JV5016
 JV5016_MARKER: H = DRILL HOLE
 JV5016_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5016_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5016+STABILITY: SURFACE MOTION
 JV5016
 JV5016  HISTORY     - Date     Condition        Report By
 JV5016  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5016  HISTORY     - 1939     MARK NOT FOUND   CGS
 JV5016
 JV5016                          STATION DESCRIPTION
 JV5016
 JV5016'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5016'STATION IS ON THE SOUTHERN SHORE OF CORSICA RIVER, ABOUT 1-1/8
 JV5016'MILES E OF CHESTER RIVER, AND 1/2 MILE E OF EARLE WHARF, NEAR EDGE
 JV5016'OF CULTIVATED FIELD, ABOUT 3 FEET ABOVE HIGH WATER, 20 YARDS S OF
 JV5016'SHORE, 4 YARDS S OF EDGE OF BANK 3 FEET HIGH, AND 400 YARDS N OF
 JV5016'LONE SYCAMORE TREE.
 JV5016'
 JV5016'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5016'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5016'2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5016'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUBSURFACE
 JV5016'MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE, BURIED WITH THE
 JV5016'TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5016'
 JV5016'DISTANCES AND BEARINGS TO POINTS OF REFERENCE ARE AS FOLLOWS--NAIL
 JV5016'IN BLAZE IN 12-INCH APPLE TREE, 16.00 METERS (52.5 FEET), S 82 DEG
 JV5016'36 MIN W.  SE CORNER OF EARLE WHARF HOUSE, 1/2 MILE, N 69 DEG 47
 JV5016'MIN W.  CHURCH STEEPLE AT CROSBY, 4-1/4 MILES, N 50 DEG 35 MIN W. E
 JV5016'GABLE OF BARN, 3-1/2 MILES, N 45 DEG 25 MIN W. S GABLE OF BARN, 3/4
 JV5016'MILE, N 31 DEG 26 MIN W. S GABLE OF EMORYS BARN, 5/8 MILE, N 08 DEG
 JV5016'40 MIN E.  SW CORNER OF EMORY WHARF HOUSE, 1/2 MILE N 11 DEG 06
 JV5016'MIN E.  W GABLE OF BARN, 3/4 MILE, N 50 DEG 13 MIN E. W GABLE OF
 JV5016'BARN, 1-5/8 MILES, N 70 DEG 59 MIN E. W CHIMNEY OF HOUSE, 1-1/4
 JV5016'MILES, N 84 DEG 18 MIN E. E CHIMNEY OF HOUSE, 3/4 MILE, S 13 DEG 15
 JV5016'MIN E.
 JV5016
 JV5016                          STATION RECOVERY (1939)
 JV5016
 JV5016'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5016'STATION SEARCHED FOR BUT NOT FOUND.  BELIEVED TO HAVE BEEN DUG OUT
 JV5016'OF CULTIVATED FIELD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0403 ***********************************************************************
 JW0403  DESIGNATION -  I
 JW0403  PID         -  JW0403
 JW0403  STATE/COUNTY-  MD/ALLEGANY
 JW0403  COUNTRY     -  US
 JW0403  USGS QUAD   -  CUMBERLAND (2016)
 JW0403
 JW0403                         *CURRENT SURVEY CONTROL
 JW0403  ______________________________________________________________________
 JW0403* NAD 83(1986) POSITION- 39 39 03.     (N) 078 45 50.     (W)   SCALED
 JW0403* NAVD 88 ORTHO HEIGHT -   190.058 (meters)      623.55  (feet) ADJUSTED
 JW0403  ______________________________________________________________________
 JW0403  GEOID HEIGHT    -        -32.715 (meters)                     GEOID18
 JW0403  DYNAMIC HEIGHT  -        189.948 (meters)      623.19  (feet) COMP
 JW0403  MODELED GRAVITY -    980,044.9   (mgal)                       NAVD 88
 JW0403
 JW0403  VERT ORDER      -  FIRST     CLASS II
 JW0403
 JW0403.The horizontal coordinates were scaled from a map and have
 JW0403.an estimated accuracy of +/- 6 seconds.
 JW0403
 JW0403.The orthometric height was determined by differential leveling and
 JW0403.adjusted by the NATIONAL GEODETIC SURVEY
 JW0403.in June 1991.
 JW0403
 JW0403.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0403.GEOID18 height accuracy estimate available here.
 JW0403
 JW0403.Click photographs - Photos may exist for this station.
 JW0403
 JW0403.The dynamic height is computed by dividing the NAVD 88
 JW0403.geopotential number by the normal gravity value computed on the
 JW0403.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0403.degrees latitude (g = 980.6199 gals.).
 JW0403
 JW0403.The modeled gravity was interpolated from observed gravity values.
 JW0403
 JW0403;                    North         East    Units  Estimated Accuracy
 JW0403;SPC MD       -   221,720.      248,610.      MT  (+/- 180 meters Scaled)
 JW0403
 JW0403_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SPD918913(NAD 83)
 JW0403
 JW0403                          SUPERSEDED SURVEY CONTROL
 JW0403
 JW0403  NGVD 29 (??/??/92)  190.252  (m)          624.19   (f) ADJ UNCH    1 2
 JW0403
 JW0403.Superseded values are not recommended for survey control.
 JW0403
 JW0403.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JW0403.See file dsdata.pdf to determine how the superseded data were derived.
 JW0403
 JW0403_MARKER: Q = CHISELED SQUARE
 JW0403_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JW0403_SP_SET: LOCK
 JW0403_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JW0403
 JW0403  HISTORY     - Date     Condition        Report By
 JW0403  HISTORY     - 1879     MONUMENTED       CGS
 JW0403  HISTORY     - 1941     GOOD             CGS
 JW0403  HISTORY     - 1983     MARK NOT FOUND   NGS
 JW0403
 JW0403                          STATION DESCRIPTION
 JW0403
 JW0403'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JW0403'AT CUMBERLAND.
 JW0403'NEW DESCRIPTION-- AT CUMBERLAND, ALONG THE WESTERN MARYLAND
 JW0403'RAILROAD, 0.1 MILE SOUTH OF THE STATION, CUT IN THE WEST CORNER
 JW0403'OF THE SOUTH LOCK AT THE WEST END, 39.6 FEET WEST OF THE WEST
 JW0403'RAIL OF THE WEST TRACK, 1.4 FEET SOUTH OF THE NORTH EDGE OF LOCK,
 JW0403'1.8 FEET EAST OF THE WEST EDGE OF LOCK, ABOUT 5 FEET BELOW TRACK
 JW0403'LEVEL.  A CHISELED SQUARE.
 JW0403
 JW0403                          STATION RECOVERY (1983)
 JW0403
 JW0403'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983
 JW0403'NOT RECOVERED, THE CANAL LOCK HAS BEEN TORN OUT, CONSIDER DESTROYED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3576 ***********************************************************************
 JU3576  DESIGNATION -  I
 JU3576  PID         -  JU3576
 JU3576  STATE/COUNTY-  MD/CECIL
 JU3576  COUNTRY     -  US
 JU3576  USGS QUAD   -  EARLEVILLE (2016)
 JU3576
 JU3576                         *CURRENT SURVEY CONTROL
 JU3576  ______________________________________________________________________
 JU3576* NAD 83(1991) POSITION- 39 28 26.46874(N) 075 58 14.16935(W)   ADJUSTED
 JU3576* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3576  ______________________________________________________________________
 JU3576  GEOID HEIGHT    -        -33.342 (meters)                     GEOID18
 JU3576  LAPLACE CORR    -         -0.86  (seconds)                    DEFLEC18
 JU3576  HORZ ORDER      -  THIRD
 JU3576
 JU3576.The horizontal coordinates were established by classical geodetic methods
 JU3576.and adjusted by the National Geodetic Survey in January 1992.
 JU3576
 JU3576.The orthometric height was scaled from a topographic map.
 JU3576
 JU3576.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3576.GEOID18 height accuracy estimate available here.
 JU3576
 JU3576.Click photographs - Photos may exist for this station.
 JU3576
 JU3576.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3576
 JU3576. The following values were computed from the NAD 83(1991) position.
 JU3576
 JU3576;                    North         East     Units Scale Factor Converg.
 JU3576;SPC MD       -   201,129.763   488,573.448   MT  1.00000429   +0 38 45.9
 JU3576;SPC MD       -   659,873.23  1,602,928.05   sFT  1.00000429   +0 38 45.9
 JU3576;UTM  18      - 4,369,830.692   416,516.711   MT  0.99968581   -0 37 01.5
 JU3576
 JU3576!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3576!SPC MD       -   1.00000527  x   1.00000429  =   1.00000956
 JU3576!UTM  18      -   1.00000527  x   0.99968581  =   0.99969108
 JU3576
 JU3576:                Primary Azimuth Mark                     Grid Az
 JU3576:SPC MD       -  H                                        040 34 41.4
 JU3576:UTM  18      -  H                                        041 50 28.8
 JU3576
 JU3576_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1651669830(NAD 83)
 JU3576
 JU3576|---------------------------------------------------------------------|
 JU3576| PID    Reference Object                     Distance      Geod. Az  |
 JU3576|                                                           dddmmss.s |
 JU3576| JU3566 H                                   APPROX. 1.0 KM 0411327.3 |
 JU3576| JU3559 ARNOLDS BAR LIGHT                   APPROX. 1.3 KM 1633900.0 |
 JU3576| CB2097 I RM 1                                9.357 METERS 27043     |
 JU3576| CB2098 I RM 2                                4.560 METERS 34348     |
 JU3576|---------------------------------------------------------------------|
 JU3576
 JU3576                          SUPERSEDED SURVEY CONTROL
 JU3576
 JU3576  NAD 83(1986)-  39 28 26.46105(N)    075 58 14.17578(W) AD(       ) 3
 JU3576  NAD 27      -  39 28 26.06400(N)    075 58 15.38500(W) AD(       ) 3
 JU3576
 JU3576.Superseded values are not recommended for survey control.
 JU3576
 JU3576.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3576.See file dsdata.pdf to determine how the superseded data were derived.
 JU3576
 JU3576_MARKER: DD = SURVEY DISK
 JU3576_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3576_STAMPING: I
 JU3576_MARK LOGO: USACE
 JU3576_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3576+STABILITY: SURFACE MOTION
 JU3576
 JU3576  HISTORY     - Date     Condition        Report By
 JU3576  HISTORY     - 1937     MONUMENTED       USACE
 JU3576  HISTORY     - 1958     MARK NOT FOUND   USGS
 JU3576
 JU3576                          STATION DESCRIPTION
 JU3576
 JU3576'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3576'LOCATED ON THE N SIDE OF ELK RIVER ON THACKERY POINT.  IT IS
 JU3576'2.0 METERS INSHORE AND ON LINE WITH THE N EDGE OF A SMALL
 JU3576'OPENING IN THE FRINGE OF TREES ALONG A 20-FOOT BLUFF BANK.  THE
 JU3576'STATION IS MARKED BY A STANDARD U.S.E.D. DISK (STAMPED NO.1)
 JU3576'SET ATOP A 6-INCH SQUARE CONCRETE POST AND PROJECTS 14 INCHES
 JU3576'ABOVE GROUND.  THE REFERENCE MARKS ARE WOODEN STAKES.
 JU3576
 JU3576                          STATION RECOVERY (1958)
 JU3576
 JU3576'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1958
 JU3576'STATION MARK BELIEVED BURIED BY CAVE-IN SINCE IT WAS
 JU3576'ESTABLISHED AT THE BASE OF A 20-FOOT BLUFF AND 6 FEET
 JU3576'INSHORE.  FOUND R.M. 2 WASHED OUT AND LYING AT HIGH WATER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0624 ***********************************************************************
 HV0624  DESIGNATION -  I2
 HV0624  PID         -  HV0624
 HV0624  STATE/COUNTY-  MD/CHARLES
 HV0624  COUNTRY     -  US
 HV0624  USGS QUAD   -  POPES CREEK (2016)
 HV0624
 HV0624                         *CURRENT SURVEY CONTROL
 HV0624  ______________________________________________________________________
 HV0624* NAD 83(1986) POSITION- 38 25 11.     (N) 076 58 28.     (W)   SCALED
 HV0624* NAVD 88 ORTHO HEIGHT -    23.941 (meters)       78.55  (feet) ADJUSTED
 HV0624  ______________________________________________________________________
 HV0624  GEOID HEIGHT    -        -33.326 (meters)                     GEOID18
 HV0624  DYNAMIC HEIGHT  -         23.926 (meters)       78.50  (feet) COMP
 HV0624  MODELED GRAVITY -    980,008.9   (mgal)                       NAVD 88
 HV0624
 HV0624  VERT ORDER      -  FIRST     CLASS II
 HV0624
 HV0624.The horizontal coordinates were scaled from a map and have
 HV0624.an estimated accuracy of +/- 6 seconds.
 HV0624
 HV0624.The orthometric height was determined by differential leveling and
 HV0624.adjusted by the NATIONAL GEODETIC SURVEY
 HV0624.in June 1991.
 HV0624
 HV0624.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0624.GEOID18 height accuracy estimate available here.
 HV0624
 HV0624.Click photographs - Photos may exist for this station.
 HV0624
 HV0624.The dynamic height is computed by dividing the NAVD 88
 HV0624.geopotential number by the normal gravity value computed on the
 HV0624.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0624.degrees latitude (g = 980.6199 gals.).
 HV0624
 HV0624.The modeled gravity was interpolated from observed gravity values.
 HV0624
 HV0624;                    North         East    Units  Estimated Accuracy
 HV0624;SPC MD       -    83,590.      402,230.      MT  (+/- 180 meters Scaled)
 HV0624
 HV0624_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH276542(NAD 83)
 HV0624
 HV0624                          SUPERSEDED SURVEY CONTROL
 HV0624
 HV0624  NGVD 29 (05/01/89)   24.196  (m)           79.38   (f) ADJUSTED    1 2
 HV0624  NGVD 29 (??/??/87)   24.225  (m)           79.48   (f) SUPERSEDED  1 2
 HV0624
 HV0624.Superseded values are not recommended for survey control.
 HV0624
 HV0624.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0624.See file dsdata.pdf to determine how the superseded data were derived.
 HV0624
 HV0624_MARKER: Q = CHISELED SQUARE
 HV0624_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0624_SP_SET: CULVERT
 HV0624_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0624
 HV0624  HISTORY     - Date     Condition        Report By
 HV0624  HISTORY     - 1917     MONUMENTED       CGS
 HV0624  HISTORY     - 1942     GOOD             CGS
 HV0624
 HV0624                          STATION DESCRIPTION
 HV0624
 HV0624'DESCRIBED BY COAST AND GEODETIC SURVEY 1917
 HV0624'1.5 MI S FROM FAULKNER.
 HV0624'1.5 MILES SOUTH ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION
 HV0624'AT FAULKNER, CHARLES COUNTY, 21 POLES SOUTH OF MILEPOST 26, AT
 HV0624'A CONCRETE CULVERT, AND ON THE SOUTHEAST CORNER OF THE WEST PARAPET.
 HV0624'AN OUTLINED SQUARE.
 HV0624
 HV0624                          STATION RECOVERY (1942)
 HV0624
 HV0624'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 HV0624'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5130 ***********************************************************************
 JV5130  DESIGNATION -  IDE
 JV5130  PID         -  JV5130
 JV5130  STATE/COUNTY-  MD/KENT
 JV5130  COUNTRY     -  US
 JV5130  USGS QUAD   -  ROCK HALL (2016)
 JV5130
 JV5130                         *CURRENT SURVEY CONTROL
 JV5130  ______________________________________________________________________
 JV5130* NAD 83(1991) POSITION- 39 08 25.37762(N) 076 08 25.83076(W)   ADJUSTED
 JV5130* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5130  ______________________________________________________________________
 JV5130  GEOID HEIGHT    -        -33.457 (meters)                     GEOID18
 JV5130  LAPLACE CORR    -         -2.14  (seconds)                    DEFLEC18
 JV5130  HORZ ORDER      -  THIRD
 JV5130
 JV5130.The horizontal coordinates were established by classical geodetic methods
 JV5130.and adjusted by the National Geodetic Survey in January 1992.
 JV5130
 JV5130.The orthometric height was scaled from a topographic map.
 JV5130
 JV5130.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5130.GEOID18 height accuracy estimate available here.
 JV5130
 JV5130.Click photographs - Photos may exist for this station.
 JV5130
 JV5130.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5130
 JV5130. The following values were computed from the NAD 83(1991) position.
 JV5130
 JV5130;                    North         East     Units Scale Factor Converg.
 JV5130;SPC MD       -   163,940.147   474,303.270   MT  0.99996048   +0 32 22.0
 JV5130;SPC MD       -   537,860.30  1,556,109.98   sFT  0.99996048   +0 32 22.0
 JV5130;UTM  18      - 4,332,974.458   401,435.476   MT  0.99971962   -0 43 11.9
 JV5130
 JV5130!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5130!SPC MD       -   1.00000513  x   0.99996048  =   0.99996561
 JV5130!UTM  18      -   1.00000513  x   0.99971962  =   0.99972475
 JV5130
 JV5130:                Primary Azimuth Mark                     Grid Az
 JV5130:SPC MD       -  HOO                                      196 49 15.9
 JV5130:UTM  18      -  HOO                                      198 04 49.8
 JV5130
 JV5130_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0143532974(NAD 83)
 JV5130
 JV5130|---------------------------------------------------------------------|
 JV5130| PID    Reference Object                     Distance      Geod. Az  |
 JV5130|                                                           dddmmss.s |
 JV5130| JV5129 HOO                                 403.389 METERS 1972137.9 |
 JV5130| JV5120 WOLL                                483.441 METERS 2484318.9 |
 JV5130| JV5128 PHILIP                              APPROX. 0.5 KM 3261358.9 |
 JV5130|---------------------------------------------------------------------|
 JV5130
 JV5130                          SUPERSEDED SURVEY CONTROL
 JV5130
 JV5130  NAD 83(1986)-  39 08 25.37193(N)    076 08 25.84218(W) AD(       ) 3
 JV5130  NAD 27      -  39 08 24.98100(N)    076 08 27.02200(W) AD(       ) 3
 JV5130  USSD        -  39 08 25.38700(N)    076 08 26.83700(W) AD(       ) 3
 JV5130
 JV5130.Superseded values are not recommended for survey control.
 JV5130
 JV5130.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5130.See file dsdata.pdf to determine how the superseded data were derived.
 JV5130
 JV5130_MARKER: H = DRILL HOLE
 JV5130_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5130_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5130+STABILITY: SURFACE MOTION
 JV5130
 JV5130  HISTORY     - Date     Condition        Report By
 JV5130  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5130  HISTORY     - 1939     GOOD             CGS
 JV5130  HISTORY     - 1961     SEE DESCRIPTION  CGS
 JV5130
 JV5130                          STATION DESCRIPTION
 JV5130
 JV5130'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5130'STATION IS ON THE EASTERN SHORE OF EAST FORK OF LANGFORD CREEK,
 JV5130'AT S SIDE OF ENTRANCE TO PHILIPS CREEK, AND ABOUT 2 MILES NE OF
 JV5130'MAIN BODY OF LANGFORD CREEK, ABOUT 2 FEET ABOVE HIGH WATER, 17
 JV5130'YARDS E OF SHORE, 15 YARDS SE OF CUT IN SHORE, AND 18 YARDS NE
 JV5130'OF ANOTHER CUT IN SHORE.
 JV5130'
 JV5130'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5130'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5130'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5130'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5130'POST.  SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5130'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5130'
 JV5130'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5130'FOLLOWS--E PEAK OF LARGE BARN, 5/8 MILE, S 3 DEG 48 MIN W.  NE PEAK
 JV5130'OF HOUSE, 1-5/8 MILES, S 36 DEG 51 MIN W.  CHIMNEY OF HOUSE, 3/8 MILE,
 JV5130'S 67 DEG 06 MIN W.S PEAK OF BARN, 3/4 MILE, N 14 DEG 19 MIN W. CHIMNEY
 JV5130'OF TRUES HOUSE, 3/8 MILE, S 49 DEG 17 MIN E.
 JV5130
 JV5130                          STATION RECOVERY (1939)
 JV5130
 JV5130'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5130'STATION RECOVERED IN GOOD CONDITION.
 JV5130'
 JV5130'STATION IS ON THE EASTERN SHORE OF THE EAST FORK OF LANGFORD
 JV5130'CREEK, 150 METERS S OF THE S SHORE OF THE ENTRANCE TO PHILIPS
 JV5130'CREEK, AND ABOUT 2 MILES N OF LANGFORD BAY.
 JV5130'
 JV5130'STATION IS A STANDARD CEMENT MONUMENT OF THE MARYLAND SHELL FISH
 JV5130'SURVEY, PROJECTS 3 INCHES ABOVE THE SURFACE OF THE GROUND, IS
 JV5130'ALONG THE NORTHERN EDGE OF A CLUMP OF BRUSH BETWEEN A GROUP OF
 JV5130'TREES AND THE HIGH-WATER LINE, APPROXIMATELY 5 METERS N OF A
 JV5130'SMALL INTERMITTENT STREAM, 15 METERS ENE OF A DUCK BLIND, 10
 JV5130'METERS E OF HIGH-WATER LINE, AND 2 METERS S OF THE EDGE OF
 JV5130'CULTIVATION.
 JV5130'
 JV5130'TO REACH THE STATION FROM THE SQUARE, CENTER OF CHESTERTOWN,
 JV5130'FOLLOW ROAD TO QUAKER NECK FOR 6.1 MILES, TURN RIGHT INTO FARM,
 JV5130'DRIVE FOR 0.2 MILE TO HOUSE.  STATION IS 600 METERS NW OF THE
 JV5130'HOUSE.
 JV5130'
 JV5130'STATION WAS NOT OCCUPIED.
 JV5130
 JV5130                          STATION RECOVERY (1961)
 JV5130
 JV5130'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5130'STATION NOT RECOVERED AFTER A THOROUGH SEARCH.  ALL OF THE WITNESS
 JV5130'TREES HAVE BEEN DESTROYED.  MARK HAS PROBABLY BEEN DESTROYED BY
 JV5130'EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2405 ***********************************************************************
 JV2405  DESIGNATION -  IJAM
 JV2405  PID         -  JV2405
 JV2405  STATE/COUNTY-  MD/FREDERICK
 JV2405  COUNTRY     -  US
 JV2405  USGS QUAD   -  WALKERSVILLE (2016)
 JV2405
 JV2405                         *CURRENT SURVEY CONTROL
 JV2405  ______________________________________________________________________
 JV2405* NAD 83(1991) POSITION- 39 23 09.64967(N) 077 17 59.69517(W)   ADJUSTED
 JV2405* NAVD 88 ORTHO HEIGHT -   174.636 (meters)      572.95  (feet) ADJUSTED
 JV2405  ______________________________________________________________________
 JV2405  GEOID HEIGHT    -        -32.343 (meters)                     GEOID18
 JV2405  LAPLACE CORR    -          5.93  (seconds)                    DEFLEC18
 JV2405  DYNAMIC HEIGHT  -        174.543 (meters)      572.65  (feet) COMP
 JV2405  MODELED GRAVITY -    980,094.6   (mgal)                       NAVD 88
 JV2405
 JV2405  HORZ ORDER      -  SECOND
 JV2405  VERT ORDER      -  SECOND    CLASS 0
 JV2405
 JV2405.The horizontal coordinates were established by classical geodetic methods
 JV2405.and adjusted by the National Geodetic Survey in January 1992.
 JV2405
 JV2405.The orthometric height was determined by differential leveling and
 JV2405.adjusted by the NATIONAL GEODETIC SURVEY
 JV2405.in June 1991.
 JV2405
 JV2405.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2405.GEOID18 height accuracy estimate available here.
 JV2405
 JV2405.Click photographs - Photos may exist for this station.
 JV2405
 JV2405.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2405
 JV2405.The dynamic height is computed by dividing the NAVD 88
 JV2405.geopotential number by the normal gravity value computed on the
 JV2405.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2405.degrees latitude (g = 980.6199 gals.).
 JV2405
 JV2405.The modeled gravity was interpolated from observed gravity values.
 JV2405
 JV2405. The following values were computed from the NAD 83(1991) position.
 JV2405
 JV2405;                    North         East     Units Scale Factor Converg.
 JV2405;SPC MD       -   190,902.170   374,161.492   MT  0.99998943   -0 11 17.7
 JV2405;SPC MD       -   626,318.20  1,227,561.50   sFT  0.99998943   -0 11 17.7
 JV2405;UTM  18      - 4,362,137.758   301,922.470   MT  1.00008309   -1 27 35.5
 JV2405
 JV2405!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2405!SPC MD       -   0.99997768  x   0.99998943  =   0.99996711
 JV2405!UTM  18      -   0.99997768  x   1.00008309  =   1.00006076
 JV2405
 JV2405:                Primary Azimuth Mark                     Grid Az
 JV2405:SPC MD       -  DENNIS                                   286 25 58.1
 JV2405:UTM  18      -  DENNIS                                   287 42 15.9
 JV2405
 JV2405_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0192262137(NAD 83)
 JV2405
 JV2405|---------------------------------------------------------------------|
 JV2405| PID    Reference Object                     Distance      Geod. Az  |
 JV2405|                                                           dddmmss.s |
 JV2405| JV2406 IJAM RM 1                            11.772 METERS 14320     |
 JV2405| JV2404 IJAM RM 2                            10.495 METERS 24139     |
 JV2405| JV2402 DENNIS                              APPROX. 2.0 KM 2861440.4 |
 JV2405|---------------------------------------------------------------------|
 JV2405
 JV2405                          SUPERSEDED SURVEY CONTROL
 JV2405
 JV2405  NAD 83(1986)-  39 23 09.64954(N)    077 17 59.70476(W) AD(       ) 2
 JV2405  NAD 27      -  39 23 09.28060(N)    077 18 00.76550(W) AD(       ) 2
 JV2405  NGVD 29             174.85   (m)          573.7    (f) LEVELING    3  
 JV2405  NGVD 29 (11/26/84)  174.848  (m)          573.65   (f) ADJUSTED    2 0
 JV2405
 JV2405.Superseded values are not recommended for survey control.
 JV2405
 JV2405.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2405.See file dsdata.pdf to determine how the superseded data were derived.
 JV2405
 JV2405_MARKER: DS = TRIANGULATION STATION DISK
 JV2405_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2405_STAMPING: IJAM 1958
 JV2405_MARK LOGO: CGS
 JV2405_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2405+STABILITY: SURFACE MOTION
 JV2405
 JV2405  HISTORY     - Date     Condition        Report By
 JV2405  HISTORY     - 1958     MONUMENTED       CGS
 JV2405  HISTORY     - 1958     GOOD             CGS
 JV2405
 JV2405                          STATION DESCRIPTION
 JV2405
 JV2405'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2405'STATION IS ON THE CUT BANK ON THE SOUTH SIDE OF U.S. HIGHWAY NO. 40,
 JV2405'ABOUT 7 MILES SOUTHEAST OF THE CENTER OF FREDERICK, AND ABOUT 1.5
 JV2405'MILES WEST OF NEW MARKET.  IT IS 61 FEET SOUTH SOUTH-WEST OF EAST
 JV2405'BOUND TRAFFIC LANE, 30-1/2 FEET NORTH NORTH-EAST OF BLAZED
 JV2405'TREE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED, IJAM 1958.
 JV2405'
 JV2405'REFERENCE MARK NO. 1 IS 85-1/2 FEET SOUTH SOUTH-WEST OF THE
 JV2405'CENTERLINE OF EAST BOUND TRAFFIC LANE OF U.S. HIGHWAY NO. 40, 2
 JV2405'FEET WEST NORTH-WEST OF WHITE WITNESS POST, 34-1/2 FEET EAST OF
 JV2405'A BLAZED TREE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED,
 JV2405'IJAM RM NO 1 1958.
 JV2405'
 JV2405'REFERENCE MARK NO. 2 IS 5 FEET NORTH OF RIGHT OF WAY POST, 22
 JV2405'FEET NORTHWEST OF A BLAZED TREE, 83-1/2 FEET SOUTH SOUTH-WEST
 JV2405'OF CENTERLINE OF EAST BOUND TRAFFIC LANE OF U.S. HIGHWAY NO. 40,
 JV2405'THE MARK IS SET FLUSH AND THE DISK IS STAMPED, IJAM RM NO 2 1958.
 JV2405'
 JV2405'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE HIGHWAY
 JV2405'NO. 75, JUST SOUTH OF NEW MARKET.  GO WESTERLY ON U.S. HIGHWAY
 JV2405'NO. 40 FOR 1.6 MILE TO CROSSROAD (MUSSETTER ROAD).  CONTINUE
 JV2405'WESTERLY ON U.S. HIGHWAY NO. 40 FOR 0.10 MILE TO STATION ON LEFT
 JV2405'A TOP OF EMBANKMENT AS DESCRIBED.
 JV2405'
 JV2405'TRAVERSE STATION DENNIS MAY BE USED AS AN AZIMUTH MARK.
 JV2405'
 JV2405'HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.
 JV2405
 JV2405                          STATION RECOVERY (1958)
 JV2405
 JV2405'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2405'6.1 MI E FROM FREDERICK.
 JV2405'ABOUT 6.1 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2405'AT FREDERICK, ON THE TOP OF A CUT BANK, NEAR THE NORTH EDGE OF A
 JV2405'WOODED AREA, 0.1 MILE WEST OF THE CROSSING OF THE MUSSETTER ROAD,
 JV2405'61 FEET SOUTH OF THE CENTER LINE OF THE EAST BOUND LANE, 30
 JV2405'FEET EAST-NORTHEAST OF A 18-INCH OAK TREE WITH A TRIANGULAR
 JV2405'BLAZE, SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND
 JV2405'AND ABOUT 15 FEET ABOVE THE LEVEL OF THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2406 ***********************************************************************
 JV2406  DESIGNATION -  IJAM RM 1
 JV2406  PID         -  JV2406
 JV2406  STATE/COUNTY-  MD/FREDERICK
 JV2406  COUNTRY     -  US
 JV2406  USGS QUAD   -  WALKERSVILLE (2016)
 JV2406
 JV2406                         *CURRENT SURVEY CONTROL
 JV2406  ______________________________________________________________________
 JV2406* NAD 83(1986) POSITION- 39 23 09.34   (N) 077 17 59.40   (W)   HD_HELD1
 JV2406* NAVD 88 ORTHO HEIGHT -   174.145 (meters)      571.34  (feet) ADJUSTED
 JV2406  ______________________________________________________________________
 JV2406  GEOID HEIGHT    -        -32.342 (meters)                     GEOID18
 JV2406  DYNAMIC HEIGHT  -        174.053 (meters)      571.04  (feet) COMP
 JV2406  MODELED GRAVITY -    980,094.6   (mgal)                       NAVD 88
 JV2406
 JV2406  VERT ORDER      -  SECOND    CLASS 0
 JV2406
 JV2406.The horizontal coordinates were determined by differentially corrected
 JV2406.hand held GPS observations or other comparable positioning techniques
 JV2406.and have an estimated accuracy of +/- 3 meters.
 JV2406
 JV2406.The orthometric height was determined by differential leveling and
 JV2406.adjusted by the NATIONAL GEODETIC SURVEY
 JV2406.in June 1991.
 JV2406
 JV2406.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2406.GEOID18 height accuracy estimate available here.
 JV2406
 JV2406.Click photographs - Photos may exist for this station.
 JV2406
 JV2406.The dynamic height is computed by dividing the NAVD 88
 JV2406.geopotential number by the normal gravity value computed on the
 JV2406.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2406.degrees latitude (g = 980.6199 gals.).
 JV2406
 JV2406.The modeled gravity was interpolated from observed gravity values.
 JV2406
 JV2406;                    North         East    Units  Estimated Accuracy
 JV2406;SPC MD       -   190,892.6     374,168.5     MT  (+/- 3 meters HH1 GPS) 
 JV2406
 JV2406_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0192962128(NAD 83)
 JV2406
 JV2406                          SUPERSEDED SURVEY CONTROL
 JV2406
 JV2406  NGVD 29 (11/26/84)  174.358  (m)          572.04   (f) ADJUSTED    2 0
 JV2406
 JV2406.Superseded values are not recommended for survey control.
 JV2406
 JV2406.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2406.See file dsdata.pdf to determine how the superseded data were derived.
 JV2406
 JV2406_MARKER: DR = REFERENCE MARK DISK
 JV2406_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2406_STAMPING: IJAM NO 1 1958
 JV2406_MARK LOGO: CGS
 JV2406_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2406+STABILITY: SURFACE MOTION
 JV2406
 JV2406  HISTORY     - Date     Condition        Report By
 JV2406  HISTORY     - 1958     MONUMENTED       CGS
 JV2406
 JV2406                          STATION DESCRIPTION
 JV2406
 JV2406'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2406'6.1 MI E FROM FREDERICK.
 JV2406'ABOUT 6.1 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2406'AT FREDERICK, ON THE TOP OF A CUT, 38.6 FEET SOUTHEAST OF THE
 JV2406'STATION, 2 FEET WEST OF A WHITE WOODEN WITNESS POST, SET IN THE
 JV2406'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2404 ***********************************************************************
 JV2404  DESIGNATION -  IJAM RM 2
 JV2404  PID         -  JV2404
 JV2404  STATE/COUNTY-  MD/FREDERICK
 JV2404  COUNTRY     -  US
 JV2404  USGS QUAD   -  WALKERSVILLE (2016)
 JV2404
 JV2404                         *CURRENT SURVEY CONTROL
 JV2404  ______________________________________________________________________
 JV2404* NAD 83(1986) POSITION- 39 23 09.49   (N) 077 18 00.08   (W)   HD_HELD1
 JV2404* NAVD 88 ORTHO HEIGHT -   174.005 (meters)      570.88  (feet) ADJUSTED
 JV2404  ______________________________________________________________________
 JV2404  GEOID HEIGHT    -        -32.343 (meters)                     GEOID18
 JV2404  DYNAMIC HEIGHT  -        173.913 (meters)      570.58  (feet) COMP
 JV2404  MODELED GRAVITY -    980,094.6   (mgal)                       NAVD 88
 JV2404
 JV2404  VERT ORDER      -  SECOND    CLASS 0
 JV2404
 JV2404.The horizontal coordinates were determined by differentially corrected
 JV2404.hand held GPS observations or other comparable positioning techniques
 JV2404.and have an estimated accuracy of +/- 3 meters.
 JV2404
 JV2404.The orthometric height was determined by differential leveling and
 JV2404.adjusted by the NATIONAL GEODETIC SURVEY
 JV2404.in June 1991.
 JV2404
 JV2404.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2404.GEOID18 height accuracy estimate available here.
 JV2404
 JV2404.Click photographs - Photos may exist for this station.
 JV2404
 JV2404.The dynamic height is computed by dividing the NAVD 88
 JV2404.geopotential number by the normal gravity value computed on the
 JV2404.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2404.degrees latitude (g = 980.6199 gals.).
 JV2404
 JV2404.The modeled gravity was interpolated from observed gravity values.
 JV2404
 JV2404;                    North         East    Units  Estimated Accuracy
 JV2404;SPC MD       -   190,897.3     374,152.3     MT  (+/- 3 meters HH1 GPS) 
 JV2404
 JV2404_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0191362133(NAD 83)
 JV2404
 JV2404                          SUPERSEDED SURVEY CONTROL
 JV2404
 JV2404  NGVD 29 (11/26/84)  174.217  (m)          571.58   (f) ADJUSTED    2 0
 JV2404
 JV2404.Superseded values are not recommended for survey control.
 JV2404
 JV2404.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2404.See file dsdata.pdf to determine how the superseded data were derived.
 JV2404
 JV2404_MARKER: DR = REFERENCE MARK DISK
 JV2404_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2404_STAMPING: IJAM NO 2 1958
 JV2404_MARK LOGO: CGS
 JV2404_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2404+STABILITY: SURFACE MOTION
 JV2404
 JV2404  HISTORY     - Date     Condition        Report By
 JV2404  HISTORY     - 1958     MONUMENTED       CGS
 JV2404
 JV2404                          STATION DESCRIPTION
 JV2404
 JV2404'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2404'6.1 MI E FROM FREDERICK.
 JV2404'ABOUT 6.1 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE POST OFFICE
 JV2404'AT FREDERICK, ON THE TOP OF A CUT BANK, 34.4 FEET SOUTHWEST OF
 JV2404'THE STATION, 5 FEET NORTH OF A RIGHT-OF-WAY MARKER, SET IN THE
 JV2404'TOP OF A CONCRETE POST FLUSH WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7299 ***********************************************************************
 HV7299  DESIGNATION -  ILL
 HV7299  PID         -  HV7299
 HV7299  STATE/COUNTY-  MD/CALVERT
 HV7299  COUNTRY     -  US
 HV7299  USGS QUAD   -  NORTH BEACH (2016)
 HV7299
 HV7299                         *CURRENT SURVEY CONTROL
 HV7299  ______________________________________________________________________
 HV7299* NAD 83(1991) POSITION- 38 39 17.35867(N) 076 31 38.49650(W)   ADJUSTED
 HV7299* NAVD 88 ORTHO HEIGHT -    31.    (meters)      102.    (feet) SCALED
 HV7299  ______________________________________________________________________
 HV7299  GEOID HEIGHT    -        -33.776 (meters)                     GEOID18
 HV7299  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV7299  HORZ ORDER      -  THIRD
 HV7299
 HV7299.The horizontal coordinates were established by classical geodetic methods
 HV7299.and adjusted by the National Geodetic Survey in January 1992.
 HV7299
 HV7299.The orthometric height was scaled from a topographic map.
 HV7299
 HV7299.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7299.GEOID18 height accuracy estimate available here.
 HV7299
 HV7299.Click photographs - Photos may exist for this station.
 HV7299
 HV7299.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7299
 HV7299. The following values were computed from the NAD 83(1991) position.
 HV7299
 HV7299;                    North         East     Units Scale Factor Converg.
 HV7299;SPC MD       -   109,795.574   441,139.334   MT  0.99995725   +0 17 47.9
 HV7299;SPC MD       -   360,220.98  1,447,304.63   sFT  0.99995725   +0 17 47.9
 HV7299;UTM  18      - 4,279,579.536   367,099.520   MT  0.99981751   -0 57 15.0
 HV7299
 HV7299!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7299!SPC MD       -   1.00000047  x   0.99995725  =   0.99995772
 HV7299!UTM  18      -   1.00000047  x   0.99981751  =   0.99981798
 HV7299
 HV7299:                Primary Azimuth Mark                     Grid Az
 HV7299:SPC MD       -  THOMAS PT SHOAL LH                       016 01 03.6
 HV7299:UTM  18      -  THOMAS PT SHOAL LH                       017 16 06.5
 HV7299
 HV7299_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6709979579(NAD 83)
 HV7299
 HV7299|---------------------------------------------------------------------|
 HV7299| PID    Reference Object                     Distance      Geod. Az  |
 HV7299|                                                           dddmmss.s |
 HV7299| HV6305 THOMAS PT SHOAL LH                  APPROX.28.2 KM 0161851.5 |
 HV7299|---------------------------------------------------------------------|
 HV7299
 HV7299                          SUPERSEDED SURVEY CONTROL
 HV7299
 HV7299  NAD 83(1986)-  38 39 17.35681(N)    076 31 38.50977(W) AD(       ) 3
 HV7299  NAD 27      -  38 39 16.93000(N)    076 31 39.66500(W) AD(       ) 3
 HV7299  USSD        -  38 39 17.30100(N)    076 31 39.46700(W) AD(       ) 3
 HV7299
 HV7299.Superseded values are not recommended for survey control.
 HV7299
 HV7299.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7299.See file dsdata.pdf to determine how the superseded data were derived.
 HV7299
 HV7299
 HV7299  HISTORY     - Date     Condition        Report By
 HV7299  HISTORY     - 1898     MONUMENTED       CGS
 HV7299  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7299
 HV7299                          STATION DESCRIPTION
 HV7299
 HV7299'DESCRIBED BY COAST AND GEODETIC SURVEY 1898
 HV7299'ON THE W SHORE OF CHESAPEAKE BAY, ABOUT 2 MILES N OF PLUM POINT,
 HV7299'ON THE HIGHEST POINT OF A VERY HIGH BLUFF.  GOING ALONG THE SHORE
 HV7299'TO THE N THE LAND RISES VERY STEEPLY, AND THE STATION IS JUST AT
 HV7299'THE TOP OF THE HILL.  THE FISHERMEN LAND THEIR BOATS AT THE FOOT
 HV7299'OF THE HILL ON THE NARROW BEACH.  THE STATION IS INSIDE THE WIRE
 HV7299'FENCE RUNNING ALONG THE EDGE OF THE BLUFF AND 15 FEET DISTANT FROM
 HV7299'THE FENCE.  THE LAND IS USED FOR PASTURE.  NO RECORD OF STATION MARKS.
 HV7299
 HV7299                          STATION RECOVERY (1960)
 HV7299
 HV7299'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7299'STATION SEARCHED FOR BUT COULD NOT BE FOUND.  IT IS POSSIBLE IT
 HV7299'WAS DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7262 ***********************************************************************
 HV7262  DESIGNATION -  ILL 2 1907
 HV7262  PID         -  HV7262
 HV7262  STATE/COUNTY-  MD/CALVERT
 HV7262  COUNTRY     -  US
 HV7262  USGS QUAD   -  NORTH BEACH (2016)
 HV7262
 HV7262                         *CURRENT SURVEY CONTROL
 HV7262  ______________________________________________________________________
 HV7262* NAD 83(1991) POSITION- 38 39 17.34106(N) 076 31 38.20546(W)   ADJUSTED
 HV7262* NAVD 88 ORTHO HEIGHT -    31.    (meters)      102.    (feet) SCALED
 HV7262  ______________________________________________________________________
 HV7262  GEOID HEIGHT    -        -33.776 (meters)                     GEOID18
 HV7262  LAPLACE CORR    -         -5.49  (seconds)                    DEFLEC18
 HV7262  HORZ ORDER      -  THIRD
 HV7262
 HV7262.The horizontal coordinates were established by classical geodetic methods
 HV7262.and adjusted by the National Geodetic Survey in January 1992.
 HV7262
 HV7262.The orthometric height was scaled from a topographic map.
 HV7262
 HV7262.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7262.GEOID18 height accuracy estimate available here.
 HV7262
 HV7262.Click photographs - Photos may exist for this station.
 HV7262
 HV7262.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7262
 HV7262. The following values were computed from the NAD 83(1991) position.
 HV7262
 HV7262;                    North         East     Units Scale Factor Converg.
 HV7262;SPC MD       -   109,795.068   441,146.374   MT  0.99995725   +0 17 48.1
 HV7262;SPC MD       -   360,219.32  1,447,327.73   sFT  0.99995725   +0 17 48.1
 HV7262;UTM  18      - 4,279,578.876   367,106.546   MT  0.99981748   -0 57 14.8
 HV7262
 HV7262!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7262!SPC MD       -   1.00000047  x   0.99995725  =   0.99995772
 HV7262!UTM  18      -   1.00000047  x   0.99981748  =   0.99981795
 HV7262
 HV7262:                Primary Azimuth Mark                     Grid Az
 HV7262:SPC MD       -  HOLLAND 3                                358 51 43.9
 HV7262:UTM  18      -  HOLLAND 3                                000 06 46.8
 HV7262
 HV7262_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6710679578(NAD 83)
 HV7262
 HV7262|---------------------------------------------------------------------|
 HV7262| PID    Reference Object                     Distance      Geod. Az  |
 HV7262|                                                           dddmmss.s |
 HV7262| HV7287 HOLLAND 3                           APPROX. 6.3 KM 3590932.0 |
 HV7262|---------------------------------------------------------------------|
 HV7262
 HV7262                          SUPERSEDED SURVEY CONTROL
 HV7262
 HV7262  NAD 83(1986)-  38 39 17.33923(N)    076 31 38.21882(W) AD(       ) 3
 HV7262  NAD 27      -  38 39 16.89600(N)    076 31 39.34100(W) AD(       ) 3
 HV7262  USSD        -  38 39 17.28200(N)    076 31 39.17000(W) AD(       ) 3
 HV7262
 HV7262.Superseded values are not recommended for survey control.
 HV7262
 HV7262.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7262.See file dsdata.pdf to determine how the superseded data were derived.
 HV7262
 HV7262_MARKER: N = NAIL
 HV7262_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV7262_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7262
 HV7262  HISTORY     - Date     Condition        Report By
 HV7262  HISTORY     - 1907     MONUMENTED       CGS
 HV7262  HISTORY     - 1930     MARK NOT FOUND   CGS
 HV7262  HISTORY     - 1944     MARK NOT FOUND   CGS
 HV7262  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7262
 HV7262                          STATION DESCRIPTION
 HV7262
 HV7262'DESCRIBED BY COAST AND GEODETIC SURVEY 1907 (CMS)
 HV7262'ON THE WESTERN SHORE OF CHESAPEAKE BAY, ABOUT 2-1/4 MILES S OF
 HV7262'CHESAPEAKE BEACH, AND 2-3/4 MILES N OF PLUM POINT, IN A CULTIVATED
 HV7262'FIELD, ON THE HIGHEST POINT OF A BLUFF WHICH RISES ABRUPTLY FROM
 HV7262'THE S.  AT THE FOOT OF THE BLUFF IS A LANDING FOR SMALL BOATS,
 HV7262'SOMETIMES USED AS A LUMBER-SHIPPING POINT.  STATION IS ABOUT 12
 HV7262'FEET W OF EDGE OF BLUFF, 100 YARDS S OF A FENCE AND TREES RUNNING
 HV7262'E AND W, AND 7 FEET W OF WIRE FENCE ALONG EDGE OF CLIFF.
 HV7262'
 HV7262'STATION MARKED UNDERGROUND BY TWO HEXAGONAL DRAIN TILES PLACED ONE
 HV7262'ABOVE THE OTHER, THE TOP OF THE UPPER TILE BEING 3 FEET BELOW
 HV7262'SURFACE OF GROUND.  A NAIL IN TOP MARKS THE CENTER, AND THE
 HV7262'LETTERS U.S.C. AND G.S. 1907 ARE ROUGHLY MARKED IN THE CEMENT.
 HV7262'REFERENCE OF 1907 MARK IS SIMILAR TO THE STATION MARK EXCEPT THAT
 HV7262'ONLY ONE TILE WAS USED FOR SUB-SURFACE MARK, AND THE SURFACE MARK
 HV7262'IS 6 INCHES BELOW THE GROUND, CEMENT COVERING IT TO THE SURFACE.
 HV7262'IT IS 16.80 METERS (55.1 FEET) FROM STATION N 82 DEG 39 MIN W.
 HV7262'
 HV7262'REFERENCE MARK OF 1908 IS MARKED BY A HOLE IN THE CENTER OF THE
 HV7262'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD CEMENT MONUMENT AN
 HV7262'8-INCH SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT
 HV7262'4 INCHES. THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 HV7262'TOP OF POST.  IT IS 23.83M. (78.2 FEET) FROM STATION S 80 DEG 43
 HV7262'MIN W. DISTANCES AND BEARINGS FROM THE STATION TO OTHER POINTS OF
 HV7262'REFERENCE ARE AS FOLLOWS--NEW GABLE OF UNPAINTED BAR, 3/4 MILE, S
 HV7262'22 DEG 19 MIN W.  LEFT CHIMNEY OF FOUR-GABLED HOUSE, 1 MIL S 34
 HV7262'DEG 06 MIN W.  N GABLE OF SMALL BARN, 1/2 MILE, S 44 DEG 45 MIN W
 HV7262'CENTER CHIMNEY OF WHITE HOUSE, 3/4 MILE, S 58 DEG 03 MIN W. E
 HV7262'GABLE OF UNPAINTED BARN, 3/8 MILE, S 81 DEG 40 MIN W.  CHIMNEY ON
 HV7262'OUTSIDE OF OLD HOUSE, 1 MILE, S 87 DEG 11 MIN W.  S GABLE OF
 HV7262'HOUSE AT NORTH BEACH, 2-1/2 MILES, N 2 DEG 01 MIN W.  TANGENT OF
 HV7262'LAND TO S, 1-1/4 MILES S 19 DEG 51 MIN E.
 HV7262
 HV7262                          STATION RECOVERY (1930)
 HV7262
 HV7262'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1930 (LBT)
 HV7262'STATION LOST BY EROSION OF BLUFF.  REFERENCE MARK AND M.S.F.S.
 HV7262'MARK RECOVERED.
 HV7262
 HV7262                          STATION RECOVERY (1944)
 HV7262
 HV7262'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944 (LPR)
 HV7262'STATION LOST.  CLIFF HAS ERODED AWAY AND PRESENT EDGE OF CLIFF
 HV7262'ONLY ABOUT 20 METERS E OF REFERENCE MARK (1908).  GRADING
 HV7262'OPERATIONS IN THE VICINITY HAVE LOWERED LEVEL ABOUT 3 FEET AND
 HV7262'REFERENCE MARK (1908) WAS PRESERVED BY LEAVING A SMALL MOUND.  AS
 HV7262'THIS MARK NOW PROJECTS ABOUT 6 INCHES AND IS LEANING OVER IT WAS
 HV7262'PROBABLY DISTURBED.  FURTHER GRADING WILL REMOVE THIS REFERENCE
 HV7262'MARK ALSO.  AS IT APPEARED TO HAVE BEEN DISTURBED IT WOULD NOT BE
 HV7262'ADVISABLE TO RESET THIS MARK WITHOUT FURTHER TRIANGULATION
 HV7262'OBSERVATIONS.
 HV7262
 HV7262                          STATION RECOVERY (1960)
 HV7262
 HV7262'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7262'STATION SEARCHED FOR BUT COULD NOT BE FOUND.  IT IS POSSIBLE IT
 HV7262'WAS DESTROYED BY EROSION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6546 ***********************************************************************
 HV6546  DESIGNATION -  IN MSFC 1908
 HV6546  PID         -  HV6546
 HV6546  STATE/COUNTY-  MD/ST MARYS
 HV6546  COUNTRY     -  US
 HV6546  USGS QUAD   -  SAINT GEORGE ISLAND (2016)
 HV6546
 HV6546                         *CURRENT SURVEY CONTROL
 HV6546  ______________________________________________________________________
 HV6546* NAD 83(1993) POSITION- 38 07 02.48994(N) 076 24 18.42079(W)   ADJUSTED
 HV6546* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV6546  ______________________________________________________________________
 HV6546  GEOID HEIGHT    -        -34.953 (meters)                     GEOID18
 HV6546  LAPLACE CORR    -         -6.04  (seconds)                    DEFLEC18
 HV6546  HORZ ORDER      -  THIRD
 HV6546
 HV6546.The horizontal coordinates were established by classical geodetic methods
 HV6546.and adjusted by the National Geodetic Survey in November 1994.
 HV6546
 HV6546.The orthometric height was scaled from a topographic map.
 HV6546
 HV6546.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6546.GEOID18 height accuracy estimate available here.
 HV6546
 HV6546.Click photographs - Photos may exist for this station.
 HV6546
 HV6546.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6546
 HV6546. The following values were computed from the NAD 83(1993) position.
 HV6546
 HV6546;                    North         East     Units Scale Factor Converg.
 HV6546;SPC MD       -    50,199.172   452,168.221   MT  1.00003679   +0 22 24.1
 HV6546;SPC MD       -   164,695.12  1,483,488.57   sFT  1.00003679   +0 22 24.1
 HV6546;SPC VA N     - 2,052,121.689 3,683,686.655   MT  0.99998623   +1 18 26.8
 HV6546;SPC VA N     - 6,732,669.24 12,085,561.97   sFT  0.99998623   +1 18 26.8
 HV6546;SPC VA S     - 1,200,030.476 3,683,695.740   MT  1.00003098   +1 16 17.2
 HV6546;SPC VA S     - 3,937,099.99 12,085,591.77   sFT  1.00003098   +1 16 17.2
 HV6546;UTM  18      - 4,219,768.690   376,828.382   MT  0.99978685   -0 52 02.8
 HV6546
 HV6546!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6546!SPC MD       -   1.00000522  x   1.00003679  =   1.00004201
 HV6546!SPC VA N     -   1.00000522  x   0.99998623  =   0.99999145
 HV6546!SPC VA S     -   1.00000522  x   1.00003098  =   1.00003620
 HV6546!UTM  18      -   1.00000522  x   0.99978685  =   0.99979207
 HV6546
 HV6546:                Primary Azimuth Mark                     Grid Az
 HV6546:SPC MD       -  DRUM MSFC 1908                           076 46 42.2
 HV6546:SPC VA N     -  DRUM MSFC 1908                           075 50 39.5
 HV6546:SPC VA S     -  DRUM MSFC 1908                           075 52 49.1
 HV6546:UTM  18      -  DRUM MSFC 1908                           078 01 09.1
 HV6546
 HV6546_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7682819768(NAD 83)
 HV6546
 HV6546|---------------------------------------------------------------------|
 HV6546| PID    Reference Object                     Distance      Geod. Az  |
 HV6546|                                                           dddmmss.s |
 HV6546| HV6545 DRUM MSFC 1908                      464.440 METERS 0770906.3 |
 HV6546| HV6560 PIER MSFC                           358.917 METERS 11648     |
 HV6546| HV6547 OAK                                 477.439 METERS 2685121.7 |
 HV6546|---------------------------------------------------------------------|
 HV6546
 HV6546                          SUPERSEDED SURVEY CONTROL
 HV6546
 HV6546  NAD 83(1991)-  38 07 02.48887(N)    076 24 18.42365(W) AD(       ) 3
 HV6546  NAD 83(1986)-  38 07 02.49020(N)    076 24 18.43750(W) AD(       ) 3
 HV6546  NAD 27      -  38 07 02.06800(N)    076 24 19.63800(W) AD(       ) 3
 HV6546  USSD        -  38 07 02.44600(N)    076 24 19.35000(W) AD(       ) 3
 HV6546
 HV6546.Superseded values are not recommended for survey control.
 HV6546
 HV6546.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6546.See file dsdata.pdf to determine how the superseded data were derived.
 HV6546
 HV6546_MARKER: Z = SEE DESCRIPTION
 HV6546_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 HV6546_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV6546+STABILITY: SURFACE MOTION
 HV6546
 HV6546  HISTORY     - Date     Condition        Report By
 HV6546  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6546  HISTORY     - 1942     MARK NOT FOUND   CGS
 HV6546  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV6546
 HV6546                          STATION DESCRIPTION
 HV6546
 HV6546'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (OWF)
 HV6546'ON THE NORTHERN SHORE OF SMITH CREEK, ON POINT BETWEEN TWO MAIN
 HV6546'BRANCHES OF CREEK, AND ABOUT 1/4 MILE NW OF MILLERS WHARF.  STATION
 HV6546'IS ON GRASS POINT WHICH IS SURROUNDED BY SMALL BOULDERS AND
 HV6546'COBBLESTONES VISIBLE AT LOW WATER, IS ABOUT 2 FEET ABOVE HIGH
 HV6546'WATER, 2 YARDS E OF SIDE OF POINT, 3 YARDS NW OF SIDE OF POINT, 10
 HV6546'YARDS NNE OF EXTREME END OF POINT, AND NEAR THREE TREES.
 HV6546'STATION MARKED BY 2-INCH SQUARE STICK IN CENTER OF 4-INCH TILE
 HV6546'PIPE FILLED WITH AND SET IN CEMENT, WITH TOP ABOUT FLUSH WITH
 HV6546'SURFACE OF GROUND.  REFERENCE MARK IS CENTER OF
 HV6546'STANDARD CEMENT MONUMENT OF MARYLAND SHELL FISH SURVEY, WHICH
 HV6546'IS MADE OF CONCRETE AND IS 2 FEET LONG AND 8 INCHES SQUARE AT THE
 HV6546'TOP AND BOTTOM.  ITS TOP IS MARKED WITH THE SAME MOLD AND SHOWS A
 HV6546'CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HV6546'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND
 HV6546'THE LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE TRIANGLE.  THE
 HV6546'CENTER HOLE IS AT THE CENTER OF THE MONUMENT, AND IF THE
 HV6546'MARKING HAS BEEN BROKEN OFF WITHOUT DISTURBING THE BOTTOM, THE
 HV6546'CENTER OF THE SQUARE SECTION MAY BE USED AS THE LOCATION OF THE
 HV6546'REFERENCE MARK.  THE MONUMENT IS SET VERTICALLY IN THE GROUND, WITH
 HV6546'TOP PROJECTING ABOUT 3 TO 5 INCHES ABOVE THE SURFACE.  IT IS 9.32
 HV6546'METERS (30.58 FEET) FROM STATION N 07 DEG 09 MIN E.
 HV6546'DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV6546'REFERENCE ARE AS FOLLOWS--RIGHT PEAK OF ROOF OF OLD HOTEL, 5/8
 HV6546'MILE, S 3 DEG 10 MIN W.  LEFT TANGENT OF POINT OF LAND, 7/8 MILE, S 30
 HV6546'DEG 19 MIN W.  RIGHT CHIMNEY OF LARGE HOUSE, 1/2 MILE, S 65 DEG 55
 HV6546'MIN W.  NAIL IN BLAZE IN 7-INCH CEDAR TREE, 2.03 METERS (6.66
 HV6546'FEET), N 17 DEG 43 MIN W.  NAIL IN BLAZE IN 14-INCH CEDAR TREE, 5.33
 HV6546'METERS (17.49 FEET), N 25 DEG 54 MIN E.  NAIL IN BLAZE IN 20-INCH
 HV6546'CEDAR TREE, 11.24 METERS (36.9 FEET), N 34 DEG 49 MIN E.
 HV6546'24-INCH CEDAR TREE, 40 YARDS, N 63 DEG 58 MIN E.  RIGHT PEAK OF DUNBAR
 HV6546'HOUSE, 5/8 MILE, N 77 DEG 16 MIN E.  FRONT PEAK OF LARGE HOUSE, 1/2
 HV6546'MILE, S 89 DEG 23 MIN E.  NEAR PEAK OF ROOF OF HOUSE, 7/8
 HV6546'MILE, S 17 DEG 58 MIN E.
 HV6546
 HV6546                          STATION RECOVERY (1942)
 HV6546
 HV6546'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (WDP)
 HV6546'THIS STATION AND ITS REFERENCE MARK WERE THOROUGHLY SEARCHED FOR BY
 HV6546'TWO MEN FOR 1-1/2 HOURS, BUT NO TRACE OF THIS STATION COULD BE
 HV6546'FOUND.  ALL OF THE CEDAR TREES HAVE BEEN DESTROYED.  IT IS
 HV6546'RECOMMENDED THAT THIS STATION BE CLASSIFIED AS LOST.
 HV6546
 HV6546                          STATION RECOVERY (1958)
 HV6546
 HV6546'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6546'A THOROUGH SEARCH OF THE VICINITY WAS MADE, BUT SINCE NONE OF THE
 HV6546'VARIOUS REFERENCES COULD BE RECOGNIZED AND THE POINT APPEARS TO HAVE
 HV6546'BEEN ERODING RAPIDLY, THE STATION WAS NOT RECOVERED AND SHOULD BE
 HV6546'CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DN6233 ***********************************************************************
 DN6233  HT_MOD      -  This is a Height Modernization Survey Station.
 DN6233  DESIGNATION -  INDEPENDENCE
 DN6233  PID         -  DN6233
 DN6233  STATE/COUNTY-  MD/CECIL
 DN6233  COUNTRY     -  US
 DN6233  USGS QUAD   -  ELKTON (2016)
 DN6233
 DN6233                         *CURRENT SURVEY CONTROL
 DN6233  ______________________________________________________________________
 DN6233* NAD 83(2011) POSITION- 39 36 58.43071(N) 075 48 04.09591(W)   ADJUSTED
 DN6233* NAD 83(2011) ELLIP HT-    21.174 (meters)        (06/27/12)   ADJUSTED
 DN6233* NAD 83(2011) EPOCH   -  2010.00
 DN6233* NAVD 88 ORTHO HEIGHT -    54.27  (meters)      178.1   (feet) GPS OBS
 DN6233  ______________________________________________________________________
 DN6233  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DN6233  GEOID HEIGHT    -        -33.083 (meters)                     GEOID03
 DN6233  GEOID HEIGHT    -        -33.103 (meters)                     GEOID18
 DN6233  NAD 83(2011) X  -  1,206,818.542 (meters)                     COMP
 DN6233  NAD 83(2011) Y  - -4,769,698.713 (meters)                     COMP
 DN6233  NAD 83(2011) Z  -  4,045,266.236 (meters)                     COMP
 DN6233  LAPLACE CORR    -          1.81  (seconds)                    DEFLEC18
 DN6233
 DN6233  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DN6233  Standards:
 DN6233         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DN6233            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DN6233  -------------------------------------------------------------------
 DN6233  NETWORK    0.60   1.18           0.28   0.19   0.60     -0.02069563
 DN6233  -------------------------------------------------------------------
 DN6233  Click here for local accuracies and other accuracy information.
 DN6233
 DN6233.The horizontal coordinates were established by GPS observations
 DN6233.and adjusted by the National Geodetic Survey in June 2012.
 DN6233
 DN6233.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DN6233.been affixed to the stable North American tectonic plate. See 
 DN6233.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DN6233
 DN6233.The horizontal coordinates are valid at the epoch date displayed above
 DN6233.which is a decimal equivalence of Year/Month/Day.
 DN6233
 DN6233.The orthometric height was determined by GPS observations and a
 DN6233.high-resolution geoid model using precise GPS observation and
 DN6233.processing techniques.
 DN6233
 DN6233.Significant digits in the geoid height do not necessarily reflect accuracy.
 DN6233.GEOID18 height accuracy estimate available here.
 DN6233
 DN6233.Click photographs - Photos may exist for this station.
 DN6233
 DN6233.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DN6233
 DN6233.The Laplace correction was computed from DEFLEC18 derived deflections.
 DN6233
 DN6233.The ellipsoidal height was determined by GPS observations
 DN6233.and is referenced to NAD 83.
 DN6233
 DN6233. The following values were computed from the NAD 83(2011) position.
 DN6233
 DN6233;                    North         East     Units Scale Factor Converg.
 DN6233;SPC MD       -   217,095.826   502,946.747   MT  1.00003331   +0 45 08.8
 DN6233;SPC MD       -   712,255.22  1,650,084.45   sFT  1.00003331   +0 45 08.8
 DN6233;UTM  18      - 4,385,470.566   431,233.411   MT  0.99965822   -0 30 39.1
 DN6233
 DN6233!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DN6233!SPC MD       -   0.99999668  x   1.00003331  =   1.00002999
 DN6233!UTM  18      -   0.99999668  x   0.99965822  =   0.99965490
 DN6233
 DN6233_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ3123385470(NAD 83)
 DN6233
 DN6233                          SUPERSEDED SURVEY CONTROL
 DN6233
 DN6233  NAD 83(2007)-  39 36 58.43091(N)    075 48 04.09640(W) AD(2002.00) 1
 DN6233  ELLIP H (02/23/12)   21.207  (m)                       GP(2002.00) 4 1
 DN6233
 DN6233.Superseded values are not recommended for survey control.
 DN6233
 DN6233.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DN6233.See file dsdata.pdf to determine how the superseded data were derived.
 DN6233
 DN6233_MARKER: DD = SURVEY DISK
 DN6233_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DN6233_STAMPING: INDEPENDENCE 2008
 DN6233_MARK LOGO: MD-015
 DN6233_PROJECTION: FLUSH
 DN6233_MAGNETIC: B = BAR MAGNET IMBEDDED IN MONUMENT
 DN6233_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DN6233+STABILITY: SURFACE MOTION
 DN6233_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DN6233+SATELLITE: SATELLITE OBSERVATIONS - December 04, 2008
 DN6233
 DN6233  HISTORY     - Date     Condition        Report By
 DN6233  HISTORY     - 20081204 MONUMENTED       GWS
 DN6233
 DN6233                          STATION DESCRIPTION
 DN6233
 DN6233'DESCRIBED BY GW STEPHENS JR AND ASSOCIATES 2008 (JMS)
 DN6233'THE STATION IS LOCATED ON THE SOUTH SIDE OF RED HILL ROAD ABOUT 1.20
 DN6233'MI (1.9 KM) NORTHEAST OF ELKTON AND 0.80 MI (1.3 KM) WEST OF THE
 DN6233'MARYLAND-DELAWARE LINE.
 DN6233'
 DN6233'TO REACH FROM THE JUNCTION OF MD 213 AND MD 281, GO EAST-NORTHEAST ON
 DN6233'MD 281 FOR 1.95 MI (3.1 KM) TO A SIDE ROAD ON THE RIGHT.  TURN RIGHT
 DN6233'AND GO SOUTH-SOUTHEAST ON CHERRY TREE LANE FOR 0.04 MI (0.1 KM) TO AN
 DN6233'INTERSECTION.  TURN RIGHT AND GO WEST-SOUTHWEST ON INDEPENDENCE DR FOR
 DN6233'0.12 MI (0.2 KM) TO THE INTERSECTION OF LIBERTY LANE AND THE STATION
 DN6233'ON THE RIGHT.
 DN6233'
 DN6233'IT IS 0.7 FT (21 CM) NORTHWEST OF THE BACK OF THE NORTHWEST CURB OF
 DN6233'INDEPENDENCE DRIVE, 15.2 FT (4.6 M) SOUTHWEST OF THE CENTERLINE OF THE
 DN6233'DRIVEWAY TO 112 INDEPENDENCE DRIVE AND 61 FT (18.6 M) NORTH-NORTHEAST
 DN6233'OF A LIGHT POLE IN THE SOUTH ANGLE OF THE INTERSECTION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5004 ***********************************************************************
 HV5004  DESIGNATION -  INDIAN
 HV5004  PID         -  HV5004
 HV5004  STATE/COUNTY-  MD/CHARLES
 HV5004  COUNTRY     -  US
 HV5004  USGS QUAD   -  INDIAN HEAD (2016)
 HV5004
 HV5004                         *CURRENT SURVEY CONTROL
 HV5004  ______________________________________________________________________
 HV5004* NAD 83(1993) POSITION- 38 36 23.99767(N) 077 10 00.95229(W)   ADJUSTED
 HV5004* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HV5004  ______________________________________________________________________
 HV5004  GEOID HEIGHT    -        -32.506 (meters)                     GEOID18
 HV5004  LAPLACE CORR    -         -1.96  (seconds)                    DEFLEC18
 HV5004  HORZ ORDER      -  THIRD
 HV5004
 HV5004.The horizontal coordinates were established by classical geodetic methods
 HV5004.and adjusted by the National Geodetic Survey in November 1994.
 HV5004
 HV5004.The orthometric height was scaled from a topographic map.
 HV5004
 HV5004.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5004.GEOID18 height accuracy estimate available here.
 HV5004
 HV5004.Click photographs - Photos may exist for this station.
 HV5004
 HV5004.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5004
 HV5004. The following values were computed from the NAD 83(1993) position.
 HV5004
 HV5004;                    North         East     Units Scale Factor Converg.
 HV5004;SPC MD       -   104,356.885   385,460.209   MT  0.99996082   -0 06 17.2
 HV5004;SPC MD       -   342,377.55  1,264,630.70   sFT  0.99996082   -0 06 17.2
 HV5004;SPC VA N     - 2,105,181.476 3,616,105.511   MT  0.99994840   +0 49 55.2
 HV5004;SPC VA N     - 6,906,749.56 11,863,839.50   sFT  0.99994840   +0 49 55.2
 HV5004;UTM  18      - 4,275,356.284   311,317.135   MT  1.00003843   -1 21 09.0
 HV5004
 HV5004!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5004!SPC MD       -   1.00000483  x   0.99996082  =   0.99996565
 HV5004!SPC VA N     -   1.00000483  x   0.99994840  =   0.99995323
 HV5004!UTM  18      -   1.00000483  x   1.00003843  =   1.00004326
 HV5004
 HV5004:                Primary Azimuth Mark                     Grid Az
 HV5004:SPC MD       -  KNIGHT 2                                 303 05 43.5
 HV5004:SPC VA N     -  KNIGHT 2                                 302 09 31.1
 HV5004:UTM  18      -  KNIGHT 2                                 304 20 35.3
 HV5004
 HV5004_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1131775356(NAD 83)
 HV5004
 HV5004|---------------------------------------------------------------------|
 HV5004| PID    Reference Object                     Distance      Geod. Az  |
 HV5004|                                                           dddmmss.s |
 HV5004| DC6024 INDIAN RM 1                          18.220 METERS 08424     |
 HV5004| DC6025 INDIAN RM 2                          36.460 METERS 17123     |
 HV5004| HV4996 KNIGHT 2                            APPROX. 2.6 KM 3025926.3 |
 HV5004|---------------------------------------------------------------------|
 HV5004
 HV5004                          SUPERSEDED SURVEY CONTROL
 HV5004
 HV5004  NAD 83(1991)-  38 36 23.99498(N)    077 10 00.95670(W) AD(       ) 3
 HV5004  NAD 83(1986)-  38 36 23.99729(N)    077 10 00.96407(W) AD(       ) 3
 HV5004  NAD 27      -  38 36 23.57400(N)    077 10 02.04300(W) AD(       ) 3
 HV5004
 HV5004.Superseded values are not recommended for survey control.
 HV5004
 HV5004.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5004.See file dsdata.pdf to determine how the superseded data were derived.
 HV5004
 HV5004_MARKER: DS = TRIANGULATION STATION DISK
 HV5004_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV5004_STAMPING: INDIAN 1928
 HV5004_MARK LOGO: CGS
 HV5004_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV5004+STABILITY: SURFACE MOTION
 HV5004
 HV5004  HISTORY     - Date     Condition        Report By
 HV5004  HISTORY     - 1928     MONUMENTED       CGS
 HV5004  HISTORY     - 1928     SEE DESCRIPTION  CGS
 HV5004  HISTORY     - 1938     MARK NOT FOUND   CGS
 HV5004  HISTORY     - 1958     MARK NOT FOUND   CGS
 HV5004
 HV5004                          STATION DESCRIPTION
 HV5004
 HV5004'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV5004'STATION IS ON THE E SHORE OF THE POTOMAC RIVER AT INDIAN HEAD DOCK,
 HV5004'THE UPPER (N) DOCK OF THE NAVAL PROVING GROUNDS, ON THE FILLED
 HV5004'LAND BETWEEN THE RAILROAD TRACKS AND THE DOCK WALL.  2 METERS E
 HV5004'OF THE MOST WESTERLY WALL, FLUSH WITH THE SURFACE OF THE GROUND
 HV5004'AND STAMPED INDIAN 1928.
 HV5004'
 HV5004'STATION MARK AND REFERENCE MARK NO.2 ARE STANDARD BRONZE DISKS
 HV5004'SET IN CONCRETE.
 HV5004'
 HV5004'REFERENCE MARK NO. 1 IS A STANDARD DISK REFERENCE MARK SET IN
 HV5004'DRILL HOLE IN THE BREAKWATER WALL N OF STATION, WITH ARROW
 HV5004'POINTING TO STATION AND STAMPED INDIAN NO.1 1928.
 HV5004'
 HV5004'REFERENCE MARK NO. 2 IS LOCATED ACROSS THE RAILROAD TRACKS AMONG
 HV5004'THE TREES S OF STATION AND STAMPED INDIAN NO.2 1928.
 HV5004'
 HV5004'AT PRESENT AN OLD WOODEN DOCK RUNNING N AND S FORMS A BASIN WITH
 HV5004'BREAKWATER WALL FOR SMALL BOATS TO TIE UP IN.  THIS DOCK IS USED
 HV5004'AS A SUPPLY BASE, THE DOCK 3/4 MILE S BEING THE MOST IMPORTANT
 HV5004'AT THE PROVING GROUNDS.
 HV5004'
 HV5004'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV5004
 HV5004                          STATION RECOVERY (1928)
 HV5004
 HV5004'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1928 (PCD)
 HV5004'STATION IS IN FILLED-IN GROUND INSIDE THE RETAINING WALL AT
 HV5004'INDIAN HEAD.  REFERENCE MARK SET IN WALL AND ACROSS TRACK.  STATION
 HV5004'WAS NOT OCCUPIED.
 HV5004
 HV5004                          STATION RECOVERY (1938)
 HV5004
 HV5004'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV5004'STATION MARK LOST DUE TO CAVING OF THE FILL IN WHICH THE STATION
 HV5004'WAS SET BEHIND THE RETAINING WALL.  REFERENCE MARK NO.2 WAS NOT
 HV5004'FOUND AFTER BRIEF SEARCH AND IS BELIEVED IRRECOVERABLE BECAUSE
 HV5004'OF LARGE AMOUNT OF FILL THROWN UP FOR THE CONSTRUCTION OF A NEW
 HV5004'ROAD AT THIS PLACE.  REFERENCE MARK NO.1 WAS RECOVERED.
 HV5004
 HV5004                          STATION RECOVERY (1958)
 HV5004
 HV5004'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV5004'THE STATION AND REFERENCE MARK NO. 2 ARE LOST AS REPORTED BY
 HV5004'T.M.P. JR., IN 1938.  REFERENCE MARK NO. 1 WAS RECOVERED IN GOOD
 HV5004'CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2073 ***********************************************************************
 HU2073  DESIGNATION -  INDIAN
 HU2073  PID         -  HU2073
 HU2073  STATE/COUNTY-  MD/DORCHESTER
 HU2073  COUNTRY     -  US
 HU2073  USGS QUAD   -  EAST NEW MARKET (2016)
 HU2073
 HU2073                         *CURRENT SURVEY CONTROL
 HU2073  ______________________________________________________________________
 HU2073* NAD 83(1991) POSITION- 38 35 02.17873(N) 075 58 52.62421(W)   ADJUSTED
 HU2073* NAVD 88 ORTHO HEIGHT -     3.05  (+/-2cm)       10.0   (feet) VERTCON3
 HU2073  ______________________________________________________________________
 HU2073  GEOID HEIGHT    -        -35.169 (meters)                     GEOID18
 HU2073  LAPLACE CORR    -         -2.81  (seconds)                    DEFLEC18
 HU2073  HORZ ORDER      -  SECOND
 HU2073  VERT ORDER      -  THIRD (See Below)
 HU2073
 HU2073.The horizontal coordinates were established by classical geodetic methods
 HU2073.and adjusted by the National Geodetic Survey in January 1992.
 HU2073
 HU2073.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2073.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2073
 HU2073.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2073.GEOID18 height accuracy estimate available here.
 HU2073
 HU2073.The vertical order pertains to the NGVD 29 superseded value.
 HU2073
 HU2073.Click photographs - Photos may exist for this station.
 HU2073
 HU2073.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2073
 HU2073. The following values were computed from the NAD 83(1991) position.
 HU2073
 HU2073;                    North         East     Units Scale Factor Converg.
 HU2073;SPC MD       -   102,315.999   488,756.996   MT  0.99996275   +0 38 21.8
 HU2073;SPC MD       -   335,681.74  1,603,530.24   sFT  0.99996275   +0 38 21.8
 HU2073;UTM  18      - 4,271,063.917   414,532.534   MT  0.99968995   -0 36 43.3
 HU2073
 HU2073!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2073!SPC MD       -   1.00000504  x   0.99996275  =   0.99996779
 HU2073!UTM  18      -   1.00000504  x   0.99968995  =   0.99969499
 HU2073
 HU2073:                Primary Azimuth Mark                     Grid Az
 HU2073:SPC MD       -  INDIAN RM 3 AZIMUTH                      262 13 18.4
 HU2073:UTM  18      -  INDIAN RM 3 AZIMUTH                      263 28 23.5
 HU2073
 HU2073_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1453271063(NAD 83)
 HU2073
 HU2073|---------------------------------------------------------------------|
 HU2073| PID    Reference Object                     Distance      Geod. Az  |
 HU2073|                                                           dddmmss.s |
 HU2073| HU2092 PRESTON WATER TANK                  APPROX.15.6 KM 0233222.6 |
 HU2073| HU2063 EAST NEW MARKET WATER TANK          APPROX. 5.0 KM 0704258.4 |
 HU2073| DM4890 INDIAN RM 1                          30.431 METERS 13344     |
 HU2073| DC7418 INDIAN RM 2                          55.169 METERS 23315     |
 HU2073| HV5882 CAMBRIDGE HOSPITAL STACK            APPROX. 6.5 KM 2484858.0 |
 HU2073| HV5870 CAMBRIDGE STANDPIPE                 APPROX. 8.7 KM 2594409.4 |
 HU2073| HV5877 CAMBRIDGE MFG CO TANK               APPROX. 7.9 KM 2595657.8 |
 HU2073| DC7419 INDIAN RM 3 AZIMUTH                                2625140.2 |
 HU2073| HV5845 TRAPPE WATER TANK                   APPROX.10.7 KM 3204842.8 |
 HU2073|---------------------------------------------------------------------|
 HU2073
 HU2073                          SUPERSEDED SURVEY CONTROL
 HU2073
 HU2073  NAD 83(1986)-  38 35 02.17518(N)    075 58 52.64178(W) AD(       ) 2
 HU2073  NAD 27      -  38 35 01.75100(N)    075 58 53.85900(W) AD(       ) 2
 HU2073  NGVD 29               3.28   (m)           10.8    (f) LEVELING    3  
 HU2073
 HU2073.Superseded values are not recommended for survey control.
 HU2073
 HU2073.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2073.See file dsdata.pdf to determine how the superseded data were derived.
 HU2073
 HU2073_MARKER: DS = TRIANGULATION STATION DISK
 HU2073_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2073_STAMPING: INDIAN 1934
 HU2073_MARK LOGO: CGS
 HU2073_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2073_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2073+STABILITY: SURFACE MOTION
 HU2073
 HU2073  HISTORY     - Date     Condition        Report By
 HU2073  HISTORY     - 1934     MONUMENTED       CGS
 HU2073  HISTORY     - 1942     GOOD             CGS
 HU2073  HISTORY     - 1961     GOOD             CGS
 HU2073  HISTORY     - 1986     GOOD             NGS
 HU2073
 HU2073                          STATION DESCRIPTION
 HU2073
 HU2073'DESCRIBED BY COAST AND GEODETIC SURVEY 1934 (JB)
 HU2073'THIS SECOND-ORDER STATION IS LOCATED ON THE S BANK OF THE
 HU2073'CHOPTANK RIVER, ON A VACANT LOT, AT THE E SECTION OF BEACH
 HU2073'HAVEN, W OF THE MOUTH OF INDIAN CREEK, 61 FEET SSW OF A BLUFF
 HU2073'OF THE RIVER, 52.6 FEET WSW OF THE NW CORNER OF THE BACK PORCH
 HU2073'OF DR. R.W. MILLIKINS HOME, AND 31.8 FEET N OF AN 8-INCH PINE
 HU2073'TREE.  THE MARK PROJECTS 6 INCHES ABOVE GROUND AND IS STAMPED
 HU2073'INDIAN 1934.
 HU2073'
 HU2073'SURFACE, UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE
 HU2073'DISKS SET IN CONCRETE.
 HU2073'
 HU2073'REFERENCE MARK NO.1 IS 12.8 FEET S OF THE SW CORNER OF A
 HU2073'CHICKEN HOUSE, 3.8 FEET WSW OF A FENCE LINE, AND 1.5 FEET NW OF
 HU2073'A 6-INCH PERSIMMON TREE.  THE MARK PROJECTS 6 INCHES ABOVE
 HU2073'GROUND AND IS STAMPED INDIAN NO.1 1934.
 HU2073'
 HU2073'REFERENCE MARK NO.2 IS 143.2 FEET NE OF THE NE CORNER OF THE
 HU2073'SUMMER HOME OF J.T. PRICE AND 63 FEET SE OF THE EDGE OF A
 HU2073'BLUFF.  THE MARK PROJECTS 6 INCHES ABOVE GROUND AND IS STAMPED
 HU2073'INDIAN NO.2 1934.
 HU2073'
 HU2073'REFERENCE MARK NO.3 (AZIMUTH MARK) IS LOCATED AT CEDAR GROVE,
 HU2073'ABOUT 8 PACES E OF AN 8-INCH POPLAR TREE, ABOUT 5 PACES N OF
 HU2073'THE NE CORNER OF A BATHHOUSE, AND 4 PACES S OF THE RIVER
 HU2073'BANK.  THE MARK PROJECTS 3 INCHES ABOVE GROUND AND IS STAMPED
 HU2073'INDIAN NO.3 1934.  TO REACH THE AZIMUTH MARK FROM THE STATION
 HU2073'GO S ON THE BEACH HAVEN ROAD TO STATE HIGHWAY 16, TURN RIGHT
 HU2073'ON HIGHWAY 16 TO A SIGN CEDAR GROVE BEACH, TURN RIGHT ON A DIRT
 HU2073'ROAD TO THE BEACH AND THE MARK.
 HU2073'
 HU2073'TO REACH THE STATION FROM CAMBRIDGE FROM CORNER OF RACE AND
 HU2073'MUIR STREETS AT GRACE CHURCH GO S ON RACE STREET FOR ABOUT 0.3
 HU2073'MILE, TURN LEFT ON MARYLAND STATE HIGHWAY 16 FOR 6.3 MILES TO
 HU2073'A SIGN ON THE N SIDE OF THE HIGHWAY BEACH HAVEN ROAD, AND MILEAGE
 HU2073'MARKER 77, TURN LEFT N ON THE BEACH HAVEN ROAD FOR ABOUT
 HU2073'0.6 MILE TO A Y-ROAD, TURN RIGHT AND GO 0.3 MILE TO THE END OF
 HU2073'THE ROAD, TURN LEFT FOR ABOUT 100 YARDS TOWARD THE WATERS EDGE
 HU2073'TO THE STATION.
 HU2073
 HU2073                          STATION RECOVERY (1942)
 HU2073
 HU2073'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU2073'THE STATION AND ALL MARKS RECOVERED AS DESCRIBED AND IN GOOD
 HU2073'CONDITION.  SINCE THIS STATION WAS ESTABLISHED A HOUSE HAS BEEN
 HU2073'BUILT CLOSE TO IT AND A GARAGE HAS BEEN BUILT BETWEEN THE
 HU2073'STATION MARK AND REFERENCE MARK NO.1 MAKING IT IMPOSSIBLE TO
 HU2073'MEASURE BETWEEN THE STATION AND THE REFERENCE MARK.  A NEW
 HU2073'STATION HAS BEEN ESTABLISHED, STAMPED INDIAN 2 1942.  A NEW
 HU2073'DESCRIPTION OF INDIAN 1934 FOLLOWS--
 HU2073'
 HU2073'STATION IS ABOUT 6 MILES E OF CAMBRIDGE ON THE S SHORE OF THE
 HU2073'CHOPTANK RIVER, AT THE E SECTION OF BEACH HAVEN, AND JUST W OF
 HU2073'THE MOUTH OF INDIAN CREEK ON PROPERTY OWNED BY J.A.
 HU2073'BRANCHAUD.  IT IS 61 FEET SW OF BLUFF OF RIVER, 22 FEET NE OF
 HU2073'THE NE CORNER OF J.A. BRANCHAUDS HOUSE, AND 10 FEET NE OF WELL,
 HU2073'STAMPED INDIAN 1934, AND PROJECTS 3 INCHES.
 HU2073'
 HU2073'REFERENCE MARK NO.1 IS AT THE SE CORNER OF THE GARAGE.  IT IS
 HU2073'4 FEET SW OF THE FENCE LINE AND 2 FEET S OF THE SE CORNER OF
 HU2073'GARAGE, IS STAMPED INDIAN 1934 NO.1, AND PROJECTS 4
 HU2073'INCHES.
 HU2073'
 HU2073'REFERENCE MARK NO.2 IS IN A FENCE LINE, 143 FEET NE OF THE NE
 HU2073'CORNER OF J.T. PRICES HOUSE, 63 FEET SE OF THE EDGE OF BLUFF,
 HU2073'IS STAMPED INDIAN 1934 NO.2, AND PROJECTS 3 INCHES.
 HU2073'
 HU2073'REFERENCE MARK NO.3 (AZIMUTH MARK) IS WSW OF THE STATION,
 HU2073'LOCATED AT CEDAR GROVE, 8 PACES E OF 14-INCH POPLAR TREE, 5
 HU2073'PACES N OF THE NE CORNER OF A BATHHOUSE, AND 4 PACES S OF THE
 HU2073'RIVER BANK.  IT IS STAMPED INDIAN NO.3 1934, AND PROJECTS 3
 HU2073'INCHES.  TO REACH THE AZIMUTH MARK FROM THE STATION GO S ON
 HU2073'BEACH HAVEN ROAD FOR 0.75 MILE TO STATE HIGHWAY 16, TURN RIGHT
 HU2073'ON STATE HIGHWAY 16 AND GO 0.3 MILE TO THE CEDAR GROVE ROAD.
 HU2073'TURN RIGHT AND GO 1.2 MILES TO THE PARKING LOT AT CEDAR GROVE
 HU2073'BEACH, HERE LEAVE TRUCK AND PROCEED ON FOOT EASTWARD ABOUT 100
 HU2073'YARDS TO MARK.
 HU2073'
 HU2073'TO REACH THE STATION FROM THE CORNER OF RACE AND WASHINGTON
 HU2073'STREETS IN CAMBRIDGE (JUNCTION OF HIGHWAYS 213 AND 16) GO
 HU2073'EASTWARD ON STATE HIGHWAY 16 FOR 6.1 MILES TO BEACH HAVEN ROAD
 HU2073'ON LEFT, TURN LEFT AND GO 0.80 MILE TO MR. BRANCHAUDS RESIDENCE
 HU2073'ON LEFT AND STATION.
 HU2073
 HU2073                          STATION RECOVERY (1961)
 HU2073
 HU2073'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HU2073'STATION MARK AND REFERENCE MARK NO. 2 WERE RECOVERED IN GOOD
 HU2073'CONDITION.  REFERENCE MARK NO. 1 HAS BEEN DESTROYED BY
 HU2073'EROSION.  REFERENCE MARK NO. 3 (AZ. MK.) WAS NOT RECOVERED
 HU2073'AFTER A THOROUGH SEARCH.
 HU2073'
 HU2073'THE PUBLISHED DESCRIPTION IS ADEQUATE WITH THE EXCEPTION THAT
 HU2073'THE PROPERTY IS NOW OWNED BY MR. ARMSTRONG.
 HU2073
 HU2073                          STATION RECOVERY (1986)
 HU2073
 HU2073'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HU2073'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES BELOW--
 HU2073'THE STATION, REFERENCE MARK 1, AND REFERENCE MARK 2 WERE RECOVERED
 HU2073'AND FOUND IN GOOD CONDITION.  REFERENCE MARK 3 WAS FOUND DESTROYED
 HU2073'AND THE DISK WAS SALVAGED AT THIS DATE.
 HU2073'THIS STATION WAS NOT OCCUPIED AT THIS DATE, HOWEVER, IT
 HU2073'WAS INTERSECTED FROM STATION INDIAN 2 1942. THE REFERENCE MARKS ARE
 HU2073'NO LONGER VISIBLE FROM THIS STATION, THEY ARE OBSTRUCTED BY NEWLY
 HU2073'CONSTRUCTED HOUSES AND SHADE TREES.  FOR ADDITIONAL INFORMATION SEE
 HU2073'THE DESCRIPTION FOR STATION INDIAN 2 1942.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7565 ***********************************************************************
 HV7565  DESIGNATION -  INDIAN
 HV7565  PID         -  HV7565
 HV7565  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7565  COUNTRY     -  US
 HV7565  USGS QUAD   -  ANACOSTIA (2016)
 HV7565
 HV7565                         *CURRENT SURVEY CONTROL
 HV7565  ______________________________________________________________________
 HV7565* NAD 83(1993) POSITION- 38 48 23.36651(N) 076 59 54.67144(W)   ADJUSTED
 HV7565* NAVD 88 ORTHO HEIGHT -    56.    (meters)      184.    (feet) SCALED
 HV7565  ______________________________________________________________________
 HV7565  GEOID HEIGHT    -        -32.291 (meters)                     GEOID18
 HV7565  LAPLACE CORR    -         -2.94  (seconds)                    DEFLEC18
 HV7565  HORZ ORDER      -  SECOND
 HV7565
 HV7565.The horizontal coordinates were established by classical geodetic methods
 HV7565.and adjusted by the National Geodetic Survey in November 1994.
 HV7565
 HV7565.The orthometric height was scaled from a topographic map.
 HV7565
 HV7565.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7565.GEOID18 height accuracy estimate available here.
 HV7565
 HV7565.Click photographs - Photos may exist for this station.
 HV7565
 HV7565.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7565
 HV7565. The following values were computed from the NAD 83(1993) position.
 HV7565
 HV7565;                    North         East     Units Scale Factor Converg.
 HV7565;SPC MD       -   126,525.103   400,128.563   MT  0.99995058   +0 00 03.3
 HV7565;SPC MD       -   415,107.78  1,312,755.13   sFT  0.99995058   +0 00 03.3
 HV7565;UTM  18      - 4,297,200.109   326,466.646   MT  0.99997083   -1 15 10.0
 HV7565
 HV7565!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7565!SPC MD       -   0.99999632  x   0.99995058  =   0.99994690
 HV7565!UTM  18      -   0.99999632  x   0.99997083  =   0.99996715
 HV7565
 HV7565:                Primary Azimuth Mark                     Grid Az
 HV7565:SPC MD       -  OXON                                     183 07 32.6
 HV7565:UTM  18      -  OXON                                     184 22 45.9
 HV7565
 HV7565_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2646697200(NAD 83)
 HV7565
 HV7565|---------------------------------------------------------------------|
 HV7565| PID    Reference Object                     Distance      Geod. Az  |
 HV7565|                                                           dddmmss.s |
 HV7565| HV1025 OXON                                APPROX. 0.6 KM 1830735.9 |
 HV7565| HV7563 INDIAN 2                             48.605 METERS 24912     |
 HV7565|---------------------------------------------------------------------|
 HV7565
 HV7565                          SUPERSEDED SURVEY CONTROL
 HV7565
 HV7565  NAD 83(1991)-  38 48 23.36500(N)    076 59 54.67280(W) AD(       ) 2
 HV7565  NAD 83(1986)-  38 48 23.36483(N)    076 59 54.68473(W) AD(       ) 2
 HV7565  NAD 27      -  38 48 22.95760(N)    076 59 55.77070(W) AD(       ) 2
 HV7565
 HV7565.Superseded values are not recommended for survey control.
 HV7565
 HV7565.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7565.See file dsdata.pdf to determine how the superseded data were derived.
 HV7565
 HV7565_MARKER: DE = TRAVERSE STATION DISK
 HV7565_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7565_STAMPING: INDIAN 1958
 HV7565_MARK LOGO: CGS
 HV7565_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7565+STABILITY: SURFACE MOTION
 HV7565
 HV7565  HISTORY     - Date     Condition        Report By
 HV7565  HISTORY     - 1958     MONUMENTED       CGS
 HV7565  HISTORY     - 1960     SEE DESCRIPTION  MDDT
 HV7565
 HV7565                          STATION DESCRIPTION
 HV7565
 HV7565'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 HV7565'THIS IS AN UNOCCUPIED TRAVERSE STATION, AND THE AZIMUTH MARK FOR
 HV7565'TRIANGULATION STATION OXON.  DISTANCE 561.064 METERS.
 HV7565'
 HV7565'STATION IS LOCATED ALONG THE EAST SIDE OF STATE HIGHWAY NO. 210
 HV7565'(INDIAN HEAD ROAD) ABOUT 0.9 MILE SOUTHEAST OF DISTRICT LINE AND
 HV7565'ABOUT 0.15 MILE SOUTH OF DISTRICT HEIGHTS.  STATION IS 43 FEET EAST
 HV7565'OF APPROXIMATE CENTERLINE OF STATE HIGHWAY NO. 210 AND 37 FEET
 HV7565'WEST OF A GUARD FENCE.  THE MARK IS A STANDARD TRAVERSE DISK
 HV7565'SET IN A 6X6 INCH CONCRETE MONUMENT, FLUSH WITH THE GROUND AND
 HV7565'THE DISK IS STAMPED INDIAN 1958.
 HV7565'
 HV7565'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS NO. 210 AND 414 AT
 HV7565'STATION OXON, GO NORTH ON STATE HIGHWAY NO. 210 FOR 0.25 MILE TO
 HV7565'STATION ON RIGHT (EAST) SIDE OF HIGHWAY AS DESCRIBED.
 HV7565
 HV7565                          STATION RECOVERY (1960)
 HV7565
 HV7565'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960
 HV7565'STATION WAS RECOVERED AS DESCRIBED AND THE MARK WAS IN GOOD
 HV7565'CONDITION.  HIGHWAY CONSTRUCTION IN THE IMMEDIATE AREA MADE IT
 HV7565'NECESSARY TO RELOCATE THIS STATION.  THE NEW STATION IS A
 HV7565'STANDARD DISK, STAMPED INDIAN 2 1960, AND SET FLUSH IN A DRILL
 HV7565'HOLE IN THE CONCRETE CURB OF CREE DRIVE.  IT IS 106.6 FEET WEST
 HV7565'OF THE CENTERLINE OF THE SOUTH BOUND LANE OF HIGHWAY 210, 12
 HV7565'FEET SOUTH OF THE CENTERLINE OF CREE DRIVE AND 6.6 FEET EAST
 HV7565'OF A POWER LINE POLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5002 ***********************************************************************
 JV5002  DESIGNATION -  INDIAN
 JV5002  PID         -  JV5002
 JV5002  STATE/COUNTY-  MD/QUEEN ANNES
 JV5002  COUNTRY     -  US
 JV5002  USGS QUAD   -  CENTREVILLE (2017)
 JV5002
 JV5002                         *CURRENT SURVEY CONTROL
 JV5002  ______________________________________________________________________
 JV5002* NAD 83(1991) POSITION- 39 06 46.79934(N) 076 06 20.71630(W)   ADJUSTED
 JV5002* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5002  ______________________________________________________________________
 JV5002  GEOID HEIGHT    -        -33.552 (meters)                     GEOID18
 JV5002  LAPLACE CORR    -         -2.47  (seconds)                    DEFLEC18
 JV5002  HORZ ORDER      -  THIRD
 JV5002
 JV5002.The horizontal coordinates were established by classical geodetic methods
 JV5002.and adjusted by the National Geodetic Survey in January 1992.
 JV5002
 JV5002.The orthometric height was scaled from a topographic map.
 JV5002
 JV5002.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5002.GEOID18 height accuracy estimate available here.
 JV5002
 JV5002.Click photographs - Photos may exist for this station.
 JV5002
 JV5002.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5002
 JV5002. The following values were computed from the NAD 83(1991) position.
 JV5002
 JV5002;                    North         East     Units Scale Factor Converg.
 JV5002;SPC MD       -   160,929.289   477,337.447   MT  0.99995839   +0 33 40.5
 JV5002;SPC MD       -   527,982.18  1,566,064.61   sFT  0.99995839   +0 33 40.5
 JV5002;UTM  18      - 4,329,898.401   404,402.037   MT  0.99971253   -0 41 51.4
 JV5002
 JV5002!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5002!SPC MD       -   1.00000514  x   0.99995839  =   0.99996353
 JV5002!UTM  18      -   1.00000514  x   0.99971253  =   0.99971767
 JV5002
 JV5002:                Primary Azimuth Mark                     Grid Az
 JV5002:SPC MD       -  CORPSE                                   217 35 24.4
 JV5002:UTM  18      -  CORPSE                                   218 50 56.3
 JV5002
 JV5002_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0440229898(NAD 83)
 JV5002
 JV5002|---------------------------------------------------------------------|
 JV5002| PID    Reference Object                     Distance      Geod. Az  |
 JV5002|                                                           dddmmss.s |
 JV5002| JV5008 CORPSE                              APPROX. 1.0 KM 2180904.9 |
 JV5002|---------------------------------------------------------------------|
 JV5002
 JV5002                          SUPERSEDED SURVEY CONTROL
 JV5002
 JV5002  NAD 83(1986)-  39 06 46.79353(N)    076 06 20.72824(W) AD(       ) 3
 JV5002  NAD 27      -  39 06 46.40200(N)    076 06 21.90900(W) AD(       ) 3
 JV5002  USSD        -  39 06 46.80200(N)    076 06 21.70000(W) AD(       ) 3
 JV5002
 JV5002.Superseded values are not recommended for survey control.
 JV5002
 JV5002.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5002.See file dsdata.pdf to determine how the superseded data were derived.
 JV5002
 JV5002_MARKER: H = DRILL HOLE
 JV5002_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5002_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5002+STABILITY: SURFACE MOTION
 JV5002
 JV5002  HISTORY     - Date     Condition        Report By
 JV5002  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5002  HISTORY     - 1939     SEE DESCRIPTION  CGS
 JV5002  HISTORY     - 1961     SEE DESCRIPTION  CGS
 JV5002  HISTORY     - 1976     SEE DESCRIPTION  MDDNR
 JV5002
 JV5002                          STATION DESCRIPTION
 JV5002
 JV5002'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5002'STATION IS ON THE SOUTHEASTERN SHORE OF CHESTER RIVER, NEAR
 JV5002'INDIANTOWN WHARF, ABOUT 3/4 MILE ENE OF DEEP POINT, ABOUT 2 FEET
 JV5002'ABOVE HIGH WATER, 10 YARDS E OF SHORE END OF INDIANTOWN WHARF, 10
 JV5002'YARDS SE OF SHORE, 21 YARDS N OF CURVED FENCE OF YARD OF SMALL
 JV5002'HOUSE, AND 40 YARDS N BY W OF A HOUSE.
 JV5002'
 JV5002'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5002'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5002'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5002'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.
 JV5002'THE SUBSURFACE MARK IS THE CENTER OF A 2-INCH DRAINTILE PIPE,
 JV5002'BURIED WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5002'
 JV5002'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5002'FOLLOWS--RIGHT TANGENT OF CURVED FENCE, 40 YARDS, S 2 DEG 49
 JV5002'MIN W.  CHIMNEY OF LARGE HOUSE, 1/2 MILE, S 13 DEG 07 MIN W. RIGHT
 JV5002'TANGENT OF SPANIARD WHARF, 2 MILES, S 60 DEG 49 MIN W.  RIGHT CHIMNEY
 JV5002'OF WESCOTT BUNGALOW, 3/4 MILE, S 73 DEG 04 MIN W.  NEAR CORNER OF
 JV5002'WHARF HOUSE, 100 YARDS, N 69 DEG 01 MIN W. LEFT TANGENT OF MASSEYS
 JV5002'BRICK HOUSE, 1/2 MILE, N 45 DEG 03 MIN W. LARGE CHIMNEY OF HOUSE
 JV5002'BEYOND TREES, 1 MILE, N 04 DEG 17 MIN E. CHIMNEY OF SMALL HOUSE
 JV5002'NEAR QUAKER NECK WHARF, 1-1/4 MILES, N 19 DEG 33 MIN E. LEFT
 JV5002'TANGENT OF ASHLAND WHARF, 5/8 MILE, N 34 DEG 28 MIN ELONE CEDAR
 JV5002'TREE, 120 YARDS, N 40 DEG 33 MIN E. NAIL IN BLAZE IN 12-INCH CEDAR
 JV5002'TREE, 31.24 METERS (102.5 FEET), S 34 DEG 07 MIN E. NEAR CORNER
 JV5002'OF WHARF, 5/8 MILE, S 33 DEG 27 MIN E. NAIL IN BLAZE IN 10-INCH
 JV5002'CEDAR TREE, 18.68 METERS (61.3 FEET), S 15 DEG 52 MIN E.
 JV5002'NAIL IN BLAZE IN 20-INCH CEDAR TREE, 30.92 METERS (101.4
 JV5002'FEET), S 02 DEG 10 MIN E.
 JV5002
 JV5002                          STATION RECOVERY (1939)
 JV5002
 JV5002'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV5002'DESCRIPTION SHOULD READ--LOCATED ON THE SOUTHEASTERN SHORE OF
 JV5002'CHESTER RIVER, AT INDIANTOWN WHARF, ABOUT 3/4 MILE ENE OF DEEP
 JV5002'POINT.  THE TOP OF THE MARK IS BROKEN OFF, AND THE REMAINING PART
 JV5002'COVERED WITH A LITTLE SAND AND GRASS.  IT WAS RECOVERED BY
 JV5002'MEASUREMENTS FROM BLAZED CEDAR TREES MENTIONED IN THE ORIGINAL
 JV5002'DESCRIPTION.  NAIL IN BLAZE IN 12-INCH CEDAR TREE 31.24
 JV5002'METERS.  NAIL IN BLAZE IN 10-INCH CEDAR TREE 18.68 METERS.
 JV5002'NAIL IN BLAZE IN 20-INCH CEDAR TREE 30.92 METERS.  STATION CAN
 JV5002'BE RECOVERED BY MEASURING OUT ALONG THE DOCK A DISTANCE OF
 JV5002'3.91 METERS FROM THE INSHORE END, FROM THAT POINT THE
 JV5002'STATION IS 12.20 METERS NE OF THE CENTER LINE OF THE DOCK,
 JV5002'MEASURED ON A LINE PERPENDICULAR TO THE CENTER LINE OF THE
 JV5002'DOCK.  THE BEARINGS TO VARIOUS OBJECTS, MENTIONED IN THE
 JV5002'ORIGINAL DESCRIPTION, WERE NOT CHECKED.
 JV5002
 JV5002                          STATION RECOVERY (1961)
 JV5002
 JV5002'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 JV5002'STATION FOUND WITH TOP OF THE MONUMENT BROKEN OFF FLUSH WITH THE
 JV5002'GROUND.  ONLY THE 20 INCH CEDAR REMAINS OF THE REFERENCE TREES
 JV5002'AND THE PIER MENTIONED IN THE 1939 RECOVERY NOTE HAS BEEN
 JV5002'CHANGED.  STATION IS NW OF LARGE WHITE HOUSE, 9.23 METERS N OF
 JV5002'THE N CORNER OF CONCRETE BULKHEAD AND 3 FT. E OF THE M.H.W.L.
 JV5002
 JV5002                          STATION RECOVERY (1976)
 JV5002
 JV5002'RECOVERY NOTE BY MD DEPT OF NAT RES 1976 (GEH)
 JV5002'MSFC-USCS SURFACE MON. WASHED OUT
 JV5002'
 JV5002'SUBSURFACE MARK RECOVERED EXPOSED 1 IN
 JV5002'
 JV5002'SURFACE MON. DESTROYED, SUBMARK RECOVD. EXPOSED 1 IN, A COPPERWELD
 JV5002'STAKE WAS PLACED IN CENT. OF 2 IN TILE AND PROJECTS 12 IN.  THE
 JV5002'MARK IS NOW COVERED BY WATER AT HIGH TIDE.  STA. LOCATED 24.5
 JV5002'FT FROM END OF CONC. BULKHEAD AND 30.5 FT FROM ANGLE IN BULKHEAD
 JV5002'AND 15 FT W. OF W EDGE OF WATER BUSHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2072 ***********************************************************************
 HU2072  DESIGNATION -  INDIAN 2
 HU2072  PID         -  HU2072
 HU2072  STATE/COUNTY-  MD/DORCHESTER
 HU2072  COUNTRY     -  US
 HU2072  USGS QUAD   -  EAST NEW MARKET (2016)
 HU2072
 HU2072                         *CURRENT SURVEY CONTROL
 HU2072  ______________________________________________________________________
 HU2072* NAD 83(1991) POSITION- 38 35 01.13516(N) 075 58 54.94236(W)   ADJUSTED
 HU2072* NAVD 88 ORTHO HEIGHT -     2.62  (+/-2cm)        8.6   (feet) VERTCON3
 HU2072  ______________________________________________________________________
 HU2072  GEOID HEIGHT    -        -35.168 (meters)                     GEOID18
 HU2072  LAPLACE CORR    -         -2.82  (seconds)                    DEFLEC18
 HU2072  HORZ ORDER      -  FIRST
 HU2072  VERT ORDER      -  THIRD (See Below)
 HU2072
 HU2072.The horizontal coordinates were established by classical geodetic methods
 HU2072.and adjusted by the National Geodetic Survey in January 1992.
 HU2072
 HU2072.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2072.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2072
 HU2072.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2072.GEOID18 height accuracy estimate available here.
 HU2072
 HU2072.The vertical order pertains to the NGVD 29 superseded value.
 HU2072
 HU2072.Click photographs - Photos may exist for this station.
 HU2072
 HU2072.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2072
 HU2072. The following values were computed from the NAD 83(1991) position.
 HU2072
 HU2072;                    North         East     Units Scale Factor Converg.
 HU2072;SPC MD       -   102,283.197   488,701.254   MT  0.99996278   +0 38 20.3
 HU2072;SPC MD       -   335,574.12  1,603,347.36   sFT  0.99996278   +0 38 20.3
 HU2072;UTM  18      - 4,271,032.350   414,476.104   MT  0.99969007   -0 36 44.7
 HU2072
 HU2072!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2072!SPC MD       -   1.00000511  x   0.99996278  =   0.99996789
 HU2072!UTM  18      -   1.00000511  x   0.99969007  =   0.99969518
 HU2072
 HU2072:                Primary Azimuth Mark                     Grid Az
 HU2072:SPC MD       -  INDIAN RM 3 AZIMUTH                      263 45 07.4
 HU2072:UTM  18      -  INDIAN RM 3 AZIMUTH                      265 00 12.4
 HU2072
 HU2072_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1447671032(NAD 83)
 HU2072
 HU2072|---------------------------------------------------------------------|
 HU2072| PID    Reference Object                     Distance      Geod. Az  |
 HU2072|                                                           dddmmss.s |
 HU2072| HU2073 INDIAN                               64.680 METERS 06010     |
 HU2072| DC7418 INDIAN RM 2                          11.958 METERS 09357     |
 HU2072| DC7420 INDIAN 2 RM 4                        40.336 METERS 17055     |
 HU2072| HV5875 CAMBRIDGE GRACE METH CH SPIRE       APPROX. 8.5 KM 2582805.6 |
 HU2072| HV5877 CAMBRIDGE MFG CO TANK               APPROX. 7.8 KM 2600632.9 |
 HU2072| HU2123 INDIAN 2 AZ MK 2                    APPROX. 1.1 KM 2610336.4 |
 HU2072| HV5878 CAMBRIDGE CHRISTS CHURCH SPIRE      APPROX. 8.3 KM 2611509.6 |
 HU2072| DC7419 INDIAN RM 3 AZIMUTH                                2642327.7 |
 HU2072|---------------------------------------------------------------------|
 HU2072
 HU2072                          SUPERSEDED SURVEY CONTROL
 HU2072
 HU2072  NAD 83(1986)-  38 35 01.13147(N)    075 58 54.95974(W) AD(       ) 1
 HU2072  NAD 27      -  38 35 00.70800(N)    075 58 56.17700(W) AD(       ) 1
 HU2072  NGVD 29               2.85   (m)            9.4    (f) LEVELING    3  
 HU2072
 HU2072.Superseded values are not recommended for survey control.
 HU2072
 HU2072.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2072.See file dsdata.pdf to determine how the superseded data were derived.
 HU2072
 HU2072_MARKER: DS = TRIANGULATION STATION DISK
 HU2072_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2072_STAMPING: INDIAN 2 1942
 HU2072_MARK LOGO: CGS
 HU2072_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2072_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2072+STABILITY: SURFACE MOTION
 HU2072
 HU2072  HISTORY     - Date     Condition        Report By
 HU2072  HISTORY     - 1942     MONUMENTED       CGS
 HU2072  HISTORY     - 1961     MARK NOT FOUND   CGS
 HU2072  HISTORY     - 1986     GOOD             NGS
 HU2072
 HU2072                          STATION DESCRIPTION
 HU2072
 HU2072'DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HU2072'THE STATION IS ABOUT 6 MILES E OF CAMBRIDGE, ON THE S SHORE OF THE
 HU2072'CHOPTANK RIVER, AT THE E SECTION OF BEACH HAVEN, AND JUST W OF THE
 HU2072'MOUTH OF INDIAN CREEK ON PROPERTY OWNED BY J.T. PRICE.  IT IS 124
 HU2072'FEET NE OF NE CORNER OF THE PRICE RESIDENCE, 33 FEET SSE OF THE
 HU2072'BLUFF, STAMPED INDIAN 2 1942, AND IS SET 18 INCHES BELOW THE
 HU2072'SURFACE.
 HU2072'
 HU2072'SURFACE AND UNDERGROUND MARKS ARE STANDARD BRONZE DISKS SET IN
 HU2072'CONCRETE.
 HU2072'
 HU2072'INDIAN 1934 (USED FOR REFERENCE MARK FOR INDIAN 2) IS E OF THE
 HU2072'STATION ON PROPERTY OWNED BY J.S. BRANCHAUD.  IT IS 61 FEET SW OF
 HU2072'BLUFF OF RIVER, 22 FEET NE OF THE NE CORNER OF THE BRANCHAUD
 HU2072'RESIDENCE, 10 FEET NE OF WELL, IS STAMPED INDIAN 1934, AND
 HU2072'PROJECTS 3 INCHES.
 HU2072'
 HU2072'REFERENCE MARK NO.2 IS ESE OF STATION IN A FENCE LINE AND IS
 HU2072'60 FEET SSE OF BLUFF.  IT IS A STANDARD DISK SET IN CONCRETE.
 HU2072'STAMPED INDIAN 1934 NO.2.  THE ARROW ON THE
 HU2072'MARK IS POINTING TOWARD INDIAN 1934 INSTEAD OF INDIAN 2.
 HU2072'
 HU2072'REFERENCE MARK NO.4 IS SSW OF THE STATION IS A FENCE LINE.  IT IS
 HU2072'45 FEET E OF J.T. PRICES RESIDENCE AND AT THE SW CORNER OF GRAPE
 HU2072'ARBOR.  IT IS A STANDARD DISK SET IN CONCRETE.
 HU2072'IS STAMPED INDIAN 2 NO.4 1942 AND IS SET FLUSH WITH THE
 HU2072'GROUND.
 HU2072'
 HU2072'REFERENCE MARK NO.3 (AZIMUTH MARK) IS WSW OF THE STATION, LOCATED
 HU2072'AT CEDAR GROVE, 8 PACES E OF A 14-INCH POPLAR TREE, 5 PACES N OF THE
 HU2072'NE CORNER OF A BATHHOUSE, AND 4 PACES S OF THE RIVER BANK.  IT IS
 HU2072'A STANDARD DISK SET IN CONCRETEA, IS
 HU2072'STAMPED INDIAN NO.3 1934, AND PROJECTS 3 INCHES.
 HU2072'
 HU2072'TO REACH THE AZIMUTH MARK FROM THE STATION GO S ON BEACH HAVEN
 HU2072'ROAD FOR 0.75 MILE TO STATE HIGHWAY 16, TURN RIGHT ON STATE HIGHWAY
 HU2072'16 AND GO 0.3 MILE TO THE CEDAR GROVE ROAD.  TURN RIGHT AND GO
 HU2072'1.2 MILES TO THE PARKING LOT AT CEDAR GROVE BEACH, HERE LEAVE
 HU2072'TRUCK AND PROCEED ON FOOT EASTWARD ABOUT 100 YARDS TO MARK.
 HU2072'
 HU2072'TO REACH THE STATION FROM THE CORNER OF RACE AND WASHINGTON
 HU2072'STREETS IN CAMBRIDGE (JUNCTION OF HIGHWAYS 213 AND 16) GO
 HU2072'EASTWARD ON STATE HIGHWAY 16 FOR 6.1 MILES TO BEACH HAVEN ROAD,
 HU2072'TURN LEFT AND GO 0.75 MILE TO J.T. PRICES RESIDENCE ON LEFT,
 HU2072'CONTINUE ON ABOUT 25 YARDS TO DIRT FARM ROAD LEFT BETWEEN MR.
 HU2072'PRICES RESIDENCE AND THAT OF MR. BRANCHAUD, CONTINUE ABOUT 250 FEET
 HU2072'TO STATION.
 HU2072'
 HU2072'A 103-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION WINDSOR.
 HU2072'
 HU2072'A 103-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT STATION MALVERN.
 HU2072'
 HU2072'A 103-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION JACKSON.
 HU2072'
 HU2072'A 103-FOOT TOWER WILL SEE A 100-FOOT LIGHT AT STATION SLAGLE.
 HU2072
 HU2072                          STATION RECOVERY (1961)
 HU2072
 HU2072'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (LFB)
 HU2072'DUE TO THE LOCATION OF THE STATION BENEATH THE LAWN THE STATION
 HU2072'MARK WAS NOT RECOVERED.  REFERENCE MARK NO.2 AND NO.4 WERE RECOVERED
 HU2072'IN GOOD CONDITION.  REFERENCE MARK NO.3 (AZ. MK.) WAS NOT
 HU2072'RECOVERED.  THE PUBLISHED DESCRIPTION IS ADEQUATE WITH THE
 HU2072'EXCEPTION THAT T. L. ANDREWS IS NOW THE OWNER OF THE PROPERTY WHERE
 HU2072'THE STATION IS LOCATED.
 HU2072
 HU2072                          STATION RECOVERY (1986)
 HU2072
 HU2072'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HU2072'THE DESIGNATED MARK WAS RECOVERED WITH CHANGES BELOW--
 HU2072'THE STATION MARK, REFERENCE MARK 1, REFERENCE MARK 2 AND REFERENCE
 HU2072'MARK 4 WERE RECOVERED AND FOUND IN GOOD CONDITION.  REFERENCE
 HU2072'MARK 3 WAS FOUND DESTROYED.  THE DISK WAS SALVAGED AT THIS
 HU2072'DATE.  A NEW AZIMUTH MARK 2 WAS ESTABLISHED AT THIS DATE.  A
 HU2072'LONGER DISTANCE OF 0.004 METER OR 0.02 FT WAS OBSERVED TO REFERENCE
 HU2072'MARK 2.  A LONGER DISTANCE OF 0.011 METER OR 0.04 FT WAS OBSERVED TO
 HU2072'REFERENCE MARK 4.  A DIFFERENCE OF 47 SECONDS IN DIRECTION WAS
 HU2072'OBSERVED TO REFERENCE MARK 4.  THE REASON FOR THE DIFFERENCES COULD
 HU2072'NOT BE DETERMINED.  A COMPLETE NEW DESCRIPTION FOLLOWS.
 HU2072'
 HU2072'THE STATION IS LOCATED ABOUT 8.5 KM (5.3 MI)
 HU2072'EAST-NORTHEAST OF CAMBRIDGE,
 HU2072'10 KM (6.2 MI) SOUTHEAST OF TRAPPE AND
 HU2072'5.2 KM (3.2 MI) WEST-SOUTHWEST OF EAST NEW MARKET.
 HU2072'OWNERSHIP--JESSIE FAULKNER, RT 1 BOX 140A, BEECH HAVEN ROAD, EAST
 HU2072'NEW MARKET, MARYLAND 21631.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7563 ***********************************************************************
 HV7563  DESIGNATION -  INDIAN 2
 HV7563  PID         -  HV7563
 HV7563  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7563  COUNTRY     -  US
 HV7563  USGS QUAD   -  ANACOSTIA (2016)
 HV7563
 HV7563                         *CURRENT SURVEY CONTROL
 HV7563  ______________________________________________________________________
 HV7563* NAD 83(1993) POSITION- 38 48 22.80696(N) 076 59 56.55466(W)   NO CHECK
 HV7563* NAVD 88 ORTHO HEIGHT -    56.    (meters)      184.    (feet) SCALED
 HV7563  ______________________________________________________________________
 HV7563  GEOID HEIGHT    -        -32.290 (meters)                     GEOID18
 HV7563  LAPLACE CORR    -         -2.93  (seconds)                    DEFLEC18
 HV7563  HORZ ORDER      -  THIRD
 HV7563
 HV7563.The horizontal coordinates were established by classical geodetic methods
 HV7563.and adjusted by the National Geodetic Survey in November 1994.
 HV7563
 HV7563.No horizontal observational check was made to the station.
 HV7563
 HV7563.The orthometric height was scaled from a topographic map.
 HV7563
 HV7563.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7563.GEOID18 height accuracy estimate available here.
 HV7563
 HV7563.Click photographs - Photos may exist for this station.
 HV7563
 HV7563.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7563
 HV7563. The following values were computed from the NAD 83(1993) position.
 HV7563
 HV7563;                    North         East     Units Scale Factor Converg.
 HV7563;SPC MD       -   126,507.848   400,083.126   MT  0.99995058   +0 00 02.2
 HV7563;SPC MD       -   415,051.16  1,312,606.06   sFT  0.99995058   +0 00 02.2
 HV7563;UTM  18      - 4,297,183.853   326,420.842   MT  0.99997103   -1 15 11.1
 HV7563
 HV7563!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7563!SPC MD       -   0.99999632  x   0.99995058  =   0.99994690
 HV7563!UTM  18      -   0.99999632  x   0.99997103  =   0.99996735
 HV7563
 HV7563:                Primary Azimuth Mark                     Grid Az
 HV7563:SPC MD       -  FOREST HEIGHTS WSSC TANK                 024 44 25.3
 HV7563:UTM  18      -  FOREST HEIGHTS WSSC TANK                 025 59 38.6
 HV7563
 HV7563_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH2642097183(NAD 83)
 HV7563
 HV7563|---------------------------------------------------------------------|
 HV7563| PID    Reference Object                     Distance      Geod. Az  |
 HV7563|                                                           dddmmss.s |
 HV7563| CX2925 INDIAN 2 RM 1                        21.872 METERS 00924     |
 HV7563| HV7609 FOREST HEIGHTS WSSC TANK            APPROX. 0.5 KM 0244427.5 |
 HV7563| HV7565 INDIAN                               48.605 METERS 06912     |
 HV7563|---------------------------------------------------------------------|
 HV7563
 HV7563                          SUPERSEDED SURVEY CONTROL
 HV7563
 HV7563  NAD 83(1991)-  38 48 22.80545(N)    076 59 56.55601(W) AD(       ) 3
 HV7563  NAD 83(1986)-  38 48 22.80529(N)    076 59 56.56793(W) AD(       ) 3
 HV7563  NAD 27      -  38 48 22.39801(N)    076 59 57.65395(W) AD(       ) 3
 HV7563
 HV7563.Superseded values are not recommended for survey control.
 HV7563
 HV7563.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7563.See file dsdata.pdf to determine how the superseded data were derived.
 HV7563
 HV7563_MARKER: DS = TRIANGULATION STATION DISK
 HV7563_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV7563_SP_SET: CURB
 HV7563_STAMPING: INDIAN 2 1960
 HV7563_MARK LOGO: CGS
 HV7563_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV7563
 HV7563  HISTORY     - Date     Condition        Report By
 HV7563  HISTORY     - 1960     MONUMENTED       MDDT
 HV7563
 HV7563                          STATION DESCRIPTION
 HV7563
 HV7563'DESCRIBED BY MARYLAND DEPARTMENT OF TRANSPORTATION 1960 (CWP)
 HV7563'STATION IS LOCATED ON THE WEST SIDE OF STATE HIGHWAY 210 (INDIAN
 HV7563'HEAD ROAD) APPROXIMATELY 0.9 MILE SOUTHEAST OF THE DISTRICT OF
 HV7563'COLUMBIA LINE AND APPROXIMATELY 0.2 MILE SOUTH OF DISTRICT
 HV7563'HEIGHTS, MARYLAND.  MARK IS A STANDARD DISK, STAMPED INDIAN 2
 HV7563'1960, AND SET FLUSH IN A DRILL HOLE IN THE CONCRETE CURB OF CREE
 HV7563'DRIVE.  IT IS 106.6 FEET WEST OF THE CENTERLINE OF THE SOUTH
 HV7563'BOUND LANE OF HIGHWAY 210, 12 FEET SOUTH OF THE CENTERLINE OF
 HV7563'CREE DRIVE AND 6.6 FEET EAST OF A POWER LINE POLE.
 HV7563'
 HV7563'REFERENCE MARK NO. 1 IS A STANDARD DISK, STAMPED INDIAN 2 NO
 HV7563'1 1960, SET FLUSH IN A DRILL HOLE IN A CONCRETE CURB, 8.6 FEET
 HV7563'NORTHEAST OF A FIRE HYDRANT AND 2.6 FEET EAST OF THE EAST EDGE OF
 HV7563'THE CONCRETE SIDEWALK.
 HV7563'
 HV7563'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 210 AND
 HV7563'STATE HIGHWAY 414, GO NORTH ON HIGHWAY 210 FOR 0.25 MILE TO
 HV7563'THE STATION ON THE LEFT AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2123 ***********************************************************************
 HU2123  DESIGNATION -  INDIAN 2 AZ MK 2
 HU2123  PID         -  HU2123
 HU2123  STATE/COUNTY-  MD/DORCHESTER
 HU2123  COUNTRY     -  US
 HU2123  USGS QUAD   -  EAST NEW MARKET (2016)
 HU2123
 HU2123                         *CURRENT SURVEY CONTROL
 HU2123  ______________________________________________________________________
 HU2123* NAD 83(1991) POSITION- 38 34 55.69192(N) 075 59 39.00657(W)   ADJUSTED
 HU2123* NAVD 88 ORTHO HEIGHT -     1.6   (meters)        5.    (feet) VERTCON3
 HU2123  ______________________________________________________________________
 HU2123  GEOID HEIGHT    -        -35.152 (meters)                     GEOID18
 HU2123  LAPLACE CORR    -         -2.92  (seconds)                    DEFLEC18
 HU2123  HORZ ORDER      -  SECOND
 HU2123
 HU2123.The horizontal coordinates were established by classical geodetic methods
 HU2123.and adjusted by the National Geodetic Survey in January 1992.
 HU2123
 HU2123.The NAVD 88 height was computed by applying the VERTCON shift value to
 HU2123.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HU2123
 HU2123.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2123.GEOID18 height accuracy estimate available here.
 HU2123
 HU2123.Click photographs - Photos may exist for this station.
 HU2123
 HU2123.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU2123
 HU2123. The following values were computed from the NAD 83(1991) position.
 HU2123
 HU2123;                    North         East     Units Scale Factor Converg.
 HU2123;SPC MD       -   102,103.547   487,636.710   MT  0.99996291   +0 37 52.7
 HU2123;SPC MD       -   334,984.72  1,599,854.77   sFT  0.99996291   +0 37 52.7
 HU2123;UTM  18      - 4,270,876.033   413,408.181   MT  0.99969234   -0 37 12.1
 HU2123
 HU2123!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU2123!SPC MD       -   1.00000526  x   0.99996291  =   0.99996817
 HU2123!UTM  18      -   1.00000526  x   0.99969234  =   0.99969760
 HU2123
 HU2123_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH1340870876(NAD 83)
 HU2123
 HU2123                          SUPERSEDED SURVEY CONTROL
 HU2123
 HU2123  NAD 83(1986)-  38 34 55.68853(N)    075 59 39.02372(W) AD(       ) 2
 HU2123  NGVD 29 (07/14/89)    1.8    (m)            6.     (f) VERT ANG       
 HU2123
 HU2123.Superseded values are not recommended for survey control.
 HU2123
 HU2123.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2123.See file dsdata.pdf to determine how the superseded data were derived.
 HU2123
 HU2123_MARKER: DZ = AZIMUTH MARK DISK
 HU2123_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2123_STAMPING: INDIAN 2 1942 NO 2 1986
 HU2123_MARK LOGO: NGS
 HU2123_MAGNETIC: N = NO MAGNETIC MATERIAL
 HU2123_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2123+STABILITY: SURFACE MOTION
 HU2123
 HU2123  HISTORY     - Date     Condition        Report By
 HU2123  HISTORY     - 1986     MONUMENTED       NGS
 HU2123  HISTORY     - 20070311 MARK NOT FOUND   USPSQD
 HU2123
 HU2123                          STATION DESCRIPTION
 HU2123
 HU2123'DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 (RGP)
 HU2123'THE STATION IS LOCATED ABOUT 6.3 KM (3.9 MI) WEST-SOUTHWEST OF EAST
 HU2123'NEW MARKET, 7.3 KM (4.5 MI) EAST-NORTHEAST FROM CAMBRIDGE AND 9.4 KM
 HU2123'(5.8 MI) SOUTHEAST OF TRAPPE.  OWNERSHIP--ROAD RIGHT OF WAY.
 HU2123'
 HU2123'TO REACH THE STATION FROM THE SOUTH END OF THE U.S. HIGHWAY 50 BRIDGE
 HU2123'OVER THE CHOPTANK RIVER AT CAMBRIDGE, GO SOUTHEAST FOR 7.1 KM (4.4 MI)
 HU2123'ON U.S. HIGHWAY 50 TO A SIDE ROAD LEFT.  TURN LEFT AND GO NORTHEAST
 HU2123'FOR 1.7 KM (1.1 MI) ON MD 16 TO A SIDE ROAD LEFT.  TURN LEFT AND GO
 HU2123'NORTH FOR 2.0 KM (1.2 MI) ON CEDAR GROVE ROAD TO THE STATION ON THE
 HU2123'LEFT.
 HU2123'
 HU2123'THE STATION IS A STANDARD NATIONAL GEODETIC SURVEY DISK
 HU2123'STAMPED---INDIAN 2 1942 NO 2 1986---, SET INTO THE TOP OF A ROUND
 HU2123'CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER RECESSED 8 CM
 HU2123'(3 INCHES) BELOW GROUND.  LOCATED 3.7 M (12.1 FT) WEST FROM THE CENTER
 HU2123'OF CEDAR GROVE ROAD, 5.3 M (17.4 FT) SOUTHEAST FROM A POWER
 HU2123'TRANSFORMER DISTRIBUTION BOX NUMBER 35620 01128, 25.3 M (83.0 FT)
 HU2123'SOUTHWEST FROM A POWER LINE POLE NUMBER 35627 01135, 9.2 M (30.2 FT)
 HU2123'WEST FROM A WOODEN FENCE AND 4.8 M (15.7 FT) SOUTHEAST FROM A WITNESS
 HU2123'POST.  THE UNDERGROUND MARK IS A STANDARD NATIONAL GEODETIC SURVEY
 HU2123'DISK STAMPED---INDIAN 2 1942 NO 2 1986---, SET INTO AN IRREGULAR MASS
 HU2123'OF CONCRETE 1.0 M (3.3 FT) BELOW THE SURFACE.
 HU2123
 HU2123                          STATION RECOVERY (2007)
 HU2123
 HU2123'RECOVERY NOTE BY US POWER SQUADRON 2007 (JCH)
 HU2123'AFTER FOLLOWING ALL DIRECTIONS AND COMPLETEING ALL MEASUREMENTS NO
 HU2123'MARK WAS FOUND. GPS COORDINATES WERE ACCURATE. A METAL DETECTOR WAS
 HU2123'USED. ALL DESCRIBED OBJECTS WERE LOCATED AND MEASURED. CARSONITE SIGN
 HU2123'IS IN PLACE. ROAD HAS BEEN REGRADED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV8811 ***********************************************************************
 HV8811  DESIGNATION -  INDIAN HEAD
 HV8811  PID         -  HV8811
 HV8811  STATE/COUNTY-  MD/CHARLES
 HV8811  COUNTRY     -  US
 HV8811  USGS QUAD   -  INDIAN HEAD (2016)
 HV8811
 HV8811                         *CURRENT SURVEY CONTROL
 HV8811  ______________________________________________________________________
 HV8811* NAD 83(2011) POSITION- 38 35 59.20811(N) 077 09 56.83614(W)   ADJUSTED
 HV8811* NAD 83(2011) ELLIP HT-     1.715 (meters)        (06/27/12)   ADJUSTED
 HV8811* NAD 83(2011) EPOCH   -  2010.00
 HV8811* NAVD 88 ORTHO HEIGHT -    34.5   (meters)      113.    (feet) VERTCON3
 HV8811  ______________________________________________________________________
 HV8811  GEOID HEIGHT    -        -32.519 (meters)                     GEOID18
 HV8811  NAD 83(2011) X  -  1,108,691.813 (meters)                     COMP
 HV8811  NAD 83(2011) Y  - -4,866,473.095 (meters)                     COMP
 HV8811  NAD 83(2011) Z  -  3,957,692.837 (meters)                     COMP
 HV8811  LAPLACE CORR    -         -1.96  (seconds)                    DEFLEC18
 HV8811
 HV8811  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV8811  Standards:
 HV8811         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV8811            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV8811  -------------------------------------------------------------------
 HV8811  NETWORK    1.24   2.65           0.43   0.55   1.35     -0.33149202
 HV8811  -------------------------------------------------------------------
 HV8811  Click here for local accuracies and other accuracy information.
 HV8811
 HV8811.The horizontal coordinates were established by GPS observations
 HV8811.and adjusted by the National Geodetic Survey in June 2012.
 HV8811
 HV8811.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV8811.been affixed to the stable North American tectonic plate. See 
 HV8811.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV8811
 HV8811.The horizontal coordinates are valid at the epoch date displayed above
 HV8811.which is a decimal equivalence of Year/Month/Day.
 HV8811
 HV8811.The NAVD 88 height was computed by applying the VERTCON shift value to
 HV8811.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 HV8811
 HV8811.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV8811.GEOID18 height accuracy estimate available here.
 HV8811
 HV8811.Click photographs - Photos may exist for this station.
 HV8811
 HV8811.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV8811
 HV8811.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV8811
 HV8811.The ellipsoidal height was determined by GPS observations
 HV8811.and is referenced to NAD 83.
 HV8811
 HV8811. The following values were computed from the NAD 83(2011) position.
 HV8811
 HV8811;                    North         East     Units Scale Factor Converg.
 HV8811;SPC MD       -   103,592.335   385,558.409   MT  0.99996139   -0 06 14.6
 HV8811;SPC MD       -   339,869.19  1,264,952.88   sFT  0.99996139   -0 06 14.6
 HV8811;SPC VA N     - 2,104,418.643 3,616,216.196   MT  0.99994843   +0 49 57.7
 HV8811;SPC VA N     - 6,904,246.83 11,864,202.64   sFT  0.99994843   +0 49 57.7
 HV8811;UTM  18      - 4,274,589.718   311,398.671   MT  1.00003805   -1 21 05.7
 HV8811
 HV8811!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV8811!SPC MD       -   0.99999973  x   0.99996139  =   0.99996112
 HV8811!SPC VA N     -   0.99999973  x   0.99994843  =   0.99994816
 HV8811!UTM  18      -   0.99999973  x   1.00003805  =   1.00003778
 HV8811
 HV8811_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1139874589(NAD 83)
 HV8811
 HV8811                          SUPERSEDED SURVEY CONTROL
 HV8811
 HV8811  NAD 83(2007)-  38 35 59.21001(N)    077 09 56.84648(W) AD(2002.00) 0
 HV8811  ELLIP H (02/10/07)    1.747  (m)                       GP(2002.00)    
 HV8811  ELLIP H (08/30/02)    1.996  (m)                       GP(       ) 4 2
 HV8811  NAD 83(1993)-  38 35 59.20884(N)    077 09 56.83558(W) AD(       ) 2
 HV8811  ELLIP H (11/14/94)    1.747  (m)                       GP(       ) 4 2
 HV8811  NAD 83(1991)-  38 35 59.20831(N)    077 09 56.83620(W) AD(       ) 2
 HV8811  ELLIP H (01/27/92)    1.965  (m)                       GP(       ) 4 1
 HV8811  NAD 83(1986)-  38 35 59.20937(N)    077 09 56.85010(W) AD(       ) 2
 HV8811  NGVD 29 (07/06/90)   34.8    (m)  RAPSU86  model used  GPS OBS        
 HV8811
 HV8811.Superseded values are not recommended for survey control.
 HV8811
 HV8811.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV8811.See file dsdata.pdf to determine how the superseded data were derived.
 HV8811
 HV8811_MARKER: DD = SURVEY DISK
 HV8811_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV8811_STAMPING: INDIAN HEAD 1989
 HV8811_MARK LOGO: MDSHA
 HV8811_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV8811_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV8811+STABILITY: SURFACE MOTION
 HV8811_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV8811+SATELLITE: SATELLITE OBSERVATIONS - March 23, 2009
 HV8811
 HV8811  HISTORY     - Date     Condition        Report By
 HV8811  HISTORY     - 1989     MONUMENTED       MDSHA
 HV8811  HISTORY     - 20090323 GOOD             GEOCAC
 HV8811
 HV8811                          STATION DESCRIPTION
 HV8811
 HV8811'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1989
 HV8811'THE STATION IS LOCATED IN THE APPROXIMATE CENTER OF THE TOWN OF INDIAN
 HV8811'HEAD, 0.4 KM (0.25 MI) EAST OF THE ENTRANCE TO THE NAVAL ORDINANCE
 HV8811'STATION AT INDIAN HEAD AND ON THE GROUNDS OF THE INDIAN HEAD
 HV8811'ELEMENTARY SCHOOL.  OWNERSHIP--CHARLES COUNTY BOARD OF EDUCATION.
 HV8811'TO REACH FROM THE POST OFFICE IN INDIAN HEAD, GO EAST ON STATE
 HV8811'HIGHWAYS 210 AND 225 FOR 0.36 KM (0.20 MI)  TO THE STATION ON THE LEFT
 HV8811'IN THE SOUTHEAST EDGE OF THE SCHOOL PLAY YARD.
 HV8811'THE STATION MARK IS A MARYLAND STATE HIGHWAY ADMINISTRATION DISK SET
 HV8811'IN THE TOP OF A 0.25 M (0.8 FT) ROUND CONCRETE MONUMENT WHICH IS FLUSH
 HV8811'WITH THE SURFACE OF THE GROUND.  IT IS 17.40 M (57.1 FT) NORTHEAST OF
 HV8811'POWERLINE POLE NUMBER 12, 72.09 M (236.5 FT) SOUTHEAST OF THE
 HV8811'SOUTHEAST CORNER OF THE INDIAN HEAD ELEMENTARY SCHOOL, 29.93 M
 HV8811'(98.2 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF A MACADAM BASKETBALL
 HV8811'COURT, 66.14 M (217.0 FT) WEST OF THE CENTER OF A MACADAM SIDE ROAD
 HV8811'OFF STATE HIGHWAY 210, 20.03 M (65.7 FT) NORTHWEST OF A POWERLINE POLE
 HV8811'NUMBERED 11 AND 8.99 M (29.5 FT) NORTH OF A CONCRETE CURB WHICH RUNS
 HV8811'ALONG THE NORTH SIDE OF THE WEST BOUND LANE OF STATE HIGHWAY 210.
 HV8811
 HV8811                          STATION RECOVERY (2009)
 HV8811
 HV8811'RECOVERY NOTE BY GEOCACHING 2009 (DPB)
 HV8811'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5014 ***********************************************************************
 HV5014  DESIGNATION -  INDIAN HEAD RED AIRWAY BCN
 HV5014  PID         -  HV5014
 HV5014  STATE/COUNTY-  MD/CHARLES
 HV5014  COUNTRY     -  US
 HV5014  USGS QUAD   -  INDIAN HEAD (2016)
 HV5014
 HV5014                         *CURRENT SURVEY CONTROL
 HV5014  ______________________________________________________________________
 HV5014* NAD 83(1993) POSITION- 38 35 10.91720(N) 077 10 16.07426(W)   ADJUSTED
 HV5014  ______________________________________________________________________
 HV5014  GEOID HEIGHT    -        -32.539 (meters)                     GEOID18
 HV5014  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 HV5014  HORZ ORDER      -  THIRD
 HV5014
 HV5014.The horizontal coordinates were established by classical geodetic methods
 HV5014.and adjusted by the National Geodetic Survey in November 1994.
 HV5014
 HV5014.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5014.GEOID18 height accuracy estimate available here.
 HV5014
 HV5014.Click photographs - Photos may exist for this station.
 HV5014
 HV5014.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5014
 HV5014. The following values were computed from the NAD 83(1993) position.
 HV5014
 HV5014;                    North         East     Units Scale Factor Converg.
 HV5014;SPC MD       -   102,104.180   385,090.115   MT  0.99996254   -0 06 26.7
 HV5014;SPC MD       -   334,986.80  1,263,416.49   sFT  0.99996254   -0 06 26.7
 HV5014;UTM  18      - 4,273,111.996   310,898.055   MT  1.00004038   -1 21 16.3
 HV5014
 HV5014_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1089873111(NAD 83)
 HV5014
 HV5014                          SUPERSEDED SURVEY CONTROL
 HV5014
 HV5014  NAD 83(1991)-  38 35 10.91704(N)    077 10 16.07681(W) AD(       ) 3
 HV5014  NAD 83(1986)-  38 35 10.91660(N)    077 10 16.08839(W) AD(       ) 3
 HV5014  NAD 27      -  38 35 10.48738(N)    077 10 17.16023(W) AD(       ) 3
 HV5014
 HV5014.Superseded values are not recommended for survey control.
 HV5014
 HV5014.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5014.See file dsdata.pdf to determine how the superseded data were derived.
 HV5014
 HV5014_MARKER: 22 = AIRWAY BEACON
 HV5014
 HV5014  HISTORY     - Date     Condition        Report By
 HV5014  HISTORY     - 1934     FIRST OBSERVED   CGS
 HV5014  HISTORY     - 1938     GOOD             CGS
 HV5014
 HV5014                          STATION DESCRIPTION
 HV5014
 HV5014'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV5014'STATION RECOVERED.  BEACON IS LOCATED AT THE CENTER OF THE TOP OF
 HV5014'THE STANDPIPE WHICH IS AT THE POWDER MANUFACTURING PLANT OF THE
 HV5014'INDIAN HEAD NAVAL RESERVATION.  THIS STANDPIPE HAS A CONE-SHAPED
 HV5014'TOP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5015 ***********************************************************************
 HV5015  DESIGNATION -  INDIAN HEAD SHORT STACK
 HV5015  PID         -  HV5015
 HV5015  STATE/COUNTY-  MD/CHARLES
 HV5015  COUNTRY     -  US
 HV5015  USGS QUAD   -  INDIAN HEAD (2016)
 HV5015
 HV5015                         *CURRENT SURVEY CONTROL
 HV5015  ______________________________________________________________________
 HV5015* NAD 83(1993) POSITION- 38 35 14.91433(N) 077 10 26.56087(W)   ADJUSTED
 HV5015  ______________________________________________________________________
 HV5015  GEOID HEIGHT    -        -32.534 (meters)                     GEOID18
 HV5015  LAPLACE CORR    -         -2.01  (seconds)                    DEFLEC18
 HV5015  HORZ ORDER      -  THIRD
 HV5015
 HV5015.The horizontal coordinates were established by classical geodetic methods
 HV5015.and adjusted by the National Geodetic Survey in November 1994.
 HV5015
 HV5015.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5015.GEOID18 height accuracy estimate available here.
 HV5015
 HV5015.Click photographs - Photos may exist for this station.
 HV5015
 HV5015.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5015
 HV5015. The following values were computed from the NAD 83(1993) position.
 HV5015
 HV5015;                    North         East     Units Scale Factor Converg.
 HV5015;SPC MD       -   102,227.908   384,836.559   MT  0.99996244   -0 06 33.3
 HV5015;SPC MD       -   335,392.73  1,262,584.61   sFT  0.99996244   -0 06 33.3
 HV5015;UTM  18      - 4,273,241.223   310,647.232   MT  1.00004155   -1 21 22.9
 HV5015
 HV5015_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1064773241(NAD 83)
 HV5015
 HV5015                          SUPERSEDED SURVEY CONTROL
 HV5015
 HV5015  NAD 83(1991)-  38 35 14.91389(N)    077 10 26.56280(W) AD(       ) 3
 HV5015  NAD 83(1986)-  38 35 14.91353(N)    077 10 26.57230(W) AD(       ) 3
 HV5015  NAD 27      -  38 35 14.47155(N)    077 10 27.68752(W) AD(       ) 3
 HV5015
 HV5015.Superseded values are not recommended for survey control.
 HV5015
 HV5015.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5015.See file dsdata.pdf to determine how the superseded data were derived.
 HV5015
 HV5015_MARKER: 63 = STACK
 HV5015
 HV5015  HISTORY     - Date     Condition        Report By
 HV5015  HISTORY     - 1934     FIRST OBSERVED   CGS
 HV5015  HISTORY     - 1938     GOOD             CGS
 HV5015  HISTORY     - 1958     GOOD             CGS
 HV5015
 HV5015                          STATION DESCRIPTION
 HV5015
 HV5015'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (TMP)
 HV5015'STATION RECOVERED.  TALL MASONRY STACK LOCATED AT THE POWDER
 HV5015'MANUFACTURING PLANT AT THE INDIAN HEAD NAVAL RESERVATION.
 HV5015
 HV5015                          STATION RECOVERY (1958)
 HV5015
 HV5015'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV5015'THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED BY
 HV5015'T.M.P. JR IN 1938.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7334 ***********************************************************************
 HV7334  DESIGNATION -  INDIAN MSFC 1908
 HV7334  PID         -  HV7334
 HV7334  STATE/COUNTY-  MD/CHARLES
 HV7334  COUNTRY     -  US
 HV7334  USGS QUAD   -  BENEDICT (2016)
 HV7334
 HV7334                         *CURRENT SURVEY CONTROL
 HV7334  ______________________________________________________________________
 HV7334* NAD 83(1993) POSITION- 38 30 22.68772(N) 076 40 42.66332(W)   ADJUSTED
 HV7334* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV7334  ______________________________________________________________________
 HV7334  GEOID HEIGHT    -        -33.694 (meters)                     GEOID18
 HV7334  LAPLACE CORR    -         -3.77  (seconds)                    DEFLEC18
 HV7334  HORZ ORDER      -  SECOND
 HV7334
 HV7334.The horizontal coordinates were established by classical geodetic methods
 HV7334.and adjusted by the National Geodetic Survey in November 1994.
 HV7334
 HV7334.The orthometric height was scaled from a topographic map.
 HV7334
 HV7334.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7334.GEOID18 height accuracy estimate available here.
 HV7334
 HV7334.Click photographs - Photos may exist for this station.
 HV7334
 HV7334.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7334
 HV7334. The following values were computed from the NAD 83(1993) position.
 HV7334
 HV7334;                    North         East     Units Scale Factor Converg.
 HV7334;SPC MD       -    93,252.255   428,040.472   MT  0.99997052   +0 12 06.4
 HV7334;SPC MD       -   305,945.11  1,404,329.45   sFT  0.99997052   +0 12 06.4
 HV7334;UTM  18      - 4,263,327.659   353,644.835   MT  0.99986379   -1 02 42.8
 HV7334
 HV7334!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7334!SPC MD       -   1.00000533  x   0.99997052  =   0.99997585
 HV7334!UTM  18      -   1.00000533  x   0.99986379  =   0.99986912
 HV7334
 HV7334:                Primary Azimuth Mark                     Grid Az
 HV7334:SPC MD       -  DWARF MSFC 1908                          121 32 58.0
 HV7334:UTM  18      -  DWARF MSFC 1908                          122 47 47.2
 HV7334
 HV7334_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH5364463327(NAD 83)
 HV7334
 HV7334|---------------------------------------------------------------------|
 HV7334| PID    Reference Object                     Distance      Geod. Az  |
 HV7334|                                                           dddmmss.s |
 HV7334| HV6846 DWARF MSFC 1908                     APPROX. 1.6 KM 1214504.4 |
 HV7334| HV7333 BENEDICT CATHOLIC CHURCH CROSS      APPROX. 0.9 KM 3575301.3 |
 HV7334|---------------------------------------------------------------------|
 HV7334
 HV7334                          SUPERSEDED SURVEY CONTROL
 HV7334
 HV7334  NAD 83(1991)-  38 30 22.68769(N)    076 40 42.66460(W) AD(       ) 2
 HV7334  NAD 83(1986)-  38 30 22.68673(N)    076 40 42.67863(W) AD(       ) 2
 HV7334  NAD 27      -  38 30 22.24300(N)    076 40 43.82300(W) AD(       ) 2
 HV7334  USSD        -  38 30 22.66000(N)    076 40 43.57300(W) AD(       ) 3
 HV7334
 HV7334.Superseded values are not recommended for survey control.
 HV7334
 HV7334.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7334.See file dsdata.pdf to determine how the superseded data were derived.
 HV7334
 HV7334_MARKER: H = DRILL HOLE
 HV7334_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7334_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7334+STABILITY: SURFACE MOTION
 HV7334
 HV7334  HISTORY     - Date     Condition        Report By
 HV7334  HISTORY     - 1908     MONUMENTED       MDSFC
 HV7334  HISTORY     - 1930     SEE DESCRIPTION  MDDNR
 HV7334  HISTORY     - 1945     SEE DESCRIPTION  CGS
 HV7334
 HV7334                          STATION DESCRIPTION
 HV7334
 HV7334'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV7334'STATION IS ON THE WESTERN SHORE OF PATUXENT RIVER, ON N SIDE OF
 HV7334'ENTRANCE TO INDIAN CREEK, AND ABOUT 1/4 MILE BELOW BENEDICT
 HV7334'STEAMBOAT WHARF, ABOUT 3 FEET ABOVE HIGH WATER, 7 YARDS W OF
 HV7334'SHORE, 16 YARDS NE OF A FENCE AND A LINE OF TREES, 13 YARDS SW OF
 HV7334'A LONE LOCUST TREE, ABOUT 250 YARDS TO THE SSE OF A LARGE SQUARE
 HV7334'HOUSE, AND 125 YARDS ENE OF ANOTHER HOUSE.
 HV7334'
 HV7334'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 HV7334'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 HV7334'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 HV7334'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES
 HV7334'AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS FOLLOWS--NAIL
 HV7334'IN BLAZE IN 5-INCH LOCUST TREE NEAR FENCE, 15.57 METERS (51.1
 HV7334'FEET), S 10 DEG 38 MIN W.  NAIL IN BLAZE IN MIDDLE BRANCH OF
 HV7334'LOCUST TREE (6 INCHES DIAMETER), 19.13 METERS (62.8 FEET), S 43
 HV7334'DEG 14 MIN W.  SQUARE CHIMNEY ON OLD HOUSE, 1-1/4 MILES, N 65 DEG
 HV7334'48 MIN W.  RIGHT CHIMNEY OF SQUARE HOUSE, 1/8 MILE, N 14 DEG 41
 HV7334'MIN W.  NEAR END OF PEAK OF ROOF OF HOTEL, 1/4 MILE, N 3 DEG 15
 HV7334'MIN E.  CANNING HOUSE STACK, 1/4 MILE, N 10 DEG 11 MIN E. NAIL IN
 HV7334'BLAZE IN LEFT BRANCH OF 5-INCH LOCUST TREE, 12.90 METERS (42.3
 HV7334'FEET), N 22 DEG 17 MIN E.  RIGHT TANGENT OF BENEDICT WHARF, 1/2
 HV7334'MILE, N 24 DEG 59 MIN E.  CHIMNEY OF HOUSE NEAR BUENA VISTA 2-1/4
 HV7334'MILES, N 42 DEG 47 MIN E.  CHIMNEY OF GOURLEY HOUSE, 1 MILE, N 67
 HV7334'DEG 17 MIN E.
 HV7334
 HV7334                          STATION RECOVERY (1930)
 HV7334
 HV7334'RECOVERY NOTE BY MD DEPT OF NAT RES 1930
 HV7334'STATION WASHED OUT OF BANK AND OWNER OF LOT RESET THE STONE FOUR
 HV7334'FEET FURTHER BACK FROM ORIGINAL LOCATION.
 HV7334
 HV7334                          STATION RECOVERY (1945)
 HV7334
 HV7334'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1945 (FLP)
 HV7334'THE STATION MARKER WAS RECOVERED, BUT THE MARK HAD WASHED OUT AND
 HV7334'WAS SET ABOVE SEA WALL BY OWNER OF THE LOT.  THE STATION IS LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0212 ***********************************************************************
 HV0212  DESIGNATION -  INDIGO RM 1
 HV0212  PID         -  HV0212
 HV0212  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0212  COUNTRY     -  US
 HV0212  USGS QUAD   -  ANNAPOLIS (2016)
 HV0212
 HV0212                         *CURRENT SURVEY CONTROL
 HV0212  ______________________________________________________________________
 HV0212* NAD 83(1986) POSITION- 38 59 40.57   (N) 076 29 07.94   (W)   HD_HELD1
 HV0212* NAVD 88 ORTHO HEIGHT -     6.449 (meters)       21.16  (feet) ADJUSTED
 HV0212  ______________________________________________________________________
 HV0212  GEOID HEIGHT    -        -33.328 (meters)                     GEOID18
 HV0212  DYNAMIC HEIGHT  -          6.445 (meters)       21.15  (feet) COMP
 HV0212  MODELED GRAVITY -    980,076.1   (mgal)                       NAVD 88
 HV0212
 HV0212  VERT ORDER      -  FIRST     CLASS I
 HV0212
 HV0212.The horizontal coordinates were determined by differentially corrected
 HV0212.hand held GPS observations or other comparable positioning techniques
 HV0212.and have an estimated accuracy of +/- 3 meters.
 HV0212
 HV0212.The orthometric height was determined by differential leveling and
 HV0212.adjusted by the NATIONAL GEODETIC SURVEY
 HV0212.in June 1991.
 HV0212
 HV0212.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0212.GEOID18 height accuracy estimate available here.
 HV0212
 HV0212.Click photographs - Photos may exist for this station.
 HV0212
 HV0212.The dynamic height is computed by dividing the NAVD 88
 HV0212.geopotential number by the normal gravity value computed on the
 HV0212.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0212.degrees latitude (g = 980.6199 gals.).
 HV0212
 HV0212.The modeled gravity was interpolated from observed gravity values.
 HV0212
 HV0212;                    North         East    Units  Estimated Accuracy
 HV0212;SPC MD       -   147,532.6     444,566.9     MT  (+/- 3 meters HH1 GPS) 
 HV0212
 HV0212_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7135117227(NAD 83)
 HV0212
 HV0212                          SUPERSEDED SURVEY CONTROL
 HV0212
 HV0212  NGVD 29 (11/26/84)    6.692  (m)           21.96   (f) ADJUSTED    1 1
 HV0212
 HV0212.Superseded values are not recommended for survey control.
 HV0212
 HV0212.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0212.See file dsdata.pdf to determine how the superseded data were derived.
 HV0212
 HV0212_MARKER: DR = REFERENCE MARK DISK
 HV0212_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0212_SP_SET: FOUNDATION
 HV0212_STAMPING: INDIGO 1
 HV0212_MARK LOGO: CGS
 HV0212_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0212
 HV0212  HISTORY     - Date     Condition        Report By
 HV0212  HISTORY     - 1932     MONUMENTED       CGS
 HV0212  HISTORY     - 1971     GOOD             NGS
 HV0212  HISTORY     - 19981218 GOOD             USPSQD
 HV0212  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV0212
 HV0212                          STATION DESCRIPTION
 HV0212
 HV0212'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0212'0.4 MI NE FROM ANNAPOLIS.
 HV0212'ABOUT 0.4 MILE NORTHEAST ALONG STATE HIGHWAY 450 FROM THE
 HV0212'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE SEVERN RIVER AT
 HV0212'ANNAPOLIS, AT THE NORTHEAST END OF THE BRIDGE, SET IN THE TOP
 HV0212'OF THE NORTH CORNER OF THE CONCRETE FOUNDATION FOR THE CONCRETE
 HV0212'MONUMENT AT THE NORTH CORNER OF THE BRIDGE, 11.4 FEET NORTHWEST
 HV0212'OF THE NORTHWEST CURB OF THE HIGHWAY, 17.1 FEET WEST-SOUTHWEST
 HV0212'OF MOOD (MD. GEOD. S.), 20.8 FEET SOUTH OF INDIGO RM 3 WHICH WAS
 HV0212'NOT LEVELED TO IN 1971, AND ABOUT 3 1/2 FEET ABOVE THE LEVEL OF
 HV0212'THE GROUND.
 HV0212
 HV0212                          STATION RECOVERY (1998)
 HV0212
 HV0212'RECOVERY NOTE BY US POWER SQUADRON 1998
 HV0212'RECOVERED IN GOOD CONDITION.
 HV0212
 HV0212                          STATION RECOVERY (2001)
 HV0212
 HV0212'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0212'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0213 ***********************************************************************
 HV0213  DESIGNATION -  INDIGO RM 2
 HV0213  PID         -  HV0213
 HV0213  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV0213  COUNTRY     -  US
 HV0213  USGS QUAD   -  ANNAPOLIS (2016)
 HV0213
 HV0213                         *CURRENT SURVEY CONTROL
 HV0213  ______________________________________________________________________
 HV0213* NAD 83(1986) POSITION- 38 59 40.20   (N) 076 29 07.62   (W)   HD_HELD1
 HV0213* NAVD 88 ORTHO HEIGHT -     6.427 (meters)       21.09  (feet) ADJUSTED
 HV0213  ______________________________________________________________________
 HV0213  GEOID HEIGHT    -        -33.328 (meters)                     GEOID18
 HV0213  DYNAMIC HEIGHT  -          6.423 (meters)       21.07  (feet) COMP
 HV0213  MODELED GRAVITY -    980,076.1   (mgal)                       NAVD 88
 HV0213
 HV0213  VERT ORDER      -  FIRST     CLASS I
 HV0213
 HV0213.The horizontal coordinates were determined by differentially corrected
 HV0213.hand held GPS observations or other comparable positioning techniques
 HV0213.and have an estimated accuracy of +/- 3 meters.
 HV0213
 HV0213.The orthometric height was determined by differential leveling and
 HV0213.adjusted by the NATIONAL GEODETIC SURVEY
 HV0213.in June 1991.
 HV0213
 HV0213.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0213.GEOID18 height accuracy estimate available here.
 HV0213
 HV0213.Click photographs - Photos may exist for this station.
 HV0213
 HV0213.The dynamic height is computed by dividing the NAVD 88
 HV0213.geopotential number by the normal gravity value computed on the
 HV0213.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0213.degrees latitude (g = 980.6199 gals.).
 HV0213
 HV0213.The modeled gravity was interpolated from observed gravity values.
 HV0213
 HV0213;                    North         East    Units  Estimated Accuracy
 HV0213;SPC MD       -   147,521.3     444,574.7     MT  (+/- 3 meters HH1 GPS) 
 HV0213
 HV0213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7135917215(NAD 83)
 HV0213
 HV0213                          SUPERSEDED SURVEY CONTROL
 HV0213
 HV0213  NGVD 29 (11/26/84)    6.670  (m)           21.88   (f) ADJUSTED    1 1
 HV0213
 HV0213.Superseded values are not recommended for survey control.
 HV0213
 HV0213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0213.See file dsdata.pdf to determine how the superseded data were derived.
 HV0213
 HV0213_MARKER: DR = REFERENCE MARK DISK
 HV0213_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 HV0213_SP_SET: FOUNDATION
 HV0213_STAMPING: INDIGO 2
 HV0213_MARK LOGO: CGS
 HV0213_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0213
 HV0213  HISTORY     - Date     Condition        Report By
 HV0213  HISTORY     - 1932     MONUMENTED       CGS
 HV0213  HISTORY     - 1971     GOOD             NGS
 HV0213  HISTORY     - 19981218 GOOD             USPSQD
 HV0213  HISTORY     - 20010331 MARK NOT FOUND   NGS
 HV0213
 HV0213                          STATION DESCRIPTION
 HV0213
 HV0213'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0213'0.4 MI NE FROM ANNAPOLIS.
 HV0213'ABOUT 0.4 MILE NORTHEAST ALONG STATE HIGHWAY 450 FROM THE
 HV0213'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE SEVERN RIVER AT
 HV0213'ANNAPOLIS, AT THE NORTHEAST END OF THE BRIDGE, SET IN THE TOP
 HV0213'OF THE EAST CORNER OF THE CONCRETE FOUNDATION FOR THE CONCRETE
 HV0213'MONUMENT AT THE EAST CORNER OF THE BRIDGE, 11.0 FEET SOUTHEAST
 HV0213'OF THE SOUTHEAST CURB OF THE HIGHWAY, 42.4 FEET SOUTH-SOUTHEAST
 HV0213'AND ACROSS THE HIGHWAY FROM BENCH MARK MOOD (MD. GEOD. S.), 44.7
 HV0213'FEET SOUTHEAST AND ACROSS THE HIGHWAY FROM INDIGO RM 1, AND ABOUT
 HV0213'3 1/2 FEET ABOVE THE LEVEL OF THE GROUND.
 HV0213
 HV0213                          STATION RECOVERY (1998)
 HV0213
 HV0213'RECOVERY NOTE BY US POWER SQUADRON 1998
 HV0213'RECOVERED IN GOOD CONDITION.
 HV0213
 HV0213                          STATION RECOVERY (2001)
 HV0213
 HV0213'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0213'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5836 ***********************************************************************
 HV5836  DESIGNATION -  INEZ
 HV5836  PID         -  HV5836
 HV5836  STATE/COUNTY-  MD/TALBOT
 HV5836  COUNTRY     -  US
 HV5836  USGS QUAD   -  TRAPPE (2016)
 HV5836
 HV5836                         *CURRENT SURVEY CONTROL
 HV5836  ______________________________________________________________________
 HV5836* NAD 83(1991) POSITION- 38 38 00.03677(N) 076 06 41.74730(W)   ADJUSTED
 HV5836* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5836  ______________________________________________________________________
 HV5836  GEOID HEIGHT    -        -34.854 (meters)                     GEOID18
 HV5836  LAPLACE CORR    -         -3.50  (seconds)                    DEFLEC18
 HV5836  HORZ ORDER      -  THIRD
 HV5836
 HV5836.The horizontal coordinates were established by classical geodetic methods
 HV5836.and adjusted by the National Geodetic Survey in January 1992.
 HV5836
 HV5836.The orthometric height was scaled from a topographic map.
 HV5836
 HV5836.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5836.GEOID18 height accuracy estimate available here.
 HV5836
 HV5836.Click photographs - Photos may exist for this station.
 HV5836
 HV5836.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5836
 HV5836. The following values were computed from the NAD 83(1991) position.
 HV5836
 HV5836;                    North         East     Units Scale Factor Converg.
 HV5836;SPC MD       -   107,681.281   477,350.400   MT  0.99995875   +0 33 27.3
 HV5836;SPC MD       -   353,284.34  1,566,107.10   sFT  0.99995875   +0 33 27.3
 HV5836;UTM  18      - 4,276,675.605   403,248.760   MT  0.99971527   -0 41 38.6
 HV5836
 HV5836!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5836!SPC MD       -   1.00000535  x   0.99995875  =   0.99996410
 HV5836!UTM  18      -   1.00000535  x   0.99971527  =   0.99972062
 HV5836
 HV5836_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0324876675(NAD 83)
 HV5836
 HV5836                          SUPERSEDED SURVEY CONTROL
 HV5836
 HV5836  NAD 83(1986)-  38 38 00.03347(N)    076 06 41.76398(W) AD(       ) 3
 HV5836  NAD 27      -  38 37 59.60200(N)    076 06 42.98700(W) AD(       ) 3
 HV5836  USSD        -  38 37 59.99700(N)    076 06 42.79400(W) AD(       ) 3
 HV5836
 HV5836.Superseded values are not recommended for survey control.
 HV5836
 HV5836.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5836.See file dsdata.pdf to determine how the superseded data were derived.
 HV5836
 HV5836_MARKER: H = DRILL HOLE
 HV5836_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 HV5836_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV5836
 HV5836  HISTORY     - Date     Condition        Report By
 HV5836  HISTORY     - 1910     MONUMENTED       MDSFC
 HV5836  HISTORY     - 1939     MARK NOT FOUND   CGS
 HV5836
 HV5836                          STATION DESCRIPTION
 HV5836
 HV5836'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1910 (CCY)
 HV5836'ON THE SOUTHEASTERN SHORE OF LA TRAPPE CREEK, ON SOUTHWESTERN
 HV5836'SHORE OF A SMALL COVE ABOUT 3/4 MILE NE OF CHOPTANK RIVER, ON HIGH
 HV5836'LAND IN PASTURE FIELD, ABOUT 10 FEET ABOVE HIGH WATER, 3 YARDS S
 HV5836'OF TREE-FRINGED BANK AND 125 YARDS NE OF SMALL HOUSE.  STATION IS
 HV5836'MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH
 HV5836'SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET
 HV5836'LONG, WITH TOP PROJECTING ABOUT 4 INCHES. THE LETTERS M.S.F.C. AND
 HV5836'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  SUB-SURFACE MARK IS THE
 HV5836'CENTER OF 2-INCH TILE PIPE BURIED WITH THE TOP 2 INCHES BELOW THE
 HV5836'BASE OF THE MONUMENT. DISTANCES AND BEARINGS TO VARIOUS POINTS OF
 HV5836'REFERENCE ARE AS FOLLOWS--RIGHT CHIMNEY OF HOUSE IN TREES, 1/4
 HV5836'MILE, S 2 DEG 46 MIN W.  CHIMNEY OF 1 1/2-STORY HOUSE, 125 YARDS,
 HV5836'S 63 DEG 49 MIN W. NEAR PEAK OF ABANDONED HOUSE, 125 YARDS S 80
 HV5836'DEG 3 MIN W. NAIL IN BLAZE IN 3-INCH HACKBERRY TREE, 11.11 METERS
 HV5836'(36.4 FEET), N 78 DEG 2 MIN W.  POINT OF DAIRY ROOF, 1/4 MILE, N
 HV5836'37 DEG 13 MIN W. CHIMNEY OF 1 1/2-STORY HOUSE, 1/4 MILE, N 32 DEG
 HV5836'5 MIN W.  PEAK OF ROOF OF SMALL HOUSE, 1/4 MILE, N 3 DEG 26 MIN E.
 HV5836'PEAK OF BARN, 7/8 MILE, N 10 DEG 27 MIN E.  NAIL IN BLAZE IN
 HV5836'4-INCH LOCUST TREE, 3.44 METERS (11.29 FEET), N 31 DEG 47 MIN E.
 HV5836'PEAK OF BARN, 1/8 MILE, S 16 DEG 59 MIN E.
 HV5836
 HV5836                          STATION RECOVERY (1939)
 HV5836
 HV5836'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 HV5836'STATION SEARCHED FOR BUT NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4973 ***********************************************************************
 JV4973  DESIGNATION -  ING
 JV4973  PID         -  JV4973
 JV4973  STATE/COUNTY-  MD/QUEEN ANNES
 JV4973  COUNTRY     -  US
 JV4973  USGS QUAD   -  CHESTERTOWN (2017)
 JV4973
 JV4973                         *CURRENT SURVEY CONTROL
 JV4973  ______________________________________________________________________
 JV4973* NAD 83(1991) POSITION- 39 11 28.38125(N) 076 03 53.26583(W)   ADJUSTED
 JV4973* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV4973  ______________________________________________________________________
 JV4973  GEOID HEIGHT    -        -33.471 (meters)                     GEOID18
 JV4973  LAPLACE CORR    -         -2.35  (seconds)                    DEFLEC18
 JV4973  HORZ ORDER      -  THIRD
 JV4973
 JV4973.The horizontal coordinates were established by classical geodetic methods
 JV4973.and adjusted by the National Geodetic Survey in January 1992.
 JV4973
 JV4973.The orthometric height was scaled from a topographic map.
 JV4973
 JV4973.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4973.GEOID18 height accuracy estimate available here.
 JV4973
 JV4973.Click photographs - Photos may exist for this station.
 JV4973
 JV4973.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4973
 JV4973. The following values were computed from the NAD 83(1991) position.
 JV4973
 JV4973;                    North         East     Units Scale Factor Converg.
 JV4973;SPC MD       -   169,647.540   480,790.603   MT  0.99996496   +0 35 13.1
 JV4973;SPC MD       -   556,585.30  1,577,393.84   sFT  0.99996496   +0 35 13.1
 JV4973;UTM  18      - 4,338,536.463   408,045.050   MT  0.99970411   -0 40 22.5
 JV4973
 JV4973!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4973!SPC MD       -   1.00000513  x   0.99996496  =   0.99997009
 JV4973!UTM  18      -   1.00000513  x   0.99970411  =   0.99970924
 JV4973
 JV4973:                Primary Azimuth Mark                     Grid Az
 JV4973:SPC MD       -  RADCLIFF                                 342 58 13.8
 JV4973:UTM  18      -  RADCLIFF                                 344 13 49.4
 JV4973
 JV4973_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0804538536(NAD 83)
 JV4973
 JV4973|---------------------------------------------------------------------|
 JV4973| PID    Reference Object                     Distance      Geod. Az  |
 JV4973|                                                           dddmmss.s |
 JV4973| JV4974 SKIPPER                             312.381 METERS 00100     |
 JV4973| JV4976 SKIPPERS WINDMILL                   479.047 METERS 0703556.0 |
 JV4973| JV4997 RADCLIFF                            APPROX. 0.9 KM 3433326.9 |
 JV4973| JV4991 CHESTERTOWN M P CHURCH SPIRE        APPROX. 2.2 KM 3502739.7 |
 JV4973| JV4999 CHESTERTOWN ME CHURCH SPIRE         APPROX. 2.2 KM 3522211.8 |
 JV4973| JV4995 CHESTERTOWN WASH COLL CUP FLAG      APPROX. 2.9 KM 3545948.8 |
 JV4973|---------------------------------------------------------------------|
 JV4973
 JV4973                          SUPERSEDED SURVEY CONTROL
 JV4973
 JV4973  NAD 83(1986)-  39 11 28.37339(N)    076 03 53.27786(W) AD(       ) 3
 JV4973  NAD 27      -  39 11 27.98100(N)    076 03 54.46300(W) AD(       ) 3
 JV4973  USSD        -  39 11 28.42500(N)    076 03 54.24000(W) AD(       ) 3
 JV4973
 JV4973.Superseded values are not recommended for survey control.
 JV4973
 JV4973.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4973.See file dsdata.pdf to determine how the superseded data were derived.
 JV4973
 JV4973_MARKER: N = NAIL
 JV4973_SETTING: 21 = SET IN CONCRETE IN A CLAY TILE PIPE
 JV4973_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4973
 JV4973  HISTORY     - Date     Condition        Report By
 JV4973  HISTORY     - 1909     MONUMENTED       CGS
 JV4973  HISTORY     - 1939     GOOD             CGS
 JV4973
 JV4973                          STATION DESCRIPTION
 JV4973
 JV4973'DESCRIBED BY COAST AND GEODETIC SURVEY 1909 (SF)
 JV4973'STATION IS ON THE EASTERN SHORE OF CHESTER RIVER, NEAR AN OLD
 JV4973'DUCK BLIND ON A PEBBLE BEACH, ABOUT 4 METERS BACK FROM HIGH-WATER
 JV4973'LINE, WITH A BLUFF ABOUT 5 FEET HIGH, 10 METERS INSHORE FROM THE
 JV4973'STATION.  SCATTERED CEDAR TREES LINE THE BLUFF.
 JV4973'
 JV4973'THE STATION IS MARKED BY A SQUARE WHITE QUART BOTTLE BURIED 3
 JV4973'FEET, AND A NAIL IN CONCRETE SURROUNDED BY THE LETTERS U.S.C. AND
 JV4973'G.S. IN THE TOP OF A 4-INCH DRAINTILE AT THE SURFACE OF THE
 JV4973'GROUND.  THE REFERENCE MARK IS A BURIED QUART BOTTLE AND A NAIL
 JV4973'IN CONCRETE IN THE TOP OF A 3-INCH DRAINTILE AT THE SURFACE OF
 JV4973'THE GROUND.  REFERENCE MARK IS 8.485 METERS (27.84 FEET) FROM
 JV4973'THE STATION N 74 DEG 46 MIN E.
 JV4973
 JV4973                          STATION RECOVERY (1939)
 JV4973
 JV4973'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (LWS)
 JV4973'STATION RECOVERED.  STATION FOUND WITH TOP PORTION BROKEN UP BUT
 JV4973'THE TILE APPEARED TO BE INTACT AND UNDISTURBED.  REFERENCE MARK
 JV4973'COULD NOT BE FOUND.
 JV4973'
 JV4973'STATION IS ON THE EASTERN SHORE OF CHESTER RIVER ABOUT 1 MILE
 JV4973'SW OF CHESTER RIVER BRIDGE ON THE EXTREME END OF PRIMROSE POINT,
 JV4973'AND IS NOW AT THE HIGH-WATER LINE AND 4-1/2 METERS SW OF A 20-FOOT
 JV4973'CEDAR TREE, AND ABOUT 178 METERS N OF AN E-W FENCE AND TREE LINE.
 JV4973'
 JV4973'STATION IS DUE E (MAGNETIC) OF THE CHESTERTOWN GOLF CLUBHOUSE
 JV4973'AND DUE S (MAGNETIC) OF THE CHESTERTOWN MUNICIPAL WATER TANK AND
 JV4973'DUE N OF A PROMINENT EXPOSED BLUFF TO THE N.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1596 ***********************************************************************
 HU1596  DESIGNATION -  INGRAYA MSFC 1907
 HU1596  PID         -  HU1596
 HU1596  STATE/COUNTY-  MD/WORCESTER
 HU1596  COUNTRY     -  US
 HU1596  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1596
 HU1596                         *CURRENT SURVEY CONTROL
 HU1596  ______________________________________________________________________
 HU1596* NAD 83(1991) POSITION- 38 14 12.13102(N) 075 09 58.75786(W)   ADJUSTED
 HU1596* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HU1596  ______________________________________________________________________
 HU1596  GEOID HEIGHT    -        -36.166 (meters)                     GEOID18
 HU1596  LAPLACE CORR    -         -0.10  (seconds)                    DEFLEC18
 HU1596  HORZ ORDER      -  THIRD
 HU1596
 HU1596.The horizontal coordinates were established by classical geodetic methods
 HU1596.and adjusted by the National Geodetic Survey in January 1992.
 HU1596
 HU1596.The orthometric height was scaled from a topographic map.
 HU1596
 HU1596.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1596.GEOID18 height accuracy estimate available here.
 HU1596
 HU1596.Click photographs - Photos may exist for this station.
 HU1596
 HU1596.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1596
 HU1596. The following values were computed from the NAD 83(1991) position.
 HU1596
 HU1596;                    North         East     Units Scale Factor Converg.
 HU1596;SPC MD       -    64,889.048   560,528.503   MT  1.00001161   +1 09 03.2
 HU1596;SPC MD       -   212,890.15  1,839,000.60   sFT  1.00001161   +1 09 03.2
 HU1596;UTM  18      - 4,232,091.322   485,444.462   MT  0.99960261   -0 06 10.6
 HU1596
 HU1596!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1596!SPC MD       -   1.00000524  x   1.00001161  =   1.00001685
 HU1596!UTM  18      -   1.00000524  x   0.99960261  =   0.99960785
 HU1596
 HU1596:                Primary Azimuth Mark                     Grid Az
 HU1596:SPC MD       -  NORTH BEACH LSS                          166 24 08.0
 HU1596:UTM  18      -  NORTH BEACH LSS                          167 39 21.8
 HU1596
 HU1596_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8544432091(NAD 83)
 HU1596
 HU1596|---------------------------------------------------------------------|
 HU1596| PID    Reference Object                     Distance      Geod. Az  |
 HU1596|                                                           dddmmss.s |
 HU1596| HU1597 NORTH BEACH LSS                     APPROX. 4.3 KM 1673311.2 |
 HU1596|---------------------------------------------------------------------|
 HU1596
 HU1596                          SUPERSEDED SURVEY CONTROL
 HU1596
 HU1596  NAD 83(1986)-  38 14 12.11587(N)    075 09 58.79082(W) AD(       ) 3
 HU1596  NAD 27      -  38 14 11.69480(N)    075 10 00.10758(W) AD(       ) 3
 HU1596  USSD        -  38 14 11.85400(N)    075 09 59.90000(W) AD(       ) 3
 HU1596
 HU1596.Superseded values are not recommended for survey control.
 HU1596
 HU1596.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1596.See file dsdata.pdf to determine how the superseded data were derived.
 HU1596
 HU1596_MARKER: N = NAIL
 HU1596_SETTING: 0 = UNSPECIFIED SETTING
 HU1596_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HU1596
 HU1596  HISTORY     - Date     Condition        Report By
 HU1596  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1596  HISTORY     - 1933     MARK NOT FOUND   CGS
 HU1596  HISTORY     - 1962     MARK NOT FOUND   CGS
 HU1596
 HU1596                          STATION DESCRIPTION
 HU1596
 HU1596'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1596'ON THE WESTERN SHORE OF SINEPUXENT BAY, ON THE EASTERN SIDE OF
 HU1596'SINEPUXENT NECK, ON POINT KNOWN LOCALLY AS INDIAN GRAVEYARD POINT,
 HU1596'ABOUT 5 FEET ABOVE HIGH WATER, 55 YARDS N OF NEAREST SHORE, 180
 HU1596'YARDS W OF EXTREME END OF POINT NEAR BUSHES, AND 80 YARDS E OF
 HU1596'WHERE A DITCH COMING FROM THE NORTHWARD TURNS TO WESTWARD.  TWO
 HU1596'TREES, EACH ABOUT 75 YARDS DISTANT, ARE LOCATED ON THE LINE OF
 HU1596'THE DITCH.  STATION MARK IS CENTER OF STANDARD CEMENT MONUMENT OF
 HU1596'THE MARYLAND SHELL FISH SURVEY WHICH IS MADE OF CONCRETE 2
 HU1596'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1596'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1596'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1596'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1596'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1596'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1596'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1596'THE LOCATION OF THE STATION.
 HU1596'MARK IS BURIED WITH
 HU1596'ITS TOP 14 INCHES BELOW THE SURFACE OF THE GROUND.
 HU1596'
 HU1596'DISTANCES AND AZIMUTHS TO VARIOUS POINTS OF REFERENCE ARE AS
 HU1596'FOLLOWS--TANGENT TO GREEN POINT, 1/2 MILE, S 29 DEG 52 MIN W.  CORNER
 HU1596'OF DITCH, 80 YARDS,  83 DEG 17 MIN W.  TREE, 8 INCHES DIAMETER, 75
 HU1596'YARDS, N 74 DEG 07 MIN W.  TREE, 8 INCHES DIAMETER, 80 YARDS,
 HU1596'N 30 DEG 03 MIN W.  NEAR CHIMNEY OF 2 1/2-STORY HOUSE, 3/4 MILE,
 HU1596'N 24 DEG 27 MIN E.
 HU1596
 HU1596                          STATION RECOVERY (1933)
 HU1596
 HU1596'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (IER)
 HU1596'STATION LOST.  A 3-HOUR SEARCH WAS MADE.  FURTHER SEARCH USELESS.
 HU1596
 HU1596                          STATION RECOVERY (1962)
 HU1596
 HU1596'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1596'THE STATION WAS SEARCHED FOR BUT DUE TO THE LACK OF ANY REMAINING
 HU1596'REFERENCES AND THE MARK BEING 14 INCHES UNDER GROUND THE MARK WAS
 HU1596'NOT RECOVERED.
 HU1596'
 HU1596'STATION LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6589 ***********************************************************************
 HV6589  DESIGNATION -  INIGOES
 HV6589  PID         -  HV6589
 HV6589  STATE/COUNTY-  MD/ST MARYS
 HV6589  COUNTRY     -  US
 HV6589  USGS QUAD   -  SAINT MARYS CITY (2016)
 HV6589
 HV6589                         *CURRENT SURVEY CONTROL
 HV6589  ______________________________________________________________________
 HV6589* NAD 83(1993) POSITION- 38 09 34.09745(N) 076 26 17.28098(W)   ADJUSTED
 HV6589* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6589  ______________________________________________________________________
 HV6589  GEOID HEIGHT    -        -34.786 (meters)                     GEOID18
 HV6589  LAPLACE CORR    -         -6.07  (seconds)                    DEFLEC18
 HV6589  HORZ ORDER      -  THIRD
 HV6589
 HV6589.The horizontal coordinates were established by classical geodetic methods
 HV6589.and adjusted by the National Geodetic Survey in November 1994.
 HV6589
 HV6589.The orthometric height was scaled from a topographic map.
 HV6589
 HV6589.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6589.GEOID18 height accuracy estimate available here.
 HV6589
 HV6589.Click photographs - Photos may exist for this station.
 HV6589
 HV6589.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6589
 HV6589. The following values were computed from the NAD 83(1993) position.
 HV6589
 HV6589;                    North         East     Units Scale Factor Converg.
 HV6589;SPC MD       -    54,855.416   449,244.089   MT  1.00002742   +0 21 09.5
 HV6589;SPC MD       -   179,971.48  1,473,894.98   sFT  1.00002742   +0 21 09.5
 HV6589;UTM  18      - 4,224,486.038   374,006.465   MT  0.99979551   -0 53 19.2
 HV6589
 HV6589!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6589!SPC MD       -   1.00000550  x   1.00002742  =   1.00003292
 HV6589!UTM  18      -   1.00000550  x   0.99979551  =   0.99980101
 HV6589
 HV6589:                Primary Azimuth Mark                     Grid Az
 HV6589:SPC MD       -  ROD PRIESTS HOUSE 1908                   191 31 54.3
 HV6589:UTM  18      -  ROD PRIESTS HOUSE 1908                   192 46 23.0
 HV6589
 HV6589_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH7400624486(NAD 83)
 HV6589
 HV6589|---------------------------------------------------------------------|
 HV6589| PID    Reference Object                     Distance      Geod. Az  |
 HV6589|                                                           dddmmss.s |
 HV6589| CX2929 INIGOES RM                           50.870 METERS 03925     |
 HV6589| HV6574 ROD PRIESTS HOUSE 1908              APPROX. 1.0 KM 1915303.8 |
 HV6589|---------------------------------------------------------------------|
 HV6589
 HV6589                          SUPERSEDED SURVEY CONTROL
 HV6589
 HV6589  NAD 83(1991)-  38 09 34.09650(N)    076 26 17.28404(W) AD(       ) 3
 HV6589  NAD 83(1986)-  38 09 34.09741(N)    076 26 17.29748(W) AD(       ) 3
 HV6589  NAD 27      -  38 09 33.70400(N)    076 26 18.51800(W) AD(       ) 3
 HV6589  USSD        -  38 09 34.08600(N)    076 26 18.22700(W) AD(       ) 3
 HV6589
 HV6589.Superseded values are not recommended for survey control.
 HV6589
 HV6589.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6589.See file dsdata.pdf to determine how the superseded data were derived.
 HV6589
 HV6589_MARKER: Z = SEE DESCRIPTION
 HV6589_SETTING: 0 = UNSPECIFIED SETTING
 HV6589
 HV6589  HISTORY     - Date     Condition        Report By
 HV6589  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6589  HISTORY     - 1958     SEE DESCRIPTION  CGS
 HV6589  HISTORY     - 1976     MARK NOT FOUND   MDDNR
 HV6589
 HV6589                          STATION DESCRIPTION
 HV6589
 HV6589'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6589'STATION IS ON NORTHERN SIDE OF ENTRANCE TO ST. INIGOES CREEK,
 HV6589'ABOUT 5/8 MILE N OF PRIESTS POINT, AND 5/8 MILE E OF WINDMILL
 HV6589'POINT.  STATION IS OFFSHORE IN ABOUT 4 FEET OF WATER, 1-1/2
 HV6589'FEET SE OF BOAT LANDING, AND 45 YARDS SW OF SHORE.
 HV6589'
 HV6589'STATION MARK IS A 3-INCH SQUARE STUB WITH TOP ABOUT 2 FEET
 HV6589'ABOVE SURFACE OF WATER.
 HV6589'
 HV6589'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A
 HV6589'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 HV6589'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 HV6589'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 HV6589'IS ON TOP OF BANK ABOUT 15 FEET HIGH AND IS 50.87 METERS (166.9
 HV6589'FEET) FROM STATION N 39 DEG 24 MIN E.  DISTANCES AND
 HV6589'TO OTHER POINTS OF REFERENCE ARE AS FOLLOWS--LEFT
 HV6589'TANGENT OF LEFT CHIMNEY OF BRICK HOUSE, 1-3/4 MILES, S 60 DEG 56
 HV6589'MIN W.  LEFT PEAK OF ROOF OF CARRIAGE HOUSE, 7/8 MILE, N 81 DEG
 HV6589'03 MIN W.  RIGHT CHIMNEY OF COPPAGES HOUSE, 1-3/8 MILES, N 61
 HV6589'DEG 41 MIN W.  CHIMNEY OF MC KAYS HOUSE, 1-3/4 MILES, N 28 DEG
 HV6589'11 MIN W.  CENTER OF RIGHT TOWER OF KENNEDYS HOUSE, 400
 HV6589'YARDS, N 00 DEG 00 MIN W.  LEFT CHIMNEY OF TYLERS HOUSE, 7/8
 HV6589'MILE, S 80 DEG 25 MIN E.  LARGE CHIMNEY OF RALEYS HOUSE, 3/8
 HV6589'MILE, S 17 DEG 29 MIN E.
 HV6589
 HV6589                          STATION RECOVERY (1958)
 HV6589
 HV6589'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV6589'THE STATION IS DESTROYED.  THE BOAT LANDING IN THE DESCRIPTION
 HV6589'NO LONGER EXISTS.
 HV6589'
 HV6589'THE RM WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL DESCRIPTION
 HV6589'IS INADEQUATE.  A COMPLETE NEW DESCRIPTION FOLLOWS--
 HV6589'
 HV6589'THE RM IS LOCATED ON THE PROPERTY OF MR. GEORGE M. QUIRK AT ROSE
 HV6589'CROFT POINT.  RM IS APPROXIMATELY 390 FEET SOUTH OF A HOUSE, 8
 HV6589'FEET NORTH OF THE EDGE OF A BLUFF, AND 3 FEET SW OF A TEN INCH
 HV6589'LOCUST TREE.  RM IS A STANDARD CONCRETE M.S.F.C. MONUMENT, 2
 HV6589'FEET LONG AND 8 INCHES SQUARE.  A TRIANGLE AND THE LETTERS
 HV6589'U.S.C.S. AND M.S.F.C. ARE STAMPED IN ITS TOP.
 HV6589
 HV6589                          STATION RECOVERY (1976)
 HV6589
 HV6589'RECOVERY NOTE BY MD DEPT OF NAT RES 1976
 HV6589'STATION REPORTED LOST.  REFERENCE MARK RECOVERED AS DESCRIBED ON
 HV6589'TOP OF BLUFF FLUSH WITH SURFACE OF LAWN.  REFERENCE MARK IS
 HV6589'LOCATED ABOUT 17 FEET NORTHWEST OF SOUTHWEST CORNER OF BRICK
 HV6589'FOUNDATION, 17.3 FEET NORTHEAST OF SQUARE CONCRETE BLOCK ON
 HV6589'EDGE OF BLUFF, AND 54 FEET EAST OF EDGE OF HEDGE.  THE LOCUST
 HV6589'TREE HAS HAD THE TOP BROKEN OUT OF IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1506 ***********************************************************************
 HU1506  DESIGNATION -  INKQUILL MSFC 1908
 HU1506  PID         -  HU1506
 HU1506  STATE/COUNTY-  MD/WORCESTER
 HU1506  COUNTRY     -  US
 HU1506  USGS QUAD   -  OCEAN CITY (2016)
 HU1506
 HU1506                         *CURRENT SURVEY CONTROL
 HU1506  ______________________________________________________________________
 HU1506* NAD 83(1991) POSITION- 38 18 13.72964(N) 075 07 02.17791(W)   ADJUSTED
 HU1506* NAVD 88 ORTHO HEIGHT -     2.    (meters)        7.    (feet) SCALED
 HU1506  ______________________________________________________________________
 HU1506  GEOID HEIGHT    -        -36.087 (meters)                     GEOID18
 HU1506  LAPLACE CORR    -         -0.49  (seconds)                    DEFLEC18
 HU1506  HORZ ORDER      -  THIRD
 HU1506
 HU1506.The horizontal coordinates were established by classical geodetic methods
 HU1506.and adjusted by the National Geodetic Survey in January 1992.
 HU1506
 HU1506.The orthometric height was scaled from a topographic map.
 HU1506
 HU1506.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1506.GEOID18 height accuracy estimate available here.
 HU1506
 HU1506.Click photographs - Photos may exist for this station.
 HU1506
 HU1506.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1506
 HU1506. The following values were computed from the NAD 83(1991) position.
 HU1506
 HU1506;                    North         East     Units Scale Factor Converg.
 HU1506;SPC MD       -    72,424.309   564,668.334   MT  0.99999934   +1 10 54.0
 HU1506;SPC MD       -   237,612.09  1,852,582.69   sFT  0.99999934   +1 10 54.0
 HU1506;UTM  18      - 4,239,531.169   489,746.484   MT  0.99960129   -0 04 21.7
 HU1506
 HU1506!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1506!SPC MD       -   1.00000539  x   0.99999934  =   1.00000473
 HU1506!UTM  18      -   1.00000539  x   0.99960129  =   0.99960667
 HU1506
 HU1506:                Primary Azimuth Mark                     Grid Az
 HU1506:SPC MD       -  BEACH                                    155 56 17.3
 HU1506:UTM  18      -  BEACH                                    157 11 33.0
 HU1506
 HU1506_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8974639531(NAD 83)
 HU1506
 HU1506|---------------------------------------------------------------------|
 HU1506| PID    Reference Object                     Distance      Geod. Az  |
 HU1506|                                                           dddmmss.s |
 HU1506| HU1501 BEACH                               APPROX. 1.8 KM 1570711.3 |
 HU1506|---------------------------------------------------------------------|
 HU1506
 HU1506                          SUPERSEDED SURVEY CONTROL
 HU1506
 HU1506  NAD 83(1986)-  38 18 13.71294(N)    075 07 02.20805(W) AD(       ) 3
 HU1506  NAD 27      -  38 18 13.29789(N)    075 07 03.53774(W) AD(       ) 3
 HU1506  USSD        -  38 18 13.47100(N)    075 07 03.32900(W) AD(       ) 3
 HU1506
 HU1506.Superseded values are not recommended for survey control.
 HU1506
 HU1506.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1506.See file dsdata.pdf to determine how the superseded data were derived.
 HU1506
 HU1506_MARKER: H = DRILL HOLE
 HU1506_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1506_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1506+STABILITY: SURFACE MOTION
 HU1506
 HU1506  HISTORY     - Date     Condition        Report By
 HU1506  HISTORY     - 1908     MONUMENTED       MDSFC
 HU1506  HISTORY     - 1933     MARK NOT FOUND   CGS
 HU1506
 HU1506                          STATION DESCRIPTION
 HU1506
 HU1506'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HU1506'ON THE WESTERN SHORE OF SINEPUXENT BAY, NEAR COFFINS POINT, ABOUT
 HU1506'2-3/8 MILES SW OF OCEAN CITY, ON TOP OF A SHELL KNOLL ABOUT 10
 HU1506'FEET ABOVE HIGH-WATER MARK, 30 YARDS W OF SHORE, 100 YARDS FROM
 HU1506'CORNER OF FENCE NEAR KELLEYS HOUSE, 150 YARDS FROM NEAR CORNER OF
 HU1506'KELLEYS HOUSE, AND ABOUT 55 YARDS SE OF DITCH.  MARKED BY CENTER
 HU1506'OF STANDARD CEMENT MONUMENT OF THE MARYLAND SHELL FISH SURVEY.
 HU1506'
 HU1506'STATION IS MARKED BY THE CENTER OF STANDARD CEMENT MONUMENT
 HU1506'OF THE MARYLAND SHELL FISH SURVEY WHICH IS MADE OF CONCRETE 2
 HU1506'FEET LONG AND 8 INCHES SQUARE AT THE TOP AND BOTTOM.  ITS TOP
 HU1506'SHOWS A CENTER HOLE SURROUNDED BY A TRIANGLE, WITH THE
 HU1506'COUNTER-SUNK LETTERS M.S.F.C. ARRANGED AROUND THE VERTEX, AND THE
 HU1506'LETTERS U.S.C.S. UNDERNEATH THE BASE OF THE
 HU1506'TRIANGLE.  THE CENTER HOLE IS AT THE CENTER OF THE MONUMENT,
 HU1506'AND IF THE MARKING WAS BROKEN OFF WITHOUT DISTURBING THE
 HU1506'BOTTOM, THE CENTER OF THE SQUARE SECTION MAY BE USED AS
 HU1506'THE LOCATION OF THE STATION.
 HU1506'THE MONUMENT IS BURIED WITH TOP 12 INCHES BELOW
 HU1506'THE SURFACE OF THE GROUND.
 HU1506'
 HU1506'DISTANCES AND AZIMUTHS TO POINTS OF REFERENCE ARE AS
 HU1506'FOLLOWS--CORNER OF FENCE, 100 YARDS, S 18 DEG 04 MI WN.  NEAR CHIMNEY
 HU1506'OF KELLEYS HOUSE, 150 YARDS, S 24 DEG 03 MIN W.  CHIMNEY OF LARGE
 HU1506'FOUR-SIDED ROOF, 1-1/2 MILES, S 55 DEG 02 MIN W.  BAKERS WINDMILL,
 HU1506'1/2 MILE, N 8 DEG 41 MIN W.  CHIMNEY OF BUFFINGTONS HOUSE, 3/4
 HU1506'MILE, N 17 DEG 26 MIN E.  CROPPERS ICE-PLANT STACKS, 2 MILES,
 HU1506'N 43 DEG 31 MIN E.  TANGENT OF LAND, 170 YARDS, N 45 DEG 37 MIN E.
 HU1506'TANGENT OF LAND 40-50 YARDS, S 70 DEG 09 MIN E.  LEFT TANGENT OF
 HU1506'FENCE, 125 YARDS, S 3 DEG 21 MIN E.
 HU1506
 HU1506                          STATION RECOVERY (1933)
 HU1506
 HU1506'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (IER)
 HU1506'STATION LOST.  A THOROUGH SEARCH WAS MADE BUT STATION COULD NOT BE
 HU1506'FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5047 ***********************************************************************
 JV5047  DESIGNATION -  INN
 JV5047  PID         -  JV5047
 JV5047  STATE/COUNTY-  MD/KENT
 JV5047  COUNTRY     -  US
 JV5047  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5047
 JV5047                         *CURRENT SURVEY CONTROL
 JV5047  ______________________________________________________________________
 JV5047* NAD 83(1991) POSITION- 39 05 26.44582(N) 076 11 46.59195(W)   ADJUSTED
 JV5047* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5047  ______________________________________________________________________
 JV5047  GEOID HEIGHT    -        -33.492 (meters)                     GEOID18
 JV5047  LAPLACE CORR    -         -2.10  (seconds)                    DEFLEC18
 JV5047  HORZ ORDER      -  THIRD
 JV5047
 JV5047.The horizontal coordinates were established by classical geodetic methods
 JV5047.and adjusted by the National Geodetic Survey in January 1992.
 JV5047
 JV5047.The orthometric height was scaled from a topographic map.
 JV5047
 JV5047.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5047.GEOID18 height accuracy estimate available here.
 JV5047
 JV5047.Click photographs - Photos may exist for this station.
 JV5047
 JV5047.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5047
 JV5047. The following values were computed from the NAD 83(1991) position.
 JV5047
 JV5047;                    North         East     Units Scale Factor Converg.
 JV5047;SPC MD       -   158,378.728   469,530.905   MT  0.99995686   +0 30 16.0
 JV5047;SPC MD       -   519,614.21  1,540,452.64   sFT  0.99995686   +0 30 16.0
 JV5047;UTM  18      - 4,327,520.522   396,543.197   MT  0.99973179   -0 45 15.8
 JV5047
 JV5047!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5047!SPC MD       -   1.00000514  x   0.99995686  =   0.99996200
 JV5047!UTM  18      -   1.00000514  x   0.99973179  =   0.99973692
 JV5047
 JV5047:                Primary Azimuth Mark                     Grid Az
 JV5047:SPC MD       -  HOLTON POINT                             106 40 05.0
 JV5047:UTM  18      -  HOLTON POINT                             107 55 36.8
 JV5047
 JV5047_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9654327520(NAD 83)
 JV5047
 JV5047|---------------------------------------------------------------------|
 JV5047| PID    Reference Object                     Distance      Geod. Az  |
 JV5047|                                                           dddmmss.s |
 JV5047| JV5036 HOLTON POINT                        APPROX. 4.2 KM 1071021.0 |
 JV5047| JV5081 TRAY                                199.322 METERS 31450     |
 JV5047|---------------------------------------------------------------------|
 JV5047
 JV5047                          SUPERSEDED SURVEY CONTROL
 JV5047
 JV5047  NAD 83(1986)-  39 05 26.44043(N)    076 11 46.60374(W) AD(       ) 3
 JV5047  NAD 27      -  39 05 26.03900(N)    076 11 47.76000(W) AD(       ) 3
 JV5047  USSD        -  39 05 26.42900(N)    076 11 47.59900(W) AD(       ) 3
 JV5047
 JV5047.Superseded values are not recommended for survey control.
 JV5047
 JV5047.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5047.See file dsdata.pdf to determine how the superseded data were derived.
 JV5047
 JV5047_MARKER: H = DRILL HOLE
 JV5047_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5047_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5047+STABILITY: SURFACE MOTION
 JV5047
 JV5047  HISTORY     - Date     Condition        Report By
 JV5047  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5047  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5047
 JV5047                          STATION DESCRIPTION
 JV5047
 JV5047'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5047'STATION IS ON THE EASTERN SHORE OF GRAYS INN CREEK, ABOUT 1/8 MILE
 JV5047'NW OF CHESTER RIVER AND 1/2 MILE SE OF ISLAND POINT, IN A PEACH
 JV5047'ORCHARD, ABOUT 4 FEET ABOVE HIGH WATER, AND 25 YARDS NE OF SHORE.
 JV5047'
 JV5047'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5047'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5047'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5047'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5047'POST.  SUBSURFACE MARK IS CENTER OF 2-INCH DRAINTILE PIPE, BURIED
 JV5047'WITH THE TOP 2 INCHES BELOW THE BASE OF THE MONUMENT.
 JV5047'
 JV5047'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5047'FOLLOWS--E GABLE OF SWATSKAS BARN, 1-1/4 MILES, S 28 DEG 29 MIN W.  E
 JV5047'CHIMNEY OF HOUSE, 1/2 MILE, S 46 DEG 12 MIN W.  E GABLE OF HARRIS
 JV5047'HOUSE, 5/8 MILE, S 78 DEG 03 MIN W.  E GABLE OF SMALL HOUSE, 5/8 MILE,
 JV5047'N 77 DEG 35 MIN W. NAIL IN BLAZE IN 8-INCH PEACH TREE, 11.71 METERS
 JV5047'(38.4 FEET), N 00 DEG 08 MIN W. SW CORNER OF EARLE BATHHOUSE, 3
 JV5047'MILES, S 73 DEG 22 MIN E. NAIL IN BLAZE IN 30-INCH SYCAMORE TREE,
 JV5047'4.53 METERS (14.86 FEET), S 59 DEG 26 MIN E. N CUPOLA OF BARN, 2-1/2
 JV5047'MILES, S 33 DEG 53 MIN E.
 JV5047
 JV5047                          STATION RECOVERY (1941)
 JV5047
 JV5047'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5047'SEARCHED FOR BUT NOT FOUND.  PEACH ORCHARD GONE.  NO SIGN OF
 JV5047'REFERENCE TREES.  RECOMMEND THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6780 ***********************************************************************
 JV6780  DESIGNATION -  INTERSTATE
 JV6780  PID         -  JV6780
 JV6780  STATE/COUNTY-  MD/HARFORD
 JV6780  COUNTRY     -  US
 JV6780  USGS QUAD   -  EDGEWOOD (2016)
 JV6780
 JV6780                         *CURRENT SURVEY CONTROL
 JV6780  ______________________________________________________________________
 JV6780* NAD 83(2011) POSITION- 39 28 32.57974(N) 076 16 16.65500(W)   ADJUSTED
 JV6780* NAD 83(2011) ELLIP HT-   -20.048 (meters)        (06/27/12)   ADJUSTED
 JV6780* NAD 83(2011) EPOCH   -  2010.00
 JV6780* NAVD 88 ORTHO HEIGHT -    13.0   (meters)       43.    (feet) GPS OBS
 JV6780  ______________________________________________________________________
 JV6780  NAVD 88 orthometric height was determined with geoid model    GEOID93
 JV6780  GEOID HEIGHT    -        -33.330 (meters)                     GEOID93
 JV6780  GEOID HEIGHT    -        -33.065 (meters)                     GEOID18
 JV6780  NAD 83(2011) X  -  1,169,989.145 (meters)                     COMP
 JV6780  NAD 83(2011) Y  - -4,789,059.151 (meters)                     COMP
 JV6780  NAD 83(2011) Z  -  4,033,210.064 (meters)                     COMP
 JV6780  LAPLACE CORR    -         -2.44  (seconds)                    DEFLEC18
 JV6780
 JV6780  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6780  Standards:
 JV6780         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6780            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6780  -------------------------------------------------------------------
 JV6780  NETWORK    0.97   1.86           0.42   0.36   0.95      0.27631848
 JV6780  -------------------------------------------------------------------
 JV6780  Click here for local accuracies and other accuracy information.
 JV6780
 JV6780.The horizontal coordinates were established by GPS observations
 JV6780.and adjusted by the National Geodetic Survey in June 2012.
 JV6780
 JV6780.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6780.been affixed to the stable North American tectonic plate. See 
 JV6780.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6780
 JV6780.The horizontal coordinates are valid at the epoch date displayed above
 JV6780.which is a decimal equivalence of Year/Month/Day.
 JV6780
 JV6780.The orthometric height was determined by GPS observations and a
 JV6780.high-resolution geoid model.
 JV6780
 JV6780.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6780.GEOID18 height accuracy estimate available here.
 JV6780
 JV6780.Click photographs - Photos may exist for this station.
 JV6780
 JV6780.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6780
 JV6780.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6780
 JV6780.The ellipsoidal height was determined by GPS observations
 JV6780.and is referenced to NAD 83.
 JV6780
 JV6780. The following values were computed from the NAD 83(2011) position.
 JV6780
 JV6780;                    North         East     Units Scale Factor Converg.
 JV6780;SPC MD       -   201,069.083   462,700.003   MT  1.00000460   +0 27 26.5
 JV6780;SPC MD       -   659,674.15  1,518,041.59   sFT  1.00000460   +0 27 26.5
 JV6780;UTM  18      - 4,370,340.812   390,655.711   MT  0.99974720   -0 48 29.9
 JV6780
 JV6780!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6780!SPC MD       -   1.00000315  x   1.00000460  =   1.00000775
 JV6780!UTM  18      -   1.00000315  x   0.99974720  =   0.99975034
 JV6780
 JV6780:                Primary Azimuth Mark                     Grid Az
 JV6780:SPC MD       -  INTERSTATE AZ MK                         224 08 14.0
 JV6780:UTM  18      -  INTERSTATE AZ MK                         225 24 10.4
 JV6780
 JV6780_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9065570340(NAD 83)
 JV6780
 JV6780|---------------------------------------------------------------------|
 JV6780| PID    Reference Object                     Distance      Geod. Az  |
 JV6780|                                                           dddmmss.s |
 JV6780| JV6781 INTERSTATE AZ MK                    APPROX. 0.9 KM 2243540.5 |
 JV6780|---------------------------------------------------------------------|
 JV6780
 JV6780                          SUPERSEDED SURVEY CONTROL
 JV6780
 JV6780  NAD 83(2007)-  39 28 32.57989(N)    076 16 16.65570(W) AD(2002.00) 0
 JV6780  ELLIP H (02/10/07)  -20.030  (m)                       GP(2002.00)    
 JV6780  ELLIP H (08/30/02)  -20.033  (m)                       GP(       ) 4 2
 JV6780  NAD 83(1991)-  39 28 32.57938(N)    076 16 16.65592(W) AD(       ) 1
 JV6780  ELLIP H (01/27/92)  -20.068  (m)                       GP(       ) 4 1
 JV6780  NAD 83(1986)-  39 28 32.57392(N)    076 16 16.66292(W) AD(       ) 1
 JV6780  NGVD 29 (06/18/91)   13.3    (m)  UNKNOWN  model used  GPS OBS        
 JV6780
 JV6780.Superseded values are not recommended for survey control.
 JV6780
 JV6780.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6780.See file dsdata.pdf to determine how the superseded data were derived.
 JV6780
 JV6780_MARKER: DD = SURVEY DISK
 JV6780_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6780_STAMPING: 131 INTERSTATE 1989
 JV6780_MARK LOGO: MD-025
 JV6780_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6780_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6780+STABILITY: SURFACE MOTION
 JV6780_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6780+SATELLITE: SATELLITE OBSERVATIONS - December 09, 1993
 JV6780
 JV6780  HISTORY     - Date     Condition        Report By
 JV6780  HISTORY     - 1989     MONUMENTED       RDA
 JV6780  HISTORY     - 19931209 GOOD             GEOMET
 JV6780
 JV6780                          STATION DESCRIPTION
 JV6780
 JV6780'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6780'THE STATION IS LOCATED IN SOUTH CENTRAL HARFORD COUNTY, MARYLAND IN
 JV6780'THE MEDIAN OF U.S. HIGHWAY 95 ABOUT 1 MILE NORTH OF THE VILLAGE OF
 JV6780'ABINGDON.
 JV6780'TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 24 AND
 JV6780'U.S. HIGHWAY 95 PROCEED NORTHEAST ALONG HIGHWAY 95 2.55 MILES TO THE
 JV6780'STATION ON THE LEFT.
 JV6780'THE STATION IS A STANDARD HARFORD COUNTY STATION DISK SET IN CONCRETE
 JV6780'ABOUT 1 INCH BELOW GROUND STAMPED 131 INTERSTATE 1989.  THE STATION IS
 JV6780'32.4 FEET NORTH OF THE EDGE OF PAVEMENT OF THE NORTH BOUND LANES OF
 JV6780'HIGHWAY 95, 71.4 FEET SOUTH OF THE EDGE OF PAVEMENT OF THE SOUTH BOUND
 JV6780'LANES OF HIGHWAY 95, AND 160.0 FEET WEST OF THE END OF GUARD RAIL
 JV6780'NORTH BOUND LANES FOR THE BRIDGE OVER BYNUM RUN.
 JV6780
 JV6780                          STATION RECOVERY (1993)
 JV6780
 JV6780'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 1993
 JV6780'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6781 ***********************************************************************
 JV6781  DESIGNATION -  INTERSTATE AZ MK
 JV6781  PID         -  JV6781
 JV6781  STATE/COUNTY-  MD/HARFORD
 JV6781  COUNTRY     -  US
 JV6781  USGS QUAD   -  EDGEWOOD (2016)
 JV6781
 JV6781                         *CURRENT SURVEY CONTROL
 JV6781  ______________________________________________________________________
 JV6781* NAD 83(2011) POSITION- 39 28 11.68315(N) 076 16 43.23636(W)   ADJUSTED
 JV6781* NAD 83(2011) ELLIP HT-    -7.025 (meters)        (06/27/12)   ADJUSTED
 JV6781* NAD 83(2011) EPOCH   -  2010.00
 JV6781* NAVD 88 ORTHO HEIGHT -    26.0   (meters)       85.    (feet) VERTCON3
 JV6781  ______________________________________________________________________
 JV6781  GEOID HEIGHT    -        -33.067 (meters)                     GEOID18
 JV6781  NAD 83(2011) X  -  1,169,471.531 (meters)                     COMP
 JV6781  NAD 83(2011) Y  - -4,789,617.648 (meters)                     COMP
 JV6781  NAD 83(2011) Z  -  4,032,720.873 (meters)                     COMP
 JV6781  LAPLACE CORR    -         -2.75  (seconds)                    DEFLEC18
 JV6781
 JV6781  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV6781  Standards:
 JV6781         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV6781            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV6781  -------------------------------------------------------------------
 JV6781  NETWORK    1.31   3.23           0.52   0.53   1.65      0.38197951
 JV6781  -------------------------------------------------------------------
 JV6781  Click here for local accuracies and other accuracy information.
 JV6781
 JV6781.The horizontal coordinates were established by GPS observations
 JV6781.and adjusted by the National Geodetic Survey in June 2012.
 JV6781
 JV6781.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV6781.been affixed to the stable North American tectonic plate. See 
 JV6781.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV6781
 JV6781.The horizontal coordinates are valid at the epoch date displayed above
 JV6781.which is a decimal equivalence of Year/Month/Day.
 JV6781
 JV6781.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV6781.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV6781
 JV6781.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6781.GEOID18 height accuracy estimate available here.
 JV6781
 JV6781.Click photographs - Photos may exist for this station.
 JV6781
 JV6781.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV6781
 JV6781.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV6781
 JV6781.The ellipsoidal height was determined by GPS observations
 JV6781.and is referenced to NAD 83.
 JV6781
 JV6781. The following values were computed from the NAD 83(2011) position.
 JV6781
 JV6781;                    North         East     Units Scale Factor Converg.
 JV6781;SPC MD       -   200,419.601   462,069.794   MT  1.00000354   +0 27 09.8
 JV6781;SPC MD       -   657,543.31  1,515,973.98   sFT  1.00000354   +0 27 09.8
 JV6781;UTM  18      - 4,369,705.571   390,011.474   MT  0.99974894   -0 48 46.4
 JV6781
 JV6781!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV6781!SPC MD       -   1.00000110  x   1.00000354  =   1.00000464
 JV6781!UTM  18      -   1.00000110  x   0.99974894  =   0.99975004
 JV6781
 JV6781:                Primary Azimuth Mark                     Grid Az
 JV6781:SPC MD       -  INTERSTATE                               044 08 13.8
 JV6781:UTM  18      -  INTERSTATE                               045 24 10.0
 JV6781
 JV6781_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9001169705(NAD 83)
 JV6781
 JV6781|---------------------------------------------------------------------|
 JV6781| PID    Reference Object                     Distance      Geod. Az  |
 JV6781|                                                           dddmmss.s |
 JV6781| JV6780 INTERSTATE                          APPROX. 0.9 KM 0443523.6 |
 JV6781|---------------------------------------------------------------------|
 JV6781
 JV6781                          SUPERSEDED SURVEY CONTROL
 JV6781
 JV6781  NAD 83(2007)-  39 28 11.68330(N)    076 16 43.23706(W) AD(2002.00) 0
 JV6781  ELLIP H (02/10/07)   -7.008  (m)                       GP(2002.00)    
 JV6781  ELLIP H (09/18/02)   -7.005  (m)                       GP(       ) 4 2
 JV6781  NAD 83(1991)-  39 28 11.68281(N)    076 16 43.23722(W) AD(       ) 1
 JV6781  ELLIP H (01/27/92)   -7.048  (m)                       GP(       ) 4 1
 JV6781  NAD 83(1986)-  39 28 11.67734(N)    076 16 43.24422(W) AD(       ) 1
 JV6781  NGVD 29 (06/18/91)   26.3    (m)  UNKNOWN  model used  GPS OBS        
 JV6781
 JV6781.Superseded values are not recommended for survey control.
 JV6781
 JV6781.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6781.See file dsdata.pdf to determine how the superseded data were derived.
 JV6781
 JV6781_MARKER: DZ = AZIMUTH MARK DISK
 JV6781_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV6781_STAMPING: 131 INTERSTATE 1989
 JV6781_MARK LOGO: MD-025
 JV6781_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
 JV6781_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV6781+STABILITY: SURFACE MOTION
 JV6781_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV6781+SATELLITE: SATELLITE OBSERVATIONS - 1989
 JV6781
 JV6781  HISTORY     - Date     Condition        Report By
 JV6781  HISTORY     - 1989     MONUMENTED       RDA
 JV6781
 JV6781                          STATION DESCRIPTION
 JV6781
 JV6781'DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1989
 JV6781'TO REACH THE AZIMUTH MARK FROM THE STATION PROCEED SOUTHWEST ALONG
 JV6781'HIGHWAY 95 0.56 MILES TO THE AZIMUTH MARK ON THE LEFT.
 JV6781'THE MARK IS A STANDARD HARFORD COUNTY AZIMUTH DISK SET IN CONCRETE
 JV6781'ABOUT 1 INCH BELOW GROUND STAMPED 131 INTERSTATE 1989.  THE MARK IS
 JV6781'91.6 FEET SOUTH OF THE EDGE OF PAVEMENT OF THE SOUTH BOUND LANES OF
 JV6781'HIGHWAY 95, 50.1 FEET NORTH OF THE EDGE OF PAVEMENT OF THE NORTH BOUND
 JV6781'LANES OF HIGHWAY 95, AND 194.9 FEET SOUTHWEST OF THE SOUTHWEST CORNER
 JV6781'OF THE STORM GRATE IN THE MEDIAN OF HIGHWAY 95 AND 2969.08 FEET FROM
 JV6781'THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB5657 ***********************************************************************
 AB5657  DESIGNATION -  IRELAND
 AB5657  PID         -  AB5657
 AB5657  STATE/COUNTY-  MD/TALBOT
 AB5657  COUNTRY     -  US
 AB5657  USGS QUAD   -  EASTON (2016)
 AB5657
 AB5657                         *CURRENT SURVEY CONTROL
 AB5657  ______________________________________________________________________
 AB5657* NAD 83(2011) POSITION- 38 47 14.14874(N) 076 04 35.75102(W)   ADJUSTED
 AB5657* NAD 83(2011) ELLIP HT-   -26.706 (meters)        (06/27/12)   ADJUSTED
 AB5657* NAD 83(2011) EPOCH   -  2010.00
 AB5657* NAVD 88 ORTHO HEIGHT -     7.942 (meters)       26.06  (feet) ADJUSTED
 AB5657  ______________________________________________________________________
 AB5657  GEOID HEIGHT    -        -34.640 (meters)                     GEOID18
 AB5657  NAD 83(2011) X  -  1,197,861.265 (meters)                     COMP
 AB5657  NAD 83(2011) Y  - -4,831,868.662 (meters)                     COMP
 AB5657  NAD 83(2011) Z  -  3,973,919.192 (meters)                     COMP
 AB5657  LAPLACE CORR    -         -3.20  (seconds)                    DEFLEC18
 AB5657  DYNAMIC HEIGHT  -          7.937 (meters)       26.04  (feet) COMP
 AB5657  MODELED GRAVITY -    980,037.8   (mgal)                       NAVD 88
 AB5657
 AB5657  VERT ORDER      -  SECOND    CLASS I
 AB5657
 AB5657  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB5657  Standards:
 AB5657         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB5657            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB5657  -------------------------------------------------------------------
 AB5657  NETWORK    0.30   0.43           0.13   0.11   0.22     -0.13442242
 AB5657  -------------------------------------------------------------------
 AB5657  Click here for local accuracies and other accuracy information.
 AB5657
 AB5657.The horizontal coordinates were established by GPS observations
 AB5657.and adjusted by the National Geodetic Survey in June 2012.
 AB5657
 AB5657.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB5657.been affixed to the stable North American tectonic plate. See 
 AB5657.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB5657
 AB5657.The horizontal coordinates are valid at the epoch date displayed above
 AB5657.which is a decimal equivalence of Year/Month/Day.
 AB5657
 AB5657.The orthometric height was determined by differential leveling and
 AB5657.adjusted by the NATIONAL GEODETIC SURVEY
 AB5657.in September 2004.
 AB5657
 AB5657.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB5657.GEOID18 height accuracy estimate available here.
 AB5657
 AB5657.Click photographs - Photos may exist for this station.
 AB5657
 AB5657.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB5657
 AB5657.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB5657
 AB5657.The ellipsoidal height was determined by GPS observations
 AB5657.and is referenced to NAD 83.
 AB5657
 AB5657.The dynamic height is computed by dividing the NAVD 88
 AB5657.geopotential number by the normal gravity value computed on the
 AB5657.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AB5657.degrees latitude (g = 980.6199 gals.).
 AB5657
 AB5657.The modeled gravity was interpolated from observed gravity values.
 AB5657
 AB5657. The following values were computed from the NAD 83(2011) position.
 AB5657
 AB5657;                    North         East     Units Scale Factor Converg.
 AB5657;SPC MD       -   124,796.517   480,224.720   MT  0.99995104   +0 34 46.4
 AB5657;SPC MD       -   409,436.57  1,575,537.27   sFT  0.99995104   +0 34 46.4
 AB5657;UTM  18      - 4,293,719.763   406,495.822   MT  0.99970766   -0 40 28.1
 AB5657
 AB5657!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB5657!SPC MD       -   1.00000419  x   0.99995104  =   0.99995523
 AB5657!UTM  18      -   1.00000419  x   0.99970766  =   0.99971185
 AB5657
 AB5657_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0649593719(NAD 83)
 AB5657
 AB5657|---------------------------------------------------------------------|
 AB5657| PID    Reference Object                     Distance      Geod. Az  |
 AB5657|                                                           dddmmss.s |
 AB5657| DH8691 GPS 051                              86.571 METERS 29716     |
 AB5657|---------------------------------------------------------------------|
 AB5657
 AB5657                          SUPERSEDED SURVEY CONTROL
 AB5657
 AB5657  NAD 83(2007)-  38 47 14.14883(N)    076 04 35.75178(W) AD(2002.00) 0
 AB5657  ELLIP H (02/10/07)  -26.670  (m)                       GP(2002.00)    
 AB5657  ELLIP H (08/30/02)  -26.651  (m)                       GP(       ) 4 2
 AB5657  NAD 83(1991)-  38 47 14.14950(N)    076 04 35.75241(W) AD(       ) 1
 AB5657  ELLIP H (08/02/96)  -26.609  (m)                       GP(       ) 3 1
 AB5657  NAVD 88               7.94   (m)           26.0    (f) LEVELING    3  
 AB5657  NAVD 88 (08/02/96)    8.0    (m)  GEOID93  model used  GPS OBS        
 AB5657
 AB5657.Superseded values are not recommended for survey control.
 AB5657
 AB5657.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB5657.See file dsdata.pdf to determine how the superseded data were derived.
 AB5657
 AB5657_MARKER: DD = SURVEY DISK
 AB5657_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB5657_STAMPING: IRELAND 1961
 AB5657_MARK LOGO: MDBCSM
 AB5657_PROJECTION: FLUSH
 AB5657_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB5657_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB5657+STABILITY: SURFACE MOTION
 AB5657_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB5657+SATELLITE: SATELLITE OBSERVATIONS - February 28, 2007
 AB5657
 AB5657  HISTORY     - Date     Condition        Report By
 AB5657  HISTORY     - 1961     MONUMENTED       MDBCSM
 AB5657  HISTORY     - 20000726 GOOD             MDSHA
 AB5657  HISTORY     - 20020312 MARK NOT FOUND   USPSQD
 AB5657  HISTORY     - 20020521 GOOD             USPSQD
 AB5657  HISTORY     - 20060106 GOOD             GEOMET
 AB5657  HISTORY     - 20070219 GOOD             USPSQD
 AB5657  HISTORY     - 20070228 GOOD             USPSQD
 AB5657
 AB5657                          STATION DESCRIPTION
 AB5657
 AB5657'DESCRIBED BY MD BUR SURV AND MAPS 1961
 AB5657'THE STATION MARK IS ABOUT 1.0 MI (1.6 KM) NORTH OF THE CENTER OF
 AB5657'EASTON.
 AB5657'
 AB5657'TO REACH FROM THE INTERSECTION OF RT 50 AND RT 322 (EASTON PARKWAY),
 AB5657'GO SOUTHWEST ON RT 322 FOR 1.15 MI (1.85 KM) TO THE INTERSECTION WITH
 AB5657'GLEBE ROAD.  TURN LEFT ON GLEBE ROAD AND GO SOUTHEAST FOR 0.5 MI
 AB5657'(0.8 KM) TO THE INTERSECTION WITH A SHOPPING CENTER SERVICE ROAD AND
 AB5657'THE STATION ON THE RIGHT.
 AB5657'
 AB5657'THE STATION MARK IS SET IN THE TOP OF A 10 IN DIAMETER CONCRETE
 AB5657'MONUMENT FLUSH WITH THE GROUND,  52.6 FT (16.0 M) SOUTHEAST POLE NO.
 AB5657'BE-1-78.5, 30.0 SOUTH OF THE CENTERLINE OF GLEBE ROAD, 19.5 FT
 AB5657'(5.9 M) EAST OF THE CENTERLINE OF THE SERVICE ROAD.
 AB5657
 AB5657                          STATION RECOVERY (2000)
 AB5657
 AB5657'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AB5657'RECOVERED AS DESCRIBED.
 AB5657
 AB5657                          STATION RECOVERY (2002)
 AB5657
 AB5657'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5657'REFERENCED POWER POLE NOT LOCATED. DIRECTIONS AND DISTANCES FROM GLEBE
 AB5657'ROAD AND SERVICE ROAD APPEAR INCORRECT.  EXTENSIVE MEASURING, DIGGING
 AB5657'AND PROBING FAILED TO RECOVER STATION.
 AB5657
 AB5657                          STATION RECOVERY (2002)
 AB5657
 AB5657'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 AB5657'AREA REVISITED. DISTANCE FROM ROUTE 322 SHOULD READ 0.05 (NOT
 AB5657'0.5)MILES TO THE SERVICE ROAD AND MARK ON THE RIGHT. REMAINDER OF
 AB5657'DESCRIPTION IS ADEQUATE.  CONCRETE MONUMENT IS CHIPPED AND CRACKED BY
 AB5657'ROW MAINTENANCE EQUIPMENT.
 AB5657
 AB5657                          STATION RECOVERY (2006)
 AB5657
 AB5657'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2006 (KRO)
 AB5657'RECOVERED AS DESCRIBED.
 AB5657
 AB5657                          STATION RECOVERY (2007)
 AB5657
 AB5657'RECOVERY NOTE BY US POWER SQUADRON 2007 (JKW)
 AB5657'RECOVERED IN GOOD CONDITION.
 AB5657
 AB5657                          STATION RECOVERY (2007)
 AB5657
 AB5657'RECOVERY NOTE BY US POWER SQUADRON 2007
 AB5657'DIRECTIONS ARE WRONG. IT IS .05 MILES FROM CORNER OF EASTON BYPASS. IT
 AB5657'IS ON THE SE SIDE OF THE SHOPPING CENTER SERVICE ROAD, 1 FOOT FROM THE
 AB5657'CURB.  THIS ONE IS DUE TO BE DISTURBED, ACCORDING TO SURVEYORS ON
 AB5657'SITE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DS3142 ***********************************************************************
 DS3142  HT_MOD      -  This is a Height Modernization Survey Station.
 DS3142  DESIGNATION -  IRISH 175
 DS3142  PID         -  DS3142
 DS3142  STATE/COUNTY-  MD/HARFORD
 DS3142  COUNTRY     -  US
 DS3142  USGS QUAD   -  PERRYMAN (2016)
 DS3142
 DS3142                         *CURRENT SURVEY CONTROL
 DS3142  ______________________________________________________________________
 DS3142* NAD 83(2011) POSITION- 39 28 05.99127(N) 076 12 15.77020(W)   ADJUSTED
 DS3142* NAD 83(2011) ELLIP HT-   -18.316 (meters)        (12/12/24)   ADJUSTED
 DS3142* NAD 83(2011) EPOCH   -  2010.00
 DS3142* NAVD 88 ORTHO HEIGHT -    14.82  (meters)       48.6   (feet) GPS OBS
 DS3142  ______________________________________________________________________
 DS3142  GEOID HEIGHT    -        -33.158 (meters)                     GEOID18
 DS3142  NAD 83(2011) X  -  1,175,705.833 (meters)                     COMP
 DS3142  NAD 83(2011) Y  - -4,788,197.052 (meters)                     COMP
 DS3142  NAD 83(2011) Z  -  4,032,578.186 (meters)                     COMP
 DS3142  LAPLACE CORR    -         -2.42  (seconds)                    DEFLEC18
 DS3142
 DS3142  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DS3142  Standards:
 DS3142         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DS3142            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DS3142  -------------------------------------------------------------------
 DS3142  NETWORK    1.02   1.49           0.44   0.39   0.76     -0.10264544
 DS3142  -------------------------------------------------------------------
 DS3142  Click here for local accuracies and other accuracy information.
 DS3142
 DS3142.The horizontal coordinates were established by GPS observations
 DS3142.and adjusted by the MD DEPT OF TRANSP in December 2024.
 DS3142
 DS3142.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DS3142.been affixed to the stable North American tectonic plate. See 
 DS3142.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DS3142
 DS3142.The horizontal coordinates are valid at the epoch date displayed above
 DS3142.which is a decimal equivalence of Year/Month/Day.
 DS3142
 DS3142.The orthometric height was determined by GPS observations and a
 DS3142.high-resolution geoid model using precise GPS observation and
 DS3142.processing techniques.
 DS3142
 DS3142.Significant digits in the geoid height do not necessarily reflect accuracy.
 DS3142.GEOID18 height accuracy estimate available here.
 DS3142
 DS3142.Click photographs - Photos may exist for this station.
 DS3142
 DS3142.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DS3142
 DS3142.The Laplace correction was computed from DEFLEC18 derived deflections.
 DS3142
 DS3142.The ellipsoidal height was determined by GPS observations
 DS3142.and is referenced to NAD 83.
 DS3142
 DS3142. The following values were computed from the NAD 83(2011) position.
 DS3142
 DS3142;                    North         East     Units Scale Factor Converg.
 DS3142;SPC MD       -   200,297.187   468,464.346   MT  1.00000326   +0 29 57.7
 DS3142;SPC MD       -   657,141.69  1,536,953.44   sFT  1.00000326   +0 29 57.7
 DS3142;UTM  18      - 4,369,442.051   396,400.084   MT  0.99973214   -0 45 56.3
 DS3142
 DS3142!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DS3142!SPC MD       -   1.00000287  x   1.00000326  =   1.00000613
 DS3142!UTM  18      -   1.00000287  x   0.99973214  =   0.99973501
 DS3142
 DS3142_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9640069442(NAD 83)
 DS3142
 DS3142                          SUPERSEDED SURVEY CONTROL
 DS3142
 DS3142.No superseded survey control is available for this station.
 DS3142
 DS3142_MARKER: DD = SURVEY DISK
 DS3142_SETTING: 9 = POST (STONE OR PRECAST CONCRETE)
 DS3142_STAMPING: IRISH 175
 DS3142_MARK LOGO: MD-025
 DS3142_PROJECTION: RECESSED 5 CENTIMETERS
 DS3142_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 DS3142_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DS3142+SATELLITE: SATELLITE OBSERVATIONS - December 11, 2023
 DS3142
 DS3142  HISTORY     - Date     Condition        Report By
 DS3142  HISTORY     - 19660101 MONUMENTED       MD-025
 DS3142  HISTORY     - 20231211 GOOD             MDSHA
 DS3142
 DS3142                          STATION DESCRIPTION
 DS3142
 DS3142'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2023 (EBD)
 DS3142'THE MARK IS LOCATED ABOUT 5.9 MI (9.5 KM) NORTHEAST OF EDGEWOOD, 3.5
 DS3142'MI (5.6 KM) SOUTHWEST OF ABERDEEN AND IN THE TOWN OF PERRYMAN, MD.
 DS3142'TO REACH THE MARK FROM THE INTERSECTION OF US 40 (PULASKI HIGHWAY) AND
 DS3142'SPESUTIA ROAD PROCEED SOUTH ON SPESUTIA ROAD FOR 1.23 KM (0.76 MI) TO
 DS3142'THE INTERSECTION WITH PERRYMAN ROAD.  TURN RIGHT ON PERRYMAN ROAD AND
 DS3142'PROCEED FOR 0.14 KM (0.09 MI) AND TURN RIGHT TO CONTINUE ON PERRYMAN
 DS3142'ROAD.  PROCEED FOR 0.53 KM (0.33 MI) TO THE INTERSECTION WITH IRISH
 DS3142'LANE.  TURN RIGHT ON IRISH LANE TO THE MARK ON THE LEFT.
 DS3142'
 DS3142'THE MARK IS 99.4 FT (30.3 M) NORTH-NORTHWEST OF A UTILITY POLE
 DS3142'NUMBERED BGE 290676, 55.6 FT (16.9 M) SOUTH OF A FIRE HYDRANT, 54.9 FT
 DS3142'(16.7 M) WEST OF THE INTERSECTION OF IRISH LANE AND PERRYMAN ROAD,
 DS3142'36.2 FT (11.0 M) WEST-SOUTHWEST OF A UTILITY POLE NUMBERED GE 76788,
 DS3142'15.6 FT (4.8 M) SOUTHWEST OF THE CENTERLINE OF IRISH LANE SET IN THE
 DS3142'TOP OF A 4-IN (10 CM) ROUND CONCRETE POST AND ABOUT 2 FT (0.6 M)
 DS3142'HIGHER THAN THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AB4713 ***********************************************************************
 AB4713  DESIGNATION -  IRON
 AB4713  PID         -  AB4713
 AB4713  STATE/COUNTY-  MD/CARROLL
 AB4713  COUNTRY     -  US
 AB4713  USGS QUAD   -  FINKSBURG (2016)
 AB4713
 AB4713                         *CURRENT SURVEY CONTROL
 AB4713  ______________________________________________________________________
 AB4713* NAD 83(2011) POSITION- 39 26 02.76902(N) 076 58 16.56667(W)   ADJUSTED
 AB4713* NAD 83(2011) ELLIP HT-   149.262 (meters)        (06/27/12)   ADJUSTED
 AB4713* NAD 83(2011) EPOCH   -  2010.00
 AB4713* NAVD 88 ORTHO HEIGHT -   181.2   (meters)      594.    (feet) GPS OBS
 AB4713  ______________________________________________________________________
 AB4713  NAVD 88 orthometric height was determined with geoid model    GEOID99
 AB4713  GEOID HEIGHT    -        -31.980 (meters)                     GEOID99
 AB4713  GEOID HEIGHT    -        -31.977 (meters)                     GEOID18
 AB4713  NAD 83(2011) X  -  1,112,087.311 (meters)                     COMP
 AB4713  NAD 83(2011) Y  - -4,805,982.819 (meters)                     COMP
 AB4713  NAD 83(2011) Z  -  4,029,750.271 (meters)                     COMP
 AB4713  LAPLACE CORR    -         -1.15  (seconds)                    DEFLEC18
 AB4713
 AB4713  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AB4713  Standards:
 AB4713         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AB4713            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AB4713  -------------------------------------------------------------------
 AB4713  NETWORK    1.44   4.33           0.63   0.54   2.21      0.00333128
 AB4713  -------------------------------------------------------------------
 AB4713  Click here for local accuracies and other accuracy information.
 AB4713
 AB4713.The horizontal coordinates were established by GPS observations
 AB4713.and adjusted by the National Geodetic Survey in June 2012.
 AB4713
 AB4713.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AB4713.been affixed to the stable North American tectonic plate. See 
 AB4713.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AB4713
 AB4713.The horizontal coordinates are valid at the epoch date displayed above
 AB4713.which is a decimal equivalence of Year/Month/Day.
 AB4713
 AB4713.The orthometric height was determined by GPS observations and a
 AB4713.high-resolution geoid model.
 AB4713
 AB4713.Significant digits in the geoid height do not necessarily reflect accuracy.
 AB4713.GEOID18 height accuracy estimate available here.
 AB4713
 AB4713.Click photographs - Photos may exist for this station.
 AB4713
 AB4713.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AB4713
 AB4713.The Laplace correction was computed from DEFLEC18 derived deflections.
 AB4713
 AB4713.The ellipsoidal height was determined by GPS observations
 AB4713.and is referenced to NAD 83.
 AB4713
 AB4713. The following values were computed from the NAD 83(2011) position.
 AB4713
 AB4713;                    North         East     Units Scale Factor Converg.
 AB4713;SPC MD       -   196,199.047   402,473.618   MT  0.99999726   +0 01 04.9
 AB4713;SPC MD       -   643,696.37  1,320,448.86   sFT  0.99999726   +0 01 04.9
 AB4713;UTM  18      - 4,366,805.403   330,345.805   MT  0.99995439   -1 15 08.7
 AB4713
 AB4713!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AB4713!SPC MD       -   0.99997658  x   0.99999726  =   0.99997384
 AB4713!UTM  18      -   0.99997658  x   0.99995439  =   0.99993097
 AB4713
 AB4713_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ3034566805(NAD 83)
 AB4713
 AB4713                          SUPERSEDED SURVEY CONTROL
 AB4713
 AB4713  NAD 83(2007)-  39 26 02.76924(N)    076 58 16.56742(W) AD(2002.00) 0
 AB4713  ELLIP H (02/10/07)  149.285  (m)                       GP(2002.00)    
 AB4713  ELLIP H (08/30/02)  149.276  (m)                       GP(       ) 4 2
 AB4713  NAD 83(1991)-  39 26 02.76912(N)    076 58 16.56756(W) AD(       ) 1
 AB4713  ELLIP H (07/03/96)  149.175  (m)                       GP(       ) 1 1
 AB4713  NAVD 88 (07/03/96)  181.2    (m)  GEOID93  model used  GPS OBS        
 AB4713
 AB4713.Superseded values are not recommended for survey control.
 AB4713
 AB4713.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AB4713.See file dsdata.pdf to determine how the superseded data were derived.
 AB4713
 AB4713_MARKER: DD = SURVEY DISK
 AB4713_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AB4713_STAMPING: IRON 1995
 AB4713_MARK LOGO: MD-013
 AB4713_MAGNETIC: O = OTHER; SEE DESCRIPTION
 AB4713_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AB4713+STABILITY: SURFACE MOTION
 AB4713_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AB4713+SATELLITE: SATELLITE OBSERVATIONS - 1995
 AB4713
 AB4713  HISTORY     - Date     Condition        Report By
 AB4713  HISTORY     - 1995     MONUMENTED       MD-013
 AB4713
 AB4713                          STATION DESCRIPTION
 AB4713
 AB4713'DESCRIBED BY CARROLL COUNTY MARYLAND 1995
 AB4713'STATION IS LOCATED ABOUT 9.5 MI (15.3 KM) SOUTH OF WESTMINSTER AND
 AB4713'ABOUT 5.0 MI (8.0 KM) NORTH OF SYKESVILLE. TO REACH STATION FROM THE
 AB4713'INTERSECTION OF MD ROUTE 26 (LIBERTY ROAD) AND MD ROUTE 97 (OLD
 AB4713'WASHINGTON ROAD) GO EAST ON MD ROUTE 26 FOR 0.7 MI (1.1 KM) TO THE
 AB4713'INTERSECTION WITH KLEES MILL ROAD. TURN LEFT ON KLEES MILL ROAD AND GO
 AB4713'NORTH FOR 1.8 MI (2.9 KM) TO THE INTERSECTION WITH BARTHOLOW ROAD.
 AB4713'TURN RIGHT AND GO EAST ON BARTHOLOW ROAD FOR 1.5 MI (2.4 KM) TO THE
 AB4713'STATION ON THE RIGHT. STATION MARK IS SET IN THE TOP OF A 10 IN
 AB4713'DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS 21.0 FT
 AB4713'(6.4 M) SOUTH OF THE CENTERLINE OF THE ROAD, 4 FT (1.2 M) NORTH OF THE
 AB4713'EDGE OF A CULTIVATED FIELD, 28.0 FT (8.5 M) EAST OF THE CENTERLINE OF
 AB4713'OF A DRIVEWAY LEADING SOUTH TO HOUSE NO.5060 AND 98.0 FT (29.9 M) WEST
 AB4713'OF A STONE DRIVEWAY LEADING SOUTH TO HOUSE NO.5100.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 AJ8006 ***********************************************************************
 AJ8006  CBN         -  This is a Cooperative Base Network Control Station.
 AJ8006  DESIGNATION -  IRON
 AJ8006  PID         -  AJ8006
 AJ8006  STATE/COUNTY-  MD/WORCESTER
 AJ8006  COUNTRY     -  US
 AJ8006  USGS QUAD   -  BERLIN (2016)
 AJ8006
 AJ8006                         *CURRENT SURVEY CONTROL
 AJ8006  ______________________________________________________________________
 AJ8006* NAD 83(2011) POSITION- 38 17 01.86658(N) 075 13 52.70179(W)   ADJUSTED
 AJ8006* NAD 83(2011) ELLIP HT-   -25.461 (meters)        (06/27/12)   ADJUSTED
 AJ8006* NAD 83(2011) EPOCH   -  2010.00
 AJ8006* NAVD 88 ORTHO HEIGHT -    10.619 (meters)       34.84  (feet) ADJUSTED
 AJ8006  ______________________________________________________________________
 AJ8006  GEOID HEIGHT    -        -36.087 (meters)                     GEOID18
 AJ8006  NAD 83(2011) X  -  1,277,888.468 (meters)                     COMP
 AJ8006  NAD 83(2011) Y  - -4,847,336.331 (meters)                     COMP
 AJ8006  NAD 83(2011) Z  -  3,930,208.146 (meters)                     COMP
 AJ8006  LAPLACE CORR    -         -0.42  (seconds)                    DEFLEC18
 AJ8006  DYNAMIC HEIGHT  -         10.612 (meters)       34.82  (feet) COMP
 AJ8006  MODELED GRAVITY -    979,999.7   (mgal)                       NAVD 88
 AJ8006
 AJ8006  VERT ORDER      -  SECOND    CLASS I
 AJ8006
 AJ8006  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 AJ8006  Standards:
 AJ8006         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 AJ8006            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 AJ8006  -------------------------------------------------------------------
 AJ8006  NETWORK    0.72   1.33           0.31   0.28   0.68     -0.03657608
 AJ8006  -------------------------------------------------------------------
 AJ8006  Click here for local accuracies and other accuracy information.
 AJ8006
 AJ8006.The horizontal coordinates were established by GPS observations
 AJ8006.and adjusted by the National Geodetic Survey in June 2012.
 AJ8006
 AJ8006.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 AJ8006.been affixed to the stable North American tectonic plate. See 
 AJ8006.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 AJ8006
 AJ8006.The horizontal coordinates are valid at the epoch date displayed above
 AJ8006.which is a decimal equivalence of Year/Month/Day.
 AJ8006
 AJ8006.The orthometric height was determined by differential leveling and
 AJ8006.adjusted by the NATIONAL GEODETIC SURVEY
 AJ8006.in June 2004.
 AJ8006
 AJ8006.Significant digits in the geoid height do not necessarily reflect accuracy.
 AJ8006.GEOID18 height accuracy estimate available here.
 AJ8006
 AJ8006.Click photographs - Photos may exist for this station.
 AJ8006
 AJ8006.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 AJ8006
 AJ8006.The Laplace correction was computed from DEFLEC18 derived deflections.
 AJ8006
 AJ8006.The ellipsoidal height was determined by GPS observations
 AJ8006.and is referenced to NAD 83.
 AJ8006
 AJ8006.The dynamic height is computed by dividing the NAVD 88
 AJ8006.geopotential number by the normal gravity value computed on the
 AJ8006.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 AJ8006.degrees latitude (g = 980.6199 gals.).
 AJ8006
 AJ8006.The modeled gravity was interpolated from observed gravity values.
 AJ8006
 AJ8006. The following values were computed from the NAD 83(2011) position.
 AJ8006
 AJ8006;                    North         East     Units Scale Factor Converg.
 AJ8006;SPC MD       -    70,009.434   554,738.803   MT  1.00000285   +1 06 36.3
 AJ8006;SPC MD       -   229,689.28  1,820,005.56   sFT  1.00000285   +1 06 36.3
 AJ8006;UTM  18      - 4,237,335.032   479,770.460   MT  0.99960504   -0 08 35.9
 AJ8006
 AJ8006!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AJ8006!SPC MD       -   1.00000400  x   1.00000285  =   1.00000685
 AJ8006!UTM  18      -   1.00000400  x   0.99960504  =   0.99960903
 AJ8006
 AJ8006_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH7977037335(NAD 83)
 AJ8006
 AJ8006                          SUPERSEDED SURVEY CONTROL
 AJ8006
 AJ8006  NAD 83(2007)-  38 17 01.86685(N)    075 13 52.70252(W) AD(2002.00) 0
 AJ8006  ELLIP H (02/10/07)  -25.436  (m)                       GP(2002.00)    
 AJ8006  NAD 83(1991)-  38 17 01.86687(N)    075 13 52.70226(W) AD(       ) A
 AJ8006  ELLIP H (02/12/02)  -25.434  (m)                       GP(       ) 4 1
 AJ8006  NAVD 88 (02/12/02)   10.6    (m)  GEOID99  model used  GPS OBS        
 AJ8006
 AJ8006.Superseded values are not recommended for survey control.
 AJ8006
 AJ8006.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AJ8006.See file dsdata.pdf to determine how the superseded data were derived.
 AJ8006
 AJ8006_MARKER: DD = SURVEY DISK
 AJ8006_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 AJ8006_STAMPING: IRON 1962
 AJ8006_MARK LOGO: MDBCSM
 AJ8006_PROJECTION: FLUSH
 AJ8006_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 AJ8006+STABILITY: SURFACE MOTION
 AJ8006_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 AJ8006+SATELLITE: SATELLITE OBSERVATIONS - May 05, 2020
 AJ8006
 AJ8006  HISTORY     - Date     Condition        Report By
 AJ8006  HISTORY     - 1962     MONUMENTED       MDBCSM
 AJ8006  HISTORY     - 19991206 GOOD             MDSHA
 AJ8006  HISTORY     - 20000405 GOOD             MDSHA
 AJ8006  HISTORY     - 20051203 GOOD             USPSQD
 AJ8006  HISTORY     - 20200505 GOOD             MDSHA
 AJ8006
 AJ8006                          STATION DESCRIPTION
 AJ8006
 AJ8006'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 AJ8006'THE STATION IS LOCATED 2.6 MILES (4.2 KM) SOUTHWEST OF BERLIN, 3.8
 AJ8006'MILES (6.1 KM) NORTHEAST OF NEWARK, WORCESTER COUNTY.  TO REACH THE
 AJ8006'STATION FROM THE U.S.HIGHWAY 113 BRIDGE OVER U.S.HIGHWAY 50 IN BERLIN,
 AJ8006'PROCEED SOUTHWEST ON U.S.HIGHWAY 113 FOR 3.35 MILES (5.39 KM) TO THE
 AJ8006'END OF THE DUEL HIGHWAY.  CONTINUE SOUTHWEST ON U.S.HIGHWAY 113 FOR
 AJ8006'1.0 MILES (1.6 KM) TO IRONSHIRE STATION ROAD AND THE STATION ON THE
 AJ8006'LEFT.  IT IS A STANDARD MARYLAND CONTROL SURVEY DISK SET IN THE TOP OF
 AJ8006'A 8 INCH ROUND CONCRETE MONUMENT, 44.2 FEET (13.5 M) SOUTHEAST OF THE
 AJ8006'CENTER LINE OF THE HIGHWAY, 106.5 FEET (32.5 M) SOUTH-SOUTHWEST OF THE
 AJ8006'CENTER OF IRONSHIRE STATION ROAD, 50.4 FEET (15.4 M) NORTHWEST OF THE
 AJ8006'WEST CORNER OF A 1 STORY BLOCK BUILDING, 60.1 FEET (18.3 M) WEST OF
 AJ8006'THE NORTH CORNER OF A 1 STORY BLOCK BUILDING, 144.5 FEET (44.0 M)
 AJ8006'SOUTHWEST OF TELEPHONE POLE NUMBER 3, SET IN A GRASS ISLAND AND FLUSH
 AJ8006'WITH THE GROUND STAMPED IRON 1962.
 AJ8006
 AJ8006                          STATION RECOVERY (2000)
 AJ8006
 AJ8006'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2000 (SFK)
 AJ8006'THE STATION IS LOCATED ABOUT 2.6 MILES (4.2 KM) SOUTHWEST OF BERLIN,
 AJ8006'3.8 MILES (6.1 KM) NORTHEAST OF NEWARK, WORCESTER COUNTY.  TO REACH
 AJ8006'THE STATION FROM THE U.S.HIGHWAY 113 BRIDGE OVER U.S.HIGHWAY 50 IN
 AJ8006'BERLIN, PROCEED SOUTHWEST ALONG U.S.HIGHWAY 113 FOR 3.35 MILES (5.39
 AJ8006'KM) TO THE END OF THE DUEL HIGHWAY.  CONTINUE SOUTHWEST ALONG
 AJ8006'U.S.HIGHWAY 113 FOR 1.0 MILES (1.6 KM) TO IRONSHIRE STATION ROAD AND
 AJ8006'THE STATION ON THE LEFT.  IT IS A STANDARD MARYLAND CONTROL SURVEY
 AJ8006'DISK SET IN THE TOP OF A 8 INCH ROUND CONCRETE MONUMENT, 44.2 FEET
 AJ8006'(13.5 M) SOUTHEAST OF THE CENTERLINE OF THE HIGHWAY, 106.5
 AJ8006'SOUTH-SOUTHWEST OF THE CENTER OF IRONSHIRE STATION ROAD, 50.4 FEET
 AJ8006'(15.4 M) NORTHWEST OF THE WEST CORNER OF A 1 STORY BLOCK BUILDING,
 AJ8006'144.5 FEET (44.0 M) SOUTHWEST OF TELEPHONE POLE NUMBER 3, SET IN A
 AJ8006'GRASS ISLAND AND FLUSH WITH THE GROUND.
 AJ8006
 AJ8006                          STATION RECOVERY (2005)
 AJ8006
 AJ8006'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 AJ8006'RECOVERED IN GOOD CONDITION.
 AJ8006
 AJ8006                          STATION RECOVERY (2020)
 AJ8006
 AJ8006'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (BC)
 AJ8006'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5175 ***********************************************************************
 JV5175  DESIGNATION -  IRON 2
 JV5175  PID         -  JV5175
 JV5175  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5175  COUNTRY     -  US
 JV5175  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5175
 JV5175                         *CURRENT SURVEY CONTROL
 JV5175  ______________________________________________________________________
 JV5175* NAD 83(1991) POSITION- 39 04 46.07678(N) 076 28 32.36828(W)   ADJUSTED
 JV5175* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5175  ______________________________________________________________________
 JV5175  GEOID HEIGHT    -        -33.217 (meters)                     GEOID18
 JV5175  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 JV5175  HORZ ORDER      -  THIRD
 JV5175
 JV5175.The horizontal coordinates were established by classical geodetic methods
 JV5175.and adjusted by the National Geodetic Survey in January 1992.
 JV5175
 JV5175.The orthometric height was scaled from a topographic map.
 JV5175
 JV5175.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5175.GEOID18 height accuracy estimate available here.
 JV5175
 JV5175.Click photographs - Photos may exist for this station.
 JV5175
 JV5175.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5175
 JV5175. The following values were computed from the NAD 83(1991) position.
 JV5175
 JV5175;                    North         East     Units Scale Factor Converg.
 JV5175;SPC MD       -   156,958.088   445,368.784   MT  0.99995615   +0 19 44.7
 JV5175;SPC MD       -   514,953.33  1,461,180.75   sFT  0.99995615   +0 19 44.7
 JV5175;UTM  18      - 4,326,631.348   372,360.324   MT  0.99980061   -0 55 49.4
 JV5175
 JV5175!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5175!SPC MD       -   1.00000431  x   0.99995615  =   0.99996046
 JV5175!UTM  18      -   1.00000431  x   0.99980061  =   0.99980492
 JV5175
 JV5175:                Primary Azimuth Mark                     Grid Az
 JV5175:SPC MD       -  BLUFF 2                                  103 32 10.7
 JV5175:UTM  18      -  BLUFF 2                                  104 47 44.8
 JV5175
 JV5175_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7236026631(NAD 83)
 JV5175
 JV5175|---------------------------------------------------------------------|
 JV5175| PID    Reference Object                     Distance      Geod. Az  |
 JV5175|                                                           dddmmss.s |
 JV5175| CA9555 IRON                                               08639     |
 JV5175| JV5206 BLUFF 2                             APPROX. 3.0 KM 1035155.4 |
 JV5175| JV5194 IRON 2 RM                             5.010 METERS 32031     |
 JV5175|---------------------------------------------------------------------|
 JV5175
 JV5175                          SUPERSEDED SURVEY CONTROL
 JV5175
 JV5175  NAD 83(1986)-  39 04 46.07275(N)    076 28 32.37884(W) AD(       ) 3
 JV5175  NAD 27      -  39 04 45.67800(N)    076 28 33.51700(W) AD(       ) 3
 JV5175  USSD        -  39 04 46.02100(N)    076 28 33.35200(W) AD(       ) 3
 JV5175
 JV5175.Superseded values are not recommended for survey control.
 JV5175
 JV5175.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5175.See file dsdata.pdf to determine how the superseded data were derived.
 JV5175
 JV5175_MARKER: N = NAIL
 JV5175_SETTING: 0 = UNSPECIFIED SETTING
 JV5175_MARK LOGO: CGS
 JV5175
 JV5175  HISTORY     - Date     Condition        Report By
 JV5175  HISTORY     - 1906     MONUMENTED       MDSFC
 JV5175  HISTORY     - 1933     MARK NOT FOUND   CGS
 JV5175  HISTORY     - 1961     MARK NOT FOUND   CGS
 JV5175
 JV5175                          STATION DESCRIPTION
 JV5175
 JV5175'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906 (CCY)
 JV5175'STATION IS ON THE N SHORE OF MAGOTHY RIVER, ON EXTREME S END OF
 JV5175'PARK POINT, BETWEEN ENTRANCES TO PARK AND BROAD CREEKS, ON TOP OF
 JV5175'A BLUFF ABOUT 15 FEET HIGH AND ABOUT 15 FEET BACK FROM ITS EDGE.
 JV5175'STATION MARK IS NAIL IN WOODEN STUB PROJECTING 3 INCHES ABOVE THE
 JV5175'GROUND.  REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE
 JV5175'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 JV5175'SQUARE CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4
 JV5175'INCHES.  THE LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN
 JV5175'TOP OF POST.  IT IS 5.01 METERS (16.44 FEET FROM STATION IN
 JV5175'BEARING N 39 DEG 29 MIN W.  DISTANCES AND BEARINGS FROM THE
 JV5175'STATION OF OTHER POINTS OF REFERENCE ARE AS FOLLOWS--NAIL IN
 JV5175'BLAZE IN 12-INCH TREE, 8.96 METERS (29.40 FEET), N 66 DEG 0 MIN W.
 JV5175'NAIL IN BLAZE OF TREE, 10.46 METERS (34.3 FEET), N 33 DEG 28 MIN
 JV5175'W.  NAIL IN BLAZE IN FORKED TREE, 4.37 METERS (14.34 FEET), N 29
 JV5175'DEG 10 MIN E.  HOUSE ON DOBBINS ISLAND, 3/4 MILE, S 83 DEG 36
 JV5175'MIN E.  LONE TREE NEAR TRIANGULATION STATION PURSE, 3 MILES, S 43
 JV5175'DEG 34 MIN E.
 JV5175
 JV5175                          STATION RECOVERY (1933)
 JV5175
 JV5175'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933 (JAB)
 JV5175'THE STATION WAS ON PARK POINT, NOW THE FRONT YARD OF THE
 JV5175'RESIDENCE OF WILLIAM SMITH.
 JV5175'
 JV5175'A PAVILION HAS BEEN BUILT ON THE TOP OF THE BLUFF, AT ITS EDGE,
 JV5175'ABOUT 5 FEET TOWARD THE RIVER, FROM THE LOCATION OF THE STATION.
 JV5175'AT LEAST 10 FEET OF THE BLUFF HAS BEEN WASHED AWAY.
 JV5175'
 JV5175'THE MARYLAND SHELL FISH SURVEY REFERENCE MARK WAS FOUND IN GOOD
 JV5175'CONDITION.  THE BLAZE IN A TREE 4.37 METERS (14.34 FEET), 209 DEG
 JV5175'10 MIN WAS FOUND.  USING THE DISTANCE TO THE REFERENCE MARK, 16.44
 JV5175'FEET, AND THE DISTANCE TO THE BLAZE IN THE TREE, TO ESTABLISH THE
 JV5175'LOCATION OF THE STATION, EXCAVATION WAS MADE BUT NO WOODEN HUB,
 JV5175'WHICH MARKED THE ORIGINAL STATION, WAS FOUND.  IT EITHER ROTTED
 JV5175'AWAY OR WAS DESTROYED DURING THE CONSTRUCTION OF THE PAVILION.
 JV5175
 JV5175                          STATION RECOVERY (1961)
 JV5175
 JV5175'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW)
 JV5175'THE STATION HAS PREVIOUSLY BEEN DESCRIBED AS LOST.  THE M.S.F.C.
 JV5175'REFERENCE MARK WAS FOUND IN GOOD CONDITION.  THE PREVIOUS
 JV5175'DESCRIPTION BY J.A.B. IS ADEQUATE.  THE R.M. IS ALSO REFERENCED TO
 JV5175'PARK, 1933.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5194 ***********************************************************************
 JV5194  DESIGNATION -  IRON 2 RM
 JV5194  PID         -  JV5194
 JV5194  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5194  COUNTRY     -  US
 JV5194  USGS QUAD   -  GIBSON ISLAND (2017)
 JV5194
 JV5194                         *CURRENT SURVEY CONTROL
 JV5194  ______________________________________________________________________
 JV5194* NAD 83(1991) POSITION- 39 04 46.20218(N) 076 28 32.50080(W)   ADJUSTED
 JV5194* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 JV5194  ______________________________________________________________________
 JV5194  GEOID HEIGHT    -        -33.217 (meters)                     GEOID18
 JV5194  LAPLACE CORR    -         -2.89  (seconds)                    DEFLEC18
 JV5194  HORZ ORDER      -  THIRD
 JV5194
 JV5194.The horizontal coordinates were established by classical geodetic methods
 JV5194.and adjusted by the National Geodetic Survey in January 1992.
 JV5194
 JV5194.The orthometric height was scaled from a topographic map.
 JV5194
 JV5194.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5194.GEOID18 height accuracy estimate available here.
 JV5194
 JV5194.Click photographs - Photos may exist for this station.
 JV5194
 JV5194.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5194
 JV5194. The following values were computed from the NAD 83(1991) position.
 JV5194
 JV5194;                    North         East     Units Scale Factor Converg.
 JV5194;SPC MD       -   156,961.937   445,365.577   MT  0.99995615   +0 19 44.7
 JV5194;SPC MD       -   514,965.95  1,461,170.23   sFT  0.99995615   +0 19 44.7
 JV5194;UTM  18      - 4,326,635.266   372,357.202   MT  0.99980062   -0 55 49.4
 JV5194
 JV5194!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5194!SPC MD       -   1.00000431  x   0.99995615  =   0.99996046
 JV5194!UTM  18      -   1.00000431  x   0.99980062  =   0.99980493
 JV5194
 JV5194_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ7235726635(NAD 83)
 JV5194
 JV5194                          SUPERSEDED SURVEY CONTROL
 JV5194
 JV5194  NAD 83(1986)-  39 04 46.19815(N)    076 28 32.51136(W) AD(       ) 3
 JV5194  NAD 27      -  39 04 45.80300(N)    076 28 33.65000(W) AD(       ) 3
 JV5194
 JV5194.Superseded values are not recommended for survey control.
 JV5194
 JV5194.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5194.See file dsdata.pdf to determine how the superseded data were derived.
 JV5194
 JV5194_MARKER: Z = SEE DESCRIPTION
 JV5194_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV5194_STAMPING: M.S.F.C.  U.S.C.S.
 JV5194_MARK LOGO: MDSFC
 JV5194_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV5194+STABILITY: SURFACE MOTION
 JV5194
 JV5194  HISTORY     - Date     Condition        Report By
 JV5194  HISTORY     - 1906     MONUMENTED       MDSFC
 JV5194
 JV5194                          STATION DESCRIPTION
 JV5194
 JV5194'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1906
 JV5194'STATION IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5194'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5194'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS
 JV5194'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 5.01
 JV5194'METERS (16.44 FEET FROM STATION IRON 2 MDSFC IN BEARING N 39 DEG
 JV5194'29 MIN W.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3194 ***********************************************************************
 JV3194  DESIGNATION -  IRON BAR BORR
 JV3194  PID         -  JV3194
 JV3194  STATE/COUNTY-  MD/FREDERICK
 JV3194  COUNTRY     -  US
 JV3194  USGS QUAD   -  HARPERS FERRY (2016)
 JV3194
 JV3194                         *CURRENT SURVEY CONTROL
 JV3194  ______________________________________________________________________
 JV3194* NAD 83(1986) POSITION- 39 18 42.     (N) 077 37 38.     (W)   SCALED
 JV3194* NAVD 88 ORTHO HEIGHT -    75.218 (meters)      246.78  (feet) ADJUSTED
 JV3194  ______________________________________________________________________
 JV3194  GEOID HEIGHT    -        -33.056 (meters)                     GEOID18
 JV3194  DYNAMIC HEIGHT  -         75.176 (meters)      246.64  (feet) COMP
 JV3194  MODELED GRAVITY -    980,071.8   (mgal)                       NAVD 88
 JV3194
 JV3194  VERT ORDER      -  SECOND    CLASS 0
 JV3194
 JV3194.The horizontal coordinates were scaled from a map and have
 JV3194.an estimated accuracy of +/- 6 seconds.
 JV3194
 JV3194.The orthometric height was determined by differential leveling and
 JV3194.adjusted by the NATIONAL GEODETIC SURVEY
 JV3194.in June 1991.
 JV3194
 JV3194.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3194.GEOID18 height accuracy estimate available here.
 JV3194
 JV3194.Click photographs - Photos may exist for this station.
 JV3194
 JV3194.The dynamic height is computed by dividing the NAVD 88
 JV3194.geopotential number by the normal gravity value computed on the
 JV3194.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3194.degrees latitude (g = 980.6199 gals.).
 JV3194
 JV3194.The modeled gravity was interpolated from observed gravity values.
 JV3194
 JV3194;                    North         East    Units  Estimated Accuracy
 JV3194;SPC MD       -   182,790.      345,910.      MT  (+/- 180 meters Scaled)
 JV3194
 JV3194_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ734546(NAD 83)
 JV3194
 JV3194                          SUPERSEDED SURVEY CONTROL
 JV3194
 JV3194  NGVD 29 (11/26/84)   75.429  (m)          247.47   (f) ADJUSTED    2 0
 JV3194
 JV3194.Superseded values are not recommended for survey control.
 JV3194
 JV3194.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3194.See file dsdata.pdf to determine how the superseded data were derived.
 JV3194
 JV3194_MARKER: Z = SEE DESCRIPTION
 JV3194_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
 JV3194_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV3194
 JV3194  HISTORY     - Date     Condition        Report By
 JV3194  HISTORY     - UNK      MONUMENTED       BORR
 JV3194  HISTORY     - 1938     GOOD             CGS
 JV3194  HISTORY     - 1944     GOOD             CGS
 JV3194
 JV3194                          STATION DESCRIPTION
 JV3194
 JV3194'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV3194'AT BRUNSWICK.
 JV3194'AT BRUNSWICK, FREDERICK COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JV3194'500 FEET WEST OF THE STATION, AT THE MARYLAND AVENUE CROSSING, 26
 JV3194'FEET WEST OF THE CENTER LINE OF MARYLAND AVENUE, 20 FEET SOUTH
 JV3194'OF THE CENTER LINE OF THE WEST-BOUND MAIN TRACK, BETWEEN THE MAIN
 JV3194'TRACK AND A SIDING, AND 4 INCHES BELOW THE LEVEL OF THE RAILS.
 JV3194'THE TOP OF A 1-1/2-INCH ROUND IRON BAR PROJECTING 4 INCHES ABOVE
 JV3194'GROUND.
 JV3194
 JV3194                          STATION RECOVERY (1944)
 JV3194
 JV3194'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1944
 JV3194'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1401 ***********************************************************************
 JV1401  DESIGNATION -  IRON BOLT
 JV1401  PID         -  JV1401
 JV1401  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV1401  COUNTRY     -  US
 JV1401  USGS QUAD   -  ODENTON (2016)
 JV1401
 JV1401                         *CURRENT SURVEY CONTROL
 JV1401  ______________________________________________________________________
 JV1401* NAD 83(1986) POSITION- 39 03 20.     (N) 076 38 18.     (W)   SCALED
 JV1401* NAVD 88 ORTHO HEIGHT -    33.50  (+/-2cm)      109.9   (feet) VERTCON3
 JV1401  ______________________________________________________________________
 JV1401  GEOID HEIGHT    -        -32.870 (meters)                     GEOID18
 JV1401  VERT ORDER      -  ? (See Below)
 JV1401
 JV1401.The horizontal coordinates were scaled from a map and have
 JV1401.an estimated accuracy of +/- 6 seconds.
 JV1401
 JV1401.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV1401.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV1401
 JV1401.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1401.GEOID18 height accuracy estimate available here.
 JV1401
 JV1401.The vertical order pertains to the NGVD 29 superseded value.
 JV1401
 JV1401.Click photographs - Photos may exist for this station.
 JV1401
 JV1401;                    North         East    Units  Estimated Accuracy
 JV1401;SPC MD       -   154,240.      431,300.      MT  (+/- 180 meters Scaled)
 JV1401
 JV1401_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ582242(NAD 83)
 JV1401
 JV1401                          SUPERSEDED SURVEY CONTROL
 JV1401
 JV1401  NGVD 29 (11/26/84)   33.739  (m)          110.69   (f) ADJUSTED       
 JV1401
 JV1401.Superseded values are not recommended for survey control.
 JV1401
 JV1401.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1401.See file dsdata.pdf to determine how the superseded data were derived.
 JV1401
 JV1401_MARKER: B = BOLT
 JV1401_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1401_SP_SET: FLAGPOLE
 JV1401_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1401
 JV1401  HISTORY     - Date     Condition        Report By
 JV1401  HISTORY     - UNK      MONUMENTED       NONE
 JV1401  HISTORY     - 1938     GOOD             CGS
 JV1401
 JV1401                          STATION DESCRIPTION
 JV1401
 JV1401'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV1401'0.6 MI NE FROM MILLERSVILLE.
 JV1401'ON STATE HIGHWAY 3, AT THE ANNE ARUNDEL COUNTY HIGH SCHOOL, AT
 JV1401'THE SOUTHWEST CORNER OF THE GROUNDS, IN THE TOP OF THE BASE OF A
 JV1401'FLAGPOLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2224 ***********************************************************************
 JV2224  DESIGNATION -  IRON POST BORR
 JV2224  PID         -  JV2224
 JV2224  STATE/COUNTY-  MD/MONTGOMERY
 JV2224  COUNTRY     -  US
 JV2224  USGS QUAD   -  POOLESVILLE (2016)
 JV2224
 JV2224                         *CURRENT SURVEY CONTROL
 JV2224  ______________________________________________________________________
 JV2224* NAD 83(1986) POSITION- 39 13 38.     (N) 077 26 43.     (W)   SCALED
 JV2224* NAVD 88 ORTHO HEIGHT -    87.83  (+/-2cm)      288.2   (feet) VERTCON3
 JV2224  ______________________________________________________________________
 JV2224  GEOID HEIGHT    -        -32.386 (meters)                     GEOID18
 JV2224  VERT ORDER      -  ? (See Below)
 JV2224
 JV2224.The horizontal coordinates were scaled from a map and have
 JV2224.an estimated accuracy of +/- 6 seconds.
 JV2224
 JV2224.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV2224.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV2224
 JV2224.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2224.GEOID18 height accuracy estimate available here.
 JV2224
 JV2224.The vertical order pertains to the NGVD 29 superseded value.
 JV2224
 JV2224.Click photographs - Photos may exist for this station.
 JV2224
 JV2224;                    North         East    Units  Estimated Accuracy
 JV2224;SPC MD       -   173,330.      361,550.      MT  (+/- 180 meters Scaled)
 JV2224
 JV2224_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ889448(NAD 83)
 JV2224
 JV2224                          SUPERSEDED SURVEY CONTROL
 JV2224
 JV2224  NGVD 29 (11/26/84)   88.051  (m)          288.88   (f) ADJUSTED       
 JV2224
 JV2224.Superseded values are not recommended for survey control.
 JV2224
 JV2224.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2224.See file dsdata.pdf to determine how the superseded data were derived.
 JV2224
 JV2224_MARKER: X = CHISELED CROSS
 JV2224_SETTING: 0 = UNSPECIFIED SETTING
 JV2224_SP_SET: IRON POST
 JV2224_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV2224
 JV2224  HISTORY     - Date     Condition        Report By
 JV2224  HISTORY     - UNK      MONUMENTED       BORR
 JV2224  HISTORY     - 1938     GOOD             CGS
 JV2224  HISTORY     - 1953     MARK NOT FOUND   USGS
 JV2224
 JV2224                          STATION DESCRIPTION
 JV2224
 JV2224'DESCRIBED BY COAST AND GEODETIC SURVEY 1938
 JV2224'1.3 MI NW FROM DICKERSON.
 JV2224'1.3 MILES NORTHWEST ALONG THE BALTIMORE AND OHIO FROM THE STATION
 JV2224'AT DICKERSON, MONTGOMERY COUNTY, 350 FEET SOUTHEAST OF BRIDGE
 JV2224'38-A OVER MONOCACY RIVER, 40 FEET SOUTH OF POLE W 37+6, AND
 JV2224'BETWEEN THE NORTH-BOUND AND THE SOUTH-BOUND TRACKS.  THE TOP OF
 JV2224'AN IRON POST MARKED ON TOP WITH A CROSS AND PROJECTING 9 INCHES
 JV2224'ABOVE GROUND.
 JV2224
 JV2224                          STATION RECOVERY (1953)
 JV2224
 JV2224'RECOVERY NOTE BY US GEOLOGICAL SURVEY 1953
 JV2224'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2235 ***********************************************************************
 JV2235  DESIGNATION -  IRON RIVET BORR
 JV2235  PID         -  JV2235
 JV2235  STATE/COUNTY-  MD/FREDERICK
 JV2235  COUNTRY     -  US
 JV2235  USGS QUAD   -  BUCKEYSTOWN (2016)
 JV2235
 JV2235                         *CURRENT SURVEY CONTROL
 JV2235  ______________________________________________________________________
 JV2235* NAD 83(1986) POSITION- 39 14 59.7    (N) 077 28 40.4    (W)   HD_HELD2
 JV2235* NAVD 88 ORTHO HEIGHT -    69.087 (meters)      226.66  (feet) ADJUSTED
 JV2235  ______________________________________________________________________
 JV2235  GEOID HEIGHT    -        -32.538 (meters)                     GEOID18
 JV2235  DYNAMIC HEIGHT  -         69.049 (meters)      226.54  (feet) COMP
 JV2235  MODELED GRAVITY -    980,083.5   (mgal)                       NAVD 88
 JV2235
 JV2235  VERT ORDER      -  FIRST     CLASS II
 JV2235
 JV2235.The horizontal coordinates were established by autonomous hand held GPS
 JV2235.observations and have an estimated accuracy of +/- 10 meters.
 JV2235
 JV2235.The orthometric height was determined by differential leveling and
 JV2235.adjusted by the NATIONAL GEODETIC SURVEY
 JV2235.in June 1991.
 JV2235
 JV2235.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2235.GEOID18 height accuracy estimate available here.
 JV2235
 JV2235.Click photographs - Photos may exist for this station.
 JV2235
 JV2235.The dynamic height is computed by dividing the NAVD 88
 JV2235.geopotential number by the normal gravity value computed on the
 JV2235.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2235.degrees latitude (g = 980.6199 gals.).
 JV2235
 JV2235.The modeled gravity was interpolated from observed gravity values.
 JV2235
 JV2235;                    North         East    Units  Estimated Accuracy
 JV2235;SPC MD       -   175,858.      358,750.      MT  (+/- 10 meters HH2 GPS)
 JV2235
 JV2235_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8617847437(NAD 83)
 JV2235
 JV2235                          SUPERSEDED SURVEY CONTROL
 JV2235
 JV2235  NGVD 29 (11/26/84)   69.308  (m)          227.39   (f) ADJUSTED    1 2
 JV2235
 JV2235.Superseded values are not recommended for survey control.
 JV2235
 JV2235.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2235.See file dsdata.pdf to determine how the superseded data were derived.
 JV2235
 JV2235_MARKER: R = RIVET
 JV2235_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2235_SP_SET: BRIDGE
 JV2235_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2235
 JV2235  HISTORY     - Date     Condition        Report By
 JV2235  HISTORY     - UNK      MONUMENTED       BORR
 JV2235  HISTORY     - 1941     GOOD             CGS
 JV2235
 JV2235                          STATION DESCRIPTION
 JV2235
 JV2235'DESCRIBED BY COAST AND GEODETIC SURVEY 1941
 JV2235'AT TUSCARORA.
 JV2235'AT TUSCARORA, FREDERICK COUNTY, ON THE BALTIMORE AND OHIO RAILROAD,
 JV2235'700 FEET NORTHWEST OF THE STATION, AT BRIDGE 40-B OVER TUSCARORA
 JV2235'CREEK, IN THE SOUTHEAST CORNER OF THE CONCRETE ABUTMENT, 7 FEET
 JV2235'NORTHEAST OF THE CENTER LINE OF THE NORTH-BOUND TRACK, 1 FOOT
 JV2235'WEST OF THE HEAD OF THE RETAINING WALL, AND 1 FOOT BELOW THE LEVEL
 JV2235'OF THE RAILS.  AN IRON RIVET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4535 ***********************************************************************
 JV4535  DESIGNATION -  IRON STONE RIDGE 1865
 JV4535  PID         -  JV4535
 JV4535  STATE/COUNTY-  MD/MONTGOMERY
 JV4535  COUNTRY     -  US
 JV4535  USGS QUAD   -  POOLESVILLE (2016)
 JV4535
 JV4535                         *CURRENT SURVEY CONTROL
 JV4535  ______________________________________________________________________
 JV4535* NAD 83(1993) POSITION- 39 10 53.08934(N) 077 26 28.95779(W)   ADJUSTED
 JV4535* NAVD 88 ORTHO HEIGHT -   143.0   (meters)      469.    (feet) VERTCON3
 JV4535  ______________________________________________________________________
 JV4535  GEOID HEIGHT    -        -32.260 (meters)                     GEOID18
 JV4535  LAPLACE CORR    -          6.45  (seconds)                    DEFLEC18
 JV4535  HORZ ORDER      -  SECOND
 JV4535
 JV4535.The horizontal coordinates were established by classical geodetic methods
 JV4535.and adjusted by the National Geodetic Survey in November 1994.
 JV4535
 JV4535.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4535.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4535
 JV4535.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4535.GEOID18 height accuracy estimate available here.
 JV4535
 JV4535.Click photographs - Photos may exist for this station.
 JV4535
 JV4535.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4535
 JV4535. The following values were computed from the NAD 83(1993) position.
 JV4535
 JV4535;                    North         East     Units Scale Factor Converg.
 JV4535;SPC MD       -   168,237.584   361,864.432   MT  0.99996404   -0 16 37.3
 JV4535;SPC MD       -   551,959.47  1,187,216.89   sFT  0.99996404   -0 16 37.3
 JV4535;UTM  18      - 4,339,747.915   289,124.760   MT  1.00014757   -1 32 34.7
 JV4535
 JV4535!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4535!SPC MD       -   0.99998263  x   0.99996404  =   0.99994667
 JV4535!UTM  18      -   0.99998263  x   1.00014757  =   1.00013020
 JV4535
 JV4535_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8912439747(NAD 83)
 JV4535
 JV4535                          SUPERSEDED SURVEY CONTROL
 JV4535
 JV4535  NAD 83(1991)-  39 10 53.08981(N)    077 26 28.95794(W) AD(       ) 2
 JV4535  NAD 83(1986)-  39 10 53.08895(N)    077 26 28.96828(W) AD(       ) 2
 JV4535  NAD 27      -  39 10 52.70770(N)    077 26 30.00194(W) AD(       ) 2
 JV4535  USSD        -  39 10 52.64000(N)    077 26 29.75000(W) AD(       ) 3
 JV4535  NGVD 29 (07/19/86)  143.2    (m)          470.     (f) VERT ANG       
 JV4535
 JV4535.Superseded values are not recommended for survey control.
 JV4535
 JV4535.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4535.See file dsdata.pdf to determine how the superseded data were derived.
 JV4535
 JV4535_MARKER: H = DRILL HOLE
 JV4535_SETTING: 80 = SET IN A BOULDER
 JV4535_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4535+STABILITY: SURFACE MOTION
 JV4535
 JV4535  HISTORY     - Date     Condition        Report By
 JV4535  HISTORY     - 1865     MONUMENTED       COASUR
 JV4535  HISTORY     - 1943     MARK NOT FOUND   CGS
 JV4535  HISTORY     - 1970     SEE DESCRIPTION  NGS
 JV4535
 JV4535                          STATION DESCRIPTION
 JV4535
 JV4535'DESCRIBED BY COAST SURVEY (CGS) 1865 (JAS)
 JV4535'A DRILL HOLE IN BOULDER MARKS THE STATION.
 JV4535
 JV4535                          STATION RECOVERY (1943)
 JV4535
 JV4535'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4535'THIS STATION HAS EVIDENTLY BEEN DESTROYED.  A NEW STATION, IRON
 JV4535'STONE RIDGE 2, WAS ESTABLISHED.  AN INVERSE POSITION COMPUTATION
 JV4535'WAS MADE AND A THOROUGH SEARCH WAS MADE FOR THE OLD STATION.
 JV4535
 JV4535                          STATION RECOVERY (1970)
 JV4535
 JV4535'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (JBJ)
 JV4535'A 1 INCH WIDE BY 1 INCH DEEP DRILL HOLE WAS RECOVERED IN A 1 FOOT
 JV4535'BY 1-1/2 FOOT BOULDER THAT PROJECTS 8 INCHES ABOVE THE GROUND.  THE
 JV4535'DRILLHOLE IS IN THE EXTREME EAST END OF THE BOULDER AND HAS A
 JV4535'CRACK RUNNING THROUGH IT.
 JV4535'
 JV4535'IT IS 110.38 FEET OR 33.644 METERS SOUTHEAST OF STATION IRON
 JV4535'STONE RIDGE 2 1943.  THESE DISTANCES ARE THE RESULT OF A SECOND
 JV4535'ORDER TRAVERSE.
 JV4535'
 JV4535'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
 JV4535'1-1/2 MILES WEST OF BEALLSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4540 ***********************************************************************
 JV4540  DESIGNATION -  IRON STONE RIDGE 2
 JV4540  PID         -  JV4540
 JV4540  STATE/COUNTY-  MD/MONTGOMERY
 JV4540  COUNTRY     -  US
 JV4540  USGS QUAD   -  POOLESVILLE (2016)
 JV4540
 JV4540                         *CURRENT SURVEY CONTROL
 JV4540  ______________________________________________________________________
 JV4540* NAD 83(1993) POSITION- 39 10 54.13237(N) 077 26 29.36880(W)   ADJUSTED
 JV4540* NAVD 88 ORTHO HEIGHT -   141.5   (meters)      464.    (feet) VERTCON3
 JV4540  ______________________________________________________________________
 JV4540  GEOID HEIGHT    -        -32.261 (meters)                     GEOID18
 JV4540  LAPLACE CORR    -          6.46  (seconds)                    DEFLEC18
 JV4540  HORZ ORDER      -  FIRST
 JV4540
 JV4540.The horizontal coordinates were established by classical geodetic methods
 JV4540.and adjusted by the National Geodetic Survey in November 1994.
 JV4540
 JV4540.The NAVD 88 height was computed by applying the VERTCON shift value to
 JV4540.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JV4540
 JV4540.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4540.GEOID18 height accuracy estimate available here.
 JV4540
 JV4540.Click photographs - Photos may exist for this station.
 JV4540
 JV4540.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV4540
 JV4540. The following values were computed from the NAD 83(1993) position.
 JV4540
 JV4540;                    North         East     Units Scale Factor Converg.
 JV4540;SPC MD       -   168,269.796   361,854.724   MT  0.99996406   -0 16 37.5
 JV4540;SPC MD       -   552,065.16  1,187,185.04   sFT  0.99996406   -0 16 37.5
 JV4540;UTM  18      - 4,339,780.340   289,115.764   MT  1.00014761   -1 32 35.0
 JV4540
 JV4540!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV4540!SPC MD       -   0.99998286  x   0.99996406  =   0.99994692
 JV4540!UTM  18      -   0.99998286  x   1.00014761  =   1.00013047
 JV4540
 JV4540:                Primary Azimuth Mark                     Grid Az
 JV4540:SPC MD       -  IRON STONE RIDGE 2 AZ MK 2               270 08 02.1
 JV4540:UTM  18      -  IRON STONE RIDGE 2 AZ MK 2               271 23 59.6
 JV4540
 JV4540_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ8911539780(NAD 83)
 JV4540
 JV4540|---------------------------------------------------------------------|
 JV4540| PID    Reference Object                     Distance      Geod. Az  |
 JV4540|                                                           dddmmss.s |
 JV4540| CK7544 IRON STONE RIDGE 2 RM 1              26.642 METERS 05058     |
 JV4540| JV4544 POOLESVILLE ST PETERS EPIS CH       APPROX. 4.4 KM 1535750.1 |
 JV4540| JV4535 IRON STONE RIDGE 1865                33.644 METERS 16257     |
 JV4540| JV4546 ELMER ANIMAL CTR TANK               APPROX. 6.9 KM 2081404.2 |
 JV4540| CK7543 IRON STONE RIDGE 2 AZ MK 2                         2695124.6 |
 JV4540| CK7542 IRON STONE RIDGE 2 AZ MK                           2930432.2 |
 JV4540| CK7545 IRON STONE RIDGE 2 RM 2              23.080 METERS 32550     |
 JV4540| JV4542 DICKERSON PEPCO W STACK             APPROX. 3.6 KM 3272320.6 |
 JV4540| JV4541 DICKERSON PEPCO E STACK             APPROX. 3.7 KM 3281610.2 |
 JV4540|---------------------------------------------------------------------|
 JV4540
 JV4540                          SUPERSEDED SURVEY CONTROL
 JV4540
 JV4540  NAD 83(1991)-  39 10 54.13283(N)    077 26 29.36895(W) AD(       ) 1
 JV4540  NAD 83(1986)-  39 10 54.13197(N)    077 26 29.37929(W) AD(       ) 1
 JV4540  NAD 27      -  39 10 53.75074(N)    077 26 30.41293(W) AD(       ) 1
 JV4540  NGVD 29 (07/19/86)  141.7    (m)          465.     (f) VERT ANG       
 JV4540
 JV4540.Superseded values are not recommended for survey control.
 JV4540
 JV4540.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4540.See file dsdata.pdf to determine how the superseded data were derived.
 JV4540
 JV4540_MARKER: DS = TRIANGULATION STATION DISK
 JV4540_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV4540_STAMPING: IRON STONE RIDGE 2 1943
 JV4540_MARK LOGO: CGS
 JV4540_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV4540+STABILITY: SURFACE MOTION
 JV4540
 JV4540  HISTORY     - Date     Condition        Report By
 JV4540  HISTORY     - 1943     MONUMENTED       CGS
 JV4540  HISTORY     - 1958     GOOD             CGS
 JV4540  HISTORY     - 1969     GOOD             CGS
 JV4540
 JV4540                          STATION DESCRIPTION
 JV4540
 JV4540'DESCRIBED BY COAST AND GEODETIC SURVEY 1943 (GWL)
 JV4540'THE STATION IS LOCATED ON A SMALL ROUND TIMBER-TOPPED HILL ABOUT
 JV4540'2 MILES W OF BEALLSVILLE, NEAR WHAT IS BELIEVED TO BE THE SITE
 JV4540'OF STATION IRON STONE RIDGE 1865 AND ON LAND OWNED BY
 JV4540'A.L. DONALDSON.  IT IS AT THE HIGHEST POINT OF THE HILL, 25 FEET
 JV4540'E OF A TRIANGULAR-BLAZED 10-INCH TREE, 30 FEET S OF AN 18-INCH
 JV4540'TRIANGULAR-BLAZED TREE AND 65 FEET S OF A BRICK-TOPPED
 JV4540'RESERVOIR.  IT PROJECTS 4 INCHES AND THE DISK IS STAMPED IRON
 JV4540'STONE RIDGE 2 1943.
 JV4540'
 JV4540'SURFACE, UNDERGROUND, REFERENCE, AND AZIMUTH MARKS ARE BRONZE
 JV4540'DISKS SET IN CONCRETE.
 JV4540'
 JV4540'REFERENCE MARK NO. 1 IS ENE OF THE STATION.  IT PROJECTS 4
 JV4540'INCHES AND THE DISK IS STAMPED IRON STONE RIDGE NO.1 1943.
 JV4540'
 JV4540'REFERENCE MARK NO. 2 IS NW OF THE STATION.  IT PROJECTS 4 INCHES
 JV4540'AND THE DISK IS STAMPED IRON STONE RIDGE NO.2 1943.
 JV4540'
 JV4540'THE AZIMUTH MARK IS LOCATED 0.2 MILE W OF THE STATION.  IT IS
 JV4540'16 FEET E OF THE CENTER OF THE DIRT ROAD AND AT THE POINT WHERE
 JV4540'THE ROUTE TO THE STATION TURNS INTO THE FARM LANE.  IT PROJECTS
 JV4540'6 INCHES AND THE DISK IS STAMPED IRON STONE RIDGE 2 1943.
 JV4540'
 JV4540'TO REACH THE STATION FROM BEALLSVILLE GO WESTERLY ON STATE
 JV4540'HIGHWAY 28 FOR 0.05 MILE TO A GRAVEL ROAD LEFT AT A SLOPING
 JV4540'STONE WALL.  TURN LEFT ON GRAVEL ROAD AND GO 1.7 MILES TO A
 JV4540'T-INTERSECTION.  TURN RIGHT AND GO 0.3 MILE TO A FARM LANE.  TURN
 JV4540'RIGHT INTO FARM LANE FOR ABOUT 200 YARDS TO THE W LAWN FENCE.
 JV4540'TURN RIGHT (SOUTHERLY) THEN SE KEEPING ALONG THE EDGE OF THE
 JV4540'CULTIVATED FIELD TO A POLE GATE AT THE NW CORNER OF FIELD.  PASS
 JV4540'THROUGH GATE AND BEAR RIGHT TO THE HIGHEST POINT OF THE HILL AND
 JV4540'THE STATION.
 JV4540'
 JV4540'A 90-FOOT TOWER WILL SEE A 74-FOOT LIGHT AT SCHOLLS HILL 2.
 JV4540'
 JV4540'A 90-FOOT TOWER WILL SEE A 113-FOOT LIGHT AT COMUS.
 JV4540'
 JV4540'A 103-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT HEAP.
 JV4540'
 JV4540'A 90-FOOT TOWER WILL SEE AN 87-FOOT LIGHT AT POOLESVILLE 2 1943.
 JV4540'
 JV4540'A 4-FOOT STAND WILL SEE AN 87-FOOT LIGHT AT OXLEYS HILL 2 1943.
 JV4540'
 JV4540'IRON STONE RIDGE 1865 WAS SEARCHED FOR BUT COULD NOT BE FOUND.
 JV4540'
 JV4540'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JV4540
 JV4540                          STATION RECOVERY (1958)
 JV4540
 JV4540'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (WER)
 JV4540'THE STATION MARK, AZIMUTH MARK AND REFERENCE MARKS 1 AND 2 WERE
 JV4540'RECOVERED AS DESCRIBED AND IN GOOD CONDITION.
 JV4540'
 JV4540'DISTANCES TO THE REFERENCE MARKS WERE CHECKED.
 JV4540'
 JV4540'THE STATION IS NOW ON THE PROPERTY OF MR. HARRY LEET OF GAITHERSBURG,
 JV4540'MARYLAND.
 JV4540'
 JV4540'NOTE--THE TO REACH IS ENTIRELY ADEQUATE.
 JV4540
 JV4540                          STATION RECOVERY (1969)
 JV4540
 JV4540'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JBJ)
 JV4540'THE STATION MARK AND REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD
 JV4540'CONDITION.  THE AZIMUTH MARK COULD NOT BE FOUND AND A NEW AZIMUTH
 JV4540'MARK WAS SET.  FOLLOWING IS A NEW DESCRIPTION.
 JV4540'
 JV4540'THE STATION IS ABOUT 3 MILES NORTHWEST OF POOLESVILLE, 2 MILES
 JV4540'SOUTHEAST OF THE POTOMAC RIVER, 1-1/2 MILES WEST OF BEALLSVILLE, ON
 JV4540'THE HIGHEST POINT IN THE IMMEDIATE VICINITY, AND ON PROPERTY OWNED
 JV4540'BY CHARLES R. COVER.
 JV4540'
 JV4540'TO REACH THE STATION FROM THE POST OFFICE IN BEALLSVILLE, GO
 JV4540'NORTHWEST ON STATE HIGHWAY 28 FOR 0.05 MILE TO A SIDE ROAD LEFT,
 JV4540'HUNTER ROAD.  TURN LEFT AND GO WESTERLY ON HUNTER ROAD FOR 1.25
 JV4540'MILE TO A FIELD ENTRANCE ON THE RIGHT.  (TO REACH THE AZIMUTH
 JV4540'MARK FROM THIS POINT, CONTINUE WESTERLY ON HUNTER ROAD FOR 0.35
 JV4540'MILE TO A T-ROAD, WASCHE ROAD.  TURN RIGHT AND GO NORTH ON WASCHE
 JV4540'ROAD FOR 0.3 MILE TO THE MARK ON THE LEFT.) TURN RIGHT, THEN LEFT,
 JV4540'AND GO WESTERLY ALONG A FENCE FOR 0.1 MILE TO THE EDGE OF THE
 JV4540'WOODS.  TURN RIGHT AND GO NORTH, THEN WEST, THEN NORTH FOR 0.25 MILE
 JV4540'TO A TRACK ROAD ON THE LEFT LEADING INTO THE WOODS.  TURN LEFT
 JV4540'AND GO WEST THROUGH THE WOODS FOR 0.05 MILE TO WHERE THE TRACK ROAD
 JV4540'TURNS LEFT.  TURN LEFT AND GO SOUTHWEST FOR 0.05 MILE TO AN OLD
 JV4540'CISTERN AND THE STATION ON THE HIGHEST POINT OF THE HILL.
 JV4540'
 JV4540'THE STATION MARK IS A STANDARD DISK, STAMPED IRON STONE RIDGE 2 1943,
 JV4540'SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST, THAT PROJECTS 6
 JV4540'INCHES ABOVE THE GROUND.  IT IS 64.4 FEET SOUTH OF THE CENTER OF AN
 JV4540'OLD BRICK CISTERN, 26.2 FEET SOUTH OF A TREE WITH A TRIANGLE BLAZE
 JV4540'ON THE SOUTH SIDE, AND 21.0 FEET SOUTHWEST OF A TREE WITH A TRIANGLE
 JV4540'BLAZE ON THE WEST SIDE.
 JV4540'
 JV4540'REFERENCE MARK 1 IS A STANDARD DISK, STAMPED IRON STONE RIDGE 2 NO 1
 JV4540'1943, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST, THAT
 JV4540'PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 69.0 FEET NORTHEAST OF
 JV4540'THE TREE WITH THE TRIANGLE BLAZE ON THE WEST SIDE, 67.4 FEET EAST OF
 JV4540'THE CISTERN, 15.0 FEET SOUTHEAST OF THE CENTERLINE OF THE TRACK
 JV4540'ROAD, AND ABOUT 1 FOOT LOWER IN ELEVATION THAN THE STATION.
 JV4540'
 JV4540'REFERENCE MARK 2 IS A STANDARD DISK, STAMPED IRON STONE RIDGE 2 NO 2
 JV4540'1943, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE POST, THAT
 JV4540'PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 60.0 FEET NORTHWEST OF
 JV4540'THE TREE WITH THE TRIANGLE BLAZE ON THE SOUTH SIDE, 44.2 FEET WEST OF
 JV4540'THE CISTERN, AND ABOUT 3 FEET LOWER IN ELEVATION THAN THE STATION.
 JV4540'
 JV4540'THE AZIMUTH MARK IS A STANDARD DISK, STAMPED IRON STONE RIDGE 2 NO 2
 JV4540'1943 1969, SET IN THE TOP OF A ROUND CONCRETE POST, 12 INCHES IN
 JV4540'DIAMETER, THAT PROJECTS 4 INCHES ABOVE THE GROUND.  IT IS 65.9 FEET
 JV4540'SOUTHWEST OF A POWERLINE POLE, 26.5 FEET WEST OF THE CENTERLINE OF
 JV4540'WASCHE ROAD, 2.3 FEET SOUTH OF A WITNESS POST, AND 0.9 FEET EAST
 JV4540'OF A BOARD FENCE.
 JV4540'
 JV4540'THE DISTANCE BETWEEN REFERENCE MARKS COULD NOT BE MEASURED DUE TO
 JV4540'OBSTRUCTIONS.
 JV4540'
 JV4540'AN INVERSE COMPUTATION WAS MADE AND A BOULDER CONTAINING A DRILL HOLE
 JV4540'WAS FOUND.  ALTHOUGH THE BOULDER WAS CHIPPED AND CRACKED IT IS
 JV4540'BELIEVED TO BE THE ORIGINAL STATION, IRON STONE RIDGE 1865.
 JV4540'
 JV4540'THE DRILL HOLE IS 1 INCH IN DIAMETER AND 1 INCH DEEP IN THE EAST END
 JV4540'OF A 1 FOOT BY 1-1/2 FOOT BOULDER, THAT PROJECTS 8 INCHES ABOVE THE
 JV4540'GROUND.
 JV4540'
 JV4540'RESULTS OF A SECOND ORDER TRAVERSE.
 JV4540'
 JV4540'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--1-1/2 MILES WEST OF
 JV4540'BEALLSVILLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3959 ***********************************************************************
 JU3959  DESIGNATION -  IRWIN
 JU3959  PID         -  JU3959
 JU3959  STATE/COUNTY-  MD/CECIL
 JU3959  COUNTRY     -  US
 JU3959  USGS QUAD   -  BAY VIEW (2016)
 JU3959
 JU3959                         *CURRENT SURVEY CONTROL
 JU3959  ______________________________________________________________________
 JU3959* NAD 83(1991) POSITION- 39 43 13.97567(N) 075 56 07.03312(W)   ADJUSTED
 JU3959* NAVD 88 ORTHO HEIGHT -   139.87  (+/-2cm)      458.9   (feet) VERTCON3
 JU3959  ______________________________________________________________________
 JU3959  GEOID HEIGHT    -        -33.016 (meters)                     GEOID18
 JU3959  LAPLACE CORR    -         -0.19  (seconds)                    DEFLEC18
 JU3959  HORZ ORDER      -  FIRST
 JU3959  VERT ORDER      -  THIRD ? (See Below)
 JU3959
 JU3959.The horizontal coordinates were established by classical geodetic methods
 JU3959.and adjusted by the National Geodetic Survey in January 1992.
 JU3959
 JU3959.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3959.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3959
 JU3959.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3959.GEOID18 height accuracy estimate available here.
 JU3959
 JU3959.The vertical order pertains to the NGVD 29 superseded value.
 JU3959
 JU3959.Click photographs - Photos may exist for this station.
 JU3959
 JU3959.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3959
 JU3959. The following values were computed from the NAD 83(1991) position.
 JU3959
 JU3959;                    North         East     Units Scale Factor Converg.
 JU3959;SPC MD       -   228,535.001   491,292.769   MT  1.00005854   +0 40 05.7
 JU3959;SPC MD       -   749,785.25  1,611,849.69   sFT  1.00005854   +0 40 05.7
 JU3959;SPC PA S     -    44,593.366   755,590.486   MT  1.00004008   +1 10 38.5
 JU3959;SPC PA S     -   146,303.40  2,478,966.45   sFT  1.00004008   +1 10 38.5
 JU3959;UTM  18      - 4,397,159.744   419,839.032   MT  0.99967911   -0 35 51.8
 JU3959
 JU3959!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3959!SPC MD       -   0.99998324  x   1.00005854  =   1.00004178
 JU3959!SPC PA S     -   0.99998324  x   1.00004008  =   1.00002332
 JU3959!UTM  18      -   0.99998324  x   0.99967911  =   0.99966235
 JU3959
 JU3959:                Primary Azimuth Mark                     Grid Az
 JU3959:SPC MD       -  IRWIN AZ MK                              189 18 40.6
 JU3959:SPC PA S     -  IRWIN AZ MK                              188 48 07.8
 JU3959:UTM  18      -  IRWIN AZ MK                              190 34 38.1
 JU3959
 JU3959_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1983997159(NAD 83)
 JU3959
 JU3959|---------------------------------------------------------------------|
 JU3959| PID    Reference Object                     Distance      Geod. Az  |
 JU3959|                                                           dddmmss.s |
 JU3959| CB2119 IRWIN RM 1                          153.470 METERS 00132     |
 JU3959| CB2120 IRWIN RM 2                           45.179 METERS 08652     |
 JU3959| JU3837 WASHINGTON NY AWY BCN 64            APPROX.18.1 KM 1200727.4 |
 JU3959| CB2118 IRWIN AZ MK                                        1895846.3 |
 JU3959|---------------------------------------------------------------------|
 JU3959
 JU3959                          SUPERSEDED SURVEY CONTROL
 JU3959
 JU3959  NAD 83(1986)-  39 43 13.97005(N)    075 56 07.03991(W) AD(       ) 1
 JU3959  NAD 27      -  39 43 13.57900(N)    075 56 08.24400(W) AD(       ) 1
 JU3959  NGVD 29             140.18   (m)          459.9    (f) LEVELING    3  
 JU3959
 JU3959.Superseded values are not recommended for survey control.
 JU3959
 JU3959.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3959.See file dsdata.pdf to determine how the superseded data were derived.
 JU3959
 JU3959_MARKER: DS = TRIANGULATION STATION DISK
 JU3959_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3959_STAMPING: IRWIN 1935
 JU3959_MARK LOGO: CGS
 JU3959_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3959+STABILITY: SURFACE MOTION
 JU3959
 JU3959  HISTORY     - Date     Condition        Report By
 JU3959  HISTORY     - 1935     MONUMENTED       CGS
 JU3959  HISTORY     - 1938     GOOD             CGS
 JU3959  HISTORY     - 1942     MARK NOT FOUND   USACE
 JU3959  HISTORY     - 1958     SEE DESCRIPTION  CGS
 JU3959  HISTORY     - 1966     GOOD             CGS
 JU3959
 JU3959                          STATION DESCRIPTION
 JU3959
 JU3959'DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (JB)
 JU3959'STATION IS LOCATED 153 METERS S OF MASON-DIXON LINE BETWEEN
 JU3959'PENNSYLVANIA AND MARYLAND, 4-1/2 MILES SE OF OXFORD, PENNSYLVANIA,
 JU3959'2-3/4 MILES NE OF CALVERT, MARYLAND, 10 MILES WNW OF NEWARK,
 JU3959'DELAWARE.  IT IS ON THE IRWIN ESTATE (CHARLES IRWIN,
 JU3959'ADMINISTRATOR), 50 YARDS E OF BARN, ON N SIDE AND ON FENCE LINE OF
 JU3959'ORCHARD.  MARK SET 3 INCHES UNDERGROUND.
 JU3959'
 JU3959'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD
 JU3959'BRONZE DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1A, 7A, AND 11A.
 JU3959'
 JU3959'REFERENCE MARK NO.1 IS 153.47 METERS (503.52 FEET) N OF STATION
 JU3959'ON HEDGEROW WHICH IS ON MASON-DIXON LINE, PROJECTS 8 INCHES.
 JU3959'
 JU3959'REFERENCE MARK NO.2 IS 45.179 METERS (148.23 FEET) E OF STATION,
 JU3959'1 FOOT S OF FENCE, 4 FEET N OF 16-INCH APPLE TREE, PROJECTS 10
 JU3959'INCHES.
 JU3959'
 JU3959'AZIMUTH MARK IS 0.3 MILE SSW OF STATION, 5 PACES W OF CENTER OF
 JU3959'DIRT ROAD, 14 PACES N OF A DIRT T-ROAD E, AT TOP OF A 5-FOOT
 JU3959'SLOPING ROADWAY CUT BANK, AND ON FENCE LINE, PROJECTS 4 INCHES.
 JU3959'
 JU3959'TO REACH STATION FROM OXFORD, PENNSYLVANIA, GO S ON U.S. HIGHWAY
 JU3959'1 FOR 1.3 MILES TO A CURVE RIGHT, HERE CONTINUE STRAIGHT AHEAD
 JU3959'ON ROUTE 42 (MACADAM) FOR 2.8 MILES TO CROSSROADS.  TURN LEFT ON
 JU3959'MACADAM ROAD AND GO 2.9 MILES TO REVERSED Y, TURN SHARP RIGHT ON
 JU3959'DIRT ROAD AND GO 0.4 MILE TO CROSS ROAD ON MASON-DIXON LINE, TURN
 JU3959'LEFT AND GO TO TOP OF HILL, TURN IN DRIVE OF FIRST HOUSE ON
 JU3959'LEFT, FOLLOW ROAD TO LEFT OF BARN AND ALONG N SIDE OF ORCHARD TO
 JU3959'STATION.  THIS IS A FIRST-ORDER STATION.
 JU3959'
 JU3959'A 90-FOOT TOWER USED.  NO CUTS VISIBLE FROM THE GROUND.
 JU3959'
 JU3959'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JU3959
 JU3959                          STATION RECOVERY (1938)
 JU3959
 JU3959'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1938 (FLG)
 JU3959'THE STATION AND REFERENCE MARKS WERE RECOVERD IN GOOD
 JU3959'CONDITION.  THE DESCRIPTION WAS FOUND TO BE COMPLETE.  ON OCTOBER
 JU3959'31, 1938 THE STATION MARK AND REFERENCE MARK NO.2 WERE DROPPED
 JU3959'VERTICALLY DOWNWARD SO THAT THE TOP OF EACH IS 1-1/2 FEET BELOW
 JU3959'THE SURFACE OF THE GROUND.  THESE MARKS WERE MOVED BECAUSE THE
 JU3959'PRESENT OWNER (FRANK D. DURBOROW) PLANS TO CONVERT THE ORCHARD
 JU3959'INTO A CORN FIELD.  ADDITIONAL MEASUREMENTS WERE TAKEN AS
 JU3959'FOLLOWS--STATION IS 136.55 METERS E OF THE CENTER LINE OF THE
 JU3959'SAND-CLAY ROAD.  111.77 METERS E OF SE CORNER OF STUCCO
 JU3959'HOUSE.  3.65 METERS S OF CENTER LINE OF TOPSOIL ROAD.  60.45 METERS
 JU3959'E OF A POINT THAT IS LOCATED AS FOLLOWS--ON LINE BETWEEN NE
 JU3959'CORNER OF BARN WITH STONE FOUNDATION AND LINCOLN UNIVERSITY
 JU3959'WATER TANK, 12.90 METERS FROM NE CORNER OF BARN, 22.37
 JU3959'METERS FROM NW CORNER OF BARN, 51.32 METERS FROM SE CORNER OF
 JU3959'STUCCO HOUSE, AT THIS POINT THE ANGLE BETWEEN LINCOLN
 JU3959'UNIVERSITY WATER TANK AND STATION IS 81 DEG 15 MIN.
 JU3959'
 JU3959'REFERENCE MARK NO.2 IS 2.0 METERS S OF FENCE, 4.2 METERS S OF
 JU3959'CENTER LINE OF TOPSOIL ROAD.
 JU3959
 JU3959                          STATION RECOVERY (1942)
 JU3959
 JU3959'RECOVERY NOTE BY US ARMY CORPS OF ENGINEERS 1942
 JU3959'STATION SEARCHED FOR BUT NOT RECOVERED.  SURFACE MARK AND R.M. 2
 JU3959'ARE GONE.  AZIMUTH MARK AND R.M. 1 RECOVERED IN GOOD
 JU3959'CONDITION.  SUBSURFACE MARK CANNOT BE LOCATED WITH PRESENT
 JU3959'DESCRIPTION.
 JU3959
 JU3959                          STATION RECOVERY (1958)
 JU3959
 JU3959'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3959'STATION AND AZIMUTH MARK WAS RECOVERED AND FOUND IN GOOD
 JU3959'CONDITION.  A LARGE TURKEY SHED HAS BEEN BUILT OVER THE STATION
 JU3959'MARK AND IT WAS IMPOSSIBLE TO OCCUPY THE STATION.  THEREFORE
 JU3959'IRWIN 2 WAS ESTABLISHED.
 JU3959'
 JU3959'A TRAVERSE CONNECTION WAS MADE TO IRWIN 2 AND THE DISTANCE IS
 JU3959'44.963 METERS OR 147.52 FEET.
 JU3959'
 JU3959'STATION IS 118-1/2 FEET EAST OF WEST END OF TURKEY SHED, 85-1/2
 JU3959'FEET WEST OF EAST END OF TURKEY SHED AND 7-1/2 FEET SOUTH OF NORTH
 JU3959'WALL OF SHED.  THE MARK IS A STANDARD DISK SET IN A CONCRETE
 JU3959'MONUMENT ABOUT 1 FOOT BELOW THE SURFACE OF THE GROUND AND THE
 JU3959'DISK IS STAMPED IRWIN 1935.  NOTE 1A 7A.
 JU3959'
 JU3959'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JU3959'HIGHWAY NO. 272 WHICH IS ABOUT 1.0 MILE NORTH OF NORTH EAST, GO
 JU3959'NORTH ON STATE HIGHWAY NO. 272 FOR 2.7 MILES TO JUNCTION OF STATE
 JU3959'HIGHWAY NO. 274.  TAKE RIGHT FORK AND GO NORTHERLY ON STATE
 JU3959'HIGHWAY NO. 272 FOR 4.8 MILES TO JUNCTION OF STATE HIGHWAY
 JU3959'NO. 273.  TURN RIGHT AND GO EASTERLY ON STATE HIGHWAY NO. 273
 JU3959'FOR 2.65 MILE TO CROSS ROADS AT THE VILLAGE OF BLUE BALL, TURN
 JU3959'LEFT AND GO NORTHERLY ON SURFACED ROAD FOR 0.95 MILE TO
 JU3959'FORKS.  TAKE RIGHT FORK AND GO NORTHERLY ON GRAVEL ROAD FOR
 JU3959'0.15 MILE TO AZIMUTH MARK ON LEFT IN FENCELINE.  CONTINUE
 JU3959'NORTHERLY ON GRAVELED ROAD FOR 0.3 MILE TO DRIVEWAY RIGHT AT
 JU3959'FARM HOUSE.  TURN RIGHT AND GO EASTERLY ON DRIVEWAY
 JU3959'FOR 0.05 MILE TO TURKEY SHED AND STATION AS DESCRIBED.
 JU3959
 JU3959                          STATION RECOVERY (1966)
 JU3959
 JU3959'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (ELH)
 JU3959'THE STATION MARK WAS RECOVERED AS DESCRIBED IN 1958, NO DISTANCE
 JU3959'OR DIRECTION WAS MADE AT THIS TIME DUE TO THE TURKEY SHED THAT
 JU3959'IS BUILT OVER THE MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3960 ***********************************************************************
 JU3960  DESIGNATION -  IRWIN 2
 JU3960  PID         -  JU3960
 JU3960  STATE/COUNTY-  MD/CECIL
 JU3960  COUNTRY     -  US
 JU3960  USGS QUAD   -  BAY VIEW (2016)
 JU3960
 JU3960                         *CURRENT SURVEY CONTROL
 JU3960  ______________________________________________________________________
 JU3960* NAD 83(1991) POSITION- 39 43 13.18946(N) 075 56 08.62293(W)   ADJUSTED
 JU3960* NAVD 88 ORTHO HEIGHT -   139.5   (meters)      458.    (feet) VERTCON3
 JU3960  ______________________________________________________________________
 JU3960  GEOID HEIGHT    -        -33.016 (meters)                     GEOID18
 JU3960  LAPLACE CORR    -         -0.20  (seconds)                    DEFLEC18
 JU3960  HORZ ORDER      -  SECOND
 JU3960
 JU3960.The horizontal coordinates were established by classical geodetic methods
 JU3960.and adjusted by the National Geodetic Survey in January 1992.
 JU3960
 JU3960.The NAVD 88 height was computed by applying the VERTCON shift value to
 JU3960.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
 JU3960
 JU3960.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3960.GEOID18 height accuracy estimate available here.
 JU3960
 JU3960.Click photographs - Photos may exist for this station.
 JU3960
 JU3960.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3960
 JU3960. The following values were computed from the NAD 83(1991) position.
 JU3960
 JU3960;                    North         East     Units Scale Factor Converg.
 JU3960;SPC MD       -   228,510.312   491,255.188   MT  1.00005848   +0 40 04.7
 JU3960;SPC MD       -   749,704.25  1,611,726.40   sFT  1.00005848   +0 40 04.7
 JU3960;SPC PA S     -    44,568.344   755,553.126   MT  1.00004013   +1 10 37.5
 JU3960;SPC PA S     -   146,221.31  2,478,843.88   sFT  1.00004013   +1 10 37.5
 JU3960;UTM  18      - 4,397,135.900   419,800.929   MT  0.99967918   -0 35 52.8
 JU3960
 JU3960!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3960!SPC MD       -   0.99998330  x   1.00005848  =   1.00004177
 JU3960!SPC PA S     -   0.99998330  x   1.00004013  =   1.00002343
 JU3960!UTM  18      -   0.99998330  x   0.99967918  =   0.99966248
 JU3960
 JU3960:                Primary Azimuth Mark                     Grid Az
 JU3960:SPC MD       -  IRWIN AZ MK                              185 52 08.4
 JU3960:SPC PA S     -  IRWIN AZ MK                              185 21 35.6
 JU3960:UTM  18      -  IRWIN AZ MK                              187 08 05.9
 JU3960
 JU3960_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1980097135(NAD 83)
 JU3960
 JU3960|---------------------------------------------------------------------|
 JU3960| PID    Reference Object                     Distance      Geod. Az  |
 JU3960|                                                           dddmmss.s |
 JU3960| JU3959 IRWIN                                44.963 METERS 05722     |
 JU3960| CB2118 IRWIN AZ MK                                        1863213.1 |
 JU3960| CB2122 IRWIN 2 RM 2                         25.342 METERS 24804     |
 JU3960| JU3957 CHROME ATT MICROWAVE RELAY TWR      APPROX. 2.9 KM 2995348.0 |
 JU3960| CB2121 IRWIN 2 RM 1                         14.562 METERS 35201     |
 JU3960|---------------------------------------------------------------------|
 JU3960
 JU3960                          SUPERSEDED SURVEY CONTROL
 JU3960
 JU3960  NAD 83(1986)-  39 43 13.18397(N)    075 56 08.62946(W) AD(       ) 2
 JU3960  NAD 27      -  39 43 12.79303(N)    075 56 09.83392(W) AD(       ) 2
 JU3960  NGVD 29 (07/19/86)  139.8    (m)          459.     (f) VERT ANG       
 JU3960
 JU3960.Superseded values are not recommended for survey control.
 JU3960
 JU3960.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3960.See file dsdata.pdf to determine how the superseded data were derived.
 JU3960
 JU3960_MARKER: DS = TRIANGULATION STATION DISK
 JU3960_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3960_STAMPING: IRWIN 2 1958
 JU3960_MARK LOGO: CGS
 JU3960_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3960+STABILITY: SURFACE MOTION
 JU3960
 JU3960  HISTORY     - Date     Condition        Report By
 JU3960  HISTORY     - 1958     MONUMENTED       CGS
 JU3960  HISTORY     - 1966     GOOD             CGS
 JU3960
 JU3960                          STATION DESCRIPTION
 JU3960
 JU3960'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JU3960'STATION IS LOCATED IN A BARN YARD AT THE WEST END OF A CULTIVATED
 JU3960'FIELD ABOUT 200 METERS SOUTH OF THE MASON-DIXON LINE, ABOUT 4-1/2
 JU3960'MILES SOUTHEAST OF OXFORD, PENNSYLVANIA, ABOUT 3-3/4 MILES
 JU3960'NORTHEAST OF CALVERT, MARYLAND, ABOUT 10 MILES WEST-NORTHWEST
 JU3960'OF NEWARK, DELAWARE AND ABOUT 1-1/2 MILES NORTH OF THE VILLAGE
 JU3960'OF BLUE BALL.  STATION IS 62-1/2 FEET EAST OF APPROXIMATE
 JU3960'CENTERLINE OF DRIVEWAY, 28-1/2 FEET SOUTH OF SOUTHEAST CORNER
 JU3960'OF SHED AND 55 FEET SOUTH-SOUTHWEST OF WEST DOOR OF TURKEY
 JU3960'SHED.  STATION IS A STANDARD DISK SET IN A CONCRETE MONUMENT
 JU3960'ABOUT 1 FOOT BELOW THE SURFACE OF GROUND AND THE DISK IS
 JU3960'STAMPED IRWIN 2 1958.
 JU3960'
 JU3960'REFERENCE MARK NO. 1 IS 42 FEET SOUTH OF APPROXIMATE CENTERLINE
 JU3960'OF DRIVEWAY, 15 FEET SOUTHWEST OF WEST DOOR OF TURKEY SHED AND 1
 JU3960'FOOT EAST-SOUTHEAST OF NORTHEAST CORNER OF TOOL SHED.  THE MARK
 JU3960'IS A STANDARD REFERENCE DISK SET IN A 12X12 INCH CONCRETE
 JU3960'MONUMENT, PROJECTS ABOUT 3 INCHES AND THE DISK IS STAMPED IRWIN
 JU3960'2 NO 1 1958.
 JU3960'
 JU3960'REFERENCE MARK NO. 2 IS 16-1/2 FEET WEST OF APPROXIMATE CENTERLINE
 JU3960'OF DRIVEWAY, 1-1/2 FEET EAST OF CORRAL FENCE AND 5 FEET SOUTH OF
 JU3960'SOUTHEAST CORNER OF DAIRY BARN.  THE MARK IS A STANDARD REFERENCE
 JU3960'DISK SET IN A 12X12 INCH CONCRETE MONUMENT, PROJECTS 4 INCHES
 JU3960'AND THE DISK IS STAMPED IRWIN 2 NO 2 1958.
 JU3960'
 JU3960'AZIMUTH MARK IS 19 FEET WEST OF APPROXIMATE CENTERLINE OF ROAD,
 JU3960'23 FEET SOUTH OF FENCE CORNER, 60-1/2 FEET NORTH OF UTILITY POLE
 JU3960'AND 1 FOOT NORTH OF WITNESS POST.  THE MARK IS A STANDARD AZIMUTH
 JU3960'DISK SET IN A 12X12 INCH CONCRETE MONUMENT, PROJECTS 2 INCHES
 JU3960'AND THE DISK IS STAMPED IRWIN 1935.
 JU3960'
 JU3960'IRWIN 1935 IS IN A LARGE TURKEY SHED, 118 FEET EAST OF WEST END
 JU3960'OF TURKEY SHED, 85-1/2 FEET WEST OF EAST END OF TURKEY SHED AND
 JU3960'7-1/2 FEET SOUTH OF NORTH WALL OF TURKEY SHED.  THE MARK IS A
 JU3960'STANDARD STATION DISK SET IN A CONCRETE MONUMENT ABOUT 1 FOOT
 JU3960'BELOW THE SURFACE OF GROUND AND THE DISK IS STAMPED IRWIN 1935.
 JU3960'
 JU3960'A TRAVERSE CONNECTION WAS MADE TO IRWIN 1935 AND THE DISTANCE
 JU3960'IS SHOWN ABOVE.
 JU3960'
 JU3960'TO REACH FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND STATE
 JU3960'HIGHWAY NO. 272 WHICH IS ABOUT 1.0 MILE NORTH OF NORTH EAST, GO
 JU3960'NORTHERLY ON STATE HIGHWAY NO. 272 FOR 2.7 MILES TO JUNCTION OF
 JU3960'STATE HIGHWAY NO. 274.  TAKE RIGHT FORK AND GO NORTHERLY ON
 JU3960'STATE HIGHWAY NO. 272 FOR 4.8 MILES TO JUNCTION OF STATE HIGHWAY
 JU3960'NO. 273.  TURN RIGHT AND GO EASTERLY ON STATE HIGHWAY NO. 273
 JU3960'FOR 2.65 MILES TO CROSSROADS AT THE VILLAGE OF BLUE BALL.  TURN
 JU3960'LEFT AND GO NORTHERLY ON SURFACED ROAD FOR 0.95 MILE TO FORKS.
 JU3960'TAKE RIGHT FORK AND GO NORTHERLY ON GRAVELED ROAD FOR 0.15
 JU3960'MILE TO AZIMUTH MARK ON LEFT (WEST) SIDE OF ROAD AND IN
 JU3960'FENCELINE.  CONTINUE NORTHERLY ON GRAVELED ROAD FOR
 JU3960'0.3 MILE TO DRIVEWAY ON RIGHT.  TURN RIGHT AND GO EASTERLY ON
 JU3960'DRIVEWAY FOR 0.05 MILE TO EAST END OF DAIRY BARN.  TURN RIGHT
 JU3960'AND GO ABOUT 50 FEET TO SOUTHEAST CORNER OF DAIRY BARN AND
 JU3960'STATION AS DESCRIBED.
 JU3960'
 JU3960'HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
 JU3960
 JU3960                          STATION RECOVERY (1966)
 JU3960
 JU3960'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (ELH)
 JU3960'THE STATION MARK, REFERENCE MARKS NO. 1,2 AND AZIMUTH MARK WERE
 JU3960'RECOVERED AS DESCRIBED.  A DIFFERENT IN DISTANCE AND DIRECTION
 JU3960'WERE NOTED TO THE REFERENCE MARKS AND AZIMUTH MARK.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV5919 ***********************************************************************
 HV5919  DESIGNATION -  ISAAC 1901
 HV5919  PID         -  HV5919
 HV5919  STATE/COUNTY-  MD/DORCHESTER
 HV5919  COUNTRY     -  US
 HV5919  USGS QUAD   -  CHURCH CREEK (2016)
 HV5919
 HV5919                         *CURRENT SURVEY CONTROL
 HV5919  ______________________________________________________________________
 HV5919* NAD 83(1991) POSITION- 38 34 17.59379(N) 076 10 28.83979(W)   ADJUSTED
 HV5919* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV5919  ______________________________________________________________________
 HV5919  GEOID HEIGHT    -        -34.836 (meters)                     GEOID18
 HV5919  LAPLACE CORR    -         -4.45  (seconds)                    DEFLEC18
 HV5919  HORZ ORDER      -  THIRD
 HV5919
 HV5919.The horizontal coordinates were established by classical geodetic methods
 HV5919.and adjusted by the National Geodetic Survey in January 1992.
 HV5919
 HV5919.The orthometric height was scaled from a topographic map.
 HV5919
 HV5919.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV5919.GEOID18 height accuracy estimate available here.
 HV5919
 HV5919.Click photographs - Photos may exist for this station.
 HV5919
 HV5919.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV5919
 HV5919. The following values were computed from the NAD 83(1991) position.
 HV5919
 HV5919;                    North         East     Units Scale Factor Converg.
 HV5919;SPC MD       -   100,771.128   471,920.286   MT  0.99996387   +0 31 04.8
 HV5919;SPC MD       -   330,613.28  1,548,291.80   sFT  0.99996387   +0 31 04.8
 HV5919;UTM  18      - 4,269,887.282   397,670.402   MT  0.99972895   -0 43 56.9
 HV5919
 HV5919!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV5919!SPC MD       -   1.00000535  x   0.99996387  =   0.99996922
 HV5919!UTM  18      -   1.00000535  x   0.99972895  =   0.99973429
 HV5919
 HV5919:                Primary Azimuth Mark                     Grid Az
 HV5919:SPC MD       -  VAN DUYNE 1901                           190 07 28.2
 HV5919:UTM  18      -  VAN DUYNE 1901                           191 22 29.9
 HV5919
 HV5919_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9767069887(NAD 83)
 HV5919
 HV5919|---------------------------------------------------------------------|
 HV5919| PID    Reference Object                     Distance      Geod. Az  |
 HV5919|                                                           dddmmss.s |
 HV5919| HV5929 LOT 1901                            423.716 METERS 0183308.3 |
 HV5919| HV5963 DAN                                 492.915 METERS 0494134.7 |
 HV5919| HV5913 VAN DUYNE 1901                      428.027 METERS 1903833.0 |
 HV5919| HV5937 ABRAHAM                             345.298 METERS 28258     |
 HV5919|---------------------------------------------------------------------|
 HV5919
 HV5919                          SUPERSEDED SURVEY CONTROL
 HV5919
 HV5919  NAD 83(1986)-  38 34 17.59115(N)    076 10 28.85533(W) AD(       ) 3
 HV5919  NAD 27      -  38 34 17.18500(N)    076 10 30.04800(W) AD(       ) 3
 HV5919  USSD        -  38 34 17.59300(N)    076 10 29.88000(W) AD(       ) 3
 HV5919
 HV5919.Superseded values are not recommended for survey control.
 HV5919
 HV5919.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV5919.See file dsdata.pdf to determine how the superseded data were derived.
 HV5919
 HV5919
 HV5919  HISTORY     - Date     Condition        Report By
 HV5919  HISTORY     - 1901     MONUMENTED       CGS
 HV5919  HISTORY     - 1903     GOOD             CGS
 HV5919
 HV5919                          STATION DESCRIPTION
 HV5919
 HV5919'DESCRIBED BY COAST AND GEODETIC SURVEY 1903
 HV5919'ON THE E SIDE OF THE UPPER PART OF LITTLE CHOPTANK RIVER, ON POINT
 HV5919'OPPOSITE ENTRANCE TO CAREY CREEK, 4.25 METERS (13.94 FEET) ESE
 HV5919'FROM MARKED CORNER OF FENCE AND 18.6 METERS (61.0 FEET) SW FROM
 HV5919'TALL MARKED FENCE POST.  CENTER MARKED BY A LOCUST STUB.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2414 ***********************************************************************
 JV2414  DESIGNATION -  ISER
 JV2414  PID         -  JV2414
 JV2414  STATE/COUNTY-  MD/FREDERICK
 JV2414  COUNTRY     -  US
 JV2414  USGS QUAD   -  DAMASCUS (2016)
 JV2414
 JV2414                         *CURRENT SURVEY CONTROL
 JV2414  ______________________________________________________________________
 JV2414* NAD 83(1991) POSITION- 39 22 14.36261(N) 077 13 15.06441(W)   ADJUSTED
 JV2414* NAVD 88 ORTHO HEIGHT -   159.582 (meters)      523.56  (feet) ADJUSTED
 JV2414  ______________________________________________________________________
 JV2414  GEOID HEIGHT    -        -32.071 (meters)                     GEOID18
 JV2414  LAPLACE CORR    -          4.88  (seconds)                    DEFLEC18
 JV2414  DYNAMIC HEIGHT  -        159.498 (meters)      523.29  (feet) COMP
 JV2414  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 JV2414
 JV2414  HORZ ORDER      -  SECOND
 JV2414  VERT ORDER      -  SECOND    CLASS 0
 JV2414
 JV2414.The horizontal coordinates were established by classical geodetic methods
 JV2414.and adjusted by the National Geodetic Survey in January 1992.
 JV2414
 JV2414.The orthometric height was determined by differential leveling and
 JV2414.adjusted by the NATIONAL GEODETIC SURVEY
 JV2414.in June 1991.
 JV2414
 JV2414.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2414.GEOID18 height accuracy estimate available here.
 JV2414
 JV2414.Click photographs - Photos may exist for this station.
 JV2414
 JV2414.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV2414
 JV2414.The dynamic height is computed by dividing the NAVD 88
 JV2414.geopotential number by the normal gravity value computed on the
 JV2414.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2414.degrees latitude (g = 980.6199 gals.).
 JV2414
 JV2414.The modeled gravity was interpolated from observed gravity values.
 JV2414
 JV2414. The following values were computed from the NAD 83(1991) position.
 JV2414
 JV2414;                    North         East     Units Scale Factor Converg.
 JV2414;SPC MD       -   189,177.733   380,968.935   MT  0.99998708   -0 08 19.0
 JV2414;SPC MD       -   620,660.61  1,249,895.58   sFT  0.99998708   -0 08 19.0
 JV2414;UTM  18      - 4,360,262.588   308,690.516   MT  1.00005064   -1 24 33.1
 JV2414
 JV2414!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV2414!SPC MD       -   0.99998000  x   0.99998708  =   0.99996708
 JV2414!UTM  18      -   0.99998000  x   1.00005064  =   1.00003063
 JV2414
 JV2414:                Primary Azimuth Mark                     Grid Az
 JV2414:SPC MD       -  GAVER                                    055 14 47.4
 JV2414:UTM  18      -  GAVER                                    056 31 01.5
 JV2414
 JV2414_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0869060262(NAD 83)
 JV2414
 JV2414|---------------------------------------------------------------------|
 JV2414| PID    Reference Object                     Distance      Geod. Az  |
 JV2414|                                                           dddmmss.s |
 JV2414| JV4213 GAVER                               424.025 METERS 0550628.4 |
 JV2414| JV2416 ISER RM 1                            11.305 METERS 16132     |
 JV2414| JV2415 ISER RM 2                            12.592 METERS 28028     |
 JV2414|---------------------------------------------------------------------|
 JV2414
 JV2414                          SUPERSEDED SURVEY CONTROL
 JV2414
 JV2414  NAD 83(1986)-  39 22 14.36254(N)    077 13 15.07389(W) AD(       ) 2
 JV2414  NAD 27      -  39 22 13.99110(N)    077 13 16.14030(W) AD(       ) 2
 JV2414  NGVD 29             159.78   (m)          524.2    (f) LEVELING    3  
 JV2414  NGVD 29 (11/26/84)  159.788  (m)          524.24   (f) ADJUSTED    2 0
 JV2414
 JV2414.Superseded values are not recommended for survey control.
 JV2414
 JV2414.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2414.See file dsdata.pdf to determine how the superseded data were derived.
 JV2414
 JV2414_MARKER: DS = TRIANGULATION STATION DISK
 JV2414_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2414_STAMPING: ISER 1958
 JV2414_MARK LOGO: CGS
 JV2414_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2414+STABILITY: SURFACE MOTION
 JV2414
 JV2414  HISTORY     - Date     Condition        Report By
 JV2414  HISTORY     - 1958     MONUMENTED       CGS
 JV2414  HISTORY     - 1958     GOOD             CGS
 JV2414
 JV2414                          STATION DESCRIPTION
 JV2414
 JV2414'DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCE)
 JV2414'STATION IS LOCATED IN THE CENTER STRIP BETWEEN THE TWO LANES OF
 JV2414'TRAFFIC OF U.S. HIGHWAY NO. 40, ABOUT 3.5 MILES WEST-SOUTHWEST
 JV2414'OF MOUNT AIRY, AND 2.8 MILES EAST-SOUTHEAST OF NEW MARKET,
 JV2414'AND 27-1/2 FEET NORTHEAST OF CENTERLINE OF WEST BOUND TRAFFIC
 JV2414'LANE, 46 FEET SOUTHWEST OF CENTERLINE OF EAST BOUND TRAFFIC LANE,
 JV2414'27-1/2 FEET EAST-SOUTHEAST OF A SMALL WILLOW TREE.  THE MARK IS
 JV2414'SET FLUSH AND THE DISK IS STAMPED ISER 1958.
 JV2414'
 JV2414'REFERENCE MARK NO. 1 IS 25-1/2 FEET SOUTHWEST OF CENTERLINE OF
 JV2414'EAST BOUND TRAFFIC LANE, 48 FEET NORTHEAST OF CENTERLINE OF WEST
 JV2414'BOUND TRAFFIC LANE.  THE MARK IS SET FLUSH AND THE DISK IS STAMPED
 JV2414'ISER NO 1 1958.
 JV2414'
 JV2414'REFERENCE MARK NO. 2 IS 27-1/2 FEET SOUTHWEST OF CENTERLINE OF
 JV2414'EAST BOUND TRAFFIC LANE, 46-1/2 FEET NORTHEAST OF CENTERLINE OF
 JV2414'WEST BOUND TRAFFIC LANE.  THE MARK IS SET FLUSH AND THE DISK IS
 JV2414'STAMPED ISER NO 2 1958.
 JV2414'
 JV2414'TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY NO. 40 AND
 JV2414'STATE HIGHWAY NO. 75 (AT THE SOUTH EDGE OF THE TOWN OF NEW MARKET),
 JV2414'GO EASTERLY ON U.S. HIGHWAY NO. 40 FOR 2.8 MILES TO STATION ON LEFT
 JV2414'AS DESCRIBED.
 JV2414'
 JV2414'TRAVERSE STATION GAVER IS VISIBLE FROM GROUND.
 JV2414
 JV2414                          STATION RECOVERY (1958)
 JV2414
 JV2414'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958
 JV2414'2.7 MI E FROM NEW MARKET.
 JV2414'ABOUT 2.7 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION
 JV2414'OF STATE HIGHWAY 75 AT NEW MARKET, BETWEEN THE EAST AND WEST
 JV2414'BOUND LANES OF THE HIGHWAY, 27.3 FEET SOUTHWET OF THE CENTER
 JV2414'LINE OF THE WEST BOUND LANE, 46.3 FEET NORTHEAST OF THE CENTER
 JV2414'LINE OF THE EAST BOUND LANE, SET IN THE TOP OF A COCNRETE POST
 JV2414'FLUSH WITH THE GROUND AND ABOUT LEVEL WITH THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2416 ***********************************************************************
 JV2416  DESIGNATION -  ISER RM 1
 JV2416  PID         -  JV2416
 JV2416  STATE/COUNTY-  MD/FREDERICK
 JV2416  COUNTRY     -  US
 JV2416  USGS QUAD   -  DAMASCUS (2016)
 JV2416
 JV2416                         *CURRENT SURVEY CONTROL
 JV2416  ______________________________________________________________________
 JV2416* NAD 83(1986) POSITION- 39 22 14.01   (N) 077 13 14.91   (W)   HD_HELD1
 JV2416* NAVD 88 ORTHO HEIGHT -   159.714 (meters)      524.00  (feet) ADJUSTED
 JV2416  ______________________________________________________________________
 JV2416  GEOID HEIGHT    -        -32.070 (meters)                     GEOID18
 JV2416  DYNAMIC HEIGHT  -        159.630 (meters)      523.72  (feet) COMP
 JV2416  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 JV2416
 JV2416  VERT ORDER      -  SECOND    CLASS 0
 JV2416
 JV2416.The horizontal coordinates were determined by differentially corrected
 JV2416.hand held GPS observations or other comparable positioning techniques
 JV2416.and have an estimated accuracy of +/- 3 meters.
 JV2416
 JV2416.The orthometric height was determined by differential leveling and
 JV2416.adjusted by the NATIONAL GEODETIC SURVEY
 JV2416.in June 1991.
 JV2416
 JV2416.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2416.GEOID18 height accuracy estimate available here.
 JV2416
 JV2416.Click photographs - Photos may exist for this station.
 JV2416
 JV2416.The dynamic height is computed by dividing the NAVD 88
 JV2416.geopotential number by the normal gravity value computed on the
 JV2416.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2416.degrees latitude (g = 980.6199 gals.).
 JV2416
 JV2416.The modeled gravity was interpolated from observed gravity values.
 JV2416
 JV2416;                    North         East    Units  Estimated Accuracy
 JV2416;SPC MD       -   189,166.9     380,972.6     MT  (+/- 3 meters HH1 GPS) 
 JV2416
 JV2416_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0869360251(NAD 83)
 JV2416
 JV2416                          SUPERSEDED SURVEY CONTROL
 JV2416
 JV2416  NGVD 29 (11/26/84)  159.920  (m)          524.67   (f) ADJUSTED    2 0
 JV2416
 JV2416.Superseded values are not recommended for survey control.
 JV2416
 JV2416.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2416.See file dsdata.pdf to determine how the superseded data were derived.
 JV2416
 JV2416_MARKER: DR = REFERENCE MARK DISK
 JV2416_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2416_STAMPING: ISER NO 1 1958
 JV2416_MARK LOGO: CGS
 JV2416_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2416+STABILITY: SURFACE MOTION
 JV2416
 JV2416  HISTORY     - Date     Condition        Report By
 JV2416  HISTORY     - 1958     MONUMENTED       CGS
 JV2416
 JV2416                          STATION DESCRIPTION
 JV2416
 JV2416'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2416'2.7 MI E FROM NEW MARKET.
 JV2416'ABOUT 2.7 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION
 JV2416'OF STATE HIGHWAY 75 AT NEW MARKET, BETWEEN THE HIGHWAY LANES,
 JV2416'37.1 FEET SOUTH OF THE STATION, 25 FEET NORTHEAST OF THE CENTER
 JV2416'LINE OF THE EAST BOUND LANE, SET IN THE TOP OF A CONCRETE POST
 JV2416'PROJECTING 1 INCH.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2415 ***********************************************************************
 JV2415  DESIGNATION -  ISER RM 2
 JV2415  PID         -  JV2415
 JV2415  STATE/COUNTY-  MD/FREDERICK
 JV2415  COUNTRY     -  US
 JV2415  USGS QUAD   -  DAMASCUS (2016)
 JV2415
 JV2415                         *CURRENT SURVEY CONTROL
 JV2415  ______________________________________________________________________
 JV2415* NAD 83(1986) POSITION- 39 22 14.44   (N) 077 13 15.58   (W)   HD_HELD1
 JV2415* NAVD 88 ORTHO HEIGHT -   159.785 (meters)      524.23  (feet) ADJUSTED
 JV2415  ______________________________________________________________________
 JV2415  GEOID HEIGHT    -        -32.071 (meters)                     GEOID18
 JV2415  DYNAMIC HEIGHT  -        159.701 (meters)      523.95  (feet) COMP
 JV2415  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 JV2415
 JV2415  VERT ORDER      -  SECOND    CLASS 0
 JV2415
 JV2415.The horizontal coordinates were determined by differentially corrected
 JV2415.hand held GPS observations or other comparable positioning techniques
 JV2415.and have an estimated accuracy of +/- 3 meters.
 JV2415
 JV2415.The orthometric height was determined by differential leveling and
 JV2415.adjusted by the NATIONAL GEODETIC SURVEY
 JV2415.in June 1991.
 JV2415
 JV2415.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2415.GEOID18 height accuracy estimate available here.
 JV2415
 JV2415.Click photographs - Photos may exist for this station.
 JV2415
 JV2415.The dynamic height is computed by dividing the NAVD 88
 JV2415.geopotential number by the normal gravity value computed on the
 JV2415.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2415.degrees latitude (g = 980.6199 gals.).
 JV2415
 JV2415.The modeled gravity was interpolated from observed gravity values.
 JV2415
 JV2415;                    North         East    Units  Estimated Accuracy
 JV2415;SPC MD       -   189,180.1     380,956.6     MT  (+/- 3 meters HH1 GPS) 
 JV2415
 JV2415_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ0867860265(NAD 83)
 JV2415
 JV2415                          SUPERSEDED SURVEY CONTROL
 JV2415
 JV2415  NGVD 29 (11/26/84)  159.991  (m)          524.90   (f) ADJUSTED    2 0
 JV2415
 JV2415.Superseded values are not recommended for survey control.
 JV2415
 JV2415.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2415.See file dsdata.pdf to determine how the superseded data were derived.
 JV2415
 JV2415_MARKER: DR = REFERENCE MARK DISK
 JV2415_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV2415_STAMPING: ISER NO 2 1958
 JV2415_MARK LOGO: CGS
 JV2415_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV2415+STABILITY: SURFACE MOTION
 JV2415
 JV2415  HISTORY     - Date     Condition        Report By
 JV2415  HISTORY     - 1958     MONUMENTED       CGS
 JV2415
 JV2415                          STATION DESCRIPTION
 JV2415
 JV2415'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2415'2.7 MI E FROM NEW MARKET.
 JV2415'ABOUT 2.7 MILES EAST ALONG U.S. HIGHWAY 40 FROM THE INTERSECTION
 JV2415'OF STATE HIGHWAY 75 AT NEW MARKET, BETWEEN THE HIGHWAY LANES, 41.3
 JV2415'FEET WEST OF THE STATION, 26 FEET NORTHEAST OF THE CENTER LINE
 JV2415'OF THE EAST BOUND LANE, SET IN THE TOP OF A CONCRETE POST FLUSH
 JV2415'WITH THE GROUND AND ABOUT LEVEL WITH THE HIGHWAY.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV6775 ***********************************************************************
 HV6775  DESIGNATION -  ISLAND
 HV6775  PID         -  HV6775
 HV6775  STATE/COUNTY-  MD/CALVERT
 HV6775  COUNTRY     -  US
 HV6775  USGS QUAD   -  BROOMES ISLAND (2016)
 HV6775
 HV6775                         *CURRENT SURVEY CONTROL
 HV6775  ______________________________________________________________________
 HV6775* NAD 83(1993) POSITION- 38 24 25.16273(N) 076 32 12.63739(W)   ADJUSTED
 HV6775* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HV6775  ______________________________________________________________________
 HV6775  GEOID HEIGHT    -        -34.125 (meters)                     GEOID18
 HV6775  LAPLACE CORR    -         -4.87  (seconds)                    DEFLEC18
 HV6775  HORZ ORDER      -  SECOND
 HV6775
 HV6775.The horizontal coordinates were established by classical geodetic methods
 HV6775.and adjusted by the National Geodetic Survey in November 1994.
 HV6775
 HV6775.The orthometric height was scaled from a topographic map.
 HV6775
 HV6775.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV6775.GEOID18 height accuracy estimate available here.
 HV6775
 HV6775.Click photographs - Photos may exist for this station.
 HV6775
 HV6775.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV6775
 HV6775. The following values were computed from the NAD 83(1993) position.
 HV6775
 HV6775;                    North         East     Units Scale Factor Converg.
 HV6775;SPC MD       -    82,281.563   440,453.449   MT  0.99998311   +0 17 26.5
 HV6775;SPC MD       -   269,952.09  1,445,054.36   sFT  0.99998311   +0 17 26.5
 HV6775;UTM  18      - 4,252,091.092   365,814.634   MT  0.99982174   -0 57 17.6
 HV6775
 HV6775!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV6775!SPC MD       -   1.00000540  x   0.99998311  =   0.99998851
 HV6775!UTM  18      -   1.00000540  x   0.99982174  =   0.99982714
 HV6775
 HV6775:                Primary Azimuth Mark                     Grid Az
 HV6775:SPC MD       -  WHEAT                                    126 27 41.9
 HV6775:UTM  18      -  WHEAT                                    127 42 26.0
 HV6775
 HV6775_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6581452091(NAD 83)
 HV6775
 HV6775|---------------------------------------------------------------------|
 HV6775| PID    Reference Object                     Distance      Geod. Az  |
 HV6775|                                                           dddmmss.s |
 HV6775| CX2931 ISLAND RM                            30.930 METERS 00240     |
 HV6775| HV6771 PEAK                                APPROX. 1.4 KM 0822554.0 |
 HV6775| HV6762 WHEAT                               APPROX. 3.0 KM 1264508.4 |
 HV6775|---------------------------------------------------------------------|
 HV6775
 HV6775                          SUPERSEDED SURVEY CONTROL
 HV6775
 HV6775  NAD 83(1991)-  38 24 25.16292(N)    076 32 12.63785(W) AD(       ) 2
 HV6775  NAD 83(1986)-  38 24 25.16254(N)    076 32 12.65194(W) AD(       ) 2
 HV6775  NAD 27      -  38 24 24.71500(N)    076 32 13.81200(W) AD(       ) 2
 HV6775  USSD        -  38 24 25.07500(N)    076 32 13.55900(W) AD(       ) 3
 HV6775
 HV6775.Superseded values are not recommended for survey control.
 HV6775
 HV6775.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV6775.See file dsdata.pdf to determine how the superseded data were derived.
 HV6775
 HV6775_MARKER: N = NAIL
 HV6775_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 HV6775_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 HV6775
 HV6775  HISTORY     - Date     Condition        Report By
 HV6775  HISTORY     - 1908     MONUMENTED       MDSFC
 HV6775  HISTORY     - 1942     SEE DESCRIPTION  CGS
 HV6775  HISTORY     - 1943     MARK NOT FOUND   CGS
 HV6775  HISTORY     - 1960     GOOD             CGS
 HV6775  HISTORY     - 1974     MARK NOT FOUND   MDDNR
 HV6775
 HV6775                          STATION DESCRIPTION
 HV6775
 HV6775'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1908 (CCY)
 HV6775'ON THE NE SHORE OF PATUXENT RIVER, ON EXTREME SE POINT OF LAND
 HV6775'ABOUT 1/2 MILE TO THE E OF MOUTH OF ISLAND CREEK, ON A MARSHY
 HV6775'POINT AT ABOUT EXTREME HIGH-WATER MARK, 30 YARDS N OF EXTREME END
 HV6775'OF POINT, 25 YARDS E OF ONE SIDE OF POINT, AND 20 YARDS W OF
 HV6775'ANOTHER SIDE OF POINT.
 HV6775'
 HV6775'STATION MARK IS NAIL IN STUB, WITH TOP FLUSH WITH SURFACE OF GROUND.
 HV6775'
 HV6775'ONE REFERENCE MARK IS CENTER OF 4-INCH PIPE SET IN CEMENT WITH TOP
 HV6775'PROJECTING 10 INCHES ABOVE GROUND.  THIS IS THE CENTER MARK FOR
 HV6775'STATION POINT OF 1907 SURVEY.  IT IS 16.98 METERS (55.7 FEET) FROM
 HV6775'STATION N 12 DEG 39 MIN E.  ANOTHER REFERENCE MARK IS CENTER OF
 HV6775'STANDARD CEMENT MONUMENT OF MARYLAND SHELL FISH SURVEY.  IT IS
 HV6775'30.93 METERS (101.5 FEET) FROM STATION N 2 DEG DEG 40 MIN E.
 HV6775'
 HV6775'DISTANCES AND BEARINGS FROM THE STATION OF OTHER POINTS OF
 HV6775'REFERENCE ARE AS FOLLOWS--
 HV6775'
 HV6775'PINNACLE OF LARGE HOUSE IN TREES, 2 MILES, S 7 DEG 34 MIN W.  LEFT
 HV6775'CHIMNEY OF LARGE HOUSE BACK ON HILL, 2 MILES, S 14 DEG 39 MIN W.
 HV6775'CHIMNEY ON MIDDLE OF LARGE 2 1/2-STORY HOUSE, 1-1/2 MILES, S 56
 HV6775'DEG 44 MIN W.  MIDDLE OF RAILING ON TOP OF ROOF OF 2 1/2-STORY
 HV6775'HOUSE, 3 MILES, S 66 DEG 45 MIN W.  CHIMNEY OF BROOME HOUSE, 3/4
 HV6775'MILE, N 89 DEG 34 MIN W.  WEATHER VANE ON BROOME HOUSE, 3/4 MILE,
 HV6775'N 84 DEG 42 MIN W.  RIGHT CHIMNEY OF HOUSE, 3 MILES, N 54 DEG 54
 HV6775'MIN W.  RIGHT CHIMNEY OF HOUSE, 2 MILES, N 39 DEG 48 MIN W.  SMOKE
 HV6775'PIPE OF WATCH HOUSE, 1 MILE, S 79 DEG 46 MIN E.  TOWER OF PETERSON
 HV6775'HOUSE, 2 MILES, S 57 DEG 7 MIN E.  LEFT END OF PEAK OF ROOF OF
 HV6775'SOTTERLY WHARF HOUSE, 2 MILES, S 7 DEG 8 MIN E.
 HV6775
 HV6775                          STATION RECOVERY (1942)
 HV6775
 HV6775'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL)
 HV6775'STATION IS LOCATED ABOUT 0.5 MILE E OF ISLAND CREEK AND THE
 HV6775'VILLAGE OF BROOMES ISLAND ON A POINT OF LAND KNOWN LOCALLY AS
 HV6775'SURVEY POINT.  IT IS 41 FEET NNE OF A DUCK BLIND WHICH IS ON THE
 HV6775'EXTREME TIP OF THE POINT.
 HV6775'
 HV6775'STATION MARK IS A 4-INCH TERRA COTTA PIPE FILLED WITH CONCRETE
 HV6775'PROJECTING 4 INCHES, THE CENTER OF WHICH IS A NAIL HOLE.  THIS
 HV6775'STATION WAS ORIGINALLY ESTABLISHED BY THE MARYLAND SHELL FISH
 HV6775'COMMISSION AND U.S.C.S.
 HV6775'
 HV6775'REFERENCE MARK NO.1, A STANDARD BRONZE DISK SET IN CONCRETE AT THE
 HV6775'TOP OF A TILE, IS NE OF THE STATION.  IT IS STAMPED ISLAND NO.1
 HV6775'1942 AND PROJECTS 6 INCHES.
 HV6775'
 HV6775'REFERENCE MARK NO.2, ANOTHER OLD REFERENCE MARK FOR ISLAND, IS
 HV6775'NNW OF THE STATION.  IT IS MARKED BY A HOLE IN THE CENTER OF THE
 HV6775'TOP OF A MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH
 HV6775'SQUARE CONCRETE POST PROJECTING 4 INCHES.  THE LETTERS M.S.F.C.
 HV6775'AND U.S.C.S. ARE COUNTERSUNK IN TOP OF POST.
 HV6775'
 HV6775'NO AZIMUTH MARK WAS SET.  STATIONS COLE, HUTCHINS, AND POINT FARM
 HV6775'ARE VISIBLE FROM THE GROUND.
 HV6775'
 HV6775'TO REACH THE STATION FROM PRINCE FREDERICK GO SOUTHWARD ON STATE
 HV6775'HIGHWAY 2 FOR 3.75 MILES TO A T-ROAD RIGHT.  TURN RIGHT AND GO 2.2
 HV6775'MILES TO THE MUTUAL POST OFFICE, HERE BEAR RIGHT (STRAIGHT AHEAD)
 HV6775'AND GO 4.65 MILES TO THE WHARF AT BROOMES ISLAND.  FROM HERE TAKE
 HV6775'A BOAT AND GO EASTWARD AROUND POINT ABOUT 1/2 MILE TO STATION.
 HV6775'
 HV6775'TO REACH THE STATION BY LAND FROM THE MUTUAL POST OFFICE TAKE THE
 HV6775'LEFT FORK AND GO 3.25 MILES TO GRAVEL ROAD RIGHT, TURN RIGHT AND
 HV6775'GO 1.4 MILES TO END OF GRAVEL ROAD AT HOUSE ON LEFT AND BARN ON
 HV6775'RIGHT, TURN RIGHT AND FOLLOW ONLY ROAD ABOUT 0.6 MILE TO BARN,
 HV6775'THEN TURN LEFT AND GO 0.45 MILE TO END OF TRUCK TRAVEL.  FROM HERE
 HV6775'PROCEED ON FOOT ABOUT 1/2 MILE SE TO STATION ACROSS MARSH.
 HV6775'
 HV6775'A 4-FOOT STAND AT STATION ISLAND WILL SEE 4-FOOT LIGHTS AT
 HV6775'STATIONS COLE, HUTCHINS, AND POINT FARM.
 HV6775
 HV6775                          STATION RECOVERY (1943)
 HV6775
 HV6775'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1943 (RLS)
 HV6775'THIS VICINITY WAS THOROUGHLY SEARCHED AND ALL THAT COULD BE FOUND
 HV6775'WAS STATION ISLAND REFERENCE MARK WITH ITS TWO REFERENCE MARKS.
 HV6775'SINCE THIS REFERENCE MARK AND ONE OF ITS REFERENCE MARKS WERE
 HV6775'ORIGINALLY REFERENCE MARKS FOR THIS STATION, IT IS RECOMMENDED
 HV6775'THAT THIS STATION (ISLAND) BE CLASSIFIED AS LOST IN FAVOR OF
 HV6775'STATION ISLAND REFERENCE MARK 1908 WHICH HAS BEEN RECOVERED WITH
 HV6775'ITS TWO REFERENCE MARKS.
 HV6775'
 HV6775'EDITORS NOTE--1908 DESCRIPTION APPEARS TO LIST TWO REFERENCE
 HV6775'MARKS IN ALL.
 HV6775
 HV6775                          STATION RECOVERY (1960)
 HV6775
 HV6775'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (LFB)
 HV6775'STATION MARK AND REFERENCE MARKS RECOVERED IN GOOD CONDITION.  THE
 HV6775'DISTANCES TO THE REFERENCE MARKS WERE VERIFIED.  THE PUBLISHED
 HV6775'DESCRIPTION IS ADEQUATE WITH THE FOLLOWING ADDITION--A WOODEN
 HV6775'TRIPOD WAS FOUND BUILT OVER REFERENCE MARK NO.2 AND WILL AID IN
 HV6775'RECOVERY OF THE STATION.
 HV6775
 HV6775                          STATION RECOVERY (1974)
 HV6775
 HV6775'RECOVERY NOTE BY MD DEPT OF NAT RES 1974 (GEH)
 HV6775'STA. NOT STAMPED NOT RECOVD.
 HV6775'
 HV6775'ISLAND NO.1 1942 NOT RECOVD.
 HV6775'
 HV6775'MSFC - USCS FAIR
 HV6775'
 HV6775'STA AND RM 1 NOT RECOVD.  MEAS. FROM RM 2 PLACE STA AND RM 1 IN
 HV6775'WATER.  MSFC MON. BADLY CRACKED ON TOP, FLUSH WITH SURFACE OF
 HV6775'MARSH.  MON. 53 FT N OF END OF PT 25 FT W OF SHORELINE AND 27 FT
 HV6775'E OF SHORELINE
 HV6775'
 HV6775'DISTANCE AND DIRECTION FROM NEAREST TOWN--1/2 MILE EAST OF BROOME
 HV6775'ISLAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7157 ***********************************************************************
 HV7157  DESIGNATION -  ISLAND
 HV7157  PID         -  HV7157
 HV7157  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7157  COUNTRY     -  US
 HV7157  USGS QUAD   -  SOUTH RIVER (2016)
 HV7157
 HV7157                         *CURRENT SURVEY CONTROL
 HV7157  ______________________________________________________________________
 HV7157* NAD 83(1991) POSITION- 38 53 03.03732(N) 076 32 10.54030(W)   ADJUSTED
 HV7157* NAVD 88 ORTHO HEIGHT -     6.    (meters)       20.    (feet) SCALED
 HV7157  ______________________________________________________________________
 HV7157  GEOID HEIGHT    -        -33.401 (meters)                     GEOID18
 HV7157  LAPLACE CORR    -         -4.17  (seconds)                    DEFLEC18
 HV7157  HORZ ORDER      -  THIRD
 HV7157
 HV7157.The horizontal coordinates were established by classical geodetic methods
 HV7157.and adjusted by the National Geodetic Survey in January 1992.
 HV7157
 HV7157.The orthometric height was scaled from a topographic map.
 HV7157
 HV7157.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7157.GEOID18 height accuracy estimate available here.
 HV7157
 HV7157.Click photographs - Photos may exist for this station.
 HV7157
 HV7157.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7157
 HV7157. The following values were computed from the NAD 83(1991) position.
 HV7157
 HV7157;                    North         East     Units Scale Factor Converg.
 HV7157;SPC MD       -   135,251.024   440,235.246   MT  0.99994986   +0 17 27.8
 HV7157;SPC MD       -   443,736.07  1,444,338.47   sFT  0.99994986   +0 17 27.8
 HV7157;UTM  18      - 4,305,045.253   366,752.422   MT  0.99981863   -0 57 52.3
 HV7157
 HV7157!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7157!SPC MD       -   1.00000434  x   0.99994986  =   0.99995420
 HV7157!UTM  18      -   1.00000434  x   0.99981863  =   0.99982297
 HV7157
 HV7157:                Primary Azimuth Mark                     Grid Az
 HV7157:SPC MD       -  LETTS                                    004 43 54.3
 HV7157:UTM  18      -  LETTS                                    005 59 14.4
 HV7157
 HV7157_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6675205045(NAD 83)
 HV7157
 HV7157|---------------------------------------------------------------------|
 HV7157| PID    Reference Object                     Distance      Geod. Az  |
 HV7157|                                                           dddmmss.s |
 HV7157| HV7174 LETTS                               APPROX. 1.7 KM 0050122.1 |
 HV7157| CX2930 ISLAND RM 1                          13.335 METERS 29107     |
 HV7157|---------------------------------------------------------------------|
 HV7157
 HV7157                          SUPERSEDED SURVEY CONTROL
 HV7157
 HV7157  NAD 83(1986)-  38 53 03.03369(N)    076 32 10.55177(W) AD(       ) 3
 HV7157  NAD 27      -  38 53 02.62800(N)    076 32 11.69200(W) AD(       ) 3
 HV7157
 HV7157.Superseded values are not recommended for survey control.
 HV7157
 HV7157.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7157.See file dsdata.pdf to determine how the superseded data were derived.
 HV7157
 HV7157_MARKER: DS = TRIANGULATION STATION DISK
 HV7157_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7157_STAMPING: ISLAND 1933
 HV7157_MARK LOGO: CGS
 HV7157_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7157+STABILITY: SURFACE MOTION
 HV7157
 HV7157  HISTORY     - Date     Condition        Report By
 HV7157  HISTORY     - 1933     MONUMENTED       CGS
 HV7157  HISTORY     - 1960     GOOD             CGS
 HV7157  HISTORY     - 1973     GOOD             MDDNR
 HV7157  HISTORY     - 1984     GOOD             MDDNR
 HV7157
 HV7157                          STATION DESCRIPTION
 HV7157
 HV7157'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7157'STATION IS ON BIG ISLAND, ABOUT 1-3/4 MILES ABOVE THE MOUTH OF
 HV7157'RHODE RIVER.  THE ISLAND IS OWNED BY THE MURRAY ESTATE.  THE
 HV7157'STATION IS ON THE MOST EASTERLY POINT OF THE ISLAND AND NEARER TO
 HV7157'THE NORTHERN END.  IT IS ON A 25-FOOT BLUFF, 30 FEET FROM THE
 HV7157'EDGE OF THE BANK AND IN THE WOODS.
 HV7157'
 HV7157'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7157'CONCRETE AS DESCRIBED.
 HV7157
 HV7157                          STATION RECOVERY (1960)
 HV7157
 HV7157'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7157'STATION AND REFERENCE MARK RECOVERED IN GOOD CONDITION.  STATION
 HV7157'MARK IS STAMPED ISLAND 1933.  REFERENCE MARK 1 IS STAMPED ISLAND
 HV7157'NO 1 1933.  THE DISTANCE WAS CHECKED AND FOUND TO BE CORRECT.  THE
 HV7157'ORIGINAL DESCRIPTION BY J.A.B. IN 1933 IS COMPLETE AND ADEQUATE
 HV7157'WITH THE FOLLOWING EXCEPTION.  THE STATION IS NOW 15 FT FROM EDGE
 HV7157'OF BLUFF INSTEAD OF 30 FT.
 HV7157
 HV7157                          STATION RECOVERY (1973)
 HV7157
 HV7157'RECOVERY NOTE BY MD DEPT OF NAT RES 1973 (GEH)
 HV7157'ISLAND 1933 GOOD.
 HV7157'
 HV7157'RECOVERED AS DESCRIBED.  RM NOT SEARCHED FOR.
 HV7157
 HV7157                          STATION RECOVERY (1984)
 HV7157
 HV7157'RECOVERY NOTE BY MD DEPT OF NAT RES 1984 (LW)
 HV7157'ISLAND 1933 RECOVERED GOOD.  STATION PROJECTS 2 INCHES AND IS 16
 HV7157'FEET NE OF A 15 INCH LEANING TREE, 18.3 FEET OF A 12 INCH TREE,
 HV7157'13.25 FEET SE OF A 6 INCH GUM TREE, AND 20 FEET SSW OF A 30 INCH
 HV7157'HIGH BANK.  THE TREES FORM A LINE RUNNING FROM SW TO NE TO THE
 HV7157'NW OF THE STATION.  STATION IS ON BIG ISLAND ON PROPERTY OF
 HV7157'THE SMITHSONIAN INSTITUTION AC 301 798 4424.  DR. DAVID
 HV7157'CORELLE IS THE ADMINISTRATOR, AND PERMISSION SHOULD BE OBTAINED
 HV7157'BEFORE VISITING.
 HV7157'
 HV7157'ISLAND NO. 1 1933 RECOVERED GOOD, 5.5 FEET W OF 4 INCH GUM,
 HV7157'15.2 FEET SW OF 12 INCH TREE, 26.75 FEET E OF FORKED 12 INCH
 HV7157'TREE 51 FEET SSW OF EDGE OF 30 FEET HIGH BANK AND FLUSH WITH THE
 HV7157'GROUND.  HEAVY GROWTH OBSTRUCTS THE LINE BETWEEN NO. 1 AND
 HV7157'THE STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5086 ***********************************************************************
 JV5086  DESIGNATION -  ISLAND
 JV5086  PID         -  JV5086
 JV5086  STATE/COUNTY-  MD/KENT
 JV5086  COUNTRY     -  US
 JV5086  USGS QUAD   -  LANGFORD CREEK (2016)
 JV5086
 JV5086                         *CURRENT SURVEY CONTROL
 JV5086  ______________________________________________________________________
 JV5086* NAD 83(1991) POSITION- 39 05 46.22548(N) 076 12 06.85483(W)   ADJUSTED
 JV5086* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JV5086  ______________________________________________________________________
 JV5086  GEOID HEIGHT    -        -33.475 (meters)                     GEOID18
 JV5086  LAPLACE CORR    -         -2.04  (seconds)                    DEFLEC18
 JV5086  HORZ ORDER      -  THIRD
 JV5086
 JV5086.The horizontal coordinates were established by classical geodetic methods
 JV5086.and adjusted by the National Geodetic Survey in January 1992.
 JV5086
 JV5086.The orthometric height was scaled from a topographic map.
 JV5086
 JV5086.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5086.GEOID18 height accuracy estimate available here.
 JV5086
 JV5086.Click photographs - Photos may exist for this station.
 JV5086
 JV5086.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5086
 JV5086. The following values were computed from the NAD 83(1991) position.
 JV5086
 JV5086;                    North         East     Units Scale Factor Converg.
 JV5086;SPC MD       -   158,984.374   469,038.652   MT  0.99995722   +0 30 03.3
 JV5086;SPC MD       -   521,601.23  1,538,837.64   sFT  0.99995722   +0 30 03.3
 JV5086;UTM  18      - 4,328,136.698   396,064.476   MT  0.99973301   -0 45 28.9
 JV5086
 JV5086!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5086!SPC MD       -   1.00000529  x   0.99995722  =   0.99996251
 JV5086!UTM  18      -   1.00000529  x   0.99973301  =   0.99973830
 JV5086
 JV5086:                Primary Azimuth Mark                     Grid Az
 JV5086:SPC MD       -  TRAY                                     143 08 18.8
 JV5086:UTM  18      -  TRAY                                     144 23 51.0
 JV5086
 JV5086_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9606428136(NAD 83)
 JV5086
 JV5086|---------------------------------------------------------------------|
 JV5086| PID    Reference Object                     Distance      Geod. Az  |
 JV5086|                                                           dddmmss.s |
 JV5086| CA9557 ISLAND RM                             9.010 METERS 04339     |
 JV5086| JV5081 TRAY                                APPROX. 0.6 KM 1433822.1 |
 JV5086|---------------------------------------------------------------------|
 JV5086
 JV5086                          SUPERSEDED SURVEY CONTROL
 JV5086
 JV5086  NAD 83(1986)-  39 05 46.22010(N)    076 12 06.86653(W) AD(       ) 3
 JV5086  NAD 27      -  39 05 45.81800(N)    076 12 08.02300(W) AD(       ) 3
 JV5086  USSD        -  39 05 46.21000(N)    076 12 07.86500(W) AD(       ) 3
 JV5086
 JV5086.Superseded values are not recommended for survey control.
 JV5086
 JV5086.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5086.See file dsdata.pdf to determine how the superseded data were derived.
 JV5086
 JV5086_MARKER: Z = SEE DESCRIPTION
 JV5086_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 JV5086_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 JV5086
 JV5086  HISTORY     - Date     Condition        Report By
 JV5086  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5086  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5086
 JV5086                          STATION DESCRIPTION
 JV5086
 JV5086'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5086'STATION IS ON THE EASTERN SHORE OF GRAYS INN CREEK, ABOUT 5/8 MILE
 JV5086'NW OF CHESTER RIVER, ON ISLAND POINT, OPPOSITE HARRIS WHARF, ON
 JV5086'MARSHLAND, ABOUT 1 FOOT ABOVE HIGH WATER, 3 YARDS NE OF SHORE, AND
 JV5086'400 YARDS W OF A HOUSE.
 JV5086'
 JV5086'STATION MARK IS CENTER OF 2-INCH TILE PIPE WITH TOP FLUSH WITH
 JV5086'SURFACE OF GROUND.  SUBSURFACE MARK IS CENTER OF 2-INCH TILE PIPE,
 JV5086'BURIED WITH THE TOP 2 INCHES BELOW THE SURFACE MARK.
 JV5086'
 JV5086'REFERENCE MARK IS A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5086'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST
 JV5086'2 FEET LONG, WITH TOP PROJECTING ABOUT 6 INCHES.  THE LETTERS
 JV5086'M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT IS 9.01
 JV5086'METERS (29.56) FEET FROM STATION 43 DEG 38 MIN E.
 JV5086'
 JV5086'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5086'FOLLOWS--LONE POPLAR TREE, 5/8 MILE, S 28 DEG 41 MIN W.  E GABLE OF
 JV5086'HARRIS HOUSE, 1/2 MILE, S 32 DEG 05 MIN W.E GABLE OF HARRIS BARN, S 37
 JV5086'DEG 10 MIN W.  RIGHT TANGENT OF PILES OF OLD WHARF, 3/8 MILE, S 57 DEG
 JV5086'07 MINW .  CHIMNEY OF SMALL HOUSE, 1-1/4 MILES, N 62 DEG 59 MIN W. E
 JV5086'CHIMNEY OF HOUSE, 3/4 MILE, N 45 DEG 15 MIN W. E GABLE OF STRONGS
 JV5086'TENANT HOUSE, 1/4 MILE, N 18 DEG 51 MIN W. CHIMNEY OF STRONGS OLD
 JV5086'DISTILLERY, 1/4 MILE, S 87 DEG 49 MIN E. LONE CEDAR TREE NEAR
 JV5086'SHORE, 300 YARDS, S 41 DEG 23 MIN E.
 JV5086
 JV5086                          STATION RECOVERY (1941)
 JV5086
 JV5086'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5086'MARSH HAS WASHED 20 FEET IN LAST 10 YEARS ACCORDING TO
 JV5086'CARETAKER.  HAS NEVER SEEN STATION OR REFERENCE MARK.  RECOMMEND
 JV5086'THAT STATION BE CONSIDERED LOST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5776 ***********************************************************************
 JV5776  DESIGNATION -  ISLAND
 JV5776  PID         -  JV5776
 JV5776  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV5776  COUNTRY     -  US
 JV5776  USGS QUAD   -  ROUND BAY (2016)
 JV5776
 JV5776                         *CURRENT SURVEY CONTROL
 JV5776  ______________________________________________________________________
 JV5776* NAD 83(1991) POSITION- 39 02 24.36421(N) 076 33 47.33497(W)   ADJUSTED
 JV5776* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 JV5776  ______________________________________________________________________
 JV5776  GEOID HEIGHT    -        -33.093 (meters)                     GEOID18
 JV5776  LAPLACE CORR    -         -5.03  (seconds)                    DEFLEC18
 JV5776  HORZ ORDER      -  THIRD
 JV5776
 JV5776.The horizontal coordinates were established by classical geodetic methods
 JV5776.and adjusted by the National Geodetic Survey in January 1992.
 JV5776
 JV5776.The orthometric height was scaled from a topographic map.
 JV5776
 JV5776.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5776.GEOID18 height accuracy estimate available here.
 JV5776
 JV5776.Click photographs - Photos may exist for this station.
 JV5776
 JV5776.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5776
 JV5776. The following values were computed from the NAD 83(1991) position.
 JV5776
 JV5776;                    North         East     Units Scale Factor Converg.
 JV5776;SPC MD       -   152,548.356   437,819.609   MT  0.99995395   +0 16 27.1
 JV5776;SPC MD       -   500,485.73  1,436,413.17   sFT  0.99995395   +0 16 27.1
 JV5776;UTM  18      - 4,322,389.180   364,717.153   MT  0.99982535   -0 59 05.0
 JV5776
 JV5776!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5776!SPC MD       -   1.00000476  x   0.99995395  =   0.99995871
 JV5776!UTM  18      -   1.00000476  x   0.99982535  =   0.99983011
 JV5776
 JV5776:                Primary Azimuth Mark                     Grid Az
 JV5776:SPC MD       -  SWAN                                     064 08 52.1
 JV5776:UTM  18      -  SWAN                                     065 24 24.2
 JV5776
 JV5776_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6471722389(NAD 83)
 JV5776
 JV5776|---------------------------------------------------------------------|
 JV5776| PID    Reference Object                     Distance      Geod. Az  |
 JV5776|                                                           dddmmss.s |
 JV5776| JV5768 SWAN                                APPROX. 2.4 KM 0642519.2 |
 JV5776| CA9556 ISLAND RM                             7.740 METERS 32529     |
 JV5776|---------------------------------------------------------------------|
 JV5776
 JV5776                          SUPERSEDED SURVEY CONTROL
 JV5776
 JV5776  NAD 83(1986)-  39 02 24.36113(N)    076 33 47.34577(W) AD(       ) 3
 JV5776  NAD 27      -  39 02 23.96700(N)    076 33 48.47700(W) AD(       ) 3
 JV5776  USSD        -  39 02 24.30100(N)    076 33 48.32900(W) AD(       ) 3
 JV5776
 JV5776.Superseded values are not recommended for survey control.
 JV5776
 JV5776.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5776.See file dsdata.pdf to determine how the superseded data were derived.
 JV5776
 JV5776
 JV5776  HISTORY     - Date     Condition        Report By
 JV5776  HISTORY     - 1903     MONUMENTED       CGS
 JV5776  HISTORY     - 1906     GOOD             CGS
 JV5776
 JV5776                          STATION DESCRIPTION
 JV5776
 JV5776'DESCRIBED BY COAST AND GEODETIC SURVEY 1906
 JV5776'ON LITTLE ROUND BAY IN SEVERN RIVER, ON SE POINT OF ST. HELENA
 JV5776'ISLAND, ON A LOW MARSH POINT ABOUT 2 FEET ABOVE AND 15 FEET
 JV5776'BACK FROM HIGH-WATER MARK, AND 25 FEET S OF FOOT OF ROUND HILL
 JV5776'15 FEET HIGH.  STATION MARKED BY NAIL IN A PINE STUB WITH TOP
 JV5776'2 INCHES BELOW SURFACE OF GROUND.  THIS STUB IS INSIDE A 4-INCH
 JV5776'TILE PIPE SET WITH TOP 1 FOOT BELOW SURFACE.  REFERENCE MARK
 JV5776'IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A MARYLAND
 JV5776'SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE
 JV5776'POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5776'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF
 JV5776'POST.  IT IS 7.74 METERS (25.39 FEET) FROM STATION
 JV5776'N 34 DEG 31 MIN W.  DISTANCES AND BEARINGS FROM
 JV5776'THE STATION TO OTHER POINTS OF REFERENCE ARE AS FOLLOWS--S
 JV5776'CHIMNEY OF HOUSE, 1-1/2 MILES, S 42 DEG 16 MIN W.  NAIL IN BLAZE
 JV5776'IN 6-INCH TWIN TREE, 9.01 METERS (29.56 FEET), N 31 DEG 15
 JV5776'MIN W.  NAIL IN BLAZE IN 6-INCH TWIN BLACK-HAW TREE, 5.42
 JV5776'METERS (17.78 FEET), N 11 DEG 31 MIN E.  CHIMNEY ON RED-ROOF COTTAGE
 JV5776'ON OPPOSITE SHORE, 1-1/2 MILES, N 47 DEG 10 MIN E.  N PEAK OF
 JV5776'WHITE BARN ON OPPOSITE SHORE, 1-1/2 MILES, N 61 DEG 19 MIN E.
 JV5776'CHIMNEY ON N END OF SMALL HOUSE ON OPPOSITE SHORE, 2 MILES,
 JV5776'N 72 DEG 53 MIN E.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3926 ***********************************************************************
 JU3926  DESIGNATION -  ISLAND 1898
 JU3926  PID         -  JU3926
 JU3926  STATE/COUNTY-  MD/CECIL
 JU3926  COUNTRY     -  US
 JU3926  USGS QUAD   -  NORTH EAST (2016)
 JU3926
 JU3926                         *CURRENT SURVEY CONTROL
 JU3926  ______________________________________________________________________
 JU3926* NAD 83(1991) POSITION- 39 31 02.01090(N) 075 52 31.13503(W)   ADJUSTED
 JU3926* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3926  ______________________________________________________________________
 JU3926  GEOID HEIGHT    -        -33.315 (meters)                     GEOID18
 JU3926  LAPLACE CORR    -         -1.02  (seconds)                    DEFLEC18
 JU3926  HORZ ORDER      -  THIRD
 JU3926
 JU3926.The horizontal coordinates were established by classical geodetic methods
 JU3926.and adjusted by the National Geodetic Survey in January 1992.
 JU3926
 JU3926.The orthometric height was scaled from a topographic map.
 JU3926
 JU3926.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3926.GEOID18 height accuracy estimate available here.
 JU3926
 JU3926.Click photographs - Photos may exist for this station.
 JU3926
 JU3926.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3926
 JU3926. The following values were computed from the NAD 83(1991) position.
 JU3926
 JU3926;                    North         East     Units Scale Factor Converg.
 JU3926;SPC MD       -   206,023.132   496,712.852   MT  1.00001245   +0 42 21.2
 JU3926;SPC MD       -   675,927.56  1,629,632.08   sFT  1.00001245   +0 42 21.2
 JU3926;UTM  18      - 4,374,541.903   424,759.271   MT  0.99966970   -0 33 25.2
 JU3926
 JU3926!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3926!SPC MD       -   1.00000526  x   1.00001245  =   1.00001771
 JU3926!UTM  18      -   1.00000526  x   0.99966970  =   0.99967496
 JU3926
 JU3926:                Primary Azimuth Mark                     Grid Az
 JU3926:SPC MD       -  COURT 1898                               242 16 29.6
 JU3926:UTM  18      -  COURT 1898                               243 32 16.0
 JU3926
 JU3926_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2475974541(NAD 83)
 JU3926
 JU3926|---------------------------------------------------------------------|
 JU3926| PID    Reference Object                     Distance      Geod. Az  |
 JU3926|                                                           dddmmss.s |
 JU3926| JU3923 COURT 1898                          APPROX. 0.9 KM 2425850.8 |
 JU3926|---------------------------------------------------------------------|
 JU3926
 JU3926                          SUPERSEDED SURVEY CONTROL
 JU3926
 JU3926  NAD 83(1986)-  39 31 02.00238(N)    075 52 31.14051(W) AD(       ) 3
 JU3926  NAD 27      -  39 31 01.60600(N)    075 52 32.35700(W) AD(       ) 3
 JU3926  USSD        -  39 31 01.98700(N)    075 52 32.18600(W) AD(       ) 3
 JU3926
 JU3926.Superseded values are not recommended for survey control.
 JU3926
 JU3926.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3926.See file dsdata.pdf to determine how the superseded data were derived.
 JU3926
 JU3926_MARKER: N = NAIL
 JU3926_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3926_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU3926+STABILITY: SURFACE MOTION
 JU3926
 JU3926  HISTORY     - Date     Condition        Report By
 JU3926  HISTORY     - 1898     MONUMENTED       CGS
 JU3926  HISTORY     - 1902     GOOD             CGS
 JU3926
 JU3926                          STATION DESCRIPTION
 JU3926
 JU3926'DESCRIBED BY COAST AND GEODETIC SURVEY 1902
 JU3926'IN ELK RIVER, ON THE NW END OF A SMALL ISLAND ABOUT 1/3 MILE S OF
 JU3926'THE MOUTH OF BACK CREEK, NEAR THE EDGE OF A LOW BLUFF, AND ABOUT
 JU3926'6 FEET ABOVE HIGHWATER MARK.
 JU3926'
 JU3926'MARKED BY A BOX 3 BY 3 INCHES AND 3 FEET DEEP, FILLED WITH
 JU3926'CEMENT, A NAIL IN TOP MARKING THE CENTER.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1590 ***********************************************************************
 HU1590  DESIGNATION -  ISLAND POINT HOUSE CEN CHIMNEY
 HU1590  PID         -  HU1590
 HU1590  STATE/COUNTY-  MD/WORCESTER
 HU1590  COUNTRY     -  US
 HU1590  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1590
 HU1590                         *CURRENT SURVEY CONTROL
 HU1590  ______________________________________________________________________
 HU1590* NAD 83(1993) POSITION- 38 12 49.47330(N) 075 11 58.45547(W)   ADJUSTED
 HU1590  ______________________________________________________________________
 HU1590  GEOID HEIGHT    -        -36.197 (meters)                     GEOID18
 HU1590  LAPLACE CORR    -         -0.09  (seconds)                    DEFLEC18
 HU1590  HORZ ORDER      -  THIRD
 HU1590
 HU1590.The horizontal coordinates were established by classical geodetic methods
 HU1590.and adjusted by the National Geodetic Survey in November 1994.
 HU1590
 HU1590.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1590.GEOID18 height accuracy estimate available here.
 HU1590
 HU1590.Click photographs - Photos may exist for this station.
 HU1590
 HU1590.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1590
 HU1590. The following values were computed from the NAD 83(1993) position.
 HU1590
 HU1590;                    North         East     Units Scale Factor Converg.
 HU1590;SPC MD       -    62,282.940   557,668.349   MT  1.00001613   +1 07 48.0
 HU1590;SPC MD       -   204,339.95  1,829,616.91   sFT  1.00001613   +1 07 48.0
 HU1590;UTM  18      - 4,229,549.458   482,529.173   MT  0.99960376   -0 07 24.4
 HU1590
 HU1590_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8252929549(NAD 83)
 HU1590
 HU1590                          SUPERSEDED SURVEY CONTROL
 HU1590
 HU1590  NAD 83(1991)-  38 12 49.47354(N)    075 11 58.45586(W) AD(       ) 3
 HU1590  NAD 83(1986)-  38 12 49.46056(N)    075 11 58.48899(W) AD(       ) 3
 HU1590  NAD 27      -  38 12 49.03748(N)    075 11 59.80501(W) AD(       ) 3
 HU1590
 HU1590.Superseded values are not recommended for survey control.
 HU1590
 HU1590.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1590.See file dsdata.pdf to determine how the superseded data were derived.
 HU1590
 HU1590_MARKER: 85 = CHIMNEY
 HU1590
 HU1590  HISTORY     - Date     Condition        Report By
 HU1590  HISTORY     - 1959     FIRST OBSERVED   CGS
 HU1590  HISTORY     - 1962     GOOD             CGS
 HU1590
 HU1590                          STATION DESCRIPTION
 HU1590
 HU1590'DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (WER)
 HU1590'THE STATION IS ABOUT 10 MILES SOUTH OF OCEAN CITY, 9 MILES SOUTH
 HU1590'OF BERLIN, 1 MILE WEST OF THE OCEAN BEACH FERRY LANDING AND ON
 HU1590'THE SOUTH EDGE OF ISLAND POINT.
 HU1590'
 HU1590'THE STATION IS A LARGE TWO-STORY BRICK HOUSE OWNED BY SENATOR
 HU1590'JOHNSON.  THE POINT INTERSECTED IS THE CENTER ONE OF THREE
 HU1590'CHIMNEYS.  THIS CHIMNEY IS ON THE HIGHEST PART OF THE HOUSE AND
 HU1590'IS ABOUT THE CENTER OF THE HOUSE.
 HU1590
 HU1590                          STATION RECOVERY (1962)
 HU1590
 HU1590'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (RMS)
 HU1590'THE STATION WAS RECOVERED IN GOOD CONDITION.  THE ORIGINAL
 HU1590'DESCRIPTION BY W.E.R. IN 1959 IS COMPLETE AND ADEQUATE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7137 ***********************************************************************
 HV7137  DESIGNATION -  ISLE
 HV7137  PID         -  HV7137
 HV7137  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7137  COUNTRY     -  US
 HV7137  USGS QUAD   -  SOUTH RIVER (2016)
 HV7137
 HV7137                         *CURRENT SURVEY CONTROL
 HV7137  ______________________________________________________________________
 HV7137* NAD 83(1991) POSITION- 38 57 35.31496(N) 076 35 34.07171(W)   ADJUSTED
 HV7137* NAVD 88 ORTHO HEIGHT -     3.    (meters)       10.    (feet) SCALED
 HV7137  ______________________________________________________________________
 HV7137  GEOID HEIGHT    -        -33.134 (meters)                     GEOID18
 HV7137  LAPLACE CORR    -         -5.24  (seconds)                    DEFLEC18
 HV7137  HORZ ORDER      -  THIRD
 HV7137
 HV7137.The horizontal coordinates were established by classical geodetic methods
 HV7137.and adjusted by the National Geodetic Survey in January 1992.
 HV7137
 HV7137.The orthometric height was scaled from a topographic map.
 HV7137
 HV7137.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7137.GEOID18 height accuracy estimate available here.
 HV7137
 HV7137.Click photographs - Photos may exist for this station.
 HV7137
 HV7137.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7137
 HV7137. The following values were computed from the NAD 83(1991) position.
 HV7137
 HV7137;                    North         East     Units Scale Factor Converg.
 HV7137;SPC MD       -   143,623.409   435,292.569   MT  0.99995092   +0 15 20.1
 HV7137;SPC MD       -   471,204.47  1,428,122.37   sFT  0.99995092   +0 15 20.1
 HV7137;UTM  18      - 4,313,522.952   361,995.100   MT  0.99983452   -1 00 06.0
 HV7137
 HV7137!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7137!SPC MD       -   1.00000477  x   0.99995092  =   0.99995569
 HV7137!UTM  18      -   1.00000477  x   0.99983452  =   0.99983929
 HV7137
 HV7137:                Primary Azimuth Mark                     Grid Az
 HV7137:SPC MD       -  BEAR                                     351 48 04.2
 HV7137:UTM  18      -  BEAR                                     353 03 30.3
 HV7137
 HV7137_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6199513522(NAD 83)
 HV7137
 HV7137|---------------------------------------------------------------------|
 HV7137| PID    Reference Object                     Distance      Geod. Az  |
 HV7137|                                                           dddmmss.s |
 HV7137| HV7138 GLEN                                369.523 METERS 06400     |
 HV7137| CX2932 ISLE RM                              12.103 METERS 19847     |
 HV7137| HV7110 BEAR                                400.781 METERS 3520324.3 |
 HV7137|---------------------------------------------------------------------|
 HV7137
 HV7137                          SUPERSEDED SURVEY CONTROL
 HV7137
 HV7137  NAD 83(1986)-  38 57 35.31167(N)    076 35 34.08288(W) AD(       ) 3
 HV7137  NAD 27      -  38 57 34.91300(N)    076 35 35.21100(W) AD(       ) 3
 HV7137
 HV7137.Superseded values are not recommended for survey control.
 HV7137
 HV7137.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7137.See file dsdata.pdf to determine how the superseded data were derived.
 HV7137
 HV7137_MARKER: DS = TRIANGULATION STATION DISK
 HV7137_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7137_STAMPING: ISLE 1933
 HV7137_MARK LOGO: CGS
 HV7137_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7137+STABILITY: SURFACE MOTION
 HV7137
 HV7137  HISTORY     - Date     Condition        Report By
 HV7137  HISTORY     - 1933     MONUMENTED       CGS
 HV7137  HISTORY     - 19981218 MARK NOT FOUND   USPSQD
 HV7137
 HV7137                          STATION DESCRIPTION
 HV7137
 HV7137'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7137'STATION IS ON THE SOUTH SHORE OF SOUTH RIVER IN THE BACK OF A COVE
 HV7137'ABOUT 400 YARDS SOUTHWEST OF BEARDS POINT ON A KNOLL ON TOP OF A
 HV7137'40-FOOT BLUFF AND ABOUT 12 METERS BACK FROM THE EDGE OF THE BLUFF
 HV7137'IN A WOODS OF LARGE TREES AND UNDERBRUSH.
 HV7137'
 HV7137'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7137'CONCRETE AS DESCRIBED.
 HV7137
 HV7137                          STATION RECOVERY (1998)
 HV7137
 HV7137'RECOVERY NOTE BY US POWER SQUADRON 1998
 HV7137'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV5103 ***********************************************************************
 JV5103  DESIGNATION -  ISLE
 JV5103  PID         -  JV5103
 JV5103  STATE/COUNTY-  MD/KENT
 JV5103  COUNTRY     -  US
 JV5103  USGS QUAD   -  ROCK HALL (2016)
 JV5103
 JV5103                         *CURRENT SURVEY CONTROL
 JV5103  ______________________________________________________________________
 JV5103* NAD 83(1991) POSITION- 39 07 39.34661(N) 076 10 08.92530(W)   ADJUSTED
 JV5103* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 JV5103  ______________________________________________________________________
 JV5103  GEOID HEIGHT    -        -33.449 (meters)                     GEOID18
 JV5103  LAPLACE CORR    -         -2.03  (seconds)                    DEFLEC18
 JV5103  HORZ ORDER      -  THIRD
 JV5103
 JV5103.The horizontal coordinates were established by classical geodetic methods
 JV5103.and adjusted by the National Geodetic Survey in January 1992.
 JV5103
 JV5103.The orthometric height was scaled from a topographic map.
 JV5103
 JV5103.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV5103.GEOID18 height accuracy estimate available here.
 JV5103
 JV5103.Click photographs - Photos may exist for this station.
 JV5103
 JV5103.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV5103
 JV5103. The following values were computed from the NAD 83(1991) position.
 JV5103
 JV5103;                    North         East     Units Scale Factor Converg.
 JV5103;SPC MD       -   162,497.822   471,840.550   MT  0.99995948   +0 31 17.3
 JV5103;SPC MD       -   533,128.27  1,548,030.20   sFT  0.99995948   +0 31 17.3
 JV5103;UTM  18      - 4,331,586.938   398,942.243   MT  0.99972575   -0 44 16.3
 JV5103
 JV5103!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV5103!SPC MD       -   1.00000513  x   0.99995948  =   0.99996461
 JV5103!UTM  18      -   1.00000513  x   0.99972575  =   0.99973088
 JV5103
 JV5103:                Primary Azimuth Mark                     Grid Az
 JV5103:SPC MD       -  EAGLE                                    316 03 10.9
 JV5103:UTM  18      -  EAGLE                                    317 18 44.5
 JV5103
 JV5103_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ9894231586(NAD 83)
 JV5103
 JV5103|---------------------------------------------------------------------|
 JV5103| PID    Reference Object                     Distance      Geod. Az  |
 JV5103|                                                           dddmmss.s |
 JV5103| CA9558 ISLE RM                               5.550 METERS 25931     |
 JV5103| JV5109 EAGLE                               APPROX. 0.8 KM 3163428.2 |
 JV5103|---------------------------------------------------------------------|
 JV5103
 JV5103                          SUPERSEDED SURVEY CONTROL
 JV5103
 JV5103  NAD 83(1986)-  39 07 39.34105(N)    076 10 08.93685(W) AD(       ) 3
 JV5103  NAD 27      -  39 07 38.94600(N)    076 10 10.10900(W) AD(       ) 3
 JV5103  USSD        -  39 07 39.34700(N)    076 10 09.93300(W) AD(       ) 3
 JV5103
 JV5103.Superseded values are not recommended for survey control.
 JV5103
 JV5103.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV5103.See file dsdata.pdf to determine how the superseded data were derived.
 JV5103
 JV5103_MARKER: Z = SEE DESCRIPTION
 JV5103_SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE
 JV5103_SP_SET: IN CONCRETE IN A CLAY TILE PIPE
 JV5103
 JV5103  HISTORY     - Date     Condition        Report By
 JV5103  HISTORY     - 1909     MONUMENTED       MDSFC
 JV5103  HISTORY     - 1941     MARK NOT FOUND   CGS
 JV5103
 JV5103                          STATION DESCRIPTION
 JV5103
 JV5103'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1909 (CCY)
 JV5103'STATION IS ON THE WESTERN SHORE OF THE W FORK OF LANGFORD CREEK,
 JV5103'ON ISLAND POINT, ABOUT 1/4 MILE N OF MAIN BODY OF CREEK AND 3/8
 JV5103'MILE NW OF CACAWAY ISLAND, ON A LOW SAND POINT, ABOUT 1 FOOT
 JV5103'ABOVE HIGH WATER, 5 YARDS S OF SHORE, 8 YARDS N OF SHORE, 50
 JV5103'YARDS W OF EXTREME END OF POINT, AND 20 YARDS E OF FOOT OF WOODED
 JV5103'BLUFF 15 FEET HIGH.
 JV5103'
 JV5103'STATION MARK IS CENTER OF 2-INCH TILE PIPE PROJECTING 3 INCHES
 JV5103'ABOVE SURFACE OF GROUND.  SUBSURFACE MARK IS CENTER OF 2-INCH
 JV5103'DRAINTILE PIPE, BURIED WITH THE TOP 2 INCHES BELOW THE SURFACE
 JV5103'MARK.
 JV5103'
 JV5103'REFERENCE MARK IS MARKED BY A HOLE IN THE CENTER OF THE TOP OF A
 JV5103'MARYLAND SHELL FISH SURVEY STANDARD MONUMENT, AN 8-INCH SQUARE
 JV5103'CONCRETE POST 2 FEET LONG, WITH TOP PROJECTING ABOUT 4 INCHES.  THE
 JV5103'LETTERS M.S.F.C. AND U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  IT
 JV5103'IS 5.55 METERS (18.21 FEET) FROM THE STATION S 79 DEG 31 MIN W.
 JV5103'
 JV5103'DISTANCES AND BEARINGS TO VARIOUS POINTS OF REFERENCE ARE AS
 JV5103'FOLLOWS--LONE CEDAR TREE ON DRUM POINT, 1 MILE, S 11 DEG 25 MIN W. S
 JV5103'CHIMNEY OF HOUSE, 1-1/4 MILES, N 47 DEG 30 MIN W. S GABLE OF LEARYS
 JV5103'CORNCRIB, 1-3/4 MILES, N 41 DEG 45 MIN W. W CHIMNEY OF HOUSE, 1
 JV5103'1/4 MILES, N 03 DEG 52 MIN E. CHIMNEY OF SMALL HOUSE, 1/2 MILE,
 JV5103'N 32 DEG 25 MIN E. N CHIMNEY OF HOUSE, 1-1/4 MILES, S 81 DEG 13
 JV5103'MIN E.  N GABLE OF BARN, 1 MILE, S 69 DEG 28 MIN E.
 JV5103
 JV5103                          STATION RECOVERY (1941)
 JV5103
 JV5103'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (LWS)
 JV5103'SEARCHED FOR BUT NOT FOUND.  STATION WAS ON SAND POINT WHICH HAS
 JV5103'MOVED BACK.  NO SIGN OF REFERENCE MARK.  RECOMMEND THAT STATION
 JV5103'BE CONSIDERED LOST.  PRESENT RESIDENT HAS LIVED HERE AND HUNTED FOR
 JV5103'EIGHT YEARS AND NEVER SAW IT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1864 ***********************************************************************
 HU1864  DESIGNATION -  IVEE
 HU1864  PID         -  HU1864
 HU1864  STATE/COUNTY-  MD/SOMERSET
 HU1864  COUNTRY     -  US
 HU1864  USGS QUAD   -  MONIE (2016)
 HU1864
 HU1864                         *CURRENT SURVEY CONTROL
 HU1864  ______________________________________________________________________
 HU1864* NAD 83(1991) POSITION- 38 14 56.95375(N) 075 50 03.02508(W)   ADJUSTED
 HU1864* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 HU1864  ______________________________________________________________________
 HU1864  GEOID HEIGHT    -        -35.829 (meters)                     GEOID18
 HU1864  LAPLACE CORR    -         -1.72  (seconds)                    DEFLEC18
 HU1864  HORZ ORDER      -  THIRD
 HU1864
 HU1864.The horizontal coordinates were established by classical geodetic methods
 HU1864.and adjusted by the National Geodetic Survey in January 1992.
 HU1864
 HU1864.The orthometric height was scaled from a topographic map.
 HU1864
 HU1864.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1864.GEOID18 height accuracy estimate available here.
 HU1864
 HU1864.Click photographs - Photos may exist for this station.
 HU1864
 HU1864.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU1864
 HU1864. The following values were computed from the NAD 83(1991) position.
 HU1864
 HU1864;                    North         East     Units Scale Factor Converg.
 HU1864;SPC MD       -    65,310.444   502,048.155   MT  1.00000923   +0 43 54.2
 HU1864;SPC MD       -   214,272.68  1,647,136.32   sFT  1.00000923   +0 43 54.2
 HU1864;UTM  18      - 4,233,788.695   427,009.657   MT  0.99966561   -0 30 59.2
 HU1864
 HU1864!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU1864!SPC MD       -   1.00000566  x   1.00000923  =   1.00001489
 HU1864!UTM  18      -   1.00000566  x   0.99966561  =   0.99967127
 HU1864
 HU1864:                Primary Azimuth Mark                     Grid Az
 HU1864:SPC MD       -  JONES                                    078 09 34.5
 HU1864:UTM  18      -  JONES                                    079 24 27.9
 HU1864
 HU1864_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH2700933788(NAD 83)
 HU1864
 HU1864|---------------------------------------------------------------------|
 HU1864| PID    Reference Object                     Distance      Geod. Az  |
 HU1864|                                                           dddmmss.s |
 HU1864| HU1933 JONES                               APPROX. 1.3 KM 0785328.7 |
 HU1864| HU1865 MOUNT VERNON CHURCH SPIRE           APPROX. 0.6 KM 1572232.5 |
 HU1864|---------------------------------------------------------------------|
 HU1864
 HU1864                          SUPERSEDED SURVEY CONTROL
 HU1864
 HU1864  NAD 83(1986)-  38 14 56.95211(N)    075 50 03.04748(W) AD(       ) 3
 HU1864  NAD 27      -  38 14 56.51000(N)    075 50 04.29400(W) AD(       ) 3
 HU1864  USSD        -  38 14 56.89100(N)    075 50 04.00500(W) AD(       ) 3
 HU1864
 HU1864.Superseded values are not recommended for survey control.
 HU1864
 HU1864.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1864.See file dsdata.pdf to determine how the superseded data were derived.
 HU1864
 HU1864_MARKER: H = DRILL HOLE
 HU1864_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU1864_STAMPING: M.S.F.C.  U.S.C.S.
 HU1864_MARK LOGO: MDSFC
 HU1864_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1864+STABILITY: SURFACE MOTION
 HU1864
 HU1864  HISTORY     - Date     Condition        Report By
 HU1864  HISTORY     - 1907     MONUMENTED       MDSFC
 HU1864  HISTORY     - 1932     MARK NOT FOUND   CGS
 HU1864
 HU1864                          STATION DESCRIPTION
 HU1864
 HU1864'DESCRIBED BY MARYLAND SHELL FISHERIES COMMISSION 1907 (CCY)
 HU1864'STATION IS ON THE SE SHORE OF WICOMICO RIVER, ABOUT 1/4 MILE NW
 HU1864'OF MOUNT VERNON CHURCH, ON GRASSLAND ABOUT 1 FOOT ABOVE AND 10
 HU1864'FEET BACK OF HIGH-WATER MARK.  A SMALL COVE MAKES IN ABOUT 100
 HU1864'YARDS E OF STATION.  A SMALL LONE PINE STANDS ABOUT 110 YARDS TO
 HU1864'THE E-SE AND A SAND BLUFF WITH PINE TREES ABOUT 100 YARDS TO THE
 HU1864'SW.  BEYOND THE WOODS ALONG THE BEACH IS A BLUFF 15 FEET HIGH,
 HU1864'UPON WHICH ARE SEVERAL HOUSES.  STATION MARK IS MARKED BY A
 HU1864'HOLE IN THE CENTER OF THE TOP OF A MARYLAND SHELL FISH SURVEY
 HU1864'STANDARD MONUMENT, AN 8-INCH SQUARE CONCRETE POST 2 FEET LONG,
 HU1864'WITH TOP PROJECTING ABOUT 4 INCHES.  THE LETTERS M.S.F.C. AND
 HU1864'U.S.C.S. ARE COUNTER-SUNK IN TOP OF POST.  DISTANCES AND
 HU1864'BEARINGS TO POINTS OF REFERENCE ARE AS FOLLOWS--WHITE-HOUSE
 HU1864'CHIMNEY, 1/4 MILE, S 32 DEG 57 MIN W.  CHIMNEY ON END OF WHITE
 HU1864'HOUSE, 2 MILES, N 07 DEG 17 MIN E.  CHIMNEY OF GREEN-TRIMMED
 HU1864'HOUSE NEAR STATION CREEK, 1-1/4 MILES, N 42 DEG 50 MIN E.
 HU1864'OLD-STYLE WINDMILL, 2-1/8 MILES, N 62 DEG 09 MIN E.  SLATE-COLORED
 HU1864'HOUSE, 1/2 MILE, N 73 DEG 44 MIN E.  CHIMNEY ON MIDDLE OF WHITE
 HU1864'HOUSE BEYOND WOODS, 1 MILE, S 85 DEG 27 MIN E.  LONE PINE
 HU1864'TREE, 110 YARDS, S 64 DEG 45 MIN E.
 HU1864
 HU1864                          STATION RECOVERY (1932)
 HU1864
 HU1864'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (EHB)
 HU1864'THIS STATION IS LOST.  THE CENTER MARK HAS BEEN REMOVED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7213 ***********************************************************************
 HV7213  DESIGNATION -  IVEY
 HV7213  PID         -  HV7213
 HV7213  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV7213  COUNTRY     -  US
 HV7213  USGS QUAD   -  DEALE (2016)
 HV7213
 HV7213                         *CURRENT SURVEY CONTROL
 HV7213  ______________________________________________________________________
 HV7213* NAD 83(1991) POSITION- 38 51 43.56429(N) 076 31 17.56737(W)   ADJUSTED
 HV7213* NAVD 88 ORTHO HEIGHT -     1.    (meters)        3.    (feet) SCALED
 HV7213  ______________________________________________________________________
 HV7213  GEOID HEIGHT    -        -33.464 (meters)                     GEOID18
 HV7213  LAPLACE CORR    -         -3.65  (seconds)                    DEFLEC18
 HV7213  HORZ ORDER      -  THIRD
 HV7213
 HV7213.The horizontal coordinates were established by classical geodetic methods
 HV7213.and adjusted by the National Geodetic Survey in January 1992.
 HV7213
 HV7213.The orthometric height was scaled from a topographic map.
 HV7213
 HV7213.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7213.GEOID18 height accuracy estimate available here.
 HV7213
 HV7213.Click photographs - Photos may exist for this station.
 HV7213
 HV7213.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV7213
 HV7213. The following values were computed from the NAD 83(1991) position.
 HV7213
 HV7213;                    North         East     Units Scale Factor Converg.
 HV7213;SPC MD       -   132,807.062   441,524.766   MT  0.99994988   +0 18 01.1
 HV7213;SPC MD       -   435,717.84  1,448,569.17   sFT  0.99994988   +0 18 01.1
 HV7213;UTM  18      - 4,302,573.956   367,987.925   MT  0.99981460   -0 57 17.4
 HV7213
 HV7213!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV7213!SPC MD       -   1.00000513  x   0.99994988  =   0.99995501
 HV7213!UTM  18      -   1.00000513  x   0.99981460  =   0.99981973
 HV7213
 HV7213:                Primary Azimuth Mark                     Grid Az
 HV7213:SPC MD       -  WINTERS                                  114 39 13.7
 HV7213:UTM  18      -  WINTERS                                  115 54 32.2
 HV7213
 HV7213_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6798702573(NAD 83)
 HV7213
 HV7213|---------------------------------------------------------------------|
 HV7213| PID    Reference Object                     Distance      Geod. Az  |
 HV7213|                                                           dddmmss.s |
 HV7213| HV6287 WINTERS                             APPROX. 2.4 KM 1145714.8 |
 HV7213| HV7214 CEDAR POINT HOUSE WEST CHIMNEY      APPROX. 1.4 KM 2024425.4 |
 HV7213| HV7189 GALESVILLE TANK                     APPROX. 2.7 KM 2203400.9 |
 HV7213| CX2933 IVEY RM 1                             8.302 METERS 29813     |
 HV7213|---------------------------------------------------------------------|
 HV7213
 HV7213                          SUPERSEDED SURVEY CONTROL
 HV7213
 HV7213  NAD 83(1986)-  38 51 43.56060(N)    076 31 17.57897(W) AD(       ) 3
 HV7213  NAD 27      -  38 51 43.14900(N)    076 31 18.72500(W) AD(       ) 3
 HV7213
 HV7213.Superseded values are not recommended for survey control.
 HV7213
 HV7213.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7213.See file dsdata.pdf to determine how the superseded data were derived.
 HV7213
 HV7213_MARKER: DS = TRIANGULATION STATION DISK
 HV7213_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV7213_STAMPING: IVEY 1933
 HV7213_MARK LOGO: CGS
 HV7213_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7213+STABILITY: SURFACE MOTION
 HV7213
 HV7213  HISTORY     - Date     Condition        Report By
 HV7213  HISTORY     - 1933     MONUMENTED       CGS
 HV7213  HISTORY     - 1934     MARK NOT FOUND   CGS
 HV7213  HISTORY     - 1960     MARK NOT FOUND   CGS
 HV7213  HISTORY     - 20031002 MARK NOT FOUND   USPSQD
 HV7213
 HV7213                          STATION DESCRIPTION
 HV7213
 HV7213'DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (JAB)
 HV7213'STATION IS ON THE N SIDE OF WEST RIVER ABOUT 1 MILE FROM THE MOUTH
 HV7213'AND NEAR THE SW TIP OF CHESTON POINT AT E ENTRANCE TO RHODE RIVER.
 HV7213'THE STATION IS 10 FEET N OF THE EDGE OF A 10-FOOT BLUFF ALONG WEST
 HV7213'RIVER, AND ABOUT 200 FEET FROM THE EXTREME SW TIP OF THE POINT, IN
 HV7213'LAND OVERGROWN WITH SCRUB TREES AND UNDERBRUSH.
 HV7213'
 HV7213'STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN
 HV7213'CONCRETE AS DESCRIBED.
 HV7213
 HV7213                          STATION RECOVERY (1934)
 HV7213
 HV7213'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (JCP)
 HV7213'THE STATION IS LOST.  THE REFERENCE MARK WAS FOUND READILY ABOUT 4
 HV7213'INCHES ABOVE THE SURFACE OF THE GROUND AND ABOUT 5 METERS FROM THE
 HV7213'EDGE OF THE BLUFF.
 HV7213'
 HV7213'THE STATION COULD NOT BE FOUND.  MEASUREMENT TAKEN FROM REFERENCE
 HV7213'MARK TO STATION SHOWED STATION SHOULD BE ABOUT 2 METERS OVER EDGE
 HV7213'OF BLUFF WHICH HAS BEEN WASHED AWAY, INDICATING THAT THE STATION
 HV7213'HAS BEEN WASHED AWAY.
 HV7213'
 HV7213'IT IS RECOMMENDED THAT THE STATION BE LISTED AS LOST.
 HV7213
 HV7213                          STATION RECOVERY (1960)
 HV7213
 HV7213'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (GFW)
 HV7213'THE STATION HAS BEEN PREVIOUSLY LISTED AS LOST.  REFERENCE MARK
 HV7213'DESTROYED.  MARK WAS FOUUND ABOUT 8 METERS OFF THE BANK IN THE RIVER.
 HV7213
 HV7213                          STATION RECOVERY (2003)
 HV7213
 HV7213'RECOVERY NOTE BY US POWER SQUADRON 2003 (KEN)
 HV7213'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV4948 ***********************************************************************
 HV4948  DESIGNATION -  IVY
 HV4948  PID         -  HV4948
 HV4948  STATE/COUNTY-  MD/CHARLES
 HV4948  COUNTRY     -  US
 HV4948  USGS QUAD   -  MOUNT VERNON (2019)
 HV4948
 HV4948                         *CURRENT SURVEY CONTROL
 HV4948  ______________________________________________________________________
 HV4948* NAD 83(1993) POSITION- 38 41 18.12027(N) 077 05 30.95881(W)   ADJUSTED
 HV4948* NAVD 88 ORTHO HEIGHT -     8.    (meters)       26.    (feet) SCALED
 HV4948  ______________________________________________________________________
 HV4948  GEOID HEIGHT    -        -32.415 (meters)                     GEOID18
 HV4948  LAPLACE CORR    -         -1.71  (seconds)                    DEFLEC18
 HV4948  HORZ ORDER      -  THIRD
 HV4948
 HV4948.The horizontal coordinates were established by classical geodetic methods
 HV4948.and adjusted by the National Geodetic Survey in November 1994.
 HV4948
 HV4948.The orthometric height was scaled from a topographic map.
 HV4948
 HV4948.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV4948.GEOID18 height accuracy estimate available here.
 HV4948
 HV4948.Click photographs - Photos may exist for this station.
 HV4948
 HV4948.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV4948
 HV4948. The following values were computed from the NAD 83(1993) position.
 HV4948
 HV4948;                    North         East     Units Scale Factor Converg.
 HV4948;SPC MD       -   113,416.732   392,001.719   MT  0.99995517   -0 03 27.7
 HV4948;SPC MD       -   372,101.39  1,286,092.31   sFT  0.99995517   -0 03 27.7
 HV4948;SPC VA N     - 2,114,346.959 3,622,497.990   MT  0.99994915   +0 52 43.7
 HV4948;SPC VA N     - 6,936,819.98 11,884,812.16   sFT  0.99994915   +0 52 43.7
 HV4948;UTM  18      - 4,284,271.969   318,055.015   MT  1.00000767   -1 18 28.8
 HV4948
 HV4948!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV4948!SPC MD       -   1.00000388  x   0.99995517  =   0.99995905
 HV4948!SPC VA N     -   1.00000388  x   0.99994915  =   0.99995302
 HV4948!UTM  18      -   1.00000388  x   1.00000767  =   1.00001155
 HV4948
 HV4948:                Primary Azimuth Mark                     Grid Az
 HV4948:SPC MD       -  BRYAN 2                                  069 11 48.6
 HV4948:SPC VA N     -  BRYAN 2                                  068 15 37.2
 HV4948:UTM  18      -  BRYAN 2                                  070 26 49.7
 HV4948
 HV4948_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH1805584271(NAD 83)
 HV4948
 HV4948|---------------------------------------------------------------------|
 HV4948| PID    Reference Object                     Distance      Geod. Az  |
 HV4948|                                                           dddmmss.s |
 HV4948| HV4921 MT VERNON DOCK VANE ON CUPOLA       APPROX. 1.9 KM 0102737.2 |
 HV4948| HV4950 BRYAN PT END OF DOCK                APPROX. 2.4 KM 0680720.0 |
 HV4948| HV4946 BRYAN 2                             APPROX. 2.2 KM 0690820.9 |
 HV4948| DC6388 IVY RM                                7.800 METERS 16333     |
 HV4948| HV4944 MARSHALL HALL END OF DOCK           APPROX. 0.7 KM 2555020.8 |
 HV4948| HV4911 CONCRETE RNG POST S MT VERNON       APPROX. 1.3 KM 3453648.5 |
 HV4948|---------------------------------------------------------------------|
 HV4948
 HV4948                          SUPERSEDED SURVEY CONTROL
 HV4948
 HV4948  NAD 83(1991)-  38 41 18.11815(N)    077 05 30.96172(W) AD(       ) 3
 HV4948  NAD 83(1986)-  38 41 18.11913(N)    077 05 30.97396(W) AD(       ) 3
 HV4948  NAD 27      -  38 41 17.69800(N)    077 05 32.05600(W) AD(       ) 3
 HV4948
 HV4948.Superseded values are not recommended for survey control.
 HV4948
 HV4948.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV4948.See file dsdata.pdf to determine how the superseded data were derived.
 HV4948
 HV4948_MARKER: DS = TRIANGULATION STATION DISK
 HV4948_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV4948_STAMPING: IVY 1928
 HV4948_MARK LOGO: CGS
 HV4948_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV4948+STABILITY: SURFACE MOTION
 HV4948
 HV4948  HISTORY     - Date     Condition        Report By
 HV4948  HISTORY     - 1928     MONUMENTED       CGS
 HV4948  HISTORY     - 1929     GOOD             CGS
 HV4948  HISTORY     - 1958     SEE DESCRIPTION  CGS
 HV4948
 HV4948                          STATION DESCRIPTION
 HV4948
 HV4948'DESCRIBED BY COAST AND GEODETIC SURVEY 1928 (CP)
 HV4948'STATION IS ON E SHORE OF POTOMAC RIVER ABOUT 1/3 MILE ENE OF
 HV4948'MARSHALL HALL ON A SLOPING WOODED BLUFF FACE.  ABOUT 10 FEET ABOVE
 HV4948'HIGH-WATER LINE.  A LEVEL SECTION WAS CUT OUT OF THE SLOPING SIDE
 HV4948'OF THE YELLOW CLAY BANK FOR THE STATION.  DIRECTLY ABOVE THE
 HV4948'STATION ON TOP OF THE BLUFF, WHICH IS ABOUT 20 FEET ABOVE
 HV4948'HIGH-WATER LINE, ARE SOME OLD PIG STYES AND BUILDINGS WITH A
 HV4948'CULTIVATED FIELD ADJOINING.  MARK IS SEVERAL INCHES ABOVE
 HV4948'SURFACE STAMPED IVY 1928.
 HV4948'
 HV4948'SURFACE, UNDERGROUND, AND REFERENCE MARK ARE STANDARD BRONZE
 HV4948'DISKS SET IN CONCRETE.
 HV4948'
 HV4948'REFERENCE MARK IS ON TOP OF BLUFF ABOVE STATION ABOUT 3-1/2
 HV4948'METERS BACK FROM EDGE OF BLUFF AND 2 METERS TOWARD RIVER FROM PIG
 HV4948'STYE FENCE, STAMPED IVY 1928.
 HV4948'
 HV4948'STATION LOCATION REQUIRED SOME CLEARING TO SEE MARSHALL HALL AND
 HV4948'BRYANTS POINT.
 HV4948'
 HV4948'A WITNESS MARK, A TRIANGULAR BLAZE IN A 4-FOOT CIRCUMFERENCE
 HV4948'LOCUST TREE IS N OF STATION, TREE LEANING OUT TOWARD
 HV4948'RIVER.  DISTANCE 6.1 METERS.
 HV4948'
 HV4948'HEIGHT OF SIGNAL ABOVE STATION MARK - 2.0 METERS.
 HV4948
 HV4948                          STATION RECOVERY (1929)
 HV4948
 HV4948'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (EBL)
 HV4948'THE STATION WAS RECOVERED AS DESCRIBED.  THERE HAD BEEN SOME
 HV4948'CAVING OF THE BANK ON WHICH THE STATION IS LOCATED, BUT THE MARK
 HV4948'APPEARED TO BE UNDISTURBED.  A TRIANGLE WAS CLOSED AT THE STATION,
 HV4948'AND COMPARISON WITH THE RESULTS OF CHARLES PIERCE INDICATED THAT
 HV4948'THERE HAD BEEN NO MOVEMENT.  THE STATION IS ON THE NON-PROMINENT,
 HV4948'ROUNDING POINT N OF MARSHALL HALL, APPROXIMATELY HALFWAY BETWEEN
 HV4948'MARSHALL HALL, AND THE FIRST HOUSE TO THE NORTHWARD THAT STANDS
 HV4948'AT THE TOP OF THE BLUFF ALONG THE WATERS EDGE.  THE STATION WAS
 HV4948'RECOVERED FROM THE PROGRESS SKETCH OF CHARLES PIERCE, THE OLD
 HV4948'STAND WAS INDISTINCT ON ACCOUNT OF HAVING ASSUMED THE COLOR OF THE
 HV4948'SURROUNDING VEGETATION.
 HV4948
 HV4948                          STATION RECOVERY (1958)
 HV4948
 HV4948'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JPR)
 HV4948'THE STATION IS DESTROYED.  THE MONUMENT WITH STATION MARK WAS
 HV4948'FOUND LYING ON THE BEACH AND THE DISK WAS REMOVED BY THIS
 HV4948'PARTY.  REFERENCE MARK 1 WAS RECOVERED IN GOOD CONDITION.  IT
 HV4948'IS NOW LOCATED 85 PACES SW, ALONG THE TOP OF THE BLUFF, FROM A
 HV4948'FRONT YARD FENCE OF A NEW HOUSE.  THE REFERENCE MARK IS STILL 3
 HV4948'1/2 METERS BACK FROM EDGE OF BLUFF.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU3564 ***********************************************************************
 JU3564  DESIGNATION -  J
 JU3564  PID         -  JU3564
 JU3564  STATE/COUNTY-  MD/CECIL
 JU3564  COUNTRY     -  US
 JU3564  USGS QUAD   -  EARLEVILLE (2016)
 JU3564
 JU3564                         *CURRENT SURVEY CONTROL
 JU3564  ______________________________________________________________________
 JU3564* NAD 83(1991) POSITION- 39 27 30.66914(N) 075 59 23.28667(W)   ADJUSTED
 JU3564* NAVD 88 ORTHO HEIGHT -    -0.    (meters)       -0.    (feet) SCALED
 JU3564  ______________________________________________________________________
 JU3564  GEOID HEIGHT    -        -33.355 (meters)                     GEOID18
 JU3564  LAPLACE CORR    -         -0.77  (seconds)                    DEFLEC18
 JU3564  HORZ ORDER      -  THIRD
 JU3564
 JU3564.The horizontal coordinates were established by classical geodetic methods
 JU3564.and adjusted by the National Geodetic Survey in January 1992.
 JU3564
 JU3564.The orthometric height was scaled from a topographic map.
 JU3564
 JU3564.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU3564.GEOID18 height accuracy estimate available here.
 JU3564
 JU3564.Click photographs - Photos may exist for this station.
 JU3564
 JU3564.The Laplace correction was computed from DEFLEC18 derived deflections.
 JU3564
 JU3564. The following values were computed from the NAD 83(1991) position.
 JU3564
 JU3564;                    North         East     Units Scale Factor Converg.
 JU3564;SPC MD       -   199,390.543   486,940.579   MT  1.00000150   +0 38 02.5
 JU3564;SPC MD       -   654,167.14  1,597,570.88   sFT  1.00000150   +0 38 02.5
 JU3564;UTM  18      - 4,368,128.427   414,846.425   MT  0.99968928   -0 37 44.7
 JU3564
 JU3564!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JU3564!SPC MD       -   1.00000527  x   1.00000150  =   1.00000677
 JU3564!UTM  18      -   1.00000527  x   0.99968928  =   0.99969455
 JU3564
 JU3564:                Primary Azimuth Mark                     Grid Az
 JU3564:SPC MD       -  POW USE 1937                             040 17 14.6
 JU3564:UTM  18      -  POW USE 1937                             041 33 01.8
 JU3564
 JU3564_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ1484668128(NAD 83)
 JU3564
 JU3564|---------------------------------------------------------------------|
 JU3564| PID    Reference Object                     Distance      Geod. Az  |
 JU3564|                                                           dddmmss.s |
 JU3564| JU3563 POW USE 1937                        402.105 METERS 0405517.1 |
 JU3564| JU3559 ARNOLDS BAR LIGHT                   APPROX. 2.1 KM 0763300.1 |
 JU3564| CB2123 J RM 1                               10.363 METERS 27831     |
 JU3564| CB2124 J RM 2                               13.411 METERS 33812     |
 JU3564|---------------------------------------------------------------------|
 JU3564
 JU3564                          SUPERSEDED SURVEY CONTROL
 JU3564
 JU3564  NAD 83(1986)-  39 27 30.66146(N)    075 59 23.29295(W) AD(       ) 3
 JU3564  NAD 27      -  39 27 30.26500(N)    075 59 24.50100(W) AD(       ) 3
 JU3564
 JU3564.Superseded values are not recommended for survey control.
 JU3564
 JU3564.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU3564.See file dsdata.pdf to determine how the superseded data were derived.
 JU3564
 JU3564_MARKER: DD = SURVEY DISK
 JU3564_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU3564
 JU3564  HISTORY     - Date     Condition        Report By
 JU3564  HISTORY     - 1937     MONUMENTED       USACE
 JU3564
 JU3564                          STATION DESCRIPTION
 JU3564
 JU3564'DESCRIBED BY US ARMY CORPS OF ENGINEERS 1937 (JCP)
 JU3564'LOCATED ON THE N SIDE OF ELK RIVER ABOUT 1 MILE NE OF TURKEY POINT
 JU3564'ON JACOBS NOSE.  IT IS ON THE HIGH-WATER LINE AND 40 METERS SW
 JU3564'FROM A SMALL OPENING IN THE FRINGE OF TREES ALONG THE SHORE
 JU3564'LINE.  THE STATION IS MARKED BY A STANDARD U.S.E.D. DISK (STAMPED
 JU3564'J) SET ATOP A 6-INCH SQUARE CONCRETE POST AND PROJECTS 6 INCHES
 JU3564'ABOVE GROUND.  THE REFERENCE MARKS ARE WOODEN STAKES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0851 ***********************************************************************
 HV0851  DESIGNATION -  J 1
 HV0851  PID         -  HV0851
 HV0851  STATE/COUNTY-  MD/CHARLES
 HV0851  COUNTRY     -  US
 HV0851  USGS QUAD   -  LA PLATA (2016)
 HV0851
 HV0851                         *CURRENT SURVEY CONTROL
 HV0851  ______________________________________________________________________
 HV0851* NAD 83(1986) POSITION- 38 35 31.     (N) 076 58 52.     (W)   SCALED
 HV0851* NAVD 88 ORTHO HEIGHT -    62.912 (meters)      206.40  (feet) ADJUSTED
 HV0851  ______________________________________________________________________
 HV0851  GEOID HEIGHT    -        -32.818 (meters)                     GEOID18
 HV0851  DYNAMIC HEIGHT  -         62.875 (meters)      206.28  (feet) COMP
 HV0851  MODELED GRAVITY -    980,044.7   (mgal)                       NAVD 88
 HV0851
 HV0851  VERT ORDER      -  FIRST     CLASS II
 HV0851
 HV0851.The horizontal coordinates were scaled from a map and have
 HV0851.an estimated accuracy of +/- 6 seconds.
 HV0851
 HV0851.The orthometric height was determined by differential leveling and
 HV0851.adjusted by the NATIONAL GEODETIC SURVEY
 HV0851.in June 1991.
 HV0851
 HV0851.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0851.GEOID18 height accuracy estimate available here.
 HV0851
 HV0851.Click photographs - Photos may exist for this station.
 HV0851
 HV0851.The dynamic height is computed by dividing the NAVD 88
 HV0851.geopotential number by the normal gravity value computed on the
 HV0851.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0851.degrees latitude (g = 980.6199 gals.).
 HV0851
 HV0851.The modeled gravity was interpolated from observed gravity values.
 HV0851
 HV0851;                    North         East    Units  Estimated Accuracy
 HV0851;SPC MD       -   102,710.      401,650.      MT  (+/- 180 meters Scaled)
 HV0851
 HV0851_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH274733(NAD 83)
 HV0851
 HV0851                          SUPERSEDED SURVEY CONTROL
 HV0851
 HV0851  NGVD 29 (05/01/89)   63.164  (m)          207.23   (f) ADJUSTED    1 2
 HV0851  NGVD 29 (??/??/87)   63.142  (m)          207.16   (f) SUPERSEDED  1 2
 HV0851
 HV0851.Superseded values are not recommended for survey control.
 HV0851
 HV0851.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0851.See file dsdata.pdf to determine how the superseded data were derived.
 HV0851
 HV0851_MARKER: DB = BENCH MARK DISK
 HV0851_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0851_STAMPING: J 1 1917
 HV0851_MARK LOGO: CGS
 HV0851_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0851+STABILITY: SURFACE MOTION
 HV0851
 HV0851  HISTORY     - Date     Condition        Report By
 HV0851  HISTORY     - 1917     MONUMENTED       CGS
 HV0851  HISTORY     - 1971     GOOD             NGS
 HV0851
 HV0851                          STATION DESCRIPTION
 HV0851
 HV0851'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0851'5.6 MI SW FROM WALDORF.
 HV0851'ABOUT 3.75 MILES SOUTHWEST ALONG U.S. HIGHWAY 301 FROM THE
 HV0851'JUNCTION OF STATE HIGHWAY 5 AT WALDORF, THENCE 1.8 MILES
 HV0851'NORTHWEST ALONG STATE HIGHWAY 227, 178 FEET NORTHEAST OF THE
 HV0851'NORTHEAST CORNER OF A 2-STORY BRICK HOUSE, 45 FEET SOUTHWEST
 HV0851'OF THE CENTER OF THE INTERSECTION OF THE HIGHWAY, TURKEY HILL
 HV0851'ROAD, 27 1/2 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY,
 HV0851'15 FEET NORTHWEST OF A 14 INCH OAK TREE, 10 1/2 FEET
 HV0851'SOUTHWEST OF A TELEPHONE POLE, 0.6 FOOT EAST OF A METAL
 HV0851'WITNESS POST, 2 FEET ABOVE THE LEVEL OF THE ROAD AND SET IN
 HV0851'THE TOP OF A CONCRETE POST PROJECTING 4 INCHES ABOVE THE LEVEL
 HV0851'OF THE GROUND.  NOTE-- STAMPING NO LONGER LEGIBLE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0981 ***********************************************************************
 HV0981  DESIGNATION -  J 100
 HV0981  PID         -  HV0981
 HV0981  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0981  COUNTRY     -  US
 HV0981  USGS QUAD   -  BENEDICT (2016)
 HV0981
 HV0981                         *CURRENT SURVEY CONTROL
 HV0981  ______________________________________________________________________
 HV0981* NAD 83(1986) POSITION- 38 33 03.     (N) 076 41 32.     (W)   SCALED
 HV0981* NAVD 88 ORTHO HEIGHT -    26.511 (meters)       86.98  (feet) ADJUSTED
 HV0981  ______________________________________________________________________
 HV0981  GEOID HEIGHT    -        -33.595 (meters)                     GEOID18
 HV0981  DYNAMIC HEIGHT  -         26.495 (meters)       86.93  (feet) COMP
 HV0981  MODELED GRAVITY -    980,034.5   (mgal)                       NAVD 88
 HV0981
 HV0981  VERT ORDER      -  FIRST     CLASS II
 HV0981
 HV0981.The horizontal coordinates were scaled from a map and have
 HV0981.an estimated accuracy of +/- 6 seconds.
 HV0981
 HV0981.The orthometric height was determined by differential leveling and
 HV0981.adjusted by the NATIONAL GEODETIC SURVEY
 HV0981.in June 1991.
 HV0981
 HV0981.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0981.GEOID18 height accuracy estimate available here.
 HV0981
 HV0981.Click photographs - Photos may exist for this station.
 HV0981
 HV0981.The dynamic height is computed by dividing the NAVD 88
 HV0981.geopotential number by the normal gravity value computed on the
 HV0981.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0981.degrees latitude (g = 980.6199 gals.).
 HV0981
 HV0981.The modeled gravity was interpolated from observed gravity values.
 HV0981
 HV0981;                    North         East    Units  Estimated Accuracy
 HV0981;SPC MD       -    98,190.      426,830.      MT  (+/- 180 meters Scaled)
 HV0981
 HV0981_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH525682(NAD 83)
 HV0981
 HV0981                          SUPERSEDED SURVEY CONTROL
 HV0981
 HV0981  NGVD 29 (11/26/84)   26.774  (m)           87.84   (f) ADJUSTED    1 2
 HV0981
 HV0981.Superseded values are not recommended for survey control.
 HV0981
 HV0981.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0981.See file dsdata.pdf to determine how the superseded data were derived.
 HV0981
 HV0981_MARKER: DB = BENCH MARK DISK
 HV0981_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV0981_STAMPING: J 100 1961
 HV0981_MARK LOGO: CGS
 HV0981_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0981+STABILITY: SURFACE MOTION
 HV0981
 HV0981  HISTORY     - Date     Condition        Report By
 HV0981  HISTORY     - 1961     MONUMENTED       CGS
 HV0981  HISTORY     - 1964     GOOD             CGS
 HV0981
 HV0981                          STATION DESCRIPTION
 HV0981
 HV0981'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 HV0981'2.8 MI SE FROM AQUASCO.
 HV0981'ABOUT 1.9 MILES SOUTHEAST ALONG EAGLE HARBOR ROAD FROM THE
 HV0981'JUNCTION OF STATE HIGHWAY 381 AT AQUASCO, THENCE 0.85 MILE SOUTH
 HV0981'ALONG ACCESS ROAD TO CHALK POINT, THENCE APPROXIMATELY 250 FEET
 HV0981'SOUTHWEST OF ACCESS ROAD, 200 FEET NORTHWEST OF SOUTHERN MARYLAND.
 HV0981'ELECTRIC CO-OP POWER POLE NO. 56, 2.6 FEET NORTHWEST OF METAL
 HV0981'MARKER IN TOP OF CONCRETE POST 5 INCHES ABOVE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1877 ***********************************************************************
 JU1877  DESIGNATION -  J 103
 JU1877  PID         -  JU1877
 JU1877  STATE/COUNTY-  MD/CECIL
 JU1877  COUNTRY     -  US
 JU1877  USGS QUAD   -  NORTH EAST (2016)
 JU1877
 JU1877                         *CURRENT SURVEY CONTROL
 JU1877  ______________________________________________________________________
 JU1877* NAD 83(1986) POSITION- 39 34 56.     (N) 075 58 15.     (W)   SCALED
 JU1877* NAVD 88 ORTHO HEIGHT -    17.586 (meters)       57.70  (feet) ADJUSTED
 JU1877  ______________________________________________________________________
 JU1877  GEOID HEIGHT    -        -33.191 (meters)                     GEOID18
 JU1877  DYNAMIC HEIGHT  -         17.577 (meters)       57.67  (feet) COMP
 JU1877  MODELED GRAVITY -    980,128.5   (mgal)                       NAVD 88
 JU1877
 JU1877  VERT ORDER      -  SECOND    CLASS 0
 JU1877
 JU1877.The horizontal coordinates were scaled from a map and have
 JU1877.an estimated accuracy of +/- 6 seconds.
 JU1877
 JU1877.The orthometric height was determined by differential leveling and
 JU1877.adjusted by the NATIONAL GEODETIC SURVEY
 JU1877.in June 1991.
 JU1877
 JU1877.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1877.GEOID18 height accuracy estimate available here.
 JU1877
 JU1877.Click photographs - Photos may exist for this station.
 JU1877
 JU1877.The dynamic height is computed by dividing the NAVD 88
 JU1877.geopotential number by the normal gravity value computed on the
 JU1877.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1877.degrees latitude (g = 980.6199 gals.).
 JU1877
 JU1877.The modeled gravity was interpolated from observed gravity values.
 JU1877
 JU1877;                    North         East    Units  Estimated Accuracy
 JU1877;SPC MD       -   213,140.      488,420.      MT  (+/- 180 meters Scaled)
 JU1877
 JU1877_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ166818(NAD 83)
 JU1877
 JU1877                          SUPERSEDED SURVEY CONTROL
 JU1877
 JU1877  NGVD 29 (11/26/84)   17.816  (m)           58.45   (f) ADJUSTED    2 0
 JU1877
 JU1877.Superseded values are not recommended for survey control.
 JU1877
 JU1877.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1877.See file dsdata.pdf to determine how the superseded data were derived.
 JU1877
 JU1877_MARKER: DB = BENCH MARK DISK
 JU1877_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JU1877_SP_SET: BRIDGE ABUTMENT
 JU1877_STAMPING: J 103 1961
 JU1877_MARK LOGO: CGS
 JU1877_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1877
 JU1877  HISTORY     - Date     Condition        Report By
 JU1877  HISTORY     - 1961     MONUMENTED       CGS
 JU1877  HISTORY     - 1964     GOOD             CGS
 JU1877  HISTORY     - 1983     MARK NOT FOUND   USPSQD
 JU1877
 JU1877                          STATION DESCRIPTION
 JU1877
 JU1877'DESCRIBED BY COAST AND GEODETIC SURVEY 1964
 JU1877'0.4 MI NE FROM CHARLESTOWN.
 JU1877'0.45 MILE NORTHEAST ON THE PENNSYLVANIA RAILROAD FROM THE STATION
 JU1877'AT CHARLESTOWN, IN THE NORTHEAST ABUTMENT OF THE HIGHWAY BRIDGE OVER
 JU1877'THE RAILROAD, 13 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY.
 JU1877'A STANDARD DISK SET IN A DRILL HOLE.
 JU1877
 JU1877                          STATION RECOVERY (1983)
 JU1877
 JU1877'RECOVERY NOTE BY US POWER SQUADRON 1983
 JU1877'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1878 ***********************************************************************
 JU1878  DESIGNATION -  J 103 RESET
 JU1878  PID         -  JU1878
 JU1878  STATE/COUNTY-  MD/CECIL
 JU1878  COUNTRY     -  US
 JU1878  USGS QUAD   -  NORTH EAST (2016)
 JU1878
 JU1878                         *CURRENT SURVEY CONTROL
 JU1878  ______________________________________________________________________
 JU1878* NAD 83(1986) POSITION- 39 34 56.     (N) 075 58 15.     (W)   SCALED
 JU1878* NAVD 88 ORTHO HEIGHT -    14.69  (meters)       48.2   (feet) RESET
 JU1878  ______________________________________________________________________
 JU1878  GEOID HEIGHT    -        -33.191 (meters)                     GEOID18
 JU1878  VERT ORDER      -  THIRD
 JU1878
 JU1878.The horizontal coordinates were scaled from a map and have
 JU1878.an estimated accuracy of +/- 6 seconds.
 JU1878
 JU1878.The orthometric height was computed from unverified reset data.
 JU1878
 JU1878.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1878.GEOID18 height accuracy estimate available here.
 JU1878
 JU1878.Click photographs - Photos may exist for this station.
 JU1878
 JU1878;                    North         East    Units  Estimated Accuracy
 JU1878;SPC MD       -   213,140.      488,420.      MT  (+/- 180 meters Scaled)
 JU1878
 JU1878_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ166818(NAD 83)
 JU1878
 JU1878                          SUPERSEDED SURVEY CONTROL
 JU1878
 JU1878  NGVD 29 (??/??/??)   14.92   (m)           49.0    (f) RESET       3  
 JU1878
 JU1878.Superseded values are not recommended for survey control.
 JU1878
 JU1878.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1878.See file dsdata.pdf to determine how the superseded data were derived.
 JU1878
 JU1878_MARKER: DV = VERTICAL CONTROL DISK
 JU1878_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JU1878_SP_SET: CONC PORCH OF CHURCH
 JU1878_STAMPING: J 103 RESET 1973
 JU1878_MARK LOGO: NGS
 JU1878_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1878
 JU1878  HISTORY     - Date     Condition        Report By
 JU1878  HISTORY     - 1973     MONUMENTED       NGS
 JU1878  HISTORY     - 1983     GOOD             USPSQD
 JU1878
 JU1878                          STATION DESCRIPTION
 JU1878
 JU1878'DESCRIBED BY NATIONAL GEODETIC SURVEY 1973
 JU1878'0.5 MI NE FROM CHARLESTOWN.
 JU1878'THE MARK IS LOCATED 0.45 MILE NORTH OF THE RAILROAD DEPOT IN
 JU1878'CHARLESTON.  ABOUT 200 FEET SOUTH OF THE INTERSECTION OF STATE
 JU1878'HIGHWAYS 7 AND 267, SET IN THE MOST EASTERLY PORCH FOUNDATION OF
 JU1878'THE CHARLESTON MISSIONARY BAPTIST CHURCH.  IT IS SET IN A DRILL HOLE
 JU1878'IN THE FLAT TOP OF THE CONCRETE PORCH, 8.5 FEET NORTHWEST OF THE
 JU1878'SOUTHEAST CORNER OF THE CHURCH AND 3.4 FEET SOUTHEAST OF THE MOST
 JU1878'EASTERLY ENTRANCE TO THE CHURCH.  THE DISK IS ABOUT 3 FEET LOWER
 JU1878'THAN THE ROAD.  BENCH MARK J 103 WAS NOT DESTROYED AT THIS DATE,
 JU1878'HOWEVER IT WILL BE DESTROYED IN THE FALL OF 1973.  THE STATE HIGHWAY
 JU1878'DEPARTMENT REQUESTED THE DISK BE LEFT INTACT AS LONG AS POSSIBLE.
 JU1878
 JU1878                          STATION RECOVERY (1983)
 JU1878
 JU1878'RECOVERY NOTE BY US POWER SQUADRON 1983
 JU1878'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0273 ***********************************************************************
 HU0273  DESIGNATION -  J 104
 HU0273  PID         -  HU0273
 HU0273  STATE/COUNTY-  MD/WORCESTER
 HU0273  COUNTRY     -  US
 HU0273  USGS QUAD   -  OCEAN CITY (2016)
 HU0273
 HU0273                         *CURRENT SURVEY CONTROL
 HU0273  ______________________________________________________________________
 HU0273* NAD 83(2011) POSITION- 38 18 33.16170(N) 075 07 08.73333(W)   ADJUSTED
 HU0273* NAD 83(2011) ELLIP HT-   -33.967 (meters)        (06/27/12)   ADJUSTED
 HU0273* NAD 83(2011) EPOCH   -  2010.00
 HU0273* NAVD 88 ORTHO HEIGHT -     2.115 (meters)        6.94  (feet) ADJUSTED
 HU0273  ______________________________________________________________________
 HU0273  GEOID HEIGHT    -        -36.079 (meters)                     GEOID18
 HU0273  NAD 83(2011) X  -  1,286,929.764 (meters)                     COMP
 HU0273  NAD 83(2011) Y  - -4,843,131.828 (meters)                     COMP
 HU0273  NAD 83(2011) Z  -  3,932,412.104 (meters)                     COMP
 HU0273  LAPLACE CORR    -         -0.54  (seconds)                    DEFLEC18
 HU0273  DYNAMIC HEIGHT  -          2.114 (meters)        6.94  (feet) COMP
 HU0273  MODELED GRAVITY -    980,005.5   (mgal)                       NAVD 88
 HU0273
 HU0273  VERT ORDER      -  SECOND    CLASS 0
 HU0273
 HU0273  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0273  Standards:
 HU0273         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0273            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0273  -------------------------------------------------------------------
 HU0273  NETWORK    0.92   0.57           0.19   0.46   0.29     -0.08746393
 HU0273  -------------------------------------------------------------------
 HU0273  Click here for local accuracies and other accuracy information.
 HU0273
 HU0273.This mark is at Ocean City Airport (OXB)
 HU0273
 HU0273.The horizontal coordinates were established by GPS observations
 HU0273.and adjusted by the National Geodetic Survey in June 2012.
 HU0273
 HU0273.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0273.been affixed to the stable North American tectonic plate. See 
 HU0273.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0273
 HU0273.The horizontal coordinates are valid at the epoch date displayed above
 HU0273.which is a decimal equivalence of Year/Month/Day.
 HU0273
 HU0273.The orthometric height was determined by differential leveling and
 HU0273.adjusted by the NATIONAL GEODETIC SURVEY
 HU0273.in June 1991.
 HU0273
 HU0273.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0273.GEOID18 height accuracy estimate available here.
 HU0273
 HU0273.Click photographs - Photos may exist for this station.
 HU0273
 HU0273.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0273
 HU0273.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0273
 HU0273.The ellipsoidal height was determined by GPS observations
 HU0273.and is referenced to NAD 83.
 HU0273
 HU0273.The dynamic height is computed by dividing the NAVD 88
 HU0273.geopotential number by the normal gravity value computed on the
 HU0273.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0273.degrees latitude (g = 980.6199 gals.).
 HU0273
 HU0273.The modeled gravity was interpolated from observed gravity values.
 HU0273
 HU0273. The following values were computed from the NAD 83(2011) position.
 HU0273
 HU0273;                    North         East     Units Scale Factor Converg.
 HU0273;SPC MD       -    73,020.065   564,496.747   MT  0.99999841   +1 10 49.9
 HU0273;SPC MD       -   239,566.66  1,852,019.74   sFT  0.99999841   +1 10 49.9
 HU0273;UTM  18      - 4,240,130.301   489,588.043   MT  0.99960134   -0 04 25.8
 HU0273
 HU0273!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0273!SPC MD       -   1.00000533  x   0.99999841  =   1.00000374
 HU0273!UTM  18      -   1.00000533  x   0.99960134  =   0.99960667
 HU0273
 HU0273_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH8958840130(NAD 83)
 HU0273
 HU0273|---------------------------------------------------------------------|
 HU0273| PID    Reference Object                     Distance      Geod. Az  |
 HU0273|                                                           dddmmss.s |
 HU0273| HU2569 OCEAN CITY AP                        10.767 METERS 34428     |
 HU0273|---------------------------------------------------------------------|
 HU0273
 HU0273                          SUPERSEDED SURVEY CONTROL
 HU0273
 HU0273  NAD 83(2007)-  38 18 33.16197(N)    075 07 08.73417(W) AD(2002.00) 0
 HU0273  ELLIP H (02/10/07)  -33.934  (m)                       GP(2002.00)    
 HU0273  ELLIP H (10/28/02)  -33.928  (m)                       GP(       ) 4 2
 HU0273  NAD 83(1991)-  38 18 33.16213(N)    075 07 08.73457(W) AD(       ) 1
 HU0273  ELLIP H (10/08/97)  -33.940  (m)                       GP(       ) 4 2
 HU0273  NAVD 88               2.12   (m)            7.0    (f) LEVELING    3  
 HU0273  NGVD 29 (11/26/84)    2.359  (m)            7.74   (f) ADJUSTED    2 0
 HU0273
 HU0273.Superseded values are not recommended for survey control.
 HU0273
 HU0273.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0273.See file dsdata.pdf to determine how the superseded data were derived.
 HU0273
 HU0273_MARKER: DB = BENCH MARK DISK
 HU0273_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0273_STAMPING: J 104 1962
 HU0273_MARK LOGO: CGS
 HU0273_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0273_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0273+STABILITY: SURFACE MOTION
 HU0273_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0273+SATELLITE: SATELLITE OBSERVATIONS - January 11, 2011
 HU0273
 HU0273  HISTORY     - Date     Condition        Report By
 HU0273  HISTORY     - 1962     MONUMENTED       CGS
 HU0273  HISTORY     - 1984     GOOD             MDDT
 HU0273  HISTORY     - 1988     GOOD             USPSQD
 HU0273  HISTORY     - 19960908 GOOD             NGS
 HU0273  HISTORY     - 20110111 GOOD             INDIV
 HU0273
 HU0273                          STATION DESCRIPTION
 HU0273
 HU0273'DESCRIBED BY COAST AND GEODETIC SURVEY 1962
 HU0273'1.5 MI SW FROM OCEAN CITY.
 HU0273'0.7 MILE SOUTHWEST ALONG STATE HIGHWAY 611 FROM THE CROSSING OF THE
 HU0273'BALTIMORE AND EASTERN RAILROAD IN WEST OCEAN CITY, THENCE 0.8 MILE
 HU0273'SOUTHEAST ALONG BLACK TOPPED ROAD LEADING TO THE OCEAN CITY
 HU0273'AIRPORT.  IN THE CONCRETE BASE OF THE WIND SOCK, 182 YARDS
 HU0273'SOUTHWEST OF THE OFFICE BUILDING, 3 FEET NORTH OF THE PIPE STAFF
 HU0273'FOR THE SOCK AND LEVEL WITH THE GROUND.
 HU0273
 HU0273                          STATION RECOVERY (1984)
 HU0273
 HU0273'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1984
 HU0273'THE WINDSOCK MENTIONED IN THE DESCRIPTION IS AN OLD WINDSOCK. THE
 HU0273'STATION IS 6.2 FT. NORTHEAST OF A NEW WINDSOCK AND 1.0 FT. NORTHWEST
 HU0273'OF A CARSONITE WITNESS POST.
 HU0273
 HU0273                          STATION RECOVERY (1988)
 HU0273
 HU0273'RECOVERY NOTE BY US POWER SQUADRON 1988 (RBD)
 HU0273'RECOVERED IN GOOD CONDITION.
 HU0273
 HU0273                          STATION RECOVERY (1996)
 HU0273
 HU0273'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL)
 HU0273'RECOVERED AS DESCRIBED WITH THE FOLLOWING ADDITIONS.  CONTACT DON
 HU0273'STUART, APT MNGR AT (410) 213-2471 FOR PERMISSION TO ACCESS MARK.
 HU0273
 HU0273                          STATION RECOVERY (2011)
 HU0273
 HU0273'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (RNH)
 HU0273'THE MARKER IS FOUND TO BE IN GOOD CONDITION BY THE TOWN OF OCEAN CITY
 HU0273'ENGINEERING DEPARTMENT. RECOVERED AS DESCRIBED WITH THE FOLLOWING
 HU0273'ADDITIONS.  CONTACT GEORGE GOODROW , APT MNGR AT (410) 213-2471 OR
 HU0273'GGOODROW AT OCEANCITYMD.GOV FOR PERMISSION OR APPOINTMENT TO ACCESS
 HU0273'MARK.
 HU0273'
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0475 ***********************************************************************
 HU0475  DESIGNATION -  J 105
 HU0475  PID         -  HU0475
 HU0475  STATE/COUNTY-  MD/SOMERSET
 HU0475  COUNTRY     -  US
 HU0475  USGS QUAD   -  EDEN (2016)
 HU0475
 HU0475                         *CURRENT SURVEY CONTROL
 HU0475  ______________________________________________________________________
 HU0475* NAD 83(2011) POSITION- 38 15 40.13431(N) 075 39 56.16055(W)   ADJUSTED
 HU0475* NAD 83(2011) ELLIP HT-   -30.035 (meters)        (01/22/24)   ADJUSTED
 HU0475* NAD 83(2011) EPOCH   -  2010.00
 HU0475* NAVD 88 ORTHO HEIGHT -     5.891 (meters)       19.33  (feet) ADJUSTED
 HU0475  ______________________________________________________________________
 HU0475  GEOID HEIGHT    -        -35.944 (meters)                     GEOID18
 HU0475  NAD 83(2011) X  -  1,241,495.544 (meters)                     COMP
 HU0475  NAD 83(2011) Y  - -4,858,392.089 (meters)                     COMP
 HU0475  NAD 83(2011) Z  -  3,928,226.845 (meters)                     COMP
 HU0475  LAPLACE CORR    -         -1.35  (seconds)                    DEFLEC18
 HU0475  DYNAMIC HEIGHT  -          5.887 (meters)       19.31  (feet) COMP
 HU0475  MODELED GRAVITY -    979,993.9   (mgal)                       NAVD 88
 HU0475
 HU0475  VERT ORDER      -  FIRST     CLASS I
 HU0475
 HU0475  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HU0475  Standards:
 HU0475         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HU0475            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HU0475  -------------------------------------------------------------------
 HU0475  NETWORK    0.43   1.20           0.18   0.17   0.61     -0.11482180
 HU0475  -------------------------------------------------------------------
 HU0475  Click here for local accuracies and other accuracy information.
 HU0475
 HU0475.The horizontal coordinates were established by GPS observations
 HU0475.and adjusted by the MD DOT HIGHWAY ADMIN in January 2024.
 HU0475
 HU0475.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HU0475.been affixed to the stable North American tectonic plate. See 
 HU0475.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HU0475
 HU0475.The horizontal coordinates are valid at the epoch date displayed above
 HU0475.which is a decimal equivalence of Year/Month/Day.
 HU0475
 HU0475.The orthometric height was determined by differential leveling and
 HU0475.adjusted by the NATIONAL GEODETIC SURVEY
 HU0475.in June 1991.
 HU0475
 HU0475.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0475.GEOID18 height accuracy estimate available here.
 HU0475
 HU0475.Click photographs - Photos may exist for this station.
 HU0475
 HU0475.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HU0475
 HU0475.The Laplace correction was computed from DEFLEC18 derived deflections.
 HU0475
 HU0475.The ellipsoidal height was determined by GPS observations
 HU0475.and is referenced to NAD 83.
 HU0475
 HU0475.The dynamic height is computed by dividing the NAVD 88
 HU0475.geopotential number by the normal gravity value computed on the
 HU0475.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0475.degrees latitude (g = 980.6199 gals.).
 HU0475
 HU0475.The modeled gravity was interpolated from observed gravity values.
 HU0475
 HU0475. The following values were computed from the NAD 83(2011) position.
 HU0475
 HU0475;                    North         East     Units Scale Factor Converg.
 HU0475;SPC MD       -    66,843.795   516,783.434   MT  1.00000699   +0 50 15.1
 HU0475;SPC MD       -   219,303.35  1,695,480.32   sFT  1.00000699   +0 50 15.1
 HU0475;UTM  18      - 4,235,000.078   441,769.616   MT  0.99964176   -0 24 43.9
 HU0475
 HU0475!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HU0475!SPC MD       -   1.00000471  x   1.00000699  =   1.00001170
 HU0475!UTM  18      -   1.00000471  x   0.99964176  =   0.99964647
 HU0475
 HU0475_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4176935000(NAD 83)
 HU0475
 HU0475                          SUPERSEDED SURVEY CONTROL
 HU0475
 HU0475  NGVD 29 (11/26/84)    6.148  (m)           20.17   (f) ADJUSTED    1 1
 HU0475
 HU0475.Superseded values are not recommended for survey control.
 HU0475
 HU0475.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0475.See file dsdata.pdf to determine how the superseded data were derived.
 HU0475
 HU0475_MARKER: DB = BENCH MARK DISK
 HU0475_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
 HU0475_SP_SET: BOX CULVERT HEADWALL
 HU0475_STAMPING: J 105 1963
 HU0475_MARK LOGO: CGS
 HU0475_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU0475_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0475+STABILITY: SURFACE MOTION
 HU0475_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HU0475+SATELLITE: SATELLITE OBSERVATIONS - January 22, 2020
 HU0475
 HU0475  HISTORY     - Date     Condition        Report By
 HU0475  HISTORY     - 1963     MONUMENTED       CGS
 HU0475  HISTORY     - 1972     GOOD             NGS
 HU0475  HISTORY     - 20010411 GOOD             MDSHA
 HU0475  HISTORY     - 20050516 GOOD             USPSQD
 HU0475  HISTORY     - 20200122 GOOD             MDSHA
 HU0475
 HU0475                          STATION DESCRIPTION
 HU0475
 HU0475'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0475'4.4 MI NE FROM PRINCESS ANNE.
 HU0475'ABOUT 4.35 MILES NORTHEAST ALONG SOMERSET AVENUE AND U.S. HIGHWAY
 HU0475'13 FROM THE JUNCTION OF STATE HIGHWAY 363 AT PRINCESS ANNE,
 HU0475'AT THE INTERSECTION OF AN EAST-WEST BLACKTOP ROAD, SET ON THE
 HU0475'TOP OF THE NORTHEAST END OF THE SOUTHEAST CONCRETE HEADWALL FOR A
 HU0475'CONCRETE BOX CULVERT OVER SOMERSET CREEK AND UNDER THE NORTHBOUND
 HU0475'LANE OF THE HIGHWAY, 127 FEET NORTH OF THE CENTER OF THE BLACKTOP
 HU0475'ROAD CROSSING THE PENN CENTRAL RAILROAD, 49 FEET NORTHWEST OF THE
 HU0475'NORTHWEST RAIL OF THE PENN CENTRAL TRACK, 26.0 FEET SOUTHEAST OF
 HU0475'THE CENTER LINE OF THE NORTHBOUND LANE OF THE HIGHWAY AND 1 FOOT
 HU0475'ABOVE THE LEVEL OF THE HIGHWAY.
 HU0475
 HU0475                          STATION RECOVERY (2001)
 HU0475
 HU0475'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2001 (SFK)
 HU0475'RECOVERED AS DESCRIBED.
 HU0475
 HU0475                          STATION RECOVERY (2005)
 HU0475
 HU0475'RECOVERY NOTE BY US POWER SQUADRON 2005 (KW)
 HU0475'RECOVERED IN GOOD CONDITION.
 HU0475
 HU0475                          STATION RECOVERY (2020)
 HU0475
 HU0475'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2020 (WAC)
 HU0475'SUITABLE FOR GPS WITH ROD AND BIPOD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0500 ***********************************************************************
 HU0500  DESIGNATION -  J 106
 HU0500  PID         -  HU0500
 HU0500  STATE/COUNTY-  MD/SOMERSET
 HU0500  COUNTRY     -  US
 HU0500  USGS QUAD   -  KINGSTON (2016)
 HU0500
 HU0500                         *CURRENT SURVEY CONTROL
 HU0500  ______________________________________________________________________
 HU0500* NAD 83(1986) POSITION- 38 06 49.20   (N) 075 37 41.54   (W)   HD_HELD1
 HU0500* NAVD 88 ORTHO HEIGHT -     6.034 (meters)       19.80  (feet) ADJUSTED
 HU0500  ______________________________________________________________________
 HU0500  GEOID HEIGHT    -        -36.177 (meters)                     GEOID18
 HU0500  DYNAMIC HEIGHT  -          6.030 (meters)       19.78  (feet) COMP
 HU0500  MODELED GRAVITY -    979,978.0   (mgal)                       NAVD 88
 HU0500
 HU0500  VERT ORDER      -  FIRST     CLASS I
 HU0500
 HU0500.The horizontal coordinates were determined by differentially corrected
 HU0500.hand held GPS observations or other comparable positioning techniques
 HU0500.and have an estimated accuracy of +/- 3 meters.
 HU0500
 HU0500.The orthometric height was determined by differential leveling and
 HU0500.adjusted by the NATIONAL GEODETIC SURVEY
 HU0500.in June 1991.
 HU0500
 HU0500.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0500.GEOID18 height accuracy estimate available here.
 HU0500
 HU0500.Click photographs - Photos may exist for this station.
 HU0500
 HU0500.The dynamic height is computed by dividing the NAVD 88
 HU0500.geopotential number by the normal gravity value computed on the
 HU0500.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0500.degrees latitude (g = 980.6199 gals.).
 HU0500
 HU0500.The modeled gravity was interpolated from observed gravity values.
 HU0500
 HU0500;                    North         East    Units  Estimated Accuracy
 HU0500;SPC MD       -    50,523.3     520,301.9     MT  (+/- 3 meters HH1 GPS) 
 HU0500
 HU0500_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4493018613(NAD 83)
 HU0500
 HU0500                          SUPERSEDED SURVEY CONTROL
 HU0500
 HU0500  NGVD 29 (11/26/84)    6.287  (m)           20.63   (f) ADJUSTED    1 1
 HU0500
 HU0500.Superseded values are not recommended for survey control.
 HU0500
 HU0500.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0500.See file dsdata.pdf to determine how the superseded data were derived.
 HU0500
 HU0500_MARKER: DB = BENCH MARK DISK
 HU0500_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU0500_STAMPING: J 106 1963
 HU0500_MARK LOGO: CGS
 HU0500_PROJECTION: PROJECTING 5 CENTIMETERS
 HU0500_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0500+STABILITY: SURFACE MOTION
 HU0500
 HU0500  HISTORY     - Date     Condition        Report By
 HU0500  HISTORY     - 1963     MONUMENTED       CGS
 HU0500  HISTORY     - 1972     GOOD             NGS
 HU0500
 HU0500                          STATION DESCRIPTION
 HU0500
 HU0500'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HU0500'4.2 MI NW FROM POCOMOKE CITY.
 HU0500'ABOUT 4.25 MILES NORTH ALONG THE PENN CENTRAL RAILROAD FROM THE
 HU0500'CROSSING OF CLARKE AVENUE AT POCOMOKE CITY, 0.95 MILE NORTHWEST
 HU0500'OF THE CROSSING OF A BLACK TOP ROAD, 0.4 MILE SOUTHEAST OF
 HU0500'MILEPOST 26, 60 FEET SOUTHWEST OF POWER LINE POLE NO. K 80, 38
 HU0500'1/2 FEET NORTHEAST OF THE NORTHEAST RAIL, 1.5 FEET NORTHWEST OF A
 HU0500'METAL WITNESS POST, 1/2 FOOT BELOW THE LEVEL OF THE TRACK AND SET
 HU0500'IN THE TOP OF A CONCRETE POST PROJECTING 2 INCHES ABOVE THE LEVEL
 HU0500'OF THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU2664 ***********************************************************************
 HU2664  DESIGNATION -  J 107 RESET
 HU2664  PID         -  HU2664
 HU2664  STATE/COUNTY-  MD/WICOMICO
 HU2664  COUNTRY     -  US
 HU2664  USGS QUAD   -  DELMAR (2016)
 HU2664
 HU2664                         *CURRENT SURVEY CONTROL
 HU2664  ______________________________________________________________________
 HU2664* NAD 83(1986) POSITION- 38 23 06.7    (N) 075 34 48.7    (W)   HD_HELD2
 HU2664* NAVD 88 ORTHO HEIGHT -    10.112 (meters)       33.18  (feet) ADJUSTED
 HU2664  ______________________________________________________________________
 HU2664  GEOID HEIGHT    -        -35.802 (meters)                     GEOID18
 HU2664  DYNAMIC HEIGHT  -         10.106 (meters)       33.16  (feet) COMP
 HU2664  MODELED GRAVITY -    980,007.3   (mgal)                       NAVD 88
 HU2664
 HU2664  VERT ORDER      -  SECOND    CLASS I
 HU2664
 HU2664.The horizontal coordinates were established by autonomous hand held GPS
 HU2664.observations and have an estimated accuracy of +/- 10 meters.
 HU2664
 HU2664.The orthometric height was determined by differential leveling and
 HU2664.adjusted by the NATIONAL GEODETIC SURVEY
 HU2664.in December 2004.
 HU2664
 HU2664.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU2664.GEOID18 height accuracy estimate available here.
 HU2664
 HU2664.Click photographs - Photos may exist for this station.
 HU2664
 HU2664.The dynamic height is computed by dividing the NAVD 88
 HU2664.geopotential number by the normal gravity value computed on the
 HU2664.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU2664.degrees latitude (g = 980.6199 gals.).
 HU2664
 HU2664.The modeled gravity was interpolated from observed gravity values.
 HU2664
 HU2664;                    North         East    Units  Estimated Accuracy
 HU2664;SPC MD       -    80,724.      524,043.      MT  (+/- 10 meters HH2 GPS)
 HU2664
 HU2664_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4932748713(NAD 83)
 HU2664
 HU2664                          SUPERSEDED SURVEY CONTROL
 HU2664
 HU2664  NAVD 88 (11/18/05)   10.112  (m)           33.18   (f) SUPERSEDED  3 0
 HU2664  NGVD 29 (11/18/05)   10.37   (m)           34.0    (f) RESET       3  
 HU2664
 HU2664.Superseded values are not recommended for survey control.
 HU2664
 HU2664.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU2664.See file dsdata.pdf to determine how the superseded data were derived.
 HU2664
 HU2664_MARKER: DV = VERTICAL CONTROL DISK
 HU2664_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HU2664_STAMPING: J 107 RESET 1984
 HU2664_MARK LOGO: NGS
 HU2664_PROJECTION: FLUSH
 HU2664_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HU2664_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU2664+STABILITY: SURFACE MOTION
 HU2664
 HU2664  HISTORY     - Date     Condition        Report By
 HU2664  HISTORY     - 1984     MONUMENTED       NGS
 HU2664  HISTORY     - 20020220 GOOD             MDSHA
 HU2664
 HU2664                          STATION DESCRIPTION
 HU2664
 HU2664'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984
 HU2664'IN SALISBURY.
 HU2664'FROM THE INTERSECTION OF U.S. HIGHWAYS 13 AND 50 BUSINESS IN
 HU2664'SALISBURY, GO NORTH ON U.S. HIGHWAY 13 FOR 2.43 KM (1.50 MI) TO A
 HU2664'ROAD ON THE RIGHT LEADING TO A MAST, TURN RIGHT AND GO EAST ON
 HU2664'PRIVATE DRIVE FOR 0.1 KM (0.05 MI) TO THE MARK ON THE LEFT, 8.2 M
 HU2664'(26.9 FT) WEST FROM THE SOUTHEAST CORNER OF THE SOUTH WING OF A BRICK
 HU2664'BUILDING, 1.0 M (3.3 FT) SOUTH FROM THE SOUTH FACE OF THE BUILDING,
 HU2664'22.3 M (73.2 FT) EAST FROM THE SOUTHWEST CORNER OF THE BUILDING, 23.1
 HU2664'M (75.8 FT) NORTHEAST FROM THE NORTHEAST CORNER OF A CONCRETE BLOCK
 HU2664'BUILDING, 21.0 M (68.9 FT) NORTHEAST FROM A DROP INLET AND JUST NORTH
 HU2664'FROM A BLADED ROAD.
 HU2664'THE MARK IS 0.98 METERS  S FROM  A WITNESS POST
 HU2664'THE MARK IS 0.05 M ABOVE ROAD.
 HU2664
 HU2664                          STATION RECOVERY (2002)
 HU2664
 HU2664'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 HU2664'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DG6822 ***********************************************************************
 DG6822  DESIGNATION -  J 107 X RESET
 DG6822  PID         -  DG6822
 DG6822  STATE/COUNTY-  MD/WICOMICO
 DG6822  COUNTRY     -  US
 DG6822  USGS QUAD   -  DELMAR (2016)
 DG6822
 DG6822                         *CURRENT SURVEY CONTROL
 DG6822  ______________________________________________________________________
 DG6822* NAD 83(1986) POSITION- 38 23 34.0    (N) 075 34 26.9    (W)   HD_HELD2
 DG6822* NAVD 88 ORTHO HEIGHT -    11.749 (meters)       38.55  (feet) ADJUSTED
 DG6822  ______________________________________________________________________
 DG6822  GEOID HEIGHT    -        -35.796 (meters)                     GEOID18
 DG6822  DYNAMIC HEIGHT  -         11.742 (meters)       38.52  (feet) COMP
 DG6822  MODELED GRAVITY -    980,007.9   (mgal)                       NAVD 88
 DG6822
 DG6822  VERT ORDER      -  SECOND    CLASS I
 DG6822
 DG6822.The horizontal coordinates were established by autonomous hand held GPS
 DG6822.observations and have an estimated accuracy of +/- 10 meters.
 DG6822
 DG6822.The orthometric height was determined by differential leveling and
 DG6822.adjusted by the NATIONAL GEODETIC SURVEY
 DG6822.in December 2004.
 DG6822
 DG6822.Significant digits in the geoid height do not necessarily reflect accuracy.
 DG6822.GEOID18 height accuracy estimate available here.
 DG6822
 DG6822.Click photographs - Photos may exist for this station.
 DG6822
 DG6822.The dynamic height is computed by dividing the NAVD 88
 DG6822.geopotential number by the normal gravity value computed on the
 DG6822.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 DG6822.degrees latitude (g = 980.6199 gals.).
 DG6822
 DG6822.The modeled gravity was interpolated from observed gravity values.
 DG6822
 DG6822;                    North         East    Units  Estimated Accuracy
 DG6822;SPC MD       -    81,574.      524,559.      MT  (+/- 10 meters HH2 GPS)
 DG6822
 DG6822_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH4986149552(NAD 83)
 DG6822
 DG6822                          SUPERSEDED SURVEY CONTROL
 DG6822
 DG6822.No superseded survey control is available for this station.
 DG6822
 DG6822_MARKER: DD = SURVEY DISK
 DG6822_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DG6822_STAMPING: J 107 X RESET 2002
 DG6822_MARK LOGO: MDSHA
 DG6822_MAGNETIC: O = OTHER; SEE DESCRIPTION
 DG6822_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DG6822+STABILITY: SURFACE MOTION
 DG6822_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DG6822+SATELLITE: SATELLITE OBSERVATIONS - 2002
 DG6822
 DG6822  HISTORY     - Date     Condition        Report By
 DG6822  HISTORY     - 2002     MONUMENTED       MDSHA
 DG6822
 DG6822                          STATION DESCRIPTION
 DG6822
 DG6822'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 DG6822'THE STATION IS LOCATED ABOUT 2.0 MI (2.09 KM) NORTHEAST OF SALISBURY.
 DG6822'TO REACH THE STATION FROM THE U.S HIGHWAY 13 (BUSINESS) BRIDGE OVER
 DG6822'U.S.HIGHWAY 50, GO NORTHEAST ALONG U.S.HIGHWAY 13 FOR 2.0 MI (2.09 KM)
 DG6822'TO ZION ROAD AND THE STATION ON THE RIGHT.  THE STATION IS A MARYLAND
 DG6822'STATE SURVEY DISK SET IN THE TOP OF A 12 INCH (30 CM) ROUND CONCRETE
 DG6822'MONUMENT WHICH IS FLUSH WITH THE GROUND. IT IS 94.8 FT (0.0 M)
 DG6822'SOUTHEAST OF THE CENTER LINE OF THE NORTHBOUND LANES OF THE HIGHWAY,
 DG6822'48.2 FT (0.0 M) NORTHEAST OF THE CENTER LINE OF ZION ROAD, 52.5 FT
 DG6822'(0.0 M) SOUTH-SOUTHEAST OF POWER POLE NUMBER 47579-94140, 32.6 FT (9.9
 DG6822'M) NORTHWEST OF THE SOUTHEAST CORNER OF A WHITE WOODEN FENCE, 2.0 FT
 DG6822'(0.0 M) SOUTHWEST OF A CARSONITE WITNESS POST AND ABOUT 3 FT (0.9 M)
 DG6822'HIGHER THAN THE LEVEL OF THE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1840 ***********************************************************************
 JU1840  DESIGNATION -  J 108
 JU1840  PID         -  JU1840
 JU1840  STATE/COUNTY-  MD/CECIL
 JU1840  COUNTRY     -  US
 JU1840  USGS QUAD   -  ELKTON (2016)
 JU1840
 JU1840                         *CURRENT SURVEY CONTROL
 JU1840  ______________________________________________________________________
 JU1840* NAD 83(1986) POSITION- 39 30 04.3    (N) 075 51 21.7    (W)   HD_HELD2
 JU1840* NAVD 88 ORTHO HEIGHT -    21.880 (meters)       71.78  (feet) ADJUSTED
 JU1840  ______________________________________________________________________
 JU1840  GEOID HEIGHT    -        -33.353 (meters)                     GEOID18
 JU1840  DYNAMIC HEIGHT  -         21.869 (meters)       71.75  (feet) COMP
 JU1840  MODELED GRAVITY -    980,123.1   (mgal)                       NAVD 88
 JU1840
 JU1840  VERT ORDER      -  FIRST     CLASS I
 JU1840
 JU1840.The horizontal coordinates were established by autonomous hand held GPS
 JU1840.observations and have an estimated accuracy of +/- 10 meters.
 JU1840
 JU1840.The orthometric height was determined by differential leveling and
 JU1840.adjusted by the NATIONAL GEODETIC SURVEY
 JU1840.in June 1991.
 JU1840
 JU1840.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1840.GEOID18 height accuracy estimate available here.
 JU1840
 JU1840.Click photographs - Photos may exist for this station.
 JU1840
 JU1840.The dynamic height is computed by dividing the NAVD 88
 JU1840.geopotential number by the normal gravity value computed on the
 JU1840.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1840.degrees latitude (g = 980.6199 gals.).
 JU1840
 JU1840.The modeled gravity was interpolated from observed gravity values.
 JU1840
 JU1840;                    North         East    Units  Estimated Accuracy
 JU1840;SPC MD       -   204,264.      498,394.      MT  (+/- 10 meters HH2 GPS)
 JU1840
 JU1840_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2640072746(NAD 83)
 JU1840
 JU1840                          SUPERSEDED SURVEY CONTROL
 JU1840
 JU1840  NGVD 29 (11/26/84)   22.118  (m)           72.57   (f) ADJUSTED    1 1
 JU1840
 JU1840.Superseded values are not recommended for survey control.
 JU1840
 JU1840.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1840.See file dsdata.pdf to determine how the superseded data were derived.
 JU1840
 JU1840_MARKER: DB = BENCH MARK DISK
 JU1840_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JU1840_STAMPING: J 108 1963
 JU1840_MARK LOGO: CGS
 JU1840_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1840+STABILITY: SURFACE MOTION
 JU1840_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JU1840+SATELLITE: SATELLITE OBSERVATIONS - October 12, 2004
 JU1840
 JU1840  HISTORY     - Date     Condition        Report By
 JU1840  HISTORY     - 1963     MONUMENTED       CGS
 JU1840  HISTORY     - 1971     GOOD             NGS
 JU1840  HISTORY     - 20041012 GOOD             GEOCAC
 JU1840
 JU1840                          STATION DESCRIPTION
 JU1840
 JU1840'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1840'2.9 MI SW FROM CHESAPEAKE CITY.
 JU1840'ABOUT 1.7 MILES SOUTHWEST ALONG U.S. HIGHWAY 213 FROM THE
 JU1840'SOUTHWEST END OF THE HIGHWAY BRIDGE OVER THE CHESAPEAKE AND
 JU1840'DELAWARE CANAL AT CHESAPEAKE CITY, THENCE 1.2 MILES WEST ALONG
 JU1840'COURT HOUSE POINT ROAD, 148 YARDS EAST OF THE JUNCTION OF A
 JU1840'PAVED ROAD WHICH LEADS SOUTH, 19 FEET NORTH OF THE CENTER LINE
 JU1840'OF THE ROAD, 51 1/2 FEET EAST OF A 24-INCH OAK TREE, 2 1/2 FEET
 JU1840'WEST OF POWER POLE NUMBER 13256, 1.5 FEET EAST OF A METAL
 JU1840'WITNESS POST, ABOUT LEVEL WITH THE ROAD, AND SET IN THE TOP OF A
 JU1840'CONCRETE POST PROJECTING 3 INCHES.
 JU1840
 JU1840                          STATION RECOVERY (2004)
 JU1840
 JU1840'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 JU1840'THE UTILITY POLE IS NOW NUMBERED 39880 34555 AND THE WITNESS POST IS
 JU1840'NOW AN ORANGE CARSONITE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1335 ***********************************************************************
 JV1335  DESIGNATION -  J 109
 JV1335  PID         -  JV1335
 JV1335  STATE/COUNTY-  MD/HOWARD
 JV1335  COUNTRY     -  US
 JV1335  USGS QUAD   -  SAVAGE (2016)
 JV1335
 JV1335                         *CURRENT SURVEY CONTROL
 JV1335  ______________________________________________________________________
 JV1335* NAD 83(2011) POSITION- 39 11 50.45229(N) 076 47 39.07118(W)   ADJUSTED
 JV1335* NAD 83(2011) ELLIP HT-    73.752 (meters)        (06/27/12)   ADJUSTED
 JV1335* NAD 83(2011) EPOCH   -  2010.00
 JV1335* NAVD 88 ORTHO HEIGHT -   106.084 (meters)      348.04  (feet) ADJUSTED
 JV1335  ______________________________________________________________________
 JV1335  GEOID HEIGHT    -        -32.315 (meters)                     GEOID18
 JV1335  NAD 83(2011) X  -  1,130,726.958 (meters)                     COMP
 JV1335  NAD 83(2011) Y  - -4,818,679.688 (meters)                     COMP
 JV1335  NAD 83(2011) Z  -  4,009,366.376 (meters)                     COMP
 JV1335  LAPLACE CORR    -         -4.74  (seconds)                    DEFLEC18
 JV1335  DYNAMIC HEIGHT  -        106.027 (meters)      347.86  (feet) COMP
 JV1335  MODELED GRAVITY -    980,089.2   (mgal)                       NAVD 88
 JV1335
 JV1335  VERT ORDER      -  SECOND    CLASS I
 JV1335
 JV1335  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV1335  Standards:
 JV1335         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV1335            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV1335  -------------------------------------------------------------------
 JV1335  NETWORK    1.00   1.23           0.46   0.34   0.63     -0.08229917
 JV1335  -------------------------------------------------------------------
 JV1335  Click here for local accuracies and other accuracy information.
 JV1335
 JV1335.The horizontal coordinates were established by GPS observations
 JV1335.and adjusted by the National Geodetic Survey in June 2012.
 JV1335
 JV1335.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV1335.been affixed to the stable North American tectonic plate. See 
 JV1335.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV1335
 JV1335.The horizontal coordinates are valid at the epoch date displayed above
 JV1335.which is a decimal equivalence of Year/Month/Day.
 JV1335
 JV1335.The orthometric height was determined by differential leveling and
 JV1335.adjusted by the NATIONAL GEODETIC SURVEY
 JV1335.in June 1991.
 JV1335
 JV1335.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1335.GEOID18 height accuracy estimate available here.
 JV1335
 JV1335.Click photographs - Photos may exist for this station.
 JV1335
 JV1335.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV1335
 JV1335.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV1335
 JV1335.The ellipsoidal height was determined by GPS observations
 JV1335.and is referenced to NAD 83.
 JV1335
 JV1335.The dynamic height is computed by dividing the NAVD 88
 JV1335.geopotential number by the normal gravity value computed on the
 JV1335.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1335.degrees latitude (g = 980.6199 gals.).
 JV1335
 JV1335.The modeled gravity was interpolated from observed gravity values.
 JV1335
 JV1335. The following values were computed from the NAD 83(2011) position.
 JV1335
 JV1335;                    North         East     Units Scale Factor Converg.
 JV1335;SPC MD       -   169,934.366   417,778.628   MT  0.99996556   +0 07 45.0
 JV1335;SPC MD       -   557,526.33  1,370,662.05   sFT  0.99996556   +0 07 45.0
 JV1335;UTM  18      - 4,340,210.254   345,065.600   MT  0.99989557   -1 08 02.9
 JV1335
 JV1335!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV1335!SPC MD       -   0.99998843  x   0.99996556  =   0.99995399
 JV1335!UTM  18      -   0.99998843  x   0.99989557  =   0.99988400
 JV1335
 JV1335_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ4506540210(NAD 83)
 JV1335
 JV1335                          SUPERSEDED SURVEY CONTROL
 JV1335
 JV1335  NAD 83(2007)-  39 11 50.45259(N)    076 47 39.07226(W) AD(2002.00) 0
 JV1335  ELLIP H (02/10/07)   73.775  (m)                       GP(2002.00)    
 JV1335  ELLIP H (08/30/02)   73.770  (m)                       GP(       ) 4 2
 JV1335  NAD 83(1991)-  39 11 50.45242(N)    076 47 39.07196(W) AD(       ) 1
 JV1335  ELLIP H (11/16/00)   73.707  (m)                       GP(       ) 4 1
 JV1335  NAVD 88             106.08   (m)          348.0    (f) LEVELING    3  
 JV1335  NGVD 29 (11/26/84)  106.300  (m)          348.75   (f) ADJUSTED    2 0
 JV1335
 JV1335.Superseded values are not recommended for survey control.
 JV1335
 JV1335.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1335.See file dsdata.pdf to determine how the superseded data were derived.
 JV1335
 JV1335_MARKER: DB = BENCH MARK DISK
 JV1335_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1335_STAMPING: J 109 1965 U.S.C.G.S.
 JV1335_MARK LOGO: MDBCSM
 JV1335_PROJECTION: FLUSH
 JV1335_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV1335_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1335+STABILITY: SURFACE MOTION
 JV1335_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV1335+SATELLITE: SATELLITE OBSERVATIONS - June 08, 2017
 JV1335
 JV1335  HISTORY     - Date     Condition        Report By
 JV1335  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1335  HISTORY     - 20000915 GOOD             MD-027
 JV1335  HISTORY     - 20040325 GOOD             URS
 JV1335  HISTORY     - 20070414 GOOD             GEOCAC
 JV1335  HISTORY     - 20070525 GOOD             MDSHA
 JV1335  HISTORY     - 20091104 GOOD             MDSHA
 JV1335  HISTORY     - 20100928 GOOD             GPSSS
 JV1335  HISTORY     - 20170608 GOOD             NGS
 JV1335
 JV1335                          STATION DESCRIPTION
 JV1335
 JV1335'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1335'1.9 MI SE FROM JONESTOWN.
 JV1335'ABOUT 1.9 MILES SOUTH ALONG STATE HIGHWAY 175 FROM THE
 JV1335'INTERSECTION OF STATE HIGHWAY 108 AT JONESTOWN, 44.0 FT. EAST
 JV1335'OF THE CENTERLINE OF THE HIGHWAY, 103 FT. NORTH OF THE CENTERLINE
 JV1335'OF A ROAD LEADING EAST (MAYFIELD AVE.), 5.0 FT. WEST OF POWER
 JV1335'POLE NUMBER 254657, 3.0 FT. EAST OF A METAL WITNESS POST.  SET
 JV1335'IN A CONCRETE POST PROJECTING 3 INCHES.
 JV1335
 JV1335                          STATION RECOVERY (2000)
 JV1335
 JV1335'RECOVERY NOTE BY HOWARD COUNTY MARYLAND 2000 (RFM)
 JV1335'NEW DESCRIPTION BY HOWARD COUNTY 2000   RECOVERED IN GOOD
 JV1335'CONDITION IN THE VILLAGE OF LONG REACH AT THE  NORTH EAST CORNER
 JV1335'OF  ESTATE HIGHWAY 108 AND MAYFIELD AVENUE.   TO REACH THE STATION
 JV1335'FROM THE INTERSECTION  OF ,MARYLAND ROUTE  175  AND MARYLAND
 JV1335'ROUTE 108 GO ONE MILE NORTH ALONG ROUTE 108 TO THE STATION AT THE
 JV1335'CORNER WITH MAYFIELD AVENUE.   THE STATION IS ABOUT 103 FEET
 JV1335'NORTH  OF THE CENTERLINE OF MAYFIELD  AVENUE AND 5.3 FEET TO POLE
 JV1335'G AND E  254657
 JV1335'
 JV1335
 JV1335                          STATION RECOVERY (2004)
 JV1335
 JV1335'RECOVERY NOTE BY URS COMPANY 2004
 JV1335'RECOVERED IN GOOD CONDITION.
 JV1335
 JV1335                          STATION RECOVERY (2007)
 JV1335
 JV1335'RECOVERY NOTE BY GEOCACHING 2007 (EK)
 JV1335'RECOVERED IN GOOD CONDITION.
 JV1335
 JV1335                          STATION RECOVERY (2007)
 JV1335
 JV1335'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2007 (MRA)
 JV1335'THE STATION IS LOCATED ABOUT 3.5 MI (5.6 KM) NORTH-NORTHWEST OF
 JV1335'JESSUP, 1.9 MI (3.1 KM) SOUTH-SOUTHEAST OF JONESTOWN AND 1.8 MI (2.9
 JV1335'KM) NORTH-NORTHWEST OF WATERLOO.
 JV1335'
 JV1335'TO REACH FROM THE INTERSECTION OF STATE HIGHWAY 175 AND INTERSTATE
 JV1335'HIGHWAY 95, GO NORTHWEST ON STATE HIGHWAY 175 FOR 0.65 MI (1.0 KM) TO
 JV1335'A SIDE ROAD ON THE RIGHT.  TURN RIGHT AND GO NORTH ON STATE HIGHWAY
 JV1335'108 FOR 0.9 MI (1.4 KM) TO THE STATION ON THE RIGHT.
 JV1335'
 JV1335'IT IS 44 FT (13.4 M) EAST OF THE CENTERLINE OF THE HIGHWAY, 103 FT
 JV1335'(31.4 M) NORTH OF THE CENTERLINE OF MAYFIELD ROAD LEADING EAST, 5 FT
 JV1335'(1.5 M) WEST OF POWER POLE NUMBER 254657, 3 FT (0.9 M) EAST OF A METAL
 JV1335'WITNESS POST AND SET IN A 12-INCH (30 CM) ROUND CONCRETE POST.
 JV1335
 JV1335                          STATION RECOVERY (2009)
 JV1335
 JV1335'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2009 (GDB)
 JV1335'SOME PLANNING MAY BE REQUIRED FOR USE AS GPS CONTROL DUE TO
 JV1335'OBSTRUCTIONS.
 JV1335
 JV1335                          STATION RECOVERY (2010)
 JV1335
 JV1335'RECOVERY NOTE BY GPS SALES AND SERVICES 2010 (DL)
 JV1335'RECOVERED BY DEWEY LILLY OF NORTHERN BAY SURVEYS
 JV1335
 JV1335                          STATION RECOVERY (2017)
 JV1335
 JV1335'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2017 (LHB)
 JV1335'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV2800 ***********************************************************************
 JV2800  DESIGNATION -  J 11
 JV2800  PID         -  JV2800
 JV2800  STATE/COUNTY-  MD/MONTGOMERY
 JV2800  COUNTRY     -  US
 JV2800  USGS QUAD   -  KENSINGTON (2016)
 JV2800
 JV2800                         *CURRENT SURVEY CONTROL
 JV2800  ______________________________________________________________________
 JV2800* NAD 83(1986) POSITION- 39 00 08.     (N) 077 06 07.     (W)   SCALED
 JV2800* NAVD 88 ORTHO HEIGHT -    95.543 (meters)      313.46  (feet) ADJUSTED
 JV2800  ______________________________________________________________________
 JV2800  GEOID HEIGHT    -        -31.852 (meters)                     GEOID18
 JV2800  DYNAMIC HEIGHT  -         95.492 (meters)      313.29  (feet) COMP
 JV2800  MODELED GRAVITY -    980,091.0   (mgal)                       NAVD 88
 JV2800
 JV2800  VERT ORDER      -  FIRST     CLASS II
 JV2800
 JV2800.The horizontal coordinates were scaled from a map and have
 JV2800.an estimated accuracy of +/- 6 seconds.
 JV2800
 JV2800.The orthometric height was determined by differential leveling and
 JV2800.adjusted by the NATIONAL GEODETIC SURVEY
 JV2800.in June 1991.
 JV2800
 JV2800.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV2800.GEOID18 height accuracy estimate available here.
 JV2800
 JV2800.Click photographs - Photos may exist for this station.
 JV2800
 JV2800.The dynamic height is computed by dividing the NAVD 88
 JV2800.geopotential number by the normal gravity value computed on the
 JV2800.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV2800.degrees latitude (g = 980.6199 gals.).
 JV2800
 JV2800.The modeled gravity was interpolated from observed gravity values.
 JV2800
 JV2800;                    North         East    Units  Estimated Accuracy
 JV2800;SPC MD       -   148,260.      391,170.      MT  (+/- 180 meters Scaled)
 JV2800
 JV2800_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ179191(NAD 83)
 JV2800
 JV2800                          SUPERSEDED SURVEY CONTROL
 JV2800
 JV2800  NGVD 29 (11/26/84)   95.756  (m)          314.16   (f) ADJUSTED    1 2
 JV2800
 JV2800.Superseded values are not recommended for survey control.
 JV2800
 JV2800.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV2800.See file dsdata.pdf to determine how the superseded data were derived.
 JV2800
 JV2800_MARKER: DB = BENCH MARK DISK
 JV2800_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV2800_SP_SET: BUILDING
 JV2800_STAMPING: J 11 1957
 JV2800_MARK LOGO: CGS
 JV2800_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV2800_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV2800+SATELLITE: SATELLITE OBSERVATIONS - April 16, 2013
 JV2800
 JV2800  HISTORY     - Date     Condition        Report By
 JV2800  HISTORY     - 1957     MONUMENTED       CGS
 JV2800  HISTORY     - 1958     GOOD             CGS
 JV2800  HISTORY     - 1979     GOOD             NGS
 JV2800  HISTORY     - 20030925 GOOD             URS
 JV2800  HISTORY     - 20130416 GOOD             GEOMET
 JV2800
 JV2800                          STATION DESCRIPTION
 JV2800
 JV2800'DESCRIBED BY COAST AND GEODETIC SURVEY 1958
 JV2800'IN BETHESDA.
 JV2800'SET IN BUILDING 1 PORCH FLOOR, 2.5 FEET SOUTH OF THIRD COLUMN
 JV2800'FROM SOUTH, 23.4 FEET NORTH FROM SOUTH EDGE OF PORCH, 43.3 FEET
 JV2800'SOUTH FROM NORTH EDGE OF PORCH, AND 12.9 FEET EAST FROM EXTERIOR
 JV2800'BUILDING WALL ON THE GROUNDS OF THE NATIONAL INSTITUTES OF
 JV2800'HEALTH.
 JV2800
 JV2800                          STATION RECOVERY (1979)
 JV2800
 JV2800'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV2800'SET IN BUILDING NO. 1 PORCH FLOOR, 2.5 FEET SOUTH OF THIRD COLUMN
 JV2800'FROM SOUTH 23.4 FEET NORTH FROM SOUTH EDGE OF PORCH, 43.3 FEET SOUTH
 JV2800'FROM NORTH EDGE OF PORCH, AND 12.9 FEET EAST FROM EXTERIOR BUILDING
 JV2800'WALL ON THE GROUNDS OF THE NATIONAL INSTITUTES OF HEALTH. NOTE-- AS
 JV2800'YOU FACE BUILDING, MARK IS SEVERAL INCHES TO THE LEFT OF THE THIRD
 JV2800'COLUMN FROM THE LEFT.
 JV2800
 JV2800                          STATION RECOVERY (2003)
 JV2800
 JV2800'RECOVERY NOTE BY URS COMPANY 2003
 JV2800'RECOVERED IN GOOD CONDITION.
 JV2800
 JV2800                          STATION RECOVERY (2013)
 JV2800
 JV2800'RECOVERY NOTE BY GEOMETRICS GPS INCORPORATED 2013 (DWB)
 JV2800'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1317 ***********************************************************************
 JV1317  DESIGNATION -  J 110 MDSRC
 JV1317  PID         -  JV1317
 JV1317  STATE/COUNTY-  MD/C OF BALTIMORE
 JV1317  COUNTRY     -  US
 JV1317  USGS QUAD   -  BALTIMORE EAST (2016)
 JV1317
 JV1317                         *CURRENT SURVEY CONTROL
 JV1317  ______________________________________________________________________
 JV1317* NAD 83(1986) POSITION- 39 16 37.     (N) 076 33 16.     (W)   SCALED
 JV1317* NAVD 88 ORTHO HEIGHT -    10.910 (meters)       35.79  (feet) ADJUSTED
 JV1317  ______________________________________________________________________
 JV1317  GEOID HEIGHT    -        -32.885 (meters)                     GEOID18
 JV1317  DYNAMIC HEIGHT  -         10.904 (meters)       35.77  (feet) COMP
 JV1317  MODELED GRAVITY -    980,099.5   (mgal)                       NAVD 88
 JV1317
 JV1317  VERT ORDER      -  FIRST     CLASS II
 JV1317
 JV1317.The horizontal coordinates were scaled from a map and have
 JV1317.an estimated accuracy of +/- 6 seconds.
 JV1317
 JV1317.The orthometric height was determined by differential leveling and
 JV1317.adjusted by the NATIONAL GEODETIC SURVEY
 JV1317.in June 1991.
 JV1317
 JV1317.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1317.GEOID18 height accuracy estimate available here.
 JV1317
 JV1317.Click photographs - Photos may exist for this station.
 JV1317
 JV1317.The dynamic height is computed by dividing the NAVD 88
 JV1317.geopotential number by the normal gravity value computed on the
 JV1317.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1317.degrees latitude (g = 980.6199 gals.).
 JV1317
 JV1317.The modeled gravity was interpolated from observed gravity values.
 JV1317
 JV1317;                    North         East    Units  Estimated Accuracy
 JV1317;SPC MD       -   178,850.      438,450.      MT  (+/- 180 meters Scaled)
 JV1317
 JV1317_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ659486(NAD 83)
 JV1317
 JV1317                          SUPERSEDED SURVEY CONTROL
 JV1317
 JV1317  NGVD 29 (11/26/84)   11.153  (m)           36.59   (f) ADJUSTED    1 2
 JV1317
 JV1317.Superseded values are not recommended for survey control.
 JV1317
 JV1317.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1317.See file dsdata.pdf to determine how the superseded data were derived.
 JV1317
 JV1317_MARKER: DB = BENCH MARK DISK
 JV1317_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1317_STAMPING: J-110 1965
 JV1317_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1317+STABILITY: SURFACE MOTION
 JV1317
 JV1317  HISTORY     - Date     Condition        Report By
 JV1317  HISTORY     - 1965     MONUMENTED       MDSRC
 JV1317  HISTORY     - 20140519 MARK NOT FOUND   USPSQD
 JV1317
 JV1317                          STATION DESCRIPTION
 JV1317
 JV1317'DESCRIBED BY MD STATE ROADS COMM 1965
 JV1317'IN BALTIMORE.
 JV1317'STATION IS LOCATED 1.0 MILE SOUTH-SOUTHWEST OF THE BALTIMORE
 JV1317'CITY HOSPITAL AT THE JUNCTION OF PONCA STREET AND BOSTON STREET.
 JV1317'176.0 FEET SOUTH OF THE CENTERLINE OF BOSTON STREET, 26.0 FEET
 JV1317'WEST OF THE CENTERLINE OF PONCA STREET, 46.2 FEET NORTH OF G AND
 JV1317'E POLE 26534, 12.2 FEET EAST OF A NORTH-SOUTH LINK FENCE LINE,
 JV1317'AND 11.5 FEET NORTHEAST OF A 6 IN SYCAMORE TREE, SET IN THE TOP
 JV1317'OF A CONCRETE POST FLUSH WITH THE GROUND.
 JV1317
 JV1317                          STATION RECOVERY (2014)
 JV1317
 JV1317'RECOVERY NOTE BY US POWER SQUADRON 2014
 JV1317'A NEW CHAINLINK FENCE HAVE BEEN INSTALLED JUST ON THE EAST SIDE OF
 JV1317'THE POWER POLES, PARALLEL TO THE ROAD CURB. THE AREA BETWEEN THE
 JV1317'FENCE AND THE CURB WAS FILLED WITH CONSTRUCTION TYPE MATERIALS, BRICK
 JV1317'STONES SAND ETC.THE MARKER WAS NOT DETECTED USING POSITION AND A
 JV1317'METAL DETECTOR.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV2443 ***********************************************************************
 HV2443  DESIGNATION -  J 111
 HV2443  PID         -  HV2443
 HV2443  STATE/COUNTY-  MD/CHARLES
 HV2443  COUNTRY     -  US
 HV2443  USGS QUAD   -  MOUNT VERNON (2019)
 HV2443
 HV2443                         *CURRENT SURVEY CONTROL
 HV2443  ______________________________________________________________________
 HV2443* NAD 83(1986) POSITION- 38 37 37.     (N) 077 04 23.     (W)   SCALED
 HV2443* NAVD 88 ORTHO HEIGHT -    53.112 (meters)      174.25  (feet) POSTED
 HV2443  ______________________________________________________________________
 HV2443  GEOID HEIGHT    -        -32.553 (meters)                     GEOID18
 HV2443  DYNAMIC HEIGHT  -         53.08  (meters)      174.1   (feet) COMP
 HV2443  MODELED GRAVITY -    980,057.6   (mgal)                       NAVD 88
 HV2443
 HV2443  VERT ORDER      -  * POSTED, SEE BELOW
 HV2443
 HV2443.The horizontal coordinates were scaled from a map and have
 HV2443.an estimated accuracy of +/- 6 seconds.
 HV2443
 HV2443.The orthometric height was determined by differential leveling
 HV2443.and adjusted by the NATIONAL GEODETIC SURVEY in 1992.
 HV2443
 HV2443.* This is a POSTED BENCH MARK height.
 HV2443
 HV2443.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV2443.GEOID18 height accuracy estimate available here.
 HV2443
 HV2443.Click photographs - Photos may exist for this station.
 HV2443
 HV2443.The dynamic height is computed by dividing the NAVD 88
 HV2443.geopotential number by the normal gravity value computed on the
 HV2443.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV2443.degrees latitude (g = 980.6199 gals.).
 HV2443
 HV2443.The modeled gravity was interpolated from observed gravity values.
 HV2443
 HV2443;                    North         East    Units  Estimated Accuracy
 HV2443;SPC MD       -   106,600.      393,640.      MT  (+/- 180 meters Scaled)
 HV2443
 HV2443_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH195774(NAD 83)
 HV2443
 HV2443                          SUPERSEDED SURVEY CONTROL
 HV2443
 HV2443  NGVD 29 (05/01/89)   53.355  (m)          175.05   (f) ADJUSTED    2 0
 HV2443  NGVD 29 (??/??/87)   53.394  (m)          175.18   (f) SUPERSEDED  2 0
 HV2443
 HV2443.Superseded values are not recommended for survey control.
 HV2443
 HV2443.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV2443.See file dsdata.pdf to determine how the superseded data were derived.
 HV2443
 HV2443_MARKER: DB = BENCH MARK DISK
 HV2443_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 HV2443_STAMPING: J 111 1966 USCGS
 HV2443_MARK LOGO: MDBCSM
 HV2443_PROJECTION: PROJECTING
 HV2443_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV2443+STABILITY: SURFACE MOTION
 HV2443
 HV2443  HISTORY     - Date     Condition        Report By
 HV2443  HISTORY     - 1966     MONUMENTED       MDSRC
 HV2443
 HV2443                          STATION DESCRIPTION
 HV2443
 HV2443'DESCRIBED BY MD STATE ROADS COMM 1966
 HV2443'5.2 MI N FROM INDIAN HEAD.
 HV2443'FROM THE INTERSECTION OF MARYLAND HIGHWAY 210 AND MARYLAND
 HV2443'HIGHWAY 227 (BRYANS ROAD) PROCEED WEST ALONG MARYLAND HIGHWAY
 HV2443'227 FOR .005 MILES, 38.0 FEET SOUTH OF THE CENTERLINE OF THE
 HV2443'HIGHWAY, 4.0 FEET SOUTH WEST OF POWER POLE NUMBER 2, 54.0
 HV2443'FEET NORTH EAST OF BRICK GATE OPENINGS TO NORTH INDIAN HEAD
 HV2443'ESTATES, SET IN THE TOP OF A CONCRETE PROJECTING 2 INCHES.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1288 ***********************************************************************
 JV1288  DESIGNATION -  J 112 MDSRC
 JV1288  PID         -  JV1288
 JV1288  STATE/COUNTY-  MD/BALTIMORE
 JV1288  COUNTRY     -  US
 JV1288  USGS QUAD   -  REISTERSTOWN (2016)
 JV1288
 JV1288                         *CURRENT SURVEY CONTROL
 JV1288  ______________________________________________________________________
 JV1288* NAD 83(1986) POSITION- 39 26 52.     (N) 076 48 54.     (W)   SCALED
 JV1288* NAVD 88 ORTHO HEIGHT -   204.894 (meters)      672.22  (feet) ADJUSTED
 JV1288  ______________________________________________________________________
 JV1288  GEOID HEIGHT    -        -32.096 (meters)                     GEOID18
 JV1288  DYNAMIC HEIGHT  -        204.786 (meters)      671.87  (feet) COMP
 JV1288  MODELED GRAVITY -    980,097.9   (mgal)                       NAVD 88
 JV1288
 JV1288  VERT ORDER      -  SECOND    CLASS 0
 JV1288
 JV1288.The horizontal coordinates were scaled from a map and have
 JV1288.an estimated accuracy of +/- 6 seconds.
 JV1288
 JV1288.The orthometric height was determined by differential leveling and
 JV1288.adjusted by the NATIONAL GEODETIC SURVEY
 JV1288.in June 1991.
 JV1288
 JV1288.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1288.GEOID18 height accuracy estimate available here.
 JV1288
 JV1288.Click photographs - Photos may exist for this station.
 JV1288
 JV1288.The dynamic height is computed by dividing the NAVD 88
 JV1288.geopotential number by the normal gravity value computed on the
 JV1288.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1288.degrees latitude (g = 980.6199 gals.).
 JV1288
 JV1288.The modeled gravity was interpolated from observed gravity values.
 JV1288
 JV1288;                    North         East    Units  Estimated Accuracy
 JV1288;SPC MD       -   197,730.      415,920.      MT  (+/- 180 meters Scaled)
 JV1288
 JV1288_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ438680(NAD 83)
 JV1288
 JV1288                          SUPERSEDED SURVEY CONTROL
 JV1288
 JV1288  NGVD 29 (11/26/84)  205.114  (m)          672.94   (f) ADJUSTED    2 0
 JV1288
 JV1288.Superseded values are not recommended for survey control.
 JV1288
 JV1288.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1288.See file dsdata.pdf to determine how the superseded data were derived.
 JV1288
 JV1288_MARKER: DB = BENCH MARK DISK
 JV1288_SETTING: 30 = SET IN A LIGHT STRUCTURE
 JV1288_SP_SET: SIGN
 JV1288_STAMPING: J-112 1967 USC AND GS
 JV1288_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV1288
 JV1288  HISTORY     - Date     Condition        Report By
 JV1288  HISTORY     - 1967     MONUMENTED       MDSRC
 JV1288
 JV1288                          STATION DESCRIPTION
 JV1288
 JV1288'DESCRIBED BY MD STATE ROADS COMM 1967
 JV1288'2 MI SE FROM REISTERSTOWN.
 JV1288'FROM THE BRIDGE OVER THE BALTIMORE BELTWAY PROCEED NORTHWEST ALONG
 JV1288'U.S. 140 (REISTERSTOWN ROAD) FOR 6.1 MILES AND STATION ON THE
 JV1288'EAST SIDE OF U.S. 140.  61.5 FEET EAST OF THE CENTERLINE OF U.S.
 JV1288'140, 23.2 FEET SOUTHEAST OF POLE NUMBER 293805.  A STANDARD
 JV1288'DISK SET FLUSH IN A DRILLED HOLE ON A CONCRETE BASE OF A LARGE
 JV1288'TEXACO SIGN, THE MOST WESTERLY OF THREE CONCRETE BASES AND
 JV1288'STAMPED J-112 1967 U.S.C. AND G.S.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV6415 ***********************************************************************
 JV6415  DESIGNATION -  J 113
 JV6415  PID         -  JV6415
 JV6415  STATE/COUNTY-  MD/MONTGOMERY
 JV6415  COUNTRY     -  US
 JV6415  USGS QUAD   -  GAITHERSBURG (2016)
 JV6415
 JV6415                         *CURRENT SURVEY CONTROL
 JV6415  ______________________________________________________________________
 JV6415* NAD 83(1986) POSITION- 39 08 12.     (N) 077 13 13.     (W)   SCALED
 JV6415* NAVD 88 ORTHO HEIGHT -   137.231 (meters)      450.23  (feet) ADJUSTED
 JV6415  ______________________________________________________________________
 JV6415  GEOID HEIGHT    -        -31.747 (meters)                     GEOID18
 JV6415  DYNAMIC HEIGHT  -        137.160 (meters)      450.00  (feet) COMP
 JV6415  MODELED GRAVITY -    980,101.5   (mgal)                       NAVD 88
 JV6415
 JV6415  VERT ORDER      -  FIRST     CLASS II
 JV6415
 JV6415.The horizontal coordinates were scaled from a map and have
 JV6415.an estimated accuracy of +/- 6 seconds.
 JV6415
 JV6415.The orthometric height was determined by differential leveling and
 JV6415.adjusted by the NATIONAL GEODETIC SURVEY
 JV6415.in April 1999.
 JV6415
 JV6415.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV6415.GEOID18 height accuracy estimate available here.
 JV6415
 JV6415.Click photographs - Photos may exist for this station.
 JV6415
 JV6415.The dynamic height is computed by dividing the NAVD 88
 JV6415.geopotential number by the normal gravity value computed on the
 JV6415.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV6415.degrees latitude (g = 980.6199 gals.).
 JV6415
 JV6415.The modeled gravity was interpolated from observed gravity values.
 JV6415
 JV6415;                    North         East    Units  Estimated Accuracy
 JV6415;SPC MD       -   163,200.      380,960.      MT  (+/- 180 meters Scaled)
 JV6415
 JV6415_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ081342(NAD 83)
 JV6415
 JV6415                          SUPERSEDED SURVEY CONTROL
 JV6415
 JV6415  NAVD 88 (07/05/94)  137.233  (m)          450.24   (f) SUPERSEDED  1 0
 JV6415  NGVD 29 (??/??/92)  137.44   (m)          450.9    (f) COMPUTED    1 0
 JV6415
 JV6415.Superseded values are not recommended for survey control.
 JV6415
 JV6415.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV6415.See file dsdata.pdf to determine how the superseded data were derived.
 JV6415
 JV6415_MARKER: DB = BENCH MARK DISK
 JV6415_SETTING: 40 = SET IN A LARGE STRUCTURE WITH DEEP FOUNDATIONS
 JV6415_SP_SET: FOUNDATION
 JV6415_STAMPING: J 113 1968
 JV6415_MARK LOGO: CGS
 JV6415_PROJECTION: FLUSH
 JV6415_MAGNETIC: N = NO MAGNETIC MATERIAL
 JV6415_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV6415+STABILITY: POSITION/ELEVATION WELL
 JV6415_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV6415+SATELLITE: SATELLITE OBSERVATIONS - September 12, 1997
 JV6415
 JV6415  HISTORY     - Date     Condition        Report By
 JV6415  HISTORY     - 1968     MONUMENTED       CGS
 JV6415  HISTORY     - 19741015 GOOD             NGS
 JV6415  HISTORY     - 19911015 GOOD             NGS
 JV6415  HISTORY     - 19970912 GOOD             NGS
 JV6415
 JV6415                          STATION DESCRIPTION
 JV6415
 JV6415'DESCRIBED BY COAST AND GEODETIC SURVEY 1968
 JV6415'IN GAITHERSBURG, ON THE NATIONAL INSTITUTE OF STANDARDS AND
 JV6415'TECHNOLOGY GROUNDS, 155 FT (47.24 M) WEST OF THE WEST CURB OF WEST
 JV6415'DRIVE, SET IN THE TOP OF THE CONCRETE FOUNDATION OF A 6-INCH WIDE
 JV6415'INDENTATION OF THE EAST WALL OF BUILDING 233, 10.8 FT (3.29 M) NORTH
 JV6415'OF THE SOUTHEAST CORNER OF THE BUILDING (ONE-STORY), 0.6 FT (0.18 M)
 JV6415'ABOVE THE GROUND, AND ABOUT LEVEL WITH WEST DRIVE.
 JV6415
 JV6415                          STATION RECOVERY (1974)
 JV6415
 JV6415'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 JV6415'RECOVERED IN GOOD CONDITION.
 JV6415
 JV6415                          STATION RECOVERY (1991)
 JV6415
 JV6415'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 JV6415'RECOVERED IN GOOD CONDITION.
 JV6415
 JV6415                          STATION RECOVERY (1997)
 JV6415
 JV6415'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (RLA)
 JV6415'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0264 ***********************************************************************
 JV0264  DESIGNATION -  J 114
 JV0264  PID         -  JV0264
 JV0264  STATE/COUNTY-  MD/KENT
 JV0264  COUNTRY     -  US
 JV0264  USGS QUAD   -  BETTERTON (2017)
 JV0264
 JV0264                         *CURRENT SURVEY CONTROL
 JV0264  ______________________________________________________________________
 JV0264* NAD 83(1986) POSITION- 39 18 52.2    (N) 076 02 48.0    (W)   HD_HELD2
 JV0264* NAVD 88 ORTHO HEIGHT -    22.706 (meters)       74.49  (feet) ADJUSTED
 JV0264  ______________________________________________________________________
 JV0264  GEOID HEIGHT    -        -33.352 (meters)                     GEOID18
 JV0264  DYNAMIC HEIGHT  -         22.694 (meters)       74.46  (feet) COMP
 JV0264  MODELED GRAVITY -    980,116.3   (mgal)                       NAVD 88
 JV0264
 JV0264  VERT ORDER      -  FIRST     CLASS II
 JV0264
 JV0264.The horizontal coordinates were established by autonomous hand held GPS
 JV0264.observations and have an estimated accuracy of +/- 10 meters.
 JV0264
 JV0264.The orthometric height was determined by differential leveling and
 JV0264.adjusted by the NATIONAL GEODETIC SURVEY
 JV0264.in June 1991.
 JV0264
 JV0264.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0264.GEOID18 height accuracy estimate available here.
 JV0264
 JV0264.Click photographs - Photos may exist for this station.
 JV0264
 JV0264.The dynamic height is computed by dividing the NAVD 88
 JV0264.geopotential number by the normal gravity value computed on the
 JV0264.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0264.degrees latitude (g = 980.6199 gals.).
 JV0264
 JV0264.The modeled gravity was interpolated from observed gravity values.
 JV0264
 JV0264;                    North         East    Units  Estimated Accuracy
 JV0264;SPC MD       -   183,350.      482,214.      MT  (+/- 10 meters HH2 GPS)
 JV0264
 JV0264_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0976852200(NAD 83)
 JV0264
 JV0264                          SUPERSEDED SURVEY CONTROL
 JV0264
 JV0264  NGVD 29 (11/26/84)   22.947  (m)           75.29   (f) ADJUSTED    1 2
 JV0264
 JV0264.Superseded values are not recommended for survey control.
 JV0264
 JV0264.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0264.See file dsdata.pdf to determine how the superseded data were derived.
 JV0264
 JV0264_MARKER: DB = BENCH MARK DISK
 JV0264_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0264_STAMPING: J 114 1971
 JV0264_MARK LOGO: CGS
 JV0264_PROJECTION: FLUSH
 JV0264_MAGNETIC: I = MARKER IS A STEEL ROD
 JV0264_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0264
 JV0264  HISTORY     - Date     Condition        Report By
 JV0264  HISTORY     - 1971     MONUMENTED       NGS
 JV0264  HISTORY     - 1990     GOOD             USPSQD
 JV0264  HISTORY     - 19960928 GOOD             USPSQD
 JV0264  HISTORY     - 20011228 MARK NOT FOUND   USPSQD
 JV0264  HISTORY     - 20250416 GOOD             PROFLN
 JV0264
 JV0264                          STATION DESCRIPTION
 JV0264
 JV0264'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0264'1 MI S FROM STILL POND.
 JV0264'ABOUT 0.1 MILE SOUTH ALONG STATE HIGHWAY 292 FROM THE JUNCTION
 JV0264'OF STATE HIGHWAY 566 AT STILL POND, THENCE 0.05 MILE WEST
 JV0264'ALONG STATE HIGHWAY 298, ON THE PROPERTY OF THE MALONE BUILDING
 JV0264'AND SUPPLY STORE, ABOUT 228 FEET NORTHWEST OF THE CENTER OF
 JV0264'THE INTERSECTION OF THE HIGHWAYS, 91.4 FEET WEST OF THE NORTHWEST
 JV0264'CORNER OF A CONCRETE BLOCK BUILDING, 58 FEET NORTH OF THE CENTER
 JV0264'LINE OF STATE HIGHWAY 298, 24.3 FEET NORTHEAST OF THE
 JV0264'SOUTHEAST GATE POST AT ENTRANCE TO THE SUPPLY YARD, 1 FOOT
 JV0264'SOUTHEAST OF A STEEL FENCE, 2 FEET SOUTH OF A METAL WITNESS
 JV0264'POST, ABOUT LEVEL WITH THE HIGHWAY AND IS A DISK ON THE TOP OF
 JV0264'A COPPER COATED STEEL ROD FLUSH WITH THE GROUND AND PROTECTED
 JV0264'BY A 6 INCH STEEL PIPE THAT IS FLUSH WITH THE GROUND.  THE ROD
 JV0264'WAS DRIVEN TO REFUSAL AT A DEPTH OF 47.7 FEET.
 JV0264
 JV0264                          STATION RECOVERY (1990)
 JV0264
 JV0264'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0264'RECOVERED IN GOOD CONDITION.
 JV0264
 JV0264                          STATION RECOVERY (1996)
 JV0264
 JV0264'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0264'RECOVERED IN GOOD CONDITION.
 JV0264
 JV0264                          STATION RECOVERY (2001)
 JV0264
 JV0264'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0264'MARK NOT FOUND.
 JV0264
 JV0264                          STATION RECOVERY (2025)
 JV0264
 JV0264'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0264'THE AREA AROUND THE MARK IS OPEN AND CURRENTLY NOT COMMERCIALLY USED.
 JV0264'THE MARK IS AGAINST THE EASTERLY SIDE OF A 6 FT (1.8 M) CHAIN LINK
 JV0264'FENCE, AT THE SECOND POST NORTHERLY FROM THE SOUTHEAST FENCE CORNER,
 JV0264'91 FT (27.7 M) WESTERLY OF THE WESTERLY CORNER OF A WHITE CONCRETE
 JV0264'BUILDING, 51 FT (15.5 M) NORTH-NORTHWEST OF THE HIGHWAY, JUST NORTH OF
 JV0264'A WITNESS POST WIRED TO THE FENCE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0272 ***********************************************************************
 JV0272  DESIGNATION -  J 115
 JV0272  PID         -  JV0272
 JV0272  STATE/COUNTY-  MD/KENT
 JV0272  COUNTRY     -  US
 JV0272  USGS QUAD   -  BETTERTON (2017)
 JV0272
 JV0272                         *CURRENT SURVEY CONTROL
 JV0272  ______________________________________________________________________
 JV0272* NAD 83(1986) POSITION- 39 15 07.5    (N) 076 04 39.9    (W)   HD_HELD2
 JV0272* NAVD 88 ORTHO HEIGHT -    22.567 (meters)       74.04  (feet) ADJUSTED
 JV0272  ______________________________________________________________________
 JV0272  GEOID HEIGHT    -        -33.379 (meters)                     GEOID18
 JV0272  DYNAMIC HEIGHT  -         22.556 (meters)       74.00  (feet) COMP
 JV0272  MODELED GRAVITY -    980,110.2   (mgal)                       NAVD 88
 JV0272
 JV0272  VERT ORDER      -  FIRST     CLASS II
 JV0272
 JV0272.The horizontal coordinates were established by autonomous hand held GPS
 JV0272.observations and have an estimated accuracy of +/- 10 meters.
 JV0272
 JV0272.The orthometric height was determined by differential leveling and
 JV0272.adjusted by the NATIONAL GEODETIC SURVEY
 JV0272.in January 2023.
 JV0272
 JV0272.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0272.GEOID18 height accuracy estimate available here.
 JV0272
 JV0272.Click photographs - Photos may exist for this station.
 JV0272
 JV0272.The dynamic height is computed by dividing the NAVD 88
 JV0272.geopotential number by the normal gravity value computed on the
 JV0272.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0272.degrees latitude (g = 980.6199 gals.).
 JV0272
 JV0272.The modeled gravity was interpolated from observed gravity values.
 JV0272
 JV0272;                    North         East    Units  Estimated Accuracy
 JV0272;SPC MD       -   176,393.      479,603.      MT  (+/- 10 meters HH2 GPS)
 JV0272
 JV0272_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0700645304(NAD 83)
 JV0272
 JV0272                          SUPERSEDED SURVEY CONTROL
 JV0272
 JV0272  NAVD 88 (06/15/91)   22.565  (m)           74.03   (f) SUPERSEDED  1 2
 JV0272  NGVD 29 (11/26/84)   22.806  (m)           74.82   (f) ADJUSTED    1 2
 JV0272
 JV0272.Superseded values are not recommended for survey control.
 JV0272
 JV0272.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0272.See file dsdata.pdf to determine how the superseded data were derived.
 JV0272
 JV0272_MARKER: DB = BENCH MARK DISK
 JV0272_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JV0272+WITH SETTING: INTO GROUND
 JV0272_STAMPING: J 115 1971
 JV0272_MARK LOGO: CGS
 JV0272_PROJECTION: FLUSH
 JV0272_MAGNETIC: I = MARKER IS A STEEL ROD
 JV0272_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV0272_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV0272+SATELLITE: SATELLITE OBSERVATIONS - April 15, 2025
 JV0272
 JV0272  HISTORY     - Date     Condition        Report By
 JV0272  HISTORY     - 1971     MONUMENTED       NGS
 JV0272  HISTORY     - 1990     GOOD             USPSQD
 JV0272  HISTORY     - 19960824 GOOD             USPSQD
 JV0272  HISTORY     - 20011228 GOOD             USPSQD
 JV0272  HISTORY     - 20140117 GOOD             ARCSHE
 JV0272  HISTORY     - 20250415 GOOD             PROFLN
 JV0272
 JV0272                          STATION DESCRIPTION
 JV0272
 JV0272'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0272'1.6 MI SE FROM WORTON.
 JV0272'ABOUT 1.65 MILES SOUTHEAST ALONG STATE HIGHWAY 297 FROM THE
 JV0272'WORTON METHODIST CHURCH AT WORTON, AT THE JUNCTION OF MORRIS
 JV0272'ROAD LEADING WEST, 123.4 FEET SOUTHWEST OF THE CENTER LINE OF
 JV0272'THE HIGHAY, 25 1/2 FEET NORTHWEST OF THE CENTER LINE OF MORRIS
 JV0272'ROAD, 4 FEET NORTHEAST OF A POWER LINE POLE, 1.5 FEET
 JV0272'SOUTHWEST OF A METAL WITNESS POST, 4 FEET ABOVE THE LEVEL OF
 JV0272'THE HIGHWAY, ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD
 JV0272'THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS FLUSH
 JV0272'WITH THE GROUND AND ENCASED IN A 4 INCH STEEL PIPE THAT
 JV0272'PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.
 JV0272
 JV0272                          STATION RECOVERY (1990)
 JV0272
 JV0272'RECOVERY NOTE BY US POWER SQUADRON 1990 (GSW)
 JV0272'RECOVERED IN GOOD CONDITION.
 JV0272
 JV0272                          STATION RECOVERY (1996)
 JV0272
 JV0272'RECOVERY NOTE BY US POWER SQUADRON 1996
 JV0272'RECOVERED IN GOOD CONDITION.
 JV0272
 JV0272                          STATION RECOVERY (2001)
 JV0272
 JV0272'RECOVERY NOTE BY US POWER SQUADRON 2001 (JPH)
 JV0272'RECOVERED IN GOOD CONDITION.
 JV0272
 JV0272                          STATION RECOVERY (2014)
 JV0272
 JV0272'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2014 (MRA)
 JV0272'RECOVERED IN GOOD CONDITION.
 JV0272
 JV0272                          STATION RECOVERY (2025)
 JV0272
 JV0272'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 JV0272'THE MARK WAS FOUND USING THE HIGHWAY AND ROAD DISTANCES, IN THICK
 JV0272'BRUSH WHICH WAS CLEARED BUT WILL GROW BACK.  IT IS 77 FT (23.5 M)
 JV0272'EAST-NORTHEAST OF POLE 122 198 WITH 2 GUY WIRES, 27 FT (8.2 M)
 JV0272'NORTHWEST OF MARY MORRIS ROAD, AT TOP OF BANK, 3 FT (0.9 M) SOUTHEAST
 JV0272'OF ORANGE FIBERGLASS WITNESS POST, 1 FT (0.3 M) SOUTHEAST OF WHITE
 JV0272'WITNESS SIGN NAILED TO BOTTOM OF A SMALL STUMP.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1871 ***********************************************************************
 JU1871  DESIGNATION -  J 118
 JU1871  PID         -  JU1871
 JU1871  STATE/COUNTY-  MD/CECIL
 JU1871  COUNTRY     -  US
 JU1871  USGS QUAD   -  NORTH EAST (2016)
 JU1871
 JU1871                         *CURRENT SURVEY CONTROL
 JU1871  ______________________________________________________________________
 JU1871* NAD 83(1986) POSITION- 39 36 40.52   (N) 075 55 04.42   (W)   HD_HELD1
 JU1871* NAVD 88 ORTHO HEIGHT -    25.032 (meters)       82.13  (feet) ADJUSTED
 JU1871  ______________________________________________________________________
 JU1871  GEOID HEIGHT    -        -33.150 (meters)                     GEOID18
 JU1871  DYNAMIC HEIGHT  -         25.019 (meters)       82.08  (feet) COMP
 JU1871  MODELED GRAVITY -    980,133.5   (mgal)                       NAVD 88
 JU1871  OBS GRAVITY     -    980,130.7   (mgal)                       GRAV_OBS
 JU1871
 JU1871  VERT ORDER      -  FIRST     CLASS I
 JU1871
 JU1871.The horizontal coordinates were determined by differentially corrected
 JU1871.hand held GPS observations or other comparable positioning techniques
 JU1871.and have an estimated accuracy of +/- 3 meters.
 JU1871
 JU1871.The orthometric height was determined by differential leveling and
 JU1871.adjusted by the NATIONAL GEODETIC SURVEY
 JU1871.in June 1991.
 JU1871
 JU1871.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1871.GEOID18 height accuracy estimate available here.
 JU1871
 JU1871.Click photographs - Photos may exist for this station.
 JU1871
 JU1871.The dynamic height is computed by dividing the NAVD 88
 JU1871.geopotential number by the normal gravity value computed on the
 JU1871.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1871.degrees latitude (g = 980.6199 gals.).
 JU1871
 JU1871.The modeled gravity was interpolated from observed gravity values.
 JU1871
 JU1871.The observed gravity was obtained from relative gravimeter ties
 JU1871.to the IGSN71 gravity network.
 JU1871
 JU1871;                    North         East    Units  Estimated Accuracy
 JU1871;SPC MD       -   216,418.2     492,927.8     MT  (+/- 3 meters HH1 GPS) 
 JU1871
 JU1871_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ2120585014(NAD 83)
 JU1871
 JU1871                          SUPERSEDED SURVEY CONTROL
 JU1871
 JU1871  NGVD 29 (11/26/84)   25.267  (m)           82.90   (f) ADJUSTED    1 1
 JU1871
 JU1871.Superseded values are not recommended for survey control.
 JU1871
 JU1871.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1871.See file dsdata.pdf to determine how the superseded data were derived.
 JU1871
 JU1871_MARKER: DB = BENCH MARK DISK
 JU1871_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JU1871_STAMPING: J 118 1971
 JU1871_MARK LOGO: CGS
 JU1871_PROJECTION: RECESSED 10 CENTIMETERS
 JU1871_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JU1871_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JU1871+SATELLITE: SATELLITE OBSERVATIONS - August 20, 2014
 JU1871
 JU1871  HISTORY     - Date     Condition        Report By
 JU1871  HISTORY     - 1971     MONUMENTED       NGS
 JU1871  HISTORY     - 1982     GOOD             LOCSUR
 JU1871  HISTORY     - 19910216 GOOD             USPSQD
 JU1871  HISTORY     - 20040313 GOOD             GEOCAC
 JU1871  HISTORY     - 20120210 GOOD             MD-015
 JU1871  HISTORY     - 20140820 GOOD             JARICE
 JU1871
 JU1871                          STATION DESCRIPTION
 JU1871
 JU1871'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1871'5 MI W FROM ELKTON.
 JU1871'ABOUT 4.95 MILES WEST ALONG U.S. HIGHWAY 40 FROM THE JUNCTION
 JU1871'OF U.S. HIGHWAY 213 AT ELKTON, ABOUT 0.5 MILE WEST OF THE JUNCTION
 JU1871'OF MARLEY ROAD THAT LEADS NORTH, ABOUT 100 YARDS WEST OF THE
 JU1871'CENTER OF THE JUNCTION OF THE MORE WESTERLY OF TWO DRIVEWAYS WHICH
 JU1871'LEAD NORTH TO THE TOWN AND COUNTRY MOBILE HOME ESTATES, 31 FEET
 JU1871'NORTH OF THE CENTER LINE OF THE SOUTH LANES OF THE HIGHWAY,
 JU1871'31 FEET SOUTH OF THE CENTER LINE OF THE NORTH LANES OF THE HIGHWAY,
 JU1871'76 FEET SOUTHEAST OF THE CENTER OF THE JUNCTION OF THE NORTH LANES
 JU1871'OF THE HIGHWAY AND A DRIVEWAY THAT LEADS NORTH TO WEAVERS APARTMENT
 JU1871'BUILDING, 4.0 FEET WEST OF THE WEST EDGE OF A 4- X 4-FOOT CONCRETE
 JU1871'CATCH BASIN, 2.0 FEET EAST OF A METAL WITNESS POST, AND ON THE
 JU1871'TOP OF A COPPER COATED ROD THAT IS LEVEL WITH THE SURFACE OF THE
 JU1871'GROUND AND IS PROTECTED BY A 6-INCH METAL PIPE THAT PROJECTS 1
 JU1871'INCH.  THE ROD WAS DRIVEN TO A DEPTH OF 32 FEET.
 JU1871
 JU1871                          STATION RECOVERY (1982)
 JU1871
 JU1871'RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1982
 JU1871'IT IS 4 FT. WEST OF CONCRETE CATCH BASIN, BUT 1/4 FEET WNW OF THE
 JU1871'WITNESS POST. IT WAS BURIED TWO INCHES UNDER WEEDS AND SOIL.
 JU1871
 JU1871                          STATION RECOVERY (1991)
 JU1871
 JU1871'RECOVERY NOTE BY US POWER SQUADRON 1991 (MWS)
 JU1871'RECOVERED IN GOOD CONDITION.
 JU1871
 JU1871                          STATION RECOVERY (2004)
 JU1871
 JU1871'RECOVERY NOTE BY GEOCACHING 2004 (APC)
 JU1871'FOUND AS DESCRIBED EXCEPT WITNESS POST NOT SEEN.
 JU1871
 JU1871                          STATION RECOVERY (2012)
 JU1871
 JU1871'RECOVERY NOTE BY CECIL COUNTY MARYLAND 2012 (DRB)
 JU1871'RECOVERED IN GOOD CONDITION.
 JU1871
 JU1871                          STATION RECOVERY (2014)
 JU1871
 JU1871'RECOVERY NOTE BY J A RICE INC 2014 (MRA)
 JU1871'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU0629 ***********************************************************************
 HU0629  DESIGNATION -  J 119
 HU0629  PID         -  HU0629
 HU0629  STATE/COUNTY-  MD/WICOMICO
 HU0629  COUNTRY     -  US
 HU0629  USGS QUAD   -  HEBRON (2016)
 HU0629
 HU0629                         *CURRENT SURVEY CONTROL
 HU0629  ______________________________________________________________________
 HU0629* NAD 83(1986) POSITION- 38 26 50.     (N) 075 41 55.     (W)   SCALED
 HU0629* NAVD 88 ORTHO HEIGHT -    10.850 (meters)       35.60  (feet) ADJUSTED
 HU0629  ______________________________________________________________________
 HU0629  GEOID HEIGHT    -        -35.649 (meters)                     GEOID18
 HU0629  DYNAMIC HEIGHT  -         10.843 (meters)       35.57  (feet) COMP
 HU0629  MODELED GRAVITY -    980,013.2   (mgal)                       NAVD 88
 HU0629
 HU0629  VERT ORDER      -  FIRST     CLASS II
 HU0629
 HU0629.The horizontal coordinates were scaled from a map and have
 HU0629.an estimated accuracy of +/- 6 seconds.
 HU0629
 HU0629.The orthometric height was determined by differential leveling and
 HU0629.adjusted by the NATIONAL GEODETIC SURVEY
 HU0629.in June 1991.
 HU0629
 HU0629.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU0629.GEOID18 height accuracy estimate available here.
 HU0629
 HU0629.Click photographs - Photos may exist for this station.
 HU0629
 HU0629.The dynamic height is computed by dividing the NAVD 88
 HU0629.geopotential number by the normal gravity value computed on the
 HU0629.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU0629.degrees latitude (g = 980.6199 gals.).
 HU0629
 HU0629.The modeled gravity was interpolated from observed gravity values.
 HU0629
 HU0629;                    North         East    Units  Estimated Accuracy
 HU0629;SPC MD       -    87,460.      513,600.      MT  (+/- 180 meters Scaled)
 HU0629
 HU0629_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH390556(NAD 83)
 HU0629
 HU0629                          SUPERSEDED SURVEY CONTROL
 HU0629
 HU0629  NGVD 29 (11/26/84)   11.094  (m)           36.40   (f) ADJUSTED    1 2
 HU0629
 HU0629.Superseded values are not recommended for survey control.
 HU0629
 HU0629.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU0629.See file dsdata.pdf to determine how the superseded data were derived.
 HU0629
 HU0629_MARKER: DB = BENCH MARK DISK
 HU0629_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU0629+WITH SETTING: INTO GROUND
 HU0629_STAMPING: J 119 1971
 HU0629_MARK LOGO: CGS
 HU0629_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU0629+STABILITY: SURFACE MOTION
 HU0629
 HU0629  HISTORY     - Date     Condition        Report By
 HU0629  HISTORY     - 1971     MONUMENTED       NGS
 HU0629  HISTORY     - 19971018 GOOD             USPSQD
 HU0629
 HU0629                          STATION DESCRIPTION
 HU0629
 HU0629'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HU0629'3.1 MI NW FROM HEBRON.
 HU0629'ABOUT 1.2 MILES NORTHEAST ALONG STATE HIGHWAY 347 FROM THE POST
 HU0629'OFFICE AT HEBRON, THENCE 1.85 MILES NORTHWEST ALONG U.S. HIGHWAY
 HU0629'50, 224 FEET SOUTHWEST OF THE CENTER LINE OF THE SOUTHWEST LANE
 HU0629'OF THE HIGHWAY, 63 FEET SOUTHEAST OF THE CENTER LINE OF A PAVED
 HU0629'ROAD, 18 1/2 FEET EAST OF THE MOST NORTHEASTERLY ONE OF 3 OAK
 HU0629'TREES, 13 1/2 FEET SOUTHWEST OF A POWER LINE POLE, BETWEEN TWO
 HU0629'BRACE WIRES, 0.9 FOOT SOUTHEAST OF A METAL WITNESS POST, 1 FOOT
 HU0629'ABOVE THE LEVEL OF THE ROAD, AND ON THE TOP OF A 4-FOOT COPPER
 HU0629'COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK
 HU0629'IS LEVEL WITH THE SURFACE OF THE GROUND AND ENCASED IN A 4-INCH
 HU0629'PIPE THAT IS LEVEL WITH THE GROUND.  NOTE-- THIS MARK MAY BE
 HU0629'REACHED BY GOING 3.65 MILES SOUTHEAST ALONG OLD HIGHWAY 50 AND
 HU0629'U.S. HIGHWAY 50 FROM THE POST OFFICE AT MARDELA SPRINGS.
 HU0629
 HU0629                          STATION RECOVERY (1997)
 HU0629
 HU0629'RECOVERY NOTE BY US POWER SQUADRON 1997
 HU0629'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3438 ***********************************************************************
 JV3438  DESIGNATION -  J 12
 JV3438  PID         -  JV3438
 JV3438  STATE/COUNTY-  MD/WASHINGTON
 JV3438  COUNTRY     -  US
 JV3438  USGS QUAD   -  HAGERSTOWN (2016)
 JV3438
 JV3438                         *CURRENT SURVEY CONTROL
 JV3438  ______________________________________________________________________
 JV3438* NAD 83(1986) POSITION- 39 39 03.     (N) 077 42 10.     (W)   SCALED
 JV3438* NAVD 88 ORTHO HEIGHT -   160.931 (meters)      527.99  (feet) ADJUSTED
 JV3438  ______________________________________________________________________
 JV3438  GEOID HEIGHT    -        -34.131 (meters)                     GEOID18
 JV3438  DYNAMIC HEIGHT  -        160.836 (meters)      527.68  (feet) COMP
 JV3438  MODELED GRAVITY -    980,035.5   (mgal)                       NAVD 88
 JV3438
 JV3438  VERT ORDER      -  FIRST     CLASS II
 JV3438
 JV3438.The horizontal coordinates were scaled from a map and have
 JV3438.an estimated accuracy of +/- 6 seconds.
 JV3438
 JV3438.The orthometric height was determined by differential leveling and
 JV3438.adjusted by the NATIONAL GEODETIC SURVEY
 JV3438.in June 1991.
 JV3438
 JV3438.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3438.GEOID18 height accuracy estimate available here.
 JV3438
 JV3438.Click photographs - Photos may exist for this station.
 JV3438
 JV3438.The dynamic height is computed by dividing the NAVD 88
 JV3438.geopotential number by the normal gravity value computed on the
 JV3438.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3438.degrees latitude (g = 980.6199 gals.).
 JV3438
 JV3438.The modeled gravity was interpolated from observed gravity values.
 JV3438
 JV3438;                    North         East    Units  Estimated Accuracy
 JV3438;SPC MD       -   220,490.      339,680.      MT  (+/- 180 meters Scaled)
 JV3438
 JV3438_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ681924(NAD 83)
 JV3438
 JV3438                          SUPERSEDED SURVEY CONTROL
 JV3438
 JV3438  NGVD 29 (11/26/84)  161.126  (m)          528.63   (f) ADJUSTED    1 2
 JV3438
 JV3438.Superseded values are not recommended for survey control.
 JV3438
 JV3438.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3438.See file dsdata.pdf to determine how the superseded data were derived.
 JV3438
 JV3438_MARKER: DB = BENCH MARK DISK
 JV3438_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV3438_SP_SET: UNDERPASS
 JV3438_STAMPING: J 12 1935
 JV3438_MARK LOGO: CGS
 JV3438_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3438_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 JV3438+SATELLITE: SATELLITE OBSERVATIONS - February 10, 2008
 JV3438
 JV3438  HISTORY     - Date     Condition        Report By
 JV3438  HISTORY     - 1935     MONUMENTED       CGS
 JV3438  HISTORY     - 1942     GOOD             CGS
 JV3438  HISTORY     - 1979     GOOD             NGS
 JV3438  HISTORY     - 20050715 GOOD             NAGEL
 JV3438  HISTORY     - 20080210 GOOD             GEOCAC
 JV3438
 JV3438                          STATION DESCRIPTION
 JV3438
 JV3438'DESCRIBED BY COAST AND GEODETIC SURVEY 1942
 JV3438'AT HAGERSTOWN.
 JV3438'AT HAGERSTOWN, WASHINGTON COUNTY, ON THE WESTERN MARYLAND RAILWAY,
 JV3438'ABOUT 984 FEET SOUTH OF MILEPOST 85, IN A TOP OF A CONCRETE
 JV3438'UNDERPASS, AND 12 FEET WEST OF THE CENTER LINE OF THE TRACK.  A
 JV3438'STANDARD DISK, STAMPED J 12 1935.
 JV3438
 JV3438                          STATION RECOVERY (1979)
 JV3438
 JV3438'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979
 JV3438'RECOVERED IN GOOD CONDITION.
 JV3438
 JV3438                          STATION RECOVERY (2005)
 JV3438
 JV3438'RECOVERY NOTE BY GEORGE E NAGEL AND ASSOCIATES INC 2005 (GEN)
 JV3438'OVERALL DISK IS IN GOOD SHAPE.  SOMEONE HAS MUTILATED THE STAMPING.
 JV3438'MARK IS LOCATED AT THE NORTHWEST CORNER OF UNDERPASS.
 JV3438
 JV3438                          STATION RECOVERY (2008)
 JV3438
 JV3438'RECOVERY NOTE BY GEOCACHING 2008 (DPB)
 JV3438'25 FEET NNW OF TRACK CENTER LINE AND 3 FEET FROM THE END OF THE NW
 JV3438'WALL.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0235 ***********************************************************************
 HV0235  DESIGNATION -  J 120
 HV0235  PID         -  HV0235
 HV0235  STATE/COUNTY-  MD/DORCHESTER
 HV0235  COUNTRY     -  US
 HV0235  USGS QUAD   -  CAMBRIDGE (2016)
 HV0235
 HV0235                         *CURRENT SURVEY CONTROL
 HV0235  ______________________________________________________________________
 HV0235* NAD 83(2011) POSITION- 38 33 38.28730(N) 076 04 00.48316(W)   ADJUSTED
 HV0235* NAD 83(2011) ELLIP HT-   -29.856 (meters)        (06/27/12)   ADJUSTED
 HV0235* NAD 83(2011) EPOCH   -  2010.00
 HV0235* NAVD 88 ORTHO HEIGHT -     5.209 (meters)       17.09  (feet) ADJUSTED
 HV0235  ______________________________________________________________________
 HV0235  GEOID HEIGHT    -        -35.067 (meters)                     GEOID18
 HV0235  NAD 83(2011) X  -  1,202,472.228 (meters)                     COMP
 HV0235  NAD 83(2011) Y  - -4,846,919.579 (meters)                     COMP
 HV0235  NAD 83(2011) Z  -  3,954,276.240 (meters)                     COMP
 HV0235  LAPLACE CORR    -         -3.26  (seconds)                    DEFLEC18
 HV0235  DYNAMIC HEIGHT  -          5.205 (meters)       17.08  (feet) COMP
 HV0235  MODELED GRAVITY -    980,016.8   (mgal)                       NAVD 88
 HV0235
 HV0235  VERT ORDER      -  FIRST     CLASS II
 HV0235
 HV0235  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0235  Standards:
 HV0235         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0235            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0235  -------------------------------------------------------------------
 HV0235  NETWORK    1.79   2.86           0.63   0.81   1.46     -0.08270511
 HV0235  -------------------------------------------------------------------
 HV0235  Click here for local accuracies and other accuracy information.
 HV0235
 HV0235.The horizontal coordinates were established by GPS observations
 HV0235.and adjusted by the National Geodetic Survey in June 2012.
 HV0235
 HV0235.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0235.been affixed to the stable North American tectonic plate. See 
 HV0235.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0235
 HV0235.The horizontal coordinates are valid at the epoch date displayed above
 HV0235.which is a decimal equivalence of Year/Month/Day.
 HV0235
 HV0235.The orthometric height was determined by differential leveling and
 HV0235.adjusted by the NATIONAL GEODETIC SURVEY
 HV0235.in June 1991.
 HV0235
 HV0235.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0235.GEOID18 height accuracy estimate available here.
 HV0235
 HV0235.Click photographs - Photos may exist for this station.
 HV0235
 HV0235.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0235
 HV0235.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0235
 HV0235.The ellipsoidal height was determined by GPS observations
 HV0235.and is referenced to NAD 83.
 HV0235
 HV0235.The dynamic height is computed by dividing the NAVD 88
 HV0235.geopotential number by the normal gravity value computed on the
 HV0235.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0235.degrees latitude (g = 980.6199 gals.).
 HV0235
 HV0235.The modeled gravity was interpolated from observed gravity values.
 HV0235
 HV0235. The following values were computed from the NAD 83(2011) position.
 HV0235
 HV0235;                    North         East     Units Scale Factor Converg.
 HV0235;SPC MD       -    99,649.749   481,332.977   MT  0.99996489   +0 35 08.5
 HV0235;SPC MD       -   326,934.22  1,579,173.28   sFT  0.99996489   +0 35 08.5
 HV0235;UTM  18      - 4,268,561.062   407,054.059   MT  0.99970638   -0 39 54.1
 HV0235
 HV0235!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0235!SPC MD       -   1.00000468  x   0.99996489  =   0.99996957
 HV0235!UTM  18      -   1.00000468  x   0.99970638  =   0.99971106
 HV0235
 HV0235_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0705468561(NAD 83)
 HV0235
 HV0235|---------------------------------------------------------------------|
 HV0235| PID    Reference Object                     Distance      Geod. Az  |
 HV0235|                                                           dddmmss.s |
 HV0235| DJ3501 J 120 AZ MK                         368.212 METERS 10229     |
 HV0235|---------------------------------------------------------------------|
 HV0235
 HV0235                          SUPERSEDED SURVEY CONTROL
 HV0235
 HV0235  NAD 83(2007)-  38 33 38.28766(N)    076 04 00.48431(W) AD(2002.00) 1
 HV0235  ELLIP H (04/02/09)  -29.849  (m)                       GP(2002.00) 4 1
 HV0235  NAD 83(1991)-  38 33 38.28739(N)    076 04 00.48375(W) AD(       ) 1
 HV0235  ELLIP H (10/15/07)  -29.818  (m)                       GP(       ) 4 1
 HV0235  NAVD 88               5.21   (m)           17.1    (f) LEVELING    3  
 HV0235  NGVD 29               5.44   (m)           17.8    (f) LEVELING    3  
 HV0235  NGVD 29 (11/26/84)    5.443  (m)           17.86   (f) ADJUSTED    1 2
 HV0235
 HV0235.Superseded values are not recommended for survey control.
 HV0235
 HV0235.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0235.See file dsdata.pdf to determine how the superseded data were derived.
 HV0235
 HV0235_MARKER: DB = BENCH MARK DISK
 HV0235_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0235+WITH SETTING: INTO GROUND
 HV0235_STAMPING: J 120 1971
 HV0235_MARK LOGO: CGS
 HV0235_PROJECTION: RECESSED 25 CENTIMETERS
 HV0235_MAGNETIC: I = MARKER IS A STEEL ROD
 HV0235_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0235+STABILITY: SURFACE MOTION
 HV0235_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0235+SATELLITE: SATELLITE OBSERVATIONS - August 22, 2017
 HV0235
 HV0235  HISTORY     - Date     Condition        Report By
 HV0235  HISTORY     - 1971     MONUMENTED       NGS
 HV0235  HISTORY     - 19870101 GOOD             MDDT
 HV0235  HISTORY     - 20010331 GOOD             NGS
 HV0235  HISTORY     - 20020624 GOOD             MDSHA
 HV0235  HISTORY     - 20051107 GOOD             USPSQD
 HV0235  HISTORY     - 20070218 GOOD             USPSQD
 HV0235  HISTORY     - 20090720 GOOD             CO-OPS
 HV0235  HISTORY     - 20170822 GOOD             INDIV
 HV0235
 HV0235                          STATION DESCRIPTION
 HV0235
 HV0235'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0235'AT CAMBRIDGE.
 HV0235'AT CAMBRIDGE, ABOUT 0.75 MILE SOUTH ALONG U.S. HIGHWAY 50 FROM
 HV0235'THE SOUTH END OF THE HIGHWAY BRIDGE OVER THE CHOPTANK RIVER,
 HV0235'THENCE 0.15 MILE SOUTH ALONG SUNBURST HIGHWAY (OLD U.S. HIGHWAY
 HV0235'50), AT THE JUNCTION OF THE HIGHWAY AND WASHINGTON STREET
 HV0235'(STATE HIGHWAY 343), IN THE MEDIAN FOR SUNBURST HIGHWAY, 65 1/2
 HV0235'FEET NORTH OF THE CENTER LINE OF WASHINGTON STREET, 20 1/2 FEET
 HV0235'EAST OF THE CENTER LINE OF THE WEST LANES OF SUNBURST HIGHWAY,
 HV0235'20 FEET WEST OF THE CENTER LINE OF THE EAST LANES OF THE HIGHWAY,
 HV0235'17 1/2 FEET NORTH OF THE SOUTH END OF THE MEDIAN, 1.0 FOOT
 HV0235'SOUTH OF A METAL WITNESS POST, ABOUT LEVEL WITH SUNBURST
 HV0235'HIGHWAY, AND ON THE TOP OF A 4-FOOT SECTION OF COPPER COATED
 HV0235'ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS 4
 HV0235'INCHES BELOW THE GROUND AND IS PROTECTED BY A 4-INCH PIPE
 HV0235'THAT IS 2 INCHES BELOW THE GROUND.  NOTE-- THIS MARK MAY ALSO
 HV0235'BE REACHED BY GOING 0.7 MILE EAST ALONG WASHINGTON STREET FROM
 HV0235'THE INTERSECTION OF RACE STREET.
 HV0235
 HV0235                          STATION RECOVERY (1987)
 HV0235
 HV0235'RECOVERY NOTE BY MARYLAND DEPARTMENT OF TRANSPORTATION 1987 (RGP)
 HV0235'RECOVERED AS DESCRIBED
 HV0235
 HV0235                          STATION RECOVERY (2001)
 HV0235
 HV0235'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)
 HV0235'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.
 HV0235
 HV0235                          STATION RECOVERY (2002)
 HV0235
 HV0235'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 HV0235'RECOVERED AS DESCRIBED.
 HV0235
 HV0235                          STATION RECOVERY (2005)
 HV0235
 HV0235'RECOVERY NOTE BY US POWER SQUADRON 2005 (LGD)
 HV0235'NEAR (50 YDS SW) TO NEWLY CONSTRUCTED WAWA GAS/FOOD DRIVE-IN. AREA
 HV0235'AROUND BENCHMARK HAS BEEN SODDED AND MARK IS RESESSED ABOUT 10 INCHES
 HV0235'BELOW GRASS, 11 FEET EAST OF OLD RT 50 CURB AND 50 FEET EAST OF FIRE
 HV0235'HYDRANT ACROSS OLD RT 50. WITNESS POST, LOCATED ABOUT 5 FT TO WEST OF
 HV0235'MARK, IS IN PLACE BUT SOMEWHAT LOOSE IN GROUND.
 HV0235
 HV0235                          STATION RECOVERY (2007)
 HV0235
 HV0235'RECOVERY NOTE BY US POWER SQUADRON 2007 (NH)
 HV0235'RECOVERED IN GOOD CONDITION.
 HV0235
 HV0235                          STATION RECOVERY (2009)
 HV0235
 HV0235'RECOVERY NOTE BY CEN OPER OCEANOG PROD+SVCS 2009 (DH)
 HV0235'RECOVERED IN GOOD CONDITION. NOTE--ACCESS TO THE DATUM POINT IS
 HV0235'THROUGH A 5-INCH LOGO CAP.
 HV0235
 HV0235                          STATION RECOVERY (2017)
 HV0235
 HV0235'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2017 (WRA)
 HV0235'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 DJ3501 ***********************************************************************
 DJ3501  DESIGNATION -  J 120 AZ MK
 DJ3501  PID         -  DJ3501
 DJ3501  STATE/COUNTY-  MD/DORCHESTER
 DJ3501  COUNTRY     -  US
 DJ3501  USGS QUAD   -  CAMBRIDGE (2016)
 DJ3501
 DJ3501                         *CURRENT SURVEY CONTROL
 DJ3501  ______________________________________________________________________
 DJ3501* NAD 83(2011) POSITION- 38 33 35.70749(N) 076 03 45.63392(W)   ADJUSTED
 DJ3501* NAD 83(2011) ELLIP HT-   -29.706 (meters)        (06/27/12)   ADJUSTED
 DJ3501* NAD 83(2011) EPOCH   -  2010.00
 DJ3501* NAVD 88 ORTHO HEIGHT -     5.4   (meters)       18.    (feet) GPS OBS
 DJ3501  ______________________________________________________________________
 DJ3501  NAVD 88 orthometric height was determined with geoid model    GEOID03
 DJ3501  GEOID HEIGHT    -        -35.047 (meters)                     GEOID03
 DJ3501  GEOID HEIGHT    -        -35.075 (meters)                     GEOID18
 DJ3501  NAD 83(2011) X  -  1,202,833.132 (meters)                     COMP
 DJ3501  NAD 83(2011) Y  - -4,846,881.239 (meters)                     COMP
 DJ3501  NAD 83(2011) Z  -  3,954,214.130 (meters)                     COMP
 DJ3501  LAPLACE CORR    -         -3.25  (seconds)                    DEFLEC18
 DJ3501
 DJ3501  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 DJ3501  Standards:
 DJ3501         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 DJ3501            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 DJ3501  -------------------------------------------------------------------
 DJ3501  NETWORK    1.73   2.72           0.61   0.78   1.39     -0.08449107
 DJ3501  -------------------------------------------------------------------
 DJ3501  Click here for local accuracies and other accuracy information.
 DJ3501
 DJ3501.The horizontal coordinates were established by GPS observations
 DJ3501.and adjusted by the National Geodetic Survey in June 2012.
 DJ3501
 DJ3501.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 DJ3501.been affixed to the stable North American tectonic plate. See 
 DJ3501.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 DJ3501
 DJ3501.The horizontal coordinates are valid at the epoch date displayed above
 DJ3501.which is a decimal equivalence of Year/Month/Day.
 DJ3501
 DJ3501.The orthometric height was determined by GPS observations and a
 DJ3501.high-resolution geoid model.
 DJ3501
 DJ3501.Significant digits in the geoid height do not necessarily reflect accuracy.
 DJ3501.GEOID18 height accuracy estimate available here.
 DJ3501
 DJ3501.Click photographs - Photos may exist for this station.
 DJ3501
 DJ3501.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 DJ3501
 DJ3501.The Laplace correction was computed from DEFLEC18 derived deflections.
 DJ3501
 DJ3501.The ellipsoidal height was determined by GPS observations
 DJ3501.and is referenced to NAD 83.
 DJ3501
 DJ3501. The following values were computed from the NAD 83(2011) position.
 DJ3501
 DJ3501;                    North         East     Units Scale Factor Converg.
 DJ3501;SPC MD       -    99,573.890   481,693.278   MT  0.99996496   +0 35 17.9
 DJ3501;SPC MD       -   326,685.34  1,580,355.36   sFT  0.99996496   +0 35 17.9
 DJ3501;UTM  18      - 4,268,477.378   407,412.525   MT  0.99970557   -0 39 44.8
 DJ3501
 DJ3501!             -  Elev Factor  x  Scale Factor =   Combined Factor
 DJ3501!SPC MD       -   1.00000466  x   0.99996496  =   0.99996962
 DJ3501!UTM  18      -   1.00000466  x   0.99970557  =   0.99971023
 DJ3501
 DJ3501_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0741268477(NAD 83)
 DJ3501
 DJ3501|---------------------------------------------------------------------|
 DJ3501| PID    Reference Object                     Distance      Geod. Az  |
 DJ3501|                                                           dddmmss.s |
 DJ3501| HV0235 J 120                               368.212 METERS 28229     |
 DJ3501|---------------------------------------------------------------------|
 DJ3501
 DJ3501                          SUPERSEDED SURVEY CONTROL
 DJ3501
 DJ3501  NAD 83(2007)-  38 33 35.70785(N)    076 03 45.63506(W) AD(2002.00) 1
 DJ3501  ELLIP H (04/02/09)  -29.699  (m)                       GP(2002.00) 4 1
 DJ3501  NAD 83(1991)-  38 33 35.70758(N)    076 03 45.63451(W) AD(       ) 1
 DJ3501  ELLIP H (10/15/07)  -29.667  (m)                       GP(       ) 4 1
 DJ3501
 DJ3501.Superseded values are not recommended for survey control.
 DJ3501
 DJ3501.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 DJ3501.See file dsdata.pdf to determine how the superseded data were derived.
 DJ3501
 DJ3501_MARKER: DD = SURVEY DISK
 DJ3501_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 DJ3501_STAMPING: J 120 AZ 1991
 DJ3501_MARK LOGO: MDSHA
 DJ3501_MAGNETIC: N = NO MAGNETIC MATERIAL
 DJ3501_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 DJ3501+STABILITY: SURFACE MOTION
 DJ3501_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 DJ3501+SATELLITE: SATELLITE OBSERVATIONS - June 24, 2002
 DJ3501
 DJ3501  HISTORY     - Date     Condition        Report By
 DJ3501  HISTORY     - 1991     MONUMENTED       MDSHA
 DJ3501  HISTORY     - 20020624 GOOD             MDSHA
 DJ3501
 DJ3501                          STATION DESCRIPTION
 DJ3501
 DJ3501'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 DJ3501'THE MARK IS LOCATED ABOUT 4.6 MI (7.3 KM) NORTHWEST OF AIREY, 3.3 MI
 DJ3501'(5.3 KM) WEST OF MOUNT HOLLY AND 0.9 MI (1.5 KM) EAST-SOUTHEAST OF
 DJ3501'CAMBRIDGE.  OWNERSHIP--ROAD RIGHT-OF-WAY.
 DJ3501'
 DJ3501'TO REACH THE MARK FROM THE US ROUTE 50 BRIDGE OVER THE CHOPTANK RIVER
 DJ3501'AT CAMBRIDGE, GO 0.2 MI (0.3 KM) SOUTH ON US ROUTE 50 TO THE MARK ON
 DJ3501'THE LEFT.
 DJ3501'
 DJ3501'IT IS 28.0 FT (8.5 M) EAST OF THE FACE OF THE CURB LINE OF THE
 DJ3501'WESTBOUND LANES OF US ROUTE 50, 14.3 FT (4.4 M) WEST OF THE CURB LINE
 DJ3501'OF A PAVED SERVICE ROAD, 50.4 FT (15.4 M) SOUTHEAST OF THE SOUTHEAST
 DJ3501'CORNER OF A DROP INLET, 100.5 FT (30.6 M) SOUTHEAST OF A METAL LIGHT
 DJ3501'POLE AND SET IN THE TOP OF A 9-INCH (23 CM) ROUND CONCRETE POST FLUSH
 DJ3501'WITH THE GROUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0603 ***********************************************************************
 JV0603  DESIGNATION -  J 121
 JV0603  PID         -  JV0603
 JV0603  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0603  COUNTRY     -  US
 JV0603  USGS QUAD   -  RELAY (2016)
 JV0603
 JV0603                         *CURRENT SURVEY CONTROL
 JV0603  ______________________________________________________________________
 JV0603* NAD 83(1986) POSITION- 39 13 29.     (N) 076 38 29.     (W)   SCALED
 JV0603* NAVD 88 ORTHO HEIGHT -     3.437 (meters)       11.28  (feet) ADJUSTED
 JV0603  ______________________________________________________________________
 JV0603  GEOID HEIGHT    -        -32.735 (meters)                     GEOID18
 JV0603  DYNAMIC HEIGHT  -          3.435 (meters)       11.27  (feet) COMP
 JV0603  MODELED GRAVITY -    980,098.1   (mgal)                       NAVD 88
 JV0603
 JV0603  VERT ORDER      -  FIRST     CLASS I
 JV0603
 JV0603.The horizontal coordinates were scaled from a map and have
 JV0603.an estimated accuracy of +/- 6 seconds.
 JV0603
 JV0603.The orthometric height was determined by differential leveling and
 JV0603.adjusted by the NATIONAL GEODETIC SURVEY
 JV0603.in June 1991.
 JV0603
 JV0603.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0603.GEOID18 height accuracy estimate available here.
 JV0603
 JV0603.Click photographs - Photos may exist for this station.
 JV0603
 JV0603.The dynamic height is computed by dividing the NAVD 88
 JV0603.geopotential number by the normal gravity value computed on the
 JV0603.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0603.degrees latitude (g = 980.6199 gals.).
 JV0603
 JV0603.The modeled gravity was interpolated from observed gravity values.
 JV0603
 JV0603;                    North         East    Units  Estimated Accuracy
 JV0603;SPC MD       -   173,010.      430,970.      MT  (+/- 180 meters Scaled)
 JV0603
 JV0603_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ583429(NAD 83)
 JV0603
 JV0603                          SUPERSEDED SURVEY CONTROL
 JV0603
 JV0603  NGVD 29 (11/26/84)    3.679  (m)           12.07   (f) ADJUSTED    1 1
 JV0603
 JV0603.Superseded values are not recommended for survey control.
 JV0603
 JV0603.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0603.See file dsdata.pdf to determine how the superseded data were derived.
 JV0603
 JV0603_MARKER: DB = BENCH MARK DISK
 JV0603_SETTING: 36 = SET IN A MASSIVE STRUCTURE
 JV0603_SP_SET: BRIDGE
 JV0603_STAMPING: J 121 1971
 JV0603_MARK LOGO: CGS
 JV0603_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0603
 JV0603  HISTORY     - Date     Condition        Report By
 JV0603  HISTORY     - 1971     MONUMENTED       NGS
 JV0603  HISTORY     - 20030923 MARK NOT FOUND   USPSQD
 JV0603
 JV0603                          STATION DESCRIPTION
 JV0603
 JV0603'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0603'2 MI N FROM SHIPLEY.
 JV0603'ABOUT 1.1 MILES NORTHEAST ALONG STATE HIGHWAY 170 FROM THE CROSSING
 JV0603'OF THE BALTIMORE AND OHIO RAILROAD AT SHIPLEY, THENCE 0.85 MILE
 JV0603'NORTH ALONG OLD ANNAPOLIS ROAD, OR ABOUT 1.95 MILES SOUTH ALONG
 JV0603'OLD ANNAPOLIS ROAD FROM THE OVERPASS FOR THE BALTIMORE-WASHINGTON
 JV0603'EXPRESSWAY AT WEST BALTIMORE, 19 FEET EAST OF THE CENTER LINE OF
 JV0603'THE ROAD, SET IN THE TOP OF THE EAST END OF THE SOUTH CONCRETE
 JV0603'ABUTMENT OF THE ROAD BRIDGE OVER THE PATAPSCO RIVER, 1 FOOT WEST
 JV0603'OF THE EAST END OF THE ABUTMENT, AND ABOUT LEVEL WITH THE ROAD.
 JV0603
 JV0603                          STATION RECOVERY (2003)
 JV0603
 JV0603'RECOVERY NOTE BY US POWER SQUADRON 2003 (DRB)
 JV0603'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0300 ***********************************************************************
 JV0300  DESIGNATION -  J 122
 JV0300  PID         -  JV0300
 JV0300  STATE/COUNTY-  MD/QUEEN ANNES
 JV0300  COUNTRY     -  US
 JV0300  USGS QUAD   -  CENTREVILLE (2017)
 JV0300
 JV0300                         *CURRENT SURVEY CONTROL
 JV0300  ______________________________________________________________________
 JV0300* NAD 83(1986) POSITION- 39 02 42.     (N) 076 03 56.     (W)   SCALED
 JV0300* NAVD 88 ORTHO HEIGHT -    18.242 (meters)       59.85  (feet) ADJUSTED
 JV0300  ______________________________________________________________________
 JV0300  GEOID HEIGHT    -        -33.817 (meters)                     GEOID18
 JV0300  DYNAMIC HEIGHT  -         18.233 (meters)       59.82  (feet) COMP
 JV0300  MODELED GRAVITY -    980,088.1   (mgal)                       NAVD 88
 JV0300
 JV0300  VERT ORDER      -  FIRST     CLASS II
 JV0300
 JV0300.The horizontal coordinates were scaled from a map and have
 JV0300.an estimated accuracy of +/- 6 seconds.
 JV0300
 JV0300.The orthometric height was determined by differential leveling and
 JV0300.adjusted by the NATIONAL GEODETIC SURVEY
 JV0300.in June 1991.
 JV0300
 JV0300.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0300.GEOID18 height accuracy estimate available here.
 JV0300
 JV0300.Click photographs - Photos may exist for this station.
 JV0300
 JV0300.The dynamic height is computed by dividing the NAVD 88
 JV0300.geopotential number by the normal gravity value computed on the
 JV0300.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0300.degrees latitude (g = 980.6199 gals.).
 JV0300
 JV0300.The modeled gravity was interpolated from observed gravity values.
 JV0300
 JV0300;                    North         East    Units  Estimated Accuracy
 JV0300;SPC MD       -   153,420.      480,890.      MT  (+/- 180 meters Scaled)
 JV0300
 JV0300_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ077223(NAD 83)
 JV0300
 JV0300                          SUPERSEDED SURVEY CONTROL
 JV0300
 JV0300  NGVD 29 (11/26/84)   18.479  (m)           60.63   (f) ADJUSTED    1 2
 JV0300
 JV0300.Superseded values are not recommended for survey control.
 JV0300
 JV0300.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0300.See file dsdata.pdf to determine how the superseded data were derived.
 JV0300
 JV0300_MARKER: DB = BENCH MARK DISK
 JV0300_SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE
 JV0300_SP_SET: WALL
 JV0300_STAMPING: J 122 1971
 JV0300_MARK LOGO: CGS
 JV0300_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV0300+STABILITY: SURFACE MOTION
 JV0300
 JV0300  HISTORY     - Date     Condition        Report By
 JV0300  HISTORY     - 1971     MONUMENTED       NGS
 JV0300  HISTORY     - 20020224 MARK NOT FOUND   USPSQD
 JV0300
 JV0300                          STATION DESCRIPTION
 JV0300
 JV0300'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0300'AT CENTREVILLE.
 JV0300'AT CENTREVILLE, BETWEEN LIBERTY STREET AND COMMERCE STREET, AT THE
 JV0300'NORTH CORNER OF THE COURTHOUSE, SET IN THE TOP OF A CONCRETE
 JV0300'WALL ON THE NORTHEAST SIDE OF THE STEPS LEADING TO THE BASEMENT
 JV0300'OF THE COURTHOUSE, NEAR THE NORTH CORNER OF THE NORTHEAST WING
 JV0300'OF THE COURTHOUSE, 115 FEET SOUTHEAST OF THE CENTER LINE OF U.S.
 JV0300'HIGHWAY 213 (LIBERTY STREET), 49.8 FEET SOUTHWEST OF THE CENTER
 JV0300'LINE OF BROADWAY STREET, 8.3 FEET NORTH OF THE NORTH CORNER OF THE
 JV0300'NORTHEAST WING OF THE COURTHOUSE AND 1/2 FOOT ABOVE THE LEVEL OF
 JV0300'THE GROUND.
 JV0300
 JV0300                          STATION RECOVERY (2002)
 JV0300
 JV0300'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV0300'IMPRESSION OF DISK IN TOP OF REFERENCED CONCRETE WALL REMAINS. CENTER
 JV0300'POST OF DISK REMAINS. DISK APPEARS TO HAVE BEEN CHISELED OFF.
 JV0300'SEE JV 4015 FOR RESET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV4015 ***********************************************************************
 JV4015  DESIGNATION -  J 122 RESET
 JV4015  PID         -  JV4015
 JV4015  STATE/COUNTY-  MD/QUEEN ANNES
 JV4015  COUNTRY     -  US
 JV4015  USGS QUAD   -  CENTREVILLE (2017)
 JV4015
 JV4015                         *CURRENT SURVEY CONTROL
 JV4015  ______________________________________________________________________
 JV4015* NAD 83(1986) POSITION- 39 02 42.     (N) 076 03 56.     (W)   SCALED
 JV4015* NAVD 88 ORTHO HEIGHT -    18.43  (meters)       60.5   (feet) RESET
 JV4015  ______________________________________________________________________
 JV4015  GEOID HEIGHT    -        -33.817 (meters)                     GEOID18
 JV4015  VERT ORDER      -  THIRD
 JV4015
 JV4015.The horizontal coordinates were scaled from a map and have
 JV4015.an estimated accuracy of +/- 6 seconds.
 JV4015
 JV4015.The orthometric height was computed from unverified reset data.
 JV4015
 JV4015.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV4015.GEOID18 height accuracy estimate available here.
 JV4015
 JV4015.Click photographs - Photos may exist for this station.
 JV4015
 JV4015;                    North         East    Units  Estimated Accuracy
 JV4015;SPC MD       -   153,420.      480,890.      MT  (+/- 180 meters Scaled)
 JV4015
 JV4015_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ077223(NAD 83)
 JV4015
 JV4015                          SUPERSEDED SURVEY CONTROL
 JV4015
 JV4015  NGVD 29 (??/??/??)   18.66   (m)           61.2    (f) RESET       3  
 JV4015
 JV4015.Superseded values are not recommended for survey control.
 JV4015
 JV4015.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV4015.See file dsdata.pdf to determine how the superseded data were derived.
 JV4015
 JV4015_MARKER: DV = VERTICAL CONTROL DISK
 JV4015_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 JV4015_SP_SET: WALKWAY
 JV4015_STAMPING: J 122 RESET 1977
 JV4015_MARK LOGO: NGS
 JV4015_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 JV4015
 JV4015  HISTORY     - Date     Condition        Report By
 JV4015  HISTORY     - 1977     MONUMENTED       NGS
 JV4015  HISTORY     - 20020224 MARK NOT FOUND   USPSQD
 JV4015
 JV4015                          STATION DESCRIPTION
 JV4015
 JV4015'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
 JV4015'AT CENTREVILLE.
 JV4015'AT CENTREVILLE, BETWEEN LIBERTY STREET AND COMMERCE STREET, AT THE
 JV4015'NORTH CORNER OF THE COURTHOUSE, SET IN THE NORTHEAST END OF A
 JV4015'WALKWAY NEAR THE NORTH CORNER OF THE NORTHEAST WING OF THE
 JV4015'COURTHOUSE, 122 FEET SOUTHEAST OF THE CENTER OF US HIGHWAY 213
 JV4015'(LIBERTY STREET), 60 FEET SOUTHWEST OF THE CENTER OF BROADWAY
 JV4015'STREET, 6.5 FEET SOUTHWEST OF THE NORTH CORNER OF THE NORTHEAST WING
 JV4015'OF THE COURTHOUSE, 29 FEET EAST OF THE NORTHWEST CORNER AND 16.8 FEET
 JV4015'SOUTHEAST OF A LAMP POST AT THE SOUTHWEST END OF THE STEPS LEADING
 JV4015'TO THE BASEMENT OF THE COURTHOUSE.  MARK IS .5 FT ABOVE THE ROAD.
 JV4015
 JV4015                          STATION RECOVERY (2002)
 JV4015
 JV4015'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 JV4015'MARK IS BELIEVED TO BE UNDER A TAR CAP AROUND THE REFERENCED WALKWAY,
 JV4015'WHICH HAS BEEN SEALED TO PREVENT WATER INTRUSION INTO COURTHOUSE
 JV4015'FOUNDATION.  METAL DETECTOR INDICATES POSITIVE.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0833 ***********************************************************************
 HV0833  DESIGNATION -  J 123
 HV0833  PID         -  HV0833
 HV0833  STATE/COUNTY-  MD/PRINCE GEORGES
 HV0833  COUNTRY     -  US
 HV0833  USGS QUAD   -  BRANDYWINE (2016)
 HV0833
 HV0833                         *CURRENT SURVEY CONTROL
 HV0833  ______________________________________________________________________
 HV0833* NAD 83(1986) POSITION- 38 41 10.2    (N) 076 52 21.4    (W)   HD_HELD2
 HV0833* NAVD 88 ORTHO HEIGHT -    68.739 (meters)      225.52  (feet) ADJUSTED
 HV0833  ______________________________________________________________________
 HV0833  GEOID HEIGHT    -        -32.856 (meters)                     GEOID18
 HV0833  DYNAMIC HEIGHT  -         68.699 (meters)      225.39  (feet) COMP
 HV0833  MODELED GRAVITY -    980,049.9   (mgal)                       NAVD 88
 HV0833
 HV0833  VERT ORDER      -  FIRST     CLASS II
 HV0833
 HV0833.The horizontal coordinates were established by autonomous hand held GPS
 HV0833.observations and have an estimated accuracy of +/- 10 meters.
 HV0833
 HV0833.The orthometric height was determined by differential leveling and
 HV0833.adjusted by the NATIONAL GEODETIC SURVEY
 HV0833.in June 1991.
 HV0833
 HV0833.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0833.GEOID18 height accuracy estimate available here.
 HV0833
 HV0833.Click photographs - Photos may exist for this station.
 HV0833
 HV0833.The dynamic height is computed by dividing the NAVD 88
 HV0833.geopotential number by the normal gravity value computed on the
 HV0833.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0833.degrees latitude (g = 980.6199 gals.).
 HV0833
 HV0833.The modeled gravity was interpolated from observed gravity values.
 HV0833
 HV0833;                    North         East    Units  Estimated Accuracy
 HV0833;SPC MD       -   113,176.      411,083.      MT  (+/- 10 meters HH2 GPS)
 HV0833
 HV0833_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH3712783615(NAD 83)
 HV0833
 HV0833                          SUPERSEDED SURVEY CONTROL
 HV0833
 HV0833  NGVD 29 (11/26/84)   68.966  (m)          226.27   (f) ADJUSTED    1 2
 HV0833
 HV0833.Superseded values are not recommended for survey control.
 HV0833
 HV0833.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0833.See file dsdata.pdf to determine how the superseded data were derived.
 HV0833
 HV0833_MARKER: DB = BENCH MARK DISK
 HV0833_SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC.
 HV0833_SP_SET: CULVERT
 HV0833_STAMPING: J 123 1971
 HV0833_MARK LOGO: CGS
 HV0833_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0833_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0833+SATELLITE: SATELLITE OBSERVATIONS - July 26, 2004
 HV0833
 HV0833  HISTORY     - Date     Condition        Report By
 HV0833  HISTORY     - 1971     MONUMENTED       NGS
 HV0833  HISTORY     - 1975     GOOD             NGS
 HV0833  HISTORY     - 20040726 GOOD             GEOCAC
 HV0833
 HV0833                          STATION DESCRIPTION
 HV0833
 HV0833'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0833'1 MI S FROM TB.
 HV0833'ABOUT 1.0 MILE SOUTH ALONG U.S. HIGHWAY 301 FROM THE INTERSECTION
 HV0833'OF STATE HIGHWAY 381 AT TB, 0.4 MILE SOUTH OF THE JUNCTION OF
 HV0833'STATE HIGHWAY 5, 0.65 MILE SOUTH OF A BRIDGE CARRYING THE SOUTHBOUND
 HV0833'LANE OF US HIGHWAY 301 OVER STATE HIGHWAY 5, ON THE TOP OF THE
 HV0833'NORTHEAST HEADWALL FOR A 30 INCH PIPE CULVERT, 61 FEET WEST OF
 HV0833'THE CENTER LINE OF THE SOUTHBOUND LANE OF U.S. HIGHWAY 301, 168
 HV0833'FEET NORTHEAST OF THE NORTHWEST CORNER OF A BP GAS STATION,
 HV0833'AND ABOUT 3 FEET BELOW THE LEVEL OF THE HIGHWAY.
 HV0833
 HV0833                          STATION RECOVERY (1975)
 HV0833
 HV0833'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975
 HV0833'NOTE-- THE BP GAS STATION IS NOW AN AMOCO GAS STATION.
 HV0833
 HV0833                          STATION RECOVERY (2004)
 HV0833
 HV0833'RECOVERY NOTE BY GEOCACHING 2004 (WD)
 HV0833'THE AMOCO GAS STATION IS NOW A CITGO STATION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7767 ***********************************************************************
 HV7767  DESIGNATION -  J 124
 HV7767  PID         -  HV7767
 HV7767  STATE/COUNTY-  MD/DORCHESTER
 HV7767  COUNTRY     -  US
 HV7767  USGS QUAD   -  TAYLORS ISLAND (2016)
 HV7767
 HV7767                         *CURRENT SURVEY CONTROL
 HV7767  ______________________________________________________________________
 HV7767* NAD 83(1986) POSITION- 38 27 25.3    (N) 076 15 29.3    (W)   HD_HELD2
 HV7767* NAVD 88 ORTHO HEIGHT -     0.677 (meters)        2.22  (feet) ADJUSTED
 HV7767  ______________________________________________________________________
 HV7767  GEOID HEIGHT    -        -34.753 (meters)                     GEOID18
 HV7767  DYNAMIC HEIGHT  -          0.676 (meters)        2.22  (feet) COMP
 HV7767  MODELED GRAVITY -    980,025.4   (mgal)                       NAVD 88
 HV7767
 HV7767  VERT ORDER      -  FIRST     CLASS II
 HV7767
 HV7767.The horizontal coordinates were established by autonomous hand held GPS
 HV7767.observations and have an estimated accuracy of +/- 10 meters.
 HV7767
 HV7767.The orthometric height was determined by differential leveling and
 HV7767.adjusted by the NATIONAL GEODETIC SURVEY
 HV7767.in June 1991.
 HV7767
 HV7767.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7767.GEOID18 height accuracy estimate available here.
 HV7767
 HV7767.Click photographs - Photos may exist for this station.
 HV7767
 HV7767.The dynamic height is computed by dividing the NAVD 88
 HV7767.geopotential number by the normal gravity value computed on the
 HV7767.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7767.degrees latitude (g = 980.6199 gals.).
 HV7767
 HV7767.The modeled gravity was interpolated from observed gravity values.
 HV7767
 HV7767;                    North         East    Units  Estimated Accuracy
 HV7767;SPC MD       -    87,996.      464,751.      MT  (+/- 10 meters HH2 GPS)
 HV7767
 HV7767_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH9022557274(NAD 83)
 HV7767
 HV7767                          SUPERSEDED SURVEY CONTROL
 HV7767
 HV7767  NGVD 29 (11/26/84)    0.911  (m)            2.99   (f) ADJUSTED    1 2
 HV7767
 HV7767.Superseded values are not recommended for survey control.
 HV7767
 HV7767.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7767.See file dsdata.pdf to determine how the superseded data were derived.
 HV7767
 HV7767_MARKER: DB = BENCH MARK DISK
 HV7767_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV7767+WITH SETTING: INTO GROUND
 HV7767_STAMPING: J 124 1971
 HV7767_MARK LOGO: CGS
 HV7767_PROJECTION: FLUSH
 HV7767_MAGNETIC: N = NO MAGNETIC MATERIAL
 HV7767_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7767+STABILITY: SURFACE MOTION
 HV7767_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV7767+SATELLITE: SATELLITE OBSERVATIONS - March 25, 2006
 HV7767
 HV7767  HISTORY     - Date     Condition        Report By
 HV7767  HISTORY     - 1971     MONUMENTED       NGS
 HV7767  HISTORY     - 19981022 GOOD             MDSHA
 HV7767  HISTORY     - 20060325 GOOD             USPSQD
 HV7767
 HV7767                          STATION DESCRIPTION
 HV7767
 HV7767'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV7767'1.45 MI SE FROM SMITHVILLE.
 HV7767'ABOUT 1.45 MILES SOUTHEAST ALONG SMITHVILLE ROAD FROM THE SMITHVILLE
 HV7767'CHURCH AT SMITHVILLE, 24 FEET SOUTHWEST OF THE CENTER LINE OF THE
 HV7767'ROAD, 6 FEET WEST OF A TELEPHONE POLE WITH A BRACE POLE, 2 FEET NORTH-
 HV7767'WEST OF THE BRACE POLE, 1.0 FOOT SOUTHEAST OF A METAL WITNESS POST,
 HV7767'AND ON THE TOP OF A 4-FOOT SECTION OF COPPER COATED ROD THAT IS
 HV7767'ATTACHED TO A METAL BASE PLATE. THE DISK PROJECTS 1 INCH ABOVE THE
 HV7767'GROUND AND IS PROTECTED BY A 4-INCH METAL PIPE PROJECTING 1 INCH.
 HV7767
 HV7767                          STATION RECOVERY (1998)
 HV7767
 HV7767'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1998 (SFK)
 HV7767'THE MARK IS LOCATED ABOUT 4.0 MI (6.44 KM) NORTH-NORTHWEST OF GOLDEN
 HV7767'HILL, 2.4 MI (3.86 KM) EAST-SOUTHEAST OF TAYLORS ISLAND, AND 1.45
 HV7767'MILES (2.33 KM) SOUTHEAST OF SMITHVILLE.
 HV7767'
 HV7767'TO REACH FROM THE JUNCTION OF STATE HIGHWAYS 16 AND 335 IN CHURCH
 HV7767'CREEK, GO SOUTHWEST ALONG STATE HIGHWAY 16 FOR 8.34 MI (13.42 KM) TO A
 HV7767'PAVED ROAD ON THE LEFT.  TURN LEFT AND GO SOUTHEAST ON SMITHVILLE ROAD
 HV7767'FOR 1.90 MILES (3.06 KM) TO A TELEPHONE POLE WITH A BRACE POLE AND THE
 HV7767'MARK ON THE RIGHT.
 HV7767'
 HV7767'IT IS 24.2 FEET (7.4 M) SOUTHWEST OF THE CENTER LINE OF SMITHVILLE
 HV7767'ROAD, 6.4 FEET (2.0 M) WEST OF TELEPHONE POLE NUMBER 596, 126.2 FEET
 HV7767'(38.5 M) SOUTH OF A POWER POLE WITH NO NUMBERS, 7.8 FEET (2.4 M)
 HV7767'SOUTHWEST OF THE CENTER OF A DITCH AND 2.2 FEET (0.7 M) NORTHEAST OF A
 HV7767'CARSONITE WITNESS POST.
 HV7767
 HV7767                          STATION RECOVERY (2006)
 HV7767
 HV7767'RECOVERY NOTE BY US POWER SQUADRON 2006 (JCH)
 HV7767'CARSONITE WITTNESS POST IS BROKEN.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV0515 ***********************************************************************
 JV0515  DESIGNATION -  J 125
 JV0515  PID         -  JV0515
 JV0515  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV0515  COUNTRY     -  US
 JV0515  USGS QUAD   -  GIBSON ISLAND (2017)
 JV0515
 JV0515                         *CURRENT SURVEY CONTROL
 JV0515  ______________________________________________________________________
 JV0515* NAD 83(1986) POSITION- 39 00 06.     (N) 076 28 54.     (W)   SCALED
 JV0515* NAVD 88 ORTHO HEIGHT -    25.550 (meters)       83.83  (feet) ADJUSTED
 JV0515  ______________________________________________________________________
 JV0515  GEOID HEIGHT    -        -33.324 (meters)                     GEOID18
 JV0515  DYNAMIC HEIGHT  -         25.535 (meters)       83.78  (feet) COMP
 JV0515  MODELED GRAVITY -    980,073.8   (mgal)                       NAVD 88
 JV0515
 JV0515  VERT ORDER      -  FIRST     CLASS I
 JV0515
 JV0515.The horizontal coordinates were scaled from a map and have
 JV0515.an estimated accuracy of +/- 6 seconds.
 JV0515
 JV0515.The orthometric height was determined by differential leveling and
 JV0515.adjusted by the NATIONAL GEODETIC SURVEY
 JV0515.in June 1991.
 JV0515
 JV0515.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV0515.GEOID18 height accuracy estimate available here.
 JV0515
 JV0515.Click photographs - Photos may exist for this station.
 JV0515
 JV0515.The dynamic height is computed by dividing the NAVD 88
 JV0515.geopotential number by the normal gravity value computed on the
 JV0515.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV0515.degrees latitude (g = 980.6199 gals.).
 JV0515
 JV0515.The modeled gravity was interpolated from observed gravity values.
 JV0515
 JV0515;                    North         East    Units  Estimated Accuracy
 JV0515;SPC MD       -   148,320.      444,900.      MT  (+/- 180 meters Scaled)
 JV0515
 JV0515_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ716180(NAD 83)
 JV0515
 JV0515                          SUPERSEDED SURVEY CONTROL
 JV0515
 JV0515  NGVD 29 (11/26/84)   25.793  (m)           84.62   (f) ADJUSTED    1 1
 JV0515
 JV0515.Superseded values are not recommended for survey control.
 JV0515
 JV0515.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV0515.See file dsdata.pdf to determine how the superseded data were derived.
 JV0515
 JV0515_MARKER: DB = BENCH MARK DISK
 JV0515_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV0515_STAMPING: J 125 1971
 JV0515_MARK LOGO: CGS
 JV0515_PROJECTION: RECESSED
 JV0515_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV0515_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV0515_ROD/PIPE-DEPTH: 6.1 meters
 JV0515
 JV0515  HISTORY     - Date     Condition        Report By
 JV0515  HISTORY     - 1971     MONUMENTED       NGS
 JV0515  HISTORY     - 19911210 GOOD             MDSHA
 JV0515  HISTORY     - 20020122 MARK NOT FOUND   USPSQD
 JV0515
 JV0515                          STATION DESCRIPTION
 JV0515
 JV0515'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JV0515'0.6 MI NW FROM ANNAPOLIS.
 JV0515'ABOUT 0.6 MILE NORTHWEST ALONG STATE HIGHWAY 450 FROM THE NORTHEAST
 JV0515'END OF THE HIGHWAY BRIDGE OVER THE SEVERN RIVER AT ANNAPOLIS,
 JV0515'ABOUT 0.1 MILE NORTHWEST OF THE JUNCTION OF RITCHIE ROAD (STATE
 JV0515'HIGHWAY 179), AT THE SOUTH CORNER OF THE GROUNDS FOR THE CHURCH OF
 JV0515'JESUS CHRIST OF LATTER DAY SAINT, 41 FEET NORTHEAST OF THE
 JV0515'CENTER LINE OF THE NORTHWEST BOUND LANE OF THE HIGHWAY, 99 FEET
 JV0515'SOUTHEAST OF THE SOUTHEAST EDGE OF THE CONCRETE SIDEWALK LEADING
 JV0515'TO THE SOUTHWEST (MAIN) ENTRANCE TO THE CHURCH BUILDING, 76 FEET
 JV0515'SOUTHWEST OF THE SOUTH BRICK CORNER OF THE CHURCH BUILDING, 4 1/2
 JV0515'FEET SOUTHEAST OF POWER LINE POLE NO. 393360, A DISK ON THE TOP OF
 JV0515'A COPPER COATED STEEL ROD 1 INCH BELOW THE LEVEL OF THE GROUND AND
 JV0515'ENCASED IN A 5 INCH STEEL PIPE THAT IS FLUSH WITH THE GROUND.  THE
 JV0515'ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 20 FEET.
 JV0515
 JV0515                          STATION RECOVERY (1991)
 JV0515
 JV0515'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1991
 JV0515'RECOVERED IN GOOD CONDITION.
 JV0515
 JV0515                          STATION RECOVERY (2002)
 JV0515
 JV0515'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV0515'LOCATION PROBED AND SWEPT WITH METAL DETECTOR
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0129 ***********************************************************************
 HV0129  DESIGNATION -  J 126
 HV0129  PID         -  HV0129
 HV0129  STATE/COUNTY-  MD/QUEEN ANNES
 HV0129  COUNTRY     -  US
 HV0129  USGS QUAD   -  WYE MILLS (2016)
 HV0129
 HV0129                         *CURRENT SURVEY CONTROL
 HV0129  ______________________________________________________________________
 HV0129* NAD 83(2011) POSITION- 38 58 09.00528(N) 076 07 10.02509(W)   ADJUSTED
 HV0129* NAD 83(2011) ELLIP HT-   -13.431 (meters)        (06/27/12)   ADJUSTED
 HV0129* NAD 83(2011) EPOCH   -  2010.00
 HV0129* NAVD 88 ORTHO HEIGHT -    20.571 (meters)       67.49  (feet) ADJUSTED
 HV0129  ______________________________________________________________________
 HV0129  GEOID HEIGHT    -        -34.006 (meters)                     GEOID18
 HV0129  NAD 83(2011) X  -  1,191,208.753 (meters)                     COMP
 HV0129  NAD 83(2011) Y  - -4,820,468.466 (meters)                     COMP
 HV0129  NAD 83(2011) Z  -  3,989,647.977 (meters)                     COMP
 HV0129  LAPLACE CORR    -         -4.39  (seconds)                    DEFLEC18
 HV0129  DYNAMIC HEIGHT  -         20.559 (meters)       67.45  (feet) COMP
 HV0129  MODELED GRAVITY -    980,073.4   (mgal)                       NAVD 88
 HV0129
 HV0129  VERT ORDER      -  FIRST     CLASS II
 HV0129
 HV0129  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0129  Standards:
 HV0129         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0129            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0129  -------------------------------------------------------------------
 HV0129  NETWORK    2.04   3.06           0.73   0.92   1.56     -0.03547520
 HV0129  -------------------------------------------------------------------
 HV0129  Click here for local accuracies and other accuracy information.
 HV0129
 HV0129.The horizontal coordinates were established by GPS observations
 HV0129.and adjusted by the National Geodetic Survey in June 2012.
 HV0129
 HV0129.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0129.been affixed to the stable North American tectonic plate. See 
 HV0129.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0129
 HV0129.The horizontal coordinates are valid at the epoch date displayed above
 HV0129.which is a decimal equivalence of Year/Month/Day.
 HV0129
 HV0129.The orthometric height was determined by differential leveling and
 HV0129.adjusted by the NATIONAL GEODETIC SURVEY
 HV0129.in June 1991.
 HV0129
 HV0129.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0129.GEOID18 height accuracy estimate available here.
 HV0129
 HV0129.Click photographs - Photos may exist for this station.
 HV0129
 HV0129.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0129
 HV0129.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0129
 HV0129.The ellipsoidal height was determined by GPS observations
 HV0129.and is referenced to NAD 83.
 HV0129
 HV0129.The dynamic height is computed by dividing the NAVD 88
 HV0129.geopotential number by the normal gravity value computed on the
 HV0129.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0129.degrees latitude (g = 980.6199 gals.).
 HV0129
 HV0129.The modeled gravity was interpolated from observed gravity values.
 HV0129
 HV0129. The following values were computed from the NAD 83(2011) position.
 HV0129
 HV0129;                    North         East     Units Scale Factor Converg.
 HV0129;SPC MD       -   144,951.591   476,306.941   MT  0.99995117   +0 33 09.6
 HV0129;SPC MD       -   475,562.01  1,562,683.69   sFT  0.99995117   +0 33 09.6
 HV0129;UTM  18      - 4,313,951.004   403,021.380   MT  0.99971581   -0 42 14.7
 HV0129
 HV0129!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0129!SPC MD       -   1.00000211  x   0.99995117  =   0.99995328
 HV0129!UTM  18      -   1.00000211  x   0.99971581  =   0.99971792
 HV0129
 HV0129_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ0302113951(NAD 83)
 HV0129
 HV0129                          SUPERSEDED SURVEY CONTROL
 HV0129
 HV0129  NAD 83(2007)-  38 58 09.00551(N)    076 07 10.02583(W) AD(2002.00) 1
 HV0129  ELLIP H (04/02/09)  -13.399  (m)                       GP(2002.00) 4 1
 HV0129  NAD 83(1991)-  38 58 09.00557(N)    076 07 10.02611(W) AD(       ) 1
 HV0129  ELLIP H (10/15/07)  -13.398  (m)                       GP(       ) 4 1
 HV0129  NAVD 88              20.57   (m)           67.5    (f) LEVELING    3  
 HV0129  NGVD 29 (11/26/84)   20.803  (m)           68.25   (f) ADJUSTED    1 2
 HV0129
 HV0129.Superseded values are not recommended for survey control.
 HV0129
 HV0129.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0129.See file dsdata.pdf to determine how the superseded data were derived.
 HV0129
 HV0129_MARKER: DB = BENCH MARK DISK
 HV0129_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0129+WITH SETTING: INTO GROUND
 HV0129_STAMPING: J 126 1971
 HV0129_MARK LOGO: CGS
 HV0129_PROJECTION: RECESSED 15 CENTIMETERS
 HV0129_MAGNETIC: I = MARKER IS A STEEL ROD
 HV0129_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
 HV0129_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV0129+SATELLITE: SATELLITE OBSERVATIONS - November 24, 2025
 HV0129
 HV0129  HISTORY     - Date     Condition        Report By
 HV0129  HISTORY     - 1971     MONUMENTED       NGS
 HV0129  HISTORY     - 1974     GOOD             NGS
 HV0129  HISTORY     - 19991211 MARK NOT FOUND   USPSQD
 HV0129  HISTORY     - 20010310 GOOD             USPSQD
 HV0129  HISTORY     - 20020626 GOOD             MDSHA
 HV0129  HISTORY     - 20061114 GOOD             USPSQD
 HV0129  HISTORY     - 20251124 GOOD             PROFLN
 HV0129
 HV0129                          STATION DESCRIPTION
 HV0129
 HV0129'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0129'2.5 MI SOUTHEAST FROM QUEENSTOWN.  ABOUT 1.2 MILES SOUTHEAST ALONG
 HV0129'STATE HIGHWAY 456 FROM THE POST OFFICE AT QUEENSTOWN, THENCE 1.3 MILES
 HV0129'SOUTHEAST ALONG U.S. HIGHWAY 50, 0.9 MILE SOUTHEAST OF ST PETERS
 HV0129'CHURCH, AT THE JUNCTION OF A BLACK TOP ROAD LEADING SOUTHWEST TO WYE
 HV0129'ISLAND, 63.2 FEET SOUTHWEST OF THE CENTERLINE OF THE EASTBOUND LANE OF
 HV0129'THE HIGHWAY, 53 FEET SOUTHEAST OF THE CENTERLINE OF THE BLACK TOP
 HV0129'ROAD, 31 1/2 FEET EAST OF A HISTORIC POINT MARKER, 24 FEET WEST OF
 HV0129'POWER LINE POLE WITNESS POST, 3 FEET ABOVE THE LEVEL OF THE HIGHWAY,
 HV0129'AND ON THE TOP OF A 4 FOOT COPPER COATED STEEL ROD THAT IS ATTACHED TO
 HV0129'A METAL BASE PLATE.  THE DISK IS 2 INCHES BELOW THE LEVEL OF THE
 HV0129'GROUND AND ENCASED IN A 4 INCH IRON PIPE THAT IS ONE INCH BELOW THE
 HV0129'LEVEL OF THE GROUND.  NOTE-PIPE IS 3 INCHES BELOW GROUND LEVEL.
 HV0129
 HV0129                          STATION RECOVERY (1974)
 HV0129
 HV0129'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974
 HV0129'RECOVERED IN GOOD CONDITION.
 HV0129
 HV0129                          STATION RECOVERY (1999)
 HV0129
 HV0129'RECOVERY NOTE BY US POWER SQUADRON 1999
 HV0129'MARK NOT FOUND.
 HV0129
 HV0129                          STATION RECOVERY (2001)
 HV0129
 HV0129'RECOVERY NOTE BY US POWER SQUADRON 2001 (KNP)
 HV0129'AT THE JUNCTION OF US 50 AND CARMICHAEL RD, 31 1/2 FEET EAST OF A
 HV0129'HISTORIC POINT MARKER, 24 FEET WEST OF POWER LINE POLE NO. 73/32219
 HV0129'DPL. WITNESS POST NOT FOUND. REMAINING DESCRIPTION GOOD.
 HV0129
 HV0129                          STATION RECOVERY (2002)
 HV0129
 HV0129'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 HV0129'RECOVERED AS DESCRIBED.
 HV0129
 HV0129                          STATION RECOVERY (2006)
 HV0129
 HV0129'RECOVERY NOTE BY US POWER SQUADRON 2006 (NNH)
 HV0129'RECOVERED IN GOOD CONDITION.
 HV0129
 HV0129                          STATION RECOVERY (2025)
 HV0129
 HV0129'RECOVERY NOTE BY PROFESSIONAL LAND SURVEYOR 2025 (JRO)
 HV0129'THE MARK IS ON THE LINE BETWEEN THE HISTORICAL MARKER AND POLE
 HV0129'32219/1526_ (MISSING LAST DIGIT) WITH TRANSFORMER, 31 FT (9.4 M) EAST
 HV0129'OF THE MARKER AND 22 FT (6.7 M) WEST OF THE POLE, 29 FT (8.8 M)
 HV0129'SOUTHWEST OF A LARGE LIGHT POLE, 26 FT (7.9 M) SOUTHEAST OF A STOP
 HV0129'SIGN, 13 FT (4.0 M) SOUTHWEST OF THE MAIN OVERHEAD POWER LINE, PLACED
 HV0129'UNDER A 6 INCH (15 CM) ROUND VALVE BOX.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0107 ***********************************************************************
 HV0107  DESIGNATION -  J 127
 HV0107  PID         -  HV0107
 HV0107  STATE/COUNTY-  MD/TALBOT
 HV0107  COUNTRY     -  US
 HV0107  USGS QUAD   -  EASTON (2016)
 HV0107
 HV0107                         *CURRENT SURVEY CONTROL
 HV0107  ______________________________________________________________________
 HV0107* NAD 83(2011) POSITION- 38 47 53.90148(N) 076 03 37.52483(W)   ADJUSTED
 HV0107* NAD 83(2011) ELLIP HT-   -16.078 (meters)        (06/27/12)   ADJUSTED
 HV0107* NAD 83(2011) EPOCH   -  2010.00
 HV0107* NAVD 88 ORTHO HEIGHT -    18.571 (meters)       60.93  (feet) ADJUSTED
 HV0107  ______________________________________________________________________
 HV0107  GEOID HEIGHT    -        -34.644 (meters)                     GEOID18
 HV0107  NAD 83(2011) X  -  1,199,042.186 (meters)                     COMP
 HV0107  NAD 83(2011) Y  - -4,830,792.992 (meters)                     COMP
 HV0107  NAD 83(2011) Z  -  3,974,881.285 (meters)                     COMP
 HV0107  LAPLACE CORR    -         -3.17  (seconds)                    DEFLEC18
 HV0107  DYNAMIC HEIGHT  -         18.560 (meters)       60.89  (feet) COMP
 HV0107  MODELED GRAVITY -    980,038.7   (mgal)                       NAVD 88
 HV0107  OBS GRAVITY     -    980,036.6   (mgal)                       GRAV_OBS
 HV0107
 HV0107  VERT ORDER      -  FIRST     CLASS II
 HV0107
 HV0107  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 HV0107  Standards:
 HV0107         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 HV0107            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 HV0107  -------------------------------------------------------------------
 HV0107  NETWORK    1.04   1.71           0.41   0.44   0.87     -0.07581472
 HV0107  -------------------------------------------------------------------
 HV0107  Click here for local accuracies and other accuracy information.
 HV0107
 HV0107.The horizontal coordinates were established by GPS observations
 HV0107.and adjusted by the National Geodetic Survey in June 2012.
 HV0107
 HV0107.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 HV0107.been affixed to the stable North American tectonic plate. See 
 HV0107.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 HV0107
 HV0107.The horizontal coordinates are valid at the epoch date displayed above
 HV0107.which is a decimal equivalence of Year/Month/Day.
 HV0107
 HV0107.The orthometric height was determined by differential leveling and
 HV0107.adjusted by the NATIONAL GEODETIC SURVEY
 HV0107.in June 1991.
 HV0107
 HV0107.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0107.GEOID18 height accuracy estimate available here.
 HV0107
 HV0107.Click photographs - Photos may exist for this station.
 HV0107
 HV0107.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 HV0107
 HV0107.The Laplace correction was computed from DEFLEC18 derived deflections.
 HV0107
 HV0107.The ellipsoidal height was determined by GPS observations
 HV0107.and is referenced to NAD 83.
 HV0107
 HV0107.The dynamic height is computed by dividing the NAVD 88
 HV0107.geopotential number by the normal gravity value computed on the
 HV0107.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0107.degrees latitude (g = 980.6199 gals.).
 HV0107
 HV0107.The modeled gravity was interpolated from observed gravity values.
 HV0107
 HV0107.The observed gravity was obtained from relative gravimeter ties
 HV0107.to the IGSN71 gravity network.
 HV0107
 HV0107. The following values were computed from the NAD 83(2011) position.
 HV0107
 HV0107;                    North         East     Units Scale Factor Converg.
 HV0107;SPC MD       -   126,036.567   481,617.238   MT  0.99995076   +0 35 23.0
 HV0107;SPC MD       -   413,504.97  1,580,105.89   sFT  0.99995076   +0 35 23.0
 HV0107;UTM  18      - 4,294,928.743   407,914.800   MT  0.99970442   -0 39 52.2
 HV0107
 HV0107!             -  Elev Factor  x  Scale Factor =   Combined Factor
 HV0107!SPC MD       -   1.00000252  x   0.99995076  =   0.99995328
 HV0107!UTM  18      -   1.00000252  x   0.99970442  =   0.99970694
 HV0107
 HV0107_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH0791494928(NAD 83)
 HV0107
 HV0107                          SUPERSEDED SURVEY CONTROL
 HV0107
 HV0107  NAD 83(2007)-  38 47 53.90172(N)    076 03 37.52554(W) AD(2002.00) 1
 HV0107  ELLIP H (04/02/09)  -16.045  (m)                       GP(2002.00) 4 1
 HV0107  NAD 83(1991)-  38 47 53.90167(N)    076 03 37.52525(W) AD(       ) 1
 HV0107  ELLIP H (10/15/07)  -16.046  (m)                       GP(       ) 4 1
 HV0107  NAVD 88              18.57   (m)           60.9    (f) LEVELING    3  
 HV0107  NGVD 29 (11/26/84)   18.806  (m)           61.70   (f) ADJUSTED    1 2
 HV0107
 HV0107.Superseded values are not recommended for survey control.
 HV0107
 HV0107.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0107.See file dsdata.pdf to determine how the superseded data were derived.
 HV0107
 HV0107_MARKER: DB = BENCH MARK DISK
 HV0107_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0107_STAMPING: J 127 1971
 HV0107_MARK LOGO: CGS
 HV0107_MAGNETIC: O = OTHER; SEE DESCRIPTION
 HV0107_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0107_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV0107+SATELLITE: SATELLITE OBSERVATIONS - June 24, 2002
 HV0107
 HV0107  HISTORY     - Date     Condition        Report By
 HV0107  HISTORY     - 1971     MONUMENTED       NGS
 HV0107  HISTORY     - 19900607 GOOD             NGS
 HV0107  HISTORY     - 19991007 GOOD             MDSHA
 HV0107  HISTORY     - 20020222 GOOD             USPSQD
 HV0107  HISTORY     - 20020624 GOOD             MDSHA
 HV0107
 HV0107                          STATION DESCRIPTION
 HV0107
 HV0107'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0107'1.8 MI N FROM EASTON.
 HV0107'ABOUT 1.8 MILES NORTH ALONG U.S. HIGHWAY 50 FROM THE INTERSECTION
 HV0107'OF STATE HIGHWAY 331 AT EASTON, NEAR THE CROSSING OF THE PENN
 HV0107'CENTRAL RAILROAD, IN THE HIGHWAY MEDIAN, 118 FEET EAST OF THE
 HV0107'CENTER LINE OF THE WEST LANES OF THE HIGHWAY, 113 FEET WEST OF
 HV0107'THE CENTER LINE AND ACROSS THE RAILROAD TRACK FROM THE EAST
 HV0107'LANES OF THE HIGHWAY, 22.1 FEET NORTHWEST OF THE NORTHWEST RAIL
 HV0107'OF THE TRACK, 2 1/2 FEET NORTHEAST OF A TELEPHONE POLE, 1.3 FEET
 HV0107'SOUTHWEST OF A METAL WITNESS POST, ABOUT 1 FOOT BELOW THE LEVEL
 HV0107'OF THE HIGHWAY, AND IS A DISK ON THE TOP OF A COPPER COATED STEEL
 HV0107'ROD FLUSH WITH THE GROUND AND PROTECTED BY A 6 INCH METAL PIPE
 HV0107'THAT PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.  THE ROD WAS
 HV0107'DRIVEN TO REFUSAL AT A DEPTH OF 37 FEET.
 HV0107
 HV0107                          STATION RECOVERY (1990)
 HV0107
 HV0107'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
 HV0107'RECOVERED IN GOOD CONDITION.
 HV0107
 HV0107                          STATION RECOVERY (1999)
 HV0107
 HV0107'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1999 (SFK)
 HV0107'RECOVERED AS DESCRIBED.
 HV0107
 HV0107                          STATION RECOVERY (2002)
 HV0107
 HV0107'RECOVERY NOTE BY US POWER SQUADRON 2002 (JKW)
 HV0107'REFERENCED RAILROAD NOW ABANDONED, RAILS REMAIN, REFERENCED TELEPHONE
 HV0107'POLE DOES NOT EXIST. WITNESS POST DOES NOT EXIST.  MARK IS 207.5 FT S
 HV0107'OF AN UNMARKED TRANSFORMER POWER POLE IN THE HIGHWAY MEDIAN.
 HV0107'
 HV0107
 HV0107                          STATION RECOVERY (2002)
 HV0107
 HV0107'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (NLE)
 HV0107'RECOVERED AS DESCRIBED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0555 ***********************************************************************
 HV0555  DESIGNATION -  J 128
 HV0555  PID         -  HV0555
 HV0555  STATE/COUNTY-  MD/ST MARYS
 HV0555  COUNTRY     -  US
 HV0555  USGS QUAD   -  HOLLYWOOD (2016)
 HV0555
 HV0555                         *CURRENT SURVEY CONTROL
 HV0555  ______________________________________________________________________
 HV0555* NAD 83(1986) POSITION- 38 16 18.     (N) 076 36 34.     (W)   SCALED
 HV0555* NAVD 88 ORTHO HEIGHT -    34.834 (meters)      114.28  (feet) ADJUSTED
 HV0555  ______________________________________________________________________
 HV0555  GEOID HEIGHT    -        -33.991 (meters)                     GEOID18
 HV0555  DYNAMIC HEIGHT  -         34.812 (meters)      114.21  (feet) COMP
 HV0555  MODELED GRAVITY -    980,024.0   (mgal)                       NAVD 88
 HV0555
 HV0555  VERT ORDER      -  FIRST     CLASS II
 HV0555
 HV0555.The horizontal coordinates were scaled from a map and have
 HV0555.an estimated accuracy of +/- 6 seconds.
 HV0555
 HV0555.The orthometric height was determined by differential leveling and
 HV0555.adjusted by the NATIONAL GEODETIC SURVEY
 HV0555.in June 1991.
 HV0555
 HV0555.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0555.GEOID18 height accuracy estimate available here.
 HV0555
 HV0555.Click photographs - Photos may exist for this station.
 HV0555
 HV0555.The dynamic height is computed by dividing the NAVD 88
 HV0555.geopotential number by the normal gravity value computed on the
 HV0555.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0555.degrees latitude (g = 980.6199 gals.).
 HV0555
 HV0555.The modeled gravity was interpolated from observed gravity values.
 HV0555
 HV0555;                    North         East    Units  Estimated Accuracy
 HV0555;SPC MD       -    67,230.      434,180.      MT  (+/- 180 meters Scaled)
 HV0555
 HV0555_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH592371(NAD 83)
 HV0555
 HV0555                          SUPERSEDED SURVEY CONTROL
 HV0555
 HV0555  NGVD 29 (11/26/84)   35.074  (m)          115.07   (f) ADJUSTED    1 2
 HV0555
 HV0555.Superseded values are not recommended for survey control.
 HV0555
 HV0555.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0555.See file dsdata.pdf to determine how the superseded data were derived.
 HV0555
 HV0555_MARKER: DB = BENCH MARK DISK
 HV0555_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV0555_STAMPING: J 128 1971
 HV0555_MARK LOGO: CGS
 HV0555_PROJECTION: FLUSH
 HV0555_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV0555
 HV0555  HISTORY     - Date     Condition        Report By
 HV0555  HISTORY     - 1971     MONUMENTED       NGS
 HV0555
 HV0555                          STATION DESCRIPTION
 HV0555
 HV0555'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0555'2.2 MI SE FROM LEONARDTOWN.
 HV0555'ABOUT 0.1 MILE NORTH ALONG WASHINGTON STREET FROM THE COURTHOUSE
 HV0555'AT LEONARDTOWN, THENCE 2.15 MILES SOUTHEAST ALONG STATE HIGHWAY 5,
 HV0555'AT THE ENTRANCE TO THE ST MARYS COUNTY TECHNICAL CENTER, 1.3 FEET
 HV0555'NORTHWEST OF THE NORTHWEST END OF THE BRICK WALL WHICH IS 21 FEET
 HV0555'LONG ALONG THE SOUTHEAST SIDE OF THE ROAD LEADING TO THE CENTER,
 HV0555'22 FEET SOUTHEAST OF THE CENTER LINE OF THE ROAD, 84 FEET
 HV0555'SOUTHWEST OF THE CENTER LINE OF STATE HIGHWAY 5, 0.3 MILE SOUTHEAST
 HV0555'OF THE JUNCTION OF STATE HIGHWAY 244 LEADING SOUTHWEST, 1.3 FEET
 HV0555'SOUTHWEST OF THE WEST CORNER OF THE NORTHWEST END OF A 21-FOOT
 HV0555'LONG BRICKWALL, 1.5 FEET EAST OF A METAL WITNESS POST, 1 FOOT
 HV0555'BELOW THE LEVEL OF THE ROAD AND IS A DISK ON THE TOP OF A COPPER
 HV0555'COATED STEEL ROD FLUSH WITH THE GROUND AND PROTECTED BY A 6 INCH
 HV0555'IRON PIPE THAT IS FLUSH WITH THE GROUND.  THE ROD WAS DRIVEN TO A
 HV0555'DEPTH OF 16 FEET.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0526 ***********************************************************************
 HV0526  DESIGNATION -  J 129
 HV0526  PID         -  HV0526
 HV0526  STATE/COUNTY-  MD/ST MARYS
 HV0526  COUNTRY     -  US
 HV0526  USGS QUAD   -  CHARLOTTE HALL (2016)
 HV0526
 HV0526                         *CURRENT SURVEY CONTROL
 HV0526  ______________________________________________________________________
 HV0526* NAD 83(1986) POSITION- 38 23 20.     (N) 076 49 23.     (W)   SCALED
 HV0526* NAVD 88 ORTHO HEIGHT -    44.886 (meters)      147.26  (feet) ADJUSTED
 HV0526  ______________________________________________________________________
 HV0526  GEOID HEIGHT    -        -33.630 (meters)                     GEOID18
 HV0526  DYNAMIC HEIGHT  -         44.858 (meters)      147.17  (feet) COMP
 HV0526  MODELED GRAVITY -    980,007.5   (mgal)                       NAVD 88
 HV0526
 HV0526  VERT ORDER      -  FIRST     CLASS II
 HV0526
 HV0526.The horizontal coordinates were scaled from a map and have
 HV0526.an estimated accuracy of +/- 6 seconds.
 HV0526
 HV0526.The orthometric height was determined by differential leveling and
 HV0526.adjusted by the NATIONAL GEODETIC SURVEY
 HV0526.in June 1991.
 HV0526
 HV0526.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0526.GEOID18 height accuracy estimate available here.
 HV0526
 HV0526.Click photographs - Photos may exist for this station.
 HV0526
 HV0526.The dynamic height is computed by dividing the NAVD 88
 HV0526.geopotential number by the normal gravity value computed on the
 HV0526.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0526.degrees latitude (g = 980.6199 gals.).
 HV0526
 HV0526.The modeled gravity was interpolated from observed gravity values.
 HV0526
 HV0526;                    North         East    Units  Estimated Accuracy
 HV0526;SPC MD       -    80,190.      415,460.      MT  (+/- 180 meters Scaled)
 HV0526
 HV0526_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH407505(NAD 83)
 HV0526
 HV0526                          SUPERSEDED SURVEY CONTROL
 HV0526
 HV0526  NGVD 29 (11/26/84)   45.124  (m)          148.04   (f) ADJUSTED    1 2
 HV0526
 HV0526.Superseded values are not recommended for survey control.
 HV0526
 HV0526.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0526.See file dsdata.pdf to determine how the superseded data were derived.
 HV0526
 HV0526_MARKER: DB = BENCH MARK DISK
 HV0526_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0526+WITH SETTING: INTO GROUND
 HV0526_STAMPING: J 129 1971
 HV0526_MARK LOGO: CGS
 HV0526_PROJECTION: RECESSED 5 CENTIMETERS
 HV0526_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0526+STABILITY: SURFACE MOTION
 HV0526_ROD/PIPE-DEPTH: 1.2 meters
 HV0526
 HV0526  HISTORY     - Date     Condition        Report By
 HV0526  HISTORY     - 1971     MONUMENTED       NGS
 HV0526  HISTORY     - 19910320 GOOD             NGS
 HV0526
 HV0526                          STATION DESCRIPTION
 HV0526
 HV0526'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0526'3 MI NW FROM CHAPTICO.
 HV0526'ABOUT 3.0 MILES NORTHWEST ALONG STATE HIGHWAY 234 FROM THE POST
 HV0526'OFFICE AT CHAPTICO, NEAR THE JUNCTION OF A FARM ROAD LEADING
 HV0526'NORTHEAST, 59 FEET NORTHEAST OF THE CENTER LINE OF THE NEW
 HV0526'HIGHWAY, 69 FEET EAST OF THE APPROXIMATE CENTER OF THE JUNCTION
 HV0526'OF THE NEW HIGHWAY AND THE FARM ROAD, 32 FEET SOUTHEAST OF THE
 HV0526'CENTER LINE OF THE FARM ROAD, 75 FEET SOUTHWEST OF THE CENTER
 HV0526'LINE OF OLD HIGHWAY 234, 165 FEET SOUTHWEST OF THE SOUTHWEST
 HV0526'CORNER OF AN OLD FRAME HOUSE, 7 FEET NORTHWEST OF AN 18-INCH
 HV0526'OAK TREE, 8 1/2 FEET SOUTHEAST OF A 12 INCH OAK TREE, 1/2 FOOT
 HV0526'SOUTHWEST OF A METAL WITNESS POST, ABOUT 3 FEET ABOVE THE LEVEL
 HV0526'OF THE NEW HIGHWAY, A DISK ON THE TOP OF A 4 FOOT COPPER COATED
 HV0526'STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS
 HV0526'2 INCHES BELOW THE LEVEL OF THE GROUND AND ENCASED IN A 4 INCH
 HV0526'METAL PIPE THAT IS FLUSH WITH THE GROUND.
 HV0526
 HV0526                          STATION RECOVERY (1991)
 HV0526
 HV0526'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1991
 HV0526'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1688 ***********************************************************************
 JV1688  DESIGNATION -  J 13
 JV1688  PID         -  JV1688
 JV1688  STATE/COUNTY-  MD/CARROLL
 JV1688  COUNTRY     -  US
 JV1688  USGS QUAD   -  WESTMINSTER (2016)
 JV1688
 JV1688                         *CURRENT SURVEY CONTROL
 JV1688  ______________________________________________________________________
 JV1688* NAD 83(1986) POSITION- 39 34 06.     (N) 076 56 39.     (W)   SCALED
 JV1688* NAVD 88 ORTHO HEIGHT -   185.830 (meters)      609.68  (feet) ADJUSTED
 JV1688  ______________________________________________________________________
 JV1688  GEOID HEIGHT    -        -32.159 (meters)                     GEOID18
 JV1688  DYNAMIC HEIGHT  -        185.734 (meters)      609.36  (feet) COMP
 JV1688  MODELED GRAVITY -    980,109.0   (mgal)                       NAVD 88
 JV1688
 JV1688  VERT ORDER      -  SECOND    CLASS 0
 JV1688
 JV1688.The horizontal coordinates were scaled from a map and have
 JV1688.an estimated accuracy of +/- 6 seconds.
 JV1688
 JV1688.The orthometric height was determined by differential leveling and
 JV1688.adjusted by the NATIONAL GEODETIC SURVEY
 JV1688.in June 1991.
 JV1688
 JV1688.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1688.GEOID18 height accuracy estimate available here.
 JV1688
 JV1688.Click photographs - Photos may exist for this station.
 JV1688
 JV1688.The dynamic height is computed by dividing the NAVD 88
 JV1688.geopotential number by the normal gravity value computed on the
 JV1688.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1688.degrees latitude (g = 980.6199 gals.).
 JV1688
 JV1688.The modeled gravity was interpolated from observed gravity values.
 JV1688
 JV1688;                    North         East    Units  Estimated Accuracy
 JV1688;SPC MD       -   211,100.      404,800.      MT  (+/- 180 meters Scaled)
 JV1688
 JV1688_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ330816(NAD 83)
 JV1688
 JV1688                          SUPERSEDED SURVEY CONTROL
 JV1688
 JV1688  NGVD 29 (11/26/84)  186.030  (m)          610.33   (f) ADJUSTED    2 0
 JV1688
 JV1688.Superseded values are not recommended for survey control.
 JV1688
 JV1688.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1688.See file dsdata.pdf to determine how the superseded data were derived.
 JV1688
 JV1688_MARKER: DB = BENCH MARK DISK
 JV1688_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1688_STAMPING: J 13 1935
 JV1688_MARK LOGO: CGS
 JV1688_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1688+STABILITY: SURFACE MOTION
 JV1688
 JV1688  HISTORY     - Date     Condition        Report By
 JV1688  HISTORY     - 1935     MONUMENTED       CGS
 JV1688  HISTORY     - 1942     GOOD             CGS
 JV1688  HISTORY     - 1979     GOOD             LOCENG
 JV1688
 JV1688                          STATION DESCRIPTION
 JV1688
 JV1688'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1688'3.5 MI E FROM WESTMINSTER.
 JV1688'3.5 MILES EAST OF THE WESTERN MARYLAND RAILWAY FROM AN OVERPASS
 JV1688'AT WESTMINSTER, CARROLL COUNTY, ABOUT 96 FEET EAST OF SIGNAL
 JV1688'A 302, ABOUT 80 FEET SOUTHEAST OF THE STATION SIGN AT TANNERY, AND
 JV1688'24 FEET SOUTH OF THE CENTER LINE OF THE TRACK.  A STANDARD DISK,
 JV1688'STAMPED J 13 1935 AND SET IN THE TOP OF A CONCRETE POST.
 JV1688
 JV1688                          STATION RECOVERY (1942)
 JV1688
 JV1688'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942
 JV1688'RECOVERED IN GOOD CONDITION.
 JV1688
 JV1688                          STATION RECOVERY (1979)
 JV1688
 JV1688'RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1979
 JV1688'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JU1362 ***********************************************************************
 JU1362  DESIGNATION -  J 130
 JU1362  PID         -  JU1362
 JU1362  STATE/COUNTY-  MD/CECIL
 JU1362  COUNTRY     -  US
 JU1362  USGS QUAD   -  CECILTON (2016)
 JU1362
 JU1362                         *CURRENT SURVEY CONTROL
 JU1362  ______________________________________________________________________
 JU1362* NAD 83(1986) POSITION- 39 29 21.     (N) 075 52 24.     (W)   SCALED
 JU1362* NAVD 88 ORTHO HEIGHT -    19.244 (meters)       63.14  (feet) ADJUSTED
 JU1362  ______________________________________________________________________
 JU1362  GEOID HEIGHT    -        -33.364 (meters)                     GEOID18
 JU1362  DYNAMIC HEIGHT  -         19.234 (meters)       63.10  (feet) COMP
 JU1362  MODELED GRAVITY -    980,123.3   (mgal)                       NAVD 88
 JU1362
 JU1362  VERT ORDER      -  FIRST     CLASS I
 JU1362
 JU1362.The horizontal coordinates were scaled from a map and have
 JU1362.an estimated accuracy of +/- 6 seconds.
 JU1362
 JU1362.The orthometric height was determined by differential leveling and
 JU1362.adjusted by the NATIONAL GEODETIC SURVEY
 JU1362.in June 1991.
 JU1362
 JU1362.Significant digits in the geoid height do not necessarily reflect accuracy.
 JU1362.GEOID18 height accuracy estimate available here.
 JU1362
 JU1362.Click photographs - Photos may exist for this station.
 JU1362
 JU1362.The dynamic height is computed by dividing the NAVD 88
 JU1362.geopotential number by the normal gravity value computed on the
 JU1362.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JU1362.degrees latitude (g = 980.6199 gals.).
 JU1362
 JU1362.The modeled gravity was interpolated from observed gravity values.
 JU1362
 JU1362;                    North         East    Units  Estimated Accuracy
 JU1362;SPC MD       -   202,910.      496,920.      MT  (+/- 180 meters Scaled)
 JU1362
 JU1362_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVJ248714(NAD 83)
 JU1362
 JU1362                          SUPERSEDED SURVEY CONTROL
 JU1362
 JU1362  NGVD 29 (11/26/84)   19.486  (m)           63.93   (f) ADJUSTED    1 1
 JU1362
 JU1362.Superseded values are not recommended for survey control.
 JU1362
 JU1362.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JU1362.See file dsdata.pdf to determine how the superseded data were derived.
 JU1362
 JU1362_MARKER: DB = BENCH MARK DISK
 JU1362_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 JU1362+WITH SETTING: INTO GROUND
 JU1362_STAMPING: J 130 1971
 JU1362_MARK LOGO: CGS
 JU1362_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JU1362+STABILITY: SURFACE MOTION
 JU1362
 JU1362  HISTORY     - Date     Condition        Report By
 JU1362  HISTORY     - 1971     MONUMENTED       NGS
 JU1362  HISTORY     - 19881126 MARK NOT FOUND   USPSQD
 JU1362
 JU1362                          STATION DESCRIPTION
 JU1362
 JU1362'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 JU1362'1.4 MI W FROM CAYOTS.
 JU1362'ABOUT 1.45 MILES WEST ALONG TOWN POINT ROAD FROM THE JUNCTION OF
 JU1362'U.S. HIGHWAY 213 AT CAYOTS, 0.95 MILE WEST OF THE JUNCTION OF A
 JU1362'BLACK TOP ROAD LEADING NORTH, 0.1 MILE EAST OF THE JUNCTION OF A
 JU1362'ROAD LEADING SOUTH TO A FARMHOUSE WITH TREES (CEDAR) BORDERING
 JU1362'THE FARM ROAD, AT THE JUNCTION OF A LANE LEADING SOUTH TO PARLOR
 JU1362'POINT, 29 1/2 FEET SOUTH OF THE CENTER LINE OF TOWN POINT ROAD,
 JU1362'25.2 FEET NORTHEAST OF THE EAST GATE POST FOR STEEL GATE ACROSS
 JU1362'LANE, 18 FEET EAST OF THE CENTER LINE OF THE LANE, 7.7 FEET
 JU1362'SOUTH OF A FENCE CORNER, 1 FOOT WEST OF THE FENCE LINE ALONG THE
 JU1362'EAST SIDE OF THE LANE, 0.8 FOOT WEST OF A METAL WITNESS POST, 3
 JU1362'FEET ABOVE THE LEVEL OF THE ROAD, ON THE TOP OF A 4-FOOT COPPER
 JU1362'COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK
 JU1362'IS 1/2 INCH BELOW THE LEVEL OF THE GROUND AND ENCASED IN A 4 INCH
 JU1362'STEEL PIPE THAT PROJECTS 1 INCH ABOVE THE LEVEL OF THE GROUND.
 JU1362
 JU1362                          STATION RECOVERY (1988)
 JU1362
 JU1362'RECOVERY NOTE BY US POWER SQUADRON 1988 (GSW)
 JU1362'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1513 ***********************************************************************
 HV1513  DESIGNATION -  J 131
 HV1513  PID         -  HV1513
 HV1513  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1513  COUNTRY     -  US
 HV1513  USGS QUAD   -  DEALE (2016)
 HV1513
 HV1513                         *CURRENT SURVEY CONTROL
 HV1513  ______________________________________________________________________
 HV1513* NAD 83(1986) POSITION- 38 50 19.66   (N) 076 36 26.25   (W)   HD_HELD1
 HV1513* NAVD 88 ORTHO HEIGHT -    47.049 (meters)      154.36  (feet) ADJUSTED
 HV1513  ______________________________________________________________________
 HV1513  GEOID HEIGHT    -        -33.300 (meters)                     GEOID18
 HV1513  DYNAMIC HEIGHT  -         47.022 (meters)      154.27  (feet) COMP
 HV1513  MODELED GRAVITY -    980,058.1   (mgal)                       NAVD 88
 HV1513
 HV1513  VERT ORDER      -  FIRST     CLASS I
 HV1513
 HV1513.The horizontal coordinates were determined by differentially corrected
 HV1513.hand held GPS observations or other comparable positioning techniques
 HV1513.and have an estimated accuracy of +/- 3 meters.
 HV1513
 HV1513.The orthometric height was determined by differential leveling and
 HV1513.adjusted by the NATIONAL GEODETIC SURVEY
 HV1513.in June 1991.
 HV1513
 HV1513.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1513.GEOID18 height accuracy estimate available here.
 HV1513
 HV1513.Click photographs - Photos may exist for this station.
 HV1513
 HV1513.The dynamic height is computed by dividing the NAVD 88
 HV1513.geopotential number by the normal gravity value computed on the
 HV1513.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1513.degrees latitude (g = 980.6199 gals.).
 HV1513
 HV1513.The modeled gravity was interpolated from observed gravity values.
 HV1513
 HV1513;                    North         East    Units  Estimated Accuracy
 HV1513;SPC MD       -   130,184.4     434,094.2     MT  (+/- 3 meters HH1 GPS) 
 HV1513
 HV1513_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ6050200114(NAD 83)
 HV1513
 HV1513                          SUPERSEDED SURVEY CONTROL
 HV1513
 HV1513  NGVD 29 (11/26/84)   47.288  (m)          155.14   (f) ADJUSTED    1 1
 HV1513
 HV1513.Superseded values are not recommended for survey control.
 HV1513
 HV1513.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1513.See file dsdata.pdf to determine how the superseded data were derived.
 HV1513
 HV1513_MARKER: DB = BENCH MARK DISK
 HV1513_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV1513+WITH SETTING: INTO GROUND
 HV1513_STAMPING: J 131 1971
 HV1513_MARK LOGO: CGS
 HV1513_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1513+STABILITY: SURFACE MOTION
 HV1513_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 HV1513+SATELLITE: SATELLITE OBSERVATIONS - February 12, 2011
 HV1513
 HV1513  HISTORY     - Date     Condition        Report By
 HV1513  HISTORY     - 1971     MONUMENTED       NGS
 HV1513  HISTORY     - 20041113 GOOD             USPSQD
 HV1513  HISTORY     - 20051215 GOOD             USPSQD
 HV1513  HISTORY     - 20110212 GOOD             INDIV
 HV1513
 HV1513                          STATION DESCRIPTION
 HV1513
 HV1513'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV1513'0.6 MI N FROM LOTHIAN.
 HV1513'ABOUT 0.65 MILE NORTH ALONG STATE HIGHWAY 2 FROM THE POST OFFICE,
 HV1513'AT LOTHIAN, ABOUT 0.5 MILE SOUTH OF THE JUNCTION OF STATE
 HV1513'HIGHWAY 255, 151 1/2 FEET SOUTH-SOUTHEAST OF THE CENTER OF THE
 HV1513'JUNCTION OF GRAYS ROAD WHICH LEADS EAST, 42 FEET EAST OF THE
 HV1513'CENTER LINE OF THE HIGHWAY, 14 1/2 FEET SOUTH OF THE SOUTHWEST
 HV1513'CORNER OF A WOODEN FENCE, 2 FEET SOUTH-SOUTHWEST OF TELEPHONE
 HV1513'POLE NUMBER 219253, 1.1 FEET NORTH-NORTHEAST OF A METAL WITNESS
 HV1513'POST, ABOUT 1 FOOT BELOW THE LEVEL OF THE HIGHWAY, AND ON THE
 HV1513'TOP OF A 4-FOOT SECTION OF COPPER COATED ROD THAT IS ATTACHED
 HV1513'TO A METAL BASE PLATE.  THE DISK IS LEVEL WITH THE SURFACE
 HV1513'OF THE GROUND AND IS PROTECTED BY A 4-INCH METAL PIPE WHICH
 HV1513'PROJECTS 1 INCH.
 HV1513
 HV1513                          STATION RECOVERY (2004)
 HV1513
 HV1513'RECOVERY NOTE BY US POWER SQUADRON 2004
 HV1513'RECOVERED IN GOOD CONDITION.
 HV1513
 HV1513                          STATION RECOVERY (2005)
 HV1513
 HV1513'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 HV1513'RECOVERED IN GOOD CONDITION.
 HV1513
 HV1513                          STATION RECOVERY (2011)
 HV1513
 HV1513'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (JAL)
 HV1513'MONUMENT FOUND AND OCCUPIED WITH GPS USING REAL-TIME NETWORK (RTN)
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1592 ***********************************************************************
 HV1592  DESIGNATION -  J 132
 HV1592  PID         -  HV1592
 HV1592  STATE/COUNTY-  MD/ANNE ARUNDEL
 HV1592  COUNTRY     -  US
 HV1592  USGS QUAD   -  NORTH BEACH (2016)
 HV1592
 HV1592                         *CURRENT SURVEY CONTROL
 HV1592  ______________________________________________________________________
 HV1592* NAD 83(1986) POSITION- 38 43 49.     (N) 076 34 35.     (W)   SCALED
 HV1592* NAVD 88 ORTHO HEIGHT -    43.345 (meters)      142.21  (feet) ADJUSTED
 HV1592  ______________________________________________________________________
 HV1592  GEOID HEIGHT    -        -33.525 (meters)                     GEOID18
 HV1592  DYNAMIC HEIGHT  -         43.320 (meters)      142.13  (feet) COMP
 HV1592  MODELED GRAVITY -    980,051.1   (mgal)                       NAVD 88
 HV1592
 HV1592  VERT ORDER      -  FIRST     CLASS II
 HV1592
 HV1592.The horizontal coordinates were scaled from a map and have
 HV1592.an estimated accuracy of +/- 6 seconds.
 HV1592
 HV1592.The orthometric height was determined by differential leveling and
 HV1592.adjusted by the NATIONAL GEODETIC SURVEY
 HV1592.in June 1991.
 HV1592
 HV1592.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1592.GEOID18 height accuracy estimate available here.
 HV1592
 HV1592.Click photographs - Photos may exist for this station.
 HV1592
 HV1592.The dynamic height is computed by dividing the NAVD 88
 HV1592.geopotential number by the normal gravity value computed on the
 HV1592.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1592.degrees latitude (g = 980.6199 gals.).
 HV1592
 HV1592.The modeled gravity was interpolated from observed gravity values.
 HV1592
 HV1592;                    North         East    Units  Estimated Accuracy
 HV1592;SPC MD       -   118,150.      436,830.      MT  (+/- 180 meters Scaled)
 HV1592
 HV1592_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH629880(NAD 83)
 HV1592
 HV1592                          SUPERSEDED SURVEY CONTROL
 HV1592
 HV1592  NGVD 29 (11/26/84)   43.586  (m)          143.00   (f) ADJUSTED    1 2
 HV1592
 HV1592.Superseded values are not recommended for survey control.
 HV1592
 HV1592.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1592.See file dsdata.pdf to determine how the superseded data were derived.
 HV1592
 HV1592_MARKER: DB = BENCH MARK DISK
 HV1592_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV1592+WITH SETTING: INTO GROUND
 HV1592_STAMPING: J 132 1971
 HV1592_MARK LOGO: CGS
 HV1592_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV1592+STABILITY: SURFACE MOTION
 HV1592
 HV1592  HISTORY     - Date     Condition        Report By
 HV1592  HISTORY     - 1971     MONUMENTED       NGS
 HV1592  HISTORY     - 1972     GOOD             NGS
 HV1592  HISTORY     - 19980911 MARK NOT FOUND   USPSQD
 HV1592
 HV1592                          STATION DESCRIPTION
 HV1592
 HV1592'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1592'1 MI SE FROM FRIENDSHIP.
 HV1592'ABOUT 1.05 MILES SOUTHEAST ALONG STATE HIGHWAY 261 FROM THE
 HV1592'FRIENDSHIP METHODIST CHURCH AT FRIENDSHIP, AT THE JUNCTION OF
 HV1592'PROUT ROAD LEADING SOUTHWEST, ON THE PROPERTY OF WILLS STORE,
 HV1592'61 1/2 FEET SOUTH OF AND ACROSS THE HIGHWAY FROM A CABLE LINE
 HV1592'POLE SUPPORTING A LIGHT, 46 FEET SOUTHWEST OF THE CENTER LINE
 HV1592'OF PROUT ROAD, 26 1/2 FEET SOUTHEAST OF THE CENTER LINE OF THE
 HV1592'HIGHWAY, 0.5 MILE NORTHWEST OF THE JUNCTION OF FAIRHAVEN ROAD
 HV1592'LEADING NORTHEAST, 1 FOOT NORTHWEST OF A METAL WITNESS POST,
 HV1592'1 FOOT BELOW THE LEVEL OF THE HIGHWAY, AND ON THE TOP OF A 4 FOOT
 HV1592'COPPER COATED STEEL ROD THAT IS ATTACHED TO A METAL BASE PLATE.
 HV1592'THE DISK IS FLUSH WITH THE GROUND AND ENCASED IN A 6 INCH STEEL
 HV1592'PIPE THAT PROJECTS 2 INCHES ABOVE THE LEVEL OF THE GROUND.
 HV1592
 HV1592                          STATION RECOVERY (1998)
 HV1592
 HV1592'RECOVERY NOTE BY US POWER SQUADRON 1998
 HV1592'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV1569 ***********************************************************************
 HV1569  DESIGNATION -  J 133
 HV1569  PID         -  HV1569
 HV1569  STATE/COUNTY-  MD/CALVERT
 HV1569  COUNTRY     -  US
 HV1569  USGS QUAD   -  NORTH BEACH (2016)
 HV1569
 HV1569                         *CURRENT SURVEY CONTROL
 HV1569  ______________________________________________________________________
 HV1569* NAD 83(1986) POSITION- 38 39 28.17   (N) 076 31 49.22   (W)   HD_HELD1
 HV1569* NAVD 88 ORTHO HEIGHT -    34.076 (meters)      111.80  (feet) ADJUSTED
 HV1569  ______________________________________________________________________
 HV1569  GEOID HEIGHT    -        -33.761 (meters)                     GEOID18
 HV1569  DYNAMIC HEIGHT  -         34.056 (meters)      111.73  (feet) COMP
 HV1569  MODELED GRAVITY -    980,050.7   (mgal)                       NAVD 88
 HV1569
 HV1569  VERT ORDER      -  FIRST     CLASS II
 HV1569
 HV1569.The horizontal coordinates were determined by differentially corrected
 HV1569.hand held GPS observations or other comparable positioning techniques
 HV1569.and have an estimated accuracy of +/- 3 meters.
 HV1569
 HV1569.The orthometric height was determined by differential leveling and
 HV1569.adjusted by the NATIONAL GEODETIC SURVEY
 HV1569.in June 1991.
 HV1569
 HV1569.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV1569.GEOID18 height accuracy estimate available here.
 HV1569
 HV1569.Click photographs - Photos may exist for this station.
 HV1569
 HV1569.The dynamic height is computed by dividing the NAVD 88
 HV1569.geopotential number by the normal gravity value computed on the
 HV1569.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV1569.degrees latitude (g = 980.6199 gals.).
 HV1569
 HV1569.The modeled gravity was interpolated from observed gravity values.
 HV1569
 HV1569;                    North         East    Units  Estimated Accuracy
 HV1569;SPC MD       -   110,127.6     440,878.3     MT  (+/- 3 meters HH1 GPS) 
 HV1569
 HV1569_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH6684579917(NAD 83)
 HV1569
 HV1569                          SUPERSEDED SURVEY CONTROL
 HV1569
 HV1569  NGVD 29 (11/26/84)   34.319  (m)          112.59   (f) ADJUSTED    1 2
 HV1569
 HV1569.Superseded values are not recommended for survey control.
 HV1569
 HV1569.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV1569.See file dsdata.pdf to determine how the superseded data were derived.
 HV1569
 HV1569_MARKER: DB = BENCH MARK DISK
 HV1569_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 HV1569_STAMPING: J 133 1971
 HV1569_MARK LOGO: CGS
 HV1569_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 HV1569_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
 HV1569+SATELLITE: SATELLITE OBSERVATIONS - October 28, 2005
 HV1569
 HV1569  HISTORY     - Date     Condition        Report By
 HV1569  HISTORY     - 1971     MONUMENTED       NGS
 HV1569  HISTORY     - 1972     GOOD             NGS
 HV1569  HISTORY     - 20051028 GOOD             USPSQD
 HV1569  HISTORY     - 20060427 GOOD             GEOCAC
 HV1569
 HV1569                          STATION DESCRIPTION
 HV1569
 HV1569'DESCRIBED BY NATIONAL GEODETIC SURVEY 1972
 HV1569'2.6 MI S FROM CHESAPEAKE BEACH.
 HV1569'ABOUT 2.6 MILES SOUTH ALONG STATE HIGHWAY 261 FROM THE
 HV1569'CHESAPEAKE BEACH TOWN HALL, WEST OF AND ACROSS THE HIGHWAY
 HV1569'FROM THE MAIN GATE TO THE NAVAL RESEARCH LABORATORY - CHESAPEAKE
 HV1569'BEACH DIVISION, 62 FEET SOUTHEAST OF AND ACROSS A DRIVEWAY FROM
 HV1569'SENTRY HOUSE NO. 77, 36.5 FEET WEST OF THE CENTER LINE OF THE
 HV1569'HIGHWAY, 40 FEET SOUTH OF THE CENTER LINE OF A DRIVEWAY, 2.5
 HV1569'FEET SOUTHEAST OF A STEEL CORNER FENCE POST, 1.2 FEET EAST OF
 HV1569'A STEEL FENCE AND WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY AND
 HV1569'IS A DISK ON THE TOP OF A COPPER COATED STEEL ROD 2 INCHES
 HV1569'BELOW THE LEVEL OF THE GROUND AND ENCASED IN A 6 INCH STEEL
 HV1569'PIPE THAT PROJECTS 4 INCHES ABOVE THE LEVEL OF THE GROUND.  THE
 HV1569'ROD WAS DRIVEN TO REFUSAL AT A DEPTH OF 25 FEET.
 HV1569
 HV1569                          STATION RECOVERY (2005)
 HV1569
 HV1569'RECOVERY NOTE BY US POWER SQUADRON 2005
 HV1569'RECOVERED IN GOOD CONDITION.
 HV1569
 HV1569                          STATION RECOVERY (2006)
 HV1569
 HV1569'RECOVERY NOTE BY GEOCACHING 2006 (SRM)
 HV1569'PIPE IT IS ENCASED IN IS ALLOWING DIRT, GRASS AND OTHER DEBRIS TO
 HV1569'COLLECT.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV0341 ***********************************************************************
 HV0341  DESIGNATION -  J 134
 HV0341  PID         -  HV0341
 HV0341  STATE/COUNTY-  MD/CALVERT
 HV0341  COUNTRY     -  US
 HV0341  USGS QUAD   -  SOLOMONS ISLAND (2016)
 HV0341
 HV0341                         *CURRENT SURVEY CONTROL
 HV0341  ______________________________________________________________________
 HV0341* NAD 83(1986) POSITION- 38 21 18.     (N) 076 27 10.     (W)   SCALED
 HV0341* NAVD 88 ORTHO HEIGHT -    23.592 (meters)       77.40  (feet) ADJUSTED
 HV0341  ______________________________________________________________________
 HV0341  GEOID HEIGHT    -        -34.357 (meters)                     GEOID18
 HV0341  DYNAMIC HEIGHT  -         23.577 (meters)       77.35  (feet) COMP
 HV0341  MODELED GRAVITY -    980,023.4   (mgal)                       NAVD 88
 HV0341
 HV0341  VERT ORDER      -  FIRST     CLASS II
 HV0341
 HV0341.The horizontal coordinates were scaled from a map and have
 HV0341.an estimated accuracy of +/- 6 seconds.
 HV0341
 HV0341.The orthometric height was determined by differential leveling and
 HV0341.adjusted by the NATIONAL GEODETIC SURVEY
 HV0341.in June 1991.
 HV0341
 HV0341.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV0341.GEOID18 height accuracy estimate available here.
 HV0341
 HV0341.Click photographs - Photos may exist for this station.
 HV0341
 HV0341.The dynamic height is computed by dividing the NAVD 88
 HV0341.geopotential number by the normal gravity value computed on the
 HV0341.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV0341.degrees latitude (g = 980.6199 gals.).
 HV0341
 HV0341.The modeled gravity was interpolated from observed gravity values.
 HV0341
 HV0341;                    North         East    Units  Estimated Accuracy
 HV0341;SPC MD       -    76,550.      447,830.      MT  (+/- 180 meters Scaled)
 HV0341
 HV0341_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUH730462(NAD 83)
 HV0341
 HV0341                          SUPERSEDED SURVEY CONTROL
 HV0341
 HV0341  NGVD 29 (11/26/84)   23.836  (m)           78.20   (f) ADJUSTED    1 2
 HV0341
 HV0341.Superseded values are not recommended for survey control.
 HV0341
 HV0341.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV0341.See file dsdata.pdf to determine how the superseded data were derived.
 HV0341
 HV0341_MARKER: DB = BENCH MARK DISK
 HV0341_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV0341+WITH SETTING: INTO GROUND
 HV0341_STAMPING: J 134 1971
 HV0341_MARK LOGO: CGS
 HV0341_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV0341+STABILITY: SURFACE MOTION
 HV0341
 HV0341  HISTORY     - Date     Condition        Report By
 HV0341  HISTORY     - 1971     MONUMENTED       NGS
 HV0341  HISTORY     - 19950812 MARK NOT FOUND   USPSQD
 HV0341
 HV0341                          STATION DESCRIPTION
 HV0341
 HV0341'DESCRIBED BY NATIONAL GEODETIC SURVEY 1971
 HV0341'2.5 MI N FROM SOLOMONS.
 HV0341'ABOUT 2.5 MILES NORTH ALONG STATE HIGHWAY 2 AND 4 FROM THE
 HV0341'METHODIST CHURCH AT SOLOMONS, 0.3 MILE SOUTH OF THE ZION HALL
 HV0341'CHURCH AND CEMETERY, AT THE NORTHEAST END OF A 1.3 FEET HIGH
 HV0341'MASONARY WALL, 135.5 FEET NORTHWEST OF THE NORTH CORNER OF A
 HV0341'2-STORY HOUSE, 42.5 FEET NORTHEAST OF THE NORTHEAST EDGE OF
 HV0341'A CONCRETE STEP, 40.3 FEET SOUTHEAST OF THE CENTER LINE OF THE
 HV0341'HIGHWAY, 2.4 FEET SOUTHWEST OF THE NORTHEAST END OF THE WALL, 1.3
 HV0341'FEET NORTHWEST OF THE NORTHWEST SIDE OF THE WALL, ABOUT LEVEL
 HV0341'WITH THE HIGHWAY, AND ON THE TOP OF A 4 FOOT COPPER COATED STEEL
 HV0341'ROD THAT IS ATTACHED TO A METAL BASE PLATE.  THE DISK IS 3 INCHES
 HV0341'BELOW THE LEVEL OF THE GROUND AND ENCASED IN A 4 INCH IRON PIPE
 HV0341'THAT IS FLUSH WITH THE GROUND.
 HV0341
 HV0341                          STATION RECOVERY (1995)
 HV0341
 HV0341'RECOVERY NOTE BY US POWER SQUADRON 1995
 HV0341'MARK NOT FOUND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HV7794 ***********************************************************************
 HV7794  DESIGNATION -  J 135
 HV7794  PID         -  HV7794
 HV7794  STATE/COUNTY-  MD/PRINCE GEORGES
 HV7794  COUNTRY     -  US
 HV7794  USGS QUAD   -  BOWIE (2016)
 HV7794
 HV7794                         *CURRENT SURVEY CONTROL
 HV7794  ______________________________________________________________________
 HV7794* NAD 83(1986) POSITION- 38 52 42.     (N) 076 43 14.     (W)   SCALED
 HV7794* NAVD 88 ORTHO HEIGHT -    42.720 (meters)      140.16  (feet) ADJUSTED
 HV7794  ______________________________________________________________________
 HV7794  GEOID HEIGHT    -        -32.891 (meters)                     GEOID18
 HV7794  DYNAMIC HEIGHT  -         42.696 (meters)      140.08  (feet) COMP
 HV7794  MODELED GRAVITY -    980,073.0   (mgal)                       NAVD 88
 HV7794
 HV7794  VERT ORDER      -  FIRST     CLASS II
 HV7794
 HV7794.The horizontal coordinates were scaled from a map and have
 HV7794.an estimated accuracy of +/- 6 seconds.
 HV7794
 HV7794.The orthometric height was determined by differential leveling and
 HV7794.adjusted by the NATIONAL GEODETIC SURVEY
 HV7794.in June 1991.
 HV7794
 HV7794.Significant digits in the geoid height do not necessarily reflect accuracy.
 HV7794.GEOID18 height accuracy estimate available here.
 HV7794
 HV7794.Click photographs - Photos may exist for this station.
 HV7794
 HV7794.The dynamic height is computed by dividing the NAVD 88
 HV7794.geopotential number by the normal gravity value computed on the
 HV7794.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HV7794.degrees latitude (g = 980.6199 gals.).
 HV7794
 HV7794.The modeled gravity was interpolated from observed gravity values.
 HV7794
 HV7794;                    North         East    Units  Estimated Accuracy
 HV7794;SPC MD       -   134,540.      424,250.      MT  (+/- 180 meters Scaled)
 HV7794
 HV7794_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ507046(NAD 83)
 HV7794
 HV7794                          SUPERSEDED SURVEY CONTROL
 HV7794
 HV7794  NGVD 29 (11/26/84)   42.954  (m)          140.92   (f) ADJUSTED    1 2
 HV7794
 HV7794.Superseded values are not recommended for survey control.
 HV7794
 HV7794.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HV7794.See file dsdata.pdf to determine how the superseded data were derived.
 HV7794
 HV7794_MARKER: DV = VERTICAL CONTROL DISK
 HV7794_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HV7794+WITH SETTING: INTO GROUND
 HV7794_STAMPING: J 135 1975
 HV7794_MARK LOGO: NGS
 HV7794_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HV7794+STABILITY: SURFACE MOTION
 HV7794
 HV7794  HISTORY     - Date     Condition        Report By
 HV7794  HISTORY     - 1975     MONUMENTED       NGS
 HV7794  HISTORY     - 20080708 GOOD             MDSHA
 HV7794
 HV7794                          STATION DESCRIPTION
 HV7794
 HV7794'DESCRIBED BY NATIONAL GEODETIC SURVEY 1975
 HV7794'2.15 MI SOUTH FROM BOWIE.
 HV7794'0.15 MILE EAST ALONG POINTER RIDGE DRIVE FROM THE BOWIE VOLUNTEER FIRE
 HV7794'DEPARTMENT AND RESCUE SQUAD NO 3 BUILDING, THENCE 2.05 MILES SOUTH
 HV7794'ALONG U.S. HIGHWAY 301. .05 MILE NORTH OF CLAGETT LANDING ROAD. 59.6
 HV7794'FEET EAST OF THE CENTERLINE OF U.S. HIGHWAY 301(NORTHBOUND LANE).
 HV7794'85.0 FEET NORTHEAST OF A CONCRETE DRAINAGE DITCH. 5.3 FEET NORTH OF
 HV7794'POWER POLE NO 33705.
 HV7794
 HV7794                          STATION RECOVERY (2008)
 HV7794
 HV7794'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2008 (GDB)
 HV7794'RECOVERED AS DESCRIBED
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3822 ***********************************************************************
 JV3822  DESIGNATION -  J 136
 JV3822  PID         -  JV3822
 JV3822  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV3822  COUNTRY     -  US
 JV3822  USGS QUAD   -  ODENTON (2016)
 JV3822
 JV3822                         *CURRENT SURVEY CONTROL
 JV3822  ______________________________________________________________________
 JV3822* NAD 83(2011) POSITION- 39 04 29.86760(N) 076 37 45.24883(W)   ADJUSTED
 JV3822* NAD 83(2011) ELLIP HT-     4.690 (meters)        (06/27/12)   ADJUSTED
 JV3822* NAD 83(2011) EPOCH   -  2010.00
 JV3822* NAVD 88 ORTHO HEIGHT -    37.554 (meters)      123.21  (feet) ADJUSTED
 JV3822  ______________________________________________________________________
 JV3822  GEOID HEIGHT    -        -32.879 (meters)                     GEOID18
 JV3822  NAD 83(2011) X  -  1,146,565.645 (meters)                     COMP
 JV3822  NAD 83(2011) Y  - -4,823,695.507 (meters)                     COMP
 JV3822  NAD 83(2011) Z  -  3,998,784.062 (meters)                     COMP
 JV3822  LAPLACE CORR    -         -5.34  (seconds)                    DEFLEC18
 JV3822  DYNAMIC HEIGHT  -         37.533 (meters)      123.14  (feet) COMP
 JV3822  MODELED GRAVITY -    980,080.3   (mgal)                       NAVD 88
 JV3822
 JV3822  VERT ORDER      -  FIRST     CLASS II
 JV3822
 JV3822  Network accuracy estimates per FGDC Geospatial Positioning Accuracy
 JV3822  Standards:
 JV3822         FGDC (95% conf, cm)     Standard deviation (cm)     CorrNE
 JV3822            Horiz  Ellip           SD_N   SD_E   SD_h      (unitless)
 JV3822  -------------------------------------------------------------------
 JV3822  NETWORK   68.26  41.00           6.96  34.63  20.92     -0.24257934
 JV3822  -------------------------------------------------------------------
 JV3822  Click here for local accuracies and other accuracy information.
 JV3822
 JV3822.The horizontal coordinates were established by GPS observations
 JV3822.and adjusted by the National Geodetic Survey in June 2012.
 JV3822
 JV3822.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has 
 JV3822.been affixed to the stable North American tectonic plate. See 
 JV3822.www.ngs.noaa.gov/web/surveys/NA2011 for more information. 
 JV3822
 JV3822.The horizontal coordinates are valid at the epoch date displayed above
 JV3822.which is a decimal equivalence of Year/Month/Day.
 JV3822
 JV3822.The orthometric height was determined by differential leveling and
 JV3822.adjusted by the NATIONAL GEODETIC SURVEY
 JV3822.in June 1991.
 JV3822
 JV3822.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3822.GEOID18 height accuracy estimate available here.
 JV3822
 JV3822.Click photographs - Photos may exist for this station.
 JV3822
 JV3822.The X, Y, and Z were computed from the position and the ellipsoidal ht.
 JV3822
 JV3822.The Laplace correction was computed from DEFLEC18 derived deflections.
 JV3822
 JV3822.The ellipsoidal height was determined by GPS observations
 JV3822.and is referenced to NAD 83.
 JV3822
 JV3822.The dynamic height is computed by dividing the NAVD 88
 JV3822.geopotential number by the normal gravity value computed on the
 JV3822.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3822.degrees latitude (g = 980.6199 gals.).
 JV3822
 JV3822.The modeled gravity was interpolated from observed gravity values.
 JV3822
 JV3822. The following values were computed from the NAD 83(2011) position.
 JV3822
 JV3822;                    North         East     Units Scale Factor Converg.
 JV3822;SPC MD       -   156,393.107   432,082.548   MT  0.99995587   +0 13 57.7
 JV3822;SPC MD       -   513,099.72  1,417,590.83   sFT  0.99995587   +0 13 57.7
 JV3822;UTM  18      - 4,326,358.617   359,066.658   MT  0.99984457   -1 01 37.7
 JV3822
 JV3822!             -  Elev Factor  x  Scale Factor =   Combined Factor
 JV3822!SPC MD       -   0.99999926  x   0.99995587  =   0.99995513
 JV3822!UTM  18      -   0.99999926  x   0.99984457  =   0.99984383
 JV3822
 JV3822_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ5906626358(NAD 83)
 JV3822
 JV3822                          SUPERSEDED SURVEY CONTROL
 JV3822
 JV3822  NAD 83(2007)-  39 04 29.86705(N)    076 37 45.24848(W) AD(2002.00) 0
 JV3822  ELLIP H (02/10/07)    4.680  (m)                       GP(2002.00)    
 JV3822  ELLIP H (09/18/02)    4.749  (m)                       GP(       ) 4 2
 JV3822  NAD 83(1991)-  39 04 29.86905(N)    076 37 45.24883(W) AD(       ) 1
 JV3822  NAD 83(1986)-  39 04 29.86497(N)    076 37 45.25928(W) AD(       ) 1
 JV3822  NGVD 29              37.79   (m)          124.0    (f) LEVELING    3  
 JV3822  NGVD 29 (11/26/84)   37.791  (m)          123.99   (f) ADJUSTED    1 2
 JV3822
 JV3822.Superseded values are not recommended for survey control.
 JV3822
 JV3822.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV3822.See file dsdata.pdf to determine how the superseded data were derived.
 JV3822
 JV3822_MARKER: DV = VERTICAL CONTROL DISK
 JV3822_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
 JV3822_STAMPING: J 136 1976
 JV3822_MARK LOGO: NGS
 JV3822_PROJECTION: PROJECTING
 JV3822_MAGNETIC: I = MARKER IS A STEEL ROD
 JV3822_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3822_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV3822+SATELLITE: SATELLITE OBSERVATIONS - March 06, 2017
 JV3822_ROD/PIPE-DEPTH: 5.2 meters
 JV3822
 JV3822  HISTORY     - Date     Condition        Report By
 JV3822  HISTORY     - 1976     MONUMENTED       NGS
 JV3822  HISTORY     - 19880617 GOOD
 JV3822  HISTORY     - 19920309 GOOD             MDSHA
 JV3822  HISTORY     - 19970329 GOOD             DMW
 JV3822  HISTORY     - 20020218 GOOD             USPSQD
 JV3822  HISTORY     - 20021001 GOOD             JCLS
 JV3822  HISTORY     - 20050720 GOOD             USPSQD
 JV3822  HISTORY     - 20110619 GOOD             INDIV
 JV3822  HISTORY     - 20120223 GOOD             INDIV
 JV3822  HISTORY     - 20140617 GOOD             JCLS
 JV3822  HISTORY     - 20141201 GOOD             INDIV
 JV3822  HISTORY     - 20170306 GOOD             INDIV
 JV3822
 JV3822                          STATION DESCRIPTION
 JV3822
 JV3822'DESCRIBED BY NATIONAL GEODETIC SURVEY 1976
 JV3822'1.7 MI SOUTH FROM BENFIELD.
 JV3822'1.7 MILES SOUTH ALONG STATE HIGHWAY 3 FROM THE ANNE ARUNDEL POLICE
 JV3822'AND FIRE DEPARTMENT HEADQUARTERS. SET BETWEEN THE HILL MOTEL AND THE
 JV3822'WHITE GABLES MOTEL. 42 FEET EAST OF THE CENTERLINE OF THE NORTHBOUND
 JV3822'LANE OF STATE HIGHWAY 3. 28.3 FEET SOUTH OF HILL MOTEL DRIVEWAY. 8.3
 JV3822'FEET NORTH OF WHITE GABLES MOTEL DRIVEWAY. 18 FEET SOUTHEAST MILE POST
 JV3822'NO 10. 26 FEET SOUTH OF A WHITE GATE PILLAR ABOUT 5 FEET HIGH. 4 FEET
 JV3822'NORTH OF POWER POLE NO 354514.
 JV3822
 JV3822                          STATION RECOVERY (1988)
 JV3822
 JV3822'RECOVERED 1988
 JV3822'RECOVERED IN GOOD CONDITION.
 JV3822
 JV3822                          STATION RECOVERY (1992)
 JV3822
 JV3822'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JV3822'RECOVERED IN GOOD CONDITION.
 JV3822
 JV3822                          STATION RECOVERY (1997)
 JV3822
 JV3822'RECOVERY NOTE BY DAFT MCCUNE WALKER INCORPORATED 1997 (DMM)
 JV3822'RECOVERED AS DESCRIBED.
 JV3822
 JV3822                          STATION RECOVERY (2002)
 JV3822
 JV3822'RECOVERY NOTE BY US POWER SQUADRON 2002 (CRA)
 JV3822'RECOVERED IN GOOD CONDITION.
 JV3822
 JV3822                          STATION RECOVERY (2002)
 JV3822
 JV3822'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2002
 JV3822'RECOVERED IN GOOD CONDITION.
 JV3822
 JV3822                          STATION RECOVERY (2005)
 JV3822
 JV3822'RECOVERY NOTE BY US POWER SQUADRON 2005 (FM)
 JV3822'RECOVERED IN GOOD CONDITION.
 JV3822
 JV3822                          STATION RECOVERY (2011)
 JV3822
 JV3822'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2011 (WRA)
 JV3822'RECOVERED AS DESCRIBED, DESCRIPTION IS ADEQUATE. USED FOR GPS (JFS)
 JV3822
 JV3822                          STATION RECOVERY (2012)
 JV3822
 JV3822'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2012 (WRA)
 JV3822'RECOVERED AS DESCRIBED, DESCRIPTION IS ADEQUATE
 JV3822
 JV3822                          STATION RECOVERY (2014)
 JV3822
 JV3822'RECOVERY NOTE BY JOHN CHANCE LAND SURVEYS INC 2014 (MRY)
 JV3822'RECOVERED IN GOOD CONDITION.
 JV3822
 JV3822                          STATION RECOVERY (2014)
 JV3822
 JV3822'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2014 (GDS)
 JV3822'RECOVERED BY DEWBERRY CONSULTANTS LLC.
 JV3822
 JV3822                          STATION RECOVERY (2017)
 JV3822
 JV3822'RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2017 (WRA)
 JV3822'RECOVERED AS DESCRIBED
 JV3822'DESCRIPTION IS ADEQUATE
 JV3822'USED FOR RAPID STATIC GPS
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV7007 ***********************************************************************
 JV7007  DESIGNATION -  J 137 RESET
 JV7007  PID         -  JV7007
 JV7007  STATE/COUNTY-  MD/ANNE ARUNDEL
 JV7007  COUNTRY     -  US
 JV7007  USGS QUAD   -  RELAY (2016)
 JV7007
 JV7007                         *CURRENT SURVEY CONTROL
 JV7007  ______________________________________________________________________
 JV7007* NAD 83(1986) POSITION- 39 08 03.     (N) 076 38 35.     (W)   SCALED
 JV7007* NAVD 88 ORTHO HEIGHT -    37.020 (meters)      121.46  (feet) ADJUSTED
 JV7007  ______________________________________________________________________
 JV7007  GEOID HEIGHT    -        -32.800 (meters)                     GEOID18
 JV7007  DYNAMIC HEIGHT  -         37.000 (meters)      121.39  (feet) COMP
 JV7007  MODELED GRAVITY -    980,086.4   (mgal)                       NAVD 88
 JV7007
 JV7007  VERT ORDER      -  SECOND    CLASS I
 JV7007
 JV7007.The horizontal coordinates were scaled from a map and have
 JV7007.an estimated accuracy of +/- 6 seconds.
 JV7007
 JV7007.The orthometric height was determined by differential leveling and
 JV7007.adjusted by the NATIONAL GEODETIC SURVEY
 JV7007.in March 1995.
 JV7007
 JV7007.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV7007.GEOID18 height accuracy estimate available here.
 JV7007
 JV7007.Click photographs - Photos may exist for this station.
 JV7007
 JV7007.The dynamic height is computed by dividing the NAVD 88
 JV7007.geopotential number by the normal gravity value computed on the
 JV7007.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV7007.degrees latitude (g = 980.6199 gals.).
 JV7007
 JV7007.The modeled gravity was interpolated from observed gravity values.
 JV7007
 JV7007;                    North         East    Units  Estimated Accuracy
 JV7007;SPC MD       -   162,960.      430,860.      MT  (+/- 180 meters Scaled)
 JV7007
 JV7007_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ579329(NAD 83)
 JV7007
 JV7007                          SUPERSEDED SURVEY CONTROL
 JV7007
 JV7007.No superseded survey control is available for this station.
 JV7007
 JV7007_MARKER: DV = VERTICAL CONTROL DISK
 JV7007_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN
 JV7007+WITH SETTING: PAVEMENT
 JV7007_SP_SET: LARGE OVERHEAD SIGN FOUNDATION
 JV7007_STAMPING: J 137 RESET 1992
 JV7007_MARK LOGO: NGS
 JV7007_MAGNETIC: O = OTHER; SEE DESCRIPTION
 JV7007_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV7007+STABILITY: SURFACE MOTION
 JV7007_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
 JV7007+SATELLITE: SATELLITE OBSERVATIONS - February 18, 2001
 JV7007
 JV7007  HISTORY     - Date     Condition        Report By
 JV7007  HISTORY     - 1992     MONUMENTED       MDSHA
 JV7007  HISTORY     - 20010218 GOOD             USPSQD
 JV7007
 JV7007                          STATION DESCRIPTION
 JV7007
 JV7007'DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
 JV7007'THE MARKER IS LOCATED ABOUT 12.2 MI (19.6 KM) SOUTH OF THE
 JV7007'APPROXIMATE CENTER OF BALTIMORE, 3.3 MI (5.3 KM) NORTH-NORTHWEST OF
 JV7007'BENFIELD, 6.85 MI (11.02 KM) NORTHWEST OF SEVERNA PARK AND ALONG THE
 JV7007'EAST SIDE OF INTERSTATE HIGHWAY 97.  IT IS ON ROAD RIGHT-OF-WAY.  TO
 JV7007'REACH FROM THE SOUTHWEST END OF THE U.S. HIGHWAYS 50 AND 301 BRIDGE
 JV7007'OVER THE SEVERN RIVER, GO SOUTHWEST ON U.S. HIGHWAYS 50 AND 301 FOR
 JV7007'2.8 MI (4.5 KM) TO AN EXIT RAMP ON THE RIGHT LEADING TO INTERSTATE
 JV7007'HIGHWAY 97.  BEAR RIGHT AND GO NORTHWEST ON INTERSTATE HIGHWAY 97 FOR
 JV7007'8.2 MI (13.2 KM) TO A POINT WHERE THE NORTHBOUND LANE OF INTERSTATE
 JV7007'HIGHWAY 97 PASSES OVER AN EXIT RAMP LEADING TO THE WESTBOUND LANE OF
 JV7007'STATE HIGHWAY 32.  BEAR RIGHT AND GO NORTHERLY ON INTERSTATE HIGHWAY
 JV7007'97 FOR 5.45 MI (8.77 KM) TO THE MARKER ON THE RIGHT.  THIS MARKER IS
 JV7007'ALSO LOCATED 4.85 MI (7.81 KM) SOUTH ALONG INTERSTATE HIGHWAY 97 FROM
 JV7007'A POINT WHERE THE SOUTHBOUND LANE OF INTETRSTATE HIGHWAY 97 PASSES
 JV7007'UNDER INTERSTATE HIGHWAY 695.  THE DISK IS SET IN A DRILL HOLE IN THE
 JV7007'SOUTHWEST CORNER OF A MASSIVE 3 FT (0.9 M) BY 10 FT (3.0 M)
 JV7007'RECTANGULAR SHAPED CONCRETE FOUNDATION FOR A LARGE OVERHEAD SIGN
 JV7007'WHICH STATES EXIT 13 174 QUARTERFIELD RD 1/2 MI EXIT 14 100 EAST
 JV7007'GIBSON ISLAND 3/4 MI.  IT IS 34.5 FT (10.5 M) EAST OF THE MOST EAST
 JV7007'EDGE OF THE NORTHBOUND LANES OF INTERSTATE HIGHWAY 97, 6.5 FT (2.0 M)
 JV7007'EAST OF THE EAST EDGE OF A PARAPET WALL ALONG THE EAST SIDE OF THE
 JV7007'HIGHWAY, 9.5 FT (2.9 M) SOUTH OF THE NORTH EDGE OF THE CONCRETE
 JV7007'FOUNDATION, 0.5 FT (0.2 M) NORTH OF THE SOUTH EDGE OF THE FOUNDATION,
 JV7007'20 FT (6.1 M) WEST OF THE EAST CHAINLINK RIGHT-OF-WAY FENCE AND ABOUT
 JV7007'1 FT (0.3 M) LOWER THAN THE HIGHWAY.
 JV7007
 JV7007                          STATION RECOVERY (2001)
 JV7007
 JV7007'RECOVERY NOTE BY US POWER SQUADRON 2001 (CRA)
 JV7007'RECOVERED IN GOOD CONDITION.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV1547 ***********************************************************************
 JV1547  DESIGNATION -  J 14
 JV1547  PID         -  JV1547
 JV1547  STATE/COUNTY-  MD/BALTIMORE
 JV1547  COUNTRY     -  US
 JV1547  USGS QUAD   -  PHOENIX (2016)
 JV1547
 JV1547                         *CURRENT SURVEY CONTROL
 JV1547  ______________________________________________________________________
 JV1547* NAD 83(1986) POSITION- 39 34 05.     (N) 076 37 15.     (W)   SCALED
 JV1547* NAVD 88 ORTHO HEIGHT -    91.733 (meters)      300.96  (feet) ADJUSTED
 JV1547  ______________________________________________________________________
 JV1547  GEOID HEIGHT    -        -32.358 (meters)                     GEOID18
 JV1547  DYNAMIC HEIGHT  -         91.686 (meters)      300.81  (feet) COMP
 JV1547  MODELED GRAVITY -    980,118.3   (mgal)                       NAVD 88
 JV1547
 JV1547  VERT ORDER      -  SECOND    CLASS 0
 JV1547
 JV1547.The horizontal coordinates were scaled from a map and have
 JV1547.an estimated accuracy of +/- 6 seconds.
 JV1547
 JV1547.The orthometric height was determined by differential leveling and
 JV1547.adjusted by the NATIONAL GEODETIC SURVEY
 JV1547.in June 1991.
 JV1547
 JV1547.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV1547.GEOID18 height accuracy estimate available here.
 JV1547
 JV1547.Click photographs - Photos may exist for this station.
 JV1547
 JV1547.The dynamic height is computed by dividing the NAVD 88
 JV1547.geopotential number by the normal gravity value computed on the
 JV1547.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV1547.degrees latitude (g = 980.6199 gals.).
 JV1547
 JV1547.The modeled gravity was interpolated from observed gravity values.
 JV1547
 JV1547;                    North         East    Units  Estimated Accuracy
 JV1547;SPC MD       -   211,140.      432,580.      MT  (+/- 180 meters Scaled)
 JV1547
 JV1547_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ607810(NAD 83)
 JV1547
 JV1547                          SUPERSEDED SURVEY CONTROL
 JV1547
 JV1547  NGVD 29 (11/26/84)   91.972  (m)          301.74   (f) ADJUSTED    2 0
 JV1547
 JV1547.Superseded values are not recommended for survey control.
 JV1547
 JV1547.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 JV1547.See file dsdata.pdf to determine how the superseded data were derived.
 JV1547
 JV1547_MARKER: DB = BENCH MARK DISK
 JV1547_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
 JV1547_STAMPING: J 14 1935
 JV1547_MARK LOGO: CGS
 JV1547_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 JV1547+STABILITY: SURFACE MOTION
 JV1547
 JV1547  HISTORY     - Date     Condition        Report By
 JV1547  HISTORY     - 1935     MONUMENTED       CGS
 JV1547
 JV1547                          STATION DESCRIPTION
 JV1547
 JV1547'DESCRIBED BY COAST AND GEODETIC SURVEY 1935
 JV1547'AT CORBETT.
 JV1547'AT CORBETT, BALTIMORE COUNTY, 500 FEET SOUTH OF THE PENNSYLVANIA
 JV1547'STATION, 0.2 MILE NORTH OF MILEPOST 22, AND 45 FEET EAST OF THE
 JV1547'CENTERLINE OF THE EAST TRACK.  A STANDARD DISK, STAMPED J 14 1935
 JV1547'AND SET IN THE TOP OF A CONCRETE POST.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 HU1033 ***********************************************************************
 HU1033  DESIGNATION -  J 141
 HU1033  PID         -  HU1033
 HU1033  STATE/COUNTY-  MD/WORCESTER
 HU1033  COUNTRY     -  US
 HU1033  USGS QUAD   -  TINGLES ISLAND (2016)
 HU1033
 HU1033                         *CURRENT SURVEY CONTROL
 HU1033  ______________________________________________________________________
 HU1033* NAD 83(1986) POSITION- 38 09 29.     (N) 075 10 14.     (W)   SCALED
 HU1033* NAVD 88 ORTHO HEIGHT -     1.851 (meters)        6.07  (feet) ADJUSTED
 HU1033  ______________________________________________________________________
 HU1033  GEOID HEIGHT    -        -36.265 (meters)                     GEOID18
 HU1033  DYNAMIC HEIGHT  -          1.850 (meters)        6.07  (feet) COMP
 HU1033  MODELED GRAVITY -    979,988.2   (mgal)                       NAVD 88
 HU1033
 HU1033  VERT ORDER      -  SECOND    CLASS I
 HU1033
 HU1033.The horizontal coordinates were scaled from a map and have
 HU1033.an estimated accuracy of +/- 6 seconds.
 HU1033
 HU1033.The orthometric height was determined by differential leveling and
 HU1033.adjusted by the NATIONAL GEODETIC SURVEY
 HU1033.in June 1991.
 HU1033
 HU1033.Significant digits in the geoid height do not necessarily reflect accuracy.
 HU1033.GEOID18 height accuracy estimate available here.
 HU1033
 HU1033.Click photographs - Photos may exist for this station.
 HU1033
 HU1033.The dynamic height is computed by dividing the NAVD 88
 HU1033.geopotential number by the normal gravity value computed on the
 HU1033.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 HU1033.degrees latitude (g = 980.6199 gals.).
 HU1033
 HU1033.The modeled gravity was interpolated from observed gravity values.
 HU1033
 HU1033;                    North         East    Units  Estimated Accuracy
 HU1033;SPC MD       -    56,150.      560,330.      MT  (+/- 180 meters Scaled)
 HU1033
 HU1033_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SVH850233(NAD 83)
 HU1033
 HU1033                          SUPERSEDED SURVEY CONTROL
 HU1033
 HU1033  NGVD 29 (11/26/84)    2.091  (m)            6.86   (f) ADJUSTED    2 1
 HU1033
 HU1033.Superseded values are not recommended for survey control.
 HU1033
 HU1033.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 HU1033.See file dsdata.pdf to determine how the superseded data were derived.
 HU1033
 HU1033_MARKER: DV = VERTICAL CONTROL DISK
 HU1033_SETTING: 16 = (FASTENED TO) A METAL ROD WITH BASE PLATE BURIED/SCREWED
 HU1033+WITH SETTING: INTO GROUND
 HU1033_STAMPING: J 141 1977
 HU1033_MARK LOGO: NGS
 HU1033_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
 HU1033+STABILITY: SURFACE MOTION
 HU1033
 HU1033  HISTORY     - Date     Condition        Report By
 HU1033  HISTORY     - 1977     MONUMENTED       NGS
 HU1033  HISTORY     - 1988     GOOD             USPSQD
 HU1033  HISTORY     - 20150309 MARK NOT FOUND   ARCSHE
 HU1033
 HU1033                          STATION DESCRIPTION
 HU1033
 HU1033'DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 (DCF)
 HU1033'IN ASSATEAGUE ISLAND.
 HU1033'5.9 MILES SOUTHWEST ALONG THE PAVED AND DIRT ROAD FROM THE
 HU1033'JUNCTION OF STATE HIGHWAY 611 ON ASSATEAGUE ISLAND, 0.2 MILE NORTH
 HU1033'EAST OF JEEP TRAIL 3, SOUTHEAST OF THE POWERLINE, ON THE EAST SLOPE
 HU1033'OF A DUNE, 69 FEET NORTHWEST OF THE CENTERLINE OF THE ROAD, 49 FEET
 HU1033'NORTHWEST OF THE CABLE GUARD.
 HU1033
 HU1033                          STATION RECOVERY (1988)
 HU1033
 HU1033'RECOVERY NOTE BY US POWER SQUADRON 1988 (RHK)
 HU1033'RECOVERED IN GOOD CONDITION.
 HU1033
 HU1033                          STATION RECOVERY (2015)
 HU1033
 HU1033'RECOVERY NOTE BY ARCHER-SHEE LAND SURVEYING 2015 (MRA)
 HU1033'NONE OF THE ORIGINAL REFERENCE OBJECTS STILL EXIST.  AN ATTEMPT WAS
 HU1033'MADE TO LOCATE THE MARK WITH A MAGNETIC LOCATOR, BUT WITH NO SUCCESS.
 HU1033'THE MARK MAY BE COVERED BY 3 FT (0.9 M) OF SAND.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3876 ***********************************************************************
 JV3876  DESIGNATION -  J 143
 JV3876  PID         -  JV3876
 JV3876  STATE/COUNTY-  MD/FREDERICK
 JV3876  COUNTRY     -  US
 JV3876  USGS QUAD   -  POINT OF ROCKS (2016)
 JV3876
 JV3876                         *CURRENT SURVEY CONTROL
 JV3876  ______________________________________________________________________
 JV3876* NAD 83(1986) POSITION- 39 19 59.     (N) 077 34 11.     (W)   SCALED
 JV3876* NAVD 88 ORTHO HEIGHT -    83.011 (meters)      272.35  (feet) ADJUSTED
 JV3876  ______________________________________________________________________
 JV3876  GEOID HEIGHT    -        -32.921 (meters)                     GEOID18
 JV3876  DYNAMIC HEIGHT  -         82.965 (meters)      272.19  (feet) COMP
 JV3876  MODELED GRAVITY -    980,077.6   (mgal)                       NAVD 88
 JV3876
 JV3876  VERT ORDER      -  FIRST     CLASS II
 JV3876
 JV3876.The horizontal coordinates were scaled from a map and have
 JV3876.an estimated accuracy of +/- 6 seconds.
 JV3876
 JV3876.The orthometric height was determined by differential leveling and
 JV3876.adjusted by the NATIONAL GEODETIC SURVEY
 JV3876.in June 1991.
 JV3876
 JV3876.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3876.GEOID18 height accuracy estimate available here.
 JV3876
 JV3876.Click photographs - Photos may exist for this station.
 JV3876
 JV3876.The dynamic height is computed by dividing the NAVD 88
 JV3876.geopotential number by the normal gravity value computed on the
 JV3876.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3876.degrees latitude (g = 980.6199 gals.).
 JV3876
 JV3876.The modeled gravity was interpolated from observed gravity values.
 JV3876
 JV3876;                    North         East    Units  Estimated Accuracy
 JV3876;SPC MD       -   185,130.      350,880.      MT  (+/- 180 meters Scaled)
 JV3876
 JV3876_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ785568(NAD 83)
 JV3876
 JV3876                          SUPERSEDED SURVEY CONTROL
 JV3876
 JV3876.No superseded survey control is available for this station.
 JV3876
 JV3876_MARKER: DV = VERTICAL CONTROL DISK
 JV3876_SETTING: 66 = SET IN ROCK OUTCROP
 JV3876_STAMPING: J 143 1979
 JV3876_MARK LOGO: NGS
 JV3876_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3876+STABILITY: POSITION/ELEVATION WELL
 JV3876
 JV3876  HISTORY     - Date     Condition        Report By
 JV3876  HISTORY     - 1979     MONUMENTED       NGS
 JV3876  HISTORY     - 20050611 MARK NOT FOUND   GEOCAC
 JV3876
 JV3876                          STATION DESCRIPTION
 JV3876
 JV3876'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3876'2.8 MI NE FROM BRUNSWICK.
 JV3876'2.8 MILES NORTHEAST ALONG STATE ROUTE 464 FROM THE JUNCTIONS OF
 JV3876'NINTH AVENUE AND CUMMINGS ROAD IN BRUNSWICK TO THE MARK ON THE RIGHT,
 JV3876'5.35 MILES NORTHWEST OF THE JUNCTION OF STATE ROUTE 28 IN POINT OF
 JV3876'ROCKS, SET IN BEDROCK AT THE JUNCTION OF HORNIE ROAD, 82.5 FEET
 JV3876'SOUTHWEST OF  THE CENTERLINE OF ROUTE 464, 70 FEET SOUTH OF TELEPHONE
 JV3876'POLE 98 WITH 2 GUY WIRES AND A TELEPHONE CABLE JUNCTION BOX, 27 FEET
 JV3876'NORTHWEST OF THE CENTER OF A WOODS ROAD LEADING SOUTHWEST AND DOWN
 JV3876'HILL TO CATOCTIN CREEK.
 JV3876'THE MARK IS 1 FT  S FROM A WITNESS POST.
 JV3876'THE MARK IS ABOVE LEVEL WITH HIGHWAY.
 JV3876
 JV3876                          STATION RECOVERY (2005)
 JV3876
 JV3876'RECOVERY NOTE BY GEOCACHING 2005 (LWB)
 JV3876'MARK NOT FOUND
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3943 ***********************************************************************
 JV3943  DESIGNATION -  J 146
 JV3943  PID         -  JV3943
 JV3943  STATE/COUNTY-  MD/WASHINGTON
 JV3943  COUNTRY     -  US
 JV3943  USGS QUAD   -  KEEDYSVILLE (2016)
 JV3943
 JV3943                         *CURRENT SURVEY CONTROL
 JV3943  ______________________________________________________________________
 JV3943* NAD 83(1986) POSITION- 39 27 23.     (N) 077 41 02.     (W)   SCALED
 JV3943* NAVD 88 ORTHO HEIGHT -   143.207 (meters)      469.84  (feet) ADJUSTED
 JV3943  ______________________________________________________________________
 JV3943  GEOID HEIGHT    -        -33.606 (meters)                     GEOID18
 JV3943  DYNAMIC HEIGHT  -        143.123 (meters)      469.56  (feet) COMP
 JV3943  MODELED GRAVITY -    980,036.7   (mgal)                       NAVD 88
 JV3943
 JV3943  VERT ORDER      -  FIRST     CLASS II
 JV3943
 JV3943.The horizontal coordinates were scaled from a map and have
 JV3943.an estimated accuracy of +/- 6 seconds.
 JV3943
 JV3943.The orthometric height was determined by differential leveling and
 JV3943.adjusted by the NATIONAL GEODETIC SURVEY
 JV3943.in June 1991.
 JV3943
 JV3943.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3943.GEOID18 height accuracy estimate available here.
 JV3943
 JV3943.Click photographs - Photos may exist for this station.
 JV3943
 JV3943.The dynamic height is computed by dividing the NAVD 88
 JV3943.geopotential number by the normal gravity value computed on the
 JV3943.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3943.degrees latitude (g = 980.6199 gals.).
 JV3943
 JV3943.The modeled gravity was interpolated from observed gravity values.
 JV3943
 JV3943;                    North         East    Units  Estimated Accuracy
 JV3943;SPC MD       -   198,890.      341,140.      MT  (+/- 180 meters Scaled)
 JV3943
 JV3943_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STJ690708(NAD 83)
 JV3943
 JV3943                          SUPERSEDED SURVEY CONTROL
 JV3943
 JV3943.No superseded survey control is available for this station.
 JV3943
 JV3943_MARKER: DV = VERTICAL CONTROL DISK
 JV3943_SETTING: 66 = SET IN ROCK OUTCROP
 JV3943_STAMPING: J 146 1979
 JV3943_MARK LOGO: NGS
 JV3943_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
 JV3943+STABILITY: POSITION/ELEVATION WELL
 JV3943
 JV3943  HISTORY     - Date     Condition        Report By
 JV3943  HISTORY     - 1979     MONUMENTED       NGS
 JV3943
 JV3943                          STATION DESCRIPTION
 JV3943
 JV3943'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3943'2.55 MI SE FROM KEEDYSVILE.
 JV3943'0.1 MILE SOUTH ALONG SOUTH MAIN STREET FROM THE POST OFFICE IN
 JV3943'KEEDYSVILLE, THENCE 0.85 MILE SOUTHEAST ALONG DOG STREET ROAD, THENCE
 JV3943'1.6 MILES SOUTHEAST ALONG MT BRIAR ROAD (EAKLES MILL ROAD) TO THE
 JV3943'MARK ON THE LEFT, SET IN THE SOUTHEAST END OF A LARGE ROCK CUT, 313
 JV3943'FEET EAST OF THE CENTER LINE OF THE ROAD, 67 FEET NORTH OF THE
 JV3943'CENTER LINE OF THE DRIVE LEADING TO A LARGE TWO STORY HOUSE, 26 FEET
 JV3943'NORTHWEST OF THE NORTHWEST CORNER OF THE PORCH, 17.5 FEET WEST OF A
 JV3943'SOUTHWEST FENCE CORNER, 12 FEET SOUTHEAST OF A SOUTHEAST FENCE CORNER.
 JV3943'THE MARK IS 3 FT ABOVE ROAD.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JV3849 ***********************************************************************
 JV3849  DESIGNATION -  J 147
 JV3849  PID         -  JV3849
 JV3849  STATE/COUNTY-  MD/MONTGOMERY
 JV3849  COUNTRY     -  US
 JV3849  USGS QUAD   -  ROCKVILLE (2016)
 JV3849
 JV3849                         *CURRENT SURVEY CONTROL
 JV3849  ______________________________________________________________________
 JV3849* NAD 83(1986) POSITION- 39 07 02.     (N) 077 10 09.     (W)   SCALED
 JV3849* NAVD 88 ORTHO HEIGHT -   144.985 (meters)      475.67  (feet) ADJUSTED
 JV3849  ______________________________________________________________________
 JV3849  GEOID HEIGHT    -        -31.716 (meters)                     GEOID18
 JV3849  DYNAMIC HEIGHT  -        144.909 (meters)      475.42  (feet) COMP
 JV3849  MODELED GRAVITY -    980,100.5   (mgal)                       NAVD 88
 JV3849
 JV3849  VERT ORDER      -  FIRST     CLASS II
 JV3849
 JV3849.The horizontal coordinates were scaled from a map and have
 JV3849.an estimated accuracy of +/- 6 seconds.
 JV3849
 JV3849.The orthometric height was determined by differential leveling and
 JV3849.adjusted by the NATIONAL GEODETIC SURVEY
 JV3849.in June 1991.
 JV3849
 JV3849.Significant digits in the geoid height do not necessarily reflect accuracy.
 JV3849.GEOID18 height accuracy estimate available here.
 JV3849
 JV3849.Click photographs - Photos may exist for this station.
 JV3849
 JV3849.The dynamic height is computed by dividing the NAVD 88
 JV3849.geopotential number by the normal gravity value computed on the
 JV3849.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JV3849.degrees latitude (g = 980.6199 gals.).
 JV3849
 JV3849.The modeled gravity was interpolated from observed gravity values.
 JV3849
 JV3849;                    North         East    Units  Estimated Accuracy
 JV3849;SPC MD       -   161,030.      385,370.      MT  (+/- 180 meters Scaled)
 JV3849
 JV3849_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ124320(NAD 83)
 JV3849
 JV3849                          SUPERSEDED SURVEY CONTROL
 JV3849
 JV3849.No superseded survey control is available for this station.
 JV3849
 JV3849_MARKER: DV = VERTICAL CONTROL DISK
 JV3849_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
 JV3849_STAMPING: J 147 1979
 JV3849_MARK LOGO: NGS
 JV3849_PROJECTION: RECESSED 10 CENTIMETERS
 JV3849_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
 JV3849_ROD/PIPE-DEPTH: 4.3 meters
 JV3849
 JV3849  HISTORY     - Date     Condition        Report By
 JV3849  HISTORY     - 1979     MONUMENTED       NGS
 JV3849  HISTORY     - 20020125 MARK NOT FOUND   MDSHA
 JV3849
 JV3849                          STATION DESCRIPTION
 JV3849
 JV3849'DESCRIBED BY NATIONAL GEODETIC SURVEY 1979
 JV3849'0.55 MI SE FROM GAITHERSVURG.
 JV3849'0.55 MILE SOUTHEAST ALONG STATE ROUTE 355 FROM THE INTERSECTION OF
 JV3849'SHADY GROVE ROAD IN GAITHERSBURG TO THE MARK ON THE RIGHT, SET
 JV3849'DIRECTLY ACROSS THE HIGHWAY FROM REED BROTHERS DODGE SALES AND SERVICE
 JV3849'IN A FENCE LINE, 26.5 FEET SOUTHWEST OF THE CENTER OF A CATCH BASIN,
 JV3849'25 FEET SOUTHWEST OF THE SOUTHWEST CURB OF ROUTE 355, 12 FEET SOUTH
 JV3849'WEST OF POWER POLE 751467-8659, 1 FOOT NORTHEAST OF A 4 FOOT HIGH
 JV3849'WIRE FENCE.
 JV3849'THE MARK IS 1 FT  NW FROM A WITNESS POST.
 JV3849'THE MARK IS 1 FT BELOW HIGHWAY.
 JV3849
 JV3849                          STATION RECOVERY (2002)
 JV3849
 JV3849'RECOVERY NOTE BY MARYLAND DOT HIGHWAY ADMINISTRATION 2002 (SFK)
 JV3849'THE STATION WAS SEARCHED FOR AND NOT RECOVERED.
1    National Geodetic Survey, Retrieval Date = MARCH 20, 2026 21:46:30 EDT
 JW0664 ***********************************************************************
 JW0664  DESIGNATION -  J 15
 JW0664  PID         -  JW0664
 JW0664  STATE/COUNTY-  MD/GARRETT
 JW0664  COUNTRY     -  US
 JW0664  USGS QUAD   -  DEER PARK (2016)
 JW0664
 JW0664                         *CURRENT SURVEY CONTROL
 JW0664  ______________________________________________________________________
 JW0664* NAD 83(1986) POSITION- 39 25 39.     (N) 079 16 46.     (W)   SCALED
 JW0664* NAVD 88 ORTHO HEIGHT -   802.387 (meters)     2632.50  (feet) ADJUSTED
 JW0664  ______________________________________________________________________
 JW0664  GEOID HEIGHT    -        -31.270 (meters)                     GEOID18
 JW0664  DYNAMIC HEIGHT  -        801.833 (meters)     2630.68  (feet) COMP
 JW0664  MODELED GRAVITY -    979,909.0   (mgal)                       NAVD 88
 JW0664
 JW0664  VERT ORDER      -  FIRST     CLASS II
 JW0664
 JW0664.The horizontal coordinates were scaled from a map and have
 JW0664.an estimated accuracy of +/- 6 seconds.
 JW0664
 JW0664.The orthometric height was determined by differential leveling and
 JW0664.adjusted by the NATIONAL GEODETIC SURVEY
 JW0664.in June 1991.
 JW0664
 JW0664.Significant digits in the geoid height do not necessarily reflect accuracy.
 JW0664.GEOID18 height accuracy estimate available here.
 JW0664
 JW0664.Click photographs - Photos may exist for this station.
 JW0664
 JW0664.The dynamic height is computed by dividing the NAVD 88
 JW0664.geopotential number by the normal gravity value computed on the
 JW0664.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
 JW0664.degrees latitude (g = 980.6199 gals.).
 JW0664
 JW0664.The modeled gravity was interpolated from observed gravity values.
 JW0664
 JW0664;                    North         East    Units  